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 2 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, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  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         gchar *srcfile;
 458         gchar *destfile;
 459         gint filemode = 0;
 460         FolderItemPrefs *prefs;
 461         MsgInfo *msginfo = NULL;
 462         MsgInfoList *cur = NULL;
 463         gint curnum = 0, total = 0;
 464         gchar *srcpath = NULL;
 465         gboolean full_fetch = FALSE;
 466         time_t last_mtime = (time_t)0;
 467
 468         g_return_val_if_fail(dest != NULL, -1);
 469         g_return_val_if_fail(msglist != NULL, -1);
 470
 471         msginfo = (MsgInfo *)msglist->data;
 472
 473         g_return_val_if_fail(msginfo != NULL, -1);
 474
 475         if (msginfo->folder == dest) {
 476                 g_warning("the src folder is identical to the dest.\n");
 477                 return -1;
 478         }
 479
 480         if (msginfo->folder->folder != dest->folder)
 481                 full_fetch = TRUE;
 482
 483         if (dest->last_num < 0) {
 484                 mh_get_last_num(folder, dest);
 485                 if (dest->last_num < 0) return -1;
 486         }
 487
 488         prefs = dest->prefs;
 489
 490         srcpath = folder_item_get_path(msginfo->folder);
 491
 492         dest_need_scan = mh_scan_required(dest->folder, dest);
 493         last_mtime = dest->mtime;
 494
 495         total = g_slist_length(msglist);
 496         if (total > 100) {
 497                 if (MSG_IS_MOVE(msginfo->flags))
 498                         statusbar_print_all(_("Moving messages..."));
 499                 else
 500                         statusbar_print_all(_("Copying messages..."));
 501         }
 502         for (cur = msglist; cur; cur = cur->next) {
 503                 msginfo = (MsgInfo *)cur->data;
 504                 if (!msginfo) {
 505                         goto err_reset_status;
 506                 }
 507                 if (!full_fetch) {
 508                         srcfile = g_strconcat(srcpath,
 509                                 G_DIR_SEPARATOR_S,
 510                                 itos(msginfo->msgnum), NULL);
 511                 } else {
 512                         srcfile = procmsg_get_message_file(msginfo);
 513                 }
 514                 if (!srcfile) {
 515                         goto err_reset_status;
 516                 }
 517                 destfile = mh_get_new_msg_filename(dest);
 518                 if (!destfile) {
 519                         g_free(srcfile);
 520                         goto err_reset_status;
 521                 }
 522
 523                 if (total > 100) {
 524                         statusbar_progress_all(curnum, total, 100);
 525                         if (curnum % 100 == 0)
 526                                 GTK_EVENTS_FLUSH();
 527                         curnum++;
 528                 }
 529
 530                 debug_print("Copying message %s%c%d to %s ...\n",
 531                             msginfo->folder->path, G_DIR_SEPARATOR,
 532                             msginfo->msgnum, dest->path);
 533
 534
 535                 if (MSG_IS_MOVE(msginfo->flags)) {
 536                         msginfo->flags.tmp_flags &= ~MSG_MOVE_DONE;
 537                         if (move_file(srcfile, destfile, TRUE) < 0) {
 538                                 FILE_OP_ERROR(srcfile, "move");
 539                                 if (copy_file(srcfile, destfile, TRUE) < 0) {
 540                                         FILE_OP_ERROR(srcfile, "copy");
 541                                         g_free(srcfile);
 542                                         g_free(destfile);
 543                                         goto err_reset_status;
 544                                 }
 545                         } else {
 546                                 /* say unlinking's not necessary */
 547                                 msginfo->flags.tmp_flags |= MSG_MOVE_DONE;
 548                         }
 549                 } else if (copy_file(srcfile, destfile, TRUE) < 0) {
 550                         FILE_OP_ERROR(srcfile, "copy");
 551                         g_free(srcfile);
 552                         g_free(destfile);
 553                         goto err_reset_status;
 554                 }
 555                 if (prefs && prefs->enable_folder_chmod && prefs->folder_chmod) {
 556                         if (chmod(destfile, prefs->folder_chmod) < 0)
 557                                 FILE_OP_ERROR(destfile, "chmod");
 558
 559                         /* for mark file */
 560                         filemode = prefs->folder_chmod;
 561                         if (filemode & S_IRGRP) filemode |= S_IWGRP;
