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 (1) {
 102                 if (ChatQueue == NULL)
 103                         goto DONE_FREEING;
 104                 if ((now - ChatQueue->chat_time) < 120L)
 105                         goto DONE_FREEING;
 106                 clptr = ChatQueue;
 107                 ChatQueue = ChatQueue->next;
 108                 phree(clptr);
 109         }
 110 DONE_FREEING:
 111         end_critical_section(S_CHATQUEUE);
 112 }
 113
 114
 115 t_context *find_context(char **unstr)
 116 {
 117         t_context *t_cc, *found_cc = NULL;
 118         char *name, *tptr;
 119
 120         if ((!*unstr) || (!unstr))
 121                 return (NULL);
 122
 123         begin_critical_section(S_SESSION_TABLE);
 124         for (t_cc = ContextList; ((t_cc) && (!found_cc)); t_cc = t_cc->next) {
 125                 if (t_cc->fake_username[0])
 126                         name = t_cc->fake_username;
 127                 else
 128                         name = t_cc->curr_user;
 129                 tptr = *unstr;
 130                 if ((!strncasecmp(name, tptr, strlen(name))) && (tptr[strlen(name)] == ' ')) {
 131                         found_cc = t_cc;
 132                         *unstr = &(tptr[strlen(name) + 1]);
 133                 }
 134         }
 135         end_critical_section(S_SESSION_TABLE);
 136
 137         return (found_cc);
 138 }
 139
 140 /*
 141  * List users in chat.
 142  * allflag ==   0 = list users in chat
 143  *              1 = list users in chat, followed by users not in chat
 144  *              2 = display count only
 145  */
 146
 147 void do_chat_listing(int allflag)
 148 {
 149         struct CitContext *ccptr;
 150         int count = 0;
 151         int count_elsewhere = 0;
 152         char roomname[ROOMNAMELEN];
 153
 154         if ((allflag == 0) || (allflag == 1))
 155                 cprintf(":|\n:| Users currently in chat:\n");
 156         begin_critical_section(S_SESSION_TABLE);
 157         for (ccptr = ContextList; ccptr != NULL; ccptr = ccptr->next) {
 158                 if (ccptr->cs_flags & CS_CHAT) {
 159                         if (!strcasecmp(ccptr->quickroom.QRname,
 160                            CC->quickroom.QRname)) {
 161                                 ++count;
 162                         }
 163                         else {
 164                                 ++count_elsewhere;
 165                         }
 166                 }
 167
 168                 GenerateRoomDisplay(roomname, ccptr, CC);
 169                 if ((CC->usersupp.axlevel < 6)
 170                    && (strlen(ccptr->fake_roomname)>0)) {
 171                         strcpy(roomname, ccptr->fake_roomname);
 172                 }
 173
 174                 if ((ccptr->cs_flags & CS_CHAT)
 175                     && ((ccptr->cs_flags & CS_STEALTH) == 0)) {
 176                         if ((allflag == 0) || (allflag == 1)) {
 177                                 cprintf(":| %-25s <%s>:\n",
 178                                         (ccptr->fake_username[0]) ? ccptr->fake_username : ccptr->curr_user,
 179                                         roomname);
 180                         }
 181                 }
 182         }
 183
 184         if (allflag == 1) {
 185                 cprintf(":|\n:| Users not in chat:\n");
 186                 for (ccptr = ContextList; ccptr != NULL; ccptr = ccptr->next) {
 187
 188                         if (((ccptr->cs_flags & CS_CHAT) == 0)
 189                             && ((ccptr->cs_flags & CS_STEALTH) == 0)) {
 190                                 cprintf(":| %-25s <%s>:\n",
 191                                         (ccptr->fake_username[0]) ? ccptr->fake_username : ccptr->curr_user,
 192                                         roomname);
 193                         }
 194                 }
 195         }
 196         end_critical_section(S_SESSION_TABLE);
 197
 198         if (allflag == 2) {
