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                         if (rootpath) \
 813                                 g_free(rootpath); \
 814                         if (path) \
 815                                 g_free(path); \
 816                         return -1; \
 817                 } \
 818                 if (make_dir_hier(dir) < 0) { \
 819                         if (rootpath) \
 820                                 g_free(rootpath); \
 821                         if (path) \
 822                                 g_free(path); \
 823                         return -1; \
 824                 } \
 825                 debug_print("Created dir '%s'\n", dir); \
 826         } \
 827 }
 828
 829 static gint mh_create_tree(Folder *folder)
 830 {
 831         gchar *rootpath, *f, *path = NULL;
 832
 833         cm_return_val_if_fail(folder != NULL, -1);
 834
 835         rootpath = LOCAL_FOLDER(folder)->rootpath;
 836 #ifdef G_OS_UNIX
 837         if (*rootpath == '/') {
 838 #elif defined G_OS_WIN32
 839         if (g_ascii_isalpha(*rootpath) && !strncmp(rootpath + 1, ":\\", 2)) {
 840 #endif
 841                 /* Folder path is absolute. */
 842                 rootpath = g_strdup(rootpath);
 843         } else {
 844                 /* Folder path is relative, using mail base dir. */
 845                 rootpath = g_strconcat(get_mail_base_dir(), G_DIR_SEPARATOR_S,
 846                                 rootpath, NULL);
 847         }
 848
 849         MAKE_DIR_IF_NOT_EXIST(rootpath);
 850
 851         /* Create special directories as needed */
 852         if (folder->inbox != NULL &&
 853                         folder->inbox->path != NULL)
 854                 f = folder->inbox->path;
 855         else
 856                 f = INBOX_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->outbox != NULL &&
 862                         folder->outbox->path != NULL)
 863                 f = folder->outbox->path;
 864         else
 865                 f = OUTBOX_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->draft != NULL &&
 871                         folder->draft->path != NULL)
 872                 f = folder->draft->path;
 873         else
 874                 f = DRAFT_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->queue != NULL &&
 880                         folder->queue->path != NULL)
 881                 f = folder->queue->path;
 882         else
 883                 f = QUEUE_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         if (folder->trash != NULL &&
 889                         folder->trash->path != NULL)
 890                 f = folder->trash->path;
 891         else
 892                 f = TRASH_DIR;
 893         path = g_strconcat(rootpath, G_DIR_SEPARATOR_S, f, NULL);
 894         MAKE_DIR_IF_NOT_EXIST(path);
 895         g_free(path);
 896
 897         g_free(rootpath);
 898         return 0;
 899 }
 900
 901 #undef MAKE_DIR_IF_NOT_EXIST
 902
 903 static gchar *mh_item_get_path(Folder *folder, FolderItem *item)
 904 {
 905         gchar *folder_path, *path;
 906         gchar *real_path;
 907         cm_return_val_if_fail(folder != NULL, NULL);
 908         cm_return_val_if_fail(item != NULL, NULL);
 909
 910         folder_path = g_strdup(LOCAL_FOLDER(folder)->rootpath);
 911         cm_return_val_if_fail(folder_path != NULL, NULL);
 912
 913         /* FIXME: [W32] The code below does not correctly merge
 914            relative filenames; there should be a function to handle
 915            this.  */
 916         if ( !is_relative_filename (folder_path) ) {
 917                 if (item->path)
 918                         path = g_strconcat(folder_path, G_DIR_SEPARATOR_S,
 919                                            item->path, NULL);
 920                 else
 921                         path = g_strdup(folder_path);
 922         } else {
 923                 if (item->path)
 924                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 925                                            folder_path, G_DIR_SEPARATOR_S,
 926                                            item->path, NULL);
 927                 else
 928                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 929                                            folder_path, NULL);
 930         }
 931         g_free(folder_path);
 932         real_path = mh_filename_from_utf8(path);
 933         if (!is_dir_exist(real_path) && is_dir_exist(path)) {
