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 #include "file-utils.h"
48 
49 /* Define possible missing constants for Windows. */
50 #ifdef G_OS_WIN32
51 # ifndef S_IRGRP
52 # define S_IRGRP 0
53 # define S_IWGRP 0
54 # endif
55 # ifndef S_IROTH
56 # define S_IROTH 0
57 # define S_IWOTH 0
58 # endif
59 #endif
60 
61 
62 static void	mh_folder_init		(Folder		*folder,
63 					 const gchar	*name,
64 					 const gchar	*path);
65 
66 static Folder	*mh_folder_new		(const gchar	*name,
67 					 const gchar	*path);
68 static void     mh_folder_destroy	(Folder		*folder);
69 static gchar   *mh_fetch_msg		(Folder		*folder,
70 					 FolderItem	*item,
71 					 gint		 num);
72 static MsgInfo *mh_get_msginfo		(Folder		*folder,
73 					 FolderItem	*item,
74 					 gint		 num);
75 static gint     mh_add_msg		(Folder		*folder,
76 					 FolderItem	*dest,
77 					 const gchar	*file,
78 					 MsgFlags	*flags);
79 static gint     mh_add_msgs		(Folder		*folder,
80 					 FolderItem	*dest,
81 					 GSList		*file_list,
82 					 GHashTable 	*relation);
83 static gint     mh_copy_msg		(Folder		*folder,
84 					 FolderItem	*dest,
85 					 MsgInfo	*msginfo);
86 static gint	mh_copy_msgs		(Folder 	*folder,
87 					 FolderItem 	*dest,
88 					 MsgInfoList 	*msglist,
89 			 		 GHashTable 	*relation);
90 static gint     mh_remove_msg		(Folder		*folder,
91 					 FolderItem	*item,
92 					 gint 		 num);
93 static gint 	mh_remove_msgs		(Folder 	*folder,
94 					 FolderItem 	*item,
95 		    			 MsgInfoList 	*msglist,
96 					 GHashTable 	*relation);
97 static gint     mh_remove_all_msg	(Folder		*folder,
98 					 FolderItem	*item);
99 static gboolean mh_is_msg_changed	(Folder		*folder,
100 					 FolderItem	*item,
101 					 MsgInfo	*msginfo);
102 
103 static gint 	mh_get_num_list		(Folder 	*folder,
104 			    		 FolderItem 	*item,
105 					 GSList 	**list,
106 					 gboolean 	*old_uids_valid);
107 static gint 	mh_scan_tree		(Folder 	*folder);
108 
109 static gint    mh_create_tree		(Folder		*folder);
110 static FolderItem *mh_create_folder	(Folder		*folder,
111 					 FolderItem	*parent,
112 					 const gchar	*name);
113 static gint    mh_rename_folder		(Folder		*folder,
114 					 FolderItem	*item,
115 					 const gchar	*name);
116 static gint    mh_remove_folder		(Folder		*folder,
117 					 FolderItem	*item);
118 
119 static gchar   *mh_get_new_msg_filename		(FolderItem	*dest);
120 
121 static MsgInfo *mh_parse_msg			(const gchar	*file,
122 						 FolderItem	*item);
123 static void	mh_remove_missing_folder_items	(Folder		*folder);
124 static gchar	*mh_filename_from_utf8		(const gchar	*path);
125 static gchar	*mh_filename_to_utf8		(const gchar	*path);
126 static void	mh_scan_tree_recursive		(FolderItem	*item);
127 
128 static gboolean mh_rename_folder_func		(GNode		*node,
129 						 gpointer	 data);
130 static gchar   *mh_item_get_path		(Folder *folder,
131 						 FolderItem *item);
132 
133 static gboolean mh_scan_required	(Folder		*folder,
134 					 FolderItem	*item);
135 static void mh_set_mtime		(Folder		*folder,
136 					 FolderItem *item);
137 static int mh_item_close		(Folder		*folder,
138 					 FolderItem	*item);
139 #if 0
140 static gint mh_get_flags		(Folder *folder, FolderItem *item,
141                            		 MsgInfoList *msginfo_list, GHashTable *msgflags);
142 #endif
143 static void mh_write_sequences		(FolderItem 	*item, gboolean remove_unseen);
144 
145 static FolderClass mh_class;
146 
mh_get_class(void)147 FolderClass *mh_get_class(void)
148 {
149 	if (mh_class.idstr == NULL) {
150 		mh_class.type = F_MH;
151 		mh_class.idstr = "mh";
152 		mh_class.uistr = "MH";
153 		mh_class.supports_server_search = FALSE;
154 
155 		/* Folder functions */
156 		mh_class.new_folder = mh_folder_new;
157 		mh_class.destroy_folder = mh_folder_destroy;
158 		mh_class.set_xml = folder_local_set_xml;
159 		mh_class.get_xml = folder_local_get_xml;
160 		mh_class.scan_tree = mh_scan_tree;
161 		mh_class.create_tree = mh_create_tree;
162 
163 		/* FolderItem functions */
164 		mh_class.item_get_path = mh_item_get_path;
165 		mh_class.create_folder = mh_create_folder;
166 		mh_class.rename_folder = mh_rename_folder;
167 		mh_class.remove_folder = mh_remove_folder;
168 		mh_class.get_num_list = mh_get_num_list;
169 		mh_class.scan_required = mh_scan_required;
170 		mh_class.set_mtime = mh_set_mtime;
171 		mh_class.close = mh_item_close;
172 		mh_class.get_flags = NULL; /*mh_get_flags */;
173 
174 		/* Message functions */
175 		mh_class.get_msginfo = mh_get_msginfo;
176 		mh_class.fetch_msg = mh_fetch_msg;
177 		mh_class.add_msg = mh_add_msg;
178 		mh_class.add_msgs = mh_add_msgs;
179 		mh_class.copy_msg = mh_copy_msg;
180 		mh_class.copy_msgs = mh_copy_msgs;
181 		mh_class.search_msgs = folder_item_search_msgs_local;
182 		mh_class.remove_msg = mh_remove_msg;
183 		mh_class.remove_msgs = mh_remove_msgs;
184 		mh_class.remove_all_msg = mh_remove_all_msg;
185 		mh_class.is_msg_changed = mh_is_msg_changed;
186 	}
187 
188 	return &mh_class;
189 }
190 
mh_folder_new(const gchar * name,const gchar * path)191 static Folder *mh_folder_new(const gchar *name, const gchar *path)
192 {
193 	Folder *folder;
194 
195 	folder = (Folder *)g_new0(MHFolder, 1);
196 	folder->klass = &mh_class;
197 	mh_folder_init(folder, name, path);
