2 * This module glues libSieve to the Citadel server in order to implement
3 * the Sieve mailbox filtering language (RFC 3028).
5 * Copyright (c) 1987-2018 by the citadel.org team
7 * This program is open source software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 3.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
24 #include <sys/types.h>
26 #if TIME_WITH_SYS_TIME
27 # include <sys/time.h>
31 # include <sys/time.h>
40 #include <libcitadel.h>
43 #include "citserver.h"
48 #include "internet_addressing.h"
49 #include "ctdl_module.h"
50 #include "serv_sieve.h"
52 struct RoomProcList *sieve_list = NULL;
53 char *msiv_extensions = NULL;
57 * Callback function to send libSieve trace messages to Citadel log facility
59 int ctdl_debug(sieve2_context_t *s, void *my)
61 syslog(LOG_DEBUG, "%s", sieve2_getvalue_string(s, "message"));
67 * Callback function to log script parsing errors
69 int ctdl_errparse(sieve2_context_t *s, void *my)
71 syslog(LOG_WARNING, "Error in script, line %d: %s",
72 sieve2_getvalue_int(s, "lineno"),
73 sieve2_getvalue_string(s, "message")
80 * Callback function to log script execution errors
82 int ctdl_errexec(sieve2_context_t *s, void *my)
84 syslog(LOG_WARNING, "Error executing script: %s",
85 sieve2_getvalue_string(s, "message")
92 * Callback function to redirect a message to a different folder
94 int ctdl_redirect(sieve2_context_t *s, void *my)
96 struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
97 struct CtdlMessage *msg = NULL;
98 recptypes *valid = NULL;
101 safestrncpy(recp, sieve2_getvalue_string(s, "address"), sizeof recp);
103 syslog(LOG_DEBUG, "Action is REDIRECT, recipient <%s>", recp);
105 valid = validate_recipients(recp, NULL, 0);
107 syslog(LOG_WARNING, "REDIRECT failed: bad recipient <%s>", recp);
108 return SIEVE2_ERROR_BADARGS;
110 if (valid->num_error > 0) {
111 syslog(LOG_WARNING, "REDIRECT failed: bad recipient <%s>", recp);
112 free_recipients(valid);
113 return SIEVE2_ERROR_BADARGS;
116 msg = CtdlFetchMessage(cs->msgnum, 1, 1);
118 syslog(LOG_WARNING, "REDIRECT failed: unable to fetch msg %ld", cs->msgnum);
119 free_recipients(valid);
120 return SIEVE2_ERROR_BADARGS;
123 CtdlSubmitMsg(msg, valid, NULL, 0);
124 cs->cancel_implicit_keep = 1;
125 free_recipients(valid);
132 * Callback function to indicate that a message *will* be kept in the inbox
134 int ctdl_keep(sieve2_context_t *s, void *my)
136 struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
138 syslog(LOG_DEBUG, "Action is KEEP");
141 cs->cancel_implicit_keep = 1;
147 * Callback function to file a message into a different mailbox
149 int ctdl_fileinto(sieve2_context_t *s, void *my)
151 struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
152 const char *dest_folder = sieve2_getvalue_string(s, "mailbox");
154 char foldername[256];
155 char original_room_name[ROOMNAMELEN];
157 syslog(LOG_DEBUG, "Action is FILEINTO, destination is <%s>", dest_folder);
159 /* FILEINTO 'INBOX' is the same thing as KEEP */
160 if ( (!strcasecmp(dest_folder, "INBOX")) || (!strcasecmp(dest_folder, MAILROOM)) ) {
162 cs->cancel_implicit_keep = 1;
166 /* Remember what room we came from */
167 safestrncpy(original_room_name, CC->room.QRname, sizeof original_room_name);
169 /* First try a mailbox name match (check personal mail folders first) */
170 snprintf(foldername, sizeof foldername, "%010ld.%s", cs->usernum, dest_folder);
171 c = CtdlGetRoom(&CC->room, foldername);
173 /* Then a regular room name match (public and private rooms) */
175 safestrncpy(foldername, dest_folder, sizeof foldername);
176 c = CtdlGetRoom(&CC->room, foldername);
180 syslog(LOG_WARNING, "FILEINTO failed: target <%s> does not exist", dest_folder);
181 return SIEVE2_ERROR_BADARGS;
184 /* Yes, we actually have to go there */
185 CtdlUserGoto(NULL, 0, 0, NULL, NULL, NULL, NULL);
187 c = CtdlSaveMsgPointersInRoom(NULL, &cs->msgnum, 1, 0, NULL, 0);
189 /* Go back to the room we came from */
190 if (strcasecmp(original_room_name, CC->room.QRname)) {
191 CtdlUserGoto(original_room_name, 0, 0, NULL, NULL, NULL, NULL);
195 cs->cancel_implicit_keep = 1;
199 return SIEVE2_ERROR_BADARGS;
205 * Callback function to indicate that a message should be discarded.
