4 * IMAP server for the Citadel system
5 * Copyright (C) 2000-2005 by Art Cancro and others.
6 * This code is released under the terms of the GNU General Public License.
8 * WARNING: the IMAP protocol is badly designed. No implementation of it
9 * is perfect. Indeed, with so much gratuitous complexity, *all* IMAP
10 * implementations have bugs.
21 #include <sys/types.h>
23 #if TIME_WITH_SYS_TIME
24 # include <sys/time.h>
28 # include <sys/time.h>
40 #include "sysdep_decls.h"
41 #include "citserver.h"
44 #include "serv_extensions.h"
51 #include "internet_addressing.h"
52 #include "serv_imap.h"
53 #include "imap_tools.h"
54 #include "imap_fetch.h"
55 #include "imap_search.h"
56 #include "imap_store.h"
57 #include "imap_misc.h"
60 #include "serv_crypto.h"
63 /* imap_rename() uses this struct containing list of rooms to rename */
66 char irl_oldroom[ROOMNAMELEN];
67 char irl_newroom[ROOMNAMELEN];
71 /* Data which is passed between imap_rename() and imap_rename_backend() */
80 * If there is a message ID map in memory, free it
82 void imap_free_msgids(void)
84 if (IMAP->msgids != NULL) {
89 if (IMAP->flags != NULL) {
97 * If there is a transmitted message in memory, free it
99 void imap_free_transmitted_message(void)
101 if (IMAP->transmitted_message != NULL) {
102 free(IMAP->transmitted_message);
103 IMAP->transmitted_message = NULL;
104 IMAP->transmitted_length = 0;
110 * Set the \\Seen flag for messages which aren't new
112 void imap_set_seen_flags(void)
117 CtdlGetRelationship(&vbuf, &CC->user, &CC->room);
118 if (IMAP->num_msgs > 0) {
119 for (i = 0; i < IMAP->num_msgs; ++i) {
120 if (is_msg_in_mset(vbuf.v_seen, IMAP->msgids[i])) {
121 IMAP->flags[i] |= IMAP_SEEN;
124 IMAP->flags[i] |= IMAP_RECENT;
127 (vbuf.v_answered, IMAP->msgids[i])) {
128 IMAP->flags[i] |= IMAP_ANSWERED;
138 * Back end for imap_load_msgids()
140 * Optimization: instead of calling realloc() to add each message, we
141 * allocate space in the list for REALLOC_INCREMENT messages at a time. This
142 * allows the mapping to proceed much faster.
144 void imap_add_single_msgid(long msgnum, void *userdata)
147 IMAP->num_msgs = IMAP->num_msgs + 1;
148 if (IMAP->msgids == NULL) {
149 IMAP->msgids = malloc(IMAP->num_msgs * sizeof(long)
150 * REALLOC_INCREMENT);
151 } else if (IMAP->num_msgs % REALLOC_INCREMENT == 0) {
152 IMAP->msgids = realloc(IMAP->msgids,
154 REALLOC_INCREMENT) * sizeof(long));
156 if (IMAP->flags == NULL) {
157 IMAP->flags = malloc(IMAP->num_msgs * sizeof(long)
158 * REALLOC_INCREMENT);
159 } else if (IMAP->num_msgs % REALLOC_INCREMENT == 0) {
160 IMAP->flags = realloc(IMAP->flags,
162 REALLOC_INCREMENT) * sizeof(long));
164 IMAP->msgids[IMAP->num_msgs - 1] = msgnum;
165 IMAP->flags[IMAP->num_msgs - 1] = 0;
171 * Set up a message ID map for the current room (folder)
173 void imap_load_msgids(void)
176 if (IMAP->selected == 0) {
178 "imap_load_msgids() can't run; no room selected\n");
182 imap_free_msgids(); /* If there was already a map, free it */
184 CtdlForEachMessage(MSGS_ALL, 0L, NULL, NULL,
185 imap_add_single_msgid, NULL);
187 imap_set_seen_flags();
188 /* lprintf(CTDL_DEBUG, "imap_load_msgids() mapped %d messages\n",
194 * Re-scan the selected room (folder) and see if it's been changed at all
196 void imap_rescan_msgids(void)
199 int original_num_msgs = 0;
200 long original_highest = 0L;
202 int message_still_exists;
203 struct cdbdata *cdbfr;
204 long *msglist = NULL;
209 if (IMAP->selected == 0) {
211 "imap_load_msgids() can't run; no room selected\n");
215 /* Load the *current* message list from disk, so we can compare it
216 * to what we have in memory.
