citadel/modules/sieve/serv_sieve.c

   1 /*
   2  * $Id$
   3  *
   4  * This module glues libSieve to the Citadel server in order to implement
   5  * the Sieve mailbox filtering language (RFC 3028).
   6  *
   7  * Copyright (c) 1987-2010 by the citadel.org team
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 3 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  22  */
  23
  24 #include "sysdep.h"
  25 #include <stdlib.h>
  26 #include <unistd.h>
  27 #include <stdio.h>
  28 #include <fcntl.h>
  29 #include <ctype.h>
  30 #include <pwd.h>
  31 #include <errno.h>
  32 #include <sys/types.h>
  33
  34 #if TIME_WITH_SYS_TIME
  35 # include <sys/time.h>
  36 # include <time.h>
  37 #else
  38 # if HAVE_SYS_TIME_H
  39 #  include <sys/time.h>
  40 # else
  41 #  include <time.h>
  42 # endif
  43 #endif
  44
  45 #include <sys/wait.h>
  46 #include <string.h>
  47 #include <limits.h>
  48 #include <libcitadel.h>
  49 #include "citadel.h"
  50 #include "server.h"
  51 #include "citserver.h"
  52 #include "support.h"
  53 #include "config.h"
  54 #include "database.h"
  55 #include "msgbase.h"
  56 #include "internet_addressing.h"
  57 #include "ctdl_module.h"
  58 #include "serv_sieve.h"
  59
  60 struct RoomProcList *sieve_list = NULL;
  61 char *msiv_extensions = NULL;
  62
  63
  64 /*
  65  * Callback function to send libSieve trace messages to Citadel log facility
  66  */
  67 int ctdl_debug(sieve2_context_t *s, void *my)
  68 {
  69         CtdlLogPrintf(CTDL_DEBUG, "Sieve: %s\n", sieve2_getvalue_string(s, "message"));
  70         return SIEVE2_OK;
  71 }
  72
  73
  74 /*
  75  * Callback function to log script parsing errors
  76  */
  77 int ctdl_errparse(sieve2_context_t *s, void *my)
  78 {
  79         CtdlLogPrintf(CTDL_WARNING, "Error in script, line %d: %s\n",
  80                 sieve2_getvalue_int(s, "lineno"),
  81                 sieve2_getvalue_string(s, "message")
  82         );
  83         return SIEVE2_OK;
  84 }
  85
  86
  87 /*
  88  * Callback function to log script execution errors
  89  */
  90 int ctdl_errexec(sieve2_context_t *s, void *my)
  91 {
  92         CtdlLogPrintf(CTDL_WARNING, "Error executing script: %s\n",
  93                 sieve2_getvalue_string(s, "message")
  94         );
  95         return SIEVE2_OK;
  96 }
  97
  98
  99 /*
 100  * Callback function to redirect a message to a different folder
 101  */
 102 int ctdl_redirect(sieve2_context_t *s, void *my)
 103 {
 104         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 105         struct CtdlMessage *msg = NULL;
 106         struct recptypes *valid = NULL;
 107         char recp[256];
 108
 109         safestrncpy(recp, sieve2_getvalue_string(s, "address"), sizeof recp);
 110
 111         CtdlLogPrintf(CTDL_DEBUG, "Action is REDIRECT, recipient <%s>\n", recp);
 112
 113         valid = validate_recipients(recp, NULL, 0);
 114         if (valid == NULL) {
 115                 CtdlLogPrintf(CTDL_WARNING, "REDIRECT failed: bad recipient <%s>\n", recp);
 116                 return SIEVE2_ERROR_BADARGS;
 117         }
 118         if (valid->num_error > 0) {
 119                 CtdlLogPrintf(CTDL_WARNING, "REDIRECT failed: bad recipient <%s>\n", recp);
 120                 free_recipients(valid);
 121                 return SIEVE2_ERROR_BADARGS;
 122         }
 123
 124         msg = CtdlFetchMessage(cs->msgnum, 1);
 125         if (msg == NULL) {
 126                 CtdlLogPrintf(CTDL_WARNING, "REDIRECT failed: unable to fetch msg %ld\n", cs->msgnum);
 127                 free_recipients(valid);
 128                 return SIEVE2_ERROR_BADARGS;
 129         }
 130
 131         CtdlSubmitMsg(msg, valid, NULL, 0);
 132         cs->cancel_implicit_keep = 1;
 133         free_recipients(valid);
 134         CtdlFreeMessage(msg);
 135         return SIEVE2_OK;
 136 }
 137
 138
 139 /*
 140  * Callback function to indicate that a message *will* be kept in the inbox
 141  */
 142 int ctdl_keep(sieve2_context_t *s, void *my)
 143 {
 144         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 145
 146         CtdlLogPrintf(CTDL_DEBUG, "Action is KEEP\n");
 147
 148         cs->keep = 1;
 149         cs->cancel_implicit_keep = 1;
 150         return SIEVE2_OK;
 151 }
 152
 153
 154 /*
 155  * Callback function to file a message into a different mailbox
 156  */
 157 int ctdl_fileinto(sieve2_context_t *s, void *my)
 158 {
 159         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 160         const char *dest_folder = sieve2_getvalue_string(s, "mailbox");
 161         int c;
 162         char foldername[256];
 163         char original_room_name[ROOMNAMELEN];
 164
 165         CtdlLogPrintf(CTDL_DEBUG, "Action is FILEINTO, destination is <%s>\n", dest_folder);
 166
 167         /* FILEINTO 'INBOX' is the same thing as KEEP */
 168         if ( (!strcasecmp(dest_folder, "INBOX")) || (!strcasecmp(dest_folder, MAILROOM)) ) {
 169                 cs->keep = 1;
 170                 cs->cancel_implicit_keep = 1;
 171                 return SIEVE2_OK;
 172         }
 173
 174         /* Remember what room we came from */
 175         safestrncpy(original_room_name, CC->room.QRname, sizeof original_room_name);
 176
 177         /* First try a mailbox name match (check personal mail folders first) */
 178         snprintf(foldername, sizeof foldername, "%010ld.%s", cs->usernum, dest_folder);
 179         c = CtdlGetRoom(&CC->room, foldername);
 180
 181         /* Then a regular room name match (public and private rooms) */
 182         if (c != 0) {
 183                 safestrncpy(foldername, dest_folder, sizeof foldername);
 184                 c = CtdlGetRoom(&CC->room, foldername);
 185         }
 186
 187         if (c != 0) {
 188                 CtdlLogPrintf(CTDL_WARNING, "FILEINTO failed: target <%s> does not exist\n", dest_folder);
 189                 return SIEVE2_ERROR_BADARGS;
 190         }
 191
 192         /* Yes, we actually have to go there */
 193         CtdlUserGoto(NULL, 0, 0, NULL, NULL);
 194
 195         c = CtdlSaveMsgPointersInRoom(NULL, &cs->msgnum, 1, 0, NULL, 0);
 196
 197         /* Go back to the room we came from */
 198         if (strcasecmp(original_room_name, CC->room.QRname)) {
 199                 CtdlUserGoto(original_room_name, 0, 0, NULL, NULL);
 200         }
 201
 202         if (c == 0) {
 203                 cs->cancel_implicit_keep = 1;
 204                 return SIEVE2_OK;
 205         }
 206         else {
 207                 return SIEVE2_ERROR_BADARGS;
 208         }
 209 }
 210
 211
 212 /*
 213  * Callback function to indicate that a message should be discarded.
