1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
5 /* Copyright (c) University of Cambridge 1995 - 2018 */
6 /* Copyright (c) The Exim Maintainers 2020 */
7 /* See the file NOTICE for conditions of use and distribution. */
11 #include "rf_functions.h"
16 /* Options specific to the redirect router. */
17 #define LOFF(field) OPT_OFF(redirect_router_options_block, field)
19 optionlist redirect_router_options[] = {
20 { "allow_defer", opt_bit | (RDON_DEFER << 16),
22 { "allow_fail", opt_bit | (RDON_FAIL << 16),
24 { "allow_filter", opt_bit | (RDON_FILTER << 16),
26 { "allow_freeze", opt_bit | (RDON_FREEZE << 16),
28 { "check_ancestor", opt_bool, LOFF(check_ancestor) },
29 { "check_group", opt_bool, LOFF(check_group) },
30 { "check_owner", opt_bool, LOFF(check_owner) },
31 { "data", opt_stringptr, LOFF(data) },
32 { "directory_transport",opt_stringptr, LOFF(directory_transport_name) },
33 { "file", opt_stringptr, LOFF(file) },
34 { "file_transport", opt_stringptr, LOFF(file_transport_name) },
36 { "filter_prepend_home",opt_bit | (RDON_PREPEND_HOME << 16),
38 { "forbid_blackhole", opt_bit | (RDON_BLACKHOLE << 16),
40 { "forbid_exim_filter", opt_bit | (RDON_EXIM_FILTER << 16),
42 { "forbid_file", opt_bool,
44 { "forbid_filter_dlfunc", opt_bit | (RDON_DLFUNC << 16),
46 { "forbid_filter_existstest", opt_bit | (RDON_EXISTS << 16),
48 { "forbid_filter_logwrite",opt_bit | (RDON_LOG << 16),
50 { "forbid_filter_lookup", opt_bit | (RDON_LOOKUP << 16),
52 { "forbid_filter_perl", opt_bit | (RDON_PERL << 16),
54 { "forbid_filter_readfile", opt_bit | (RDON_READFILE << 16),
56 { "forbid_filter_readsocket", opt_bit | (RDON_READSOCK << 16),
58 { "forbid_filter_reply",opt_bool,
59 LOFF(forbid_filter_reply) },
60 { "forbid_filter_run", opt_bit | (RDON_RUN << 16),
62 { "forbid_include", opt_bit | (RDON_INCLUDE << 16),
64 { "forbid_pipe", opt_bool,
66 { "forbid_sieve_filter",opt_bit | (RDON_SIEVE_FILTER << 16),
68 { "forbid_smtp_code", opt_bool,
69 LOFF(forbid_smtp_code) },
70 { "hide_child_in_errmsg", opt_bool,
71 LOFF( hide_child_in_errmsg) },
72 { "ignore_eacces", opt_bit | (RDON_EACCES << 16),
74 { "ignore_enotdir", opt_bit | (RDON_ENOTDIR << 16),
77 { "include_directory", opt_stringptr, LOFF( include_directory) },
78 { "modemask", opt_octint, LOFF(modemask) },
79 { "one_time", opt_bool, LOFF(one_time) },
80 { "owners", opt_uidlist, LOFF(owners) },
81 { "owngroups", opt_gidlist, LOFF(owngroups) },
82 { "pipe_transport", opt_stringptr, LOFF(pipe_transport_name) },
83 { "qualify_domain", opt_stringptr, LOFF(qualify_domain) },
84 { "qualify_preserve_domain", opt_bool, LOFF(qualify_preserve_domain) },
85 { "repeat_use", opt_bool | opt_public, OPT_OFF(router_instance, repeat_use) },
86 { "reply_transport", opt_stringptr, LOFF(reply_transport_name) },
88 { "rewrite", opt_bit | (RDON_REWRITE << 16),
91 { "sieve_enotify_mailto_owner", opt_stringptr, LOFF(sieve_enotify_mailto_owner) },
92 { "sieve_subaddress", opt_stringptr, LOFF(sieve_subaddress) },
93 { "sieve_useraddress", opt_stringptr, LOFF(sieve_useraddress) },
94 { "sieve_vacation_directory", opt_stringptr, LOFF(sieve_vacation_directory) },
95 { "skip_syntax_errors", opt_bool, LOFF(skip_syntax_errors) },
