You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
2211 lines
73 KiB
2211 lines
73 KiB
/*
|
|
* Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved.
|
|
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
|
|
*/
|
|
/*
|
|
* Copyright 1999-2005 The Apache Software Foundation.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
package com.sun.org.apache.xerces.internal.util;
|
|
|
|
import java.io.IOException;
|
|
import java.io.Serializable;
|
|
import java.util.Objects;
|
|
|
|
/**********************************************************************
|
|
* A class to represent a Uniform Resource Identifier (URI). This class
|
|
* is designed to handle the parsing of URIs and provide access to
|
|
* the various components (scheme, host, port, userinfo, path, query
|
|
* string and fragment) that may constitute a URI.
|
|
* <p>
|
|
* Parsing of a URI specification is done according to the URI
|
|
* syntax described in
|
|
* <a href="http://www.ietf.org/rfc/rfc2396.txt?number=2396">RFC 2396</a>,
|
|
* and amended by
|
|
* <a href="http://www.ietf.org/rfc/rfc2732.txt?number=2732">RFC 2732</a>.
|
|
* <p>
|
|
* Every absolute URI consists of a scheme, followed by a colon (':'),
|
|
* followed by a scheme-specific part. For URIs that follow the
|
|
* "generic URI" syntax, the scheme-specific part begins with two
|
|
* slashes ("//") and may be followed by an authority segment (comprised
|
|
* of user information, host, and port), path segment, query segment
|
|
* and fragment. Note that RFC 2396 no longer specifies the use of the
|
|
* parameters segment and excludes the "user:password" syntax as part of
|
|
* the authority segment. If "user:password" appears in a URI, the entire
|
|
* user/password string is stored as userinfo.
|
|
* <p>
|
|
* For URIs that do not follow the "generic URI" syntax (e.g. mailto),
|
|
* the entire scheme-specific part is treated as the "path" portion
|
|
* of the URI.
|
|
* <p>
|
|
* Note that, unlike the java.net.URL class, this class does not provide
|
|
* any built-in network access functionality nor does it provide any
|
|
* scheme-specific functionality (for example, it does not know a
|
|
* default port for a specific scheme). Rather, it only knows the
|
|
* grammar and basic set of operations that can be applied to a URI.
|
|
*
|
|
*
|
|
**********************************************************************/
|
|
public class URI implements Serializable {
|
|
|
|
/*******************************************************************
|
|
* MalformedURIExceptions are thrown in the process of building a URI
|
|
* or setting fields on a URI when an operation would result in an
|
|
* invalid URI specification.
|
|
*
|
|
********************************************************************/
|
|
public static class MalformedURIException extends IOException {
|
|
|
|
/** Serialization version. */
|
|
static final long serialVersionUID = -6695054834342951930L;
|
|
|
|
/******************************************************************
|
|
* Constructs a <code>MalformedURIException</code> with no specified
|
|
* detail message.
|
|
******************************************************************/
|
|
public MalformedURIException() {
|
|
super();
|
|
}
|
|
|
|
/*****************************************************************
|
|
* Constructs a <code>MalformedURIException</code> with the
|
|
* specified detail message.
|
|
*
|
|
* @param p_msg the detail message.
|
|
******************************************************************/
|
|
public MalformedURIException(String p_msg) {
|
|
super(p_msg);
|
|
}
|
|
}
|
|
|
|
/** Serialization version. */
|
|
static final long serialVersionUID = 1601921774685357214L;
|
|
|
|
private static final byte [] fgLookupTable = new byte[128];
|
|
|
|
/**
|
|
* Character Classes
|
|
*/
|
|
|
|
/** reserved characters ;/?:@&=+$,[] */
|
|
//RFC 2732 added '[' and ']' as reserved characters
|
|
private static final int RESERVED_CHARACTERS = 0x01;
|
|
|
|
/** URI punctuation mark characters: -_.!~*'() - these, combined with
|
|
alphanumerics, constitute the "unreserved" characters */
|
|
private static final int MARK_CHARACTERS = 0x02;
|
|
|
|
/** scheme can be composed of alphanumerics and these characters: +-. */
|
|
private static final int SCHEME_CHARACTERS = 0x04;
|
|
|
|
/** userinfo can be composed of unreserved, escaped and these
|
|
characters: ;:&=+$, */
|
|
private static final int USERINFO_CHARACTERS = 0x08;
|
|
|
|
/** ASCII letter characters */
|
|
private static final int ASCII_ALPHA_CHARACTERS = 0x10;
|
|
|
|
/** ASCII digit characters */
|
|
private static final int ASCII_DIGIT_CHARACTERS = 0x20;
|
|
|
|
/** ASCII hex characters */
|
|
private static final int ASCII_HEX_CHARACTERS = 0x40;
|
|
|
|
/** Path characters */
|
|
private static final int PATH_CHARACTERS = 0x80;
|
|
|
|
/** Mask for alpha-numeric characters */
|
|
private static final int MASK_ALPHA_NUMERIC = ASCII_ALPHA_CHARACTERS | ASCII_DIGIT_CHARACTERS;
|
|
|
|
/** Mask for unreserved characters */
|
|
private static final int MASK_UNRESERVED_MASK = MASK_ALPHA_NUMERIC | MARK_CHARACTERS;
|
|
|
|
/** Mask for URI allowable characters except for % */
|
|
private static final int MASK_URI_CHARACTER = MASK_UNRESERVED_MASK | RESERVED_CHARACTERS;
|
|
|
|
/** Mask for scheme characters */
|
|
private static final int MASK_SCHEME_CHARACTER = MASK_ALPHA_NUMERIC | SCHEME_CHARACTERS;
|
|
|
|
/** Mask for userinfo characters */
|
|
private static final int MASK_USERINFO_CHARACTER = MASK_UNRESERVED_MASK | USERINFO_CHARACTERS;
|
|
|
|
/** Mask for path characters */
|
|
private static final int MASK_PATH_CHARACTER = MASK_UNRESERVED_MASK | PATH_CHARACTERS;
|
|
|
|
static {
|
|
// Add ASCII Digits and ASCII Hex Numbers
|
|
for (int i = '0'; i <= '9'; ++i) {
|
|
fgLookupTable[i] |= ASCII_DIGIT_CHARACTERS | ASCII_HEX_CHARACTERS;
|
|
}
|
|
|
|
// Add ASCII Letters and ASCII Hex Numbers
|
|
for (int i = 'A'; i <= 'F'; ++i) {
|
|
fgLookupTable[i] |= ASCII_ALPHA_CHARACTERS | ASCII_HEX_CHARACTERS;
|
|
fgLookupTable[i+0x00000020] |= ASCII_ALPHA_CHARACTERS | ASCII_HEX_CHARACTERS;
|
|
}
|
|
|
|
// Add ASCII Letters
|
|
for (int i = 'G'; i <= 'Z'; ++i) {
|
|
fgLookupTable[i] |= ASCII_ALPHA_CHARACTERS;
|
|
fgLookupTable[i+0x00000020] |= ASCII_ALPHA_CHARACTERS;
|
|
}
|
|
|
|
// Add Reserved Characters
|
|
fgLookupTable[';'] |= RESERVED_CHARACTERS;
|
|
fgLookupTable['/'] |= RESERVED_CHARACTERS;
|
|
fgLookupTable['?'] |= RESERVED_CHARACTERS;
|
|
fgLookupTable[':'] |= RESERVED_CHARACTERS;
|
|
fgLookupTable['@'] |= RESERVED_CHARACTERS;
|
|
fgLookupTable['&'] |= RESERVED_CHARACTERS;
|
|
fgLookupTable['='] |= RESERVED_CHARACTERS;
|
|
fgLookupTable['+'] |= RESERVED_CHARACTERS;
|
|
fgLookupTable['$'] |= RESERVED_CHARACTERS;
|
|
fgLookupTable[','] |= RESERVED_CHARACTERS;
|
|
fgLookupTable['['] |= RESERVED_CHARACTERS;
|
|
fgLookupTable[']'] |= RESERVED_CHARACTERS;
|
|
|
|
// Add Mark Characters
|
|
fgLookupTable['-'] |= MARK_CHARACTERS;
|
|
fgLookupTable['_'] |= MARK_CHARACTERS;
|
|
fgLookupTable['.'] |= MARK_CHARACTERS;
|
|
fgLookupTable['!'] |= MARK_CHARACTERS;
|
|
fgLookupTable['~'] |= MARK_CHARACTERS;
|
|
fgLookupTable['*'] |= MARK_CHARACTERS;
|
|
fgLookupTable['\''] |= MARK_CHARACTERS;
|
|
fgLookupTable['('] |= MARK_CHARACTERS;
|
|
fgLookupTable[')'] |= MARK_CHARACTERS;
|
|
|
|
// Add Scheme Characters
|
|
fgLookupTable['+'] |= SCHEME_CHARACTERS;
|
|
fgLookupTable['-'] |= SCHEME_CHARACTERS;
|
|
fgLookupTable['.'] |= SCHEME_CHARACTERS;
|
|
|
|
// Add Userinfo Characters
|
|
fgLookupTable[';'] |= USERINFO_CHARACTERS;
|
|
fgLookupTable[':'] |= USERINFO_CHARACTERS;
|
|
fgLookupTable['&'] |= USERINFO_CHARACTERS;
|
|
fgLookupTable['='] |= USERINFO_CHARACTERS;
|
|
fgLookupTable['+'] |= USERINFO_CHARACTERS;
|
|
fgLookupTable['$'] |= USERINFO_CHARACTERS;
|
|
fgLookupTable[','] |= USERINFO_CHARACTERS;
|
|
|
|
// Add Path Characters
|
|
fgLookupTable[';'] |= PATH_CHARACTERS;
|
|
fgLookupTable['/'] |= PATH_CHARACTERS;
|
|
fgLookupTable[':'] |= PATH_CHARACTERS;
|
|
fgLookupTable['@'] |= PATH_CHARACTERS;
|
|
fgLookupTable['&'] |= PATH_CHARACTERS;
|
|
fgLookupTable['='] |= PATH_CHARACTERS;
|
|
fgLookupTable['+'] |= PATH_CHARACTERS;
|
|
fgLookupTable['$'] |= PATH_CHARACTERS;
|
|
fgLookupTable[','] |= PATH_CHARACTERS;
|
|
}
|
|
|
|
/** Stores the scheme (usually the protocol) for this URI. */
|
|
private String m_scheme = null;
|
|
|
|
/** If specified, stores the userinfo for this URI; otherwise null */
|
|
private String m_userinfo = null;
|
|
|
|
/** If specified, stores the host for this URI; otherwise null */
|
|
private String m_host = null;
|
|
|
|
/** If specified, stores the port for this URI; otherwise -1 */
|
|
private int m_port = -1;
|
|
|
|
/** If specified, stores the registry based authority for this URI; otherwise -1 */
|
|
private String m_regAuthority = null;
|
|
|
|
/** If specified, stores the path for this URI; otherwise null */
|
|
private String m_path = null;
|
|
|
|
/** If specified, stores the query string for this URI; otherwise
|
|
null. */
|
|
private String m_queryString = null;
|
|
|
|
/** If specified, stores the fragment for this URI; otherwise null */
|
|
private String m_fragment = null;
|
|
|
|
private static boolean DEBUG = false;
|
|
|
|
/**
|
|
* Construct a new and uninitialized URI.
