src/filtering.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2006 Hiroyuki Yamamoto & The Sylpheed Claws Team
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  */
  19
  20 #include "defs.h"
  21 #include <glib.h>
  22 #include <glib/gi18n.h>
  23 #include <ctype.h>
  24 #include <string.h>
  25 #include <stdlib.h>
  26 #include <errno.h>
  27 #include <gtk/gtk.h>
  28 #include <stdio.h>
  29
  30 #include "utils.h"
  31 #include "procheader.h"
  32 #include "matcher.h"
  33 #include "filtering.h"
  34 #include "prefs_gtk.h"
  35 #include "compose.h"
  36 #include "prefs_common.h"
  37
  38 #define PREFSBUFSIZE            1024
  39
  40 GSList * pre_global_processing = NULL;
  41 GSList * post_global_processing = NULL;
  42 GSList * filtering_rules = NULL;
  43
  44 static gboolean filtering_is_final_action(FilteringAction *filtering_action);
  45
  46 #define STRLEN_WITH_CHECK(expr) \
  47         strlen_with_check(#expr, __LINE__, expr)
  48
  49 static inline gint strlen_with_check(const gchar *expr, gint fline, const gchar *str)
  50 {
  51         if (str)
  52                 return strlen(str);
  53         else {
  54                 debug_print("%s(%d) - invalid string %s\n", __FILE__, fline, expr);
  55                 return 0;
  56         }
  57 }
  58
  59 FilteringAction * filteringaction_new(int type, int account_id,
  60                                       gchar * destination,
  61                                       gint labelcolor, gint score)
  62 {
  63         FilteringAction * action;
  64
  65         action = g_new0(FilteringAction, 1);
  66
  67         action->type = type;
  68         action->account_id = account_id;
  69         if (destination) {
  70                 action->destination       = g_strdup(destination);
  71         } else {
  72                 action->destination       = NULL;
  73         }
  74         action->labelcolor = labelcolor;
  75         action->score = score;
  76         return action;
  77 }
  78
  79 void filteringaction_free(FilteringAction * action)
  80 {
  81         g_return_if_fail(action);
  82         g_free(action->destination);
  83         g_free(action);
  84 }
  85
  86 FilteringProp * filteringprop_new(gboolean enabled,
  87                                   const gchar *name,
  88                                   gint account_id,
  89                                   MatcherList * matchers,
  90                                   GSList * action_list)
  91 {
  92         FilteringProp * filtering;
  93
  94         filtering = g_new0(FilteringProp, 1);
  95         filtering->enabled = enabled;
  96         filtering->name = name ? g_strdup(name): NULL;
  97         filtering->account_id = account_id;
  98         filtering->matchers = matchers;
  99         filtering->action_list = action_list;
 100
 101         return filtering;
 102 }
 103
 104 static FilteringAction * filteringaction_copy(FilteringAction * src)
 105 {
 106         FilteringAction * new;
 107
 108         new = g_new0(FilteringAction, 1);
 109
 110         new->type = src->type;
 111         new->account_id = src->account_id;
 112         if (src->destination)
 113                 new->destination = g_strdup(src->destination);
 114         else
 115                 new->destination = NULL;
 116         new->labelcolor = src->labelcolor;
 117         new->score = src->score;
 118
 119         return new;
 120 }
 121
 122 FilteringProp * filteringprop_copy(FilteringProp *src)
 123 {
 124         FilteringProp * new;
 125         GSList *tmp;
 126
 127         new = g_new0(FilteringProp, 1);
 128         new->matchers = g_new0(MatcherList, 1);
 129
 130         for (tmp = src->matchers->matchers; tmp != NULL && tmp->data != NULL;) {
 131                 MatcherProp *matcher = (MatcherProp *)tmp->data;
 132
 133                 new->matchers->matchers = g_slist_append(new->matchers->matchers,
 134                                                    matcherprop_copy(matcher));
 135                 tmp = tmp->next;
 136         }
 137
 138         new->matchers->bool_and = src->matchers->bool_and;
 139
 140         new->action_list = NULL;
 141
 142         for (tmp = src->action_list ; tmp != NULL ; tmp = tmp->next) {
 143                 FilteringAction *filtering_action;
 144
 145                 filtering_action = tmp->data;
 146
 147                 new->action_list = g_slist_append(new->action_list,
 148                     filteringaction_copy(filtering_action));
 149         }
 150
 151         new->enabled = src->enabled;