198 
199 	return folder;
200 }
201 
mh_folder_destroy(Folder * folder)202 static void mh_folder_destroy(Folder *folder)
203 {
204 	folder_local_folder_destroy(LOCAL_FOLDER(folder));
205 }
206 
mh_folder_init(Folder * folder,const gchar * name,const gchar * path)207 static void mh_folder_init(Folder *folder, const gchar *name, const gchar *path)
208 {
209 	folder_local_folder_init(folder, name, path);
210 
211 }
212 
mh_scan_required(Folder * folder,FolderItem * item)213 gboolean mh_scan_required(Folder *folder, FolderItem *item)
214 {
215 	gchar *path;
216 	GStatBuf s;
217 
218 	path = folder_item_get_path(item);
219 	cm_return_val_if_fail(path != NULL, FALSE);
220 
221 	if (g_stat(path, &s) < 0) {
222 		FILE_OP_ERROR(path, "stat");
223 		g_free(path);
224 		return FALSE;
225 	}
226 
227 	if ((s.st_mtime > item->mtime) &&
228 		(s.st_mtime - 3600 != item->mtime)) {
229 		debug_print("MH scan required, folder updated: %s (%ld > %ld)\n",
230 			    path,
231 			    (long int) s.st_mtime,
232 			    (long int) item->mtime);
233 		g_free(path);
234 		return TRUE;
235 	}
236 
237 	debug_print("MH scan not required: %s (%ld <= %ld)\n",
238 		    path,
239 		    (long int) s.st_mtime,
240 		    (long int) item->mtime);
241 	g_free(path);
242 	return FALSE;
243 }
244 
mh_get_last_num(Folder * folder,FolderItem * item)245 static void mh_get_last_num(Folder *folder, FolderItem *item)
246 {
247 	gchar *path, *fullpath;
248 	GDir *dp;
249 	const gchar *d;
250 	GError *error = NULL;
251 	gint max = 0;
252 	gint num;
253 
254 	cm_return_if_fail(item != NULL);
255 
256 	debug_print("mh_get_last_num(): Scanning %s ...\n", item->path?item->path:"(null)");
257 
258 	path = folder_item_get_path(item);
259 	cm_return_if_fail(path != NULL);
260 
261 	if ((dp = g_dir_open(path, 0, &error)) == NULL) {
262 		g_warning("Couldn't open directory '%s': %s (%d)",
263 				path, error->message, error->code);
264 		g_error_free(error);
265 		g_free(path);
266 		return;
267 	}
268 
269 	while ((d = g_dir_read_name(dp)) != NULL) {
270 		fullpath = g_strconcat(path, G_DIR_SEPARATOR_S, d, NULL);
271 		if ((num = to_number(d)) > 0 &&
272 		    g_file_test(fullpath, G_FILE_TEST_IS_REGULAR)) {
273 			if (max < num)
274 				max = num;
275 		}
276 		g_free(fullpath);
277 
278 		if (num % 2000 == 0)
279 			GTK_EVENTS_FLUSH();
280 	}
281 	g_dir_close(dp);
282 	g_free(path);
283 
284 	debug_print("Last number in dir %s = %d\n", item->path?item->path:"(null)", max);
285 	item->last_num = max;
286 }
287 
mh_get_num_list(Folder * folder,FolderItem * item,GSList ** list,gboolean * old_uids_valid)288 gint mh_get_num_list(Folder *folder, FolderItem *item, GSList **list, gboolean *old_uids_valid)
289 {
290 
291 	gchar *path;
292 	GDir *dp;
293 	const gchar *d;
294 	GError *error = NULL;
295 	gint num, nummsgs = 0;
296 
297 	cm_return_val_if_fail(item != NULL, -1);
298 
299 	debug_print("mh_get_num_list(): Scanning %s ...\n", item->path?item->path:"(null)");
300 
301 	*old_uids_valid = TRUE;
302 
303 	path = folder_item_get_path(item);
304 	cm_return_val_if_fail(path != NULL, -1);
305 
306 	if ((dp = g_dir_open(path, 0, &error)) == NULL) {
307 		g_message("Couldn't open current directory: %s (%d).\n",
308 				error->message, error->code);
309 		g_error_free(error);
310 		g_free(path);
311 		return -1;
312 	}
313 	g_free(path);
314 
315 	while ((d = g_dir_read_name(dp)) != NULL) {
316 		if ((num = to_number(d)) > 0) {
317 			*list = g_slist_prepend(*list, GINT_TO_POINTER(num));
318 		   	nummsgs++;
319 		}
320 	}
321 	g_dir_close(dp);
322 
323 	mh_set_mtime(folder, item);
324 	return nummsgs;
325 }
326 
mh_fetch_msg(Folder * folder,FolderItem * item,gint num)327 static gchar *mh_fetch_msg(Folder *folder, FolderItem *item, gint num)
328 {
329 	gchar *path;
330 	gchar *file;
331 
332 	cm_return_val_if_fail(item != NULL, NULL);
333 	cm_return_val_if_fail(num > 0, NULL);
334 
335 	path = folder_item_get_path(item);
336 	file = g_strconcat(path, G_DIR_SEPARATOR_S, itos(num), NULL);
337 
338 	if (!is_file_exist(file)) {
339 		g_free(file);
340 		g_free(path);
341 		return NULL;
342 	}
343 	g_free(path);
344 	return file;
345 }
346 
mh_get_msginfo(Folder * folder,FolderItem * item,gint num)347 static MsgInfo *mh_get_msginfo(Folder *folder, FolderItem *item, gint num)
348 {
349 	MsgInfo *msginfo;
350 	gchar *file;
351 
352 	cm_return_val_if_fail(item != NULL, NULL);
353 	if (num <= 0)
354 		return NULL;
355 
356 	file = mh_fetch_msg(folder, item, num);
357 	if (!file) return NULL;
358 
359 	msginfo = mh_parse_msg(file, item);
360 	if (msginfo)
361 		msginfo->msgnum = num;
362 
363 	g_free(file);
364 
365 	return msginfo;
366 }
367 
mh_get_new_msg_filename(FolderItem * dest)368 static gchar *mh_get_new_msg_filename(FolderItem *dest)
369 {
370 	gchar *destfile;
371 	gchar *destpath;
372 
373 	destpath = folder_item_get_path(dest);
374 	cm_return_val_if_fail(destpath != NULL, NULL);
375 
376 	if (dest->last_num < 0) {
377 		mh_get_last_num(dest->folder, dest);
378 		if (dest->last_num < 0) return NULL;
379 	}
380 
381 	if (!is_dir_exist(destpath))
382 		make_dir_hier(destpath);
383 
384 	for (;;) {
385 		destfile = g_strdup_printf("%s%c%d", destpath, G_DIR_SEPARATOR,
386 					   dest->last_num + 1);
387 		if (is_file_entry_exist(destfile)) {
