citadel/modules/sieve/serv_sieve.c

   1 /*
   2  * This module glues libSieve to the Citadel server in order to implement
   3  * the Sieve mailbox filtering language (RFC 3028).
   4  *
   5  * Copyright (c) 1987-2010 by the citadel.org team
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 3 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include "sysdep.h"
  23 #include <stdlib.h>
  24 #include <unistd.h>
  25 #include <stdio.h>
  26 #include <fcntl.h>
  27 #include <ctype.h>
  28 #include <pwd.h>
  29 #include <errno.h>
  30 #include <sys/types.h>
  31
  32 #if TIME_WITH_SYS_TIME
  33 # include <sys/time.h>
  34 # include <time.h>
  35 #else
  36 # if HAVE_SYS_TIME_H
  37 #  include <sys/time.h>
  38 # else
  39 #  include <time.h>
  40 # endif
  41 #endif
  42
  43 #include <sys/wait.h>
  44 #include <string.h>
  45 #include <limits.h>
  46 #include <libcitadel.h>
  47 #include "citadel.h"
  48 #include "server.h"
  49 #include "citserver.h"
  50 #include "support.h"
  51 #include "config.h"
  52 #include "database.h"
  53 #include "msgbase.h"
  54 #include "internet_addressing.h"
  55 #include "ctdl_module.h"
  56 #include "serv_sieve.h"
  57
  58 struct RoomProcList *sieve_list = NULL;
  59 char *msiv_extensions = NULL;
  60
  61
  62 /*
  63  * Callback function to send libSieve trace messages to Citadel log facility
  64  */
  65 int ctdl_debug(sieve2_context_t *s, void *my)
  66 {
  67         syslog(LOG_DEBUG, "Sieve: %s\n", sieve2_getvalue_string(s, "message"));
  68         return SIEVE2_OK;
  69 }
  70
  71
  72 /*
  73  * Callback function to log script parsing errors
  74  */
  75 int ctdl_errparse(sieve2_context_t *s, void *my)
  76 {
  77         syslog(LOG_WARNING, "Error in script, line %d: %s\n",
  78                 sieve2_getvalue_int(s, "lineno"),
  79                 sieve2_getvalue_string(s, "message")
  80         );
  81         return SIEVE2_OK;
  82 }
  83
  84
  85 /*
  86  * Callback function to log script execution errors
  87  */
  88 int ctdl_errexec(sieve2_context_t *s, void *my)
  89 {
  90         syslog(LOG_WARNING, "Error executing script: %s\n",
  91                 sieve2_getvalue_string(s, "message")
  92         );
  93         return SIEVE2_OK;
  94 }
  95
  96
  97 /*
  98  * Callback function to redirect a message to a different folder
  99  */
 100 int ctdl_redirect(sieve2_context_t *s, void *my)
 101 {
 102         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 103         struct CtdlMessage *msg = NULL;
 104         struct recptypes *valid = NULL;
 105         char recp[256];
 106
 107         safestrncpy(recp, sieve2_getvalue_string(s, "address"), sizeof recp);
 108
 109         syslog(LOG_DEBUG, "Action is REDIRECT, recipient <%s>\n", recp);
 110
 111         valid = validate_recipients(recp, NULL, 0);
 112         if (valid == NULL) {
 113                 syslog(LOG_WARNING, "REDIRECT failed: bad recipient <%s>\n", recp);
 114                 return SIEVE2_ERROR_BADARGS;
 115         }
 116         if (valid->num_error > 0) {
 117                 syslog(LOG_WARNING, "REDIRECT failed: bad recipient <%s>\n", recp);
 118                 free_recipients(valid);
 119                 return SIEVE2_ERROR_BADARGS;
 120         }
 121
 122         msg = CtdlFetchMessage(cs->msgnum, 1);
 123         if (msg == NULL) {
 124                 syslog(LOG_WARNING, "REDIRECT failed: unable to fetch msg %ld\n", cs->msgnum);
 125                 free_recipients(valid);
 126                 return SIEVE2_ERROR_BADARGS;
 127         }
 128
 129         CtdlSubmitMsg(msg, valid, NULL, 0);
 130         cs->cancel_implicit_keep = 1;
 131         free_recipients(valid);
 132         CtdlFreeMessage(msg);
 133         return SIEVE2_OK;
 134 }
 135
 136
 137 /*
 138  * Callback function to indicate that a message *will* be kept in the inbox
 139  */
 140 int ctdl_keep(sieve2_context_t *s, void *my)
 141 {
 142         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 143
 144         syslog(LOG_DEBUG, "Action is KEEP\n");
 145
 146         cs->keep = 1;
 147         cs->cancel_implicit_keep = 1;
 148         return SIEVE2_OK;
 149 }
 150
 151
 152 /*
 153  * Callback function to file a message into a different mailbox
 154  */
 155 int ctdl_fileinto(sieve2_context_t *s, void *my)
 156 {
 157         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 158         const char *dest_folder = sieve2_getvalue_string(s, "mailbox");
 159         int c;
 160         char foldername[256];
 161         char original_room_name[ROOMNAMELEN];
 162
 163         syslog(LOG_DEBUG, "Action is FILEINTO, destination is <%s>\n", dest_folder);
 164
 165         /* FILEINTO 'INBOX' is the same thing as KEEP */
 166         if ( (!strcasecmp(dest_folder, "INBOX")) || (!strcasecmp(dest_folder, MAILROOM)) ) {
 167                 cs->keep = 1;
 168                 cs->cancel_implicit_keep = 1;
 169                 return SIEVE2_OK;
 170         }
 171
 172         /* Remember what room we came from */
 173         safestrncpy(original_room_name, CC->room.QRname, sizeof original_room_name);
 174
 175         /* First try a mailbox name match (check personal mail folders first) */
 176         snprintf(foldername, sizeof foldername, "%010ld.%s", cs->usernum, dest_folder);
 177         c = CtdlGetRoom(&CC->room, foldername);
 178
 179         /* Then a regular room name match (public and private rooms) */
 180         if (c != 0) {
 181                 safestrncpy(foldername, dest_folder, sizeof foldername);
 182                 c = CtdlGetRoom(&CC->room, foldername);
 183         }
 184
 185         if (c != 0) {
 186                 syslog(LOG_WARNING, "FILEINTO failed: target <%s> does not exist\n", dest_folder);
 187                 return SIEVE2_ERROR_BADARGS;
 188         }
 189
 190         /* Yes, we actually have to go there */
 191         CtdlUserGoto(NULL, 0, 0, NULL, NULL);
 192
 193         c = CtdlSaveMsgPointersInRoom(NULL, &cs->msgnum, 1, 0, NULL, 0);
 194
 195         /* Go back to the room we came from */
 196         if (strcasecmp(original_room_name, CC->room.QRname)) {
 197                 CtdlUserGoto(original_room_name, 0, 0, NULL, NULL);
 198         }
 199
 200         if (c == 0) {
 201                 cs->cancel_implicit_keep = 1;
 202                 return SIEVE2_OK;
 203         }
 204         else {
 205                 return SIEVE2_ERROR_BADARGS;
 206         }
 207 }
 208
 209
 210 /*
 211  * Callback function to indicate that a message should be discarded.
