citadel/serv_extensions.c

   1 /*
   2  * Citadel Dynamic Loading Module
   3  * Written by Brian Costello <btx@calyx.net>
   4  *
   5  * Copyright (c) 1987-2011 by the citadel.org team
   6  *
   7  * This program is open source software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 3 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  20  */
  21
  22 #include "sysdep.h"
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <unistd.h>
  26 #include <sys/types.h>
  27 #include <dirent.h>
  28 #include <string.h>
  29 #include <limits.h>
  30 #include <ctype.h>
  31 #include <syslog.h>
  32 #include <libcitadel.h>
  33 #include "citadel.h"
  34 #include "server.h"
  35 #include "serv_extensions.h"
  36 #include "sysdep_decls.h"
  37 #include "msgbase.h"
  38 #include "config.h"
  39
  40 #include "modules/crypto/serv_crypto.h" /* Needed until a universal crypto startup hook is implimented for CtdlStartTLS */
  41
  42 #include "ctdl_module.h"
  43
  44 #ifndef HAVE_SNPRINTF
  45 #include <stdarg.h>
  46 #include "snprintf.h"
  47 #endif
  48
  49 int DebugModules = 0;
  50
  51 /*
  52  * Structure defentitions for hook tables
  53  */
  54
  55 typedef struct __LogDebugEntry {
  56         CtdlDbgFunction F;
  57         const char *Name;
  58         long Len;
  59         const int *LogP;
  60 } LogDebugEntry;
  61 HashList *LogDebugEntryTable = NULL;
  62
  63 typedef struct LogFunctionHook LogFunctionHook;
  64 struct LogFunctionHook {
  65         LogFunctionHook *next;
  66         int loglevel;
  67         void (*h_function_pointer) (char *);
  68 };
  69 extern LogFunctionHook *LogHookTable;
  70
  71 typedef struct FixedOutputHook FixedOutputHook;
  72 struct FixedOutputHook {
  73         FixedOutputHook *next;
  74         char content_type[64];
  75         void (*h_function_pointer) (char *, int);
  76 };
  77 extern FixedOutputHook *FixedOutputTable;
  78
  79
  80
  81 /*
  82  * SessionFunctionHook extensions are used for any type of hook for which
  83  * the context in which it's being called (which is determined by the event
  84  * type) will make it obvious for the hook function to know where to look for
  85  * pertinent data.
  86  */
  87 typedef struct SessionFunctionHook SessionFunctionHook;
  88 struct SessionFunctionHook {
  89         SessionFunctionHook *next;
  90         void (*h_function_pointer) (void);
  91         int eventtype;
  92 };
  93 extern SessionFunctionHook *SessionHookTable;
  94
  95
  96 /*
  97  * UserFunctionHook extensions are used for any type of hook which implements
  98  * an operation on a user or username (potentially) other than the one
  99  * operating the current session.
 100  */
 101 typedef struct UserFunctionHook UserFunctionHook;
 102 struct UserFunctionHook {
 103         UserFunctionHook *next;
 104         void (*h_function_pointer) (struct ctdluser *usbuf);
 105         int eventtype;
 106 };
 107 extern UserFunctionHook *UserHookTable;
 108
 109 /*
 110  * MessageFunctionHook extensions are used for hooks which implement handlers
 111  * for various types of message operations (save, read, etc.)
 112  */
 113 typedef struct MessageFunctionHook MessageFunctionHook;
 114 struct MessageFunctionHook {
 115         MessageFunctionHook *next;
 116         int (*h_function_pointer) (struct CtdlMessage *msg);
 117         int eventtype;
 118 };
 119 extern MessageFunctionHook *MessageHookTable;
 120
 121
 122 /*
 123  * NetprocFunctionHook extensions are used for hooks which implement handlers
 124  * for incoming network messages.
 125  */
 126 typedef struct NetprocFunctionHook NetprocFunctionHook;
 127 struct NetprocFunctionHook {
 128         NetprocFunctionHook *next;
 129         int (*h_function_pointer) (struct CtdlMessage *msg, char *target_room);
 130 };
 131 extern NetprocFunctionHook *NetprocHookTable;
 132
 133
 134 /*
 135  * DeleteFunctionHook extensions are used for hooks which get called when a
 136  * message is about to be deleted.
 137  */
 138 typedef struct DeleteFunctionHook DeleteFunctionHook;
 139 struct DeleteFunctionHook {
 140         DeleteFunctionHook *next;
 141         void (*h_function_pointer) (char *target_room, long msgnum);
 142 };
 143 extern DeleteFunctionHook *DeleteHookTable;
 144
 145
 146 /*
 147  * ExpressMessageFunctionHook extensions are used for hooks which implement
 148  * the sending of an instant message through various channels.  Any function
 149  * registered should return the number of recipients to whom the message was
 150  * successfully transmitted.
