src/mh.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2012 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 "mh.h"
  38 #include "procmsg.h"
  39 #include "procheader.h"
  40 #include "utils.h"
  41 #include "codeconv.h"
  42 #include "statusbar.h"
  43 #include "gtkutils.h"
  44 #include "timing.h"
  45
  46 /* Define possible missing constants for Windows. */
  47 #ifdef G_OS_WIN32
  48 # ifndef S_IRGRP
  49 # define S_IRGRP 0
  50 # define S_IWGRP 0
  51 # endif
  52 # ifndef S_IROTH
  53 # define S_IROTH 0
  54 # define S_IWOTH 0
  55 # endif
  56 #endif
  57
  58
  59 static void     mh_folder_init          (Folder         *folder,
  60                                          const gchar    *name,
  61                                          const gchar    *path);
  62
  63 static Folder   *mh_folder_new          (const gchar    *name,
  64                                          const gchar    *path);
  65 static void     mh_folder_destroy       (Folder         *folder);
  66 static gchar   *mh_fetch_msg            (Folder         *folder,
  67                                          FolderItem     *item,
  68                                          gint            num);
  69 static MsgInfo *mh_get_msginfo          (Folder         *folder,
  70                                          FolderItem     *item,
  71                                          gint            num);
  72 static gint     mh_add_msg              (Folder         *folder,
  73                                          FolderItem     *dest,
  74                                          const gchar    *file,
  75                                          MsgFlags       *flags);
  76 static gint     mh_add_msgs             (Folder         *folder,
  77                                          FolderItem     *dest,
  78                                          GSList         *file_list,
  79                                          GHashTable     *relation);
  80 static gint     mh_copy_msg             (Folder         *folder,
  81                                          FolderItem     *dest,
  82                                          MsgInfo        *msginfo);
  83 static gint     mh_copy_msgs            (Folder         *folder,
  84                                          FolderItem     *dest,
  85                                          MsgInfoList    *msglist,
  86                                          GHashTable     *relation);
  87 static gint     mh_remove_msg           (Folder         *folder,
  88                                          FolderItem     *item,
  89                                          gint            num);
  90 static gint     mh_remove_msgs          (Folder         *folder,
  91                                          FolderItem     *item,
  92                                          MsgInfoList    *msglist,
  93                                          GHashTable     *relation);
  94 static gint     mh_remove_all_msg       (Folder         *folder,
  95                                          FolderItem     *item);
  96 static gboolean mh_is_msg_changed       (Folder         *folder,
  97                                          FolderItem     *item,
  98                                          MsgInfo        *msginfo);
  99
 100 static gint     mh_get_num_list         (Folder         *folder,
 101                                          FolderItem     *item,
 102                                          GSList         **list,
 103                                          gboolean       *old_uids_valid);
 104 static gint     mh_scan_tree            (Folder         *folder);
 105
 106 static gint    mh_create_tree           (Folder         *folder);
 107 static FolderItem *mh_create_folder     (Folder         *folder,
 108                                          FolderItem     *parent,
 109                                          const gchar    *name);
 110 static gint    mh_rename_folder         (Folder         *folder,
 111                                          FolderItem     *item,
 112                                          const gchar    *name);
 113 static gint    mh_remove_folder         (Folder         *folder,
 114                                          FolderItem     *item);
 115
 116 static gchar   *mh_get_new_msg_filename         (FolderItem     *dest);
 117
 118 static MsgInfo *mh_parse_msg                    (const gchar    *file,
 119                                                  FolderItem     *item);
 120 static void     mh_remove_missing_folder_items  (Folder         *folder);
 121 static gchar    *mh_filename_from_utf8          (const gchar    *path);
 122 static gchar    *mh_filename_to_utf8            (const gchar    *path);
 123 static void     mh_scan_tree_recursive          (FolderItem     *item);
 124
 125 static gboolean mh_rename_folder_func           (GNode          *node,
 126                                                  gpointer        data);
 127 static gchar   *mh_item_get_path                (Folder *folder,
 128                                                  FolderItem *item);
 129
 130 static gboolean mh_scan_required        (Folder         *folder,
 131                                          FolderItem     *item);
 132 static void mh_set_mtime                (Folder         *folder,
 133                                          FolderItem *item);
 134 static int mh_item_close                (Folder         *folder,
 135                                          FolderItem     *item);
 136 #if 0
 137 static gint mh_get_flags                (Folder *folder, FolderItem *item,
 138                                          MsgInfoList *msginfo_list, GHashTable *msgflags);
 139 #endif
 140 static void mh_write_sequences          (FolderItem     *item, gboolean remove_unseen);
 141
 142 static FolderClass mh_class;
 143
 144 FolderClass *mh_get_class(void)
 145 {
 146         if (mh_class.idstr == NULL) {
 147                 mh_class.type = F_MH;
 148                 mh_class.idstr = "mh";
 149                 mh_class.uistr = "MH";
 150
 151                 /* Folder functions */
 152                 mh_class.new_folder = mh_folder_new;
 153                 mh_class.destroy_folder = mh_folder_destroy;
 154                 mh_class.set_xml = folder_local_set_xml;
 155                 mh_class.get_xml = folder_local_get_xml;
 156                 mh_class.scan_tree = mh_scan_tree;
 157                 mh_class.create_tree = mh_create_tree;
 158
 159                 /* FolderItem functions */
 160                 mh_class.item_get_path = mh_item_get_path;
 161                 mh_class.create_folder = mh_create_folder;
