masqmail

annotate src/header.c @ 215:08b32edca1d5

find changesets by author, revision, files, or words in the commit message
added the contents of the old FAQ page it surely needs an update
author meillo@marmaro.de
date Mon, 19 Jul 2010 14:10:14 +0200
parents f671821d8222
children 92063f90f9be
rev   line source
meillo@0 1 /* MasqMail
meillo@0 2 Copyright (C) 2000 Oliver Kurth
meillo@0 3
meillo@0 4 This program is free software; you can redistribute it and/or modify
meillo@0 5 it under the terms of the GNU General Public License as published by
meillo@0 6 the Free Software Foundation; either version 2 of the License, or
meillo@0 7 (at your option) any later version.
meillo@0 8
meillo@0 9 This program is distributed in the hope that it will be useful,
meillo@0 10 but WITHOUT ANY WARRANTY; without even the implied warranty of
meillo@0 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
meillo@0 12 GNU General Public License for more details.
meillo@0 13
meillo@0 14 You should have received a copy of the GNU General Public License
meillo@0 15 along with this program; if not, write to the Free Software
meillo@0 16 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
meillo@0 17 */
meillo@0 18 #include "masqmail.h"
meillo@0 19
meillo@10 20 header_name header_names[] = {
meillo@15 21 {"From", HEAD_FROM,},
meillo@15 22 {"Sender", HEAD_SENDER,},
meillo@15 23 {"To", HEAD_TO,},
meillo@15 24 {"Cc", HEAD_CC,},
meillo@15 25 {"Bcc", HEAD_BCC,},
meillo@15 26 {"Date", HEAD_DATE,},
meillo@15 27 {"Message-Id", HEAD_MESSAGE_ID,},
meillo@15 28 {"Reply-To", HEAD_REPLY_TO,},
meillo@15 29 {"Subject", HEAD_SUBJECT,},
meillo@15 30 {"Return-Path", HEAD_RETURN_PATH,},
meillo@15 31 {"Envelope-To", HEAD_ENVELOPE_TO,},
meillo@15 32 {"Received", HEAD_RECEIVED},
meillo@0 33 };
meillo@0 34
meillo@0 35 /* this was borrowed from exim and slightly changed */
meillo@10 36 gchar*
meillo@10 37 rec_timestamp()
meillo@0 38 {
meillo@10 39 static gchar buf[64];
meillo@10 40 int len;
meillo@0 41
meillo@10 42 time_t now = time(NULL);
meillo@10 43 struct tm *t = localtime(&now);
meillo@0 44
meillo@10 45 int diff_hour, diff_min;
meillo@10 46 struct tm local;
meillo@10 47 struct tm *gmt;
meillo@0 48
meillo@10 49 memcpy(&local, t, sizeof(struct tm));
meillo@10 50 gmt = gmtime(&now);
meillo@10 51 diff_min = 60 * (local.tm_hour - gmt->tm_hour) + local.tm_min - gmt->tm_min;
meillo@10 52 if (local.tm_year != gmt->tm_year)
meillo@10 53 diff_min += (local.tm_year > gmt->tm_year) ? 1440 : -1440;
meillo@10 54 else if (local.tm_yday != gmt->tm_yday)
meillo@10 55 diff_min += (local.tm_yday > gmt->tm_yday) ? 1440 : -1440;
meillo@10 56 diff_hour = diff_min / 60;
meillo@10 57 diff_min = abs(diff_min - diff_hour * 60);
meillo@0 58
meillo@10 59 len = strftime(buf, sizeof(buf), "%a, ", &local);
meillo@10 60 g_snprintf(buf + len, sizeof(buf) - len, "%02d ", local.tm_mday);
meillo@10 61 len += strlen(buf + len);
meillo@10 62 len += strftime(buf + len, sizeof(buf) - len, "%b %Y %H:%M:%S", &local);
meillo@10 63 g_snprintf(buf + len, sizeof(buf) - len, " %+03d%02d", diff_hour, diff_min);
meillo@10 64
meillo@10 65 return buf;
meillo@0 66 }
meillo@0 67
meillo@0 68 /* finds list of headers matching id
meillo@0 69 if id == HEAD_UNKNOWN and header == NULL finds all unknown headers
meillo@0 70 else finds all headers matching header
meillo@0 71 */
meillo@10 72 GList*
meillo@10 73 find_header(GList * hdr_list, header_id id, gchar * hdr_str)
meillo@0 74 {
meillo@10 75 GList *found_list = NULL;