 212  */
 213 int ctdl_discard(sieve2_context_t *s, void *my)
 214 {
 215         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 216
 217         syslog(LOG_DEBUG, "Action is DISCARD\n");
 218
 219         /* Cancel the implicit keep.  That's all there is to it. */
 220         cs->cancel_implicit_keep = 1;
 221         return SIEVE2_OK;
 222 }
 223
 224
 225
 226 /*
 227  * Callback function to indicate that a message should be rejected
 228  */
 229 int ctdl_reject(sieve2_context_t *s, void *my)
 230 {
 231         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 232         char *reject_text = NULL;
 233
 234         syslog(LOG_DEBUG, "Action is REJECT\n");
 235
 236         /* If we don't know who sent the message, do a DISCARD instead. */
 237         if (IsEmptyStr(cs->sender)) {
 238                 syslog(LOG_INFO, "Unknown sender.  Doing DISCARD instead of REJECT.\n");
 239                 return ctdl_discard(s, my);
 240         }
 241
 242         /* Assemble the reject message. */
 243         reject_text = malloc(strlen(sieve2_getvalue_string(s, "message")) + 1024);
 244         if (reject_text == NULL) {
 245                 return SIEVE2_ERROR_FAIL;
 246         }
 247
 248         sprintf(reject_text,
 249                 "Content-type: text/plain\n"
 250                 "\n"
 251                 "The message was refused by the recipient's mail filtering program.\n"
 252                 "The reason given was as follows:\n"
 253                 "\n"
 254                 "%s\n"
 255                 "\n"
 256         ,
 257                 sieve2_getvalue_string(s, "message")
 258         );
 259
 260         quickie_message(        /* This delivers the message */
 261                 NULL,
 262                 cs->envelope_to,
 263                 cs->sender,
 264                 NULL,
 265                 reject_text,
 266                 FMT_RFC822,
 267                 "Delivery status notification"
 268         );
 269
 270         free(reject_text);
 271         cs->cancel_implicit_keep = 1;
 272         return SIEVE2_OK;
 273 }
 274
 275
 276
 277 /*
 278  * Callback function to indicate that a vacation message should be generated
 279  */
 280 int ctdl_vacation(sieve2_context_t *s, void *my)
 281 {
 282         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 283         struct sdm_vacation *vptr;
 284         int days = 1;
 285         const char *message;
 286         char *vacamsg_text = NULL;
 287         char vacamsg_subject[1024];
 288
 289         syslog(LOG_DEBUG, "Action is VACATION\n");
 290
 291         message = sieve2_getvalue_string(s, "message");
 292         if (message == NULL) return SIEVE2_ERROR_BADARGS;
 293
 294         if (sieve2_getvalue_string(s, "subject") != NULL) {
 295                 safestrncpy(vacamsg_subject, sieve2_getvalue_string(s, "subject"), sizeof vacamsg_subject);
 296         }
 297         else {
 298                 snprintf(vacamsg_subject, sizeof vacamsg_subject, "Re: %s", cs->subject);
 299         }
 300
 301         days = sieve2_getvalue_int(s, "days");
 302         if (days < 1) days = 1;
 303         if (days > MAX_VACATION) days = MAX_VACATION;
 304
 305         /* Check to see whether we've already alerted this sender that we're on vacation. */
 306         for (vptr = cs->u->first_vacation; vptr != NULL; vptr = vptr->next) {
 307                 if (!strcasecmp(vptr->fromaddr, cs->sender)) {
 308                         if ( (time(NULL) - vptr->timestamp) < (days * 86400) ) {
 309                                 syslog(LOG_DEBUG, "Already alerted <%s> recently.\n", cs->sender);
 310                                 return SIEVE2_OK;
 311                         }
 312                 }
 313         }
 314
 315         /* Assemble the reject message. */
 316         vacamsg_text = malloc(strlen(message) + 1024);
 317         if (vacamsg_text == NULL) {
 318                 return SIEVE2_ERROR_FAIL;
 319         }
 320
 321         sprintf(vacamsg_text,
 322                 "Content-type: text/plain charset=utf-8\n"
 323                 "\n"
 324                 "%s\n"
 325                 "\n"
 326         ,
 327                 message
 328         );
 329
 330         quickie_message(        /* This delivers the message */
 331                 NULL,
 332                 cs->envelope_to,
 333                 cs->sender,
 334                 NULL,
 335                 vacamsg_text,
 336                 FMT_RFC822,
 337                 vacamsg_subject
 338         );
 339
 340         free(vacamsg_text);
 341
 342         /* Now update the list to reflect the fact that we've alerted this sender.
 343          * If they're already in the list, just update the timestamp.
 344          */
 345         for (vptr = cs->u->first_vacation; vptr != NULL; vptr = vptr->next) {
 346                 if (!strcasecmp(vptr->fromaddr, cs->sender)) {
 347                         vptr->timestamp = time(NULL);
 348                         return SIEVE2_OK;
 349                 }
 350         }
 351
 352         /* If we get to this point, create a new record.
 353          */
 354         vptr = malloc(sizeof(struct sdm_vacation));
 355         memset(vptr, 0, sizeof(struct sdm_vacation));
 356         vptr->timestamp = time(NULL);
 357         safestrncpy(vptr->fromaddr, cs->sender, sizeof vptr->fromaddr);
 358         vptr->next = cs->u->first_vacation;
 359         cs->u->first_vacation = vptr;
 360
 361         return SIEVE2_OK;
 362 }
 363
 364
 365 /*
 366  * Callback function to parse addresses per local system convention
 367  * It is disabled because we don't support subaddresses.
