citadel/modules/instmsg/serv_instmsg.c

   1 /*
   2  * This module handles instant messaging between users.
   3  *
   4  * Copyright (c) 1987-2012 by the citadel.org team
   5  *
   6  * This program is open source software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 3.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14 #include "sysdep.h"
  15 #include <stdlib.h>
  16 #include <unistd.h>
  17 #include <stdio.h>
  18 #include <fcntl.h>
  19 #include <signal.h>
  20 #include <pwd.h>
  21 #include <errno.h>
  22 #include <sys/types.h>
  23
  24 #if TIME_WITH_SYS_TIME
  25 # include <sys/time.h>
  26 # include <time.h>
  27 #else
  28 # if HAVE_SYS_TIME_H
  29 #  include <sys/time.h>
  30 # else
  31 #  include <time.h>
  32 # endif
  33 #endif
  34
  35 #include <sys/wait.h>
  36 #include <string.h>
  37 #include <limits.h>
  38 #include <libcitadel.h>
  39 #include "citadel.h"
  40 #include "server.h"
  41 #include "serv_instmsg.h"
  42 #include "citserver.h"
  43 #include "support.h"
  44 #include "config.h"
  45 #include "msgbase.h"
  46 #include "user_ops.h"
  47 #include "ctdl_module.h"
  48
  49 struct imlog {
  50         struct imlog *next;
  51         long usernums[2];
  52         char usernames[2][128];
  53         time_t lastmsg;
  54         int last_serial;
  55         StrBuf *conversation;
  56 };
  57
  58 struct imlog *imlist = NULL;
  59
  60 /*
  61  * This function handles the logging of instant messages to disk.
  62  */
  63 void log_instant_message(struct CitContext *me, struct CitContext *them, char *msgtext, int serial_number)
  64 {
  65         long usernums[2];
  66         long t;
  67         struct imlog *iptr = NULL;
  68         struct imlog *this_im = NULL;
  69
  70         memset(usernums, 0, sizeof usernums);
  71         usernums[0] = me->user.usernum;
  72         usernums[1] = them->user.usernum;
  73
  74         /* Always put the lower user number first, so we can use the array as a hash value which
  75          * represents a pair of users.  For a broadcast message one of the users will be 0.
  76          */
  77         if (usernums[0] > usernums[1]) {
  78                 t = usernums[0];
  79                 usernums[0] = usernums[1];
  80                 usernums[1] = t;
  81         }
  82
  83         begin_critical_section(S_IM_LOGS);
  84
  85         /* Look for an existing conversation in the hash table.
  86          * If not found, create a new one.
  87          */
  88
  89         this_im = NULL;
  90         for (iptr = imlist; iptr != NULL; iptr = iptr->next) {
  91                 if ((iptr->usernums[0] == usernums[0]) && (iptr->usernums[1] == usernums[1])) {
  92                         /* Existing conversation */
  93                         this_im = iptr;
  94                 }
  95         }
  96         if (this_im == NULL) {
  97                 /* New conversation */
  98                 this_im = malloc(sizeof(struct imlog));
  99                 memset(this_im, 0, sizeof (struct imlog));
 100                 this_im->usernums[0] = usernums[0];
 101                 this_im->usernums[1] = usernums[1];
 102                 /* usernames[] and usernums[] might not be in the same order.  This is not an error. */
 103                 if (me) {
 104                         safestrncpy(this_im->usernames[0], me->user.fullname, sizeof this_im->usernames[0]);
 105                 }
 106                 if (them) {
 107                         safestrncpy(this_im->usernames[1], them->user.fullname, sizeof this_im->usernames[1]);
 108                 }
 109                 this_im->conversation = NewStrBuf();
 110                 this_im->next = imlist;
 111                 imlist = this_im;
 112                 StrBufAppendBufPlain(this_im->conversation, HKEY(
 113                         "<html><body>\r\n"
 114                         ), 0);
 115         }
 116
 117
 118         /* Since it's possible for this function to get called more than once if a user is logged
 119          * in on multiple sessions, we use the message's serial number to keep track of whether
 120          * we've already logged it.