 562                         if (filemode & S_IROTH) filemode |= S_IWOTH;
 563                 }
 564                 if (relation)
 565                         g_relation_insert(relation, msginfo, GINT_TO_POINTER(dest->last_num+1));
 566                 g_free(srcfile);
 567                 g_free(destfile);
 568                 dest->last_num++;
 569         }
 570
 571         g_free(srcpath);
 572         mh_write_sequences(dest, TRUE);
 573
 574         if (dest->mtime == last_mtime && !dest_need_scan) {
 575                 mh_set_mtime(dest);
 576         }
 577         if (total > 100) {
 578                 statusbar_progress_all(0,0,0);
 579                 statusbar_pop_all();
 580         }
 581         return dest->last_num;
 582 err_reset_status:
 583         g_free(srcpath);
 584         mh_write_sequences(dest, TRUE);
 585         if (total > 100) {
 586                 statusbar_progress_all(0,0,0);
 587                 statusbar_pop_all();
 588         }
 589         return -1;
 590
 591 }
 592
 593 static gint mh_remove_msg(Folder *folder, FolderItem *item, gint num)
 594 {
 595         gboolean need_scan = FALSE;
 596         time_t last_mtime = (time_t)0;
 597         gchar *file;
 598
 599         g_return_val_if_fail(item != NULL, -1);
 600
 601         file = mh_fetch_msg(folder, item, num);
 602         g_return_val_if_fail(file != NULL, -1);
 603
 604         need_scan = mh_scan_required(folder, item);
 605         last_mtime = item->mtime;
 606
 607         if (g_unlink(file) < 0) {
 608                 FILE_OP_ERROR(file, "unlink");
 609                 g_free(file);
 610                 return -1;
 611         }
 612
 613         if (item->mtime == last_mtime && !need_scan) {
 614                 mh_set_mtime(item);
 615         }
 616         g_free(file);
 617         return 0;
 618 }
 619
 620 static gint mh_remove_msgs(Folder *folder, FolderItem *item,
 621                     MsgInfoList *msglist, GRelation *relation)
 622 {
 623         gboolean need_scan = FALSE;
 624         gchar *path, *file;
 625         time_t last_mtime = (time_t)0;
 626         MsgInfoList *cur;
 627         gint total = 0, curnum = 0;
 628
 629         g_return_val_if_fail(item != NULL, -1);
 630
 631         path = folder_item_get_path(item);
 632
 633         need_scan = mh_scan_required(folder, item);
 634         last_mtime = item->mtime;
 635
 636         total = g_slist_length(msglist);
 637         if (total > 100) {
 638                 statusbar_print_all(_("Deleting messages..."));
 639         }
 640
 641         for (cur = msglist; cur; cur = cur->next) {
 642                 MsgInfo *msginfo = (MsgInfo *)cur->data;
 643                 if (msginfo == NULL)
 644                         continue;
 645                 if (MSG_IS_MOVE(msginfo->flags) && MSG_IS_MOVE_DONE(msginfo->flags)) {
 646                         msginfo->flags.tmp_flags &= ~MSG_MOVE_DONE;
 647                         continue;
 648                 }
 649                 if (total > 100) {
 650                         statusbar_progress_all(curnum, total, 100);
 651                         if (curnum % 100 == 0)
 652                                 GTK_EVENTS_FLUSH();
 653                         curnum++;
 654                 }
 655
 656                 file = g_strconcat(path, G_DIR_SEPARATOR_S, itos(msginfo->msgnum), NULL);
 657                 if (file == NULL)
 658                         continue;
 659
 660                 if (g_unlink(file) < 0) {
 661                         g_free(file);
 662                         continue;
 663                 }
 664
 665                 g_free(file);
 666         }
 667
 668         if (total > 100) {
 669                 statusbar_progress_all(0,0,0);
 670                 statusbar_pop_all();
 671         }
 672         if (item->mtime == last_mtime && !need_scan) {
 673                 mh_set_mtime(item);
 674         }
 675
 676         g_free(path);
 677         return 0;
 678 }
 679
 680 static gint mh_remove_all_msg(Folder *folder, FolderItem *item)
 681 {
 682         gchar *path;
 683         gint val;
 684
 685         g_return_val_if_fail(item != NULL, -1);
 686
 687         path = folder_item_get_path(item);
 688         g_return_val_if_fail(path != NULL, -1);
 689         val = remove_all_numbered_files(path);
 690         g_free(path);
 691
 692         mh_write_sequences(item, TRUE);
 693
 694         return val;
 695 }
 696
 697 static gboolean mh_is_msg_changed(Folder *folder, FolderItem *item,
 698                                   MsgInfo *msginfo)
 699 {
 700         struct stat s;
 701
 702         if (g_stat(itos(msginfo->msgnum), &s) < 0 ||
 703             msginfo->size  != s.st_size || (
 704                 (msginfo->mtime - s.st_mtime != 0) &&
 705                 (msginfo->mtime - s.st_mtime != 3600) &&