 368  */
 369 #if 0
 370 int ctdl_getsubaddress(sieve2_context_t *s, void *my)
 371 {
 372         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 373
 374         /* libSieve does not take ownership of the memory used here.  But, since we
 375          * are just pointing to locations inside a struct which we are going to free
 376          * later, we're ok.
 377          */
 378         sieve2_setvalue_string(s, "user", cs->recp_user);
 379         sieve2_setvalue_string(s, "detail", "");
 380         sieve2_setvalue_string(s, "localpart", cs->recp_user);
 381         sieve2_setvalue_string(s, "domain", cs->recp_node);
 382         return SIEVE2_OK;
 383 }
 384 #endif
 385
 386
 387 /*
 388  * Callback function to parse message envelope
 389  */
 390 int ctdl_getenvelope(sieve2_context_t *s, void *my)
 391 {
 392         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 393
 394         syslog(LOG_DEBUG, "Action is GETENVELOPE\nEnvFrom: %s\n  EnvTo: %s\n",
 395                 cs->envelope_from, cs->envelope_to);
 396
 397         if (cs->envelope_from != NULL) {
 398                 if ((cs->envelope_from[0] != '@')&&(cs->envelope_from[strlen(cs->envelope_from)-1] != '@')) {
 399                         sieve2_setvalue_string(s, "from", cs->envelope_from);
 400                 }
 401                 else {
 402                         sieve2_setvalue_string(s, "from", "invalid_envelope_from@example.org");
 403                 }
 404         }
 405         else {
 406                 sieve2_setvalue_string(s, "from", "null_envelope_from@example.org");
 407         }
 408
 409
 410         if (cs->envelope_to != NULL) {
 411                 if ((cs->envelope_to[0] != '@') && (cs->envelope_to[strlen(cs->envelope_to)-1] != '@')) {
 412                         sieve2_setvalue_string(s, "to", cs->envelope_to);
 413                 }
 414                 else {
 415                         sieve2_setvalue_string(s, "to", "invalid_envelope_to@example.org");
 416                 }
 417         }
 418         else {
 419                 sieve2_setvalue_string(s, "to", "null_envelope_to@example.org");
 420         }
 421
 422         return SIEVE2_OK;
 423 }
 424
 425
 426 /*
 427  * Callback function to fetch message body
 428  * (Uncomment the code if we implement this extension)
 429  *
 430 int ctdl_getbody(sieve2_context_t *s, void *my)
 431 {
 432         return SIEVE2_ERROR_UNSUPPORTED;
 433 }
 434  *
 435  */
 436
 437
 438 /*
 439  * Callback function to fetch message size
 440  */
 441 int ctdl_getsize(sieve2_context_t *s, void *my)
 442 {
 443         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 444         struct MetaData smi;
 445
 446         GetMetaData(&smi, cs->msgnum);
 447
 448         if (smi.meta_rfc822_length > 0L) {
 449                 sieve2_setvalue_int(s, "size", (int)smi.meta_rfc822_length);
 450                 return SIEVE2_OK;
 451         }
 452
 453         return SIEVE2_ERROR_UNSUPPORTED;
 454 }
 455
 456
 457 /*
 458  * Callback function to retrieve the sieve script
 459  */
 460 int ctdl_getscript(sieve2_context_t *s, void *my) {
 461         struct sdm_script *sptr;
 462         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 463
 464         for (sptr=cs->u->first_script; sptr!=NULL; sptr=sptr->next) {
 465                 if (sptr->script_active > 0) {
 466                         syslog(LOG_DEBUG, "ctdl_getscript() is using script '%s'\n", sptr->script_name);
 467                         sieve2_setvalue_string(s, "script", sptr->script_content);
 468                         return SIEVE2_OK;
 469                 }
 470         }
 471
 472         syslog(LOG_DEBUG, "ctdl_getscript() found no active script\n");
 473         return SIEVE2_ERROR_GETSCRIPT;
 474 }
 475
 476 /*
 477  * Callback function to retrieve message headers
 478  */
 479 int ctdl_getheaders(sieve2_context_t *s, void *my) {
 480
 481         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 482
 483         syslog(LOG_DEBUG, "ctdl_getheaders() was called\n");
 484         sieve2_setvalue_string(s, "allheaders", cs->rfc822headers);
 485         return SIEVE2_OK;
 486 }
 487
 488
 489
 490 /*
 491  * Add a room to the list of those rooms which potentially require sieve processing
 492  */
 493 void sieve_queue_room(struct ctdlroom *which_room) {
 494         struct RoomProcList *ptr;
 495
 496         ptr = (struct RoomProcList *) malloc(sizeof (struct RoomProcList));
 497         if (ptr == NULL) return;
 498
 499         safestrncpy(ptr->name, which_room->QRname, sizeof ptr->name);
 500         begin_critical_section(S_SIEVELIST);
 501         ptr->next = sieve_list;
 502         sieve_list = ptr;
 503         end_critical_section(S_SIEVELIST);
 504         syslog(LOG_DEBUG, "<%s> queued for Sieve processing\n", which_room->QRname);
 505 }
 506
 507
 508
 509 /*
 510  * Perform sieve processing for one message (called by sieve_do_room() for each message)
 511  */
 512 void sieve_do_msg(long msgnum, void *userdata) {
 513         struct sdm_userdata *u = (struct sdm_userdata *) userdata;
 514         sieve2_context_t *sieve2_context;
 515         struct ctdl_sieve my;
 516         int res;
 517         struct CtdlMessage *msg;
 518         int i;
 519         size_t headers_len = 0;
 520         int len = 0;
 521
 522         if (u == NULL)
 523         {
 524                 syslog(LOG_EMERG, "Can't process message <%ld> without userdata!\n", msgnum);
 525                 return;
 526         }
 527
 528         sieve2_context = u->sieve2_context;
 529
 530         syslog(LOG_DEBUG, "Performing sieve processing on msg <%ld>\n", msgnum);
 531
 532         /*
 533          * Make sure you include message body so you can get those second-level headers ;)
 534          */
 535         msg = CtdlFetchMessage(msgnum, 1);
 536         if (msg == NULL) return;
 537
 538         /*
 539          * Grab the message headers so we can feed them to libSieve.
