libpsl/fuzz/main.c

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/*
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* Copyright(c) 2017-2018 Tim Ruehsen
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*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* This file is part of libpsl.
*/
#include "../config.h"
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/stat.h>
#include "fuzzer.h"
#ifdef TEST_RUN
#include <dirent.h>
#ifdef HAVE_ALLOCA_H
# include <alloca.h>
#endif
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static void test_all_from(const char *dirname)
{
DIR *dirp;
struct dirent *dp;
if ((dirp = opendir(dirname))) {
while ((dp = readdir(dirp))) {
if (*dp->d_name == '.') continue;
char fname[strlen(dirname) + strlen(dp->d_name) + 2];
snprintf(fname, sizeof(fname), "%s/%s", dirname, dp->d_name);
int fd;
if ((fd = open(fname, O_RDONLY)) == -1) {
fprintf(stderr, "Failed to open %s (%d)\n", fname, errno);
continue;
}
struct stat st;
if (fstat(fd, &st) != 0) {
fprintf(stderr, "Failed to stat %d (%d)\n", fd, errno);
close(fd);
continue;
}
uint8_t *data = malloc(st.st_size);
ssize_t n;
if ((n = read(fd, data, st.st_size)) == st.st_size) {
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printf("testing %llu bytes from '%s'\n", (unsigned long long) st.st_size, fname);
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LLVMFuzzerTestOneInput(data, st.st_size);
} else
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fprintf(stderr, "Failed to read %llu bytes from %s (%d), got %zd\n", (unsigned long long) st.st_size, fname, errno, n);
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free(data);
close(fd);
}
closedir(dirp);
}
}
int main(int argc, char **argv)
{
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const char *target;
char corporadir[sizeof(SRCDIR) + 1 + strlen(argv[0]) + 8];
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/* if VALGRIND testing is enabled, we have to call ourselves with valgrind checking */
if (argc == 1) {
const char *valgrind = getenv("TESTS_VALGRIND");
if (valgrind && *valgrind) {
size_t cmdsize = strlen(valgrind) + strlen(argv[0]) + 32;
char *cmd = alloca(cmdsize);
snprintf(cmd, cmdsize, "TESTS_VALGRIND="" %s %s", valgrind, argv[0]);
return system(cmd) != 0;
}
}
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target = strrchr(argv[0], '/');
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target = target ? target + 1 : argv[0];
snprintf(corporadir, sizeof(corporadir), SRCDIR "/%s.in", target);
test_all_from(corporadir);
snprintf(corporadir, sizeof(corporadir), SRCDIR "/%s.repro", target);
test_all_from(corporadir);
return 0;
}
#else
#ifndef __AFL_LOOP
static int __AFL_LOOP(int n)
{
static int first = 1;
if (first) {
first = 0;
return 1;
}
return 0;
}
#endif
int main(int argc, char **argv)
{
int ret;
unsigned char buf[64 * 1024];
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while (__AFL_LOOP(10000)) { /* only works with afl-clang-fast */
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ret = fread(buf, 1, sizeof(buf), stdin);
if (ret < 0)
return 0;
LLVMFuzzerTestOneInput(buf, ret);
}
return 0;
}
#endif /* TEST_RUN */