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) 2007-2009 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);
 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\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         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 = malloc(SIZ);
 545         CC->redirect_len = 0;
 546         CC->redirect_alloc = SIZ;
 547         CtdlOutputPreLoadedMsg(msg, MT_RFC822, HEADERS_ONLY, 0, 1, 0);
 548         my.rfc822headers = CC->redirect_buffer;
 549         headers_len = CC->redirect_len;
 550         CC->redirect_buffer = NULL;
 551         CC->redirect_len = 0;
 552         CC->redirect_alloc = 0;
 553
 554         /*
 555          * libSieve clobbers the stack if it encounters badly formed
 556          * headers.  Sanitize our headers by stripping nonprintable
 557          * characters.
 558          */
 559         for (i=0; i<headers_len; ++i) {
 560                 if (!isascii(my.rfc822headers[i])) {
 561                         my.rfc822headers[i] = '_';
 562                 }
 563         }
 564
 565         my.keep = 0;                            /* Set to 1 to declare an *explicit* keep */
 566         my.cancel_implicit_keep = 0;            /* Some actions will cancel the implicit keep */
 567         my.usernum = atol(CC->room.QRname);     /* Keep track of the owner of the room's namespace */
 568         my.msgnum = msgnum;                     /* Keep track of the message number in our local store */
 569         my.u = u;                               /* Hand off a pointer to the rest of this info */
 570
 571         /* Keep track of the recipient so we can do handling based on it later */
 572         process_rfc822_addr(msg->cm_fields['R'], my.recp_user, my.recp_node, my.recp_name);
 573
 574         /* Keep track of the sender so we can use it for REJECT and VACATION responses */
 575         if (msg->cm_fields['F'] != NULL) {
 576                 safestrncpy(my.sender, msg->cm_fields['F'], sizeof my.sender);
 577         }
 578         else if ( (msg->cm_fields['A'] != NULL) && (msg->cm_fields['N'] != NULL) ) {
 579                 snprintf(my.sender, sizeof my.sender, "%s@%s", msg->cm_fields['A'], msg->cm_fields['N']);
 580         }
 581         else if (msg->cm_fields['A'] != NULL) {
 582                 safestrncpy(my.sender, msg->cm_fields['A'], sizeof my.sender);
 583         }
 584         else {
 585                 strcpy(my.sender, "");
 586         }
 587
 588         /* Keep track of the subject so we can use it for VACATION responses */
 589         if (msg->cm_fields['U'] != NULL) {
 590                 safestrncpy(my.subject, msg->cm_fields['U'], sizeof my.subject);
 591         }
 592         else {
 593                 strcpy(my.subject, "");
 594         }
 595
 596         /* Keep track of the envelope-from address (use body-from if not found) */
 597         if (msg->cm_fields['P'] != NULL) {
 598                 safestrncpy(my.envelope_from, msg->cm_fields['P'], sizeof my.envelope_from);
 599                 stripallbut(my.envelope_from, '<', '>');
 600         }
 601         else if (msg->cm_fields['F'] != NULL) {
 602                 safestrncpy(my.envelope_from, msg->cm_fields['F'], sizeof my.envelope_from);
 603                 stripallbut(my.envelope_from, '<', '>');
 604         }
 605         else {
 606                 strcpy(my.envelope_from, "");
 607         }
 608
 609         len = strlen(my.envelope_from);
 610         for (i=0; i<len; ++i) {
 611                 if (isspace(my.envelope_from[i])) my.envelope_from[i] = '_';
 612         }
 613         if (haschar(my.envelope_from, '@') == 0) {
 614                 strcat(my.envelope_from, "@");
 615                 strcat(my.envelope_from, config.c_fqdn);
 616         }
 617
 618         /* Keep track of the envelope-to address (use body-to if not found) */
 619         if (msg->cm_fields['V'] != NULL) {
 620                 safestrncpy(my.envelope_to, msg->cm_fields['V'], sizeof my.envelope_to);
 621                 stripallbut(my.envelope_to, '<', '>');
 622         }
 623         else if (msg->cm_fields['R'] != NULL) {
 624                 safestrncpy(my.envelope_to, msg->cm_fields['R'], sizeof my.envelope_to);
 625                 if (msg->cm_fields['D'] != NULL) {
