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/******************************************************************************
*
* Project: GDAL
* Purpose: Fuzzer
* Author: Even Rouault, even.rouault at spatialys.com
*
******************************************************************************
* Copyright (c) 2017, Even Rouault <even.rouault at spatialys.com>
*
* 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.
****************************************************************************/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
extern "C"
{
int LLVMFuzzerTestOneInput(const void *buf, size_t len);
int LLVMFuzzerInitialize(int *argc, char ***argv);
}
template <class T> static void CPL_IGNORE_RET_VAL(T)
{
}
static void Usage(int, char *argv[])
{
fprintf(stderr, "%s [--help] [-repeat N] filename.\n", argv[0]);
exit(1);
}
int main(int argc, char *argv[])
{
LLVMFuzzerInitialize(&argc, &argv);
int nRet = 0;
void *buf = nullptr;
int nLen = 0;
int nLoops = 1;
const char *pszFilename = nullptr;
for (int i = 1; i < argc; i++)
{
if (i + 1 < argc && strcmp(argv[i], "-repeat") == 0)
{
nLoops = atoi(argv[i + 1]);
i++;
}
else if (strcmp(argv[i], "-dummy") == 0)
{
return LLVMFuzzerTestOneInput(" ", 1);
}
else if (strcmp(argv[i], "--help") == 0)
{
Usage(argc, argv);
}
else if (argv[i][0] == '-')
{
fprintf(stderr, "Unrecognized option: %s", argv[i]);
Usage(argc, argv);
}
else
{
pszFilename = argv[i];
}
}
if (pszFilename == nullptr)
{
fprintf(stderr, "No filename specified\n");
Usage(argc, argv);
}
FILE *f = fopen(pszFilename, "rb");
if (!f)
{
fprintf(stderr, "%s does not exist.\n", pszFilename);
exit(1);
}
fseek(f, 0, SEEK_END);
nLen = (int)ftell(f);
fseek(f, 0, SEEK_SET);
buf = malloc(nLen);
if (!buf)
{
fprintf(stderr, "malloc failed.\n");
fclose(f);
exit(1);
}
CPL_IGNORE_RET_VAL(fread(buf, nLen, 1, f));
fclose(f);
for (int i = 0; i < nLoops; i++)
{
nRet = LLVMFuzzerTestOneInput(buf, nLen);
if (nRet != 0)
break;
}
free(buf);
return nRet;
}
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