citadel
About: Citadel is an advanced messaging and collaboration system for groupware and BBS applications (preferred OS: Linux).
  Fossies Dox: citadel.tar.gz  ("unofficial" and yet experimental doxygen-generated source code documentation)  

serv_instmsg.c
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1/*
2 * This module handles instant messaging between users.
3 *
4 * Copyright (c) 1987-2020 by the citadel.org team
5 *
6 * This program is open source software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 3.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 */
14
15#include "sysdep.h"
16#include <stdlib.h>
17#include <unistd.h>
18#include <stdio.h>
19#include <fcntl.h>
20#include <signal.h>
21#include <pwd.h>
22#include <errno.h>
23#include <sys/types.h>
24#include <time.h>
25#include <sys/wait.h>
26#include <string.h>
27#include <limits.h>
28#include <libcitadel.h>
29#include "citadel.h"
30#include "server.h"
31#include "serv_instmsg.h"
32#include "citserver.h"
33#include "support.h"
34#include "config.h"
35#include "msgbase.h"
36#include "user_ops.h"
37#include "ctdl_module.h"
38
39struct imlog {
40 struct imlog *next;
41 long usernums[2];
42 char usernames[2][128];
43 time_t lastmsg;
45 StrBuf *conversation;
46};
47
48struct imlog *imlist = NULL;
49
50/*
51 * This function handles the logging of instant messages to disk.
52 */
53void log_instant_message(struct CitContext *me, struct CitContext *them, char *msgtext, int serial_number)
54{
55 long usernums[2];
56 long t;
57 struct imlog *iptr = NULL;
58 struct imlog *this_im = NULL;
59
60 memset(usernums, 0, sizeof usernums);
61 usernums[0] = me->user.usernum;
62 usernums[1] = them->user.usernum;
63
64 /* Always put the lower user number first, so we can use the array as a hash value which
65 * represents a pair of users. For a broadcast message one of the users will be 0.
66 */
67 if (usernums[0] > usernums[1]) {
68 t = usernums[0];
69 usernums[0] = usernums[1];
70 usernums[1] = t;
71 }
72
74
75 /* Look for an existing conversation in the hash table.
76 * If not found, create a new one.
77 */
78
79 this_im = NULL;
80 for (iptr = imlist; iptr != NULL; iptr = iptr->next) {
81 if ((iptr->usernums[0] == usernums[0]) && (iptr->usernums[1] == usernums[1])) {
82 /* Existing conversation */
83 this_im = iptr;
84 }
85 }
86 if (this_im == NULL) {
87 /* New conversation */
88 this_im = malloc(sizeof(struct imlog));
89 memset(this_im, 0, sizeof (struct imlog));
90 this_im->usernums[0] = usernums[0];
91 this_im->usernums[1] = usernums[1];
92 /* usernames[] and usernums[] might not be in the same order. This is not an error. */
93 if (me) {
94 safestrncpy(this_im->usernames[0], me->user.fullname, sizeof this_im->usernames[0]);
95 }
96 if (them) {
97 safestrncpy(this_im->usernames[1], them->user.fullname, sizeof this_im->usernames[1]);
98 }
99 this_im->conversation = NewStrBuf();
100 this_im->next = imlist;
101 imlist = this_im;
102 StrBufAppendBufPlain(this_im->conversation, HKEY("<html><body>\r\n"), 0);
103 }
104
105 /* Since it's possible for this function to get called more than once if a user is logged
106 * in on multiple sessions, we use the message's serial number to keep track of whether
107 * we've already logged it.
