1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
5 /* Copyright (c) University of Cambridge 1995 - 2015 */
6 /* See the file NOTICE for conditions of use and distribution. */
10 #include "rf_functions.h"
15 /* Options specific to the redirect router. */
17 optionlist redirect_router_options[] = {
18 { "allow_defer", opt_bit | (RDON_DEFER << 16),
19 (void *)offsetof(redirect_router_options_block, bit_options) },
20 { "allow_fail", opt_bit | (RDON_FAIL << 16),
21 (void *)offsetof(redirect_router_options_block, bit_options) },
22 { "allow_filter", opt_bit | (RDON_FILTER << 16),
23 (void *)offsetof(redirect_router_options_block, bit_options) },
24 { "allow_freeze", opt_bit | (RDON_FREEZE << 16),
25 (void *)offsetof(redirect_router_options_block, bit_options) },
26 { "check_ancestor", opt_bool,
27 (void *)offsetof(redirect_router_options_block, check_ancestor) },
28 { "check_group", opt_bool,
29 (void *)offsetof(redirect_router_options_block, check_group) },
30 { "check_owner", opt_bool,
31 (void *)offsetof(redirect_router_options_block, check_owner) },
32 { "data", opt_stringptr,
33 (void *)offsetof(redirect_router_options_block, data) },
34 { "directory_transport",opt_stringptr,
35 (void *)offsetof(redirect_router_options_block, directory_transport_name) },
36 { "file", opt_stringptr,
37 (void *)offsetof(redirect_router_options_block, file) },
38 { "file_transport", opt_stringptr,
39 (void *)offsetof(redirect_router_options_block, file_transport_name) },
40 { "filter_prepend_home",opt_bit | (RDON_PREPEND_HOME << 16),
41 (void *)offsetof(redirect_router_options_block, bit_options) },
42 { "forbid_blackhole", opt_bit | (RDON_BLACKHOLE << 16),
43 (void *)offsetof(redirect_router_options_block, bit_options) },
44 { "forbid_exim_filter", opt_bit | (RDON_EXIM_FILTER << 16),
45 (void *)offsetof(redirect_router_options_block, bit_options) },
46 { "forbid_file", opt_bool,
47 (void *)offsetof(redirect_router_options_block, forbid_file) },
48 { "forbid_filter_dlfunc", opt_bit | (RDON_DLFUNC << 16),
49 (void *)offsetof(redirect_router_options_block, bit_options) },
50 { "forbid_filter_existstest", opt_bit | (RDON_EXISTS << 16),
51 (void *)offsetof(redirect_router_options_block, bit_options) },
52 { "forbid_filter_logwrite",opt_bit | (RDON_LOG << 16),
53 (void *)offsetof(redirect_router_options_block, bit_options) },
54 { "forbid_filter_lookup", opt_bit | (RDON_LOOKUP << 16),
55 (void *)offsetof(redirect_router_options_block, bit_options) },
56 { "forbid_filter_perl", opt_bit | (RDON_PERL << 16),
57 (void *)offsetof(redirect_router_options_block, bit_options) },
58 { "forbid_filter_readfile", opt_bit | (RDON_READFILE << 16),
59 (void *)offsetof(redirect_router_options_block, bit_options) },
60 { "forbid_filter_readsocket", opt_bit | (RDON_READSOCK << 16),
61 (void *)offsetof(redirect_router_options_block, bit_options) },
62 { "forbid_filter_reply",opt_bool,
63 (void *)offsetof(redirect_router_options_block, forbid_filter_reply) },
64 { "forbid_filter_run", opt_bit | (RDON_RUN << 16),
65 (void *)offsetof(redirect_router_options_block, bit_options) },
66 { "forbid_include", opt_bit | (RDON_INCLUDE << 16),
67 (void *)offsetof(redirect_router_options_block, bit_options) },
68 { "forbid_pipe", opt_bool,
69 (void *)offsetof(redirect_router_options_block, forbid_pipe) },
70 { "forbid_sieve_filter",opt_bit | (RDON_SIEVE_FILTER << 16),
71 (void *)offsetof(redirect_router_options_block, bit_options) },
72 { "forbid_smtp_code", opt_bool,
73 (void *)offsetof(redirect_router_options_block, forbid_smtp_code) },
74 { "hide_child_in_errmsg", opt_bool,
75 (void *)offsetof(redirect_router_options_block, hide_child_in_errmsg) },
76 { "ignore_eacces", opt_bit | (RDON_EACCES << 16),
77 (void *)offsetof(redirect_router_options_block, bit_options) },
