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