src/procmsg.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2004 Hiroyuki Yamamoto
   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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #include "defs.h"
  21
  22 #include <glib.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <ctype.h>
  26
  27 #include "intl.h"
  28 #include "main.h"
  29 #include "utils.h"
  30 #include "procmsg.h"
  31 #include "procheader.h"
  32 #include "send_message.h"
  33 #include "procmime.h"
  34 #include "statusbar.h"
  35 #include "prefs_filtering.h"
  36 #include "filtering.h"
  37 #include "folder.h"
  38 #include "prefs_common.h"
  39 #include "account.h"
  40 #include "alertpanel.h"
  41 #include "news.h"
  42 #include "hooks.h"
  43 #include "msgcache.h"
  44 #include "partial_download.h"
  45
  46 GHashTable *procmsg_msg_hash_table_create(GSList *mlist)
  47 {
  48         GHashTable *msg_table;
  49
  50         if (mlist == NULL) return NULL;
  51
  52         msg_table = g_hash_table_new(NULL, g_direct_equal);
  53         procmsg_msg_hash_table_append(msg_table, mlist);
  54
  55         return msg_table;
  56 }
  57
  58 void procmsg_msg_hash_table_append(GHashTable *msg_table, GSList *mlist)
  59 {
  60         GSList *cur;
  61         MsgInfo *msginfo;
  62
  63         if (msg_table == NULL || mlist == NULL) return;
  64
  65         for (cur = mlist; cur != NULL; cur = cur->next) {
  66                 msginfo = (MsgInfo *)cur->data;
  67
  68                 g_hash_table_insert(msg_table,
  69                                     GUINT_TO_POINTER(msginfo->msgnum),
  70                                     msginfo);
  71         }
  72 }
  73
  74 GHashTable *procmsg_to_folder_hash_table_create(GSList *mlist)
  75 {
  76         GHashTable *msg_table;
  77         GSList *cur;
  78         MsgInfo *msginfo;
  79
  80         if (mlist == NULL) return NULL;
  81
  82         msg_table = g_hash_table_new(NULL, g_direct_equal);
  83
  84         for (cur = mlist; cur != NULL; cur = cur->next) {
  85                 msginfo = (MsgInfo *)cur->data;
  86                 g_hash_table_insert(msg_table, msginfo->to_folder, msginfo);
  87         }
  88
  89         return msg_table;
  90 }
  91
  92 gint procmsg_get_last_num_in_msg_list(GSList *mlist)
  93 {
  94         GSList *cur;
  95         MsgInfo *msginfo;
  96         gint last = 0;
  97
  98         for (cur = mlist; cur != NULL; cur = cur->next) {
  99                 msginfo = (MsgInfo *)cur->data;
 100                 if (msginfo && msginfo->msgnum > last)
 101                         last = msginfo->msgnum;
 102         }
 103
 104         return last;
 105 }
 106
 107 void procmsg_msg_list_free(GSList *mlist)
 108 {
 109         GSList *cur;
 110         MsgInfo *msginfo;
 111
 112         for (cur = mlist; cur != NULL; cur = cur->next) {
 113                 msginfo = (MsgInfo *)cur->data;
 114                 procmsg_msginfo_free(msginfo);
 115         }
 116         g_slist_free(mlist);
 117 }
 118
 119 struct MarkSum {
 120         gint *new_msgs;
 121         gint *unread_msgs;
 122         gint *total_msgs;
 123         gint *min;
 124         gint *max;
 125         gint first;
 126 };
 127
 128 /* CLAWS subject threading:
 129
 130   in the first round it inserts subject lines in a
 131   relation (subject <-> node)
 132
 133   the second round finishes the threads by attaching
 134   matching subject lines to the one found in the
 135   relation. will use the oldest node with the same
 136   subject that is not more then thread_by_subject_max_age
 137   days old (see subject_relation_lookup)
 138 */
 139
 140 static void subject_relation_insert(GRelation *relation, GNode *node)
 141 {
 142         gchar *subject;
 143         MsgInfo *msginfo;
 144
 145         g_return_if_fail(relation != NULL);
 146         g_return_if_fail(node != NULL);
 147         msginfo = (MsgInfo *) node->data;
 148         g_return_if_fail(msginfo != NULL);
 149
 150         subject = msginfo->subject;
 151         if (subject == NULL)
 152                 return;
 153         subject += subject_get_prefix_length(subject);
 154
 155         g_relation_insert(relation, subject, node);
 156 }
 157
 158 static GNode *subject_relation_lookup(GRelation *relation, MsgInfo *msginfo)
 159 {
 160         gchar *subject;
 161         GTuples *tuples;
 162         GNode *node = NULL;
 163         gint prefix_length;
 164
 165         g_return_val_if_fail(relation != NULL, NULL);
 166
 167         subject = msginfo->subject;
 168         if (subject == NULL)
 169                 return NULL;
 170         prefix_length = subject_get_prefix_length(subject);
 171         if (prefix_length <= 0)
 172                 return NULL;
 173         subject += prefix_length;
 174
 175         tuples = g_relation_select(relation, subject, 0);
 176         if (tuples == NULL)
 177                 return NULL;
 178
 179         if (tuples->len > 0) {
 180                 int i;
 181                 GNode *relation_node;
 182                 MsgInfo *relation_msginfo = NULL, *best_msginfo = NULL;
 183                 gboolean match;
 184
 185                 /* check all nodes with the same subject to find the best parent */
 186                 for (i = 0; i < tuples->len; i++) {
 187                         relation_node = (GNode *) g_tuples_index(tuples, i, 1);
 188                         relation_msginfo = (MsgInfo *) relation_node->data;
 189                         match = FALSE;
 190
 191                         /* best node should be the oldest in the found nodes */
 192                         /* parent node must not be older then msginfo */
 193                         if ((relation_msginfo->date_t < msginfo->date_t) &&
 194                             ((best_msginfo == NULL) ||
 195                              (best_msginfo->date_t > relation_msginfo->date_t)))
 196                                 match = TRUE;
 197
 198                         /* parent node must not be more then thread_by_subject_max_age
 199                            days older then msginfo */
 200                         if (abs(difftime(msginfo->date_t, relation_msginfo->date_t)) >
 201                             prefs_common.thread_by_subject_max_age * 3600 * 24)
 202                                 match = FALSE;
 203
 204                         /* can add new tests for all matching
 205                            nodes found by subject */
 206
 207                         if (match) {
 208                                 node = relation_node;
 209                                 best_msginfo = relation_msginfo;
 210                         }
 211                 }
 212         }
 213
 214         g_tuples_destroy(tuples);
 215         return node;
 216 }
 217
 218 /* return the reversed thread tree */
 219 GNode *procmsg_get_thread_tree(GSList *mlist)
 220 {
 221         GNode *root, *parent, *node, *next;
 222         GHashTable *msgid_table;
 223         GRelation *subject_relation;
 224         MsgInfo *msginfo;
 225         const gchar *msgid;
 226
 227         root = g_node_new(NULL);
 228         msgid_table = g_hash_table_new(g_str_hash, g_str_equal);
 229         subject_relation = g_relation_new(2);
 230         g_relation_index(subject_relation, 0, g_str_hash, g_str_equal);
 231
 232         for (; mlist != NULL; mlist = mlist->next) {
 233                 msginfo = (MsgInfo *)mlist->data;
 234                 parent = root;
 235
 236                 if (msginfo->inreplyto) {
 237                         parent = g_hash_table_lookup(msgid_table, msginfo->inreplyto);
