2 * IMAP server for the Citadel system
3 * Copyright (C) 2000-2009 by Art Cancro and others.
4 * This code is released under the terms of the GNU General Public License.
6 * WARNING: the IMAP protocol is badly designed. No implementation of it
7 * is perfect. Indeed, with so much gratuitous complexity, *all* IMAP
8 * implementations have bugs.
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 3 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
33 #include <sys/types.h>
35 #if TIME_WITH_SYS_TIME
36 # include <sys/time.h>
40 # include <sys/time.h>
50 #include <libcitadel.h>
53 #include "citserver.h"
59 #include "internet_addressing.h"
60 #include "serv_imap.h"
61 #include "imap_tools.h"
62 #include "imap_list.h"
63 #include "imap_fetch.h"
64 #include "imap_search.h"
65 #include "imap_store.h"
67 #include "imap_metadata.h"
68 #include "imap_misc.h"
70 #include "ctdl_module.h"
72 HashList *ImapCmds = NULL;
73 void registerImapCMD(const char *First, long FLen,
74 const char *Second, long SLen,
80 h = (imap_handler_hook*) malloc(sizeof(imap_handler_hook));
81 memset(h, 0, sizeof(imap_handler_hook));
86 Put(ImapCmds, First, FLen, h, NULL);
90 memcpy(CMD, First, FLen);
91 memcpy(CMD+FLen, Second, SLen);
92 CMD[FLen+SLen] = '\0';
93 Put(ImapCmds, CMD, FLen + SLen, h, NULL);
97 void imap_cleanup(void)
99 DeleteHash(&ImapCmds);
102 const imap_handler_hook *imap_lookup(int num_parms, ConstStr *Params)
105 citimap *Imap = IMAP;
110 /* we abuse the Reply-buffer for uppercasing... */
111 StrBufPlain(Imap->Reply, CKEY(Params[1]));
112 StrBufUpCase(Imap->Reply);
114 syslog(LOG_DEBUG, "---- Looking up [%s] -----",
115 ChrPtr(Imap->Reply));
116 if (GetHash(ImapCmds, SKEY(Imap->Reply), &v))
118 syslog(LOG_DEBUG, "Found. \n");
119 FlushStrBuf(Imap->Reply);
120 return (imap_handler_hook *) v;
125 syslog(LOG_DEBUG, "NOT Found. \n");
126 FlushStrBuf(Imap->Reply);
130 syslog(LOG_DEBUG, "---- Looking up [%s] -----",
131 ChrPtr(Imap->Reply));
132 StrBufAppendBufPlain(Imap->Reply, CKEY(Params[2]), 0);
133 StrBufUpCase(Imap->Reply);
134 if (GetHash(ImapCmds, SKEY(Imap->Reply), &v))
136 syslog(LOG_DEBUG, "Found. \n");
137 FlushStrBuf(Imap->Reply);
138 return (imap_handler_hook *) v;
140 syslog(LOG_DEBUG, "NOT Found. \n");
141 FlushStrBuf(Imap->Reply);
145 /* imap_rename() uses this struct containing list of rooms to rename */
148 char irl_oldroom[ROOMNAMELEN];
149 char irl_newroom[ROOMNAMELEN];
153 /* Data which is passed between imap_rename() and imap_rename_backend() */
162 * If there is a message ID map in memory, free it
164 void imap_free_msgids(void)
166 citimap *Imap = IMAP;
167 if (Imap->msgids != NULL) {
173 if (Imap->flags != NULL) {
177 Imap->last_mtime = (-1);
182 * If there is a transmitted message in memory, free it
184 void imap_free_transmitted_message(void)
186 FreeStrBuf(&IMAP->TransmittedMessage);
191 * Set the \Seen, \Recent. and \Answered flags, based on the sequence
192 * sets stored in the visit record for this user/room. Note that we have
193 * to parse each sequence set manually here, because calling the utility
194 * function is_msg_in_sequence_set() over and over again is too expensive.
196 * first_msg should be set to 0 to rescan the flags for every message in the
197 * room, or some other value if we're only interested in an incremental
200 void imap_set_seen_flags(int first_msg)
202 citimap *Imap = IMAP;
207 char setstr[64], lostr[64], histr[64];
210 if (Imap->num_msgs < 1) return;
211 CtdlGetRelationship(&vbuf, &CC->user, &CC->room);
213 for (i = first_msg; i < Imap->num_msgs; ++i) {
214 Imap->flags[i] = Imap->flags[i] & ~IMAP_SEEN;
215 Imap->flags[i] |= IMAP_RECENT;
216 Imap->flags[i] = Imap->flags[i] & ~IMAP_ANSWERED;
220 * Do the "\Seen" flag.
221 * (Any message not "\Seen" is considered "\Recent".)
223 num_sets = num_tokens(vbuf.v_seen, ',');
224 for (s=0; s<num_sets; ++s) {
225 extract_token(setstr, vbuf.v_seen, s, ',', sizeof setstr);
227 extract_token(lostr, setstr, 0, ':', sizeof lostr);
228 if (num_tokens(setstr, ':') >= 2) {
229 extract_token(histr, setstr, 1, ':', sizeof histr);
230 if (!strcmp(histr, "*")) {
231 snprintf(histr, sizeof histr, "%ld", LONG_MAX);
235 strcpy(histr, lostr);
240 for (i = first_msg; i < Imap->num_msgs; ++i) {
241 if ((Imap->msgids[i] >= lo) && (Imap->msgids[i] <= hi)){
242 Imap->flags[i] |= IMAP_SEEN;
243 Imap->flags[i] = Imap->flags[i] & ~IMAP_RECENT;
248 /* Do the ANSWERED flag */
249 num_sets = num_tokens(vbuf.v_answered, ',');
250 for (s=0; s<num_sets; ++s) {
251 extract_token(setstr, vbuf.v_answered, s, ',', sizeof setstr);
253 extract_token(lostr, setstr, 0, ':', sizeof lostr);
254 if (num_tokens(setstr, ':') >= 2) {
255 extract_token(histr, setstr, 1, ':', sizeof histr);
256 if (!strcmp(histr, "*")) {
257 snprintf(histr, sizeof histr, "%ld", LONG_MAX);
261 strcpy(histr, lostr);
266 for (i = first_msg; i < Imap->num_msgs; ++i) {
267 if ((Imap->msgids[i] >= lo) && (Imap->msgids[i] <= hi)){
268 Imap->flags[i] |= IMAP_ANSWERED;
278 * Back end for imap_load_msgids()
280 * Optimization: instead of calling realloc() to add each message, we
281 * allocate space in the list for REALLOC_INCREMENT messages at a time. This
282 * allows the mapping to proceed much faster.
