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         DIR *dp;
 248         struct dirent *d;
 249         gint max = 0;
 250         gint num;
 251
 252         cm_return_if_fail(item != NULL);
 253
 254         debug_print("mh_get_last_num(): Scanning %s ...\n", item->path?item->path:"(null)");
 255
 256         path = folder_item_get_path(item);
 257         cm_return_if_fail(path != NULL);
 258         if (change_dir(path) < 0) {
 259                 g_free(path);
 260                 return;
 261         }
 262         g_free(path);
 263
 264         if ((dp = opendir(".")) == NULL) {
 265                 FILE_OP_ERROR(item->path, "opendir");
 266                 return;
 267         }
 268
 269         while ((d = readdir(dp)) != NULL) {
 270                 if ((num = to_number(d->d_name)) > 0 &&
 271                     dirent_is_regular_file(d)) {
 272                         if (max < num)
 273                                 max = num;
 274                 }
 275                 if (num % 2000 == 0)
 276                         GTK_EVENTS_FLUSH();
 277         }
 278         closedir(dp);
 279
 280         debug_print("Last number in dir %s = %d\n", item->path?item->path:"(null)", max);
 281         item->last_num = max;
 282 }
 283
 284 gint mh_get_num_list(Folder *folder, FolderItem *item, GSList **list, gboolean *old_uids_valid)
 285 {
 286
 287         gchar *path;
 288         DIR *dp;
 289         struct dirent *d;
 290         gint num, nummsgs = 0;
 291
 292         cm_return_val_if_fail(item != NULL, -1);
 293
 294         debug_print("mh_get_num_list(): Scanning %s ...\n", item->path?item->path:"(null)");
 295
 296         *old_uids_valid = TRUE;
 297
 298         path = folder_item_get_path(item);
 299         cm_return_val_if_fail(path != NULL, -1);
 300         if (change_dir(path) < 0) {
 301                 g_free(path);
 302                 return -1;
 303         }
 304         g_free(path);
 305
 306         if ((dp = opendir(".")) == NULL) {
 307                 FILE_OP_ERROR(item->path, "opendir");
 308                 return -1;
 309         }
 310
 311         while ((d = readdir(dp)) != NULL) {
 312                 if ((num = to_number(d->d_name)) > 0) {
 313                         *list = g_slist_prepend(*list, GINT_TO_POINTER(num));
 314                         nummsgs++;
 315                 }
 316         }
 317         closedir(dp);
 318
 319         mh_set_mtime(folder, item);
 320         return nummsgs;
 321 }
 322
 323 static gchar *mh_fetch_msg(Folder *folder, FolderItem *item, gint num)
 324 {
 325         gchar *path;
 326         gchar *file;
 327
 328         cm_return_val_if_fail(item != NULL, NULL);
 329         cm_return_val_if_fail(num > 0, NULL);
 330
 331         path = folder_item_get_path(item);
 332         file = g_strconcat(path, G_DIR_SEPARATOR_S, itos(num), NULL);
 333
 334         if (!is_file_exist(file)) {
 335                 g_free(file);
 336                 g_free(path);
 337                 return NULL;
 338         }
 339         g_free(path);
 340         return file;
 341 }
 342
 343 static MsgInfo *mh_get_msginfo(Folder *folder, FolderItem *item, gint num)
 344 {
 345         MsgInfo *msginfo;
 346         gchar *file;
 347
 348         cm_return_val_if_fail(item != NULL, NULL);
 349         if (num <= 0)
 350                 return NULL;
 351
 352         file = mh_fetch_msg(folder, item, num);
 353         if (!file) return NULL;
 354
 355         msginfo = mh_parse_msg(file, item);
 356         if (msginfo)
 357                 msginfo->msgnum = num;
 358
 359         g_free(file);
 360
 361         return msginfo;
 362 }
 363
 364 static gchar *mh_get_new_msg_filename(FolderItem *dest)
 365 {
 366         gchar *destfile;
 367         gchar *destpath;
 368
 369         destpath = folder_item_get_path(dest);
 370         cm_return_val_if_fail(destpath != NULL, NULL);
 371
 372         if (dest->last_num < 0) {
 373                 mh_get_last_num(dest->folder, dest);
 374                 if (dest->last_num < 0) return NULL;
 375         }
 376
 377         if (!is_dir_exist(destpath))
 378                 make_dir_hier(destpath);
 379
 380         for (;;) {
 381                 destfile = g_strdup_printf("%s%c%d", destpath, G_DIR_SEPARATOR,
 382                                            dest->last_num + 1);
 383                 if (is_file_entry_exist(destfile)) {
 384                         dest->last_num++;
 385                         g_free(destfile);
 386                 } else
 387                         break;
 388         }
 389
 390         g_free(destpath);
 391
 392         return destfile;
 393 }
 394
 395 static gint mh_add_msg(Folder *folder, FolderItem *dest, const gchar *file, MsgFlags *flags)
 396 {
 397         gint ret;
 398         GSList file_list;
 399         MsgFileInfo fileinfo;
 400
 401         cm_return_val_if_fail(file != NULL, -1);
 402
 403         fileinfo.msginfo = NULL;
 404         fileinfo.file = (gchar *)file;
 405         fileinfo.flags = flags;
 406         file_list.data = &fileinfo;
 407         file_list.next = NULL;
 408
 409         ret = mh_add_msgs(folder, dest, &file_list, NULL);
 410         return ret;
 411 }
 412
 413 static gint mh_add_msgs(Folder *folder, FolderItem *dest, GSList *file_list,
 414                  GHashTable *relation)
 415 {
 416         gchar *destfile;
 417         GSList *cur;
 418         MsgFileInfo *fileinfo;
 419
 420         cm_return_val_if_fail(dest != NULL, -1);
 421         cm_return_val_if_fail(file_list != NULL, -1);
 422
 423         if (dest->last_num < 0) {
