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                 cur->h_function_pointer();
 583                 free(cur);
 584                 cur = p;
 585         }
 586         EVCleanupHookTable = NULL;
 587 }
 588
 589
 590 void CtdlRegisterSessionHook(void (*fcn_ptr) (void), int EventType, int Priority)
 591 {
 592         SessionFunctionHook *newfcn;
 593
 594         newfcn = (SessionFunctionHook *)
 595             malloc(sizeof(SessionFunctionHook));
 596         newfcn->Priority = Priority;
 597         newfcn->h_function_pointer = fcn_ptr;
 598         newfcn->eventtype = EventType;
 599
 600         SessionFunctionHook **pfcn;
 601         pfcn = &SessionHookTable;
 602         while ((*pfcn != NULL) &&
 603                ((*pfcn)->Priority < newfcn->Priority) &&
 604                ((*pfcn)->next != NULL))
 605                 pfcn = &(*pfcn)->next;
 606
 607         newfcn->next = *pfcn;
 608         *pfcn = newfcn;
 609
 610         MOD_syslog(LOG_DEBUG, "Registered a new session function (type %d Priority %d)\n",
 611                    EventType, Priority);
 612 }
 613
 614
 615 void CtdlUnregisterSessionHook(void (*fcn_ptr) (void), int EventType)
 616 {
 617         SessionFunctionHook *cur, *p, *last;
 618         last = NULL;
 619         cur = SessionHookTable;
 620         while  (cur != NULL) {
 621                 if ((fcn_ptr == cur->h_function_pointer) &&
 622                     (EventType == cur->eventtype))
 623                 {
 624                         MOD_syslog(LOG_DEBUG, "Unregistered session function (type %d)\n",
 625                                    EventType);
 626                         p = cur->next;
 627
 628                         free(cur);
 629                         cur = NULL;
 630
 631                         if (last != NULL)
 632                                 last->next = p;
 633                         else
 634                                 SessionHookTable = p;
 635                         cur = p;
 636                 }
 637                 else {
 638                         last = cur;
 639                         cur = cur->next;
 640                 }
 641         }
 642 }
 643
 644 void CtdlDestroySessionHooks(void)
 645 {
 646         SessionFunctionHook *cur, *p;
 647
 648         cur = SessionHookTable;
 649         while (cur != NULL)
 650         {
 651                 MODM_syslog(LOG_DEBUG, "Destroyed session function\n");
 652                 p = cur->next;
 653                 free(cur);
 654                 cur = p;
 655         }
 656         SessionHookTable = NULL;
 657 }
 658
 659
 660 void CtdlRegisterUserHook(void (*fcn_ptr) (ctdluser *), int EventType)
 661 {
 662
 663         UserFunctionHook *newfcn;
 664
 665         newfcn = (UserFunctionHook *)
 666             malloc(sizeof(UserFunctionHook));
 667         newfcn->next = UserHookTable;
 668         newfcn->h_function_pointer = fcn_ptr;
 669         newfcn->eventtype = EventType;
 670         UserHookTable = newfcn;
 671
 672         MOD_syslog(LOG_DEBUG, "Registered a new user function (type %d)\n",
 673                    EventType);
 674 }
 675
 676
 677 void CtdlUnregisterUserHook(void (*fcn_ptr) (struct ctdluser *), int EventType)
 678 {
 679         UserFunctionHook *cur, *p, *last;
 680         last = NULL;
 681         cur = UserHookTable;
 682         while (cur != NULL) {
 683                 if ((fcn_ptr == cur->h_function_pointer) &&
 684                     (EventType == cur->eventtype))
 685                 {
 686                         MOD_syslog(LOG_DEBUG, "Unregistered user function (type %d)\n",
 687                                    EventType);
 688                         p = cur->next;
 689
 690                         free(cur);
 691                         cur = NULL;
 692
 693                         if (last != NULL)
 694                                 last->next = p;
 695                         else
 696                                 UserHookTable = p;
 697                         cur = p;
 698                 }
 699                 else {
 700                         last = cur;
 701                         cur = cur->next;
 702                 }
 703         }
 704 }
 705
 706 void CtdlDestroyUserHooks(void)
 707 {
 708         UserFunctionHook *cur, *p;
 709
 710         cur = UserHookTable;
 711         while (cur != NULL)
 712         {
 713                 MODM_syslog(LOG_DEBUG, "Destroyed user function \n");
 714                 p = cur->next;
 715                 free(cur);
