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
  18 #if TIME_WITH_SYS_TIME
  19 # include <sys/time.h>
  20 # include <time.h>
  21 #else
  22 # if HAVE_SYS_TIME_H
  23 #  include <sys/time.h>
  24 # else
  25 #  include <time.h>
  26 # endif
  27 #endif
  28
  29 #include <sys/wait.h>
  30 #include <string.h>
  31 #include <limits.h>
  32 #include "citadel.h"
  33 #include "server.h"
  34 #include "serv_extensions.h"
  35 #include "serv_chat.h"
  36 #include "sysdep_decls.h"
  37 #include "citserver.h"
  38 #include "support.h"
  39 #include "config.h"
  40 #include "tools.h"
  41 #include "msgbase.h"
  42 #include "user_ops.h"
  43 #include "room_ops.h"
  44
  45 #ifndef HAVE_SNPRINTF
  46 #include "snprintf.h"
  47 #endif
  48
  49 struct ChatLine *ChatQueue = NULL;
  50 int ChatLastMsg = 0;
  51
  52 /*
  53  * This message can be set to anything you want, but it is
  54  * checked for consistency so don't move it away from here.
  55  */
  56 #define KICKEDMSG "You have been kicked out of this room."
  57
  58 void allwrite(char *cmdbuf, int flag, char *username)
  59 {
  60         FILE *fp;
  61         char bcast[SIZ];
  62         char *un;
  63         struct ChatLine *clptr, *clnew;
  64         time_t now;
  65
  66         if (CC->fake_username[0])
  67                 un = CC->fake_username;
  68         else
  69                 un = CC->user.fullname;
  70         if (flag == 1) {
  71                 snprintf(bcast, sizeof bcast, ":|<%s %s>", un, cmdbuf);
  72         } else if (flag == 0) {
  73                 snprintf(bcast, sizeof bcast, "%s|%s", un, cmdbuf);
  74         } else if (flag == 2) {
  75                 snprintf(bcast, sizeof bcast, ":|<%s whispers %s>", un, cmdbuf);
  76         } else if (flag == 3) {
  77                 snprintf(bcast, sizeof bcast, ":|%s", KICKEDMSG);
  78         }
  79         if ((strcasecmp(cmdbuf, "NOOP")) && (flag != 2)) {
  80                 fp = fopen(CHATLOG, "a");
  81                 if (fp != NULL)
  82                         fprintf(fp, "%s\n", bcast);
  83                 fclose(fp);
  84         }
  85         clnew = (struct ChatLine *) malloc(sizeof(struct ChatLine));
  86         memset(clnew, 0, sizeof(struct ChatLine));
  87         if (clnew == NULL) {
  88                 fprintf(stderr, "citserver: cannot alloc chat line: %s\n",
  89                         strerror(errno));
  90                 return;
  91         }
  92         time(&now);
  93         clnew->next = NULL;
  94         clnew->chat_time = now;
  95         safestrncpy(clnew->chat_room, CC->room.QRname,
  96                         sizeof clnew->chat_room);
  97         clnew->chat_room[sizeof clnew->chat_room - 1] = 0;
  98         if (username) {
  99                 safestrncpy(clnew->chat_username, username,
 100                         sizeof clnew->chat_username);
 101                 clnew->chat_username[sizeof clnew->chat_username - 1] = 0;
 102         } else
 103                 clnew->chat_username[0] = '\0';
 104         safestrncpy(clnew->chat_text, bcast, sizeof clnew->chat_text);
 105
 106         /* Here's the critical section.
 107          * First, add the new message to the queue...