 214  */
 215 int ctdl_discard(sieve2_context_t *s, void *my)
 216 {
 217         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 218
 219         CtdlLogPrintf(CTDL_DEBUG, "Action is DISCARD\n");
 220
 221         /* Cancel the implicit keep.  That's all there is to it. */
 222         cs->cancel_implicit_keep = 1;
 223         return SIEVE2_OK;
 224 }
 225
 226
 227
 228 /*
 229  * Callback function to indicate that a message should be rejected
 230  */
 231 int ctdl_reject(sieve2_context_t *s, void *my)
 232 {
 233         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 234         char *reject_text = NULL;
 235
 236         CtdlLogPrintf(CTDL_DEBUG, "Action is REJECT\n");
 237
 238         /* If we don't know who sent the message, do a DISCARD instead. */
 239         if (IsEmptyStr(cs->sender)) {
 240                 CtdlLogPrintf(CTDL_INFO, "Unknown sender.  Doing DISCARD instead of REJECT.\n");
 241                 return ctdl_discard(s, my);
 242         }
 243
 244         /* Assemble the reject message. */
 245         reject_text = malloc(strlen(sieve2_getvalue_string(s, "message")) + 1024);
 246         if (reject_text == NULL) {
 247                 return SIEVE2_ERROR_FAIL;
 248         }
 249
 250         sprintf(reject_text,
 251                 "Content-type: text/plain\n"
 252                 "\n"
 253                 "The message was refused by the recipient's mail filtering program.\n"
 254                 "The reason given was as follows:\n"
 255                 "\n"
 256                 "%s\n"
 257                 "\n"
 258         ,
 259                 sieve2_getvalue_string(s, "message")
 260         );
 261
 262         quickie_message(        /* This delivers the message */
 263                 NULL,
 264                 cs->envelope_to,
 265                 cs->sender,
 266                 NULL,
 267                 reject_text,
 268                 FMT_RFC822,
 269                 "Delivery status notification"
 270         );
 271
 272         free(reject_text);
 273         cs->cancel_implicit_keep = 1;
 274         return SIEVE2_OK;
 275 }
 276
 277
 278
 279 /*
 280  * Callback function to indicate that a vacation message should be generated
 281  */
 282 int ctdl_vacation(sieve2_context_t *s, void *my)
 283 {
 284         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 285         struct sdm_vacation *vptr;
 286         int days = 1;
 287         const char *message;
 288         char *vacamsg_text = NULL;
 289         char vacamsg_subject[1024];
 290
 291         CtdlLogPrintf(CTDL_DEBUG, "Action is VACATION\n");
 292
 293         message = sieve2_getvalue_string(s, "message");
 294         if (message == NULL) return SIEVE2_ERROR_BADARGS;
 295
 296         if (sieve2_getvalue_string(s, "subject") != NULL) {
 297                 safestrncpy(vacamsg_subject, sieve2_getvalue_string(s, "subject"), sizeof vacamsg_subject);
 298         }
 299         else {
 300                 snprintf(vacamsg_subject, sizeof vacamsg_subject, "Re: %s", cs->subject);
 301         }
 302
 303         days = sieve2_getvalue_int(s, "days");
 304         if (days < 1) days = 1;
 305         if (days > MAX_VACATION) days = MAX_VACATION;
 306
 307         /* Check to see whether we've already alerted this sender that we're on vacation. */
 308         for (vptr = cs->u->first_vacation; vptr != NULL; vptr = vptr->next) {
 309                 if (!strcasecmp(vptr->fromaddr, cs->sender)) {
 310                         if ( (time(NULL) - vptr->timestamp) < (days * 86400) ) {
 311                                 CtdlLogPrintf(CTDL_DEBUG, "Already alerted <%s> recently.\n", cs->sender);
 312                                 return SIEVE2_OK;
 313                         }
 314                 }
 315         }
 316
 317         /* Assemble the reject message. */
 318         vacamsg_text = malloc(strlen(message) + 1024);
 319         if (vacamsg_text == NULL) {
 320                 return SIEVE2_ERROR_FAIL;
 321         }
 322
 323         sprintf(vacamsg_text,
 324                 "Content-type: text/plain charset=utf-8\n"
 325                 "\n"
 326                 "%s\n"
 327                 "\n"
 328         ,
 329                 message
 330         );
 331
 332         quickie_message(        /* This delivers the message */
 333                 NULL,
 334                 cs->envelope_to,
 335                 cs->sender,
 336                 NULL,
 337                 vacamsg_text,
 338                 FMT_RFC822,
 339                 vacamsg_subject
 340         );
 341
 342         free(vacamsg_text);
 343
 344         /* Now update the list to reflect the fact that we've alerted this sender.
 345          * If they're already in the list, just update the timestamp.
 346          */
 347         for (vptr = cs->u->first_vacation; vptr != NULL; vptr = vptr->next) {
 348                 if (!strcasecmp(vptr->fromaddr, cs->sender)) {
 349                         vptr->timestamp = time(NULL);
 350                         return SIEVE2_OK;
 351                 }
 352         }
 353
 354         /* If we get to this point, create a new record.