284 void imap_add_single_msgid(long msgnum, void *userdata)
286 citimap *Imap = IMAP;
289 if (Imap->num_msgs > Imap->num_alloc) {
290 Imap->num_alloc += REALLOC_INCREMENT;
291 Imap->msgids = realloc(Imap->msgids, (Imap->num_alloc * sizeof(long)) );
292 Imap->flags = realloc(Imap->flags, (Imap->num_alloc * sizeof(long)) );
294 Imap->msgids[Imap->num_msgs - 1] = msgnum;
295 Imap->flags[Imap->num_msgs - 1] = 0;
301 * Set up a message ID map for the current room (folder)
303 void imap_load_msgids(void)
305 struct cdbdata *cdbfr;
306 citimap *Imap = IMAP;
308 if (Imap->selected == 0) {
310 "imap_load_msgids() can't run; no room selected\n");
314 imap_free_msgids(); /* If there was already a map, free it */
316 /* Load the message list */
317 cdbfr = cdb_fetch(CDB_MSGLISTS, &CC->room.QRnumber, sizeof(long));
319 Imap->msgids = malloc(cdbfr->len);
320 memcpy(Imap->msgids, cdbfr->ptr, cdbfr->len);
321 Imap->num_msgs = cdbfr->len / sizeof(long);
322 Imap->num_alloc = cdbfr->len / sizeof(long);
326 if (Imap->num_msgs) {
327 Imap->flags = malloc(Imap->num_alloc * sizeof(long));
328 memset(Imap->flags, 0, (Imap->num_alloc * sizeof(long)) );
331 imap_set_seen_flags(0);
336 * Re-scan the selected room (folder) and see if it's been changed at all
338 void imap_rescan_msgids(void)
340 citimap *Imap = IMAP;
341 int original_num_msgs = 0;
342 long original_highest = 0L;
344 int message_still_exists;
345 struct cdbdata *cdbfr;
346 long *msglist = NULL;
350 if (Imap->selected == 0) {
351 syslog(LOG_ERR, "imap_load_msgids() can't run; no room selected\n");
356 * Check to see if the room's contents have changed.
357 * If not, we can avoid this rescan.
359 CtdlGetRoom(&CC->room, CC->room.QRname);
360 if (Imap->last_mtime == CC->room.QRmtime) { /* No changes! */
364 /* Load the *current* message list from disk, so we can compare it
365 * to what we have in memory.
367 cdbfr = cdb_fetch(CDB_MSGLISTS, &CC->room.QRnumber, sizeof(long));
369 msglist = malloc(cdbfr->len);
370 if (msglist == NULL) {
371 syslog(LOG_CRIT, "malloc() failed\n");
374 memcpy(msglist, cdbfr->ptr, (size_t)cdbfr->len);
375 num_msgs = cdbfr->len / sizeof(long);
382 * Check to see if any of the messages we know about have been expunged
384 if (Imap->num_msgs > 0) {
386 for (i = 0; i < Imap->num_msgs; ++i) {
388 message_still_exists = 0;
390 for (j = jstart; j < num_msgs; ++j) {
391 if (msglist[j] == Imap->msgids[i]) {
392 message_still_exists = 1;
399 if (message_still_exists == 0) {
400 IAPrintf("* %d EXPUNGE\r\n", i + 1);
402 /* Here's some nice stupid nonsense. When a
403 * message is expunged, we have to slide all
404 * the existing messages up in the message
408 memcpy(&Imap->msgids[i],
409 &Imap->msgids[i + 1],
411 (Imap->num_msgs - i)));
412 memcpy(&Imap->flags[i],
415 (Imap->num_msgs - i)));
424 * Remember how many messages were here before we re-scanned.
426 original_num_msgs = Imap->num_msgs;
427 if (Imap->num_msgs > 0) {
428 original_highest = Imap->msgids[Imap->num_msgs - 1];
430 original_highest = 0L;
434 * Now peruse the room for *new* messages only.
435 * This logic is probably the cause of Bug # 368
436 * [ http://bugzilla.citadel.org/show_bug.cgi?id=368 ]
439 for (j = 0; j < num_msgs; ++j) {
440 if (msglist[j] > original_highest) {
441 imap_add_single_msgid(msglist[j], NULL);
445 imap_set_seen_flags(original_num_msgs);
448 * If new messages have arrived, tell the client about them.
450 if (Imap->num_msgs > original_num_msgs) {
452 for (j = 0; j < num_msgs; ++j) {
453 if (Imap->flags[j] & IMAP_RECENT) {
458 IAPrintf("* %d EXISTS\r\n", Imap->num_msgs);
459 IAPrintf("* %d RECENT\r\n", num_recent);
465 Imap->last_mtime = CC->room.QRmtime;
470 * This cleanup function blows away the temporary memory and files used by
473 void imap_cleanup_function(void)
475 citimap *Imap = IMAP;
477 /* Don't do this stuff if this is not a Imap session! */
478 if (CC->h_command_function != imap_command_loop)
481 /* If there is a mailbox selected, auto-expunge it. */
482 if (Imap->selected) {
486 syslog(LOG_DEBUG, "Performing IMAP cleanup hook\n");
488 imap_free_transmitted_message();
490 if (Imap->cached_rfc822 != NULL) {
491 FreeStrBuf(&Imap->cached_rfc822);
492 Imap->cached_rfc822_msgnum = (-1);
493 Imap->cached_rfc822_withbody = 0;
496 if (Imap->cached_body != NULL) {
497 free(Imap->cached_body);
498 Imap->cached_body = NULL;
499 Imap->cached_body_len = 0;
500 Imap->cached_bodymsgnum = (-1);
502 FreeStrBuf(&Imap->Cmd.CmdBuf);
503 FreeStrBuf(&Imap->Reply);
504 if (Imap->Cmd.Params != NULL) free(Imap->Cmd.Params);
506 syslog(LOG_DEBUG, "Finished IMAP cleanup hook\n");
511 * Does the actual work of the CAPABILITY command (because we need to
512 * output this stuff in other places as well)
514 void imap_output_capability_string(void) {
515 IAPuts("CAPABILITY IMAP4REV1 NAMESPACE ID AUTH=PLAIN AUTH=LOGIN UIDPLUS");
518 if (!CC->redirect_ssl) IAPuts(" STARTTLS");
521 #ifndef DISABLE_IMAP_ACL
525 /* We are building a partial implementation of METADATA for the sole purpose
526 * of interoperating with the ical/vcard version of the Bynari Insight Connector.
