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/* Copyright 2019 Guido Vranken
*
* 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 <cstddef>
#include <cstdint>
#include <limits>
#include <fuzzing/datasource/datasource.hpp>
#include <fuzzing/memory.hpp>
#include "FLAC++/encoder.h"
#include "common.h"
namespace FLAC {
namespace Encoder {
class FuzzerStream : public Stream {
private:
// fuzzing::datasource::Datasource& ds;
public:
FuzzerStream(fuzzing::datasource::Datasource&) :
Stream() { }
::FLAC__StreamEncoderWriteStatus write_callback(const FLAC__byte buffer[], size_t bytes, uint32_t /* samples */, uint32_t /* current_frame */) override {
fuzzing::memory::memory_test(buffer, bytes);
#if 0
try {
if ( ds.Get<bool>() == true ) {
return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
}
} catch ( ... ) { }
#endif
return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
}
};
}
}
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
fuzzing::datasource::Datasource ds(data, size);
FLAC::Encoder::FuzzerStream encoder(ds);
try {
const int channels = ds.Get<uint8_t>();
const int bps = ds.Get<uint8_t>();
encoder.set_channels(channels);
encoder.set_bits_per_sample(bps);
{
const bool res = encoder.set_streamable_subset(ds.Get<bool>());
fuzzing::memory::memory_test(res);
}
{
const bool res = encoder.set_ogg_serial_number(ds.Get<long>());
fuzzing::memory::memory_test(res);
}
{
const bool res = encoder.set_verify(ds.Get<bool>());
fuzzing::memory::memory_test(res);
}
{
const bool res = encoder.set_compression_level(ds.Get<uint8_t>());
fuzzing::memory::memory_test(res);
}
{
const bool res = encoder.set_do_exhaustive_model_search(ds.Get<bool>());
fuzzing::memory::memory_test(res);
}
{
const bool res = encoder.set_do_mid_side_stereo(ds.Get<bool>());
fuzzing::memory::memory_test(res);
}
{
const bool res = encoder.set_loose_mid_side_stereo(ds.Get<bool>());
fuzzing::memory::memory_test(res);
}
{
const auto s = ds.Get<std::string>();
const bool res = encoder.set_apodization(s.data());
fuzzing::memory::memory_test(res);
}
{
const bool res = encoder.set_max_lpc_order(ds.Get<uint8_t>());
fuzzing::memory::memory_test(res);
}
{
const bool res = encoder.set_qlp_coeff_precision(ds.Get<uint32_t>());
fuzzing::memory::memory_test(res);
}
{
const bool res = encoder.set_do_qlp_coeff_prec_search(ds.Get<bool>());
fuzzing::memory::memory_test(res);
}
{
const bool res = encoder.set_do_escape_coding(ds.Get<bool>());
fuzzing::memory::memory_test(res);
}
{
const bool res = encoder.set_min_residual_partition_order(ds.Get<uint32_t>());
fuzzing::memory::memory_test(res);
}
{
const bool res = encoder.set_max_residual_partition_order(ds.Get<uint32_t>());
fuzzing::memory::memory_test(res);
}
{
const bool res = encoder.set_rice_parameter_search_dist(ds.Get<uint32_t>());
fuzzing::memory::memory_test(res);
}
{
const bool res = encoder.set_total_samples_estimate(ds.Get<uint64_t>());
fuzzing::memory::memory_test(res);
}
{
const bool res = encoder.set_blocksize(ds.Get<uint16_t>());
fuzzing::memory::memory_test(res);
}
{
const bool res = encoder.set_limit_min_bitrate(ds.Get<bool>());
fuzzing::memory::memory_test(res);
}
{
const bool res = encoder.set_sample_rate(ds.Get<uint32_t>());
fuzzing::memory::memory_test(res);
}
if ( size > 2 * 65535 * 4 ) {
/* With large inputs and expensive options enabled, the fuzzer can get *really* slow.
* Some combinations can make the fuzzer timeout (>60 seconds). However, while combining
* options makes the fuzzer slower, most options do not expose new code when combined.
