src/mh.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2006 Hiroyuki Yamamoto and the Sylpheed-Claws 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
  34 #undef MEASURE_TIME
  35
  36 #ifdef MEASURE_TIME
  37 #  include <sys/time.h>
  38 #endif
  39
  40 #include "folder.h"
  41 #include "mh.h"
  42 #include "procmsg.h"
  43 #include "procheader.h"
  44 #include "utils.h"
  45 #include "codeconv.h"
  46
  47 /* Define possible missing constants for Windows. */
  48 #ifdef G_OS_WIN32
  49 # ifndef S_IRGRP
  50 # define S_IRGRP 0
  51 # define S_IWGRP 0
  52 # endif
  53 # ifndef S_IROTH
  54 # define S_IROTH 0
  55 # define S_IWOTH 0
  56 # endif
  57 #endif
  58
  59
  60 static void     mh_folder_init          (Folder         *folder,
  61                                          const gchar    *name,
  62                                          const gchar    *path);
  63
  64 static Folder   *mh_folder_new          (const gchar    *name,
  65                                          const gchar    *path);
  66 static void     mh_folder_destroy       (Folder         *folder);
  67 static gchar   *mh_fetch_msg            (Folder         *folder,
  68                                          FolderItem     *item,
  69                                          gint            num);
  70 static MsgInfo *mh_get_msginfo          (Folder         *folder,
  71                                          FolderItem     *item,
  72                                          gint            num);
  73 static gint     mh_add_msg              (Folder         *folder,
  74                                          FolderItem     *dest,
  75                                          const gchar    *file,
  76                                          MsgFlags       *flags);
  77 static gint     mh_add_msgs             (Folder         *folder,
  78                                          FolderItem     *dest,
  79                                          GSList         *file_list,
  80                                          GRelation      *relation);
  81 static gint     mh_copy_msg             (Folder         *folder,
  82                                          FolderItem     *dest,
  83                                          MsgInfo        *msginfo);
  84 static gint     mh_copy_msgs            (Folder         *folder,
  85                                          FolderItem     *dest,
  86                                          MsgInfoList    *msglist,
  87                                          GRelation      *relation);
  88 static gint     mh_remove_msg           (Folder         *folder,
  89                                          FolderItem     *item,
  90                                          gint            num);
  91 static gint     mh_remove_all_msg       (Folder         *folder,
  92                                          FolderItem     *item);
  93 static gboolean mh_is_msg_changed       (Folder         *folder,
  94                                          FolderItem     *item,
  95                                          MsgInfo        *msginfo);
  96
  97 static gint     mh_get_num_list         (Folder         *folder,
  98                                          FolderItem     *item,
  99                                          GSList         **list,
 100                                          gboolean       *old_uids_valid);
 101 static gint     mh_scan_tree            (Folder         *folder);
 102
 103 static gint    mh_create_tree           (Folder         *folder);
 104 static FolderItem *mh_create_folder     (Folder         *folder,
 105                                          FolderItem     *parent,
 106                                          const gchar    *name);
 107 static gint    mh_rename_folder         (Folder         *folder,
 108                                          FolderItem     *item,
 109                                          const gchar    *name);
 110 static gint    mh_remove_folder         (Folder         *folder,
 111                                          FolderItem     *item);
 112
 113 static gchar   *mh_get_new_msg_filename         (FolderItem     *dest);
 114
 115 static MsgInfo *mh_parse_msg                    (const gchar    *file,
 116                                                  FolderItem     *item);
 117 static void     mh_remove_missing_folder_items  (Folder         *folder);
 118 static gchar    *mh_filename_from_utf8          (const gchar    *path);
 119 static gchar    *mh_filename_to_utf8            (const gchar    *path);
 120 static void     mh_scan_tree_recursive          (FolderItem     *item);
 121
 122 static gboolean mh_rename_folder_func           (GNode          *node,
 123                                                  gpointer        data);
 124 static gchar   *mh_item_get_path                (Folder *folder,
 125                                                  FolderItem *item);
 126
 127 static gboolean mh_scan_required        (Folder         *folder,
 128                                          FolderItem     *item);
 129 static int mh_item_close                (Folder         *folder,
 130                                          FolderItem     *item);
 131 static gint mh_get_flags                (Folder *folder, FolderItem *item,
 132                                          MsgInfoList *msginfo_list, GRelation *msgflags);
 133 static void mh_write_sequences          (FolderItem     *item);
 134
 135 static FolderClass mh_class;
 136
 137 FolderClass *mh_get_class(void)
 138 {
 139         if (mh_class.idstr == NULL) {
 140                 mh_class.type = F_MH;
 141                 mh_class.idstr = "mh";
 142                 mh_class.uistr = "MH";
 143
 144                 /* Folder functions */