 238                         if (parent == NULL) {
 239                                 parent = root;
 240                         }
 241                 }
 242                 node = g_node_insert_data_before
 243                         (parent, parent == root ? parent->children : NULL,
 244                          msginfo);
 245                 if ((msgid = msginfo->msgid) && g_hash_table_lookup(msgid_table, msgid) == NULL)
 246                         g_hash_table_insert(msgid_table, (gchar *)msgid, node);
 247
 248                 /* CLAWS: add subject to relation (without prefix) */
 249                 if (prefs_common.thread_by_subject) {
 250                         subject_relation_insert(subject_relation, node);
 251                 }
 252         }
 253
 254         /* complete the unfinished threads */
 255         for (node = root->children; node != NULL; ) {
 256                 parent = NULL;
 257                 next = node->next;
 258                 msginfo = (MsgInfo *)node->data;
 259                 if (msginfo->inreplyto) {
 260                         parent = g_hash_table_lookup(msgid_table, msginfo->inreplyto);
 261                         /* node should not be the parent, and node should not
 262                            be an ancestor of parent (circular reference) */
 263                         if (parent && parent != node &&
 264                             !g_node_is_ancestor(node, parent)) {
 265                                 g_node_unlink(node);
 266                                 g_node_insert_before
 267                                         (parent, parent->children, node);
 268                         }
 269                 }
 270                 node = next;
 271         }
 272
 273         if (prefs_common.thread_by_subject) {
 274                 for (node = root->children; node && node != NULL;) {
 275                         next = node->next;
 276                         msginfo = (MsgInfo *) node->data;
 277
 278                         parent = subject_relation_lookup(subject_relation, msginfo);
 279
 280                         /* the node may already be threaded by IN-REPLY-TO, so go up
 281                          * in the tree to
 282                            find the parent node */
 283                         if (parent != NULL) {
 284                                 if (g_node_is_ancestor(node, parent))
 285                                         parent = NULL;
 286                                 if (parent == node)
 287                                         parent = NULL;
 288                         }
 289
 290                         if (parent) {
 291                                 g_node_unlink(node);
 292                                 g_node_append(parent, node);
 293                         }
 294
 295                         node = next;
 296                 }
 297         }
 298
 299         g_relation_destroy(subject_relation);
 300         g_hash_table_destroy(msgid_table);
 301
 302         return root;
 303 }
 304
 305 void procmsg_move_messages(GSList *mlist)
 306 {
 307         GSList *cur, *movelist = NULL;
 308         MsgInfo *msginfo;
 309         FolderItem *dest = NULL;
 310
 311         if (!mlist) return;
 312
 313         folder_item_update_freeze();
 314
 315         for (cur = mlist; cur != NULL; cur = cur->next) {
 316                 msginfo = (MsgInfo *)cur->data;
 317                 if (!dest) {
 318                         dest = msginfo->to_folder;
 319                         movelist = g_slist_append(movelist, msginfo);
 320                 } else if (dest == msginfo->to_folder) {
 321                         movelist = g_slist_append(movelist, msginfo);
 322                 } else {
 323                         folder_item_move_msgs(dest, movelist);
 324                         g_slist_free(movelist);
 325                         movelist = NULL;
 326                         dest = msginfo->to_folder;
 327                         movelist = g_slist_append(movelist, msginfo);
 328                 }
 329                 procmsg_msginfo_set_to_folder(msginfo, NULL);
 330         }
 331
 332         if (movelist) {
 333                 folder_item_move_msgs(dest, movelist);
 334                 g_slist_free(movelist);
 335         }
 336
 337         folder_item_update_thaw();
 338 }
 339
 340 void procmsg_copy_messages(GSList *mlist)
 341 {
 342         GSList *cur, *copylist = NULL;
 343         MsgInfo *msginfo;
 344         FolderItem *dest = NULL;
 345
 346         if (!mlist) return;
 347
 348         folder_item_update_freeze();
 349
 350         for (cur = mlist; cur != NULL; cur = cur->next) {
 351                 msginfo = (MsgInfo *)cur->data;
 352                 if (!dest) {
 353                         dest = msginfo->to_folder;
 354                         copylist = g_slist_append(copylist, msginfo);
 355                 } else if (dest == msginfo->to_folder) {
 356                         copylist = g_slist_append(copylist, msginfo);
 357                 } else {
 358                         folder_item_copy_msgs(dest, copylist);
 359                         g_slist_free(copylist);
 360                         copylist = NULL;
 361                         dest = msginfo->to_folder;
 362                         copylist = g_slist_append(copylist, msginfo);
 363                 }
 364                 procmsg_msginfo_set_to_folder(msginfo, NULL);
 365         }
 366
 367         if (copylist) {
 368                 folder_item_copy_msgs(dest, copylist);
 369                 g_slist_free(copylist);
 370         }
 371
 372         folder_item_update_thaw();
 373 }
 374
 375 gchar *procmsg_get_message_file_path(MsgInfo *msginfo)
 376 {
 377         gchar *file;
 378
 379         g_return_val_if_fail(msginfo != NULL, NULL);
 380
 381         if (msginfo->plaintext_file)
 382                 file = g_strdup(msginfo->plaintext_file);
 383         else {
 384                 file = folder_item_fetch_msg(msginfo->folder, msginfo->msgnum);
 385         }
 386
 387         return file;
 388 }
 389
 390 gchar *procmsg_get_message_file(MsgInfo *msginfo)
 391 {
 392         gchar *filename = NULL;
 393
 394         g_return_val_if_fail(msginfo != NULL, NULL);
 395
 396         filename = folder_item_fetch_msg(msginfo->folder, msginfo->msgnum);
 397         if (!filename)
 398                 debug_print("can't fetch message %d\n", msginfo->msgnum);
 399
 400         return filename;
 401 }
 402
 403 GSList *procmsg_get_message_file_list(GSList *mlist)
 404 {
 405         GSList *file_list = NULL;
 406         MsgInfo *msginfo;
 407         MsgFileInfo *fileinfo;
 408         gchar *file;
 409
 410         while (mlist != NULL) {
 411                 msginfo = (MsgInfo *)mlist->data;
 412                 file = procmsg_get_message_file(msginfo);
 413                 if (!file) {
 414                         procmsg_message_file_list_free(file_list);
 415                         return NULL;
 416                 }
 417                 fileinfo = g_new(MsgFileInfo, 1);
 418                 fileinfo->msginfo = procmsg_msginfo_new_ref(msginfo);
 419                 fileinfo->file = file;
 420                 fileinfo->flags = g_new(MsgFlags, 1);
 421                 *fileinfo->flags = msginfo->flags;
 422                 file_list = g_slist_prepend(file_list, fileinfo);
 423                 mlist = mlist->next;
 424         }
 425
 426         file_list = g_slist_reverse(file_list);
 427
 428         return file_list;
 429 }
 430
