1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
5 /* Copyright (c) University of Cambridge 1995 - 2009 */
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->p.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->p.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->p = *addr_prop;
382 if (errors_address != NULL) next->p.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;
456 debug_printf("%s router generated %s\n %serrors_to=%s transport=%s\n",
459 testflag(next, af_pfr)? "pipe, file, or autoreply\n " : "",
460 next->p.errors_address,
461 (next->transport == NULL)? US"NULL" : next->transport->name);
463 if (testflag(next, af_uid_set))
464 debug_printf(" uid=%ld ", (long int)(next->uid));
466 debug_printf(" uid=unset ");
468 if (testflag(next, af_gid_set))
469 debug_printf("gid=%ld ", (long int)(next->gid));
471 debug_printf("gid=unset ");
473 debug_printf("home=%s\n", next->home_dir);
479 /*************************************************
481 *************************************************/
483 /* See local README for interface description. This router returns:
486 . empty address list, or filter did nothing significant
489 . verifying the errors address caused a deferment or a big disaster such
490 as an expansion failure (rf_get_errors_address)
491 . expanding a headers_{add,remove} string caused a deferment or another
492 expansion error (rf_get_munge_headers)
493 . :defer: or "freeze" in a filter
494 . error in address list or filter
495 . skipped syntax errors, but failed to send the message
498 . address was :blackhole:d or "seen finish"ed
504 . new addresses added to addr_new
507 int redirect_router_entry(
508 router_instance *rblock, /* data for this instantiation */
509 address_item *addr, /* address we are working on */
510 struct passwd *pw, /* passwd entry after check_local_user */
511 int verify, /* v_none/v_recipient/v_sender/v_expn */
512 address_item **addr_local, /* add it to this if it's local */
513 address_item **addr_remote, /* add it to this if it's remote */
514 address_item **addr_new, /* put new addresses on here */
515 address_item **addr_succeed) /* put old address here on success */
517 redirect_router_options_block *ob =
518 (redirect_router_options_block *)(rblock->options_block);
519 address_item *generated = NULL;
520 uschar *save_qualify_domain_recipient = qualify_domain_recipient;
521 uschar *discarded = US"discarded";
522 address_item_propagated addr_prop;
523 error_block *eblock = NULL;
525 redirect_block redirect;
526 int filtertype = FILTER_UNSET;
528 int options = ob->bit_options;
532 addr_local = addr_local; /* Keep picky compilers happy */
533 addr_remote = addr_remote;
535 /* Initialize the data to be propagated to the children */
537 addr_prop.address_data = deliver_address_data;
538 addr_prop.domain_data = deliver_domain_data;
539 addr_prop.localpart_data = deliver_localpart_data;
540 addr_prop.errors_address = NULL;
541 addr_prop.extra_headers = NULL;
542 addr_prop.remove_headers = NULL;
544 #ifdef EXPERIMENTAL_SRS
545 addr_prop.srs_sender = NULL;
548 /* When verifying and testing addresses, the "logwrite" command in filters
551 if (verify == v_none && !address_test_mode) options |= RDO_REALLOG;
553 /* Sort out the fixed or dynamic uid/gid. This uid is used (a) for reading the
554 file (and interpreting a filter) and (b) for running the transports for
555 generated file and pipe addresses. It is not (necessarily) the same as the uids
556 that may own the file. Exim panics if an expanded string is not a number and
557 can't be found in the password file. Other errors set the freezing bit. */
559 if (!rf_get_ugid(rblock, addr, &ugid)) return DEFER;
561 if (!ugid.uid_set && pw != NULL)
563 ugid.uid = pw->pw_uid;
567 if (!ugid.gid_set && pw != NULL)
569 ugid.gid = pw->pw_gid;
573 #ifdef EXPERIMENTAL_SRS
574 /* Perform SRS on recipient/return-path as required */
580 if(ob->srs_condition != NULL)
581 usesrs = expand_check_condition(ob->srs_condition, "srs_condition expansion failed", NULL);
585 int srs_action = 0, n_srs;
589 /* What are we doing? */
590 if(Ustrcmp(ob->srs, "forward") == 0)
592 else if(Ustrcmp(ob->srs, "reverseandforward") == 0)
596 if((ob->srs_dbinsert == NULL) ^ (ob->srs_dbselect == NULL))
599 else if(Ustrcmp(ob->srs, "reverse") == 0)
605 srs_orig_recipient = addr->address;
609 eximsrs_db_set(TRUE, ob->srs_dbselect);
610 /* Comment this out for now...