207 int ctdl_discard(sieve2_context_t *s, void *my)
209 struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
211 syslog(LOG_DEBUG, "Action is DISCARD");
213 /* Cancel the implicit keep. That's all there is to it. */
214 cs->cancel_implicit_keep = 1;
221 * Callback function to indicate that a message should be rejected
223 int ctdl_reject(sieve2_context_t *s, void *my)
225 struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
226 char *reject_text = NULL;
228 syslog(LOG_DEBUG, "Action is REJECT");
230 /* If we don't know who sent the message, do a DISCARD instead. */
231 if (IsEmptyStr(cs->sender)) {
232 syslog(LOG_INFO, "Unknown sender. Doing DISCARD instead of REJECT.");
233 return ctdl_discard(s, my);
236 /* Assemble the reject message. */
237 reject_text = malloc(strlen(sieve2_getvalue_string(s, "message")) + 1024);
238 if (reject_text == NULL) {
239 return SIEVE2_ERROR_FAIL;
243 "Content-type: text/plain\n"
245 "The message was refused by the recipient's mail filtering program.\n"
246 "The reason given was as follows:\n"
251 sieve2_getvalue_string(s, "message")
254 quickie_message( /* This delivers the message */
261 "Delivery status notification"
265 cs->cancel_implicit_keep = 1;
272 * Callback function to indicate that a vacation message should be generated
274 int ctdl_vacation(sieve2_context_t *s, void *my)
276 struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
277 struct sdm_vacation *vptr;
280 char *vacamsg_text = NULL;
281 char vacamsg_subject[1024];
283 syslog(LOG_DEBUG, "Action is VACATION");
285 message = sieve2_getvalue_string(s, "message");
286 if (message == NULL) return SIEVE2_ERROR_BADARGS;
288 if (sieve2_getvalue_string(s, "subject") != NULL) {
289 safestrncpy(vacamsg_subject, sieve2_getvalue_string(s, "subject"), sizeof vacamsg_subject);
292 snprintf(vacamsg_subject, sizeof vacamsg_subject, "Re: %s", cs->subject);
295 days = sieve2_getvalue_int(s, "days");
296 if (days < 1) days = 1;
297 if (days > MAX_VACATION) days = MAX_VACATION;
299 /* Check to see whether we've already alerted this sender that we're on vacation. */
300 for (vptr = cs->u->first_vacation; vptr != NULL; vptr = vptr->next) {
301 if (!strcasecmp(vptr->fromaddr, cs->sender)) {
302 if ( (time(NULL) - vptr->timestamp) < (days * 86400) ) {
303 syslog(LOG_DEBUG, "Already alerted <%s> recently.", cs->sender);
309 /* Assemble the reject message. */
310 vacamsg_text = malloc(strlen(message) + 1024);
311 if (vacamsg_text == NULL) {
312 return SIEVE2_ERROR_FAIL;
315 sprintf(vacamsg_text,
316 "Content-type: text/plain charset=utf-8\n"
324 quickie_message( /* This delivers the message */
336 /* Now update the list to reflect the fact that we've alerted this sender.
337 * If they're already in the list, just update the timestamp.
339 for (vptr = cs->u->first_vacation; vptr != NULL; vptr = vptr->next) {
340 if (!strcasecmp(vptr->fromaddr, cs->sender)) {
341 vptr->timestamp = time(NULL);
346 /* If we get to this point, create a new record.
348 vptr = malloc(sizeof(struct sdm_vacation));
349 memset(vptr, 0, sizeof(struct sdm_vacation));
350 vptr->timestamp = time(NULL);
351 safestrncpy(vptr->fromaddr, cs->sender, sizeof vptr->fromaddr);
352 vptr->next = cs->u->first_vacation;
353 cs->u->first_vacation = vptr;
360 * Callback function to parse addresses per local system convention
361 * It is disabled because we don't support subaddresses.
