src/mh.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2013 Hiroyuki Yamamoto and the Claws Mail 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 3 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, see <http://www.gnu.org/licenses/>.
  17  *
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #include "claws-features.h"
  23 #endif
  24
  25 #include "defs.h"
  26
  27 #include <glib.h>
  28 #include <glib/gi18n.h>
  29 #include <dirent.h>
  30 #include <sys/stat.h>
  31 #include <unistd.h>
  32 #include <string.h>
  33 #include <errno.h>
  34 #include <time.h>
  35
  36 #include "folder.h"
  37 #include "folder_item_prefs.h"
  38 #include "mh.h"
  39 #include "procmsg.h"
  40 #include "procheader.h"
  41 #include "utils.h"
  42 #include "codeconv.h"
  43 #include "statusbar.h"
  44 #include "gtkutils.h"
  45 #include "timing.h"
  46 #include "msgcache.h"
  47
  48 /* Define possible missing constants for Windows. */
  49 #ifdef G_OS_WIN32
  50 # ifndef S_IRGRP
  51 # define S_IRGRP 0
  52 # define S_IWGRP 0
  53 # endif
  54 # ifndef S_IROTH
  55 # define S_IROTH 0
  56 # define S_IWOTH 0
  57 # endif
  58 #endif
  59
  60
  61 static void     mh_folder_init          (Folder         *folder,
  62                                          const gchar    *name,
  63                                          const gchar    *path);
  64
  65 static Folder   *mh_folder_new          (const gchar    *name,
  66                                          const gchar    *path);
  67 static void     mh_folder_destroy       (Folder         *folder);
  68 static gchar   *mh_fetch_msg            (Folder         *folder,
  69                                          FolderItem     *item,
  70                                          gint            num);
  71 static MsgInfo *mh_get_msginfo          (Folder         *folder,
  72                                          FolderItem     *item,
  73                                          gint            num);
  74 static gint     mh_add_msg              (Folder         *folder,
  75                                          FolderItem     *dest,
  76                                          const gchar    *file,
  77                                          MsgFlags       *flags);
  78 static gint     mh_add_msgs             (Folder         *folder,
  79                                          FolderItem     *dest,
  80                                          GSList         *file_list,
  81                                          GHashTable     *relation);
  82 static gint     mh_copy_msg             (Folder         *folder,
  83                                          FolderItem     *dest,
  84                                          MsgInfo        *msginfo);
  85 static gint     mh_copy_msgs            (Folder         *folder,
  86                                          FolderItem     *dest,
  87                                          MsgInfoList    *msglist,
  88                                          GHashTable     *relation);
  89 static gint     mh_remove_msg           (Folder         *folder,
  90                                          FolderItem     *item,
  91                                          gint            num);
  92 static gint     mh_remove_msgs          (Folder         *folder,
  93                                          FolderItem     *item,
  94                                          MsgInfoList    *msglist,
  95                                          GHashTable     *relation);
  96 static gint     mh_remove_all_msg       (Folder         *folder,
  97                                          FolderItem     *item);
  98 static gboolean mh_is_msg_changed       (Folder         *folder,
  99                                          FolderItem     *item,
 100                                          MsgInfo        *msginfo);
 101
 102 static gint     mh_get_num_list         (Folder         *folder,
 103                                          FolderItem     *item,
 104                                          GSList         **list,
 105                                          gboolean       *old_uids_valid);
 106 static gint     mh_scan_tree            (Folder         *folder);
 107
 108 static gint    mh_create_tree           (Folder         *folder);
 109 static FolderItem *mh_create_folder     (Folder         *folder,
 110                                          FolderItem     *parent,
 111                                          const gchar    *name);
 112 static gint    mh_rename_folder         (Folder         *folder,
 113                                          FolderItem     *item,
 114                                          const gchar    *name);
 115 static gint    mh_remove_folder         (Folder         *folder,
 116                                          FolderItem     *item);
 117
 118 static gchar   *mh_get_new_msg_filename         (FolderItem     *dest);
 119
 120 static MsgInfo *mh_parse_msg                    (const gchar    *file,
 121                                                  FolderItem     *item);
 122 static void     mh_remove_missing_folder_items  (Folder         *folder);
 123 static gchar    *mh_filename_from_utf8          (const gchar    *path);
 124 static gchar    *mh_filename_to_utf8            (const gchar    *path);
 125 static void     mh_scan_tree_recursive          (FolderItem     *item);
 126
 127 static gboolean mh_rename_folder_func           (GNode          *node,
 128                                                  gpointer        data);
 129 static gchar   *mh_item_get_path                (Folder *folder,
 130                                                  FolderItem *item);
 131
 132 static gboolean mh_scan_required        (Folder         *folder,
 133                                          FolderItem     *item);
 134 static void mh_set_mtime                (Folder         *folder,
 135                                          FolderItem *item);
 136 static int mh_item_close                (Folder         *folder,
 137                                          FolderItem     *item);
 138 #if 0
 139 static gint mh_get_flags                (Folder *folder, FolderItem *item,
 140                                          MsgInfoList *msginfo_list, GHashTable *msgflags);
 141 #endif
 142 static void mh_write_sequences          (FolderItem     *item, gboolean remove_unseen);
 143
 144 static FolderClass mh_class;
 145
 146 FolderClass *mh_get_class(void)
 147 {
 148         if (mh_class.idstr == NULL) {
 149                 mh_class.type = F_MH;
 150                 mh_class.idstr = "mh";
 151                 mh_class.uistr = "MH";
 152                 mh_class.supports_server_search = FALSE;
 153
 154                 /* Folder functions */
 155                 mh_class.new_folder = mh_folder_new;