78 { "ignore_enotdir", opt_bit | (RDON_ENOTDIR << 16),
79 (void *)offsetof(redirect_router_options_block, bit_options) },
80 { "include_directory", opt_stringptr,
81 (void *)offsetof(redirect_router_options_block, include_directory) },
82 { "modemask", opt_octint,
83 (void *)offsetof(redirect_router_options_block, modemask) },
84 { "one_time", opt_bool,
85 (void *)offsetof(redirect_router_options_block, one_time) },
86 { "owners", opt_uidlist,
87 (void *)offsetof(redirect_router_options_block, owners) },
88 { "owngroups", opt_gidlist,
89 (void *)offsetof(redirect_router_options_block, owngroups) },
90 { "pipe_transport", opt_stringptr,
91 (void *)offsetof(redirect_router_options_block, pipe_transport_name) },
92 { "qualify_domain", opt_stringptr,
93 (void *)offsetof(redirect_router_options_block, qualify_domain) },
94 { "qualify_preserve_domain", opt_bool,
95 (void *)offsetof(redirect_router_options_block, qualify_preserve_domain) },
96 { "repeat_use", opt_bool | opt_public,
97 (void *)offsetof(router_instance, repeat_use) },
98 { "reply_transport", opt_stringptr,
99 (void *)offsetof(redirect_router_options_block, reply_transport_name) },
100 { "rewrite", opt_bit | (RDON_REWRITE << 16),
101 (void *)offsetof(redirect_router_options_block, bit_options) },
102 { "sieve_enotify_mailto_owner", opt_stringptr,
103 (void *)offsetof(redirect_router_options_block, sieve_enotify_mailto_owner) },
104 { "sieve_subaddress", opt_stringptr,
105 (void *)offsetof(redirect_router_options_block, sieve_subaddress) },
106 { "sieve_useraddress", opt_stringptr,
107 (void *)offsetof(redirect_router_options_block, sieve_useraddress) },
108 { "sieve_vacation_directory", opt_stringptr,
109 (void *)offsetof(redirect_router_options_block, sieve_vacation_directory) },
110 { "skip_syntax_errors", opt_bool,
111 (void *)offsetof(redirect_router_options_block, skip_syntax_errors) },
112 #ifdef EXPERIMENTAL_SRS
113 { "srs", opt_stringptr,
114 (void *)offsetof(redirect_router_options_block, srs) },
115 { "srs_alias", opt_stringptr,
116 (void *)offsetof(redirect_router_options_block, srs_alias) },
117 { "srs_condition", opt_stringptr,
118 (void *)offsetof(redirect_router_options_block, srs_condition) },
119 { "srs_dbinsert", opt_stringptr,
120 (void *)offsetof(redirect_router_options_block, srs_dbinsert) },
121 { "srs_dbselect", opt_stringptr,
122 (void *)offsetof(redirect_router_options_block, srs_dbselect) },
124 { "syntax_errors_text", opt_stringptr,
125 (void *)offsetof(redirect_router_options_block, syntax_errors_text) },
126 { "syntax_errors_to", opt_stringptr,
127 (void *)offsetof(redirect_router_options_block, syntax_errors_to) }
130 /* Size of the options list. An extern variable has to be used so that its
131 address can appear in the tables drtables.c. */
133 int redirect_router_options_count =
134 sizeof(redirect_router_options)/sizeof(optionlist);
136 /* Default private options block for the redirect router. */
138 redirect_router_options_block redirect_router_option_defaults = {
139 NULL, /* directory_transport */
140 NULL, /* file_transport */
141 NULL, /* pipe_transport */
142 NULL, /* reply_transport */
144 NULL, /* directory_transport_name */
147 NULL, /* file_transport_name */
148 NULL, /* include_directory */
149 NULL, /* pipe_transport_name */
150 NULL, /* reply_transport_name */
151 NULL, /* sieve_subaddress */
152 NULL, /* sieve_useraddress */
153 NULL, /* sieve_vacation_directory */
154 NULL, /* sieve_enotify_mailto_owner */
155 NULL, /* syntax_errors_text */
156 NULL, /* syntax_errors_to */
157 NULL, /* qualify_domain */
159 NULL, /* owngroups */
160 #ifdef EXPERIMENTAL_SRS
162 NULL, /* srs_alias */
163 NULL, /* srs_condition */
164 NULL, /* srs_dbinsert */
165 NULL, /* srs_dbselect */
