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
  46
  47 #include "ctdl_module.h"
  48
  49
  50 #ifdef HAVE_LIBSIEVE
  51
  52 #include "serv_sieve.h"
  53
  54 struct RoomProcList *sieve_list = NULL;
  55 char *msiv_extensions = NULL;
  56
  57
  58 /*
  59  * Callback function to send libSieve trace messages to Citadel log facility
  60  */
  61 int ctdl_debug(sieve2_context_t *s, void *my)
  62 {
  63         lprintf(CTDL_DEBUG, "Sieve: %s\n", sieve2_getvalue_string(s, "message"));
  64         return SIEVE2_OK;
  65 }
  66
  67
  68 /*
  69  * Callback function to log script parsing errors
  70  */
  71 int ctdl_errparse(sieve2_context_t *s, void *my)
  72 {
  73         lprintf(CTDL_WARNING, "Error in script, line %d: %s\n",
  74                 sieve2_getvalue_int(s, "lineno"),
  75                 sieve2_getvalue_string(s, "message")
  76         );
  77         return SIEVE2_OK;
  78 }
  79
  80
  81 /*
  82  * Callback function to log script execution errors
  83  */
  84 int ctdl_errexec(sieve2_context_t *s, void *my)
  85 {
  86         lprintf(CTDL_WARNING, "Error executing script: %s\n",
  87                 sieve2_getvalue_string(s, "message")
  88         );
  89         return SIEVE2_OK;
  90 }
  91
  92
  93 /*
  94  * Callback function to redirect a message to a different folder
  95  */
  96 int ctdl_redirect(sieve2_context_t *s, void *my)
  97 {
  98         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
  99         struct CtdlMessage *msg = NULL;
 100         struct recptypes *valid = NULL;
 101         char recp[256];
 102
 103         safestrncpy(recp, sieve2_getvalue_string(s, "address"), sizeof recp);
 104
 105         lprintf(CTDL_DEBUG, "Action is REDIRECT, recipient <%s>\n", recp);
 106
 107         valid = validate_recipients(recp, NULL, 0);
 108         if (valid == NULL) {
 109                 lprintf(CTDL_WARNING, "REDIRECT failed: bad recipient <%s>\n", recp);
 110                 return SIEVE2_ERROR_BADARGS;
 111         }
 112         if (valid->num_error > 0) {
 113                 lprintf(CTDL_WARNING, "REDIRECT failed: bad recipient <%s>\n", recp);
 114                 free_recipients(valid);
 115                 return SIEVE2_ERROR_BADARGS;
 116         }
 117
 118         msg = CtdlFetchMessage(cs->msgnum, 1);
 119         if (msg == NULL) {
 120                 lprintf(CTDL_WARNING, "REDIRECT failed: unable to fetch msg %ld\n", cs->msgnum);
 121                 free_recipients(valid);
 122                 return SIEVE2_ERROR_BADARGS;
 123         }
 124
 125         CtdlSubmitMsg(msg, valid, NULL);
 126         cs->cancel_implicit_keep = 1;
 127         free_recipients(valid);
 128         CtdlFreeMessage(msg);
 129         return SIEVE2_OK;
 130 }
 131
 132
 133 /*
 134  * Callback function to indicate that a message *will* be kept in the inbox
 135  */
 136 int ctdl_keep(sieve2_context_t *s, void *my)
 137 {
 138         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 139
 140         lprintf(CTDL_DEBUG, "Action is KEEP\n");
 141
 142         cs->keep = 1;
 143         cs->cancel_implicit_keep = 1;
 144         return SIEVE2_OK;
 145 }
 146
 147
 148 /*
 149  * Callback function to file a message into a different mailbox
 150  */
 151 int ctdl_fileinto(sieve2_context_t *s, void *my)
 152 {
 153         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 154         const char *dest_folder = sieve2_getvalue_string(s, "mailbox");
 155         int c;
 156         char foldername[256];
 157         char original_room_name[ROOMNAMELEN];
 158
 159         lprintf(CTDL_DEBUG, "Action is FILEINTO, destination is <%s>\n", dest_folder);
 160
 161         /* FILEINTO 'INBOX' is the same thing as KEEP */
 162         if ( (!strcasecmp(dest_folder, "INBOX")) || (!strcasecmp(dest_folder, MAILROOM)) ) {
 163                 cs->keep = 1;
 164                 cs->cancel_implicit_keep = 1;
 165                 return SIEVE2_OK;
 166         }
 167
 168         /* Remember what room we came from */
 169         safestrncpy(original_room_name, CC->room.QRname, sizeof original_room_name);
 170
 171         /* First try a mailbox name match (check personal mail folders first) */
 172         snprintf(foldername, sizeof foldername, "%010ld.%s", cs->usernum, dest_folder);
 173         c = getroom(&CC->room, foldername);
 174
 175         /* Then a regular room name match (public and private rooms) */
 176         if (c != 0) {
 177                 safestrncpy(foldername, dest_folder, sizeof foldername);
 178                 c = getroom(&CC->room, foldername);
 179         }
 180
 181         if (c != 0) {
 182                 lprintf(CTDL_WARNING, "FILEINTO failed: target <%s> does not exist\n", dest_folder);
 183                 return SIEVE2_ERROR_BADARGS;
 184         }
 185
 186         /* Yes, we actually have to go there */
 187         usergoto(NULL, 0, 0, NULL, NULL);
 188
 189         c = CtdlSaveMsgPointersInRoom(NULL, &cs->msgnum, 1, 0, NULL);
 190
 191         /* Go back to the room we came from */
 192         if (strcasecmp(original_room_name, CC->room.QRname)) {
 193                 usergoto(original_room_name, 0, 0, NULL, NULL);
 194         }
 195
 196         if (c == 0) {
 197                 cs->cancel_implicit_keep = 1;
 198                 return SIEVE2_OK;
 199         }
 200         else {
 201                 return SIEVE2_ERROR_BADARGS;
 202         }
 203 }
 204
 205
 206 /*
 207  * Callback function to indicate that a message should be discarded.