527 * It is not a full RFC5464 implementation, but it should refuse non-Bynari
528 * metadata in a compatible and graceful way.
533 * LIST-EXTENDED was originally going to be required by the METADATA extension.
534 * It was mercifully removed prior to the finalization of RFC5464. We started
535 * implementing this but stopped when we learned that it would not be needed.
536 * If you uncomment this declaration you are responsible for writing a lot of new
539 * IAPuts(" LIST-EXTENDED")
545 * implements the CAPABILITY command
547 void imap_capability(int num_parms, ConstStr *Params)
550 imap_output_capability_string();
552 IReply("OK CAPABILITY completed");
557 * Implements the ID command (specified by RFC2971)
559 * We ignore the client-supplied information, and output a NIL response.
560 * Although this is technically a valid implementation of the extension, it
561 * is quite useless. It exists only so that we may see which clients are
562 * making use of this extension.
565 void imap_id(int num_parms, ConstStr *Params)
567 IAPuts("* ID NIL\r\n");
568 IReply("OK ID completed");
573 * Here's where our IMAP session begins its happy day.
575 void imap_greeting(void)
578 CitContext *CCC = CC;
580 strcpy(CCC->cs_clientname, "IMAP session");
581 CCC->session_specific_data = malloc(sizeof(citimap));
582 Imap = (citimap *)CCC->session_specific_data;
583 memset(Imap, 0, sizeof(citimap));
584 Imap->authstate = imap_as_normal;
585 Imap->cached_rfc822_msgnum = (-1);
586 Imap->cached_rfc822_withbody = 0;
587 Imap->Reply = NewStrBufPlain(NULL, SIZ * 10); /* 40k */
591 IAPuts("* BYE; Server busy, try later\r\n");
592 CCC->kill_me = KILLME_NOLOGIN;
598 imap_output_capability_string();
599 IAPrintf("] %s IMAP4rev1 %s ready\r\n", config.c_fqdn, CITADEL);
605 * IMAPS is just like IMAP, except it goes crypto right away.
607 void imaps_greeting(void) {
608 CtdlModuleStartCryptoMsgs(NULL, NULL, NULL);
610 if (!CC->redirect_ssl) CC->kill_me = KILLME_NO_CRYPTO; /* kill session if no crypto */
617 * implements the LOGIN command (ordinary username/password login)
619 void imap_login(int num_parms, ConstStr *Params)
624 if (Params[2].Key[0] == '{') {
625 IAPuts("+ go ahead\r\n");
626 IMAP->authstate = imap_as_expecting_multilineusername;
627 strcpy(IMAP->authseq, Params[0].Key);
631 IReply("BAD incorrect number of parameters");
635 if (CtdlLoginExistingUser(NULL, Params[2].Key) == login_ok) {
636 if (CtdlTryPassword(Params[3].Key, Params[3].len) == pass_ok) {
637 /* hm, thats not doable by IReply :-( */
638 IAPrintf("%s OK [", Params[0].Key);
639 imap_output_capability_string();
640 IAPrintf("] Hello, %s\r\n", CC->user.fullname);
645 IReplyPrintf("NO AUTHENTICATE %s failed",
650 IReply("BAD Login incorrect");
652 IReply("BAD incorrect number of parameters");
660 * Implements the AUTHENTICATE command
662 void imap_authenticate(int num_parms, ConstStr *Params)
666 if (num_parms != 3) {
667 IReply("BAD incorrect number of parameters");
672 IReply("BAD Already logged in.");
676 if (!strcasecmp(Params[2].Key, "LOGIN")) {
677 CtdlEncodeBase64(UsrBuf, "Username:", 9, 0);
678 IAPrintf("+ %s\r\n", UsrBuf);
679 IMAP->authstate = imap_as_expecting_username;
680 strcpy(IMAP->authseq, Params[0].Key);
684 if (!strcasecmp(Params[2].Key, "PLAIN")) {
685 // CtdlEncodeBase64(UsrBuf, "Username:", 9, 0);
686 // IAPuts("+ %s\r\n", UsrBuf);
688 IMAP->authstate = imap_as_expecting_plainauth;
689 strcpy(IMAP->authseq, Params[0].Key);
694 IReplyPrintf("NO AUTHENTICATE %s failed",
700 void imap_auth_plain(void)
702 citimap *Imap = IMAP;
703 const char *decoded_authstring;
710 memset(pass, 0, sizeof(pass));
711 StrBufDecodeBase64(Imap->Cmd.CmdBuf);
713 decoded_authstring = ChrPtr(Imap->Cmd.CmdBuf);
714 safestrncpy(ident, decoded_authstring, sizeof ident);
715 safestrncpy(user, &decoded_authstring[strlen(ident) + 1], sizeof user);
716 len = safestrncpy(pass, &decoded_authstring[strlen(ident) + strlen(user) + 2], sizeof pass);
718 len = sizeof(pass) - 1;
720 Imap->authstate = imap_as_normal;
722 if (!IsEmptyStr(ident)) {
723 result = CtdlLoginExistingUser(user, ident);
726 result = CtdlLoginExistingUser(NULL, user);
729 if (result == login_ok) {
730 if (CtdlTryPassword(pass, len) == pass_ok) {
731 IAPrintf("%s OK authentication succeeded\r\n", Imap->authseq);
735 IAPrintf("%s NO authentication failed\r\n", Imap->authseq);
739 void imap_auth_login_user(long state)
742 citimap *Imap = IMAP;
745 case imap_as_expecting_username:
746 StrBufDecodeBase64(Imap->Cmd.CmdBuf);
747 CtdlLoginExistingUser(NULL, ChrPtr(Imap->Cmd.CmdBuf));
748 CtdlEncodeBase64(PWBuf, "Password:", 9, 0);
749 IAPrintf("+ %s\r\n", PWBuf);
751 Imap->authstate = imap_as_expecting_password;
753 case imap_as_expecting_multilineusername:
754 extract_token(PWBuf, ChrPtr(Imap->Cmd.CmdBuf), 1, ' ', sizeof(PWBuf));
755 CtdlLoginExistingUser(NULL, ChrPtr(Imap->Cmd.CmdBuf));
756 IAPuts("+ go ahead\r\n");
