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- /*
- EQ2Emulator: Everquest II Server Emulator
- Copyright (C) 2007 EQ2EMulator Development Team (http://www.eq2emulator.net)
- This file is part of EQ2Emulator.
- EQ2Emulator is free software: you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation, either version 3 of the License, or
- (at your option) any later version.
- EQ2Emulator is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with EQ2Emulator. If not, see <http://www.gnu.org/licenses/>.
- */
- #include <stdio.h>
- unsigned long IntArray[]={
- 0x00000000,
- 0x77073096,
- 0xEE0E612C,
- 0x990951BA,
- 0x076DC419,
- 0x706AF48F,
- 0xE963A535,
- 0x9E6495A3,
- 0x0EDB8832,
- 0x79DCB8A4,
- 0xE0D5E91E,
- 0x97D2D988,
- 0x09B64C2B,
- 0x7EB17CBD,
- 0xE7B82D07,
- 0x90BF1D91,
- 0x1DB71064,
- 0x6AB020F2,
- 0xF3B97148,
- 0x84BE41DE,
- 0x1ADAD47D,
- 0x6DDDE4EB,
- 0xF4D4B551,
- 0x83D385C7,
- 0x136C9856,
- 0x646BA8C0,
- 0xFD62F97A,
- 0x8A65C9EC,
- 0x14015C4F,
- 0x63066CD9,
- 0xFA0F3D63,
- 0x8D080DF5,
- 0x3B6E20C8,
- 0x4C69105E,
- 0xD56041E4,
- 0xA2677172,
- 0x3C03E4D1,
- 0x4B04D447,
- 0xD20D85FD,
- 0xA50AB56B,
- 0x35B5A8FA,
- 0x42B2986C,
- 0xDBBBC9D6,
- 0xACBCF940,
- 0x32D86CE3,
- 0x45DF5C75,
- 0xDCD60DCF,
- 0xABD13D59,
- 0x26D930AC,
- 0x51DE003A,
- 0xC8D75180,
- 0xBFD06116,
- 0x21B4F4B5,
- 0x56B3C423,
- 0xCFBA9599,
- 0xB8BDA50F,
- 0x2802B89E,
- 0x5F058808,
- 0xC60CD9B2,
- 0xB10BE924,
- 0x2F6F7C87,
- 0x58684C11,
- 0xC1611DAB,
- 0xB6662D3D,
- 0x76DC4190,
- 0x01DB7106,
- 0x98D220BC,
- 0xEFD5102A,
- 0x71B18589,
- 0x06B6B51F,
- 0x9FBFE4A5,
- 0xE8B8D433,
- 0x7807C9A2,
- 0x0F00F934,
- 0x9609A88E,
- 0xE10E9818,
- 0x7F6A0DBB,
- 0x086D3D2D,
- 0x91646C97,
- 0xE6635C01,
- 0x6B6B51F4,
- 0x1C6C6162,
- 0x856530D8,
- 0xF262004E,
- 0x6C0695ED,
- 0x1B01A57B,
- 0x8208F4C1,
- 0xF50FC457,
- 0x65B0D9C6,
- 0x12B7E950,
- 0x8BBEB8EA,
- 0xFCB9887C,
- 0x62DD1DDF,
- 0x15DA2D49,
- 0x8CD37CF3,
- 0xFBD44C65,
- 0x4DB26158,
- 0x3AB551CE,
- 0xA3BC0074,
- 0xD4BB30E2,
- 0x4ADFA541,
- 0x3DD895D7,
- 0xA4D1C46D,
- 0xD3D6F4FB,
- 0x4369E96A,
- 0x346ED9FC,
- 0xAD678846,
- 0xDA60B8D0,
- 0x44042D73,
- 0x33031DE5,
- 0xAA0A4C5F,
- 0xDD0D7CC9,
- 0x5005713C,
- 0x270241AA,
- 0xBE0B1010,
- 0xC90C2086,
- 0x5768B525,
- 0x206F85B3,
- 0xB966D409,
- 0xCE61E49F,
- 0x5EDEF90E,
- 0x29D9C998,
- 0xB0D09822,
- 0xC7D7A8B4,
- 0x59B33D17,
- 0x2EB40D81,
- 0xB7BD5C3B,
- 0xC0BA6CAD,
- 0xEDB88320,
- 0x9ABFB3B6,
- 0x03B6E20C,
- 0x74B1D29A,
- 0xEAD54739,
- 0x9DD277AF,
- 0x04DB2615,
- 0x73DC1683,
- 0xE3630B12,
- 0x94643B84,
- 0x0D6D6A3E,
- 0x7A6A5AA8,
- 0xE40ECF0B,
- 0x9309FF9D,
- 0x0A00AE27,
- 0x7D079EB1,
- 0xF00F9344,
- 0x8708A3D2,
- 0x1E01F268,
- 0x6906C2FE,
- 0xF762575D,
- 0x806567CB,
- 0x196C3671,
- 0x6E6B06E7,
- 0xFED41B76,
- 0x89D32BE0,
- 0x10DA7A5A,
- 0x67DD4ACC,
- 0xF9B9DF6F,
- 0x8EBEEFF9,
- 0x17B7BE43,
- 0x60B08ED5,
- 0xD6D6A3E8,
- 0xA1D1937E,
- 0x38D8C2C4,
- 0x4FDFF252,
- 0xD1BB67F1,
- 0xA6BC5767,
- 0x3FB506DD,
- 0x48B2364B,