168 RDO_REWRITE | RDO_PREPEND_HOME, /* bit_options */
169 FALSE, /* check_ancestor */
170 TRUE_UNSET, /* check_owner */
171 TRUE_UNSET, /* check_group */
172 FALSE, /* forbid_file */
173 FALSE, /* forbid_filter_reply */
174 FALSE, /* forbid_pipe */
175 FALSE, /* forbid_smtp_code */
176 FALSE, /* hide_child_in_errmsg */
177 FALSE, /* one_time */
178 FALSE, /* qualify_preserve_domain */
179 FALSE /* skip_syntax_errors */
184 /*************************************************
185 * Initialization entry point *
186 *************************************************/
188 /* Called for each instance, after its options have been read, to enable
189 consistency checks to be done, or anything else that needs to be set up. */
191 void redirect_router_init(router_instance *rblock)
193 redirect_router_options_block *ob =
194 (redirect_router_options_block *)(rblock->options_block);
196 /* Either file or data must be set, but not both */
198 if ((ob->file == NULL) == (ob->data == NULL))
199 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s router:\n "
200 "%sone of \"file\" or \"data\" must be specified",
201 rblock->name, (ob->file == NULL)? "" : "only ");
203 /* Onetime aliases can only be real addresses. Headers can't be manipulated.
204 The combination of one_time and unseen is not allowed. We can't check the
205 expansion of "unseen" here, but we assume that if it is set to anything other
206 than false, there is likely to be a problem. */
210 ob->forbid_pipe = ob->forbid_file = ob->forbid_filter_reply = TRUE;
211 if (rblock->extra_headers != NULL || rblock->remove_headers != NULL)
212 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s router:\n "
213 "\"headers_add\" and \"headers_remove\" are not permitted with "
214 "\"one_time\"", rblock->name);
215 if (rblock->unseen || rblock->expand_unseen != NULL)
216 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s router:\n "
217 "\"unseen\" may not be used with \"one_time\"", rblock->name);
220 /* The defaults for check_owner and check_group depend on other settings. The
221 defaults are: Check the owner if check_local_user or owners is set; check the
222 group if check_local_user is set without a restriction on the group write bit,
223 or if owngroups is set. */
225 if (ob->check_owner == TRUE_UNSET)
226 ob->check_owner = rblock->check_local_user ||
227 (ob->owners != NULL && ob->owners[0] != 0);
229 if (ob->check_group == TRUE_UNSET)
230 ob->check_group = (rblock->check_local_user && (ob->modemask & 020) == 0) ||
231 (ob->owngroups != NULL && ob->owngroups[0] != 0);
233 /* If explicit qualify domain set, the preserve option is locked out */
235 if (ob->qualify_domain != NULL && ob->qualify_preserve_domain)
236 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s router:\n "
237 "only one of \"qualify_domain\" or \"qualify_preserve_domain\" must be set",
240 /* If allow_filter is set, either user or check_local_user must be set. */
242 if (!rblock->check_local_user &&
244 rblock->expand_uid == NULL &&
245 (ob->bit_options & RDO_FILTER) != 0)
246 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s router:\n "
247 "\"user\" or \"check_local_user\" must be set with \"allow_filter\"",
253 /*************************************************
254 * Get errors address and header mods *
255 *************************************************/
257 /* This function is called when new addresses are generated, in order to
258 sort out errors address and header modifications. We put the errors address
259 into the parent address (even though it is never used from there because that
260 address is never transported) so that it can be retrieved if any of the
261 children gets routed by an "unseen" router. The clone of the child that is
262 passed on must have the original errors_address value.
