src/mh.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2006 Hiroyuki Yamamoto and the Sylpheed-Claws team
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #endif
  23
  24 #include "defs.h"
  25
  26 #include <glib.h>
  27 #include <glib/gi18n.h>
  28 #include <dirent.h>
  29 #include <sys/stat.h>
  30 #include <unistd.h>
  31 #include <string.h>
  32 #include <errno.h>
  33
  34 #undef MEASURE_TIME
  35
  36 #ifdef MEASURE_TIME
  37 #  include <sys/time.h>
  38 #endif
  39
  40 #include "folder.h"
  41 #include "mh.h"
  42 #include "procmsg.h"
  43 #include "procheader.h"
  44 #include "utils.h"
  45 #include "codeconv.h"
  46 #include "statusbar.h"
  47 #include "gtkutils.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                                          GRelation      *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                                          GRelation      *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                                          GRelation      *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 int mh_item_close                (Folder         *folder,
 136                                          FolderItem     *item);
 137 static gint mh_get_flags                (Folder *folder, FolderItem *item,
 138                                          MsgInfoList *msginfo_list, GRelation *msgflags);
 139 static void mh_write_sequences          (FolderItem     *item, gboolean remove_unseen);
 140
 141 static FolderClass mh_class;
 142
 143 FolderClass *mh_get_class(void)
 144 {
 145         if (mh_class.idstr == NULL) {
 146                 mh_class.type = F_MH;
 147                 mh_class.idstr = "mh";
 148                 mh_class.uistr = "MH";
 149
 150                 /* Folder functions */
 151                 mh_class.new_folder = mh_folder_new;
 152                 mh_class.destroy_folder = mh_folder_destroy;
 153                 mh_class.set_xml = folder_local_set_xml;
 154                 mh_class.get_xml = folder_local_get_xml;
 155                 mh_class.scan_tree = mh_scan_tree;
 156                 mh_class.create_tree = mh_create_tree;
 157
 158                 /* FolderItem functions */
 159                 mh_class.item_get_path = mh_item_get_path;
 160                 mh_class.create_folder = mh_create_folder;
 161                 mh_class.rename_folder = mh_rename_folder;
 162                 mh_class.remove_folder = mh_remove_folder;
 163                 mh_class.get_num_list = mh_get_num_list;
 164                 mh_class.scan_required = mh_scan_required;
 165                 mh_class.close = mh_item_close;
 166                 mh_class.get_flags = NULL; /*mh_get_flags */;
 167
 168                 /* Message functions */
 169                 mh_class.get_msginfo = mh_get_msginfo;
 170                 mh_class.fetch_msg = mh_fetch_msg;
 171                 mh_class.add_msg = mh_add_msg;
 172                 mh_class.add_msgs = mh_add_msgs;
 173                 mh_class.copy_msg = mh_copy_msg;
 174                 mh_class.copy_msgs = mh_copy_msgs;
 175                 mh_class.remove_msg = mh_remove_msg;
 176                 mh_class.remove_msgs = mh_remove_msgs;
 177                 mh_class.remove_all_msg = mh_remove_all_msg;
 178                 mh_class.is_msg_changed = mh_is_msg_changed;
 179         }
 180
 181         return &mh_class;
 182 }
 183
 184 static Folder *mh_folder_new(const gchar *name, const gchar *path)
 185 {
 186         Folder *folder;
 187
 188         folder = (Folder *)g_new0(MHFolder, 1);
 189         folder->klass = &mh_class;
 190         mh_folder_init(folder, name, path);
 191
 192         return folder;
 193 }
 194
 195 static void mh_folder_destroy(Folder *folder)
 196 {
 197         folder_local_folder_destroy(LOCAL_FOLDER(folder));
 198 }
 199
 200 static void mh_folder_init(Folder *folder, const gchar *name, const gchar *path)
 201 {
 202         folder_local_folder_init(folder, name, path);
 203
 204 }
 205
 206 gboolean mh_scan_required(Folder *folder, FolderItem *item)
 207 {
 208         gchar *path;
 209         struct stat s;
 210
 211         path = folder_item_get_path(item);
 212         g_return_val_if_fail(path != NULL, FALSE);
 213
 214         if (stat(path, &s) < 0) {
 215                 FILE_OP_ERROR(path, "stat");
 216                 g_free(path);
 217                 return FALSE;
 218         }
 219
 220         if ((s.st_mtime > item->mtime) &&
 221                 (s.st_mtime - 3600 != item->mtime)) {
 222                 debug_print("MH scan required, folder updated: %s (%ld > %ld)\n",
 223                             path,
 224                             (long int) s.st_mtime,
 225                             (long int) item->mtime);
 226                 g_free(path);
 227                 return TRUE;
 228         }
 229
 230         debug_print("MH scan not required: %s (%ld <= %ld)\n",
 231                     path,
 232                     (long int) s.st_mtime,
 233                     (long int) item->mtime);
 234         g_free(path);
 235         return FALSE;
 236 }
 237
 238 void mh_get_last_num(Folder *folder, FolderItem *item)
 239 {
 240         gchar *path;
 241         DIR *dp;
 242         struct dirent *d;
 243         gint max = 0;
 244         gint num;
 245
 246         g_return_if_fail(item != NULL);
 247
 248         debug_print("mh_get_last_num(): Scanning %s ...\n", item->path);
 249
 250         path = folder_item_get_path(item);
 251         g_return_if_fail(path != NULL);
 252         if (change_dir(path) < 0) {
 253                 g_free(path);
 254                 return;
 255         }
 256         g_free(path);
 257
 258         if ((dp = opendir(".")) == NULL) {
 259                 FILE_OP_ERROR(item->path, "opendir");
 260                 return;
 261         }
 262
 263         while ((d = readdir(dp)) != NULL) {
 264                 if ((num = to_number(d->d_name)) > 0 &&
 265                     dirent_is_regular_file(d)) {
 266                         if (max < num)
 267                                 max = num;
 268                 }
 269         }
 270         closedir(dp);
 271
 272         debug_print("Last number in dir %s = %d\n", item->path, max);
 273         item->last_num = max;
 274 }
 275
 276 gint mh_get_num_list(Folder *folder, FolderItem *item, GSList **list, gboolean *old_uids_valid)
 277 {
 278
 279         gchar *path;
 280         DIR *dp;
 281         struct dirent *d;
 282         gint num, nummsgs = 0;
 283
 284         g_return_val_if_fail(item != NULL, -1);
 285
 286         debug_print("mh_get_num_list(): Scanning %s ...\n", item->path);
 287
 288         *old_uids_valid = TRUE;
 289
 290         path = folder_item_get_path(item);
 291         g_return_val_if_fail(path != NULL, -1);
