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, version 3.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  */
  15
  16 #include "sysdep.h"
  17 #include <stdio.h>
  18 #include <stdlib.h>
  19 #include <unistd.h>
  20 #include <sys/types.h>
  21 #include <dirent.h>
  22 #include <string.h>
  23 #include <limits.h>
  24 #include <ctype.h>
  25 #include <syslog.h>
  26 #include <libcitadel.h>
  27 #include "citadel.h"
  28 #include "server.h"
  29 #include "serv_extensions.h"
  30 #include "sysdep_decls.h"
  31 #include "msgbase.h"
  32 #include "config.h"
  33
  34 #include "modules/crypto/serv_crypto.h" /* Needed until a universal crypto startup hook is implimented for CtdlStartTLS */
  35
  36 #include "ctdl_module.h"
  37
  38
  39 int DebugModules = 0;
  40
  41 /*
  42  * Structure defentitions for hook tables
  43  */
  44
  45 typedef struct __LogDebugEntry {
  46         CtdlDbgFunction F;
  47         const char *Name;
  48         long Len;
  49         const int *LogP;
  50 } LogDebugEntry;
  51 HashList *LogDebugEntryTable = NULL;
  52
  53 typedef struct LogFunctionHook LogFunctionHook;
  54 struct LogFunctionHook {
  55         LogFunctionHook *next;
  56         int loglevel;
  57         void (*h_function_pointer) (char *);
  58 };
  59 extern LogFunctionHook *LogHookTable;
  60
  61 typedef struct FixedOutputHook FixedOutputHook;
  62 struct FixedOutputHook {
  63         FixedOutputHook *next;
  64         char content_type[64];
  65         void (*h_function_pointer) (char *, int);
  66 };
  67 extern FixedOutputHook *FixedOutputTable;
  68
  69
  70
  71 /*
  72  * SessionFunctionHook extensions are used for any type of hook for which
  73  * the context in which it's being called (which is determined by the event
  74  * type) will make it obvious for the hook function to know where to look for
  75  * pertinent data.
  76  */
  77 typedef struct SessionFunctionHook SessionFunctionHook;
  78 struct SessionFunctionHook {
  79         SessionFunctionHook *next;
  80         int Priority;
  81         void (*h_function_pointer) (void);
  82         int eventtype;
  83 };
  84 extern SessionFunctionHook *SessionHookTable;
  85
  86
  87 /*
  88  * UserFunctionHook extensions are used for any type of hook which implements
  89  * an operation on a user or username (potentially) other than the one
  90  * operating the current session.
  91  */
  92 typedef struct UserFunctionHook UserFunctionHook;
  93 struct UserFunctionHook {
  94         UserFunctionHook *next;
  95         void (*h_function_pointer) (struct ctdluser *usbuf);
  96         int eventtype;
  97 };
  98 extern UserFunctionHook *UserHookTable;
  99
 100 /*
 101  * MessageFunctionHook extensions are used for hooks which implement handlers
 102  * for various types of message operations (save, read, etc.)
 103  */
 104 typedef struct MessageFunctionHook MessageFunctionHook;
 105 struct MessageFunctionHook {
 106         MessageFunctionHook *next;
 107         int (*h_function_pointer) (struct CtdlMessage *msg);
 108         int eventtype;
 109 };
 110 extern MessageFunctionHook *MessageHookTable;
 111
 112
 113 /*
 114  * NetprocFunctionHook extensions are used for hooks which implement handlers
 115  * for incoming network messages.
 116  */
 117 typedef struct NetprocFunctionHook NetprocFunctionHook;
 118 struct NetprocFunctionHook {
 119         NetprocFunctionHook *next;
 120         int (*h_function_pointer) (struct CtdlMessage *msg, char *target_room);
 121 };
 122 extern NetprocFunctionHook *NetprocHookTable;
 123
 124
 125 /*
 126  * DeleteFunctionHook extensions are used for hooks which get called when a
 127  * message is about to be deleted.
 128  */
 129 typedef struct DeleteFunctionHook DeleteFunctionHook;
 130 struct DeleteFunctionHook {
 131         DeleteFunctionHook *next;
 132         void (*h_function_pointer) (char *target_room, long msgnum);
 133 };
 134 extern DeleteFunctionHook *DeleteHookTable;
 135
 136
 137 /*
 138  * ExpressMessageFunctionHook extensions are used for hooks which implement
 139  * the sending of an instant message through various channels.  Any function
 140  * registered should return the number of recipients to whom the message was
 141  * successfully transmitted.
 142  */
 143 typedef struct XmsgFunctionHook XmsgFunctionHook;
 144 struct XmsgFunctionHook {
 145         XmsgFunctionHook *next;
 146         int (*h_function_pointer) (char *, char *, char *, char *);
 147         int order;
 148 };
 149 extern XmsgFunctionHook *XmsgHookTable;
 150
 151
 152
 153
 154 /*
 155  * RoomFunctionHook extensions are used for hooks which impliment room
 156  * processing functions when new messages are added EG. SIEVE.
