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         int Priority;
  91         void (*h_function_pointer) (void);
  92         int eventtype;
  93 };
  94 extern SessionFunctionHook *SessionHookTable;
  95
  96
  97 /*
  98  * UserFunctionHook extensions are used for any type of hook which implements
  99  * an operation on a user or username (potentially) other than the one
 100  * operating the current session.
 101  */
 102 typedef struct UserFunctionHook UserFunctionHook;
 103 struct UserFunctionHook {
 104         UserFunctionHook *next;
 105         void (*h_function_pointer) (struct ctdluser *usbuf);
 106         int eventtype;
 107 };
 108 extern UserFunctionHook *UserHookTable;
 109
 110 /*
 111  * MessageFunctionHook extensions are used for hooks which implement handlers
 112  * for various types of message operations (save, read, etc.)
 113  */
 114 typedef struct MessageFunctionHook MessageFunctionHook;
 115 struct MessageFunctionHook {
 116         MessageFunctionHook *next;
 117         int (*h_function_pointer) (struct CtdlMessage *msg);
 118         int eventtype;
 119 };
 120 extern MessageFunctionHook *MessageHookTable;
 121
 122
 123 /*
 124  * NetprocFunctionHook extensions are used for hooks which implement handlers
 125  * for incoming network messages.
 126  */
 127 typedef struct NetprocFunctionHook NetprocFunctionHook;
 128 struct NetprocFunctionHook {
 129         NetprocFunctionHook *next;
 130         int (*h_function_pointer) (struct CtdlMessage *msg, char *target_room);
 131 };
 132 extern NetprocFunctionHook *NetprocHookTable;
 133
 134
 135 /*
 136  * DeleteFunctionHook extensions are used for hooks which get called when a
 137  * message is about to be deleted.
 138  */
 139 typedef struct DeleteFunctionHook DeleteFunctionHook;
 140 struct DeleteFunctionHook {
 141         DeleteFunctionHook *next;
 142         void (*h_function_pointer) (char *target_room, long msgnum);
 143 };
 144 extern DeleteFunctionHook *DeleteHookTable;
 145
 146
 147 /*
 148  * ExpressMessageFunctionHook extensions are used for hooks which implement
 149  * the sending of an instant message through various channels.  Any function
 150  * registered should return the number of recipients to whom the message was
 151  * successfully transmitted.
 152  */
 153 typedef struct XmsgFunctionHook XmsgFunctionHook;
 154 struct XmsgFunctionHook {
 155         XmsgFunctionHook *next;
 156         int (*h_function_pointer) (char *, char *, char *, char *);
 157         int order;
 158 };
 159 extern XmsgFunctionHook *XmsgHookTable;
 160
 161
 162
 163
 164 /*
 165  * RoomFunctionHook extensions are used for hooks which impliment room
 166  * processing functions when new messages are added EG. SIEVE.
 167  */
 168 typedef struct RoomFunctionHook RoomFunctionHook;
 169 struct RoomFunctionHook {
 170         RoomFunctionHook *next;
 171         int (*fcn_ptr) (struct ctdlroom *);
 172 };
 173 extern RoomFunctionHook *RoomHookTable;
 174
 175
 176
 177 typedef struct SearchFunctionHook SearchFunctionHook;
 178 struct SearchFunctionHook {
 179         SearchFunctionHook *next;
 180         void (*fcn_ptr) (int *, long **, const char *);
 181         char *name;
 182 };
 183 extern SearchFunctionHook *SearchFunctionHookTable;
 184
 185
 186 CleanupFunctionHook *CleanupHookTable = NULL;
 187 CleanupFunctionHook *EVCleanupHookTable = NULL;
 188 SessionFunctionHook *SessionHookTable = NULL;
 189 UserFunctionHook *UserHookTable = NULL;
 190 XmsgFunctionHook *XmsgHookTable = NULL;
 191 MessageFunctionHook *MessageHookTable = NULL;
 192 NetprocFunctionHook *NetprocHookTable = NULL;
 193 DeleteFunctionHook *DeleteHookTable = NULL;
 194 ServiceFunctionHook *ServiceHookTable = NULL;
 195 FixedOutputHook *FixedOutputTable = NULL;
 196 RoomFunctionHook *RoomHookTable = NULL;
 197 SearchFunctionHook *SearchFunctionHookTable = NULL;
 198
 199 typedef struct ProtoFunctionHook ProtoFunctionHook;
 200 struct ProtoFunctionHook {
 201         void (*handler) (char *cmdbuf);
 202         const char *cmd;
 203         const char *desc;
 204 };
 205
 206 HashList *ProtoHookList = NULL;
 207
 208
 209 #define ERR_PORT (1 << 1)
 210
 211
 212 static StrBuf *portlist = NULL;
 213
 214 static StrBuf *errormessages = NULL;
 215
 216
 217 long   DetailErrorFlags;
 218 ConstStr Empty = {HKEY("")};
 219 char *ErrSubject = "Startup Problems";
 220 ConstStr ErrGeneral[] = {
 221         {HKEY("Citadel had trouble on starting up. ")},
 222         {HKEY(" This means, citadel won't be the service provider for a specific service you configured it to.\n\n"
 223               "If you don't want citadel to provide these services, turn them off in WebCit via: ")},
 224         {HKEY("To make both ways actualy take place restart the citserver with \"sendcommand down\"\n\n"
 225               "The errors returned by the system were:\n")},
 226         {HKEY("You can recheck the above if you follow this faq item:\n"
 227               "http://www.citadel.org/doku.php?id=faq:mastering_your_os:net#netstat")}
 228 };
 229
 230 ConstStr ErrPortShort = { HKEY("We couldn't bind all ports you configured to be provided by citadel server.\n")};
 231 ConstStr ErrPortWhere = { HKEY("\"Admin->System Preferences->Network\".\n\nThe failed ports and sockets are: ")};
 232 ConstStr ErrPortHint  = { HKEY("If you want citadel to provide you with that functionality, "
 233                                "check the output of \"netstat -lnp\" on linux Servers or \"netstat -na\" on *BSD"
 234                                " and stop the program that binds these ports.\n You should eventually remove "
 235                                " their initscripts in /etc/init.d so that you won't get this trouble once more.\n"
 236                                " After that goto \"Administration -> Shutdown Citadel\" to make Citadel restart & retry to bind this port.\n")};
 237
 238
 239 void LogPrintMessages(long err)
 240 {
 241         StrBuf *Message;
 242         StrBuf *List, *DetailList;
 243         ConstStr *Short, *Where, *Hint;
 244
 245
 246         Message = NewStrBufPlain(NULL,
