citadel/modules/network/serv_network.c

   1 /*
   2  * This module handles shared rooms, inter-Citadel mail, and outbound
   3  * mailing list processing.
   4  *
   5  * Copyright (c) 2000-2012 by the citadel.org team
   6  *
   7  *  This program is open source software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License, version 3.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  * ** NOTE **   A word on the S_NETCONFIGS semaphore:
  16  * This is a fairly high-level type of critical section.  It ensures that no
  17  * two threads work on the netconfigs files at the same time.  Since we do
  18  * so many things inside these, here are the rules:
  19  *  1. begin_critical_section(S_NETCONFIGS) *before* begin_ any others.
  20  *  2. Do *not* perform any I/O with the client during these sections.
  21  *
  22  */
  23
  24 /*
  25  * Duration of time (in seconds) after which pending list subscribe/unsubscribe
  26  * requests that have not been confirmed will be deleted.
  27  */
  28 #define EXP     259200  /* three days */
  29
  30 #include "sysdep.h"
  31 #include <stdlib.h>
  32 #include <unistd.h>
  33 #include <stdio.h>
  34 #include <fcntl.h>
  35 #include <ctype.h>
  36 #include <signal.h>
  37 #include <pwd.h>
  38 #include <errno.h>
  39 #include <sys/stat.h>
  40 #include <sys/types.h>
  41 #include <dirent.h>
  42 #if TIME_WITH_SYS_TIME
  43 # include <sys/time.h>
  44 # include <time.h>
  45 #else
  46 # if HAVE_SYS_TIME_H
  47 #  include <sys/time.h>
  48 # else
  49 #  include <time.h>
  50 # endif
  51 #endif
  52 #ifdef HAVE_SYSCALL_H
  53 # include <syscall.h>
  54 #else
  55 # if HAVE_SYS_SYSCALL_H
  56 #  include <sys/syscall.h>
  57 # endif
  58 #endif
  59
  60 #include <sys/wait.h>
  61 #include <string.h>
  62 #include <limits.h>
  63 #include <libcitadel.h>
  64 #include "citadel.h"
  65 #include "server.h"
  66 #include "citserver.h"
  67 #include "support.h"
  68 #include "config.h"
  69 #include "user_ops.h"
  70 #include "database.h"
  71 #include "msgbase.h"
  72 #include "internet_addressing.h"
  73 #include "serv_network.h"
  74 #include "clientsocket.h"
  75 #include "citadel_dirs.h"
  76 #include "threads.h"
  77 #include "context.h"
  78 #include "ctdl_module.h"
  79 #include "netspool.h"
  80 #include "netmail.h"
  81
  82 int NetQDebugEnabled = 0;
  83 struct CitContext networker_spool_CC;
  84
  85 /* comes from lookup3.c from libcitadel... */
  86 extern uint32_t hashlittle( const void *key, size_t length, uint32_t initval);
  87
  88 typedef struct __roomlists {
  89         RoomProcList *rplist;
  90 }roomlists;
  91 /*
  92  * When we do network processing, it's accomplished in two passes; one to
  93  * gather a list of rooms and one to actually do them.  It's ok that rplist
  94  * is global; we have a mutex that keeps it safe.
  95  */
  96 struct RoomProcList *rplist = NULL;
  97
  98
  99
 100 /*
 101  * Check the use table.  This is a list of messages which have recently
 102  * arrived on the system.  It is maintained and queried to prevent the same
 103  * message from being entered into the database multiple times if it happens
 104  * to arrive multiple times by accident.
 105  */
 106 int network_usetable(struct CtdlMessage *msg)
 107 {
 108         StrBuf *msgid;
 109         struct CitContext *CCC = CC;
 110         time_t now;
 111
 112         /* Bail out if we can't generate a message ID */
 113         if ((msg == NULL) || CM_IsEmpty(msg, emessageId))
 114         {
 115                 return(0);
 116         }
 117
 118         /* Generate the message ID */
 119         msgid = NewStrBufPlain(CM_KEY(msg, emessageId));
 120         if (haschar(ChrPtr(msgid), '@') == 0) {
 121                 StrBufAppendBufPlain(msgid, HKEY("@"), 0);
 122                 if (!CM_IsEmpty(msg, eNodeName)) {
 123                         StrBufAppendBufPlain(msgid, CM_KEY(msg, eNodeName), 0);
 124                 }
 125                 else {
 126                         FreeStrBuf(&msgid);
 127                         return(0);
 128                 }
 129         }
 130         now = time(NULL);
 131         if (CheckIfAlreadySeen("Networker Import",
 132                                msgid,
 133                                now, 0,
 134                                eCheckUpdate,
 135                                CCC->cs_pid, 0) != 0)
 136         {
 137                 FreeStrBuf(&msgid);
 138                 return(1);
 139         }
 140         FreeStrBuf(&msgid);
 141
 142         return(0);
 143 }
 144
 145
 146
 147 /*
 148  * Send the *entire* contents of the current room to one specific network node,
 149  * ignoring anything we know about which messages have already undergone
 150  * network processing.  This can be used to bring a new node into sync.
