citadel/serv_chat.c

   1 /*
   2  * $Id$
   3  *
   4  * This module handles all "real time" communication between users.  The
   5  * modes of communication currently supported are Chat and Paging.
   6  *
   7  */
   8 #include "sysdep.h"
   9 #include <stdlib.h>
  10 #include <unistd.h>
  11 #include <stdio.h>
  12 #include <fcntl.h>
  13 #include <signal.h>
  14 #include <pwd.h>
  15 #include <errno.h>
  16 #include <sys/types.h>
  17 #include <sys/time.h>
  18 #include <sys/wait.h>
  19 #include <string.h>
  20 #include <limits.h>
  21 #include "citadel.h"
  22 #include "server.h"
  23 #include <syslog.h>
  24 #include "serv_chat.h"
  25 #include "sysdep_decls.h"
  26 #include "citserver.h"
  27 #include "support.h"
  28 #include "config.h"
  29 #include "dynloader.h"
  30 #include "tools.h"
  31 #include "msgbase.h"
  32 #include "user_ops.h"
  33 #include "room_ops.h"
  34
  35 struct ChatLine *ChatQueue = NULL;
  36 int ChatLastMsg = 0;
  37
  38 extern struct CitContext *ContextList;
  39
  40
  41
  42 void allwrite(char *cmdbuf, int flag, char *username)
  43 {
  44         FILE *fp;
  45         char bcast[256];
  46         char *un;
  47         struct ChatLine *clptr, *clnew;
  48         time_t now;
  49
  50         if (CC->fake_username[0])
  51                 un = CC->fake_username;
  52         else
  53                 un = CC->usersupp.fullname;
  54         if (flag == 1) {
  55                 snprintf(bcast, sizeof bcast, ":|<%s %s>", un, cmdbuf);
  56         } else if (flag == 0) {
  57                 snprintf(bcast, sizeof bcast, "%s|%s", un, cmdbuf);
  58         } else if (flag == 2) {
  59                 snprintf(bcast, sizeof bcast, ":|<%s whispers %s>", un, cmdbuf);
  60         }
  61         if ((strcasecmp(cmdbuf, "NOOP")) && (flag != 2)) {
  62                 fp = fopen(CHATLOG, "a");
  63                 fprintf(fp, "%s\n", bcast);
  64                 fclose(fp);
  65         }
  66         clnew = (struct ChatLine *) mallok(sizeof(struct ChatLine));
  67         memset(clnew, 0, sizeof(struct ChatLine));
  68         if (clnew == NULL) {
  69                 fprintf(stderr, "citserver: cannot alloc chat line: %s\n",
  70                         strerror(errno));
  71                 return;
  72         }
  73         time(&now);
  74         clnew->next = NULL;
  75         clnew->chat_time = now;
  76         safestrncpy(clnew->chat_room, CC->quickroom.QRname,
  77                         sizeof clnew->chat_room);
  78         clnew->chat_room[sizeof clnew->chat_room - 1] = 0;
  79         if (username) {
  80                 safestrncpy(clnew->chat_username, username,
  81                         sizeof clnew->chat_username);
  82                 clnew->chat_username[sizeof clnew->chat_username - 1] = 0;
  83         } else
  84                 clnew->chat_username[0] = '\0';
  85         safestrncpy(clnew->chat_text, bcast, sizeof clnew->chat_text);
  86
  87         /* Here's the critical section.
  88          * First, add the new message to the queue...
