src/mbox_folder.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2001 Hiroyuki Yamamoto & 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #include <unistd.h>
  21 #include <fcntl.h>
  22 #include <glib.h>
  23 #include <stdio.h>
  24 #include <string.h>
  25 #include <sys/types.h>
  26 #include <sys/stat.h>
  27 #include <unistd.h>
  28
  29 #include "mbox_folder.h"
  30 #include "folder.h"
  31 #include "procmsg.h"
  32 #include "procheader.h"
  33 #include "utils.h"
  34 #include "intl.h"
  35
  36 #define MSGBUFSIZE      8192
  37
  38 static void     mbox_folder_init                (Folder         *folder,
  39                                                  const gchar    *name,
  40                                                  const gchar    *path);
  41
  42 static gboolean mbox_write_data(FILE * mbox_fp, FILE * new_fp,
  43                                 gchar * new_filename, gint size);
  44 static gboolean mbox_rewrite(gchar * mbox);
  45 static gboolean mbox_purge_deleted(gchar * mbox);
  46 static gchar * mbox_get_new_path(FolderItem * parent, gchar * name);
  47 static gchar * mbox_get_folderitem_name(gchar * name);
  48
  49 MsgInfo *mbox_fetch_msginfo(Folder *folder, FolderItem *item, gint num);
  50 GSList *mbox_get_num_list(Folder *folder, FolderItem *item);
  51 gboolean mbox_check_msgnum_validity(Folder *folder, FolderItem *item);
  52
  53 Folder *mbox_folder_new(const gchar *name, const gchar *path)
  54 {
  55         Folder *folder;
  56
  57         folder = (Folder *)g_new0(MBOXFolder, 1);
  58         mbox_folder_init(folder, name, path);
  59
  60         return folder;
  61 }
  62
  63 void mbox_folder_destroy(MBOXFolder *folder)
  64 {
  65         folder_local_folder_destroy(LOCAL_FOLDER(folder));
  66 }
  67
  68 static void mbox_folder_init(Folder *folder, const gchar *name, const gchar *path)
  69 {
  70         folder->type = F_MBOX;
  71
  72         folder_local_folder_init(folder, name, path);
  73
  74 /*
  75         folder->get_msg_list        = mbox_get_msg_list;
  76 */
  77         folder->fetch_msg           = mbox_fetch_msg;
  78         folder->fetch_msginfo       = mbox_fetch_msginfo;
  79         folder->add_msg             = mbox_add_msg;
  80         folder->copy_msg            = mbox_copy_msg;
  81         folder->remove_msg          = mbox_remove_msg;
  82         folder->remove_all_msg      = mbox_remove_all_msg;
  83 /*
  84         folder->scan                = mbox_scan_folder;
  85 */
  86         folder->get_num_list        = mbox_get_num_list;
  87         folder->create_tree         = mbox_create_tree;
  88         folder->create_folder       = mbox_create_folder;
  89         folder->rename_folder       = mbox_rename_folder;
  90         folder->remove_folder       = mbox_remove_folder;
  91         folder->check_msgnum_validity
  92                                     = mbox_check_msgnum_validity;
  93 }
  94
  95 static void mbox_folder_create_parent(const gchar * path)
  96 {
  97         if (!is_file_exist(path)) {
  98                 gchar * new_path;
  99
 100                 new_path = g_dirname(path);
 101                 if (new_path[strlen(new_path) - 1] == G_DIR_SEPARATOR)
 102                         new_path[strlen(new_path) - 1] = '\0';
 103
 104                 if (!is_dir_exist(new_path))
 105                         make_dir_hier(new_path);
 106                 g_free(new_path);
 107
 108         }
 109 }
 110
 111
 112 static gchar *mbox_folder_get_path(FolderItem *item)
 113 {
 114         gchar *folder_path;
 115         gchar *path;
 116
 117         g_return_val_if_fail(item != NULL, NULL);
 118
 119         if (item->path && item->path[0] == G_DIR_SEPARATOR) {
 120                 mbox_folder_create_parent(item->path);
 121                 return g_strdup(item->path);
 122         }
 123
 124         folder_path = g_strdup(LOCAL_FOLDER(item->folder)->rootpath);
 125         g_return_val_if_fail(folder_path != NULL, NULL);
 126
 127         if (folder_path[0] == G_DIR_SEPARATOR) {
 128                 if (item->path) {
 129                         path = g_strconcat(folder_path, G_DIR_SEPARATOR_S,
 130                                            item->path, NULL);
 131                 }
 132                 else
 133                         path = g_strdup(folder_path);
 134         } else {
 135                 if (item->path)
 136                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 137                                            folder_path, G_DIR_SEPARATOR_S,
 138                                            item->path, NULL);
 139                 else
 140                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 141                                            folder_path, NULL);
 142         }
 143
 144         g_free(folder_path);
 145
 146         mbox_folder_create_parent(path);
 147
 148         return path;
 149 }
 150
 151
 152 /**********************************************************/
 153 /*                                                        */
 154 /*                   file lock                            */
 155 /*                                                        */
 156 /**********************************************************/
 157
 158
 159 static GSList * file_lock = NULL;
 160
 161 static gboolean mbox_file_lock_file(gchar * base)
 162 {
 163         gchar *lockfile, *locklink;
 164         gint retry = 0;
 165         FILE *lockfp;
 166
 167         lockfile = g_strdup_printf("%s.%d", base, getpid());
 168         if ((lockfp = fopen(lockfile, "wb")) == NULL) {
 169                 FILE_OP_ERROR(lockfile, "fopen");
 170                 g_warning(_("can't create lock file %s\n"), lockfile);
 171                 g_warning(_("use 'flock' instead of 'file' if possible.\n"));
 172                 g_free(lockfile);
 173                 return FALSE;
 174         }
 175
 176         fprintf(lockfp, "%d\n", getpid());
 177         fclose(lockfp);
 178
 179         locklink = g_strconcat(base, ".lock", NULL);
 180         while (link(lockfile, locklink) < 0) {
 181                 FILE_OP_ERROR(lockfile, "link");
 182                 if (retry >= 5) {
 183                         g_warning(_("can't create %s\n"), lockfile);
 184                         unlink(lockfile);
 185                         g_free(lockfile);
 186                         return -1;
 187                 }
 188                 if (retry == 0)
 189                         g_warning(_("mailbox is owned by another"
 190                                     " process, waiting...\n"));
 191                 retry++;
 192                 sleep(5);
 193         }
 194         unlink(lockfile);
 195         g_free(lockfile);
 196
 197         return TRUE;
 198 }
 199
 200 static gboolean mbox_fcntl_lockwrite_file(FILE * fp)
 201 {
 202         struct flock lck;
 203
 204         lck.l_type = F_WRLCK;
 205         lck.l_whence = 0;
 206         lck.l_start = 0;
 207         lck.l_len = 0;
 208
 209         if (fcntl(fileno(fp), F_SETLK, &lck) < 0)
 210                 return FALSE;
 211         else
 212                 return TRUE;
 213 }
 214
 215 static gboolean mbox_fcntl_lockread_file(FILE * fp)
 216 {
 217         struct flock lck;
 218
 219         lck.l_type = F_RDLCK;
 220         lck.l_whence = 0;
 221         lck.l_start = 0;
 222         lck.l_len = 0;
 223
 224         if (fcntl(fileno(fp), F_SETLK, &lck) < 0)
 225                 return FALSE;
 226         else
 227                 return TRUE;
 228 }
 229
 230 static gboolean mbox_fcntl_unlock_file(FILE * fp)
 231 {
 232         struct flock lck;
 233
 234         lck.l_type = F_UNLCK;
 235         lck.l_whence = 0;
 236         lck.l_start = 0;
 237         lck.l_len = 0;
 238
 239         if (fcntl(fileno(fp), F_SETLK, &lck) < 0)
 240                 return FALSE;
 241         else
 242                 return TRUE;
 243 }
 244
 245 static gboolean mbox_file_unlock_file(gchar * base)
 246 {
 247         gchar *lockfile;
 248
 249         lockfile = g_strdup_printf("%s.lock", base);
 250         unlink(lockfile);
 251         g_free(lockfile);
 252
 253         return TRUE;
 254 }
 255
 256 static gboolean mbox_lockread_file(FILE * fp, gchar * base)
 257 {
 258         gboolean result;
 259
 260         result = mbox_fcntl_lockread_file(fp);
 261         if (!result) {
 262                 if ((result = mbox_file_lock_file(base)) == TRUE) {
 263                         file_lock = g_slist_append(file_lock, g_strdup(base));
 264                         debug_print("lockfile lock %s.\n", base);
 265                 }
 266                 else
 267                         g_warning(_("could not lock read file %s\n"), base);
 268         }
 269         else
 270                 debug_print("fcntl lock %s.\n", base);
 271
 272         return result;
 273 }
 274
 275 static gboolean mbox_lockwrite_file(FILE * fp, gchar * base)
 276 {
 277         gboolean result;
 278
 279         result = mbox_fcntl_lockwrite_file(fp);
 280         if (!result) {
 281                 if ((result = mbox_file_lock_file(base)) == TRUE) {
 282                         file_lock = g_slist_append(file_lock, g_strdup(base));
 283                         debug_print("lockfile lock %s.\n", base);
 284                 }
 285                 else
 286                         g_warning(_("could not lock write file %s\n"), base);
 287         }
 288         else
 289                 debug_print("fcntl lock %s.\n", base);
 290
 291         return result;
 292 }
 293
 294 static gboolean mbox_unlock_file(FILE * fp, gchar * base)
 295 {
 296         gboolean result = FALSE;
 297         GSList * l;
 298         gboolean unlocked = FALSE;
 299