388 			dest->last_num++;
389 			g_free(destfile);
390 		} else
391 			break;
392 	}
393 
394 	g_free(destpath);
395 
396 	return destfile;
397 }
398 
mh_add_msg(Folder * folder,FolderItem * dest,const gchar * file,MsgFlags * flags)399 static gint mh_add_msg(Folder *folder, FolderItem *dest, const gchar *file, MsgFlags *flags)
400 {
401 	gint ret;
402 	GSList file_list;
403 	MsgFileInfo fileinfo;
404 
405 	cm_return_val_if_fail(file != NULL, -1);
406 
407 	fileinfo.msginfo = NULL;
408 	fileinfo.file = (gchar *)file;
409 	fileinfo.flags = flags;
410 	file_list.data = &fileinfo;
411 	file_list.next = NULL;
412 
413         ret = mh_add_msgs(folder, dest, &file_list, NULL);
414 	return ret;
415 }
416 
mh_add_msgs(Folder * folder,FolderItem * dest,GSList * file_list,GHashTable * relation)417 static gint mh_add_msgs(Folder *folder, FolderItem *dest, GSList *file_list,
418                  GHashTable *relation)
419 {
420 	gchar *destfile;
421 	GSList *cur;
422 	MsgFileInfo *fileinfo;
423 
424 	cm_return_val_if_fail(dest != NULL, -1);
425 	cm_return_val_if_fail(file_list != NULL, -1);
426 
427 	if (dest->last_num < 0) {
428 		mh_get_last_num(folder, dest);
429 		if (dest->last_num < 0) return -1;
430 	}
431 
432 	for (cur = file_list; cur != NULL; cur = cur->next) {
433 		fileinfo = (MsgFileInfo *)cur->data;
434 
435 		destfile = mh_get_new_msg_filename(dest);
436 		if (destfile == NULL) return -1;
437 
438 #ifdef G_OS_UNIX
439 		if (link(fileinfo->file, destfile) < 0) {
440 #endif
441 			if (copy_file(fileinfo->file, destfile, TRUE) < 0) {
442 				g_warning("can't copy message %s to %s",
443 					  fileinfo->file, destfile);
444 				g_free(destfile);
445 				return -1;
446 			}
447 #ifdef G_OS_UNIX
448 		}
449 #endif
450 
451 		if (relation != NULL)
452 			g_hash_table_insert(relation, fileinfo, GINT_TO_POINTER(dest->last_num + 1));
453 		g_free(destfile);
454 		dest->last_num++;
455 	}
456 	mh_write_sequences(dest, TRUE);
457 	return dest->last_num;
458 }
459 
mh_copy_msg(Folder * folder,FolderItem * dest,MsgInfo * msginfo)460 static gint mh_copy_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
461 {
462 	GSList msglist;
463 
464 	cm_return_val_if_fail(msginfo != NULL, -1);
465 
466 	msglist.data = msginfo;
467 	msglist.next = NULL;
468 
469 	return mh_copy_msgs(folder, dest, &msglist, NULL);
470 }
471 
mh_copy_msgs(Folder * folder,FolderItem * dest,MsgInfoList * msglist,GHashTable * relation)472 static gint mh_copy_msgs(Folder *folder, FolderItem *dest, MsgInfoList *msglist,
473 			 GHashTable *relation)
474 {
475 	gboolean dest_need_scan = FALSE;
476 	gboolean src_need_scan = FALSE;
477 	FolderItem *src = NULL;
478 	gchar *srcfile;
479 	gchar *destfile;
480 	FolderItemPrefs *prefs;
481 	MsgInfo *msginfo = NULL;
482 	MsgInfoList *cur = NULL;
483 	gint curnum = 0, total = 0;
484 	gchar *srcpath = NULL;
485 	gboolean full_fetch = FALSE;
486 	time_t last_dest_mtime = (time_t)0;
487 	time_t last_src_mtime = (time_t)0;
488 
489 	cm_return_val_if_fail(dest != NULL, -1);
490 	cm_return_val_if_fail(msglist != NULL, -1);
491 
492 	msginfo = (MsgInfo *)msglist->data;
493 
494 	cm_return_val_if_fail(msginfo != NULL, -1);
495 
496 	if (msginfo->folder == dest) {
497 		g_warning("the src folder is identical to the dest.");
498 		return -1;
499 	}
500 
501 	if (msginfo->folder->folder != dest->folder)
502 		full_fetch = TRUE;
503 
504 	if (FOLDER_TYPE(msginfo->folder->folder) == F_MH) {
505 		src = msginfo->folder;
506 	}
507 
508 	if (dest->last_num < 0) {
509 		mh_get_last_num(folder, dest);
510 		if (dest->last_num < 0) return -1;
511 	}
512 
513 	prefs = dest->prefs;
514 
515 	srcpath = folder_item_get_path(msginfo->folder);
516 
517 	dest_need_scan = mh_scan_required(dest->folder, dest);
518 	last_dest_mtime = dest->mtime;
519 
520 	if (src) {
521 		src_need_scan = mh_scan_required(src->folder, src);
522 		last_src_mtime = src->mtime;
523 	}
524 
525 	total = g_slist_length(msglist);
526 	if (total > 100) {
527 		if (MSG_IS_MOVE(msginfo->flags))
528 			statusbar_print_all(_("Moving messages..."));
529 		else
530 			statusbar_print_all(_("Copying messages..."));
531 	}
532 	for (cur = msglist; cur; cur = cur->next) {
533 		msginfo = (MsgInfo *)cur->data;
534 		if (!msginfo) {
535 			goto err_reset_status;
536 		}
537 		if (!full_fetch) {
538 			srcfile = g_strconcat(srcpath,
539 				G_DIR_SEPARATOR_S,
540 				itos(msginfo->msgnum), NULL);
541 		} else {
542 			srcfile = procmsg_get_message_file(msginfo);
543 		}
544 		if (!srcfile) {
545 			goto err_reset_status;
546 		}
547 		destfile = mh_get_new_msg_filename(dest);
548 		if (!destfile) {
549 			g_free(srcfile);
550 			goto err_reset_status;
551 		}
552 
553 		if (total > 100) {
554 			statusbar_progress_all(curnum, total, 100);
555 			if (curnum % 100 == 0)
556 				GTK_EVENTS_FLUSH();
557 			curnum++;
558 		}
559 
560 		debug_print("Copying message %s%c%d to %s ...\n",
561 			    msginfo->folder->path, G_DIR_SEPARATOR,
562 			    msginfo->msgnum, dest->path);
563 
564 
565 		if (MSG_IS_MOVE(msginfo->flags)) {
566 			msginfo->flags.tmp_flags &= ~MSG_MOVE_DONE;
567 			if (move_file(srcfile, destfile, TRUE) < 0) {
568 				FILE_OP_ERROR(srcfile, "move");
569 				if (copy_file(srcfile, destfile, TRUE) < 0) {
