yangshi_branch
liubangzi 1 year ago
parent 2d1a402daf
commit 0c23465fab

File diff suppressed because it is too large Load Diff

@ -1,24 +0,0 @@
#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################
@CMAKE_CONFIGURABLE_FILE_CONTENT@

@ -1,78 +0,0 @@
#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################
include(CheckCSourceCompiles)
option(CURL_HIDDEN_SYMBOLS "Set to ON to hide libcurl internal symbols (=hide all symbols that aren't officially external)." ON)
mark_as_advanced(CURL_HIDDEN_SYMBOLS)
if(CURL_HIDDEN_SYMBOLS)
set(SUPPORTS_SYMBOL_HIDING FALSE)
if(CMAKE_C_COMPILER_ID MATCHES "Clang" AND NOT MSVC)
set(SUPPORTS_SYMBOL_HIDING TRUE)
set(_SYMBOL_EXTERN "__attribute__ ((__visibility__ (\"default\")))")
set(_CFLAG_SYMBOLS_HIDE "-fvisibility=hidden")
elseif(CMAKE_COMPILER_IS_GNUCC)
if(NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 3.4)
# note: this is considered buggy prior to 4.0 but the autotools don't care, so let's ignore that fact
set(SUPPORTS_SYMBOL_HIDING TRUE)
set(_SYMBOL_EXTERN "__attribute__ ((__visibility__ (\"default\")))")
set(_CFLAG_SYMBOLS_HIDE "-fvisibility=hidden")
endif()
elseif(CMAKE_C_COMPILER_ID MATCHES "SunPro" AND NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 8.0)
set(SUPPORTS_SYMBOL_HIDING TRUE)
set(_SYMBOL_EXTERN "__global")
set(_CFLAG_SYMBOLS_HIDE "-xldscope=hidden")
elseif(CMAKE_C_COMPILER_ID MATCHES "Intel" AND NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 9.0)
# note: this should probably just check for version 9.1.045 but I'm not 100% sure
# so let's do it the same way autotools do.
set(SUPPORTS_SYMBOL_HIDING TRUE)
set(_SYMBOL_EXTERN "__attribute__ ((__visibility__ (\"default\")))")
set(_CFLAG_SYMBOLS_HIDE "-fvisibility=hidden")
check_c_source_compiles("#include <stdio.h>
int main (void) { printf(\"icc fvisibility bug test\"); return 0; }" _no_bug)
if(NOT _no_bug)
set(SUPPORTS_SYMBOL_HIDING FALSE)
set(_SYMBOL_EXTERN "")
set(_CFLAG_SYMBOLS_HIDE "")
endif()
elseif(MSVC)
set(SUPPORTS_SYMBOL_HIDING TRUE)
endif()
set(HIDES_CURL_PRIVATE_SYMBOLS ${SUPPORTS_SYMBOL_HIDING})
elseif(MSVC)
if(NOT CMAKE_VERSION VERSION_LESS 3.7)
set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS TRUE) #present since 3.4.3 but broken
set(HIDES_CURL_PRIVATE_SYMBOLS FALSE)
else()
message(WARNING "Hiding private symbols regardless CURL_HIDDEN_SYMBOLS being disabled.")
set(HIDES_CURL_PRIVATE_SYMBOLS TRUE)
endif()
else()
set(HIDES_CURL_PRIVATE_SYMBOLS FALSE)
endif()
set(CURL_CFLAG_SYMBOLS_HIDE ${_CFLAG_SYMBOLS_HIDE})
set(CURL_EXTERN_SYMBOL ${_SYMBOL_EXTERN})

@ -1,532 +0,0 @@
/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at https://curl.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
* SPDX-License-Identifier: curl
*
***************************************************************************/
#ifdef TIME_WITH_SYS_TIME
/* Time with sys/time test */
#include <sys/types.h>
#include <sys/time.h>
#include <time.h>
int
main ()
{
if ((struct tm *) 0)
return 0;
;
return 0;
}
#endif
#ifdef HAVE_FCNTL_O_NONBLOCK
/* headers for FCNTL_O_NONBLOCK test */
#include <sys/types.h>
#include <unistd.h>
#include <fcntl.h>
/* */
#if defined(sun) || defined(__sun__) || \
defined(__SUNPRO_C) || defined(__SUNPRO_CC)
# if defined(__SVR4) || defined(__srv4__)
# define PLATFORM_SOLARIS
# else
# define PLATFORM_SUNOS4
# endif
#endif
#if (defined(_AIX) || defined(__xlC__)) && !defined(_AIX41)
# define PLATFORM_AIX_V3
#endif
/* */
#if defined(PLATFORM_SUNOS4) || defined(PLATFORM_AIX_V3)
#error "O_NONBLOCK does not work on this platform"
#endif
int
main ()
{
/* O_NONBLOCK source test */
int flags = 0;
if(0 != fcntl(0, F_SETFL, flags | O_NONBLOCK))
return 1;
return 0;
}
#endif
/* tests for gethostbyname_r */
#if defined(HAVE_GETHOSTBYNAME_R_3_REENTRANT) || \
defined(HAVE_GETHOSTBYNAME_R_5_REENTRANT) || \
defined(HAVE_GETHOSTBYNAME_R_6_REENTRANT)
# define _REENTRANT
/* no idea whether _REENTRANT is always set, just invent a new flag */
# define TEST_GETHOSTBYFOO_REENTRANT
#endif
#if defined(HAVE_GETHOSTBYNAME_R_3) || \
defined(HAVE_GETHOSTBYNAME_R_5) || \
defined(HAVE_GETHOSTBYNAME_R_6) || \
defined(TEST_GETHOSTBYFOO_REENTRANT)
#include <sys/types.h>
#include <netdb.h>
int main(void)
{
char *address = "example.com";
int length = 0;
int type = 0;
struct hostent h;
int rc = 0;
#if defined(HAVE_GETHOSTBYNAME_R_3) || \
defined(HAVE_GETHOSTBYNAME_R_3_REENTRANT)
struct hostent_data hdata;
#elif defined(HAVE_GETHOSTBYNAME_R_5) || \
defined(HAVE_GETHOSTBYNAME_R_5_REENTRANT) || \
defined(HAVE_GETHOSTBYNAME_R_6) || \
defined(HAVE_GETHOSTBYNAME_R_6_REENTRANT)
char buffer[8192];
int h_errnop;
struct hostent *hp;
#endif
#if defined(HAVE_GETHOSTBYNAME_R_3) || \
defined(HAVE_GETHOSTBYNAME_R_3_REENTRANT)
rc = gethostbyname_r(address, &h, &hdata);
#elif defined(HAVE_GETHOSTBYNAME_R_5) || \
defined(HAVE_GETHOSTBYNAME_R_5_REENTRANT)
rc = gethostbyname_r(address, &h, buffer, 8192, &h_errnop);
(void)hp; /* not used for test */
#elif defined(HAVE_GETHOSTBYNAME_R_6) || \
defined(HAVE_GETHOSTBYNAME_R_6_REENTRANT)
rc = gethostbyname_r(address, &h, buffer, 8192, &hp, &h_errnop);
#endif
(void)length;
(void)type;
(void)rc;
return 0;
}
#endif
#ifdef HAVE_SOCKLEN_T
#ifdef _WIN32
#include <ws2tcpip.h>
#else
#include <sys/types.h>
#include <sys/socket.h>
#endif
int
main ()
{
if ((socklen_t *) 0)
return 0;
if (sizeof (socklen_t))
return 0;
;
return 0;
}
#endif
#ifdef HAVE_IN_ADDR_T
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
int
main ()
{
if ((in_addr_t *) 0)
return 0;
if (sizeof (in_addr_t))
return 0;
;
return 0;
}
#endif
#ifdef HAVE_BOOL_T
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_STDBOOL_H
#include <stdbool.h>
#endif
int
main ()
{
if (sizeof (bool *) )
return 0;
;
return 0;
}
#endif
#ifdef STDC_HEADERS
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <float.h>
int main() { return 0; }
#endif
#ifdef HAVE_FILE_OFFSET_BITS
#ifdef _FILE_OFFSET_BITS
#undef _FILE_OFFSET_BITS
#endif
#define _FILE_OFFSET_BITS 64
#include <sys/types.h>
/* Check that off_t can represent 2**63 - 1 correctly.
We can't simply define LARGE_OFF_T to be 9223372036854775807,
since some C++ compilers masquerading as C compilers
incorrectly reject 9223372036854775807. */
#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
&& LARGE_OFF_T % 2147483647 == 1)
? 1 : -1];
int main () { ; return 0; }
#endif
#ifdef HAVE_IOCTLSOCKET
/* includes start */
#ifdef HAVE_WINDOWS_H
# ifndef WIN32_LEAN_AND_MEAN
# define WIN32_LEAN_AND_MEAN
# endif
# include <windows.h>
# ifdef HAVE_WINSOCK2_H
# include <winsock2.h>
# endif
#endif
int
main ()
{
/* ioctlsocket source code */
int socket;
unsigned long flags = ioctlsocket(socket, FIONBIO, &flags);
;
return 0;
}
#endif
#ifdef HAVE_IOCTLSOCKET_CAMEL
/* includes start */
#ifdef HAVE_WINDOWS_H
# ifndef WIN32_LEAN_AND_MEAN
# define WIN32_LEAN_AND_MEAN
# endif
# include <windows.h>
# ifdef HAVE_WINSOCK2_H
# include <winsock2.h>
# endif
#endif
int
main ()
{
/* IoctlSocket source code */
if(0 != IoctlSocket(0, 0, 0))
return 1;
;
return 0;
}
#endif
#ifdef HAVE_IOCTLSOCKET_CAMEL_FIONBIO
/* includes start */
#ifdef HAVE_WINDOWS_H
# ifndef WIN32_LEAN_AND_MEAN
# define WIN32_LEAN_AND_MEAN
# endif
# include <windows.h>
# ifdef HAVE_WINSOCK2_H
# include <winsock2.h>
# endif
#endif
int
main ()
{
/* IoctlSocket source code */
long flags = 0;
if(0 != IoctlSocket(0, FIONBIO, &flags))
return 1;
;
return 0;
}
#endif
#ifdef HAVE_IOCTLSOCKET_FIONBIO
/* includes start */
#ifdef HAVE_WINDOWS_H
# ifndef WIN32_LEAN_AND_MEAN
# define WIN32_LEAN_AND_MEAN
# endif
# include <windows.h>
# ifdef HAVE_WINSOCK2_H
# include <winsock2.h>
# endif
#endif
int
main ()
{
int flags = 0;
if(0 != ioctlsocket(0, FIONBIO, &flags))
return 1;
;
return 0;
}
#endif
#ifdef HAVE_IOCTL_FIONBIO
/* headers for FIONBIO test */
/* includes start */
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_SYS_IOCTL_H
# include <sys/ioctl.h>
#endif
#ifdef HAVE_STROPTS_H
# include <stropts.h>
#endif
int
main ()
{
int flags = 0;
if(0 != ioctl(0, FIONBIO, &flags))
return 1;
;
return 0;
}
#endif
#ifdef HAVE_IOCTL_SIOCGIFADDR
/* headers for FIONBIO test */
/* includes start */
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_SYS_IOCTL_H
# include <sys/ioctl.h>
#endif
#ifdef HAVE_STROPTS_H
# include <stropts.h>
#endif
#include <net/if.h>
int
main ()
{
struct ifreq ifr;
if(0 != ioctl(0, SIOCGIFADDR, &ifr))
return 1;
;
return 0;
}
#endif
#ifdef HAVE_SETSOCKOPT_SO_NONBLOCK
/* includes start */
#ifdef HAVE_WINDOWS_H
# ifndef WIN32_LEAN_AND_MEAN
# define WIN32_LEAN_AND_MEAN
# endif
# include <windows.h>
# ifdef HAVE_WINSOCK2_H
# include <winsock2.h>
# endif
#endif
/* includes start */
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
/* includes end */
int
main ()
{
if(0 != setsockopt(0, SOL_SOCKET, SO_NONBLOCK, 0, 0))
return 1;
;
return 0;
}
#endif
#ifdef HAVE_GLIBC_STRERROR_R
#include <string.h>
#include <errno.h>
void check(char c) {}
int
main () {
char buffer[1024];
/* This will not compile if strerror_r does not return a char* */
check(strerror_r(EACCES, buffer, sizeof(buffer))[0]);
return 0;
}
#endif
#ifdef HAVE_POSIX_STRERROR_R
#include <string.h>
#include <errno.h>
/* float, because a pointer can't be implicitly cast to float */
void check(float f) {}
int
main () {
char buffer[1024];
/* This will not compile if strerror_r does not return an int */
check(strerror_r(EACCES, buffer, sizeof(buffer)));
return 0;
}
#endif
#ifdef HAVE_FSETXATTR_6
#include <sys/xattr.h> /* header from libc, not from libattr */
int
main() {
fsetxattr(0, 0, 0, 0, 0, 0);
return 0;
}
#endif
#ifdef HAVE_FSETXATTR_5
#include <sys/xattr.h> /* header from libc, not from libattr */
int
main() {
fsetxattr(0, 0, 0, 0, 0);
return 0;
}
#endif
#ifdef HAVE_CLOCK_GETTIME_MONOTONIC
#include <time.h>
int
main() {
struct timespec ts = {0, 0};
clock_gettime(CLOCK_MONOTONIC, &ts);
return 0;
}
#endif
#ifdef HAVE_BUILTIN_AVAILABLE
int
main() {
if(__builtin_available(macOS 10.12, *)) {}
return 0;
}
#endif
#ifdef HAVE_VARIADIC_MACROS_C99
#define c99_vmacro3(first, ...) fun3(first, __VA_ARGS__)
#define c99_vmacro2(first, ...) fun2(first, __VA_ARGS__)
int fun3(int arg1, int arg2, int arg3);
int fun2(int arg1, int arg2);
int fun3(int arg1, int arg2, int arg3) {
return arg1 + arg2 + arg3;
}
int fun2(int arg1, int arg2) {
return arg1 + arg2;
}
int
main() {
int res3 = c99_vmacro3(1, 2, 3);
int res2 = c99_vmacro2(1, 2);
(void)res3;
(void)res2;
return 0;
}
#endif
#ifdef HAVE_VARIADIC_MACROS_GCC
#define gcc_vmacro3(first, args...) fun3(first, args)
#define gcc_vmacro2(first, args...) fun2(first, args)
int fun3(int arg1, int arg2, int arg3);
int fun2(int arg1, int arg2);
int fun3(int arg1, int arg2, int arg3) {
return arg1 + arg2 + arg3;
}
int fun2(int arg1, int arg2) {
return arg1 + arg2;
}
int
main() {
int res3 = gcc_vmacro3(1, 2, 3);
int res2 = gcc_vmacro2(1, 2);
(void)res3;
(void)res2;
return 0;
}
#endif
#ifdef HAVE_ATOMIC
/* includes start */
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifdef HAVE_STDATOMIC_H
# include <stdatomic.h>
#endif
/* includes end */
int
main() {
_Atomic int i = 1;
i = 0; // Force an atomic-write operation.
return i;
}
#endif
#ifdef HAVE_WIN32_WINNT
/* includes start */
#ifdef WIN32
# include "../lib/setup-win32.h"
#endif
/* includes end */
#define enquote(x) #x
#define expand(x) enquote(x)
#pragma message("_WIN32_WINNT=" expand(_WIN32_WINNT))
int
main() {
return 0;
}
#endif

@ -1,32 +0,0 @@
#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################
find_path(BEARSSL_INCLUDE_DIRS bearssl.h)
find_library(BEARSSL_LIBRARY bearssl)
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(BEARSSL DEFAULT_MSG
BEARSSL_INCLUDE_DIRS BEARSSL_LIBRARY)
mark_as_advanced(BEARSSL_INCLUDE_DIRS BEARSSL_LIBRARY)

@ -1,43 +0,0 @@
#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################
include(FindPackageHandleStandardArgs)
find_path(BROTLI_INCLUDE_DIR "brotli/decode.h")
find_library(BROTLICOMMON_LIBRARY NAMES brotlicommon)
find_library(BROTLIDEC_LIBRARY NAMES brotlidec)
find_package_handle_standard_args(Brotli
FOUND_VAR
BROTLI_FOUND
REQUIRED_VARS
BROTLIDEC_LIBRARY
BROTLICOMMON_LIBRARY
BROTLI_INCLUDE_DIR
FAIL_MESSAGE
"Could NOT find Brotli"
)
set(BROTLI_INCLUDE_DIRS ${BROTLI_INCLUDE_DIR})
set(BROTLI_LIBRARIES ${BROTLICOMMON_LIBRARY} ${BROTLIDEC_LIBRARY})

@ -1,47 +0,0 @@
#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################
# - Find c-ares
# Find the c-ares includes and library
# This module defines
# CARES_INCLUDE_DIR, where to find ares.h, etc.
# CARES_LIBRARIES, the libraries needed to use c-ares.
# CARES_FOUND, If false, do not try to use c-ares.
# also defined, but not for general use are
# CARES_LIBRARY, where to find the c-ares library.
find_path(CARES_INCLUDE_DIR ares.h)
set(CARES_NAMES ${CARES_NAMES} cares)
find_library(CARES_LIBRARY
NAMES ${CARES_NAMES}
)
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(CARES
REQUIRED_VARS CARES_LIBRARY CARES_INCLUDE_DIR)
mark_as_advanced(
CARES_LIBRARY
CARES_INCLUDE_DIR
)

@ -1,312 +0,0 @@
#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################
# - Try to find the GSS Kerberos library
# Once done this will define
#
# GSS_ROOT_DIR - Set this variable to the root installation of GSS
#
# Read-Only variables:
# GSS_FOUND - system has the Heimdal library
# GSS_FLAVOUR - "MIT" or "Heimdal" if anything found.
# GSS_INCLUDE_DIR - the Heimdal include directory
# GSS_LIBRARIES - The libraries needed to use GSS
# GSS_LINK_DIRECTORIES - Directories to add to linker search path
# GSS_LINKER_FLAGS - Additional linker flags
# GSS_COMPILER_FLAGS - Additional compiler flags
# GSS_VERSION - This is set to version advertised by pkg-config or read from manifest.
# In case the library is found but no version info available it'll be set to "unknown"
set(_MIT_MODNAME mit-krb5-gssapi)
set(_HEIMDAL_MODNAME heimdal-gssapi)
include(CheckIncludeFile)
include(CheckIncludeFiles)
include(CheckTypeSize)
set(_GSS_ROOT_HINTS
"${GSS_ROOT_DIR}"
"$ENV{GSS_ROOT_DIR}"
)
# try to find library using system pkg-config if user didn't specify root dir
if(NOT GSS_ROOT_DIR AND NOT "$ENV{GSS_ROOT_DIR}")
if(UNIX)
find_package(PkgConfig QUIET)
pkg_search_module(_GSS_PKG ${_MIT_MODNAME} ${_HEIMDAL_MODNAME})
list(APPEND _GSS_ROOT_HINTS "${_GSS_PKG_PREFIX}")
elseif(WIN32)
list(APPEND _GSS_ROOT_HINTS "[HKEY_LOCAL_MACHINE\\SOFTWARE\\MIT\\Kerberos;InstallDir]")
endif()
endif()
if(NOT _GSS_FOUND) #not found by pkg-config. Let's take more traditional approach.
find_file(_GSS_CONFIGURE_SCRIPT
NAMES
"krb5-config"
HINTS
${_GSS_ROOT_HINTS}
PATH_SUFFIXES
bin
NO_CMAKE_PATH
NO_CMAKE_ENVIRONMENT_PATH
)
# if not found in user-supplied directories, maybe system knows better
find_file(_GSS_CONFIGURE_SCRIPT
NAMES
"krb5-config"
PATH_SUFFIXES
bin
)
if(_GSS_CONFIGURE_SCRIPT)
execute_process(
COMMAND ${_GSS_CONFIGURE_SCRIPT} "--cflags" "gssapi"
OUTPUT_VARIABLE _GSS_CFLAGS
RESULT_VARIABLE _GSS_CONFIGURE_FAILED
OUTPUT_STRIP_TRAILING_WHITESPACE
)
message(STATUS "CFLAGS: ${_GSS_CFLAGS}")
if(NOT _GSS_CONFIGURE_FAILED) # 0 means success
# should also work in an odd case when multiple directories are given
string(STRIP "${_GSS_CFLAGS}" _GSS_CFLAGS)
string(REGEX REPLACE " +-I" ";" _GSS_CFLAGS "${_GSS_CFLAGS}")
string(REGEX REPLACE " +-([^I][^ \\t;]*)" ";-\\1" _GSS_CFLAGS "${_GSS_CFLAGS}")
foreach(_flag ${_GSS_CFLAGS})
if(_flag MATCHES "^-I.*")
string(REGEX REPLACE "^-I" "" _val "${_flag}")
list(APPEND _GSS_INCLUDE_DIR "${_val}")
else()
list(APPEND _GSS_COMPILER_FLAGS "${_flag}")
endif()
endforeach()
endif()
execute_process(
COMMAND ${_GSS_CONFIGURE_SCRIPT} "--libs" "gssapi"
OUTPUT_VARIABLE _GSS_LIB_FLAGS
RESULT_VARIABLE _GSS_CONFIGURE_FAILED
OUTPUT_STRIP_TRAILING_WHITESPACE
)
message(STATUS "LDFLAGS: ${_GSS_LIB_FLAGS}")
if(NOT _GSS_CONFIGURE_FAILED) # 0 means success
# this script gives us libraries and link directories. Blah. We have to deal with it.
string(STRIP "${_GSS_LIB_FLAGS}" _GSS_LIB_FLAGS)
string(REGEX REPLACE " +-(L|l)" ";-\\1" _GSS_LIB_FLAGS "${_GSS_LIB_FLAGS}")
string(REGEX REPLACE " +-([^Ll][^ \\t;]*)" ";-\\1" _GSS_LIB_FLAGS "${_GSS_LIB_FLAGS}")
foreach(_flag ${_GSS_LIB_FLAGS})
if(_flag MATCHES "^-l.*")
string(REGEX REPLACE "^-l" "" _val "${_flag}")
list(APPEND _GSS_LIBRARIES "${_val}")
elseif(_flag MATCHES "^-L.*")
string(REGEX REPLACE "^-L" "" _val "${_flag}")
list(APPEND _GSS_LINK_DIRECTORIES "${_val}")
else()
list(APPEND _GSS_LINKER_FLAGS "${_flag}")
endif()
endforeach()
endif()
execute_process(
COMMAND ${_GSS_CONFIGURE_SCRIPT} "--version"
OUTPUT_VARIABLE _GSS_VERSION
RESULT_VARIABLE _GSS_CONFIGURE_FAILED
OUTPUT_STRIP_TRAILING_WHITESPACE
)
# older versions may not have the "--version" parameter. In this case we just don't care.
if(_GSS_CONFIGURE_FAILED)
set(_GSS_VERSION 0)
endif()
execute_process(
COMMAND ${_GSS_CONFIGURE_SCRIPT} "--vendor"
OUTPUT_VARIABLE _GSS_VENDOR
RESULT_VARIABLE _GSS_CONFIGURE_FAILED
OUTPUT_STRIP_TRAILING_WHITESPACE
)
# older versions may not have the "--vendor" parameter. In this case we just don't care.
if(_GSS_CONFIGURE_FAILED)
set(GSS_FLAVOUR "Heimdal") # most probably, shouldn't really matter
else()
if(_GSS_VENDOR MATCHES ".*H|heimdal.*")
set(GSS_FLAVOUR "Heimdal")
else()
set(GSS_FLAVOUR "MIT")
endif()
endif()
else() # either there is no config script or we are on a platform that doesn't provide one (Windows?)
find_path(_GSS_INCLUDE_DIR
NAMES
"gssapi/gssapi.h"
HINTS
${_GSS_ROOT_HINTS}
PATH_SUFFIXES
include
inc
)
if(_GSS_INCLUDE_DIR) #jay, we've found something
set(CMAKE_REQUIRED_INCLUDES "${_GSS_INCLUDE_DIR}")
check_include_files( "gssapi/gssapi_generic.h;gssapi/gssapi_krb5.h" _GSS_HAVE_MIT_HEADERS)
if(_GSS_HAVE_MIT_HEADERS)
set(GSS_FLAVOUR "MIT")
else()
# prevent compiling the header - just check if we can include it
list(APPEND CMAKE_REQUIRED_DEFINITIONS -D__ROKEN_H__)
check_include_file( "roken.h" _GSS_HAVE_ROKEN_H)
check_include_file( "heimdal/roken.h" _GSS_HAVE_HEIMDAL_ROKEN_H)
if(_GSS_HAVE_ROKEN_H OR _GSS_HAVE_HEIMDAL_ROKEN_H)
set(GSS_FLAVOUR "Heimdal")
endif()
list(REMOVE_ITEM CMAKE_REQUIRED_DEFINITIONS -D__ROKEN_H__)
endif()
else()
# I'm not convinced if this is the right way but this is what autotools do at the moment
find_path(_GSS_INCLUDE_DIR
NAMES
"gssapi.h"
HINTS
${_GSS_ROOT_HINTS}
PATH_SUFFIXES
include
inc
)
if(_GSS_INCLUDE_DIR)
set(GSS_FLAVOUR "Heimdal")
endif()
endif()
# if we have headers, check if we can link libraries
if(GSS_FLAVOUR)
set(_GSS_LIBDIR_SUFFIXES "")
set(_GSS_LIBDIR_HINTS ${_GSS_ROOT_HINTS})
get_filename_component(_GSS_CALCULATED_POTENTIAL_ROOT "${_GSS_INCLUDE_DIR}" PATH)
list(APPEND _GSS_LIBDIR_HINTS ${_GSS_CALCULATED_POTENTIAL_ROOT})
if(WIN32)
if(CMAKE_SIZEOF_VOID_P EQUAL 8)
list(APPEND _GSS_LIBDIR_SUFFIXES "lib/AMD64")
if(GSS_FLAVOUR STREQUAL "MIT")
set(_GSS_LIBNAME "gssapi64")
else()
set(_GSS_LIBNAME "libgssapi")
endif()
else()
list(APPEND _GSS_LIBDIR_SUFFIXES "lib/i386")
if(GSS_FLAVOUR STREQUAL "MIT")
set(_GSS_LIBNAME "gssapi32")
else()
set(_GSS_LIBNAME "libgssapi")
endif()
endif()
else()
list(APPEND _GSS_LIBDIR_SUFFIXES "lib;lib64") # those suffixes are not checked for HINTS
if(GSS_FLAVOUR STREQUAL "MIT")
set(_GSS_LIBNAME "gssapi_krb5")
else()
set(_GSS_LIBNAME "gssapi")
endif()
endif()
find_library(_GSS_LIBRARIES
NAMES
${_GSS_LIBNAME}
HINTS
${_GSS_LIBDIR_HINTS}
PATH_SUFFIXES
${_GSS_LIBDIR_SUFFIXES}
)
endif()
endif()
else()
if(_GSS_PKG_${_MIT_MODNAME}_VERSION)
set(GSS_FLAVOUR "MIT")
set(_GSS_VERSION _GSS_PKG_${_MIT_MODNAME}_VERSION)
else()
set(GSS_FLAVOUR "Heimdal")
set(_GSS_VERSION _GSS_PKG_${_MIT_HEIMDAL}_VERSION)
endif()
endif()
set(GSS_INCLUDE_DIR ${_GSS_INCLUDE_DIR})
set(GSS_LIBRARIES ${_GSS_LIBRARIES})
set(GSS_LINK_DIRECTORIES ${_GSS_LINK_DIRECTORIES})
set(GSS_LINKER_FLAGS ${_GSS_LINKER_FLAGS})
set(GSS_COMPILER_FLAGS ${_GSS_COMPILER_FLAGS})
set(GSS_VERSION ${_GSS_VERSION})
if(GSS_FLAVOUR)
if(NOT GSS_VERSION AND GSS_FLAVOUR STREQUAL "Heimdal")
if(CMAKE_SIZEOF_VOID_P EQUAL 8)
set(HEIMDAL_MANIFEST_FILE "Heimdal.Application.amd64.manifest")
else()
set(HEIMDAL_MANIFEST_FILE "Heimdal.Application.x86.manifest")
endif()
if(EXISTS "${GSS_INCLUDE_DIR}/${HEIMDAL_MANIFEST_FILE}")
file(STRINGS "${GSS_INCLUDE_DIR}/${HEIMDAL_MANIFEST_FILE}" heimdal_version_str
REGEX "^.*version=\"[0-9]\\.[^\"]+\".*$")
string(REGEX MATCH "[0-9]\\.[^\"]+"
GSS_VERSION "${heimdal_version_str}")
endif()
if(NOT GSS_VERSION)
set(GSS_VERSION "Heimdal Unknown")
endif()
elseif(NOT GSS_VERSION AND GSS_FLAVOUR STREQUAL "MIT")
get_filename_component(_MIT_VERSION "[HKEY_LOCAL_MACHINE\\SOFTWARE\\MIT\\Kerberos\\SDK\\CurrentVersion;VersionString]" NAME CACHE)
if(WIN32 AND _MIT_VERSION)
set(GSS_VERSION "${_MIT_VERSION}")
else()
set(GSS_VERSION "MIT Unknown")
endif()
endif()
endif()
include(FindPackageHandleStandardArgs)
set(_GSS_REQUIRED_VARS GSS_LIBRARIES GSS_FLAVOUR)
find_package_handle_standard_args(GSS
REQUIRED_VARS
${_GSS_REQUIRED_VARS}
VERSION_VAR
GSS_VERSION
FAIL_MESSAGE
"Could NOT find GSS, try to set the path to GSS root folder in the system variable GSS_ROOT_DIR"
)
mark_as_advanced(GSS_INCLUDE_DIR GSS_LIBRARIES)

@ -1,45 +0,0 @@
#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################
# - Try to find the libpsl library
# Once done this will define
#
# LIBPSL_FOUND - system has the libpsl library
# LIBPSL_INCLUDE_DIR - the libpsl include directory
# LIBPSL_LIBRARY - the libpsl library name
find_path(LIBPSL_INCLUDE_DIR libpsl.h)
find_library(LIBPSL_LIBRARY NAMES psl libpsl)
if(LIBPSL_INCLUDE_DIR)
file(STRINGS "${LIBPSL_INCLUDE_DIR}/libpsl.h" libpsl_version_str REGEX "^#define[\t ]+PSL_VERSION[\t ]+\"(.*)\"")
string(REGEX REPLACE "^.*\"([^\"]+)\"" "\\1" LIBPSL_VERSION "${libpsl_version_str}")
endif()
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(LibPSL
REQUIRED_VARS LIBPSL_LIBRARY LIBPSL_INCLUDE_DIR
VERSION_VAR LIBPSL_VERSION)
mark_as_advanced(LIBPSL_INCLUDE_DIR LIBPSL_LIBRARY)

@ -1,45 +0,0 @@
#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################
# - Try to find the libssh2 library
# Once done this will define
#
# LIBSSH2_FOUND - system has the libssh2 library
# LIBSSH2_INCLUDE_DIR - the libssh2 include directory
# LIBSSH2_LIBRARY - the libssh2 library name
find_path(LIBSSH2_INCLUDE_DIR libssh2.h)
find_library(LIBSSH2_LIBRARY NAMES ssh2 libssh2)
if(LIBSSH2_INCLUDE_DIR)
file(STRINGS "${LIBSSH2_INCLUDE_DIR}/libssh2.h" libssh2_version_str REGEX "^#define[\t ]+LIBSSH2_VERSION[\t ]+\"(.*)\"")
string(REGEX REPLACE "^.*\"([^\"]+)\"" "\\1" LIBSSH2_VERSION "${libssh2_version_str}")
endif()
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(LibSSH2
REQUIRED_VARS LIBSSH2_LIBRARY LIBSSH2_INCLUDE_DIR
VERSION_VAR LIBSSH2_VERSION)
mark_as_advanced(LIBSSH2_INCLUDE_DIR LIBSSH2_LIBRARY)

@ -1,70 +0,0 @@
#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################
#[=======================================================================[.rst:
FindMSH3
----------
Find the msh3 library
Result Variables
^^^^^^^^^^^^^^^^
``MSH3_FOUND``
System has msh3
``MSH3_INCLUDE_DIRS``
The msh3 include directories.
``MSH3_LIBRARIES``
The libraries needed to use msh3
#]=======================================================================]
if(UNIX)
find_package(PkgConfig QUIET)
pkg_search_module(PC_MSH3 libmsh3)
endif()
find_path(MSH3_INCLUDE_DIR msh3.h
HINTS
${PC_MSH3_INCLUDEDIR}
${PC_MSH3_INCLUDE_DIRS}
)
find_library(MSH3_LIBRARY NAMES msh3
HINTS
${PC_MSH3_LIBDIR}
${PC_MSH3_LIBRARY_DIRS}
)
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(MSH3
REQUIRED_VARS
MSH3_LIBRARY
MSH3_INCLUDE_DIR
)
if(MSH3_FOUND)
set(MSH3_LIBRARIES ${MSH3_LIBRARY})
set(MSH3_INCLUDE_DIRS ${MSH3_INCLUDE_DIR})
endif()
mark_as_advanced(MSH3_INCLUDE_DIRS MSH3_LIBRARIES)

@ -1,36 +0,0 @@
#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################
find_path(MBEDTLS_INCLUDE_DIRS mbedtls/ssl.h)
find_library(MBEDTLS_LIBRARY mbedtls)
find_library(MBEDX509_LIBRARY mbedx509)
find_library(MBEDCRYPTO_LIBRARY mbedcrypto)
set(MBEDTLS_LIBRARIES "${MBEDTLS_LIBRARY}" "${MBEDX509_LIBRARY}" "${MBEDCRYPTO_LIBRARY}")
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(MbedTLS DEFAULT_MSG
MBEDTLS_INCLUDE_DIRS MBEDTLS_LIBRARY MBEDX509_LIBRARY MBEDCRYPTO_LIBRARY)
mark_as_advanced(MBEDTLS_INCLUDE_DIRS MBEDTLS_LIBRARY MBEDX509_LIBRARY MBEDCRYPTO_LIBRARY)

@ -1,41 +0,0 @@
#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################
include(FindPackageHandleStandardArgs)
find_path(NGHTTP2_INCLUDE_DIR "nghttp2/nghttp2.h")
find_library(NGHTTP2_LIBRARY NAMES nghttp2)
find_package_handle_standard_args(NGHTTP2
FOUND_VAR
NGHTTP2_FOUND
REQUIRED_VARS
NGHTTP2_LIBRARY
NGHTTP2_INCLUDE_DIR
)
set(NGHTTP2_INCLUDE_DIRS ${NGHTTP2_INCLUDE_DIR})
set(NGHTTP2_LIBRARIES ${NGHTTP2_LIBRARY})
mark_as_advanced(NGHTTP2_INCLUDE_DIRS NGHTTP2_LIBRARIES)

@ -1,78 +0,0 @@
#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################
#[=======================================================================[.rst:
FindNGHTTP3
----------
Find the nghttp3 library
Result Variables
^^^^^^^^^^^^^^^^
``NGHTTP3_FOUND``
System has nghttp3
``NGHTTP3_INCLUDE_DIRS``
The nghttp3 include directories.
``NGHTTP3_LIBRARIES``
The libraries needed to use nghttp3
``NGHTTP3_VERSION``
version of nghttp3.
#]=======================================================================]
if(UNIX)
find_package(PkgConfig QUIET)
pkg_search_module(PC_NGHTTP3 libnghttp3)
endif()
find_path(NGHTTP3_INCLUDE_DIR nghttp3/nghttp3.h
HINTS
${PC_NGHTTP3_INCLUDEDIR}
${PC_NGHTTP3_INCLUDE_DIRS}
)
find_library(NGHTTP3_LIBRARY NAMES nghttp3
HINTS
${PC_NGHTTP3_LIBDIR}
${PC_NGHTTP3_LIBRARY_DIRS}
)
if(PC_NGHTTP3_VERSION)
set(NGHTTP3_VERSION ${PC_NGHTTP3_VERSION})
endif()
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(NGHTTP3
REQUIRED_VARS
NGHTTP3_LIBRARY
NGHTTP3_INCLUDE_DIR
VERSION_VAR NGHTTP3_VERSION
)
if(NGHTTP3_FOUND)
set(NGHTTP3_LIBRARIES ${NGHTTP3_LIBRARY})
set(NGHTTP3_INCLUDE_DIRS ${NGHTTP3_INCLUDE_DIR})
endif()
mark_as_advanced(NGHTTP3_INCLUDE_DIRS NGHTTP3_LIBRARIES)

@ -1,115 +0,0 @@
#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################
#[=======================================================================[.rst:
FindNGTCP2
----------
Find the ngtcp2 library
This module accepts optional COMPONENTS to control the crypto library (these are
mutually exclusive)::
OpenSSL: Use libngtcp2_crypto_openssl
GnuTLS: Use libngtcp2_crypto_gnutls
Result Variables
^^^^^^^^^^^^^^^^
``NGTCP2_FOUND``
System has ngtcp2
``NGTCP2_INCLUDE_DIRS``
The ngtcp2 include directories.
``NGTCP2_LIBRARIES``
The libraries needed to use ngtcp2
``NGTCP2_VERSION``
version of ngtcp2.
#]=======================================================================]
if(UNIX)
find_package(PkgConfig QUIET)
pkg_search_module(PC_NGTCP2 libngtcp2)
endif()
find_path(NGTCP2_INCLUDE_DIR ngtcp2/ngtcp2.h
HINTS
${PC_NGTCP2_INCLUDEDIR}
${PC_NGTCP2_INCLUDE_DIRS}
)
find_library(NGTCP2_LIBRARY NAMES ngtcp2
HINTS
${PC_NGTCP2_LIBDIR}
${PC_NGTCP2_LIBRARY_DIRS}
)
if(PC_NGTCP2_VERSION)
set(NGTCP2_VERSION ${PC_NGTCP2_VERSION})
endif()
if(NGTCP2_FIND_COMPONENTS)
set(NGTCP2_CRYPTO_BACKEND "")
foreach(component IN LISTS NGTCP2_FIND_COMPONENTS)
if(component MATCHES "^(BoringSSL|OpenSSL|wolfSSL|GnuTLS)")
if(NGTCP2_CRYPTO_BACKEND)
message(FATAL_ERROR "NGTCP2: Only one crypto library can be selected")
endif()
set(NGTCP2_CRYPTO_BACKEND ${component})
endif()
endforeach()
if(NGTCP2_CRYPTO_BACKEND)
string(TOLOWER "ngtcp2_crypto_${NGTCP2_CRYPTO_BACKEND}" _crypto_library)
if(UNIX)
pkg_search_module(PC_${_crypto_library} lib${_crypto_library})
endif()
find_library(${_crypto_library}_LIBRARY
NAMES
${_crypto_library}
HINTS
${PC_${_crypto_library}_LIBDIR}
${PC_${_crypto_library}_LIBRARY_DIRS}
)
if(${_crypto_library}_LIBRARY)
set(NGTCP2_${NGTCP2_CRYPTO_BACKEND}_FOUND TRUE)
set(NGTCP2_CRYPTO_LIBRARY ${${_crypto_library}_LIBRARY})
endif()
endif()
endif()
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(NGTCP2
REQUIRED_VARS
NGTCP2_LIBRARY
NGTCP2_INCLUDE_DIR
VERSION_VAR NGTCP2_VERSION
HANDLE_COMPONENTS
)
if(NGTCP2_FOUND)
set(NGTCP2_LIBRARIES ${NGTCP2_LIBRARY} ${NGTCP2_CRYPTO_LIBRARY})
set(NGTCP2_INCLUDE_DIRS ${NGTCP2_INCLUDE_DIR})
endif()
mark_as_advanced(NGTCP2_INCLUDE_DIRS NGTCP2_LIBRARIES)

@ -1,40 +0,0 @@
#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################
if(UNIX)
find_package(PkgConfig QUIET)
pkg_search_module(PC_NSS nss)
endif()
if(NOT PC_NSS_FOUND)
return()
endif()
set(NSS_LIBRARIES ${PC_NSS_LINK_LIBRARIES})
set(NSS_INCLUDE_DIRS ${PC_NSS_INCLUDE_DIRS})
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(NSS
REQUIRED_VARS NSS_LIBRARIES NSS_INCLUDE_DIRS
VERSION_VAR PC_NSS_VERSION)
mark_as_advanced(NSS_INCLUDE_DIRS NSS_LIBRARIES)

@ -1,70 +0,0 @@
#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################
#[=======================================================================[.rst:
FindQUICHE
----------
Find the quiche library
Result Variables
^^^^^^^^^^^^^^^^
``QUICHE_FOUND``
System has quiche
``QUICHE_INCLUDE_DIRS``
The quiche include directories.
``QUICHE_LIBRARIES``
The libraries needed to use quiche
#]=======================================================================]
if(UNIX)
find_package(PkgConfig QUIET)
pkg_search_module(PC_QUICHE quiche)
endif()
find_path(QUICHE_INCLUDE_DIR quiche.h
HINTS
${PC_QUICHE_INCLUDEDIR}
${PC_QUICHE_INCLUDE_DIRS}
)
find_library(QUICHE_LIBRARY NAMES quiche
HINTS
${PC_QUICHE_LIBDIR}
${PC_QUICHE_LIBRARY_DIRS}
)
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(QUICHE
REQUIRED_VARS
QUICHE_LIBRARY
QUICHE_INCLUDE_DIR
)
if(QUICHE_FOUND)
set(QUICHE_LIBRARIES ${QUICHE_LIBRARY})
set(QUICHE_INCLUDE_DIRS ${QUICHE_INCLUDE_DIR})
endif()
mark_as_advanced(QUICHE_INCLUDE_DIRS QUICHE_LIBRARIES)

@ -1,36 +0,0 @@
#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################
find_path(WolfSSL_INCLUDE_DIR NAMES wolfssl/ssl.h)
find_library(WolfSSL_LIBRARY NAMES wolfssl)
mark_as_advanced(WolfSSL_INCLUDE_DIR WolfSSL_LIBRARY)
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(WolfSSL
REQUIRED_VARS WolfSSL_INCLUDE_DIR WolfSSL_LIBRARY
)
if(WolfSSL_FOUND)
set(WolfSSL_INCLUDE_DIRS ${WolfSSL_INCLUDE_DIR})
set(WolfSSL_LIBRARIES ${WolfSSL_LIBRARY})
endif()

@ -1,71 +0,0 @@
#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################
#[=======================================================================[.rst:
FindZstd
----------
Find the zstd library
Result Variables
^^^^^^^^^^^^^^^^
``Zstd_FOUND``
System has zstd
``Zstd_INCLUDE_DIRS``
The zstd include directories.
``Zstd_LIBRARIES``
The libraries needed to use zstd
#]=======================================================================]
if(UNIX)
find_package(PkgConfig QUIET)
pkg_search_module(PC_Zstd libzstd)
endif()
find_path(Zstd_INCLUDE_DIR zstd.h
HINTS
${PC_Zstd_INCLUDEDIR}
${PC_Zstd_INCLUDE_DIRS}
)
find_library(Zstd_LIBRARY NAMES zstd
HINTS
${PC_Zstd_LIBDIR}
${PC_Zstd_LIBRARY_DIRS}
)
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(Zstd
REQUIRED_VARS
Zstd_LIBRARY
Zstd_INCLUDE_DIR
)
if(Zstd_FOUND)
set(Zstd_LIBRARIES ${Zstd_LIBRARY})
set(Zstd_INCLUDE_DIRS ${Zstd_INCLUDE_DIR})
endif()
mark_as_advanced(Zstd_INCLUDE_DIRS Zstd_LIBRARIES)

@ -1,122 +0,0 @@
#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################
#File defines convenience macros for available feature testing
# This macro checks if the symbol exists in the library and if it
# does, it prepends library to the list. It is intended to be called
# multiple times with a sequence of possibly dependent libraries in
# order of least-to-most-dependent. Some libraries depend on others
# to link correctly.
macro(check_library_exists_concat LIBRARY SYMBOL VARIABLE)
check_library_exists("${LIBRARY};${CURL_LIBS}" ${SYMBOL} "${CMAKE_LIBRARY_PATH}"
${VARIABLE})
if(${VARIABLE})
set(CURL_LIBS ${LIBRARY} ${CURL_LIBS})
endif()
endmacro()
# Check if header file exists and add it to the list.
# This macro is intended to be called multiple times with a sequence of
# possibly dependent header files. Some headers depend on others to be
# compiled correctly.
macro(check_include_file_concat FILE VARIABLE)
check_include_files("${CURL_INCLUDES};${FILE}" ${VARIABLE})
if(${VARIABLE})
set(CURL_INCLUDES ${CURL_INCLUDES} ${FILE})
set(CURL_TEST_DEFINES "${CURL_TEST_DEFINES} -D${VARIABLE}")
endif()
endmacro()
# For other curl specific tests, use this macro.
macro(curl_internal_test CURL_TEST)
if(NOT DEFINED "${CURL_TEST}")
set(MACRO_CHECK_FUNCTION_DEFINITIONS
"-D${CURL_TEST} ${CURL_TEST_DEFINES} ${CMAKE_REQUIRED_FLAGS}")
if(CMAKE_REQUIRED_LIBRARIES)
set(CURL_TEST_ADD_LIBRARIES
"-DLINK_LIBRARIES:STRING=${CMAKE_REQUIRED_LIBRARIES}")
endif()
message(STATUS "Performing Curl Test ${CURL_TEST}")
try_compile(${CURL_TEST}
${CMAKE_BINARY_DIR}
${CMAKE_CURRENT_SOURCE_DIR}/CMake/CurlTests.c
CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_FUNCTION_DEFINITIONS}
"${CURL_TEST_ADD_LIBRARIES}"
OUTPUT_VARIABLE OUTPUT)
if(${CURL_TEST})
set(${CURL_TEST} 1 CACHE INTERNAL "Curl test ${FUNCTION}")
message(STATUS "Performing Curl Test ${CURL_TEST} - Success")
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
"Performing Curl Test ${CURL_TEST} passed with the following output:\n"
"${OUTPUT}\n")
else()
message(STATUS "Performing Curl Test ${CURL_TEST} - Failed")
set(${CURL_TEST} "" CACHE INTERNAL "Curl test ${FUNCTION}")
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
"Performing Curl Test ${CURL_TEST} failed with the following output:\n"
"${OUTPUT}\n")
endif()
endif()
endmacro()
macro(curl_nroff_check)
find_program(NROFF NAMES gnroff nroff)
if(NROFF)
# Need a way to write to stdin, this will do
file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/nroff-input.txt" "test")
# Tests for a valid nroff option to generate a manpage
foreach(_MANOPT "-man" "-mandoc")
execute_process(COMMAND "${NROFF}" ${_MANOPT}
OUTPUT_VARIABLE NROFF_MANOPT_OUTPUT
INPUT_FILE "${CMAKE_CURRENT_BINARY_DIR}/nroff-input.txt"
ERROR_QUIET)
# Save the option if it was valid
if(NROFF_MANOPT_OUTPUT)
message("Found *nroff option: -- ${_MANOPT}")
set(NROFF_MANOPT ${_MANOPT})
set(NROFF_USEFUL ON)
break()
endif()
endforeach()
# No need for the temporary file
file(REMOVE "${CMAKE_CURRENT_BINARY_DIR}/nroff-input.txt")
if(NOT NROFF_USEFUL)
message(WARNING "Found no *nroff option to get plaintext from man pages")
endif()
else()
message(WARNING "Found no *nroff program")
endif()
endmacro()
macro(optional_dependency DEPENDENCY)
set(CURL_${DEPENDENCY} AUTO CACHE STRING "Build curl with ${DEPENDENCY} support (AUTO, ON or OFF)")
set_property(CACHE CURL_${DEPENDENCY} PROPERTY STRINGS AUTO ON OFF)
if(CURL_${DEPENDENCY} STREQUAL AUTO)
find_package(${DEPENDENCY})
elseif(CURL_${DEPENDENCY})
find_package(${DEPENDENCY} REQUIRED)
endif()
endmacro()

@ -1,136 +0,0 @@
#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################
include(CheckCSourceCompiles)
# The begin of the sources (macros and includes)
set(_source_epilogue "#undef inline")
macro(add_header_include check header)
if(${check})
set(_source_epilogue "${_source_epilogue}\n#include <${header}>")
endif()
endmacro()
set(signature_call_conv)
if(HAVE_WINDOWS_H)
add_header_include(HAVE_WINSOCK2_H "winsock2.h")
add_header_include(HAVE_WINDOWS_H "windows.h")
set(_source_epilogue
"${_source_epilogue}\n#ifndef WIN32_LEAN_AND_MEAN\n#define WIN32_LEAN_AND_MEAN\n#endif")
set(signature_call_conv "PASCAL")
if(HAVE_LIBWS2_32)
set(CMAKE_REQUIRED_LIBRARIES ws2_32)
endif()
else()
add_header_include(HAVE_SYS_TYPES_H "sys/types.h")
add_header_include(HAVE_SYS_SOCKET_H "sys/socket.h")
endif()
set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)
check_c_source_compiles("${_source_epilogue}
int main(void) {
int flag = MSG_NOSIGNAL;
(void)flag;
return 0;
}" HAVE_MSG_NOSIGNAL)
if(NOT HAVE_WINDOWS_H)
add_header_include(HAVE_SYS_TIME_H "sys/time.h")
add_header_include(TIME_WITH_SYS_TIME "time.h")
add_header_include(HAVE_TIME_H "time.h")
endif()
check_c_source_compiles("${_source_epilogue}
int main(void) {
struct timeval ts;
ts.tv_sec = 0;
ts.tv_usec = 0;
(void)ts;
return 0;
}" HAVE_STRUCT_TIMEVAL)
if(HAVE_WINDOWS_H)
set(CMAKE_EXTRA_INCLUDE_FILES winsock2.h)
else()
set(CMAKE_EXTRA_INCLUDE_FILES)
if(HAVE_SYS_SOCKET_H)
set(CMAKE_EXTRA_INCLUDE_FILES sys/socket.h)
endif()
endif()
check_type_size("struct sockaddr_storage" SIZEOF_STRUCT_SOCKADDR_STORAGE)
if(HAVE_SIZEOF_STRUCT_SOCKADDR_STORAGE)
set(HAVE_STRUCT_SOCKADDR_STORAGE 1)
endif()
unset(CMAKE_TRY_COMPILE_TARGET_TYPE)
if(NOT CMAKE_CROSSCOMPILING)
if(NOT ${CMAKE_SYSTEM_NAME} MATCHES "Darwin" AND NOT ${CMAKE_SYSTEM_NAME} MATCHES "iOS")
# only try this on non-apple platforms
# if not cross-compilation...
include(CheckCSourceRuns)
set(CMAKE_REQUIRED_FLAGS "")
if(HAVE_SYS_POLL_H)
set(CMAKE_REQUIRED_FLAGS "-DHAVE_SYS_POLL_H")
elseif(HAVE_POLL_H)
set(CMAKE_REQUIRED_FLAGS "-DHAVE_POLL_H")
endif()
check_c_source_runs("
#include <stdlib.h>
#include <sys/time.h>
#ifdef HAVE_SYS_POLL_H
# include <sys/poll.h>
#elif HAVE_POLL_H
# include <poll.h>
#endif
int main(void)
{
if(0 != poll(0, 0, 10)) {
return 1; /* fail */
}
else {
/* detect the 10.12 poll() breakage */
struct timeval before, after;
int rc;
size_t us;
gettimeofday(&before, NULL);
rc = poll(NULL, 0, 500);
gettimeofday(&after, NULL);
us = (after.tv_sec - before.tv_sec) * 1000000 +
(after.tv_usec - before.tv_usec);
if(us < 400000) {
return 1;
}
}
return 0;
}" HAVE_POLL_FINE)
endif()
endif()