757 Imap->authstate = imap_as_expecting_multilinepassword;
763 void imap_auth_login_pass(long state)
765 citimap *Imap = IMAP;
766 const char *pass = NULL;
771 case imap_as_expecting_password:
772 StrBufDecodeBase64(Imap->Cmd.CmdBuf);
773 pass = ChrPtr(Imap->Cmd.CmdBuf);
774 len = StrLength(Imap->Cmd.CmdBuf);
776 case imap_as_expecting_multilinepassword:
777 pass = ChrPtr(Imap->Cmd.CmdBuf);
778 len = StrLength(Imap->Cmd.CmdBuf);
781 if (len > USERNAME_SIZE)
782 StrBufCutAt(Imap->Cmd.CmdBuf, USERNAME_SIZE, NULL);
784 if (CtdlTryPassword(pass, len) == pass_ok) {
785 IAPrintf("%s OK authentication succeeded\r\n", Imap->authseq);
787 IAPrintf("%s NO authentication failed\r\n", Imap->authseq);
789 Imap->authstate = imap_as_normal;
795 * implements the STARTTLS command (Citadel API version)
797 void imap_starttls(int num_parms, ConstStr *Params)
799 char ok_response[SIZ];
800 char nosup_response[SIZ];
801 char error_response[SIZ];
803 snprintf(ok_response, SIZ, "%s OK begin TLS negotiation now\r\n", Params[0].Key);
804 snprintf(nosup_response, SIZ, "%s NO TLS not supported here\r\n", Params[0].Key);
805 snprintf(error_response, SIZ, "%s BAD Internal error\r\n", Params[0].Key);
806 CtdlModuleStartCryptoMsgs(ok_response, nosup_response, error_response);
811 * implements the SELECT command
813 void imap_select(int num_parms, ConstStr *Params)
815 citimap *Imap = IMAP;
816 char towhere[ROOMNAMELEN];
817 char augmented_roomname[ROOMNAMELEN];
821 struct ctdlroom QRscratch;
827 /* Convert the supplied folder name to a roomname */
828 i = imap_roomname(towhere, sizeof towhere, Params[2].Key);
830 IReply("NO Invalid mailbox name.");
834 floornum = (i & 0x00ff);
835 roomflags = (i & 0xff00);
837 /* First try a regular match */
838 c = CtdlGetRoom(&QRscratch, towhere);
840 /* Then try a mailbox name match */
842 CtdlMailboxName(augmented_roomname, sizeof augmented_roomname, &CC->user, towhere);
843 c = CtdlGetRoom(&QRscratch, augmented_roomname);
845 safestrncpy(towhere, augmented_roomname, sizeof(towhere));
849 /* If the room exists, check security/access */
851 /* See if there is an existing user/room relationship */
852 CtdlRoomAccess(&QRscratch, &CC->user, &ra, NULL);
854 /* normal clients have to pass through security */
860 /* Fail here if no such room */
862 IReply("NO ... no such room, or access denied");
866 /* If we already had some other folder selected, auto-expunge it */
870 * CtdlUserGoto() formally takes us to the desired room, happily returning
871 * the number of messages and number of new messages.
873 memcpy(&CC->room, &QRscratch, sizeof(struct ctdlroom));
874 CtdlUserGoto(NULL, 0, 0, &msgs, &new);
877 if (!strcasecmp(Params[1].Key, "EXAMINE")) {
884 Imap->last_mtime = CC->room.QRmtime;
886 IAPrintf("* %d EXISTS\r\n", msgs);
887 IAPrintf("* %d RECENT\r\n", new);
889 IAPrintf("* OK [UIDVALIDITY %ld] UID validity status\r\n", GLOBAL_UIDVALIDITY_VALUE);
890 IAPrintf("* OK [UIDNEXT %ld] Predicted next UID\r\n", CitControl.MMhighest + 1);
892 /* Technically, \Deleted is a valid flag, but not a permanent flag,
893 * because we don't maintain its state across sessions. Citadel
894 * automatically expunges mailboxes when they are de-selected.
896 * Unfortunately, omitting \Deleted as a PERMANENTFLAGS flag causes
897 * some clients (particularly Thunderbird) to misbehave -- they simply
898 * elect not to transmit the flag at all. So we have to advertise
899 * \Deleted as a PERMANENTFLAGS flag, even though it technically isn't.
901 IAPuts("* FLAGS (\\Deleted \\Seen \\Answered)\r\n");
902 IAPuts("* OK [PERMANENTFLAGS (\\Deleted \\Seen \\Answered)] permanent flags\r\n");
904 IReplyPrintf("OK [%s] %s completed",
905 (Imap->readonly ? "READ-ONLY" : "READ-WRITE"), Params[1].Key
911 * Does the real work for expunge.
913 int imap_do_expunge(void)
915 citimap *Imap = IMAP;
917 int num_expunged = 0;
918 long *delmsgs = NULL;
921 syslog(LOG_DEBUG, "imap_do_expunge() called\n");
922 if (Imap->selected == 0) {
926 if (Imap->num_msgs > 0) {
927 delmsgs = malloc(Imap->num_msgs * sizeof(long));
928 for (i = 0; i < Imap->num_msgs; ++i) {
929 if (Imap->flags[i] & IMAP_DELETED) {
930 delmsgs[num_delmsgs++] = Imap->msgids[i];
933 if (num_delmsgs > 0) {
934 CtdlDeleteMessages(CC->room.QRname, delmsgs, num_delmsgs, "");
936 num_expunged += num_delmsgs;
940 if (num_expunged > 0) {
941 imap_rescan_msgids();
944 syslog(LOG_DEBUG, "Expunged %d messages from <%s>\n", num_expunged, CC->room.QRname);
945 return (num_expunged);
950 * implements the EXPUNGE command syntax
952 void imap_expunge(int num_parms, ConstStr *Params)
954 int num_expunged = 0;
956 num_expunged = imap_do_expunge();
957 IReplyPrintf("OK expunged %d messages.", num_expunged);
962 * implements the CLOSE command
964 void imap_close(int num_parms, ConstStr *Params)
967 /* Yes, we always expunge on close. */
968 if (IMAP->selected) {
975 IReply("OK CLOSE completed");
980 * Implements the NAMESPACE command.
