citadel/serv_chat.c

   1 /*
   2  * serv_chat.c
   3  *
   4  * This module handles all "real time" communication between users.  The
   5  * modes of communication currently supported are Chat and Paging.
   6  *
   7  * $Id$
   8  */
   9 #include "sysdep.h"
  10 #include <stdlib.h>
  11 #include <unistd.h>
  12 #include <stdio.h>
  13 #include <fcntl.h>
  14 #include <signal.h>
  15 #include <pwd.h>
  16 #include <errno.h>
  17 #include <sys/types.h>
  18 #include <sys/time.h>
  19 #include <sys/wait.h>
  20 #include <string.h>
  21 #include <limits.h>
  22 #include "citadel.h"
  23 #include "server.h"
  24 #include <syslog.h>
  25 #include "serv_chat.h"
  26 #include "sysdep_decls.h"
  27 #include "citserver.h"
  28 #include "support.h"
  29 #include "config.h"
  30 #include "dynloader.h"
  31 #include "tools.h"
  32 #include "msgbase.h"
  33 #include "user_ops.h"
  34 #include "room_ops.h"
  35
  36 struct ChatLine *ChatQueue = NULL;
  37 int ChatLastMsg = 0;
  38
  39 extern struct CitContext *ContextList;
  40
  41
  42
  43 void allwrite(char *cmdbuf, int flag, char *username)
  44 {
  45         FILE *fp;
  46         char bcast[256];
  47         char *un;
  48         struct ChatLine *clptr, *clnew;
  49         time_t now;
  50
  51         if (CC->fake_username[0])
  52                 un = CC->fake_username;
  53         else
  54                 un = CC->usersupp.fullname;
  55         if (flag == 1) {
  56                 snprintf(bcast, sizeof bcast, ":|<%s %s>", un, cmdbuf);
  57         } else if (flag == 0) {
  58                 snprintf(bcast, sizeof bcast, "%s|%s", un, cmdbuf);
  59         } else if (flag == 2) {
  60                 snprintf(bcast, sizeof bcast, ":|<%s whispers %s>", un, cmdbuf);
  61         }
  62         if ((strcasecmp(cmdbuf, "NOOP")) && (flag != 2)) {
  63                 fp = fopen(CHATLOG, "a");
  64                 fprintf(fp, "%s\n", bcast);
  65                 fclose(fp);
  66         }
  67         clnew = (struct ChatLine *) mallok(sizeof(struct ChatLine));
  68         memset(clnew, 0, sizeof(struct ChatLine));
  69         if (clnew == NULL) {
  70                 fprintf(stderr, "citserver: cannot alloc chat line: %s\n",
  71                         strerror(errno));
  72                 return;
  73         }
  74         time(&now);
  75         clnew->next = NULL;
  76         clnew->chat_time = now;
  77         safestrncpy(clnew->chat_room, CC->quickroom.QRname,
  78                         sizeof clnew->chat_room);
  79         clnew->chat_room[sizeof clnew->chat_room - 1] = 0;
  80         if (username) {
  81                 safestrncpy(clnew->chat_username, username,
  82                         sizeof clnew->chat_username);
  83                 clnew->chat_username[sizeof clnew->chat_username - 1] = 0;
  84         } else
  85                 clnew->chat_username[0] = '\0';
  86         safestrncpy(clnew->chat_text, bcast, sizeof clnew->chat_text);
  87
  88         /* Here's the critical section.
  89          * First, add the new message to the queue...