 151  */
 152 typedef struct XmsgFunctionHook XmsgFunctionHook;
 153 struct XmsgFunctionHook {
 154         XmsgFunctionHook *next;
 155         int (*h_function_pointer) (char *, char *, char *, char *);
 156         int order;
 157 };
 158 extern XmsgFunctionHook *XmsgHookTable;
 159
 160
 161
 162
 163 /*
 164  * RoomFunctionHook extensions are used for hooks which impliment room
 165  * processing functions when new messages are added EG. SIEVE.
 166  */
 167 typedef struct RoomFunctionHook RoomFunctionHook;
 168 struct RoomFunctionHook {
 169         RoomFunctionHook *next;
 170         int (*fcn_ptr) (struct ctdlroom *);
 171 };
 172 extern RoomFunctionHook *RoomHookTable;
 173
 174
 175
 176 typedef struct SearchFunctionHook SearchFunctionHook;
 177 struct SearchFunctionHook {
 178         SearchFunctionHook *next;
 179         void (*fcn_ptr) (int *, long **, const char *);
 180         char *name;
 181 };
 182 extern SearchFunctionHook *SearchFunctionHookTable;
 183
 184
 185 CleanupFunctionHook *CleanupHookTable = NULL;
 186 CleanupFunctionHook *EVCleanupHookTable = NULL;
 187 SessionFunctionHook *SessionHookTable = NULL;
 188 UserFunctionHook *UserHookTable = NULL;
 189 XmsgFunctionHook *XmsgHookTable = NULL;
 190 MessageFunctionHook *MessageHookTable = NULL;
 191 NetprocFunctionHook *NetprocHookTable = NULL;
 192 DeleteFunctionHook *DeleteHookTable = NULL;
 193 ServiceFunctionHook *ServiceHookTable = NULL;
 194 FixedOutputHook *FixedOutputTable = NULL;
 195 RoomFunctionHook *RoomHookTable = NULL;
 196 SearchFunctionHook *SearchFunctionHookTable = NULL;
 197
 198 typedef struct ProtoFunctionHook ProtoFunctionHook;
 199 struct ProtoFunctionHook {
 200         void (*handler) (char *cmdbuf);
 201         const char *cmd;
 202         const char *desc;
 203 };
 204
 205 HashList *ProtoHookList = NULL;
 206
 207
 208 #define ERR_PORT (1 << 1)
 209
 210
 211 static StrBuf *portlist = NULL;
 212
 213 static StrBuf *errormessages = NULL;
 214
 215
 216 long   DetailErrorFlags;
 217 ConstStr Empty = {HKEY("")};
 218 char *ErrSubject = "Startup Problems";
 219 ConstStr ErrGeneral[] = {
 220         {HKEY("Citadel had trouble on starting up. ")},
 221         {HKEY(" This means, citadel won't be the service provider for a specific service you configured it to.\n\n"
 222               "If you don't want citadel to provide these services, turn them off in WebCit via: ")},
 223         {HKEY("To make both ways actualy take place restart the citserver with \"sendcommand down\"\n\n"
 224               "The errors returned by the system were:\n")},
 225         {HKEY("You can recheck the above if you follow this faq item:\n"
 226               "http://www.citadel.org/doku.php?id=faq:mastering_your_os:net#netstat")}
 227 };
 228
 229 ConstStr ErrPortShort = { HKEY("We couldn't bind all ports you configured to be provided by citadel server.\n")};
 230 ConstStr ErrPortWhere = { HKEY("\"Admin->System Preferences->Network\".\n\nThe failed ports and sockets are: ")};
 231 ConstStr ErrPortHint  = { HKEY("If you want citadel to provide you with that functionality, "
 232                                "check the output of \"netstat -lnp\" on linux Servers or \"netstat -na\" on *BSD"
 233                                " and stop the program that binds these ports.\n You should eventually remove "
 234                                " their initscripts in /etc/init.d so that you won't get this trouble once more.\n"