meillo@10 76 GList *node;
meillo@0 77
meillo@10 78 if ((id != HEAD_UNKNOWN) || (hdr_str == NULL)) {
meillo@10 79 foreach(hdr_list, node) {
meillo@10 80 header *hdr = (header *) (node->data);
meillo@10 81 if (hdr->id == id)
meillo@10 82 found_list = g_list_append(found_list, hdr);
meillo@10 83 }
meillo@10 84 } else {
meillo@10 85 foreach(hdr_list, node) {
meillo@10 86 header *hdr = (header *) (node->data);
meillo@10 87 gchar buf[64], *q = buf, *p = hdr->header;
meillo@10 88
meillo@10 89 while (*p != ':' && q < buf + 63 && *p)
meillo@10 90 *(q++) = *(p++);
meillo@15 91 *q = '\0';
meillo@10 92
meillo@10 93 if (strcasecmp(buf, hdr_str) == 0)
meillo@10 94 found_list = g_list_append(found_list, hdr);
meillo@10 95 }
meillo@10 96 }
meillo@10 97 return found_list;
meillo@0 98 }
meillo@0 99
meillo@10 100 void
meillo@10 101 header_unfold(header * hdr)
meillo@0 102 {
meillo@10 103 gchar *tmp_hdr = g_malloc(strlen(hdr->header));
meillo@10 104 gchar *p = hdr->header, *q = tmp_hdr;
meillo@10 105 gboolean flag = FALSE;
meillo@0 106
meillo@10 107 while (*p) {
meillo@10 108 if (*p != '\n')
meillo@10 109 *(q++) = *p;
meillo@10 110 else
meillo@10 111 flag = TRUE;
meillo@10 112 p++;
meillo@10 113 }
meillo@10 114 *(q++) = '\n';
meillo@0 115
meillo@10 116 if (flag) {
meillo@10 117 gchar *new_hdr;
meillo@0 118
meillo@10 119 g_free(hdr->header);
meillo@10 120 new_hdr = g_strdup(tmp_hdr);
meillo@10 121 g_free(tmp_hdr);
meillo@10 122 hdr->value = new_hdr + (hdr->value - hdr->header);
meillo@10 123 hdr->header = new_hdr;
meillo@10 124 }
meillo@0 125 }
meillo@0 126
meillo@0 127 #define MAX_HDR_LEN 72
meillo@10 128 void
meillo@10 129 header_fold(header * hdr)
meillo@0 130 {
meillo@10 131 gint len = strlen(hdr->header);
meillo@10 132 gchar *p, *q;
meillo@10 133 /* size is probably overestimated, but so we are on the safe side */
meillo@10 134 gchar *tmp_hdr = g_malloc(len + 2 * len / MAX_HDR_LEN);
meillo@0 135
meillo@10 136 p = hdr->header;
meillo@10 137 q = tmp_hdr;
meillo@0 138
meillo@10 139 if (p[len - 1] == '\n')
meillo@15 140 p[len - 1] = '\0';
meillo@0 141
meillo@10 142 while (*p) {
meillo@10 143 gint i, l;
meillo@10 144 gchar *pp;
meillo@0 145
meillo@10 146 /* look forward and find potential break points */
meillo@10 147 i = 0;
meillo@10 148 l = -1;
meillo@10 149 pp = p;
meillo@10 150 while (*pp && (i < MAX_HDR_LEN)) {
meillo@10 151 if ((*pp == ' ') || (*pp == '\t'))
meillo@10 152 l = i;
meillo@10 153 pp++;
meillo@10 154 i++;
meillo@10 155 }
meillo@10 156 if (!*pp)
meillo@10 157 l = pp - p; /* take rest, if EOS found */
meillo@0 158
meillo@10 159 if (l == -1) {
meillo@10 160 /* no potential break point was found within MAX_HDR_LEN so advance further until the next */
meillo@10 161 while (*pp && *pp != ' ' && *pp != '\t') {
meillo@10 162 pp++;
meillo@10 163 i++;
meillo@10 164 }
meillo@10 165 l = i;
meillo@10 166 }
meillo@10 167
meillo@10 168 /* copy */
meillo@10 169 i = 0;
meillo@10 170 while (i < l) {
meillo@10 171 *(q++) = *(p++);
meillo@10 172 i++;
meillo@10 173 }
meillo@10 174 *(q++) = '\n';
meillo@15 175 *(q++) = *(p++); /* this is either space, tab or 0 */
meillo@10 176 }
meillo@10 177 {
meillo@10 178 gchar *new_hdr;
meillo@10 179
meillo@10 180 g_free(hdr->header);
meillo@10 181 new_hdr = g_strdup(tmp_hdr);
meillo@10 182 g_free(tmp_hdr);
meillo@10 183 hdr->value = new_hdr + (hdr->value - hdr->header);
meillo@10 184 hdr->header = new_hdr;
meillo@10 185 }
meillo@0 186 }
meillo@0 187
meillo@10 188 header*
meillo@10 189 create_header(header_id id, gchar * fmt, ...)
