src/imap.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2014 Hiroyuki Yamamoto and the Claws Mail team
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 3 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #include "claws-features.h"
  23 #endif
  24
  25 #include "defs.h"
  26
  27 #include <glib.h>
  28 #include <glib/gi18n.h>
  29 #include <stdio.h>
  30 #include <string.h>
  31 #include "imap.h"
  32 #include "imap_gtk.h"
  33 #include "inc.h"
  34 #include "xml.h"
  35 #include "alertpanel.h"
  36
  37 #ifdef HAVE_LIBETPAN
  38
  39 #include <stdlib.h>
  40 #include <dirent.h>
  41 #include <unistd.h>
  42 #include <ctype.h>
  43 #include <time.h>
  44 #include <errno.h>
  45 #if HAVE_ICONV
  46 #  include <iconv.h>
  47 #endif
  48
  49 #ifdef USE_GNUTLS
  50 #  include "ssl.h"
  51 #endif
  52
  53 #include "folder.h"
  54 #include "session.h"
  55 #include "procmsg.h"
  56 #include "socket.h"
  57 #include "recv.h"
  58 #include "procheader.h"
  59 #include "prefs_account.h"
  60 #include "codeconv.h"
  61 #include "md5.h"
  62 #include "utils.h"
  63 #include "prefs_common.h"
  64 #include "inputdialog.h"
  65 #include "log.h"
  66 #include "remotefolder.h"
  67 #include "claws.h"
  68 #include "statusbar.h"
  69 #include "msgcache.h"
  70 #include "imap-thread.h"
  71 #include "account.h"
  72 #include "tags.h"
  73 #include "main.h"
  74 #include "passwordstore.h"
  75
  76 typedef struct _IMAPFolder      IMAPFolder;
  77 typedef struct _IMAPSession     IMAPSession;
  78 typedef struct _IMAPNameSpace   IMAPNameSpace;
  79 typedef struct _IMAPFolderItem  IMAPFolderItem;
  80
  81 #include "prefs_account.h"
  82
  83 #define IMAP_FOLDER(obj)        ((IMAPFolder *)obj)
  84 #define IMAP_FOLDER_ITEM(obj)   ((IMAPFolderItem *)obj)
  85 #define IMAP_SESSION(obj)       ((IMAPSession *)obj)
  86
  87 struct _IMAPFolder
  88 {
  89         RemoteFolder rfolder;
  90
  91         /* list of IMAPNameSpace */
  92         GList *ns_personal;
  93         GList *ns_others;
  94         GList *ns_shared;
  95         gchar last_seen_separator;
  96         guint refcnt;
  97         guint max_set_size;
  98         gchar *search_charset;
  99         gboolean search_charset_supported;
 100 };
 101
 102 struct _IMAPSession
 103 {
 104         Session session;
 105
 106         gboolean authenticated;
 107
 108         GSList *capability;
 109         gboolean uidplus;
 110
 111         gchar *mbox;
 112         guint cmd_count;
 113
 114         /* CLAWS */
 115         gboolean folder_content_changed;
 116         guint exists;
 117         guint recent;
 118         guint expunge;
 119         guint unseen;
 120         guint uid_validity;
 121         guint uid_next;
 122
 123         Folder * folder;
 124         gboolean busy;
 125         gboolean cancelled;
 126         gboolean sens_update_block;
 127         gboolean do_destroy;
 128 };
 129
 130 struct _IMAPNameSpace
 131 {
 132         gchar *name;
 133         gchar separator;
 134 };
 135
 136 #define IMAPBUFSIZE     8192
 137
 138 #define IMAP_IS_SEEN(flags)     ((flags & IMAP_FLAG_SEEN) != 0)
 139 #define IMAP_IS_ANSWERED(flags) ((flags & IMAP_FLAG_ANSWERED) != 0)
 140 #define IMAP_IS_FLAGGED(flags)  ((flags & IMAP_FLAG_FLAGGED) != 0)
 141 #define IMAP_IS_DELETED(flags)  ((flags & IMAP_FLAG_DELETED) != 0)
 142 #define IMAP_IS_DRAFT(flags)    ((flags & IMAP_FLAG_DRAFT) != 0)
 143 #define IMAP_IS_FORWARDED(flags)        ((flags & IMAP_FLAG_FORWARDED) != 0)
 144 #define IMAP_IS_SPAM(flags)     ((flags & IMAP_FLAG_SPAM) != 0)
 145 #define IMAP_IS_HAM(flags)      ((flags & IMAP_FLAG_HAM) != 0)
 146
 147
 148 #define IMAP4_PORT      143
 149 #ifdef USE_GNUTLS
 150 #define IMAPS_PORT      993
 151 #endif
 152
 153 #define IMAP_CMD_LIMIT  1000
 154
 155 enum {
 156         ITEM_CAN_CREATE_FLAGS_UNKNOWN = 0,
 157         ITEM_CAN_CREATE_FLAGS,
 158         ITEM_CANNOT_CREATE_FLAGS
 159 };
 160
 161 struct _IMAPFolderItem
 162 {
 163         FolderItem item;
 164
 165         guint lastuid;
 166         guint uid_next;
 167         GSList *uid_list;
 168         gboolean batching;
 169
 170         GHashTable *flags_set_table;
 171         GHashTable *flags_unset_table;
 172         guint32 last_change;
 173         guint32 last_sync;
 174         gboolean should_update;
 175         gboolean should_trash_cache;
 176         gint can_create_flags;
 177
 178         GHashTable *tags_set_table;
 179         GHashTable *tags_unset_table;
 180         GSList *ok_flags;
 181
 182 };
 183
 184 static XMLTag *imap_item_get_xml(Folder *folder, FolderItem *item);
 185 static void imap_item_set_xml(Folder *folder, FolderItem *item, XMLTag *tag);
 186
 187 static void imap_folder_init            (Folder         *folder,
 188                                          const gchar    *name,
 189                                          const gchar    *path);
 190
 191 static Folder   *imap_folder_new        (const gchar    *name,
 192                                          const gchar    *path);
 193 static void      imap_folder_destroy    (Folder         *folder);
 194
 195 static IMAPSession *imap_session_new    (Folder         *folder,
 196                                          const PrefsAccount     *account);
 197 static gint     imap_session_authenticate(IMAPSession   *session,
 198                                           PrefsAccount  *account);
 199 static void     imap_session_destroy    (Session        *session);
 200
 201 static gchar   *imap_fetch_msg          (Folder         *folder,
 202                                          FolderItem     *item,
 203                                          gint            uid);
 204 static gchar   *imap_fetch_msg_full     (Folder         *folder,
 205                                          FolderItem     *item,
 206                                          gint            uid,
 207                                          gboolean        headers,
 208                                          gboolean        body);
 209 static void     imap_remove_cached_msg  (Folder         *folder,
 210                                          FolderItem     *item,
 211                                          MsgInfo        *msginfo);
 212 static gint     imap_add_msg            (Folder         *folder,
 213                                          FolderItem     *dest,
 214                                          const gchar    *file,
 215                                          MsgFlags       *flags);
 216 static gint     imap_add_msgs           (Folder         *folder,