 152         new->name = g_strdup(src->name);
 153
 154         return new;
 155 }
 156
 157 void filteringprop_free(FilteringProp * prop)
 158 {
 159         GSList * tmp;
 160
 161         g_return_if_fail(prop);
 162         matcherlist_free(prop->matchers);
 163
 164         for (tmp = prop->action_list ; tmp != NULL ; tmp = tmp->next) {
 165                 filteringaction_free(tmp->data);
 166         }
 167         g_free(prop->name);
 168         g_free(prop);
 169 }
 170
 171 void filtering_move_and_copy_msg(MsgInfo *msginfo)
 172 {
 173         GSList *list = g_slist_append(NULL, msginfo);
 174         filtering_move_and_copy_msgs(list);
 175         g_slist_free(list);
 176 }
 177
 178 /* move and copy messages by batches to be faster on IMAP */
 179 void filtering_move_and_copy_msgs(GSList *msgs)
 180 {
 181         GSList *messages = g_slist_copy(msgs);
 182         FolderItem *last_item = NULL;
 183         gboolean is_copy = FALSE, is_move = FALSE;
 184
 185         while (messages) {
 186                 GSList *batch = NULL, *cur;
 187                 gint found = 0;
 188                 for (cur = messages; cur; cur = cur->next) {
 189                         MsgInfo *info = (MsgInfo *)cur->data;
 190                         if (last_item == NULL) {
 191                                 last_item = info->to_filter_folder;
 192                         }
 193                         if (last_item == NULL)
 194                                 continue;
 195                         if (!is_copy && !is_move) {
 196                                 if (info->is_copy)
 197                                         is_copy = TRUE;
 198                                 else if (info->is_move)
 199                                         is_move = TRUE;
 200                         }
 201                         found++;
 202                         if (info->to_filter_folder == last_item
 203                         &&  info->is_copy == is_copy
 204                         &&  info->is_move == is_move) {
 205                                 batch = g_slist_prepend(batch, info);
 206                         }
 207                 }
 208                 if (found == 0) {
 209                         debug_print("no more messages to move/copy\n");
 210                         break;
 211                 }
 212                 for (cur = batch; cur; cur = cur->next) {
 213                         MsgInfo *info = (MsgInfo *)cur->data;
 214                         messages = g_slist_remove(messages, info);
 215                 }
 216                 batch = g_slist_reverse(batch);
 217                 if (g_slist_length(batch)) {
 218                         MsgInfo *info = (MsgInfo *)batch->data;
 219                         if (is_copy && last_item != info->folder) {
 220                                 folder_item_copy_msgs(last_item, batch);
 221                         } else if (is_move && last_item != info->folder) {
 222                                 if (folder_item_move_msgs(last_item, batch) < 0)
 223                                         folder_item_move_msgs(
 224                                                 folder_get_default_inbox(),
 225                                                 batch);
 226                         }
 227                         /* we don't reference the msginfos, because caller will do */
 228                         g_slist_free(batch);
 229                         batch = NULL;
 230                 }
 231                 last_item = NULL;
 232                 is_copy = FALSE;
 233                 is_move = FALSE;
 234         }
 235         /* we don't reference the msginfos, because caller will do */
 236         g_slist_free(messages);
 237 }
 238
 239 /*
 240   fitleringaction_apply
 241   runs the action on one MsgInfo
 242   return value : return TRUE if the action could be applied
 243 */
 244
 245 static gboolean filteringaction_apply(FilteringAction * action, MsgInfo * info)
 246 {
 247         FolderItem * dest_folder;
 248         gint val;
 249         Compose * compose;
 250         PrefsAccount * account;
 251         gchar * cmd;
 252
 253         switch(action->type) {
 254         case MATCHACTION_MOVE:
 255                 dest_folder =
 256                         folder_find_item_from_identifier(action->destination);
 257                 if (!dest_folder) {
 258                         debug_print("*** folder not found '%s'\n",
 259                                 action->destination ?action->destination :"");
 260                         return FALSE;