 108          */
 109         begin_critical_section(S_CHATQUEUE);
 110         ++ChatLastMsg;
 111         clnew->chat_seq = ChatLastMsg;
 112         if (ChatQueue == NULL) {
 113                 ChatQueue = clnew;
 114         } else {
 115                 for (clptr = ChatQueue; clptr->next != NULL; clptr = clptr->next);;
 116                 clptr->next = clnew;
 117         }
 118
 119         /* Then, before releasing the lock, free the expired messages */
 120         while ((ChatQueue != NULL) && (now - ChatQueue->chat_time >= 120L)) {
 121                 clptr = ChatQueue;
 122                 ChatQueue = ChatQueue->next;
 123                 free(clptr);
 124         }
 125         end_critical_section(S_CHATQUEUE);
 126 }
 127
 128
 129 t_context *find_context(char **unstr)
 130 {
 131         t_context *t_cc, *found_cc = NULL;
 132         char *name, *tptr;
 133
 134         if ((!*unstr) || (!unstr))
 135                 return (NULL);
 136
 137         begin_critical_section(S_SESSION_TABLE);
 138         for (t_cc = ContextList; ((t_cc) && (!found_cc)); t_cc = t_cc->next) {
 139                 if (t_cc->fake_username[0])
 140                         name = t_cc->fake_username;
 141                 else
 142                         name = t_cc->curr_user;
 143                 tptr = *unstr;
 144                 if ((!strncasecmp(name, tptr, strlen(name))) && (tptr[strlen(name)] == ' ')) {
 145                         found_cc = t_cc;
 146                         *unstr = &(tptr[strlen(name) + 1]);
 147                 }
 148         }
 149         end_critical_section(S_SESSION_TABLE);
 150
 151         return (found_cc);
 152 }
 153
 154 /*
 155  * List users in chat.
 156  * allflag ==   0 = list users in chat
 157  *              1 = list users in chat, followed by users not in chat
 158  *              2 = display count only
 159  */
 160
 161 void do_chat_listing(int allflag)
 162 {
 163         struct CitContext *ccptr;
 164         int count = 0;
 165         int count_elsewhere = 0;
 166         char roomname[ROOMNAMELEN];
 167
 168         if ((allflag == 0) || (allflag == 1))
 169                 cprintf(":|\n:| Users currently in chat:\n");
 170         begin_critical_section(S_SESSION_TABLE);
 171         for (ccptr = ContextList; ccptr != NULL; ccptr = ccptr->next) {
 172                 if (ccptr->cs_flags & CS_CHAT) {
 173                         if (!strcasecmp(ccptr->room.QRname,
 174                            CC->room.QRname)) {
 175                                 ++count;
 176                         }
 177                         else {
 178                                 ++count_elsewhere;
 179                         }
 180                 }
 181
 182                 GenerateRoomDisplay(roomname, ccptr, CC);
 183                 if ((CC->user.axlevel < 6)
 184                    && (strlen(ccptr->fake_roomname)>0)) {
 185                         strcpy(roomname, ccptr->fake_roomname);
 186                 }
 187
 188                 if ((ccptr->cs_flags & CS_CHAT)
 189                     && ((ccptr->cs_flags & CS_STEALTH) == 0)) {
 190                         if ((allflag == 0) || (allflag == 1)) {
 191                                 cprintf(":| %-25s <%s>:\n",
 192                                         (ccptr->fake_username[0]) ? ccptr->fake_username : ccptr->curr_user,
 193                                         roomname);
 194                         }
 195                 }
 196         }
 197
 198         if (allflag == 1) {
 199                 cprintf(":|\n:| Users not in chat:\n");
 200                 for (ccptr = ContextList; ccptr != NULL; ccptr = ccptr->next) {
 201
 202                         GenerateRoomDisplay(roomname, ccptr, CC);
 203                         if ((CC->user.axlevel < 6)
 204                         && (strlen(ccptr->fake_roomname)>0)) {
 205                                 strcpy(roomname, ccptr->fake_roomname);
 206                         }
 207
 208                         if (((ccptr->cs_flags & CS_CHAT) == 0)
 209                             && ((ccptr->cs_flags & CS_STEALTH) == 0)) {
 210                                 cprintf(":| %-25s <%s>:\n",
 211                                         (ccptr->fake_username[0]) ? ccptr->fake_username : ccptr->curr_user,
