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tests/ossfuzz/fuzz_decode_stream.c
53 строки
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Lasse Collin
tests/ossfuzz: Tiny fix to a comment.
09 апр 2024, 18:22
09 апр 2024, 18:22
408b6ad
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// SPDX-License-Identifier: 0BSD /////////////////////////////////////////////////////////////////////////////// // /// \file fuzz_decode_stream.c /// \brief Fuzz test program for single threaded .xz decoding // // Authors: Lasse Collin // Maksym Vatsyk // /////////////////////////////////////////////////////////////////////////////// #include <inttypes.h> #include <stdlib.h> #include <stdio.h> #include "lzma.h" #include "fuzz_common.h" extern int LLVMFuzzerTestOneInput(const uint8_t *inbuf, size_t inbuf_size) { lzma_stream strm = LZMA_STREAM_INIT; // Initialize a .xz decoder using the memory usage limit // defined in fuzz_common.h // // Enable support for concatenated .xz files which is used when // decompressing regular .xz files (instead of data embedded inside // some other file format). Integrity checks on the uncompressed // data are ignored to make fuzzing more effective (incorrect check // values won't prevent the decoder from processing more input). // // The flag LZMA_IGNORE_CHECK doesn't disable verification of // header CRC32 values. Those checks are disabled when liblzma is // built with the #define FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION. lzma_ret ret = lzma_stream_decoder(&strm, MEM_LIMIT, LZMA_CONCATENATED | LZMA_IGNORE_CHECK); if (ret != LZMA_OK) { // This should never happen unless the system has // no free memory or address space to allow the small // allocations that the initialization requires. fprintf(stderr, "lzma_stream_decoder() failed (%d)\n", ret); abort(); } fuzz_code(&strm, inbuf, inbuf_size); // Free the allocated memory. lzma_end(&strm); return 0; }