 217                                          FolderItem     *dest,
 218                                          GSList         *file_list,
 219                                          GHashTable     *relation);
 220
 221 static gint     imap_copy_msg           (Folder         *folder,
 222                                          FolderItem     *dest,
 223                                          MsgInfo        *msginfo);
 224 static gint     imap_copy_msgs          (Folder         *folder,
 225                                          FolderItem     *dest,
 226                                          MsgInfoList    *msglist,
 227                                          GHashTable     *relation);
 228
 229 static gint     search_msgs             (Folder                 *folder,
 230                                          FolderItem             *container,
 231                                          MsgNumberList          **msgs,
 232                                          gboolean               *on_server,
 233                                          MatcherList            *predicate,
 234                                          SearchProgressNotify   progress_cb,
 235                                          gpointer               progress_data);
 236
 237 static gint     imap_remove_msg         (Folder         *folder,
 238                                          FolderItem     *item,
 239                                          gint            uid);
 240 static gint     imap_remove_msgs        (Folder         *folder,
 241                                          FolderItem     *dest,
 242                                          MsgInfoList    *msglist,
 243                                          GHashTable     *relation);
 244 static gint     imap_expunge            (Folder         *folder,
 245                                          FolderItem     *dest);
 246 static gint     imap_remove_all_msg     (Folder         *folder,
 247                                          FolderItem     *item);
 248
 249 static gboolean imap_is_msg_changed     (Folder         *folder,
 250                                          FolderItem     *item,
 251                                          MsgInfo        *msginfo);
 252
 253 static gint     imap_close              (Folder         *folder,
 254                                          FolderItem     *item);
 255
 256 static gint     imap_scan_tree          (Folder         *folder);
 257
 258 static gint     imap_create_tree        (Folder         *folder);
 259
 260 static FolderItem *imap_create_folder   (Folder         *folder,
 261                                          FolderItem     *parent,
 262                                          const gchar    *name);
 263 static gint     imap_rename_folder      (Folder         *folder,
 264                                          FolderItem     *item,
 265                                          const gchar    *name);
 266 static gint     imap_remove_folder      (Folder         *folder,
 267                                          FolderItem     *item);
 268
 269 static FolderItem *imap_folder_item_new (Folder         *folder);
 270 static void imap_folder_item_destroy    (Folder         *folder,
 271                                          FolderItem     *item);
 272
 273 static IMAPSession *imap_session_get    (Folder         *folder);
 274
 275 static gint imap_auth                   (IMAPSession    *session,
 276                                          const gchar    *user,
 277                                          const gchar    *pass,
 278                                          IMAPAuthType    type);
 279
 280 static gint imap_scan_tree_recursive    (IMAPSession    *session,
 281                                          FolderItem     *item,
 282                                          gboolean        subs_only);
 283
 284 static void imap_create_missing_folders (Folder         *folder);
 285 static FolderItem *imap_create_special_folder
 286                                         (Folder                 *folder,
 287                                          SpecialFolderItemType   stype,
 288                                          const gchar            *name);
 289
 290 static gint imap_do_copy_msgs           (Folder         *folder,
 291                                          FolderItem     *dest,
 292                                          MsgInfoList    *msglist,
 293                                          GHashTable     *relation,
 294                                          gboolean        same_dest_ok);
 295
 296 static gint imap_do_remove_msgs         (Folder         *folder,
 297                                          FolderItem     *dest,
 298                                          MsgInfoList    *msglist,
 299                                          GHashTable     *relation);
 300
 301 static void imap_delete_all_cached_messages     (FolderItem     *item);
 302 static void imap_set_batch              (Folder         *folder,
 303                                          FolderItem     *item,
 304                                          gboolean        batch);
 305 static gint imap_set_message_flags      (IMAPSession    *session,
 306                                          IMAPFolderItem *item,
 307                                          MsgNumberList  *numlist,
 308                                          IMAPFlags       flags,
 309                                          GSList         *tags,
 310                                          gboolean        is_set);
 311 static gint imap_select                 (IMAPSession    *session,
 312                                          IMAPFolder     *folder,
 313                                          FolderItem     *item,
 314                                          gint           *exists,
 315                                          gint           *recent,
 316                                          gint           *unseen,
 317                                          guint32        *uid_validity,
 318                                          gint           *can_create_flags,
 319                                          gboolean        block);
 320 static gint imap_status                 (IMAPSession    *session,
 321                                          IMAPFolder     *folder,
 322                                          const gchar    *path,
 323                                          IMAPFolderItem *item,
 324                                          gint           *messages,
