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 "policy.h"
  55 #include "database.h"
  56 #include "msgbase.h"
  57 #include "internet_addressing.h"
  58 #include "ctdl_module.h"
  59 #include "serv_sieve.h"
  60
  61 struct RoomProcList *sieve_list = NULL;
  62 char *msiv_extensions = NULL;
  63
  64
  65 /*
  66  * Callback function to send libSieve trace messages to Citadel log facility
  67  */
  68 int ctdl_debug(sieve2_context_t *s, void *my)
  69 {
  70         CtdlLogPrintf(CTDL_DEBUG, "Sieve: %s\n", sieve2_getvalue_string(s, "message"));
  71         return SIEVE2_OK;
  72 }
  73
  74
  75 /*
  76  * Callback function to log script parsing errors
  77  */
  78 int ctdl_errparse(sieve2_context_t *s, void *my)
  79 {
  80         CtdlLogPrintf(CTDL_WARNING, "Error in script, line %d: %s\n",
  81                 sieve2_getvalue_int(s, "lineno"),
  82                 sieve2_getvalue_string(s, "message")
  83         );
  84         return SIEVE2_OK;
  85 }
  86
  87
  88 /*
  89  * Callback function to log script execution errors
  90  */
  91 int ctdl_errexec(sieve2_context_t *s, void *my)
  92 {
  93         CtdlLogPrintf(CTDL_WARNING, "Error executing script: %s\n",
  94                 sieve2_getvalue_string(s, "message")
  95         );
  96         return SIEVE2_OK;
  97 }
  98
  99
 100 /*
 101  * Callback function to redirect a message to a different folder
 102  */
 103 int ctdl_redirect(sieve2_context_t *s, void *my)
 104 {
 105         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 106         struct CtdlMessage *msg = NULL;
 107         struct recptypes *valid = NULL;
 108         char recp[256];
 109
 110         safestrncpy(recp, sieve2_getvalue_string(s, "address"), sizeof recp);
 111
 112         CtdlLogPrintf(CTDL_DEBUG, "Action is REDIRECT, recipient <%s>\n", recp);
 113
 114         valid = validate_recipients(recp, NULL, 0);
 115         if (valid == NULL) {
 116                 CtdlLogPrintf(CTDL_WARNING, "REDIRECT failed: bad recipient <%s>\n", recp);
 117                 return SIEVE2_ERROR_BADARGS;
 118         }
 119         if (valid->num_error > 0) {
 120                 CtdlLogPrintf(CTDL_WARNING, "REDIRECT failed: bad recipient <%s>\n", recp);
 121                 free_recipients(valid);
 122                 return SIEVE2_ERROR_BADARGS;
 123         }
 124
 125         msg = CtdlFetchMessage(cs->msgnum, 1);
 126         if (msg == NULL) {
 127                 CtdlLogPrintf(CTDL_WARNING, "REDIRECT failed: unable to fetch msg %ld\n", cs->msgnum);
 128                 free_recipients(valid);
 129                 return SIEVE2_ERROR_BADARGS;
 130         }
 131
 132         CtdlSubmitMsg(msg, valid, NULL, 0);
 133         cs->cancel_implicit_keep = 1;
 134         free_recipients(valid);
 135         CtdlFreeMessage(msg);
 136         return SIEVE2_OK;
 137 }
 138
 139
 140 /*
 141  * Callback function to indicate that a message *will* be kept in the inbox
 142  */
 143 int ctdl_keep(sieve2_context_t *s, void *my)
 144 {
 145         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 146
 147         CtdlLogPrintf(CTDL_DEBUG, "Action is KEEP\n");
 148
 149         cs->keep = 1;
 150         cs->cancel_implicit_keep = 1;
 151         return SIEVE2_OK;
 152 }
 153
 154
 155 /*
 156  * Callback function to file a message into a different mailbox
 157  */
 158 int ctdl_fileinto(sieve2_context_t *s, void *my)
 159 {
 160         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 161         const char *dest_folder = sieve2_getvalue_string(s, "mailbox");
 162         int c;
 163         char foldername[256];
 164         char original_room_name[ROOMNAMELEN];
 165
 166         CtdlLogPrintf(CTDL_DEBUG, "Action is FILEINTO, destination is <%s>\n", dest_folder);
 167
 168         /* FILEINTO 'INBOX' is the same thing as KEEP */
 169         if ( (!strcasecmp(dest_folder, "INBOX")) || (!strcasecmp(dest_folder, MAILROOM)) ) {
 170                 cs->keep = 1;
 171                 cs->cancel_implicit_keep = 1;
 172                 return SIEVE2_OK;
 173         }
 174
 175         /* Remember what room we came from */
 176         safestrncpy(original_room_name, CC->room.QRname, sizeof original_room_name);
 177
 178         /* First try a mailbox name match (check personal mail folders first) */
 179         snprintf(foldername, sizeof foldername, "%010ld.%s", cs->usernum, dest_folder);
 180         c = CtdlGetRoom(&CC->room, foldername);
 181
 182         /* Then a regular room name match (public and private rooms) */
 183         if (c != 0) {
 184                 safestrncpy(foldername, dest_folder, sizeof foldername);
 185                 c = CtdlGetRoom(&CC->room, foldername);
 186         }
 187
 188         if (c != 0) {
 189                 CtdlLogPrintf(CTDL_WARNING, "FILEINTO failed: target <%s> does not exist\n", dest_folder);
 190                 return SIEVE2_ERROR_BADARGS;
 191         }
 192
 193         /* Yes, we actually have to go there */
 194         CtdlUserGoto(NULL, 0, 0, NULL, NULL);
 195
 196         c = CtdlSaveMsgPointersInRoom(NULL, &cs->msgnum, 1, 0, NULL, 0);
 197
 198         /* Go back to the room we came from */
 199         if (strcasecmp(original_room_name, CC->room.QRname)) {
 200                 CtdlUserGoto(original_room_name, 0, 0, NULL, NULL);
 201         }
 202
 203         if (c == 0) {
 204                 cs->cancel_implicit_keep = 1;
 205                 return SIEVE2_OK;
 206         }
 207         else {
 208                 return SIEVE2_ERROR_BADARGS;
 209         }
 210 }
 211
 212
 213 /*
 214  * Callback function to indicate that a message should be discarded.
