src/mh.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2013 Hiroyuki Yamamoto and the Claws Mail team
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 3 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #include "claws-features.h"
  23 #endif
  24
  25 #include "defs.h"
  26
  27 #include <glib.h>
  28 #include <glib/gi18n.h>
  29 #include <dirent.h>
  30 #include <sys/stat.h>
  31 #include <unistd.h>
  32 #include <string.h>
  33 #include <errno.h>
  34 #include <time.h>
  35
  36 #include "folder.h"
  37 #include "folder_item_prefs.h"
  38 #include "mh.h"
  39 #include "procmsg.h"
  40 #include "procheader.h"
  41 #include "utils.h"
  42 #include "codeconv.h"
  43 #include "statusbar.h"
  44 #include "gtkutils.h"
  45 #include "timing.h"
  46 #include "msgcache.h"
  47 #include "file-utils.h"
  48
  49 /* Define possible missing constants for Windows. */
  50 #ifdef G_OS_WIN32
  51 # ifndef S_IRGRP
  52 # define S_IRGRP 0
  53 # define S_IWGRP 0
  54 # endif
  55 # ifndef S_IROTH
  56 # define S_IROTH 0
  57 # define S_IWOTH 0
  58 # endif
  59 #endif
  60
  61
  62 static void     mh_folder_init          (Folder         *folder,
  63                                          const gchar    *name,
  64                                          const gchar    *path);
  65
  66 static Folder   *mh_folder_new          (const gchar    *name,
  67                                          const gchar    *path);
  68 static void     mh_folder_destroy       (Folder         *folder);
  69 static gchar   *mh_fetch_msg            (Folder         *folder,
  70                                          FolderItem     *item,
  71                                          gint            num);
  72 static MsgInfo *mh_get_msginfo          (Folder         *folder,
  73                                          FolderItem     *item,
  74                                          gint            num);
  75 static gint     mh_add_msg              (Folder         *folder,
  76                                          FolderItem     *dest,
  77                                          const gchar    *file,
  78                                          MsgFlags       *flags);
  79 static gint     mh_add_msgs             (Folder         *folder,
  80                                          FolderItem     *dest,
  81                                          GSList         *file_list,
  82                                          GHashTable     *relation);
  83 static gint     mh_copy_msg             (Folder         *folder,
  84                                          FolderItem     *dest,
  85                                          MsgInfo        *msginfo);
  86 static gint     mh_copy_msgs            (Folder         *folder,
  87                                          FolderItem     *dest,
  88                                          MsgInfoList    *msglist,
  89                                          GHashTable     *relation);
  90 static gint     mh_remove_msg           (Folder         *folder,
  91                                          FolderItem     *item,
  92                                          gint            num);
  93 static gint     mh_remove_msgs          (Folder         *folder,
  94                                          FolderItem     *item,
  95                                          MsgInfoList    *msglist,
  96                                          GHashTable     *relation);
  97 static gint     mh_remove_all_msg       (Folder         *folder,
  98                                          FolderItem     *item);
  99 static gboolean mh_is_msg_changed       (Folder         *folder,
 100                                          FolderItem     *item,
 101                                          MsgInfo        *msginfo);
 102
 103 static gint     mh_get_num_list         (Folder         *folder,
 104                                          FolderItem     *item,
 105                                          GSList         **list,
 106                                          gboolean       *old_uids_valid);
 107 static gint     mh_scan_tree            (Folder         *folder);
 108
 109 static gint    mh_create_tree           (Folder         *folder);
 110 static FolderItem *mh_create_folder     (Folder         *folder,
 111                                          FolderItem     *parent,
 112                                          const gchar    *name);
 113 static gint    mh_rename_folder         (Folder         *folder,
 114                                          FolderItem     *item,
 115                                          const gchar    *name);
 116 static gint    mh_remove_folder         (Folder         *folder,
 117                                          FolderItem     *item);
 118
 119 static gchar   *mh_get_new_msg_filename         (FolderItem     *dest);
 120
 121 static MsgInfo *mh_parse_msg                    (const gchar    *file,
 122                                                  FolderItem     *item);
 123 static void     mh_remove_missing_folder_items  (Folder         *folder);
 124 static gchar    *mh_filename_from_utf8          (const gchar    *path);
 125 static gchar    *mh_filename_to_utf8            (const gchar    *path);
 126 static void     mh_scan_tree_recursive          (FolderItem     *item);
 127
 128 static gboolean mh_rename_folder_func           (GNode          *node,
 129                                                  gpointer        data);
 130 static gchar   *mh_item_get_path                (Folder *folder,
 131                                                  FolderItem *item);
 132
 133 static gboolean mh_scan_required        (Folder         *folder,
 134                                          FolderItem     *item);
 135 static void mh_set_mtime                (Folder         *folder,
 136                                          FolderItem *item);
 137 static int mh_item_close                (Folder         *folder,
 138                                          FolderItem     *item);
 139 #if 0
 140 static gint mh_get_flags                (Folder *folder, FolderItem *item,
 141                                          MsgInfoList *msginfo_list, GHashTable *msgflags);
 142 #endif
 143 static void mh_write_sequences          (FolderItem     *item, gboolean remove_unseen);
 144
 145 static FolderClass mh_class;
 146
 147 FolderClass *mh_get_class(void)
 148 {
 149         if (mh_class.idstr == NULL) {
 150                 mh_class.type = F_MH;
 151                 mh_class.idstr = "mh";
 152                 mh_class.uistr = "MH";
 153                 mh_class.supports_server_search = FALSE;
 154
 155                 /* Folder functions */
 156                 mh_class.new_folder = mh_folder_new;
 157                 mh_class.destroy_folder = mh_folder_destroy;
 158                 mh_class.set_xml = folder_local_set_xml;
 159                 mh_class.get_xml = folder_local_get_xml;
 160                 mh_class.scan_tree = mh_scan_tree;
 161                 mh_class.create_tree = mh_create_tree;
 162
 163                 /* FolderItem functions */
