masqmail-0.2

annotate src/route.c @ 80:e5090ac234cf

find changesets by author, revision, files, or words in the commit message
refactoring plus one small bugfix replaced deep nested conditionals with early exits fixed a small bug in the same go (Note: it is bad to fix bugs during refactoring): The SMTP_HELO case did not break in case of error. Now it does.
author meillo@marmaro.de
date Sat, 19 Jun 2010 11:11:28 +0200
parents 26e34ae9a3e3
children a80ebfa16cd5
rev   line source
meillo@0 1 /* MasqMail
meillo@0 2 Copyright (C) 1999-2001 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
meillo@15 19 #include <fnmatch.h>
meillo@15 20
meillo@0 21 #include "masqmail.h"
meillo@0 22
meillo@10 23 msgout_perhost*
meillo@10 24 create_msgout_perhost(gchar * host)
meillo@0 25 {
meillo@10 26 msgout_perhost *mo_ph = g_malloc(sizeof(msgout_perhost));
meillo@10 27 if (mo_ph) {
meillo@10 28 mo_ph->host = g_strdup(host);
meillo@10 29 mo_ph->msgout_list = NULL;
meillo@10 30 }
meillo@10 31 return mo_ph;
meillo@0 32 }
meillo@0 33
meillo@10 34 void
meillo@10 35 destroy_msgout_perhost(msgout_perhost * mo_ph)
meillo@0 36 {
meillo@10 37 GList *mo_node;
meillo@0 38
meillo@10 39 foreach(mo_ph->msgout_list, mo_node) {
meillo@10 40 msg_out *mo = (msg_out *) (mo_node->data);
meillo@10 41 /* the rcpt_list is owned by the msgout's, but not the rcpt's themselves */
meillo@10 42 g_list_free(mo->rcpt_list);
meillo@10 43 g_free(mo);
meillo@10 44 }
meillo@10 45 g_list_free(mo_ph->msgout_list);
meillo@10 46 g_free(mo_ph);
meillo@0 47 }
meillo@0 48
meillo@10 49 void
meillo@10 50 rewrite_headers(msg_out * msgout, connect_route * route)
meillo@0 51 {
meillo@10 52 /* if set_h_from_domain is set, replace domain in all
meillo@10 53 From: headers.
meillo@10 54 */
meillo@10 55 msgout->hdr_list = g_list_copy(msgout->msg->hdr_list);
meillo@0 56
meillo@10 57 /* map from addresses */
meillo@10 58 if (route->map_h_from_addresses != NULL) {
meillo@10 59 GList *hdr_node;
meillo@10 60 foreach(msgout->hdr_list, hdr_node) {
meillo@10 61 header *hdr = (header *) (hdr_node->data);
meillo@10 62 if (hdr->id == HEAD_FROM) {
meillo@10 63 header *new_hdr = copy_header(hdr);
meillo@10 64 if (map_address_header(new_hdr, route->map_h_from_addresses)) {
meillo@10 65 hdr_node->data = new_hdr;
meillo@10 66 /* we need this list only to carefully free the extra headers: */
meillo@10 67 msgout->xtra_hdr_list = g_list_append(msgout->xtra_hdr_list, new_hdr);
meillo@10 68 } else
meillo@10 69 g_free(new_hdr);
meillo@10 70 }
meillo@10 71 }
meillo@10 72 } else {
meillo@10 73 /* replace from domain */
meillo@10 74 if (route->set_h_from_domain != NULL) {
meillo@10 75 GList *hdr_node;
meillo@10 76
meillo@10 77 foreach(msgout->hdr_list, hdr_node) {
meillo@10 78 header *hdr = (header *) (hdr_node->data);
meillo@10 79 if (hdr->id == HEAD_FROM) {
meillo@10 80 header *new_hdr = copy_header(hdr);
meillo@10 81
meillo@10 82 DEBUG(5) debugf("setting From: domain to %s\n", route->set_h_from_domain);
meillo@10 83 if (set_address_header_domain(new_hdr, route->set_h_from_domain)) {
meillo@10 84 hdr_node->data = new_hdr;
meillo@10 85 /* we need this list only to carefully free the extra headers: */
meillo@10 86 DEBUG(6) debugf("header = %s\n", new_hdr->header);
meillo@10 87 msgout->xtra_hdr_list = g_list_append(msgout->xtra_hdr_list, new_hdr);
meillo@10 88 } else {
meillo@15 89 logwrite(LOG_ALERT, "error in set_address_header_domain(%s, %s)\n",
meillo@15 90 new_hdr->value, route->set_h_from_domain);
meillo@10 91 }
meillo@10 92 }
meillo@10 93 }
meillo@10 94 }
meillo@0 95 }
meillo@0 96
meillo@10 97 /* map reply-to addresses */
meillo@10 98 if (route->map_h_reply_to_addresses != NULL) {
meillo@10 99 GList *hdr_node;