 215  */
 216 int ctdl_discard(sieve2_context_t *s, void *my)
 217 {
 218         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 219
 220         CtdlLogPrintf(CTDL_DEBUG, "Action is DISCARD\n");
 221
 222         /* Cancel the implicit keep.  That's all there is to it. */
 223         cs->cancel_implicit_keep = 1;
 224         return SIEVE2_OK;
 225 }
 226
 227
 228
 229 /*
 230  * Callback function to indicate that a message should be rejected
 231  */
 232 int ctdl_reject(sieve2_context_t *s, void *my)
 233 {
 234         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 235         char *reject_text = NULL;
 236
 237         CtdlLogPrintf(CTDL_DEBUG, "Action is REJECT\n");
 238
 239         /* If we don't know who sent the message, do a DISCARD instead. */
 240         if (IsEmptyStr(cs->sender)) {
 241                 CtdlLogPrintf(CTDL_INFO, "Unknown sender.  Doing DISCARD instead of REJECT.\n");
 242                 return ctdl_discard(s, my);
 243         }
 244
 245         /* Assemble the reject message. */
 246         reject_text = malloc(strlen(sieve2_getvalue_string(s, "message")) + 1024);
 247         if (reject_text == NULL) {
 248                 return SIEVE2_ERROR_FAIL;
 249         }
 250
 251         sprintf(reject_text,
 252                 "Content-type: text/plain\n"
 253                 "\n"
 254                 "The message was refused by the recipient's mail filtering program.\n"
 255                 "The reason given was as follows:\n"
 256                 "\n"
 257                 "%s\n"
 258                 "\n"
 259         ,
 260                 sieve2_getvalue_string(s, "message")
 261         );
 262
 263         quickie_message(        /* This delivers the message */
 264                 NULL,
 265                 cs->envelope_to,
 266                 cs->sender,
 267                 NULL,
 268                 reject_text,
 269                 FMT_RFC822,
 270                 "Delivery status notification"
 271         );
 272
 273         free(reject_text);
 274         cs->cancel_implicit_keep = 1;
 275         return SIEVE2_OK;
 276 }
 277
 278
 279
 280 /*
 281  * Callback function to indicate that a vacation message should be generated
 282  */
 283 int ctdl_vacation(sieve2_context_t *s, void *my)
 284 {
 285         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 286         struct sdm_vacation *vptr;
 287         int days = 1;
 288         const char *message;
 289         char *vacamsg_text = NULL;
 290         char vacamsg_subject[1024];
 291
 292         CtdlLogPrintf(CTDL_DEBUG, "Action is VACATION\n");
 293
 294         message = sieve2_getvalue_string(s, "message");
 295         if (message == NULL) return SIEVE2_ERROR_BADARGS;
 296
 297         if (sieve2_getvalue_string(s, "subject") != NULL) {
 298                 safestrncpy(vacamsg_subject, sieve2_getvalue_string(s, "subject"), sizeof vacamsg_subject);
 299         }
 300         else {
 301                 snprintf(vacamsg_subject, sizeof vacamsg_subject, "Re: %s", cs->subject);
 302         }
 303
 304         days = sieve2_getvalue_int(s, "days");
 305         if (days < 1) days = 1;
 306         if (days > MAX_VACATION) days = MAX_VACATION;
 307
 308         /* Check to see whether we've already alerted this sender that we're on vacation. */
 309         for (vptr = cs->u->first_vacation; vptr != NULL; vptr = vptr->next) {
 310                 if (!strcasecmp(vptr->fromaddr, cs->sender)) {
 311                         if ( (time(NULL) - vptr->timestamp) < (days * 86400) ) {
 312                                 CtdlLogPrintf(CTDL_DEBUG, "Already alerted <%s> recently.\n", cs->sender);
 313                                 return SIEVE2_OK;
 314                         }
 315                 }
 316         }
 317
 318         /* Assemble the reject message. */
 319         vacamsg_text = malloc(strlen(message) + 1024);
 320         if (vacamsg_text == NULL) {
 321                 return SIEVE2_ERROR_FAIL;
 322         }
 323
 324         sprintf(vacamsg_text,
 325                 "Content-type: text/plain charset=utf-8\n"
 326                 "\n"
 327                 "%s\n"
 328                 "\n"
 329         ,
 330                 message
 331         );
 332
 333         quickie_message(        /* This delivers the message */
 334                 NULL,
 335                 cs->envelope_to,
 336                 cs->sender,
 337                 NULL,
 338                 vacamsg_text,
 339                 FMT_RFC822,
 340                 vacamsg_subject
 341         );
 342
 343         free(vacamsg_text);
 344
 345         /* Now update the list to reflect the fact that we've alerted this sender.
 346          * If they're already in the list, just update the timestamp.
 347          */
 348         for (vptr = cs->u->first_vacation; vptr != NULL; vptr = vptr->next) {
 349                 if (!strcasecmp(vptr->fromaddr, cs->sender)) {
 350                         vptr->timestamp = time(NULL);
 351                         return SIEVE2_OK;
 352                 }
 353         }
 354
 355         /* If we get to this point, create a new record.
 356          */
 357         vptr = malloc(sizeof(struct sdm_vacation));
 358         memset(vptr, 0, sizeof(struct sdm_vacation));
 359         vptr->timestamp = time(NULL);
 360         safestrncpy(vptr->fromaddr, cs->sender, sizeof vptr->fromaddr);
 361         vptr->next = cs->u->first_vacation;
 362         cs->u->first_vacation = vptr;
 363
 364         return SIEVE2_OK;
 365 }
 366
 367
 368 /*
 369  * Callback function to parse addresses per local system convention
 370  * It is disabled because we don't support subaddresses.
 371  */
 372 #if 0
 373 int ctdl_getsubaddress(sieve2_context_t *s, void *my)
 374 {
 375         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 376
 377         /* libSieve does not take ownership of the memory used here.  But, since we
 378          * are just pointing to locations inside a struct which we are going to free
 379          * later, we're ok.