 540          * Use HEADERS_ONLY rather than HEADERS_FAST in order to include second-level headers.
 541          */
 542         CC->redirect_buffer = NewStrBufPlain(NULL, SIZ);
 543         CtdlOutputPreLoadedMsg(msg, MT_RFC822, HEADERS_ONLY, 0, 1, 0);
 544         headers_len = StrLength(CC->redirect_buffer);
 545         my.rfc822headers = SmashStrBuf(&CC->redirect_buffer);
 546
 547         /*
 548          * libSieve clobbers the stack if it encounters badly formed
 549          * headers.  Sanitize our headers by stripping nonprintable
 550          * characters.
 551          */
 552         for (i=0; i<headers_len; ++i) {
 553                 if (!isascii(my.rfc822headers[i])) {
 554                         my.rfc822headers[i] = '_';
 555                 }
 556         }
 557
 558         my.keep = 0;                            /* Set to 1 to declare an *explicit* keep */
 559         my.cancel_implicit_keep = 0;            /* Some actions will cancel the implicit keep */
 560         my.usernum = atol(CC->room.QRname);     /* Keep track of the owner of the room's namespace */
 561         my.msgnum = msgnum;                     /* Keep track of the message number in our local store */
 562         my.u = u;                               /* Hand off a pointer to the rest of this info */
 563
 564         /* Keep track of the recipient so we can do handling based on it later */
 565         process_rfc822_addr(msg->cm_fields['R'], my.recp_user, my.recp_node, my.recp_name);
 566
 567         /* Keep track of the sender so we can use it for REJECT and VACATION responses */
 568         if (msg->cm_fields['F'] != NULL) {
 569                 safestrncpy(my.sender, msg->cm_fields['F'], sizeof my.sender);
 570         }
 571         else if ( (msg->cm_fields['A'] != NULL) && (msg->cm_fields['N'] != NULL) ) {
 572                 snprintf(my.sender, sizeof my.sender, "%s@%s", msg->cm_fields['A'], msg->cm_fields['N']);
 573         }
 574         else if (msg->cm_fields['A'] != NULL) {
 575                 safestrncpy(my.sender, msg->cm_fields['A'], sizeof my.sender);
 576         }
 577         else {
 578                 strcpy(my.sender, "");
 579         }
 580
 581         /* Keep track of the subject so we can use it for VACATION responses */
 582         if (msg->cm_fields['U'] != NULL) {
 583                 safestrncpy(my.subject, msg->cm_fields['U'], sizeof my.subject);
 584         }
 585         else {
 586                 strcpy(my.subject, "");
 587         }
 588
 589         /* Keep track of the envelope-from address (use body-from if not found) */
 590         if (msg->cm_fields['P'] != NULL) {
 591                 safestrncpy(my.envelope_from, msg->cm_fields['P'], sizeof my.envelope_from);
 592                 stripallbut(my.envelope_from, '<', '>');
 593         }
 594         else if (msg->cm_fields['F'] != NULL) {
 595                 safestrncpy(my.envelope_from, msg->cm_fields['F'], sizeof my.envelope_from);
 596                 stripallbut(my.envelope_from, '<', '>');
 597         }
 598         else {
 599                 strcpy(my.envelope_from, "");
 600         }
 601
 602         len = strlen(my.envelope_from);
 603         for (i=0; i<len; ++i) {
 604                 if (isspace(my.envelope_from[i])) my.envelope_from[i] = '_';
 605         }
 606         if (haschar(my.envelope_from, '@') == 0) {
 607                 strcat(my.envelope_from, "@");
 608                 strcat(my.envelope_from, config.c_fqdn);
 609         }
 610
 611         /* Keep track of the envelope-to address (use body-to if not found) */
 612         if (msg->cm_fields['V'] != NULL) {
 613                 safestrncpy(my.envelope_to, msg->cm_fields['V'], sizeof my.envelope_to);
 614                 stripallbut(my.envelope_to, '<', '>');
 615         }
 616         else if (msg->cm_fields['R'] != NULL) {
 617                 safestrncpy(my.envelope_to, msg->cm_fields['R'], sizeof my.envelope_to);
 618                 if (msg->cm_fields['D'] != NULL) {
 619                         strcat(my.envelope_to, "@");
 620                         strcat(my.envelope_to, msg->cm_fields['D']);
 621                 }
 622                 stripallbut(my.envelope_to, '<', '>');
 623         }
 624         else {
 625                 strcpy(my.envelope_to, "");
 626         }
 627
 628         len = strlen(my.envelope_to);
 629         for (i=0; i<len; ++i) {
 630                 if (isspace(my.envelope_to[i])) my.envelope_to[i] = '_';
 631         }
 632         if (haschar(my.envelope_to, '@') == 0) {
 633                 strcat(my.envelope_to, "@");
 634                 strcat(my.envelope_to, config.c_fqdn);
 635         }
 636
 637         CtdlFreeMessage(msg);
 638
 639         sieve2_setvalue_string(sieve2_context, "allheaders", my.rfc822headers);
 640
 641         syslog(LOG_DEBUG, "Calling sieve2_execute()\n");
 642         res = sieve2_execute(sieve2_context, &my);
 643         if (res != SIEVE2_OK) {
 644                 syslog(LOG_CRIT, "sieve2_execute() returned %d: %s\n", res, sieve2_errstr(res));
 645         }
 646
 647         free(my.rfc822headers);
 648         my.rfc822headers = NULL;
 649
 650         /*
 651          * Delete the message from the inbox unless either we were told not to, or
 652          * if no other action was successfully taken.
 653          */
 654         if ( (!my.keep) && (my.cancel_implicit_keep) ) {
 655                 syslog(LOG_DEBUG, "keep is 0 -- deleting message from inbox\n");
 656                 CtdlDeleteMessages(CC->room.QRname, &msgnum, 1, "");
 657         }
 658
 659         syslog(LOG_DEBUG, "Completed sieve processing on msg <%ld>\n", msgnum);
 660         u->lastproc = msgnum;
 661
 662         return;
 663 }
 664
 665
 666
 667 /*
 668  * Given the on-disk representation of our Sieve config, load
 669  * it into an in-memory data structure.