@ -1,197 +0,0 @@
#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################
include(CheckCCompilerFlag)
if(PICKY_COMPILER)
if(CMAKE_COMPILER_IS_GNUCC OR CMAKE_C_COMPILER_ID MATCHES "Clang")
# https://clang.llvm.org/docs/DiagnosticsReference.html
# https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html
# WPICKY_ENABLE = Options we want to enable as-is.
# WPICKY_DETECT = Options we want to test first and enable if available.
# Prefer the -Wextra alias with clang.
if(CMAKE_C_COMPILER_ID MATCHES "Clang")
set(WPICKY_ENABLE "-Wextra")
else()
set(WPICKY_ENABLE "-W")
endif()
list(APPEND WPICKY_ENABLE
-Wall -pedantic
)
# ----------------------------------
# Add new options here, if in doubt:
# ----------------------------------
set(WPICKY_DETECT
)
# Assume these options always exist with both clang and gcc.
# Require clang 3.0 / gcc 2.95 or later.
list(APPEND WPICKY_ENABLE
-Wbad-function-cast # clang 3.0 gcc 2.95
-Wconversion # clang 3.0 gcc 2.95
-Winline # clang 1.0 gcc 1.0
-Wmissing-declarations # clang 1.0 gcc 2.7
-Wmissing-prototypes # clang 1.0 gcc 1.0
-Wnested-externs # clang 1.0 gcc 2.7
-Wno-long-long # clang 1.0 gcc 2.95
-Wno-multichar # clang 1.0 gcc 2.95
-Wpointer-arith # clang 1.0 gcc 1.4
-Wshadow # clang 1.0 gcc 2.95
-Wsign-compare # clang 1.0 gcc 2.95
-Wundef # clang 1.0 gcc 2.95
-Wunused # clang 1.1 gcc 2.95
-Wwrite-strings # clang 1.0 gcc 1.4
)
# Always enable with clang, version dependent with gcc
set(WPICKY_COMMON_OLD
-Wcast-align # clang 1.0 gcc 4.2
-Wdeclaration-after-statement # clang 1.0 gcc 3.4
-Wempty-body # clang 3.0 gcc 4.3
-Wendif-labels # clang 1.0 gcc 3.3
-Wfloat-equal # clang 1.0 gcc 2.96 (3.0)
-Wignored-qualifiers # clang 3.0 gcc 4.3
-Wno-format-nonliteral # clang 1.0 gcc 2.96 (3.0)
-Wno-sign-conversion # clang 3.0 gcc 4.3
-Wno-system-headers # clang 1.0 gcc 3.0
-Wstrict-prototypes # clang 1.0 gcc 3.3
-Wtype-limits # clang 3.0 gcc 4.3
-Wvla # clang 2.8 gcc 4.3
)
set(WPICKY_COMMON
-Wdouble-promotion # clang 3.6 gcc 4.6 appleclang 6.3
-Wenum-conversion # clang 3.2 gcc 10.0 appleclang 4.6 g++ 11.0
-Wunused-const-variable # clang 3.4 gcc 6.0 appleclang 5.1
)
if(CMAKE_C_COMPILER_ID MATCHES "Clang")
list(APPEND WPICKY_ENABLE
${WPICKY_COMMON_OLD}
-Wshift-sign-overflow # clang 2.9
-Wshorten-64-to-32 # clang 1.0
)
# Enable based on compiler version
if((CMAKE_C_COMPILER_ID STREQUAL "Clang" AND NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 3.6) OR
(CMAKE_C_COMPILER_ID STREQUAL "AppleClang" AND NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 6.3))
list(APPEND WPICKY_ENABLE
${WPICKY_COMMON}
)
endif()
if((CMAKE_C_COMPILER_ID STREQUAL "Clang" AND NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 3.9) OR
(CMAKE_C_COMPILER_ID STREQUAL "AppleClang" AND NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 8.3))
list(APPEND WPICKY_ENABLE
-Wcomma # clang 3.9 appleclang 8.3
-Wmissing-variable-declarations # clang 3.2 appleclang 4.6
)
endif()
if((CMAKE_C_COMPILER_ID STREQUAL "Clang" AND NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 7.0) OR
(CMAKE_C_COMPILER_ID STREQUAL "AppleClang" AND NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 10.3))
list(APPEND WPICKY_ENABLE
-Wassign-enum # clang 7.0 appleclang 10.3
-Wextra-semi-stmt # clang 7.0 appleclang 10.3
)
endif()
else() # gcc
list(APPEND WPICKY_DETECT
${WPICKY_COMMON}
)
# Enable based on compiler version
if(NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.3)
list(APPEND WPICKY_ENABLE
${WPICKY_COMMON_OLD}
-Wmissing-parameter-type # gcc 4.3
-Wold-style-declaration # gcc 4.3
-Wstrict-aliasing=3 # gcc 4.0
)
endif()
if(NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.5 AND MINGW)
list(APPEND WPICKY_ENABLE
-Wno-pedantic-ms-format # gcc 4.5 (mingw-only)
)
endif()
if(NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.8)
list(APPEND WPICKY_ENABLE
-Wformat=2 # clang 3.0 gcc 4.8 (clang part-default, enabling it fully causes -Wformat-nonliteral warnings)
)
endif()
if(NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 5.0)
list(APPEND WPICKY_ENABLE
-Warray-bounds=2 -ftree-vrp # clang 3.0 gcc 5.0 (clang default: -Warray-bounds)
)
endif()
if(NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 6.0)
list(APPEND WPICKY_ENABLE
-Wduplicated-cond # gcc 6.0
-Wnull-dereference # clang 3.0 gcc 6.0 (clang default)
-fdelete-null-pointer-checks
-Wshift-negative-value # clang 3.7 gcc 6.0 (clang default)
-Wshift-overflow=2 # clang 3.0 gcc 6.0 (clang default: -Wshift-overflow)
)
endif()
if(NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 7.0)
list(APPEND WPICKY_ENABLE
-Walloc-zero # gcc 7.0
-Wduplicated-branches # gcc 7.0
-Wformat-overflow=2 # gcc 7.0
-Wformat-truncation=1 # gcc 7.0
-Wrestrict # gcc 7.0
)
endif()
if(NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 10.0)
list(APPEND WPICKY_ENABLE
-Warith-conversion # gcc 10.0
)
endif()
endif()
#
unset(WPICKY)
foreach(_CCOPT ${WPICKY_ENABLE})
set(WPICKY "${WPICKY} ${_CCOPT}")
endforeach()
foreach(_CCOPT ${WPICKY_DETECT})
# surprisingly, CHECK_C_COMPILER_FLAG needs a new variable to store each new
# test result in.
string(MAKE_C_IDENTIFIER "OPT${_CCOPT}" _optvarname)
# GCC only warns about unknown -Wno- options if there are also other diagnostic messages,
# so test for the positive form instead
string(REPLACE "-Wno-" "-W" _CCOPT_ON "${_CCOPT}")
check_c_compiler_flag(${_CCOPT_ON} ${_optvarname})
if(${_optvarname})
set(WPICKY "${WPICKY} ${_CCOPT}")
endif()
endforeach()
message(STATUS "Picky compiler options:${WPICKY}")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${WPICKY}")
endif()
endif()

@ -1,91 +0,0 @@
#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################
if(NOT UNIX)
if(WIN32)
set(HAVE_LIBSOCKET 0)
set(HAVE_GETHOSTNAME 1)
set(HAVE_LIBZ 0)
set(HAVE_ARPA_INET_H 0)
set(HAVE_FCNTL_H 1)
set(HAVE_IO_H 1)
set(HAVE_NETDB_H 0)
set(HAVE_NETINET_IN_H 0)
set(HAVE_NET_IF_H 0)
set(HAVE_PWD_H 0)
set(HAVE_SETJMP_H 1)
set(HAVE_SIGNAL_H 1)
set(HAVE_STDLIB_H 1)
set(HAVE_STRINGS_H 0)
set(HAVE_STRING_H 1)
set(HAVE_SYS_PARAM_H 0)
set(HAVE_SYS_POLL_H 0)
set(HAVE_SYS_SELECT_H 0)
set(HAVE_SYS_SOCKET_H 0)
set(HAVE_SYS_SOCKIO_H 0)
set(HAVE_SYS_STAT_H 1)
set(HAVE_SYS_TIME_H 0)
set(HAVE_SYS_TYPES_H 1)
set(HAVE_SYS_UTIME_H 1)
set(HAVE_TERMIOS_H 0)
set(HAVE_TERMIO_H 0)
set(HAVE_TIME_H 1)
set(HAVE_UTIME_H 0)
set(HAVE_SOCKET 1)
set(HAVE_SELECT 1)
set(HAVE_STRDUP 1)
set(HAVE_STRICMP 1)
set(HAVE_STRCMPI 1)
set(HAVE_GETTIMEOFDAY 0)
set(HAVE_CLOSESOCKET 1)
set(HAVE_SIGSETJMP 0)
set(HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID 1)
set(HAVE_GETPASS_R 0)
set(HAVE_GETPWUID 0)
set(HAVE_GETEUID 0)
set(HAVE_UTIME 1)
set(HAVE_RAND_EGD 0)
set(HAVE_GMTIME_R 0)
set(HAVE_GETHOSTBYNAME_R 0)
set(HAVE_SIGNAL 1)
set(HAVE_GETHOSTBYNAME_R_3 0)
set(HAVE_GETHOSTBYNAME_R_3_REENTRANT 0)
set(HAVE_GETHOSTBYNAME_R_5 0)
set(HAVE_GETHOSTBYNAME_R_5_REENTRANT 0)
set(HAVE_GETHOSTBYNAME_R_6 0)
set(HAVE_GETHOSTBYNAME_R_6_REENTRANT 0)
set(TIME_WITH_SYS_TIME 0)
set(HAVE_O_NONBLOCK 0)
set(HAVE_IN_ADDR_T 0)
set(STDC_HEADERS 1)
set(HAVE_SIGACTION 0)
set(HAVE_MACRO_SIGSETJMP 0)
else()
message("This file should be included on Windows platform only")
endif()
endif()

@ -1,35 +0,0 @@
#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################
# File containing various utilities
# Returns a list of arguments that evaluate to true
function(count_true output_count_var)
set(lst_len 0)
foreach(option_var IN LISTS ARGN)
if(${option_var})
math(EXPR lst_len "${lst_len} + 1")
endif()
endforeach()
set(${output_count_var} ${lst_len} PARENT_SCOPE)
endfunction()

@ -1,49 +0,0 @@
#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################
if(NOT EXISTS "@CMAKE_CURRENT_BINARY_DIR@/install_manifest.txt")
message(FATAL_ERROR "Cannot find install manifest: @CMAKE_CURRENT_BINARY_DIR@/install_manifest.txt")
endif()
if(NOT DEFINED CMAKE_INSTALL_PREFIX)
set(CMAKE_INSTALL_PREFIX "@CMAKE_INSTALL_PREFIX@")
endif()
message(${CMAKE_INSTALL_PREFIX})
file(READ "@CMAKE_CURRENT_BINARY_DIR@/install_manifest.txt" files)
string(REGEX REPLACE "\n" ";" files "${files}")
foreach(file ${files})
message(STATUS "Uninstalling $ENV{DESTDIR}${file}")
if(IS_SYMLINK "$ENV{DESTDIR}${file}" OR EXISTS "$ENV{DESTDIR}${file}")
exec_program(
"@CMAKE_COMMAND@" ARGS "-E remove \"$ENV{DESTDIR}${file}\""
OUTPUT_VARIABLE rm_out
RETURN_VALUE rm_retval
)
if(NOT "${rm_retval}" STREQUAL 0)
message(FATAL_ERROR "Problem when removing $ENV{DESTDIR}${file}")
endif()
else()
message(STATUS "File $ENV{DESTDIR}${file} does not exist.")
endif()
endforeach()

@ -1,35 +0,0 @@
#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################
@PACKAGE_INIT@
include(CMakeFindDependencyMacro)
if(@USE_OPENSSL@)
find_dependency(OpenSSL @OPENSSL_VERSION_MAJOR@)
endif()
if(@USE_ZLIB@)
find_dependency(ZLIB @ZLIB_VERSION_MAJOR@)
endif()
include("${CMAKE_CURRENT_LIST_DIR}/@TARGETS_EXPORT_NAME@.cmake")
check_required_components("@PROJECT_NAME@")

File diff suppressed because it is too large Load Diff

@ -1,22 +0,0 @@
COPYRIGHT AND PERMISSION NOTICE
Copyright (c) 1996 - 2023, Daniel Stenberg, <daniel@haxx.se>, and many
contributors, see the THANKS file.
All rights reserved.
Permission to use, copy, modify, and distribute this software for any purpose
with or without fee is hereby granted, provided that the above copyright
notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. IN
NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
OR OTHER DEALINGS IN THE SOFTWARE.
Except as contained in this notice, the name of a copyright holder shall not
be used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization of the copyright holder.

@ -1,160 +0,0 @@
#!/usr/bin/env bash
#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################
# This script performs all of the steps needed to build a
# universal binary libcurl.framework for Mac OS X 10.4 or greater.
#
# Hendrik Visage:
# Generalizations added since Snowleopard (10.6) do not include
# the 10.4u SDK.
#
# Also note:
# 10.5 is the *ONLY* SDK that support PPC64 :( -- 10.6 do not have ppc64 support
#If you need to have PPC64 support then change below to 1
PPC64_NEEDED=0
# Apple does not support building for PPC anymore in Xcode 4 and later.
# If you're using Xcode 3 or earlier and need PPC support, then change
# the setting below to 1
PPC_NEEDED=0
# For me the default is to develop for the platform I am on, and if you
#desire compatibility with older versions then change USE_OLD to 1 :)
USE_OLD=0
VERSION=`/usr/bin/sed -ne 's/^#define LIBCURL_VERSION "\(.*\)"/\1/p' include/curl/curlver.h`
FRAMEWORK_VERSION=Versions/Release-$VERSION
#I also wanted to "copy over" the system, and thus the reason I added the
# version to Versions/Release-7.20.1 etc.
# now a simple rsync -vaP libcurl.framework /Library/Frameworks will install it
# and setup the right paths to this version, leaving the system version
# "intact", so you can "fix" it later with the links to Versions/A/...
DEVELOPER_PATH=`xcode-select --print-path`
# Around Xcode 4.3, SDKs were moved from the Developer folder into the
# MacOSX.platform folder
if test -d "$DEVELOPER_PATH/Platforms/MacOSX.platform/Developer/SDKs"; then
SDK_PATH="$DEVELOPER_PATH/Platforms/MacOSX.platform/Developer/SDKs"
else
SDK_PATH="$DEVELOPER_PATH/SDKs"
fi
OLD_SDK=`ls $SDK_PATH|head -1`
NEW_SDK=`ls -r $SDK_PATH|head -1`
if test "0"$USE_OLD -gt 0
then
SDK32=$OLD_SDK
else
SDK32=$NEW_SDK
fi
MACVER=`echo $SDK32|sed -e s/[a-zA-Z]//g -e s/.\$//`
SDK32_DIR=$SDK_PATH/$SDK32
MINVER32='-mmacosx-version-min='$MACVER
if test $PPC_NEEDED -gt 0; then
ARCHES32='-arch i386 -arch ppc'
else
ARCHES32='-arch i386'
fi
if test $PPC64_NEEDED -gt 0
then
SDK64=10.5
ARCHES64='-arch x86_64 -arch ppc64'
SDK64=`ls $SDK_PATH | grep "10\.5" | head -1`
else
ARCHES64='-arch x86_64'
#We "know" that 10.4 and earlier do not support 64bit
OLD_SDK64=`ls $SDK_PATH | grep -v "10\.[0-4]" | head -1`
NEW_SDK64=`ls -r $SDK_PATH | grep -v "10\.[0-4][^0-9]" | head -1`
if test $USE_OLD -gt 0
then
SDK64=$OLD_SDK64
else
SDK64=$NEW_SDK64
fi
fi
SDK64_DIR=$SDK_PATH/$SDK64
MACVER64=`echo $SDK64|sed -e s/[a-zA-Z]//g -e s/.\$//`
MINVER64='-mmacosx-version-min='$MACVER64
if test ! -z $SDK32; then
echo "----Configuring libcurl for 32 bit universal framework..."
make clean
./configure --disable-dependency-tracking --disable-static --with-gssapi --with-secure-transport \
CFLAGS="-Os -isysroot $SDK32_DIR $ARCHES32" \
LDFLAGS="-Wl,-syslibroot,$SDK32_DIR $ARCHES32 -Wl,-headerpad_max_install_names" \
CC=$CC
echo "----Building 32 bit libcurl..."
make -j `sysctl -n hw.logicalcpu_max`
echo "----Creating 32 bit framework..."
rm -r libcurl.framework
mkdir -p libcurl.framework/${FRAMEWORK_VERSION}/Resources
cp lib/.libs/libcurl.dylib libcurl.framework/${FRAMEWORK_VERSION}/libcurl
install_name_tool -id @rpath/libcurl.framework/${FRAMEWORK_VERSION}/libcurl libcurl.framework/${FRAMEWORK_VERSION}/libcurl
cp lib/libcurl.plist libcurl.framework/${FRAMEWORK_VERSION}/Resources/Info.plist
mkdir -p libcurl.framework/${FRAMEWORK_VERSION}/Headers/curl
cp include/curl/*.h libcurl.framework/${FRAMEWORK_VERSION}/Headers/curl
pushd libcurl.framework
ln -fs ${FRAMEWORK_VERSION}/libcurl libcurl
ln -fs ${FRAMEWORK_VERSION}/Resources Resources
ln -fs ${FRAMEWORK_VERSION}/Headers Headers
cd Versions
ln -fs $(basename "${FRAMEWORK_VERSION}") Current
echo Testing for SDK64
if test -d $SDK64_DIR; then
echo entering...
popd
make clean
echo "----Configuring libcurl for 64 bit universal framework..."
./configure --disable-dependency-tracking --disable-static --with-gssapi --with-secure-transport \
CFLAGS="-Os -isysroot $SDK64_DIR $ARCHES64" \
LDFLAGS="-Wl,-syslibroot,$SDK64_DIR $ARCHES64 -Wl,-headerpad_max_install_names" \
CC=$CC
echo "----Building 64 bit libcurl..."
make -j `sysctl -n hw.logicalcpu_max`
echo "----Appending 64 bit framework to 32 bit framework..."
cp lib/.libs/libcurl.dylib libcurl.framework/${FRAMEWORK_VERSION}/libcurl64
install_name_tool -id @rpath/libcurl.framework/${FRAMEWORK_VERSION}/libcurl libcurl.framework/${FRAMEWORK_VERSION}/libcurl64
cp libcurl.framework/${FRAMEWORK_VERSION}/libcurl libcurl.framework/${FRAMEWORK_VERSION}/libcurl32
pwd
lipo libcurl.framework/${FRAMEWORK_VERSION}/libcurl32 libcurl.framework/${FRAMEWORK_VERSION}/libcurl64 -create -output libcurl.framework/${FRAMEWORK_VERSION}/libcurl
rm libcurl.framework/${FRAMEWORK_VERSION}/libcurl32 libcurl.framework/${FRAMEWORK_VERSION}/libcurl64
fi
pwd
lipo -info libcurl.framework/${FRAMEWORK_VERSION}/libcurl
echo "libcurl.framework is built and can now be included in other projects."
echo "Copy libcurl.framework to your bundle's Contents/Frameworks folder, ~/Library/Frameworks or /Library/Frameworks."
else
echo "Building libcurl.framework requires Mac OS X 10.4 or later with the MacOSX10.4/5/6 SDK installed."
fi

@ -1,92 +0,0 @@
#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################
all:
./configure
make
ssl:
./configure --with-openssl
make
mingw32:
$(MAKE) -C lib -f Makefile.mk
$(MAKE) -C src -f Makefile.mk
mingw32-clean:
$(MAKE) -C lib -f Makefile.mk clean
$(MAKE) -C src -f Makefile.mk clean
$(MAKE) -C docs/examples -f Makefile.mk clean
mingw32-vclean mingw32-distclean:
$(MAKE) -C lib -f Makefile.mk vclean
$(MAKE) -C src -f Makefile.mk vclean
$(MAKE) -C docs/examples -f Makefile.mk vclean
mingw32-examples%:
$(MAKE) -C docs/examples -f Makefile.mk CFG=$@
mingw32%:
$(MAKE) -C lib -f Makefile.mk CFG=$@
$(MAKE) -C src -f Makefile.mk CFG=$@
vc:
cd winbuild
nmake /f Makefile.vc MACHINE=x86
vc-x64:
cd winbuild
nmake /f Makefile.vc MACHINE=x64
djgpp%:
$(MAKE) -C lib -f Makefile.mk CFG=$@ CROSSPREFIX=i586-pc-msdosdjgpp-
$(MAKE) -C src -f Makefile.mk CFG=$@ CROSSPREFIX=i586-pc-msdosdjgpp-
cygwin:
./configure
make
cygwin-ssl:
./configure --with-openssl
make
amiga%:
$(MAKE) -C lib -f Makefile.mk CFG=$@ CROSSPREFIX=m68k-amigaos-
$(MAKE) -C src -f Makefile.mk CFG=$@ CROSSPREFIX=m68k-amigaos-
unix: all
unix-ssl: ssl
linux: all
linux-ssl: ssl
ca-bundle: scripts/mk-ca-bundle.pl
@echo "generate a fresh ca-bundle.crt"
@perl $< -b -l -u lib/ca-bundle.crt
ca-firefox: lib/firefox-db2pem.sh
@echo "generate a fresh ca-bundle.crt"
./lib/firefox-db2pem.sh lib/ca-bundle.crt

@ -1,614 +0,0 @@
#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################
AUTOMAKE_OPTIONS = foreign
ACLOCAL_AMFLAGS = -I m4
CMAKE_DIST = \
CMake/cmake_uninstall.cmake.in \
CMake/CMakeConfigurableFile.in \
CMake/curl-config.cmake.in \
CMake/CurlSymbolHiding.cmake \
CMake/CurlTests.c \
CMake/FindBearSSL.cmake \
CMake/FindBrotli.cmake \
CMake/FindCARES.cmake \
CMake/FindGSS.cmake \
CMake/FindLibPSL.cmake \
CMake/FindLibSSH2.cmake \
CMake/FindMbedTLS.cmake \
CMake/FindMSH3.cmake \
CMake/FindNGHTTP2.cmake \
CMake/FindNGHTTP3.cmake \
CMake/FindNGTCP2.cmake \
CMake/FindNSS.cmake \
CMake/FindQUICHE.cmake \
CMake/FindWolfSSL.cmake \
CMake/FindZstd.cmake \
CMake/Macros.cmake \
CMake/OtherTests.cmake \
CMake/PickyWarnings.cmake \
CMake/Platforms/WindowsCache.cmake \
CMake/Utilities.cmake \
CMakeLists.txt
VC10_LIBTMPL = projects/Windows/VC10/lib/libcurl.tmpl
VC10_LIBVCXPROJ = projects/Windows/VC10/lib/libcurl.vcxproj.dist
VC10_LIBVCXPROJ_DEPS = $(VC10_LIBTMPL) Makefile.am lib/Makefile.inc
VC10_SRCTMPL = projects/Windows/VC10/src/curl.tmpl
VC10_SRCVCXPROJ = projects/Windows/VC10/src/curl.vcxproj.dist
VC10_SRCVCXPROJ_DEPS = $(VC10_SRCTMPL) Makefile.am src/Makefile.inc
VC11_LIBTMPL = projects/Windows/VC11/lib/libcurl.tmpl
VC11_LIBVCXPROJ = projects/Windows/VC11/lib/libcurl.vcxproj.dist
VC11_LIBVCXPROJ_DEPS = $(VC11_LIBTMPL) Makefile.am lib/Makefile.inc
VC11_SRCTMPL = projects/Windows/VC11/src/curl.tmpl
VC11_SRCVCXPROJ = projects/Windows/VC11/src/curl.vcxproj.dist
VC11_SRCVCXPROJ_DEPS = $(VC11_SRCTMPL) Makefile.am src/Makefile.inc
VC12_LIBTMPL = projects/Windows/VC12/lib/libcurl.tmpl
VC12_LIBVCXPROJ = projects/Windows/VC12/lib/libcurl.vcxproj.dist
VC12_LIBVCXPROJ_DEPS = $(VC12_LIBTMPL) Makefile.am lib/Makefile.inc
VC12_SRCTMPL = projects/Windows/VC12/src/curl.tmpl
VC12_SRCVCXPROJ = projects/Windows/VC12/src/curl.vcxproj.dist
VC12_SRCVCXPROJ_DEPS = $(VC12_SRCTMPL) Makefile.am src/Makefile.inc
VC14_LIBTMPL = projects/Windows/VC14/lib/libcurl.tmpl
VC14_LIBVCXPROJ = projects/Windows/VC14/lib/libcurl.vcxproj.dist
VC14_LIBVCXPROJ_DEPS = $(VC14_LIBTMPL) Makefile.am lib/Makefile.inc
VC14_SRCTMPL = projects/Windows/VC14/src/curl.tmpl
VC14_SRCVCXPROJ = projects/Windows/VC14/src/curl.vcxproj.dist
VC14_SRCVCXPROJ_DEPS = $(VC14_SRCTMPL) Makefile.am src/Makefile.inc
VC14_10_LIBTMPL = projects/Windows/VC14.10/lib/libcurl.tmpl
VC14_10_LIBVCXPROJ = projects/Windows/VC14.10/lib/libcurl.vcxproj.dist
VC14_10_LIBVCXPROJ_DEPS = $(VC14_10_LIBTMPL) Makefile.am lib/Makefile.inc
VC14_10_SRCTMPL = projects/Windows/VC14.10/src/curl.tmpl
VC14_10_SRCVCXPROJ = projects/Windows/VC14.10/src/curl.vcxproj.dist
VC14_10_SRCVCXPROJ_DEPS = $(VC14_10_SRCTMPL) Makefile.am src/Makefile.inc
VC14_30_LIBTMPL = projects/Windows/VC14.30/lib/libcurl.tmpl
VC14_30_LIBVCXPROJ = projects/Windows/VC14.30/lib/libcurl.vcxproj.dist
VC14_30_LIBVCXPROJ_DEPS = $(VC14_30_LIBTMPL) Makefile.am lib/Makefile.inc
VC14_30_SRCTMPL = projects/Windows/VC14.30/src/curl.tmpl
VC14_30_SRCVCXPROJ = projects/Windows/VC14.30/src/curl.vcxproj.dist
VC14_30_SRCVCXPROJ_DEPS = $(VC14_30_SRCTMPL) Makefile.am src/Makefile.inc
VC_DIST = projects/README.md \
projects/build-openssl.bat \
projects/build-wolfssl.bat \
projects/checksrc.bat \
projects/Windows/VC10/curl-all.sln \
projects/Windows/VC10/lib/libcurl.sln \
projects/Windows/VC10/lib/libcurl.vcxproj.filters \
projects/Windows/VC10/src/curl.sln \
projects/Windows/VC10/src/curl.vcxproj.filters \
projects/Windows/VC11/curl-all.sln \
projects/Windows/VC11/lib/libcurl.sln \
projects/Windows/VC11/lib/libcurl.vcxproj.filters \
projects/Windows/VC11/src/curl.sln \
projects/Windows/VC11/src/curl.vcxproj.filters \
projects/Windows/VC12/curl-all.sln \
projects/Windows/VC12/lib/libcurl.sln \
projects/Windows/VC12/lib/libcurl.vcxproj.filters \
projects/Windows/VC12/src/curl.sln \
projects/Windows/VC12/src/curl.vcxproj.filters \
projects/Windows/VC14/curl-all.sln \
projects/Windows/VC14/lib/libcurl.sln \
projects/Windows/VC14/lib/libcurl.vcxproj.filters \
projects/Windows/VC14/src/curl.sln \
projects/Windows/VC14/src/curl.vcxproj.filters \
projects/Windows/VC14.10/curl-all.sln \
projects/Windows/VC14.10/lib/libcurl.sln \
projects/Windows/VC14.10/lib/libcurl.vcxproj.filters \
projects/Windows/VC14.10/src/curl.sln \
projects/Windows/VC14.10/src/curl.vcxproj.filters \
projects/Windows/VC14.30/curl-all.sln \
projects/Windows/VC14.30/lib/libcurl.sln \
projects/Windows/VC14.30/lib/libcurl.vcxproj.filters \
projects/Windows/VC14.30/src/curl.sln \
projects/Windows/VC14.30/src/curl.vcxproj.filters \
projects/generate.bat \
projects/wolfssl_options.h \
projects/wolfssl_override.props
WINBUILD_DIST = winbuild/README.md winbuild/gen_resp_file.bat \
winbuild/MakefileBuild.vc winbuild/Makefile.vc
PLAN9_DIST = plan9/include/mkfile \
plan9/include/mkfile \
plan9/mkfile.proto \
plan9/mkfile \
plan9/README \
plan9/lib/mkfile.inc \
plan9/lib/mkfile \
plan9/src/mkfile.inc \
plan9/src/mkfile
EXTRA_DIST = CHANGES COPYING maketgz Makefile.dist curl-config.in \
RELEASE-NOTES buildconf libcurl.pc.in MacOSX-Framework $(CMAKE_DIST) \
$(VC_DIST) $(WINBUILD_DIST) $(PLAN9_DIST) lib/libcurl.vers.in buildconf.bat
CLEANFILES = $(VC10_LIBVCXPROJ) $(VC10_SRCVCXPROJ) $(VC11_LIBVCXPROJ) \
$(VC11_SRCVCXPROJ) $(VC12_LIBVCXPROJ) $(VC12_SRCVCXPROJ) $(VC14_LIBVCXPROJ) \
$(VC14_SRCVCXPROJ) $(VC14_10_LIBVCXPROJ) $(VC14_10_SRCVCXPROJ) \
$(VC14_30_LIBVCXPROJ) $(VC14_30_SRCVCXPROJ)
bin_SCRIPTS = curl-config
SUBDIRS = lib src
DIST_SUBDIRS = $(SUBDIRS) tests packages scripts include docs
pkgconfigdir = $(libdir)/pkgconfig
pkgconfig_DATA = libcurl.pc
# List of files required to generate VC IDE .dsp, .vcproj and .vcxproj files
include lib/Makefile.inc
include src/Makefile.inc
dist-hook:
rm -rf $(top_builddir)/tests/log
find $(distdir) -name "*.dist" -exec rm {} \;
(distit=`find $(srcdir) -name "*.dist" | grep -v ./ares/`; \
for file in $$distit; do \
strip=`echo $$file | sed -e s/^$(srcdir)// -e s/\.dist//`; \
cp -p $$file $(distdir)$$strip; \
done)
html:
cd docs && $(MAKE) html
pdf:
cd docs && $(MAKE) pdf
check: test examples check-docs
if CROSSCOMPILING
test-full: test
test-torture: test
test:
@echo "NOTICE: we can't run the tests when cross-compiling!"
else
test:
@(cd tests; $(MAKE) all quiet-test)
test-full:
@(cd tests; $(MAKE) all full-test)
test-nonflaky:
@(cd tests; $(MAKE) all nonflaky-test)
test-torture:
@(cd tests; $(MAKE) all torture-test)
test-event:
@(cd tests; $(MAKE) all event-test)
test-am:
@(cd tests; $(MAKE) all am-test)
test-ci:
@(cd tests; $(MAKE) all ci-test)
endif
examples:
@(cd docs/examples; $(MAKE) check)
check-docs:
@(cd docs/libcurl; $(MAKE) check)
# Build source and binary rpms. For rpm-3.0 and above, the ~/.rpmmacros
# must contain the following line:
# %_topdir /home/loic/local/rpm
# and that /home/loic/local/rpm contains the directory SOURCES, BUILD etc.
#
# cd /home/loic/local/rpm ; mkdir -p SOURCES BUILD RPMS/i386 SPECS SRPMS
#
# If additional configure flags are needed to build the package, add the
# following in ~/.rpmmacros
# %configure CFLAGS="%{optflags}" ./configure %{_target_platform} --prefix=%{_prefix} ${AM_CONFIGFLAGS}
# and run make rpm in the following way:
# AM_CONFIGFLAGS='--with-uri=/home/users/loic/local/RedHat-6.2' make rpm
#
rpms:
$(MAKE) RPMDIST=curl rpm
$(MAKE) RPMDIST=curl-ssl rpm
rpm:
RPM_TOPDIR=`rpm --showrc | $(PERL) -n -e 'print if(s/.*_topdir\s+(.*)/$$1/)'` ; \
cp $(srcdir)/packages/Linux/RPM/$(RPMDIST).spec $$RPM_TOPDIR/SPECS ; \
cp $(PACKAGE)-$(VERSION).tar.gz $$RPM_TOPDIR/SOURCES ; \
rpm -ba --clean --rmsource $$RPM_TOPDIR/SPECS/$(RPMDIST).spec ; \
mv $$RPM_TOPDIR/RPMS/i386/$(RPMDIST)-*.rpm . ; \
mv $$RPM_TOPDIR/SRPMS/$(RPMDIST)-*.src.rpm .
#
# Build a Solaris pkgadd format file
# run 'make pkgadd' once you've done './configure' and 'make' to make a Solaris pkgadd format
# file (which ends up back in this directory).
# The pkgadd file is in 'pkgtrans' format, so to install on Solaris, do
# pkgadd -d ./HAXXcurl-*
#
# gak - libtool requires an absolute directory, hence the pwd below...
pkgadd:
umask 022 ; \
$(MAKE) install DESTDIR=`/bin/pwd`/packages/Solaris/root ; \
cat COPYING > $(srcdir)/packages/Solaris/copyright ; \
cd $(srcdir)/packages/Solaris && $(MAKE) package
#
# Build a cygwin binary tarball installation file
# resulting .tar.bz2 file will end up at packages/Win32/cygwin
cygwinbin:
$(MAKE) -C packages/Win32/cygwin cygwinbin
# We extend the standard install with a custom hook:
install-data-hook:
(cd include && $(MAKE) install)
(cd docs && $(MAKE) install)
(cd docs/libcurl && $(MAKE) install)
# We extend the standard uninstall with a custom hook:
uninstall-hook:
(cd include && $(MAKE) uninstall)
(cd docs && $(MAKE) uninstall)
(cd docs/libcurl && $(MAKE) uninstall)
ca-bundle: $(srcdir)/scripts/mk-ca-bundle.pl
@echo "generating a fresh ca-bundle.crt"
@perl $(srcdir)/scripts/mk-ca-bundle.pl -b -l -u lib/ca-bundle.crt
ca-firefox: $(srcdir)/scripts/firefox-db2pem.sh
@echo "generating a fresh ca-bundle.crt"
$(srcdir)/scripts/firefox-db2pem.sh lib/ca-bundle.crt
checksrc:
(cd lib && $(MAKE) checksrc)
(cd src && $(MAKE) checksrc)
(cd tests && $(MAKE) checksrc)
(cd include/curl && $(MAKE) checksrc)
(cd docs/examples && $(MAKE) checksrc)
(cd packages && $(MAKE) checksrc)
.PHONY: vc-ide
vc-ide: $(VC10_LIBVCXPROJ_DEPS) $(VC10_SRCVCXPROJ_DEPS) \
$(VC11_LIBVCXPROJ_DEPS) $(VC11_SRCVCXPROJ_DEPS) $(VC12_LIBVCXPROJ_DEPS) \
$(VC12_SRCVCXPROJ_DEPS) $(VC14_LIBVCXPROJ_DEPS) $(VC14_SRCVCXPROJ_DEPS) \
$(VC14_10_LIBVCXPROJ_DEPS) $(VC14_10_SRCVCXPROJ_DEPS) \
$(VC14_30_LIBVCXPROJ_DEPS) $(VC14_30_SRCVCXPROJ_DEPS)
@(win32_lib_srcs='$(LIB_CFILES)'; \
win32_lib_hdrs='$(LIB_HFILES) config-win32.h'; \
win32_lib_rc='$(LIB_RCFILES)'; \
win32_lib_vauth_srcs='$(LIB_VAUTH_CFILES)'; \
win32_lib_vauth_hdrs='$(LIB_VAUTH_HFILES)'; \
win32_lib_vquic_srcs='$(LIB_VQUIC_CFILES)'; \
win32_lib_vquic_hdrs='$(LIB_VQUIC_HFILES)'; \
win32_lib_vssh_srcs='$(LIB_VSSH_CFILES)'; \
win32_lib_vssh_hdrs='$(LIB_VSSH_HFILES)'; \
win32_lib_vtls_srcs='$(LIB_VTLS_CFILES)'; \
win32_lib_vtls_hdrs='$(LIB_VTLS_HFILES)'; \
win32_src_srcs='$(CURL_CFILES)'; \
win32_src_hdrs='$(CURL_HFILES)'; \
win32_src_rc='$(CURL_RCFILES)'; \
win32_src_x_srcs='$(CURLX_CFILES)'; \
win32_src_x_hdrs='$(CURLX_HFILES) ../lib/config-win32.h'; \
\
sorted_lib_srcs=`for file in $$win32_lib_srcs; do echo $$file; done | sort`; \
sorted_lib_hdrs=`for file in $$win32_lib_hdrs; do echo $$file; done | sort`; \
sorted_lib_vauth_srcs=`for file in $$win32_lib_vauth_srcs; do echo $$file; done | sort`; \
sorted_lib_vauth_hdrs=`for file in $$win32_lib_vauth_hdrs; do echo $$file; done | sort`; \
sorted_lib_vquic_srcs=`for file in $$win32_lib_vquic_srcs; do echo $$file; done | sort`; \
sorted_lib_vquic_hdrs=`for file in $$win32_lib_vquic_hdrs; do echo $$file; done | sort`; \
sorted_lib_vssh_srcs=`for file in $$win32_lib_vssh_srcs; do echo $$file; done | sort`; \
sorted_lib_vssh_hdrs=`for file in $$win32_lib_vssh_hdrs; do echo $$file; done | sort`; \
sorted_lib_vtls_srcs=`for file in $$win32_lib_vtls_srcs; do echo $$file; done | sort`; \
sorted_lib_vtls_hdrs=`for file in $$win32_lib_vtls_hdrs; do echo $$file; done | sort`; \
sorted_src_srcs=`for file in $$win32_src_srcs; do echo $$file; done | sort`; \
sorted_src_hdrs=`for file in $$win32_src_hdrs; do echo $$file; done | sort`; \
sorted_src_x_srcs=`for file in $$win32_src_x_srcs; do echo $$file; done | sort`; \
sorted_src_x_hdrs=`for file in $$win32_src_x_hdrs; do echo $$file; done | sort`; \
\
awk_code='\
function gen_element(type, dir, file)\
{\
sub(/vauth\//, "", file);\
sub(/vquic\//, "", file);\
sub(/vssh\//, "", file);\
sub(/vtls\//, "", file);\
\
spaces=" ";\
if(dir == "lib\\vauth" ||\
dir == "lib\\vquic" ||\
dir == "lib\\vssh" ||\
dir == "lib\\vtls")\
tabs=" ";\
else\
tabs=" ";\
\
if(type == "dsp") {\
printf("# Begin Source File\r\n");\
printf("\r\n");\
printf("SOURCE=..\\..\\..\\..\\%s\\%s\r\n", dir, file);\
printf("# End Source File\r\n");\
}\
else if(type == "vcproj1") {\
printf("%s<File\r\n", tabs);\
printf("%s RelativePath=\"..\\..\\..\\..\\%s\\%s\">\r\n",\
tabs, dir, file);\
printf("%s</File>\r\n", tabs);\
}\
else if(type == "vcproj2") {\
printf("%s<File\r\n", tabs);\
printf("%s RelativePath=\"..\\..\\..\\..\\%s\\%s\"\r\n",\
tabs, dir, file);\
printf("%s>\r\n", tabs);\
printf("%s</File>\r\n", tabs);\
}\
else if(type == "vcxproj") {\
i = index(file, ".");\
ext = substr(file, i == 0 ? 0 : i + 1);\
\
if(ext == "c")\
printf("%s<ClCompile Include=\"..\\..\\..\\..\\%s\\%s\" />\r\n",\
spaces, dir, file);\
else if(ext == "h")\
printf("%s<ClInclude Include=\"..\\..\\..\\..\\%s\\%s\" />\r\n",\
spaces, dir, file);\
else if(ext == "rc")\
printf("%s<ResourceCompile Include=\"..\\..\\..\\..\\%s\\%s\" />\r\n",\
spaces, dir, file);\
}\
}\
\
{\
\
if($$0 == "CURL_LIB_C_FILES") {\
split(lib_srcs, arr);\
for(val in arr) gen_element(proj_type, "lib", arr[val]);\
}\
else if($$0 == "CURL_LIB_H_FILES") {\
split(lib_hdrs, arr);\
for(val in arr) gen_element(proj_type, "lib", arr[val]);\
}\
else if($$0 == "CURL_LIB_RC_FILES") {\
split(lib_rc, arr);\
for(val in arr) gen_element(proj_type, "lib", arr[val]);\
}\
else if($$0 == "CURL_LIB_VAUTH_C_FILES") {\
split(lib_vauth_srcs, arr);\
for(val in arr) gen_element(proj_type, "lib\\vauth", arr[val]);\
}\
else if($$0 == "CURL_LIB_VAUTH_H_FILES") {\
split(lib_vauth_hdrs, arr);\
for(val in arr) gen_element(proj_type, "lib\\vauth", arr[val]);\
}\
else if($$0 == "CURL_LIB_VQUIC_C_FILES") {\
split(lib_vquic_srcs, arr);\
for(val in arr) gen_element(proj_type, "lib\\vquic", arr[val]);\
}\
else if($$0 == "CURL_LIB_VQUIC_H_FILES") {\
split(lib_vquic_hdrs, arr);\
for(val in arr) gen_element(proj_type, "lib\\vquic", arr[val]);\
}\
else if($$0 == "CURL_LIB_VSSH_C_FILES") {\
split(lib_vssh_srcs, arr);\
for(val in arr) gen_element(proj_type, "lib\\vssh", arr[val]);\
}\
else if($$0 == "CURL_LIB_VSSH_H_FILES") {\
split(lib_vssh_hdrs, arr);\
for(val in arr) gen_element(proj_type, "lib\\vssh", arr[val]);\
}\
else if($$0 == "CURL_LIB_VTLS_C_FILES") {\
split(lib_vtls_srcs, arr);\
for(val in arr) gen_element(proj_type, "lib\\vtls", arr[val]);\
}\
else if($$0 == "CURL_LIB_VTLS_H_FILES") {\
split(lib_vtls_hdrs, arr);\
for(val in arr) gen_element(proj_type, "lib\\vtls", arr[val]);\
}\
else if($$0 == "CURL_SRC_C_FILES") {\
split(src_srcs, arr);\
for(val in arr) gen_element(proj_type, "src", arr[val]);\
}\
else if($$0 == "CURL_SRC_H_FILES") {\
split(src_hdrs, arr);\
for(val in arr) gen_element(proj_type, "src", arr[val]);\
}\
else if($$0 == "CURL_SRC_RC_FILES") {\
split(src_rc, arr);\
for(val in arr) gen_element(proj_type, "src", arr[val]);\
}\
else if($$0 == "CURL_SRC_X_C_FILES") {\
split(src_x_srcs, arr);\
for(val in arr) {\
sub(/..\/lib\//, "", arr[val]);\
gen_element(proj_type, "lib", arr[val]);\
}\
}\
else if($$0 == "CURL_SRC_X_H_FILES") {\
split(src_x_hdrs, arr);\
for(val in arr) {\
sub(/..\/lib\//, "", arr[val]);\
gen_element(proj_type, "lib", arr[val]);\
}\
}\
else\
printf("%s\r\n", $$0);\
}';\
\
echo "generating '$(VC10_LIBVCXPROJ)'"; \
awk -v proj_type=vcxproj \
-v lib_srcs="$$sorted_lib_srcs" \
-v lib_hdrs="$$sorted_lib_hdrs" \
-v lib_rc="$$win32_lib_rc" \
-v lib_vauth_srcs="$$sorted_lib_vauth_srcs" \
-v lib_vauth_hdrs="$$sorted_lib_vauth_hdrs" \
-v lib_vquic_srcs="$$sorted_lib_vquic_srcs" \
-v lib_vquic_hdrs="$$sorted_lib_vquic_hdrs" \
-v lib_vssh_srcs="$$sorted_lib_vssh_srcs" \
-v lib_vssh_hdrs="$$sorted_lib_vssh_hdrs" \
-v lib_vtls_srcs="$$sorted_lib_vtls_srcs" \
-v lib_vtls_hdrs="$$sorted_lib_vtls_hdrs" \
"$$awk_code" $(srcdir)/$(VC10_LIBTMPL) > $(VC10_LIBVCXPROJ) || { exit 1; }; \
\
echo "generating '$(VC10_SRCVCXPROJ)'"; \
awk -v proj_type=vcxproj \
-v src_srcs="$$sorted_src_srcs" \
-v src_hdrs="$$sorted_src_hdrs" \
-v src_rc="$$win32_src_rc" \
-v src_x_srcs="$$sorted_src_x_srcs" \
-v src_x_hdrs="$$sorted_src_x_hdrs" \
"$$awk_code" $(srcdir)/$(VC10_SRCTMPL) > $(VC10_SRCVCXPROJ) || { exit 1; }; \
\
echo "generating '$(VC11_LIBVCXPROJ)'"; \
awk -v proj_type=vcxproj \
-v lib_srcs="$$sorted_lib_srcs" \
-v lib_hdrs="$$sorted_lib_hdrs" \
-v lib_rc="$$win32_lib_rc" \
-v lib_vauth_srcs="$$sorted_lib_vauth_srcs" \
-v lib_vauth_hdrs="$$sorted_lib_vauth_hdrs" \
-v lib_vquic_srcs="$$sorted_lib_vquic_srcs" \
-v lib_vquic_hdrs="$$sorted_lib_vquic_hdrs" \
-v lib_vssh_srcs="$$sorted_lib_vssh_srcs" \
-v lib_vssh_hdrs="$$sorted_lib_vssh_hdrs" \
-v lib_vtls_srcs="$$sorted_lib_vtls_srcs" \
-v lib_vtls_hdrs="$$sorted_lib_vtls_hdrs" \
"$$awk_code" $(srcdir)/$(VC11_LIBTMPL) > $(VC11_LIBVCXPROJ) || { exit 1; }; \
\
echo "generating '$(VC11_SRCVCXPROJ)'"; \
awk -v proj_type=vcxproj \
-v src_srcs="$$sorted_src_srcs" \
-v src_hdrs="$$sorted_src_hdrs" \
-v src_rc="$$win32_src_rc" \
-v src_x_srcs="$$sorted_src_x_srcs" \
-v src_x_hdrs="$$sorted_src_x_hdrs" \
"$$awk_code" $(srcdir)/$(VC11_SRCTMPL) > $(VC11_SRCVCXPROJ) || { exit 1; }; \
\
echo "generating '$(VC12_LIBVCXPROJ)'"; \
awk -v proj_type=vcxproj \
-v lib_srcs="$$sorted_lib_srcs" \
-v lib_hdrs="$$sorted_lib_hdrs" \
-v lib_rc="$$win32_lib_rc" \
-v lib_vauth_srcs="$$sorted_lib_vauth_srcs" \
-v lib_vauth_hdrs="$$sorted_lib_vauth_hdrs" \
-v lib_vquic_srcs="$$sorted_lib_vquic_srcs" \
-v lib_vquic_hdrs="$$sorted_lib_vquic_hdrs" \
-v lib_vssh_srcs="$$sorted_lib_vssh_srcs" \
-v lib_vssh_hdrs="$$sorted_lib_vssh_hdrs" \
-v lib_vtls_srcs="$$sorted_lib_vtls_srcs" \
-v lib_vtls_hdrs="$$sorted_lib_vtls_hdrs" \
"$$awk_code" $(srcdir)/$(VC12_LIBTMPL) > $(VC12_LIBVCXPROJ) || { exit 1; }; \
\
echo "generating '$(VC12_SRCVCXPROJ)'"; \
awk -v proj_type=vcxproj \
-v src_srcs="$$sorted_src_srcs" \
-v src_hdrs="$$sorted_src_hdrs" \
-v src_rc="$$win32_src_rc" \
-v src_x_srcs="$$sorted_src_x_srcs" \
-v src_x_hdrs="$$sorted_src_x_hdrs" \
"$$awk_code" $(srcdir)/$(VC12_SRCTMPL) > $(VC12_SRCVCXPROJ) || { exit 1; }; \
\
echo "generating '$(VC14_LIBVCXPROJ)'"; \
awk -v proj_type=vcxproj \
-v lib_srcs="$$sorted_lib_srcs" \
-v lib_hdrs="$$sorted_lib_hdrs" \
-v lib_rc="$$win32_lib_rc" \
-v lib_vauth_srcs="$$sorted_lib_vauth_srcs" \
-v lib_vauth_hdrs="$$sorted_lib_vauth_hdrs" \
-v lib_vquic_srcs="$$sorted_lib_vquic_srcs" \
-v lib_vquic_hdrs="$$sorted_lib_vquic_hdrs" \
-v lib_vssh_srcs="$$sorted_lib_vssh_srcs" \
-v lib_vssh_hdrs="$$sorted_lib_vssh_hdrs" \
-v lib_vtls_srcs="$$sorted_lib_vtls_srcs" \
-v lib_vtls_hdrs="$$sorted_lib_vtls_hdrs" \
"$$awk_code" $(srcdir)/$(VC14_LIBTMPL) > $(VC14_LIBVCXPROJ) || { exit 1; }; \
\
echo "generating '$(VC14_SRCVCXPROJ)'"; \
awk -v proj_type=vcxproj \
-v src_srcs="$$sorted_src_srcs" \
-v src_hdrs="$$sorted_src_hdrs" \
-v src_rc="$$win32_src_rc" \
-v src_x_srcs="$$sorted_src_x_srcs" \
-v src_x_hdrs="$$sorted_src_x_hdrs" \
"$$awk_code" $(srcdir)/$(VC14_SRCTMPL) > $(VC14_SRCVCXPROJ) || { exit 1; }; \
\
echo "generating '$(VC14_10_LIBVCXPROJ)'"; \
awk -v proj_type=vcxproj \
-v lib_srcs="$$sorted_lib_srcs" \
-v lib_hdrs="$$sorted_lib_hdrs" \
-v lib_rc="$$win32_lib_rc" \
-v lib_vauth_srcs="$$sorted_lib_vauth_srcs" \
-v lib_vauth_hdrs="$$sorted_lib_vauth_hdrs" \
-v lib_vquic_srcs="$$sorted_lib_vquic_srcs" \
-v lib_vquic_hdrs="$$sorted_lib_vquic_hdrs" \
-v lib_vssh_srcs="$$sorted_lib_vssh_srcs" \
-v lib_vssh_hdrs="$$sorted_lib_vssh_hdrs" \
-v lib_vtls_srcs="$$sorted_lib_vtls_srcs" \
-v lib_vtls_hdrs="$$sorted_lib_vtls_hdrs" \
"$$awk_code" $(srcdir)/$(VC14_10_LIBTMPL) > $(VC14_10_LIBVCXPROJ) || { exit 1; }; \
\
echo "generating '$(VC14_10_SRCVCXPROJ)'"; \
awk -v proj_type=vcxproj \
-v src_srcs="$$sorted_src_srcs" \
-v src_hdrs="$$sorted_src_hdrs" \
-v src_rc="$$win32_src_rc" \
-v src_x_srcs="$$sorted_src_x_srcs" \
-v src_x_hdrs="$$sorted_src_x_hdrs" \
"$$awk_code" $(srcdir)/$(VC14_10_SRCTMPL) > $(VC14_10_SRCVCXPROJ) || { exit 1; }; \
\
echo "generating '$(VC14_30_LIBVCXPROJ)'"; \
awk -v proj_type=vcxproj \
-v lib_srcs="$$sorted_lib_srcs" \
-v lib_hdrs="$$sorted_lib_hdrs" \
-v lib_rc="$$win32_lib_rc" \
-v lib_vauth_srcs="$$sorted_lib_vauth_srcs" \
-v lib_vauth_hdrs="$$sorted_lib_vauth_hdrs" \
-v lib_vquic_srcs="$$sorted_lib_vquic_srcs" \
-v lib_vquic_hdrs="$$sorted_lib_vquic_hdrs" \
-v lib_vssh_srcs="$$sorted_lib_vssh_srcs" \
-v lib_vssh_hdrs="$$sorted_lib_vssh_hdrs" \
-v lib_vtls_srcs="$$sorted_lib_vtls_srcs" \
-v lib_vtls_hdrs="$$sorted_lib_vtls_hdrs" \
"$$awk_code" $(srcdir)/$(VC14_30_LIBTMPL) > $(VC14_30_LIBVCXPROJ) || { exit 1; }; \
\
echo "generating '$(VC14_30_SRCVCXPROJ)'"; \
awk -v proj_type=vcxproj \
-v src_srcs="$$sorted_src_srcs" \
-v src_hdrs="$$sorted_src_hdrs" \
-v src_rc="$$win32_src_rc" \
-v src_x_srcs="$$sorted_src_x_srcs" \
-v src_x_hdrs="$$sorted_src_x_hdrs" \
"$$awk_code" $(srcdir)/$(VC14_30_SRCTMPL) > $(VC14_30_SRCVCXPROJ) || { exit 1; };)
tidy:
(cd src && $(MAKE) tidy)
(cd lib && $(MAKE) tidy)

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@ -1,55 +0,0 @@
_ _ ____ _
___| | | | _ \| |
/ __| | | | |_) | |
| (__| |_| | _ <| |___
\___|\___/|_| \_\_____|
README
Curl is a command line tool for transferring data specified with URL
syntax. Find out how to use curl by reading the curl.1 man page or the
MANUAL document. Find out how to install Curl by reading the INSTALL
document.
libcurl is the library curl is using to do its job. It is readily
available to be used by your software. Read the libcurl.3 man page to
learn how.
You find answers to the most frequent questions we get in the FAQ document.
Study the COPYING file for distribution terms.
Those documents and more can be found in the docs/ directory.
CONTACT
If you have problems, questions, ideas or suggestions, please contact us
by posting to a suitable mailing list. See https://curl.se/mail/
All contributors to the project are listed in the THANKS document.
WEBSITE
Visit the curl website for the latest news and downloads:
https://curl.se/
GIT
To download the latest source code off the GIT server, do this:
git clone https://github.com/curl/curl.git
(you will get a directory named curl created, filled with the source code)
SECURITY PROBLEMS
Report suspected security problems via our HackerOne page and not in public.
https://hackerone.com/curl
NOTICE
Curl contains pieces of source code that is Copyright (c) 1998, 1999
Kungliga Tekniska Högskolan. This notice is included here to comply with the
distribution terms.

