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/*
* Copyright (c) Meta Platforms, Inc. and affiliates.
* All rights reserved.
*
* This source code is licensed under both the BSD-style license (found in the
* LICENSE file in the root directory of this source tree) and the GPLv2 (found
* in the COPYING file in the root directory of this source tree).
* You may select, at your option, one of the above-listed licenses.
*/
#include "fuzz.h"
#include "fuzz_helpers.h"
#include "util.h"
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
int main(int argc, char const **argv) {
size_t const kMaxFileSize = (size_t)1 << 27;
int const kFollowLinks = 1;
FileNamesTable* files;
const char** const fnTable = argv + 1;
uint8_t *buffer = NULL;
size_t bufferSize = 0;
unsigned i;
unsigned numFilesTested = 0;
int ret = 0;
{
unsigned const numFiles = (unsigned)(argc - 1);
#ifdef UTIL_HAS_CREATEFILELIST
files = UTIL_createExpandedFNT(fnTable, numFiles, kFollowLinks);
#else
files = UTIL_createFNT_fromROTable(fnTable, numFiles);
assert(numFiles == files->tableSize);
#endif
}
if (!files) {
fprintf(stderr, "ERROR: Failed to create file names table\n");
return 1;
}
if (files->tableSize == 0)
fprintf(stderr, "WARNING: No files passed to %s\n", argv[0]);
for (i = 0; i < files->tableSize; ++i) {
char const *fileName = files->fileNames[i];
size_t const fileSize = UTIL_getFileSize(fileName);
size_t readSize;
FILE *file;
DEBUGLOG(3, "Running %s", fileName);
/* Check that it is a regular file, and that the fileSize is valid.
* If it is not a regular file, then it may have been deleted since we
* constructed the list, so just skip it, but return an error exit code.
*/
if (!UTIL_isRegularFile(fileName)) {
ret = 1;
continue;
}
FUZZ_ASSERT_MSG(fileSize <= kMaxFileSize, fileName);
/* Ensure we have a large enough buffer allocated */
if (fileSize > bufferSize) {
free(buffer);
buffer = (uint8_t *)malloc(fileSize);
FUZZ_ASSERT_MSG(buffer, fileName);
bufferSize = fileSize;
}
/* Open the file */
file = fopen(fileName, "rb");
FUZZ_ASSERT_MSG(file, fileName);
/* Read the file */
readSize = fread(buffer, 1, fileSize, file);
FUZZ_ASSERT_MSG(readSize == fileSize, fileName);
/* Close the file */
fclose(file);
/* Run the fuzz target */
LLVMFuzzerTestOneInput(buffer, fileSize);
++numFilesTested;
}
fprintf(stderr, "Tested %u files: ", numFilesTested);
if (ret == 0) {
fprintf(stderr, "Success!\n");
} else {
fprintf(stderr, "Failure!\n");
}
free(buffer);
UTIL_freeFileNamesTable(files);
return ret;
}
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