 208  */
 209 int ctdl_discard(sieve2_context_t *s, void *my)
 210 {
 211         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 212
 213         lprintf(CTDL_DEBUG, "Action is DISCARD\n");
 214
 215         /* Cancel the implicit keep.  That's all there is to it. */
 216         cs->cancel_implicit_keep = 1;
 217         return SIEVE2_OK;
 218 }
 219
 220
 221
 222 /*
 223  * Callback function to indicate that a message should be rejected
 224  */
 225 int ctdl_reject(sieve2_context_t *s, void *my)
 226 {
 227         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 228         char *reject_text = NULL;
 229
 230         lprintf(CTDL_DEBUG, "Action is REJECT\n");
 231
 232         /* If we don't know who sent the message, do a DISCARD instead. */
 233         if (IsEmptyStr(cs->sender)) {
 234                 lprintf(CTDL_INFO, "Unknown sender.  Doing DISCARD instead of REJECT.\n");
 235                 return ctdl_discard(s, my);
 236         }
 237
 238         /* Assemble the reject message. */
 239         reject_text = malloc(strlen(sieve2_getvalue_string(s, "message")) + 1024);
 240         if (reject_text == NULL) {
 241                 return SIEVE2_ERROR_FAIL;
 242         }
 243
 244         sprintf(reject_text,
 245                 "Content-type: text/plain\n"
 246                 "\n"
 247                 "The message was refused by the recipient's mail filtering program.\n"
 248                 "The reason given was as follows:\n"
 249                 "\n"
 250                 "%s\n"
 251                 "\n"
 252         ,
 253                 sieve2_getvalue_string(s, "message")
 254         );
 255
 256         quickie_message(        /* This delivers the message */
 257                 NULL,
 258                 cs->envelope_to,
 259                 cs->sender,
 260                 NULL,
 261                 reject_text,
 262                 FMT_RFC822,
 263                 "Delivery status notification"
 264         );
 265
 266         free(reject_text);
 267         cs->cancel_implicit_keep = 1;
 268         return SIEVE2_OK;
 269 }
 270
 271
 272
 273 /*
 274  * Callback function to indicate that a vacation message should be generated
 275  */
 276 int ctdl_vacation(sieve2_context_t *s, void *my)
 277 {
 278         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 279         struct sdm_vacation *vptr;
 280         int days = 1;
 281         const char *message;
 282         char *vacamsg_text = NULL;
 283         char vacamsg_subject[1024];
 284
 285         lprintf(CTDL_DEBUG, "Action is VACATION\n");
 286
 287         message = sieve2_getvalue_string(s, "message");
 288         if (message == NULL) return SIEVE2_ERROR_BADARGS;
 289
 290         if (sieve2_getvalue_string(s, "subject") != NULL) {
 291                 safestrncpy(vacamsg_subject, sieve2_getvalue_string(s, "subject"), sizeof vacamsg_subject);
 292         }
 293         else {
 294                 snprintf(vacamsg_subject, sizeof vacamsg_subject, "Re: %s", cs->subject);
 295         }
 296
 297         days = sieve2_getvalue_int(s, "days");
 298         if (days < 1) days = 1;
 299         if (days > MAX_VACATION) days = MAX_VACATION;
 300
 301         /* Check to see whether we've already alerted this sender that we're on vacation. */
 302         for (vptr = cs->u->first_vacation; vptr != NULL; vptr = vptr->next) {
 303                 if (!strcasecmp(vptr->fromaddr, cs->sender)) {
 304                         if ( (time(NULL) - vptr->timestamp) < (days * 86400) ) {
 305                                 lprintf(CTDL_DEBUG, "Already alerted <%s> recently.\n", cs->sender);
 306                                 return SIEVE2_OK;
 307                         }
 308                 }
 309         }
 310
 311         /* Assemble the reject message. */
 312         vacamsg_text = malloc(strlen(message) + 1024);
 313         if (vacamsg_text == NULL) {
 314                 return SIEVE2_ERROR_FAIL;
 315         }
 316
 317         sprintf(vacamsg_text,
 318                 "Content-type: text/plain\n"
 319                 "\n"
 320                 "%s\n"
 321                 "\n"
 322         ,
 323                 message
 324         );
 325
 326         quickie_message(        /* This delivers the message */
 327                 NULL,
 328                 cs->envelope_to,
 329                 cs->sender,
 330                 NULL,
 331                 vacamsg_text,
 332                 FMT_RFC822,
 333                 vacamsg_subject
 334         );
 335
 336         free(vacamsg_text);
 337
 338         /* Now update the list to reflect the fact that we've alerted this sender.
 339          * If they're already in the list, just update the timestamp.
 340          */
 341         for (vptr = cs->u->first_vacation; vptr != NULL; vptr = vptr->next) {
 342                 if (!strcasecmp(vptr->fromaddr, cs->sender)) {
 343                         vptr->timestamp = time(NULL);
 344                         return SIEVE2_OK;
 345                 }
 346         }
 347
 348         /* If we get to this point, create a new record.
 349          */
 350         vptr = malloc(sizeof(struct sdm_vacation));
 351         vptr->timestamp = time(NULL);
 352         safestrncpy(vptr->fromaddr, cs->sender, sizeof vptr->fromaddr);
 353         vptr->next = cs->u->first_vacation;
 354         cs->u->first_vacation = vptr;
 355
 356         return SIEVE2_OK;
 357 }
 358
 359
 360 /*
 361  * Callback function to parse addresses per local system convention
 362  * It is disabled because we don't support subaddresses.
 363  */
 364 #if 0
 365 int ctdl_getsubaddress(sieve2_context_t *s, void *my)
 366 {
 367         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 368
 369         /* libSieve does not take ownership of the memory used here.  But, since we
 370          * are just pointing to locations inside a struct which we are going to free
 371          * later, we're ok.