  90          */
  91         begin_critical_section(S_CHATQUEUE);
  92         ++ChatLastMsg;
  93         clnew->chat_seq = ChatLastMsg;
  94         if (ChatQueue == NULL) {
  95                 ChatQueue = clnew;
  96         } else {
  97                 for (clptr = ChatQueue; clptr->next != NULL; clptr = clptr->next);;
  98                 clptr->next = clnew;
  99         }
 100
 101         /* Then, before releasing the lock, free the expired messages */
 102         while (1) {
 103                 if (ChatQueue == NULL)
 104                         goto DONE_FREEING;
 105                 if ((now - ChatQueue->chat_time) < 120L)
 106                         goto DONE_FREEING;
 107                 clptr = ChatQueue;
 108                 ChatQueue = ChatQueue->next;
 109                 phree(clptr);
 110         }
 111 DONE_FREEING:
 112         end_critical_section(S_CHATQUEUE);
 113 }
 114
 115
 116 t_context *find_context(char **unstr)
 117 {
 118         t_context *t_cc, *found_cc = NULL;
 119         char *name, *tptr;
 120
 121         if ((!*unstr) || (!unstr))
 122                 return (NULL);
 123
 124         begin_critical_section(S_SESSION_TABLE);
 125         for (t_cc = ContextList; ((t_cc) && (!found_cc)); t_cc = t_cc->next) {
 126                 if (t_cc->fake_username[0])
 127                         name = t_cc->fake_username;
 128                 else
 129                         name = t_cc->curr_user;
 130                 tptr = *unstr;
 131                 if ((!strncasecmp(name, tptr, strlen(name))) && (tptr[strlen(name)] == ' ')) {
 132                         found_cc = t_cc;
 133                         *unstr = &(tptr[strlen(name) + 1]);
 134                 }
 135         }
 136         end_critical_section(S_SESSION_TABLE);
 137
 138         return (found_cc);
 139 }
 140
 141 /*
 142  * List users in chat.
 143  * allflag ==   0 = list users in chat
 144  *              1 = list users in chat, followed by users not in chat
 145  *              2 = display count only
 146  */
 147
 148 void do_chat_listing(int allflag)
 149 {
 150         struct CitContext *ccptr;
 151         int count = 0;
 152         int count_elsewhere = 0;
 153         char roomname[ROOMNAMELEN];
 154
 155         if ((allflag == 0) || (allflag == 1))
 156                 cprintf(":|\n:| Users currently in chat:\n");
 157         begin_critical_section(S_SESSION_TABLE);
 158         for (ccptr = ContextList; ccptr != NULL; ccptr = ccptr->next) {
 159                 if (ccptr->cs_flags & CS_CHAT) {
 160                         if (!strcasecmp(ccptr->quickroom.QRname,
 161                            CC->quickroom.QRname)) {
 162                                 ++count;
 163                         }
 164                         else {
 165                                 ++count_elsewhere;
 166                         }
 167                 }
 168
 169                 GenerateRoomDisplay(roomname, ccptr, CC);
 170                 if ((CC->usersupp.axlevel < 6)
 171                    && (strlen(ccptr->fake_roomname)>0)) {
 172                         strcpy(roomname, ccptr->fake_roomname);
 173                 }
 174
 175                 if ((ccptr->cs_flags & CS_CHAT)
 176                     && ((ccptr->cs_flags & CS_STEALTH) == 0)) {
 177                         if ((allflag == 0) || (allflag == 1)) {
 178                                 cprintf(":| %-25s <%s>:\n",
 179                                         (ccptr->fake_username[0]) ? ccptr->fake_username : ccptr->curr_user,
 180                                         roomname);
 181                         }
 182                 }
 183         }
 184
 185         if (allflag == 1) {
 186                 cprintf(":|\n:| Users not in chat:\n");
 187                 for (ccptr = ContextList; ccptr != NULL; ccptr = ccptr->next) {
 188
 189                         if (((ccptr->cs_flags & CS_CHAT) == 0)
 190                             && ((ccptr->cs_flags & CS_STEALTH) == 0)) {
 191                                 cprintf(":| %-25s <%s>:\n",
 192                                         (ccptr->fake_username[0]) ? ccptr->fake_username : ccptr->curr_user,
