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  * This code is released under the terms of the GNU General Public License.
   8  */
   9
  10 #include "sysdep.h"
  11 #include <stdlib.h>
  12 #include <unistd.h>
  13 #include <stdio.h>
  14 #include <fcntl.h>
  15 #include <ctype.h>
  16 #include <pwd.h>
  17 #include <errno.h>
  18 #include <sys/types.h>
  19
  20 #if TIME_WITH_SYS_TIME
  21 # include <sys/time.h>
  22 # include <time.h>
  23 #else
  24 # if HAVE_SYS_TIME_H
  25 #  include <sys/time.h>
  26 # else
  27 #  include <time.h>
  28 # endif
  29 #endif
  30
  31 #include <sys/wait.h>
  32 #include <string.h>
  33 #include <limits.h>
  34 #include <libcitadel.h>
  35 #include "citadel.h"
  36 #include "server.h"
  37 #include "citserver.h"
  38 #include "support.h"
  39 #include "config.h"
  40 #include "room_ops.h"
  41 #include "policy.h"
  42 #include "database.h"
  43 #include "msgbase.h"
  44 #include "internet_addressing.h"
  45 #include "ctdl_module.h"
  46 #include "serv_sieve.h"
  47
  48 struct RoomProcList *sieve_list = NULL;
  49 char *msiv_extensions = NULL;
  50
  51
  52 /*
  53  * Callback function to send libSieve trace messages to Citadel log facility
  54  */
  55 int ctdl_debug(sieve2_context_t *s, void *my)
  56 {
  57         CtdlLogPrintf(CTDL_DEBUG, "Sieve: %s\n", sieve2_getvalue_string(s, "message"));
  58         return SIEVE2_OK;
  59 }
  60
  61
  62 /*
  63  * Callback function to log script parsing errors
  64  */
  65 int ctdl_errparse(sieve2_context_t *s, void *my)
  66 {
  67         CtdlLogPrintf(CTDL_WARNING, "Error in script, line %d: %s\n",
  68                 sieve2_getvalue_int(s, "lineno"),
  69                 sieve2_getvalue_string(s, "message")
  70         );
  71         return SIEVE2_OK;
  72 }
  73
  74
  75 /*
  76  * Callback function to log script execution errors
  77  */
  78 int ctdl_errexec(sieve2_context_t *s, void *my)
  79 {
  80         CtdlLogPrintf(CTDL_WARNING, "Error executing script: %s\n",
  81                 sieve2_getvalue_string(s, "message")
  82         );
  83         return SIEVE2_OK;
  84 }
  85
  86
  87 /*
  88  * Callback function to redirect a message to a different folder
  89  */
  90 int ctdl_redirect(sieve2_context_t *s, void *my)
  91 {
  92         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
  93         struct CtdlMessage *msg = NULL;
  94         struct recptypes *valid = NULL;
  95         char recp[256];
  96
  97         safestrncpy(recp, sieve2_getvalue_string(s, "address"), sizeof recp);
  98
  99         CtdlLogPrintf(CTDL_DEBUG, "Action is REDIRECT, recipient <%s>\n", recp);
 100
 101         valid = validate_recipients(recp, NULL, 0);
 102         if (valid == NULL) {
 103                 CtdlLogPrintf(CTDL_WARNING, "REDIRECT failed: bad recipient <%s>\n", recp);
 104                 return SIEVE2_ERROR_BADARGS;
 105         }
 106         if (valid->num_error > 0) {
 107                 CtdlLogPrintf(CTDL_WARNING, "REDIRECT failed: bad recipient <%s>\n", recp);
 108                 free_recipients(valid);
 109                 return SIEVE2_ERROR_BADARGS;
 110         }
 111
 112         msg = CtdlFetchMessage(cs->msgnum, 1);
 113         if (msg == NULL) {
 114                 CtdlLogPrintf(CTDL_WARNING, "REDIRECT failed: unable to fetch msg %ld\n", cs->msgnum);
 115                 free_recipients(valid);
 116                 return SIEVE2_ERROR_BADARGS;
 117         }
 118
 119         CtdlSubmitMsg(msg, valid, NULL, 0);
 120         cs->cancel_implicit_keep = 1;
 121         free_recipients(valid);
 122         CtdlFreeMessage(msg);
 123         return SIEVE2_OK;
 124 }
 125
 126
 127 /*
 128  * Callback function to indicate that a message *will* be kept in the inbox
 129  */
 130 int ctdl_keep(sieve2_context_t *s, void *my)
 131 {
 132         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 133
 134         CtdlLogPrintf(CTDL_DEBUG, "Action is KEEP\n");
 135
 136         cs->keep = 1;
 137         cs->cancel_implicit_keep = 1;
 138         return SIEVE2_OK;
 139 }
 140
 141
 142 /*
 143  * Callback function to file a message into a different mailbox
 144  */
 145 int ctdl_fileinto(sieve2_context_t *s, void *my)
 146 {
 147         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 148         const char *dest_folder = sieve2_getvalue_string(s, "mailbox");
 149         int c;
 150         char foldername[256];
 151         char original_room_name[ROOMNAMELEN];
 152
 153         CtdlLogPrintf(CTDL_DEBUG, "Action is FILEINTO, destination is <%s>\n", dest_folder);
 154
 155         /* FILEINTO 'INBOX' is the same thing as KEEP */
 156         if ( (!strcasecmp(dest_folder, "INBOX")) || (!strcasecmp(dest_folder, MAILROOM)) ) {
 157                 cs->keep = 1;
 158                 cs->cancel_implicit_keep = 1;
 159                 return SIEVE2_OK;
 160         }
 161
 162         /* Remember what room we came from */
 163         safestrncpy(original_room_name, CC->room.QRname, sizeof original_room_name);
 164
 165         /* First try a mailbox name match (check personal mail folders first) */
 166         snprintf(foldername, sizeof foldername, "%010ld.%s", cs->usernum, dest_folder);
 167         c = getroom(&CC->room, foldername);
 168
 169         /* Then a regular room name match (public and private rooms) */
 170         if (c != 0) {
 171                 safestrncpy(foldername, dest_folder, sizeof foldername);
 172                 c = getroom(&CC->room, foldername);
 173         }
 174
 175         if (c != 0) {
 176                 CtdlLogPrintf(CTDL_WARNING, "FILEINTO failed: target <%s> does not exist\n", dest_folder);
 177                 return SIEVE2_ERROR_BADARGS;
 178         }
 179
 180         /* Yes, we actually have to go there */
 181         usergoto(NULL, 0, 0, NULL, NULL);
 182
 183         c = CtdlSaveMsgPointersInRoom(NULL, &cs->msgnum, 1, 0, NULL);
 184
 185         /* Go back to the room we came from */
 186         if (strcasecmp(original_room_name, CC->room.QRname)) {
 187                 usergoto(original_room_name, 0, 0, NULL, NULL);
 188         }
 189
 190         if (c == 0) {
 191                 cs->cancel_implicit_keep = 1;
 192                 return SIEVE2_OK;
 193         }
 194         else {
 195                 return SIEVE2_ERROR_BADARGS;
 196         }
 197 }
 198
 199
 200 /*
 201  * Callback function to indicate that a message should be discarded.
