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 "room_ops.h"
  55 #include "policy.h"
  56 #include "database.h"
  57 #include "msgbase.h"
  58 #include "internet_addressing.h"
  59 #include "ctdl_module.h"
  60 #include "serv_sieve.h"
  61
  62 struct RoomProcList *sieve_list = NULL;
  63 char *msiv_extensions = NULL;
  64
  65
  66 /*
  67  * Callback function to send libSieve trace messages to Citadel log facility
  68  */
  69 int ctdl_debug(sieve2_context_t *s, void *my)
  70 {
  71         CtdlLogPrintf(CTDL_DEBUG, "Sieve: %s\n", sieve2_getvalue_string(s, "message"));
  72         return SIEVE2_OK;
  73 }
  74
  75
  76 /*
  77  * Callback function to log script parsing errors
  78  */
  79 int ctdl_errparse(sieve2_context_t *s, void *my)
  80 {
  81         CtdlLogPrintf(CTDL_WARNING, "Error in script, line %d: %s\n",
  82                 sieve2_getvalue_int(s, "lineno"),
  83                 sieve2_getvalue_string(s, "message")
  84         );
  85         return SIEVE2_OK;
  86 }
  87
  88
  89 /*
  90  * Callback function to log script execution errors
  91  */
  92 int ctdl_errexec(sieve2_context_t *s, void *my)
  93 {
  94         CtdlLogPrintf(CTDL_WARNING, "Error executing script: %s\n",
  95                 sieve2_getvalue_string(s, "message")
  96         );
  97         return SIEVE2_OK;
  98 }
  99
 100
 101 /*
 102  * Callback function to redirect a message to a different folder
 103  */
 104 int ctdl_redirect(sieve2_context_t *s, void *my)
 105 {
 106         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 107         struct CtdlMessage *msg = NULL;
 108         struct recptypes *valid = NULL;
 109         char recp[256];
 110
 111         safestrncpy(recp, sieve2_getvalue_string(s, "address"), sizeof recp);
 112
 113         CtdlLogPrintf(CTDL_DEBUG, "Action is REDIRECT, recipient <%s>\n", recp);
 114
 115         valid = validate_recipients(recp, NULL, 0);
 116         if (valid == NULL) {
 117                 CtdlLogPrintf(CTDL_WARNING, "REDIRECT failed: bad recipient <%s>\n", recp);
 118                 return SIEVE2_ERROR_BADARGS;
 119         }
 120         if (valid->num_error > 0) {
 121                 CtdlLogPrintf(CTDL_WARNING, "REDIRECT failed: bad recipient <%s>\n", recp);
 122                 free_recipients(valid);
 123                 return SIEVE2_ERROR_BADARGS;
 124         }
 125
 126         msg = CtdlFetchMessage(cs->msgnum, 1);
 127         if (msg == NULL) {
 128                 CtdlLogPrintf(CTDL_WARNING, "REDIRECT failed: unable to fetch msg %ld\n", cs->msgnum);
 129                 free_recipients(valid);
 130                 return SIEVE2_ERROR_BADARGS;
 131         }
 132
 133         CtdlSubmitMsg(msg, valid, NULL, 0);
 134         cs->cancel_implicit_keep = 1;
 135         free_recipients(valid);
 136         CtdlFreeMessage(msg);
 137         return SIEVE2_OK;
 138 }
 139
 140
 141 /*
 142  * Callback function to indicate that a message *will* be kept in the inbox
 143  */
 144 int ctdl_keep(sieve2_context_t *s, void *my)
 145 {
 146         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 147
 148         CtdlLogPrintf(CTDL_DEBUG, "Action is KEEP\n");
 149
 150         cs->keep = 1;
 151         cs->cancel_implicit_keep = 1;
 152         return SIEVE2_OK;
 153 }
 154
 155
 156 /*
 157  * Callback function to file a message into a different mailbox
 158  */
 159 int ctdl_fileinto(sieve2_context_t *s, void *my)
 160 {
 161         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 162         const char *dest_folder = sieve2_getvalue_string(s, "mailbox");
 163         int c;
