/* * This file is part of the aMule project. * * Copyright (c) 2003-2011 aMule Team ( admin@amule.org / http://www.amule.org ) * * This program 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 2 of the License, or (at your option) any later version. * * This program 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 this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA */ /* * This program generates an md5sum from a C/C++ source file. * Basic preprocessing is applied to the source (comment removal, * whitespace normalization), so only real code change will result * in md5sum change. * * Preprocessor code is written by Dévai Tamás (gonosztopi@amule.org) * md5 code is taken from src/MD5Sum.cpp * * Usage: the program takes input from stdin and places output to stdout. * This behaviour cannot be altered. */ #include #include typedef unsigned char *POINTER; typedef uint16_t UINT2; typedef uint32_t UINT4; typedef struct { UINT4 state[4]; UINT4 count[2]; unsigned char buffer[64]; } MD5_CTX; void MD5Init(MD5_CTX *); void MD5Update(MD5_CTX *, const unsigned char *, unsigned int); void MD5Final(unsigned char [16], MD5_CTX *); const int table[][9] = { { 0x0206, 0x0206, 0x0008, 0x0100, 0x0101, 0x0102, 0x000e, 0x0100, 0x00ff }, { 0x0101, 0x0101, 0x0101, 0x0101, 0x0100, 0x0101, 0x010b, 0x0101, 0x00ff }, { 0x0102, 0x0102, 0x0102, 0x0102, 0x0102, 0x0100, 0x010c, 0x0102, 0x00ff }, { 0x0003, 0x0003, 0x0003, 0x0009, 0x0003, 0x0003, 0x0003, 0x0003, 0x00ff }, { 0x0006, 0x0004, 0x0004, 0x0004, 0x0004, 0x0004, 0x0004, 0x0004, 0x00ff }, { 0x0206, 0x0005, 0x0005, 0x0005, 0x0005, 0x0005, 0x0005, 0x0005, 0x00ff }, { 0x0006, 0x0006, 0x0007, 0x0100, 0x0101, 0x0102, 0x000d, 0x0100, 0x00ff }, { 0x0606, 0x0606, 0x0004, 0x000f, 0x0401, 0x0402, 0x050a, 0x0400, 0x04ff }, { 0x0606, 0x0606, 0x0005, 0x0003, 0x0401, 0x0402, 0x050a, 0x0400, 0x04ff }, { 0x0003, 0x0003, 0x0000, 0x0003, 0x0003, 0x0003, 0x0003, 0x0003, 0x00ff }, { 0x0100, 0x0100, 0x0100, 0x0100, 0x0100, 0x0100, 0x0100, 0x0100, 0x00ff }, { 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x00ff }, { 0x0102, 0x0102, 0x0102, 0x0102, 0x0102, 0x0102, 0x0102, 0x0102, 0x00ff }, { 0x0006, 0x0800, 0x0800, 0x0800, 0x0800, 0x0800, 0x0800, 0x0800, 0x00ff }, { 0x0206, 0x0800, 0x0800, 0x0800, 0x0800, 0x0800, 0x0800, 0x0800, 0x00ff }, { 0x000f, 0x000f, 0x000f, 0x0010, 0x000f, 0x000f, 0x000f, 0x000f, 0x00ff }, { 0x000f, 0x000f, 0x0006, 0x000f, 0x000f, 0x000f, 0x000f, 0x000f, 0x00ff } }; int GetCharCode(int c) { if (c == '\r' || c == '\n') return 0; if (c == ' ' || c == '\t') return 1; if (c == '/') return 2; if (c == '*') return 3; if (c == '\"') return 4; if (c == '\'') return 5; if (c == '\\') return 6; if (c == EOF) return 8; return 7; } int main() { int c; int state = 0; MD5_CTX context; unsigned char digest[16]; unsigned char buffer[1024]; int count = 0; MD5Init(&context); while (state != 0x00ff) { c = getchar(); state = table[state][GetCharCode(c)]; if (state & 0x0800) { buffer[count++] = '\\'; } if (state & 0x0400) { buffer[count++] = '/'; } if (state & 0x0200) { buffer[count++] = ' '; } if (state & 0x0100) { buffer[count++] = c; } state &= 0x00ff; if (count > 1020) { MD5Update(&context, buffer, count); count = 0; } } MD5Update(&context, buffer, count); MD5Final(digest, &context); for (count = 0; count < 16; count++) printf("%02x", digest[count]); putchar('\n'); return 0; } #define S11 7 #define S12 12 #define S13 17 #define S14 22 #define S21 5 #define S22 9 #define S23 14 #define S24 20 #define S31 4 #define S32 11 #define S33 16 #define S34 23 #define S41 6 #define S42 10 #define S43 15 #define S44 21 static void MD5Transform (UINT4 [4], const unsigned char [64]); static void Encode (unsigned char *, UINT4 *, unsigned int); static void Decode (UINT4 *, const unsigned char *, unsigned int); static void MD5_memcpy (POINTER, POINTER, unsigned int); static void MD5_memset (POINTER, int, unsigned int); static unsigned char PADDING[64] = { 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; /* F, G, H and I are basic MD5 functions. */ #define