 300         for(l = file_lock ; l != NULL ; l = g_slist_next(l)) {
 301                 gchar * data = l->data;
 302
 303                 if (strcmp(data, base) == 0) {
 304                         file_lock = g_slist_remove(file_lock, data);
 305                         g_free(data);
 306                         result = mbox_file_unlock_file(base);
 307                         unlocked = TRUE;
 308                         debug_print("lockfile unlock - %s.\n", base);
 309                         break;
 310                 }
 311         }
 312
 313         if (!unlocked) {
 314                 result = mbox_fcntl_unlock_file(fp);
 315                 debug_print("fcntl unlock - %s.\n", base);
 316         }
 317
 318         return result;
 319 }
 320
 321 /**********************************************************/
 322 /*                                                        */
 323 /*                   mbox parsing                         */
 324 /*                                                        */
 325 /**********************************************************/
 326
 327 #define MAILFILE_ERROR_NO_ERROR          0x000
 328 #define MAILFILE_ERROR_FILE_NOT_FOUND    0x001
 329 #define MAILFILE_ERROR_MEMORY            0x002
 330 #define MAILFILE_ERROR_MESSAGE_NOT_FOUND 0x003
 331
 332 static int mailfile_error = MAILFILE_ERROR_NO_ERROR;
 333
 334 #define STATE_BEGIN       0x000
 335 #define STATE_TEXT_READ   0x001
 336 #define STATE_FROM_READ   0x002
 337 #define STATE_FIELD_READ  0x003
 338 #define STATE_END         0x004
 339 #define STATE_END_OF_FILE 0x005
 340 #define STATE_MEM_ERROR   0x006
 341 #define STATE_TEXT_BEGIN  0x007
 342
 343 #define STATE_MASK        0x0FF /* filter state from functions */
 344
 345 #define STATE_RESTORE_POS       0x100 /* go back while reading */
 346
 347 typedef struct _mailfile mailfile;
 348
 349 struct _mailfile
 350 {
 351         gint count;
 352         gchar * filename;
 353         GList * msg_list;
 354 };
 355
 356 struct _message
 357 {
 358         int msgnum;
 359         int offset;
 360         int header;
 361         int content;
 362         int end;
 363         int marked;
 364         gchar * messageid;
 365         gchar * fromspace;
 366         MsgFlags flags;
 367         MsgFlags old_flags;
 368         gboolean fetched;
 369 };
 370
 371 #define MSG_IS_INVALID(msg) \
 372         ((msg).perm_flags == (msg).tmp_flags && (msg).tmp_flags == -1)
 373
 374 #define MSG_SET_INVALID(msg) \
 375         ((msg).perm_flags = (msg).tmp_flags = -1)
 376
 377 static int startFrom(char * s)
 378 {
 379         return (strncmp(s, "From ", 5) == 0);
 380 }
 381
 382 static int startSpace(char * s)
 383 {
 384         return ((*s == ' ') || (*s == '\t'));
 385 }
 386
 387 static int startEmpty(char * s)
 388 {
 389         return (*s == '\n');
 390 }
 391
 392 static void free_msg_list(GList * l)
 393 {
 394         GList * elt = g_list_first(l);
 395
 396         while (elt)
 397                 {
 398                         g_free(elt->data);
 399                         elt = g_list_next(elt);
 400                 }
 401
 402         g_list_free(l);
 403 }
 404
 405
 406 static mailfile * mailfile_init_from_file(FILE * f, gchar * filename)
 407 {
 408         int state;
 409         GList * msg_list = NULL;
 410         char * r = NULL;
 411         char s[256];
 412         int lastpos = 0;
 413         int former_pos = 0;
 414         int ignore_next = 0;
 415         int msgnum = 0;
 416         struct _message * data = NULL;
 417         mailfile * mf;
 418
 419         state = STATE_BEGIN;
 420
 421
 422         while (state != STATE_END_OF_FILE) {
 423                 if ((state & STATE_RESTORE_POS) == 0) {
 424                         former_pos = lastpos;
 425                         lastpos = ftell(f);
 426
 427                         r = fgets(s, 256, f);
 428
 429                         if (r != NULL && *r)
 430                                 ignore_next = (s[strlen(s) - 1] != '\n');
 431                         else
 432                                 ignore_next = 0;
 433                 }
 434
 435                 switch(state & 0x0F) {
 436                 case STATE_BEGIN:
 437                         if (r == NULL)
 438                                 state = STATE_END_OF_FILE;
 439                         else if (startFrom(s)) {
 440                                 state = STATE_FROM_READ;
 441
 442                                 data = g_new0(struct _message, 1);
 443                                 if (data == NULL) {
 444                                         free_msg_list(msg_list);
 445                                         return NULL;
 446                                 }
 447
 448                                 msgnum ++;
 449                                 data->msgnum = msgnum;
 450                                 data->offset = lastpos;
 451                                 data->header = lastpos;
 452                                 data->end = 0;
 453                                 data->content = 0;
 454                                 data->messageid = NULL;
 455                                 data->fromspace = NULL;
 456                                 MSG_SET_INVALID(data->flags);
 457                                 MSG_SET_INVALID(data->old_flags);
 458                                 data->fetched = FALSE;
 459                                 msg_list = g_list_append(msg_list,
 460                                                          (gpointer) data);
 461                         }
 462                         else
 463                                 state = STATE_BEGIN;
 464
 465                         break;
 466
 467                 case STATE_TEXT_READ:
 468                         if (r == NULL)
 469                                 state = STATE_END;
 470                         else if (startFrom(s))
 471                                 state = STATE_END | STATE_RESTORE_POS;
 472                         else
 473                                 state = STATE_TEXT_READ;
 474                         break;
 475
 476                 case STATE_TEXT_BEGIN:
 477                         data->content = lastpos;
 478                         if (r == NULL)
 479                                 state = STATE_END;
 480                         else if (startFrom(s)) {
 481                                 state = STATE_END | STATE_RESTORE_POS;
 482                         }
 483                         else {
 484                                 state = STATE_TEXT_READ;
 485                         }
 486                         break;
 487
 488                 case STATE_FROM_READ:
 489                         data->content = lastpos;
 490                         if (r == NULL)
 491                                 state = STATE_END;
 492                         else if (startSpace(s))
 493                                 state = STATE_FROM_READ;
 494                         else if (startEmpty(s))
 495                                 state = STATE_TEXT_READ;
 496                         else
 497                                 state = STATE_FIELD_READ;
 498                         break;
 499
 500                 case STATE_FIELD_READ:
 501                         data->content = lastpos;
 502                         if (r == NULL)
 503                                 state = STATE_END;
 504                         else if (startSpace(s))
 505                                 state = STATE_FIELD_READ;
 506                         else if (startEmpty(s)) {
 507                                 state = STATE_TEXT_BEGIN;
 508                         }
 509                         else
 510                                 state = STATE_FIELD_READ;
 511                         break;
 512                 }
 513
 514                 if ((state & STATE_MASK) == STATE_END) {
 515                         state = STATE_BEGIN | (state & STATE_RESTORE_POS);
 516                         data->end = lastpos;
 517                 }
 518
 519                 if (ignore_next) {
 520                         do {
 521                                 r = fgets(s, 256, f);
 522                                 if (r == NULL || *r == '\0')
 523                                         break;
 524                         }
 525                         while (s[strlen(s) - 1] != '\n');
 526                 }
 527         }
 528
 529         mf = (mailfile *) g_new0(struct _mailfile, 1);
 530         if (mf == NULL) {
 531                 free_msg_list(msg_list);
 532                 mailfile_error = MAILFILE_ERROR_MEMORY;
 533                 return NULL;
 534         }
 535
 536         mf->msg_list = g_list_first(msg_list);
 537
 538         mf->filename = g_strdup(filename);
 539         mf->count = msgnum;
 540
 541         mailfile_error = MAILFILE_ERROR_NO_ERROR;
 542
 543         return mf;
 544 }
 545
 546 static mailfile * mailfile_init(char * filename)
 547 {
 548
 549         FILE * f;
 550         mailfile * mf;
 551
 552         f = fopen(filename, "rb");
 553
 554         if (f == NULL) {
 555                 mailfile_error = MAILFILE_ERROR_FILE_NOT_FOUND;
 556                 return NULL;
 557         }
 558
 559         mbox_lockread_file(f, filename);
 560
 561         mf = mailfile_init_from_file(f, filename);
 562
 563         mbox_unlock_file(f, filename);
 564
 565         fclose(f);
 566
 567         return mf;
 568 }
 569
 570 static void mailfile_done(mailfile * f)
 571 {
 572         free_msg_list(f->msg_list);
 573         g_free(f->filename);
 574
 575         g_free(f);
 576 }
 577
 578 /*
 579 #define MAX_READ 4096
 580
 581 static char * readfile(char * filename, int offset, int max_offset)
 582 {
