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92 lines
2.2 KiB
92 lines
2.2 KiB
1 month ago
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/*
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Copyright 2015 Google LLC All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at:
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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/*
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american fuzzy lop - sample argv fuzzing wrapper
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------------------------------------------------
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Written by Michal Zalewski <lcamtuf@google.com>
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This file shows a simple way to fuzz command-line parameters with stock
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afl-fuzz. To use, add:
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#include "/path/to/argv-fuzz-inl.h"
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...to the file containing main(), ideally placing it after all the
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standard includes. Next, put AFL_INIT_ARGV(); near the very beginning of
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main().
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This will cause the program to read NUL-delimited input from stdin and
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put it in argv[]. Two subsequent NULs terminate the array.
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If you would like to always preserve argv[0], use this instead:
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AFL_INIT_SET0("prog_name");
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*/
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#ifndef _HAVE_ARGV_FUZZ_INL
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#define _HAVE_ARGV_FUZZ_INL
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#include <unistd.h>
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#include <ctype.h>
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#define AFL_INIT_ARGV() do { argv = afl_init_argv(&argc); } while (0)
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#define AFL_INIT_SET0(_p) do { \
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argv = afl_init_argv(&argc); \
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argv[0] = (_p); \
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if (!argc) argc = 1; \
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} while (0)
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#define MAX_CMDLINE_LEN 100000
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#define MAX_CMDLINE_PAR 1000
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static char** afl_init_argv(int* argc) {
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static char in_buf[MAX_CMDLINE_LEN];
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static char* ret[MAX_CMDLINE_PAR];
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char* ptr = in_buf;
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int rc = 1; /* start after argv[0] */
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if (read(0, in_buf, MAX_CMDLINE_LEN - 2) < 0);
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while (*ptr) {
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ret[rc] = ptr;
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/* insert '\0' at the end of ret[rc] on first space-sym */
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while (*ptr && !isspace(*ptr)) ptr++;
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*ptr = '\0';
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ptr++;
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/* skip more space-syms */
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while (*ptr && isspace(*ptr)) ptr++;
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rc++;
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}
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*argc = rc;
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return ret;
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}
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#undef MAX_CMDLINE_LEN
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#undef MAX_CMDLINE_PAR
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#endif /* !_HAVE_ARGV_FUZZ_INL */
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