 325                                          guint32        *uid_next,
 326                                          guint32        *uid_validity,
 327                                          gint           *unseen,
 328                                          gboolean        block);
 329 static void     imap_commit_tags        (FolderItem     *item,
 330                                          MsgInfo        *msginfo,
 331                                          GSList         *set_tags,
 332                                          GSList         *unset_tags);
 333
 334 static gchar imap_get_path_separator            (IMAPSession    *session,
 335                                                  IMAPFolder     *folder,
 336                                                  const gchar    *path,
 337                                                  gint           *ok);
 338 static gchar *imap_get_real_path                (IMAPSession    *session,
 339                                                  IMAPFolder     *folder,
 340                                                  const gchar    *path,
 341                                                  gint           *ok);
 342 #ifdef HAVE_LIBETPAN
 343 static void imap_synchronise            (FolderItem     *item, gint days);
 344 #endif
 345 static gboolean imap_is_busy            (Folder *folder);
 346
 347 static void imap_free_capabilities      (IMAPSession    *session);
 348
 349 /* low-level IMAP4rev1 commands */
 350 static gint imap_cmd_login      (IMAPSession    *session,
 351                                  const gchar    *user,
 352                                  const gchar    *pass,
 353                                  const gchar    *type);
 354 static gint imap_cmd_noop       (IMAPSession    *session);
 355 #ifdef USE_GNUTLS
 356 static gint imap_cmd_starttls   (IMAPSession    *session);
 357 #endif
 358 static gint imap_cmd_select     (IMAPSession    *session,
 359                                  const gchar    *folder,
 360                                  gint           *exists,
 361                                  gint           *recent,
 362                                  gint           *unseen,
 363                                  guint32        *uid_validity,
 364                                  gint           *can_create_flags,
 365                                  GSList         **ok_flags,
 366                                  gboolean        block);
 367 static gint imap_cmd_close      (IMAPSession    *session);
 368 static gint imap_cmd_examine    (IMAPSession    *session,
 369                                  const gchar    *folder,
 370                                  gint           *exists,
 371                                  gint           *recent,
 372                                  gint           *unseen,
 373                                  guint32        *uid_validity,
 374                                  gboolean        block);
 375 static gint imap_cmd_create     (IMAPSession    *sock,
 376                                  const gchar    *folder);
 377 static gint imap_cmd_rename     (IMAPSession    *sock,
 378                                  const gchar    *oldfolder,
 379                                  const gchar    *newfolder);
 380 static gint imap_cmd_delete     (IMAPSession    *session,
 381                                  const gchar    *folder);
 382 static gint imap_cmd_fetch      (IMAPSession    *sock,
 383                                  guint32         uid,
 384                                  const gchar    *filename,
 385                                  gboolean        headers,
 386                                  gboolean        body);
 387 static gint imap_cmd_append     (IMAPSession    *session,
 388                                  IMAPFolderItem *item,
 389                                  const gchar    *destfolder,
 390                                  const gchar    *file,
 391                                  IMAPFlags       flags,
 392                                  guint32        *new_uid);
 393 static gint imap_cmd_copy       (IMAPSession *session,
 394                                  struct mailimap_set * set,
 395                                  const gchar *destfolder,
 396                                  struct mailimap_set ** source,
 397                                  struct mailimap_set ** dest);
 398 static gint imap_cmd_store      (IMAPSession    *session,
 399                                  IMAPFolderItem *item,
 400                                  struct mailimap_set * set,
 401                                  IMAPFlags flags,
 402                                  GSList *tags,
 403                                  int do_add);
 404 static gint imap_cmd_expunge    (IMAPSession    *session, gboolean force);
 405
 406 static void imap_path_separator_subst           (gchar          *str,
 407                                                  gchar           separator);
 408
 409 static gboolean imap_rename_folder_func         (GNode          *node,
 410                                                  gpointer        data);
 411 static gint imap_get_num_list                   (Folder         *folder,
 412                                                  FolderItem     *item,
 413                                                  GSList        **list,
 414                                                  gboolean       *old_uids_valid);
 415 static GSList *imap_get_msginfos                (Folder         *folder,
 416                                                  FolderItem     *item,
 417                                                  GSList         *msgnum_list);
 418 static MsgInfo *imap_get_msginfo                (Folder         *folder,
 419                                                  FolderItem     *item,
 420                                                  gint            num);
 421 static gboolean imap_scan_required              (Folder         *folder,
 422                                                  FolderItem     *item);
 423 static void imap_change_flags                   (Folder         *folder,
 424                                                  FolderItem     *item,
 425                                                  MsgInfo        *msginfo,
 426                                                  MsgPermFlags    newflags);
 427 static gint imap_get_flags                      (Folder         *folder,
 428                                                  FolderItem     *item,