 212                                         roomname);
 213                         }
 214                 }
 215         }
 216         end_critical_section(S_SESSION_TABLE);
 217
 218         if (allflag == 2) {
 219                 if (count > 1) {
 220                         cprintf(":|There are %d users here.\n", count);
 221                 }
 222                 else {
 223                         cprintf(":|Note: you are the only one here.\n");
 224                 }
 225                 if (count_elsewhere > 0) {
 226                         cprintf(":|There are %d users chatting in other rooms.\n", count_elsewhere);
 227                 }
 228         }
 229
 230         cprintf(":|\n");
 231 }
 232
 233
 234 void cmd_chat(char *argbuf)
 235 {
 236         char cmdbuf[SIZ];
 237         char *un;
 238         char *strptr1;
 239         int MyLastMsg, ThisLastMsg;
 240         struct ChatLine *clptr;
 241         struct CitContext *t_context;
 242         int retval;
 243
 244         if (!(CC->logged_in)) {
 245                 cprintf("%d Not logged in.\n", ERROR + NOT_LOGGED_IN);
 246                 return;
 247         }
 248
 249         CC->cs_flags = CC->cs_flags | CS_CHAT;
 250         cprintf("%d Entering chat mode (type '/help' for available commands)\n",
 251                 START_CHAT_MODE);
 252         unbuffer_output();
 253
 254         MyLastMsg = ChatLastMsg;
 255
 256         if ((CC->cs_flags & CS_STEALTH) == 0) {
 257                 allwrite("<entering chat>", 0, NULL);
 258         }
 259         strcpy(cmdbuf, "");
 260
 261         do_chat_listing(2);
 262
 263         while (1) {
 264                 int ok_cmd;
 265                 int linelen;
 266
 267                 ok_cmd = 0;
 268                 linelen = strlen(cmdbuf);
 269                 if (linelen > 100) --linelen;   /* truncate too-long lines */
 270                 cmdbuf[linelen + 1] = 0;
 271
 272                 retval = client_read_to(&cmdbuf[linelen], 1, 2);
 273
 274                 if (retval < 0 || CC->kill_me) {        /* socket broken? */
 275                         if ((CC->cs_flags & CS_STEALTH) == 0) {
 276                                 allwrite("<disconnected>", 0, NULL);
 277                         }
 278                         return;
 279                 }
 280
 281                 /* if we have a complete line, do send processing */
 282                 if (strlen(cmdbuf) > 0)
 283                         if (cmdbuf[strlen(cmdbuf) - 1] == 10) {
 284                                 cmdbuf[strlen(cmdbuf) - 1] = 0;
 285                                 time(&CC->lastcmd);
 286                                 time(&CC->lastidle);
 287
 288                                 if ((!strcasecmp(cmdbuf, "exit"))
 289                                     || (!strcasecmp(cmdbuf, "/exit"))
 290                                     || (!strcasecmp(cmdbuf, "quit"))
 291                                     || (!strcasecmp(cmdbuf, "logout"))
 292                                     || (!strcasecmp(cmdbuf, "logoff"))
 293                                     || (!strcasecmp(cmdbuf, "/q"))
 294                                     || (!strcasecmp(cmdbuf, ".q"))
 295                                     || (!strcasecmp(cmdbuf, "/quit"))
 296                                     )
 297                                         strcpy(cmdbuf, "000");
 298
 299                                 if (!strcmp(cmdbuf, "000")) {
 300                                         if ((CC->cs_flags & CS_STEALTH) == 0) {
 301                                                 allwrite("<exiting chat>", 0, NULL);
 302                                         }
 303                                         sleep(1);
 304                                         cprintf("000\n");
 305                                         CC->cs_flags = CC->cs_flags - CS_CHAT;
 306                                         return;
 307                                 }
 308                                 if ((!strcasecmp(cmdbuf, "/help"))
 309                                     || (!strcasecmp(cmdbuf, "help"))
 310                                     || (!strcasecmp(cmdbuf, "/?"))
