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