 162                 mh_class.rename_folder = mh_rename_folder;
 163                 mh_class.remove_folder = mh_remove_folder;
 164                 mh_class.get_num_list = mh_get_num_list;
 165                 mh_class.scan_required = mh_scan_required;
 166                 mh_class.set_mtime = mh_set_mtime;
 167                 mh_class.close = mh_item_close;
 168                 mh_class.get_flags = NULL; /*mh_get_flags */;
 169
 170                 /* Message functions */
 171                 mh_class.get_msginfo = mh_get_msginfo;
 172                 mh_class.fetch_msg = mh_fetch_msg;
 173                 mh_class.add_msg = mh_add_msg;
 174                 mh_class.add_msgs = mh_add_msgs;
 175                 mh_class.copy_msg = mh_copy_msg;
 176                 mh_class.copy_msgs = mh_copy_msgs;
 177                 mh_class.remove_msg = mh_remove_msg;
 178                 mh_class.remove_msgs = mh_remove_msgs;
 179                 mh_class.remove_all_msg = mh_remove_all_msg;
 180                 mh_class.is_msg_changed = mh_is_msg_changed;
 181         }
 182
 183         return &mh_class;
 184 }
 185
 186 static Folder *mh_folder_new(const gchar *name, const gchar *path)
 187 {
 188         Folder *folder;
 189
 190         folder = (Folder *)g_new0(MHFolder, 1);
 191         folder->klass = &mh_class;
 192         mh_folder_init(folder, name, path);
 193
 194         return folder;
 195 }
 196
 197 static void mh_folder_destroy(Folder *folder)
 198 {
 199         folder_local_folder_destroy(LOCAL_FOLDER(folder));
 200 }
 201
 202 static void mh_folder_init(Folder *folder, const gchar *name, const gchar *path)
 203 {
 204         folder_local_folder_init(folder, name, path);
 205
 206 }
 207
 208 gboolean mh_scan_required(Folder *folder, FolderItem *item)
 209 {
 210         gchar *path;
 211         struct stat s;
 212
 213         path = folder_item_get_path(item);
 214         cm_return_val_if_fail(path != NULL, FALSE);
 215
 216         if (g_stat(path, &s) < 0) {
 217                 FILE_OP_ERROR(path, "stat");
 218                 g_free(path);
 219                 return FALSE;
 220         }
 221
 222         if ((s.st_mtime > item->mtime) &&
 223                 (s.st_mtime - 3600 != item->mtime)) {
 224                 debug_print("MH scan required, folder updated: %s (%ld > %ld)\n",
 225                             path?path:"(null)",
 226                             (long int) s.st_mtime,
 227                             (long int) item->mtime);
 228                 g_free(path);
 229                 return TRUE;
 230         }
 231
 232         debug_print("MH scan not required: %s (%ld <= %ld)\n",
 233                     path?path:"(null)",
 234                     (long int) s.st_mtime,
 235                     (long int) item->mtime);
 236         g_free(path);
 237         return FALSE;
 238 }
 239
 240 static void mh_get_last_num(Folder *folder, FolderItem *item)
 241 {
 242         gchar *path;
 243         DIR *dp;
 244         struct dirent *d;
 245         gint max = 0;
 246         gint num;
 247
 248         cm_return_if_fail(item != NULL);
 249
 250         debug_print("mh_get_last_num(): Scanning %s ...\n", item->path?item->path:"(null)");
 251
 252         path = folder_item_get_path(item);
 253         cm_return_if_fail(path != NULL);
 254         if (change_dir(path) < 0) {
 255                 g_free(path);
 256                 return;
 257         }
 258         g_free(path);
 259
 260         if ((dp = opendir(".")) == NULL) {
 261                 FILE_OP_ERROR(item->path, "opendir");
 262                 return;
 263         }
 264
 265         while ((d = readdir(dp)) != NULL) {
 266                 if ((num = to_number(d->d_name)) > 0 &&
 267                     dirent_is_regular_file(d)) {
 268                         if (max < num)
 269                                 max = num;
 270                 }
 271                 if (num % 2000 == 0)
 272                         GTK_EVENTS_FLUSH();
 273         }
 274         closedir(dp);
 275
 276         debug_print("Last number in dir %s = %d\n", item->path?item->path:"(null)", max);
 277         item->last_num = max;
 278 }
 279
 280 gint mh_get_num_list(Folder *folder, FolderItem *item, GSList **list, gboolean *old_uids_valid)
 281 {
 282
 283         gchar *path;
 284         DIR *dp;
 285         struct dirent *d;
 286         gint num, nummsgs = 0;
 287
 288         cm_return_val_if_fail(item != NULL, -1);
 289
 290         debug_print("mh_get_num_list(): Scanning %s ...\n", item->path?item->path:"(null)");
 291
 292         *old_uids_valid = TRUE;
 293
 294         path = folder_item_get_path(item);
 295         cm_return_val_if_fail(path != NULL, -1);
 296         if (change_dir(path) < 0) {
 297                 g_free(path);
 298                 return -1;
 299         }
 300         g_free(path);
 301
 302         if ((dp = opendir(".")) == NULL) {
 303                 FILE_OP_ERROR(item->path, "opendir");
 304                 return -1;
 305         }
 306
 307         while ((d = readdir(dp)) != NULL) {
 308                 if ((num = to_number(d->d_name)) > 0) {
 309                         *list = g_slist_prepend(*list, GINT_TO_POINTER(num));
 310                         nummsgs++;
 311                 }
 312         }
 313         closedir(dp);
 314
 315         mh_set_mtime(folder, item);
 316         return nummsgs;
 317 }
 318
 319 static gchar *mh_fetch_msg(Folder *folder, FolderItem *item, gint num)
 320 {
 321         gchar *path;
 322         gchar *file;
 323
 324         cm_return_val_if_fail(item != NULL, NULL);
 325         cm_return_val_if_fail(num > 0, NULL);
 326
 327         path = folder_item_get_path(item);
 328         file = g_strconcat(path, G_DIR_SEPARATOR_S, itos(num), NULL);
 329
 330         if (!is_file_exist(file)) {
 331                 g_free(file);
 332                 g_free(path);
 333                 return NULL;
 334         }
 335         g_free(path);
 336         return file;
 337 }
 338
 339 static MsgInfo *mh_get_msginfo(Folder *folder, FolderItem *item, gint num)
 340 {
 341         MsgInfo *msginfo;
 342         gchar *file;
 343
 344         cm_return_val_if_fail(item != NULL, NULL);
 345         if (num <= 0)
 346                 return NULL;
 347
 348         file = mh_fetch_msg(folder, item, num);
 349         if (!file) return NULL;
 350
 351         msginfo = mh_parse_msg(file, item);
 352         if (msginfo)
 353                 msginfo->msgnum = num;
 354
 355         g_free(file);
 356
 357         return msginfo;
 358 }
 359
 360 static gchar *mh_get_new_msg_filename(FolderItem *dest)