 429                                                  MsgInfoList    *msglist,
 430                                                  GHashTable     *msgflags);
 431 static gchar *imap_folder_get_path              (Folder         *folder);
 432 static gchar *imap_item_get_path                (Folder         *folder,
 433                                                  FolderItem     *item);
 434 static MsgInfo *imap_parse_msg(const gchar *file, FolderItem *item);
 435
 436
 437 /* data types conversion libetpan <-> claws */
 438 static GSList * imap_list_from_lep(IMAPFolder * folder,
 439                                    clist * list, const gchar * real_path, gboolean all);
 440 static GSList * imap_get_lep_set_from_numlist(IMAPFolder *folder, MsgNumberList *numlist);
 441 static GSList * imap_get_lep_set_from_msglist(IMAPFolder *folder, MsgInfoList *msglist);
 442 static GSList * imap_uid_list_from_lep(clist * list, gint* length);
 443 static GSList * imap_uid_list_from_lep_tab(carray * list);
 444 static void imap_flags_hash_from_lep_uid_flags_tab(carray * list,
 445                                                    GHashTable * hash,
 446                                                    GHashTable *tags_hash);
 447 static MsgInfo *imap_envelope_from_lep(struct imap_fetch_env_info * info,
 448                                        FolderItem *item);
 449 static void imap_lep_set_free(GSList *seq_list);
 450 static struct mailimap_flag_list * imap_flag_to_lep(IMAPFolderItem *item, IMAPFlags flags, GSList *tags);
 451
 452 typedef struct _hashtable_data {
 453         GSList *msglist;
 454         IMAPFolderItem *item;
 455 } hashtable_data;
 456
 457 static FolderClass imap_class;
 458
 459 FolderClass *imap_get_class(void)
 460 {
 461         if (imap_class.idstr == NULL) {
 462                 imap_class.type = F_IMAP;
 463                 imap_class.idstr = "imap";
 464                 imap_class.uistr = "IMAP4";
 465                 imap_class.supports_server_search = TRUE;
 466
 467                 /* Folder functions */
 468                 imap_class.new_folder = imap_folder_new;
 469                 imap_class.destroy_folder = imap_folder_destroy;
 470                 imap_class.scan_tree = imap_scan_tree;
 471                 imap_class.create_tree = imap_create_tree;
 472
 473                 /* FolderItem functions */
 474                 imap_class.item_new = imap_folder_item_new;
 475                 imap_class.item_destroy = imap_folder_item_destroy;
 476                 imap_class.item_get_path = imap_item_get_path;
 477                 imap_class.create_folder = imap_create_folder;
 478                 imap_class.rename_folder = imap_rename_folder;
 479                 imap_class.remove_folder = imap_remove_folder;
 480                 imap_class.close = imap_close;
 481                 imap_class.get_num_list = imap_get_num_list;
 482                 imap_class.scan_required = imap_scan_required;
 483                 imap_class.set_xml = folder_set_xml;
 484                 imap_class.get_xml = folder_get_xml;
 485                 imap_class.item_set_xml = imap_item_set_xml;
 486                 imap_class.item_get_xml = imap_item_get_xml;
 487
 488                 /* Message functions */
 489                 imap_class.get_msginfo = imap_get_msginfo;
 490                 imap_class.get_msginfos = imap_get_msginfos;
 491                 imap_class.fetch_msg = imap_fetch_msg;
 492                 imap_class.fetch_msg_full = imap_fetch_msg_full;
 493                 imap_class.add_msg = imap_add_msg;
 494                 imap_class.add_msgs = imap_add_msgs;
 495                 imap_class.copy_msg = imap_copy_msg;
 496                 imap_class.copy_msgs = imap_copy_msgs;
 497                 imap_class.search_msgs = search_msgs;
 498                 imap_class.remove_msg = imap_remove_msg;
 499                 imap_class.remove_msgs = imap_remove_msgs;
 500                 imap_class.expunge = imap_expunge;
 501                 imap_class.remove_all_msg = imap_remove_all_msg;
 502                 imap_class.is_msg_changed = imap_is_msg_changed;
 503                 imap_class.change_flags = imap_change_flags;
 504                 imap_class.get_flags = imap_get_flags;
 505                 imap_class.set_batch = imap_set_batch;
 506                 imap_class.synchronise = imap_synchronise;
 507                 imap_class.remove_cached_msg = imap_remove_cached_msg;
 508                 imap_class.commit_tags = imap_commit_tags;
 509 #ifdef USE_PTREAD
 510                 pthread_mutex_init(&imap_mutex, NULL);
 511 #endif
 512         }
 513
 514         return &imap_class;
 515 }
 516
 517 static void imap_refresh_sensitivity (IMAPSession *session)
 518 {
 519         MainWindow *mainwin;
 520
 521         if (session->sens_update_block)
 522                 return;
 523         mainwin = mainwindow_get_mainwindow();
 524         if (mainwin) {
 525                 toolbar_main_set_sensitive(mainwin);
 526                 main_window_set_menu_sensitive(mainwin);
 527         }
 528 }
 529
 530 static void lock_session(IMAPSession *session)
 531 {
 532         if (session) {
 533                 debug_print("locking session %p (%d)\n", session, session->busy);
 534                 if (session->busy)
 535                         debug_print("         SESSION WAS LOCKED !!      \n");
 536                 session->busy = TRUE;
 537                 imap_refresh_sensitivity(session);
 538         } else {
 539                 debug_print("can't lock null session\n");
 540         }
 541 }
 542
 543 static void unlock_session(IMAPSession *session)
 544 {
 545         if (session) {
 546                 debug_print("unlocking session %p\n", session);
 547                 session->busy = FALSE;
 548                 imap_refresh_sensitivity(session);
 549         } else {
 550                 debug_print("can't unlock null session\n");
 551         }
 552 }
 553
 554 static gboolean imap_ping(gpointer data)
 555 {
 556         Session *session = (Session *)data;
 557         IMAPSession *imap_session = IMAP_SESSION(session);
 558         int r;
 559
 560         if (session->state != SESSION_READY)
 561                 return FALSE;
 562         if (imap_session->busy || !imap_session->authenticated)
 563                 return TRUE;
 564
 565         lock_session(imap_session);
 566         r = imap_cmd_noop(imap_session);
 567         unlock_session(imap_session);
 568
 569         return r == MAILIMAP_NO_ERROR;
 570 }
 571
 572 static void imap_disc_session_destroy(IMAPSession *session)
 573 {