570 					FILE_OP_ERROR(srcfile, "copy");
571 					g_free(srcfile);
572 					g_free(destfile);
573 					goto err_reset_status;
574 				}
575 			} else {
576 				/* say unlinking's not necessary */
577 				msginfo->flags.tmp_flags |= MSG_MOVE_DONE;
578 			}
579 		} else if (copy_file(srcfile, destfile, TRUE) < 0) {
580 			FILE_OP_ERROR(srcfile, "copy");
581 			g_free(srcfile);
582 			g_free(destfile);
583 			goto err_reset_status;
584 		}
585 		if (prefs && prefs->enable_folder_chmod && prefs->folder_chmod) {
586 			if (chmod(destfile, prefs->folder_chmod) < 0)
587 				FILE_OP_ERROR(destfile, "chmod");
588 		}
589 		if (relation) {
590 			if (g_hash_table_lookup(relation, msginfo) != NULL)
591 				g_warning("already in: %p", msginfo);
592 
593 			g_hash_table_insert(relation, msginfo, GINT_TO_POINTER(dest->last_num+1));
594 		}
595 		g_free(srcfile);
596 		g_free(destfile);
597 		dest->last_num++;
598 	}
599 
600 	g_free(srcpath);
601 	mh_write_sequences(dest, TRUE);
602 
603 	if (dest->mtime == last_dest_mtime && !dest_need_scan) {
604 		mh_set_mtime(folder, dest);
605 	}
606 
607 	if (src && src->mtime == last_src_mtime && !src_need_scan) {
608 		mh_set_mtime(folder, src);
609 	}
610 
611 	if (total > 100) {
612 		statusbar_progress_all(0,0,0);
613 		statusbar_pop_all();
614 	}
615 	return dest->last_num;
616 err_reset_status:
617 	g_free(srcpath);
618 	mh_write_sequences(dest, TRUE);
619 	if (total > 100) {
620 		statusbar_progress_all(0,0,0);
621 		statusbar_pop_all();
622 	}
623 	return -1;
624 
625 }
626 
mh_remove_msg(Folder * folder,FolderItem * item,gint num)627 static gint mh_remove_msg(Folder *folder, FolderItem *item, gint num)
628 {
629 	gboolean need_scan = FALSE;
630 	time_t last_mtime = (time_t)0;
631 	gchar *file;
632 
633 	cm_return_val_if_fail(item != NULL, -1);
634 
635 	file = mh_fetch_msg(folder, item, num);
636 	cm_return_val_if_fail(file != NULL, -1);
637 
638 	need_scan = mh_scan_required(folder, item);
639 	last_mtime = item->mtime;
640 
641 	if (claws_unlink(file) < 0) {
642 		FILE_OP_ERROR(file, "unlink");
643 		g_free(file);
644 		return -1;
645 	}
646 
647 	if (item->mtime == last_mtime && !need_scan) {
648 		mh_set_mtime(folder, item);
649 	}
650 	g_free(file);
651 	return 0;
652 }
653 
mh_remove_msgs(Folder * folder,FolderItem * item,MsgInfoList * msglist,GHashTable * relation)654 static gint mh_remove_msgs(Folder *folder, FolderItem *item,
655 		    MsgInfoList *msglist, GHashTable *relation)
656 {
657 	gboolean need_scan = FALSE;
658 	gchar *path, *file;
659 	time_t last_mtime = (time_t)0;
660 	MsgInfoList *cur;
661 	gint total = 0, curnum = 0;
662 
663 	cm_return_val_if_fail(item != NULL, -1);
664 
665 	path = folder_item_get_path(item);
666 
667 	need_scan = mh_scan_required(folder, item);
668 	last_mtime = item->mtime;
669 
670 	total = g_slist_length(msglist);
671 	if (total > 100) {
672 		statusbar_print_all(_("Deleting messages..."));
673 	}
674 
675 	for (cur = msglist; cur; cur = cur->next) {
676 		MsgInfo *msginfo = (MsgInfo *)cur->data;
677 		if (msginfo == NULL)
678 			continue;
679 		if (MSG_IS_MOVE(msginfo->flags) && MSG_IS_MOVE_DONE(msginfo->flags)) {
680 			msginfo->flags.tmp_flags &= ~MSG_MOVE_DONE;
681 			continue;
682 		}
683 		if (total > 100) {
684 			statusbar_progress_all(curnum, total, 100);
685 			if (curnum % 100 == 0)
686 				GTK_EVENTS_FLUSH();
687 			curnum++;
688 		}
689 
690 		file = g_strconcat(path, G_DIR_SEPARATOR_S, itos(msginfo->msgnum), NULL);
691 		if (file == NULL)
692 			continue;
693 
694 		if (claws_unlink(file) < 0) {
695 			g_free(file);
696 			continue;
697 		}
698 
699 		g_free(file);
700 	}
701 
702 	if (total > 100) {
703 		statusbar_progress_all(0,0,0);
704 		statusbar_pop_all();
705 	}
706 	if (item->mtime == last_mtime && !need_scan) {
707 		mh_set_mtime(folder, item);
708 	}
709 
710 	g_free(path);
711 	return 0;
712 }
713 
mh_remove_all_msg(Folder * folder,FolderItem * item)714 static gint mh_remove_all_msg(Folder *folder, FolderItem *item)
715 {
716 	gchar *path;
717 	gint val;
718 
719 	cm_return_val_if_fail(item != NULL, -1);
720 
721 	path = folder_item_get_path(item);
722 	cm_return_val_if_fail(path != NULL, -1);
723 	val = remove_all_numbered_files(path);
724 	g_free(path);
725 
726 	mh_write_sequences(item, TRUE);
727 
728 	return val;
729 }
730 
mh_is_msg_changed(Folder * folder,FolderItem * item,MsgInfo * msginfo)731 static gboolean mh_is_msg_changed(Folder *folder, FolderItem *item,
732 				  MsgInfo *msginfo)
733 {
734 #ifdef G_OS_WIN32
735 	GFile *f;
736 	GFileInfo *fi;
737 	GTimeVal tv;
738 	GError *error = NULL;
739 #else
740 	GStatBuf s;
741 	int r;
742 #endif
743 	gchar *path;
744 	gchar *parent_path;
745 
746 	parent_path = folder_item_get_path(item);
747 	path = g_strdup_printf("%s%c%d", parent_path,
748 			G_DIR_SEPARATOR, msginfo->msgnum);
749 	g_free(parent_path);
750 
751 #ifdef G_OS_WIN32
752 	f = g_file_new_for_path(path);
753 	g_free(path);
754 	fi = g_file_query_info(f, "standard::size,time::modified",
755 			G_FILE_QUERY_INFO_NONE, NULL, &error);
756 	if (error != NULL) {
757 		g_warning(error->message);
758 		g_error_free(error);
759 		g_object_unref(f);
760 		return TRUE;
761 	}
762 
763 	g_file_info_get_modification_time(fi, &tv);
764 	if (msginfo->size != g_file_info_get_size(fi) || (