* Therefore, combining slow options is disabled for large inputs. Any input containing
* more than 65536 * 2 samples of 32 bits each (max blocksize, stereo) is considered large
*/
encoder.set_do_qlp_coeff_prec_search(false);
encoder.set_do_exhaustive_model_search(false);
}
if ( size > 2 * 4096 * 4 + 250 ) {
/* With subdivide_tukey in the mix testing apodizations can get really expensive. Therefore
* this is disabled for inputs of more than one whole stereo block of 32-bit inputs plus a
* bit of overhead */
encoder.set_apodization("");
}
{
::FLAC__StreamEncoderInitStatus ret;
if ( ds.Get<bool>() ) {
ret = encoder.init();
} else {
ret = encoder.init_ogg();
}
if ( ret != FLAC__STREAM_ENCODER_INIT_STATUS_OK ) {
goto end;
}
}
/* These sets must fail, because encoder is already initialized */
{
bool res = false;
res = res || encoder.set_streamable_subset(true);
res = res || encoder.set_ogg_serial_number(0);
res = res || encoder.set_verify(true);
res = res || encoder.set_compression_level(0);
res = res || encoder.set_do_exhaustive_model_search(true);
res = res || encoder.set_do_mid_side_stereo(true);
res = res || encoder.set_loose_mid_side_stereo(true);
res = res || encoder.set_apodization("test");
res = res || encoder.set_max_lpc_order(0);
res = res || encoder.set_qlp_coeff_precision(0);
res = res || encoder.set_do_qlp_coeff_prec_search(true);
res = res || encoder.set_do_escape_coding(true);
res = res || encoder.set_min_residual_partition_order(0);
res = res || encoder.set_max_residual_partition_order(0);
res = res || encoder.set_rice_parameter_search_dist(0);
res = res || encoder.set_total_samples_estimate(0);
res = res || encoder.set_channels(channels);
res = res || encoder.set_bits_per_sample(16);
res = res || encoder.set_limit_min_bitrate(true);
res = res || encoder.set_blocksize(3021);
res = res || encoder.set_sample_rate(44100);
fuzzing::memory::memory_test(res);
if(res)
abort();
}
{
/* XORing values as otherwise compiler will optimize, apparently */
bool res = false;
res = res != encoder.get_streamable_subset();
res = res != encoder.get_verify();
res = res != encoder.get_do_exhaustive_model_search();
res = res != encoder.get_do_mid_side_stereo();
res = res != encoder.get_loose_mid_side_stereo();
res = res != encoder.get_max_lpc_order();
res = res != encoder.get_qlp_coeff_precision();
res = res != encoder.get_do_qlp_coeff_prec_search();
res = res != encoder.get_do_escape_coding();
res = res != encoder.get_min_residual_partition_order();
res = res != encoder.get_max_residual_partition_order();
res = res != encoder.get_rice_parameter_search_dist();
res = res != encoder.get_total_samples_estimate();
res = res != encoder.get_channels();
res = res != encoder.get_bits_per_sample();
res = res != encoder.get_limit_min_bitrate();
res = res != encoder.get_blocksize();
res = res != encoder.get_sample_rate();
fuzzing::memory::memory_test(res);
}
while ( ds.Get<bool>() ) {
{
auto dat = ds.GetVector<FLAC__int32>();
if( ds.Get<bool>() )
/* Mask */
for (size_t i = 0; i < dat.size(); i++)
/* If we get here, bps is 4 or larger, or init will have failed */
dat[i] = (int32_t)(((uint32_t)(dat[i]) << (32-bps)) >> (32-bps));
const uint32_t samples = dat.size() / channels;
if ( samples > 0 ) {
const int32_t* ptr = dat.data();
const bool res = encoder.process_interleaved(ptr, samples);
fuzzing::memory::memory_test(res);
}
}
}
} catch ( ... ) { }
end:
{
const bool res = encoder.finish();
fuzzing::memory::memory_test(res);
}
return 0;
}
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