 164                 mh_class.item_get_path = mh_item_get_path;
 165                 mh_class.create_folder = mh_create_folder;
 166                 mh_class.rename_folder = mh_rename_folder;
 167                 mh_class.remove_folder = mh_remove_folder;
 168                 mh_class.get_num_list = mh_get_num_list;
 169                 mh_class.scan_required = mh_scan_required;
 170                 mh_class.set_mtime = mh_set_mtime;
 171                 mh_class.close = mh_item_close;
 172                 mh_class.get_flags = NULL; /*mh_get_flags */;
 173
 174                 /* Message functions */
 175                 mh_class.get_msginfo = mh_get_msginfo;
 176                 mh_class.fetch_msg = mh_fetch_msg;
 177                 mh_class.add_msg = mh_add_msg;
 178                 mh_class.add_msgs = mh_add_msgs;
 179                 mh_class.copy_msg = mh_copy_msg;
 180                 mh_class.copy_msgs = mh_copy_msgs;
 181                 mh_class.search_msgs = folder_item_search_msgs_local;
 182                 mh_class.remove_msg = mh_remove_msg;
 183                 mh_class.remove_msgs = mh_remove_msgs;
 184                 mh_class.remove_all_msg = mh_remove_all_msg;
 185                 mh_class.is_msg_changed = mh_is_msg_changed;
 186         }
 187
 188         return &mh_class;
 189 }
 190
 191 static Folder *mh_folder_new(const gchar *name, const gchar *path)
 192 {
 193         Folder *folder;
 194
 195         folder = (Folder *)g_new0(MHFolder, 1);
 196         folder->klass = &mh_class;
 197         mh_folder_init(folder, name, path);
 198
 199         return folder;
 200 }
 201
 202 static void mh_folder_destroy(Folder *folder)
 203 {
 204         folder_local_folder_destroy(LOCAL_FOLDER(folder));
 205 }
 206
 207 static void mh_folder_init(Folder *folder, const gchar *name, const gchar *path)
 208 {
 209         folder_local_folder_init(folder, name, path);
 210
 211 }
 212
 213 gboolean mh_scan_required(Folder *folder, FolderItem *item)
 214 {
 215         gchar *path;
 216         GStatBuf s;
 217
 218         path = folder_item_get_path(item);
 219         cm_return_val_if_fail(path != NULL, FALSE);
 220
 221         if (g_stat(path, &s) < 0) {
 222                 FILE_OP_ERROR(path, "stat");
 223                 g_free(path);
 224                 return FALSE;
 225         }
 226
 227         if ((s.st_mtime > item->mtime) &&
 228                 (s.st_mtime - 3600 != item->mtime)) {
 229                 debug_print("MH scan required, folder updated: %s (%ld > %ld)\n",
 230                             path,
 231                             (long int) s.st_mtime,
 232                             (long int) item->mtime);
 233                 g_free(path);
 234                 return TRUE;
 235         }
 236
 237         debug_print("MH scan not required: %s (%ld <= %ld)\n",
 238                     path,
 239                     (long int) s.st_mtime,
 240                     (long int) item->mtime);
 241         g_free(path);
 242         return FALSE;
 243 }
 244
 245 static void mh_get_last_num(Folder *folder, FolderItem *item)
 246 {
 247         gchar *path, *fullpath;
 248         GDir *dp;
 249         const gchar *d;
 250         GError *error = NULL;
 251         gint max = 0;
 252         gint num;
 253
 254         cm_return_if_fail(item != NULL);
 255
 256         debug_print("mh_get_last_num(): Scanning %s ...\n", item->path?item->path:"(null)");
 257
 258         path = folder_item_get_path(item);
 259         cm_return_if_fail(path != NULL);
 260
 261         if ((dp = g_dir_open(path, 0, &error)) == NULL) {
 262                 g_warning("Couldn't open directory '%s': %s (%d)",
 263                                 path, error->message, error->code);
 264                 g_error_free(error);
 265                 g_free(path);
 266                 return;
 267         }
 268
 269         while ((d = g_dir_read_name(dp)) != NULL) {
 270                 fullpath = g_strconcat(path, G_DIR_SEPARATOR_S, d, NULL);
 271                 if ((num = to_number(d)) > 0 &&
 272                     g_file_test(fullpath, G_FILE_TEST_IS_REGULAR)) {
 273                         if (max < num)
 274                                 max = num;
 275                 }
 276                 g_free(fullpath);
 277
 278                 if (num % 2000 == 0)
 279                         GTK_EVENTS_FLUSH();
 280         }
 281         g_dir_close(dp);
 282         g_free(path);
 283
 284         debug_print("Last number in dir %s = %d\n", item->path?item->path:"(null)", max);
 285         item->last_num = max;
 286 }
 287
 288 gint mh_get_num_list(Folder *folder, FolderItem *item, GSList **list, gboolean *old_uids_valid)
 289 {
 290
 291         gchar *path;
 292         GDir *dp;
 293         const gchar *d;
 294         GError *error = NULL;
 295         gint num, nummsgs = 0;
 296
 297         cm_return_val_if_fail(item != NULL, -1);
 298
 299         debug_print("mh_get_num_list(): Scanning %s ...\n", item->path?item->path:"(null)");
 300
 301         *old_uids_valid = TRUE;
 302
 303         path = folder_item_get_path(item);
 304         cm_return_val_if_fail(path != NULL, -1);
 305
 306         if ((dp = g_dir_open(path, 0, &error)) == NULL) {
 307                 g_message("Couldn't open current directory: %s (%d).\n",
 308                                 error->message, error->code);
 309                 g_error_free(error);
 310                 g_free(path);
 311                 return -1;
 312         }
 313         g_free(path);
 314
 315         while ((d = g_dir_read_name(dp)) != NULL) {
 316                 if ((num = to_number(d)) > 0) {
 317                         *list = g_slist_prepend(*list, GINT_TO_POINTER(num));
 318                         nummsgs++;
 319                 }
 320         }
 321         g_dir_close(dp);
 322
 323         mh_set_mtime(folder, item);
 324         return nummsgs;
 325 }
 326
 327 static gchar *mh_fetch_msg(Folder *folder, FolderItem *item, gint num)
 328 {
 329         gchar *path;
 330         gchar *file;
 331
 332         cm_return_val_if_fail(item != NULL, NULL);
 333         cm_return_val_if_fail(num > 0, NULL);
 334
 335         path = folder_item_get_path(item);
 336         file = g_strconcat(path, G_DIR_SEPARATOR_S, itos(num), NULL);
 337
 338         if (!is_file_exist(file)) {
 339                 g_free(file);
 340                 g_free(path);
 341                 return NULL;
 342         }
 343         g_free(path);
 344         return file;
 345 }
 346
 347 static MsgInfo *mh_get_msginfo(Folder *folder, FolderItem *item, gint num)
 348 {
 349         MsgInfo *msginfo;
 350         gchar *file;
 351
 352         cm_return_val_if_fail(item != NULL, NULL);
 353         if (num <= 0)
 354                 return NULL;
 355
 356         file = mh_fetch_msg(folder, item, num);
 357         if (!file) return NULL;
 358
 359         msginfo = mh_parse_msg(file, item);
 360         if (msginfo)
 361                 msginfo->msgnum = num;
 362
 363         g_free(file);
 364
 365         return msginfo;
 366 }
 367
