1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
5 /* Copyright (c) The Exim Maintainers 2020 - 2022 */
6 /* Copyright (c) University of Cambridge 1995 - 2018 */
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 { "syntax_errors_text", opt_stringptr, LOFF(syntax_errors_text) },
97 { "syntax_errors_to", opt_stringptr, LOFF(syntax_errors_to) }
100 /* Size of the options list. An extern variable has to be used so that its
101 address can appear in the tables drtables.c. */
103 int redirect_router_options_count =
104 sizeof(redirect_router_options)/sizeof(optionlist);
110 redirect_router_options_block redirect_router_option_defaults = {0};
111 void redirect_router_init(router_instance *rblock) {}
112 int redirect_router_entry(router_instance *rblock, address_item *addr,
113 struct passwd *pw, int verify, address_item **addr_local,
114 address_item **addr_remote, address_item **addr_new,
115 address_item **addr_succeed) {return 0;}
117 #else /*!MACRO_PREDEF*/
121 /* Default private options block for the redirect router. */
123 redirect_router_options_block redirect_router_option_defaults = {
124 NULL, /* directory_transport */
125 NULL, /* file_transport */
126 NULL, /* pipe_transport */
127 NULL, /* reply_transport */
129 NULL, /* directory_transport_name */
132 NULL, /* file_transport_name */
133 NULL, /* include_directory */
134 NULL, /* pipe_transport_name */
135 NULL, /* reply_transport_name */
136 NULL, /* sieve_subaddress */
137 NULL, /* sieve_useraddress */
138 NULL, /* sieve_vacation_directory */
139 NULL, /* sieve_enotify_mailto_owner */
140 NULL, /* syntax_errors_text */
141 NULL, /* syntax_errors_to */
142 NULL, /* qualify_domain */
144 NULL, /* owngroups */
146 RDO_REWRITE | RDO_PREPEND_HOME, /* bit_options */
147 FALSE, /* check_ancestor */
148 TRUE_UNSET, /* check_owner */
149 TRUE_UNSET, /* check_group */
150 FALSE, /* forbid_file */
151 FALSE, /* forbid_filter_reply */
152 FALSE, /* forbid_pipe */
153 FALSE, /* forbid_smtp_code */
154 FALSE, /* hide_child_in_errmsg */
155 FALSE, /* one_time */
156 FALSE, /* qualify_preserve_domain */
157 FALSE /* skip_syntax_errors */
162 /*************************************************
163 * Initialization entry point *
164 *************************************************/
166 /* Called for each instance, after its options have been read, to enable
167 consistency checks to be done, or anything else that needs to be set up. */
169 void redirect_router_init(router_instance *rblock)
171 redirect_router_options_block *ob =
172 (redirect_router_options_block *)(rblock->options_block);
174 /* Either file or data must be set, but not both */
176 if ((ob->file == NULL) == (ob->data == NULL))
177 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s router:\n "
178 "%sone of \"file\" or \"data\" must be specified",
179 rblock->name, (ob->file == NULL)? "" : "only ");
181 /* Onetime aliases can only be real addresses. Headers can't be manipulated.
182 The combination of one_time and unseen is not allowed. We can't check the
183 expansion of "unseen" here, but we assume that if it is set to anything other
184 than false, there is likely to be a problem. */
188 ob->forbid_pipe = ob->forbid_file = ob->forbid_filter_reply = TRUE;
189 if (rblock->extra_headers || rblock->remove_headers)
190 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s router:\n "
191 "\"headers_add\" and \"headers_remove\" are not permitted with "
192 "\"one_time\"", rblock->name);
193 if (rblock->unseen || rblock->expand_unseen)
194 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s router:\n "
195 "\"unseen\" may not be used with \"one_time\"", rblock->name);
198 /* The defaults for check_owner and check_group depend on other settings. The
199 defaults are: Check the owner if check_local_user or owners is set; check the
200 group if check_local_user is set without a restriction on the group write bit,
201 or if owngroups is set. */
203 if (ob->check_owner == TRUE_UNSET)
204 ob->check_owner = rblock->check_local_user ||
205 (ob->owners && ob->owners[0] != 0);
207 if (ob->check_group == TRUE_UNSET)
208 ob->check_group = (rblock->check_local_user && (ob->modemask & 020) == 0) ||
209 (ob->owngroups != NULL && ob->owngroups[0] != 0);
211 /* If explicit qualify domain set, the preserve option is locked out */
213 if (ob->qualify_domain && ob->qualify_preserve_domain)
214 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s router:\n "
215 "only one of \"qualify_domain\" or \"qualify_preserve_domain\" must be set",
218 /* If allow_filter is set, either user or check_local_user must be set. */
220 if (!rblock->check_local_user &&
222 rblock->expand_uid == NULL &&
223 (ob->bit_options & RDO_FILTER) != 0)
224 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s router:\n "
225 "\"user\" or \"check_local_user\" must be set with \"allow_filter\"",
231 /*************************************************
232 * Get errors address and header mods *
233 *************************************************/
235 /* This function is called when new addresses are generated, in order to
236 sort out errors address and header modifications. We put the errors address
237 into the parent address (even though it is never used from there because that
238 address is never transported) so that it can be retrieved if any of the
239 children gets routed by an "unseen" router. The clone of the child that is
240 passed on must have the original errors_address value.