 716                 cur = p;
 717         }
 718         UserHookTable = NULL;
 719 }
 720
 721
 722 void CtdlRegisterMessageHook(int (*handler)(struct CtdlMessage *),
 723                                 int EventType)
 724 {
 725
 726         MessageFunctionHook *newfcn;
 727
 728         newfcn = (MessageFunctionHook *)
 729             malloc(sizeof(MessageFunctionHook));
 730         newfcn->next = MessageHookTable;
 731         newfcn->h_function_pointer = handler;
 732         newfcn->eventtype = EventType;
 733         MessageHookTable = newfcn;
 734
 735         MOD_syslog(LOG_DEBUG, "Registered a new message function (type %d)\n",
 736                    EventType);
 737 }
 738
 739
 740 void CtdlUnregisterMessageHook(int (*handler)(struct CtdlMessage *),
 741                 int EventType)
 742 {
 743         MessageFunctionHook *cur, *p, *last;
 744         last = NULL;
 745         cur = MessageHookTable;
 746         while (cur != NULL) {
 747                 if ((handler == cur->h_function_pointer) &&
 748                     (EventType == cur->eventtype))
 749                 {
 750                         MOD_syslog(LOG_DEBUG, "Unregistered message function (type %d)\n",
 751                                    EventType);
 752                         p = cur->next;
 753                         free(cur);
 754                         cur = NULL;
 755
 756                         if (last != NULL)
 757                                 last->next = p;
 758                         else
 759                                 MessageHookTable = p;
 760                         cur = p;
 761                 }
 762                 else {
 763                         last = cur;
 764                         cur = cur->next;
 765                 }
 766         }
 767 }
 768
 769 void CtdlDestroyMessageHook(void)
 770 {
 771         MessageFunctionHook *cur, *p;
 772
 773         cur = MessageHookTable;
 774         while (cur != NULL)
 775         {
 776                 MOD_syslog(LOG_DEBUG, "Destroyed message function (type %d)\n", cur->eventtype);
 777                 p = cur->next;
 778                 free(cur);
 779                 cur = p;
 780         }
 781         MessageHookTable = NULL;
 782 }
 783
 784
 785 void CtdlRegisterRoomHook(int (*fcn_ptr)(struct ctdlroom *))
 786 {
 787         RoomFunctionHook *newfcn;
 788
 789         newfcn = (RoomFunctionHook *)
 790             malloc(sizeof(RoomFunctionHook));
 791         newfcn->next = RoomHookTable;
 792         newfcn->fcn_ptr = fcn_ptr;
 793         RoomHookTable = newfcn;
 794
 795         MODM_syslog(LOG_DEBUG, "Registered a new room function\n");
 796 }
 797
 798
 799 void CtdlUnregisterRoomHook(int (*fcn_ptr)(struct ctdlroom *))
 800 {
 801         RoomFunctionHook *cur, *p, *last;
 802         last = NULL;
 803         cur = RoomHookTable;
 804         while (cur != NULL)
 805         {
 806                 if (fcn_ptr == cur->fcn_ptr) {
 807                         MODM_syslog(LOG_DEBUG, "Unregistered room function\n");
 808                         p = cur->next;
 809
 810                         free(cur);
 811                         cur = NULL;
 812
 813                         if (last != NULL)
 814                                 last->next = p;
 815                         else
 816                                 RoomHookTable = p;
 817                         cur = p;
 818                 }
 819                 else {
 820                         last = cur;
 821                         cur = cur->next;
 822                 }
 823         }
 824 }
 825
 826
 827 void CtdlDestroyRoomHooks(void)
 828 {
 829         RoomFunctionHook *cur, *p;
 830
 831         cur = RoomHookTable;
 832         while (cur != NULL)
 833         {
 834                 MODM_syslog(LOG_DEBUG, "Destroyed room function\n");
 835                 p = cur->next;
 836                 free(cur);
 837                 cur = p;
 838         }
 839         RoomHookTable = NULL;
 840 }
 841
 842 void CtdlRegisterNetprocHook(int (*handler)(struct CtdlMessage *, char *) )
 843 {
 844         NetprocFunctionHook *newfcn;
 845
 846         newfcn = (NetprocFunctionHook *)
 847             malloc(sizeof(NetprocFunctionHook));
 848         newfcn->next = NetprocHookTable;
 849         newfcn->h_function_pointer = handler;
 850         NetprocHookTable = newfcn;
 851
 852         MODM_syslog(LOG_DEBUG, "Registered a new netproc function\n");
 853 }
 854
 855
 856 void CtdlUnregisterNetprocHook(int (*handler)(struct CtdlMessage *, char *) )