 355          */
 356         vptr = malloc(sizeof(struct sdm_vacation));
 357         memset(vptr, 0, sizeof(struct sdm_vacation));
 358         vptr->timestamp = time(NULL);
 359         safestrncpy(vptr->fromaddr, cs->sender, sizeof vptr->fromaddr);
 360         vptr->next = cs->u->first_vacation;
 361         cs->u->first_vacation = vptr;
 362
 363         return SIEVE2_OK;
 364 }
 365
 366
 367 /*
 368  * Callback function to parse addresses per local system convention
 369  * It is disabled because we don't support subaddresses.
 370  */
 371 #if 0
 372 int ctdl_getsubaddress(sieve2_context_t *s, void *my)
 373 {
 374         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 375
 376         /* libSieve does not take ownership of the memory used here.  But, since we
 377          * are just pointing to locations inside a struct which we are going to free
 378          * later, we're ok.
 379          */
 380         sieve2_setvalue_string(s, "user", cs->recp_user);
 381         sieve2_setvalue_string(s, "detail", "");
 382         sieve2_setvalue_string(s, "localpart", cs->recp_user);
 383         sieve2_setvalue_string(s, "domain", cs->recp_node);
 384         return SIEVE2_OK;
 385 }
 386 #endif
 387
 388
 389 /*
 390  * Callback function to parse message envelope
 391  */
 392 int ctdl_getenvelope(sieve2_context_t *s, void *my)
 393 {
 394         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 395
 396         CtdlLogPrintf(CTDL_DEBUG, "Action is GETENVELOPE\nEnvFrom: %s\n  EnvTo: %s\n",
 397                 cs->envelope_from, cs->envelope_to);
 398
 399         if (cs->envelope_from != NULL) {
 400                 if ((cs->envelope_from[0] != '@')&&(cs->envelope_from[strlen(cs->envelope_from)-1] != '@')) {
 401                         sieve2_setvalue_string(s, "from", cs->envelope_from);
 402                 }
 403                 else {
 404                         sieve2_setvalue_string(s, "from", "invalid_envelope_from@example.org");
 405                 }
 406         }
 407         else {
 408                 sieve2_setvalue_string(s, "from", "null_envelope_from@example.org");
 409         }
 410
 411
 412         if (cs->envelope_to != NULL) {
 413                 if ((cs->envelope_to[0] != '@') && (cs->envelope_to[strlen(cs->envelope_to)-1] != '@')) {
 414                         sieve2_setvalue_string(s, "to", cs->envelope_to);
 415                 }
 416                 else {
 417                         sieve2_setvalue_string(s, "to", "invalid_envelope_to@example.org");
 418                 }
 419         }
 420         else {
 421                 sieve2_setvalue_string(s, "to", "null_envelope_to@example.org");
 422         }
 423
 424         return SIEVE2_OK;
 425 }
 426
 427
 428 /*
 429  * Callback function to fetch message body
 430  * (Uncomment the code if we implement this extension)
 431  *
 432 int ctdl_getbody(sieve2_context_t *s, void *my)
 433 {
 434         return SIEVE2_ERROR_UNSUPPORTED;
 435 }
 436  *
 437  */
 438
 439
 440 /*
 441  * Callback function to fetch message size
 442  */
 443 int ctdl_getsize(sieve2_context_t *s, void *my)
 444 {
 445         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 446         struct MetaData smi;
 447
 448         GetMetaData(&smi, cs->msgnum);
 449
 450         if (smi.meta_rfc822_length > 0L) {
 451                 sieve2_setvalue_int(s, "size", (int)smi.meta_rfc822_length);
 452                 return SIEVE2_OK;
 453         }
 454
 455         return SIEVE2_ERROR_UNSUPPORTED;
 456 }
 457
 458
 459 /*
 460  * Callback function to retrieve the sieve script
 461  */
 462 int ctdl_getscript(sieve2_context_t *s, void *my) {
 463         struct sdm_script *sptr;
 464         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 465
 466         for (sptr=cs->u->first_script; sptr!=NULL; sptr=sptr->next) {
 467                 if (sptr->script_active > 0) {
 468                         CtdlLogPrintf(CTDL_DEBUG, "ctdl_getscript() is using script '%s'\n", sptr->script_name);
 469                         sieve2_setvalue_string(s, "script", sptr->script_content);
 470                         return SIEVE2_OK;
 471                 }
 472         }
 473
 474         CtdlLogPrintf(CTDL_DEBUG, "ctdl_getscript() found no active script\n");
 475         return SIEVE2_ERROR_GETSCRIPT;
 476 }
 477
 478 /*
 479  * Callback function to retrieve message headers
 480  */
 481 int ctdl_getheaders(sieve2_context_t *s, void *my) {
 482
 483         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 484
 485         CtdlLogPrintf(CTDL_DEBUG, "ctdl_getheaders() was called\n");
 486         sieve2_setvalue_string(s, "allheaders", cs->rfc822headers);
 487         return SIEVE2_OK;
 488 }
 489
 490
 491
 492 /*
 493  * Add a room to the list of those rooms which potentially require sieve processing
 494  */
 495 void sieve_queue_room(struct ctdlroom *which_room) {
 496         struct RoomProcList *ptr;
 497
 498         ptr = (struct RoomProcList *) malloc(sizeof (struct RoomProcList));
 499         if (ptr == NULL) return;
 500
 501         safestrncpy(ptr->name, which_room->QRname, sizeof ptr->name);
 502         begin_critical_section(S_SIEVELIST);
 503         ptr->next = sieve_list;
 504         sieve_list = ptr;
 505         end_critical_section(S_SIEVELIST);
 506         CtdlLogPrintf(CTDL_DEBUG, "<%s> queued for Sieve processing\n", which_room->QRname);
 507 }
 508
 509
 510
 511 /*
 512  * Perform sieve processing for one message (called by sieve_do_room() for each message)
 513  */
 514 void sieve_do_msg(long msgnum, void *userdata) {
 515         struct sdm_userdata *u = (struct sdm_userdata *) userdata;
 516         sieve2_context_t *sieve2_context;
 517         struct ctdl_sieve my;
 518         int res;
 519         struct CtdlMessage *msg;
 520         int i;
 521         size_t headers_len = 0;
 522         int len = 0;
 523
 524         if (u == NULL)
 525         {
 526                 CtdlLogPrintf(CTDL_EMERG, "Can't process message <%ld> without userdata!\n", msgnum);
 527                 return;
 528         }
 529
 530         sieve2_context = u->sieve2_context;
 531
 532         CtdlLogPrintf(CTDL_DEBUG, "Performing sieve processing on msg <%ld>\n", msgnum);
 533
 534         /*
 535          * Make sure you include message body so you can get those second-level headers ;)
 536          */
 537         msg = CtdlFetchMessage(msgnum, 1);
 538         if (msg == NULL) return;
 539
 540         /*
 541          * Grab the message headers so we can feed them to libSieve.
