src/mh.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2007 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 #endif
  23
  24 #include "defs.h"
  25
  26 #include <glib.h>
  27 #include <glib/gi18n.h>
  28 #include <dirent.h>
  29 #include <sys/stat.h>
  30 #include <unistd.h>
  31 #include <string.h>
  32 #include <errno.h>
  33 #include <time.h>
  34
  35 #include "folder.h"
  36 #include "mh.h"
  37 #include "procmsg.h"
  38 #include "procheader.h"
  39 #include "utils.h"
  40 #include "codeconv.h"
  41 #include "statusbar.h"
  42 #include "gtkutils.h"
  43 #include "timing.h"
  44
  45 /* Define possible missing constants for Windows. */
  46 #ifdef G_OS_WIN32
  47 # ifndef S_IRGRP
  48 # define S_IRGRP 0
  49 # define S_IWGRP 0
  50 # endif
  51 # ifndef S_IROTH
  52 # define S_IROTH 0
  53 # define S_IWOTH 0
  54 # endif
  55 #endif
  56
  57
  58 static void     mh_folder_init          (Folder         *folder,
  59                                          const gchar    *name,
  60                                          const gchar    *path);
  61
  62 static Folder   *mh_folder_new          (const gchar    *name,
  63                                          const gchar    *path);
  64 static void     mh_folder_destroy       (Folder         *folder);
  65 static gchar   *mh_fetch_msg            (Folder         *folder,
  66                                          FolderItem     *item,
  67                                          gint            num);
  68 static MsgInfo *mh_get_msginfo          (Folder         *folder,
  69                                          FolderItem     *item,
  70                                          gint            num);
  71 static gint     mh_add_msg              (Folder         *folder,
  72                                          FolderItem     *dest,
  73                                          const gchar    *file,
  74                                          MsgFlags       *flags);
  75 static gint     mh_add_msgs             (Folder         *folder,
  76                                          FolderItem     *dest,
  77                                          GSList         *file_list,
  78                                          GRelation      *relation);
  79 static gint     mh_copy_msg             (Folder         *folder,
  80                                          FolderItem     *dest,
  81                                          MsgInfo        *msginfo);
  82 static gint     mh_copy_msgs            (Folder         *folder,
  83                                          FolderItem     *dest,
  84                                          MsgInfoList    *msglist,
  85                                          GRelation      *relation);
  86 static gint     mh_remove_msg           (Folder         *folder,
  87                                          FolderItem     *item,
  88                                          gint            num);
  89 static gint     mh_remove_msgs          (Folder         *folder,
  90                                          FolderItem     *item,
  91                                          MsgInfoList    *msglist,
  92                                          GRelation      *relation);
  93 static gint     mh_remove_all_msg       (Folder         *folder,
  94                                          FolderItem     *item);
  95 static gboolean mh_is_msg_changed       (Folder         *folder,
  96                                          FolderItem     *item,
  97                                          MsgInfo        *msginfo);
  98
  99 static gint     mh_get_num_list         (Folder         *folder,
 100                                          FolderItem     *item,
 101                                          GSList         **list,
 102                                          gboolean       *old_uids_valid);
 103 static gint     mh_scan_tree            (Folder         *folder);
 104
 105 static gint    mh_create_tree           (Folder         *folder);
 106 static FolderItem *mh_create_folder     (Folder         *folder,
 107                                          FolderItem     *parent,
 108                                          const gchar    *name);
 109 static gint    mh_rename_folder         (Folder         *folder,
 110                                          FolderItem     *item,
 111                                          const gchar    *name);
 112 static gint    mh_remove_folder         (Folder         *folder,
 113                                          FolderItem     *item);
 114
 115 static gchar   *mh_get_new_msg_filename         (FolderItem     *dest);
 116
 117 static MsgInfo *mh_parse_msg                    (const gchar    *file,
 118                                                  FolderItem     *item);
 119 static void     mh_remove_missing_folder_items  (Folder         *folder);
 120 static gchar    *mh_filename_from_utf8          (const gchar    *path);
 121 static gchar    *mh_filename_to_utf8            (const gchar    *path);
 122 static void     mh_scan_tree_recursive          (FolderItem     *item);
 123
 124 static gboolean mh_rename_folder_func           (GNode          *node,
 125                                                  gpointer        data);
 126 static gchar   *mh_item_get_path                (Folder *folder,
 127                                                  FolderItem *item);
 128
 129 static gboolean mh_scan_required        (Folder         *folder,
 130                                          FolderItem     *item);
 131 static void mh_set_mtime                (Folder         *folder,
 132                                          FolderItem *item);
 133 static int mh_item_close                (Folder         *folder,
 134                                          FolderItem     *item);
 135 #if 0
 136 static gint mh_get_flags                (Folder *folder, FolderItem *item,
 137                                          MsgInfoList *msginfo_list, GRelation *msgflags);
 138 #endif
 139 static void mh_write_sequences          (FolderItem     *item, gboolean remove_unseen);
 140
 141 static FolderClass mh_class;
 142
 143 FolderClass *mh_get_class(void)
 144 {
 145         if (mh_class.idstr == NULL) {
 146                 mh_class.type = F_MH;
 147                 mh_class.idstr = "mh";
 148                 mh_class.uistr = "MH";
 149
 150                 /* Folder functions */
 151                 mh_class.new_folder = mh_folder_new;
 152                 mh_class.destroy_folder = mh_folder_destroy;
 153                 mh_class.set_xml = folder_local_set_xml;
 154                 mh_class.get_xml = folder_local_get_xml;
 155                 mh_class.scan_tree = mh_scan_tree;
 156                 mh_class.create_tree = mh_create_tree;
 157
 158                 /* FolderItem functions */
 159                 mh_class.item_get_path = mh_item_get_path;
 160                 mh_class.create_folder = mh_create_folder;
 161                 mh_class.rename_folder = mh_rename_folder;
 162                 mh_class.remove_folder = mh_remove_folder;
