使用LibLZMA解压Apache Commons Compression生成的XZ文件遇LZMA_BUF_ERROR
问题:LibLZMA解压Apache Commons Compression生成的XZ文件触发LZMA_BUF_ERROR
我正在使用LibLZMA(即xz-utils)解压由apache-commons-compression库生成的二进制文件,已确认Java程序输出的是标准XZ二进制文件,且7zip识别其格式为lzma2:23 crc64。
我的解压函数如下:
void decompress_content(const uint8_t *compressed_data, int compressed_length) { lzma_stream strm = LZMA_STREAM_INIT; lzma_ret ret = lzma_stream_decoder(&strm, UINT32_MAX, LZMA_CONCATENATED); if (ret != LZMA_OK) throw std::runtime_error("Failed to initialize XZ decoder."); std::vector<uint8_t> decompressed_data; uint8_t outbuf[65536]; strm.next_in = compressed_data; strm.avail_in = compressed_length; strm.next_out = outbuf; strm.avail_out = sizeof(outbuf); try { while (true) { ret = lzma_code(&strm, LZMA_RUN); // Check if output data was produced if (strm.avail_out < sizeof(outbuf)) { size_t write_size = sizeof(outbuf) - strm.avail_out; decompressed_data.insert(decompressed_data.end(), outbuf, outbuf + write_size); strm.next_out = outbuf; strm.avail_out = sizeof(outbuf); } if (ret == LZMA_STREAM_END) { break; } if (ret == LZMA_OK) { continue; } if (ret == LZMA_BUF_ERROR && strm.avail_in == 0) { // No more input data, and decoder cannot make progress lzma_end(&strm); throw std::runtime_error("Compressed data is truncated or corrupted."); } // Other errors lzma_end(&strm); handle_lzma_error(ret); } } catch (...) { lzma_end(&strm); throw; } lzma_end(&strm); parse_entries(decompressed_data); }
执行该函数时触发错误:Compressed data is truncated or corrupted.,对应返回码LZMA_BUF_ERROR。
相关XZ二进制数据如下:
unsigned char rawData[80] = { 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x04, 0xE6, 0xD6, 0xB4, 0x46, 0x02, 0x00, 0x21, 0x01, 0x16, 0x00, 0x00, 0x00, 0x74, 0x2F, 0xE5, 0xA3, 0x01, 0x00, 0x17, 0x68, 0x65, 0x6C, 0x6C, 0x6F, 0x5F, 0x77, 0x6F, 0x72, 0x6C, 0x64, 0x2E, 0x74, 0x78, 0x74, 0x00, 0x00, 0x00, 0x00, 0x04, 0x74, 0x65, 0x73, 0x74, 0x00, 0x78, 0x83, 0x76, 0x08, 0x82, 0x49, 0x3C, 0x9C, 0x00, 0x01, 0x30, 0x18, 0x8E, 0x1B, 0xAC, 0xEC, 0x1F, 0xB6, 0xF3, 0x7D, 0x01, 0x00, 0x00, 0x00, 0x00, 0x04, 0x59, 0x5A };
内容的提问来源于stack exchange,提问作者Rabbit0w0
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