 706                 (msginfo->mtime - s.st_mtime != -3600)))
 707                 return TRUE;
 708
 709         return FALSE;
 710 }
 711
 712 static gint mh_scan_tree(Folder *folder)
 713 {
 714         FolderItem *item;
 715         gchar *rootpath;
 716
 717         g_return_val_if_fail(folder != NULL, -1);
 718
 719         if (!folder->node) {
 720                 item = folder_item_new(folder, folder->name, NULL);
 721                 item->folder = folder;
 722                 folder->node = item->node = g_node_new(item);
 723         } else
 724                 item = FOLDER_ITEM(folder->node->data);
 725
 726         rootpath = folder_item_get_path(item);
 727         if (change_dir(rootpath) < 0) {
 728                 g_free(rootpath);
 729                 return -1;
 730         }
 731         g_free(rootpath);
 732
 733         mh_create_tree(folder);
 734         mh_remove_missing_folder_items(folder);
 735         mh_scan_tree_recursive(item);
 736
 737         return 0;
 738 }
 739
 740 #define MAKE_DIR_IF_NOT_EXIST(dir) \
 741 { \
 742         if (!is_dir_exist(dir)) { \
 743                 if (is_file_exist(dir)) { \
 744                         g_warning("File `%s' already exists.\n" \
 745                                     "Can't create folder.", dir); \
 746                         return -1; \
 747                 } \
 748                 if (make_dir(dir) < 0) \
 749                         return -1; \
 750         } \
 751 }
 752
 753 static gint mh_create_tree(Folder *folder)
 754 {
 755         gchar *rootpath;
 756
 757         g_return_val_if_fail(folder != NULL, -1);
 758
 759         CHDIR_RETURN_VAL_IF_FAIL(get_mail_base_dir(), -1);
 760         rootpath = LOCAL_FOLDER(folder)->rootpath;
 761         MAKE_DIR_IF_NOT_EXIST(rootpath);
 762         CHDIR_RETURN_VAL_IF_FAIL(rootpath, -1);
 763         MAKE_DIR_IF_NOT_EXIST(INBOX_DIR);
 764         MAKE_DIR_IF_NOT_EXIST(OUTBOX_DIR);
 765         MAKE_DIR_IF_NOT_EXIST(QUEUE_DIR);
 766         MAKE_DIR_IF_NOT_EXIST(DRAFT_DIR);
 767         MAKE_DIR_IF_NOT_EXIST(TRASH_DIR);
 768
 769         return 0;
 770 }
 771
 772 #undef MAKE_DIR_IF_NOT_EXIST
 773
 774 static gchar *mh_item_get_path(Folder *folder, FolderItem *item)
 775 {
 776         gchar *folder_path, *path;
 777         gchar *real_path;
 778         g_return_val_if_fail(folder != NULL, NULL);
 779         g_return_val_if_fail(item != NULL, NULL);
 780
 781         folder_path = g_strdup(LOCAL_FOLDER(folder)->rootpath);
 782         g_return_val_if_fail(folder_path != NULL, NULL);
 783
 784         /* FIXME: [W32] The code below does not correctly merge
 785            relative filenames; there should be a function to handle
 786            this.  */
 787         if ( !is_relative_filename (folder_path) ) {
 788                 if (item->path)
 789                         path = g_strconcat(folder_path, G_DIR_SEPARATOR_S,
 790                                            item->path, NULL);
 791                 else
 792                         path = g_strdup(folder_path);
 793         } else {
 794                 if (item->path)
 795                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 796                                            folder_path, G_DIR_SEPARATOR_S,
 797                                            item->path, NULL);
 798                 else
 799                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 800                                            folder_path, NULL);
 801         }
 802         g_free(folder_path);
 803         real_path = mh_filename_from_utf8(path);
 804         if (!is_dir_exist(real_path) && is_dir_exist(path)) {
 805                 /* mmh, older version did put utf8 filenames instead of
 806                  * the correct encoding */
 807                 rename(path, real_path);
 808                 folder_item_scan(item);
 809         }
 810
 811         g_free(path);
 812         return real_path;
 813 }
 814
 815 static FolderItem *mh_create_folder(Folder *folder, FolderItem *parent,
 816                                     const gchar *name)
 817 {
 818         gchar *path, *real_name;
 819         gchar *fullpath;
 820         FolderItem *new_item;
 821         gchar *mh_sequences_filename;
 822         FILE *mh_sequences_file;
 823
 824         g_return_val_if_fail(folder != NULL, NULL);
 825         g_return_val_if_fail(parent != NULL, NULL);
 826         g_return_val_if_fail(name != NULL, NULL);
 827
 828         path = folder_item_get_path(parent);
 829         if (!is_dir_exist(path))
 830                 if (make_dir_hier(path) != 0)
 831                         return NULL;
 832
 833         real_name = mh_filename_from_utf8(name);
 834         fullpath = g_strconcat(path, G_DIR_SEPARATOR_S, real_name, NULL);
 835         g_free(real_name);
