mirror of
https://github.com/mirror/wget.git
synced 2024-12-30 23:10:13 +08:00
114 lines
2.4 KiB
C
114 lines
2.4 KiB
C
/*
|
|
* Copyright (c) 2017-2019 Free Software Foundation, Inc.
|
|
*
|
|
* This file is part of GNU Wget.
|
|
*
|
|
* GNU Wget 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 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* GNU Wget 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 Wget. If not, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <config.h>
|
|
|
|
#include <sys/types.h>
|
|
#include <dirent.h> // opendir, readdir
|
|
#include <stdint.h> // uint8_t
|
|
#include <stdio.h> // fmemopen
|
|
#include <string.h> // strncmp
|
|
#include <fcntl.h> // open flags
|
|
#include <unistd.h> // close
|
|
#include <setjmp.h> // longjmp, setjmp
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
// declarations for wget internal functions
|
|
int main_wget(int argc, const char **argv);
|
|
void cleanup(void);
|
|
FILE *fopen_wget(const char *pathname, const char *mode);
|
|
FILE *fopen_wgetrc(const char *pathname, const char *mode);
|
|
void exit_wget(int status);
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#include "fuzzer.h"
|
|
|
|
static const uint8_t *g_data;
|
|
static size_t g_size;
|
|
|
|
FILE *fopen_wget(const char *pathname, const char *mode)
|
|
{
|
|
return fopen("/dev/null", mode);
|
|
}
|
|
|
|
FILE *fopen_wgetrc(const char *pathname, const char *mode)
|
|
{
|
|
#ifdef HAVE_FMEMOPEN
|
|
return fmemopen((void *) g_data, g_size, mode);
|
|
#else
|
|
return NULL;
|
|
#endif
|
|
}
|
|
|
|
static int do_jump;
|
|
static jmp_buf jmpbuf;
|
|
#ifdef FUZZING
|
|
void exit_wget(int status)
|
|
{
|
|
longjmp(jmpbuf, 1);
|
|
}
|
|
#elif defined HAVE_DLFCN_H
|
|
#include <dlfcn.h> // dlsym
|
|
#ifndef RTLD_NEXT
|
|
#define RTLD_NEXT RTLD_GLOBAL
|
|
#endif
|
|
void exit(int status)
|
|
{
|
|
if (do_jump) {
|
|
longjmp(jmpbuf, 1);
|
|
} else {
|
|
void (*libc_exit)(int) = (void(*)(int)) dlsym (RTLD_NEXT, "exit");
|
|
libc_exit(status);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
|
|
{
|
|
static const char *argv[] = { "wget", "-q" };
|
|
|
|
if (size > 2048) // same as max_len = ... in .options file
|
|
return 0;
|
|
|
|
g_data = data;
|
|
g_size = size;
|
|
|
|
CLOSE_STDERR
|
|
|
|
do_jump = 1;
|
|
|
|
if (setjmp(jmpbuf))
|
|
goto done;
|
|
|
|
main_wget(sizeof(argv)/sizeof(argv[0]), argv);
|
|
|
|
done:
|
|
cleanup();
|
|
|
|
do_jump = 0;
|
|
|
|
RESTORE_STDERR
|
|
|
|
return 0;
|
|
}
|