218 cdbfr = cdb_fetch(CDB_MSGLISTS, &CC->room.QRnumber, sizeof(long));
220 msglist = malloc(cdbfr->len);
221 if (msglist == NULL) {
222 lprintf(CTDL_CRIT, "malloc() failed\n");
225 memcpy(msglist, cdbfr->ptr, (size_t)cdbfr->len);
226 num_msgs = cdbfr->len / sizeof(long);
233 * Check to see if any of the messages we know about have been expunged
235 if (IMAP->num_msgs > 0)
236 for (i = 0; i < IMAP->num_msgs; ++i) {
238 message_still_exists = 0;
240 for (j = 0; j < num_msgs; ++j) {
241 if (msglist[j] == IMAP->msgids[i]) {
242 message_still_exists = 1;
246 if (message_still_exists == 0) {
247 cprintf("* %d EXPUNGE\r\n", i + 1);
249 /* Here's some nice stupid nonsense. When a message
250 * is expunged, we have to slide all the existing
251 * messages up in the message array.
254 memcpy(&IMAP->msgids[i],
255 &IMAP->msgids[i + 1],
257 (IMAP->num_msgs - i)));
258 memcpy(&IMAP->flags[i],
261 (IMAP->num_msgs - i)));
269 * Remember how many messages were here before we re-scanned.
271 original_num_msgs = IMAP->num_msgs;
272 if (IMAP->num_msgs > 0) {
273 original_highest = IMAP->msgids[IMAP->num_msgs - 1];
275 original_highest = 0L;
279 * Now peruse the room for *new* messages only.
282 for (j = 0; j < num_msgs; ++j) {
283 if (msglist[j] > original_highest) {
284 imap_add_single_msgid(msglist[j], NULL);
287 imap_set_seen_flags();
290 * If new messages have arrived, tell the client about them.
292 if (IMAP->num_msgs > original_num_msgs) {
294 for (j = 0; j < num_msgs; ++j) {
295 if (IMAP->flags[j] & IMAP_RECENT) {
300 cprintf("* %d EXISTS\r\n", IMAP->num_msgs);
301 cprintf("* %d RECENT\r\n", num_recent);
315 * This cleanup function blows away the temporary memory and files used by
318 void imap_cleanup_function(void)
321 /* Don't do this stuff if this is not a IMAP session! */
322 if (CC->h_command_function != imap_command_loop)
325 /* If there is a mailbox selected, auto-expunge it. */
326 if (IMAP->selected) {
330 lprintf(CTDL_DEBUG, "Performing IMAP cleanup hook\n");
332 imap_free_transmitted_message();
334 if (IMAP->cached_rfc822_data != NULL) {
335 free(IMAP->cached_rfc822_data);
336 IMAP->cached_rfc822_data = NULL;
337 IMAP->cached_rfc822_msgnum = (-1);
340 if (IMAP->cached_body != NULL) {
341 free(IMAP->cached_body);
342 IMAP->cached_body = NULL;
343 IMAP->cached_body_len = 0;
344 IMAP->cached_bodymsgnum = (-1);
348 lprintf(CTDL_DEBUG, "Finished IMAP cleanup hook\n");
354 * Here's where our IMAP session begins its happy day.
356 void imap_greeting(void)
359 strcpy(CC->cs_clientname, "IMAP session");
360 IMAP = malloc(sizeof (struct citimap));
361 IMAP->authstate = imap_as_normal;
362 IMAP->cached_rfc822_data = NULL;
363 IMAP->cached_rfc822_msgnum = (-1);
365 cprintf("* OK %s Citadel IMAP4rev1 server ready\r\n",
370 * IMAPS is just like IMAP, except it goes crypto right away.