364 int ctdl_getsubaddress(sieve2_context_t *s, void *my)
366 struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
368 /* libSieve does not take ownership of the memory used here. But, since we
369 * are just pointing to locations inside a struct which we are going to free
372 sieve2_setvalue_string(s, "user", cs->recp_user);
373 sieve2_setvalue_string(s, "detail", "");
374 sieve2_setvalue_string(s, "localpart", cs->recp_user);
375 sieve2_setvalue_string(s, "domain", cs->recp_node);
382 * Callback function to parse message envelope
384 int ctdl_getenvelope(sieve2_context_t *s, void *my)
386 struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
388 syslog(LOG_DEBUG, "Action is GETENVELOPE");
389 syslog(LOG_DEBUG, "EnvFrom: %s", cs->envelope_from);
390 syslog(LOG_DEBUG, "EnvTo: %s", cs->envelope_to);
392 if (cs->envelope_from != NULL) {
393 if ((cs->envelope_from[0] != '@')&&(cs->envelope_from[strlen(cs->envelope_from)-1] != '@')) {
394 sieve2_setvalue_string(s, "from", cs->envelope_from);
397 sieve2_setvalue_string(s, "from", "invalid_envelope_from@example.org");
401 sieve2_setvalue_string(s, "from", "null_envelope_from@example.org");
405 if (cs->envelope_to != NULL) {
406 if ((cs->envelope_to[0] != '@') && (cs->envelope_to[strlen(cs->envelope_to)-1] != '@')) {
407 sieve2_setvalue_string(s, "to", cs->envelope_to);
410 sieve2_setvalue_string(s, "to", "invalid_envelope_to@example.org");
414 sieve2_setvalue_string(s, "to", "null_envelope_to@example.org");
422 * Callback function to fetch message body
423 * (Uncomment the code if we implement this extension)
425 int ctdl_getbody(sieve2_context_t *s, void *my)
427 return SIEVE2_ERROR_UNSUPPORTED;
434 * Callback function to fetch message size
436 int ctdl_getsize(sieve2_context_t *s, void *my)
438 struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
441 GetMetaData(&smi, cs->msgnum);
443 if (smi.meta_rfc822_length > 0L) {
444 sieve2_setvalue_int(s, "size", (int)smi.meta_rfc822_length);
448 return SIEVE2_ERROR_UNSUPPORTED;
453 * Return a pointer to the active Sieve script.
454 * (Caller does NOT own the memory and should not free the returned pointer.)
456 char *get_active_script(struct sdm_userdata *u) {
457 struct sdm_script *sptr;
459 for (sptr=u->first_script; sptr!=NULL; sptr=sptr->next) {
460 if (sptr->script_active > 0) {
461 syslog(LOG_DEBUG, "get_active_script() is using script '%s'", sptr->script_name);
462 return(sptr->script_content);
466 syslog(LOG_DEBUG, "get_active_script() found no active script");
472 * Callback function to retrieve the sieve script
474 int ctdl_getscript(sieve2_context_t *s, void *my) {
475 struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
477 char *active_script = get_active_script(cs->u);
478 if (active_script != NULL) {
479 sieve2_setvalue_string(s, "script", active_script);
483 return SIEVE2_ERROR_GETSCRIPT;
487 * Callback function to retrieve message headers
489 int ctdl_getheaders(sieve2_context_t *s, void *my) {
491 struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
493 syslog(LOG_DEBUG, "ctdl_getheaders() was called");
494 sieve2_setvalue_string(s, "allheaders", cs->rfc822headers);
501 * Add a room to the list of those rooms which potentially require sieve processing
503 void sieve_queue_room(struct ctdlroom *which_room) {
504 struct RoomProcList *ptr;
506 ptr = (struct RoomProcList *) malloc(sizeof (struct RoomProcList));
507 if (ptr == NULL) return;
509 safestrncpy(ptr->name, which_room->QRname, sizeof ptr->name);
510 begin_critical_section(S_SIEVELIST);
511 ptr->next = sieve_list;
513 end_critical_section(S_SIEVELIST);
514 syslog(LOG_DEBUG, "<%s> queued for Sieve processing", which_room->QRname);
520 * Perform sieve processing for one message (called by sieve_do_room() for each message)
522 void sieve_do_msg(long msgnum, void *userdata) {
523 struct sdm_userdata *u = (struct sdm_userdata *) userdata;
524 sieve2_context_t *sieve2_context;
525 struct ctdl_sieve my;
527 struct CtdlMessage *msg;
529 size_t headers_len = 0;
534 syslog(LOG_EMERG, "Can't process message <%ld> without userdata!", msgnum);
538 sieve2_context = u->sieve2_context;
540 syslog(LOG_DEBUG, "Performing sieve processing on msg <%ld>", msgnum);
543 * Make sure you include message body so you can get those second-level headers ;)
545 msg = CtdlFetchMessage(msgnum, 1, 1);
546 if (msg == NULL) return;
549 * Grab the message headers so we can feed them to libSieve.
550 * Use HEADERS_ONLY rather than HEADERS_FAST in order to include second-level headers.
