Made the gnutls password encryption work on Win32.
[claws.git] / src / mh.c
1 /*
2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
3  * Copyright (C) 1999-2013 Hiroyuki Yamamoto and the Claws Mail team
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation; either version 3 of the License, or
8  * (at your option) any later version.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program. If not, see <http://www.gnu.org/licenses/>.
17  * 
18  */
19
20 #ifdef HAVE_CONFIG_H
21 #  include "config.h"
22 #include "claws-features.h"
23 #endif
24
25 #include "defs.h"
26
27 #include <glib.h>
28 #include <glib/gi18n.h>
29 #include <dirent.h>
30 #include <sys/stat.h>
31 #include <unistd.h>
32 #include <string.h>
33 #include <errno.h>
34 #include <time.h>
35
36 #include "folder.h"
37 #include "folder_item_prefs.h"
38 #include "mh.h"
39 #include "procmsg.h"
40 #include "procheader.h"
41 #include "utils.h"
42 #include "codeconv.h"
43 #include "statusbar.h"
44 #include "gtkutils.h"
45 #include "timing.h"
46 #include "msgcache.h"
47
48 /* Define possible missing constants for Windows. */
49 #ifdef G_OS_WIN32
50 # ifndef S_IRGRP
51 # define S_IRGRP 0
52 # define S_IWGRP 0
53 # endif
54 # ifndef S_IROTH
55 # define S_IROTH 0
56 # define S_IWOTH 0
57 # endif
58 #endif
59
60
61 static void     mh_folder_init          (Folder         *folder,
62                                          const gchar    *name,
63                                          const gchar    *path);
64
65 static Folder   *mh_folder_new          (const gchar    *name,
66                                          const gchar    *path);
67 static void     mh_folder_destroy       (Folder         *folder);
68 static gchar   *mh_fetch_msg            (Folder         *folder,
69                                          FolderItem     *item,
70                                          gint            num);
71 static MsgInfo *mh_get_msginfo          (Folder         *folder,
72                                          FolderItem     *item,
73                                          gint            num);
74 static gint     mh_add_msg              (Folder         *folder,
75                                          FolderItem     *dest,
76                                          const gchar    *file,
77                                          MsgFlags       *flags);
78 static gint     mh_add_msgs             (Folder         *folder,
79                                          FolderItem     *dest,
80                                          GSList         *file_list,
81                                          GHashTable     *relation);
82 static gint     mh_copy_msg             (Folder         *folder,
83                                          FolderItem     *dest,
84                                          MsgInfo        *msginfo);
85 static gint     mh_copy_msgs            (Folder         *folder, 
86                                          FolderItem     *dest, 
87                                          MsgInfoList    *msglist, 
88                                          GHashTable     *relation);
89 static gint     mh_remove_msg           (Folder         *folder,
90                                          FolderItem     *item,
91                                          gint            num);
92 static gint     mh_remove_msgs          (Folder         *folder, 
93                                          FolderItem     *item, 
94                                          MsgInfoList    *msglist, 
95                                          GHashTable     *relation);
96 static gint     mh_remove_all_msg       (Folder         *folder,
97                                          FolderItem     *item);
98 static gboolean mh_is_msg_changed       (Folder         *folder,
99                                          FolderItem     *item,
100                                          MsgInfo        *msginfo);
101
102 static gint     mh_get_num_list         (Folder         *folder,
103                                          FolderItem     *item, 
104                                          GSList         **list, 
105                                          gboolean       *old_uids_valid);
106 static gint     mh_scan_tree            (Folder         *folder);
107
108 static gint    mh_create_tree           (Folder         *folder);
109 static FolderItem *mh_create_folder     (Folder         *folder,
110                                          FolderItem     *parent,
111                                          const gchar    *name);
112 static gint    mh_rename_folder         (Folder         *folder,
113                                          FolderItem     *item,
114                                          const gchar    *name);
115 static gint    mh_remove_folder         (Folder         *folder,
116                                          FolderItem     *item);
117
118 static gchar   *mh_get_new_msg_filename         (FolderItem     *dest);
119
120 static MsgInfo *mh_parse_msg                    (const gchar    *file,
121                                                  FolderItem     *item);
122 static void     mh_remove_missing_folder_items  (Folder         *folder);
123 static gchar    *mh_filename_from_utf8          (const gchar    *path);
124 static gchar    *mh_filename_to_utf8            (const gchar    *path);
125 static void     mh_scan_tree_recursive          (FolderItem     *item);
126
127 static gboolean mh_rename_folder_func           (GNode          *node,
128                                                  gpointer        data);
129 static gchar   *mh_item_get_path                (Folder *folder, 
130                                                  FolderItem *item);
131
132 static gboolean mh_scan_required        (Folder         *folder,
133                                          FolderItem     *item);
134 static void mh_set_mtime                (Folder         *folder,
135                                          FolderItem *item);
136 static int mh_item_close                (Folder         *folder,
137                                          FolderItem     *item);
138 #if 0
139 static gint mh_get_flags                (Folder *folder, FolderItem *item,
140                                          MsgInfoList *msginfo_list, GHashTable *msgflags);
141 #endif
142 static void mh_write_sequences          (FolderItem     *item, gboolean remove_unseen);
143
144 static FolderClass mh_class;
145
146 FolderClass *mh_get_class(void)
147 {
148         if (mh_class.idstr == NULL) {
149                 mh_class.type = F_MH;
150                 mh_class.idstr = "mh";
151                 mh_class.uistr = "MH";
152                 mh_class.supports_server_search = FALSE;
153                 
154                 /* Folder functions */
155                 mh_class.new_folder = mh_folder_new;