 164         char foldername[256];
 165         char original_room_name[ROOMNAMELEN];
 166
 167         CtdlLogPrintf(CTDL_DEBUG, "Action is FILEINTO, destination is <%s>\n", dest_folder);
 168
 169         /* FILEINTO 'INBOX' is the same thing as KEEP */
 170         if ( (!strcasecmp(dest_folder, "INBOX")) || (!strcasecmp(dest_folder, MAILROOM)) ) {
 171                 cs->keep = 1;
 172                 cs->cancel_implicit_keep = 1;
 173                 return SIEVE2_OK;
 174         }
 175
 176         /* Remember what room we came from */
 177         safestrncpy(original_room_name, CC->room.QRname, sizeof original_room_name);
 178
 179         /* First try a mailbox name match (check personal mail folders first) */
 180         snprintf(foldername, sizeof foldername, "%010ld.%s", cs->usernum, dest_folder);
 181         c = getroom(&CC->room, foldername);
 182
 183         /* Then a regular room name match (public and private rooms) */
 184         if (c != 0) {
 185                 safestrncpy(foldername, dest_folder, sizeof foldername);
 186                 c = getroom(&CC->room, foldername);
 187         }
 188
 189         if (c != 0) {
 190                 CtdlLogPrintf(CTDL_WARNING, "FILEINTO failed: target <%s> does not exist\n", dest_folder);
 191                 return SIEVE2_ERROR_BADARGS;
 192         }
 193
 194         /* Yes, we actually have to go there */
 195         usergoto(NULL, 0, 0, NULL, NULL);
 196
 197         c = CtdlSaveMsgPointersInRoom(NULL, &cs->msgnum, 1, 0, NULL);
 198
 199         /* Go back to the room we came from */
 200         if (strcasecmp(original_room_name, CC->room.QRname)) {
 201                 usergoto(original_room_name, 0, 0, NULL, NULL);
 202         }
 203
 204         if (c == 0) {
 205                 cs->cancel_implicit_keep = 1;
 206                 return SIEVE2_OK;
 207         }
 208         else {
 209                 return SIEVE2_ERROR_BADARGS;
 210         }
 211 }
 212
 213
 214 /*
 215  * Callback function to indicate that a message should be discarded.
 216  */
 217 int ctdl_discard(sieve2_context_t *s, void *my)
 218 {
 219         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 220
 221         CtdlLogPrintf(CTDL_DEBUG, "Action is DISCARD\n");
 222
 223         /* Cancel the implicit keep.  That's all there is to it. */
 224         cs->cancel_implicit_keep = 1;
 225         return SIEVE2_OK;
 226 }
 227
 228
 229
 230 /*
 231  * Callback function to indicate that a message should be rejected
 232  */
 233 int ctdl_reject(sieve2_context_t *s, void *my)
 234 {
 235         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 236         char *reject_text = NULL;
 237
 238         CtdlLogPrintf(CTDL_DEBUG, "Action is REJECT\n");
 239
 240         /* If we don't know who sent the message, do a DISCARD instead. */
 241         if (IsEmptyStr(cs->sender)) {
 242                 CtdlLogPrintf(CTDL_INFO, "Unknown sender.  Doing DISCARD instead of REJECT.\n");
 243                 return ctdl_discard(s, my);
 244         }
 245
 246         /* Assemble the reject message. */
 247         reject_text = malloc(strlen(sieve2_getvalue_string(s, "message")) + 1024);
 248         if (reject_text == NULL) {
 249                 return SIEVE2_ERROR_FAIL;
 250         }
 251
 252         sprintf(reject_text,
 253                 "Content-type: text/plain\n"
 254                 "\n"
 255                 "The message was refused by the recipient's mail filtering program.\n"
 256                 "The reason given was as follows:\n"
 257                 "\n"
 258                 "%s\n"