 311                                     || (!strcasecmp(cmdbuf, "?"))) {
 312                                         cprintf(":|\n");
 313                                         cprintf(":|Available commands: \n");
 314                                         cprintf(":|/help   (prints this message) \n");
 315                                         cprintf(":|/who    (list users currently in chat) \n");
 316                                         cprintf(":|/whobbs (list users in chat -and- elsewhere) \n");
 317                                         cprintf(":|/me     ('action' line, ala irc) \n");
 318                                         cprintf(":|/msg    (send private message, ala irc) \n");
 319                                         if (is_room_aide()) {
 320                                                 cprintf(":|/kick   (kick another user out of this room) \n");
 321                                         }
 322                                         cprintf(":|/quit   (exit from this chat) \n");
 323                                         cprintf(":|\n");
 324                                         ok_cmd = 1;
 325                                 }
 326                                 if (!strcasecmp(cmdbuf, "/who")) {
 327                                         do_chat_listing(0);
 328                                         ok_cmd = 1;
 329                                 }
 330                                 if (!strcasecmp(cmdbuf, "/whobbs")) {
 331                                         do_chat_listing(1);
 332                                         ok_cmd = 1;
 333                                 }
 334                                 if (!strncasecmp(cmdbuf, "/me ", 4)) {
 335                                         allwrite(&cmdbuf[4], 1, NULL);
 336                                         ok_cmd = 1;
 337                                 }
 338                                 if (!strncasecmp(cmdbuf, "/msg ", 5)) {
 339                                         ok_cmd = 1;
 340                                         strptr1 = &cmdbuf[5];
 341                                         if ((t_context = find_context(&strptr1))) {
 342                                                 allwrite(strptr1, 2, CC->curr_user);
 343                                                 if (strcasecmp(CC->curr_user, t_context->curr_user))
 344                                                         allwrite(strptr1, 2, t_context->curr_user);
 345                                         } else
 346                                                 cprintf(":|User not found.\n");
 347                                         cprintf("\n");
 348                                 }
 349                                 /* The /kick function is implemented by sending a specific
 350                                  * message to the kicked-out user's context.  When that message
 351                                  * is processed by the read loop, that context will exit.
 352                                  */
 353                                 if ( (!strncasecmp(cmdbuf, "/kick ", 6)) && (is_room_aide()) ) {
 354                                         ok_cmd = 1;
 355                                         strptr1 = &cmdbuf[6];
 356                                         strcat(strptr1, " ");
 357                                         if ((t_context = find_context(&strptr1))) {
 358                                                 if (strcasecmp(CC->curr_user, t_context->curr_user))
 359                                                         allwrite(strptr1, 3, t_context->curr_user);
 360                                         } else
 361                                                 cprintf(":|User not found.\n");
 362                                         cprintf("\n");
 363                                 }
 364                                 if ((cmdbuf[0] != '/') && (strlen(cmdbuf) > 0)) {
 365                                         ok_cmd = 1;
 366                                         allwrite(cmdbuf, 0, NULL);
 367                                 }
 368                                 if ((!ok_cmd) && (cmdbuf[0]) && (cmdbuf[0] != '\n'))
 369                                         cprintf(":|Command %s is not understood.\n", cmdbuf);
 370
 371                                 strcpy(cmdbuf, "");
 372
 373                         }
 374                 /* now check the queue for new incoming stuff */
 375
 376                 if (CC->fake_username[0])
 377                         un = CC->fake_username;
 378                 else
 379                         un = CC->curr_user;
 380                 if (ChatLastMsg > MyLastMsg) {
 381                         ThisLastMsg = ChatLastMsg;
 382                         for (clptr = ChatQueue; clptr != NULL; clptr = clptr->next) {
 383                                 if ((clptr->chat_seq > MyLastMsg) && ((!clptr->chat_username[0]) || (!strncasecmp(un, clptr->chat_username, 32)))) {
 384                                         if ((!clptr->chat_room[0]) || (!strncasecmp(CC->room.QRname, clptr->chat_room, ROOMNAMELEN))) {
 385                                                 /* Output new chat data */
 386                                                 cprintf("%s\n", clptr->chat_text);
 387
 388                                                 /* See if we've been force-quitted (kicked etc.) */
 389                                                 if (!strcmp(&clptr->chat_text[2], KICKEDMSG)) {
 390                                                         allwrite("<kicked out of this room>", 0, NULL);
