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|
#include <cstddef>
#include <cstdint>
#include <fuzzing/datasource/datasource.hpp>
#include <fuzzing/memory.hpp>
#include "FLAC++/decoder.h"
template <> FLAC__MetadataType fuzzing::datasource::Base::Get<FLAC__MetadataType>(const uint64_t id) {
(void)id;
switch ( Get<uint8_t>() ) {
case 0:
return FLAC__METADATA_TYPE_STREAMINFO;
case 1:
return FLAC__METADATA_TYPE_PADDING;
case 2:
return FLAC__METADATA_TYPE_APPLICATION;
case 3:
return FLAC__METADATA_TYPE_SEEKTABLE;
case 4:
return FLAC__METADATA_TYPE_VORBIS_COMMENT;
case 5:
return FLAC__METADATA_TYPE_CUESHEET;
case 6:
return FLAC__METADATA_TYPE_PICTURE;
case 7:
return FLAC__METADATA_TYPE_UNDEFINED;
case 8:
return FLAC__MAX_METADATA_TYPE;
default:
return FLAC__METADATA_TYPE_STREAMINFO;
}
}
namespace FLAC {
namespace Decoder {
class FuzzerStream : public Stream {
private:
fuzzing::datasource::Datasource& ds;
public:
FuzzerStream(fuzzing::datasource::Datasource& dsrc) :
Stream(), ds(dsrc) { }
::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);
}
}
try {
if ( ds.Get<bool>() == true ) {
return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
}
} catch ( ... ) { }
return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
}
void error_callback(::FLAC__StreamDecoderErrorStatus status) override {
fuzzing::memory::memory_test(status);
}
void metadata_callback(const ::FLAC__StreamMetadata *metadata) override {
fuzzing::memory::memory_test(metadata->type);
fuzzing::memory::memory_test(metadata->is_last);
fuzzing::memory::memory_test(metadata->length);
fuzzing::memory::memory_test(metadata->data);
}
::FLAC__StreamDecoderSeekStatus seek_callback(FLAC__uint64 absolute_byte_offset) override {
fuzzing::memory::memory_test(absolute_byte_offset);
try {
if ( ds.Get<bool>() == true ) {
return FLAC__STREAM_DECODER_SEEK_STATUS_OK;
} else {
return FLAC__STREAM_DECODER_SEEK_STATUS_ERROR;
}
} catch ( ... ) {
return FLAC__STREAM_DECODER_SEEK_STATUS_OK;
}
}
#if 0
::FLAC__StreamDecoderTellStatus tell_callback(FLAC__uint64 *absolute_byte_offset) override {
fuzzing::memory::memory_test(*absolute_byte_offset);
try {
if ( ds.Get<bool>() == true ) {
return FLAC__STREAM_DECODER_TELL_STATUS_OK;
} else {
return FLAC__STREAM_DECODER_TELL_STATUS_ERROR;
}
} catch ( ... ) {
return FLAC__STREAM_DECODER_TELL_STATUS_OK;
}
}
::FLAC__StreamDecoderLengthStatus length_callback(FLAC__uint64 *stream_length) override {
fuzzing::memory::memory_test(*stream_length);
try {
if ( ds.Get<bool>() == true ) {
return FLAC__STREAM_DECODER_LENGTH_STATUS_OK;
} else {
return FLAC__STREAM_DECODER_LENGTH_STATUS_ERROR;
}
} catch ( ... ) {
return FLAC__STREAM_DECODER_LENGTH_STATUS_OK;
}
}
#endif
};
}
}
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
fuzzing::datasource::Datasource ds(data, size);
FLAC::Decoder::FuzzerStream decoder(ds);
try {
{
::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;
}
}
if ( ds.Get<bool>() ) {
#ifdef FUZZER_DEBUG
printf("set_ogg_serial_number\n");
#endif
decoder.set_ogg_serial_number(ds.Get<long>());
}
if ( ds.Get<bool>() ) {
#ifdef FUZZER_DEBUG
printf("set_md5_checking\n");
#endif
decoder.set_md5_checking(ds.Get<bool>());
}
if ( ds.Get<bool>() ) {
#ifdef FUZZER_DEBUG
printf("set_metadata_respond\n");