  89          */
  90         begin_critical_section(S_CHATQUEUE);
  91         ++ChatLastMsg;
  92         clnew->chat_seq = ChatLastMsg;
  93         if (ChatQueue == NULL) {
  94                 ChatQueue = clnew;
  95         } else {
  96                 for (clptr = ChatQueue; clptr->next != NULL; clptr = clptr->next);;
  97                 clptr->next = clnew;
  98         }
  99
 100         /* Then, before releasing the lock, free the expired messages */
 101         while ((ChatQueue != NULL) && (now - ChatQueue->chat_time >= 120L)) {
 102                 clptr = ChatQueue;
 103                 ChatQueue = ChatQueue->next;
 104                 phree(clptr);
 105         }
 106         end_critical_section(S_CHATQUEUE);
 107 }
 108
 109
 110 t_context *find_context(char **unstr)
 111 {
 112         t_context *t_cc, *found_cc = NULL;
 113         char *name, *tptr;
 114
 115         if ((!*unstr) || (!unstr))
 116                 return (NULL);
 117
 118         begin_critical_section(S_SESSION_TABLE);
 119         for (t_cc = ContextList; ((t_cc) && (!found_cc)); t_cc = t_cc->next) {
 120                 if (t_cc->fake_username[0])
 121                         name = t_cc->fake_username;
 122                 else
 123                         name = t_cc->curr_user;
 124                 tptr = *unstr;
 125                 if ((!strncasecmp(name, tptr, strlen(name))) && (tptr[strlen(name)] == ' ')) {
 126                         found_cc = t_cc;
 127                         *unstr = &(tptr[strlen(name) + 1]);
 128                 }
 129         }
 130         end_critical_section(S_SESSION_TABLE);
 131
 132         return (found_cc);
 133 }
 134
 135 /*
 136  * List users in chat.
 137  * allflag ==   0 = list users in chat
 138  *              1 = list users in chat, followed by users not in chat
 139  *              2 = display count only
 140  */
 141
 142 void do_chat_listing(int allflag)
 143 {
 144         struct CitContext *ccptr;
 145         int count = 0;
 146         int count_elsewhere = 0;
 147         char roomname[ROOMNAMELEN];
 148
 149         if ((allflag == 0) || (allflag == 1))
 150                 cprintf(":|\n:| Users currently in chat:\n");
 151         begin_critical_section(S_SESSION_TABLE);
 152         for (ccptr = ContextList; ccptr != NULL; ccptr = ccptr->next) {
 153                 if (ccptr->cs_flags & CS_CHAT) {
 154                         if (!strcasecmp(ccptr->quickroom.QRname,
 155                            CC->quickroom.QRname)) {
 156                                 ++count;
 157                         }
 158                         else {
 159                                 ++count_elsewhere;
 160                         }
 161                 }
 162
 163                 GenerateRoomDisplay(roomname, ccptr, CC);
 164                 if ((CC->usersupp.axlevel < 6)
 165                    && (strlen(ccptr->fake_roomname)>0)) {
 166                         strcpy(roomname, ccptr->fake_roomname);
 167                 }
 168
 169                 if ((ccptr->cs_flags & CS_CHAT)
 170                     && ((ccptr->cs_flags & CS_STEALTH) == 0)) {
 171                         if ((allflag == 0) || (allflag == 1)) {
 172                                 cprintf(":| %-25s <%s>:\n",
 173                                         (ccptr->fake_username[0]) ? ccptr->fake_username : ccptr->curr_user,
 174                                         roomname);
 175                         }
 176                 }
 177         }
 178
 179         if (allflag == 1) {
 180                 cprintf(":|\n:| Users not in chat:\n");
 181                 for (ccptr = ContextList; ccptr != NULL; ccptr = ccptr->next) {
 182
 183                         if (((ccptr->cs_flags & CS_CHAT) == 0)
 184                             && ((ccptr->cs_flags & CS_STEALTH) == 0)) {
 185                                 cprintf(":| %-25s <%s>:\n",
 186                                         (ccptr->fake_username[0]) ? ccptr->fake_username : ccptr->curr_user,
 187                                         roomname);