 156                 mh_class.destroy_folder = mh_folder_destroy;
 157                 mh_class.set_xml = folder_local_set_xml;
 158                 mh_class.get_xml = folder_local_get_xml;
 159                 mh_class.scan_tree = mh_scan_tree;
 160                 mh_class.create_tree = mh_create_tree;
 161
 162                 /* FolderItem functions */
 163                 mh_class.item_get_path = mh_item_get_path;
 164                 mh_class.create_folder = mh_create_folder;
 165                 mh_class.rename_folder = mh_rename_folder;
 166                 mh_class.remove_folder = mh_remove_folder;
 167                 mh_class.get_num_list = mh_get_num_list;
 168                 mh_class.scan_required = mh_scan_required;
 169                 mh_class.set_mtime = mh_set_mtime;
 170                 mh_class.close = mh_item_close;
 171                 mh_class.get_flags = NULL; /*mh_get_flags */;
 172
 173                 /* Message functions */
 174                 mh_class.get_msginfo = mh_get_msginfo;
 175                 mh_class.fetch_msg = mh_fetch_msg;
 176                 mh_class.add_msg = mh_add_msg;
 177                 mh_class.add_msgs = mh_add_msgs;
 178                 mh_class.copy_msg = mh_copy_msg;
 179                 mh_class.copy_msgs = mh_copy_msgs;
 180                 mh_class.search_msgs = folder_item_search_msgs_local;
 181                 mh_class.remove_msg = mh_remove_msg;
 182                 mh_class.remove_msgs = mh_remove_msgs;
 183                 mh_class.remove_all_msg = mh_remove_all_msg;
 184                 mh_class.is_msg_changed = mh_is_msg_changed;
 185         }
 186
 187         return &mh_class;
 188 }
 189
 190 static Folder *mh_folder_new(const gchar *name, const gchar *path)
 191 {
 192         Folder *folder;
 193
 194         folder = (Folder *)g_new0(MHFolder, 1);
 195         folder->klass = &mh_class;
 196         mh_folder_init(folder, name, path);
 197
 198         return folder;
 199 }
 200
 201 static void mh_folder_destroy(Folder *folder)
 202 {
 203         folder_local_folder_destroy(LOCAL_FOLDER(folder));
 204 }
 205
 206 static void mh_folder_init(Folder *folder, const gchar *name, const gchar *path)
 207 {
 208         folder_local_folder_init(folder, name, path);
 209
 210 }
 211
 212 gboolean mh_scan_required(Folder *folder, FolderItem *item)
 213 {
 214         gchar *path;
 215         GStatBuf s;
 216
 217         path = folder_item_get_path(item);
 218         cm_return_val_if_fail(path != NULL, FALSE);
 219
 220         if (g_stat(path, &s) < 0) {
 221                 FILE_OP_ERROR(path, "stat");
 222                 g_free(path);
 223                 return FALSE;
 224         }
 225
 226         if ((s.st_mtime > item->mtime) &&
 227                 (s.st_mtime - 3600 != item->mtime)) {
 228                 debug_print("MH scan required, folder updated: %s (%ld > %ld)\n",
 229                             path?path:"(null)",
 230                             (long int) s.st_mtime,
 231                             (long int) item->mtime);
 232                 g_free(path);
 233                 return TRUE;
 234         }
 235
 236         debug_print("MH scan not required: %s (%ld <= %ld)\n",
 237                     path?path:"(null)",
 238                     (long int) s.st_mtime,
 239                     (long int) item->mtime);
 240         g_free(path);
 241         return FALSE;
 242 }
 243
 244 static void mh_get_last_num(Folder *folder, FolderItem *item)
 245 {
 246         gchar *path;
 247         GDir *dp;
 248         const gchar *d;
 249         GError *error = NULL;
 250         gint max = 0;
 251         gint num;
 252
 253         cm_return_if_fail(item != NULL);
 254
 255         debug_print("mh_get_last_num(): Scanning %s ...\n", item->path?item->path:"(null)");
 256
 257         path = folder_item_get_path(item);
 258         cm_return_if_fail(path != NULL);
 259         if (change_dir(path) < 0) {
 260                 g_free(path);
 261                 return;
 262         }
 263         g_free(path);
 264
 265         if ((dp = g_dir_open(".", 0, &error)) == NULL) {
 266                 g_message("Couldn't open current directory: %s (%d).\n",
 267                                 error->message, error->code);
 268                 g_error_free(error);
 269                 return;
 270         }
 271
 272         while ((d = g_dir_read_name(dp)) != NULL) {
 273                 if ((num = to_number(d)) > 0 &&
 274                     g_file_test(d, G_FILE_TEST_IS_REGULAR)) {
 275                         if (max < num)
 276                                 max = num;
 277                 }
 278                 if (num % 2000 == 0)
 279                         GTK_EVENTS_FLUSH();
 280         }
 281         g_dir_close(dp);
 282
 283         debug_print("Last number in dir %s = %d\n", item->path?item->path:"(null)", max);
 284         item->last_num = max;
 285 }
 286
 287 gint mh_get_num_list(Folder *folder, FolderItem *item, GSList **list, gboolean *old_uids_valid)
 288 {
 289
 290         gchar *path;
 291         GDir *dp;
 292         const gchar *d;
 293         GError *error = NULL;
 294         gint num, nummsgs = 0;
 295
 296         cm_return_val_if_fail(item != NULL, -1);
 297
 298         debug_print("mh_get_num_list(): Scanning %s ...\n", item->path?item->path:"(null)");
 299
 300         *old_uids_valid = TRUE;
 301
 302         path = folder_item_get_path(item);
 303         cm_return_val_if_fail(path != NULL, -1);
 304         if (change_dir(path) < 0) {
 305                 g_free(path);
 306                 return -1;
 307         }
 308         g_free(path);
 309
 310         if ((dp = g_dir_open(".", 0, &error)) == NULL) {
 311                 g_message("Couldn't open current directory: %s (%d).\n",
 312                                 error->message, error->code);
 313                 g_error_free(error);
 314                 return -1;
 315         }
 316
 317         while ((d = g_dir_read_name(dp)) != NULL) {
 318                 if ((num = to_number(d)) > 0) {
 319                         *list = g_slist_prepend(*list, GINT_TO_POINTER(num));
 320                         nummsgs++;
 321                 }
 322         }
 323         g_dir_close(dp);
 324
 325         mh_set_mtime(folder, item);
 326         return nummsgs;
 327 }
 328
 329 static gchar *mh_fetch_msg(Folder *folder, FolderItem *item, gint num)
 330 {
 331         gchar *path;
 332         gchar *file;
 333
 334         cm_return_val_if_fail(item != NULL, NULL);
 335         cm_return_val_if_fail(num > 0, NULL);
 336
 337         path = folder_item_get_path(item);
 338         file = g_strconcat(path, G_DIR_SEPARATOR_S, itos(num), NULL);
 339
 340         if (!is_file_exist(file)) {
 341                 g_free(file);
 342                 g_free(path);
 343                 return NULL;
 344         }