 361 {
 362         gchar *destfile;
 363         gchar *destpath;
 364
 365         destpath = folder_item_get_path(dest);
 366         cm_return_val_if_fail(destpath != NULL, NULL);
 367
 368         if (!is_dir_exist(destpath))
 369                 make_dir_hier(destpath);
 370
 371         for (;;) {
 372                 destfile = g_strdup_printf("%s%c%d", destpath, G_DIR_SEPARATOR,
 373                                            dest->last_num + 1);
 374                 if (is_file_entry_exist(destfile)) {
 375                         dest->last_num++;
 376                         g_free(destfile);
 377                 } else
 378                         break;
 379         }
 380
 381         g_free(destpath);
 382
 383         return destfile;
 384 }
 385
 386 static gint mh_add_msg(Folder *folder, FolderItem *dest, const gchar *file, MsgFlags *flags)
 387 {
 388         gint ret;
 389         GSList file_list;
 390         MsgFileInfo fileinfo;
 391
 392         cm_return_val_if_fail(file != NULL, -1);
 393
 394         fileinfo.msginfo = NULL;
 395         fileinfo.file = (gchar *)file;
 396         fileinfo.flags = flags;
 397         file_list.data = &fileinfo;
 398         file_list.next = NULL;
 399
 400         ret = mh_add_msgs(folder, dest, &file_list, NULL);
 401         return ret;
 402 }
 403
 404 static gint mh_add_msgs(Folder *folder, FolderItem *dest, GSList *file_list,
 405                  GHashTable *relation)
 406 {
 407         gchar *destfile;
 408         GSList *cur;
 409         MsgFileInfo *fileinfo;
 410
 411         cm_return_val_if_fail(dest != NULL, -1);
 412         cm_return_val_if_fail(file_list != NULL, -1);
 413
 414         if (dest->last_num < 0) {
 415                 mh_get_last_num(folder, dest);
 416                 if (dest->last_num < 0) return -1;
 417         }
 418
 419         for (cur = file_list; cur != NULL; cur = cur->next) {
 420                 fileinfo = (MsgFileInfo *)cur->data;
 421
 422                 destfile = mh_get_new_msg_filename(dest);
 423                 if (destfile == NULL) return -1;
 424
 425 #ifdef G_OS_UNIX
 426                 if (link(fileinfo->file, destfile) < 0) {
 427 #endif
 428                         if (copy_file(fileinfo->file, destfile, TRUE) < 0) {
 429                                 g_warning(_("can't copy message %s to %s\n"),
 430                                           fileinfo->file, destfile);
 431                                 g_free(destfile);
 432                                 return -1;
 433                         }
 434 #ifdef G_OS_UNIX
 435                 }
 436 #endif
 437
 438                 if (relation != NULL)
 439                         g_hash_table_insert(relation, fileinfo, GINT_TO_POINTER(dest->last_num + 1));
 440                 g_free(destfile);
 441                 dest->last_num++;
 442         }
 443         mh_write_sequences(dest, TRUE);
 444         return dest->last_num;
 445 }
 446
 447 static gint mh_copy_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
 448 {
 449         GSList msglist;
 450
 451         cm_return_val_if_fail(msginfo != NULL, -1);
 452
 453         msglist.data = msginfo;
 454         msglist.next = NULL;
 455
 456         return mh_copy_msgs(folder, dest, &msglist, NULL);
 457 }
 458
 459 static gint mh_copy_msgs(Folder *folder, FolderItem *dest, MsgInfoList *msglist,
 460                          GHashTable *relation)
 461 {
 462         gboolean dest_need_scan = FALSE;
 463         gboolean src_need_scan = FALSE;
 464         FolderItem *src = NULL;
 465         gchar *srcfile;
 466         gchar *destfile;
 467         gint filemode = 0;
 468         FolderItemPrefs *prefs;
 469         MsgInfo *msginfo = NULL;
 470         MsgInfoList *cur = NULL;
 471         gint curnum = 0, total = 0;
 472         gchar *srcpath = NULL;
 473         gboolean full_fetch = FALSE;
 474         time_t last_dest_mtime = (time_t)0;
 475         time_t last_src_mtime = (time_t)0;
 476
 477         cm_return_val_if_fail(dest != NULL, -1);
 478         cm_return_val_if_fail(msglist != NULL, -1);
 479
 480         msginfo = (MsgInfo *)msglist->data;
 481
 482         cm_return_val_if_fail(msginfo != NULL, -1);
 483
 484         if (msginfo->folder == dest) {
 485                 g_warning("the src folder is identical to the dest.\n");
 486                 return -1;
 487         }
 488
 489         if (msginfo->folder->folder != dest->folder)
 490                 full_fetch = TRUE;
 491
 492         if (FOLDER_TYPE(msginfo->folder->folder) == F_MH) {
 493                 src = msginfo->folder;
 494         }
 495
 496         if (dest->last_num < 0) {
 497                 mh_get_last_num(folder, dest);
 498                 if (dest->last_num < 0) return -1;
 499         }
 500
 501         prefs = dest->prefs;
 502
 503         srcpath = folder_item_get_path(msginfo->folder);
 504
 505         dest_need_scan = mh_scan_required(dest->folder, dest);
 506         last_dest_mtime = dest->mtime;
 507
 508         if (src) {
 509                 src_need_scan = mh_scan_required(src->folder, src);
 510                 last_src_mtime = src->mtime;
 511         }
 512
 513         total = g_slist_length(msglist);
 514         if (total > 100) {
 515                 if (MSG_IS_MOVE(msginfo->flags))
 516                         statusbar_print_all(_("Moving messages..."));
 517                 else
 518                         statusbar_print_all(_("Copying messages..."));
 519         }
 520         for (cur = msglist; cur; cur = cur->next) {
 521                 msginfo = (MsgInfo *)cur->data;
 522                 if (!msginfo) {
 523                         goto err_reset_status;
 524                 }
 525                 if (!full_fetch) {
 526                         srcfile = g_strconcat(srcpath,
 527                                 G_DIR_SEPARATOR_S,
 528                                 itos(msginfo->msgnum), NULL);
 529                 } else {
 530                         srcfile = procmsg_get_message_file(msginfo);
 531                 }
 532                 if (!srcfile) {
 533                         goto err_reset_status;
 534                 }
 535                 destfile = mh_get_new_msg_filename(dest);
 536                 if (!destfile) {
 537                         g_free(srcfile);
 538                         goto err_reset_status;
 539                 }
 540
 541                 if (total > 100) {
 542                         statusbar_progress_all(curnum, total, 100);
 543                         if (curnum % 100 == 0)
 544                                 GTK_EVENTS_FLUSH();
 545                         curnum++;
