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