96 #ifdef EXPERIMENTAL_SRS
97 { "srs", opt_stringptr, LOFF(srs) },
98 { "srs_alias", opt_stringptr, LOFF(srs_alias) },
99 { "srs_condition", opt_stringptr, LOFF(srs_condition) },
100 { "srs_dbinsert", opt_stringptr, LOFF(srs_dbinsert) },
101 { "srs_dbselect", opt_stringptr, LOFF(srs_dbselect) },
103 { "syntax_errors_text", opt_stringptr, LOFF(syntax_errors_text) },
104 { "syntax_errors_to", opt_stringptr, LOFF(syntax_errors_to) }
107 /* Size of the options list. An extern variable has to be used so that its
108 address can appear in the tables drtables.c. */
110 int redirect_router_options_count =
111 sizeof(redirect_router_options)/sizeof(optionlist);
117 redirect_router_options_block redirect_router_option_defaults = {0};
118 void redirect_router_init(router_instance *rblock) {}
119 int redirect_router_entry(router_instance *rblock, address_item *addr,
120 struct passwd *pw, int verify, address_item **addr_local,
121 address_item **addr_remote, address_item **addr_new,
122 address_item **addr_succeed) {return 0;}
124 #else /*!MACRO_PREDEF*/
128 /* Default private options block for the redirect router. */
130 redirect_router_options_block redirect_router_option_defaults = {
131 NULL, /* directory_transport */
132 NULL, /* file_transport */
133 NULL, /* pipe_transport */
134 NULL, /* reply_transport */
136 NULL, /* directory_transport_name */
139 NULL, /* file_transport_name */
140 NULL, /* include_directory */
141 NULL, /* pipe_transport_name */
142 NULL, /* reply_transport_name */
143 NULL, /* sieve_subaddress */
144 NULL, /* sieve_useraddress */
145 NULL, /* sieve_vacation_directory */
146 NULL, /* sieve_enotify_mailto_owner */
147 NULL, /* syntax_errors_text */
148 NULL, /* syntax_errors_to */
149 NULL, /* qualify_domain */
151 NULL, /* owngroups */
152 #ifdef EXPERIMENTAL_SRS
154 NULL, /* srs_alias */
155 NULL, /* srs_condition */
156 NULL, /* srs_dbinsert */
157 NULL, /* srs_dbselect */
160 RDO_REWRITE | RDO_PREPEND_HOME, /* bit_options */
161 FALSE, /* check_ancestor */
162 TRUE_UNSET, /* check_owner */
163 TRUE_UNSET, /* check_group */
164 FALSE, /* forbid_file */
165 FALSE, /* forbid_filter_reply */
166 FALSE, /* forbid_pipe */
167 FALSE, /* forbid_smtp_code */
168 FALSE, /* hide_child_in_errmsg */
169 FALSE, /* one_time */
170 FALSE, /* qualify_preserve_domain */
171 FALSE /* skip_syntax_errors */
176 /*************************************************
177 * Initialization entry point *
178 *************************************************/
180 /* Called for each instance, after its options have been read, to enable
181 consistency checks to be done, or anything else that needs to be set up. */
183 void redirect_router_init(router_instance *rblock)
185 redirect_router_options_block *ob =
186 (redirect_router_options_block *)(rblock->options_block);
188 /* Either file or data must be set, but not both */
190 if ((ob->file == NULL) == (ob->data == NULL))
191 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s router:\n "
192 "%sone of \"file\" or \"data\" must be specified",
193 rblock->name, (ob->file == NULL)? "" : "only ");
195 /* Onetime aliases can only be real addresses. Headers can't be manipulated.