 391                                                         cprintf("000\n");
 392                                                         CC->cs_flags = CC->cs_flags - CS_CHAT;
 393
 394                                                         /* Kick user out of room */
 395                                                         CtdlInvtKick(CC->user.fullname, 0);
 396
 397                                                         /* And return to the Lobby */
 398                                                         usergoto(config.c_baseroom, 0, 0, NULL, NULL);
 399                                                         return;
 400                                                 }
 401                                         }
 402                                 }
 403                         }
 404                         MyLastMsg = ThisLastMsg;
 405                 }
 406         }
 407 }
 408
 409
 410
 411 /*
 412  * Delete any remaining instant messages
 413  */
 414 void delete_instant_messages(void) {
 415         struct ExpressMessage *ptr;
 416
 417         begin_critical_section(S_SESSION_TABLE);
 418         while (CC->FirstExpressMessage != NULL) {
 419                 ptr = CC->FirstExpressMessage->next;
 420                 if (CC->FirstExpressMessage->text != NULL)
 421                         free(CC->FirstExpressMessage->text);
 422                 free(CC->FirstExpressMessage);
 423                 CC->FirstExpressMessage = ptr;
 424                 }
 425         end_critical_section(S_SESSION_TABLE);
 426         }
 427
 428
 429
 430
 431 /*
 432  * Poll for instant messages (OLD METHOD -- ***DEPRECATED ***)
 433  */
 434 void cmd_pexp(char *argbuf)
 435 {
 436         struct ExpressMessage *ptr, *holdptr;
 437
 438         if (CC->FirstExpressMessage == NULL) {
 439                 cprintf("%d No instant messages waiting.\n", ERROR + MESSAGE_NOT_FOUND);
 440                 return;
 441         }
 442         begin_critical_section(S_SESSION_TABLE);
 443         ptr = CC->FirstExpressMessage;
 444         CC->FirstExpressMessage = NULL;
 445         end_critical_section(S_SESSION_TABLE);
 446
 447         cprintf("%d Express msgs:\n", LISTING_FOLLOWS);
 448         while (ptr != NULL) {
 449                 if (ptr->flags && EM_BROADCAST)
 450                         cprintf("Broadcast message ");
 451                 else if (ptr->flags && EM_CHAT)
 452                         cprintf("Chat request ");
 453                 else if (ptr->flags && EM_GO_AWAY)
 454                         cprintf("Please logoff now, as requested ");
 455                 else
 456                         cprintf("Message ");
 457                 cprintf("from %s:\n", ptr->sender);
 458                 if (ptr->text != NULL)
 459                         memfmout(80, ptr->text, 0, "\n");
 460
 461                 holdptr = ptr->next;
 462                 if (ptr->text != NULL) free(ptr->text);
 463                 free(ptr);
 464                 ptr = holdptr;
 465         }
 466         cprintf("000\n");
 467 }
 468
 469
 470 /*
 471  * Get instant messages (new method)
 472  */
 473 void cmd_gexp(char *argbuf) {
 474         struct ExpressMessage *ptr;
 475
 476         if (CC->FirstExpressMessage == NULL) {
 477                 cprintf("%d No instant messages waiting.\n", ERROR + MESSAGE_NOT_FOUND);
 478                 return;
 479         }
 480
 481         begin_critical_section(S_SESSION_TABLE);
 482         ptr = CC->FirstExpressMessage;
 483         CC->FirstExpressMessage = CC->FirstExpressMessage->next;
 484         end_critical_section(S_SESSION_TABLE);
 485
 486         cprintf("%d %d|%ld|%d|%s|%s\n",
 487                 LISTING_FOLLOWS,
 488                 ((ptr->next != NULL) ? 1 : 0),          /* more msgs? */
 489                 (long)ptr->timestamp,                           /* time sent */
 490                 ptr->flags,                             /* flags */
 491                 ptr->sender,                            /* sender of msg */
 492                 config.c_nodename);                     /* static for now */
 493         if (ptr->text != NULL) {
 494                 memfmout(80, ptr->text, 0, "\n");
 495                 if (ptr->text[strlen(ptr->text)-1] != '\n') cprintf("\n");
 496                 free(ptr->text);
 497                 }
 498         cprintf("000\n");
 499         free(ptr);
 500 }
 501
 502 /*
 503  * Asynchronously deliver instant messages
 504  */
 505 void cmd_gexp_async(void) {
 506
 507         /* Only do this if the session can handle asynchronous protocol */
 508         if (CC->is_async == 0) return;
 509
 510         /* And don't do it if there's nothing to send. */
 511         if (CC->FirstExpressMessage == NULL) return;
 512
 513         cprintf("%d instant msg\n", ASYNC_MSG + ASYNC_GEXP);
 514 }
 515
 516 /*
 517  * Back end support function for send_instant_message() and company
 518  */
 519 void add_xmsg_to_context(struct CitContext *ccptr,
 520                         struct ExpressMessage *newmsg)
 521 {
 522         struct ExpressMessage *findend;
 523
 524         if (ccptr->FirstExpressMessage == NULL) {
 525                 ccptr->FirstExpressMessage = newmsg;
 526         }
 527         else {
 528                 findend = ccptr->FirstExpressMessage;
 529                 while (findend->next != NULL) {
 530                         findend = findend->next;
 531                 }
 532                 findend->next = newmsg;
 533         }
 534
 535         /* If the target context is a session which can handle asynchronous
 536          * messages, go ahead and set the flag for that.