 626                         strcat(my.envelope_to, "@");
 627                         strcat(my.envelope_to, msg->cm_fields['D']);
 628                 }
 629                 stripallbut(my.envelope_to, '<', '>');
 630         }
 631         else {
 632                 strcpy(my.envelope_to, "");
 633         }
 634
 635         len = strlen(my.envelope_to);
 636         for (i=0; i<len; ++i) {
 637                 if (isspace(my.envelope_to[i])) my.envelope_to[i] = '_';
 638         }
 639         if (haschar(my.envelope_to, '@') == 0) {
 640                 strcat(my.envelope_to, "@");
 641                 strcat(my.envelope_to, config.c_fqdn);
 642         }
 643
 644         CtdlFreeMessage(msg);
 645
 646         sieve2_setvalue_string(sieve2_context, "allheaders", my.rfc822headers);
 647
 648         CtdlLogPrintf(CTDL_DEBUG, "Calling sieve2_execute()\n");
 649         res = sieve2_execute(sieve2_context, &my);
 650         if (res != SIEVE2_OK) {
 651                 CtdlLogPrintf(CTDL_CRIT, "sieve2_execute() returned %d: %s\n", res, sieve2_errstr(res));
 652         }
 653
 654         free(my.rfc822headers);
 655         my.rfc822headers = NULL;
 656
 657         /*
 658          * Delete the message from the inbox unless either we were told not to, or
 659          * if no other action was successfully taken.
 660          */
 661         if ( (!my.keep) && (my.cancel_implicit_keep) ) {
 662                 CtdlLogPrintf(CTDL_DEBUG, "keep is 0 -- deleting message from inbox\n");
 663                 CtdlDeleteMessages(CC->room.QRname, &msgnum, 1, "");
 664         }
 665
 666         CtdlLogPrintf(CTDL_DEBUG, "Completed sieve processing on msg <%ld>\n", msgnum);
 667         u->lastproc = msgnum;
 668
 669         return;
 670 }
 671
 672
 673
 674 /*
 675  * Given the on-disk representation of our Sieve config, load
 676  * it into an in-memory data structure.
 677  */
 678 void parse_sieve_config(char *conf, struct sdm_userdata *u) {
 679         char *ptr;
 680         char *c, *vacrec;
 681         char keyword[256];
 682         struct sdm_script *sptr;
 683         struct sdm_vacation *vptr;
 684
 685         ptr = conf;
 686         while (c = ptr, ptr = bmstrcasestr(ptr, CTDLSIEVECONFIGSEPARATOR), ptr != NULL) {
 687                 *ptr = 0;
 688                 ptr += strlen(CTDLSIEVECONFIGSEPARATOR);
 689
 690                 extract_token(keyword, c, 0, '|', sizeof keyword);
 691
 692                 if (!strcasecmp(keyword, "lastproc")) {
 693                         u->lastproc = extract_long(c, 1);
 694                 }
 695
 696                 else if (!strcasecmp(keyword, "script")) {
 697                         sptr = malloc(sizeof(struct sdm_script));
 698                         extract_token(sptr->script_name, c, 1, '|', sizeof sptr->script_name);
 699                         sptr->script_active = extract_int(c, 2);
 700                         remove_token(c, 0, '|');
 701                         remove_token(c, 0, '|');
 702                         remove_token(c, 0, '|');
 703                         sptr->script_content = strdup(c);
 704                         sptr->next = u->first_script;
 705                         u->first_script = sptr;
 706                 }
 707
 708                 else if (!strcasecmp(keyword, "vacation")) {
 709
 710                         if (c != NULL) while (vacrec=c, c=strchr(c, '\n'), (c != NULL)) {
 711
 712                                 *c = 0;
 713                                 ++c;
 714
 715                                 if (strncasecmp(vacrec, "vacation|", 9)) {
 716                                         vptr = malloc(sizeof(struct sdm_vacation));
 717                                         extract_token(vptr->fromaddr, vacrec, 0, '|', sizeof vptr->fromaddr);
 718                                         vptr->timestamp = extract_long(vacrec, 1);
 719                                         vptr->next = u->first_vacation;
 720                                         u->first_vacation = vptr;
 721                                 }
 722                         }
 723                 }
 724
 725                 /* ignore unknown keywords */
 726         }
 727 }
 728
 729 /*
 730  * We found the Sieve configuration for this user.