 247                                  StrLength(portlist) + StrLength(errormessages));
 248
 249         DetailErrorFlags = DetailErrorFlags & ~err;
 250
 251         switch (err)
 252         {
 253         case ERR_PORT:
 254                 Short = &ErrPortShort;
 255                 Where = &ErrPortWhere;
 256                 Hint  = &ErrPortHint;
 257                 List  = portlist;
 258                 DetailList = errormessages;
 259                 break;
 260         default:
 261                 Short = &Empty;
 262                 Where = &Empty;
 263                 Hint  = &Empty;
 264                 List  = NULL;
 265                 DetailList = NULL;
 266         }
 267
 268         StrBufAppendBufPlain(Message, CKEY(ErrGeneral[0]), 0);
 269         StrBufAppendBufPlain(Message, CKEY(*Short), 0);
 270         StrBufAppendBufPlain(Message, CKEY(ErrGeneral[1]), 0);
 271         StrBufAppendBufPlain(Message, CKEY(*Where), 0);
 272         StrBufAppendBuf(Message, List, 0);
 273         StrBufAppendBufPlain(Message, HKEY("\n\n"), 0);
 274         StrBufAppendBufPlain(Message, CKEY(*Hint), 0);
 275         StrBufAppendBufPlain(Message, HKEY("\n\n"), 0);
 276         StrBufAppendBufPlain(Message, CKEY(ErrGeneral[2]), 0);
 277         StrBufAppendBuf(Message, DetailList, 0);
 278         StrBufAppendBufPlain(Message, HKEY("\n\n"), 0);
 279         StrBufAppendBufPlain(Message, CKEY(ErrGeneral[3]), 0);
 280
 281         MOD_syslog(LOG_EMERG, "%s", ChrPtr(Message));
 282         MOD_syslog(LOG_EMERG, "%s", ErrSubject);
 283         quickie_message("Citadel", NULL, NULL, AIDEROOM, ChrPtr(Message), FMT_FIXED, ErrSubject);
 284
 285         FreeStrBuf(&Message);
 286         FreeStrBuf(&List);
 287         FreeStrBuf(&DetailList);
 288 }
 289
 290
 291 void AddPortError(char *Port, char *ErrorMessage)
 292 {
 293         long len;
 294
 295         DetailErrorFlags |= ERR_PORT;
 296
 297         len = StrLength(errormessages);
 298         if (len > 0) StrBufAppendBufPlain(errormessages, HKEY("; "), 0);
 299         else errormessages = NewStrBuf();
 300         StrBufAppendBufPlain(errormessages, ErrorMessage, -1, 0);
 301
 302
 303         len = StrLength(portlist);
 304         if (len > 0) StrBufAppendBufPlain(portlist, HKEY(";"), 0);
 305         else portlist = NewStrBuf();
 306         StrBufAppendBufPlain(portlist, Port, -1, 0);
 307 }
 308
 309
 310 int DLoader_Exec_Cmd(char *cmdbuf)
 311 {
 312         void *vP;
 313         ProtoFunctionHook *p;
 314
 315         if (GetHash(ProtoHookList, cmdbuf, 4, &vP) && (vP != NULL)) {
 316                 p = (ProtoFunctionHook*) vP;
 317                 p->handler(&cmdbuf[5]);
 318                 return 1;
 319         }
 320         return 0;
 321 }
 322
 323 long FourHash(const char *key, long length)
 324 {
 325         int i;
 326         int ret = 0;
 327         const unsigned char *ptr = (const unsigned char*)key;
 328
 329         for (i = 0; i < 4; i++, ptr ++)
 330                 ret = (ret << 8) |
 331                         ( ((*ptr >= 'a') &&
 332                            (*ptr <= 'z'))?
 333                           *ptr - 'a' + 'A':
 334                           *ptr);
 335
 336         return ret;
 337 }
 338
 339 void CtdlRegisterDebugFlagHook(const char *Name, long Len, CtdlDbgFunction F, const int *LogP)
 340 {
 341         LogDebugEntry *E;
 342         if (LogDebugEntryTable == NULL)
 343                 LogDebugEntryTable = NewHash(1, NULL);
 344         E = (LogDebugEntry*) malloc(sizeof(LogDebugEntry));
 345         E->F = F;
 346         E->Name = Name;
 347         E->Len = Len;
 348         E->LogP = LogP;
 349         Put(LogDebugEntryTable, Name, Len, E, NULL);
 350
 351 }
 352 void CtdlSetDebugLogFacilities(const char **Str, long n)
 353 {
 354         StrBuf *Token = NULL;
 355         StrBuf *Buf = NULL;
 356         const char *ch;
 357         int i;
 358         int DoAll = 0;
 359         void *vptr;
 360
 361         for (i=0; i < n; i++){
 362                 if ((Str[i] != NULL) && !IsEmptyStr(Str[i])) {
 363                         if (strcmp(Str[i], "all") == 0) {
 364                                 DoAll = 1;
 365                                 continue;
 366                         }
 367                         Buf = NewStrBufPlain(Str[i], -1);
 368                         ch = NULL;
 369                         if (Token == NULL)
 370                                 Token = NewStrBufPlain(NULL, StrLength(Buf));
 371                         while ((ch != StrBufNOTNULL) &&
 372                                StrBufExtract_NextToken(Token, Buf, &ch, ',')) {
 373                                 if (GetHash(LogDebugEntryTable, SKEY(Token), &vptr) &&
 374                                     (vptr != NULL))
 375                                 {
 376                                         LogDebugEntry *E = (LogDebugEntry*)vptr;
 377                                         E->F(1);
 378                                 }
 379                         }
 380                 }
 381                 FreeStrBuf(&Buf);
 382         }
 383         FreeStrBuf(&Token);
 384         if (DoAll) {
 385                 long HKLen;
 386                 const char *ch;
 387                 HashPos *Pos;
 388
 389                 Pos = GetNewHashPos(LogDebugEntryTable, 0);
 390                 while (GetNextHashPos(LogDebugEntryTable, Pos, &HKLen, &ch, &vptr)) {
 391                         LogDebugEntry *E = (LogDebugEntry*)vptr;
 392                         E->F(1);
 393                 }
 394
 395                 DeleteHashPos(&Pos);
 396         }
 397 }
 398 void cmd_log_get(char *argbuf)
 399 {
 400         long HKLen;
 401         const char *ch;
 402         HashPos *Pos;
 403         void *vptr;
 404
 405         if (CtdlAccessCheck(ac_aide)) return;
 406
 407         cprintf("%d Log modules enabled:\n", LISTING_FOLLOWS);
 408
 409         Pos = GetNewHashPos(LogDebugEntryTable, 0);
 410
 411         while (GetNextHashPos(LogDebugEntryTable, Pos, &HKLen, &ch, &vptr)) {
 412                 LogDebugEntry *E = (LogDebugEntry*)vptr;