meillo@10 100 foreach(msgout->hdr_list, hdr_node) {
meillo@10 101 header *hdr = (header *) (hdr_node->data);
meillo@10 102 if (hdr->id == HEAD_REPLY_TO) {
meillo@10 103 header *new_hdr = copy_header(hdr);
meillo@10 104 if (map_address_header
meillo@10 105 (new_hdr, route->map_h_reply_to_addresses)) {
meillo@10 106 hdr_node->data = new_hdr;
meillo@10 107 /* we need this list only to carefully free the extra headers: */
meillo@10 108 msgout->xtra_hdr_list = g_list_append(msgout->xtra_hdr_list, new_hdr);
meillo@10 109 } else
meillo@10 110 g_free(new_hdr);
meillo@10 111 }
meillo@10 112 }
meillo@10 113 } else {
meillo@10 114 /* replace Reply-to domain */
meillo@10 115 if (route->set_h_reply_to_domain != NULL) {
meillo@10 116 GList *hdr_node;
meillo@10 117
meillo@10 118 foreach(msgout->hdr_list, hdr_node) {
meillo@10 119 header *hdr = (header *) (hdr_node->data);
meillo@10 120 if (hdr->id == HEAD_REPLY_TO) {
meillo@10 121 header *new_hdr = copy_header(hdr);
meillo@10 122
meillo@10 123 set_address_header_domain(new_hdr, route-> set_h_reply_to_domain);
meillo@10 124 hdr_node->data = new_hdr;
meillo@10 125 /* we need this list only to carefully free the extra headers: */
meillo@10 126 msgout->xtra_hdr_list = g_list_append(msgout->xtra_hdr_list, new_hdr);
meillo@10 127 }
meillo@10 128 }
meillo@10 129 }
meillo@0 130 }
meillo@0 131
meillo@10 132 /* map Mail-Followup-To addresses */
meillo@10 133 if (route->map_h_mail_followup_to_addresses != NULL) {
meillo@10 134 GList *hdr_node;
meillo@10 135 foreach(msgout->hdr_list, hdr_node) {
meillo@10 136 header *hdr = (header *) (hdr_node->data);
meillo@10 137 if (strncasecmp(hdr->header, "Mail-Followup-To", 16) == 0) {
meillo@10 138 header *new_hdr = copy_header(hdr);
meillo@10 139 if (map_address_header(new_hdr, route->map_h_mail_followup_to_addresses)) {
meillo@10 140 hdr_node->data = new_hdr;
meillo@10 141 /* we need this list only to carefully free the extra headers: */
meillo@10 142 msgout->xtra_hdr_list = g_list_append(msgout->xtra_hdr_list, new_hdr);
meillo@10 143 } else
meillo@10 144 g_free(new_hdr);
meillo@10 145 }
meillo@10 146 }
meillo@10 147 }
meillo@0 148
meillo@10 149 /* set Sender: domain to return_path->domain */
meillo@10 150 if (route->expand_h_sender_domain) {
meillo@10 151 GList *hdr_node;
meillo@0 152
meillo@10 153 foreach(msgout->hdr_list, hdr_node) {
meillo@10 154 header *hdr = (header *) (hdr_node->data);
meillo@10 155 if (hdr->id == HEAD_SENDER) {
meillo@10 156 header *new_hdr = copy_header(hdr);
meillo@0 157
meillo@10 158 set_address_header_domain(new_hdr, msgout->return_path->domain);
meillo@10 159 hdr_node->data = new_hdr;
meillo@10 160 /* we need this list only to carefully free the extra headers: */
meillo@10 161 msgout->xtra_hdr_list = g_list_append(msgout->xtra_hdr_list, new_hdr);
meillo@10 162 }
meillo@10 163 }
meillo@10 164 }
meillo@0 165
meillo@10 166 /* set Sender: domain to return_path->domain */
meillo@10 167 if (route->expand_h_sender_address) {
meillo@10 168 GList *hdr_node;
meillo@0 169
meillo@10 170 foreach(msgout->hdr_list, hdr_node) {
meillo@10 171 header *hdr = (header *) (hdr_node->data);
meillo@10 172 if (hdr->id == HEAD_SENDER) {
meillo@10 173 header *new_hdr;
meillo@0 174
meillo@15 175 new_hdr = create_header(HEAD_SENDER, "Sender: %s@%s\n",
meillo@15 176 msgout->return_path->local_part, msgout->return_path->domain);
meillo@10 177 hdr_node->data = new_hdr;
meillo@10 178 /* we need this list only to carefully free the extra headers: */
meillo@10 179 msgout->xtra_hdr_list = g_list_append(msgout->xtra_hdr_list, new_hdr);
meillo@10 180 }
meillo@10 181 }
meillo@10 182 }
meillo@0 183
meillo@10 184 if (msgout->xtra_hdr_list == NULL) {
meillo@10 185 /* nothing was changed */