 731  * Now do something with it.
 732  */
 733 void get_sieve_config_backend(long msgnum, void *userdata) {
 734         struct sdm_userdata *u = (struct sdm_userdata *) userdata;
 735         struct CtdlMessage *msg;
 736         char *conf;
 737
 738         u->config_msgnum = msgnum;
 739         msg = CtdlFetchMessage(msgnum, 1);
 740         if (msg == NULL) {
 741                 u->config_msgnum = (-1) ;
 742                 return;
 743         }
 744
 745         conf = msg->cm_fields['M'];
 746         msg->cm_fields['M'] = NULL;
 747         CtdlFreeMessage(msg);
 748
 749         if (conf != NULL) {
 750                 parse_sieve_config(conf, u);
 751                 free(conf);
 752         }
 753
 754 }
 755
 756
 757 /*
 758  * Write our citadel sieve config back to disk
 759  *
 760  * (Set yes_write_to_disk to nonzero to make it actually write the config;
 761  * otherwise it just frees the data structures.)
 762  */
 763 void rewrite_ctdl_sieve_config(struct sdm_userdata *u, int yes_write_to_disk) {
 764         char *text;
 765         struct sdm_script *sptr;
 766         struct sdm_vacation *vptr;
 767         size_t tsize;
 768
 769         text = malloc(1024);
 770         tsize = 1024;
 771         snprintf(text, 1024,
 772                 "Content-type: application/x-citadel-sieve-config\n"
 773                 "\n"
 774                 CTDLSIEVECONFIGSEPARATOR
 775                 "lastproc|%ld"
 776                 CTDLSIEVECONFIGSEPARATOR
 777         ,
 778                 u->lastproc
 779         );
 780
 781         while (u->first_script != NULL) {
 782                 size_t tlen;
 783                 tlen = strlen(text);
 784                 tsize = tlen + strlen(u->first_script->script_content) +256;
 785                 text = realloc(text, tsize);
 786                 sprintf(&text[strlen(text)], "script|%s|%d|%s" CTDLSIEVECONFIGSEPARATOR,
 787                         u->first_script->script_name,
 788                         u->first_script->script_active,
 789                         u->first_script->script_content
 790                 );
 791                 sptr = u->first_script;
 792                 u->first_script = u->first_script->next;
 793                 free(sptr->script_content);
 794                 free(sptr);
 795         }
 796
 797         if (u->first_vacation != NULL) {
 798
 799                 tsize = strlen(text) + 256;
 800                 for (vptr = u->first_vacation; vptr != NULL; vptr = vptr->next) {
 801                         tsize += strlen(vptr->fromaddr + 32);
 802                 }
 803                 text = realloc(text, tsize);
 804
 805                 sprintf(&text[strlen(text)], "vacation|\n");
 806                 while (u->first_vacation != NULL) {
 807                         if ( (time(NULL) - u->first_vacation->timestamp) < (MAX_VACATION * 86400)) {
 808                                 sprintf(&text[strlen(text)], "%s|%ld\n",
 809                                         u->first_vacation->fromaddr,
 810                                         u->first_vacation->timestamp
 811                                 );
 812                         }
 813                         vptr = u->first_vacation;
 814                         u->first_vacation = u->first_vacation->next;
 815                         free(vptr);
 816                 }
 817                 sprintf(&text[strlen(text)], CTDLSIEVECONFIGSEPARATOR);
 818         }
 819
 820         if (yes_write_to_disk)
 821         {
 822                 /* Save the config */
 823                 quickie_message("Citadel", NULL, NULL, u->config_roomname,
 824                                 text,
 825                                 4,
 826                                 "Sieve configuration"
 827                 );
 828
 829                 /* And delete the old one */
 830                 if (u->config_msgnum > 0) {
 831                         CtdlDeleteMessages(u->config_roomname, &u->config_msgnum, 1, "");
 832                 }
 833         }
 834
 835         free (text);
 836
 837 }
 838
 839
 840 /*
 841  * This is our callback registration table for libSieve.