 670  */
 671 void parse_sieve_config(char *conf, struct sdm_userdata *u) {
 672         char *ptr;
 673         char *c, *vacrec;
 674         char keyword[256];
 675         struct sdm_script *sptr;
 676         struct sdm_vacation *vptr;
 677
 678         ptr = conf;
 679         while (c = ptr, ptr = bmstrcasestr(ptr, CTDLSIEVECONFIGSEPARATOR), ptr != NULL) {
 680                 *ptr = 0;
 681                 ptr += strlen(CTDLSIEVECONFIGSEPARATOR);
 682
 683                 extract_token(keyword, c, 0, '|', sizeof keyword);
 684
 685                 if (!strcasecmp(keyword, "lastproc")) {
 686                         u->lastproc = extract_long(c, 1);
 687                 }
 688
 689                 else if (!strcasecmp(keyword, "script")) {
 690                         sptr = malloc(sizeof(struct sdm_script));
 691                         extract_token(sptr->script_name, c, 1, '|', sizeof sptr->script_name);
 692                         sptr->script_active = extract_int(c, 2);
 693                         remove_token(c, 0, '|');
 694                         remove_token(c, 0, '|');
 695                         remove_token(c, 0, '|');
 696                         sptr->script_content = strdup(c);
 697                         sptr->next = u->first_script;
 698                         u->first_script = sptr;
 699                 }
 700
 701                 else if (!strcasecmp(keyword, "vacation")) {
 702
 703                         if (c != NULL) while (vacrec=c, c=strchr(c, '\n'), (c != NULL)) {
 704
 705                                 *c = 0;
 706                                 ++c;
 707
 708                                 if (strncasecmp(vacrec, "vacation|", 9)) {
 709                                         vptr = malloc(sizeof(struct sdm_vacation));
 710                                         extract_token(vptr->fromaddr, vacrec, 0, '|', sizeof vptr->fromaddr);
 711                                         vptr->timestamp = extract_long(vacrec, 1);
 712                                         vptr->next = u->first_vacation;
 713                                         u->first_vacation = vptr;
 714                                 }
 715                         }
 716                 }
 717
 718                 /* ignore unknown keywords */
 719         }
 720 }
 721
 722 /*
 723  * We found the Sieve configuration for this user.
 724  * Now do something with it.
 725  */
 726 void get_sieve_config_backend(long msgnum, void *userdata) {
 727         struct sdm_userdata *u = (struct sdm_userdata *) userdata;
 728         struct CtdlMessage *msg;
 729         char *conf;
 730
 731         u->config_msgnum = msgnum;
 732         msg = CtdlFetchMessage(msgnum, 1);
 733         if (msg == NULL) {
 734                 u->config_msgnum = (-1) ;
 735                 return;
 736         }
 737
 738         conf = msg->cm_fields['M'];
 739         msg->cm_fields['M'] = NULL;
 740         CtdlFreeMessage(msg);
 741
 742         if (conf != NULL) {
 743                 parse_sieve_config(conf, u);
 744                 free(conf);
 745         }
 746
 747 }
 748
 749
 750 /*
 751  * Write our citadel sieve config back to disk
 752  *
 753  * (Set yes_write_to_disk to nonzero to make it actually write the config;
 754  * otherwise it just frees the data structures.)
 755  */
 756 void rewrite_ctdl_sieve_config(struct sdm_userdata *u, int yes_write_to_disk) {
 757         StrBuf *text;
 758         struct sdm_script *sptr;
 759         struct sdm_vacation *vptr;
 760
 761         text = NewStrBufPlain(NULL, SIZ);
 762         StrBufPrintf(text,
 763                      "Content-type: application/x-citadel-sieve-config\n"
 764                      "\n"
 765                      CTDLSIEVECONFIGSEPARATOR
 766                      "lastproc|%ld"
 767                      CTDLSIEVECONFIGSEPARATOR
 768                      ,
 769                      u->lastproc
 770                 );
 771
 772         while (u->first_script != NULL) {
 773                 StrBufAppendPrintf(text,
 774                                    "script|%s|%d|%s" CTDLSIEVECONFIGSEPARATOR,
 775                                    u->first_script->script_name,
 776                                    u->first_script->script_active,
 777                                    u->first_script->script_content
 778                         );
 779                 sptr = u->first_script;
 780                 u->first_script = u->first_script->next;
 781                 free(sptr->script_content);
 782                 free(sptr);
 783         }
 784
 785         if (u->first_vacation != NULL) {
 786
 787                 StrBufAppendPrintf(text, "vacation|\n");
 788                 while (u->first_vacation != NULL) {
 789                         if ( (time(NULL) - u->first_vacation->timestamp) < (MAX_VACATION * 86400)) {
 790                                 StrBufAppendPrintf(text, "%s|%ld\n",
 791                                                    u->first_vacation->fromaddr,
 792                                                    u->first_vacation->timestamp
 793                                         );
 794                         }
 795                         vptr = u->first_vacation;
 796                         u->first_vacation = u->first_vacation->next;
 797                         free(vptr);
 798                 }
 799                 StrBufAppendPrintf(text, CTDLSIEVECONFIGSEPARATOR);
 800         }
 801
 802         if (yes_write_to_disk)
 803         {
 804                 /* Save the config */
 805                 quickie_message("Citadel", NULL, NULL, u->config_roomname,
 806                                 ChrPtr(text),
 807                                 4,
 808                                 "Sieve configuration"
 809                 );
 810
 811                 /* And delete the old one */
 812                 if (u->config_msgnum > 0) {
 813                         CtdlDeleteMessages(u->config_roomname, &u->config_msgnum, 1, "");
 814                 }
 815         }
 816
 817         FreeStrBuf (&text);
 818
 819 }
 820
 821
 822 /*
 823  * This is our callback registration table for libSieve.