 292         if (change_dir(path) < 0) {
 293                 g_free(path);
 294                 return -1;
 295         }
 296         g_free(path);
 297
 298         if ((dp = opendir(".")) == NULL) {
 299                 FILE_OP_ERROR(item->path, "opendir");
 300                 return -1;
 301         }
 302
 303         while ((d = readdir(dp)) != NULL) {
 304                 if ((num = to_number(d->d_name)) > 0) {
 305                         *list = g_slist_prepend(*list, GINT_TO_POINTER(num));
 306                         nummsgs++;
 307                 }
 308         }
 309         closedir(dp);
 310
 311         item->mtime = time(NULL);
 312         return nummsgs;
 313 }
 314
 315 static gchar *mh_fetch_msg(Folder *folder, FolderItem *item, gint num)
 316 {
 317         gchar *path;
 318         gchar *file;
 319
 320         g_return_val_if_fail(item != NULL, NULL);
 321         g_return_val_if_fail(num > 0, NULL);
 322
 323         path = folder_item_get_path(item);
 324         file = g_strconcat(path, G_DIR_SEPARATOR_S, itos(num), NULL);
 325
 326         if (!is_file_exist(file)) {
 327                 g_free(file);
 328                 g_free(path);
 329                 return NULL;
 330         }
 331         g_free(path);
 332         return file;
 333 }
 334
 335 static MsgInfo *mh_get_msginfo(Folder *folder, FolderItem *item, gint num)
 336 {
 337         MsgInfo *msginfo;
 338         gchar *file;
 339
 340         g_return_val_if_fail(item != NULL, NULL);
 341         if (num <= 0)
 342                 return NULL;
 343
 344         file = mh_fetch_msg(folder, item, num);
 345         if (!file) return NULL;
 346
 347         msginfo = mh_parse_msg(file, item);
 348         if (msginfo)
 349                 msginfo->msgnum = num;
 350
 351         g_free(file);
 352
 353         return msginfo;
 354 }
 355
 356 static gchar *mh_get_new_msg_filename(FolderItem *dest)
 357 {
 358         gchar *destfile;
 359         gchar *destpath;
 360
 361         destpath = folder_item_get_path(dest);
 362         g_return_val_if_fail(destpath != NULL, NULL);
 363
 364         if (!is_dir_exist(destpath))
 365                 make_dir_hier(destpath);
 366
 367         for (;;) {
 368                 destfile = g_strdup_printf("%s%c%d", destpath, G_DIR_SEPARATOR,
 369                                            dest->last_num + 1);
 370                 if (is_file_entry_exist(destfile)) {
 371                         dest->last_num++;
 372                         g_free(destfile);
 373                 } else
 374                         break;
 375         }
 376
 377         g_free(destpath);
 378
 379         return destfile;
 380 }
 381
 382 static gint mh_add_msg(Folder *folder, FolderItem *dest, const gchar *file, MsgFlags *flags)
 383 {
 384         gint ret;
 385         GSList file_list;
 386         MsgFileInfo fileinfo;
 387
 388         g_return_val_if_fail(file != NULL, -1);
 389
 390         fileinfo.msginfo = NULL;
 391         fileinfo.file = (gchar *)file;
 392         fileinfo.flags = flags;
 393         file_list.data = &fileinfo;
 394         file_list.next = NULL;
 395
 396         ret = mh_add_msgs(folder, dest, &file_list, NULL);
 397         return ret;
 398 }
 399
 400 static gint mh_add_msgs(Folder *folder, FolderItem *dest, GSList *file_list,
 401                  GRelation *relation)
 402 {
 403         gchar *destfile;
 404         GSList *cur;
 405         MsgFileInfo *fileinfo;
 406
 407         g_return_val_if_fail(dest != NULL, -1);
 408         g_return_val_if_fail(file_list != NULL, -1);
 409
 410         if (dest->last_num < 0) {
 411                 mh_get_last_num(folder, dest);
 412                 if (dest->last_num < 0) return -1;
 413         }
 414
 415         for (cur = file_list; cur != NULL; cur = cur->next) {
 416                 fileinfo = (MsgFileInfo *)cur->data;
 417
 418                 destfile = mh_get_new_msg_filename(dest);
 419                 if (destfile == NULL) return -1;
 420
 421 #ifdef G_OS_UNIX
 422                 if (link(fileinfo->file, destfile) < 0) {
 423 #endif
 424                         if (copy_file(fileinfo->file, destfile, TRUE) < 0) {
 425                                 g_warning(_("can't copy message %s to %s\n"),
 426                                           fileinfo->file, destfile);
 427                                 g_free(destfile);
 428                                 return -1;
 429                         }
 430 #ifdef G_OS_UNIX
 431                 }
 432 #endif
 433
 434                 if (relation != NULL)
 435                         g_relation_insert(relation, fileinfo, GINT_TO_POINTER(dest->last_num + 1));
 436                 g_free(destfile);
 437                 dest->last_num++;
 438         }
 439         mh_write_sequences(dest, TRUE);
 440         return dest->last_num;
 441 }
 442
 443 static gint mh_copy_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
 444 {
 445         GSList msglist;
 446
 447         g_return_val_if_fail(msginfo != NULL, -1);
 448
 449         msglist.data = msginfo;
 450         msglist.next = NULL;
 451
 452         return mh_copy_msgs(folder, dest, &msglist, NULL);
 453 }
 454
 455 static gint mh_copy_msgs(Folder *folder, FolderItem *dest, MsgInfoList *msglist,
 456                          GRelation *relation)
 457 {
 458         gboolean dest_need_scan = FALSE;
 459         gchar *srcfile;
 460         gchar *destfile;
 461         gint filemode = 0;
 462         FolderItemPrefs *prefs;
 463         MsgInfo *msginfo = NULL;
 464         gboolean remove_special_headers = FALSE;
 465         MsgInfoList *cur = NULL;
 466         gint curnum = 0, total = 0;
 467         gchar *srcpath = NULL;
 468         gboolean full_fetch = FALSE;
 469
 470         g_return_val_if_fail(dest != NULL, -1);
 471         g_return_val_if_fail(msglist != NULL, -1);
 472
 473         msginfo = (MsgInfo *)msglist->data;
 474
 475         g_return_val_if_fail(msginfo != NULL, -1);
 476
 477         if (msginfo->folder == dest) {
 478                 g_warning("the src folder is identical to the dest.\n");
 479                 return -1;
 480         }
 481
 482         if (msginfo->folder->folder != dest->folder)
 483                 full_fetch = TRUE;
 484
 485         if (dest->last_num < 0) {
 486                 mh_get_last_num(folder, dest);
 487                 if (dest->last_num < 0) return -1;
 488         }
 489
 490         if ((MSG_IS_QUEUED(msginfo->flags) || MSG_IS_DRAFT(msginfo->flags))
 491         && !folder_has_parent_of_type(dest, F_QUEUE)
 492         && !folder_has_parent_of_type(dest, F_DRAFT)) {
 493                 /* as every msginfo comes from the same folder, it is supposed they
 494                  * will either match the preceding condition either all or none.