 542          * Use HEADERS_ONLY rather than HEADERS_FAST in order to include second-level headers.
 543          */
 544         CC->redirect_buffer = NewStrBufPlain(NULL, SIZ);
 545         CtdlOutputPreLoadedMsg(msg, MT_RFC822, HEADERS_ONLY, 0, 1, 0);
 546         headers_len = StrLength(CC->redirect_buffer);
 547         my.rfc822headers = SmashStrBuf(&CC->redirect_buffer);
 548
 549         /*
 550          * libSieve clobbers the stack if it encounters badly formed
 551          * headers.  Sanitize our headers by stripping nonprintable
 552          * characters.
 553          */
 554         for (i=0; i<headers_len; ++i) {
 555                 if (!isascii(my.rfc822headers[i])) {
 556                         my.rfc822headers[i] = '_';
 557                 }
 558         }
 559
 560         my.keep = 0;                            /* Set to 1 to declare an *explicit* keep */
 561         my.cancel_implicit_keep = 0;            /* Some actions will cancel the implicit keep */
 562         my.usernum = atol(CC->room.QRname);     /* Keep track of the owner of the room's namespace */
 563         my.msgnum = msgnum;                     /* Keep track of the message number in our local store */
 564         my.u = u;                               /* Hand off a pointer to the rest of this info */
 565
 566         /* Keep track of the recipient so we can do handling based on it later */
 567         process_rfc822_addr(msg->cm_fields['R'], my.recp_user, my.recp_node, my.recp_name);
 568
 569         /* Keep track of the sender so we can use it for REJECT and VACATION responses */
 570         if (msg->cm_fields['F'] != NULL) {
 571                 safestrncpy(my.sender, msg->cm_fields['F'], sizeof my.sender);
 572         }
 573         else if ( (msg->cm_fields['A'] != NULL) && (msg->cm_fields['N'] != NULL) ) {
 574                 snprintf(my.sender, sizeof my.sender, "%s@%s", msg->cm_fields['A'], msg->cm_fields['N']);
 575         }
 576         else if (msg->cm_fields['A'] != NULL) {
 577                 safestrncpy(my.sender, msg->cm_fields['A'], sizeof my.sender);
 578         }
 579         else {
 580                 strcpy(my.sender, "");
 581         }
 582
 583         /* Keep track of the subject so we can use it for VACATION responses */
 584         if (msg->cm_fields['U'] != NULL) {
 585                 safestrncpy(my.subject, msg->cm_fields['U'], sizeof my.subject);
 586         }
 587         else {
 588                 strcpy(my.subject, "");
 589         }
 590
 591         /* Keep track of the envelope-from address (use body-from if not found) */
 592         if (msg->cm_fields['P'] != NULL) {
 593                 safestrncpy(my.envelope_from, msg->cm_fields['P'], sizeof my.envelope_from);
 594                 stripallbut(my.envelope_from, '<', '>');
 595         }
 596         else if (msg->cm_fields['F'] != NULL) {
 597                 safestrncpy(my.envelope_from, msg->cm_fields['F'], sizeof my.envelope_from);
 598                 stripallbut(my.envelope_from, '<', '>');
 599         }
 600         else {
 601                 strcpy(my.envelope_from, "");
 602         }
 603
 604         len = strlen(my.envelope_from);
 605         for (i=0; i<len; ++i) {
 606                 if (isspace(my.envelope_from[i])) my.envelope_from[i] = '_';
 607         }
 608         if (haschar(my.envelope_from, '@') == 0) {
 609                 strcat(my.envelope_from, "@");
 610                 strcat(my.envelope_from, config.c_fqdn);
 611         }
 612
 613         /* Keep track of the envelope-to address (use body-to if not found) */
 614         if (msg->cm_fields['V'] != NULL) {
 615                 safestrncpy(my.envelope_to, msg->cm_fields['V'], sizeof my.envelope_to);
 616                 stripallbut(my.envelope_to, '<', '>');
 617         }
 618         else if (msg->cm_fields['R'] != NULL) {
 619                 safestrncpy(my.envelope_to, msg->cm_fields['R'], sizeof my.envelope_to);
 620                 if (msg->cm_fields['D'] != NULL) {
 621                         strcat(my.envelope_to, "@");
 622                         strcat(my.envelope_to, msg->cm_fields['D']);
 623                 }
 624                 stripallbut(my.envelope_to, '<', '>');
 625         }
 626         else {
 627                 strcpy(my.envelope_to, "");
 628         }
 629
 630         len = strlen(my.envelope_to);
 631         for (i=0; i<len; ++i) {
 632                 if (isspace(my.envelope_to[i])) my.envelope_to[i] = '_';
 633         }
 634         if (haschar(my.envelope_to, '@') == 0) {
 635                 strcat(my.envelope_to, "@");
 636                 strcat(my.envelope_to, config.c_fqdn);
 637         }
 638
 639         CtdlFreeMessage(msg);
 640
 641         sieve2_setvalue_string(sieve2_context, "allheaders", my.rfc822headers);
 642
 643         CtdlLogPrintf(CTDL_DEBUG, "Calling sieve2_execute()\n");
 644         res = sieve2_execute(sieve2_context, &my);
 645         if (res != SIEVE2_OK) {
 646                 CtdlLogPrintf(CTDL_CRIT, "sieve2_execute() returned %d: %s\n", res, sieve2_errstr(res));
 647         }
 648
 649         free(my.rfc822headers);
 650         my.rfc822headers = NULL;
 651
 652         /*
 653          * Delete the message from the inbox unless either we were told not to, or
 654          * if no other action was successfully taken.
 655          */
 656         if ( (!my.keep) && (my.cancel_implicit_keep) ) {
 657                 CtdlLogPrintf(CTDL_DEBUG, "keep is 0 -- deleting message from inbox\n");
 658                 CtdlDeleteMessages(CC->room.QRname, &msgnum, 1, "");
 659         }
 660
 661         CtdlLogPrintf(CTDL_DEBUG, "Completed sieve processing on msg <%ld>\n", msgnum);
 662         u->lastproc = msgnum;
 663
 664         return;
 665 }
 666
 667
 668
 669 /*
 670  * Given the on-disk representation of our Sieve config, load
 671  * it into an in-memory data structure.