 202  */
 203 int ctdl_discard(sieve2_context_t *s, void *my)
 204 {
 205         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 206
 207         CtdlLogPrintf(CTDL_DEBUG, "Action is DISCARD\n");
 208
 209         /* Cancel the implicit keep.  That's all there is to it. */
 210         cs->cancel_implicit_keep = 1;
 211         return SIEVE2_OK;
 212 }
 213
 214
 215
 216 /*
 217  * Callback function to indicate that a message should be rejected
 218  */
 219 int ctdl_reject(sieve2_context_t *s, void *my)
 220 {
 221         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 222         char *reject_text = NULL;
 223
 224         CtdlLogPrintf(CTDL_DEBUG, "Action is REJECT\n");
 225
 226         /* If we don't know who sent the message, do a DISCARD instead. */
 227         if (IsEmptyStr(cs->sender)) {
 228                 CtdlLogPrintf(CTDL_INFO, "Unknown sender.  Doing DISCARD instead of REJECT.\n");
 229                 return ctdl_discard(s, my);
 230         }
 231
 232         /* Assemble the reject message. */
 233         reject_text = malloc(strlen(sieve2_getvalue_string(s, "message")) + 1024);
 234         if (reject_text == NULL) {
 235                 return SIEVE2_ERROR_FAIL;
 236         }
 237
 238         sprintf(reject_text,
 239                 "Content-type: text/plain\n"
 240                 "\n"
 241                 "The message was refused by the recipient's mail filtering program.\n"
 242                 "The reason given was as follows:\n"
 243                 "\n"
 244                 "%s\n"
 245                 "\n"
 246         ,
 247                 sieve2_getvalue_string(s, "message")
 248         );
 249
 250         quickie_message(        /* This delivers the message */
 251                 NULL,
 252                 cs->envelope_to,
 253                 cs->sender,
 254                 NULL,
 255                 reject_text,
 256                 FMT_RFC822,
 257                 "Delivery status notification"
 258         );
 259
 260         free(reject_text);
 261         cs->cancel_implicit_keep = 1;
 262         return SIEVE2_OK;
 263 }
 264
 265
 266
 267 /*
 268  * Callback function to indicate that a vacation message should be generated
 269  */
 270 int ctdl_vacation(sieve2_context_t *s, void *my)
 271 {
 272         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 273         struct sdm_vacation *vptr;
 274         int days = 1;
 275         const char *message;
 276         char *vacamsg_text = NULL;
 277         char vacamsg_subject[1024];
 278
 279         CtdlLogPrintf(CTDL_DEBUG, "Action is VACATION\n");
 280
 281         message = sieve2_getvalue_string(s, "message");
 282         if (message == NULL) return SIEVE2_ERROR_BADARGS;
 283
 284         if (sieve2_getvalue_string(s, "subject") != NULL) {
 285                 safestrncpy(vacamsg_subject, sieve2_getvalue_string(s, "subject"), sizeof vacamsg_subject);
 286         }
 287         else {
 288                 snprintf(vacamsg_subject, sizeof vacamsg_subject, "Re: %s", cs->subject);
 289         }
 290
 291         days = sieve2_getvalue_int(s, "days");
 292         if (days < 1) days = 1;
 293         if (days > MAX_VACATION) days = MAX_VACATION;
 294
 295         /* Check to see whether we've already alerted this sender that we're on vacation. */
 296         for (vptr = cs->u->first_vacation; vptr != NULL; vptr = vptr->next) {
 297                 if (!strcasecmp(vptr->fromaddr, cs->sender)) {
 298                         if ( (time(NULL) - vptr->timestamp) < (days * 86400) ) {
 299                                 CtdlLogPrintf(CTDL_DEBUG, "Already alerted <%s> recently.\n", cs->sender);
 300                                 return SIEVE2_OK;
 301                         }
 302                 }
 303         }
 304
 305         /* Assemble the reject message. */
 306         vacamsg_text = malloc(strlen(message) + 1024);
 307         if (vacamsg_text == NULL) {
 308                 return SIEVE2_ERROR_FAIL;
 309         }
 310
 311         sprintf(vacamsg_text,
 312                 "Content-type: text/plain\n"
 313                 "\n"
 314                 "%s\n"
 315                 "\n"
 316         ,
 317                 message
 318         );
 319
 320         quickie_message(        /* This delivers the message */
 321                 NULL,
 322                 cs->envelope_to,
 323                 cs->sender,
 324                 NULL,
 325                 vacamsg_text,
 326                 FMT_RFC822,
 327                 vacamsg_subject
 328         );
 329
 330         free(vacamsg_text);
 331
 332         /* Now update the list to reflect the fact that we've alerted this sender.
 333          * If they're already in the list, just update the timestamp.
 334          */
 335         for (vptr = cs->u->first_vacation; vptr != NULL; vptr = vptr->next) {
 336                 if (!strcasecmp(vptr->fromaddr, cs->sender)) {
 337                         vptr->timestamp = time(NULL);
 338                         return SIEVE2_OK;
 339                 }
 340         }
 341
 342         /* If we get to this point, create a new record.
 343          */
 344         vptr = malloc(sizeof(struct sdm_vacation));
 345         vptr->timestamp = time(NULL);
 346         safestrncpy(vptr->fromaddr, cs->sender, sizeof vptr->fromaddr);
 347         vptr->next = cs->u->first_vacation;
 348         cs->u->first_vacation = vptr;
 349
 350         return SIEVE2_OK;
 351 }
 352
 353
 354 /*
 355  * Callback function to parse addresses per local system convention
 356  * It is disabled because we don't support subaddresses.