@ -1,61 +0,0 @@
curl and libcurl 8.1.2
Public curl releases: 219
Command line options: 251
curl_easy_setopt() options: 302
Public functions in libcurl: 91
Contributors: 2888
This release includes the following bugfixes:
o configure: quote the assignments for run-compiler [1]
o configure: without pkg-config and no custom path, use -lnghttp2 [8]
o curl: cache the --trace-time value for a second [9]
o http2: fix EOF handling on uploads with auth negotiation [7]
o http3: send EOF indicator early as possible [11]
o lib1560: verify more scheme guessing [5]
o lib: remove unused functions, make single-use static [3]
o libcurl.m4: remove trailing 'dnl' that causes this to break autoconf [10]
o libssh: when keyboard-interactive auth fails, try password [4]
o misc: fix spelling mistakes [2]
o page-header: mention curl version and how to figure out current release [13]
o page-header: minor wording polish in the URL segment [12]
o scripts/singleuse.pl: add more API calls
o urlapi: remove superfluous host name check [6]
This release includes the following known bugs:
o see docs/KNOWN_BUGS (https://curl.se/docs/knownbugs.html)
Planned upcoming removals include:
o gskit
o NSS
o support for space-separated NOPROXY patterns
o support for the original legacy mingw version 1
See https://curl.se/dev/deprecate.html for details
This release would not have looked like this without help, code, reports and
advice from friends like these:
Aleksander Mazur, Christian Hesse, correctmost on github, Dan Fandrich,
Daniel Stenberg, Emanuele Torre, Gisle Vanem, Kev Jackson,
musvaage on github, Sergey Fionov, Stefan Eissing, Viktor Szakats, 左潇峰
(13 contributors)
References to bug reports and discussions on issues:
[1] = https://curl.se/bug/?i=11179
[2] = https://curl.se/bug/?i=11171
[3] = https://curl.se/bug/?i=11174
[4] = https://curl.se/bug/?i=11196
[5] = https://curl.se/bug/?i=11219
[6] = https://curl.se/bug/?i=11195
[7] = https://curl.se/bug/?i=11194
[8] = https://curl.se/bug/?i=11186
[9] = https://curl.se/bug/?i=11211
[10] = https://curl.se/bug/?i=11212
[11] = https://curl.se/bug/?i=11205
[12] = https://curl.se/bug/?i=11217
[13] = https://curl.se/bug/?i=11216

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File diff suppressed because it is too large Load Diff

@ -1,8 +0,0 @@
#!/bin/sh
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# SPDX-License-Identifier: curl
echo "*** Do not use buildconf. Instead, just use: autoreconf -fi" >&2
exec ${AUTORECONF:-autoreconf} -fi "${@}"

@ -1,319 +0,0 @@
@echo off
rem ***************************************************************************
rem * _ _ ____ _
rem * Project ___| | | | _ \| |
rem * / __| | | | |_) | |
rem * | (__| |_| | _ <| |___
rem * \___|\___/|_| \_\_____|
rem *
rem * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
rem *
rem * This software is licensed as described in the file COPYING, which
rem * you should have received as part of this distribution. The terms
rem * are also available at https://curl.se/docs/copyright.html.
rem *
rem * You may opt to use, copy, modify, merge, publish, distribute and/or sell
rem * copies of the Software, and permit persons to whom the Software is
rem * furnished to do so, under the terms of the COPYING file.
rem *
rem * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
rem * KIND, either express or implied.
rem *
rem * SPDX-License-Identifier: curl
rem *
rem ***************************************************************************
rem NOTES
rem
rem This batch file must be used to set up a git tree to build on systems where
rem there is no autotools support (i.e. DOS and Windows).
rem
:begin
rem Set our variables
if "%OS%" == "Windows_NT" setlocal
set MODE=GENERATE
rem Switch to this batch file's directory
cd /d "%~0\.." 1>NUL 2>&1
rem Check we are running from a curl git repository
if not exist GIT-INFO goto norepo
rem Detect programs. HAVE_<PROGNAME>
rem When not found the variable is set undefined. The undefined pattern
rem allows for statements like "if not defined HAVE_PERL (command)"
groff --version <NUL 1>NUL 2>&1
if errorlevel 1 (set HAVE_GROFF=) else (set HAVE_GROFF=Y)
nroff --version <NUL 1>NUL 2>&1
if errorlevel 1 (set HAVE_NROFF=) else (set HAVE_NROFF=Y)
perl --version <NUL 1>NUL 2>&1
if errorlevel 1 (set HAVE_PERL=) else (set HAVE_PERL=Y)
gzip --version <NUL 1>NUL 2>&1
if errorlevel 1 (set HAVE_GZIP=) else (set HAVE_GZIP=Y)
:parseArgs
if "%~1" == "" goto start
if /i "%~1" == "-clean" (
set MODE=CLEAN
) else if /i "%~1" == "-?" (
goto syntax
) else if /i "%~1" == "-h" (
goto syntax
) else if /i "%~1" == "-help" (
goto syntax
) else (
goto unknown
)
shift & goto parseArgs
:start
if "%MODE%" == "GENERATE" (
echo.
echo Generating prerequisite files
call :generate
if errorlevel 3 goto nogenhugehelp
if errorlevel 2 goto nogenmakefile
if errorlevel 1 goto warning
) else (
echo.
echo Removing prerequisite files
call :clean
if errorlevel 2 goto nocleanhugehelp
if errorlevel 1 goto nocleanmakefile
)
goto success
rem Main generate function.
rem
rem Returns:
rem
rem 0 - success
rem 1 - success with simplified tool_hugehelp.c
rem 2 - failed to generate Makefile
rem 3 - failed to generate tool_hugehelp.c
rem
:generate
if "%OS%" == "Windows_NT" setlocal
set BASIC_HUGEHELP=0
rem Create Makefile
echo * %CD%\Makefile
if exist Makefile.dist (
copy /Y Makefile.dist Makefile 1>NUL 2>&1
if errorlevel 1 (
if "%OS%" == "Windows_NT" endlocal
exit /B 2
)
)
rem Create tool_hugehelp.c
echo * %CD%\src\tool_hugehelp.c
call :genHugeHelp
if errorlevel 2 (
if "%OS%" == "Windows_NT" endlocal
exit /B 3
)
if errorlevel 1 (
set BASIC_HUGEHELP=1
)
cmd /c exit 0
rem Setup c-ares git tree
if exist ares\buildconf.bat (
echo.
echo Configuring c-ares build environment
cd ares
call buildconf.bat
cd ..
)
if "%BASIC_HUGEHELP%" == "1" (
if "%OS%" == "Windows_NT" endlocal
exit /B 1
)
if "%OS%" == "Windows_NT" endlocal
exit /B 0
rem Main clean function.
rem
rem Returns:
rem
rem 0 - success
rem 1 - failed to clean Makefile
rem 2 - failed to clean tool_hugehelp.c
rem
:clean
rem Remove Makefile
echo * %CD%\Makefile
if exist Makefile (
del Makefile 2>NUL
if exist Makefile (
exit /B 1
)
)
rem Remove tool_hugehelp.c
echo * %CD%\src\tool_hugehelp.c
if exist src\tool_hugehelp.c (
del src\tool_hugehelp.c 2>NUL
if exist src\tool_hugehelp.c (
exit /B 2
)
)
exit /B
rem Function to generate src\tool_hugehelp.c
rem
rem Returns:
rem
rem 0 - full tool_hugehelp.c generated
rem 1 - simplified tool_hugehelp.c
rem 2 - failure
rem
:genHugeHelp
if "%OS%" == "Windows_NT" setlocal
set LC_ALL=C
set ROFFCMD=
set BASIC=1
if defined HAVE_PERL (
if defined HAVE_GROFF (
set ROFFCMD=groff -mtty-char -Tascii -P-c -man
) else if defined HAVE_NROFF (
set ROFFCMD=nroff -c -Tascii -man
)
)
if defined ROFFCMD (
echo #include "tool_setup.h"> src\tool_hugehelp.c
echo #include "tool_hugehelp.h">> src\tool_hugehelp.c
if defined HAVE_GZIP (
echo #ifndef HAVE_LIBZ>> src\tool_hugehelp.c
)
%ROFFCMD% docs\curl.1 2>NUL | perl src\mkhelp.pl docs\MANUAL >> src\tool_hugehelp.c
if defined HAVE_GZIP (
echo #else>> src\tool_hugehelp.c
%ROFFCMD% docs\curl.1 2>NUL | perl src\mkhelp.pl -c docs\MANUAL >> src\tool_hugehelp.c
echo #endif /^* HAVE_LIBZ ^*/>> src\tool_hugehelp.c
)
set BASIC=0
) else (
if exist src\tool_hugehelp.c.cvs (
copy /Y src\tool_hugehelp.c.cvs src\tool_hugehelp.c 1>NUL 2>&1
) else (
echo #include "tool_setup.h"> src\tool_hugehelp.c
echo #include "tool_hugehelp.h">> src\tool_hugehelp.c
echo.>> src\tool_hugehelp.c
echo void hugehelp(void^)>> src\tool_hugehelp.c
echo {>> src\tool_hugehelp.c
echo #ifdef USE_MANUAL>> src\tool_hugehelp.c
echo fputs("Built-in manual not included\n", stdout^);>> src\tool_hugehelp.c
echo #endif>> src\tool_hugehelp.c
echo }>> src\tool_hugehelp.c
)
)
findstr "/C:void hugehelp(void)" src\tool_hugehelp.c 1>NUL 2>&1
if errorlevel 1 (
if "%OS%" == "Windows_NT" endlocal
exit /B 2
)
if "%BASIC%" == "1" (
if "%OS%" == "Windows_NT" endlocal
exit /B 1
)
if "%OS%" == "Windows_NT" endlocal
exit /B 0
rem Function to clean-up local variables under DOS, Windows 3.x and
rem Windows 9x as setlocal isn't available until Windows NT
rem
:dosCleanup
set MODE=
set HAVE_GROFF=
set HAVE_NROFF=
set HAVE_PERL=
set HAVE_GZIP=
set BASIC_HUGEHELP=
set LC_ALL
set ROFFCMD=
set BASIC=
exit /B
:syntax
rem Display the help
echo.
echo Usage: buildconf [-clean]
echo.
echo -clean - Removes the files
goto error
:unknown
echo.
echo Error: Unknown argument '%1'
goto error
:norepo
echo.
echo Error: This batch file should only be used with a curl git repository
goto error
:nogenmakefile
echo.
echo Error: Unable to generate Makefile
goto error
:nogenhugehelp
echo.
echo Error: Unable to generate src\tool_hugehelp.c
goto error
:nocleanmakefile
echo.
echo Error: Unable to clean Makefile
goto error
:nocleanhugehelp
echo.
echo Error: Unable to clean src\tool_hugehelp.c
goto error
:warning
echo.
echo Warning: The curl manual could not be integrated in the source. This means when
echo you build curl the manual will not be available (curl --man^). Integration of
echo the manual is not required and a summary of the options will still be available
echo (curl --help^). To integrate the manual your PATH is required to have
echo groff/nroff, perl and optionally gzip for compression.
goto success
:error
if "%OS%" == "Windows_NT" (
endlocal
) else (
call :dosCleanup
)
exit /B 1
:success
if "%OS%" == "Windows_NT" (
endlocal
) else (
call :dosCleanup
)
exit /B 0

@ -1,348 +0,0 @@
#! /bin/sh
# Wrapper for compilers which do not understand '-c -o'.
scriptversion=2018-03-07.03; # UTC
# Copyright (C) 1999-2021 Free Software Foundation, Inc.
# Written by Tom Tromey <tromey@cygnus.com>.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
# As a special exception to the GNU General Public License, if you
# distribute this file as part of a program that contains a
# configuration script generated by Autoconf, you may include it under
# the same distribution terms that you use for the rest of that program.
# This file is maintained in Automake, please report
# bugs to <bug-automake@gnu.org> or send patches to
# <automake-patches@gnu.org>.
nl='
'
# We need space, tab and new line, in precisely that order. Quoting is
# there to prevent tools from complaining about whitespace usage.
IFS=" "" $nl"
file_conv=
# func_file_conv build_file lazy
# Convert a $build file to $host form and store it in $file
# Currently only supports Windows hosts. If the determined conversion
# type is listed in (the comma separated) LAZY, no conversion will
# take place.
func_file_conv ()
{
file=$1
case $file in
/ | /[!/]*) # absolute file, and not a UNC file
if test -z "$file_conv"; then
# lazily determine how to convert abs files
case `uname -s` in
MINGW*)
file_conv=mingw
;;
CYGWIN* | MSYS*)
file_conv=cygwin
;;
*)
file_conv=wine
;;
esac
fi
case $file_conv/,$2, in
*,$file_conv,*)
;;
mingw/*)
file=`cmd //C echo "$file " | sed -e 's/"\(.*\) " *$/\1/'`
;;
cygwin/* | msys/*)
file=`cygpath -m "$file" || echo "$file"`
;;
wine/*)
file=`winepath -w "$file" || echo "$file"`
;;
esac
;;
esac
}
# func_cl_dashL linkdir
# Make cl look for libraries in LINKDIR
func_cl_dashL ()
{
func_file_conv "$1"
if test -z "$lib_path"; then
lib_path=$file
else
lib_path="$lib_path;$file"
fi
linker_opts="$linker_opts -LIBPATH:$file"
}
# func_cl_dashl library
# Do a library search-path lookup for cl
func_cl_dashl ()
{
lib=$1
found=no
save_IFS=$IFS
IFS=';'
for dir in $lib_path $LIB
do
IFS=$save_IFS
if $shared && test -f "$dir/$lib.dll.lib"; then
found=yes
lib=$dir/$lib.dll.lib
break
fi
if test -f "$dir/$lib.lib"; then
found=yes
lib=$dir/$lib.lib
break
fi
if test -f "$dir/lib$lib.a"; then
found=yes
lib=$dir/lib$lib.a
break
fi
done
IFS=$save_IFS
if test "$found" != yes; then
lib=$lib.lib
fi
}
# func_cl_wrapper cl arg...
# Adjust compile command to suit cl
func_cl_wrapper ()
{
# Assume a capable shell
lib_path=
shared=:
linker_opts=
for arg
do
if test -n "$eat"; then
eat=
else
case $1 in
-o)
# configure might choose to run compile as 'compile cc -o foo foo.c'.
eat=1
case $2 in
*.o | *.[oO][bB][jJ])
func_file_conv "$2"
set x "$@" -Fo"$file"
shift
;;
*)
func_file_conv "$2"
set x "$@" -Fe"$file"
shift
;;
esac
;;
-I)
eat=1
func_file_conv "$2" mingw
set x "$@" -I"$file"
shift
;;
-I*)
func_file_conv "${1#-I}" mingw
set x "$@" -I"$file"
shift
;;
-l)
eat=1
func_cl_dashl "$2"
set x "$@" "$lib"
shift
;;
-l*)
func_cl_dashl "${1#-l}"
set x "$@" "$lib"
shift
;;
-L)
eat=1
func_cl_dashL "$2"
;;
-L*)
func_cl_dashL "${1#-L}"
;;
-static)
shared=false
;;
-Wl,*)
arg=${1#-Wl,}
save_ifs="$IFS"; IFS=','
for flag in $arg; do
IFS="$save_ifs"
linker_opts="$linker_opts $flag"
done
IFS="$save_ifs"
;;
-Xlinker)
eat=1
linker_opts="$linker_opts $2"
;;
-*)
set x "$@" "$1"
shift
;;
*.cc | *.CC | *.cxx | *.CXX | *.[cC]++)
func_file_conv "$1"
set x "$@" -Tp"$file"
shift
;;
*.c | *.cpp | *.CPP | *.lib | *.LIB | *.Lib | *.OBJ | *.obj | *.[oO])
func_file_conv "$1" mingw
set x "$@" "$file"
shift
;;
*)
set x "$@" "$1"
shift
;;
esac
fi
shift
done
if test -n "$linker_opts"; then
linker_opts="-link$linker_opts"
fi
exec "$@" $linker_opts
exit 1
}
eat=
case $1 in
'')
echo "$0: No command. Try '$0 --help' for more information." 1>&2
exit 1;
;;
-h | --h*)
cat <<\EOF
Usage: compile [--help] [--version] PROGRAM [ARGS]
Wrapper for compilers which do not understand '-c -o'.
Remove '-o dest.o' from ARGS, run PROGRAM with the remaining
arguments, and rename the output as expected.
If you are trying to build a whole package this is not the
right script to run: please start by reading the file 'INSTALL'.
Report bugs to <bug-automake@gnu.org>.
EOF
exit $?
;;
-v | --v*)
echo "compile $scriptversion"
exit $?
;;
cl | *[/\\]cl | cl.exe | *[/\\]cl.exe | \
icl | *[/\\]icl | icl.exe | *[/\\]icl.exe )
func_cl_wrapper "$@" # Doesn't return...
;;
esac
ofile=
cfile=
for arg
do
if test -n "$eat"; then
eat=
else
case $1 in
-o)
# configure might choose to run compile as 'compile cc -o foo foo.c'.
# So we strip '-o arg' only if arg is an object.
eat=1
case $2 in
*.o | *.obj)
ofile=$2
;;
*)
set x "$@" -o "$2"
shift
;;
esac
;;
*.c)
cfile=$1
set x "$@" "$1"
shift
;;
*)
set x "$@" "$1"
shift
;;
esac
fi
shift
done
if test -z "$ofile" || test -z "$cfile"; then
# If no '-o' option was seen then we might have been invoked from a
# pattern rule where we don't need one. That is ok -- this is a
# normal compilation that the losing compiler can handle. If no
# '.c' file was seen then we are probably linking. That is also
# ok.
exec "$@"
fi
# Name of file we expect compiler to create.
cofile=`echo "$cfile" | sed 's|^.*[\\/]||; s|^[a-zA-Z]:||; s/\.c$/.o/'`
# Create the lock directory.
# Note: use '[/\\:.-]' here to ensure that we don't use the same name
# that we are using for the .o file. Also, base the name on the expected
# object file name, since that is what matters with a parallel build.
lockdir=`echo "$cofile" | sed -e 's|[/\\:.-]|_|g'`.d
while true; do
if mkdir "$lockdir" >/dev/null 2>&1; then
break
fi
sleep 1
done
# FIXME: race condition here if user kills between mkdir and trap.
trap "rmdir '$lockdir'; exit 1" 1 2 15
# Run the compile.
"$@"
ret=$?
if test -f "$cofile"; then
test "$cofile" = "$ofile" || mv "$cofile" "$ofile"
elif test -f "${cofile}bj"; then
test "${cofile}bj" = "$ofile" || mv "${cofile}bj" "$ofile"
fi
rmdir "$lockdir"
exit $ret
# Local Variables:
# mode: shell-script
# sh-indentation: 2
# eval: (add-hook 'before-save-hook 'time-stamp)
# time-stamp-start: "scriptversion="
# time-stamp-format: "%:y-%02m-%02d.%02H"
# time-stamp-time-zone: "UTC0"
# time-stamp-end: "; # UTC"
# End:

File diff suppressed because it is too large Load Diff

File diff suppressed because it is too large Load Diff

File diff suppressed because it is too large Load Diff

File diff suppressed because it is too large Load Diff

@ -1,196 +0,0 @@
#! /bin/sh
#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################
prefix="@prefix@"
exec_prefix=@exec_prefix@
includedir=@includedir@
cppflag_curl_staticlib=@CPPFLAG_CURL_STATICLIB@
usage()
{
cat <<EOF
Usage: curl-config [OPTION]
Available values for OPTION include:
--built-shared says 'yes' if libcurl was built shared
--ca ca bundle install path
--cc compiler
--cflags pre-processor and compiler flags
--checkfor [version] check for (lib)curl of the specified version
--configure the arguments given to configure when building curl
--features newline separated list of enabled features
--help display this help and exit
--libs library linking information
--prefix curl install prefix
--protocols newline separated list of enabled protocols
--ssl-backends output the SSL backends libcurl was built to support
--static-libs static libcurl library linking information
--version output version information
--vernum output the version information as a number (hexadecimal)
EOF
exit $1
}
if test $# -eq 0; then
usage 1
fi
while test $# -gt 0; do
case "$1" in
# this deals with options in the style
# --option=value and extracts the value part
# [not currently used]
-*=*) value=`echo "$1" | sed 's/[-_a-zA-Z0-9]*=//'` ;;
*) value= ;;
esac
case "$1" in
--built-shared)
echo @ENABLE_SHARED@
;;
--ca)
echo @CURL_CA_BUNDLE@
;;
--cc)
echo "@CC@"
;;
--prefix)
echo "$prefix"
;;
--feature|--features)
for feature in @SUPPORT_FEATURES@ ""; do
test -n "$feature" && echo "$feature"
done
;;
--protocols)
for protocol in @SUPPORT_PROTOCOLS@; do
echo "$protocol"
done
;;
--version)
echo libcurl @CURLVERSION@
exit 0
;;
--checkfor)
checkfor=$2
cmajor=`echo $checkfor | cut -d. -f1`
cminor=`echo $checkfor | cut -d. -f2`
# when extracting the patch part we strip off everything after a
# dash as that's used for things like version 1.2.3-CVS
cpatch=`echo $checkfor | cut -d. -f3 | cut -d- -f1`
vmajor=`echo @CURLVERSION@ | cut -d. -f1`
vminor=`echo @CURLVERSION@ | cut -d. -f2`
# when extracting the patch part we strip off everything after a
# dash as that's used for things like version 1.2.3-CVS
vpatch=`echo @CURLVERSION@ | cut -d. -f3 | cut -d- -f1`
if test "$vmajor" -gt "$cmajor"; then
exit 0;
fi
if test "$vmajor" -eq "$cmajor"; then
if test "$vminor" -gt "$cminor"; then
exit 0
fi
if test "$vminor" -eq "$cminor"; then
if test "$cpatch" -le "$vpatch"; then
exit 0
fi
fi
fi
echo "requested version $checkfor is newer than existing @CURLVERSION@"
exit 1
;;
--vernum)
echo @VERSIONNUM@
exit 0
;;
--help)
usage 0
;;
--cflags)
if test "X$cppflag_curl_staticlib" = "X-DCURL_STATICLIB"; then
CPPFLAG_CURL_STATICLIB="-DCURL_STATICLIB "
else
CPPFLAG_CURL_STATICLIB=""
fi
if test "X@includedir@" = "X/usr/include"; then
echo "$CPPFLAG_CURL_STATICLIB"
else
echo "${CPPFLAG_CURL_STATICLIB}-I@includedir@"
fi
;;
--libs)
if test "X@libdir@" != "X/usr/lib" -a "X@libdir@" != "X/usr/lib64"; then
CURLLIBDIR="-L@libdir@ "
else
CURLLIBDIR=""
fi
if test "X@ENABLE_SHARED@" = "Xno"; then
echo ${CURLLIBDIR}-lcurl @LIBCURL_LIBS@
else
echo ${CURLLIBDIR}-lcurl
fi
;;
--ssl-backends)
echo "@SSL_BACKENDS@"
;;
--static-libs)
if test "X@ENABLE_STATIC@" != "Xno" ; then
echo "@libdir@/libcurl.@libext@" @LDFLAGS@ @LIBCURL_LIBS@
else
echo "curl was built with static libraries disabled" >&2
exit 1
fi
;;
--configure)
echo @CONFIGURE_OPTIONS@
;;
*)
echo "unknown option: $1"
usage 1
;;
esac
shift
done
exit 0

@ -1,791 +0,0 @@
#! /bin/sh
# depcomp - compile a program generating dependencies as side-effects
scriptversion=2018-03-07.03; # UTC
# Copyright (C) 1999-2021 Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
# As a special exception to the GNU General Public License, if you
# distribute this file as part of a program that contains a
# configuration script generated by Autoconf, you may include it under
# the same distribution terms that you use for the rest of that program.
# Originally written by Alexandre Oliva <oliva@dcc.unicamp.br>.
case $1 in
'')
echo "$0: No command. Try '$0 --help' for more information." 1>&2
exit 1;
;;
-h | --h*)
cat <<\EOF
Usage: depcomp [--help] [--version] PROGRAM [ARGS]
Run PROGRAMS ARGS to compile a file, generating dependencies
as side-effects.
Environment variables:
depmode Dependency tracking mode.
source Source file read by 'PROGRAMS ARGS'.
object Object file output by 'PROGRAMS ARGS'.
DEPDIR directory where to store dependencies.
depfile Dependency file to output.
tmpdepfile Temporary file to use when outputting dependencies.
libtool Whether libtool is used (yes/no).
Report bugs to <bug-automake@gnu.org>.
EOF
exit $?
;;
-v | --v*)
echo "depcomp $scriptversion"
exit $?
;;
esac
# Get the directory component of the given path, and save it in the
# global variables '$dir'. Note that this directory component will
# be either empty or ending with a '/' character. This is deliberate.
set_dir_from ()
{
case $1 in
*/*) dir=`echo "$1" | sed -e 's|/[^/]*$|/|'`;;
*) dir=;;
esac
}
# Get the suffix-stripped basename of the given path, and save it the
# global variable '$base'.
set_base_from ()
{
base=`echo "$1" | sed -e 's|^.*/||' -e 's/\.[^.]*$//'`
}
# If no dependency file was actually created by the compiler invocation,
# we still have to create a dummy depfile, to avoid errors with the
# Makefile "include basename.Plo" scheme.
make_dummy_depfile ()
{
echo "#dummy" > "$depfile"
}
# Factor out some common post-processing of the generated depfile.
# Requires the auxiliary global variable '$tmpdepfile' to be set.
aix_post_process_depfile ()
{
# If the compiler actually managed to produce a dependency file,
# post-process it.
if test -f "$tmpdepfile"; then
# Each line is of the form 'foo.o: dependency.h'.
# Do two passes, one to just change these to
# $object: dependency.h
# and one to simply output
# dependency.h:
# which is needed to avoid the deleted-header problem.
{ sed -e "s,^.*\.[$lower]*:,$object:," < "$tmpdepfile"
sed -e "s,^.*\.[$lower]*:[$tab ]*,," -e 's,$,:,' < "$tmpdepfile"
} > "$depfile"
rm -f "$tmpdepfile"
else
make_dummy_depfile
fi
}
# A tabulation character.
tab=' '
# A newline character.
nl='
'
# Character ranges might be problematic outside the C locale.
# These definitions help.
upper=ABCDEFGHIJKLMNOPQRSTUVWXYZ
lower=abcdefghijklmnopqrstuvwxyz
digits=0123456789
alpha=${upper}${lower}
if test -z "$depmode" || test -z "$source" || test -z "$object"; then
echo "depcomp: Variables source, object and depmode must be set" 1>&2
exit 1
fi
# Dependencies for sub/bar.o or sub/bar.obj go into sub/.deps/bar.Po.
depfile=${depfile-`echo "$object" |
sed 's|[^\\/]*$|'${DEPDIR-.deps}'/&|;s|\.\([^.]*\)$|.P\1|;s|Pobj$|Po|'`}
tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
rm -f "$tmpdepfile"
# Avoid interferences from the environment.
gccflag= dashmflag=
# Some modes work just like other modes, but use different flags. We
# parameterize here, but still list the modes in the big case below,
# to make depend.m4 easier to write. Note that we *cannot* use a case
# here, because this file can only contain one case statement.
if test "$depmode" = hp; then
# HP compiler uses -M and no extra arg.
gccflag=-M
depmode=gcc
fi
if test "$depmode" = dashXmstdout; then
# This is just like dashmstdout with a different argument.
dashmflag=-xM
depmode=dashmstdout
fi
cygpath_u="cygpath -u -f -"
if test "$depmode" = msvcmsys; then
# This is just like msvisualcpp but w/o cygpath translation.
# Just convert the backslash-escaped backslashes to single forward
# slashes to satisfy depend.m4
cygpath_u='sed s,\\\\,/,g'
depmode=msvisualcpp
fi
if test "$depmode" = msvc7msys; then
# This is just like msvc7 but w/o cygpath translation.
# Just convert the backslash-escaped backslashes to single forward
# slashes to satisfy depend.m4
cygpath_u='sed s,\\\\,/,g'
depmode=msvc7
fi
if test "$depmode" = xlc; then
# IBM C/C++ Compilers xlc/xlC can output gcc-like dependency information.
gccflag=-qmakedep=gcc,-MF
depmode=gcc
fi
case "$depmode" in
gcc3)
## gcc 3 implements dependency tracking that does exactly what
## we want. Yay! Note: for some reason libtool 1.4 doesn't like
## it if -MD -MP comes after the -MF stuff. Hmm.
## Unfortunately, FreeBSD c89 acceptance of flags depends upon
## the command line argument order; so add the flags where they
## appear in depend2.am. Note that the slowdown incurred here
## affects only configure: in makefiles, %FASTDEP% shortcuts this.
for arg
do
case $arg in
-c) set fnord "$@" -MT "$object" -MD -MP -MF "$tmpdepfile" "$arg" ;;
*) set fnord "$@" "$arg" ;;
esac
shift # fnord
shift # $arg
done
"$@"
stat=$?
if test $stat -ne 0; then
rm -f "$tmpdepfile"
exit $stat
fi
mv "$tmpdepfile" "$depfile"
;;
gcc)
## Note that this doesn't just cater to obsosete pre-3.x GCC compilers.
## but also to in-use compilers like IMB xlc/xlC and the HP C compiler.
## (see the conditional assignment to $gccflag above).
## There are various ways to get dependency output from gcc. Here's
## why we pick this rather obscure method:
## - Don't want to use -MD because we'd like the dependencies to end
## up in a subdir. Having to rename by hand is ugly.
## (We might end up doing this anyway to support other compilers.)
## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
## -MM, not -M (despite what the docs say). Also, it might not be
## supported by the other compilers which use the 'gcc' depmode.
## - Using -M directly means running the compiler twice (even worse
## than renaming).
if test -z "$gccflag"; then
gccflag=-MD,
fi
"$@" -Wp,"$gccflag$tmpdepfile"
stat=$?
if test $stat -ne 0; then
rm -f "$tmpdepfile"
exit $stat
fi
rm -f "$depfile"
echo "$object : \\" > "$depfile"
# The second -e expression handles DOS-style file names with drive
# letters.
sed -e 's/^[^:]*: / /' \
-e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
## This next piece of magic avoids the "deleted header file" problem.
## The problem is that when a header file which appears in a .P file
## is deleted, the dependency causes make to die (because there is
## typically no way to rebuild the header). We avoid this by adding
## dummy dependencies for each header file. Too bad gcc doesn't do
## this for us directly.
## Some versions of gcc put a space before the ':'. On the theory
## that the space means something, we add a space to the output as
## well. hp depmode also adds that space, but also prefixes the VPATH
## to the object. Take care to not repeat it in the output.
## Some versions of the HPUX 10.20 sed can't process this invocation
## correctly. Breaking it into two sed invocations is a workaround.
tr ' ' "$nl" < "$tmpdepfile" \
| sed -e 's/^\\$//' -e '/^$/d' -e "s|.*$object$||" -e '/:$/d' \
| sed -e 's/$/ :/' >> "$depfile"
rm -f "$tmpdepfile"
;;
hp)
# This case exists only to let depend.m4 do its work. It works by
# looking at the text of this script. This case will never be run,
# since it is checked for above.
exit 1
;;
sgi)
if test "$libtool" = yes; then
"$@" "-Wp,-MDupdate,$tmpdepfile"
else
"$@" -MDupdate "$tmpdepfile"
fi
stat=$?
if test $stat -ne 0; then
rm -f "$tmpdepfile"
exit $stat
fi
rm -f "$depfile"
if test -f "$tmpdepfile"; then # yes, the sourcefile depend on other files
echo "$object : \\" > "$depfile"
# Clip off the initial element (the dependent). Don't try to be
# clever and replace this with sed code, as IRIX sed won't handle
# lines with more than a fixed number of characters (4096 in
# IRIX 6.2 sed, 8192 in IRIX 6.5). We also remove comment lines;
# the IRIX cc adds comments like '#:fec' to the end of the
# dependency line.
tr ' ' "$nl" < "$tmpdepfile" \
| sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' \
| tr "$nl" ' ' >> "$depfile"
echo >> "$depfile"
# The second pass generates a dummy entry for each header file.
tr ' ' "$nl" < "$tmpdepfile" \
| sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
>> "$depfile"
else
make_dummy_depfile
fi
rm -f "$tmpdepfile"
;;
xlc)
# This case exists only to let depend.m4 do its work. It works by
# looking at the text of this script. This case will never be run,
# since it is checked for above.
exit 1
;;
aix)
# The C for AIX Compiler uses -M and outputs the dependencies
# in a .u file. In older versions, this file always lives in the
# current directory. Also, the AIX compiler puts '$object:' at the
# start of each line; $object doesn't have directory information.
# Version 6 uses the directory in both cases.
set_dir_from "$object"
set_base_from "$object"
if test "$libtool" = yes; then
tmpdepfile1=$dir$base.u
tmpdepfile2=$base.u
tmpdepfile3=$dir.libs/$base.u
"$@" -Wc,-M
else
tmpdepfile1=$dir$base.u
tmpdepfile2=$dir$base.u
tmpdepfile3=$dir$base.u
"$@" -M
fi
stat=$?
if test $stat -ne 0; then
rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
exit $stat
fi
for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
do
test -f "$tmpdepfile" && break
done
aix_post_process_depfile
;;
tcc)
# tcc (Tiny C Compiler) understand '-MD -MF file' since version 0.9.26
# FIXME: That version still under development at the moment of writing.
# Make that this statement remains true also for stable, released
# versions.
# It will wrap lines (doesn't matter whether long or short) with a
# trailing '\', as in:
#
# foo.o : \
# foo.c \
# foo.h \
#
# It will put a trailing '\' even on the last line, and will use leading
# spaces rather than leading tabs (at least since its commit 0394caf7
# "Emit spaces for -MD").
"$@" -MD -MF "$tmpdepfile"
stat=$?
if test $stat -ne 0; then
rm -f "$tmpdepfile"
exit $stat
fi
rm -f "$depfile"
# Each non-empty line is of the form 'foo.o : \' or ' dep.h \'.
# We have to change lines of the first kind to '$object: \'.
sed -e "s|.*:|$object :|" < "$tmpdepfile" > "$depfile"
# And for each line of the second kind, we have to emit a 'dep.h:'
# dummy dependency, to avoid the deleted-header problem.
sed -n -e 's|^ *\(.*\) *\\$|\1:|p' < "$tmpdepfile" >> "$depfile"
rm -f "$tmpdepfile"
;;
## The order of this option in the case statement is important, since the
## shell code in configure will try each of these formats in the order
## listed in this file. A plain '-MD' option would be understood by many
## compilers, so we must ensure this comes after the gcc and icc options.
pgcc)
# Portland's C compiler understands '-MD'.
# Will always output deps to 'file.d' where file is the root name of the
# source file under compilation, even if file resides in a subdirectory.
# The object file name does not affect the name of the '.d' file.
# pgcc 10.2 will output
# foo.o: sub/foo.c sub/foo.h
# and will wrap long lines using '\' :
# foo.o: sub/foo.c ... \
# sub/foo.h ... \
# ...
set_dir_from "$object"
# Use the source, not the object, to determine the base name, since
# that's sadly what pgcc will do too.
set_base_from "$source"
tmpdepfile=$base.d
# For projects that build the same source file twice into different object
# files, the pgcc approach of using the *source* file root name can cause
# problems in parallel builds. Use a locking strategy to avoid stomping on
# the same $tmpdepfile.
lockdir=$base.d-lock
trap "
echo '$0: caught signal, cleaning up...' >&2
rmdir '$lockdir'
exit 1
" 1 2 13 15
numtries=100
i=$numtries
while test $i -gt 0; do
# mkdir is a portable test-and-set.
if mkdir "$lockdir" 2>/dev/null; then
# This process acquired the lock.
"$@" -MD
stat=$?
# Release the lock.
rmdir "$lockdir"
break
else
# If the lock is being held by a different process, wait
# until the winning process is done or we timeout.
while test -d "$lockdir" && test $i -gt 0; do
sleep 1
i=`expr $i - 1`
done
fi
i=`expr $i - 1`
done
trap - 1 2 13 15
if test $i -le 0; then
echo "$0: failed to acquire lock after $numtries attempts" >&2
echo "$0: check lockdir '$lockdir'" >&2
exit 1
fi
if test $stat -ne 0; then
rm -f "$tmpdepfile"
exit $stat
fi
rm -f "$depfile"
# Each line is of the form `foo.o: dependent.h',
# or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
# Do two passes, one to just change these to
# `$object: dependent.h' and one to simply `dependent.h:'.
sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
# Some versions of the HPUX 10.20 sed can't process this invocation
# correctly. Breaking it into two sed invocations is a workaround.
sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" \
| sed -e 's/$/ :/' >> "$depfile"
rm -f "$tmpdepfile"
;;
hp2)
# The "hp" stanza above does not work with aCC (C++) and HP's ia64
# compilers, which have integrated preprocessors. The correct option
# to use with these is +Maked; it writes dependencies to a file named
# 'foo.d', which lands next to the object file, wherever that
# happens to be.
# Much of this is similar to the tru64 case; see comments there.
set_dir_from "$object"
set_base_from "$object"
if test "$libtool" = yes; then
tmpdepfile1=$dir$base.d
tmpdepfile2=$dir.libs/$base.d
"$@" -Wc,+Maked
else
tmpdepfile1=$dir$base.d
tmpdepfile2=$dir$base.d
"$@" +Maked
fi
stat=$?
if test $stat -ne 0; then
rm -f "$tmpdepfile1" "$tmpdepfile2"
exit $stat
fi
for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2"
do
test -f "$tmpdepfile" && break
done
if test -f "$tmpdepfile"; then
sed -e "s,^.*\.[$lower]*:,$object:," "$tmpdepfile" > "$depfile"
# Add 'dependent.h:' lines.
sed -ne '2,${
s/^ *//
s/ \\*$//
s/$/:/
p
}' "$tmpdepfile" >> "$depfile"
else
make_dummy_depfile
fi
rm -f "$tmpdepfile" "$tmpdepfile2"
;;
tru64)
# The Tru64 compiler uses -MD to generate dependencies as a side
# effect. 'cc -MD -o foo.o ...' puts the dependencies into 'foo.o.d'.
# At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
# dependencies in 'foo.d' instead, so we check for that too.
# Subdirectories are respected.
set_dir_from "$object"
set_base_from "$object"
if test "$libtool" = yes; then
# Libtool generates 2 separate objects for the 2 libraries. These
# two compilations output dependencies in $dir.libs/$base.o.d and
# in $dir$base.o.d. We have to check for both files, because
# one of the two compilations can be disabled. We should prefer
# $dir$base.o.d over $dir.libs/$base.o.d because the latter is
# automatically cleaned when .libs/ is deleted, while ignoring
# the former would cause a distcleancheck panic.
tmpdepfile1=$dir$base.o.d # libtool 1.5
tmpdepfile2=$dir.libs/$base.o.d # Likewise.
tmpdepfile3=$dir.libs/$base.d # Compaq CCC V6.2-504
"$@" -Wc,-MD
else
tmpdepfile1=$dir$base.d
tmpdepfile2=$dir$base.d
tmpdepfile3=$dir$base.d
"$@" -MD
fi
stat=$?
if test $stat -ne 0; then
rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
exit $stat
fi
for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
do
test -f "$tmpdepfile" && break
done
# Same post-processing that is required for AIX mode.
aix_post_process_depfile
;;
msvc7)
if test "$libtool" = yes; then
showIncludes=-Wc,-showIncludes
else
showIncludes=-showIncludes
fi
"$@" $showIncludes > "$tmpdepfile"
stat=$?
grep -v '^Note: including file: ' "$tmpdepfile"
if test $stat -ne 0; then
rm -f "$tmpdepfile"
exit $stat
fi
rm -f "$depfile"
echo "$object : \\" > "$depfile"
# The first sed program below extracts the file names and escapes
# backslashes for cygpath. The second sed program outputs the file
# name when reading, but also accumulates all include files in the
# hold buffer in order to output them again at the end. This only
# works with sed implementations that can handle large buffers.
sed < "$tmpdepfile" -n '
/^Note: including file: *\(.*\)/ {
s//\1/
s/\\/\\\\/g
p
}' | $cygpath_u | sort -u | sed -n '
s/ /\\ /g
s/\(.*\)/'"$tab"'\1 \\/p
s/.\(.*\) \\/\1:/
H
$ {
s/.*/'"$tab"'/
G
p
}' >> "$depfile"
echo >> "$depfile" # make sure the fragment doesn't end with a backslash
rm -f "$tmpdepfile"
;;
msvc7msys)
# This case exists only to let depend.m4 do its work. It works by
# looking at the text of this script. This case will never be run,
# since it is checked for above.
exit 1
;;
#nosideeffect)
# This comment above is used by automake to tell side-effect
# dependency tracking mechanisms from slower ones.
dashmstdout)
# Important note: in order to support this mode, a compiler *must*
# always write the preprocessed file to stdout, regardless of -o.
"$@" || exit $?
# Remove the call to Libtool.
if test "$libtool" = yes; then
while test "X$1" != 'X--mode=compile'; do
shift
done
shift
fi
# Remove '-o $object'.
IFS=" "
for arg
do
case $arg in
-o)
shift
;;
$object)
shift
;;
*)
set fnord "$@" "$arg"
shift # fnord
shift # $arg
;;
esac
done
test -z "$dashmflag" && dashmflag=-M
# Require at least two characters before searching for ':'
# in the target name. This is to cope with DOS-style filenames:
# a dependency such as 'c:/foo/bar' could be seen as target 'c' otherwise.
"$@" $dashmflag |
sed "s|^[$tab ]*[^:$tab ][^:][^:]*:[$tab ]*|$object: |" > "$tmpdepfile"
rm -f "$depfile"
cat < "$tmpdepfile" > "$depfile"
# Some versions of the HPUX 10.20 sed can't process this sed invocation
# correctly. Breaking it into two sed invocations is a workaround.
tr ' ' "$nl" < "$tmpdepfile" \
| sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \
| sed -e 's/$/ :/' >> "$depfile"
rm -f "$tmpdepfile"
;;
dashXmstdout)
# This case only exists to satisfy depend.m4. It is never actually
# run, as this mode is specially recognized in the preamble.
exit 1
;;
makedepend)
"$@" || exit $?
# Remove any Libtool call
if test "$libtool" = yes; then
while test "X$1" != 'X--mode=compile'; do
shift
done
shift
fi
# X makedepend
shift
cleared=no eat=no
for arg
do
case $cleared in
no)
set ""; shift
cleared=yes ;;
esac
if test $eat = yes; then
eat=no
continue
fi
case "$arg" in
-D*|-I*)
set fnord "$@" "$arg"; shift ;;
# Strip any option that makedepend may not understand. Remove
# the object too, otherwise makedepend will parse it as a source file.
-arch)
eat=yes ;;
-*|$object)
;;
*)
set fnord "$@" "$arg"; shift ;;
esac
done
obj_suffix=`echo "$object" | sed 's/^.*\././'`
touch "$tmpdepfile"
${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
rm -f "$depfile"
# makedepend may prepend the VPATH from the source file name to the object.
# No need to regex-escape $object, excess matching of '.' is harmless.
sed "s|^.*\($object *:\)|\1|" "$tmpdepfile" > "$depfile"
# Some versions of the HPUX 10.20 sed can't process the last invocation
# correctly. Breaking it into two sed invocations is a workaround.
sed '1,2d' "$tmpdepfile" \
| tr ' ' "$nl" \
| sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \
| sed -e 's/$/ :/' >> "$depfile"
rm -f "$tmpdepfile" "$tmpdepfile".bak
;;
cpp)
# Important note: in order to support this mode, a compiler *must*
# always write the preprocessed file to stdout.
"$@" || exit $?
# Remove the call to Libtool.
if test "$libtool" = yes; then
while test "X$1" != 'X--mode=compile'; do
shift
done
shift
fi
# Remove '-o $object'.
IFS=" "
for arg
do
case $arg in
-o)
shift
;;
$object)
shift
;;
*)
set fnord "$@" "$arg"
shift # fnord
shift # $arg
;;
esac
done
"$@" -E \
| sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
-e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
| sed '$ s: \\$::' > "$tmpdepfile"
rm -f "$depfile"
echo "$object : \\" > "$depfile"
cat < "$tmpdepfile" >> "$depfile"
sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
rm -f "$tmpdepfile"
;;
msvisualcpp)
# Important note: in order to support this mode, a compiler *must*
# always write the preprocessed file to stdout.
"$@" || exit $?
# Remove the call to Libtool.
if test "$libtool" = yes; then
while test "X$1" != 'X--mode=compile'; do
shift
done
shift
fi
IFS=" "
for arg
do
case "$arg" in
-o)
shift
;;
$object)
shift
;;
"-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
set fnord "$@"
shift
shift
;;
*)
set fnord "$@" "$arg"
shift
shift
;;
esac
done
"$@" -E 2>/dev/null |
sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile"
rm -f "$depfile"
echo "$object : \\" > "$depfile"
sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::'"$tab"'\1 \\:p' >> "$depfile"
echo "$tab" >> "$depfile"
sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile"
rm -f "$tmpdepfile"
;;
msvcmsys)
# This case exists only to let depend.m4 do its work. It works by
# looking at the text of this script. This case will never be run,
# since it is checked for above.
exit 1
;;
none)
exec "$@"
;;
*)
echo "Unknown depmode $depmode" 1>&2
exit 1
;;
esac
exit 0
# Local Variables:
# mode: shell-script
# sh-indentation: 2
# eval: (add-hook 'before-save-hook 'time-stamp)
# time-stamp-start: "scriptversion="
# time-stamp-format: "%:y-%02m-%02d.%02H"
# time-stamp-time-zone: "UTC0"
# time-stamp-end: "; # UTC"
# End:

@ -1,41 +0,0 @@
# Alt-Svc
curl features support for the Alt-Svc: HTTP header.
## Enable Alt-Svc in build
`./configure --enable-alt-svc`
(enabled by default since 7.73.0)
## Standard
[RFC 7838](https://datatracker.ietf.org/doc/html/rfc7838)
# Alt-Svc cache file format
This is a text based file with one line per entry and each line consists of nine
space separated fields.
## Example
h2 quic.tech 8443 h3-22 quic.tech 8443 "20190808 06:18:37" 0 0
## Fields
1. The ALPN id for the source origin
2. The host name for the source origin
3. The port number for the source origin
4. The ALPN id for the destination host
5. The host name for the destination host
6. The host number for the destination host
7. The expiration date and time of this entry within double quotes. The date format is "YYYYMMDD HH:MM:SS" and the time zone is GMT.
8. Boolean (1 or 0) if "persist" was set for this entry
9. Integer priority value (not currently used)
# TODO
- handle multiple response headers, when one of them says `clear` (should
override them all)
- using `Age:` value for caching age as per spec
- `CURLALTSVC_IMMEDIATELY` support

@ -1,136 +0,0 @@
libcurl bindings
================
Creative people have written bindings or interfaces for various environments
and programming languages. Using one of these allows you to take advantage of
curl powers from within your favourite language or system.
This is a list of all known interfaces as of this writing.
The bindings listed below are not part of the curl/libcurl distribution
archives, but must be downloaded and installed separately.
<!-- markdown-link-check-disable -->
[Ada95](https://web.archive.org/web/20070403105909/www.almroth.com/adacurl/index.html) Written by Andreas Almroth
[Basic](https://scriptbasic.com/) ScriptBasic bindings written by Peter Verhas
C++: [curlpp](https://github.com/jpbarrette/curlpp/) Written by Jean-Philippe Barrette-LaPierre,
[curlcpp](https://github.com/JosephP91/curlcpp) by Giuseppe Persico and [C++
Requests](https://github.com/libcpr/cpr) by Huu Nguyen
[Ch](https://chcurl.sourceforge.net/) Written by Stephen Nestinger and Jonathan Rogado
Cocoa: [BBHTTP](https://github.com/biasedbit/BBHTTP) written by Bruno de Carvalho
[curlhandle](https://github.com/karelia/curlhandle) Written by Dan Wood
Clojure: [clj-curl](https://github.com/lsevero/clj-curl) by Lucas Severo
[D](https://dlang.org/library/std/net/curl.html) Written by Kenneth Bogert
[Delphi](https://github.com/Mercury13/curl4delphi) Written by Mikhail Merkuryev
[Dylan](https://dylanlibs.sourceforge.net/) Written by Chris Double
[Eiffel](https://iron.eiffel.com/repository/20.11/package/ABEF6975-37AC-45FD-9C67-52D10BA0669B) Written by Eiffel Software
[Euphoria](https://web.archive.org/web/20050204080544/rays-web.com/eulibcurl.htm) Written by Ray Smith
[Falcon](http://www.falconpl.org/project_docs/curl/)
[Ferite](https://web.archive.org/web/20150102192018/ferite.org/) Written by Paul Querna
[Fortran](https://github.com/interkosmos/fortran-curl) Written by Philipp Engel
[Gambas](https://gambas.sourceforge.net/)
[glib/GTK+](https://web.archive.org/web/20100526203452/atterer.net/glibcurl) Written by Richard Atterer
Go: [go-curl](https://github.com/andelf/go-curl) by ShuYu Wang
[Guile](https://github.com/spk121/guile-curl) Written by Michael L. Gran
[Harbour](https://github.com/vszakats/hb/tree/main/contrib/hbcurl) Written by Viktor Szakats
[Haskell](https://hackage.haskell.org/package/curl) Written by Galois, Inc
[Hollywood](https://www.hollywood-mal.com/download.html) hURL by Andreas Falkenhahn
[Java](https://github.com/pjlegato/curl-java)
[Julia](https://github.com/JuliaWeb/LibCURL.jl) Written by Amit Murthy
[Kapito](https://github.com/puzza007/katipo) is an Erlang HTTP library around libcurl.
[Lisp](https://common-lisp.net/project/cl-curl/) Written by Liam Healy
Lua: [luacurl](https://web.archive.org/web/20201205052437/luacurl.luaforge.net/) by Alexander Marinov, [Lua-cURL](https://github.com/Lua-cURL) by Jürgen Hötzel
[Mono](https://web.archive.org/web/20070606064500/https://forge.novell.com/modules/xfmod/project/?libcurl-mono) Written by Jeffrey Phillips
[.NET](https://sourceforge.net/projects/libcurl-net/) libcurl-net by Jeffrey Phillips
[Nim](https://nimble.directory/pkg/libcurl) wrapper for libcurl
[node.js](https://github.com/JCMais/node-libcurl) node-libcurl by Jonathan Cardoso Machado
[Object-Pascal](https://web.archive.org/web/20020610214926/www.tekool.com/opcurl) Free Pascal, Delphi and Kylix binding written by Christophe Espern.
[OCaml](https://opam.ocaml.org/packages/ocurl/) Written by Lars Nilsson and ygrek
[Pascal](https://web.archive.org/web/20030804091414/houston.quik.com/jkp/curlpas/) Free Pascal, Delphi and Kylix binding written by Jeffrey Pohlmeyer.
Perl: [WWW::Curl](https://github.com/szbalint/WWW--Curl) Maintained by Cris
Bailiff and Bálint Szilakszi,
[perl6-net-curl](https://github.com/azawawi/perl6-net-curl) by Ahmad M. Zawawi
[NET::Curl](https://metacpan.org/pod/Net::Curl) by Przemyslaw Iskra
[PHP](https://php.net/curl) Originally written by Sterling Hughes
[PostgreSQL](https://github.com/pramsey/pgsql-http) - HTTP client for PostgreSQL
[PostgreSQL](https://github.com/RekGRpth/pg_curl) - cURL client for PostgreSQL
[PureBasic](https://www.purebasic.com/documentation/http/index.html) uses libcurl in its "native" HTTP subsystem
[Python](http://pycurl.io/) PycURL by Kjetil Jacobsen
[Q](https://q-lang.sourceforge.net/) The libcurl module is part of the default install
[R](https://cran.r-project.org/package=curl)
[Rexx](https://rexxcurl.sourceforge.net/) Written Mark Hessling
[Ring](https://ring-lang.sourceforge.io/doc1.3/libcurl.html) RingLibCurl by Mahmoud Fayed
RPG, support for ILE/RPG on OS/400 is included in source distribution
Ruby: [curb](https://github.com/taf2/curb) written by Ross Bamford,
[ruby-curl-multi](https://github.com/kball/curl_multi.rb) by Kristjan Petursson and Keith Rarick
[Rust](https://github.com/alexcrichton/curl-rust) curl-rust - by Carl Lerche
[Scheme](http://www.metapaper.net/lisovsky/web/curl/) Bigloo binding by Kirill Lisovsky
[Scilab](https://help.scilab.org/docs/current/fr_FR/getURL.html) binding by Sylvestre Ledru
[S-Lang](https://www.jedsoft.org/slang/modules/curl.html) by John E Davis
[Smalltalk](https://www.squeaksource.com/CurlPlugin/) Written by Danil Osipchuk
[SP-Forth](https://sourceforge.net/p/spf/spf/ci/master/tree/devel/~ac/lib/lin/curl/) Written by Andrey Cherezov
[SPL](https://web.archive.org/web/20210203022158/www.clifford.at/spl/spldoc/curl.html) Written by Clifford Wolf
[Tcl](https://web.archive.org/web/20160826011806/mirror.yellow5.com/tclcurl/) Tclcurl by Andrés García
[Visual Basic](https://sourceforge.net/projects/libcurl-vb/) libcurl-vb by Jeffrey Phillips
[Visual Foxpro](https://web.archive.org/web/20130730181523/www.ctl32.com.ar/libcurl.asp) by Carlos Alloatti
[wxWidgets](https://wxcode.sourceforge.net/components/wxcurl/) Written by Casey O'Donnell
[XBLite](https://web.archive.org/web/20060426150418/perso.wanadoo.fr/xblite/libraries.html) Written by David Szafranski
[Xojo](https://github.com/charonn0/RB-libcURL) Written by Andrew Lambert

@ -1,81 +0,0 @@
# bufref
This is an internal module for handling buffer references. A referenced
buffer is associated with its destructor function that is implicitly called
when the reference is invalidated. Once referenced, a buffer cannot be
reallocated.
A data length is stored within the reference for binary data handling
purposes; it is not used by the bufref API.
The `struct bufref` is used to hold data referencing a buffer. The members of
that structure **MUST NOT** be accessed or modified without using the dedicated
bufref API.
## `init`
```c
void Curl_bufref_init(struct bufref *br);
```
Initializes a `bufref` structure. This function **MUST** be called before any
other operation is performed on the structure.
Upon completion, the referenced buffer is `NULL` and length is zero.
This function may also be called to bypass referenced buffer destruction while
invalidating the current reference.
## `free`
```c
void Curl_bufref_free(struct bufref *br);
```
Destroys the previously referenced buffer using its destructor and
reinitializes the structure for a possible subsequent reuse.
## `set`
```c
void Curl_bufref_set(struct bufref *br, const void *buffer, size_t length,
void (*destructor)(void *));
```
Releases the previously referenced buffer, then assigns the new `buffer` to
the structure, associated with its `destructor` function. The latter can be
specified as `NULL`: this will be the case when the referenced buffer is
static.
if `buffer` is NULL, `length` must be zero.
## `memdup`
```c
CURLcode Curl_bufref_memdup(struct bufref *br, const void *data, size_t length);
```
Releases the previously referenced buffer, then duplicates the `length`-byte
`data` into a buffer allocated via `malloc()` and references the latter
associated with destructor `curl_free()`.
An additional trailing byte is allocated and set to zero as a possible string
null-terminator; it is not counted in the stored length.
Returns `CURLE_OK` if successful, else `CURLE_OUT_OF_MEMORY`.
## `ptr`
```c
const unsigned char *Curl_bufref_ptr(const struct bufref *br);
```
Returns a `const unsigned char *` to the referenced buffer.
## `len`
```c
size_t Curl_bufref_len(const struct bufref *br);
```
Returns the stored length of the referenced buffer.