373 void imaps_greeting(void) {
374 CtdlStartTLS(NULL, NULL, NULL);
381 * implements the LOGIN command (ordinary username/password login)
383 void imap_login(int num_parms, char *parms[])
385 if (num_parms != 4) {
386 cprintf("%s BAD incorrect number of parameters\r\n", parms[0]);
390 if (CtdlLoginExistingUser(parms[2]) == login_ok) {
391 if (CtdlTryPassword(parms[3]) == pass_ok) {
392 cprintf("%s OK login successful\r\n", parms[0]);
397 cprintf("%s BAD Login incorrect\r\n", parms[0]);
402 * Implements the AUTHENTICATE command
404 void imap_authenticate(int num_parms, char *parms[])
408 if (num_parms != 3) {
409 cprintf("%s BAD incorrect number of parameters\r\n",
415 cprintf("%s BAD Already logged in.\r\n", parms[0]);
419 if (!strcasecmp(parms[2], "LOGIN")) {
420 CtdlEncodeBase64(buf, "Username:", 9);
421 cprintf("+ %s\r\n", buf);
422 IMAP->authstate = imap_as_expecting_username;
423 strcpy(IMAP->authseq, parms[0]);
428 cprintf("%s NO AUTHENTICATE %s failed\r\n",
433 void imap_auth_login_user(char *cmd)
437 CtdlDecodeBase64(buf, cmd, SIZ);
438 CtdlLoginExistingUser(buf);
439 CtdlEncodeBase64(buf, "Password:", 9);
440 cprintf("+ %s\r\n", buf);
441 IMAP->authstate = imap_as_expecting_password;
445 void imap_auth_login_pass(char *cmd)
449 CtdlDecodeBase64(buf, cmd, SIZ);
450 if (CtdlTryPassword(buf) == pass_ok) {
451 cprintf("%s OK authentication succeeded\r\n",
454 cprintf("%s NO authentication failed\r\n", IMAP->authseq);
456 IMAP->authstate = imap_as_normal;
462 * implements the CAPABILITY command
464 void imap_capability(int num_parms, char *parms[])
466 cprintf("* CAPABILITY IMAP4 IMAP4REV1 NAMESPACE AUTH=LOGIN");
469 cprintf(" STARTTLS");
473 cprintf("%s OK CAPABILITY completed\r\n", parms[0]);
479 * implements the STARTTLS command (Citadel API version)
482 void imap_starttls(int num_parms, char *parms[])
484 char ok_response[SIZ];
485 char nosup_response[SIZ];
486 char error_response[SIZ];
489 "%s OK begin TLS negotiation now\r\n",
491 sprintf(nosup_response,
492 "%s NO TLS not supported here\r\n",
494 sprintf(error_response,
495 "%s BAD Internal error\r\n",
497 CtdlStartTLS(ok_response, nosup_response, error_response);
503 * implements the SELECT command
505 void imap_select(int num_parms, char *parms[])
508 char augmented_roomname[ROOMNAMELEN];
512 struct ctdlroom QRscratch;
518 /* Convert the supplied folder name to a roomname */
519 i = imap_roomname(towhere, sizeof towhere, parms[2]);
521 cprintf("%s NO Invalid mailbox name.\r\n", parms[0]);
525 floornum = (i & 0x00ff);
526 roomflags = (i & 0xff00);
528 /* First try a regular match */
529 c = getroom(&QRscratch, towhere);
531 /* Then try a mailbox name match */
533 MailboxName(augmented_roomname, sizeof augmented_roomname,
535 c = getroom(&QRscratch, augmented_roomname);
537 strcpy(towhere, augmented_roomname);
540 /* If the room exists, check security/access */
542 /* See if there is an existing user/room relationship */
543 CtdlRoomAccess(&QRscratch, &CC->user, &ra, NULL);
545 /* normal clients have to pass through security */
551 /* Fail here if no such room */
553 cprintf("%s NO ... no such room, or access denied\r\n",
558 /* If we already had some other folder selected, auto-expunge it */
562 * usergoto() formally takes us to the desired room, happily returning
563 * the number of messages and number of new messages.
565 memcpy(&CC->room, &QRscratch, sizeof(struct ctdlroom));
566 usergoto(NULL, 0, 0, &msgs, &new);
569 if (!strcasecmp(parms[1], "EXAMINE")) {
577 cprintf("* %d EXISTS\r\n", msgs);
578 cprintf("* %d RECENT\r\n", new);
580 /* Note that \Deleted is a valid flag, but not a permanent flag,
581 * because we don't maintain its state across sessions. Citadel
582 * automatically expunges mailboxes when they are de-selected.
584 cprintf("* FLAGS (\\Deleted \\Seen \\Answered)\r\n");
585 cprintf("* OK [PERMANENTFLAGS (\\Seen \\Answered)] "
586 "permanent flags\r\n");
588 cprintf("* OK [UIDVALIDITY 0] UIDs valid\r\n");
589 cprintf("%s OK [%s] %s completed\r\n",
591 (IMAP->readonly ? "READ-ONLY" : "READ-WRITE"), parms[1]);
597 * does the real work for expunge
599 int imap_do_expunge(void)
602 int num_expunged = 0;
604 lprintf(CTDL_DEBUG, "imap_do_expunge() called\n");
605 if (IMAP->selected == 0) {
609 if (IMAP->num_msgs > 0)
610 for (i = 0; i < IMAP->num_msgs; ++i) {
611 if (IMAP->flags[i] & IMAP_DELETED) {
612 CtdlDeleteMessages(CC->room.QRname,
613 IMAP->msgids[i], "");
618 if (num_expunged > 0) {
619 imap_rescan_msgids();
622 lprintf(CTDL_DEBUG, "Expunged %d messages.\n", num_expunged);
623 return (num_expunged);
628 * implements the EXPUNGE command syntax
630 void imap_expunge(int num_parms, char *parms[])
632 int num_expunged = 0;
634 num_expunged = imap_do_expunge();
635 cprintf("%s OK expunged %d messages.\r\n", parms[0], num_expunged);
640 * implements the CLOSE command
642 void imap_close(int num_parms, char *parms[])
645 /* Yes, we always expunge on close. */
646 if (IMAP->selected) {
653 cprintf("%s OK CLOSE completed\r\n", parms[0]);
658 * Implements the NAMESPACE command.