 235                                " After that goto \"Administration -> Shutdown Citadel\" to make Citadel restart & retry to bind this port.\n")};
 236
 237
 238 void LogPrintMessages(long err)
 239 {
 240         StrBuf *Message;
 241         StrBuf *List, *DetailList;
 242         ConstStr *Short, *Where, *Hint;
 243
 244
 245         Message = NewStrBufPlain(NULL,
 246                                  StrLength(portlist) + StrLength(errormessages));
 247
 248         DetailErrorFlags = DetailErrorFlags & ~err;
 249
 250         switch (err)
 251         {
 252         case ERR_PORT:
 253                 Short = &ErrPortShort;
 254                 Where = &ErrPortWhere;
 255                 Hint  = &ErrPortHint;
 256                 List  = portlist;
 257                 DetailList = errormessages;
 258                 break;
 259         default:
 260                 Short = &Empty;
 261                 Where = &Empty;
 262                 Hint  = &Empty;
 263                 List  = NULL;
 264                 DetailList = NULL;
 265         }
 266
 267         StrBufAppendBufPlain(Message, CKEY(ErrGeneral[0]), 0);
 268         StrBufAppendBufPlain(Message, CKEY(*Short), 0);
 269         StrBufAppendBufPlain(Message, CKEY(ErrGeneral[1]), 0);
 270         StrBufAppendBufPlain(Message, CKEY(*Where), 0);
 271         StrBufAppendBuf(Message, List, 0);
 272         StrBufAppendBufPlain(Message, HKEY("\n\n"), 0);
 273         StrBufAppendBufPlain(Message, CKEY(*Hint), 0);
 274         StrBufAppendBufPlain(Message, HKEY("\n\n"), 0);
 275         StrBufAppendBufPlain(Message, CKEY(ErrGeneral[2]), 0);
 276         StrBufAppendBuf(Message, DetailList, 0);
 277         StrBufAppendBufPlain(Message, HKEY("\n\n"), 0);
 278         StrBufAppendBufPlain(Message, CKEY(ErrGeneral[3]), 0);
 279
 280         MOD_syslog(LOG_EMERG, "%s", ChrPtr(Message));
 281         MOD_syslog(LOG_EMERG, "%s", ErrSubject);
 282         quickie_message("Citadel", NULL, NULL, AIDEROOM, ChrPtr(Message), FMT_FIXED, ErrSubject);
 283
 284         FreeStrBuf(&Message);
 285         FreeStrBuf(&List);
 286         FreeStrBuf(&DetailList);
 287 }
 288
 289
 290 void AddPortError(char *Port, char *ErrorMessage)
 291 {
 292         long len;
 293
 294         DetailErrorFlags |= ERR_PORT;
 295
 296         len = StrLength(errormessages);
 297         if (len > 0) StrBufAppendBufPlain(errormessages, HKEY("; "), 0);
 298         else errormessages = NewStrBuf();
 299         StrBufAppendBufPlain(errormessages, ErrorMessage, -1, 0);
 300
 301
 302         len = StrLength(portlist);
 303         if (len > 0) StrBufAppendBufPlain(portlist, HKEY(";"), 0);
 304         else portlist = NewStrBuf();
 305         StrBufAppendBufPlain(portlist, Port, -1, 0);
 306 }
 307
 308
 309 int DLoader_Exec_Cmd(char *cmdbuf)
 310 {
 311         void *vP;
 312         ProtoFunctionHook *p;
 313
 314         if (GetHash(ProtoHookList, cmdbuf, 4, &vP) && (vP != NULL)) {
 315                 p = (ProtoFunctionHook*) vP;
 316                 p->handler(&cmdbuf[5]);
 317                 return 1;
 318         }
 319         return 0;
 320 }
 321
 322 long FourHash(const char *key, long length)
 323 {
 324         int i;
 325         int ret = 0;
 326         const unsigned char *ptr = (const unsigned char*)key;
 327
 328         for (i = 0; i < 4; i++, ptr ++)
 329                 ret = (ret << 8) |
 330                         ( ((*ptr >= 'a') &&
 331                            (*ptr <= 'z'))?
