masqmail

annotate src/route.c @ 332:63efd381e27b

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refactoring, partly also related to set_euidgid()
author markus schnalke <meillo@marmaro.de>
date Sat, 27 Aug 2011 16:21:17 +0200
parents 87df0aa99cc7
children 257ffce6c1cd
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@10 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@10 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@10 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@237 196 - local net recipients
meillo@237 197 - other/remote/online recipients
meillo@237 198 It should be possible to call the function like:
meillo@237 199 split_rcpts(rcpts, hostlist, local, others, others);
meillo@237 200 This would split online between local and localnet+online recipients.
meillo@237 201 (untested yet; remove this line if you saw it worked -- meillo 2010-10-21)
meillo@237 202 If host_list is NULL, only splitting between local and other is done.
meillo@237 203 */
meillo@10 204 void
meillo@237 205 split_rcpts(GList* rcpt_list, GList* localnets, GList** rl_local, GList** rl_localnet, GList** rl_others)
meillo@0 206 {
meillo@10 207 GList *rcpt_node;
meillo@237 208 GList *host_node = NULL;
meillo@237 209 address *rcpt = NULL;
meillo@0 210
meillo@10 211 if (rcpt_list == NULL)
meillo@10 212 return;
meillo@0 213
meillo@10 214 foreach(rcpt_list, rcpt_node) {
meillo@237 215 rcpt = (address *) (rcpt_node->data);
meillo@237 216 host_node = NULL;
meillo@0 217
meillo@237 218 if (addr_is_local(rcpt)) {
meillo@237 219 if (rl_local)
meillo@237 220 *rl_local = g_list_append(*rl_local, rcpt);
meillo@237 221 } else {
meillo@237 222 /* if localnets is NULL, host_node will be NULL,
meillo@237 223 hence all non-locals are put to others */
meillo@237 224 foreach(localnets, host_node) {
meillo@237 225 gchar *host = (gchar *) (host_node->data);
meillo@237 226 if (fnmatch(host, rcpt->domain, FNM_CASEFOLD) == 0)
meillo@237 227 break;
meillo@237 228 }
meillo@237 229 if (host_node) {
meillo@237 230 if (rl_localnet)
meillo@237 231 *rl_localnet = g_list_append(*rl_localnet, rcpt);
meillo@237 232 } else {
meillo@237 233 if (rl_others)
meillo@237 234 *rl_others = g_list_append(*rl_others, rcpt);
meillo@237 235 }
meillo@10 236 }
meillo@10 237 }
meillo@0 238 }
meillo@0 239
meillo@10 240 static gint
meillo@317 241 _g_list_addrcmp(gconstpointer pattern, gconstpointer addr)
meillo@0 242 {
meillo@317 243 int res;
meillo@317 244 address* patternaddr = (address*) pattern;
meillo@317 245 address* stringaddr = (address*) addr;
meillo@317 246
meillo@317 247 DEBUG(6) debugf("_g_list_addrcmp: pattern `%s' `%s' on string `%s' `%s'\n",
meillo@317 248 patternaddr->local_part, patternaddr->domain,
meillo@317 249 stringaddr->local_part, stringaddr->domain);
meillo@317 250 /* TODO: check if we should match here dependent on caseless_matching */
meillo@317 251 res = fnmatch(patternaddr->local_part, stringaddr->local_part, 0);
meillo@317 252 if (res != 0) {
meillo@317 253 DEBUG(6) debugf("_g_list_addrcmp: ... failed on local_part\n");
meillo@317 254 return res;
meillo@317 255 }
meillo@317 256 res = fnmatch(patternaddr->domain, stringaddr->domain, FNM_CASEFOLD);
meillo@317 257 DEBUG(6) debugf("_g_list_addrcmp: ... %s\n", (res==0) ? "matched" : "failed on domain");
meillo@317 258 return res;
meillo@0 259 }
meillo@0 260
meillo@10 261 gboolean
meillo@317 262 route_sender_is_allowed(connect_route * route, address * ret_path)
meillo@0 263 {
meillo@317 264 if (route->denied_senders && g_list_find_custom(route->denied_senders, ret_path, _g_list_addrcmp)) {
meillo@317 265 return FALSE;
meillo@10 266 }
meillo@317 267 if (route->allowed_senders) {
meillo@317 268 if (g_list_find_custom(route->allowed_senders, ret_path, _g_list_addrcmp)) {
meillo@10 269 return TRUE;
meillo@10 270 } else {
meillo@10 271 return FALSE;
meillo@10 272 }
meillo@10 273 }
meillo@10 274 return TRUE;
meillo@0 275 }
meillo@0 276
meillo@10 277 /*
meillo@0 278 Make lists of matching/not matching rcpts.