 431 void procmsg_message_file_list_free(MsgInfoList *file_list)
 432 {
 433         GSList *cur;
 434         MsgFileInfo *fileinfo;
 435
 436         for (cur = file_list; cur != NULL; cur = cur->next) {
 437                 fileinfo = (MsgFileInfo *)cur->data;
 438                 procmsg_msginfo_free(fileinfo->msginfo);
 439                 g_free(fileinfo->file);
 440                 g_free(fileinfo->flags);
 441                 g_free(fileinfo);
 442         }
 443
 444         g_slist_free(file_list);
 445 }
 446
 447 FILE *procmsg_open_message(MsgInfo *msginfo)
 448 {
 449         FILE *fp;
 450         gchar *file;
 451
 452         g_return_val_if_fail(msginfo != NULL, NULL);
 453
 454         file = procmsg_get_message_file_path(msginfo);
 455         g_return_val_if_fail(file != NULL, NULL);
 456
 457         if (!is_file_exist(file)) {
 458                 g_free(file);
 459                 file = procmsg_get_message_file(msginfo);
 460                 if (!file)
 461                         return NULL;
 462         }
 463
 464         if ((fp = fopen(file, "rb")) == NULL) {
 465                 FILE_OP_ERROR(file, "fopen");
 466                 g_free(file);
 467                 return NULL;
 468         }
 469
 470         g_free(file);
 471
 472         if (MSG_IS_QUEUED(msginfo->flags) || MSG_IS_DRAFT(msginfo->flags)) {
 473                 gchar buf[BUFFSIZE];
 474
 475                 while (fgets(buf, sizeof(buf), fp) != NULL)
 476                         if (buf[0] == '\r' || buf[0] == '\n') break;
 477         }
 478
 479         return fp;
 480 }
 481
 482 gboolean procmsg_msg_exist(MsgInfo *msginfo)
 483 {
 484         gchar *path;
 485         gboolean ret;
 486
 487         if (!msginfo) return FALSE;
 488
 489         path = folder_item_get_path(msginfo->folder);
 490         change_dir(path);
 491         ret = !folder_item_is_msg_changed(msginfo->folder, msginfo);
 492         g_free(path);
 493
 494         return ret;
 495 }
 496
 497 void procmsg_get_filter_keyword(MsgInfo *msginfo, gchar **header, gchar **key,
 498                                 PrefsFilterType type)
 499 {
 500         static HeaderEntry hentry[] = {{"X-BeenThere:",    NULL, TRUE},
 501                                        {"X-ML-Name:",      NULL, TRUE},
 502                                        {"X-List:",         NULL, TRUE},
 503                                        {"X-Mailing-list:", NULL, TRUE},
 504                                        {"List-Id:",        NULL, TRUE},
 505                                        {"X-Sequence:",     NULL, TRUE},
 506                                        {NULL,              NULL, FALSE}};
 507         enum
 508         {
 509                 H_X_BEENTHERE    = 0,
 510                 H_X_ML_NAME      = 1,
 511                 H_X_LIST         = 2,
 512                 H_X_MAILING_LIST = 3,
 513                 H_LIST_ID        = 4,
 514                 H_X_SEQUENCE     = 5
 515         };
 516
 517         FILE *fp;
 518
 519         g_return_if_fail(msginfo != NULL);
 520         g_return_if_fail(header != NULL);
 521         g_return_if_fail(key != NULL);
 522
 523         *header = NULL;
 524         *key = NULL;
 525
 526         switch (type) {
 527         case FILTER_BY_NONE:
 528                 return;
 529         case FILTER_BY_AUTO:
 530                 if ((fp = procmsg_open_message(msginfo)) == NULL)
 531                         return;
 532                 procheader_get_header_fields(fp, hentry);
 533                 fclose(fp);
 534
 535 #define SET_FILTER_KEY(hstr, idx)       \
 536 {                                       \
 537         *header = g_strdup(hstr);       \
 538         *key = hentry[idx].body;        \
 539         hentry[idx].body = NULL;        \
 540 }
 541
 542                 if (hentry[H_X_BEENTHERE].body != NULL) {
 543                         SET_FILTER_KEY("header \"X-BeenThere\"", H_X_BEENTHERE);
 544                 } else if (hentry[H_X_ML_NAME].body != NULL) {
 545                         SET_FILTER_KEY("header \"X-ML-Name\"", H_X_ML_NAME);
 546                 } else if (hentry[H_X_LIST].body != NULL) {
 547                         SET_FILTER_KEY("header \"X-List\"", H_X_LIST);
 548                 } else if (hentry[H_X_MAILING_LIST].body != NULL) {
 549                         SET_FILTER_KEY("header \"X-Mailing-List\"", H_X_MAILING_LIST);
 550                 } else if (hentry[H_LIST_ID].body != NULL) {
 551                         SET_FILTER_KEY("header \"List-Id\"", H_LIST_ID);
 552                         extract_list_id_str(*key);
 553                 } else if (hentry[H_X_SEQUENCE].body != NULL) {
 554                         guchar *p;
 555
 556                         SET_FILTER_KEY("X-Sequence", H_X_SEQUENCE);
 557                         p = *key;
 558                         while (*p != '\0') {
 559                                 while (*p != '\0' && !isspace(*p)) p++;
 560                                 while (isspace(*p)) p++;
 561                                 if (isdigit(*p)) {
 562                                         *p = '\0';
 563                                         break;
 564                                 }
 565                         }
 566                         g_strstrip(*key);
 567                 } else if (msginfo->subject) {
 568                         *header = g_strdup("subject");
 569                         *key = g_strdup(msginfo->subject);
 570                 }
 571
 572 #undef SET_FILTER_KEY
 573
 574                 g_free(hentry[H_X_BEENTHERE].body);
 575                 hentry[H_X_BEENTHERE].body = NULL;
 576                 g_free(hentry[H_X_ML_NAME].body);
 577                 hentry[H_X_ML_NAME].body = NULL;
 578                 g_free(hentry[H_X_LIST].body);
 579                 hentry[H_X_LIST].body = NULL;
 580                 g_free(hentry[H_X_MAILING_LIST].body);
 581                 hentry[H_X_MAILING_LIST].body = NULL;
 582                 g_free(hentry[H_LIST_ID].body);
 583                 hentry[H_LIST_ID].body = NULL;
 584
 585                 break;
 586         case FILTER_BY_FROM:
 587                 *header = g_strdup("from");
 588                 *key = g_strdup(msginfo->from);
 589                 break;
 590         case FILTER_BY_TO:
 591                 *header = g_strdup("to");
 592                 *key = g_strdup(msginfo->to);
 593                 break;
 594         case FILTER_BY_SUBJECT:
 595                 *header = g_strdup("subject");
 596                 *key = g_strdup(msginfo->subject);
 597                 break;
 598         default:
 599                 break;
 600         }
 601 }
 602
 603 void procmsg_empty_trash(FolderItem *trash)
 604 {
 605         FILE *fp;
 606
 607         if (trash && trash->total_msgs > 0) {
 608                 GSList *mlist = folder_item_get_msg_list(trash);
 609                 GSList *cur;
 610                 for (cur = mlist ; cur != NULL ; cur = cur->next) {
 611                         MsgInfo * msginfo = (MsgInfo *) cur->data;
 612                         partial_mark_for_delete(msginfo);
 613                         procmsg_msginfo_free(msginfo);
 614                 }
 615
 616                 folder_item_remove_all_msg(trash);
 617         }
 618 }
 619
 620 void procmsg_empty_all_trash(void)
 621 {
 622         FolderItem *trash;
 623         GList *cur;
 624
 625         for (cur = folder_get_list(); cur != NULL; cur = cur->next) {
 626                 trash = FOLDER(cur->data)->trash;
 627                 procmsg_empty_trash(trash);
 628         }
 629 }
 630
 631 /*!