765 			(msginfo->mtime - tv.tv_sec != 0) &&
766 			abs(msginfo->mtime - tv.tv_sec) != 3600)) {
767 		g_error_free(error);
768 		g_object_unref(f);
769 		return TRUE;
770 	}
771 #else
772 	r = g_stat(path, &s);
773 	g_free(path);
774 	if (r < 0 ||
775 	    msginfo->size  != s.st_size || (
776 		(msginfo->mtime - s.st_mtime != 0) &&
777 		(msginfo->mtime - s.st_mtime != 3600) &&
778 		(msginfo->mtime - s.st_mtime != -3600))) {
779 		return TRUE;
780 	}
781 #endif
782 
783 	return FALSE;
784 }
785 
mh_scan_tree(Folder * folder)786 static gint mh_scan_tree(Folder *folder)
787 {
788 	FolderItem *item;
789 
790 	cm_return_val_if_fail(folder != NULL, -1);
791 
792 	if (!folder->node) {
793 		item = folder_item_new(folder, folder->name, NULL);
794 		item->folder = folder;
795 		folder->node = item->node = g_node_new(item);
796 	} else
797 		item = FOLDER_ITEM(folder->node->data);
798 
799 	mh_create_tree(folder);
800 	mh_remove_missing_folder_items(folder);
801 	mh_scan_tree_recursive(item);
802 
803 	return 0;
804 }
805 
806 #define MAKE_DIR_IF_NOT_EXIST(dir) \
807 { \
808 	if (!is_dir_exist(dir)) { \
809 		if (is_file_exist(dir)) { \
810 			g_warning("File '%s' already exists. " \
811 				    "Can't create folder.", dir); \
812 			return -1; \
813 		} \
814 		if (make_dir_hier(dir) < 0) \
815 			return -1; \
816 		debug_print("Created dir '%s'\n", dir); \
817 	} \
818 }
819 
mh_create_tree(Folder * folder)820 static gint mh_create_tree(Folder *folder)
821 {
822 	gchar *rootpath, *f, *path;
823 
824 	cm_return_val_if_fail(folder != NULL, -1);
825 
826 	rootpath = LOCAL_FOLDER(folder)->rootpath;
827 #ifdef G_OS_UNIX
828 	if (*rootpath == '/') {
829 #elif defined G_OS_WIN32
830 	if (g_ascii_isalpha(*rootpath) && !strncmp(rootpath + 1, ":\\", 2)) {
831 #endif
832 		/* Folder path is absolute. */
833 		rootpath = g_strdup(rootpath);
834 	} else {
835 		/* Folder path is relative, using mail base dir. */
836 		rootpath = g_strconcat(get_mail_base_dir(), G_DIR_SEPARATOR_S,
837 				rootpath, NULL);
838 	}
839 
840 	MAKE_DIR_IF_NOT_EXIST(rootpath);
841 
842 	/* Create special directories as needed */
843 	if (folder->inbox != NULL &&
844 			folder->inbox->path != NULL)
845 		f = folder->inbox->path;
846 	else
847 		f = INBOX_DIR;
848 	path = g_strconcat(rootpath, G_DIR_SEPARATOR_S, f, NULL);
849 	MAKE_DIR_IF_NOT_EXIST(path);
850 	g_free(path);
851 
852 	if (folder->outbox != NULL &&
853 			folder->outbox->path != NULL)
854 		f = folder->outbox->path;
855 	else
856 		f = OUTBOX_DIR;
857 	path = g_strconcat(rootpath, G_DIR_SEPARATOR_S, f, NULL);
858 	MAKE_DIR_IF_NOT_EXIST(path);
859 	g_free(path);
860 
861 	if (folder->draft != NULL &&
862 			folder->draft->path != NULL)
863 		f = folder->draft->path;
864 	else
865 		f = DRAFT_DIR;
866 	path = g_strconcat(rootpath, G_DIR_SEPARATOR_S, f, NULL);
867 	MAKE_DIR_IF_NOT_EXIST(path);
868 	g_free(path);
869 
870 	if (folder->queue != NULL &&
871 			folder->queue->path != NULL)
872 		f = folder->queue->path;
873 	else
874 		f = QUEUE_DIR;
875 	path = g_strconcat(rootpath, G_DIR_SEPARATOR_S, f, NULL);
876 	MAKE_DIR_IF_NOT_EXIST(path);
877 	g_free(path);
878 
879 	if (folder->trash != NULL &&
880 			folder->trash->path != NULL)
881 		f = folder->trash->path;
882 	else
883 		f = TRASH_DIR;
884 	path = g_strconcat(rootpath, G_DIR_SEPARATOR_S, f, NULL);
885 	MAKE_DIR_IF_NOT_EXIST(path);
886 	g_free(path);
887 
888 	g_free(rootpath);
889 	return 0;
890 }
891 
892 #undef MAKE_DIR_IF_NOT_EXIST
893 
894 static gchar *mh_item_get_path(Folder *folder, FolderItem *item)
895 {
896 	gchar *folder_path, *path;
897 	gchar *real_path;
898 	cm_return_val_if_fail(folder != NULL, NULL);
899 	cm_return_val_if_fail(item != NULL, NULL);
900 
901 	folder_path = g_strdup(LOCAL_FOLDER(folder)->rootpath);
902 	cm_return_val_if_fail(folder_path != NULL, NULL);
903 
904         /* FIXME: [W32] The code below does not correctly merge
905            relative filenames; there should be a function to handle
906            this.  */
907         if ( !is_relative_filename (folder_path) ) {
908                 if (item->path)
909                         path = g_strconcat(folder_path, G_DIR_SEPARATOR_S,
910                                            item->path, NULL);
911                 else
912                         path = g_strdup(folder_path);
913         } else {
914                 if (item->path)
915                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
916                                            folder_path, G_DIR_SEPARATOR_S,
917                                            item->path, NULL);
918                 else
919                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
920                                            folder_path, NULL);
921         }
922 	g_free(folder_path);
923 	real_path = mh_filename_from_utf8(path);
924 	if (!is_dir_exist(real_path) && is_dir_exist(path)) {
925 		/* mmh, older version did put utf8 filenames instead of
926 		 * the correct encoding */
927 		if (g_rename(path, real_path) == 0)
928 			folder_item_scan(item);
929 	}
930 
931 	g_free(path);
932 	return real_path;
933 }
934 
935 static gboolean mh_renumber_msg(MsgInfo *info)
936 {
937 	gchar *src, *dest;
938 	gboolean result = FALSE;
939 	guint num;