 583         char * message;
 584         int size;
 585         int pos;
 586         int max;
 587         int bread;
 588         FILE * handle;
 589
 590         handle = fopen(filename, "rb");
 591
 592         if (handle == NULL) {
 593                 mailfile_error = MAILFILE_ERROR_FILE_NOT_FOUND;
 594                 return NULL;
 595         }
 596
 597         size = max_offset - offset;
 598
 599         message = (char *) malloc(size + 1);
 600         if (message == NULL) {
 601                 fclose(handle);
 602                 mailfile_error = MAILFILE_ERROR_MEMORY;
 603                 return NULL;
 604         }
 605
 606         fseek(handle, offset, SEEK_SET);
 607
 608         pos = 0;
 609         while (pos < size) {
 610                 if ((size - pos) > MAX_READ)
 611                         max = MAX_READ;
 612                 else
 613                         max = (size - pos);
 614
 615                 bread = fread(message + pos, 1, max, handle);
 616
 617                 if (bread != -1)
 618                         pos += bread;
 619
 620                 if (bread < max)
 621                         break;
 622         }
 623
 624         message[pos] = 0;
 625
 626         fclose(handle);
 627
 628         return message;
 629 }
 630
 631 static char * mailfile_readmsg(mailfile f, int index)
 632 {
 633         GList * nth;
 634         int max_offset;
 635         int offset;
 636         char * message;
 637         struct _message * msginfo;
 638
 639         nth = g_list_nth(f->msg_list, index);
 640
 641         if (!nth) {
 642                 mailfile_error = MAILFILE_ERROR_MESSAGE_NOT_FOUND;
 643                 return NULL;
 644         }
 645
 646         msginfo = (struct _message *)nth->data;
 647
 648         offset = msginfo->offset;
 649         max_offset = msginfo->end;
 650         message = readfile(f->filename, offset, max_offset);
 651
 652         mailfile_error = MAILFILE_ERROR_NO_ERROR;
 653
 654         return message;
 655 }
 656
 657 static char * mailfile_readheader(mailfile f, int index)
 658 {
 659         GList * nth;
 660         int max_offset;
 661         int offset;
 662         char * message;
 663         struct _message * msginfo;
 664
 665         nth = g_list_nth(f->msg_list, index);
 666
 667         if (!nth) {
 668                 mailfile_error = MAILFILE_ERROR_MESSAGE_NOT_FOUND;
 669                 return NULL;
 670         }
 671
 672         msginfo = (struct _message *)nth->data;
 673
 674         offset = msginfo->offset;
 675         max_offset = msginfo->content;
 676         message = readfile(f->filename, offset, max_offset);
 677
 678         mailfile_error = MAILFILE_ERROR_NO_ERROR;
 679
 680         return message;
 681 }
 682
 683 static int mailfile_count(mailfile * f)
 684 {
 685         return g_list_length(f->msg_list);
 686 }
 687
 688 static int mailfile_find_deleted(mailfile f, char * filename)
 689 {
 690         FILE * handle;
 691
 692         handle = fopen(filename, "rb");
 693
 694         while (elt) {
 695                 struct _message m = elt->data;
 696                 n = fread(&m.deleted, sizeof(int), 1, handle);
 697                 if (!n)
 698                         break;
 699                 elt = g_list_next(elt);
 700         }
 701
 702         fclose(handle);
 703 }
 704 */
 705
 706
 707
 708 /**********************************************************/
 709 /*                                                        */
 710 /*                   mbox cache operations                */
 711 /*                                                        */
 712 /**********************************************************/
 713
 714 struct _mboxcache {
 715         gchar * filename;
 716         mailfile * mf;
 717         GPtrArray * tab_mf;
 718         gint mtime;
 719         gboolean modification;
 720 };
 721
 722 typedef struct _mboxcache mboxcache;
 723
 724 static GHashTable * mbox_cache_table = NULL;
 725
 726 static MsgInfo *mbox_parse_msg(FILE * fp, struct _message * msg,
 727                                FolderItem *item)
 728 {
 729         MsgInfo *msginfo;
 730         MsgFlags flags = { 0, 0 };
 731
 732         MSG_SET_PERM_FLAGS(flags, MSG_NEW | MSG_UNREAD);
 733
 734         g_return_val_if_fail(fp != NULL, NULL);
 735
 736         if (item != NULL) {
 737                 if (item->stype == F_QUEUE) {
 738                         MSG_SET_TMP_FLAGS(flags, MSG_QUEUED);
 739                 } else if (item->stype == F_DRAFT) {
 740                         MSG_SET_TMP_FLAGS(flags, MSG_DRAFT);
 741                 }
 742         }
 743
 744         msginfo = procheader_parse_stream(fp, flags, FALSE, FALSE);
 745
 746         if (!msginfo) return NULL;
 747
 748         if (item != NULL) {
 749                 msginfo->msgnum = msg->msgnum;
 750                 msginfo->folder = item;
 751         }
 752
 753         return msginfo;
 754 }
 755
 756 static void mbox_cache_init()
 757 {
 758         mbox_cache_table = g_hash_table_new(g_str_hash, g_str_equal);
 759 }
 760
 761 static void mbox_cache_free_mbox(mboxcache * cache)
 762 {
 763         g_hash_table_remove(mbox_cache_table, cache->filename);
 764
 765         if (cache->mf)
 766                 mailfile_done(cache->mf);
 767         if (cache->tab_mf)
 768                 g_ptr_array_free(cache->tab_mf, FALSE);
 769         if (cache->filename)
 770                 g_free(cache->filename);
 771         g_free(cache);
 772 }
 773
 774 static void mbox_cache_get_msginfo_from_file(FILE * fp, GList * msg_list)
 775 {
 776         GList * l;
 777         MsgInfo * msginfo;
 778
 779         for(l = msg_list ; l != NULL ; l = g_list_next(l)) {
 780                 struct _message * msg;
 781
 782                 msg = (struct _message *) l->data;
 783
 784                 fseek(fp, msg->header, SEEK_SET);
 785                 msginfo = mbox_parse_msg(fp, msg, NULL);
 786                 if (msginfo) {
 787                         if (msginfo->msgid)
 788                                 msg->messageid =
 789                                         g_strdup(msginfo->msgid);
 790                         if (msginfo->fromspace)
 791                                 msg->fromspace =
 792                                         g_strdup(msginfo->fromspace);
 793                         msg->flags = msginfo->flags;
 794                         msg->old_flags = msginfo->flags;
 795
 796                         procmsg_msginfo_free(msginfo);
 797                 }
 798         }
 799 }
 800
 801 static void mbox_cache_get_msginfo(gchar * filename, GList * msg_list)
 802 {
 803         FILE * fp;
 804
 805         fp = fopen(filename, "rb");
 806         if (fp == NULL)
 807                 return;
 808
 809         mbox_cache_get_msginfo_from_file(fp, msg_list);
 810         fclose(fp);
 811 }
 812
 813 static mboxcache * mbox_cache_read_mbox(gchar * filename)
 814 {
 815         mboxcache * cache;
 816         struct stat s;
 817         mailfile * mf;
 818         GList * l;
 819
 820         if (stat(filename, &s) < 0)
 821                 return NULL;
 822
 823         mf = mailfile_init(filename);
 824         if (mf == NULL)
 825                 return NULL;
 826
 827         cache = g_new0(mboxcache, 1);
 828
 829         cache->mtime = s.st_mtime;
 830         cache->mf = mf;
 831         cache->filename = g_strdup(filename);
 832         cache->modification = FALSE;
 833
 834         cache->tab_mf = g_ptr_array_new();
 835         for(l = mf->msg_list ; l != NULL ; l = g_list_next(l))
 836                 g_ptr_array_add(cache->tab_mf, l->data);
 837
 838         mbox_cache_get_msginfo(filename, mf->msg_list);
 839
 840         debug_print("read mbox - %s\n", filename);
 841
 842         return cache;
 843 }
 844
 845 static mboxcache * mbox_cache_read_mbox_from_file(FILE * fp, gchar * filename)
 846 {
 847         mboxcache * cache;
 848         struct stat s;
 849         mailfile * mf;
 850         GList * l;
 851
 852         if (stat(filename, &s) < 0)
 853                 return NULL;
 854
 855         mf = mailfile_init_from_file(fp, filename);
 856         if (mf == NULL)
 857                 return NULL;
 858
 859         cache = g_new0(mboxcache, 1);
 860
 861         cache->mtime = s.st_mtime;
 862         cache->mf = mf;
 863         cache->filename = g_strdup(filename);
 864
 865         cache->tab_mf = g_ptr_array_new();
 866         for(l = mf->msg_list ; l != NULL ; l = g_list_next(l))
 867                 g_ptr_array_add(cache->tab_mf, l->data);
 868
 869         mbox_cache_get_msginfo_from_file(fp, mf->msg_list);
 870
 871         debug_print("read mbox from file - %s\n", filename);
 872
 873         return cache;
 874 }
 875
 876 static void mbox_cache_insert_mbox(mboxcache * data)
 877 {
 878         if (mbox_cache_table == NULL)
 879                 mbox_cache_init();
 880
 881         g_hash_table_insert(mbox_cache_table, data->filename, data);
 882 }
 883
 884 static mboxcache * mbox_cache_get_mbox(gchar * filename)
 885 {
 886         if (mbox_cache_table == NULL)
 887                 mbox_cache_init();
 888
 889         return g_hash_table_lookup(mbox_cache_table, filename);
 890 }
 891
 892
 893 static gint mbox_cache_get_count(gchar * filename)
 894 {
 895         mboxcache * cache;
 896
 897         cache = mbox_cache_get_mbox(filename);
 898         if (cache == NULL)
 899                 return -1;
 900         if (cache->mf == NULL)
 901                 return -1;
 902         return cache->mf->count;
 903 }
 904
 905 static GList * mbox_cache_get_msg_list(gchar * filename)
 906 {
 907         mboxcache * cache;
 908
 909         cache = mbox_cache_get_mbox(filename);
 910