243 rblock the router control block
244 addr the address being routed
245 verify v_none/v_recipient/v_sender/v_expn
246 addr_prop point to the propagated block, which is where the
247 new values are to be placed
249 Returns: the result of rf_get_errors_address() or rf_get_munge_headers(),
250 which is either OK or DEFER
254 sort_errors_and_headers(router_instance *rblock, address_item *addr,
255 int verify, address_item_propagated *addr_prop)
257 int frc = rf_get_errors_address(addr, rblock, verify,
258 &addr_prop->errors_address);
259 if (frc != OK) return frc;
260 addr->prop.errors_address = addr_prop->errors_address;
261 return rf_get_munge_headers(addr, rblock, &addr_prop->extra_headers,
262 &addr_prop->remove_headers);
267 /*************************************************
268 * Process a set of generated new addresses *
269 *************************************************/
271 /* This function sets up a set of newly generated child addresses and puts them
272 on the new address chain. Copy in the uid, gid and permission flags for use by
273 pipes and files, set the parent, and "or" its af_ignore_error flag. Also record
274 the setting for any starting router.
276 If the generated address is the same as one of its ancestors, and the
277 check_ancestor flag is set, do not use this generated address, but replace it
278 with a copy of the input address. This is to cope with cases where A is aliased
279 to B and B has a .forward file pointing to A, though it is usually set on the
280 forwardfile rather than the aliasfile. We can't just pass on the old
281 address by returning FAIL, because it must act as a general parent for
282 generated addresses, and only get marked "done" when all its children are
287 addr_new new address chain
288 addr original address
289 generated list of generated addresses
290 addr_prop the propagated block, containing the errors_address,
291 header modification stuff, and address_data
292 ugidptr points to uid/gid data for files, pipes, autoreplies
293 pw password entry, set if ob->check_local_user is TRUE
299 add_generated(router_instance *rblock, address_item **addr_new,
300 address_item *addr, address_item *generated,
301 address_item_propagated *addr_prop, ugid_block *ugidptr, struct passwd *pw)
303 redirect_router_options_block *ob =
304 (redirect_router_options_block *)(rblock->options_block);
308 address_item *parent;
309 address_item *next = generated;
310 uschar *errors_address = next->prop.errors_address;
312 generated = next->next;
314 next->start_router = rblock->redirect_router;
315 if (addr->child_count == USHRT_MAX)
316 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "%s router generated more than %d "
317 "child addresses for <%s>", rblock->name, USHRT_MAX, addr->address);
320 next->next = *addr_new;
323 /* Don't do the "one_time" thing for the first pass of a 2-stage queue run. */
325 if (ob->one_time && !f.queue_2stage)
327 for (parent = addr; parent->parent; parent = parent->parent) ;
328 next->onetime_parent = parent->address;
331 if (ob->hide_child_in_errmsg) setflag(next, af_hide_child);
333 /* If check_ancestor is set, we want to know if any ancestor of this address
334 is the address we are about to generate. The check must be done caselessly
335 unless the ancestor was routed by a case-sensitive router. */
337 if (ob->check_ancestor)
338 for (parent = addr; parent; parent = parent->parent)
339 if ((parent->router && parent->router->caseful_local_part
340 ? Ustrcmp(next->address, parent->address)
341 : strcmpic(next->address, parent->address)
344 DEBUG(D_route) debug_printf("generated parent replaced by child\n");
345 next->address = string_copy(addr->address);
349 /* A user filter may, under some circumstances, set up an errors address.