 424                 mh_get_last_num(folder, dest);
 425                 if (dest->last_num < 0) return -1;
 426         }
 427
 428         for (cur = file_list; cur != NULL; cur = cur->next) {
 429                 fileinfo = (MsgFileInfo *)cur->data;
 430
 431                 destfile = mh_get_new_msg_filename(dest);
 432                 if (destfile == NULL) return -1;
 433
 434 #ifdef G_OS_UNIX
 435                 if (link(fileinfo->file, destfile) < 0) {
 436 #endif
 437                         if (copy_file(fileinfo->file, destfile, TRUE) < 0) {
 438                                 g_warning(_("can't copy message %s to %s\n"),
 439                                           fileinfo->file, destfile);
 440                                 g_free(destfile);
 441                                 return -1;
 442                         }
 443 #ifdef G_OS_UNIX
 444                 }
 445 #endif
 446
 447                 if (relation != NULL)
 448                         g_hash_table_insert(relation, fileinfo, GINT_TO_POINTER(dest->last_num + 1));
 449                 g_free(destfile);
 450                 dest->last_num++;
 451         }
 452         mh_write_sequences(dest, TRUE);
 453         return dest->last_num;
 454 }
 455
 456 static gint mh_copy_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
 457 {
 458         GSList msglist;
 459
 460         cm_return_val_if_fail(msginfo != NULL, -1);
 461
 462         msglist.data = msginfo;
 463         msglist.next = NULL;
 464
 465         return mh_copy_msgs(folder, dest, &msglist, NULL);
 466 }
 467
 468 static gint mh_copy_msgs(Folder *folder, FolderItem *dest, MsgInfoList *msglist,
 469                          GHashTable *relation)
 470 {
 471         gboolean dest_need_scan = FALSE;
 472         gboolean src_need_scan = FALSE;
 473         FolderItem *src = NULL;
 474         gchar *srcfile;
 475         gchar *destfile;
 476         FolderItemPrefs *prefs;
 477         MsgInfo *msginfo = NULL;
 478         MsgInfoList *cur = NULL;
 479         gint curnum = 0, total = 0;
 480         gchar *srcpath = NULL;
 481         gboolean full_fetch = FALSE;
 482         time_t last_dest_mtime = (time_t)0;
 483         time_t last_src_mtime = (time_t)0;
 484
 485         cm_return_val_if_fail(dest != NULL, -1);
 486         cm_return_val_if_fail(msglist != NULL, -1);
 487
 488         msginfo = (MsgInfo *)msglist->data;
 489
 490         cm_return_val_if_fail(msginfo != NULL, -1);
 491
 492         if (msginfo->folder == dest) {
 493                 g_warning("the src folder is identical to the dest.\n");
 494                 return -1;
 495         }
 496
 497         if (msginfo->folder->folder != dest->folder)
 498                 full_fetch = TRUE;
 499
 500         if (FOLDER_TYPE(msginfo->folder->folder) == F_MH) {
 501                 src = msginfo->folder;
 502         }
 503
 504         if (dest->last_num < 0) {
 505                 mh_get_last_num(folder, dest);
 506                 if (dest->last_num < 0) return -1;
 507         }
 508
 509         prefs = dest->prefs;
 510
 511         srcpath = folder_item_get_path(msginfo->folder);
 512
 513         dest_need_scan = mh_scan_required(dest->folder, dest);
 514         last_dest_mtime = dest->mtime;
 515
 516         if (src) {
 517                 src_need_scan = mh_scan_required(src->folder, src);
 518                 last_src_mtime = src->mtime;
 519         }
 520
 521         total = g_slist_length(msglist);
 522         if (total > 100) {
 523                 if (MSG_IS_MOVE(msginfo->flags))
 524                         statusbar_print_all(_("Moving messages..."));
 525                 else
 526                         statusbar_print_all(_("Copying messages..."));
 527         }
 528         for (cur = msglist; cur; cur = cur->next) {
 529                 msginfo = (MsgInfo *)cur->data;
 530                 if (!msginfo) {
 531                         goto err_reset_status;
 532                 }
 533                 if (!full_fetch) {
 534                         srcfile = g_strconcat(srcpath,
 535                                 G_DIR_SEPARATOR_S,
 536                                 itos(msginfo->msgnum), NULL);
 537                 } else {
 538                         srcfile = procmsg_get_message_file(msginfo);
 539                 }
 540                 if (!srcfile) {
 541                         goto err_reset_status;
 542                 }
 543                 destfile = mh_get_new_msg_filename(dest);
 544                 if (!destfile) {
 545                         g_free(srcfile);
 546                         goto err_reset_status;
 547                 }
 548
 549                 if (total > 100) {
 550                         statusbar_progress_all(curnum, total, 100);
 551                         if (curnum % 100 == 0)
 552                                 GTK_EVENTS_FLUSH();
 553                         curnum++;
 554                 }
 555
 556                 debug_print("Copying message %s%c%d to %s ...\n",
 557                             msginfo->folder->path, G_DIR_SEPARATOR,
 558                             msginfo->msgnum, dest->path);
 559
 560
 561                 if (MSG_IS_MOVE(msginfo->flags)) {
 562                         msginfo->flags.tmp_flags &= ~MSG_MOVE_DONE;
 563                         if (move_file(srcfile, destfile, TRUE) < 0) {
 564                                 FILE_OP_ERROR(srcfile, "move");
 565                                 if (copy_file(srcfile, destfile, TRUE) < 0) {
 566                                         FILE_OP_ERROR(srcfile, "copy");
 567                                         g_free(srcfile);