 261                 }
 262
 263                 /* check if mail is set to copy already,
 264                  * in which case we have to do it */
 265                 if (info->is_copy && info->to_filter_folder) {
 266                         debug_print("should cp and mv !\n");
 267                         folder_item_copy_msg(info->to_filter_folder, info);
 268                         info->is_copy = FALSE;
 269                 }
 270                 /* mark message to be moved */
 271                 info->is_move = TRUE;
 272                 info->to_filter_folder = dest_folder;
 273                 return TRUE;
 274
 275         case MATCHACTION_COPY:
 276                 dest_folder =
 277                         folder_find_item_from_identifier(action->destination);
 278
 279                 if (!dest_folder) {
 280                         debug_print("*** folder not found '%s'\n",
 281                                 action->destination ?action->destination :"");
 282                         return FALSE;
 283                 }
 284
 285                 /* check if mail is set to copy already,
 286                  * in which case we have to do it */
 287                 if (info->is_copy && info->to_filter_folder) {
 288                         debug_print("should cp and mv !\n");
 289                         folder_item_copy_msg(info->to_filter_folder, info);
 290                         info->is_copy = FALSE;
 291                 }
 292                 /* mark message to be copied */
 293                 info->is_copy = TRUE;
 294                 info->to_filter_folder = dest_folder;
 295                 return TRUE;
 296
 297         case MATCHACTION_DELETE:
 298                 if (folder_item_remove_msg(info->folder, info->msgnum) == -1)
 299                         return FALSE;
 300                 return TRUE;
 301
 302         case MATCHACTION_MARK:
 303                 procmsg_msginfo_set_flags(info, MSG_MARKED, 0);
 304                 return TRUE;
 305
 306         case MATCHACTION_UNMARK:
 307                 procmsg_msginfo_unset_flags(info, MSG_MARKED, 0);
 308                 return TRUE;
 309
 310         case MATCHACTION_LOCK:
 311                 procmsg_msginfo_set_flags(info, MSG_LOCKED, 0);
 312                 return TRUE;
 313
 314         case MATCHACTION_UNLOCK:
 315                 procmsg_msginfo_unset_flags(info, MSG_LOCKED, 0);
 316                 return TRUE;
 317
 318         case MATCHACTION_MARK_AS_READ:
 319                 procmsg_msginfo_unset_flags(info, MSG_UNREAD | MSG_NEW, 0);
 320                 return TRUE;
 321
 322         case MATCHACTION_MARK_AS_UNREAD:
 323                 procmsg_msginfo_set_flags(info, MSG_UNREAD | MSG_NEW, 0);
 324                 return TRUE;
 325
 326         case MATCHACTION_COLOR:
 327                 procmsg_msginfo_unset_flags(info, MSG_CLABEL_FLAG_MASK, 0);
 328                 procmsg_msginfo_set_flags(info, MSG_COLORLABEL_TO_FLAGS(action->labelcolor), 0);
 329                 return TRUE;
 330
 331         case MATCHACTION_FORWARD:
 332         case MATCHACTION_FORWARD_AS_ATTACHMENT:
 333                 account = account_find_from_id(action->account_id);
 334                 compose = compose_forward(account, info,
 335                         action->type == MATCHACTION_FORWARD ? FALSE : TRUE,
 336                         NULL, TRUE, TRUE);
 337                 compose_entry_append(compose, action->destination,
 338                                      compose->account->protocol == A_NNTP
 339                                             ? COMPOSE_NEWSGROUPS
 340                                             : COMPOSE_TO);
 341
 342                 val = compose_send(compose);
 343
 344                 return val == 0 ? TRUE : FALSE;
 345
 346         case MATCHACTION_REDIRECT:
 347                 account = account_find_from_id(action->account_id);
 348                 compose = compose_redirect(account, info, TRUE);
 349                 if (compose->account->protocol == A_NNTP)
 350                         break;
 351                 else
 352                         compose_entry_append(compose, action->destination,
 353                                              COMPOSE_TO);
 354
 355                 val = compose_send(compose);
 356
 357                 return val == 0 ? TRUE : FALSE;
 358
 359         case MATCHACTION_EXECUTE:
 360                 cmd = matching_build_command(action->destination, info);
 361                 if (cmd == NULL)
 362                         return FALSE;