 372          */
 373         sieve2_setvalue_string(s, "user", cs->recp_user);
 374         sieve2_setvalue_string(s, "detail", "");
 375         sieve2_setvalue_string(s, "localpart", cs->recp_user);
 376         sieve2_setvalue_string(s, "domain", cs->recp_node);
 377         return SIEVE2_OK;
 378 }
 379 #endif
 380
 381
 382 /*
 383  * Callback function to parse message envelope
 384  */
 385 int ctdl_getenvelope(sieve2_context_t *s, void *my)
 386 {
 387         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 388
 389         lprintf(CTDL_DEBUG, "Action is GETENVELOPE\nEnvFrom: %s\n  EnvTo: %s\n",
 390                 cs->envelope_from, cs->envelope_to);
 391
 392         if (cs->envelope_from != NULL) {
 393                 if ((cs->envelope_from[0] != '@')&&(cs->envelope_from[strlen(cs->envelope_from)-1] != '@')) {
 394                         sieve2_setvalue_string(s, "from", cs->envelope_from);
 395                 }
 396                 else {
 397                         sieve2_setvalue_string(s, "from", "invalid_envelope_from@example.org");
 398                 }
 399         }
 400         else {
 401                 sieve2_setvalue_string(s, "from", "null_envelope_from@example.org");
 402         }
 403
 404
 405         if (cs->envelope_to != NULL) {
 406                 if ((cs->envelope_to[0] != '@') && (cs->envelope_to[strlen(cs->envelope_to)-1] != '@')) {
 407                         sieve2_setvalue_string(s, "to", cs->envelope_to);
 408                 }
 409                 else {
 410                         sieve2_setvalue_string(s, "to", "invalid_envelope_to@example.org");
 411                 }
 412         }
 413         else {
 414                 sieve2_setvalue_string(s, "to", "null_envelope_to@example.org");
 415         }
 416
 417         return SIEVE2_OK;
 418 }
 419
 420
 421 /*
 422  * Callback function to fetch message body
 423  * (Uncomment the code if we implement this extension)
 424  *
 425 int ctdl_getbody(sieve2_context_t *s, void *my)
 426 {
 427         return SIEVE2_ERROR_UNSUPPORTED;
 428 }
 429  *
 430  */
 431
 432
 433 /*
 434  * Callback function to fetch message size
 435  */
 436 int ctdl_getsize(sieve2_context_t *s, void *my)
 437 {
 438         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 439         struct MetaData smi;
 440
 441         GetMetaData(&smi, cs->msgnum);
 442
 443         if (smi.meta_rfc822_length > 0L) {
 444                 sieve2_setvalue_int(s, "size", (int)smi.meta_rfc822_length);
 445                 return SIEVE2_OK;
 446         }
 447
 448         return SIEVE2_ERROR_UNSUPPORTED;
 449 }
 450
 451
 452 /*
 453  * Callback function to retrieve the sieve script
 454  */
 455 int ctdl_getscript(sieve2_context_t *s, void *my) {
 456         struct sdm_script *sptr;
 457         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 458
 459         for (sptr=cs->u->first_script; sptr!=NULL; sptr=sptr->next) {
 460                 if (sptr->script_active > 0) {
 461                         lprintf(CTDL_DEBUG, "ctdl_getscript() is using script '%s'\n", sptr->script_name);
 462                         sieve2_setvalue_string(s, "script", sptr->script_content);
 463                         return SIEVE2_OK;
 464                 }
 465         }
 466
 467         lprintf(CTDL_DEBUG, "ctdl_getscript() found no active script\n");
 468         return SIEVE2_ERROR_GETSCRIPT;
 469 }
 470
 471 /*
 472  * Callback function to retrieve message headers
 473  */
 474 int ctdl_getheaders(sieve2_context_t *s, void *my) {
 475
 476         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 477
 478         lprintf(CTDL_DEBUG, "ctdl_getheaders() was called\n");
 479         sieve2_setvalue_string(s, "allheaders", cs->rfc822headers);
 480         return SIEVE2_OK;
 481 }
 482
 483
 484
 485 /*
 486  * Add a room to the list of those rooms which potentially require sieve processing
 487  */
 488 void sieve_queue_room(struct ctdlroom *which_room) {
 489         struct RoomProcList *ptr;
 490
 491         ptr = (struct RoomProcList *) malloc(sizeof (struct RoomProcList));
 492         if (ptr == NULL) return;
 493
 494         safestrncpy(ptr->name, which_room->QRname, sizeof ptr->name);
 495         begin_critical_section(S_SIEVELIST);
 496         ptr->next = sieve_list;
 497         sieve_list = ptr;
 498         end_critical_section(S_SIEVELIST);
 499         lprintf(CTDL_DEBUG, "<%s> queued for Sieve processing\n", which_room->QRname);
 500 }
 501
 502
 503
 504 /*
 505  * Perform sieve processing for one message (called by sieve_do_room() for each message)
 506  */
 507 void sieve_do_msg(long msgnum, void *userdata) {
 508         struct sdm_userdata *u = (struct sdm_userdata *) userdata;
 509         sieve2_context_t *sieve2_context;
 510         struct ctdl_sieve my;
 511         int res;
 512         struct CtdlMessage *msg;
 513         int i;
 514         size_t headers_len = 0;
 515         int len = 0;
 516
 517         if (userdata == NULL)
 518         {
 519                 lprintf(CTDL_EMERG, "Cant process Message <%ld>without Userdata!\n", msgnum);
 520                 return;
 521         }
 522
 523         sieve2_context = u->sieve2_context;
 524
 525         lprintf(CTDL_DEBUG, "Performing sieve processing on msg <%ld>\n", msgnum);
 526
 527         msg = CtdlFetchMessage(msgnum, 0);
 528         if (msg == NULL) return;
 529
 530         /*
 531          * Grab the message headers so we can feed them to libSieve.
 532          */
 533         CC->redirect_buffer = malloc(SIZ);
 534         CC->redirect_len = 0;
 535         CC->redirect_alloc = SIZ;
 536         CtdlOutputPreLoadedMsg(msg, MT_RFC822, HEADERS_ONLY, 0, 1);
 537         my.rfc822headers = CC->redirect_buffer;
 538         headers_len = CC->redirect_len;
 539         CC->redirect_buffer = NULL;
 540         CC->redirect_len = 0;
 541         CC->redirect_alloc = 0;
 542
 543         /*
 544          * libSieve clobbers the stack if it encounters badly formed
 545          * headers.  Sanitize our headers by stripping nonprintable
 546          * characters.