 380          */
 381         sieve2_setvalue_string(s, "user", cs->recp_user);
 382         sieve2_setvalue_string(s, "detail", "");
 383         sieve2_setvalue_string(s, "localpart", cs->recp_user);
 384         sieve2_setvalue_string(s, "domain", cs->recp_node);
 385         return SIEVE2_OK;
 386 }
 387 #endif
 388
 389
 390 /*
 391  * Callback function to parse message envelope
 392  */
 393 int ctdl_getenvelope(sieve2_context_t *s, void *my)
 394 {
 395         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 396
 397         CtdlLogPrintf(CTDL_DEBUG, "Action is GETENVELOPE\nEnvFrom: %s\n  EnvTo: %s\n",
 398                 cs->envelope_from, cs->envelope_to);
 399
 400         if (cs->envelope_from != NULL) {
 401                 if ((cs->envelope_from[0] != '@')&&(cs->envelope_from[strlen(cs->envelope_from)-1] != '@')) {
 402                         sieve2_setvalue_string(s, "from", cs->envelope_from);
 403                 }
 404                 else {
 405                         sieve2_setvalue_string(s, "from", "invalid_envelope_from@example.org");
 406                 }
 407         }
 408         else {
 409                 sieve2_setvalue_string(s, "from", "null_envelope_from@example.org");
 410         }
 411
 412
 413         if (cs->envelope_to != NULL) {
 414                 if ((cs->envelope_to[0] != '@') && (cs->envelope_to[strlen(cs->envelope_to)-1] != '@')) {
 415                         sieve2_setvalue_string(s, "to", cs->envelope_to);
 416                 }
 417                 else {
 418                         sieve2_setvalue_string(s, "to", "invalid_envelope_to@example.org");
 419                 }
 420         }
 421         else {
 422                 sieve2_setvalue_string(s, "to", "null_envelope_to@example.org");
 423         }
 424
 425         return SIEVE2_OK;
 426 }
 427
 428
 429 /*
 430  * Callback function to fetch message body
 431  * (Uncomment the code if we implement this extension)
 432  *
 433 int ctdl_getbody(sieve2_context_t *s, void *my)
 434 {
 435         return SIEVE2_ERROR_UNSUPPORTED;
 436 }
 437  *
 438  */
 439
 440
 441 /*
 442  * Callback function to fetch message size
 443  */
 444 int ctdl_getsize(sieve2_context_t *s, void *my)
 445 {
 446         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 447         struct MetaData smi;
 448
 449         GetMetaData(&smi, cs->msgnum);
 450
 451         if (smi.meta_rfc822_length > 0L) {
 452                 sieve2_setvalue_int(s, "size", (int)smi.meta_rfc822_length);
 453                 return SIEVE2_OK;
 454         }
 455
 456         return SIEVE2_ERROR_UNSUPPORTED;
 457 }
 458
 459
 460 /*
 461  * Callback function to retrieve the sieve script
 462  */
 463 int ctdl_getscript(sieve2_context_t *s, void *my) {
 464         struct sdm_script *sptr;
 465         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 466
 467         for (sptr=cs->u->first_script; sptr!=NULL; sptr=sptr->next) {
 468                 if (sptr->script_active > 0) {
 469                         CtdlLogPrintf(CTDL_DEBUG, "ctdl_getscript() is using script '%s'\n", sptr->script_name);
 470                         sieve2_setvalue_string(s, "script", sptr->script_content);
 471                         return SIEVE2_OK;
 472                 }
 473         }
 474
 475         CtdlLogPrintf(CTDL_DEBUG, "ctdl_getscript() found no active script\n");
 476         return SIEVE2_ERROR_GETSCRIPT;
 477 }
 478
 479 /*
 480  * Callback function to retrieve message headers
 481  */
 482 int ctdl_getheaders(sieve2_context_t *s, void *my) {
 483
 484         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 485
 486         CtdlLogPrintf(CTDL_DEBUG, "ctdl_getheaders() was called\n");
 487         sieve2_setvalue_string(s, "allheaders", cs->rfc822headers);
 488         return SIEVE2_OK;
 489 }
 490
 491
 492
 493 /*
 494  * Add a room to the list of those rooms which potentially require sieve processing
 495  */
 496 void sieve_queue_room(struct ctdlroom *which_room) {
 497         struct RoomProcList *ptr;
 498
 499         ptr = (struct RoomProcList *) malloc(sizeof (struct RoomProcList));
 500         if (ptr == NULL) return;
 501
 502         safestrncpy(ptr->name, which_room->QRname, sizeof ptr->name);
 503         begin_critical_section(S_SIEVELIST);
 504         ptr->next = sieve_list;
 505         sieve_list = ptr;
 506         end_critical_section(S_SIEVELIST);
 507         CtdlLogPrintf(CTDL_DEBUG, "<%s> queued for Sieve processing\n", which_room->QRname);
 508 }
 509
 510
 511
 512 /*
 513  * Perform sieve processing for one message (called by sieve_do_room() for each message)
 514  */
 515 void sieve_do_msg(long msgnum, void *userdata) {
 516         struct sdm_userdata *u = (struct sdm_userdata *) userdata;
 517         sieve2_context_t *sieve2_context;
 518         struct ctdl_sieve my;
 519         int res;
 520         struct CtdlMessage *msg;
 521         int i;
 522         size_t headers_len = 0;
 523         int len = 0;
 524
 525         if (u == NULL)
 526         {
 527                 CtdlLogPrintf(CTDL_EMERG, "Can't process message <%ld> without userdata!\n", msgnum);
 528                 return;
 529         }
 530
 531         sieve2_context = u->sieve2_context;
 532
 533         CtdlLogPrintf(CTDL_DEBUG, "Performing sieve processing on msg <%ld>\n", msgnum);
 534
 535         /*
 536          * Make sure you include message body so you can get those second-level headers ;)
 537          */
 538         msg = CtdlFetchMessage(msgnum, 1);
 539         if (msg == NULL) return;
 540
 541         /*
 542          * Grab the message headers so we can feed them to libSieve.
 543          * Use HEADERS_ONLY rather than HEADERS_FAST in order to include second-level headers.