 345         g_free(path);
 346         return file;
 347 }
 348
 349 static MsgInfo *mh_get_msginfo(Folder *folder, FolderItem *item, gint num)
 350 {
 351         MsgInfo *msginfo;
 352         gchar *file;
 353
 354         cm_return_val_if_fail(item != NULL, NULL);
 355         if (num <= 0)
 356                 return NULL;
 357
 358         file = mh_fetch_msg(folder, item, num);
 359         if (!file) return NULL;
 360
 361         msginfo = mh_parse_msg(file, item);
 362         if (msginfo)
 363                 msginfo->msgnum = num;
 364
 365         g_free(file);
 366
 367         return msginfo;
 368 }
 369
 370 static gchar *mh_get_new_msg_filename(FolderItem *dest)
 371 {
 372         gchar *destfile;
 373         gchar *destpath;
 374
 375         destpath = folder_item_get_path(dest);
 376         cm_return_val_if_fail(destpath != NULL, NULL);
 377
 378         if (dest->last_num < 0) {
 379                 mh_get_last_num(dest->folder, dest);
 380                 if (dest->last_num < 0) return NULL;
 381         }
 382
 383         if (!is_dir_exist(destpath))
 384                 make_dir_hier(destpath);
 385
 386         for (;;) {
 387                 destfile = g_strdup_printf("%s%c%d", destpath, G_DIR_SEPARATOR,
 388                                            dest->last_num + 1);
 389                 if (is_file_entry_exist(destfile)) {
 390                         dest->last_num++;
 391                         g_free(destfile);
 392                 } else
 393                         break;
 394         }
 395
 396         g_free(destpath);
 397
 398         return destfile;
 399 }
 400
 401 static gint mh_add_msg(Folder *folder, FolderItem *dest, const gchar *file, MsgFlags *flags)
 402 {
 403         gint ret;
 404         GSList file_list;
 405         MsgFileInfo fileinfo;
 406
 407         cm_return_val_if_fail(file != NULL, -1);
 408
 409         fileinfo.msginfo = NULL;
 410         fileinfo.file = (gchar *)file;
 411         fileinfo.flags = flags;
 412         file_list.data = &fileinfo;
 413         file_list.next = NULL;
 414
 415         ret = mh_add_msgs(folder, dest, &file_list, NULL);
 416         return ret;
 417 }
 418
 419 static gint mh_add_msgs(Folder *folder, FolderItem *dest, GSList *file_list,
 420                  GHashTable *relation)
 421 {
 422         gchar *destfile;
 423         GSList *cur;
 424         MsgFileInfo *fileinfo;
 425
 426         cm_return_val_if_fail(dest != NULL, -1);
 427         cm_return_val_if_fail(file_list != NULL, -1);
 428
 429         if (dest->last_num < 0) {
 430                 mh_get_last_num(folder, dest);
 431                 if (dest->last_num < 0) return -1;
 432         }
 433
 434         for (cur = file_list; cur != NULL; cur = cur->next) {
 435                 fileinfo = (MsgFileInfo *)cur->data;
 436
 437                 destfile = mh_get_new_msg_filename(dest);
 438                 if (destfile == NULL) return -1;
 439
 440 #ifdef G_OS_UNIX
 441                 if (link(fileinfo->file, destfile) < 0) {
 442 #endif
 443                         if (copy_file(fileinfo->file, destfile, TRUE) < 0) {
 444                                 g_warning("can't copy message %s to %s",
 445                                           fileinfo->file, destfile);
 446                                 g_free(destfile);
 447                                 return -1;
 448                         }
 449 #ifdef G_OS_UNIX
 450                 }
 451 #endif
 452
 453                 if (relation != NULL)
 454                         g_hash_table_insert(relation, fileinfo, GINT_TO_POINTER(dest->last_num + 1));
 455                 g_free(destfile);
 456                 dest->last_num++;
 457         }
 458         mh_write_sequences(dest, TRUE);
 459         return dest->last_num;
 460 }
 461
 462 static gint mh_copy_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
 463 {
 464         GSList msglist;
 465
 466         cm_return_val_if_fail(msginfo != NULL, -1);
 467
 468         msglist.data = msginfo;
 469         msglist.next = NULL;
 470
 471         return mh_copy_msgs(folder, dest, &msglist, NULL);
 472 }
 473
 474 static gint mh_copy_msgs(Folder *folder, FolderItem *dest, MsgInfoList *msglist,
 475                          GHashTable *relation)
 476 {
 477         gboolean dest_need_scan = FALSE;
 478         gboolean src_need_scan = FALSE;
 479         FolderItem *src = NULL;
 480         gchar *srcfile;
 481         gchar *destfile;
 482         FolderItemPrefs *prefs;
 483         MsgInfo *msginfo = NULL;
 484         MsgInfoList *cur = NULL;
 485         gint curnum = 0, total = 0;
 486         gchar *srcpath = NULL;
 487         gboolean full_fetch = FALSE;
 488         time_t last_dest_mtime = (time_t)0;
 489         time_t last_src_mtime = (time_t)0;
 490
 491         cm_return_val_if_fail(dest != NULL, -1);
 492         cm_return_val_if_fail(msglist != NULL, -1);
 493
 494         msginfo = (MsgInfo *)msglist->data;
 495
 496         cm_return_val_if_fail(msginfo != NULL, -1);
 497
 498         if (msginfo->folder == dest) {
 499                 g_warning("the src folder is identical to the dest.");
 500                 return -1;
 501         }
 502
 503         if (msginfo->folder->folder != dest->folder)
 504                 full_fetch = TRUE;
 505
 506         if (FOLDER_TYPE(msginfo->folder->folder) == F_MH) {
 507                 src = msginfo->folder;
 508         }
 509
 510         if (dest->last_num < 0) {
 511                 mh_get_last_num(folder, dest);
 512                 if (dest->last_num < 0) return -1;
 513         }
 514
 515         prefs = dest->prefs;
 516
 517         srcpath = folder_item_get_path(msginfo->folder);
 518
 519         dest_need_scan = mh_scan_required(dest->folder, dest);
 520         last_dest_mtime = dest->mtime;
 521
 522         if (src) {
 523                 src_need_scan = mh_scan_required(src->folder, src);
 524                 last_src_mtime = src->mtime;
 525         }
 526
 527         total = g_slist_length(msglist);
 528         if (total > 100) {
 529                 if (MSG_IS_MOVE(msginfo->flags))
 530                         statusbar_print_all(_("Moving messages..."));
 531                 else
 532                         statusbar_print_all(_("Copying messages..."));
 533         }
 534         for (cur = msglist; cur; cur = cur->next) {
 535                 msginfo = (MsgInfo *)cur->data;
 536                 if (!msginfo) {
 537                         goto err_reset_status;
 538                 }
 539                 if (!full_fetch) {
 540                         srcfile = g_strconcat(srcpath,
 541                                 G_DIR_SEPARATOR_S,
 542                                 itos(msginfo->msgnum), NULL);
 543                 } else {
 544                         srcfile = procmsg_get_message_file(msginfo);