 824  */
 825 sieve2_callback_t ctdl_sieve_callbacks[] = {
 826         { SIEVE2_ACTION_REJECT,         ctdl_reject             },
 827         { SIEVE2_ACTION_VACATION,       ctdl_vacation           },
 828         { SIEVE2_ERRCALL_PARSE,         ctdl_errparse           },
 829         { SIEVE2_ERRCALL_RUNTIME,       ctdl_errexec            },
 830         { SIEVE2_ACTION_FILEINTO,       ctdl_fileinto           },
 831         { SIEVE2_ACTION_REDIRECT,       ctdl_redirect           },
 832         { SIEVE2_ACTION_DISCARD,        ctdl_discard            },
 833         { SIEVE2_ACTION_KEEP,           ctdl_keep               },
 834         { SIEVE2_SCRIPT_GETSCRIPT,      ctdl_getscript          },
 835         { SIEVE2_DEBUG_TRACE,           ctdl_debug              },
 836         { SIEVE2_MESSAGE_GETALLHEADERS, ctdl_getheaders         },
 837         { SIEVE2_MESSAGE_GETSIZE,       ctdl_getsize            },
 838         { SIEVE2_MESSAGE_GETENVELOPE,   ctdl_getenvelope        },
 839 /*
 840  * These actions are unsupported by Citadel so we don't declare them.
 841  *
 842         { SIEVE2_ACTION_NOTIFY,         ctdl_notify             },
 843         { SIEVE2_MESSAGE_GETSUBADDRESS, ctdl_getsubaddress      },
 844         { SIEVE2_MESSAGE_GETBODY,       ctdl_getbody            },
 845  *
 846  */
 847         { 0 }
 848 };
 849
 850
 851 /*
 852  * Perform sieve processing for a single room
 853  */
 854 void sieve_do_room(char *roomname) {
 855
 856         struct sdm_userdata u;
 857         sieve2_context_t *sieve2_context = NULL;        /* Context for sieve parser */
 858         int res;                                        /* Return code from libsieve calls */
 859         long orig_lastproc = 0;
 860
 861         memset(&u, 0, sizeof u);
 862
 863         /* See if the user who owns this 'mailbox' has any Sieve scripts that
 864          * require execution.
 865          */
 866         snprintf(u.config_roomname, sizeof u.config_roomname, "%010ld.%s", atol(roomname), USERCONFIGROOM);
 867         if (CtdlGetRoom(&CC->room, u.config_roomname) != 0) {
 868                 syslog(LOG_DEBUG, "<%s> does not exist.  No processing is required.\n", u.config_roomname);
 869                 return;
 870         }
 871
 872         /*
 873          * Find the sieve scripts and control record and do something
 874          */
 875         u.config_msgnum = (-1);
 876         CtdlForEachMessage(MSGS_LAST, 1, NULL, SIEVECONFIG, NULL,
 877                 get_sieve_config_backend, (void *)&u );
 878
 879         if (u.config_msgnum < 0) {
 880                 syslog(LOG_DEBUG, "No Sieve rules exist.  No processing is required.\n");
 881                 return;
 882         }
 883
 884         syslog(LOG_DEBUG, "Rules found.  Performing Sieve processing for <%s>\n", roomname);
 885
 886         if (CtdlGetRoom(&CC->room, roomname) != 0) {
 887                 syslog(LOG_CRIT, "ERROR: cannot load <%s>\n", roomname);
 888                 return;
 889         }
 890
 891         /* Initialize the Sieve parser */
 892
 893         res = sieve2_alloc(&sieve2_context);
 894         if (res != SIEVE2_OK) {
 895                 syslog(LOG_CRIT, "sieve2_alloc() returned %d: %s\n", res, sieve2_errstr(res));
 896                 return;
 897         }
 898
 899         res = sieve2_callbacks(sieve2_context, ctdl_sieve_callbacks);
 900         if (res != SIEVE2_OK) {
 901                 syslog(LOG_CRIT, "sieve2_callbacks() returned %d: %s\n", res, sieve2_errstr(res));
 902                 goto BAIL;
 903         }
 904
 905         /* Validate the script */
 906
 907         struct ctdl_sieve my;           /* dummy ctdl_sieve struct just to pass "u" slong */
 908         memset(&my, 0, sizeof my);
 909         my.u = &u;
 910         res = sieve2_validate(sieve2_context, &my);
 911         if (res != SIEVE2_OK) {
 912                 syslog(LOG_CRIT, "sieve2_validate() returned %d: %s\n", res, sieve2_errstr(res));
 913                 goto BAIL;
 914         }
 915
 916         /* Do something useful */
 917         u.sieve2_context = sieve2_context;
 918         orig_lastproc = u.lastproc;
 919         CtdlForEachMessage(MSGS_GT, u.lastproc, NULL, NULL, NULL,
 920                 sieve_do_msg,
 921                 (void *) &u
 922         );
 923
 924 BAIL:
 925         res = sieve2_free(&sieve2_context);
 926         if (res != SIEVE2_OK) {
 927                 syslog(LOG_CRIT, "sieve2_free() returned %d: %s\n", res, sieve2_errstr(res));
 928         }
 929
 930         /* Rewrite the config if we have to */
 931         rewrite_ctdl_sieve_config(&u, (u.lastproc > orig_lastproc) ) ;
 932 }
 933
 934
 935 /*
 936  * Perform sieve processing for all rooms which require it
 937  */
 938 void perform_sieve_processing(void) {
 939         struct RoomProcList *ptr = NULL;
 940
 941         if (sieve_list != NULL) {
 942                 syslog(LOG_DEBUG, "Begin Sieve processing\n");
 943                 while (sieve_list != NULL) {
 944                         char spoolroomname[ROOMNAMELEN];
 945                         safestrncpy(spoolroomname, sieve_list->name, sizeof spoolroomname);
 946                         begin_critical_section(S_SIEVELIST);
 947
 948                         /* pop this record off the list */
 949                         ptr = sieve_list;
 950                         sieve_list = sieve_list->next;
 951                         free(ptr);
 952
 953                         /* invalidate any duplicate entries to prevent double processing */
 954                         for (ptr=sieve_list; ptr!=NULL; ptr=ptr->next) {
 955                                 if (!strcasecmp(ptr->name, spoolroomname)) {
 956                                         ptr->name[0] = 0;
 957                                 }
 958                         }
 959
 960                         end_critical_section(S_SIEVELIST);
 961                         if (spoolroomname[0] != 0) {
 962                                 sieve_do_room(spoolroomname);
 963                         }
 964                 }
 965         }
 966 }
 967
 968
 969 void msiv_load(struct sdm_userdata *u) {
 970         char hold_rm[ROOMNAMELEN];
 971
 972         strcpy(hold_rm, CC->room.QRname);       /* save current room */
 973
 974         /* Take a spin through the user's personal address book */
 975         if (CtdlGetRoom(&CC->room, USERCONFIGROOM) == 0) {
 976
 977                 u->config_msgnum = (-1);
 978                 strcpy(u->config_roomname, CC->room.QRname);
 979                 CtdlForEachMessage(MSGS_LAST, 1, NULL, SIEVECONFIG, NULL,
 980                         get_sieve_config_backend, (void *)u );
 981
 982         }
 983
 984         if (strcmp(CC->room.QRname, hold_rm)) {
 985                 CtdlGetRoom(&CC->room, hold_rm);    /* return to saved room */
 986         }
 987 }
 988
 989 void msiv_store(struct sdm_userdata *u, int yes_write_to_disk) {
 990 /*
 991  * Initialise the sieve configs last processed message number.