 259                 "\n"
 260         ,
 261                 sieve2_getvalue_string(s, "message")
 262         );
 263
 264         quickie_message(        /* This delivers the message */
 265                 NULL,
 266                 cs->envelope_to,
 267                 cs->sender,
 268                 NULL,
 269                 reject_text,
 270                 FMT_RFC822,
 271                 "Delivery status notification"
 272         );
 273
 274         free(reject_text);
 275         cs->cancel_implicit_keep = 1;
 276         return SIEVE2_OK;
 277 }
 278
 279
 280
 281 /*
 282  * Callback function to indicate that a vacation message should be generated
 283  */
 284 int ctdl_vacation(sieve2_context_t *s, void *my)
 285 {
 286         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 287         struct sdm_vacation *vptr;
 288         int days = 1;
 289         const char *message;
 290         char *vacamsg_text = NULL;
 291         char vacamsg_subject[1024];
 292
 293         CtdlLogPrintf(CTDL_DEBUG, "Action is VACATION\n");
 294
 295         message = sieve2_getvalue_string(s, "message");
 296         if (message == NULL) return SIEVE2_ERROR_BADARGS;
 297
 298         if (sieve2_getvalue_string(s, "subject") != NULL) {
 299                 safestrncpy(vacamsg_subject, sieve2_getvalue_string(s, "subject"), sizeof vacamsg_subject);
 300         }
 301         else {
 302                 snprintf(vacamsg_subject, sizeof vacamsg_subject, "Re: %s", cs->subject);
 303         }
 304
 305         days = sieve2_getvalue_int(s, "days");
 306         if (days < 1) days = 1;
 307         if (days > MAX_VACATION) days = MAX_VACATION;
 308
 309         /* Check to see whether we've already alerted this sender that we're on vacation. */
 310         for (vptr = cs->u->first_vacation; vptr != NULL; vptr = vptr->next) {
 311                 if (!strcasecmp(vptr->fromaddr, cs->sender)) {
 312                         if ( (time(NULL) - vptr->timestamp) < (days * 86400) ) {
 313                                 CtdlLogPrintf(CTDL_DEBUG, "Already alerted <%s> recently.\n", cs->sender);
 314                                 return SIEVE2_OK;
 315                         }
 316                 }
 317         }
 318
 319         /* Assemble the reject message. */
 320         vacamsg_text = malloc(strlen(message) + 1024);
 321         if (vacamsg_text == NULL) {
 322                 return SIEVE2_ERROR_FAIL;
 323         }
 324
 325         sprintf(vacamsg_text,
 326                 "Content-type: text/plain\n"
 327                 "\n"
 328                 "%s\n"
 329                 "\n"
 330         ,
 331                 message
 332         );
 333
 334         quickie_message(        /* This delivers the message */
 335                 NULL,
 336                 cs->envelope_to,
 337                 cs->sender,
 338                 NULL,
 339                 vacamsg_text,
 340                 FMT_RFC822,
 341                 vacamsg_subject
 342         );
 343
 344         free(vacamsg_text);
 345
 346         /* Now update the list to reflect the fact that we've alerted this sender.
 347          * If they're already in the list, just update the timestamp.
 348          */
 349         for (vptr = cs->u->first_vacation; vptr != NULL; vptr = vptr->next) {
 350                 if (!strcasecmp(vptr->fromaddr, cs->sender)) {
 351                         vptr->timestamp = time(NULL);
 352                         return SIEVE2_OK;
 353                 }
 354         }
 355
 356         /* If we get to this point, create a new record.