- 0xD80D2BDA,
- 0xAF0A1B4C,
- 0x36034AF6,
- 0x41047A60,
- 0xDF60EFC3,
- 0xA867DF55,
- 0x316E8EEF,
- 0x4669BE79,
- 0xCB61B38C,
- 0xBC66831A,
- 0x256FD2A0,
- 0x5268E236,
- 0xCC0C7795,
- 0xBB0B4703,
- 0x220216B9,
- 0x5505262F,
- 0xC5BA3BBE,
- 0xB2BD0B28,
- 0x2BB45A92,
- 0x5CB36A04,
- 0xC2D7FFA7,
- 0xB5D0CF31,
- 0x2CD99E8B,
- 0x5BDEAE1D,
- 0x9B64C2B0,
- 0xEC63F226,
- 0x756AA39C,
- 0x026D930A,
- 0x9C0906A9,
- 0xEB0E363F,
- 0x72076785,
- 0x05005713,
- 0x95BF4A82,
- 0xE2B87A14,
- 0x7BB12BAE,
- 0x0CB61B38,
- 0x92D28E9B,
- 0xE5D5BE0D,
- 0x7CDCEFB7,
- 0x0BDBDF21,
- 0x86D3D2D4,
- 0xF1D4E242,
- 0x68DDB3F8,
- 0x1FDA836E,
- 0x81BE16CD,
- 0xF6B9265B,
- 0x6FB077E1,
- 0x18B74777,
- 0x88085AE6,
- 0xFF0F6A70,
- 0x66063BCA,
- 0x11010B5C,
- 0x8F659EFF,
- 0xF862AE69,
- 0x616BFFD3,
- 0x166CCF45,
- 0xA00AE278,
- 0xD70DD2EE,
- 0x4E048354,
- 0x3903B3C2,
- 0xA7672661,
- 0xD06016F7,
- 0x4969474D,
- 0x3E6E77DB,
- 0xAED16A4A,
- 0xD9D65ADC,
- 0x40DF0B66,
- 0x37D83BF0,
- 0xA9BCAE53,
- 0xDEBB9EC5,
- 0x47B2CF7F,
- 0x30B5FFE9,
- 0xBDBDF21C,
- 0xCABAC28A,
- 0x53B39330,
- 0x24B4A3A6,
- 0xBAD03605,
- 0xCDD70693,
- 0x54DE5729,
- 0x23D967BF,
- 0xB3667A2E,
- 0xC4614AB8,
- 0x5D681B02,
- 0x2A6F2B94,
- 0xB40BBE37,
- 0xC30C8EA1,
- 0x5A05DF1B,
- 0x2D02EF8D,
- };
-
- unsigned long CRC16(const unsigned char *buf, int size, int key)
- {
- unsigned long ecx = key; //mov ecx, [esp+arg_8]
- unsigned long eax = ecx; //mov eax, ecx
- unsigned long edi;
- eax = ~ eax; //not eax
- eax&=0xFF; //and eax, 0FFh
- eax=IntArray[eax]; //mov eax, dword_0_10115D38[eax*4] IntArray
- eax ^= 0x00FFFFFF; //xor eax, 0FFFFFFh
- int edx = ecx; //mov edx, ecx
- edx = edx >> 8; //sar edx, 8
- edx = edx ^ eax; //xor edx, eax
- eax = eax >> 8; //sar eax, 8
- edx &= 0xFF; //and edx, 0FFh
- eax &= 0x00FFFFFF; //and eax, 0FFFFFFh
- eax ^= IntArray[edx]; //xor eax, dword_0_10115D38[edx*4]
- edx = ecx; //mov edx, ecx
- edx = edx >> 0x10; //sar edx, 10h
- edx ^= eax; //xor edx, eax
- eax = eax >> 8; //sar eax, 8
- edx &= 0xFF; //and edx, 0FFh
- int esi = IntArray[edx]; //mov esi, dword_0_10115D38[edx*4]
- edx = size; //mov edx, [esp+4+arg_4]
- eax &= 0x00FFFFFF; //and eax, 0FFFFFFh
- eax ^= esi; //xor eax, esi
- ecx = ecx >> 0x18; //sar ecx, 18h
- ecx ^= eax; //xor ecx, eax
- ecx &= 0xFF; //and ecx, 0FFh
- esi = IntArray[ecx]; //mov esi, dword_0_10115D38[ecx*4]
- ecx = (int)*buf; //mov ecx, [esp+4+arg_0]
- eax = eax >> 8; //sar eax, 8
- eax &= 0x00FFFFFF; //and eax, 0FFFFFFh
- eax ^= esi; //xor eax, esi
- for(int x = 0; x < size; x++)
- { //eax is the crc, ecx is the current part of the buffer
- int edx = 0; //xor edx, edx
- edx = buf[x] & 0x00FF; //mov dl, [ecx]
- edx ^= eax; //xor edx, eax
- eax = eax >> 8; //sar eax, 8
- edx &= 0xFF; //and edx, 0FFh
- edi = IntArray[edx]; //mov edi, dword_0_10115D38[edx*4]
- eax &= 0x00FFFFFF; //and eax, 0FFFFFFh
- eax ^= edi; //xor eax, edi
- }
- return ~eax;
- }
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