 672  */
 673 void parse_sieve_config(char *conf, struct sdm_userdata *u) {
 674         char *ptr;
 675         char *c, *vacrec;
 676         char keyword[256];
 677         struct sdm_script *sptr;
 678         struct sdm_vacation *vptr;
 679
 680         ptr = conf;
 681         while (c = ptr, ptr = bmstrcasestr(ptr, CTDLSIEVECONFIGSEPARATOR), ptr != NULL) {
 682                 *ptr = 0;
 683                 ptr += strlen(CTDLSIEVECONFIGSEPARATOR);
 684
 685                 extract_token(keyword, c, 0, '|', sizeof keyword);
 686
 687                 if (!strcasecmp(keyword, "lastproc")) {
 688                         u->lastproc = extract_long(c, 1);
 689                 }
 690
 691                 else if (!strcasecmp(keyword, "script")) {
 692                         sptr = malloc(sizeof(struct sdm_script));
 693                         extract_token(sptr->script_name, c, 1, '|', sizeof sptr->script_name);
 694                         sptr->script_active = extract_int(c, 2);
 695                         remove_token(c, 0, '|');
 696                         remove_token(c, 0, '|');
 697                         remove_token(c, 0, '|');
 698                         sptr->script_content = strdup(c);
 699                         sptr->next = u->first_script;
 700                         u->first_script = sptr;
 701                 }
 702
 703                 else if (!strcasecmp(keyword, "vacation")) {
 704
 705                         if (c != NULL) while (vacrec=c, c=strchr(c, '\n'), (c != NULL)) {
 706
 707                                 *c = 0;
 708                                 ++c;
 709
 710                                 if (strncasecmp(vacrec, "vacation|", 9)) {
 711                                         vptr = malloc(sizeof(struct sdm_vacation));
 712                                         extract_token(vptr->fromaddr, vacrec, 0, '|', sizeof vptr->fromaddr);
 713                                         vptr->timestamp = extract_long(vacrec, 1);
 714                                         vptr->next = u->first_vacation;
 715                                         u->first_vacation = vptr;
 716                                 }
 717                         }
 718                 }
 719
 720                 /* ignore unknown keywords */
 721         }
 722 }
 723
 724 /*
 725  * We found the Sieve configuration for this user.
 726  * Now do something with it.
 727  */
 728 void get_sieve_config_backend(long msgnum, void *userdata) {
 729         struct sdm_userdata *u = (struct sdm_userdata *) userdata;
 730         struct CtdlMessage *msg;
 731         char *conf;
 732
 733         u->config_msgnum = msgnum;
 734         msg = CtdlFetchMessage(msgnum, 1);
 735         if (msg == NULL) {
 736                 u->config_msgnum = (-1) ;
 737                 return;
 738         }
 739
 740         conf = msg->cm_fields['M'];
 741         msg->cm_fields['M'] = NULL;
 742         CtdlFreeMessage(msg);
 743
 744         if (conf != NULL) {
 745                 parse_sieve_config(conf, u);
 746                 free(conf);
 747         }
 748
 749 }
 750
 751
 752 /*
 753  * Write our citadel sieve config back to disk
 754  *
 755  * (Set yes_write_to_disk to nonzero to make it actually write the config;
 756  * otherwise it just frees the data structures.)
 757  */
 758 void rewrite_ctdl_sieve_config(struct sdm_userdata *u, int yes_write_to_disk) {
 759         StrBuf *text;
 760         struct sdm_script *sptr;
 761         struct sdm_vacation *vptr;
 762
 763         text = NewStrBufPlain(NULL, SIZ);
 764         StrBufPrintf(text,
 765                      "Content-type: application/x-citadel-sieve-config\n"
 766                      "\n"
 767                      CTDLSIEVECONFIGSEPARATOR
 768                      "lastproc|%ld"
 769                      CTDLSIEVECONFIGSEPARATOR
 770                      ,
 771                      u->lastproc
 772                 );
 773
 774         while (u->first_script != NULL) {
 775                 StrBufAppendPrintf(text,
 776                                    "script|%s|%d|%s" CTDLSIEVECONFIGSEPARATOR,
 777                                    u->first_script->script_name,
 778                                    u->first_script->script_active,
 779                                    u->first_script->script_content
 780                         );
 781                 sptr = u->first_script;
 782                 u->first_script = u->first_script->next;
 783                 free(sptr->script_content);
 784                 free(sptr);
 785         }
 786
 787         if (u->first_vacation != NULL) {
 788
 789                 StrBufAppendPrintf(text, "vacation|\n");
 790                 while (u->first_vacation != NULL) {
 791                         if ( (time(NULL) - u->first_vacation->timestamp) < (MAX_VACATION * 86400)) {
 792                                 StrBufAppendPrintf(text, "%s|%ld\n",
 793                                                    u->first_vacation->fromaddr,
 794                                                    u->first_vacation->timestamp
 795                                         );
 796                         }
 797                         vptr = u->first_vacation;
 798                         u->first_vacation = u->first_vacation->next;
 799                         free(vptr);
 800                 }
 801                 StrBufAppendPrintf(text, CTDLSIEVECONFIGSEPARATOR);
 802         }
 803
 804         if (yes_write_to_disk)
 805         {
 806                 /* Save the config */
 807                 quickie_message("Citadel", NULL, NULL, u->config_roomname,
 808                                 ChrPtr(text),
 809                                 4,
 810                                 "Sieve configuration"
 811                 );
 812
 813                 /* And delete the old one */
 814                 if (u->config_msgnum > 0) {
 815                         CtdlDeleteMessages(u->config_roomname, &u->config_msgnum, 1, "");
 816                 }
 817         }
 818
 819         FreeStrBuf (&text);
 820
 821 }
 822
 823
 824 /*
 825  * This is our callback registration table for libSieve.