108 */
109 if (this_im->last_serial != serial_number)
110 {
111 this_im->lastmsg = time(NULL); /* Touch the timestamp so we know when to flush */
112 this_im->last_serial = serial_number;
113 StrBufAppendBufPlain(this_im->conversation, HKEY("<p><b>"), 0);
114 StrBufAppendBufPlain(this_im->conversation, me->user.fullname, -1, 0);
115 StrBufAppendBufPlain(this_im->conversation, HKEY(":</b> "), 0);
116 StrEscAppend(this_im->conversation, NULL, msgtext, 0, 0);
117 StrBufAppendBufPlain(this_im->conversation, HKEY("</p>\r\n"), 0);
118 }
120}
121
122
123/*
124 * Delete any remaining instant messages
125 */
127 struct ExpressMessage *ptr;
128
130 while (CC->FirstExpressMessage != NULL) {
131 ptr = CC->FirstExpressMessage->next;
132 if (CC->FirstExpressMessage->text != NULL)
133 free(CC->FirstExpressMessage->text);
134 free(CC->FirstExpressMessage);
135 CC->FirstExpressMessage = ptr;
136 }
138}
139
140
141/*
142 * Retrieve instant messages
143 */
144void cmd_gexp(char *argbuf) {
145 struct ExpressMessage *ptr;
146
147 if (CC->FirstExpressMessage == NULL) {
148 cprintf("%d No instant messages waiting.\n", ERROR + MESSAGE_NOT_FOUND);
149 return;
150 }
151
153 ptr = CC->FirstExpressMessage;
154 CC->FirstExpressMessage = CC->FirstExpressMessage->next;
156
157 cprintf("%d %d|%ld|%d|%s|%s|%s\n",
159 ((ptr->next != NULL) ? 1 : 0), /* more msgs? */
160 (long)ptr->timestamp, /* time sent */
161 ptr->flags, /* flags */
162 ptr->sender, /* sender of msg */
163 CtdlGetConfigStr("c_nodename"), /* static for now (and possibly deprecated) */
164 ptr->sender_email /* email or jid of sender */
165 );
166
167 if (ptr->text != NULL) {
168 memfmout(ptr->text, "\n");
169 free(ptr->text);
170 }
171
172 cprintf("000\n");
173 free(ptr);
174}
175
176
177/*
178 * Asynchronously deliver instant messages
179 */
180void cmd_gexp_async(void) {
181
182 /* Only do this if the session can handle asynchronous protocol */
183 if (CC->is_async == 0) return;
184
185 /* And don't do it if there's nothing to send. */
186 if (CC->FirstExpressMessage == NULL) return;
187
188 cprintf("%d instant msg\n", ASYNC_MSG + ASYNC_GEXP);
189}
190
191
192/*
193 * Back end support function for send_instant_message() and company
194 */
195void add_xmsg_to_context(struct CitContext *ccptr, struct ExpressMessage *newmsg)
196{
197 struct ExpressMessage *findend;
198
199 if (ccptr->FirstExpressMessage == NULL) {
200 ccptr->FirstExpressMessage = newmsg;
201 }
202 else {
203 findend = ccptr->FirstExpressMessage;
204 while (findend->next != NULL) {
205 findend = findend->next;
206 }
207 findend->next = newmsg;
208 }
209
210 /* If the target context is a session which can handle asynchronous
211 * messages, go ahead and set the flag for that.
212 */
213 set_async_waiting(ccptr);
214}
215
216
217/*
218 * This is the back end to the instant message sending function.
219 * Returns the number of users to which the message was sent.
220 * Sending a zero-length message tests for recipients without sending messages.
