1 // Message-related protocol commands for Citadel clients
3 // Copyright (c) 1987-2022 by the citadel.org team
5 // This program is open source software; you can redistribute it and/or modify
6 // it under the terms of the GNU General Public License version 3.
8 // This program is distributed in the hope that it will be useful,
9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 // GNU General Public License for more details.
14 #include <libcitadel.h>
15 #include "../../citserver.h"
16 #include "../../ctdl_module.h"
17 #include "../../internet_addressing.h"
18 #include "../../user_ops.h"
19 #include "../../room_ops.h"
20 #include "../../config.h"
22 extern char *msgkeys[];
25 // Back end for the MSGS command: output message number only.
26 void simple_listing(long msgnum, void *userdata) {
27 cprintf("%ld\n", msgnum);
31 // Back end for the MSGS command: output header summary.
32 void headers_listing(long msgnum, void *userdata) {
33 struct CtdlMessage *msg;
34 int output_mode = *(int *)userdata;
36 msg = CtdlFetchMessage(msgnum, 0);
38 cprintf("%ld|0|||||||\n", msgnum);
42 // change all vertical bars in the subject to hyphens so it doesn't screw up the protocol
43 if (!CM_IsEmpty(msg, eMsgSubject)) {
45 for (p=msg->cm_fields[eMsgSubject]; *p; p++) {
52 // output all fields except the references hash
53 cprintf("%ld|%s|%s|%s|%s|%s",
55 (!CM_IsEmpty(msg, eTimestamp) ? msg->cm_fields[eTimestamp] : "0"),
56 (!CM_IsEmpty(msg, eAuthor) ? msg->cm_fields[eAuthor] : ""),
57 CtdlGetConfigStr("c_nodename"), // no more nodenames anymore
58 (!CM_IsEmpty(msg, erFc822Addr) ? msg->cm_fields[erFc822Addr] : ""),
59 (!CM_IsEmpty(msg, eMsgSubject) ? msg->cm_fields[eMsgSubject] : "")
62 if (output_mode == MSG_HDRS_THREADS) { // field view with thread hashes
64 // output the references hash
66 (!CM_IsEmpty(msg, emessageId) ? HashLittle(msg->cm_fields[emessageId],strlen(msg->cm_fields[emessageId])) : 0)
69 // output the references hash (yes it's ok that we're trashing the source buffer by doing this)
70 if (!CM_IsEmpty(msg, eWeferences)) {
72 char *rest = msg->cm_fields[eWeferences];
74 while((token = strtok_r(rest, "|", &rest))) {
75 cprintf("%d%s", HashLittle(token,rest-prev-(*rest==0?0:1)), (*rest==0?"":","));
83 else { // field view with no threads, subject extends out forever
90 typedef struct _msg_filter {
97 void headers_brief_filter(long msgnum, void *userdata) {
99 struct CtdlMessage *msg;
100 msg_filter *flt = (msg_filter*) userdata;
102 l = GetCount(flt->Filter);
103 msg = CtdlFetchMessage(msgnum, 0);
104 StrBufPrintf(flt->buffer, "%ld", msgnum);
106 for (i = 0; i < l; i++) {
107 StrBufAppendBufPlain(flt->buffer, HKEY("|"), 0);
114 RewindHashPos(flt->Filter, flt->p, 0);
115 while (GetNextHashPos(flt->Filter, flt->p, &len, &k, &v)) {
116 eMsgField f = (eMsgField) v;
118 StrBufAppendBufPlain(flt->buffer, HKEY("|"), 0);
119 if (!CM_IsEmpty(msg, f)) {
120 StrBufAppendBufPlain(flt->buffer, CM_KEY(msg, f), 0);
124 StrBufAppendBufPlain(flt->buffer, HKEY("\n"), 0);
125 cputbuf(flt->buffer);
128 // Back end for the MSGS command: output EUID header.