 357  */
 358 #if 0
 359 int ctdl_getsubaddress(sieve2_context_t *s, void *my)
 360 {
 361         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 362
 363         /* libSieve does not take ownership of the memory used here.  But, since we
 364          * are just pointing to locations inside a struct which we are going to free
 365          * later, we're ok.
 366          */
 367         sieve2_setvalue_string(s, "user", cs->recp_user);
 368         sieve2_setvalue_string(s, "detail", "");
 369         sieve2_setvalue_string(s, "localpart", cs->recp_user);
 370         sieve2_setvalue_string(s, "domain", cs->recp_node);
 371         return SIEVE2_OK;
 372 }
 373 #endif
 374
 375
 376 /*
 377  * Callback function to parse message envelope
 378  */
 379 int ctdl_getenvelope(sieve2_context_t *s, void *my)
 380 {
 381         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 382
 383         CtdlLogPrintf(CTDL_DEBUG, "Action is GETENVELOPE\nEnvFrom: %s\n  EnvTo: %s\n",
 384                 cs->envelope_from, cs->envelope_to);
 385
 386         if (cs->envelope_from != NULL) {
 387                 if ((cs->envelope_from[0] != '@')&&(cs->envelope_from[strlen(cs->envelope_from)-1] != '@')) {
 388                         sieve2_setvalue_string(s, "from", cs->envelope_from);
 389                 }
 390                 else {
 391                         sieve2_setvalue_string(s, "from", "invalid_envelope_from@example.org");
 392                 }
 393         }
 394         else {
 395                 sieve2_setvalue_string(s, "from", "null_envelope_from@example.org");
 396         }
 397
 398
 399         if (cs->envelope_to != NULL) {
 400                 if ((cs->envelope_to[0] != '@') && (cs->envelope_to[strlen(cs->envelope_to)-1] != '@')) {
 401                         sieve2_setvalue_string(s, "to", cs->envelope_to);
 402                 }
 403                 else {
 404                         sieve2_setvalue_string(s, "to", "invalid_envelope_to@example.org");
 405                 }
 406         }
 407         else {
 408                 sieve2_setvalue_string(s, "to", "null_envelope_to@example.org");
 409         }
 410
 411         return SIEVE2_OK;
 412 }
 413
 414
 415 /*
 416  * Callback function to fetch message body
 417  * (Uncomment the code if we implement this extension)
 418  *
 419 int ctdl_getbody(sieve2_context_t *s, void *my)
 420 {
 421         return SIEVE2_ERROR_UNSUPPORTED;
 422 }
 423  *
 424  */
 425
 426
 427 /*
 428  * Callback function to fetch message size
 429  */
 430 int ctdl_getsize(sieve2_context_t *s, void *my)
 431 {
 432         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 433         struct MetaData smi;
 434
 435         GetMetaData(&smi, cs->msgnum);
 436
 437         if (smi.meta_rfc822_length > 0L) {
 438                 sieve2_setvalue_int(s, "size", (int)smi.meta_rfc822_length);
 439                 return SIEVE2_OK;
 440         }
 441
 442         return SIEVE2_ERROR_UNSUPPORTED;
 443 }
 444
 445
 446 /*
 447  * Callback function to retrieve the sieve script
 448  */
 449 int ctdl_getscript(sieve2_context_t *s, void *my) {
 450         struct sdm_script *sptr;
 451         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 452
 453         for (sptr=cs->u->first_script; sptr!=NULL; sptr=sptr->next) {
 454                 if (sptr->script_active > 0) {
 455                         CtdlLogPrintf(CTDL_DEBUG, "ctdl_getscript() is using script '%s'\n", sptr->script_name);
 456                         sieve2_setvalue_string(s, "script", sptr->script_content);
 457                         return SIEVE2_OK;
 458                 }
 459         }
 460
 461         CtdlLogPrintf(CTDL_DEBUG, "ctdl_getscript() found no active script\n");
 462         return SIEVE2_ERROR_GETSCRIPT;
 463 }
 464
 465 /*
 466  * Callback function to retrieve message headers
 467  */
 468 int ctdl_getheaders(sieve2_context_t *s, void *my) {
 469
 470         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 471
 472         CtdlLogPrintf(CTDL_DEBUG, "ctdl_getheaders() was called\n");
 473         sieve2_setvalue_string(s, "allheaders", cs->rfc822headers);
 474         return SIEVE2_OK;
 475 }
 476
 477
 478
 479 /*
 480  * Add a room to the list of those rooms which potentially require sieve processing
 481  */
 482 void sieve_queue_room(struct ctdlroom *which_room) {
 483         struct RoomProcList *ptr;
 484
 485         ptr = (struct RoomProcList *) malloc(sizeof (struct RoomProcList));
 486         if (ptr == NULL) return;
 487
 488         safestrncpy(ptr->name, which_room->QRname, sizeof ptr->name);
 489         begin_critical_section(S_SIEVELIST);
 490         ptr->next = sieve_list;
 491         sieve_list = ptr;
 492         end_critical_section(S_SIEVELIST);
 493         CtdlLogPrintf(CTDL_DEBUG, "<%s> queued for Sieve processing\n", which_room->QRname);
 494 }
 495
 496
 497
 498 /*
 499  * Perform sieve processing for one message (called by sieve_do_room() for each message)
 500  */
 501 void sieve_do_msg(long msgnum, void *userdata) {
 502         struct sdm_userdata *u = (struct sdm_userdata *) userdata;
 503         sieve2_context_t *sieve2_context;
 504         struct ctdl_sieve my;
 505         int res;
 506         struct CtdlMessage *msg;
 507         int i;
 508         size_t headers_len = 0;
 509         int len = 0;
 510
 511         if (u == NULL)
 512         {
 513                 CtdlLogPrintf(CTDL_EMERG, "Can't process message <%ld> without userdata!\n", msgnum);
 514                 return;
 515         }
 516
 517         sieve2_context = u->sieve2_context;
 518
 519         CtdlLogPrintf(CTDL_DEBUG, "Performing sieve processing on msg <%ld>\n", msgnum);
 520
 521         /*
 522          * Make sure you include message body so you can get those second-level headers ;)
 523          */
 524         msg = CtdlFetchMessage(msgnum, 1);
 525         if (msg == NULL) return;
 526
 527         /*
 528          * Grab the message headers so we can feed them to libSieve.