156                 mh_class.destroy_folder = mh_folder_destroy;
157                 mh_class.set_xml = folder_local_set_xml;
158                 mh_class.get_xml = folder_local_get_xml;
159                 mh_class.scan_tree = mh_scan_tree;
160                 mh_class.create_tree = mh_create_tree;
161
162                 /* FolderItem functions */
163                 mh_class.item_get_path = mh_item_get_path;
164                 mh_class.create_folder = mh_create_folder;
165                 mh_class.rename_folder = mh_rename_folder;
166                 mh_class.remove_folder = mh_remove_folder;
167                 mh_class.get_num_list = mh_get_num_list;
168                 mh_class.scan_required = mh_scan_required;
169                 mh_class.set_mtime = mh_set_mtime;
170                 mh_class.close = mh_item_close;
171                 mh_class.get_flags = NULL; /*mh_get_flags */;
172
173                 /* Message functions */
174                 mh_class.get_msginfo = mh_get_msginfo;
175                 mh_class.fetch_msg = mh_fetch_msg;
176                 mh_class.add_msg = mh_add_msg;
177                 mh_class.add_msgs = mh_add_msgs;
178                 mh_class.copy_msg = mh_copy_msg;
179                 mh_class.copy_msgs = mh_copy_msgs;
180                 mh_class.search_msgs = folder_item_search_msgs_local;
181                 mh_class.remove_msg = mh_remove_msg;
182                 mh_class.remove_msgs = mh_remove_msgs;
183                 mh_class.remove_all_msg = mh_remove_all_msg;
184                 mh_class.is_msg_changed = mh_is_msg_changed;
185         }
186
187         return &mh_class;
188 }
189
190 static Folder *mh_folder_new(const gchar *name, const gchar *path)
191 {
192         Folder *folder;
193
194         folder = (Folder *)g_new0(MHFolder, 1);
195         folder->klass = &mh_class;
196         mh_folder_init(folder, name, path);
197
198         return folder;
199 }
200
201 static void mh_folder_destroy(Folder *folder)
202 {
203         folder_local_folder_destroy(LOCAL_FOLDER(folder));
204 }
205
206 static void mh_folder_init(Folder *folder, const gchar *name, const gchar *path)
207 {
208         folder_local_folder_init(folder, name, path);
209
210 }
211
212 gboolean mh_scan_required(Folder *folder, FolderItem *item)
213 {
214         gchar *path;
215         GStatBuf s;
216
217         path = folder_item_get_path(item);
218         cm_return_val_if_fail(path != NULL, FALSE);
219
220         if (g_stat(path, &s) < 0) {
221                 FILE_OP_ERROR(path, "stat");
222                 g_free(path);
223                 return FALSE;
224         }
225
226         if ((s.st_mtime > item->mtime) &&
227                 (s.st_mtime - 3600 != item->mtime)) {
228                 debug_print("MH scan required, folder updated: %s (%ld > %ld)\n",
229                             path?path:"(null)",
230                             (long int) s.st_mtime,
231                             (long int) item->mtime);
232                 g_free(path);
233                 return TRUE;
234         }
235
236         debug_print("MH scan not required: %s (%ld <= %ld)\n",
237                     path?path:"(null)",
238                     (long int) s.st_mtime,
239                     (long int) item->mtime);
240         g_free(path);
241         return FALSE;
242 }
243
244 static void mh_get_last_num(Folder *folder, FolderItem *item)
245 {
246         gchar *path, *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_message("Couldn't open current directory: %s (%d).\n",
262                                 error->message, error->code);
263                 g_error_free(error);
264                 g_free(path);
265                 return;
266         }
267
268         while ((d = g_dir_read_name(dp)) != NULL) {
269                 fullpath = g_strconcat(path, G_DIR_SEPARATOR_S, d, NULL);
270                 if ((num = to_number(d)) > 0 &&
271                     g_file_test(fullpath, G_FILE_TEST_IS_REGULAR)) {
272                         if (max < num)
273                                 max = num;
274                 }
275                 g_free(fullpath);
276
277                 if (num % 2000 == 0)
278                         GTK_EVENTS_FLUSH();
279         }
280         g_dir_close(dp);
281         g_free(path);
282
283         debug_print("Last number in dir %s = %d\n", item->path?item->path:"(null)", max);
284         item->last_num = max;
285 }
286
287 gint mh_get_num_list(Folder *folder, FolderItem *item, GSList **list, gboolean *old_uids_valid)
288 {
289
290         gchar *path;
291         GDir *dp;
292         const gchar *d;
293         GError *error = NULL;
294         gint num, nummsgs = 0;
295
296         cm_return_val_if_fail(item != NULL, -1);
297
298         debug_print("mh_get_num_list(): Scanning %s ...\n", item->path?item->path:"(null)");
299
300         *old_uids_valid = TRUE;
301
302         path = folder_item_get_path(item);
303         cm_return_val_if_fail(path != NULL, -1);
304
305         if ((dp = g_dir_open(path, 0, &error)) == NULL) {
306                 g_message("Couldn't open current directory: %s (%d).\n",
307                                 error->message, error->code);
308                 g_error_free(error);
309                 g_free(path);
310                 return -1;
311         }
312         g_free(path);
313
314         while ((d = g_dir_read_name(dp)) != NULL) {
315                 if ((num = to_number(d)) > 0) {
316                         *list = g_slist_prepend(*list, GINT_TO_POINTER(num));
317                         nummsgs++;
318                 }
319         }
320         g_dir_close(dp);
321
322         mh_set_mtime(folder, item);
323         return nummsgs;
324 }
325
326 static gchar *mh_fetch_msg(Folder *folder, FolderItem *item, gint num)
327 {
328         gchar *path;
329         gchar *file;
330
331         cm_return_val_if_fail(item != NULL, NULL);
332         cm_return_val_if_fail(num > 0, NULL);
333
334         path = folder_item_get_path(item);
335         file = g_strconcat(path, G_DIR_SEPARATOR_S, itos(num), NULL);
336
337         if (!is_file_exist(file)) {
338                 g_free(file);
339                 g_free(path);
340                 return NULL;
341         }
342         g_free(path);
343         return file;
344 }
345
346 static MsgInfo *mh_get_msginfo(Folder *folder, FolderItem *item, gint num)
347 {
348         MsgInfo *msginfo;
349         gchar *file;
350
351         cm_return_val_if_fail(item != NULL, NULL);
352         if (num <= 0)
353                 return NULL;
354
355         file = mh_fetch_msg(folder, item, num);
356         if (!file) return NULL;
357
358         msginfo = mh_parse_msg(file, item);
359         if (msginfo)
360                 msginfo->msgnum = num;
361
362         g_free(file);
363
364         return msginfo;
365 }
366