940 	cm_return_val_if_fail(info != NULL, FALSE);
941 
942 	src = folder_item_fetch_msg(info->folder, info->msgnum);
943 	dest = mh_get_new_msg_filename(info->folder);
944 	num = info->folder->last_num + 1;
945 
946 	if (move_file(src, dest, FALSE) == 0) {
947 		msgcache_remove_msg(info->folder->cache, info->msgnum);
948 		info->msgnum = num;
949 		msgcache_add_msg(info->folder->cache, info);
950 		result = TRUE;
951 	}
952 
953 	g_free(src);
954 	g_free(dest);
955 
956 	return result;
957 }
958 
959 static FolderItem *mh_create_folder(Folder *folder, FolderItem *parent,
960 				    const gchar *name)
961 {
962 	gchar *path, *real_name;
963 	gchar *fullpath;
964 	FolderItem *new_item;
965 	gchar *mh_sequences_filename;
966 	FILE *mh_sequences_file;
967 
968 	cm_return_val_if_fail(folder != NULL, NULL);
969 	cm_return_val_if_fail(parent != NULL, NULL);
970 	cm_return_val_if_fail(name != NULL, NULL);
971 
972 	path = folder_item_get_path(parent);
973 	if (!is_dir_exist(path))
974 		if (make_dir_hier(path) != 0)
975 			return NULL;
976 
977 	real_name = mh_filename_from_utf8(name);
978 	fullpath = g_strconcat(path, G_DIR_SEPARATOR_S, real_name, NULL);
979 	g_free(real_name);
980 	g_free(path);
981 
982 	if (to_number(name) > 0) {
983 		MsgInfo *info = folder_item_get_msginfo(parent, to_number(name));
984 		if (info != NULL) {
985 			gboolean ok = mh_renumber_msg(info);
986 			procmsg_msginfo_free(&info);
987 			if (!ok) {
988 				g_free(fullpath);
989 				return NULL;
990 			}
991 		}
992 	}
993 
994 	if (make_dir(fullpath) < 0) {
995 		g_free(fullpath);
996 		return NULL;
997 	}
998 
999 	g_free(fullpath);
1000 
1001 	if (parent->path)
1002 		path = g_strconcat(parent->path, G_DIR_SEPARATOR_S, name,
1003 				   NULL);
1004 	else
1005 		path = g_strdup(name);
1006 	new_item = folder_item_new(folder, name, path);
1007 	folder_item_append(parent, new_item);
1008 
1009 	g_free(path);
1010 
1011 	path = folder_item_get_path(new_item);
1012 	mh_sequences_filename = g_strconcat(path, G_DIR_SEPARATOR_S,
1013 					    ".mh_sequences", NULL);
1014 	if ((mh_sequences_file = claws_fopen(mh_sequences_filename, "a+b")) != NULL) {
1015 		claws_fclose(mh_sequences_file);
1016 	}
1017 	g_free(mh_sequences_filename);
1018 	g_free(path);
1019 
1020 	return new_item;
1021 }
1022 
1023 static gint mh_rename_folder(Folder *folder, FolderItem *item,
1024 			     const gchar *name)
1025 {
1026  	gchar *real_name;
1027 	gchar *oldpath;
1028 	gchar *dirname;
1029 	gchar *newpath, *utf8newpath;
1030 	gchar *paths[2];
1031 
1032 	cm_return_val_if_fail(folder != NULL, -1);
1033 	cm_return_val_if_fail(item != NULL, -1);
1034 	cm_return_val_if_fail(item->path != NULL, -1);
1035 	cm_return_val_if_fail(name != NULL, -1);
1036 
1037 	oldpath = folder_item_get_path(item);
1038 	if (!is_dir_exist(oldpath))
1039 		make_dir_hier(oldpath);
1040 
1041 	dirname = g_path_get_dirname(oldpath);
1042 	real_name = mh_filename_from_utf8(name);
1043 	newpath = g_strconcat(dirname, G_DIR_SEPARATOR_S, real_name, NULL);
1044 	g_free(real_name);
1045 
1046 	if (g_rename(oldpath, newpath) < 0) {
1047 		FILE_OP_ERROR(oldpath, "rename");
1048 		g_free(oldpath);
1049 		g_free(newpath);
1050 		return -1;
1051 	}
1052 
1053 	g_free(oldpath);
1054 	g_free(newpath);
1055 
1056 	if (strchr(item->path, G_DIR_SEPARATOR) != NULL) {
1057 		dirname = g_path_get_dirname(item->path);
1058 		utf8newpath = g_strconcat(dirname, G_DIR_SEPARATOR_S,
1059 					  name, NULL);
1060 		g_free(dirname);
1061 	} else
1062 		utf8newpath = g_strdup(name);
1063 
1064 	g_free(item->name);
1065 	item->name = g_strdup(name);
1066 
1067 	paths[0] = g_strdup(item->path);
1068 	paths[1] = utf8newpath;
1069 	g_node_traverse(item->node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
1070 			mh_rename_folder_func, paths);
1071 
1072 	g_free(paths[0]);
1073 	g_free(paths[1]);
1074 	return 0;
1075 }
1076 
1077 static gint mh_remove_folder(Folder *folder, FolderItem *item)
1078 {
1079 	gchar *path;
1080 	gint ret;
1081 
1082 	cm_return_val_if_fail(folder != NULL, -1);
1083 	cm_return_val_if_fail(item != NULL, -1);
1084 	cm_return_val_if_fail(item->path != NULL, -1);
1085 
1086 	path = folder_item_get_path(item);
1087 	if ((ret = remove_dir_recursive(path)) < 0) {
1088 		g_warning("can't remove directory '%s'", path);
1089 		g_free(path);
1090 		return ret;
1091 	}
1092 
1093 	g_free(path);
1094 	folder_item_remove(item);
1095 	return 0;
1096 }
1097 
1098 static MsgInfo *mh_parse_msg(const gchar *file, FolderItem *item)
1099 {
1100 	MsgInfo *msginfo;
1101 	MsgFlags flags;
1102 
1103 	cm_return_val_if_fail(item != NULL, NULL);
1104 	cm_return_val_if_fail(file != NULL, NULL);
1105 
1106 	flags.perm_flags = MSG_NEW|MSG_UNREAD;
1107 	flags.tmp_flags = 0;
1108 
1109 	if (folder_has_parent_of_type(item, F_QUEUE)) {
1110 		MSG_SET_TMP_FLAGS(flags, MSG_QUEUED);
1111 	} else if (folder_has_parent_of_type(item, F_DRAFT)) {
1112 		MSG_SET_TMP_FLAGS(flags, MSG_DRAFT);
1113 	}
1114 
1115 	msginfo = procheader_parse_file(file, flags, FALSE, FALSE);
1116 	if (!msginfo) return NULL;
1117 
1118 	msginfo->msgnum = atoi(file);
1119 	msginfo->folder = item;
1120 
1121 	return msginfo;
1122 }
1123 
1124 static gboolean mh_remove_missing_folder_items_func(GNode *node, gpointer data)