 836         g_free(path);
 837
 838         if (make_dir(fullpath) < 0) {
 839                 g_free(fullpath);
 840                 return NULL;
 841         }
 842
 843         g_free(fullpath);
 844
 845         if (parent->path)
 846                 path = g_strconcat(parent->path, G_DIR_SEPARATOR_S, name,
 847                                    NULL);
 848         else
 849                 path = g_strdup(name);
 850         new_item = folder_item_new(folder, name, path);
 851         folder_item_append(parent, new_item);
 852
 853         g_free(path);
 854
 855         path = folder_item_get_path(new_item);
 856         mh_sequences_filename = g_strconcat(path, G_DIR_SEPARATOR_S,
 857                                             ".mh_sequences", NULL);
 858         if ((mh_sequences_file = g_fopen(mh_sequences_filename, "a+b")) != NULL) {
 859                 fclose(mh_sequences_file);
 860         }
 861         g_free(mh_sequences_filename);
 862         g_free(path);
 863
 864         return new_item;
 865 }
 866
 867 static gint mh_rename_folder(Folder *folder, FolderItem *item,
 868                              const gchar *name)
 869 {
 870         gchar *real_name;
 871         gchar *oldpath;
 872         gchar *dirname;
 873         gchar *newpath, *utf8newpath;
 874         gchar *paths[2];
 875
 876         g_return_val_if_fail(folder != NULL, -1);
 877         g_return_val_if_fail(item != NULL, -1);
 878         g_return_val_if_fail(item->path != NULL, -1);
 879         g_return_val_if_fail(name != NULL, -1);
 880
 881         oldpath = folder_item_get_path(item);
 882         if (!is_dir_exist(oldpath))
 883                 make_dir_hier(oldpath);
 884
 885         dirname = g_path_get_dirname(oldpath);
 886         real_name = mh_filename_from_utf8(name);
 887         newpath = g_strconcat(dirname, G_DIR_SEPARATOR_S, real_name, NULL);
 888         g_free(real_name);
 889
 890         if (g_rename(oldpath, newpath) < 0) {
 891                 FILE_OP_ERROR(oldpath, "rename");
 892                 g_free(oldpath);
 893                 g_free(newpath);
 894                 return -1;
 895         }
 896
 897         g_free(oldpath);
 898         g_free(newpath);
 899
 900         if (strchr(item->path, G_DIR_SEPARATOR) != NULL) {
 901                 dirname = g_path_get_dirname(item->path);
 902                 utf8newpath = g_strconcat(dirname, G_DIR_SEPARATOR_S,
 903                                           name, NULL);
 904                 g_free(dirname);
 905         } else
 906                 utf8newpath = g_strdup(name);
 907
 908         g_free(item->name);
 909         item->name = g_strdup(name);
 910
 911         paths[0] = g_strdup(item->path);
 912         paths[1] = utf8newpath;
 913         g_node_traverse(item->node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 914                         mh_rename_folder_func, paths);
 915
 916         g_free(paths[0]);
 917         g_free(paths[1]);
 918         return 0;
 919 }
 920
 921 static gint mh_remove_folder(Folder *folder, FolderItem *item)
 922 {
 923         gchar *path;
 924
 925         g_return_val_if_fail(folder != NULL, -1);
 926         g_return_val_if_fail(item != NULL, -1);
 927         g_return_val_if_fail(item->path != NULL, -1);
 928
 929         path = folder_item_get_path(item);
 930         if (remove_dir_recursive(path) < 0) {
 931                 g_warning("can't remove directory `%s'\n", path);
 932                 g_free(path);
 933                 return -1;
 934         }
 935
 936         g_free(path);
 937         folder_item_remove(item);
 938         return 0;
 939 }
 940
 941 static MsgInfo *mh_parse_msg(const gchar *file, FolderItem *item)
 942 {
 943         MsgInfo *msginfo;
 944         MsgFlags flags;
 945
 946         g_return_val_if_fail(item != NULL, NULL);
 947         g_return_val_if_fail(file != NULL, NULL);
 948
 949         flags.perm_flags = MSG_NEW|MSG_UNREAD;
 950         flags.tmp_flags = 0;
 951
 952         if (folder_has_parent_of_type(item, F_QUEUE)) {
 953                 MSG_SET_TMP_FLAGS(flags, MSG_QUEUED);
 954         } else if (folder_has_parent_of_type(item, F_DRAFT)) {
 955                 MSG_SET_TMP_FLAGS(flags, MSG_DRAFT);
 956         }
 957
 958         msginfo = procheader_parse_file(file, flags, FALSE, FALSE);
 959         if (!msginfo) return NULL;
 960
 961         msginfo->msgnum = atoi(file);
 962         msginfo->folder = item;
 963
 964         return msginfo;
 965 }
 966
 967 static gboolean mh_remove_missing_folder_items_func(GNode *node, gpointer data)
 968 {
 969         FolderItem *item;
 970         gchar *path;
 971
 972         g_return_val_if_fail(node->data != NULL, FALSE);
 973
 974         if (G_NODE_IS_ROOT(node))
 975                 return FALSE;
 976