 163                 mh_class.get_num_list = mh_get_num_list;
 164                 mh_class.scan_required = mh_scan_required;
 165                 mh_class.set_mtime = mh_set_mtime;
 166                 mh_class.close = mh_item_close;
 167                 mh_class.get_flags = NULL; /*mh_get_flags */;
 168
 169                 /* Message functions */
 170                 mh_class.get_msginfo = mh_get_msginfo;
 171                 mh_class.fetch_msg = mh_fetch_msg;
 172                 mh_class.add_msg = mh_add_msg;
 173                 mh_class.add_msgs = mh_add_msgs;
 174                 mh_class.copy_msg = mh_copy_msg;
 175                 mh_class.copy_msgs = mh_copy_msgs;
 176                 mh_class.remove_msg = mh_remove_msg;
 177                 mh_class.remove_msgs = mh_remove_msgs;
 178                 mh_class.remove_all_msg = mh_remove_all_msg;
 179                 mh_class.is_msg_changed = mh_is_msg_changed;
 180         }
 181
 182         return &mh_class;
 183 }
 184
 185 static Folder *mh_folder_new(const gchar *name, const gchar *path)
 186 {
 187         Folder *folder;
 188
 189         folder = (Folder *)g_new0(MHFolder, 1);
 190         folder->klass = &mh_class;
 191         mh_folder_init(folder, name, path);
 192
 193         return folder;
 194 }
 195
 196 static void mh_folder_destroy(Folder *folder)
 197 {
 198         folder_local_folder_destroy(LOCAL_FOLDER(folder));
 199 }
 200
 201 static void mh_folder_init(Folder *folder, const gchar *name, const gchar *path)
 202 {
 203         folder_local_folder_init(folder, name, path);
 204
 205 }
 206
 207 gboolean mh_scan_required(Folder *folder, FolderItem *item)
 208 {
 209         gchar *path;
 210         struct stat s;
 211
 212         path = folder_item_get_path(item);
 213         g_return_val_if_fail(path != NULL, FALSE);
 214
 215         if (stat(path, &s) < 0) {
 216                 FILE_OP_ERROR(path, "stat");
 217                 g_free(path);
 218                 return FALSE;
 219         }
 220
 221         if ((s.st_mtime > item->mtime) &&
 222                 (s.st_mtime - 3600 != item->mtime)) {
 223                 debug_print("MH scan required, folder updated: %s (%ld > %ld)\n",
 224                             path?path:"(null)",
 225                             (long int) s.st_mtime,
 226                             (long int) item->mtime);
 227                 g_free(path);
 228                 return TRUE;
 229         }
 230
 231         debug_print("MH scan not required: %s (%ld <= %ld)\n",
 232                     path?path:"(null)",
 233                     (long int) s.st_mtime,
 234                     (long int) item->mtime);
 235         g_free(path);
 236         return FALSE;
 237 }
 238
 239 static void mh_get_last_num(Folder *folder, FolderItem *item)
 240 {
 241         gchar *path;
 242         DIR *dp;
 243         struct dirent *d;
 244         gint max = 0;
 245         gint num;
 246
 247         g_return_if_fail(item != NULL);
 248
 249         debug_print("mh_get_last_num(): Scanning %s ...\n", item->path?item->path:"(null)");
 250
 251         path = folder_item_get_path(item);
 252         g_return_if_fail(path != NULL);
 253         if (change_dir(path) < 0) {
 254                 g_free(path);
 255                 return;
 256         }
 257         g_free(path);
 258
 259         if ((dp = opendir(".")) == NULL) {
 260                 FILE_OP_ERROR(item->path, "opendir");
 261                 return;
 262         }
 263
 264         while ((d = readdir(dp)) != NULL) {
 265                 if ((num = to_number(d->d_name)) > 0 &&
 266                     dirent_is_regular_file(d)) {
 267                         if (max < num)
 268                                 max = num;
 269                 }
 270                 if (num % 2000 == 0)
 271                         GTK_EVENTS_FLUSH();
 272         }
 273         closedir(dp);
 274
 275         debug_print("Last number in dir %s = %d\n", item->path?item->path:"(null)", max);
 276         item->last_num = max;
 277 }
 278
 279 gint mh_get_num_list(Folder *folder, FolderItem *item, GSList **list, gboolean *old_uids_valid)
 280 {
 281
 282         gchar *path;
 283         DIR *dp;
 284         struct dirent *d;
 285         gint num, nummsgs = 0;
 286
 287         g_return_val_if_fail(item != NULL, -1);
 288
 289         debug_print("mh_get_num_list(): Scanning %s ...\n", item->path?item->path:"(null)");
 290
 291         *old_uids_valid = TRUE;
 292
 293         path = folder_item_get_path(item);
 294         g_return_val_if_fail(path != NULL, -1);
 295         if (change_dir(path) < 0) {
 296                 g_free(path);
 297                 return -1;
 298         }
 299         g_free(path);
 300
 301         if ((dp = opendir(".")) == NULL) {
 302                 FILE_OP_ERROR(item->path, "opendir");
 303                 return -1;
 304         }
 305
 306         while ((d = readdir(dp)) != NULL) {
 307                 if ((num = to_number(d->d_name)) > 0) {
 308                         *list = g_slist_prepend(*list, GINT_TO_POINTER(num));
 309                         nummsgs++;
 310                 }
 311         }
 312         closedir(dp);
 313
 314         mh_set_mtime(folder, item);
 315         return nummsgs;
 316 }
 317
 318 static gchar *mh_fetch_msg(Folder *folder, FolderItem *item, gint num)
 319 {
 320         gchar *path;
 321         gchar *file;
 322
 323         g_return_val_if_fail(item != NULL, NULL);
 324         g_return_val_if_fail(num > 0, NULL);
 325
 326         path = folder_item_get_path(item);
 327         file = g_strconcat(path, G_DIR_SEPARATOR_S, itos(num), NULL);
 328
 329         if (!is_file_exist(file)) {
 330                 g_free(file);
 331                 g_free(path);
 332                 return NULL;
 333         }
 334         g_free(path);
 335         return file;
 336 }
 337
 338 static MsgInfo *mh_get_msginfo(Folder *folder, FolderItem *item, gint num)
 339 {
 340         MsgInfo *msginfo;
 341         gchar *file;
 342
 343         g_return_val_if_fail(item != NULL, NULL);
 344         if (num <= 0)
 345                 return NULL;
 346
 347         file = mh_fetch_msg(folder, item, num);
 348         if (!file) return NULL;
 349
 350         msginfo = mh_parse_msg(file, item);
 351         if (msginfo)
 352                 msginfo->msgnum = num;
 353
 354         g_free(file);
 355
 356         return msginfo;
 357 }
 358
 359 static gchar *mh_get_new_msg_filename(FolderItem *dest)
 360 {
 361         gchar *destfile;
 362         gchar *destpath;
 363
 364         destpath = folder_item_get_path(dest);
 365         g_return_val_if_fail(destpath != NULL, NULL);
 366
 367         if (!is_dir_exist(destpath))
 368                 make_dir_hier(destpath);
 369
 370         for (;;) {
 371                 destfile = g_strdup_printf("%s%c%d", destpath, G_DIR_SEPARATOR,
 372                                            dest->last_num + 1);
 373                 if (is_file_entry_exist(destfile)) {
 374                         dest->last_num++;