 413                 cprintf("%s|%d\n", ch, *E->LogP);
 414         }
 415
 416         DeleteHashPos(&Pos);
 417         cprintf("000\n");
 418 }
 419 void cmd_log_set(char *argbuf)
 420 {
 421         void *vptr;
 422         int lset;
 423         int wlen;
 424         char which[SIZ] = "";
 425
 426         if (CtdlAccessCheck(ac_aide)) return;
 427
 428         wlen = extract_token(which, argbuf, 0, '|', sizeof(which));
 429         if (wlen < 0) wlen = 0;
 430         lset = extract_int(argbuf, 1);
 431         if (lset != 0) lset = 1;
 432         if (GetHash(LogDebugEntryTable, which, wlen, &vptr) &&
 433             (vptr != NULL))
 434         {
 435                 LogDebugEntry *E = (LogDebugEntry*)vptr;
 436                 E->F(lset);
 437                 cprintf("%d %s|%d\n", CIT_OK, which, lset);
 438         }
 439         else {
 440                 cprintf("%d Log setting %s not known\n",
 441                         ERROR, which);
 442         }
 443 }
 444 void CtdlDestroyDebugTable(void)
 445 {
 446
 447         DeleteHash(&LogDebugEntryTable);
 448 }
 449
 450 void CtdlRegisterProtoHook(void (*handler) (char *), char *cmd, char *desc)
 451 {
 452         ProtoFunctionHook *p;
 453
 454         if (ProtoHookList == NULL)
 455                 ProtoHookList = NewHash (1, FourHash);
 456
 457
 458         p = (ProtoFunctionHook *)
 459                 malloc(sizeof(ProtoFunctionHook));
 460
 461         if (p == NULL) {
 462                 fprintf(stderr, "can't malloc new ProtoFunctionHook\n");
 463                 exit(EXIT_FAILURE);
 464         }
 465         p->handler = handler;
 466         p->cmd = cmd;
 467         p->desc = desc;
 468
 469         Put(ProtoHookList, cmd, 4, p, NULL);
 470         MOD_syslog(LOG_DEBUG, "Registered server command %s (%s)\n", cmd, desc);
 471 }
 472
 473 void CtdlDestroyProtoHooks(void)
 474 {
 475
 476         DeleteHash(&ProtoHookList);
 477 }
 478
 479
 480 void CtdlRegisterCleanupHook(void (*fcn_ptr) (void))
 481 {
 482
 483         CleanupFunctionHook *newfcn;
 484
 485         newfcn = (CleanupFunctionHook *)
 486             malloc(sizeof(CleanupFunctionHook));
 487         newfcn->next = CleanupHookTable;
 488         newfcn->h_function_pointer = fcn_ptr;
 489         CleanupHookTable = newfcn;
 490
 491         MODM_syslog(LOG_DEBUG, "Registered a new cleanup function\n");
 492 }
 493
 494
 495 void CtdlUnregisterCleanupHook(void (*fcn_ptr) (void))
 496 {
 497         CleanupFunctionHook *cur, *p, *last;
 498         last = NULL;
 499         cur = CleanupHookTable;
 500         while (cur != NULL)
 501         {
 502                 if (fcn_ptr == cur->h_function_pointer)
 503                 {
 504                         MODM_syslog(LOG_DEBUG, "Unregistered cleanup function\n");
 505                         p = cur->next;
 506
 507                         free(cur);
 508                         cur = NULL;
 509
 510                         if (last != NULL)
 511                                 last->next = p;
 512                         else
 513                                 CleanupHookTable = p;
 514                         cur = p;
 515                 }
 516                 else {
 517                         last = cur;
 518                         cur = cur->next;
 519                 }
 520         }
 521 }
 522
 523
 524 void CtdlDestroyCleanupHooks(void)
 525 {
 526         CleanupFunctionHook *cur, *p;
 527
 528         cur = CleanupHookTable;
 529         while (cur != NULL)
 530         {
 531                 MODM_syslog(LOG_DEBUG, "Destroyed cleanup function\n");
 532                 p = cur->next;
 533                 free(cur);
 534                 cur = p;
 535         }
 536         CleanupHookTable = NULL;
 537 }
 538
 539 void CtdlRegisterEVCleanupHook(void (*fcn_ptr) (void))
 540 {
 541
 542         CleanupFunctionHook *newfcn;
 543
 544         newfcn = (CleanupFunctionHook *)
 545             malloc(sizeof(CleanupFunctionHook));
 546         newfcn->next = EVCleanupHookTable;
 547         newfcn->h_function_pointer = fcn_ptr;
 548         EVCleanupHookTable = newfcn;
 549
 550         MODM_syslog(LOG_DEBUG, "Registered a new cleanup function\n");
 551 }
 552
 553
 554 void CtdlUnregisterEVCleanupHook(void (*fcn_ptr) (void))
 555 {
 556         CleanupFunctionHook *cur, *p, *last;
 557         last = NULL;
 558         cur = EVCleanupHookTable;
 559         while (cur != NULL)
 560         {
 561                 if (fcn_ptr == cur->h_function_pointer)
 562                 {
 563                         MODM_syslog(LOG_DEBUG, "Unregistered cleanup function\n");
 564                         p = cur->next;
 565
 566                         free(cur);
 567                         cur = NULL;
 568
 569                         if (last != NULL)
 570                                 last->next = p;
 571                         else
 572                                 EVCleanupHookTable = p;
 573                         cur = p;
 574                 }
 575                 else {
 576                         last = cur;
 577                         cur = cur->next;
 578                 }
 579         }
 580 }
 581
 582
 583 void CtdlDestroyEVCleanupHooks(void)
 584 {
 585         CleanupFunctionHook *cur, *p;
 586
 587         cur = EVCleanupHookTable;
 588         while (cur != NULL)
 589         {
 590                 MODM_syslog(LOG_DEBUG, "Destroyed cleanup function\n");
 591                 p = cur->next;
 592                 free(cur);
 593                 cur = p;
 594         }
 595         EVCleanupHookTable = NULL;
 596 }
 597
 598
 599 void CtdlRegisterSessionHook(void (*fcn_ptr) (void), int EventType, int Priority)
 600 {
 601         SessionFunctionHook *newfcn;
 602
 603         newfcn = (SessionFunctionHook *)
 604             malloc(sizeof(SessionFunctionHook));
 605         newfcn->Priority = Priority;
 606         newfcn->h_function_pointer = fcn_ptr;
 607         newfcn->eventtype = EventType;
 608
 609         SessionFunctionHook **pfcn;
 610         pfcn = &SessionHookTable;
 611         while ((*pfcn != NULL) &&
