diff --git a/.gitignore b/.gitignore index 259148f..5f0fac8 100644 --- a/.gitignore +++ b/.gitignore @@ -1,3 +1,6 @@ +# Build directory +build/ + # Prerequisites *.d diff --git a/src/MultiuserFileSystem.cc b/src/MultiuserFileSystem.cc index 714a99f..122d9d0 100644 --- a/src/MultiuserFileSystem.cc +++ b/src/MultiuserFileSystem.cc @@ -127,6 +127,9 @@ MultiuserFileSystem::Config(XrdSysLogger *lp, const char *configfn) else if (!strcmp("crc32", val)) { m_digests |= ChecksumManager::CRC32; } + else if (!strcmp("crc32c", val)) { + m_digests |= ChecksumManager::CRC32C; + } else if (!strcmp("adler32", val)) { m_digests |= ChecksumManager::ADLER32; } diff --git a/src/XrdChecksum.cc b/src/XrdChecksum.cc index 6691393..e636824 100644 --- a/src/XrdChecksum.cc +++ b/src/XrdChecksum.cc @@ -45,6 +45,9 @@ ChecksumManager::Set(const char *lfn, const ChecksumState &state) if (state.Get(ChecksumManager::CRC32).size()) retval = this->Set(lfn, "CRC32", state.Get(ChecksumManager::CRC32).c_str()); + if (state.Get(ChecksumManager::CRC32C).size()) + retval = this->Set(lfn, "CRC32C", state.Get(ChecksumManager::CRC32C).c_str()); + if (state.Get(ChecksumManager::MD5).size()) retval = this->Set(lfn, "MD5", state.Get(ChecksumManager::MD5).c_str()); @@ -73,6 +76,10 @@ int ChecksumManager::Calc( const char *lfn, XrdCksData &Cks, int doSet) { return_digest = ChecksumManager::CKSUM; } + else if (!strncasecmp(Cks.Name, "crc32c", Cks.NameSize)) + { + return_digest = ChecksumManager::CRC32C; + } else if (!strncasecmp(Cks.Name, "crc32", Cks.NameSize)) { return_digest = ChecksumManager::CRC32; @@ -125,6 +132,9 @@ int ChecksumManager::Calc( const char *lfn, XrdCksData &Cks, int doSet) case ChecksumManager::CRC32: checksum_value = state.Get(ChecksumManager::CRC32); break; + case ChecksumManager::CRC32C: + checksum_value = state.Get(ChecksumManager::CRC32C); + break; case ChecksumManager::MD5: checksum_value = state.Get(ChecksumManager::MD5); break; diff --git a/src/XrdChecksum.hh b/src/XrdChecksum.hh index 147be22..fd1bf1a 100644 --- a/src/XrdChecksum.hh +++ b/src/XrdChecksum.hh @@ -41,6 +41,7 @@ private: const unsigned m_digests; uint32_t m_cksum; uint32_t m_crc32; + uint32_t m_crc32c; uint32_t m_adler32; unsigned m_md5_length; @@ -119,6 +120,7 @@ public: ADLER32 = 0x04, CVMFS = 0x08, CRC32 = 0x10, + CRC32C = 0x20, ALL = 0xff }; diff --git a/src/XrdChecksumCalc.cc b/src/XrdChecksumCalc.cc index 81dca43..5c0b799 100644 --- a/src/XrdChecksumCalc.cc +++ b/src/XrdChecksumCalc.cc @@ -77,6 +77,54 @@ static uint32_t const g_crctab[256] = }; +// CRC32C (Castagnoli) lookup table using polynomial 0x1EDC6F41 +static uint32_t const g_crc32c_tab[256] = +{ + 0x00000000, 0xf26b8303, 0xe13b70f7, 0x1350f3f4, 0xc79a971f, 0x35f1141c, + 0x26a1e7e8, 0xd4ca64eb, 0x8ad958cf, 0x78b2dbcc, 0x6be22838, 0x9989ab3b, + 0x4d43cfd0, 0xbf284cd3, 0xac78bf27, 0x5e133c24, 0x105ec76f, 0xe235446c, + 0xf165b798, 0x030e349b, 0xd7c45070, 0x25afd373, 0x36ff2087, 0xc494a384, + 0x9a879fa0, 0x68ec1ca3, 0x7bbcef57, 0x89d76c54, 0x5d1d08bf, 0xaf768bbc, + 0xbc267848, 0x4e4dfb4b, 0x20bd8ede, 0xd2d60ddd, 0xc186fe29, 0x33ed7d2a, + 0xe72719c1, 0x154c9ac2, 0x061c6936, 0xf477ea35, 0xaa64d611, 0x580f5512, + 0x4b5fa6e6, 0xb93425e5, 0x6dfe410e, 0x9f95c20d, 0x8cc531f9, 0x7eaeb2fa, + 0x30e349b1, 0xc288cab2, 0xd1d83946, 0x23b3ba45, 0xf779deae, 0x05125dad, + 0x1642ae59, 0xe4292d5a, 0xba3a117e, 0x4851927d, 0x5b016189, 0xa96ae28a, + 0x7da08661, 0x8fcb0562, 0x9c9bf696, 0x6ef07595, 0x417b1dbc, 0xb3109ebf, + 0xa0406d4b, 0x522bee48, 0x86e18aa3, 0x748a09a0, 0x67dafa54, 0x95b17957, + 0xcba24573, 0x39c9c670, 0x2a993584, 0xd8f2b687, 0x0c38d26c, 0xfe53516f, + 0xed03a29b, 0x1f682198, 0x5125dad3, 0xa34e59d0, 0xb01eaa24, 0x42752927, + 0x96bf4dcc, 0x64d4cecf, 0x77843d3b, 0x85efbe38, 0xdbfc821c, 0x2997011f, + 0x3ac7f2eb, 0xc8ac71e8, 0x1c661503, 0xee0d9600, 0xfd5d65f4, 0x0f36e6f7, + 0x61c69362, 0x93ad1061, 0x80fde395, 0x72966096, 0xa65c047d, 0x5437877e, + 0x4767748a, 0xb50cf789, 0xeb1fcbad, 0x197448ae, 0x0a24bb5a, 0xf84f3859, + 0x2c855cb2, 0xdeeedfb1, 0xcdbe2c45, 0x3fd5af46, 0x7198540d, 0x83f3d70e, + 0x90a324fa, 0x62c8a7f9, 0xb602c312, 0x44694011, 0x5739b3e5, 0xa55230e6, + 0xfb410cc2, 0x092a8fc1, 0x1a7a7c35, 0xe811ff36, 0x3cdb9bdd, 0xceb018de, + 0xdde0eb2a, 0x2f8b6829, 0x82f63b78, 0x709db87b, 0x63cd4b8f, 0x91a6c88c, + 0x456cac67, 0xb7072f64, 0xa457dc90, 0x563c5f93, 0x082f63b7, 0xfa44e0b4, + 0xe9141340, 0x1b7f9043, 0xcfb5f4a8, 0x3dde77ab, 0x2e8e845f, 0xdce5075c, + 0x92a8fc17, 0x60c37f14, 0x73938ce0, 0x81f80fe3, 0x55326b08, 0xa759e80b, + 0xb4091bff, 0x466298fc, 0x1871a4d8, 0xea1a27db, 0xf94ad42f, 0x0b21572c, + 0xdfeb33c7, 0x2d80b0c4, 0x3ed04330, 0xccbbc033, 0xa24bb5a6, 0x502036a5, + 0x4370c551, 0xb11b4652, 0x65d122b9, 0x97baa1ba, 0x84ea524e, 0x7681d14d, + 0x2892ed69, 0xdaf96e6a, 0xc9a99d9e, 0x3bc21e9d, 0xef087a76, 0x1d63f975, + 0x0e330a81, 0xfc588982, 0xb21572c9, 0x407ef1ca, 0x532e023e, 0xa145813d, + 0x758fe5d6, 0x87e466d5, 