 529          * Use HEADERS_ONLY rather than HEADERS_FAST in order to include second-level headers.
 530          */
 531         CC->redirect_buffer = malloc(SIZ);
 532         CC->redirect_len = 0;
 533         CC->redirect_alloc = SIZ;
 534         CtdlOutputPreLoadedMsg(msg, MT_RFC822, HEADERS_ONLY, 0, 1, 0);
 535         my.rfc822headers = CC->redirect_buffer;
 536         headers_len = CC->redirect_len;
 537         CC->redirect_buffer = NULL;
 538         CC->redirect_len = 0;
 539         CC->redirect_alloc = 0;
 540
 541         /*
 542          * libSieve clobbers the stack if it encounters badly formed
 543          * headers.  Sanitize our headers by stripping nonprintable
 544          * characters.
 545          */
 546         for (i=0; i<headers_len; ++i) {
 547                 if (!isascii(my.rfc822headers[i])) {
 548                         my.rfc822headers[i] = '_';
 549                 }
 550         }
 551
 552         my.keep = 0;                            /* Set to 1 to declare an *explicit* keep */
 553         my.cancel_implicit_keep = 0;            /* Some actions will cancel the implicit keep */
 554         my.usernum = atol(CC->room.QRname);     /* Keep track of the owner of the room's namespace */
 555         my.msgnum = msgnum;                     /* Keep track of the message number in our local store */
 556         my.u = u;                               /* Hand off a pointer to the rest of this info */
 557
 558         /* Keep track of the recipient so we can do handling based on it later */
 559         process_rfc822_addr(msg->cm_fields['R'], my.recp_user, my.recp_node, my.recp_name);
 560
 561         /* Keep track of the sender so we can use it for REJECT and VACATION responses */
 562         if (msg->cm_fields['F'] != NULL) {
 563                 safestrncpy(my.sender, msg->cm_fields['F'], sizeof my.sender);
 564         }
 565         else if ( (msg->cm_fields['A'] != NULL) && (msg->cm_fields['N'] != NULL) ) {
 566                 snprintf(my.sender, sizeof my.sender, "%s@%s", msg->cm_fields['A'], msg->cm_fields['N']);
 567         }
 568         else if (msg->cm_fields['A'] != NULL) {
 569                 safestrncpy(my.sender, msg->cm_fields['A'], sizeof my.sender);
 570         }
 571         else {
 572                 strcpy(my.sender, "");
 573         }
 574
 575         /* Keep track of the subject so we can use it for VACATION responses */
 576         if (msg->cm_fields['U'] != NULL) {
 577                 safestrncpy(my.subject, msg->cm_fields['U'], sizeof my.subject);
 578         }
 579         else {
 580                 strcpy(my.subject, "");
 581         }
 582
 583         /* Keep track of the envelope-from address (use body-from if not found) */
 584         if (msg->cm_fields['P'] != NULL) {
 585                 safestrncpy(my.envelope_from, msg->cm_fields['P'], sizeof my.envelope_from);
 586                 stripallbut(my.envelope_from, '<', '>');
 587         }
 588         else if (msg->cm_fields['F'] != NULL) {
 589                 safestrncpy(my.envelope_from, msg->cm_fields['F'], sizeof my.envelope_from);
 590                 stripallbut(my.envelope_from, '<', '>');
 591         }
 592         else {
 593                 strcpy(my.envelope_from, "");
 594         }
 595
 596         len = strlen(my.envelope_from);
 597         for (i=0; i<len; ++i) {
 598                 if (isspace(my.envelope_from[i])) my.envelope_from[i] = '_';
 599         }
 600         if (haschar(my.envelope_from, '@') == 0) {
 601                 strcat(my.envelope_from, "@");
 602                 strcat(my.envelope_from, config.c_fqdn);
 603         }
 604
 605         /* Keep track of the envelope-to address (use body-to if not found) */
 606         if (msg->cm_fields['V'] != NULL) {
 607                 safestrncpy(my.envelope_to, msg->cm_fields['V'], sizeof my.envelope_to);
 608                 stripallbut(my.envelope_to, '<', '>');
 609         }
 610         else if (msg->cm_fields['R'] != NULL) {
 611                 safestrncpy(my.envelope_to, msg->cm_fields['R'], sizeof my.envelope_to);
 612                 if (msg->cm_fields['D'] != NULL) {
 613                         strcat(my.envelope_to, "@");
 614                         strcat(my.envelope_to, msg->cm_fields['D']);
 615                 }
 616                 stripallbut(my.envelope_to, '<', '>');
 617         }
 618         else {
 619                 strcpy(my.envelope_to, "");
 620         }
 621
 622         len = strlen(my.envelope_to);
 623         for (i=0; i<len; ++i) {
 624                 if (isspace(my.envelope_to[i])) my.envelope_to[i] = '_';
 625         }
 626         if (haschar(my.envelope_to, '@') == 0) {
 627                 strcat(my.envelope_to, "@");
 628                 strcat(my.envelope_to, config.c_fqdn);
 629         }
 630
 631         CtdlFreeMessage(msg);
 632
 633         sieve2_setvalue_string(sieve2_context, "allheaders", my.rfc822headers);
 634
 635         CtdlLogPrintf(CTDL_DEBUG, "Calling sieve2_execute()\n");
 636         res = sieve2_execute(sieve2_context, &my);
 637         if (res != SIEVE2_OK) {
 638                 CtdlLogPrintf(CTDL_CRIT, "sieve2_execute() returned %d: %s\n", res, sieve2_errstr(res));
 639         }
 640
 641         free(my.rfc822headers);
 642         my.rfc822headers = NULL;
 643
 644         /*
 645          * Delete the message from the inbox unless either we were told not to, or
 646          * if no other action was successfully taken.
 647          */
 648         if ( (!my.keep) && (my.cancel_implicit_keep) ) {
 649                 CtdlLogPrintf(CTDL_DEBUG, "keep is 0 -- deleting message from inbox\n");
 650                 CtdlDeleteMessages(CC->room.QRname, &msgnum, 1, "");
 651         }
 652
 653         CtdlLogPrintf(CTDL_DEBUG, "Completed sieve processing on msg <%ld>\n", msgnum);
 654         u->lastproc = msgnum;
 655
 656         return;
 657 }
 658
 659
 660
 661 /*
 662  * Given the on-disk representation of our Sieve config, load
 663  * it into an in-memory data structure.