|
|
*/
|
|
public URI() {
|
|
}
|
|
|
|
/**
|
|
* Construct a new URI from another URI. All fields for this URI are
|
|
* set equal to the fields of the URI passed in.
|
|
*
|
|
* @param p_other the URI to copy (cannot be null)
|
|
*/
|
|
public URI(URI p_other) {
|
|
initialize(p_other);
|
|
}
|
|
|
|
/**
|
|
* Construct a new URI from a URI specification string. If the
|
|
* specification follows the "generic URI" syntax, (two slashes
|
|
* following the first colon), the specification will be parsed
|
|
* accordingly - setting the scheme, userinfo, host,port, path, query
|
|
* string and fragment fields as necessary. If the specification does
|
|
* not follow the "generic URI" syntax, the specification is parsed
|
|
* into a scheme and scheme-specific part (stored as the path) only.
|
|
*
|
|
* @param p_uriSpec the URI specification string (cannot be null or
|
|
* empty)
|
|
*
|
|
* @exception MalformedURIException if p_uriSpec violates any syntax
|
|
* rules
|
|
*/
|
|
public URI(String p_uriSpec) throws MalformedURIException {
|
|
this((URI)null, p_uriSpec);
|
|
}
|
|
|
|
/**
|
|
* Construct a new URI from a URI specification string. If the
|
|
* specification follows the "generic URI" syntax, (two slashes
|
|
* following the first colon), the specification will be parsed
|
|
* accordingly - setting the scheme, userinfo, host,port, path, query
|
|
* string and fragment fields as necessary. If the specification does
|
|
* not follow the "generic URI" syntax, the specification is parsed
|
|
* into a scheme and scheme-specific part (stored as the path) only.
|
|
* Construct a relative URI if boolean is assigned to "true"
|
|
* and p_uriSpec is not valid absolute URI, instead of throwing an exception.
|
|
*
|
|
* @param p_uriSpec the URI specification string (cannot be null or
|
|
* empty)
|
|
* @param allowNonAbsoluteURI true to permit non-absolute URIs,
|
|
* false otherwise.
|
|
*
|
|
* @exception MalformedURIException if p_uriSpec violates any syntax
|
|
* rules
|
|
*/
|
|
public URI(String p_uriSpec, boolean allowNonAbsoluteURI) throws MalformedURIException {
|
|
this((URI)null, p_uriSpec, allowNonAbsoluteURI);
|
|
}
|
|
|
|
/**
|
|
* Construct a new URI from a base URI and a URI specification string.
|
|
* The URI specification string may be a relative URI.
|
|
*
|
|
* @param p_base the base URI (cannot be null if p_uriSpec is null or
|
|
* empty)
|
|
* @param p_uriSpec the URI specification string (cannot be null or
|
|
* empty if p_base is null)
|
|
*
|
|
* @exception MalformedURIException if p_uriSpec violates any syntax
|
|
* rules
|
|
*/
|
|
public URI(URI p_base, String p_uriSpec) throws MalformedURIException {
|
|
initialize(p_base, p_uriSpec);
|
|
}
|
|
|
|
/**
|
|
* Construct a new URI from a base URI and a URI specification string.
|
|
* The URI specification string may be a relative URI.
|
|
* Construct a relative URI if boolean is assigned to "true"
|
|
* and p_uriSpec is not valid absolute URI and p_base is null
|
|
* instead of throwing an exception.
|
|
*
|
|
* @param p_base the base URI (cannot be null if p_uriSpec is null or
|
|
* empty)
|
|
* @param p_uriSpec the URI specification string (cannot be null or
|
|
* empty if p_base is null)
|
|
* @param allowNonAbsoluteURI true to permit non-absolute URIs,
|
|
* false otherwise.
|
|
*
|
|
* @exception MalformedURIException if p_uriSpec violates any syntax
|
|
* rules
|
|
*/
|
|
public URI(URI p_base, String p_uriSpec, boolean allowNonAbsoluteURI) throws MalformedURIException {
|
|
initialize(p_base, p_uriSpec, allowNonAbsoluteURI);
|
|
}
|
|
|
|
/**
|
|
* Construct a new URI that does not follow the generic URI syntax.
|
|
* Only the scheme and scheme-specific part (stored as the path) are
|
|
* initialized.
|
|
*
|
|
* @param p_scheme the URI scheme (cannot be null or empty)
|
|
* @param p_schemeSpecificPart the scheme-specific part (cannot be
|
|
* null or empty)
|
|
*
|
|
* @exception MalformedURIException if p_scheme violates any
|
|
* syntax rules
|
|
*/
|
|
public URI(String p_scheme, String p_schemeSpecificPart)
|
|
throws MalformedURIException {
|
|
if (p_scheme == null || p_scheme.trim().length() == 0) {
|
|
throw new MalformedURIException(
|
|
"Cannot construct URI with null/empty scheme!");
|
|
}
|
|
if (p_schemeSpecificPart == null ||
|
|
p_schemeSpecificPart.trim().length() == 0) {
|
|
throw new MalformedURIException(
|
|
"Cannot construct URI with null/empty scheme-specific part!");
|
|
}
|
|
setScheme(p_scheme);
|
|
setPath(p_schemeSpecificPart);
|
|
}
|
|
|
|
/**
|
|
* Construct a new URI that follows the generic URI syntax from its
|
|
* component parts. Each component is validated for syntax and some
|
|
* basic semantic checks are performed as well. See the individual
|
|
* setter methods for specifics.
|
|
*
|
|
* @param p_scheme the URI scheme (cannot be null or empty)
|
|
* @param p_host the hostname, IPv4 address or IPv6 reference for the URI
|
|
* @param p_path the URI path - if the path contains '?' or '#',
|
|
* then the query string and/or fragment will be
|
|
* set from the path; however, if the query and
|
|
* fragment are specified both in the path and as
|
|
* separate parameters, an exception is thrown
|
|
* @param p_queryString the URI query string (cannot be specified
|
|
* if path is null)
|
|
* @param p_fragment the URI fragment (cannot be specified if path
|
|
* is null)
|
|
*
|
|
* @exception MalformedURIException if any of the parameters violates
|
|
* syntax rules or semantic rules
|
|
*/
|
|
public URI(String p_scheme, String p_host, String p_path,
|
|
String p_queryString, String p_fragment)
|
|
throws MalformedURIException {
|
|
this(p_scheme, null, p_host, -1, p_path, p_queryString, p_fragment);
|
|
}
|
|
|
|
/**
|
|
* Construct a new URI that follows the generic URI syntax from its
|
|
* component parts. Each component is validated for syntax and some
|
|
* basic semantic checks are performed as well. See the individual
|
|
* setter methods for specifics.
|
|
*
|
|
* @param p_scheme the URI scheme (cannot be null or empty)
|
|
* @param p_userinfo the URI userinfo (cannot be specified if host
|
|
* is null)
|
|
* @param p_host the hostname, IPv4 address or IPv6 reference for the URI
|
|
* @param p_port the URI port (may be -1 for "unspecified"; cannot
|
|
* be specified if host is null)
|
|
* @param p_path the URI path - if the path contains '?' or '#',
|
|
* then the query string and/or fragment will be
|
|
* set from the path; however, if the query and
|
|
* fragment are specified both in the path and as
|
|
* separate parameters, an exception is thrown
|
|
* @param p_queryString the URI query string (cannot be specified
|
|
* if path is null)
|
|
* @param p_fragment the URI fragment (cannot be specified if path
|
|
* is null)
|
|
*
|
|
* @exception MalformedURIException if any of the parameters violates
|
|
* syntax rules or semantic rules
|
|
*/
|
|
public URI(String p_scheme, String p_userinfo,
|
|
String p_host, int p_port, String p_path,
|
|
String p_queryString, String p_fragment)
|
|
throws MalformedURIException {
|
|
if (p_scheme == null || p_scheme.trim().length() == 0) {
|
|
throw new MalformedURIException("Scheme is required!");
|
|
}
|
|
|
|
if (p_host == null) {
|
|
if (p_userinfo != null) {
|
|
throw new MalformedURIException(
|
|
"Userinfo may not be specified if host is not specified!");
|
|
}
|
|
if (p_port != -1) {
|
|
throw new MalformedURIException(
|
|
"Port may not be specified if host is not specified!");
|
|
}
|
|
}
|
|
|
|
if (p_path != null) {
|
|
if (p_path.indexOf('?') != -1 && p_queryString != null) {
|
|
throw new MalformedURIException(
|
|
"Query string cannot be specified in path and query string!");
|
|
}
|
|
|
|
if (p_path.indexOf('#') != -1 && p_fragment != null) {
|
|
throw new MalformedURIException(
|
|
"Fragment cannot be specified in both the path and fragment!");
|
|
}
|
|
}
|
|
|
|
setScheme(p_scheme);
|
|
setHost(p_host);
|
|
setPort(p_port);
|
|
setUserinfo(p_userinfo);
|
|
setPath(p_path);
|
|
setQueryString(p_queryString);
|
|
setFragment(p_fragment);
|
|
}
|
|
|
|
/**
|
|
* Initialize all fields of this URI from another URI.
|
|
*
|
|
* @param p_other the URI to copy (cannot be null)
|
|
*/
|
|
private void initialize(URI p_other) {
|
|
m_scheme = p_other.getScheme();
|
|
m_userinfo = p_other.getUserinfo();
|
|
m_host = p_other.getHost();
|
|
m_port = p_other.getPort();
|
|
m_regAuthority = p_other.getRegBasedAuthority();
|
|
m_path = p_other.getPath();
|
|
m_queryString = p_other.getQueryString();
|
|
m_fragment = p_other.getFragment();
|
|
}
|
|
|
|
/**
|
|
* Initializes this URI from a base URI and a URI specification string.