 375                         g_free(destfile);
 376                 } else
 377                         break;
 378         }
 379
 380         g_free(destpath);
 381
 382         return destfile;
 383 }
 384
 385 static gint mh_add_msg(Folder *folder, FolderItem *dest, const gchar *file, MsgFlags *flags)
 386 {
 387         gint ret;
 388         GSList file_list;
 389         MsgFileInfo fileinfo;
 390
 391         g_return_val_if_fail(file != NULL, -1);
 392
 393         fileinfo.msginfo = NULL;
 394         fileinfo.file = (gchar *)file;
 395         fileinfo.flags = flags;
 396         file_list.data = &fileinfo;
 397         file_list.next = NULL;
 398
 399         ret = mh_add_msgs(folder, dest, &file_list, NULL);
 400         return ret;
 401 }
 402
 403 static gint mh_add_msgs(Folder *folder, FolderItem *dest, GSList *file_list,
 404                  GRelation *relation)
 405 {
 406         gchar *destfile;
 407         GSList *cur;
 408         MsgFileInfo *fileinfo;
 409
 410         g_return_val_if_fail(dest != NULL, -1);
 411         g_return_val_if_fail(file_list != NULL, -1);
 412
 413         if (dest->last_num < 0) {
 414                 mh_get_last_num(folder, dest);
 415                 if (dest->last_num < 0) return -1;
 416         }
 417
 418         for (cur = file_list; cur != NULL; cur = cur->next) {
 419                 fileinfo = (MsgFileInfo *)cur->data;
 420
 421                 destfile = mh_get_new_msg_filename(dest);
 422                 if (destfile == NULL) return -1;
 423
 424 #ifdef G_OS_UNIX
 425                 if (link(fileinfo->file, destfile) < 0) {
 426 #endif
 427                         if (copy_file(fileinfo->file, destfile, TRUE) < 0) {
 428                                 g_warning(_("can't copy message %s to %s\n"),
 429                                           fileinfo->file, destfile);
 430                                 g_free(destfile);
 431                                 return -1;
 432                         }
 433 #ifdef G_OS_UNIX
 434                 }
 435 #endif
 436
 437                 if (relation != NULL)
 438                         g_relation_insert(relation, fileinfo, GINT_TO_POINTER(dest->last_num + 1));
 439                 g_free(destfile);
 440                 dest->last_num++;
 441         }
 442         mh_write_sequences(dest, TRUE);
 443         return dest->last_num;
 444 }
 445
 446 static gint mh_copy_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
 447 {
 448         GSList msglist;
 449
 450         g_return_val_if_fail(msginfo != NULL, -1);
 451
 452         msglist.data = msginfo;
 453         msglist.next = NULL;
 454
 455         return mh_copy_msgs(folder, dest, &msglist, NULL);
 456 }
 457
 458 static gint mh_copy_msgs(Folder *folder, FolderItem *dest, MsgInfoList *msglist,
 459                          GRelation *relation)
 460 {
 461         gboolean dest_need_scan = FALSE;
 462         gboolean src_need_scan = FALSE;
 463         FolderItem *src = NULL;
 464         gchar *srcfile;
 465         gchar *destfile;
 466         gint filemode = 0;
 467         FolderItemPrefs *prefs;
 468         MsgInfo *msginfo = NULL;
 469         MsgInfoList *cur = NULL;
 470         gint curnum = 0, total = 0;
 471         gchar *srcpath = NULL;
 472         gboolean full_fetch = FALSE;
 473         time_t last_dest_mtime = (time_t)0;
 474         time_t last_src_mtime = (time_t)0;
 475
 476         g_return_val_if_fail(dest != NULL, -1);
 477         g_return_val_if_fail(msglist != NULL, -1);
 478
 479         msginfo = (MsgInfo *)msglist->data;
 480
 481         g_return_val_if_fail(msginfo != NULL, -1);
 482
 483         if (msginfo->folder == dest) {
 484                 g_warning("the src folder is identical to the dest.\n");
 485                 return -1;
 486         }
 487
 488         if (msginfo->folder->folder != dest->folder)
 489                 full_fetch = TRUE;
 490
 491         if (FOLDER_TYPE(msginfo->folder->folder) == F_MH) {
 492                 src = msginfo->folder;
 493         }
 494
 495         if (dest->last_num < 0) {
 496                 mh_get_last_num(folder, dest);
 497                 if (dest->last_num < 0) return -1;
 498         }
 499
 500         prefs = dest->prefs;
 501
 502         srcpath = folder_item_get_path(msginfo->folder);
 503
 504         dest_need_scan = mh_scan_required(dest->folder, dest);
 505         last_dest_mtime = dest->mtime;
 506
 507         if (src) {
 508                 src_need_scan = mh_scan_required(src->folder, src);
 509                 last_src_mtime = src->mtime;
 510         }
 511
 512         total = g_slist_length(msglist);
 513         if (total > 100) {
 514                 if (MSG_IS_MOVE(msginfo->flags))
 515                         statusbar_print_all(_("Moving messages..."));
 516                 else
 517                         statusbar_print_all(_("Copying messages..."));
 518         }
 519         for (cur = msglist; cur; cur = cur->next) {
 520                 msginfo = (MsgInfo *)cur->data;
 521                 if (!msginfo) {
 522                         goto err_reset_status;
 523                 }
 524                 if (!full_fetch) {
 525                         srcfile = g_strconcat(srcpath,
 526                                 G_DIR_SEPARATOR_S,
 527                                 itos(msginfo->msgnum), NULL);
 528                 } else {
 529                         srcfile = procmsg_get_message_file(msginfo);
 530                 }
 531                 if (!srcfile) {
 532                         goto err_reset_status;
 533                 }
 534                 destfile = mh_get_new_msg_filename(dest);
 535                 if (!destfile) {
 536                         g_free(srcfile);
 537                         goto err_reset_status;
 538                 }
 539
 540                 if (total > 100) {
 541                         statusbar_progress_all(curnum, total, 100);
 542                         if (curnum % 100 == 0)
 543                                 GTK_EVENTS_FLUSH();
 544                         curnum++;
 545                 }
 546
 547                 debug_print("Copying message %s%c%d to %s ...\n",
 548                             msginfo->folder->path, G_DIR_SEPARATOR,
 549                             msginfo->msgnum, dest->path);
 550
 551
 552                 if (MSG_IS_MOVE(msginfo->flags)) {
 553                         msginfo->flags.tmp_flags &= ~MSG_MOVE_DONE;
 554                         if (move_file(srcfile, destfile, TRUE) < 0) {
 555                                 FILE_OP_ERROR(srcfile, "move");
 556                                 if (copy_file(srcfile, destfile, TRUE) < 0) {
 557                                         FILE_OP_ERROR(srcfile, "copy");
 558                                         g_free(srcfile);
 559                                         g_free(destfile);
 560                                         goto err_reset_status;
 561                                 }
 562                         } else {