 332                           *ptr - 'a' + 'A':
 333                           *ptr);
 334
 335         return ret;
 336 }
 337
 338 void CtdlRegisterDebugFlagHook(const char *Name, long Len, CtdlDbgFunction F, const int *LogP)
 339 {
 340         LogDebugEntry *E;
 341         if (LogDebugEntryTable == NULL)
 342                 LogDebugEntryTable = NewHash(1, NULL);
 343         E = (LogDebugEntry*) malloc(sizeof(LogDebugEntry));
 344         E->F = F;
 345         E->Name = Name;
 346         E->Len = Len;
 347         E->LogP = LogP;
 348         Put(LogDebugEntryTable, Name, Len, E, NULL);
 349
 350 }
 351 void CtdlSetDebugLogFacilities(const char **Str, long n)
 352 {
 353         StrBuf *Token = NULL;
 354         StrBuf *Buf = NULL;
 355         const char *ch;
 356         int i;
 357         int DoAll = 0;
 358         void *vptr;
 359
 360         for (i=0; i < n; i++){
 361                 if ((Str[i] != NULL) && !IsEmptyStr(Str[i])) {
 362                         if (strcmp(Str[i], "all") == 0) {
 363                                 DoAll = 1;
 364                                 continue;
 365                         }
 366                         Buf = NewStrBufPlain(Str[i], -1);
 367                         ch = NULL;
 368                         if (Token == NULL)
 369                                 Token = NewStrBufPlain(NULL, StrLength(Buf));
 370                         while ((ch != StrBufNOTNULL) &&
 371                                StrBufExtract_NextToken(Token, Buf, &ch, ',')) {
 372                                 if (GetHash(LogDebugEntryTable, SKEY(Token), &vptr) &&
 373                                     (vptr != NULL))
 374                                 {
 375                                         LogDebugEntry *E = (LogDebugEntry*)vptr;
 376                                         E->F(1);
 377                                 }
 378                         }
 379                 }
 380                 FreeStrBuf(&Buf);
 381         }
 382         FreeStrBuf(&Token);
 383         if (DoAll) {
 384                 long HKLen;
 385                 const char *ch;
 386                 HashPos *Pos;
 387
 388                 Pos = GetNewHashPos(LogDebugEntryTable, 0);
 389                 while (GetNextHashPos(LogDebugEntryTable, Pos, &HKLen, &ch, &vptr)) {
 390                         LogDebugEntry *E = (LogDebugEntry*)vptr;
 391                         E->F(1);
 392                 }
 393
 394                 DeleteHashPos(&Pos);
 395         }
 396 }
 397 void cmd_log_get(char *argbuf)
 398 {
 399         long HKLen;
 400         const char *ch;
 401         HashPos *Pos;
 402         void *vptr;
 403
 404         if (CtdlAccessCheck(ac_aide)) return;
 405
 406         cprintf("%d Log modules enabled:\n", LISTING_FOLLOWS);
 407
 408         Pos = GetNewHashPos(LogDebugEntryTable, 0);
 409
 410         while (GetNextHashPos(LogDebugEntryTable, Pos, &HKLen, &ch, &vptr)) {
 411                 LogDebugEntry *E = (LogDebugEntry*)vptr;
 412                 cprintf("%s|%d\n", ch, *E->LogP);
 413         }
 414
 415         DeleteHashPos(&Pos);
 416         cprintf("000\n");
 417 }
 418 void cmd_log_set(char *argbuf)
 419 {
 420         void *vptr;
 421         int lset;
 422         int wlen;
 423         char which[SIZ] = "";
 424
 425         if (CtdlAccessCheck(ac_aide)) return;
 426
 427         wlen = extract_token(which, argbuf, 0, '|', sizeof(which));
 428         if (wlen < 0) wlen = 0;
 429         lset = extract_int(argbuf, 1);
 430         if (lset != 0) lset = 1;
 431         if (GetHash(LogDebugEntryTable, which, wlen, &vptr) &&
 432             (vptr != NULL))
 433         {
 434                 LogDebugEntry *E = (LogDebugEntry*)vptr;
 435                 E->F(lset);
 436                 cprintf("%d %s|%d\n", CIT_OK, which, lset);
 437         }
 438         else {
 439                 cprintf("%d Log setting %s not known\n",
 440                         ERROR, which);
 441         }
 442 }
 443 void CtdlDestroyDebugTable(void)
 444 {
 445
 446         DeleteHash(&LogDebugEntryTable);
 447 }
 448
 449 void CtdlRegisterProtoHook(void (*handler) (char *), char *cmd, char *desc)
 450 {
 451         ProtoFunctionHook *p;
 452
 453         if (ProtoHookList == NULL)
 454                 ProtoHookList = NewHash (1, FourHash);
 455
 456
 457         p = (ProtoFunctionHook *)
 458                 malloc(sizeof(ProtoFunctionHook));
 459
 460         if (p == NULL) {
 461                 fprintf(stderr, "can't malloc new ProtoFunctionHook\n");
 462                 exit(EXIT_FAILURE);
 463         }