 992  * We don't need to get the highest message number for the users inbox since the systems
 993  * highest message number will be higher than that and loer than this scripts message number
 994  * This prevents this new script from processing any old messages in the inbox.
 995  * Most importantly it will prevent vacation messages being sent to lots of old messages
 996  * in the inbox.
 997  */
 998         u->lastproc = CtdlGetCurrentMessageNumber();
 999         rewrite_ctdl_sieve_config(u, yes_write_to_disk);
1000 }
1001
1002
1003 /*
1004  * Select the active script.
1005  * (Set script_name to an empty string to disable all scripts)
1006  *
1007  * Returns 0 on success or nonzero for error.
1008  */
1009 int msiv_setactive(struct sdm_userdata *u, char *script_name) {
1010         int ok = 0;
1011         struct sdm_script *s;
1012
1013         /* First see if the supplied value is ok */
1014
1015         if (IsEmptyStr(script_name)) {
1016                 ok = 1;
1017         }
1018         else {
1019                 for (s=u->first_script; s!=NULL; s=s->next) {
1020                         if (!strcasecmp(s->script_name, script_name)) {
1021                                 ok = 1;
1022                         }
1023                 }
1024         }
1025
1026         if (!ok) return(-1);
1027
1028         /* Now set the active script */
1029         for (s=u->first_script; s!=NULL; s=s->next) {
1030                 if (!strcasecmp(s->script_name, script_name)) {
1031                         s->script_active = 1;
1032                 }
1033                 else {
1034                         s->script_active = 0;
1035                 }
1036         }
1037
1038         return(0);
1039 }
1040
1041
1042 /*
1043  * Fetch a script by name.
1044  *
1045  * Returns NULL if the named script was not found, or a pointer to the script
1046  * if it was found.   NOTE: the caller does *not* own the memory returned by
1047  * this function.  Copy it if you need to keep it.
1048  */
1049 char *msiv_getscript(struct sdm_userdata *u, char *script_name) {
1050         struct sdm_script *s;
1051
1052         for (s=u->first_script; s!=NULL; s=s->next) {
1053                 if (!strcasecmp(s->script_name, script_name)) {
1054                         if (s->script_content != NULL) {
1055                                 return (s->script_content);
1056                         }
1057                 }
1058         }
1059
1060         return(NULL);
1061 }
1062
1063
1064 /*
1065  * Delete a script by name.
1066  *
1067  * Returns 0 if the script was deleted.
1068  *       1 if the script was not found.
1069  *       2 if the script cannot be deleted because it is active.
1070  */
1071 int msiv_deletescript(struct sdm_userdata *u, char *script_name) {
1072         struct sdm_script *s = NULL;
1073         struct sdm_script *script_to_delete = NULL;
1074
1075         for (s=u->first_script; s!=NULL; s=s->next) {
1076                 if (!strcasecmp(s->script_name, script_name)) {
1077                         script_to_delete = s;
1078                         if (s->script_active) {
1079                                 return(2);
1080                         }
1081                 }
1082         }
1083
1084         if (script_to_delete == NULL) return(1);
1085
1086         if (u->first_script == script_to_delete) {
1087                 u->first_script = u->first_script->next;
1088         }
1089         else for (s=u->first_script; s!=NULL; s=s->next) {
1090                 if (s->next == script_to_delete) {
1091                         s->next = s->next->next;
1092                 }
1093         }
1094
1095         free(script_to_delete->script_content);
1096         free(script_to_delete);
1097         return(0);
1098 }
1099
1100
1101 /*
1102  * Add or replace a new script.
1103  * NOTE: after this function returns, "u" owns the memory that "script_content"
1104  * was pointing to.
1105  */
1106 void msiv_putscript(struct sdm_userdata *u, char *script_name, char *script_content) {
1107         int replaced = 0;
1108         struct sdm_script *s, *sptr;
1109
1110         for (s=u->first_script; s!=NULL; s=s->next) {
1111                 if (!strcasecmp(s->script_name, script_name)) {
1112                         if (s->script_content != NULL) {
1113                                 free(s->script_content);
1114                         }
1115                         s->script_content = script_content;
1116                         replaced = 1;
1117                 }
1118         }
1119
1120         if (replaced == 0) {
1121                 sptr = malloc(sizeof(struct sdm_script));
1122                 safestrncpy(sptr->script_name, script_name, sizeof sptr->script_name);
1123                 sptr->script_content = script_content;
1124                 sptr->script_active = 0;
1125                 sptr->next = u->first_script;
1126                 u->first_script = sptr;
1127         }
1128 }
1129
1130
1131
1132 /*
1133  * Citadel protocol to manage sieve scripts.
1134  * This is basically a simplified (read: doesn't resemble IMAP) version
1135  * of the 'managesieve' protocol.