 563                                 /* say unlinking's not necessary */
 564                                 msginfo->flags.tmp_flags |= MSG_MOVE_DONE;
 565                         }
 566                 } else if (copy_file(srcfile, destfile, TRUE) < 0) {
 567                         FILE_OP_ERROR(srcfile, "copy");
 568                         g_free(srcfile);
 569                         g_free(destfile);
 570                         goto err_reset_status;
 571                 }
 572                 if (prefs && prefs->enable_folder_chmod && prefs->folder_chmod) {
 573                         if (chmod(destfile, prefs->folder_chmod) < 0)
 574                                 FILE_OP_ERROR(destfile, "chmod");
 575
 576                         /* for mark file */
 577                         filemode = prefs->folder_chmod;
 578                         if (filemode & S_IRGRP) filemode |= S_IWGRP;
 579                         if (filemode & S_IROTH) filemode |= S_IWOTH;
 580                 }
 581                 if (relation)
 582                         g_relation_insert(relation, msginfo, GINT_TO_POINTER(dest->last_num+1));
 583                 g_free(srcfile);
 584                 g_free(destfile);
 585                 dest->last_num++;
 586         }
 587
 588         g_free(srcpath);
 589         mh_write_sequences(dest, TRUE);
 590
 591         if (dest->mtime == last_dest_mtime && !dest_need_scan) {
 592                 mh_set_mtime(folder, dest);
 593         }
 594
 595         if (src && src->mtime == last_src_mtime && !src_need_scan) {
 596                 mh_set_mtime(folder, src);
 597         }
 598
 599         if (total > 100) {
 600                 statusbar_progress_all(0,0,0);
 601                 statusbar_pop_all();
 602         }
 603         return dest->last_num;
 604 err_reset_status:
 605         g_free(srcpath);
 606         mh_write_sequences(dest, TRUE);
 607         if (total > 100) {
 608                 statusbar_progress_all(0,0,0);
 609                 statusbar_pop_all();
 610         }
 611         return -1;
 612
 613 }
 614
 615 static gint mh_remove_msg(Folder *folder, FolderItem *item, gint num)
 616 {
 617         gboolean need_scan = FALSE;
 618         time_t last_mtime = (time_t)0;
 619         gchar *file;
 620
 621         g_return_val_if_fail(item != NULL, -1);
 622
 623         file = mh_fetch_msg(folder, item, num);
 624         g_return_val_if_fail(file != NULL, -1);
 625
 626         need_scan = mh_scan_required(folder, item);
 627         last_mtime = item->mtime;
 628
 629         if (claws_unlink(file) < 0) {
 630                 FILE_OP_ERROR(file, "unlink");
 631                 g_free(file);
 632                 return -1;
 633         }
 634
 635         if (item->mtime == last_mtime && !need_scan) {
 636                 mh_set_mtime(folder, item);
 637         }
 638         g_free(file);
 639         return 0;
 640 }
 641
 642 static gint mh_remove_msgs(Folder *folder, FolderItem *item,
 643                     MsgInfoList *msglist, GRelation *relation)
 644 {
 645         gboolean need_scan = FALSE;
 646         gchar *path, *file;
 647         time_t last_mtime = (time_t)0;
 648         MsgInfoList *cur;
 649         gint total = 0, curnum = 0;
 650
 651         g_return_val_if_fail(item != NULL, -1);
 652
 653         path = folder_item_get_path(item);
 654
 655         need_scan = mh_scan_required(folder, item);
 656         last_mtime = item->mtime;
 657
 658         total = g_slist_length(msglist);
 659         if (total > 100) {
 660                 statusbar_print_all(_("Deleting messages..."));
 661         }
 662
 663         for (cur = msglist; cur; cur = cur->next) {
 664                 MsgInfo *msginfo = (MsgInfo *)cur->data;
 665                 if (msginfo == NULL)
 666                         continue;
 667                 if (MSG_IS_MOVE(msginfo->flags) && MSG_IS_MOVE_DONE(msginfo->flags)) {
 668                         msginfo->flags.tmp_flags &= ~MSG_MOVE_DONE;
 669                         continue;
 670                 }
 671                 if (total > 100) {
 672                         statusbar_progress_all(curnum, total, 100);
 673                         if (curnum % 100 == 0)
 674                                 GTK_EVENTS_FLUSH();
 675                         curnum++;
 676                 }
 677
 678                 file = g_strconcat(path, G_DIR_SEPARATOR_S, itos(msginfo->msgnum), NULL);
 679                 if (file == NULL)
 680                         continue;
 681
 682                 if (claws_unlink(file) < 0) {
 683                         g_free(file);
 684                         continue;
 685                 }
 686
 687                 g_free(file);
 688         }
 689
 690         if (total > 100) {
 691                 statusbar_progress_all(0,0,0);
 692                 statusbar_pop_all();
 693         }
 694         if (item->mtime == last_mtime && !need_scan) {
 695                 mh_set_mtime(folder, item);
 696         }
 697
 698         g_free(path);
 699         return 0;
 700 }
 701
 702 static gint mh_remove_all_msg(Folder *folder, FolderItem *item)
 703 {
 704         gchar *path;
 705         gint val;
 706
 707         g_return_val_if_fail(item != NULL, -1);
 708
 709         path = folder_item_get_path(item);
 710         g_return_val_if_fail(path != NULL, -1);
 711         val = remove_all_numbered_files(path);
 712         g_free(path);
 713
 714         mh_write_sequences(item, TRUE);
 715
 716         return val;
 717 }
 718
 719 static gboolean mh_is_msg_changed(Folder *folder, FolderItem *item,
 720                                   MsgInfo *msginfo)
 721 {
 722         struct stat s;
 723
 724         if (g_stat(itos(msginfo->msgnum), &s) < 0 ||
 725             msginfo->size  != s.st_size || (
 726                 (msginfo->mtime - s.st_mtime != 0) &&
 727                 (msginfo->mtime - s.st_mtime != 3600) &&
 728                 (msginfo->mtime - s.st_mtime != -3600)))
 729                 return TRUE;
 730
 731         return FALSE;
 732 }
 733
 734 static gint mh_scan_tree(Folder *folder)
 735 {
 736         FolderItem *item;
 737         gchar *rootpath;
 738
 739         g_return_val_if_fail(folder != NULL, -1);
 740
 741         if (!folder->node) {
 742                 item = folder_item_new(folder, folder->name, NULL);
 743                 item->folder = folder;
 744                 folder->node = item->node = g_node_new(item);
 745         } else
 746                 item = FOLDER_ITEM(folder->node->data);
 747
 748         rootpath = folder_item_get_path(item);
 749         if (change_dir(rootpath) < 0) {
 750                 g_free(rootpath);
 751                 return -1;
 752         }
 753         g_free(rootpath);
 754
 755         mh_create_tree(folder);
 756         mh_remove_missing_folder_items(folder);
 757         mh_scan_tree_recursive(item);
 758
 759         return 0;
 760 }
 761
 762 #define MAKE_DIR_IF_NOT_EXIST(dir) \
 763 { \
 764         if (!is_dir_exist(dir)) { \
 765                 if (is_file_exist(dir)) { \