 544          */
 545         CC->redirect_buffer = NewStrBufPlain(NULL, SIZ);
 546         CtdlOutputPreLoadedMsg(msg, MT_RFC822, HEADERS_ONLY, 0, 1, 0);
 547         headers_len = StrLength(CC->redirect_buffer);
 548         my.rfc822headers = SmashStrBuf(&CC->redirect_buffer);
 549
 550         /*
 551          * libSieve clobbers the stack if it encounters badly formed
 552          * headers.  Sanitize our headers by stripping nonprintable
 553          * characters.
 554          */
 555         for (i=0; i<headers_len; ++i) {
 556                 if (!isascii(my.rfc822headers[i])) {
 557                         my.rfc822headers[i] = '_';
 558                 }
 559         }
 560
 561         my.keep = 0;                            /* Set to 1 to declare an *explicit* keep */
 562         my.cancel_implicit_keep = 0;            /* Some actions will cancel the implicit keep */
 563         my.usernum = atol(CC->room.QRname);     /* Keep track of the owner of the room's namespace */
 564         my.msgnum = msgnum;                     /* Keep track of the message number in our local store */
 565         my.u = u;                               /* Hand off a pointer to the rest of this info */
 566
 567         /* Keep track of the recipient so we can do handling based on it later */
 568         process_rfc822_addr(msg->cm_fields['R'], my.recp_user, my.recp_node, my.recp_name);
 569
 570         /* Keep track of the sender so we can use it for REJECT and VACATION responses */
 571         if (msg->cm_fields['F'] != NULL) {
 572                 safestrncpy(my.sender, msg->cm_fields['F'], sizeof my.sender);
 573         }
 574         else if ( (msg->cm_fields['A'] != NULL) && (msg->cm_fields['N'] != NULL) ) {
 575                 snprintf(my.sender, sizeof my.sender, "%s@%s", msg->cm_fields['A'], msg->cm_fields['N']);
 576         }
 577         else if (msg->cm_fields['A'] != NULL) {
 578                 safestrncpy(my.sender, msg->cm_fields['A'], sizeof my.sender);
 579         }
 580         else {
 581                 strcpy(my.sender, "");
 582         }
 583
 584         /* Keep track of the subject so we can use it for VACATION responses */
 585         if (msg->cm_fields['U'] != NULL) {
 586                 safestrncpy(my.subject, msg->cm_fields['U'], sizeof my.subject);
 587         }
 588         else {
 589                 strcpy(my.subject, "");
 590         }
 591
 592         /* Keep track of the envelope-from address (use body-from if not found) */
 593         if (msg->cm_fields['P'] != NULL) {
 594                 safestrncpy(my.envelope_from, msg->cm_fields['P'], sizeof my.envelope_from);
 595                 stripallbut(my.envelope_from, '<', '>');
 596         }
 597         else if (msg->cm_fields['F'] != NULL) {
 598                 safestrncpy(my.envelope_from, msg->cm_fields['F'], sizeof my.envelope_from);
 599                 stripallbut(my.envelope_from, '<', '>');
 600         }
 601         else {
 602                 strcpy(my.envelope_from, "");
 603         }
 604
 605         len = strlen(my.envelope_from);
 606         for (i=0; i<len; ++i) {
 607                 if (isspace(my.envelope_from[i])) my.envelope_from[i] = '_';
 608         }
 609         if (haschar(my.envelope_from, '@') == 0) {
 610                 strcat(my.envelope_from, "@");
 611                 strcat(my.envelope_from, config.c_fqdn);
 612         }
 613
 614         /* Keep track of the envelope-to address (use body-to if not found) */
 615         if (msg->cm_fields['V'] != NULL) {
 616                 safestrncpy(my.envelope_to, msg->cm_fields['V'], sizeof my.envelope_to);
 617                 stripallbut(my.envelope_to, '<', '>');
 618         }
 619         else if (msg->cm_fields['R'] != NULL) {
 620                 safestrncpy(my.envelope_to, msg->cm_fields['R'], sizeof my.envelope_to);
 621                 if (msg->cm_fields['D'] != NULL) {
 622                         strcat(my.envelope_to, "@");
 623                         strcat(my.envelope_to, msg->cm_fields['D']);
 624                 }
 625                 stripallbut(my.envelope_to, '<', '>');
 626         }
 627         else {
 628                 strcpy(my.envelope_to, "");
 629         }
 630
 631         len = strlen(my.envelope_to);
 632         for (i=0; i<len; ++i) {
 633                 if (isspace(my.envelope_to[i])) my.envelope_to[i] = '_';
 634         }
 635         if (haschar(my.envelope_to, '@') == 0) {
 636                 strcat(my.envelope_to, "@");
 637                 strcat(my.envelope_to, config.c_fqdn);
 638         }
 639
 640         CtdlFreeMessage(msg);
 641
 642         sieve2_setvalue_string(sieve2_context, "allheaders", my.rfc822headers);
 643
 644         CtdlLogPrintf(CTDL_DEBUG, "Calling sieve2_execute()\n");
 645         res = sieve2_execute(sieve2_context, &my);
 646         if (res != SIEVE2_OK) {
 647                 CtdlLogPrintf(CTDL_CRIT, "sieve2_execute() returned %d: %s\n", res, sieve2_errstr(res));
 648         }
 649
 650         free(my.rfc822headers);
 651         my.rfc822headers = NULL;
 652
 653         /*
 654          * Delete the message from the inbox unless either we were told not to, or
 655          * if no other action was successfully taken.
 656          */
 657         if ( (!my.keep) && (my.cancel_implicit_keep) ) {
 658                 CtdlLogPrintf(CTDL_DEBUG, "keep is 0 -- deleting message from inbox\n");
 659                 CtdlDeleteMessages(CC->room.QRname, &msgnum, 1, "");
 660         }
 661
 662         CtdlLogPrintf(CTDL_DEBUG, "Completed sieve processing on msg <%ld>\n", msgnum);
 663         u->lastproc = msgnum;
 664
 665         return;
 666 }
 667
 668
 669
 670 /*
 671  * Given the on-disk representation of our Sieve config, load
 672  * it into an in-memory data structure.
