1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
5 /* Copyright (c) University of Cambridge 1995 - 2016 */
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);
140 redirect_router_options_block redirect_router_option_defaults = {0};
141 void redirect_router_init(router_instance *rblock) {}
142 int redirect_router_entry(router_instance *rblock, address_item *addr,
143 struct passwd *pw, int verify, address_item **addr_local,
144 address_item **addr_remote, address_item **addr_new,
145 address_item **addr_succeed) {return 0;}
147 #else /*!MACRO_PREDEF*/
151 /* Default private options block for the redirect router. */
153 redirect_router_options_block redirect_router_option_defaults = {
154 NULL, /* directory_transport */
155 NULL, /* file_transport */
156 NULL, /* pipe_transport */
157 NULL, /* reply_transport */
159 NULL, /* directory_transport_name */
162 NULL, /* file_transport_name */
163 NULL, /* include_directory */
164 NULL, /* pipe_transport_name */
165 NULL, /* reply_transport_name */
166 NULL, /* sieve_subaddress */
167 NULL, /* sieve_useraddress */
168 NULL, /* sieve_vacation_directory */
169 NULL, /* sieve_enotify_mailto_owner */
170 NULL, /* syntax_errors_text */
171 NULL, /* syntax_errors_to */
172 NULL, /* qualify_domain */
174 NULL, /* owngroups */
175 #ifdef EXPERIMENTAL_SRS
177 NULL, /* srs_alias */
178 NULL, /* srs_condition */
179 NULL, /* srs_dbinsert */
180 NULL, /* srs_dbselect */
183 RDO_REWRITE | RDO_PREPEND_HOME, /* bit_options */
184 FALSE, /* check_ancestor */
185 TRUE_UNSET, /* check_owner */
186 TRUE_UNSET, /* check_group */
187 FALSE, /* forbid_file */
188 FALSE, /* forbid_filter_reply */
189 FALSE, /* forbid_pipe */
190 FALSE, /* forbid_smtp_code */
191 FALSE, /* hide_child_in_errmsg */
192 FALSE, /* one_time */
193 FALSE, /* qualify_preserve_domain */
194 FALSE /* skip_syntax_errors */
199 /*************************************************
200 * Initialization entry point *
201 *************************************************/
203 /* Called for each instance, after its options have been read, to enable
204 consistency checks to be done, or anything else that needs to be set up. */
206 void redirect_router_init(router_instance *rblock)
208 redirect_router_options_block *ob =
209 (redirect_router_options_block *)(rblock->options_block);
211 /* Either file or data must be set, but not both */
213 if ((ob->file == NULL) == (ob->data == NULL))
214 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s router:\n "
215 "%sone of \"file\" or \"data\" must be specified",
216 rblock->name, (ob->file == NULL)? "" : "only ");
218 /* Onetime aliases can only be real addresses. Headers can't be manipulated.
219 The combination of one_time and unseen is not allowed. We can't check the
220 expansion of "unseen" here, but we assume that if it is set to anything other
221 than false, there is likely to be a problem. */
225 ob->forbid_pipe = ob->forbid_file = ob->forbid_filter_reply = TRUE;
226 if (rblock->extra_headers != NULL || rblock->remove_headers != NULL)
227 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s router:\n "
228 "\"headers_add\" and \"headers_remove\" are not permitted with "
229 "\"one_time\"", rblock->name);
230 if (rblock->unseen || rblock->expand_unseen != NULL)
231 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s router:\n "
232 "\"unseen\" may not be used with \"one_time\"", rblock->name);
235 /* The defaults for check_owner and check_group depend on other settings. The
236 defaults are: Check the owner if check_local_user or owners is set; check the
237 group if check_local_user is set without a restriction on the group write bit,
238 or if owngroups is set. */
240 if (ob->check_owner == TRUE_UNSET)
241 ob->check_owner = rblock->check_local_user ||
242 (ob->owners != NULL && ob->owners[0] != 0);
244 if (ob->check_group == TRUE_UNSET)
245 ob->check_group = (rblock->check_local_user && (ob->modemask & 020) == 0) ||
246 (ob->owngroups != NULL && ob->owngroups[0] != 0);
248 /* If explicit qualify domain set, the preserve option is locked out */
250 if (ob->qualify_domain != NULL && ob->qualify_preserve_domain)
251 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s router:\n "
252 "only one of \"qualify_domain\" or \"qualify_preserve_domain\" must be set",
255 /* If allow_filter is set, either user or check_local_user must be set. */
257 if (!rblock->check_local_user &&
259 rblock->expand_uid == NULL &&
260 (ob->bit_options & RDO_FILTER) != 0)
261 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s router:\n "
262 "\"user\" or \"check_local_user\" must be set with \"allow_filter\"",
268 /*************************************************
269 * Get errors address and header mods *
270 *************************************************/
272 /* This function is called when new addresses are generated, in order to
273 sort out errors address and header modifications. We put the errors address
274 into the parent address (even though it is never used from there because that
275 address is never transported) so that it can be retrieved if any of the
276 children gets routed by an "unseen" router. The clone of the child that is
277 passed on must have the original errors_address value.