 612                ((*pfcn)->Priority < newfcn->Priority) &&
 613                ((*pfcn)->next != NULL))
 614                 pfcn = &(*pfcn)->next;
 615
 616         newfcn->next = *pfcn;
 617         *pfcn = newfcn;
 618
 619         MOD_syslog(LOG_DEBUG, "Registered a new session function (type %d Priority %d)\n",
 620                    EventType, Priority);
 621 }
 622
 623
 624 void CtdlUnregisterSessionHook(void (*fcn_ptr) (void), int EventType)
 625 {
 626         SessionFunctionHook *cur, *p, *last;
 627         last = NULL;
 628         cur = SessionHookTable;
 629         while  (cur != NULL) {
 630                 if ((fcn_ptr == cur->h_function_pointer) &&
 631                     (EventType == cur->eventtype))
 632                 {
 633                         MOD_syslog(LOG_DEBUG, "Unregistered session function (type %d)\n",
 634                                    EventType);
 635                         p = cur->next;
 636
 637                         free(cur);
 638                         cur = NULL;
 639
 640                         if (last != NULL)
 641                                 last->next = p;
 642                         else
 643                                 SessionHookTable = p;
 644                         cur = p;
 645                 }
 646                 else {
 647                         last = cur;
 648                         cur = cur->next;
 649                 }
 650         }
 651 }
 652
 653 void CtdlDestroySessionHooks(void)
 654 {
 655         SessionFunctionHook *cur, *p;
 656
 657         cur = SessionHookTable;
 658         while (cur != NULL)
 659         {
 660                 MODM_syslog(LOG_DEBUG, "Destroyed session function\n");
 661                 p = cur->next;
 662                 free(cur);
 663                 cur = p;
 664         }
 665         SessionHookTable = NULL;
 666 }
 667
 668
 669 void CtdlRegisterUserHook(void (*fcn_ptr) (ctdluser *), int EventType)
 670 {
 671
 672         UserFunctionHook *newfcn;
 673
 674         newfcn = (UserFunctionHook *)
 675             malloc(sizeof(UserFunctionHook));
 676         newfcn->next = UserHookTable;
 677         newfcn->h_function_pointer = fcn_ptr;
 678         newfcn->eventtype = EventType;
 679         UserHookTable = newfcn;
 680
 681         MOD_syslog(LOG_DEBUG, "Registered a new user function (type %d)\n",
 682                    EventType);
 683 }
 684
 685
 686 void CtdlUnregisterUserHook(void (*fcn_ptr) (struct ctdluser *), int EventType)
 687 {
 688         UserFunctionHook *cur, *p, *last;
 689         last = NULL;
 690         cur = UserHookTable;
 691         while (cur != NULL) {
 692                 if ((fcn_ptr == cur->h_function_pointer) &&
 693                     (EventType == cur->eventtype))
 694                 {
 695                         MOD_syslog(LOG_DEBUG, "Unregistered user function (type %d)\n",
 696                                    EventType);
 697                         p = cur->next;
 698
 699                         free(cur);
 700                         cur = NULL;
 701
 702                         if (last != NULL)
 703                                 last->next = p;
 704                         else
 705                                 UserHookTable = p;
 706                         cur = p;
 707                 }
 708                 else {
 709                         last = cur;
 710                         cur = cur->next;
 711                 }
 712         }
 713 }
 714
 715 void CtdlDestroyUserHooks(void)
 716 {
 717         UserFunctionHook *cur, *p;
 718
 719         cur = UserHookTable;
 720         while (cur != NULL)
 721         {
 722                 MODM_syslog(LOG_DEBUG, "Destroyed user function \n");
 723                 p = cur->next;
 724                 free(cur);
 725                 cur = p;
 726         }
 727         UserHookTable = NULL;
 728 }
 729
 730
 731 void CtdlRegisterMessageHook(int (*handler)(struct CtdlMessage *),
 732                                 int EventType)
 733 {
 734
 735         MessageFunctionHook *newfcn;
 736
 737         newfcn = (MessageFunctionHook *)
 738             malloc(sizeof(MessageFunctionHook));
 739         newfcn->next = MessageHookTable;
 740         newfcn->h_function_pointer = handler;
 741         newfcn->eventtype = EventType;
 742         MessageHookTable = newfcn;
 743
 744         MOD_syslog(LOG_DEBUG, "Registered a new message function (type %d)\n",
 745                    EventType);
 746 }
 747
 748
 749 void CtdlUnregisterMessageHook(int (*handler)(struct CtdlMessage *),
 750                 int EventType)
 751 {
 752         MessageFunctionHook *cur, *p, *last;
 753         last = NULL;
 754         cur = MessageHookTable;
 755         while (cur != NULL) {
 756                 if ((handler == cur->h_function_pointer) &&
 757                     (EventType == cur->eventtype))
 758                 {
 759                         MOD_syslog(LOG_DEBUG, "Unregistered message function (type %d)\n",
 760                                    EventType);
 761                         p = cur->next;
 762                         free(cur);
 763                         cur = NULL;
 764
 765                         if (last != NULL)
 766                                 last->next = p;
 767                         else
 768                                 MessageHookTable = p;
 769                         cur = p;
 770                 }
 771                 else {
 772                         last = cur;
 773                         cur = cur->next;
 774                 }
 775         }
 776 }
 777
 778 void CtdlDestroyMessageHook(void)
 779 {
 780         MessageFunctionHook *cur, *p;
 781
 782         cur = MessageHookTable;
 783         while (cur != NULL)
 784         {
 785                 MOD_syslog(LOG_DEBUG, "Destroyed message function (type %d)\n", cur->eventtype);
 786                 p = cur->next;
 787                 free(cur);
 788                 cur = p;
 789         }
 790         MessageHookTable = NULL;
 791 }
 792
 793
 794 void CtdlRegisterRoomHook(int (*fcn_ptr)(struct ctdlroom *))