 977         item = FOLDER_ITEM(node->data);
 978
 979         path = folder_item_get_path(item);
 980         if (!is_dir_exist(path)) {
 981                 debug_print("folder '%s' not found. removing...\n", path);
 982                 folder_item_remove(item);
 983         }
 984         g_free(path);
 985
 986         return FALSE;
 987 }
 988
 989 static void mh_remove_missing_folder_items(Folder *folder)
 990 {
 991         g_return_if_fail(folder != NULL);
 992
 993         debug_print("searching missing folders...\n");
 994
 995         g_node_traverse(folder->node, G_POST_ORDER, G_TRAVERSE_ALL, -1,
 996                         mh_remove_missing_folder_items_func, folder);
 997 }
 998
 999 static void mh_scan_tree_recursive(FolderItem *item)
1000 {
1001         Folder *folder;
1002 #ifdef G_OS_WIN32
1003         GDir *dir;
1004 #else
1005         DIR *dp;
1006         struct dirent *d;
1007 #endif
1008         const gchar *dir_name;
1009         struct stat s;
1010         gchar *real_path, *entry, *utf8entry, *utf8name;
1011         gint n_msg = 0;
1012
1013         g_return_if_fail(item != NULL);
1014         g_return_if_fail(item->folder != NULL);
1015
1016         folder = item->folder;
1017
1018         real_path = item->path ? mh_filename_from_utf8(item->path) : g_strdup(".");
1019 #ifdef G_OS_WIN32
1020         dir = g_dir_open(real_path, 0, NULL);
1021         if (!dir) {
1022                 g_warning("failed to open directory: %s\n", real_path);
1023                 g_free(real_path);
1024                 return;
1025         }
1026 #else
1027         dp = opendir(real_path);
1028         if (!dp) {
1029                 FILE_OP_ERROR(real_path, "opendir");
1030                 return;
1031         }
1032 #endif
1033         g_free(real_path);
1034
1035         debug_print("scanning %s ...\n",
1036                     item->path ? item->path
1037                     : LOCAL_FOLDER(item->folder)->rootpath);
1038         if (folder->ui_func)
1039                 folder->ui_func(folder, item, folder->ui_func_data);
1040
1041 #ifdef G_OS_WIN32
1042         while ((dir_name = g_dir_read_name(dir)) != NULL) {
1043 #else
1044         while ((d = readdir(dp)) != NULL) {
1045                 dir_name = d->d_name;
1046 #endif
1047                 if (dir_name[0] == '.') continue;
1048
1049                 utf8name = mh_filename_to_utf8(dir_name);
1050                 if (item->path)
1051                         utf8entry = g_strconcat(item->path, G_DIR_SEPARATOR_S,
1052                                                 utf8name, NULL);
1053                 else
1054                         utf8entry = g_strdup(utf8name);
1055                 entry = mh_filename_from_utf8(utf8entry);
1056
1057                 if (
1058 #if !defined(G_OS_WIN32) && defined(HAVE_DIRENT_D_TYPE)
1059                         d->d_type == DT_DIR ||
1060                         (d->d_type == DT_UNKNOWN &&
1061 #endif
1062                         g_stat(entry, &s) == 0 && S_ISDIR(s.st_mode)
1063 #if !defined(G_OS_WIN32) && defined(HAVE_DIRENT_D_TYPE)
1064                         )
1065 #endif
1066                    ) {
1067                         FolderItem *new_item = NULL;
1068                         GNode *node;
1069
1070                         node = item->node;
1071                         for (node = node->children; node != NULL; node = node->next) {
1072                                 FolderItem *cur_item = FOLDER_ITEM(node->data);
1073                                 gchar *curpath = mh_filename_from_utf8(cur_item->path);
1074                                 if (!strcmp2(curpath, entry)) {
1075                                         new_item = cur_item;
1076                                         g_free(curpath);
1077                                         break;
1078                                 }
1079                                 g_free(curpath);
1080                         }
1081                         if (!new_item) {
1082                                 debug_print("new folder '%s' found.\n", entry);
1083                                 new_item = folder_item_new(folder, utf8name, utf8entry);
1084                                 folder_item_append(item, new_item);
1085                         }
1086
1087                         if (!item->path) {
1088                                 if (!folder->inbox &&
1089                                     !strcmp(dir_name, INBOX_DIR)) {
1090                                         new_item->stype = F_INBOX;
1091                                         folder->inbox = new_item;
1092                                 } else if (!folder->outbox &&
1093                                            !strcmp(dir_name, OUTBOX_DIR)) {
1094                                         new_item->stype = F_OUTBOX;