 574         RemoteFolder *rfolder = NULL;
 575
 576         if (session == NULL)
 577                 return;
 578
 579         rfolder = REMOTE_FOLDER(IMAP_SESSION(session)->folder);
 580
 581         if (rfolder == NULL)
 582                 return;
 583         log_warning(LOG_PROTOCOL, _("IMAP4 connection broken\n"));
 584         SESSION(session)->state = SESSION_DISCONNECTED;
 585         SESSION(session)->sock = NULL;
 586 }
 587
 588 static void imap_safe_destroy(IMAPSession *session)
 589 {
 590         if (!session->busy)
 591                 session_destroy(SESSION(session));
 592         else
 593                 session->do_destroy = TRUE;
 594 }
 595
 596 static gboolean is_fatal(int libetpan_errcode)
 597 {
 598         switch(libetpan_errcode) {
 599         case MAILIMAP_ERROR_STREAM:
 600         case MAILIMAP_ERROR_PROTOCOL:
 601         case MAILIMAP_ERROR_PARSE:
 602         case MAILIMAP_ERROR_BAD_STATE:
 603                 return TRUE;
 604         default:
 605                 return FALSE;
 606         }
 607 }
 608
 609 static void imap_handle_error(Session *session, const gchar *server, int libetpan_errcode)
 610 {
 611         const gchar *session_server = (session ? session->server : NULL);
 612
 613         if (session_server == NULL)
 614                 session_server = server;
 615         if (session_server == NULL)
 616                 session_server = "(null)";
 617
 618         switch(libetpan_errcode) {
 619         case MAILIMAP_NO_ERROR:
 620                 return;
 621         case MAILIMAP_NO_ERROR_AUTHENTICATED:
 622                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("authenticated"), "\n", NULL), session_server);
 623                 break;
 624         case MAILIMAP_NO_ERROR_NON_AUTHENTICATED:
 625                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("not authenticated"), "\n", NULL), session_server);
 626                 break;
 627         case MAILIMAP_ERROR_BAD_STATE:
 628                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("bad state"), "\n", NULL), session_server);
 629                 break;
 630         case MAILIMAP_ERROR_STREAM:
 631                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("stream error"), "\n", NULL), session_server);
 632                 break;
 633         case MAILIMAP_ERROR_PARSE:
 634                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("parse error "
 635                                             "(very probably non-RFC compliance from the server)"), "\n", NULL), session_server);
 636                 break;
 637         case MAILIMAP_ERROR_CONNECTION_REFUSED:
 638                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("connection refused"), "\n", NULL), session_server);
 639                 break;
 640         case MAILIMAP_ERROR_MEMORY:
 641                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("memory error"), "\n", NULL), session_server);
 642                 break;
 643         case MAILIMAP_ERROR_FATAL:
 644                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("fatal error"), "\n", NULL), session_server);
 645                 break;
 646         case MAILIMAP_ERROR_PROTOCOL:
 647                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("protocol error "
 648                                             "(very probably non-RFC compliance from the server)"), "\n", NULL), session_server);
 649                 break;
 650         case MAILIMAP_ERROR_DONT_ACCEPT_CONNECTION:
 651                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("connection not accepted"), "\n", NULL), session_server);
 652                 break;
 653         case MAILIMAP_ERROR_APPEND:
 654                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("APPEND error"), "\n", NULL), session_server);
 655                 break;
 656         case MAILIMAP_ERROR_NOOP:
 657                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("NOOP error"), "\n", NULL), session_server);
 658                 break;
 659         case MAILIMAP_ERROR_LOGOUT:
 660                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("LOGOUT error"), "\n", NULL), session_server);
 661                 break;
 662         case MAILIMAP_ERROR_CAPABILITY:
 663                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("CAPABILITY error"), "\n", NULL), session_server);
 664                 break;
 665         case MAILIMAP_ERROR_CHECK:
 666                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("CHECK error"), "\n", NULL), session_server);
 667                 break;
 668         case MAILIMAP_ERROR_CLOSE:
 669                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("CLOSE error"), "\n", NULL), session_server);
 670                 break;
 671         case MAILIMAP_ERROR_EXPUNGE:
 672                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("EXPUNGE error"), "\n", NULL), session_server);
 673                 break;
 674         case MAILIMAP_ERROR_COPY:
 675                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("COPY error"), "\n", NULL), session_server);
 676                 break;
 677         case MAILIMAP_ERROR_UID_COPY:
 678                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("UID COPY error"), "\n", NULL), session_server);
 679                 break;
 680         case MAILIMAP_ERROR_CREATE:
 681                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("CREATE error"), "\n", NULL), session_server);
 682                 break;
 683         case MAILIMAP_ERROR_DELETE:
 684                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("DELETE error"), "\n", NULL), session_server);
 685                 break;
 686         case MAILIMAP_ERROR_EXAMINE:
 687                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("EXAMINE error"), "\n", NULL), session_server);
 688                 break;
 689         case MAILIMAP_ERROR_FETCH:
 690                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("FETCH error"), "\n", NULL), session_server);
 691                 break;
 692         case MAILIMAP_ERROR_UID_FETCH:
 693                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("UID FETCH error"), "\n", NULL), session_server);
 694                 break;
 695         case MAILIMAP_ERROR_LIST:
 696                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("LIST error"), "\n", NULL), session_server);
 697                 break;
 698         case MAILIMAP_ERROR_LOGIN:
 699                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("LOGIN error"), "\n", NULL), session_server);
 700                 break;
 701         case MAILIMAP_ERROR_LSUB:
 702                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("LSUB error"), "\n", NULL), session_server);
 703                 break;
 704         case MAILIMAP_ERROR_RENAME:
 705                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("RENAME error"), "\n", NULL), session_server);
 706                 break;
 707         case MAILIMAP_ERROR_SEARCH:
 708                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("SEARCH error"), "\n", NULL), session_server);
 709                 break;
 710         case MAILIMAP_ERROR_UID_SEARCH:
 711                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("UID SEARCH error"), "\n", NULL), session_server);
 712                 break;
 713         case MAILIMAP_ERROR_SELECT:
 714                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("SELECT error"), "\n", NULL), session_server);
 715                 break;
 716         case MAILIMAP_ERROR_STATUS:
 717                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("STATUS error"), "\n", NULL), session_server);
 718                 break;
 719         case MAILIMAP_ERROR_STORE:
 720                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("STORE error"), "\n", NULL), session_server);
 721                 break;
 722         case MAILIMAP_ERROR_UID_STORE:
 723                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("UID STORE error"), "\n", NULL), session_server);
 724                 break;
 725         case MAILIMAP_ERROR_SUBSCRIBE:
 726                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("SUBSCRIBE error"), "\n", NULL), session_server);
 727                 break;
 728         case MAILIMAP_ERROR_UNSUBSCRIBE:
 729                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("UNSUBSCRIBE error"), "\n", NULL), session_server);
 730                 break;
 731         case MAILIMAP_ERROR_STARTTLS:
 732                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("STARTTLS error"), "\n", NULL), session_server);
 733                 break;
 734         case MAILIMAP_ERROR_INVAL:
 735                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("INVAL error"), "\n", NULL), session_server);
 736                 break;
 737         case MAILIMAP_ERROR_EXTENSION:
 738                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("EXTENSION error"), "\n", NULL), session_server);
 739                 break;
 740         case MAILIMAP_ERROR_SASL:
 741                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("SASL error"), "\n", NULL), session_server);
 742                 break;
 743 #ifdef USE_GNUTLS
 744         case MAILIMAP_ERROR_SSL:
 745                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("SSL error"), "\n", NULL), session_server);
 746                 break;
 747 #endif
 748         default:
 749                 log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("Unknown error [%d]"), "\n", NULL),
 750                         session_server, libetpan_errcode);
 751                 break;
 752         }
 753
 754         if (session && is_fatal(libetpan_errcode)) {
 755                 imap_disc_session_destroy(IMAP_SESSION(session));
 756         } else if (session && !is_fatal(libetpan_errcode)) {
 757                 if (IMAP_SESSION(session)->busy)
 758                         unlock_session(IMAP_SESSION(session));
 759         }
 760 }
 761
 762 static Folder *imap_folder_new(const gchar *name, const gchar *path)
 763 {
 764         Folder *folder;
 765
 766         folder = (Folder *)g_new0(IMAPFolder, 1);
 767         folder->klass = &imap_class;
 768         imap_folder_init(folder, name, path);
 769
 770         return folder;
 771 }
 772
 773 static void imap_folder_destroy(Folder *folder)
 774 {
 775         while (imap_folder_get_refcnt(folder) > 0)
 776                 gtk_main_iteration();
 777
 778         g_free(IMAP_FOLDER(folder)->search_charset);
 779
 780         folder_remote_folder_destroy(REMOTE_FOLDER(folder));
 781         imap_done(folder);
 782 }
 783
 784 static void imap_folder_init(Folder *folder, const gchar *name,
 785                              const gchar *path)
 786 {
 787         folder_remote_folder_init((Folder *)folder, name, path);
 788         IMAP_FOLDER(folder)->max_set_size = IMAP_SET_MAX_COUNT;
 789         IMAP_FOLDER(folder)->search_charset_supported = TRUE;
 790         IMAP_FOLDER(folder)->search_charset = g_strdup(conv_get_locale_charset_str_no_utf8());
 791 }
 792
 793 static FolderItem *imap_folder_item_new(Folder *folder)
 794 {
 795         IMAPFolderItem *item;
 796
 797         item = g_new0(IMAPFolderItem, 1);
 798         item->lastuid = 0;
 799         item->uid_next = 0;
 800         item->uid_list = NULL;
 801
 802         return (FolderItem *)item;
 803 }
 804
 805 static void imap_folder_item_destroy(Folder *folder, FolderItem *_item)
 806 {
 807         IMAPFolderItem *item = (IMAPFolderItem *)_item;
 808
 809         g_return_if_fail(item != NULL);
 810         g_slist_free(item->uid_list);
 811
 812         g_free(_item);
 813 }
 814
 815 static gboolean imap_reset_uid_lists_func(GNode *node, gpointer data)
 816 {
 817         IMAPFolderItem *item = (IMAPFolderItem *)node->data;
 818
 819         item->lastuid = 0;
 820         g_slist_free(item->uid_list);
 821         item->uid_list = NULL;
 822
 823         return FALSE;
 824 }
 825
 826 static void imap_reset_uid_lists(Folder *folder)
 827 {
 828         if(folder->node == NULL)
 829                 return;
 830
 831         /* Destroy all uid lists and rest last uid */
 832         g_node_traverse(folder->node, G_IN_ORDER, G_TRAVERSE_ALL, -1, imap_reset_uid_lists_func, NULL);
 833 }
 834
 835 static int imap_get_capabilities(IMAPSession *session)
 836 {
 837         struct mailimap_capability_data *capabilities = NULL;
 838         clistiter *cur;
 839         int result;
 840
 841         if (session->capability != NULL)
 842                 return MAILIMAP_NO_ERROR;
 843
 844         result = imap_threaded_capability(session->folder, &capabilities);
 845
 846         if (result != MAILIMAP_NO_ERROR) {
 847                 return result;
 848         }
 849
 850         if (capabilities == NULL || capabilities->cap_list == NULL) {
 851                 return MAILIMAP_NO_ERROR;
 852         }
 853
