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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 "FLAC++/decoder.h"
#include "FLAC++/metadata.h"
#include "common.h"
#define MAX_NUM_METADATA_BLOCKS 2048
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);
return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
}
};
}
namespace Decoder {
class FuzzerDecoder : public Stream {
private:
fuzzing::datasource::Datasource& ds;
FLAC::Encoder::FuzzerStream& encoder;
public:
FuzzerDecoder(fuzzing::datasource::Datasource& dsrc, FLAC::Encoder::FuzzerStream& encoder_arg) :
Stream(), ds(dsrc), encoder(encoder_arg) { }
::FLAC__StreamMetadata * metadata_blocks[MAX_NUM_METADATA_BLOCKS] = {0};
int num_metadata_blocks = 0;
void metadata_callback(const ::FLAC__StreamMetadata *metadata) override {
if(num_metadata_blocks < MAX_NUM_METADATA_BLOCKS)
if((metadata_blocks[num_metadata_blocks] = FLAC__metadata_object_clone(metadata)) != NULL)
num_metadata_blocks++;
}
::FLAC__StreamDecoderReadStatus read_callback(FLAC__byte buffer[], size_t *bytes) override {
try {
const size_t maxCopySize = *bytes;
if ( maxCopySize > 0 ) {
/* memset just to test if this overwrites anything, and triggers ASAN */
memset(buffer, 0, maxCopySize);
}
const auto data = ds.GetData(0);
const auto dataSize = data.size();
const auto copySize = std::min(maxCopySize, dataSize);
if ( copySize > 0 ) {
memcpy(buffer, data.data(), copySize);
}
*bytes = copySize;
return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE;
} catch ( ... ) {
return FLAC__STREAM_DECODER_READ_STATUS_ABORT;
}
}
::FLAC__StreamDecoderWriteStatus write_callback(const ::FLAC__Frame *frame, const FLAC__int32 * const buffer[]) override {
{
fuzzing::memory::memory_test(&(frame->header), sizeof(frame->header));
fuzzing::memory::memory_test(&(frame->footer), sizeof(frame->footer));
}
{
const auto numChannels = get_channels();
const size_t bytesPerChannel = frame->header.blocksize * sizeof(FLAC__int32);
for (size_t i = 0; i < numChannels; i++) {
fuzzing::memory::memory_test(buffer[i], bytesPerChannel);
}
}
/* Data is checked, now pass it towards encoder */
if(encoder.get_state() == FLAC__STREAM_ENCODER_OK) {
if(encoder.get_channels() != get_channels())
return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
if(encoder.get_bits_per_sample() != get_bits_per_sample())
return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
encoder.process(buffer, frame->header.blocksize);
return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
}
else
return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
}
void error_callback(::FLAC__StreamDecoderErrorStatus status) override {
fuzzing::memory::memory_test(status);
}
};
}
}
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
fuzzing::datasource::Datasource ds(data, size);
FLAC::Encoder::FuzzerStream encoder(ds);
FLAC::Decoder::FuzzerDecoder decoder(ds, encoder);
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_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 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_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_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);
}
decoder.set_metadata_respond_all();
{
::FLAC__StreamDecoderInitStatus ret;
if ( ds.Get<bool>() ) {
ret = decoder.init();
} else {
ret = decoder.init_ogg();
}
if ( ret != FLAC__STREAM_DECODER_INIT_STATUS_OK ) {
goto end;
}
decoder.process_until_end_of_metadata();
if(decoder.num_metadata_blocks > 0)
encoder.set_metadata(decoder.metadata_blocks, decoder.num_metadata_blocks);
}
{
::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);
}
decoder.process_until_end_of_stream();
} catch ( ... ) { }
end:
{
const bool res = encoder.finish();
fuzzing::memory::memory_test(res);
}
{
const bool res = decoder.finish();
fuzzing::memory::memory_test(res);
}
for(int i = 0; i < decoder.num_metadata_blocks; i++)
FLAC__metadata_object_delete(decoder.metadata_blocks[i]);
return 0;
}
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