1095                                         folder->outbox = new_item;
1096                                 } else if (!folder->draft &&
1097                                            !strcmp(dir_name, DRAFT_DIR)) {
1098                                         new_item->stype = F_DRAFT;
1099                                         folder->draft = new_item;
1100                                 } else if (!folder->queue &&
1101                                            !strcmp(dir_name, QUEUE_DIR)) {
1102                                         new_item->stype = F_QUEUE;
1103                                         folder->queue = new_item;
1104                                 } else if (!folder->trash &&
1105                                            !strcmp(dir_name, TRASH_DIR)) {
1106                                         new_item->stype = F_TRASH;
1107                                         folder->trash = new_item;
1108                                 }
1109                         }
1110
1111                         mh_scan_tree_recursive(new_item);
1112                 } else if (to_number(dir_name) > 0) n_msg++;
1113
1114                 g_free(entry);
1115                 g_free(utf8entry);
1116                 g_free(utf8name);
1117         }
1118
1119 #ifdef G_OS_WIN32
1120         g_dir_close(dir);
1121 #else
1122         closedir(dp);
1123 #endif
1124
1125         mh_set_mtime(item);
1126 }
1127
1128 static gboolean mh_rename_folder_func(GNode *node, gpointer data)
1129 {
1130         FolderItem *item = node->data;
1131         gchar **paths = data;
1132         const gchar *oldpath = paths[0];
1133         const gchar *newpath = paths[1];
1134         gchar *base;
1135         gchar *new_itempath;
1136         gint oldpathlen;
1137
1138         oldpathlen = strlen(oldpath);
1139         if (strncmp(oldpath, item->path, oldpathlen) != 0) {
1140                 g_warning("path doesn't match: %s, %s\n", oldpath, item->path);
1141                 return TRUE;
1142         }
1143
1144         base = item->path + oldpathlen;
1145         while (*base == G_DIR_SEPARATOR) base++;
1146         if (*base == '\0')
1147                 new_itempath = g_strdup(newpath);
1148         else
1149                 new_itempath = g_strconcat(newpath, G_DIR_SEPARATOR_S, base,
1150                                            NULL);
1151         g_free(item->path);
1152         item->path = new_itempath;
1153
1154         return FALSE;
1155 }
1156
1157 static gchar *mh_filename_from_utf8(const gchar *path)
1158 {
1159         gchar *real_path = g_filename_from_utf8(path, -1, NULL, NULL, NULL);
1160
1161         if (!real_path) {
1162                 g_warning("mh_filename_from_utf8: faild to convert character set\n");
1163                 real_path = g_strdup(path);
1164         }
1165
1166         return real_path;
1167 }
1168
1169 static gchar *mh_filename_to_utf8(const gchar *path)
1170 {
1171         gchar *utf8path = g_filename_to_utf8(path, -1, NULL, NULL, NULL);
1172         if (!utf8path) {
1173                 g_warning("mh_filename_to_utf8: faild to convert character set\n");
1174                 utf8path = g_strdup(path);
1175         }
1176
1177         return utf8path;
1178 }
1179
1180 static gint sort_cache_list_by_msgnum(gconstpointer a, gconstpointer b)
1181 {
1182         MsgInfo *msginfo_a = (MsgInfo *) a;
1183         MsgInfo *msginfo_b = (MsgInfo *) b;
1184
1185         return (msginfo_a->msgnum - msginfo_b->msgnum);
1186 }
1187
1188 static gchar *get_unseen_seq_name(void)
1189 {
1190         static gchar *seq_name = NULL;
1191         if (!seq_name) {
1192                 gchar buf[BUFFSIZE];
1193                 gchar *tmp;
1194                 gchar *profile_path = g_strconcat(
1195                         get_home_dir(), G_DIR_SEPARATOR_S,
1196                         ".mh_profile", NULL);
1197                 FILE *fp = g_fopen(profile_path, "r");
1198                 if (fp) {
1199                         while (fgets(buf, sizeof(buf), fp) != NULL) {
1200                                 if (!strncmp(buf, "Unseen-Sequence:", strlen("Unseen-Sequence:"))) {
1201                                         gchar *seq_tmp = buf+strlen("Unseen-Sequence:");
1202                                         while (*seq_tmp == ' ')
1203                                                 seq_tmp++;
1204                                         seq_name = g_strdup(seq_tmp);
1205                                         seq_name = strretchomp(seq_name);
1206                                         break;
1207                                 }
1208                         }
1209                         fclose(fp);
1210                 }
1211                 if (!seq_name)
1212                         seq_name = g_strdup("unseen");
1213                 tmp = g_strdup_printf("%s:", seq_name);