 368 static gchar *mh_get_new_msg_filename(FolderItem *dest)
 369 {
 370         gchar *destfile;
 371         gchar *destpath;
 372
 373         destpath = folder_item_get_path(dest);
 374         cm_return_val_if_fail(destpath != NULL, NULL);
 375
 376         if (dest->last_num < 0) {
 377                 mh_get_last_num(dest->folder, dest);
 378                 if (dest->last_num < 0) return NULL;
 379         }
 380
 381         if (!is_dir_exist(destpath))
 382                 make_dir_hier(destpath);
 383
 384         for (;;) {
 385                 destfile = g_strdup_printf("%s%c%d", destpath, G_DIR_SEPARATOR,
 386                                            dest->last_num + 1);
 387                 if (is_file_entry_exist(destfile)) {
 388                         dest->last_num++;
 389                         g_free(destfile);
 390                 } else
 391                         break;
 392         }
 393
 394         g_free(destpath);
 395
 396         return destfile;
 397 }
 398
 399 static gint mh_add_msg(Folder *folder, FolderItem *dest, const gchar *file, MsgFlags *flags)
 400 {
 401         gint ret;
 402         GSList file_list;
 403         MsgFileInfo fileinfo;
 404
 405         cm_return_val_if_fail(file != NULL, -1);
 406
 407         fileinfo.msginfo = NULL;
 408         fileinfo.file = (gchar *)file;
 409         fileinfo.flags = flags;
 410         file_list.data = &fileinfo;
 411         file_list.next = NULL;
 412
 413         ret = mh_add_msgs(folder, dest, &file_list, NULL);
 414         return ret;
 415 }
 416
 417 static gint mh_add_msgs(Folder *folder, FolderItem *dest, GSList *file_list,
 418                  GHashTable *relation)
 419 {
 420         gchar *destfile;
 421         GSList *cur;
 422         MsgFileInfo *fileinfo;
 423
 424         cm_return_val_if_fail(dest != NULL, -1);
 425         cm_return_val_if_fail(file_list != NULL, -1);
 426
 427         if (dest->last_num < 0) {
 428                 mh_get_last_num(folder, dest);
 429                 if (dest->last_num < 0) return -1;
 430         }
 431
 432         for (cur = file_list; cur != NULL; cur = cur->next) {
 433                 fileinfo = (MsgFileInfo *)cur->data;
 434
 435                 destfile = mh_get_new_msg_filename(dest);
 436                 if (destfile == NULL) return -1;
 437
 438 #ifdef G_OS_UNIX
 439                 if (link(fileinfo->file, destfile) < 0) {
 440 #endif
 441                         if (copy_file(fileinfo->file, destfile, TRUE) < 0) {
 442                                 g_warning("can't copy message %s to %s",
 443                                           fileinfo->file, destfile);
 444                                 g_free(destfile);
 445                                 return -1;
 446                         }
 447 #ifdef G_OS_UNIX
 448                 }
 449 #endif
 450
 451                 if (relation != NULL)
 452                         g_hash_table_insert(relation, fileinfo, GINT_TO_POINTER(dest->last_num + 1));
 453                 g_free(destfile);
 454                 dest->last_num++;
 455         }
 456         mh_write_sequences(dest, TRUE);
 457         return dest->last_num;
 458 }
 459
 460 static gint mh_copy_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
 461 {
 462         GSList msglist;
 463
 464         cm_return_val_if_fail(msginfo != NULL, -1);
 465
 466         msglist.data = msginfo;
 467         msglist.next = NULL;
 468
 469         return mh_copy_msgs(folder, dest, &msglist, NULL);
 470 }
 471
 472 static gint mh_copy_msgs(Folder *folder, FolderItem *dest, MsgInfoList *msglist,
 473                          GHashTable *relation)
 474 {
 475         gboolean dest_need_scan = FALSE;
 476         gboolean src_need_scan = FALSE;
 477         FolderItem *src = NULL;
 478         gchar *srcfile;
 479         gchar *destfile;
 480         FolderItemPrefs *prefs;
 481         MsgInfo *msginfo = NULL;
 482         MsgInfoList *cur = NULL;
 483         gint curnum = 0, total = 0;
 484         gchar *srcpath = NULL;
 485         gboolean full_fetch = FALSE;
 486         time_t last_dest_mtime = (time_t)0;
 487         time_t last_src_mtime = (time_t)0;
 488
 489         cm_return_val_if_fail(dest != NULL, -1);
 490         cm_return_val_if_fail(msglist != NULL, -1);
 491
 492         msginfo = (MsgInfo *)msglist->data;
 493
 494         cm_return_val_if_fail(msginfo != NULL, -1);
 495
 496         if (msginfo->folder == dest) {
 497                 g_warning("the src folder is identical to the dest.");
 498                 return -1;
 499         }
 500
 501         if (msginfo->folder->folder != dest->folder)
 502                 full_fetch = TRUE;
 503
 504         if (FOLDER_TYPE(msginfo->folder->folder) == F_MH) {
 505                 src = msginfo->folder;
 506         }
 507
 508         if (dest->last_num < 0) {
 509                 mh_get_last_num(folder, dest);
 510                 if (dest->last_num < 0) return -1;
 511         }
 512
 513         prefs = dest->prefs;
 514
 515         srcpath = folder_item_get_path(msginfo->folder);
 516
 517         dest_need_scan = mh_scan_required(dest->folder, dest);
 518         last_dest_mtime = dest->mtime;
 519
 520         if (src) {
 521                 src_need_scan = mh_scan_required(src->folder, src);
 522                 last_src_mtime = src->mtime;
 523         }
 524
 525         total = g_slist_length(msglist);
 526         if (total > 100) {
 527                 if (MSG_IS_MOVE(msginfo->flags))
 528                         statusbar_print_all(_("Moving messages..."));
 529                 else
 530                         statusbar_print_all(_("Copying messages..."));
 531         }
 532         for (cur = msglist; cur; cur = cur->next) {
 533                 msginfo = (MsgInfo *)cur->data;
 534                 if (!msginfo) {
 535                         goto err_reset_status;
 536                 }
 537                 if (!full_fetch) {
 538                         srcfile = g_strconcat(srcpath,
 539                                 G_DIR_SEPARATOR_S,
 540                                 itos(msginfo->msgnum), NULL);
 541                 } else {
 542                         srcfile = procmsg_get_message_file(msginfo);
 543                 }
 544                 if (!srcfile) {
 545                         goto err_reset_status;
 546                 }
 547                 destfile = mh_get_new_msg_filename(dest);
 548                 if (!destfile) {
 549                         g_free(srcfile);
 550                         goto err_reset_status;
 551                 }
 552
 553                 if (total > 100) {
 554                         statusbar_progress_all(curnum, total, 100);
 555                         if (curnum % 100 == 0)
 556                                 GTK_EVENTS_FLUSH();
 557                         curnum++;
 558                 }
 559
 560                 debug_print("Copying message %s%c%d to %s ...\n",
 561                             msginfo->folder->path, G_DIR_SEPARATOR,
 562                             msginfo->msgnum, dest->path);
 563
 564
