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/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* SPDX-License-Identifier: MPL-2.0
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, you can obtain one at https://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
#include <errno.h>
#include <fcntl.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <unistd.h>
#include "fuzz.h"
#ifndef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
#include <dirent.h>
static void
test_one_file(const char *filename) {
int fd;
struct stat st;
char *data;
ssize_t n;
if ((fd = open(filename, O_RDONLY)) == -1) {
fprintf(stderr, "Failed to open %s: %s\n", filename,
strerror(errno));
return;
}
if (fstat(fd, &st) != 0) {
fprintf(stderr, "Failed to stat %s: %s\n", filename,
strerror(errno));
goto closefd;
}
data = malloc(st.st_size);
n = read(fd, data, st.st_size);
if (n == st.st_size) {
printf("testing %zd bytes from %s\n", n, filename);
fflush(stdout);
LLVMFuzzerTestOneInput((const uint8_t *)data, n);
fflush(stderr);
} else {
if (n < 0) {
fprintf(stderr,
"Failed to read %zd bytes from %s: %s\n",
(ssize_t)st.st_size, filename, strerror(errno));
} else {
fprintf(stderr,
"Failed to read %zd bytes from %s, got %zd\n",
(ssize_t)st.st_size, filename, n);
}
}
free(data);
closefd:
close(fd);
}
static void
test_all_from(const char *dirname) {
DIR *dirp;
struct dirent *dp;
dirp = opendir(dirname);
if (dirp == NULL) {
return;
}
while ((dp = readdir(dirp)) != NULL) {
char filename[strlen(dirname) + strlen(dp->d_name) + 2];
if (dp->d_name[0] == '.') {
continue;
}
snprintf(filename, sizeof(filename), "%s/%s", dirname,
dp->d_name);
test_one_file(filename);
}
closedir(dirp);
}
int
main(int argc, char **argv) {
int ret;
char corpusdir[PATH_MAX];
const char *target = strrchr(argv[0], '/');
ret = LLVMFuzzerInitialize(&argc, &argv);
if (ret != 0) {
fprintf(stderr, "LLVMFuzzerInitialize failure: %d\n", ret);
return 1;
}
if (argv[1] != NULL && strcmp(argv[1], "-d") == 0) {
debug = true;
argv++;
argc--;
}
if (argv[1] != NULL) {
while (argv[1] != NULL) {
test_one_file(argv[1]);
argv++;
argc--;
}
POST(argc);
return 0;
}
target = (target != NULL) ? target + 1 : argv[0];
if (strncmp(target, "lt-", 3) == 0) {
target += 3;
}
snprintf(corpusdir, sizeof(corpusdir), FUZZDIR "/%s.in", target);
test_all_from(corpusdir);
return 0;
}
#elif __AFL_COMPILER
int
main(int argc, char **argv) {
int ret;
unsigned char buf[64 * 1024];
LLVMFuzzerInitialize(&argc, &argv);
if (ret != 0) {
fprintf(stderr, "LLVMFuzzerInitialize failure: %d\n", ret);
return 1;
}
#ifdef __AFL_LOOP
while (__AFL_LOOP(10000)) { /* only works with afl-clang-fast */
#else /* ifdef __AFL_LOOP */
{
#endif /* ifdef __AFL_LOOP */
ret = fread(buf, 1, sizeof(buf), stdin);
if (ret < 0) {
return 0;
}
LLVMFuzzerTestOneInput(buf, ret);
}
return 0;
}
#endif /* FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION */
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