 121          */
 122         if (this_im->last_serial != serial_number)
 123         {
 124                 this_im->lastmsg = time(NULL);          /* Touch the timestamp so we know when to flush */
 125                 this_im->last_serial = serial_number;
 126                 StrBufAppendBufPlain(this_im->conversation, HKEY("<p><b>"), 0);
 127                 StrBufAppendBufPlain(this_im->conversation, me->user.fullname, -1, 0);
 128                 StrBufAppendBufPlain(this_im->conversation, HKEY(":</b> "), 0);
 129                 StrEscAppend(this_im->conversation, NULL, msgtext, 0, 0);
 130                 StrBufAppendBufPlain(this_im->conversation, HKEY("</p>\r\n"), 0);
 131         }
 132         end_critical_section(S_IM_LOGS);
 133 }
 134
 135
 136 /*
 137  * Delete any remaining instant messages
 138  */
 139 void delete_instant_messages(void) {
 140         struct ExpressMessage *ptr;
 141
 142         begin_critical_section(S_SESSION_TABLE);
 143         while (CC->FirstExpressMessage != NULL) {
 144                 ptr = CC->FirstExpressMessage->next;
 145                 if (CC->FirstExpressMessage->text != NULL)
 146                         free(CC->FirstExpressMessage->text);
 147                 free(CC->FirstExpressMessage);
 148                 CC->FirstExpressMessage = ptr;
 149         }
 150         end_critical_section(S_SESSION_TABLE);
 151 }
 152
 153
 154
 155 /*
 156  * Retrieve instant messages
 157  */
 158 void cmd_gexp(char *argbuf) {
 159         struct ExpressMessage *ptr;
 160
 161         if (CC->FirstExpressMessage == NULL) {
 162                 cprintf("%d No instant messages waiting.\n", ERROR + MESSAGE_NOT_FOUND);
 163                 return;
 164         }
 165
 166         begin_critical_section(S_SESSION_TABLE);
 167         ptr = CC->FirstExpressMessage;
 168         CC->FirstExpressMessage = CC->FirstExpressMessage->next;
 169         end_critical_section(S_SESSION_TABLE);
 170
 171         cprintf("%d %d|%ld|%d|%s|%s|%s\n",
 172                 LISTING_FOLLOWS,
 173                 ((ptr->next != NULL) ? 1 : 0),          /* more msgs? */
 174                 (long)ptr->timestamp,                   /* time sent */
 175                 ptr->flags,                             /* flags */
 176                 ptr->sender,                            /* sender of msg */
 177                 config.c_nodename,                      /* static for now (and possibly deprecated) */
 178                 ptr->sender_email                       /* email or jid of sender */
 179         );
 180
 181         if (ptr->text != NULL) {
 182                 memfmout(ptr->text, "\n");
 183                 free(ptr->text);
 184         }
 185
 186         cprintf("000\n");
 187         free(ptr);
 188 }
 189
 190 /*
 191  * Asynchronously deliver instant messages
 192  */
 193 void cmd_gexp_async(void) {
 194
 195         /* Only do this if the session can handle asynchronous protocol */
 196         if (CC->is_async == 0) return;
 197
 198         /* And don't do it if there's nothing to send. */
 199         if (CC->FirstExpressMessage == NULL) return;
 200
 201         cprintf("%d instant msg\n", ASYNC_MSG + ASYNC_GEXP);
 202 }
 203
 204 /*
 205  * Back end support function for send_instant_message() and company
 206  */
 207 void add_xmsg_to_context(struct CitContext *ccptr, struct ExpressMessage *newmsg)
 208 {
 209         struct ExpressMessage *findend;
 210
 211         if (ccptr->FirstExpressMessage == NULL) {
 212                 ccptr->FirstExpressMessage = newmsg;
 213         }
 214         else {
 215                 findend = ccptr->FirstExpressMessage;
 216                 while (findend->next != NULL) {
 217                         findend = findend->next;
 218                 }
 219                 findend->next = newmsg;
 220         }
 221
 222         /* If the target context is a session which can handle asynchronous
 223          * messages, go ahead and set the flag for that.
 224          */
 225         set_async_waiting(ccptr);
 226 }
 227
 228
 229
 230
 231 /*
 232  * This is the back end to the instant message sending function.
 233  * Returns the number of users to which the message was sent.
 234  * Sending a zero-length message tests for recipients without sending messages.