 842  */
 843 sieve2_callback_t ctdl_sieve_callbacks[] = {
 844         { SIEVE2_ACTION_REJECT,         ctdl_reject             },
 845         { SIEVE2_ACTION_VACATION,       ctdl_vacation           },
 846         { SIEVE2_ERRCALL_PARSE,         ctdl_errparse           },
 847         { SIEVE2_ERRCALL_RUNTIME,       ctdl_errexec            },
 848         { SIEVE2_ACTION_FILEINTO,       ctdl_fileinto           },
 849         { SIEVE2_ACTION_REDIRECT,       ctdl_redirect           },
 850         { SIEVE2_ACTION_DISCARD,        ctdl_discard            },
 851         { SIEVE2_ACTION_KEEP,           ctdl_keep               },
 852         { SIEVE2_SCRIPT_GETSCRIPT,      ctdl_getscript          },
 853         { SIEVE2_DEBUG_TRACE,           ctdl_debug              },
 854         { SIEVE2_MESSAGE_GETALLHEADERS, ctdl_getheaders         },
 855         { SIEVE2_MESSAGE_GETSIZE,       ctdl_getsize            },
 856         { SIEVE2_MESSAGE_GETENVELOPE,   ctdl_getenvelope        },
 857 /*
 858  * These actions are unsupported by Citadel so we don't declare them.
 859  *
 860         { SIEVE2_ACTION_NOTIFY,         ctdl_notify             },
 861         { SIEVE2_MESSAGE_GETSUBADDRESS, ctdl_getsubaddress      },
 862         { SIEVE2_MESSAGE_GETBODY,       ctdl_getbody            },
 863  *
 864  */
 865         { 0 }
 866 };
 867
 868
 869 /*
 870  * Perform sieve processing for a single room
 871  */
 872 void sieve_do_room(char *roomname) {
 873
 874         struct sdm_userdata u;
 875         sieve2_context_t *sieve2_context = NULL;        /* Context for sieve parser */
 876         int res;                                        /* Return code from libsieve calls */
 877         long orig_lastproc = 0;
 878
 879         memset(&u, 0, sizeof u);
 880
 881         /* See if the user who owns this 'mailbox' has any Sieve scripts that
 882          * require execution.
 883          */
 884         snprintf(u.config_roomname, sizeof u.config_roomname, "%010ld.%s", atol(roomname), USERCONFIGROOM);
 885         if (CtdlGetRoom(&CC->room, u.config_roomname) != 0) {
 886                 CtdlLogPrintf(CTDL_DEBUG, "<%s> does not exist.  No processing is required.\n", u.config_roomname);
 887                 return;
 888         }
 889
 890         /*
 891          * Find the sieve scripts and control record and do something
 892          */
 893         u.config_msgnum = (-1);
 894         CtdlForEachMessage(MSGS_LAST, 1, NULL, SIEVECONFIG, NULL,
 895                 get_sieve_config_backend, (void *)&u );
 896
 897         if (u.config_msgnum < 0) {
 898                 CtdlLogPrintf(CTDL_DEBUG, "No Sieve rules exist.  No processing is required.\n");
 899                 return;
 900         }
 901
 902         CtdlLogPrintf(CTDL_DEBUG, "Rules found.  Performing Sieve processing for <%s>\n", roomname);
 903
 904         if (CtdlGetRoom(&CC->room, roomname) != 0) {
 905                 CtdlLogPrintf(CTDL_CRIT, "ERROR: cannot load <%s>\n", roomname);
 906                 return;
 907         }
 908
 909         /* Initialize the Sieve parser */
 910
 911         res = sieve2_alloc(&sieve2_context);
 912         if (res != SIEVE2_OK) {
 913                 CtdlLogPrintf(CTDL_CRIT, "sieve2_alloc() returned %d: %s\n", res, sieve2_errstr(res));
 914                 return;
 915         }
 916
 917         res = sieve2_callbacks(sieve2_context, ctdl_sieve_callbacks);
 918         if (res != SIEVE2_OK) {
 919                 CtdlLogPrintf(CTDL_CRIT, "sieve2_callbacks() returned %d: %s\n", res, sieve2_errstr(res));
