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         gchar *parent_path;
 736
 737         parent_path = folder_item_get_path(item);
 738         path = g_strdup_printf("%s%c%d", parent_path,
 739                         G_DIR_SEPARATOR, msginfo->msgnum);
 740         g_free(parent_path);
 741         if (g_stat((path), &s) < 0 ||
 742             msginfo->size  != s.st_size || (
 743                 (msginfo->mtime - s.st_mtime != 0) &&
 744                 (msginfo->mtime - s.st_mtime != 3600) &&
 745                 (msginfo->mtime - s.st_mtime != -3600))) {
 746                 g_free(path);
 747                 return TRUE;
 748         }
 749
 750         g_free(path);
 751         return FALSE;
 752 }
 753
 754 static gint mh_scan_tree(Folder *folder)
 755 {
 756         FolderItem *item;
 757
 758         cm_return_val_if_fail(folder != NULL, -1);
 759
 760         if (!folder->node) {
 761                 item = folder_item_new(folder, folder->name, NULL);
 762                 item->folder = folder;
 763                 folder->node = item->node = g_node_new(item);
 764         } else
 765                 item = FOLDER_ITEM(folder->node->data);
 766
 767         mh_create_tree(folder);
 768         mh_remove_missing_folder_items(folder);
 769         mh_scan_tree_recursive(item);
 770
 771         return 0;
 772 }
 773
 774 #define MAKE_DIR_IF_NOT_EXIST(dir) \
 775 { \
 776         if (!is_dir_exist(dir)) { \
 777                 if (is_file_exist(dir)) { \
 778                         g_warning("File '%s' already exists. " \
 779                                     "Can't create folder.", dir); \
 780                         return -1; \
 781                 } \
 782                 if (make_dir_hier(dir) < 0) \
 783                         return -1; \
 784                 debug_print("Created dir '%s'\n", dir); \
 785         } \
 786 }
 787
 788 static gint mh_create_tree(Folder *folder)
 789 {
 790         gchar *rootpath, *f, *path;
 791
 792         cm_return_val_if_fail(folder != NULL, -1);
 793
 794         rootpath = LOCAL_FOLDER(folder)->rootpath;
 795 #ifdef G_OS_UNIX
 796         if (*rootpath == '/') {
 797 #elif defined G_OS_WIN32
 798         if (g_ascii_isalpha(*rootpath) && !strncmp(rootpath + 1, ":\\", 2)) {
 799 #endif
 800                 /* Folder path is absolute. */
 801                 rootpath = g_strdup(rootpath);
 802         } else {
 803                 /* Folder path is relative, using mail base dir. */
 804                 rootpath = g_strconcat(get_mail_base_dir(), G_DIR_SEPARATOR_S,
 805                                 rootpath, NULL);
 806         }
 807
 808         MAKE_DIR_IF_NOT_EXIST(rootpath);
 809
 810         /* Create special directories as needed */
 811         if (folder->inbox != NULL &&
 812                         folder->inbox->path != NULL)
 813                 f = folder->inbox->path;
 814         else
 815                 f = INBOX_DIR;
 816         path = g_strconcat(rootpath, G_DIR_SEPARATOR_S, f, NULL);
 817         MAKE_DIR_IF_NOT_EXIST(path);
 818         g_free(path);
 819
 820         if (folder->outbox != NULL &&
 821                         folder->outbox->path != NULL)
 822                 f = folder->outbox->path;
 823         else
 824                 f = OUTBOX_DIR;
 825         path = g_strconcat(rootpath, G_DIR_SEPARATOR_S, f, NULL);
 826         MAKE_DIR_IF_NOT_EXIST(path);
 827         g_free(path);
 828
 829         if (folder->draft != NULL &&
 830                         folder->draft->path != NULL)
 831                 f = folder->draft->path;
 832         else
 833                 f = DRAFT_DIR;
 834         path = g_strconcat(rootpath, G_DIR_SEPARATOR_S, f, NULL);
 835         MAKE_DIR_IF_NOT_EXIST(path);
 836         g_free(path);
 837
 838         if (folder->queue != NULL &&
 839                         folder->queue->path != NULL)
 840                 f = folder->queue->path;
 841         else
 842                 f = QUEUE_DIR;
 843         path = g_strconcat(rootpath, G_DIR_SEPARATOR_S, f, NULL);
 844         MAKE_DIR_IF_NOT_EXIST(path);
 845         g_free(path);
 846
 847         if (folder->trash != NULL &&
 848                         folder->trash->path != NULL)
 849                 f = folder->trash->path;
 850         else
 851                 f = TRASH_DIR;
 852         path = g_strconcat(rootpath, G_DIR_SEPARATOR_S, f, NULL);
 853         MAKE_DIR_IF_NOT_EXIST(path);
 854         g_free(path);
 855
 856         g_free(rootpath);
 857         return 0;
 858 }
 859
 860 #undef MAKE_DIR_IF_NOT_EXIST
 861
 862 static gchar *mh_item_get_path(Folder *folder, FolderItem *item)
 863 {
 864         gchar *folder_path, *path;
 865         gchar *real_path;
 866         cm_return_val_if_fail(folder != NULL, NULL);