552 CC->redirect_buffer = NewStrBufPlain(NULL, SIZ);
553 CtdlOutputPreLoadedMsg(msg, MT_RFC822, HEADERS_ONLY, 0, 1, 0);
554 headers_len = StrLength(CC->redirect_buffer);
555 my.rfc822headers = SmashStrBuf(&CC->redirect_buffer);
558 * libSieve clobbers the stack if it encounters badly formed
559 * headers. Sanitize our headers by stripping nonprintable
562 for (i=0; i<headers_len; ++i) {
563 if (!isascii(my.rfc822headers[i])) {
564 my.rfc822headers[i] = '_';
568 my.keep = 0; /* Set to 1 to declare an *explicit* keep */
569 my.cancel_implicit_keep = 0; /* Some actions will cancel the implicit keep */
570 my.usernum = atol(CC->room.QRname); /* Keep track of the owner of the room's namespace */
571 my.msgnum = msgnum; /* Keep track of the message number in our local store */
572 my.u = u; /* Hand off a pointer to the rest of this info */
574 /* Keep track of the recipient so we can do handling based on it later */
575 process_rfc822_addr(msg->cm_fields[eRecipient], my.recp_user, my.recp_node, my.recp_name);
577 /* Keep track of the sender so we can use it for REJECT and VACATION responses */
578 if (!CM_IsEmpty(msg, erFc822Addr)) {
579 safestrncpy(my.sender, msg->cm_fields[erFc822Addr], sizeof my.sender);
581 else if (!CM_IsEmpty(msg, eAuthor)) {
582 safestrncpy(my.sender, msg->cm_fields[eAuthor], sizeof my.sender);
585 strcpy(my.sender, "");
588 /* Keep track of the subject so we can use it for VACATION responses */
589 if (!CM_IsEmpty(msg, eMsgSubject)) {
590 safestrncpy(my.subject, msg->cm_fields[eMsgSubject], sizeof my.subject);
593 strcpy(my.subject, "");
596 /* Keep track of the envelope-from address (use body-from if not found) */
597 if (!CM_IsEmpty(msg, eMessagePath)) {
598 safestrncpy(my.envelope_from, msg->cm_fields[eMessagePath], sizeof my.envelope_from);
599 stripallbut(my.envelope_from, '<', '>');
601 else if (!CM_IsEmpty(msg, erFc822Addr)) {
602 safestrncpy(my.envelope_from, msg->cm_fields[erFc822Addr], sizeof my.envelope_from);
603 stripallbut(my.envelope_from, '<', '>');
606 strcpy(my.envelope_from, "");
609 len = strlen(my.envelope_from);
610 for (i=0; i<len; ++i) {
611 if (isspace(my.envelope_from[i])) my.envelope_from[i] = '_';
613 if (haschar(my.envelope_from, '@') == 0) {
614 strcat(my.envelope_from, "@");
615 strcat(my.envelope_from, CtdlGetConfigStr("c_fqdn"));
618 /* Keep track of the envelope-to address (use body-to if not found) */
619 if (!CM_IsEmpty(msg, eenVelopeTo)) {
620 safestrncpy(my.envelope_to, msg->cm_fields[eenVelopeTo], sizeof my.envelope_to);
621 stripallbut(my.envelope_to, '<', '>');
623 else if (!CM_IsEmpty(msg, eRecipient)) {
624 safestrncpy(my.envelope_to, msg->cm_fields[eRecipient], sizeof my.envelope_to);
625 if (!CM_IsEmpty(msg, eDestination)) {
626 strcat(my.envelope_to, "@");
627 strcat(my.envelope_to, msg->cm_fields[eDestination]);
629 stripallbut(my.envelope_to, '<', '>');
632 strcpy(my.envelope_to, "");
635 len = strlen(my.envelope_to);
636 for (i=0; i<len; ++i) {
637 if (isspace(my.envelope_to[i])) my.envelope_to[i] = '_';
639 if (haschar(my.envelope_to, '@') == 0) {
640 strcat(my.envelope_to, "@");
641 strcat(my.envelope_to, CtdlGetConfigStr("c_fqdn"));
646 syslog(LOG_DEBUG, "Calling sieve2_execute()");
647 res = sieve2_execute(sieve2_context, &my);
648 if (res != SIEVE2_OK) {
649 syslog(LOG_CRIT, "sieve2_execute() returned %d: %s", res, sieve2_errstr(res));
652 free(my.rfc822headers);
653 my.rfc822headers = NULL;
656 * Delete the message from the inbox unless either we were told not to, or
657 * if no other action was successfully taken.
659 if ( (!my.keep) && (my.cancel_implicit_keep) ) {
660 syslog(LOG_DEBUG, "keep is 0 -- deleting message from inbox");
661 CtdlDeleteMessages(CC->room.QRname, &msgnum, 1, "");
664 syslog(LOG_DEBUG, "Completed sieve processing on msg <%ld>", msgnum);
665 u->lastproc = msgnum;
673 * Given the on-disk representation of our Sieve config, load
674 * it into an in-memory data structure.