280 rblock the router control block
281 addr the address being routed
282 verify v_none/v_recipient/v_sender/v_expn
283 addr_prop point to the propagated block, which is where the
284 new values are to be placed
286 Returns: the result of rf_get_errors_address() or rf_get_munge_headers(),
287 which is either OK or DEFER
291 sort_errors_and_headers(router_instance *rblock, address_item *addr,
292 int verify, address_item_propagated *addr_prop)
294 int frc = rf_get_errors_address(addr, rblock, verify,
295 &addr_prop->errors_address);
296 if (frc != OK) return frc;
297 addr->prop.errors_address = addr_prop->errors_address;
298 return rf_get_munge_headers(addr, rblock, &addr_prop->extra_headers,
299 &addr_prop->remove_headers);
304 /*************************************************
305 * Process a set of generated new addresses *
306 *************************************************/
308 /* This function sets up a set of newly generated child addresses and puts them
309 on the new address chain. Copy in the uid, gid and permission flags for use by
310 pipes and files, set the parent, and "or" its af_ignore_error flag. Also record
311 the setting for any starting router.
313 If the generated address is the same as one of its ancestors, and the
314 check_ancestor flag is set, do not use this generated address, but replace it
315 with a copy of the input address. This is to cope with cases where A is aliased
316 to B and B has a .forward file pointing to A, though it is usually set on the
317 forwardfile rather than the aliasfile. We can't just pass on the old
318 address by returning FAIL, because it must act as a general parent for
319 generated addresses, and only get marked "done" when all its children are
324 addr_new new address chain
325 addr original address
326 generated list of generated addresses
327 addr_prop the propagated block, containing the errors_address,
328 header modification stuff, and address_data
329 ugidptr points to uid/gid data for files, pipes, autoreplies
330 pw password entry, set if ob->check_local_user is TRUE
336 add_generated(router_instance *rblock, address_item **addr_new,
337 address_item *addr, address_item *generated,
338 address_item_propagated *addr_prop, ugid_block *ugidptr, struct passwd *pw)
340 redirect_router_options_block *ob =
341 (redirect_router_options_block *)(rblock->options_block);
345 address_item *parent;
346 address_item *next = generated;
347 uschar *errors_address = next->prop.errors_address;
349 generated = next->next;
351 orflag(next, addr, af_ignore_error);
352 next->start_router = rblock->redirect_router;
353 if (addr->child_count == USHRT_MAX)
354 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "%s router generated more than %d "
355 "child addresses for <%s>", rblock->name, USHRT_MAX, addr->address);
358 next->next = *addr_new;
361 /* Don't do the "one_time" thing for the first pass of a 2-stage queue run. */
363 if (ob->one_time && !queue_2stage)
365 for (parent = addr; parent->parent; parent = parent->parent) ;
366 next->onetime_parent = parent->address;
369 if (ob->hide_child_in_errmsg) setflag(next, af_hide_child);
371 /* If check_ancestor is set, we want to know if any ancestor of this address
372 is the address we are about to generate. The check must be done caselessly
373 unless the ancestor was routed by a case-sensitive router. */
375 if (ob->check_ancestor)
376 for (parent = addr; parent; parent = parent->parent)
377 if ((parent->router && parent->router->caseful_local_part
378 ? Ustrcmp(next->address, parent->address)
379 : strcmpic(next->address, parent->address)
382 DEBUG(D_route) debug_printf("generated parent replaced by child\n");
383 next->address = string_copy(addr->address);
387 /* A user filter may, under some circumstances, set up an errors address.