 632  *\brief        Send messages in queue
 633  *
 634  *\param        queue Queue folder to process
 635  *\param        save_msgs Unused
 636  *
 637  *\return       Number of messages sent, negative if an error occurred
 638  *              positive if no error occurred
 639  */
 640 gint procmsg_send_queue(FolderItem *queue, gboolean save_msgs)
 641 {
 642         gint ret = 1, count = 0;
 643         GSList *list, *elem;
 644
 645         if (!queue)
 646                 queue = folder_get_default_queue();
 647         g_return_val_if_fail(queue != NULL, -1);
 648
 649         folder_item_scan(queue);
 650         list = folder_item_get_msg_list(queue);
 651
 652         for (elem = list; elem != NULL; elem = elem->next) {
 653                 gchar *file;
 654                 MsgInfo *msginfo;
 655
 656                 msginfo = (MsgInfo *)(elem->data);
 657                 if (!MSG_IS_LOCKED(msginfo->flags)) {
 658                         file = folder_item_fetch_msg(queue, msginfo->msgnum);
 659                         if (file) {
 660                                 if (procmsg_send_message_queue(file) < 0) {
 661                                         g_warning("Sending queued message %d failed.\n",
 662                                                   msginfo->msgnum);
 663                                         ret = -1;
 664                                 } else {
 665                                         /* CLAWS:
 666                                          * We save in procmsg_send_message_queue because
 667                                          * we need the destination folder from the queue
 668                                          * header
 669
 670                                         if (save_msgs)
 671                                                 procmsg_save_to_outbox
 672                                                         (queue->folder->outbox,
 673                                                          file, TRUE);
 674                                          */
 675                                         count++;
 676                                         folder_item_remove_msg(queue, msginfo->msgnum);
 677                                 }
 678                                 g_free(file);
 679                         }
 680                 }
 681                 /* FIXME: supposedly if only one message is locked, and queue
 682                  * is being flushed, the following free says something like
 683                  * "freeing msg ## in folder (nil)". */
 684                 procmsg_msginfo_free(msginfo);
 685         }
 686
 687         return ret * count;
 688 }
 689
 690 gint procmsg_remove_special_headers(const gchar *in, const gchar *out)
 691 {
 692         FILE *fp, *outfp;
 693         gchar buf[BUFFSIZE];
 694
 695         if ((fp = fopen(in, "rb")) == NULL) {
 696                 FILE_OP_ERROR(in, "fopen");
 697                 return -1;
 698         }
 699         if ((outfp = fopen(out, "wb")) == NULL) {
 700                 FILE_OP_ERROR(out, "fopen");
 701                 fclose(fp);
 702                 return -1;
 703         }
 704         while (fgets(buf, sizeof(buf), fp) != NULL)
 705                 if (buf[0] == '\r' || buf[0] == '\n') break;
 706         while (fgets(buf, sizeof(buf), fp) != NULL)
 707                 fputs(buf, outfp);
 708         fclose(outfp);
 709         fclose(fp);
 710         return 0;
 711
 712 }
 713 gint procmsg_save_to_outbox(FolderItem *outbox, const gchar *file,
 714                             gboolean is_queued)
 715 {
 716         gint num;
 717         MsgInfo *msginfo, *tmp_msginfo;
 718         MsgFlags flag = {0, 0};
 719
 720         debug_print("saving sent message...\n");
 721
 722         if (!outbox)
 723                 outbox = folder_get_default_outbox();
 724         g_return_val_if_fail(outbox != NULL, -1);
 725
 726         /* remove queueing headers */
 727         if (is_queued) {
 728                 gchar tmp[MAXPATHLEN + 1];
 729
 730                 g_snprintf(tmp, sizeof(tmp), "%s%ctmpmsg.out.%08x",
 731                            get_rc_dir(), G_DIR_SEPARATOR, (guint) rand());
 732
 733                 if (procmsg_remove_special_headers(file, tmp) !=0)
 734                         return -1;
 735
 736                 folder_item_scan(outbox);
 737                 if ((num = folder_item_add_msg(outbox, tmp, &flag, TRUE)) < 0) {
 738                         g_warning("can't save message\n");
 739                         unlink(tmp);
 740                         return -1;
 741                 }
 742         } else {
 743                 folder_item_scan(outbox);
 744                 if ((num = folder_item_add_msg
 745                         (outbox, file, &flag, FALSE)) < 0) {
 746                         g_warning("can't save message\n");
 747                         return -1;
 748                 }
 749                 return -1;
 750         }
 751         msginfo = folder_item_get_msginfo(outbox, num);         /* refcnt++ */
 752         tmp_msginfo = procmsg_msginfo_get_full_info(msginfo);   /* refcnt++ */
 753         if (msginfo != NULL) {
 754                 procmsg_msginfo_unset_flags(msginfo, ~0, 0);
 755                 procmsg_msginfo_free(msginfo);                  /* refcnt-- */
 756                 /* tmp_msginfo == msginfo */
 757                 if (tmp_msginfo && (msginfo->dispositionnotificationto ||
 758                     msginfo->returnreceiptto)) {
 759                         procmsg_msginfo_set_flags(msginfo, MSG_RETRCPT_SENT, 0);
 760                         procmsg_msginfo_free(msginfo);          /* refcnt-- */
 761                 }
 762         }
 763
 764         return 0;
 765 }
 766
 767 void procmsg_print_message(MsgInfo *msginfo, const gchar *cmdline)
 768 {
 769         static const gchar *def_cmd = "lpr %s";
 770         static guint id = 0;
 771         gchar *prtmp;
 772         FILE *tmpfp, *prfp;
 773         gchar buf[1024];
 774         gchar *p;
 775
 776         g_return_if_fail(msginfo);
 777
 778         if ((tmpfp = procmime_get_first_text_content(msginfo)) == NULL) {
 779                 g_warning("Can't get text part\n");
 780                 return;
 781         }
 782
 783         prtmp = g_strdup_printf("%s%cprinttmp.%08x",
 784                                 get_mime_tmp_dir(), G_DIR_SEPARATOR, id++);
 785
 786         if ((prfp = fopen(prtmp, "wb")) == NULL) {
 787                 FILE_OP_ERROR(prtmp, "fopen");
 788                 g_free(prtmp);
 789                 fclose(tmpfp);
 790                 return;
 791         }
 792
 793         if (msginfo->date) fprintf(prfp, "Date: %s\n", msginfo->date);
 794         if (msginfo->from) fprintf(prfp, "From: %s\n", msginfo->from);
 795         if (msginfo->to)   fprintf(prfp, "To: %s\n", msginfo->to);
 796         if (msginfo->cc)   fprintf(prfp, "Cc: %s\n", msginfo->cc);
 797         if (msginfo->newsgroups)
 798                 fprintf(prfp, "Newsgroups: %s\n", msginfo->newsgroups);
 799         if (msginfo->subject) fprintf(prfp, "Subject: %s\n", msginfo->subject);
 800         fputc('\n', prfp);
 801
 802         while (fgets(buf, sizeof(buf), tmpfp) != NULL)
 803                 fputs(buf, prfp);
 804
 805         fclose(prfp);
 806         fclose(tmpfp);
 807
 808         if (cmdline && (p = strchr(cmdline, '%')) && *(p + 1) == 's' &&
 809             !strchr(p + 2, '%'))
 810                 g_snprintf(buf, sizeof(buf) - 1, cmdline, prtmp);
 811         else {
 812                 if (cmdline)
 813                         g_warning("Print command line is invalid: `%s'\n",
 814                                   cmdline);
 815                 g_snprintf(buf, sizeof(buf) - 1, def_cmd, prtmp);
 816         }
 817
 818         g_free(prtmp);
 819
 820         g_strchomp(buf);
 821         if (buf[strlen(buf) - 1] != '&') strcat(buf, "&");
 822         system(buf);
 823 }
 824