676 void parse_sieve_config(char *conf, struct sdm_userdata *u) {
680 struct sdm_script *sptr;
681 struct sdm_vacation *vptr;
684 while (c = ptr, ptr = bmstrcasestr(ptr, CTDLSIEVECONFIGSEPARATOR), ptr != NULL) {
686 ptr += strlen(CTDLSIEVECONFIGSEPARATOR);
688 extract_token(keyword, c, 0, '|', sizeof keyword);
690 if (!strcasecmp(keyword, "lastproc")) {
691 u->lastproc = extract_long(c, 1);
694 else if (!strcasecmp(keyword, "script")) {
695 sptr = malloc(sizeof(struct sdm_script));
696 extract_token(sptr->script_name, c, 1, '|', sizeof sptr->script_name);
697 sptr->script_active = extract_int(c, 2);
698 remove_token(c, 0, '|');
699 remove_token(c, 0, '|');
700 remove_token(c, 0, '|');
701 sptr->script_content = strdup(c);
702 sptr->next = u->first_script;
703 u->first_script = sptr;
706 else if (!strcasecmp(keyword, "vacation")) {
708 if (c != NULL) while (vacrec=c, c=strchr(c, '\n'), (c != NULL)) {
713 if (strncasecmp(vacrec, "vacation|", 9)) {
714 vptr = malloc(sizeof(struct sdm_vacation));
715 extract_token(vptr->fromaddr, vacrec, 0, '|', sizeof vptr->fromaddr);
716 vptr->timestamp = extract_long(vacrec, 1);
717 vptr->next = u->first_vacation;
718 u->first_vacation = vptr;
723 /* ignore unknown keywords */
728 * We found the Sieve configuration for this user.
729 * Now do something with it.
731 void get_sieve_config_backend(long msgnum, void *userdata) {
732 struct sdm_userdata *u = (struct sdm_userdata *) userdata;
733 struct CtdlMessage *msg;
737 u->config_msgnum = msgnum;
738 msg = CtdlFetchMessage(msgnum, 1, 1);
740 u->config_msgnum = (-1) ;
744 CM_GetAsField(msg, eMesageText, &conf, &conflen);
749 parse_sieve_config(conf, u);
757 * Write our citadel sieve config back to disk
759 * (Set yes_write_to_disk to nonzero to make it actually write the config;
760 * otherwise it just frees the data structures.)
762 void rewrite_ctdl_sieve_config(struct sdm_userdata *u, int yes_write_to_disk) {
764 struct sdm_script *sptr;
765 struct sdm_vacation *vptr;
767 text = NewStrBufPlain(NULL, SIZ);
769 "Content-type: application/x-citadel-sieve-config\n"
771 CTDLSIEVECONFIGSEPARATOR
773 CTDLSIEVECONFIGSEPARATOR
778 while (u->first_script != NULL) {
779 StrBufAppendPrintf(text,
780 "script|%s|%d|%s" CTDLSIEVECONFIGSEPARATOR,
781 u->first_script->script_name,
782 u->first_script->script_active,
783 u->first_script->script_content
785 sptr = u->first_script;
786 u->first_script = u->first_script->next;
787 free(sptr->script_content);
791 if (u->first_vacation != NULL) {
793 StrBufAppendPrintf(text, "vacation|\n");
794 while (u->first_vacation != NULL) {
795 if ( (time(NULL) - u->first_vacation->timestamp) < (MAX_VACATION * 86400)) {
796 StrBufAppendPrintf(text, "%s|%ld\n",
797 u->first_vacation->fromaddr,
798 u->first_vacation->timestamp
801 vptr = u->first_vacation;
802 u->first_vacation = u->first_vacation->next;
805 StrBufAppendPrintf(text, CTDLSIEVECONFIGSEPARATOR);
808 if (yes_write_to_disk)
810 /* Save the config */
811 quickie_message("Citadel", NULL, NULL, u->config_roomname,
814 "Sieve configuration"
817 /* And delete the old one */
818 if (u->config_msgnum > 0) {
819 CtdlDeleteMessages(u->config_roomname, &u->config_msgnum, 1, "");
829 * This is our callback registration table for libSieve.
831 sieve2_callback_t ctdl_sieve_callbacks[] = {
832 { SIEVE2_ACTION_REJECT, ctdl_reject },
833 { SIEVE2_ACTION_VACATION, ctdl_vacation },
834 { SIEVE2_ERRCALL_PARSE, ctdl_errparse },
835 { SIEVE2_ERRCALL_RUNTIME, ctdl_errexec },
836 { SIEVE2_ACTION_FILEINTO, ctdl_fileinto },
837 { SIEVE2_ACTION_REDIRECT, ctdl_redirect },
838 { SIEVE2_ACTION_DISCARD, ctdl_discard },
839 { SIEVE2_ACTION_KEEP, ctdl_keep },
840 { SIEVE2_SCRIPT_GETSCRIPT, ctdl_getscript },
841 { SIEVE2_DEBUG_TRACE, ctdl_debug },
842 { SIEVE2_MESSAGE_GETALLHEADERS, ctdl_getheaders },
843 { SIEVE2_MESSAGE_GETSIZE, ctdl_getsize },
844 { SIEVE2_MESSAGE_GETENVELOPE, ctdl_getenvelope },
846 * These actions are unsupported by Citadel so we don't declare them.