129 void headers_euid(long msgnum, void *userdata) {
130 struct CtdlMessage *msg;
132 msg = CtdlFetchMessage(msgnum, 0);
134 cprintf("%ld||\n", msgnum);
138 cprintf("%ld|%s|%s\n",
140 (!CM_IsEmpty(msg, eExclusiveID) ? msg->cm_fields[eExclusiveID] : ""),
141 (!CM_IsEmpty(msg, eTimestamp) ? msg->cm_fields[eTimestamp] : "0"));
146 // cmd_msgs() - get list of message #'s in this room
147 // implements the MSGS server command using CtdlForEachMessage()
148 void cmd_msgs(char *cmdbuf) {
155 int with_template = 0;
156 struct CtdlMessage *template = NULL;
158 char search_string[1024];
159 ForEachMsgCallback CallBack;
161 if (CtdlAccessCheck(ac_logged_in_or_guest)) return;
163 extract_token(which, cmdbuf, 0, '|', sizeof which);
164 cm_ref = extract_int(cmdbuf, 1);
165 extract_token(search_string, cmdbuf, 1, '|', sizeof search_string);
166 with_template = extract_int(cmdbuf, 2);
167 int output_mode = extract_int(cmdbuf, 3);
168 switch (output_mode) {
171 CallBack = simple_listing;
174 case MSG_HDRS_THREADS:
175 CallBack = headers_listing;
178 CallBack = headers_euid;
180 case MSG_HDRS_BRIEFFILTER:
182 CallBack = headers_brief_filter;
187 if (!strncasecmp(which, "OLD", 3))
189 else if (!strncasecmp(which, "NEW", 3))
191 else if (!strncasecmp(which, "FIRST", 5))
193 else if (!strncasecmp(which, "LAST", 4))
195 else if (!strncasecmp(which, "GT", 2))
197 else if (!strncasecmp(which, "LT", 2))
199 else if (!strncasecmp(which, "SEARCH", 6))
204 if ( (mode == MSGS_SEARCH) && (!CtdlGetConfigInt("c_enable_fulltext")) ) {
205 cprintf("%d Full text index is not enabled on this server.\n",
206 ERROR + CMD_NOT_SUPPORTED);
210 if (with_template == 1) {
213 cprintf("%d Send template then receive message list\n",
215 template = (struct CtdlMessage *)
216 malloc(sizeof(struct CtdlMessage));
217 memset(template, 0, sizeof(struct CtdlMessage));
218 template->cm_magic = CTDLMESSAGE_MAGIC;
219 template->cm_anon_type = MES_NORMAL;
221 while(client_getln(buf, sizeof buf) >= 0 && strcmp(buf,"000")) {
225 tValueLen = extract_token(tfield, buf, 0, '|', sizeof tfield);
226 if ((tValueLen == 4) && GetFieldFromMnemonic(&f, tfield))
228 tValueLen = extract_token(tvalue, buf, 1, '|', sizeof tvalue);
229 if (tValueLen >= 0) {
230 CM_SetField(template, f, tvalue, tValueLen);
236 else if (with_template == 2) {
239 cprintf("%d Send list of headers\n",
241 filt.Filter = NewHash(1, lFlathash);
242 filt.buffer = NewStrBufPlain(NULL, 1024);
243 while(client_getln(buf, sizeof buf) >= 0 && strcmp(buf,"000")) {
246 if (GetFieldFromMnemonic(&f, buf))
248 Put(filt.Filter, LKEY(i), (void*)f, reference_free_handler);
252 filt.p = GetNewHashPos(filt.Filter, 0);
256 cprintf("%d \n", LISTING_FOLLOWS);
259 if (with_template < 2) {
260 CtdlForEachMessage(mode,
261 ( (mode == MSGS_SEARCH) ? 0 : cm_ref ),
262 ( (mode == MSGS_SEARCH) ? search_string : NULL ),
267 if (template != NULL) CM_Free(template);
270 CtdlForEachMessage(mode,
271 ( (mode == MSGS_SEARCH) ? 0 : cm_ref ),
272 ( (mode == MSGS_SEARCH) ? search_string : NULL ),
277 DeleteHashPos(&filt.p);
278 DeleteHash(&filt.Filter);
279 FreeStrBuf(&filt.buffer);
287 * display a message (mode 0 - Citadel proprietary)
289 void cmd_msg0(char *cmdbuf)
292 int headers_only = HEADERS_ALL;
294 msgid = extract_long(cmdbuf, 0);