 547          */
 548         for (i=0; i<headers_len; ++i) {
 549                 if (!isascii(my.rfc822headers[i])) {
 550                         my.rfc822headers[i] = '_';
 551                 }
 552         }
 553
 554         my.keep = 0;                            /* Set to 1 to declare an *explicit* keep */
 555         my.cancel_implicit_keep = 0;            /* Some actions will cancel the implicit keep */
 556         my.usernum = atol(CC->room.QRname);     /* Keep track of the owner of the room's namespace */
 557         my.msgnum = msgnum;                     /* Keep track of the message number in our local store */
 558         my.u = u;                               /* Hand off a pointer to the rest of this info */
 559
 560         /* Keep track of the recipient so we can do handling based on it later */
 561         process_rfc822_addr(msg->cm_fields['R'], my.recp_user, my.recp_node, my.recp_name);
 562
 563         /* Keep track of the sender so we can use it for REJECT and VACATION responses */
 564         if (msg->cm_fields['F'] != NULL) {
 565                 safestrncpy(my.sender, msg->cm_fields['F'], sizeof my.sender);
 566         }
 567         else if ( (msg->cm_fields['A'] != NULL) && (msg->cm_fields['N'] != NULL) ) {
 568                 snprintf(my.sender, sizeof my.sender, "%s@%s", msg->cm_fields['A'], msg->cm_fields['N']);
 569         }
 570         else if (msg->cm_fields['A'] != NULL) {
 571                 safestrncpy(my.sender, msg->cm_fields['A'], sizeof my.sender);
 572         }
 573         else {
 574                 strcpy(my.sender, "");
 575         }
 576
 577         /* Keep track of the subject so we can use it for VACATION responses */
 578         if (msg->cm_fields['U'] != NULL) {
 579                 safestrncpy(my.subject, msg->cm_fields['U'], sizeof my.subject);
 580         }
 581         else {
 582                 strcpy(my.subject, "");
 583         }
 584
 585         /* Keep track of the envelope-from address (use body-from if not found) */
 586         if (msg->cm_fields['P'] != NULL) {
 587                 safestrncpy(my.envelope_from, msg->cm_fields['P'], sizeof my.envelope_from);
 588                 stripallbut(my.envelope_from, '<', '>');
 589         }
 590         else if (msg->cm_fields['F'] != NULL) {
 591                 safestrncpy(my.envelope_from, msg->cm_fields['F'], sizeof my.envelope_from);
 592                 stripallbut(my.envelope_from, '<', '>');
 593         }
 594         else {
 595                 strcpy(my.envelope_from, "");
 596         }
 597
 598         len = strlen(my.envelope_from);
 599         for (i=0; i<len; ++i) {
 600                 if (isspace(my.envelope_from[i])) my.envelope_from[i] = '_';
 601         }
 602         if (haschar(my.envelope_from, '@') == 0) {
 603                 strcat(my.envelope_from, "@");
 604                 strcat(my.envelope_from, config.c_fqdn);
 605         }
 606
 607         /* Keep track of the envelope-to address (use body-to if not found) */
 608         if (msg->cm_fields['V'] != NULL) {
 609                 safestrncpy(my.envelope_to, msg->cm_fields['V'], sizeof my.envelope_to);
 610                 stripallbut(my.envelope_to, '<', '>');
 611         }
 612         else if (msg->cm_fields['R'] != NULL) {
 613                 safestrncpy(my.envelope_to, msg->cm_fields['R'], sizeof my.envelope_to);
 614                 if (msg->cm_fields['D'] != NULL) {
 615                         strcat(my.envelope_to, "@");
 616                         strcat(my.envelope_to, msg->cm_fields['D']);
 617                 }
 618                 stripallbut(my.envelope_to, '<', '>');
 619         }
 620         else {
 621                 strcpy(my.envelope_to, "");
 622         }
 623
 624         len = strlen(my.envelope_to);
 625         for (i=0; i<len; ++i) {
 626                 if (isspace(my.envelope_to[i])) my.envelope_to[i] = '_';
 627         }
 628         if (haschar(my.envelope_to, '@') == 0) {
 629                 strcat(my.envelope_to, "@");
 630                 strcat(my.envelope_to, config.c_fqdn);
 631         }
 632
 633         CtdlFreeMessage(msg);
 634
 635         sieve2_setvalue_string(sieve2_context, "allheaders", my.rfc822headers);
 636
 637         lprintf(CTDL_DEBUG, "Calling sieve2_execute()\n");
 638         res = sieve2_execute(sieve2_context, &my);
 639         if (res != SIEVE2_OK) {
 640                 lprintf(CTDL_CRIT, "sieve2_execute() returned %d: %s\n", res, sieve2_errstr(res));
 641         }
 642
 643         free(my.rfc822headers);
 644         my.rfc822headers = NULL;
 645
 646         /*
 647          * Delete the message from the inbox unless either we were told not to, or
 648          * if no other action was successfully taken.
 649          */
 650         if ( (!my.keep) && (my.cancel_implicit_keep) ) {
 651                 lprintf(CTDL_DEBUG, "keep is 0 -- deleting message from inbox\n");
 652                 CtdlDeleteMessages(CC->room.QRname, &msgnum, 1, "");
 653         }
 654
 655         lprintf(CTDL_DEBUG, "Completed sieve processing on msg <%ld>\n", msgnum);
 656         u->lastproc = msgnum;
 657
 658         return;
 659 }
 660
 661
 662
 663 /*
 664  * Given the on-disk representation of our Sieve config, load
 665  * it into an in-memory data structure.