 867         cm_return_val_if_fail(item != NULL, NULL);
 868
 869         folder_path = g_strdup(LOCAL_FOLDER(folder)->rootpath);
 870         cm_return_val_if_fail(folder_path != NULL, NULL);
 871
 872         /* FIXME: [W32] The code below does not correctly merge
 873            relative filenames; there should be a function to handle
 874            this.  */
 875         if ( !is_relative_filename (folder_path) ) {
 876                 if (item->path)
 877                         path = g_strconcat(folder_path, G_DIR_SEPARATOR_S,
 878                                            item->path, NULL);
 879                 else
 880                         path = g_strdup(folder_path);
 881         } else {
 882                 if (item->path)
 883                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 884                                            folder_path, G_DIR_SEPARATOR_S,
 885                                            item->path, NULL);
 886                 else
 887                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 888                                            folder_path, NULL);
 889         }
 890         g_free(folder_path);
 891         real_path = mh_filename_from_utf8(path);
 892         if (!is_dir_exist(real_path) && is_dir_exist(path)) {
 893                 /* mmh, older version did put utf8 filenames instead of
 894                  * the correct encoding */
 895                 if (g_rename(path, real_path) == 0)
 896                         folder_item_scan(item);
 897         }
 898
 899         g_free(path);
 900         return real_path;
 901 }
 902
 903 static gboolean mh_renumber_msg(MsgInfo *info)
 904 {
 905         gchar *src, *dest;
 906         gboolean result = FALSE;
 907         guint num;
 908         cm_return_val_if_fail(info != NULL, FALSE);
 909
 910         src = folder_item_fetch_msg(info->folder, info->msgnum);
 911         dest = mh_get_new_msg_filename(info->folder);
 912         num = info->folder->last_num + 1;
 913
 914         if (move_file(src, dest, FALSE) == 0) {
 915                 msgcache_remove_msg(info->folder->cache, info->msgnum);
 916                 info->msgnum = num;
 917                 msgcache_add_msg(info->folder->cache, info);
 918                 result = TRUE;
 919         }
 920
 921         g_free(src);
 922         g_free(dest);
 923
 924         return result;
 925 }
 926
 927 static FolderItem *mh_create_folder(Folder *folder, FolderItem *parent,
 928                                     const gchar *name)
 929 {
 930         gchar *path, *real_name;
 931         gchar *fullpath;
 932         FolderItem *new_item;
 933         gchar *mh_sequences_filename;
 934         FILE *mh_sequences_file;
 935
 936         cm_return_val_if_fail(folder != NULL, NULL);
 937         cm_return_val_if_fail(parent != NULL, NULL);
 938         cm_return_val_if_fail(name != NULL, NULL);
 939
 940         path = folder_item_get_path(parent);
 941         if (!is_dir_exist(path))
 942                 if (make_dir_hier(path) != 0)
 943                         return NULL;
 944
 945         real_name = mh_filename_from_utf8(name);
 946         fullpath = g_strconcat(path, G_DIR_SEPARATOR_S, real_name, NULL);
 947         g_free(real_name);
 948         g_free(path);
 949
 950         if (to_number(name) > 0) {
 951                 MsgInfo *info = folder_item_get_msginfo(parent, to_number(name));
 952                 if (info != NULL) {
 953                         gboolean ok = mh_renumber_msg(info);
 954                         procmsg_msginfo_free(&info);
 955                         if (!ok) {
 956                                 g_free(fullpath);
 957                                 return NULL;
 958                         }
 959                 }
 960         }
 961
 962         if (make_dir(fullpath) < 0) {
 963                 g_free(fullpath);
 964                 return NULL;
 965         }
 966
 967         g_free(fullpath);
 968
 969         if (parent->path)
 970                 path = g_strconcat(parent->path, G_DIR_SEPARATOR_S, name,
 971                                    NULL);
 972         else
 973                 path = g_strdup(name);
 974         new_item = folder_item_new(folder, name, path);
 975         folder_item_append(parent, new_item);
 976
 977         g_free(path);
 978
 979         path = folder_item_get_path(new_item);
 980         mh_sequences_filename = g_strconcat(path, G_DIR_SEPARATOR_S,
 981                                             ".mh_sequences", NULL);
 982         if ((mh_sequences_file = g_fopen(mh_sequences_filename, "a+b")) != NULL) {
 983                 fclose(mh_sequences_file);
 984         }
 985         g_free(mh_sequences_filename);
 986         g_free(path);
 987