660 void imap_namespace(int num_parms, char *parms[])
667 cprintf("* NAMESPACE ");
669 /* All personal folders are subordinate to INBOX. */
670 cprintf("((\"INBOX/\" \"/\")) ");
672 /* Other users' folders ... coming soon! FIXME */
675 /* Show all floors as shared namespaces. Neato! */
677 for (i = 0; i < MAXFLOORS; ++i) {
679 if (fl->f_flags & F_INUSE) {
680 if (floors > 0) cprintf(" ");
682 sprintf(buf, "%s/", fl->f_name);
690 /* Wind it up with a newline and a completion message. */
692 cprintf("%s OK NAMESPACE completed\r\n", parms[0]);
698 * Used by LIST and LSUB to show the floors in the listing
700 void imap_list_floors(char *cmd, char *pattern)
705 for (i = 0; i < MAXFLOORS; ++i) {
707 if (fl->f_flags & F_INUSE) {
708 if (imap_mailbox_matches_pattern
709 (pattern, fl->f_name)) {
710 cprintf("* %s (\\NoSelect) \"/\" ", cmd);
711 imap_strout(fl->f_name);
721 * Back end for imap_lsub()
723 * IMAP "subscribed folder" is equivocated to Citadel "known rooms." This
724 * may or may not be the desired behavior in the future.
726 void imap_lsub_listroom(struct ctdlroom *qrbuf, void *data)
732 pattern = (char *) data;
734 /* Only list rooms to which the user has access!! */
735 CtdlRoomAccess(qrbuf, &CC->user, &ra, NULL);
737 imap_mailboxname(buf, sizeof buf, qrbuf);
738 if (imap_mailbox_matches_pattern(pattern, buf)) {
739 cprintf("* LSUB () \"/\" ");
748 * Implements the LSUB command
750 void imap_lsub(int num_parms, char *parms[])
754 cprintf("%s BAD arguments invalid\r\n", parms[0]);
757 snprintf(pattern, sizeof pattern, "%s%s", parms[2], parms[3]);
759 if (strlen(parms[3]) == 0) {
760 cprintf("* LIST (\\Noselect) \"/\" \"\"\r\n");
764 imap_list_floors("LSUB", pattern);
765 ForEachRoom(imap_lsub_listroom, pattern);
768 cprintf("%s OK LSUB completed\r\n", parms[0]);
774 * Back end for imap_list()
776 void imap_list_listroom(struct ctdlroom *qrbuf, void *data)
782 pattern = (char *) data;
784 /* Only list rooms to which the user has access!! */
785 CtdlRoomAccess(qrbuf, &CC->user, &ra, NULL);
787 || ((ra & UA_GOTOALLOWED) && (ra & UA_ZAPPED))) {
788 imap_mailboxname(buf, sizeof buf, qrbuf);
789 if (imap_mailbox_matches_pattern(pattern, buf)) {
790 cprintf("* LIST () \"/\" ");
799 * Implements the LIST command
801 void imap_list(int num_parms, char *parms[])
805 cprintf("%s BAD arguments invalid\r\n", parms[0]);
808 snprintf(pattern, sizeof pattern, "%s%s", parms[2], parms[3]);
810 if (strlen(parms[3]) == 0) {
811 cprintf("* LIST (\\Noselect) \"/\" \"\"\r\n");
815 imap_list_floors("LIST", pattern);
816 ForEachRoom(imap_list_listroom, pattern);
819 cprintf("%s OK LIST completed\r\n", parms[0]);
825 * Implements the CREATE command
828 void imap_create(int num_parms, char *parms[])
831 char roomname[ROOMNAMELEN];
837 if (strchr(parms[2], '\\') != NULL) {
838 cprintf("%s NO Invalid character in folder name\r\n",
840 lprintf(CTDL_DEBUG, "invalid character in folder name\n");
844 ret = imap_roomname(roomname, sizeof roomname, parms[2]);
846 cprintf("%s NO Invalid mailbox name or location\r\n",
848 lprintf(CTDL_DEBUG, "invalid mailbox name or location\n");
851 floornum = (ret & 0x00ff); /* lower 8 bits = floor number */
852 flags = (ret & 0xff00); /* upper 8 bits = flags */
854 if (flags & IR_MAILBOX) {
855 if (strncasecmp(parms[2], "INBOX/", 6)) {
856 cprintf("%s NO Personal folders must be created under INBOX\r\n", parms[0]);
857 lprintf(CTDL_DEBUG, "not subordinate to inbox\n");
862 if (flags & IR_MAILBOX) {