 145                 mh_class.new_folder = mh_folder_new;
 146                 mh_class.destroy_folder = mh_folder_destroy;
 147                 mh_class.set_xml = folder_local_set_xml;
 148                 mh_class.get_xml = folder_local_get_xml;
 149                 mh_class.scan_tree = mh_scan_tree;
 150                 mh_class.create_tree = mh_create_tree;
 151
 152                 /* FolderItem functions */
 153                 mh_class.item_get_path = mh_item_get_path;
 154                 mh_class.create_folder = mh_create_folder;
 155                 mh_class.rename_folder = mh_rename_folder;
 156                 mh_class.remove_folder = mh_remove_folder;
 157                 mh_class.get_num_list = mh_get_num_list;
 158                 mh_class.scan_required = mh_scan_required;
 159                 mh_class.close = mh_item_close;
 160                 mh_class.get_flags = mh_get_flags;
 161
 162                 /* Message functions */
 163                 mh_class.get_msginfo = mh_get_msginfo;
 164                 mh_class.fetch_msg = mh_fetch_msg;
 165                 mh_class.add_msg = mh_add_msg;
 166                 mh_class.add_msgs = mh_add_msgs;
 167                 mh_class.copy_msg = mh_copy_msg;
 168                 mh_class.copy_msgs = mh_copy_msgs;
 169                 mh_class.remove_msg = mh_remove_msg;
 170                 mh_class.remove_all_msg = mh_remove_all_msg;
 171                 mh_class.is_msg_changed = mh_is_msg_changed;
 172         }
 173
 174         return &mh_class;
 175 }
 176
 177 static Folder *mh_folder_new(const gchar *name, const gchar *path)
 178 {
 179         Folder *folder;
 180
 181         folder = (Folder *)g_new0(MHFolder, 1);
 182         folder->klass = &mh_class;
 183         mh_folder_init(folder, name, path);
 184
 185         return folder;
 186 }
 187
 188 static void mh_folder_destroy(Folder *folder)
 189 {
 190         folder_local_folder_destroy(LOCAL_FOLDER(folder));
 191 }
 192
 193 static void mh_folder_init(Folder *folder, const gchar *name, const gchar *path)
 194 {
 195         folder_local_folder_init(folder, name, path);
 196
 197 }
 198
 199 gboolean mh_scan_required(Folder *folder, FolderItem *item)
 200 {
 201         gchar *path;
 202         struct stat s;
 203
 204         path = folder_item_get_path(item);
 205         g_return_val_if_fail(path != NULL, FALSE);
 206
 207         if (stat(path, &s) < 0) {
 208                 FILE_OP_ERROR(path, "stat");
 209                 g_free(path);
 210                 return FALSE;
 211         }
 212
 213         if ((s.st_mtime > item->mtime) &&
 214                 (s.st_mtime - 3600 != item->mtime)) {
 215                 debug_print("MH scan required, folder updated: %s (%ld > %ld)\n",
 216                             path,
 217                             (long int) s.st_mtime,
 218                             (long int) item->mtime);
 219                 g_free(path);
 220                 return TRUE;
 221         }
 222
 223         debug_print("MH scan not required: %s (%ld <= %ld)\n",
 224                     path,
 225                     (long int) s.st_mtime,
 226                     (long int) item->mtime);
 227         g_free(path);
 228         return FALSE;
 229 }
 230
 231 void mh_get_last_num(Folder *folder, FolderItem *item)
 232 {
 233         gchar *path;
 234         DIR *dp;
 235         struct dirent *d;
 236         gint max = 0;
 237         gint num;
 238
 239         g_return_if_fail(item != NULL);
 240
 241         debug_print("mh_get_last_num(): Scanning %s ...\n", item->path);
 242
 243         path = folder_item_get_path(item);
 244         g_return_if_fail(path != NULL);
 245         if (change_dir(path) < 0) {
 246                 g_free(path);
 247                 return;
 248         }
 249         g_free(path);
 250
 251         if ((dp = opendir(".")) == NULL) {
 252                 FILE_OP_ERROR(item->path, "opendir");
 253                 return;
 254         }
 255
 256         while ((d = readdir(dp)) != NULL) {
 257                 if ((num = to_number(d->d_name)) > 0 &&
 258                     dirent_is_regular_file(d)) {
 259                         if (max < num)
 260                                 max = num;
 261                 }
 262         }
 263         closedir(dp);
 264
 265         debug_print("Last number in dir %s = %d\n", item->path, max);
 266         item->last_num = max;
 267 }
 268
 269 gint mh_get_num_list(Folder *folder, FolderItem *item, GSList **list, gboolean *old_uids_valid)
 270 {
 271
 272         gchar *path;
 273         DIR *dp;
 274         struct dirent *d;
 275         gint num, nummsgs = 0;
 276
 277         g_return_val_if_fail(item != NULL, -1);
 278
 279         debug_print("mh_get_num_list(): Scanning %s ...\n", item->path);
 280
 281         *old_uids_valid = TRUE;
 282
 283         path = folder_item_get_path(item);
 284         g_return_val_if_fail(path != NULL, -1);
 285         if (change_dir(path) < 0) {
 286                 g_free(path);
 287                 return -1;
 288         }
 289         g_free(path);
 290
 291         if ((dp = opendir(".")) == NULL) {
 292                 FILE_OP_ERROR(item->path, "opendir");
 293                 return -1;
 294         }
 295
 296         while ((d = readdir(dp)) != NULL) {
 297                 if ((num = to_number(d->d_name)) > 0) {
 298                         *list = g_slist_prepend(*list, GINT_TO_POINTER(num));
 299                         nummsgs++;
 300                 }
 301         }
 302         closedir(dp);
 303
 304         item->mtime = time(NULL);
 305         return nummsgs;
 306 }
 307
 308 static gchar *mh_fetch_msg(Folder *folder, FolderItem *item, gint num)
 309 {
 310         gchar *path;