221 */
222int send_instant_message(char *lun, char *lem, char *x_user, char *x_msg)
223{
224 int message_sent = 0; /* number of successful sends */
225 struct CitContext *ccptr;
226 struct ExpressMessage *newmsg = NULL;
227 int do_send = 0; /* 1 = send message; 0 = only check for valid recipient */
228 static int serial_number = 0; /* this keeps messages from getting logged twice */
229
230 if (!IsEmptyStr(x_msg)) {
231 do_send = 1;
232 }
233
234 /* find the target user's context and append the message */
236 ++serial_number;
237 for (ccptr = ContextList; ccptr != NULL; ccptr = ccptr->next) {
238
239 if ( ((!strcasecmp(ccptr->user.fullname, x_user))
240 || (!strcasecmp(x_user, "broadcast")))
241 && (ccptr->can_receive_im)
242 && ((ccptr->disable_exp == 0)
243 || (CC->user.axlevel >= AxAideU)) ) {
244 if (do_send) {
245 newmsg = (struct ExpressMessage *) malloc(sizeof (struct ExpressMessage));
246 memset(newmsg, 0, sizeof (struct ExpressMessage));
247 time(&(newmsg->timestamp));
248 safestrncpy(newmsg->sender, lun, sizeof newmsg->sender);
249 safestrncpy(newmsg->sender_email, lem, sizeof newmsg->sender_email);
250 if (!strcasecmp(x_user, "broadcast")) {
251 newmsg->flags |= EM_BROADCAST;
252 }
253 newmsg->text = strdup(x_msg);
254
255 add_xmsg_to_context(ccptr, newmsg);
256
257 /* and log it ... */
258 if (ccptr != CC) {
259 log_instant_message(CC, ccptr, newmsg->text, serial_number);
260 }
261 }
262 ++message_sent;
263 }
264 }
266 return (message_sent);
267}
268
269
270/*
271 * send instant messages
272 */
273void cmd_sexp(char *argbuf)
274{
275 int message_sent = 0;
276 char x_user[USERNAME_SIZE];
277 char x_msg[1024];
278 char *lem;
279 char *x_big_msgbuf = NULL;
280
281 if ((!(CC->logged_in)) && (!(CC->internal_pgm))) {
282 cprintf("%d Not logged in.\n", ERROR + NOT_LOGGED_IN);
283 return;
284 }
285
286 lem = CC->cs_principal_id;
287
288 extract_token(x_user, argbuf, 0, '|', sizeof x_user);
289 extract_token(x_msg, argbuf, 1, '|', sizeof x_msg);
290
291 if (!x_user[0]) {
292 cprintf("%d You were not previously paged.\n", ERROR + NO_SUCH_USER);
293 return;
294 }
295 if ((!strcasecmp(x_user, "broadcast")) && (CC->user.axlevel < AxAideU)) {
296 cprintf("%d Higher access required to send a broadcast.\n",
298 return;
299 }
300 /* This loop handles text-transfer pages */
301 if (!strcmp(x_msg, "-")) {
302 message_sent = PerformXmsgHooks(CC->user.fullname, lem, x_user, "");
303 if (message_sent == 0) {
304 if (CtdlGetUser(NULL, x_user))
305 cprintf("%d '%s' does not exist.\n",
306 ERROR + NO_SUCH_USER, x_user);
307 else
308 cprintf("%d '%s' is not logged in "
309 "or is not accepting pages.\n",
310 ERROR + RESOURCE_NOT_OPEN, x_user);
311 return;
312 }
314 cprintf("%d Transmit message (will deliver to %d users)\n",
315 SEND_LISTING, message_sent);
316 x_big_msgbuf = malloc(SIZ);
317 memset(x_big_msgbuf, 0, SIZ);
318 while (client_getln(x_msg, sizeof x_msg) >= 0 && strcmp(x_msg, "000")) {
319 x_big_msgbuf = realloc(x_big_msgbuf,
320 strlen(x_big_msgbuf) + strlen(x_msg) + 4);
321 if (!IsEmptyStr(x_big_msgbuf))
322 if (x_big_msgbuf[strlen(x_big_msgbuf)] != '\n')
323 strcat(x_big_msgbuf, "\n");
324 strcat(x_big_msgbuf, x_msg);
325 }
326 PerformXmsgHooks(CC->user.fullname, lem, x_user, x_big_msgbuf);
327 free(x_big_msgbuf);
328
329 /* This loop handles inline pages */
330 } else {
331 message_sent = PerformXmsgHooks(CC->user.fullname, lem, x_user, x_msg);