350 If so, we must take care to re-instate it when we copy in the propagated
351 data so that it overrides any errors_to setting on the router. */
354 BOOL ignore_error = next->prop.ignore_error;
355 next->prop = *addr_prop;
356 next->prop.ignore_error = ignore_error || addr->prop.ignore_error;
358 if (errors_address) next->prop.errors_address = errors_address;
360 /* For pipes, files, and autoreplies, record this router as handling them,
361 because they don't go through the routing process again. Then set up uid,
362 gid, home and current directories for transporting. */
364 if (testflag(next, af_pfr))
366 next->router = rblock;
367 rf_set_ugid(next, ugidptr); /* Will contain pw values if not overridden */
369 /* When getting the home directory out of the password information, wrap it
370 in \N...\N to avoid expansion later. In Cygwin, home directories can
371 contain $ characters. */
373 if (rblock->home_directory != NULL)
374 next->home_dir = rblock->home_directory;
375 else if (rblock->check_local_user)
376 next->home_dir = string_sprintf("\\N%s\\N", pw->pw_dir);
377 else if (rblock->router_home_directory != NULL &&
378 testflag(addr, af_home_expanded))
380 next->home_dir = deliver_home;
381 setflag(next, af_home_expanded);
384 next->current_dir = rblock->current_directory;
386 /* Permission options */
388 if (!ob->forbid_pipe) setflag(next, af_allow_pipe);
389 if (!ob->forbid_file) setflag(next, af_allow_file);
390 if (!ob->forbid_filter_reply) setflag(next, af_allow_reply);
392 /* If the transport setting fails, the error gets picked up at the outer
393 level from the setting of basic_errno in the address. */
395 if (next->address[0] == '|')
397 address_pipe = next->address;
398 if (rf_get_transport(ob->pipe_transport_name, &ob->pipe_transport,
399 next, rblock->name, US"pipe_transport"))
400 next->transport = ob->pipe_transport;
403 else if (next->address[0] == '>')
405 if (rf_get_transport(ob->reply_transport_name, &ob->reply_transport,
406 next, rblock->name, US"reply_transport"))
407 next->transport = ob->reply_transport;
409 else /* must be file or directory */
411 int len = Ustrlen(next->address);
412 address_file = next->address;
413 if (next->address[len-1] == '/')
415 if (rf_get_transport(ob->directory_transport_name,
416 &(ob->directory_transport), next, rblock->name,
417 US"directory_transport"))
418 next->transport = ob->directory_transport;
421 if (rf_get_transport(ob->file_transport_name, &ob->file_transport,
422 next, rblock->name, US"file_transport"))
423 next->transport = ob->file_transport;
430 if (!next->prop.utf8_msg)
431 next->prop.utf8_msg = string_is_utf8(next->address)
432 || (sender_address && string_is_utf8(sender_address));
437 debug_printf("%s router generated %s\n %serrors_to=%s transport=%s\n",
440 testflag(next, af_pfr)? "pipe, file, or autoreply\n " : "",
441 next->prop.errors_address,
442 (next->transport == NULL)? US"NULL" : next->transport->name);
444 if (testflag(next, af_uid_set))
445 debug_printf(" uid=%ld ", (long int)(next->uid));
447 debug_printf(" uid=unset ");
449 if (testflag(next, af_gid_set))
450 debug_printf("gid=%ld ", (long int)(next->gid));
452 debug_printf("gid=unset ");
455 if (next->prop.utf8_msg) debug_printf("utf8 ");
458 debug_printf("home=%s\n", next->home_dir);
464 /*************************************************
466 *************************************************/
468 /* See local README for interface description. This router returns:
471 . empty address list, or filter did nothing significant
474 . verifying the errors address caused a deferment or a big disaster such
475 as an expansion failure (rf_get_errors_address)
476 . expanding a headers_{add,remove} string caused a deferment or another
477 expansion error (rf_get_munge_headers)
478 . :defer: or "freeze" in a filter
479 . error in address list or filter
480 . skipped syntax errors, but failed to send the message
483 . address was :blackhole:d or "seen finish"ed
489 . new addresses added to addr_new
492 int redirect_router_entry(
493 router_instance *rblock, /* data for this instantiation */
494 address_item *addr, /* address we are working on */
495 struct passwd *pw, /* passwd entry after check_local_user */
496 int verify, /* v_none/v_recipient/v_sender/v_expn */
497 address_item **addr_local, /* add it to this if it's local */
498 address_item **addr_remote, /* add it to this if it's remote */
499 address_item **addr_new, /* put new addresses on here */
500 address_item **addr_succeed) /* put old address here on success */
502 redirect_router_options_block *ob =
503 (redirect_router_options_block *)(rblock->options_block);
