masqmail

annotate src/route.c @ 366:41958685480d

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Switched to `type *name' style Andrew Koenig's ``C Traps and Pitfalls'' (Ch.2.1) convinced me that it is best to go with the way C had been designed. The ``declaration reflects use'' concept conflicts with a ``type* name'' notation. Hence I switched.
author markus schnalke <meillo@marmaro.de>
date Thu, 22 Sep 2011 15:07:40 +0200
parents ddb7b3fd3d08
children b27f66555ba8
rev   line source
meillo@0 1 /* MasqMail
meillo@0 2 Copyright (C) 1999-2001 Oliver Kurth
meillo@241 3 Copyright (C) 2010 markus schnalke <meillo@marmaro.de>
meillo@0 4
meillo@0 5 This program is free software; you can redistribute it and/or modify
meillo@0 6 it under the terms of the GNU General Public License as published by
meillo@0 7 the Free Software Foundation; either version 2 of the License, or
meillo@0 8 (at your option) any later version.
meillo@0 9
meillo@0 10 This program is distributed in the hope that it will be useful,
meillo@0 11 but WITHOUT ANY WARRANTY; without even the implied warranty of
meillo@0 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
meillo@0 13 GNU General Public License for more details.
meillo@0 14
meillo@0 15 You should have received a copy of the GNU General Public License
meillo@0 16 along with this program; if not, write to the Free Software
meillo@0 17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
meillo@0 18 */
meillo@0 19
meillo@15 20 #include <fnmatch.h>
meillo@15 21
meillo@0 22 #include "masqmail.h"
meillo@0 23
meillo@10 24 msgout_perhost*
meillo@366 25 create_msgout_perhost(gchar *host)
meillo@0 26 {
meillo@10 27 msgout_perhost *mo_ph = g_malloc(sizeof(msgout_perhost));
meillo@10 28 if (mo_ph) {
meillo@10 29 mo_ph->host = g_strdup(host);
meillo@10 30 mo_ph->msgout_list = NULL;
meillo@10 31 }
meillo@10 32 return mo_ph;
meillo@0 33 }
meillo@0 34
meillo@10 35 void
meillo@366 36 destroy_msgout_perhost(msgout_perhost *mo_ph)
meillo@0 37 {
meillo@10 38 GList *mo_node;
meillo@0 39
meillo@10 40 foreach(mo_ph->msgout_list, mo_node) {
meillo@10 41 msg_out *mo = (msg_out *) (mo_node->data);
meillo@10 42 /* the rcpt_list is owned by the msgout's, but not the rcpt's themselves */
meillo@10 43 g_list_free(mo->rcpt_list);
meillo@10 44 g_free(mo);
meillo@10 45 }
meillo@10 46 g_list_free(mo_ph->msgout_list);
meillo@10 47 g_free(mo_ph);
meillo@0 48 }
meillo@0 49
meillo@10 50 void
meillo@366 51 rewrite_headers(msg_out *msgout, connect_route *route)
meillo@0 52 {
meillo@10 53 /* if set_h_from_domain is set, replace domain in all
meillo@10 54 From: headers.