 988         return new_item;
 989 }
 990
 991 static gint mh_rename_folder(Folder *folder, FolderItem *item,
 992                              const gchar *name)
 993 {
 994         gchar *real_name;
 995         gchar *oldpath;
 996         gchar *dirname;
 997         gchar *newpath, *utf8newpath;
 998         gchar *paths[2];
 999
1000         cm_return_val_if_fail(folder != NULL, -1);
1001         cm_return_val_if_fail(item != NULL, -1);
1002         cm_return_val_if_fail(item->path != NULL, -1);
1003         cm_return_val_if_fail(name != NULL, -1);
1004
1005         oldpath = folder_item_get_path(item);
1006         if (!is_dir_exist(oldpath))
1007                 make_dir_hier(oldpath);
1008
1009         dirname = g_path_get_dirname(oldpath);
1010         real_name = mh_filename_from_utf8(name);
1011         newpath = g_strconcat(dirname, G_DIR_SEPARATOR_S, real_name, NULL);
1012         g_free(real_name);
1013
1014         if (g_rename(oldpath, newpath) < 0) {
1015                 FILE_OP_ERROR(oldpath, "rename");
1016                 g_free(oldpath);
1017                 g_free(newpath);
1018                 return -1;
1019         }
1020
1021         g_free(oldpath);
1022         g_free(newpath);
1023
1024         if (strchr(item->path, G_DIR_SEPARATOR) != NULL) {
1025                 dirname = g_path_get_dirname(item->path);
1026                 utf8newpath = g_strconcat(dirname, G_DIR_SEPARATOR_S,
1027                                           name, NULL);
1028                 g_free(dirname);
1029         } else
1030                 utf8newpath = g_strdup(name);
1031
1032         g_free(item->name);
1033         item->name = g_strdup(name);
1034
1035         paths[0] = g_strdup(item->path);
1036         paths[1] = utf8newpath;
1037         g_node_traverse(item->node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
1038                         mh_rename_folder_func, paths);
1039
1040         g_free(paths[0]);
1041         g_free(paths[1]);
1042         return 0;
1043 }
1044
1045 static gint mh_remove_folder(Folder *folder, FolderItem *item)
1046 {
1047         gchar *path;
1048         gint ret;
1049
1050         cm_return_val_if_fail(folder != NULL, -1);
1051         cm_return_val_if_fail(item != NULL, -1);
1052         cm_return_val_if_fail(item->path != NULL, -1);
1053
1054         path = folder_item_get_path(item);
1055         if ((ret = remove_dir_recursive(path)) < 0) {
1056                 g_warning("can't remove directory '%s'", path);
1057                 g_free(path);
1058                 return ret;
1059         }
1060
1061         g_free(path);
1062         folder_item_remove(item);
1063         return 0;
1064 }
1065
1066 static MsgInfo *mh_parse_msg(const gchar *file, FolderItem *item)
1067 {
1068         MsgInfo *msginfo;
1069         MsgFlags flags;
1070
1071         cm_return_val_if_fail(item != NULL, NULL);
1072         cm_return_val_if_fail(file != NULL, NULL);
1073
1074         flags.perm_flags = MSG_NEW|MSG_UNREAD;
1075         flags.tmp_flags = 0;
1076
1077         if (folder_has_parent_of_type(item, F_QUEUE)) {
1078                 MSG_SET_TMP_FLAGS(flags, MSG_QUEUED);
1079         } else if (folder_has_parent_of_type(item, F_DRAFT)) {
1080                 MSG_SET_TMP_FLAGS(flags, MSG_DRAFT);
1081         }
1082
1083         msginfo = procheader_parse_file(file, flags, FALSE, FALSE);
1084         if (!msginfo) return NULL;
1085
1086         msginfo->msgnum = atoi(file);
1087         msginfo->folder = item;
1088
1089         return msginfo;
1090 }
1091
1092 static gboolean mh_remove_missing_folder_items_func(GNode *node, gpointer data)
1093 {
1094         FolderItem *item;
1095         gchar *path;
1096
1097         cm_return_val_if_fail(node->data != NULL, FALSE);
1098
1099         if (G_NODE_IS_ROOT(node))
1100                 return FALSE;
1101
1102         item = FOLDER_ITEM(node->data);
1103
1104         path = folder_item_get_path(item);
1105         if (!is_dir_exist(path)) {
1106                 debug_print("folder '%s' not found. removing...\n", path?path:"(null)");
1107                 folder_item_remove(item);
1108         }
1109         g_free(path);
1110
1111         return FALSE;
1112 }
1113
1114 static void mh_remove_missing_folder_items(Folder *folder)
1115 {
1116         cm_return_if_fail(folder != NULL);
1117
1118         debug_print("searching missing folders...\n");
1119
1120         g_node_traverse(folder->node, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1121                         mh_remove_missing_folder_items_func, folder);
1122 }
1123
1124 static void mh_scan_tree_recursive(FolderItem *item)
1125 {
1126         Folder *folder;
1127         GDir *dir;
1128         const gchar *dir_name;
1129         gchar *entry, *utf8entry, *utf8name, *path;