 495                  */
 496                 remove_special_headers = TRUE;
 497         } else if (!(MSG_IS_QUEUED(msginfo->flags) || MSG_IS_DRAFT(msginfo->flags))
 498         && (folder_has_parent_of_type(dest, F_QUEUE)
 499          || folder_has_parent_of_type(dest, F_DRAFT))) {
 500                 return -1;
 501         }
 502
 503         prefs = dest->prefs;
 504
 505         srcpath = folder_item_get_path(msginfo->folder);
 506
 507         total = g_slist_length(msglist);
 508         if (total > 100) {
 509                 if (MSG_IS_MOVE(msginfo->flags))
 510                         statusbar_print_all(_("Moving messages..."));
 511                 else
 512                         statusbar_print_all(_("Copying messages..."));
 513         }
 514         for (cur = msglist; cur; cur = cur->next) {
 515                 gboolean moved = FALSE;
 516                 msginfo = (MsgInfo *)cur->data;
 517                 if (!msginfo) {
 518                         goto err_reset_status;
 519                 }
 520                 if (!full_fetch) {
 521                         srcfile = g_strconcat(srcpath,
 522                                 G_DIR_SEPARATOR_S,
 523                                 itos(msginfo->msgnum), NULL);
 524                 } else {
 525                         srcfile = procmsg_get_message_file(msginfo);
 526                 }
 527                 if (!srcfile) {
 528                         goto err_reset_status;
 529                 }
 530                 destfile = mh_get_new_msg_filename(dest);
 531                 if (!destfile) {
 532                         g_free(srcfile);
 533                         goto err_reset_status;
 534                 }
 535
 536                 if (total > 100) {
 537                         statusbar_progress_all(curnum, total, 100);
 538                         if (curnum % 100 == 0)
 539                                 GTK_EVENTS_FLUSH();
 540                         curnum++;
 541                 }
 542
 543                 debug_print("Copying message %s%c%d to %s ...\n",
 544                             msginfo->folder->path, G_DIR_SEPARATOR,
 545                             msginfo->msgnum, dest->path);
 546
 547
 548                 if (remove_special_headers) {
 549                         if (procmsg_remove_special_headers(srcfile, destfile) !=0) {
 550                                 g_free(srcfile);
 551                                 g_free(destfile);
 552                                 goto err_reset_status;
 553                         }
 554                 } else if (MSG_IS_MOVE(msginfo->flags)) {
 555                         if (move_file(srcfile, destfile, TRUE) < 0) {
 556                                 FILE_OP_ERROR(srcfile, "move");
 557                                 if (copy_file(srcfile, destfile, TRUE) < 0) {
 558                                         FILE_OP_ERROR(srcfile, "copy");
 559                                         g_free(srcfile);
 560                                         g_free(destfile);
 561                                         goto err_reset_status;
 562                                 }
 563                         }
 564                 } else if (copy_file(srcfile, destfile, TRUE) < 0) {
 565                         FILE_OP_ERROR(srcfile, "copy");
 566                         g_free(srcfile);
 567                         g_free(destfile);
 568                         goto err_reset_status;
 569                 }
 570                 if (prefs && prefs->enable_folder_chmod && prefs->folder_chmod) {
 571                         if (chmod(destfile, prefs->folder_chmod) < 0)
 572                                 FILE_OP_ERROR(destfile, "chmod");
 573
 574                         /* for mark file */
 575                         filemode = prefs->folder_chmod;
 576                         if (filemode & S_IRGRP) filemode |= S_IWGRP;
 577                         if (filemode & S_IROTH) filemode |= S_IWOTH;
 578                 }
 579                 if (relation)
 580                         g_relation_insert(relation, msginfo, GINT_TO_POINTER(dest->last_num+1));
 581                 g_free(srcfile);
 582                 g_free(destfile);
 583                 dest->last_num++;
 584         }
 585
 586         g_free(srcpath);
 587         mh_write_sequences(dest, TRUE);
 588
 589         dest_need_scan = mh_scan_required(dest->folder, dest);
 590         if (!dest_need_scan)
 591                 dest->mtime = time(NULL);
 592
 593         if (total > 100) {
 594                 statusbar_progress_all(0,0,0);
 595                 statusbar_pop_all();
 596         }
 597         return dest->last_num;
 598 err_reset_status:
 599         g_free(srcpath);
 600         mh_write_sequences(dest, TRUE);
 601         if (total > 100) {
 602                 statusbar_progress_all(0,0,0);
 603                 statusbar_pop_all();
 604         }
 605         return -1;
 606
 607 }
 608
 609 static gint mh_remove_msg(Folder *folder, FolderItem *item, gint num)
 610 {
 611         gboolean need_scan = FALSE;
 612         gchar *file;
 613
 614         g_return_val_if_fail(item != NULL, -1);
 615
 616         file = mh_fetch_msg(folder, item, num);
 617         g_return_val_if_fail(file != NULL, -1);
 618
 619         need_scan = mh_scan_required(folder, item);
 620
 621         if (g_unlink(file) < 0) {
 622                 FILE_OP_ERROR(file, "unlink");
 623                 g_free(file);
 624                 return -1;
 625         }
 626
 627         if (!need_scan)
 628                 item->mtime = time(NULL);
 629
 630         g_free(file);
 631         return 0;
 632 }
 633
 634 static gint mh_remove_msgs(Folder *folder, FolderItem *item,
 635                     MsgInfoList *msglist, GRelation *relation)
 636 {
 637         gboolean need_scan = FALSE;
 638         gchar *path, *file;