 546                 }
 547
 548                 debug_print("Copying message %s%c%d to %s ...\n",
 549                             msginfo->folder->path, G_DIR_SEPARATOR,
 550                             msginfo->msgnum, dest->path);
 551
 552
 553                 if (MSG_IS_MOVE(msginfo->flags)) {
 554                         msginfo->flags.tmp_flags &= ~MSG_MOVE_DONE;
 555                         if (move_file(srcfile, destfile, TRUE) < 0) {
 556                                 FILE_OP_ERROR(srcfile, "move");
 557                                 if (copy_file(srcfile, destfile, TRUE) < 0) {
 558                                         FILE_OP_ERROR(srcfile, "copy");
 559                                         g_free(srcfile);
 560                                         g_free(destfile);
 561                                         goto err_reset_status;
 562                                 }
 563                         } else {
 564                                 /* say unlinking's not necessary */
 565                                 msginfo->flags.tmp_flags |= MSG_MOVE_DONE;
 566                         }
 567                 } else if (copy_file(srcfile, destfile, TRUE) < 0) {
 568                         FILE_OP_ERROR(srcfile, "copy");
 569                         g_free(srcfile);
 570                         g_free(destfile);
 571                         goto err_reset_status;
 572                 }
 573                 if (prefs && prefs->enable_folder_chmod && prefs->folder_chmod) {
 574                         if (chmod(destfile, prefs->folder_chmod) < 0)
 575                                 FILE_OP_ERROR(destfile, "chmod");
 576
 577                         /* for mark file */
 578                         filemode = prefs->folder_chmod;
 579                         if (filemode & S_IRGRP) filemode |= S_IWGRP;
 580                         if (filemode & S_IROTH) filemode |= S_IWOTH;
 581                 }
 582                 if (relation) {
 583                         if (g_hash_table_lookup(relation, msginfo) != NULL)
 584                                 g_warning("already in : %p", msginfo);
 585
 586                         g_hash_table_insert(relation, msginfo, GINT_TO_POINTER(dest->last_num+1));
 587                 }
 588                 g_free(srcfile);
 589                 g_free(destfile);
 590                 dest->last_num++;
 591         }
 592
 593         g_free(srcpath);
 594         mh_write_sequences(dest, TRUE);
 595
 596         if (dest->mtime == last_dest_mtime && !dest_need_scan) {
 597                 mh_set_mtime(folder, dest);
 598         }
 599
 600         if (src && src->mtime == last_src_mtime && !src_need_scan) {
 601                 mh_set_mtime(folder, src);
 602         }
 603
 604         if (total > 100) {
 605                 statusbar_progress_all(0,0,0);
 606                 statusbar_pop_all();
 607         }
 608         return dest->last_num;
 609 err_reset_status:
 610         g_free(srcpath);
 611         mh_write_sequences(dest, TRUE);
 612         if (total > 100) {
 613                 statusbar_progress_all(0,0,0);
 614                 statusbar_pop_all();
 615         }
 616         return -1;
 617
 618 }
 619
 620 static gint mh_remove_msg(Folder *folder, FolderItem *item, gint num)
 621 {
 622         gboolean need_scan = FALSE;
 623         time_t last_mtime = (time_t)0;
 624         gchar *file;
 625
 626         cm_return_val_if_fail(item != NULL, -1);
 627
 628         file = mh_fetch_msg(folder, item, num);
 629         cm_return_val_if_fail(file != NULL, -1);
 630
 631         need_scan = mh_scan_required(folder, item);
 632         last_mtime = item->mtime;
 633
 634         if (claws_unlink(file) < 0) {
 635                 FILE_OP_ERROR(file, "unlink");
 636                 g_free(file);
 637                 return -1;
 638         }
 639
 640         if (item->mtime == last_mtime && !need_scan) {
 641                 mh_set_mtime(folder, item);
 642         }
 643         g_free(file);
 644         return 0;
 645 }
 646
 647 static gint mh_remove_msgs(Folder *folder, FolderItem *item,
 648                     MsgInfoList *msglist, GHashTable *relation)
 649 {
 650         gboolean need_scan = FALSE;
 651         gchar *path, *file;
 652         time_t last_mtime = (time_t)0;
 653         MsgInfoList *cur;
 654         gint total = 0, curnum = 0;
 655
 656         cm_return_val_if_fail(item != NULL, -1);
 657
 658         path = folder_item_get_path(item);
 659
 660         need_scan = mh_scan_required(folder, item);
 661         last_mtime = item->mtime;
 662
 663         total = g_slist_length(msglist);
 664         if (total > 100) {
 665                 statusbar_print_all(_("Deleting messages..."));
 666         }
 667
 668         for (cur = msglist; cur; cur = cur->next) {
 669                 MsgInfo *msginfo = (MsgInfo *)cur->data;
 670                 if (msginfo == NULL)
 671                         continue;
 672                 if (MSG_IS_MOVE(msginfo->flags) && MSG_IS_MOVE_DONE(msginfo->flags)) {
 673                         msginfo->flags.tmp_flags &= ~MSG_MOVE_DONE;
 674                         continue;
 675                 }
 676                 if (total > 100) {
 677                         statusbar_progress_all(curnum, total, 100);
 678                         if (curnum % 100 == 0)
 679                                 GTK_EVENTS_FLUSH();
 680                         curnum++;
 681                 }
 682
 683                 file = g_strconcat(path, G_DIR_SEPARATOR_S, itos(msginfo->msgnum), NULL);
 684                 if (file == NULL)
 685                         continue;
 686
 687                 if (claws_unlink(file) < 0) {
 688                         g_free(file);
 689                         continue;
 690                 }
 691
 692                 g_free(file);
 693         }
 694
 695         if (total > 100) {
 696                 statusbar_progress_all(0,0,0);
 697                 statusbar_pop_all();
 698         }
 699         if (item->mtime == last_mtime && !need_scan) {
 700                 mh_set_mtime(folder, item);
 701         }
 702
 703         g_free(path);
 704         return 0;
 705 }
 706
 707 static gint mh_remove_all_msg(Folder *folder, FolderItem *item)
 708 {
 709         gchar *path;
 710         gint val;
 711
 712         cm_return_val_if_fail(item != NULL, -1);
 713
 714         path = folder_item_get_path(item);
 715         cm_return_val_if_fail(path != NULL, -1);
 716         val = remove_all_numbered_files(path);
 717         g_free(path);
 718
 719         mh_write_sequences(item, TRUE);
 720
 721         return val;