265 rblock the router control block
266 addr the address being routed
267 verify v_none/v_recipient/v_sender/v_expn
268 addr_prop point to the propagated block, which is where the
269 new values are to be placed
271 Returns: the result of rf_get_errors_address() or rf_get_munge_headers(),
272 which is either OK or DEFER
276 sort_errors_and_headers(router_instance *rblock, address_item *addr,
277 int verify, address_item_propagated *addr_prop)
279 int frc = rf_get_errors_address(addr, rblock, verify,
280 &addr_prop->errors_address);
281 if (frc != OK) return frc;
282 addr->prop.errors_address = addr_prop->errors_address;
283 return rf_get_munge_headers(addr, rblock, &addr_prop->extra_headers,
284 &addr_prop->remove_headers);
289 /*************************************************
290 * Process a set of generated new addresses *
291 *************************************************/
293 /* This function sets up a set of newly generated child addresses and puts them
294 on the new address chain. Copy in the uid, gid and permission flags for use by
295 pipes and files, set the parent, and "or" its af_ignore_error flag. Also record
296 the setting for any starting router.
298 If the generated address is the same as one of its ancestors, and the
299 check_ancestor flag is set, do not use this generated address, but replace it
300 with a copy of the input address. This is to cope with cases where A is aliased
301 to B and B has a .forward file pointing to A, though it is usually set on the
302 forwardfile rather than the aliasfile. We can't just pass on the old
303 address by returning FAIL, because it must act as a general parent for
304 generated addresses, and only get marked "done" when all its children are
309 addr_new new address chain
310 addr original address
311 generated list of generated addresses
312 addr_prop the propagated block, containing the errors_address,
313 header modification stuff, and address_data
314 ugidptr points to uid/gid data for files, pipes, autoreplies
315 pw password entry, set if ob->check_local_user is TRUE
321 add_generated(router_instance *rblock, address_item **addr_new,
322 address_item *addr, address_item *generated,
323 address_item_propagated *addr_prop, ugid_block *ugidptr, struct passwd *pw)
325 redirect_router_options_block *ob =
326 (redirect_router_options_block *)(rblock->options_block);
328 while (generated != NULL)
330 address_item *parent;
331 address_item *next = generated;
332 uschar *errors_address = next->prop.errors_address;
334 generated = next->next;
336 orflag(next, addr, af_ignore_error);
337 next->start_router = rblock->redirect_router;
338 if (addr->child_count == SHRT_MAX)
339 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "%s router generated more than %d "
340 "child addresses for <%s>", rblock->name, SHRT_MAX, addr->address);
343 next->next = *addr_new;
346 /* Don't do the "one_time" thing for the first pass of a 2-stage queue run. */
348 if (ob->one_time && !queue_2stage)
350 for (parent = addr; parent->parent != NULL; parent = parent->parent);
351 next->onetime_parent = parent->address;
354 if (ob->hide_child_in_errmsg) setflag(next, af_hide_child);
356 /* If check_ancestor is set, we want to know if any ancestor of this address
357 is the address we are about to generate. The check must be done caselessly
358 unless the ancestor was routed by a case-sensitive router. */
360 if (ob->check_ancestor)
362 for (parent = addr; parent != NULL; parent = parent->parent)
364 if (((parent->router != NULL && parent->router->caseful_local_part)?
365 Ustrcmp(next->address, parent->address)
367 strcmpic(next->address, parent->address)
370 DEBUG(D_route) debug_printf("generated parent replaced by child\n");
371 next->address = string_copy(addr->address);
377 /* A user filter may, under some circumstances, set up an errors address.