@ -1,78 +0,0 @@
# The curl bug bounty
The curl project runs a bug bounty program in association with
[HackerOne](https://www.hackerone.com) and the [Internet Bug
Bounty](https://internetbugbounty.org).
## How does it work?
Start out by posting your suspected security vulnerability directly to [curl's
HackerOne program](https://hackerone.com/curl).
After you have reported a security issue, it has been deemed credible, and a
patch and advisory has been made public, you may be eligible for a bounty from
this program. See the [SECURITY-PROCESS](SECURITY-PROCESS.md) document for how
we work with security issues.
## What are the reward amounts?
The curl project offers monetary compensation for reported and published
security vulnerabilities. The amount of money that is rewarded depends on how
serious the flaw is determined to be.
Since 2021, the Bug Bounty is managed in association with the Internet Bug
Bounty and they will set the reward amounts. If it would turn out that they
set amounts that are way lower than we can accept, the curl project intends to
"top up" rewards.
In 2022, typical "Medium" rated vulnerabilities have been rewarded 2,400 USD
each.
## Who is eligible for a reward?
Everyone and anyone who reports a security problem in a released curl version
that has not already been reported can ask for a bounty.
Dedicated - paid for - security audits that are performed in collaboration
with curl developers are not eligible for bounties.
Vulnerabilities in features that are off by default and documented as
experimental are not eligible for a reward.
The vulnerability has to be fixed and publicly announced (by the curl project)
before a bug bounty will be considered.
Once the vulnerability has been published by curl, the researcher can request
their bounty from the [Internet Bug Bounty](https://hackerone.com/ibb).
Bounties need to be requested within twelve months from the publication of the
vulnerability.
## Product vulnerabilities only
This bug bounty only concerns the curl and libcurl products and thus their
respective source codes - when running on existing hardware. It does not
include curl documentation, curl websites, or other curl related
infrastructure.
The curl security team is the sole arbiter if a reported flaw is subject to a
bounty or not.
## How are vulnerabilities graded?
The grading of each reported vulnerability that makes a reward claim will be
performed by the curl security team. The grading will be based on the CVSS
(Common Vulnerability Scoring System) 3.0.
## How are reward amounts determined?
The curl security team gives the vulnerability a score or severity level, as
mentioned above. The actual monetary reward amount is decided and paid by the
Internet Bug Bounty..
## Regarding taxes, etc. on the bounties
In the event that the individual receiving a bug bounty needs to pay taxes on
the reward money, the responsibility lies with the receiver. The curl project
or its security team never actually receive any of this money, hold the money,
or pay out the money.

@ -1,265 +0,0 @@
# BUGS
## There are still bugs
Curl and libcurl keep being developed. Adding features and changing code
means that bugs will sneak in, no matter how hard we try to keep them out.
Of course there are lots of bugs left. And lots of misfeatures.
To help us make curl the stable and solid product we want it to be, we need
bug reports and bug fixes.
## Where to report
If you cannot fix a bug yourself and submit a fix for it, try to report an as
detailed report as possible to a curl mailing list to allow one of us to have
a go at a solution. You can optionally also submit your problem in [curl's
bug tracking system](https://github.com/curl/curl/issues).
Please read the rest of this document below first before doing that.
If you feel you need to ask around first, find a suitable [mailing list](
https://curl.se/mail/) and post your questions there.
## Security bugs
If you find a bug or problem in curl or libcurl that you think has a security
impact, for example a bug that can put users in danger or make them
vulnerable if the bug becomes public knowledge, then please report that bug
using our security development process.
Security related bugs or bugs that are suspected to have a security impact,
should be reported on the [curl security tracker at
HackerOne](https://hackerone.com/curl).
This ensures that the report reaches the curl security team so that they
first can deal with the report away from the public to minimize the harm
and impact it will have on existing users out there who might be using the
vulnerable versions.
The curl project's process for handling security related issues is
[documented separately](https://curl.se/dev/secprocess.html).
## What to report
When reporting a bug, you should include all information that will help us
understand what is wrong, what you expected to happen and how to repeat the
bad behavior. You therefore need to tell us:
- your operating system's name and version number
- what version of curl you are using (`curl -V` is fine)
- versions of the used libraries that libcurl is built to use
- what URL you were working with (if possible), at least which protocol
and anything and everything else you think matters. Tell us what you expected
to happen, tell use what did happen, tell us how you could make it work
another way. Dig around, try out, test. Then include all the tiny bits and
pieces in your report. You will benefit from this yourself, as it will enable
us to help you quicker and more accurately.
Since curl deals with networks, it often helps us if you include a protocol
debug dump with your bug report. The output you get by using the `-v` or
`--trace` options.
If curl crashed, causing a core dump (in Unix), there is hardly any use to
send that huge file to anyone of us. Unless we have the same system setup as
you, we cannot do much with it. Instead, we ask you to get a stack trace and
send that (much smaller) output to us instead.
The address and how to subscribe to the mailing lists are detailed in the
`MANUAL.md` file.
## libcurl problems
When you have written your own application with libcurl to perform transfers,
it is even more important to be specific and detailed when reporting bugs.
Tell us the libcurl version and your operating system. Tell us the name and
version of all relevant sub-components like for example the SSL library
you are using and what name resolving your libcurl uses. If you use SFTP or
SCP, the libssh2 version is relevant etc.
Showing us a real source code example repeating your problem is the best way
to get our attention and it will greatly increase our chances to understand
your problem and to work on a fix (if we agree it truly is a problem).
Lots of problems that appear to be libcurl problems are actually just abuses
of the libcurl API or other malfunctions in your applications. It is advised
that you run your problematic program using a memory debug tool like valgrind
or similar before you post memory-related or "crashing" problems to us.
## Who will fix the problems
If the problems or bugs you describe are considered to be bugs, we want to
have the problems fixed.
There are no developers in the curl project that are paid to work on bugs.
All developers that take on reported bugs do this on a voluntary basis. We do
it out of an ambition to keep curl and libcurl excellent products and out of
pride.
Please do not assume that you can just lump over something to us and it will
then magically be fixed after some given time. Most often we need feedback
and help to understand what you have experienced and how to repeat a
problem. Then we may only be able to assist YOU to debug the problem and to
track down the proper fix.
We get reports from many people every month and each report can take a
considerable amount of time to really go to the bottom with.
## How to get a stack trace
First, you must make sure that you compile all sources with `-g` and that you
do not 'strip' the final executable. Try to avoid optimizing the code as well,
remove `-O`, `-O2` etc from the compiler options.
Run the program until it cores.
Run your debugger on the core file, like `<debugger> curl
core`. `<debugger>` should be replaced with the name of your debugger, in
most cases that will be `gdb`, but `dbx` and others also occur.
When the debugger has finished loading the core file and presents you a
prompt, enter `where` (without quotes) and press return.
The list that is presented is the stack trace. If everything worked, it is
supposed to contain the chain of functions that were called when curl
crashed. Include the stack trace with your detailed bug report, it will help a
lot.
## Bugs in libcurl bindings
There will of course pop up bugs in libcurl bindings. You should then
primarily approach the team that works on that particular binding and see
what you can do to help them fix the problem.
If you suspect that the problem exists in the underlying libcurl, then please
convert your program over to plain C and follow the steps outlined above.
## Bugs in old versions
The curl project typically releases new versions every other month, and we
fix several hundred bugs per year. For a huge table of releases, number of
bug fixes and more, see: https://curl.se/docs/releases.html
The developers in the curl project do not have bandwidth or energy enough to
maintain several branches or to spend much time on hunting down problems in
old versions when chances are we already fixed them or at least that they have
changed nature and appearance in later versions.
When you experience a problem and want to report it, you really SHOULD
include the version number of the curl you are using when you experience the
issue. If that version number shows us that you are using an out-of-date curl,
you should also try out a modern curl version to see if the problem persists
or how/if it has changed in appearance.
Even if you cannot immediately upgrade your application/system to run the
latest curl version, you can most often at least run a test version or
experimental build or similar, to get this confirmed or not.
At times people insist that they cannot upgrade to a modern curl version, but
instead, they "just want the bug fixed". That is fine, just do not count on us
spending many cycles on trying to identify which single commit, if that is
even possible, that at some point in the past fixed the problem you are now
experiencing.
Security wise, it is almost always a bad idea to lag behind the current curl
versions by a lot. We keep discovering and reporting security problems
over time see you can see in [this
table](https://curl.se/docs/vulnerabilities.html)
# Bug fixing procedure
## What happens on first filing
When a new issue is posted in the issue tracker or on the mailing list, the
team of developers first needs to see the report. Maybe they took the day off,
maybe they are off in the woods hunting. Have patience. Allow at least a few
days before expecting someone to have responded.
In the issue tracker, you can expect that some labels will be set on the issue
to help categorize it.
## First response
If your issue/bug report was not perfect at once (and few are), chances are
that someone will ask follow-up questions. Which version did you use? Which
options did you use? How often does the problem occur? How can we reproduce
this problem? Which protocols does it involve? Or perhaps much more specific
and deep diving questions. It all depends on your specific issue.
You should then respond to these follow-up questions and provide more info
about the problem, so that we can help you figure it out. Or maybe you can
help us figure it out. An active back-and-forth communication is important
and the key for finding a cure and landing a fix.
## Not reproducible
We may require further work from you who actually see or experience the
problem if we cannot reproduce it and cannot understand it even after having
gotten all the info we need and having studied the source code over again.
## Unresponsive
If the problem have not been understood or reproduced, and there is nobody
responding to follow-up questions or questions asking for clarifications or
for discussing possible ways to move forward with the task, we take that as a
strong suggestion that the bug is unimportant.
Unimportant issues will be closed as inactive sooner or later as they cannot
be fixed. The inactivity period (waiting for responses) should not be shorter
than two weeks but may extend months.
## Lack of time/interest
Bugs that are filed and are understood can unfortunately end up in the
"nobody cares enough about it to work on it" category. Such bugs are
perfectly valid problems that *should* get fixed but apparently are not. We
try to mark such bugs as `KNOWN_BUGS material` after a time of inactivity and
if no activity is noticed after yet some time those bugs are added to the
`KNOWN_BUGS` document and are closed in the issue tracker.
## `KNOWN_BUGS`
This is a list of known bugs. Bugs we know exist and that have been pointed
out but that have not yet been fixed. The reasons for why they have not been
fixed can involve anything really, but the primary reason is that nobody has
considered these problems to be important enough to spend the necessary time
and effort to have them fixed.
The `KNOWN_BUGS` items are always up for grabs and we love the ones who bring
one of them back to life and offer solutions to them.
The `KNOWN_BUGS` document has a sibling document known as `TODO`.
## `TODO`
Issues that are filed or reported that are not really bugs but more missing
features or ideas for future improvements and so on are marked as
'enhancement' or 'feature-request' and will be added to the `TODO` document
and the issues are closed. We do not keep TODO items open in the issue
tracker.
The `TODO` document is full of ideas and suggestions of what we can add or
fix one day. You are always encouraged and free to grab one of those items and
take up a discussion with the curl development team on how that could be
implemented or provided in the project so that you can work on ticking it odd
that document.
If an issue is rather a bug and not a missing feature or functionality, it is
listed in `KNOWN_BUGS` instead.
## Closing off stalled bugs
The [issue and pull request trackers](https://github.com/curl/curl) only
hold "active" entries open (using a non-precise definition of what active
actually is, but they are at least not completely dead). Those that are
abandoned or in other ways dormant will be closed and sometimes added to
`TODO` and `KNOWN_BUGS` instead.
This way, we only have "active" issues open on GitHub. Irrelevant issues and
pull requests will not distract developers or casual visitors.

@ -1,182 +0,0 @@
# checksrc
This is the tool we use within the curl project to scan C source code and
check that it adheres to our [Source Code Style guide](CODE_STYLE.md).
## Usage
checksrc.pl [options] [file1] [file2] ...
## Command line options
`-W[file]` skip that file and exclude it from being checked. Helpful
when, for example, one of the files is generated.
`-D[dir]` directory name to prepend to file names when accessing them.
`-h` shows the help output, that also lists all recognized warnings
## What does `checksrc` warn for?
`checksrc` does not check and verify the code against the entire style guide.
The script is an effort to detect the most common mistakes and syntax mistakes
that contributors make before they get accustomed to our code style. Heck,
many of us regulars do the mistakes too and this script helps us keep the code
in shape.
checksrc.pl -h
Lists how to use the script and it lists all existing warnings it has and
problems it detects. At the time of this writing, the existing `checksrc`
warnings are:
- `ASSIGNWITHINCONDITION`: Assignment within a conditional expression. The
code style mandates the assignment to be done outside of it.
- `ASTERISKNOSPACE`: A pointer was declared like `char* name` instead of the
more appropriate `char *name` style. The asterisk should sit next to the
name.
- `ASTERISKSPACE`: A pointer was declared like `char * name` instead of the
more appropriate `char *name` style. The asterisk should sit right next to
the name without a space in between.
- `BADCOMMAND`: There's a bad `checksrc` instruction in the code. See the
**Ignore certain warnings** section below for details.
- `BANNEDFUNC`: A banned function was used. The functions sprintf, vsprintf,
strcat, strncat, gets are **never** allowed in curl source code.
- `BRACEELSE`: '} else' on the same line. The else is supposed to be on the
following line.
- `BRACEPOS`: wrong position for an open brace (`{`).
- `BRACEWHILE`: more than once space between end brace and while keyword
- `COMMANOSPACE`: a comma without following space
- `COPYRIGHT`: the file is missing a copyright statement
- `CPPCOMMENTS`: `//` comment detected, that is not C89 compliant
- `DOBRACE`: only use one space after do before open brace
- `EMPTYLINEBRACE`: found empty line before open brace
- `EQUALSNOSPACE`: no space after `=` sign
- `EQUALSNULL`: comparison with `== NULL` used in if/while. We use `!var`.
- `EXCLAMATIONSPACE`: space found after exclamations mark
- `FOPENMODE`: `fopen()` needs a macro for the mode string, use it
- `INDENTATION`: detected a wrong start column for code. Note that this
warning only checks some specific places and will certainly miss many bad
indentations.
- `LONGLINE`: A line is longer than 79 columns.
- `MULTISPACE`: Multiple spaces were found where only one should be used.
- `NOSPACEEQUALS`: An equals sign was found without preceding space. We prefer
`a = 2` and *not* `a=2`.
- `NOTEQUALSZERO`: check found using `!= 0`. We use plain `if(var)`.
- `ONELINECONDITION`: do not put the conditional block on the same line as `if()`
- `OPENCOMMENT`: File ended with a comment (`/*`) still "open".
- `PARENBRACE`: `){` was used without sufficient space in between.
- `RETURNNOSPACE`: `return` was used without space between the keyword and the
following value.
- `SEMINOSPACE`: There was no space (or newline) following a semicolon.
- `SIZEOFNOPAREN`: Found use of sizeof without parentheses. We prefer
`sizeof(int)` style.
- `SNPRINTF` - Found use of `snprintf()`. Since we use an internal replacement
with a different return code etc, we prefer `msnprintf()`.
- `SPACEAFTERPAREN`: there was a space after open parenthesis, `( text`.
- `SPACEBEFORECLOSE`: there was a space before a close parenthesis, `text )`.
- `SPACEBEFORECOMMA`: there was a space before a comma, `one , two`.
- `SPACEBEFOREPAREN`: there was a space before an open parenthesis, `if (`,
where one was not expected
- `SPACESEMICOLON`: there was a space before semicolon, ` ;`.
- `TABS`: TAB characters are not allowed
- `TRAILINGSPACE`: Trailing whitespace on the line
- `TYPEDEFSTRUCT`: we frown upon (most) typedefed structs
- `UNUSEDIGNORE`: a `checksrc` inlined warning ignore was asked for but not
used, that is an ignore that should be removed or changed to get used.
### Extended warnings
Some warnings are quite computationally expensive to perform, so they are
turned off by default. To enable these warnings, place a `.checksrc` file in
the directory where they should be activated with commands to enable the
warnings you are interested in. The format of the file is to enable one
warning per line like so: `enable <EXTENDEDWARNING>`
Currently these are the extended warnings which can be enabled:
- `COPYRIGHTYEAR`: the current changeset has not updated the copyright year in
the source file
- `STRERROR`: use of banned function strerror()
## Ignore certain warnings
Due to the nature of the source code and the flaws of the `checksrc` tool,
there is sometimes a need to ignore specific warnings. `checksrc` allows a few
different ways to do this.
### Inline ignore
You can control what to ignore within a specific source file by providing
instructions to `checksrc` in the source code itself. See examples below. The
instruction can ask to ignore a specific warning a specific number of times or
you ignore all of them until you mark the end of the ignored section.
Inline ignores are only done for that single specific source code file.
Example
/* !checksrc! disable LONGLINE all */
This will ignore the warning for overly long lines until it is re-enabled with:
/* !checksrc! enable LONGLINE */
If the enabling is not performed before the end of the file, it will be enabled
automatically for the next file.
You can also opt to ignore just N violations so that if you have a single long
line you just cannot shorten and is agreed to be fine anyway:
/* !checksrc! disable LONGLINE 1 */
... and the warning for long lines will be enabled again automatically after
it has ignored that single warning. The number `1` can of course be changed to
any other integer number. It can be used to make sure only the exact intended
instances are ignored and nothing extra.
### Directory wide ignore patterns
This is a method we have transitioned away from. Use inline ignores as far as
possible.
Make a `checksrc.skip` file in the directory of the source code with the
false positive, and include the full offending line into this file.

@ -1,591 +0,0 @@
# Ciphers
With curl's options
[`CURLOPT_SSL_CIPHER_LIST`](https://curl.se/libcurl/c/CURLOPT_SSL_CIPHER_LIST.html)
and
[`--ciphers`](https://curl.se/docs/manpage.html#--ciphers)
users can control which ciphers to consider when negotiating TLS connections.
TLS 1.3 ciphers are supported since curl 7.61 for OpenSSL 1.1.1+, and since
curl 7.85 for Schannel with options
[`CURLOPT_TLS13_CIPHERS`](https://curl.se/libcurl/c/CURLOPT_TLS13_CIPHERS.html)
and
[`--tls13-ciphers`](https://curl.se/docs/manpage.html#--tls13-ciphers)
. If you are using a different SSL backend you can try setting TLS 1.3 cipher
suites by using the respective regular cipher option.
The names of the known ciphers differ depending on which TLS backend that
libcurl was built to use. This is an attempt to list known cipher names.
## OpenSSL
(based on [OpenSSL docs](https://www.openssl.org/docs/manmaster/man1/openssl-ciphers.html))
When specifying multiple cipher names, separate them with colon (`:`).
### SSL3 cipher suites
`NULL-MD5`
`NULL-SHA`
`RC4-MD5`
`RC4-SHA`
`IDEA-CBC-SHA`
`DES-CBC3-SHA`
`DH-DSS-DES-CBC3-SHA`
`DH-RSA-DES-CBC3-SHA`
`DHE-DSS-DES-CBC3-SHA`
`DHE-RSA-DES-CBC3-SHA`
`ADH-RC4-MD5`
`ADH-DES-CBC3-SHA`
### TLS v1.0 cipher suites
`NULL-MD5`
`NULL-SHA`
`RC4-MD5`
`RC4-SHA`
`IDEA-CBC-SHA`
`DES-CBC3-SHA`
`DHE-DSS-DES-CBC3-SHA`
`DHE-RSA-DES-CBC3-SHA`
`ADH-RC4-MD5`
`ADH-DES-CBC3-SHA`
### AES cipher suites from RFC3268, extending TLS v1.0
`AES128-SHA`
`AES256-SHA`
`DH-DSS-AES128-SHA`
`DH-DSS-AES256-SHA`
`DH-RSA-AES128-SHA`
`DH-RSA-AES256-SHA`
`DHE-DSS-AES128-SHA`
`DHE-DSS-AES256-SHA`
`DHE-RSA-AES128-SHA`
`DHE-RSA-AES256-SHA`
`ADH-AES128-SHA`
`ADH-AES256-SHA`
### SEED cipher suites from RFC4162, extending TLS v1.0
`SEED-SHA`
`DH-DSS-SEED-SHA`
`DH-RSA-SEED-SHA`
`DHE-DSS-SEED-SHA`
`DHE-RSA-SEED-SHA`
`ADH-SEED-SHA`
### GOST cipher suites, extending TLS v1.0
`GOST94-GOST89-GOST89`
`GOST2001-GOST89-GOST89`
`GOST94-NULL-GOST94`
`GOST2001-NULL-GOST94`
### Elliptic curve cipher suites
`ECDHE-RSA-NULL-SHA`
`ECDHE-RSA-RC4-SHA`
`ECDHE-RSA-DES-CBC3-SHA`
`ECDHE-RSA-AES128-SHA`
`ECDHE-RSA-AES256-SHA`
`ECDHE-ECDSA-NULL-SHA`
`ECDHE-ECDSA-RC4-SHA`
`ECDHE-ECDSA-DES-CBC3-SHA`
`ECDHE-ECDSA-AES128-SHA`
`ECDHE-ECDSA-AES256-SHA`
`AECDH-NULL-SHA`
`AECDH-RC4-SHA`
`AECDH-DES-CBC3-SHA`
`AECDH-AES128-SHA`
`AECDH-AES256-SHA`
### TLS v1.2 cipher suites
`NULL-SHA256`
`AES128-SHA256`
`AES256-SHA256`
`AES128-GCM-SHA256`
`AES256-GCM-SHA384`
`DH-RSA-AES128-SHA256`
`DH-RSA-AES256-SHA256`
`DH-RSA-AES128-GCM-SHA256`
`DH-RSA-AES256-GCM-SHA384`
`DH-DSS-AES128-SHA256`
`DH-DSS-AES256-SHA256`
`DH-DSS-AES128-GCM-SHA256`
`DH-DSS-AES256-GCM-SHA384`
`DHE-RSA-AES128-SHA256`
`DHE-RSA-AES256-SHA256`
`DHE-RSA-AES128-GCM-SHA256`
`DHE-RSA-AES256-GCM-SHA384`
`DHE-DSS-AES128-SHA256`
`DHE-DSS-AES256-SHA256`
`DHE-DSS-AES128-GCM-SHA256`
`DHE-DSS-AES256-GCM-SHA384`
`ECDHE-RSA-AES128-SHA256`
`ECDHE-RSA-AES256-SHA384`
`ECDHE-RSA-AES128-GCM-SHA256`
`ECDHE-RSA-AES256-GCM-SHA384`
`ECDHE-ECDSA-AES128-SHA256`
`ECDHE-ECDSA-AES256-SHA384`
`ECDHE-ECDSA-AES128-GCM-SHA256`
`ECDHE-ECDSA-AES256-GCM-SHA384`
`ADH-AES128-SHA256`
`ADH-AES256-SHA256`
`ADH-AES128-GCM-SHA256`
`ADH-AES256-GCM-SHA384`
`AES128-CCM`
`AES256-CCM`
`DHE-RSA-AES128-CCM`
`DHE-RSA-AES256-CCM`
`AES128-CCM8`
`AES256-CCM8`
`DHE-RSA-AES128-CCM8`
`DHE-RSA-AES256-CCM8`
`ECDHE-ECDSA-AES128-CCM`
`ECDHE-ECDSA-AES256-CCM`
`ECDHE-ECDSA-AES128-CCM8`
`ECDHE-ECDSA-AES256-CCM8`
### Camellia HMAC-Based cipher suites from RFC6367, extending TLS v1.2
`ECDHE-ECDSA-CAMELLIA128-SHA256`
`ECDHE-ECDSA-CAMELLIA256-SHA384`
`ECDHE-RSA-CAMELLIA128-SHA256`
`ECDHE-RSA-CAMELLIA256-SHA384`
### TLS 1.3 cipher suites
(Note these ciphers are set with `CURLOPT_TLS13_CIPHERS` and `--tls13-ciphers`)
`TLS_AES_256_GCM_SHA384`
`TLS_CHACHA20_POLY1305_SHA256`
`TLS_AES_128_GCM_SHA256`
`TLS_AES_128_CCM_8_SHA256`
`TLS_AES_128_CCM_SHA256`
## NSS
### Totally insecure
`rc4`
`rc4-md5`
`rc4export`
`rc2`
`rc2export`
`des`
`desede3`
### SSL3/TLS cipher suites
`rsa_rc4_128_md5`
`rsa_rc4_128_sha`
`rsa_3des_sha`
`rsa_des_sha`
`rsa_rc4_40_md5`
`rsa_rc2_40_md5`
`rsa_null_md5`
`rsa_null_sha`
`fips_3des_sha`
`fips_des_sha`
`fortezza`
`fortezza_rc4_128_sha`
`fortezza_null`
### TLS 1.0 Exportable 56-bit Cipher Suites
`rsa_des_56_sha`
`rsa_rc4_56_sha`
### AES ciphers
`dhe_dss_aes_128_cbc_sha`
`dhe_dss_aes_256_cbc_sha`
`dhe_rsa_aes_128_cbc_sha`
`dhe_rsa_aes_256_cbc_sha`
`rsa_aes_128_sha`
`rsa_aes_256_sha`
### ECC ciphers
`ecdh_ecdsa_null_sha`
`ecdh_ecdsa_rc4_128_sha`
`ecdh_ecdsa_3des_sha`
`ecdh_ecdsa_aes_128_sha`
`ecdh_ecdsa_aes_256_sha`
`ecdhe_ecdsa_null_sha`
`ecdhe_ecdsa_rc4_128_sha`
`ecdhe_ecdsa_3des_sha`
`ecdhe_ecdsa_aes_128_sha`
`ecdhe_ecdsa_aes_256_sha`
`ecdh_rsa_null_sha`
`ecdh_rsa_128_sha`
`ecdh_rsa_3des_sha`
`ecdh_rsa_aes_128_sha`
`ecdh_rsa_aes_256_sha`
`ecdhe_rsa_null`
`ecdhe_rsa_rc4_128_sha`
`ecdhe_rsa_3des_sha`
`ecdhe_rsa_aes_128_sha`
`ecdhe_rsa_aes_256_sha`
`ecdh_anon_null_sha`
`ecdh_anon_rc4_128sha`
`ecdh_anon_3des_sha`
`ecdh_anon_aes_128_sha`
`ecdh_anon_aes_256_sha`
### HMAC-SHA256 cipher suites
`rsa_null_sha_256`
`rsa_aes_128_cbc_sha_256`
`rsa_aes_256_cbc_sha_256`
`dhe_rsa_aes_128_cbc_sha_256`
`dhe_rsa_aes_256_cbc_sha_256`
`ecdhe_ecdsa_aes_128_cbc_sha_256`
`ecdhe_rsa_aes_128_cbc_sha_256`
### AES GCM cipher suites in RFC 5288 and RFC 5289
`rsa_aes_128_gcm_sha_256`
`dhe_rsa_aes_128_gcm_sha_256`
`dhe_dss_aes_128_gcm_sha_256`
`ecdhe_ecdsa_aes_128_gcm_sha_256`
`ecdh_ecdsa_aes_128_gcm_sha_256`
`ecdhe_rsa_aes_128_gcm_sha_256`
`ecdh_rsa_aes_128_gcm_sha_256`
### cipher suites using SHA384
`rsa_aes_256_gcm_sha_384`
`dhe_rsa_aes_256_gcm_sha_384`
`dhe_dss_aes_256_gcm_sha_384`
`ecdhe_ecdsa_aes_256_sha_384`
`ecdhe_rsa_aes_256_sha_384`
`ecdhe_ecdsa_aes_256_gcm_sha_384`
`ecdhe_rsa_aes_256_gcm_sha_384`
### chacha20-poly1305 cipher suites
`ecdhe_rsa_chacha20_poly1305_sha_256`
`ecdhe_ecdsa_chacha20_poly1305_sha_256`
`dhe_rsa_chacha20_poly1305_sha_256`
### TLS 1.3 cipher suites
`aes_128_gcm_sha_256`
`aes_256_gcm_sha_384`
`chacha20_poly1305_sha_256`
## GSKit
Ciphers are internally defined as [numeric
codes](https://www.ibm.com/support/knowledgecenter/ssw_ibm_i_73/apis/gsk_attribute_set_buffer.htm). libcurl
maps them to the following case-insensitive names.
### SSL2 cipher suites (insecure: disabled by default)
`rc2-md5`
`rc4-md5`
`exp-rc2-md5`
`exp-rc4-md5`
`des-cbc-md5`
`des-cbc3-md5`
### SSL3 cipher suites
`null-md5`
`null-sha`
`rc4-md5`
`rc4-sha`
`exp-rc2-cbc-md5`
`exp-rc4-md5`
`exp-des-cbc-sha`
`des-cbc3-sha`
### TLS v1.0 cipher suites
`null-md5`
`null-sha`
`rc4-md5`
`rc4-sha`
`exp-rc2-cbc-md5`
`exp-rc4-md5`
`exp-des-cbc-sha`
`des-cbc3-sha`
`aes128-sha`
`aes256-sha`
### TLS v1.1 cipher suites
`null-md5`
`null-sha`
`rc4-md5`
`rc4-sha`
`exp-des-cbc-sha`
`des-cbc3-sha`
`aes128-sha`
`aes256-sha`
### TLS v1.2 cipher suites
`null-md5`
`null-sha`
`null-sha256`
`rc4-md5`
`rc4-sha`
`des-cbc3-sha`
`aes128-sha`
`aes256-sha`
`aes128-sha256`
`aes256-sha256`
`aes128-gcm-sha256`
`aes256-gcm-sha384`
## WolfSSL
`RC4-SHA`,
`RC4-MD5`,
`DES-CBC3-SHA`,
`AES128-SHA`,
`AES256-SHA`,
`NULL-SHA`,
`NULL-SHA256`,
`DHE-RSA-AES128-SHA`,
`DHE-RSA-AES256-SHA`,
`DHE-PSK-AES256-GCM-SHA384`,
`DHE-PSK-AES128-GCM-SHA256`,
`PSK-AES256-GCM-SHA384`,
`PSK-AES128-GCM-SHA256`,
`DHE-PSK-AES256-CBC-SHA384`,
`DHE-PSK-AES128-CBC-SHA256`,
`PSK-AES256-CBC-SHA384`,
`PSK-AES128-CBC-SHA256`,
`PSK-AES128-CBC-SHA`,
`PSK-AES256-CBC-SHA`,
`DHE-PSK-AES128-CCM`,
`DHE-PSK-AES256-CCM`,
`PSK-AES128-CCM`,
`PSK-AES256-CCM`,
`PSK-AES128-CCM-8`,
`PSK-AES256-CCM-8`,
`DHE-PSK-NULL-SHA384`,
`DHE-PSK-NULL-SHA256`,
`PSK-NULL-SHA384`,
`PSK-NULL-SHA256`,
`PSK-NULL-SHA`,
`HC128-MD5`,
`HC128-SHA`,
`HC128-B2B256`,
`AES128-B2B256`,
`AES256-B2B256`,
`RABBIT-SHA`,
`NTRU-RC4-SHA`,
`NTRU-DES-CBC3-SHA`,
`NTRU-AES128-SHA`,
`NTRU-AES256-SHA`,
`AES128-CCM-8`,
`AES256-CCM-8`,
`ECDHE-ECDSA-AES128-CCM`,
`ECDHE-ECDSA-AES128-CCM-8`,
`ECDHE-ECDSA-AES256-CCM-8`,
`ECDHE-RSA-AES128-SHA`,
`ECDHE-RSA-AES256-SHA`,
`ECDHE-ECDSA-AES128-SHA`,
`ECDHE-ECDSA-AES256-SHA`,
`ECDHE-RSA-RC4-SHA`,
`ECDHE-RSA-DES-CBC3-SHA`,
`ECDHE-ECDSA-RC4-SHA`,
`ECDHE-ECDSA-DES-CBC3-SHA`,
`AES128-SHA256`,
`AES256-SHA256`,
`DHE-RSA-AES128-SHA256`,
`DHE-RSA-AES256-SHA256`,
`ECDH-RSA-AES128-SHA`,
`ECDH-RSA-AES256-SHA`,
`ECDH-ECDSA-AES128-SHA`,
`ECDH-ECDSA-AES256-SHA`,
`ECDH-RSA-RC4-SHA`,
`ECDH-RSA-DES-CBC3-SHA`,
`ECDH-ECDSA-RC4-SHA`,
`ECDH-ECDSA-DES-CBC3-SHA`,
`AES128-GCM-SHA256`,
`AES256-GCM-SHA384`,
`DHE-RSA-AES128-GCM-SHA256`,
`DHE-RSA-AES256-GCM-SHA384`,
`ECDHE-RSA-AES128-GCM-SHA256`,
`ECDHE-RSA-AES256-GCM-SHA384`,
`ECDHE-ECDSA-AES128-GCM-SHA256`,
`ECDHE-ECDSA-AES256-GCM-SHA384`,
`ECDH-RSA-AES128-GCM-SHA256`,
`ECDH-RSA-AES256-GCM-SHA384`,
`ECDH-ECDSA-AES128-GCM-SHA256`,
`ECDH-ECDSA-AES256-GCM-SHA384`,
`CAMELLIA128-SHA`,
`DHE-RSA-CAMELLIA128-SHA`,
`CAMELLIA256-SHA`,
`DHE-RSA-CAMELLIA256-SHA`,
`CAMELLIA128-SHA256`,
`DHE-RSA-CAMELLIA128-SHA256`,
`CAMELLIA256-SHA256`,
`DHE-RSA-CAMELLIA256-SHA256`,
`ECDHE-RSA-AES128-SHA256`,
`ECDHE-ECDSA-AES128-SHA256`,
`ECDH-RSA-AES128-SHA256`,
`ECDH-ECDSA-AES128-SHA256`,
`ECDHE-RSA-AES256-SHA384`,
`ECDHE-ECDSA-AES256-SHA384`,
`ECDH-RSA-AES256-SHA384`,
`ECDH-ECDSA-AES256-SHA384`,
`ECDHE-RSA-CHACHA20-POLY1305`,
`ECDHE-ECDSA-CHACHA20-POLY1305`,
`DHE-RSA-CHACHA20-POLY1305`,
`ECDHE-RSA-CHACHA20-POLY1305-OLD`,
`ECDHE-ECDSA-CHACHA20-POLY1305-OLD`,
`DHE-RSA-CHACHA20-POLY1305-OLD`,
`ADH-AES128-SHA`,
`QSH`,
`RENEGOTIATION-INFO`,
`IDEA-CBC-SHA`,
`ECDHE-ECDSA-NULL-SHA`,
`ECDHE-PSK-NULL-SHA256`,
`ECDHE-PSK-AES128-CBC-SHA256`,
`PSK-CHACHA20-POLY1305`,
`ECDHE-PSK-CHACHA20-POLY1305`,
`DHE-PSK-CHACHA20-POLY1305`,
`EDH-RSA-DES-CBC3-SHA`,
## Schannel
Schannel allows the enabling and disabling of encryption algorithms, but not
specific cipher suites. They are
[defined](https://docs.microsoft.com/windows/desktop/SecCrypto/alg-id) by
Microsoft.
There is also the case that the selected algorithm is not supported by the
protocol or does not match the ciphers offered by the server during the SSL
negotiation. In this case curl will return error
`CURLE_SSL_CONNECT_ERROR (35) SEC_E_ALGORITHM_MISMATCH`
and the request will fail.
`CALG_MD2`,
`CALG_MD4`,
`CALG_MD5`,
`CALG_SHA`,
`CALG_SHA1`,
`CALG_MAC`,
`CALG_RSA_SIGN`,
`CALG_DSS_SIGN`,
`CALG_NO_SIGN`,
`CALG_RSA_KEYX`,
`CALG_DES`,
`CALG_3DES_112`,
`CALG_3DES`,
`CALG_DESX`,
`CALG_RC2`,
`CALG_RC4`,
`CALG_SEAL`,
`CALG_DH_SF`,
`CALG_DH_EPHEM`,
`CALG_AGREEDKEY_ANY`,
`CALG_HUGHES_MD5`,
`CALG_SKIPJACK`,
`CALG_TEK`,
`CALG_CYLINK_MEK`,
`CALG_SSL3_SHAMD5`,
`CALG_SSL3_MASTER`,
`CALG_SCHANNEL_MASTER_HASH`,
`CALG_SCHANNEL_MAC_KEY`,
`CALG_SCHANNEL_ENC_KEY`,
`CALG_PCT1_MASTER`,
`CALG_SSL2_MASTER`,
`CALG_TLS1_MASTER`,
`CALG_RC5`,
`CALG_HMAC`,
`CALG_TLS1PRF`,
`CALG_HASH_REPLACE_OWF`,
`CALG_AES_128`,
`CALG_AES_192`,
`CALG_AES_256`,
`CALG_AES`,
`CALG_SHA_256`,
`CALG_SHA_384`,
`CALG_SHA_512`,
`CALG_ECDH`,
`CALG_ECMQV`,
`CALG_ECDSA`,
`CALG_ECDH_EPHEM`,
As of curl 7.77.0, you can also pass `SCH_USE_STRONG_CRYPTO` as a cipher name
to [constrain the set of available ciphers as specified in the Schannel
documentation](https://docs.microsoft.com/en-us/windows/win32/secauthn/tls-cipher-suites-in-windows-server-2022).
Note that the supported ciphers in this case follow the OS version, so if you
are running an outdated OS you might still be supporting weak ciphers.
### TLS 1.3 cipher suites
(Note these ciphers are set with `CURLOPT_TLS13_CIPHERS` and `--tls13-ciphers`)
`TLS_AES_256_GCM_SHA384`
`TLS_AES_128_GCM_SHA256`
`TLS_CHACHA20_POLY1305_SHA256`
`TLS_AES_128_CCM_8_SHA256`
`TLS_AES_128_CCM_SHA256`
## BearSSL
BearSSL ciphers can be specified by either the OpenSSL name (`ECDHE-RSA-AES128-GCM-SHA256`) or the IANA name (`TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256`).
Since BearSSL 0.1:
`DES-CBC3-SHA`
`AES128-SHA`
`AES256-SHA`
`AES128-SHA256`
`AES256-SHA256`
`AES128-GCM-SHA256`
`AES256-GCM-SHA384`
`ECDH-ECDSA-DES-CBC3-SHA`
`ECDH-ECDSA-AES128-SHA`
`ECDH-ECDSA-AES256-SHA`
`ECDHE-ECDSA-DES-CBC3-SHA`
`ECDHE-ECDSA-AES128-SHA`
`ECDHE-ECDSA-AES256-SHA`
`ECDH-RSA-DES-CBC3-SHA`
`ECDH-RSA-AES128-SHA`
`ECDH-RSA-AES256-SHA`
`ECDHE-RSA-DES-CBC3-SHA`
`ECDHE-RSA-AES128-SHA`
`ECDHE-RSA-AES256-SHA`
`ECDHE-ECDSA-AES128-SHA256`
`ECDHE-ECDSA-AES256-SHA384`
`ECDH-ECDSA-AES128-SHA256`
`ECDH-ECDSA-AES256-SHA384`
`ECDHE-RSA-AES128-SHA256`
`ECDHE-RSA-AES256-SHA384`
`ECDH-RSA-AES128-SHA256`
`ECDH-RSA-AES256-SHA384`
`ECDHE-ECDSA-AES128-GCM-SHA256`
`ECDHE-ECDSA-AES256-GCM-SHA384`
`ECDH-ECDSA-AES128-GCM-SHA256`
`ECDH-ECDSA-AES256-GCM-SHA384`
`ECDHE-RSA-AES128-GCM-SHA256`
`ECDHE-RSA-AES256-GCM-SHA384`
`ECDH-RSA-AES128-GCM-SHA256`
`ECDH-RSA-AES256-GCM-SHA384`
Since BearSSL 0.2:
`ECDHE-RSA-CHACHA20-POLY1305`
`ECDHE-ECDSA-CHACHA20-POLY1305`
Since BearSSL 0.6:
`AES128-CCM`
`AES256-CCM`
`AES128-CCM8`
`AES256-CCM8`
`ECDHE-ECDSA-AES128-CCM`
`ECDHE-ECDSA-AES256-CCM`
`ECDHE-ECDSA-AES128-CCM8`
`ECDHE-ECDSA-AES256-CCM8`

@ -1,26 +0,0 @@
#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################
#add_subdirectory(examples)
add_subdirectory(libcurl)
add_subdirectory(cmdline-opts)

@ -1,32 +0,0 @@
Contributor Code of Conduct
===========================
As contributors and maintainers of this project, we pledge to respect all
people who contribute through reporting issues, posting feature requests,
updating documentation, submitting pull requests or patches, and other
activities.
We are committed to making participation in this project a harassment-free
experience for everyone, regardless of level of experience, gender, gender
identity and expression, sexual orientation, disability, personal appearance,
body size, race, ethnicity, age, or religion.
Examples of unacceptable behavior by participants include the use of sexual
language or imagery, derogatory comments or personal attacks, trolling, public
or private harassment, insults, or other unprofessional conduct.
Project maintainers have the right and responsibility to remove, edit, or
reject comments, commits, code, wiki edits, issues, and other contributions
that are not aligned to this Code of Conduct. Project maintainers who do not
follow the Code of Conduct may be removed from the project team.
This code of conduct applies both within project spaces and in public spaces
when an individual is representing the project or its community.
Instances of abusive, harassing, or otherwise unacceptable behavior may be
reported by opening an issue or contacting one or more of the project
maintainers.
This Code of Conduct is adapted from the [Contributor
Covenant](https://contributor-covenant.org/), version 1.1.0, available at
[https://contributor-covenant.org/version/1/1/0/](https://contributor-covenant.org/version/1/1/0/)

@ -1,168 +0,0 @@
# How to do code reviews for curl
Anyone and everyone is encouraged and welcome to review code submissions in
curl. This is a guide on what to check for and how to perform a successful
code review.
## All submissions should get reviewed
All pull requests and patches submitted to the project should be reviewed by
at least one experienced curl maintainer before that code is accepted and
merged.
## Let the tools and tests take the first rounds
On initial pull requests, let the tools and tests do their job first and then
start out by helping the submitter understand the test failures and tool
alerts.
## How to provide feedback to author
Be nice. Ask questions. Provide examples or suggestions of improvements.
Assume the best intentions. Remember language barriers.
All first-time contributors can become regulars. Let's help them go there.
## Is this a change we want?
If this is not a change that seems to be aligned with the project's path
forward and as such cannot be accepted, inform the author about this sooner
rather than later. Do it gently and explain why and possibly what could be
done to make it more acceptable.
## API/ABI stability or changed behavior
Changing the API and the ABI may be fine in a change but it needs to be done
deliberately and carefully. If not, a reviewer must help the author to realize
the mistake.
curl and libcurl are similarly strict on not modifying existing behavior. API
and ABI stability is not enough, the behavior should also remain intact as far
as possible.
## Code style
Most code style nits are detected by checksrc but not all. Only leave remarks
on style deviation once checksrc does not find anymore.
Minor nits from fresh submitters can also be handled by the maintainer when
merging, in case it seems like the submitter is not clear on what to do. We
want to make the process fun and exciting for new contributors.
## Encourage consistency
Make sure new code is written in a similar style as existing code. Naming,
logic, conditions, etc.
## Are pointers always non-NULL?
If a function or code rely on pointers being non-NULL, take an extra look if
that seems to be a fair assessment.
## Asserts
Conditions that should never be false can be verified with `DEBUGASSERT()`
calls to get caught in tests and debugging easier, while not having an impact
on final or release builds.
## Memory allocation
Can the mallocs be avoided? Do not introduce mallocs in any hot paths. If
there are (new) mallocs, can they be combined into fewer calls?
Are all allocations handled in error paths to avoid leaks and crashes?
## Thread-safety
We do not like static variables as they break thread-safety and prevent
functions from being reentrant.
## Should features be `#ifdef`ed?
Features and functionality may not be present everywhere and should therefore
be `#ifdef`ed. Additionally, some features should be possible to switch on/off
in the build.
Write `#ifdef`s to be as little of a "maze" as possible.
## Does it look portable enough?
curl runs "everywhere". Does the code take a reasonable stance and enough
precautions to be possible to build and run on most platforms?
Remember that we live by C89 restrictions.
## Tests and testability
New features should be added in conjunction with one or more test cases.
Ideally, functions should also be written so that unit tests can be done to
test individual functions.
## Documentation
New features or changes to existing functionality **must** be accompanied by
updated documentation. Submitting that in a separate follow-up pull request is
not OK. A code review must also verify that the submitted documentation update
matches the code submission.
English is not everyone's first language, be mindful of this and help the
submitter improve the text if it needs a rewrite to read better.
## Code should not be hard to understand
Source code should be written to maximize readability and be easy to
understand.
## Functions should not be large
A single function should never be large as that makes it hard to follow and
understand all the exit points and state changes. Some existing functions in
curl certainly violate this ground rule but when reviewing new code we should
propose splitting into smaller functions.
## Duplication is evil
Anything that looks like duplicated code is a red flag. Anything that seems to
introduce code that we *should* already have or provide needs a closer check.
## Sensitive data
When credentials are involved, take an extra look at what happens with this
data. Where it comes from and where it goes.
## Variable types differ
`size_t` is not a fixed size. `time_t` can be signed or unsigned and have
different sizes. Relying on variable sizes is a red flag.
Also remember that endianness and >= 32 bit accesses to unaligned addresses
are problematic areas.
## Integer overflows
Be careful about integer overflows. Some variable types can be either 32 bit
or 64 bit. Integer overflows must be detected and acted on *before* they
happen.
## Dangerous use of functions
Maybe use of `realloc()` should rather use the dynbuf functions?
Do not allow new code that grows buffers without using dynbuf.
Use of C functions that rely on a terminating zero must only be used on data
that really do have a null-terminating zero.
## Dangerous "data styles"
Make extra precautions and verify that memory buffers that need a terminating
zero always have exactly that. Buffers *without* a null-terminator must not be
used as input to string functions.
# Commit messages
Tightly coupled with a code review is making sure that the commit message is
good. It is the responsibility of the person who merges the code to make sure
that the commit message follows our standard (detailed in the
[CONTRIBUTE](CONTRIBUTE.md) document). This includes making sure the PR
identifies related issues and giving credit to reporters and helpers.

@ -1,310 +0,0 @@
# curl C code style
Source code that has a common style is easier to read than code that uses
different styles in different places. It helps making the code feel like one
single code base. Easy-to-read is an important property of code and helps
making it easier to review when new things are added and it helps debugging
code when developers are trying to figure out why things go wrong. A unified
style is more important than individual contributors having their own personal
tastes satisfied.
Our C code has a few style rules. Most of them are verified and upheld by the
`scripts/checksrc.pl` script. Invoked with `make checksrc` or even by default
by the build system when built after `./configure --enable-debug` has been
used.
It is normally not a problem for anyone to follow the guidelines, as you just
need to copy the style already used in the source code and there are no
particularly unusual rules in our set of rules.
We also work hard on writing code that are warning-free on all the major
platforms and in general on as many platforms as possible. Code that obviously
will cause warnings will not be accepted as-is.
## Naming
Try using a non-confusing naming scheme for your new functions and variable
names. It does not necessarily have to mean that you should use the same as in
other places of the code, just that the names should be logical,
understandable and be named according to what they are used for. File-local
functions should be made static. We like lower case names.
See the [INTERNALS](https://curl.se/dev/internals.html#symbols) document on
how we name non-exported library-global symbols.
## Indenting
We use only spaces for indentation, never TABs. We use two spaces for each new
open brace.
```c
if(something_is_true) {
while(second_statement == fine) {
moo();
}
}
```
## Comments
Since we write C89 code, **//** comments are not allowed. They were not
introduced in the C standard until C99. We use only __/* comments */__.
```c
/* this is a comment */
```
## Long lines
Source code in curl may never be wider than 79 columns and there are two
reasons for maintaining this even in the modern era of large and high
resolution screens:
1. Narrower columns are easier to read than wide ones. There's a reason
newspapers have used columns for decades or centuries.
2. Narrower columns allow developers to easier show multiple pieces of code
next to each other in different windows. It allows two or three source
code windows next to each other on the same screen - as well as multiple
terminal and debugging windows.
## Braces
In if/while/do/for expressions, we write the open brace on the same line as
the keyword and we then set the closing brace on the same indentation level as
the initial keyword. Like this:
```c
if(age < 40) {
/* clearly a youngster */
}
```
You may omit the braces if they would contain only a one-line statement:
```c
if(!x)
continue;
```
For functions the opening brace should be on a separate line:
```c
int main(int argc, char **argv)
{
return 1;
}
```
## 'else' on the following line
When adding an **else** clause to a conditional expression using braces, we
add it on a new line after the closing brace. Like this:
```c
if(age < 40) {
/* clearly a youngster */
}
else {
/* probably grumpy */
}
```
## No space before parentheses
When writing expressions using if/while/do/for, there shall be no space
between the keyword and the open parenthesis. Like this:
```c
while(1) {
/* loop forever */
}
```
## Use boolean conditions
Rather than test a conditional value such as a bool against TRUE or FALSE, a
pointer against NULL or != NULL and an int against zero or not zero in
if/while conditions we prefer:
```c
result = do_something();
if(!result) {
/* something went wrong */
return result;
}
```
## No assignments in conditions
To increase readability and reduce complexity of conditionals, we avoid
assigning variables within if/while conditions. We frown upon this style:
```c
if((ptr = malloc(100)) == NULL)
return NULL;
```
and instead we encourage the above version to be spelled out more clearly:
```c
ptr = malloc(100);
if(!ptr)
return NULL;
```
## New block on a new line
We never write multiple statements on the same source line, even for short
if() conditions.
```c
if(a)
return TRUE;
else if(b)
return FALSE;
```
and NEVER:
```c
if(a) return TRUE;
else if(b) return FALSE;
```
## Space around operators
Please use spaces on both sides of operators in C expressions. Postfix **(),
[], ->, ., ++, --** and Unary **+, -, !, ~, &** operators excluded they should
have no space.
Examples:
```c
bla = func();
who = name[0];
age += 1;
true = !false;
size += -2 + 3 * (a + b);
ptr->member = a++;
struct.field = b--;
ptr = &address;
contents = *pointer;
complement = ~bits;
empty = (!*string) ? TRUE : FALSE;
```
## No parentheses for return values
We use the 'return' statement without extra parentheses around the value:
```c
int works(void)
{
return TRUE;
}
```
## Parentheses for sizeof arguments
When using the sizeof operator in code, we prefer it to be written with
parentheses around its argument:
```c
int size = sizeof(int);
```
## Column alignment
Some statements cannot be completed on a single line because the line would be
too long, the statement too hard to read, or due to other style guidelines
above. In such a case the statement will span multiple lines.
If a continuation line is part of an expression or sub-expression then you
should align on the appropriate column so that it's easy to tell what part of
the statement it is. Operators should not start continuation lines. In other
cases follow the 2-space indent guideline. Here are some examples from
libcurl:
```c
if(Curl_pipeline_wanted(handle->multi, CURLPIPE_HTTP1) &&
(handle->set.httpversion != CURL_HTTP_VERSION_1_0) &&
(handle->set.httpreq == HTTPREQ_GET ||
handle->set.httpreq == HTTPREQ_HEAD))
/* did not ask for HTTP/1.0 and a GET or HEAD */
return TRUE;
```
If no parenthesis, use the default indent:
```c
data->set.http_disable_hostname_check_before_authentication =
(0 != va_arg(param, long)) ? TRUE : FALSE;
```
Function invoke with an open parenthesis:
```c
if(option) {
result = parse_login_details(option, strlen(option),
(userp ? &user : NULL),
(passwdp ? &passwd : NULL),
NULL);
}
```
Align with the "current open" parenthesis:
```c
DEBUGF(infof(data, "Curl_pp_readresp_ %d bytes of trailing "
"server response left\n",
(int)clipamount));
```
## Platform dependent code
Use **#ifdef HAVE_FEATURE** to do conditional code. We avoid checking for
particular operating systems or hardware in the #ifdef lines. The HAVE_FEATURE
shall be generated by the configure script for unix-like systems and they are
hard-coded in the `config-[system].h` files for the others.
We also encourage use of macros/functions that possibly are empty or defined
to constants when libcurl is built without that feature, to make the code
seamless. Like this example where the **magic()** function works differently
depending on a build-time conditional:
```c
#ifdef HAVE_MAGIC
void magic(int a)
{
return a + 2;
}
#else
#define magic(x) 1
#endif
int content = magic(3);
```
## No typedefed structs
Use structs by all means, but do not typedef them. Use the `struct name` way
of identifying them:
```c
struct something {
void *valid;
size_t way_to_write;
};
struct something instance;
```
**Not okay**:
```c
typedef struct {
void *wrong;
size_t way_to_write;
} something;
something instance;
```

@ -1,127 +0,0 @@
# curl connection filters
Connection filters is a design in the internals of curl, not visible in its public API. They were added
in curl v7.xx.x. This document describes the concepts, its high level implementation and the motivations.
## Filters
A "connection filter" is a piece of code that is responsible for handling a range of operations
of curl's connections: reading, writing, waiting on external events, connecting and closing down - to name the most important ones.
The most important feat of connection filters is that they can be stacked on top of each other (or "chained" if you prefer that metaphor). In the common scenario that you want to retrieve a `https:` url with curl, you need 2 basic things to send the request and get the response: a TCP connection, represented by a `socket` and a SSL instance en- and decrypt over that socket. You write your request to the SSL instance, which encrypts and writes that data to the socket, which then sends the bytes over the network.
With connection filters, curl's internal setup will look something like this (cf for connection filter):
```
Curl_easy *data connectdata *conn cf-ssl cf-socket
+----------------+ +-----------------+ +-------+ +--------+
|https://curl.se/|----> | properties |----> | keys |---> | socket |--> OS --> network
+----------------+ +-----------------+ +-------+ +--------+
Curl_write(data, buffer)
--> Curl_cfilter_write(data, data->conn, buffer)
---> conn->filter->write(conn->filter, data, buffer)
```
While connection filters all do different things, they look the same from the "outside". The code in `data` and `conn` does not really know **which** filters are installed. `conn` just writes into the first filter, whatever that is.
Same is true for filters. Each filter has a pointer to the `next` filter. When SSL has encrypted the data, it does not write to a socket, it writes to the next filter. If that is indeed a socket, or a file, or an HTTP/2 connection is of no concern to the SSL filter.
And this allows the stacking, as in:
```
Direct:
http://localhost/ conn -> cf-socket
https://curl.se/ conn -> cf-ssl -> cf-socket
Via http proxy tunnel:
http://localhost/ conn -> cf-http-proxy -> cf-socket
https://curl.se/ conn -> cf-ssl -> cf-http-proxy -> cf-socket
Via https proxy tunnel:
http://localhost/ conn -> cf-http-proxy -> cf-ssl -> cf-socket
https://curl.se/ conn -> cf-ssl -> cf-http-proxy -> cf-ssl -> cf-socket
Via http proxy tunnel via SOCKS proxy:
http://localhost/ conn -> cf-http-proxy -> cf-socks -> cf-socket
```
### Connecting/Closing
Before `Curl_easy` can send the request, the connection needs to be established. This means that all connection filters have done, whatever they need to do: waiting for the socket to be connected, doing the TLS handshake, performing the HTTP tunnel request, etc. This has to be done in reverse order: the last filter has to do its connect first, then the one above can start, etc.
Each filter does in principle the following:
```
static CURLcode
myfilter_cf_connect(struct Curl_cfilter *cf,
struct Curl_easy *data,
bool *done)
{
CURLcode result;
if(cf->connected) { /* we and all below are done */
*done = TRUE;
return CURLE_OK;
}
/* Let the filters below connect */
result = cf->next->cft->connect(cf->next, data, blocking, done);
if(result || !*done)
return result; /* below errored/not finished yet */
/* MYFILTER CONNECT THINGS */ /* below connected, do out thing */
*done = cf->connected = TRUE; /* done, remember, return */
return CURLE_OK;
}
```
Closing a connection then works similar. The `conn` tells the first filter to close. Contrary to connecting,
the filter does its own things first, before telling the next filter to close.
### Efficiency
There are two things curl is concerned about: efficient memory use and fast transfers.
The memory footprint of a filter is relatively small:
```
struct Curl_cfilter {
const struct Curl_cftype *cft; /* the type providing implementation */
struct Curl_cfilter *next; /* next filter in chain */
void *ctx; /* filter type specific settings */
struct connectdata *conn; /* the connection this filter belongs to */
int sockindex; /* TODO: like to get rid off this */
BIT(connected); /* != 0 iff this filter is connected */
};
```
The filter type `cft` is a singleton, one static struct for each type of filter. The `ctx` is where a filter will hold its specific data. That varies by filter type. An http-proxy filter will keep the ongoing state of the CONNECT here, but free it after its has been established. The SSL filter will keep the `SSL*` (if OpenSSL is used) here until the connection is closed. So, this varies.
`conn` is a reference to the connection this filter belongs to, so nothing extra besides the pointer itself.
Several things, that before were kept in `struct connectdata`, will now go into the `filter->ctx` *when needed*. So, the memory footprint for connections that do *not* use an http proxy, or socks, or https will be lower.
As to transfer efficiency, writing and reading through a filter comes at near zero cost *if the filter does not transform the data*. An http proxy or socks filter, once it is connected, will just pass the calls through. Those filters implementations will look like this:
```
ssize_t Curl_cf_def_send(struct Curl_cfilter *cf, struct Curl_easy *data,
const void *buf, size_t len, CURLcode *err)
{
return cf->next->cft->do_send(cf->next, data, buf, len, err);
}
```
The `recv` implementation is equivalent.
## Filter Types
The (currently) existing filter types are: SOCKET, SOCKET-ACCEPT, SSL, HTTP-PROXY and SOCKS-PROXY. Vital to establishing and read/writing a connection. But filters are also a good way to implement tasks for *managing* a connection:
* **Statistics**: a filter that counts the number of bytes sent/received. Place one in front of SOCKET and one higher up and get the number of raw and "easy" bytes transferred. They may track the speed as well, or number of partial writes, etc.
* **Timeout**: enforce timeouts, e.g. fail if a connection cannot be established in a certain amount of time.
* **Progress**: report progress on a connection.
* **Pacing**: limit read/write rates.
* **Testing**: simulate network condition or failures.
As you see, filters are a good way to add functionality to curl's internal handling of transfers without impact on other code.
## Easy Filters?
Some things that curl needs to manage are not directly tied to a specific connection but the property of the `Curl_easy` handle, e.g. a particular transfer. When using HTTP/2 or HTTP/3, many transfers can use the same connection. If one wants to monitor of the transfer itself or restricting its speed alone, a connection filter is not the right place to do this.
So we might add "easy filters" one day. Who knows?