295 headers_only = extract_int(cmdbuf, 1);
297 CtdlOutputMsg(msgid, MT_CITADEL, headers_only, 1, 0, NULL, 0, NULL, NULL, NULL);
302 // display a message (mode 2 - RFC822)
303 void cmd_msg2(char *cmdbuf) {
305 int headers_only = HEADERS_ALL;
307 msgid = extract_long(cmdbuf, 0);
308 headers_only = extract_int(cmdbuf, 1);
310 CtdlOutputMsg(msgid, MT_RFC822, headers_only, 1, 1, NULL, 0, NULL, NULL, NULL);
314 // Display a message using MIME content types
315 void cmd_msg4(char *cmdbuf) {
319 msgid = extract_long(cmdbuf, 0);
320 extract_token(section, cmdbuf, 1, '|', sizeof section);
321 CtdlOutputMsg(msgid, MT_MIME, 0, 1, 0, (section[0] ? section : NULL) , 0, NULL, NULL, NULL);
325 // Client tells us its preferred message format(s)
326 void cmd_msgp(char *cmdbuf) {
327 if (!strcasecmp(cmdbuf, "dont_decode")) {
328 CC->msg4_dont_decode = 1;
329 cprintf("%d MSG4 will not pre-decode messages.\n", CIT_OK);
332 safestrncpy(CC->preferred_formats, cmdbuf, sizeof(CC->preferred_formats));
333 cprintf("%d Preferred MIME formats have been set.\n", CIT_OK);
338 // Open a component of a MIME message as a download file
339 void cmd_opna(char *cmdbuf) {
341 char desired_section[128];
343 msgid = extract_long(cmdbuf, 0);
344 extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
345 safestrncpy(CC->download_desired_section, desired_section,
346 sizeof CC->download_desired_section);
347 CtdlOutputMsg(msgid, MT_DOWNLOAD, 0, 1, 1, NULL, 0, NULL, NULL, NULL);
351 // Open a component of a MIME message and transmit it all at once
352 void cmd_dlat(char *cmdbuf) {
354 char desired_section[128];
356 msgid = extract_long(cmdbuf, 0);
357 extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
358 safestrncpy(CC->download_desired_section, desired_section, sizeof CC->download_desired_section);
359 CtdlOutputMsg(msgid, MT_SPEW_SECTION, 0, 1, 1, NULL, 0, NULL, NULL, NULL);
363 // message entry - mode 0 (normal)
364 void cmd_ent0(char *entargs) {
369 char supplied_euid[128];
372 char newusername[256];
373 char newuseremail[256];
374 struct CtdlMessage *msg;
378 struct recptypes *valid = NULL;
379 struct recptypes *valid_to = NULL;
380 struct recptypes *valid_cc = NULL;
381 struct recptypes *valid_bcc = NULL;
383 int subject_required = 0;
388 int newuseremail_ok = 0;
389 char references[SIZ];
394 post = extract_int(entargs, 0);
395 extract_token(recp, entargs, 1, '|', sizeof recp);
396 anon_flag = extract_int(entargs, 2);
397 format_type = extract_int(entargs, 3);
398 extract_token(subject, entargs, 4, '|', sizeof subject);
399 extract_token(newusername, entargs, 5, '|', sizeof newusername);
400 do_confirm = extract_int(entargs, 6);
401 extract_token(cc, entargs, 7, '|', sizeof cc);
402 extract_token(bcc, entargs, 8, '|', sizeof bcc);
403 switch(CC->room.QRdefaultview) {
406 extract_token(supplied_euid, entargs, 9, '|', sizeof supplied_euid);
409 supplied_euid[0] = 0;
412 extract_token(newuseremail, entargs, 10, '|', sizeof newuseremail);
413 extract_token(references, entargs, 11, '|', sizeof references);
414 for (ptr=references; *ptr != 0; ++ptr) {
415 if (*ptr == '!') *ptr = '|';
418 /* first check to make sure the request is valid. */
420 err = CtdlDoIHavePermissionToPostInThisRoom(
424 (!IsEmptyStr(references)) // is this a reply? or a top-level post?