 545                 }
 546                 if (!srcfile) {
 547                         goto err_reset_status;
 548                 }
 549                 destfile = mh_get_new_msg_filename(dest);
 550                 if (!destfile) {
 551                         g_free(srcfile);
 552                         goto err_reset_status;
 553                 }
 554
 555                 if (total > 100) {
 556                         statusbar_progress_all(curnum, total, 100);
 557                         if (curnum % 100 == 0)
 558                                 GTK_EVENTS_FLUSH();
 559                         curnum++;
 560                 }
 561
 562                 debug_print("Copying message %s%c%d to %s ...\n",
 563                             msginfo->folder->path, G_DIR_SEPARATOR,
 564                             msginfo->msgnum, dest->path);
 565
 566
 567                 if (MSG_IS_MOVE(msginfo->flags)) {
 568                         msginfo->flags.tmp_flags &= ~MSG_MOVE_DONE;
 569                         if (move_file(srcfile, destfile, TRUE) < 0) {
 570                                 FILE_OP_ERROR(srcfile, "move");
 571                                 if (copy_file(srcfile, destfile, TRUE) < 0) {
 572                                         FILE_OP_ERROR(srcfile, "copy");
 573                                         g_free(srcfile);
 574                                         g_free(destfile);
 575                                         goto err_reset_status;
 576                                 }
 577                         } else {
 578                                 /* say unlinking's not necessary */
 579                                 msginfo->flags.tmp_flags |= MSG_MOVE_DONE;
 580                         }
 581                 } else if (copy_file(srcfile, destfile, TRUE) < 0) {
 582                         FILE_OP_ERROR(srcfile, "copy");
 583                         g_free(srcfile);
 584                         g_free(destfile);
 585                         goto err_reset_status;
 586                 }
 587                 if (prefs && prefs->enable_folder_chmod && prefs->folder_chmod) {
 588                         if (chmod(destfile, prefs->folder_chmod) < 0)
 589                                 FILE_OP_ERROR(destfile, "chmod");
 590                 }
 591                 if (relation) {
 592                         if (g_hash_table_lookup(relation, msginfo) != NULL)
 593                                 g_warning("already in: %p", msginfo);
 594
 595                         g_hash_table_insert(relation, msginfo, GINT_TO_POINTER(dest->last_num+1));
 596                 }
 597                 g_free(srcfile);
 598                 g_free(destfile);
 599                 dest->last_num++;
 600         }
 601
 602         g_free(srcpath);
 603         mh_write_sequences(dest, TRUE);
 604
 605         if (dest->mtime == last_dest_mtime && !dest_need_scan) {
 606                 mh_set_mtime(folder, dest);
 607         }
 608
 609         if (src && src->mtime == last_src_mtime && !src_need_scan) {
 610                 mh_set_mtime(folder, src);
 611         }
 612
 613         if (total > 100) {
 614                 statusbar_progress_all(0,0,0);
 615                 statusbar_pop_all();
 616         }
 617         return dest->last_num;
 618 err_reset_status:
 619         g_free(srcpath);
 620         mh_write_sequences(dest, TRUE);
 621         if (total > 100) {
 622                 statusbar_progress_all(0,0,0);
 623                 statusbar_pop_all();
 624         }
 625         return -1;
 626
 627 }
 628
 629 static gint mh_remove_msg(Folder *folder, FolderItem *item, gint num)
 630 {
 631         gboolean need_scan = FALSE;
 632         time_t last_mtime = (time_t)0;
 633         gchar *file;
 634
 635         cm_return_val_if_fail(item != NULL, -1);
 636
 637         file = mh_fetch_msg(folder, item, num);
 638         cm_return_val_if_fail(file != NULL, -1);
 639
 640         need_scan = mh_scan_required(folder, item);
 641         last_mtime = item->mtime;
 642
 643         if (claws_unlink(file) < 0) {
 644                 FILE_OP_ERROR(file, "unlink");
 645                 g_free(file);
 646                 return -1;
 647         }
 648
 649         if (item->mtime == last_mtime && !need_scan) {
 650                 mh_set_mtime(folder, item);
 651         }
 652         g_free(file);
 653         return 0;
 654 }
 655
 656 static gint mh_remove_msgs(Folder *folder, FolderItem *item,
 657                     MsgInfoList *msglist, GHashTable *relation)
 658 {
 659         gboolean need_scan = FALSE;
 660         gchar *path, *file;
 661         time_t last_mtime = (time_t)0;
 662         MsgInfoList *cur;
 663         gint total = 0, curnum = 0;
 664
 665         cm_return_val_if_fail(item != NULL, -1);
 666
 667         path = folder_item_get_path(item);
 668
 669         need_scan = mh_scan_required(folder, item);
 670         last_mtime = item->mtime;
 671
 672         total = g_slist_length(msglist);
 673         if (total > 100) {
 674                 statusbar_print_all(_("Deleting messages..."));
 675         }
 676
 677         for (cur = msglist; cur; cur = cur->next) {
 678                 MsgInfo *msginfo = (MsgInfo *)cur->data;
 679                 if (msginfo == NULL)
 680                         continue;
 681                 if (MSG_IS_MOVE(msginfo->flags) && MSG_IS_MOVE_DONE(msginfo->flags)) {
 682                         msginfo->flags.tmp_flags &= ~MSG_MOVE_DONE;
 683                         continue;
 684                 }
 685                 if (total > 100) {
 686                         statusbar_progress_all(curnum, total, 100);
 687                         if (curnum % 100 == 0)
 688                                 GTK_EVENTS_FLUSH();
 689                         curnum++;
 690                 }
 691
 692                 file = g_strconcat(path, G_DIR_SEPARATOR_S, itos(msginfo->msgnum), NULL);
 693                 if (file == NULL)
 694                         continue;
 695
 696                 if (claws_unlink(file) < 0) {
 697                         g_free(file);
 698                         continue;
 699                 }
 700
 701                 g_free(file);
 702         }
 703
 704         if (total > 100) {
 705                 statusbar_progress_all(0,0,0);
 706                 statusbar_pop_all();
 707         }
 708         if (item->mtime == last_mtime && !need_scan) {
 709                 mh_set_mtime(folder, item);
 710         }
 711
 712         g_free(path);
 713         return 0;
 714 }
 715
 716 static gint mh_remove_all_msg(Folder *folder, FolderItem *item)
 717 {
 718         gchar *path;
 719         gint val;
 720
 721         cm_return_val_if_fail(item != NULL, -1);
 722
 723         path = folder_item_get_path(item);
 724         cm_return_val_if_fail(path != NULL, -1);