 311         gchar *file;
 312
 313         g_return_val_if_fail(item != NULL, NULL);
 314         g_return_val_if_fail(num > 0, NULL);
 315
 316         path = folder_item_get_path(item);
 317         file = g_strconcat(path, G_DIR_SEPARATOR_S, itos(num), NULL);
 318
 319         if (!is_file_exist(file)) {
 320                 g_free(file);
 321                 g_free(path);
 322                 return NULL;
 323         }
 324         g_free(path);
 325         return file;
 326 }
 327
 328 static MsgInfo *mh_get_msginfo(Folder *folder, FolderItem *item, gint num)
 329 {
 330         MsgInfo *msginfo;
 331         gchar *file;
 332
 333         g_return_val_if_fail(item != NULL, NULL);
 334         if (num <= 0)
 335                 return NULL;
 336
 337         file = mh_fetch_msg(folder, item, num);
 338         if (!file) return NULL;
 339
 340         msginfo = mh_parse_msg(file, item);
 341         if (msginfo)
 342                 msginfo->msgnum = num;
 343
 344         g_free(file);
 345
 346         return msginfo;
 347 }
 348
 349 static gchar *mh_get_new_msg_filename(FolderItem *dest)
 350 {
 351         gchar *destfile;
 352         gchar *destpath;
 353
 354         destpath = folder_item_get_path(dest);
 355         g_return_val_if_fail(destpath != NULL, NULL);
 356
 357         if (!is_dir_exist(destpath))
 358                 make_dir_hier(destpath);
 359
 360         for (;;) {
 361                 destfile = g_strdup_printf("%s%c%d", destpath, G_DIR_SEPARATOR,
 362                                            dest->last_num + 1);
 363                 if (is_file_entry_exist(destfile)) {
 364                         dest->last_num++;
 365                         g_free(destfile);
 366                 } else
 367                         break;
 368         }
 369
 370         g_free(destpath);
 371
 372         return destfile;
 373 }
 374
 375 static gint mh_add_msg(Folder *folder, FolderItem *dest, const gchar *file, MsgFlags *flags)
 376 {
 377         gint ret;
 378         GSList file_list;
 379         MsgFileInfo fileinfo;
 380
 381         g_return_val_if_fail(file != NULL, -1);
 382
 383         fileinfo.msginfo = NULL;
 384         fileinfo.file = (gchar *)file;
 385         fileinfo.flags = flags;
 386         file_list.data = &fileinfo;
 387         file_list.next = NULL;
 388
 389         ret = mh_add_msgs(folder, dest, &file_list, NULL);
 390         return ret;
 391 }
 392
 393 static gint mh_add_msgs(Folder *folder, FolderItem *dest, GSList *file_list,
 394                  GRelation *relation)
 395 {
 396         gchar *destfile;
 397         GSList *cur;
 398         MsgFileInfo *fileinfo;
 399
 400         g_return_val_if_fail(dest != NULL, -1);
 401         g_return_val_if_fail(file_list != NULL, -1);
 402
 403         if (dest->last_num < 0) {
 404                 mh_get_last_num(folder, dest);
 405                 if (dest->last_num < 0) return -1;
 406         }
 407
 408         for (cur = file_list; cur != NULL; cur = cur->next) {
 409                 fileinfo = (MsgFileInfo *)cur->data;
 410
 411                 destfile = mh_get_new_msg_filename(dest);
 412                 if (destfile == NULL) return -1;
 413
 414 #ifdef G_OS_UNIX
 415                 if (link(fileinfo->file, destfile) < 0) {
 416 #endif
 417                         if (copy_file(fileinfo->file, destfile, TRUE) < 0) {
 418                                 g_warning(_("can't copy message %s to %s\n"),
 419                                           fileinfo->file, destfile);
 420                                 g_free(destfile);
 421                                 return -1;
 422                         }
 423 #ifdef G_OS_UNIX
 424                 }
 425 #endif
 426
 427                 if (relation != NULL)
 428                         g_relation_insert(relation, fileinfo, GINT_TO_POINTER(dest->last_num + 1));
 429                 g_free(destfile);
 430                 dest->last_num++;
 431         }
 432         mh_write_sequences(dest);
 433         return dest->last_num;
 434 }
 435
 436 static gint mh_copy_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
 437 {
 438         GSList msglist;
 439
 440         g_return_val_if_fail(msginfo != NULL, -1);
 441
 442         msglist.data = msginfo;
 443         msglist.next = NULL;
 444
 445         return mh_copy_msgs(folder, dest, &msglist, NULL);
 446 }
 447
 448 static gint mh_copy_msgs(Folder *folder, FolderItem *dest, MsgInfoList *msglist,
 449                          GRelation *relation)
 450 {
 451         gboolean dest_need_scan = FALSE;
 452         gchar *srcfile;
 453         gchar *destfile;
 454         gint filemode = 0;
 455         FolderItemPrefs *prefs;
 456         MsgInfo *msginfo = NULL;
 457         gboolean remove_special_headers = FALSE;
 458         MsgInfoList *cur = NULL;
 459         g_return_val_if_fail(dest != NULL, -1);
 460         g_return_val_if_fail(msglist != NULL, -1);
 461
 462         msginfo = (MsgInfo *)msglist->data;
 463
 464         g_return_val_if_fail(msginfo != NULL, -1);
 465
 466         if (msginfo->folder == dest) {
 467                 g_warning("the src folder is identical to the dest.\n");
 468                 return -1;
 469         }
 470
 471         if (dest->last_num < 0) {
 472                 mh_get_last_num(folder, dest);
 473                 if (dest->last_num < 0) return -1;
 474         }
 475
 476         if ((MSG_IS_QUEUED(msginfo->flags) || MSG_IS_DRAFT(msginfo->flags))
 477         && !folder_has_parent_of_type(dest, F_QUEUE)
 478         && !folder_has_parent_of_type(dest, F_DRAFT)) {
 479                 /* as every msginfo comes from the same folder, it is supposed they
 480                  * will either match the preceding condition either all or none.