 157  */
 158 typedef struct RoomFunctionHook RoomFunctionHook;
 159 struct RoomFunctionHook {
 160         RoomFunctionHook *next;
 161         int (*fcn_ptr) (struct ctdlroom *);
 162 };
 163 extern RoomFunctionHook *RoomHookTable;
 164
 165
 166
 167 typedef struct SearchFunctionHook SearchFunctionHook;
 168 struct SearchFunctionHook {
 169         SearchFunctionHook *next;
 170         void (*fcn_ptr) (int *, long **, const char *);
 171         char *name;
 172 };
 173 extern SearchFunctionHook *SearchFunctionHookTable;
 174
 175
 176 CleanupFunctionHook *CleanupHookTable = NULL;
 177 CleanupFunctionHook *EVCleanupHookTable = NULL;
 178 SessionFunctionHook *SessionHookTable = NULL;
 179 UserFunctionHook *UserHookTable = NULL;
 180 XmsgFunctionHook *XmsgHookTable = NULL;
 181 MessageFunctionHook *MessageHookTable = NULL;
 182 NetprocFunctionHook *NetprocHookTable = NULL;
 183 DeleteFunctionHook *DeleteHookTable = NULL;
 184 ServiceFunctionHook *ServiceHookTable = NULL;
 185 FixedOutputHook *FixedOutputTable = NULL;
 186 RoomFunctionHook *RoomHookTable = NULL;
 187 SearchFunctionHook *SearchFunctionHookTable = NULL;
 188
 189 typedef struct ProtoFunctionHook ProtoFunctionHook;
 190 struct ProtoFunctionHook {
 191         void (*handler) (char *cmdbuf);
 192         const char *cmd;
 193         const char *desc;
 194 };
 195
 196 HashList *ProtoHookList = NULL;
 197
 198
 199 #define ERR_PORT (1 << 1)
 200
 201
 202 static StrBuf *portlist = NULL;
 203
 204 static StrBuf *errormessages = NULL;
 205
 206
 207 long   DetailErrorFlags;
 208 ConstStr Empty = {HKEY("")};
 209 char *ErrSubject = "Startup Problems";
 210 ConstStr ErrGeneral[] = {
 211         {HKEY("Citadel had trouble on starting up. ")},
 212         {HKEY(" This means, citadel won't be the service provider for a specific service you configured it to.\n\n"
 213               "If you don't want citadel to provide these services, turn them off in WebCit via: ")},
 214         {HKEY("To make both ways actualy take place restart the citserver with \"sendcommand down\"\n\n"
 215               "The errors returned by the system were:\n")},
 216         {HKEY("You can recheck the above if you follow this faq item:\n"
 217               "http://www.citadel.org/doku.php?id=faq:mastering_your_os:net#netstat")}
 218 };
 219
 220 ConstStr ErrPortShort = { HKEY("We couldn't bind all ports you configured to be provided by citadel server.\n")};
 221 ConstStr ErrPortWhere = { HKEY("\"Admin->System Preferences->Network\".\n\nThe failed ports and sockets are: ")};
 222 ConstStr ErrPortHint  = { HKEY("If you want citadel to provide you with that functionality, "
 223                                "check the output of \"netstat -lnp\" on linux Servers or \"netstat -na\" on *BSD"
 224                                " and stop the program that binds these ports.\n You should eventually remove "
 225                                " their initscripts in /etc/init.d so that you won't get this trouble once more.\n"
 226                                " After that goto \"Administration -> Shutdown Citadel\" to make Citadel restart & retry to bind this port.\n")};
 227
 228
 229 void LogPrintMessages(long err)
 230 {
 231         StrBuf *Message;
 232         StrBuf *List, *DetailList;
 233         ConstStr *Short, *Where, *Hint;
 234
 235
 236         Message = NewStrBufPlain(NULL,
 237                                  StrLength(portlist) + StrLength(errormessages));
 238
 239         DetailErrorFlags = DetailErrorFlags & ~err;
 240
 241         switch (err)
 242         {
 243         case ERR_PORT:
 244                 Short = &ErrPortShort;
 245                 Where = &ErrPortWhere;
 246                 Hint  = &ErrPortHint;
 247                 List  = portlist;
 248                 DetailList = errormessages;
 249                 break;
 250         default:
 251                 Short = &Empty;
 252                 Where = &Empty;
 253                 Hint  = &Empty;
 254                 List  = NULL;
 255                 DetailList = NULL;
 256         }
 257
 258         StrBufAppendBufPlain(Message, CKEY(ErrGeneral[0]), 0);
 259         StrBufAppendBufPlain(Message, CKEY(*Short), 0);
 260         StrBufAppendBufPlain(Message, CKEY(ErrGeneral[1]), 0);
 261         StrBufAppendBufPlain(Message, CKEY(*Where), 0);
 262         StrBufAppendBuf(Message, List, 0);
 263         StrBufAppendBufPlain(Message, HKEY("\n\n"), 0);
 264         StrBufAppendBufPlain(Message, CKEY(*Hint), 0);
 265         StrBufAppendBufPlain(Message, HKEY("\n\n"), 0);
 266         StrBufAppendBufPlain(Message, CKEY(ErrGeneral[2]), 0);
 267         StrBufAppendBuf(Message, DetailList, 0);
 268         StrBufAppendBufPlain(Message, HKEY("\n\n"), 0);
 269         StrBufAppendBufPlain(Message, CKEY(ErrGeneral[3]), 0);
 270
 271         MOD_syslog(LOG_EMERG, "%s", ChrPtr(Message));
 272         MOD_syslog(LOG_EMERG, "%s", ErrSubject);
 273         quickie_message("Citadel", NULL, NULL, AIDEROOM, ChrPtr(Message), FMT_FIXED, ErrSubject);
 274
 275         FreeStrBuf(&Message);
 276         FreeStrBuf(&List);
 277         FreeStrBuf(&DetailList);
 278 }
 279
 280
 281 void AddPortError(char *Port, char *ErrorMessage)
 282 {
 283         long len;
 284
 285         DetailErrorFlags |= ERR_PORT;
 286
 287         len = StrLength(errormessages);
 288         if (len > 0) StrBufAppendBufPlain(errormessages, HKEY("; "), 0);
 289         else errormessages = NewStrBuf();
 290         StrBufAppendBufPlain(errormessages, ErrorMessage, -1, 0);
 291
 292
 293         len = StrLength(portlist);
 294         if (len > 0) StrBufAppendBufPlain(portlist, HKEY(";"), 0);
 295         else portlist = NewStrBuf();
 296         StrBufAppendBufPlain(portlist, Port, -1, 0);
 297 }
 298
 299
 300 int DLoader_Exec_Cmd(char *cmdbuf)
 301 {
 302         void *vP;
 303         ProtoFunctionHook *p;
 304
 305         if (GetHash(ProtoHookList, cmdbuf, 4, &vP) && (vP != NULL)) {
 306                 p = (ProtoFunctionHook*) vP;
 307                 p->handler(&cmdbuf[5]);
 308                 return 1;
 309         }
 310         return 0;
 311 }
 312
 313 long FourHash(const char *key, long length)
 314 {
 315         int i;
 316         int ret = 0;
 317         const unsigned char *ptr = (const unsigned char*)key;
 318
 319         for (i = 0; i < 4; i++, ptr ++)
 320                 ret = (ret << 8) |
 321                         ( ((*ptr >= 'a') &&
 322                            (*ptr <= 'z'))?