378 If so, we must take care to re-instate it when we copy in the propagated
379 data so that it overrides any errors_to setting on the router. */
381 next->prop = *addr_prop;
382 if (errors_address != NULL) next->prop.errors_address = errors_address;
384 /* For pipes, files, and autoreplies, record this router as handling them,
385 because they don't go through the routing process again. Then set up uid,
386 gid, home and current directories for transporting. */
388 if (testflag(next, af_pfr))
390 next->router = rblock;
391 rf_set_ugid(next, ugidptr); /* Will contain pw values if not overridden */
393 /* When getting the home directory out of the password information, wrap it
394 in \N...\N to avoid expansion later. In Cygwin, home directories can
395 contain $ characters. */
397 if (rblock->home_directory != NULL)
398 next->home_dir = rblock->home_directory;
399 else if (rblock->check_local_user)
400 next->home_dir = string_sprintf("\\N%s\\N", pw->pw_dir);
401 else if (rblock->router_home_directory != NULL &&
402 testflag(addr, af_home_expanded))
404 next->home_dir = deliver_home;
405 setflag(next, af_home_expanded);
408 next->current_dir = rblock->current_directory;
410 /* Permission options */
412 if (!ob->forbid_pipe) setflag(next, af_allow_pipe);
413 if (!ob->forbid_file) setflag(next, af_allow_file);
414 if (!ob->forbid_filter_reply) setflag(next, af_allow_reply);
416 /* If the transport setting fails, the error gets picked up at the outer
417 level from the setting of basic_errno in the address. */
419 if (next->address[0] == '|')
421 address_pipe = next->address;
422 if (rf_get_transport(ob->pipe_transport_name, &(ob->pipe_transport),
423 next, rblock->name, US"pipe_transport"))
424 next->transport = ob->pipe_transport;
427 else if (next->address[0] == '>')
429 if (rf_get_transport(ob->reply_transport_name, &(ob->reply_transport),
430 next, rblock->name, US"reply_transport"))
431 next->transport = ob->reply_transport;
433 else /* must be file or directory */
435 int len = Ustrlen(next->address);
436 address_file = next->address;
437 if (next->address[len-1] == '/')
439 if (rf_get_transport(ob->directory_transport_name,
440 &(ob->directory_transport), next, rblock->name,
441 US"directory_transport"))
442 next->transport = ob->directory_transport;
446 if (rf_get_transport(ob->file_transport_name, &(ob->file_transport),
447 next, rblock->name, US"file_transport"))
448 next->transport = ob->file_transport;
455 next->prop.utf8_msg = string_is_utf8(next->address)
456 || (sender_address && string_is_utf8(sender_address));
461 debug_printf("%s router generated %s\n %serrors_to=%s transport=%s\n",
464 testflag(next, af_pfr)? "pipe, file, or autoreply\n " : "",
465 next->prop.errors_address,
466 (next->transport == NULL)? US"NULL" : next->transport->name);
468 if (testflag(next, af_uid_set))
469 debug_printf(" uid=%ld ", (long int)(next->uid));
471 debug_printf(" uid=unset ");
473 if (testflag(next, af_gid_set))
474 debug_printf("gid=%ld ", (long int)(next->gid));
476 debug_printf("gid=unset ");
479 if (next->prop.utf8_msg) debug_printf("utf8 ");
482 debug_printf("home=%s\n", next->home_dir);
488 /*************************************************
490 *************************************************/
492 /* See local README for interface description. This router returns:
495 . empty address list, or filter did nothing significant
498 . verifying the errors address caused a deferment or a big disaster such
499 as an expansion failure (rf_get_errors_address)
500 . expanding a headers_{add,remove} string caused a deferment or another