 825 MsgInfo *procmsg_msginfo_new_ref(MsgInfo *msginfo)
 826 {
 827         msginfo->refcnt++;
 828
 829         return msginfo;
 830 }
 831
 832 MsgInfo *procmsg_msginfo_new(void)
 833 {
 834         MsgInfo *newmsginfo;
 835
 836         newmsginfo = g_new0(MsgInfo, 1);
 837         newmsginfo->refcnt = 1;
 838
 839         return newmsginfo;
 840 }
 841
 842 MsgInfo *procmsg_msginfo_copy(MsgInfo *msginfo)
 843 {
 844         MsgInfo *newmsginfo;
 845
 846         if (msginfo == NULL) return NULL;
 847
 848         newmsginfo = g_new0(MsgInfo, 1);
 849
 850         newmsginfo->refcnt = 1;
 851
 852 #define MEMBCOPY(mmb)   newmsginfo->mmb = msginfo->mmb
 853 #define MEMBDUP(mmb)    newmsginfo->mmb = msginfo->mmb ? \
 854                         g_strdup(msginfo->mmb) : NULL
 855
 856         MEMBCOPY(msgnum);
 857         MEMBCOPY(size);
 858         MEMBCOPY(mtime);
 859         MEMBCOPY(date_t);
 860
 861         MEMBCOPY(flags);
 862
 863         MEMBDUP(fromname);
 864
 865         MEMBDUP(date);
 866         MEMBDUP(from);
 867         MEMBDUP(to);
 868         MEMBDUP(cc);
 869         MEMBDUP(newsgroups);
 870         MEMBDUP(subject);
 871         MEMBDUP(msgid);
 872         MEMBDUP(inreplyto);
 873         MEMBDUP(xref);
 874
 875         MEMBCOPY(folder);
 876         MEMBCOPY(to_folder);
 877
 878         MEMBDUP(xface);
 879         MEMBDUP(dispositionnotificationto);
 880         MEMBDUP(returnreceiptto);
 881         MEMBDUP(references);
 882
 883         MEMBCOPY(score);
 884         MEMBCOPY(threadscore);
 885         MEMBDUP(plaintext_file);
 886
 887         return newmsginfo;
 888 }
 889
 890 MsgInfo *procmsg_msginfo_get_full_info(MsgInfo *msginfo)
 891 {
 892         MsgInfo *full_msginfo;
 893         gchar *file;
 894
 895         if (msginfo == NULL) return NULL;
 896
 897         file = procmsg_get_message_file(msginfo);
 898         if (!file) {
 899                 g_warning("procmsg_msginfo_get_full_info(): can't get message file.\n");
 900                 return NULL;
 901         }
 902
 903         full_msginfo = procheader_parse_file(file, msginfo->flags, TRUE, FALSE);
 904         g_free(file);
 905         if (!full_msginfo) return NULL;
 906
 907         /* CLAWS: make sure we add the missing members; see:
 908          * procheader.c::procheader_get_headernames() */
 909         if (!msginfo->xface)
 910                 msginfo->xface = g_strdup(full_msginfo->xface);
 911         if (!msginfo->dispositionnotificationto)
 912                 msginfo->dispositionnotificationto =
 913                         g_strdup(full_msginfo->dispositionnotificationto);
 914         if (!msginfo->returnreceiptto)
 915                 msginfo->returnreceiptto = g_strdup
 916                         (full_msginfo->returnreceiptto);
 917         if (!msginfo->partial_recv && full_msginfo->partial_recv)
 918                 msginfo->partial_recv = g_strdup
 919                         (full_msginfo->partial_recv);
 920         msginfo->total_size = full_msginfo->total_size;
 921         if (!msginfo->account_server && full_msginfo->account_server)
 922                 msginfo->account_server = g_strdup
 923                         (full_msginfo->account_server);
 924         if (!msginfo->account_login && full_msginfo->account_login)
 925                 msginfo->account_login = g_strdup
 926                         (full_msginfo->account_login);
 927         msginfo->planned_download = full_msginfo->planned_download;
 928         procmsg_msginfo_free(full_msginfo);
 929
 930         return procmsg_msginfo_new_ref(msginfo);
 931 }
 932
 933 void procmsg_msginfo_free(MsgInfo *msginfo)
 934 {
 935         if (msginfo == NULL) return;
 936
 937         msginfo->refcnt--;
 938         if (msginfo->refcnt > 0)
 939                 return;
 940
 941         if (msginfo->to_folder) {
 942                 msginfo->to_folder->op_count--;
 943                 folder_item_update(msginfo->to_folder, F_ITEM_UPDATE_MSGCNT);
 944         }
 945
 946         g_free(msginfo->fromspace);
 947         g_free(msginfo->references);
 948         g_free(msginfo->returnreceiptto);
 949         g_free(msginfo->dispositionnotificationto);
 950         g_free(msginfo->xface);
 951
 952         g_free(msginfo->fromname);
 953
 954         g_free(msginfo->date);
 955         g_free(msginfo->from);
 956         g_free(msginfo->to);
 957         g_free(msginfo->cc);
 958         g_free(msginfo->newsgroups);
 959         g_free(msginfo->subject);
 960         g_free(msginfo->msgid);
 961         g_free(msginfo->inreplyto);
 962         g_free(msginfo->xref);
 963
 964         g_free(msginfo->partial_recv);
 965         g_free(msginfo->account_server);
 966         g_free(msginfo->account_login);
 967
 968         g_free(msginfo->plaintext_file);
 969
 970         g_free(msginfo);
 971 }
 972
 973 guint procmsg_msginfo_memusage(MsgInfo *msginfo)
 974 {
 975         guint memusage = 0;
 976
 977         memusage += sizeof(MsgInfo);
 978         if (msginfo->fromname)
 979                 memusage += strlen(msginfo->fromname);
 980         if (msginfo->date)
 981                 memusage += strlen(msginfo->date);
 982         if (msginfo->from)
 983                 memusage += strlen(msginfo->from);
 984         if (msginfo->to)
 985                 memusage += strlen(msginfo->to);
 986         if (msginfo->cc)
 987                 memusage += strlen(msginfo->cc);
 988         if (msginfo->newsgroups)
 989                 memusage += strlen(msginfo->newsgroups);
 990         if (msginfo->subject)
 991                 memusage += strlen(msginfo->subject);
 992         if (msginfo->msgid)
 993                 memusage += strlen(msginfo->msgid);
 994         if (msginfo->inreplyto)
 995                 memusage += strlen(msginfo->inreplyto);
 996         if (msginfo->xface)
 997                 memusage += strlen(msginfo->xface);
 998         if (msginfo->dispositionnotificationto)
 999                 memusage += strlen(msginfo->dispositionnotificationto);
1000         if (msginfo->returnreceiptto)
1001                 memusage += strlen(msginfo->returnreceiptto);
1002         if (msginfo->references)
1003                 memusage += strlen(msginfo->references);
1004         if (msginfo->fromspace)
1005                 memusage += strlen(msginfo->fromspace);
1006
1007         return memusage;
1008 }
1009
1010 gint procmsg_cmp_msgnum_for_sort(gconstpointer a, gconstpointer b)
1011 {
1012         const MsgInfo *msginfo1 = a;
1013         const MsgInfo *msginfo2 = b;
1014
1015         if (!msginfo1)
1016                 return -1;
1017         if (!msginfo2)
1018                 return -1;
1019
1020         return msginfo1->msgnum - msginfo2->msgnum;
1021 }
1022
1023 enum
1024 {
1025         Q_SENDER           = 0,
1026         Q_SMTPSERVER       = 1,
1027         Q_RECIPIENTS       = 2,
1028         Q_NEWSGROUPS       = 3,
1029         Q_MAIL_ACCOUNT_ID  = 4,
1030         Q_NEWS_ACCOUNT_ID  = 5,
1031         Q_SAVE_COPY_FOLDER = 6,
1032         Q_REPLY_MESSAGE_ID = 7,
1033         Q_FWD_MESSAGE_ID   = 8,
1034         Q_PRIVACY_SYSTEM   = 9,
1035         Q_ENCRYPT          = 10,
1036         Q_ENCRYPT_DATA     = 11,
1037 };
1038
1039 gint procmsg_send_message_queue(const gchar *file)
1040 {
1041         static HeaderEntry qentry[] = {{"S:",    NULL, FALSE},
1042                                        {"SSV:",  NULL, FALSE},
1043                                        {"R:",    NULL, FALSE},
1044                                        {"NG:",   NULL, FALSE},
1045                                        {"MAID:", NULL, FALSE},
1046                                        {"NAID:", NULL, FALSE},
1047                                        {"SCF:",  NULL, FALSE},
1048                                        {"RMID:", NULL, FALSE},
1049                                        {"FMID:", NULL, FALSE},
1050                                        {"X-Sylpheed-Privacy-System:", NULL, FALSE},