 673  */
 674 void parse_sieve_config(char *conf, struct sdm_userdata *u) {
 675         char *ptr;
 676         char *c, *vacrec;
 677         char keyword[256];
 678         struct sdm_script *sptr;
 679         struct sdm_vacation *vptr;
 680
 681         ptr = conf;
 682         while (c = ptr, ptr = bmstrcasestr(ptr, CTDLSIEVECONFIGSEPARATOR), ptr != NULL) {
 683                 *ptr = 0;
 684                 ptr += strlen(CTDLSIEVECONFIGSEPARATOR);
 685
 686                 extract_token(keyword, c, 0, '|', sizeof keyword);
 687
 688                 if (!strcasecmp(keyword, "lastproc")) {
 689                         u->lastproc = extract_long(c, 1);
 690                 }
 691
 692                 else if (!strcasecmp(keyword, "script")) {
 693                         sptr = malloc(sizeof(struct sdm_script));
 694                         extract_token(sptr->script_name, c, 1, '|', sizeof sptr->script_name);
 695                         sptr->script_active = extract_int(c, 2);
 696                         remove_token(c, 0, '|');
 697                         remove_token(c, 0, '|');
 698                         remove_token(c, 0, '|');
 699                         sptr->script_content = strdup(c);
 700                         sptr->next = u->first_script;
 701                         u->first_script = sptr;
 702                 }
 703
 704                 else if (!strcasecmp(keyword, "vacation")) {
 705
 706                         if (c != NULL) while (vacrec=c, c=strchr(c, '\n'), (c != NULL)) {
 707
 708                                 *c = 0;
 709                                 ++c;
 710
 711                                 if (strncasecmp(vacrec, "vacation|", 9)) {
 712                                         vptr = malloc(sizeof(struct sdm_vacation));
 713                                         extract_token(vptr->fromaddr, vacrec, 0, '|', sizeof vptr->fromaddr);
 714                                         vptr->timestamp = extract_long(vacrec, 1);
 715                                         vptr->next = u->first_vacation;
 716                                         u->first_vacation = vptr;
 717                                 }
 718                         }
 719                 }
 720
 721                 /* ignore unknown keywords */
 722         }
 723 }
 724
 725 /*
 726  * We found the Sieve configuration for this user.
 727  * Now do something with it.
 728  */
 729 void get_sieve_config_backend(long msgnum, void *userdata) {
 730         struct sdm_userdata *u = (struct sdm_userdata *) userdata;
 731         struct CtdlMessage *msg;
 732         char *conf;
 733
 734         u->config_msgnum = msgnum;
 735         msg = CtdlFetchMessage(msgnum, 1);
 736         if (msg == NULL) {
 737                 u->config_msgnum = (-1) ;
 738                 return;
 739         }
 740
 741         conf = msg->cm_fields['M'];
 742         msg->cm_fields['M'] = NULL;
 743         CtdlFreeMessage(msg);
 744
 745         if (conf != NULL) {
 746                 parse_sieve_config(conf, u);
 747                 free(conf);
 748         }
 749
 750 }
 751
 752
 753 /*
 754  * Write our citadel sieve config back to disk
 755  *
 756  * (Set yes_write_to_disk to nonzero to make it actually write the config;
 757  * otherwise it just frees the data structures.)
 758  */
 759 void rewrite_ctdl_sieve_config(struct sdm_userdata *u, int yes_write_to_disk) {
 760         StrBuf *text;
 761         struct sdm_script *sptr;
 762         struct sdm_vacation *vptr;
 763
 764         text = NewStrBufPlain(NULL, SIZ);
 765         StrBufPrintf(text,
 766                      "Content-type: application/x-citadel-sieve-config\n"
 767                      "\n"
 768                      CTDLSIEVECONFIGSEPARATOR
 769                      "lastproc|%ld"
 770                      CTDLSIEVECONFIGSEPARATOR
 771                      ,
 772                      u->lastproc
 773                 );
 774
 775         while (u->first_script != NULL) {
 776                 StrBufAppendPrintf(text,
 777                                    "script|%s|%d|%s" CTDLSIEVECONFIGSEPARATOR,
 778                                    u->first_script->script_name,
 779                                    u->first_script->script_active,
 780                                    u->first_script->script_content
 781                         );
 782                 sptr = u->first_script;
 783                 u->first_script = u->first_script->next;
 784                 free(sptr->script_content);
 785                 free(sptr);
 786         }
 787
 788         if (u->first_vacation != NULL) {
 789
 790                 StrBufAppendPrintf(text, "vacation|\n");
 791                 while (u->first_vacation != NULL) {
 792                         if ( (time(NULL) - u->first_vacation->timestamp) < (MAX_VACATION * 86400)) {
 793                                 StrBufAppendPrintf(text, "%s|%ld\n",
 794                                                    u->first_vacation->fromaddr,
 795                                                    u->first_vacation->timestamp
 796                                         );
 797                         }
 798                         vptr = u->first_vacation;
 799                         u->first_vacation = u->first_vacation->next;
 800                         free(vptr);
 801                 }
 802                 StrBufAppendPrintf(text, CTDLSIEVECONFIGSEPARATOR);
 803         }
 804
 805         if (yes_write_to_disk)
 806         {
 807                 /* Save the config */
 808                 quickie_message("Citadel", NULL, NULL, u->config_roomname,
 809                                 ChrPtr(text),
 810                                 4,
 811                                 "Sieve configuration"
 812                 );
 813
 814                 /* And delete the old one */
 815                 if (u->config_msgnum > 0) {
 816                         CtdlDeleteMessages(u->config_roomname, &u->config_msgnum, 1, "");
 817                 }
 818         }
 819
 820         FreeStrBuf (&text);
 821
 822 }
 823
 824
 825 /*
 826  * This is our callback registration table for libSieve.
 827  */
 828 sieve2_callback_t ctdl_sieve_callbacks[] = {
 829         { SIEVE2_ACTION_REJECT,         ctdl_reject             },
 830         { SIEVE2_ACTION_VACATION,       ctdl_vacation           },
 831         { SIEVE2_ERRCALL_PARSE,         ctdl_errparse           },
 832         { SIEVE2_ERRCALL_RUNTIME,       ctdl_errexec            },
 833         { SIEVE2_ACTION_FILEINTO,       ctdl_fileinto           },
 834         { SIEVE2_ACTION_REDIRECT,       ctdl_redirect           },
 835         { SIEVE2_ACTION_DISCARD,        ctdl_discard            },
 836         { SIEVE2_ACTION_KEEP,           ctdl_keep               },
 837         { SIEVE2_SCRIPT_GETSCRIPT,      ctdl_getscript          },
 838         { SIEVE2_DEBUG_TRACE,           ctdl_debug              },
 839         { SIEVE2_MESSAGE_GETALLHEADERS, ctdl_getheaders         },
 840         { SIEVE2_MESSAGE_GETSIZE,       ctdl_getsize            },
 841         { SIEVE2_MESSAGE_GETENVELOPE,   ctdl_getenvelope        },
 842 /*
 843  * These actions are unsupported by Citadel so we don't declare them.