 934                 /* mmh, older version did put utf8 filenames instead of
 935                  * the correct encoding */
 936                 if (g_rename(path, real_path) == 0)
 937                         folder_item_scan(item);
 938         }
 939
 940         g_free(path);
 941         return real_path;
 942 }
 943
 944 static gboolean mh_renumber_msg(MsgInfo *info)
 945 {
 946         gchar *src, *dest;
 947         gboolean result = FALSE;
 948         guint num;
 949         cm_return_val_if_fail(info != NULL, FALSE);
 950
 951         src = folder_item_fetch_msg(info->folder, info->msgnum);
 952         dest = mh_get_new_msg_filename(info->folder);
 953         num = info->folder->last_num + 1;
 954
 955         if (move_file(src, dest, FALSE) == 0) {
 956                 msgcache_remove_msg(info->folder->cache, info->msgnum);
 957                 info->msgnum = num;
 958                 msgcache_add_msg(info->folder->cache, info);
 959                 result = TRUE;
 960         }
 961
 962         g_free(src);
 963         g_free(dest);
 964
 965         return result;
 966 }
 967
 968 static FolderItem *mh_create_folder(Folder *folder, FolderItem *parent,
 969                                     const gchar *name)
 970 {
 971         gchar *path, *real_name;
 972         gchar *fullpath;
 973         FolderItem *new_item;
 974         gchar *mh_sequences_filename;
 975         FILE *mh_sequences_file;
 976
 977         cm_return_val_if_fail(folder != NULL, NULL);
 978         cm_return_val_if_fail(parent != NULL, NULL);
 979         cm_return_val_if_fail(name != NULL, NULL);
 980
 981         path = folder_item_get_path(parent);
 982         if (!is_dir_exist(path))
 983                 if (make_dir_hier(path) != 0)
 984                         return NULL;
 985
 986         real_name = mh_filename_from_utf8(name);
 987         fullpath = g_strconcat(path, G_DIR_SEPARATOR_S, real_name, NULL);
 988         g_free(real_name);
 989         g_free(path);
 990
 991         if (to_number(name) > 0) {
 992                 MsgInfo *info = folder_item_get_msginfo(parent, to_number(name));
 993                 if (info != NULL) {
 994                         gboolean ok = mh_renumber_msg(info);
 995                         procmsg_msginfo_free(&info);
 996                         if (!ok) {
 997                                 g_free(fullpath);
 998                                 return NULL;
 999                         }
1000                 }
1001         }
1002
1003         if (make_dir(fullpath) < 0) {
1004                 g_free(fullpath);
1005                 return NULL;
1006         }
1007
1008         g_free(fullpath);
1009
1010         if (parent->path)
1011                 path = g_strconcat(parent->path, G_DIR_SEPARATOR_S, name,
1012                                    NULL);
1013         else
1014                 path = g_strdup(name);
1015         new_item = folder_item_new(folder, name, path);
1016         folder_item_append(parent, new_item);
1017
1018         g_free(path);
1019
1020         path = folder_item_get_path(new_item);
1021         mh_sequences_filename = g_strconcat(path, G_DIR_SEPARATOR_S,
1022                                             ".mh_sequences", NULL);
1023         if ((mh_sequences_file = claws_fopen(mh_sequences_filename, "a+b")) != NULL) {
1024                 claws_fclose(mh_sequences_file);
1025         }
1026         g_free(mh_sequences_filename);
1027         g_free(path);
1028
1029         return new_item;
1030 }
1031
1032 static gint mh_rename_folder(Folder *folder, FolderItem *item,
1033                              const gchar *name)
1034 {
1035         gchar *real_name;
1036         gchar *oldpath;
1037         gchar *dirname;
1038         gchar *newpath, *utf8newpath;
1039         gchar *paths[2];
1040
1041         cm_return_val_if_fail(folder != NULL, -1);
1042         cm_return_val_if_fail(item != NULL, -1);
1043         cm_return_val_if_fail(item->path != NULL, -1);
1044         cm_return_val_if_fail(name != NULL, -1);
1045
1046         oldpath = folder_item_get_path(item);
1047         if (!is_dir_exist(oldpath))
1048                 make_dir_hier(oldpath);
1049
1050         dirname = g_path_get_dirname(oldpath);
1051         real_name = mh_filename_from_utf8(name);
1052         newpath = g_strconcat(dirname, G_DIR_SEPARATOR_S, real_name, NULL);
1053         g_free(real_name);
1054         g_free(dirname);