 826  */
 827 sieve2_callback_t ctdl_sieve_callbacks[] = {
 828         { SIEVE2_ACTION_REJECT,         ctdl_reject             },
 829         { SIEVE2_ACTION_VACATION,       ctdl_vacation           },
 830         { SIEVE2_ERRCALL_PARSE,         ctdl_errparse           },
 831         { SIEVE2_ERRCALL_RUNTIME,       ctdl_errexec            },
 832         { SIEVE2_ACTION_FILEINTO,       ctdl_fileinto           },
 833         { SIEVE2_ACTION_REDIRECT,       ctdl_redirect           },
 834         { SIEVE2_ACTION_DISCARD,        ctdl_discard            },
 835         { SIEVE2_ACTION_KEEP,           ctdl_keep               },
 836         { SIEVE2_SCRIPT_GETSCRIPT,      ctdl_getscript          },
 837         { SIEVE2_DEBUG_TRACE,           ctdl_debug              },
 838         { SIEVE2_MESSAGE_GETALLHEADERS, ctdl_getheaders         },
 839         { SIEVE2_MESSAGE_GETSIZE,       ctdl_getsize            },
 840         { SIEVE2_MESSAGE_GETENVELOPE,   ctdl_getenvelope        },
 841 /*
 842  * These actions are unsupported by Citadel so we don't declare them.
 843  *
 844         { SIEVE2_ACTION_NOTIFY,         ctdl_notify             },
 845         { SIEVE2_MESSAGE_GETSUBADDRESS, ctdl_getsubaddress      },
 846         { SIEVE2_MESSAGE_GETBODY,       ctdl_getbody            },
 847  *
 848  */
 849         { 0 }
 850 };
 851
 852
 853 /*
 854  * Perform sieve processing for a single room
 855  */
 856 void sieve_do_room(char *roomname) {
 857
 858         struct sdm_userdata u;
 859         sieve2_context_t *sieve2_context = NULL;        /* Context for sieve parser */
 860         int res;                                        /* Return code from libsieve calls */
 861         long orig_lastproc = 0;
 862
 863         memset(&u, 0, sizeof u);
 864
 865         /* See if the user who owns this 'mailbox' has any Sieve scripts that
 866          * require execution.
 867          */
 868         snprintf(u.config_roomname, sizeof u.config_roomname, "%010ld.%s", atol(roomname), USERCONFIGROOM);
 869         if (CtdlGetRoom(&CC->room, u.config_roomname) != 0) {
 870                 CtdlLogPrintf(CTDL_DEBUG, "<%s> does not exist.  No processing is required.\n", u.config_roomname);
 871                 return;
 872         }
 873
 874         /*
 875          * Find the sieve scripts and control record and do something
 876          */
 877         u.config_msgnum = (-1);
 878         CtdlForEachMessage(MSGS_LAST, 1, NULL, SIEVECONFIG, NULL,
 879                 get_sieve_config_backend, (void *)&u );
 880
 881         if (u.config_msgnum < 0) {
 882                 CtdlLogPrintf(CTDL_DEBUG, "No Sieve rules exist.  No processing is required.\n");
 883                 return;
 884         }
 885
 886         CtdlLogPrintf(CTDL_DEBUG, "Rules found.  Performing Sieve processing for <%s>\n", roomname);
 887
 888         if (CtdlGetRoom(&CC->room, roomname) != 0) {
 889                 CtdlLogPrintf(CTDL_CRIT, "ERROR: cannot load <%s>\n", roomname);
 890                 return;
 891         }
 892
 893         /* Initialize the Sieve parser */
 894
 895         res = sieve2_alloc(&sieve2_context);
 896         if (res != SIEVE2_OK) {
 897                 CtdlLogPrintf(CTDL_CRIT, "sieve2_alloc() returned %d: %s\n", res, sieve2_errstr(res));
 898                 return;
 899         }
 900
 901         res = sieve2_callbacks(sieve2_context, ctdl_sieve_callbacks);
 902         if (res != SIEVE2_OK) {
 903                 CtdlLogPrintf(CTDL_CRIT, "sieve2_callbacks() returned %d: %s\n", res, sieve2_errstr(res));
 904                 goto BAIL;
 905         }
 906
 907         /* Validate the script */
 908
 909         struct ctdl_sieve my;           /* dummy ctdl_sieve struct just to pass "u" slong */
 910         memset(&my, 0, sizeof my);
 911         my.u = &u;
 912         res = sieve2_validate(sieve2_context, &my);
 913         if (res != SIEVE2_OK) {
 914                 CtdlLogPrintf(CTDL_CRIT, "sieve2_validate() returned %d: %s\n", res, sieve2_errstr(res));
 915                 goto BAIL;
 916         }
 917
 918         /* Do something useful */
 919         u.sieve2_context = sieve2_context;
 920         orig_lastproc = u.lastproc;
 921         CtdlForEachMessage(MSGS_GT, u.lastproc, NULL, NULL, NULL,
 922                 sieve_do_msg,
 923                 (void *) &u
 924         );
 925
 926 BAIL:
 927         res = sieve2_free(&sieve2_context);
 928         if (res != SIEVE2_OK) {
 929                 CtdlLogPrintf(CTDL_CRIT, "sieve2_free() returned %d: %s\n", res, sieve2_errstr(res));
 930         }
 931
 932         /* Rewrite the config if we have to */
 933         rewrite_ctdl_sieve_config(&u, (u.lastproc > orig_lastproc) ) ;
 934 }
 935
 936
 937 /*
 938  * Perform sieve processing for all rooms which require it
 939  */
 940 void perform_sieve_processing(void) {
 941         struct RoomProcList *ptr = NULL;
 942
 943         if (sieve_list != NULL) {
 944                 CtdlLogPrintf(CTDL_DEBUG, "Begin Sieve processing\n");
 945                 while (sieve_list != NULL) {
 946                         char spoolroomname[ROOMNAMELEN];
 947                         safestrncpy(spoolroomname, sieve_list->name, sizeof spoolroomname);
 948                         begin_critical_section(S_SIEVELIST);
 949
 950                         /* pop this record off the list */
 951                         ptr = sieve_list;
 952                         sieve_list = sieve_list->next;
 953                         free(ptr);
 954
 955                         /* invalidate any duplicate entries to prevent double processing */
 956                         for (ptr=sieve_list; ptr!=NULL; ptr=ptr->next) {
 957                                 if (!strcasecmp(ptr->name, spoolroomname)) {
 958                                         ptr->name[0] = 0;
 959                                 }
 960                         }
 961
 962                         end_critical_section(S_SIEVELIST);
 963                         if (spoolroomname[0] != 0) {
 964                                 sieve_do_room(spoolroomname);
 965                         }
 966                 }
 967         }
 968 }
 969
 970
 971 void msiv_load(struct sdm_userdata *u) {
 972         char hold_rm[ROOMNAMELEN];
 973
 974         strcpy(hold_rm, CC->room.QRname);       /* save current room */
 975
 976         /* Take a spin through the user's personal address book */
 977         if (CtdlGetRoom(&CC->room, USERCONFIGROOM) == 0) {
 978
 979                 u->config_msgnum = (-1);
 980                 strcpy(u->config_roomname, CC->room.QRname);
 981                 CtdlForEachMessage(MSGS_LAST, 1, NULL, SIEVECONFIG, NULL,
 982                         get_sieve_config_backend, (void *)u );
 983
 984         }
 985
 986         if (strcmp(CC->room.QRname, hold_rm)) {
 987                 CtdlGetRoom(&CC->room, hold_rm);    /* return to saved room */
 988         }
 989 }
 990
 991 void msiv_store(struct sdm_userdata *u, int yes_write_to_disk) {
 992 /*
 993  * Initialise the sieve configs last processed message number.