 481                  */
 482                 remove_special_headers = TRUE;
 483         } else if (!(MSG_IS_QUEUED(msginfo->flags) || MSG_IS_DRAFT(msginfo->flags))
 484         && (folder_has_parent_of_type(dest, F_QUEUE)
 485          || folder_has_parent_of_type(dest, F_DRAFT))) {
 486                 return -1;
 487         }
 488
 489         prefs = dest->prefs;
 490
 491         for (cur = msglist; cur; cur = cur->next) {
 492                 msginfo = (MsgInfo *)cur->data;
 493                 if (!msginfo)
 494                         continue;
 495                 srcfile = procmsg_get_message_file(msginfo);
 496                 destfile = mh_get_new_msg_filename(dest);
 497                 if (!destfile) {
 498                         g_free(srcfile);
 499                         continue;
 500                 }
 501
 502                 debug_print("Copying message %s%c%d to %s ...\n",
 503                             msginfo->folder->path, G_DIR_SEPARATOR,
 504                             msginfo->msgnum, dest->path);
 505
 506
 507                 if (remove_special_headers) {
 508                         if (procmsg_remove_special_headers(srcfile, destfile) !=0) {
 509                                 g_free(srcfile);
 510                                 g_free(destfile);
 511                                 continue;
 512                         }
 513                 } else if (copy_file(srcfile, destfile, TRUE) < 0) {
 514                         FILE_OP_ERROR(srcfile, "copy");
 515                         g_free(srcfile);
 516                         g_free(destfile);
 517                         continue;
 518                 }
 519                 if (prefs && prefs->enable_folder_chmod && prefs->folder_chmod) {
 520                         if (chmod(destfile, prefs->folder_chmod) < 0)
 521                                 FILE_OP_ERROR(destfile, "chmod");
 522
 523                         /* for mark file */
 524                         filemode = prefs->folder_chmod;
 525                         if (filemode & S_IRGRP) filemode |= S_IWGRP;
 526                         if (filemode & S_IROTH) filemode |= S_IWOTH;
 527                 }
 528                 if (relation)
 529                         g_relation_insert(relation, msginfo, GINT_TO_POINTER(dest->last_num+1));
 530                 g_free(srcfile);
 531                 g_free(destfile);
 532                 dest->last_num++;
 533         }
 534
 535         dest_need_scan = mh_scan_required(dest->folder, dest);
 536         if (!dest_need_scan)
 537                 dest->mtime = time(NULL);
 538         else
 539                 mh_write_sequences(dest);
 540
 541         return dest->last_num;
 542 }
 543
 544 static gint mh_remove_msg(Folder *folder, FolderItem *item, gint num)
 545 {
 546         gboolean need_scan = FALSE;
 547         gchar *file;
 548
 549         g_return_val_if_fail(item != NULL, -1);
 550
 551         file = mh_fetch_msg(folder, item, num);
 552         g_return_val_if_fail(file != NULL, -1);
 553
 554         need_scan = mh_scan_required(folder, item);
 555
 556         if (g_unlink(file) < 0) {
 557                 FILE_OP_ERROR(file, "unlink");
 558                 g_free(file);
 559                 return -1;
 560         }
 561
 562         if (!need_scan)
 563                 item->mtime = time(NULL);
 564
 565         g_free(file);
 566         return 0;
 567 }
 568
 569 static gint mh_remove_all_msg(Folder *folder, FolderItem *item)
 570 {
 571         gchar *path;
 572         gint val;
 573
 574         g_return_val_if_fail(item != NULL, -1);
 575
 576         path = folder_item_get_path(item);
 577         g_return_val_if_fail(path != NULL, -1);
 578         val = remove_all_numbered_files(path);
 579         g_free(path);
 580
 581         mh_write_sequences(item);
 582
 583         return val;
 584 }
 585
 586 static gboolean mh_is_msg_changed(Folder *folder, FolderItem *item,
 587                                   MsgInfo *msginfo)
 588 {
 589         struct stat s;
 590
 591         if (g_stat(itos(msginfo->msgnum), &s) < 0 ||
 592             msginfo->size  != s.st_size || (
 593                 (msginfo->mtime - s.st_mtime != 0) &&
 594                 (msginfo->mtime - s.st_mtime != 3600) &&
 595                 (msginfo->mtime - s.st_mtime != -3600)))
 596                 return TRUE;
 597
 598         return FALSE;
 599 }
 600
 601 static gint mh_scan_tree(Folder *folder)
 602 {
 603         FolderItem *item;
 604         gchar *rootpath;
 605
 606         g_return_val_if_fail(folder != NULL, -1);
 607
 608         if (!folder->node) {
 609                 item = folder_item_new(folder, folder->name, NULL);
 610                 item->folder = folder;
 611                 folder->node = item->node = g_node_new(item);
 612         } else
 613                 item = FOLDER_ITEM(folder->node->data);
 614
 615         rootpath = folder_item_get_path(item);
 616         if (change_dir(rootpath) < 0) {
 617                 g_free(rootpath);
 618                 return -1;
 619         }
 620         g_free(rootpath);
 621
 622         mh_create_tree(folder);
 623         mh_remove_missing_folder_items(folder);
 624         mh_scan_tree_recursive(item);
 625
 626         return 0;
 627 }
 628
 629 #define MAKE_DIR_IF_NOT_EXIST(dir) \
 630 { \
 631         if (!is_dir_exist(dir)) { \
 632                 if (is_file_exist(dir)) { \
 633                         g_warning("File `%s' already exists.\n" \
 634                                     "Can't create folder.", dir); \
 635                         return -1; \
 636                 } \
 637                 if (make_dir(dir) < 0) \
 638                         return -1; \
 639         } \
 640 }
 641
 642 static gint mh_create_tree(Folder *folder)
 643 {
 644         gchar *rootpath;
 645
 646         g_return_val_if_fail(folder != NULL, -1);
 647
 648         CHDIR_RETURN_VAL_IF_FAIL(get_mail_base_dir(), -1);
 649         rootpath = LOCAL_FOLDER(folder)->rootpath;
 650         MAKE_DIR_IF_NOT_EXIST(rootpath);
 651         CHDIR_RETURN_VAL_IF_FAIL(rootpath, -1);
 652         MAKE_DIR_IF_NOT_EXIST(INBOX_DIR);
 653         MAKE_DIR_IF_NOT_EXIST(OUTBOX_DIR);
 654         MAKE_DIR_IF_NOT_EXIST(QUEUE_DIR);
 655         MAKE_DIR_IF_NOT_EXIST(DRAFT_DIR);
 656         MAKE_DIR_IF_NOT_EXIST(TRASH_DIR);
 657