 151  */
 152 int network_sync_to(char *target_node, long len)
 153 {
 154         struct CitContext *CCC = CC;
 155         OneRoomNetCfg OneRNCFG;
 156         OneRoomNetCfg *pRNCFG;
 157         const RoomNetCfgLine *pCfgLine;
 158         SpoolControl sc;
 159         int num_spooled = 0;
 160
 161         /* Grab the configuration line we're looking for */
 162         begin_critical_section(S_NETCONFIGS);
 163         pRNCFG = CtdlGetNetCfgForRoom(CCC->room.QRnumber);
 164         if ((pRNCFG == NULL) ||
 165             (pRNCFG->NetConfigs[ignet_push_share] == NULL))
 166         {
 167                 return -1;
 168         }
 169
 170         pCfgLine = pRNCFG->NetConfigs[ignet_push_share];
 171         while (pCfgLine != NULL)
 172         {
 173                 if (!strcmp(ChrPtr(pCfgLine->Value[0]), target_node))
 174                         break;
 175                 pCfgLine = pCfgLine->next;
 176         }
 177         if (pCfgLine == NULL)
 178         {
 179                 return -1;
 180         }
 181
 182         memset(&sc, 0, sizeof(SpoolControl));
 183         memset(&OneRNCFG, 0, sizeof(OneRoomNetCfg));
 184         sc.RNCfg = &OneRNCFG;
 185         sc.RNCfg->NetConfigs[ignet_push_share] = DuplicateOneGenericCfgLine(pCfgLine);
 186         sc.Users[ignet_push_share] = NewStrBufPlain(NULL,
 187                                                     StrLength(pCfgLine->Value[0]) +
 188                                                     StrLength(pCfgLine->Value[1]) + 10);
 189         StrBufAppendBuf(sc.Users[ignet_push_share],
 190                         pCfgLine->Value[0],
 191                         0);
 192         StrBufAppendBufPlain(sc.Users[ignet_push_share],
 193                              HKEY(","),
 194                              0);
 195
 196         StrBufAppendBuf(sc.Users[ignet_push_share],
 197                         pCfgLine->Value[1],
 198                         0);
 199         CalcListID(&sc);
 200
 201         end_critical_section(S_NETCONFIGS);
 202
 203         sc.working_ignetcfg = CtdlLoadIgNetCfg();
 204         sc.the_netmap = CtdlReadNetworkMap();
 205
 206         /* Send ALL messages */
 207         num_spooled = CtdlForEachMessage(MSGS_ALL, 0L, NULL, NULL, NULL,
 208                 network_spool_msg, &sc);
 209
 210         /* Concise cleanup because we know there's only one node in the sc */
 211         DeleteGenericCfgLine(NULL/*TODO*/, &sc.RNCfg->NetConfigs[ignet_push_share]);
 212
 213         DeleteHash(&sc.working_ignetcfg);
 214         DeleteHash(&sc.the_netmap);
 215         free_spoolcontrol_struct_members(&sc);
 216
 217         QN_syslog(LOG_NOTICE, "Synchronized %d messages to <%s>\n",
 218                   num_spooled, target_node);
 219         return(num_spooled);
 220 }
 221
 222
 223 /*
 224  * Implements the NSYN command
 225  */
 226 void cmd_nsyn(char *argbuf) {
 227         int num_spooled;
 228         long len;
 229         char target_node[256];
 230
 231         if (CtdlAccessCheck(ac_aide)) return;
 232
 233         len = extract_token(target_node, argbuf, 0, '|', sizeof target_node);
 234         num_spooled = network_sync_to(target_node, len);
 235         if (num_spooled >= 0) {
 236                 cprintf("%d Spooled %d messages.\n", CIT_OK, num_spooled);
 237         }
 238         else {
 239                 cprintf("%d No such room/node share exists.\n",
 240                         ERROR + ROOM_NOT_FOUND);
 241         }
 242 }
 243
 244 RoomProcList *CreateRoomProcListEntry(struct ctdlroom *qrbuf, OneRoomNetCfg *OneRNCFG)
 245 {
 246         int i;
 247         struct RoomProcList *ptr;
 248
 249         ptr = (struct RoomProcList *) malloc(sizeof (struct RoomProcList));
 250         if (ptr == NULL) return NULL;
 251
 252         ptr->namelen = strlen(qrbuf->QRname);