 795 {
 796         RoomFunctionHook *newfcn;
 797
 798         newfcn = (RoomFunctionHook *)
 799             malloc(sizeof(RoomFunctionHook));
 800         newfcn->next = RoomHookTable;
 801         newfcn->fcn_ptr = fcn_ptr;
 802         RoomHookTable = newfcn;
 803
 804         MODM_syslog(LOG_DEBUG, "Registered a new room function\n");
 805 }
 806
 807
 808 void CtdlUnregisterRoomHook(int (*fcn_ptr)(struct ctdlroom *))
 809 {
 810         RoomFunctionHook *cur, *p, *last;
 811         last = NULL;
 812         cur = RoomHookTable;
 813         while (cur != NULL)
 814         {
 815                 if (fcn_ptr == cur->fcn_ptr) {
 816                         MODM_syslog(LOG_DEBUG, "Unregistered room function\n");
 817                         p = cur->next;
 818
 819                         free(cur);
 820                         cur = NULL;
 821
 822                         if (last != NULL)
 823                                 last->next = p;
 824                         else
 825                                 RoomHookTable = p;
 826                         cur = p;
 827                 }
 828                 else {
 829                         last = cur;
 830                         cur = cur->next;
 831                 }
 832         }
 833 }
 834
 835
 836 void CtdlDestroyRoomHooks(void)
 837 {
 838         RoomFunctionHook *cur, *p;
 839
 840         cur = RoomHookTable;
 841         while (cur != NULL)
 842         {
 843                 MODM_syslog(LOG_DEBUG, "Destroyed room function\n");
 844                 p = cur->next;
 845                 free(cur);
 846                 cur = p;
 847         }
 848         RoomHookTable = NULL;
 849 }
 850
 851 void CtdlRegisterNetprocHook(int (*handler)(struct CtdlMessage *, char *) )
 852 {
 853         NetprocFunctionHook *newfcn;
 854
 855         newfcn = (NetprocFunctionHook *)
 856             malloc(sizeof(NetprocFunctionHook));
 857         newfcn->next = NetprocHookTable;
 858         newfcn->h_function_pointer = handler;
 859         NetprocHookTable = newfcn;
 860
 861         MODM_syslog(LOG_DEBUG, "Registered a new netproc function\n");
 862 }
 863
 864
 865 void CtdlUnregisterNetprocHook(int (*handler)(struct CtdlMessage *, char *) )
 866 {
 867         NetprocFunctionHook *cur, *p, *last;
 868
 869         cur = NetprocHookTable;
 870         last = NULL;
 871
 872         while (cur != NULL) {
 873                 if (handler == cur->h_function_pointer)
 874                 {
 875                         MODM_syslog(LOG_DEBUG, "Unregistered netproc function\n");
 876                         p = cur->next;
 877                         free(cur);
 878                         if (last != NULL) {
 879                                 last->next = p;
 880                         }
 881                         else {
 882                                 NetprocHookTable = p;
 883                         }
 884                         cur = p;
 885                 }
 886                 else {
 887                         last = cur;
 888                         cur = cur->next;
 889                 }
 890         }
 891 }
 892
 893 void CtdlDestroyNetprocHooks(void)
 894 {
 895         NetprocFunctionHook *cur, *p;
 896
 897         cur = NetprocHookTable;
 898         while (cur != NULL)
 899         {
 900                 MODM_syslog(LOG_DEBUG, "Destroyed netproc function\n");
 901                 p = cur->next;
 902                 free(cur);
 903                 cur = p;
 904         }
 905         NetprocHookTable = NULL;
 906 }
 907
 908
 909 void CtdlRegisterDeleteHook(void (*handler)(char *, long) )
 910 {
 911         DeleteFunctionHook *newfcn;
 912
 913         newfcn = (DeleteFunctionHook *)
 914             malloc(sizeof(DeleteFunctionHook));
 915         newfcn->next = DeleteHookTable;
 916         newfcn->h_function_pointer = handler;
 917         DeleteHookTable = newfcn;
 918
 919         MODM_syslog(LOG_DEBUG, "Registered a new delete function\n");
 920 }
 921
 922
 923 void CtdlUnregisterDeleteHook(void (*handler)(char *, long) )
 924 {
 925         DeleteFunctionHook *cur, *p, *last;
 926
 927         last = NULL;
 928         cur = DeleteHookTable;
 929         while (cur != NULL) {
 930                 if (handler == cur->h_function_pointer )
 931                 {
 932                         MODM_syslog(LOG_DEBUG, "Unregistered delete function\n");
 933                         p = cur->next;
 934                         free(cur);
 935
 936                         if (last != NULL)
 937                                 last->next = p;
 938                         else
 939                                 DeleteHookTable = p;
 940
 941                         cur = p;
 942                 }
 943                 else {
 944                         last = cur;
 945                         cur = cur->next;
 946                 }
 947         }
 948 }
 949 void CtdlDestroyDeleteHooks(void)
 950 {
 951         DeleteFunctionHook *cur, *p;
 952
 953         cur = DeleteHookTable;
 954         while (cur != NULL)
 955         {
 956                 MODM_syslog(LOG_DEBUG, "Destroyed delete function\n");
 957                 p = cur->next;
 958                 free(cur);
 959                 cur = p;
 960         }
 961         DeleteHookTable = NULL;
 962 }
 963
 964
 965
 966
 967 void CtdlRegisterFixedOutputHook(char *content_type, void (*handler)(char *, int) )
 968 {
 969         FixedOutputHook *newfcn;
 970
 971         newfcn = (FixedOutputHook *)
 972             malloc(sizeof(FixedOutputHook));
 973         newfcn->next = FixedOutputTable;
 974         newfcn->h_function_pointer = handler;
 975         safestrncpy(newfcn->content_type, content_type, sizeof newfcn->content_type);
 976         FixedOutputTable = newfcn;
 977
 978         MOD_syslog(LOG_DEBUG, "Registered a new fixed output function for %s\n", newfcn->content_type);
 979 }
 980
 981
 982 void CtdlUnregisterFixedOutputHook(char *content_type)
 983 {
 984         FixedOutputHook *cur, *p, *last;
 985
 986         last = NULL;
 987         cur = FixedOutputTable;
