Erik de Castro Lopo | e0f7e0e | 2019-11-17 16:15:51 +1100 | [diff] [blame] | 1 | #include <cstddef> |
| 2 | #include <cstdint> |
| 3 | |
| 4 | #include <fuzzing/datasource/datasource.hpp> |
| 5 | #include <fuzzing/memory.hpp> |
| 6 | |
| 7 | #include "FLAC++/decoder.h" |
| 8 | |
| 9 | template <> FLAC__MetadataType fuzzing::datasource::Base::Get<FLAC__MetadataType>(const uint64_t id) { |
| 10 | (void)id; |
| 11 | switch ( Get<uint8_t>() ) { |
| 12 | case 0: |
| 13 | return FLAC__METADATA_TYPE_STREAMINFO; |
| 14 | case 1: |
| 15 | return FLAC__METADATA_TYPE_PADDING; |
| 16 | case 2: |
| 17 | return FLAC__METADATA_TYPE_APPLICATION; |
| 18 | case 3: |
| 19 | return FLAC__METADATA_TYPE_SEEKTABLE; |
| 20 | case 4: |
| 21 | return FLAC__METADATA_TYPE_VORBIS_COMMENT; |
| 22 | case 5: |
| 23 | return FLAC__METADATA_TYPE_CUESHEET; |
| 24 | case 6: |
| 25 | return FLAC__METADATA_TYPE_PICTURE; |
| 26 | case 7: |
| 27 | return FLAC__METADATA_TYPE_UNDEFINED; |
| 28 | case 8: |
| 29 | return FLAC__MAX_METADATA_TYPE; |
| 30 | default: |
| 31 | return FLAC__METADATA_TYPE_STREAMINFO; |
| 32 | } |
| 33 | } |
| 34 | |
| 35 | namespace FLAC { |
| 36 | namespace Decoder { |
| 37 | class FuzzerStream : public Stream { |
| 38 | private: |
| 39 | fuzzing::datasource::Datasource& ds; |
| 40 | public: |
| 41 | FuzzerStream(fuzzing::datasource::Datasource& dsrc) : |
| 42 | Stream(), ds(dsrc) { } |
| 43 | |
| 44 | ::FLAC__StreamDecoderReadStatus read_callback(FLAC__byte buffer[], size_t *bytes) override { |
| 45 | try { |
| 46 | const size_t maxCopySize = *bytes; |
| 47 | |
| 48 | if ( maxCopySize > 0 ) { |
| 49 | /* memset just to test if this overwrites anything, and triggers ASAN */ |
| 50 | memset(buffer, 0, maxCopySize); |
| 51 | } |
| 52 | |
| 53 | const auto data = ds.GetData(0); |
| 54 | const auto dataSize = data.size(); |
| 55 | const auto copySize = std::min(maxCopySize, dataSize); |
| 56 | |
| 57 | if ( copySize > 0 ) { |
| 58 | memcpy(buffer, data.data(), copySize); |
| 59 | } |
| 60 | |
| 61 | *bytes = copySize; |
| 62 | |
| 63 | return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE; |
| 64 | } catch ( ... ) { |
| 65 | return FLAC__STREAM_DECODER_READ_STATUS_ABORT; |
| 66 | } |
| 67 | } |
| 68 | |
| 69 | ::FLAC__StreamDecoderWriteStatus write_callback(const ::FLAC__Frame *frame, const FLAC__int32 * const buffer[]) override { |
| 70 | { |
| 71 | fuzzing::memory::memory_test(&(frame->header), sizeof(frame->header)); |
| 72 | fuzzing::memory::memory_test(&(frame->footer), sizeof(frame->footer)); |
| 73 | } |
| 74 | |
| 75 | { |
| 76 | const auto numChannels = get_channels(); |
| 77 | const size_t bytesPerChannel = frame->header.blocksize * sizeof(FLAC__int32); |
| 78 | for (size_t i = 0; i < numChannels; i++) { |