1125 {
1126 	FolderItem *item;
1127 	gchar *path;
1128 
1129 	cm_return_val_if_fail(node->data != NULL, FALSE);
1130 
1131 	if (G_NODE_IS_ROOT(node))
1132 		return FALSE;
1133 
1134 	item = FOLDER_ITEM(node->data);
1135 
1136 	path = folder_item_get_path(item);
1137 	if (!is_dir_exist(path)) {
1138 		debug_print("folder '%s' not found. removing...\n", path?path:"(null)");
1139 		folder_item_remove(item);
1140 	}
1141 	g_free(path);
1142 
1143 	return FALSE;
1144 }
1145 
1146 static void mh_remove_missing_folder_items(Folder *folder)
1147 {
1148 	cm_return_if_fail(folder != NULL);
1149 
1150 	debug_print("searching missing folders...\n");
1151 
1152 	g_node_traverse(folder->node, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1153 			mh_remove_missing_folder_items_func, folder);
1154 }
1155 
1156 static void mh_scan_tree_recursive(FolderItem *item)
1157 {
1158 	Folder *folder;
1159 	GDir *dir;
1160 	const gchar *dir_name;
1161 	gchar *entry, *utf8entry, *utf8name, *path;
1162 	gint n_msg = 0;
1163 	GError *error = NULL;
1164 
1165 	cm_return_if_fail(item != NULL);
1166 	cm_return_if_fail(item->folder != NULL);
1167 
1168 	folder = item->folder;
1169 
1170 	path = folder_item_get_path(item);
1171 	debug_print("mh_scan_tree_recursive() opening '%s'\n", path);
1172 	dir = g_dir_open(path, 0, &error);
1173 	if (!dir) {
1174 		g_warning("failed to open directory '%s': %s (%d)",
1175 				path, error->message, error->code);
1176 		g_error_free(error);
1177 		g_free(path);
1178 		return;
1179 	}
1180 
1181 	debug_print("scanning %s ...\n",
1182 		    item->path ? item->path
1183 		    : LOCAL_FOLDER(item->folder)->rootpath);
1184 	if (folder->ui_func)
1185 		folder->ui_func(folder, item, folder->ui_func_data);
1186 
1187 	while ((dir_name = g_dir_read_name(dir)) != NULL) {
1188 		if (dir_name[0] == '.') continue;
1189 
1190 		entry = g_strconcat(path, G_DIR_SEPARATOR_S, dir_name, NULL);
1191 
1192 		utf8name = mh_filename_to_utf8(dir_name);
1193 		if (item->path)
1194 			utf8entry = g_strconcat(item->path, G_DIR_SEPARATOR_S,
1195 						utf8name, NULL);
1196 		else
1197 			utf8entry = g_strdup(utf8name);
1198 
1199 		if (g_file_test(entry, G_FILE_TEST_IS_DIR)) {
1200 			FolderItem *new_item = NULL;
1201 			GNode *node;
1202 
1203 			node = item->node;
1204 			for (node = node->children; node != NULL; node = node->next) {
1205 				FolderItem *cur_item = FOLDER_ITEM(node->data);
1206 				gchar *curpath = folder_item_get_path(cur_item);
1207 				if (!g_strcmp0(curpath, entry)) {
1208 					new_item = cur_item;
1209 					g_free(curpath);
1210 					break;
1211 				}
1212 				g_free(curpath);
1213 			}
1214 			if (!new_item) {
1215 				debug_print("new folder '%s' found.\n", entry);
1216 				new_item = folder_item_new(folder, utf8name, utf8entry);
1217 				folder_item_append(item, new_item);
1218 			}
1219 
1220 			if (!item->path) {
1221 				if (!folder->inbox &&
1222 				    !strcmp(dir_name, INBOX_DIR)) {
1223 					new_item->stype = F_INBOX;
1224 					folder->inbox = new_item;
1225 				} else if (!folder->outbox &&
1226 					   !strcmp(dir_name, OUTBOX_DIR)) {
1227 					new_item->stype = F_OUTBOX;
1228 					folder->outbox = new_item;
1229 				} else if (!folder->draft &&
1230 					   !strcmp(dir_name, DRAFT_DIR)) {
1231 					new_item->stype = F_DRAFT;
1232 					folder->draft = new_item;
1233 				} else if (!folder->queue &&
1234 					   !strcmp(dir_name, QUEUE_DIR)) {
1235 					new_item->stype = F_QUEUE;
1236 					folder->queue = new_item;
1237 				} else if (!folder->trash &&
1238 					   !strcmp(dir_name, TRASH_DIR)) {
1239 					new_item->stype = F_TRASH;
1240 					folder->trash = new_item;
1241 				}
1242 			}
1243 
1244 			mh_scan_tree_recursive(new_item);
1245 		} else if (to_number(dir_name) > 0) n_msg++;
1246 
1247 		g_free(entry);
1248 		g_free(utf8entry);
1249 		g_free(utf8name);
1250 	}
1251 
1252 	g_dir_close(dir);
1253 	g_free(path);
1254 
1255 	mh_set_mtime(folder, item);
1256 }
1257 
1258 static gboolean mh_rename_folder_func(GNode *node, gpointer data)
1259 {
1260 	FolderItem *item = node->data;
1261 	gchar **paths = data;
1262 	const gchar *oldpath = paths[0];
1263 	const gchar *newpath = paths[1];
1264 	gchar *base;
1265 	gchar *new_itempath;
1266 	gint oldpathlen;
1267 
1268 	oldpathlen = strlen(oldpath);
1269 	if (strncmp(oldpath, item->path, oldpathlen) != 0) {
1270 		g_warning("path doesn't match: %s, %s", oldpath, item->path);
1271 		return TRUE;
1272 	}
1273 
1274 	base = item->path + oldpathlen;
1275 	while (*base == G_DIR_SEPARATOR) base++;
1276 	if (*base == '\0')
1277 		new_itempath = g_strdup(newpath);
1278 	else
1279 		new_itempath = g_strconcat(newpath, G_DIR_SEPARATOR_S, base,
1280 					   NULL);
1281 	g_free(item->path);
1282 	item->path = new_itempath;
1283 
1284 	return FALSE;
1285 }
1286 
1287 static gchar *mh_filename_from_utf8(const gchar *path)
1288 {
1289 	gchar *real_path = g_filename_from_utf8(path, -1, NULL, NULL, NULL);
1290 
1291 	if (!real_path) {
1292 		g_warning("mh_filename_from_utf8: failed to convert character set");
1293 		real_path = g_strdup(path);
1294 	}
1295 
1296 	return real_path;
1297 }
1298 
1299 static gchar *mh_filename_to_utf8(const gchar *path)
1300 {
1301 	gchar *utf8path = g_filename_to_utf8(path, -1, NULL, NULL, NULL);