 253         if (ptr->namelen > ROOMNAMELEN)
 254                 ptr->namelen = ROOMNAMELEN - 1;
 255
 256         memcpy (ptr->name, qrbuf->QRname, ptr->namelen);
 257         ptr->name[ptr->namelen] = '\0';
 258         ptr->QRNum = qrbuf->QRnumber;
 259
 260         for (i = 0; i < ptr->namelen; i++)
 261         {
 262                 ptr->lcname[i] = tolower(ptr->name[i]);
 263         }
 264
 265         ptr->lcname[ptr->namelen] = '\0';
 266         ptr->key = hashlittle(ptr->lcname, ptr->namelen, 9872345);
 267         ptr->lastsent = OneRNCFG->lastsent;
 268         ptr->OneRNCfg = OneRNCFG;
 269         return ptr;
 270 }
 271
 272 /*
 273  * Batch up and send all outbound traffic from the current room
 274  */
 275 void network_queue_interesting_rooms(struct ctdlroom *qrbuf, void *data, OneRoomNetCfg *OneRNCfg)
 276 {
 277         struct RoomProcList *ptr;
 278         roomlists *RP = (roomlists*) data;
 279
 280         if (!HaveSpoolConfig(OneRNCfg))
 281                 return;
 282
 283         ptr = CreateRoomProcListEntry(qrbuf, OneRNCfg);
 284
 285         if (ptr != NULL)
 286         {
 287                 ptr->next = RP->rplist;
 288                 RP->rplist = ptr;
 289         }
 290 }
 291
 292 /*
 293  * Batch up and send all outbound traffic from the current room
 294  */
 295 int network_room_handler (struct ctdlroom *qrbuf)
 296 {
 297         struct RoomProcList *ptr;
 298         OneRoomNetCfg* RNCfg;
 299
 300         if (qrbuf->QRdefaultview == VIEW_QUEUE)
 301                 return 1;
 302
 303         RNCfg = CtdlGetNetCfgForRoom(qrbuf->QRnumber);
 304         if (RNCfg == NULL)
 305                 return 1;
 306
 307         if (!HaveSpoolConfig(RNCfg))
 308                 return 1;
 309
 310         ptr = CreateRoomProcListEntry(qrbuf, RNCfg);
 311         if (ptr == NULL)
 312                 return 1;
 313
 314         ptr->OneRNCfg = NULL;
 315         begin_critical_section(S_RPLIST);
 316         ptr->next = rplist;
 317         rplist = ptr;
 318         end_critical_section(S_RPLIST);
 319         return 1;
 320 }
 321
 322 void destroy_network_queue_room(RoomProcList *rplist)
 323 {
 324         struct RoomProcList *cur, *p;
 325
 326         cur = rplist;
 327         while (cur != NULL)
 328         {
 329                 p = cur->next;
 330                 free (cur);
 331                 cur = p;
 332         }
 333 }
 334
 335 void destroy_network_queue_room_locked (void)
 336 {
 337         begin_critical_section(S_RPLIST);
 338         destroy_network_queue_room(rplist);
 339         end_critical_section(S_RPLIST);
 340 }
 341
 342
 343
 344 /*
 345  * Bounce a message back to the sender
 346  */
 347 void network_bounce(struct CtdlMessage *msg, char *reason)
 348 {
 349         struct CitContext *CCC = CC;
 350         char buf[SIZ];
 351         char bouncesource[SIZ];
 352         char recipient[SIZ];
 353         recptypes *valid = NULL;
 354         char force_room[ROOMNAMELEN];
 355         static int serialnum = 0;
 356         long len;
 357
 358         QNM_syslog(LOG_DEBUG, "entering network_bounce()\n");
 359
 360         if (msg == NULL) return;
 361
 362         snprintf(bouncesource, sizeof bouncesource, "%s@%s", BOUNCESOURCE, config.c_nodename);
 363
 364         /*
 365          * Give it a fresh message ID
 366          */
 367         len = snprintf(buf, sizeof(buf),
 368                        "%ld.%04lx.%04x@%s",
 369                        (long)time(NULL),
 370                        (long)getpid(),
 371                        ++serialnum,
 372                        config.c_fqdn);
 373
 374         CM_SetField(msg, emessageId, buf, len);
 375
 376         /*
 377          * FIXME ... right now we're just sending a bounce; we really want to
 378          * include the text of the bounced message.