332
333 if (message_sent > 0) {
334 if (!IsEmptyStr(x_msg)) {
335 cprintf("%d Message sent", CIT_OK);
336 }
337 else {
338 cprintf("%d Ok to send message", CIT_OK);
339 }
340 if (message_sent > 1) {
341 cprintf(" to %d users", message_sent);
342 }
343 cprintf(".\n");
344 } else {
345 if (CtdlGetUser(NULL, x_user)) {
346 cprintf("%d '%s' does not exist.\n", ERROR + NO_SUCH_USER, x_user);
347 }
348 else {
349 cprintf("%d '%s' is not logged in or is not accepting instant messages.\n",
350 ERROR + RESOURCE_NOT_OPEN, x_user);
351 }
352 }
353
354
355 }
356}
357
358
359/*
360 * Enter or exit paging-disabled mode
361 */
362void cmd_dexp(char *argbuf)
363{
364 int new_state;
365
366 if (CtdlAccessCheck(ac_logged_in)) return;
367
368 new_state = extract_int(argbuf, 0);
369 if ((new_state == 0) || (new_state == 1)) {
370 CC->disable_exp = new_state;
371 }
372
373 cprintf("%d %d\n", CIT_OK, CC->disable_exp);
374}
375
376
377/*
378 * Request client termination
379 */
380void cmd_reqt(char *argbuf) {
381 struct CitContext *ccptr;
382 int sessions = 0;
383 int which_session;
384 struct ExpressMessage *newmsg;
385
386 if (CtdlAccessCheck(ac_aide)) return;
387 which_session = extract_int(argbuf, 0);
388
390 for (ccptr = ContextList; ccptr != NULL; ccptr = ccptr->next) {
391 if ((ccptr->cs_pid == which_session) || (which_session == 0)) {
392
393 newmsg = (struct ExpressMessage *)
394 malloc(sizeof (struct ExpressMessage));
395 memset(newmsg, 0,
396 sizeof (struct ExpressMessage));
397 time(&(newmsg->timestamp));
398 safestrncpy(newmsg->sender, CC->user.fullname,
399 sizeof newmsg->sender);
400 newmsg->flags |= EM_GO_AWAY;
401 newmsg->text = strdup("Automatic logoff requested.");
402
403 add_xmsg_to_context(ccptr, newmsg);
404 ++sessions;
405
406 }
407 }
409 cprintf("%d Sent termination request to %d sessions.\n", CIT_OK, sessions);
410}
411
412
413/*
414 * This is the back end for flush_conversations_to_disk()
415 * At this point we've isolated a single conversation (struct imlog)
416 * and are ready to write it to disk.
417 */
419 struct CtdlMessage *msg;
420 long msgnum = 0;
421 char roomname[ROOMNAMELEN];
422 StrBuf *MsgBuf, *FullMsgBuf;
423
424 StrBufAppendBufPlain(im->conversation, HKEY(
425 "</body>\r\n"
426 "</html>\r\n"
427 ), 0
428 );
429
430 MsgBuf = StrBufRFC2047encodeMessage(im->conversation);
431 FlushStrBuf(im->conversation);
432 FullMsgBuf = NewStrBufPlain(NULL, StrLength(im->conversation) + 100);
433
434 StrBufAppendBufPlain(FullMsgBuf, HKEY(
435 "Content-type: text/html; charset=UTF-8\r\n"
436 "Content-Transfer-Encoding: quoted-printable\r\n"
437 "\r\n"
438 ), 0
439 );
440 StrBufAppendBuf (FullMsgBuf, MsgBuf, 0);
441 FreeStrBuf(&MsgBuf);
442
443 msg = malloc(sizeof(struct CtdlMessage));
444 memset(msg, 0, sizeof(struct CtdlMessage));
448 if (!IsEmptyStr(im->usernames[0])) {
449 CM_SetField(msg, eAuthor, im->usernames[0], strlen(im->usernames[0]));
450 } else {
451 CM_SetField(msg, eAuthor, HKEY("Citadel"));
452 }
453 if (!IsEmptyStr(im->usernames[1])) {
454 CM_SetField(msg, eRecipient, im->usernames[1], strlen(im->usernames[1]));
455 }
456
458 CM_SetAsFieldSB(msg, eMesageText, &FullMsgBuf); /* we own this memory now */
459
460 /* Start with usernums[1] because it's guaranteed to be higher than usernums[0],
461 * so if there's only one party, usernums[0] will be zero but usernums[1] won't.