 323                           *ptr - 'a' + 'A':
 324                           *ptr);
 325
 326         return ret;
 327 }
 328
 329 void CtdlRegisterDebugFlagHook(const char *Name, long Len, CtdlDbgFunction F, const int *LogP)
 330 {
 331         LogDebugEntry *E;
 332         if (LogDebugEntryTable == NULL)
 333                 LogDebugEntryTable = NewHash(1, NULL);
 334         E = (LogDebugEntry*) malloc(sizeof(LogDebugEntry));
 335         E->F = F;
 336         E->Name = Name;
 337         E->Len = Len;
 338         E->LogP = LogP;
 339         Put(LogDebugEntryTable, Name, Len, E, NULL);
 340
 341 }
 342 void CtdlSetDebugLogFacilities(const char **Str, long n)
 343 {
 344         StrBuf *Token = NULL;
 345         StrBuf *Buf = NULL;
 346         const char *ch;
 347         int i;
 348         int DoAll = 0;
 349         void *vptr;
 350
 351         for (i=0; i < n; i++){
 352                 if ((Str[i] != NULL) && !IsEmptyStr(Str[i])) {
 353                         if (strcmp(Str[i], "all") == 0) {
 354                                 DoAll = 1;
 355                                 continue;
 356                         }
 357                         Buf = NewStrBufPlain(Str[i], -1);
 358                         ch = NULL;
 359                         if (Token == NULL)
 360                                 Token = NewStrBufPlain(NULL, StrLength(Buf));
 361                         while ((ch != StrBufNOTNULL) &&
 362                                StrBufExtract_NextToken(Token, Buf, &ch, ',')) {
 363                                 if (GetHash(LogDebugEntryTable, SKEY(Token), &vptr) &&
 364                                     (vptr != NULL))
 365                                 {
 366                                         LogDebugEntry *E = (LogDebugEntry*)vptr;
 367                                         E->F(1);
 368                                 }
 369                         }
 370                 }
 371                 FreeStrBuf(&Buf);
 372         }
 373         FreeStrBuf(&Token);
 374         if (DoAll) {
 375                 long HKLen;
 376                 const char *ch;
 377                 HashPos *Pos;
 378
 379                 Pos = GetNewHashPos(LogDebugEntryTable, 0);
 380                 while (GetNextHashPos(LogDebugEntryTable, Pos, &HKLen, &ch, &vptr)) {
 381                         LogDebugEntry *E = (LogDebugEntry*)vptr;
 382                         E->F(1);
 383                 }
 384
 385                 DeleteHashPos(&Pos);
 386         }
 387 }
 388 void cmd_log_get(char *argbuf)
 389 {
 390         long HKLen;
 391         const char *ch;
 392         HashPos *Pos;
 393         void *vptr;
 394
 395         if (CtdlAccessCheck(ac_aide)) return;
 396
 397         cprintf("%d Log modules enabled:\n", LISTING_FOLLOWS);
 398
 399         Pos = GetNewHashPos(LogDebugEntryTable, 0);
 400
 401         while (GetNextHashPos(LogDebugEntryTable, Pos, &HKLen, &ch, &vptr)) {
 402                 LogDebugEntry *E = (LogDebugEntry*)vptr;
 403                 cprintf("%s|%d\n", ch, *E->LogP);
 404         }
 405
 406         DeleteHashPos(&Pos);
 407         cprintf("000\n");
 408 }
 409 void cmd_log_set(char *argbuf)
 410 {
 411         void *vptr;
 412         int lset;
 413         int wlen;
 414         char which[SIZ] = "";
 415
 416         if (CtdlAccessCheck(ac_aide)) return;
 417
 418         wlen = extract_token(which, argbuf, 0, '|', sizeof(which));
 419         if (wlen < 0) wlen = 0;
 420         lset = extract_int(argbuf, 1);
 421         if (lset != 0) lset = 1;
 422         if (GetHash(LogDebugEntryTable, which, wlen, &vptr) &&
 423             (vptr != NULL))
 424         {
 425                 LogDebugEntry *E = (LogDebugEntry*)vptr;
 426                 E->F(lset);
 427                 cprintf("%d %s|%d\n", CIT_OK, which, lset);
 428         }
 429         else {
 430                 cprintf("%d Log setting %s not known\n",
 431                         ERROR, which);
 432         }
 433 }
 434 void CtdlDestroyDebugTable(void)
 435 {
 436
 437         DeleteHash(&LogDebugEntryTable);
 438 }
 439
 440 void CtdlRegisterProtoHook(void (*handler) (char *), char *cmd, char *desc)
 441 {
 442         ProtoFunctionHook *p;
 443
 444         if (ProtoHookList == NULL)
 445                 ProtoHookList = NewHash (1, FourHash);
 446
 447
 448         p = (ProtoFunctionHook *)
 449                 malloc(sizeof(ProtoFunctionHook));
 450
 451         if (p == NULL) {
 452                 fprintf(stderr, "can't malloc new ProtoFunctionHook\n");
 453                 exit(EXIT_FAILURE);
 454         }
 455         p->handler = handler;
 456         p->cmd = cmd;
 457         p->desc = desc;
 458
 459         Put(ProtoHookList, cmd, 4, p, NULL);
 460         MOD_syslog(LOG_DEBUG, "Registered server command %s (%s)\n", cmd, desc);
 461 }
 462
 463 void CtdlDestroyProtoHooks(void)
 464 {
 465
 466         DeleteHash(&ProtoHookList);
 467 }
 468
 469
 470 void CtdlRegisterCleanupHook(void (*fcn_ptr) (void))
 471 {
 472
 473         CleanupFunctionHook *newfcn;
 474
 475         newfcn = (CleanupFunctionHook *)
 476             malloc(sizeof(CleanupFunctionHook));
 477         newfcn->next = CleanupHookTable;
 478         newfcn->h_function_pointer = fcn_ptr;
 479         CleanupHookTable = newfcn;
 480
 481         MODM_syslog(LOG_DEBUG, "Registered a new cleanup function\n");
 482 }
 483
 484
 485 void CtdlUnregisterCleanupHook(void (*fcn_ptr) (void))
 486 {
 487         CleanupFunctionHook *cur, *p, *last;
 488         last = NULL;
 489         cur = CleanupHookTable;
 490         while (cur != NULL)
 491         {
 492                 if (fcn_ptr == cur->h_function_pointer)
 493                 {
 494                         MODM_syslog(LOG_DEBUG, "Unregistered cleanup function\n");
 495                         p = cur->next;
 496
 497                         free(cur);
 498                         cur = NULL;
 499
 500                         if (last != NULL)
 501                                 last->next = p;
 502                         else
 503                                 CleanupHookTable = p;
 504                         cur = p;
 505                 }
 506                 else {
 507                         last = cur;
 508                         cur = cur->next;
 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, *last;
 547         last = NULL;
 548         cur = EVCleanupHookTable;
 549         while (cur != NULL)