 537          */
 538         if (ccptr->is_async) {
 539                 ccptr->async_waiting = 1;
 540                 if (ccptr->state == CON_IDLE) {
 541                         ccptr->state = CON_READY;
 542                 }
 543         }
 544 }
 545
 546
 547
 548
 549 /*
 550  * This is the back end to the instant message sending function.
 551  * Returns the number of users to which the message was sent.
 552  * Sending a zero-length message tests for recipients without sending messages.
 553  */
 554 int send_instant_message(char *lun, char *x_user, char *x_msg)
 555 {
 556         int message_sent = 0;           /* number of successful sends */
 557
 558         struct CitContext *ccptr;
 559         struct ExpressMessage *newmsg;
 560         char *un;
 561         size_t msglen = 0;
 562         int do_send = 0;                /* set to 1 to actually page, not
 563                                          * just check to see if we can.
 564                                          */
 565         struct savelist *sl = NULL;     /* list of rooms to save this page */
 566         struct savelist *sptr;
 567         struct CtdlMessage *logmsg;
 568         long msgnum;
 569
 570         if (strlen(x_msg) > 0) {
 571                 msglen = strlen(x_msg) + 4;
 572                 do_send = 1;
 573                 }
 574
 575         /* find the target user's context and append the message */
 576         begin_critical_section(S_SESSION_TABLE);
 577         for (ccptr = ContextList; ccptr != NULL; ccptr = ccptr->next) {
 578
 579                 if (ccptr->fake_username[0])    /* <bc> */
 580                         un = ccptr->fake_username;
 581                 else
 582                         un = ccptr->user.fullname;
 583
 584                 if ( ((!strcasecmp(un, x_user))
 585                     || (!strcasecmp(x_user, "broadcast")))
 586                     && ((ccptr->disable_exp == 0)
 587                     || (CC->user.axlevel >= 6)) ) {
 588                         if (do_send) {
 589                                 newmsg = (struct ExpressMessage *)
 590                                         malloc(sizeof (struct ExpressMessage));
 591                                 memset(newmsg, 0,
 592                                         sizeof (struct ExpressMessage));
 593                                 time(&(newmsg->timestamp));
 594                                 safestrncpy(newmsg->sender, lun,
 595                                             sizeof newmsg->sender);
 596                                 if (!strcasecmp(x_user, "broadcast"))
 597                                         newmsg->flags |= EM_BROADCAST;
 598                                 newmsg->text = strdup(x_msg);
 599
 600                                 add_xmsg_to_context(ccptr, newmsg);
 601
 602                                 /* and log it ... */
 603                                 if (ccptr != CC) {
 604                                         sptr = (struct savelist *)
 605                                                 malloc(sizeof(struct savelist));
 606                                         sptr->next = sl;
 607                                         MailboxName(sptr->roomname,
 608                                                     sizeof sptr->roomname,
 609                                                 &ccptr->user, PAGELOGROOM);
 610                                         sl = sptr;
 611                                 }
 612                         }
 613                         ++message_sent;
 614                 }
 615         }
 616         end_critical_section(S_SESSION_TABLE);
 617
 618         /* Log the page to disk if configured to do so  */
 619         if ( (do_send) && (message_sent) ) {
 620
 621                 logmsg = malloc(sizeof(struct CtdlMessage));
 622                 memset(logmsg, 0, sizeof(struct CtdlMessage));
 623                 logmsg->cm_magic = CTDLMESSAGE_MAGIC;
 624                 logmsg->cm_anon_type = MES_NORMAL;
 625                 logmsg->cm_format_type = 0;
 626                 logmsg->cm_fields['A'] = strdup(lun);
 627                 logmsg->cm_fields['N'] = strdup(NODENAME);
 628                 logmsg->cm_fields['O'] = strdup(PAGELOGROOM);
 629                 logmsg->cm_fields['R'] = strdup(x_user);
 630                 logmsg->cm_fields['M'] = strdup(x_msg);
 631
 632
 633                 /* Save a copy of the message in the sender's log room,
 634                  * creating the room if necessary.