 193                                         roomname);
 194                         }
 195                 }
 196         }
 197         end_critical_section(S_SESSION_TABLE);
 198
 199         if (allflag == 2) {
 200                 if (count > 1) {
 201                         cprintf(":|There are %d users here.\n", count);
 202                 }
 203                 else {
 204                         cprintf(":|Note: you are the only one here.\n");
 205                 }
 206                 if (count_elsewhere > 0) {
 207                         cprintf(":|There are %d users chatting in other rooms.\n", count_elsewhere);
 208                 }
 209         }
 210
 211         cprintf(":|\n");
 212 }
 213
 214
 215 void cmd_chat(char *argbuf)
 216 {
 217         char cmdbuf[256];
 218         char *un;
 219         char *strptr1;
 220         int MyLastMsg, ThisLastMsg;
 221         struct ChatLine *clptr;
 222         struct CitContext *t_context;
 223         int retval;
 224
 225         if (!(CC->logged_in)) {
 226                 cprintf("%d Not logged in.\n", ERROR + NOT_LOGGED_IN);
 227                 return;
 228         }
 229
 230         CC->cs_flags = CC->cs_flags | CS_CHAT;
 231         cprintf("%d Entering chat mode (type '/help' for available commands)\n",
 232                 START_CHAT_MODE);
 233
 234         MyLastMsg = ChatLastMsg;
 235
 236         if ((CC->cs_flags & CS_STEALTH) == 0) {
 237                 allwrite("<entering chat>", 0, NULL);
 238         }
 239         strcpy(cmdbuf, "");
 240
 241         do_chat_listing(2);
 242
 243         while (1) {
 244                 int ok_cmd;
 245                 int linelen;
 246
 247                 ok_cmd = 0;
 248                 linelen = strlen(cmdbuf);
 249                 if (linelen > 100) --linelen;   /* truncate too-long lines */
 250                 cmdbuf[linelen + 1] = 0;
 251
 252                 retval = client_read_to(&cmdbuf[linelen], 1, 2);
 253
 254                 if (retval < 0) {       /* socket broken? */
 255                         if ((CC->cs_flags & CS_STEALTH) == 0) {
 256                                 allwrite("<disconnected>", 0, NULL);
 257                         }
 258                         return;
 259                 }
 260
 261                 /* if we have a complete line, do send processing */
 262                 if (strlen(cmdbuf) > 0)
 263                         if (cmdbuf[strlen(cmdbuf) - 1] == 10) {
 264                                 cmdbuf[strlen(cmdbuf) - 1] = 0;
 265                                 time(&CC->lastcmd);
 266                                 time(&CC->lastidle);
 267
 268                                 if ((!strcasecmp(cmdbuf, "exit"))
 269                                     || (!strcasecmp(cmdbuf, "/exit"))
 270                                     || (!strcasecmp(cmdbuf, "quit"))
 271                                     || (!strcasecmp(cmdbuf, "logout"))
 272                                     || (!strcasecmp(cmdbuf, "logoff"))
 273                                     || (!strcasecmp(cmdbuf, "/q"))
 274                                     || (!strcasecmp(cmdbuf, ".q"))
 275                                     || (!strcasecmp(cmdbuf, "/quit"))
 276                                     )
 277                                         strcpy(cmdbuf, "000");
 278
 279                                 if (!strcmp(cmdbuf, "000")) {
 280                                         if ((CC->cs_flags & CS_STEALTH) == 0) {
 281                                                 allwrite("<exiting chat>", 0, NULL);
 282                                         }
 283                                         sleep(1);
 284                                         cprintf("000\n");
 285                                         CC->cs_flags = CC->cs_flags - CS_CHAT;
 286                                         return;
 287                                 }
 288                                 if ((!strcasecmp(cmdbuf, "/help"))
 289                                     || (!strcasecmp(cmdbuf, "help"))
 290                                     || (!strcasecmp(cmdbuf, "/?"))
