diff options
Diffstat (limited to 'test/fuzz/example_flush_fuzzer.c')
| -rw-r--r-- | test/fuzz/example_flush_fuzzer.c | 159 |
1 files changed, 79 insertions, 80 deletions
diff --git a/test/fuzz/example_flush_fuzzer.c b/test/fuzz/example_flush_fuzzer.c index f9f2d36466..e53ceeca33 100644 --- a/test/fuzz/example_flush_fuzzer.c +++ b/test/fuzz/example_flush_fuzzer.c @@ -29,98 +29,97 @@ static free_func zfree = NULL; * Test deflate() with full flush */ void test_flush(unsigned char *compr, z_size_t *comprLen) { - PREFIX3(stream) c_stream; /* compression stream */ - int err; - unsigned int len = dataLen; - - c_stream.zalloc = zalloc; - c_stream.zfree = zfree; - c_stream.opaque = (void *)0; - - err = PREFIX(deflateInit)(&c_stream, Z_DEFAULT_COMPRESSION); - CHECK_ERR(err, "deflateInit"); - - c_stream.next_in = (const unsigned char *)data; - c_stream.next_out = compr; - c_stream.avail_in = 3; - c_stream.avail_out = (unsigned int)*comprLen; - err = PREFIX(deflate)(&c_stream, Z_FULL_FLUSH); - CHECK_ERR(err, "deflate flush 1"); - - compr[3]++; /* force an error in first compressed block */ - c_stream.avail_in = len - 3; - - err = PREFIX(deflate)(&c_stream, Z_FINISH); - if (err != Z_STREAM_END) { - CHECK_ERR(err, "deflate flush 2"); - } - err = PREFIX(deflateEnd)(&c_stream); - CHECK_ERR(err, "deflateEnd"); - - *comprLen = (z_size_t)c_stream.total_out; + PREFIX3(stream) c_stream; /* compression stream */ + int err; + unsigned int len = dataLen; + + c_stream.zalloc = zalloc; + c_stream.zfree = zfree; + c_stream.opaque = (void *)0; + + err = PREFIX(deflateInit)(&c_stream, Z_DEFAULT_COMPRESSION); + CHECK_ERR(err, "deflateInit"); + + c_stream.next_in = (const unsigned char *)data; + c_stream.next_out = compr; + c_stream.avail_in = 3; + c_stream.avail_out = (unsigned int)*comprLen; + err = PREFIX(deflate)(&c_stream, Z_FULL_FLUSH); + CHECK_ERR(err, "deflate flush 1"); + + compr[3]++; /* force an error in first compressed block */ + c_stream.avail_in = len - 3; + + err = PREFIX(deflate)(&c_stream, Z_FINISH); + if (err != Z_STREAM_END) { + CHECK_ERR(err, "deflate flush 2"); + } + err = PREFIX(deflateEnd)(&c_stream); + CHECK_ERR(err, "deflateEnd"); + + *comprLen = (z_size_t)c_stream.total_out; } /* =========================================================================== * Test inflateSync() */ -void test_sync(unsigned char *compr, size_t comprLen, unsigned char *uncompr, - size_t uncomprLen) { - int err; - PREFIX3(stream) d_stream; /* decompression stream */ - - d_stream.zalloc = zalloc; - d_stream.zfree = zfree; - d_stream.opaque = (void *)0; - - d_stream.next_in = compr; - d_stream.avail_in = 2; /* just read the zlib header */ - - err = PREFIX(inflateInit)(&d_stream); - CHECK_ERR(err, "inflateInit"); - - d_stream.next_out = uncompr; - d_stream.avail_out = (unsigned int)uncomprLen; - - err = PREFIX(inflate)(&d_stream, Z_NO_FLUSH); - CHECK_ERR(err, "inflate"); - - d_stream.avail_in = (unsigned int)comprLen - 2; /* read all compressed data */ - err = PREFIX(inflateSync)(&d_stream); /* but skip the damaged part */ - CHECK_ERR(err, "inflateSync"); - - err = PREFIX(inflate)(&d_stream, Z_FINISH); - if (err != Z_DATA_ERROR) { - fprintf(stderr, "inflate should report DATA_ERROR\n"); - /* Because of incorrect adler32 */ - exit(1); - } - err = PREFIX(inflateEnd)(&d_stream); - CHECK_ERR(err, "inflateEnd"); +void test_sync(unsigned char *compr, size_t comprLen, unsigned char *uncompr, size_t uncomprLen) { + int err; + PREFIX3(stream) d_stream; /* decompression stream */ + + d_stream.zalloc = zalloc; + d_stream.zfree = zfree; + d_stream.opaque = (void *)0; + + d_stream.next_in = compr; + d_stream.avail_in = 2; /* just read the zlib header */ + + err = PREFIX(inflateInit)(&d_stream); + CHECK_ERR(err, "inflateInit"); + + d_stream.next_out = uncompr; + d_stream.avail_out = (unsigned int)uncomprLen; + + err = PREFIX(inflate)(&d_stream, Z_NO_FLUSH); + CHECK_ERR(err, "inflate"); + + d_stream.avail_in = (unsigned int)comprLen - 2; /* read all compressed data */ + err = PREFIX(inflateSync)(&d_stream); /* but skip the damaged part */ + CHECK_ERR(err, "inflateSync"); + + err = PREFIX(inflate)(&d_stream, Z_FINISH); + if (err != Z_DATA_ERROR) { + fprintf(stderr, "inflate should report DATA_ERROR\n"); + /* Because of incorrect adler32 */ + exit(1); + } + err = PREFIX(inflateEnd)(&d_stream); + CHECK_ERR(err, "inflateEnd"); } int LLVMFuzzerTestOneInput(const uint8_t *d, size_t size) { - size_t comprLen = 100 + 2 * PREFIX(compressBound)(size); - size_t uncomprLen = size; - uint8_t *compr, *uncompr; + size_t comprLen = 100 + 2 * PREFIX(compressBound)(size); + size_t uncomprLen = size; + uint8_t *compr, *uncompr; - /* Discard inputs larger than 1Mb. */ - static size_t kMaxSize = 1024 * 1024; + /* Discard inputs larger than 1Mb. */ + static size_t kMaxSize = 1024 * 1024; - // This test requires at least 3 bytes of input data. - if (size <= 3 || size > kMaxSize) - return 0; + // This test requires at least 3 bytes of input data. + if (size <= 3 || size > kMaxSize) + return 0; - data = d; - dataLen = size; - compr = (uint8_t *)calloc(1, comprLen); - uncompr = (uint8_t *)calloc(1, uncomprLen); + data = d; + dataLen = size; + compr = (uint8_t *)calloc(1, comprLen); + uncompr = (uint8_t *)calloc(1, uncomprLen); - test_flush(compr, &comprLen); - test_sync(compr, comprLen, uncompr, uncomprLen); + test_flush(compr, &comprLen); + test_sync(compr, comprLen, uncompr, uncomprLen); - free(compr); - free(uncompr); + free(compr); + free(uncompr); - /* This function must return 0. */ - return 0; + /* This function must return 0. */ + return 0; } |