367 static gchar *mh_get_new_msg_filename(FolderItem *dest)
368 {
369         gchar *destfile;
370         gchar *destpath;
371
372         destpath = folder_item_get_path(dest);
373         cm_return_val_if_fail(destpath != NULL, NULL);
374
375         if (dest->last_num < 0) {
376                 mh_get_last_num(dest->folder, dest);
377                 if (dest->last_num < 0) return NULL;
378         }
379
380         if (!is_dir_exist(destpath))
381                 make_dir_hier(destpath);
382
383         for (;;) {
384                 destfile = g_strdup_printf("%s%c%d", destpath, G_DIR_SEPARATOR,
385                                            dest->last_num + 1);
386                 if (is_file_entry_exist(destfile)) {
387                         dest->last_num++;
388                         g_free(destfile);
389                 } else
390                         break;
391         }
392
393         g_free(destpath);
394
395         return destfile;
396 }
397
398 static gint mh_add_msg(Folder *folder, FolderItem *dest, const gchar *file, MsgFlags *flags)
399 {
400         gint ret;
401         GSList file_list;
402         MsgFileInfo fileinfo;
403
404         cm_return_val_if_fail(file != NULL, -1);
405
406         fileinfo.msginfo = NULL;
407         fileinfo.file = (gchar *)file;
408         fileinfo.flags = flags;
409         file_list.data = &fileinfo;
410         file_list.next = NULL;
411
412         ret = mh_add_msgs(folder, dest, &file_list, NULL);
413         return ret;
414
415  
416 static gint mh_add_msgs(Folder *folder, FolderItem *dest, GSList *file_list, 
417                  GHashTable *relation)
418
419         gchar *destfile;
420         GSList *cur;
421         MsgFileInfo *fileinfo;
422
423         cm_return_val_if_fail(dest != NULL, -1);
424         cm_return_val_if_fail(file_list != NULL, -1);
425
426         if (dest->last_num < 0) {
427                 mh_get_last_num(folder, dest);
428                 if (dest->last_num < 0) return -1;
429         }
430
431         for (cur = file_list; cur != NULL; cur = cur->next) {
432                 fileinfo = (MsgFileInfo *)cur->data;
433
434                 destfile = mh_get_new_msg_filename(dest);
435                 if (destfile == NULL) return -1;
436
437 #ifdef G_OS_UNIX
438                 if (link(fileinfo->file, destfile) < 0) {
439 #endif
440                         if (copy_file(fileinfo->file, destfile, TRUE) < 0) {
441                                 g_warning("can't copy message %s to %s",
442                                           fileinfo->file, destfile);
443                                 g_free(destfile);
444                                 return -1;
445                         }
446 #ifdef G_OS_UNIX
447                 }
448 #endif
449
450                 if (relation != NULL)
451                         g_hash_table_insert(relation, fileinfo, GINT_TO_POINTER(dest->last_num + 1));
452                 g_free(destfile);
453                 dest->last_num++;
454         }
455         mh_write_sequences(dest, TRUE);
456         return dest->last_num;
457 }
458
459 static gint mh_copy_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
460 {
461         GSList msglist;
462
463         cm_return_val_if_fail(msginfo != NULL, -1);
464
465         msglist.data = msginfo;
466         msglist.next = NULL;
467
468         return mh_copy_msgs(folder, dest, &msglist, NULL);      
469 }
470
471 static gint mh_copy_msgs(Folder *folder, FolderItem *dest, MsgInfoList *msglist, 
472                          GHashTable *relation)
473 {
474         gboolean dest_need_scan = FALSE;
475         gboolean src_need_scan = FALSE;
476         FolderItem *src = NULL;
477         gchar *srcfile;
478         gchar *destfile;
479         FolderItemPrefs *prefs;
480         MsgInfo *msginfo = NULL;
481         MsgInfoList *cur = NULL;
482         gint curnum = 0, total = 0;
483         gchar *srcpath = NULL;
484         gboolean full_fetch = FALSE;
485         time_t last_dest_mtime = (time_t)0;
486         time_t last_src_mtime = (time_t)0;
487
488         cm_return_val_if_fail(dest != NULL, -1);
489         cm_return_val_if_fail(msglist != NULL, -1);
490         
491         msginfo = (MsgInfo *)msglist->data;
492
493         cm_return_val_if_fail(msginfo != NULL, -1);
494
495         if (msginfo->folder == dest) {
496                 g_warning("the src folder is identical to the dest.");
497                 return -1;
498         }
499
500         if (msginfo->folder->folder != dest->folder)
501                 full_fetch = TRUE;
502         
503         if (FOLDER_TYPE(msginfo->folder->folder) == F_MH) {
504                 src = msginfo->folder;
505         }
506
507         if (dest->last_num < 0) {
508                 mh_get_last_num(folder, dest);
509                 if (dest->last_num < 0) return -1;
510         }
511
512         prefs = dest->prefs;
513
514         srcpath = folder_item_get_path(msginfo->folder);
515
516         dest_need_scan = mh_scan_required(dest->folder, dest);
517         last_dest_mtime = dest->mtime;
518
519         if (src) {
520                 src_need_scan = mh_scan_required(src->folder, src);
521                 last_src_mtime = src->mtime;
522         }
523
524         total = g_slist_length(msglist);
525         if (total > 100) {
526                 if (MSG_IS_MOVE(msginfo->flags))
527                         statusbar_print_all(_("Moving messages..."));
528                 else
529                         statusbar_print_all(_("Copying messages..."));
530         }
531         for (cur = msglist; cur; cur = cur->next) {
532                 msginfo = (MsgInfo *)cur->data;
533                 if (!msginfo) {
534                         goto err_reset_status;
535                 }
536                 if (!full_fetch) {
537                         srcfile = g_strconcat(srcpath, 
538                                 G_DIR_SEPARATOR_S, 
539                                 itos(msginfo->msgnum), NULL);
540                 } else {
541                         srcfile = procmsg_get_message_file(msginfo);
542                 }
543                 if (!srcfile) {
544                         goto err_reset_status;
545                 }
546                 destfile = mh_get_new_msg_filename(dest);
547                 if (!destfile) {
548                         g_free(srcfile);
549                         goto err_reset_status;
550                 }
551
552                 if (total > 100) {
553                         statusbar_progress_all(curnum, total, 100);
554                         if (curnum % 100 == 0)
555                                 GTK_EVENTS_FLUSH();
556                         curnum++;
557                 }
558
559                 debug_print("Copying message %s%c%d to %s ...\n",
560                             msginfo->folder->path, G_DIR_SEPARATOR,