 568                                         g_free(destfile);
 569                                         goto err_reset_status;
 570                                 }
 571                         } else {
 572                                 /* say unlinking's not necessary */
 573                                 msginfo->flags.tmp_flags |= MSG_MOVE_DONE;
 574                         }
 575                 } else if (copy_file(srcfile, destfile, TRUE) < 0) {
 576                         FILE_OP_ERROR(srcfile, "copy");
 577                         g_free(srcfile);
 578                         g_free(destfile);
 579                         goto err_reset_status;
 580                 }
 581                 if (prefs && prefs->enable_folder_chmod && prefs->folder_chmod) {
 582                         if (chmod(destfile, prefs->folder_chmod) < 0)
 583                                 FILE_OP_ERROR(destfile, "chmod");
 584                 }
 585                 if (relation) {
 586                         if (g_hash_table_lookup(relation, msginfo) != NULL)
 587                                 g_warning("already in : %p", msginfo);
 588
 589                         g_hash_table_insert(relation, msginfo, GINT_TO_POINTER(dest->last_num+1));
 590                 }
 591                 g_free(srcfile);
 592                 g_free(destfile);
 593                 dest->last_num++;
 594         }
 595
 596         g_free(srcpath);
 597         mh_write_sequences(dest, TRUE);
 598
 599         if (dest->mtime == last_dest_mtime && !dest_need_scan) {
 600                 mh_set_mtime(folder, dest);
 601         }
 602
 603         if (src && src->mtime == last_src_mtime && !src_need_scan) {
 604                 mh_set_mtime(folder, src);
 605         }
 606
 607         if (total > 100) {
 608                 statusbar_progress_all(0,0,0);
 609                 statusbar_pop_all();
 610         }
 611         return dest->last_num;
 612 err_reset_status:
 613         g_free(srcpath);
 614         mh_write_sequences(dest, TRUE);
 615         if (total > 100) {
 616                 statusbar_progress_all(0,0,0);
 617                 statusbar_pop_all();
 618         }
 619         return -1;
 620
 621 }
 622
 623 static gint mh_remove_msg(Folder *folder, FolderItem *item, gint num)
 624 {
 625         gboolean need_scan = FALSE;
 626         time_t last_mtime = (time_t)0;
 627         gchar *file;
 628
 629         cm_return_val_if_fail(item != NULL, -1);
 630
 631         file = mh_fetch_msg(folder, item, num);
 632         cm_return_val_if_fail(file != NULL, -1);
 633
 634         need_scan = mh_scan_required(folder, item);
 635         last_mtime = item->mtime;
 636
 637         if (claws_unlink(file) < 0) {
 638                 FILE_OP_ERROR(file, "unlink");
 639                 g_free(file);
 640                 return -1;
 641         }
 642
 643         if (item->mtime == last_mtime && !need_scan) {
 644                 mh_set_mtime(folder, item);
 645         }
 646         g_free(file);
 647         return 0;
 648 }
 649
 650 static gint mh_remove_msgs(Folder *folder, FolderItem *item,
 651                     MsgInfoList *msglist, GHashTable *relation)
 652 {
 653         gboolean need_scan = FALSE;
 654         gchar *path, *file;
 655         time_t last_mtime = (time_t)0;
 656         MsgInfoList *cur;
 657         gint total = 0, curnum = 0;
 658
 659         cm_return_val_if_fail(item != NULL, -1);
 660
 661         path = folder_item_get_path(item);
 662
 663         need_scan = mh_scan_required(folder, item);
 664         last_mtime = item->mtime;
 665
 666         total = g_slist_length(msglist);
 667         if (total > 100) {
 668                 statusbar_print_all(_("Deleting messages..."));
 669         }
 670
 671         for (cur = msglist; cur; cur = cur->next) {
 672                 MsgInfo *msginfo = (MsgInfo *)cur->data;
 673                 if (msginfo == NULL)
 674                         continue;
 675                 if (MSG_IS_MOVE(msginfo->flags) && MSG_IS_MOVE_DONE(msginfo->flags)) {
 676                         msginfo->flags.tmp_flags &= ~MSG_MOVE_DONE;
 677                         continue;
 678                 }
 679                 if (total > 100) {
 680                         statusbar_progress_all(curnum, total, 100);
 681                         if (curnum % 100 == 0)
 682                                 GTK_EVENTS_FLUSH();
 683                         curnum++;
 684                 }
 685
 686                 file = g_strconcat(path, G_DIR_SEPARATOR_S, itos(msginfo->msgnum), NULL);
 687                 if (file == NULL)
 688                         continue;
 689
 690                 if (claws_unlink(file) < 0) {
 691                         g_free(file);
 692                         continue;
 693                 }
 694
 695                 g_free(file);
 696         }
 697
 698         if (total > 100) {
 699                 statusbar_progress_all(0,0,0);
 700                 statusbar_pop_all();
 701         }
 702         if (item->mtime == last_mtime && !need_scan) {
 703                 mh_set_mtime(folder, item);
 704         }
 705
 706         g_free(path);
 707         return 0;
 708 }
 709
 710 static gint mh_remove_all_msg(Folder *folder, FolderItem *item)
 711 {
 712         gchar *path;
 713         gint val;
 714
 715         cm_return_val_if_fail(item != NULL, -1);
 716
 717         path = folder_item_get_path(item);
 718         cm_return_val_if_fail(path != NULL, -1);
 719         val = remove_all_numbered_files(path);
 720         g_free(path);
 721