 357          */
 358         vptr = malloc(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         char *text;
 766         struct sdm_script *sptr;
 767         struct sdm_vacation *vptr;
 768         size_t tsize;
 769
 770         text = malloc(1024);
 771         tsize = 1024;
 772         snprintf(text, 1024,
 773                 "Content-type: application/x-citadel-sieve-config\n"
 774                 "\n"
 775                 CTDLSIEVECONFIGSEPARATOR
 776                 "lastproc|%ld"
 777                 CTDLSIEVECONFIGSEPARATOR
 778         ,
 779                 u->lastproc
 780         );
 781
 782         while (u->first_script != NULL) {
 783                 size_t tlen;
 784                 tlen = strlen(text);
 785                 tsize = tlen + strlen(u->first_script->script_content) +256;
 786                 text = realloc(text, tsize);
 787                 sprintf(&text[strlen(text)], "script|%s|%d|%s" CTDLSIEVECONFIGSEPARATOR,
 788                         u->first_script->script_name,
 789                         u->first_script->script_active,
 790                         u->first_script->script_content
 791                 );
 792                 sptr = u->first_script;
 793                 u->first_script = u->first_script->next;
 794                 free(sptr->script_content);
 795                 free(sptr);
 796         }
 797
 798         if (u->first_vacation != NULL) {
 799
 800                 tsize = strlen(text) + 256;
 801                 for (vptr = u->first_vacation; vptr != NULL; vptr = vptr->next) {
 802                         tsize += strlen(vptr->fromaddr + 32);
 803                 }
 804                 text = realloc(text, tsize);
 805
 806                 sprintf(&text[strlen(text)], "vacation|\n");
 807                 while (u->first_vacation != NULL) {
 808                         if ( (time(NULL) - u->first_vacation->timestamp) < (MAX_VACATION * 86400)) {
 809                                 sprintf(&text[strlen(text)], "%s|%ld\n",
 810                                         u->first_vacation->fromaddr,
 811                                         u->first_vacation->timestamp
 812                                 );
 813                         }
 814                         vptr = u->first_vacation;
 815                         u->first_vacation = u->first_vacation->next;
 816                         free(vptr);
 817                 }
 818                 sprintf(&text[strlen(text)], CTDLSIEVECONFIGSEPARATOR);
 819         }
 820
 821         if (yes_write_to_disk)
 822         {
 823                 /* Save the config */
 824                 quickie_message("Citadel", NULL, NULL, u->config_roomname,
 825                                 text,
 826                                 4,
 827                                 "Sieve configuration"
 828                 );
 829
 830                 /* And delete the old one */
 831                 if (u->config_msgnum > 0) {
 832                         CtdlDeleteMessages(u->config_roomname, &u->config_msgnum, 1, "");
 833                 }
 834         }
 835
 836         free (text);
 837
 838 }
 839
 840
 841 /*
 842  * This is our callback registration table for libSieve.
 843  */
 844 sieve2_callback_t ctdl_sieve_callbacks[] = {
 845         { SIEVE2_ACTION_REJECT,         ctdl_reject             },
 846         { SIEVE2_ACTION_VACATION,       ctdl_vacation           },
 847         { SIEVE2_ERRCALL_PARSE,         ctdl_errparse           },
 848         { SIEVE2_ERRCALL_RUNTIME,       ctdl_errexec            },
 849         { SIEVE2_ACTION_FILEINTO,       ctdl_fileinto           },
 850         { SIEVE2_ACTION_REDIRECT,       ctdl_redirect           },
 851         { SIEVE2_ACTION_DISCARD,        ctdl_discard            },
 852         { SIEVE2_ACTION_KEEP,           ctdl_keep               },
 853         { SIEVE2_SCRIPT_GETSCRIPT,      ctdl_getscript          },
 854         { SIEVE2_DEBUG_TRACE,           ctdl_debug              },
 855         { SIEVE2_MESSAGE_GETALLHEADERS, ctdl_getheaders         },
 856         { SIEVE2_MESSAGE_GETSIZE,       ctdl_getsize            },
 857         { SIEVE2_MESSAGE_GETENVELOPE,   ctdl_getenvelope        },
 858 /*
 859  * These actions are unsupported by Citadel so we don't declare them.
 860  *
 861         { SIEVE2_ACTION_NOTIFY,         ctdl_notify             },
 862         { SIEVE2_MESSAGE_GETSUBADDRESS, ctdl_getsubaddress      },
 863         { SIEVE2_MESSAGE_GETBODY,       ctdl_getbody            },
 864  *
 865  */
 866         { 0 }
 867 };
 868
 869
 870 /*
 871  * Perform sieve processing for a single room
 872  */
 873 void sieve_do_room(char *roomname) {
 874
 875         struct sdm_userdata u;
 876         sieve2_context_t *sieve2_context = NULL;        /* Context for sieve parser */
 877         int res;                                        /* Return code from libsieve calls */
 878         long orig_lastproc = 0;
 879
 880         memset(&u, 0, sizeof u);
 881
 882         /* See if the user who owns this 'mailbox' has any Sieve scripts that
 883          * require execution.