196 The combination of one_time and unseen is not allowed. We can't check the
197 expansion of "unseen" here, but we assume that if it is set to anything other
198 than false, there is likely to be a problem. */
202 ob->forbid_pipe = ob->forbid_file = ob->forbid_filter_reply = TRUE;
203 if (rblock->extra_headers || rblock->remove_headers)
204 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s router:\n "
205 "\"headers_add\" and \"headers_remove\" are not permitted with "
206 "\"one_time\"", rblock->name);
207 if (rblock->unseen || rblock->expand_unseen)
208 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s router:\n "
209 "\"unseen\" may not be used with \"one_time\"", rblock->name);
212 /* The defaults for check_owner and check_group depend on other settings. The
213 defaults are: Check the owner if check_local_user or owners is set; check the
214 group if check_local_user is set without a restriction on the group write bit,
215 or if owngroups is set. */
217 if (ob->check_owner == TRUE_UNSET)
218 ob->check_owner = rblock->check_local_user ||
219 (ob->owners && ob->owners[0] != 0);
221 if (ob->check_group == TRUE_UNSET)
222 ob->check_group = (rblock->check_local_user && (ob->modemask & 020) == 0) ||
223 (ob->owngroups != NULL && ob->owngroups[0] != 0);
225 /* If explicit qualify domain set, the preserve option is locked out */
227 if (ob->qualify_domain && ob->qualify_preserve_domain)
228 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s router:\n "
229 "only one of \"qualify_domain\" or \"qualify_preserve_domain\" must be set",
232 /* If allow_filter is set, either user or check_local_user must be set. */
234 if (!rblock->check_local_user &&
236 rblock->expand_uid == NULL &&
237 (ob->bit_options & RDO_FILTER) != 0)
238 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s router:\n "
239 "\"user\" or \"check_local_user\" must be set with \"allow_filter\"",
245 /*************************************************
246 * Get errors address and header mods *
247 *************************************************/
249 /* This function is called when new addresses are generated, in order to
250 sort out errors address and header modifications. We put the errors address
251 into the parent address (even though it is never used from there because that
252 address is never transported) so that it can be retrieved if any of the
253 children gets routed by an "unseen" router. The clone of the child that is
254 passed on must have the original errors_address value.
257 rblock the router control block
258 addr the address being routed
259 verify v_none/v_recipient/v_sender/v_expn
260 addr_prop point to the propagated block, which is where the
261 new values are to be placed
263 Returns: the result of rf_get_errors_address() or rf_get_munge_headers(),
264 which is either OK or DEFER
268 sort_errors_and_headers(router_instance *rblock, address_item *addr,
269 int verify, address_item_propagated *addr_prop)
271 int frc = rf_get_errors_address(addr, rblock, verify,
272 &addr_prop->errors_address);
273 if (frc != OK) return frc;
274 addr->prop.errors_address = addr_prop->errors_address;
275 return rf_get_munge_headers(addr, rblock, &addr_prop->extra_headers,
276 &addr_prop->remove_headers);
281 /*************************************************
282 * Process a set of generated new addresses *
283 *************************************************/
285 /* This function sets up a set of newly generated child addresses and puts them
286 on the new address chain. Copy in the uid, gid and permission flags for use by
287 pipes and files, set the parent, and "or" its af_ignore_error flag. Also record
288 the setting for any starting router.
290 If the generated address is the same as one of its ancestors, and the
291 check_ancestor flag is set, do not use this generated address, but replace it
292 with a copy of the input address. This is to cope with cases where A is aliased
293 to B and B has a .forward file pointing to A, though it is usually set on the
294 forwardfile rather than the aliasfile. We can't just pass on the old
295 address by returning FAIL, because it must act as a general parent for
296 generated addresses, and only get marked "done" when all its children are
301 addr_new new address chain
302 addr original address
303 generated list of generated addresses
304 addr_prop the propagated block, containing the errors_address,
305 header modification stuff, and address_data
306 ugidptr points to uid/gid data for files, pipes, autoreplies
307 pw password entry, set if ob->check_local_user is TRUE
313 add_generated(router_instance *rblock, address_item **addr_new,
314 address_item *addr, address_item *generated,
315 address_item_propagated *addr_prop, ugid_block *ugidptr, struct passwd *pw)
317 redirect_router_options_block *ob =
318 (redirect_router_options_block *)(rblock->options_block);
322 address_item *parent;
323 address_item *next = generated;
324 uschar *errors_address = next->prop.errors_address;
326 generated = next->next;
328 next->start_router = rblock->redirect_router;
329 if (addr->child_count == USHRT_MAX)
330 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "%s router generated more than %d "
331 "child addresses for <%s>", rblock->name, USHRT_MAX, addr->address);
334 next->next = *addr_new;
337 /* Don't do the "one_time" thing for the first pass of a 2-stage queue run. */
339 if (ob->one_time && !f.queue_2stage)
341 for (parent = addr; parent->parent; parent = parent->parent) ;
342 next->onetime_parent = parent->address;
345 if (ob->hide_child_in_errmsg) setflag(next, af_hide_child);
347 /* If check_ancestor is set, we want to know if any ancestor of this address
348 is the address we are about to generate. The check must be done caselessly
349 unless the ancestor was routed by a case-sensitive router. */
351 if (ob->check_ancestor)
352 for (parent = addr; parent; parent = parent->parent)
353 if ((parent->router && parent->router->caseful_local_part
354 ? Ustrcmp(next->address, parent->address)
355 : strcmpic(next->address, parent->address)
358 DEBUG(D_route) debug_printf("generated parent replaced by child\n");
359 next->address = string_copy(addr->address);
363 /* A user filter may, under some circumstances, set up an errors address.