 664  */
 665 void parse_sieve_config(char *conf, struct sdm_userdata *u) {
 666         char *ptr;
 667         char *c, *vacrec;
 668         char keyword[256];
 669         struct sdm_script *sptr;
 670         struct sdm_vacation *vptr;
 671
 672         ptr = conf;
 673         while (c = ptr, ptr = bmstrcasestr(ptr, CTDLSIEVECONFIGSEPARATOR), ptr != NULL) {
 674                 *ptr = 0;
 675                 ptr += strlen(CTDLSIEVECONFIGSEPARATOR);
 676
 677                 extract_token(keyword, c, 0, '|', sizeof keyword);
 678
 679                 if (!strcasecmp(keyword, "lastproc")) {
 680                         u->lastproc = extract_long(c, 1);
 681                 }
 682
 683                 else if (!strcasecmp(keyword, "script")) {
 684                         sptr = malloc(sizeof(struct sdm_script));
 685                         extract_token(sptr->script_name, c, 1, '|', sizeof sptr->script_name);
 686                         sptr->script_active = extract_int(c, 2);
 687                         remove_token(c, 0, '|');
 688                         remove_token(c, 0, '|');
 689                         remove_token(c, 0, '|');
 690                         sptr->script_content = strdup(c);
 691                         sptr->next = u->first_script;
 692                         u->first_script = sptr;
 693                 }
 694
 695                 else if (!strcasecmp(keyword, "vacation")) {
 696
 697                         if (c != NULL) while (vacrec=c, c=strchr(c, '\n'), (c != NULL)) {
 698
 699                                 *c = 0;
 700                                 ++c;
 701
 702                                 if (strncasecmp(vacrec, "vacation|", 9)) {
 703                                         vptr = malloc(sizeof(struct sdm_vacation));
 704                                         extract_token(vptr->fromaddr, vacrec, 0, '|', sizeof vptr->fromaddr);
 705                                         vptr->timestamp = extract_long(vacrec, 1);
 706                                         vptr->next = u->first_vacation;
 707                                         u->first_vacation = vptr;
 708                                 }
 709                         }
 710                 }
 711
 712                 /* ignore unknown keywords */
 713         }
 714 }
 715
 716 /*
 717  * We found the Sieve configuration for this user.
 718  * Now do something with it.
 719  */
 720 void get_sieve_config_backend(long msgnum, void *userdata) {
 721         struct sdm_userdata *u = (struct sdm_userdata *) userdata;
 722         struct CtdlMessage *msg;
 723         char *conf;
 724
 725         u->config_msgnum = msgnum;
 726         msg = CtdlFetchMessage(msgnum, 1);
 727         if (msg == NULL) {
 728                 u->config_msgnum = (-1) ;
 729                 return;
 730         }
 731
 732         conf = msg->cm_fields['M'];
 733         msg->cm_fields['M'] = NULL;
 734         CtdlFreeMessage(msg);
 735
 736         if (conf != NULL) {
 737                 parse_sieve_config(conf, u);
 738                 free(conf);
 739         }
 740
 741 }
 742
 743
 744 /*
 745  * Write our citadel sieve config back to disk
 746  *
 747  * (Set yes_write_to_disk to nonzero to make it actually write the config;
 748  * otherwise it just frees the data structures.)
 749  */
 750 void rewrite_ctdl_sieve_config(struct sdm_userdata *u, int yes_write_to_disk) {
 751         char *text;
 752         struct sdm_script *sptr;
 753         struct sdm_vacation *vptr;
 754         size_t tsize;
 755
 756         text = malloc(1024);
 757         tsize = 1024;
 758         snprintf(text, 1024,
 759                 "Content-type: application/x-citadel-sieve-config\n"
 760                 "\n"
 761                 CTDLSIEVECONFIGSEPARATOR
 762                 "lastproc|%ld"
 763                 CTDLSIEVECONFIGSEPARATOR
 764         ,
 765                 u->lastproc
 766         );
 767
 768         while (u->first_script != NULL) {
 769                 size_t tlen;
 770                 tlen = strlen(text);
 771                 tsize = tlen + strlen(u->first_script->script_content) +256;
 772                 text = realloc(text, tsize);
 773                 sprintf(&text[strlen(text)], "script|%s|%d|%s" CTDLSIEVECONFIGSEPARATOR,
 774                         u->first_script->script_name,
 775                         u->first_script->script_active,
 776                         u->first_script->script_content
 777                 );
 778                 sptr = u->first_script;
 779                 u->first_script = u->first_script->next;
 780                 free(sptr->script_content);
 781                 free(sptr);
 782         }
 783
 784         if (u->first_vacation != NULL) {
 785
 786                 tsize = strlen(text) + 256;
 787                 for (vptr = u->first_vacation; vptr != NULL; vptr = vptr->next) {
 788                         tsize += strlen(vptr->fromaddr + 32);
 789                 }
 790                 text = realloc(text, tsize);
 791
 792                 sprintf(&text[strlen(text)], "vacation|\n");
 793                 while (u->first_vacation != NULL) {
 794                         if ( (time(NULL) - u->first_vacation->timestamp) < (MAX_VACATION * 86400)) {
 795                                 sprintf(&text[strlen(text)], "%s|%ld\n",
 796                                         u->first_vacation->fromaddr,
 797                                         u->first_vacation->timestamp
 798                                 );
 799                         }
 800                         vptr = u->first_vacation;
 801                         u->first_vacation = u->first_vacation->next;
 802                         free(vptr);
 803                 }
 804                 sprintf(&text[strlen(text)], CTDLSIEVECONFIGSEPARATOR);
 805         }
 806
 807         if (yes_write_to_disk)
 808         {
 809                 /* Save the config */
 810                 quickie_message("Citadel", NULL, NULL, u->config_roomname,
 811                                 text,
 812                                 4,
 813                                 "Sieve configuration"
 814                 );
 815
 816                 /* And delete the old one */
 817                 if (u->config_msgnum > 0) {
 818                         CtdlDeleteMessages(u->config_roomname, &u->config_msgnum, 1, "");
 819                 }
 820         }
 821
 822         free (text);
 823
 824 }
 825
 826
 827 /*
 828  * This is our callback registration table for libSieve.
