1 /* 2 +----------------------------------------------------------------------+ 3 | Copyright (c) The PHP Group | 4 +----------------------------------------------------------------------+ 5 | This source file is subject to version 3.01 of the PHP license, | 6 | that is bundled with this package in the file LICENSE, and is | 7 | available through the world-wide-web at the following url: | 8 | https://www.php.net/license/3_01.txt | 9 | If you did not receive a copy of the PHP license and are unable to | 10 | obtain it through the world-wide-web, please send a note to | 11 | license@php.net so we can mail you a copy immediately. | 12 +----------------------------------------------------------------------+ 13 | Author: Rasmus Lerdorf <rasmus@php.net> | 14 +----------------------------------------------------------------------+ 15 */ 16 17 /* 18 * This code implements the AUTODIN II polynomial 19 * The variable corresponding to the macro argument "crc" should 20 * be an unsigned long. 21 * Original code by Spencer Garrett <srg@quick.com> 22 */ 23 24 #define CRC32(crc, ch) (crc = (crc >> 8) ^ crc32tab[(crc ^ (ch)) & 0xff]) 25 26 #define php_crc32_bulk_init() (0 ^ 0xffffffff) 27 #define php_crc32_bulk_end(c) ((c) ^ 0xffffffff) 28 29 PHPAPI uint32_t php_crc32_bulk_update(uint32_t crc, const char *p, size_t nr); 30 31 /* Return FAILURE if stream reading fail */ 32 PHPAPI int php_crc32_stream_bulk_update(uint32_t *crc, php_stream *fp, size_t nr); 33 34 /* generated using the AUTODIN II polynomial 35 * x^32 + x^26 + x^23 + x^22 + x^16 + 36 * x^12 + x^11 + x^10 + x^8 + x^7 + x^5 + x^4 + x^2 + x^1 + 1 37 */ 38 39 static const unsigned int crc32tab[256] = { 40 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 41 0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3, 42 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, 43 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 44 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, 45 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 46 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 47 0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5, 48 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, 49 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 50 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 51 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 52 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 53 0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f, 54 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, 55 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 56 0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a, 57 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433, 58 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 59 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01, 60 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 61 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 62 0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c, 63 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65, 64 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 65 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 66 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, 67 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 68 0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086, 69 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, 70 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 71 0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 72 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, 73 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 74 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, 75 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 76 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 77 0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7, 78 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, 79 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 80 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 81 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 82 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 83 0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79, 84 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, 85 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 86 0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 87 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d, 88 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 89 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713, 90 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 91 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 92 0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e, 93 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777, 94 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 95 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 96 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 97 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 98 0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0, 99 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, 100 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 101 0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf, 102 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, 103 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d, 104 }; 105
