citadel/serv_extensions.c

   1 /*
   2  * Citadel Dynamic Loading Module
   3  * Written by Brian Costello <btx@calyx.net>
   4  *
   5  * Copyright (c) 1987-2011 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 as published by
   9  * the Free Software Foundation; either version 3 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  20  */
  21
  22 #include "sysdep.h"
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <unistd.h>
  26 #include <sys/types.h>
  27 #include <dirent.h>
  28 #include <string.h>
  29 #include <limits.h>
  30 #include <ctype.h>
  31 #include <syslog.h>
  32 #include <libcitadel.h>
  33 #include "citadel.h"
  34 #include "server.h"
  35 #include "serv_extensions.h"
  36 #include "sysdep_decls.h"
  37 #include "msgbase.h"
  38 #include "config.h"
  39
  40 #include "modules/crypto/serv_crypto.h" /* Needed until a universal crypto startup hook is implimented for CtdlStartTLS */
  41
  42 #include "ctdl_module.h"
  43
  44 #ifndef HAVE_SNPRINTF
  45 #include <stdarg.h>
  46 #include "snprintf.h"
  47 #endif
  48
  49 int DebugModules = 0;
  50
  51 /*
  52  * Structure defentitions for hook tables
  53  */
  54
  55 typedef struct __LogDebugEntry {
  56         CtdlDbgFunction F;
  57         const char *Name;
  58         long Len;
  59         const int *LogP;
  60 } LogDebugEntry;
  61 HashList *LogDebugEntryTable = NULL;
  62
  63 typedef struct LogFunctionHook LogFunctionHook;
  64 struct LogFunctionHook {
  65         LogFunctionHook *next;
  66         int loglevel;
  67         void (*h_function_pointer) (char *);
  68 };
  69 extern LogFunctionHook *LogHookTable;
  70
  71 typedef struct FixedOutputHook FixedOutputHook;
  72 struct FixedOutputHook {
  73         FixedOutputHook *next;
  74         char content_type[64];
  75         void (*h_function_pointer) (char *, int);
  76 };
  77 extern FixedOutputHook *FixedOutputTable;
  78
  79
  80
  81 /*
  82  * SessionFunctionHook extensions are used for any type of hook for which
  83  * the context in which it's being called (which is determined by the event
  84  * type) will make it obvious for the hook function to know where to look for
  85  * pertinent data.
  86  */
  87 typedef struct SessionFunctionHook SessionFunctionHook;
  88 struct SessionFunctionHook {
  89         SessionFunctionHook *next;
  90         void (*h_function_pointer) (void);
  91         int eventtype;
  92 };
  93 extern SessionFunctionHook *SessionHookTable;
  94
  95
  96 /*
  97  * UserFunctionHook extensions are used for any type of hook which implements
  98  * an operation on a user or username (potentially) other than the one
  99  * operating the current session.
 100  */
 101 typedef struct UserFunctionHook UserFunctionHook;
 102 struct UserFunctionHook {
 103         UserFunctionHook *next;
 104         void (*h_function_pointer) (struct ctdluser *usbuf);
 105         int eventtype;
 106 };
 107 extern UserFunctionHook *UserHookTable;
 108
 109 /*
 110  * MessageFunctionHook extensions are used for hooks which implement handlers
 111  * for various types of message operations (save, read, etc.)
 112  */
 113 typedef struct MessageFunctionHook MessageFunctionHook;
 114 struct MessageFunctionHook {
 115         MessageFunctionHook *next;
 116         int (*h_function_pointer) (struct CtdlMessage *msg);
 117         int eventtype;
 118 };
 119 extern MessageFunctionHook *MessageHookTable;
 120
 121
 122 /*
 123  * NetprocFunctionHook extensions are used for hooks which implement handlers
 124  * for incoming network messages.
 125  */
 126 typedef struct NetprocFunctionHook NetprocFunctionHook;
 127 struct NetprocFunctionHook {
 128         NetprocFunctionHook *next;
 129         int (*h_function_pointer) (struct CtdlMessage *msg, char *target_room);
 130 };
 131 extern NetprocFunctionHook *NetprocHookTable;
 132
 133
 134 /*
 135  * DeleteFunctionHook extensions are used for hooks which get called when a
 136  * message is about to be deleted.
 137  */
 138 typedef struct DeleteFunctionHook DeleteFunctionHook;
 139 struct DeleteFunctionHook {
 140         DeleteFunctionHook *next;
 141         void (*h_function_pointer) (char *target_room, long msgnum);
 142 };
 143 extern DeleteFunctionHook *DeleteHookTable;
 144
 145
 146 /*
 147  * ExpressMessageFunctionHook extensions are used for hooks which implement
 148  * the sending of an instant message through various channels.  Any function
 149  * registered should return the number of recipients to whom the message was
 150  * successfully transmitted.
 151  */
 152 typedef struct XmsgFunctionHook XmsgFunctionHook;
 153 struct XmsgFunctionHook {
 154         XmsgFunctionHook *next;
 155         int (*h_function_pointer) (char *, char *, char *, char *);
 156         int order;
 157 };
 158 extern XmsgFunctionHook *XmsgHookTable;
 159
 160
 161
 162
 163 /*
 164  * RoomFunctionHook extensions are used for hooks which impliment room
 165  * processing functions when new messages are added EG. SIEVE.