 884          */
 885         snprintf(u.config_roomname, sizeof u.config_roomname, "%010ld.%s", atol(roomname), USERCONFIGROOM);
 886         if (getroom(&CC->room, u.config_roomname) != 0) {
 887                 CtdlLogPrintf(CTDL_DEBUG, "<%s> does not exist.  No processing is required.\n", u.config_roomname);
 888                 return;
 889         }
 890
 891         /*
 892          * Find the sieve scripts and control record and do something
 893          */
 894         u.config_msgnum = (-1);
 895         CtdlForEachMessage(MSGS_LAST, 1, NULL, SIEVECONFIG, NULL,
 896                 get_sieve_config_backend, (void *)&u );
 897
 898         if (u.config_msgnum < 0) {
 899                 CtdlLogPrintf(CTDL_DEBUG, "No Sieve rules exist.  No processing is required.\n");
 900                 return;
 901         }
 902
 903         CtdlLogPrintf(CTDL_DEBUG, "Rules found.  Performing Sieve processing for <%s>\n", roomname);
 904
 905         if (getroom(&CC->room, roomname) != 0) {
 906                 CtdlLogPrintf(CTDL_CRIT, "ERROR: cannot load <%s>\n", roomname);
 907                 return;
 908         }
 909
 910         /* Initialize the Sieve parser */
 911
 912         res = sieve2_alloc(&sieve2_context);
 913         if (res != SIEVE2_OK) {
 914                 CtdlLogPrintf(CTDL_CRIT, "sieve2_alloc() returned %d: %s\n", res, sieve2_errstr(res));
 915                 return;
 916         }
 917
 918         res = sieve2_callbacks(sieve2_context, ctdl_sieve_callbacks);
 919         if (res != SIEVE2_OK) {
 920                 CtdlLogPrintf(CTDL_CRIT, "sieve2_callbacks() returned %d: %s\n", res, sieve2_errstr(res));
 921                 goto BAIL;
 922         }
 923
 924         /* Validate the script */
 925
 926         struct ctdl_sieve my;           /* dummy ctdl_sieve struct just to pass "u" slong */
 927         memset(&my, 0, sizeof my);
 928         my.u = &u;
 929         res = sieve2_validate(sieve2_context, &my);
 930         if (res != SIEVE2_OK) {
 931                 CtdlLogPrintf(CTDL_CRIT, "sieve2_validate() returned %d: %s\n", res, sieve2_errstr(res));
 932                 goto BAIL;
 933         }
 934
 935         /* Do something useful */
 936         u.sieve2_context = sieve2_context;
 937         orig_lastproc = u.lastproc;
 938         CtdlForEachMessage(MSGS_GT, u.lastproc, NULL, NULL, NULL,
 939                 sieve_do_msg,
 940                 (void *) &u
 941         );
 942
 943 BAIL:
 944         res = sieve2_free(&sieve2_context);
 945         if (res != SIEVE2_OK) {
 946                 CtdlLogPrintf(CTDL_CRIT, "sieve2_free() returned %d: %s\n", res, sieve2_errstr(res));
 947         }
 948
 949         /* Rewrite the config if we have to */
 950         rewrite_ctdl_sieve_config(&u, (u.lastproc > orig_lastproc) ) ;
 951 }
 952
 953
 954 /*
 955  * Perform sieve processing for all rooms which require it
 956  */
 957 void perform_sieve_processing(void) {
 958         struct RoomProcList *ptr = NULL;
 959
 960         if (sieve_list != NULL) {
 961                 CtdlLogPrintf(CTDL_DEBUG, "Begin Sieve processing\n");
 962                 while (sieve_list != NULL) {
 963                         char spoolroomname[ROOMNAMELEN];
 964                         safestrncpy(spoolroomname, sieve_list->name, sizeof spoolroomname);
 965                         begin_critical_section(S_SIEVELIST);
 966
 967                         /* pop this record off the list */
 968                         ptr = sieve_list;
 969                         sieve_list = sieve_list->next;
 970                         free(ptr);
 971
 972                         /* invalidate any duplicate entries to prevent double processing */
 973                         for (ptr=sieve_list; ptr!=NULL; ptr=ptr->next) {
 974                                 if (!strcasecmp(ptr->name, spoolroomname)) {
 975                                         ptr->name[0] = 0;
 976                                 }
 977                         }
 978
 979                         end_critical_section(S_SIEVELIST);
 980                         if (spoolroomname[0] != 0) {
 981                                 sieve_do_room(spoolroomname);
 982                         }
 983                 }
 984         }
 985 }
 986
 987
 988 void msiv_load(struct sdm_userdata *u) {
 989         char hold_rm[ROOMNAMELEN];
 990
 991         strcpy(hold_rm, CC->room.QRname);       /* save current room */
 992
 993         /* Take a spin through the user's personal address book */
 994         if (getroom(&CC->room, USERCONFIGROOM) == 0) {
 995
 996                 u->config_msgnum = (-1);
 997                 strcpy(u->config_roomname, CC->room.QRname);
 998                 CtdlForEachMessage(MSGS_LAST, 1, NULL, SIEVECONFIG, NULL,
 999                         get_sieve_config_backend, (void *)u );
1000
1001         }
1002
1003         if (strcmp(CC->room.QRname, hold_rm)) {
1004                 getroom(&CC->room, hold_rm);    /* return to saved room */
1005         }
1006 }
1007
1008 void msiv_store(struct sdm_userdata *u, int yes_write_to_disk) {
1009 /*
1010  * Initialise the sieve configs last processed message number.