388 If so, we must take care to re-instate it when we copy in the propagated
389 data so that it overrides any errors_to setting on the router. */
391 next->prop = *addr_prop;
392 if (errors_address != NULL) next->prop.errors_address = errors_address;
394 /* For pipes, files, and autoreplies, record this router as handling them,
395 because they don't go through the routing process again. Then set up uid,
396 gid, home and current directories for transporting. */
398 if (testflag(next, af_pfr))
400 next->router = rblock;
401 rf_set_ugid(next, ugidptr); /* Will contain pw values if not overridden */
403 /* When getting the home directory out of the password information, wrap it
404 in \N...\N to avoid expansion later. In Cygwin, home directories can
405 contain $ characters. */
407 if (rblock->home_directory != NULL)
408 next->home_dir = rblock->home_directory;
409 else if (rblock->check_local_user)
410 next->home_dir = string_sprintf("\\N%s\\N", pw->pw_dir);
411 else if (rblock->router_home_directory != NULL &&
412 testflag(addr, af_home_expanded))
414 next->home_dir = deliver_home;
415 setflag(next, af_home_expanded);
418 next->current_dir = rblock->current_directory;
420 /* Permission options */
422 if (!ob->forbid_pipe) setflag(next, af_allow_pipe);
423 if (!ob->forbid_file) setflag(next, af_allow_file);
424 if (!ob->forbid_filter_reply) setflag(next, af_allow_reply);
426 /* If the transport setting fails, the error gets picked up at the outer
427 level from the setting of basic_errno in the address. */
429 if (next->address[0] == '|')
431 address_pipe = next->address;
432 if (rf_get_transport(ob->pipe_transport_name, &(ob->pipe_transport),
433 next, rblock->name, US"pipe_transport"))
434 next->transport = ob->pipe_transport;
437 else if (next->address[0] == '>')
439 if (rf_get_transport(ob->reply_transport_name, &(ob->reply_transport),
440 next, rblock->name, US"reply_transport"))
441 next->transport = ob->reply_transport;
443 else /* must be file or directory */
445 int len = Ustrlen(next->address);
446 address_file = next->address;
447 if (next->address[len-1] == '/')
449 if (rf_get_transport(ob->directory_transport_name,
450 &(ob->directory_transport), next, rblock->name,
451 US"directory_transport"))
452 next->transport = ob->directory_transport;
456 if (rf_get_transport(ob->file_transport_name, &(ob->file_transport),
457 next, rblock->name, US"file_transport"))
458 next->transport = ob->file_transport;
465 next->prop.utf8_msg = string_is_utf8(next->address)
466 || (sender_address && string_is_utf8(sender_address));
471 debug_printf("%s router generated %s\n %serrors_to=%s transport=%s\n",
474 testflag(next, af_pfr)? "pipe, file, or autoreply\n " : "",
475 next->prop.errors_address,
476 (next->transport == NULL)? US"NULL" : next->transport->name);
478 if (testflag(next, af_uid_set))
479 debug_printf(" uid=%ld ", (long int)(next->uid));
481 debug_printf(" uid=unset ");
483 if (testflag(next, af_gid_set))
484 debug_printf("gid=%ld ", (long int)(next->gid));
486 debug_printf("gid=unset ");
489 if (next->prop.utf8_msg) debug_printf("utf8 ");
492 debug_printf("home=%s\n", next->home_dir);
498 /*************************************************
500 *************************************************/
502 /* See local README for interface description. This router returns:
505 . empty address list, or filter did nothing significant
508 . verifying the errors address caused a deferment or a big disaster such
509 as an expansion failure (rf_get_errors_address)
510 . expanding a headers_{add,remove} string caused a deferment or another
511 expansion error (rf_get_munge_headers)