meillo@10 55 */
meillo@10 56 msgout->hdr_list = g_list_copy(msgout->msg->hdr_list);
meillo@0 57
meillo@10 58 /* map from addresses */
meillo@10 59 if (route->map_h_from_addresses != NULL) {
meillo@10 60 GList *hdr_node;
meillo@10 61 foreach(msgout->hdr_list, hdr_node) {
meillo@10 62 header *hdr = (header *) (hdr_node->data);
meillo@10 63 if (hdr->id == HEAD_FROM) {
meillo@10 64 header *new_hdr = copy_header(hdr);
meillo@10 65 if (map_address_header(new_hdr, route->map_h_from_addresses)) {
meillo@10 66 hdr_node->data = new_hdr;
meillo@10 67 /* we need this list only to carefully free the extra headers: */
meillo@10 68 msgout->xtra_hdr_list = g_list_append(msgout->xtra_hdr_list, new_hdr);
meillo@10 69 } else
meillo@10 70 g_free(new_hdr);
meillo@10 71 }
meillo@10 72 }
meillo@10 73 } else {
meillo@10 74 /* replace from domain */
meillo@10 75 if (route->set_h_from_domain != NULL) {
meillo@10 76 GList *hdr_node;
meillo@10 77
meillo@10 78 foreach(msgout->hdr_list, hdr_node) {
meillo@10 79 header *hdr = (header *) (hdr_node->data);
meillo@10 80 if (hdr->id == HEAD_FROM) {
meillo@10 81 header *new_hdr = copy_header(hdr);
meillo@10 82
meillo@10 83 DEBUG(5) debugf("setting From: domain to %s\n", route->set_h_from_domain);
meillo@10 84 if (set_address_header_domain(new_hdr, route->set_h_from_domain)) {
meillo@10 85 hdr_node->data = new_hdr;
meillo@10 86 /* we need this list only to carefully free the extra headers: */
meillo@10 87 DEBUG(6) debugf("header = %s\n", new_hdr->header);
meillo@10 88 msgout->xtra_hdr_list = g_list_append(msgout->xtra_hdr_list, new_hdr);
meillo@10 89 } else {
meillo@15 90 logwrite(LOG_ALERT, "error in set_address_header_domain(%s, %s)\n",
meillo@15 91 new_hdr->value, route->set_h_from_domain);
meillo@10 92 }
meillo@10 93 }
meillo@10 94 }
meillo@10 95 }
meillo@0 96 }
meillo@0 97
meillo@10 98 /* map reply-to addresses */
meillo@10 99 if (route->map_h_reply_to_addresses != NULL) {
meillo@10 100 GList *hdr_node;
meillo@10 101 foreach(msgout->hdr_list, hdr_node) {
meillo@10 102 header *hdr = (header *) (hdr_node->data);
meillo@10 103 if (hdr->id == HEAD_REPLY_TO) {
meillo@10 104 header *new_hdr = copy_header(hdr);
meillo@10 105 if (map_address_header
meillo@10 106 (new_hdr, route->map_h_reply_to_addresses)) {
meillo@10 107 hdr_node->data = new_hdr;
meillo@10 108 /* we need this list only to carefully free the extra headers: */
meillo@10 109 msgout->xtra_hdr_list = g_list_append(msgout->xtra_hdr_list, new_hdr);
meillo@10 110 } else
meillo@10 111 g_free(new_hdr);
meillo@10 112 }
meillo@10 113 }
meillo@10 114 } else {
meillo@10 115 /* replace Reply-to domain */
meillo@10 116 if (route->set_h_reply_to_domain != NULL) {
meillo@10 117 GList *hdr_node;
meillo@10 118
meillo@10 119 foreach(msgout->hdr_list, hdr_node) {
meillo@10 120 header *hdr = (header *) (hdr_node->data);
meillo@10 121 if (hdr->id == HEAD_REPLY_TO) {
meillo@10 122 header *new_hdr = copy_header(hdr);
meillo@10 123
meillo@10 124 set_address_header_domain(new_hdr, route-> set_h_reply_to_domain);
meillo@10 125 hdr_node->data = new_hdr;
meillo@10 126 /* we need this list only to carefully free the extra headers: */
meillo@10 127 msgout->xtra_hdr_list = g_list_append(msgout->xtra_hdr_list, new_hdr);
meillo@10 128 }
meillo@10 129 }
meillo@10 130 }
meillo@0 131 }
meillo@0 132
meillo@10 133 /* map Mail-Followup-To addresses */
meillo@10 134 if (route->map_h_mail_followup_to_addresses != NULL) {
meillo@10 135 GList *hdr_node;
meillo@10 136 foreach(msgout->hdr_list, hdr_node) {
meillo@10 137 header *hdr = (header *) (hdr_node->data);
meillo@10 138 if (strncasecmp(hdr->header, "Mail-Followup-To", 16) == 0) {
meillo@10 139 header *new_hdr = copy_header(hdr);
meillo@10 140 if (map_address_header(new_hdr, route->map_h_mail_followup_to_addresses)) {
meillo@10 141 hdr_node->data = new_hdr;