1011  * We don't need to get the highest message number for the users inbox since the systems
1012  * highest message number will be higher than that and loer than this scripts message number
1013  * This prevents this new script from processing any old messages in the inbox.
1014  * Most importantly it will prevent vacation messages being sent to lots of old messages
1015  * in the inbox.
1016  */
1017         u->lastproc = CtdlGetCurrentMessageNumber();
1018         rewrite_ctdl_sieve_config(u, yes_write_to_disk);
1019 }
1020
1021
1022 /*
1023  * Select the active script.
1024  * (Set script_name to an empty string to disable all scripts)
1025  *
1026  * Returns 0 on success or nonzero for error.
1027  */
1028 int msiv_setactive(struct sdm_userdata *u, char *script_name) {
1029         int ok = 0;
1030         struct sdm_script *s;
1031
1032         /* First see if the supplied value is ok */
1033
1034         if (IsEmptyStr(script_name)) {
1035                 ok = 1;
1036         }
1037         else {
1038                 for (s=u->first_script; s!=NULL; s=s->next) {
1039                         if (!strcasecmp(s->script_name, script_name)) {
1040                                 ok = 1;
1041                         }
1042                 }
1043         }
1044
1045         if (!ok) return(-1);
1046
1047         /* Now set the active script */
1048         for (s=u->first_script; s!=NULL; s=s->next) {
1049                 if (!strcasecmp(s->script_name, script_name)) {
1050                         s->script_active = 1;
1051                 }
1052                 else {
1053                         s->script_active = 0;
1054                 }
1055         }
1056
1057         return(0);
1058 }
1059
1060
1061 /*
1062  * Fetch a script by name.
1063  *
1064  * Returns NULL if the named script was not found, or a pointer to the script
1065  * if it was found.   NOTE: the caller does *not* own the memory returned by
1066  * this function.  Copy it if you need to keep it.
1067  */
1068 char *msiv_getscript(struct sdm_userdata *u, char *script_name) {
1069         struct sdm_script *s;
1070
1071         for (s=u->first_script; s!=NULL; s=s->next) {
1072                 if (!strcasecmp(s->script_name, script_name)) {
1073                         if (s->script_content != NULL) {
1074                                 return (s->script_content);
1075                         }
1076                 }
1077         }
1078
1079         return(NULL);
1080 }
1081
1082
1083 /*
1084  * Delete a script by name.
1085  *
1086  * Returns 0 if the script was deleted.
1087  *       1 if the script was not found.
1088  *       2 if the script cannot be deleted because it is active.
1089  */
1090 int msiv_deletescript(struct sdm_userdata *u, char *script_name) {
1091         struct sdm_script *s = NULL;
1092         struct sdm_script *script_to_delete = NULL;
1093
1094         for (s=u->first_script; s!=NULL; s=s->next) {
1095                 if (!strcasecmp(s->script_name, script_name)) {
1096                         script_to_delete = s;
1097                         if (s->script_active) {
1098                                 return(2);
1099                         }
1100                 }
1101         }
1102
1103         if (script_to_delete == NULL) return(1);
1104
1105         if (u->first_script == script_to_delete) {
1106                 u->first_script = u->first_script->next;
1107         }
1108         else for (s=u->first_script; s!=NULL; s=s->next) {
1109                 if (s->next == script_to_delete) {
1110                         s->next = s->next->next;
1111                 }
1112         }
1113
1114         free(script_to_delete->script_content);
1115         free(script_to_delete);
1116         return(0);
1117 }
1118
1119
1120 /*
1121  * Add or replace a new script.