 658         return 0;
 659 }
 660
 661 #undef MAKE_DIR_IF_NOT_EXIST
 662
 663 static gchar *mh_item_get_path(Folder *folder, FolderItem *item)
 664 {
 665         gchar *folder_path, *path;
 666         gchar *real_path;
 667         g_return_val_if_fail(folder != NULL, NULL);
 668         g_return_val_if_fail(item != NULL, NULL);
 669
 670         folder_path = g_strdup(LOCAL_FOLDER(folder)->rootpath);
 671         g_return_val_if_fail(folder_path != NULL, NULL);
 672
 673         /* FIXME: [W32] The code below does not correctly merge
 674            relative filenames; there should be a function to handle
 675            this.  */
 676         if ( !is_relative_filename (folder_path) ) {
 677                 if (item->path)
 678                         path = g_strconcat(folder_path, G_DIR_SEPARATOR_S,
 679                                            item->path, NULL);
 680                 else
 681                         path = g_strdup(folder_path);
 682         } else {
 683                 if (item->path)
 684                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 685                                            folder_path, G_DIR_SEPARATOR_S,
 686                                            item->path, NULL);
 687                 else
 688                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 689                                            folder_path, NULL);
 690         }
 691         g_free(folder_path);
 692         real_path = mh_filename_from_utf8(path);
 693         if (!is_dir_exist(real_path) && is_dir_exist(path)) {
 694                 /* mmh, older version did put utf8 filenames instead of
 695                  * the correct encoding */
 696                 rename(path, real_path);
 697                 folder_item_scan(item);
 698         }
 699
 700         g_free(path);
 701         return real_path;
 702 }
 703
 704 static FolderItem *mh_create_folder(Folder *folder, FolderItem *parent,
 705                                     const gchar *name)
 706 {
 707         gchar *path, *real_name;
 708         gchar *fullpath;
 709         FolderItem *new_item;
 710         gchar *mh_sequences_filename;
 711         FILE *mh_sequences_file;
 712
 713         g_return_val_if_fail(folder != NULL, NULL);
 714         g_return_val_if_fail(parent != NULL, NULL);
 715         g_return_val_if_fail(name != NULL, NULL);
 716
 717         path = folder_item_get_path(parent);
 718         if (!is_dir_exist(path))
 719                 if (make_dir_hier(path) != 0)
 720                         return NULL;
 721
 722         real_name = mh_filename_from_utf8(name);
 723         fullpath = g_strconcat(path, G_DIR_SEPARATOR_S, real_name, NULL);
 724         g_free(real_name);
 725         g_free(path);
 726
 727         if (make_dir(fullpath) < 0) {
 728                 g_free(fullpath);
 729                 return NULL;
 730         }
 731
 732         g_free(fullpath);
 733
 734         if (parent->path)
 735                 path = g_strconcat(parent->path, G_DIR_SEPARATOR_S, name,
 736                                    NULL);
 737         else
 738                 path = g_strdup(name);
 739         new_item = folder_item_new(folder, name, path);
 740         folder_item_append(parent, new_item);
 741
 742         g_free(path);
 743
 744         path = folder_item_get_path(new_item);
 745         mh_sequences_filename = g_strconcat(path, G_DIR_SEPARATOR_S,
 746                                             ".mh_sequences", NULL);
 747         if ((mh_sequences_file = g_fopen(mh_sequences_filename, "a+b")) != NULL) {
 748                 fclose(mh_sequences_file);
 749         }
 750         g_free(mh_sequences_filename);
 751         g_free(path);
 752
 753         return new_item;
 754 }
 755
 756 static gint mh_rename_folder(Folder *folder, FolderItem *item,
 757                              const gchar *name)
 758 {
 759         gchar *real_name;
 760         gchar *oldpath;
 761         gchar *dirname;
 762         gchar *newpath, *utf8newpath;
 763         gchar *paths[2];
 764
 765         g_return_val_if_fail(folder != NULL, -1);
 766         g_return_val_if_fail(item != NULL, -1);
 767         g_return_val_if_fail(item->path != NULL, -1);
 768         g_return_val_if_fail(name != NULL, -1);
 769
 770         oldpath = folder_item_get_path(item);
 771         if (!is_dir_exist(oldpath))
 772                 make_dir_hier(oldpath);
 773
 774         dirname = g_path_get_dirname(oldpath);
 775         real_name = mh_filename_from_utf8(name);
 776         newpath = g_strconcat(dirname, G_DIR_SEPARATOR_S, real_name, NULL);
 777         g_free(real_name);
 778
 779         if (g_rename(oldpath, newpath) < 0) {
 780                 FILE_OP_ERROR(oldpath, "rename");
 781                 g_free(oldpath);
 782                 g_free(newpath);
 783                 return -1;
 784         }
 785
 786         g_free(oldpath);
 787         g_free(newpath);
 788
 789         if (strchr(item->path, G_DIR_SEPARATOR) != NULL) {
 790                 dirname = g_path_get_dirname(item->path);
 791                 utf8newpath = g_strconcat(dirname, G_DIR_SEPARATOR_S,
 792                                           name, NULL);
 793                 g_free(dirname);
 794         } else
 795                 utf8newpath = g_strdup(name);
 796
 797         g_free(item->name);
 798         item->name = g_strdup(name);
 799
 800         paths[0] = g_strdup(item->path);
 801         paths[1] = utf8newpath;
 802         g_node_traverse(item->node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 803                         mh_rename_folder_func, paths);
 804
 805         g_free(paths[0]);
 806         g_free(paths[1]);
 807         return 0;
 808 }
 809
 810 static gint mh_remove_folder(Folder *folder, FolderItem *item)
 811 {
 812         gchar *path;
 813
 814         g_return_val_if_fail(folder != NULL, -1);
 815         g_return_val_if_fail(item != NULL, -1);
 816         g_return_val_if_fail(item->path != NULL, -1);
 817
 818         path = folder_item_get_path(item);
 819         if (remove_dir_recursive(path) < 0) {
 820                 g_warning("can't remove directory `%s'\n", path);
 821                 g_free(path);
 822                 return -1;
 823         }
 824
 825         g_free(path);
 826         folder_item_remove(item);
 827         return 0;
 828 }