F(x, y, z) (((x) & (y)) | ((~x) & (z))) #define G(x, y, z) (((x) & (z)) | ((y) & (~z))) #define H(x, y, z) ((x) ^ (y) ^ (z)) #define I(x, y, z) ((y) ^ ((x) | (~z))) /* ROTATE_LEFT rotates x left n bits. 15-April-2003 Sony: use MSVC intrinsic to save some cycles */ #ifdef _MSC_VER #pragma intrinsic(_rotl) #define ROTATE_LEFT(x, n) _rotl((x), (n)) #else #define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n)))) #endif /* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4. Rotation is separate from addition to prevent recomputation. */ /* Defines must be on one line to work with GCC-2.95.3 */ #define FF(a, b, c, d, x, s, ac) { (a) += F ((b), (c), (d)) + (x) + (UINT4)(ac); (a) = ROTATE_LEFT ((a), (s)); (a) += (b); } #define GG(a, b, c, d, x, s, ac) { (a) += G ((b), (c), (d)) + (x) + (UINT4)(ac); (a) = ROTATE_LEFT ((a), (s)); (a) += (b); } #define HH(a, b, c, d, x, s, ac) { (a) += H ((b), (c), (d)) + (x) + (UINT4)(ac); (a) = ROTATE_LEFT ((a), (s)); (a) += (b); } #define II(a, b, c, d, x, s, ac) { (a) += I ((b), (c), (d)) + (x) + (UINT4)(ac); (a) = ROTATE_LEFT ((a), (s)); (a) += (b); } /* MD5 initialization. Begins an MD5 operation, writing a new context. */ void MD5Init (MD5_CTX *context) { context->count[0] = context->count[1] = 0; /* Load magic initialization constants. */ context->state[0] = 0x67452301; context->state[1] = 0xefcdab89; context->state[2] = 0x98badcfe; context->state[3] = 0x10325476; } /* MD5 block update operation. Continues an MD5 message-digest operation, processing another message block, and updating the context. */ void MD5Update (MD5_CTX *context, const unsigned char *input, unsigned int inputLen) { unsigned int i, index, partLen; /* Compute number of bytes mod 64 */ index = (unsigned int)((context->count[0] >> 3) & 0x3F); /* Update number of bits */ if ((context->count[0] += ((UINT4)inputLen << 3)) < ((UINT4)inputLen << 3)) { context->count[1]++; } context->count[1] += ((UINT4)inputLen >> 29); partLen = 64 - index; /* Transform as many times as possible. */ if (inputLen >= partLen) { MD5_memcpy((POINTER)&context->buffer[index], (POINTER)input, partLen); MD5Transform (context->state, context->buffer); for (i = partLen; i + 63 < inputLen; i += 64) { MD5Transform (context->state, &input[i]); } index = 0; } else { i = 0; } /* Buffer remaining input */ MD5_memcpy((POINTER)&context->buffer[index], (POINTER)&input[i], inputLen-i); } /* MD5 finalization. Ends an MD5 message-digest operation, writing the * the message digest and zeroizing the context. */ void MD5Final (unsigned char digest[16], MD5_CTX *context) { unsigned char bits[8]; unsigned int index, padLen; /* Save number of bits */ Encode (bits, context->count, 8); /* Pad out to 56 mod 64. */ index = (unsigned int)((context->count[0] >> 3) & 0x3f); padLen = (index < 56) ? (56 - index) : (120 - index); MD5Update (context, PADDING, padLen); /* Append length (before padding) */ MD5Update (context, bits, 8); /* Store state in digest */ Encode (digest, context->state, 16); /* Zeroize sensitive information.*/ MD5_memset ((POINTER)context, 0, sizeof (*context)); } /* MD5 basic transformation. Transforms state based on block. */ static void MD5Transform (UINT4 state[4], const unsigned char block[64]) { UINT4 a = state[0], b = state[1], c = state[2], d = state[3], x[16]; Decode (x, block, 64); /* Round 1 */ FF (a, b, c, d, x[ 0], S11, 0xd76aa478); /* 1 */ FF (d, a, b, c, x[ 1], S12, 0xe8c7b756); /* 2 */ FF (c, d, a, b, x[ 2], S13, 0x242070db); /* 3 */ FF (b, c, d, a, x[ 3], S14, 0xc1bdceee); /* 4 */ FF (a, b, c, d, x[ 4], S11, 0xf57c0faf); /* 5 */ FF (d, a, b, c, x[ 5], S12, 0x4787c62a); /* 6 */ FF (c, d, a, b, x[ 6], S13, 0xa8304613); /* 7 */ FF (b, c, d, a, x[ 7], S14, 0xfd469501); /* 8 */ FF (a, b, c, d, x[ 8], S11, 0x698098d8); /* 9 */ FF (d, a, b, c, x[ 9], S12, 0x8b44f7af); /* 10 */ FF (c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */ FF (b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */ FF (a, b, c, d, x[12], S11, 0x6b901122); /* 13 */ FF (d, a, b, c, x[13], S12, 0xfd987193); /* 14 */ FF (c, d, a, b, x[14], S13, 