364 If so, we must take care to re-instate it when we copy in the propagated
365 data so that it overrides any errors_to setting on the router. */
368 BOOL ignore_error = next->prop.ignore_error;
369 next->prop = *addr_prop;
370 next->prop.ignore_error = ignore_error || addr->prop.ignore_error;
372 if (errors_address) next->prop.errors_address = errors_address;
374 /* For pipes, files, and autoreplies, record this router as handling them,
375 because they don't go through the routing process again. Then set up uid,
376 gid, home and current directories for transporting. */
378 if (testflag(next, af_pfr))
380 next->router = rblock;
381 rf_set_ugid(next, ugidptr); /* Will contain pw values if not overridden */
383 /* When getting the home directory out of the password information, wrap it
384 in \N...\N to avoid expansion later. In Cygwin, home directories can
385 contain $ characters. */
387 if (rblock->home_directory != NULL)
388 next->home_dir = rblock->home_directory;
389 else if (rblock->check_local_user)
390 next->home_dir = string_sprintf("\\N%s\\N", pw->pw_dir);
391 else if (rblock->router_home_directory != NULL &&
392 testflag(addr, af_home_expanded))
394 next->home_dir = deliver_home;
395 setflag(next, af_home_expanded);
398 next->current_dir = rblock->current_directory;
400 /* Permission options */
402 if (!ob->forbid_pipe) setflag(next, af_allow_pipe);
403 if (!ob->forbid_file) setflag(next, af_allow_file);
404 if (!ob->forbid_filter_reply) setflag(next, af_allow_reply);
406 /* If the transport setting fails, the error gets picked up at the outer
407 level from the setting of basic_errno in the address. */
409 if (next->address[0] == '|')
411 address_pipe = next->address;
412 if (rf_get_transport(ob->pipe_transport_name, &(ob->pipe_transport),
413 next, rblock->name, US"pipe_transport"))
414 next->transport = ob->pipe_transport;
417 else if (next->address[0] == '>')
419 if (rf_get_transport(ob->reply_transport_name, &(ob->reply_transport),
420 next, rblock->name, US"reply_transport"))
421 next->transport = ob->reply_transport;
423 else /* must be file or directory */
425 int len = Ustrlen(next->address);
426 address_file = next->address;
427 if (next->address[len-1] == '/')
429 if (rf_get_transport(ob->directory_transport_name,
430 &(ob->directory_transport), next, rblock->name,
431 US"directory_transport"))
432 next->transport = ob->directory_transport;
436 if (rf_get_transport(ob->file_transport_name, &(ob->file_transport),
437 next, rblock->name, US"file_transport"))
438 next->transport = ob->file_transport;
445 if (!next->prop.utf8_msg)
446 next->prop.utf8_msg = string_is_utf8(next->address)
447 || (sender_address && string_is_utf8(sender_address));
452 debug_printf("%s router generated %s\n %serrors_to=%s transport=%s\n",
455 testflag(next, af_pfr)? "pipe, file, or autoreply\n " : "",
456 next->prop.errors_address,
457 (next->transport == NULL)? US"NULL" : next->transport->name);
459 if (testflag(next, af_uid_set))
460 debug_printf(" uid=%ld ", (long int)(next->uid));
462 debug_printf(" uid=unset ");
464 if (testflag(next, af_gid_set))
465 debug_printf("gid=%ld ", (long int)(next->gid));
467 debug_printf("gid=unset ");
470 if (next->prop.utf8_msg) debug_printf("utf8 ");
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 const 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;
543 addr_prop.variables = NULL;
544 tree_dup((tree_node **)&addr_prop.variables, addr->prop.variables);
546 #ifdef EXPERIMENTAL_SRS
547 addr_prop.srs_sender = NULL;
550 addr_prop.utf8_msg = addr->prop.utf8_msg;
551 addr_prop.utf8_downcvt = addr->prop.utf8_downcvt;
552 addr_prop.utf8_downcvt_maybe = addr->prop.utf8_downcvt_maybe;
556 /* When verifying and testing addresses, the "logwrite" command in filters
559 if (verify == v_none && !f.address_test_mode) options |= RDO_REALLOG;
561 /* Sort out the fixed or dynamic uid/gid. This uid is used (a) for reading the
562 file (and interpreting a filter) and (b) for running the transports for