 291                                     || (!strcasecmp(cmdbuf, "?"))) {
 292                                         cprintf(":|\n");
 293                                         cprintf(":|Available commands: \n");
 294                                         cprintf(":|/help   (prints this message) \n");
 295                                         cprintf(":|/who    (list users currently in chat) \n");
 296                                         cprintf(":|/whobbs (list users in chat -and- elsewhere) \n");
 297                                         cprintf(":|/me     ('action' line, ala irc) \n");
 298                                         cprintf(":|/msg    (send private message, ala irc) \n");
 299                                         cprintf(":|/quit   (return to the BBS) \n");
 300                                         cprintf(":|\n");
 301                                         ok_cmd = 1;
 302                                 }
 303                                 if (!strcasecmp(cmdbuf, "/who")) {
 304                                         do_chat_listing(0);
 305                                         ok_cmd = 1;
 306                                 }
 307                                 if (!strcasecmp(cmdbuf, "/whobbs")) {
 308                                         do_chat_listing(1);
 309                                         ok_cmd = 1;
 310                                 }
 311                                 if (!strncasecmp(cmdbuf, "/me ", 4)) {
 312                                         allwrite(&cmdbuf[4], 1, NULL);
 313                                         ok_cmd = 1;
 314                                 }
 315                                 if (!strncasecmp(cmdbuf, "/msg ", 5)) {
 316                                         ok_cmd = 1;
 317                                         strptr1 = &cmdbuf[5];
 318                                         if ((t_context = find_context(&strptr1))) {
 319                                                 allwrite(strptr1, 2, CC->curr_user);
 320                                                 if (strcasecmp(CC->curr_user, t_context->curr_user))
 321                                                         allwrite(strptr1, 2, t_context->curr_user);
 322                                         } else
 323                                                 cprintf(":|User not found.\n", cmdbuf);
 324                                         cprintf("\n");
 325                                 }
 326                                 if ((cmdbuf[0] != '/') && (strlen(cmdbuf) > 0)) {
 327                                         ok_cmd = 1;
 328                                         allwrite(cmdbuf, 0, NULL);
 329                                 }
 330                                 if ((!ok_cmd) && (cmdbuf[0]) && (cmdbuf[0] != '\n'))
 331                                         cprintf(":|Command %s is not understood.\n", cmdbuf);
 332
 333                                 strcpy(cmdbuf, "");
 334
 335                         }
 336                 /* now check the queue for new incoming stuff */
 337
 338                 if (CC->fake_username[0])
 339                         un = CC->fake_username;
 340                 else
 341                         un = CC->curr_user;
 342                 if (ChatLastMsg > MyLastMsg) {
 343                         ThisLastMsg = ChatLastMsg;
 344                         for (clptr = ChatQueue; clptr != NULL; clptr = clptr->next) {
 345                                 if ((clptr->chat_seq > MyLastMsg) && ((!clptr->chat_username[0]) || (!strncasecmp(un, clptr->chat_username, 32)))) {
 346                                         if ((!clptr->chat_room[0]) || (!strncasecmp(CC->quickroom.QRname, clptr->chat_room, ROOMNAMELEN))) {
 347                                                 cprintf("%s\n", clptr->chat_text);
 348                                         }
 349                                 }
 350                         }
 351                         MyLastMsg = ThisLastMsg;
 352                 }
 353         }
 354 }
 355
 356
 357
 358 /*