meillo@0 279 Local domains are NOT regared here, these should be sorted out previously
meillo@0 280 */
meillo@10 281 void
meillo@317 282 route_split_rcpts(connect_route * route, GList * rcpt_list, GList ** p_rcpt_list, GList ** p_non_rcpt_list)
meillo@0 283 {
meillo@10 284 GList *tmp_list = NULL;
meillo@10 285 /* sort out those domains that can be sent over this connection: */
meillo@317 286 if (route->allowed_recipients) {
meillo@317 287 DEBUG(5) debugf("testing for route->allowed_recipients\n");
meillo@317 288 split_rcpts(rcpt_list, route->allowed_recipients, NULL, &tmp_list, p_non_rcpt_list);
meillo@10 289 } else {
meillo@317 290 DEBUG(5) debugf("route->allowed_recipients == NULL\n");
meillo@10 291 tmp_list = g_list_copy(rcpt_list);
meillo@10 292 }
meillo@0 293
meillo@10 294 /* sort out those domains that cannot be sent over this connection: */
meillo@317 295 split_rcpts(tmp_list, route->denied_recipients, NULL, p_non_rcpt_list, p_rcpt_list);
meillo@10 296 g_list_free(tmp_list);
meillo@0 297 }
meillo@0 298
meillo@10 299 msg_out*
meillo@10 300 route_prepare_msgout(connect_route * route, msg_out * msgout)
meillo@0 301 {
meillo@10 302 message *msg = msgout->msg;
meillo@10 303 GList *rcpt_list = msgout->rcpt_list;
meillo@0 304
meillo@10 305 if (rcpt_list != NULL) {
meillo@10 306 /* found a few */
meillo@10 307 DEBUG(5) {
meillo@10 308 GList *node;
meillo@10 309 debugf("rcpts for routed delivery, route = %s, id = %s\n", route->name, msg->uid);
meillo@10 310 foreach(rcpt_list, node) {
meillo@10 311 address *rcpt = (address *) (node->data);
meillo@114 312 debugf(" rcpt for routed delivery: <%s@%s>\n",
meillo@114 313 rcpt->local_part, rcpt->domain);
meillo@10 314 }
meillo@10 315 }
meillo@0 316
meillo@15 317 /* rewrite return path if there is a table, use that
meillo@10 318 if an address is found and if it has a domain, use that
meillo@10 319 */
meillo@10 320 if (route->map_return_path_addresses) {
meillo@10 321 address *ret_path = NULL;
meillo@10 322 DEBUG(5) debugf("looking up %s in map_return_path_addresses\n", msg->return_path->local_part);
meillo@10 323 ret_path = (address *) table_find_fnmatch(route->map_return_path_addresses, msg->return_path->local_part);
meillo@10 324 if (ret_path) {
meillo@10 325 DEBUG(5) debugf("found <%s@%s>\n", ret_path->local_part, ret_path->domain);
meillo@10 326 if (ret_path->domain == NULL)
meillo@10 327 ret_path->domain = route->set_return_path_domain
meillo@10 328 ? route->set_return_path_domain
meillo@10 329 : msg->return_path->domain;
meillo@10 330 msgout->return_path = copy_address(ret_path);
meillo@10 331 }
meillo@10 332 }
meillo@10 333 if (msgout->return_path == NULL) {
meillo@10 334 DEBUG(5) debugf("setting return path to %s\n", route->set_return_path_domain);
meillo@10 335 msgout->return_path = copy_modify_address(msg->return_path, NULL, route->set_return_path_domain);
meillo@10 336 }
meillo@10 337 rewrite_headers(msgout, route);
meillo@10 338
meillo@10 339 return msgout;
meillo@10 340 }
meillo@10 341 return NULL;
meillo@0 342 }
meillo@0 343
meillo@0 344 /* put msgout's is msgout_list into bins (msgout_perhost structs) for each
meillo@0 345 host. Used if there is no mail_host.