 766                         g_warning("File `%s' already exists.\n" \
 767                                     "Can't create folder.", dir); \
 768                         return -1; \
 769                 } \
 770                 if (make_dir_hier(dir) < 0) \
 771                         return -1; \
 772         } \
 773 }
 774
 775 static gint mh_create_tree(Folder *folder)
 776 {
 777         gchar *rootpath;
 778
 779         g_return_val_if_fail(folder != NULL, -1);
 780
 781         CHDIR_RETURN_VAL_IF_FAIL(get_mail_base_dir(), -1);
 782         rootpath = LOCAL_FOLDER(folder)->rootpath;
 783         MAKE_DIR_IF_NOT_EXIST(rootpath);
 784         CHDIR_RETURN_VAL_IF_FAIL(rootpath, -1);
 785         MAKE_DIR_IF_NOT_EXIST(INBOX_DIR);
 786         MAKE_DIR_IF_NOT_EXIST(OUTBOX_DIR);
 787         MAKE_DIR_IF_NOT_EXIST(QUEUE_DIR);
 788         MAKE_DIR_IF_NOT_EXIST(DRAFT_DIR);
 789         MAKE_DIR_IF_NOT_EXIST(TRASH_DIR);
 790
 791         return 0;
 792 }
 793
 794 #undef MAKE_DIR_IF_NOT_EXIST
 795
 796 static gchar *mh_item_get_path(Folder *folder, FolderItem *item)
 797 {
 798         gchar *folder_path, *path;
 799         gchar *real_path;
 800         g_return_val_if_fail(folder != NULL, NULL);
 801         g_return_val_if_fail(item != NULL, NULL);
 802
 803         folder_path = g_strdup(LOCAL_FOLDER(folder)->rootpath);
 804         g_return_val_if_fail(folder_path != NULL, NULL);
 805
 806         /* FIXME: [W32] The code below does not correctly merge
 807            relative filenames; there should be a function to handle
 808            this.  */
 809         if ( !is_relative_filename (folder_path) ) {
 810                 if (item->path)
 811                         path = g_strconcat(folder_path, G_DIR_SEPARATOR_S,
 812                                            item->path, NULL);
 813                 else
 814                         path = g_strdup(folder_path);
 815         } else {
 816                 if (item->path)
 817                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 818                                            folder_path, G_DIR_SEPARATOR_S,
 819                                            item->path, NULL);
 820                 else
 821                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 822                                            folder_path, NULL);
 823         }
 824         g_free(folder_path);
 825         real_path = mh_filename_from_utf8(path);
 826         if (!is_dir_exist(real_path) && is_dir_exist(path)) {
 827                 /* mmh, older version did put utf8 filenames instead of
 828                  * the correct encoding */
 829                 rename(path, real_path);
 830                 folder_item_scan(item);
 831         }
 832
 833         g_free(path);
 834         return real_path;
 835 }
 836
 837 static FolderItem *mh_create_folder(Folder *folder, FolderItem *parent,
 838                                     const gchar *name)
 839 {
 840         gchar *path, *real_name;
 841         gchar *fullpath;
 842         FolderItem *new_item;
 843         gchar *mh_sequences_filename;
 844         FILE *mh_sequences_file;
 845
 846         g_return_val_if_fail(folder != NULL, NULL);
 847         g_return_val_if_fail(parent != NULL, NULL);
 848         g_return_val_if_fail(name != NULL, NULL);
 849
 850         path = folder_item_get_path(parent);
 851         if (!is_dir_exist(path))
 852                 if (make_dir_hier(path) != 0)
 853                         return NULL;
 854
 855         real_name = mh_filename_from_utf8(name);
 856         fullpath = g_strconcat(path, G_DIR_SEPARATOR_S, real_name, NULL);
 857         g_free(real_name);
 858         g_free(path);
 859
 860         if (make_dir(fullpath) < 0) {
 861                 g_free(fullpath);
 862                 return NULL;
 863         }
 864
 865         g_free(fullpath);
 866
 867         if (parent->path)
 868                 path = g_strconcat(parent->path, G_DIR_SEPARATOR_S, name,
 869                                    NULL);
 870         else
 871                 path = g_strdup(name);
 872         new_item = folder_item_new(folder, name, path);
 873         folder_item_append(parent, new_item);
 874
 875         g_free(path);
 876
 877         path = folder_item_get_path(new_item);
 878         mh_sequences_filename = g_strconcat(path, G_DIR_SEPARATOR_S,
 879                                             ".mh_sequences", NULL);
 880         if ((mh_sequences_file = g_fopen(mh_sequences_filename, "a+b")) != NULL) {
 881                 fclose(mh_sequences_file);
 882         }
 883         g_free(mh_sequences_filename);
 884         g_free(path);
 885
 886         return new_item;
 887 }
 888
 889 static gint mh_rename_folder(Folder *folder, FolderItem *item,
 890                              const gchar *name)
 891 {
 892         gchar *real_name;
 893         gchar *oldpath;
 894         gchar *dirname;
 895         gchar *newpath, *utf8newpath;
 896         gchar *paths[2];
 897
 898         g_return_val_if_fail(folder != NULL, -1);
 899         g_return_val_if_fail(item != NULL, -1);
 900         g_return_val_if_fail(item->path != NULL, -1);
 901         g_return_val_if_fail(name != NULL, -1);
 902
 903         oldpath = folder_item_get_path(item);
 904         if (!is_dir_exist(oldpath))
 905                 make_dir_hier(oldpath);
 906
 907         dirname = g_path_get_dirname(oldpath);
 908         real_name = mh_filename_from_utf8(name);
 909         newpath = g_strconcat(dirname, G_DIR_SEPARATOR_S, real_name, NULL);
 910         g_free(real_name);
 911
 912         if (g_rename(oldpath, newpath) < 0) {
 913                 FILE_OP_ERROR(oldpath, "rename");
 914                 g_free(oldpath);
 915                 g_free(newpath);
 916                 return -1;
 917         }
 918
 919         g_free(oldpath);
 920         g_free(newpath);
 921
 922         if (strchr(item->path, G_DIR_SEPARATOR) != NULL) {
 923                 dirname = g_path_get_dirname(item->path);
 924                 utf8newpath = g_strconcat(dirname, G_DIR_SEPARATOR_S,
 925                                           name, NULL);
 926                 g_free(dirname);
 927         } else
 928                 utf8newpath = g_strdup(name);
 929
 930         g_free(item->name);
 931         item->name = g_strdup(name);
 932
 933         paths[0] = g_strdup(item->path);
 934         paths[1] = utf8newpath;
 935         g_node_traverse(item->node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 936                         mh_rename_folder_func, paths);
 937
 938         g_free(paths[0]);
 939         g_free(paths[1]);
 940         return 0;
 941 }
 942
 943 static gint mh_remove_folder(Folder *folder, FolderItem *item)
 944 {
 945         gchar *path;
 946
 947         g_return_val_if_fail(folder != NULL, -1);
 948         g_return_val_if_fail(item != NULL, -1);
 949         g_return_val_if_fail(item->path != NULL, -1);
 950
 951         path = folder_item_get_path(item);
 952         if (remove_dir_recursive(path) < 0) {