982 void imap_namespace(int num_parms, ConstStr *Params)
989 IAPuts("* NAMESPACE ");
991 /* All personal folders are subordinate to INBOX. */
992 IAPuts("((\"INBOX/\" \"/\")) ");
994 /* Other users' folders ... coming soon! FIXME */
997 /* Show all floors as shared namespaces. Neato! */
999 for (i = 0; i < MAXFLOORS; ++i) {
1000 fl = CtdlGetCachedFloor(i);
1001 if (fl->f_flags & F_INUSE) {
1002 /* if (floors > 0) IAPuts(" "); samjam says this confuses javamail */
1004 snprintf(Namespace, sizeof(Namespace), "%s/", fl->f_name);
1005 plain_imap_strout(Namespace);
1012 /* Wind it up with a newline and a completion message. */
1014 IReply("OK NAMESPACE completed");
1019 * Implements the CREATE command
1022 void imap_create(int num_parms, ConstStr *Params)
1025 char roomname[ROOMNAMELEN];
1028 int newroomtype = 0;
1029 int newroomview = 0;
1030 char *notification_message = NULL;
1032 if (num_parms < 3) {
1033 IReply("NO A foder name must be specified");
1037 if (strchr(Params[2].Key, '\\') != NULL) {
1038 IReply("NO Invalid character in folder name");
1039 syslog(LOG_DEBUG, "invalid character in folder name\n");
1043 ret = imap_roomname(roomname, sizeof roomname, Params[2].Key);
1045 IReply("NO Invalid mailbox name or location");
1046 syslog(LOG_DEBUG, "invalid mailbox name or location\n");
1049 floornum = (ret & 0x00ff); /* lower 8 bits = floor number */
1050 flags = (ret & 0xff00); /* upper 8 bits = flags */
1052 if (flags & IR_MAILBOX) {
1053 if (strncasecmp(Params[2].Key, "INBOX/", 6)) {
1054 IReply("NO Personal folders must be created under INBOX");
1055 syslog(LOG_DEBUG, "not subordinate to inbox\n");
1060 if (flags & IR_MAILBOX) {
1061 newroomtype = 4; /* private mailbox */
1062 newroomview = VIEW_MAILBOX;
1064 newroomtype = 0; /* public folder */
1065 newroomview = VIEW_BBS;
1068 syslog(LOG_INFO, "Create new room <%s> on floor <%d> with type <%d>\n",
1069 roomname, floornum, newroomtype);
1071 ret = CtdlCreateRoom(roomname, newroomtype, "", floornum, 1, 0, newroomview);
1073 /*** DO NOT CHANGE THIS ERROR MESSAGE IN ANY WAY! BYNARI CONNECTOR DEPENDS ON IT! ***/
1074 IReply("NO Mailbox already exists, or create failed");
1076 IReply("OK CREATE completed");
1077 /* post a message in Aide> describing the new room */
1078 notification_message = malloc(1024);
1079 snprintf(notification_message, 1024,
1080 "A new room called \"%s\" has been created by %s%s%s%s\n",
1083 ((ret & QR_MAILBOX) ? " [personal]" : ""),
1084 ((ret & QR_PRIVATE) ? " [private]" : ""),
1085 ((ret & QR_GUESSNAME) ? " [hidden]" : "")
1087 CtdlAideMessage(notification_message, "Room Creation Message");
1088 free(notification_message);
1090 syslog(LOG_DEBUG, "imap_create() completed\n");
1095 * Locate a room by its IMAP folder name, and check access to it.
1096 * If zapped_ok is nonzero, we can also look for the room in the zapped list.
1098 int imap_grabroom(char *returned_roomname, const char *foldername, int zapped_ok)
1101 char augmented_roomname[ROOMNAMELEN];
1102 char roomname[ROOMNAMELEN];
1104 struct ctdlroom QRscratch;
1108 ret = imap_roomname(roomname, sizeof roomname, foldername);
1113 /* First try a regular match */
1114 c = CtdlGetRoom(&QRscratch, roomname);
1116 /* Then try a mailbox name match */
1118 CtdlMailboxName(augmented_roomname, sizeof augmented_roomname,
1119 &CC->user, roomname);
1120 c = CtdlGetRoom(&QRscratch, augmented_roomname);
1122 safestrncpy(roomname, augmented_roomname, sizeof(roomname));
1125 /* If the room exists, check security/access */
1127 /* See if there is an existing user/room relationship */
1128 CtdlRoomAccess(&QRscratch, &CC->user, &ra, NULL);
1130 /* normal clients have to pass through security */
1131 if (ra & UA_KNOWN) {
1134 if ((zapped_ok) && (ra & UA_ZAPPED)) {
1139 /* Fail here if no such room */
1141 strcpy(returned_roomname, "");
1144 safestrncpy(returned_roomname, QRscratch.QRname, ROOMNAMELEN);
1151 * Implements the STATUS command (sort of)
1154 void imap_status(int num_parms, ConstStr *Params)
1157 char roomname[ROOMNAMELEN];
1158 char imaproomname[SIZ];
1159 char savedroom[ROOMNAMELEN];
1162 ret = imap_grabroom(roomname, Params[2].Key, 1);
1164 IReply("NO Invalid mailbox name or location, or access denied");
1169 * CtdlUserGoto() formally takes us to the desired room, happily returning
1170 * the number of messages and number of new messages. (If another
1171 * folder is selected, save its name so we can return there!!!!!)
1173 if (IMAP->selected) {
1174 strcpy(savedroom, CC->room.QRname);
1176 CtdlUserGoto(roomname, 0, 0, &msgs, &new);
1179 * Tell the client what it wants to know. In fact, tell it *more* than
1180 * it wants to know. We happily IGnore the supplied status data item
1181 * names and simply spew all possible data items. It's far easier to
1182 * code and probably saves us some processing time too.