 857 {
 858         NetprocFunctionHook *cur, *p, *last;
 859
 860         cur = NetprocHookTable;
 861         last = NULL;
 862
 863         while (cur != NULL) {
 864                 if (handler == cur->h_function_pointer)
 865                 {
 866                         MODM_syslog(LOG_DEBUG, "Unregistered netproc function\n");
 867                         p = cur->next;
 868                         free(cur);
 869                         if (last != NULL) {
 870                                 last->next = p;
 871                         }
 872                         else {
 873                                 NetprocHookTable = p;
 874                         }
 875                         cur = p;
 876                 }
 877                 else {
 878                         last = cur;
 879                         cur = cur->next;
 880                 }
 881         }
 882 }
 883
 884 void CtdlDestroyNetprocHooks(void)
 885 {
 886         NetprocFunctionHook *cur, *p;
 887
 888         cur = NetprocHookTable;
 889         while (cur != NULL)
 890         {
 891                 MODM_syslog(LOG_DEBUG, "Destroyed netproc function\n");
 892                 p = cur->next;
 893                 free(cur);
 894                 cur = p;
 895         }
 896         NetprocHookTable = NULL;
 897 }
 898
 899
 900 void CtdlRegisterDeleteHook(void (*handler)(char *, long) )
 901 {
 902         DeleteFunctionHook *newfcn;
 903
 904         newfcn = (DeleteFunctionHook *)
 905             malloc(sizeof(DeleteFunctionHook));
 906         newfcn->next = DeleteHookTable;
 907         newfcn->h_function_pointer = handler;
 908         DeleteHookTable = newfcn;
 909
 910         MODM_syslog(LOG_DEBUG, "Registered a new delete function\n");
 911 }
 912
 913
 914 void CtdlUnregisterDeleteHook(void (*handler)(char *, long) )
 915 {
 916         DeleteFunctionHook *cur, *p, *last;
 917
 918         last = NULL;
 919         cur = DeleteHookTable;
 920         while (cur != NULL) {
 921                 if (handler == cur->h_function_pointer )
 922                 {
 923                         MODM_syslog(LOG_DEBUG, "Unregistered delete function\n");
 924                         p = cur->next;
 925                         free(cur);
 926
 927                         if (last != NULL)
 928                                 last->next = p;
 929                         else
 930                                 DeleteHookTable = p;
 931
 932                         cur = p;
 933                 }
 934                 else {
 935                         last = cur;
 936                         cur = cur->next;
 937                 }
 938         }
 939 }
 940 void CtdlDestroyDeleteHooks(void)
 941 {
 942         DeleteFunctionHook *cur, *p;
 943
 944         cur = DeleteHookTable;
 945         while (cur != NULL)
 946         {
 947                 MODM_syslog(LOG_DEBUG, "Destroyed delete function\n");
 948                 p = cur->next;
 949                 free(cur);
 950                 cur = p;
 951         }
 952         DeleteHookTable = NULL;
 953 }
 954
 955
 956
 957
 958 void CtdlRegisterFixedOutputHook(char *content_type, void (*handler)(char *, int) )
 959 {
 960         FixedOutputHook *newfcn;
 961
 962         newfcn = (FixedOutputHook *)
 963             malloc(sizeof(FixedOutputHook));
 964         newfcn->next = FixedOutputTable;
 965         newfcn->h_function_pointer = handler;
 966         safestrncpy(newfcn->content_type, content_type, sizeof newfcn->content_type);
 967         FixedOutputTable = newfcn;
 968
 969         MOD_syslog(LOG_DEBUG, "Registered a new fixed output function for %s\n", newfcn->content_type);
 970 }
 971
 972
 973 void CtdlUnregisterFixedOutputHook(char *content_type)
 974 {
 975         FixedOutputHook *cur, *p, *last;
 976
 977         last = NULL;
 978         cur = FixedOutputTable;
 979         while (cur != NULL) {
 980                 /* This will also remove duplicates if any */
 981                 if (!strcasecmp(content_type, cur->content_type)) {
 982                         MOD_syslog(LOG_DEBUG,
 983                                    "Unregistered fixed output function for %s\n",
 984                                    content_type);
 985
 986                         p = cur->next;
 987                         free(cur);
 988
 989                         if (last != NULL)
 990                                 last->next = p;
 991                         else