 359  * Delete any remaining express messages
 360  */
 361 void delete_express_messages(void) {
 362         struct ExpressMessage *ptr;
 363
 364         begin_critical_section(S_SESSION_TABLE);
 365         while (CC->FirstExpressMessage != NULL) {
 366                 ptr = CC->FirstExpressMessage->next;
 367                 if (CC->FirstExpressMessage->text != NULL)
 368                         phree(CC->FirstExpressMessage->text);
 369                 phree(CC->FirstExpressMessage);
 370                 CC->FirstExpressMessage = ptr;
 371                 }
 372         end_critical_section(S_SESSION_TABLE);
 373         }
 374
 375
 376
 377
 378 /*
 379  * Poll for express messages (OLD METHOD -- ***DEPRECATED ***)
 380  */
 381 void cmd_pexp(char *argbuf)
 382 {
 383         struct ExpressMessage *ptr, *holdptr;
 384
 385         if (CC->FirstExpressMessage == NULL) {
 386                 cprintf("%d No express messages waiting.\n", ERROR);
 387                 return;
 388         }
 389         begin_critical_section(S_SESSION_TABLE);
 390         ptr = CC->FirstExpressMessage;
 391         CC->FirstExpressMessage = NULL;
 392         end_critical_section(S_SESSION_TABLE);
 393
 394         cprintf("%d Express msgs:\n", LISTING_FOLLOWS);
 395         while (ptr != NULL) {
 396                 if (ptr->flags && EM_BROADCAST)
 397                         cprintf("Broadcast message ");
 398                 else if (ptr->flags && EM_CHAT)
 399                         cprintf("Chat request ");
 400                 else if (ptr->flags && EM_GO_AWAY)
 401                         cprintf("Please logoff now, as requested ");
 402                 else
 403                         cprintf("Message ");
 404                 cprintf("from %s:\n", ptr->sender);
 405                 if (ptr->text != NULL)
 406                         memfmout(80, ptr->text, 0, "\n");
 407
 408                 holdptr = ptr->next;
 409                 if (ptr->text != NULL) phree(ptr->text);
 410                 phree(ptr);
 411                 ptr = holdptr;
 412         }
 413         cprintf("000\n");
 414 }
 415
 416
 417 /*
 418  * Get express messages (new method)
 419  */
 420 void cmd_gexp(char *argbuf) {
 421         struct ExpressMessage *ptr;
 422
 423         if (CC->FirstExpressMessage == NULL) {
 424                 cprintf("%d No express messages waiting.\n", ERROR);
 425                 return;
 426         }
 427
 428         begin_critical_section(S_SESSION_TABLE);
 429         ptr = CC->FirstExpressMessage;
 430         CC->FirstExpressMessage = CC->FirstExpressMessage->next;
 431         end_critical_section(S_SESSION_TABLE);
 432
 433         cprintf("%d %d|%ld|%d|%s|%s\n",
 434                 LISTING_FOLLOWS,
 435                 ((ptr->next != NULL) ? 1 : 0),          /* more msgs? */
 436                 ptr->timestamp,                         /* time sent */
 437                 ptr->flags,                             /* flags */
 438                 ptr->sender,                            /* sender of msg */
 439                 config.c_nodename);                     /* static for now */
 440         if (ptr->text != NULL) {
 441                 memfmout(80, ptr->text, 0, "\n");
 442                 if (ptr->text[strlen(ptr->text)-1] != '\n') cprintf("\n");
 443                 phree(ptr->text);
 444                 }
 445         cprintf("000\n");
 446         phree(ptr);
 447 }
 448
 449
 450
 451 /*
 452  * This is the back end to the express message sending function.
 453  * Returns the number of users to which the message was sent.
 454  * Sending a zero-length message tests for recipients without sending messages.
 455  */
 456 int send_express_message(char *lun, char *x_user, char *x_msg)
 457 {
 458         int message_sent = 0;           /* number of successful sends */
 459
 460         struct CitContext *ccptr;
 461         struct ExpressMessage *newmsg, *findend;
 462         char *un;
 463         size_t msglen = 0;
 464         int do_send = 0;                /* set to 1 to actually page, not
 465                                          * just check to see if we can.