 666  */
 667 void parse_sieve_config(char *conf, struct sdm_userdata *u) {
 668         char *ptr;
 669         char *c, *vacrec;
 670         char keyword[256];
 671         struct sdm_script *sptr;
 672         struct sdm_vacation *vptr;
 673
 674         ptr = conf;
 675         while (c = ptr, ptr = bmstrcasestr(ptr, CTDLSIEVECONFIGSEPARATOR), ptr != NULL) {
 676                 *ptr = 0;
 677                 ptr += strlen(CTDLSIEVECONFIGSEPARATOR);
 678
 679                 extract_token(keyword, c, 0, '|', sizeof keyword);
 680
 681                 if (!strcasecmp(keyword, "lastproc")) {
 682                         u->lastproc = extract_long(c, 1);
 683                 }
 684
 685                 else if (!strcasecmp(keyword, "script")) {
 686                         sptr = malloc(sizeof(struct sdm_script));
 687                         extract_token(sptr->script_name, c, 1, '|', sizeof sptr->script_name);
 688                         sptr->script_active = extract_int(c, 2);
 689                         remove_token(c, 0, '|');
 690                         remove_token(c, 0, '|');
 691                         remove_token(c, 0, '|');
 692                         sptr->script_content = strdup(c);
 693                         sptr->next = u->first_script;
 694                         u->first_script = sptr;
 695                 }
 696
 697                 else if (!strcasecmp(keyword, "vacation")) {
 698
 699                         if (c != NULL) while (vacrec=c, c=strchr(c, '\n'), (c != NULL)) {
 700
 701                                 *c = 0;
 702                                 ++c;
 703
 704                                 if (strncasecmp(vacrec, "vacation|", 9)) {
 705                                         vptr = malloc(sizeof(struct sdm_vacation));
 706                                         extract_token(vptr->fromaddr, vacrec, 0, '|', sizeof vptr->fromaddr);
 707                                         vptr->timestamp = extract_long(vacrec, 1);
 708                                         vptr->next = u->first_vacation;
 709                                         u->first_vacation = vptr;
 710                                 }
 711                         }
 712                 }
 713
 714                 /* ignore unknown keywords */
 715         }
 716 }
 717
 718 /*
 719  * We found the Sieve configuration for this user.
 720  * Now do something with it.
 721  */
 722 void get_sieve_config_backend(long msgnum, void *userdata) {
 723         struct sdm_userdata *u = (struct sdm_userdata *) userdata;
 724         struct CtdlMessage *msg;
 725         char *conf;
 726
 727         u->config_msgnum = msgnum;
 728         msg = CtdlFetchMessage(msgnum, 1);
 729         if (msg == NULL) {
 730                 u->config_msgnum = (-1) ;
 731                 return;
 732         }
 733
 734         conf = msg->cm_fields['M'];
 735         msg->cm_fields['M'] = NULL;
 736         CtdlFreeMessage(msg);
 737
 738         if (conf != NULL) {
 739                 parse_sieve_config(conf, u);
 740                 free(conf);
 741         }
 742
 743 }
 744
 745
 746 /*
 747  * Write our citadel sieve config back to disk
 748  *
 749  * (Set yes_write_to_disk to nonzero to make it actually write the config;
 750  * otherwise it just frees the data structures.)
 751  */
 752 void rewrite_ctdl_sieve_config(struct sdm_userdata *u, int yes_write_to_disk) {
 753         char *text;
 754         struct sdm_script *sptr;
 755         struct sdm_vacation *vptr;
 756         size_t tsize;
 757
 758         text = malloc(1024);
 759         tsize = 1024;
 760         snprintf(text, 1024,
 761                 "Content-type: application/x-citadel-sieve-config\n"
 762                 "\n"
 763                 CTDLSIEVECONFIGSEPARATOR
 764                 "lastproc|%ld"
 765                 CTDLSIEVECONFIGSEPARATOR
 766         ,
 767                 u->lastproc
 768         );
 769
 770         while (u->first_script != NULL) {
 771                 size_t tlen;
 772                 tlen = strlen(text);
 773                 tsize = tlen + strlen(u->first_script->script_content) +256;
 774                 text = realloc(text, tsize);
 775                 sprintf(&text[strlen(text)], "script|%s|%d|%s" CTDLSIEVECONFIGSEPARATOR,
 776                         u->first_script->script_name,
 777                         u->first_script->script_active,
 778                         u->first_script->script_content
 779                 );
 780                 sptr = u->first_script;
 781                 u->first_script = u->first_script->next;
 782                 free(sptr->script_content);
 783                 free(sptr);
 784         }
 785
 786         if (u->first_vacation != NULL) {
 787
 788                 tsize = strlen(text) + 256;
 789                 for (vptr = u->first_vacation; vptr != NULL; vptr = vptr->next) {
 790                         tsize += strlen(vptr->fromaddr + 32);
 791                 }
 792                 text = realloc(text, tsize);
 793
 794                 sprintf(&text[strlen(text)], "vacation|\n");
 795                 while (u->first_vacation != NULL) {
 796                         if ( (time(NULL) - u->first_vacation->timestamp) < (MAX_VACATION * 86400)) {
 797                                 sprintf(&text[strlen(text)], "%s|%ld\n",
 798                                         u->first_vacation->fromaddr,
 799                                         u->first_vacation->timestamp
 800                                 );
 801                         }
 802                         vptr = u->first_vacation;
 803                         u->first_vacation = u->first_vacation->next;
 804                         free(vptr);
 805                 }
 806                 sprintf(&text[strlen(text)], CTDLSIEVECONFIGSEPARATOR);
 807         }
 808
 809         if (yes_write_to_disk)
 810         {
 811                 /* Save the config */
 812                 quickie_message("Citadel", NULL, NULL, u->config_roomname,
 813                                 text,
 814                                 4,
 815                                 "Sieve configuration"
 816                 );
 817
 818                 /* And delete the old one */
 819                 if (u->config_msgnum > 0) {
 820                         CtdlDeleteMessages(u->config_roomname, &u->config_msgnum, 1, "");
 821                 }
 822         }
 823
 824         free (text);
 825
 826 }
 827
 828
 829 /*
 830  * This is our callback registration table for libSieve.