 639         MsgInfoList *cur;
 640
 641         g_return_val_if_fail(item != NULL, -1);
 642
 643         path = folder_item_get_path(item);
 644
 645         for (cur = msglist; cur; cur = cur->next) {
 646                 MsgInfo *msginfo = (MsgInfo *)cur->data;
 647                 if (msginfo == NULL)
 648                         continue;
 649                 file = g_strconcat(path, G_DIR_SEPARATOR_S, itos(msginfo->msgnum), NULL);
 650                 if (file == NULL)
 651                         continue;
 652
 653                 if (g_unlink(file) < 0) {
 654                         g_free(file);
 655                         continue;
 656                 }
 657
 658                 g_free(file);
 659         }
 660
 661         need_scan = mh_scan_required(folder, item);
 662
 663         if (!need_scan)
 664                 item->mtime = time(NULL);
 665
 666         g_free(path);
 667         return 0;
 668 }
 669
 670 static gint mh_remove_all_msg(Folder *folder, FolderItem *item)
 671 {
 672         gchar *path;
 673         gint val;
 674
 675         g_return_val_if_fail(item != NULL, -1);
 676
 677         path = folder_item_get_path(item);
 678         g_return_val_if_fail(path != NULL, -1);
 679         val = remove_all_numbered_files(path);
 680         g_free(path);
 681
 682         mh_write_sequences(item, TRUE);
 683
 684         return val;
 685 }
 686
 687 static gboolean mh_is_msg_changed(Folder *folder, FolderItem *item,
 688                                   MsgInfo *msginfo)
 689 {
 690         struct stat s;
 691
 692         if (g_stat(itos(msginfo->msgnum), &s) < 0 ||
 693             msginfo->size  != s.st_size || (
 694                 (msginfo->mtime - s.st_mtime != 0) &&
 695                 (msginfo->mtime - s.st_mtime != 3600) &&
 696                 (msginfo->mtime - s.st_mtime != -3600)))
 697                 return TRUE;
 698
 699         return FALSE;
 700 }
 701
 702 static gint mh_scan_tree(Folder *folder)
 703 {
 704         FolderItem *item;
 705         gchar *rootpath;
 706
 707         g_return_val_if_fail(folder != NULL, -1);
 708
 709         if (!folder->node) {
 710                 item = folder_item_new(folder, folder->name, NULL);
 711                 item->folder = folder;
 712                 folder->node = item->node = g_node_new(item);
 713         } else
 714                 item = FOLDER_ITEM(folder->node->data);
 715
 716         rootpath = folder_item_get_path(item);
 717         if (change_dir(rootpath) < 0) {
 718                 g_free(rootpath);
 719                 return -1;
 720         }
 721         g_free(rootpath);
 722
 723         mh_create_tree(folder);
 724         mh_remove_missing_folder_items(folder);
 725         mh_scan_tree_recursive(item);
 726
 727         return 0;
 728 }
 729
 730 #define MAKE_DIR_IF_NOT_EXIST(dir) \
 731 { \
 732         if (!is_dir_exist(dir)) { \
 733                 if (is_file_exist(dir)) { \
 734                         g_warning("File `%s' already exists.\n" \
 735                                     "Can't create folder.", dir); \
 736                         return -1; \
 737                 } \
 738                 if (make_dir(dir) < 0) \
 739                         return -1; \
 740         } \
 741 }
 742
 743 static gint mh_create_tree(Folder *folder)
 744 {
 745         gchar *rootpath;
 746
 747         g_return_val_if_fail(folder != NULL, -1);
 748
 749         CHDIR_RETURN_VAL_IF_FAIL(get_mail_base_dir(), -1);
 750         rootpath = LOCAL_FOLDER(folder)->rootpath;
 751         MAKE_DIR_IF_NOT_EXIST(rootpath);
 752         CHDIR_RETURN_VAL_IF_FAIL(rootpath, -1);
 753         MAKE_DIR_IF_NOT_EXIST(INBOX_DIR);
 754         MAKE_DIR_IF_NOT_EXIST(OUTBOX_DIR);
 755         MAKE_DIR_IF_NOT_EXIST(QUEUE_DIR);
 756         MAKE_DIR_IF_NOT_EXIST(DRAFT_DIR);
 757         MAKE_DIR_IF_NOT_EXIST(TRASH_DIR);
 758
 759         return 0;
 760 }
 761
 762 #undef MAKE_DIR_IF_NOT_EXIST
 763
 764 static gchar *mh_item_get_path(Folder *folder, FolderItem *item)
 765 {
 766         gchar *folder_path, *path;
 767         gchar *real_path;
 768         g_return_val_if_fail(folder != NULL, NULL);
 769         g_return_val_if_fail(item != NULL, NULL);
 770
 771         folder_path = g_strdup(LOCAL_FOLDER(folder)->rootpath);
 772         g_return_val_if_fail(folder_path != NULL, NULL);
 773
 774         /* FIXME: [W32] The code below does not correctly merge
 775            relative filenames; there should be a function to handle
 776            this.  */
 777         if ( !is_relative_filename (folder_path) ) {
 778                 if (item->path)
 779                         path = g_strconcat(folder_path, G_DIR_SEPARATOR_S,
 780                                            item->path, NULL);
 781                 else
 782                         path = g_strdup(folder_path);
 783         } else {
 784                 if (item->path)
 785                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 786                                            folder_path, G_DIR_SEPARATOR_S,
 787                                            item->path, NULL);
 788                 else
 789                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 790                                            folder_path, NULL);
 791         }
 792         g_free(folder_path);
 793         real_path = mh_filename_from_utf8(path);
 794         if (!is_dir_exist(real_path) && is_dir_exist(path)) {
 795                 /* mmh, older version did put utf8 filenames instead of
 796                  * the correct encoding */
 797                 rename(path, real_path);
 798                 folder_item_scan(item);
 799         }
 800
 801         g_free(path);
 802         return real_path;
 803 }
 804
 805 static FolderItem *mh_create_folder(Folder *folder, FolderItem *parent,
 806                                     const gchar *name)