 992                                 FixedOutputTable = p;
 993
 994                         cur = p;
 995                 }
 996                 else
 997                 {
 998                         last = cur;
 999                         cur = cur->next;
1000                 }
1001         }
1002 }
1003
1004 void CtdlDestroyFixedOutputHooks(void)
1005 {
1006         FixedOutputHook *cur, *p;
1007
1008         cur = FixedOutputTable;
1009         while (cur != NULL)
1010         {
1011                 MOD_syslog(LOG_DEBUG, "Destroyed fixed output function for %s\n", cur->content_type);
1012                 p = cur->next;
1013                 free(cur);
1014                 cur = p;
1015
1016         }
1017         FixedOutputTable = NULL;
1018 }
1019
1020 /* returns nonzero if we found a hook and used it */
1021 int PerformFixedOutputHooks(char *content_type, char *content, int content_length)
1022 {
1023         FixedOutputHook *fcn;
1024
1025         for (fcn = FixedOutputTable; fcn != NULL; fcn = fcn->next) {
1026                 if (!strcasecmp(content_type, fcn->content_type)) {
1027                         (*fcn->h_function_pointer) (content, content_length);
1028                         return(1);
1029                 }
1030         }
1031         return(0);
1032 }
1033
1034
1035
1036
1037
1038 void CtdlRegisterXmsgHook(int (*fcn_ptr) (char *, char *, char *, char *), int order)
1039 {
1040
1041         XmsgFunctionHook *newfcn;
1042
1043         newfcn = (XmsgFunctionHook *) malloc(sizeof(XmsgFunctionHook));
1044         newfcn->next = XmsgHookTable;
1045         newfcn->order = order;
1046         newfcn->h_function_pointer = fcn_ptr;
1047         XmsgHookTable = newfcn;
1048         MOD_syslog(LOG_DEBUG, "Registered a new x-msg function (priority %d)\n", order);
1049 }
1050
1051
1052 void CtdlUnregisterXmsgHook(int (*fcn_ptr) (char *, char *, char *, char *), int order)
1053 {
1054         XmsgFunctionHook *cur, *p, *last;
1055
1056         last = NULL;
1057         cur = XmsgHookTable;
1058         while (cur != NULL) {
1059                 /* This will also remove duplicates if any */
1060                 if (fcn_ptr == cur->h_function_pointer &&
1061                     order == cur->order) {
1062                         MOD_syslog(LOG_DEBUG, "Unregistered x-msg function "
1063                                    "(priority %d)\n", order);
1064                         p = cur->next;
1065                         free(cur);
1066
1067                         if (last != NULL)
1068                                 last->next = p;
1069                         else
1070                                 XmsgHookTable = p;
1071
1072                         cur = p;
1073                 }
1074                 else {
1075                         last = cur;
1076                         cur = cur->next;
1077                 }
1078         }
1079 }
1080
1081 void CtdlDestroyXmsgHooks(void)
1082 {
1083         XmsgFunctionHook *cur, *p;
1084
1085         cur = XmsgHookTable;
1086         while (cur != NULL)
1087         {
1088                 MOD_syslog(LOG_DEBUG, "Destroyed x-msg function "
1089                         "(priority %d)\n", cur->order);
1090                 p = cur->next;
1091
1092                 free(cur);
1093                 cur = p;
1094         }
1095         XmsgHookTable = NULL;
1096 }
1097
1098
1099 void CtdlRegisterServiceHook(int tcp_port,
1100                              char *sockpath,
1101                              void (*h_greeting_function) (void),
1102                              void (*h_command_function) (void),
1103                              void (*h_async_function) (void),
1104                              const char *ServiceName)
1105 {
1106         ServiceFunctionHook *newfcn;
1107         char *message;
1108         char error[SIZ];
1109
1110         strcpy(error, "");
1111         newfcn = (ServiceFunctionHook *) malloc(sizeof(ServiceFunctionHook));
1112         message = (char*) malloc (SIZ + SIZ);
1113
1114         newfcn->next = ServiceHookTable;
1115         newfcn->tcp_port = tcp_port;
1116         newfcn->sockpath = sockpath;
1117         newfcn->h_greeting_function = h_greeting_function;
1118         newfcn->h_command_function = h_command_function;
1119         newfcn->h_async_function = h_async_function;
1120         newfcn->ServiceName = ServiceName;
1121
1122         if (sockpath != NULL) {
1123                 newfcn->msock = ctdl_uds_server(sockpath, config.c_maxsessions, error);