 988         while (cur != NULL) {
 989                 /* This will also remove duplicates if any */
 990                 if (!strcasecmp(content_type, cur->content_type)) {
 991                         MOD_syslog(LOG_DEBUG,
 992                                    "Unregistered fixed output function for %s\n",
 993                                    content_type);
 994
 995                         p = cur->next;
 996                         free(cur);
 997
 998                         if (last != NULL)
 999                                 last->next = p;
1000                         else
1001                                 FixedOutputTable = p;
1002
1003                         cur = p;
1004                 }
1005                 else
1006                 {
1007                         last = cur;
1008                         cur = cur->next;
1009                 }
1010         }
1011 }
1012
1013 void CtdlDestroyFixedOutputHooks(void)
1014 {
1015         FixedOutputHook *cur, *p;
1016
1017         cur = FixedOutputTable;
1018         while (cur != NULL)
1019         {
1020                 MOD_syslog(LOG_DEBUG, "Destroyed fixed output function for %s\n", cur->content_type);
1021                 p = cur->next;
1022                 free(cur);
1023                 cur = p;
1024
1025         }
1026         FixedOutputTable = NULL;
1027 }
1028
1029 /* returns nonzero if we found a hook and used it */
1030 int PerformFixedOutputHooks(char *content_type, char *content, int content_length)
1031 {
1032         FixedOutputHook *fcn;
1033
1034         for (fcn = FixedOutputTable; fcn != NULL; fcn = fcn->next) {
1035                 if (!strcasecmp(content_type, fcn->content_type)) {
1036                         (*fcn->h_function_pointer) (content, content_length);
1037                         return(1);
1038                 }
1039         }
1040         return(0);
1041 }
1042
1043
1044
1045
1046
1047 void CtdlRegisterXmsgHook(int (*fcn_ptr) (char *, char *, char *, char *), int order)
1048 {
1049
1050         XmsgFunctionHook *newfcn;
1051
1052         newfcn = (XmsgFunctionHook *) malloc(sizeof(XmsgFunctionHook));
1053         newfcn->next = XmsgHookTable;
1054         newfcn->order = order;
1055         newfcn->h_function_pointer = fcn_ptr;
1056         XmsgHookTable = newfcn;
1057         MOD_syslog(LOG_DEBUG, "Registered a new x-msg function (priority %d)\n", order);
1058 }
1059
1060
1061 void CtdlUnregisterXmsgHook(int (*fcn_ptr) (char *, char *, char *, char *), int order)
1062 {
1063         XmsgFunctionHook *cur, *p, *last;
1064
1065         last = NULL;
1066         cur = XmsgHookTable;
1067         while (cur != NULL) {
1068                 /* This will also remove duplicates if any */
1069                 if (fcn_ptr == cur->h_function_pointer &&
1070                     order == cur->order) {
1071                         MOD_syslog(LOG_DEBUG, "Unregistered x-msg function "
1072                                    "(priority %d)\n", order);
1073                         p = cur->next;
1074                         free(cur);
1075
1076                         if (last != NULL)
1077                                 last->next = p;
1078                         else
1079                                 XmsgHookTable = p;
1080
1081                         cur = p;
1082                 }
1083                 else {
1084                         last = cur;
1085                         cur = cur->next;
1086                 }
1087         }
1088 }
1089
1090 void CtdlDestroyXmsgHooks(void)
1091 {
1092         XmsgFunctionHook *cur, *p;
1093
1094         cur = XmsgHookTable;
1095         while (cur != NULL)
1096         {
1097                 MOD_syslog(LOG_DEBUG, "Destroyed x-msg function "
1098                         "(priority %d)\n", cur->order);
1099                 p = cur->next;
1100
1101                 free(cur);
1102                 cur = p;
1103         }
1104         XmsgHookTable = NULL;
1105 }
1106
1107
1108 void CtdlRegisterServiceHook(int tcp_port,
1109                              char *sockpath,
1110                              void (*h_greeting_function) (void),
1111                              void (*h_command_function) (void),
1112                              void (*h_async_function) (void),
1113                              const char *ServiceName)
1114 {
1115         ServiceFunctionHook *newfcn;
1116         char *message;
1117         char error[SIZ];
1118
1119         strcpy(error, "");
1120         newfcn = (ServiceFunctionHook *) malloc(sizeof(ServiceFunctionHook));
1121         message = (char*) malloc (SIZ + SIZ);
1122
1123         newfcn->next = ServiceHookTable;
1124         newfcn->tcp_port = tcp_port;
1125         newfcn->sockpath = sockpath;
1126         newfcn->h_greeting_function = h_greeting_function;
1127         newfcn->h_command_function = h_command_function;
1128         newfcn->h_async_function = h_async_function;
1129         newfcn->ServiceName = ServiceName;
1130
1131         if (sockpath != NULL) {
1132                 newfcn->msock = ctdl_uds_server(sockpath, config.c_maxsessions, error);
1133                 snprintf(message, SIZ, "Unix domain socket '%s': ", sockpath);
1134         }
1135         else if (tcp_port <= 0) {       /* port -1 to disable */
1136                 MOD_syslog(LOG_INFO, "Service %s has been manually disabled, skipping\n", ServiceName);
1137                 free (message);
1138                 free(newfcn);
1139                 return;
1140         }
1141         else {
1142                 newfcn->msock = ctdl_tcp_server(config.c_ip_addr,
1143                                               tcp_port,
1144                                               config.c_maxsessions,
1145                                               error);
1146                 snprintf(message, SIZ, "TCP port %s:%d: (%s) ",
1147                          config.c_ip_addr, tcp_port, ServiceName);
1148         }
1149
1150         if (newfcn->msock > 0) {
1151                 ServiceHookTable = newfcn;
1152                 strcat(message, "registered.");
1153                 MOD_syslog(LOG_INFO, "%s\n", message);