1214                 g_free(seq_name);
1215                 seq_name = tmp;
1216         }
1217         return seq_name;
1218 }
1219
1220 #if 0
1221 static gint mh_get_flags(Folder *folder, FolderItem *item,
1222                            MsgInfoList *msginfo_list, GRelation *msgflags)
1223 {
1224         gchar *mh_sequences_filename;
1225         FILE *mh_sequences_file;
1226         gchar buf[BUFFSIZE];
1227         gchar *unseen_list = NULL;
1228         gchar *path;
1229         MsgInfoList *mcur = NULL;
1230 /*
1231         GTimer *timer = g_timer_new();
1232         g_timer_start(timer);
1233 */
1234         if (!item)
1235                 return 0;
1236
1237         /* don't update from .mh_sequences if the item's opened: mails may have
1238          * been marked read/unread and it's not yet written in the file. */
1239         if (item->opened)
1240                 return 0;
1241
1242         path = folder_item_get_path(item);
1243
1244         mh_sequences_filename = g_strconcat(path, G_DIR_SEPARATOR_S,
1245                                             ".mh_sequences", NULL);
1246         g_free(path);
1247         if ((mh_sequences_file = g_fopen(mh_sequences_filename, "r+b")) != NULL) {
1248                 while (fgets(buf, sizeof(buf), mh_sequences_file) != NULL) {
1249                         if (!strncmp(buf, get_unseen_seq_name(), strlen(get_unseen_seq_name()))) {
1250                                 unseen_list = g_strdup(buf+strlen(get_unseen_seq_name()));
1251                                 break;
1252                         }
1253                 }
1254                 fclose(mh_sequences_file);
1255         }
1256
1257         g_free(mh_sequences_filename);
1258
1259         if (unseen_list) {
1260                 gchar *cur = NULL;
1261                 gchar *token = NULL, *next = NULL, *boundary = NULL;
1262                 gint num = 0;
1263                 GHashTable *unseen_table = g_hash_table_new(g_direct_hash, g_direct_equal);
1264
1265                 cur = unseen_list = strretchomp(unseen_list);
1266                 debug_print("found unseen list in .mh_sequences: %s\n", unseen_list);
1267 next_token:
1268                 while (*cur && *cur == ' ')
1269                         cur++;
1270
1271                 if ((next = strchr(cur, ' ')) != NULL) {
1272                         token = cur;
1273                         cur = next+1;
1274                         *next = '\0';
1275                 } else {
1276                         token = cur;
1277                         cur = NULL;
1278                 }
1279
1280                 if ((boundary = strchr(token, '-')) != NULL) {
1281                         gchar *start, *end;
1282                         int i;
1283                         start = token;
1284                         end = boundary+1;
1285                         *boundary='\0';
1286                         for (i = atoi(start); i <= atoi(end); i++) {
1287                                 g_hash_table_insert(unseen_table, GINT_TO_POINTER(i), GINT_TO_POINTER(1));
1288                         }
1289                 } else if ((num = atoi(token)) > 0) {
1290                         g_hash_table_insert(unseen_table, GINT_TO_POINTER(num), GINT_TO_POINTER(1));
1291                 }
1292
1293                 if (cur)
1294                         goto next_token;
1295                 for (mcur = msginfo_list; mcur; mcur = mcur->next) {
1296                         MsgInfo *msginfo = (MsgInfo *)mcur->data;
1297                         MsgPermFlags flags = msginfo->flags.perm_flags;
1298                         if (g_hash_table_lookup(unseen_table, GINT_TO_POINTER(msginfo->msgnum))) {
1299                                 flags |= MSG_UNREAD;
1300                         } else if (!(flags & MSG_NEW)) { /* don't mark new msgs as read */
1301                                 flags &= ~(MSG_UNREAD);
1302                         }
1303                         if (flags != msginfo->flags.perm_flags)
1304                                 g_relation_insert(msgflags, msginfo, GINT_TO_POINTER(flags));
1305                 }
1306                 g_hash_table_destroy(unseen_table);
1307                 g_free(unseen_list);
1308         }
1309 /*
1310         g_timer_stop(timer);
1311         printf("mh_get_flags: %f secs\n", g_timer_elapsed(timer, NULL));
1312         g_timer_destroy(timer);
1313 */
1314         return 0;
1315 }
1316 #endif
1317
1318 static void mh_write_sequences(FolderItem *item, gboolean remove_unseen)
1319 {
1320         gchar *mh_sequences_old, *mh_sequences_new;
1321         FILE *mh_sequences_old_fp, *mh_sequences_new_fp;
1322         gchar buf[BUFFSIZE];
1323         gchar *path = NULL;
1324         START_TIMING("");
1325
1326         if (!item)
1327                 return;
1328