1184 imap_mailboxname(imaproomname, sizeof imaproomname, &CC->room);
1185 IAPuts("* STATUS ");
1186 plain_imap_strout(imaproomname);
1187 IAPrintf(" (MESSAGES %d ", msgs);
1188 IAPrintf("RECENT %d ", new); /* Initially, new==recent */
1189 IAPrintf("UIDNEXT %ld ", CitControl.MMhighest + 1);
1190 IAPrintf("UNSEEN %d)\r\n", new);
1193 * If another folder is selected, go back to that room so we can resume
1194 * our happy day without violent explosions.
1196 if (IMAP->selected) {
1197 CtdlUserGoto(savedroom, 0, 0, &msgs, &new);
1201 * Oooh, look, we're done!
1203 IReply("OK STATUS completed");
1208 * Implements the SUBSCRIBE command
1211 void imap_subscribe(int num_parms, ConstStr *Params)
1214 char roomname[ROOMNAMELEN];
1215 char savedroom[ROOMNAMELEN];
1218 ret = imap_grabroom(roomname, Params[2].Key, 1);
1221 "NO Error %d: invalid mailbox name or location, or access denied",
1228 * CtdlUserGoto() formally takes us to the desired room, which has the side
1229 * effect of marking the room as not-zapped ... exactly the effect
1230 * we're looking for.
1232 if (IMAP->selected) {
1233 strcpy(savedroom, CC->room.QRname);
1235 CtdlUserGoto(roomname, 0, 0, &msgs, &new);
1238 * If another folder is selected, go back to that room so we can resume
1239 * our happy day without violent explosions.
1241 if (IMAP->selected) {
1242 CtdlUserGoto(savedroom, 0, 0, &msgs, &new);
1245 IReply("OK SUBSCRIBE completed");
1250 * Implements the UNSUBSCRIBE command
1253 void imap_unsubscribe(int num_parms, ConstStr *Params)
1256 char roomname[ROOMNAMELEN];
1257 char savedroom[ROOMNAMELEN];
1260 ret = imap_grabroom(roomname, Params[2].Key, 1);
1262 IReply("NO Invalid mailbox name or location, or access denied");
1267 * CtdlUserGoto() formally takes us to the desired room.
1269 if (IMAP->selected) {
1270 strcpy(savedroom, CC->room.QRname);
1272 CtdlUserGoto(roomname, 0, 0, &msgs, &new);
1275 * Now make the API call to zap the room
1277 if (CtdlForgetThisRoom() == 0) {
1278 IReply("OK UNSUBSCRIBE completed");
1280 IReply("NO You may not unsubscribe from this folder.");
1284 * If another folder is selected, go back to that room so we can resume
1285 * our happy day without violent explosions.
1287 if (IMAP->selected) {
1288 CtdlUserGoto(savedroom, 0, 0, &msgs, &new);
1294 * Implements the DELETE command
1297 void imap_delete(int num_parms, ConstStr *Params)
1300 char roomname[ROOMNAMELEN];
1301 char savedroom[ROOMNAMELEN];
1304 ret = imap_grabroom(roomname, Params[2].Key, 1);
1306 IReply("NO Invalid mailbox name, or access denied");
1311 * CtdlUserGoto() formally takes us to the desired room, happily returning
1312 * the number of messages and number of new messages. (If another
1313 * folder is selected, save its name so we can return there!!!!!)
1315 if (IMAP->selected) {
1316 strcpy(savedroom, CC->room.QRname);
1318 CtdlUserGoto(roomname, 0, 0, &msgs, &new);
1321 * Now delete the room.
1323 if (CtdlDoIHavePermissionToDeleteThisRoom(&CC->room)) {
1324 CtdlScheduleRoomForDeletion(&CC->room);
1325 IReply("OK DELETE completed");
1327 IReply("NO Can't delete this folder.");
1331 * If another folder is selected, go back to that room so we can resume
1332 * our happy day without violent explosions.
1334 if (IMAP->selected) {
1335 CtdlUserGoto(savedroom, 0, 0, &msgs, &new);
1341 * Back end function for imap_rename()
1343 void imap_rename_backend(struct ctdlroom *qrbuf, void *data)
1345 char foldername[SIZ];
1346 char newfoldername[SIZ];
1347 char newroomname[ROOMNAMELEN];
1349 struct irl *irlp = NULL; /* scratch pointer */
1350 struct irlparms *irlparms;
1352 irlparms = (struct irlparms *) data;
1353 imap_mailboxname(foldername, sizeof foldername, qrbuf);
1355 /* Rename subfolders */
1356 if ((!strncasecmp(foldername, irlparms->oldname,
1357 strlen(irlparms->oldname))
1358 && (foldername[strlen(irlparms->oldname)] == '/'))) {
1360 sprintf(newfoldername, "%s/%s",
1362 &foldername[strlen(irlparms->oldname) + 1]
1365 newfloor = imap_roomname(newroomname,
1367 newfoldername) & 0xFF;
1369 irlp = (struct irl *) malloc(sizeof(struct irl));
1370 strcpy(irlp->irl_newroom, newroomname);
1371 strcpy(irlp->irl_oldroom, qrbuf->QRname);
1372 irlp->irl_newfloor = newfloor;
1373 irlp->next = *(irlparms->irl);
1374 *(irlparms->irl) = irlp;
1380 * Implements the RENAME command
1383 void imap_rename(int num_parms, ConstStr *Params)
1385 char old_room[ROOMNAMELEN];
1386 char new_room[ROOMNAMELEN];
1390 struct irl *irl = NULL; /* the list */
1391 struct irl *irlp = NULL; /* scratch pointer */
1392 struct irlparms irlparms;
1395 if (strchr(Params[3].Key, '\\') != NULL) {
1396 IReply("NO Invalid character in folder name");
1400 oldr = imap_roomname(old_room, sizeof old_room, Params[2].Key);
1401 newr = imap_roomname(new_room, sizeof new_room, Params[3].Key);
1402 new_floor = (newr & 0xFF);
1404 r = CtdlRenameRoom(old_room, new_room, new_floor);
1406 if (r == crr_room_not_found) {
1407 IReply("NO Could not locate this folder");
1410 if (r == crr_already_exists) {
1411 IReplyPrintf("NO '%s' already exists.");
1414 if (r == crr_noneditable) {
1415 IReply("NO This folder is not editable.");
1418 if (r == crr_invalid_floor) {
1419 IReply("NO Folder root does not exist.");
1422 if (r == crr_access_denied) {
1423 IReply("NO You do not have permission to edit this folder.");
1427 IReplyPrintf("NO Rename failed - undefined error %d", r);
1431 /* If this is the INBOX, then RFC2060 says we have to just move the
1432 * contents. In a Citadel environment it's easier to rename the room
1433 * (already did that) and create a new inbox.
