masqmail

annotate src/base64/base64.c @ 75:257a9e6d1a8e

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fixed correct processing of mails with data lines longer 4096 chars Mail messages with lines longer than 4096 chars were already read correctly, i.e. the spool files were correct. This commit fixes the reading of spool files with long lines. The old behavior was that the message body was truncated right before the first line longer 4096 chars. The number comes from MAX_DATALINE.
author meillo@marmaro.de
date Wed, 16 Jun 2010 19:06:34 +0200
parents 08114f7dcc23
children 589c365d90b1
rev   line source
meillo@0 1 /* base64.c, Copyright 2000 (C) Oliver Kurth,
meillo@0 2 *
meillo@0 3 * This program is free software; you can redistribute it and/or modify
meillo@0 4 * it under the terms of the GNU General Public License as published by
meillo@0 5 * the Free Software Foundation; either version 2 of the License, or
meillo@0 6 * (at your option) any later version.
meillo@10 7 *
meillo@0 8 * This program is distributed in the hope that it will be useful,
meillo@0 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
meillo@0 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
meillo@0 11 * GNU General Public License for more details.
meillo@0 12 *
meillo@0 13 * You should have received a copy of the GNU General Public License
meillo@0 14 * along with this program; if not, write to the Free Software
meillo@0 15 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
meillo@0 16 */
meillo@0 17
meillo@0 18 /*
meillo@0 19 send bugs to: kurth@innominate.de
meillo@0 20 */
meillo@0 21
meillo@0 22 /* see also RFC 1341 */
meillo@0 23
meillo@0 24 #include <glib.h>
meillo@0 25 #include <string.h>
meillo@0 26 #include "base64.h"
meillo@0 27
meillo@10 28 gchar*
meillo@10 29 base64_encode(guchar * buf, gint len)
meillo@0 30 {
meillo@10 31 guchar *outbuf, *q;
meillo@10 32 gchar enc[64];
meillo@10 33 gint i = 0, j = 0;
meillo@10 34 guint in0, in1, in2;
meillo@0 35
meillo@10 36 for (; i < 26; i++)
meillo@10 37 enc[i] = (gchar) ('A' + j++);
meillo@10 38 j = 0;
meillo@10 39 for (; i < 52; i++)
meillo@10 40 enc[i] = (gchar) ('a' + j++);
meillo@10 41 j = 0;
meillo@10 42 for (; i < 62; i++)
meillo@10 43 enc[i] = (gchar) ('0' + j++);
meillo@10 44 enc[i++] = '+';
meillo@10 45 enc[i++] = '/';
meillo@0 46
meillo@10 47 outbuf = g_malloc(((len + 3) * 8) / 6);
meillo@10 48 q = outbuf;
meillo@0 49
meillo@10 50 i = 0;
meillo@10 51 while (i < len - 2) {
meillo@10 52 in0 = buf[i++];
meillo@10 53 in1 = buf[i++];
meillo@10 54 in2 = buf[i++];
meillo@0 55
meillo@10 56 *(q++) = enc[(in0 >> 2) & 0x3f];
meillo@10 57 *(q++) = enc[((in0 << 4) | (in1 >> 4)) & 0x3f];
meillo@10 58 *(q++) = enc[((in1 << 2) | (in2 >> 6)) & 0x3f];
meillo@10 59 *(q++) = enc[in2 & 0x3f];
meillo@10 60 }
meillo@10 61 if ((len - i) == 1) {
meillo@10 62 in0 = buf[i++];
meillo@10 63 *(q++) = enc[(in0 >> 2) & 0x3f];
meillo@10 64 *(q++) = enc[(in0 << 4) & 0x3f];
meillo@10 65 *(q++) = '=';
meillo@10 66 *(q++) = '=';
meillo@10 67 } else if ((len - i) == 2) {
meillo@10 68 in0 = buf[i++];
meillo@10 69 in1 = buf[i++];
meillo@10 70 *(q++) = enc[(in0 >> 2) & 0x3f];
meillo@10 71 *(q++) = enc[((in0 << 4) | (in1 >> 4)) & 0x3f];
meillo@10 72 *(q++) = enc[(in1 << 2) & 0x3f];
meillo@10 73 *(q++) = '=';
meillo@10 74 }
meillo@10 75 *q = 0;
meillo@0 76
meillo@10 77 return outbuf;
meillo@0 78 }
meillo@0 79
meillo@10 80 gchar *base64_decode(gchar * buf, gint * size)
meillo@10 81 {
meillo@10 82 guchar *p = buf, *q;
meillo@10 83 guint in[4];
meillo@10 84 /* gchar *out = g_malloc(((strlen(buf)+3) * 3) / 4 + 1); */
meillo@10 85 gchar *out = g_malloc((strlen(buf) + 3) + 1);
meillo@10 86
meillo@10 87 q = out;
meillo@10 88 *size = 0;
meillo@10 89
meillo@10 90 *q = 0;
meillo@10 91
meillo@10 92 while (*p) {
meillo@10 93 int i = 0;
meillo@10 94 while (i < 4) {
meillo@10 95 if (!*p)
meillo@10 96 break;
meillo@10 97 if ((*p >= 'A') && (*p <= 'Z'))
meillo@10 98 in[i++] = *p - 'A';
meillo@10 99 else if ((*p >= 'a') && (*p <= 'z'))
meillo@10 100 in[i++] = (*p - 'a') + 26;
meillo@10 101 else if ((*p >= '0') && (*p <= '9'))
meillo@10 102 in[i++] = (*p - '0') + 52;
meillo@10 103 else if (*p == '+')
meillo@10 104 in[i++] = 62;
meillo@10 105 else if (*p == '/')
meillo@10 106 in[i++] = 63;
meillo@10 107 else if (*p == '=') {
meillo@10 108 in[i++] = 0;
meillo@10 109 p++;
meillo@10 110 break;
meillo@10 111 } else if ((*p != '\r') && (*p != '\n')) {
meillo@10 112 p++;
meillo@10 113 break;
meillo@10 114 }
meillo@10 115 p++;
meillo@10 116 }
meillo@10 117 if ((i == 4) || (p[-1] == '=')) {
meillo@10 118 *(q++) = ((in[0] << 2) | (in[1] >> 4));
meillo@10 119 *(q++) = ((in[1] << 4) | (in[2] >> 2));
meillo@10 120 *(q++) = ((in[2] << 6) | in[3]);
meillo@10 121 if (p[-1] == '=') {
meillo@10 122 if (i == 3) {
meillo@10 123 (*size)++;
meillo@10 124 } else if (i == 4) {
meillo@10 125 (*size) += 2;
meillo@10 126 }
meillo@10 127 } else {
meillo@10 128 *size += 3;
meillo@10 129 }
meillo@10 130 }
meillo@10 131 }
meillo@10 132 return out;
meillo@10 133 }