/*
* libgit2 config file parser fuzz target.
*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#include <git2.h>
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <limits.h>
#include <errno.h>
#define UNUSED(x) (void)(x)
int foreach_cb(const git_config_entry *entry, void *payload)
{
UNUSED(entry);
UNUSED(payload);
return 0;
}
static char path[] = "/tmp/git.XXXXXX";
static int fd = -1;
int LLVMFuzzerInitialize(int *argc, char ***argv)
{
UNUSED(argc);
UNUSED(argv);
if (git_libgit2_init() < 0)
abort();
fd = mkstemp(path);
if (fd < 0) {
abort();
}
return 0;
}
int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
{
git_config *cfg = NULL;
int err = 0;
size_t total = 0;
if (ftruncate(fd, 0) !=0 ) {
abort();
}
if (lseek(fd, 0, SEEK_SET) != 0) {
abort();
}
while (total < size) {
ssize_t written = write(fd, data, size);
if (written < 0 && errno != EINTR)
abort();
if (written < 0)
continue;
total += written;
}
err = git_config_open_ondisk(&cfg, path);
if (err == 0) {
git_config_foreach(cfg, foreach_cb, NULL);
git_config_free(cfg);
}
return 0;
}