 565                 if (MSG_IS_MOVE(msginfo->flags)) {
 566                         msginfo->flags.tmp_flags &= ~MSG_MOVE_DONE;
 567                         if (move_file(srcfile, destfile, TRUE) < 0) {
 568                                 FILE_OP_ERROR(srcfile, "move");
 569                                 if (copy_file(srcfile, destfile, TRUE) < 0) {
 570                                         FILE_OP_ERROR(srcfile, "copy");
 571                                         g_free(srcfile);
 572                                         g_free(destfile);
 573                                         goto err_reset_status;
 574                                 }
 575                         } else {
 576                                 /* say unlinking's not necessary */
 577                                 msginfo->flags.tmp_flags |= MSG_MOVE_DONE;
 578                         }
 579                 } else if (copy_file(srcfile, destfile, TRUE) < 0) {
 580                         FILE_OP_ERROR(srcfile, "copy");
 581                         g_free(srcfile);
 582                         g_free(destfile);
 583                         goto err_reset_status;
 584                 }
 585                 if (prefs && prefs->enable_folder_chmod && prefs->folder_chmod) {
 586                         if (chmod(destfile, prefs->folder_chmod) < 0)
 587                                 FILE_OP_ERROR(destfile, "chmod");
 588                 }
 589                 if (relation) {
 590                         if (g_hash_table_lookup(relation, msginfo) != NULL)
 591                                 g_warning("already in: %p", msginfo);
 592
 593                         g_hash_table_insert(relation, msginfo, GINT_TO_POINTER(dest->last_num+1));
 594                 }
 595                 g_free(srcfile);
 596                 g_free(destfile);
 597                 dest->last_num++;
 598         }
 599
 600         g_free(srcpath);
 601         mh_write_sequences(dest, TRUE);
 602
 603         if (dest->mtime == last_dest_mtime && !dest_need_scan) {
 604                 mh_set_mtime(folder, dest);
 605         }
 606
 607         if (src && src->mtime == last_src_mtime && !src_need_scan) {
 608                 mh_set_mtime(folder, src);
 609         }
 610
 611         if (total > 100) {
 612                 statusbar_progress_all(0,0,0);
 613                 statusbar_pop_all();
 614         }
 615         return dest->last_num;
 616 err_reset_status:
 617         g_free(srcpath);
 618         mh_write_sequences(dest, TRUE);
 619         if (total > 100) {
 620                 statusbar_progress_all(0,0,0);
 621                 statusbar_pop_all();
 622         }
 623         return -1;
 624
 625 }
 626
 627 static gint mh_remove_msg(Folder *folder, FolderItem *item, gint num)
 628 {
 629         gboolean need_scan = FALSE;
 630         time_t last_mtime = (time_t)0;
 631         gchar *file;
 632
 633         cm_return_val_if_fail(item != NULL, -1);
 634
 635         file = mh_fetch_msg(folder, item, num);
 636         cm_return_val_if_fail(file != NULL, -1);
 637
 638         need_scan = mh_scan_required(folder, item);
 639         last_mtime = item->mtime;
 640
 641         if (claws_unlink(file) < 0) {
 642                 FILE_OP_ERROR(file, "unlink");
 643                 g_free(file);
 644                 return -1;
 645         }
 646
 647         if (item->mtime == last_mtime && !need_scan) {
 648                 mh_set_mtime(folder, item);
 649         }
 650         g_free(file);
 651         return 0;
 652 }
 653
 654 static gint mh_remove_msgs(Folder *folder, FolderItem *item,
 655                     MsgInfoList *msglist, GHashTable *relation)
 656 {
 657         gboolean need_scan = FALSE;
 658         gchar *path, *file;
 659         time_t last_mtime = (time_t)0;
 660         MsgInfoList *cur;
 661         gint total = 0, curnum = 0;
 662
 663         cm_return_val_if_fail(item != NULL, -1);
 664
 665         path = folder_item_get_path(item);
 666
 667         need_scan = mh_scan_required(folder, item);
 668         last_mtime = item->mtime;
 669
 670         total = g_slist_length(msglist);
 671         if (total > 100) {
 672                 statusbar_print_all(_("Deleting messages..."));
 673         }
 674
 675         for (cur = msglist; cur; cur = cur->next) {
 676                 MsgInfo *msginfo = (MsgInfo *)cur->data;
 677                 if (msginfo == NULL)
 678                         continue;
 679                 if (MSG_IS_MOVE(msginfo->flags) && MSG_IS_MOVE_DONE(msginfo->flags)) {
 680                         msginfo->flags.tmp_flags &= ~MSG_MOVE_DONE;
 681                         continue;
 682                 }
 683                 if (total > 100) {
 684                         statusbar_progress_all(curnum, total, 100);
 685                         if (curnum % 100 == 0)
 686                                 GTK_EVENTS_FLUSH();
 687                         curnum++;
 688                 }
 689
 690                 file = g_strconcat(path, G_DIR_SEPARATOR_S, itos(msginfo->msgnum), NULL);
 691                 if (file == NULL)
 692                         continue;
 693
 694                 if (claws_unlink(file) < 0) {
 695                         g_free(file);
 696                         continue;
 697                 }
 698
 699                 g_free(file);
 700         }
 701
 702         if (total > 100) {
 703                 statusbar_progress_all(0,0,0);
 704                 statusbar_pop_all();
 705         }
 706         if (item->mtime == last_mtime && !need_scan) {
 707                 mh_set_mtime(folder, item);
 708         }
 709
 710         g_free(path);
 711         return 0;
 712 }
 713
 714 static gint mh_remove_all_msg(Folder *folder, FolderItem *item)
 715 {
 716         gchar *path;
 717         gint val;
 718
 719         cm_return_val_if_fail(item != NULL, -1);
 720
 721         path = folder_item_get_path(item);
 722         cm_return_val_if_fail(path != NULL, -1);
 723         val = remove_all_numbered_files(path);
 724         g_free(path);
 725
 726         mh_write_sequences(item, TRUE);
 727
 728         return val;
 729 }
 730
 731 static gboolean mh_is_msg_changed(Folder *folder, FolderItem *item,
 732                                   MsgInfo *msginfo)
 733 {
 734 #ifdef G_OS_WIN32
 735         GFile *f;
 736         GFileInfo *fi;
 737         GTimeVal tv;
 738         GError *error = NULL;
 739 #else
 740         GStatBuf s;
 741         int r;
 742 #endif
 743         gchar *path;
 744         gchar *parent_path;
 745
 746         parent_path = folder_item_get_path(item);
 747         path = g_strdup_printf("%s%c%d", parent_path,
 748                         G_DIR_SEPARATOR, msginfo->msgnum);
 749         g_free(parent_path);
 750
 751 #ifdef G_OS_WIN32
 752         f = g_file_new_for_path(path);
 753         g_free(path);
 754         fi = g_file_query_info(f, "standard::size,time::modified",
 755                         G_FILE_QUERY_INFO_NONE, NULL, &error);
 756         if (error != NULL) {
 757                 g_warning(error->message);