 807 {
 808         gchar *path, *real_name;
 809         gchar *fullpath;
 810         FolderItem *new_item;
 811         gchar *mh_sequences_filename;
 812         FILE *mh_sequences_file;
 813
 814         g_return_val_if_fail(folder != NULL, NULL);
 815         g_return_val_if_fail(parent != NULL, NULL);
 816         g_return_val_if_fail(name != NULL, NULL);
 817
 818         path = folder_item_get_path(parent);
 819         if (!is_dir_exist(path))
 820                 if (make_dir_hier(path) != 0)
 821                         return NULL;
 822
 823         real_name = mh_filename_from_utf8(name);
 824         fullpath = g_strconcat(path, G_DIR_SEPARATOR_S, real_name, NULL);
 825         g_free(real_name);
 826         g_free(path);
 827
 828         if (make_dir(fullpath) < 0) {
 829                 g_free(fullpath);
 830                 return NULL;
 831         }
 832
 833         g_free(fullpath);
 834
 835         if (parent->path)
 836                 path = g_strconcat(parent->path, G_DIR_SEPARATOR_S, name,
 837                                    NULL);
 838         else
 839                 path = g_strdup(name);
 840         new_item = folder_item_new(folder, name, path);
 841         folder_item_append(parent, new_item);
 842
 843         g_free(path);
 844
 845         path = folder_item_get_path(new_item);
 846         mh_sequences_filename = g_strconcat(path, G_DIR_SEPARATOR_S,
 847                                             ".mh_sequences", NULL);
 848         if ((mh_sequences_file = g_fopen(mh_sequences_filename, "a+b")) != NULL) {
 849                 fclose(mh_sequences_file);
 850         }
 851         g_free(mh_sequences_filename);
 852         g_free(path);
 853
 854         return new_item;
 855 }
 856
 857 static gint mh_rename_folder(Folder *folder, FolderItem *item,
 858                              const gchar *name)
 859 {
 860         gchar *real_name;
 861         gchar *oldpath;
 862         gchar *dirname;
 863         gchar *newpath, *utf8newpath;
 864         gchar *paths[2];
 865
 866         g_return_val_if_fail(folder != NULL, -1);
 867         g_return_val_if_fail(item != NULL, -1);
 868         g_return_val_if_fail(item->path != NULL, -1);
 869         g_return_val_if_fail(name != NULL, -1);
 870
 871         oldpath = folder_item_get_path(item);
 872         if (!is_dir_exist(oldpath))
 873                 make_dir_hier(oldpath);
 874
 875         dirname = g_path_get_dirname(oldpath);
 876         real_name = mh_filename_from_utf8(name);
 877         newpath = g_strconcat(dirname, G_DIR_SEPARATOR_S, real_name, NULL);
 878         g_free(real_name);
 879
 880         if (g_rename(oldpath, newpath) < 0) {
 881                 FILE_OP_ERROR(oldpath, "rename");
 882                 g_free(oldpath);
 883                 g_free(newpath);
 884                 return -1;
 885         }
 886
 887         g_free(oldpath);
 888         g_free(newpath);
 889
 890         if (strchr(item->path, G_DIR_SEPARATOR) != NULL) {
 891                 dirname = g_path_get_dirname(item->path);
 892                 utf8newpath = g_strconcat(dirname, G_DIR_SEPARATOR_S,
 893                                           name, NULL);
 894                 g_free(dirname);
 895         } else
 896                 utf8newpath = g_strdup(name);
 897
 898         g_free(item->name);
 899         item->name = g_strdup(name);
 900
 901         paths[0] = g_strdup(item->path);
 902         paths[1] = utf8newpath;
 903         g_node_traverse(item->node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 904                         mh_rename_folder_func, paths);
 905
 906         g_free(paths[0]);
 907         g_free(paths[1]);
 908         return 0;
 909 }
 910
 911 static gint mh_remove_folder(Folder *folder, FolderItem *item)
 912 {
 913         gchar *path;
 914
 915         g_return_val_if_fail(folder != NULL, -1);
 916         g_return_val_if_fail(item != NULL, -1);
 917         g_return_val_if_fail(item->path != NULL, -1);
 918
 919         path = folder_item_get_path(item);
 920         if (remove_dir_recursive(path) < 0) {
 921                 g_warning("can't remove directory `%s'\n", path);
 922                 g_free(path);
 923                 return -1;
 924         }
 925
 926         g_free(path);
 927         folder_item_remove(item);
 928         return 0;
 929 }
 930
 931 static MsgInfo *mh_parse_msg(const gchar *file, FolderItem *item)
 932 {
 933         MsgInfo *msginfo;
 934         MsgFlags flags;
 935
 936         g_return_val_if_fail(item != NULL, NULL);
 937         g_return_val_if_fail(file != NULL, NULL);
 938
 939         flags.perm_flags = MSG_NEW|MSG_UNREAD;
 940         flags.tmp_flags = 0;
 941
 942         if (folder_has_parent_of_type(item, F_QUEUE)) {
 943                 MSG_SET_TMP_FLAGS(flags, MSG_QUEUED);
 944         } else if (folder_has_parent_of_type(item, F_DRAFT)) {
 945                 MSG_SET_TMP_FLAGS(flags, MSG_DRAFT);
 946         }
 947
 948         msginfo = procheader_parse_file(file, flags, FALSE, FALSE);
 949         if (!msginfo) return NULL;
 950
 951         msginfo->msgnum = atoi(file);
 952         msginfo->folder = item;
 953
 954         return msginfo;
 955 }
 956
 957 static gboolean mh_remove_missing_folder_items_func(GNode *node, gpointer data)
 958 {
 959         FolderItem *item;
 960         gchar *path;
 961
 962         g_return_val_if_fail(node->data != NULL, FALSE);
 963
 964         if (G_NODE_IS_ROOT(node))
 965                 return FALSE;
 966
 967         item = FOLDER_ITEM(node->data);
 968
 969         path = folder_item_get_path(item);
 970         if (!is_dir_exist(path)) {
 971                 debug_print("folder '%s' not found. removing...\n", path);
 972                 folder_item_remove(item);
 973         }
 974         g_free(path);
 975
 976         return FALSE;
 977 }
 978