 725         val = remove_all_numbered_files(path);
 726         g_free(path);
 727
 728         mh_write_sequences(item, TRUE);
 729
 730         return val;
 731 }
 732
 733 static gboolean mh_is_msg_changed(Folder *folder, FolderItem *item,
 734                                   MsgInfo *msginfo)
 735 {
 736         GStatBuf s;
 737
 738         if (g_stat(itos(msginfo->msgnum), &s) < 0 ||
 739             msginfo->size  != s.st_size || (
 740                 (msginfo->mtime - s.st_mtime != 0) &&
 741                 (msginfo->mtime - s.st_mtime != 3600) &&
 742                 (msginfo->mtime - s.st_mtime != -3600)))
 743                 return TRUE;
 744
 745         return FALSE;
 746 }
 747
 748 static gint mh_scan_tree(Folder *folder)
 749 {
 750         FolderItem *item;
 751         gchar *rootpath;
 752
 753         cm_return_val_if_fail(folder != NULL, -1);
 754
 755         if (!folder->node) {
 756                 item = folder_item_new(folder, folder->name, NULL);
 757                 item->folder = folder;
 758                 folder->node = item->node = g_node_new(item);
 759         } else
 760                 item = FOLDER_ITEM(folder->node->data);
 761
 762         rootpath = folder_item_get_path(item);
 763         if (change_dir(rootpath) < 0) {
 764                 g_free(rootpath);
 765                 return -1;
 766         }
 767         g_free(rootpath);
 768
 769         mh_create_tree(folder);
 770         mh_remove_missing_folder_items(folder);
 771         mh_scan_tree_recursive(item);
 772
 773         return 0;
 774 }
 775
 776 #define MAKE_DIR_IF_NOT_EXIST(dir) \
 777 { \
 778         if (!is_dir_exist(dir)) { \
 779                 if (is_file_exist(dir)) { \
 780                         g_warning("File '%s' already exists. " \
 781                                     "Can't create folder.", dir); \
 782                         return -1; \
 783                 } \
 784                 if (make_dir_hier(dir) < 0) \
 785                         return -1; \
 786         } \
 787 }
 788
 789 static gint mh_create_tree(Folder *folder)
 790 {
 791         gchar *rootpath, *f;
 792
 793         cm_return_val_if_fail(folder != NULL, -1);
 794
 795         CHDIR_RETURN_VAL_IF_FAIL(get_mail_base_dir(), -1);
 796         rootpath = LOCAL_FOLDER(folder)->rootpath;
 797         MAKE_DIR_IF_NOT_EXIST(rootpath);
 798         CHDIR_RETURN_VAL_IF_FAIL(rootpath, -1);
 799
 800         /* Create special directories as needed */
 801         if (folder->inbox != NULL &&
 802                         folder->inbox->path != NULL)
 803                 f = folder->inbox->path;
 804         else
 805                 f = INBOX_DIR;
 806         MAKE_DIR_IF_NOT_EXIST(f);
 807
 808         if (folder->outbox != NULL &&
 809                         folder->outbox->path != NULL)
 810                 f = folder->outbox->path;
 811         else
 812                 f = OUTBOX_DIR;
 813         MAKE_DIR_IF_NOT_EXIST(f);
 814
 815         if (folder->draft != NULL &&
 816                         folder->draft->path != NULL)
 817                 f = folder->draft->path;
 818         else
 819                 f = DRAFT_DIR;
 820         MAKE_DIR_IF_NOT_EXIST(f);
 821
 822         if (folder->queue != NULL &&
 823                         folder->queue->path != NULL)
 824                 f = folder->queue->path;
 825         else
 826                 f = QUEUE_DIR;
 827         MAKE_DIR_IF_NOT_EXIST(f);
 828
 829         if (folder->trash != NULL &&
 830                         folder->trash->path != NULL)
 831                 f = folder->trash->path;
 832         else
 833                 f = TRASH_DIR;
 834         MAKE_DIR_IF_NOT_EXIST(f);
 835
 836         return 0;
 837 }
 838
 839 #undef MAKE_DIR_IF_NOT_EXIST
 840
 841 static gchar *mh_item_get_path(Folder *folder, FolderItem *item)
 842 {
 843         gchar *folder_path, *path;
 844         gchar *real_path;
 845         cm_return_val_if_fail(folder != NULL, NULL);
 846         cm_return_val_if_fail(item != NULL, NULL);
 847
 848         folder_path = g_strdup(LOCAL_FOLDER(folder)->rootpath);
 849         cm_return_val_if_fail(folder_path != NULL, NULL);
 850
 851         /* FIXME: [W32] The code below does not correctly merge
 852            relative filenames; there should be a function to handle
 853            this.  */
 854         if ( !is_relative_filename (folder_path) ) {
 855                 if (item->path)
 856                         path = g_strconcat(folder_path, G_DIR_SEPARATOR_S,
 857                                            item->path, NULL);
 858                 else
 859                         path = g_strdup(folder_path);
 860         } else {
 861                 if (item->path)
 862                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 863                                            folder_path, G_DIR_SEPARATOR_S,
 864                                            item->path, NULL);
 865                 else
 866                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 867                                            folder_path, NULL);
 868         }
 869         g_free(folder_path);
 870         real_path = mh_filename_from_utf8(path);
 871         if (!is_dir_exist(real_path) && is_dir_exist(path)) {
 872                 /* mmh, older version did put utf8 filenames instead of
 873                  * the correct encoding */
 874                 if (g_rename(path, real_path) == 0)
 875                         folder_item_scan(item);
 876         }
 877
 878         g_free(path);
 879         return real_path;
 880 }
 881
 882 static gboolean mh_renumber_msg(MsgInfo *info)
 883 {
 884         gchar *src, *dest;
 885         gboolean result = FALSE;
 886         guint num;
 887         cm_return_val_if_fail(info != NULL, FALSE);
 888
 889         src = folder_item_fetch_msg(info->folder, info->msgnum);
 890         dest = mh_get_new_msg_filename(info->folder);
 891         num = info->folder->last_num + 1;
 892
 893         if (move_file(src, dest, FALSE) == 0) {
 894                 msgcache_remove_msg(info->folder->cache, info->msgnum);
 895                 info->msgnum = num;
 896                 msgcache_add_msg(info->folder->cache, info);
 897                 result = TRUE;
 898         }
 899
 900         g_free(src);
 901         g_free(dest);
 902
 903         return result;
 904 }
 905
 906 static FolderItem *mh_create_folder(Folder *folder, FolderItem *parent,
 907                                     const gchar *name)
 908 {
 909         gchar *path, *real_name;
 910         gchar *fullpath;
 911         FolderItem *new_item;
 912         gchar *mh_sequences_filename;
 913         FILE *mh_sequences_file;
 914
 915         cm_return_val_if_fail(folder != NULL, NULL);
 916         cm_return_val_if_fail(parent != NULL, NULL);
 917         cm_return_val_if_fail(name != NULL, NULL);