 953                 g_warning("can't remove directory `%s'\n", path);
 954                 g_free(path);
 955                 return -1;
 956         }
 957
 958         g_free(path);
 959         folder_item_remove(item);
 960         return 0;
 961 }
 962
 963 static MsgInfo *mh_parse_msg(const gchar *file, FolderItem *item)
 964 {
 965         MsgInfo *msginfo;
 966         MsgFlags flags;
 967
 968         g_return_val_if_fail(item != NULL, NULL);
 969         g_return_val_if_fail(file != NULL, NULL);
 970
 971         flags.perm_flags = MSG_NEW|MSG_UNREAD;
 972         flags.tmp_flags = 0;
 973
 974         if (folder_has_parent_of_type(item, F_QUEUE)) {
 975                 MSG_SET_TMP_FLAGS(flags, MSG_QUEUED);
 976         } else if (folder_has_parent_of_type(item, F_DRAFT)) {
 977                 MSG_SET_TMP_FLAGS(flags, MSG_DRAFT);
 978         }
 979
 980         msginfo = procheader_parse_file(file, flags, FALSE, FALSE);
 981         if (!msginfo) return NULL;
 982
 983         msginfo->msgnum = atoi(file);
 984         msginfo->folder = item;
 985
 986         return msginfo;
 987 }
 988
 989 static gboolean mh_remove_missing_folder_items_func(GNode *node, gpointer data)
 990 {
 991         FolderItem *item;
 992         gchar *path;
 993
 994         g_return_val_if_fail(node->data != NULL, FALSE);
 995
 996         if (G_NODE_IS_ROOT(node))
 997                 return FALSE;
 998
 999         item = FOLDER_ITEM(node->data);
1000
1001         path = folder_item_get_path(item);
1002         if (!is_dir_exist(path)) {
1003                 debug_print("folder '%s' not found. removing...\n", path?path:"(null)");
1004                 folder_item_remove(item);
1005         }
1006         g_free(path);
1007
1008         return FALSE;
1009 }
1010
1011 static void mh_remove_missing_folder_items(Folder *folder)
1012 {
1013         g_return_if_fail(folder != NULL);
1014
1015         debug_print("searching missing folders...\n");
1016
1017         g_node_traverse(folder->node, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1018                         mh_remove_missing_folder_items_func, folder);
1019 }
1020
1021 static void mh_scan_tree_recursive(FolderItem *item)
1022 {
1023         Folder *folder;
1024 #ifdef G_OS_WIN32
1025         GDir *dir;
1026 #else
1027         DIR *dp;
1028         struct dirent *d;
1029 #endif
1030         const gchar *dir_name;
1031         struct stat s;
1032         gchar *real_path, *entry, *utf8entry, *utf8name;
1033         gint n_msg = 0;
1034
1035         g_return_if_fail(item != NULL);
1036         g_return_if_fail(item->folder != NULL);
1037
1038         folder = item->folder;
1039
1040         real_path = item->path ? mh_filename_from_utf8(item->path) : g_strdup(".");
1041 #ifdef G_OS_WIN32
1042         dir = g_dir_open(real_path, 0, NULL);
1043         if (!dir) {
1044                 g_warning("failed to open directory: %s\n", real_path);
1045                 g_free(real_path);
1046                 return;
1047         }
1048 #else
1049         dp = opendir(real_path);
1050         if (!dp) {
1051                 FILE_OP_ERROR(real_path, "opendir");
1052                 return;
1053         }
1054 #endif
1055         g_free(real_path);
1056
1057         debug_print("scanning %s ...\n",
1058                     item->path ? item->path
1059                     : LOCAL_FOLDER(item->folder)->rootpath);
1060         if (folder->ui_func)
1061                 folder->ui_func(folder, item, folder->ui_func_data);
1062
1063 #ifdef G_OS_WIN32
1064         while ((dir_name = g_dir_read_name(dir)) != NULL) {
1065 #else
1066         while ((d = readdir(dp)) != NULL) {
1067                 dir_name = d->d_name;
1068 #endif
1069                 if (dir_name[0] == '.') continue;
1070
1071                 utf8name = mh_filename_to_utf8(dir_name);
1072                 if (item->path)
1073                         utf8entry = g_strconcat(item->path, G_DIR_SEPARATOR_S,
1074                                                 utf8name, NULL);
1075                 else
1076                         utf8entry = g_strdup(utf8name);
1077                 entry = mh_filename_from_utf8(utf8entry);
1078
1079                 if (
1080 #if !defined(G_OS_WIN32) && !defined(MAEMO) && defined(HAVE_DIRENT_D_TYPE)
1081                         d->d_type == DT_DIR ||
1082                         (d->d_type == DT_UNKNOWN &&
1083 #endif
1084                         g_stat(entry, &s) == 0 && S_ISDIR(s.st_mode)
1085 #if !defined(G_OS_WIN32) && !defined(MAEMO) && defined(HAVE_DIRENT_D_TYPE)
1086                         )
1087 #endif
1088                    ) {
1089                         FolderItem *new_item = NULL;
1090                         GNode *node;
1091
1092                         node = item->node;
1093                         for (node = node->children; node != NULL; node = node->next) {
1094                                 FolderItem *cur_item = FOLDER_ITEM(node->data);
1095                                 gchar *curpath = mh_filename_from_utf8(cur_item->path);
1096                                 if (!strcmp2(curpath, entry)) {
1097                                         new_item = cur_item;
1098                                         g_free(curpath);
1099                                         break;
1100                                 }
1101                                 g_free(curpath);
1102                         }
1103                         if (!new_item) {
1104                                 debug_print("new folder '%s' found.\n", entry);
1105                                 new_item = folder_item_new(folder, utf8name, utf8entry);
1106                                 folder_item_append(item, new_item);
1107                         }
1108
1109                         if (!item->path) {
1110                                 if (!folder->inbox &&
1111                                     !strcmp(dir_name, INBOX_DIR)) {
1112                                         new_item->stype = F_INBOX;
1113                                         folder->inbox = new_item;
1114                                 } else if (!folder->outbox &&
1115                                            !strcmp(dir_name, OUTBOX_DIR)) {
1116                                         new_item->stype = F_OUTBOX;
1117                                         folder->outbox = new_item;
1118                                 } else if (!folder->draft &&
1119                                            !strcmp(dir_name, DRAFT_DIR)) {
1120                                         new_item->stype = F_DRAFT;
1121                                         folder->draft = new_item;
1122                                 } else if (!folder->queue &&
1123                                            !strcmp(dir_name, QUEUE_DIR)) {
1124                                         new_item->stype = F_QUEUE;
1125                                         folder->queue = new_item;
1126                                 } else if (!folder->trash &&
1127                                            !strcmp(dir_name, TRASH_DIR)) {