 722 }
 723
 724 static gboolean mh_is_msg_changed(Folder *folder, FolderItem *item,
 725                                   MsgInfo *msginfo)
 726 {
 727         struct stat s;
 728
 729         if (g_stat(itos(msginfo->msgnum), &s) < 0 ||
 730             msginfo->size  != s.st_size || (
 731                 (msginfo->mtime - s.st_mtime != 0) &&
 732                 (msginfo->mtime - s.st_mtime != 3600) &&
 733                 (msginfo->mtime - s.st_mtime != -3600)))
 734                 return TRUE;
 735
 736         return FALSE;
 737 }
 738
 739 static gint mh_scan_tree(Folder *folder)
 740 {
 741         FolderItem *item;
 742         gchar *rootpath;
 743
 744         cm_return_val_if_fail(folder != NULL, -1);
 745
 746         if (!folder->node) {
 747                 item = folder_item_new(folder, folder->name, NULL);
 748                 item->folder = folder;
 749                 folder->node = item->node = g_node_new(item);
 750         } else
 751                 item = FOLDER_ITEM(folder->node->data);
 752
 753         rootpath = folder_item_get_path(item);
 754         if (change_dir(rootpath) < 0) {
 755                 g_free(rootpath);
 756                 return -1;
 757         }
 758         g_free(rootpath);
 759
 760         mh_create_tree(folder);
 761         mh_remove_missing_folder_items(folder);
 762         mh_scan_tree_recursive(item);
 763
 764         return 0;
 765 }
 766
 767 #define MAKE_DIR_IF_NOT_EXIST(dir) \
 768 { \
 769         if (!is_dir_exist(dir)) { \
 770                 if (is_file_exist(dir)) { \
 771                         g_warning("File `%s' already exists.\n" \
 772                                     "Can't create folder.", dir); \
 773                         return -1; \
 774                 } \
 775                 if (make_dir_hier(dir) < 0) \
 776                         return -1; \
 777         } \
 778 }
 779
 780 static gint mh_create_tree(Folder *folder)
 781 {
 782         gchar *rootpath, *f;
 783
 784         cm_return_val_if_fail(folder != NULL, -1);
 785
 786         CHDIR_RETURN_VAL_IF_FAIL(get_mail_base_dir(), -1);
 787         rootpath = LOCAL_FOLDER(folder)->rootpath;
 788         MAKE_DIR_IF_NOT_EXIST(rootpath);
 789         CHDIR_RETURN_VAL_IF_FAIL(rootpath, -1);
 790
 791         /* Create special directories as needed */
 792         if (folder->inbox != NULL &&
 793                         folder->inbox->path != NULL)
 794                 f = folder->inbox->path;
 795         else
 796                 f = INBOX_DIR;
 797         MAKE_DIR_IF_NOT_EXIST(f);
 798
 799         if (folder->outbox != NULL &&
 800                         folder->outbox->path != NULL)
 801                 f = folder->outbox->path;
 802         else
 803                 f = OUTBOX_DIR;
 804         MAKE_DIR_IF_NOT_EXIST(f);
 805
 806         if (folder->draft != NULL &&
 807                         folder->draft->path != NULL)
 808                 f = folder->draft->path;
 809         else
 810                 f = DRAFT_DIR;
 811         MAKE_DIR_IF_NOT_EXIST(f);
 812
 813         if (folder->queue != NULL &&
 814                         folder->queue->path != NULL)
 815                 f = folder->queue->path;
 816         else
 817                 f = QUEUE_DIR;
 818         MAKE_DIR_IF_NOT_EXIST(f);
 819
 820         if (folder->trash != NULL &&
 821                         folder->trash->path != NULL)
 822                 f = folder->trash->path;
 823         else
 824                 f = TRASH_DIR;
 825         MAKE_DIR_IF_NOT_EXIST(f);
 826
 827         return 0;
 828 }
 829
 830 #undef MAKE_DIR_IF_NOT_EXIST
 831
 832 static gchar *mh_item_get_path(Folder *folder, FolderItem *item)
 833 {
 834         gchar *folder_path, *path;
 835         gchar *real_path;
 836         cm_return_val_if_fail(folder != NULL, NULL);
 837         cm_return_val_if_fail(item != NULL, NULL);
 838
 839         folder_path = g_strdup(LOCAL_FOLDER(folder)->rootpath);
 840         cm_return_val_if_fail(folder_path != NULL, NULL);
 841
 842         /* FIXME: [W32] The code below does not correctly merge
 843            relative filenames; there should be a function to handle
 844            this.  */
 845         if ( !is_relative_filename (folder_path) ) {
 846                 if (item->path)
 847                         path = g_strconcat(folder_path, G_DIR_SEPARATOR_S,
 848                                            item->path, NULL);
 849                 else
 850                         path = g_strdup(folder_path);
 851         } else {
 852                 if (item->path)
 853                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 854                                            folder_path, G_DIR_SEPARATOR_S,
 855                                            item->path, NULL);
 856                 else
 857                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 858                                            folder_path, NULL);
 859         }
 860         g_free(folder_path);
 861         real_path = mh_filename_from_utf8(path);
 862         if (!is_dir_exist(real_path) && is_dir_exist(path)) {
 863                 /* mmh, older version did put utf8 filenames instead of
 864                  * the correct encoding */
 865                 g_rename(path, real_path);
 866                 folder_item_scan(item);
 867         }
 868
 869         g_free(path);
 870         return real_path;
 871 }
 872
 873 static FolderItem *mh_create_folder(Folder *folder, FolderItem *parent,
 874                                     const gchar *name)
 875 {
 876         gchar *path, *real_name;
 877         gchar *fullpath;
 878         FolderItem *new_item;
 879         gchar *mh_sequences_filename;
 880         FILE *mh_sequences_file;
 881
 882         cm_return_val_if_fail(folder != NULL, NULL);
 883         cm_return_val_if_fail(parent != NULL, NULL);
 884         cm_return_val_if_fail(name != NULL, NULL);
 885
 886         path = folder_item_get_path(parent);
 887         if (!is_dir_exist(path))
 888                 if (make_dir_hier(path) != 0)
 889                         return NULL;
 890
 891         real_name = mh_filename_from_utf8(name);
 892         fullpath = g_strconcat(path, G_DIR_SEPARATOR_S, real_name, NULL);
 893         g_free(real_name);
 894         g_free(path);
 895
 896         if (make_dir(fullpath) < 0) {
 897                 g_free(fullpath);
 898                 return NULL;
 899         }
 900
 901         g_free(fullpath);
 902
 903         if (parent->path)
 904                 path = g_strconcat(parent->path, G_DIR_SEPARATOR_S, name,
 905                                    NULL);