512 . :defer: or "freeze" in a filter
513 . error in address list or filter
514 . skipped syntax errors, but failed to send the message
517 . address was :blackhole:d or "seen finish"ed
523 . new addresses added to addr_new
526 int redirect_router_entry(
527 router_instance *rblock, /* data for this instantiation */
528 address_item *addr, /* address we are working on */
529 struct passwd *pw, /* passwd entry after check_local_user */
530 int verify, /* v_none/v_recipient/v_sender/v_expn */
531 address_item **addr_local, /* add it to this if it's local */
532 address_item **addr_remote, /* add it to this if it's remote */
533 address_item **addr_new, /* put new addresses on here */
534 address_item **addr_succeed) /* put old address here on success */
536 redirect_router_options_block *ob =
537 (redirect_router_options_block *)(rblock->options_block);
538 address_item *generated = NULL;
539 const uschar *save_qualify_domain_recipient = qualify_domain_recipient;
540 uschar *discarded = US"discarded";
541 address_item_propagated addr_prop;
542 error_block *eblock = NULL;
544 redirect_block redirect;
545 int filtertype = FILTER_UNSET;
547 int options = ob->bit_options;
551 addr_local = addr_local; /* Keep picky compilers happy */
552 addr_remote = addr_remote;
554 /* Initialize the data to be propagated to the children */
556 addr_prop.address_data = deliver_address_data;
557 addr_prop.domain_data = deliver_domain_data;
558 addr_prop.localpart_data = deliver_localpart_data;
559 addr_prop.errors_address = NULL;
560 addr_prop.extra_headers = NULL;
561 addr_prop.remove_headers = NULL;
563 #ifdef EXPERIMENTAL_SRS
564 addr_prop.srs_sender = NULL;
567 addr_prop.utf8_msg = FALSE; /*XXX should we not copy this from the parent? */
568 addr_prop.utf8_downcvt = FALSE;
569 addr_prop.utf8_downcvt_maybe = FALSE;
573 /* When verifying and testing addresses, the "logwrite" command in filters
576 if (verify == v_none && !address_test_mode) options |= RDO_REALLOG;
578 /* Sort out the fixed or dynamic uid/gid. This uid is used (a) for reading the
579 file (and interpreting a filter) and (b) for running the transports for
580 generated file and pipe addresses. It is not (necessarily) the same as the uids
581 that may own the file. Exim panics if an expanded string is not a number and
582 can't be found in the password file. Other errors set the freezing bit. */
584 if (!rf_get_ugid(rblock, addr, &ugid)) return DEFER;
586 if (!ugid.uid_set && pw != NULL)
588 ugid.uid = pw->pw_uid;
592 if (!ugid.gid_set && pw != NULL)
594 ugid.gid = pw->pw_gid;
598 #ifdef EXPERIMENTAL_SRS
599 /* Perform SRS on recipient/return-path as required */
605 if(ob->srs_condition != NULL)
606 usesrs = expand_check_condition(ob->srs_condition, "srs_condition expansion failed", NULL);
610 int srs_action = 0, n_srs;
614 /* What are we doing? */
615 if(Ustrcmp(ob->srs, "forward") == 0)
617 else if(Ustrcmp(ob->srs, "reverseandforward") == 0)
621 if((ob->srs_dbinsert == NULL) ^ (ob->srs_dbselect == NULL))
624 else if(Ustrcmp(ob->srs, "reverse") == 0)
630 srs_orig_recipient = addr->address;
634 eximsrs_db_set(TRUE, ob->srs_dbselect);
635 /* Comment this out for now...
637 // eximsrs_db_set(TRUE, NULL);
640 if((n_srs = eximsrs_reverse(&res, addr->address)) == OK)
644 debug_printf("SRS (reverse): Recipient '%s' rewritten to '%s'\n", srs_orig_recipient, srs_recipient);
654 /* No point in actually performing SRS if we are just verifying a recipient */
655 if((srs_action & 1) && verify == v_none &&
656 (sender_address ? sender_address[0] != 0 : FALSE))
659 srs_orig_sender = sender_address;
662 eximsrs_db_set(FALSE, ob->srs_dbinsert);
663 /* Comment this out for now...
