wget/fuzz/wget_progress_fuzzer.c
Tim Rühsen 34573bdf46 Add new fuzzer for the progress bar code
* Makefile.am: Add wget_progress_fuzzer.
* wget_progress_fuzzer.c: New file.
2020-01-10 13:56:39 +01:00

143 lines
3.7 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 <stdlib.h> // free
#include <fcntl.h> // open flags
#include <unistd.h> // close
#include <setjmp.h> // longjmp, setjmp
#include "wget.h"
#undef fopen_wgetrc
#ifdef __cplusplus
extern "C" {
#endif
#include "progress.h"
// 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"
FILE *fopen_wget(const char *pathname, const char *mode)
{
(void) pathname;
return fopen("/dev/null", mode);
}
FILE *fopen_wgetrc(const char *pathname, const char *mode)
{
(void) pathname;
(void) mode;
return NULL;
}
#ifdef FUZZING
void exit_wget(int status)
{
(void) status;
}
#endif
#define NAMEPOS (2 * sizeof(wgint) + sizeof(double))
int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
{
void *progress;
if (size > 4096) // same as max_len = ... in .options file
return 0;
if (size < NAMEPOS)
return 0;
// CLOSE_STDERR
wgint start = ((wgint *) data)[0];
wgint end = ((wgint *) data)[1];
double dltime = ((wgint *) data)[2];
if (start < 0 || end < 0)
return 0;
if (start > end) {
wgint x = start;
start = end;
end = x;
}
// double dltime = ((double *) (data + 2 * sizeof(wgint)))[0];
char *filename = strndup((char *) (data + NAMEPOS), size - NAMEPOS);
// printf("%ld %ld %lf %s\n", start, end, dltime, filename);
set_progress_implementation("bar:force"); // [:force][:noscroll]
progress = progress_create (filename, start, end);
progress_update (progress, 0, dltime);
progress_update (progress, end - start, dltime);
progress_finish (progress, dltime);
set_progress_implementation("dot:default");// [:default|:binary|:mega|:giga]
progress = progress_create (filename, start, end);
progress_update (progress, 0, dltime);
progress_update (progress, end - start, dltime);
progress_finish (progress, dltime);
set_progress_implementation("dot:binary");// [:default|:binary|:mega|:giga]
progress = progress_create (filename, start, end);
progress_update (progress, 0, dltime);
progress_update (progress, end - start, dltime);
progress_finish (progress, dltime);
set_progress_implementation("dot:mega");// [:default|:binary|:mega|:giga]
progress = progress_create (filename, start, end);
progress_update (progress, 0, dltime);
progress_update (progress, end - start, dltime);
progress_finish (progress, dltime);
set_progress_implementation("dot:giga");// [:default|:binary|:mega|:giga]
progress = progress_create (filename, start, end);
progress_update (progress, 0, dltime);
progress_update (progress, end - start, dltime);
progress_finish (progress, dltime);
free(filename);
// RESTORE_STDERR
return 0;
}