1124                 snprintf(message, SIZ, "Unix domain socket '%s': ", sockpath);
1125         }
1126         else if (tcp_port <= 0) {       /* port -1 to disable */
1127                 MOD_syslog(LOG_INFO, "Service %s has been manually disabled, skipping\n", ServiceName);
1128                 free (message);
1129                 free(newfcn);
1130                 return;
1131         }
1132         else {
1133                 newfcn->msock = ctdl_tcp_server(config.c_ip_addr,
1134                                               tcp_port,
1135                                               config.c_maxsessions,
1136                                               error);
1137                 snprintf(message, SIZ, "TCP port %s:%d: (%s) ",
1138                          config.c_ip_addr, tcp_port, ServiceName);
1139         }
1140
1141         if (newfcn->msock > 0) {
1142                 ServiceHookTable = newfcn;
1143                 strcat(message, "registered.");
1144                 MOD_syslog(LOG_INFO, "%s\n", message);
1145         }
1146         else {
1147                 AddPortError(message, error);
1148                 strcat(message, "FAILED.");
1149                 MOD_syslog(LOG_CRIT, "%s\n", message);
1150                 free(newfcn);
1151         }
1152         free(message);
1153 }
1154
1155
1156 void CtdlUnregisterServiceHook(int tcp_port, char *sockpath,
1157                         void (*h_greeting_function) (void),
1158                         void (*h_command_function) (void),
1159                         void (*h_async_function) (void)
1160                         )
1161 {
1162         ServiceFunctionHook *cur, *p, *last;
1163
1164         last = NULL;
1165         cur = ServiceHookTable;
1166         while (cur != NULL) {
1167                 /* This will also remove duplicates if any */
1168                 if (h_greeting_function == cur->h_greeting_function &&
1169                     h_command_function == cur->h_command_function &&
1170                     h_async_function == cur->h_async_function &&
1171                     tcp_port == cur->tcp_port &&
1172                     !(sockpath && cur->sockpath && strcmp(sockpath, cur->sockpath)) )
1173                 {
1174                         if (cur->msock > 0)
1175                                 close(cur->msock);
1176                         if (sockpath) {
1177                                 MOD_syslog(LOG_INFO, "Closed UNIX domain socket %s\n",
1178                                            sockpath);
1179                                 unlink(sockpath);
1180                         } else if (tcp_port) {
1181                                 MOD_syslog(LOG_INFO, "Closed TCP port %d\n", tcp_port);
1182                         } else {
1183                                 MOD_syslog(LOG_INFO, "Unregistered service \"%s\"\n", cur->ServiceName);
1184                         }
1185                         p = cur->next;
1186                         free(cur);
1187                         if (last != NULL)
1188                                 last->next = p;
1189                         else
1190                                 ServiceHookTable = p;
1191                         cur = p;
1192                 }
1193                 else {
1194                         last = cur;
1195                         cur = cur->next;
1196                 }
1197         }
1198 }
1199
1200
1201 void CtdlShutdownServiceHooks(void)
1202 {
1203         /* sort of a duplicate of close_masters() but called earlier */
1204         ServiceFunctionHook *cur;
1205
1206         cur = ServiceHookTable;
1207         while (cur != NULL)
1208         {
1209                 if (cur->msock != -1)
1210                 {
1211                         close(cur->msock);
1212                         cur->msock = -1;
1213                         if (cur->sockpath != NULL){
1214                                 MOD_syslog(LOG_INFO, "[%s] Closed UNIX domain socket %s\n",
1215                                            cur->ServiceName,
1216                                            cur->sockpath);
1217                                 unlink(cur->sockpath);
1218                         } else {
1219                                 MOD_syslog(LOG_INFO, "[%s] closing service\n",
1220                                            cur->ServiceName);
1221                         }
1222                 }
1223                 cur = cur->next;
1224         }
1225 }
1226
1227 void CtdlDestroyServiceHook(void)
1228 {
1229         ServiceFunctionHook *cur, *p;