1051                                        {"X-Sylpheed-Encrypt:", NULL, FALSE},
1052                                        {"X-Sylpheed-Encrypt-Data:", NULL, FALSE},
1053                                        {NULL,    NULL, FALSE}};
1054         FILE *fp;
1055         gint filepos;
1056         gint mailval = 0, newsval = 0;
1057         gchar *from = NULL;
1058         gchar *smtpserver = NULL;
1059         GSList *to_list = NULL;
1060         GSList *newsgroup_list = NULL;
1061         gchar *savecopyfolder = NULL;
1062         gchar *replymessageid = NULL;
1063         gchar *fwdmessageid = NULL;
1064         gchar *privacy_system = NULL;
1065         gboolean encrypt = FALSE;
1066         gchar *encrypt_data = NULL;
1067         gchar buf[BUFFSIZE];
1068         gint hnum;
1069         PrefsAccount *mailac = NULL, *newsac = NULL;
1070         int local = 0;
1071
1072         g_return_val_if_fail(file != NULL, -1);
1073
1074         if ((fp = fopen(file, "rb")) == NULL) {
1075                 FILE_OP_ERROR(file, "fopen");
1076                 return -1;
1077         }
1078
1079         while ((hnum = procheader_get_one_field(buf, sizeof(buf), fp, qentry))
1080                != -1) {
1081                 gchar *p = buf + strlen(qentry[hnum].name);
1082
1083                 switch (hnum) {
1084                 case Q_SENDER:
1085                         if (!from) from = g_strdup(p);
1086                         break;
1087                 case Q_SMTPSERVER:
1088                         if (!smtpserver) smtpserver = g_strdup(p);
1089                         break;
1090                 case Q_RECIPIENTS:
1091                         to_list = address_list_append(to_list, p);
1092                         break;
1093                 case Q_NEWSGROUPS:
1094                         newsgroup_list = newsgroup_list_append(newsgroup_list, p);
1095                         break;
1096                 case Q_MAIL_ACCOUNT_ID:
1097                         mailac = account_find_from_id(atoi(p));
1098                         break;
1099                 case Q_NEWS_ACCOUNT_ID:
1100                         newsac = account_find_from_id(atoi(p));
1101                         break;
1102                 case Q_SAVE_COPY_FOLDER:
1103                         if (!savecopyfolder) savecopyfolder = g_strdup(p);
1104                         break;
1105                 case Q_REPLY_MESSAGE_ID:
1106                         if (!replymessageid) replymessageid = g_strdup(p);
1107                         break;
1108                 case Q_FWD_MESSAGE_ID:
1109                         if (!fwdmessageid) fwdmessageid = g_strdup(p);
1110                         break;
1111                 case Q_PRIVACY_SYSTEM:
1112                         if (privacy_system == NULL) privacy_system = g_strdup(p);
1113                         break;
1114                 case Q_ENCRYPT:
1115                         if (p[0] == '1') encrypt = TRUE;
1116                         break;
1117                 case Q_ENCRYPT_DATA:
1118                         if (encrypt_data == NULL) encrypt_data = g_strdup(p);
1119                         break;
1120                 }
1121         }
1122         filepos = ftell(fp);
1123
1124         if (encrypt) {
1125                 /* FIXME: memory leaks, in case of errors */
1126                 MimeInfo *mimeinfo;
1127
1128                 fclose(fp);
1129
1130                 mimeinfo = procmime_scan_queue_file(file);
1131                 if (!privacy_encrypt(privacy_system, mimeinfo, encrypt_data))
1132                         return -1;
1133
1134                 fp = my_tmpfile();
1135                 if (procmime_write_mimeinfo(mimeinfo, fp) < 0) {
1136                         fclose(fp);
1137                         return -1;
1138                 }
1139                 procmime_mimeinfo_free_all(mimeinfo);
1140
1141                 rewind(fp);
1142                 filepos = 0;
1143         }
1144
1145         if (to_list) {
1146                 debug_print("Sending message by mail\n");
1147                 if (!from) {
1148                         g_warning("Queued message header is broken.\n");
1149                         mailval = -1;
1150                 } else if (mailac && mailac->use_mail_command &&
1151                            mailac->mail_command && (* mailac->mail_command)) {
1152                         mailval = send_message_local(mailac->mail_command, fp);
1153                         local = 1;
1154                 } else {
1155                         if (!mailac) {
1156                                 mailac = account_find_from_smtp_server(from, smtpserver);
1157                                 if (!mailac) {
1158                                         g_warning("Account not found. "
1159                                                     "Using current account...\n");
1160                                         mailac = cur_account;
1161                                 }
1162                         }
1163
1164                         if (mailac)
1165                                 mailval = send_message_smtp(mailac, to_list, fp);
1166                         else {
1167                                 PrefsAccount tmp_ac;
1168
1169                                 g_warning("Account not found.\n");
1170
1171                                 memset(&tmp_ac, 0, sizeof(PrefsAccount));
1172                                 tmp_ac.address = from;
1173                                 tmp_ac.smtp_server = smtpserver;
1174                                 tmp_ac.smtpport = SMTP_PORT;
1175                                 mailval = send_message_smtp(&tmp_ac, to_list, fp);
1176                         }
1177                 }
1178         }
1179
1180         fseek(fp, filepos, SEEK_SET);
1181         if (newsgroup_list && (mailval == 0)) {
1182                 Folder *folder;
1183                 gchar *tmp = NULL;
1184                 FILE *tmpfp;
1185
1186                 /* write to temporary file */
1187                 tmp = g_strdup_printf("%s%ctmp%d", g_get_tmp_dir(),
1188                             G_DIR_SEPARATOR, (gint)file);
1189                 if ((tmpfp = fopen(tmp, "wb")) == NULL) {
1190                         FILE_OP_ERROR(tmp, "fopen");
1191                         newsval = -1;
1192                         alertpanel_error(_("Could not create temporary file for news sending."));
1193                 } else {
1194                         if (change_file_mode_rw(tmpfp, tmp) < 0) {
1195                                 FILE_OP_ERROR(tmp, "chmod");
1196                                 g_warning("can't change file mode\n");
1197                         }
1198
1199                         while ((newsval == 0) && fgets(buf, sizeof(buf), fp) != NULL) {
1200                                 if (fputs(buf, tmpfp) == EOF) {
1201                                         FILE_OP_ERROR(tmp, "fputs");
1202                                         newsval = -1;
1203                                         alertpanel_error(_("Error when writing temporary file for news sending."));
1204                                 }
1205                         }
1206                         fclose(tmpfp);
1207
1208                         if (newsval == 0) {
1209                                 debug_print("Sending message by news\n");
1210
1211                                 folder = FOLDER(newsac->folder);
1212
1213                                 newsval = news_post(folder, tmp);
1214                                 if (newsval < 0) {
1215                                         alertpanel_error(_("Error occurred while posting the message to %s ."),
1216                                                  newsac->nntp_server);
1217                                 }
1218                         }
1219                         unlink(tmp);
1220                 }
1221                 g_free(tmp);
1222         }
1223
1224         slist_free_strings(to_list);