 829  */
 830 sieve2_callback_t ctdl_sieve_callbacks[] = {
 831         { SIEVE2_ACTION_REJECT,         ctdl_reject             },
 832         { SIEVE2_ACTION_VACATION,       ctdl_vacation           },
 833         { SIEVE2_ERRCALL_PARSE,         ctdl_errparse           },
 834         { SIEVE2_ERRCALL_RUNTIME,       ctdl_errexec            },
 835         { SIEVE2_ACTION_FILEINTO,       ctdl_fileinto           },
 836         { SIEVE2_ACTION_REDIRECT,       ctdl_redirect           },
 837         { SIEVE2_ACTION_DISCARD,        ctdl_discard            },
 838         { SIEVE2_ACTION_KEEP,           ctdl_keep               },
 839         { SIEVE2_SCRIPT_GETSCRIPT,      ctdl_getscript          },
 840         { SIEVE2_DEBUG_TRACE,           ctdl_debug              },
 841         { SIEVE2_MESSAGE_GETALLHEADERS, ctdl_getheaders         },
 842         { SIEVE2_MESSAGE_GETSIZE,       ctdl_getsize            },
 843         { SIEVE2_MESSAGE_GETENVELOPE,   ctdl_getenvelope        },
 844 /*
 845  * These actions are unsupported by Citadel so we don't declare them.
 846  *
 847         { SIEVE2_ACTION_NOTIFY,         ctdl_notify             },
 848         { SIEVE2_MESSAGE_GETSUBADDRESS, ctdl_getsubaddress      },
 849         { SIEVE2_MESSAGE_GETBODY,       ctdl_getbody            },
 850  *
 851  */
 852         { 0 }
 853 };
 854
 855
 856 /*
 857  * Perform sieve processing for a single room
 858  */
 859 void sieve_do_room(char *roomname) {
 860
 861         struct sdm_userdata u;
 862         sieve2_context_t *sieve2_context = NULL;        /* Context for sieve parser */
 863         int res;                                        /* Return code from libsieve calls */
 864         long orig_lastproc = 0;
 865
 866         memset(&u, 0, sizeof u);
 867
 868         /* See if the user who owns this 'mailbox' has any Sieve scripts that
 869          * require execution.
 870          */
 871         snprintf(u.config_roomname, sizeof u.config_roomname, "%010ld.%s", atol(roomname), USERCONFIGROOM);
 872         if (getroom(&CC->room, u.config_roomname) != 0) {
 873                 CtdlLogPrintf(CTDL_DEBUG, "<%s> does not exist.  No processing is required.\n", u.config_roomname);
 874                 return;
 875         }
 876
 877         /*
 878          * Find the sieve scripts and control record and do something
 879          */
 880         u.config_msgnum = (-1);
 881         CtdlForEachMessage(MSGS_LAST, 1, NULL, SIEVECONFIG, NULL,
 882                 get_sieve_config_backend, (void *)&u );
 883
 884         if (u.config_msgnum < 0) {
 885                 CtdlLogPrintf(CTDL_DEBUG, "No Sieve rules exist.  No processing is required.\n");
 886                 return;
 887         }
 888
 889         CtdlLogPrintf(CTDL_DEBUG, "Rules found.  Performing Sieve processing for <%s>\n", roomname);
 890
 891         if (getroom(&CC->room, roomname) != 0) {
 892                 CtdlLogPrintf(CTDL_CRIT, "ERROR: cannot load <%s>\n", roomname);
 893                 return;
 894         }
 895
 896         /* Initialize the Sieve parser */
 897
 898         res = sieve2_alloc(&sieve2_context);
 899         if (res != SIEVE2_OK) {
 900                 CtdlLogPrintf(CTDL_CRIT, "sieve2_alloc() returned %d: %s\n", res, sieve2_errstr(res));
 901                 return;
 902         }
 903
 904         res = sieve2_callbacks(sieve2_context, ctdl_sieve_callbacks);
 905         if (res != SIEVE2_OK) {
 906                 CtdlLogPrintf(CTDL_CRIT, "sieve2_callbacks() returned %d: %s\n", res, sieve2_errstr(res));
 907                 goto BAIL;
 908         }
 909
 910         /* Validate the script */
 911
 912         struct ctdl_sieve my;           /* dummy ctdl_sieve struct just to pass "u" slong */
 913         memset(&my, 0, sizeof my);
 914         my.u = &u;
 915         res = sieve2_validate(sieve2_context, &my);
 916         if (res != SIEVE2_OK) {
 917                 CtdlLogPrintf(CTDL_CRIT, "sieve2_validate() returned %d: %s\n", res, sieve2_errstr(res));
 918                 goto BAIL;
 919         }
 920
 921         /* Do something useful */
 922         u.sieve2_context = sieve2_context;
 923         orig_lastproc = u.lastproc;
 924         CtdlForEachMessage(MSGS_GT, u.lastproc, NULL, NULL, NULL,
 925                 sieve_do_msg,
 926                 (void *) &u
 927         );
 928
 929 BAIL:
 930         res = sieve2_free(&sieve2_context);
 931         if (res != SIEVE2_OK) {
 932                 CtdlLogPrintf(CTDL_CRIT, "sieve2_free() returned %d: %s\n", res, sieve2_errstr(res));
 933         }
 934
 935         /* Rewrite the config if we have to */
 936         rewrite_ctdl_sieve_config(&u, (u.lastproc > orig_lastproc) ) ;
 937 }
 938
 939
 940 /*
 941  * Perform sieve processing for all rooms which require it
 942  */
 943 void perform_sieve_processing(void) {
 944         struct RoomProcList *ptr = NULL;
 945
 946         if (sieve_list != NULL) {
 947                 CtdlLogPrintf(CTDL_DEBUG, "Begin Sieve processing\n");
 948                 while (sieve_list != NULL) {
 949                         char spoolroomname[ROOMNAMELEN];
 950                         safestrncpy(spoolroomname, sieve_list->name, sizeof spoolroomname);
 951                         begin_critical_section(S_SIEVELIST);
 952
 953                         /* pop this record off the list */
 954                         ptr = sieve_list;
 955                         sieve_list = sieve_list->next;
 956                         free(ptr);
 957
 958                         /* invalidate any duplicate entries to prevent double processing */
 959                         for (ptr=sieve_list; ptr!=NULL; ptr=ptr->next) {
 960                                 if (!strcasecmp(ptr->name, spoolroomname)) {
 961                                         ptr->name[0] = 0;
 962                                 }
 963                         }
 964
 965                         end_critical_section(S_SIEVELIST);
 966                         if (spoolroomname[0] != 0) {
 967                                 sieve_do_room(spoolroomname);
 968                         }
 969                 }
 970         }
 971 }
 972
 973
 974 void msiv_load(struct sdm_userdata *u) {
 975         char hold_rm[ROOMNAMELEN];
 976
 977         strcpy(hold_rm, CC->room.QRname);       /* save current room */
 978
 979         /* Take a spin through the user's personal address book */
 980         if (getroom(&CC->room, USERCONFIGROOM) == 0) {
 981
 982                 u->config_msgnum = (-1);
 983                 strcpy(u->config_roomname, CC->room.QRname);
 984                 CtdlForEachMessage(MSGS_LAST, 1, NULL, SIEVECONFIG, NULL,
 985                         get_sieve_config_backend, (void *)u );
 986
 987         }
 988
 989         if (strcmp(CC->room.QRname, hold_rm)) {
 990                 getroom(&CC->room, hold_rm);    /* return to saved room */
 991         }
 992 }
 993
 994 void msiv_store(struct sdm_userdata *u, int yes_write_to_disk) {
 995 /*
 996  * Initialise the sieve configs last processed message number.