 911         if (cache == NULL)
 912                 return NULL;
 913
 914         if (cache->mf == NULL)
 915                 return NULL;
 916
 917         return cache->mf->msg_list;
 918 }
 919
 920 static void mbox_cache_synchronize_lists(GList * old_msg_list,
 921                                          GList * new_msg_list)
 922 {
 923         GList * l;
 924         GList * l2;
 925
 926         for(l2 = old_msg_list ; l2 != NULL ; l2 = g_list_next(l2)) {
 927                 struct _message * msg2 = l2->data;
 928
 929                 if ((msg2->messageid == NULL) ||
 930                     (msg2->fromspace == NULL))
 931                         continue;
 932
 933                 for(l = new_msg_list ; l != NULL ; l = g_list_next(l)) {
 934                         struct _message * msg = l->data;
 935
 936                         if ((msg->messageid == NULL) ||
 937                             (msg->fromspace == NULL))
 938                                 continue;
 939
 940                         if ((strcmp(msg->messageid, msg2->messageid) == 0) &&
 941                             (strcmp(msg->fromspace, msg2->fromspace) == 0)) {
 942                                 if (msg2->flags.perm_flags != msg2->old_flags.perm_flags) {
 943                                         msg->flags = msg2->flags;
 944                                         break;
 945                                 }
 946                         }
 947                 }
 948         }
 949 }
 950
 951 static void mbox_cache_synchronize(gchar * filename, gboolean sync)
 952 {
 953         mboxcache * new_cache;
 954         mboxcache * old_cache;
 955         gboolean scan_new = TRUE;
 956         struct stat s;
 957
 958         old_cache = mbox_cache_get_mbox(filename);
 959
 960         if (old_cache != NULL) {
 961                 if (stat(filename, &s) < 0) {
 962                         FILE_OP_ERROR(filename, "stat");
 963                 } else if (old_cache->mtime == s.st_mtime) {
 964                         debug_print("Folder is not modified.\n");
 965                         scan_new = FALSE;
 966                 }
 967         }
 968
 969         if (scan_new) {
 970                 /*
 971                 if (strstr(filename, "trash") == 0)
 972                         printf("old_cache: %p %s\n", old_cache, filename);
 973                         if (old_cache) {
 974                                 printf("begin old\n");
 975                                 for(l = old_cache->mf->msg_list ; l != NULL ;
 976                                     l = g_list_next(l)) {
 977                                         struct _message * msg = l->data;
 978                                         printf("%p\n", msg);
 979                                 }
 980                                 printf("end old\n");
 981                         }
 982                 */
 983
 984                 new_cache = mbox_cache_read_mbox(filename);
 985
 986                 /*
 987                 if (strstr(filename, "trash") == 0)
 988                         printf("new_cache: %p %s\n", new_cache, filename);
 989                         if (new_cache) {
 990                                 printf("begin new\n");
 991                                 for(l = new_cache->mf->msg_list ; l != NULL ;
 992                                     l = g_list_next(l)) {
 993                                         struct _message * msg = l->data;
 994                                         printf("%p\n", msg);
 995                                 }
 996                                 printf("end new\n");
 997                         }
 998                 */
 999
1000                 if (!new_cache)
1001                         return;
1002
1003                 if (sync && new_cache && old_cache)
1004                         mbox_cache_synchronize_lists(old_cache->mf->msg_list,
1005                                                      new_cache->mf->msg_list);
1006
1007                 if (old_cache != NULL)
1008                         mbox_cache_free_mbox(old_cache);
1009
1010                 if (new_cache) {
1011                         mbox_cache_insert_mbox(new_cache);
1012                         /*
1013                         printf("insert %p %s\n", new_cache, new_cache->filename);
1014                         printf("inserted %s %p\n", filename,
1015                                mbox_cache_get_mbox(filename));
1016                         */
1017                 }
1018         }
1019 }
1020
1021 static void mbox_cache_synchronize_from_file(FILE * fp, gchar * filename,
1022                                              gboolean sync)
1023 {
1024         mboxcache * new_cache;
1025         mboxcache * old_cache;
1026         gboolean scan_new = TRUE;
1027         struct stat s;
1028
1029         old_cache = mbox_cache_get_mbox(filename);
1030
1031         if (old_cache != NULL) {
1032                 if (stat(filename, &s) < 0) {
1033                         FILE_OP_ERROR(filename, "stat");
1034                 } else if (old_cache->mtime == s.st_mtime) {
1035                         debug_print("Folder is not modified.\n");
1036                         scan_new = FALSE;
1037                 }
1038         }
1039
1040
1041         if (scan_new) {
1042
1043                 /*
1044                 GList * l;
1045
1046                 if (strstr(filename, "trash") == 0)
1047                         printf("old_cache: %p %s\n", old_cache, filename);
1048
1049                         if (old_cache) {
1050                                 printf("begin old\n");
1051                                 for(l = old_cache->mf->msg_list ; l != NULL ;
1052                                     l = g_list_next(l)) {
1053                                         struct _message * msg = l->data;
1054                                         printf("%p\n", msg);
1055                                 }
1056                                 printf("end old\n");
1057                         }
1058                 */
1059
1060                 new_cache = mbox_cache_read_mbox_from_file(fp, filename);
1061
1062                 /*
1063                 if (strstr(filename, "trash") == 0)
1064                         printf("new_cache: %p %s\n", new_cache, filename);
1065
1066                         if (new_cache) {
1067                                 printf("begin new\n");
1068                                 for(l = new_cache->mf->msg_list ; l != NULL ;
1069                                     l = g_list_next(l)) {
1070                                         struct _message * msg = l->data;
1071                                         printf("%p\n", msg);
1072                                 }
1073                                 printf("end new\n");
1074                         }
1075                 */
1076
1077                 if (!new_cache)
1078                         return;
1079
1080                 if (sync && new_cache && old_cache)
1081                         mbox_cache_synchronize_lists(old_cache->mf->msg_list,
1082                                                      new_cache->mf->msg_list);
1083
1084                 if (old_cache != NULL)
1085                         mbox_cache_free_mbox(old_cache);
1086
1087                 if (new_cache) {
1088                         mbox_cache_insert_mbox(new_cache);
1089                         /*
1090                         printf("insert %p %s\n", new_cache, new_cache->filename);
1091                         printf("inserted %s %p\n", filename,
1092                                mbox_cache_get_mbox(filename));
1093                         */
1094                 }
1095         }
1096 }
1097
1098 gboolean mbox_cache_msg_fetched(gchar * filename, gint num)
1099 {
1100         struct _message * msg;
1101         mboxcache * cache;
1102
1103         cache = mbox_cache_get_mbox(filename);
1104
1105         if (cache == NULL)
1106                 return FALSE;
1107
1108         msg = (struct _message *) g_ptr_array_index(cache->tab_mf,
1109                                                     num - 1);
1110         if (msg == NULL)
1111                 return FALSE;
1112
1113         return msg->fetched;
1114 }
1115
1116 void mbox_cache_msg_set_fetched(gchar * filename, gint num)
1117 {
1118         struct _message * msg;
1119         mboxcache * cache;
1120
1121         cache = mbox_cache_get_mbox(filename);
1122
1123         if (cache == NULL)
1124                 return;
1125
1126         msg = (struct _message *) g_ptr_array_index(cache->tab_mf,
1127                                                     num - 1);
1128         if (msg == NULL)
1129                 return;
1130
1131         msg->fetched = TRUE;
1132 }
1133
1134 struct _message * mbox_cache_get_msg(gchar * filename, gint num)
1135 {
1136         mboxcache * cache;
1137
1138         cache = mbox_cache_get_mbox(filename);
1139
1140         if (cache == NULL) {
1141                 return NULL;
1142         }
1143
1144         return (struct _message *) g_ptr_array_index(cache->tab_mf,
1145                                                      num - 1);
1146 }
1147
1148
1149 /**********************************************************/
1150 /*                                                        */
1151 /*                   mbox operations                      */
1152 /*                                                        */
1153 /**********************************************************/
1154
1155
1156 GSList *mbox_get_msg_list(Folder *folder, FolderItem *item, gboolean use_cache)
1157 {
1158         GSList *mlist;
1159         MsgInfo * msginfo;
1160         GList * l;
1161         FILE * fp;
1162         gchar * mbox_path;
1163