1055
1056         if (g_rename(oldpath, newpath) < 0) {
1057                 FILE_OP_ERROR(oldpath, "rename");
1058                 g_free(oldpath);
1059                 g_free(newpath);
1060                 return -1;
1061         }
1062
1063         g_free(oldpath);
1064         g_free(newpath);
1065
1066         if (strchr(item->path, G_DIR_SEPARATOR) != NULL) {
1067                 dirname = g_path_get_dirname(item->path);
1068                 utf8newpath = g_strconcat(dirname, G_DIR_SEPARATOR_S,
1069                                           name, NULL);
1070                 g_free(dirname);
1071         } else
1072                 utf8newpath = g_strdup(name);
1073
1074         g_free(item->name);
1075         item->name = g_strdup(name);
1076
1077         paths[0] = g_strdup(item->path);
1078         paths[1] = utf8newpath;
1079         g_node_traverse(item->node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
1080                         mh_rename_folder_func, paths);
1081
1082         g_free(paths[0]);
1083         g_free(paths[1]);
1084         return 0;
1085 }
1086
1087 static gint mh_remove_folder(Folder *folder, FolderItem *item)
1088 {
1089         gchar *path;
1090         gint ret;
1091
1092         cm_return_val_if_fail(folder != NULL, -1);
1093         cm_return_val_if_fail(item != NULL, -1);
1094         cm_return_val_if_fail(item->path != NULL, -1);
1095
1096         path = folder_item_get_path(item);
1097         if ((ret = remove_dir_recursive(path)) < 0) {
1098                 g_warning("can't remove directory '%s'", path);
1099                 g_free(path);
1100                 return ret;
1101         }
1102
1103         g_free(path);
1104         folder_item_remove(item);
1105         return 0;
1106 }
1107
1108 static MsgInfo *mh_parse_msg(const gchar *file, FolderItem *item)
1109 {
1110         MsgInfo *msginfo;
1111         MsgFlags flags;
1112
1113         cm_return_val_if_fail(item != NULL, NULL);
1114         cm_return_val_if_fail(file != NULL, NULL);
1115
1116         flags.perm_flags = MSG_NEW|MSG_UNREAD;
1117         flags.tmp_flags = 0;
1118
1119         if (folder_has_parent_of_type(item, F_QUEUE)) {
1120                 MSG_SET_TMP_FLAGS(flags, MSG_QUEUED);
1121         } else if (folder_has_parent_of_type(item, F_DRAFT)) {
1122                 MSG_SET_TMP_FLAGS(flags, MSG_DRAFT);
1123         }
1124
1125         msginfo = procheader_parse_file(file, flags, FALSE, FALSE);
1126         if (!msginfo) return NULL;
1127
1128         msginfo->msgnum = atoi(file);
1129         msginfo->folder = item;
1130
1131         return msginfo;
1132 }
1133
1134 static gboolean mh_remove_missing_folder_items_func(GNode *node, gpointer data)
1135 {
1136         FolderItem *item;
1137         gchar *path;
1138
1139         cm_return_val_if_fail(node->data != NULL, FALSE);
1140
1141         if (G_NODE_IS_ROOT(node))
1142                 return FALSE;
1143
1144         item = FOLDER_ITEM(node->data);
1145
1146         path = folder_item_get_path(item);
1147         if (!is_dir_exist(path)) {
1148                 debug_print("folder '%s' not found. removing...\n", path?path:"(null)");
1149                 folder_item_remove(item);
1150         }
1151         g_free(path);
1152
1153         return FALSE;
1154 }
1155
1156 static void mh_remove_missing_folder_items(Folder *folder)
1157 {
1158         cm_return_if_fail(folder != NULL);
1159
1160         debug_print("searching missing folders...\n");
1161
1162         g_node_traverse(folder->node, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1163                         mh_remove_missing_folder_items_func, folder);
1164 }
1165
1166 static void mh_scan_tree_recursive(FolderItem *item)
1167 {
1168         Folder *folder;
1169         GDir *dir;
1170         const gchar *dir_name;
1171         gchar *entry, *utf8entry, *utf8name, *path;
1172         gint n_msg = 0;
1173         GError *error = NULL;
1174
1175         cm_return_if_fail(item != NULL);
1176         cm_return_if_fail(item->folder != NULL);
1177
1178         folder = item->folder;
1179
1180         path = folder_item_get_path(item);
1181         debug_print("mh_scan_tree_recursive() opening '%s'\n", path);
1182         dir = g_dir_open(path, 0, &error);
1183         if (!dir) {
1184                 g_warning("failed to open directory '%s': %s (%d)",
1185                                 path, error->message, error->code);
1186                 g_error_free(error);