 997  * We don't need to get the highest message number for the users inbox since the systems
 998  * highest message number will be higher than that and loer than this scripts message number
 999  * This prevents this new script from processing any old messages in the inbox.
1000  * Most importantly it will prevent vacation messages being sent to lots of old messages
1001  * in the inbox.
1002  */
1003         u->lastproc = CtdlGetCurrentMessageNumber();
1004         rewrite_ctdl_sieve_config(u, yes_write_to_disk);
1005 }
1006
1007
1008 /*
1009  * Select the active script.
1010  * (Set script_name to an empty string to disable all scripts)
1011  *
1012  * Returns 0 on success or nonzero for error.
1013  */
1014 int msiv_setactive(struct sdm_userdata *u, char *script_name) {
1015         int ok = 0;
1016         struct sdm_script *s;
1017
1018         /* First see if the supplied value is ok */
1019
1020         if (IsEmptyStr(script_name)) {
1021                 ok = 1;
1022         }
1023         else {
1024                 for (s=u->first_script; s!=NULL; s=s->next) {
1025                         if (!strcasecmp(s->script_name, script_name)) {
1026                                 ok = 1;
1027                         }
1028                 }
1029         }
1030
1031         if (!ok) return(-1);
1032
1033         /* Now set the active script */
1034         for (s=u->first_script; s!=NULL; s=s->next) {
1035                 if (!strcasecmp(s->script_name, script_name)) {
1036                         s->script_active = 1;
1037                 }
1038                 else {
1039                         s->script_active = 0;
1040                 }
1041         }
1042
1043         return(0);
1044 }
1045
1046
1047 /*
1048  * Fetch a script by name.
1049  *
1050  * Returns NULL if the named script was not found, or a pointer to the script
1051  * if it was found.   NOTE: the caller does *not* own the memory returned by
1052  * this function.  Copy it if you need to keep it.
1053  */
1054 char *msiv_getscript(struct sdm_userdata *u, char *script_name) {
1055         struct sdm_script *s;
1056
1057         for (s=u->first_script; s!=NULL; s=s->next) {
1058                 if (!strcasecmp(s->script_name, script_name)) {
1059                         if (s->script_content != NULL) {
1060                                 return (s->script_content);
1061                         }
1062                 }
1063         }
1064
1065         return(NULL);
1066 }
1067
1068
1069 /*
1070  * Delete a script by name.
1071  *
1072  * Returns 0 if the script was deleted.
1073  *       1 if the script was not found.
1074  *       2 if the script cannot be deleted because it is active.
1075  */
1076 int msiv_deletescript(struct sdm_userdata *u, char *script_name) {
1077         struct sdm_script *s = NULL;
1078         struct sdm_script *script_to_delete = NULL;
1079
1080         for (s=u->first_script; s!=NULL; s=s->next) {
1081                 if (!strcasecmp(s->script_name, script_name)) {
1082                         script_to_delete = s;
1083                         if (s->script_active) {
1084                                 return(2);
1085                         }
1086                 }
1087         }
1088
1089         if (script_to_delete == NULL) return(1);
1090
1091         if (u->first_script == script_to_delete) {
1092                 u->first_script = u->first_script->next;
1093         }
1094         else for (s=u->first_script; s!=NULL; s=s->next) {
1095                 if (s->next == script_to_delete) {
1096                         s->next = s->next->next;
1097                 }
1098         }
1099
1100         free(script_to_delete->script_content);
1101         free(script_to_delete);
1102         return(0);
1103 }
1104
1105
1106 /*
1107  * Add or replace a new script.
1108  * NOTE: after this function returns, "u" owns the memory that "script_content"
1109  * was pointing to.
1110  */
1111 void msiv_putscript(struct sdm_userdata *u, char *script_name, char *script_content) {
1112         int replaced = 0;
1113         struct sdm_script *s, *sptr;
1114
1115         for (s=u->first_script; s!=NULL; s=s->next) {
1116                 if (!strcasecmp(s->script_name, script_name)) {
1117                         if (s->script_content != NULL) {
1118                                 free(s->script_content);
1119                         }
1120                         s->script_content = script_content;
1121                         replaced = 1;
1122                 }
1123         }
1124
1125         if (replaced == 0) {
1126                 sptr = malloc(sizeof(struct sdm_script));
1127                 safestrncpy(sptr->script_name, script_name, sizeof sptr->script_name);
1128                 sptr->script_content = script_content;
1129                 sptr->script_active = 0;
1130                 sptr->next = u->first_script;
1131                 u->first_script = sptr;
1132         }
1133 }
1134
1135
1136
1137 /*
1138  * Citadel protocol to manage sieve scripts.
1139  * This is basically a simplified (read: doesn't resemble IMAP) version
1140  * of the 'managesieve' protocol.