1164 #ifdef MEASURE_TIME
1165         struct timeval tv_before, tv_after, tv_result;
1166
1167         gettimeofday(&tv_before, NULL);
1168 #endif
1169
1170         mlist = NULL;
1171
1172         mbox_path = mbox_folder_get_path(item);
1173
1174         if (mbox_path == NULL)
1175                 return NULL;
1176
1177         mbox_purge_deleted(mbox_path);
1178
1179         fp = fopen(mbox_path, "rb");
1180
1181         if (fp == NULL) {
1182                 g_free(mbox_path);
1183                 return NULL;
1184         }
1185
1186         mbox_lockread_file(fp, mbox_path);
1187
1188         mbox_cache_synchronize_from_file(fp, mbox_path, TRUE);
1189
1190         item->last_num = mbox_cache_get_count(mbox_path);
1191
1192         for(l = mbox_cache_get_msg_list(mbox_path) ; l != NULL ;
1193             l = g_list_next(l)) {
1194                 struct _message * msg;
1195
1196                 msg = (struct _message *) l->data;
1197
1198                 if (MSG_IS_INVALID(msg->flags) || !MSG_IS_REALLY_DELETED(msg->flags)) {
1199                         fseek(fp, msg->header, SEEK_SET);
1200
1201                         msginfo = mbox_parse_msg(fp, msg, item);
1202
1203                         if (!MSG_IS_INVALID(msg->flags))
1204                                 msginfo->flags = msg->flags;
1205                         else {
1206                                 msg->old_flags = msginfo->flags;
1207                                 msg->flags = msginfo->flags;
1208                         }
1209
1210                         mlist = g_slist_append(mlist, msginfo);
1211                 }
1212                 else {
1213                         MSG_SET_PERM_FLAGS(msg->flags, MSG_REALLY_DELETED);
1214                 }
1215         }
1216
1217         mbox_unlock_file(fp, mbox_path);
1218
1219         g_free(mbox_path);
1220
1221         fclose(fp);
1222
1223 #ifdef MEASURE_TIME
1224         gettimeofday(&tv_after, NULL);
1225
1226         timersub(&tv_after, &tv_before, &tv_result);
1227         g_print("mbox_get_msg_list: %s: elapsed time: %ld.%06ld sec\n",
1228                 mbox_path, tv_result.tv_sec, tv_result.tv_usec);
1229 #endif
1230
1231         return mlist;
1232 }
1233
1234 static gboolean mbox_extract_msg(FolderItem * item, gint msgnum,
1235                                  gchar * dest_filename)
1236 {
1237         struct _message * msg;
1238         gint offset;
1239         gint max_offset;
1240         gint size;
1241         FILE * src;
1242         FILE * dest;
1243         gboolean err;
1244         /*      GList * msg_list;*/
1245         gboolean already_fetched;
1246         gchar * mbox_path;
1247
1248         mbox_path = mbox_folder_get_path(item);
1249
1250         if (mbox_path == NULL)
1251                 return FALSE;
1252
1253         src = fopen(mbox_path, "rb");
1254         if (src == NULL) {
1255                 g_free(mbox_path);
1256                 return FALSE;
1257         }
1258
1259         mbox_lockread_file(src, mbox_path);
1260
1261         mbox_cache_synchronize_from_file(src, mbox_path, TRUE);
1262
1263         already_fetched = mbox_cache_msg_fetched(mbox_path, msgnum);
1264
1265         if (already_fetched) {
1266                 mbox_unlock_file(src, mbox_path);
1267                 fclose(src);
1268                 g_free(mbox_path);
1269                 return TRUE;
1270         }
1271
1272         msg = mbox_cache_get_msg(mbox_path, msgnum);
1273
1274         if (msg == NULL) {
1275                 mbox_unlock_file(src, mbox_path);
1276                 fclose(src);
1277                 g_free(mbox_path);
1278                 return FALSE;
1279         }
1280
1281         offset = msg->offset;
1282         max_offset = msg->end;
1283
1284         size = max_offset - offset;
1285
1286         fseek(src, offset, SEEK_SET);
1287
1288         dest = fopen(dest_filename, "wb");
1289         if (dest == NULL) {
1290                 mbox_unlock_file(src, mbox_path);
1291                 fclose(src);
1292                 g_free(mbox_path);
1293                 return FALSE;
1294         }
1295
1296         if (change_file_mode_rw(dest, dest_filename) < 0) {
1297                 FILE_OP_ERROR(dest_filename, "chmod");
1298                 g_warning(_("can't change file mode\n"));
1299         }
1300
1301         if (!mbox_write_data(src, dest, dest_filename, size)) {
1302                 mbox_unlock_file(src, mbox_path);
1303                 fclose(dest);
1304                 fclose(src);
1305                 unlink(dest_filename);
1306                 g_free(mbox_path);
1307                 return FALSE;
1308         }
1309
1310         err = FALSE;
1311
1312         if (ferror(src)) {
1313                 FILE_OP_ERROR(mbox_path, "fread");
1314                 err = TRUE;
1315         }
1316
1317         mbox_cache_msg_set_fetched(mbox_path, msgnum);
1318
1319         if (fclose(dest) == -1) {
1320                 FILE_OP_ERROR(dest_filename, "fclose");
1321                 err = TRUE;
1322         }
1323
1324         mbox_unlock_file(src, mbox_path);
1325
1326         if (fclose(src) == -1) {
1327                 FILE_OP_ERROR(mbox_path, "fclose");
1328                 err = TRUE;
1329         }
1330
1331         g_free(mbox_path);
1332
1333         if (err) {
1334                 unlink(dest_filename);
1335                 return FALSE;
1336         }
1337
1338         return TRUE;
1339 }
1340
1341 gchar *mbox_fetch_msg(Folder *folder, FolderItem *item, gint num)
1342 {
1343         gchar *path;
1344         gchar *filename;
1345
1346         g_return_val_if_fail(item != NULL, NULL);
1347
1348         path = folder_item_get_path(item);
1349         if (!is_dir_exist(path))
1350                 make_dir_hier(path);
1351
1352         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(num), NULL);
1353
1354         g_free(path);
1355
1356         if (!mbox_extract_msg(item, num, filename)) {
1357                 g_free(filename);
1358                 return NULL;
1359         }
1360
1361         return filename;
1362 }
1363
1364 gint mbox_add_msg(Folder *folder, FolderItem *dest, const gchar *file,
1365                   gboolean remove_source)
1366 {
1367         FILE * src_fp;
1368         FILE * dest_fp;
1369         gchar buf[BUFSIZ];
1370         gint old_size;
1371         gint n_read;
1372         gboolean err;
1373         gchar * mbox_path;
1374         gchar from_line[MSGBUFSIZE];
1375
1376         if (dest->last_num < 0) {
1377                 mbox_scan_folder(folder, dest);
1378                 if (dest->last_num < 0) return -1;
1379         }
1380
1381         src_fp = fopen(file, "rb");
1382         if (src_fp == NULL) {
1383                 return -1;
1384         }
1385
1386         mbox_path = mbox_folder_get_path(dest);
1387         if (mbox_path == NULL)
1388                 return -1;
1389
1390         dest_fp = fopen(mbox_path, "ab");
1391         if (dest_fp == NULL) {
1392                 fclose(src_fp);
1393                 g_free(mbox_path);
1394                 return -1;
1395         }
1396
1397         if (change_file_mode_rw(dest_fp, mbox_path) < 0) {
1398                 FILE_OP_ERROR(mbox_path, "chmod");
1399                 g_warning(_("can't change file mode\n"));
1400         }
1401
1402         old_size = ftell(dest_fp);
1403
1404         mbox_lockwrite_file(dest_fp, mbox_path);
1405
1406         if (fgets(from_line, sizeof(from_line), src_fp) == NULL) {
1407                 mbox_unlock_file(dest_fp, mbox_path);
1408                 g_warning(_("unvalid file - %s.\n"), file);
1409                 fclose(dest_fp);
1410                 fclose(src_fp);
1411                 g_free(mbox_path);
1412                 return -1;
1413         }
1414
1415         if (strncmp(from_line, "From ", 5) != 0) {
1416                 struct stat s;
1417
1418                 if (stat(file, &s) < 0) {
1419                         mbox_unlock_file(dest_fp, mbox_path);
1420                         g_warning(_("invalid file - %s.\n"), file);
1421                         fclose(dest_fp);
1422                         fclose(src_fp);
1423                         g_free(mbox_path);
1424                         return -1;
1425                 }
1426
1427                 fprintf(dest_fp, "From - %s", ctime(&s.st_mtime));
1428         }
1429
1430         fputs(from_line, dest_fp);
1431
1432         while (1) {
1433                 n_read = fread(buf, 1, sizeof(buf), src_fp);
1434                 if ((n_read < (gint) sizeof(buf)) && ferror(src_fp))
1435                         break;
1436                 if (fwrite(buf, n_read, 1, dest_fp) < 1) {
1437                         mbox_unlock_file(dest_fp, mbox_path);
1438                         g_warning(_("writing to %s failed.\n"), mbox_path);
1439                         ftruncate(fileno(dest_fp), old_size);
1440                         fclose(dest_fp);
1441                         fclose(src_fp);
1442                         g_free(mbox_path);
1443                         return -1;
1444                 }
1445
1446                 if (n_read < (gint) sizeof(buf))
1447                         break;
1448         }
1449
1450         err = FALSE;
1451
1452         if (ferror(src_fp)) {
1453                 FILE_OP_ERROR(mbox_path, "fread");
1454         }
1455
1456         mbox_unlock_file(dest_fp, mbox_path);
1457
1458         if (fclose(src_fp) == -1) {
1459                 FILE_OP_ERROR(file, "fclose");
1460                 err = TRUE;
1461         }
1462
1463         if (fclose(dest_fp) == -1) {
1464                 FILE_OP_ERROR(mbox_path, "fclose");
1465                 g_free(mbox_path);
1466                 return -1;
1467         }
1468
1469         if (err) {
1470                 ftruncate(fileno(dest_fp), old_size);