1187                 g_free(path);
1188                 return;
1189         }
1190
1191         debug_print("scanning %s ...\n",
1192                     item->path ? item->path
1193                     : LOCAL_FOLDER(item->folder)->rootpath);
1194         if (folder->ui_func)
1195                 folder->ui_func(folder, item, folder->ui_func_data);
1196
1197         while ((dir_name = g_dir_read_name(dir)) != NULL) {
1198                 if (dir_name[0] == '.') continue;
1199
1200                 entry = g_strconcat(path, G_DIR_SEPARATOR_S, dir_name, NULL);
1201
1202                 utf8name = mh_filename_to_utf8(dir_name);
1203                 if (item->path)
1204                         utf8entry = g_strconcat(item->path, G_DIR_SEPARATOR_S,
1205                                                 utf8name, NULL);
1206                 else
1207                         utf8entry = g_strdup(utf8name);
1208
1209                 if (g_file_test(entry, G_FILE_TEST_IS_DIR)) {
1210                         FolderItem *new_item = NULL;
1211                         GNode *node;
1212
1213                         node = item->node;
1214                         for (node = node->children; node != NULL; node = node->next) {
1215                                 FolderItem *cur_item = FOLDER_ITEM(node->data);
1216                                 gchar *curpath = folder_item_get_path(cur_item);
1217                                 if (!g_strcmp0(curpath, entry)) {
1218                                         new_item = cur_item;
1219                                         g_free(curpath);
1220                                         break;
1221                                 }
1222                                 g_free(curpath);
1223                         }
1224                         if (!new_item) {
1225                                 debug_print("new folder '%s' found.\n", entry);
1226                                 new_item = folder_item_new(folder, utf8name, utf8entry);
1227                                 folder_item_append(item, new_item);
1228                         }
1229
1230                         if (!item->path) {
1231                                 if (!folder->inbox &&
1232                                     !strcmp(dir_name, INBOX_DIR)) {
1233                                         new_item->stype = F_INBOX;
1234                                         folder->inbox = new_item;
1235                                 } else if (!folder->outbox &&
1236                                            !strcmp(dir_name, OUTBOX_DIR)) {
1237                                         new_item->stype = F_OUTBOX;
1238                                         folder->outbox = new_item;
1239                                 } else if (!folder->draft &&
1240                                            !strcmp(dir_name, DRAFT_DIR)) {
1241                                         new_item->stype = F_DRAFT;
1242                                         folder->draft = new_item;
1243                                 } else if (!folder->queue &&
1244                                            !strcmp(dir_name, QUEUE_DIR)) {
1245                                         new_item->stype = F_QUEUE;
1246                                         folder->queue = new_item;
1247                                 } else if (!folder->trash &&
1248                                            !strcmp(dir_name, TRASH_DIR)) {
1249                                         new_item->stype = F_TRASH;
1250                                         folder->trash = new_item;
1251                                 }
1252                         }
1253
1254                         mh_scan_tree_recursive(new_item);
1255                 } else if (to_number(dir_name) > 0) n_msg++;
1256
1257                 g_free(entry);
1258                 g_free(utf8entry);
1259                 g_free(utf8name);
1260         }
1261
1262         g_dir_close(dir);
1263         g_free(path);
1264
1265         mh_set_mtime(folder, item);
1266 }
1267
1268 static gboolean mh_rename_folder_func(GNode *node, gpointer data)
1269 {
1270         FolderItem *item = node->data;
1271         gchar **paths = data;
1272         const gchar *oldpath = paths[0];
1273         const gchar *newpath = paths[1];
1274         gchar *base;
1275         gchar *new_itempath;
1276         gint oldpathlen;
1277
1278         oldpathlen = strlen(oldpath);