 918
 919         path = folder_item_get_path(parent);
 920         if (!is_dir_exist(path))
 921                 if (make_dir_hier(path) != 0)
 922                         return NULL;
 923
 924         real_name = mh_filename_from_utf8(name);
 925         fullpath = g_strconcat(path, G_DIR_SEPARATOR_S, real_name, NULL);
 926         g_free(real_name);
 927         g_free(path);
 928
 929         if (to_number(name) > 0) {
 930                 MsgInfo *info = folder_item_get_msginfo(parent, to_number(name));
 931                 if (info != NULL) {
 932                         gboolean ok = mh_renumber_msg(info);
 933                         procmsg_msginfo_free(info);
 934                         if (!ok) {
 935                                 g_free(fullpath);
 936                                 return NULL;
 937                         }
 938                 }
 939         }
 940
 941         if (make_dir(fullpath) < 0) {
 942                 g_free(fullpath);
 943                 return NULL;
 944         }
 945
 946         g_free(fullpath);
 947
 948         if (parent->path)
 949                 path = g_strconcat(parent->path, G_DIR_SEPARATOR_S, name,
 950                                    NULL);
 951         else
 952                 path = g_strdup(name);
 953         new_item = folder_item_new(folder, name, path);
 954         folder_item_append(parent, new_item);
 955
 956         g_free(path);
 957
 958         path = folder_item_get_path(new_item);
 959         mh_sequences_filename = g_strconcat(path, G_DIR_SEPARATOR_S,
 960                                             ".mh_sequences", NULL);
 961         if ((mh_sequences_file = g_fopen(mh_sequences_filename, "a+b")) != NULL) {
 962                 fclose(mh_sequences_file);
 963         }
 964         g_free(mh_sequences_filename);
 965         g_free(path);
 966
 967         return new_item;
 968 }
 969
 970 static gint mh_rename_folder(Folder *folder, FolderItem *item,
 971                              const gchar *name)
 972 {
 973         gchar *real_name;
 974         gchar *oldpath;
 975         gchar *dirname;
 976         gchar *newpath, *utf8newpath;
 977         gchar *paths[2];
 978
 979         cm_return_val_if_fail(folder != NULL, -1);
 980         cm_return_val_if_fail(item != NULL, -1);
 981         cm_return_val_if_fail(item->path != NULL, -1);
 982         cm_return_val_if_fail(name != NULL, -1);
 983
 984         oldpath = folder_item_get_path(item);
 985         if (!is_dir_exist(oldpath))
 986                 make_dir_hier(oldpath);
 987
 988         dirname = g_path_get_dirname(oldpath);
 989         real_name = mh_filename_from_utf8(name);
 990         newpath = g_strconcat(dirname, G_DIR_SEPARATOR_S, real_name, NULL);
 991         g_free(real_name);
 992
 993         if (g_rename(oldpath, newpath) < 0) {
 994                 FILE_OP_ERROR(oldpath, "rename");
 995                 g_free(oldpath);
 996                 g_free(newpath);
 997                 return -1;
 998         }
 999
1000         g_free(oldpath);
1001         g_free(newpath);
1002
1003         if (strchr(item->path, G_DIR_SEPARATOR) != NULL) {
1004                 dirname = g_path_get_dirname(item->path);
1005                 utf8newpath = g_strconcat(dirname, G_DIR_SEPARATOR_S,
1006                                           name, NULL);
1007                 g_free(dirname);
1008         } else
1009                 utf8newpath = g_strdup(name);
1010
1011         g_free(item->name);
1012         item->name = g_strdup(name);
1013
1014         paths[0] = g_strdup(item->path);
1015         paths[1] = utf8newpath;
1016         g_node_traverse(item->node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
1017                         mh_rename_folder_func, paths);
1018
1019         g_free(paths[0]);
1020         g_free(paths[1]);
1021         return 0;
1022 }
1023
1024 static gint mh_remove_folder(Folder *folder, FolderItem *item)
1025 {
1026         gchar *path;
1027         gint ret;
1028
1029         cm_return_val_if_fail(folder != NULL, -1);
1030         cm_return_val_if_fail(item != NULL, -1);
1031         cm_return_val_if_fail(item->path != NULL, -1);
1032
1033         path = folder_item_get_path(item);
1034         if ((ret = remove_dir_recursive(path)) < 0) {
1035                 g_warning("can't remove directory '%s'", path);
1036                 g_free(path);
1037                 return ret;
1038         }
1039
1040         g_free(path);
1041         folder_item_remove(item);
1042         return 0;
1043 }
1044
1045 static MsgInfo *mh_parse_msg(const gchar *file, FolderItem *item)
1046 {
1047         MsgInfo *msginfo;
1048         MsgFlags flags;
1049
1050         cm_return_val_if_fail(item != NULL, NULL);
1051         cm_return_val_if_fail(file != NULL, NULL);
1052
1053         flags.perm_flags = MSG_NEW|MSG_UNREAD;
1054         flags.tmp_flags = 0;
1055
1056         if (folder_has_parent_of_type(item, F_QUEUE)) {
1057                 MSG_SET_TMP_FLAGS(flags, MSG_QUEUED);
1058         } else if (folder_has_parent_of_type(item, F_DRAFT)) {
1059                 MSG_SET_TMP_FLAGS(flags, MSG_DRAFT);
1060         }
1061
1062         msginfo = procheader_parse_file(file, flags, FALSE, FALSE);
1063         if (!msginfo) return NULL;
1064
1065         msginfo->msgnum = atoi(file);
1066         msginfo->folder = item;
1067
1068         return msginfo;
1069 }
1070
1071 static gboolean mh_remove_missing_folder_items_func(GNode *node, gpointer data)
1072 {
1073         FolderItem *item;
1074         gchar *path;
1075
1076         cm_return_val_if_fail(node->data != NULL, FALSE);
1077
1078         if (G_NODE_IS_ROOT(node))
1079                 return FALSE;
1080
1081         item = FOLDER_ITEM(node->data);
1082
1083         path = folder_item_get_path(item);
1084         if (!is_dir_exist(path)) {
1085                 debug_print("folder '%s' not found. removing...\n", path?path:"(null)");
1086                 folder_item_remove(item);
1087         }
1088         g_free(path);
1089
1090         return FALSE;
1091 }
1092
1093 static void mh_remove_missing_folder_items(Folder *folder)
1094 {
1095         cm_return_if_fail(folder != NULL);
1096
1097         debug_print("searching missing folders...\n");
1098
1099         g_node_traverse(folder->node, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1100                         mh_remove_missing_folder_items_func, folder);
1101 }
1102
1103 static void mh_scan_tree_recursive(FolderItem *item)
1104 {
1105         Folder *folder;
1106         GDir *dir;
1107         const gchar *dir_name;
1108         gchar *real_path, *entry, *utf8entry, *utf8name;
1109         gint n_msg = 0;
1110         GError *error = NULL;
1111
1112         cm_return_if_fail(item != NULL);
1113         cm_return_if_fail(item->folder != NULL);
1114