| 79 | fuzzing::memory::memory_test(buffer[i], bytesPerChannel); |
| 80 | } |
| 81 | } |
| 82 | |
| 83 | try { |
| 84 | if ( ds.Get<bool>() == true ) { |
| 85 | return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT; |
| 86 | } |
| 87 | } catch ( ... ) { } |
| 88 | return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE; |
| 89 | } |
| 90 | |
| 91 | void error_callback(::FLAC__StreamDecoderErrorStatus status) override { |
| 92 | fuzzing::memory::memory_test(status); |
| 93 | } |
| 94 | |
| 95 | void metadata_callback(const ::FLAC__StreamMetadata *metadata) override { |
| 96 | fuzzing::memory::memory_test(metadata->type); |
| 97 | fuzzing::memory::memory_test(metadata->is_last); |
| 98 | fuzzing::memory::memory_test(metadata->length); |
| 99 | fuzzing::memory::memory_test(metadata->data); |
| 100 | } |
| 101 | |
| 102 | ::FLAC__StreamDecoderSeekStatus seek_callback(FLAC__uint64 absolute_byte_offset) override { |
| 103 | fuzzing::memory::memory_test(absolute_byte_offset); |
| 104 | |
| 105 | try { |
| 106 | if ( ds.Get<bool>() == true ) { |
| 107 | return FLAC__STREAM_DECODER_SEEK_STATUS_OK; |
| 108 | } else { |
| 109 | return FLAC__STREAM_DECODER_SEEK_STATUS_ERROR; |
| 110 | } |
| 111 | } catch ( ... ) { |
| 112 | return FLAC__STREAM_DECODER_SEEK_STATUS_OK; |
| 113 | } |
| 114 | } |
| 115 | #if 0 |
| 116 | ::FLAC__StreamDecoderTellStatus tell_callback(FLAC__uint64 *absolute_byte_offset) override { |
| 117 | fuzzing::memory::memory_test(*absolute_byte_offset); |
| 118 | |
| 119 | try { |
| 120 | if ( ds.Get<bool>() == true ) { |
| 121 | return FLAC__STREAM_DECODER_TELL_STATUS_OK; |
| 122 | } else { |
| 123 | return FLAC__STREAM_DECODER_TELL_STATUS_ERROR; |
| 124 | } |
| 125 | } catch ( ... ) { |
| 126 | return FLAC__STREAM_DECODER_TELL_STATUS_OK; |
| 127 | } |
| 128 | } |
| 129 | |
| 130 | ::FLAC__StreamDecoderLengthStatus length_callback(FLAC__uint64 *stream_length) override { |
| 131 | fuzzing::memory::memory_test(*stream_length); |
| 132 | |
| 133 | try { |
| 134 | if ( ds.Get<bool>() == true ) { |
| 135 | return FLAC__STREAM_DECODER_LENGTH_STATUS_OK; |
| 136 | } else { |
| 137 | return FLAC__STREAM_DECODER_LENGTH_STATUS_ERROR; |
| 138 | } |
| 139 | } catch ( ... ) { |
| 140 | return FLAC__STREAM_DECODER_LENGTH_STATUS_OK; |
| 141 | } |
| 142 | } |
| 143 | #endif |
| 144 | }; |
| 145 | } |
| 146 | } |
| 147 | |
| 148 | extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) { |
| 149 | fuzzing::datasource::Datasource ds(data, size); |
| 150 | FLAC::Decoder::FuzzerStream decoder(ds); |
| 151 | |
| 152 | try { |
| 153 | { |
| 154 | ::FLAC__StreamDecoderInitStatus ret; |
| 155 | |
| 156 | if ( ds.Get<bool>() ) { |
| 157 | ret = decoder.init(); |
| 158 | } else { |
| 159 | ret = decoder.init_ogg(); |
| 160 | } |
| 161 | |