meillo@10 142 /* we need this list only to carefully free the extra headers: */
meillo@10 143 msgout->xtra_hdr_list = g_list_append(msgout->xtra_hdr_list, new_hdr);
meillo@10 144 } else
meillo@10 145 g_free(new_hdr);
meillo@10 146 }
meillo@10 147 }
meillo@10 148 }
meillo@0 149
meillo@10 150 /* set Sender: domain to return_path->domain */
meillo@10 151 if (route->expand_h_sender_domain) {
meillo@10 152 GList *hdr_node;
meillo@0 153
meillo@10 154 foreach(msgout->hdr_list, hdr_node) {
meillo@10 155 header *hdr = (header *) (hdr_node->data);
meillo@10 156 if (hdr->id == HEAD_SENDER) {
meillo@10 157 header *new_hdr = copy_header(hdr);
meillo@0 158
meillo@10 159 set_address_header_domain(new_hdr, msgout->return_path->domain);
meillo@10 160 hdr_node->data = new_hdr;
meillo@10 161 /* we need this list only to carefully free the extra headers: */
meillo@10 162 msgout->xtra_hdr_list = g_list_append(msgout->xtra_hdr_list, new_hdr);
meillo@10 163 }
meillo@10 164 }
meillo@10 165 }
meillo@0 166
meillo@10 167 /* set Sender: domain to return_path->domain */
meillo@10 168 if (route->expand_h_sender_address) {
meillo@10 169 GList *hdr_node;
meillo@0 170
meillo@10 171 foreach(msgout->hdr_list, hdr_node) {
meillo@10 172 header *hdr = (header *) (hdr_node->data);
meillo@10 173 if (hdr->id == HEAD_SENDER) {
meillo@10 174 header *new_hdr;
meillo@0 175
meillo@15 176 new_hdr = create_header(HEAD_SENDER, "Sender: %s@%s\n",
meillo@15 177 msgout->return_path->local_part, msgout->return_path->domain);
meillo@10 178 hdr_node->data = new_hdr;
meillo@10 179 /* we need this list only to carefully free the extra headers: */
meillo@10 180 msgout->xtra_hdr_list = g_list_append(msgout->xtra_hdr_list, new_hdr);
meillo@10 181 }
meillo@10 182 }
meillo@10 183 }
meillo@0 184
meillo@10 185 if (msgout->xtra_hdr_list == NULL) {
meillo@10 186 /* nothing was changed */
meillo@10 187 g_list_free(msgout->hdr_list);
meillo@10 188 msgout->hdr_list = NULL;
meillo@10 189 }
meillo@10 190 DEBUG(5) debugf("rewrite_headers() returning\n");
meillo@0 191 }
meillo@0 192
meillo@237 193 /*
meillo@237 194 Split a recipient list into the three groups:
meillo@237 195 - local recipients
meillo@355 196 - those maching the patterns
meillo@355 197 - those not matching the patterns
meillo@355 198 If patterns is NULL: only splitting between local and others is done.
meillo@237 199 */
meillo@10 200 void
meillo@366 201 split_rcpts(GList *rcpt_list, GList *patterns, GList **rl_local, GList **rl_matching, GList **rl_others)
meillo@0 202 {
meillo@10 203 GList *rcpt_node;
meillo@237 204 GList *host_node = NULL;
meillo@237 205 address *rcpt = NULL;
meillo@0 206
meillo@10 207 if (rcpt_list == NULL)
meillo@10 208 return;
meillo@0 209
meillo@10 210 foreach(rcpt_list, rcpt_node) {
meillo@237 211 rcpt = (address *) (rcpt_node->data);
meillo@237 212 host_node = NULL;
meillo@0 213
meillo@237 214 if (addr_is_local(rcpt)) {
meillo@237 215 if (rl_local)
meillo@237 216 *rl_local = g_list_append(*rl_local, rcpt);
meillo@237 217 } else {
meillo@355 218 /* if patterns is NULL, host_node will be NULL,
meillo@237 219 hence all non-locals are put to others */
meillo@355 220 foreach(patterns, host_node) {
meillo@237 221 gchar *host = (gchar *) (host_node->data);
meillo@237 222 if (fnmatch(host, rcpt->domain, FNM_CASEFOLD) == 0)
meillo@237 223 break;
meillo@237 224 }
meillo@237 225 if (host_node) {
meillo@355 226 if (rl_matching)
meillo@355 227 *rl_matching = g_list_append(*rl_matching, rcpt);
meillo@237 228 } else {
meillo@237 229 if (rl_others)
meillo@237 230 *rl_others = g_list_append(*rl_others, rcpt);
meillo@237 231 }
meillo@10 232 }
meillo@10 233 }
meillo@0 234 }
meillo@0 235
meillo@345 236 /*
meillo@345 237 Return a new list of the local rcpts in the rcpt_list
meillo@345 238 TODO: This function is almost exactly the same as remote_rcpts(). Merge?