1329         path = folder_item_get_path(item);
1330
1331         mh_sequences_old = g_strconcat(path, G_DIR_SEPARATOR_S,
1332                                             ".mh_sequences", NULL);
1333         mh_sequences_new = g_strconcat(path, G_DIR_SEPARATOR_S,
1334                                             ".mh_sequences.new", NULL);
1335         if ((mh_sequences_new_fp = g_fopen(mh_sequences_new, "w+b")) != NULL) {
1336                 GSList *msglist = folder_item_get_msg_list(item);
1337                 GSList *cur;
1338                 MsgInfo *info = NULL;
1339                 gint start = -1, end = -1;
1340                 gchar *sequence = g_strdup("");
1341                 gint seq_len = 0;
1342                 msglist = g_slist_sort(msglist, sort_cache_list_by_msgnum);
1343                 cur = msglist;
1344
1345                 /* write the unseen sequence if we don't have to scrap it */
1346                 if (!remove_unseen) do {
1347                         info = (MsgInfo *)(cur ? cur->data:NULL);
1348                         if (info && (MSG_IS_UNREAD(info->flags) || MSG_IS_NEW(info->flags))) {
1349                                 if (start < 0)
1350                                         start = end = info->msgnum;
1351                                 else
1352                                         end = info->msgnum;
1353                         } else {
1354                                 if (start > 0 && end > 0) {
1355                                         gchar tmp[32];
1356                                         gint tmp_len = 0;
1357                                         if (start != end)
1358                                                 snprintf(tmp, 31, " %d-%d", start, end);
1359                                         else
1360                                                 snprintf(tmp, 31, " %d", start);
1361
1362                                         tmp_len = strlen(tmp);
1363                                         sequence = g_realloc(sequence, seq_len+tmp_len+1);
1364                                         strcpy(sequence+seq_len, tmp);
1365                                         seq_len += tmp_len;
1366
1367                                         start = end = -1;
1368                                 }
1369                         }
1370                         cur = cur ? cur->next:NULL;
1371                 } while (cur || (start > 0 && end > 0));
1372                 if (sequence && *sequence) {
1373                         fprintf(mh_sequences_new_fp, "%s%s\n",
1374                                         get_unseen_seq_name(), sequence);
1375                         debug_print("wrote unseen sequence: '%s%s'\n",
1376                                         get_unseen_seq_name(), sequence);
1377                 }
1378                 /* rewrite the rest of the file */
1379                 if ((mh_sequences_old_fp = g_fopen(mh_sequences_old, "r+b")) != NULL) {
1380                         while (fgets(buf, sizeof(buf), mh_sequences_old_fp) != NULL) {
1381                                 if (strncmp(buf, get_unseen_seq_name(), strlen(get_unseen_seq_name())))
1382                                         fprintf(mh_sequences_new_fp, "%s", buf);
1383                         }
1384                         fclose(mh_sequences_old_fp);
1385                 }
1386
1387                 fflush(mh_sequences_new_fp);
1388 #if 0
1389                 fsync(fileno(mh_sequences_new_fp));
1390 #endif
1391                 fclose(mh_sequences_new_fp);
1392
1393                 g_rename(mh_sequences_new, mh_sequences_old);
1394                 g_free(sequence);
1395                 procmsg_msg_list_free(msglist);
1396         }
1397         g_free(mh_sequences_old);
1398         g_free(mh_sequences_new);
1399         g_free(path);
1400
1401         END_TIMING();
1402 }
1403
1404 static int mh_item_close(Folder *folder, FolderItem *item)
1405 {
1406         time_t last_mtime = (time_t)0;
1407         gboolean need_scan = mh_scan_required(item->folder, item);
1408         last_mtime = item->mtime;
1409
1410         mh_write_sequences(item, FALSE);
1411
1412         if (item->mtime == last_mtime && !need_scan) {
1413                 mh_set_mtime(item);
1414         }
1415
1416         return 0;
1417 }
1418
1419 void mh_set_mtime(FolderItem *item)
1420 {
1421         struct stat s;
1422         gchar *path = folder_item_get_path(item);
1423
1424         g_return_if_fail(path != NULL);
1425
1426         if (stat(path, &s) < 0) {
1427                 FILE_OP_ERROR(path, "stat");
1428                 g_free(path);
1429                 return;
1430         }
1431
1432         item->mtime = s.st_mtime;
1433         debug_print("MH: forced mtime of %s to %ld\n", item->name, item->mtime);
1434         g_free(path);
1435 }