848 { SIEVE2_ACTION_NOTIFY, ctdl_notify },
849 { SIEVE2_MESSAGE_GETSUBADDRESS, ctdl_getsubaddress },
850 { SIEVE2_MESSAGE_GETBODY, ctdl_getbody },
858 * Perform sieve processing for a single room
860 void sieve_do_room(char *roomname) {
862 struct sdm_userdata u;
863 sieve2_context_t *sieve2_context = NULL; /* Context for sieve parser */
864 int res; /* Return code from libsieve calls */
865 long orig_lastproc = 0;
867 memset(&u, 0, sizeof u);
869 /* See if the user who owns this 'mailbox' has any Sieve scripts that
872 snprintf(u.config_roomname, sizeof u.config_roomname, "%010ld.%s", atol(roomname), USERCONFIGROOM);
873 if (CtdlGetRoom(&CC->room, u.config_roomname) != 0) {
874 syslog(LOG_DEBUG, "<%s> does not exist. No processing is required.", u.config_roomname);
879 * Find the sieve scripts and control record and do something
881 u.config_msgnum = (-1);
882 CtdlForEachMessage(MSGS_LAST, 1, NULL, SIEVECONFIG, NULL,
883 get_sieve_config_backend, (void *)&u );
885 if (u.config_msgnum < 0) {
886 syslog(LOG_DEBUG, "No Sieve rules exist. No processing is required.");
891 * Check to see whether the script is empty and should not be processed.
892 * A script is considered non-empty if it contains at least one semicolon.
895 (get_active_script(&u) == NULL)
896 || (strchr(get_active_script(&u), ';') == NULL)
898 syslog(LOG_DEBUG, "Sieve script is empty. No processing is required.");
902 syslog(LOG_DEBUG, "Rules found. Performing Sieve processing for <%s>", roomname);
904 if (CtdlGetRoom(&CC->room, roomname) != 0) {
905 syslog(LOG_CRIT, "ERROR: cannot load <%s>", roomname);
909 /* Initialize the Sieve parser */
911 res = sieve2_alloc(&sieve2_context);
912 if (res != SIEVE2_OK) {
913 syslog(LOG_CRIT, "sieve2_alloc() returned %d: %s", res, sieve2_errstr(res));
917 res = sieve2_callbacks(sieve2_context, ctdl_sieve_callbacks);
918 if (res != SIEVE2_OK) {
919 syslog(LOG_CRIT, "sieve2_callbacks() returned %d: %s", res, sieve2_errstr(res));
923 /* Validate the script */
925 struct ctdl_sieve my; /* dummy ctdl_sieve struct just to pass "u" slong */
926 memset(&my, 0, sizeof my);
928 res = sieve2_validate(sieve2_context, &my);
929 if (res != SIEVE2_OK) {
930 syslog(LOG_CRIT, "sieve2_validate() returned %d: %s", res, sieve2_errstr(res));
934 /* Do something useful */
935 u.sieve2_context = sieve2_context;
936 orig_lastproc = u.lastproc;
937 CtdlForEachMessage(MSGS_GT, u.lastproc, NULL, NULL, NULL,
943 res = sieve2_free(&sieve2_context);
944 if (res != SIEVE2_OK) {
945 syslog(LOG_CRIT, "sieve2_free() returned %d: %s", res, sieve2_errstr(res));
948 /* Rewrite the config if we have to */
949 rewrite_ctdl_sieve_config(&u, (u.lastproc > orig_lastproc) ) ;
954 * Perform sieve processing for all rooms which require it
956 void perform_sieve_processing(void) {
957 struct RoomProcList *ptr = NULL;
959 if (sieve_list != NULL) {
960 syslog(LOG_DEBUG, "Begin Sieve processing");
961 while (sieve_list != NULL) {
962 char spoolroomname[ROOMNAMELEN];
963 safestrncpy(spoolroomname, sieve_list->name, sizeof spoolroomname);
964 begin_critical_section(S_SIEVELIST);
966 /* pop this record off the list */
968 sieve_list = sieve_list->next;
971 /* invalidate any duplicate entries to prevent double processing */
972 for (ptr=sieve_list; ptr!=NULL; ptr=ptr->next) {
973 if (!strcasecmp(ptr->name, spoolroomname)) {
978 end_critical_section(S_SIEVELIST);
979 if (spoolroomname[0] != 0) {
980 sieve_do_room(spoolroomname);
987 void msiv_load(struct sdm_userdata *u) {
988 char hold_rm[ROOMNAMELEN];
990 strcpy(hold_rm, CC->room.QRname); /* save current room */
992 /* Take a spin through the user's personal address book */
993 if (CtdlGetRoom(&CC->room, USERCONFIGROOM) == 0) {
995 u->config_msgnum = (-1);
996 strcpy(u->config_roomname, CC->room.QRname);
997 CtdlForEachMessage(MSGS_LAST, 1, NULL, SIEVECONFIG, NULL,
998 get_sieve_config_backend, (void *)u );
1002 if (strcmp(CC->room.QRname, hold_rm)) {
1003 CtdlGetRoom(&CC->room, hold_rm); /* return to saved room */
1007 void msiv_store(struct sdm_userdata *u, int yes_write_to_disk) {
1009 * Initialise the sieve configs last processed message number.