 722         mh_write_sequences(item, TRUE);
 723
 724         return val;
 725 }
 726
 727 static gboolean mh_is_msg_changed(Folder *folder, FolderItem *item,
 728                                   MsgInfo *msginfo)
 729 {
 730         GStatBuf s;
 731
 732         if (g_stat(itos(msginfo->msgnum), &s) < 0 ||
 733             msginfo->size  != s.st_size || (
 734                 (msginfo->mtime - s.st_mtime != 0) &&
 735                 (msginfo->mtime - s.st_mtime != 3600) &&
 736                 (msginfo->mtime - s.st_mtime != -3600)))
 737                 return TRUE;
 738
 739         return FALSE;
 740 }
 741
 742 static gint mh_scan_tree(Folder *folder)
 743 {
 744         FolderItem *item;
 745         gchar *rootpath;
 746
 747         cm_return_val_if_fail(folder != NULL, -1);
 748
 749         if (!folder->node) {
 750                 item = folder_item_new(folder, folder->name, NULL);
 751                 item->folder = folder;
 752                 folder->node = item->node = g_node_new(item);
 753         } else
 754                 item = FOLDER_ITEM(folder->node->data);
 755
 756         rootpath = folder_item_get_path(item);
 757         if (change_dir(rootpath) < 0) {
 758                 g_free(rootpath);
 759                 return -1;
 760         }
 761         g_free(rootpath);
 762
 763         mh_create_tree(folder);
 764         mh_remove_missing_folder_items(folder);
 765         mh_scan_tree_recursive(item);
 766
 767         return 0;
 768 }
 769
 770 #define MAKE_DIR_IF_NOT_EXIST(dir) \
 771 { \
 772         if (!is_dir_exist(dir)) { \
 773                 if (is_file_exist(dir)) { \
 774                         g_warning("File `%s' already exists.\n" \
 775                                     "Can't create folder.", dir); \
 776                         return -1; \
 777                 } \
 778                 if (make_dir_hier(dir) < 0) \
 779                         return -1; \
 780         } \
 781 }
 782
 783 static gint mh_create_tree(Folder *folder)
 784 {
 785         gchar *rootpath, *f;
 786
 787         cm_return_val_if_fail(folder != NULL, -1);
 788
 789         CHDIR_RETURN_VAL_IF_FAIL(get_mail_base_dir(), -1);
 790         rootpath = LOCAL_FOLDER(folder)->rootpath;
 791         MAKE_DIR_IF_NOT_EXIST(rootpath);
 792         CHDIR_RETURN_VAL_IF_FAIL(rootpath, -1);
 793
 794         /* Create special directories as needed */
 795         if (folder->inbox != NULL &&
 796                         folder->inbox->path != NULL)
 797                 f = folder->inbox->path;
 798         else
 799                 f = INBOX_DIR;
 800         MAKE_DIR_IF_NOT_EXIST(f);
 801
 802         if (folder->outbox != NULL &&
 803                         folder->outbox->path != NULL)
 804                 f = folder->outbox->path;
 805         else
 806                 f = OUTBOX_DIR;
 807         MAKE_DIR_IF_NOT_EXIST(f);
 808
 809         if (folder->draft != NULL &&
 810                         folder->draft->path != NULL)
 811                 f = folder->draft->path;
 812         else
 813                 f = DRAFT_DIR;
 814         MAKE_DIR_IF_NOT_EXIST(f);
 815
 816         if (folder->queue != NULL &&
 817                         folder->queue->path != NULL)
 818                 f = folder->queue->path;
 819         else
 820                 f = QUEUE_DIR;
 821         MAKE_DIR_IF_NOT_EXIST(f);
 822
 823         if (folder->trash != NULL &&
 824                         folder->trash->path != NULL)
 825                 f = folder->trash->path;
 826         else
 827                 f = TRASH_DIR;
 828         MAKE_DIR_IF_NOT_EXIST(f);
 829
 830         return 0;
 831 }
 832
 833 #undef MAKE_DIR_IF_NOT_EXIST
 834
 835 static gchar *mh_item_get_path(Folder *folder, FolderItem *item)
 836 {
 837         gchar *folder_path, *path;
 838         gchar *real_path;
 839         cm_return_val_if_fail(folder != NULL, NULL);
 840         cm_return_val_if_fail(item != NULL, NULL);
 841
 842         folder_path = g_strdup(LOCAL_FOLDER(folder)->rootpath);
 843         cm_return_val_if_fail(folder_path != NULL, NULL);
 844
 845         /* FIXME: [W32] The code below does not correctly merge
 846            relative filenames; there should be a function to handle
 847            this.  */
 848         if ( !is_relative_filename (folder_path) ) {
 849                 if (item->path)
 850                         path = g_strconcat(folder_path, G_DIR_SEPARATOR_S,
 851                                            item->path, NULL);
 852                 else
 853                         path = g_strdup(folder_path);
 854         } else {
 855                 if (item->path)
 856                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 857                                            folder_path, G_DIR_SEPARATOR_S,
 858                                            item->path, NULL);
 859                 else
 860                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 861                                            folder_path, NULL);
 862         }
 863         g_free(folder_path);
 864         real_path = mh_filename_from_utf8(path);
 865         if (!is_dir_exist(real_path) && is_dir_exist(path)) {
 866                 /* mmh, older version did put utf8 filenames instead of
 867                  * the correct encoding */
 868                 if (g_rename(path, real_path) == 0)
 869                         folder_item_scan(item);
 870         }
 871
 872         g_free(path);
 873         return real_path;
 874 }
 875
 876 static gboolean mh_renumber_msg(MsgInfo *info)
 877 {
 878         gchar *src, *dest;