0xa679438e); /* 15 */ FF (b, c, d, a, x[15], S14, 0x49b40821); /* 16 */ /* Round 2 */ GG (a, b, c, d, x[ 1], S21, 0xf61e2562); /* 17 */ GG (d, a, b, c, x[ 6], S22, 0xc040b340); /* 18 */ GG (c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */ GG (b, c, d, a, x[ 0], S24, 0xe9b6c7aa); /* 20 */ GG (a, b, c, d, x[ 5], S21, 0xd62f105d); /* 21 */ GG (d, a, b, c, x[10], S22, 0x2441453); /* 22 */ GG (c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */ GG (b, c, d, a, x[ 4], S24, 0xe7d3fbc8); /* 24 */ GG (a, b, c, d, x[ 9], S21, 0x21e1cde6); /* 25 */ GG (d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */ GG (c, d, a, b, x[ 3], S23, 0xf4d50d87); /* 27 */ GG (b, c, d, a, x[ 8], S24, 0x455a14ed); /* 28 */ GG (a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */ GG (d, a, b, c, x[ 2], S22, 0xfcefa3f8); /* 30 */ GG (c, d, a, b, x[ 7], S23, 0x676f02d9); /* 31 */ GG (b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */ /* Round 3 */ HH (a, b, c, d, x[ 5], S31, 0xfffa3942); /* 33 */ HH (d, a, b, c, x[ 8], S32, 0x8771f681); /* 34 */ HH (c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */ HH (b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */ HH (a, b, c, d, x[ 1], S31, 0xa4beea44); /* 37 */ HH (d, a, b, c, x[ 4], S32, 0x4bdecfa9); /* 38 */ HH (c, d, a, b, x[ 7], S33, 0xf6bb4b60); /* 39 */ HH (b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */ HH (a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */ HH (d, a, b, c, x[ 0], S32, 0xeaa127fa); /* 42 */ HH (c, d, a, b, x[ 3], S33, 0xd4ef3085); /* 43 */ HH (b, c, d, a, x[ 6], S34, 0x4881d05); /* 44 */ HH (a, b, c, d, x[ 9], S31, 0xd9d4d039); /* 45 */ HH (d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */ HH (c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */ HH (b, c, d, a, x[ 2], S34, 0xc4ac5665); /* 48 */ /* Round 4 */ II (a, b, c, d, x[ 0], S41, 0xf4292244); /* 49 */ II (d, a, b, c, x[ 7], S42, 0x432aff97); /* 50 */ II (c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */ II (b, c, d, a, x[ 5], S44, 0xfc93a039); /* 52 */ II (a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */ II (d, a, b, c, x[ 3], S42, 0x8f0ccc92); /* 54 */ II (c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */ II (b, c, d, a, x[ 1], S44, 0x85845dd1); /* 56 */ II (a, b, c, d, x[ 8], S41, 0x6fa87e4f); /* 57 */ II (d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */ II (c, d, a, b, x[ 6], S43, 0xa3014314); /* 59 */ II (b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */ II (a, b, c, d, x[ 4], S41, 0xf7537e82); /* 61 */ II (d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */ II (c, d, a, b, x[ 2], S43, 0x2ad7d2bb); /* 63 */ II (b, c, d, a, x[ 9], S44, 0xeb86d391); /* 64 */ state[0] += a; state[1] += b; state[2] += c; state[3] += d; /* Zeroize sensitive information. */ MD5_memset ((POINTER)x, 0, sizeof (x)); } /* Encodes input (UINT4) into output (unsigned char). Assumes len is a multiple of 4. */ static void Encode (unsigned char *output, UINT4 *input, unsigned int len) { unsigned int i, j; for (i = 0, j = 0; j < len; i++, j += 4) { output[j] = (unsigned char)(input[i] & 0xff); output[j+1] = (unsigned char)((input[i] >> 8) & 0xff); output[j+2] = (unsigned char)((input[i] >> 16) & 0xff); output[j+3] = (unsigned char)((input[i] >> 24) & 0xff); } } /* Decodes input (unsigned char) into output (UINT4). Assumes len is a multiple of 4. */ static void Decode (UINT4 *output, const unsigned char *input, unsigned int len) { unsigned int i, j; for (i = 0, j = 0; j < len; i++, j += 4) output[i] = ((UINT4)input[j]) | (((UINT4)input[j+1]) << 8) | (((UINT4)input[j+2]) << 16) | (((UINT4)input[j+3]) << 24); } /* Note: Replace "for loop" with standard memcpy if possible. */ static void MD5_memcpy (POINTER output, POINTER input, unsigned int len) { unsigned int i; for (i = 0; i < len; i++) output[i] = input[i]; } /* Note: Replace "for loop" with standard memset if possible. */ static void MD5_memset (POINTER output, int value, unsigned int len) { unsigned int i; for (i = 0; i < len; i++) ((char *)output)[i] = (char)value; }