 550         {
 551                 if (fcn_ptr == cur->h_function_pointer)
 552                 {
 553                         MODM_syslog(LOG_DEBUG, "Unregistered cleanup function\n");
 554                         p = cur->next;
 555
 556                         free(cur);
 557                         cur = NULL;
 558
 559                         if (last != NULL)
 560                                 last->next = p;
 561                         else
 562                                 EVCleanupHookTable = p;
 563                         cur = p;
 564                 }
 565                 else {
 566                         last = cur;
 567                         cur = cur->next;
 568                 }
 569         }
 570 }
 571
 572
 573 void CtdlDestroyEVCleanupHooks(void)
 574 {
 575         CleanupFunctionHook *cur, *p;
 576
 577         cur = EVCleanupHookTable;
 578         while (cur != NULL)
 579         {
 580                 MODM_syslog(LOG_DEBUG, "Destroyed cleanup function\n");
 581                 p = cur->next;
 582                 free(cur);
 583                 cur = p;
 584         }
 585         EVCleanupHookTable = NULL;
 586 }
 587
 588
 589 void CtdlRegisterSessionHook(void (*fcn_ptr) (void), int EventType, int Priority)
 590 {
 591         SessionFunctionHook *newfcn;
 592
 593         newfcn = (SessionFunctionHook *)
 594             malloc(sizeof(SessionFunctionHook));
 595         newfcn->Priority = Priority;
 596         newfcn->h_function_pointer = fcn_ptr;
 597         newfcn->eventtype = EventType;
 598
 599         SessionFunctionHook **pfcn;
 600         pfcn = &SessionHookTable;
 601         while ((*pfcn != NULL) &&
 602                ((*pfcn)->Priority < newfcn->Priority) &&
 603                ((*pfcn)->next != NULL))
 604                 pfcn = &(*pfcn)->next;
 605
 606         newfcn->next = *pfcn;
 607         *pfcn = newfcn;
 608
 609         MOD_syslog(LOG_DEBUG, "Registered a new session function (type %d Priority %d)\n",
 610                    EventType, Priority);
 611 }
 612
 613
 614 void CtdlUnregisterSessionHook(void (*fcn_ptr) (void), int EventType)
 615 {
 616         SessionFunctionHook *cur, *p, *last;
 617         last = NULL;
 618         cur = SessionHookTable;
 619         while  (cur != NULL) {
 620                 if ((fcn_ptr == cur->h_function_pointer) &&
 621                     (EventType == cur->eventtype))
 622                 {
 623                         MOD_syslog(LOG_DEBUG, "Unregistered session function (type %d)\n",
 624                                    EventType);
 625                         p = cur->next;
 626
 627                         free(cur);
 628                         cur = NULL;
 629
 630                         if (last != NULL)
 631                                 last->next = p;
 632                         else
 633                                 SessionHookTable = p;
 634                         cur = p;
 635                 }
 636                 else {
 637                         last = cur;
 638                         cur = cur->next;
 639                 }
 640         }
 641 }
 642
 643 void CtdlDestroySessionHooks(void)
 644 {
 645         SessionFunctionHook *cur, *p;
 646
 647         cur = SessionHookTable;
 648         while (cur != NULL)
 649         {
 650                 MODM_syslog(LOG_DEBUG, "Destroyed session function\n");
 651                 p = cur->next;
 652                 free(cur);
 653                 cur = p;
 654         }
 655         SessionHookTable = NULL;
 656 }
 657
 658
 659 void CtdlRegisterUserHook(void (*fcn_ptr) (ctdluser *), int EventType)
 660 {
 661
 662         UserFunctionHook *newfcn;
 663
 664         newfcn = (UserFunctionHook *)
 665             malloc(sizeof(UserFunctionHook));
 666         newfcn->next = UserHookTable;
 667         newfcn->h_function_pointer = fcn_ptr;
 668         newfcn->eventtype = EventType;
 669         UserHookTable = newfcn;
 670
 671         MOD_syslog(LOG_DEBUG, "Registered a new user function (type %d)\n",
 672                    EventType);
 673 }
 674
 675
 676 void CtdlUnregisterUserHook(void (*fcn_ptr) (struct ctdluser *), int EventType)
 677 {
 678         UserFunctionHook *cur, *p, *last;
 679         last = NULL;
 680         cur = UserHookTable;
 681         while (cur != NULL) {
 682                 if ((fcn_ptr == cur->h_function_pointer) &&
 683                     (EventType == cur->eventtype))
 684                 {
 685                         MOD_syslog(LOG_DEBUG, "Unregistered user function (type %d)\n",
 686                                    EventType);
 687                         p = cur->next;
 688
 689                         free(cur);
 690                         cur = NULL;
 691
 692                         if (last != NULL)
 693                                 last->next = p;
 694                         else
 695                                 UserHookTable = p;
 696                         cur = p;
 697                 }
 698                 else {
 699                         last = cur;
 700                         cur = cur->next;
 701                 }
 702         }
 703 }
 704
 705 void CtdlDestroyUserHooks(void)
 706 {
 707         UserFunctionHook *cur, *p;
 708
 709         cur = UserHookTable;
 710         while (cur != NULL)
 711         {
 712                 MODM_syslog(LOG_DEBUG, "Destroyed user function \n");
 713                 p = cur->next;
 714                 free(cur);
 715                 cur = p;
 716         }
 717         UserHookTable = NULL;
 718 }
 719
 720
 721 void CtdlRegisterMessageHook(int (*handler)(struct CtdlMessage *),
 722                                 int EventType)
 723 {
 724
 725         MessageFunctionHook *newfcn;
 726
 727         newfcn = (MessageFunctionHook *)
 728             malloc(sizeof(MessageFunctionHook));
 729         newfcn->next = MessageHookTable;
 730         newfcn->h_function_pointer = handler;
 731         newfcn->eventtype = EventType;
 732         MessageHookTable = newfcn;
 733
 734         MOD_syslog(LOG_DEBUG, "Registered a new message function (type %d)\n",
 735                    EventType);
 736 }
 737
 738
 739 void CtdlUnregisterMessageHook(int (*handler)(struct CtdlMessage *),
 740                 int EventType)
 741 {
 742         MessageFunctionHook *cur, *p, *last;
 743         last = NULL;
 744         cur = MessageHookTable;
 745         while (cur != NULL) {