 188                         }
 189                 }
 190         }
 191         end_critical_section(S_SESSION_TABLE);
 192
 193         if (allflag == 2) {
 194                 if (count > 1) {
 195                         cprintf(":|There are %d users here.\n", count);
 196                 }
 197                 else {
 198                         cprintf(":|Note: you are the only one here.\n");
 199                 }
 200                 if (count_elsewhere > 0) {
 201                         cprintf(":|There are %d users chatting in other rooms.\n", count_elsewhere);
 202                 }
 203         }
 204
 205         cprintf(":|\n");
 206 }
 207
 208
 209 void cmd_chat(char *argbuf)
 210 {
 211         char cmdbuf[256];
 212         char *un;
 213         char *strptr1;
 214         int MyLastMsg, ThisLastMsg;
 215         struct ChatLine *clptr;
 216         struct CitContext *t_context;
 217         int retval;
 218
 219         if (!(CC->logged_in)) {
 220                 cprintf("%d Not logged in.\n", ERROR + NOT_LOGGED_IN);
 221                 return;
 222         }
 223
 224         CC->cs_flags = CC->cs_flags | CS_CHAT;
 225         cprintf("%d Entering chat mode (type '/help' for available commands)\n",
 226                 START_CHAT_MODE);
 227
 228         MyLastMsg = ChatLastMsg;
 229
 230         if ((CC->cs_flags & CS_STEALTH) == 0) {
 231                 allwrite("<entering chat>", 0, NULL);
 232         }
 233         strcpy(cmdbuf, "");
 234
 235         do_chat_listing(2);
 236
 237         while (1) {
 238                 int ok_cmd;
 239                 int linelen;
 240
 241                 ok_cmd = 0;
 242                 linelen = strlen(cmdbuf);
 243                 if (linelen > 100) --linelen;   /* truncate too-long lines */
 244                 cmdbuf[linelen + 1] = 0;
 245
 246                 retval = client_read_to(&cmdbuf[linelen], 1, 2);
 247
 248                 if (retval < 0) {       /* socket broken? */
 249                         if ((CC->cs_flags & CS_STEALTH) == 0) {
 250                                 allwrite("<disconnected>", 0, NULL);
 251                         }
 252                         return;
 253                 }
 254
 255                 /* if we have a complete line, do send processing */
 256                 if (strlen(cmdbuf) > 0)
 257                         if (cmdbuf[strlen(cmdbuf) - 1] == 10) {
 258                                 cmdbuf[strlen(cmdbuf) - 1] = 0;
 259                                 time(&CC->lastcmd);
 260                                 time(&CC->lastidle);
 261
 262                                 if ((!strcasecmp(cmdbuf, "exit"))
 263                                     || (!strcasecmp(cmdbuf, "/exit"))
 264                                     || (!strcasecmp(cmdbuf, "quit"))
 265                                     || (!strcasecmp(cmdbuf, "logout"))
 266                                     || (!strcasecmp(cmdbuf, "logoff"))
 267                                     || (!strcasecmp(cmdbuf, "/q"))
 268                                     || (!strcasecmp(cmdbuf, ".q"))
 269                                     || (!strcasecmp(cmdbuf, "/quit"))
 270                                     )
 271                                         strcpy(cmdbuf, "000");
 272
 273                                 if (!strcmp(cmdbuf, "000")) {
 274                                         if ((CC->cs_flags & CS_STEALTH) == 0) {
 275                                                 allwrite("<exiting chat>", 0, NULL);
 276                                         }
 277                                         sleep(1);
 278                                         cprintf("000\n");
 279                                         CC->cs_flags = CC->cs_flags - CS_CHAT;
 280                                         return;
 281                                 }
 282                                 if ((!strcasecmp(cmdbuf, "/help"))
 283                                     || (!strcasecmp(cmdbuf, "help"))
 284                                     || (!strcasecmp(cmdbuf, "/?"))