 906         else
 907                 path = g_strdup(name);
 908         new_item = folder_item_new(folder, name, path);
 909         folder_item_append(parent, new_item);
 910
 911         g_free(path);
 912
 913         path = folder_item_get_path(new_item);
 914         mh_sequences_filename = g_strconcat(path, G_DIR_SEPARATOR_S,
 915                                             ".mh_sequences", NULL);
 916         if ((mh_sequences_file = g_fopen(mh_sequences_filename, "a+b")) != NULL) {
 917                 fclose(mh_sequences_file);
 918         }
 919         g_free(mh_sequences_filename);
 920         g_free(path);
 921
 922         return new_item;
 923 }
 924
 925 static gint mh_rename_folder(Folder *folder, FolderItem *item,
 926                              const gchar *name)
 927 {
 928         gchar *real_name;
 929         gchar *oldpath;
 930         gchar *dirname;
 931         gchar *newpath, *utf8newpath;
 932         gchar *paths[2];
 933
 934         cm_return_val_if_fail(folder != NULL, -1);
 935         cm_return_val_if_fail(item != NULL, -1);
 936         cm_return_val_if_fail(item->path != NULL, -1);
 937         cm_return_val_if_fail(name != NULL, -1);
 938
 939         oldpath = folder_item_get_path(item);
 940         if (!is_dir_exist(oldpath))
 941                 make_dir_hier(oldpath);
 942
 943         dirname = g_path_get_dirname(oldpath);
 944         real_name = mh_filename_from_utf8(name);
 945         newpath = g_strconcat(dirname, G_DIR_SEPARATOR_S, real_name, NULL);
 946         g_free(real_name);
 947
 948         if (g_rename(oldpath, newpath) < 0) {
 949                 FILE_OP_ERROR(oldpath, "rename");
 950                 g_free(oldpath);
 951                 g_free(newpath);
 952                 return -1;
 953         }
 954
 955         g_free(oldpath);
 956         g_free(newpath);
 957
 958         if (strchr(item->path, G_DIR_SEPARATOR) != NULL) {
 959                 dirname = g_path_get_dirname(item->path);
 960                 utf8newpath = g_strconcat(dirname, G_DIR_SEPARATOR_S,
 961                                           name, NULL);
 962                 g_free(dirname);
 963         } else
 964                 utf8newpath = g_strdup(name);
 965
 966         g_free(item->name);
 967         item->name = g_strdup(name);
 968
 969         paths[0] = g_strdup(item->path);
 970         paths[1] = utf8newpath;
 971         g_node_traverse(item->node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 972                         mh_rename_folder_func, paths);
 973
 974         g_free(paths[0]);
 975         g_free(paths[1]);
 976         return 0;
 977 }
 978
 979 static gint mh_remove_folder(Folder *folder, FolderItem *item)
 980 {
 981         gchar *path;
 982
 983         cm_return_val_if_fail(folder != NULL, -1);
 984         cm_return_val_if_fail(item != NULL, -1);
 985         cm_return_val_if_fail(item->path != NULL, -1);
 986
 987         path = folder_item_get_path(item);
 988         if (remove_dir_recursive(path) < 0) {
 989                 g_warning("can't remove directory `%s'\n", path);
 990                 g_free(path);
 991                 return -1;
 992         }
 993
 994         g_free(path);
 995         folder_item_remove(item);
 996         return 0;
 997 }
 998
 999 static MsgInfo *mh_parse_msg(const gchar *file, FolderItem *item)
1000 {
1001         MsgInfo *msginfo;
1002         MsgFlags flags;
1003
1004         cm_return_val_if_fail(item != NULL, NULL);
1005         cm_return_val_if_fail(file != NULL, NULL);
1006
1007         flags.perm_flags = MSG_NEW|MSG_UNREAD;
1008         flags.tmp_flags = 0;
1009
1010         if (folder_has_parent_of_type(item, F_QUEUE)) {
1011                 MSG_SET_TMP_FLAGS(flags, MSG_QUEUED);
1012         } else if (folder_has_parent_of_type(item, F_DRAFT)) {
1013                 MSG_SET_TMP_FLAGS(flags, MSG_DRAFT);
1014         }
1015
1016         msginfo = procheader_parse_file(file, flags, FALSE, FALSE);
1017         if (!msginfo) return NULL;
1018
1019         msginfo->msgnum = atoi(file);
1020         msginfo->folder = item;
1021
1022         return msginfo;
1023 }
1024
1025 static gboolean mh_remove_missing_folder_items_func(GNode *node, gpointer data)
1026 {
1027         FolderItem *item;
1028         gchar *path;
1029
1030         cm_return_val_if_fail(node->data != NULL, FALSE);
1031
1032         if (G_NODE_IS_ROOT(node))
1033                 return FALSE;
1034
1035         item = FOLDER_ITEM(node->data);
1036
1037         path = folder_item_get_path(item);
1038         if (!is_dir_exist(path)) {
1039                 debug_print("folder '%s' not found. removing...\n", path?path:"(null)");
1040                 folder_item_remove(item);
1041         }
1042         g_free(path);
1043
1044         return FALSE;
1045 }
1046
1047 static void mh_remove_missing_folder_items(Folder *folder)
1048 {
1049         cm_return_if_fail(folder != NULL);
1050
1051         debug_print("searching missing folders...\n");
1052
1053         g_node_traverse(folder->node, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1054                         mh_remove_missing_folder_items_func, folder);
1055 }
1056
1057 static void mh_scan_tree_recursive(FolderItem *item)
1058 {
1059         Folder *folder;
1060 #ifdef G_OS_WIN32
1061         GDir *dir;
1062 #else
1063         DIR *dp;
1064         struct dirent *d;
1065 #endif
1066         const gchar *dir_name;
1067         struct stat s;
1068         gchar *real_path, *entry, *utf8entry, *utf8name;
1069         gint n_msg = 0;
1070
1071         cm_return_if_fail(item != NULL);
1072         cm_return_if_fail(item->folder != NULL);
1073
1074         folder = item->folder;
1075
1076         real_path = item->path ? mh_filename_from_utf8(item->path) : g_strdup(".");
1077 #ifdef G_OS_WIN32
1078         dir = g_dir_open(real_path, 0, NULL);
1079         if (!dir) {
1080                 g_warning("failed to open directory: %s\n", real_path);
1081                 g_free(real_path);
1082                 return;
1083         }
1084 #else
1085         dp = opendir(real_path);
1086         if (!dp) {
1087                 FILE_OP_ERROR(real_path, "opendir");
1088                 return;
1089         }
1090 #endif
1091         g_free(real_path);
1092
1093         debug_print("scanning %s ...\n",
1094                     item->path ? item->path
1095                     : LOCAL_FOLDER(item->folder)->rootpath);
1096         if (folder->ui_func)
1097                 folder->ui_func(folder, item, folder->ui_func_data);
1098
1099 #ifdef G_OS_WIN32
1100         while ((dir_name = g_dir_read_name(dir)) != NULL) {
1101 #else