501 expansion error (rf_get_munge_headers)
502 . :defer: or "freeze" in a filter
503 . error in address list or filter
504 . skipped syntax errors, but failed to send the message
507 . address was :blackhole:d or "seen finish"ed
513 . new addresses added to addr_new
516 int redirect_router_entry(
517 router_instance *rblock, /* data for this instantiation */
518 address_item *addr, /* address we are working on */
519 struct passwd *pw, /* passwd entry after check_local_user */
520 int verify, /* v_none/v_recipient/v_sender/v_expn */
521 address_item **addr_local, /* add it to this if it's local */
522 address_item **addr_remote, /* add it to this if it's remote */
523 address_item **addr_new, /* put new addresses on here */
524 address_item **addr_succeed) /* put old address here on success */
526 redirect_router_options_block *ob =
527 (redirect_router_options_block *)(rblock->options_block);
528 address_item *generated = NULL;
529 const uschar *save_qualify_domain_recipient = qualify_domain_recipient;
530 uschar *discarded = US"discarded";
531 address_item_propagated addr_prop;
532 error_block *eblock = NULL;
534 redirect_block redirect;
535 int filtertype = FILTER_UNSET;
537 int options = ob->bit_options;
541 addr_local = addr_local; /* Keep picky compilers happy */
542 addr_remote = addr_remote;
544 /* Initialize the data to be propagated to the children */
546 addr_prop.address_data = deliver_address_data;
547 addr_prop.domain_data = deliver_domain_data;
548 addr_prop.localpart_data = deliver_localpart_data;
549 addr_prop.errors_address = NULL;
550 addr_prop.extra_headers = NULL;
551 addr_prop.remove_headers = NULL;
553 #ifdef EXPERIMENTAL_SRS
554 addr_prop.srs_sender = NULL;
557 /* When verifying and testing addresses, the "logwrite" command in filters
560 if (verify == v_none && !address_test_mode) options |= RDO_REALLOG;
562 /* Sort out the fixed or dynamic uid/gid. This uid is used (a) for reading the
563 file (and interpreting a filter) and (b) for running the transports for
564 generated file and pipe addresses. It is not (necessarily) the same as the uids
565 that may own the file. Exim panics if an expanded string is not a number and
566 can't be found in the password file. Other errors set the freezing bit. */
568 if (!rf_get_ugid(rblock, addr, &ugid)) return DEFER;
570 if (!ugid.uid_set && pw != NULL)
572 ugid.uid = pw->pw_uid;
576 if (!ugid.gid_set && pw != NULL)
578 ugid.gid = pw->pw_gid;
582 #ifdef EXPERIMENTAL_SRS
583 /* Perform SRS on recipient/return-path as required */
589 if(ob->srs_condition != NULL)
590 usesrs = expand_check_condition(ob->srs_condition, "srs_condition expansion failed", NULL);
594 int srs_action = 0, n_srs;
598 /* What are we doing? */
599 if(Ustrcmp(ob->srs, "forward") == 0)
601 else if(Ustrcmp(ob->srs, "reverseandforward") == 0)
605 if((ob->srs_dbinsert == NULL) ^ (ob->srs_dbselect == NULL))
608 else if(Ustrcmp(ob->srs, "reverse") == 0)
614 srs_orig_recipient = addr->address;
618 eximsrs_db_set(TRUE, ob->srs_dbselect);
619 /* Comment this out for now...
621 // eximsrs_db_set(TRUE, NULL);
624 if((n_srs = eximsrs_reverse(&res, addr->address)) == OK)
628 debug_printf("SRS (reverse): Recipient '%s' rewritten to '%s'\n", srs_orig_recipient, srs_recipient);
638 /* No point in actually performing SRS if we are just verifying a recipient */
639 if((srs_action & 1) && verify == v_none &&
640 (sender_address ? sender_address[0] != 0 : FALSE))
643 srs_orig_sender = sender_address;
646 eximsrs_db_set(FALSE, ob->srs_dbinsert);
647 /* Comment this out for now...