 979 static void mh_remove_missing_folder_items(Folder *folder)
 980 {
 981         g_return_if_fail(folder != NULL);
 982
 983         debug_print("searching missing folders...\n");
 984
 985         g_node_traverse(folder->node, G_POST_ORDER, G_TRAVERSE_ALL, -1,
 986                         mh_remove_missing_folder_items_func, folder);
 987 }
 988
 989 static void mh_scan_tree_recursive(FolderItem *item)
 990 {
 991         Folder *folder;
 992 #ifdef G_OS_WIN32
 993         GDir *dir;
 994 #else
 995         DIR *dp;
 996         struct dirent *d;
 997 #endif
 998         const gchar *dir_name;
 999         struct stat s;
1000         gchar *real_path, *entry, *utf8entry, *utf8name;
1001         gint n_msg = 0;
1002
1003         g_return_if_fail(item != NULL);
1004         g_return_if_fail(item->folder != NULL);
1005
1006         folder = item->folder;
1007
1008         real_path = item->path ? mh_filename_from_utf8(item->path) : g_strdup(".");
1009 #ifdef G_OS_WIN32
1010         dir = g_dir_open(real_path, 0, NULL);
1011         if (!dir) {
1012                 g_warning("failed to open directory: %s\n", real_path);
1013                 g_free(real_path);
1014                 return;
1015         }
1016 #else
1017         dp = opendir(real_path);
1018         if (!dp) {
1019                 FILE_OP_ERROR(real_path, "opendir");
1020                 return;
1021         }
1022 #endif
1023         g_free(real_path);
1024
1025         debug_print("scanning %s ...\n",
1026                     item->path ? item->path
1027                     : LOCAL_FOLDER(item->folder)->rootpath);
1028         if (folder->ui_func)
1029                 folder->ui_func(folder, item, folder->ui_func_data);
1030
1031 #ifdef G_OS_WIN32
1032         while ((dir_name = g_dir_read_name(dir)) != NULL) {
1033 #else
1034         while ((d = readdir(dp)) != NULL) {
1035                 dir_name = d->d_name;
1036 #endif
1037                 if (dir_name[0] == '.') continue;
1038
1039                 utf8name = mh_filename_to_utf8(dir_name);
1040                 if (item->path)
1041                         utf8entry = g_strconcat(item->path, G_DIR_SEPARATOR_S,
1042                                                 utf8name, NULL);
1043                 else
1044                         utf8entry = g_strdup(utf8name);
1045                 entry = mh_filename_from_utf8(utf8entry);
1046
1047                 if (
1048 #if !defined(G_OS_WIN32) && defined(HAVE_DIRENT_D_TYPE)
1049                         d->d_type == DT_DIR ||
1050                         (d->d_type == DT_UNKNOWN &&
1051 #endif
1052                         g_stat(entry, &s) == 0 && S_ISDIR(s.st_mode)
1053 #if !defined(G_OS_WIN32) && defined(HAVE_DIRENT_D_TYPE)
1054                         )
1055 #endif
1056                    ) {
1057                         FolderItem *new_item = NULL;
1058                         GNode *node;
1059
1060                         node = item->node;
1061                         for (node = node->children; node != NULL; node = node->next) {
1062                                 FolderItem *cur_item = FOLDER_ITEM(node->data);
1063                                 if (!strcmp2(cur_item->path, entry)) {
1064                                         new_item = cur_item;
1065                                         break;
1066                                 }
1067                         }
1068                         if (!new_item) {
1069                                 debug_print("new folder '%s' found.\n", entry);
1070                                 new_item = folder_item_new(folder, utf8name, utf8entry);
1071                                 folder_item_append(item, new_item);
1072                         }
1073
1074                         if (!item->path) {
1075                                 if (!folder->inbox &&
1076                                     !strcmp(dir_name, INBOX_DIR)) {
1077                                         new_item->stype = F_INBOX;
1078                                         folder->inbox = new_item;
1079                                 } else if (!folder->outbox &&
1080                                            !strcmp(dir_name, OUTBOX_DIR)) {
1081                                         new_item->stype = F_OUTBOX;
1082                                         folder->outbox = new_item;
1083                                 } else if (!folder->draft &&
1084                                            !strcmp(dir_name, DRAFT_DIR)) {
1085                                         new_item->stype = F_DRAFT;
1086                                         folder->draft = new_item;
1087                                 } else if (!folder->queue &&
1088                                            !strcmp(dir_name, QUEUE_DIR)) {
1089                                         new_item->stype = F_QUEUE;
1090                                         folder->queue = new_item;
1091                                 } else if (!folder->trash &&
1092                                            !strcmp(dir_name, TRASH_DIR)) {
1093                                         new_item->stype = F_TRASH;
1094                                         folder->trash = new_item;
1095                                 }
1096                         }
1097
1098                         mh_scan_tree_recursive(new_item);
1099                 } else if (to_number(dir_name) > 0) n_msg++;
1100
1101                 g_free(entry);
1102                 g_free(utf8entry);
1103                 g_free(utf8name);
1104         }
1105
1106 #ifdef G_OS_WIN32
1107         g_dir_close(dir);
1108 #else
1109         closedir(dp);
1110 #endif
1111
1112         item->mtime = time(NULL);
1113 }
1114
1115 static gboolean mh_rename_folder_func(GNode *node, gpointer data)
1116 {
1117         FolderItem *item = node->data;
1118         gchar **paths = data;
1119         const gchar *oldpath = paths[0];