462 * Create the room if necessary. Note that we create as a type 5 room rather
463 * than 4, which indicates that it's a personal room but we've already supplied
464 * the namespace prefix.
465 *
466 * In the unlikely event that usernums[1] is zero, a room with an invalid namespace
467 * prefix will be created. That's ok because the auto-purger will clean it up later.
468 */
469 snprintf(roomname, sizeof roomname, "%010ld.%s", im->usernums[1], PAGELOGROOM);
470 CtdlCreateRoom(roomname, 5, "", 0, 1, 1, VIEW_BBS);
471 msgnum = CtdlSubmitMsg(msg, NULL, roomname);
472 CM_Free(msg);
473
474 /* If there is a valid user number in usernums[0], save a copy for them too. */
475 if (im->usernums[0] > 0) {
476 snprintf(roomname, sizeof roomname, "%010ld.%s", im->usernums[0], PAGELOGROOM);
477 CtdlCreateRoom(roomname, 5, "", 0, 1, 1, VIEW_BBS);
478 CtdlSaveMsgPointerInRoom(roomname, msgnum, 0, NULL);
479 }
480
481 /* Finally, if we're logging instant messages globally, do that now. */
482 if (!IsEmptyStr(CtdlGetConfigStr("c_logpages"))) {
483 CtdlCreateRoom(CtdlGetConfigStr("c_logpages"), 3, "", 0, 1, 1, VIEW_BBS);
484 CtdlSaveMsgPointerInRoom(CtdlGetConfigStr("c_logpages"), msgnum, 0, NULL);
485 }
486
487}
488
489/*
490 * Locate instant message conversations which have gone idle
491 * (or, if the server is shutting down, locate *all* conversations)
492 * and flush them to disk (in the participants' log rooms, etc.)
493 */
494void flush_conversations_to_disk(time_t if_older_than) {
495
496 struct imlog *flush_these = NULL;
497 struct imlog *dont_flush_these = NULL;
498 struct imlog *imptr = NULL;
499 struct CitContext *nptr;
500 int nContexts, i;
501
502 nptr = CtdlGetContextArray(&nContexts) ; /* Make a copy of the current wholist */
503
505 while (imlist)
506 {
507 imptr = imlist;
508 imlist = imlist->next;
509
510 /* For a two party conversation, if one party has logged out, force flush. */
511 if (nptr) {
512 int user0_is_still_online = 0;
513 int user1_is_still_online = 0;
514 for (i=0; i<nContexts; i++) {
515 if (nptr[i].user.usernum == imptr->usernums[0]) ++user0_is_still_online;
516 if (nptr[i].user.usernum == imptr->usernums[1]) ++user1_is_still_online;
517 }
518 if (imptr->usernums[0] != imptr->usernums[1]) { /* two party conversation */
519 if ((!user0_is_still_online) || (!user1_is_still_online)) {
520 imptr->lastmsg = 0L; /* force flush */
521 }
522 }
523 else { /* one party conversation (yes, people do IM themselves) */
524 if (!user0_is_still_online) {
525 imptr->lastmsg = 0L; /* force flush */
526 }
527 }
528 }
529
530 /* Now test this conversation to see if it qualifies for flushing. */
531 if ((time(NULL) - imptr->lastmsg) > if_older_than)
532 {
533 /* This conversation qualifies. Move it to the list of ones to flush. */
534 imptr->next = flush_these;
535 flush_these = imptr;
536 }
537 else {
538 /* Move it to the list of ones not to flush. */
539 imptr->next = dont_flush_these;
540 dont_flush_these = imptr;
541 }
542 }
543 imlist = dont_flush_these;
545 free(nptr);
546
547 /* We are now outside of the critical section, and we are the only thread holding a
548 * pointer to a linked list of conversations to be flushed to disk.
