Import Upstream version 4.92

[hcoop/debian/exim4.git] / src / pdkim / base64.c

diff --git a/src/pdkim/base64.c b/src/pdkim/base64.c
deleted file mode 100644 (file)
index a82fc2d..0000000
--- a/src/pdkim/base64.c
+++ /dev/null
@@ -1,181 +0,0 @@
-/*
- *  RFC 1521 base64 encoding/decoding
- *
- *  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, write to the Free Software Foundation, Inc.,
- *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#include "base64.h"
-
-static const unsigned char base64_enc_map[64] =
-{
-    'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J',
-    'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T',
-    'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd',
-    'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n',
-    'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x',
-    'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7',
-    '8', '9', '+', '/'
-};
-
-static const unsigned char base64_dec_map[128] =
-{
-    127, 127, 127, 127, 127, 127, 127, 127, 127, 127,
-    127, 127, 127, 127, 127, 127, 127, 127, 127, 127,
-    127, 127, 127, 127, 127, 127, 127, 127, 127, 127,
-    127, 127, 127, 127, 127, 127, 127, 127, 127, 127,
-    127, 127, 127,  62, 127, 127, 127,  63,  52,  53,
-     54,  55,  56,  57,  58,  59,  60,  61, 127, 127,
-    127,  64, 127, 127, 127,   0,   1,   2,   3,   4,
-      5,   6,   7,   8,   9,  10,  11,  12,  13,  14,
-     15,  16,  17,  18,  19,  20,  21,  22,  23,  24,
-     25, 127, 127, 127, 127, 127, 127,  26,  27,  28,
-     29,  30,  31,  32,  33,  34,  35,  36,  37,  38,
-     39,  40,  41,  42,  43,  44,  45,  46,  47,  48,
-     49,  50,  51, 127, 127, 127, 127, 127
-};
-
-/*
- * Encode a buffer into base64 format
- */
-int base64_encode( unsigned char *dst, int *dlen,
-                   const unsigned char *src, int  slen )
-{
-    int i, n;
-    int C1, C2, C3;
-    unsigned char *p;
-
-    if( slen == 0 )
-        return( 0 );
-
-    n = (slen << 3) / 6;
-
-    switch( (slen << 3) - (n * 6) )
-    {
-        case  2: n += 3; break;
-        case  4: n += 2; break;
-        default: break;
-    }
-
-    if( *dlen < n + 1 )
-    {
-        *dlen = n + 1;
-        return( POLARSSL_ERR_BASE64_BUFFER_TOO_SMALL );
-    }
-
-    n = (slen / 3) * 3;
-
-    for( i = 0, p = dst; i < n; i += 3 )
-    {
-        C1 = *src++;
-        C2 = *src++;
-        C3 = *src++;
-
-        *p++ = base64_enc_map[(C1 >> 2) & 0x3F];
-        *p++ = base64_enc_map[(((C1 &  3) << 4) + (C2 >> 4)) & 0x3F];
-        *p++ = base64_enc_map[(((C2 & 15) << 2) + (C3 >> 6)) & 0x3F];
-        *p++ = base64_enc_map[C3 & 0x3F];
-    }
-
-    if( i < slen )
-    {
-        C1 = *src++;
-        C2 = ((i + 1) < slen) ? *src++ : 0;
-
-        *p++ = base64_enc_map[(C1 >> 2) & 0x3F];
-        *p++ = base64_enc_map[(((C1 & 3) << 4) + (C2 >> 4)) & 0x3F];
-
-        if( (i + 1) < slen )
-             *p++ = base64_enc_map[((C2 & 15) << 2) & 0x3F];
-        else *p++ = '=';
-
-        *p++ = '=';
-    }
-
-    *dlen = p - dst;
-    *p = 0;
-
-    return( 0 );
-}
-
-/*
- * Decode a base64-formatted buffer
- */
-int base64_decode( unsigned char *dst, int *dlen,
-                   const unsigned char *src, int  slen )
-{
-    int i, j, n;
-    unsigned long x;
-    unsigned char *p;
-
-    for( i = j = n = 0; i < slen; i++ )
-    {
-        if( ( slen - i ) >= 2 &&
-            src[i] == '\r' && src[i + 1] == '\n' )
-            continue;
-
-        if( src[i] == '\n' )
-            continue;
-
-        if( src[i] == '=' && ++j > 2 )
-            return( POLARSSL_ERR_BASE64_INVALID_CHARACTER );
-
-        if( src[i] > 127 || base64_dec_map[src[i]] == 127 )
-            return( POLARSSL_ERR_BASE64_INVALID_CHARACTER );
-
-        if( base64_dec_map[src[i]] < 64 && j != 0 )
-            return( POLARSSL_ERR_BASE64_INVALID_CHARACTER );
-
-        n++;
-    }
-
-    if( n == 0 )
-        return( 0 );
-
-    n = ((n * 6) + 7) >> 3;
-
-    if( *dlen < n )
-    {
-        *dlen = n;
-        return( POLARSSL_ERR_BASE64_BUFFER_TOO_SMALL );
-    }
-
-   for( j = 3, n = x = 0, p = dst; i > 0; i--, src++ )
-   {
-        if( *src == '\r' || *src == '\n' )
-            continue;
-
-        j -= ( base64_dec_map[*src] == 64 );
-        x  = (x << 6) | ( base64_dec_map[*src] & 0x3F );
-
-        if( ++n == 4 )
-        {
-            n = 0;
-            if( j > 0 ) *p++ = (unsigned char)( x >> 16 );
-            if( j > 1 ) *p++ = (unsigned char)( x >>  8 );
-            if( j > 2 ) *p++ = (unsigned char)( x       );
-        }
-    }
-
-    *dlen = p - dst;
-
-    return( 0 );
-}