 285                                     || (!strcasecmp(cmdbuf, "?"))) {
 286                                         cprintf(":|\n");
 287                                         cprintf(":|Available commands: \n");
 288                                         cprintf(":|/help   (prints this message) \n");
 289                                         cprintf(":|/who    (list users currently in chat) \n");
 290                                         cprintf(":|/whobbs (list users in chat -and- elsewhere) \n");
 291                                         cprintf(":|/me     ('action' line, ala irc) \n");
 292                                         cprintf(":|/msg    (send private message, ala irc) \n");
 293                                         cprintf(":|/quit   (return to the BBS) \n");
 294                                         cprintf(":|\n");
 295                                         ok_cmd = 1;
 296                                 }
 297                                 if (!strcasecmp(cmdbuf, "/who")) {
 298                                         do_chat_listing(0);
 299                                         ok_cmd = 1;
 300                                 }
 301                                 if (!strcasecmp(cmdbuf, "/whobbs")) {
 302                                         do_chat_listing(1);
 303                                         ok_cmd = 1;
 304                                 }
 305                                 if (!strncasecmp(cmdbuf, "/me ", 4)) {
 306                                         allwrite(&cmdbuf[4], 1, NULL);
 307                                         ok_cmd = 1;
 308                                 }
 309                                 if (!strncasecmp(cmdbuf, "/msg ", 5)) {
 310                                         ok_cmd = 1;
 311                                         strptr1 = &cmdbuf[5];
 312                                         if ((t_context = find_context(&strptr1))) {
 313                                                 allwrite(strptr1, 2, CC->curr_user);
 314                                                 if (strcasecmp(CC->curr_user, t_context->curr_user))
 315                                                         allwrite(strptr1, 2, t_context->curr_user);
 316                                         } else
 317                                                 cprintf(":|User not found.\n", cmdbuf);
 318                                         cprintf("\n");
 319                                 }
 320                                 if ((cmdbuf[0] != '/') && (strlen(cmdbuf) > 0)) {
 321                                         ok_cmd = 1;
 322                                         allwrite(cmdbuf, 0, NULL);
 323                                 }
 324                                 if ((!ok_cmd) && (cmdbuf[0]) && (cmdbuf[0] != '\n'))
 325                                         cprintf(":|Command %s is not understood.\n", cmdbuf);
 326
 327                                 strcpy(cmdbuf, "");
 328
 329                         }
 330                 /* now check the queue for new incoming stuff */
 331
 332                 if (CC->fake_username[0])
 333                         un = CC->fake_username;
 334                 else
 335                         un = CC->curr_user;
 336                 if (ChatLastMsg > MyLastMsg) {
 337                         ThisLastMsg = ChatLastMsg;
 338                         for (clptr = ChatQueue; clptr != NULL; clptr = clptr->next) {
 339                                 if ((clptr->chat_seq > MyLastMsg) && ((!clptr->chat_username[0]) || (!strncasecmp(un, clptr->chat_username, 32)))) {
 340                                         if ((!clptr->chat_room[0]) || (!strncasecmp(CC->quickroom.QRname, clptr->chat_room, ROOMNAMELEN))) {
 341                                                 cprintf("%s\n", clptr->chat_text);
 342                                         }
 343                                 }
 344                         }
 345                         MyLastMsg = ThisLastMsg;
 346                 }
 347         }
 348 }
 349
 350
 351
 352 /*