 831  */
 832 sieve2_callback_t ctdl_sieve_callbacks[] = {
 833         { SIEVE2_ACTION_REJECT,         ctdl_reject             },
 834         { SIEVE2_ACTION_VACATION,       ctdl_vacation           },
 835         { SIEVE2_ERRCALL_PARSE,         ctdl_errparse           },
 836         { SIEVE2_ERRCALL_RUNTIME,       ctdl_errexec            },
 837         { SIEVE2_ACTION_FILEINTO,       ctdl_fileinto           },
 838         { SIEVE2_ACTION_REDIRECT,       ctdl_redirect           },
 839         { SIEVE2_ACTION_DISCARD,        ctdl_discard            },
 840         { SIEVE2_ACTION_KEEP,           ctdl_keep               },
 841         { SIEVE2_SCRIPT_GETSCRIPT,      ctdl_getscript          },
 842         { SIEVE2_DEBUG_TRACE,           ctdl_debug              },
 843         { SIEVE2_MESSAGE_GETALLHEADERS, ctdl_getheaders         },
 844         { SIEVE2_MESSAGE_GETSIZE,       ctdl_getsize            },
 845         { SIEVE2_MESSAGE_GETENVELOPE,   ctdl_getenvelope        },
 846 /*
 847  * These actions are unsupported by Citadel so we don't declare them.
 848  *
 849         { SIEVE2_ACTION_NOTIFY,         ctdl_notify             },
 850         { SIEVE2_MESSAGE_GETSUBADDRESS, ctdl_getsubaddress      },
 851         { SIEVE2_MESSAGE_GETBODY,       ctdl_getbody            },
 852  *
 853  */
 854         { 0 }
 855 };
 856
 857
 858 /*
 859  * Perform sieve processing for a single room
 860  */
 861 void sieve_do_room(char *roomname) {
 862
 863         struct sdm_userdata u;
 864         sieve2_context_t *sieve2_context = NULL;        /* Context for sieve parser */
 865         int res;                                        /* Return code from libsieve calls */
 866         long orig_lastproc = 0;
 867
 868         memset(&u, 0, sizeof u);
 869
 870         /* See if the user who owns this 'mailbox' has any Sieve scripts that
 871          * require execution.
 872          */
 873         snprintf(u.config_roomname, sizeof u.config_roomname, "%010ld.%s", atol(roomname), USERCONFIGROOM);
 874         if (getroom(&CC->room, u.config_roomname) != 0) {
 875                 lprintf(CTDL_DEBUG, "<%s> does not exist.  No processing is required.\n", u.config_roomname);
 876                 return;
 877         }
 878
 879         /*
 880          * Find the sieve scripts and control record and do something
 881          */
 882         u.config_msgnum = (-1);
 883         CtdlForEachMessage(MSGS_LAST, 1, NULL, SIEVECONFIG, NULL,
 884                 get_sieve_config_backend, (void *)&u );
 885
 886         if (u.config_msgnum < 0) {
 887                 lprintf(CTDL_DEBUG, "No Sieve rules exist.  No processing is required.\n");
 888                 return;
 889         }
 890
 891         lprintf(CTDL_DEBUG, "Rules found.  Performing Sieve processing for <%s>\n", roomname);
 892
 893         if (getroom(&CC->room, roomname) != 0) {
 894                 lprintf(CTDL_CRIT, "ERROR: cannot load <%s>\n", roomname);
 895                 return;
 896         }
 897
 898         /* Initialize the Sieve parser */
 899
 900         res = sieve2_alloc(&sieve2_context);
 901         if (res != SIEVE2_OK) {
 902                 lprintf(CTDL_CRIT, "sieve2_alloc() returned %d: %s\n", res, sieve2_errstr(res));
 903                 return;
 904         }
 905
 906         res = sieve2_callbacks(sieve2_context, ctdl_sieve_callbacks);
 907         if (res != SIEVE2_OK) {
 908                 lprintf(CTDL_CRIT, "sieve2_callbacks() returned %d: %s\n", res, sieve2_errstr(res));
 909                 goto BAIL;
 910         }
 911
 912         /* Validate the script */
 913
 914         struct ctdl_sieve my;           /* dummy ctdl_sieve struct just to pass "u" slong */
 915         memset(&my, 0, sizeof my);
 916         my.u = &u;
 917         res = sieve2_validate(sieve2_context, &my);
 918         if (res != SIEVE2_OK) {
 919                 lprintf(CTDL_CRIT, "sieve2_validate() returned %d: %s\n", res, sieve2_errstr(res));
 920                 goto BAIL;
 921         }
 922
 923         /* Do something useful */
 924         u.sieve2_context = sieve2_context;
 925         orig_lastproc = u.lastproc;
 926         CtdlForEachMessage(MSGS_GT, u.lastproc, NULL, NULL, NULL,
 927                 sieve_do_msg,
 928                 (void *) &u
 929         );
 930
 931 BAIL:
 932         res = sieve2_free(&sieve2_context);
 933         if (res != SIEVE2_OK) {
 934                 lprintf(CTDL_CRIT, "sieve2_free() returned %d: %s\n", res, sieve2_errstr(res));
 935         }
 936
 937         /* Rewrite the config if we have to */
 938         rewrite_ctdl_sieve_config(&u, (u.lastproc > orig_lastproc) ) ;
 939 }
 940
 941
 942 /*
 943  * Perform sieve processing for all rooms which require it
 944  */
 945 void perform_sieve_processing(void) {
 946         struct RoomProcList *ptr = NULL;
 947
 948         if (sieve_list != NULL) {
 949                 lprintf(CTDL_DEBUG, "Begin Sieve processing\n");
 950                 while (sieve_list != NULL) {
 951                         char spoolroomname[ROOMNAMELEN];
 952                         safestrncpy(spoolroomname, sieve_list->name, sizeof spoolroomname);
 953                         begin_critical_section(S_SIEVELIST);
 954
 955                         /* pop this record off the list */
 956                         ptr = sieve_list;
 957                         sieve_list = sieve_list->next;
 958                         free(ptr);
 959
 960                         /* invalidate any duplicate entries to prevent double processing */
 961                         for (ptr=sieve_list; ptr!=NULL; ptr=ptr->next) {
 962                                 if (!strcasecmp(ptr->name, spoolroomname)) {
 963                                         ptr->name[0] = 0;
 964                                 }
 965                         }
 966
 967                         end_critical_section(S_SIEVELIST);
 968                         if (spoolroomname[0] != 0) {
 969                                 sieve_do_room(spoolroomname);
 970                         }
 971                 }
 972         }
 973 }
 974
 975
 976 void msiv_load(struct sdm_userdata *u) {
 977         char hold_rm[ROOMNAMELEN];
 978
 979         strcpy(hold_rm, CC->room.QRname);       /* save current room */
 980
 981         /* Take a spin through the user's personal address book */
 982         if (getroom(&CC->room, USERCONFIGROOM) == 0) {
 983
 984                 u->config_msgnum = (-1);
 985                 strcpy(u->config_roomname, CC->room.QRname);
 986                 CtdlForEachMessage(MSGS_LAST, 1, NULL, SIEVECONFIG, NULL,
 987                         get_sieve_config_backend, (void *)u );
 988
 989         }
 990
 991         if (strcmp(CC->room.QRname, hold_rm)) {
 992                 getroom(&CC->room, hold_rm);    /* return to saved room */
 993         }
 994 }
 995
 996 void msiv_store(struct sdm_userdata *u, int yes_write_to_disk) {
 997         rewrite_ctdl_sieve_config(u, yes_write_to_disk);
 998 }
 999
1000
1001 /*
1002  * Select the active script.