612 // eximsrs_db_set(TRUE, NULL);
615 if((n_srs = eximsrs_reverse(&res, addr->address)) == OK)
619 debug_printf("SRS (reverse): Recipient '%s' rewritten to '%s'\n", srs_orig_recipient, srs_recipient);
629 /* No point in actually performing SRS if we are just verifying a recipient */
630 if((srs_action & 1) && verify == v_none &&
631 (sender_address ? sender_address[0] != 0 : FALSE))
634 srs_orig_sender = sender_address;
637 eximsrs_db_set(FALSE, ob->srs_dbinsert);
638 /* Comment this out for now...
640 // eximsrs_db_set(FALSE, NULL);
643 if(ob->srs_alias != NULL ? (usedomain = expand_string(ob->srs_alias)) == NULL : 1)
644 usedomain = deliver_domain;
646 if((n_srs = eximsrs_forward(&res, sender_address, usedomain)) == OK)
648 addr_prop.srs_sender = res;
650 debug_printf("SRS (forward): Sender '%s' rewritten to '%s'\n", srs_orig_sender, res);
662 /* Call the function that interprets redirection data, either inline or from a
663 file. This is a separate function so that the system filter can use it. It will
664 run the function in a subprocess if necessary. If qualify_preserve_domain is
665 set, temporarily reset qualify_domain_recipient to the current domain so that
666 any unqualified addresses get qualified with the same domain as the incoming
667 address. Otherwise, if a local qualify_domain is provided, set that up. */
669 if (ob->qualify_preserve_domain)
670 qualify_domain_recipient = addr->domain;
671 else if (ob->qualify_domain != NULL)
673 uschar *new_qdr = rf_expand_data(addr, ob->qualify_domain, &xrc);
674 if (new_qdr == NULL) return xrc;
675 qualify_domain_recipient = new_qdr;
678 redirect.owners = ob->owners;
679 redirect.owngroups = ob->owngroups;
680 redirect.modemask = ob->modemask;
681 redirect.check_owner = ob->check_owner;
682 redirect.check_group = ob->check_group;
685 if (ob->file != NULL)
687 redirect.string = ob->file;
688 redirect.isfile = TRUE;
692 redirect.string = ob->data;
693 redirect.isfile = FALSE;
696 frc = rda_interpret(&redirect, options, ob->include_directory,
697 ob->sieve_vacation_directory, ob->sieve_enotify_mailto_owner,
698 ob->sieve_useraddress, ob->sieve_subaddress, &ugid, &generated,
699 &(addr->message), ob->skip_syntax_errors? &eblock : NULL, &filtertype,
700 string_sprintf("%s router (recipient is %s)", rblock->name, addr->address));
702 qualify_domain_recipient = save_qualify_domain_recipient;
704 /* Handle exceptional returns from filtering or processing an address list.
705 For FAIL and FREEZE we honour any previously set up deliveries by a filter. */
710 addr->message = addr->user_message = NULL;
714 DEBUG(D_route) debug_printf("address :blackhole:d\n");
716 discarded = US":blackhole:";
720 /* FF_DEFER and FF_FAIL can arise only as a result of explicit commands
721 (:defer: or :fail: in an alias file or "fail" in a filter). If a configured
722 message was supplied, allow it to be included in an SMTP response after
723 verifying. Remove any SMTP code if it is not allowed. */
730 if ((xrc = sort_errors_and_headers(rblock, addr, verify, &addr_prop)) != OK)
732 add_generated(rblock, addr_new, addr, generated, &addr_prop, &ugid, pw);
736 if (addr->message == NULL)
737 addr->message = (yield == FAIL)? US"forced rejection" : US"forced defer";
741 if (ob->forbid_smtp_code &&
742 pcre_exec(regex_smtp_code, NULL, CS addr->message,
743 Ustrlen(addr->message), 0, PCRE_EOPT,
744 ovector, sizeof(ovector)/sizeof(int)) >= 0)
746 DEBUG(D_route) debug_printf("SMTP code at start of error message "
747 "is ignored because forbid_smtp_code is set\n");
748 addr->message += ovector[1];
750 addr->user_message = addr->message;
751 setflag(addr, af_pass_message);
755 /* As in the case of a system filter, a freeze does not happen after a manual
756 thaw. In case deliveries were set up by the filter, we set the child count
757 high so that their completion does not mark the original address done. */
760 if (!deliver_manual_thaw)
762 if ((xrc = sort_errors_and_headers(rblock, addr, verify, &addr_prop))
764 add_generated(rblock, addr_new, addr, generated, &addr_prop, &ugid, pw);
765 if (addr->message == NULL) addr->message = US"frozen by filter";
766 addr->special_action = SPECIAL_FREEZE;
767 addr->child_count = 9999;
770 frc = FF_NOTDELIVERED;
773 /* Handle syntax errors and :include: failures and lookup defers */