@ -1,319 +0,0 @@
# Contributing to the curl project
This document is intended to offer guidelines on how to best contribute to the
curl project. This concerns new features as well as corrections to existing
flaws or bugs.
## Join the Community
Skip over to [https://curl.se/mail/](https://curl.se/mail/) and join
the appropriate mailing list(s). Read up on details before you post
questions. Read this file before you start sending patches. We prefer
questions sent to and discussions being held on the mailing list(s), not sent
to individuals.
Before posting to one of the curl mailing lists, please read up on the
[mailing list etiquette](https://curl.se/mail/etiquette.html).
We also hang out on IRC in #curl on libera.chat
If you are at all interested in the code side of things, consider clicking
'watch' on the [curl repo on GitHub](https://github.com/curl/curl) to be
notified of pull requests and new issues posted there.
## License and copyright
When contributing with code, you agree to put your changes and new code under
the same license curl and libcurl is already using unless stated and agreed
otherwise.
If you add a larger piece of code, you can opt to make that file or set of
files to use a different license as long as they do not enforce any changes to
the rest of the package and they make sense. Such "separate parts" can not be
GPL licensed (as we do not want copyleft to affect users of libcurl) but they
must use "GPL compatible" licenses (as we want to allow users to use libcurl
properly in GPL licensed environments).
When changing existing source code, you do not alter the copyright of the
original file(s). The copyright will still be owned by the original creator(s)
or those who have been assigned copyright by the original author(s).
By submitting a patch to the curl project, you are assumed to have the right
to the code and to be allowed by your employer or whatever to hand over that
patch/code to us. We will credit you for your changes as far as possible, to
give credit but also to keep a trace back to who made what changes. Please
always provide us with your full real name when contributing,
## What To Read
Source code, the man pages, the [INTERNALS
document](https://curl.se/dev/internals.html),
[TODO](https://curl.se/docs/todo.html),
[KNOWN_BUGS](https://curl.se/docs/knownbugs.html) and the [most recent
changes](https://curl.se/dev/sourceactivity.html) in git. Just lurking on
the [curl-library mailing
list](https://curl.se/mail/list.cgi?list=curl-library) will give you a
lot of insights on what's going on right now. Asking there is a good idea too.
## Write a good patch
### Follow code style
When writing C code, follow the
[CODE_STYLE](https://curl.se/dev/code-style.html) already established in
the project. Consistent style makes code easier to read and mistakes less
likely to happen. Run `make checksrc` before you submit anything, to make sure
you follow the basic style. That script does not verify everything, but if it
complains you know you have work to do.
### Non-clobbering All Over
When you write new functionality or fix bugs, it is important that you do not
fiddle all over the source files and functions. Remember that it is likely
that other people have done changes in the same source files as you have and
possibly even in the same functions. If you bring completely new
functionality, try writing it in a new source file. If you fix bugs, try to
fix one bug at a time and send them as separate patches.
### Write Separate Changes
It is annoying when you get a huge patch from someone that is said to fix 511
odd problems, but discussions and opinions do not agree with 510 of them - or
509 of them were already fixed in a different way. Then the person merging
this change needs to extract the single interesting patch from somewhere
within the huge pile of source, and that creates a lot of extra work.
Preferably, each fix that corrects a problem should be in its own patch/commit
with its own description/commit message stating exactly what they correct so
that all changes can be selectively applied by the maintainer or other
interested parties.
Also, separate changes enable bisecting much better for tracking problems
and regression in the future.
### Patch Against Recent Sources
Please try to get the latest available sources to make your patches against.
It makes the lives of the developers so much easier. The best is if you get
the most up-to-date sources from the git repository, but the latest release
archive is quite OK as well.
### Documentation
Writing docs is dead boring and one of the big problems with many open source
projects. But someone's gotta do it. It makes things a lot easier if you
submit a small description of your fix or your new features with every
contribution so that it can be swiftly added to the package documentation.
The documentation is always made in man pages (nroff formatted) or plain
ASCII files. All HTML files on the website and in the release archives are
generated from the nroff/ASCII versions.
### Test Cases
Since the introduction of the test suite, we can quickly verify that the main
features are working as they are supposed to. To maintain this situation and
improve it, all new features and functions that are added need to be tested
in the test suite. Every feature that is added should get at least one valid
test case that verifies that it works as documented. If every submitter also
posts a few test cases, it will not end up as a heavy burden on a single person!
If you do not have test cases or perhaps you have done something that is hard
to write tests for, do explain exactly how you have otherwise tested and
verified your changes.
## Submit Your Changes
### How to get your changes into the main sources
Ideally you file a [pull request on
GitHub](https://github.com/curl/curl/pulls), but you can also send your plain
patch to [the curl-library mailing
list](https://curl.se/mail/list.cgi?list=curl-library).
If you opt to post a patch on the mailing list, chances are someone will
convert it into a pull request for you, to have the CI jobs verify it proper
before it can be merged. Be prepared that some feedback on the proposed change
might then come on GitHub.
Your change will be reviewed and discussed and you will be expected to correct
flaws pointed out and update accordingly, or the change risks stalling and
eventually just getting deleted without action. As a submitter of a change,
you are the owner of that change until it has been merged.
Respond on the list or on GitHub about the change and answer questions and/or
fix nits/flaws. This is important. We will take lack of replies as a sign that
you are not anxious to get your patch accepted and we tend to simply drop such
changes.
### About pull requests
With GitHub it is easy to send a [pull
request](https://github.com/curl/curl/pulls) to the curl project to have
changes merged.
We strongly prefer pull requests to mailed patches, as it makes it a proper
git commit that is easy to merge and they are easy to track and not that easy
to lose in the flood of many emails, like they sometimes do on the mailing
lists.
Every pull request submitted will automatically be tested in several different
ways. [See the CI document for more
information](https://github.com/curl/curl/blob/master/tests/CI.md).
Sometimes the tests fail due to a dependency service temporarily being offline
or otherwise unavailable, e.g. package downloads. In this case you can just
try to update your pull requests to rerun the tests later as described below.
You can update your pull requests by pushing new commits or force-pushing
changes to existing commits. Force-pushing an amended commit without any
actual content changed also allows you to retrigger the tests for that commit.
When you adjust your pull requests after review, consider squashing the
commits so that we can review the full updated version more easily.
A pull request sent to the project might get labeled `needs-votes` by a
project maintainer. This label means that in addition to meeting all other
checks and qualifications this pull request must also receive more "votes" of
user support. More signs that people want this to happen. It could be in the
form of messages saying so, or thumbs-up reactions on GitHub.
### Making quality changes
Make the patch against as recent source versions as possible.
If you have followed the tips in this document and your patch still has not
been incorporated or responded to after some weeks, consider resubmitting it
to the list or better yet: change it to a pull request.
### Commit messages
A short guide to how to write git commit messages in the curl project.
---- start ----
[area]: [short line describing the main effect]
-- empty line --
[full description, no wider than 72 columns that describes as much as
possible as to why this change is made, and possibly what things
it fixes and everything else that is related, with unwieldy URLs replaced
with references like [0], [1], etc.]
-- empty line --
[[0] URL - Reference to a URL in the description, almost like Markdown;
the last numbered reference is followed by an -- empty line -- ]
[Follow-up to {shorthash} - if this fixes or continues a previous commit;
add a Ref: that commit's PR or issue if it's not a small, obvious fix;
followed by an -- empty line -- ]
[Bug: URL to the source of the report or more related discussion; use Fixes
for GitHub issues instead when that is appropriate]
[Approved-by: John Doe - credit someone who approved the PR; if you are
committing this for someone else using --author=... you don't need this
as you are implicitly approving it by committing]
[Authored-by: John Doe - credit the original author of the code; only use
this if you can't use "git commit --author=..."]
{Signed-off-by: John Doe - we don't use this, but don't bother removing it]
[whatever-else-by: credit all helpers, finders, doers; try to use one of
the following keywords if at all possible, for consistency:
Acked-by:, Assisted-by:, Co-authored-by:, Found-by:, Reported-by:,
Reviewed-by:, Suggested-by:, Tested-by:]
[Ref: #1234 - if this is related to a GitHub issue or PR, possibly one that
has already been closed]
[Ref: URL to more information about the commit; use Bug: instead for
a reference to a bug on another bug tracker]
[Fixes #1234 - if this closes a GitHub issue; GitHub will actually
close the issue once this commit is merged]
[Closes #1234 - if this closes a GitHub PR; GitHub will actually
close the PR once this commit is merged]
---- stop ----
The first line is a succinct description of the change:
- use the imperative, present tense: "change" not "changed" nor "changes"
- do not capitalize the first letter
- no period (.) at the end
The `[area]` in the first line can be `http2`, `cookies`, `openssl` or
similar. There's no fixed list to select from but using the same "area" as
other related changes could make sense.
Do not forget to use commit --author=... if you commit someone else's work, and
make sure that you have your own user and email setup correctly in git before
you commit.
Add whichever header lines as appropriate, with one line per person if more
than one person was involved. There's no need to credit yourself unless you are
using --author=... which hides your identity. Don't include people's e-mail
addresses in headers to avoid spam, unless they're already public from a
previous commit; saying `{userid} on github` is OK.
### Write Access to git Repository
If you are a frequent contributor, you may be given push access to the git
repository and then you will be able to push your changes straight into the git
repo instead of sending changes as pull requests or by mail as patches.
Just ask if this is what you would want. You will be required to have posted
several high quality patches first, before you can be granted push access.
### How To Make a Patch with git
You need to first checkout the repository:
git clone https://github.com/curl/curl.git
You then proceed and edit all the files you like and you commit them to your
local repository:
git commit [file]
As usual, group your commits so that you commit all changes at once that
constitute a logical change.
Once you have done all your commits and you are happy with what you see, you
can make patches out of your changes that are suitable for mailing:
git format-patch remotes/origin/master
This creates files in your local directory named `NNNN-[name].patch` for each
commit.
Now send those patches off to the curl-library list. You can of course opt to
do that with the 'git send-email' command.
### How To Make a Patch without git
Keep a copy of the unmodified curl sources. Make your changes in a separate
source tree. When you think you have something that you want to offer the
curl community, use GNU diff to generate patches.
If you have modified a single file, try something like:
diff -u unmodified-file.c my-changed-one.c > my-fixes.diff
If you have modified several files, possibly in different directories, you
can use diff recursively:
diff -ur curl-original-dir curl-modified-sources-dir > my-fixes.diff
The GNU diff and GNU patch tools exist for virtually all platforms, including
all kinds of Unixes and Windows.
### Useful resources
- [Webinar on getting code into cURL](https://www.youtube.com/watch?v=QmZ3W1d6LQI)
## Update copyright and license information
There is a CI job called **REUSE compliance / check** that will run on every
pull request and commit to verify that the *REUSE state* of all files are
still fine.
This means that all files need to have their license and copyright information
clearly stated. Ideally by having the standard curl source code header, with
an accurate copyright year range and the SPDX-License-Identifier included. If
the header does not work, you can use a smaller header or add the information
for a specific file to the `.reuse/dep5` file.
We update copyright year ranges to end on the year of the most recent change
of the individual file.
You can manually verify the copyright and compliance status by running the
`./scripts/copyright.pl` script in the root of the git repository.

@ -1,140 +0,0 @@
# Code defines to disable features and protocols
## `CURL_DISABLE_ALTSVC`
Disable support for Alt-Svc: HTTP headers.
## `CURL_DISABLE_COOKIES`
Disable support for HTTP cookies.
## `CURL_DISABLE_CRYPTO_AUTH`
Disable support for authentication methods using crypto.
## `CURL_DISABLE_DICT`
Disable the DICT protocol
## `CURL_DISABLE_DOH`
Disable DNS-over-HTTPS
## `CURL_DISABLE_FILE`
Disable the FILE protocol
## `CURL_DISABLE_FTP`
Disable the FTP (and FTPS) protocol
## `CURL_DISABLE_GETOPTIONS`
Disable the `curl_easy_options` API calls that lets users get information
about existing options to `curl_easy_setopt`.
## `CURL_DISABLE_GOPHER`
Disable the GOPHER protocol.
## `CURL_DISABLE_HEADERS_API`
Disable the HTTP header API.
## `CURL_DISABLE_HSTS`
Disable the HTTP Strict Transport Security support.
## `CURL_DISABLE_HTTP`
Disable the HTTP(S) protocols. Note that this then also disable HTTP proxy
support.
## `CURL_DISABLE_HTTP_AUTH`
Disable support for all HTTP authentication methods.
## `CURL_DISABLE_IMAP`
Disable the IMAP(S) protocols.
## `CURL_DISABLE_LDAP`
Disable the LDAP(S) protocols.
## `CURL_DISABLE_LDAPS`
Disable the LDAPS protocol.
## `CURL_DISABLE_LIBCURL_OPTION`
Disable the --libcurl option from the curl tool.
## `CURL_DISABLE_MIME`
Disable MIME support.
## `CURL_DISABLE_MQTT`
Disable MQTT support.
## `CURL_DISABLE_NETRC`
Disable the netrc parser.
## `CURL_DISABLE_NTLM`
Disable support for NTLM.
## `CURL_DISABLE_OPENSSL_AUTO_LOAD_CONFIG`
Disable the auto load config support in the OpenSSL backend.
## `CURL_DISABLE_PARSEDATE`
Disable date parsing
## `CURL_DISABLE_POP3`
Disable the POP3 protocol
## `CURL_DISABLE_PROGRESS_METER`
Disable the built-in progress meter
## `CURL_DISABLE_PROXY`
Disable support for proxies
## `CURL_DISABLE_RTSP`
Disable the RTSP protocol.
## `CURL_DISABLE_SHUFFLE_DNS`
Disable the shuffle DNS feature
## `CURL_DISABLE_SMB`
Disable the SMB(S) protocols
## `CURL_DISABLE_SMTP`
Disable the SMTP(S) protocols
## `CURL_DISABLE_SOCKETPAIR`
Disable the use of `socketpair()` internally to allow waking up and canceling
`curl_multi_poll()`.
## `CURL_DISABLE_TELNET`
Disable the TELNET protocol
## `CURL_DISABLE_TFTP`
Disable the TFTP protocol
## `CURL_DISABLE_VERBOSE_STRINGS`
Disable verbose strings and error messages.

@ -1,71 +0,0 @@
# Items to be removed from future curl releases
If any of these deprecated features is a cause for concern for you, please
email the
[curl-library mailing list](https://lists.haxx.se/listinfo/curl-library)
as soon as possible and explain to us why this is a problem for you and
how your use case cannot be satisfied properly using a workaround.
## NSS
We remove support for building curl with the NSS TLS library in August 2023.
- There are few users left who use curl+NSS
- NSS has few users outside of curl as well (primarily Firefox)
- NSS is harder than ever to find documentation for
- NSS was always "best" used with Red Hat Linux when they provided additional
features on top of the regular NSS that is not shipped by the vanilla library
Starting in 7.82.0, building curl to use NSS configure requires the additional
flag `--with-nss-deprecated` in an attempt to highlight these plans.
## gskit
We remove support for building curl with the gskit TLS library in August 2023.
- This is a niche TLS library, only running on some IBM systems
- no regular curl contributors use this backend
- no CI builds use or verify this backend
- gskit, or the curl adaption for it, lacks many modern TLS features making it
an inferior solution
- build breakages in this code take weeks or more to get detected
- fixing gskit code is mostly done "flying blind"
## mingw v1
We remove support for building curl with the original legacy mingw version 1
in September 2023.
During the deprecation period you can enable the support with the configure
option `--with-mingw1-deprecated`.
mingw version 1 is old and deprecated software. There are much better and
still support build environments to use to build curl and other software. For
example [MinGW-w64](https://www.mingw-w64.org/).
## space-separated `NOPROXY` patterns
When specifying patterns/domain names for curl that should *not* go through a
proxy, the curl tool features the `--noproxy` command line option and the
library supports the `NO_PROXY` environment variable and the `CURLOPT_NOPROXY`
libcurl option.
They all set the same list of patterns. This list is documented to be a set of
**comma-separated** names, but can also be provided separated with just
space. The ability to just use spaces for this has never been documented but
some users may still have come to rely on this.
Several other tools and utilities also parse the `NO_PROXY` environment
variable but do not consider a space to be a valid separator. Using spaces for
separator is probably less portable and might cause more friction than commas
do. Users should use commas for this for greater portability.
curl will remove the support for space-separated names in July 2024.
## past removals
- Pipelining
- axTLS
- PolarSSL
- NPN
- Support for systems without 64 bit data types

@ -1,128 +0,0 @@
# dynbuf
This is the internal module for creating and handling "dynamic buffers". This
means buffers that can be appended to, dynamically and grow to adapt.
There will always be a terminating zero put at the end of the dynamic buffer.
The `struct dynbuf` is used to hold data for each instance of a dynamic
buffer. The members of that struct **MUST NOT** be accessed or modified
without using the dedicated dynbuf API.
## `Curl_dyn_init`
```c
void Curl_dyn_init(struct dynbuf *s, size_t toobig);
```
This initializes a struct to use for dynbuf and it cannot fail. The `toobig`
value **must** be set to the maximum size we allow this buffer instance to
grow to. The functions below will return `CURLE_OUT_OF_MEMORY` when hitting
this limit.
## `Curl_dyn_free`
```c
void Curl_dyn_free(struct dynbuf *s);
```
Free the associated memory and clean up. After a free, the `dynbuf` struct can
be re-used to start appending new data to.
## `Curl_dyn_addn`
```c
CURLcode Curl_dyn_addn(struct dynbuf *s, const void *mem, size_t len);
```
Append arbitrary data of a given length to the end of the buffer.
If this function fails it calls `Curl_dyn_free` on `dynbuf`.
## `Curl_dyn_add`
```c
CURLcode Curl_dyn_add(struct dynbuf *s, const char *str);
```
Append a C string to the end of the buffer.
If this function fails it calls `Curl_dyn_free` on `dynbuf`.
## `Curl_dyn_addf`
```c
CURLcode Curl_dyn_addf(struct dynbuf *s, const char *fmt, ...);
```
Append a `printf()`-style string to the end of the buffer.
If this function fails it calls `Curl_dyn_free` on `dynbuf`.
## `Curl_dyn_vaddf`
```c
CURLcode Curl_dyn_vaddf(struct dynbuf *s, const char *fmt, va_list ap);
```
Append a `vprintf()`-style string to the end of the buffer.
If this function fails it calls `Curl_dyn_free` on `dynbuf`.
## `Curl_dyn_reset`
```c
void Curl_dyn_reset(struct dynbuf *s);
```
Reset the buffer length, but leave the allocation.
## `Curl_dyn_tail`
```c
CURLcode Curl_dyn_tail(struct dynbuf *s, size_t length);
```
Keep `length` bytes of the buffer tail (the last `length` bytes of the
buffer). The rest of the buffer is dropped. The specified `length` must not be
larger than the buffer length. To instead keep the leading part, see
`Curl_dyn_setlen()`.
## `Curl_dyn_ptr`
```c
char *Curl_dyn_ptr(const struct dynbuf *s);
```
Returns a `char *` to the buffer if it has a length, otherwise may return
NULL. Since the buffer may be reallocated, this pointer should not be trusted
or used anymore after the next buffer manipulation call.
## `Curl_dyn_uptr`
```c
unsigned char *Curl_dyn_uptr(const struct dynbuf *s);
```
Returns an `unsigned char *` to the buffer if it has a length, otherwise may
return NULL. Since the buffer may be reallocated, this pointer should not be
trusted or used anymore after the next buffer manipulation call.
## `Curl_dyn_len`
```c
size_t Curl_dyn_len(const struct dynbuf *s);
```
Returns the length of the buffer in bytes. Does not include the terminating
zero byte.
## `Curl_dyn_setlen`
```c
CURLcode Curl_dyn_setlen(struct dynbuf *s, size_t len);
```
Sets the new shorter length of the buffer in number of bytes. Keeps the
leftmost set number of bytes, discards the rest. To instead keep the tail part
of the buffer, see `Curl_dyn_tail()`.

@ -1,67 +0,0 @@
# How to determine if an early patch release is warranted
In the curl project we do releases every 8 weeks. Unless we break the cycle
and do an early patch release.
We do frequent releases partly to always have the next release "not too far
away".
## Bugfix
During the release cycle, and especially in the beginning of a new cycle (the
so-called "cool down" period), there are times when a bug is reported and
after it has been subsequently fixed correctly, the question might be asked:
is this bug and associated fix important enough for an early patch release?
The question can only be properly asked when a fix has been created and landed
in the git master branch.
## Early release
An early patch release means that we ship a new, complete and full release
called `major.minor.patch` where the `patch` part is increased by one since
the previous release. A curl release is a curl release. There is no small or
big and we never release just a patch. There is only "release".
## Questions to ask
- Is there a security advisory rated high or critical?
- Is there a data corruption bug?
- Did the bug cause an API/ABI breakage?
- Will the problem annoy a significant share of the user population?
If the answer is yes to one or more of the above, an early release might be
warranted.
More questions to ask ourselves when doing the assessment if the answers to
the three ones above are all 'no'.
- Does the bug cause curl to prematurely terminate?
- How common is the affected buggy option/feature/protocol/platform to get
used?
- How large is the estimated impacted user base?
- Does the bug block something crucial for applications or other adoption of
curl "out there" ?
- Does the bug cause problems for curl developers or others on "the curl
team" ?
- Is the bug limited to the curl tool only? That might have a smaller impact
than a bug also present in libcurl.
- Is there a (decent) workaround?
- Is it a regression? Is the bug introduced in this release?
- Can the bug be fixed "easily" by applying a patch?
- Does the bug break the build? Most users don't build curl themselves.
- How long is it until the already scheduled next release?
- Can affected users safely rather revert to a former release until the next
scheduled release?
- Is it a performance regression with no functionality side-effects? If so it
has to be substantial.
## If an early release is deemed necessary
Unless done for security or similarly important reasons, an early release
should not be done within a week of the previous release.
This, to enable us to collect and bundle more fixes into the same release to
make the release more worthwhile for everyone and to allow more time for fixes
to settle and things to get tested. Getting a release in shape and done in
style is work that should not be rushed.

@ -1,24 +0,0 @@
# Experimental
Some features and functionality in curl and libcurl are considered
**EXPERIMENTAL**.
Experimental support in curl means:
1. Experimental features are provided to allow users to try them out and
provide feedback on functionality and API etc before they ship and get
"carved in stone".
2. You must enable the feature when invoking configure as otherwise curl will
not be built with the feature present.
3. We strongly advise against using this feature in production.
4. **We reserve the right to change behavior** of the feature without sticking
to our API/ABI rules as we do for regular features, as long as it is marked
experimental.
5. Experimental features are clearly marked so in documentation. Beware.
## Experimental features right now
- The Hyper HTTP backend
- HTTP/3 support and options
- The rustls backend
- WebSocket

File diff suppressed because it is too large Load Diff

@ -1,219 +0,0 @@
# Features -- what curl can do
## curl tool
- config file support
- multiple URLs in a single command line
- range "globbing" support: [0-13], {one,two,three}
- multiple file upload on a single command line
- custom maximum transfer rate
- redirect stderr
- parallel transfers
## libcurl
- full URL syntax with no length limit
- custom maximum download time
- custom least download speed acceptable
- custom output result after completion
- guesses protocol from host name unless specified
- uses .netrc
- progress bar with time statistics while downloading
- "standard" proxy environment variables support
- compiles on win32 (reported builds on 70+ operating systems)
- selectable network interface for outgoing traffic
- IPv6 support on Unix and Windows
- happy eyeballs dual-stack connects
- persistent connections
- SOCKS 4 + 5 support, with or without local name resolving
- supports user name and password in proxy environment variables
- operations through HTTP proxy "tunnel" (using CONNECT)
- replaceable memory functions (malloc, free, realloc, etc)
- asynchronous name resolving (6)
- both a push and a pull style interface
- international domain names (10)
## HTTP
- HTTP/0.9 responses are optionally accepted
- HTTP/1.0
- HTTP/1.1
- HTTP/2, including multiplexing and server push (5)
- GET
- PUT
- HEAD
- POST
- multipart formpost (RFC1867-style)
- authentication: Basic, Digest, NTLM (9) and Negotiate (SPNEGO) (3)
to server and proxy
- resume (both GET and PUT)
- follow redirects
- maximum amount of redirects to follow
- custom HTTP request
- cookie get/send fully parsed
- reads/writes the Netscape cookie file format
- custom headers (replace/remove internally generated headers)
- custom user-agent string
- custom referrer string
- range
- proxy authentication
- time conditions
- via HTTP proxy, HTTPS proxy or SOCKS proxy
- retrieve file modification date
- Content-Encoding support for deflate and gzip
- "Transfer-Encoding: chunked" support in uploads
- automatic data compression (11)
## HTTPS (1)
- (all the HTTP features)
- HTTP/3 experimental support
- using client certificates
- verify server certificate
- via HTTP proxy, HTTPS proxy or SOCKS proxy
- select desired encryption
- select usage of a specific SSL version
## FTP
- download
- authentication
- Kerberos 5 (12)
- active/passive using PORT, EPRT, PASV or EPSV
- single file size information (compare to HTTP HEAD)
- 'type=' URL support
- dir listing
- dir listing names-only
- upload
- upload append
- upload via http-proxy as HTTP PUT
- download resume
- upload resume
- custom ftp commands (before and/or after the transfer)
- simple "range" support
- via HTTP proxy, HTTPS proxy or SOCKS proxy
- all operations can be tunneled through proxy
- customizable to retrieve file modification date
- no dir depth limit
## FTPS (1)
- implicit `ftps://` support that use SSL on both connections
- explicit "AUTH TLS" and "AUTH SSL" usage to "upgrade" plain `ftp://`
connection to use SSL for both or one of the connections
## SCP (8)
- both password and public key auth
## SFTP (7)
- both password and public key auth
- with custom commands sent before/after the transfer
## TFTP
- download
- upload
## TELNET
- connection negotiation
- custom telnet options
- stdin/stdout I/O
## LDAP (2)
- full LDAP URL support
## DICT
- extended DICT URL support
## FILE
- URL support
- upload
- resume
## SMB
- SMBv1 over TCP and SSL
- download
- upload
- authentication with NTLMv1
## SMTP
- authentication: Plain, Login, CRAM-MD5, Digest-MD5, NTLM (9), Kerberos 5
(4) and External.
- send emails
- mail from support
- mail size support
- mail auth support for trusted server-to-server relaying
- multiple recipients
- via http-proxy
## SMTPS (1)
- implicit `smtps://` support
- explicit "STARTTLS" usage to "upgrade" plain `smtp://` connections to use SSL
- via http-proxy
## POP3
- authentication: Clear Text, APOP and SASL
- SASL based authentication: Plain, Login, CRAM-MD5, Digest-MD5, NTLM (9),
Kerberos 5 (4) and External.
- list emails
- retrieve emails
- enhanced command support for: CAPA, DELE, TOP, STAT, UIDL and NOOP via
custom requests
- via http-proxy
## POP3S (1)
- implicit `pop3s://` support
- explicit `STLS` usage to "upgrade" plain `pop3://` connections to use SSL
- via http-proxy
## IMAP
- authentication: Clear Text and SASL
- SASL based authentication: Plain, Login, CRAM-MD5, Digest-MD5, NTLM (9),
Kerberos 5 (4) and External.
- list the folders of a mailbox
- select a mailbox with support for verifying the `UIDVALIDITY`
- fetch emails with support for specifying the UID and SECTION
- upload emails via the append command
- enhanced command support for: EXAMINE, CREATE, DELETE, RENAME, STATUS,
STORE, COPY and UID via custom requests
- via http-proxy
## IMAPS (1)
- implicit `imaps://` support
- explicit "STARTTLS" usage to "upgrade" plain `imap://` connections to use SSL
- via http-proxy
## MQTT
- Subscribe to and publish topics using URL scheme `mqtt://broker/topic`
## Footnotes
1. requires a TLS library
2. requires OpenLDAP or WinLDAP
3. requires a GSS-API implementation (such as Heimdal or MIT Kerberos) or
SSPI (native Windows)
4. requires a GSS-API implementation, however, only Windows SSPI is
currently supported
5. requires nghttp2
6. requires c-ares
7. requires libssh2, libssh or wolfSSH
8. requires libssh2 or libssh
9. requires OpenSSL, GnuTLS, mbedTLS, NSS, Secure Transport or SSPI
(native Windows)
10. requires libidn2 or Windows
11. requires libz, brotli and/or zstd
12. requires a GSS-API implementation (such as Heimdal or MIT Kerberos)

@ -1,182 +0,0 @@
# Decision making in the curl project
A rough guide to how we make decisions and who does what.
## BDFL
This project was started by and has to some extent been pushed forward over
the years with Daniel Stenberg as the driving force. It matches a standard
BDFL (Benevolent Dictator For Life) style project.
This setup has been used due to convenience and the fact that it has worked
fine this far. It is not because someone thinks of it as a superior project
leadership model. It will also only continue working as long as Daniel manages
to listen in to what the project and the general user population wants and
expects from us.
## Legal entity
There is no legal entity. The curl project is just a bunch of people scattered
around the globe with the common goal to produce source code that creates
great products. We are not part of any umbrella organization and we are not
located in any specific country. We are totally independent.
The copyrights in the project are owned by the individuals and organizations
that wrote those parts of the code.
## Decisions
The curl project is not a democracy, but everyone is entitled to state their
opinion and may argue for their sake within the community.
All and any changes that have been done or will be done are eligible to bring
up for discussion, to object to or to praise. Ideally, we find consensus for
the appropriate way forward in any given situation or challenge.
If there is no obvious consensus, a maintainer who's knowledgeable in the
specific area will take an "executive" decision that they think is the right
for the project.
## Donations
Donating plain money to curl is best done to curl's [Open Collective
fund](https://opencollective.com/curl). Open Collective is a US based
non-profit organization that holds on to funds for us. This fund is then used
for paying the curl security bug bounties, to reimburse project related
expenses etc.
Donations to the project can also come in the form of server hosting, providing
services and paying for people to work on curl related code etc. Usually, such
donations are services paid for directly by the sponsors.
We grade sponsors in a few different levels and if they meet the criteria,
they can be mentioned on the Sponsors page on the curl website.
## Commercial Support
The curl project does not do or offer commercial support. It only hosts
mailing lists, runs bug trackers etc to facilitate communication and work.
However, Daniel works for wolfSSL and we offer commercial curl support there.
# Key roles
## User
Someone who uses or has used curl or libcurl.
## Contributor
Someone who has helped the curl project, who has contributed to bring it
forward. Contributing could be to provide advice, debug a problem, file a bug
report, run test infrastructure or writing code etc.
## Commit author
Sometimes also called 'committer'. Someone who has authored a commit in the
curl source code repository. Committers are recorded as `Author` in git.
## Maintainers
A maintainer in the curl project is an individual who has been given
permissions to push commits to one of the git repositories.
Maintainers are free to push commits to the repositories at their own will.
Maintainers are however expected to listen to feedback from users and any
change that is non-trivial in size or nature *should* be brought to the
project as a Pull-Request (PR) to allow others to comment/object before merge.
## Former maintainers
A maintainer who stops being active in the project will at some point get
their push permissions removed. We do this for security reasons but also to
make sure that we always have the list of maintainers as "the team that push
stuff to curl".
Getting push permissions removed is not a punishment. Everyone who ever worked
on maintaining curl is considered a hero, for all time hereafter.
## Security team members
We have a security team. That is the team of people who are subscribed to the
curl-security mailing list; the receivers of security reports from users and
developers. This list of people will vary over time but should be skilled
developers familiar with the curl project.
The security team works best when it consists of a small set of active
persons. We invite new members when the team seems to need it, and we also
expect to retire security team members as they "drift off" from the project or
just find themselves unable to perform their duties there.
## Server admins
We run a web server, a mailing list and more on the curl project's primary
server. That physical machine is owned and run by Haxx. Daniel is the primary
admin of all things curl related server stuff, but Björn Stenberg and Linus
Feltzing serve as backup admins for when Daniel is gone or unable.
The primary server is paid for by Haxx. The machine is physically located in a
server bunker in Stockholm Sweden, operated by the company Glesys.
The website contents are served to the web via Fastly and Daniel is the
primary curl contact with Fastly.
## BDFL
That is Daniel.
# Maintainers
A curl maintainer is a project volunteer who has the authority and rights to
merge changes into a git repository in the curl project.
Anyone can aspire to become a curl maintainer.
### Duties
There are no mandatory duties. We hope and wish that maintainers consider
reviewing patches and help merging them, especially when the changes are
within the area of personal expertise and experience.
### Requirements
- only merge code that meets our quality and style guide requirements.
- *never* merge code without doing a PR first, unless the change is "trivial"
- if in doubt, ask for input/feedback from others
### Recommendations
- we require two-factor authentication enabled on your GitHub account to
reduce risk of malicious source code tampering
- consider enabling signed git commits for additional verification of changes
### Merge advice
When you are merging patches/pull requests...
- make sure the commit messages follow our template
- squash patch sets into a few logical commits even if the PR did not, if
necessary
- avoid the "merge" button on GitHub, do it "manually" instead to get full
control and full audit trail (GitHub leaves out you as "Committer:")
- remember to credit the reporter and the helpers.
## Who are maintainers?
The [list of maintainers](https://github.com/orgs/curl/people). Be aware that
the level of presence and activity in the project vary greatly between
different individuals and over time.
### Become a maintainer?
If you think you can help making the project better by shouldering some
maintaining responsibilities, then please get in touch.
You will be expected to be familiar with the curl project and its ways of
working. You need to have gotten a few quality patches merged as a proof of
this.
### Stop being a maintainer
If you (appear to) not be active in the project anymore, you may be removed as
a maintainer. Thank you for your service!

@ -1,89 +0,0 @@
# How to get started helping out in the curl project
We are always in need of more help. If you are new to the project and are
looking for ways to contribute and help out, this document aims to give a few
good starting points.
You may subscribe to the [curl-library mailing
list](https://lists.haxx.se/listinfo/curl-library) to keep track of the
current discussion topics; or if you are registered on GitHub, you can use the
[Discussions section](https://github.com/curl/curl/discussions) on the main
curl repository.
## Scratch your own itch
One of the best ways is to start working on any problems or issues you have
found yourself or perhaps got annoyed at in the past. It can be a spelling
error in an error text or a weirdly phrased section in a man page. Hunt it
down and report the bug. Or make your first pull request with a fix for that.
## Smaller tasks
Some projects mark small issues as "beginner friendly", "bite-sized" or
similar. We do not do that in curl since such issues never linger around long
enough. Simple issues get handled fast.
If you are looking for a smaller or simpler task in the project to help out
with as an entry-point into the project, perhaps because you are a newcomer or
even maybe not a terribly experienced developer, here's our advice:
- Read through this document to get a grasp on a general approach to use
- Consider adding a test case for something not currently tested (correctly)
- Consider updating or adding documentation
- One way to get started gently in the project, is to participate in an
existing issue/PR and help out by reproducing the issue, review the code in
the PR etc.
## Help wanted
In the issue tracker we occasionally mark bugs with [help
wanted](https://github.com/curl/curl/labels/help%20wanted), as a sign that the
bug is acknowledged to exist and that there's nobody known to work on this
issue for the moment. Those are bugs that are fine to "grab" and provide a
pull request for. The complexity level of these will of course vary, so pick
one that piques your interest.
## Work on known bugs
Some bugs are known and have not yet received attention and work enough to get
fixed. We collect such known existing flaws in the
[KNOWN_BUGS](https://curl.se/docs/knownbugs.html) page. Many of them link
to the original bug report with some additional details, but some may also
have aged a bit and may require some verification that the bug still exists in
the same way and that what was said about it in the past is still valid.
## Fix autobuild problems
On the [autobuilds page](https://curl.se/dev/builds.html) we show a
collection of test results from the automatic curl build and tests that are
performed by volunteers. Fixing compiler warnings and errors shown there is
something we value greatly. Also, if you own or run systems or architectures
that are not already tested in the autobuilds, we also appreciate more
volunteers running builds automatically to help us keep curl portable.
## TODO items
Ideas for features and functions that we have considered worthwhile to
implement and provide are kept in the
[TODO](https://curl.se/docs/todo.html) file. Some of the ideas are
rough. Some are well thought out. Some probably are not really suitable
anymore.
Before you invest a lot of time on a TODO item, do bring it up for discussion
on the mailing list. For discussion on applicability but also for ideas and
brainstorming on specific ways to do the implementation etc.
## You decide
You can also come up with a completely new thing you think we should do. Or
not do. Or fix. Or add to the project. You then either bring it to the mailing
list first to see if people will shoot down the idea at once, or you bring a
first draft of the idea as a pull request and take the discussion there around
the specific implementation. Either way is fine.
## CONTRIBUTE
We offer [guidelines](https://curl.se/dev/contribute.html) that are
suitable to be familiar with before you decide to contribute to curl. If
you are used to open source development, you will probably not find many
surprises there.

@ -1,432 +0,0 @@
How curl Became Like This
=========================
Towards the end of 1996, Daniel Stenberg was spending time writing an IRC bot
for an Amiga related channel on EFnet. He then came up with the idea to make
currency-exchange calculations available to Internet Relay Chat (IRC)
users. All the necessary data were published on the Web; he just needed to
automate their retrieval.
1996
----
On November 11, 1996 the Brazilian developer Rafael Sagula wrote and released
HttpGet version 0.1.
Daniel extended this existing command-line open-source tool. After a few minor
adjustments, it did just what he needed. The first release with Daniel's
additions was 0.2, released on December 17, 1996. Daniel quickly became the
new maintainer of the project.
1997
----
HttpGet 0.3 was released in January 1997 and now it accepted HTTP URLs on the
command line.
HttpGet 1.0 was released on April 8 1997 with brand new HTTP proxy support.
We soon found and fixed support for getting currencies over GOPHER. Once FTP
download support was added, the name of the project was changed and urlget 2.0
was released in August 1997. The http-only days were already passed.
Version 2.2 was released on August 14 1997 and introduced support to build for
and run on Windows and Solaris.
November 24 1997: Version 3.1 added FTP upload support.
Version 3.5 added support for HTTP POST.
1998
----
February 4: urlget 3.10
February 9: urlget 3.11
March 14: urlget 3.12 added proxy authentication.
The project slowly grew bigger. With upload capabilities, the name was once
again misleading and a second name change was made. On March 20, 1998 curl 4
was released. (The version numbering from the previous names was kept.)
(Unrelated to this project a company called Curl Corporation registered a US
trademark on the name "CURL" on May 18 1998. That company had then already
registered the curl.com domain back in November of the previous year. All this
was revealed to us much later.)
SSL support was added, powered by the SSLeay library.
August: first announcement of curl on freshmeat.net.
October: with the curl 4.9 release and the introduction of cookie support,
curl was no longer released under the GPL license. Now we are at 4000 lines of
code, we switched over to the MPL license to restrict the effects of
"copyleft".
November: configure script and reported successful compiles on several
major operating systems. The never-quite-understood -F option was added and
curl could now simulate quite a lot of a browser. TELNET support was added.
Curl 5 was released in December 1998 and introduced the first ever curl man
page. People started making Linux RPM packages out of it.
1999
----
January: DICT support added.
OpenSSL took over and SSLeay was abandoned.
May: first Debian package.
August: LDAP:// and FILE:// support added. The curl website gets 1300 visits
weekly. Moved site to curl.haxx.nu.
September: Released curl 6.0. 15000 lines of code.
December 28: added the project on Sourceforge and started using its services
for managing the project.
2000
----
Spring: major internal overhaul to provide a suitable library interface.
The first non-beta release was named 7.1 and arrived in August. This offered
the easy interface and turned out to be the beginning of actually getting
other software and programs to be based on and powered by libcurl. Almost
20000 lines of code.
June: the curl site moves to "curl.haxx.se"
August, the curl website gets 4000 visits weekly.
The PHP guys adopted libcurl already the same month, when the first ever third
party libcurl binding showed up. CURL has been a supported module in PHP since
the release of PHP 4.0.2. This would soon get followers. More than 16
different bindings exist at the time of this writing.
September: kerberos4 support was added.
November: started the work on a test suite for curl. It was later re-written
from scratch again. The libcurl major SONAME number was set to 1.
2001
----
January: Daniel released curl 7.5.2 under a new license again: MIT (or
MPL). The MIT license is extremely liberal and can be combined with GPL
in other projects. This would finally put an end to the "complaints" from
people involved in GPLed projects that previously were prohibited from using
libcurl while it was released under MPL only. (Due to the fact that MPL is
deemed "GPL incompatible".)
March 22: curl supports HTTP 1.1 starting with the release of 7.7. This
also introduced libcurl's ability to do persistent connections. 24000 lines of
code. The libcurl major SONAME number was bumped to 2 due to this overhaul.
The first experimental ftps:// support was added.
August: The curl website gets 8000 visits weekly. Curl Corporation contacted
Daniel to discuss "the name issue". After Daniel's reply, they have never
since got back in touch again.
September: libcurl 7.9 introduces cookie jar and `curl_formadd()`. During the
forthcoming 7.9.x releases, we introduced the multi interface slowly and
without many whistles.
September 25: curl (7.7.2) is bundled in Mac OS X (10.1) for the first time. It was
already becoming more and more of a standard utility of Linux distributions
and a regular in the BSD ports collections.
2002
----
June: the curl website gets 13000 visits weekly. curl and libcurl is
35000 lines of code. Reported successful compiles on more than 40 combinations
of CPUs and operating systems.
To estimate the number of users of the curl tool or libcurl library is next to
impossible. Around 5000 downloaded packages each week from the main site gives
a hint, but the packages are mirrored extensively, bundled with numerous OS
distributions and otherwise retrieved as part of other software.
October 1: with the release of curl 7.10 it is released under the MIT license
only.
Starting with 7.10, curl verifies SSL server certificates by default.
2003
----
January: Started working on the distributed curl tests. The autobuilds.
February: the curl site averages at 20000 visits weekly. At any given moment,
there's an average of 3 people browsing the website.
Multiple new authentication schemes are supported: Digest (May), NTLM (June)
and Negotiate (June).
November: curl 7.10.8 is released. 45000 lines of code. ~55000 unique visitors
to the website. Five official web mirrors.
December: full-fledged SSL for FTP is supported.
2004
----
January: curl 7.11.0 introduced large file support.
June: curl 7.12.0 introduced IDN support. 10 official web mirrors.
This release bumped the major SONAME to 3 due to the removal of the
`curl_formparse()` function
August: Curl and libcurl 7.12.1
Public curl release number: 82
Releases counted from the beginning: 109
Available command line options: 96
Available curl_easy_setopt() options: 120
Number of public functions in libcurl: 36
Amount of public website mirrors: 12
Number of known libcurl bindings: 26
2005
----
April: GnuTLS can now optionally be used for the secure layer when curl is
built.
April: Added the multi_socket() API
September: TFTP support was added.
More than 100,000 unique visitors of the curl website. 25 mirrors.
December: security vulnerability: libcurl URL Buffer Overflow
2006
----
January: We dropped support for Gopher. We found bugs in the implementation
that turned out to have been introduced years ago, so with the conclusion that
nobody had found out in all this time we removed it instead of fixing it.
March: security vulnerability: libcurl TFTP Packet Buffer Overflow
September: The major SONAME number for libcurl was bumped to 4 due to the
removal of ftp third party transfer support.
November: Added SCP and SFTP support
2007
----
February: Added support for the Mozilla NSS library to do the SSL/TLS stuff
July: security vulnerability: libcurl GnuTLS insufficient cert verification
2008
----
November:
Command line options: 128
curl_easy_setopt() options: 158
Public functions in libcurl: 58
Known libcurl bindings: 37
Contributors: 683
145,000 unique visitors. >100 GB downloaded.
2009
----
March: security vulnerability: libcurl Arbitrary File Access
April: added CMake support
August: security vulnerability: libcurl embedded zero in cert name
December: Added support for IMAP, POP3 and SMTP
2010
----
January: Added support for RTSP
February: security vulnerability: libcurl data callback excessive length
March: The project switched over to use git (hosted by GitHub) instead of CVS
for source code control
May: Added support for RTMP
Added support for PolarSSL to do the SSL/TLS stuff
August:
Public curl releases: 117
Command line options: 138
curl_easy_setopt() options: 180
Public functions in libcurl: 58
Known libcurl bindings: 39
Contributors: 808
Gopher support added (re-added actually, see January 2006)
2011
----
February: added support for the axTLS backend
April: added the cyassl backend (later renamed to WolfSSL)
2012
----
July: Added support for Schannel (native Windows TLS backend) and Darwin SSL
(Native Mac OS X and iOS TLS backend).
Supports Metalink
October: SSH-agent support.
2013
----
February: Cleaned up internals to always uses the "multi" non-blocking
approach internally and only expose the blocking API with a wrapper.
September: First small steps on supporting HTTP/2 with nghttp2.
October: Removed krb4 support.
December: Happy eyeballs.
2014
----
March: first real release supporting HTTP/2
September: Website had 245,000 unique visitors and served 236GB data
SMB and SMBS support
2015
----
June: support for multiplexing with HTTP/2
August: support for HTTP/2 server push
December: Public Suffix List
2016
----
January: the curl tool defaults to HTTP/2 for HTTPS URLs
December: curl 7.52.0 introduced support for HTTPS-proxy!
First TLS 1.3 support
2017
----
July: OSS-Fuzz started fuzzing libcurl
September: Added Multi-SSL support
The website serves 3100 GB/month
Public curl releases: 169
Command line options: 211
curl_easy_setopt() options: 249
Public functions in libcurl: 74
Contributors: 1609
October: SSLKEYLOGFILE support, new MIME API
October: Daniel received the Polhem Prize for his work on curl
November: brotli
2018
----
January: new SSH backend powered by libssh
March: starting with the 1803 release of Windows 10, curl is shipped bundled
with Microsoft's operating system.
July: curl shows headers using bold type face
October: added DNS-over-HTTPS (DoH) and the URL API
MesaLink is a new supported TLS backend
libcurl now does HTTP/2 (and multiplexing) by default on HTTPS URLs
curl and libcurl are installed in an estimated 5 *billion* instances
world-wide.
October 31: Curl and libcurl 7.62.0
Public curl releases: 177
Command line options: 219
curl_easy_setopt() options: 261
Public functions in libcurl: 80
Contributors: 1808
December: removed axTLS support
2019
----
March: added experimental alt-svc support
August: the first HTTP/3 requests with curl.
September: 7.66.0 is released and the tool offers parallel downloads
2020
----
curl and libcurl are installed in an estimated 10 *billion* instances
world-wide.
January: added BearSSL support
March: removed support for PolarSSL, added wolfSSH support
April: experimental MQTT support
August: zstd support
November: the website moves to curl.se. The website serves 10TB data monthly.
December: alt-svc support
2021
----
February 3: curl 7.75.0 ships with support for Hyper as an HTTP backend
March 31: curl 7.76.0 ships with support for rustls
July: HSTS is supported
2022
----
March: added --json, removed mesalink support
Public curl releases: 206
Command line options: 245
curl_easy_setopt() options: 295
Public functions in libcurl: 86
Contributors: 2601
The curl.se website serves 16,500 GB/month over 462M requests, the
official docker image has been pulled 4,098,015,431 times.