1010 * We don't need to get the highest message number for the users inbox since the systems
1011 * highest message number will be higher than that and loer than this scripts message number
1012 * This prevents this new script from processing any old messages in the inbox.
1013 * Most importantly it will prevent vacation messages being sent to lots of old messages
1016 u->lastproc = CtdlGetCurrentMessageNumber();
1017 rewrite_ctdl_sieve_config(u, yes_write_to_disk);
1022 * Select the active script.
1023 * (Set script_name to an empty string to disable all scripts)
1025 * Returns 0 on success or nonzero for error.
1027 int msiv_setactive(struct sdm_userdata *u, char *script_name) {
1029 struct sdm_script *s;
1031 /* First see if the supplied value is ok */
1033 if (IsEmptyStr(script_name)) {
1037 for (s=u->first_script; s!=NULL; s=s->next) {
1038 if (!strcasecmp(s->script_name, script_name)) {
1044 if (!ok) return(-1);
1046 /* Now set the active script */
1047 for (s=u->first_script; s!=NULL; s=s->next) {
1048 if (!strcasecmp(s->script_name, script_name)) {
1049 s->script_active = 1;
1052 s->script_active = 0;
1061 * Fetch a script by name.
1063 * Returns NULL if the named script was not found, or a pointer to the script
1064 * if it was found. NOTE: the caller does *not* own the memory returned by
1065 * this function. Copy it if you need to keep it.
1067 char *msiv_getscript(struct sdm_userdata *u, char *script_name) {
1068 struct sdm_script *s;
1070 for (s=u->first_script; s!=NULL; s=s->next) {
1071 if (!strcasecmp(s->script_name, script_name)) {
1072 if (s->script_content != NULL) {
1073 return (s->script_content);
1083 * Delete a script by name.
1085 * Returns 0 if the script was deleted.
1086 * 1 if the script was not found.
1087 * 2 if the script cannot be deleted because it is active.
1089 int msiv_deletescript(struct sdm_userdata *u, char *script_name) {
1090 struct sdm_script *s = NULL;
1091 struct sdm_script *script_to_delete = NULL;
1093 for (s=u->first_script; s!=NULL; s=s->next) {
1094 if (!strcasecmp(s->script_name, script_name)) {
1095 script_to_delete = s;
1096 if (s->script_active) {
1102 if (script_to_delete == NULL) return(1);
1104 if (u->first_script == script_to_delete) {
1105 u->first_script = u->first_script->next;
1107 else for (s=u->first_script; s!=NULL; s=s->next) {
1108 if (s->next == script_to_delete) {
1109 s->next = s->next->next;
1113 free(script_to_delete->script_content);
1114 free(script_to_delete);
1120 * Add or replace a new script.
1121 * NOTE: after this function returns, "u" owns the memory that "script_content"
1124 void msiv_putscript(struct sdm_userdata *u, char *script_name, char *script_content) {
1126 struct sdm_script *s, *sptr;
1128 for (s=u->first_script; s!=NULL; s=s->next) {
1129 if (!strcasecmp(s->script_name, script_name)) {
1130 if (s->script_content != NULL) {
1131 free(s->script_content);
1133 s->script_content = script_content;
1138 if (replaced == 0) {
1139 sptr = malloc(sizeof(struct sdm_script));
1140 safestrncpy(sptr->script_name, script_name, sizeof sptr->script_name);
1141 sptr->script_content = script_content;
1142 sptr->script_active = 0;
1143 sptr->next = u->first_script;
1144 u->first_script = sptr;
1151 * Citadel protocol to manage sieve scripts.
1152 * This is basically a simplified (read: doesn't resemble IMAP) version
1153 * of the 'managesieve' protocol.