 166  */
 167 typedef struct RoomFunctionHook RoomFunctionHook;
 168 struct RoomFunctionHook {
 169         RoomFunctionHook *next;
 170         int (*fcn_ptr) (struct ctdlroom *);
 171 };
 172 extern RoomFunctionHook *RoomHookTable;
 173
 174
 175
 176 typedef struct SearchFunctionHook SearchFunctionHook;
 177 struct SearchFunctionHook {
 178         SearchFunctionHook *next;
 179         void (*fcn_ptr) (int *, long **, const char *);
 180         char *name;
 181 };
 182 extern SearchFunctionHook *SearchFunctionHookTable;
 183
 184
 185 CleanupFunctionHook *CleanupHookTable = NULL;
 186 CleanupFunctionHook *EVCleanupHookTable = NULL;
 187 SessionFunctionHook *SessionHookTable = NULL;
 188 UserFunctionHook *UserHookTable = NULL;
 189 XmsgFunctionHook *XmsgHookTable = NULL;
 190 MessageFunctionHook *MessageHookTable = NULL;
 191 NetprocFunctionHook *NetprocHookTable = NULL;
 192 DeleteFunctionHook *DeleteHookTable = NULL;
 193 ServiceFunctionHook *ServiceHookTable = NULL;
 194 FixedOutputHook *FixedOutputTable = NULL;
 195 RoomFunctionHook *RoomHookTable = NULL;
 196 SearchFunctionHook *SearchFunctionHookTable = NULL;
 197
 198 typedef struct ProtoFunctionHook ProtoFunctionHook;
 199 struct ProtoFunctionHook {
 200         void (*handler) (char *cmdbuf);
 201         const char *cmd;
 202         const char *desc;
 203 };
 204
 205 HashList *ProtoHookList = NULL;
 206
 207
 208 #define ERR_PORT (1 << 1)
 209
 210
 211 static StrBuf *portlist = NULL;
 212
 213 static StrBuf *errormessages = NULL;
 214
 215
 216 long   DetailErrorFlags;
 217 ConstStr Empty = {HKEY("")};
 218 char *ErrSubject = "Startup Problems";
 219 ConstStr ErrGeneral[] = {
 220         {HKEY("Citadel had trouble on starting up. ")},
 221         {HKEY(" This means, citadel won't be the service provider for a specific service you configured it to.\n\n"
 222               "If you don't want citadel to provide these services, turn them off in WebCit via: ")},
 223         {HKEY("To make both ways actualy take place restart the citserver with \"sendcommand down\"\n\n"
 224               "The errors returned by the system were:\n")},
 225         {HKEY("You can recheck the above if you follow this faq item:\n"
 226               "http://www.citadel.org/doku.php?id=faq:mastering_your_os:net#netstat")}
 227 };
 228
 229 ConstStr ErrPortShort = { HKEY("We couldn't bind all ports you configured to be provided by citadel server.\n")};
 230 ConstStr ErrPortWhere = { HKEY("\"Admin->System Preferences->Network\".\n\nThe failed ports and sockets are: ")};
 231 ConstStr ErrPortHint  = { HKEY("If you want citadel to provide you with that functionality, "
 232                                "check the output of \"netstat -lnp\" on linux Servers or \"netstat -na\" on *BSD"
 233                                " and stop the program that binds these ports.\n You should eventually remove "
 234                                " their initscripts in /etc/init.d so that you won't get this trouble once more.\n"
 235                                " After that goto \"Administration -> Shutdown Citadel\" to make Citadel restart & retry to bind this port.\n")};
 236
 237
 238 void LogPrintMessages(long err)
 239 {
 240         StrBuf *Message;
 241         StrBuf *List, *DetailList;
 242         ConstStr *Short, *Where, *Hint;
 243
 244
 245         Message = NewStrBufPlain(NULL,
 246                                  StrLength(portlist) + StrLength(errormessages));
 247
 248         DetailErrorFlags = DetailErrorFlags & ~err;
 249
 250         switch (err)
 251         {
 252         case ERR_PORT:
 253                 Short = &ErrPortShort;
 254                 Where = &ErrPortWhere;
 255                 Hint  = &ErrPortHint;
 256                 List  = portlist;
 257                 DetailList = errormessages;
 258                 break;
 259         default:
 260                 Short = &Empty;
 261                 Where = &Empty;
 262                 Hint  = &Empty;
 263                 List  = NULL;
 264                 DetailList = NULL;
 265         }
 266
 267         StrBufAppendBufPlain(Message, CKEY(ErrGeneral[0]), 0);
 268         StrBufAppendBufPlain(Message, CKEY(*Short), 0);
 269         StrBufAppendBufPlain(Message, CKEY(ErrGeneral[1]), 0);
 270         StrBufAppendBufPlain(Message, CKEY(*Where), 0);
 271         StrBufAppendBuf(Message, List, 0);
 272         StrBufAppendBufPlain(Message, HKEY("\n\n"), 0);
 273         StrBufAppendBufPlain(Message, CKEY(*Hint), 0);
 274         StrBufAppendBufPlain(Message, HKEY("\n\n"), 0);
 275         StrBufAppendBufPlain(Message, CKEY(ErrGeneral[2]), 0);
 276         StrBufAppendBuf(Message, DetailList, 0);
 277         StrBufAppendBufPlain(Message, HKEY("\n\n"), 0);
 278         StrBufAppendBufPlain(Message, CKEY(ErrGeneral[3]), 0);
 279
 280         MOD_syslog(LOG_EMERG, "%s", ChrPtr(Message));
 281         MOD_syslog(LOG_EMERG, "%s", ErrSubject);
 282         quickie_message("Citadel", NULL, NULL, AIDEROOM, ChrPtr(Message), FMT_FIXED, ErrSubject);
 283
 284         FreeStrBuf(&Message);
 285         FreeStrBuf(&List);
 286         FreeStrBuf(&DetailList);
 287 }
 288
 289
 290 void AddPortError(char *Port, char *ErrorMessage)
 291 {
 292         long len;
 293
 294         DetailErrorFlags |= ERR_PORT;
 295
 296         len = StrLength(errormessages);
 297         if (len > 0) StrBufAppendBufPlain(errormessages, HKEY("; "), 0);
 298         else errormessages = NewStrBuf();
 299         StrBufAppendBufPlain(errormessages, ErrorMessage, -1, 0);
 300
 301
 302         len = StrLength(portlist);
 303         if (len > 0) StrBufAppendBufPlain(portlist, HKEY(";"), 0);
 304         else portlist = NewStrBuf();
 305         StrBufAppendBufPlain(portlist, Port, -1, 0);
 306 }
 307
 308
 309 int DLoader_Exec_Cmd(char *cmdbuf)
 310 {
 311         void *vP;
 312         ProtoFunctionHook *p;
 313
 314         if (GetHash(ProtoHookList, cmdbuf, 4, &vP) && (vP != NULL)) {
 315                 p = (ProtoFunctionHook*) vP;
 316                 p->handler(&cmdbuf[5]);
 317                 return 1;
 318         }
 319         return 0;
 320 }
 321
 322 long FourHash(const char *key, long length)
 323 {
 324         int i;
 325         int ret = 0;
 326         const unsigned char *ptr = (const unsigned char*)key;
 327
 328         for (i = 0; i < 4; i++, ptr ++)
 329                 ret = (ret << 8) |
 330                         ( ((*ptr >= 'a') &&
 331                            (*ptr <= 'z'))?