@ -1,42 +0,0 @@
# HSTS support
HTTP Strict-Transport-Security. Added as experimental in curl
7.74.0. Supported "for real" since 7.77.0.
## Standard
[HTTP Strict Transport Security](https://datatracker.ietf.org/doc/html/rfc6797)
## Behavior
libcurl features an in-memory cache for HSTS hosts, so that subsequent
HTTP-only requests to a host name present in the cache will get internally
"redirected" to the HTTPS version.
## `curl_easy_setopt()` options:
- `CURLOPT_HSTS_CTRL` - enable HSTS for this easy handle
- `CURLOPT_HSTS` - specify file name where to store the HSTS cache on close
(and possibly read from at startup)
## curl command line options
- `--hsts [filename]` - enable HSTS, use the file as HSTS cache. If filename
is `""` (no length) then no file will be used, only in-memory cache.
## HSTS cache file format
Lines starting with `#` are ignored.
For each hsts entry:
[host name] "YYYYMMDD HH:MM:SS"
The `[host name]` is dot-prefixed if it includes subdomains.
The time stamp is when the entry expires.
## Possible future additions
- `CURLOPT_HSTS_PRELOAD` - provide a set of HSTS host names to load first
- ability to save to something else than a file

@ -1,147 +0,0 @@
# HTTP Cookies
## Cookie overview
Cookies are `name=contents` pairs that an HTTP server tells the client to
hold and then the client sends back those to the server on subsequent
requests to the same domains and paths for which the cookies were set.
Cookies are either "session cookies" which typically are forgotten when the
session is over which is often translated to equal when browser quits, or
the cookies are not session cookies they have expiration dates after which
the client will throw them away.
Cookies are set to the client with the Set-Cookie: header and are sent to
servers with the Cookie: header.
For a long time, the only spec explaining how to use cookies was the
original [Netscape spec from 1994](https://curl.se/rfc/cookie_spec.html).
In 2011, [RFC6265](https://www.ietf.org/rfc/rfc6265.txt) was finally
published and details how cookies work within HTTP. In 2016, an update which
added support for prefixes was
[proposed](https://datatracker.ietf.org/doc/html/draft-ietf-httpbis-cookie-prefixes-00),
and in 2017, another update was
[drafted](https://datatracker.ietf.org/doc/html/draft-ietf-httpbis-cookie-alone-01)
to deprecate modification of 'secure' cookies from non-secure origins. Both
of these drafts have been incorporated into a proposal to
[replace](https://datatracker.ietf.org/doc/html/draft-ietf-httpbis-rfc6265bis-11)
RFC6265. Cookie prefixes and secure cookie modification protection has been
implemented by curl.
curl considers `http://localhost` to be a *secure context*, meaning that it
will allow and use cookies marked with the `secure` keyword even when done
over plain HTTP for this host. curl does this to match how popular browsers
work with secure cookies.
## Cookies saved to disk
Netscape once created a file format for storing cookies on disk so that they
would survive browser restarts. curl adopted that file format to allow
sharing the cookies with browsers, only to see browsers move away from that
format. Modern browsers no longer use it, while curl still does.
The Netscape cookie file format stores one cookie per physical line in the
file with a bunch of associated meta data, each field separated with
TAB. That file is called the cookie jar in curl terminology.
When libcurl saves a cookie jar, it creates a file header of its own in
which there is a URL mention that will link to the web version of this
document.
## Cookie file format
The cookie file format is text based and stores one cookie per line. Lines
that start with `#` are treated as comments. An exception is lines that
start with `#HttpOnly_`, which is a prefix for cookies that have the
`HttpOnly` attribute set.
Each line that specifies a single cookie consists of seven text fields
separated with TAB characters. A valid line must end with a newline
character.
### Fields in the file
Field number, what type and example data and the meaning of it:
0. string `example.com` - the domain name
1. boolean `FALSE` - include subdomains
2. string `/foobar/` - path
3. boolean `TRUE` - send/receive over HTTPS only
4. number `1462299217` - expires at - seconds since Jan 1st 1970, or 0
5. string `person` - name of the cookie
6. string `daniel` - value of the cookie
## Cookies with curl the command line tool
curl has a full cookie "engine" built in. If you just activate it, you can
have curl receive and send cookies exactly as mandated in the specs.
Command line options:
`-b, --cookie`
tell curl a file to read cookies from and start the cookie engine, or if it
is not a file it will pass on the given string. `-b name=var` works and so
does `-b cookiefile`.
`-j, --junk-session-cookies`
when used in combination with -b, it will skip all "session cookies" on load
so as to appear to start a new cookie session.
`-c, --cookie-jar`
tell curl to start the cookie engine and write cookies to the given file
after the request(s)
## Cookies with libcurl
libcurl offers several ways to enable and interface the cookie engine. These
options are the ones provided by the native API. libcurl bindings may offer
access to them using other means.
`CURLOPT_COOKIE`
Is used when you want to specify the exact contents of a cookie header to
send to the server.
`CURLOPT_COOKIEFILE`
Tell libcurl to activate the cookie engine, and to read the initial set of
cookies from the given file. Read-only.
`CURLOPT_COOKIEJAR`
Tell libcurl to activate the cookie engine, and when the easy handle is
closed save all known cookies to the given cookie jar file. Write-only.
`CURLOPT_COOKIELIST`
Provide detailed information about a single cookie to add to the internal
storage of cookies. Pass in the cookie as an HTTP header with all the
details set, or pass in a line from a Netscape cookie file. This option can
also be used to flush the cookies etc.
`CURLOPT_COOKIESESSION`
Tell libcurl to ignore all cookies it is about to load that are session
cookies.
`CURLINFO_COOKIELIST`
Extract cookie information from the internal cookie storage as a linked
list.
## Cookies with JavaScript
These days a lot of the web is built up by JavaScript. The web browser loads
complete programs that render the page you see. These JavaScript programs
can also set and access cookies.
Since curl and libcurl are plain HTTP clients without any knowledge of or
capability to handle JavaScript, such cookies will not be detected or used.
Often, if you want to mimic what a browser does on such websites, you can
record web browser HTTP traffic when using such a site and then repeat the
cookie operations using curl or libcurl.

@ -1,102 +0,0 @@
HTTP/2 with curl
================
[HTTP/2 Spec](https://www.rfc-editor.org/rfc/rfc7540.txt)
[http2 explained](https://daniel.haxx.se/http2/)
Build prerequisites
-------------------
- nghttp2
- OpenSSL, libressl, BoringSSL, NSS, GnuTLS, mbedTLS, wolfSSL or Schannel
with a new enough version.
[nghttp2](https://nghttp2.org/)
-------------------------------
libcurl uses this 3rd party library for the low level protocol handling
parts. The reason for this is that HTTP/2 is much more complex at that layer
than HTTP/1.1 (which we implement on our own) and that nghttp2 is an already
existing and well functional library.
We require at least version 1.12.0.
Over an http:// URL
-------------------
If `CURLOPT_HTTP_VERSION` is set to `CURL_HTTP_VERSION_2_0`, libcurl will
include an upgrade header in the initial request to the host to allow
upgrading to HTTP/2.
Possibly we can later introduce an option that will cause libcurl to fail if
not possible to upgrade. Possibly we introduce an option that makes libcurl
use HTTP/2 at once over http://
Over an https:// URL
--------------------
If `CURLOPT_HTTP_VERSION` is set to `CURL_HTTP_VERSION_2_0`, libcurl will use
ALPN to negotiate which protocol to continue with. Possibly introduce an
option that will cause libcurl to fail if not possible to use HTTP/2.
`CURL_HTTP_VERSION_2TLS` was added in 7.47.0 as a way to ask libcurl to prefer
HTTP/2 for HTTPS but stick to 1.1 by default for plain old HTTP connections.
ALPN is the TLS extension that HTTP/2 is expected to use.
`CURLOPT_SSL_ENABLE_ALPN` is offered to allow applications to explicitly
disable ALPN.
Multiplexing
------------
Starting in 7.43.0, libcurl fully supports HTTP/2 multiplexing, which is the
term for doing multiple independent transfers over the same physical TCP
connection.
To take advantage of multiplexing, you need to use the multi interface and set
`CURLMOPT_PIPELINING` to `CURLPIPE_MULTIPLEX`. With that bit set, libcurl will
attempt to re-use existing HTTP/2 connections and just add a new stream over
that when doing subsequent parallel requests.
While libcurl sets up a connection to an HTTP server there is a period during
which it does not know if it can pipeline or do multiplexing and if you add
new transfers in that period, libcurl will default to start new connections
for those transfers. With the new option `CURLOPT_PIPEWAIT` (added in 7.43.0),
you can ask that a transfer should rather wait and see in case there's a
connection for the same host in progress that might end up being possible to
multiplex on. It favors keeping the number of connections low to the cost of
slightly longer time to first byte transferred.
Applications
------------
We hide HTTP/2's binary nature and convert received HTTP/2 traffic to headers
in HTTP 1.1 style. This allows applications to work unmodified.
curl tool
---------
curl offers the `--http2` command line option to enable use of HTTP/2.
curl offers the `--http2-prior-knowledge` command line option to enable use of
HTTP/2 without HTTP/1.1 Upgrade.
Since 7.47.0, the curl tool enables HTTP/2 by default for HTTPS connections.
curl tool limitations
---------------------
The command line tool does not support HTTP/2 server push. It supports
multiplexing when the parallel transfer option is used.
HTTP Alternative Services
-------------------------
Alt-Svc is an extension with a corresponding frame (ALTSVC) in HTTP/2 that
tells the client about an alternative "route" to the same content for the same
origin server that you get the response from. A browser or long-living client
can use that hint to create a new connection asynchronously. For libcurl, we
may introduce a way to bring such clues to the application and/or let a
subsequent request use the alternate route automatically.
[Detailed in RFC 7838](https://datatracker.ietf.org/doc/html/rfc7838)

@ -1,354 +0,0 @@
# HTTP3 (and QUIC)
## Resources
[HTTP/3 Explained](https://http3-explained.haxx.se/en/) - the online free
book describing the protocols involved.
[quicwg.org](https://quicwg.org/) - home of the official protocol drafts
## QUIC libraries
QUIC libraries we are experimenting with:
[ngtcp2](https://github.com/ngtcp2/ngtcp2)
[quiche](https://github.com/cloudflare/quiche)
[msh3](https://github.com/nibanks/msh3) (with [msquic](https://github.com/microsoft/msquic))
## Experimental
HTTP/3 and QUIC support in curl is considered **EXPERIMENTAL** until further
notice. It needs to be enabled at build-time.
Further development and tweaking of the HTTP/3 support in curl will happen in
the master branch using pull-requests, just like ordinary changes.
To fix before we remove the experimental label:
- working multiplexing and GTFO handling
- fallback or another flexible way to go (back to) h1/h2 if h3 fails
- enough test cases to verify basic HTTP/3 functionality
- no "important" bugs left on HTTP/3
- it's fine to "leave" individual backends as experimental if necessary
# ngtcp2 version
Building curl with ngtcp2 involves 3 components: `ngtcp2` itself, `nghttp3` and a QUIC supporting TLS library. The supported TLS libraries are covered below.
For now, `ngtcp2` and `nghttp3` are still *experimental* which means their evolution bring breaking changes. Therefore, the proper version of both libraries need to be used when building curl. These are
* `ngtcp2`: v0.15.0
* `nghttp3`: v0.11.0
## Build with OpenSSL
Build (patched) OpenSSL
% git clone --depth 1 -b openssl-3.0.8+quic https://github.com/quictls/openssl
% cd openssl
% ./config enable-tls1_3 --prefix=<somewhere1>
% make
% make install
Build nghttp3
% cd ..
% git clone -b v0.11.0 https://github.com/ngtcp2/nghttp3
% cd nghttp3
% autoreconf -fi
% ./configure --prefix=<somewhere2> --enable-lib-only
% make
% make install
Build ngtcp2
% cd ..
% git clone -b v0.15.0 https://github.com/ngtcp2/ngtcp2
% cd ngtcp2
% autoreconf -fi
% ./configure PKG_CONFIG_PATH=<somewhere1>/lib/pkgconfig:<somewhere2>/lib/pkgconfig LDFLAGS="-Wl,-rpath,<somewhere1>/lib" --prefix=<somewhere3> --enable-lib-only
% make
% make install
Build curl
% cd ..
% git clone https://github.com/curl/curl
% cd curl
% autoreconf -fi
% LDFLAGS="-Wl,-rpath,<somewhere1>/lib" ./configure --with-openssl=<somewhere1> --with-nghttp3=<somewhere2> --with-ngtcp2=<somewhere3>
% make
% make install
For OpenSSL 3.0.0 or later builds on Linux for x86_64 architecture, substitute all occurrences of "/lib" with "/lib64"
## Build with GnuTLS
Build GnuTLS
% git clone --depth 1 https://gitlab.com/gnutls/gnutls.git
% cd gnutls
% ./bootstrap
% ./configure --prefix=<somewhere1>
% make
% make install
Build nghttp3
% cd ..
% git clone -b v0.11.0 https://github.com/ngtcp2/nghttp3
% cd nghttp3
% autoreconf -fi
% ./configure --prefix=<somewhere2> --enable-lib-only
% make
% make install
Build ngtcp2
% cd ..
% git clone -b v0.15.0 https://github.com/ngtcp2/ngtcp2
% cd ngtcp2
% autoreconf -fi
% ./configure PKG_CONFIG_PATH=<somewhere1>/lib/pkgconfig:<somewhere2>/lib/pkgconfig LDFLAGS="-Wl,-rpath,<somewhere1>/lib" --prefix=<somewhere3> --enable-lib-only --with-gnutls
% make
% make install
Build curl
% cd ..
% git clone https://github.com/curl/curl
% cd curl
% autoreconf -fi
% ./configure --with-gnutls=<somewhere1> --with-nghttp3=<somewhere2> --with-ngtcp2=<somewhere3>
% make
% make install
## Build with wolfSSL
Build wolfSSL
% git clone https://github.com/wolfSSL/wolfssl.git
% cd wolfssl
% autoreconf -fi
% ./configure --prefix=<somewhere1> --enable-quic --enable-session-ticket --enable-earlydata --enable-psk --enable-harden --enable-altcertchains
% make
% make install
Build nghttp3
% cd ..
% git clone -b v0.11.0 https://github.com/ngtcp2/nghttp3
% cd nghttp3
% autoreconf -fi
% ./configure --prefix=<somewhere2> --enable-lib-only
% make
% make install
Build ngtcp2
% cd ..
% git clone -b v0.15.0 https://github.com/ngtcp2/ngtcp2
% cd ngtcp2
% autoreconf -fi
% ./configure PKG_CONFIG_PATH=<somewhere1>/lib/pkgconfig:<somewhere2>/lib/pkgconfig LDFLAGS="-Wl,-rpath,<somewhere1>/lib" --prefix=<somewhere3> --enable-lib-only --with-wolfssl
% make
% make install
Build curl
% cd ..
% git clone https://github.com/curl/curl
% cd curl
% autoreconf -fi
% ./configure --with-wolfssl=<somewhere1> --with-nghttp3=<somewhere2> --with-ngtcp2=<somewhere3>
% make
% make install
# quiche version
Since the quiche build manages its dependencies, curl can be built against the latest version. You are *probably* able to build against their main branch, but in case of problems, we recommend their latest release tag.
## build
Build quiche and BoringSSL:
% git clone --recursive https://github.com/cloudflare/quiche
% cd quiche
% cargo build --package quiche --release --features ffi,pkg-config-meta,qlog
% mkdir quiche/deps/boringssl/src/lib
% ln -vnf $(find target/release -name libcrypto.a -o -name libssl.a) quiche/deps/boringssl/src/lib/
Build curl:
% cd ..
% git clone https://github.com/curl/curl
% cd curl
% autoreconf -fi
% ./configure LDFLAGS="-Wl,-rpath,$PWD/../quiche/target/release" --with-openssl=$PWD/../quiche/quiche/deps/boringssl/src --with-quiche=$PWD/../quiche/target/release
% make
% make install
If `make install` results in `Permission denied` error, you will need to prepend it with `sudo`.
# msh3 (msquic) version
## Build Linux (with quictls fork of OpenSSL)
Build msh3:
% git clone -b v0.6.0 --depth 1 --recursive https://github.com/nibanks/msh3
% cd msh3 && mkdir build && cd build
% cmake -G 'Unix Makefiles' -DCMAKE_BUILD_TYPE=RelWithDebInfo ..
% cmake --build .
% cmake --install .
Build curl:
% git clone https://github.com/curl/curl
% cd curl
% autoreconf -fi
% ./configure LDFLAGS="-Wl,-rpath,/usr/local/lib" --with-msh3=/usr/local --with-openssl
% make
% make install
Run from `/usr/local/bin/curl`.
## Build Windows
Build msh3:
% git clone -b v0.6.0 --depth 1 --recursive https://github.com/nibanks/msh3
% cd msh3 && mkdir build && cd build
% cmake -G 'Visual Studio 17 2022' -DCMAKE_BUILD_TYPE=RelWithDebInfo ..
% cmake --build . --config Release
% cmake --install . --config Release
**Note** - On Windows, Schannel will be used for TLS support by default. If
you with to use (the quictls fork of) OpenSSL, specify the `-DQUIC_TLS=openssl`
option to the generate command above. Also note that OpenSSL brings with it an
additional set of build dependencies not specified here.
Build curl (in [Visual Studio Command prompt](../winbuild/README.md#open-a-command-prompt)):
% git clone https://github.com/curl/curl
% cd curl/winbuild
% nmake /f Makefile.vc mode=dll WITH_MSH3=dll MSH3_PATH="C:/Program Files/msh3" MACHINE=x64
**Note** - If you encounter a build error with `tool_hugehelp.c` being missing,
rename `tool_hugehelp.c.cvs` in the same directory to `tool_hugehelp.c` and
then run `nmake` again.
Run in the `C:/Program Files/msh3/lib` directory, copy `curl.exe` to that
directory, or copy `msquic.dll` and `msh3.dll` from that directory to the
`curl.exe` directory. For example:
% C:\Program Files\msh3\lib> F:\curl\builds\libcurl-vc-x64-release-dll-ipv6-sspi-schannel-msh3\bin\curl.exe --http3 https://www.google.com
# `--http3`
Use only HTTP/3:
curl --http3-only https://nghttp2.org:4433/
Use HTTP/3 with fallback to HTTP/2 or HTTP/1.1 (see "HTTPS eyeballing" below):
curl --http3 https://nghttp2.org:4433/
Upgrade via Alt-Svc:
curl --alt-svc altsvc.cache https://quic.aiortc.org/
See this [list of public HTTP/3 servers](https://bagder.github.io/HTTP3-test/)
### HTTPS eyeballing
With option `--http3` curl will attempt earlier HTTP versions as well should the connect
attempt via HTTP/3 not succeed "fast enough". This strategy is similar to IPv4/6 happy
eyeballing where the alternate address family is used in parallel after a short delay.
The IPv4/6 eyeballing has a default of 200ms and you may override that via `--happy-eyeballs-timeout-ms value`.
Since HTTP/3 is still relatively new, we decided to use this timeout also for the HTTP eyeballing - with a slight twist.
The `happy-eyeballs-timeout-ms` value is the **hard** timeout, meaning after that time expired, a TLS connection is opened in addition to negotiate HTTP/2 or HTTP/1.1. At half of that value - currently - is the **soft** timeout. The soft timeout fires, when there has been **no data at all** seen from the server on the HTTP/3 connection.
So, without you specifying anything, the hard timeout is 200ms and the soft is 100ms:
* Ideally, the whole QUIC handshake happens and curl has an HTTP/3 connection in less than 100ms.
* When QUIC is not supported (or UDP does not work for this network path), no reply is seen and the HTTP/2 TLS+TCP connection starts 100ms later.
* In the worst case, UDP replies start before 100ms, but drag on. This will start the TLS+TCP connection after 200ms.
* When the QUIC handshake fails, the TLS+TCP connection is attempted right away. For example, when the QUIC server presents the wrong certificate.
The whole transfer only fails, when **both** QUIC and TLS+TCP fail to handshake or time out.
Note that all this happens in addition to IP version happy eyeballing. If the name resolution for the server gives more than one IP address, curl will try all those until one succeeds - just as with all other protocols. And if those IP addresses contain both IPv6 and IPv4, those attempts will happen, delayed, in parallel (the actual eyeballing).
## Known Bugs
Check out the [list of known HTTP3 bugs](https://curl.se/docs/knownbugs.html#HTTP3).
# HTTP/3 Test server
This is not advice on how to run anything in production. This is for
development and experimenting.
## Prerequisite(s)
An existing local HTTP/1.1 server that hosts files. Preferably also a few huge
ones. You can easily create huge local files like `truncate -s=8G 8GB` - they
are huge but do not occupy that much space on disk since they are just big
holes.
In a Debian setup you can install **apache2**. It runs on port 80 and has a
document root in `/var/www/html`. Download the 8GB file from apache with `curl
localhost/8GB -o dev/null`
In this description we setup and run an HTTP/3 reverse-proxy in front of the
HTTP/1 server.
## Setup
You can select either or both of these server solutions.
### nghttpx
Get, build and install **quictls**, **nghttp3** and **ngtcp2** as described
above.
Get, build and install **nghttp2**:
git clone https://github.com/nghttp2/nghttp2.git
cd nghttp2
autoreconf -fi
PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/home/daniel/build-quictls/lib/pkgconfig:/home/daniel/build-nghttp3/lib/pkgconfig:/home/daniel/build-ngtcp2/lib/pkgconfig LDFLAGS=-L/home/daniel/build-quictls/lib CFLAGS=-I/home/daniel/build-quictls/include ./configure --enable-maintainer-mode --prefix=/home/daniel/build-nghttp2 --disable-shared --enable-app --enable-http3 --without-jemalloc --without-libxml2 --without-systemd
make && make install
Run the local h3 server on port 9443, make it proxy all traffic through to
HTTP/1 on localhost port 80. For local toying, we can just use the test cert
that exists in curl's test dir.
CERT=$CURLSRC/tests/stunnel.pem
$HOME/bin/nghttpx $CERT $CERT --backend=localhost,80 \
--frontend="localhost,9443;quic"
### Caddy
[Install Caddy](https://caddyserver.com/docs/install). For easiest use, the binary
should be either in your PATH or your current directory.
Create a `Caddyfile` with the following content:
~~~
localhost:7443 {
respond "Hello, world! You're using {http.request.proto}"
}
~~~
Then run Caddy:
./caddy start
Making requests to `https://localhost:7443` should tell you which protocol is being used.
You can change the hard-coded response to something more useful by replacing `respond`
with `reverse_proxy` or `file_server`, for example: `reverse_proxy localhost:80`

@ -1,73 +0,0 @@
# Hyper
Hyper is a separate HTTP library written in Rust. curl can be told to use this
library as a backend to deal with HTTP.
## Experimental!
Hyper support in curl is considered **EXPERIMENTAL** until further notice. It
needs to be explicitly enabled at build-time.
Further development and tweaking of the Hyper backend support in curl will
happen in the master branch using pull-requests, just like ordinary
changes.
## Hyper version
The C API for Hyper is brand new and is still under development.
## build curl with hyper
Since March 3 2022, hyper needs the nightly rustc to build, which you may need
to install first with:
% rustup toolchain install nightly
Then build hyper and enable its C API like this:
% git clone https://github.com/hyperium/hyper
% cd hyper
% RUSTFLAGS="--cfg hyper_unstable_ffi" cargo +nightly rustc --features client,http1,http2,ffi -Z unstable-options --crate-type cdylib
Build curl to use hyper's C API:
% git clone https://github.com/curl/curl
% cd curl
% autoreconf -fi
% ./configure --with-hyper=<hyper dir>
% make
# using Hyper internally
Hyper is a low level HTTP transport library. curl itself provides all HTTP
headers and Hyper provides all received headers back to curl.
Therefore, most of the "header logic" in curl as in responding to and acting
on specific input and output headers are done the same way in curl code.
The API in Hyper delivers received HTTP headers as (cleaned up) name=value
pairs, making it impossible for curl to know the exact byte representation
over the wire with Hyper.
## Limitations
The hyper backend does not support
- `CURLOPT_IGNORE_CONTENT_LENGTH`
- `--raw` and disabling `CURLOPT_HTTP_TRANSFER_DECODING`
- RTSP
- hyper is much stricter about what HTTP header contents it allows
- HTTP/0.9
- HTTP/2 upgrade using HTTP:// URLs. Aka 'h2c'
## Remaining issues
This backend is still not feature complete with the native backend. Areas that
still need attention and verification include:
- multiplexed HTTP/2
- h2 Upgrade:
- pausing transfers
- receiving HTTP/1 trailers
- sending HTTP/1 trailers

@ -1,9 +0,0 @@
_ _ ____ _
___| | | | _ \| |
/ __| | | | |_) | |
| (__| |_| | _ <| |___
\___|\___/|_| \_\_____|
How To Compile
see INSTALL.md

@ -1,89 +0,0 @@
_ _ ____ _
___| | | | _ \| |
/ __| | | | |_) | |
| (__| |_| | _ <| |___
\___|\___/|_| \_\_____|
How To Compile with CMake
Building with CMake
==========================
This document describes how to compile, build and install curl and libcurl
from source code using the CMake build tool. To build with CMake, you will
of course have to first install CMake. The minimum required version of
CMake is specified in the file CMakeLists.txt found in the top of the curl
source tree. Once the correct version of CMake is installed you can follow
the instructions below for the platform you are building on.
CMake builds can be configured either from the command line, or from one
of CMake's GUI's.
Current flaws in the curl CMake build
=====================================
Missing features in the cmake build:
- Builds libcurl without large file support
- Does not support all SSL libraries (only OpenSSL, Schannel,
Secure Transport, and mbed TLS, NSS, WolfSSL)
- Does not allow different resolver backends (no c-ares build support)
- No RTMP support built
- Does not allow build curl and libcurl debug enabled
- Does not allow a custom CA bundle path
- Does not allow you to disable specific protocols from the build
- Does not find or use krb4 or GSS
- Rebuilds test files too eagerly, but still cannot run the tests
- Does not detect the correct strerror_r flavor when cross-compiling (issue #1123)
Command Line CMake
==================
A CMake build of curl is similar to the autotools build of curl. It
consists of the following steps after you have unpacked the source.
1. Create an out of source build tree parallel to the curl source
tree and change into that directory
$ mkdir curl-build
$ cd curl-build
2. Run CMake from the build tree, giving it the path to the top of
the curl source tree. CMake will pick a compiler for you. If you
want to specify the compile, you can set the CC environment
variable prior to running CMake.
$ cmake ../curl
$ make
3. Install to default location:
$ make install
(The test suite does not work with the cmake build)
ccmake
=========
CMake comes with a curses based interface called ccmake. To run ccmake on
a curl use the instructions for the command line cmake, but substitute
ccmake ../curl for cmake ../curl. This will bring up a curses interface
with instructions on the bottom of the screen. You can press the "c" key
to configure the project, and the "g" key to generate the project. After
the project is generated, you can run make.
cmake-gui
=========
CMake also comes with a Qt based GUI called cmake-gui. To configure with
cmake-gui, you run cmake-gui and follow these steps:
1. Fill in the "Where is the source code" combo box with the path to
the curl source tree.
2. Fill in the "Where to build the binaries" combo box with the path
to the directory for your build tree, ideally this should not be the
same as the source tree, but a parallel directory called curl-build or
something similar.
3. Once the source and binary directories are specified, press the
"Configure" button.
4. Select the native build tool that you want to use.
5. At this point you can change any of the options presented in the
GUI. Once you have selected all the options you want, click the
"Generate" button.
6. Run the native build tool that you used CMake to generate.

@ -1,618 +0,0 @@
# how to install curl and libcurl
## Installing Binary Packages
Lots of people download binary distributions of curl and libcurl. This
document does not describe how to install curl or libcurl using such a binary
package. This document describes how to compile, build and install curl and
libcurl from source code.
## Building using vcpkg
You can download and install curl and libcurl using the [vcpkg](https://github.com/Microsoft/vcpkg/) dependency manager:
git clone https://github.com/Microsoft/vcpkg.git
cd vcpkg
./bootstrap-vcpkg.sh
./vcpkg integrate install
vcpkg install curl[tool]
The curl port in vcpkg is kept up to date by Microsoft team members and
community contributors. If the version is out of date, please [create an issue
or pull request](https://github.com/Microsoft/vcpkg) on the vcpkg repository.
## Building from git
If you get your code off a git repository instead of a release tarball, see
the `GIT-INFO` file in the root directory for specific instructions on how to
proceed.
# Unix
A normal Unix installation is made in three or four steps (after you have
unpacked the source archive):
./configure --with-openssl [--with-gnutls --with-wolfssl]
make
make test (optional)
make install
(Adjust the configure line accordingly to use the TLS library you want.)
You probably need to be root when doing the last command.
Get a full listing of all available configure options by invoking it like:
./configure --help
If you want to install curl in a different file hierarchy than `/usr/local`,
specify that when running configure:
./configure --prefix=/path/to/curl/tree
If you have write permission in that directory, you can do 'make install'
without being root. An example of this would be to make a local install in
your own home directory:
./configure --prefix=$HOME
make
make install
The configure script always tries to find a working SSL library unless
explicitly told not to. If you have OpenSSL installed in the default search
path for your compiler/linker, you do not need to do anything special. If you
have OpenSSL installed in `/usr/local/ssl`, you can run configure like:
./configure --with-openssl
If you have OpenSSL installed somewhere else (for example, `/opt/OpenSSL`) and
you have pkg-config installed, set the pkg-config path first, like this:
env PKG_CONFIG_PATH=/opt/OpenSSL/lib/pkgconfig ./configure --with-openssl
Without pkg-config installed, use this:
./configure --with-openssl=/opt/OpenSSL
If you insist on forcing a build without SSL support, you can run configure
like this:
./configure --without-ssl
If you have OpenSSL installed, but with the libraries in one place and the
header files somewhere else, you have to set the `LDFLAGS` and `CPPFLAGS`
environment variables prior to running configure. Something like this should
work:
CPPFLAGS="-I/path/to/ssl/include" LDFLAGS="-L/path/to/ssl/lib" ./configure
If you have shared SSL libs installed in a directory where your runtime
linker does not find them (which usually causes configure failures), you can
provide this option to gcc to set a hard-coded path to the runtime linker:
LDFLAGS=-Wl,-R/usr/local/ssl/lib ./configure --with-openssl
## Static builds
To force a static library compile, disable the shared library creation by
running configure like:
./configure --disable-shared
The configure script is primarily done to work with shared/dynamic third party
dependencies. When linking with shared libraries, the dependency "chain" is
handled automatically by the library loader - on all modern systems.
If you instead link with a static library, you need to provide all the
dependency libraries already at the link command line.
Figuring out all the dependency libraries for a given library is hard, as it
might involve figuring out the dependencies of the dependencies and they vary
between platforms and change between versions.
When using static dependencies, the build scripts will mostly assume that you,
the user, will provide all the necessary additional dependency libraries as
additional arguments in the build. With configure, by setting `LIBS` or
`LDFLAGS` on the command line.
Building statically is not for the faint of heart.
## Debug
If you are a curl developer and use gcc, you might want to enable more debug
options with the `--enable-debug` option.
curl can be built to use a whole range of libraries to provide various useful
services, and configure will try to auto-detect a decent default. But if you
want to alter it, you can select how to deal with each individual library.
## Select TLS backend
These options are provided to select the TLS backend to use.
- AmiSSL: `--with-amissl`
- BearSSL: `--with-bearssl`
- GnuTLS: `--with-gnutls`.
- mbedTLS: `--with-mbedtls`
- NSS: `--with-nss`
- OpenSSL: `--with-openssl` (also for BoringSSL, AWS-LC, libressl, and quictls)
- rustls: `--with-rustls`
- Schannel: `--with-schannel`
- Secure Transport: `--with-secure-transport`
- wolfSSL: `--with-wolfssl`
You can build curl with *multiple* TLS backends at your choice, but some TLS
backends cannot be combined: if you build with an OpenSSL fork (or wolfSSL),
you cannot add another OpenSSL fork (or wolfSSL) simply because they have
conflicting identical symbol names.
When you build with multiple TLS backends, you can select the active one at
run-time when curl starts up.
## configure finding libs in wrong directory
When the configure script checks for third-party libraries, it adds those
directories to the `LDFLAGS` variable and then tries linking to see if it
works. When successful, the found directory is kept in the `LDFLAGS` variable
when the script continues to execute and do more tests and possibly check for
more libraries.
This can make subsequent checks for libraries wrongly detect another
installation in a directory that was previously added to `LDFLAGS` by another
library check.
# Windows
## Building Windows DLLs and C runtime (CRT) linkage issues
As a general rule, building a DLL with static CRT linkage is highly
discouraged, and intermixing CRTs in the same app is something to avoid at
any cost.
Reading and comprehending Microsoft Knowledge Base articles KB94248 and
KB140584 is a must for any Windows developer. Especially important is full
understanding if you are not going to follow the advice given above.
- [How To Use the C Run-Time](https://support.microsoft.com/help/94248/how-to-use-the-c-run-time)
- [Run-Time Library Compiler Options](https://docs.microsoft.com/cpp/build/reference/md-mt-ld-use-run-time-library)
- [Potential Errors Passing CRT Objects Across DLL Boundaries](https://docs.microsoft.com/cpp/c-runtime-library/potential-errors-passing-crt-objects-across-dll-boundaries)
If your app is misbehaving in some strange way, or it is suffering from memory
corruption, before asking for further help, please try first to rebuild every
single library your app uses as well as your app using the debug
multi-threaded dynamic C runtime.
If you get linkage errors read section 5.7 of the FAQ document.
## MinGW32
Make sure that MinGW32's bin directory is in the search path, for example:
```cmd
set PATH=c:\mingw32\bin;%PATH%
```
then run `mingw32-make mingw32` in the root dir. There are other
make targets available to build libcurl with more features, use:
- `mingw32-make mingw32-zlib` to build with Zlib support;
- `mingw32-make mingw32-ssl-zlib` to build with SSL and Zlib enabled;
- `mingw32-make mingw32-ssh2-ssl-zlib` to build with SSH2, SSL, Zlib;
- `mingw32-make mingw32-ssh2-ssl-sspi-zlib` to build with SSH2, SSL, Zlib
and SSPI support.
If you have any problems linking libraries or finding header files, be sure
to verify that the provided `Makefile.mk` files use the proper paths, and
adjust as necessary. It is also possible to override these paths with
environment variables, for example:
```cmd
set ZLIB_PATH=c:\zlib-1.2.12
set OPENSSL_PATH=c:\openssl-3.0.5
set LIBSSH2_PATH=c:\libssh2-1.10.0
```
It is also possible to build with other LDAP installations than MS LDAP;
currently it is possible to build with native Win32 OpenLDAP, or with the
*Novell CLDAP* SDK. If you want to use these you need to set these vars:
```cmd
set CPPFLAGS=-Ic:/openldap/include -DCURL_HAS_OPENLDAP_LDAPSDK
set LDFLAGS=-Lc:/openldap/lib
set LIBS=-lldap -llber
```
or for using the Novell SDK:
```cmd
set CPPFLAGS=-Ic:/openldapsdk/inc -DCURL_HAS_NOVELL_LDAPSDK
set LDFLAGS=-Lc:/openldapsdk/lib/mscvc
set LIBS=-lldapsdk -lldapssl -lldapx
```
If you want to enable LDAPS support then append `-ldaps` to the make target.
## Cygwin
Almost identical to the Unix installation. Run the configure script in the
curl source tree root with `sh configure`. Make sure you have the `sh`
executable in `/bin/` or you will see the configure fail toward the end.
Run `make`
## MS-DOS
Requires DJGPP in the search path and pointing to the Watt-32 stack via
`WATT_PATH=c:/djgpp/net/watt`.
Run `make -f Makefile.dist djgpp` in the root curl dir.
For build configuration options, please see the MinGW32 section.
Notes:
- DJGPP 2.04 beta has a `sscanf()` bug so the URL parsing is not done
properly. Use DJGPP 2.03 until they fix it.
- Compile Watt-32 (and OpenSSL) with the same version of DJGPP. Otherwise
things go wrong because things like FS-extensions and `errno` values have
been changed between releases.
## AmigaOS
Run `make -f Makefile.dist amiga` in the root curl dir.
For build configuration options, please see the MinGW32 section.
## Disabling Specific Protocols in Windows builds
The configure utility, unfortunately, is not available for the Windows
environment, therefore, you cannot use the various disable-protocol options of
the configure utility on this platform.
You can use specific defines to disable specific protocols and features. See
[CURL-DISABLE](CURL-DISABLE.md) for the full list.
If you want to set any of these defines you have the following options:
- Modify `lib/config-win32.h`
- Modify `lib/curl_setup.h`
- Modify `winbuild/Makefile.vc`
- Modify the "Preprocessor Definitions" in the libcurl project
Note: The pre-processor settings can be found using the Visual Studio IDE
under "Project -> Properties -> Configuration Properties -> C/C++ ->
Preprocessor".
## Using BSD-style lwIP instead of Winsock TCP/IP stack in Win32 builds
In order to compile libcurl and curl using BSD-style lwIP TCP/IP stack it is
necessary to make the definition of the preprocessor symbol `USE_LWIPSOCK`
visible to libcurl and curl compilation processes. To set this definition you
have the following alternatives:
- Modify `lib/config-win32.h` and `src/config-win32.h`
- Modify `winbuild/Makefile.vc`
- Modify the "Preprocessor Definitions" in the libcurl project
Note: The pre-processor settings can be found using the Visual Studio IDE
under "Project -> Properties -> Configuration Properties -> C/C++ ->
Preprocessor".
Once that libcurl has been built with BSD-style lwIP TCP/IP stack support, in
order to use it with your program it is mandatory that your program includes
lwIP header file `<lwip/opt.h>` (or another lwIP header that includes this)
before including any libcurl header. Your program does not need the
`USE_LWIPSOCK` preprocessor definition which is for libcurl internals only.
Compilation has been verified with lwIP 1.4.0.
This BSD-style lwIP TCP/IP stack support must be considered experimental given
that it has been verified that lwIP 1.4.0 still needs some polish, and libcurl
might yet need some additional adjustment.
## Important static libcurl usage note
When building an application that uses the static libcurl library on Windows,
you must add `-DCURL_STATICLIB` to your `CFLAGS`. Otherwise the linker will
look for dynamic import symbols.
## Legacy Windows and SSL
Schannel (from Windows SSPI), is the native SSL library in Windows. However,
Schannel in Windows <= XP is unable to connect to servers that
no longer support the legacy handshakes and algorithms used by those
versions. If you will be using curl in one of those earlier versions of
Windows you should choose another SSL backend such as OpenSSL.
# Apple Platforms (macOS, iOS, tvOS, watchOS, and their simulator counterparts)
On modern Apple operating systems, curl can be built to use Apple's SSL/TLS
implementation, Secure Transport, instead of OpenSSL. To build with Secure
Transport for SSL/TLS, use the configure option `--with-secure-transport`.
When Secure Transport is in use, the curl options `--cacert` and `--capath`
and their libcurl equivalents, will be ignored, because Secure Transport uses
the certificates stored in the Keychain to evaluate whether or not to trust
the server. This, of course, includes the root certificates that ship with the
OS. The `--cert` and `--engine` options, and their libcurl equivalents, are
currently unimplemented in curl with Secure Transport.
In general, a curl build for an Apple `ARCH/SDK/DEPLOYMENT_TARGET` combination
can be taken by providing appropriate values for `ARCH`, `SDK`, `DEPLOYMENT_TARGET`
below and running the commands:
```bash
# Set these three according to your needs
export ARCH=x86_64
export SDK=macosx
export DEPLOYMENT_TARGET=10.8
export CFLAGS="-arch $ARCH -isysroot $(xcrun -sdk $SDK --show-sdk-path) -m$SDK-version-min=$DEPLOYMENT_TARGET"
./configure --host=$ARCH-apple-darwin --prefix $(pwd)/artifacts --with-secure-transport
make -j8
make install
```
Above will build curl for macOS platform with `x86_64` architecture and `10.8` as deployment target.
Here is an example for iOS device:
```bash
export ARCH=arm64
export SDK=iphoneos
export DEPLOYMENT_TARGET=11.0
export CFLAGS="-arch $ARCH -isysroot $(xcrun -sdk $SDK --show-sdk-path) -m$SDK-version-min=$DEPLOYMENT_TARGET"
./configure --host=$ARCH-apple-darwin --prefix $(pwd)/artifacts --with-secure-transport
make -j8
make install
```
Another example for watchOS simulator for macs with Apple Silicon:
```bash
export ARCH=arm64
export SDK=watchsimulator
export DEPLOYMENT_TARGET=5.0
export CFLAGS="-arch $ARCH -isysroot $(xcrun -sdk $SDK --show-sdk-path) -m$SDK-version-min=$DEPLOYMENT_TARGET"
./configure --host=$ARCH-apple-darwin --prefix $(pwd)/artifacts --with-secure-transport
make -j8
make install
```
In all above, the built libraries and executables can be found in the
`artifacts` folder.
# Android
When building curl for Android it's recommended to use a Linux/macOS environment
since using curl's `configure` script is the easiest way to build curl
for Android. Before you can build curl for Android, you need to install the
Android NDK first. This can be done using the SDK Manager that is part of
Android Studio. Once you have installed the Android NDK, you need to figure out
where it has been installed and then set up some environment variables before
launching `configure`. On macOS, those variables could look like this to compile
for `aarch64` and API level 29:
```bash
export ANDROID_NDK_HOME=~/Library/Android/sdk/ndk/25.1.8937393 # Point into your NDK.
export HOST_TAG=darwin-x86_64 # Same tag for Apple Silicon. Other OS values here: https://developer.android.com/ndk/guides/other_build_systems#overview
export TOOLCHAIN=$ANDROID_NDK_HOME/toolchains/llvm/prebuilt/$HOST_TAG
export AR=$TOOLCHAIN/bin/llvm-ar
export AS=$TOOLCHAIN/bin/llvm-as
export CC=$TOOLCHAIN/bin/aarch64-linux-android21-clang
export CXX=$TOOLCHAIN/bin/aarch64-linux-android21-clang++
export LD=$TOOLCHAIN/bin/ld
export RANLIB=$TOOLCHAIN/bin/llvm-ranlib
export STRIP=$TOOLCHAIN/bin/llvm-strip
```
When building on Linux or targeting other API levels or architectures, you need
to adjust those variables accordingly. After that you can build curl like this:
./configure --host aarch64-linux-android --with-pic --disable-shared
Note that this will not give you SSL/TLS support. If you need SSL/TLS, you have
to build curl against a SSL/TLS layer, e.g. OpenSSL, because it's impossible for
curl to access Android's native SSL/TLS layer. To build curl for Android using
OpenSSL, follow the OpenSSL build instructions and then install `libssl.a` and
`libcrypto.a` to `$TOOLCHAIN/sysroot/usr/lib` and copy `include/openssl` to
`$TOOLCHAIN/sysroot/usr/include`. Now you can build curl for Android using
OpenSSL like this:
```bash
LIBS="-lssl -lcrypto -lc++" # For OpenSSL/BoringSSL. In general, you will need to the SSL/TLS layer's transitive dependencies if you are linking statically.
./configure --host aarch64-linux-android --with-pic --disable-shared --with-openssl="$TOOLCHAIN/sysroot/usr"
```
# IBM i
For IBM i (formerly OS/400), you can use curl in two different ways:
- Natively, running in the **ILE**. The obvious use is being able to call curl
from ILE C or RPG applications.
- You will need to build this from source. See `packages/OS400/README` for
the ILE specific build instructions.
- In the **PASE** environment, which runs AIX programs. curl will be built as
it would be on AIX.
- IBM provides builds of curl in their Yum repository for PASE software.
- To build from source, follow the Unix instructions.
There are some additional limitations and quirks with curl on this platform;
they affect both environments.
## Multi-threading notes
By default, jobs in IBM i will not start with threading enabled. (Exceptions
include interactive PASE sessions started by `QP2TERM` or SSH.) If you use
curl in an environment without threading when options like asynchronous DNS
were enabled, you will get messages like:
```
getaddrinfo() thread failed to start
```
Do not panic. curl and your program are not broken. You can fix this by:
- Set the environment variable `QIBM_MULTI_THREADED` to `Y` before starting
your program. This can be done at whatever scope you feel is appropriate.
- Alternatively, start the job with the `ALWMLTTHD` parameter set to `*YES`.
# Cross compile
Download and unpack the curl package.
`cd` to the new directory. (e.g. `cd curl-7.12.3`)
Set environment variables to point to the cross-compile toolchain and call
configure with any options you need. Be sure and specify the `--host` and
`--build` parameters at configuration time. The following script is an example
of cross-compiling for the IBM 405GP PowerPC processor using the toolchain on
Linux.
```bash
#! /bin/sh
export PATH=$PATH:/opt/hardhat/devkit/ppc/405/bin
export CPPFLAGS="-I/opt/hardhat/devkit/ppc/405/target/usr/include"
export AR=ppc_405-ar
export AS=ppc_405-as
export LD=ppc_405-ld
export RANLIB=ppc_405-ranlib
export CC=ppc_405-gcc
export NM=ppc_405-nm
./configure --target=powerpc-hardhat-linux
--host=powerpc-hardhat-linux
--build=i586-pc-linux-gnu
--prefix=/opt/hardhat/devkit/ppc/405/target/usr/local
--exec-prefix=/usr/local
```
You may also need to provide a parameter like `--with-random=/dev/urandom` to
configure as it cannot detect the presence of a random number generating
device for a target system. The `--prefix` parameter specifies where curl
will be installed. If `configure` completes successfully, do `make` and `make
install` as usual.
In some cases, you may be able to simplify the above commands to as little as:
./configure --host=ARCH-OS
# REDUCING SIZE
There are a number of configure options that can be used to reduce the size of
libcurl for embedded applications where binary size is an important factor.
First, be sure to set the `CFLAGS` variable when configuring with any relevant
compiler optimization flags to reduce the size of the binary. For gcc, this
would mean at minimum the -Os option, and potentially the `-march=X`,
`-mdynamic-no-pic` and `-flto` options as well, e.g.
./configure CFLAGS='-Os' LDFLAGS='-Wl,-Bsymbolic'...
Note that newer compilers often produce smaller code than older versions
due to improved optimization.
Be sure to specify as many `--disable-` and `--without-` flags on the
configure command-line as you can to disable all the libcurl features that you
know your application is not going to need. Besides specifying the
`--disable-PROTOCOL` flags for all the types of URLs your application will not
use, here are some other flags that can reduce the size of the library by
disabling support for some feature:
- `--disable-alt-svc` (HTTP Alt-Svc)
- `--disable-ares` (the C-ARES DNS library)
- `--disable-cookies` (HTTP cookies)
- `--disable-crypto-auth` (cryptographic authentication)
- `--disable-dateparse` (date parsing for time conditionals)
- `--disable-dnsshuffle` (internal server load spreading)
- `--disable-doh` (DNS-over-HTTP)
- `--disable-get-easy-options` (lookup easy options at runtime)
- `--disable-hsts` (HTTP Strict Transport Security)
- `--disable-http-auth` (all HTTP authentication)
- `--disable-ipv6` (IPv6)
- `--disable-libcurl-option` (--libcurl C code generation support)
- `--disable-manual` (built-in documentation)
- `--disable-netrc` (.netrc file)
- `--disable-ntlm-wb` (NTLM WinBind)
- `--disable-progress-meter` (graphical progress meter in library)
- `--disable-proxy` (HTTP and SOCKS proxies)
- `--disable-pthreads` (multi-threading)
- `--disable-socketpair` (socketpair for asynchronous name resolving)
- `--disable-threaded-resolver` (threaded name resolver)
- `--disable-tls-srp` (Secure Remote Password authentication for TLS)
- `--disable-unix-sockets` (UNIX sockets)
- `--disable-verbose` (eliminates debugging strings and error code strings)
- `--disable-versioned-symbols` (versioned symbols)
- `--enable-symbol-hiding` (eliminates unneeded symbols in the shared library)
- `--without-brotli` (Brotli on-the-fly decompression)
- `--without-libpsl` (Public Suffix List in cookies)
- `--without-nghttp2` (HTTP/2 using nghttp2)
- `--without-ngtcp2` (HTTP/2 using ngtcp2)
- `--without-zstd` (Zstd on-the-fly decompression)
- `--without-libidn2` (internationalized domain names)
- `--without-librtmp` (RTMP)
- `--without-ssl` (SSL/TLS)
- `--without-zlib` (on-the-fly decompression)
The GNU compiler and linker have a number of options that can reduce the
size of the libcurl dynamic libraries on some platforms even further.
Specify them by providing appropriate `CFLAGS` and `LDFLAGS` variables on
the configure command-line, e.g.
CFLAGS="-Os -ffunction-sections -fdata-sections
-fno-unwind-tables -fno-asynchronous-unwind-tables -flto"
LDFLAGS="-Wl,-s -Wl,-Bsymbolic -Wl,--gc-sections"
Be sure also to strip debugging symbols from your binaries after compiling
using 'strip' (or the appropriate variant if cross-compiling). If space is
really tight, you may be able to remove some unneeded sections of the shared
library using the -R option to objcopy (e.g. the .comment section).
Using these techniques it is possible to create a basic HTTP-only libcurl
shared library for i386 Linux platforms that is only 133 KiB in size
(as of libcurl version 7.80.0, using gcc 11.2.0).
You may find that statically linking libcurl to your application will result
in a lower total size than dynamically linking.
Note that the curl test harness can detect the use of some, but not all, of
the `--disable` statements suggested above. Use will cause tests relying on
those features to fail. The test harness can be manually forced to skip the
relevant tests by specifying certain key words on the `runtests.pl` command
line. Following is a list of appropriate key words for those configure options
that are not automatically detected:
- `--disable-cookies` !cookies
- `--disable-dateparse` !RETRY-AFTER !`CURLOPT_TIMECONDITION` !`CURLINFO_FILETIME` !`If-Modified-Since` !`curl_getdate` !`-z`
- `--disable-libcurl-option` !`--libcurl`
- `--disable-verbose` !verbose\ logs
# PORTS
This is a probably incomplete list of known CPU architectures and operating
systems that curl has been compiled for. If you know a system curl compiles
and runs on, that is not listed, please let us know!
## 92 Operating Systems
AIX, AmigaOS, Android, Aros, BeOS, Blackberry 10, Blackberry Tablet OS,
Cell OS, Chrome OS, Cisco IOS, Cygwin, DG/UX, Dragonfly BSD, DR DOS, eCOS,
FreeBSD, FreeDOS, FreeRTOS, Fuchsia, Garmin OS, Genode, Haiku, HardenedBSD,
HP-UX, Hurd, Illumos, Integrity, iOS, ipadOS, IRIX, Linux, Lua RTOS,
Mac OS 9, macOS, Mbed, Micrium, MINIX, MorphOS, MPE/iX, MS-DOS, NCR MP-RAS,
NetBSD, Netware, Nintendo Switch, NonStop OS, NuttX, Omni OS, OpenBSD,
OpenStep, Orbis OS, OS/2, OS/400, OS21, Plan 9, PlayStation Portable, QNX,
Qubes OS, ReactOS, Redox, RICS OS, RTEMS, Sailfish OS, SCO Unix, Serenity,
SINIX-Z, Solaris, SunOS, Syllable OS, Symbian, Tizen, TPF, Tru64, tvOS,
ucLinux, Ultrix, UNICOS, UnixWare, VMS, vxWorks, watchOS, WebOS,
Wii system software, Windows, Windows CE, Xbox System, Xenix, Zephyr,
z/OS, z/TPF, z/VM, z/VSE
## 26 CPU Architectures
Alpha, ARC, ARM, AVR32, CompactRISC, Elbrus, ETRAX, HP-PA, Itanium,
LoongArch, m68k, m88k, MicroBlaze, MIPS, Nios, OpenRISC, POWER, PowerPC,
RISC-V, s390, SH4, SPARC, Tilera, VAX, x86, Xtensa

@ -1,58 +0,0 @@
# curl internals
The canonical libcurl internals documentation is now in the [everything
curl](https://everything.curl.dev/internals) book. This file lists supported
versions of libs and build tools.
## Portability
We write curl and libcurl to compile with C89 compilers on 32-bit and up
machines. Most of libcurl assumes more or less POSIX compliance but that is
not a requirement.
We write libcurl to build and work with lots of third party tools, and we
want it to remain functional and buildable with these and later versions
(older versions may still work but is not what we work hard to maintain):
## Dependencies
We aim to support these or later versions.
- OpenSSL 0.9.7
- GnuTLS 3.1.10
- zlib 1.1.4
- libssh2 1.0
- c-ares 1.16.0
- libidn2 2.0.0
- wolfSSL 2.0.0
- OpenLDAP 2.0
- MIT Kerberos 1.2.4
- GSKit V5R3M0
- NSS 3.14.x
- Heimdal ?
- nghttp2 1.12.0
- WinSock 2.2 (on Windows 95+ and Windows CE .NET 4.1+)
## Build tools
When writing code (mostly for generating stuff included in release tarballs)
we use a few "build tools" and we make sure that we remain functional with
these versions:
- GNU Libtool 1.4.2
- GNU Autoconf 2.59
- GNU Automake 1.7
- GNU M4 1.4
- perl 5.6
- roffit 0.5
- nroff any version that supports `-man [in] [out]`
- cmake 3.7
Library Symbols
===============
All symbols used internally in libcurl must use a `Curl_` prefix if they are
used in more than a single file. Single-file symbols must be made static.
Public ("exported") symbols must use a `curl_` prefix. Public API functions
are marked with `CURL_EXTERN` in the public header files so that all others
can be hidden on platforms where this is possible.