1122  * NOTE: after this function returns, "u" owns the memory that "script_content"
1123  * was pointing to.
1124  */
1125 void msiv_putscript(struct sdm_userdata *u, char *script_name, char *script_content) {
1126         int replaced = 0;
1127         struct sdm_script *s, *sptr;
1128
1129         for (s=u->first_script; s!=NULL; s=s->next) {
1130                 if (!strcasecmp(s->script_name, script_name)) {
1131                         if (s->script_content != NULL) {
1132                                 free(s->script_content);
1133                         }
1134                         s->script_content = script_content;
1135                         replaced = 1;
1136                 }
1137         }
1138
1139         if (replaced == 0) {
1140                 sptr = malloc(sizeof(struct sdm_script));
1141                 safestrncpy(sptr->script_name, script_name, sizeof sptr->script_name);
1142                 sptr->script_content = script_content;
1143                 sptr->script_active = 0;
1144                 sptr->next = u->first_script;
1145                 u->first_script = sptr;
1146         }
1147 }
1148
1149
1150
1151 /*
1152  * Citadel protocol to manage sieve scripts.
1153  * This is basically a simplified (read: doesn't resemble IMAP) version
1154  * of the 'managesieve' protocol.
1155  */
1156 void cmd_msiv(char *argbuf) {
1157         char subcmd[256];
1158         struct sdm_userdata u;
1159         char script_name[256];
1160         char *script_content = NULL;
1161         struct sdm_script *s;
1162         int i;
1163         int changes_made = 0;
1164
1165         memset(&u, 0, sizeof(struct sdm_userdata));
1166
1167         if (CtdlAccessCheck(ac_logged_in)) return;
1168         extract_token(subcmd, argbuf, 0, '|', sizeof subcmd);
1169         msiv_load(&u);
1170
1171         if (!strcasecmp(subcmd, "putscript")) {
1172                 extract_token(script_name, argbuf, 1, '|', sizeof script_name);
1173                 if (!IsEmptyStr(script_name)) {
1174                         cprintf("%d Transmit script now\n", SEND_LISTING);
1175                         script_content = CtdlReadMessageBody("000", config.c_maxmsglen, NULL, 0, 0);
1176                         msiv_putscript(&u, script_name, script_content);
1177                         changes_made = 1;
1178                 }
1179                 else {
1180                         cprintf("%d Invalid script name.\n", ERROR + ILLEGAL_VALUE);
1181                 }
1182         }
1183
1184         else if (!strcasecmp(subcmd, "listscripts")) {
1185                 cprintf("%d Scripts:\n", LISTING_FOLLOWS);
1186                 for (s=u.first_script; s!=NULL; s=s->next) {
1187                         if (s->script_content != NULL) {
1188                                 cprintf("%s|%d|\n", s->script_name, s->script_active);
1189                         }
1190                 }
1191                 cprintf("000\n");
1192         }
1193
1194         else if (!strcasecmp(subcmd, "setactive")) {
1195                 extract_token(script_name, argbuf, 1, '|', sizeof script_name);
1196                 if (msiv_setactive(&u, script_name) == 0) {
1197                         cprintf("%d ok\n", CIT_OK);
1198                         changes_made = 1;
1199                 }
1200                 else {
1201                         cprintf("%d Script '%s' does not exist.\n",
1202                                 ERROR + ILLEGAL_VALUE,
1203                                 script_name
1204                         );
1205                 }
1206         }
1207
1208         else if (!strcasecmp(subcmd, "getscript")) {
1209                 extract_token(script_name, argbuf, 1, '|', sizeof script_name);
1210                 script_content = msiv_getscript(&u, script_name);
1211                 if (script_content != NULL) {
1212                         int script_len;
1213
1214                         cprintf("%d Script:\n", LISTING_FOLLOWS);
1215                         script_len = strlen(script_content);
1216                         client_write(script_content, script_len);
1217                         if (script_content[script_len-1] != '\n') {