|
|
* See RFC 2396 Section 4 and Appendix B for specifications on parsing
|
|
* the URI and Section 5 for specifications on resolving relative URIs
|
|
* and relative paths.
|
|
*
|
|
* @param p_base the base URI (may be null if p_uriSpec is an absolute
|
|
* URI)
|
|
* @param p_uriSpec the URI spec string which may be an absolute or
|
|
* relative URI (can only be null/empty if p_base
|
|
* is not null)
|
|
* @param allowNonAbsoluteURI true to permit non-absolute URIs,
|
|
* in case of relative URI, false otherwise.
|
|
*
|
|
* @exception MalformedURIException if p_base is null and p_uriSpec
|
|
* is not an absolute URI or if
|
|
* p_uriSpec violates syntax rules
|
|
*/
|
|
private void initialize(URI p_base, String p_uriSpec, boolean allowNonAbsoluteURI)
|
|
throws MalformedURIException {
|
|
|
|
String uriSpec = p_uriSpec;
|
|
int uriSpecLen = (uriSpec != null) ? uriSpec.length() : 0;
|
|
|
|
if (p_base == null && uriSpecLen == 0) {
|
|
if (allowNonAbsoluteURI) {
|
|
m_path = "";
|
|
return;
|
|
}
|
|
throw new MalformedURIException("Cannot initialize URI with empty parameters.");
|
|
}
|
|
|
|
// just make a copy of the base if spec is empty
|
|
if (uriSpecLen == 0) {
|
|
initialize(p_base);
|
|
return;
|
|
}
|
|
|
|
int index = 0;
|
|
|
|
// Check for scheme, which must be before '/', '?' or '#'.
|
|
int colonIdx = uriSpec.indexOf(':');
|
|
if (colonIdx != -1) {
|
|
final int searchFrom = colonIdx - 1;
|
|
// search backwards starting from character before ':'.
|
|
int slashIdx = uriSpec.lastIndexOf('/', searchFrom);
|
|
int queryIdx = uriSpec.lastIndexOf('?', searchFrom);
|
|
int fragmentIdx = uriSpec.lastIndexOf('#', searchFrom);
|
|
|
|
if (colonIdx == 0 || slashIdx != -1 ||
|
|
queryIdx != -1 || fragmentIdx != -1) {
|
|
// A standalone base is a valid URI according to spec
|
|
if (colonIdx == 0 || (p_base == null && fragmentIdx != 0 && !allowNonAbsoluteURI)) {
|
|
throw new MalformedURIException("No scheme found in URI.");
|
|
}
|
|
}
|
|
else {
|
|
initializeScheme(uriSpec);
|
|
index = m_scheme.length()+1;
|
|
|
|
// Neither 'scheme:' or 'scheme:#fragment' are valid URIs.
|
|
if (colonIdx == uriSpecLen - 1 || uriSpec.charAt(colonIdx+1) == '#') {
|
|
throw new MalformedURIException("Scheme specific part cannot be empty.");
|
|
}
|
|
}
|
|
}
|
|
else if (p_base == null && uriSpec.indexOf('#') != 0 && !allowNonAbsoluteURI) {
|
|
throw new MalformedURIException("No scheme found in URI.");
|
|
}
|
|
|
|
// Two slashes means we may have authority, but definitely means we're either
|
|
// matching net_path or abs_path. These two productions are ambiguous in that
|
|
// every net_path (except those containing an IPv6Reference) is an abs_path.
|
|
// RFC 2396 resolves this ambiguity by applying a greedy left most matching rule.
|
|
// Try matching net_path first, and if that fails we don't have authority so
|
|
// then attempt to match abs_path.
|
|
//
|
|
// net_path = "//" authority [ abs_path ]
|
|
// abs_path = "/" path_segments
|
|
if (((index+1) < uriSpecLen) &&
|
|
(uriSpec.charAt(index) == '/' && uriSpec.charAt(index+1) == '/')) {
|
|
index += 2;
|
|
int startPos = index;
|
|
|
|
// Authority will be everything up to path, query or fragment
|
|
char testChar = '\0';
|
|
while (index < uriSpecLen) {
|
|
testChar = uriSpec.charAt(index);
|
|
if (testChar == '/' || testChar == '?' || testChar == '#') {
|
|
break;
|
|
}
|
|
index++;
|
|
}
|
|
|
|
// Attempt to parse authority. If the section is an empty string
|
|
// this is a valid server based authority, so set the host to this
|
|
// value.
|
|
if (index > startPos) {
|
|
// If we didn't find authority we need to back up. Attempt to
|
|
// match against abs_path next.
|
|
if (!initializeAuthority(uriSpec.substring(startPos, index))) {
|
|
index = startPos - 2;
|
|
}
|
|
}
|
|
else {
|
|
m_host = "";
|
|
}
|
|
}
|
|
|
|
initializePath(uriSpec, index);
|
|
|
|
// Resolve relative URI to base URI - see RFC 2396 Section 5.2
|
|
// In some cases, it might make more sense to throw an exception
|
|
// (when scheme is specified is the string spec and the base URI
|
|
// is also specified, for example), but we're just following the
|
|
// RFC specifications
|
|
if (p_base != null) {
|
|
absolutize(p_base);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Initializes this URI from a base URI and a URI specification string.
|
|
* See RFC 2396 Section 4 and Appendix B for specifications on parsing
|
|
* the URI and Section 5 for specifications on resolving relative URIs
|
|
* and relative paths.
|
|
*
|
|
* @param p_base the base URI (may be null if p_uriSpec is an absolute
|
|
* URI)
|
|
* @param p_uriSpec the URI spec string which may be an absolute or
|
|
* relative URI (can only be null/empty if p_base
|
|
* is not null)
|
|
*
|
|
* @exception MalformedURIException if p_base is null and p_uriSpec
|
|
* is not an absolute URI or if
|
|
* p_uriSpec violates syntax rules
|
|
*/
|
|
private void initialize(URI p_base, String p_uriSpec)
|
|
throws MalformedURIException {
|
|
|
|
String uriSpec = p_uriSpec;
|
|
int uriSpecLen = (uriSpec != null) ? uriSpec.length() : 0;
|
|
|
|
if (p_base == null && uriSpecLen == 0) {
|
|
throw new MalformedURIException(
|
|
"Cannot initialize URI with empty parameters.");
|
|
}
|
|
|
|
// just make a copy of the base if spec is empty
|
|
if (uriSpecLen == 0) {
|
|
initialize(p_base);
|
|
return;
|
|
}
|
|
|
|
int index = 0;
|
|
|
|
// Check for scheme, which must be before '/', '?' or '#'.
|
|
int colonIdx = uriSpec.indexOf(':');
|
|
if (colonIdx != -1) {
|
|
final int searchFrom = colonIdx - 1;
|
|
// search backwards starting from character before ':'.
|
|
int slashIdx = uriSpec.lastIndexOf('/', searchFrom);
|
|
int queryIdx = uriSpec.lastIndexOf('?', searchFrom);
|
|
int fragmentIdx = uriSpec.lastIndexOf('#', searchFrom);
|
|
|
|
if (colonIdx == 0 || slashIdx != -1 ||
|
|
queryIdx != -1 || fragmentIdx != -1) {
|
|
// A standalone base is a valid URI according to spec
|
|
if (colonIdx == 0 || (p_base == null && fragmentIdx != 0)) {
|
|
throw new MalformedURIException("No scheme found in URI.");
|
|
}
|
|
}
|
|
else {
|
|
initializeScheme(uriSpec);
|
|
index = m_scheme.length()+1;
|
|
|
|
// Neither 'scheme:' or 'scheme:#fragment' are valid URIs.
|
|
if (colonIdx == uriSpecLen - 1 || uriSpec.charAt(colonIdx+1) == '#') {
|
|
throw new MalformedURIException("Scheme specific part cannot be empty.");
|
|
}
|
|
}
|
|
}
|
|
else if (p_base == null && uriSpec.indexOf('#') != 0) {
|
|
throw new MalformedURIException("No scheme found in URI.");
|
|
}
|
|
|
|
// Two slashes means we may have authority, but definitely means we're either
|
|
// matching net_path or abs_path. These two productions are ambiguous in that
|
|
// every net_path (except those containing an IPv6Reference) is an abs_path.
|
|
// RFC 2396 resolves this ambiguity by applying a greedy left most matching rule.
|
|
// Try matching net_path first, and if that fails we don't have authority so
|
|
// then attempt to match abs_path.
|
|
//
|
|
// net_path = "//" authority [ abs_path ]
|
|
// abs_path = "/" path_segments
|
|
if (((index+1) < uriSpecLen) &&
|
|
(uriSpec.charAt(index) == '/' && uriSpec.charAt(index+1) == '/')) {
|
|
index += 2;
|
|
int startPos = index;
|
|
|
|
// Authority will be everything up to path, query or fragment
|
|
char testChar = '\0';
|
|
while (index < uriSpecLen) {
|
|
testChar = uriSpec.charAt(index);
|
|
if (testChar == '/' || testChar == '?' || testChar == '#') {
|
|
break;
|
|
}
|
|
index++;
|
|
}
|
|
|
|
// Attempt to parse authority. If the section is an empty string
|
|
// this is a valid server based authority, so set the host to this
|
|
// value.
|
|
if (index > startPos) {
|
|
// If we didn't find authority we need to back up. Attempt to
|
|
// match against abs_path next.
|
|
if (!initializeAuthority(uriSpec.substring(startPos, index))) {
|
|
index = startPos - 2;
|
|
}
|
|
} else if (index < uriSpecLen) {
|
|
//Same as java.net.URI:
|
|
// DEVIATION: Allow empty authority prior to non-empty
|
|
// path, query component or fragment identifier
|
|
m_host = "";
|
|
} else {
|
|
throw new MalformedURIException("Expected authority.");
|
|
}
|
|
}
|
|
|
|
initializePath(uriSpec, index);
|
|
|
|
// Resolve relative URI to base URI - see RFC 2396 Section 5.2
|
|
// In some cases, it might make more sense to throw an exception
|
|
// (when scheme is specified is the string spec and the base URI
|
|
// is also specified, for example), but we're just following the
|
|
// RFC specifications
|
|
if (p_base != null) {
|
|
absolutize(p_base);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Absolutize URI with given base URI.