 635                  */
 636                 create_room(PAGELOGROOM, 4, "", 0, 1, 0, VIEW_BBS);
 637                 msgnum = CtdlSubmitMsg(logmsg, NULL, NULL, NULL, PAGELOGROOM);
 638
 639                 /* Now save a copy in the global log room, if configured */
 640                 if (strlen(config.c_logpages) > 0) {
 641                         create_room(config.c_logpages, 3, "", 0, 1, 1, VIEW_BBS);
 642                         CtdlSaveMsgPointerInRoom(config.c_logpages, msgnum, 0);
 643                 }
 644
 645                 /* Save a copy in each recipient's log room, creating those
 646                  * rooms if necessary.  Note that we create as a type 5 room
 647                  * rather than 4, which indicates that it's a personal room
 648                  * but we've already supplied the namespace prefix.
 649                  */
 650                 while (sl != NULL) {
 651                         create_room(sl->roomname, 5, "", 0, 1, 1, VIEW_BBS);
 652                         CtdlSaveMsgPointerInRoom(sl->roomname, msgnum, 0);
 653                         sptr = sl->next;
 654                         free(sl);
 655                         sl = sptr;
 656                 }
 657
 658                 CtdlFreeMessage(logmsg);
 659         }
 660
 661         return (message_sent);
 662 }
 663
 664 /*
 665  * send instant messages  <bc>
 666  */
 667 void cmd_sexp(char *argbuf)
 668 {
 669         int message_sent = 0;
 670         char x_user[USERNAME_SIZE];
 671         char x_msg[1024];
 672         char *lun;              /* <bc> */
 673         char *x_big_msgbuf = NULL;
 674
 675         if ((!(CC->logged_in)) && (!(CC->internal_pgm))) {
 676                 cprintf("%d Not logged in.\n", ERROR + NOT_LOGGED_IN);
 677                 return;
 678         }
 679         if (CC->fake_username[0])
 680                 lun = CC->fake_username;
 681         else
 682                 lun = CC->user.fullname;
 683
 684         extract_token(x_user, argbuf, 0, '|', sizeof x_user);
 685         extract_token(x_msg, argbuf, 1, '|', sizeof x_msg);
 686
 687         if (!x_user[0]) {
 688                 cprintf("%d You were not previously paged.\n", ERROR + NO_SUCH_USER);
 689                 return;
 690         }
 691         if ((!strcasecmp(x_user, "broadcast")) && (CC->user.axlevel < 6)) {
 692                 cprintf("%d Higher access required to send a broadcast.\n",
 693                         ERROR + HIGHER_ACCESS_REQUIRED);
 694                 return;
 695         }
 696         /* This loop handles text-transfer pages */
 697         if (!strcmp(x_msg, "-")) {
 698                 message_sent = PerformXmsgHooks(lun, x_user, "");
 699                 if (message_sent == 0) {
 700                         if (getuser(NULL, x_user))
 701                                 cprintf("%d '%s' does not exist.\n",
 702                                                 ERROR + NO_SUCH_USER, x_user);
 703                         else
 704                                 cprintf("%d '%s' is not logged in "
 705                                                 "or is not accepting pages.\n",
 706                                                 ERROR + RESOURCE_NOT_OPEN, x_user);
 707                         return;
 708                 }
 709                 unbuffer_output();
 710                 cprintf("%d Transmit message (will deliver to %d users)\n",
 711                         SEND_LISTING, message_sent);
 712                 x_big_msgbuf = malloc(SIZ);
 713                 memset(x_big_msgbuf, 0, SIZ);
 714                 while (client_getln(x_msg, sizeof x_msg),
 715                       strcmp(x_msg, "000")) {
 716                         x_big_msgbuf = realloc(x_big_msgbuf,
 717                                strlen(x_big_msgbuf) + strlen(x_msg) + 4);
 718                         if (strlen(x_big_msgbuf) > 0)
 719                            if (x_big_msgbuf[strlen(x_big_msgbuf)] != '\n')
 720                                 strcat(x_big_msgbuf, "\n");