 332                           *ptr - 'a' + 'A':
 333                           *ptr);
 334
 335         return ret;
 336 }
 337
 338 void CtdlRegisterDebugFlagHook(const char *Name, long Len, CtdlDbgFunction F, const int *LogP)
 339 {
 340         LogDebugEntry *E;
 341         if (LogDebugEntryTable == NULL)
 342                 LogDebugEntryTable = NewHash(1, NULL);
 343         E = (LogDebugEntry*) malloc(sizeof(LogDebugEntry));
 344         E->F = F;
 345         E->Name = Name;
 346         E->Len = Len;
 347         E->LogP = LogP;
 348         Put(LogDebugEntryTable, Name, Len, E, NULL);
 349
 350 }
 351 void CtdlSetDebugLogFacilities(const char **Str, long n)
 352 {
 353         StrBuf *Token = NULL;
 354         StrBuf *Buf = NULL;
 355         const char *ch;
 356         int i;
 357         int DoAll = 0;
 358         void *vptr;
 359
 360         for (i=0; i < n; i++){
 361                 if ((Str[i] != NULL) && !IsEmptyStr(Str[i])) {
 362                         if (strcmp(Str[i], "all") == 0) {
 363                                 DoAll = 1;
 364                                 continue;
 365                         }
 366                         Buf = NewStrBufPlain(Str[i], -1);
 367                         ch = NULL;
 368                         if (Token == NULL)
 369                                 Token = NewStrBufPlain(NULL, StrLength(Buf));
 370                         while ((ch != StrBufNOTNULL) &&
 371                                StrBufExtract_NextToken(Token, Buf, &ch, ',')) {
 372                                 if (GetHash(LogDebugEntryTable, SKEY(Token), &vptr) &&
 373                                     (vptr != NULL))
 374                                 {
 375                                         LogDebugEntry *E = (LogDebugEntry*)vptr;
 376                                         E->F(1);
 377                                 }
 378                         }
 379                 }
 380                 FreeStrBuf(&Buf);
 381         }
 382         FreeStrBuf(&Token);
 383         if (DoAll) {
 384                 long HKLen;
 385                 const char *ch;
 386                 HashPos *Pos;
 387
 388                 Pos = GetNewHashPos(LogDebugEntryTable, 0);
 389                 while (GetNextHashPos(LogDebugEntryTable, Pos, &HKLen, &ch, &vptr)) {
 390                         LogDebugEntry *E = (LogDebugEntry*)vptr;
 391                         E->F(1);
 392                 }
 393
 394                 DeleteHashPos(&Pos);
 395         }
 396 }
 397 void cmd_log_get(char *argbuf)
 398 {
 399         long HKLen;
 400         const char *ch;
 401         HashPos *Pos;
 402         void *vptr;
 403
 404         if (CtdlAccessCheck(ac_aide)) return;
 405
 406         cprintf("%d Log modules enabled:\n", LISTING_FOLLOWS);
 407
 408         Pos = GetNewHashPos(LogDebugEntryTable, 0);
 409
 410         while (GetNextHashPos(LogDebugEntryTable, Pos, &HKLen, &ch, &vptr)) {
 411                 LogDebugEntry *E = (LogDebugEntry*)vptr;
 412                 cprintf("%s|%d\n", ch, *E->LogP);
 413         }
 414
 415         DeleteHashPos(&Pos);
 416         cprintf("000\n");
 417 }
 418 void cmd_log_set(char *argbuf)
 419 {
 420         void *vptr;
 421         int lset;
 422         int wlen;
 423         char which[SIZ] = "";
 424
 425         if (CtdlAccessCheck(ac_aide)) return;
 426
 427         wlen = extract_token(which, argbuf, 0, '|', sizeof(which));
 428         if (wlen < 0) wlen = 0;
 429         lset = extract_int(argbuf, 1);
 430         if (lset != 0) lset = 1;
 431         if (GetHash(LogDebugEntryTable, which, wlen, &vptr) &&
 432             (vptr != NULL))
 433         {
 434                 LogDebugEntry *E = (LogDebugEntry*)vptr;
 435                 E->F(lset);
 436                 cprintf("%d %s|%d\n", CIT_OK, which, lset);
 437         }
 438         else {
 439                 cprintf("%d Log setting %s not known\n",
 440                         ERROR, which);
 441         }
 442 }
 443 void CtdlDestroyDebugTable(void)
 444 {
 445
 446         DeleteHash(&LogDebugEntryTable);
 447 }
 448
 449 void CtdlRegisterProtoHook(void (*handler) (char *), char *cmd, char *desc)
 450 {
 451         ProtoFunctionHook *p;
 452
 453         if (ProtoHookList == NULL)
 454                 ProtoHookList = NewHash (1, FourHash);
 455
 456
 457         p = (ProtoFunctionHook *)
 458                 malloc(sizeof(ProtoFunctionHook));
 459
 460         if (p == NULL) {
 461                 fprintf(stderr, "can't malloc new ProtoFunctionHook\n");
 462                 exit(EXIT_FAILURE);
 463         }
 464         p->handler = handler;
 465         p->cmd = cmd;
 466         p->desc = desc;
 467
 468         Put(ProtoHookList, cmd, 4, p, NULL);
 469         MOD_syslog(LOG_DEBUG, "Registered server command %s (%s)\n", cmd, desc);
 470 }
 471
 472 void CtdlDestroyProtoHooks(void)
 473 {
 474
 475         DeleteHash(&ProtoHookList);
 476 }
 477
 478
 479 void CtdlRegisterCleanupHook(void (*fcn_ptr) (void))
 480 {
 481
 482         CleanupFunctionHook *newfcn;
 483
 484         newfcn = (CleanupFunctionHook *)
 485             malloc(sizeof(CleanupFunctionHook));
 486         newfcn->next = CleanupHookTable;
 487         newfcn->h_function_pointer = fcn_ptr;
 488         CleanupHookTable = newfcn;
 489
 490         MODM_syslog(LOG_DEBUG, "Registered a new cleanup function\n");
 491 }
 492
 493
 494 void CtdlUnregisterCleanupHook(void (*fcn_ptr) (void))
 495 {
 496         CleanupFunctionHook *cur, *p;
 497
 498         for (cur = CleanupHookTable; cur != NULL; cur = cur->next) {
 499                 /* This will also remove duplicates if any */
 500                 while (cur != NULL &&
 501                                 fcn_ptr == cur->h_function_pointer) {
 502                         MODM_syslog(LOG_DEBUG, "Unregistered cleanup function\n");
 503                         p = cur->next;
 504                         if (cur == CleanupHookTable) {
 505                                 CleanupHookTable = p;
 506                         }
 507                         free(cur);
 508                         cur = p;
 509                 }
 510         }
 511 }
 512
 513
 514 void CtdlDestroyCleanupHooks(void)