 844  *
 845         { SIEVE2_ACTION_NOTIFY,         ctdl_notify             },
 846         { SIEVE2_MESSAGE_GETSUBADDRESS, ctdl_getsubaddress      },
 847         { SIEVE2_MESSAGE_GETBODY,       ctdl_getbody            },
 848  *
 849  */
 850         { 0 }
 851 };
 852
 853
 854 /*
 855  * Perform sieve processing for a single room
 856  */
 857 void sieve_do_room(char *roomname) {
 858
 859         struct sdm_userdata u;
 860         sieve2_context_t *sieve2_context = NULL;        /* Context for sieve parser */
 861         int res;                                        /* Return code from libsieve calls */
 862         long orig_lastproc = 0;
 863
 864         memset(&u, 0, sizeof u);
 865
 866         /* See if the user who owns this 'mailbox' has any Sieve scripts that
 867          * require execution.
 868          */
 869         snprintf(u.config_roomname, sizeof u.config_roomname, "%010ld.%s", atol(roomname), USERCONFIGROOM);
 870         if (CtdlGetRoom(&CC->room, u.config_roomname) != 0) {
 871                 CtdlLogPrintf(CTDL_DEBUG, "<%s> does not exist.  No processing is required.\n", u.config_roomname);
 872                 return;
 873         }
 874
 875         /*
 876          * Find the sieve scripts and control record and do something
 877          */
 878         u.config_msgnum = (-1);
 879         CtdlForEachMessage(MSGS_LAST, 1, NULL, SIEVECONFIG, NULL,
 880                 get_sieve_config_backend, (void *)&u );
 881
 882         if (u.config_msgnum < 0) {
 883                 CtdlLogPrintf(CTDL_DEBUG, "No Sieve rules exist.  No processing is required.\n");
 884                 return;
 885         }
 886
 887         CtdlLogPrintf(CTDL_DEBUG, "Rules found.  Performing Sieve processing for <%s>\n", roomname);
 888
 889         if (CtdlGetRoom(&CC->room, roomname) != 0) {
 890                 CtdlLogPrintf(CTDL_CRIT, "ERROR: cannot load <%s>\n", roomname);
 891                 return;
 892         }
 893
 894         /* Initialize the Sieve parser */
 895
 896         res = sieve2_alloc(&sieve2_context);
 897         if (res != SIEVE2_OK) {
 898                 CtdlLogPrintf(CTDL_CRIT, "sieve2_alloc() returned %d: %s\n", res, sieve2_errstr(res));
 899                 return;
 900         }
 901
 902         res = sieve2_callbacks(sieve2_context, ctdl_sieve_callbacks);
 903         if (res != SIEVE2_OK) {
 904                 CtdlLogPrintf(CTDL_CRIT, "sieve2_callbacks() returned %d: %s\n", res, sieve2_errstr(res));
 905                 goto BAIL;
 906         }
 907
 908         /* Validate the script */
 909
 910         struct ctdl_sieve my;           /* dummy ctdl_sieve struct just to pass "u" slong */
 911         memset(&my, 0, sizeof my);
 912         my.u = &u;
 913         res = sieve2_validate(sieve2_context, &my);
 914         if (res != SIEVE2_OK) {
 915                 CtdlLogPrintf(CTDL_CRIT, "sieve2_validate() returned %d: %s\n", res, sieve2_errstr(res));
 916                 goto BAIL;
 917         }
 918
 919         /* Do something useful */
 920         u.sieve2_context = sieve2_context;
 921         orig_lastproc = u.lastproc;
 922         CtdlForEachMessage(MSGS_GT, u.lastproc, NULL, NULL, NULL,
 923                 sieve_do_msg,
 924                 (void *) &u
 925         );
 926
 927 BAIL:
 928         res = sieve2_free(&sieve2_context);
 929         if (res != SIEVE2_OK) {
 930                 CtdlLogPrintf(CTDL_CRIT, "sieve2_free() returned %d: %s\n", res, sieve2_errstr(res));
 931         }
 932
 933         /* Rewrite the config if we have to */
 934         rewrite_ctdl_sieve_config(&u, (u.lastproc > orig_lastproc) ) ;
 935 }
 936
 937
 938 /*
 939  * Perform sieve processing for all rooms which require it
 940  */
 941 void perform_sieve_processing(void) {
 942         struct RoomProcList *ptr = NULL;
 943
 944         if (sieve_list != NULL) {
 945                 CtdlLogPrintf(CTDL_DEBUG, "Begin Sieve processing\n");
 946                 while (sieve_list != NULL) {
 947                         char spoolroomname[ROOMNAMELEN];
 948                         safestrncpy(spoolroomname, sieve_list->name, sizeof spoolroomname);
 949                         begin_critical_section(S_SIEVELIST);
 950
 951                         /* pop this record off the list */
 952                         ptr = sieve_list;
 953                         sieve_list = sieve_list->next;
 954                         free(ptr);
 955
 956                         /* invalidate any duplicate entries to prevent double processing */
 957                         for (ptr=sieve_list; ptr!=NULL; ptr=ptr->next) {
 958                                 if (!strcasecmp(ptr->name, spoolroomname)) {
 959                                         ptr->name[0] = 0;
 960                                 }
 961                         }
 962
 963                         end_critical_section(S_SIEVELIST);
 964                         if (spoolroomname[0] != 0) {
 965                                 sieve_do_room(spoolroomname);
 966                         }
 967                 }
 968         }
 969 }
 970
 971
 972 void msiv_load(struct sdm_userdata *u) {
 973         char hold_rm[ROOMNAMELEN];
 974
 975         strcpy(hold_rm, CC->room.QRname);       /* save current room */
 976
 977         /* Take a spin through the user's personal address book */
 978         if (CtdlGetRoom(&CC->room, USERCONFIGROOM) == 0) {
 979
 980                 u->config_msgnum = (-1);
 981                 strcpy(u->config_roomname, CC->room.QRname);
 982                 CtdlForEachMessage(MSGS_LAST, 1, NULL, SIEVECONFIG, NULL,
 983                         get_sieve_config_backend, (void *)u );
 984
 985         }
 986
 987         if (strcmp(CC->room.QRname, hold_rm)) {
 988                 CtdlGetRoom(&CC->room, hold_rm);    /* return to saved room */
 989         }
 990 }
 991
 992 void msiv_store(struct sdm_userdata *u, int yes_write_to_disk) {
 993 /*
 994  * Initialise the sieve configs last processed message number.