meillo@345 239 */
meillo@345 240 GList*
meillo@366 241 local_rcpts(GList *rcpt_list)
meillo@345 242 {
meillo@345 243 GList *rcpt_node;
meillo@345 244 GList *local_rcpts = NULL;
meillo@345 245 address *rcpt = NULL;
meillo@345 246
meillo@345 247 if (!rcpt_list) {
meillo@345 248 return NULL;
meillo@345 249 }
meillo@345 250 foreach(rcpt_list, rcpt_node) {
meillo@345 251 rcpt = (address *) (rcpt_node->data);
meillo@345 252 if (addr_is_local(rcpt)) {
meillo@345 253 local_rcpts = g_list_append(local_rcpts, rcpt);
meillo@345 254 }
meillo@345 255 }
meillo@345 256 return local_rcpts;
meillo@345 257 }
meillo@345 258
meillo@345 259 /*
meillo@345 260 Return a new list of non-local rcpts in the rcpt_list
meillo@345 261 TODO: This function is almost exactly the same as local_rcpts(). Merge?
meillo@345 262 */
meillo@345 263 GList*
meillo@366 264 remote_rcpts(GList *rcpt_list)
meillo@345 265 {
meillo@345 266 GList *rcpt_node;
meillo@345 267 GList *remote_rcpts = NULL;
meillo@345 268 address *rcpt = NULL;
meillo@345 269
meillo@345 270 if (!rcpt_list) {
meillo@345 271 return NULL;
meillo@345 272 }
meillo@345 273 foreach(rcpt_list, rcpt_node) {
meillo@345 274 rcpt = (address *) (rcpt_node->data);
meillo@345 275 if (!addr_is_local(rcpt)) {
meillo@345 276 remote_rcpts = g_list_append(remote_rcpts, rcpt);
meillo@345 277 }
meillo@345 278 }
meillo@345 279 return remote_rcpts;
meillo@345 280 }
meillo@345 281
meillo@10 282 static gint
meillo@317 283 _g_list_addrcmp(gconstpointer pattern, gconstpointer addr)
meillo@0 284 {
meillo@317 285 int res;
meillo@366 286 address *patternaddr = (address*) pattern;
meillo@366 287 address *stringaddr = (address*) addr;
meillo@317 288
meillo@317 289 DEBUG(6) debugf("_g_list_addrcmp: pattern `%s' `%s' on string `%s' `%s'\n",
meillo@317 290 patternaddr->local_part, patternaddr->domain,
meillo@317 291 stringaddr->local_part, stringaddr->domain);
meillo@317 292 /* TODO: check if we should match here dependent on caseless_matching */
meillo@317 293 res = fnmatch(patternaddr->local_part, stringaddr->local_part, 0);
meillo@317 294 if (res != 0) {
meillo@317 295 DEBUG(6) debugf("_g_list_addrcmp: ... failed on local_part\n");
meillo@317 296 return res;
meillo@317 297 }
meillo@317 298 res = fnmatch(patternaddr->domain, stringaddr->domain, FNM_CASEFOLD);
meillo@317 299 DEBUG(6) debugf("_g_list_addrcmp: ... %s\n", (res==0) ? "matched" : "failed on domain");
meillo@317 300 return res;
meillo@0 301 }
meillo@0 302
meillo@10 303 gboolean
meillo@366 304 route_sender_is_allowed(connect_route *route, address *ret_path)
meillo@0 305 {
meillo@317 306 if (route->denied_senders && g_list_find_custom(route->denied_senders, ret_path, _g_list_addrcmp)) {
meillo@317 307 return FALSE;
meillo@10 308 }
meillo@317 309 if (route->allowed_senders) {
meillo@317 310 if (g_list_find_custom(route->allowed_senders, ret_path, _g_list_addrcmp)) {
meillo@10 311 return TRUE;
meillo@10 312 } else {
meillo@10 313 return FALSE;
meillo@10 314 }
meillo@10 315 }
meillo@10 316 return TRUE;
meillo@0 317 }
meillo@0 318
meillo@10 319 /*
meillo@0 320 Make lists of matching/not matching rcpts.