 466                                          */
 467         struct savelist *sl = NULL;     /* list of rooms to save this page */
 468         struct savelist *sptr;
 469         struct CtdlMessage *logmsg;
 470         char roomname[ROOMNAMELEN];
 471         long msgnum;
 472
 473         if (strlen(x_msg) > 0) {
 474                 msglen = strlen(x_msg) + 4;
 475                 do_send = 1;
 476                 }
 477
 478         /* find the target user's context and append the message */
 479         begin_critical_section(S_SESSION_TABLE);
 480         for (ccptr = ContextList; ccptr != NULL; ccptr = ccptr->next) {
 481
 482                 if (ccptr->fake_username[0])    /* <bc> */
 483                         un = ccptr->fake_username;
 484                 else
 485                         un = ccptr->usersupp.fullname;
 486
 487                 if ( ((!strcasecmp(un, x_user))
 488                     || (!strcasecmp(x_user, "broadcast")))
 489                     && ((ccptr->disable_exp == 0)
 490                     || (CC->usersupp.axlevel >= 6)) ) {
 491                         if (do_send) {
 492                                 newmsg = (struct ExpressMessage *)
 493                                         mallok(sizeof (struct ExpressMessage));
 494                                 memset(newmsg, 0,
 495                                         sizeof (struct ExpressMessage));
 496                                 safestrncpy(newmsg->sender, lun,
 497                                             sizeof newmsg->sender);
 498                                 if (!strcasecmp(x_user, "broadcast"))
 499                                         newmsg->flags |= EM_BROADCAST;
 500                                 newmsg->text = mallok(msglen);
 501                                 safestrncpy(newmsg->text, x_msg, msglen);
 502
 503                                 if (ccptr->FirstExpressMessage == NULL)
 504                                         ccptr->FirstExpressMessage = newmsg;
 505                                 else {
 506                                         findend = ccptr->FirstExpressMessage;
 507                                         while (findend->next != NULL)
 508                                                 findend = findend->next;
 509                                         findend->next = newmsg;
 510                                 }
 511
 512                                 /* and log it ... */
 513                                 if (ccptr != CC) {
 514                                         sptr = (struct savelist *)
 515                                                 malloc(sizeof(struct savelist));
 516                                         sptr->next = sl;
 517                                         MailboxName(sptr->roomname,
 518                                                 &ccptr->usersupp, PAGELOGROOM);
 519                                         sl = sptr;
 520                                 }
 521                         }
 522                         ++message_sent;
 523                 }
 524         }
 525         end_critical_section(S_SESSION_TABLE);
 526
 527         /* Log the page to disk if configured to do so  */
 528         if ( (do_send) && (message_sent) ) {
 529
 530                 logmsg = mallok(sizeof(struct CtdlMessage));
 531                 memset(logmsg, 0, sizeof(struct CtdlMessage));
 532                 logmsg->cm_magic = CTDLMESSAGE_MAGIC;
 533                 logmsg->cm_anon_type = MES_NORMAL;
 534                 logmsg->cm_format_type = 0;
 535                 logmsg->cm_fields['A'] = strdoop(lun);
 536                 logmsg->cm_fields['N'] = strdoop(NODENAME);
 537                 logmsg->cm_fields['O'] = strdoop(PAGELOGROOM);
 538                 logmsg->cm_fields['R'] = strdoop(x_user);
 539                 logmsg->cm_fields['M'] = strdoop(x_msg);
 540
 541                 MailboxName(roomname, &CC->usersupp, PAGELOGROOM);
 542                 create_room(roomname, 4, "", 0);
 543                 msgnum = CtdlSaveMsg(logmsg, "", roomname, MES_LOCAL);
 544                 if (strlen(config.c_logpages) > 0) {
 545                         create_room(config.c_logpages, 3, "", 0);
 546                         CtdlSaveMsgPointerInRoom(config.c_logpages, msgnum, 0);
 547                 }
 548                 while (sl != NULL) {
 549                         create_room(sl->roomname, 4, "", 0);
 550                         CtdlSaveMsgPointerInRoom(sl->roomname, msgnum, 0);
 551                         sptr = sl->next;
 552                         phree(sl);
 553                         sl = sptr;
 554                 }