863 newroomtype = 4; /* private mailbox */
864 newroomview = VIEW_MAILBOX;
866 newroomtype = 0; /* public folder */
867 newroomview = VIEW_BBS;
870 lprintf(CTDL_INFO, "Create new room <%s> on floor <%d> with type <%d>\n",
871 roomname, floornum, newroomtype);
873 ret = create_room(roomname, newroomtype, "", floornum, 1, 0, newroomview);
876 ("%s NO Mailbox already exists, or create failed\r\n",
879 cprintf("%s OK CREATE completed\r\n", parms[0]);
881 lprintf(CTDL_DEBUG, "imap_create() completed\n");
886 * Locate a room by its IMAP folder name, and check access to it.
887 * If zapped_ok is nonzero, we can also look for the room in the zapped list.
889 int imap_grabroom(char *returned_roomname, char *foldername, int zapped_ok)
892 char augmented_roomname[ROOMNAMELEN];
893 char roomname[ROOMNAMELEN];
895 struct ctdlroom QRscratch;
899 ret = imap_roomname(roomname, sizeof roomname, foldername);
904 /* First try a regular match */
905 c = getroom(&QRscratch, roomname);
907 /* Then try a mailbox name match */
909 MailboxName(augmented_roomname, sizeof augmented_roomname,
910 &CC->user, roomname);
911 c = getroom(&QRscratch, augmented_roomname);
913 strcpy(roomname, augmented_roomname);
916 /* If the room exists, check security/access */
918 /* See if there is an existing user/room relationship */
919 CtdlRoomAccess(&QRscratch, &CC->user, &ra, NULL);
921 /* normal clients have to pass through security */
925 if ((zapped_ok) && (ra & UA_ZAPPED)) {
930 /* Fail here if no such room */
932 strcpy(returned_roomname, "");
935 strcpy(returned_roomname, QRscratch.QRname);
942 * Implements the STATUS command (sort of)
945 void imap_status(int num_parms, char *parms[])
948 char roomname[ROOMNAMELEN];
950 char savedroom[ROOMNAMELEN];
953 ret = imap_grabroom(roomname, parms[2], 0);
956 ("%s NO Invalid mailbox name or location, or access denied\r\n",
962 * usergoto() formally takes us to the desired room, happily returning
963 * the number of messages and number of new messages. (If another
964 * folder is selected, save its name so we can return there!!!!!)
966 if (IMAP->selected) {
967 strcpy(savedroom, CC->room.QRname);
969 usergoto(roomname, 0, 0, &msgs, &new);
972 * Tell the client what it wants to know. In fact, tell it *more* than
973 * it wants to know. We happily IGnore the supplied status data item
974 * names and simply spew all possible data items. It's far easier to
975 * code and probably saves us some processing time too.
977 imap_mailboxname(buf, sizeof buf, &CC->room);
978 cprintf("* STATUS ");
980 cprintf(" (MESSAGES %d ", msgs);
981 cprintf("RECENT %d ", new); /* Initially, new==recent */
982 cprintf("UIDNEXT %ld ", CitControl.MMhighest + 1);
983 cprintf("UNSEEN %d)\r\n", new);
986 * If another folder is selected, go back to that room so we can resume
987 * our happy day without violent explosions.
989 if (IMAP->selected) {
990 usergoto(savedroom, 0, 0, &msgs, &new);
994 * Oooh, look, we're done!
996 cprintf("%s OK STATUS completed\r\n", parms[0]);
1002 * Implements the SUBSCRIBE command
1005 void imap_subscribe(int num_parms, char *parms[])
1008 char roomname[ROOMNAMELEN];
1009 char savedroom[ROOMNAMELEN];
1012 ret = imap_grabroom(roomname, parms[2], 1);
1015 "%s NO Error %d: invalid mailbox name or location, or access denied\r\n",
1023 * usergoto() formally takes us to the desired room, which has the side
1024 * effect of marking the room as not-zapped ... exactly the effect
1025 * we're looking for.