 920                 goto BAIL;
 921         }
 922
 923         /* Validate the script */
 924
 925         struct ctdl_sieve my;           /* dummy ctdl_sieve struct just to pass "u" slong */
 926         memset(&my, 0, sizeof my);
 927         my.u = &u;
 928         res = sieve2_validate(sieve2_context, &my);
 929         if (res != SIEVE2_OK) {
 930                 CtdlLogPrintf(CTDL_CRIT, "sieve2_validate() returned %d: %s\n", res, sieve2_errstr(res));
 931                 goto BAIL;
 932         }
 933
 934         /* Do something useful */
 935         u.sieve2_context = sieve2_context;
 936         orig_lastproc = u.lastproc;
 937         CtdlForEachMessage(MSGS_GT, u.lastproc, NULL, NULL, NULL,
 938                 sieve_do_msg,
 939                 (void *) &u
 940         );
 941
 942 BAIL:
 943         res = sieve2_free(&sieve2_context);
 944         if (res != SIEVE2_OK) {
 945                 CtdlLogPrintf(CTDL_CRIT, "sieve2_free() returned %d: %s\n", res, sieve2_errstr(res));
 946         }
 947
 948         /* Rewrite the config if we have to */
 949         rewrite_ctdl_sieve_config(&u, (u.lastproc > orig_lastproc) ) ;
 950 }
 951
 952
 953 /*
 954  * Perform sieve processing for all rooms which require it
 955  */
 956 void perform_sieve_processing(void) {
 957         struct RoomProcList *ptr = NULL;
 958
 959         if (sieve_list != NULL) {
 960                 CtdlLogPrintf(CTDL_DEBUG, "Begin Sieve processing\n");
 961                 while (sieve_list != NULL) {
 962                         char spoolroomname[ROOMNAMELEN];
 963                         safestrncpy(spoolroomname, sieve_list->name, sizeof spoolroomname);
 964                         begin_critical_section(S_SIEVELIST);
 965
 966                         /* pop this record off the list */
 967                         ptr = sieve_list;
 968                         sieve_list = sieve_list->next;
 969                         free(ptr);
 970
 971                         /* invalidate any duplicate entries to prevent double processing */
 972                         for (ptr=sieve_list; ptr!=NULL; ptr=ptr->next) {
 973                                 if (!strcasecmp(ptr->name, spoolroomname)) {
 974                                         ptr->name[0] = 0;
 975                                 }
 976                         }
 977
 978                         end_critical_section(S_SIEVELIST);
 979                         if (spoolroomname[0] != 0) {
 980                                 sieve_do_room(spoolroomname);
 981                         }
 982                 }
 983         }
 984 }
 985
 986
 987 void msiv_load(struct sdm_userdata *u) {
 988         char hold_rm[ROOMNAMELEN];
 989
 990         strcpy(hold_rm, CC->room.QRname);       /* save current room */
 991
 992         /* Take a spin through the user's personal address book */
 993         if (CtdlGetRoom(&CC->room, USERCONFIGROOM) == 0) {
 994
 995                 u->config_msgnum = (-1);
 996                 strcpy(u->config_roomname, CC->room.QRname);
 997                 CtdlForEachMessage(MSGS_LAST, 1, NULL, SIEVECONFIG, NULL,
 998                         get_sieve_config_backend, (void *)u );
 999
1000         }
1001
1002         if (strcmp(CC->room.QRname, hold_rm)) {
1003                 CtdlGetRoom(&CC->room, hold_rm);    /* return to saved room */
1004         }
1005 }
1006
1007 void msiv_store(struct sdm_userdata *u, int yes_write_to_disk) {
1008 /*
1009  * Initialise the sieve configs last processed message number.