1102         while ((d = readdir(dp)) != NULL) {
1103                 dir_name = d->d_name;
1104 #endif
1105                 if (dir_name[0] == '.') continue;
1106
1107                 utf8name = mh_filename_to_utf8(dir_name);
1108                 if (item->path)
1109                         utf8entry = g_strconcat(item->path, G_DIR_SEPARATOR_S,
1110                                                 utf8name, NULL);
1111                 else
1112                         utf8entry = g_strdup(utf8name);
1113                 entry = mh_filename_from_utf8(utf8entry);
1114
1115                 if (
1116 #if !defined(G_OS_WIN32) && !defined(MAEMO) && defined(HAVE_DIRENT_D_TYPE)
1117                         d->d_type == DT_DIR ||
1118                         (d->d_type == DT_UNKNOWN &&
1119 #endif
1120                         g_stat(entry, &s) == 0 && S_ISDIR(s.st_mode)
1121 #if !defined(G_OS_WIN32) && !defined(MAEMO) && defined(HAVE_DIRENT_D_TYPE)
1122                         )
1123 #endif
1124                    ) {
1125                         FolderItem *new_item = NULL;
1126                         GNode *node;
1127
1128                         node = item->node;
1129                         for (node = node->children; node != NULL; node = node->next) {
1130                                 FolderItem *cur_item = FOLDER_ITEM(node->data);
1131                                 gchar *curpath = mh_filename_from_utf8(cur_item->path);
1132                                 if (!strcmp2(curpath, entry)) {
1133                                         new_item = cur_item;
1134                                         g_free(curpath);
1135                                         break;
1136                                 }
1137                                 g_free(curpath);
1138                         }
1139                         if (!new_item) {
1140                                 debug_print("new folder '%s' found.\n", entry);
1141                                 new_item = folder_item_new(folder, utf8name, utf8entry);
1142                                 folder_item_append(item, new_item);
1143                         }
1144
1145                         if (!item->path) {
1146                                 if (!folder->inbox &&
1147                                     !strcmp(dir_name, INBOX_DIR)) {
1148                                         new_item->stype = F_INBOX;
1149                                         folder->inbox = new_item;
1150                                 } else if (!folder->outbox &&
1151                                            !strcmp(dir_name, OUTBOX_DIR)) {
1152                                         new_item->stype = F_OUTBOX;
1153                                         folder->outbox = new_item;
1154                                 } else if (!folder->draft &&
1155                                            !strcmp(dir_name, DRAFT_DIR)) {
1156                                         new_item->stype = F_DRAFT;
1157                                         folder->draft = new_item;
1158                                 } else if (!folder->queue &&
1159                                            !strcmp(dir_name, QUEUE_DIR)) {
1160                                         new_item->stype = F_QUEUE;
1161                                         folder->queue = new_item;
1162                                 } else if (!folder->trash &&
1163                                            !strcmp(dir_name, TRASH_DIR)) {
1164                                         new_item->stype = F_TRASH;
1165                                         folder->trash = new_item;
1166                                 }
1167                         }
1168
1169                         mh_scan_tree_recursive(new_item);
1170                 } else if (to_number(dir_name) > 0) n_msg++;
1171
1172                 g_free(entry);
1173                 g_free(utf8entry);
1174                 g_free(utf8name);
1175         }
1176
1177 #ifdef G_OS_WIN32
1178         g_dir_close(dir);
1179 #else
1180         closedir(dp);
1181 #endif
1182
1183         mh_set_mtime(folder, item);
1184 }
1185
1186 static gboolean mh_rename_folder_func(GNode *node, gpointer data)
1187 {
1188         FolderItem *item = node->data;
1189         gchar **paths = data;
1190         const gchar *oldpath = paths[0];
1191         const gchar *newpath = paths[1];
1192         gchar *base;
1193         gchar *new_itempath;
1194         gint oldpathlen;
1195
1196         oldpathlen = strlen(oldpath);
1197         if (strncmp(oldpath, item->path, oldpathlen) != 0) {
1198                 g_warning("path doesn't match: %s, %s\n", oldpath, item->path);
1199                 return TRUE;
1200         }
1201
1202         base = item->path + oldpathlen;
1203         while (*base == G_DIR_SEPARATOR) base++;
1204         if (*base == '\0')
1205                 new_itempath = g_strdup(newpath);
1206         else
1207                 new_itempath = g_strconcat(newpath, G_DIR_SEPARATOR_S, base,
1208                                            NULL);
1209         g_free(item->path);
1210         item->path = new_itempath;
1211
1212         return FALSE;
1213 }
1214
1215 static gchar *mh_filename_from_utf8(const gchar *path)
1216 {
1217         gchar *real_path = g_filename_from_utf8(path, -1, NULL, NULL, NULL);
1218
1219         if (!real_path) {
1220                 g_warning("mh_filename_from_utf8: failed to convert character set\n");
1221                 real_path = g_strdup(path);
1222         }
1223
1224         return real_path;
1225 }
1226
1227 static gchar *mh_filename_to_utf8(const gchar *path)
1228 {
1229         gchar *utf8path = g_filename_to_utf8(path, -1, NULL, NULL, NULL);
1230         if (!utf8path) {
1231                 g_warning("mh_filename_to_utf8: failed to convert character set\n");
1232                 utf8path = g_strdup(path);
1233         }
1234
1235         return utf8path;
1236 }
1237
1238 static gint sort_cache_list_by_msgnum(gconstpointer a, gconstpointer b)
1239 {
1240         MsgInfo *msginfo_a = (MsgInfo *) a;
1241         MsgInfo *msginfo_b = (MsgInfo *) b;
1242
1243         return (msginfo_a->msgnum - msginfo_b->msgnum);
1244 }
1245
1246 static gchar *get_unseen_seq_name(void)
1247 {
1248         static gchar *seq_name = NULL;
1249         if (!seq_name) {
1250                 gchar buf[BUFFSIZE];
1251                 gchar *tmp;
1252                 gchar *profile_path = g_strconcat(
1253                         get_home_dir(), G_DIR_SEPARATOR_S,
1254                         ".mh_profile", NULL);
1255                 FILE *fp = g_fopen(profile_path, "r");
1256                 if (fp) {