 758                 g_error_free(error);
 759                 g_object_unref(f);
 760                 return TRUE;
 761         }
 762
 763         g_file_info_get_modification_time(fi, &tv);
 764         if (msginfo->size != g_file_info_get_size(fi) || (
 765                         (msginfo->mtime - tv.tv_sec != 0) &&
 766                         abs(msginfo->mtime - tv.tv_sec) != 3600)) {
 767                 g_error_free(error);
 768                 g_object_unref(f);
 769                 return TRUE;
 770         }
 771 #else
 772         r = g_stat(path, &s);
 773         g_free(path);
 774         if (r < 0 ||
 775             msginfo->size  != s.st_size || (
 776                 (msginfo->mtime - s.st_mtime != 0) &&
 777                 (msginfo->mtime - s.st_mtime != 3600) &&
 778                 (msginfo->mtime - s.st_mtime != -3600))) {
 779                 return TRUE;
 780         }
 781 #endif
 782
 783         return FALSE;
 784 }
 785
 786 static gint mh_scan_tree(Folder *folder)
 787 {
 788         FolderItem *item;
 789
 790         cm_return_val_if_fail(folder != NULL, -1);
 791
 792         if (!folder->node) {
 793                 item = folder_item_new(folder, folder->name, NULL);
 794                 item->folder = folder;
 795                 folder->node = item->node = g_node_new(item);
 796         } else
 797                 item = FOLDER_ITEM(folder->node->data);
 798
 799         mh_create_tree(folder);
 800         mh_remove_missing_folder_items(folder);
 801         mh_scan_tree_recursive(item);
 802
 803         return 0;
 804 }
 805
 806 #define MAKE_DIR_IF_NOT_EXIST(dir) \
 807 { \
 808         if (!is_dir_exist(dir)) { \
 809                 if (is_file_exist(dir)) { \
 810                         g_warning("File '%s' already exists. " \
 811                                     "Can't create folder.", dir); \
 812                         return -1; \
 813                 } \
 814                 if (make_dir_hier(dir) < 0) \
 815                         return -1; \
 816                 debug_print("Created dir '%s'\n", dir); \
 817         } \
 818 }
 819
 820 static gint mh_create_tree(Folder *folder)
 821 {
 822         gchar *rootpath, *f, *path;
 823
 824         cm_return_val_if_fail(folder != NULL, -1);
 825
 826         rootpath = LOCAL_FOLDER(folder)->rootpath;
 827 #ifdef G_OS_UNIX
 828         if (*rootpath == '/') {
 829 #elif defined G_OS_WIN32
 830         if (g_ascii_isalpha(*rootpath) && !strncmp(rootpath + 1, ":\\", 2)) {
 831 #endif
 832                 /* Folder path is absolute. */
 833                 rootpath = g_strdup(rootpath);
 834         } else {
 835                 /* Folder path is relative, using mail base dir. */
 836                 rootpath = g_strconcat(get_mail_base_dir(), G_DIR_SEPARATOR_S,
 837                                 rootpath, NULL);
 838         }
 839
 840         MAKE_DIR_IF_NOT_EXIST(rootpath);
 841
 842         /* Create special directories as needed */
 843         if (folder->inbox != NULL &&
 844                         folder->inbox->path != NULL)
 845                 f = folder->inbox->path;
 846         else
 847                 f = INBOX_DIR;
 848         path = g_strconcat(rootpath, G_DIR_SEPARATOR_S, f, NULL);
 849         MAKE_DIR_IF_NOT_EXIST(path);
 850         g_free(path);
 851
 852         if (folder->outbox != NULL &&
 853                         folder->outbox->path != NULL)
 854                 f = folder->outbox->path;
 855         else
 856                 f = OUTBOX_DIR;
 857         path = g_strconcat(rootpath, G_DIR_SEPARATOR_S, f, NULL);
 858         MAKE_DIR_IF_NOT_EXIST(path);
 859         g_free(path);
 860
 861         if (folder->draft != NULL &&
 862                         folder->draft->path != NULL)
 863                 f = folder->draft->path;
 864         else
 865                 f = DRAFT_DIR;
 866         path = g_strconcat(rootpath, G_DIR_SEPARATOR_S, f, NULL);
 867         MAKE_DIR_IF_NOT_EXIST(path);
 868         g_free(path);
 869
 870         if (folder->queue != NULL &&
 871                         folder->queue->path != NULL)
 872                 f = folder->queue->path;
 873         else
 874                 f = QUEUE_DIR;
 875         path = g_strconcat(rootpath, G_DIR_SEPARATOR_S, f, NULL);
 876         MAKE_DIR_IF_NOT_EXIST(path);
 877         g_free(path);
 878
 879         if (folder->trash != NULL &&
 880                         folder->trash->path != NULL)
 881                 f = folder->trash->path;
 882         else
 883                 f = TRASH_DIR;
 884         path = g_strconcat(rootpath, G_DIR_SEPARATOR_S, f, NULL);
 885         MAKE_DIR_IF_NOT_EXIST(path);
 886         g_free(path);
 887
 888         g_free(rootpath);
 889         return 0;
 890 }
 891
 892 #undef MAKE_DIR_IF_NOT_EXIST
 893
 894 static gchar *mh_item_get_path(Folder *folder, FolderItem *item)
 895 {
 896         gchar *folder_path, *path;
 897         gchar *real_path;
 898         cm_return_val_if_fail(folder != NULL, NULL);
 899         cm_return_val_if_fail(item != NULL, NULL);
 900
 901         folder_path = g_strdup(LOCAL_FOLDER(folder)->rootpath);
 902         cm_return_val_if_fail(folder_path != NULL, NULL);
 903
 904         /* FIXME: [W32] The code below does not correctly merge
 905            relative filenames; there should be a function to handle
 906            this.  */
 907         if ( !is_relative_filename (folder_path) ) {
 908                 if (item->path)
 909                         path = g_strconcat(folder_path, G_DIR_SEPARATOR_S,
 910                                            item->path, NULL);
 911                 else
 912                         path = g_strdup(folder_path);
 913         } else {
 914                 if (item->path)
 915                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 916                                            folder_path, G_DIR_SEPARATOR_S,
 917                                            item->path, NULL);
 918                 else
 919                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 920                                            folder_path, NULL);
 921         }
 922         g_free(folder_path);
 923         real_path = mh_filename_from_utf8(path);
 924         if (!is_dir_exist(real_path) && is_dir_exist(path)) {
 925                 /* mmh, older version did put utf8 filenames instead of
 926                  * the correct encoding */
 927                 if (g_rename(path, real_path) == 0)
 928                         folder_item_scan(item);
 929         }
 930
 931         g_free(path);
 932         return real_path;
 933 }
 934
 935 static gboolean mh_renumber_msg(MsgInfo *info)
 936 {
 937         gchar *src, *dest;
 938         gboolean result = FALSE;
 939         guint num;
 940         cm_return_val_if_fail(info != NULL, FALSE);
 941
 942         src = folder_item_fetch_msg(info->folder, info->msgnum);
 943         dest = mh_get_new_msg_filename(info->folder);
 944         num = info->folder->last_num + 1;
 945
 946         if (move_file(src, dest, FALSE) == 0) {