 199                 if (count > 1) {
 200                         cprintf(":|There are %d users here.\n", count);
 201                 }
 202                 else {
 203                         cprintf(":|Note: you are the only one here.\n");
 204                 }
 205                 if (count_elsewhere > 0) {
 206                         cprintf(":|There are %d users chatting in other rooms.\n", count_elsewhere);
 207                 }
 208         }
 209
 210         cprintf(":|\n");
 211 }
 212
 213
 214 void cmd_chat(char *argbuf)
 215 {
 216         char cmdbuf[256];
 217         char *un;
 218         char *strptr1;
 219         int MyLastMsg, ThisLastMsg;
 220         struct ChatLine *clptr;
 221         struct CitContext *t_context;
 222         int retval;
 223
 224         if (!(CC->logged_in)) {
 225                 cprintf("%d Not logged in.\n", ERROR + NOT_LOGGED_IN);
 226                 return;
 227         }
 228
 229         CC->cs_flags = CC->cs_flags | CS_CHAT;
 230         cprintf("%d Entering chat mode (type '/help' for available commands)\n",
 231                 START_CHAT_MODE);
 232
 233         MyLastMsg = ChatLastMsg;
 234
 235         if ((CC->cs_flags & CS_STEALTH) == 0) {
 236                 allwrite("<entering chat>", 0, NULL);
 237         }
 238         strcpy(cmdbuf, "");
 239
 240         do_chat_listing(2);
 241
 242         while (1) {
 243                 int ok_cmd;
 244                 int linelen;
 245
 246                 ok_cmd = 0;
 247                 linelen = strlen(cmdbuf);
 248                 if (linelen > 100) --linelen;   /* truncate too-long lines */
 249                 cmdbuf[linelen + 1] = 0;
 250
 251                 retval = client_read_to(&cmdbuf[linelen], 1, 2);
 252
 253                 if (retval < 0) {       /* socket broken? */
 254                         if ((CC->cs_flags & CS_STEALTH) == 0) {
 255                                 allwrite("<disconnected>", 0, NULL);
 256                         }
 257                         return;
 258                 }
 259
 260                 /* if we have a complete line, do send processing */
 261                 if (strlen(cmdbuf) > 0)
 262                         if (cmdbuf[strlen(cmdbuf) - 1] == 10) {
 263                                 cmdbuf[strlen(cmdbuf) - 1] = 0;
 264                                 time(&CC->lastcmd);
 265                                 time(&CC->lastidle);
 266
 267                                 if ((!strcasecmp(cmdbuf, "exit"))
 268                                     || (!strcasecmp(cmdbuf, "/exit"))
 269                                     || (!strcasecmp(cmdbuf, "quit"))
 270                                     || (!strcasecmp(cmdbuf, "logout"))
 271                                     || (!strcasecmp(cmdbuf, "logoff"))
 272                                     || (!strcasecmp(cmdbuf, "/q"))
 273                                     || (!strcasecmp(cmdbuf, ".q"))
 274                                     || (!strcasecmp(cmdbuf, "/quit"))
 275                                     )
 276                                         strcpy(cmdbuf, "000");
 277
 278                                 if (!strcmp(cmdbuf, "000")) {
 279                                         if ((CC->cs_flags & CS_STEALTH) == 0) {
 280                                                 allwrite("<exiting chat>", 0, NULL);
 281                                         }
 282                                         sleep(1);
 283                                         cprintf("000\n");
 284                                         CC->cs_flags = CC->cs_flags - CS_CHAT;
 285                                         return;
 286                                 }
 287                                 if ((!strcasecmp(cmdbuf, "/help"))
 288                                     || (!strcasecmp(cmdbuf, "help"))
 289                                     || (!strcasecmp(cmdbuf, "/?"))