504 address_item *generated = NULL;
505 const uschar *save_qualify_domain_recipient = qualify_domain_recipient;
506 uschar *discarded = US"discarded";
507 address_item_propagated addr_prop;
508 error_block *eblock = NULL;
510 redirect_block redirect;
511 int filtertype = FILTER_UNSET;
513 int options = ob->bit_options;
517 /* Initialize the data to be propagated to the children */
519 addr_prop.address_data = deliver_address_data;
520 addr_prop.domain_data = deliver_domain_data;
521 addr_prop.localpart_data = deliver_localpart_data;
522 addr_prop.errors_address = NULL;
523 addr_prop.extra_headers = NULL;
524 addr_prop.remove_headers = NULL;
525 addr_prop.variables = NULL;
526 tree_dup((tree_node **)&addr_prop.variables, addr->prop.variables);
529 addr_prop.utf8_msg = addr->prop.utf8_msg;
530 addr_prop.utf8_downcvt = addr->prop.utf8_downcvt;
531 addr_prop.utf8_downcvt_maybe = addr->prop.utf8_downcvt_maybe;
535 /* When verifying and testing addresses, the "logwrite" command in filters
538 if (verify == v_none && !f.address_test_mode) options |= RDO_REALLOG;
540 /* Sort out the fixed or dynamic uid/gid. This uid is used (a) for reading the
541 file (and interpreting a filter) and (b) for running the transports for
542 generated file and pipe addresses. It is not (necessarily) the same as the uids
543 that may own the file. Exim panics if an expanded string is not a number and
544 can't be found in the password file. Other errors set the freezing bit. */
546 if (!rf_get_ugid(rblock, addr, &ugid)) return DEFER;
548 if (!ugid.uid_set && pw != NULL)
550 ugid.uid = pw->pw_uid;
554 if (!ugid.gid_set && pw != NULL)
556 ugid.gid = pw->pw_gid;
560 /* Call the function that interprets redirection data, either inline or from a
561 file. This is a separate function so that the system filter can use it. It will
562 run the function in a subprocess if necessary. If qualify_preserve_domain is
563 set, temporarily reset qualify_domain_recipient to the current domain so that
564 any unqualified addresses get qualified with the same domain as the incoming
565 address. Otherwise, if a local qualify_domain is provided, set that up. */
567 if (ob->qualify_preserve_domain)
568 qualify_domain_recipient = addr->domain;
569 else if (ob->qualify_domain)
571 uschar *new_qdr = rf_expand_data(addr, ob->qualify_domain, &xrc);
572 if (!new_qdr) return xrc;
573 qualify_domain_recipient = new_qdr;
576 redirect.owners = ob->owners;
577 redirect.owngroups = ob->owngroups;
578 redirect.modemask = ob->modemask;
579 redirect.check_owner = ob->check_owner;
580 redirect.check_group = ob->check_group;
583 redirect.string = (redirect.isfile = (ob->file != NULL))
584 ? ob->file : ob->data;
586 frc = rda_interpret(&redirect, options, ob->include_directory,
587 ob->sieve_vacation_directory, ob->sieve_enotify_mailto_owner,
588 ob->sieve_useraddress, ob->sieve_subaddress, &ugid, &generated,
589 &addr->message, ob->skip_syntax_errors? &eblock : NULL, &filtertype,
590 string_sprintf("%s router (recipient is %s)", rblock->name, addr->address));
592 qualify_domain_recipient = save_qualify_domain_recipient;
594 /* Handle exceptional returns from filtering or processing an address list.
595 For FAIL and FREEZE we honour any previously set up deliveries by a filter. */
600 addr->message = addr->user_message = NULL;
604 DEBUG(D_route) debug_printf("address :blackhole:d\n");
606 discarded = US":blackhole:";
610 /* FF_DEFER and FF_FAIL can arise only as a result of explicit commands
611 (:defer: or :fail: in an alias file or "fail" in a filter). If a configured
612 message was supplied, allow it to be included in an SMTP response after
613 verifying. Remove any SMTP code if it is not allowed. */
620 if ((xrc = sort_errors_and_headers(rblock, addr, verify, &addr_prop)) != OK)
622 add_generated(rblock, addr_new, addr, generated, &addr_prop, &ugid, pw);
627 addr->message = yield == FAIL ? US"forced rejection" : US"forced defer";
631 if ( ob->forbid_smtp_code
632 && regex_match(regex_smtp_code, addr->message, -1, &matched))
634 DEBUG(D_route) debug_printf("SMTP code at start of error message "
635 "is ignored because forbid_smtp_code is set\n");
636 addr->message += Ustrlen(matched);
638 addr->user_message = addr->message;
639 setflag(addr, af_pass_message);
643 /* As in the case of a system filter, a freeze does not happen after a manual
644 thaw. In case deliveries were set up by the filter, we set the child count
645 high so that their completion does not mark the original address done. */
648 if (!f.deliver_manual_thaw)
650 if ((xrc = sort_errors_and_headers(rblock, addr, verify, &addr_prop))