 379          */
 380         CM_SetField(msg, eMesageText, reason, strlen(reason));
 381         msg->cm_format_type = 0;
 382
 383         /*
 384          * Turn the message around
 385          */
 386         CM_FlushField(msg, eRecipient);
 387         CM_FlushField(msg, eDestination);
 388
 389         len = snprintf(recipient, sizeof(recipient), "%s@%s",
 390                        msg->cm_fields[eAuthor],
 391                        msg->cm_fields[eNodeName]);
 392
 393         CM_SetField(msg, eAuthor, HKEY(BOUNCESOURCE));
 394         CM_SetField(msg, eNodeName, CFG_KEY(c_nodename));
 395         CM_SetField(msg, eMsgSubject, HKEY("Delivery Status Notification (Failure)"));
 396
 397         Netmap_AddMe(msg, HKEY("unknown_user"));
 398
 399         /* Now submit the message */
 400         valid = validate_recipients(recipient, NULL, 0);
 401         if (valid != NULL) if (valid->num_error != 0) {
 402                 free_recipients(valid);
 403                 valid = NULL;
 404         }
 405         if ( (valid == NULL) || (!strcasecmp(recipient, bouncesource)) ) {
 406                 strcpy(force_room, config.c_aideroom);
 407         }
 408         else {
 409                 strcpy(force_room, "");
 410         }
 411         if ( (valid == NULL) && IsEmptyStr(force_room) ) {
 412                 strcpy(force_room, config.c_aideroom);
 413         }
 414         CtdlSubmitMsg(msg, valid, force_room, 0);
 415
 416         /* Clean up */
 417         if (valid != NULL) free_recipients(valid);
 418         CM_Free(msg);
 419         QNM_syslog(LOG_DEBUG, "leaving network_bounce()\n");
 420 }
 421
 422
 423
 424 /*
 425  * network_do_queue()
 426  *
 427  * Run through the rooms doing various types of network stuff.
 428  */
 429 void network_do_queue(void)
 430 {
 431         struct CitContext *CCC = CC;
 432         static time_t last_run = 0L;
 433         int full_processing = 1;
 434         HashList *working_ignetcfg;
 435         HashList *the_netmap = NULL;
 436         int netmap_changed = 0;
 437         roomlists RL;
 438         SpoolControl *sc = NULL;
 439         SpoolControl *pSC;
 440
 441         /*
 442          * Run the full set of processing tasks no more frequently
 443          * than once every n seconds
 444          */
 445         if ( (time(NULL) - last_run) < config.c_net_freq ) {
 446                 full_processing = 0;
 447                 syslog(LOG_DEBUG, "Network full processing in %ld seconds.\n",
 448                        config.c_net_freq - (time(NULL)- last_run)
 449                 );
 450         }
 451
 452         become_session(&networker_spool_CC);
 453         begin_critical_section(S_RPLIST);
 454         RL.rplist = rplist;
 455         rplist = NULL;
 456         end_critical_section(S_RPLIST);
 457 ///TODO hm, check whether we have a config at all here?
 458         /* Load the IGnet Configuration into memory */
 459         working_ignetcfg = CtdlLoadIgNetCfg();
 460
 461         /*
 462          * Load the network map and filter list into memory.