1120         const gchar *newpath = paths[1];
1121         gchar *base;
1122         gchar *new_itempath;
1123         gint oldpathlen;
1124
1125         oldpathlen = strlen(oldpath);
1126         if (strncmp(oldpath, item->path, oldpathlen) != 0) {
1127                 g_warning("path doesn't match: %s, %s\n", oldpath, item->path);
1128                 return TRUE;
1129         }
1130
1131         base = item->path + oldpathlen;
1132         while (*base == G_DIR_SEPARATOR) base++;
1133         if (*base == '\0')
1134                 new_itempath = g_strdup(newpath);
1135         else
1136                 new_itempath = g_strconcat(newpath, G_DIR_SEPARATOR_S, base,
1137                                            NULL);
1138         g_free(item->path);
1139         item->path = new_itempath;
1140
1141         return FALSE;
1142 }
1143
1144 static gchar *mh_filename_from_utf8(const gchar *path)
1145 {
1146         gchar *real_path = g_filename_from_utf8(path, -1, NULL, NULL, NULL);
1147
1148         if (!real_path) {
1149                 g_warning("mh_filename_from_utf8: faild to convert character set\n");
1150                 real_path = g_strdup(path);
1151         }
1152
1153         return real_path;
1154 }
1155
1156 static gchar *mh_filename_to_utf8(const gchar *path)
1157 {
1158         gchar *utf8path = g_filename_to_utf8(path, -1, NULL, NULL, NULL);
1159         if (!utf8path) {
1160                 g_warning("mh_filename_to_utf8: faild to convert character set\n");
1161                 utf8path = g_strdup(path);
1162         }
1163
1164         return utf8path;
1165 }
1166
1167 static gint sort_cache_list_by_msgnum(gconstpointer a, gconstpointer b)
1168 {
1169         MsgInfo *msginfo_a = (MsgInfo *) a;
1170         MsgInfo *msginfo_b = (MsgInfo *) b;
1171
1172         return (msginfo_a->msgnum - msginfo_b->msgnum);
1173 }
1174
1175 static gchar *get_unseen_seq_name(void)
1176 {
1177         static gchar *seq_name = NULL;
1178         if (!seq_name) {
1179                 gchar buf[BUFFSIZE];
1180                 gchar *tmp;
1181                 gchar *profile_path = g_strconcat(
1182                         g_get_home_dir(), G_DIR_SEPARATOR_S,
1183                         ".mh_profile", NULL);
1184                 FILE *fp = g_fopen(profile_path, "r");
1185                 if (fp) {
1186                         while (fgets(buf, sizeof(buf), fp) != NULL) {
1187                                 if (!strncmp(buf, "Unseen-Sequence:", strlen("Unseen-Sequence:"))) {
1188                                         gchar *seq_tmp = buf+strlen("Unseen-Sequence:");
1189                                         while (*seq_tmp == ' ')
1190                                                 seq_tmp++;
1191                                         seq_name = g_strdup(seq_tmp);
1192                                         seq_name = strretchomp(seq_name);
1193                                         break;
1194                                 }
1195                         }
1196                         fclose(fp);
1197                 }
1198                 if (!seq_name)
1199                         seq_name = g_strdup("unseen");
1200                 tmp = g_strdup_printf("%s:", seq_name);
1201                 g_free(seq_name);
1202                 seq_name = tmp;
1203         }
1204         return seq_name;
1205 }
1206
1207 static gint mh_get_flags(Folder *folder, FolderItem *item,
1208                            MsgInfoList *msginfo_list, GRelation *msgflags)
1209 {
1210         gchar *mh_sequences_filename;
1211         FILE *mh_sequences_file;
1212         gchar buf[BUFFSIZE];
1213         gchar *unseen_list = NULL;
1214         gchar *path;
1215         MsgInfoList *mcur = NULL;
1216 /*
1217         GTimer *timer = g_timer_new();
1218         g_timer_start(timer);
1219 */
1220         if (!item)
1221                 return 0;
1222
1223         /* don't update from .mh_sequences if the item's opened: mails may have
1224          * been marked read/unread and it's not yet written in the file. */
1225         if (item->opened)
1226                 return 0;
1227
1228         path = folder_item_get_path(item);
1229
1230         mh_sequences_filename = g_strconcat(path, G_DIR_SEPARATOR_S,
1231                                             ".mh_sequences", NULL);
1232         g_free(path);
1233         if ((mh_sequences_file = g_fopen(mh_sequences_filename, "r+b")) != NULL) {
1234                 while (fgets(buf, sizeof(buf), mh_sequences_file) != NULL) {
1235                         if (!strncmp(buf, get_unseen_seq_name(), strlen(get_unseen_seq_name()))) {
1236                                 unseen_list = g_strdup(buf+strlen(get_unseen_seq_name()));
1237                                 break;
1238                         }
1239                 }
1240                 fclose(mh_sequences_file);
1241         }
1242
1243         g_free(mh_sequences_filename);
1244
1245         if (unseen_list) {
1246                 gchar *cur = NULL;
1247                 gchar *token = NULL, *next = NULL, *boundary = NULL;
1248                 gint num = 0;
1249                 GHashTable *unseen_table = g_hash_table_new(g_direct_hash, g_direct_equal);
1250
1251                 cur = unseen_list = strretchomp(unseen_list);
1252                 debug_print("found unseen list in .mh_sequences: %s\n", unseen_list);
1253 next_token:
1254                 while (*cur && *cur == ' ')
1255                         cur++;
1256
1257                 if ((next = strchr(cur, ' ')) != NULL) {
1258                         token = cur;
1259                         cur = next+1;
1260                         *next = '\0';
1261                 } else {
1262                         token = cur;
1263                         cur = NULL;
1264                 }
1265
1266                 if ((boundary = strchr(token, '-')) != NULL) {