 290                                     || (!strcasecmp(cmdbuf, "?"))) {
 291                                         cprintf(":|\n");
 292                                         cprintf(":|Available commands: \n");
 293                                         cprintf(":|/help   (prints this message) \n");
 294                                         cprintf(":|/who    (list users currently in chat) \n");
 295                                         cprintf(":|/whobbs (list users in chat -and- elsewhere) \n");
 296                                         cprintf(":|/me     ('action' line, ala irc) \n");
 297                                         cprintf(":|/msg    (send private message, ala irc) \n");
 298                                         cprintf(":|/quit   (return to the BBS) \n");
 299                                         cprintf(":|\n");
 300                                         ok_cmd = 1;
 301                                 }
 302                                 if (!strcasecmp(cmdbuf, "/who")) {
 303                                         do_chat_listing(0);
 304                                         ok_cmd = 1;
 305                                 }
 306                                 if (!strcasecmp(cmdbuf, "/whobbs")) {
 307                                         do_chat_listing(1);
 308                                         ok_cmd = 1;
 309                                 }
 310                                 if (!strncasecmp(cmdbuf, "/me ", 4)) {
 311                                         allwrite(&cmdbuf[4], 1, NULL);
 312                                         ok_cmd = 1;
 313                                 }
 314                                 if (!strncasecmp(cmdbuf, "/msg ", 5)) {
 315                                         ok_cmd = 1;
 316                                         strptr1 = &cmdbuf[5];
 317                                         if ((t_context = find_context(&strptr1))) {
 318                                                 allwrite(strptr1, 2, CC->curr_user);
 319                                                 if (strcasecmp(CC->curr_user, t_context->curr_user))
 320                                                         allwrite(strptr1, 2, t_context->curr_user);
 321                                         } else
 322                                                 cprintf(":|User not found.\n", cmdbuf);
 323                                         cprintf("\n");
 324                                 }
 325                                 if ((cmdbuf[0] != '/') && (strlen(cmdbuf) > 0)) {
 326                                         ok_cmd = 1;
 327                                         allwrite(cmdbuf, 0, NULL);
 328                                 }
 329                                 if ((!ok_cmd) && (cmdbuf[0]) && (cmdbuf[0] != '\n'))
 330                                         cprintf(":|Command %s is not understood.\n", cmdbuf);
 331
 332                                 strcpy(cmdbuf, "");
 333
 334                         }
 335                 /* now check the queue for new incoming stuff */
 336
 337                 if (CC->fake_username[0])
 338                         un = CC->fake_username;
 339                 else
 340                         un = CC->curr_user;
 341                 if (ChatLastMsg > MyLastMsg) {
 342                         ThisLastMsg = ChatLastMsg;
 343                         for (clptr = ChatQueue; clptr != NULL; clptr = clptr->next) {
 344                                 if ((clptr->chat_seq > MyLastMsg) && ((!clptr->chat_username[0]) || (!strncasecmp(un, clptr->chat_username, 32)))) {
 345                                         if ((!clptr->chat_room[0]) || (!strncasecmp(CC->quickroom.QRname, clptr->chat_room, ROOMNAMELEN))) {
 346                                                 cprintf("%s\n", clptr->chat_text);
 347                                         }
 348                                 }
 349                         }
 350                         MyLastMsg = ThisLastMsg;
 351                 }
 352         }
 353 }
 354
 355
 356
 357 /*