 555
 556                 CtdlFreeMessage(logmsg);
 557         }
 558
 559         return (message_sent);
 560 }
 561
 562 /*
 563  * send express messages  <bc>
 564  */
 565 void cmd_sexp(char *argbuf)
 566 {
 567         int message_sent = 0;
 568         char x_user[256];
 569         char x_msg[256];
 570         char *lun;              /* <bc> */
 571         char *x_big_msgbuf = NULL;
 572
 573         if ((!(CC->logged_in)) && (!(CC->internal_pgm))) {
 574                 cprintf("%d Not logged in.\n", ERROR + NOT_LOGGED_IN);
 575                 return;
 576         }
 577         if (CC->fake_username[0])
 578                 lun = CC->fake_username;
 579         else
 580                 lun = CC->usersupp.fullname;
 581
 582         extract(x_user, argbuf, 0);
 583
 584         extract(x_msg, argbuf, 1);
 585
 586         if (!x_user[0]) {
 587                 cprintf("%d You were not previously paged.\n", ERROR);
 588                 return;
 589         }
 590         if ((!strcasecmp(x_user, "broadcast")) && (CC->usersupp.axlevel < 6)) {
 591                 cprintf("%d Higher access required to send a broadcast.\n",
 592                         ERROR + HIGHER_ACCESS_REQUIRED);
 593                 return;
 594         }
 595         /* This loop handles text-transfer pages */
 596         if (!strcmp(x_msg, "-")) {
 597                 message_sent = PerformXmsgHooks(lun, x_user, "");
 598                 if (message_sent == 0) {
 599                         cprintf("%d '%s' is not logged in "
 600                                 "or is not accepting pages.\n",
 601                                 ERROR, x_user);
 602                         return;
 603                 }
 604                 cprintf("%d Transmit message (will deliver to %d users)\n",
 605                         SEND_LISTING, message_sent);
 606                 x_big_msgbuf = mallok(256);
 607                 memset(x_big_msgbuf, 0, 256);
 608                 while (client_gets(x_msg), strcmp(x_msg, "000")) {
 609                         x_big_msgbuf = reallok(x_big_msgbuf,
 610                                strlen(x_big_msgbuf) + strlen(x_msg) + 4);
 611                         if (strlen(x_big_msgbuf) > 0)
 612                            if (x_big_msgbuf[strlen(x_big_msgbuf)] != '\n')
 613                                 strcat(x_big_msgbuf, "\n");
 614                         strcat(x_big_msgbuf, x_msg);
 615                 }
 616                 PerformXmsgHooks(lun, x_user, x_big_msgbuf);
 617                 phree(x_big_msgbuf);
 618
 619                 /* This loop handles inline pages */
 620         } else {
 621                 message_sent = PerformXmsgHooks(lun, x_user, x_msg);
 622
 623                 if (message_sent > 0) {
 624                         if (strlen(x_msg) > 0)
 625                                 cprintf("%d Message sent", OK);
 626                         else
 627                                 cprintf("%d Ok to send message", OK);
 628                         if (message_sent > 1)
 629                                 cprintf(" to %d users", message_sent);
 630                         cprintf(".\n");
 631                 } else {
 632                         cprintf("%d '%s' is not logged in "
 633                                 "or is not accepting pages.\n",
 634                                 ERROR, x_user);
 635                 }
 636
 637
 638         }
 639 }
 640
 641
 642
 643 /*
 644  * Enter or exit paging-disabled mode
 645  */
 646 void cmd_dexp(char *argbuf)
 647 {
 648         int new_state;
 649
 650         if (!CC->logged_in) {
 651                 cprintf("%d Not logged in.\n",ERROR+NOT_LOGGED_IN);
 652                 return;
 653                 }
 654
 655         new_state = extract_int(argbuf, 0);
 656         if ((new_state == 0) || (new_state == 1)) {
 657                 CC->disable_exp = new_state;
 658                 }
 659         cprintf("%d %d\n", OK, CC->disable_exp);
 660         }
 661
 662
 663
 664
 665
 666 char *Dynamic_Module_Init(void)
 667 {
 668         CtdlRegisterProtoHook(cmd_chat, "CHAT", "Begin real-time chat");
 669         CtdlRegisterProtoHook(cmd_pexp, "PEXP", "Poll for express messages");
 670         CtdlRegisterProtoHook(cmd_gexp, "GEXP", "Get express messages");
 671         CtdlRegisterProtoHook(cmd_sexp, "SEXP", "Send an express message");
 672         CtdlRegisterProtoHook(cmd_dexp, "DEXP", "Disable express messages");
 673         CtdlRegisterSessionHook(delete_express_messages, EVT_STOP);
 674         CtdlRegisterXmsgHook(send_express_message, XMSG_PRI_LOCAL);
 675         return "$Id$";
 676 }
 677