1130         gint n_msg = 0;
1131         GError *error = NULL;
1132
1133         cm_return_if_fail(item != NULL);
1134         cm_return_if_fail(item->folder != NULL);
1135
1136         folder = item->folder;
1137
1138         path = folder_item_get_path(item);
1139         debug_print("mh_scan_tree_recursive() opening '%s'\n", path);
1140         dir = g_dir_open(path, 0, &error);
1141         if (!dir) {
1142                 g_warning("failed to open directory '%s': %s (%d)",
1143                                 path, error->message, error->code);
1144                 g_error_free(error);
1145                 g_free(path);
1146                 return;
1147         }
1148
1149         debug_print("scanning %s ...\n",
1150                     item->path ? item->path
1151                     : LOCAL_FOLDER(item->folder)->rootpath);
1152         if (folder->ui_func)
1153                 folder->ui_func(folder, item, folder->ui_func_data);
1154
1155         while ((dir_name = g_dir_read_name(dir)) != NULL) {
1156                 if (dir_name[0] == '.') continue;
1157
1158                 entry = g_strconcat(path, G_DIR_SEPARATOR_S, dir_name, NULL);
1159
1160                 utf8name = mh_filename_to_utf8(dir_name);
1161                 if (item->path)
1162                         utf8entry = g_strconcat(item->path, G_DIR_SEPARATOR_S,
1163                                                 utf8name, NULL);
1164                 else
1165                         utf8entry = g_strdup(utf8name);
1166
1167                 if (g_file_test(entry, G_FILE_TEST_IS_DIR)) {
1168                         FolderItem *new_item = NULL;
1169                         GNode *node;
1170
1171                         node = item->node;
1172                         for (node = node->children; node != NULL; node = node->next) {
1173                                 FolderItem *cur_item = FOLDER_ITEM(node->data);
1174                                 gchar *curpath = folder_item_get_path(cur_item);
1175                                 if (!strcmp2(curpath, entry)) {
1176                                         new_item = cur_item;
1177                                         g_free(curpath);
1178                                         break;
1179                                 }
1180                                 g_free(curpath);
1181                         }
1182                         if (!new_item) {
1183                                 debug_print("new folder '%s' found.\n", entry);
1184                                 new_item = folder_item_new(folder, utf8name, utf8entry);
1185                                 folder_item_append(item, new_item);
1186                         }
1187
1188                         if (!item->path) {
1189                                 if (!folder->inbox &&
1190                                     !strcmp(dir_name, INBOX_DIR)) {
1191                                         new_item->stype = F_INBOX;
1192                                         folder->inbox = new_item;
1193                                 } else if (!folder->outbox &&
1194                                            !strcmp(dir_name, OUTBOX_DIR)) {
1195                                         new_item->stype = F_OUTBOX;
1196                                         folder->outbox = new_item;
1197                                 } else if (!folder->draft &&
1198                                            !strcmp(dir_name, DRAFT_DIR)) {
1199                                         new_item->stype = F_DRAFT;
1200                                         folder->draft = new_item;
1201                                 } else if (!folder->queue &&
1202                                            !strcmp(dir_name, QUEUE_DIR)) {
1203                                         new_item->stype = F_QUEUE;
1204                                         folder->queue = new_item;
1205                                 } else if (!folder->trash &&
1206                                            !strcmp(dir_name, TRASH_DIR)) {
1207                                         new_item->stype = F_TRASH;
1208                                         folder->trash = new_item;
1209                                 }
1210                         }
1211
1212                         mh_scan_tree_recursive(new_item);
1213                 } else if (to_number(dir_name) > 0) n_msg++;
1214
1215                 g_free(entry);
1216                 g_free(utf8entry);
1217                 g_free(utf8name);
1218         }
1219
1220         g_dir_close(dir);
1221         g_free(path);
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", 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");
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");
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 }