 746                 if ((handler == cur->h_function_pointer) &&
 747                     (EventType == cur->eventtype))
 748                 {
 749                         MOD_syslog(LOG_DEBUG, "Unregistered message function (type %d)\n",
 750                                    EventType);
 751                         p = cur->next;
 752                         free(cur);
 753                         cur = NULL;
 754
 755                         if (last != NULL)
 756                                 last->next = p;
 757                         else
 758                                 MessageHookTable = p;
 759                         cur = p;
 760                 }
 761                 else {
 762                         last = cur;
 763                         cur = cur->next;
 764                 }
 765         }
 766 }
 767
 768 void CtdlDestroyMessageHook(void)
 769 {
 770         MessageFunctionHook *cur, *p;
 771
 772         cur = MessageHookTable;
 773         while (cur != NULL)
 774         {
 775                 MOD_syslog(LOG_DEBUG, "Destroyed message function (type %d)\n", cur->eventtype);
 776                 p = cur->next;
 777                 free(cur);
 778                 cur = p;
 779         }
 780         MessageHookTable = NULL;
 781 }
 782
 783
 784 void CtdlRegisterRoomHook(int (*fcn_ptr)(struct ctdlroom *))
 785 {
 786         RoomFunctionHook *newfcn;
 787
 788         newfcn = (RoomFunctionHook *)
 789             malloc(sizeof(RoomFunctionHook));
 790         newfcn->next = RoomHookTable;
 791         newfcn->fcn_ptr = fcn_ptr;
 792         RoomHookTable = newfcn;
 793
 794         MODM_syslog(LOG_DEBUG, "Registered a new room function\n");
 795 }
 796
 797
 798 void CtdlUnregisterRoomHook(int (*fcn_ptr)(struct ctdlroom *))
 799 {
 800         RoomFunctionHook *cur, *p, *last;
 801         last = NULL;
 802         cur = RoomHookTable;
 803         while (cur != NULL)
 804         {
 805                 if (fcn_ptr == cur->fcn_ptr) {
 806                         MODM_syslog(LOG_DEBUG, "Unregistered room function\n");
 807                         p = cur->next;
 808
 809                         free(cur);
 810                         cur = NULL;
 811
 812                         if (last != NULL)
 813                                 last->next = p;
 814                         else
 815                                 RoomHookTable = p;
 816                         cur = p;
 817                 }
 818                 else {
 819                         last = cur;
 820                         cur = cur->next;
 821                 }
 822         }
 823 }
 824
 825
 826 void CtdlDestroyRoomHooks(void)
 827 {
 828         RoomFunctionHook *cur, *p;
 829
 830         cur = RoomHookTable;
 831         while (cur != NULL)
 832         {
 833                 MODM_syslog(LOG_DEBUG, "Destroyed room function\n");
 834                 p = cur->next;
 835                 free(cur);
 836                 cur = p;
 837         }
 838         RoomHookTable = NULL;
 839 }
 840
 841 void CtdlRegisterNetprocHook(int (*handler)(struct CtdlMessage *, char *) )
 842 {
 843         NetprocFunctionHook *newfcn;
 844
 845         newfcn = (NetprocFunctionHook *)
 846             malloc(sizeof(NetprocFunctionHook));
 847         newfcn->next = NetprocHookTable;
 848         newfcn->h_function_pointer = handler;
 849         NetprocHookTable = newfcn;
 850
 851         MODM_syslog(LOG_DEBUG, "Registered a new netproc function\n");
 852 }
 853
 854
 855 void CtdlUnregisterNetprocHook(int (*handler)(struct CtdlMessage *, char *) )
 856 {
 857         NetprocFunctionHook *cur, *p, *last;
 858
 859         cur = NetprocHookTable;
 860         last = NULL;
 861
 862         while (cur != NULL) {
 863                 if (handler == cur->h_function_pointer)
 864                 {
 865                         MODM_syslog(LOG_DEBUG, "Unregistered netproc function\n");
 866                         p = cur->next;
 867                         free(cur);
 868                         if (last != NULL) {
 869                                 last->next = p;
 870                         }
 871                         else {
 872                                 NetprocHookTable = p;
 873                         }
 874                         cur = p;
 875                 }
 876                 else {
 877                         last = cur;
 878                         cur = cur->next;
 879                 }
 880         }
 881 }
 882
 883 void CtdlDestroyNetprocHooks(void)
 884 {
 885         NetprocFunctionHook *cur, *p;
 886
 887         cur = NetprocHookTable;
 888         while (cur != NULL)
 889         {
 890                 MODM_syslog(LOG_DEBUG, "Destroyed netproc function\n");
 891                 p = cur->next;
 892                 free(cur);
 893                 cur = p;
 894         }
 895         NetprocHookTable = NULL;
 896 }
 897
 898
 899 void CtdlRegisterDeleteHook(void (*handler)(char *, long) )
 900 {
 901         DeleteFunctionHook *newfcn;
 902
 903         newfcn = (DeleteFunctionHook *)
 904             malloc(sizeof(DeleteFunctionHook));
 905         newfcn->next = DeleteHookTable;
 906         newfcn->h_function_pointer = handler;
 907         DeleteHookTable = newfcn;
 908
 909         MODM_syslog(LOG_DEBUG, "Registered a new delete function\n");
 910 }
 911
 912
 913 void CtdlUnregisterDeleteHook(void (*handler)(char *, long) )
 914 {
 915         DeleteFunctionHook *cur, *p, *last;
 916
 917         last = NULL;
 918         cur = DeleteHookTable;
 919         while (cur != NULL) {
 920                 if (handler == cur->h_function_pointer )
 921                 {
 922                         MODM_syslog(LOG_DEBUG, "Unregistered delete function\n");
 923                         p = cur->next;
 924                         free(cur);
 925
 926                         if (last != NULL)
 927                                 last->next = p;
 928                         else
 929                                 DeleteHookTable = p;
 930
 931                         cur = p;
 932                 }
 933                 else {
 934                         last = cur;
 935                         cur = cur->next;
 936                 }
 937         }
 938 }
 939 void CtdlDestroyDeleteHooks(void)
 940 {
 941         DeleteFunctionHook *cur, *p;
 942
 943         cur = DeleteHookTable;
 944         while (cur != NULL)
 945         {
