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