1027 if (IMAP->selected) {
1028 strcpy(savedroom, CC->room.QRname);
1030 usergoto(roomname, 0, 0, &msgs, &new);
1033 * If another folder is selected, go back to that room so we can resume
1034 * our happy day without violent explosions.
1036 if (IMAP->selected) {
1037 usergoto(savedroom, 0, 0, &msgs, &new);
1040 cprintf("%s OK SUBSCRIBE completed\r\n", parms[0]);
1045 * Implements the UNSUBSCRIBE command
1048 void imap_unsubscribe(int num_parms, char *parms[])
1051 char roomname[ROOMNAMELEN];
1052 char savedroom[ROOMNAMELEN];
1055 ret = imap_grabroom(roomname, parms[2], 0);
1058 ("%s NO Invalid mailbox name or location, or access denied\r\n",
1064 * usergoto() formally takes us to the desired room.
1066 if (IMAP->selected) {
1067 strcpy(savedroom, CC->room.QRname);
1069 usergoto(roomname, 0, 0, &msgs, &new);
1072 * Now make the API call to zap the room
1074 if (CtdlForgetThisRoom() == 0) {
1075 cprintf("%s OK UNSUBSCRIBE completed\r\n", parms[0]);
1078 ("%s NO You may not unsubscribe from this folder.\r\n",
1083 * If another folder is selected, go back to that room so we can resume
1084 * our happy day without violent explosions.
1086 if (IMAP->selected) {
1087 usergoto(savedroom, 0, 0, &msgs, &new);
1094 * Implements the DELETE command
1097 void imap_delete(int num_parms, char *parms[])
1100 char roomname[ROOMNAMELEN];
1101 char savedroom[ROOMNAMELEN];
1104 ret = imap_grabroom(roomname, parms[2], 0);
1106 cprintf("%s NO Invalid mailbox name, or access denied\r\n",
1112 * usergoto() formally takes us to the desired room, happily returning
1113 * the number of messages and number of new messages. (If another
1114 * folder is selected, save its name so we can return there!!!!!)
1116 if (IMAP->selected) {
1117 strcpy(savedroom, CC->room.QRname);
1119 usergoto(roomname, 0, 0, &msgs, &new);
1122 * Now delete the room.
1124 if (CtdlDoIHavePermissionToDeleteThisRoom(&CC->room)) {
1125 cprintf("%s OK DELETE completed\r\n", parms[0]);
1126 delete_room(&CC->room);
1128 cprintf("%s NO Can't delete this folder.\r\n", parms[0]);
1132 * If another folder is selected, go back to that room so we can resume
1133 * our happy day without violent explosions.
1135 if (IMAP->selected) {
1136 usergoto(savedroom, 0, 0, &msgs, &new);
1142 * Back end function for imap_rename()
1144 void imap_rename_backend(struct ctdlroom *qrbuf, void *data)
1146 char foldername[SIZ];
1147 char newfoldername[SIZ];
1148 char newroomname[ROOMNAMELEN];
1150 struct irl *irlp = NULL; /* scratch pointer */
1151 struct irlparms *irlparms;
1153 irlparms = (struct irlparms *) data;
1154 imap_mailboxname(foldername, sizeof foldername, qrbuf);
1156 /* Rename subfolders */
1157 if ((!strncasecmp(foldername, irlparms->oldname,
1158 strlen(irlparms->oldname))
1159 && (foldername[strlen(irlparms->oldname)] == '/'))) {
1161 sprintf(newfoldername, "%s/%s",
1163 &foldername[strlen(irlparms->oldname) + 1]
1166 newfloor = imap_roomname(newroomname,
1168 newfoldername) & 0xFF;
1170 irlp = (struct irl *) malloc(sizeof(struct irl));
1171 strcpy(irlp->irl_newroom, newroomname);
1172 strcpy(irlp->irl_oldroom, qrbuf->QRname);
1173 irlp->irl_newfloor = newfloor;
1174 irlp->next = *(irlparms->irl);
1175 *(irlparms->irl) = irlp;
1181 * Implements the RENAME command
1184 void imap_rename(int num_parms, char *parms[])
1186 char old_room[ROOMNAMELEN];
1187 char new_room[ROOMNAMELEN];
1191 struct irl *irl = NULL; /* the list */
1192 struct irl *irlp = NULL; /* scratch pointer */
1193 struct irlparms irlparms;
1195 if (strchr(parms[3], '\\') != NULL) {
1196 cprintf("%s NO Invalid character in folder name\r\n",
1201 oldr = imap_roomname(old_room, sizeof old_room, parms[2]);
1202 newr = imap_roomname(new_room, sizeof new_room, parms[3]);
1203 new_floor = (newr & 0xFF);
1205 r = CtdlRenameRoom(old_room, new_room, new_floor);
1207 if (r == crr_room_not_found) {
1208 cprintf("%s NO Could not locate this folder\r\n",
1212 if (r == crr_already_exists) {
1213 cprintf("%s '%s' already exists.\r\n", parms[0], parms[2]);
1216 if (r == crr_noneditable) {
1217 cprintf("%s This folder is not editable.\r\n", parms[0]);
1220 if (r == crr_invalid_floor) {
1221 cprintf("%s Folder root does not exist.\r\n", parms[0]);
1224 if (r == crr_access_denied) {
1225 cprintf("%s You do not have permission to edit "
1226 "this folder.\r\n", parms[0]);
1230 cprintf("%s NO Rename failed - undefined error %d\r\n",
1236 /* If this is the INBOX, then RFC2060 says we have to just move the
1237 * contents. In a Citadel environment it's easier to rename the room
1238 * (already did that) and create a new inbox.