 358  * Delete any remaining express messages
 359  */
 360 void delete_express_messages(void) {
 361         struct ExpressMessage *ptr;
 362
 363         begin_critical_section(S_SESSION_TABLE);
 364         while (CC->FirstExpressMessage != NULL) {
 365                 ptr = CC->FirstExpressMessage->next;
 366                 if (CC->FirstExpressMessage->text != NULL)
 367                         phree(CC->FirstExpressMessage->text);
 368                 phree(CC->FirstExpressMessage);
 369                 CC->FirstExpressMessage = ptr;
 370                 }
 371         end_critical_section(S_SESSION_TABLE);
 372         }
 373
 374
 375
 376
 377 /*
 378  * Poll for express messages (OLD METHOD -- ***DEPRECATED ***)
 379  */
 380 void cmd_pexp(char *argbuf)
 381 {
 382         struct ExpressMessage *ptr, *holdptr;
 383
 384         if (CC->FirstExpressMessage == NULL) {
 385                 cprintf("%d No express messages waiting.\n", ERROR);
 386                 return;
 387         }
 388         begin_critical_section(S_SESSION_TABLE);
 389         ptr = CC->FirstExpressMessage;
 390         CC->FirstExpressMessage = NULL;
 391         end_critical_section(S_SESSION_TABLE);
 392
 393         cprintf("%d Express msgs:\n", LISTING_FOLLOWS);
 394         while (ptr != NULL) {
 395                 if (ptr->flags && EM_BROADCAST)
 396                         cprintf("Broadcast message ");
 397                 else if (ptr->flags && EM_CHAT)
 398                         cprintf("Chat request ");
 399                 else if (ptr->flags && EM_GO_AWAY)
 400                         cprintf("Please logoff now, as requested ");
 401                 else
 402                         cprintf("Message ");
 403                 cprintf("from %s:\n", ptr->sender);
 404                 if (ptr->text != NULL)
 405                         memfmout(80, ptr->text, 0, "\n");
 406
 407                 holdptr = ptr->next;
 408                 if (ptr->text != NULL) phree(ptr->text);
 409                 phree(ptr);
 410                 ptr = holdptr;
 411         }
 412         cprintf("000\n");
 413 }
 414
 415
 416 /*
 417  * Get express messages (new method)
 418  */
 419 void cmd_gexp(char *argbuf) {
 420         struct ExpressMessage *ptr;
 421
 422         if (CC->FirstExpressMessage == NULL) {
 423                 cprintf("%d No express messages waiting.\n", ERROR);
 424                 return;
 425         }
 426
 427         begin_critical_section(S_SESSION_TABLE);
 428         ptr = CC->FirstExpressMessage;
 429         CC->FirstExpressMessage = CC->FirstExpressMessage->next;
 430         end_critical_section(S_SESSION_TABLE);
 431
 432         cprintf("%d %d|%ld|%d|%s|%s\n",
 433                 LISTING_FOLLOWS,
 434                 ((ptr->next != NULL) ? 1 : 0),          /* more msgs? */
 435                 ptr->timestamp,                         /* time sent */
 436                 ptr->flags,                             /* flags */
 437                 ptr->sender,                            /* sender of msg */
 438                 config.c_nodename);                     /* static for now */
 439         if (ptr->text != NULL) {
 440                 memfmout(80, ptr->text, 0, "\n");
 441                 if (ptr->text[strlen(ptr->text)-1] != '\n') cprintf("\n");
 442                 phree(ptr->text);
 443                 }
 444         cprintf("000\n");
 445         phree(ptr);
 446 }
 447
 448
 449
 450 /*
 451  * This is the back end to the express message sending function.
 452  * Returns the number of users to which the message was sent.
 453  * Sending a zero-length message tests for recipients without sending messages.
 454  */
 455 int send_express_message(char *lun, char *x_user, char *x_msg)
 456 {
 457         int message_sent = 0;           /* number of successful sends */
 458
 459         struct CitContext *ccptr;
 460         struct ExpressMessage *newmsg, *findend;
 461         char *un;
 462         size_t msglen = 0;
 463         int do_send = 0;                /* set to 1 to actually page, not
 464                                          * just check to see if we can.