1471                 g_free(mbox_path);
1472                 return -1;
1473         }
1474
1475         if (remove_source) {
1476                 if (unlink(file) < 0)
1477                         FILE_OP_ERROR(file, "unlink");
1478         }
1479
1480         g_free(mbox_path);
1481
1482         dest->last_num++;
1483         return dest->last_num;
1484
1485 }
1486
1487 gint mbox_remove_msg(Folder *folder, FolderItem *item, gint num)
1488 {
1489         struct _message * msg;
1490         gchar * mbox_path;
1491
1492         mbox_path = mbox_folder_get_path(item);
1493         if (mbox_path == NULL)
1494                 return -1;
1495
1496         mbox_cache_synchronize(mbox_path, TRUE);
1497
1498         msg = mbox_cache_get_msg(mbox_path, num);
1499
1500         g_free(mbox_path);
1501
1502         if (msg != NULL)
1503                 MSG_SET_PERM_FLAGS(msg->flags, MSG_REALLY_DELETED);
1504
1505         return 0;
1506 }
1507
1508 gint mbox_remove_all_msg(Folder *folder, FolderItem *item)
1509 {
1510         FILE * fp;
1511         gchar * mbox_path;
1512
1513         mbox_path = mbox_folder_get_path(item);
1514         if (mbox_path == NULL)
1515                 return -1;
1516
1517         fp = fopen(mbox_path, "wb");
1518         if (fp == NULL) {
1519                 g_free(mbox_path);
1520                 return -1;
1521         }
1522
1523         fclose(fp);
1524
1525         g_free(mbox_path);
1526
1527         return 0;
1528 }
1529
1530 /*
1531 gint mbox_move_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
1532 {
1533         gchar * filename;
1534         gint msgnum;
1535
1536         filename = mbox_fetch_msg(folder, msginfo->folder, msginfo->msgnum);
1537         if (filename == NULL)
1538                 return -1;
1539
1540         msgnum = mbox_add_msg(folder, dest, filename, TRUE);
1541
1542         if (msgnum != -1) {
1543                 MSG_SET_FLAGS(msginfo->flags, MSG_REALLY_DELETED);
1544                 mbox_change_flags(folder, msginfo->folder, msginfo);
1545         }
1546
1547         return msgnum;
1548 }
1549
1550 gint mbox_move_msgs_with_dest(Folder *folder, FolderItem *dest, GSList *msglist)
1551 {
1552         GSList * l;
1553         gchar * mbox_path = NULL;
1554
1555         for(l = msglist ; l != NULL ; l = g_slist_next(l)) {
1556                 MsgInfo * msginfo = (MsgInfo *) l->data;
1557
1558                 if (msginfo->folder && mbox_path == NULL)
1559                         mbox_path = mbox_folder_get_path(msginfo->folder);
1560
1561                 mbox_move_msg(folder, dest, msginfo);
1562         }
1563
1564         if (mbox_path) {
1565                 mbox_cache_synchronize(mbox_path);
1566                 g_free(mbox_path);
1567         }
1568
1569         mbox_path = mbox_folder_get_path(dest);
1570         mbox_cache_synchronize(mbox_path);
1571         g_free(mbox_path);
1572
1573         return dest->last_num;
1574 }
1575 */
1576
1577 /*
1578 gint mbox_copy_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
1579 {
1580         gchar * filename;
1581         gint msgnum;
1582
1583         filename = mbox_fetch_msg(folder, msginfo->folder, msginfo->msgnum);
1584         if (filename == NULL)
1585                 return -1;
1586
1587         msgnum = mbox_add_msg(folder, dest, filename, FALSE);
1588
1589         return msgnum;
1590 }
1591
1592 gint mbox_copy_msgs_with_dest(Folder *folder, FolderItem *dest, GSList *msglist)
1593 {
1594         GSList * l;
1595         gchar * mbox_path = NULL;
1596
1597         for(l = msglist ; l != NULL ; l = g_slist_next(l)) {
1598                 MsgInfo * msginfo = (MsgInfo *) l->data;
1599
1600                 if (msginfo->folder && mbox_path == NULL)
1601                         mbox_path = mbox_folder_get_path(msginfo->folder);
1602
1603                 mbox_copy_msg(folder, dest, msginfo);
1604         }
1605
1606         if (mbox_path) {
1607                 mbox_cache_synchronize(mbox_path);
1608                 g_free(mbox_path);
1609         }
1610
1611         mbox_path = mbox_folder_get_path(dest);
1612         mbox_cache_synchronize(mbox_path);
1613         g_free(mbox_path);
1614
1615         return dest->last_num;
1616 }
1617 */
1618
1619 struct _copy_flags_info
1620 {
1621         gint num;
1622         MsgFlags flags;
1623 };
1624
1625 typedef struct _copy_flags_info CopyFlagsInfo;
1626
1627 GSList * copy_flags_data = NULL;
1628
1629 gint mbox_copy_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
1630 {
1631         Folder * src_folder;
1632         gchar * filename;
1633         gint num;
1634         CopyFlagsInfo * flags_info;
1635
1636         src_folder = msginfo->folder->folder;
1637
1638         g_return_val_if_fail(src_folder->fetch_msg != NULL, -1);
1639
1640         /*
1641         mbox_path = mbox_folder_get_path(msginfo->folder);
1642         mbox_rewrite(mbox_path);
1643         g_free(mbox_path);
1644         */
1645
1646         filename = src_folder->fetch_msg(src_folder,
1647                                          msginfo->folder,
1648                                          msginfo->msgnum);
1649         if (filename == NULL)
1650                 return -1;
1651
1652         num = folder->add_msg(folder, dest, filename, FALSE);
1653
1654         /*
1655         mbox_path = mbox_folder_get_path(dest);
1656         msg = mbox_cache_get_msg(mbox_path, num);
1657         if (msg != NULL)
1658                 msg->flags = msginfo->flags;
1659         g_free(mbox_path);
1660         */
1661
1662         if (num == -1)
1663                 return -1;
1664
1665         flags_info = g_new0(CopyFlagsInfo, 1);
1666         flags_info->num = num;
1667         flags_info->flags = msginfo->flags;
1668         copy_flags_data = g_slist_append(copy_flags_data, flags_info);
1669
1670         return num;
1671 }
1672
1673 void mbox_finished_copy(Folder *folder, FolderItem *dest)
1674 {
1675         gchar * mbox_path;
1676         GSList * l;
1677         mboxcache * cache;
1678
1679         mbox_path = mbox_folder_get_path(dest);
1680         if (mbox_path == NULL)
1681                 return;
1682
1683         mbox_cache_synchronize(mbox_path, TRUE);
1684
1685         for(l = copy_flags_data ; l != NULL ; l = g_slist_next(l)) {
1686                 CopyFlagsInfo * flags_info = l->data;
1687                 struct _message * msg;
1688
1689                 msg = mbox_cache_get_msg(mbox_path, flags_info->num);
1690                 if (msg != NULL)
1691                         msg->flags = flags_info->flags;
1692                 g_free(flags_info);
1693         }
1694
1695         if (copy_flags_data != NULL) {
1696                 cache = mbox_cache_get_mbox(mbox_path);
1697                 cache->modification = TRUE;
1698         }
1699
1700         g_slist_free(copy_flags_data);
1701         copy_flags_data = NULL;
1702
1703         mbox_rewrite(mbox_path);
1704
1705         g_free(mbox_path);
1706 }
1707
1708 void mbox_scan_folder(Folder *folder, FolderItem *item)
1709 {
1710         gchar *mbox_path;
1711         gint n_msg;
1712         mboxcache * cached;
1713         GList * l;
1714
1715         mbox_path = mbox_folder_get_path(item);
1716         if (mbox_path == NULL)
1717                 return;
1718
1719         mbox_cache_synchronize(mbox_path, TRUE);
1720
1721         cached = mbox_cache_get_mbox(mbox_path);
1722
1723         if (cached == NULL) {
1724                 item->new = 0;
1725                 item->unread = 0;
1726                 item->total = 0;
1727                 item->last_num = 0;
1728                 g_free(mbox_path);
1729                 return;
1730         }
1731
1732         n_msg = mbox_cache_get_count(mbox_path);
1733
1734         if (n_msg == 0) {
1735                 item->new = item->unread = item->total = 0;
1736         }
1737         else {
1738                 gint new = 0;
1739                 gint unread = 0;
1740                 gint total = 0;
1741
1742                 for(l = mbox_cache_get_msg_list(mbox_path) ; l != NULL ;
1743                     l = g_list_next(l)) {
1744                         struct _message * msg = (struct _message *) l->data;
1745                         if (!MSG_IS_REALLY_DELETED(msg->flags))
1746                                 total ++;
1747                         if (MSG_IS_NEW(msg->flags) && !MSG_IS_IGNORE_THREAD(msg->flags))
1748                                 new ++;
1749                         if (MSG_IS_UNREAD(msg->flags) && !MSG_IS_IGNORE_THREAD(msg->flags))
1750                                 unread ++;
1751                 }
1752
1753                 item->new = new;
1754                 item->unread = unread;
1755                 item->total = total;
1756         }
1757
1758         debug_print("Last number in dir %s = %d\n", mbox_path,
1759                     item->total);
1760         item->last_num = n_msg;
1761         g_free(mbox_path);
1762 }
1763
1764 gchar * mbox_get_virtual_path(FolderItem * item)
1765 {
1766         if (item == NULL)
1767                 return NULL;
1768
1769         if (item->parent == NULL) {
1770                 return NULL;
1771         }
1772         else {
1773                 gchar * parent_path;
1774                 gchar * result_path;
1775
1776                 parent_path = mbox_get_virtual_path(item->parent);
1777                 if (parent_path == NULL)
1778                         result_path = g_strdup(item->name);
1779                 else
1780                         result_path = g_strconcat(parent_path,
1781                                                   G_DIR_SEPARATOR_S,
1782                                                   item->name, NULL);
1783                 g_free(parent_path);
1784
1785                 return result_path;