1240 if (!strcasecmp(parms[2], "INBOX")) {
1241 create_room(MAILROOM, 4, "", 0, 1, 0, VIEW_MAILBOX);
1244 /* Otherwise, do the subfolders. Build a list of rooms to rename... */
1246 irlparms.oldname = parms[2];
1247 irlparms.newname = parms[3];
1248 irlparms.irl = &irl;
1249 ForEachRoom(imap_rename_backend, (void *) &irlparms);
1251 /* ... and now rename them. */
1252 while (irl != NULL) {
1253 r = CtdlRenameRoom(irl->irl_oldroom,
1257 /* FIXME handle error returns better */
1258 lprintf(CTDL_ERR, "CtdlRenameRoom() error %d\n",
1267 cprintf("%s OK RENAME completed\r\n", parms[0]);
1274 * Main command loop for IMAP sessions.
1276 void imap_command_loop(void)
1282 CC->lastcmd = time(NULL);
1283 memset(cmdbuf, 0, sizeof cmdbuf); /* Clear it, just in case */
1285 if (client_getln(cmdbuf, sizeof cmdbuf) < 1) {
1286 lprintf(CTDL_ERR, "IMAP socket is broken. Ending session.\r\n");
1291 lprintf(CTDL_INFO, "IMAP: %s\n", cmdbuf);
1292 while (strlen(cmdbuf) < 5)
1293 strcat(cmdbuf, " ");
1295 /* strip off l/t whitespace and CRLF */
1296 if (cmdbuf[strlen(cmdbuf) - 1] == '\n')
1297 cmdbuf[strlen(cmdbuf) - 1] = 0;
1298 if (cmdbuf[strlen(cmdbuf) - 1] == '\r')
1299 cmdbuf[strlen(cmdbuf) - 1] = 0;
1302 /* If we're in the middle of a multi-line command, handle that */
1303 if (IMAP->authstate == imap_as_expecting_username) {
1304 imap_auth_login_user(cmdbuf);
1307 if (IMAP->authstate == imap_as_expecting_password) {
1308 imap_auth_login_pass(cmdbuf);
1312 /* Ok, at this point we're in normal command mode. The first thing
1313 * we do is print any incoming pages (yeah! we really do!)
1315 imap_print_instant_messages();
1318 * Before processing the command that was just entered... if we happen
1319 * to have a folder selected, we'd like to rescan that folder for new
1320 * messages, and for deletions/changes of existing messages. This
1321 * could probably be optimized somehow, but IMAP sucks...