 464         p->handler = handler;
 465         p->cmd = cmd;
 466         p->desc = desc;
 467
 468         Put(ProtoHookList, cmd, 4, p, NULL);
 469         MOD_syslog(LOG_DEBUG, "Registered server command %s (%s)\n", cmd, desc);
 470 }
 471
 472 void CtdlDestroyProtoHooks(void)
 473 {
 474
 475         DeleteHash(&ProtoHookList);
 476 }
 477
 478
 479 void CtdlRegisterCleanupHook(void (*fcn_ptr) (void))
 480 {
 481
 482         CleanupFunctionHook *newfcn;
 483
 484         newfcn = (CleanupFunctionHook *)
 485             malloc(sizeof(CleanupFunctionHook));
 486         newfcn->next = CleanupHookTable;
 487         newfcn->h_function_pointer = fcn_ptr;
 488         CleanupHookTable = newfcn;
 489
 490         MODM_syslog(LOG_DEBUG, "Registered a new cleanup function\n");
 491 }
 492
 493
 494 void CtdlUnregisterCleanupHook(void (*fcn_ptr) (void))
 495 {
 496         CleanupFunctionHook *cur, *p, *last;
 497         last = NULL;
 498         cur = CleanupHookTable;
 499         while (cur != NULL)
 500         {
 501                 if (fcn_ptr == cur->h_function_pointer)
 502                 {
 503                         MODM_syslog(LOG_DEBUG, "Unregistered cleanup function\n");
 504                         p = cur->next;
 505
 506                         free(cur);
 507                         cur = NULL;
 508
 509                         if (last != NULL)
 510                                 last->next = p;
 511                         else
 512                                 CleanupHookTable = p;
 513                         cur = p;
 514                 }
 515                 else {
 516                         last = cur;
 517                         cur = cur->next;
 518                 }
 519         }
 520 }
 521
 522
 523 void CtdlDestroyCleanupHooks(void)
 524 {
 525         CleanupFunctionHook *cur, *p;
 526
 527         cur = CleanupHookTable;
 528         while (cur != NULL)
 529         {
 530                 MODM_syslog(LOG_DEBUG, "Destroyed cleanup function\n");
 531                 p = cur->next;
 532                 free(cur);
 533                 cur = p;
 534         }
 535         CleanupHookTable = NULL;
 536 }
 537
 538 void CtdlRegisterEVCleanupHook(void (*fcn_ptr) (void))
 539 {
 540
 541         CleanupFunctionHook *newfcn;
 542
 543         newfcn = (CleanupFunctionHook *)
 544             malloc(sizeof(CleanupFunctionHook));
 545         newfcn->next = EVCleanupHookTable;
 546         newfcn->h_function_pointer = fcn_ptr;
 547         EVCleanupHookTable = newfcn;
 548
 549         MODM_syslog(LOG_DEBUG, "Registered a new cleanup function\n");
 550 }
 551
 552
 553 void CtdlUnregisterEVCleanupHook(void (*fcn_ptr) (void))
 554 {
 555         CleanupFunctionHook *cur, *p, *last;
 556         last = NULL;
 557         cur = EVCleanupHookTable;
 558         while (cur != NULL)
 559         {
 560                 if (fcn_ptr == cur->h_function_pointer)
 561                 {
 562                         MODM_syslog(LOG_DEBUG, "Unregistered cleanup function\n");
 563                         p = cur->next;
 564
 565                         free(cur);
 566                         cur = NULL;
 567
 568                         if (last != NULL)
 569                                 last->next = p;
 570                         else
 571                                 EVCleanupHookTable = p;
 572                         cur = p;
 573                 }
 574                 else {
 575                         last = cur;
 576                         cur = cur->next;
 577                 }
 578         }
 579 }
 580
 581
 582 void CtdlDestroyEVCleanupHooks(void)
 583 {
 584         CleanupFunctionHook *cur, *p;
 585
 586         cur = EVCleanupHookTable;
 587         while (cur != NULL)
 588         {
 589                 MODM_syslog(LOG_DEBUG, "Destroyed cleanup function\n");
 590                 p = cur->next;
 591                 free(cur);
 592                 cur = p;
 593         }
 594         EVCleanupHookTable = NULL;
 595 }
 596
 597
 598 void CtdlRegisterSessionHook(void (*fcn_ptr) (void), int EventType)
 599 {
 600
 601         SessionFunctionHook *newfcn;
 602
 603         newfcn = (SessionFunctionHook *)
 604             malloc(sizeof(SessionFunctionHook));
 605         newfcn->next = SessionHookTable;
 606         newfcn->h_function_pointer = fcn_ptr;
 607         newfcn->eventtype = EventType;
 608         SessionHookTable = newfcn;
 609
 610         MOD_syslog(LOG_DEBUG, "Registered a new session function (type %d)\n",
 611                    EventType);
 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 }