meillo@10 186 g_list_free(msgout->hdr_list);
meillo@10 187 msgout->hdr_list = NULL;
meillo@10 188 }
meillo@10 189 DEBUG(5) debugf("rewrite_headers() returning\n");
meillo@0 190 }
meillo@0 191
meillo@10 192 void
meillo@10 193 rcptlist_with_one_of_hostlist(GList * rcpt_list, GList * host_list, GList ** p_rcpt_list, GList ** p_non_rcpt_list)
meillo@0 194 {
meillo@10 195 GList *rcpt_node;
meillo@0 196
meillo@10 197 if (rcpt_list == NULL)
meillo@10 198 return;
meillo@0 199
meillo@10 200 foreach(rcpt_list, rcpt_node) {
meillo@10 201 address *rcpt = (address *) (rcpt_node->data);
meillo@10 202 GList *host_node = NULL;
meillo@0 203
meillo@10 204 foreach(host_list, host_node) {
meillo@10 205 gchar *host = (gchar *) (host_node->data);
meillo@10 206 if (fnmatch(host, rcpt->domain, FNM_CASEFOLD) == 0)
meillo@10 207 break;
meillo@10 208 }
meillo@10 209 if (host_node) {
meillo@10 210 if (p_rcpt_list)
meillo@10 211 *p_rcpt_list = g_list_append(*p_rcpt_list, rcpt);
meillo@10 212 } else {
meillo@10 213 if (p_non_rcpt_list)
meillo@10 214 *p_non_rcpt_list = g_list_append(*p_non_rcpt_list, rcpt);
meillo@10 215 }
meillo@0 216
meillo@10 217 }
meillo@0 218 }
meillo@0 219
meillo@10 220 void
meillo@10 221 rcptlist_with_addr_is_local(GList * rcpt_list, GList ** p_rcpt_list, GList ** p_non_rcpt_list)
meillo@0 222 {
meillo@10 223 GList *rcpt_node;
meillo@0 224
meillo@10 225 if (rcpt_list == NULL)
meillo@10 226 return;
meillo@0 227
meillo@10 228 foreach(rcpt_list, rcpt_node) {
meillo@10 229 address *rcpt = (address *) (rcpt_node->data);
meillo@10 230 if (addr_is_local(rcpt)) {
meillo@10 231 if (p_rcpt_list)
meillo@10 232 *p_rcpt_list = g_list_append(*p_rcpt_list, rcpt);
meillo@10 233 } else {
meillo@10 234 if (p_non_rcpt_list)
meillo@10 235 *p_non_rcpt_list = g_list_append(*p_non_rcpt_list, rcpt);
meillo@10 236 }
meillo@0 237
meillo@10 238 }
meillo@0 239 }
meillo@0 240
meillo@10 241 static gint
meillo@10 242 _g_list_addrcmp(gconstpointer a, gconstpointer b)
meillo@0 243 {
meillo@10 244 return addr_match((address *) a, (address *) b);
meillo@0 245 }
meillo@0 246
meillo@10 247 gboolean
meillo@10 248 route_is_allowed_return_path(connect_route * route, address * ret_path)
meillo@0 249 {
meillo@10 250 if (route->not_allowed_return_paths != NULL) {
meillo@10 251 if (g_list_find_custom(route->not_allowed_return_paths, ret_path, _g_list_addrcmp) != NULL) {
meillo@10 252 return FALSE;
meillo@10 253 }
meillo@10 254 }
meillo@10 255 if (route->allowed_return_paths != NULL) {
meillo@10 256 if (g_list_find_custom(route->allowed_return_paths, ret_path, _g_list_addrcmp) != NULL) {
meillo@10 257 return TRUE;
meillo@10 258 } else {
meillo@10 259 return FALSE;
meillo@10 260 }
meillo@10 261 }
meillo@10 262 return TRUE;
meillo@0 263 }
meillo@0 264
meillo@10 265 static gint
meillo@10 266 _g_list_strcmp(gconstpointer a, gconstpointer b)
meillo@0 267 {
meillo@10 268 return (gint) strcmp(a, b);
meillo@0 269 }
meillo@0 270
meillo@10 271 gboolean
meillo@10 272 route_is_allowed_mail_local(connect_route * route, address * ret_path)
meillo@0 273 {
meillo@10 274 gchar *loc_part = ret_path->local_part;
meillo@0 275
meillo@10 276 if (route->not_allowed_mail_locals != NULL) {
meillo@10 277 if (g_list_find_custom(route->not_allowed_mail_locals, loc_part, _g_list_strcmp) != NULL)
meillo@10 278 return FALSE;
meillo@10 279 }
meillo@10 280 if (route->allowed_mail_locals != NULL) {
meillo@10 281 if (g_list_find_custom(route->allowed_mail_locals, loc_part, _g_list_strcmp) != NULL)
meillo@10 282 return TRUE;
meillo@10 283 else
meillo@10 284 return FALSE;
meillo@10 285 }
meillo@10 286 return TRUE;
meillo@0 287 }
meillo@0 288
meillo@10 289 /*
meillo@0 290 Make lists of matching/not matching rcpts.