 879         gboolean result = FALSE;
 880         guint num;
 881         cm_return_val_if_fail(info != NULL, FALSE);
 882
 883         src = folder_item_fetch_msg(info->folder, info->msgnum);
 884         dest = mh_get_new_msg_filename(info->folder);
 885         num = info->folder->last_num + 1;
 886
 887         if (move_file(src, dest, FALSE) == 0) {
 888                 msgcache_remove_msg(info->folder->cache, info->msgnum);
 889                 info->msgnum = num;
 890                 msgcache_add_msg(info->folder->cache, info);
 891                 result = TRUE;
 892         }
 893
 894         g_free(src);
 895         g_free(dest);
 896
 897         return result;
 898 }
 899
 900 static FolderItem *mh_create_folder(Folder *folder, FolderItem *parent,
 901                                     const gchar *name)
 902 {
 903         gchar *path, *real_name;
 904         gchar *fullpath;
 905         FolderItem *new_item;
 906         gchar *mh_sequences_filename;
 907         FILE *mh_sequences_file;
 908
 909         cm_return_val_if_fail(folder != NULL, NULL);
 910         cm_return_val_if_fail(parent != NULL, NULL);
 911         cm_return_val_if_fail(name != NULL, NULL);
 912
 913         path = folder_item_get_path(parent);
 914         if (!is_dir_exist(path))
 915                 if (make_dir_hier(path) != 0)
 916                         return NULL;
 917
 918         real_name = mh_filename_from_utf8(name);
 919         fullpath = g_strconcat(path, G_DIR_SEPARATOR_S, real_name, NULL);
 920         g_free(real_name);
 921         g_free(path);
 922
 923         if (to_number(name) > 0) {
 924                 MsgInfo *info = folder_item_get_msginfo(parent, to_number(name));
 925                 if (info != NULL) {
 926                         gboolean ok = mh_renumber_msg(info);
 927                         procmsg_msginfo_free(info);
 928                         if (!ok) {
 929                                 g_free(fullpath);
 930                                 return NULL;
 931                         }
 932                 }
 933         }
 934
 935         if (make_dir(fullpath) < 0) {
 936                 g_free(fullpath);
 937                 return NULL;
 938         }
 939
 940         g_free(fullpath);
 941
 942         if (parent->path)
 943                 path = g_strconcat(parent->path, G_DIR_SEPARATOR_S, name,
 944                                    NULL);
 945         else
 946                 path = g_strdup(name);
 947         new_item = folder_item_new(folder, name, path);
 948         folder_item_append(parent, new_item);
 949
 950         g_free(path);
 951
 952         path = folder_item_get_path(new_item);
 953         mh_sequences_filename = g_strconcat(path, G_DIR_SEPARATOR_S,
 954                                             ".mh_sequences", NULL);
 955         if ((mh_sequences_file = g_fopen(mh_sequences_filename, "a+b")) != NULL) {
 956                 fclose(mh_sequences_file);
 957         }
 958         g_free(mh_sequences_filename);
 959         g_free(path);
 960
 961         return new_item;
 962 }
 963
 964 static gint mh_rename_folder(Folder *folder, FolderItem *item,
 965                              const gchar *name)
 966 {
 967         gchar *real_name;
 968         gchar *oldpath;
 969         gchar *dirname;
 970         gchar *newpath, *utf8newpath;
 971         gchar *paths[2];
 972
 973         cm_return_val_if_fail(folder != NULL, -1);
 974         cm_return_val_if_fail(item != NULL, -1);
 975         cm_return_val_if_fail(item->path != NULL, -1);
 976         cm_return_val_if_fail(name != NULL, -1);
 977
 978         oldpath = folder_item_get_path(item);
 979         if (!is_dir_exist(oldpath))
 980                 make_dir_hier(oldpath);
 981
 982         dirname = g_path_get_dirname(oldpath);
 983         real_name = mh_filename_from_utf8(name);
 984         newpath = g_strconcat(dirname, G_DIR_SEPARATOR_S, real_name, NULL);
 985         g_free(real_name);
 986
 987         if (g_rename(oldpath, newpath) < 0) {
 988                 FILE_OP_ERROR(oldpath, "rename");
 989                 g_free(oldpath);
 990                 g_free(newpath);
 991                 return -1;
 992         }
 993
 994         g_free(oldpath);
 995         g_free(newpath);
 996
 997         if (strchr(item->path, G_DIR_SEPARATOR) != NULL) {
 998                 dirname = g_path_get_dirname(item->path);
 999                 utf8newpath = g_strconcat(dirname, G_DIR_SEPARATOR_S,
1000                                           name, NULL);
1001                 g_free(dirname);
1002         } else
1003                 utf8newpath = g_strdup(name);
1004
1005         g_free(item->name);
1006         item->name = g_strdup(name);
1007
1008         paths[0] = g_strdup(item->path);
1009         paths[1] = utf8newpath;
1010         g_node_traverse(item->node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
1011                         mh_rename_folder_func, paths);
1012
1013         g_free(paths[0]);
1014         g_free(paths[1]);
1015         return 0;
1016 }
1017
1018 static gint mh_remove_folder(Folder *folder, FolderItem *item)
1019 {
1020         gchar *path;
1021         gint ret;
1022
1023         cm_return_val_if_fail(folder != NULL, -1);
1024         cm_return_val_if_fail(item != NULL, -1);
1025         cm_return_val_if_fail(item->path != NULL, -1);
1026
1027         path = folder_item_get_path(item);
1028         if ((ret = remove_dir_recursive(path)) < 0) {
1029                 g_warning("can't remove directory `%s'\n", path);
1030                 g_free(path);
1031                 return ret;
1032         }
1033