 946                 MODM_syslog(LOG_DEBUG, "Destroyed delete function\n");
 947                 p = cur->next;
 948                 free(cur);
 949                 cur = p;
 950         }
 951         DeleteHookTable = NULL;
 952 }
 953
 954
 955
 956
 957 void CtdlRegisterFixedOutputHook(char *content_type, void (*handler)(char *, int) )
 958 {
 959         FixedOutputHook *newfcn;
 960
 961         newfcn = (FixedOutputHook *)
 962             malloc(sizeof(FixedOutputHook));
 963         newfcn->next = FixedOutputTable;
 964         newfcn->h_function_pointer = handler;
 965         safestrncpy(newfcn->content_type, content_type, sizeof newfcn->content_type);
 966         FixedOutputTable = newfcn;
 967
 968         MOD_syslog(LOG_DEBUG, "Registered a new fixed output function for %s\n", newfcn->content_type);
 969 }
 970
 971
 972 void CtdlUnregisterFixedOutputHook(char *content_type)
 973 {
 974         FixedOutputHook *cur, *p, *last;
 975
 976         last = NULL;
 977         cur = FixedOutputTable;
 978         while (cur != NULL) {
 979                 /* This will also remove duplicates if any */
 980                 if (!strcasecmp(content_type, cur->content_type)) {
 981                         MOD_syslog(LOG_DEBUG,
 982                                    "Unregistered fixed output function for %s\n",
 983                                    content_type);
 984
 985                         p = cur->next;
 986                         free(cur);
 987
 988                         if (last != NULL)
 989                                 last->next = p;
 990                         else
 991                                 FixedOutputTable = p;
 992
 993                         cur = p;
 994                 }
 995                 else
 996                 {
 997                         last = cur;
 998                         cur = cur->next;
 999                 }
1000         }
1001 }
1002
1003 void CtdlDestroyFixedOutputHooks(void)
1004 {
1005         FixedOutputHook *cur, *p;
1006
1007         cur = FixedOutputTable;
1008         while (cur != NULL)
1009         {
1010                 MOD_syslog(LOG_DEBUG, "Destroyed fixed output function for %s\n", cur->content_type);
1011                 p = cur->next;
1012                 free(cur);
1013                 cur = p;
1014
1015         }
1016         FixedOutputTable = NULL;
1017 }
1018
1019 /* returns nonzero if we found a hook and used it */
1020 int PerformFixedOutputHooks(char *content_type, char *content, int content_length)
1021 {
1022         FixedOutputHook *fcn;
1023
1024         for (fcn = FixedOutputTable; fcn != NULL; fcn = fcn->next) {
1025                 if (!strcasecmp(content_type, fcn->content_type)) {
1026                         (*fcn->h_function_pointer) (content, content_length);
1027                         return(1);
1028                 }
1029         }
1030         return(0);
1031 }
1032
1033
1034
1035
1036
1037 void CtdlRegisterXmsgHook(int (*fcn_ptr) (char *, char *, char *, char *), int order)
1038 {
1039
1040         XmsgFunctionHook *newfcn;
1041
1042         newfcn = (XmsgFunctionHook *) malloc(sizeof(XmsgFunctionHook));
1043         newfcn->next = XmsgHookTable;
1044         newfcn->order = order;
1045         newfcn->h_function_pointer = fcn_ptr;
1046         XmsgHookTable = newfcn;
1047         MOD_syslog(LOG_DEBUG, "Registered a new x-msg function (priority %d)\n", order);
1048 }
1049
1050
1051 void CtdlUnregisterXmsgHook(int (*fcn_ptr) (char *, char *, char *, char *), int order)
1052 {
1053         XmsgFunctionHook *cur, *p, *last;
1054
1055         last = NULL;
1056         cur = XmsgHookTable;
1057         while (cur != NULL) {
1058                 /* This will also remove duplicates if any */
1059                 if (fcn_ptr == cur->h_function_pointer &&
1060                     order == cur->order) {
1061                         MOD_syslog(LOG_DEBUG, "Unregistered x-msg function "
1062                                    "(priority %d)\n", order);
1063                         p = cur->next;
1064                         free(cur);
1065
1066                         if (last != NULL)
1067                                 last->next = p;
1068                         else
1069                                 XmsgHookTable = p;
1070
1071                         cur = p;
1072                 }
1073                 else {
1074                         last = cur;
1075                         cur = cur->next;
1076                 }
1077         }
1078 }
1079
1080 void CtdlDestroyXmsgHooks(void)
1081 {
1082         XmsgFunctionHook *cur, *p;
1083
1084         cur = XmsgHookTable;
1085         while (cur != NULL)
1086         {
1087                 MOD_syslog(LOG_DEBUG, "Destroyed x-msg function "
1088                         "(priority %d)\n", cur->order);
1089                 p = cur->next;
1090
1091                 free(cur);
1092                 cur = p;
1093         }
1094         XmsgHookTable = NULL;
1095 }
1096
1097
1098 void CtdlRegisterServiceHook(int tcp_port,
1099                              char *sockpath,
1100                              void (*h_greeting_function) (void),
1101                              void (*h_command_function) (void),
1102                              void (*h_async_function) (void),
1103                              const char *ServiceName)
1104 {
1105         ServiceFunctionHook *newfcn;
1106         char *message;
1107         char error[SIZ];
1108
1109         strcpy(error, "");
1110         newfcn = (ServiceFunctionHook *) malloc(sizeof(ServiceFunctionHook));
1111         message = (char*) malloc (SIZ + SIZ);
1112
1113         newfcn->next = ServiceHookTable;
1114         newfcn->tcp_port = tcp_port;
1115         newfcn->sockpath = sockpath;
1116         newfcn->h_greeting_function = h_greeting_function;
1117         newfcn->h_command_function = h_command_function;
1118         newfcn->h_async_function = h_async_function;
1119         newfcn->ServiceName = ServiceName;
1120
1121         if (sockpath != NULL) {
1122                 newfcn->msock = ctdl_uds_server(sockpath, config.c_maxsessions, error);
1123                 snprintf(message, SIZ, "Unix domain socket '%s': ", sockpath);
1124         }
1125         else if (tcp_port <= 0) {       /* port -1 to disable */
1126                 MOD_syslog(LOG_INFO, "Service %s has been manually disabled, skipping\n", ServiceName);
1127                 free (message);
1128                 free(newfcn);