1786         }
1787 }
1788
1789 static gboolean mbox_write_data(FILE * mbox_fp, FILE * new_fp,
1790                                 gchar * new_filename, gint size)
1791 {
1792         gint n_read;
1793         gint pos;
1794         gchar buf[BUFSIZ];
1795         gint max;
1796
1797         pos = 0;
1798         while (pos < size) {
1799                 if ((size - pos) > (gint) sizeof(buf))
1800                         max = sizeof(buf);
1801                 else
1802                         max = (size - pos);
1803
1804                 n_read = fread(buf, 1, max, mbox_fp);
1805
1806                 if (n_read < max && ferror(mbox_fp)) {
1807                         return FALSE;
1808                 }
1809                 if (fwrite(buf, n_read, 1, new_fp) < 1) {
1810                         g_warning(_("writing to %s failed.\n"), new_filename);
1811                         return FALSE;
1812                 }
1813
1814                 if (n_read != -1)
1815                         pos += n_read;
1816
1817                 if (n_read < max)
1818                         break;
1819         }
1820         return TRUE;
1821 }
1822
1823 static gboolean mbox_write_message(FILE * mbox_fp, FILE * new_fp,
1824                                    gchar * new_filename,
1825                                    struct _message * msg)
1826 {
1827         gint size;
1828         GPtrArray * headers;
1829         gint i;
1830
1831         fseek(mbox_fp, msg->header, SEEK_SET);
1832
1833         headers = procheader_get_header_array_asis(mbox_fp);
1834
1835         for (i = 0; i < (gint) headers->len; i++) {
1836                 Header * h = g_ptr_array_index(headers, i);
1837
1838                 if (!procheader_headername_equal(h->name,
1839                                                  "Status") &&
1840                     !procheader_headername_equal(h->name,
1841                                                  "X-Status")) {
1842                         fwrite(h->name, strlen(h->name),
1843                                1, new_fp);
1844                         if (h->name[strlen(h->name) - 1] != ' ')
1845                                 fwrite(" ", 1, 1, new_fp);
1846                         fwrite(h->body, strlen(h->body),
1847                                1, new_fp);
1848                         fwrite("\n", 1, 1, new_fp);
1849                 }
1850                 procheader_header_free(h);
1851                 g_ptr_array_remove_index(headers, i);
1852                 i--;
1853         }
1854
1855         g_ptr_array_free(headers, FALSE);
1856
1857         if (!MSG_IS_INVALID(msg->flags)) {
1858                 /* Status header */
1859                 fwrite("Status: ", strlen("Status: "), 1, new_fp);
1860                 if (!MSG_IS_UNREAD(msg->flags))
1861                         fwrite("R", 1, 1, new_fp);
1862                 fwrite("O", 1, 1, new_fp);
1863                 fwrite("\n", 1, 1, new_fp);
1864
1865                 /* X-Status header */
1866                 if (MSG_IS_REALLY_DELETED(msg->flags)
1867                 ||  MSG_IS_MARKED(msg->flags)
1868                 ||  MSG_IS_DELETED(msg->flags)
1869                 ||  MSG_IS_REPLIED(msg->flags)
1870                 ||  MSG_IS_FORWARDED(msg->flags)) {
1871                         fwrite("X-Status: ", strlen("X-Status: "), 1, new_fp);
1872                         if (MSG_IS_REALLY_DELETED(msg->flags))
1873                                 fwrite("D", 1, 1, new_fp); /* really deleted */
1874                         else {
1875                                 if (MSG_IS_MARKED(msg->flags))
1876                                         fwrite("F", 1, 1, new_fp);
1877                                 if (MSG_IS_DELETED(msg->flags))
1878                                         fwrite("d", 1, 1, new_fp);
1879                                 if (MSG_IS_REPLIED(msg->flags))
1880                                         fwrite("r", 1, 1, new_fp);
1881                                 if (MSG_IS_FORWARDED(msg->flags))
1882                                         fwrite("f", 1, 1, new_fp);
1883                         }
1884                         fwrite("\n", 1, 1, new_fp);
1885                 }
1886         }
1887
1888         fwrite("\n", 1, 1, new_fp);
1889
1890         size = msg->end - msg->content;
1891         fseek(mbox_fp, msg->content, SEEK_SET);
1892
1893         return mbox_write_data(mbox_fp, new_fp, new_filename, size);
1894 }
1895
1896 void mbox_update_mark(Folder * folder, FolderItem * item)
1897 {
1898         gchar * mbox_path;
1899
1900         mbox_path = mbox_folder_get_path(item);
1901         if (mbox_path == NULL)
1902                 return;
1903
1904         mbox_rewrite(mbox_path);
1905         g_free(mbox_path);
1906 }
1907
1908 void mbox_change_flags(Folder * folder, FolderItem * item, MsgInfo * info)
1909 {
1910         struct _message * msg;
1911         mboxcache * cache;
1912         gchar * mbox_path;
1913
1914         mbox_path = mbox_folder_get_path(item);
1915         if (mbox_path == NULL)
1916                 return;
1917
1918         msg = mbox_cache_get_msg(mbox_path, info->msgnum);
1919
1920         cache = mbox_cache_get_mbox(mbox_path);
1921
1922         g_free(mbox_path);
1923
1924         if ((msg == NULL) || (cache == NULL))
1925                 return;
1926
1927         msg->flags = info->flags;
1928
1929         cache->modification = TRUE;
1930 }
1931
1932
1933 static gboolean mbox_rewrite(gchar * mbox)
1934 {
1935         FILE * mbox_fp;
1936         FILE * new_fp;
1937         gchar * new;
1938         GList * l;
1939         gboolean result;
1940         GList * msg_list;
1941         gint count;
1942         mboxcache * cache;
1943
1944         msg_list = mbox_cache_get_msg_list(mbox);
1945
1946         cache = mbox_cache_get_mbox(mbox);
1947         if (cache == NULL)
1948                 return FALSE;
1949
1950         if (!cache->modification) {
1951                 debug_print("no modification - %s\n", mbox);
1952                 return FALSE;
1953         }
1954
1955         debug_print("save modification - %s\n", mbox);
1956
1957         mbox_fp = fopen(mbox, "rb+");
1958         mbox_lockwrite_file(mbox_fp, mbox);
1959
1960         mbox_cache_synchronize_from_file(mbox_fp, mbox, TRUE);
1961
1962         new = g_strconcat(mbox, ".", itos((int) mbox), NULL);
1963         new_fp = fopen(new, "wb");
1964
1965         if (change_file_mode_rw(new_fp, new) < 0) {
1966                 FILE_OP_ERROR(new, "chmod");
1967                 g_warning(_("can't change file mode\n"));
1968         }
1969
1970         mbox_lockwrite_file(new_fp, new);
1971
1972         result = TRUE;
1973
1974         count = 0;
1975         msg_list = mbox_cache_get_msg_list(mbox);
1976         for(l = msg_list ; l != NULL ; l = g_list_next(l)) {
1977                 struct _message * msg = (struct _message *) l->data;
1978                 if (!mbox_write_message(mbox_fp, new_fp, new, msg)) {
1979                         result = FALSE;
1980                         break;
1981                 }
1982                 count ++;
1983         }
1984
1985         unlink(mbox);
1986
1987         if (rename(new, mbox) == -1) {
1988                 g_warning(_("can't rename %s to %s\n"), new, mbox);
1989                 mbox_unlock_file(new_fp, new);
1990                 fclose(new_fp);
1991                 mbox_unlock_file(mbox_fp, mbox);
1992                 fclose(mbox_fp);
1993                 return -1;
1994         }
1995
1996         if (change_file_mode_rw(new_fp, mbox) < 0) {
1997                 FILE_OP_ERROR(new, "chmod");
1998                 g_warning(_("can't change file mode\n"));
1999         }
2000
2001         mbox_unlock_file(new_fp, new);
2002
2003         fclose(new_fp);
2004
2005         mbox_unlock_file(mbox_fp, mbox);
2006
2007         fclose(mbox_fp);
2008
2009         debug_print("%i messages written - %s\n", count, mbox);
2010
2011         cache = mbox_cache_get_mbox(mbox);
2012
2013         if (cache != NULL)
2014                 cache->mtime = -1;
2015
2016         mbox_cache_synchronize(mbox, FALSE);
2017
2018         return result;
2019 }
2020
2021 static gboolean mbox_purge_deleted(gchar * mbox)
2022 {
2023         FILE * mbox_fp;
2024         FILE * new_fp;
2025         gchar * new;
2026         GList * l;
2027         gboolean result;
2028         gboolean modification = FALSE;
2029         GList * msg_list;
2030         gint count;
2031
2032         mbox_cache_synchronize(mbox, TRUE);
2033
2034         msg_list = mbox_cache_get_msg_list(mbox);
2035
2036         for(l = msg_list ; l != NULL ; l = g_list_next(l)) {
2037                 struct _message * msg = (struct _message *) l->data;
2038                 if (!MSG_IS_INVALID(msg->flags) && MSG_IS_REALLY_DELETED(msg->flags)) {
2039                         modification = TRUE;
2040                         break;
2041                 }
2042         }
2043
2044         if (!modification) {
2045                 debug_print("no deleted messages - %s\n", mbox);
2046                 return FALSE;
2047         }
2048
2049         debug_print("purge deleted messages - %s\n", mbox);
2050
2051         mbox_fp = fopen(mbox, "rb+");
2052         mbox_lockwrite_file(mbox_fp, mbox);
2053
2054         mbox_cache_synchronize_from_file(mbox_fp, mbox, TRUE);
2055
2056         new = g_strconcat(mbox, ".", itos((int) mbox), NULL);
2057         new_fp = fopen(new, "wb");
2058
2059         if (change_file_mode_rw(new_fp, new) < 0) {
2060                 FILE_OP_ERROR(new, "chmod");
2061                 g_warning(_("can't change file mode\n"));
2062         }
2063
2064         mbox_lockwrite_file(new_fp, new);
2065
2066         result = TRUE;
2067
