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-rw-r--r--lib/libalpm/md5.c333
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diff --git a/lib/libalpm/md5.c b/lib/libalpm/md5.c
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--- a/lib/libalpm/md5.c
+++ /dev/null
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-/*
- * RFC 1321 compliant MD5 implementation
- *
- * Copyright (C) 2006-2010, Brainspark B.V.
- *
- * This file is part of PolarSSL (http://www.polarssl.org)
- * Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
- *
- * All rights reserved.
- *
- * 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, see <http://www.gnu.org/licenses/>.
- */
-/*
- * The MD5 algorithm was designed by Ron Rivest in 1991.
- *
- * http://www.ietf.org/rfc/rfc1321.txt
- */
-/*
- * Pacman Notes:
- *
- * Taken from the PolarSSL project at http://polarssl.org under terms of the
- * GPL. This is from version 1.0.0 of the library, and has been modified
- * as following, which may be helpful for future updates:
- * * remove "polarssl/config.h" include
- * * change include from "polarssl/md5.h" to "md5.h"
- * * removal of HMAC code
- * * removal of SELF_TEST code
- * * removal of ipad and opad from the md5_context struct in md5.h
- * * increase the size of buffer for performance reasons
- * * change 'unsigned long' to uint32_t
- */
-
-#include <stdio.h>
-#include <stdint.h>
-
-#include "md5.h"
-
-/*
- * 32-bit integer manipulation macros (little endian)
- */
-#ifndef GET_U32_LE
-#define GET_U32_LE(n,b,i) \
-{ \
- (n) = ( (uint32_t) (b)[(i) ] ) \
- | ( (uint32_t) (b)[(i) + 1] << 8 ) \
- | ( (uint32_t) (b)[(i) + 2] << 16 ) \
- | ( (uint32_t) (b)[(i) + 3] << 24 ); \
-}
-#endif
-
-#ifndef PUT_U32_LE
-#define PUT_U32_LE(n,b,i) \
-{ \
- (b)[(i) ] = (unsigned char) ( (n) ); \
- (b)[(i) + 1] = (unsigned char) ( (n) >> 8 ); \
- (b)[(i) + 2] = (unsigned char) ( (n) >> 16 ); \
- (b)[(i) + 3] = (unsigned char) ( (n) >> 24 ); \
-}
-#endif
-
-/*
- * MD5 context setup
- */
-static void md5_starts( md5_context *ctx )
-{
- ctx->total[0] = 0;
- ctx->total[1] = 0;
-
- ctx->state[0] = 0x67452301;
- ctx->state[1] = 0xEFCDAB89;
- ctx->state[2] = 0x98BADCFE;
- ctx->state[3] = 0x10325476;
-}
-
-static void md5_process( md5_context *ctx, const unsigned char data[64] )
-{
- uint32_t X[16], A, B, C, D;
-
- GET_U32_LE( X[ 0], data, 0 );
- GET_U32_LE( X[ 1], data, 4 );
- GET_U32_LE( X[ 2], data, 8 );
- GET_U32_LE( X[ 3], data, 12 );
- GET_U32_LE( X[ 4], data, 16 );
- GET_U32_LE( X[ 5], data, 20 );
- GET_U32_LE( X[ 6], data, 24 );
- GET_U32_LE( X[ 7], data, 28 );
- GET_U32_LE( X[ 8], data, 32 );
- GET_U32_LE( X[ 9], data, 36 );
- GET_U32_LE( X[10], data, 40 );
- GET_U32_LE( X[11], data, 44 );
- GET_U32_LE( X[12], data, 48 );