665 // eximsrs_db_set(FALSE, NULL);
668 if (!(usedomain = ob->srs_alias ? expand_string(ob->srs_alias) : NULL))
669 usedomain = string_copy(deliver_domain);
671 if((n_srs = eximsrs_forward(&res, sender_address, usedomain)) == OK)
673 addr_prop.srs_sender = res;
675 debug_printf("SRS (forward): Sender '%s' rewritten to '%s'\n", srs_orig_sender, res);
687 /* Call the function that interprets redirection data, either inline or from a
688 file. This is a separate function so that the system filter can use it. It will
689 run the function in a subprocess if necessary. If qualify_preserve_domain is
690 set, temporarily reset qualify_domain_recipient to the current domain so that
691 any unqualified addresses get qualified with the same domain as the incoming
692 address. Otherwise, if a local qualify_domain is provided, set that up. */
694 if (ob->qualify_preserve_domain)
695 qualify_domain_recipient = addr->domain;
696 else if (ob->qualify_domain != NULL)
698 uschar *new_qdr = rf_expand_data(addr, ob->qualify_domain, &xrc);
699 if (new_qdr == NULL) return xrc;
700 qualify_domain_recipient = new_qdr;
703 redirect.owners = ob->owners;
704 redirect.owngroups = ob->owngroups;
705 redirect.modemask = ob->modemask;
706 redirect.check_owner = ob->check_owner;
707 redirect.check_group = ob->check_group;
710 if (ob->file != NULL)
712 redirect.string = ob->file;
713 redirect.isfile = TRUE;
717 redirect.string = ob->data;
718 redirect.isfile = FALSE;
721 frc = rda_interpret(&redirect, options, ob->include_directory,
722 ob->sieve_vacation_directory, ob->sieve_enotify_mailto_owner,
723 ob->sieve_useraddress, ob->sieve_subaddress, &ugid, &generated,
724 &(addr->message), ob->skip_syntax_errors? &eblock : NULL, &filtertype,
725 string_sprintf("%s router (recipient is %s)", rblock->name, addr->address));
727 qualify_domain_recipient = save_qualify_domain_recipient;
729 /* Handle exceptional returns from filtering or processing an address list.
730 For FAIL and FREEZE we honour any previously set up deliveries by a filter. */
735 addr->message = addr->user_message = NULL;
739 DEBUG(D_route) debug_printf("address :blackhole:d\n");
741 discarded = US":blackhole:";
745 /* FF_DEFER and FF_FAIL can arise only as a result of explicit commands
746 (:defer: or :fail: in an alias file or "fail" in a filter). If a configured
747 message was supplied, allow it to be included in an SMTP response after
748 verifying. Remove any SMTP code if it is not allowed. */
755 if ((xrc = sort_errors_and_headers(rblock, addr, verify, &addr_prop)) != OK)
757 add_generated(rblock, addr_new, addr, generated, &addr_prop, &ugid, pw);
761 if (addr->message == NULL)
762 addr->message = (yield == FAIL)? US"forced rejection" : US"forced defer";
766 if (ob->forbid_smtp_code &&
767 pcre_exec(regex_smtp_code, NULL, CS addr->message,
768 Ustrlen(addr->message), 0, PCRE_EOPT,
769 ovector, sizeof(ovector)/sizeof(int)) >= 0)
771 DEBUG(D_route) debug_printf("SMTP code at start of error message "
772 "is ignored because forbid_smtp_code is set\n");
773 addr->message += ovector[1];
775 addr->user_message = addr->message;
776 setflag(addr, af_pass_message);
780 /* As in the case of a system filter, a freeze does not happen after a manual
781 thaw. In case deliveries were set up by the filter, we set the child count
782 high so that their completion does not mark the original address done. */
785 if (!deliver_manual_thaw)
787 if ((xrc = sort_errors_and_headers(rblock, addr, verify, &addr_prop))
789 add_generated(rblock, addr_new, addr, generated, &addr_prop, &ugid, pw);
790 if (addr->message == NULL) addr->message = US"frozen by filter";
791 addr->special_action = SPECIAL_FREEZE;
792 addr->child_count = 9999;
795 frc = FF_NOTDELIVERED;
798 /* Handle syntax errors and :include: failures and lookup defers */
803 /* If filtertype is still FILTER_UNSET, it means that the redirection data
804 was never inspected, so the error was an expansion failure or failure to open
805 the file, or whatever. In these cases, the existing error message is probably
808 if (filtertype == FILTER_UNSET) return DEFER;
810 /* If it was a filter and skip_syntax_errors is set, we want to set up
811 the error message so that it can be logged and mailed to somebody. */
813 if (filtertype != FILTER_FORWARD && ob->skip_syntax_errors)
815 eblock = store_get(sizeof(error_block));
817 eblock->text1 = addr->message;
818 eblock->text2 = NULL;
819 addr->message = addr->user_message = NULL;
822 /* Otherwise set up the error for the address and defer. */
826 addr->basic_errno = ERRNO_BADREDIRECT;
827 addr->message = string_sprintf("error in %s %s: %s",
828 (filtertype != FILTER_FORWARD)? "filter" : "redirect",
829 (ob->data == NULL)? "file" : "data",
836 /* Yield is either FF_DELIVERED (significant action) or FF_NOTDELIVERED (no
837 significant action). Before dealing with these, however, we must handle the
838 effect of skip_syntax_errors.