427 cprintf("%d %s\n", err, errmsg);
431 /* Check some other permission type things. */
433 if (IsEmptyStr(newusername)) {
434 strcpy(newusername, CC->user.fullname);
436 if ( (CC->user.axlevel < AxAideU)
437 && (strcasecmp(newusername, CC->user.fullname))
438 && (strcasecmp(newusername, CC->cs_inet_fn))
440 cprintf("%d You don't have permission to author messages as '%s'.\n",
441 ERROR + HIGHER_ACCESS_REQUIRED,
447 if (IsEmptyStr(newuseremail)) {
451 if (!IsEmptyStr(newuseremail)) {
452 if (!strcasecmp(newuseremail, CC->cs_inet_email)) {
455 else if (!IsEmptyStr(CC->cs_inet_other_emails)) {
456 j = num_tokens(CC->cs_inet_other_emails, '|');
457 for (i=0; i<j; ++i) {
458 extract_token(buf, CC->cs_inet_other_emails, i, '|', sizeof buf);
459 if (!strcasecmp(newuseremail, buf)) {
466 if (!newuseremail_ok) {
467 cprintf("%d You don't have permission to author messages as '%s'.\n",
468 ERROR + HIGHER_ACCESS_REQUIRED,
474 CC->cs_flags |= CS_POSTING;
476 // In mailbox rooms we have to behave a little differently --
477 // make sure the user has specified at least one recipient. Then
478 // validate the recipient(s). We do this for the Mail> room, as
479 // well as any room which has the "Mailbox" view set - unless it
480 // is the DRAFTS room which does not require recipients.
482 if ( ( ( (CC->room.QRflags & QR_MAILBOX) && (!strcasecmp(&CC->room.QRname[11], MAILROOM)) )
483 || ( (CC->room.QRflags & QR_MAILBOX) && (CC->curr_view == VIEW_MAILBOX) )
484 ) && (strcasecmp(&CC->room.QRname[11], USERDRAFTROOM)) !=0 ) {
485 if (CC->user.axlevel < AxProbU) {
486 strcpy(recp, "sysop");
491 valid_to = validate_recipients(recp, NULL, 0);
492 if (valid_to->num_error > 0) {
493 cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_to->errormsg);
494 free_recipients(valid_to);
498 valid_cc = validate_recipients(cc, NULL, 0);
499 if (valid_cc->num_error > 0) {
500 cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_cc->errormsg);
501 free_recipients(valid_to);
502 free_recipients(valid_cc);
506 valid_bcc = validate_recipients(bcc, NULL, 0);
507 if (valid_bcc->num_error > 0) {
508 cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_bcc->errormsg);
509 free_recipients(valid_to);
510 free_recipients(valid_cc);
511 free_recipients(valid_bcc);
515 // Recipient required, but none were specified
516 if ( (valid_to->num_error < 0) && (valid_cc->num_error < 0) && (valid_bcc->num_error < 0) ) {
517 free_recipients(valid_to);
518 free_recipients(valid_cc);
519 free_recipients(valid_bcc);
520 cprintf("%d At least one recipient is required.\n", ERROR + NO_SUCH_USER);
524 if (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0) {
525 if (CtdlCheckInternetMailPermission(&CC->user)==0) {
526 cprintf("%d You do not have permission "
527 "to send Internet mail.\n",
528 ERROR + HIGHER_ACCESS_REQUIRED);
529 free_recipients(valid_to);
530 free_recipients(valid_cc);
531 free_recipients(valid_bcc);
536 if ( ( (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet) > 0) && (CC->user.axlevel < AxNetU) ) {
537 cprintf("%d Higher access required for network mail.\n", ERROR + HIGHER_ACCESS_REQUIRED);
538 free_recipients(valid_to);
539 free_recipients(valid_cc);
540 free_recipients(valid_bcc);
544 if ((RESTRICT_INTERNET == 1)
545 && (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0)
546 && ((CC->user.flags & US_INTERNET) == 0)
547 && (!CC->internal_pgm)) {
548 cprintf("%d You don't have access to Internet mail.\n",
549 ERROR + HIGHER_ACCESS_REQUIRED);
550 free_recipients(valid_to);
551 free_recipients(valid_cc);
552 free_recipients(valid_bcc);
558 // Is this a room which has anonymous-only or anonymous-option?
559 anonymous = MES_NORMAL;
560 if (CC->room.QRflags & QR_ANONONLY) {
561 anonymous = MES_ANONONLY;
563 if (CC->room.QRflags & QR_ANONOPT) {
564 if (anon_flag == 1) { // only if the user requested it
565 anonymous = MES_ANONOPT;
569 if ((CC->room.QRflags & QR_MAILBOX) == 0) {
573 // Recommend to the client that the use of a message subject is
574 // strongly recommended in this room, if either the SUBJECTREQ flag
575 // is set, or if there is one or more Internet email recipients.