549 */
550 while (flush_these) {
551
552 flush_individual_conversation(flush_these); /* This will free the string buffer */
553 imptr = flush_these;
554 flush_these = flush_these->next;
555 free(imptr);
556 }
557}
558
559
560
561void instmsg_timer(void) {
562 flush_conversations_to_disk(300); /* Anything that hasn't peeped in more than 5 minutes */
563}
564
566 flush_conversations_to_disk(0); /* Get it ALL onto disk NOW. */
567}
568
570{
571 if (!threading)
572 {
573 CtdlRegisterProtoHook(cmd_gexp, "GEXP", "Get instant messages");
574 CtdlRegisterProtoHook(cmd_sexp, "SEXP", "Send an instant message");
575 CtdlRegisterProtoHook(cmd_dexp, "DEXP", "Disable instant messages");
576 CtdlRegisterProtoHook(cmd_reqt, "REQT", "Request client termination");
582 }
583
584 /* return our module name for the log */
585 return "instmsg";
586}
#define ROOMNAMELEN
Definition: citadel.h:56
#define MES_NORMAL
Definition: citadel.h:135
#define USERNAME_SIZE
Definition: citadel.h:57
char * CtdlGetConfigStr(char *key)
Definition: config.c:384
CitContext * ContextList
Definition: context.c:22
void set_async_waiting(struct CitContext *ccptr)
Definition: context.c:704
CitContext * CtdlGetContextArray(int *count)
Definition: context.c:445
#define CC
Definition: context.h:140
int CtdlAccessCheck(int)
Definition: user_ops.c:387
#define PRIO_SHUTDOWN
Definition: ctdl_module.h:91
void CtdlRegisterSessionHook(void(*fcn_ptr)(void), int EventType, int Priority)
#define PRIO_ASYNC
Definition: ctdl_module.h:89
#define PRIO_CLEANUP
Definition: ctdl_module.h:75
@ ac_aide
Definition: ctdl_module.h:246
@ ac_logged_in
Definition: ctdl_module.h:244
unsigned CtdlCreateRoom(char *new_room_name, int new_room_type, char *new_room_pass, int new_room_floor, int really_create, int avoid_access, int new_room_view)
Definition: room_ops.c:1136
void CtdlRegisterXmsgHook(int(*fcn_ptr)(char *, char *, char *, char *), int order)
int CtdlGetUser(struct ctdluser *usbuf, char *name)
Definition: user_ops.c:75
void CtdlRegisterProtoHook(void(*handler)(char *), char *cmd, char *desc)
#define PRIO_STOP
Definition: ctdl_module.h:87
#define CTDL_MODULE_INIT(module_name)
Definition: ctdl_module.h:50
#define ASYNC_GEXP
Definition: ipcdef.h:37
#define CIT_OK
Definition: ipcdef.h:6
#define LISTING_FOLLOWS
Definition: ipcdef.h:5
#define HIGHER_ACCESS_REQUIRED
Definition: ipcdef.h:23
#define ASYNC_MSG
Definition: ipcdef.h:36
#define NOT_LOGGED_IN
Definition: ipcdef.h:17
#define ERROR
Definition: ipcdef.h:9
#define SEND_LISTING
Definition: ipcdef.h:8
#define MESSAGE_NOT_FOUND
Definition: ipcdef.h:34
#define NO_SUCH_USER
Definition: ipcdef.h:29
#define RESOURCE_NOT_OPEN
Definition: ipcdef.h:26
void CM_Free(struct CtdlMessage *msg)
Definition: msgbase.c:310
int CtdlSaveMsgPointerInRoom(char *roomname, long msgid, int do_repl_check, struct CtdlMessage *supplied_msg)
Definition: msgbase.c:2399
long CtdlSubmitMsg(struct CtdlMessage *msg, struct recptypes *recps, const char *force)
Definition: msgbase.c:2603
void CM_SetField(struct CtdlMessage *Msg, eMsgField which, const char *buf, long length)
Definition: msgbase.c:142
void memfmout(char *mptr, const char *nl)
Definition: msgbase.c:861
void CM_SetAsFieldSB(struct CtdlMessage *Msg, eMsgField which, StrBuf **buf)
Definition: msgbase.c:258
void * malloc(size_t)