- GET_U32_LE( X[13], data, 52 );
- GET_U32_LE( X[14], data, 56 );
- GET_U32_LE( X[15], data, 60 );
-
-#define S(x,n) ((x << n) | ((x & 0xFFFFFFFF) >> (32 - n)))
-
-#define P(a,b,c,d,k,s,t) \
-{ \
- a += F(b,c,d) + X[k] + t; a = S(a,s) + b; \
-}
-
- A = ctx->state[0];
- B = ctx->state[1];
- C = ctx->state[2];
- D = ctx->state[3];
-
-#define F(x,y,z) (z ^ (x & (y ^ z)))
-
- P( A, B, C, D, 0, 7, 0xD76AA478 );
- P( D, A, B, C, 1, 12, 0xE8C7B756 );
- P( C, D, A, B, 2, 17, 0x242070DB );
- P( B, C, D, A, 3, 22, 0xC1BDCEEE );
- P( A, B, C, D, 4, 7, 0xF57C0FAF );
- P( D, A, B, C, 5, 12, 0x4787C62A );
- P( C, D, A, B, 6, 17, 0xA8304613 );
- P( B, C, D, A, 7, 22, 0xFD469501 );
- P( A, B, C, D, 8, 7, 0x698098D8 );
- P( D, A, B, C, 9, 12, 0x8B44F7AF );
- P( C, D, A, B, 10, 17, 0xFFFF5BB1 );
- P( B, C, D, A, 11, 22, 0x895CD7BE );
- P( A, B, C, D, 12, 7, 0x6B901122 );
- P( D, A, B, C, 13, 12, 0xFD987193 );
- P( C, D, A, B, 14, 17, 0xA679438E );
- P( B, C, D, A, 15, 22, 0x49B40821 );
-
-#undef F
-
-#define F(x,y,z) (y ^ (z & (x ^ y)))
-
- P( A, B, C, D, 1, 5, 0xF61E2562 );
- P( D, A, B, C, 6, 9, 0xC040B340 );
- P( C, D, A, B, 11, 14, 0x265E5A51 );
- P( B, C, D, A, 0, 20, 0xE9B6C7AA );
- P( A, B, C, D, 5, 5, 0xD62F105D );
- P( D, A, B, C, 10, 9, 0x02441453 );
- P( C, D, A, B, 15, 14, 0xD8A1E681 );
- P( B, C, D, A, 4, 20, 0xE7D3FBC8 );
- P( A, B, C, D, 9, 5, 0x21E1CDE6 );
- P( D, A, B, C, 14, 9, 0xC33707D6 );
- P( C, D, A, B, 3, 14, 0xF4D50D87 );
- P( B, C, D, A, 8, 20, 0x455A14ED );
- P( A, B, C, D, 13, 5, 0xA9E3E905 );
- P( D, A, B, C, 2, 9, 0xFCEFA3F8 );
- P( C, D, A, B, 7, 14, 0x676F02D9 );
- P( B, C, D, A, 12, 20, 0x8D2A4C8A );
-
-#undef F
-
-#define F(x,y,z) (x ^ y ^ z)
-
- P( A, B, C, D, 5, 4, 0xFFFA3942 );
- P( D, A, B, C, 8, 11, 0x8771F681 );
- P( C, D, A, B, 11, 16, 0x6D9D6122 );
- P( B, C, D, A, 14, 23, 0xFDE5380C );
- P( A, B, C, D, 1, 4, 0xA4BEEA44 );
- P( D, A, B, C, 4, 11, 0x4BDECFA9 );
- P( C, D, A, B, 7, 16, 0xF6BB4B60 );
- P( B, C, D, A, 10, 23, 0xBEBFBC70 );
- P( A, B, C, D, 13, 4, 0x289B7EC6 );
- P( D, A, B, C, 0, 11, 0xEAA127FA );
- P( C, D, A, B, 3, 16, 0xD4EF3085 );
- P( B, C, D, A, 6, 23, 0x04881D05 );
- P( A, B, C, D, 9, 4, 0xD9D4D039 );
- P( D, A, B, C, 12, 11, 0xE6DB99E5 );
- P( C, D, A, B, 15, 16, 0x1FA27CF8 );
- P( B, C, D, A, 2, 23, 0xC4AC5665 );
-
-#undef F
-
-#define F(x,y,z) (y ^ (x | ~z))
-
- P( A, B, C, D, 0, 6, 0xF4292244 );
- P( D, A, B, C, 7, 10, 0x432AFF97 );
- P( C, D, A, B, 14, 15, 0xAB9423A7 );
- P( B, C, D, A, 5, 21, 0xFC93A039 );
- P( A, B, C, D, 12, 6, 0x655B59C3 );
- P( D, A, B, C, 3, 10, 0x8F0CCC92 );
- P( C, D, A, B, 10, 15, 0xFFEFF47D );
- P( B, C, D, A, 1, 21, 0x85845DD1 );
- P( A, B, C, D, 8, 6, 0x6FA87E4F );
- P( D, A, B, C, 15, 10, 0xFE2CE6E0 );