|
|
*
|
|
* @param p_base base URI for absolutization
|
|
*/
|
|
public void absolutize(URI p_base) {
|
|
|
|
// check to see if this is the current doc - RFC 2396 5.2 #2
|
|
// note that this is slightly different from the RFC spec in that
|
|
// we don't include the check for query string being null
|
|
// - this handles cases where the urispec is just a query
|
|
// string or a fragment (e.g. "?y" or "#s") -
|
|
// see <http://www.ics.uci.edu/~fielding/url/test1.html> which
|
|
// identified this as a bug in the RFC
|
|
if (m_path.length() == 0 && m_scheme == null &&
|
|
m_host == null && m_regAuthority == null) {
|
|
m_scheme = p_base.getScheme();
|
|
m_userinfo = p_base.getUserinfo();
|
|
m_host = p_base.getHost();
|
|
m_port = p_base.getPort();
|
|
m_regAuthority = p_base.getRegBasedAuthority();
|
|
m_path = p_base.getPath();
|
|
|
|
if (m_queryString == null) {
|
|
m_queryString = p_base.getQueryString();
|
|
|
|
if (m_fragment == null) {
|
|
m_fragment = p_base.getFragment();
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
// check for scheme - RFC 2396 5.2 #3
|
|
// if we found a scheme, it means absolute URI, so we're done
|
|
if (m_scheme == null) {
|
|
m_scheme = p_base.getScheme();
|
|
}
|
|
else {
|
|
return;
|
|
}
|
|
|
|
// check for authority - RFC 2396 5.2 #4
|
|
// if we found a host, then we've got a network path, so we're done
|
|
if (m_host == null && m_regAuthority == null) {
|
|
m_userinfo = p_base.getUserinfo();
|
|
m_host = p_base.getHost();
|
|
m_port = p_base.getPort();
|
|
m_regAuthority = p_base.getRegBasedAuthority();
|
|
}
|
|
else {
|
|
return;
|
|
}
|
|
|
|
// check for absolute path - RFC 2396 5.2 #5
|
|
if (m_path.length() > 0 &&
|
|
m_path.startsWith("/")) {
|
|
return;
|
|
}
|
|
|
|
// if we get to this point, we need to resolve relative path
|
|
// RFC 2396 5.2 #6
|
|
String path = "";
|
|
String basePath = p_base.getPath();
|
|
|
|
// 6a - get all but the last segment of the base URI path
|
|
if (basePath != null && basePath.length() > 0) {
|
|
int lastSlash = basePath.lastIndexOf('/');
|
|
if (lastSlash != -1) {
|
|
path = basePath.substring(0, lastSlash+1);
|
|
}
|
|
}
|
|
else if (m_path.length() > 0) {
|
|
path = "/";
|
|
}
|
|
|
|
// 6b - append the relative URI path
|
|
path = path.concat(m_path);
|
|
|
|
// 6c - remove all "./" where "." is a complete path segment
|
|
int index = -1;
|
|
while ((index = path.indexOf("/./")) != -1) {
|
|
path = path.substring(0, index+1).concat(path.substring(index+3));
|
|
}
|
|
|
|
// 6d - remove "." if path ends with "." as a complete path segment
|
|
if (path.endsWith("/.")) {
|
|
path = path.substring(0, path.length()-1);
|
|
}
|
|
|
|
// 6e - remove all "<segment>/../" where "<segment>" is a complete
|
|
// path segment not equal to ".."
|
|
index = 1;
|
|
int segIndex = -1;
|
|
String tempString = null;
|
|
|
|
while ((index = path.indexOf("/../", index)) > 0) {
|
|
tempString = path.substring(0, path.indexOf("/../"));
|
|
segIndex = tempString.lastIndexOf('/');
|
|
if (segIndex != -1) {
|
|
if (!tempString.substring(segIndex).equals("..")) {
|
|
path = path.substring(0, segIndex+1).concat(path.substring(index+4));
|
|
index = segIndex;
|
|
}
|
|
else {
|
|
index += 4;
|
|
}
|
|
}
|
|
else {
|
|
index += 4;
|
|
}
|
|
}
|
|
|
|
// 6f - remove ending "<segment>/.." where "<segment>" is a
|
|
// complete path segment
|
|
if (path.endsWith("/..")) {
|
|
tempString = path.substring(0, path.length()-3);
|
|
segIndex = tempString.lastIndexOf('/');
|
|
if (segIndex != -1) {
|
|
path = path.substring(0, segIndex+1);
|
|
}
|
|
}
|
|
m_path = path;
|
|
}
|
|
|
|
/**
|
|
* Initialize the scheme for this URI from a URI string spec.
|
|
*
|
|
* @param p_uriSpec the URI specification (cannot be null)
|
|
*
|
|
* @exception MalformedURIException if URI does not have a conformant
|
|
* scheme
|
|
*/
|
|
private void initializeScheme(String p_uriSpec)
|
|
throws MalformedURIException {
|
|
int uriSpecLen = p_uriSpec.length();
|
|
int index = 0;
|
|
String scheme = null;
|
|
char testChar = '\0';
|
|
|
|
while (index < uriSpecLen) {
|
|
testChar = p_uriSpec.charAt(index);
|
|
if (testChar == ':' || testChar == '/' ||
|
|
testChar == '?' || testChar == '#') {
|
|
break;
|
|
}
|
|
index++;
|
|
}
|
|
scheme = p_uriSpec.substring(0, index);
|
|
|
|
if (scheme.length() == 0) {
|
|
throw new MalformedURIException("No scheme found in URI.");
|
|
}
|
|
else {
|
|
setScheme(scheme);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Initialize the authority (either server or registry based)
|
|
* for this URI from a URI string spec.
|
|
*
|
|
* @param p_uriSpec the URI specification (cannot be null)
|
|
*
|
|
* @return true if the given string matched server or registry
|
|
* based authority
|
|
*/
|
|
private boolean initializeAuthority(String p_uriSpec) {
|
|
|
|
int index = 0;
|
|
int start = 0;
|
|
int end = p_uriSpec.length();
|
|
|
|
char testChar = '\0';
|
|
String userinfo = null;
|
|
|
|
// userinfo is everything up to @
|
|
if (p_uriSpec.indexOf('@', start) != -1) {
|
|
while (index < end) {
|
|
testChar = p_uriSpec.charAt(index);
|
|
if (testChar == '@') {
|
|
break;
|
|
}
|
|
index++;
|
|
}
|
|
userinfo = p_uriSpec.substring(start, index);
|
|
index++;
|
|
}
|
|
|
|
// host is everything up to last ':', or up to
|
|
// and including ']' if followed by ':'.
|
|
String host = null;
|
|
start = index;
|
|
boolean hasPort = false;
|
|
if (index < end) {
|
|
if (p_uriSpec.charAt(start) == '[') {
|
|
int bracketIndex = p_uriSpec.indexOf(']', start);
|
|
index = (bracketIndex != -1) ? bracketIndex : end;
|
|
if (index+1 < end && p_uriSpec.charAt(index+1) == ':') {
|
|
++index;
|
|
hasPort = true;
|
|
}
|
|
else {
|
|
index = end;
|
|
}
|
|
}
|
|
else {
|
|
int colonIndex = p_uriSpec.lastIndexOf(':', end);
|
|
index = (colonIndex > start) ? colonIndex : end;
|
|
hasPort = (index != end);
|
|
}
|
|
}
|
|
host = p_uriSpec.substring(start, index);
|
|
int port = -1;
|
|
if (host.length() > 0) {
|
|
// port
|
|
if (hasPort) {
|
|
index++;
|
|
start = index;
|
|
while (index < end) {
|
|
index++;
|
|
}
|
|
String portStr = p_uriSpec.substring(start, index);
|
|
if (portStr.length() > 0) {
|
|
// REVISIT: Remove this code.
|
|
/** for (int i = 0; i < portStr.length(); i++) {
|
|
if (!isDigit(portStr.charAt(i))) {
|
|
throw new MalformedURIException(
|
|
portStr +
|
|
" is invalid. Port should only contain digits!");
|
|
}
|
|
}**/
|
|
// REVISIT: Remove this code.
|
|
// Store port value as string instead of integer.
|
|
try {
|
|
port = Integer.parseInt(portStr);
|
|
if (port == -1) --port;
|
|
}
|
|
catch (NumberFormatException nfe) {
|
|
port = -2;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (isValidServerBasedAuthority(host, port, userinfo)) {
|
|
m_host = host;
|
|
m_port = port;
|
|
m_userinfo = userinfo;
|
|
return true;
|
|
}
|
|
// Note: Registry based authority is being removed from a
|
|
// new spec for URI which would obsolete RFC 2396. If the
|
|
// spec is added to XML errata, processing of reg_name
|
|
// needs to be removed. - mrglavas.
|
|
else if (isValidRegistryBasedAuthority(p_uriSpec)) {
|
|
m_regAuthority = p_uriSpec;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Determines whether the components host, port, and user info
|
|
* are valid as a server authority.
|
|
*
|
|
* @param host the host component of authority
|
|
* @param port the port number component of authority
|
|
* @param userinfo the user info component of authority
|
|
*
|
|
* @return true if the given host, port, and userinfo compose
|
|
* a valid server authority
|
|
*/
|
|
private boolean isValidServerBasedAuthority(String host, int port, String userinfo) {
|
|
|
|
// Check if the host is well formed.
|
|
if (!isWellFormedAddress(host)) {
|
|
return false;
|
|
}
|
|
|
|
// Check that port is well formed if it exists.
|
|
// REVISIT: There's no restriction on port value ranges, but
|
|
// perform the same check as in setPort to be consistent. Pass
|
|
// in a string to this method instead of an integer.
|
|
if (port < -1 || port > 65535) {
|
|
return false;
|
|
}
|
|
|
|
// Check that userinfo is well formed if it exists.
|
|
if (userinfo != null) {
|
|
// Userinfo can contain alphanumerics, mark characters, escaped
|
|
// and ';',':','&','=','+','$',','
|
|
int index = 0;
|
|
int end = userinfo.length();
|
|
char testChar = '\0';
|
|
while (index < end) {
|
|
testChar = userinfo.charAt(index);
|
|
if (testChar == '%') {
|
|
if (index+2 >= end ||
|
|
!isHex(userinfo.charAt(index+1)) ||
|
|
!isHex(userinfo.charAt(index+2))) {
|
|
return false;
|
|
}
|
|
index += 2;
|
|
}
|
|
else if (!isUserinfoCharacter(testChar)) {
|
|
return false;
|
|
}
|
|
++index;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Determines whether the given string is a registry based authority.