1154         }
1155         else {
1156                 AddPortError(message, error);
1157                 strcat(message, "FAILED.");
1158                 MOD_syslog(LOG_CRIT, "%s\n", message);
1159                 free(newfcn);
1160         }
1161         free(message);
1162 }
1163
1164
1165 void CtdlUnregisterServiceHook(int tcp_port, char *sockpath,
1166                         void (*h_greeting_function) (void),
1167                         void (*h_command_function) (void),
1168                         void (*h_async_function) (void)
1169                         )
1170 {
1171         ServiceFunctionHook *cur, *p, *last;
1172
1173         last = NULL;
1174         cur = ServiceHookTable;
1175         while (cur != NULL) {
1176                 /* This will also remove duplicates if any */
1177                 if (h_greeting_function == cur->h_greeting_function &&
1178                     h_command_function == cur->h_command_function &&
1179                     h_async_function == cur->h_async_function &&
1180                     tcp_port == cur->tcp_port &&
1181                     !(sockpath && cur->sockpath && strcmp(sockpath, cur->sockpath)) )
1182                 {
1183                         if (cur->msock > 0)
1184                                 close(cur->msock);
1185                         if (sockpath) {
1186                                 MOD_syslog(LOG_INFO, "Closed UNIX domain socket %s\n",
1187                                            sockpath);
1188                                 unlink(sockpath);
1189                         } else if (tcp_port) {
1190                                 MOD_syslog(LOG_INFO, "Closed TCP port %d\n", tcp_port);
1191                         } else {
1192                                 MOD_syslog(LOG_INFO, "Unregistered service \"%s\"\n", cur->ServiceName);
1193                         }
1194                         p = cur->next;
1195                         free(cur);
1196                         if (last != NULL)
1197                                 last->next = p;
1198                         else
1199                                 ServiceHookTable = p;
1200                         cur = p;
1201                 }
1202                 else {
1203                         last = cur;
1204                         cur = cur->next;
1205                 }
1206         }
1207 }
1208
1209
1210 void CtdlShutdownServiceHooks(void)
1211 {
1212         /* sort of a duplicate of close_masters() but called earlier */
1213         ServiceFunctionHook *cur;
1214
1215         cur = ServiceHookTable;
1216         while (cur != NULL)
1217         {
1218                 if (cur->msock != -1)
1219                 {
1220                         close(cur->msock);
1221                         cur->msock = -1;
1222                         if (cur->sockpath != NULL){
1223                                 MOD_syslog(LOG_INFO, "[%s] Closed UNIX domain socket %s\n",
1224                                            cur->ServiceName,
1225                                            cur->sockpath);
1226                                 unlink(cur->sockpath);
1227                         } else {
1228                                 MOD_syslog(LOG_INFO, "[%s] closing service\n",
1229                                            cur->ServiceName);
1230                         }
1231                 }
1232                 cur = cur->next;
1233         }
1234 }
1235
1236 void CtdlDestroyServiceHook(void)
1237 {
1238         ServiceFunctionHook *cur, *p;
1239
1240         cur = ServiceHookTable;
1241         while (cur != NULL)
1242         {
1243                 close(cur->msock);
1244                 if (cur->sockpath) {
1245                         MOD_syslog(LOG_INFO, "Closed UNIX domain socket %s\n",
1246                                    cur->sockpath);
1247                         unlink(cur->sockpath);
1248                 } else if (cur->tcp_port) {
1249                         MOD_syslog(LOG_INFO, "Closed TCP port %d\n", cur->tcp_port);
1250                 } else {
1251                         MOD_syslog(LOG_INFO, "Destroyed service \"%s\"\n", cur->ServiceName);
1252                 }
1253                 p = cur->next;
1254                 free(cur);
1255                 cur = p;
1256         }
1257         ServiceHookTable = NULL;
1258 }
1259
1260 void CtdlRegisterSearchFuncHook(void (*fcn_ptr)(int *, long **, const char *), char *name)
1261 {
1262         SearchFunctionHook *newfcn;
1263
1264         if (!name || !fcn_ptr) {
1265                 return;
1266         }
1267
1268         newfcn = (SearchFunctionHook *)
1269             malloc(sizeof(SearchFunctionHook));
1270         newfcn->next = SearchFunctionHookTable;
1271         newfcn->name = name;
1272         newfcn->fcn_ptr = fcn_ptr;
1273         SearchFunctionHookTable = newfcn;
1274
1275         MOD_syslog(LOG_DEBUG, "Registered a new search function (%s)\n", name);
1276 }
1277
1278 void CtdlUnregisterSearchFuncHook(void (*fcn_ptr)(int *, long **, const char *), char *name)
1279 {
1280         SearchFunctionHook *cur, *p, *last;
1281
1282         last = NULL;
1283         cur = SearchFunctionHookTable;
1284         while (cur != NULL) {
1285                 if (fcn_ptr &&
1286                     (cur->fcn_ptr == fcn_ptr) &&
1287                     name && !strcmp(name, cur->name))
1288                 {
1289                         MOD_syslog(LOG_DEBUG, "Unregistered search function(%s)\n", name);
1290                         p = cur->next;
1291                         free (cur);
1292                         if (last != NULL)
1293                                 last->next = p;
1294                         else
1295                                 SearchFunctionHookTable = p;
1296                         cur = p;
1297                 }
1298                 else {
1299                         last = cur;
1300                         cur = cur->next;
1301                 }
1302         }
1303 }
1304
1305 void CtdlDestroySearchHooks(void)
1306 {
1307         SearchFunctionHook *cur, *p;
1308
1309         cur = SearchFunctionHookTable;