649 // eximsrs_db_set(FALSE, NULL);
652 if(ob->srs_alias != NULL ? (usedomain = expand_string(ob->srs_alias)) == NULL : 1)
653 usedomain = deliver_domain;
655 if((n_srs = eximsrs_forward(&res, sender_address, usedomain)) == OK)
657 addr_prop.srs_sender = res;
659 debug_printf("SRS (forward): Sender '%s' rewritten to '%s'\n", srs_orig_sender, res);
671 /* Call the function that interprets redirection data, either inline or from a
672 file. This is a separate function so that the system filter can use it. It will
673 run the function in a subprocess if necessary. If qualify_preserve_domain is
674 set, temporarily reset qualify_domain_recipient to the current domain so that
675 any unqualified addresses get qualified with the same domain as the incoming
676 address. Otherwise, if a local qualify_domain is provided, set that up. */
678 if (ob->qualify_preserve_domain)
679 qualify_domain_recipient = addr->domain;
680 else if (ob->qualify_domain != NULL)
682 uschar *new_qdr = rf_expand_data(addr, ob->qualify_domain, &xrc);
683 if (new_qdr == NULL) return xrc;
684 qualify_domain_recipient = new_qdr;
687 redirect.owners = ob->owners;
688 redirect.owngroups = ob->owngroups;
689 redirect.modemask = ob->modemask;
690 redirect.check_owner = ob->check_owner;
691 redirect.check_group = ob->check_group;
694 if (ob->file != NULL)
696 redirect.string = ob->file;
697 redirect.isfile = TRUE;
701 redirect.string = ob->data;
702 redirect.isfile = FALSE;
705 frc = rda_interpret(&redirect, options, ob->include_directory,
706 ob->sieve_vacation_directory, ob->sieve_enotify_mailto_owner,
707 ob->sieve_useraddress, ob->sieve_subaddress, &ugid, &generated,
708 &(addr->message), ob->skip_syntax_errors? &eblock : NULL, &filtertype,
709 string_sprintf("%s router (recipient is %s)", rblock->name, addr->address));
711 qualify_domain_recipient = save_qualify_domain_recipient;
713 /* Handle exceptional returns from filtering or processing an address list.
714 For FAIL and FREEZE we honour any previously set up deliveries by a filter. */
719 addr->message = addr->user_message = NULL;
723 DEBUG(D_route) debug_printf("address :blackhole:d\n");
725 discarded = US":blackhole:";
729 /* FF_DEFER and FF_FAIL can arise only as a result of explicit commands
730 (:defer: or :fail: in an alias file or "fail" in a filter). If a configured
731 message was supplied, allow it to be included in an SMTP response after
732 verifying. Remove any SMTP code if it is not allowed. */
739 if ((xrc = sort_errors_and_headers(rblock, addr, verify, &addr_prop)) != OK)
741 add_generated(rblock, addr_new, addr, generated, &addr_prop, &ugid, pw);
745 if (addr->message == NULL)
746 addr->message = (yield == FAIL)? US"forced rejection" : US"forced defer";
750 if (ob->forbid_smtp_code &&
751 pcre_exec(regex_smtp_code, NULL, CS addr->message,
752 Ustrlen(addr->message), 0, PCRE_EOPT,
753 ovector, sizeof(ovector)/sizeof(int)) >= 0)
755 DEBUG(D_route) debug_printf("SMTP code at start of error message "
756 "is ignored because forbid_smtp_code is set\n");
757 addr->message += ovector[1];
759 addr->user_message = addr->message;
760 setflag(addr, af_pass_message);
764 /* As in the case of a system filter, a freeze does not happen after a manual
765 thaw. In case deliveries were set up by the filter, we set the child count
766 high so that their completion does not mark the original address done. */
769 if (!deliver_manual_thaw)
771 if ((xrc = sort_errors_and_headers(rblock, addr, verify, &addr_prop))
773 add_generated(rblock, addr_new, addr, generated, &addr_prop, &ugid, pw);
774 if (addr->message == NULL) addr->message = US"frozen by filter";
775 addr->special_action = SPECIAL_FREEZE;
776 addr->child_count = 9999;
779 frc = FF_NOTDELIVERED;
782 /* Handle syntax errors and :include: failures and lookup defers */
787 /* If filtertype is still FILTER_UNSET, it means that the redirection data
788 was never inspected, so the error was an expansion failure or failure to open
789 the file, or whatever. In these cases, the existing error message is probably
792 if (filtertype == FILTER_UNSET) return DEFER;
794 /* If it was a filter and skip_syntax_errors is set, we want to set up
795 the error message so that it can be logged and mailed to somebody. */
797 if (filtertype != FILTER_FORWARD && ob->skip_syntax_errors)
799 eblock = store_get(sizeof(error_block));
801 eblock->text1 = addr->message;
802 eblock->text2 = NULL;
803 addr->message = addr->user_message = NULL;
806 /* Otherwise set up the error for the address and defer. */
810 addr->basic_errno = ERRNO_BADREDIRECT;
811 addr->message = string_sprintf("error in %s %s: %s",
812 (filtertype != FILTER_FORWARD)? "filter" : "redirect",
813 (ob->data == NULL)? "file" : "data",
820 /* Yield is either FF_DELIVERED (significant action) or FF_NOTDELIVERED (no
821 significant action). Before dealing with these, however, we must handle the
822 effect of skip_syntax_errors.