meillo@0 291 Local domains are NOT regared here, these should be sorted out previously
meillo@0 292 */
meillo@10 293 void
meillo@10 294 msg_rcptlist_route(connect_route * route, GList * rcpt_list, GList ** p_rcpt_list, GList ** p_non_rcpt_list)
meillo@0 295 {
meillo@10 296 GList *tmp_list = NULL;
meillo@10 297 /* sort out those domains that can be sent over this connection: */
meillo@10 298 if (route->allowed_rcpt_domains) {
meillo@10 299 DEBUG(5) debugf("testing for route->allowed_rcpt_domains\n");
meillo@10 300 rcptlist_with_one_of_hostlist(rcpt_list, route->allowed_rcpt_domains, &tmp_list, p_non_rcpt_list);
meillo@10 301 } else {
meillo@10 302 DEBUG(5) debugf("route->allowed_rcpt_domains == NULL\n");
meillo@10 303 tmp_list = g_list_copy(rcpt_list);
meillo@10 304 }
meillo@0 305
meillo@10 306 /* sort out those domains that cannot be sent over this connection: */
meillo@10 307 rcptlist_with_one_of_hostlist(tmp_list, route->not_allowed_rcpt_domains, p_non_rcpt_list, p_rcpt_list);
meillo@10 308 g_list_free(tmp_list);
meillo@0 309 }
meillo@0 310
meillo@10 311 msg_out*
meillo@10 312 route_prepare_msgout(connect_route * route, msg_out * msgout)
meillo@0 313 {
meillo@10 314 message *msg = msgout->msg;
meillo@10 315 GList *rcpt_list = msgout->rcpt_list;
meillo@0 316
meillo@10 317 if (rcpt_list != NULL) {
meillo@10 318 /* found a few */
meillo@10 319 DEBUG(5) {
meillo@10 320 GList *node;
meillo@10 321 debugf("rcpts for routed delivery, route = %s, id = %s\n", route->name, msg->uid);
meillo@10 322 foreach(rcpt_list, node) {
meillo@10 323 address *rcpt = (address *) (node->data);
meillo@10 324 debugf("rcpt for routed delivery: <%s@%s>\n", rcpt->local_part, rcpt->domain);
meillo@10 325 }
meillo@10 326 }
meillo@0 327
meillo@15 328 /* rewrite return path if there is a table, use that
meillo@10 329 if an address is found and if it has a domain, use that
meillo@10 330 */
meillo@10 331 if (route->map_return_path_addresses) {
meillo@10 332 address *ret_path = NULL;
meillo@10 333 DEBUG(5) debugf("looking up %s in map_return_path_addresses\n", msg->return_path->local_part);
meillo@10 334 ret_path = (address *) table_find_fnmatch(route->map_return_path_addresses, msg->return_path->local_part);
meillo@10 335 if (ret_path) {
meillo@10 336 DEBUG(5) debugf("found <%s@%s>\n", ret_path->local_part, ret_path->domain);
meillo@10 337 if (ret_path->domain == NULL)
meillo@10 338 ret_path->domain = route->set_return_path_domain
meillo@10 339 ? route->set_return_path_domain
meillo@10 340 : msg->return_path->domain;
meillo@10 341 msgout->return_path = copy_address(ret_path);
meillo@10 342 }
meillo@10 343 }
meillo@10 344 if (msgout->return_path == NULL) {
meillo@10 345 DEBUG(5) debugf("setting return path to %s\n", route->set_return_path_domain);
meillo@10 346 msgout->return_path = copy_modify_address(msg->return_path, NULL, route->set_return_path_domain);
meillo@10 347 }
meillo@10 348 rewrite_headers(msgout, route);
meillo@10 349
meillo@10 350 return msgout;
meillo@10 351 }
meillo@10 352 return NULL;
meillo@0 353 }
meillo@0 354
meillo@0 355 /* put msgout's is msgout_list into bins (msgout_perhost structs) for each
meillo@0 356 host. Used if there is no mail_host.