 363                 else {
 364                         system(cmd);
 365                         g_free(cmd);
 366                 }
 367                 return TRUE;
 368
 369         case MATCHACTION_SET_SCORE:
 370                 info->score = action->score;
 371                 return TRUE;
 372
 373         case MATCHACTION_CHANGE_SCORE:
 374                 info->score += action->score;
 375                 return TRUE;
 376
 377         case MATCHACTION_STOP:
 378                 return FALSE;
 379
 380         case MATCHACTION_HIDE:
 381                 info->hidden = TRUE;
 382                 return TRUE;
 383
 384         case MATCHACTION_IGNORE:
 385                 procmsg_msginfo_set_flags(info, MSG_IGNORE_THREAD, 0);
 386                 return TRUE;
 387
 388         default:
 389                 break;
 390         }
 391         return FALSE;
 392 }
 393
 394 gboolean filteringaction_apply_action_list(GSList *action_list, MsgInfo *info)
 395 {
 396         GSList *p;
 397         g_return_val_if_fail(action_list, FALSE);
 398         g_return_val_if_fail(info, FALSE);
 399         for (p = action_list; p && p->data; p = g_slist_next(p)) {
 400                 FilteringAction *a = (FilteringAction *) p->data;
 401                 if (filteringaction_apply(a, info)) {
 402                         if (filtering_is_final_action(a))
 403                                 break;
 404                 } else
 405                         return FALSE;
 406
 407         }
 408         return TRUE;
 409 }
 410
 411 static gboolean filtering_match_condition(FilteringProp *filtering, MsgInfo *info,
 412                                                         PrefsAccount *ac_prefs)
 413 {
 414         gboolean matches = FALSE;
 415
 416         if (ac_prefs != NULL) {
 417                 matches = ((filtering->account_id == 0)
 418                                         || (filtering->account_id == ac_prefs->account_id));
 419         } else {
 420                 switch (prefs_common.apply_per_account_filtering_rules) {
 421                 case FILTERING_ACCOUNT_RULES_FORCE:
 422                         /* apply filtering rules regardless to the account info */
 423                         matches = TRUE;
 424                         break;
 425                 case FILTERING_ACCOUNT_RULES_SKIP:
 426                         /* don't apply filtering rules that belong to an account */
 427                         matches = (filtering->account_id == 0);
 428                         break;
 429                 case FILTERING_ACCOUNT_RULES_USE_CURRENT:
 430                         matches = ((filtering->account_id == 0)
 431                                         || (filtering->account_id == cur_account->account_id));
 432                         break;
 433                 }
 434         }
 435
 436         return matches && matcherlist_match(filtering->matchers, info);
 437 }
 438
 439 /*!
 440  *\brief        Apply a rule on message.
 441  *
 442  *\param        filtering List of filtering rules.
 443  *\param        info Message to apply rules on.
 444  *\param        final Variable returning TRUE or FALSE if one of the
 445  *              encountered actions was final.
 446  *              See also \ref filtering_is_final_action.
 447  *
 448  *\return       gboolean TRUE to continue applying rules.
 449  */
 450 static gboolean filtering_apply_rule(FilteringProp *filtering, MsgInfo *info,
 451     gboolean * final)
 452 {
 453         gboolean result = TRUE;
 454         gchar    buf[50];
 455         GSList * tmp;
 456
 457         * final = FALSE;
 458         for (tmp = filtering->action_list ; tmp != NULL ; tmp = tmp->next) {
 459                 FilteringAction * action;
 460
 461                 action = tmp->data;
 462
 463                 if (FALSE == (result = filteringaction_apply(action, info))) {
 464                         g_warning("No further processing after rule %s\n",
 465                             filteringaction_to_string(buf, sizeof buf, action));
 466                 }
 467
 468                 if (filtering_is_final_action(action)) {
 469                         * final = TRUE;
 470                         break;
 471                 }
 472         }
 473         return result;
 474 }
 475
 476 /*!
 477  *\brief        Check if an action is "final", i.e. should break further
 478  *              processing.
 479  *
 480  *\param        filtering_action Action to check.
 481  *
 482  *\return       gboolean TRUE if \a filtering_action is final.