1003  * (Set script_name to an empty string to disable all scripts)
1004  *
1005  * Returns 0 on success or nonzero for error.
1006  */
1007 int msiv_setactive(struct sdm_userdata *u, char *script_name) {
1008         int ok = 0;
1009         struct sdm_script *s;
1010
1011         /* First see if the supplied value is ok */
1012
1013         if (IsEmptyStr(script_name)) {
1014                 ok = 1;
1015         }
1016         else {
1017                 for (s=u->first_script; s!=NULL; s=s->next) {
1018                         if (!strcasecmp(s->script_name, script_name)) {
1019                                 ok = 1;
1020                         }
1021                 }
1022         }
1023
1024         if (!ok) return(-1);
1025
1026         /* Now set the active script */
1027         for (s=u->first_script; s!=NULL; s=s->next) {
1028                 if (!strcasecmp(s->script_name, script_name)) {
1029                         s->script_active = 1;
1030                 }
1031                 else {
1032                         s->script_active = 0;
1033                 }
1034         }
1035
1036         return(0);
1037 }
1038
1039
1040 /*
1041  * Fetch a script by name.
1042  *
1043  * Returns NULL if the named script was not found, or a pointer to the script
1044  * if it was found.   NOTE: the caller does *not* own the memory returned by
1045  * this function.  Copy it if you need to keep it.
1046  */
1047 char *msiv_getscript(struct sdm_userdata *u, char *script_name) {
1048         struct sdm_script *s;
1049
1050         for (s=u->first_script; s!=NULL; s=s->next) {
1051                 if (!strcasecmp(s->script_name, script_name)) {
1052                         if (s->script_content != NULL) {
1053                                 return (s->script_content);
1054                         }
1055                 }
1056         }
1057
1058         return(NULL);
1059 }
1060
1061
1062 /*
1063  * Delete a script by name.
1064  *
1065  * Returns 0 if the script was deleted.
1066  *       1 if the script was not found.
1067  *       2 if the script cannot be deleted because it is active.
1068  */
1069 int msiv_deletescript(struct sdm_userdata *u, char *script_name) {
1070         struct sdm_script *s = NULL;
1071         struct sdm_script *script_to_delete = NULL;
1072
1073         for (s=u->first_script; s!=NULL; s=s->next) {
1074                 if (!strcasecmp(s->script_name, script_name)) {
1075                         script_to_delete = s;
1076                         if (s->script_active) {
1077                                 return(2);
1078                         }
1079                 }
1080         }
1081
1082         if (script_to_delete == NULL) return(1);
1083
1084         if (u->first_script == script_to_delete) {
1085                 u->first_script = u->first_script->next;
1086         }
1087         else for (s=u->first_script; s!=NULL; s=s->next) {
1088                 if (s->next == script_to_delete) {
1089                         s->next = s->next->next;
1090                 }
1091         }
1092
1093         free(script_to_delete->script_content);
1094         free(script_to_delete);
1095         return(0);
1096 }
1097
1098
1099 /*
1100  * Add or replace a new script.
1101  * NOTE: after this function returns, "u" owns the memory that "script_content"
1102  * was pointing to.
1103  */
1104 void msiv_putscript(struct sdm_userdata *u, char *script_name, char *script_content) {
1105         int replaced = 0;
1106         struct sdm_script *s, *sptr;
1107
1108         for (s=u->first_script; s!=NULL; s=s->next) {
1109                 if (!strcasecmp(s->script_name, script_name)) {
1110                         if (s->script_content != NULL) {
1111                                 free(s->script_content);
1112                         }
1113                         s->script_content = script_content;
1114                         replaced = 1;
1115                 }
1116         }
1117
1118         if (replaced == 0) {
1119                 sptr = malloc(sizeof(struct sdm_script));
1120                 safestrncpy(sptr->script_name, script_name, sizeof sptr->script_name);
1121                 sptr->script_content = script_content;
1122                 sptr->script_active = 0;
1123                 sptr->next = u->first_script;
1124                 u->first_script = sptr;
1125         }
1126 }
1127
1128
1129
1130 /*
1131  * Citadel protocol to manage sieve scripts.
1132  * This is basically a simplified (read: doesn't resemble IMAP) version
1133  * of the 'managesieve' protocol.