 829
 830 static MsgInfo *mh_parse_msg(const gchar *file, FolderItem *item)
 831 {
 832         MsgInfo *msginfo;
 833         MsgFlags flags;
 834
 835         g_return_val_if_fail(item != NULL, NULL);
 836         g_return_val_if_fail(file != NULL, NULL);
 837
 838         flags.perm_flags = MSG_NEW|MSG_UNREAD;
 839         flags.tmp_flags = 0;
 840
 841         if (folder_has_parent_of_type(item, F_QUEUE)) {
 842                 MSG_SET_TMP_FLAGS(flags, MSG_QUEUED);
 843         } else if (folder_has_parent_of_type(item, F_DRAFT)) {
 844                 MSG_SET_TMP_FLAGS(flags, MSG_DRAFT);
 845         }
 846
 847         msginfo = procheader_parse_file(file, flags, FALSE, FALSE);
 848         if (!msginfo) return NULL;
 849
 850         msginfo->msgnum = atoi(file);
 851         msginfo->folder = item;
 852
 853         return msginfo;
 854 }
 855
 856 static gboolean mh_remove_missing_folder_items_func(GNode *node, gpointer data)
 857 {
 858         FolderItem *item;
 859         gchar *path;
 860
 861         g_return_val_if_fail(node->data != NULL, FALSE);
 862
 863         if (G_NODE_IS_ROOT(node))
 864                 return FALSE;
 865
 866         item = FOLDER_ITEM(node->data);
 867
 868         path = folder_item_get_path(item);
 869         if (!is_dir_exist(path)) {
 870                 debug_print("folder '%s' not found. removing...\n", path);
 871                 folder_item_remove(item);
 872         }
 873         g_free(path);
 874
 875         return FALSE;
 876 }
 877
 878 static void mh_remove_missing_folder_items(Folder *folder)
 879 {
 880         g_return_if_fail(folder != NULL);
 881
 882         debug_print("searching missing folders...\n");
 883
 884         g_node_traverse(folder->node, G_POST_ORDER, G_TRAVERSE_ALL, -1,
 885                         mh_remove_missing_folder_items_func, folder);
 886 }
 887
 888 static void mh_scan_tree_recursive(FolderItem *item)
 889 {
 890         Folder *folder;
 891 #ifdef G_OS_WIN32
 892         GDir *dir;
 893 #else
 894         DIR *dp;
 895         struct dirent *d;
 896 #endif
 897         const gchar *dir_name;
 898         struct stat s;
 899         gchar *real_path, *entry, *utf8entry, *utf8name;
 900         gint n_msg = 0;
 901
 902         g_return_if_fail(item != NULL);
 903         g_return_if_fail(item->folder != NULL);
 904
 905         folder = item->folder;
 906
 907         real_path = item->path ? mh_filename_from_utf8(item->path) : g_strdup(".");
 908 #ifdef G_OS_WIN32
 909         dir = g_dir_open(real_path, 0, NULL);
 910         if (!dir) {
 911                 g_warning("failed to open directory: %s\n", real_path);
 912                 g_free(real_path);
 913                 return;
 914         }
 915 #else
 916         dp = opendir(real_path);
 917         if (!dp) {
 918                 FILE_OP_ERROR(real_path, "opendir");
 919                 return;
 920         }
 921 #endif
 922         g_free(real_path);
 923
 924         debug_print("scanning %s ...\n",
 925                     item->path ? item->path
 926                     : LOCAL_FOLDER(item->folder)->rootpath);
 927         if (folder->ui_func)
 928                 folder->ui_func(folder, item, folder->ui_func_data);
 929
 930 #ifdef G_OS_WIN32
 931         while ((dir_name = g_dir_read_name(dir)) != NULL) {
 932 #else
 933         while ((d = readdir(dp)) != NULL) {
 934                 dir_name = d->d_name;
 935 #endif
 936                 if (dir_name[0] == '.') continue;
 937
 938                 utf8name = mh_filename_to_utf8(dir_name);
 939                 if (item->path)
 940                         utf8entry = g_strconcat(item->path, G_DIR_SEPARATOR_S,
 941                                                 utf8name, NULL);
 942                 else
 943                         utf8entry = g_strdup(utf8name);
 944                 entry = mh_filename_from_utf8(utf8entry);
 945
 946                 if (
 947 #if !defined(G_OS_WIN32) && defined(HAVE_DIRENT_D_TYPE)
 948                         d->d_type == DT_DIR ||
 949                         (d->d_type == DT_UNKNOWN &&
 950 #endif
 951                         g_stat(entry, &s) == 0 && S_ISDIR(s.st_mode)
 952 #if !defined(G_OS_WIN32) && defined(HAVE_DIRENT_D_TYPE)
 953                         )
 954 #endif
 955                    ) {
 956                         FolderItem *new_item = NULL;
 957                         GNode *node;
 958
 959                         node = item->node;
 960                         for (node = node->children; node != NULL; node = node->next) {
 961                                 FolderItem *cur_item = FOLDER_ITEM(node->data);
 962                                 if (!strcmp2(cur_item->path, entry)) {
 963                                         new_item = cur_item;
 964                                         break;
 965                                 }
 966                         }
 967                         if (!new_item) {
 968                                 debug_print("new folder '%s' found.\n", entry);
 969                                 new_item = folder_item_new(folder, utf8name, utf8entry);
 970                                 folder_item_append(item, new_item);
 971                         }
 972
 973                         if (!item->path) {
 974                                 if (!folder->inbox &&
 975                                     !strcmp(dir_name, INBOX_DIR)) {
 976                                         new_item->stype = F_INBOX;
 977                                         folder->inbox = new_item;
 978                                 } else if (!folder->outbox &&
 979                                            !strcmp(dir_name, OUTBOX_DIR)) {
 980                                         new_item->stype = F_OUTBOX;
 981                                         folder->outbox = new_item;
 982                                 } else if (!folder->draft &&
 983                                            !strcmp(dir_name, DRAFT_DIR)) {
 984                                         new_item->stype = F_DRAFT;
 985                                         folder->draft = new_item;
 986                                 } else if (!folder->queue &&
 987                                            !strcmp(dir_name, QUEUE_DIR)) {
 988                                         new_item->stype = F_QUEUE;