 854         for(cur = clist_begin(capabilities->cap_list) ; cur != NULL ;
 855             cur = clist_next(cur)) {
 856                 struct mailimap_capability * cap =
 857                         clist_content(cur);
 858                 if (!cap || cap->cap_data.cap_name == NULL)
 859                         continue;
 860                 session->capability = g_slist_append
 861                                 (session->capability,
 862                                  g_strdup(cap->cap_data.cap_name));
 863                 debug_print("got capa %s\n", cap->cap_data.cap_name);
 864         }
 865         mailimap_capability_data_free(capabilities);
 866         return MAILIMAP_NO_ERROR;
 867 }
 868
 869 static gboolean imap_has_capability(IMAPSession *session, const gchar *cap)
 870 {
 871         GSList *cur;
 872         for (cur = session->capability; cur; cur = cur->next) {
 873                 if (!g_ascii_strcasecmp(cur->data, cap))
 874                         return TRUE;
 875         }
 876         return FALSE;
 877 }
 878
 879 static gint imap_auth(IMAPSession *session, const gchar *user, const gchar *pass,
 880                       IMAPAuthType type)
 881 {
 882         gint ok = MAILIMAP_ERROR_LOGIN;
 883         static time_t last_login_err = 0;
 884         gchar *ext_info = "";
 885         int r;
 886         gchar *server = NULL;
 887         if ((r = imap_get_capabilities(session)) != MAILIMAP_NO_ERROR) {
 888                 imap_handle_error(SESSION(session), NULL, r);
 889                 return r;
 890         }
 891         server = g_strdup(SESSION(session)->server);
 892         switch(type) {
 893         case IMAP_AUTH_ANON:
 894                 ok = imap_cmd_login(session, user, pass, "ANONYMOUS");
 895                 break;
 896         case IMAP_AUTH_CRAM_MD5:
 897                 ok = imap_cmd_login(session, user, pass, "CRAM-MD5");
 898                 break;
 899         case IMAP_AUTH_DIGEST_MD5:
 900                 ok = imap_cmd_login(session, user, pass, "DIGEST-MD5");
 901                 break;
 902         case IMAP_AUTH_SCRAM_SHA1:
 903                 ok = imap_cmd_login(session, user, pass, "SCRAM-SHA-1");
 904                 break;
 905         case IMAP_AUTH_PLAIN:
 906                 ok = imap_cmd_login(session, user, pass, "PLAIN");
 907                 break;
 908         case IMAP_AUTH_LOGIN:
 909                 ok = imap_cmd_login(session, user, pass, "LOGIN");
 910                 break;
 911         case IMAP_AUTH_PLAINTEXT:
 912                 ok = imap_cmd_login(session, user, pass, "plaintext");
 913                 break;
 914         case IMAP_AUTH_GSSAPI:
 915                 ok = imap_cmd_login(session, user, pass, "GSSAPI");
 916                 break;
 917         default:
 918                 debug_print("capabilities:\n"
 919                                 "\t ANONYMOUS %d\n"
 920                                 "\t CRAM-MD5 %d\n"
 921                                 "\t DIGEST-MD5 %d\n"
 922                                 "\t SCRAM-SHA-1 %d\n"
 923                                 "\t PLAIN %d\n"
 924                                 "\t LOGIN %d\n"
 925                                 "\t GSSAPI %d\n",
 926                         imap_has_capability(session, "ANONYMOUS"),
 927                         imap_has_capability(session, "CRAM-MD5"),
 928                         imap_has_capability(session, "DIGEST-MD5"),
 929                         imap_has_capability(session, "SCRAM-SHA-1"),
 930                         imap_has_capability(session, "PLAIN"),
 931                         imap_has_capability(session, "LOGIN"),
 932                         imap_has_capability(session, "GSSAPI"));
 933                 if (imap_has_capability(session, "CRAM-MD5"))
 934                         ok = imap_cmd_login(session, user, pass, "CRAM-MD5");
 935                 if (ok == MAILIMAP_ERROR_LOGIN && imap_has_capability(session, "DIGEST-MD5"))
 936                         ok = imap_cmd_login(session, user, pass, "DIGEST-MD5");
 937                 if (ok == MAILIMAP_ERROR_LOGIN && imap_has_capability(session, "SCRAM-SHA-1"))
 938                         ok = imap_cmd_login(session, user, pass, "SCRAM-SHA-1");
 939                 if (ok == MAILIMAP_ERROR_LOGIN && imap_has_capability(session, "PLAIN"))
 940                         ok = imap_cmd_login(session, user, pass, "PLAIN");
 941                 if (ok == MAILIMAP_ERROR_LOGIN && imap_has_capability(session, "LOGIN"))
 942                         ok = imap_cmd_login(session, user, pass, "LOGIN");
 943                 if (ok == MAILIMAP_ERROR_LOGIN && imap_has_capability(session, "GSSAPI"))
 944                         ok = imap_cmd_login(session, user, pass, "GSSAPI");
 945                 if (ok == MAILIMAP_ERROR_LOGIN) /* we always try plaintext login before giving up */
 946                         ok = imap_cmd_login(session, user, pass, "plaintext");
 947         }
 948
 949         if (ok == MAILIMAP_NO_ERROR)
 950                 session->authenticated = TRUE;
 951         else {
 952                 if (type == IMAP_AUTH_CRAM_MD5) {
 953                         ext_info = _("\n\nCRAM-MD5 logins only work if libetpan has been "
 954                                      "compiled with SASL support and the "
 955                                      "CRAM-MD5 SASL plugin is installed.");
 956                 }
 957
 958                 if (type == IMAP_AUTH_DIGEST_MD5) {
 959                         ext_info = _("\n\nDIGEST-MD5 logins only work if libetpan has been "
 960                                      "compiled with SASL support and the "
 961                                      "DIGEST-MD5 SASL plugin is installed.");
 962                 }
 963
 964                 if (type == IMAP_AUTH_SCRAM_SHA1) {
 965                         ext_info = _("\n\nSCRAM-SHA-1 logins only work if libetpan has been "
 966                                      "compiled with SASL support and the "
 967                                      "SCRAM SASL plugin is installed.");
 968                 }
 969
 970                 if (type == IMAP_AUTH_PLAIN) {
 971                         ext_info = _("\n\nPLAIN logins only work if libetpan has been "
 972                                      "compiled with SASL support and the "
 973                                      "PLAIN SASL plugin is installed.");
 974                 }
 975
 976                 if (type == IMAP_AUTH_LOGIN) {
 977                         ext_info = _("\n\nLOGIN logins only work if libetpan has been "