1279         if (strncmp(oldpath, item->path, oldpathlen) != 0) {
1280                 g_warning("path doesn't match: %s, %s", oldpath, item->path);
1281                 return TRUE;
1282         }
1283
1284         base = item->path + oldpathlen;
1285         while (*base == G_DIR_SEPARATOR) base++;
1286         if (*base == '\0')
1287                 new_itempath = g_strdup(newpath);
1288         else
1289                 new_itempath = g_strconcat(newpath, G_DIR_SEPARATOR_S, base,
1290                                            NULL);
1291         g_free(item->path);
1292         item->path = new_itempath;
1293
1294         return FALSE;
1295 }
1296
1297 static gchar *mh_filename_from_utf8(const gchar *path)
1298 {
1299         gchar *real_path = g_filename_from_utf8(path, -1, NULL, NULL, NULL);
1300
1301         if (!real_path) {
1302                 g_warning("mh_filename_from_utf8: failed to convert character set");
1303                 real_path = g_strdup(path);
1304         }
1305
1306         return real_path;
1307 }
1308
1309 static gchar *mh_filename_to_utf8(const gchar *path)
1310 {
1311         gchar *utf8path = g_filename_to_utf8(path, -1, NULL, NULL, NULL);
1312         if (!utf8path) {
1313                 g_warning("mh_filename_to_utf8: failed to convert character set");
1314                 utf8path = g_strdup(path);
1315         }
1316
1317         return utf8path;
1318 }
1319
1320 static gint sort_cache_list_by_msgnum(gconstpointer a, gconstpointer b)
1321 {
1322         MsgInfo *msginfo_a = (MsgInfo *) a;
1323         MsgInfo *msginfo_b = (MsgInfo *) b;
1324
1325         return (msginfo_a->msgnum - msginfo_b->msgnum);
1326 }
1327
1328 static gchar *get_unseen_seq_name(void)
1329 {
1330         static gchar *seq_name = NULL;
1331         if (!seq_name) {
1332                 gchar buf[BUFFSIZE];
1333                 gchar *tmp;
1334                 gchar *profile_path = g_strconcat(
1335                         get_home_dir(), G_DIR_SEPARATOR_S,
1336                         ".mh_profile", NULL);
1337                 FILE *fp = claws_fopen(profile_path, "r");
1338                 g_free(profile_path);
1339                 if (fp) {
1340                         while (claws_fgets(buf, sizeof(buf), fp) != NULL) {
1341                                 if (!strncmp(buf, "Unseen-Sequence:", strlen("Unseen-Sequence:"))) {
1342                                         gchar *seq_tmp = buf+strlen("Unseen-Sequence:");
1343                                         while (*seq_tmp == ' ')
1344                                                 seq_tmp++;
1345                                         seq_name = g_strdup(seq_tmp);
1346                                         seq_name = strretchomp(seq_name);
1347                                         break;
1348                                 }
1349                         }
1350                         claws_fclose(fp);
1351                 }
1352                 if (!seq_name)
1353                         seq_name = g_strdup("unseen");
1354                 tmp = g_strdup_printf("%s:", seq_name);
1355                 g_free(seq_name);
1356                 seq_name = tmp;
1357         }
1358         return seq_name;
1359 }
1360
1361 static void mh_write_sequences(FolderItem *item, gboolean remove_unseen)
1362 {
1363         gchar *mh_sequences_old, *mh_sequences_new;
1364         FILE *mh_sequences_old_fp, *mh_sequences_new_fp;
1365         gchar buf[BUFFSIZE];
1366         gchar *path = NULL;
1367         gboolean err = FALSE;
1368         START_TIMING("");
1369
1370         if (!item)
1371                 return;
1372
1373         path = folder_item_get_path(item);
1374
1375         mh_sequences_old = g_strconcat(path, G_DIR_SEPARATOR_S,
1376                                             ".mh_sequences", NULL);
1377         mh_sequences_new = g_strconcat(path, G_DIR_SEPARATOR_S,
1378                                             ".mh_sequences.new", NULL);
1379         if ((mh_sequences_new_fp = claws_fopen(mh_sequences_new, "w+b")) != NULL) {
1380                 GSList *msglist = folder_item_get_msg_list(item);
1381                 GSList *cur;
1382                 MsgInfo *info = NULL;
1383                 gint start = -1, end = -1;
1384                 gchar *sequence = g_strdup("");
1385                 gint seq_len = 0;
1386                 msglist = g_slist_sort(msglist, sort_cache_list_by_msgnum);
1387                 cur = msglist;