577 if (CC->room.QRflags2 & QR2_SUBJECTREQ) subject_required = 1;
578 if ((valid_to) && (valid_to->num_internet > 0)) subject_required = 1;
579 if ((valid_cc) && (valid_cc->num_internet > 0)) subject_required = 1;
580 if ((valid_bcc) && (valid_bcc->num_internet > 0)) subject_required = 1;
582 // If we're only checking the validity of the request, return success without creating the message.
584 cprintf("%d %s|%d\n", CIT_OK,
585 ((valid_to != NULL) ? valid_to->display_recp : ""),
587 free_recipients(valid_to);
588 free_recipients(valid_cc);
589 free_recipients(valid_bcc);
593 // We don't need these anymore because we'll do it differently below
594 free_recipients(valid_to);
595 free_recipients(valid_cc);
596 free_recipients(valid_bcc);
598 // Read in the message from the client.
600 cprintf("%d send message\n", START_CHAT_MODE);
603 cprintf("%d send message\n", SEND_LISTING);
606 msg = CtdlMakeMessage(&CC->user, recp, cc,
607 CC->room.QRname, anonymous, format_type,
608 newusername, newuseremail, subject,
609 ((!IsEmptyStr(supplied_euid)) ? supplied_euid : NULL),
612 // Put together one big recipients struct containing to/cc/bcc all in one. This is for the envelope.
613 char *all_recps = malloc(SIZ * 3);
614 strcpy(all_recps, recp);
615 if (!IsEmptyStr(cc)) {
616 if (!IsEmptyStr(all_recps)) {
617 strcat(all_recps, ",");
619 strcat(all_recps, cc);
621 if (!IsEmptyStr(bcc)) {
622 if (!IsEmptyStr(all_recps)) {
623 strcat(all_recps, ",");
625 strcat(all_recps, bcc);
627 if (!IsEmptyStr(all_recps)) {
628 valid = validate_recipients(all_recps, NULL, 0);
635 // posting into a mailing list room? set the envelope from
636 // to the actual mail address so others get a valid reply-to-header.
637 if ((valid != NULL) && (valid->num_room == 1) && !IsEmptyStr(valid->recp_orgroom)) {
638 CM_SetField(msg, eenVelopeTo, valid->recp_orgroom, strlen(valid->recp_orgroom));
642 msgnum = CtdlSubmitMsg(msg, valid, "");
644 cprintf("%ld\n", msgnum);
646 if (StrLength(CC->StatusMessage) > 0) {
647 cprintf("%s\n", ChrPtr(CC->StatusMessage));
649 else if (msgnum >= 0L) {
650 client_write(HKEY("Message accepted.\n"));
653 client_write(HKEY("Internal error.\n"));
656 if (!CM_IsEmpty(msg, eExclusiveID)) {
657 cprintf("%s\n", msg->cm_fields[eExclusiveID]);
667 free_recipients(valid);
673 // Delete message from current room
674 void cmd_dele(char *args) {
682 extract_token(msgset, args, 0, '|', sizeof msgset);
683 num_msgs = num_tokens(msgset, ',');
685 cprintf("%d Nothing to do.\n", CIT_OK);
689 if (CtdlDoIHavePermissionToDeleteMessagesFromThisRoom() == 0) {
690 cprintf("%d Higher access required.\n",
691 ERROR + HIGHER_ACCESS_REQUIRED);
695 // Build our message set to be moved/copied
696 msgs = malloc(num_msgs * sizeof(long));
697 for (i=0; i<num_msgs; ++i) {
698 extract_token(msgtok, msgset, i, ',', sizeof msgtok);
699 msgs[i] = atol(msgtok);
702 num_deleted = CtdlDeleteMessages(CC->room.QRname, msgs, num_msgs, "");
706 cprintf("%d %d message%s deleted.\n", CIT_OK,
707 num_deleted, ((num_deleted != 1) ? "s" : ""));
709 cprintf("%d Message not found.\n", ERROR + MESSAGE_NOT_FOUND);
714 // move or copy a message to another room
715 void cmd_move(char *args) {
721 char targ[ROOMNAMELEN];
722 struct ctdlroom qtemp;
729 extract_token(msgset, args, 0, '|', sizeof msgset);
730 num_msgs = num_tokens(msgset, ',');
732 cprintf("%d Nothing to do.\n", CIT_OK);
736 extract_token(targ, args, 1, '|', sizeof targ);
737 convert_room_name_macros(targ, sizeof targ);
738 targ[ROOMNAMELEN - 1] = 0;
739 is_copy = extract_int(args, 2);
741 if (CtdlGetRoom(&qtemp, targ) != 0) {
742 cprintf("%d '%s' does not exist.\n", ERROR + ROOM_NOT_FOUND, targ);
746 if (!strcasecmp(qtemp.QRname, CC->room.QRname)) {
747 cprintf("%d Source and target rooms are the same.\n", ERROR + ALREADY_EXISTS);
751 CtdlGetUser(&CC->user, CC->curr_user);
752 CtdlRoomAccess(&qtemp, &CC->user, &ra, NULL);
754 // Check for permission to perform this operation.
