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