561                             msginfo->msgnum, dest->path);
562
563
564                 if (MSG_IS_MOVE(msginfo->flags)) {
565                         msginfo->flags.tmp_flags &= ~MSG_MOVE_DONE;
566                         if (move_file(srcfile, destfile, TRUE) < 0) {
567                                 FILE_OP_ERROR(srcfile, "move");
568                                 if (copy_file(srcfile, destfile, TRUE) < 0) {
569                                         FILE_OP_ERROR(srcfile, "copy");
570                                         g_free(srcfile);
571                                         g_free(destfile);
572                                         goto err_reset_status;
573                                 }
574                         } else {
575                                 /* say unlinking's not necessary */
576                                 msginfo->flags.tmp_flags |= MSG_MOVE_DONE;
577                         }
578                 } else if (copy_file(srcfile, destfile, TRUE) < 0) {
579                         FILE_OP_ERROR(srcfile, "copy");
580                         g_free(srcfile);
581                         g_free(destfile);
582                         goto err_reset_status;
583                 } 
584                 if (prefs && prefs->enable_folder_chmod && prefs->folder_chmod) {
585                         if (chmod(destfile, prefs->folder_chmod) < 0)
586                                 FILE_OP_ERROR(destfile, "chmod");
587                 }
588                 if (relation) {
589                         if (g_hash_table_lookup(relation, msginfo) != NULL)
590                                 g_warning("already in: %p", msginfo);
591                         
592                         g_hash_table_insert(relation, msginfo, GINT_TO_POINTER(dest->last_num+1));
593                 }
594                 g_free(srcfile);
595                 g_free(destfile);
596                 dest->last_num++;
597         }
598
599         g_free(srcpath);
600         mh_write_sequences(dest, TRUE);
601
602         if (dest->mtime == last_dest_mtime && !dest_need_scan) {
603                 mh_set_mtime(folder, dest);
604         }
605
606         if (src && src->mtime == last_src_mtime && !src_need_scan) {
607                 mh_set_mtime(folder, src);
608         }
609
610         if (total > 100) {
611                 statusbar_progress_all(0,0,0);
612                 statusbar_pop_all();
613         }
614         return dest->last_num;
615 err_reset_status:
616         g_free(srcpath);
617         mh_write_sequences(dest, TRUE);
618         if (total > 100) {
619                 statusbar_progress_all(0,0,0);
620                 statusbar_pop_all();
621         }
622         return -1;
623
624 }
625
626 static gint mh_remove_msg(Folder *folder, FolderItem *item, gint num)
627 {
628         gboolean need_scan = FALSE;
629         time_t last_mtime = (time_t)0;
630         gchar *file;
631
632         cm_return_val_if_fail(item != NULL, -1);
633
634         file = mh_fetch_msg(folder, item, num);
635         cm_return_val_if_fail(file != NULL, -1);
636
637         need_scan = mh_scan_required(folder, item);
638         last_mtime = item->mtime;
639
640         if (claws_unlink(file) < 0) {
641                 FILE_OP_ERROR(file, "unlink");
642                 g_free(file);
643                 return -1;
644         }
645
646         if (item->mtime == last_mtime && !need_scan) {
647                 mh_set_mtime(folder, item);
648         }
649         g_free(file);
650         return 0;
651 }
652
653 static gint mh_remove_msgs(Folder *folder, FolderItem *item, 
654                     MsgInfoList *msglist, GHashTable *relation)
655 {
656         gboolean need_scan = FALSE;
657         gchar *path, *file;
658         time_t last_mtime = (time_t)0;
659         MsgInfoList *cur;
660         gint total = 0, curnum = 0;
661
662         cm_return_val_if_fail(item != NULL, -1);
663
664         path = folder_item_get_path(item);
665         
666         need_scan = mh_scan_required(folder, item);
667         last_mtime = item->mtime;
668
669         total = g_slist_length(msglist);
670         if (total > 100) {
671                 statusbar_print_all(_("Deleting messages..."));
672         }
673
674         for (cur = msglist; cur; cur = cur->next) {
675                 MsgInfo *msginfo = (MsgInfo *)cur->data;
676                 if (msginfo == NULL)
677                         continue;
678                 if (MSG_IS_MOVE(msginfo->flags) && MSG_IS_MOVE_DONE(msginfo->flags)) {
679                         msginfo->flags.tmp_flags &= ~MSG_MOVE_DONE;
680                         continue;
681                 }
682                 if (total > 100) {
683                         statusbar_progress_all(curnum, total, 100);
684                         if (curnum % 100 == 0)
685                                 GTK_EVENTS_FLUSH();
686                         curnum++;
687                 }
688
689                 file = g_strconcat(path, G_DIR_SEPARATOR_S, itos(msginfo->msgnum), NULL);
690                 if (file == NULL)
691                         continue;
692                 
693                 if (claws_unlink(file) < 0) {
694                         g_free(file);
695                         continue;
696                 }
697                 
698                 g_free(file);
699         }
700
701         if (total > 100) {
702                 statusbar_progress_all(0,0,0);
703                 statusbar_pop_all();
704         }
705         if (item->mtime == last_mtime && !need_scan) {
706                 mh_set_mtime(folder, item);
707         }
708
709         g_free(path);
710         return 0;
711 }
712
713 static gint mh_remove_all_msg(Folder *folder, FolderItem *item)
714 {
715         gchar *path;
716         gint val;
717
718         cm_return_val_if_fail(item != NULL, -1);
719
720         path = folder_item_get_path(item);
721         cm_return_val_if_fail(path != NULL, -1);
722         val = remove_all_numbered_files(path);
723         g_free(path);
724
725         mh_write_sequences(item, TRUE);
726
727         return val;
728 }
729
730 static gboolean mh_is_msg_changed(Folder *folder, FolderItem *item,
731                                   MsgInfo *msginfo)
732 {
733         GStatBuf s;
734         gchar *path;
735
736         path = g_strdup_printf("%s%c%d", folder_item_get_path(item),
737                         G_DIR_SEPARATOR, msginfo->msgnum);
738         if (g_stat((path), &s) < 0 ||
739             msginfo->size  != s.st_size || (
740                 (msginfo->mtime - s.st_mtime != 0) &&
741                 (msginfo->mtime - s.st_mtime != 3600) &&
742                 (msginfo->mtime - s.st_mtime != -3600))) {
743                 g_free(path);
744                 return TRUE;
745         }
746
747         g_free(path);