|
|
*
|
|
* @param authority the authority component of a URI
|
|
*
|
|
* @return true if the given string is a registry based authority
|
|
*/
|
|
private boolean isValidRegistryBasedAuthority(String authority) {
|
|
int index = 0;
|
|
int end = authority.length();
|
|
char testChar;
|
|
|
|
while (index < end) {
|
|
testChar = authority.charAt(index);
|
|
|
|
// check for valid escape sequence
|
|
if (testChar == '%') {
|
|
if (index+2 >= end ||
|
|
!isHex(authority.charAt(index+1)) ||
|
|
!isHex(authority.charAt(index+2))) {
|
|
return false;
|
|
}
|
|
index += 2;
|
|
}
|
|
// can check against path characters because the set
|
|
// is the same except for '/' which we've already excluded.
|
|
else if (!isPathCharacter(testChar)) {
|
|
return false;
|
|
}
|
|
++index;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Initialize the path for this URI from a URI string spec.
|
|
*
|
|
* @param p_uriSpec the URI specification (cannot be null)
|
|
* @param p_nStartIndex the index to begin scanning from
|
|
*
|
|
* @exception MalformedURIException if p_uriSpec violates syntax rules
|
|
*/
|
|
private void initializePath(String p_uriSpec, int p_nStartIndex)
|
|
throws MalformedURIException {
|
|
if (p_uriSpec == null) {
|
|
throw new MalformedURIException(
|
|
"Cannot initialize path from null string!");
|
|
}
|
|
|
|
int index = p_nStartIndex;
|
|
int start = p_nStartIndex;
|
|
int end = p_uriSpec.length();
|
|
char testChar = '\0';
|
|
|
|
// path - everything up to query string or fragment
|
|
if (start < end) {
|
|
// RFC 2732 only allows '[' and ']' to appear in the opaque part.
|
|
if (getScheme() == null || p_uriSpec.charAt(start) == '/') {
|
|
|
|
// Scan path.
|
|
// abs_path = "/" path_segments
|
|
// rel_path = rel_segment [ abs_path ]
|
|
while (index < end) {
|
|
testChar = p_uriSpec.charAt(index);
|
|
|
|
// check for valid escape sequence
|
|
if (testChar == '%') {
|
|
if (index+2 >= end ||
|
|
!isHex(p_uriSpec.charAt(index+1)) ||
|
|
!isHex(p_uriSpec.charAt(index+2))) {
|
|
throw new MalformedURIException(
|
|
"Path contains invalid escape sequence!");
|
|
}
|
|
index += 2;
|
|
}
|
|
// Path segments cannot contain '[' or ']' since pchar
|
|
// production was not changed by RFC 2732.
|
|
else if (!isPathCharacter(testChar)) {
|
|
if (testChar == '?' || testChar == '#') {
|
|
break;
|
|
}
|
|
throw new MalformedURIException(
|
|
"Path contains invalid character: " + testChar);
|
|
}
|
|
++index;
|
|
}
|
|
}
|
|
else {
|
|
|
|
// Scan opaque part.
|
|
// opaque_part = uric_no_slash *uric
|
|
while (index < end) {
|
|
testChar = p_uriSpec.charAt(index);
|
|
|
|
if (testChar == '?' || testChar == '#') {
|
|
break;
|
|
}
|
|
|
|
// check for valid escape sequence
|
|
if (testChar == '%') {
|
|
if (index+2 >= end ||
|
|
!isHex(p_uriSpec.charAt(index+1)) ||
|
|
!isHex(p_uriSpec.charAt(index+2))) {
|
|
throw new MalformedURIException(
|
|
"Opaque part contains invalid escape sequence!");
|
|
}
|
|
index += 2;
|
|
}
|
|
// If the scheme specific part is opaque, it can contain '['
|
|
// and ']'. uric_no_slash wasn't modified by RFC 2732, which
|
|
// I've interpreted as an error in the spec, since the
|
|
// production should be equivalent to (uric - '/'), and uric
|
|
// contains '[' and ']'. - mrglavas
|
|
else if (!isURICharacter(testChar)) {
|
|
throw new MalformedURIException(
|
|
"Opaque part contains invalid character: " + testChar);
|
|
}
|
|
++index;
|
|
}
|
|
}
|
|
}
|
|
m_path = p_uriSpec.substring(start, index);
|
|
|
|
// query - starts with ? and up to fragment or end
|
|
if (testChar == '?') {
|
|
index++;
|
|
start = index;
|
|
while (index < end) {
|
|
testChar = p_uriSpec.charAt(index);
|
|
if (testChar == '#') {
|
|
break;
|
|
}
|
|
if (testChar == '%') {
|
|
if (index+2 >= end ||
|
|
!isHex(p_uriSpec.charAt(index+1)) ||
|
|
!isHex(p_uriSpec.charAt(index+2))) {
|
|
throw new MalformedURIException(
|
|
"Query string contains invalid escape sequence!");
|
|
}
|
|
index += 2;
|
|
}
|
|
else if (!isURICharacter(testChar)) {
|
|
throw new MalformedURIException(
|
|
"Query string contains invalid character: " + testChar);
|
|
}
|
|
index++;
|
|
}
|
|
m_queryString = p_uriSpec.substring(start, index);
|
|
}
|
|
|
|
// fragment - starts with #
|
|
if (testChar == '#') {
|
|
index++;
|
|
start = index;
|
|
while (index < end) {
|
|
testChar = p_uriSpec.charAt(index);
|
|
|
|
if (testChar == '%') {
|
|
if (index+2 >= end ||
|
|
!isHex(p_uriSpec.charAt(index+1)) ||
|
|
!isHex(p_uriSpec.charAt(index+2))) {
|
|
throw new MalformedURIException(
|
|
"Fragment contains invalid escape sequence!");
|
|
}
|
|
index += 2;
|
|
}
|
|
else if (!isURICharacter(testChar)) {
|
|
throw new MalformedURIException(
|
|
"Fragment contains invalid character: "+testChar);
|
|
}
|
|
index++;
|
|
}
|
|
m_fragment = p_uriSpec.substring(start, index);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get the scheme for this URI.
|
|
*
|
|
* @return the scheme for this URI
|
|
*/
|
|
public String getScheme() {
|
|
return m_scheme;
|
|
}
|
|
|
|
/**
|
|
* Get the scheme-specific part for this URI (everything following the
|
|
* scheme and the first colon). See RFC 2396 Section 5.2 for spec.
|
|
*
|
|
* @return the scheme-specific part for this URI
|
|
*/
|
|
public String getSchemeSpecificPart() {
|
|
final StringBuilder schemespec = new StringBuilder();
|
|
|
|
if (m_host != null || m_regAuthority != null) {
|
|
schemespec.append("//");
|
|
|
|
// Server based authority.
|
|
if (m_host != null) {
|
|
|
|
if (m_userinfo != null) {
|
|
schemespec.append(m_userinfo);
|
|
schemespec.append('@');
|
|
}
|
|
|
|
schemespec.append(m_host);
|
|
|
|
if (m_port != -1) {
|
|
schemespec.append(':');
|
|
schemespec.append(m_port);
|
|
}
|
|
}
|
|
// Registry based authority.
|
|
else {
|
|
schemespec.append(m_regAuthority);
|
|
}
|
|
}
|
|
|
|
if (m_path != null) {
|
|
schemespec.append((m_path));
|
|
}
|
|
|
|
if (m_queryString != null) {
|
|
schemespec.append('?');
|
|
schemespec.append(m_queryString);
|
|
}
|
|
|
|
if (m_fragment != null) {
|
|
schemespec.append('#');
|
|
schemespec.append(m_fragment);
|
|
}
|
|
|
|
return schemespec.toString();
|
|
}
|
|
|
|
/**
|
|
* Get the userinfo for this URI.
|
|
*
|
|
* @return the userinfo for this URI (null if not specified).
|
|
*/
|
|
public String getUserinfo() {
|
|
return m_userinfo;
|
|
}
|
|
|
|
/**
|
|
* Get the host for this URI.
|
|
*
|
|
* @return the host for this URI (null if not specified).
|
|
*/
|
|
public String getHost() {
|
|
return m_host;
|
|
}
|
|
|
|
/**
|
|
* Get the port for this URI.
|
|
*
|
|
* @return the port for this URI (-1 if not specified).
|
|
*/
|
|
public int getPort() {
|
|
return m_port;
|
|
}
|
|
|
|
/**
|
|
* Get the registry based authority for this URI.
|
|
*
|
|
* @return the registry based authority (null if not specified).
|
|
*/
|
|
public String getRegBasedAuthority() {
|
|
return m_regAuthority;
|
|
}
|
|
|
|
/**
|
|
* Get the authority for this URI.
|
|
*
|
|
* @return the authority
|
|
*/
|
|
public String getAuthority() {
|
|
final StringBuilder authority = new StringBuilder();
|
|
if (m_host != null || m_regAuthority != null) {
|
|
authority.append("//");
|
|
|
|
// Server based authority.
|
|
if (m_host != null) {
|
|
|
|
if (m_userinfo != null) {
|
|
authority.append(m_userinfo);
|
|
authority.append('@');
|
|
}
|
|
|
|
authority.append(m_host);
|
|
|
|
if (m_port != -1) {
|
|
authority.append(':');
|
|
authority.append(m_port);
|
|
}
|
|
}
|
|
// Registry based authority.
|
|
else {
|
|
authority.append(m_regAuthority);
|
|
}
|
|
}
|
|
return authority.toString();
|
|
}
|
|
|
|
/**
|
|
* Get the path for this URI (optionally with the query string and
|
|
* fragment).
|
|
*
|
|
* @param p_includeQueryString if true (and query string is not null),
|
|
* then a "?" followed by the query string
|
|
* will be appended
|
|
* @param p_includeFragment if true (and fragment is not null),
|
|
* then a "#" followed by the fragment
|
|
* will be appended
|
|
*
|
|
* @return the path for this URI possibly including the query string
|
|
* and fragment
|
|
*/
|
|
public String getPath(boolean p_includeQueryString,
|
|
boolean p_includeFragment) {
|
|
final StringBuilder pathString = new StringBuilder(m_path);
|
|
|
|
if (p_includeQueryString && m_queryString != null) {
|
|
pathString.append('?');
|
|
pathString.append(m_queryString);
|
|
}
|
|
|
|
if (p_includeFragment && m_fragment != null) {
|
|
pathString.append('#');
|
|
pathString.append(m_fragment);
|
|
}
|
|
return pathString.toString();
|
|
}
|
|
|
|
/**
|
|
* Get the path for this URI. Note that the value returned is the path
|
|
* only and does not include the query string or fragment.