1267                         gchar *start, *end;
1268                         int i;
1269                         start = token;
1270                         end = boundary+1;
1271                         *boundary='\0';
1272                         for (i = atoi(start); i <= atoi(end); i++) {
1273                                 g_hash_table_insert(unseen_table, GINT_TO_POINTER(i), GINT_TO_POINTER(1));
1274                         }
1275                 } else if ((num = atoi(token)) > 0) {
1276                         g_hash_table_insert(unseen_table, GINT_TO_POINTER(num), GINT_TO_POINTER(1));
1277                 }
1278
1279                 if (cur)
1280                         goto next_token;
1281                 for (mcur = msginfo_list; mcur; mcur = mcur->next) {
1282                         MsgInfo *msginfo = (MsgInfo *)mcur->data;
1283                         MsgPermFlags flags = msginfo->flags.perm_flags;
1284                         if (g_hash_table_lookup(unseen_table, GINT_TO_POINTER(msginfo->msgnum))) {
1285                                 flags |= MSG_UNREAD;
1286                         } else if (!(flags & MSG_NEW)) { /* don't mark new msgs as read */
1287                                 flags &= ~(MSG_UNREAD);
1288                         }
1289                         if (flags != msginfo->flags.perm_flags)
1290                                 g_relation_insert(msgflags, msginfo, GINT_TO_POINTER(flags));
1291                 }
1292                 g_hash_table_destroy(unseen_table);
1293                 g_free(unseen_list);
1294         }
1295 /*
1296         g_timer_stop(timer);
1297         printf("mh_get_flags: %f secs\n", g_timer_elapsed(timer, NULL));
1298         g_timer_destroy(timer);
1299 */
1300         return 0;
1301 }
1302
1303 static void mh_write_sequences(FolderItem *item, gboolean remove_unseen)
1304 {
1305         gchar *mh_sequences_old, *mh_sequences_new;
1306         FILE *mh_sequences_old_fp, *mh_sequences_new_fp;
1307         gchar buf[BUFFSIZE];
1308         gchar *path = NULL;
1309 /*
1310         GTimer *timer = g_timer_new();
1311         g_timer_start(timer);
1312 */
1313         if (!item)
1314                 return;
1315
1316         path = folder_item_get_path(item);
1317
1318         mh_sequences_old = g_strconcat(path, G_DIR_SEPARATOR_S,
1319                                             ".mh_sequences", NULL);
1320         mh_sequences_new = g_strconcat(path, G_DIR_SEPARATOR_S,
1321                                             ".mh_sequences.new", NULL);
1322         if ((mh_sequences_new_fp = g_fopen(mh_sequences_new, "w+b")) != NULL) {
1323                 GSList *msglist = folder_item_get_msg_list(item);
1324                 GSList *cur;
1325                 MsgInfo *info = NULL;
1326                 gint start = -1, end = -1;
1327                 gchar *sequence = g_strdup("");
1328                 msglist = g_slist_sort(msglist, sort_cache_list_by_msgnum);
1329                 cur = msglist;
1330
1331                 /* write the unseen sequence if we don't have to scrap it */
1332                 if (!remove_unseen) do {
1333                         info = (MsgInfo *)(cur ? cur->data:NULL);
1334                         if (info && (MSG_IS_UNREAD(info->flags) || MSG_IS_NEW(info->flags))) {
1335                                 if (start < 0)
1336                                         start = end = info->msgnum;
1337                                 else
1338                                         end = info->msgnum;
1339                         } else {
1340                                 if (start > 0 && end > 0) {
1341                                         gchar *tmp = sequence;
1342                                         if (start != end)
1343                                                 sequence = g_strdup_printf("%s %d-%d ", tmp, start, end);
1344                                         else
1345                                                 sequence = g_strdup_printf("%s %d ", tmp, start);
1346                                         g_free(tmp);
1347                                         start = end = -1;
1348                                 }
1349                         }
1350                         cur = cur ? cur->next:NULL;
1351                 } while (cur || (start > 0 && end > 0));
1352                 if (sequence && strlen(sequence)) {
1353                         fprintf(mh_sequences_new_fp, "%s%s\n",
1354                                         get_unseen_seq_name(), sequence);
1355                         debug_print("wrote unseen sequence: '%s%s'\n",
1356                                         get_unseen_seq_name(), sequence);
1357                 }
1358                 /* rewrite the rest of the file */
1359                 if ((mh_sequences_old_fp = g_fopen(mh_sequences_old, "r+b")) != NULL) {
1360                         while (fgets(buf, sizeof(buf), mh_sequences_old_fp) != NULL) {
1361                                 if (strncmp(buf, get_unseen_seq_name(), strlen(get_unseen_seq_name())))
1362                                         fprintf(mh_sequences_new_fp, "%s", buf);
1363                         }
1364                         fclose(mh_sequences_old_fp);
1365                 }
1366
1367                 fclose(mh_sequences_new_fp);
1368                 g_rename(mh_sequences_new, mh_sequences_old);
1369                 g_free(sequence);
1370                 procmsg_msg_list_free(msglist);
1371         }
1372         g_free(mh_sequences_old);
1373         g_free(mh_sequences_new);
1374         g_free(path);
1375 /*
1376         g_timer_stop(timer);
1377         printf("mh_get_flags: %f secs\n", g_timer_elapsed(timer, NULL));
1378         g_timer_destroy(timer);
1379 */
1380 }
1381
1382 static int mh_item_close(Folder *folder, FolderItem *item)
1383 {
1384         mh_write_sequences(item, FALSE);
1385         return 0;
1386 }