778 /* If filtertype is still FILTER_UNSET, it means that the redirection data
779 was never inspected, so the error was an expansion failure or failure to open
780 the file, or whatever. In these cases, the existing error message is probably
783 if (filtertype == FILTER_UNSET) return DEFER;
785 /* If it was a filter and skip_syntax_errors is set, we want to set up
786 the error message so that it can be logged and mailed to somebody. */
788 if (filtertype != FILTER_FORWARD && ob->skip_syntax_errors)
790 eblock = store_get(sizeof(error_block));
792 eblock->text1 = addr->message;
793 eblock->text2 = NULL;
794 addr->message = addr->user_message = NULL;
797 /* Otherwise set up the error for the address and defer. */
801 addr->basic_errno = ERRNO_BADREDIRECT;
802 addr->message = string_sprintf("error in %s %s: %s",
803 (filtertype != FILTER_FORWARD)? "filter" : "redirect",
804 (ob->data == NULL)? "file" : "data",
811 /* Yield is either FF_DELIVERED (significant action) or FF_NOTDELIVERED (no
812 significant action). Before dealing with these, however, we must handle the
813 effect of skip_syntax_errors.
815 If skip_syntax_errors was set and there were syntax errors in an address list,
816 error messages will be present in eblock. Log them and send a message if so
817 configured. We cannot do this earlier, because the error message must not be
818 sent as the local user. If there were no valid addresses, generated will be
819 NULL. In this case, the router declines.
821 For a filter file, the error message has been fudged into an eblock. After
822 dealing with it, the router declines. */
826 if (!moan_skipped_syntax_errors(
827 rblock->name, /* For message content */
829 (verify != v_none || address_test_mode)?
830 NULL : ob->syntax_errors_to, /* Who to mail */
831 generated != NULL, /* True if not all failed */
832 ob->syntax_errors_text)) /* Custom message */
835 if (filtertype != FILTER_FORWARD || generated == NULL)
837 addr->message = US"syntax error in redirection data";
842 /* Sort out the errors address and any header modifications, and handle the
843 generated addresses, if any. If there are no generated addresses, we must avoid
844 calling sort_errors_and_headers() in case this router declines - that function
845 may modify the errors_address field in the current address, and we don't want
846 to do that for a decline. */
848 if (generated != NULL)
850 if ((xrc = sort_errors_and_headers(rblock, addr, verify, &addr_prop)) != OK)
852 add_generated(rblock, addr_new, addr, generated, &addr_prop, &ugid, pw);
855 /* FF_DELIVERED with no generated addresses is what we get when an address list
856 contains :blackhole: or a filter contains "seen finish" without having
857 generated anything. Log what happened to this address, and return DISCARD. */
859 if (frc == FF_DELIVERED)
861 if (generated == NULL && verify == v_none && !address_test_mode)
863 log_write(0, LOG_MAIN, "=> %s <%s> R=%s", discarded, addr->address,
869 /* For an address list, FF_NOTDELIVERED always means that no addresses were
870 generated. For a filter, addresses may or may not have been generated. If none
871 were, it's the same as an empty address list, and the router declines. However,
872 if addresses were generated, we can't just decline because successful delivery
873 of the base address gets it marked "done", so deferred generated addresses
874 never get tried again. We have to generate a new version of the base address,
875 as if there were a "deliver" command in the filter file, with the original
876 address as parent. */
882 if (generated == NULL) return DECLINE;
884 next = deliver_make_addr(addr->address, FALSE);
887 next->next = *addr_new;
890 /* Copy relevant flags (af_propagate is a name for the set), and set the
891 data that propagates. */
893 copyflag(next, addr, af_propagate);
896 DEBUG(D_route) debug_printf("%s router autogenerated %s\n%s%s%s",
899 (addr_prop.errors_address != NULL)? " errors to " : "",
900 (addr_prop.errors_address != NULL)? addr_prop.errors_address : US"",
901 (addr_prop.errors_address != NULL)? "\n" : "");
904 /* Control gets here only when the address has been completely handled. Put the
905 original address onto the succeed queue so that any retry items that get
906 attached to it get processed. */
908 addr->next = *addr_succeed;
909 *addr_succeed = addr;
914 /* End of routers/redirect.c */