652 add_generated(rblock, addr_new, addr, generated, &addr_prop, &ugid, pw);
653 if (addr->message == NULL) addr->message = US"frozen by filter";
654 addr->special_action = SPECIAL_FREEZE;
655 addr->child_count = 9999;
658 frc = FF_NOTDELIVERED;
661 /* Handle syntax errors and :include: failures and lookup defers */
666 /* If filtertype is still FILTER_UNSET, it means that the redirection data
667 was never inspected, so the error was an expansion failure or failure to open
668 the file, or whatever. In these cases, the existing error message is probably
671 if (filtertype == FILTER_UNSET) return DEFER;
673 /* If it was a filter and skip_syntax_errors is set, we want to set up
674 the error message so that it can be logged and mailed to somebody. */
676 if (filtertype != FILTER_FORWARD && ob->skip_syntax_errors)
678 eblock = store_get(sizeof(error_block), GET_UNTAINTED);
680 eblock->text1 = addr->message;
681 eblock->text2 = NULL;
682 addr->message = addr->user_message = NULL;
685 /* Otherwise set up the error for the address and defer. */
689 addr->basic_errno = ERRNO_BADREDIRECT;
690 addr->message = string_sprintf("error in %s %s: %s",
691 filtertype == FILTER_FORWARD ? "redirect" : "filter",
692 ob->data ? "data" : "file",
699 /* Yield is either FF_DELIVERED (significant action) or FF_NOTDELIVERED (no
700 significant action). Before dealing with these, however, we must handle the
701 effect of skip_syntax_errors.
703 If skip_syntax_errors was set and there were syntax errors in an address list,
704 error messages will be present in eblock. Log them and send a message if so
705 configured. We cannot do this earlier, because the error message must not be
706 sent as the local user. If there were no valid addresses, generated will be
707 NULL. In this case, the router declines.
709 For a filter file, the error message has been fudged into an eblock. After
710 dealing with it, the router declines. */
714 if (!moan_skipped_syntax_errors(
715 rblock->name, /* For message content */
717 (verify != v_none || f.address_test_mode)?
718 NULL : ob->syntax_errors_to, /* Who to mail */
719 generated != NULL, /* True if not all failed */
720 ob->syntax_errors_text)) /* Custom message */
723 if (filtertype != FILTER_FORWARD || generated == NULL)
725 addr->message = US"syntax error in redirection data";
730 /* Sort out the errors address and any header modifications, and handle the
731 generated addresses, if any. If there are no generated addresses, we must avoid
732 calling sort_errors_and_headers() in case this router declines - that function
733 may modify the errors_address field in the current address, and we don't want
734 to do that for a decline. */
736 if (generated != NULL)
738 if ((xrc = sort_errors_and_headers(rblock, addr, verify, &addr_prop)) != OK)
740 add_generated(rblock, addr_new, addr, generated, &addr_prop, &ugid, pw);
743 /* FF_DELIVERED with no generated addresses is what we get when an address list
744 contains :blackhole: or a filter contains "seen finish" without having
745 generated anything. Log what happened to this address, and return DISCARD. */
747 if (frc == FF_DELIVERED)
749 if (generated == NULL && verify == v_none && !f.address_test_mode)
751 log_write(0, LOG_MAIN, "=> %s <%s> R=%s", discarded, addr->address,
757 /* For an address list, FF_NOTDELIVERED always means that no addresses were
758 generated. For a filter, addresses may or may not have been generated. If none
759 were, it's the same as an empty address list, and the router declines. However,
760 if addresses were generated, we can't just decline because successful delivery
761 of the base address gets it marked "done", so deferred generated addresses
762 never get tried again. We have to generate a new version of the base address,
763 as if there were a "deliver" command in the filter file, with the original
764 address as parent. */
770 if (generated == NULL) return DECLINE;
772 next = deliver_make_addr(addr->address, FALSE);
775 next->next = *addr_new;
778 /* Set the data that propagates. */
780 next->prop = addr_prop;
782 DEBUG(D_route) debug_printf("%s router autogenerated %s\n%s%s%s",
785 (addr_prop.errors_address != NULL)? " errors to " : "",
786 (addr_prop.errors_address != NULL)? addr_prop.errors_address : US"",
787 (addr_prop.errors_address != NULL)? "\n" : "");
790 /* Control gets here only when the address has been completely handled. Put the
791 original address onto the succeed queue so that any retry items that get
792 attached to it get processed. */
794 addr->next = *addr_succeed;
795 *addr_succeed = addr;
800 #endif /*!MACRO_PREDEF*/
801 /* End of routers/redirect.c */