|
|
*
|
|
* @return the path for this URI.
|
|
*/
|
|
public String getPath() {
|
|
return m_path;
|
|
}
|
|
|
|
/**
|
|
* Get the query string for this URI.
|
|
*
|
|
* @return the query string for this URI. Null is returned if there
|
|
* was no "?" in the URI spec, empty string if there was a
|
|
* "?" but no query string following it.
|
|
*/
|
|
public String getQueryString() {
|
|
return m_queryString;
|
|
}
|
|
|
|
/**
|
|
* Get the fragment for this URI.
|
|
*
|
|
* @return the fragment for this URI. Null is returned if there
|
|
* was no "#" in the URI spec, empty string if there was a
|
|
* "#" but no fragment following it.
|
|
*/
|
|
public String getFragment() {
|
|
return m_fragment;
|
|
}
|
|
|
|
/**
|
|
* Set the scheme for this URI. The scheme is converted to lowercase
|
|
* before it is set.
|
|
*
|
|
* @param p_scheme the scheme for this URI (cannot be null)
|
|
*
|
|
* @exception MalformedURIException if p_scheme is not a conformant
|
|
* scheme name
|
|
*/
|
|
public void setScheme(String p_scheme) throws MalformedURIException {
|
|
if (p_scheme == null) {
|
|
throw new MalformedURIException(
|
|
"Cannot set scheme from null string!");
|
|
}
|
|
if (!isConformantSchemeName(p_scheme)) {
|
|
throw new MalformedURIException("The scheme is not conformant.");
|
|
}
|
|
|
|
m_scheme = p_scheme.toLowerCase();
|
|
}
|
|
|
|
/**
|
|
* Set the userinfo for this URI. If a non-null value is passed in and
|
|
* the host value is null, then an exception is thrown.
|
|
*
|
|
* @param p_userinfo the userinfo for this URI
|
|
*
|
|
* @exception MalformedURIException if p_userinfo contains invalid
|
|
* characters
|
|
*/
|
|
public void setUserinfo(String p_userinfo) throws MalformedURIException {
|
|
if (p_userinfo == null) {
|
|
m_userinfo = null;
|
|
return;
|
|
}
|
|
else {
|
|
if (m_host == null) {
|
|
throw new MalformedURIException(
|
|
"Userinfo cannot be set when host is null!");
|
|
}
|
|
|
|
// userinfo can contain alphanumerics, mark characters, escaped
|
|
// and ';',':','&','=','+','$',','
|
|
int index = 0;
|
|
int end = p_userinfo.length();
|
|
char testChar = '\0';
|
|
while (index < end) {
|
|
testChar = p_userinfo.charAt(index);
|
|
if (testChar == '%') {
|
|
if (index+2 >= end ||
|
|
!isHex(p_userinfo.charAt(index+1)) ||
|
|
!isHex(p_userinfo.charAt(index+2))) {
|
|
throw new MalformedURIException(
|
|
"Userinfo contains invalid escape sequence!");
|
|
}
|
|
}
|
|
else if (!isUserinfoCharacter(testChar)) {
|
|
throw new MalformedURIException(
|
|
"Userinfo contains invalid character:"+testChar);
|
|
}
|
|
index++;
|
|
}
|
|
}
|
|
m_userinfo = p_userinfo;
|
|
}
|
|
|
|
/**
|
|
* <p>Set the host for this URI. If null is passed in, the userinfo
|
|
* field is also set to null and the port is set to -1.</p>
|
|
*
|
|
* <p>Note: This method overwrites registry based authority if it
|
|
* previously existed in this URI.</p>
|
|
*
|
|
* @param p_host the host for this URI
|
|
*
|
|
* @exception MalformedURIException if p_host is not a valid IP
|
|
* address or DNS hostname.
|
|
*/
|
|
public void setHost(String p_host) throws MalformedURIException {
|
|
if (p_host == null || p_host.length() == 0) {
|
|
if (p_host != null) {
|
|
m_regAuthority = null;
|
|
}
|
|
m_host = p_host;
|
|
m_userinfo = null;
|
|
m_port = -1;
|
|
return;
|
|
}
|
|
else if (!isWellFormedAddress(p_host)) {
|
|
throw new MalformedURIException("Host is not a well formed address!");
|
|
}
|
|
m_host = p_host;
|
|
m_regAuthority = null;
|
|
}
|
|
|
|
/**
|
|
* Set the port for this URI. -1 is used to indicate that the port is
|
|
* not specified, otherwise valid port numbers are between 0 and 65535.
|
|
* If a valid port number is passed in and the host field is null,
|
|
* an exception is thrown.
|
|
*
|
|
* @param p_port the port number for this URI
|
|
*
|
|
* @exception MalformedURIException if p_port is not -1 and not a
|
|
* valid port number
|
|
*/
|
|
public void setPort(int p_port) throws MalformedURIException {
|
|
if (p_port >= 0 && p_port <= 65535) {
|
|
if (m_host == null) {
|
|
throw new MalformedURIException(
|
|
"Port cannot be set when host is null!");
|
|
}
|
|
}
|
|
else if (p_port != -1) {
|
|
throw new MalformedURIException("Invalid port number!");
|
|
}
|
|
m_port = p_port;
|
|
}
|
|
|
|
/**
|
|
* <p>Sets the registry based authority for this URI.</p>
|
|
*
|
|
* <p>Note: This method overwrites server based authority
|
|
* if it previously existed in this URI.</p>
|
|
*
|
|
* @param authority the registry based authority for this URI
|
|
*
|
|
* @exception MalformedURIException it authority is not a
|
|
* well formed registry based authority
|
|
*/
|
|
public void setRegBasedAuthority(String authority)
|
|
throws MalformedURIException {
|
|
|
|
if (authority == null) {
|
|
m_regAuthority = null;
|
|
return;
|
|
}
|
|
// reg_name = 1*( unreserved | escaped | "$" | "," |
|
|
// ";" | ":" | "@" | "&" | "=" | "+" )
|
|
else if (authority.length() < 1 ||
|
|
!isValidRegistryBasedAuthority(authority) ||
|
|
authority.indexOf('/') != -1) {
|
|
throw new MalformedURIException("Registry based authority is not well formed.");
|
|
}
|
|
m_regAuthority = authority;
|
|
m_host = null;
|
|
m_userinfo = null;
|
|
m_port = -1;
|
|
}
|
|
|
|
/**
|
|
* Set the path for this URI. If the supplied path is null, then the
|
|
* query string and fragment are set to null as well. If the supplied
|
|
* path includes a query string and/or fragment, these fields will be
|
|
* parsed and set as well. Note that, for URIs following the "generic
|
|
* URI" syntax, the path specified should start with a slash.
|
|
* For URIs that do not follow the generic URI syntax, this method
|
|
* sets the scheme-specific part.
|
|
*
|
|
* @param p_path the path for this URI (may be null)
|
|
*
|
|
* @exception MalformedURIException if p_path contains invalid
|
|
* characters
|
|
*/
|
|
public void setPath(String p_path) throws MalformedURIException {
|
|
if (p_path == null) {
|
|
m_path = null;
|
|
m_queryString = null;
|
|
m_fragment = null;
|
|
}
|
|
else {
|
|
initializePath(p_path, 0);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Append to the end of the path of this URI. If the current path does
|
|
* not end in a slash and the path to be appended does not begin with
|
|
* a slash, a slash will be appended to the current path before the
|
|
* new segment is added. Also, if the current path ends in a slash
|
|
* and the new segment begins with a slash, the extra slash will be
|
|
* removed before the new segment is appended.
|
|
*
|
|
* @param p_addToPath the new segment to be added to the current path
|
|
*
|
|
* @exception MalformedURIException if p_addToPath contains syntax
|
|
* errors
|
|
*/
|
|
public void appendPath(String p_addToPath)
|
|
throws MalformedURIException {
|
|
if (p_addToPath == null || p_addToPath.trim().length() == 0) {
|
|
return;
|
|
}
|
|
|
|
if (!isURIString(p_addToPath)) {
|
|
throw new MalformedURIException(
|
|
"Path contains invalid character!");
|
|
}
|
|
|
|
if (m_path == null || m_path.trim().length() == 0) {
|
|
if (p_addToPath.startsWith("/")) {
|
|
m_path = p_addToPath;
|
|
}
|
|
else {
|
|
m_path = "/" + p_addToPath;
|
|
}
|
|
}
|
|
else if (m_path.endsWith("/")) {
|
|
if (p_addToPath.startsWith("/")) {
|
|
m_path = m_path.concat(p_addToPath.substring(1));
|
|
}
|
|
else {
|
|
m_path = m_path.concat(p_addToPath);
|
|
}
|
|
}
|
|
else {
|
|
if (p_addToPath.startsWith("/")) {
|
|
m_path = m_path.concat(p_addToPath);
|
|
}
|
|
else {
|
|
m_path = m_path.concat("/" + p_addToPath);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Set the query string for this URI. A non-null value is valid only
|
|
* if this is an URI conforming to the generic URI syntax and
|
|
* the path value is not null.
|
|
*
|
|
* @param p_queryString the query string for this URI
|
|
*
|
|
* @exception MalformedURIException if p_queryString is not null and this
|
|
* URI does not conform to the generic
|
|
* URI syntax or if the path is null
|
|
*/
|
|
public void setQueryString(String p_queryString) throws MalformedURIException {
|
|
if (p_queryString == null) {
|
|
m_queryString = null;
|
|
}
|
|
else if (!isGenericURI()) {
|
|
throw new MalformedURIException(
|
|
"Query string can only be set for a generic URI!");
|
|
}
|
|
else if (getPath() == null) {
|
|
throw new MalformedURIException(
|
|
"Query string cannot be set when path is null!");
|
|
}
|
|
else if (!isURIString(p_queryString)) {
|
|
throw new MalformedURIException(
|
|
"Query string contains invalid character!");
|
|
}
|
|
else {
|
|
m_queryString = p_queryString;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Set the fragment for this URI. A non-null value is valid only
|
|
* if this is a URI conforming to the generic URI syntax and
|
|
* the path value is not null.