meillo@0 190 {
meillo@10 191 gchar *p;
meillo@10 192 header *hdr;
meillo@10 193 va_list args;
meillo@10 194 va_start(args, fmt);
meillo@0 195
meillo@10 196 if ((hdr = g_malloc(sizeof(header)))) {
meillo@0 197
meillo@10 198 hdr->id = id;
meillo@10 199 hdr->header = g_strdup_vprintf(fmt, args);
meillo@10 200 hdr->value = NULL;
meillo@0 201
meillo@10 202 p = hdr->header;
meillo@10 203 while (*p && *p != ':')
meillo@10 204 p++;
meillo@10 205 if (*p)
meillo@10 206 hdr->value = p + 1;
meillo@10 207 }
meillo@0 208
meillo@10 209 va_end(args);
meillo@10 210 return hdr;
meillo@0 211 }
meillo@0 212
meillo@10 213 void
meillo@10 214 destroy_header(header * hdr)
meillo@0 215 {
meillo@10 216 if (hdr) {
meillo@10 217 if (hdr->header)
meillo@10 218 g_free(hdr->header);
meillo@10 219 g_free(hdr);
meillo@10 220 }
meillo@0 221 }
meillo@0 222
meillo@10 223 header*
meillo@10 224 copy_header(header * hdr)
meillo@0 225 {
meillo@10 226 header *new_hdr = NULL;
meillo@0 227
meillo@10 228 if (hdr) {
meillo@10 229 if ((new_hdr = g_malloc(sizeof(header)))) {
meillo@10 230 new_hdr->id = hdr->id;
meillo@10 231 new_hdr->header = g_strdup(hdr->header);
meillo@10 232 new_hdr->value = new_hdr->header + (hdr->value - hdr->header);
meillo@10 233 }
meillo@10 234 }
meillo@10 235 return new_hdr;
meillo@0 236 }
meillo@0 237
meillo@10 238 header*
meillo@10 239 get_header(gchar * line)
meillo@0 240 {
meillo@10 241 gchar *p = line;
meillo@10 242 gchar buf[64], *q = buf;
meillo@10 243 gint i;
meillo@10 244 header *hdr;
meillo@0 245
meillo@10 246 while (*p && (*p != ':') && (q < buf + 63))
meillo@10 247 *(q++) = *(p++);
meillo@15 248 *q = '\0';
meillo@0 249
meillo@10 250 if (*p != ':')
meillo@10 251 return NULL;
meillo@0 252
meillo@10 253 hdr = g_malloc(sizeof(header));
meillo@0 254
meillo@10 255 hdr->value = NULL;
meillo@10 256 p++;
meillo@0 257
meillo@10 258 while (*p && (*p == ' ' || *p == '\t'))
meillo@10 259 p++;
meillo@10 260 hdr->value = p;
meillo@0 261
meillo@10 262 for (i = 0; i < HEAD_NUM_IDS; i++) {
meillo@10 263 if (strcasecmp(header_names[i].header, buf) == 0)
meillo@10 264 break;
meillo@10 265 }
meillo@10 266 hdr->id = (header_id) i;
meillo@10 267 hdr->header = g_strdup(line);
meillo@10 268 hdr->value = hdr->header + (hdr->value - line);
meillo@10 269
meillo@208 270 DEBUG(4) debugf("header: %d = %s\n", hdr->id, hdr->header);
meillo@10 271
meillo@10 272 return hdr;
meillo@0 273 }