 483  */
 484 static gboolean filtering_is_final_action(FilteringAction *filtering_action)
 485 {
 486         switch(filtering_action->type) {
 487         case MATCHACTION_MOVE:
 488         case MATCHACTION_DELETE:
 489         case MATCHACTION_STOP:
 490                 return TRUE; /* MsgInfo invalid for message */
 491         default:
 492                 return FALSE;
 493         }
 494 }
 495
 496 static gboolean filter_msginfo(GSList * filtering_list, MsgInfo * info, PrefsAccount* ac_prefs)
 497 {
 498         GSList  *l;
 499         gboolean final;
 500         gboolean apply_next;
 501
 502         g_return_val_if_fail(info != NULL, TRUE);
 503
 504         for (l = filtering_list, final = FALSE, apply_next = FALSE; l != NULL; l = g_slist_next(l)) {
 505                 FilteringProp * filtering = (FilteringProp *) l->data;
 506
 507                 if (filtering->enabled && filtering_match_condition(filtering, info, ac_prefs)) {
 508                         apply_next = filtering_apply_rule(filtering, info, &final);
 509                         if (final)
 510                                 break;
 511                 }
 512         }
 513
 514         /* put in inbox if a final rule could not be applied, or
 515          * the last rule was not a final one. */
 516         if ((final && !apply_next) || !final) {
 517                 return FALSE;
 518         }
 519
 520         return TRUE;
 521 }
 522
 523 /*!
 524  *\brief        Filter a message against a list of rules.
 525  *
 526  *\param        flist List of filter rules.
 527  *\param        info Message.
 528  *
 529  *\return       gboolean TRUE if filter rules handled the message.
 530  *
 531  *\note         Returning FALSE means the message was not handled,
 532  *              and that the calling code should do the default
 533  *              processing. E.g. \ref inc.c::inc_start moves the
 534  *              message to the inbox.
 535  */
 536 gboolean filter_message_by_msginfo(GSList *flist, MsgInfo *info, PrefsAccount* ac_prefs)
 537 {
 538         return filter_msginfo(flist, info, ac_prefs);
 539 }
 540
 541 gchar *filteringaction_to_string(gchar *dest, gint destlen, FilteringAction *action)
 542 {
 543         const gchar *command_str;
 544         gchar * quoted_dest;
 545
 546         command_str = get_matchparser_tab_str(action->type);
 547
 548         if (command_str == NULL)
 549                 return NULL;
 550
 551         switch(action->type) {
 552         case MATCHACTION_MOVE:
 553         case MATCHACTION_COPY:
 554         case MATCHACTION_EXECUTE:
 555                 quoted_dest = matcher_quote_str(action->destination);
 556                 g_snprintf(dest, destlen, "%s \"%s\"", command_str, quoted_dest);
 557                 g_free(quoted_dest);
 558                 return dest;
 559
 560         case MATCHACTION_DELETE:
 561         case MATCHACTION_MARK:
 562         case MATCHACTION_UNMARK:
 563         case MATCHACTION_LOCK:
 564         case MATCHACTION_UNLOCK:
 565         case MATCHACTION_MARK_AS_READ:
 566         case MATCHACTION_MARK_AS_UNREAD:
 567         case MATCHACTION_STOP:
 568         case MATCHACTION_HIDE:
 569         case MATCHACTION_IGNORE:
 570                 g_snprintf(dest, destlen, "%s", command_str);
 571                 return dest;
 572
 573         case MATCHACTION_REDIRECT:
 574         case MATCHACTION_FORWARD:
 575         case MATCHACTION_FORWARD_AS_ATTACHMENT:
 576                 quoted_dest = matcher_quote_str(action->destination);
 577                 g_snprintf(dest, destlen, "%s %d \"%s\"", command_str, action->account_id, quoted_dest);
 578                 g_free(quoted_dest);
 579                 return dest;
 580
 581         case MATCHACTION_COLOR:
 582                 g_snprintf(dest, destlen, "%s %d", command_str, action->labelcolor);
 583                 return dest;
 584
 585         case MATCHACTION_CHANGE_SCORE:
 586         case MATCHACTION_SET_SCORE:
 587                 g_snprintf(dest, destlen, "%s %d", command_str, action->score);
 588                 return dest;
 589
 590         default:
 591                 return NULL;
 592         }
 593 }
 594