1218                                 cprintf("\n");
1219                         }
1220                         cprintf("000\n");
1221                 }
1222                 else {
1223                         cprintf("%d Invalid script name.\n", ERROR + ILLEGAL_VALUE);
1224                 }
1225         }
1226
1227         else if (!strcasecmp(subcmd, "deletescript")) {
1228                 extract_token(script_name, argbuf, 1, '|', sizeof script_name);
1229                 i = msiv_deletescript(&u, script_name);
1230                 if (i == 0) {
1231                         cprintf("%d ok\n", CIT_OK);
1232                         changes_made = 1;
1233                 }
1234                 else if (i == 1) {
1235                         cprintf("%d Script '%s' does not exist.\n",
1236                                 ERROR + ILLEGAL_VALUE,
1237                                 script_name
1238                         );
1239                 }
1240                 else if (i == 2) {
1241                         cprintf("%d Script '%s' is active and cannot be deleted.\n",
1242                                 ERROR + ILLEGAL_VALUE,
1243                                 script_name
1244                         );
1245                 }
1246                 else {
1247                         cprintf("%d unknown error\n", ERROR);
1248                 }
1249         }
1250
1251         else {
1252                 cprintf("%d Invalid subcommand\n", ERROR + CMD_NOT_SUPPORTED);
1253         }
1254
1255         msiv_store(&u, changes_made);
1256 }
1257
1258
1259
1260 void ctdl_sieve_init(void) {
1261         char *cred = NULL;
1262         sieve2_context_t *sieve2_context = NULL;
1263         int res;
1264
1265         /*
1266          *      We don't really care about dumping the entire credits to the log
1267          *      every time the server is initialized.  The documentation will suffice
1268          *      for that purpose.  We are making a call to sieve2_credits() in order
1269          *      to demonstrate that we have successfully linked in to libsieve.
1270          */
1271         cred = strdup(sieve2_credits());
1272         if (cred == NULL) return;
1273
1274         if (strlen(cred) > 60) {
1275                 strcpy(&cred[55], "...");
1276         }
1277
1278         CtdlLogPrintf(CTDL_INFO, "%s\n",cred);
1279         free(cred);
1280
1281         /* Briefly initialize a Sieve parser instance just so we can list the
1282          * extensions that are available.
1283          */
1284         res = sieve2_alloc(&sieve2_context);
1285         if (res != SIEVE2_OK) {
1286                 CtdlLogPrintf(CTDL_CRIT, "sieve2_alloc() returned %d: %s\n", res, sieve2_errstr(res));
1287                 return;
1288         }
1289
1290         res = sieve2_callbacks(sieve2_context, ctdl_sieve_callbacks);
1291         if (res != SIEVE2_OK) {
1292                 CtdlLogPrintf(CTDL_CRIT, "sieve2_callbacks() returned %d: %s\n", res, sieve2_errstr(res));
1293                 goto BAIL;
1294         }
1295
1296         msiv_extensions = strdup(sieve2_listextensions(sieve2_context));
1297         CtdlLogPrintf(CTDL_INFO, "Extensions: %s\n", msiv_extensions);
1298
1299 BAIL:   res = sieve2_free(&sieve2_context);
1300         if (res != SIEVE2_OK) {
1301                 CtdlLogPrintf(CTDL_CRIT, "sieve2_free() returned %d: %s\n", res, sieve2_errstr(res));
1302         }
1303
1304 }
1305
1306 int serv_sieve_room(struct ctdlroom *room)
1307 {
1308         if (!strcasecmp(&room->QRname[11], MAILROOM)) {
1309                 sieve_queue_room(room);
1310         }
1311         return 0;
1312 }
1313
1314 CTDL_MODULE_INIT(sieve)
1315 {
1316         if (!threading)
1317         {
1318
1319                 ctdl_sieve_init();
1320                 CtdlRegisterProtoHook(cmd_msiv, "MSIV", "Manage Sieve scripts");
1321                 CtdlRegisterRoomHook(serv_sieve_room);
1322                 CtdlRegisterSessionHook(perform_sieve_processing, EVT_HOUSE);
1323         }
1324
1325         /* return our Subversion id for the Log */
1326         return "$Id$";
1327 }
1328