1302 	if (!utf8path) {
1303 		g_warning("mh_filename_to_utf8: failed to convert character set");
1304 		utf8path = g_strdup(path);
1305 	}
1306 
1307 	return utf8path;
1308 }
1309 
1310 static gint sort_cache_list_by_msgnum(gconstpointer a, gconstpointer b)
1311 {
1312 	MsgInfo *msginfo_a = (MsgInfo *) a;
1313 	MsgInfo *msginfo_b = (MsgInfo *) b;
1314 
1315 	return (msginfo_a->msgnum - msginfo_b->msgnum);
1316 }
1317 
1318 static gchar *get_unseen_seq_name(void)
1319 {
1320 	static gchar *seq_name = NULL;
1321 	if (!seq_name) {
1322 		gchar buf[BUFFSIZE];
1323 		gchar *tmp;
1324 		gchar *profile_path = g_strconcat(
1325 			get_home_dir(), G_DIR_SEPARATOR_S,
1326 			".mh_profile", NULL);
1327 		FILE *fp = claws_fopen(profile_path, "r");
1328 		if (fp) {
1329 			while (claws_fgets(buf, sizeof(buf), fp) != NULL) {
1330 				if (!strncmp(buf, "Unseen-Sequence:", strlen("Unseen-Sequence:"))) {
1331 					gchar *seq_tmp = buf+strlen("Unseen-Sequence:");
1332 					while (*seq_tmp == ' ')
1333 						seq_tmp++;
1334 					seq_name = g_strdup(seq_tmp);
1335 					seq_name = strretchomp(seq_name);
1336 					break;
1337 				}
1338 			}
1339 			claws_fclose(fp);
1340 		}
1341 		if (!seq_name)
1342 			seq_name = g_strdup("unseen");
1343 		tmp = g_strdup_printf("%s:", seq_name);
1344 		g_free(seq_name);
1345 		seq_name = tmp;
1346 	}
1347 	return seq_name;
1348 }
1349 
1350 static void mh_write_sequences(FolderItem *item, gboolean remove_unseen)
1351 {
1352 	gchar *mh_sequences_old, *mh_sequences_new;
1353 	FILE *mh_sequences_old_fp, *mh_sequences_new_fp;
1354 	gchar buf[BUFFSIZE];
1355 	gchar *path = NULL;
1356 	gboolean err = FALSE;
1357 	START_TIMING("");
1358 
1359 	if (!item)
1360 		return;
1361 
1362 	path = folder_item_get_path(item);
1363 
1364 	mh_sequences_old = g_strconcat(path, G_DIR_SEPARATOR_S,
1365 					    ".mh_sequences", NULL);
1366 	mh_sequences_new = g_strconcat(path, G_DIR_SEPARATOR_S,
1367 					    ".mh_sequences.new", NULL);
1368 	if ((mh_sequences_new_fp = claws_fopen(mh_sequences_new, "w+b")) != NULL) {
1369 		GSList *msglist = folder_item_get_msg_list(item);
1370 		GSList *cur;
1371 		MsgInfo *info = NULL;
1372 		gint start = -1, end = -1;
1373 		gchar *sequence = g_strdup("");
1374 		gint seq_len = 0;
1375 		msglist = g_slist_sort(msglist, sort_cache_list_by_msgnum);
1376 		cur = msglist;
1377 
1378 		/* write the unseen sequence if we don't have to scrap it */
1379 		if (!remove_unseen) do {
1380 			info = (MsgInfo *)(cur ? cur->data:NULL);
1381 			if (info && (MSG_IS_UNREAD(info->flags) || MSG_IS_NEW(info->flags))) {
1382 				if (start < 0)
1383 					start = end = info->msgnum;
1384 				else
1385 					end = info->msgnum;
1386 			} else {
1387 				if (start > 0 && end > 0) {
1388 					gchar tmp[32];
1389 					gint tmp_len = 0;
1390 					if (start != end)
1391 						snprintf(tmp, 31, " %d-%d", start, end);
1392 					else
1393 						snprintf(tmp, 31, " %d", start);
1394 
1395 					tmp_len = strlen(tmp);
1396 					sequence = g_realloc(sequence, seq_len+tmp_len+1);
1397 					strcpy(sequence+seq_len, tmp);
1398 					seq_len += tmp_len;
1399 
1400 					start = end = -1;
1401 				}
1402 			}
1403 			cur = cur ? cur->next:NULL;
1404 		} while (cur || (start > 0 && end > 0));
1405 		if (sequence && *sequence) {
1406 			if (fprintf(mh_sequences_new_fp, "%s%s\n",
1407 					get_unseen_seq_name(), sequence) < 0)
1408 				err = TRUE;
1409 			else
1410 				debug_print("wrote unseen sequence: '%s%s'\n",
1411 					get_unseen_seq_name(), sequence);
1412 		}
1413 		/* rewrite the rest of the file */
1414 		if ((mh_sequences_old_fp = claws_fopen(mh_sequences_old, "r+b")) != NULL) {
1415 			while (claws_fgets(buf, sizeof(buf), mh_sequences_old_fp) != NULL) {
1416 				if (strncmp(buf, get_unseen_seq_name(), strlen(get_unseen_seq_name())))
1417 					if (fprintf(mh_sequences_new_fp, "%s", buf) < 0) {
1418 						err = TRUE;
1419 						break;
1420 					}
1421 			}
1422 			claws_fclose(mh_sequences_old_fp);
1423 		}
1424 
1425 		if (claws_safe_fclose(mh_sequences_new_fp) == EOF)
1426 			err = TRUE;
1427 
1428 		if (!err) {
1429 			if (g_rename(mh_sequences_new, mh_sequences_old) < 0)
1430 				FILE_OP_ERROR(mh_sequences_new, "rename");
1431 		}
1432 		g_free(sequence);
1433 		procmsg_msg_list_free(msglist);
1434 	}
1435 	g_free(mh_sequences_old);
1436 	g_free(mh_sequences_new);
1437 	g_free(path);
1438 
1439 	END_TIMING();
1440 }
1441 
1442 static int mh_item_close(Folder *folder, FolderItem *item)
1443 {
1444 	time_t last_mtime = (time_t)0;
1445 	gboolean need_scan = mh_scan_required(item->folder, item);
1446 	last_mtime = item->mtime;
1447 
1448 	mh_write_sequences(item, FALSE);
1449 
1450 	if (item->mtime == last_mtime && !need_scan) {
1451 		mh_set_mtime(folder, item);
1452 	}
1453 
1454 	return 0;
1455 }
1456 
1457 static void mh_set_mtime(Folder *folder, FolderItem *item)
1458 {
1459 	GStatBuf s;
1460 	gchar *path = folder_item_get_path(item);
1461 
1462 	cm_return_if_fail(path != NULL);
1463 
1464 	if (g_stat(path, &s) < 0) {
1465 		FILE_OP_ERROR(path, "stat");
1466 		g_free(path);
1467 		return;
1468 	}
1469 
1470 	item->mtime = s.st_mtime;
1471 	debug_print("MH: forced mtime of %s to %"G_GSIZE_FORMAT"\n", item->name?item->name:"(null)", item->mtime);
1472 	g_free(path);
1473 }
1474