 595 gchar * filteringaction_list_to_string(GSList * action_list)
 596 {
 597         gchar *action_list_str;
 598         gchar  buf[256];
 599         GSList * tmp;
 600         gchar *list_str;
 601
 602         action_list_str = NULL;
 603         for (tmp = action_list ; tmp != NULL ; tmp = tmp->next) {
 604                 gchar *action_str;
 605                 FilteringAction * action;
 606
 607                 action = tmp->data;
 608
 609                 action_str = filteringaction_to_string(buf,
 610                     sizeof buf, action);
 611
 612                 if (action_list_str != NULL) {
 613                         list_str = g_strconcat(action_list_str, " ", action_str, NULL);
 614                         g_free(action_list_str);
 615                 }
 616                 else {
 617                         list_str = g_strdup(action_str);
 618                 }
 619                 action_list_str = list_str;
 620         }
 621
 622         return action_list_str;
 623 }
 624
 625 gchar * filteringprop_to_string(FilteringProp * prop)
 626 {
 627         gchar *list_str;
 628         gchar *action_list_str;
 629         gchar *filtering_str;
 630
 631         action_list_str = filteringaction_list_to_string(prop->action_list);
 632
 633         if (action_list_str == NULL)
 634                 return NULL;
 635
 636         list_str = matcherlist_to_string(prop->matchers);
 637
 638         if (list_str == NULL) {
 639                 g_free(action_list_str);
 640                 return NULL;
 641         }
 642
 643         filtering_str = g_strconcat(list_str, " ", action_list_str, NULL);
 644         g_free(action_list_str);
 645         g_free(list_str);
 646
 647         return filtering_str;
 648 }
 649
 650 void prefs_filtering_free(GSList * prefs_filtering)
 651 {
 652         while (prefs_filtering != NULL) {
 653                 FilteringProp * filtering = (FilteringProp *)
 654                         prefs_filtering->data;
 655                 filteringprop_free(filtering);
 656                 prefs_filtering = g_slist_remove(prefs_filtering, filtering);
 657         }
 658 }
 659
 660 static gboolean prefs_filtering_free_func(GNode *node, gpointer data)
 661 {
 662         FolderItem *item = node->data;
 663
 664         g_return_val_if_fail(item, FALSE);
 665         g_return_val_if_fail(item->prefs, FALSE);
 666
 667         prefs_filtering_free(item->prefs->processing);
 668         item->prefs->processing = NULL;
 669
 670         return FALSE;
 671 }
 672
 673 void prefs_filtering_clear(void)
 674 {
 675         GList * cur;
 676
 677         for (cur = folder_get_list() ; cur != NULL ; cur = g_list_next(cur)) {
 678                 Folder *folder;
 679
 680                 folder = (Folder *) cur->data;
 681                 g_node_traverse(folder->node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 682                                 prefs_filtering_free_func, NULL);
 683         }
 684
 685         prefs_filtering_free(filtering_rules);
 686         filtering_rules = NULL;
 687         prefs_filtering_free(pre_global_processing);
 688         pre_global_processing = NULL;
 689         prefs_filtering_free(post_global_processing);
 690         post_global_processing = NULL;
 691 }
 692
 693 void prefs_filtering_clear_folder(Folder *folder)
 694 {
 695         g_return_if_fail(folder);
 696         g_return_if_fail(folder->node);
 697
 698         g_node_traverse(folder->node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 699                         prefs_filtering_free_func, NULL);
 700         /* FIXME: Note folder settings were changed, where the updates? */
 701 }
 702
 703 gboolean filtering_peek_per_account_rules(GSList *filtering_list)
 704 /* return TRUE if there's at least one per-account filtering rule */
 705 {
 706         GSList *l;
 707
 708         for (l = filtering_list; l != NULL; l = g_slist_next(l)) {
 709                 FilteringProp * filtering = (FilteringProp *) l->data;
 710
 711                 if (filtering->enabled && (filtering->account_id != 0)) {
 712                         return TRUE;
 713                 }
 714         }
 715
 716         return FALSE;
 717 }