#endif
decoder.set_metadata_respond(ds.Get<::FLAC__MetadataType>());
}
if ( ds.Get<bool>() ) {
const auto idVector = ds.GetData(0);
unsigned char id[4];
if ( idVector.size() >= sizeof(id) ) {
memcpy(id, idVector.data(), sizeof(id));
#ifdef FUZZER_DEBUG
printf("set_metadata_respond_application\n");
#endif
decoder.set_metadata_respond_application(id);
}
}
if ( ds.Get<bool>() ) {
#ifdef FUZZER_DEBUG
printf("set_metadata_respond_all\n");
#endif
decoder.set_metadata_respond_all();
}
if ( ds.Get<bool>() ) {
#ifdef FUZZER_DEBUG
printf("set_metadata_ignore\n");
#endif
decoder.set_metadata_ignore(ds.Get<::FLAC__MetadataType>());
}
if ( ds.Get<bool>() ) {
const auto idVector = ds.GetData(0);
unsigned char id[4];
if ( idVector.size() >= sizeof(id) ) {
memcpy(id, idVector.data(), sizeof(id));
#ifdef FUZZER_DEBUG
printf("set_metadata_ignore_application\n");
#endif
decoder.set_metadata_ignore_application(id);
}
}
if ( ds.Get<bool>() ) {
#ifdef FUZZER_DEBUG
printf("set_metadata_ignore_all\n");
#endif
decoder.set_metadata_ignore_all();
}
while ( ds.Get<bool>() ) {
switch ( ds.Get<uint8_t>() ) {
case 0:
{
#ifdef FUZZER_DEBUG
printf("flush\n");
#endif
const bool res = decoder.flush();
fuzzing::memory::memory_test(res);
}
break;
case 1:
{
#ifdef FUZZER_DEBUG
printf("reset\n");
#endif
const bool res = decoder.reset();
fuzzing::memory::memory_test(res);
}
break;
case 2:
{
#ifdef FUZZER_DEBUG
printf("process_single\n");
#endif
const bool res = decoder.process_single();
fuzzing::memory::memory_test(res);
}
break;
case 3:
{
#ifdef FUZZER_DEBUG
printf("process_until_end_of_metadata\n");
#endif
const bool res = decoder.process_until_end_of_metadata();
fuzzing::memory::memory_test(res);
}
break;
case 4:
{
#ifdef FUZZER_DEBUG
printf("process_until_end_of_stream\n");
#endif
const bool res = decoder.process_until_end_of_stream();
fuzzing::memory::memory_test(res);
}
break;
case 5:
{
#ifdef FUZZER_DEBUG
printf("skip_single_frame\n");
#endif
const bool res = decoder.skip_single_frame();
fuzzing::memory::memory_test(res);
}
break;
case 6:
{
#ifdef FUZZER_DEBUG
printf("seek_absolute\n");
#endif
const bool res = decoder.seek_absolute(ds.Get<uint64_t>());
fuzzing::memory::memory_test(res);
}
break;
case 7:
{
#ifdef FUZZER_DEBUG
printf("get_md5_checking\n");
#endif
const bool res = decoder.get_md5_checking();
fuzzing::memory::memory_test(res);
}
break;
case 8:
{
#ifdef FUZZER_DEBUG
printf("get_total_samples\n");
#endif
const bool res = decoder.get_total_samples();
fuzzing::memory::memory_test(res);
}
break;
case 9:
{
#ifdef FUZZER_DEBUG
printf("get_channels\n");
#endif
const bool res = decoder.get_channels();
fuzzing::memory::memory_test(res);
}
break;
case 10:
{
#ifdef FUZZER_DEBUG
printf("get_bits_per_sample\n");
#endif
const bool res = decoder.get_bits_per_sample();
fuzzing::memory::memory_test(res);
}
break;
case 11:
{
#ifdef FUZZER_DEBUG
printf("get_sample_rate\n");
#endif
const bool res = decoder.get_sample_rate();
fuzzing::memory::memory_test(res);
}
break;
case 12:
{
#ifdef FUZZER_DEBUG
printf("get_blocksize\n");
#endif
const bool res = decoder.get_blocksize();
fuzzing::memory::memory_test(res);
}
break;
}
}
} catch ( ... ) { }
end:
{
const bool res = decoder.finish();
fuzzing::memory::memory_test(res);
}
return 0;
}
|