1435 if (!strcasecmp(Params[2].Key, "INBOX")) {
1436 CtdlCreateRoom(MAILROOM, 4, "", 0, 1, 0, VIEW_MAILBOX);
1439 /* Otherwise, do the subfolders. Build a list of rooms to rename... */
1441 irlparms.oldname = Params[2].Key;
1442 irlparms.newname = Params[3].Key;
1443 irlparms.irl = &irl;
1444 CtdlForEachRoom(imap_rename_backend, (void *) &irlparms);
1446 /* ... and now rename them. */
1447 while (irl != NULL) {
1448 r = CtdlRenameRoom(irl->irl_oldroom,
1452 /* FIXME handle error returns better */
1453 syslog(LOG_ERR, "CtdlRenameRoom() error %d\n", r);
1461 snprintf(aidemsg, sizeof aidemsg, "IMAP folder \"%s\" renamed to \"%s\" by %s\n",
1466 CtdlAideMessage(aidemsg, "IMAP folder rename");
1468 IReply("OK RENAME completed");
1473 * Main command loop for IMAP sessions.
1475 void imap_command_loop(void)
1477 struct timeval tv1, tv2;
1478 suseconds_t total_time = 0;
1479 int untagged_ok = 1;
1481 const char *pchs, *pche;
1482 const imap_handler_hook *h;
1484 gettimeofday(&tv1, NULL);
1485 CC->lastcmd = time(NULL);
1489 if (Imap->Cmd.CmdBuf == NULL)
1490 Imap->Cmd.CmdBuf = NewStrBufPlain(NULL, SIZ);
1492 FlushStrBuf(Imap->Cmd.CmdBuf);
1494 if (CtdlClientGetLine(Imap->Cmd.CmdBuf) < 1) {
1495 syslog(LOG_ERR, "Client disconnected: ending session.\r\n");
1496 CC->kill_me = KILLME_CLIENT_DISCONNECTED;
1500 if (Imap->authstate == imap_as_expecting_password) {
1501 syslog(LOG_INFO, "IMAP: <password>\n");
1503 else if (Imap->authstate == imap_as_expecting_plainauth) {
1504 syslog(LOG_INFO, "IMAP: <plain_auth>\n");
1506 else if ((Imap->authstate == imap_as_expecting_multilineusername) ||
1507 cbmstrcasestr(ChrPtr(Imap->Cmd.CmdBuf), " LOGIN ")) {
1508 syslog(LOG_INFO, "IMAP: LOGIN...\n");
1511 syslog(LOG_INFO, "IMAP: %s\n", ChrPtr(Imap->Cmd.CmdBuf));
1514 pchs = ChrPtr(Imap->Cmd.CmdBuf);
1515 pche = pchs + StrLength(Imap->Cmd.CmdBuf);
1517 while ((pche > pchs) &&
1522 StrBufCutRight(Imap->Cmd.CmdBuf, 1);
1524 StrBufTrim(Imap->Cmd.CmdBuf);
1526 /* If we're in the middle of a multi-line command, handle that */
1527 switch (Imap->authstate){
1528 case imap_as_expecting_username:
1529 imap_auth_login_user(imap_as_expecting_username);
1532 case imap_as_expecting_multilineusername:
1533 imap_auth_login_user(imap_as_expecting_multilineusername);
1536 case imap_as_expecting_plainauth:
1540 case imap_as_expecting_password:
1541 imap_auth_login_pass(imap_as_expecting_password);
1544 case imap_as_expecting_multilinepassword:
1545 imap_auth_login_pass(imap_as_expecting_multilinepassword);
1552 /* Ok, at this point we're in normal command mode.
1553 * If the command just submitted does not contain a literal, we
1554 * might think about delivering some untagged stuff...
1556 if (*(ChrPtr(Imap->Cmd.CmdBuf) + StrLength(Imap->Cmd.CmdBuf) - 1)
1561 /* Grab the tag, command, and parameters. */
1562 imap_parameterize(&Imap->Cmd);
1564 /* debug output the parsed vector */
1567 syslog(LOG_DEBUG, "----- %ld params \n",
1568 Imap->Cmd.num_parms);
1570 for (i=0; i < Imap->Cmd.num_parms; i++) {
1571 if (Imap->Cmd.Params[i].len != strlen(Imap->Cmd.Params[i].Key))
1572 syslog(LOG_DEBUG, "*********** %ld != %ld : %s\n",
1573 Imap->Cmd.Params[i].len,
1574 strlen(Imap->Cmd.Params[i].Key),
1575 Imap->Cmd.Params[i].Key);
1577 syslog(LOG_DEBUG, "%ld : %s\n",
1578 Imap->Cmd.Params[i].len,
1579 Imap->Cmd.Params[i].Key);
1583 /* Now for the command set. */
1584 h = imap_lookup(Imap->Cmd.num_parms, Imap->Cmd.Params);
1588 IReply("BAD command unrecognized");
1592 /* RFC3501 says that we cannot output untagged data during these commands */
1593 if ((h->Flags & I_FLAG_UNTAGGED) == 0) {
1595 /* we can put any additional untagged stuff right here in the future */
1598 * Before processing the command that was just entered... if we happen
1599 * to have a folder selected, we'd like to rescan that folder for new
1600 * messages, and for deletions/changes of existing messages. This
1601 * could probably be optimized better with some deep thought...