1225         g_slist_free(to_list);
1226         slist_free_strings(newsgroup_list);
1227         g_slist_free(newsgroup_list);
1228         g_free(from);
1229         g_free(smtpserver);
1230         fclose(fp);
1231
1232         /* save message to outbox */
1233         if (mailval == 0 && newsval == 0 && savecopyfolder) {
1234                 FolderItem *outbox;
1235
1236                 debug_print("saving sent message...\n");
1237
1238                 outbox = folder_find_item_from_identifier(savecopyfolder);
1239                 if (!outbox)
1240                         outbox = folder_get_default_outbox();
1241
1242                 procmsg_save_to_outbox(outbox, file, TRUE);
1243         }
1244
1245         if (replymessageid != NULL || fwdmessageid != NULL) {
1246                 gchar **tokens;
1247                 FolderItem *item;
1248
1249                 if (replymessageid != NULL)
1250                         tokens = g_strsplit(replymessageid, "\x7f", 0);
1251                 else
1252                         tokens = g_strsplit(fwdmessageid, "\x7f", 0);
1253                 item = folder_find_item_from_identifier(tokens[0]);
1254
1255                 /* check if queued message has valid folder and message id */
1256                 if (item != NULL && tokens[2] != NULL) {
1257                         MsgInfo *msginfo;
1258
1259                         msginfo = folder_item_get_msginfo(item, atoi(tokens[1]));
1260
1261                         /* check if referring message exists and has a message id */
1262                         if ((msginfo != NULL) &&
1263                             (msginfo->msgid != NULL) &&
1264                             (strcmp(msginfo->msgid, tokens[2]) != 0)) {
1265                                 procmsg_msginfo_free(msginfo);
1266                                 msginfo = NULL;
1267                         }
1268
1269                         if (msginfo == NULL) {
1270                                 msginfo = folder_item_get_msginfo_by_msgid(item, tokens[2]);
1271                         }
1272
1273                         if (msginfo != NULL) {
1274                                 if (replymessageid != NULL) {
1275                                         procmsg_msginfo_unset_flags(msginfo, MSG_FORWARDED, 0);
1276                                         procmsg_msginfo_set_flags(msginfo, MSG_REPLIED, 0);
1277                                 }  else {
1278                                         procmsg_msginfo_unset_flags(msginfo, MSG_REPLIED, 0);
1279                                         procmsg_msginfo_set_flags(msginfo, MSG_FORWARDED, 0);
1280                                 }
1281                                 procmsg_msginfo_free(msginfo);
1282                         }
1283                 }
1284                 g_strfreev(tokens);
1285         }
1286
1287         g_free(savecopyfolder);
1288         g_free(replymessageid);
1289         g_free(fwdmessageid);
1290
1291         return (newsval != 0 ? newsval : mailval);
1292 }
1293
1294 static void update_folder_msg_counts(FolderItem *item, MsgInfo *msginfo, MsgPermFlags old_flags)
1295 {
1296         MsgPermFlags new_flags = msginfo->flags.perm_flags;
1297
1298         /* NEW flag */
1299         if (!(old_flags & MSG_NEW) && (new_flags & MSG_NEW)) {
1300                 item->new_msgs++;
1301         }
1302
1303         if ((old_flags & MSG_NEW) && !(new_flags & MSG_NEW)) {
1304                 item->new_msgs--;
1305         }
1306
1307         /* UNREAD flag */
1308         if (!(old_flags & MSG_UNREAD) && (new_flags & MSG_UNREAD)) {
1309                 item->unread_msgs++;
1310                 if (procmsg_msg_has_marked_parent(msginfo))
1311                         item->unreadmarked_msgs++;
1312         }
1313
1314         if ((old_flags & MSG_UNREAD) && !(new_flags & MSG_UNREAD)) {
1315                 item->unread_msgs--;
1316                 if (procmsg_msg_has_marked_parent(msginfo))
1317                         item->unreadmarked_msgs--;
1318         }
1319
1320         /* MARK flag */
1321         if (!(old_flags & MSG_MARKED) && (new_flags & MSG_MARKED)) {
1322                 procmsg_update_unread_children(msginfo, TRUE);
1323         }
1324
1325         if ((old_flags & MSG_MARKED) && !(new_flags & MSG_MARKED)) {
1326                 procmsg_update_unread_children(msginfo, FALSE);
1327         }
1328 }
1329
1330 void procmsg_msginfo_set_flags(MsgInfo *msginfo, MsgPermFlags perm_flags, MsgTmpFlags tmp_flags)
1331 {
1332         FolderItem *item;
1333         MsgInfoUpdate msginfo_update;
1334         MsgPermFlags perm_flags_new, perm_flags_old;
1335         MsgTmpFlags tmp_flags_old;
1336
1337         g_return_if_fail(msginfo != NULL);
1338         item = msginfo->folder;
1339         g_return_if_fail(item != NULL);
1340
1341         debug_print("Setting flags for message %d in folder %s\n", msginfo->msgnum, item->path);
1342
1343         /* Perm Flags handling */
1344         perm_flags_old = msginfo->flags.perm_flags;
1345         perm_flags_new = msginfo->flags.perm_flags | perm_flags;
1346         if ((perm_flags & MSG_IGNORE_THREAD) || (perm_flags_old & MSG_IGNORE_THREAD)) {
1347                 perm_flags_new &= ~(MSG_NEW | MSG_UNREAD);
1348         }
1349
1350         if (perm_flags_old != perm_flags_new) {
1351                 folder_item_change_msg_flags(msginfo->folder, msginfo, perm_flags_new);
1352
1353                 update_folder_msg_counts(item, msginfo, perm_flags_old);
1354
1355         }
1356
1357         /* Tmp flags handling */
1358         tmp_flags_old = msginfo->flags.tmp_flags;
1359         msginfo->flags.tmp_flags |= tmp_flags;
1360
1361         /* update notification */
1362         if ((perm_flags_old != perm_flags_new) || (tmp_flags_old != msginfo->flags.tmp_flags)) {
1363                 msginfo_update.msginfo = msginfo;
1364                 msginfo_update.flags = MSGINFO_UPDATE_FLAGS;
1365                 hooks_invoke(MSGINFO_UPDATE_HOOKLIST, &msginfo_update);
1366                 folder_item_update(msginfo->folder, F_ITEM_UPDATE_MSGCNT);
1367         }
1368 }
1369
1370 void procmsg_msginfo_unset_flags(MsgInfo *msginfo, MsgPermFlags perm_flags, MsgTmpFlags tmp_flags)
1371 {
1372         FolderItem *item;
1373         MsgInfoUpdate msginfo_update;
1374         MsgPermFlags perm_flags_new, perm_flags_old;
1375         MsgTmpFlags tmp_flags_old;
1376
1377         g_return_if_fail(msginfo != NULL);
1378         item = msginfo->folder;
1379         g_return_if_fail(item != NULL);
1380
1381         debug_print("Unsetting flags for message %d in folder %s\n", msginfo->msgnum, item->path);
1382
1383         /* Perm Flags handling */
1384         perm_flags_old = msginfo->flags.perm_flags;
1385         perm_flags_new = msginfo->flags.perm_flags & ~perm_flags;
1386
1387         if (perm_flags_old != perm_flags_new) {
1388                 folder_item_change_msg_flags(msginfo->folder, msginfo, perm_flags_new);
1389
1390                 update_folder_msg_counts(item, msginfo, perm_flags_old);
1391
1392                 msginfo_update.msginfo = msginfo;
1393                 msginfo_update.flags = MSGINFO_UPDATE_FLAGS;
1394                 hooks_invoke(MSGINFO_UPDATE_HOOKLIST, &msginfo_update);
1395                 folder_item_update(msginfo->folder, F_ITEM_UPDATE_MSGCNT);
1396         }
1397
1398         /* Tmp flags hanlding */
1399         tmp_flags_old = msginfo->flags.tmp_flags;
1400         msginfo->flags.tmp_flags &= ~tmp_flags;
1401
1402         /* update notification */
1403         if ((perm_flags_old != perm_flags_new) || (tmp_flags_old != msginfo->flags.tmp_flags)) {
1404                 msginfo_update.msginfo = msginfo;
1405                 msginfo_update.flags = MSGINFO_UPDATE_FLAGS;
1406                 hooks_invoke(MSGINFO_UPDATE_HOOKLIST, &msginfo_update);
1407                 folder_item_update(msginfo->folder, F_ITEM_UPDATE_MSGCNT);
1408         }
1409 }
1410
1411 /*!