1230
1231         cur = ServiceHookTable;
1232         while (cur != NULL)
1233         {
1234                 close(cur->msock);
1235                 if (cur->sockpath) {
1236                         MOD_syslog(LOG_INFO, "Closed UNIX domain socket %s\n",
1237                                    cur->sockpath);
1238                         unlink(cur->sockpath);
1239                 } else if (cur->tcp_port) {
1240                         MOD_syslog(LOG_INFO, "Closed TCP port %d\n", cur->tcp_port);
1241                 } else {
1242                         MOD_syslog(LOG_INFO, "Destroyed service \"%s\"\n", cur->ServiceName);
1243                 }
1244                 p = cur->next;
1245                 free(cur);
1246                 cur = p;
1247         }
1248         ServiceHookTable = NULL;
1249 }
1250
1251 void CtdlRegisterSearchFuncHook(void (*fcn_ptr)(int *, long **, const char *), char *name)
1252 {
1253         SearchFunctionHook *newfcn;
1254
1255         if (!name || !fcn_ptr) {
1256                 return;
1257         }
1258
1259         newfcn = (SearchFunctionHook *)
1260             malloc(sizeof(SearchFunctionHook));
1261         newfcn->next = SearchFunctionHookTable;
1262         newfcn->name = name;
1263         newfcn->fcn_ptr = fcn_ptr;
1264         SearchFunctionHookTable = newfcn;
1265
1266         MOD_syslog(LOG_DEBUG, "Registered a new search function (%s)\n", name);
1267 }
1268
1269 void CtdlUnregisterSearchFuncHook(void (*fcn_ptr)(int *, long **, const char *), char *name)
1270 {
1271         SearchFunctionHook *cur, *p, *last;
1272
1273         last = NULL;
1274         cur = SearchFunctionHookTable;
1275         while (cur != NULL) {
1276                 if (fcn_ptr &&
1277                     (cur->fcn_ptr == fcn_ptr) &&
1278                     name && !strcmp(name, cur->name))
1279                 {
1280                         MOD_syslog(LOG_DEBUG, "Unregistered search function(%s)\n", name);
1281                         p = cur->next;
1282                         free (cur);
1283                         if (last != NULL)
1284                                 last->next = p;
1285                         else
1286                                 SearchFunctionHookTable = p;
1287                         cur = p;
1288                 }
1289                 else {
1290                         last = cur;
1291                         cur = cur->next;
1292                 }
1293         }
1294 }
1295
1296 void CtdlDestroySearchHooks(void)
1297 {
1298         SearchFunctionHook *cur, *p;
1299
1300         cur = SearchFunctionHookTable;
1301         SearchFunctionHookTable = NULL;
1302         while (cur != NULL) {
1303                 p = cur->next;
1304                 free(cur);
1305                 cur = p;
1306         }
1307 }
1308
1309 void CtdlModuleDoSearch(int *num_msgs, long **search_msgs, const char *search_string, const char *func_name)
1310 {
1311         SearchFunctionHook *fcn = NULL;
1312
1313         for (fcn = SearchFunctionHookTable; fcn != NULL; fcn = fcn->next) {
1314                 if (!func_name || !strcmp(func_name, fcn->name)) {
1315                         (*fcn->fcn_ptr) (num_msgs, search_msgs, search_string);
1316                         return;
1317                 }
1318         }
1319         *num_msgs = 0;
1320 }
1321
1322
1323 void PerformSessionHooks(int EventType)
1324 {
1325         SessionFunctionHook *fcn = NULL;
1326
1327         for (fcn = SessionHookTable; fcn != NULL; fcn = fcn->next) {
1328                 if (fcn->eventtype == EventType) {
1329                         if (EventType == EVT_TIMER) {
1330                                 pthread_setspecific(MyConKey, NULL);    /* for every hook */
1331                         }
1332                         (*fcn->h_function_pointer) ();
1333                 }
1334         }
1335 }
1336
1337 void PerformUserHooks(ctdluser *usbuf, int EventType)
1338 {
1339         UserFunctionHook *fcn = NULL;
1340
1341         for (fcn = UserHookTable; fcn != NULL; fcn = fcn->next) {
1342                 if (fcn->eventtype == EventType) {
1343                         (*fcn->h_function_pointer) (usbuf);
1344                 }
1345         }
1346 }
1347
1348 int PerformMessageHooks(struct CtdlMessage *msg, int EventType)
1349 {
1350         MessageFunctionHook *fcn = NULL;
1351         int total_retval = 0;
1352
1353         /* Other code may elect to protect this message from server-side
1354          * handlers; if this is the case, don't do anything.