@ -1,583 +0,0 @@
_ _ ____ _
___| | | | _ \| |
/ __| | | | |_) | |
| (__| |_| | _ <| |___
\___|\___/|_| \_\_____|
Known Bugs
These are problems and bugs known to exist at the time of this release. Feel
free to join in and help us correct one or more of these. Also be sure to
check the changelog of the current development status, as one or more of these
problems may have been fixed or changed somewhat since this was written.
1. HTTP
1.1 hyper memory-leaks
1.5 Expect-100 meets 417
2. TLS
2.3 Unable to use PKCS12 certificate with Secure Transport
2.4 Secure Transport will not import PKCS#12 client certificates without a password
2.5 Client cert handling with Issuer DN differs between backends
2.7 Client cert (MTLS) issues with Schannel
2.8 Schannel disable CURLOPT_SSL_VERIFYPEER and verify hostname
2.11 Schannel TLS 1.2 handshake bug in old Windows versions
2.12 FTPS with Schannel times out file list operation
2.13 CURLOPT_CERTINFO results in CURLE_OUT_OF_MEMORY with Schannel
3. Email protocols
3.1 IMAP SEARCH ALL truncated response
3.2 No disconnect command
3.3 POP3 expects "CRLF.CRLF" eob for some single-line responses
3.4 AUTH PLAIN for SMTP is not working on all servers
4. Command line
5. Build and portability issues
5.1 OS400 port requires deprecated IBM library
5.2 curl-config --libs contains private details
5.5 cannot handle Unicode arguments in non-Unicode builds on Windows
5.9 Utilize Requires.private directives in libcurl.pc
5.11 configure --with-gssapi with Heimdal is ignored on macOS
5.12 flaky CI builds
5.13 long paths are not fully supported on Windows
5.14 Windows Unicode builds use homedir in current locale
6. Authentication
6.1 NTLM authentication and unicode
6.2 MIT Kerberos for Windows build
6.3 NTLM in system context uses wrong name
6.4 Negotiate and Kerberos V5 need a fake user name
6.5 NTLM does not support password with § character
6.6 libcurl can fail to try alternatives with --proxy-any
6.7 Do not clear digest for single realm
6.9 SHA-256 digest not supported in Windows SSPI builds
6.10 curl never completes Negotiate over HTTP
6.11 Negotiate on Windows fails
6.12 cannot use Secure Transport with Crypto Token Kit
6.13 Negotiate against Hadoop HDFS
7. FTP
7.3 FTP with NOBODY and FAILONERROR
7.4 FTP with ACCT
7.11 FTPS upload data loss with TLS 1.3
7.12 FTPS directory listing hangs on Windows with Schannel
9. SFTP and SCP
9.1 SFTP does not do CURLOPT_POSTQUOTE correct
9.2 wolfssh: publickey auth does not work
9.3 Remote recursive folder creation with SFTP
9.4 libssh blocking and infinite loop problem
10. SOCKS
10.3 FTPS over SOCKS
11. Internals
11.2 error buffer not set if connection to multiple addresses fails
11.4 HTTP test server 'connection-monitor' problems
11.5 Connection information when using TCP Fast Open
12. LDAP
12.1 OpenLDAP hangs after returning results
12.2 LDAP on Windows does authentication wrong?
12.3 LDAP on Windows does not work
12.4 LDAPS with NSS is slow
13. TCP/IP
13.2 Trying local ports fails on Windows
15. CMake
15.2 support build with GnuTLS
15.3 unusable tool_hugehelp.c with MinGW
15.4 build docs/curl.1
15.6 uses -lpthread instead of Threads::Threads
15.7 generated .pc file contains strange entries
15.8 libcurl.pc uses absolute library paths
15.11 ExternalProject_Add does not set CURL_CA_PATH
15.13 CMake build with MIT Kerberos does not work
16. Applications
17. HTTP/2
17.2 HTTP/2 frames while in the connection pool kill reuse
17.3 ENHANCE_YOUR_CALM causes infinite retries
18. HTTP/3
18.1 connection migration does not work
==============================================================================
1. HTTP
1.1 hyper memory-leaks
Building curl with the hyper backend causes mysterious memory-leaks
https://github.com/curl/curl/issues/10803
1.5 Expect-100 meets 417
If an upload using Expect: 100-continue receives an HTTP 417 response, it
ought to be automatically resent without the Expect:. A workaround is for
the client application to redo the transfer after disabling Expect:.
https://curl.se/mail/archive-2008-02/0043.html
2. TLS
2.3 Unable to use PKCS12 certificate with Secure Transport
See https://github.com/curl/curl/issues/5403
2.4 Secure Transport will not import PKCS#12 client certificates without a password
libcurl calls SecPKCS12Import with the PKCS#12 client certificate, but that
function rejects certificates that do not have a password.
https://github.com/curl/curl/issues/1308
2.5 Client cert handling with Issuer DN differs between backends
When the specified client certificate does not match any of the
server-specified DNs, the OpenSSL and GnuTLS backends behave differently.
The github discussion may contain a solution.
See https://github.com/curl/curl/issues/1411
2.7 Client cert (MTLS) issues with Schannel
See https://github.com/curl/curl/issues/3145
2.8 Schannel disable CURLOPT_SSL_VERIFYPEER and verify hostname
This seems to be a limitation in the underlying Schannel API.
https://github.com/curl/curl/issues/3284
2.11 Schannel TLS 1.2 handshake bug in old Windows versions
In old versions of Windows such as 7 and 8.1 the Schannel TLS 1.2 handshake
implementation likely has a bug that can rarely cause the key exchange to
fail, resulting in error SEC_E_BUFFER_TOO_SMALL or SEC_E_MESSAGE_ALTERED.
https://github.com/curl/curl/issues/5488
2.12 FTPS with Schannel times out file list operation
"Instead of the command completing, it just sits there until the timeout
expires." - the same command line seems to work with other TLS backends and
other operating systems. See https://github.com/curl/curl/issues/5284.
2.13 CURLOPT_CERTINFO results in CURLE_OUT_OF_MEMORY with Schannel
https://github.com/curl/curl/issues/8741
3. Email protocols
3.1 IMAP SEARCH ALL truncated response
IMAP "SEARCH ALL" truncates output on large boxes. "A quick search of the
code reveals that pingpong.c contains some truncation code, at line 408, when
it deems the server response to be too large truncating it to 40 characters"
https://curl.se/bug/view.cgi?id=1366
3.2 No disconnect command
The disconnect commands (LOGOUT and QUIT) may not be sent by IMAP, POP3 and
SMTP if a failure occurs during the authentication phase of a connection.
3.3 POP3 expects "CRLF.CRLF" eob for some single-line responses
You have to tell libcurl not to expect a body, when dealing with one line
response commands. Please see the POP3 examples and test cases which show
this for the NOOP and DELE commands. https://curl.se/bug/?i=740
3.4 AUTH PLAIN for SMTP is not working on all servers
Specifying "--login-options AUTH=PLAIN" on the command line does not seem to
work correctly.
See https://github.com/curl/curl/issues/4080
4. Command line
5. Build and portability issues
5.1 OS400 port requires deprecated IBM library
curl for OS400 requires QADRT to build, which provides ASCII wrappers for
libc/POSIX functions in the ILE, but IBM no longer supports or even offers
this library to download.
See https://github.com/curl/curl/issues/5176
5.2 curl-config --libs contains private details
"curl-config --libs" will include details set in LDFLAGS when configure is
run that might be needed only for building libcurl. Further, curl-config
--cflags suffers from the same effects with CFLAGS/CPPFLAGS.
5.5 cannot handle Unicode arguments in non-Unicode builds on Windows
If a URL or filename cannot be encoded using the user's current codepage then
it can only be encoded properly in the Unicode character set. Windows uses
UTF-16 encoding for Unicode and stores it in wide characters, however curl
and libcurl are not equipped for that at the moment except when built with
_UNICODE and UNICODE defined. And, except for Cygwin, Windows cannot use UTF-8
as a locale.
https://curl.se/bug/?i=345
https://curl.se/bug/?i=731
https://curl.se/bug/?i=3747
5.9 Utilize Requires.private directives in libcurl.pc
https://github.com/curl/curl/issues/864
5.11 configure --with-gssapi with Heimdal is ignored on macOS
... unless you also pass --with-gssapi-libs
https://github.com/curl/curl/issues/3841
5.12 flaky CI builds
We run many CI builds for each commit and PR on github, and especially a
number of the Windows builds are flaky. This means that we rarely get all CI
builds go green and complete without errors. This is unfortunate as it makes
us sometimes miss actual build problems and it is surprising to newcomers to
the project who (rightfully) do not expect this.
See https://github.com/curl/curl/issues/6972
5.13 long paths are not fully supported on Windows
curl on Windows cannot access long paths (paths longer than 260 characters).
However, as a workaround, the Windows path prefix \\?\ which disables all path
interpretation may work to allow curl to access the path. For example:
\\?\c:\longpath.
See https://github.com/curl/curl/issues/8361
5.14 Windows Unicode builds use homedir in current locale
The Windows Unicode builds of curl use the current locale, but expect Unicode
UTF-8 encoded paths for internal use such as open, access and stat. The user's
home directory is retrieved via curl_getenv in the current locale and not as
UTF-8 encoded Unicode.
See https://github.com/curl/curl/pull/7252 and
https://github.com/curl/curl/pull/7281
6. Authentication
6.1 NTLM authentication and unicode
NTLM authentication involving unicode user name or password only works
properly if built with UNICODE defined together with the Schannel
backend. The original problem was mentioned in:
https://curl.se/mail/lib-2009-10/0024.html
https://curl.se/bug/view.cgi?id=896
The Schannel version verified to work as mentioned in
https://curl.se/mail/lib-2012-07/0073.html
6.2 MIT Kerberos for Windows build
libcurl fails to build with MIT Kerberos for Windows (KfW) due to KfW's
library header files exporting symbols/macros that should be kept private to
the KfW library. See ticket #5601 at https://krbdev.mit.edu/rt/
6.3 NTLM in system context uses wrong name
NTLM authentication using SSPI (on Windows) when (lib)curl is running in
"system context" will make it use wrong(?) user name - at least when compared
to what winhttp does. See https://curl.se/bug/view.cgi?id=535
6.4 Negotiate and Kerberos V5 need a fake user name
In order to get Negotiate (SPNEGO) authentication to work in HTTP or Kerberos
V5 in the email protocols, you need to provide a (fake) user name (this
concerns both curl and the lib) because the code wrongly only considers
authentication if there's a user name provided by setting
conn->bits.user_passwd in url.c https://curl.se/bug/view.cgi?id=440 How?
https://curl.se/mail/lib-2004-08/0182.html A possible solution is to
either modify this variable to be set or introduce a variable such as
new conn->bits.want_authentication which is set when any of the authentication
options are set.
6.5 NTLM does not support password with § character
https://github.com/curl/curl/issues/2120
6.6 libcurl can fail to try alternatives with --proxy-any
When connecting via a proxy using --proxy-any, a failure to establish an
authentication will cause libcurl to abort trying other options if the
failed method has a higher preference than the alternatives. As an example,
--proxy-any against a proxy which advertise Negotiate and NTLM, but which
fails to set up Kerberos authentication will not proceed to try authentication
using NTLM.
https://github.com/curl/curl/issues/876
6.7 Do not clear digest for single realm
https://github.com/curl/curl/issues/3267
6.9 SHA-256 digest not supported in Windows SSPI builds
Windows builds of curl that have SSPI enabled use the native Windows API calls
to create authentication strings. The call to InitializeSecurityContext fails
with SEC_E_QOP_NOT_SUPPORTED which causes curl to fail with CURLE_AUTH_ERROR.
Microsoft does not document supported digest algorithms and that SEC_E error
code is not a documented error for InitializeSecurityContext (digest).
https://github.com/curl/curl/issues/6302
6.10 curl never completes Negotiate over HTTP
Apparently it is not working correctly...?
See https://github.com/curl/curl/issues/5235
6.11 Negotiate on Windows fails
When using --negotiate (or NTLM) with curl on Windows, SSL/TLS handshake
fails despite having a valid kerberos ticket cached. Works without any issue
in Unix/Linux.
https://github.com/curl/curl/issues/5881
6.12 cannot use Secure Transport with Crypto Token Kit
https://github.com/curl/curl/issues/7048
6.13 Negotiate authentication against Hadoop HDFS
https://github.com/curl/curl/issues/8264
7. FTP
7.3 FTP with NOBODY and FAILONERROR
It seems sensible to be able to use CURLOPT_NOBODY and CURLOPT_FAILONERROR
with FTP to detect if a file exists or not, but it is not working:
https://curl.se/mail/lib-2008-07/0295.html
7.4 FTP with ACCT
When doing an operation over FTP that requires the ACCT command (but not when
logging in), the operation will fail since libcurl does not detect this and
thus fails to issue the correct command:
https://curl.se/bug/view.cgi?id=635
7.11 FTPS upload data loss with TLS 1.3
During FTPS upload curl does not attempt to read TLS handshake messages sent
after the initial handshake. OpenSSL servers running TLS 1.3 may send such a
message. When curl closes the upload connection if unread data has been
received (such as a TLS handshake message) then the TCP protocol sends an
RST to the server, which may cause the server to discard or truncate the
upload if it has not read all sent data yet, and then return an error to curl
on the control channel connection.
Since 7.78.0 this is mostly fixed. curl will do a single read before closing
TLS connections (which causes the TLS library to read handshake messages),
however there is still possibility of an RST if more messages need to be read
or a message arrives after the read but before close (network race condition).
https://github.com/curl/curl/issues/6149
7.12 FTPS directory listing hangs on Windows with Schannel
https://github.com/curl/curl/issues/9161
9. SFTP and SCP
9.1 SFTP does not do CURLOPT_POSTQUOTE correct
When libcurl sends CURLOPT_POSTQUOTE commands when connected to a SFTP server
using the multi interface, the commands are not being sent correctly and
instead the connection is "cancelled" (the operation is considered done)
prematurely. There is a half-baked (busy-looping) patch provided in the bug
report but it cannot be accepted as-is. See
https://curl.se/bug/view.cgi?id=748
9.2 wolfssh: publickey auth does not work
When building curl to use the wolfSSH backend for SFTP, the publickey
authentication does not work. This is simply functionality not written for curl
yet, the necessary API for make this work is provided by wolfSSH.
See https://github.com/curl/curl/issues/4820
9.3 Remote recursive folder creation with SFTP
On this servers, the curl fails to create directories on the remote server
even when the CURLOPT_FTP_CREATE_MISSING_DIRS option is set.
See https://github.com/curl/curl/issues/5204
9.4 libssh blocking and infinite loop problem
In the SSH_SFTP_INIT state for libssh, the ssh session working mode is set to
blocking mode. If the network is suddenly disconnected during sftp
transmission, curl will be stuck, even if curl is configured with a timeout.
https://github.com/curl/curl/issues/8632
10. SOCKS
10.3 FTPS over SOCKS
libcurl does not support FTPS over a SOCKS proxy.
11. Internals
11.2 error buffer not set if connection to multiple addresses fails
If you ask libcurl to resolve a hostname like example.com to IPv6 addresses
only. But you only have IPv4 connectivity. libcurl will correctly fail with
CURLE_COULDNT_CONNECT. But the error buffer set by CURLOPT_ERRORBUFFER
remains empty. Issue: https://github.com/curl/curl/issues/544
11.4 HTTP test server 'connection-monitor' problems
The 'connection-monitor' feature of the sws HTTP test server does not work
properly if some tests are run in unexpected order. Like 1509 and then 1525.
See https://github.com/curl/curl/issues/868
11.5 Connection information when using TCP Fast Open
CURLINFO_LOCAL_PORT (and possibly a few other) fails when TCP Fast Open is
enabled.
See https://github.com/curl/curl/issues/1332 and
https://github.com/curl/curl/issues/4296
12. LDAP
12.1 OpenLDAP hangs after returning results
By configuration defaults, OpenLDAP automatically chase referrals on
secondary socket descriptors. The OpenLDAP backend is asynchronous and thus
should monitor all socket descriptors involved. Currently, these secondary
descriptors are not monitored, causing OpenLDAP library to never receive
data from them.
As a temporary workaround, disable referrals chasing by configuration.
The fix is not easy: proper automatic referrals chasing requires a
synchronous bind callback and monitoring an arbitrary number of socket
descriptors for a single easy handle (currently limited to 5).
Generic LDAP is synchronous: OK.
See https://github.com/curl/curl/issues/622 and
https://curl.se/mail/lib-2016-01/0101.html
12.2 LDAP on Windows does authentication wrong?
https://github.com/curl/curl/issues/3116
12.3 LDAP on Windows does not work
A simple curl command line getting "ldap://ldap.forumsys.com" returns an
error that says "no memory" !
https://github.com/curl/curl/issues/4261
12.4 LDAPS with NSS is slow
See https://github.com/curl/curl/issues/5874
13. TCP/IP
13.2 Trying local ports fails on Windows
This makes '--local-port [range]' to not work since curl can't properly
detect if a port is already in use, so it'll try the first port, use that and
then subsequently fail anyway if that was actually in use.
https://github.com/curl/curl/issues/8112
15. CMake
15.2 support build with GnuTLS
15.3 unusable tool_hugehelp.c with MinGW
see https://github.com/curl/curl/issues/3125
15.4 build docs/curl.1
The cmake build does not create the docs/curl.1 file and therefore must rely on
it being there already. This makes the --manual option not work and test
cases like 1139 cannot function.
15.6 uses -lpthread instead of Threads::Threads
See https://github.com/curl/curl/issues/6166
15.7 generated .pc file contains strange entries
The Libs.private field of the generated .pc file contains -lgcc -lgcc_s -lc
-lgcc -lgcc_s
See https://github.com/curl/curl/issues/6167
15.8 libcurl.pc uses absolute library paths
The libcurl.pc file generated by cmake contains things like Libs.private:
/usr/lib64/libssl.so /usr/lib64/libcrypto.so /usr/lib64/libz.so. The
autotools equivalent would say Libs.private: -lssl -lcrypto -lz
See https://github.com/curl/curl/issues/6169
15.11 ExternalProject_Add does not set CURL_CA_PATH
CURL_CA_BUNDLE and CURL_CA_PATH are not set properly when cmake's
ExternalProject_Add is used to build curl as a dependency.
See https://github.com/curl/curl/issues/6313
15.13 CMake build with MIT Kerberos does not work
Minimum CMake version was bumped in curl 7.71.0 (#5358) Since CMake 3.2
try_compile started respecting the CMAKE_EXE_FLAGS. The code dealing with
MIT Kerberos detection sets few variables to potentially weird mix of space,
and ;-separated flags. It had to blow up at some point. All the CMake checks
that involve compilation are doomed from that point, the configured tree
cannot be built.
https://github.com/curl/curl/issues/6904
16. Applications
17. HTTP/2
17.2 HTTP/2 frames while in the connection pool kill reuse
If the server sends HTTP/2 frames (like for example an HTTP/2 PING frame) to
curl while the connection is held in curl's connection pool, the socket will
be found readable when considered for reuse and that makes curl think it is
dead and then it will be closed and a new connection gets created instead.
This is *best* fixed by adding monitoring to connections while they are kept
in the pool so that pings can be responded to appropriately.
17.3 ENHANCE_YOUR_CALM causes infinite retries
Infinite retries with 2 parallel requests on one connection receiving GOAWAY
with ENHANCE_YOUR_CALM error code.
See https://github.com/curl/curl/issues/5119
18. HTTP/3
18.1 connection migration does not work
https://github.com/curl/curl/issues/7695

@ -1,285 +0,0 @@
_ _ ____ _
___| | | | _ \| |
/ __| | | | |_) | |
| (__| |_| | _ <| |___
\___|\___/|_| \_\_____|
MAIL ETIQUETTE
1. About the lists
1.1 Mailing Lists
1.2 Netiquette
1.3 Do Not Mail a Single Individual
1.4 Subscription Required
1.5 Moderation of new posters
1.6 Handling trolls and spam
1.7 How to unsubscribe
1.8 I posted, now what?
1.9 Your emails are public
2. Sending mail
2.1 Reply or New Mail
2.2 Reply to the List
2.3 Use a Sensible Subject
2.4 Do Not Top-Post
2.5 HTML is not for mails
2.6 Quoting
2.7 Digest
2.8 Please Tell Us How You Solved The Problem
==============================================================================
1. About the lists
1.1 Mailing Lists
The mailing lists we have are all listed and described at
https://curl.se/mail/
Each mailing list is targeted to a specific set of users and subjects,
please use the one or the ones that suit you the most.
Each mailing list has hundreds up to thousands of readers, meaning that each
mail sent will be received and read by a large number of people. People
from various cultures, regions, religions and continents.
1.2 Netiquette
Netiquette is a common term for how to behave on the Internet. Of course, in
each particular group and subculture there will be differences in what is
acceptable and what is considered good manners.
This document outlines what we in the curl project consider to be good
etiquette, and primarily this focus on how to behave on and how to use our
mailing lists.
1.3 Do Not Mail a Single Individual
Many people send one question to one person. One person gets many mails, and
there is only one person who can give you a reply. The question may be
something that other people would also like to ask. These other people have
no way to read the reply, but to ask the one person the question. The one
person consequently gets overloaded with mail.
If you really want to contact an individual and perhaps pay for his or her
services, by all means go ahead, but if it's just another curl question,
take it to a suitable list instead.
1.4 Subscription Required
All curl mailing lists require that you are subscribed to allow a mail to go
through to all the subscribers.
If you post without being subscribed (or from a different mail address than
the one you are subscribed with), your mail will simply be silently
discarded. You have to subscribe first, then post.
The reason for this unfortunate and strict subscription policy is of course
to stop spam from pestering the lists.
1.5 Moderation of new posters
Several of the curl mailing lists automatically make all posts from new
subscribers be moderated. This means that after you have subscribed and
sent your first mail to a list, that mail will not be let through to the
list until a mailing list administrator has verified that it is OK and
permits it to get posted.
Once a first post has been made that proves the sender is actually talking
about curl-related subjects, the moderation "flag" will be switched off and
future posts will go through without being moderated.
The reason for this moderation policy is that we do suffer from spammers who
actually subscribe and send spam to our lists.
1.6 Handling trolls and spam
Despite our good intentions and hard work to keep spam off the lists and to
maintain a friendly and positive atmosphere, there will be times when spam
and or trolls get through.
Troll - "someone who posts inflammatory, extraneous, or off-topic messages
in an online community"
Spam - "use of electronic messaging systems to send unsolicited bulk
messages"
No matter what, we NEVER EVER respond to trolls or spammers on the list. If
you believe the list admin should do something in particular, contact them
off-list. The subject will be taken care of as much as possible to prevent
repeated offenses, but responding on the list to such messages never leads to
anything good and only puts the light even more on the offender: which was
the entire purpose of it getting sent to the list in the first place.
Do not feed the trolls.
1.7 How to unsubscribe
You can unsubscribe the same way you subscribed in the first place. You go
to the page for the particular mailing list you are subscribed to and you enter
your email address and password and press the unsubscribe button.
Also, the instructions to unsubscribe are included in the headers of every
mail that is sent out to all curl related mailing lists and there's a footer
in each mail that links to the "admin" page on which you can unsubscribe and
change other options.
You NEVER EVER email the mailing list requesting someone else to take you off
the list.
1.8 I posted, now what?
If you are not subscribed with the same email address that you used to send
the email, your post will just be silently discarded.
If you posted for the first time to the mailing list, you first need to wait
for an administrator to allow your email to go through (moderated). This
normally happens quickly but in case we are asleep, you may have to wait a
few hours.
Once your email goes through it is sent out to several hundred or even
thousands of recipients. Your email may cover an area that not that many
people know about or are interested in. Or possibly the person who knows
about it is on vacation or under a heavy work load right now. You may have
to wait for a response and you should not expect to get a response at all.
Ideally, you get an answer within a couple of days.
You do yourself and all of us a service when you include as many details as
possible already in your first email. Mention your operating system and
environment. Tell us which curl version you are using and tell us what you
did, what happened and what you expected would happen. Preferably, show us
what you did with details enough to allow others to help point out the
problem or repeat the steps in their locations.
Failing to include details will only delay responses and make people respond
and ask for more details and you will have to send a follow-up email that
includes them.
Expect the responses to primarily help YOU debug the issue, or ask YOU
questions that can lead you or others towards a solution or explanation to
whatever you experience.
If you are a repeat offender to the guidelines outlined in this document,
chances are that people will ignore you at will and your chances to get
responses in the future will greatly diminish.
1.9 Your emails are public
Your email, its contents and all its headers and the details in those
headers will be received by every subscriber of the mailing list that you
send your email to.
Your email as sent to a curl mailing list will end up in mail archives, on
the curl website and elsewhere, for others to see and read. Today and in
the future. In addition to the archives, the mail is sent out to thousands
of individuals. There is no way to undo a sent email.
When sending emails to a curl mailing list, do not include sensitive
information such as user names and passwords; use fake ones, temporary ones
or just remove them completely from the mail. Note that this includes base64
encoded HTTP Basic auth headers.
This public nature of the curl mailing lists makes automatically inserted mail
footers about mails being "private" or "only meant for the recipient" or
similar even more silly than usual. Because they are absolutely not private
when sent to a public mailing list.
2. Sending mail
2.1 Reply or New Mail
Please do not reply to an existing message as a short-cut to post a message
to the lists.
Many mail programs and web archivers use information within mails to keep
them together as "threads", as collections of posts that discuss a certain
subject. If you do not intend to reply on the same or similar subject, do not
just hit reply on an existing mail and change the subject, create a new mail.
2.2 Reply to the List
When replying to a message from the list, make sure that you do "group
reply" or "reply to all", and not just reply to the author of the single
mail you reply to.
We are actively discouraging replying back to the single person by setting
the Reply-To: field in outgoing mails back to the mailing list address,
making it harder for people to mail the author directly, if only by mistake.
2.3 Use a Sensible Subject
Please use a subject of the mail that makes sense and that is related to the
contents of your mail. It makes it a lot easier to find your mail afterwards
and it makes it easier to track mail threads and topics.
2.4 Do Not Top-Post
If you reply to a message, do not use top-posting. Top-posting is when you
write the new text at the top of a mail and you insert the previous quoted
mail conversation below. It forces users to read the mail in a backwards
order to properly understand it.
This is why top posting is so bad (in top posting order):
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in email?
Apart from the screwed up read order (especially when mixed together in a
thread when someone responds using the mandated bottom-posting style), it
also makes it impossible to quote only parts of the original mail.
When you reply to a mail. You let the mail client insert the previous mail
quoted. Then you put the cursor on the first line of the mail and you move
down through the mail, deleting all parts of the quotes that do not add
context for your comments. When you want to add a comment you do so, inline,
right after the quotes that relate to your comment. Then you continue
downwards again.
When most of the quotes have been removed and you have added your own words,
you are done.
2.5 HTML is not for mails
Please switch off those HTML encoded messages. You can mail all those funny
mails to your friends. We speak plain text mails.
2.6 Quoting
Quote as little as possible. Just enough to provide the context you cannot
leave out. A lengthy description can be found here:
https://www.netmeister.org/news/learn2quote.html
2.7 Digest
We allow subscribers to subscribe to the "digest" version of the mailing
lists. A digest is a collection of mails lumped together in one single mail.
Should you decide to reply to a mail sent out as a digest, there are two
things you MUST consider if you really really cannot subscribe normally
instead:
Cut off all mails and chatter that is not related to the mail you want to
reply to.
Change the subject name to something sensible and related to the subject,
preferably even the actual subject of the single mail you wanted to reply to
2.8 Please Tell Us How You Solved The Problem
Many people mail questions to the list, people spend some of their time and
make an effort in providing good answers to these questions.
If you are the one who asks, please consider responding once more in case
one of the hints was what solved your problems. The guys who write answers
feel good to know that they provided a good answer and that you fixed the
problem. Far too often, the person who asked the question is never heard from
again, and we never get to know if they are gone because the problem was
solved or perhaps because the problem was unsolvable.
Getting the solution posted also helps other users that experience the same
problem(s). They get to see (possibly in the web archives) that the
suggested fixes actually have helped at least one person.

@ -1,27 +0,0 @@
# MQTT in curl
## Usage
A plain "GET" subscribes to the topic and prints all published messages.
Doing a "POST" publishes the post data to the topic and exits.
Example subscribe:
curl mqtt://host/home/bedroom/temp
Example publish:
curl -d 75 mqtt://host/home/bedroom/dimmer
## What does curl deliver as a response to a subscribe
It outputs two bytes topic length (MSB | LSB), the topic followed by the
payload.
## Caveats
Remaining limitations:
- Only QoS level 0 is implemented for publish
- No way to set retain flag for publish
- No TLS (mqtts) support
- Naive EAGAIN handling will not handle split messages

@ -1,134 +0,0 @@
#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################
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cd cmdline-opts && $(MAKE)
html: $(HTMLPAGES)
cd libcurl && $(MAKE) html
pdf: $(PDFPAGES)
cd libcurl && $(MAKE) pdf
.1.html:
$(MAN2HTML)
.1.pdf:
@(foo=`echo $@ | sed -e 's/\.[0-9]$$//g'`; \
groff -Tps -man $< >$$foo.ps; \
ps2pdf $$foo.ps $@; \
rm $$foo.ps; \
echo "converted $< to $@")
distclean:
rm -f $(CLEANFILES)

@ -1,950 +0,0 @@
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@SET_MAKE@
#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
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cscopelist-am: $(am__tagged_files)
list='$(am__tagged_files)'; \
case "$(srcdir)" in \
[\\/]* | ?:[\\/]*) sdir="$(srcdir)" ;; \
*) sdir=$(subdir)/$(srcdir) ;; \
esac; \
for i in $$list; do \
if test -f "$$i"; then \
echo "$(subdir)/$$i"; \
else \
echo "$$sdir/$$i"; \
fi; \
done >> $(top_builddir)/cscope.files
distclean-tags:
-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
distdir: $(BUILT_SOURCES)
$(MAKE) $(AM_MAKEFLAGS) distdir-am
distdir-am: $(DISTFILES)
@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
list='$(DISTFILES)'; \
dist_files=`for file in $$list; do echo $$file; done | \
sed -e "s|^$$srcdirstrip/||;t" \
-e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
case $$dist_files in \
*/*) $(MKDIR_P) `echo "$$dist_files" | \
sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
sort -u` ;; \
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find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
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if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
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cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
else \
test -f "$(distdir)/$$file" \
|| cp -p $$d/$$file "$(distdir)/$$file" \
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($(am__cd) $$subdir && \
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check-am: all-am
check: check-recursive
all-am: Makefile $(MANS)
installdirs: installdirs-recursive
installdirs-am:
for dir in "$(DESTDIR)$(man1dir)"; do \
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install-data: install-data-recursive
uninstall: uninstall-recursive
install-am: all-am
@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
installcheck: installcheck-recursive
install-strip:
if test -z '$(STRIP)'; then \
$(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
install; \
else \
$(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
"INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
fi
mostlyclean-generic:
clean-generic:
-test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
distclean-generic:
-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
maintainer-clean-generic:
@echo "This command is intended for maintainers to use"
@echo "it deletes files that may require special tools to rebuild."
clean: clean-recursive
clean-am: clean-generic clean-libtool mostlyclean-am
distclean-am: clean-am distclean-generic distclean-tags
dvi: dvi-recursive
dvi-am:
html-am:
info: info-recursive
info-am:
install-data-am: install-man
install-dvi: install-dvi-recursive
install-dvi-am:
install-exec-am:
install-html: install-html-recursive
install-html-am:
install-info: install-info-recursive
install-info-am:
install-man: install-man1
install-pdf: install-pdf-recursive
install-pdf-am:
install-ps: install-ps-recursive
install-ps-am:
installcheck-am:
maintainer-clean: maintainer-clean-recursive
-rm -f Makefile
maintainer-clean-am: distclean-am maintainer-clean-generic
mostlyclean: mostlyclean-recursive
mostlyclean-am: mostlyclean-generic mostlyclean-libtool
pdf-am:
ps: ps-recursive
ps-am:
uninstall-am: uninstall-man
uninstall-man: uninstall-man1
.MAKE: $(am__recursive_targets) install-am install-strip
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check-am clean clean-generic clean-libtool cscopelist-am ctags \
ctags-am distclean distclean-generic distclean-libtool \
distclean-tags distdir dvi dvi-am html html-am info info-am \
install install-am install-data install-data-am install-dvi \
install-dvi-am install-exec install-exec-am install-html \
install-html-am install-info install-info-am install-man \
install-man1 install-pdf install-pdf-am install-ps \
install-ps-am install-strip installcheck installcheck-am \
installdirs installdirs-am maintainer-clean \
maintainer-clean-generic mostlyclean mostlyclean-generic \
mostlyclean-libtool pdf pdf-am ps ps-am tags tags-am uninstall \
uninstall-am uninstall-man uninstall-man1
.PRECIOUS: Makefile
# $(abs_builddir) is to disable VPATH when searching for this file, which
# would otherwise find the copy in $(srcdir) which breaks the $(HUGE)
# rule in src/Makefile.am in out-of-tree builds that references the file in the
# build directory.
#
# First, seed the used copy of curl.1 with the prebuilt copy (in an out-of-tree
# build), then run make recursively to rebuild it only if its dependencies
# have changed.
$(abs_builddir)/curl.1:
if test "$(top_builddir)x" != "$(top_srcdir)x" -a -e "$(srcdir)/curl.1"; then \
$(INSTALL_DATA) "$(srcdir)/curl.1" $@; fi
cd cmdline-opts && $(MAKE)
html: $(HTMLPAGES)
cd libcurl && $(MAKE) html
pdf: $(PDFPAGES)
cd libcurl && $(MAKE) pdf
.1.html:
$(MAN2HTML)
.1.pdf:
@(foo=`echo $@ | sed -e 's/\.[0-9]$$//g'`; \
groff -Tps -man $< >$$foo.ps; \
ps2pdf $$foo.ps $@; \
rm $$foo.ps; \
echo "converted $< to $@")
distclean:
rm -f $(CLEANFILES)
# Tell versions [3.59,3.63) of GNU make to not export all variables.
# Otherwise a system limit (for SysV at least) may be exceeded.
.NOEXPORT:

@ -1,110 +0,0 @@
# Adding a new protocol?
Every once in a while, someone comes up with the idea of adding support for yet
another protocol to curl. After all, curl already supports 25 something
protocols and it is the Internet transfer machine for the world.
In the curl project we love protocols and we love supporting many protocols
and doing it well.
So how do you proceed to add a new protocol and what are the requirements?
## No fixed set of requirements
This document is an attempt to describe things to consider. There is no
checklist of the twenty-seven things you need to cross off. We view the entire
effort as a whole and then judge if it seems to be the right thing - for
now. The more things that look right, fit our patterns and are done in ways
that align with our thinking, the better are the chances that we will agree
that supporting this protocol is a grand idea.
## Mutual benefit is preferred
curl is not here for your protocol. Your protocol is not here for curl. The
best cooperation and end result occur when all involved parties mutually see
and agree that supporting this protocol in curl would be good for everyone.
Heck, for the world.
Consider "selling us" the idea that we need an implementation merged in curl,
to be fairly important. *Why* do we want curl to support this new protocol?
## Protocol requirements
### Client-side
The protocol implementation is for a client's side of a "communication
session".
### Transfer oriented
The protocol itself should be focused on *transfers*. Be it uploads or
downloads or both. It should at least be possible to view the transfers as
such, like we can view reading emails over POP3 as a download and sending
emails over SMTP as an upload.
If you cannot even shoehorn the protocol into a transfer focused view, then
you are up for a tough argument.
### URL
There should be a documented URL format. If there is an RFC for it there is no
question about it but the syntax does not have to be a published RFC. It could
be enough if it is already in use by other implementations.
If you make up the syntax just in order to be able to propose it to curl, then
you are in a bad place. URLs are designed and defined for interoperability.
There should at least be a good chance that other clients and servers can be
implemented supporting the same URL syntax and work the same or similar way.
URLs work on registered 'schemes'. There is a register of [all officially
recognized
schemes](https://www.iana.org/assignments/uri-schemes/uri-schemes.xhtml). If
your protocol is not in there, is it really a protocol we want?
### Wide and public use
The protocol shall already be used or have an expectation of getting used
widely. Experimental protocols are better off worked on in experiments first,
to prove themselves before they are adopted by curl.
## Code
Of course the code needs to be written, provided, licensed agreeably and it
should follow our code guidelines and review comments have to be dealt with.
If the implementation needs third party code, that third party code should not
have noticeably lesser standards than the curl project itself.
## Tests
As much of the protocol implementation as possible needs to be verified by
curl test cases. We must have the implementation get tested by CI jobs,
torture tests and more.
We have experienced many times in the past how new implementations were brought
to curl and immediately once the code had been merged, the originator vanished
from the face of the earth. That is fine, but we need to take the necessary
precautions so when it happens we are still fine.
Our test infrastructure is powerful enough to test just about every possible
protocol - but it might require a bit of an effort to make it happen.
## Documentation
We cannot assume that users are particularly familiar with details and
peculiarities of the protocol. It needs documentation.
Maybe it even needs some internal documentation so that the developers who
will try to debug something five years from now can figure out functionality a
little easier!
The protocol specification itself should be freely available without requiring
a non-disclosure agreement or similar.
## Do not compare
We are constantly raising the bar and we are constantly improving the
project. A lot of things we did in the past would not be acceptable if done
today. Therefore, you might be tempted to use shortcuts or "hacks" you can
spot other - existing - protocol implementations have used, but there is
nothing to gain from that. The bar has been raised. Former "cheats" will not be
tolerated anymore.

@ -1,50 +0,0 @@
# Parallel transfers
curl 7.66.0 introduced support for doing multiple transfers simultaneously; in
parallel.
## -Z, --parallel
When this command line option is used, curl will perform the transfers given
to it at the same time. It will do up to `--parallel-max` concurrent
transfers, with a default value of 50.
## Progress meter
The progress meter that is displayed when doing parallel transfers is
completely different than the regular one used for each single transfer.
It shows:
o percent download (if known, which means *all* transfers need to have a
known size)
o percent upload (if known, with the same caveat as for download)
o total amount of downloaded data
o total amount of uploaded data
o number of transfers to perform
o number of concurrent transfers being transferred right now
o number of transfers queued up waiting to start
o total time all transfers are expected to take (if sizes are known)
o current time the transfers have spent so far
o estimated time left (if sizes are known)
o current transfer speed (the faster of upload/download speeds measured over
the last few seconds)
Example:
DL% UL% Dled Uled Xfers Live Qd Total Current Left Speed
72 -- 37.9G 0 101 30 23 0:00:55 0:00:34 0:00:22 2752M
## Behavior differences
Connections are shared fine between different easy handles, but the
"authentication contexts" are not. So for example doing HTTP Digest auth with
one handle for a particular transfer and then continue on with another handle
that reuses the same connection, the second handle cannot send the necessary
Authorization header at once since the context is only kept in the original
easy handle.
To fix this, the authorization state could be made possible to share with the
share API as well, as a context per origin + path (realm?) basically.
Visible in test 153, 1412 and more.

@ -1,12 +0,0 @@
![curl logo](https://curl.se/logo/curl-logo.svg)
# Documentation
you will find a mix of various documentation in this directory and
subdirectories, using several different formats. Some of them are not ideal
for reading directly in your browser.
If you would rather see the rendered version of the documentation, check out the
curl website's [documentation section](https://curl.se/docs/) for
general curl stuff or the [libcurl section](https://curl.se/libcurl/) for
libcurl related documentation.

@ -1,117 +0,0 @@
curl release procedure - how to do a release
============================================
in the source code repo
-----------------------
- run `./scripts/copyright.pl` and correct possible omissions
- edit `RELEASE-NOTES` to be accurate
- update `docs/THANKS`
- make sure all relevant changes are committed on the master branch
- tag the git repo in this style: `git tag -a curl-7_34_0`. -a annotates the
tag and we use underscores instead of dots in the version number. Make sure
the tag is GPG signed (using -s).
- run `./maketgz 7.34.0` to build the release tarballs. It is important that
you run this on a machine with the correct set of autotools etc installed
as this is what then will be shipped and used by most users on \*nix like
systems.
- push the git commits and the new tag
- GPG sign the 4 tarballs as `maketgz` suggests
- upload the 8 resulting files to the primary download directory
in the curl-www repo
--------------------
- edit `Makefile` (version number and date),
- edit `_newslog.html` (announce the new release) and
- edit `_changes.html` (insert changes+bugfixes from RELEASE-NOTES)
- commit all local changes
- tag the repo with the same name as used for the source repo.
- make sure all relevant changes are committed and pushed on the master branch
(the website then updates its contents automatically)
on GitHub
---------
- edit the newly made release tag so that it is listed as the latest release
inform
------
- send an email to curl-users, curl-announce and curl-library. Insert the
RELEASE-NOTES into the mail.
celebrate
---------
- suitable beverage intake is encouraged for the festivities
curl release scheduling
=======================
Release Cycle
-------------
We normally do releases every 8 weeks on Wednesdays. If important problems
arise, we can insert releases outside the schedule or we can move the release
date.
Each 8 week (56 days) release cycle is divided into three distinct periods:
- During the first 10 calendar days after a release, we are in "cool down". We
do not merge features but only bug-fixes. If a regression is reported, we
might do a follow-up patch release.
- During the following 3 weeks (21 days) there is a feature window: we allow
new features and changes to curl and libcurl. If we accept any such changes,
we bump the minor number used for the next release.
- During the next 25 days we are in feature freeze. We do not merge any
features or changes, and we only focus on fixing bugs and polishing things
to make the pending release a solid one.
If a future release date happens to end up on a "bad date", like in the middle
of common public holidays or when the lead release manager is unavailable, the
release date can be moved forwards or backwards a full week. This is then
advertised well in advance.
Critical problems
-----------------
We can break the release cycle and do a patch release at any point if a
critical enough problem is reported. There is no exact definition of how to
assess such criticality, but if an issue is highly disturbing or has a
security impact on a large enough share of the user population it might
qualify.
If you think an issue qualifies, bring it to the curl-library mailing list and
push for it.
Coming dates
------------
Based on the description above, here are some planned release dates (at the
time of this writing):
- May 17, 2023
- July 19, 2023
- September 6, 2023
- November 1, 2023
- December 27, 2023
- February 21, 2024
- April 17, 2024
- June 12, 2024

@ -1,24 +0,0 @@
# curl the next few years - perhaps
Roadmap of things Daniel Stenberg wants to work on next. It is intended to
serve as a guideline for others for information, feedback and possible
participation.
## "Complete" the HTTP/3 support
curl has experimental support for HTTP/3 since a good while back. There are
some functionality missing and once the final specs are published we want to
eventually remove the "experimental" label from this functionality.
## HTTPS DNS records
As a DNS version of alt-svc and also a pre-requisite for ECH (see below).
See: https://datatracker.ietf.org/doc/html/draft-ietf-dnsop-svcb-https-02
## ECH (Encrypted Client Hello - formerly known as ESNI)
See Daniel's post on [Support of Encrypted
SNI](https://curl.se/mail/lib-2019-03/0000.html) on the mailing list.
Initial work exists in [PR 4011](https://github.com/curl/curl/pull/4011)

@ -1,26 +0,0 @@
# Rustls
[Rustls is a TLS backend written in Rust](https://docs.rs/rustls/). Curl can
be built to use it as an alternative to OpenSSL or other TLS backends. We use
the [rustls-ffi C bindings](https://github.com/rustls/rustls-ffi/). This
version of curl depends on version v0.9.2 of rustls-ffi.
# Building with rustls
First, [install Rust](https://rustup.rs/).
Next, check out, build, and install the appropriate version of rustls-ffi:
% cargo install cbindgen
% git clone https://github.com/rustls/rustls-ffi -b v0.9.2
% cd rustls-ffi
% make
% make DESTDIR=${HOME}/rustls-ffi-built/ install
Now configure and build curl with rustls:
% git clone https://github.com/curl/curl
% cd curl
% autoreconf -fi
% ./configure --with-rustls=${HOME}/rustls-ffi-built
% make

@ -1,129 +0,0 @@
# Anatomy of a curl security advisory
As described in the `SECURITY-PROCESS.md` document, when a security
vulnerability has been reported to the project and confirmed, we author an
advisory document for for the issue. It should ideally be written in
cooperation with the reporter to make sure all the angles and details of the
problem are gathered and described correctly and succinctly.
## New document
A security advisory for curl is created in the `docs/` folder in the
[curl-www](https://github.com/curl/curl-www) repository. It should be named
`$CVEID.md` where `$CVEID` is the full CVE Id that has been registered for the
flaw. Like `CVE-2016-0755`. The `.md` extension of course means that the
document is written using markdown.
The standard way to go about this is to first write the `VULNERABILITY`
section for the document, so that there is description of the flaw available,
then paste this description into the CVE Id request.
### `vuln.pm`
The new issue should be entered at the top of the list in the file `vuln.pm`
in the same directory. It holds a large array with all published curl
vulnerabilities. All fields should be filled in accordingly, separated by a
pipe character (`|`).
The eleven fields for each CVE in `vuln.pm` are, in order:
HTML page name, first vulnerable version, last vulnerable version, name of
the issue, CVE Id, announce date (`YYYYMMDD`), report to the project date
(`YYYYMMDD`), CWE, awarded reward amount (USD), area (single word), C-issue
(`-` if not a C issue at all, `OVERFLOW` , `OVERREAD`, `DOUBLE_FREE`,
`USE_AFTER_FREE`, `NULL_MISTAKE`, `UNINIT`)
### `Makefile`
The new CVE web page file name needs to be added in the `Makefile`'s `CVELIST`
macro.
When the markdown is in place and the `Makefile` and `vuln.pm` are updated,
all other files and metadata for all curl advisories and versions get
generated automatically using those files.
## Document format
The easy way is to start with a recent previously published advisory and just
blank out old texts and save it using a new name. Save the subtitles and
general layout.
Some details and metadata will be extracted from this document so it is
important to stick to the existing format.
The first list must be the title of the issue.
### VULNERABILITY
The first subtitle should be `VULNERABILITY`. That should then include a
through and detailed description of the flaw. Including how it can be
triggered and maybe something about what might happen if triggered or
exploited.
### INFO
The next section is `INFO` which adds meta data information about the flaw. It
specifically mentions the official CVE Id for the issue and it must list the
CWE Id, starting on its own line. We write CWE identifiers in advisories with
the full (official) explanation on the right side of a colon. Like this:
`CWE-305: Authentication Bypass by Primary Weakness`
### AFFECTED VERSIONS
The third section first lists what versions that are affected, then adds
clarity by stressing what versions that are *not* affected. A third line adds
information about which specific git commit that introduced the vulnerability.
The `Introduced-in` commit should be a full URL that displays the commit, but
should work as a stand-alone commit hash if everything up to the last slash is
cut out.
An example using the correct syntax:
~~~
- Affected versions: curl 7.16.1 to and including 7.88.1
- Not affected versions: curl < 7.16.1 and curl >= 8.0.0
- Introduced-in: https://github.com/curl/curl/commit/2147284cad
~~~
### THE SOLUTION
This section describes and discusses the fix. The only mandatory information
here is the link to the git commit that fixes the problem.
The `Fixed-in` value should be a full URL that displays the commit, but should
work as a stand-alone commit hash if everything up to the last slash is cut
out.
Example:
`- Fixed-in: https://github.com/curl/curl/commit/af369db4d3833272b8ed`
### RECOMMENDATIONS
This section lists the recommended actions for the users in a top to bottom
priority order and should ideally contain three items but no less than two.
The top two are almost always `upgrade curl to version XXX` and `apply the
patch to your local version`.
### TIMELINE
Detail when this report was received in the project. When package distributors
were notified (via the distros mailing list or similar)
When the advisory and fixed version are released.
### CREDITS
Mention the reporter and patch author at least, then everyone else involved
you think deserves a mention.
If you want to mention more than one name, separate the names with comma
(`,`).
~~~
- Reported-by: Full Name
- Patched-by: Full Name
~~~

@ -1,271 +0,0 @@
# curl security process
This document describes how security vulnerabilities should be handled in the
curl project.
## Publishing Information
All known and public curl or libcurl related vulnerabilities are listed on
[the curl website security page](https://curl.se/docs/security.html).
Security vulnerabilities **should not** be entered in the project's public bug
tracker.
## Vulnerability Handling
The typical process for handling a new security vulnerability is as follows.
No information should be made public about a vulnerability until it is
formally announced at the end of this process. That means, for example, that a
bug tracker entry must NOT be created to track the issue since that will make
the issue public and it should not be discussed on any of the project's public
mailing lists. Messages associated with any commits should not make any
reference to the security nature of the commit if done prior to the public
announcement.
- The person discovering the issue, the reporter, reports the vulnerability on
[HackerOne](https://hackerone.com/curl). Issues filed there reach a handful
of selected and trusted people.
- Messages that do not relate to the reporting or managing of an undisclosed
security vulnerability in curl or libcurl are ignored and no further action
is required.
- A person in the security team responds to the original report to acknowledge
that a human has seen the report.
- The security team investigates the report and either rejects it or accepts
it. See below for examples of problems that are not considered
vulnerabilities.
- If the report is rejected, the team writes to the reporter to explain why.
- If the report is accepted, the team writes to the reporter to let them
know it is accepted and that they are working on a fix.
- The security team discusses the problem, works out a fix, considers the
impact of the problem and suggests a release schedule. This discussion
should involve the reporter as much as possible.
- The release of the information should be "as soon as possible" and is most
often synchronized with an upcoming release that contains the fix. If the
reporter, or anyone else involved, thinks the next planned release is too
far away, then a separate earlier release should be considered.
- Write a security advisory draft about the problem that explains what the
problem is, its impact, which versions it affects, solutions or workarounds,
when the release is out and make sure to credit all contributors properly.
Figure out the CWE (Common Weakness Enumeration) number for the flaw. See
[SECURITY-ADVISORY](SECURITY-ADVISORY.md) for help on creating the advisory.
- Request a CVE number from
[HackerOne](https://docs.hackerone.com/programs/cve-requests.html)
- Update the "security advisory" with the CVE number.
- The security team commits the fix in a private branch. The commit message
should ideally contain the CVE number. If the severity level of the issue is
set to Low or Medium, the fix is allowed to get merged into the master
repository via a normal PR - but without mentioning it being a security
vulnerability.
- The monetary reward part of the bug-bounty is managed by the Internet Bug
Bounty team and the reporter is asked to request the reward from them after
the issue has been completely handled and published by curl.
- No more than 10 days before release, inform
[distros@openwall](https://oss-security.openwall.org/wiki/mailing-lists/distros)
to prepare them about the upcoming public security vulnerability
announcement - attach the advisory draft for information with CVE and
current patch. 'distros' does not accept an embargo longer than 14 days and
they do not care for Windows-specific flaws.
- No more than 48 hours before the release, the private branch is merged into
the master branch and pushed. Once pushed, the information is accessible to
the public and the actual release should follow suit immediately afterwards.
The time between the push and the release is used for final tests and
reviews.
- The project team creates a release that includes the fix.
- The project team announces the release and the vulnerability to the world in
the same manner we always announce releases. It gets sent to the
curl-announce, curl-library and curl-users mailing lists.
- The security web page on the website should get the new vulnerability
mentioned.
## security (at curl dot se)
This is a private mailing list for discussions on and about curl security
issues.
Who is on this list? There are a couple of criteria you must meet, and then we
might ask you to join the list or you can ask to join it. It really is not a
formal process. We basically only require that you have a long-term presence
in the curl project and you have shown an understanding for the project and
its way of working. You must have been around for a good while and you should
have no plans of vanishing in the near future.
We do not make the list of participants public mostly because it tends to vary
somewhat over time and a list somewhere will only risk getting outdated.
## Publishing Security Advisories
1. Write up the security advisory, using markdown syntax. Use the same
subtitles as last time to maintain consistency.
2. Name the advisory file after the allocated CVE id.
3. Add a line on the top of the array in `curl-www/docs/vuln.pm`.
4. Put the new advisory markdown file in the `curl-www/docs/` directory. Add it
to the git repository.
5. Run `make` in your local web checkout and verify that things look fine.
6. On security advisory release day, push the changes on the curl-www
repository's remote master branch.
## HackerOne
Request the issue to be disclosed. If there are sensitive details present in
the report and discussion, those should be redacted from the disclosure. The
default policy is to disclose as much as possible as soon as the vulnerability
has been published.
## Bug Bounty
See [BUG-BOUNTY](https://curl.se/docs/bugbounty.html) for details on the
bug bounty program.
# Severity levels
The curl project's security team rates security problems using four severity
levels depending how serious we consider the problem to be. We use **Low**,
**Medium**, **High** and **Critical**. We refrain from using numerical scoring
of vulnerabilities.
When deciding severity level on a particular issue, we take all the factors
into account: attack vector, attack complexity, required privileges, necessary
build configuration, protocols involved, platform specifics and also what
effects a possible exploit or trigger of the issue can lead do, including
confidentiality, integrity or availability problems.
## Low
This is a security problem that is truly hard or unlikely to exploit or
trigger. Due to timing, platform requirements or the fact that options or
protocols involved are rare etc. [Past
example](https://curl.se/docs/CVE-2022-43552.html)
## Medium
This is a security problem that is less hard than **Low** to exploit or
trigger. Less strict timing, wider platforms availability or involving more
widely used options or protocols. A problem that usually needs something else
to also happen to become serious. [Past
example](https://curl.se/docs/CVE-2022-32206.html)
## High
This issue in itself a serious problem with real world impact. Flaws that can
easily compromise the confidentiality, integrity or availability of resources.
Exploiting or triggering this problem is not hard. [Past
example](https://curl.se/docs/CVE-2019-3822.html)
## Critical
Easily exploitable by a remote unauthenticated attacker and lead to system
compromise (arbitrary code execution) without requiring user interaction, with
a common configuration on a popular platform. This issue has few restrictions
and requirements and can be exploited easily using most curl configurations.
No past curl vulnerability has had this severity level.
# Not security issues
This is an incomplete list of issues that are not considered vulnerabilities.
## Small memory leaks
We do not consider a small memory leak a security problem; even if the amount
of allocated memory grows by a small amount every now and then. Long-living
applications and services already need to have counter-measures and deal with
growing memory usage, be it leaks or just increased use. A small memory or
resource leak is then expected to *not* cause a security problem.
Of course there can be a discussion if a leak is small or not. A large leak
can be considered a security problem due to the DOS risk. If leaked memory
contains sensitive data it might also qualify as a security problem.
## Never-ending transfers
We do not consider flaws that cause a transfer to never end to be a security
problem. There are already several benign and likely reasons for transfers to
stall and never end, so applications that cannot deal with never-ending
transfers already need to have counter-measures established.
If the problem avoids the regular counter-measures when it causes a never-
ending transfer, it might be a security problem.
## Not practically possible
If the flaw or vulnerability cannot practically get executed on existing
hardware it is not a security problem.
## API misuse
If a reported issue only triggers by an application using the API in a way
that is not documented to work or even documented to not work, it is probably
not going to be considered a security problem. We only guarantee secure and
proper functionality when the APIs are used as expected and documented.
There can be a discussion about what the documentation actually means and how
to interpret the text, which might end up with us still agreeing that it is a
security problem.
## Local attackers already present
When an issue can only be attacked or misused by an attacker present on the
local system or network, the bar is raised. If a local user wrongfully has
elevated rights on your system enough to attack curl, they can probably
already do much worse harm and the problem is not really in curl.
## Experiments
Vulnerabilities in features which are off by default (in the build) and
documented as experimental, are not eligible for a reward and we do not
consider them security problems.
## URL inconsistencies
URL parser inconsistencies between browsers and curl are expected and are not
considered security vulnerabilities. The WHATWG URL Specification and RFC
3986+ (the plus meaning that it is an extended version) [are not completely
interoperable](https://github.com/bagder/docs/blob/master/URL-interop.md).
Obvious parser bugs can still be vulnerabilities of course.
## Visible command line arguments
The curl command blanks the contents of a number of command line arguments to
prevent them from appearing in process listings. It does not blank all
arguments even if some of them that are not blanked might contain sensitive
data. We consider this functionality a best-effort and omissions are not
security vulnerabilities.
- not all systems allow the arguments to be blanked in the first place
- since curl blanks the argument itself they will be readable for a short
moment no matter what
- virtually every argument can contain sensitive data, depending on use
- blanking all arguments would make it impractical for users to differentiate
curl command lines in process listings
## Busy-loops
Busy-loops that consume 100% CPU time but eventually end (perhaps due to a set
timeout value or otherwise) are not considered security problems. Applications
are supposed to already handle situations when the transfer loop legitimately
consumes 100% CPU time, so while a prolonged such busy-loop is a nasty bug, we
do not consider it a security problem.