1136  */
1137 void cmd_msiv(char *argbuf) {
1138         char subcmd[256];
1139         struct sdm_userdata u;
1140         char script_name[256];
1141         char *script_content = NULL;
1142         struct sdm_script *s;
1143         int i;
1144         int changes_made = 0;
1145
1146         memset(&u, 0, sizeof(struct sdm_userdata));
1147
1148         if (CtdlAccessCheck(ac_logged_in)) return;
1149         extract_token(subcmd, argbuf, 0, '|', sizeof subcmd);
1150         msiv_load(&u);
1151
1152         if (!strcasecmp(subcmd, "putscript")) {
1153                 extract_token(script_name, argbuf, 1, '|', sizeof script_name);
1154                 if (!IsEmptyStr(script_name)) {
1155                         cprintf("%d Transmit script now\n", SEND_LISTING);
1156                         script_content = CtdlReadMessageBody(HKEY("000"), config.c_maxmsglen, NULL, 0, 0);
1157                         msiv_putscript(&u, script_name, script_content);
1158                         changes_made = 1;
1159                 }
1160                 else {
1161                         cprintf("%d Invalid script name.\n", ERROR + ILLEGAL_VALUE);
1162                 }
1163         }
1164
1165         else if (!strcasecmp(subcmd, "listscripts")) {
1166                 cprintf("%d Scripts:\n", LISTING_FOLLOWS);
1167                 for (s=u.first_script; s!=NULL; s=s->next) {
1168                         if (s->script_content != NULL) {
1169                                 cprintf("%s|%d|\n", s->script_name, s->script_active);
1170                         }
1171                 }
1172                 cprintf("000\n");
1173         }
1174
1175         else if (!strcasecmp(subcmd, "setactive")) {
1176                 extract_token(script_name, argbuf, 1, '|', sizeof script_name);
1177                 if (msiv_setactive(&u, script_name) == 0) {
1178                         cprintf("%d ok\n", CIT_OK);
1179                         changes_made = 1;
1180                 }
1181                 else {
1182                         cprintf("%d Script '%s' does not exist.\n",
1183                                 ERROR + ILLEGAL_VALUE,
1184                                 script_name
1185                         );
1186                 }
1187         }
1188
1189         else if (!strcasecmp(subcmd, "getscript")) {
1190                 extract_token(script_name, argbuf, 1, '|', sizeof script_name);
1191                 script_content = msiv_getscript(&u, script_name);
1192                 if (script_content != NULL) {
1193                         int script_len;
1194
1195                         cprintf("%d Script:\n", LISTING_FOLLOWS);
1196                         script_len = strlen(script_content);
1197                         client_write(script_content, script_len);
1198                         if (script_content[script_len-1] != '\n') {
1199                                 cprintf("\n");
1200                         }
1201                         cprintf("000\n");
1202                 }
1203                 else {
1204                         cprintf("%d Invalid script name.\n", ERROR + ILLEGAL_VALUE);
1205                 }
1206         }
1207
1208         else if (!strcasecmp(subcmd, "deletescript")) {
1209                 extract_token(script_name, argbuf, 1, '|', sizeof script_name);
1210                 i = msiv_deletescript(&u, script_name);
1211                 if (i == 0) {
1212                         cprintf("%d ok\n", CIT_OK);
1213                         changes_made = 1;
1214                 }
1215                 else if (i == 1) {
1216                         cprintf("%d Script '%s' does not exist.\n",
1217                                 ERROR + ILLEGAL_VALUE,
1218                                 script_name
1219                         );
1220                 }
1221                 else if (i == 2) {
1222                         cprintf("%d Script '%s' is active and cannot be deleted.\n",
1223                                 ERROR + ILLEGAL_VALUE,
1224                                 script_name
1225                         );
1226                 }
1227                 else {
1228                         cprintf("%d unknown error\n", ERROR);
1229                 }
1230         }
1231
1232         else {
1233                 cprintf("%d Invalid subcommand\n", ERROR + CMD_NOT_SUPPORTED);
1234         }
1235
1236         msiv_store(&u, changes_made);
1237 }
1238
1239
1240
1241 void ctdl_sieve_init(void) {
1242         char *cred = NULL;
1243         sieve2_context_t *sieve2_context = NULL;
1244         int res;
1245
1246         /*
1247          *      We don't really care about dumping the entire credits to the log
1248          *      every time the server is initialized.  The documentation will suffice
1249          *      for that purpose.  We are making a call to sieve2_credits() in order
1250          *      to demonstrate that we have successfully linked in to libsieve.
1251          */
1252         cred = strdup(sieve2_credits());
1253         if (cred == NULL) return;
1254
1255         if (strlen(cred) > 60) {
1256                 strcpy(&cred[55], "...");
1257         }
1258
1259         syslog(LOG_INFO, "%s\n",cred);
1260         free(cred);
1261
1262         /* Briefly initialize a Sieve parser instance just so we can list the
1263          * extensions that are available.
1264          */
1265         res = sieve2_alloc(&sieve2_context);
1266         if (res != SIEVE2_OK) {
1267                 syslog(LOG_CRIT, "sieve2_alloc() returned %d: %s\n", res, sieve2_errstr(res));
1268                 return;
1269         }
1270
1271         res = sieve2_callbacks(sieve2_context, ctdl_sieve_callbacks);
1272         if (res != SIEVE2_OK) {
1273                 syslog(LOG_CRIT, "sieve2_callbacks() returned %d: %s\n", res, sieve2_errstr(res));
1274                 goto BAIL;
1275         }
1276
1277         msiv_extensions = strdup(sieve2_listextensions(sieve2_context));
1278         syslog(LOG_INFO, "Extensions: %s\n", msiv_extensions);
1279
1280 BAIL:   res = sieve2_free(&sieve2_context);
1281         if (res != SIEVE2_OK) {
1282                 syslog(LOG_CRIT, "sieve2_free() returned %d: %s\n", res, sieve2_errstr(res));
1283         }
1284
1285 }
1286
1287 void cleanup_sieve(void)
1288 {
1289         struct RoomProcList *ptr, *ptr2;
1290
1291         if (msiv_extensions != NULL)
1292                 free(msiv_extensions);
1293         msiv_extensions = NULL;
1294
1295         begin_critical_section(S_SIEVELIST);
1296         ptr=sieve_list;
1297         while (ptr != NULL) {
1298                 ptr2 = ptr->next;
1299                 free(ptr);
1300                 ptr = ptr2;
1301         }
1302         sieve_list = NULL;
1303         end_critical_section(S_SIEVELIST);
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                 CtdlRegisterCleanupHook(cleanup_sieve);
1324         }
1325
1326         /* return our Subversion id for the Log */
1327         return "sieve";
1328 }
1329