1388
1389                 /* write the unseen sequence if we don't have to scrap it */
1390                 if (!remove_unseen) do {
1391                         info = (MsgInfo *)(cur ? cur->data:NULL);
1392                         if (info && (MSG_IS_UNREAD(info->flags) || MSG_IS_NEW(info->flags))) {
1393                                 if (start < 0)
1394                                         start = end = info->msgnum;
1395                                 else
1396                                         end = info->msgnum;
1397                         } else {
1398                                 if (start > 0 && end > 0) {
1399                                         gchar tmp[32];
1400                                         gint tmp_len = 0;
1401                                         if (start != end)
1402                                                 snprintf(tmp, 31, " %d-%d", start, end);
1403                                         else
1404                                                 snprintf(tmp, 31, " %d", start);
1405
1406                                         tmp_len = strlen(tmp);
1407                                         sequence = g_realloc(sequence, seq_len+tmp_len+1);
1408                                         strcpy(sequence+seq_len, tmp);
1409                                         seq_len += tmp_len;
1410
1411                                         start = end = -1;
1412                                 }
1413                         }
1414                         cur = cur ? cur->next:NULL;
1415                 } while (cur || (start > 0 && end > 0));
1416                 if (sequence && *sequence) {
1417                         if (fprintf(mh_sequences_new_fp, "%s%s\n",
1418                                         get_unseen_seq_name(), sequence) < 0)
1419                                 err = TRUE;
1420                         else
1421                                 debug_print("wrote unseen sequence: '%s%s'\n",
1422                                         get_unseen_seq_name(), sequence);
1423                 }
1424                 /* rewrite the rest of the file */
1425                 if ((mh_sequences_old_fp = claws_fopen(mh_sequences_old, "r+b")) != NULL) {
1426                         while (claws_fgets(buf, sizeof(buf), mh_sequences_old_fp) != NULL) {
1427                                 if (strncmp(buf, get_unseen_seq_name(), strlen(get_unseen_seq_name())))
1428                                         if (fprintf(mh_sequences_new_fp, "%s", buf) < 0) {
1429                                                 err = TRUE;
1430                                                 break;
1431                                         }
1432                         }
1433                         claws_fclose(mh_sequences_old_fp);
1434                 }
1435
1436                 if (claws_safe_fclose(mh_sequences_new_fp) == EOF)
1437                         err = TRUE;
1438
1439                 if (!err) {
1440                         if (g_rename(mh_sequences_new, mh_sequences_old) < 0)
1441                                 FILE_OP_ERROR(mh_sequences_new, "rename");
1442                 }
1443                 g_free(sequence);
1444                 procmsg_msg_list_free(msglist);
1445         }
1446         g_free(mh_sequences_old);
1447         g_free(mh_sequences_new);
1448         g_free(path);
1449
1450         END_TIMING();
1451 }
1452
1453 static int mh_item_close(Folder *folder, FolderItem *item)
1454 {
1455         time_t last_mtime = (time_t)0;
1456         gboolean need_scan = mh_scan_required(item->folder, item);
1457         last_mtime = item->mtime;
1458
1459         mh_write_sequences(item, FALSE);
1460
1461         if (item->mtime == last_mtime && !need_scan) {
1462                 mh_set_mtime(folder, item);
1463         }
1464
1465         return 0;
1466 }
1467
1468 static void mh_set_mtime(Folder *folder, FolderItem *item)
1469 {
1470         GStatBuf s;
1471         gchar *path = folder_item_get_path(item);
1472
1473         cm_return_if_fail(path != NULL);
1474
1475         if (g_stat(path, &s) < 0) {
1476                 FILE_OP_ERROR(path, "stat");
1477                 g_free(path);
1478                 return;
1479         }
1480
1481         item->mtime = s.st_mtime;
1482         debug_print("MH: forced mtime of %s to %"CM_TIME_FORMAT"\n", item->name?item->name:"(null)", item->mtime);
1483         g_free(path);
1484 }