1310         SearchFunctionHookTable = NULL;
1311         while (cur != NULL) {
1312                 p = cur->next;
1313                 free(cur);
1314                 cur = p;
1315         }
1316 }
1317
1318 void CtdlModuleDoSearch(int *num_msgs, long **search_msgs, const char *search_string, const char *func_name)
1319 {
1320         SearchFunctionHook *fcn = NULL;
1321
1322         for (fcn = SearchFunctionHookTable; fcn != NULL; fcn = fcn->next) {
1323                 if (!func_name || !strcmp(func_name, fcn->name)) {
1324                         (*fcn->fcn_ptr) (num_msgs, search_msgs, search_string);
1325                         return;
1326                 }
1327         }
1328         *num_msgs = 0;
1329 }
1330
1331
1332 void PerformSessionHooks(int EventType)
1333 {
1334         SessionFunctionHook *fcn = NULL;
1335
1336         for (fcn = SessionHookTable; fcn != NULL; fcn = fcn->next) {
1337                 if (fcn->eventtype == EventType) {
1338                         if (EventType == EVT_TIMER) {
1339                                 pthread_setspecific(MyConKey, NULL);    /* for every hook */
1340                         }
1341                         (*fcn->h_function_pointer) ();
1342                 }
1343         }
1344 }
1345
1346 void PerformUserHooks(ctdluser *usbuf, int EventType)
1347 {
1348         UserFunctionHook *fcn = NULL;
1349
1350         for (fcn = UserHookTable; fcn != NULL; fcn = fcn->next) {
1351                 if (fcn->eventtype == EventType) {
1352                         (*fcn->h_function_pointer) (usbuf);
1353                 }
1354         }
1355 }
1356
1357 int PerformMessageHooks(struct CtdlMessage *msg, int EventType)
1358 {
1359         MessageFunctionHook *fcn = NULL;
1360         int total_retval = 0;
1361
1362         /* Other code may elect to protect this message from server-side
1363          * handlers; if this is the case, don't do anything.
1364         MOD_syslog(LOG_DEBUG, "** Event type is %d, flags are %d\n", EventType, msg->cm_flags);
1365          */
1366         if (msg->cm_flags & CM_SKIP_HOOKS) {
1367                 MODM_syslog(LOG_DEBUG, "Skipping hooks\n");
1368                 return(0);
1369         }
1370
1371         /* Otherwise, run all the hooks appropriate to this event type.
1372          */
1373         for (fcn = MessageHookTable; fcn != NULL; fcn = fcn->next) {
1374                 if (fcn->eventtype == EventType) {
1375                         total_retval = total_retval + (*fcn->h_function_pointer) (msg);
1376                 }
1377         }
1378
1379         /* Return the sum of the return codes from the hook functions.  If
1380          * this is an EVT_BEFORESAVE event, a nonzero return code will cause
1381          * the save operation to abort.
1382          */
1383         return total_retval;
1384 }
1385
1386
1387 int PerformRoomHooks(struct ctdlroom *target_room)
1388 {
1389         RoomFunctionHook *fcn;
1390         int total_retval = 0;
1391
1392         MOD_syslog(LOG_DEBUG, "Performing room hooks for <%s>\n", target_room->QRname);
1393
1394         for (fcn = RoomHookTable; fcn != NULL; fcn = fcn->next) {
1395                 total_retval = total_retval + (*fcn->fcn_ptr) (target_room);
1396         }
1397
1398         /* Return the sum of the return codes from the hook functions.
1399          */
1400         return total_retval;
1401 }
1402
1403
1404 int PerformNetprocHooks(struct CtdlMessage *msg, char *target_room)
1405 {
1406         NetprocFunctionHook *fcn;
1407         int total_retval = 0;
1408
1409         for (fcn = NetprocHookTable; fcn != NULL; fcn = fcn->next) {
1410                 total_retval = total_retval +
1411                         (*fcn->h_function_pointer) (msg, target_room);
1412         }
1413
1414         /* Return the sum of the return codes from the hook functions.
1415          * A nonzero return code will cause the message to *not* be imported.
1416          */
1417         return total_retval;
1418 }
1419
1420
1421 void PerformDeleteHooks(char *room, long msgnum)
1422 {
1423         DeleteFunctionHook *fcn;
1424
1425         for (fcn = DeleteHookTable; fcn != NULL; fcn = fcn->next) {
1426                 (*fcn->h_function_pointer) (room, msgnum);
1427         }
1428 }
1429
1430
1431
1432
1433
1434 int PerformXmsgHooks(char *sender, char *sender_email, char *recp, char *msg)
1435 {
1436         XmsgFunctionHook *fcn;
1437         int total_sent = 0;
1438         int p;
1439
1440         for (p=0; p<MAX_XMSG_PRI; ++p) {
1441                 for (fcn = XmsgHookTable; fcn != NULL; fcn = fcn->next) {
1442                         if (fcn->order == p) {
1443                                 total_sent +=
1444                                         (*fcn->h_function_pointer)
1445                                                 (sender, sender_email, recp, msg);
1446                         }
1447                 }
1448                 /* Break out of the loop if a higher-priority function
1449                  * successfully delivered the message.  This prevents duplicate
1450                  * deliveries to local users simultaneously signed onto
1451                  * remote services.
1452                  */
1453                 if (total_sent) break;
1454         }
1455         return total_sent;
1456 }
1457
1458
1459 /*
1460  * Dirty hack until we impliment a hook mechanism for this
1461  */
1462 void CtdlModuleStartCryptoMsgs(char *ok_response, char *nosup_response, char *error_response)
1463 {
1464 #ifdef HAVE_OPENSSL
1465         CtdlStartTLS (ok_response, nosup_response, error_response);
1466 #endif
1467 }
1468
1469 void DebugModulesEnable(const int n)
1470 {
1471         DebugModules = n;
1472 }
1473 CTDL_MODULE_INIT(modules)
1474 {
1475         if (!threading) {
1476                 CtdlRegisterDebugFlagHook(HKEY("modules"), DebugModulesEnable, &DebugModules);
1477
1478                 CtdlRegisterProtoHook(cmd_log_get, "LOGP", "Print Log-parameters");
1479                 CtdlRegisterProtoHook(cmd_log_set, "LOGS", "Set Log-parameters");
1480         }
1481         return "modules";
1482 }