| 162 | if ( ret != FLAC__STREAM_DECODER_INIT_STATUS_OK ) { |
| 163 | goto end; |
| 164 | } |
| 165 | } |
| 166 | |
| 167 | if ( ds.Get<bool>() ) { |
| 168 | #ifdef FUZZER_DEBUG |
| 169 | printf("set_ogg_serial_number\n"); |
| 170 | #endif |
| 171 | decoder.set_ogg_serial_number(ds.Get<long>()); |
| 172 | } |
| 173 | if ( ds.Get<bool>() ) { |
| 174 | #ifdef FUZZER_DEBUG |
| 175 | printf("set_md5_checking\n"); |
| 176 | #endif |
| 177 | decoder.set_md5_checking(ds.Get<bool>()); |
| 178 | } |
| 179 | if ( ds.Get<bool>() ) { |
| 180 | #ifdef FUZZER_DEBUG |
| 181 | printf("set_metadata_respond\n"); |
| 182 | #endif |
| 183 | decoder.set_metadata_respond(ds.Get<::FLAC__MetadataType>()); |
| 184 | } |
| 185 | if ( ds.Get<bool>() ) { |
| 186 | const auto idVector = ds.GetData(0); |
| 187 | unsigned char id[4]; |
| 188 | if ( idVector.size() >= sizeof(id) ) { |
| 189 | memcpy(id, idVector.data(), sizeof(id)); |
| 190 | #ifdef FUZZER_DEBUG |
| 191 | printf("set_metadata_respond_application\n"); |
| 192 | #endif |
| 193 | decoder.set_metadata_respond_application(id); |
| 194 | } |
| 195 | } |
| 196 | if ( ds.Get<bool>() ) { |
| 197 | #ifdef FUZZER_DEBUG |
| 198 | printf("set_metadata_respond_all\n"); |
| 199 | #endif |
| 200 | decoder.set_metadata_respond_all(); |
| 201 | } |
| 202 | if ( ds.Get<bool>() ) { |
| 203 | #ifdef FUZZER_DEBUG |
| 204 | printf("set_metadata_ignore\n"); |
| 205 | #endif |
| 206 | decoder.set_metadata_ignore(ds.Get<::FLAC__MetadataType>()); |
| 207 | } |
| 208 | if ( ds.Get<bool>() ) { |
| 209 | const auto idVector = ds.GetData(0); |
| 210 | unsigned char id[4]; |
| 211 | if ( idVector.size() >= sizeof(id) ) { |
| 212 | memcpy(id, idVector.data(), sizeof(id)); |
| 213 | #ifdef FUZZER_DEBUG |
| 214 | printf("set_metadata_ignore_application\n"); |
| 215 | #endif |
| 216 | decoder.set_metadata_ignore_application(id); |
| 217 | } |
| 218 | } |
| 219 | if ( ds.Get<bool>() ) { |
| 220 | #ifdef FUZZER_DEBUG |
| 221 | printf("set_metadata_ignore_all\n"); |
| 222 | #endif |
| 223 | decoder.set_metadata_ignore_all(); |
| 224 | } |
| 225 | |
| 226 | while ( ds.Get<bool>() ) { |
| 227 | switch ( ds.Get<uint8_t>() ) { |
| 228 | case 0: |
| 229 | { |
| 230 | #ifdef FUZZER_DEBUG |
| 231 | printf("flush\n"); |
| 232 | #endif |
| 233 | const bool res = decoder.flush(); |
| 234 | fuzzing::memory::memory_test(res); |
| 235 | } |
| 236 | break; |
| 237 | case 1: |
| 238 | { |
| 239 | #ifdef FUZZER_DEBUG |
| 240 | printf("reset\n"); |
| 241 | #endif |
| 242 | const bool res = decoder.reset(); |
| 243 | fuzzing::memory::memory_test(res); |
| 244 | } |
| 245 | break; |
| 246 | case 2: |
| 247 | { |
| 248 | #ifdef FUZZER_DEBUG |
| 249 | printf("process_single\n"); |
| 250 | #endif |
| 251 | const bool res = decoder.process_single(); |
| 252 | fuzzing::memory::memory_test(res); |