 515 {
 516         CleanupFunctionHook *cur, *p;
 517
 518         cur = CleanupHookTable;
 519         while (cur != NULL)
 520         {
 521                 MODM_syslog(LOG_DEBUG, "Destroyed cleanup function\n");
 522                 p = cur->next;
 523                 free(cur);
 524                 cur = p;
 525         }
 526         CleanupHookTable = NULL;
 527 }
 528
 529 void CtdlRegisterEVCleanupHook(void (*fcn_ptr) (void))
 530 {
 531
 532         CleanupFunctionHook *newfcn;
 533
 534         newfcn = (CleanupFunctionHook *)
 535             malloc(sizeof(CleanupFunctionHook));
 536         newfcn->next = EVCleanupHookTable;
 537         newfcn->h_function_pointer = fcn_ptr;
 538         EVCleanupHookTable = newfcn;
 539
 540         MODM_syslog(LOG_DEBUG, "Registered a new cleanup function\n");
 541 }
 542
 543
 544 void CtdlUnregisterEVCleanupHook(void (*fcn_ptr) (void))
 545 {
 546         CleanupFunctionHook *cur, *p;
 547
 548         for (cur = EVCleanupHookTable; cur != NULL; cur = cur->next) {
 549                 /* This will also remove duplicates if any */
 550                 while (cur != NULL &&
 551                                 fcn_ptr == cur->h_function_pointer) {
 552                         MODM_syslog(LOG_DEBUG, "Unregistered cleanup function\n");
 553                         p = cur->next;
 554                         if (cur == EVCleanupHookTable) {
 555                                 EVCleanupHookTable = p;
 556                         }
 557                         free(cur);
 558                         cur = p;
 559                 }
 560         }
 561 }
 562
 563
 564 void CtdlDestroyEVCleanupHooks(void)
 565 {
 566         CleanupFunctionHook *cur, *p;
 567
 568         cur = EVCleanupHookTable;
 569         while (cur != NULL)
 570         {
 571                 MODM_syslog(LOG_DEBUG, "Destroyed cleanup function\n");
 572                 p = cur->next;
 573                 free(cur);
 574                 cur = p;
 575         }
 576         EVCleanupHookTable = NULL;
 577 }
 578
 579
 580 void CtdlRegisterSessionHook(void (*fcn_ptr) (void), int EventType)
 581 {
 582
 583         SessionFunctionHook *newfcn;
 584
 585         newfcn = (SessionFunctionHook *)
 586             malloc(sizeof(SessionFunctionHook));
 587         newfcn->next = SessionHookTable;
 588         newfcn->h_function_pointer = fcn_ptr;
 589         newfcn->eventtype = EventType;
 590         SessionHookTable = newfcn;
 591
 592         MOD_syslog(LOG_DEBUG, "Registered a new session function (type %d)\n",
 593                    EventType);
 594 }
 595
 596
 597 void CtdlUnregisterSessionHook(void (*fcn_ptr) (void), int EventType)
 598 {
 599         SessionFunctionHook *cur, *p;
 600
 601         for (cur = SessionHookTable; cur != NULL; cur = cur->next) {
 602                 /* This will also remove duplicates if any */
 603                 while (cur != NULL &&
 604                                 fcn_ptr == cur->h_function_pointer &&
 605                                 EventType == cur->eventtype) {
 606                         MOD_syslog(LOG_DEBUG, "Unregistered session function (type %d)\n",
 607                                    EventType);
 608                         p = cur->next;
 609                         if (cur == SessionHookTable) {
 610                                 SessionHookTable = p;
 611                         }
 612                         free(cur);
 613                         cur = p;
 614                 }
 615         }
 616 }
 617
 618 void CtdlDestroySessionHooks(void)
 619 {
 620         SessionFunctionHook *cur, *p;
 621
 622         cur = SessionHookTable;
 623         while (cur != NULL)
 624         {
 625                 MODM_syslog(LOG_DEBUG, "Destroyed session function\n");
 626                 p = cur->next;
 627                 free(cur);
 628                 cur = p;
 629         }
 630         SessionHookTable = NULL;
 631 }
 632
 633
 634 void CtdlRegisterUserHook(void (*fcn_ptr) (ctdluser *), int EventType)
 635 {
 636
 637         UserFunctionHook *newfcn;
 638
 639         newfcn = (UserFunctionHook *)
 640             malloc(sizeof(UserFunctionHook));
 641         newfcn->next = UserHookTable;
 642         newfcn->h_function_pointer = fcn_ptr;
 643         newfcn->eventtype = EventType;
 644         UserHookTable = newfcn;
 645
 646         MOD_syslog(LOG_DEBUG, "Registered a new user function (type %d)\n",
 647                    EventType);
 648 }
 649
 650
 651 void CtdlUnregisterUserHook(void (*fcn_ptr) (struct ctdluser *), int EventType)
 652 {
 653         UserFunctionHook *cur, *p;
 654
 655         for (cur = UserHookTable; cur != NULL; cur = cur->next) {
 656                 /* This will also remove duplicates if any */
 657                 while (cur != NULL &&
 658                                 fcn_ptr == cur->h_function_pointer &&
 659                                 EventType == cur->eventtype) {
 660                         MOD_syslog(LOG_DEBUG, "Unregistered user function (type %d)\n",
 661                                    EventType);
 662                         p = cur->next;
 663                         if (cur == UserHookTable) {
 664                                 UserHookTable = p;
 665                         }
 666                         free(cur);
 667                         cur = p;
 668                 }
 669         }
 670 }
 671
 672 void CtdlDestroyUserHooks(void)
 673 {
 674         UserFunctionHook *cur, *p;
 675
 676         cur = UserHookTable;
 677         while (cur != NULL)
 678         {
 679                 MODM_syslog(LOG_DEBUG, "Destroyed user function \n");
 680                 p = cur->next;
 681                 free(cur);
 682                 cur = p;
 683         }
 684         UserHookTable = NULL;
 685 }
 686
 687
 688 void CtdlRegisterMessageHook(int (*handler)(struct CtdlMessage *),
 689                                 int EventType)
 690 {
 691
 692         MessageFunctionHook *newfcn;
 693
 694         newfcn = (MessageFunctionHook *)
 695             malloc(sizeof(MessageFunctionHook));
 696         newfcn->next = MessageHookTable;
 697         newfcn->h_function_pointer = handler;