748         return FALSE;
749 }
750
751 static gint mh_scan_tree(Folder *folder)
752 {
753         FolderItem *item;
754
755         cm_return_val_if_fail(folder != NULL, -1);
756
757         if (!folder->node) {
758                 item = folder_item_new(folder, folder->name, NULL);
759                 item->folder = folder;
760                 folder->node = item->node = g_node_new(item);
761         } else
762                 item = FOLDER_ITEM(folder->node->data);
763
764         mh_create_tree(folder);
765         mh_remove_missing_folder_items(folder);
766         mh_scan_tree_recursive(item);
767
768         return 0;
769 }
770
771 #define MAKE_DIR_IF_NOT_EXIST(dir) \
772 { \
773         if (!is_dir_exist(dir)) { \
774                 if (is_file_exist(dir)) { \
775                         g_warning("File '%s' already exists. " \
776                                     "Can't create folder.", dir); \
777                         return -1; \
778                 } \
779                 if (make_dir_hier(dir) < 0) \
780                         return -1; \
781                 debug_print("Created dir '%s'\n", dir); \
782         } \
783 }
784
785 static gint mh_create_tree(Folder *folder)
786 {
787         gchar *rootpath, *f, *path;
788
789         cm_return_val_if_fail(folder != NULL, -1);
790
791         rootpath = LOCAL_FOLDER(folder)->rootpath;
792 #ifdef G_OS_UNIX
793         if (*rootpath == '/') {
794 #elif defined G_OS_WIN32
795         if (g_ascii_isalpha(*rootpath) && !strncmp(rootpath + 1, "\:", 2)) {
796 #endif
797                 /* Folder path is absolute. */
798                 rootpath = g_strdup(rootpath);
799         } else {
800                 /* Folder path is relative, using mail base dir. */
801                 rootpath = g_strconcat(get_mail_base_dir(), G_DIR_SEPARATOR_S,
802                                 rootpath, NULL);
803         }
804
805         MAKE_DIR_IF_NOT_EXIST(rootpath);
806
807         /* Create special directories as needed */
808         if (folder->inbox != NULL &&
809                         folder->inbox->path != NULL)
810                 f = folder->inbox->path;
811         else
812                 f = INBOX_DIR;
813         path = g_strconcat(rootpath, G_DIR_SEPARATOR_S, f, NULL);
814         MAKE_DIR_IF_NOT_EXIST(path);
815         g_free(path);
816
817         if (folder->outbox != NULL &&
818                         folder->outbox->path != NULL)
819                 f = folder->outbox->path;
820         else
821                 f = OUTBOX_DIR;
822         path = g_strconcat(rootpath, G_DIR_SEPARATOR_S, f, NULL);
823         MAKE_DIR_IF_NOT_EXIST(path);
824         g_free(path);
825
826         if (folder->draft != NULL &&
827                         folder->draft->path != NULL)
828                 f = folder->draft->path;
829         else
830                 f = DRAFT_DIR;
831         path = g_strconcat(rootpath, G_DIR_SEPARATOR_S, f, NULL);
832         MAKE_DIR_IF_NOT_EXIST(path);
833         g_free(path);
834
835         if (folder->queue != NULL &&
836                         folder->queue->path != NULL)
837                 f = folder->queue->path;
838         else
839                 f = QUEUE_DIR;
840         path = g_strconcat(rootpath, G_DIR_SEPARATOR_S, f, NULL);
841         MAKE_DIR_IF_NOT_EXIST(path);
842         g_free(path);
843
844         if (folder->trash != NULL &&
845                         folder->trash->path != NULL)
846                 f = folder->trash->path;
847         else
848                 f = TRASH_DIR;
849         path = g_strconcat(rootpath, G_DIR_SEPARATOR_S, f, NULL);
850         MAKE_DIR_IF_NOT_EXIST(path);
851         g_free(path);
852
853         g_free(rootpath);
854         return 0;
855 }
856
857 #undef MAKE_DIR_IF_NOT_EXIST
858
859 static gchar *mh_item_get_path(Folder *folder, FolderItem *item)
860 {
861         gchar *folder_path, *path;
862         gchar *real_path;
863         cm_return_val_if_fail(folder != NULL, NULL);
864         cm_return_val_if_fail(item != NULL, NULL);
865
866         folder_path = g_strdup(LOCAL_FOLDER(folder)->rootpath);
867         cm_return_val_if_fail(folder_path != NULL, NULL);
868
869         /* FIXME: [W32] The code below does not correctly merge
870            relative filenames; there should be a function to handle
871            this.  */
872         if ( !is_relative_filename (folder_path) ) {
873                 if (item->path)
874                         path = g_strconcat(folder_path, G_DIR_SEPARATOR_S,
875                                            item->path, NULL);
876                 else
877                         path = g_strdup(folder_path);
878         } else {
879                 if (item->path)
880                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
881                                            folder_path, G_DIR_SEPARATOR_S,
882                                            item->path, NULL);
883                 else
884                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
885                                            folder_path, NULL);
886         }
887         g_free(folder_path);
888         real_path = mh_filename_from_utf8(path);
889         if (!is_dir_exist(real_path) && is_dir_exist(path)) {
890                 /* mmh, older version did put utf8 filenames instead of
891                  * the correct encoding */
892                 if (g_rename(path, real_path) == 0)
893                         folder_item_scan(item);
894         }
895
896         g_free(path);
897         return real_path;
898 }
899
900 static gboolean mh_renumber_msg(MsgInfo *info)
901 {
902         gchar *src, *dest;
903         gboolean result = FALSE;
904         guint num;
905         cm_return_val_if_fail(info != NULL, FALSE);
906
907         src = folder_item_fetch_msg(info->folder, info->msgnum);
908         dest = mh_get_new_msg_filename(info->folder);
909         num = info->folder->last_num + 1;
910
911         if (move_file(src, dest, FALSE) == 0) {
912                 msgcache_remove_msg(info->folder->cache, info->msgnum);
913                 info->msgnum = num;
914                 msgcache_add_msg(info->folder->cache, info);
915                 result = TRUE;
916         }
917
918         g_free(src);
919         g_free(dest);
920
921         return result;
922 }
923
924 static FolderItem *mh_create_folder(Folder *folder, FolderItem *parent,
925                                     const gchar *name)
926 {
927         gchar *path, *real_name;
928         gchar *fullpath;
929         FolderItem *new_item;
930         gchar *mh_sequences_filename;
931         FILE *mh_sequences_file;
932
933         cm_return_val_if_fail(folder != NULL, NULL);
934         cm_return_val_if_fail(parent != NULL, NULL);
935         cm_return_val_if_fail(name != NULL, NULL);
936
937         path = folder_item_get_path(parent);