1355         MOD_syslog(LOG_DEBUG, "** Event type is %d, flags are %d\n", EventType, msg->cm_flags);
1356          */
1357         if (msg->cm_flags & CM_SKIP_HOOKS) {
1358                 MODM_syslog(LOG_DEBUG, "Skipping hooks\n");
1359                 return(0);
1360         }
1361
1362         /* Otherwise, run all the hooks appropriate to this event type.
1363          */
1364         for (fcn = MessageHookTable; fcn != NULL; fcn = fcn->next) {
1365                 if (fcn->eventtype == EventType) {
1366                         total_retval = total_retval + (*fcn->h_function_pointer) (msg);
1367                 }
1368         }
1369
1370         /* Return the sum of the return codes from the hook functions.  If
1371          * this is an EVT_BEFORESAVE event, a nonzero return code will cause
1372          * the save operation to abort.
1373          */
1374         return total_retval;
1375 }
1376
1377
1378 int PerformRoomHooks(struct ctdlroom *target_room)
1379 {
1380         RoomFunctionHook *fcn;
1381         int total_retval = 0;
1382
1383         MOD_syslog(LOG_DEBUG, "Performing room hooks for <%s>\n", target_room->QRname);
1384
1385         for (fcn = RoomHookTable; fcn != NULL; fcn = fcn->next) {
1386                 total_retval = total_retval + (*fcn->fcn_ptr) (target_room);
1387         }
1388
1389         /* Return the sum of the return codes from the hook functions.
1390          */
1391         return total_retval;
1392 }
1393
1394
1395 int PerformNetprocHooks(struct CtdlMessage *msg, char *target_room)
1396 {
1397         NetprocFunctionHook *fcn;
1398         int total_retval = 0;
1399
1400         for (fcn = NetprocHookTable; fcn != NULL; fcn = fcn->next) {
1401                 total_retval = total_retval +
1402                         (*fcn->h_function_pointer) (msg, target_room);
1403         }
1404
1405         /* Return the sum of the return codes from the hook functions.
1406          * A nonzero return code will cause the message to *not* be imported.
1407          */
1408         return total_retval;
1409 }
1410
1411
1412 void PerformDeleteHooks(char *room, long msgnum)
1413 {
1414         DeleteFunctionHook *fcn;
1415
1416         for (fcn = DeleteHookTable; fcn != NULL; fcn = fcn->next) {
1417                 (*fcn->h_function_pointer) (room, msgnum);
1418         }
1419 }
1420
1421
1422
1423
1424
1425 int PerformXmsgHooks(char *sender, char *sender_email, char *recp, char *msg)
1426 {
1427         XmsgFunctionHook *fcn;
1428         int total_sent = 0;
1429         int p;
1430
1431         for (p=0; p<MAX_XMSG_PRI; ++p) {
1432                 for (fcn = XmsgHookTable; fcn != NULL; fcn = fcn->next) {
1433                         if (fcn->order == p) {
1434                                 total_sent +=
1435                                         (*fcn->h_function_pointer)
1436                                                 (sender, sender_email, recp, msg);
1437                         }
1438                 }
1439                 /* Break out of the loop if a higher-priority function
1440                  * successfully delivered the message.  This prevents duplicate
1441                  * deliveries to local users simultaneously signed onto
1442                  * remote services.
1443                  */
1444                 if (total_sent) break;
1445         }
1446         return total_sent;
1447 }
1448
1449
1450 /*
1451  * Dirty hack until we impliment a hook mechanism for this
1452  */
1453 void CtdlModuleStartCryptoMsgs(char *ok_response, char *nosup_response, char *error_response)
1454 {
1455 #ifdef HAVE_OPENSSL
1456         CtdlStartTLS (ok_response, nosup_response, error_response);
1457 #endif
1458 }
1459
1460 void DebugModulesEnable(const int n)
1461 {
1462         DebugModules = n;
1463 }
1464 CTDL_MODULE_INIT(modules)
1465 {
1466         if (!threading) {
1467                 CtdlRegisterDebugFlagHook(HKEY("modules"), DebugModulesEnable, &DebugModules);
1468
1469                 CtdlRegisterProtoHook(cmd_log_get, "LOGP", "Print Log-parameters");
1470                 CtdlRegisterProtoHook(cmd_log_set, "LOGS", "Set Log-parameters");
1471         }
1472         return "modules";
1473 }