1128                                         new_item->stype = F_TRASH;
1129                                         folder->trash = new_item;
1130                                 }
1131                         }
1132
1133                         mh_scan_tree_recursive(new_item);
1134                 } else if (to_number(dir_name) > 0) n_msg++;
1135
1136                 g_free(entry);
1137                 g_free(utf8entry);
1138                 g_free(utf8name);
1139         }
1140
1141 #ifdef G_OS_WIN32
1142         g_dir_close(dir);
1143 #else
1144         closedir(dp);
1145 #endif
1146
1147         mh_set_mtime(folder, item);
1148 }
1149
1150 static gboolean mh_rename_folder_func(GNode *node, gpointer data)
1151 {
1152         FolderItem *item = node->data;
1153         gchar **paths = data;
1154         const gchar *oldpath = paths[0];
1155         const gchar *newpath = paths[1];
1156         gchar *base;
1157         gchar *new_itempath;
1158         gint oldpathlen;
1159
1160         oldpathlen = strlen(oldpath);
1161         if (strncmp(oldpath, item->path, oldpathlen) != 0) {
1162                 g_warning("path doesn't match: %s, %s\n", oldpath, item->path);
1163                 return TRUE;
1164         }
1165
1166         base = item->path + oldpathlen;
1167         while (*base == G_DIR_SEPARATOR) base++;
1168         if (*base == '\0')
1169                 new_itempath = g_strdup(newpath);
1170         else
1171                 new_itempath = g_strconcat(newpath, G_DIR_SEPARATOR_S, base,
1172                                            NULL);
1173         g_free(item->path);
1174         item->path = new_itempath;
1175
1176         return FALSE;
1177 }
1178
1179 static gchar *mh_filename_from_utf8(const gchar *path)
1180 {
1181         gchar *real_path = g_filename_from_utf8(path, -1, NULL, NULL, NULL);
1182
1183         if (!real_path) {
1184                 g_warning("mh_filename_from_utf8: failed to convert character set\n");
1185                 real_path = g_strdup(path);
1186         }
1187
1188         return real_path;
1189 }
1190
1191 static gchar *mh_filename_to_utf8(const gchar *path)
1192 {
1193         gchar *utf8path = g_filename_to_utf8(path, -1, NULL, NULL, NULL);
1194         if (!utf8path) {
1195                 g_warning("mh_filename_to_utf8: failed to convert character set\n");
1196                 utf8path = g_strdup(path);
1197         }
1198
1199         return utf8path;
1200 }
1201
1202 static gint sort_cache_list_by_msgnum(gconstpointer a, gconstpointer b)
1203 {
1204         MsgInfo *msginfo_a = (MsgInfo *) a;
1205         MsgInfo *msginfo_b = (MsgInfo *) b;
1206
1207         return (msginfo_a->msgnum - msginfo_b->msgnum);
1208 }
1209
1210 static gchar *get_unseen_seq_name(void)
1211 {
1212         static gchar *seq_name = NULL;
1213         if (!seq_name) {
1214                 gchar buf[BUFFSIZE];
1215                 gchar *tmp;
1216                 gchar *profile_path = g_strconcat(
1217                         get_home_dir(), G_DIR_SEPARATOR_S,
1218                         ".mh_profile", NULL);
1219                 FILE *fp = g_fopen(profile_path, "r");
1220                 if (fp) {
1221                         while (fgets(buf, sizeof(buf), fp) != NULL) {
1222                                 if (!strncmp(buf, "Unseen-Sequence:", strlen("Unseen-Sequence:"))) {
1223                                         gchar *seq_tmp = buf+strlen("Unseen-Sequence:");
1224                                         while (*seq_tmp == ' ')
1225                                                 seq_tmp++;
1226                                         seq_name = g_strdup(seq_tmp);
1227                                         seq_name = strretchomp(seq_name);
1228                                         break;
1229                                 }
1230                         }
1231                         fclose(fp);
1232                 }
1233                 if (!seq_name)
1234                         seq_name = g_strdup("unseen");
1235                 tmp = g_strdup_printf("%s:", seq_name);
1236                 g_free(seq_name);
1237                 seq_name = tmp;
1238         }
1239         return seq_name;
1240 }
1241
1242 #if 0
1243 static gint mh_get_flags(Folder *folder, FolderItem *item,
1244                            MsgInfoList *msginfo_list, GRelation *msgflags)
1245 {
1246         gchar *mh_sequences_filename;
1247         FILE *mh_sequences_file;
1248         gchar buf[BUFFSIZE];
1249         gchar *unseen_list = NULL;
1250         gchar *path;
1251         MsgInfoList *mcur = NULL;
1252 /*
1253         GTimer *timer = g_timer_new();
1254         g_timer_start(timer);
1255 */
1256         if (!item)
1257                 return 0;
1258
1259         /* don't update from .mh_sequences if the item's opened: mails may have
1260          * been marked read/unread and it's not yet written in the file. */
1261         if (item->opened)
1262                 return 0;
1263
1264         path = folder_item_get_path(item);
1265
1266         mh_sequences_filename = g_strconcat(path, G_DIR_SEPARATOR_S,
1267                                             ".mh_sequences", NULL);
1268         g_free(path);
1269         if ((mh_sequences_file = g_fopen(mh_sequences_filename, "r+b")) != NULL) {
1270                 while (fgets(buf, sizeof(buf), mh_sequences_file) != NULL) {
1271                         if (!strncmp(buf, get_unseen_seq_name(), strlen(get_unseen_seq_name()))) {
1272                                 unseen_list = g_strdup(buf+strlen(get_unseen_seq_name()));
1273                                 break;
1274                         }
1275                 }
1276                 fclose(mh_sequences_file);
1277         }
1278
1279         g_free(mh_sequences_filename);
1280
1281         if (unseen_list) {
1282                 gchar *cur = NULL;
1283                 gchar *token = NULL, *next = NULL, *boundary = NULL;
1284                 gint num = 0;
1285                 GHashTable *unseen_table = g_hash_table_new(g_direct_hash, g_direct_equal);
1286
1287                 cur = unseen_list = strretchomp(unseen_list);
1288                 debug_print("found unseen list in .mh_sequences: %s\n", unseen_list);
1289 next_token:
1290                 while (*cur && *cur == ' ')
1291                         cur++;
1292
1293                 if ((next = strchr(cur, ' ')) != NULL) {
1294                         token = cur;
1295                         cur = next+1;
1296                         *next = '\0';
1297                 } else {
1298                         token = cur;
1299                         cur = NULL;
1300                 }
1301
1302                 if ((boundary = strchr(token, '-')) != NULL) {
1303                         gchar *start, *end;
1304                         int i;
1305                         start = token;
1306                         end = boundary+1;
1307                         *boundary='\0';
1308                         for (i = atoi(start); i <= atoi(end); i++) {
1309                                 g_hash_table_insert(unseen_table, GINT_TO_POINTER(i), GINT_TO_POINTER(1));