938         if (!is_dir_exist(path)) 
939                 if (make_dir_hier(path) != 0)
940                         return NULL;
941
942         real_name = mh_filename_from_utf8(name);
943         fullpath = g_strconcat(path, G_DIR_SEPARATOR_S, real_name, NULL);
944         g_free(real_name);
945         g_free(path);
946
947         if (to_number(name) > 0) {
948                 MsgInfo *info = folder_item_get_msginfo(parent, to_number(name));
949                 if (info != NULL) {
950                         gboolean ok = mh_renumber_msg(info);
951                         procmsg_msginfo_free(&info);
952                         if (!ok) {
953                                 g_free(fullpath);
954                                 return NULL;
955                         }
956                 }
957         }
958
959         if (make_dir(fullpath) < 0) {
960                 g_free(fullpath);
961                 return NULL;
962         }
963
964         g_free(fullpath);
965
966         if (parent->path)
967                 path = g_strconcat(parent->path, G_DIR_SEPARATOR_S, name,
968                                    NULL);
969         else
970                 path = g_strdup(name);
971         new_item = folder_item_new(folder, name, path);
972         folder_item_append(parent, new_item);
973
974         g_free(path);
975
976         path = folder_item_get_path(new_item);
977         mh_sequences_filename = g_strconcat(path, G_DIR_SEPARATOR_S,
978                                             ".mh_sequences", NULL);
979         if ((mh_sequences_file = g_fopen(mh_sequences_filename, "a+b")) != NULL) {
980                 fclose(mh_sequences_file);
981         }
982         g_free(mh_sequences_filename);
983         g_free(path);
984
985         return new_item;
986 }
987
988 static gint mh_rename_folder(Folder *folder, FolderItem *item,
989                              const gchar *name)
990 {
991         gchar *real_name;
992         gchar *oldpath;
993         gchar *dirname;
994         gchar *newpath, *utf8newpath;
995         gchar *paths[2];
996
997         cm_return_val_if_fail(folder != NULL, -1);
998         cm_return_val_if_fail(item != NULL, -1);
999         cm_return_val_if_fail(item->path != NULL, -1);
1000         cm_return_val_if_fail(name != NULL, -1);
1001
1002         oldpath = folder_item_get_path(item);
1003         if (!is_dir_exist(oldpath))
1004                 make_dir_hier(oldpath);
1005
1006         dirname = g_path_get_dirname(oldpath);
1007         real_name = mh_filename_from_utf8(name);
1008         newpath = g_strconcat(dirname, G_DIR_SEPARATOR_S, real_name, NULL);
1009         g_free(real_name);
1010
1011         if (g_rename(oldpath, newpath) < 0) {
1012                 FILE_OP_ERROR(oldpath, "rename");
1013                 g_free(oldpath);
1014                 g_free(newpath);
1015                 return -1;
1016         }
1017
1018         g_free(oldpath);
1019         g_free(newpath);
1020
1021         if (strchr(item->path, G_DIR_SEPARATOR) != NULL) {
1022                 dirname = g_path_get_dirname(item->path);
1023                 utf8newpath = g_strconcat(dirname, G_DIR_SEPARATOR_S,
1024                                           name, NULL);
1025                 g_free(dirname);
1026         } else
1027                 utf8newpath = g_strdup(name);
1028
1029         g_free(item->name);
1030         item->name = g_strdup(name);
1031
1032         paths[0] = g_strdup(item->path);
1033         paths[1] = utf8newpath;
1034         g_node_traverse(item->node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
1035                         mh_rename_folder_func, paths);
1036
1037         g_free(paths[0]);
1038         g_free(paths[1]);
1039         return 0;
1040 }
1041
1042 static gint mh_remove_folder(Folder *folder, FolderItem *item)
1043 {
1044         gchar *path;
1045         gint ret;
1046
1047         cm_return_val_if_fail(folder != NULL, -1);
1048         cm_return_val_if_fail(item != NULL, -1);
1049         cm_return_val_if_fail(item->path != NULL, -1);
1050
1051         path = folder_item_get_path(item);
1052         if ((ret = remove_dir_recursive(path)) < 0) {
1053                 g_warning("can't remove directory '%s'", path);
1054                 g_free(path);
1055                 return ret;
1056         }
1057
1058         g_free(path);
1059         folder_item_remove(item);
1060         return 0;
1061 }
1062
1063 static MsgInfo *mh_parse_msg(const gchar *file, FolderItem *item)
1064 {
1065         MsgInfo *msginfo;
1066         MsgFlags flags;
1067
1068         cm_return_val_if_fail(item != NULL, NULL);
1069         cm_return_val_if_fail(file != NULL, NULL);
1070
1071         flags.perm_flags = MSG_NEW|MSG_UNREAD;
1072         flags.tmp_flags = 0;
1073
1074         if (folder_has_parent_of_type(item, F_QUEUE)) {
1075                 MSG_SET_TMP_FLAGS(flags, MSG_QUEUED);
1076         } else if (folder_has_parent_of_type(item, F_DRAFT)) {
1077                 MSG_SET_TMP_FLAGS(flags, MSG_DRAFT);
1078         }
1079
1080         msginfo = procheader_parse_file(file, flags, FALSE, FALSE);
1081         if (!msginfo) return NULL;
1082
1083         msginfo->msgnum = atoi(file);
1084         msginfo->folder = item;
1085
1086         return msginfo;
1087 }
1088
1089 static gboolean mh_remove_missing_folder_items_func(GNode *node, gpointer data)
1090 {
1091         FolderItem *item;
1092         gchar *path;
1093
1094         cm_return_val_if_fail(node->data != NULL, FALSE);
1095
1096         if (G_NODE_IS_ROOT(node))
1097                 return FALSE;
1098
1099         item = FOLDER_ITEM(node->data);
1100
1101         path = folder_item_get_path(item);
1102         if (!is_dir_exist(path)) {
1103                 debug_print("folder '%s' not found. removing...\n", path?path:"(null)");
1104                 folder_item_remove(item);
1105         }
1106         g_free(path);
1107
1108         return FALSE;
1109 }
1110
1111 static void mh_remove_missing_folder_items(Folder *folder)
1112 {
1113         cm_return_if_fail(folder != NULL);
1114
1115         debug_print("searching missing folders...\n");
1116
1117         g_node_traverse(folder->node, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1118                         mh_remove_missing_folder_items_func, folder);
1119 }
1120
1121 static void mh_scan_tree_recursive(FolderItem *item)
1122 {
1123         Folder *folder;
1124         GDir *dir;
1125         const gchar *dir_name;
1126         gchar *entry, *utf8entry, *utf8name, *path;
1127         gint n_msg = 0;
1128         GError *error = NULL;
1129
1130         cm_return_if_fail(item != NULL);
1131         cm_return_if_fail(item->folder != NULL);
1132
1133         folder = item->folder;
1134
1135         path = folder_item_get_path(item);
1136         debug_print("mh_scan_tree_recursive() opening '%s'\n", path);