|
|
*
|
|
* @param p_fragment the fragment for this URI
|
|
*
|
|
* @exception MalformedURIException if p_fragment is not null and this
|
|
* URI does not conform to the generic
|
|
* URI syntax or if the path is null
|
|
*/
|
|
public void setFragment(String p_fragment) throws MalformedURIException {
|
|
if (p_fragment == null) {
|
|
m_fragment = null;
|
|
}
|
|
else if (!isGenericURI()) {
|
|
throw new MalformedURIException(
|
|
"Fragment can only be set for a generic URI!");
|
|
}
|
|
else if (getPath() == null) {
|
|
throw new MalformedURIException(
|
|
"Fragment cannot be set when path is null!");
|
|
}
|
|
else if (!isURIString(p_fragment)) {
|
|
throw new MalformedURIException(
|
|
"Fragment contains invalid character!");
|
|
}
|
|
else {
|
|
m_fragment = p_fragment;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Determines if the passed-in Object is equivalent to this URI.
|
|
*
|
|
* @param p_test the Object to test for equality.
|
|
*
|
|
* @return true if p_test is a URI with all values equal to this
|
|
* URI, false otherwise
|
|
*/
|
|
@Override
|
|
public boolean equals(Object p_test) {
|
|
if (p_test instanceof URI) {
|
|
URI testURI = (URI) p_test;
|
|
if (((m_scheme == null && testURI.m_scheme == null) ||
|
|
(m_scheme != null && testURI.m_scheme != null &&
|
|
m_scheme.equals(testURI.m_scheme))) &&
|
|
((m_userinfo == null && testURI.m_userinfo == null) ||
|
|
(m_userinfo != null && testURI.m_userinfo != null &&
|
|
m_userinfo.equals(testURI.m_userinfo))) &&
|
|
((m_host == null && testURI.m_host == null) ||
|
|
(m_host != null && testURI.m_host != null &&
|
|
m_host.equals(testURI.m_host))) &&
|
|
m_port == testURI.m_port &&
|
|
((m_path == null && testURI.m_path == null) ||
|
|
(m_path != null && testURI.m_path != null &&
|
|
m_path.equals(testURI.m_path))) &&
|
|
((m_queryString == null && testURI.m_queryString == null) ||
|
|
(m_queryString != null && testURI.m_queryString != null &&
|
|
m_queryString.equals(testURI.m_queryString))) &&
|
|
((m_fragment == null && testURI.m_fragment == null) ||
|
|
(m_fragment != null && testURI.m_fragment != null &&
|
|
m_fragment.equals(testURI.m_fragment)))) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
@Override
|
|
public int hashCode() {
|
|
int hash = 5;
|
|
hash = 47 * hash + Objects.hashCode(this.m_scheme);
|
|
hash = 47 * hash + Objects.hashCode(this.m_userinfo);
|
|
hash = 47 * hash + Objects.hashCode(this.m_host);
|
|
hash = 47 * hash + this.m_port;
|
|
hash = 47 * hash + Objects.hashCode(this.m_path);
|
|
hash = 47 * hash + Objects.hashCode(this.m_queryString);
|
|
hash = 47 * hash + Objects.hashCode(this.m_fragment);
|
|
return hash;
|
|
}
|
|
|
|
/**
|
|
* Get the URI as a string specification. See RFC 2396 Section 5.2.
|
|
*
|
|
* @return the URI string specification
|
|
*/
|
|
@Override
|
|
public String toString() {
|
|
final StringBuilder uriSpecString = new StringBuilder();
|
|
|
|
if (m_scheme != null) {
|
|
uriSpecString.append(m_scheme);
|
|
uriSpecString.append(':');
|
|
}
|
|
uriSpecString.append(getSchemeSpecificPart());
|
|
return uriSpecString.toString();
|
|
}
|
|
|
|
/**
|
|
* Get the indicator as to whether this URI uses the "generic URI"
|
|
* syntax.
|
|
*
|
|
* @return true if this URI uses the "generic URI" syntax, false
|
|
* otherwise
|
|
*/
|
|
public boolean isGenericURI() {
|
|
// presence of the host (whether valid or empty) means
|
|
// double-slashes which means generic uri
|
|
return (m_host != null);
|
|
}
|
|
|
|
/**
|
|
* Returns whether this URI represents an absolute URI.
|
|
*
|
|
* @return true if this URI represents an absolute URI, false
|
|
* otherwise
|
|
*/
|
|
public boolean isAbsoluteURI() {
|
|
// presence of the scheme means absolute uri
|
|
return (m_scheme != null);
|
|
}
|
|
|
|
/**
|
|
* Determine whether a scheme conforms to the rules for a scheme name.
|
|
* A scheme is conformant if it starts with an alphanumeric, and
|
|
* contains only alphanumerics, '+','-' and '.'.
|
|
*
|
|
* @return true if the scheme is conformant, false otherwise
|
|
*/
|
|
public static boolean isConformantSchemeName(String p_scheme) {
|
|
if (p_scheme == null || p_scheme.trim().length() == 0) {
|
|
return false;
|
|
}
|
|
|
|
if (!isAlpha(p_scheme.charAt(0))) {
|
|
return false;
|
|
}
|
|
|
|
char testChar;
|
|
int schemeLength = p_scheme.length();
|
|
for (int i = 1; i < schemeLength; ++i) {
|
|
testChar = p_scheme.charAt(i);
|
|
if (!isSchemeCharacter(testChar)) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Determine whether a string is syntactically capable of representing
|
|
* a valid IPv4 address, IPv6 reference or the domain name of a network host.
|
|
* A valid IPv4 address consists of four decimal digit groups separated by a
|
|
* '.'. Each group must consist of one to three digits. See RFC 2732 Section 3,
|
|
* and RFC 2373 Section 2.2, for the definition of IPv6 references. A hostname
|
|
* consists of domain labels (each of which must begin and end with an alphanumeric
|
|
* but may contain '-') separated & by a '.'. See RFC 2396 Section 3.2.2.
|
|
*
|
|
* @return true if the string is a syntactically valid IPv4 address,
|
|
* IPv6 reference or hostname
|
|
*/
|
|
public static boolean isWellFormedAddress(String address) {
|
|
if (address == null) {
|
|
return false;
|
|
}
|
|
|
|
int addrLength = address.length();
|
|
if (addrLength == 0) {
|
|
return false;
|
|
}
|
|
|
|
// Check if the host is a valid IPv6reference.
|
|
if (address.startsWith("[")) {
|
|
return isWellFormedIPv6Reference(address);
|
|
}
|
|
|
|
// Cannot start with a '.', '-', or end with a '-'.
|
|
if (address.startsWith(".") ||
|
|
address.startsWith("-") ||
|
|
address.endsWith("-")) {
|
|
return false;
|
|
}
|
|
|
|
// rightmost domain label starting with digit indicates IP address
|
|
// since top level domain label can only start with an alpha
|
|
// see RFC 2396 Section 3.2.2
|
|
int index = address.lastIndexOf('.');
|
|
if (address.endsWith(".")) {
|
|
index = address.substring(0, index).lastIndexOf('.');
|
|
}
|
|
|
|
if (index+1 < addrLength && isDigit(address.charAt(index+1))) {
|
|
return isWellFormedIPv4Address(address);
|
|
}
|
|
else {
|
|
// hostname = *( domainlabel "." ) toplabel [ "." ]
|
|
// domainlabel = alphanum | alphanum *( alphanum | "-" ) alphanum
|
|
// toplabel = alpha | alpha *( alphanum | "-" ) alphanum
|
|
|
|
// RFC 2396 states that hostnames take the form described in
|
|
// RFC 1034 (Section 3) and RFC 1123 (Section 2.1). According
|
|
// to RFC 1034, hostnames are limited to 255 characters.
|
|
if (addrLength > 255) {
|
|
return false;
|
|
}
|
|
|
|
// domain labels can contain alphanumerics and '-"
|
|
// but must start and end with an alphanumeric
|
|
char testChar;
|
|
int labelCharCount = 0;
|
|
|
|
for (int i = 0; i < addrLength; i++) {
|
|
testChar = address.charAt(i);
|
|
if (testChar == '.') {
|
|
if (!isAlphanum(address.charAt(i-1))) {
|
|
return false;
|
|
}
|
|
if (i+1 < addrLength && !isAlphanum(address.charAt(i+1))) {
|
|
return false;
|
|
}
|
|
labelCharCount = 0;
|
|
}
|
|
else if (!isAlphanum(testChar) && testChar != '-') {
|
|
return false;
|
|
}
|
|
// RFC 1034: Labels must be 63 characters or less.
|
|
else if (++labelCharCount > 63) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* <p>Determines whether a string is an IPv4 address as defined by
|
|
* RFC 2373, and under the further constraint that it must be a 32-bit
|
|
* address. Though not expressed in the grammar, in order to satisfy
|
|
* the 32-bit address constraint, each segment of the address cannot
|
|
* be greater than 255 (8 bits of information).</p>
|
|
*
|
|
* <p><code>IPv4address = 1*3DIGIT "." 1*3DIGIT "." 1*3DIGIT "." 1*3DIGIT</code></p>
|
|
*
|
|
* @return true if the string is a syntactically valid IPv4 address
|
|
*/
|
|
public static boolean isWellFormedIPv4Address(String address) {
|
|
|
|
int addrLength = address.length();
|
|
char testChar;
|
|
int numDots = 0;
|
|
int numDigits = 0;
|
|
|
|
// make sure that 1) we see only digits and dot separators, 2) that
|
|
// any dot separator is preceded and followed by a digit and
|
|
// 3) that we find 3 dots
|
|
//
|
|
// RFC 2732 amended RFC 2396 by replacing the definition
|
|
// of IPv4address with the one defined by RFC 2373. - mrglavas
|
|
//
|
|
// IPv4address = 1*3DIGIT "." 1*3DIGIT "." 1*3DIGIT "." 1*3DIGIT
|
|
//
|
|
// One to three digits must be in each segment.
|
|
for (int i = 0; i < addrLength; i++) {
|
|
testChar = address.charAt(i);
|
|
if (testChar == '.') {
|
|
if ((i > 0 && !isDigit(address.charAt(i-1))) ||
|
|
(i+1 < addrLength && !isDigit(address.charAt(i+1)))) {
|
|
return false;
|
|
}
|
|
numDigits = 0;
|
|
if (++numDots > 3) {
|
|
return false;
|
|
}
|
|
}
|
|
else if (!isDigit(testChar)) {
|
|
return false;
|
|
}
|
|
// Check that that there are no more than three digits
|
|
// in this segment.
|
|
else if (++numDigits > 3) {
|
|
return false;
|
|
}
|
|
// Check that this segment is not greater than 255.