 994  * We don't need to get the highest message number for the users inbox since the systems
 995  * highest message number will be higher than that and loer than this scripts message number
 996  * This prevents this new script from processing any old messages in the inbox.
 997  * Most importantly it will prevent vacation messages being sent to lots of old messages
 998  * in the inbox.
 999  */
1000         u->lastproc = CtdlGetCurrentMessageNumber();
1001         rewrite_ctdl_sieve_config(u, yes_write_to_disk);
1002 }
1003
1004
1005 /*
1006  * Select the active script.
1007  * (Set script_name to an empty string to disable all scripts)
1008  *
1009  * Returns 0 on success or nonzero for error.
1010  */
1011 int msiv_setactive(struct sdm_userdata *u, char *script_name) {
1012         int ok = 0;
1013         struct sdm_script *s;
1014
1015         /* First see if the supplied value is ok */
1016
1017         if (IsEmptyStr(script_name)) {
1018                 ok = 1;
1019         }
1020         else {
1021                 for (s=u->first_script; s!=NULL; s=s->next) {
1022                         if (!strcasecmp(s->script_name, script_name)) {
1023                                 ok = 1;
1024                         }
1025                 }
1026         }
1027
1028         if (!ok) return(-1);
1029
1030         /* Now set the active script */
1031         for (s=u->first_script; s!=NULL; s=s->next) {
1032                 if (!strcasecmp(s->script_name, script_name)) {
1033                         s->script_active = 1;
1034                 }
1035                 else {
1036                         s->script_active = 0;
1037                 }
1038         }
1039
1040         return(0);
1041 }
1042
1043
1044 /*
1045  * Fetch a script by name.
1046  *
1047  * Returns NULL if the named script was not found, or a pointer to the script
1048  * if it was found.   NOTE: the caller does *not* own the memory returned by
1049  * this function.  Copy it if you need to keep it.
1050  */
1051 char *msiv_getscript(struct sdm_userdata *u, char *script_name) {
1052         struct sdm_script *s;
1053
1054         for (s=u->first_script; s!=NULL; s=s->next) {
1055                 if (!strcasecmp(s->script_name, script_name)) {
1056                         if (s->script_content != NULL) {
1057                                 return (s->script_content);
1058                         }
1059                 }
1060         }
1061
1062         return(NULL);
1063 }
1064
1065
1066 /*
1067  * Delete a script by name.
1068  *
1069  * Returns 0 if the script was deleted.
1070  *       1 if the script was not found.
1071  *       2 if the script cannot be deleted because it is active.
1072  */
1073 int msiv_deletescript(struct sdm_userdata *u, char *script_name) {
1074         struct sdm_script *s = NULL;
1075         struct sdm_script *script_to_delete = NULL;
1076
1077         for (s=u->first_script; s!=NULL; s=s->next) {
1078                 if (!strcasecmp(s->script_name, script_name)) {
1079                         script_to_delete = s;
1080                         if (s->script_active) {
1081                                 return(2);
1082                         }
1083                 }
1084         }
1085
1086         if (script_to_delete == NULL) return(1);
1087
1088         if (u->first_script == script_to_delete) {
1089                 u->first_script = u->first_script->next;
1090         }
1091         else for (s=u->first_script; s!=NULL; s=s->next) {
1092                 if (s->next == script_to_delete) {
1093                         s->next = s->next->next;
1094                 }
1095         }
1096
1097         free(script_to_delete->script_content);
1098         free(script_to_delete);
1099         return(0);
1100 }
1101
1102
1103 /*
1104  * Add or replace a new script.
1105  * NOTE: after this function returns, "u" owns the memory that "script_content"
1106  * was pointing to.
1107  */
1108 void msiv_putscript(struct sdm_userdata *u, char *script_name, char *script_content) {
1109         int replaced = 0;
1110         struct sdm_script *s, *sptr;
1111
1112         for (s=u->first_script; s!=NULL; s=s->next) {
1113                 if (!strcasecmp(s->script_name, script_name)) {
1114                         if (s->script_content != NULL) {
1115                                 free(s->script_content);
1116                         }
1117                         s->script_content = script_content;
1118                         replaced = 1;
1119                 }
1120         }
1121
1122         if (replaced == 0) {
1123                 sptr = malloc(sizeof(struct sdm_script));
1124                 safestrncpy(sptr->script_name, script_name, sizeof sptr->script_name);
1125                 sptr->script_content = script_content;
1126                 sptr->script_active = 0;
1127                 sptr->next = u->first_script;
1128                 u->first_script = sptr;
1129         }
1130 }
1131
1132
1133
1134 /*
1135  * Citadel protocol to manage sieve scripts.
1136  * This is basically a simplified (read: doesn't resemble IMAP) version
1137  * of the 'managesieve' protocol.