 995  * We don't need to get the highest message number for the users inbox since the systems
 996  * highest message number will be higher than that and loer than this scripts message number
 997  * This prevents this new script from processing any old messages in the inbox.
 998  * Most importantly it will prevent vacation messages being sent to lots of old messages
 999  * in the inbox.
1000  */
1001         u->lastproc = CtdlGetCurrentMessageNumber();
1002         rewrite_ctdl_sieve_config(u, yes_write_to_disk);
1003 }
1004
1005
1006 /*
1007  * Select the active script.
1008  * (Set script_name to an empty string to disable all scripts)
1009  *
1010  * Returns 0 on success or nonzero for error.
1011  */
1012 int msiv_setactive(struct sdm_userdata *u, char *script_name) {
1013         int ok = 0;
1014         struct sdm_script *s;
1015
1016         /* First see if the supplied value is ok */
1017
1018         if (IsEmptyStr(script_name)) {
1019                 ok = 1;
1020         }
1021         else {
1022                 for (s=u->first_script; s!=NULL; s=s->next) {
1023                         if (!strcasecmp(s->script_name, script_name)) {
1024                                 ok = 1;
1025                         }
1026                 }
1027         }
1028
1029         if (!ok) return(-1);
1030
1031         /* Now set the active script */
1032         for (s=u->first_script; s!=NULL; s=s->next) {
1033                 if (!strcasecmp(s->script_name, script_name)) {
1034                         s->script_active = 1;
1035                 }
1036                 else {
1037                         s->script_active = 0;
1038                 }
1039         }
1040
1041         return(0);
1042 }
1043
1044
1045 /*
1046  * Fetch a script by name.
1047  *
1048  * Returns NULL if the named script was not found, or a pointer to the script
1049  * if it was found.   NOTE: the caller does *not* own the memory returned by
1050  * this function.  Copy it if you need to keep it.
1051  */
1052 char *msiv_getscript(struct sdm_userdata *u, char *script_name) {
1053         struct sdm_script *s;
1054
1055         for (s=u->first_script; s!=NULL; s=s->next) {
1056                 if (!strcasecmp(s->script_name, script_name)) {
1057                         if (s->script_content != NULL) {
1058                                 return (s->script_content);
1059                         }
1060                 }
1061         }
1062
1063         return(NULL);
1064 }
1065
1066
1067 /*
1068  * Delete a script by name.
1069  *
1070  * Returns 0 if the script was deleted.
1071  *       1 if the script was not found.
1072  *       2 if the script cannot be deleted because it is active.
1073  */
1074 int msiv_deletescript(struct sdm_userdata *u, char *script_name) {
1075         struct sdm_script *s = NULL;
1076         struct sdm_script *script_to_delete = NULL;
1077
1078         for (s=u->first_script; s!=NULL; s=s->next) {
1079                 if (!strcasecmp(s->script_name, script_name)) {
1080                         script_to_delete = s;
1081                         if (s->script_active) {
1082                                 return(2);
1083                         }
1084                 }
1085         }
1086
1087         if (script_to_delete == NULL) return(1);
1088
1089         if (u->first_script == script_to_delete) {
1090                 u->first_script = u->first_script->next;
1091         }
1092         else for (s=u->first_script; s!=NULL; s=s->next) {
1093                 if (s->next == script_to_delete) {
1094                         s->next = s->next->next;
1095                 }
1096         }
1097
1098         free(script_to_delete->script_content);
1099         free(script_to_delete);
1100         return(0);
1101 }
1102
1103
1104 /*
1105  * Add or replace a new script.
1106  * NOTE: after this function returns, "u" owns the memory that "script_content"
1107  * was pointing to.
1108  */
1109 void msiv_putscript(struct sdm_userdata *u, char *script_name, char *script_content) {
1110         int replaced = 0;
1111         struct sdm_script *s, *sptr;
1112
1113         for (s=u->first_script; s!=NULL; s=s->next) {
1114                 if (!strcasecmp(s->script_name, script_name)) {
1115                         if (s->script_content != NULL) {
1116                                 free(s->script_content);
1117                         }
1118                         s->script_content = script_content;
1119                         replaced = 1;
1120                 }
1121         }
1122
1123         if (replaced == 0) {
1124                 sptr = malloc(sizeof(struct sdm_script));
1125                 safestrncpy(sptr->script_name, script_name, sizeof sptr->script_name);
1126                 sptr->script_content = script_content;
1127                 sptr->script_active = 0;
1128                 sptr->next = u->first_script;
1129                 u->first_script = sptr;
1130         }
1131 }
1132
1133
1134
1135 /*
1136  * Citadel protocol to manage sieve scripts.
1137  * This is basically a simplified (read: doesn't resemble IMAP) version
1138  * of the 'managesieve' protocol.
