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