 235  */
 236 int send_instant_message(char *lun, char *lem, char *x_user, char *x_msg)
 237 {
 238         int message_sent = 0;           /* number of successful sends */
 239         struct CitContext *ccptr;
 240         struct ExpressMessage *newmsg = NULL;
 241         char *un;
 242         int do_send = 0;                /* 1 = send message; 0 = only check for valid recipient */
 243         static int serial_number = 0;   /* this keeps messages from getting logged twice */
 244
 245         if (strlen(x_msg) > 0) {
 246                 do_send = 1;
 247         }
 248
 249         /* find the target user's context and append the message */
 250         begin_critical_section(S_SESSION_TABLE);
 251         ++serial_number;
 252         for (ccptr = ContextList; ccptr != NULL; ccptr = ccptr->next) {
 253
 254                 if (ccptr->fake_username[0]) {
 255                         un = ccptr->fake_username;
 256                 }
 257                 else {
 258                         un = ccptr->user.fullname;
 259                 }
 260
 261                 if ( ((!strcasecmp(un, x_user))
 262                     || (!strcasecmp(x_user, "broadcast")))
 263                     && (ccptr->can_receive_im)
 264                     && ((ccptr->disable_exp == 0)
 265                     || (CC->user.axlevel >= AxAideU)) ) {
 266                         if (do_send) {
 267                                 newmsg = (struct ExpressMessage *) malloc(sizeof (struct ExpressMessage));
 268                                 memset(newmsg, 0, sizeof (struct ExpressMessage));
 269                                 time(&(newmsg->timestamp));
 270                                 safestrncpy(newmsg->sender, lun, sizeof newmsg->sender);
 271                                 safestrncpy(newmsg->sender_email, lem, sizeof newmsg->sender_email);
 272                                 if (!strcasecmp(x_user, "broadcast")) {
 273                                         newmsg->flags |= EM_BROADCAST;
 274                                 }
 275                                 newmsg->text = strdup(x_msg);
 276
 277                                 add_xmsg_to_context(ccptr, newmsg);
 278
 279                                 /* and log it ... */
 280                                 if (ccptr != CC) {
 281                                         log_instant_message(CC, ccptr, newmsg->text, serial_number);
 282                                 }
 283                         }
 284                         ++message_sent;
 285                 }
 286         }
 287         end_critical_section(S_SESSION_TABLE);
 288         return (message_sent);
 289 }
 290
 291 /*
 292  * send instant messages
 293  */
 294 void cmd_sexp(char *argbuf)
 295 {
 296         int message_sent = 0;
 297         char x_user[USERNAME_SIZE];
 298         char x_msg[1024];
 299         char *lun;
 300         char *lem;
 301         char *x_big_msgbuf = NULL;
 302
 303         if ((!(CC->logged_in)) && (!(CC->internal_pgm))) {
 304                 cprintf("%d Not logged in.\n", ERROR + NOT_LOGGED_IN);
 305                 return;
 306         }
 307         if (CC->fake_username[0])
 308                 lun = CC->fake_username;
 309         else
 310                 lun = CC->user.fullname;
 311
 312         lem = CC->cs_inet_email;
 313
 314         extract_token(x_user, argbuf, 0, '|', sizeof x_user);
 315         extract_token(x_msg, argbuf, 1, '|', sizeof x_msg);
 316
 317         if (!x_user[0]) {
 318                 cprintf("%d You were not previously paged.\n", ERROR + NO_SUCH_USER);
 319                 return;
 320         }
 321         if ((!strcasecmp(x_user, "broadcast")) && (CC->user.axlevel < AxAideU)) {
 322                 cprintf("%d Higher access required to send a broadcast.\n",
 323                         ERROR + HIGHER_ACCESS_REQUIRED);
 324                 return;
 325         }
 326         /* This loop handles text-transfer pages */
 327         if (!strcmp(x_msg, "-")) {
 328                 message_sent = PerformXmsgHooks(lun, lem, x_user, "");
 329                 if (message_sent == 0) {
 330                         if (CtdlGetUser(NULL, x_user))
 331                                 cprintf("%d '%s' does not exist.\n",
 332                                                 ERROR + NO_SUCH_USER, x_user);
 333                         else
 334                                 cprintf("%d '%s' is not logged in "