 698         newfcn->eventtype = EventType;
 699         MessageHookTable = newfcn;
 700
 701         MOD_syslog(LOG_DEBUG, "Registered a new message function (type %d)\n",
 702                    EventType);
 703 }
 704
 705
 706 void CtdlUnregisterMessageHook(int (*handler)(struct CtdlMessage *),
 707                 int EventType)
 708 {
 709         MessageFunctionHook *cur, *p;
 710
 711         for (cur = MessageHookTable; cur != NULL; cur = cur->next) {
 712                 /* This will also remove duplicates if any */
 713                 while (cur != NULL &&
 714                                 handler == cur->h_function_pointer &&
 715                                 EventType == cur->eventtype) {
 716                         MOD_syslog(LOG_DEBUG, "Unregistered message function (type %d)\n",
 717                                    EventType);
 718                         p = cur->next;
 719                         if (cur == MessageHookTable) {
 720                                 MessageHookTable = p;
 721                         }
 722                         free(cur);
 723                         cur = p;
 724                 }
 725         }
 726 }
 727
 728 void CtdlDestroyMessageHook(void)
 729 {
 730         MessageFunctionHook *cur, *p;
 731
 732         cur = MessageHookTable;
 733         while (cur != NULL)
 734         {
 735                 MOD_syslog(LOG_DEBUG, "Destroyed message function (type %d)\n", cur->eventtype);
 736                 p = cur->next;
 737                 free(cur);
 738                 cur = p;
 739         }
 740         MessageHookTable = NULL;
 741 }
 742
 743
 744 void CtdlRegisterRoomHook(int (*fcn_ptr)(struct ctdlroom *))
 745 {
 746         RoomFunctionHook *newfcn;
 747
 748         newfcn = (RoomFunctionHook *)
 749             malloc(sizeof(RoomFunctionHook));
 750         newfcn->next = RoomHookTable;
 751         newfcn->fcn_ptr = fcn_ptr;
 752         RoomHookTable = newfcn;
 753
 754         MODM_syslog(LOG_DEBUG, "Registered a new room function\n");
 755 }
 756
 757
 758 void CtdlUnregisterRoomHook(int (*fcn_ptr)(struct ctdlroom *))
 759 {
 760         RoomFunctionHook *cur, *p, *last;
 761
 762         for (last = NULL, cur = RoomHookTable;
 763              cur != NULL;
 764              cur = cur->next)
 765         {
 766                 if (fcn_ptr == cur->fcn_ptr) {
 767                         MODM_syslog(LOG_DEBUG, "Unregistered room function\n");
 768                         p = cur->next;
 769
 770                         free(cur);
 771                         cur = NULL;
 772
 773                         if (last != NULL)
 774                                 last->next = p;
 775                         else
 776                                 RoomHookTable = p;
 777                 }
 778                 last = cur;
 779         }
 780 }
 781
 782
 783 void CtdlDestroyRoomHooks(void)
 784 {
 785         RoomFunctionHook *cur, *p;
 786
 787         cur = RoomHookTable;
 788         while (cur != NULL)
 789         {
 790                 MODM_syslog(LOG_DEBUG, "Destroyed room function\n");
 791                 p = cur->next;
 792                 free(cur);
 793                 cur = p;
 794         }
 795         RoomHookTable = NULL;
 796 }
 797
 798 void CtdlRegisterNetprocHook(int (*handler)(struct CtdlMessage *, char *) )
 799 {
 800         NetprocFunctionHook *newfcn;
 801
 802         newfcn = (NetprocFunctionHook *)
 803             malloc(sizeof(NetprocFunctionHook));
 804         newfcn->next = NetprocHookTable;
 805         newfcn->h_function_pointer = handler;
 806         NetprocHookTable = newfcn;
 807
 808         MODM_syslog(LOG_DEBUG, "Registered a new netproc function\n");
 809 }
 810
 811
 812 void CtdlUnregisterNetprocHook(int (*handler)(struct CtdlMessage *, char *) )
 813 {
 814         NetprocFunctionHook *cur, *p;
 815
 816         for (cur = NetprocHookTable; cur != NULL; cur = cur->next) {
 817                 /* This will also remove duplicates if any */
 818                 while (cur != NULL &&
 819                                 handler == cur->h_function_pointer ) {
 820                         MODM_syslog(LOG_DEBUG, "Unregistered netproc function\n");
 821                         p = cur->next;
 822                         if (cur == NetprocHookTable) {
 823                                 NetprocHookTable = p;
 824                         }
 825                         free(cur);
 826                         cur = p;
 827                 }
 828         }
 829 }
 830
 831 void CtdlDestroyNetprocHooks(void)
 832 {
 833         NetprocFunctionHook *cur, *p;
 834
 835         cur = NetprocHookTable;
 836         while (cur != NULL)
 837         {
 838                 MODM_syslog(LOG_DEBUG, "Destroyed netproc function\n");
 839                 p = cur->next;
 840                 free(cur);
 841                 cur = p;
 842         }
 843         NetprocHookTable = NULL;
 844 }
 845
 846
 847 void CtdlRegisterDeleteHook(void (*handler)(char *, long) )
 848 {
 849         DeleteFunctionHook *newfcn;
 850
 851         newfcn = (DeleteFunctionHook *)
 852             malloc(sizeof(DeleteFunctionHook));
 853         newfcn->next = DeleteHookTable;
 854         newfcn->h_function_pointer = handler;
 855         DeleteHookTable = newfcn;
 856
 857         MODM_syslog(LOG_DEBUG, "Registered a new delete function\n");
 858 }
 859
 860
 861 void CtdlUnregisterDeleteHook(void (*handler)(char *, long) )
 862 {
 863         DeleteFunctionHook *cur, *p;
 864
 865         for (cur = DeleteHookTable; cur != NULL; cur = cur->next) {
 866                 /* This will also remove duplicates if any */
 867                 while (cur != NULL &&
 868                                 handler == cur->h_function_pointer ) {
 869                         MODM_syslog(LOG_DEBUG, "Unregistered delete function\n");
 870                         p = cur->next;
 871                         if (cur == DeleteHookTable) {
 872                                 DeleteHookTable = p;
 873                         }
 874                         free(cur);
 875                         cur = p;
 876                 }
 877         }
 878 }
 879 void CtdlDestroyDeleteHooks(void)