1010  * We don't need to get the highest message number for the users inbox since the systems
1011  * highest message number will be higher than that and loer than this scripts message number
1012  * This prevents this new script from processing any old messages in the inbox.
1013  * Most importantly it will prevent vacation messages being sent to lots of old messages
1014  * in the inbox.
1015  */
1016         u->lastproc = CtdlGetCurrentMessageNumber();
1017         rewrite_ctdl_sieve_config(u, yes_write_to_disk);
1018 }
1019
1020
1021 /*
1022  * Select the active script.
1023  * (Set script_name to an empty string to disable all scripts)
1024  *
1025  * Returns 0 on success or nonzero for error.
1026  */
1027 int msiv_setactive(struct sdm_userdata *u, char *script_name) {
1028         int ok = 0;
1029         struct sdm_script *s;
1030
1031         /* First see if the supplied value is ok */
1032
1033         if (IsEmptyStr(script_name)) {
1034                 ok = 1;
1035         }
1036         else {
1037                 for (s=u->first_script; s!=NULL; s=s->next) {
1038                         if (!strcasecmp(s->script_name, script_name)) {
1039                                 ok = 1;
1040                         }
1041                 }
1042         }
1043
1044         if (!ok) return(-1);
1045
1046         /* Now set the active script */
1047         for (s=u->first_script; s!=NULL; s=s->next) {
1048                 if (!strcasecmp(s->script_name, script_name)) {
1049                         s->script_active = 1;
1050                 }
1051                 else {
1052                         s->script_active = 0;
1053                 }
1054         }
1055
1056         return(0);
1057 }
1058
1059
1060 /*
1061  * Fetch a script by name.
1062  *
1063  * Returns NULL if the named script was not found, or a pointer to the script
1064  * if it was found.   NOTE: the caller does *not* own the memory returned by
1065  * this function.  Copy it if you need to keep it.
1066  */
1067 char *msiv_getscript(struct sdm_userdata *u, char *script_name) {
1068         struct sdm_script *s;
1069
1070         for (s=u->first_script; s!=NULL; s=s->next) {
1071                 if (!strcasecmp(s->script_name, script_name)) {
1072                         if (s->script_content != NULL) {
1073                                 return (s->script_content);
1074                         }
1075                 }
1076         }
1077
1078         return(NULL);
1079 }
1080
1081
1082 /*
1083  * Delete a script by name.
1084  *
1085  * Returns 0 if the script was deleted.
1086  *       1 if the script was not found.
1087  *       2 if the script cannot be deleted because it is active.
1088  */
1089 int msiv_deletescript(struct sdm_userdata *u, char *script_name) {
1090         struct sdm_script *s = NULL;
1091         struct sdm_script *script_to_delete = NULL;
1092
1093         for (s=u->first_script; s!=NULL; s=s->next) {
1094                 if (!strcasecmp(s->script_name, script_name)) {
1095                         script_to_delete = s;
1096                         if (s->script_active) {
1097                                 return(2);
1098                         }
1099                 }
1100         }
1101
1102         if (script_to_delete == NULL) return(1);
1103
1104         if (u->first_script == script_to_delete) {
1105                 u->first_script = u->first_script->next;
1106         }
1107         else for (s=u->first_script; s!=NULL; s=s->next) {
1108                 if (s->next == script_to_delete) {
1109                         s->next = s->next->next;
1110                 }
1111         }
1112
1113         free(script_to_delete->script_content);
1114         free(script_to_delete);
1115         return(0);
1116 }
1117
1118
1119 /*
1120  * Add or replace a new script.
1121  * NOTE: after this function returns, "u" owns the memory that "script_content"
1122  * was pointing to.