 335                                                 "or is not accepting pages.\n",
 336                                                 ERROR + RESOURCE_NOT_OPEN, x_user);
 337                         return;
 338                 }
 339                 unbuffer_output();
 340                 cprintf("%d Transmit message (will deliver to %d users)\n",
 341                         SEND_LISTING, message_sent);
 342                 x_big_msgbuf = malloc(SIZ);
 343                 memset(x_big_msgbuf, 0, SIZ);
 344                 while (client_getln(x_msg, sizeof x_msg) >= 0 && strcmp(x_msg, "000")) {
 345                         x_big_msgbuf = realloc(x_big_msgbuf,
 346                                strlen(x_big_msgbuf) + strlen(x_msg) + 4);
 347                         if (!IsEmptyStr(x_big_msgbuf))
 348                            if (x_big_msgbuf[strlen(x_big_msgbuf)] != '\n')
 349                                 strcat(x_big_msgbuf, "\n");
 350                         strcat(x_big_msgbuf, x_msg);
 351                 }
 352                 PerformXmsgHooks(lun, lem, x_user, x_big_msgbuf);
 353                 free(x_big_msgbuf);
 354
 355                 /* This loop handles inline pages */
 356         } else {
 357                 message_sent = PerformXmsgHooks(lun, lem, x_user, x_msg);
 358
 359                 if (message_sent > 0) {
 360                         if (!IsEmptyStr(x_msg))
 361                                 cprintf("%d Message sent", CIT_OK);
 362                         else
 363                                 cprintf("%d Ok to send message", CIT_OK);
 364                         if (message_sent > 1)
 365                                 cprintf(" to %d users", message_sent);
 366                         cprintf(".\n");
 367                 } else {
 368                         if (CtdlGetUser(NULL, x_user))
 369                                 cprintf("%d '%s' does not exist.\n",
 370                                                 ERROR + NO_SUCH_USER, x_user);
 371                         else
 372                                 cprintf("%d '%s' is not logged in "
 373                                                 "or is not accepting pages.\n",
 374                                                 ERROR + RESOURCE_NOT_OPEN, x_user);
 375                 }
 376
 377
 378         }
 379 }
 380
 381
 382
 383 /*
 384  * Enter or exit paging-disabled mode
 385  */
 386 void cmd_dexp(char *argbuf)
 387 {
 388         int new_state;
 389
 390         if (CtdlAccessCheck(ac_logged_in)) return;
 391
 392         new_state = extract_int(argbuf, 0);
 393         if ((new_state == 0) || (new_state == 1)) {
 394                 CC->disable_exp = new_state;
 395         }
 396
 397         cprintf("%d %d\n", CIT_OK, CC->disable_exp);
 398 }
 399
 400
 401 /*
 402  * Request client termination
 403  */
 404 void cmd_reqt(char *argbuf) {
 405         struct CitContext *ccptr;
 406         int sessions = 0;
 407         int which_session;
 408         struct ExpressMessage *newmsg;
 409
 410         if (CtdlAccessCheck(ac_aide)) return;
 411         which_session = extract_int(argbuf, 0);
 412
 413         begin_critical_section(S_SESSION_TABLE);
 414         for (ccptr = ContextList; ccptr != NULL; ccptr = ccptr->next) {
 415                 if ((ccptr->cs_pid == which_session) || (which_session == 0)) {
 416
 417                         newmsg = (struct ExpressMessage *)
 418                                 malloc(sizeof (struct ExpressMessage));
 419                         memset(newmsg, 0,
 420                                 sizeof (struct ExpressMessage));
 421                         time(&(newmsg->timestamp));
 422                         safestrncpy(newmsg->sender, CC->user.fullname,
 423                                     sizeof newmsg->sender);
 424                         newmsg->flags |= EM_GO_AWAY;
 425                         newmsg->text = strdup("Automatic logoff requested.");
 426
 427                         add_xmsg_to_context(ccptr, newmsg);
 428                         ++sessions;
 429
 430                 }
 431         }
 432         end_critical_section(S_SESSION_TABLE);
 433         cprintf("%d Sent termination request to %d sessions.\n", CIT_OK, sessions);
 434 }
 435
 436
 437 /*
 438  * This is the back end for flush_conversations_to_disk()
 439  * At this point we've isolated a single conversation (struct imlog)
 440  * and are ready to write it to disk.