1034         g_free(path);
1035         folder_item_remove(item);
1036         return 0;
1037 }
1038
1039 static MsgInfo *mh_parse_msg(const gchar *file, FolderItem *item)
1040 {
1041         MsgInfo *msginfo;
1042         MsgFlags flags;
1043
1044         cm_return_val_if_fail(item != NULL, NULL);
1045         cm_return_val_if_fail(file != NULL, NULL);
1046
1047         flags.perm_flags = MSG_NEW|MSG_UNREAD;
1048         flags.tmp_flags = 0;
1049
1050         if (folder_has_parent_of_type(item, F_QUEUE)) {
1051                 MSG_SET_TMP_FLAGS(flags, MSG_QUEUED);
1052         } else if (folder_has_parent_of_type(item, F_DRAFT)) {
1053                 MSG_SET_TMP_FLAGS(flags, MSG_DRAFT);
1054         }
1055
1056         msginfo = procheader_parse_file(file, flags, FALSE, FALSE);
1057         if (!msginfo) return NULL;
1058
1059         msginfo->msgnum = atoi(file);
1060         msginfo->folder = item;
1061
1062         return msginfo;
1063 }
1064
1065 static gboolean mh_remove_missing_folder_items_func(GNode *node, gpointer data)
1066 {
1067         FolderItem *item;
1068         gchar *path;
1069
1070         cm_return_val_if_fail(node->data != NULL, FALSE);
1071
1072         if (G_NODE_IS_ROOT(node))
1073                 return FALSE;
1074
1075         item = FOLDER_ITEM(node->data);
1076
1077         path = folder_item_get_path(item);
1078         if (!is_dir_exist(path)) {
1079                 debug_print("folder '%s' not found. removing...\n", path?path:"(null)");
1080                 folder_item_remove(item);
1081         }
1082         g_free(path);
1083
1084         return FALSE;
1085 }
1086
1087 static void mh_remove_missing_folder_items(Folder *folder)
1088 {
1089         cm_return_if_fail(folder != NULL);
1090
1091         debug_print("searching missing folders...\n");
1092
1093         g_node_traverse(folder->node, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1094                         mh_remove_missing_folder_items_func, folder);
1095 }
1096
1097 static void mh_scan_tree_recursive(FolderItem *item)
1098 {
1099         Folder *folder;
1100 #ifdef G_OS_WIN32
1101         GDir *dir;
1102 #else
1103         DIR *dp;
1104         struct dirent *d;
1105 #endif
1106         const gchar *dir_name;
1107         GStatBuf s;
1108         gchar *real_path, *entry, *utf8entry, *utf8name;
1109         gint n_msg = 0;
1110
1111         cm_return_if_fail(item != NULL);
1112         cm_return_if_fail(item->folder != NULL);
1113
1114         folder = item->folder;
1115
1116         real_path = item->path ? mh_filename_from_utf8(item->path) : g_strdup(".");
1117 #ifdef G_OS_WIN32
1118         dir = g_dir_open(real_path, 0, NULL);
1119         if (!dir) {
1120                 g_warning("failed to open directory: %s\n", real_path);
1121                 g_free(real_path);
1122                 return;
1123         }
1124 #else
1125         dp = opendir(real_path);
1126         if (!dp) {
1127                 FILE_OP_ERROR(real_path, "opendir");
1128                 return;
1129         }
1130 #endif
1131         g_free(real_path);
1132
1133         debug_print("scanning %s ...\n",
1134                     item->path ? item->path
1135                     : LOCAL_FOLDER(item->folder)->rootpath);
1136         if (folder->ui_func)
1137                 folder->ui_func(folder, item, folder->ui_func_data);
1138
1139 #ifdef G_OS_WIN32
1140         while ((dir_name = g_dir_read_name(dir)) != NULL) {
1141 #else
1142         while ((d = readdir(dp)) != NULL) {
1143                 dir_name = d->d_name;
1144 #endif
1145                 if (dir_name[0] == '.') continue;
1146
1147                 utf8name = mh_filename_to_utf8(dir_name);
1148                 if (item->path)
1149                         utf8entry = g_strconcat(item->path, G_DIR_SEPARATOR_S,
1150                                                 utf8name, NULL);
1151                 else
1152                         utf8entry = g_strdup(utf8name);
1153                 entry = mh_filename_from_utf8(utf8entry);
1154
1155                 if (
1156 #if !defined(G_OS_WIN32) && defined(HAVE_DIRENT_D_TYPE)
1157                         d->d_type == DT_DIR ||
1158                         (d->d_type == DT_UNKNOWN &&
1159 #endif
1160                         g_stat(entry, &s) == 0 && S_ISDIR(s.st_mode)
1161 #if !defined(G_OS_WIN32) && defined(HAVE_DIRENT_D_TYPE)
1162                         )
1163 #endif
1164                    ) {
1165                         FolderItem *new_item = NULL;
1166                         GNode *node;
1167
1168                         node = item->node;
1169                         for (node = node->children; node != NULL; node = node->next) {
1170                                 FolderItem *cur_item = FOLDER_ITEM(node->data);
1171                                 gchar *curpath = mh_filename_from_utf8(cur_item->path);
1172                                 if (!strcmp2(curpath, entry)) {
1173                                         new_item = cur_item;
1174                                         g_free(curpath);
1175                                         break;
1176                                 }
1177                                 g_free(curpath);
1178                         }
1179                         if (!new_item) {
1180                                 debug_print("new folder '%s' found.\n", entry);
1181                                 new_item = folder_item_new(folder, utf8name, utf8entry);
1182                                 folder_item_append(item, new_item);
1183                         }
1184
1185                         if (!item->path) {