1115         folder = item->folder;
1116
1117         real_path = item->path ? mh_filename_from_utf8(item->path) : g_strdup(".");
1118         dir = g_dir_open(real_path, 0, &error);
1119         if (!dir) {
1120                 g_warning("failed to open directory '%s': %s (%d)",
1121                                 real_path, error->message, error->code);
1122                 g_error_free(error);
1123                 g_free(real_path);
1124                 return;
1125         }
1126         g_free(real_path);
1127
1128         debug_print("scanning %s ...\n",
1129                     item->path ? item->path
1130                     : LOCAL_FOLDER(item->folder)->rootpath);
1131         if (folder->ui_func)
1132                 folder->ui_func(folder, item, folder->ui_func_data);
1133
1134         while ((dir_name = g_dir_read_name(dir)) != NULL) {
1135                 if (dir_name[0] == '.') continue;
1136
1137                 utf8name = mh_filename_to_utf8(dir_name);
1138                 if (item->path)
1139                         utf8entry = g_strconcat(item->path, G_DIR_SEPARATOR_S,
1140                                                 utf8name, NULL);
1141                 else
1142                         utf8entry = g_strdup(utf8name);
1143                 entry = mh_filename_from_utf8(utf8entry);
1144
1145                 if (g_file_test(entry, G_FILE_TEST_IS_DIR)) {
1146                         FolderItem *new_item = NULL;
1147                         GNode *node;
1148
1149                         node = item->node;
1150                         for (node = node->children; node != NULL; node = node->next) {
1151                                 FolderItem *cur_item = FOLDER_ITEM(node->data);
1152                                 gchar *curpath = mh_filename_from_utf8(cur_item->path);
1153                                 if (!strcmp2(curpath, entry)) {
1154                                         new_item = cur_item;
1155                                         g_free(curpath);
1156                                         break;
1157                                 }
1158                                 g_free(curpath);
1159                         }
1160                         if (!new_item) {
1161                                 debug_print("new folder '%s' found.\n", entry);
1162                                 new_item = folder_item_new(folder, utf8name, utf8entry);
1163                                 folder_item_append(item, new_item);
1164                         }
1165
1166                         if (!item->path) {
1167                                 if (!folder->inbox &&
1168                                     !strcmp(dir_name, INBOX_DIR)) {
1169                                         new_item->stype = F_INBOX;
1170                                         folder->inbox = new_item;
1171                                 } else if (!folder->outbox &&
1172                                            !strcmp(dir_name, OUTBOX_DIR)) {
1173                                         new_item->stype = F_OUTBOX;
1174                                         folder->outbox = new_item;
1175                                 } else if (!folder->draft &&
1176                                            !strcmp(dir_name, DRAFT_DIR)) {
1177                                         new_item->stype = F_DRAFT;
1178                                         folder->draft = new_item;
1179                                 } else if (!folder->queue &&
1180                                            !strcmp(dir_name, QUEUE_DIR)) {
1181                                         new_item->stype = F_QUEUE;
1182                                         folder->queue = new_item;
1183                                 } else if (!folder->trash &&
1184                                            !strcmp(dir_name, TRASH_DIR)) {
1185                                         new_item->stype = F_TRASH;
1186                                         folder->trash = new_item;
1187                                 }
1188                         }
1189
1190                         mh_scan_tree_recursive(new_item);
1191                 } else if (to_number(dir_name) > 0) n_msg++;
1192
1193                 g_free(entry);
1194                 g_free(utf8entry);
1195                 g_free(utf8name);
1196         }
1197
1198         g_dir_close(dir);
1199
1200         mh_set_mtime(folder, item);
1201 }
1202
1203 static gboolean mh_rename_folder_func(GNode *node, gpointer data)
1204 {
1205         FolderItem *item = node->data;
1206         gchar **paths = data;
1207         const gchar *oldpath = paths[0];
1208         const gchar *newpath = paths[1];
1209         gchar *base;
1210         gchar *new_itempath;
1211         gint oldpathlen;
1212
1213         oldpathlen = strlen(oldpath);
1214         if (strncmp(oldpath, item->path, oldpathlen) != 0) {
1215                 g_warning("path doesn't match: %s, %s", oldpath, item->path);
1216                 return TRUE;
1217         }
1218
1219         base = item->path + oldpathlen;
1220         while (*base == G_DIR_SEPARATOR) base++;
1221         if (*base == '\0')
1222                 new_itempath = g_strdup(newpath);
1223         else
1224                 new_itempath = g_strconcat(newpath, G_DIR_SEPARATOR_S, base,
1225                                            NULL);
1226         g_free(item->path);
1227         item->path = new_itempath;
1228
1229         return FALSE;
1230 }
1231
1232 static gchar *mh_filename_from_utf8(const gchar *path)
1233 {
1234         gchar *real_path = g_filename_from_utf8(path, -1, NULL, NULL, NULL);
1235
1236         if (!real_path) {
1237                 g_warning("mh_filename_from_utf8: failed to convert character set");
1238                 real_path = g_strdup(path);
1239         }
1240
1241         return real_path;
1242 }
1243
1244 static gchar *mh_filename_to_utf8(const gchar *path)
1245 {
1246         gchar *utf8path = g_filename_to_utf8(path, -1, NULL, NULL, NULL);
1247         if (!utf8path) {
1248                 g_warning("mh_filename_to_utf8: failed to convert character set");
1249                 utf8path = g_strdup(path);
1250         }
1251
1252         return utf8path;
1253 }
1254
1255 static gint sort_cache_list_by_msgnum(gconstpointer a, gconstpointer b)
1256 {
1257         MsgInfo *msginfo_a = (MsgInfo *) a;
1258         MsgInfo *msginfo_b = (MsgInfo *) b;
1259
1260         return (msginfo_a->msgnum - msginfo_b->msgnum);
1261 }
1262
1263 static gchar *get_unseen_seq_name(void)
1264 {
1265         static gchar *seq_name = NULL;
1266         if (!seq_name) {
1267                 gchar buf[BUFFSIZE];
1268                 gchar *tmp;
1269                 gchar *profile_path = g_strconcat(
1270                         get_home_dir(), G_DIR_SEPARATOR_S,
1271                         ".mh_profile", NULL);