 465                                          */
 466         struct savelist *sl = NULL;     /* list of rooms to save this page */
 467         struct savelist *sptr;
 468         struct CtdlMessage *logmsg;
 469         char roomname[ROOMNAMELEN];
 470         long msgnum;
 471
 472         if (strlen(x_msg) > 0) {
 473                 msglen = strlen(x_msg) + 4;
 474                 do_send = 1;
 475                 }
 476
 477         /* find the target user's context and append the message */
 478         begin_critical_section(S_SESSION_TABLE);
 479         for (ccptr = ContextList; ccptr != NULL; ccptr = ccptr->next) {
 480
 481                 if (ccptr->fake_username[0])    /* <bc> */
 482                         un = ccptr->fake_username;
 483                 else
 484                         un = ccptr->usersupp.fullname;
 485
 486                 if ( ((!strcasecmp(un, x_user))
 487                     || (!strcasecmp(x_user, "broadcast")))
 488                     && ((ccptr->disable_exp == 0)
 489                     || (CC->usersupp.axlevel >= 6)) ) {
 490                         if (do_send) {
 491                                 newmsg = (struct ExpressMessage *)
 492                                         mallok(sizeof (struct ExpressMessage));
 493                                 memset(newmsg, 0,
 494                                         sizeof (struct ExpressMessage));
 495                                 safestrncpy(newmsg->sender, lun,
 496                                             sizeof newmsg->sender);
 497                                 if (!strcasecmp(x_user, "broadcast"))
 498                                         newmsg->flags |= EM_BROADCAST;
 499                                 newmsg->text = mallok(msglen);
 500                                 safestrncpy(newmsg->text, x_msg, msglen);
 501
 502                                 if (ccptr->FirstExpressMessage == NULL)
 503                                         ccptr->FirstExpressMessage = newmsg;
 504                                 else {
 505                                         findend = ccptr->FirstExpressMessage;
 506                                         while (findend->next != NULL)
 507                                                 findend = findend->next;
 508                                         findend->next = newmsg;
 509                                 }
 510
 511                                 /* and log it ... */
 512                                 if (ccptr != CC) {
 513                                         sptr = (struct savelist *)
 514                                                 malloc(sizeof(struct savelist));
 515                                         sptr->next = sl;
 516                                         MailboxName(sptr->roomname,
 517                                                 &ccptr->usersupp, PAGELOGROOM);
 518                                         sl = sptr;
 519                                 }
 520                         }
 521                         ++message_sent;
 522                 }
 523         }
 524         end_critical_section(S_SESSION_TABLE);
 525
 526         /* Log the page to disk if configured to do so  */
 527         if ( (do_send) && (message_sent) ) {
 528
 529                 logmsg = mallok(sizeof(struct CtdlMessage));
 530                 memset(logmsg, 0, sizeof(struct CtdlMessage));
 531                 logmsg->cm_magic = CTDLMESSAGE_MAGIC;
 532                 logmsg->cm_anon_type = MES_NORMAL;
 533                 logmsg->cm_format_type = 0;
 534                 logmsg->cm_fields['A'] = strdoop(lun);
 535                 logmsg->cm_fields['N'] = strdoop(NODENAME);
 536                 logmsg->cm_fields['O'] = strdoop(PAGELOGROOM);
 537                 logmsg->cm_fields['R'] = strdoop(x_user);
 538                 logmsg->cm_fields['M'] = strdoop(x_msg);
 539
 540                 MailboxName(roomname, &CC->usersupp, PAGELOGROOM);
 541                 create_room(roomname, 4, "", 0);
 542                 msgnum = CtdlSaveMsg(logmsg, "", roomname, MES_LOCAL);
 543                 if (strlen(config.c_logpages) > 0) {
 544                         create_room(config.c_logpages, 3, "", 0);
 545                         CtdlSaveMsgPointerInRoom(config.c_logpages, msgnum, 0);
 546                 }
 547                 while (sl != NULL) {
 548                         create_room(sl->roomname, 4, "", 0);
 549                         CtdlSaveMsgPointerInRoom(sl->roomname, msgnum, 0);
 550                         sptr = sl->next;
 551                         phree(sl);
 552                         sl = sptr;
 553                 }