meillo@0 346 route param is not used, we leave it here because that may change.
meillo@0 347 */
meillo@0 348
meillo@10 349 GList*
meillo@10 350 route_msgout_list(connect_route * route, GList * msgout_list)
meillo@0 351 {
meillo@10 352 GList *mo_ph_list = NULL;
meillo@10 353 GList *msgout_node;
meillo@0 354
meillo@10 355 foreach(msgout_list, msgout_node) {
meillo@10 356 msg_out *msgout = (msg_out *) (msgout_node->data);
meillo@10 357 msg_out *msgout_new;
meillo@10 358 GList *rcpt_list = msgout->rcpt_list;
meillo@10 359 GList *rcpt_node;
meillo@0 360
meillo@10 361 foreach(rcpt_list, rcpt_node) {
meillo@10 362 address *rcpt = rcpt_node->data;
meillo@10 363 msgout_perhost *mo_ph = NULL;
meillo@10 364 GList *mo_ph_node = NULL;
meillo@0 365
meillo@10 366 /* search host in mo_ph_list */
meillo@10 367 foreach(mo_ph_list, mo_ph_node) {
meillo@10 368 mo_ph = (msgout_perhost *) (mo_ph_node->data);
meillo@10 369 if (strcasecmp(mo_ph->host, rcpt->domain) == 0)
meillo@10 370 break;
meillo@10 371 }
meillo@10 372 if (mo_ph_node != NULL) {
meillo@10 373 /* there is already a rcpt for this host */
meillo@10 374 msg_out *msgout_last = (msg_out *) ((g_list_last(mo_ph->msgout_list))->data);
meillo@10 375 if (msgout_last->msg == msgout->msg) {
meillo@15 376 /* if it is also the same message, it must be the last one appended
meillo@15 377 to mo_ph->msgout_list (since outer loop goes through msgout_list) */
meillo@10 378 msgout_last->rcpt_list = g_list_append(msgout_last->rcpt_list, rcpt);
meillo@10 379 } else {
meillo@10 380 /* if not, we append a new msgout */
meillo@10 381 /* make a copy of msgout */
meillo@10 382 msgout_new = create_msg_out(msgout->msg);
meillo@10 383 msgout_new->return_path = msgout->return_path;
meillo@10 384 msgout_new->hdr_list = msgout->hdr_list;
meillo@0 385
meillo@10 386 /* append our rcpt to it */
meillo@10 387 /* It is the 1st rcpt for this msg to this host, therefore we safely give NULL */
meillo@10 388 msgout_new->rcpt_list = g_list_append(NULL, rcpt);
meillo@10 389 mo_ph->msgout_list = g_list_append(mo_ph->msgout_list, msgout_new);
meillo@10 390 }
meillo@10 391 } else {
meillo@10 392 /* this rcpt to goes to another host */
meillo@10 393 mo_ph = create_msgout_perhost(rcpt->domain);
meillo@10 394 mo_ph_list = g_list_append(mo_ph_list, mo_ph);
meillo@0 395
meillo@10 396 /* make a copy of msgout */
meillo@10 397 msgout_new = create_msg_out(msgout->msg);
meillo@10 398 msgout_new->return_path = msgout->return_path;
meillo@10 399 msgout_new->hdr_list = msgout->hdr_list;
meillo@0 400
meillo@10 401 /* append our rcpt to it */
meillo@10 402 /* It is the 1st rcpt for this msg to this host, therefore we safely give NULL */
meillo@10 403 msgout_new->rcpt_list = g_list_append(NULL, rcpt);
meillo@10 404 mo_ph->msgout_list = g_list_append(mo_ph->msgout_list, msgout_new);
meillo@10 405 } /* if mo_ph != NULL */
meillo@10 406 } /* foreach(rcpt_list, ... */
meillo@10 407 } /* foreach(msgout_list, ... */
meillo@10 408
meillo@10 409 return mo_ph_list;
meillo@0 410 }