1257                         while (fgets(buf, sizeof(buf), fp) != NULL) {
1258                                 if (!strncmp(buf, "Unseen-Sequence:", strlen("Unseen-Sequence:"))) {
1259                                         gchar *seq_tmp = buf+strlen("Unseen-Sequence:");
1260                                         while (*seq_tmp == ' ')
1261                                                 seq_tmp++;
1262                                         seq_name = g_strdup(seq_tmp);
1263                                         seq_name = strretchomp(seq_name);
1264                                         break;
1265                                 }
1266                         }
1267                         fclose(fp);
1268                 }
1269                 if (!seq_name)
1270                         seq_name = g_strdup("unseen");
1271                 tmp = g_strdup_printf("%s:", seq_name);
1272                 g_free(seq_name);
1273                 seq_name = tmp;
1274         }
1275         return seq_name;
1276 }
1277
1278 static void mh_write_sequences(FolderItem *item, gboolean remove_unseen)
1279 {
1280         gchar *mh_sequences_old, *mh_sequences_new;
1281         FILE *mh_sequences_old_fp, *mh_sequences_new_fp;
1282         gchar buf[BUFFSIZE];
1283         gchar *path = NULL;
1284         gboolean err = FALSE;
1285         START_TIMING("");
1286
1287         if (!item)
1288                 return;
1289
1290         path = folder_item_get_path(item);
1291
1292         mh_sequences_old = g_strconcat(path, G_DIR_SEPARATOR_S,
1293                                             ".mh_sequences", NULL);
1294         mh_sequences_new = g_strconcat(path, G_DIR_SEPARATOR_S,
1295                                             ".mh_sequences.new", NULL);
1296         if ((mh_sequences_new_fp = g_fopen(mh_sequences_new, "w+b")) != NULL) {
1297                 GSList *msglist = folder_item_get_msg_list(item);
1298                 GSList *cur;
1299                 MsgInfo *info = NULL;
1300                 gint start = -1, end = -1;
1301                 gchar *sequence = g_strdup("");
1302                 gint seq_len = 0;
1303                 msglist = g_slist_sort(msglist, sort_cache_list_by_msgnum);
1304                 cur = msglist;
1305
1306                 /* write the unseen sequence if we don't have to scrap it */
1307                 if (!remove_unseen) do {
1308                         info = (MsgInfo *)(cur ? cur->data:NULL);
1309                         if (info && (MSG_IS_UNREAD(info->flags) || MSG_IS_NEW(info->flags))) {
1310                                 if (start < 0)
1311                                         start = end = info->msgnum;
1312                                 else
1313                                         end = info->msgnum;
1314                         } else {
1315                                 if (start > 0 && end > 0) {
1316                                         gchar tmp[32];
1317                                         gint tmp_len = 0;
1318                                         if (start != end)
1319                                                 snprintf(tmp, 31, " %d-%d", start, end);
1320                                         else
1321                                                 snprintf(tmp, 31, " %d", start);
1322
1323                                         tmp_len = strlen(tmp);
1324                                         sequence = g_realloc(sequence, seq_len+tmp_len+1);
1325                                         strcpy(sequence+seq_len, tmp);
1326                                         seq_len += tmp_len;
1327
1328                                         start = end = -1;
1329                                 }
1330                         }
1331                         cur = cur ? cur->next:NULL;
1332                 } while (cur || (start > 0 && end > 0));
1333                 if (sequence && *sequence) {
1334                         if (fprintf(mh_sequences_new_fp, "%s%s\n",
1335                                         get_unseen_seq_name(), sequence) < 0)
1336                                 err = TRUE;
1337                         else
1338                                 debug_print("wrote unseen sequence: '%s%s'\n",
1339                                         get_unseen_seq_name(), sequence);
1340                 }
1341                 /* rewrite the rest of the file */
1342                 if ((mh_sequences_old_fp = g_fopen(mh_sequences_old, "r+b")) != NULL) {
1343                         while (fgets(buf, sizeof(buf), mh_sequences_old_fp) != NULL) {
1344                                 if (strncmp(buf, get_unseen_seq_name(), strlen(get_unseen_seq_name())))
1345                                         if (fprintf(mh_sequences_new_fp, "%s", buf) < 0) {
1346                                                 err = TRUE;
1347                                                 break;
1348                                         }
1349                         }
1350                         fclose(mh_sequences_old_fp);
1351                 }
1352
1353                 fflush(mh_sequences_new_fp);
1354 #if 0
1355                 fsync(fileno(mh_sequences_new_fp));
1356 #endif
1357                 if (fclose(mh_sequences_new_fp) == EOF)
1358                         err = TRUE;
1359
1360                 if (!err)
1361                         g_rename(mh_sequences_new, mh_sequences_old);
1362                 g_free(sequence);
1363                 procmsg_msg_list_free(msglist);
1364         }
1365         g_free(mh_sequences_old);
1366         g_free(mh_sequences_new);
1367         g_free(path);
1368
1369         END_TIMING();
1370 }
1371
1372 static int mh_item_close(Folder *folder, FolderItem *item)
1373 {
1374         time_t last_mtime = (time_t)0;
1375         gboolean need_scan = mh_scan_required(item->folder, item);
1376         last_mtime = item->mtime;
1377
1378         mh_write_sequences(item, FALSE);
1379
1380         if (item->mtime == last_mtime && !need_scan) {
1381                 mh_set_mtime(folder, item);
1382         }
1383
1384         return 0;
1385 }
1386
1387 static void mh_set_mtime(Folder *folder, FolderItem *item)
1388 {
1389         struct stat s;
1390         gchar *path = folder_item_get_path(item);
1391
1392         cm_return_if_fail(path != NULL);
1393
1394         if (g_stat(path, &s) < 0) {
1395                 FILE_OP_ERROR(path, "stat");
1396                 g_free(path);
1397                 return;
1398         }
1399
1400         item->mtime = s.st_mtime;
1401         debug_print("MH: forced mtime of %s to %ld\n", item->name?item->name:"(null)", item->mtime);
1402         g_free(path);
1403 }