@ -1,97 +0,0 @@
_ _ ____ _
___| | | | _ \| |
/ __| | | | |_) | |
| (__| |_| | _ <| |___
\___|\___/|_| \_\_____|
# SSL problems
First, let's establish that we often refer to TLS and SSL interchangeably as
SSL here. The current protocol is called TLS, it was called SSL a long time
ago.
There are several known reasons why a connection that involves SSL might
fail. This is a document that attempts to detail the most common ones and
how to mitigate them.
## CA certs
CA certs are used to digitally verify the server's certificate. You need a
"ca bundle" for this. See lots of more details on this in the `SSLCERTS`
document.
## CA bundle missing intermediate certificates
When using said CA bundle to verify a server cert, you will experience
problems if your CA store does not contain the certificates for the
intermediates if the server does not provide them.
The TLS protocol mandates that the intermediate certificates are sent in the
handshake, but as browsers have ways to survive or work around such
omissions, missing intermediates in TLS handshakes still happen that
browser-users will not notice.
Browsers work around this problem in two ways: they cache intermediate
certificates from previous transfers and some implement the TLS "AIA"
extension that lets the client explicitly download such certificates on
demand.
## Protocol version
Some broken servers fail to support the protocol negotiation properly that
SSL servers are supposed to handle. This may cause the connection to fail
completely. Sometimes you may need to explicitly select a SSL version to use
when connecting to make the connection succeed.
An additional complication can be that modern SSL libraries sometimes are
built with support for older SSL and TLS versions disabled!
All versions of SSL and the TLS versions before 1.2 are considered insecure
and should be avoided. Use TLS 1.2 or later.
## Ciphers
Clients give servers a list of ciphers to select from. If the list does not
include any ciphers the server wants/can use, the connection handshake
fails.
curl has recently disabled the user of a whole bunch of seriously insecure
ciphers from its default set (slightly depending on SSL backend in use).
You may have to explicitly provide an alternative list of ciphers for curl
to use to allow the server to use a weak cipher for you.
Note that these weak ciphers are identified as flawed. For example, this
includes symmetric ciphers with less than 128 bit keys and RC4.
Schannel in Windows XP is not able to connect to servers that no longer
support the legacy handshakes and algorithms used by those versions, so we
advise against building curl to use Schannel on really old Windows versions.
Reference: [Prohibiting RC4 Cipher
Suites](https://datatracker.ietf.org/doc/html/draft-popov-tls-prohibiting-rc4-01)
## Allow BEAST
BEAST is the name of a TLS 1.0 attack that surfaced 2011. When adding means
to mitigate this attack, it turned out that some broken servers out there in
the wild did not work properly with the BEAST mitigation in place.
To make such broken servers work, the --ssl-allow-beast option was
introduced. Exactly as it sounds, it re-introduces the BEAST vulnerability
but on the other hand it allows curl to connect to that kind of strange
servers.
## Disabling certificate revocation checks
Some SSL backends may do certificate revocation checks (CRL, OCSP, etc)
depending on the OS or build configuration. The --ssl-no-revoke option was
introduced in 7.44.0 to disable revocation checking but currently is only
supported for Schannel (the native Windows SSL library), with an exception
in the case of Windows' Untrusted Publishers block list which it seems cannot
be bypassed. This option may have broader support to accommodate other SSL
backends in the future.
References:
https://curl.se/docs/ssl-compared.html

@ -1,175 +0,0 @@
SSL Certificate Verification
============================
SSL is TLS
----------
SSL is the old name. It is called TLS these days.
Native SSL
----------
If libcurl was built with Schannel or Secure Transport support (the native SSL
libraries included in Windows and Mac OS X), then this does not apply to
you. Scroll down for details on how the OS-native engines handle SSL
certificates. If you are not sure, then run "curl -V" and read the results. If
the version string says `Schannel` in it, then it was built with Schannel
support.
It is about trust
-----------------
This system is about trust. In your local CA certificate store you have certs
from *trusted* Certificate Authorities that you then can use to verify that
the server certificates you see are valid. They are signed by one of the
certificate authorities you trust.
Which certificate authorities do you trust? You can decide to trust the same
set of companies your operating system trusts, or the set one of the known
browsers trust. That is basically trust via someone else you trust. You should
just be aware that modern operating systems and browsers are setup to trust
*hundreds* of companies and in recent years several certificate authorities
have been found untrustworthy.
Certificate Verification
------------------------
libcurl performs peer SSL certificate verification by default. This is done
by using a CA certificate store that the SSL library can use to make sure the
peer's server certificate is valid.
If you communicate with HTTPS, FTPS or other TLS-using servers using
certificates in the CA store, you can be sure that the remote server really is
the one it claims to be.
If the remote server uses a self-signed certificate, if you do not install a CA
cert store, if the server uses a certificate signed by a CA that is not
included in the store you use or if the remote host is an impostor
impersonating your favorite site, and you want to transfer files from this
server, do one of the following:
1. Tell libcurl to *not* verify the peer. With libcurl you disable this with
`curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, FALSE);`
With the curl command line tool, you disable this with `-k`/`--insecure`.
2. Get a CA certificate that can verify the remote server and use the proper
option to point out this CA cert for verification when connecting. For
libcurl hackers: `curl_easy_setopt(curl, CURLOPT_CAINFO, cacert);`
With the curl command line tool: `--cacert [file]`
3. Add the CA cert for your server to the existing default CA certificate
store. The default CA certificate store can be changed at compile time with
the following configure options:
`--with-ca-bundle=FILE`: use the specified file as the CA certificate
store. CA certificates need to be concatenated in PEM format into this
file.
`--with-ca-path=PATH`: use the specified path as CA certificate store. CA
certificates need to be stored as individual PEM files in this directory.
You may need to run c_rehash after adding files there.
If neither of the two options is specified, configure will try to
auto-detect a setting. It's also possible to explicitly not set any
default store but rely on the built in default the crypto library may
provide instead. You can achieve that by passing both
`--without-ca-bundle` and `--without-ca-path` to the configure script.
If you use Internet Explorer, this is one way to get extract the CA cert
for a particular server:
- View the certificate by double-clicking the padlock
- Find out where the CA certificate is kept (Certificate>
Authority Information Access>URL)
- Get a copy of the crt file using curl
- Convert it from crt to PEM using the OpenSSL tool:
`openssl x509 -inform DES -in yourdownloaded.crt -out outcert.pem -text`
- Add the `outcert.pem` to the CA certificate store or use it stand-alone
as described below.
If you use the `openssl` tool, this is one way to get extract the CA cert
for a particular server:
- `openssl s_client -showcerts -servername server -connect server:443 > cacert.pem`
- type "quit", followed by the "ENTER" key
- The certificate will have "BEGIN CERTIFICATE" and "END CERTIFICATE"
markers.
- If you want to see the data in the certificate, you can do: `openssl
x509 -inform PEM -in certfile -text -out certdata` where `certfile` is
the cert you extracted from logfile. Look in `certdata`.
- If you want to trust the certificate, you can add it to your CA
certificate store or use it stand-alone as described. Just remember that
the security is no better than the way you obtained the certificate.
4. If you are using the curl command line tool, you can specify your own CA
cert file by setting the environment variable `CURL_CA_BUNDLE` to the path
of your choice.
If you are using the curl command line tool on Windows, curl will search
for a CA cert file named "curl-ca-bundle.crt" in these directories and in
this order:
1. application's directory
2. current working directory
3. Windows System directory (e.g. C:\windows\system32)
4. Windows Directory (e.g. C:\windows)
5. all directories along %PATH%
5. Get a better/different/newer CA cert bundle! One option is to extract the
one a recent Firefox browser uses by running 'make ca-bundle' in the curl
build tree root, or possibly download a version that was generated this
way for you: [CA Extract](https://curl.se/docs/caextract.html)
Neglecting to use one of the above methods when dealing with a server using a
certificate that is not signed by one of the certificates in the installed CA
certificate store, will cause SSL to report an error ("certificate verify
failed") during the handshake and SSL will then refuse further communication
with that server.
Certificate Verification with NSS
---------------------------------
If libcurl was built with NSS support, then depending on the OS distribution,
it is probably required to take some additional steps to use the system-wide
CA cert db. Red Hat ships with an additional module, libnsspem.so, which
enables NSS to read the OpenSSL PEM CA bundle. On openSUSE you can install
p11-kit-nss-trust which makes NSS use the system wide CA certificate
store. NSS also has a new [database
format](https://wiki.mozilla.org/NSS_Shared_DB).
Starting with version 7.19.7, libcurl automatically adds the `sql:` prefix to
the certificate database directory (either the set default `/etc/pki/nssdb` or
the directory configured with the `SSL_DIR` environment variable). To check
which certificate database format your distribution provides, examine the
default certificate database location: `/etc/pki/nssdb`; the new certificate
database format can be identified by the filenames `cert9.db`, `key4.db`,
`pkcs11.txt`; filenames of older versions are `cert8.db`, `key3.db`,
`secmod.db`.
Certificate Verification with Schannel and Secure Transport
-----------------------------------------------------------
If libcurl was built with Schannel (Microsoft's native TLS engine) or Secure
Transport (Apple's native TLS engine) support, then libcurl will still perform
peer certificate verification, but instead of using a CA cert bundle, it will
use the certificates that are built into the OS. These are the same
certificates that appear in the Internet Options control panel (under Windows)
or Keychain Access application (under OS X). Any custom security rules for
certificates will be honored.
Schannel will run CRL checks on certificates unless peer verification is
disabled. Secure Transport on iOS will run OCSP checks on certificates unless
peer verification is disabled. Secure Transport on OS X will run either OCSP
or CRL checks on certificates if those features are enabled, and this behavior
can be adjusted in the preferences of Keychain Access.
HTTPS proxy
-----------
Since version 7.52.0, curl can do HTTPS to the proxy separately from the
connection to the server. This TLS connection is handled separately from the
server connection so instead of `--insecure` and `--cacert` to control the
certificate verification, you use `--proxy-insecure` and `--proxy-cacert`.
With these options, you make sure that the TLS connection and the trust of the
proxy can be kept totally separate from the TLS connection to the server.

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# The Art Of Scripting HTTP Requests Using Curl
## Background
This document assumes that you are familiar with HTML and general networking.
The increasing amount of applications moving to the web has made "HTTP
Scripting" more frequently requested and wanted. To be able to automatically
extract information from the web, to fake users, to post or upload data to
web servers are all important tasks today.
Curl is a command line tool for doing all sorts of URL manipulations and
transfers, but this particular document will focus on how to use it when
doing HTTP requests for fun and profit. This documents assumes that you know
how to invoke `curl --help` or `curl --manual` to get basic information about
it.
Curl is not written to do everything for you. It makes the requests, it gets
the data, it sends data and it retrieves the information. You probably need
to glue everything together using some kind of script language or repeated
manual invokes.
## The HTTP Protocol
HTTP is the protocol used to fetch data from web servers. It is a simple
protocol that is built upon TCP/IP. The protocol also allows information to
get sent to the server from the client using a few different methods, as will
be shown here.
HTTP is plain ASCII text lines being sent by the client to a server to
request a particular action, and then the server replies a few text lines
before the actual requested content is sent to the client.
The client, curl, sends an HTTP request. The request contains a method (like
GET, POST, HEAD etc), a number of request headers and sometimes a request
body. The HTTP server responds with a status line (indicating if things went
well), response headers and most often also a response body. The "body" part
is the plain data you requested, like the actual HTML or the image etc.
## See the Protocol
Using curl's option [`--verbose`](https://curl.se/docs/manpage.html#-v)
(`-v` as a short option) will display what kind of commands curl sends to the
server, as well as a few other informational texts.
`--verbose` is the single most useful option when it comes to debug or even
understand the curl<->server interaction.
Sometimes even `--verbose` is not enough. Then
[`--trace`](https://curl.se/docs/manpage.html#-trace) and
[`--trace-ascii`](https://curl.se/docs/manpage.html#--trace-ascii)
offer even more details as they show **everything** curl sends and
receives. Use it like this:
curl --trace-ascii debugdump.txt http://www.example.com/
## See the Timing
Many times you may wonder what exactly is taking all the time, or you just
want to know the amount of milliseconds between two points in a transfer. For
those, and other similar situations, the
[`--trace-time`](https://curl.se/docs/manpage.html#--trace-time) option
is what you need. It will prepend the time to each trace output line:
curl --trace-ascii d.txt --trace-time http://example.com/
## See the Response
By default curl sends the response to stdout. You need to redirect it
somewhere to avoid that, most often that is done with `-o` or `-O`.
# URL
## Spec
The Uniform Resource Locator format is how you specify the address of a
particular resource on the Internet. You know these, you have seen URLs like
https://curl.se or https://example.com a million times. RFC 3986 is the
canonical spec. And yeah, the formal name is not URL, it is URI.
## Host
The host name is usually resolved using DNS or your /etc/hosts file to an IP
address and that is what curl will communicate with. Alternatively you specify
the IP address directly in the URL instead of a name.
For development and other trying out situations, you can point to a different
IP address for a host name than what would otherwise be used, by using curl's
[`--resolve`](https://curl.se/docs/manpage.html#--resolve) option:
curl --resolve www.example.org:80:127.0.0.1 http://www.example.org/
## Port number
Each protocol curl supports operates on a default port number, be it over TCP
or in some cases UDP. Normally you do not have to take that into
consideration, but at times you run test servers on other ports or
similar. Then you can specify the port number in the URL with a colon and a
number immediately following the host name. Like when doing HTTP to port
1234:
curl http://www.example.org:1234/
The port number you specify in the URL is the number that the server uses to
offer its services. Sometimes you may use a proxy, and then you may
need to specify that proxy's port number separately from what curl needs to
connect to the server. Like when using an HTTP proxy on port 4321:
curl --proxy http://proxy.example.org:4321 http://remote.example.org/
## User name and password
Some services are setup to require HTTP authentication and then you need to
provide name and password which is then transferred to the remote site in
various ways depending on the exact authentication protocol used.
You can opt to either insert the user and password in the URL or you can
provide them separately:
curl http://user:password@example.org/
or
curl -u user:password http://example.org/
You need to pay attention that this kind of HTTP authentication is not what
is usually done and requested by user-oriented websites these days. They tend
to use forms and cookies instead.
## Path part
The path part is just sent off to the server to request that it sends back
the associated response. The path is what is to the right side of the slash
that follows the host name and possibly port number.
# Fetch a page
## GET
The simplest and most common request/operation made using HTTP is to GET a
URL. The URL could itself refer to a web page, an image or a file. The client
issues a GET request to the server and receives the document it asked for.
If you issue the command line
curl https://curl.se
you get a web page returned in your terminal window. The entire HTML document
that that URL holds.
All HTTP replies contain a set of response headers that are normally hidden,
use curl's [`--include`](https://curl.se/docs/manpage.html#-i) (`-i`)
option to display them as well as the rest of the document.
## HEAD
You can ask the remote server for ONLY the headers by using the
[`--head`](https://curl.se/docs/manpage.html#-I) (`-I`) option which
will make curl issue a HEAD request. In some special cases servers deny the
HEAD method while others still work, which is a particular kind of annoyance.
The HEAD method is defined and made so that the server returns the headers
exactly the way it would do for a GET, but without a body. It means that you
may see a `Content-Length:` in the response headers, but there must not be an
actual body in the HEAD response.
## Multiple URLs in a single command line
A single curl command line may involve one or many URLs. The most common case
is probably to just use one, but you can specify any amount of URLs. Yes
any. No limits. You will then get requests repeated over and over for all the
given URLs.
Example, send two GET requests:
curl http://url1.example.com http://url2.example.com
If you use [`--data`](https://curl.se/docs/manpage.html#-d) to POST to
the URL, using multiple URLs means that you send that same POST to all the
given URLs.
Example, send two POSTs:
curl --data name=curl http://url1.example.com http://url2.example.com
## Multiple HTTP methods in a single command line
Sometimes you need to operate on several URLs in a single command line and do
different HTTP methods on each. For this, you will enjoy the
[`--next`](https://curl.se/docs/manpage.html#-:) option. It is basically
a separator that separates a bunch of options from the next. All the URLs
before `--next` will get the same method and will get all the POST data
merged into one.
When curl reaches the `--next` on the command line, it will sort of reset the
method and the POST data and allow a new set.
Perhaps this is best shown with a few examples. To send first a HEAD and then
a GET:
curl -I http://example.com --next http://example.com
To first send a POST and then a GET:
curl -d score=10 http://example.com/post.cgi --next http://example.com/results.html
# HTML forms
## Forms explained
Forms are the general way a website can present an HTML page with fields for
the user to enter data in, and then press some kind of 'OK' or 'Submit'
button to get that data sent to the server. The server then typically uses
the posted data to decide how to act. Like using the entered words to search
in a database, or to add the info in a bug tracking system, display the
entered address on a map or using the info as a login-prompt verifying that
the user is allowed to see what it is about to see.
Of course there has to be some kind of program on the server end to receive
the data you send. You cannot just invent something out of the air.
## GET
A GET-form uses the method GET, as specified in HTML like:
```html
<form method="GET" action="junk.cgi">
<input type=text name="birthyear">
<input type=submit name=press value="OK">
</form>
```
In your favorite browser, this form will appear with a text box to fill in
and a press-button labeled "OK". If you fill in '1905' and press the OK
button, your browser will then create a new URL to get for you. The URL will
get `junk.cgi?birthyear=1905&press=OK` appended to the path part of the
previous URL.
If the original form was seen on the page `www.example.com/when/birth.html`,
the second page you will get will become
`www.example.com/when/junk.cgi?birthyear=1905&press=OK`.
Most search engines work this way.
To make curl do the GET form post for you, just enter the expected created
URL:
curl "http://www.example.com/when/junk.cgi?birthyear=1905&press=OK"
## POST
The GET method makes all input field names get displayed in the URL field of
your browser. That is generally a good thing when you want to be able to
bookmark that page with your given data, but it is an obvious disadvantage if
you entered secret information in one of the fields or if there are a large
amount of fields creating a long and unreadable URL.
The HTTP protocol then offers the POST method. This way the client sends the
data separated from the URL and thus you will not see any of it in the URL
address field.
The form would look similar to the previous one:
```html
<form method="POST" action="junk.cgi">
<input type=text name="birthyear">
<input type=submit name=press value=" OK ">
</form>
```
And to use curl to post this form with the same data filled in as before, we
could do it like:
curl --data "birthyear=1905&press=%20OK%20" http://www.example.com/when/junk.cgi
This kind of POST will use the Content-Type
`application/x-www-form-urlencoded` and is the most widely used POST kind.
The data you send to the server MUST already be properly encoded, curl will
not do that for you. For example, if you want the data to contain a space,
you need to replace that space with `%20`, etc. Failing to comply with this will
most likely cause your data to be received wrongly and messed up.
Recent curl versions can in fact url-encode POST data for you, like this:
curl --data-urlencode "name=I am Daniel" http://www.example.com
If you repeat `--data` several times on the command line, curl will
concatenate all the given data pieces - and put a `&` symbol between each
data segment.
## File Upload POST
Back in late 1995 they defined an additional way to post data over HTTP. It
is documented in the RFC 1867, why this method sometimes is referred to as
RFC1867-posting.
This method is mainly designed to better support file uploads. A form that
allows a user to upload a file could be written like this in HTML:
```html
<form method="POST" enctype='multipart/form-data' action="upload.cgi">
<input type=file name=upload>
<input type=submit name=press value="OK">
</form>
```
This clearly shows that the Content-Type about to be sent is
`multipart/form-data`.
To post to a form like this with curl, you enter a command line like:
curl --form upload=@localfilename --form press=OK [URL]
## Hidden Fields
A common way for HTML based applications to pass state information between
pages is to add hidden fields to the forms. Hidden fields are already filled
in, they are not displayed to the user and they get passed along just as all
the other fields.
A similar example form with one visible field, one hidden field and one
submit button could look like:
```html
<form method="POST" action="foobar.cgi">
<input type=text name="birthyear">
<input type=hidden name="person" value="daniel">
<input type=submit name="press" value="OK">
</form>
```
To POST this with curl, you will not have to think about if the fields are
hidden or not. To curl they are all the same:
curl --data "birthyear=1905&press=OK&person=daniel" [URL]
## Figure Out What A POST Looks Like
When you are about to fill in a form and send it to a server by using curl
instead of a browser, you are of course interested in sending a POST exactly
the way your browser does.
An easy way to get to see this, is to save the HTML page with the form on
your local disk, modify the 'method' to a GET, and press the submit button
(you could also change the action URL if you want to).
You will then clearly see the data get appended to the URL, separated with a
`?`-letter as GET forms are supposed to.
# HTTP upload
## PUT
Perhaps the best way to upload data to an HTTP server is to use PUT. Then
again, this of course requires that someone put a program or script on the
server end that knows how to receive an HTTP PUT stream.
Put a file to an HTTP server with curl:
curl --upload-file uploadfile http://www.example.com/receive.cgi
# HTTP Authentication
## Basic Authentication
HTTP Authentication is the ability to tell the server your username and
password so that it can verify that you are allowed to do the request you are
doing. The Basic authentication used in HTTP (which is the type curl uses by
default) is **plain text** based, which means it sends username and password
only slightly obfuscated, but still fully readable by anyone that sniffs on
the network between you and the remote server.
To tell curl to use a user and password for authentication:
curl --user name:password http://www.example.com
## Other Authentication
The site might require a different authentication method (check the headers
returned by the server), and then
[`--ntlm`](https://curl.se/docs/manpage.html#--ntlm),
[`--digest`](https://curl.se/docs/manpage.html#--digest),
[`--negotiate`](https://curl.se/docs/manpage.html#--negotiate) or even
[`--anyauth`](https://curl.se/docs/manpage.html#--anyauth) might be
options that suit you.
## Proxy Authentication
Sometimes your HTTP access is only available through the use of an HTTP
proxy. This seems to be especially common at various companies. An HTTP proxy
may require its own user and password to allow the client to get through to
the Internet. To specify those with curl, run something like:
curl --proxy-user proxyuser:proxypassword curl.se
If your proxy requires the authentication to be done using the NTLM method,
use [`--proxy-ntlm`](https://curl.se/docs/manpage.html#--proxy-ntlm), if
it requires Digest use
[`--proxy-digest`](https://curl.se/docs/manpage.html#--proxy-digest).
If you use any one of these user+password options but leave out the password
part, curl will prompt for the password interactively.
## Hiding credentials
Do note that when a program is run, its parameters might be possible to see
when listing the running processes of the system. Thus, other users may be
able to watch your passwords if you pass them as plain command line
options. There are ways to circumvent this.
It is worth noting that while this is how HTTP Authentication works, many
websites will not use this concept when they provide logins etc. See the Web
Login chapter further below for more details on that.
# More HTTP Headers
## Referer
An HTTP request may include a 'referer' field (yes it is misspelled), which
can be used to tell from which URL the client got to this particular
resource. Some programs/scripts check the referer field of requests to verify
that this was not arriving from an external site or an unknown page. While
this is a stupid way to check something so easily forged, many scripts still
do it. Using curl, you can put anything you want in the referer-field and
thus more easily be able to fool the server into serving your request.
Use curl to set the referer field with:
curl --referer http://www.example.come http://www.example.com
## User Agent
Similar to the referer field, all HTTP requests may set the User-Agent
field. It names what user agent (client) that is being used. Many
applications use this information to decide how to display pages. Silly web
programmers try to make different pages for users of different browsers to
make them look the best possible for their particular browsers. They usually
also do different kinds of JavaScript etc.
At times, you will see that getting a page with curl will not return the same
page that you see when getting the page with your browser. Then you know it
is time to set the User Agent field to fool the server into thinking you are
one of those browsers.
To make curl look like Internet Explorer 5 on a Windows 2000 box:
curl --user-agent "Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)" [URL]
Or why not look like you are using Netscape 4.73 on an old Linux box:
curl --user-agent "Mozilla/4.73 [en] (X11; U; Linux 2.2.15 i686)" [URL]
## Redirects
## Location header
When a resource is requested from a server, the reply from the server may
include a hint about where the browser should go next to find this page, or a
new page keeping newly generated output. The header that tells the browser to
redirect is `Location:`.
Curl does not follow `Location:` headers by default, but will simply display
such pages in the same manner it displays all HTTP replies. It does however
feature an option that will make it attempt to follow the `Location:`
pointers.
To tell curl to follow a Location:
curl --location http://www.example.com
If you use curl to POST to a site that immediately redirects you to another
page, you can safely use
[`--location`](https://curl.se/docs/manpage.html#-L) (`-L`) and
`--data`/`--form` together. Curl will only use POST in the first request, and
then revert to GET in the following operations.
## Other redirects
Browsers typically support at least two other ways of redirects that curl
does not: first the html may contain a meta refresh tag that asks the browser
to load a specific URL after a set number of seconds, or it may use
JavaScript to do it.
# Cookies
## Cookie Basics
The way the web browsers do "client side state control" is by using
cookies. Cookies are just names with associated contents. The cookies are
sent to the client by the server. The server tells the client for what path
and host name it wants the cookie sent back, and it also sends an expiration
date and a few more properties.
When a client communicates with a server with a name and path as previously
specified in a received cookie, the client sends back the cookies and their
contents to the server, unless of course they are expired.
Many applications and servers use this method to connect a series of requests
into a single logical session. To be able to use curl in such occasions, we
must be able to record and send back cookies the way the web application
expects them. The same way browsers deal with them.
## Cookie options
The simplest way to send a few cookies to the server when getting a page with
curl is to add them on the command line like:
curl --cookie "name=Daniel" http://www.example.com
Cookies are sent as common HTTP headers. This is practical as it allows curl
to record cookies simply by recording headers. Record cookies with curl by
using the [`--dump-header`](https://curl.se/docs/manpage.html#-D) (`-D`)
option like:
curl --dump-header headers_and_cookies http://www.example.com
(Take note that the
[`--cookie-jar`](https://curl.se/docs/manpage.html#-c) option described
below is a better way to store cookies.)
Curl has a full blown cookie parsing engine built-in that comes in use if you
want to reconnect to a server and use cookies that were stored from a
previous connection (or hand-crafted manually to fool the server into
believing you had a previous connection). To use previously stored cookies,
you run curl like:
curl --cookie stored_cookies_in_file http://www.example.com
Curl's "cookie engine" gets enabled when you use the
[`--cookie`](https://curl.se/docs/manpage.html#-b) option. If you only
want curl to understand received cookies, use `--cookie` with a file that
does not exist. Example, if you want to let curl understand cookies from a
page and follow a location (and thus possibly send back cookies it received),
you can invoke it like:
curl --cookie nada --location http://www.example.com
Curl has the ability to read and write cookie files that use the same file
format that Netscape and Mozilla once used. It is a convenient way to share
cookies between scripts or invokes. The `--cookie` (`-b`) switch
automatically detects if a given file is such a cookie file and parses it,
and by using the `--cookie-jar` (`-c`) option you will make curl write a new
cookie file at the end of an operation:
curl --cookie cookies.txt --cookie-jar newcookies.txt \
http://www.example.com
# HTTPS
## HTTPS is HTTP secure
There are a few ways to do secure HTTP transfers. By far the most common
protocol for doing this is what is generally known as HTTPS, HTTP over
SSL. SSL encrypts all the data that is sent and received over the network and
thus makes it harder for attackers to spy on sensitive information.
SSL (or TLS as the current version of the standard is called) offers a set of
advanced features to do secure transfers over HTTP.
Curl supports encrypted fetches when built to use a TLS library and it can be
built to use one out of a fairly large set of libraries - `curl -V` will show
which one your curl was built to use (if any!). To get a page from an HTTPS
server, simply run curl like:
curl https://secure.example.com
## Certificates
In the HTTPS world, you use certificates to validate that you are the one
you claim to be, as an addition to normal passwords. Curl supports client-
side certificates. All certificates are locked with a pass phrase, which you
need to enter before the certificate can be used by curl. The pass phrase
can be specified on the command line or if not, entered interactively when
curl queries for it. Use a certificate with curl on an HTTPS server like:
curl --cert mycert.pem https://secure.example.com
curl also tries to verify that the server is who it claims to be, by
verifying the server's certificate against a locally stored CA cert
bundle. Failing the verification will cause curl to deny the connection. You
must then use [`--insecure`](https://curl.se/docs/manpage.html#-k)
(`-k`) in case you want to tell curl to ignore that the server cannot be
verified.
More about server certificate verification and ca cert bundles can be read in
the [`SSLCERTS` document](https://curl.se/docs/sslcerts.html).
At times you may end up with your own CA cert store and then you can tell
curl to use that to verify the server's certificate:
curl --cacert ca-bundle.pem https://example.com/
# Custom Request Elements
## Modify method and headers
Doing fancy stuff, you may need to add or change elements of a single curl
request.
For example, you can change the POST method to `PROPFIND` and send the data
as `Content-Type: text/xml` (instead of the default `Content-Type`) like
this:
curl --data "<xml>" --header "Content-Type: text/xml" \
--request PROPFIND example.com
You can delete a default header by providing one without content. Like you
can ruin the request by chopping off the `Host:` header:
curl --header "Host:" http://www.example.com
You can add headers the same way. Your server may want a `Destination:`
header, and you can add it:
curl --header "Destination: http://nowhere" http://example.com
## More on changed methods
It should be noted that curl selects which methods to use on its own
depending on what action to ask for. `-d` will do POST, `-I` will do HEAD and
so on. If you use the
[`--request`](https://curl.se/docs/manpage.html#-X) / `-X` option you
can change the method keyword curl selects, but you will not modify curl's
behavior. This means that if you for example use -d "data" to do a POST, you
can modify the method to a `PROPFIND` with `-X` and curl will still think it
sends a POST . You can change the normal GET to a POST method by simply
adding `-X POST` in a command line like:
curl -X POST http://example.org/
... but curl will still think and act as if it sent a GET so it will not send
any request body etc.
# Web Login
## Some login tricks
While not strictly just HTTP related, it still causes a lot of people
problems so here's the executive run-down of how the vast majority of all
login forms work and how to login to them using curl.
It can also be noted that to do this properly in an automated fashion, you
will most certainly need to script things and do multiple curl invokes etc.
First, servers mostly use cookies to track the logged-in status of the
client, so you will need to capture the cookies you receive in the
responses. Then, many sites also set a special cookie on the login page (to
make sure you got there through their login page) so you should make a habit
of first getting the login-form page to capture the cookies set there.
Some web-based login systems feature various amounts of JavaScript, and
sometimes they use such code to set or modify cookie contents. Possibly they
do that to prevent programmed logins, like this manual describes how to...
Anyway, if reading the code is not enough to let you repeat the behavior
manually, capturing the HTTP requests done by your browsers and analyzing the
sent cookies is usually a working method to work out how to shortcut the
JavaScript need.
In the actual `<form>` tag for the login, lots of sites fill-in
random/session or otherwise secretly generated hidden tags and you may need
to first capture the HTML code for the login form and extract all the hidden
fields to be able to do a proper login POST. Remember that the contents need
to be URL encoded when sent in a normal POST.
# Debug
## Some debug tricks
Many times when you run curl on a site, you will notice that the site does not
seem to respond the same way to your curl requests as it does to your
browser's.
Then you need to start making your curl requests more similar to your
browser's requests:
- Use the `--trace-ascii` option to store fully detailed logs of the requests
for easier analyzing and better understanding
- Make sure you check for and use cookies when needed (both reading with
`--cookie` and writing with `--cookie-jar`)
- Set user-agent (with [`-A`](https://curl.se/docs/manpage.html#-A)) to
one like a recent popular browser does
- Set referer (with [`-E`](https://curl.se/docs/manpage.html#-E)) like
it is set by the browser
- If you use POST, make sure you send all the fields and in the same order as
the browser does it.
## Check what the browsers do
A good helper to make sure you do this right, is the web browsers' developers
tools that let you view all headers you send and receive (even when using
HTTPS).
A more raw approach is to capture the HTTP traffic on the network with tools
such as Wireshark or tcpdump and check what headers that were sent and
received by the browser. (HTTPS forces you to use `SSLKEYLOGFILE` to do
that.)

@ -1,391 +0,0 @@
# URL syntax and their use in curl
## Specifications
The official "URL syntax" is primarily defined in these two different
specifications:
- [RFC 3986](https://datatracker.ietf.org/doc/html/rfc3986) (although URL is called
"URI" in there)
- [The WHATWG URL Specification](https://url.spec.whatwg.org/)
RFC 3986 is the earlier one, and curl has always tried to adhere to that one
(since it shipped in January 2005).
The WHATWG URL spec was written later, is incompatible with the RFC 3986 and
changes over time.
## Variations
URL parsers as implemented in browsers, libraries and tools usually opt to
support one of the mentioned specifications. Bugs, differences in
interpretations and the moving nature of the WHATWG spec does however make it
unlikely that multiple parsers treat URLs the same way.
## Security
Due to the inherent differences between URL parser implementations, it is
considered a security risk to mix different implementations and assume the
same behavior!
For example, if you use one parser to check if a URL uses a good host name or
the correct auth field, and then pass on that same URL to a *second* parser,
there will always be a risk it treats the same URL differently. There is no
right and wrong in URL land, only differences of opinions.
libcurl offers a separate API to its URL parser for this reason, among others.
Applications may at times find it convenient to allow users to specify URLs
for various purposes and that string would then end up fed to curl. Getting a
URL from an external untrusted party and using it with curl brings several
security concerns:
1. If you have an application that runs as or in a server application, getting
an unfiltered URL can trick your application to access a local resource
instead of a remote resource. Protecting yourself against localhost accesses
is hard when accepting user provided URLs.
2. Such custom URLs can access other ports than you planned as port numbers
are part of the regular URL format. The combination of a local host and a
custom port number can allow external users to play tricks with your local
services.
3. Such a URL might use other schemes than you thought of or planned for.
## "RFC3986 plus"
curl recognizes a URL syntax that we call "RFC 3986 plus". It is grounded on
the well established RFC 3986 to make sure previously written command lines and
curl using scripts will remain working.
curl's URL parser allows a few deviations from the spec in order to
inter-operate better with URLs that appear in the wild.
### spaces
A URL provided to curl cannot contain spaces. They need to be provided URL
encoded to be accepted in a URL by curl.
An exception to this rule: `Location:` response headers that indicate to a
client where a resource has been redirected to, sometimes contain spaces. This
is a violation of RFC 3986 but is fine in the WHATWG spec. curl handles these
by re-encoding them to `%20`.
### non-ASCII
Byte values in a provided URL that are outside of the printable ASCII range
are percent-encoded by curl.
### multiple slashes
An absolute URL always starts with a "scheme" followed by a colon. For all the
schemes curl supports, the colon must be followed by two slashes according to
RFC 3986 but not according to the WHATWG spec - which allows one to infinity
amount.
curl allows one, two or three slashes after the colon to still be considered a
valid URL.
### "scheme-less"
curl supports "URLs" that do not start with a scheme. This is not supported by
any of the specifications. This is a shortcut to entering URLs that was
supported by browsers early on and has been mimicked by curl.
Based on what the host name starts with, curl will "guess" what protocol to
use:
- `ftp.` means FTP
- `dict.` means DICT
- `ldap.` means LDAP
- `imap.` means IMAP
- `smtp.` means SMTP
- `pop3.` means POP3
- all other means HTTP
### globbing letters
The curl command line tool supports "globbing" of URLs. It means that you can
create ranges and lists using `[N-M]` and `{one,two,three}` sequences. The
letters used for this (`[]{}`) are reserved in RFC 3986 and can therefore not
legitimately be part of such a URL.
They are however not reserved or special in the WHATWG specification, so
globbing can mess up such URLs. Globbing can be turned off for such occasions
(using `--globoff`).
# URL syntax details
A URL may consist of the following components - many of them are optional:
[scheme][divider][userinfo][hostname][port number][path][query][fragment]
Each component is separated from the following component with a divider
character or string.
For example, this could look like:
http://user:password@www.example.com:80/index.hmtl?foo=bar#top
## Scheme
The scheme specifies the protocol to use. A curl build can support a few or
many different schemes. You can limit what schemes curl should accept.
curl supports the following schemes on URLs specified to transfer. They are
matched case insensitively:
`dict`, `file`, `ftp`, `ftps`, `gopher`, `gophers`, `http`, `https`, `imap`,
`imaps`, `ldap`, `ldaps`, `mqtt`, `pop3`, `pop3s`, `rtmp`, `rtmpe`, `rtmps`,
`rtmpt`, `rtmpte`, `rtmpts`, `rtsp`, `smb`, `smbs`, `smtp`, `smtps`, `telnet`,
`tftp`
When the URL is specified to identify a proxy, curl recognizes the following
schemes:
`http`, `https`, `socks4`, `socks4a`, `socks5`, `socks5h`, `socks`
## Userinfo
The userinfo field can be used to set user name and password for
authentication purposes in this transfer. The use of this field is discouraged
since it often means passing around the password in plain text and is thus a
security risk.
URLs for IMAP, POP3 and SMTP also support *login options* as part of the
userinfo field. They are provided as a semicolon after the password and then
the options.
## Hostname
The hostname part of the URL contains the address of the server that you want
to connect to. This can be the fully qualified domain name of the server, the
local network name of the machine on your network or the IP address of the
server or machine represented by either an IPv4 or IPv6 address (within
brackets). For example:
http://www.example.com/
http://hostname/
http://192.168.0.1/
http://[2001:1890:1112:1::20]/
### "localhost"
Starting in curl 7.77.0, curl uses loopback IP addresses for the name
`localhost`: `127.0.0.1` and `::1`. It does not resolve the name using the
resolver functions.
This is done to make sure the host accessed is truly the localhost - the local
machine.
### IDNA
If curl was built with International Domain Name (IDN) support, it can also
handle host names using non-ASCII characters.
When built with libidn2, curl uses the IDNA 2008 standard. This is equivalent
to the WHATWG URL spec, but differs from certain browsers that use IDNA 2003
Transitional Processing. The two standards have a huge overlap but differ
slightly, perhaps most famously in how they deal with the German "double s"
(`ß`).
When winidn is used, curl uses IDNA 2003 Transitional Processing, like the rest
of Windows.
## Port number
If there's a colon after the hostname, that should be followed by the port
number to use. 1 - 65535. curl also supports a blank port number field - but
only if the URL starts with a scheme.
If the port number is not specified in the URL, curl will used a default port
based on the provide scheme:
DICT 2628, FTP 21, FTPS 990, GOPHER 70, GOPHERS 70, HTTP 80, HTTPS 443,
IMAP 132, IMAPS 993, LDAP 369, LDAPS 636, MQTT 1883, POP3 110, POP3S 995,
RTMP 1935, RTMPS 443, RTMPT 80, RTSP 554, SCP 22, SFTP 22, SMB 445, SMBS 445,
SMTP 25, SMTPS 465, TELNET 23, TFTP 69
# Scheme specific behaviors
## FTP
The path part of an FTP request specifies the file to retrieve and from which
directory. If the file part is omitted then libcurl downloads the directory
listing for the directory specified. If the directory is omitted then the
directory listing for the root / home directory will be returned.
FTP servers typically put the user in its "home directory" after login, which
then differs between users. To explicitly specify the root directory of an FTP
server, start the path with double slash `//` or `/%2f` (2F is the hexadecimal
value of the ascii code for the slash).
## FILE
When a `FILE://` URL is accessed on Windows systems, it can be crafted in a
way so that Windows attempts to connect to a (remote) machine when curl wants
to read or write such a path.
curl only allows the hostname part of a FILE URL to be one out of these three
alternatives: `localhost`, `127.0.0.1` or blank ("", zero characters).
Anything else will make curl fail to parse the URL.
### Windows-specific FILE details
curl accepts that the FILE URL's path starts with a "drive letter". That is a
single letter `a` to `z` followed by a colon or a pipe character (`|`).
The Windows operating system itself will convert some file accesses to perform
network accesses over SMB/CIFS, through several different file path patterns.
This way, a `file://` URL passed to curl *might* be converted into a network
access inadvertently and unknowingly to curl. This is a Windows feature curl
cannot control or disable.
## IMAP
The path part of an IMAP request not only specifies the mailbox to list or
select, but can also be used to check the `UIDVALIDITY` of the mailbox, to
specify the `UID`, `SECTION` and `PARTIAL` octets of the message to fetch and
to specify what messages to search for.
A top level folder list:
imap://user:password@mail.example.com
A folder list on the user's inbox:
imap://user:password@mail.example.com/INBOX
Select the user's inbox and fetch message with `uid = 1`:
imap://user:password@mail.example.com/INBOX/;UID=1
Select the user's inbox and fetch the first message in the mail box:
imap://user:password@mail.example.com/INBOX/;MAILINDEX=1
Select the user's inbox, check the `UIDVALIDITY` of the mailbox is 50 and
fetch message 2 if it is:
imap://user:password@mail.example.com/INBOX;UIDVALIDITY=50/;UID=2
Select the user's inbox and fetch the text portion of message 3:
imap://user:password@mail.example.com/INBOX/;UID=3/;SECTION=TEXT
Select the user's inbox and fetch the first 1024 octets of message 4:
imap://user:password@mail.example.com/INBOX/;UID=4/;PARTIAL=0.1024
Select the user's inbox and check for NEW messages:
imap://user:password@mail.example.com/INBOX?NEW
Select the user's inbox and search for messages containing "shadows" in the
subject line:
imap://user:password@mail.example.com/INBOX?SUBJECT%20shadows
Searching via the query part of the URL `?` is a search request for the
results to be returned as message sequence numbers (`MAILINDEX`). It is
possible to make a search request for results to be returned as unique ID
numbers (`UID`) by using a custom curl request via `-X`. `UID` numbers are
unique per session (and multiple sessions when `UIDVALIDITY` is the same). For
example, if you are searching for `"foo bar"` in header+body (`TEXT`) and you
want the matching `MAILINDEX` numbers returned then you could search via URL:
imap://user:password@mail.example.com/INBOX?TEXT%20%22foo%20bar%22
If you want matching `UID` numbers you have to use a custom request:
imap://user:password@mail.example.com/INBOX -X "UID SEARCH TEXT \"foo bar\""
For more information about IMAP commands please see RFC 9051. For more
information about the individual components of an IMAP URL please see RFC 5092.
* Note old curl versions would `FETCH` by message sequence number when `UID`
was specified in the URL. That was a bug fixed in 7.62.0, which added
`MAILINDEX` to `FETCH` by mail sequence number.
## LDAP
The path part of a LDAP request can be used to specify the: Distinguished
Name, Attributes, Scope, Filter and Extension for a LDAP search. Each field is
separated by a question mark and when that field is not required an empty
string with the question mark separator should be included.
Search for the `DN` as `My Organization`:
ldap://ldap.example.com/o=My%20Organization
the same search but will only return `postalAddress` attributes:
ldap://ldap.example.com/o=My%20Organization?postalAddress
Search for an empty `DN` and request information about the
`rootDomainNamingContext` attribute for an Active Directory server:
ldap://ldap.example.com/?rootDomainNamingContext
For more information about the individual components of a LDAP URL please
see [RFC 4516](https://datatracker.ietf.org/doc/html/rfc4516).
## POP3
The path part of a POP3 request specifies the message ID to retrieve. If the
ID is not specified then a list of waiting messages is returned instead.
## SCP
The path part of an SCP URL specifies the path and file to retrieve or
upload. The file is taken as an absolute path from the root directory on the
server.
To specify a path relative to the user's home directory on the server, prepend
`~/` to the path portion.
## SFTP
The path part of an SFTP URL specifies the file to retrieve or upload. If the
path ends with a slash (`/`) then a directory listing is returned instead of a
file. If the path is omitted entirely then the directory listing for the root
/ home directory will be returned.
## SMB
The path part of a SMB request specifies the file to retrieve and from what
share and directory or the share to upload to and as such, may not be omitted.
If the user name is embedded in the URL then it must contain the domain name
and as such, the backslash must be URL encoded as %2f.
When uploading to SMB, the size of the file needs to be known ahead of time,
meaning that you can upload a file passed to curl over a pipe like stdin.
curl supports SMB version 1 (only)
## SMTP
The path part of a SMTP request specifies the host name to present during
communication with the mail server. If the path is omitted, then libcurl will
attempt to resolve the local computer's host name. However, this may not
return the fully qualified domain name that is required by some mail servers
and specifying this path allows you to set an alternative name, such as your
machine's fully qualified domain name, which you might have obtained from an
external function such as gethostname or getaddrinfo.
The default smtp port is 25. Some servers use port 587 as an alternative.
## RTMP
There's no official URL spec for RTMP so libcurl uses the URL syntax supported
by the underlying librtmp library. It has a syntax where it wants a
traditional URL, followed by a space and a series of space-separated
`name=value` pairs.
While space is not typically a "legal" letter, libcurl accepts them. When a
user wants to pass in a `#` (hash) character it will be treated as a fragment
and get cut off by libcurl if provided literally. You will instead have to
escape it by providing it as backslash and its ASCII value in hexadecimal:
`\23`.

@ -1,57 +0,0 @@
Version Numbers and Releases
============================
Curl is not only curl. Curl is also libcurl. They are actually individually
versioned, but they usually follow each other closely.
The version numbering is always built up using the same system:
X.Y.Z
- X is main version number
- Y is release number
- Z is patch number
## Bumping numbers
One of these numbers will get bumped in each new release. The numbers to the
right of a bumped number will be reset to zero.
The main version number will get bumped when *really* big, world colliding
changes are made. The release number is bumped when changes are performed or
things/features are added. The patch number is bumped when the changes are
mere bugfixes.
It means that after release 1.2.3, we can release 2.0.0 if something really
big has been made, 1.3.0 if not that big changes were made or 1.2.4 if only
bugs were fixed.
Bumping, as in increasing the number with 1, is unconditionally only
affecting one of the numbers (except the ones to the right of it, that may be
set to zero). 1 becomes 2, 3 becomes 4, 9 becomes 10, 88 becomes 89 and 99
becomes 100. So, after 1.2.9 comes 1.2.10. After 3.99.3, 3.100.0 might come.
All original curl source release archives are named according to the libcurl
version (not according to the curl client version that, as said before, might
differ).
As a service to any application that might want to support new libcurl
features while still being able to build with older versions, all releases
have the libcurl version stored in the `curl/curlver.h` file using a static
numbering scheme that can be used for comparison. The version number is
defined as:
```c
#define LIBCURL_VERSION_NUM 0xXXYYZZ
```
Where `XX`, `YY` and `ZZ` are the main version, release and patch numbers in
hexadecimal. All three number fields are always represented using two digits
(eight bits each). 1.2 would appear as "0x010200" while version 9.11.7
appears as `0x090b07`.
This 6-digit hexadecimal number is always a greater number in a more recent
release. It makes comparisons with greater than and less than work.
This number is also available as three separate defines:
`LIBCURL_VERSION_MAJOR`, `LIBCURL_VERSION_MINOR` and `LIBCURL_VERSION_PATCH`.

@ -1,136 +0,0 @@
<!--
Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
SPDX-License-Identifier: curl
-->
# WebSocket in curl
## URL
WebSocket communication with libcurl is done by setting up a transfer to a URL
using the `ws://` or `wss://` URL schemes. The latter one being the secure
version done over HTTPS.
When using `wss://` to do WebSocket over HTTPS, the standard TLS and HTTPS
options will be acknowledged for the CA, verification of server certificate
etc.
WebSocket communication is done by upgrading a connection from either HTTP or
HTTPS. When given a WebSocket URL to work with, libcurl considers it a
transfer failure if the upgrade procedure fails. This means that a plain HTTP
200 response code is considered an error for this work.
## API
The WebSocket API is described in the individual man pages for the new API.
WebSocket with libcurl can be done two ways.
1. Get the WebSocket frames from the server sent to the write callback. You
can then respond with `curl_ws_send()` from within the callback (or outside
of it).
2. Set `CURLOPT_CONNECT_ONLY` to 2L (new for WebSocket), which makes libcurl
do an HTTP GET + `Upgrade:` request plus response in the
`curl_easy_perform()` call before it returns and then you can use
`curl_ws_recv()` and `curl_ws_send()` to receive and send WebSocket frames
from and to the server.
The new options to `curl_easy_setopt()`:
`CURLOPT_WS_OPTIONS` - to control specific behavior. `CURLWS_RAW_MODE` makes
libcurl provide all WebSocket traffic raw in the callback.
The new function calls:
`curl_ws_recv()` - receive a WebSocket frame
`curl_ws_send()` - send a WebSocket frame
`curl_ws_meta()` - return WebSocket metadata within a write callback
## Max frame size
The current implementation only supports frame sizes up to a max (64K right
now). This is because the API delivers full frames and it then cannot manage
the full 2^63 bytes size.
If we decide we need to support (much) larger frames than 64K, we need to
adjust the API accordingly to be able to deliver partial frames in both
directions.
## Errors
If the given WebSocket URL (using `ws://` or `wss://`) fails to get upgraded
via a 101 response code and instead gets another response code back from the
HTTP server - the transfer will return `CURLE_HTTP_RETURNED_ERROR` for that
transfer. Note then that even 2xx response codes are then considered error
since it failed to provide a WebSocket transfer.
## Test suite
I looked for an existing small WebSocket server implementation with maximum
flexibility to dissect and cram into the test suite but I ended up deciding
that extending the existing test suite server sws to deal with WebSocket
might be the better way.
- This server is already integrated and working in the test suite
- We want maximum control and ability to generate broken protocol and negative
tests as well. A dumber and simpler TCP server could then be easier to
massage into this than a "proper" WebSocket server.
## Command line tool WebSocket
The plan is to make curl do WebSocket similar to telnet/nc. That part of the
work has not been started.
Ideas:
- Read stdin and send off as messages. Consider newline as end of fragment.
(default to text? offer option to set binary)
- Respond to PINGs automatically
- Issue PINGs at some default interval (option to switch off/change interval?)
- Allow `-d` to specify (initial) data to send (should the format allow for
multiple separate frames?)
- Exit after N messages received, where N can be zero.
## Future work
- Verify the Sec-WebSocket-Accept response. It requires a sha-1 function.
- Verify Sec-WebSocket-Extensions and Sec-WebSocket-Protocol in the response
- Make WebSocket work with hyper
- Consider a `curl_ws_poll()`
- Make sure WebSocket code paths are fuzzed
- Add client-side PING interval
- Provide option to disable PING-PONG automation
- Support compression (`CURLWS_COMPRESS`)
## Why not libWebSocket
[libWebSocket](https://libWebSockets.org/) is said to be a solid, fast and
efficient WebSocket library with a vast amount of users. My plan was
originally to build upon it to skip having to implement the low level parts of
WebSocket myself.
Here are the reasons why I have decided to move forward with WebSocket in
curl **without using libWebSocket**:
- doxygen generated docs only makes them hard to navigate. No tutorial, no
clearly written explanatory pages for specific functions.
- seems (too) tightly integrated with a specific TLS library, while we want to
support WebSocket with whatever TLS library libcurl was already made to
work with.
- seems (too) tightly integrated with event libraries
- the references to threads and thread-pools in code and APIs indicate too
much logic for our purposes
- "bloated" - it is a *huge* library that is actually more lines of code than
libcurl itself
- WebSocket is a fairly simple protocol on the network/framing layer so
making a homegrown handling of it should be fine

@ -1,35 +0,0 @@
#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################
set(MANPAGE "${CURL_BINARY_DIR}/docs/curl.1")
# Load DPAGES and OTHERPAGES from shared file
transform_makefile_inc("Makefile.inc" "${CMAKE_CURRENT_BINARY_DIR}/Makefile.inc.cmake")
include("${CMAKE_CURRENT_BINARY_DIR}/Makefile.inc.cmake")
add_custom_command(OUTPUT "${MANPAGE}"
COMMAND "${PERL_EXECUTABLE}" "${CMAKE_CURRENT_SOURCE_DIR}/gen.pl" mainpage "${CMAKE_CURRENT_SOURCE_DIR}" > "${MANPAGE}"
DEPENDS ${DPAGES} ${OTHERPAGES}
VERBATIM
)
add_custom_target(generate-curl.1 DEPENDS "${MANPAGE}")

@ -1,73 +0,0 @@
<!--
Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
SPDX-License-Identifier: curl
-->
# curl man page generator
This is the curl man page generator. It generates a single nroff man page
output from the set of sources files in this directory.
There is one source file for each supported command line option. The output
gets `page-header` prepended and `page-footer` appended. The format is
described below.
## Option files
Each command line option is described in a file named `<long name>.d`, where
option name is written without any prefixing dashes. Like the file name for
the -v, --verbose option is named `verbose.d`.
Each file has a set of meta-data and a body of text.
### Meta-data
Added: (version number in which this was added)
Arg: (the argument the option takes)
c: (copyright line)
Example: (example command line, without "curl" and can use `$URL`)
Experimental: yes (if so)
Help: (short text for the --help output for this option)
Long: (long form name, without dashes)
Magic: (description of "magic" options)
Multi: single/append/boolean/mutex/custom (if used more than once)
Mutexed: (space separated list of options this overrides, no dashes)
Protocols: (space separated list for which protocols this option works)
Requires: (space separated list of features this requires, no dashes)
Scope: global (if the option is global)
See-also: (space separated list of related options, no dashes)
Short: (single letter, without dash)
SPDX-License-Identifier: curl
Tags: (space separated list)
--- (end of meta-data)
### Body
The body of the description. Only refer to options with their long form option
version, like `--verbose`. The output generator will replace such with the
correct markup that shows both short and long version.
Text written within `*asterisks*` will get shown using italics. Text within
two `**asterisks**` will get shown using bold.
Text that is prefixed with a space will be treated like an "example" and will
be output in monospace.
## Header and footer
`page-header` is the file that will be output before the generated options
output for the master man page.
`page-footer` is appended after all the individual options.
## Generate
`./gen.pl mainpage`
This command outputs a single huge nroff file, meant to become `curl.1`. The
full curl man page.
`./gen.pl listhelp`
Generates a full `curl --help` output for all known command line options.

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