 880 {
 881         DeleteFunctionHook *cur, *p;
 882
 883         cur = DeleteHookTable;
 884         while (cur != NULL)
 885         {
 886                 MODM_syslog(LOG_DEBUG, "Destroyed delete function\n");
 887                 p = cur->next;
 888                 free(cur);
 889                 cur = p;
 890         }
 891         DeleteHookTable = NULL;
 892 }
 893
 894
 895
 896
 897 void CtdlRegisterFixedOutputHook(char *content_type, void (*handler)(char *, int) )
 898 {
 899         FixedOutputHook *newfcn;
 900
 901         newfcn = (FixedOutputHook *)
 902             malloc(sizeof(FixedOutputHook));
 903         newfcn->next = FixedOutputTable;
 904         newfcn->h_function_pointer = handler;
 905         safestrncpy(newfcn->content_type, content_type, sizeof newfcn->content_type);
 906         FixedOutputTable = newfcn;
 907
 908         MOD_syslog(LOG_DEBUG, "Registered a new fixed output function for %s\n", newfcn->content_type);
 909 }
 910
 911
 912 void CtdlUnregisterFixedOutputHook(char *content_type)
 913 {
 914         FixedOutputHook *cur, *p;
 915
 916         for (cur = FixedOutputTable; cur != NULL; cur = cur->next) {
 917                 /* This will also remove duplicates if any */
 918                 while (cur != NULL && (!strcasecmp(content_type, cur->content_type))) {
 919                         MOD_syslog(LOG_DEBUG, "Unregistered fixed output function for %s\n", content_type);
 920                         p = cur->next;
 921                         if (cur == FixedOutputTable) {
 922                                 FixedOutputTable = p;
 923                         }
 924                         free(cur);
 925                         cur = p;
 926                 }
 927         }
 928 }
 929
 930 void CtdlDestroyFixedOutputHooks(void)
 931 {
 932         FixedOutputHook *cur, *p;
 933
 934         cur = FixedOutputTable;
 935         while (cur != NULL)
 936         {
 937                 MOD_syslog(LOG_DEBUG, "Destroyed fixed output function for %s\n", cur->content_type);
 938                 p = cur->next;
 939                 free(cur);
 940                 cur = p;
 941
 942         }
 943         FixedOutputTable = NULL;
 944 }
 945
 946 /* returns nonzero if we found a hook and used it */
 947 int PerformFixedOutputHooks(char *content_type, char *content, int content_length)
 948 {
 949         FixedOutputHook *fcn;
 950
 951         for (fcn = FixedOutputTable; fcn != NULL; fcn = fcn->next) {
 952                 if (!strcasecmp(content_type, fcn->content_type)) {
 953                         (*fcn->h_function_pointer) (content, content_length);
 954                         return(1);
 955                 }
 956         }
 957         return(0);
 958 }
 959
 960
 961
 962
 963
 964 void CtdlRegisterXmsgHook(int (*fcn_ptr) (char *, char *, char *, char *), int order)
 965 {
 966
 967         XmsgFunctionHook *newfcn;
 968
 969         newfcn = (XmsgFunctionHook *) malloc(sizeof(XmsgFunctionHook));
 970         newfcn->next = XmsgHookTable;
 971         newfcn->order = order;
 972         newfcn->h_function_pointer = fcn_ptr;
 973         XmsgHookTable = newfcn;
 974         MOD_syslog(LOG_DEBUG, "Registered a new x-msg function (priority %d)\n", order);
 975 }
 976
 977
 978 void CtdlUnregisterXmsgHook(int (*fcn_ptr) (char *, char *, char *, char *), int order)
 979 {
 980         XmsgFunctionHook *cur, *p;
 981
 982         for (cur = XmsgHookTable; cur != NULL; cur = cur->next) {
 983                 /* This will also remove duplicates if any */
 984                 while (cur != NULL &&
 985                                 fcn_ptr == cur->h_function_pointer &&
 986                                 order == cur->order) {
 987                         MOD_syslog(LOG_DEBUG, "Unregistered x-msg function "
 988                                    "(priority %d)\n", order);
 989                         p = cur->next;
 990                         if (cur == XmsgHookTable) {
 991                                 XmsgHookTable = p;
 992                         }
 993                         free(cur);
 994                         cur = p;
 995                 }
 996         }
 997 }
 998
 999 void CtdlDestroyXmsgHooks(void)
1000 {
1001         XmsgFunctionHook *cur, *p;
1002
1003         cur = XmsgHookTable;
1004         while (cur != NULL)
1005         {
1006                 MOD_syslog(LOG_DEBUG, "Destroyed x-msg function "
1007                         "(priority %d)\n", cur->order);
1008                 p = cur->next;
1009
1010                 free(cur);
1011                 cur = p;
1012         }
1013         XmsgHookTable = NULL;
1014 }
1015
1016
1017 void CtdlRegisterServiceHook(int tcp_port,
1018                              char *sockpath,
1019                              void (*h_greeting_function) (void),
1020                              void (*h_command_function) (void),
1021                              void (*h_async_function) (void),
1022                              const char *ServiceName)
1023 {
1024         ServiceFunctionHook *newfcn;
1025         char *message;
1026         char error[SIZ];
1027
1028         strcpy(error, "");
1029         newfcn = (ServiceFunctionHook *) malloc(sizeof(ServiceFunctionHook));
1030         message = (char*) malloc (SIZ + SIZ);
1031
1032         newfcn->next = ServiceHookTable;
1033         newfcn->tcp_port = tcp_port;
1034         newfcn->sockpath = sockpath;
1035         newfcn->h_greeting_function = h_greeting_function;
1036         newfcn->h_command_function = h_command_function;
1037         newfcn->h_async_function = h_async_function;
1038         newfcn->ServiceName = ServiceName;
1039
1040         if (sockpath != NULL) {
1041                 newfcn->msock = ctdl_uds_server(sockpath, config.c_maxsessions, error);
1042                 snprintf(message, SIZ, "Unix domain socket '%s': ", sockpath);
1043         }
1044         else if (tcp_port <= 0) {       /* port -1 to disable */
1045                 MOD_syslog(LOG_INFO, "Service %s has been manually disabled, skipping\n", ServiceName);
1046                 free (message);
1047                 free(newfcn);
1048                 return;
1049         }
1050         else {