 947                 msgcache_remove_msg(info->folder->cache, info->msgnum);
 948                 info->msgnum = num;
 949                 msgcache_add_msg(info->folder->cache, info);
 950                 result = TRUE;
 951         }
 952
 953         g_free(src);
 954         g_free(dest);
 955
 956         return result;
 957 }
 958
 959 static FolderItem *mh_create_folder(Folder *folder, FolderItem *parent,
 960                                     const gchar *name)
 961 {
 962         gchar *path, *real_name;
 963         gchar *fullpath;
 964         FolderItem *new_item;
 965         gchar *mh_sequences_filename;
 966         FILE *mh_sequences_file;
 967
 968         cm_return_val_if_fail(folder != NULL, NULL);
 969         cm_return_val_if_fail(parent != NULL, NULL);
 970         cm_return_val_if_fail(name != NULL, NULL);
 971
 972         path = folder_item_get_path(parent);
 973         if (!is_dir_exist(path))
 974                 if (make_dir_hier(path) != 0)
 975                         return NULL;
 976
 977         real_name = mh_filename_from_utf8(name);
 978         fullpath = g_strconcat(path, G_DIR_SEPARATOR_S, real_name, NULL);
 979         g_free(real_name);
 980         g_free(path);
 981
 982         if (to_number(name) > 0) {
 983                 MsgInfo *info = folder_item_get_msginfo(parent, to_number(name));
 984                 if (info != NULL) {
 985                         gboolean ok = mh_renumber_msg(info);
 986                         procmsg_msginfo_free(&info);
 987                         if (!ok) {
 988                                 g_free(fullpath);
 989                                 return NULL;
 990                         }
 991                 }
 992         }
 993
 994         if (make_dir(fullpath) < 0) {
 995                 g_free(fullpath);
 996                 return NULL;
 997         }
 998
 999         g_free(fullpath);
1000
1001         if (parent->path)
1002                 path = g_strconcat(parent->path, G_DIR_SEPARATOR_S, name,
1003                                    NULL);
1004         else
1005                 path = g_strdup(name);
1006         new_item = folder_item_new(folder, name, path);
1007         folder_item_append(parent, new_item);
1008
1009         g_free(path);
1010
1011         path = folder_item_get_path(new_item);
1012         mh_sequences_filename = g_strconcat(path, G_DIR_SEPARATOR_S,
1013                                             ".mh_sequences", NULL);
1014         if ((mh_sequences_file = claws_fopen(mh_sequences_filename, "a+b")) != NULL) {
1015                 claws_fclose(mh_sequences_file);
1016         }
1017         g_free(mh_sequences_filename);
1018         g_free(path);
1019
1020         return new_item;
1021 }
1022
1023 static gint mh_rename_folder(Folder *folder, FolderItem *item,
1024                              const gchar *name)
1025 {
1026         gchar *real_name;
1027         gchar *oldpath;
1028         gchar *dirname;
1029         gchar *newpath, *utf8newpath;
1030         gchar *paths[2];
1031
1032         cm_return_val_if_fail(folder != NULL, -1);
1033         cm_return_val_if_fail(item != NULL, -1);
1034         cm_return_val_if_fail(item->path != NULL, -1);
1035         cm_return_val_if_fail(name != NULL, -1);
1036
1037         oldpath = folder_item_get_path(item);
1038         if (!is_dir_exist(oldpath))
1039                 make_dir_hier(oldpath);
1040
1041         dirname = g_path_get_dirname(oldpath);
1042         real_name = mh_filename_from_utf8(name);
1043         newpath = g_strconcat(dirname, G_DIR_SEPARATOR_S, real_name, NULL);
1044         g_free(real_name);
1045
1046         if (g_rename(oldpath, newpath) < 0) {
1047                 FILE_OP_ERROR(oldpath, "rename");
1048                 g_free(oldpath);
1049                 g_free(newpath);
1050                 return -1;
1051         }
1052
1053         g_free(oldpath);
1054         g_free(newpath);
1055
1056         if (strchr(item->path, G_DIR_SEPARATOR) != NULL) {
1057                 dirname = g_path_get_dirname(item->path);
1058                 utf8newpath = g_strconcat(dirname, G_DIR_SEPARATOR_S,
1059                                           name, NULL);
1060                 g_free(dirname);
1061         } else
1062                 utf8newpath = g_strdup(name);
1063
1064         g_free(item->name);
1065         item->name = g_strdup(name);
1066
1067         paths[0] = g_strdup(item->path);
1068         paths[1] = utf8newpath;
1069         g_node_traverse(item->node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
1070                         mh_rename_folder_func, paths);
1071
1072         g_free(paths[0]);
1073         g_free(paths[1]);
1074         return 0;
1075 }
1076
1077 static gint mh_remove_folder(Folder *folder, FolderItem *item)
1078 {
1079         gchar *path;
1080         gint ret;
1081
1082         cm_return_val_if_fail(folder != NULL, -1);
1083         cm_return_val_if_fail(item != NULL, -1);
1084         cm_return_val_if_fail(item->path != NULL, -1);
1085
1086         path = folder_item_get_path(item);
1087         if ((ret = remove_dir_recursive(path)) < 0) {
1088                 g_warning("can't remove directory '%s'", path);
1089                 g_free(path);
1090                 return ret;
1091         }
1092
1093         g_free(path);
1094         folder_item_remove(item);
1095         return 0;
1096 }
1097
1098 static MsgInfo *mh_parse_msg(const gchar *file, FolderItem *item)
1099 {
1100         MsgInfo *msginfo;
1101         MsgFlags flags;
1102
1103         cm_return_val_if_fail(item != NULL, NULL);
1104         cm_return_val_if_fail(file != NULL, NULL);
1105
1106         flags.perm_flags = MSG_NEW|MSG_UNREAD;
1107         flags.tmp_flags = 0;
1108
1109         if (folder_has_parent_of_type(item, F_QUEUE)) {
1110                 MSG_SET_TMP_FLAGS(flags, MSG_QUEUED);
1111         } else if (folder_has_parent_of_type(item, F_DRAFT)) {
1112                 MSG_SET_TMP_FLAGS(flags, MSG_DRAFT);
1113         }
1114
1115         msginfo = procheader_parse_file(file, flags, FALSE, FALSE);
1116         if (!msginfo) return NULL;
1117
1118         msginfo->msgnum = atoi(file);
1119         msginfo->folder = item;
1120
1121         return msginfo;
1122 }
1123
1124 static gboolean mh_remove_missing_folder_items_func(GNode *node, gpointer data)
1125 {
1126         FolderItem *item;
1127         gchar *path;
1128
1129         cm_return_val_if_fail(node->data != NULL, FALSE);
1130
1131         if (G_NODE_IS_ROOT(node))
1132                 return FALSE;
1133
1134         item = FOLDER_ITEM(node->data);
1135
1136         path = folder_item_get_path(item);
1137         if (!is_dir_exist(path)) {
1138                 debug_print("folder '%s' not found. removing...\n", path?path:"(null)");
1139                 folder_item_remove(item);
1140         }
1141         g_free(path);
1142
1143         return FALSE;
1144 }
1145
1146 static void mh_remove_missing_folder_items(Folder *folder)
1147 {
1148         cm_return_if_fail(folder != NULL);
1149
1150         debug_print("searching missing folders...\n");
1151