void free(void *)
int PerformXmsgHooks(char *sender, char *sender_email, char *recp, char *msg)
int send_instant_message(char *lun, char *lem, char *x_user, char *x_msg)
Definition: serv_instmsg.c:222
void add_xmsg_to_context(struct CitContext *ccptr, struct ExpressMessage *newmsg)
Definition: serv_instmsg.c:195
void cmd_gexp_async(void)
Definition: serv_instmsg.c:180
void flush_individual_conversation(struct imlog *im)
Definition: serv_instmsg.c:418
void cmd_dexp(char *argbuf)
Definition: serv_instmsg.c:362
void cmd_sexp(char *argbuf)
Definition: serv_instmsg.c:273
void log_instant_message(struct CitContext *me, struct CitContext *them, char *msgtext, int serial_number)
Definition: serv_instmsg.c:53
void cmd_gexp(char *argbuf)
Definition: serv_instmsg.c:144
void cmd_reqt(char *argbuf)
Definition: serv_instmsg.c:380
void delete_instant_messages(void)
Definition: serv_instmsg.c:126
void instmsg_timer(void)
Definition: serv_instmsg.c:561
void instmsg_shutdown(void)
Definition: serv_instmsg.c:565
void flush_conversations_to_disk(time_t if_older_than)
Definition: serv_instmsg.c:494
struct imlog * imlist
Definition: serv_instmsg.c:48
#define EVT_STOP
Definition: server.h:212
#define CTDLMESSAGE_MAGIC
Definition: server.h:42
@ eMesageText
Definition: server.h:315
@ eAuthor
Definition: server.h:307
@ eRecipient
Definition: server.h:318
@ eOriginalRoom
Definition: server.h:316
#define FMT_RFC822
Definition: server.h:178
@ XMSG_PRI_LOCAL
Definition: server.h:237
#define EM_BROADCAST
Definition: server.h:127
#define EVT_ASYNC
Definition: server.h:220
#define EVT_TIMER
Definition: server.h:224
#define EM_GO_AWAY
Definition: server.h:128
@ S_IM_LOGS
Definition: server.h:157
@ S_SESSION_TABLE
Definition: server.h:137
#define EVT_SHUTDOWN
Definition: server.h:226
int snprintf(char *buf, size_t max, const char *fmt,...)
Definition: snprintf.c:69
int cs_pid
Definition: context.h:44
struct ctdluser user
Definition: context.h:109
CitContext * next
Definition: context.h:42
int can_receive_im
Definition: context.h:81
struct ExpressMessage * FirstExpressMessage
Definition: context.h:113
int disable_exp
Definition: context.h:114
int cm_magic
Definition: server.h:34
char cm_anon_type
Definition: server.h:35
char cm_format_type
Definition: server.h:36
unsigned flags
Definition: server.h:121
char sender_email[256]
Definition: server.h:123
struct ExpressMessage * next
Definition: server.h:119
char * text
Definition: server.h:124
time_t timestamp
Definition: server.h:120
char sender[256]
Definition: server.h:122
char fullname[64]
Definition: citadel.h:90
long usernum
Definition: citadel.h:87
StrBuf * conversation
Definition: serv_instmsg.c:45
char usernames[2][128]
Definition: serv_instmsg.c:42
struct imlog * next
Definition: serv_instmsg.c:40
long usernums[2]
Definition: serv_instmsg.c:41
int last_serial
Definition: serv_instmsg.c:44
time_t lastmsg
Definition: serv_instmsg.c:43
#define PAGELOGROOM
Definition: sysconfig.h:71
#define SIZ
Definition: sysconfig.h:33
void cprintf(const char *format,...)
Definition: sysdep.c:381
int client_getln(char *buf, int bufsize)
Definition: sysdep.c:548
void unbuffer_output(void)
Definition: sysdep.c:276
void begin_critical_section(int which_one)
Definition: threads.c:67
void end_critical_section(int which_one)
Definition: threads.c:85