 554
 555                 CtdlFreeMessage(logmsg);
 556         }
 557
 558         return (message_sent);
 559 }
 560
 561 /*
 562  * send express messages  <bc>
 563  */
 564 void cmd_sexp(char *argbuf)
 565 {
 566         int message_sent = 0;
 567         char x_user[256];
 568         char x_msg[256];
 569         char *lun;              /* <bc> */
 570         char *x_big_msgbuf = NULL;
 571
 572         if ((!(CC->logged_in)) && (!(CC->internal_pgm))) {
 573                 cprintf("%d Not logged in.\n", ERROR + NOT_LOGGED_IN);
 574                 return;
 575         }
 576         if (CC->fake_username[0])
 577                 lun = CC->fake_username;
 578         else
 579                 lun = CC->usersupp.fullname;
 580
 581         extract(x_user, argbuf, 0);
 582
 583         extract(x_msg, argbuf, 1);
 584
 585         if (!x_user[0]) {
 586                 cprintf("%d You were not previously paged.\n", ERROR);
 587                 return;
 588         }
 589         if ((!strcasecmp(x_user, "broadcast")) && (CC->usersupp.axlevel < 6)) {
 590                 cprintf("%d Higher access required to send a broadcast.\n",
 591                         ERROR + HIGHER_ACCESS_REQUIRED);
 592                 return;
 593         }
 594         /* This loop handles text-transfer pages */
 595         if (!strcmp(x_msg, "-")) {
 596                 message_sent = PerformXmsgHooks(lun, x_user, "");
 597                 if (message_sent == 0) {
 598                         cprintf("%d '%s' is not logged in "
 599                                 "or is not accepting pages.\n",
 600                                 ERROR, x_user);
 601                         return;
 602                 }
 603                 cprintf("%d Transmit message (will deliver to %d users)\n",
 604                         SEND_LISTING, message_sent);
 605                 x_big_msgbuf = mallok(256);
 606                 memset(x_big_msgbuf, 0, 256);
 607                 while (client_gets(x_msg), strcmp(x_msg, "000")) {
 608                         x_big_msgbuf = reallok(x_big_msgbuf,
 609                                strlen(x_big_msgbuf) + strlen(x_msg) + 4);
 610                         if (strlen(x_big_msgbuf) > 0)
 611                            if (x_big_msgbuf[strlen(x_big_msgbuf)] != '\n')
 612                                 strcat(x_big_msgbuf, "\n");
 613                         strcat(x_big_msgbuf, x_msg);
 614                 }
 615                 PerformXmsgHooks(lun, x_user, x_big_msgbuf);
 616                 phree(x_big_msgbuf);
 617
 618                 /* This loop handles inline pages */
 619         } else {
 620                 message_sent = PerformXmsgHooks(lun, x_user, x_msg);
 621
 622                 if (message_sent > 0) {
 623                         if (strlen(x_msg) > 0)
 624                                 cprintf("%d Message sent", OK);
 625                         else
 626                                 cprintf("%d Ok to send message", OK);
 627                         if (message_sent > 1)
 628                                 cprintf(" to %d users", message_sent);
 629                         cprintf(".\n");
 630                 } else {
 631                         cprintf("%d '%s' is not logged in "
 632                                 "or is not accepting pages.\n",
 633                                 ERROR, x_user);
 634                 }
 635
 636
 637         }
 638 }
 639
 640
 641
 642 /*
 643  * Enter or exit paging-disabled mode
 644  */
 645 void cmd_dexp(char *argbuf)
 646 {
 647         int new_state;
 648
 649         if (!CC->logged_in) {
 650                 cprintf("%d Not logged in.\n",ERROR+NOT_LOGGED_IN);
 651                 return;
 652                 }
 653
 654         new_state = extract_int(argbuf, 0);
 655         if ((new_state == 0) || (new_state == 1)) {
 656                 CC->disable_exp = new_state;
 657                 }
 658         cprintf("%d %d\n", OK, CC->disable_exp);
 659         }
 660
 661
 662
 663
 664
 665 char *Dynamic_Module_Init(void)
 666 {
 667         CtdlRegisterProtoHook(cmd_chat, "CHAT", "Begin real-time chat");
 668         CtdlRegisterProtoHook(cmd_pexp, "PEXP", "Poll for express messages");
 669         CtdlRegisterProtoHook(cmd_gexp, "GEXP", "Get express messages");
 670         CtdlRegisterProtoHook(cmd_sexp, "SEXP", "Send an express message");
 671         CtdlRegisterProtoHook(cmd_dexp, "DEXP", "Disable express messages");
 672         CtdlRegisterSessionHook(delete_express_messages, EVT_STOP);
 673         CtdlRegisterXmsgHook(send_express_message, XMSG_PRI_LOCAL);
 674         return "$Id$";
 675 }
 676