1051                 newfcn->msock = ctdl_tcp_server(config.c_ip_addr,
1052                                               tcp_port,
1053                                               config.c_maxsessions,
1054                                               error);
1055                 snprintf(message, SIZ, "TCP port %s:%d: (%s) ",
1056                          config.c_ip_addr, tcp_port, ServiceName);
1057         }
1058
1059         if (newfcn->msock > 0) {
1060                 ServiceHookTable = newfcn;
1061                 strcat(message, "registered.");
1062                 MOD_syslog(LOG_INFO, "%s\n", message);
1063         }
1064         else {
1065                 AddPortError(message, error);
1066                 strcat(message, "FAILED.");
1067                 MOD_syslog(LOG_CRIT, "%s\n", message);
1068                 free(newfcn);
1069         }
1070         free(message);
1071 }
1072
1073
1074 void CtdlUnregisterServiceHook(int tcp_port, char *sockpath,
1075                         void (*h_greeting_function) (void),
1076                         void (*h_command_function) (void),
1077                         void (*h_async_function) (void)
1078                         )
1079 {
1080         ServiceFunctionHook *cur, *p;
1081
1082         cur = ServiceHookTable;
1083         while (cur != NULL) {
1084                 /* This will also remove duplicates if any */
1085                 while (cur != NULL &&
1086                                 !(sockpath && cur->sockpath &&
1087                                         strcmp(sockpath, cur->sockpath)) &&
1088                                 h_greeting_function == cur->h_greeting_function &&
1089                                 h_command_function == cur->h_command_function &&
1090                                 h_async_function == cur->h_async_function &&
1091                                 tcp_port == cur->tcp_port) {
1092                         close(cur->msock);
1093                         if (sockpath) {
1094                                 MOD_syslog(LOG_INFO, "Closed UNIX domain socket %s\n",
1095                                            sockpath);
1096                                 unlink(sockpath);
1097                         } else if (tcp_port) {
1098                                 MOD_syslog(LOG_INFO, "Closed TCP port %d\n", tcp_port);
1099                         } else {
1100                                 MOD_syslog(LOG_INFO, "Unregistered service \"%s\"\n", cur->ServiceName);
1101                         }
1102                         p = cur->next;
1103                         if (cur == ServiceHookTable) {
1104                                 ServiceHookTable = p;
1105                         }
1106                         free(cur);
1107                         cur = p;
1108                 }
1109         }
1110 }
1111
1112
1113 void CtdlShutdownServiceHooks(void)
1114 {
1115         /* sort of a duplicate of close_masters() but called earlier */
1116         ServiceFunctionHook *cur;
1117
1118         cur = ServiceHookTable;
1119         while (cur != NULL)
1120         {
1121                 if (cur->msock != -1)
1122                 {
1123                         close(cur->msock);
1124                         cur->msock = -1;
1125                         if (cur->sockpath != NULL){
1126                                 MOD_syslog(LOG_INFO, "[%s] Closed UNIX domain socket %s\n",
1127                                            cur->ServiceName,
1128                                            cur->sockpath);
1129                                 unlink(cur->sockpath);
1130                         } else {
1131                                 MOD_syslog(LOG_INFO, "[%s] closing service\n",
1132                                            cur->ServiceName);
1133                         }
1134                 }
1135                 cur = cur->next;
1136         }
1137 }
1138
1139 void CtdlDestroyServiceHook(void)
1140 {
1141         ServiceFunctionHook *cur, *p;
1142
1143         cur = ServiceHookTable;
1144         while (cur != NULL)
1145         {
1146                 close(cur->msock);
1147                 if (cur->sockpath) {
1148                         MOD_syslog(LOG_INFO, "Closed UNIX domain socket %s\n",
1149                                    cur->sockpath);
1150                         unlink(cur->sockpath);
1151                 } else if (cur->tcp_port) {
1152                         MOD_syslog(LOG_INFO, "Closed TCP port %d\n", cur->tcp_port);
1153                 } else {
1154                         MOD_syslog(LOG_INFO, "Destroyed service \"%s\"\n", cur->ServiceName);
1155                 }
1156                 p = cur->next;
1157                 free(cur);
1158                 cur = p;
1159         }
1160         ServiceHookTable = NULL;
1161 }
1162
1163 void CtdlRegisterSearchFuncHook(void (*fcn_ptr)(int *, long **, const char *), char *name)
1164 {
1165         SearchFunctionHook *newfcn;
1166
1167         if (!name || !fcn_ptr) {
1168                 return;
1169         }
1170
1171         newfcn = (SearchFunctionHook *)
1172             malloc(sizeof(SearchFunctionHook));
1173         newfcn->next = SearchFunctionHookTable;
1174         newfcn->name = name;
1175         newfcn->fcn_ptr = fcn_ptr;
1176         SearchFunctionHookTable = newfcn;
1177
1178         MOD_syslog(LOG_DEBUG, "Registered a new search function (%s)\n", name);
1179 }
1180
1181 void CtdlUnregisterSearchFuncHook(void (*fcn_ptr)(int *, long **, const char *), char *name)
1182 {
1183         SearchFunctionHook *cur, *p;
1184
1185         for (cur = SearchFunctionHookTable; cur != NULL; cur = cur->next) {
1186                 while (fcn_ptr && (cur->fcn_ptr == fcn_ptr) && name && !strcmp(name, cur->name)) {
1187                         MOD_syslog(LOG_DEBUG, "Unregistered search function(%s)\n", name);
1188                         p = cur->next;
1189                         if (cur == SearchFunctionHookTable) {
1190                                 SearchFunctionHookTable = p;
1191                         }
1192                         free (cur);
1193                         cur = p;
1194                 }
1195         }
1196 }
1197
1198 void CtdlDestroySearchHooks(void)