- P( C, D, A, B, 6, 15, 0xA3014314 );
- P( B, C, D, A, 13, 21, 0x4E0811A1 );
- P( A, B, C, D, 4, 6, 0xF7537E82 );
- P( D, A, B, C, 11, 10, 0xBD3AF235 );
- P( C, D, A, B, 2, 15, 0x2AD7D2BB );
- P( B, C, D, A, 9, 21, 0xEB86D391 );
-
-#undef F
-
- ctx->state[0] += A;
- ctx->state[1] += B;
- ctx->state[2] += C;
- ctx->state[3] += D;
-}
-
-/*
- * MD5 process buffer
- */
-static void md5_update( md5_context *ctx, const unsigned char *input, size_t ilen )
-{
- size_t fill;
- uint32_t left;
-
- if( ilen <= 0 )
- return;
-
- left = ctx->total[0] & 0x3F;
- fill = 64 - left;
-
- ctx->total[0] += (uint32_t) ilen;
- ctx->total[0] &= 0xFFFFFFFF;
-
- if( ctx->total[0] < (uint32_t) ilen )
- ctx->total[1]++;
-
- if( left && ilen >= fill )
- {
- memcpy( (void *) (ctx->buffer + left),
- (void *) input, fill );
- md5_process( ctx, ctx->buffer );
- input += fill;
- ilen -= fill;
- left = 0;
- }
-
- while( ilen >= 64 )
- {
- md5_process( ctx, input );
- input += 64;
- ilen -= 64;
- }
-
- if( ilen > 0 )
- {
- memcpy( (void *) (ctx->buffer + left),
- (void *) input, ilen );
- }
-}
-
-static const unsigned char md5_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
-};
-
-/*
- * MD5 final digest
- */
-static void md5_finish( md5_context *ctx, unsigned char output[16] )
-{
- uint32_t last, padn;
- uint32_t high, low;
- unsigned char msglen[8];
-
- high = ( ctx->total[0] >> 29 )
- | ( ctx->total[1] << 3 );
- low = ( ctx->total[0] << 3 );
-
- PUT_U32_LE( low, msglen, 0 );
- PUT_U32_LE( high, msglen, 4 );
-
- last = ctx->total[0] & 0x3F;
- padn = ( last < 56 ) ? ( 56 - last ) : ( 120 - last );
-
- md5_update( ctx, (unsigned char *) md5_padding, padn );
- md5_update( ctx, msglen, 8 );
-
- PUT_U32_LE( ctx->state[0], output, 0 );
- PUT_U32_LE( ctx->state[1], output, 4 );
- PUT_U32_LE( ctx->state[2], output, 8 );
- PUT_U32_LE( ctx->state[3], output, 12 );
-}
-
-/*
- * output = MD5( input buffer )
- */
-void md5( const unsigned char *input, size_t ilen, unsigned char output[16] )
-{
- md5_context ctx;
-
- md5_starts( &ctx );
- md5_update( &ctx, input, ilen );
- md5_finish( &ctx, output );
-
- memset( &ctx, 0, sizeof( md5_context ) );
-}
-
-/*
- * output = MD5( file contents )
- */
-int md5_file( const char *path, unsigned char output[16] )
-{
- FILE *f;
- size_t n;
- md5_context ctx;
- unsigned char buf[4096];
-
- if( ( f = fopen( path, "rb" ) ) == NULL )
- return( 1 );
-
- md5_starts( &ctx );
-
- while( ( n = fread( buf, 1, sizeof( buf ), f ) ) > 0 )
- md5_update( &ctx, buf, n );
-
- md5_finish( &ctx, output );
-
- memset( &ctx, 0, sizeof( md5_context ) );
-
- if( ferror( f ) != 0 )
- {
- fclose( f );
- return( 2 );
- }
-
- fclose( f );
- return( 0 );
-}
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