 989                                         folder->queue = new_item;
 990                                 } else if (!folder->trash &&
 991                                            !strcmp(dir_name, TRASH_DIR)) {
 992                                         new_item->stype = F_TRASH;
 993                                         folder->trash = new_item;
 994                                 }
 995                         }
 996
 997                         mh_scan_tree_recursive(new_item);
 998                 } else if (to_number(dir_name) > 0) n_msg++;
 999
1000                 g_free(entry);
1001                 g_free(utf8entry);
1002                 g_free(utf8name);
1003         }
1004
1005 #ifdef G_OS_WIN32
1006         g_dir_close(dir);
1007 #else
1008         closedir(dp);
1009 #endif
1010
1011         item->mtime = time(NULL);
1012 }
1013
1014 static gboolean mh_rename_folder_func(GNode *node, gpointer data)
1015 {
1016         FolderItem *item = node->data;
1017         gchar **paths = data;
1018         const gchar *oldpath = paths[0];
1019         const gchar *newpath = paths[1];
1020         gchar *base;
1021         gchar *new_itempath;
1022         gint oldpathlen;
1023
1024         oldpathlen = strlen(oldpath);
1025         if (strncmp(oldpath, item->path, oldpathlen) != 0) {
1026                 g_warning("path doesn't match: %s, %s\n", oldpath, item->path);
1027                 return TRUE;
1028         }
1029
1030         base = item->path + oldpathlen;
1031         while (*base == G_DIR_SEPARATOR) base++;
1032         if (*base == '\0')
1033                 new_itempath = g_strdup(newpath);
1034         else
1035                 new_itempath = g_strconcat(newpath, G_DIR_SEPARATOR_S, base,
1036                                            NULL);
1037         g_free(item->path);
1038         item->path = new_itempath;
1039
1040         return FALSE;
1041 }
1042
1043 static gchar *mh_filename_from_utf8(const gchar *path)
1044 {
1045         gchar *real_path = g_filename_from_utf8(path, -1, NULL, NULL, NULL);
1046
1047         if (!real_path) {
1048                 g_warning("mh_filename_from_utf8: faild to convert character set\n");
1049                 real_path = g_strdup(path);
1050         }
1051
1052         return real_path;
1053 }
1054
1055 static gchar *mh_filename_to_utf8(const gchar *path)
1056 {
1057         gchar *utf8path = g_filename_to_utf8(path, -1, NULL, NULL, NULL);
1058         if (!utf8path) {
1059                 g_warning("mh_filename_to_utf8: faild to convert character set\n");
1060                 utf8path = g_strdup(path);
1061         }
1062
1063         return utf8path;
1064 }
1065
1066 static gint sort_cache_list_by_msgnum(gconstpointer a, gconstpointer b)
1067 {
1068         MsgInfo *msginfo_a = (MsgInfo *) a;
1069         MsgInfo *msginfo_b = (MsgInfo *) b;
1070
1071         return (msginfo_a->msgnum - msginfo_b->msgnum);
1072 }
1073
1074 static gchar *get_unseen_seq_name(void)
1075 {
1076         static gchar *seq_name = NULL;
1077         if (!seq_name) {
1078                 gchar buf[BUFFSIZE];
1079                 gchar *tmp;
1080                 gchar *profile_path = g_strconcat(
1081                         g_get_home_dir(), G_DIR_SEPARATOR_S,
1082                         ".mh_profile", NULL);
1083                 FILE *fp = g_fopen(profile_path, "r");
1084                 if (fp) {
1085                         while (fgets(buf, sizeof(buf), fp) != NULL) {
1086                                 if (!strncmp(buf, "Unseen-Sequence:", strlen("Unseen-Sequence:"))) {
1087                                         gchar *seq_tmp = buf+strlen("Unseen-Sequence:");
1088                                         while (*seq_tmp == ' ')
1089                                                 seq_tmp++;
1090                                         seq_name = g_strdup(seq_tmp);
1091                                         seq_name = strretchomp(seq_name);
1092                                         break;
1093                                 }
1094                         }
1095                         fclose(fp);
1096                 }
1097                 if (!seq_name)
1098                         seq_name = g_strdup("unseen");
1099                 tmp = g_strdup_printf("%s:", seq_name);
1100                 g_free(seq_name);
1101                 seq_name = tmp;
1102         }
1103         return seq_name;
1104 }
1105
1106 static gint mh_get_flags(Folder *folder, FolderItem *item,
1107                            MsgInfoList *msginfo_list, GRelation *msgflags)
1108 {
1109         gchar *mh_sequences_filename;
1110         FILE *mh_sequences_file;
1111         gchar buf[BUFFSIZE];
1112         gchar *unseen_list = NULL;
1113         gchar *path;
1114         MsgInfoList *mcur = NULL;
1115 /*
1116         GTimer *timer = g_timer_new();
1117         g_timer_start(timer);
1118 */
1119         if (!item)
1120                 return 0;
1121
1122         /* don't update from .mh_sequences if the item's opened: mails may have
1123          * been marked read/unread and it's not yet written in the file. */
1124         if (item->opened)
1125                 return 0;
1126
1127         path = folder_item_get_path(item);
1128
1129         mh_sequences_filename = g_strconcat(path, G_DIR_SEPARATOR_S,
1130                                             ".mh_sequences", NULL);
1131         g_free(path);
1132         if ((mh_sequences_file = g_fopen(mh_sequences_filename, "r+b")) != NULL) {
1133                 while (fgets(buf, sizeof(buf), mh_sequences_file) != NULL) {
1134                         if (!strncmp(buf, get_unseen_seq_name(), strlen(get_unseen_seq_name()))) {
1135                                 unseen_list = g_strdup(buf+strlen(get_unseen_seq_name()));
1136                                 break;
1137                         }
1138                 }
1139                 fclose(mh_sequences_file);
1140         }
1141
1142         g_free(mh_sequences_filename);
1143
1144         if (unseen_list) {
1145                 gchar *cur = NULL;
1146                 gchar *token = NULL, *next = NULL, *boundary = NULL;
1147                 gint num = 0;
1148                 GHashTable *unseen_table = g_hash_table_new(g_direct_hash, g_direct_equal);
1149
1150                 cur = unseen_list = strretchomp(unseen_list);
1151                 debug_print("found unseen list in .mh_sequences: %s\n", unseen_list);