1272                 FILE *fp = g_fopen(profile_path, "r");
1273                 if (fp) {
1274                         while (fgets(buf, sizeof(buf), fp) != NULL) {
1275                                 if (!strncmp(buf, "Unseen-Sequence:", strlen("Unseen-Sequence:"))) {
1276                                         gchar *seq_tmp = buf+strlen("Unseen-Sequence:");
1277                                         while (*seq_tmp == ' ')
1278                                                 seq_tmp++;
1279                                         seq_name = g_strdup(seq_tmp);
1280                                         seq_name = strretchomp(seq_name);
1281                                         break;
1282                                 }
1283                         }
1284                         fclose(fp);
1285                 }
1286                 if (!seq_name)
1287                         seq_name = g_strdup("unseen");
1288                 tmp = g_strdup_printf("%s:", seq_name);
1289                 g_free(seq_name);
1290                 seq_name = tmp;
1291         }
1292         return seq_name;
1293 }
1294
1295 static void mh_write_sequences(FolderItem *item, gboolean remove_unseen)
1296 {
1297         gchar *mh_sequences_old, *mh_sequences_new;
1298         FILE *mh_sequences_old_fp, *mh_sequences_new_fp;
1299         gchar buf[BUFFSIZE];
1300         gchar *path = NULL;
1301         gboolean err = FALSE;
1302         START_TIMING("");
1303
1304         if (!item)
1305                 return;
1306
1307         path = folder_item_get_path(item);
1308
1309         mh_sequences_old = g_strconcat(path, G_DIR_SEPARATOR_S,
1310                                             ".mh_sequences", NULL);
1311         mh_sequences_new = g_strconcat(path, G_DIR_SEPARATOR_S,
1312                                             ".mh_sequences.new", NULL);
1313         if ((mh_sequences_new_fp = g_fopen(mh_sequences_new, "w+b")) != NULL) {
1314                 GSList *msglist = folder_item_get_msg_list(item);
1315                 GSList *cur;
1316                 MsgInfo *info = NULL;
1317                 gint start = -1, end = -1;
1318                 gchar *sequence = g_strdup("");
1319                 gint seq_len = 0;
1320                 msglist = g_slist_sort(msglist, sort_cache_list_by_msgnum);
1321                 cur = msglist;
1322
1323                 /* write the unseen sequence if we don't have to scrap it */
1324                 if (!remove_unseen) do {
1325                         info = (MsgInfo *)(cur ? cur->data:NULL);
1326                         if (info && (MSG_IS_UNREAD(info->flags) || MSG_IS_NEW(info->flags))) {
1327                                 if (start < 0)
1328                                         start = end = info->msgnum;
1329                                 else
1330                                         end = info->msgnum;
1331                         } else {
1332                                 if (start > 0 && end > 0) {
1333                                         gchar tmp[32];
1334                                         gint tmp_len = 0;
1335                                         if (start != end)
1336                                                 snprintf(tmp, 31, " %d-%d", start, end);
1337                                         else
1338                                                 snprintf(tmp, 31, " %d", start);
1339
1340                                         tmp_len = strlen(tmp);
1341                                         sequence = g_realloc(sequence, seq_len+tmp_len+1);
1342                                         strcpy(sequence+seq_len, tmp);
1343                                         seq_len += tmp_len;
1344
1345                                         start = end = -1;
1346                                 }
1347                         }
1348                         cur = cur ? cur->next:NULL;
1349                 } while (cur || (start > 0 && end > 0));
1350                 if (sequence && *sequence) {
1351                         if (fprintf(mh_sequences_new_fp, "%s%s\n",
1352                                         get_unseen_seq_name(), sequence) < 0)
1353                                 err = TRUE;
1354                         else
1355                                 debug_print("wrote unseen sequence: '%s%s'\n",
1356                                         get_unseen_seq_name(), sequence);
1357                 }
1358                 /* rewrite the rest of the file */
1359                 if ((mh_sequences_old_fp = g_fopen(mh_sequences_old, "r+b")) != NULL) {
1360                         while (fgets(buf, sizeof(buf), mh_sequences_old_fp) != NULL) {
1361                                 if (strncmp(buf, get_unseen_seq_name(), strlen(get_unseen_seq_name())))
1362                                         if (fprintf(mh_sequences_new_fp, "%s", buf) < 0) {
1363                                                 err = TRUE;
1364                                                 break;
1365                                         }
1366                         }
1367                         fclose(mh_sequences_old_fp);
1368                 }
1369
1370                 fflush(mh_sequences_new_fp);
1371 #if 0
1372                 fsync(fileno(mh_sequences_new_fp));
1373 #endif
1374                 if (fclose(mh_sequences_new_fp) == EOF)
1375                         err = TRUE;
1376
1377                 if (!err) {
1378                         if (g_rename(mh_sequences_new, mh_sequences_old) < 0)
1379                                 FILE_OP_ERROR(mh_sequences_new, "rename");
1380                 }
1381                 g_free(sequence);
1382                 procmsg_msg_list_free(msglist);
1383         }
1384         g_free(mh_sequences_old);
1385         g_free(mh_sequences_new);
1386         g_free(path);
1387
1388         END_TIMING();
1389 }
1390
1391 static int mh_item_close(Folder *folder, FolderItem *item)
1392 {
1393         time_t last_mtime = (time_t)0;
1394         gboolean need_scan = mh_scan_required(item->folder, item);
1395         last_mtime = item->mtime;
1396
1397         mh_write_sequences(item, FALSE);
1398
1399         if (item->mtime == last_mtime && !need_scan) {
1400                 mh_set_mtime(folder, item);
1401         }
1402
1403         return 0;
1404 }
1405
1406 static void mh_set_mtime(Folder *folder, FolderItem *item)
1407 {
1408         GStatBuf s;
1409         gchar *path = folder_item_get_path(item);
1410
1411         cm_return_if_fail(path != NULL);
1412
1413         if (g_stat(path, &s) < 0) {
1414                 FILE_OP_ERROR(path, "stat");
1415                 g_free(path);
1416                 return;
1417         }
1418
1419         item->mtime = s.st_mtime;
1420         debug_print("MH: forced mtime of %s to %ld\n", item->name?item->name:"(null)", item->mtime);
1421         g_free(path);
1422 }