1134  */
1135 void cmd_msiv(char *argbuf) {
1136         char subcmd[256];
1137         struct sdm_userdata u;
1138         char script_name[256];
1139         char *script_content = NULL;
1140         struct sdm_script *s;
1141         int i;
1142         int changes_made = 0;
1143
1144         memset(&u, 0, sizeof(struct sdm_userdata));
1145
1146         if (CtdlAccessCheck(ac_logged_in)) return;
1147         extract_token(subcmd, argbuf, 0, '|', sizeof subcmd);
1148         msiv_load(&u);
1149
1150         if (!strcasecmp(subcmd, "putscript")) {
1151                 extract_token(script_name, argbuf, 1, '|', sizeof script_name);
1152                 if (!IsEmptyStr(script_name)) {
1153                         cprintf("%d Transmit script now\n", SEND_LISTING);
1154                         script_content = CtdlReadMessageBody("000", config.c_maxmsglen, NULL, 0, 0);
1155                         msiv_putscript(&u, script_name, script_content);
1156                         changes_made = 1;
1157                 }
1158                 else {
1159                         cprintf("%d Invalid script name.\n", ERROR + ILLEGAL_VALUE);
1160                 }
1161         }
1162
1163         else if (!strcasecmp(subcmd, "listscripts")) {
1164                 cprintf("%d Scripts:\n", LISTING_FOLLOWS);
1165                 for (s=u.first_script; s!=NULL; s=s->next) {
1166                         if (s->script_content != NULL) {
1167                                 cprintf("%s|%d|\n", s->script_name, s->script_active);
1168                         }
1169                 }
1170                 cprintf("000\n");
1171         }
1172
1173         else if (!strcasecmp(subcmd, "setactive")) {
1174                 extract_token(script_name, argbuf, 1, '|', sizeof script_name);
1175                 if (msiv_setactive(&u, script_name) == 0) {
1176                         cprintf("%d ok\n", CIT_OK);
1177                         changes_made = 1;
1178                 }
1179                 else {
1180                         cprintf("%d Script '%s' does not exist.\n",
1181                                 ERROR + ILLEGAL_VALUE,
1182                                 script_name
1183                         );
1184                 }
1185         }
1186
1187         else if (!strcasecmp(subcmd, "getscript")) {
1188                 extract_token(script_name, argbuf, 1, '|', sizeof script_name);
1189                 script_content = msiv_getscript(&u, script_name);
1190                 if (script_content != NULL) {
1191                         int script_len;
1192
1193                         cprintf("%d Script:\n", LISTING_FOLLOWS);
1194                         script_len = strlen(script_content);
1195                         client_write(script_content, script_len);
1196                         if (script_content[script_len-1] != '\n') {
1197                                 cprintf("\n");
1198                         }
1199                         cprintf("000\n");
1200                 }
1201                 else {
1202                         cprintf("%d Invalid script name.\n", ERROR + ILLEGAL_VALUE);
1203                 }
1204         }
1205
1206         else if (!strcasecmp(subcmd, "deletescript")) {
1207                 extract_token(script_name, argbuf, 1, '|', sizeof script_name);
1208                 i = msiv_deletescript(&u, script_name);
1209                 if (i == 0) {
1210                         cprintf("%d ok\n", CIT_OK);
1211                         changes_made = 1;
1212                 }
1213                 else if (i == 1) {
1214                         cprintf("%d Script '%s' does not exist.\n",
1215                                 ERROR + ILLEGAL_VALUE,
1216                                 script_name
1217                         );
1218                 }
1219                 else if (i == 2) {
1220                         cprintf("%d Script '%s' is active and cannot be deleted.\n",
1221                                 ERROR + ILLEGAL_VALUE,
1222                                 script_name
1223                         );
1224                 }
1225                 else {
1226                         cprintf("%d unknown error\n", ERROR);
1227                 }
1228         }
1229
1230         else {
1231                 cprintf("%d Invalid subcommand\n", ERROR + CMD_NOT_SUPPORTED);
1232         }
1233
1234         msiv_store(&u, changes_made);
1235 }
1236
1237
1238
1239 void ctdl_sieve_init(void) {
1240         char *cred = NULL;
1241         sieve2_context_t *sieve2_context = NULL;
1242         int res;
1243
1244         /*
1245          *      We don't really care about dumping the entire credits to the log
1246          *      every time the server is initialized.  The documentation will suffice
1247          *      for that purpose.  We are making a call to sieve2_credits() in order
1248          *      to demonstrate that we have successfully linked in to libsieve.
1249          */
1250         cred = strdup(sieve2_credits());
1251         if (cred == NULL) return;
1252
1253         if (strlen(cred) > 60) {
1254                 strcpy(&cred[55], "...");
1255         }
1256
1257         lprintf(CTDL_INFO, "%s\n",cred);
1258         free(cred);
1259
1260         /* Briefly initialize a Sieve parser instance just so we can list the
1261          * extensions that are available.
1262          */
1263         res = sieve2_alloc(&sieve2_context);
1264         if (res != SIEVE2_OK) {
1265                 lprintf(CTDL_CRIT, "sieve2_alloc() returned %d: %s\n", res, sieve2_errstr(res));
1266                 return;
1267         }
1268
1269         res = sieve2_callbacks(sieve2_context, ctdl_sieve_callbacks);
1270         if (res != SIEVE2_OK) {
1271                 lprintf(CTDL_CRIT, "sieve2_callbacks() returned %d: %s\n", res, sieve2_errstr(res));
1272                 goto BAIL;
1273         }
1274
1275         msiv_extensions = strdup(sieve2_listextensions(sieve2_context));
1276         lprintf(CTDL_INFO, "Extensions: %s\n", msiv_extensions);
1277
1278 BAIL:   res = sieve2_free(&sieve2_context);
1279         if (res != SIEVE2_OK) {
1280                 lprintf(CTDL_CRIT, "sieve2_free() returned %d: %s\n", res, sieve2_errstr(res));
1281         }
1282
1283 }
1284
1285 int serv_sieve_room(struct ctdlroom *room)
1286 {
1287         if (!strcasecmp(&room->QRname[11], MAILROOM)) {
1288                 sieve_queue_room(room);
1289         }
1290         return 0;
1291 }
1292
1293 #endif  /* HAVE_LIBSIEVE */
1294
1295 CTDL_MODULE_INIT(sieve)
1296 {
1297         if (!threading)
1298         {
1299 #ifdef HAVE_LIBSIEVE
1300
1301                 ctdl_sieve_init();
1302                 CtdlRegisterProtoHook(cmd_msiv, "MSIV", "Manage Sieve scripts");
1303
1304                 CtdlRegisterRoomHook(serv_sieve_room);
1305
1306                 CtdlRegisterSessionHook(perform_sieve_processing, EVT_HOUSE);
1307
1308 #else   /* HAVE_LIBSIEVE */
1309
1310                 lprintf(CTDL_INFO, "This server is missing libsieve.  Mailbox filtering will be disabled.\n");
1311
1312 #endif  /* HAVE_LIBSIEVE */
1313         }
1314
1315         /* return our Subversion id for the Log */
1316         return "$Id$";
1317 }
1318