 353  * Delete any remaining express messages
 354  */
 355 void delete_express_messages(void) {
 356         struct ExpressMessage *ptr;
 357
 358         begin_critical_section(S_SESSION_TABLE);
 359         while (CC->FirstExpressMessage != NULL) {
 360                 ptr = CC->FirstExpressMessage->next;
 361                 if (CC->FirstExpressMessage->text != NULL)
 362                         phree(CC->FirstExpressMessage->text);
 363                 phree(CC->FirstExpressMessage);
 364                 CC->FirstExpressMessage = ptr;
 365                 }
 366         end_critical_section(S_SESSION_TABLE);
 367         }
 368
 369
 370
 371
 372 /*
 373  * Poll for express messages (OLD METHOD -- ***DEPRECATED ***)
 374  */
 375 void cmd_pexp(char *argbuf)
 376 {
 377         struct ExpressMessage *ptr, *holdptr;
 378
 379         if (CC->FirstExpressMessage == NULL) {
 380                 cprintf("%d No express messages waiting.\n", ERROR);
 381                 return;
 382         }
 383         begin_critical_section(S_SESSION_TABLE);
 384         ptr = CC->FirstExpressMessage;
 385         CC->FirstExpressMessage = NULL;
 386         end_critical_section(S_SESSION_TABLE);
 387
 388         cprintf("%d Express msgs:\n", LISTING_FOLLOWS);
 389         while (ptr != NULL) {
 390                 if (ptr->flags && EM_BROADCAST)
 391                         cprintf("Broadcast message ");
 392                 else if (ptr->flags && EM_CHAT)
 393                         cprintf("Chat request ");
 394                 else if (ptr->flags && EM_GO_AWAY)
 395                         cprintf("Please logoff now, as requested ");
 396                 else
 397                         cprintf("Message ");
 398                 cprintf("from %s:\n", ptr->sender);
 399                 if (ptr->text != NULL)
 400                         memfmout(80, ptr->text, 0, "\n");
 401
 402                 holdptr = ptr->next;
 403                 if (ptr->text != NULL) phree(ptr->text);
 404                 phree(ptr);
 405                 ptr = holdptr;
 406         }
 407         cprintf("000\n");
 408 }
 409
 410
 411 /*
 412  * Get express messages (new method)
 413  */
 414 void cmd_gexp(char *argbuf) {
 415         struct ExpressMessage *ptr;
 416
 417         if (CC->FirstExpressMessage == NULL) {
 418                 cprintf("%d No express messages waiting.\n", ERROR);
 419                 return;
 420         }
 421
 422         begin_critical_section(S_SESSION_TABLE);
 423         ptr = CC->FirstExpressMessage;
 424         CC->FirstExpressMessage = CC->FirstExpressMessage->next;
 425         end_critical_section(S_SESSION_TABLE);
 426
 427         cprintf("%d %d|%ld|%d|%s|%s\n",
 428                 LISTING_FOLLOWS,
 429                 ((ptr->next != NULL) ? 1 : 0),          /* more msgs? */
 430                 ptr->timestamp,                         /* time sent */
 431                 ptr->flags,                             /* flags */
 432                 ptr->sender,                            /* sender of msg */
 433                 config.c_nodename);                     /* static for now */
 434         if (ptr->text != NULL) {
 435                 memfmout(80, ptr->text, 0, "\n");
 436                 if (ptr->text[strlen(ptr->text)-1] != '\n') cprintf("\n");
 437                 phree(ptr->text);
 438                 }
 439         cprintf("000\n");
 440         phree(ptr);
 441 }
 442
 443
 444
 445 /*
 446  * This is the back end to the express message sending function.
 447  * Returns the number of users to which the message was sent.
 448  * Sending a zero-length message tests for recipients without sending messages.
 449  */
 450 int send_express_message(char *lun, char *x_user, char *x_msg)
 451 {
 452         int message_sent = 0;           /* number of successful sends */
 453
 454         struct CitContext *ccptr;
 455         struct ExpressMessage *newmsg, *findend;
 456         char *un;
 457         size_t msglen = 0;
 458         int do_send = 0;                /* set to 1 to actually page, not
 459                                          * just check to see if we can.