meillo@0 321 Local domains are NOT regared here, these should be sorted out previously
meillo@0 322 */
meillo@10 323 void
meillo@366 324 route_split_rcpts(connect_route *route, GList *rcpt_list, GList **p_rcpt_list, GList **p_non_rcpt_list)
meillo@0 325 {
meillo@10 326 GList *tmp_list = NULL;
meillo@10 327 /* sort out those domains that can be sent over this connection: */
meillo@317 328 if (route->allowed_recipients) {
meillo@317 329 DEBUG(5) debugf("testing for route->allowed_recipients\n");
meillo@317 330 split_rcpts(rcpt_list, route->allowed_recipients, NULL, &tmp_list, p_non_rcpt_list);
meillo@10 331 } else {
meillo@317 332 DEBUG(5) debugf("route->allowed_recipients == NULL\n");
meillo@10 333 tmp_list = g_list_copy(rcpt_list);
meillo@10 334 }
meillo@0 335
meillo@10 336 /* sort out those domains that cannot be sent over this connection: */
meillo@317 337 split_rcpts(tmp_list, route->denied_recipients, NULL, p_non_rcpt_list, p_rcpt_list);
meillo@10 338 g_list_free(tmp_list);
meillo@0 339 }
meillo@0 340
meillo@10 341 msg_out*
meillo@366 342 route_prepare_msgout(connect_route *route, msg_out *msgout)
meillo@0 343 {
meillo@10 344 message *msg = msgout->msg;
meillo@10 345 GList *rcpt_list = msgout->rcpt_list;
meillo@0 346
meillo@10 347 if (rcpt_list != NULL) {
meillo@10 348 /* found a few */
meillo@10 349 DEBUG(5) {
meillo@10 350 GList *node;
meillo@10 351 debugf("rcpts for routed delivery, route = %s, id = %s\n", route->name, msg->uid);
meillo@10 352 foreach(rcpt_list, node) {
meillo@10 353 address *rcpt = (address *) (node->data);
meillo@114 354 debugf(" rcpt for routed delivery: <%s@%s>\n",
meillo@114 355 rcpt->local_part, rcpt->domain);
meillo@10 356 }
meillo@10 357 }
meillo@0 358
meillo@15 359 /* rewrite return path if there is a table, use that
meillo@10 360 if an address is found and if it has a domain, use that
meillo@10 361 */
meillo@10 362 if (route->map_return_path_addresses) {
meillo@10 363 address *ret_path = NULL;
meillo@10 364 DEBUG(5) debugf("looking up %s in map_return_path_addresses\n", msg->return_path->local_part);
meillo@10 365 ret_path = (address *) table_find_fnmatch(route->map_return_path_addresses, msg->return_path->local_part);
meillo@10 366 if (ret_path) {
meillo@10 367 DEBUG(5) debugf("found <%s@%s>\n", ret_path->local_part, ret_path->domain);
meillo@10 368 if (ret_path->domain == NULL)
meillo@10 369 ret_path->domain = route->set_return_path_domain
meillo@10 370 ? route->set_return_path_domain
meillo@10 371 : msg->return_path->domain;
meillo@10 372 msgout->return_path = copy_address(ret_path);
meillo@10 373 }
meillo@10 374 }
meillo@10 375 if (msgout->return_path == NULL) {
meillo@10 376 DEBUG(5) debugf("setting return path to %s\n", route->set_return_path_domain);
meillo@10 377 msgout->return_path = copy_modify_address(msg->return_path, NULL, route->set_return_path_domain);
meillo@10 378 }
meillo@10 379 rewrite_headers(msgout, route);
meillo@10 380
meillo@10 381 return msgout;
meillo@10 382 }
meillo@10 383 return NULL;
meillo@0 384 }
meillo@0 385
meillo@0 386 /* put msgout's is msgout_list into bins (msgout_perhost structs) for each
meillo@0 387 host. Used if there is no mail_host.