1310                         }
1311                 } else if ((num = atoi(token)) > 0) {
1312                         g_hash_table_insert(unseen_table, GINT_TO_POINTER(num), GINT_TO_POINTER(1));
1313                 }
1314
1315                 if (cur)
1316                         goto next_token;
1317                 for (mcur = msginfo_list; mcur; mcur = mcur->next) {
1318                         MsgInfo *msginfo = (MsgInfo *)mcur->data;
1319                         MsgPermFlags flags = msginfo->flags.perm_flags;
1320                         if (g_hash_table_lookup(unseen_table, GINT_TO_POINTER(msginfo->msgnum))) {
1321                                 flags |= MSG_UNREAD;
1322                         } else if (!(flags & MSG_NEW)) { /* don't mark new msgs as read */
1323                                 flags &= ~(MSG_UNREAD);
1324                         }
1325                         if (flags != msginfo->flags.perm_flags)
1326                                 g_relation_insert(msgflags, msginfo, GINT_TO_POINTER(flags));
1327                 }
1328                 g_hash_table_destroy(unseen_table);
1329                 g_free(unseen_list);
1330         }
1331 /*
1332         g_timer_stop(timer);
1333         g_print("mh_get_flags: %f secs\n", g_timer_elapsed(timer, NULL));
1334         g_timer_destroy(timer);
1335 */
1336         return 0;
1337 }
1338 #endif
1339
1340 static void mh_write_sequences(FolderItem *item, gboolean remove_unseen)
1341 {
1342         gchar *mh_sequences_old, *mh_sequences_new;
1343         FILE *mh_sequences_old_fp, *mh_sequences_new_fp;
1344         gchar buf[BUFFSIZE];
1345         gchar *path = NULL;
1346         gboolean err = FALSE;
1347         START_TIMING("");
1348
1349         if (!item)
1350                 return;
1351
1352         path = folder_item_get_path(item);
1353
1354         mh_sequences_old = g_strconcat(path, G_DIR_SEPARATOR_S,
1355                                             ".mh_sequences", NULL);
1356         mh_sequences_new = g_strconcat(path, G_DIR_SEPARATOR_S,
1357                                             ".mh_sequences.new", NULL);
1358         if ((mh_sequences_new_fp = g_fopen(mh_sequences_new, "w+b")) != NULL) {
1359                 GSList *msglist = folder_item_get_msg_list(item);
1360                 GSList *cur;
1361                 MsgInfo *info = NULL;
1362                 gint start = -1, end = -1;
1363                 gchar *sequence = g_strdup("");
1364                 gint seq_len = 0;
1365                 msglist = g_slist_sort(msglist, sort_cache_list_by_msgnum);
1366                 cur = msglist;
1367
1368                 /* write the unseen sequence if we don't have to scrap it */
1369                 if (!remove_unseen) do {
1370                         info = (MsgInfo *)(cur ? cur->data:NULL);
1371                         if (info && (MSG_IS_UNREAD(info->flags) || MSG_IS_NEW(info->flags))) {
1372                                 if (start < 0)
1373                                         start = end = info->msgnum;
1374                                 else
1375                                         end = info->msgnum;
1376                         } else {
1377                                 if (start > 0 && end > 0) {
1378                                         gchar tmp[32];
1379                                         gint tmp_len = 0;
1380                                         if (start != end)
1381                                                 snprintf(tmp, 31, " %d-%d", start, end);
1382                                         else
1383                                                 snprintf(tmp, 31, " %d", start);
1384
1385                                         tmp_len = strlen(tmp);
1386                                         sequence = g_realloc(sequence, seq_len+tmp_len+1);
1387                                         strcpy(sequence+seq_len, tmp);
1388                                         seq_len += tmp_len;
1389
1390                                         start = end = -1;
1391                                 }
1392                         }
1393                         cur = cur ? cur->next:NULL;
1394                 } while (cur || (start > 0 && end > 0));
1395                 if (sequence && *sequence) {
1396                         if (fprintf(mh_sequences_new_fp, "%s%s\n",
1397                                         get_unseen_seq_name(), sequence) < 0)
1398                                 err = TRUE;
1399                         else
1400                                 debug_print("wrote unseen sequence: '%s%s'\n",
1401                                         get_unseen_seq_name(), sequence);
1402                 }
1403                 /* rewrite the rest of the file */
1404                 if ((mh_sequences_old_fp = g_fopen(mh_sequences_old, "r+b")) != NULL) {
1405                         while (fgets(buf, sizeof(buf), mh_sequences_old_fp) != NULL) {
1406                                 if (strncmp(buf, get_unseen_seq_name(), strlen(get_unseen_seq_name())))
1407                                         if (fprintf(mh_sequences_new_fp, "%s", buf) < 0) {
1408                                                 err = TRUE;
1409                                                 break;
1410                                         }
1411                         }
1412                         fclose(mh_sequences_old_fp);
1413                 }
1414
1415                 fflush(mh_sequences_new_fp);
1416 #if 0
1417                 fsync(fileno(mh_sequences_new_fp));
1418 #endif
1419                 if (fclose(mh_sequences_new_fp) == EOF)
1420                         err = TRUE;
1421
1422                 if (!err)
1423                         g_rename(mh_sequences_new, mh_sequences_old);
1424                 g_free(sequence);
1425                 procmsg_msg_list_free(msglist);
1426         }
1427         g_free(mh_sequences_old);
1428         g_free(mh_sequences_new);
1429         g_free(path);
1430
1431         END_TIMING();
1432 }
1433
1434 static int mh_item_close(Folder *folder, FolderItem *item)
1435 {
1436         time_t last_mtime = (time_t)0;
1437         gboolean need_scan = mh_scan_required(item->folder, item);
1438         last_mtime = item->mtime;
1439
1440         mh_write_sequences(item, FALSE);
1441
1442         if (item->mtime == last_mtime && !need_scan) {
1443                 mh_set_mtime(folder, item);
1444         }
1445
1446         return 0;
1447 }
1448
1449 static void mh_set_mtime(Folder *folder, FolderItem *item)
1450 {
1451         struct stat s;
1452         gchar *path = folder_item_get_path(item);
1453
1454         g_return_if_fail(path != NULL);
1455
1456         if (stat(path, &s) < 0) {
1457                 FILE_OP_ERROR(path, "stat");
1458                 g_free(path);
1459                 return;
1460         }
1461
1462         item->mtime = s.st_mtime;
1463         debug_print("MH: forced mtime of %s to %ld\n", item->name?item->name:"(null)", item->mtime);
1464         g_free(path);
1465 }