1323 if (IMAP->selected) {
1324 imap_rescan_msgids();
1327 /* Now for the command set. */
1329 /* Grab the tag, command, and parameters. Check syntax. */
1330 num_parms = imap_parameterize(parms, cmdbuf);
1331 if (num_parms < 2) {
1332 cprintf("BAD syntax error\r\n");
1335 /* The commands below may be executed in any state */
1337 else if ((!strcasecmp(parms[1], "NOOP"))
1338 || (!strcasecmp(parms[1], "CHECK"))) {
1339 cprintf("%s OK This command successfully did nothing.\r\n",
1343 else if (!strcasecmp(parms[1], "LOGOUT")) {
1344 if (IMAP->selected) {
1345 imap_do_expunge(); /* yes, we auto-expunge */
1347 cprintf("* BYE %s logging out\r\n", config.c_fqdn);
1348 cprintf("%s OK thank you for using Citadel IMAP\r\n",
1354 else if (!strcasecmp(parms[1], "LOGIN")) {
1355 imap_login(num_parms, parms);
1358 else if (!strcasecmp(parms[1], "AUTHENTICATE")) {
1359 imap_authenticate(num_parms, parms);
1362 else if (!strcasecmp(parms[1], "CAPABILITY")) {
1363 imap_capability(num_parms, parms);
1366 else if (!strcasecmp(parms[1], "STARTTLS")) {
1367 imap_starttls(num_parms, parms);
1370 else if (!CC->logged_in) {
1371 cprintf("%s BAD Not logged in.\r\n", parms[0]);
1374 /* The commans below require a logged-in state */
1376 else if (!strcasecmp(parms[1], "SELECT")) {
1377 imap_select(num_parms, parms);
1380 else if (!strcasecmp(parms[1], "EXAMINE")) {
1381 imap_select(num_parms, parms);
1384 else if (!strcasecmp(parms[1], "LSUB")) {
1385 imap_lsub(num_parms, parms);
1388 else if (!strcasecmp(parms[1], "LIST")) {
1389 imap_list(num_parms, parms);
1392 else if (!strcasecmp(parms[1], "CREATE")) {
1393 imap_create(num_parms, parms);
1396 else if (!strcasecmp(parms[1], "DELETE")) {
1397 imap_delete(num_parms, parms);
1400 else if (!strcasecmp(parms[1], "RENAME")) {
1401 imap_rename(num_parms, parms);
1404 else if (!strcasecmp(parms[1], "STATUS")) {
1405 imap_status(num_parms, parms);
1408 else if (!strcasecmp(parms[1], "SUBSCRIBE")) {
1409 imap_subscribe(num_parms, parms);
1412 else if (!strcasecmp(parms[1], "UNSUBSCRIBE")) {
1413 imap_unsubscribe(num_parms, parms);
1416 else if (!strcasecmp(parms[1], "APPEND")) {
1417 imap_append(num_parms, parms);
1420 else if (!strcasecmp(parms[1], "NAMESPACE")) {
1421 imap_namespace(num_parms, parms);
1424 else if (IMAP->selected == 0) {
1425 cprintf("%s BAD no folder selected\r\n", parms[0]);
1428 /* The commands below require the SELECT state on a mailbox */
1430 else if (!strcasecmp(parms[1], "FETCH")) {
1431 imap_fetch(num_parms, parms);
1434 else if ((!strcasecmp(parms[1], "UID"))
1435 && (!strcasecmp(parms[2], "FETCH"))) {
1436 imap_uidfetch(num_parms, parms);
1439 else if (!strcasecmp(parms[1], "SEARCH")) {
1440 imap_search(num_parms, parms);
1443 else if ((!strcasecmp(parms[1], "UID"))
1444 && (!strcasecmp(parms[2], "SEARCH"))) {
1445 imap_uidsearch(num_parms, parms);
1448 else if (!strcasecmp(parms[1], "STORE")) {
1449 imap_store(num_parms, parms);
1452 else if ((!strcasecmp(parms[1], "UID"))
1453 && (!strcasecmp(parms[2], "STORE"))) {
1454 imap_uidstore(num_parms, parms);
1457 else if (!strcasecmp(parms[1], "COPY")) {
1458 imap_copy(num_parms, parms);
1461 else if ((!strcasecmp(parms[1], "UID"))
1462 && (!strcasecmp(parms[2], "COPY"))) {
1463 imap_uidcopy(num_parms, parms);
1466 else if (!strcasecmp(parms[1], "EXPUNGE")) {
1467 imap_expunge(num_parms, parms);
1470 else if (!strcasecmp(parms[1], "CLOSE")) {
1471 imap_close(num_parms, parms);
1474 /* End of commands. If we get here, the command is either invalid
1479 cprintf("%s BAD command unrecognized\r\n", parms[0]);
1482 /* If the client transmitted a message we can free it now */
1483 imap_free_transmitted_message();
1489 * This function is called to register the IMAP extension with Citadel.
1491 char *serv_imap_init(void)
1493 CtdlRegisterServiceHook(config.c_imap_port,
1494 NULL, imap_greeting, imap_command_loop, NULL);
1496 CtdlRegisterServiceHook(config.c_imaps_port,
1497 NULL, imaps_greeting, imap_command_loop, NULL);
1499 CtdlRegisterSessionHook(imap_cleanup_function, EVT_STOP);