1129                 return;
1130         }
1131         else {
1132                 newfcn->msock = ctdl_tcp_server(config.c_ip_addr,
1133                                               tcp_port,
1134                                               config.c_maxsessions,
1135                                               error);
1136                 snprintf(message, SIZ, "TCP port %s:%d: (%s) ",
1137                          config.c_ip_addr, tcp_port, ServiceName);
1138         }
1139
1140         if (newfcn->msock > 0) {
1141                 ServiceHookTable = newfcn;
1142                 strcat(message, "registered.");
1143                 MOD_syslog(LOG_INFO, "%s\n", message);
1144         }
1145         else {
1146                 AddPortError(message, error);
1147                 strcat(message, "FAILED.");
1148                 MOD_syslog(LOG_CRIT, "%s\n", message);
1149                 free(newfcn);
1150         }
1151         free(message);
1152 }
1153
1154
1155 void CtdlUnregisterServiceHook(int tcp_port, char *sockpath,
1156                         void (*h_greeting_function) (void),
1157                         void (*h_command_function) (void),
1158                         void (*h_async_function) (void)
1159                         )
1160 {
1161         ServiceFunctionHook *cur, *p, *last;
1162
1163         last = NULL;
1164         cur = ServiceHookTable;
1165         while (cur != NULL) {
1166                 /* This will also remove duplicates if any */
1167                 if (h_greeting_function == cur->h_greeting_function &&
1168                     h_command_function == cur->h_command_function &&
1169                     h_async_function == cur->h_async_function &&
1170                     tcp_port == cur->tcp_port &&
1171                     !(sockpath && cur->sockpath && strcmp(sockpath, cur->sockpath)) )
1172                 {
1173                         if (cur->msock > 0)
1174                                 close(cur->msock);
1175                         if (sockpath) {
1176                                 MOD_syslog(LOG_INFO, "Closed UNIX domain socket %s\n",
1177                                            sockpath);
1178                                 unlink(sockpath);
1179                         } else if (tcp_port) {
1180                                 MOD_syslog(LOG_INFO, "Closed TCP port %d\n", tcp_port);
1181                         } else {
1182                                 MOD_syslog(LOG_INFO, "Unregistered service \"%s\"\n", cur->ServiceName);
1183                         }
1184                         p = cur->next;
1185                         free(cur);
1186                         if (last != NULL)
1187                                 last->next = p;
1188                         else
1189                                 ServiceHookTable = p;
1190                         cur = p;
1191                 }
1192                 else {
1193                         last = cur;
1194                         cur = cur->next;
1195                 }
1196         }
1197 }
1198
1199
1200 void CtdlShutdownServiceHooks(void)
1201 {
1202         /* sort of a duplicate of close_masters() but called earlier */
1203         ServiceFunctionHook *cur;
1204
1205         cur = ServiceHookTable;
1206         while (cur != NULL)
1207         {
1208                 if (cur->msock != -1)
1209                 {
1210                         close(cur->msock);
1211                         cur->msock = -1;
1212                         if (cur->sockpath != NULL){
1213                                 MOD_syslog(LOG_INFO, "[%s] Closed UNIX domain socket %s\n",
1214                                            cur->ServiceName,
1215                                            cur->sockpath);
1216                                 unlink(cur->sockpath);
1217                         } else {
1218                                 MOD_syslog(LOG_INFO, "[%s] closing service\n",
1219                                            cur->ServiceName);
1220                         }
1221                 }
1222                 cur = cur->next;
1223         }
1224 }
1225
1226 void CtdlDestroyServiceHook(void)
1227 {
1228         ServiceFunctionHook *cur, *p;
1229
1230         cur = ServiceHookTable;
1231         while (cur != NULL)
1232         {
1233                 close(cur->msock);
1234                 if (cur->sockpath) {
1235                         MOD_syslog(LOG_INFO, "Closed UNIX domain socket %s\n",
1236                                    cur->sockpath);
1237                         unlink(cur->sockpath);
1238                 } else if (cur->tcp_port) {
1239                         MOD_syslog(LOG_INFO, "Closed TCP port %d\n", cur->tcp_port);
1240                 } else {
1241                         MOD_syslog(LOG_INFO, "Destroyed service \"%s\"\n", cur->ServiceName);
1242                 }
1243                 p = cur->next;
1244                 free(cur);
1245                 cur = p;
1246         }
1247         ServiceHookTable = NULL;
1248 }
1249
1250 void CtdlRegisterSearchFuncHook(void (*fcn_ptr)(int *, long **, const char *), char *name)
1251 {
1252         SearchFunctionHook *newfcn;
1253
1254         if (!name || !fcn_ptr) {
1255                 return;
1256         }
1257
1258         newfcn = (SearchFunctionHook *)
1259             malloc(sizeof(SearchFunctionHook));
1260         newfcn->next = SearchFunctionHookTable;
1261         newfcn->name = name;
1262         newfcn->fcn_ptr = fcn_ptr;
1263         SearchFunctionHookTable = newfcn;
1264
1265         MOD_syslog(LOG_DEBUG, "Registered a new search function (%s)\n", name);
1266 }
1267
1268 void CtdlUnregisterSearchFuncHook(void (*fcn_ptr)(int *, long **, const char *), char *name)
1269 {
1270         SearchFunctionHook *cur, *p, *last;
1271
1272         last = NULL;
1273         cur = SearchFunctionHookTable;
1274         while (cur != NULL) {
1275                 if (fcn_ptr &&
1276                     (cur->fcn_ptr == fcn_ptr) &&
1277                     name && !strcmp(name, cur->name))
1278                 {
1279                         MOD_syslog(LOG_DEBUG, "Unregistered search function(%s)\n", name);
1280                         p = cur->next;
1281                         free (cur);
1282                         if (last != NULL)
1283                                 last->next = p;
1284                         else
1285                                 SearchFunctionHookTable = p;