1152         g_node_traverse(folder->node, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1153                         mh_remove_missing_folder_items_func, folder);
1154 }
1155
1156 static void mh_scan_tree_recursive(FolderItem *item)
1157 {
1158         Folder *folder;
1159         GDir *dir;
1160         const gchar *dir_name;
1161         gchar *entry, *utf8entry, *utf8name, *path;
1162         gint n_msg = 0;
1163         GError *error = NULL;
1164
1165         cm_return_if_fail(item != NULL);
1166         cm_return_if_fail(item->folder != NULL);
1167
1168         folder = item->folder;
1169
1170         path = folder_item_get_path(item);
1171         debug_print("mh_scan_tree_recursive() opening '%s'\n", path);
1172         dir = g_dir_open(path, 0, &error);
1173         if (!dir) {
1174                 g_warning("failed to open directory '%s': %s (%d)",
1175                                 path, error->message, error->code);
1176                 g_error_free(error);
1177                 g_free(path);
1178                 return;
1179         }
1180
1181         debug_print("scanning %s ...\n",
1182                     item->path ? item->path
1183                     : LOCAL_FOLDER(item->folder)->rootpath);
1184         if (folder->ui_func)
1185                 folder->ui_func(folder, item, folder->ui_func_data);
1186
1187         while ((dir_name = g_dir_read_name(dir)) != NULL) {
1188                 if (dir_name[0] == '.') continue;
1189
1190                 entry = g_strconcat(path, G_DIR_SEPARATOR_S, dir_name, NULL);
1191
1192                 utf8name = mh_filename_to_utf8(dir_name);
1193                 if (item->path)
1194                         utf8entry = g_strconcat(item->path, G_DIR_SEPARATOR_S,
1195                                                 utf8name, NULL);
1196                 else
1197                         utf8entry = g_strdup(utf8name);
1198
1199                 if (g_file_test(entry, G_FILE_TEST_IS_DIR)) {
1200                         FolderItem *new_item = NULL;
1201                         GNode *node;
1202
1203                         node = item->node;
1204                         for (node = node->children; node != NULL; node = node->next) {
1205                                 FolderItem *cur_item = FOLDER_ITEM(node->data);
1206                                 gchar *curpath = folder_item_get_path(cur_item);
1207                                 if (!g_strcmp0(curpath, entry)) {
1208                                         new_item = cur_item;
1209                                         g_free(curpath);
1210                                         break;
1211                                 }
1212                                 g_free(curpath);
1213                         }
1214                         if (!new_item) {
1215                                 debug_print("new folder '%s' found.\n", entry);
1216                                 new_item = folder_item_new(folder, utf8name, utf8entry);
1217                                 folder_item_append(item, new_item);
1218                         }
1219
1220                         if (!item->path) {
1221                                 if (!folder->inbox &&
1222                                     !strcmp(dir_name, INBOX_DIR)) {
1223                                         new_item->stype = F_INBOX;
1224                                         folder->inbox = new_item;
1225                                 } else if (!folder->outbox &&
1226                                            !strcmp(dir_name, OUTBOX_DIR)) {
1227                                         new_item->stype = F_OUTBOX;
1228                                         folder->outbox = new_item;
1229                                 } else if (!folder->draft &&
1230                                            !strcmp(dir_name, DRAFT_DIR)) {
1231                                         new_item->stype = F_DRAFT;
1232                                         folder->draft = new_item;
1233                                 } else if (!folder->queue &&
1234                                            !strcmp(dir_name, QUEUE_DIR)) {
1235                                         new_item->stype = F_QUEUE;
1236                                         folder->queue = new_item;
1237                                 } else if (!folder->trash &&
1238                                            !strcmp(dir_name, TRASH_DIR)) {
1239                                         new_item->stype = F_TRASH;
1240                                         folder->trash = new_item;
1241                                 }
1242                         }
1243
1244                         mh_scan_tree_recursive(new_item);
1245                 } else if (to_number(dir_name) > 0) n_msg++;
1246
1247                 g_free(entry);
1248                 g_free(utf8entry);
1249                 g_free(utf8name);
1250         }
1251
1252         g_dir_close(dir);
1253         g_free(path);
1254
1255         mh_set_mtime(folder, item);
1256 }
1257
1258 static gboolean mh_rename_folder_func(GNode *node, gpointer data)
1259 {
1260         FolderItem *item = node->data;
1261         gchar **paths = data;
1262         const gchar *oldpath = paths[0];
1263         const gchar *newpath = paths[1];
1264         gchar *base;
1265         gchar *new_itempath;
1266         gint oldpathlen;
1267
1268         oldpathlen = strlen(oldpath);
1269         if (strncmp(oldpath, item->path, oldpathlen) != 0) {
1270                 g_warning("path doesn't match: %s, %s", oldpath, item->path);
1271                 return TRUE;
1272         }
1273
1274         base = item->path + oldpathlen;
1275         while (*base == G_DIR_SEPARATOR) base++;
1276         if (*base == '\0')
1277                 new_itempath = g_strdup(newpath);
1278         else
1279                 new_itempath = g_strconcat(newpath, G_DIR_SEPARATOR_S, base,
1280                                            NULL);
1281         g_free(item->path);
1282         item->path = new_itempath;
1283
1284         return FALSE;
1285 }
1286
1287 static gchar *mh_filename_from_utf8(const gchar *path)
1288 {
1289         gchar *real_path = g_filename_from_utf8(path, -1, NULL, NULL, NULL);
1290
1291         if (!real_path) {
1292                 g_warning("mh_filename_from_utf8: failed to convert character set");
1293                 real_path = g_strdup(path);
1294         }
1295
1296         return real_path;
1297 }
1298
1299 static gchar *mh_filename_to_utf8(const gchar *path)
1300 {
1301         gchar *utf8path = g_filename_to_utf8(path, -1, NULL, NULL, NULL);
1302         if (!utf8path) {
1303                 g_warning("mh_filename_to_utf8: failed to convert character set");
1304                 utf8path = g_strdup(path);
1305         }
1306
1307         return utf8path;
1308 }
1309
1310 static gint sort_cache_list_by_msgnum(gconstpointer a, gconstpointer b)
1311 {
1312         MsgInfo *msginfo_a = (MsgInfo *) a;
1313         MsgInfo *msginfo_b = (MsgInfo *) b;
1314
1315         return (msginfo_a->msgnum - msginfo_b->msgnum);
1316 }
1317
1318 static gchar *get_unseen_seq_name(void)
1319 {
1320         static gchar *seq_name = NULL;