1152 next_token:
1153                 while (*cur && *cur == ' ')
1154                         cur++;
1155
1156                 if ((next = strchr(cur, ' ')) != NULL) {
1157                         token = cur;
1158                         cur = next+1;
1159                         *next = '\0';
1160                 } else {
1161                         token = cur;
1162                         cur = NULL;
1163                 }
1164
1165                 if ((boundary = strchr(token, '-')) != NULL) {
1166                         gchar *start, *end;
1167                         int i;
1168                         start = token;
1169                         end = boundary+1;
1170                         *boundary='\0';
1171                         for (i = atoi(start); i <= atoi(end); i++) {
1172                                 g_hash_table_insert(unseen_table, GINT_TO_POINTER(i), GINT_TO_POINTER(1));
1173                         }
1174                 } else if ((num = atoi(token)) > 0) {
1175                         g_hash_table_insert(unseen_table, GINT_TO_POINTER(num), GINT_TO_POINTER(1));
1176                 }
1177
1178                 if (cur)
1179                         goto next_token;
1180                 for (mcur = msginfo_list; mcur; mcur = mcur->next) {
1181                         MsgInfo *msginfo = (MsgInfo *)mcur->data;
1182                         MsgPermFlags flags = msginfo->flags.perm_flags;
1183                         if (g_hash_table_lookup(unseen_table, GINT_TO_POINTER(msginfo->msgnum))) {
1184                                 flags |= MSG_UNREAD;
1185                         } else if (!(flags & MSG_NEW)) { /* don't mark new msgs as read */
1186                                 flags &= ~(MSG_UNREAD);
1187                         }
1188                         if (flags != msginfo->flags.perm_flags)
1189                                 g_relation_insert(msgflags, msginfo, GINT_TO_POINTER(flags));
1190                 }
1191                 g_hash_table_destroy(unseen_table);
1192                 g_free(unseen_list);
1193         }
1194 /*
1195         g_timer_stop(timer);
1196         printf("mh_get_flags: %f secs\n", g_timer_elapsed(timer, NULL));
1197         g_timer_destroy(timer);
1198 */
1199         return 0;
1200 }
1201
1202 static void mh_write_sequences(FolderItem *item)
1203 {
1204         gchar *mh_sequences_old, *mh_sequences_new;
1205         FILE *mh_sequences_old_fp, *mh_sequences_new_fp;
1206         gchar buf[BUFFSIZE];
1207         gchar *path = NULL;
1208 /*
1209         GTimer *timer = g_timer_new();
1210         g_timer_start(timer);
1211 */
1212         if (!item)
1213                 return;
1214
1215         path = folder_item_get_path(item);
1216
1217         mh_sequences_old = g_strconcat(path, G_DIR_SEPARATOR_S,
1218                                             ".mh_sequences", NULL);
1219         mh_sequences_new = g_strconcat(path, G_DIR_SEPARATOR_S,
1220                                             ".mh_sequences.new", NULL);
1221         if ((mh_sequences_new_fp = g_fopen(mh_sequences_new, "w+b")) != NULL) {
1222                 GSList *msglist = folder_item_get_msg_list(item);
1223                 GSList *cur;
1224                 MsgInfo *info = NULL;
1225                 gint start = -1, end = -1;
1226                 gchar *sequence = g_strdup("");
1227                 msglist = g_slist_sort(msglist, sort_cache_list_by_msgnum);
1228                 cur = msglist;
1229
1230                 /* write the unseen sequence */
1231                 do {
1232                         info = (MsgInfo *)(cur ? cur->data:NULL);
1233                         if (info && (MSG_IS_UNREAD(info->flags) || MSG_IS_NEW(info->flags))) {
1234                                 if (start < 0)
1235                                         start = end = info->msgnum;
1236                                 else
1237                                         end = info->msgnum;
1238                         } else {
1239                                 if (start > 0 && end > 0) {
1240                                         gchar *tmp = sequence;
1241                                         if (start != end)
1242                                                 sequence = g_strdup_printf("%s %d-%d ", tmp, start, end);
1243                                         else
1244                                                 sequence = g_strdup_printf("%s %d ", tmp, start);
1245                                         g_free(tmp);
1246                                         start = end = -1;
1247                                 }
1248                         }
1249                         cur = cur ? cur->next:NULL;
1250                 } while (cur || (start > 0 && end > 0));
1251                 if (sequence && strlen(sequence)) {
1252                         fprintf(mh_sequences_new_fp, "%s%s\n",
1253                                         get_unseen_seq_name(), sequence);
1254                         debug_print("wrote unseen sequence: '%s%s'\n",
1255                                         get_unseen_seq_name(), sequence);
1256                 }
1257                 /* rewrite the rest of the file */
1258                 if ((mh_sequences_old_fp = g_fopen(mh_sequences_old, "r+b")) != NULL) {
1259                         while (fgets(buf, sizeof(buf), mh_sequences_old_fp) != NULL) {
1260                                 if (strncmp(buf, get_unseen_seq_name(), strlen(get_unseen_seq_name())))
1261                                         fprintf(mh_sequences_new_fp, "%s", buf);
1262                         }
1263                         fclose(mh_sequences_old_fp);
1264                 }
1265
1266                 fclose(mh_sequences_new_fp);
1267                 g_rename(mh_sequences_new, mh_sequences_old);
1268                 g_free(sequence);
1269                 procmsg_msg_list_free(msglist);
1270         }
1271         g_free(mh_sequences_old);
1272         g_free(mh_sequences_new);
1273         g_free(path);
1274 /*
1275         g_timer_stop(timer);
1276         printf("mh_get_flags: %f secs\n", g_timer_elapsed(timer, NULL));
1277         g_timer_destroy(timer);
1278 */
1279 }
1280
1281 static int mh_item_close(Folder *folder, FolderItem *item)
1282 {
1283         mh_write_sequences(item);
1284         return 0;
1285 }