 463          */
 464         if (!server_shutting_down)
 465                 the_netmap = CtdlReadNetworkMap();
 466 #if 0
 467         /* filterlist isn't supported anymore
 468         if (!server_shutting_down)
 469                 load_network_filter_list();
 470         */
 471 #endif
 472
 473         /*
 474          * Go ahead and run the queue
 475          */
 476         if (full_processing && !server_shutting_down) {
 477                 QNM_syslog(LOG_DEBUG, "network: loading outbound queue");
 478                 CtdlForEachNetCfgRoom(network_queue_interesting_rooms, &RL, maxRoomNetCfg);
 479         }
 480
 481         if ((RL.rplist != NULL) && (!server_shutting_down)) {
 482                 RoomProcList *ptr, *cmp;
 483                 ptr = RL.rplist;
 484                 QNM_syslog(LOG_DEBUG, "network: running outbound queue");
 485                 while (ptr != NULL && !server_shutting_down) {
 486
 487                         cmp = ptr->next;
 488                         /* filter duplicates from the list... */
 489                         while (cmp != NULL) {
 490                                 if ((cmp->namelen > 0) &&
 491                                     (cmp->key == ptr->key) &&
 492                                     (cmp->namelen == ptr->namelen) &&
 493                                     (strcmp(cmp->lcname, ptr->lcname) == 0))
 494                                 {
 495                                         cmp->namelen = 0;
 496                                 }
 497                                 cmp = cmp->next;
 498                         }
 499
 500                         if (ptr->namelen > 0) {
 501                                 InspectQueuedRoom(&sc,
 502                                                   ptr,
 503                                                   working_ignetcfg,
 504                                                   the_netmap);
 505                         }
 506                         ptr = ptr->next;
 507                 }
 508         }
 509
 510
 511         pSC = sc;
 512         while (pSC != NULL)
 513         {
 514                 network_spoolout_room(pSC);
 515                 pSC = pSC->next;
 516         }
 517
 518         pSC = sc;
 519         while (pSC != NULL)
 520         {
 521                 sc = pSC->next;
 522                 free_spoolcontrol_struct(&pSC);
 523                 pSC = sc;
 524         }
 525         /* If there is anything in the inbound queue, process it */
 526         if (!server_shutting_down) {
 527                 network_do_spoolin(working_ignetcfg,
 528                                    the_netmap,
 529                                    &netmap_changed);
 530         }
 531
 532         /* Free the filter list in memory */
 533         free_netfilter_list();
 534
 535         /* Save the network map back to disk */
 536         if (netmap_changed) {
 537                 StrBuf *MapStr = CtdlSerializeNetworkMap(the_netmap);
 538                 char *pMapStr = SmashStrBuf(&MapStr);
 539                 CtdlPutSysConfig(IGNETMAP, pMapStr);
 540                 free(pMapStr);
 541         }
 542
 543         /* combine singe message files into one spool entry per remote node. */
 544         network_consolidate_spoolout(working_ignetcfg, the_netmap);
 545
 546         /* shut down. */
 547
 548         DeleteHash(&the_netmap);
 549
 550         DeleteHash(&working_ignetcfg);
 551
 552         QNM_syslog(LOG_DEBUG, "network: queue run completed");
 553
 554         if (full_processing) {
 555                 last_run = time(NULL);
 556         }
 557         destroy_network_queue_room(RL.rplist);
 558         SaveChangedConfigs();
 559
 560 }
 561
 562
 563
 564
 565
 566
 567
 568
 569 void network_logout_hook(void)
 570 {
 571         CitContext *CCC = MyContext();
 572
 573         /*
 574          * If we were talking to a network node, we're not anymore...
 575          */
 576         if (!IsEmptyStr(CCC->net_node)) {
 577                 CtdlNetworkTalkingTo(CCC->net_node, strlen(CCC->net_node), NTT_REMOVE);
 578                 CCC->net_node[0] = '\0';
 579         }
 580 }
 581 void network_cleanup_function(void)
 582 {
 583         struct CitContext *CCC = CC;
 584
 585         if (!IsEmptyStr(CCC->net_node)) {
 586                 CtdlNetworkTalkingTo(CCC->net_node, strlen(CCC->net_node), NTT_REMOVE);
 587                 CCC->net_node[0] = '\0';
 588         }
 589 }
 590
 591
 592 int ignet_aftersave(struct CtdlMessage *msg,
 593                     recptypes *recps)   /* recipients (if mail) */
 594 {
 595         /* For IGnet mail, we have to save a new copy into the spooler for
 596          * each recipient, with the R and D fields set to the recipient and
 597          * destination-node.  This has two ugly side effects: all other
 598          * recipients end up being unlisted in this recipient's copy of the
 599          * message, and it has to deliver multiple messages to the same
 600          * node.  We'll revisit this again in a year or so when everyone has
 601          * a network spool receiver that can handle the new style messages.