1123  */
1124 void msiv_putscript(struct sdm_userdata *u, char *script_name, char *script_content) {
1125         int replaced = 0;
1126         struct sdm_script *s, *sptr;
1127
1128         for (s=u->first_script; s!=NULL; s=s->next) {
1129                 if (!strcasecmp(s->script_name, script_name)) {
1130                         if (s->script_content != NULL) {
1131                                 free(s->script_content);
1132                         }
1133                         s->script_content = script_content;
1134                         replaced = 1;
1135                 }
1136         }
1137
1138         if (replaced == 0) {
1139                 sptr = malloc(sizeof(struct sdm_script));
1140                 safestrncpy(sptr->script_name, script_name, sizeof sptr->script_name);
1141                 sptr->script_content = script_content;
1142                 sptr->script_active = 0;
1143                 sptr->next = u->first_script;
1144                 u->first_script = sptr;
1145         }
1146 }
1147
1148
1149
1150 /*
1151  * Citadel protocol to manage sieve scripts.
1152  * This is basically a simplified (read: doesn't resemble IMAP) version
1153  * of the 'managesieve' protocol.
1154  */
1155 void cmd_msiv(char *argbuf) {
1156         char subcmd[256];
1157         struct sdm_userdata u;
1158         char script_name[256];
1159         char *script_content = NULL;
1160         struct sdm_script *s;
1161         int i;
1162         int changes_made = 0;
1163
1164         memset(&u, 0, sizeof(struct sdm_userdata));
1165
1166         if (CtdlAccessCheck(ac_logged_in)) return;
1167         extract_token(subcmd, argbuf, 0, '|', sizeof subcmd);
1168         msiv_load(&u);
1169
1170         if (!strcasecmp(subcmd, "putscript")) {
1171                 extract_token(script_name, argbuf, 1, '|', sizeof script_name);
1172                 if (!IsEmptyStr(script_name)) {
1173                         cprintf("%d Transmit script now\n", SEND_LISTING);
1174                         script_content = CtdlReadMessageBody("000", config.c_maxmsglen, NULL, 0, 0);
1175                         msiv_putscript(&u, script_name, script_content);
1176                         changes_made = 1;
1177                 }
1178                 else {
1179                         cprintf("%d Invalid script name.\n", ERROR + ILLEGAL_VALUE);
1180                 }
1181         }
1182
1183         else if (!strcasecmp(subcmd, "listscripts")) {
1184                 cprintf("%d Scripts:\n", LISTING_FOLLOWS);
1185                 for (s=u.first_script; s!=NULL; s=s->next) {
1186                         if (s->script_content != NULL) {
1187                                 cprintf("%s|%d|\n", s->script_name, s->script_active);
1188                         }
1189                 }
1190                 cprintf("000\n");
1191         }
1192
1193         else if (!strcasecmp(subcmd, "setactive")) {
1194                 extract_token(script_name, argbuf, 1, '|', sizeof script_name);
1195                 if (msiv_setactive(&u, script_name) == 0) {
1196                         cprintf("%d ok\n", CIT_OK);
1197                         changes_made = 1;
1198                 }
1199                 else {
1200                         cprintf("%d Script '%s' does not exist.\n",
1201                                 ERROR + ILLEGAL_VALUE,
1202                                 script_name
1203                         );
1204                 }
1205         }
1206
1207         else if (!strcasecmp(subcmd, "getscript")) {
1208                 extract_token(script_name, argbuf, 1, '|', sizeof script_name);
1209                 script_content = msiv_getscript(&u, script_name);
1210                 if (script_content != NULL) {
1211                         int script_len;
1212
1213                         cprintf("%d Script:\n", LISTING_FOLLOWS);
1214                         script_len = strlen(script_content);
1215                         client_write(script_content, script_len);
1216                         if (script_content[script_len-1] != '\n') {