1286                         cur = p;
1287                 }
1288                 else {
1289                         last = cur;
1290                         cur = cur->next;
1291                 }
1292         }
1293 }
1294
1295 void CtdlDestroySearchHooks(void)
1296 {
1297         SearchFunctionHook *cur, *p;
1298
1299         cur = SearchFunctionHookTable;
1300         SearchFunctionHookTable = NULL;
1301         while (cur != NULL) {
1302                 p = cur->next;
1303                 free(cur);
1304                 cur = p;
1305         }
1306 }
1307
1308 void CtdlModuleDoSearch(int *num_msgs, long **search_msgs, const char *search_string, const char *func_name)
1309 {
1310         SearchFunctionHook *fcn = NULL;
1311
1312         for (fcn = SearchFunctionHookTable; fcn != NULL; fcn = fcn->next) {
1313                 if (!func_name || !strcmp(func_name, fcn->name)) {
1314                         (*fcn->fcn_ptr) (num_msgs, search_msgs, search_string);
1315                         return;
1316                 }
1317         }
1318         *num_msgs = 0;
1319 }
1320
1321
1322 void PerformSessionHooks(int EventType)
1323 {
1324         SessionFunctionHook *fcn = NULL;
1325
1326         for (fcn = SessionHookTable; fcn != NULL; fcn = fcn->next) {
1327                 if (fcn->eventtype == EventType) {
1328                         if (EventType == EVT_TIMER) {
1329                                 pthread_setspecific(MyConKey, NULL);    /* for every hook */
1330                         }
1331                         (*fcn->h_function_pointer) ();
1332                 }
1333         }
1334 }
1335
1336 void PerformUserHooks(ctdluser *usbuf, int EventType)
1337 {
1338         UserFunctionHook *fcn = NULL;
1339
1340         for (fcn = UserHookTable; fcn != NULL; fcn = fcn->next) {
1341                 if (fcn->eventtype == EventType) {
1342                         (*fcn->h_function_pointer) (usbuf);
1343                 }
1344         }
1345 }
1346
1347 int PerformMessageHooks(struct CtdlMessage *msg, int EventType)
1348 {
1349         MessageFunctionHook *fcn = NULL;
1350         int total_retval = 0;
1351
1352         /* Other code may elect to protect this message from server-side
1353          * handlers; if this is the case, don't do anything.
1354         MOD_syslog(LOG_DEBUG, "** Event type is %d, flags are %d\n", EventType, msg->cm_flags);
1355          */
1356         if (msg->cm_flags & CM_SKIP_HOOKS) {
1357                 MODM_syslog(LOG_DEBUG, "Skipping hooks\n");
1358                 return(0);
1359         }
1360
1361         /* Otherwise, run all the hooks appropriate to this event type.
1362          */
1363         for (fcn = MessageHookTable; fcn != NULL; fcn = fcn->next) {
1364                 if (fcn->eventtype == EventType) {
1365                         total_retval = total_retval + (*fcn->h_function_pointer) (msg);
1366                 }
1367         }
1368
1369         /* Return the sum of the return codes from the hook functions.  If
1370          * this is an EVT_BEFORESAVE event, a nonzero return code will cause
1371          * the save operation to abort.
1372          */
1373         return total_retval;
1374 }
1375
1376
1377 int PerformRoomHooks(struct ctdlroom *target_room)
1378 {
1379         RoomFunctionHook *fcn;
1380         int total_retval = 0;
1381
1382         MOD_syslog(LOG_DEBUG, "Performing room hooks for <%s>\n", target_room->QRname);
1383
1384         for (fcn = RoomHookTable; fcn != NULL; fcn = fcn->next) {
1385                 total_retval = total_retval + (*fcn->fcn_ptr) (target_room);
1386         }
1387
1388         /* Return the sum of the return codes from the hook functions.
1389          */
1390         return total_retval;
1391 }
1392
1393
1394 int PerformNetprocHooks(struct CtdlMessage *msg, char *target_room)
1395 {
1396         NetprocFunctionHook *fcn;
1397         int total_retval = 0;
1398
1399         for (fcn = NetprocHookTable; fcn != NULL; fcn = fcn->next) {
1400                 total_retval = total_retval +
1401                         (*fcn->h_function_pointer) (msg, target_room);
1402         }
1403
1404         /* Return the sum of the return codes from the hook functions.
1405          * A nonzero return code will cause the message to *not* be imported.
1406          */
1407         return total_retval;
1408 }
1409
1410
1411 void PerformDeleteHooks(char *room, long msgnum)
1412 {
1413         DeleteFunctionHook *fcn;
1414
1415         for (fcn = DeleteHookTable; fcn != NULL; fcn = fcn->next) {
1416                 (*fcn->h_function_pointer) (room, msgnum);
1417         }
1418 }
1419
1420
1421
1422
1423
1424 int PerformXmsgHooks(char *sender, char *sender_email, char *recp, char *msg)
1425 {
1426         XmsgFunctionHook *fcn;
1427         int total_sent = 0;
1428         int p;
1429
1430         for (p=0; p<MAX_XMSG_PRI; ++p) {
1431                 for (fcn = XmsgHookTable; fcn != NULL; fcn = fcn->next) {
1432                         if (fcn->order == p) {
1433                                 total_sent +=
1434                                         (*fcn->h_function_pointer)
1435                                                 (sender, sender_email, recp, msg);
1436                         }
1437                 }
1438                 /* Break out of the loop if a higher-priority function
1439                  * successfully delivered the message.  This prevents duplicate
1440                  * deliveries to local users simultaneously signed onto
1441                  * remote services.
1442                  */
1443                 if (total_sent) break;
1444         }
1445         return total_sent;
1446 }
1447
1448
1449 /*
1450  * Dirty hack until we impliment a hook mechanism for this
1451  */
1452 void CtdlModuleStartCryptoMsgs(char *ok_response, char *nosup_response, char *error_response)
1453 {
1454 #ifdef HAVE_OPENSSL
1455         CtdlStartTLS (ok_response, nosup_response, error_response);
1456 #endif
1457 }
1458
1459 void DebugModulesEnable(const int n)
1460 {
1461         DebugModules = n;
1462 }
1463 CTDL_MODULE_INIT(modules)
1464 {
1465         if (!threading) {
1466                 CtdlRegisterDebugFlagHook(HKEY("modules"), DebugModulesEnable, &DebugModules);
1467
1468                 CtdlRegisterProtoHook(cmd_log_get, "LOGP", "Print Log-parameters");
1469                 CtdlRegisterProtoHook(cmd_log_set, "LOGS", "Set Log-parameters");
1470         }
1471         return "modules";
1472 }