meillo@0 388 route param is not used, we leave it here because that may change.
meillo@0 389 */
meillo@0 390
meillo@10 391 GList*
meillo@366 392 route_msgout_list(connect_route *route, GList *msgout_list)
meillo@0 393 {
meillo@10 394 GList *mo_ph_list = NULL;
meillo@10 395 GList *msgout_node;
meillo@0 396
meillo@10 397 foreach(msgout_list, msgout_node) {
meillo@10 398 msg_out *msgout = (msg_out *) (msgout_node->data);
meillo@10 399 msg_out *msgout_new;
meillo@10 400 GList *rcpt_list = msgout->rcpt_list;
meillo@10 401 GList *rcpt_node;
meillo@0 402
meillo@10 403 foreach(rcpt_list, rcpt_node) {
meillo@10 404 address *rcpt = rcpt_node->data;
meillo@10 405 msgout_perhost *mo_ph = NULL;
meillo@10 406 GList *mo_ph_node = NULL;
meillo@0 407
meillo@10 408 /* search host in mo_ph_list */
meillo@10 409 foreach(mo_ph_list, mo_ph_node) {
meillo@10 410 mo_ph = (msgout_perhost *) (mo_ph_node->data);
meillo@10 411 if (strcasecmp(mo_ph->host, rcpt->domain) == 0)
meillo@10 412 break;
meillo@10 413 }
meillo@10 414 if (mo_ph_node != NULL) {
meillo@10 415 /* there is already a rcpt for this host */
meillo@10 416 msg_out *msgout_last = (msg_out *) ((g_list_last(mo_ph->msgout_list))->data);
meillo@10 417 if (msgout_last->msg == msgout->msg) {
meillo@15 418 /* if it is also the same message, it must be the last one appended
meillo@15 419 to mo_ph->msgout_list (since outer loop goes through msgout_list) */
meillo@10 420 msgout_last->rcpt_list = g_list_append(msgout_last->rcpt_list, rcpt);
meillo@10 421 } else {
meillo@10 422 /* if not, we append a new msgout */
meillo@10 423 /* make a copy of msgout */
meillo@10 424 msgout_new = create_msg_out(msgout->msg);
meillo@10 425 msgout_new->return_path = msgout->return_path;
meillo@10 426 msgout_new->hdr_list = msgout->hdr_list;
meillo@0 427
meillo@10 428 /* append our rcpt to it */
meillo@10 429 /* It is the 1st rcpt for this msg to this host, therefore we safely give NULL */
meillo@10 430 msgout_new->rcpt_list = g_list_append(NULL, rcpt);
meillo@10 431 mo_ph->msgout_list = g_list_append(mo_ph->msgout_list, msgout_new);
meillo@10 432 }
meillo@10 433 } else {
meillo@10 434 /* this rcpt to goes to another host */
meillo@10 435 mo_ph = create_msgout_perhost(rcpt->domain);
meillo@10 436 mo_ph_list = g_list_append(mo_ph_list, mo_ph);
meillo@0 437
meillo@10 438 /* make a copy of msgout */
meillo@10 439 msgout_new = create_msg_out(msgout->msg);
meillo@10 440 msgout_new->return_path = msgout->return_path;
meillo@10 441 msgout_new->hdr_list = msgout->hdr_list;
meillo@0 442
meillo@10 443 /* append our rcpt to it */
meillo@10 444 /* It is the 1st rcpt for this msg to this host, therefore we safely give NULL */
meillo@10 445 msgout_new->rcpt_list = g_list_append(NULL, rcpt);
meillo@10 446 mo_ph->msgout_list = g_list_append(mo_ph->msgout_list, msgout_new);
meillo@10 447 } /* if mo_ph != NULL */
meillo@10 448 } /* foreach(rcpt_list, ... */
meillo@10 449 } /* foreach(msgout_list, ... */
meillo@10 450
meillo@10 451 return mo_ph_list;
meillo@0 452 }