1217                                 cprintf("\n");
1218                         }
1219                         cprintf("000\n");
1220                 }
1221                 else {
1222                         cprintf("%d Invalid script name.\n", ERROR + ILLEGAL_VALUE);
1223                 }
1224         }
1225
1226         else if (!strcasecmp(subcmd, "deletescript")) {
1227                 extract_token(script_name, argbuf, 1, '|', sizeof script_name);
1228                 i = msiv_deletescript(&u, script_name);
1229                 if (i == 0) {
1230                         cprintf("%d ok\n", CIT_OK);
1231                         changes_made = 1;
1232                 }
1233                 else if (i == 1) {
1234                         cprintf("%d Script '%s' does not exist.\n",
1235                                 ERROR + ILLEGAL_VALUE,
1236                                 script_name
1237                         );
1238                 }
1239                 else if (i == 2) {
1240                         cprintf("%d Script '%s' is active and cannot be deleted.\n",
1241                                 ERROR + ILLEGAL_VALUE,
1242                                 script_name
1243                         );
1244                 }
1245                 else {
1246                         cprintf("%d unknown error\n", ERROR);
1247                 }
1248         }
1249
1250         else {
1251                 cprintf("%d Invalid subcommand\n", ERROR + CMD_NOT_SUPPORTED);
1252         }
1253
1254         msiv_store(&u, changes_made);
1255 }
1256
1257
1258
1259 void ctdl_sieve_init(void) {
1260         char *cred = NULL;
1261         sieve2_context_t *sieve2_context = NULL;
1262         int res;
1263
1264         /*
1265          *      We don't really care about dumping the entire credits to the log
1266          *      every time the server is initialized.  The documentation will suffice
1267          *      for that purpose.  We are making a call to sieve2_credits() in order
1268          *      to demonstrate that we have successfully linked in to libsieve.
1269          */
1270         cred = strdup(sieve2_credits());
1271         if (cred == NULL) return;
1272
1273         if (strlen(cred) > 60) {
1274                 strcpy(&cred[55], "...");
1275         }
1276
1277         CtdlLogPrintf(CTDL_INFO, "%s\n",cred);
1278         free(cred);
1279
1280         /* Briefly initialize a Sieve parser instance just so we can list the
1281          * extensions that are available.
1282          */
1283         res = sieve2_alloc(&sieve2_context);
1284         if (res != SIEVE2_OK) {
1285                 CtdlLogPrintf(CTDL_CRIT, "sieve2_alloc() returned %d: %s\n", res, sieve2_errstr(res));
1286                 return;
1287         }
1288
1289         res = sieve2_callbacks(sieve2_context, ctdl_sieve_callbacks);
1290         if (res != SIEVE2_OK) {
1291                 CtdlLogPrintf(CTDL_CRIT, "sieve2_callbacks() returned %d: %s\n", res, sieve2_errstr(res));
1292                 goto BAIL;
1293         }
1294
1295         msiv_extensions = strdup(sieve2_listextensions(sieve2_context));
1296         CtdlLogPrintf(CTDL_INFO, "Extensions: %s\n", msiv_extensions);
1297
1298 BAIL:   res = sieve2_free(&sieve2_context);
1299         if (res != SIEVE2_OK) {
1300                 CtdlLogPrintf(CTDL_CRIT, "sieve2_free() returned %d: %s\n", res, sieve2_errstr(res));
1301         }
1302
1303 }
1304
1305 int serv_sieve_room(struct ctdlroom *room)
1306 {
1307         if (!strcasecmp(&room->QRname[11], MAILROOM)) {
1308                 sieve_queue_room(room);
1309         }
1310         return 0;
1311 }
1312
1313 CTDL_MODULE_INIT(sieve)
1314 {
1315         if (!threading)
1316         {
1317
1318                 ctdl_sieve_init();
1319                 CtdlRegisterProtoHook(cmd_msiv, "MSIV", "Manage Sieve scripts");
1320                 CtdlRegisterRoomHook(serv_sieve_room);
1321                 CtdlRegisterSessionHook(perform_sieve_processing, EVT_HOUSE);
1322         }
1323
1324         /* return our Subversion id for the Log */
1325         return "$Id$";
1326 }
1327