1186                                 if (!folder->inbox &&
1187                                     !strcmp(dir_name, INBOX_DIR)) {
1188                                         new_item->stype = F_INBOX;
1189                                         folder->inbox = new_item;
1190                                 } else if (!folder->outbox &&
1191                                            !strcmp(dir_name, OUTBOX_DIR)) {
1192                                         new_item->stype = F_OUTBOX;
1193                                         folder->outbox = new_item;
1194                                 } else if (!folder->draft &&
1195                                            !strcmp(dir_name, DRAFT_DIR)) {
1196                                         new_item->stype = F_DRAFT;
1197                                         folder->draft = new_item;
1198                                 } else if (!folder->queue &&
1199                                            !strcmp(dir_name, QUEUE_DIR)) {
1200                                         new_item->stype = F_QUEUE;
1201                                         folder->queue = new_item;
1202                                 } else if (!folder->trash &&
1203                                            !strcmp(dir_name, TRASH_DIR)) {
1204                                         new_item->stype = F_TRASH;
1205                                         folder->trash = new_item;
1206                                 }
1207                         }
1208
1209                         mh_scan_tree_recursive(new_item);
1210                 } else if (to_number(dir_name) > 0) n_msg++;
1211
1212                 g_free(entry);
1213                 g_free(utf8entry);
1214                 g_free(utf8name);
1215         }
1216
1217 #ifdef G_OS_WIN32
1218         g_dir_close(dir);
1219 #else
1220         closedir(dp);
1221 #endif
1222
1223         mh_set_mtime(folder, item);
1224 }
1225
1226 static gboolean mh_rename_folder_func(GNode *node, gpointer data)
1227 {
1228         FolderItem *item = node->data;
1229         gchar **paths = data;
1230         const gchar *oldpath = paths[0];
1231         const gchar *newpath = paths[1];
1232         gchar *base;
1233         gchar *new_itempath;
1234         gint oldpathlen;
1235
1236         oldpathlen = strlen(oldpath);
1237         if (strncmp(oldpath, item->path, oldpathlen) != 0) {
1238                 g_warning("path doesn't match: %s, %s\n", oldpath, item->path);
1239                 return TRUE;
1240         }
1241
1242         base = item->path + oldpathlen;
1243         while (*base == G_DIR_SEPARATOR) base++;
1244         if (*base == '\0')
1245                 new_itempath = g_strdup(newpath);
1246         else
1247                 new_itempath = g_strconcat(newpath, G_DIR_SEPARATOR_S, base,
1248                                            NULL);
1249         g_free(item->path);
1250         item->path = new_itempath;
1251
1252         return FALSE;
1253 }
1254
1255 static gchar *mh_filename_from_utf8(const gchar *path)
1256 {
1257         gchar *real_path = g_filename_from_utf8(path, -1, NULL, NULL, NULL);
1258
1259         if (!real_path) {
1260                 g_warning("mh_filename_from_utf8: failed to convert character set\n");
1261                 real_path = g_strdup(path);
1262         }
1263
1264         return real_path;
1265 }
1266
1267 static gchar *mh_filename_to_utf8(const gchar *path)
1268 {
1269         gchar *utf8path = g_filename_to_utf8(path, -1, NULL, NULL, NULL);
1270         if (!utf8path) {
1271                 g_warning("mh_filename_to_utf8: failed to convert character set\n");
1272                 utf8path = g_strdup(path);
1273         }
1274
1275         return utf8path;
1276 }
1277
1278 static gint sort_cache_list_by_msgnum(gconstpointer a, gconstpointer b)
1279 {
1280         MsgInfo *msginfo_a = (MsgInfo *) a;
1281         MsgInfo *msginfo_b = (MsgInfo *) b;
1282
1283         return (msginfo_a->msgnum - msginfo_b->msgnum);
1284 }
1285
1286 static gchar *get_unseen_seq_name(void)
1287 {
1288         static gchar *seq_name = NULL;
1289         if (!seq_name) {
1290                 gchar buf[BUFFSIZE];
1291                 gchar *tmp;
1292                 gchar *profile_path = g_strconcat(
1293                         get_home_dir(), G_DIR_SEPARATOR_S,
1294                         ".mh_profile", NULL);
1295                 FILE *fp = g_fopen(profile_path, "r");
1296                 if (fp) {
1297                         while (fgets(buf, sizeof(buf), fp) != NULL) {
1298                                 if (!strncmp(buf, "Unseen-Sequence:", strlen("Unseen-Sequence:"))) {
1299                                         gchar *seq_tmp = buf+strlen("Unseen-Sequence:");
1300                                         while (*seq_tmp == ' ')
1301                                                 seq_tmp++;
1302                                         seq_name = g_strdup(seq_tmp);
1303                                         seq_name = strretchomp(seq_name);
1304                                         break;
1305                                 }
1306                         }
1307                         fclose(fp);
1308                 }
1309                 if (!seq_name)
1310                         seq_name = g_strdup("unseen");
1311                 tmp = g_strdup_printf("%s:", seq_name);
1312                 g_free(seq_name);
1313                 seq_name = tmp;
1314         }
1315         return seq_name;
1316 }
1317
1318 static void mh_write_sequences(FolderItem *item, gboolean remove_unseen)
1319 {
1320         gchar *mh_sequences_old, *mh_sequences_new;