2068         count = 0;
2069         msg_list = mbox_cache_get_msg_list(mbox);
2070         for(l = msg_list ; l != NULL ; l = g_list_next(l)) {
2071                 struct _message * msg = (struct _message *) l->data;
2072                 if (MSG_IS_INVALID(msg->flags) || !MSG_IS_REALLY_DELETED(msg->flags)) {
2073                         if (!mbox_write_message(mbox_fp, new_fp, new, msg)) {
2074                                 result = FALSE;
2075                                 break;
2076                         }
2077                         count ++;
2078                 }
2079         }
2080
2081         unlink(mbox);
2082
2083         if (rename(new, mbox) == -1) {
2084                 g_warning(_("can't rename %s to %s\n"), new, mbox);
2085                 mbox_unlock_file(new_fp, new);
2086                 fclose(new_fp);
2087                 mbox_unlock_file(mbox_fp, mbox);
2088                 fclose(mbox_fp);
2089                 return -1;
2090         }
2091
2092         if (change_file_mode_rw(new_fp, mbox) < 0) {
2093                 FILE_OP_ERROR(new, "chmod");
2094                 g_warning(_("can't change file mode\n"));
2095         }
2096
2097         mbox_unlock_file(new_fp, new);
2098
2099         fclose(new_fp);
2100
2101         mbox_unlock_file(mbox_fp, mbox);
2102
2103         fclose(mbox_fp);
2104
2105         debug_print("%i messages written - %s\n", count, mbox);
2106
2107         mbox_cache_synchronize(mbox, FALSE);
2108
2109         return result;
2110 }
2111
2112 #define MAKE_DIR_IF_NOT_EXIST(dir) \
2113 { \
2114         if (!is_dir_exist(dir)) { \
2115                 if (is_file_exist(dir)) { \
2116                         g_warning(_("File `%s' already exists.\n" \
2117                                     "Can't create folder."), dir); \
2118                         return -1; \
2119                 } \
2120                 if (mkdir(dir, S_IRWXU) < 0) { \
2121                         FILE_OP_ERROR(dir, "mkdir"); \
2122                         return -1; \
2123                 } \
2124                 if (chmod(dir, S_IRWXU) < 0) \
2125                         FILE_OP_ERROR(dir, "chmod"); \
2126         } \
2127 }
2128
2129 gint mbox_create_tree(Folder *folder)
2130 {
2131         gchar *rootpath;
2132
2133         g_return_val_if_fail(folder != NULL, -1);
2134
2135         CHDIR_RETURN_VAL_IF_FAIL(get_home_dir(), -1);
2136         rootpath = LOCAL_FOLDER(folder)->rootpath;
2137         MAKE_DIR_IF_NOT_EXIST(rootpath);
2138         CHDIR_RETURN_VAL_IF_FAIL(rootpath, -1);
2139
2140         return 0;
2141 }
2142
2143 #undef MAKE_DIR_IF_NOT_EXIST
2144
2145 static gchar * mbox_get_new_path(FolderItem * parent, gchar * name)
2146 {
2147         gchar * path;
2148
2149         if (strchr(name, '/') == NULL) {
2150                 if (parent->path != NULL)
2151                         path = g_strconcat(parent->path, ".sbd", G_DIR_SEPARATOR_S, name, NULL);
2152                 else
2153                         path = g_strdup(name);
2154         }
2155         else
2156                 path = g_strdup(name);
2157
2158         return path;
2159 }
2160
2161 static gchar * mbox_get_folderitem_name(gchar * name)
2162 {
2163         gchar * foldername;
2164
2165         foldername = g_strdup(g_basename(name));
2166
2167         return foldername;
2168 }
2169
2170 FolderItem *mbox_create_folder(Folder *folder, FolderItem *parent,
2171                                const gchar *name)
2172 {
2173         gchar * path;
2174         FolderItem *new_item;
2175         gchar * foldername;
2176
2177         g_return_val_if_fail(folder != NULL, NULL);
2178         g_return_val_if_fail(parent != NULL, NULL);
2179         g_return_val_if_fail(name != NULL, NULL);
2180
2181         path = mbox_get_new_path(parent, (gchar *) name);
2182
2183         foldername = mbox_get_folderitem_name((gchar *) name);
2184
2185         new_item = folder_item_new(folder, foldername, path);
2186         folder_item_append(parent, new_item);
2187
2188         if (!strcmp(name, "inbox")) {
2189                 new_item->stype = F_INBOX;
2190                 new_item->folder->inbox = new_item;
2191         } else if (!strcmp(name, "outbox")) {
2192                 new_item->stype = F_OUTBOX;
2193                 new_item->folder->outbox = new_item;
2194         } else if (!strcmp(name, "draft")) {
2195                 new_item->stype = F_DRAFT;
2196                 new_item->folder->draft = new_item;
2197         } else if (!strcmp(name, "queue")) {
2198                 new_item->stype = F_QUEUE;
2199                 new_item->folder->queue = new_item;
2200         } else if (!strcmp(name, "trash")) {
2201                 new_item->stype = F_TRASH;
2202                 new_item->folder->trash = new_item;
2203         }
2204
2205         g_free(foldername);
2206         g_free(path);
2207
2208         return new_item;
2209 }
2210
2211 gint mbox_rename_folder(Folder *folder, FolderItem *item, const gchar *name)
2212 {
2213         gchar * path;
2214         gchar * foldername;
2215
2216         g_return_val_if_fail(folder != NULL, -1);
2217         g_return_val_if_fail(item != NULL, -1);
2218         g_return_val_if_fail(item->path != NULL, -1);
2219         g_return_val_if_fail(name != NULL, -1);
2220
2221         path = mbox_get_new_path(item->parent, (gchar *) name);
2222         foldername = mbox_get_folderitem_name((gchar *) name);
2223
2224         if (rename(item->path, path) == -1) {
2225                 g_free(foldername);
2226                 g_free(path);
2227                 g_warning(_("Cannot rename folder item"));
2228
2229                 return -1;
2230         }
2231         else {
2232                 g_free(item->name);
2233                 g_free(item->path);
2234                 item->path = path;
2235                 item->name = foldername;
2236
2237                 return 0;
2238         }
2239 }
2240
2241 gint mbox_remove_folder(Folder *folder, FolderItem *item)
2242 {
2243         g_return_val_if_fail(folder != NULL, -1);
2244         g_return_val_if_fail(item != NULL, -1);
2245         g_return_val_if_fail(item->path != NULL, -1);
2246
2247         folder_item_remove(item);
2248         return 0;
2249 }
2250
2251 GSList *mbox_get_num_list(Folder *folder, FolderItem *item)
2252 {
2253         GSList *mlist;
2254         GList * l;
2255         FILE * fp;
2256         gchar * mbox_path;
2257
2258         mlist = NULL;
2259
2260         mbox_path = mbox_folder_get_path(item);
2261
2262         if (mbox_path == NULL)
2263                 return NULL;
2264
2265         mbox_purge_deleted(mbox_path);
2266
2267         fp = fopen(mbox_path, "rb");
2268
2269         if (fp == NULL) {
2270                 g_free(mbox_path);
2271                 return NULL;
2272         }
2273
2274         mbox_lockread_file(fp, mbox_path);
2275
2276         mbox_cache_synchronize_from_file(fp, mbox_path, TRUE);
2277
2278         item->last_num = mbox_cache_get_count(mbox_path);
2279
2280         for(l = mbox_cache_get_msg_list(mbox_path) ; l != NULL ;
2281             l = g_list_next(l)) {
2282                 struct _message * msg;
2283
2284                 msg = (struct _message *) l->data;
2285
2286                 if (MSG_IS_INVALID(msg->flags) || !MSG_IS_REALLY_DELETED(msg->flags)) {
2287                         mlist = g_slist_append(mlist, GINT_TO_POINTER(msg->msgnum));
2288                 } else {
2289                         MSG_SET_PERM_FLAGS(msg->flags, MSG_REALLY_DELETED);
2290                 }
2291         }
2292
2293         mbox_unlock_file(fp, mbox_path);
2294
2295         g_free(mbox_path);
2296
2297         fclose(fp);
2298
2299         return mlist;
2300 }
2301
2302 MsgInfo *mbox_fetch_msginfo(Folder *folder, FolderItem *item, gint num)
2303 {
2304         gchar *mbox_path;
2305         struct _message *msg;
2306         FILE *src;
2307         MsgInfo *msginfo;
2308
2309         g_return_val_if_fail(folder != NULL, NULL);
2310         g_return_val_if_fail(item != NULL, NULL);
2311
2312         mbox_path = mbox_folder_get_path(item);
2313
2314         g_return_val_if_fail(mbox_path != NULL, NULL);
2315
2316         src = fopen(mbox_path, "rb");
2317         if (src == NULL) {
2318                 g_free(mbox_path);
2319                 return NULL;
2320         }
2321         mbox_lockread_file(src, mbox_path);
2322         mbox_cache_synchronize_from_file(src, mbox_path, TRUE);
2323
2324         msg = mbox_cache_get_msg(mbox_path, num);
2325         if (msg == NULL) {
2326                 mbox_unlock_file(src, mbox_path);
2327                 fclose(src);
2328                 g_free(mbox_path);
2329                 return NULL;
2330         }
2331
2332         fseek(src, msg->header, SEEK_SET);
2333         msginfo = mbox_parse_msg(src, msg, item);
2334
2335         mbox_unlock_file(src, mbox_path);
2336         fclose(src);
2337         g_free(mbox_path);
2338
2339         return msginfo;
2340 }
2341
2342 gboolean mbox_check_msgnum_validity(Folder *folder, FolderItem *item)
2343 {
2344         mboxcache * old_cache;
2345         gboolean scan_new = TRUE;
2346         struct stat s;
2347         gchar *filename;
2348
2349         filename = mbox_folder_get_path(item);
2350
2351         old_cache = mbox_cache_get_mbox(filename);
2352
2353         if (old_cache != NULL) {
2354                 if (stat(filename, &s) < 0) {
2355                         FILE_OP_ERROR(filename, "stat");
2356                 } else if (old_cache->mtime == s.st_mtime) {
2357                         debug_print("Folder is not modified.\n");
2358                         scan_new = FALSE;
2359                 }
2360         }
2361
2362         g_free(filename);
2363
2364         return !scan_new;
2365 }
2366