824 If skip_syntax_errors was set and there were syntax errors in an address list,
825 error messages will be present in eblock. Log them and send a message if so
826 configured. We cannot do this earlier, because the error message must not be
827 sent as the local user. If there were no valid addresses, generated will be
828 NULL. In this case, the router declines.
830 For a filter file, the error message has been fudged into an eblock. After
831 dealing with it, the router declines. */
835 if (!moan_skipped_syntax_errors(
836 rblock->name, /* For message content */
838 (verify != v_none || address_test_mode)?
839 NULL : ob->syntax_errors_to, /* Who to mail */
840 generated != NULL, /* True if not all failed */
841 ob->syntax_errors_text)) /* Custom message */
844 if (filtertype != FILTER_FORWARD || generated == NULL)
846 addr->message = US"syntax error in redirection data";
851 /* Sort out the errors address and any header modifications, and handle the
852 generated addresses, if any. If there are no generated addresses, we must avoid
853 calling sort_errors_and_headers() in case this router declines - that function
854 may modify the errors_address field in the current address, and we don't want
855 to do that for a decline. */
857 if (generated != NULL)
859 if ((xrc = sort_errors_and_headers(rblock, addr, verify, &addr_prop)) != OK)
861 add_generated(rblock, addr_new, addr, generated, &addr_prop, &ugid, pw);
864 /* FF_DELIVERED with no generated addresses is what we get when an address list
865 contains :blackhole: or a filter contains "seen finish" without having
866 generated anything. Log what happened to this address, and return DISCARD. */
868 if (frc == FF_DELIVERED)
870 if (generated == NULL && verify == v_none && !address_test_mode)
872 log_write(0, LOG_MAIN, "=> %s <%s> R=%s", discarded, addr->address,
878 /* For an address list, FF_NOTDELIVERED always means that no addresses were
879 generated. For a filter, addresses may or may not have been generated. If none
880 were, it's the same as an empty address list, and the router declines. However,
881 if addresses were generated, we can't just decline because successful delivery
882 of the base address gets it marked "done", so deferred generated addresses
883 never get tried again. We have to generate a new version of the base address,
884 as if there were a "deliver" command in the filter file, with the original
885 address as parent. */
891 if (generated == NULL) return DECLINE;
893 next = deliver_make_addr(addr->address, FALSE);
896 next->next = *addr_new;
899 /* Copy relevant flags (af_propagate is a name for the set), and set the
900 data that propagates. */
902 copyflag(next, addr, af_propagate);
903 next->prop = addr_prop;
905 DEBUG(D_route) debug_printf("%s router autogenerated %s\n%s%s%s",
908 (addr_prop.errors_address != NULL)? " errors to " : "",
909 (addr_prop.errors_address != NULL)? addr_prop.errors_address : US"",
910 (addr_prop.errors_address != NULL)? "\n" : "");
913 /* Control gets here only when the address has been completely handled. Put the
914 original address onto the succeed queue so that any retry items that get
915 attached to it get processed. */
917 addr->next = *addr_succeed;
918 *addr_succeed = addr;
923 /* End of routers/redirect.c */