1141  */
1142 void cmd_msiv(char *argbuf) {
1143         char subcmd[256];
1144         struct sdm_userdata u;
1145         char script_name[256];
1146         char *script_content = NULL;
1147         struct sdm_script *s;
1148         int i;
1149         int changes_made = 0;
1150
1151         memset(&u, 0, sizeof(struct sdm_userdata));
1152
1153         if (CtdlAccessCheck(ac_logged_in)) return;
1154         extract_token(subcmd, argbuf, 0, '|', sizeof subcmd);
1155         msiv_load(&u);
1156
1157         if (!strcasecmp(subcmd, "putscript")) {
1158                 extract_token(script_name, argbuf, 1, '|', sizeof script_name);
1159                 if (!IsEmptyStr(script_name)) {
1160                         cprintf("%d Transmit script now\n", SEND_LISTING);
1161                         script_content = CtdlReadMessageBody("000", config.c_maxmsglen, NULL, 0, 0);
1162                         msiv_putscript(&u, script_name, script_content);
1163                         changes_made = 1;
1164                 }
1165                 else {
1166                         cprintf("%d Invalid script name.\n", ERROR + ILLEGAL_VALUE);
1167                 }
1168         }
1169
1170         else if (!strcasecmp(subcmd, "listscripts")) {
1171                 cprintf("%d Scripts:\n", LISTING_FOLLOWS);
1172                 for (s=u.first_script; s!=NULL; s=s->next) {
1173                         if (s->script_content != NULL) {
1174                                 cprintf("%s|%d|\n", s->script_name, s->script_active);
1175                         }
1176                 }
1177                 cprintf("000\n");
1178         }
1179
1180         else if (!strcasecmp(subcmd, "setactive")) {
1181                 extract_token(script_name, argbuf, 1, '|', sizeof script_name);
1182                 if (msiv_setactive(&u, script_name) == 0) {
1183                         cprintf("%d ok\n", CIT_OK);
1184                         changes_made = 1;
1185                 }
1186                 else {
1187                         cprintf("%d Script '%s' does not exist.\n",
1188                                 ERROR + ILLEGAL_VALUE,
1189                                 script_name
1190                         );
1191                 }
1192         }
1193
1194         else if (!strcasecmp(subcmd, "getscript")) {
1195                 extract_token(script_name, argbuf, 1, '|', sizeof script_name);
1196                 script_content = msiv_getscript(&u, script_name);
1197                 if (script_content != NULL) {
1198                         int script_len;
1199
1200                         cprintf("%d Script:\n", LISTING_FOLLOWS);
1201                         script_len = strlen(script_content);
1202                         client_write(script_content, script_len);
1203                         if (script_content[script_len-1] != '\n') {
1204                                 cprintf("\n");
1205                         }
1206                         cprintf("000\n");
1207                 }
1208                 else {
1209                         cprintf("%d Invalid script name.\n", ERROR + ILLEGAL_VALUE);
1210                 }
1211         }
1212
1213         else if (!strcasecmp(subcmd, "deletescript")) {
1214                 extract_token(script_name, argbuf, 1, '|', sizeof script_name);
1215                 i = msiv_deletescript(&u, script_name);
1216                 if (i == 0) {
1217                         cprintf("%d ok\n", CIT_OK);
1218                         changes_made = 1;
1219                 }
1220                 else if (i == 1) {
1221                         cprintf("%d Script '%s' does not exist.\n",
1222                                 ERROR + ILLEGAL_VALUE,
1223                                 script_name
1224                         );
1225                 }
1226                 else if (i == 2) {
1227                         cprintf("%d Script '%s' is active and cannot be deleted.\n",
1228                                 ERROR + ILLEGAL_VALUE,
1229                                 script_name
1230                         );
1231                 }
1232                 else {
1233                         cprintf("%d unknown error\n", ERROR);
1234                 }
1235         }
1236
1237         else {
1238                 cprintf("%d Invalid subcommand\n", ERROR + CMD_NOT_SUPPORTED);
1239         }
1240
1241         msiv_store(&u, changes_made);
1242 }
1243
1244
1245
1246 void ctdl_sieve_init(void) {
1247         char *cred = NULL;
1248         sieve2_context_t *sieve2_context = NULL;
1249         int res;
1250
1251         /*
1252          *      We don't really care about dumping the entire credits to the log
1253          *      every time the server is initialized.  The documentation will suffice
1254          *      for that purpose.  We are making a call to sieve2_credits() in order
1255          *      to demonstrate that we have successfully linked in to libsieve.
1256          */
1257         cred = strdup(sieve2_credits());
1258         if (cred == NULL) return;
1259
1260         if (strlen(cred) > 60) {
1261                 strcpy(&cred[55], "...");
1262         }
1263
1264         CtdlLogPrintf(CTDL_INFO, "%s\n",cred);
1265         free(cred);
1266
1267         /* Briefly initialize a Sieve parser instance just so we can list the
1268          * extensions that are available.
1269          */
1270         res = sieve2_alloc(&sieve2_context);
1271         if (res != SIEVE2_OK) {
1272                 CtdlLogPrintf(CTDL_CRIT, "sieve2_alloc() returned %d: %s\n", res, sieve2_errstr(res));
1273                 return;
1274         }
1275
1276         res = sieve2_callbacks(sieve2_context, ctdl_sieve_callbacks);
1277         if (res != SIEVE2_OK) {
1278                 CtdlLogPrintf(CTDL_CRIT, "sieve2_callbacks() returned %d: %s\n", res, sieve2_errstr(res));
1279                 goto BAIL;
1280         }
1281
1282         msiv_extensions = strdup(sieve2_listextensions(sieve2_context));
1283         CtdlLogPrintf(CTDL_INFO, "Extensions: %s\n", msiv_extensions);
1284
1285 BAIL:   res = sieve2_free(&sieve2_context);
1286         if (res != SIEVE2_OK) {
1287                 CtdlLogPrintf(CTDL_CRIT, "sieve2_free() returned %d: %s\n", res, sieve2_errstr(res));
1288         }
1289
1290 }
1291
1292 int serv_sieve_room(struct ctdlroom *room)
1293 {
1294         if (!strcasecmp(&room->QRname[11], MAILROOM)) {
1295                 sieve_queue_room(room);
1296         }
1297         return 0;
1298 }
1299
1300 CTDL_MODULE_INIT(sieve)
1301 {
1302         if (!threading)
1303         {
1304
1305                 ctdl_sieve_init();
1306                 CtdlRegisterProtoHook(cmd_msiv, "MSIV", "Manage Sieve scripts");
1307                 CtdlRegisterRoomHook(serv_sieve_room);
1308                 CtdlRegisterSessionHook(perform_sieve_processing, EVT_HOUSE);
1309         }
1310
1311         /* return our Subversion id for the Log */
1312         return "$Id$";
1313 }
1314