 460                                          */
 461         struct savelist *sl = NULL;     /* list of rooms to save this page */
 462         struct savelist *sptr;
 463         struct CtdlMessage *logmsg;
 464         char roomname[ROOMNAMELEN];
 465         long msgnum;
 466
 467         if (strlen(x_msg) > 0) {
 468                 msglen = strlen(x_msg) + 4;
 469                 do_send = 1;
 470                 }
 471
 472         /* find the target user's context and append the message */
 473         begin_critical_section(S_SESSION_TABLE);
 474         for (ccptr = ContextList; ccptr != NULL; ccptr = ccptr->next) {
 475
 476                 if (ccptr->fake_username[0])    /* <bc> */
 477                         un = ccptr->fake_username;
 478                 else
 479                         un = ccptr->usersupp.fullname;
 480
 481                 if ( ((!strcasecmp(un, x_user))
 482                     || (!strcasecmp(x_user, "broadcast")))
 483                     && ((ccptr->disable_exp == 0)
 484                     || (CC->usersupp.axlevel >= 6)) ) {
 485                         if (do_send) {
 486                                 newmsg = (struct ExpressMessage *)
 487                                         mallok(sizeof (struct ExpressMessage));
 488                                 memset(newmsg, 0,
 489                                         sizeof (struct ExpressMessage));
 490                                 safestrncpy(newmsg->sender, lun,
 491                                             sizeof newmsg->sender);
 492                                 if (!strcasecmp(x_user, "broadcast"))
 493                                         newmsg->flags |= EM_BROADCAST;
 494                                 newmsg->text = mallok(msglen);
 495                                 safestrncpy(newmsg->text, x_msg, msglen);
 496
 497                                 if (ccptr->FirstExpressMessage == NULL)
 498                                         ccptr->FirstExpressMessage = newmsg;
 499                                 else {
 500                                         findend = ccptr->FirstExpressMessage;
 501                                         while (findend->next != NULL)
 502                                                 findend = findend->next;
 503                                         findend->next = newmsg;
 504                                 }
 505
 506                                 /* and log it ... */
 507                                 if (ccptr != CC) {
 508                                         sptr = (struct savelist *)
 509                                                 malloc(sizeof(struct savelist));
 510                                         sptr->next = sl;
 511                                         MailboxName(sptr->roomname,
 512                                                 &ccptr->usersupp, PAGELOGROOM);
 513                                         sl = sptr;
 514                                 }
 515                         }
 516                         ++message_sent;
 517                 }
 518         }
 519         end_critical_section(S_SESSION_TABLE);
 520
 521         /* Log the page to disk if configured to do so  */
 522         if ( (do_send) && (message_sent) ) {
 523
 524                 logmsg = mallok(sizeof(struct CtdlMessage));
 525                 memset(logmsg, 0, sizeof(struct CtdlMessage));
 526                 logmsg->cm_magic = CTDLMESSAGE_MAGIC;
 527                 logmsg->cm_anon_type = MES_NORMAL;
 528                 logmsg->cm_format_type = 0;
 529                 logmsg->cm_fields['A'] = strdoop(lun);
 530                 logmsg->cm_fields['N'] = strdoop(NODENAME);
 531                 logmsg->cm_fields['O'] = strdoop(PAGELOGROOM);
 532                 logmsg->cm_fields['R'] = strdoop(x_user);
 533                 logmsg->cm_fields['M'] = strdoop(x_msg);
 534
 535                 MailboxName(roomname, &CC->usersupp, PAGELOGROOM);
 536                 create_room(roomname, 4, "", 0);
 537                 msgnum = CtdlSaveMsg(logmsg, "", roomname, MES_LOCAL);
 538                 if (strlen(config.c_logpages) > 0) {
 539                         create_room(config.c_logpages, 3, "", 0);
 540                         CtdlSaveMsgPointerInRoom(config.c_logpages, msgnum, 0);
 541                 }
 542                 while (sl != NULL) {
 543                         create_room(sl->roomname, 4, "", 0);
 544                         CtdlSaveMsgPointerInRoom(sl->roomname, msgnum, 0);
 545                         sptr = sl->next;
 546                         phree(sl);
 547                         sl = sptr;
 548                 }