1137         dir = g_dir_open(path, 0, &error);
1138         if (!dir) {
1139                 g_warning("failed to open directory '%s': %s (%d)",
1140                                 path, error->message, error->code);
1141                 g_error_free(error);
1142                 g_free(path);
1143                 return;
1144         }
1145
1146         debug_print("scanning %s ...\n",
1147                     item->path ? item->path
1148                     : LOCAL_FOLDER(item->folder)->rootpath);
1149         if (folder->ui_func)
1150                 folder->ui_func(folder, item, folder->ui_func_data);
1151
1152         while ((dir_name = g_dir_read_name(dir)) != NULL) {
1153                 if (dir_name[0] == '.') continue;
1154
1155                 entry = g_strconcat(path, G_DIR_SEPARATOR_S, dir_name, NULL);
1156
1157                 utf8name = mh_filename_to_utf8(dir_name);
1158                 if (item->path)
1159                         utf8entry = g_strconcat(item->path, G_DIR_SEPARATOR_S,
1160                                                 utf8name, NULL);
1161                 else
1162                         utf8entry = g_strdup(utf8name);
1163
1164                 if (g_file_test(entry, G_FILE_TEST_IS_DIR)) {
1165                         FolderItem *new_item = NULL;
1166                         GNode *node;
1167
1168                         node = item->node;
1169                         for (node = node->children; node != NULL; node = node->next) {
1170                                 FolderItem *cur_item = FOLDER_ITEM(node->data);
1171                                 gchar *curpath = folder_item_get_path(cur_item);
1172                                 if (!strcmp2(curpath, entry)) {
1173                                         new_item = cur_item;
1174                                         g_free(curpath);
1175                                         break;
1176                                 }
1177                                 g_free(curpath);
1178                         }
1179                         if (!new_item) {
1180                                 debug_print("new folder '%s' found.\n", entry);
1181                                 new_item = folder_item_new(folder, utf8name, utf8entry);
1182                                 folder_item_append(item, new_item);
1183                         }
1184
1185                         if (!item->path) {
1186                                 if (!folder->inbox &&
1187                                     !strcmp(dir_name, INBOX_DIR)) {
1188                                         new_item->stype = F_INBOX;
1189                                         folder->inbox = new_item;
1190                                 } else if (!folder->outbox &&
1191                                            !strcmp(dir_name, OUTBOX_DIR)) {
1192                                         new_item->stype = F_OUTBOX;
1193                                         folder->outbox = new_item;
1194                                 } else if (!folder->draft &&
1195                                            !strcmp(dir_name, DRAFT_DIR)) {
1196                                         new_item->stype = F_DRAFT;
1197                                         folder->draft = new_item;
1198                                 } else if (!folder->queue &&
1199                                            !strcmp(dir_name, QUEUE_DIR)) {
1200                                         new_item->stype = F_QUEUE;
1201                                         folder->queue = new_item;
1202                                 } else if (!folder->trash &&
1203                                            !strcmp(dir_name, TRASH_DIR)) {
1204                                         new_item->stype = F_TRASH;
1205                                         folder->trash = new_item;
1206                                 }
1207                         }
1208
1209                         mh_scan_tree_recursive(new_item);
1210                 } else if (to_number(dir_name) > 0) n_msg++;
1211
1212                 g_free(entry);
1213                 g_free(utf8entry);
1214                 g_free(utf8name);
1215         }
1216
1217         g_dir_close(dir);
1218         g_free(path);
1219
1220         mh_set_mtime(folder, item);
1221 }
1222
1223 static gboolean mh_rename_folder_func(GNode *node, gpointer data)
1224 {
1225         FolderItem *item = node->data;
1226         gchar **paths = data;
1227         const gchar *oldpath = paths[0];
1228         const gchar *newpath = paths[1];
1229         gchar *base;
1230         gchar *new_itempath;
1231         gint oldpathlen;
1232
1233         oldpathlen = strlen(oldpath);
1234         if (strncmp(oldpath, item->path, oldpathlen) != 0) {
1235                 g_warning("path doesn't match: %s, %s", oldpath, item->path);
1236                 return TRUE;
1237         }
1238
1239         base = item->path + oldpathlen;
1240         while (*base == G_DIR_SEPARATOR) base++;
1241         if (*base == '\0')
1242                 new_itempath = g_strdup(newpath);
1243         else
1244                 new_itempath = g_strconcat(newpath, G_DIR_SEPARATOR_S, base,
1245                                            NULL);
1246         g_free(item->path);
1247         item->path = new_itempath;
1248
1249         return FALSE;
1250 }
1251
1252 static gchar *mh_filename_from_utf8(const gchar *path)
1253 {
1254         gchar *real_path = g_filename_from_utf8(path, -1, NULL, NULL, NULL);
1255
1256         if (!real_path) {
1257                 g_warning("mh_filename_from_utf8: failed to convert character set");
1258                 real_path = g_strdup(path);
1259         }
1260
1261         return real_path;
1262 }
1263
1264 static gchar *mh_filename_to_utf8(const gchar *path)
1265 {
1266         gchar *utf8path = g_filename_to_utf8(path, -1, NULL, NULL, NULL);
1267         if (!utf8path) {
1268                 g_warning("mh_filename_to_utf8: failed to convert character set");
1269                 utf8path = g_strdup(path);
1270         }
1271
1272         return utf8path;
1273 }
1274
1275 static gint sort_cache_list_by_msgnum(gconstpointer a, gconstpointer b)
1276 {
1277         MsgInfo *msginfo_a = (MsgInfo *) a;
1278         MsgInfo *msginfo_b = (MsgInfo *) b;
1279
1280         return (msginfo_a->msgnum - msginfo_b->msgnum);
1281 }
1282
1283 static gchar *get_unseen_seq_name(void)
1284 {
1285         static gchar *seq_name = NULL;
1286         if (!seq_name) {
1287                 gchar buf[BUFFSIZE];
1288                 gchar *tmp;
1289                 gchar *profile_path = g_strconcat(
1290                         get_home_dir(), G_DIR_SEPARATOR_S,
1291                         ".mh_profile", NULL);
1292                 FILE *fp = g_fopen(profile_path, "r");
1293                 if (fp) {