0x94b49521, 0x66df1622, 0x38cc2a06, 0xcaa7a905, + 0xd9f75af1, 0x2b9cd9f2, 0xff56bd19, 0x0d3d3e1a, 0x1e6dcdee, 0xec064eed, + 0xc38d26c4, 0x31e6a5c7, 0x22b65633, 0xd0ddd530, 0x0417b1db, 0xf67c32d8, + 0xe52cc12c, 0x1747422f, 0x49547e0b, 0xbb3ffd08, 0xa86f0efc, 0x5a048dff, + 0x8ecee914, 0x7ca56a17, 0x6ff599e3, 0x9d9e1ae0, 0xd3d3e1ab, 0x21b862a8, + 0x32e8915c, 0xc083125f, 0x144976b4, 0xe622f5b7, 0xf5720643, 0x07198540, + 0x590ab964, 0xab613a67, 0xb831c993, 0x4a5a4a90, 0x9e902e7b, 0x6cfbad78, + 0x7fab5e8c, 0x8dc0dd8f, 0xe330a81a, 0x115b2b19, 0x020bd8ed, 0xf0605bee, + 0x24aa3f05, 0xd6c1bc06, 0xc5914ff2, 0x37faccf1, 0x69e9f0d5, 0x9b8273d6, + 0x88d28022, 0x7ab90321, 0xae7367ca, 0x5c18e4c9, 0x4f48173d, 0xbd23943e, + 0xf36e6f75, 0x0105ec76, 0x12551f82, 0xe03e9c81, 0x34f4f86a, 0xc69f7b69, + 0xd5cf889d, 0x27a40b9e, 0x79b737ba, 0x8bdcb4b9, 0x988c474d, 0x6ae7c44e, + 0xbe2da0a5, 0x4c4623a6, 0x5f16d052, 0xad7d5351 +}; + static std::string human_readable_evp(const unsigned char *evp, size_t length) { @@ -96,6 +144,7 @@ ChecksumState::ChecksumState(unsigned digests) : m_digests(digests), m_cksum(0), m_crc32(crc32(0, NULL, 0)), + m_crc32c(0xFFFFFFFF), m_adler32(adler32(0, NULL, 0)), m_md5_length(0), m_cur_chunk_bytes(0), @@ -150,6 +199,11 @@ ChecksumState::Get(unsigned digest) const uint32_t crc32_no = htonl(m_crc32); return human_readable_evp(reinterpret_cast(&crc32_no), sizeof(crc32_no)); } + if ((digest & ChecksumManager::CRC32C) && (m_digests & ChecksumManager::CRC32C)) + { + uint32_t crc32c_no = htonl(m_crc32c); + return human_readable_evp(reinterpret_cast(&crc32c_no), sizeof(crc32c_no)); + } if ((digest & ChecksumManager::ADLER32) && (m_digests & ChecksumManager::ADLER32)) { uint32_t adler32_no = htonl(m_adler32); @@ -189,6 +243,16 @@ ChecksumState::Update(const unsigned char *buffer, size_t bsize) { m_crc32 = crc32(m_crc32, buffer, bsize); } + if (m_digests & ChecksumManager::CRC32C) + { + const unsigned char *current_buffer = buffer; + size_t bytes_remaining = bsize; + uint32_t crc = m_crc32c; + while (bytes_remaining--) { + crc = (crc >> 8) ^ g_crc32c_tab[(crc ^ *current_buffer++) & 0xFF]; + } + m_crc32c = crc; + } if (m_digests & ChecksumManager::MD5) { EVP_DigestUpdate(m_md5, buffer, bsize); @@ -244,6 +308,10 @@ ChecksumState::Finalize() } m_cksum = ~crc; } + if (m_digests & ChecksumManager::CRC32C) + { + m_crc32c ^= 0xFFFFFFFF; + } if (m_digests & ChecksumManager::CVMFS) { unsigned char sha1_value[EVP_MAX_MD_SIZE];