 721                         strcat(x_big_msgbuf, x_msg);
 722                 }
 723                 PerformXmsgHooks(lun, x_user, x_big_msgbuf);
 724                 free(x_big_msgbuf);
 725
 726                 /* This loop handles inline pages */
 727         } else {
 728                 message_sent = PerformXmsgHooks(lun, x_user, x_msg);
 729
 730                 if (message_sent > 0) {
 731                         if (strlen(x_msg) > 0)
 732                                 cprintf("%d Message sent", CIT_OK);
 733                         else
 734                                 cprintf("%d Ok to send message", CIT_OK);
 735                         if (message_sent > 1)
 736                                 cprintf(" to %d users", message_sent);
 737                         cprintf(".\n");
 738                 } else {
 739                         if (getuser(NULL, x_user))
 740                                 cprintf("%d '%s' does not exist.\n",
 741                                                 ERROR + NO_SUCH_USER, x_user);
 742                         else
 743                                 cprintf("%d '%s' is not logged in "
 744                                                 "or is not accepting pages.\n",
 745                                                 ERROR + RESOURCE_NOT_OPEN, x_user);
 746                 }
 747
 748
 749         }
 750 }
 751
 752
 753
 754 /*
 755  * Enter or exit paging-disabled mode
 756  */
 757 void cmd_dexp(char *argbuf)
 758 {
 759         int new_state;
 760
 761         if (CtdlAccessCheck(ac_logged_in)) return;
 762
 763         new_state = extract_int(argbuf, 0);
 764         if ((new_state == 0) || (new_state == 1)) {
 765                 CC->disable_exp = new_state;
 766         }
 767
 768         cprintf("%d %d\n", CIT_OK, CC->disable_exp);
 769 }
 770
 771
 772 /*
 773  * Request client termination
 774  */
 775 void cmd_reqt(char *argbuf) {
 776         struct CitContext *ccptr;
 777         int sessions = 0;
 778         int which_session;
 779         struct ExpressMessage *newmsg;
 780
 781         if (CtdlAccessCheck(ac_aide)) return;
 782         which_session = extract_int(argbuf, 0);
 783
 784         begin_critical_section(S_SESSION_TABLE);
 785         for (ccptr = ContextList; ccptr != NULL; ccptr = ccptr->next) {
 786                 if ((ccptr->cs_pid == which_session) || (which_session == 0)) {
 787
 788                         newmsg = (struct ExpressMessage *)
 789                                 malloc(sizeof (struct ExpressMessage));
 790                         memset(newmsg, 0,
 791                                 sizeof (struct ExpressMessage));
 792                         time(&(newmsg->timestamp));
 793                         safestrncpy(newmsg->sender, CC->user.fullname,
 794                                     sizeof newmsg->sender);
 795                         newmsg->flags |= EM_GO_AWAY;
 796                         newmsg->text = strdup("Automatic logoff requested.");
 797
 798                         add_xmsg_to_context(ccptr, newmsg);
 799                         ++sessions;
 800
 801                 }
 802         }
 803         end_critical_section(S_SESSION_TABLE);
 804         cprintf("%d Sent termination request to %d sessions.\n", CIT_OK, sessions);
 805 }
 806
 807
 808
 809 char *serv_chat_init(void)
 810 {
 811         CtdlRegisterProtoHook(cmd_chat, "CHAT", "Begin real-time chat");
 812         CtdlRegisterProtoHook(cmd_pexp, "PEXP", "Poll for instant messages");
 813         CtdlRegisterProtoHook(cmd_gexp, "GEXP", "Get instant messages");
 814         CtdlRegisterProtoHook(cmd_sexp, "SEXP", "Send an instant message");
 815         CtdlRegisterProtoHook(cmd_dexp, "DEXP", "Disable instant messages");
 816         CtdlRegisterProtoHook(cmd_reqt, "REQT", "Request client termination");
 817         CtdlRegisterSessionHook(cmd_gexp_async, EVT_ASYNC);
 818         CtdlRegisterSessionHook(delete_instant_messages, EVT_STOP);
 819         CtdlRegisterXmsgHook(send_instant_message, XMSG_PRI_LOCAL);
 820         return "$Id$";
 821 }
 822