1321         FILE *mh_sequences_old_fp, *mh_sequences_new_fp;
1322         gchar buf[BUFFSIZE];
1323         gchar *path = NULL;
1324         gboolean err = FALSE;
1325         START_TIMING("");
1326
1327         if (!item)
1328                 return;
1329
1330         path = folder_item_get_path(item);
1331
1332         mh_sequences_old = g_strconcat(path, G_DIR_SEPARATOR_S,
1333                                             ".mh_sequences", NULL);
1334         mh_sequences_new = g_strconcat(path, G_DIR_SEPARATOR_S,
1335                                             ".mh_sequences.new", NULL);
1336         if ((mh_sequences_new_fp = g_fopen(mh_sequences_new, "w+b")) != NULL) {
1337                 GSList *msglist = folder_item_get_msg_list(item);
1338                 GSList *cur;
1339                 MsgInfo *info = NULL;
1340                 gint start = -1, end = -1;
1341                 gchar *sequence = g_strdup("");
1342                 gint seq_len = 0;
1343                 msglist = g_slist_sort(msglist, sort_cache_list_by_msgnum);
1344                 cur = msglist;
1345
1346                 /* write the unseen sequence if we don't have to scrap it */
1347                 if (!remove_unseen) do {
1348                         info = (MsgInfo *)(cur ? cur->data:NULL);
1349                         if (info && (MSG_IS_UNREAD(info->flags) || MSG_IS_NEW(info->flags))) {
1350                                 if (start < 0)
1351                                         start = end = info->msgnum;
1352                                 else
1353                                         end = info->msgnum;
1354                         } else {
1355                                 if (start > 0 && end > 0) {
1356                                         gchar tmp[32];
1357                                         gint tmp_len = 0;
1358                                         if (start != end)
1359                                                 snprintf(tmp, 31, " %d-%d", start, end);
1360                                         else
1361                                                 snprintf(tmp, 31, " %d", start);
1362
1363                                         tmp_len = strlen(tmp);
1364                                         sequence = g_realloc(sequence, seq_len+tmp_len+1);
1365                                         strcpy(sequence+seq_len, tmp);
1366                                         seq_len += tmp_len;
1367
1368                                         start = end = -1;
1369                                 }
1370                         }
1371                         cur = cur ? cur->next:NULL;
1372                 } while (cur || (start > 0 && end > 0));
1373                 if (sequence && *sequence) {
1374                         if (fprintf(mh_sequences_new_fp, "%s%s\n",
1375                                         get_unseen_seq_name(), sequence) < 0)
1376                                 err = TRUE;
1377                         else
1378                                 debug_print("wrote unseen sequence: '%s%s'\n",
1379                                         get_unseen_seq_name(), sequence);
1380                 }
1381                 /* rewrite the rest of the file */
1382                 if ((mh_sequences_old_fp = g_fopen(mh_sequences_old, "r+b")) != NULL) {
1383                         while (fgets(buf, sizeof(buf), mh_sequences_old_fp) != NULL) {
1384                                 if (strncmp(buf, get_unseen_seq_name(), strlen(get_unseen_seq_name())))
1385                                         if (fprintf(mh_sequences_new_fp, "%s", buf) < 0) {
1386                                                 err = TRUE;
1387                                                 break;
1388                                         }
1389                         }
1390                         fclose(mh_sequences_old_fp);
1391                 }
1392
1393                 fflush(mh_sequences_new_fp);
1394 #if 0
1395                 fsync(fileno(mh_sequences_new_fp));
1396 #endif
1397                 if (fclose(mh_sequences_new_fp) == EOF)
1398                         err = TRUE;
1399
1400                 if (!err) {
1401                         if (g_rename(mh_sequences_new, mh_sequences_old) < 0)
1402                                 FILE_OP_ERROR(mh_sequences_new, "rename");
1403                 }
1404                 g_free(sequence);
1405                 procmsg_msg_list_free(msglist);
1406         }
1407         g_free(mh_sequences_old);
1408         g_free(mh_sequences_new);
1409         g_free(path);
1410
1411         END_TIMING();
1412 }
1413
1414 static int mh_item_close(Folder *folder, FolderItem *item)
1415 {
1416         time_t last_mtime = (time_t)0;
1417         gboolean need_scan = mh_scan_required(item->folder, item);
1418         last_mtime = item->mtime;
1419
1420         mh_write_sequences(item, FALSE);
1421
1422         if (item->mtime == last_mtime && !need_scan) {
1423                 mh_set_mtime(folder, item);
1424         }
1425
1426         return 0;
1427 }
1428
1429 static void mh_set_mtime(Folder *folder, FolderItem *item)
1430 {
1431         GStatBuf s;
1432         gchar *path = folder_item_get_path(item);
1433
1434         cm_return_if_fail(path != NULL);
1435
1436         if (g_stat(path, &s) < 0) {
1437                 FILE_OP_ERROR(path, "stat");
1438                 g_free(path);
1439                 return;
1440         }
1441
1442         item->mtime = s.st_mtime;
1443         debug_print("MH: forced mtime of %s to %ld\n", item->name?item->name:"(null)", item->mtime);
1444         g_free(path);
1445 }