 549
 550                 CtdlFreeMessage(logmsg);
 551         }
 552
 553         return (message_sent);
 554 }
 555
 556 /*
 557  * send express messages  <bc>
 558  */
 559 void cmd_sexp(char *argbuf)
 560 {
 561         int message_sent = 0;
 562         char x_user[256];
 563         char x_msg[256];
 564         char *lun;              /* <bc> */
 565         char *x_big_msgbuf = NULL;
 566
 567         if ((!(CC->logged_in)) && (!(CC->internal_pgm))) {
 568                 cprintf("%d Not logged in.\n", ERROR + NOT_LOGGED_IN);
 569                 return;
 570         }
 571         if (CC->fake_username[0])
 572                 lun = CC->fake_username;
 573         else
 574                 lun = CC->usersupp.fullname;
 575
 576         extract(x_user, argbuf, 0);
 577
 578         extract(x_msg, argbuf, 1);
 579
 580         if (!x_user[0]) {
 581                 cprintf("%d You were not previously paged.\n", ERROR);
 582                 return;
 583         }
 584         if ((!strcasecmp(x_user, "broadcast")) && (CC->usersupp.axlevel < 6)) {
 585                 cprintf("%d Higher access required to send a broadcast.\n",
 586                         ERROR + HIGHER_ACCESS_REQUIRED);
 587                 return;
 588         }
 589         /* This loop handles text-transfer pages */
 590         if (!strcmp(x_msg, "-")) {
 591                 message_sent = PerformXmsgHooks(lun, x_user, "");
 592                 if (message_sent == 0) {
 593                         cprintf("%d '%s' is not logged in "
 594                                 "or is not accepting pages.\n",
 595                                 ERROR, x_user);
 596                         return;
 597                 }
 598                 cprintf("%d Transmit message (will deliver to %d users)\n",
 599                         SEND_LISTING, message_sent);
 600                 x_big_msgbuf = mallok(256);
 601                 memset(x_big_msgbuf, 0, 256);
 602                 while (client_gets(x_msg), strcmp(x_msg, "000")) {
 603                         x_big_msgbuf = reallok(x_big_msgbuf,
 604                                strlen(x_big_msgbuf) + strlen(x_msg) + 4);
 605                         if (strlen(x_big_msgbuf) > 0)
 606                            if (x_big_msgbuf[strlen(x_big_msgbuf)] != '\n')
 607                                 strcat(x_big_msgbuf, "\n");
 608                         strcat(x_big_msgbuf, x_msg);
 609                 }
 610                 PerformXmsgHooks(lun, x_user, x_big_msgbuf);
 611                 phree(x_big_msgbuf);
 612
 613                 /* This loop handles inline pages */
 614         } else {
 615                 message_sent = PerformXmsgHooks(lun, x_user, x_msg);
 616
 617                 if (message_sent > 0) {
 618                         if (strlen(x_msg) > 0)
 619                                 cprintf("%d Message sent", OK);
 620                         else
 621                                 cprintf("%d Ok to send message", OK);
 622                         if (message_sent > 1)
 623                                 cprintf(" to %d users", message_sent);
 624                         cprintf(".\n");
 625                 } else {
 626                         cprintf("%d '%s' is not logged in "
 627                                 "or is not accepting pages.\n",
 628                                 ERROR, x_user);
 629                 }
 630
 631
 632         }
 633 }
 634
 635
 636
 637 /*
 638  * Enter or exit paging-disabled mode
 639  */
 640 void cmd_dexp(char *argbuf)
 641 {
 642         int new_state;
 643
 644         if (!CC->logged_in) {
 645                 cprintf("%d Not logged in.\n",ERROR+NOT_LOGGED_IN);
 646                 return;
 647                 }
 648
 649         new_state = extract_int(argbuf, 0);
 650         if ((new_state == 0) || (new_state == 1)) {
 651                 CC->disable_exp = new_state;
 652                 }
 653         cprintf("%d %d\n", OK, CC->disable_exp);
 654         }
 655
 656
 657
 658
 659
 660 char *Dynamic_Module_Init(void)
 661 {
 662         CtdlRegisterProtoHook(cmd_chat, "CHAT", "Begin real-time chat");
 663         CtdlRegisterProtoHook(cmd_pexp, "PEXP", "Poll for express messages");
 664         CtdlRegisterProtoHook(cmd_gexp, "GEXP", "Get express messages");
 665         CtdlRegisterProtoHook(cmd_sexp, "SEXP", "Send an express message");
 666         CtdlRegisterProtoHook(cmd_dexp, "DEXP", "Disable express messages");
 667         CtdlRegisterSessionHook(delete_express_messages, EVT_STOP);
 668         CtdlRegisterXmsgHook(send_express_message, XMSG_PRI_LOCAL);
 669         return "$Id$";
 670 }
 671