1321         if (!seq_name) {
1322                 gchar buf[BUFFSIZE];
1323                 gchar *tmp;
1324                 gchar *profile_path = g_strconcat(
1325                         get_home_dir(), G_DIR_SEPARATOR_S,
1326                         ".mh_profile", NULL);
1327                 FILE *fp = claws_fopen(profile_path, "r");
1328                 if (fp) {
1329                         while (claws_fgets(buf, sizeof(buf), fp) != NULL) {
1330                                 if (!strncmp(buf, "Unseen-Sequence:", strlen("Unseen-Sequence:"))) {
1331                                         gchar *seq_tmp = buf+strlen("Unseen-Sequence:");
1332                                         while (*seq_tmp == ' ')
1333                                                 seq_tmp++;
1334                                         seq_name = g_strdup(seq_tmp);
1335                                         seq_name = strretchomp(seq_name);
1336                                         break;
1337                                 }
1338                         }
1339                         claws_fclose(fp);
1340                 }
1341                 if (!seq_name)
1342                         seq_name = g_strdup("unseen");
1343                 tmp = g_strdup_printf("%s:", seq_name);
1344                 g_free(seq_name);
1345                 seq_name = tmp;
1346         }
1347         return seq_name;
1348 }
1349
1350 static void mh_write_sequences(FolderItem *item, gboolean remove_unseen)
1351 {
1352         gchar *mh_sequences_old, *mh_sequences_new;
1353         FILE *mh_sequences_old_fp, *mh_sequences_new_fp;
1354         gchar buf[BUFFSIZE];
1355         gchar *path = NULL;
1356         gboolean err = FALSE;
1357         START_TIMING("");
1358
1359         if (!item)
1360                 return;
1361
1362         path = folder_item_get_path(item);
1363
1364         mh_sequences_old = g_strconcat(path, G_DIR_SEPARATOR_S,
1365                                             ".mh_sequences", NULL);
1366         mh_sequences_new = g_strconcat(path, G_DIR_SEPARATOR_S,
1367                                             ".mh_sequences.new", NULL);
1368         if ((mh_sequences_new_fp = claws_fopen(mh_sequences_new, "w+b")) != NULL) {
1369                 GSList *msglist = folder_item_get_msg_list(item);
1370                 GSList *cur;
1371                 MsgInfo *info = NULL;
1372                 gint start = -1, end = -1;
1373                 gchar *sequence = g_strdup("");
1374                 gint seq_len = 0;
1375                 msglist = g_slist_sort(msglist, sort_cache_list_by_msgnum);
1376                 cur = msglist;
1377
1378                 /* write the unseen sequence if we don't have to scrap it */
1379                 if (!remove_unseen) do {
1380                         info = (MsgInfo *)(cur ? cur->data:NULL);
1381                         if (info && (MSG_IS_UNREAD(info->flags) || MSG_IS_NEW(info->flags))) {
1382                                 if (start < 0)
1383                                         start = end = info->msgnum;
1384                                 else
1385                                         end = info->msgnum;
1386                         } else {
1387                                 if (start > 0 && end > 0) {
1388                                         gchar tmp[32];
1389                                         gint tmp_len = 0;
1390                                         if (start != end)
1391                                                 snprintf(tmp, 31, " %d-%d", start, end);
1392                                         else
1393                                                 snprintf(tmp, 31, " %d", start);
1394
1395                                         tmp_len = strlen(tmp);
1396                                         sequence = g_realloc(sequence, seq_len+tmp_len+1);
1397                                         strcpy(sequence+seq_len, tmp);
1398                                         seq_len += tmp_len;
1399
1400                                         start = end = -1;
1401                                 }
1402                         }
1403                         cur = cur ? cur->next:NULL;
1404                 } while (cur || (start > 0 && end > 0));
1405                 if (sequence && *sequence) {
1406                         if (fprintf(mh_sequences_new_fp, "%s%s\n",
1407                                         get_unseen_seq_name(), sequence) < 0)
1408                                 err = TRUE;
1409                         else
1410                                 debug_print("wrote unseen sequence: '%s%s'\n",
1411                                         get_unseen_seq_name(), sequence);
1412                 }
1413                 /* rewrite the rest of the file */
1414                 if ((mh_sequences_old_fp = claws_fopen(mh_sequences_old, "r+b")) != NULL) {
1415                         while (claws_fgets(buf, sizeof(buf), mh_sequences_old_fp) != NULL) {
1416                                 if (strncmp(buf, get_unseen_seq_name(), strlen(get_unseen_seq_name())))
1417                                         if (fprintf(mh_sequences_new_fp, "%s", buf) < 0) {
1418                                                 err = TRUE;
1419                                                 break;
1420                                         }
1421                         }
1422                         claws_fclose(mh_sequences_old_fp);
1423                 }
1424
1425                 if (claws_safe_fclose(mh_sequences_new_fp) == EOF)
1426                         err = TRUE;
1427
1428                 if (!err) {
1429                         if (g_rename(mh_sequences_new, mh_sequences_old) < 0)
1430                                 FILE_OP_ERROR(mh_sequences_new, "rename");
1431                 }
1432                 g_free(sequence);
1433                 procmsg_msg_list_free(msglist);
1434         }
1435         g_free(mh_sequences_old);
1436         g_free(mh_sequences_new);
1437         g_free(path);
1438
1439         END_TIMING();
1440 }
1441
1442 static int mh_item_close(Folder *folder, FolderItem *item)
1443 {
1444         time_t last_mtime = (time_t)0;
1445         gboolean need_scan = mh_scan_required(item->folder, item);
1446         last_mtime = item->mtime;
1447
1448         mh_write_sequences(item, FALSE);
1449
1450         if (item->mtime == last_mtime && !need_scan) {
1451                 mh_set_mtime(folder, item);
1452         }
1453
1454         return 0;
1455 }
1456
1457 static void mh_set_mtime(Folder *folder, FolderItem *item)
1458 {
1459         GStatBuf s;
1460         gchar *path = folder_item_get_path(item);
1461
1462         cm_return_if_fail(path != NULL);
1463
1464         if (g_stat(path, &s) < 0) {
1465                 FILE_OP_ERROR(path, "stat");
1466                 g_free(path);
1467                 return;
1468         }
1469
1470         item->mtime = s.st_mtime;
1471         debug_print("MH: forced mtime of %s to %"G_GSIZE_FORMAT"\n", item->name?item->name:"(null)", item->mtime);
1472         g_free(path);
1473 }