| 253 | } |
| 254 | break; |
| 255 | case 3: |
| 256 | { |
| 257 | #ifdef FUZZER_DEBUG |
| 258 | printf("process_until_end_of_metadata\n"); |
| 259 | #endif |
| 260 | const bool res = decoder.process_until_end_of_metadata(); |
| 261 | fuzzing::memory::memory_test(res); |
| 262 | } |
| 263 | break; |
| 264 | case 4: |
| 265 | { |
| 266 | #ifdef FUZZER_DEBUG |
| 267 | printf("process_until_end_of_stream\n"); |
| 268 | #endif |
| 269 | const bool res = decoder.process_until_end_of_stream(); |
| 270 | fuzzing::memory::memory_test(res); |
| 271 | } |
| 272 | break; |
| 273 | case 5: |
| 274 | { |
| 275 | #ifdef FUZZER_DEBUG |
| 276 | printf("skip_single_frame\n"); |
| 277 | #endif |
| 278 | const bool res = decoder.skip_single_frame(); |
| 279 | fuzzing::memory::memory_test(res); |
| 280 | } |
| 281 | break; |
| 282 | case 6: |
| 283 | { |
| 284 | #ifdef FUZZER_DEBUG |
| 285 | printf("seek_absolute\n"); |
| 286 | #endif |
| 287 | const bool res = decoder.seek_absolute(ds.Get<uint64_t>()); |
| 288 | fuzzing::memory::memory_test(res); |
| 289 | } |
| 290 | break; |
| 291 | case 7: |
| 292 | { |
| 293 | #ifdef FUZZER_DEBUG |
| 294 | printf("get_md5_checking\n"); |
| 295 | #endif |
| 296 | const bool res = decoder.get_md5_checking(); |
| 297 | fuzzing::memory::memory_test(res); |
| 298 | } |
| 299 | break; |
| 300 | case 8: |
| 301 | { |
| 302 | #ifdef FUZZER_DEBUG |
| 303 | printf("get_total_samples\n"); |
| 304 | #endif |
| 305 | const bool res = decoder.get_total_samples(); |
| 306 | fuzzing::memory::memory_test(res); |
| 307 | } |
| 308 | break; |
| 309 | case 9: |
| 310 | { |
| 311 | #ifdef FUZZER_DEBUG |
| 312 | printf("get_channels\n"); |
| 313 | #endif |
| 314 | const bool res = decoder.get_channels(); |
| 315 | fuzzing::memory::memory_test(res); |
| 316 | } |
| 317 | break; |
| 318 | case 10: |
| 319 | { |
| 320 | #ifdef FUZZER_DEBUG |
| 321 | printf("get_bits_per_sample\n"); |
| 322 | #endif |
| 323 | const bool res = decoder.get_bits_per_sample(); |
| 324 | fuzzing::memory::memory_test(res); |
| 325 | } |
| 326 | break; |
| 327 | case 11: |
| 328 | { |
| 329 | #ifdef FUZZER_DEBUG |
| 330 | printf("get_sample_rate\n"); |
| 331 | #endif |
| 332 | const bool res = decoder.get_sample_rate(); |
| 333 | fuzzing::memory::memory_test(res); |
| 334 | } |
| 335 | break; |
| 336 | case 12: |
| 337 | { |
| 338 | #ifdef FUZZER_DEBUG |
| 339 | printf("get_blocksize\n"); |
| 340 | #endif |
| 341 | const bool res = decoder.get_blocksize(); |
| 342 | fuzzing::memory::memory_test(res); |
| 343 | } |
| 344 | break; |
| 345 | } |
| 346 | } |
| 347 | } catch ( ... ) { } |
| 348 | |
| 349 | end: |
| 350 | { |
| 351 | const bool res = decoder.finish(); |
| 352 | fuzzing::memory::memory_test(res); |
| 353 | } |
| 354 | return 0; |
| 355 | } |