|
|
else if (numDigits == 3) {
|
|
char first = address.charAt(i-2);
|
|
char second = address.charAt(i-1);
|
|
if (!(first < '2' ||
|
|
(first == '2' &&
|
|
(second < '5' ||
|
|
(second == '5' && testChar <= '5'))))) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
return (numDots == 3);
|
|
}
|
|
|
|
/**
|
|
* <p>Determines whether a string is an IPv6 reference as defined
|
|
* by RFC 2732, where IPv6address is defined in RFC 2373. The
|
|
* IPv6 address is parsed according to Section 2.2 of RFC 2373,
|
|
* with the additional constraint that the address be composed of
|
|
* 128 bits of information.</p>
|
|
*
|
|
* <p><code>IPv6reference = "[" IPv6address "]"</code></p>
|
|
*
|
|
* <p>Note: The BNF expressed in RFC 2373 Appendix B does not
|
|
* accurately describe section 2.2, and was in fact removed from
|
|
* RFC 3513, the successor of RFC 2373.</p>
|
|
*
|
|
* @return true if the string is a syntactically valid IPv6 reference
|
|
*/
|
|
public static boolean isWellFormedIPv6Reference(String address) {
|
|
|
|
int addrLength = address.length();
|
|
int index = 1;
|
|
int end = addrLength-1;
|
|
|
|
// Check if string is a potential match for IPv6reference.
|
|
if (!(addrLength > 2 && address.charAt(0) == '['
|
|
&& address.charAt(end) == ']')) {
|
|
return false;
|
|
}
|
|
|
|
// Counter for the number of 16-bit sections read in the address.
|
|
int [] counter = new int[1];
|
|
|
|
// Scan hex sequence before possible '::' or IPv4 address.
|
|
index = scanHexSequence(address, index, end, counter);
|
|
if (index == -1) {
|
|
return false;
|
|
}
|
|
// Address must contain 128-bits of information.
|
|
else if (index == end) {
|
|
return (counter[0] == 8);
|
|
}
|
|
|
|
if (index+1 < end && address.charAt(index) == ':') {
|
|
if (address.charAt(index+1) == ':') {
|
|
// '::' represents at least one 16-bit group of zeros.
|
|
if (++counter[0] > 8) {
|
|
return false;
|
|
}
|
|
index += 2;
|
|
// Trailing zeros will fill out the rest of the address.
|
|
if (index == end) {
|
|
return true;
|
|
}
|
|
}
|
|
// If the second character wasn't ':', in order to be valid,
|
|
// the remainder of the string must match IPv4Address,
|
|
// and we must have read exactly 6 16-bit groups.
|
|
else {
|
|
return (counter[0] == 6) &&
|
|
isWellFormedIPv4Address(address.substring(index+1, end));
|
|
}
|
|
}
|
|
else {
|
|
return false;
|
|
}
|
|
|
|
// 3. Scan hex sequence after '::'.
|
|
int prevCount = counter[0];
|
|
index = scanHexSequence(address, index, end, counter);
|
|
|
|
// We've either reached the end of the string, the address ends in
|
|
// an IPv4 address, or it is invalid. scanHexSequence has already
|
|
// made sure that we have the right number of bits.
|
|
return (index == end) ||
|
|
(index != -1 && isWellFormedIPv4Address(
|
|
address.substring((counter[0] > prevCount) ? index+1 : index, end)));
|
|
}
|
|
|
|
/**
|
|
* Helper method for isWellFormedIPv6Reference which scans the
|
|
* hex sequences of an IPv6 address. It returns the index of the
|
|
* next character to scan in the address, or -1 if the string
|
|
* cannot match a valid IPv6 address.
|
|
*
|
|
* @param address the string to be scanned
|
|
* @param index the beginning index (inclusive)
|
|
* @param end the ending index (exclusive)
|
|
* @param counter a counter for the number of 16-bit sections read
|
|
* in the address
|
|
*
|
|
* @return the index of the next character to scan, or -1 if the
|
|
* string cannot match a valid IPv6 address
|
|
*/
|
|
private static int scanHexSequence (String address, int index, int end, int [] counter) {
|
|
|
|
char testChar;
|
|
int numDigits = 0;
|
|
int start = index;
|
|
|
|
// Trying to match the following productions:
|
|
// hexseq = hex4 *( ":" hex4)
|
|
// hex4 = 1*4HEXDIG
|
|
for (; index < end; ++index) {
|
|
testChar = address.charAt(index);
|
|
if (testChar == ':') {
|
|
// IPv6 addresses are 128-bit, so there can be at most eight sections.
|
|
if (numDigits > 0 && ++counter[0] > 8) {
|
|
return -1;
|
|
}
|
|
// This could be '::'.
|
|
if (numDigits == 0 || ((index+1 < end) && address.charAt(index+1) == ':')) {
|
|
return index;
|
|
}
|
|
numDigits = 0;
|
|
}
|
|
// This might be invalid or an IPv4address. If it's potentially an IPv4address,
|
|
// backup to just after the last valid character that matches hexseq.
|
|
else if (!isHex(testChar)) {
|
|
if (testChar == '.' && numDigits < 4 && numDigits > 0 && counter[0] <= 6) {
|
|
int back = index - numDigits - 1;
|
|
return (back >= start) ? back : (back+1);
|
|
}
|
|
return -1;
|
|
}
|
|
// There can be at most 4 hex digits per group.
|
|
else if (++numDigits > 4) {
|
|
return -1;
|
|
}
|
|
}
|
|
return (numDigits > 0 && ++counter[0] <= 8) ? end : -1;
|
|
}
|
|
|
|
|
|
/**
|
|
* Determine whether a char is a digit.
|
|
*
|
|
* @return true if the char is betweeen '0' and '9', false otherwise
|
|
*/
|
|
private static boolean isDigit(char p_char) {
|
|
return p_char >= '0' && p_char <= '9';
|
|
}
|
|
|
|
/**
|
|
* Determine whether a character is a hexadecimal character.
|
|
*
|
|
* @return true if the char is betweeen '0' and '9', 'a' and 'f'
|
|
* or 'A' and 'F', false otherwise
|
|
*/
|
|
private static boolean isHex(char p_char) {
|
|
return (p_char <= 'f' && (fgLookupTable[p_char] & ASCII_HEX_CHARACTERS) != 0);
|
|
}
|
|
|
|
/**
|
|
* Determine whether a char is an alphabetic character: a-z or A-Z
|
|
*
|
|
* @return true if the char is alphabetic, false otherwise
|
|
*/
|
|
private static boolean isAlpha(char p_char) {
|
|
return ((p_char >= 'a' && p_char <= 'z') || (p_char >= 'A' && p_char <= 'Z' ));
|
|
}
|
|
|
|
/**
|
|
* Determine whether a char is an alphanumeric: 0-9, a-z or A-Z
|
|
*
|
|
* @return true if the char is alphanumeric, false otherwise
|
|
*/
|
|
private static boolean isAlphanum(char p_char) {
|
|
return (p_char <= 'z' && (fgLookupTable[p_char] & MASK_ALPHA_NUMERIC) != 0);
|
|
}
|
|
|
|
/**
|
|
* Determine whether a character is a reserved character:
|
|
* ';', '/', '?', ':', '@', '&', '=', '+', '$', ',', '[', or ']'
|
|
*
|
|
* @return true if the string contains any reserved characters
|
|
*/
|
|
private static boolean isReservedCharacter(char p_char) {
|
|
return (p_char <= ']' && (fgLookupTable[p_char] & RESERVED_CHARACTERS) != 0);
|
|
}
|
|
|
|
/**
|
|
* Determine whether a char is an unreserved character.
|
|
*
|
|
* @return true if the char is unreserved, false otherwise
|
|
*/
|
|
private static boolean isUnreservedCharacter(char p_char) {
|
|
return (p_char <= '~' && (fgLookupTable[p_char] & MASK_UNRESERVED_MASK) != 0);
|
|
}
|
|
|
|
/**
|
|
* Determine whether a char is a URI character (reserved or
|
|
* unreserved, not including '%' for escaped octets).
|
|
*
|
|
* @return true if the char is a URI character, false otherwise
|
|
*/
|
|
private static boolean isURICharacter (char p_char) {
|
|
return (p_char <= '~' && (fgLookupTable[p_char] & MASK_URI_CHARACTER) != 0);
|
|
}
|
|
|
|
/**
|
|
* Determine whether a char is a scheme character.
|
|
*
|
|
* @return true if the char is a scheme character, false otherwise
|
|
*/
|
|
private static boolean isSchemeCharacter (char p_char) {
|
|
return (p_char <= 'z' && (fgLookupTable[p_char] & MASK_SCHEME_CHARACTER) != 0);
|
|
}
|
|
|
|
/**
|
|
* Determine whether a char is a userinfo character.
|
|
*
|
|
* @return true if the char is a userinfo character, false otherwise
|
|
*/
|
|
private static boolean isUserinfoCharacter (char p_char) {
|
|
return (p_char <= 'z' && (fgLookupTable[p_char] & MASK_USERINFO_CHARACTER) != 0);
|
|
}
|
|
|
|
/**
|
|
* Determine whether a char is a path character.
|
|
*
|
|
* @return true if the char is a path character, false otherwise
|
|
*/
|
|
private static boolean isPathCharacter (char p_char) {
|
|
return (p_char <= '~' && (fgLookupTable[p_char] & MASK_PATH_CHARACTER) != 0);
|
|
}
|
|
|
|
|
|
/**
|
|
* Determine whether a given string contains only URI characters (also
|
|
* called "uric" in RFC 2396). uric consist of all reserved
|
|
* characters, unreserved characters and escaped characters.
|
|
*
|
|
* @return true if the string is comprised of uric, false otherwise
|
|
*/
|
|
private static boolean isURIString(String p_uric) {
|
|
if (p_uric == null) {
|
|
return false;
|
|
}
|
|
int end = p_uric.length();
|
|
char testChar = '\0';
|
|
for (int i = 0; i < end; i++) {
|
|
testChar = p_uric.charAt(i);
|
|
if (testChar == '%') {
|
|
if (i+2 >= end ||
|
|
!isHex(p_uric.charAt(i+1)) ||
|
|
!isHex(p_uric.charAt(i+2))) {
|
|
return false;
|
|
}
|
|
else {
|
|
i += 2;
|
|
continue;
|
|
}
|
|
}
|
|
if (isURICharacter(testChar)) {
|
|
continue;
|
|
}
|
|
else {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
}
|