1603 if (Imap->selected) {
1604 imap_rescan_msgids();
1608 /* does our command require a logged-in state */
1609 if ((!CC->logged_in) && ((h->Flags & I_FLAG_LOGGED_IN) != 0)) {
1610 IReply("BAD Not logged in.");
1614 /* does our command require the SELECT state on a mailbox */
1615 if ((Imap->selected == 0) && ((h->Flags & I_FLAG_SELECT) != 0)){
1616 IReply("BAD no folder selected");
1619 h->h(Imap->Cmd.num_parms, Imap->Cmd.Params);
1621 /* If the client transmitted a message we can free it now */
1626 imap_free_transmitted_message();
1628 gettimeofday(&tv2, NULL);
1629 total_time = (tv2.tv_usec + (tv2.tv_sec * 1000000)) - (tv1.tv_usec + (tv1.tv_sec * 1000000));
1630 syslog(LOG_DEBUG, "IMAP command completed in %ld.%ld seconds\n",
1631 (total_time / 1000000),
1632 (total_time % 1000000)
1636 void imap_noop (int num_parms, ConstStr *Params)
1638 IReply("OK No operation");
1641 void imap_logout(int num_parms, ConstStr *Params)
1643 if (IMAP->selected) {
1644 imap_do_expunge(); /* yes, we auto-expunge at logout */
1646 IAPrintf("* BYE %s logging out\r\n", config.c_fqdn);
1647 IReply("OK Citadel IMAP session ended.");
1648 CC->kill_me = KILLME_CLIENT_LOGGED_OUT;
1652 const char *CitadelServiceIMAP="IMAP";
1653 const char *CitadelServiceIMAPS="IMAPS";
1657 * This function is called to register the IMAP extension with Citadel.
1659 CTDL_MODULE_INIT(imap)
1661 if (ImapCmds == NULL)
1662 ImapCmds = NewHash(1, NULL);
1664 RegisterImapCMD("NOOP", "", imap_noop, I_FLAG_NONE);
1665 RegisterImapCMD("CHECK", "", imap_noop, I_FLAG_NONE);
1666 RegisterImapCMD("ID", "", imap_id, I_FLAG_NONE);
1667 RegisterImapCMD("LOGOUT", "", imap_logout, I_FLAG_NONE);
1668 RegisterImapCMD("LOGIN", "", imap_login, I_FLAG_NONE);
1669 RegisterImapCMD("AUTHENTICATE", "", imap_authenticate, I_FLAG_NONE);
1670 RegisterImapCMD("CAPABILITY", "", imap_capability, I_FLAG_NONE);
1672 RegisterImapCMD("STARTTLS", "", imap_starttls, I_FLAG_NONE);
1675 /* The commans below require a logged-in state */
1676 RegisterImapCMD("SELECT", "", imap_select, I_FLAG_LOGGED_IN);
1677 RegisterImapCMD("EXAMINE", "", imap_select, I_FLAG_LOGGED_IN);
1678 RegisterImapCMD("LSUB", "", imap_list, I_FLAG_LOGGED_IN);
1679 RegisterImapCMD("LIST", "", imap_list, I_FLAG_LOGGED_IN);
1680 RegisterImapCMD("CREATE", "", imap_create, I_FLAG_LOGGED_IN);
1681 RegisterImapCMD("DELETE", "", imap_delete, I_FLAG_LOGGED_IN);
1682 RegisterImapCMD("RENAME", "", imap_rename, I_FLAG_LOGGED_IN);
1683 RegisterImapCMD("STATUS", "", imap_status, I_FLAG_LOGGED_IN);
1684 RegisterImapCMD("SUBSCRIBE", "", imap_subscribe, I_FLAG_LOGGED_IN);
1685 RegisterImapCMD("UNSUBSCRIBE", "", imap_unsubscribe, I_FLAG_LOGGED_IN);
1686 RegisterImapCMD("APPEND", "", imap_append, I_FLAG_LOGGED_IN);
1687 RegisterImapCMD("NAMESPACE", "", imap_namespace, I_FLAG_LOGGED_IN);
1688 RegisterImapCMD("SETACL", "", imap_setacl, I_FLAG_LOGGED_IN);
1689 RegisterImapCMD("DELETEACL", "", imap_deleteacl, I_FLAG_LOGGED_IN);
1690 RegisterImapCMD("GETACL", "", imap_getacl, I_FLAG_LOGGED_IN);
1691 RegisterImapCMD("LISTRIGHTS", "", imap_listrights, I_FLAG_LOGGED_IN);
1692 RegisterImapCMD("MYRIGHTS", "", imap_myrights, I_FLAG_LOGGED_IN);
1693 RegisterImapCMD("GETMETADATA", "", imap_getmetadata, I_FLAG_LOGGED_IN);
1694 RegisterImapCMD("SETMETADATA", "", imap_setmetadata, I_FLAG_LOGGED_IN);
1696 /* The commands below require the SELECT state on a mailbox */
1697 RegisterImapCMD("FETCH", "", imap_fetch, I_FLAG_LOGGED_IN | I_FLAG_SELECT | I_FLAG_UNTAGGED);
1698 RegisterImapCMD("UID", "FETCH", imap_uidfetch, I_FLAG_LOGGED_IN | I_FLAG_SELECT);
1699 RegisterImapCMD("SEARCH", "", imap_search, I_FLAG_LOGGED_IN | I_FLAG_SELECT | I_FLAG_UNTAGGED);
1700 RegisterImapCMD("UID", "SEARCH", imap_uidsearch, I_FLAG_LOGGED_IN | I_FLAG_SELECT);
1701 RegisterImapCMD("STORE", "", imap_store, I_FLAG_LOGGED_IN | I_FLAG_SELECT | I_FLAG_UNTAGGED);
1702 RegisterImapCMD("UID", "STORE", imap_uidstore, I_FLAG_LOGGED_IN | I_FLAG_SELECT);
1703 RegisterImapCMD("COPY", "", imap_copy, I_FLAG_LOGGED_IN | I_FLAG_SELECT);
1704 RegisterImapCMD("UID", "COPY", imap_uidcopy, I_FLAG_LOGGED_IN | I_FLAG_SELECT);
1705 RegisterImapCMD("EXPUNGE", "", imap_expunge, I_FLAG_LOGGED_IN | I_FLAG_SELECT);
1706 RegisterImapCMD("UID", "EXPUNGE", imap_expunge, I_FLAG_LOGGED_IN | I_FLAG_SELECT);
1707 RegisterImapCMD("CLOSE", "", imap_close, I_FLAG_LOGGED_IN | I_FLAG_SELECT);
1711 CtdlRegisterServiceHook(config.c_imap_port,
1712 NULL, imap_greeting, imap_command_loop, NULL, CitadelServiceIMAP);
1714 CtdlRegisterServiceHook(config.c_imaps_port,
1715 NULL, imaps_greeting, imap_command_loop, NULL, CitadelServiceIMAPS);
1717 CtdlRegisterSessionHook(imap_cleanup_function, EVT_STOP);
1718 CtdlRegisterCleanupHook(imap_cleanup);
1721 /* return our Subversion id for the Log */