 602          */
 603         if ((recps != NULL) && (recps->num_ignet > 0))
 604         {
 605                 char *recipient;
 606                 int rv = 0;
 607                 struct ser_ret smr;
 608                 FILE *network_fp = NULL;
 609                 char submit_filename[128];
 610                 static int seqnum = 1;
 611                 int i;
 612                 char *hold_R, *hold_D, *RBuf, *DBuf;
 613                 long hrlen, hdlen, rblen, dblen, count, rlen;
 614                 CitContext *CCC = MyContext();
 615
 616                 CM_GetAsField(msg, eRecipient, &hold_R, &hrlen);;
 617                 CM_GetAsField(msg, eDestination, &hold_D, &hdlen);;
 618
 619                 count = num_tokens(recps->recp_ignet, '|');
 620                 rlen = strlen(recps->recp_ignet);
 621                 recipient = malloc(rlen + 1);
 622                 RBuf = malloc(rlen + 1);
 623                 DBuf = malloc(rlen + 1);
 624                 for (i=0; i<count; ++i) {
 625                         extract_token(recipient, recps->recp_ignet, i,
 626                                       '|', rlen + 1);
 627
 628                         rblen = extract_token(RBuf, recipient, 0, '@', rlen + 1);
 629                         dblen = extract_token(DBuf, recipient, 1, '@', rlen + 1);
 630
 631                         CM_SetAsField(msg, eRecipient, &RBuf, rblen);;
 632                         CM_SetAsField(msg, eDestination, &DBuf, dblen);;
 633                         CtdlSerializeMessage(&smr, msg);
 634                         if (smr.len > 0) {
 635                                 snprintf(submit_filename, sizeof submit_filename,
 636                                          "%s/netmail.%04lx.%04x.%04x",
 637                                          ctdl_netin_dir,
 638                                          (long) getpid(),
 639                                          CCC->cs_pid,
 640                                          ++seqnum);
 641
 642                                 network_fp = fopen(submit_filename, "wb+");
 643                                 if (network_fp != NULL) {
 644                                         rv = fwrite(smr.ser, smr.len, 1, network_fp);
 645                                         if (rv == -1) {
 646                                                 MSG_syslog(LOG_EMERG, "CtdlSubmitMsg(): Couldn't write network spool file: %s\n",
 647                                                            strerror(errno));
 648                                         }
 649                                         fclose(network_fp);
 650                                 }
 651                                 free(smr.ser);
 652                         }
 653                         CM_GetAsField(msg, eRecipient, &RBuf, &rblen);;
 654                         CM_GetAsField(msg, eDestination, &DBuf, &dblen);;
 655                 }
 656                 free(RBuf);
 657                 free(DBuf);
 658                 free(recipient);
 659                 CM_SetAsField(msg, eRecipient, &hold_R, hrlen);
 660                 CM_SetAsField(msg, eDestination, &hold_D, hdlen);
 661                 return 1;
 662         }
 663         return 0;
 664 }
 665
 666 /*
 667  * Module entry point
 668  */
 669
 670 void SetNetQDebugEnabled(const int n)
 671 {
 672         NetQDebugEnabled = n;
 673 }
 674
 675 CTDL_MODULE_INIT(network)
 676 {
 677         if (!threading)
 678         {
 679                 CtdlRegisterMessageHook(ignet_aftersave, EVT_AFTERSAVE);
 680
 681                 CtdlFillSystemContext(&networker_spool_CC, "CitNetSpool");
 682                 CtdlRegisterDebugFlagHook(HKEY("networkqueue"), SetNetQDebugEnabled, &NetQDebugEnabled);
 683                 CtdlRegisterSessionHook(network_cleanup_function, EVT_STOP, PRIO_STOP + 30);
 684                 CtdlRegisterSessionHook(network_logout_hook, EVT_LOGOUT, PRIO_LOGOUT + 10);
 685                 CtdlRegisterProtoHook(cmd_nsyn, "NSYN", "Synchronize room to node");
 686                 CtdlRegisterRoomHook(network_room_handler);
 687                 CtdlRegisterCleanupHook(destroy_network_queue_room_locked);
 688                 CtdlRegisterSessionHook(network_do_queue, EVT_TIMER, PRIO_QUEUE + 10);
 689         }
 690         return "network";
 691 }