755 // Remember: "CC->room" is source, "qtemp" is target.
758 // Admins can move/copy
759 if (CC->user.axlevel >= AxAideU) permit = 1;
761 // Room aides can move/copy
762 if (CC->user.usernum == CC->room.QRroomaide) permit = 1;
764 // Permit move/copy from personal rooms
765 if ((CC->room.QRflags & QR_MAILBOX)
766 && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
768 // Permit only copy from public to personal room
770 && (!(CC->room.QRflags & QR_MAILBOX))
771 && (qtemp.QRflags & QR_MAILBOX)
776 // Permit message removal from collaborative delete rooms
777 if (CC->room.QRflags2 & QR2_COLLABDEL) permit = 1;
779 // Users allowed to post into the target room may move into it too.
780 if ((CC->room.QRflags & QR_MAILBOX) &&
781 (qtemp.QRflags & UA_POSTALLOWED)) permit = 1;
783 // User must have access to target room
784 if (!(ra & UA_KNOWN)) permit = 0;
787 cprintf("%d Higher access required.\n",
788 ERROR + HIGHER_ACCESS_REQUIRED);
792 // Build our message set to be moved/copied
793 msgs = malloc(num_msgs * sizeof(long));
794 for (i=0; i<num_msgs; ++i) {
795 extract_token(msgtok, msgset, i, ',', sizeof msgtok);
796 msgs[i] = atol(msgtok);
800 err = CtdlSaveMsgPointersInRoom(targ, msgs, num_msgs, 1, NULL, 0);
802 cprintf("%d Cannot store message(s) in %s: error %d\n",
808 // Now delete the message from the source room, if this is a 'move' rather than a 'copy' operation.
810 CtdlDeleteMessages(CC->room.QRname, msgs, num_msgs, "");
814 cprintf("%d Message(s) %s.\n", CIT_OK, (is_copy ? "copied" : "moved") );
818 /*****************************************************************************/
819 /* MODULE INITIALIZATION STUFF */
820 /*****************************************************************************/
821 char *ctdl_module_init_ctdl_message(void) {
823 CtdlRegisterProtoHook(cmd_msgs, "MSGS", "Output a list of messages in the current room");
824 CtdlRegisterProtoHook(cmd_msg0, "MSG0", "Output a message in plain text format");
825 CtdlRegisterProtoHook(cmd_msg2, "MSG2", "Output a message in RFC822 format");
826 CtdlRegisterProtoHook(cmd_msg4, "MSG4", "Output a message in the client's preferred format");
827 CtdlRegisterProtoHook(cmd_msgp, "MSGP", "Select preferred format for MSG4 output");
828 CtdlRegisterProtoHook(cmd_opna, "OPNA", "Open an attachment for download");
829 CtdlRegisterProtoHook(cmd_dlat, "DLAT", "Download an attachment");
830 CtdlRegisterProtoHook(cmd_ent0, "ENT0", "Enter a message");
831 CtdlRegisterProtoHook(cmd_dele, "DELE", "Delete a message");
832 CtdlRegisterProtoHook(cmd_move, "MOVE", "Move or copy a message to another room");
835 /* return our Subversion id for the Log */
836 return "ctdl_message";