1155 void cmd_msiv(char *argbuf) {
1157 struct sdm_userdata u;
1158 char script_name[256];
1159 char *script_content = NULL;
1160 struct sdm_script *s;
1162 int changes_made = 0;
1164 memset(&u, 0, sizeof(struct sdm_userdata));
1166 if (CtdlAccessCheck(ac_logged_in)) return;
1167 extract_token(subcmd, argbuf, 0, '|', sizeof subcmd);
1170 if (!strcasecmp(subcmd, "putscript")) {
1171 extract_token(script_name, argbuf, 1, '|', sizeof script_name);
1172 if (!IsEmptyStr(script_name)) {
1173 cprintf("%d Transmit script now\n", SEND_LISTING);
1174 script_content = CtdlReadMessageBody(HKEY("000"), CtdlGetConfigLong("c_maxmsglen"), NULL, 0);
1175 msiv_putscript(&u, script_name, script_content);
1179 cprintf("%d Invalid script name.\n", ERROR + ILLEGAL_VALUE);
1183 else if (!strcasecmp(subcmd, "listscripts")) {
1184 cprintf("%d Scripts:\n", LISTING_FOLLOWS);
1185 for (s=u.first_script; s!=NULL; s=s->next) {
1186 if (s->script_content != NULL) {
1187 cprintf("%s|%d|\n", s->script_name, s->script_active);
1193 else if (!strcasecmp(subcmd, "setactive")) {
1194 extract_token(script_name, argbuf, 1, '|', sizeof script_name);
1195 if (msiv_setactive(&u, script_name) == 0) {
1196 cprintf("%d ok\n", CIT_OK);
1200 cprintf("%d Script '%s' does not exist.\n",
1201 ERROR + ILLEGAL_VALUE,
1207 else if (!strcasecmp(subcmd, "getscript")) {
1208 extract_token(script_name, argbuf, 1, '|', sizeof script_name);
1209 script_content = msiv_getscript(&u, script_name);
1210 if (script_content != NULL) {
1213 cprintf("%d Script:\n", LISTING_FOLLOWS);
1214 script_len = strlen(script_content);
1215 client_write(script_content, script_len);
1216 if (script_content[script_len-1] != '\n') {
1222 cprintf("%d Invalid script name.\n", ERROR + ILLEGAL_VALUE);
1226 else if (!strcasecmp(subcmd, "deletescript")) {
1227 extract_token(script_name, argbuf, 1, '|', sizeof script_name);
1228 i = msiv_deletescript(&u, script_name);
1230 cprintf("%d ok\n", CIT_OK);
1234 cprintf("%d Script '%s' does not exist.\n",
1235 ERROR + ILLEGAL_VALUE,
1240 cprintf("%d Script '%s' is active and cannot be deleted.\n",
1241 ERROR + ILLEGAL_VALUE,
1246 cprintf("%d unknown error\n", ERROR);
1251 cprintf("%d Invalid subcommand\n", ERROR + CMD_NOT_SUPPORTED);
1254 msiv_store(&u, changes_made);
1259 void ctdl_sieve_init(void) {
1261 sieve2_context_t *sieve2_context = NULL;
1265 * We don't really care about dumping the entire credits to the log
1266 * every time the server is initialized. The documentation will suffice
1267 * for that purpose. We are making a call to sieve2_credits() in order
1268 * to demonstrate that we have successfully linked in to libsieve.
1270 cred = strdup(sieve2_credits());
1271 if (cred == NULL) return;
1273 if (strlen(cred) > 60) {
1274 strcpy(&cred[55], "...");
1277 syslog(LOG_INFO, "%s",cred);
1280 /* Briefly initialize a Sieve parser instance just so we can list the
1281 * extensions that are available.
1283 res = sieve2_alloc(&sieve2_context);
1284 if (res != SIEVE2_OK) {
1285 syslog(LOG_CRIT, "sieve2_alloc() returned %d: %s", res, sieve2_errstr(res));
1289 res = sieve2_callbacks(sieve2_context, ctdl_sieve_callbacks);
1290 if (res != SIEVE2_OK) {
1291 syslog(LOG_CRIT, "sieve2_callbacks() returned %d: %s", res, sieve2_errstr(res));
1295 msiv_extensions = strdup(sieve2_listextensions(sieve2_context));
1296 syslog(LOG_INFO, "Extensions: %s", msiv_extensions);
1298 BAIL: res = sieve2_free(&sieve2_context);
1299 if (res != SIEVE2_OK) {
1300 syslog(LOG_CRIT, "sieve2_free() returned %d: %s", res, sieve2_errstr(res));
1305 void cleanup_sieve(void)
1307 struct RoomProcList *ptr, *ptr2;
1309 if (msiv_extensions != NULL)
1310 free(msiv_extensions);
1311 msiv_extensions = NULL;
1313 begin_critical_section(S_SIEVELIST);
1315 while (ptr != NULL) {
1321 end_critical_section(S_SIEVELIST);
1324 int serv_sieve_room(struct ctdlroom *room)
1326 if (!strcasecmp(&room->QRname[11], MAILROOM)) {
1327 sieve_queue_room(room);
1332 CTDL_MODULE_INIT(sieve)
1337 CtdlRegisterProtoHook(cmd_msiv, "MSIV", "Manage Sieve scripts");
1338 CtdlRegisterRoomHook(serv_sieve_room);
1339 CtdlRegisterSessionHook(perform_sieve_processing, EVT_HOUSE, PRIO_HOUSE + 10);
1340 CtdlRegisterCleanupHook(cleanup_sieve);
1343 /* return our module name for the log */