1139  */
1140 void cmd_msiv(char *argbuf) {
1141         char subcmd[256];
1142         struct sdm_userdata u;
1143         char script_name[256];
1144         char *script_content = NULL;
1145         struct sdm_script *s;
1146         int i;
1147         int changes_made = 0;
1148
1149         memset(&u, 0, sizeof(struct sdm_userdata));
1150
1151         if (CtdlAccessCheck(ac_logged_in)) return;
1152         extract_token(subcmd, argbuf, 0, '|', sizeof subcmd);
1153         msiv_load(&u);
1154
1155         if (!strcasecmp(subcmd, "putscript")) {
1156                 extract_token(script_name, argbuf, 1, '|', sizeof script_name);
1157                 if (!IsEmptyStr(script_name)) {
1158                         cprintf("%d Transmit script now\n", SEND_LISTING);
1159                         script_content = CtdlReadMessageBody(HKEY("000"), config.c_maxmsglen, NULL, 0, 0);
1160                         msiv_putscript(&u, script_name, script_content);
1161                         changes_made = 1;
1162                 }
1163                 else {
1164                         cprintf("%d Invalid script name.\n", ERROR + ILLEGAL_VALUE);
1165                 }
1166         }
1167
1168         else if (!strcasecmp(subcmd, "listscripts")) {
1169                 cprintf("%d Scripts:\n", LISTING_FOLLOWS);
1170                 for (s=u.first_script; s!=NULL; s=s->next) {
1171                         if (s->script_content != NULL) {
1172                                 cprintf("%s|%d|\n", s->script_name, s->script_active);
1173                         }
1174                 }
1175                 cprintf("000\n");
1176         }
1177
1178         else if (!strcasecmp(subcmd, "setactive")) {
1179                 extract_token(script_name, argbuf, 1, '|', sizeof script_name);
1180                 if (msiv_setactive(&u, script_name) == 0) {
1181                         cprintf("%d ok\n", CIT_OK);
1182                         changes_made = 1;
1183                 }
1184                 else {
1185                         cprintf("%d Script '%s' does not exist.\n",
1186                                 ERROR + ILLEGAL_VALUE,
1187                                 script_name
1188                         );
1189                 }
1190         }
1191
1192         else if (!strcasecmp(subcmd, "getscript")) {
1193                 extract_token(script_name, argbuf, 1, '|', sizeof script_name);
1194                 script_content = msiv_getscript(&u, script_name);
1195                 if (script_content != NULL) {
1196                         int script_len;
1197
1198                         cprintf("%d Script:\n", LISTING_FOLLOWS);
1199                         script_len = strlen(script_content);
1200                         client_write(script_content, script_len);
1201                         if (script_content[script_len-1] != '\n') {
1202                                 cprintf("\n");
1203                         }
1204                         cprintf("000\n");
1205                 }
1206                 else {
1207                         cprintf("%d Invalid script name.\n", ERROR + ILLEGAL_VALUE);
1208                 }
1209         }
1210
1211         else if (!strcasecmp(subcmd, "deletescript")) {
1212                 extract_token(script_name, argbuf, 1, '|', sizeof script_name);
1213                 i = msiv_deletescript(&u, script_name);
1214                 if (i == 0) {
1215                         cprintf("%d ok\n", CIT_OK);
1216                         changes_made = 1;
1217                 }
1218                 else if (i == 1) {
1219                         cprintf("%d Script '%s' does not exist.\n",
1220                                 ERROR + ILLEGAL_VALUE,
1221                                 script_name
1222                         );
1223                 }
1224                 else if (i == 2) {
1225                         cprintf("%d Script '%s' is active and cannot be deleted.\n",
1226                                 ERROR + ILLEGAL_VALUE,
1227                                 script_name
1228                         );
1229                 }
1230                 else {
1231                         cprintf("%d unknown error\n", ERROR);
1232                 }
1233         }
1234
1235         else {
1236                 cprintf("%d Invalid subcommand\n", ERROR + CMD_NOT_SUPPORTED);
1237         }
1238
1239         msiv_store(&u, changes_made);
1240 }
1241
1242
1243
1244 void ctdl_sieve_init(void) {
1245         char *cred = NULL;
1246         sieve2_context_t *sieve2_context = NULL;
1247         int res;
1248
1249         /*
1250          *      We don't really care about dumping the entire credits to the log
1251          *      every time the server is initialized.  The documentation will suffice
1252          *      for that purpose.  We are making a call to sieve2_credits() in order
1253          *      to demonstrate that we have successfully linked in to libsieve.
1254          */
1255         cred = strdup(sieve2_credits());
1256         if (cred == NULL) return;
1257
1258         if (strlen(cred) > 60) {
1259                 strcpy(&cred[55], "...");
1260         }
1261
1262         CtdlLogPrintf(CTDL_INFO, "%s\n",cred);
1263         free(cred);
1264
1265         /* Briefly initialize a Sieve parser instance just so we can list the
1266          * extensions that are available.
1267          */
1268         res = sieve2_alloc(&sieve2_context);
1269         if (res != SIEVE2_OK) {
1270                 CtdlLogPrintf(CTDL_CRIT, "sieve2_alloc() returned %d: %s\n", res, sieve2_errstr(res));
1271                 return;
1272         }
1273
1274         res = sieve2_callbacks(sieve2_context, ctdl_sieve_callbacks);
1275         if (res != SIEVE2_OK) {
1276                 CtdlLogPrintf(CTDL_CRIT, "sieve2_callbacks() returned %d: %s\n", res, sieve2_errstr(res));
1277                 goto BAIL;
1278         }
1279
1280         msiv_extensions = strdup(sieve2_listextensions(sieve2_context));
1281         CtdlLogPrintf(CTDL_INFO, "Extensions: %s\n", msiv_extensions);
1282
1283 BAIL:   res = sieve2_free(&sieve2_context);
1284         if (res != SIEVE2_OK) {
1285                 CtdlLogPrintf(CTDL_CRIT, "sieve2_free() returned %d: %s\n", res, sieve2_errstr(res));
1286         }
1287
1288 }
1289
1290 int serv_sieve_room(struct ctdlroom *room)
1291 {
1292         if (!strcasecmp(&room->QRname[11], MAILROOM)) {
1293                 sieve_queue_room(room);
1294         }
1295         return 0;
1296 }
1297
1298 CTDL_MODULE_INIT(sieve)
1299 {
1300         if (!threading)
1301         {
1302
1303                 ctdl_sieve_init();
1304                 CtdlRegisterProtoHook(cmd_msiv, "MSIV", "Manage Sieve scripts");
1305                 CtdlRegisterRoomHook(serv_sieve_room);
1306                 CtdlRegisterSessionHook(perform_sieve_processing, EVT_HOUSE);
1307         }
1308
1309         /* return our Subversion id for the Log */
1310         return "$Id$";
1311 }
1312