 441  */
 442 void flush_individual_conversation(struct imlog *im) {
 443         struct CtdlMessage *msg;
 444         long msgnum = 0;
 445         char roomname[ROOMNAMELEN];
 446         StrBuf *MsgBuf, *FullMsgBuf;
 447
 448         StrBufAppendBufPlain(im->conversation, HKEY(
 449                 "</body>\r\n"
 450                 "</html>\r\n"
 451                 ), 0
 452         );
 453
 454         MsgBuf = StrBufRFC2047encodeMessage(im->conversation);
 455         FlushStrBuf(im->conversation);
 456         FullMsgBuf = NewStrBufPlain(NULL, StrLength(im->conversation) + 100);
 457
 458         StrBufAppendBufPlain(FullMsgBuf, HKEY(
 459                         "Content-type: text/html; charset=UTF-8\r\n"
 460                         "Content-Transfer-Encoding: quoted-printable\r\n"
 461                         "\r\n"
 462                         ), 0);
 463         StrBufAppendBuf (FullMsgBuf, MsgBuf, 0);
 464         FreeStrBuf(&MsgBuf);
 465
 466         msg = malloc(sizeof(struct CtdlMessage));
 467         memset(msg, 0, sizeof(struct CtdlMessage));
 468         msg->cm_magic = CTDLMESSAGE_MAGIC;
 469         msg->cm_anon_type = MES_NORMAL;
 470         msg->cm_format_type = FMT_RFC822;
 471         if (!IsEmptyStr(im->usernames[0])) {
 472                 CM_SetField(msg, eAuthor, im->usernames[0], strlen(im->usernames[0]));
 473         } else {
 474                 CM_SetField(msg, eAuthor, HKEY("Citadel"));
 475         }
 476         if (!IsEmptyStr(im->usernames[1])) {
 477                 CM_SetField(msg, eRecipient, im->usernames[1], strlen(im->usernames[1]));
 478         }
 479
 480         CM_SetField(msg, eOriginalRoom, HKEY(PAGELOGROOM));
 481         CM_SetField(msg, eNodeName, CFG_KEY(c_nodename));
 482         CM_SetAsFieldSB(msg, eMesageText, &FullMsgBuf); /* we own this memory now */
 483
 484         /* Start with usernums[1] because it's guaranteed to be higher than usernums[0],
 485          * so if there's only one party, usernums[0] will be zero but usernums[1] won't.
 486          * Create the room if necessary.  Note that we create as a type 5 room rather
 487          * than 4, which indicates that it's a personal room but we've already supplied
 488          * the namespace prefix.
 489          *
 490          * In the unlikely event that usernums[1] is zero, a room with an invalid namespace
 491          * prefix will be created.  That's ok because the auto-purger will clean it up later.
 492          */
 493         snprintf(roomname, sizeof roomname, "%010ld.%s", im->usernums[1], PAGELOGROOM);
 494         CtdlCreateRoom(roomname, 5, "", 0, 1, 1, VIEW_BBS);
 495         msgnum = CtdlSubmitMsg(msg, NULL, roomname, 0);
 496         CM_Free(msg);
 497
 498         /* If there is a valid user number in usernums[0], save a copy for them too. */
 499         if (im->usernums[0] > 0) {
 500                 snprintf(roomname, sizeof roomname, "%010ld.%s", im->usernums[0], PAGELOGROOM);
 501                 CtdlCreateRoom(roomname, 5, "", 0, 1, 1, VIEW_BBS);
 502                 CtdlSaveMsgPointerInRoom(roomname, msgnum, 0, NULL);
 503         }
 504
 505         /* Finally, if we're logging instant messages globally, do that now. */
 506         if (!IsEmptyStr(config.c_logpages)) {
 507                 CtdlCreateRoom(config.c_logpages, 3, "", 0, 1, 1, VIEW_BBS);
 508                 CtdlSaveMsgPointerInRoom(config.c_logpages, msgnum, 0, NULL);
 509         }
 510
 511 }
 512
 513 /*
 514  * Locate instant message conversations which have gone idle
 515  * (or, if the server is shutting down, locate *all* conversations)
 516  * and flush them to disk (in the participants' log rooms, etc.)