1412  *\brief        check for flags (e.g. mark) in prior msgs of current thread
1413  *
1414  *\param        info Current message
1415  *\param        perm_flags Flags to be checked
1416  *\param        parentmsgs Hash of prior msgs to avoid loops
1417  *
1418  *\return       gboolean TRUE if perm_flags are found
1419  */
1420 gboolean procmsg_msg_has_flagged_parent_real(MsgInfo *info,
1421                 MsgPermFlags perm_flags, GHashTable *parentmsgs)
1422 {
1423         MsgInfo *tmp;
1424
1425         g_return_val_if_fail(info != NULL, FALSE);
1426
1427         if (info != NULL && info->folder != NULL && info->inreplyto != NULL) {
1428                 tmp = folder_item_get_msginfo_by_msgid(info->folder,
1429                                 info->inreplyto);
1430                 if (tmp && (tmp->flags.perm_flags & perm_flags)) {
1431                         procmsg_msginfo_free(tmp);
1432                         return TRUE;
1433                 } else if (tmp != NULL) {
1434                         gboolean result;
1435
1436                         if (g_hash_table_lookup(parentmsgs, info)) {
1437                                 debug_print("loop detected: %s%c%d\n",
1438                                         folder_item_get_path(info->folder),
1439                                         G_DIR_SEPARATOR, info->msgnum);
1440                                 result = FALSE;
1441                         } else {
1442                                 g_hash_table_insert(parentmsgs, info, "1");
1443                                 result = procmsg_msg_has_flagged_parent_real(
1444                                     tmp, perm_flags, parentmsgs);
1445                         }
1446                         procmsg_msginfo_free(tmp);
1447                         return result;
1448                 } else {
1449                         return FALSE;
1450                 }
1451         } else
1452                 return FALSE;
1453 }
1454
1455 /*!
1456  *\brief        Callback for cleaning up hash of parentmsgs
1457  */
1458 gboolean parentmsgs_hash_remove(gpointer key,
1459                             gpointer value,
1460                             gpointer user_data)
1461 {
1462         return TRUE;
1463 }
1464
1465 /*!
1466  *\brief        Set up list of parentmsgs
1467  *              See procmsg_msg_has_flagged_parent_real()
1468  */
1469 gboolean procmsg_msg_has_flagged_parent(MsgInfo *info, MsgPermFlags perm_flags)
1470 {
1471         gboolean result;
1472         GHashTable *parentmsgs = g_hash_table_new(NULL, NULL);
1473
1474         result = procmsg_msg_has_flagged_parent_real(info, perm_flags, parentmsgs);
1475         g_hash_table_foreach_remove(parentmsgs, parentmsgs_hash_remove, NULL);
1476         g_hash_table_destroy(parentmsgs);
1477         return result;
1478 }
1479
1480 /*!
1481  *\brief        Check if msgs prior in thread are marked
1482  *              See procmsg_msg_has_flagged_parent_real()
1483  */
1484 gboolean procmsg_msg_has_marked_parent(MsgInfo *info)
1485 {
1486         return procmsg_msg_has_flagged_parent(info, MSG_MARKED);
1487 }
1488
1489
1490 GSList *procmsg_find_children_func(MsgInfo *info,
1491                                    GSList *children, GSList *all)
1492 {
1493         GSList *cur;
1494
1495         g_return_val_if_fail(info!=NULL, children);
1496         if (info->msgid == NULL)
1497                 return children;
1498
1499         for (cur = all; cur != NULL; cur = g_slist_next(cur)) {
1500                 MsgInfo *tmp = (MsgInfo *)cur->data;
1501                 if (tmp->inreplyto && !strcmp(tmp->inreplyto, info->msgid)) {
1502                         /* Check if message is already in the list */
1503                         if ((children == NULL) ||
1504                             (g_slist_index(children, tmp) == -1)) {
1505                                 children = g_slist_prepend(children,
1506                                                 procmsg_msginfo_new_ref(tmp));
1507                                 children = procmsg_find_children_func(tmp,
1508                                                         children,
1509                                                         all);
1510                         }
1511                 }
1512         }
1513         return children;
1514 }
1515
1516 GSList *procmsg_find_children (MsgInfo *info)
1517 {
1518         GSList *children;
1519         GSList *all, *cur;
1520
1521         g_return_val_if_fail(info!=NULL, NULL);
1522         all = folder_item_get_msg_list(info->folder);
1523         children = procmsg_find_children_func(info, NULL, all);
1524         if (children != NULL) {
1525                 for (cur = all; cur != NULL; cur = g_slist_next(cur)) {
1526                         /* this will not free the used pointers
1527                            created with procmsg_msginfo_new_ref */
1528                         procmsg_msginfo_free((MsgInfo *)cur->data);
1529                 }
1530         }
1531         g_slist_free(all);
1532
1533         return children;
1534 }
1535
1536 void procmsg_update_unread_children(MsgInfo *info, gboolean newly_marked)
1537 {
1538         GSList *children = procmsg_find_children(info);
1539         GSList *cur;
1540         for (cur = children; cur != NULL; cur = g_slist_next(cur)) {
1541                 MsgInfo *tmp = (MsgInfo *)cur->data;
1542                 if(MSG_IS_UNREAD(tmp->flags) && !MSG_IS_IGNORE_THREAD(tmp->flags)) {
1543                         if(newly_marked)
1544                                 info->folder->unreadmarked_msgs++;
1545                         else
1546                                 info->folder->unreadmarked_msgs--;
1547                         folder_item_update(info->folder, F_ITEM_UPDATE_MSGCNT);
1548                 }
1549                 procmsg_msginfo_free(tmp);
1550         }
1551         g_slist_free(children);
1552 }
1553
1554 /**
1555  * Set the destination folder for a copy or move operation
1556  *
1557  * \param msginfo The message which's destination folder is changed
1558  * \param to_folder The destination folder for the operation
1559  */
1560 void procmsg_msginfo_set_to_folder(MsgInfo *msginfo, FolderItem *to_folder)
1561 {
1562         if(msginfo->to_folder != NULL) {
1563                 msginfo->to_folder->op_count--;
1564                 folder_item_update(msginfo->to_folder, F_ITEM_UPDATE_MSGCNT);
1565         }
1566         msginfo->to_folder = to_folder;
1567         if(to_folder != NULL) {
1568                 to_folder->op_count++;
1569                 folder_item_update(msginfo->to_folder, F_ITEM_UPDATE_MSGCNT);
1570         }
1571 }
1572
1573 /**
1574  * Apply filtering actions to the msginfo
1575  *
1576  * \param msginfo The MsgInfo describing the message that should be filtered
1577  * \return TRUE if the message was moved and MsgInfo is now invalid,
1578  *         FALSE otherwise
1579  */
1580 gboolean procmsg_msginfo_filter(MsgInfo *msginfo)
1581 {
1582         MailFilteringData mail_filtering_data;
1583
1584         mail_filtering_data.msginfo = msginfo;
1585         if (hooks_invoke(MAIL_FILTERING_HOOKLIST, &mail_filtering_data))
1586                 return TRUE;
1587
1588         /* filter if enabled in prefs or move to inbox if not */
1589         if((filtering_rules != NULL) &&
1590            filter_message_by_msginfo(filtering_rules, msginfo))
1591                 return TRUE;
1592
1593         return FALSE;
1594 }