1138  */
1139 void cmd_msiv(char *argbuf) {
1140         char subcmd[256];
1141         struct sdm_userdata u;
1142         char script_name[256];
1143         char *script_content = NULL;
1144         struct sdm_script *s;
1145         int i;
1146         int changes_made = 0;
1147
1148         memset(&u, 0, sizeof(struct sdm_userdata));
1149
1150         if (CtdlAccessCheck(ac_logged_in)) return;
1151         extract_token(subcmd, argbuf, 0, '|', sizeof subcmd);
1152         msiv_load(&u);
1153
1154         if (!strcasecmp(subcmd, "putscript")) {
1155                 extract_token(script_name, argbuf, 1, '|', sizeof script_name);
1156                 if (!IsEmptyStr(script_name)) {
1157                         cprintf("%d Transmit script now\n", SEND_LISTING);
1158                         script_content = CtdlReadMessageBody(HKEY("000"), config.c_maxmsglen, NULL, 0, 0);
1159                         msiv_putscript(&u, script_name, script_content);
1160                         changes_made = 1;
1161                 }
1162                 else {
1163                         cprintf("%d Invalid script name.\n", ERROR + ILLEGAL_VALUE);
1164                 }
1165         }
1166
1167         else if (!strcasecmp(subcmd, "listscripts")) {
1168                 cprintf("%d Scripts:\n", LISTING_FOLLOWS);
1169                 for (s=u.first_script; s!=NULL; s=s->next) {
1170                         if (s->script_content != NULL) {
1171                                 cprintf("%s|%d|\n", s->script_name, s->script_active);
1172                         }
1173                 }
1174                 cprintf("000\n");
1175         }
1176
1177         else if (!strcasecmp(subcmd, "setactive")) {
1178                 extract_token(script_name, argbuf, 1, '|', sizeof script_name);
1179                 if (msiv_setactive(&u, script_name) == 0) {
1180                         cprintf("%d ok\n", CIT_OK);
1181                         changes_made = 1;
1182                 }
1183                 else {
1184                         cprintf("%d Script '%s' does not exist.\n",
1185                                 ERROR + ILLEGAL_VALUE,
1186                                 script_name
1187                         );
1188                 }
1189         }
1190
1191         else if (!strcasecmp(subcmd, "getscript")) {
1192                 extract_token(script_name, argbuf, 1, '|', sizeof script_name);
1193                 script_content = msiv_getscript(&u, script_name);
1194                 if (script_content != NULL) {
1195                         int script_len;
1196
1197                         cprintf("%d Script:\n", LISTING_FOLLOWS);
1198                         script_len = strlen(script_content);
1199                         client_write(script_content, script_len);
1200                         if (script_content[script_len-1] != '\n') {
1201                                 cprintf("\n");
1202                         }
1203                         cprintf("000\n");
1204                 }
1205                 else {
1206                         cprintf("%d Invalid script name.\n", ERROR + ILLEGAL_VALUE);
1207                 }
1208         }
1209
1210         else if (!strcasecmp(subcmd, "deletescript")) {
1211                 extract_token(script_name, argbuf, 1, '|', sizeof script_name);
1212                 i = msiv_deletescript(&u, script_name);
1213                 if (i == 0) {
1214                         cprintf("%d ok\n", CIT_OK);
1215                         changes_made = 1;
1216                 }
1217                 else if (i == 1) {
1218                         cprintf("%d Script '%s' does not exist.\n",
1219                                 ERROR + ILLEGAL_VALUE,
1220                                 script_name
1221                         );
1222                 }
1223                 else if (i == 2) {
1224                         cprintf("%d Script '%s' is active and cannot be deleted.\n",
1225                                 ERROR + ILLEGAL_VALUE,
1226                                 script_name
1227                         );
1228                 }
1229                 else {
1230                         cprintf("%d unknown error\n", ERROR);
1231                 }
1232         }
1233
1234         else {
1235                 cprintf("%d Invalid subcommand\n", ERROR + CMD_NOT_SUPPORTED);
1236         }
1237
1238         msiv_store(&u, changes_made);
1239 }
1240
1241
1242
1243 void ctdl_sieve_init(void) {
1244         char *cred = NULL;
1245         sieve2_context_t *sieve2_context = NULL;
1246         int res;
1247
1248         /*
1249          *      We don't really care about dumping the entire credits to the log
1250          *      every time the server is initialized.  The documentation will suffice
1251          *      for that purpose.  We are making a call to sieve2_credits() in order
1252          *      to demonstrate that we have successfully linked in to libsieve.
1253          */
1254         cred = strdup(sieve2_credits());
1255         if (cred == NULL) return;
1256
1257         if (strlen(cred) > 60) {
1258                 strcpy(&cred[55], "...");
1259         }
1260
1261         CtdlLogPrintf(CTDL_INFO, "%s\n",cred);
1262         free(cred);
1263
1264         /* Briefly initialize a Sieve parser instance just so we can list the
1265          * extensions that are available.
1266          */
1267         res = sieve2_alloc(&sieve2_context);
1268         if (res != SIEVE2_OK) {
1269                 CtdlLogPrintf(CTDL_CRIT, "sieve2_alloc() returned %d: %s\n", res, sieve2_errstr(res));
1270                 return;
1271         }
1272
1273         res = sieve2_callbacks(sieve2_context, ctdl_sieve_callbacks);
1274         if (res != SIEVE2_OK) {
1275                 CtdlLogPrintf(CTDL_CRIT, "sieve2_callbacks() returned %d: %s\n", res, sieve2_errstr(res));
1276                 goto BAIL;
1277         }
1278
1279         msiv_extensions = strdup(sieve2_listextensions(sieve2_context));
1280         CtdlLogPrintf(CTDL_INFO, "Extensions: %s\n", msiv_extensions);
1281
1282 BAIL:   res = sieve2_free(&sieve2_context);
1283         if (res != SIEVE2_OK) {
1284                 CtdlLogPrintf(CTDL_CRIT, "sieve2_free() returned %d: %s\n", res, sieve2_errstr(res));
1285         }
1286
1287 }
1288
1289 int serv_sieve_room(struct ctdlroom *room)
1290 {
1291         if (!strcasecmp(&room->QRname[11], MAILROOM)) {
1292                 sieve_queue_room(room);
1293         }
1294         return 0;
1295 }
1296
1297 CTDL_MODULE_INIT(sieve)
1298 {
1299         if (!threading)
1300         {
1301
1302                 ctdl_sieve_init();
1303                 CtdlRegisterProtoHook(cmd_msiv, "MSIV", "Manage Sieve scripts");
1304                 CtdlRegisterRoomHook(serv_sieve_room);
1305                 CtdlRegisterSessionHook(perform_sieve_processing, EVT_HOUSE);
1306         }
1307
1308         /* return our Subversion id for the Log */
1309         return "$Id$";
1310 }
1311