 517  */
 518 void flush_conversations_to_disk(time_t if_older_than) {
 519
 520         struct imlog *flush_these = NULL;
 521         struct imlog *dont_flush_these = NULL;
 522         struct imlog *imptr = NULL;
 523         struct CitContext *nptr;
 524         int nContexts, i;
 525
 526         nptr = CtdlGetContextArray(&nContexts) ;        /* Make a copy of the current wholist */
 527
 528         begin_critical_section(S_IM_LOGS);
 529         while (imlist)
 530         {
 531                 imptr = imlist;
 532                 imlist = imlist->next;
 533
 534                 /* For a two party conversation, if one party has logged out, force flush. */
 535                 if (nptr) {
 536                         int user0_is_still_online = 0;
 537                         int user1_is_still_online = 0;
 538                         for (i=0; i<nContexts; i++)  {
 539                                 if (nptr[i].user.usernum == imptr->usernums[0]) ++user0_is_still_online;
 540                                 if (nptr[i].user.usernum == imptr->usernums[1]) ++user1_is_still_online;
 541                         }
 542                         if (imptr->usernums[0] != imptr->usernums[1]) {         /* two party conversation */
 543                                 if ((!user0_is_still_online) || (!user1_is_still_online)) {
 544                                         imptr->lastmsg = 0L;    /* force flush */
 545                                 }
 546                         }
 547                         else {          /* one party conversation (yes, people do IM themselves) */
 548                                 if (!user0_is_still_online) {
 549                                         imptr->lastmsg = 0L;    /* force flush */
 550                                 }
 551                         }
 552                 }
 553
 554                 /* Now test this conversation to see if it qualifies for flushing. */
 555                 if ((time(NULL) - imptr->lastmsg) > if_older_than)
 556                 {
 557                         /* This conversation qualifies.  Move it to the list of ones to flush. */
 558                         imptr->next = flush_these;
 559                         flush_these = imptr;
 560                 }
 561                 else  {
 562                         /* Move it to the list of ones not to flush. */
 563                         imptr->next = dont_flush_these;
 564                         dont_flush_these = imptr;
 565                 }
 566         }
 567         imlist = dont_flush_these;
 568         end_critical_section(S_IM_LOGS);
 569         free(nptr);
 570
 571         /* We are now outside of the critical section, and we are the only thread holding a
 572          * pointer to a linked list of conversations to be flushed to disk.
 573          */
 574         while (flush_these) {
 575
 576                 flush_individual_conversation(flush_these);     /* This will free the string buffer */
 577                 imptr = flush_these;
 578                 flush_these = flush_these->next;
 579                 free(imptr);
 580         }
 581 }
 582
 583
 584
 585 void instmsg_timer(void) {
 586         flush_conversations_to_disk(300);       /* Anything that hasn't peeped in more than 5 minutes */
 587 }
 588
 589 void instmsg_shutdown(void) {
 590         flush_conversations_to_disk(0);         /* Get it ALL onto disk NOW. */
 591 }
 592
 593 CTDL_MODULE_INIT(instmsg)
 594 {
 595         if (!threading)
 596         {
 597                 CtdlRegisterProtoHook(cmd_gexp, "GEXP", "Get instant messages");
 598                 CtdlRegisterProtoHook(cmd_sexp, "SEXP", "Send an instant message");
 599                 CtdlRegisterProtoHook(cmd_dexp, "DEXP", "Disable instant messages");
 600                 CtdlRegisterProtoHook(cmd_reqt, "REQT", "Request client termination");
 601                 CtdlRegisterSessionHook(cmd_gexp_async, EVT_ASYNC, PRIO_ASYNC + 1);
 602                 CtdlRegisterSessionHook(delete_instant_messages, EVT_STOP, PRIO_STOP + 1);
 603                 CtdlRegisterXmsgHook(send_instant_message, XMSG_PRI_LOCAL);
 604                 CtdlRegisterSessionHook(instmsg_timer, EVT_TIMER, PRIO_CLEANUP + 400);
 605                 CtdlRegisterSessionHook(instmsg_shutdown, EVT_SHUTDOWN, PRIO_SHUTDOWN + 10);
 606         }
 607
 608         /* return our module name for the log */
 609         return "instmsg";
 610 }