meillo@0 357 route param is not used, we leave it here because that may change.
meillo@0 358 */
meillo@0 359
meillo@10 360 GList*
meillo@10 361 route_msgout_list(connect_route * route, GList * msgout_list)
meillo@0 362 {
meillo@10 363 GList *mo_ph_list = NULL;
meillo@10 364 GList *msgout_node;
meillo@0 365
meillo@10 366 foreach(msgout_list, msgout_node) {
meillo@10 367 msg_out *msgout = (msg_out *) (msgout_node->data);
meillo@10 368 msg_out *msgout_new;
meillo@10 369 GList *rcpt_list = msgout->rcpt_list;
meillo@10 370 GList *rcpt_node;
meillo@0 371
meillo@10 372 foreach(rcpt_list, rcpt_node) {
meillo@10 373 address *rcpt = rcpt_node->data;
meillo@10 374 msgout_perhost *mo_ph = NULL;
meillo@10 375 GList *mo_ph_node = NULL;
meillo@0 376
meillo@10 377 /* search host in mo_ph_list */
meillo@10 378 foreach(mo_ph_list, mo_ph_node) {
meillo@10 379 mo_ph = (msgout_perhost *) (mo_ph_node->data);
meillo@10 380 if (strcasecmp(mo_ph->host, rcpt->domain) == 0)
meillo@10 381 break;
meillo@10 382 }
meillo@10 383 if (mo_ph_node != NULL) {
meillo@10 384 /* there is already a rcpt for this host */
meillo@10 385 msg_out *msgout_last = (msg_out *) ((g_list_last(mo_ph->msgout_list))->data);
meillo@10 386 if (msgout_last->msg == msgout->msg) {
meillo@15 387 /* if it is also the same message, it must be the last one appended
meillo@15 388 to mo_ph->msgout_list (since outer loop goes through msgout_list) */
meillo@10 389 msgout_last->rcpt_list = g_list_append(msgout_last->rcpt_list, rcpt);
meillo@10 390 } else {
meillo@10 391 /* if not, we append a new msgout */
meillo@10 392 /* make a copy of msgout */
meillo@10 393 msgout_new = create_msg_out(msgout->msg);
meillo@10 394 msgout_new->return_path = msgout->return_path;
meillo@10 395 msgout_new->hdr_list = msgout->hdr_list;
meillo@0 396
meillo@10 397 /* append our rcpt to it */
meillo@10 398 /* It is the 1st rcpt for this msg to this host, therefore we safely give NULL */
meillo@10 399 msgout_new->rcpt_list = g_list_append(NULL, rcpt);
meillo@10 400 mo_ph->msgout_list = g_list_append(mo_ph->msgout_list, msgout_new);
meillo@10 401 }
meillo@10 402 } else {
meillo@10 403 /* this rcpt to goes to another host */
meillo@10 404 mo_ph = create_msgout_perhost(rcpt->domain);
meillo@10 405 mo_ph_list = g_list_append(mo_ph_list, mo_ph);
meillo@0 406
meillo@10 407 /* make a copy of msgout */
meillo@10 408 msgout_new = create_msg_out(msgout->msg);
meillo@10 409 msgout_new->return_path = msgout->return_path;
meillo@10 410 msgout_new->hdr_list = msgout->hdr_list;
meillo@0 411
meillo@10 412 /* append our rcpt to it */
meillo@10 413 /* It is the 1st rcpt for this msg to this host, therefore we safely give NULL */
meillo@10 414 msgout_new->rcpt_list = g_list_append(NULL, rcpt);
meillo@10 415 mo_ph->msgout_list = g_list_append(mo_ph->msgout_list, msgout_new);
meillo@10 416 } /* if mo_ph != NULL */
meillo@10 417 } /* foreach(rcpt_list, ... */
meillo@10 418 } /* foreach(msgout_list, ... */
meillo@10 419
meillo@10 420 return mo_ph_list;
meillo@0 421 }