1294                         while (fgets(buf, sizeof(buf), fp) != NULL) {
1295                                 if (!strncmp(buf, "Unseen-Sequence:", strlen("Unseen-Sequence:"))) {
1296                                         gchar *seq_tmp = buf+strlen("Unseen-Sequence:");
1297                                         while (*seq_tmp == ' ')
1298                                                 seq_tmp++;
1299                                         seq_name = g_strdup(seq_tmp);
1300                                         seq_name = strretchomp(seq_name);
1301                                         break;
1302                                 }
1303                         }
1304                         fclose(fp);
1305                 }
1306                 if (!seq_name)
1307                         seq_name = g_strdup("unseen");
1308                 tmp = g_strdup_printf("%s:", seq_name);
1309                 g_free(seq_name);
1310                 seq_name = tmp;
1311         }
1312         return seq_name;        
1313 }
1314
1315 static void mh_write_sequences(FolderItem *item, gboolean remove_unseen)
1316 {
1317         gchar *mh_sequences_old, *mh_sequences_new;
1318         FILE *mh_sequences_old_fp, *mh_sequences_new_fp;
1319         gchar buf[BUFFSIZE];
1320         gchar *path = NULL;
1321         gboolean err = FALSE;
1322         START_TIMING("");
1323
1324         if (!item)
1325                 return;
1326         
1327         path = folder_item_get_path(item);
1328
1329         mh_sequences_old = g_strconcat(path, G_DIR_SEPARATOR_S,
1330                                             ".mh_sequences", NULL);
1331         mh_sequences_new = g_strconcat(path, G_DIR_SEPARATOR_S,
1332                                             ".mh_sequences.new", NULL);
1333         if ((mh_sequences_new_fp = g_fopen(mh_sequences_new, "w+b")) != NULL) {
1334                 GSList *msglist = folder_item_get_msg_list(item);
1335                 GSList *cur;
1336                 MsgInfo *info = NULL;
1337                 gint start = -1, end = -1;
1338                 gchar *sequence = g_strdup("");
1339                 gint seq_len = 0;
1340                 msglist = g_slist_sort(msglist, sort_cache_list_by_msgnum);
1341                 cur = msglist;
1342                 
1343                 /* write the unseen sequence if we don't have to scrap it */
1344                 if (!remove_unseen) do {
1345                         info = (MsgInfo *)(cur ? cur->data:NULL);
1346                         if (info && (MSG_IS_UNREAD(info->flags) || MSG_IS_NEW(info->flags))) {
1347                                 if (start < 0)
1348                                         start = end = info->msgnum;
1349                                 else
1350                                         end = info->msgnum;
1351                         } else {
1352                                 if (start > 0 && end > 0) {
1353                                         gchar tmp[32];
1354                                         gint tmp_len = 0;
1355                                         if (start != end)
1356                                                 snprintf(tmp, 31, " %d-%d", start, end);
1357                                         else
1358                                                 snprintf(tmp, 31, " %d", start);
1359                                         
1360                                         tmp_len = strlen(tmp);
1361                                         sequence = g_realloc(sequence, seq_len+tmp_len+1);
1362                                         strcpy(sequence+seq_len, tmp);
1363                                         seq_len += tmp_len;
1364
1365                                         start = end = -1;
1366                                 }
1367                         }
1368                         cur = cur ? cur->next:NULL;
1369                 } while (cur || (start > 0 && end > 0));
1370                 if (sequence && *sequence) {
1371                         if (fprintf(mh_sequences_new_fp, "%s%s\n", 
1372                                         get_unseen_seq_name(), sequence) < 0)
1373                                 err = TRUE;
1374                         else
1375                                 debug_print("wrote unseen sequence: '%s%s'\n", 
1376                                         get_unseen_seq_name(), sequence);
1377                 }
1378                 /* rewrite the rest of the file */
1379                 if ((mh_sequences_old_fp = g_fopen(mh_sequences_old, "r+b")) != NULL) {
1380                         while (fgets(buf, sizeof(buf), mh_sequences_old_fp) != NULL) {
1381                                 if (strncmp(buf, get_unseen_seq_name(), strlen(get_unseen_seq_name())))
1382                                         if (fprintf(mh_sequences_new_fp, "%s", buf) < 0) {
1383                                                 err = TRUE;
1384                                                 break;
1385                                         }
1386                         }
1387                         fclose(mh_sequences_old_fp);
1388                 }
1389                 
1390                 fflush(mh_sequences_new_fp);
1391 #if 0
1392                 fsync(fileno(mh_sequences_new_fp));
1393 #endif
1394                 if (fclose(mh_sequences_new_fp) == EOF)
1395                         err = TRUE;
1396
1397                 if (!err) {
1398                         if (g_rename(mh_sequences_new, mh_sequences_old) < 0)
1399                                 FILE_OP_ERROR(mh_sequences_new, "rename");
1400                 }
1401                 g_free(sequence);
1402                 procmsg_msg_list_free(msglist);
1403         }
1404         g_free(mh_sequences_old);
1405         g_free(mh_sequences_new);
1406         g_free(path);
1407
1408         END_TIMING();
1409 }
1410
1411 static int mh_item_close(Folder *folder, FolderItem *item)
1412 {
1413         time_t last_mtime = (time_t)0;
1414         gboolean need_scan = mh_scan_required(item->folder, item);
1415         last_mtime = item->mtime;
1416
1417         mh_write_sequences(item, FALSE);
1418
1419         if (item->mtime == last_mtime && !need_scan) {
1420                 mh_set_mtime(folder, item);
1421         }
1422
1423         return 0;
1424 }
1425
1426 static void mh_set_mtime(Folder *folder, FolderItem *item)
1427 {
1428         GStatBuf s;
1429         gchar *path = folder_item_get_path(item);
1430
1431         cm_return_if_fail(path != NULL);
1432
1433         if (g_stat(path, &s) < 0) {
1434                 FILE_OP_ERROR(path, "stat");
1435                 g_free(path);
1436                 return;
1437         }
1438
1439         item->mtime = s.st_mtime;
1440         debug_print("MH: forced mtime of %s to %ld\n", item->name?item->name:"(null)", item->mtime);
1441         g_free(path);
1442 }