563 generated file and pipe addresses. It is not (necessarily) the same as the uids
564 that may own the file. Exim panics if an expanded string is not a number and
565 can't be found in the password file. Other errors set the freezing bit. */
567 if (!rf_get_ugid(rblock, addr, &ugid)) return DEFER;
569 if (!ugid.uid_set && pw != NULL)
571 ugid.uid = pw->pw_uid;
575 if (!ugid.gid_set && pw != NULL)
577 ugid.gid = pw->pw_gid;
581 #ifdef EXPERIMENTAL_SRS
582 /* Perform SRS on recipient/return-path as required */
588 if(ob->srs_condition != NULL)
589 usesrs = expand_check_condition(ob->srs_condition, "srs_condition expansion failed", NULL);
593 int srs_action = 0, n_srs;
597 /* What are we doing? */
598 if(Ustrcmp(ob->srs, "forward") == 0)
600 else if(Ustrcmp(ob->srs, "reverseandforward") == 0)
604 if((ob->srs_dbinsert == NULL) ^ (ob->srs_dbselect == NULL))
607 else if(Ustrcmp(ob->srs, "reverse") == 0)
613 srs_orig_recipient = addr->address;
617 eximsrs_db_set(TRUE, ob->srs_dbselect);
618 /* Comment this out for now...
620 // eximsrs_db_set(TRUE, NULL);
623 if((n_srs = eximsrs_reverse(&res, addr->address)) == OK)
627 debug_printf("SRS (reverse): Recipient '%s' rewritten to '%s'\n", srs_orig_recipient, srs_recipient);
637 /* No point in actually performing SRS if we are just verifying a recipient */
638 if((srs_action & 1) && verify == v_none &&
639 (sender_address ? sender_address[0] != 0 : FALSE))
642 srs_orig_sender = sender_address;
645 eximsrs_db_set(FALSE, ob->srs_dbinsert);
646 /* Comment this out for now...
648 // eximsrs_db_set(FALSE, NULL);
651 if (!(usedomain = ob->srs_alias ? expand_string(ob->srs_alias) : NULL))
652 usedomain = string_copy(deliver_domain);
654 if((n_srs = eximsrs_forward(&res, sender_address, usedomain)) == OK)
656 addr_prop.srs_sender = res;
658 debug_printf("SRS (forward): Sender '%s' rewritten to '%s'\n", srs_orig_sender, res);
670 /* Call the function that interprets redirection data, either inline or from a
671 file. This is a separate function so that the system filter can use it. It will
672 run the function in a subprocess if necessary. If qualify_preserve_domain is
673 set, temporarily reset qualify_domain_recipient to the current domain so that
674 any unqualified addresses get qualified with the same domain as the incoming
675 address. Otherwise, if a local qualify_domain is provided, set that up. */
677 if (ob->qualify_preserve_domain)
678 qualify_domain_recipient = addr->domain;
679 else if (ob->qualify_domain)
681 uschar *new_qdr = rf_expand_data(addr, ob->qualify_domain, &xrc);
682 if (!new_qdr) return xrc;
683 qualify_domain_recipient = new_qdr;
686 redirect.owners = ob->owners;
687 redirect.owngroups = ob->owngroups;
688 redirect.modemask = ob->modemask;
689 redirect.check_owner = ob->check_owner;
690 redirect.check_group = ob->check_group;
693 redirect.string = (redirect.isfile = (ob->file != NULL))
694 ? ob->file : ob->data;
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);
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 (!f.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), FALSE);
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 ? "redirect" : "filter",
804 ob->data ? "data" : "file",
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 || f.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 && !f.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 /* Set the data that propagates. */
892 next->prop = addr_prop;
894 DEBUG(D_route) debug_printf("%s router autogenerated %s\n%s%s%s",
897 (addr_prop.errors_address != NULL)? " errors to " : "",
898 (addr_prop.errors_address != NULL)? addr_prop.errors_address : US"",
899 (addr_prop.errors_address != NULL)? "\n" : "");
902 /* Control gets here only when the address has been completely handled. Put the
903 original address onto the succeed queue so that any retry items that get
904 attached to it get processed. */
906 addr->next = *addr_succeed;
907 *addr_succeed = addr;
912 #endif /*!MACRO_PREDEF*/
913 /* End of routers/redirect.c */