840 If skip_syntax_errors was set and there were syntax errors in an address list,
841 error messages will be present in eblock. Log them and send a message if so
842 configured. We cannot do this earlier, because the error message must not be
843 sent as the local user. If there were no valid addresses, generated will be
844 NULL. In this case, the router declines.
846 For a filter file, the error message has been fudged into an eblock. After
847 dealing with it, the router declines. */
851 if (!moan_skipped_syntax_errors(
852 rblock->name, /* For message content */
854 (verify != v_none || address_test_mode)?
855 NULL : ob->syntax_errors_to, /* Who to mail */
856 generated != NULL, /* True if not all failed */
857 ob->syntax_errors_text)) /* Custom message */
860 if (filtertype != FILTER_FORWARD || generated == NULL)
862 addr->message = US"syntax error in redirection data";
867 /* Sort out the errors address and any header modifications, and handle the
868 generated addresses, if any. If there are no generated addresses, we must avoid
869 calling sort_errors_and_headers() in case this router declines - that function
870 may modify the errors_address field in the current address, and we don't want
871 to do that for a decline. */
873 if (generated != NULL)
875 if ((xrc = sort_errors_and_headers(rblock, addr, verify, &addr_prop)) != OK)
877 add_generated(rblock, addr_new, addr, generated, &addr_prop, &ugid, pw);
880 /* FF_DELIVERED with no generated addresses is what we get when an address list
881 contains :blackhole: or a filter contains "seen finish" without having
882 generated anything. Log what happened to this address, and return DISCARD. */
884 if (frc == FF_DELIVERED)
886 if (generated == NULL && verify == v_none && !address_test_mode)
888 log_write(0, LOG_MAIN, "=> %s <%s> R=%s", discarded, addr->address,
894 /* For an address list, FF_NOTDELIVERED always means that no addresses were
895 generated. For a filter, addresses may or may not have been generated. If none
896 were, it's the same as an empty address list, and the router declines. However,
897 if addresses were generated, we can't just decline because successful delivery
898 of the base address gets it marked "done", so deferred generated addresses
899 never get tried again. We have to generate a new version of the base address,
900 as if there were a "deliver" command in the filter file, with the original
901 address as parent. */
907 if (generated == NULL) return DECLINE;
909 next = deliver_make_addr(addr->address, FALSE);
912 next->next = *addr_new;
915 /* Copy relevant flags (af_propagate is a name for the set), and set the
916 data that propagates. */
918 copyflag(next, addr, af_propagate);
919 next->prop = addr_prop;
921 DEBUG(D_route) debug_printf("%s router autogenerated %s\n%s%s%s",
924 (addr_prop.errors_address != NULL)? " errors to " : "",
925 (addr_prop.errors_address != NULL)? addr_prop.errors_address : US"",
926 (addr_prop.errors_address != NULL)? "\n" : "");
929 /* Control gets here only when the address has been completely handled. Put the
930 original address onto the succeed queue so that any retry items that get
931 attached to it get processed. */
933 addr->next = *addr_succeed;
934 *addr_succeed = addr;
939 #endif /*!MACRO_PREDEF*/
940 /* End of routers/redirect.c */