1199 {
1200         SearchFunctionHook *cur, *p;
1201
1202         cur = SearchFunctionHookTable;
1203         SearchFunctionHookTable = NULL;
1204         while (cur != NULL) {
1205                 p = cur->next;
1206                 free(cur);
1207                 cur = p;
1208         }
1209 }
1210
1211 void CtdlModuleDoSearch(int *num_msgs, long **search_msgs, const char *search_string, const char *func_name)
1212 {
1213         SearchFunctionHook *fcn = NULL;
1214
1215         for (fcn = SearchFunctionHookTable; fcn != NULL; fcn = fcn->next) {
1216                 if (!func_name || !strcmp(func_name, fcn->name)) {
1217                         (*fcn->fcn_ptr) (num_msgs, search_msgs, search_string);
1218                         return;
1219                 }
1220         }
1221         *num_msgs = 0;
1222 }
1223
1224
1225 void PerformSessionHooks(int EventType)
1226 {
1227         SessionFunctionHook *fcn = NULL;
1228
1229         for (fcn = SessionHookTable; fcn != NULL; fcn = fcn->next) {
1230                 if (fcn->eventtype == EventType) {
1231                         if (EventType == EVT_TIMER) {
1232                                 pthread_setspecific(MyConKey, NULL);    /* for every hook */
1233                         }
1234                         (*fcn->h_function_pointer) ();
1235                 }
1236         }
1237 }
1238
1239 void PerformUserHooks(ctdluser *usbuf, int EventType)
1240 {
1241         UserFunctionHook *fcn = NULL;
1242
1243         for (fcn = UserHookTable; fcn != NULL; fcn = fcn->next) {
1244                 if (fcn->eventtype == EventType) {
1245                         (*fcn->h_function_pointer) (usbuf);
1246                 }
1247         }
1248 }
1249
1250 int PerformMessageHooks(struct CtdlMessage *msg, int EventType)
1251 {
1252         MessageFunctionHook *fcn = NULL;
1253         int total_retval = 0;
1254
1255         /* Other code may elect to protect this message from server-side
1256          * handlers; if this is the case, don't do anything.
1257         MOD_syslog(LOG_DEBUG, "** Event type is %d, flags are %d\n", EventType, msg->cm_flags);
1258          */
1259         if (msg->cm_flags & CM_SKIP_HOOKS) {
1260                 MODM_syslog(LOG_DEBUG, "Skipping hooks\n");
1261                 return(0);
1262         }
1263
1264         /* Otherwise, run all the hooks appropriate to this event type.
1265          */
1266         for (fcn = MessageHookTable; fcn != NULL; fcn = fcn->next) {
1267                 if (fcn->eventtype == EventType) {
1268                         total_retval = total_retval + (*fcn->h_function_pointer) (msg);
1269                 }
1270         }
1271
1272         /* Return the sum of the return codes from the hook functions.  If
1273          * this is an EVT_BEFORESAVE event, a nonzero return code will cause
1274          * the save operation to abort.
1275          */
1276         return total_retval;
1277 }
1278
1279
1280 int PerformRoomHooks(struct ctdlroom *target_room)
1281 {
1282         RoomFunctionHook *fcn;
1283         int total_retval = 0;
1284
1285         MOD_syslog(LOG_DEBUG, "Performing room hooks for <%s>\n", target_room->QRname);
1286
1287         for (fcn = RoomHookTable; fcn != NULL; fcn = fcn->next) {
1288                 total_retval = total_retval + (*fcn->fcn_ptr) (target_room);
1289         }
1290
1291         /* Return the sum of the return codes from the hook functions.
1292          */
1293         return total_retval;
1294 }
1295
1296
1297 int PerformNetprocHooks(struct CtdlMessage *msg, char *target_room)
1298 {
1299         NetprocFunctionHook *fcn;
1300         int total_retval = 0;
1301
1302         for (fcn = NetprocHookTable; fcn != NULL; fcn = fcn->next) {
1303                 total_retval = total_retval +
1304                         (*fcn->h_function_pointer) (msg, target_room);
1305         }
1306
1307         /* Return the sum of the return codes from the hook functions.
1308          * A nonzero return code will cause the message to *not* be imported.
1309          */
1310         return total_retval;
1311 }
1312
1313
1314 void PerformDeleteHooks(char *room, long msgnum)
1315 {
1316         DeleteFunctionHook *fcn;
1317
1318         for (fcn = DeleteHookTable; fcn != NULL; fcn = fcn->next) {
1319                 (*fcn->h_function_pointer) (room, msgnum);
1320         }
1321 }
1322
1323
1324
1325
1326
1327 int PerformXmsgHooks(char *sender, char *sender_email, char *recp, char *msg)
1328 {
1329         XmsgFunctionHook *fcn;
1330         int total_sent = 0;
1331         int p;
1332
1333         for (p=0; p<MAX_XMSG_PRI; ++p) {
1334                 for (fcn = XmsgHookTable; fcn != NULL; fcn = fcn->next) {
1335                         if (fcn->order == p) {
1336                                 total_sent +=
1337                                         (*fcn->h_function_pointer)
1338                                                 (sender, sender_email, recp, msg);
1339                         }
1340                 }
1341                 /* Break out of the loop if a higher-priority function
1342                  * successfully delivered the message.  This prevents duplicate
1343                  * deliveries to local users simultaneously signed onto
1344                  * remote services.
1345                  */
1346                 if (total_sent) break;
1347         }
1348         return total_sent;
1349 }
1350
1351
1352 /*
1353  * Dirty hack until we impliment a hook mechanism for this
1354  */
1355 void CtdlModuleStartCryptoMsgs(char *ok_response, char *nosup_response, char *error_response)
1356 {
1357 #ifdef HAVE_OPENSSL
1358         CtdlStartTLS (ok_response, nosup_response, error_response);
1359 #endif
1360 }
1361
1362 void DebugModulesEnable(const int n)
1363 {
1364         DebugModules = n;
1365 }
1366 CTDL_MODULE_INIT(modules)
1367 {
1368         if (!threading) {
1369                 CtdlRegisterDebugFlagHook(HKEY("modules"), DebugModulesEnable, &DebugModules);
1370
1371                 CtdlRegisterProtoHook(cmd_log_get, "LOGP", "Print Log-parameters");
1372                 CtdlRegisterProtoHook(cmd_log_set, "LOGS", "Set Log-parameters");
1373         }
1374         return "modules";
1375 }