 978                                      "compiled with SASL support and the "
 979                                      "LOGIN SASL plugin is installed.");
 980                 }
 981
 982                 if (time(NULL) - last_login_err > 10) {
 983                         if (!prefs_common.no_recv_err_panel) {
 984                                 alertpanel_error_log(_("Connection to %s failed: "
 985                                         "login refused.%s"),
 986                                         server, ext_info);
 987                         } else {
 988                                 log_error(LOG_PROTOCOL, _("Connection to %s failed: "
 989                                         "login refused.%s\n"),
 990                                         server, ext_info);
 991                         }
 992                 }
 993                 last_login_err = time(NULL);
 994         }
 995         g_free(server);
 996         return ok;
 997 }
 998
 999 static IMAPSession *imap_reconnect_if_possible(Folder *folder, IMAPSession *session)
1000 {
1001         RemoteFolder *rfolder = REMOTE_FOLDER(folder);
1002         /* Check if this is the first try to establish a
1003            connection, if yes we don't try to reconnect */
1004         debug_print("reconnecting\n");
1005         if (rfolder->session == NULL) {
1006                 log_warning(LOG_PROTOCOL, _("Connecting to %s failed"),
1007                             folder->account->recv_server);
1008                 SESSION(session)->sock = NULL;
1009                 imap_safe_destroy(session);
1010                 session = NULL;
1011         } else {
1012                 rfolder->session = NULL;
1013                 log_warning(LOG_PROTOCOL, _("IMAP4 connection to %s has been"
1014                             " disconnected. Reconnecting...\n"),
1015                             folder->account->recv_server);
1016                 statusbar_print_all(_("IMAP4 connection to %s has been"
1017                             " disconnected. Reconnecting...\n"),
1018                             folder->account->recv_server);
1019                 SESSION(session)->state = SESSION_DISCONNECTED;
1020                 SESSION(session)->sock = NULL;
1021                 imap_safe_destroy(session);
1022                 /* Clear folders session to make imap_session_get create
1023                    a new session, because of rfolder->session == NULL
1024                    it will not try to reconnect again and so avoid an
1025                    endless loop */
1026                 debug_print("getting session...\n");
1027                 session = imap_session_get(folder);
1028                 rfolder->session = SESSION(session);
1029                 statusbar_pop_all();
1030         }
1031         return session;
1032 }
1033
1034 static IMAPSession *imap_session_get(Folder *folder)
1035 {
1036         RemoteFolder *rfolder = REMOTE_FOLDER(folder);
1037         IMAPSession *session = NULL;
1038         gint r = MAILIMAP_NO_ERROR;
1039
1040         g_return_val_if_fail(folder != NULL, NULL);
1041         g_return_val_if_fail(FOLDER_CLASS(folder) == &imap_class, NULL);
1042         g_return_val_if_fail(folder->account != NULL, NULL);
1043
1044         if (prefs_common.work_offline &&
1045             !inc_offline_should_override(FALSE,
1046                 _("Claws Mail needs network access in order "
1047                   "to access the IMAP server."))) {
1048                 return NULL;
1049         }
1050
1051         /* check for deferred destroy */
1052         if (rfolder->session != NULL) {
1053                 session = IMAP_SESSION(rfolder->session);
1054                 if (!session->busy && session->do_destroy) {
1055                         rfolder->session = NULL;
1056                         imap_safe_destroy(session);
1057                         session = NULL;
1058                 }
1059         }
1060
1061         /* Make sure we have a session */
1062         if (rfolder->session != NULL && rfolder->session->state != SESSION_DISCONNECTED) {
1063                 session = IMAP_SESSION(rfolder->session);
1064         } else if (rfolder->session != NULL && rfolder->session->state == SESSION_DISCONNECTED) {
1065                 imap_safe_destroy(IMAP_SESSION(rfolder->session));
1066                 rfolder->session = NULL;
1067                 goto new_conn;
1068         } else if (rfolder->connecting) {
1069                 debug_print("already connecting\n");
1070                 return NULL;
1071         } else {
1072 new_conn:
1073                 imap_reset_uid_lists(folder);
1074                 if (time(NULL) - rfolder->last_failure <= 2)
1075                         return NULL;
1076                 rfolder->connecting = TRUE;
1077                 session = imap_session_new(folder, folder->account);
1078         }
1079         if(session == NULL) {
1080                 rfolder->last_failure = time(NULL);
1081                 rfolder->connecting = FALSE;
1082                 return NULL;
1083         }
1084
1085         /* Make sure session is authenticated */
1086         if (!IMAP_SESSION(session)->authenticated)
1087                 r = imap_session_authenticate(IMAP_SESSION(session), folder->account);
1088
1089         if (r != MAILIMAP_NO_ERROR || (!is_fatal(r) && !IMAP_SESSION(session)->authenticated)) {
1090                 rfolder->session = NULL;
1091                 if (!is_fatal(r)) {
1092                         imap_threaded_disconnect(session->folder);
1093                 }
1094                 SESSION(session)->state = SESSION_DISCONNECTED;
1095                 SESSION(session)->sock = NULL;
1096                 imap_safe_destroy(session);
1097                 rfolder->last_failure = time(NULL);
1098                 rfolder->connecting = FALSE;
1099                 return NULL;
1100         }
1101
1102         /* I think the point of this code is to avoid sending a
1103          * keepalive if we've used the session recently and therefore
1104          * think it's still alive.  Unfortunately, most of the code
1105          * does not yet check for errors on the socket, and so if the
1106          * connection drops we don't notice until the timeout expires.
1107          * A better solution than sending a NOOP every time would be
1108          * for every command to be prepared to retry until it is
1109          * successfully sent. -- mbp */
1110         if ((time(NULL) - SESSION(session)->last_access_time > SESSION_TIMEOUT_INTERVAL) || session->cancelled) {
1111                 /* verify that the session is still alive */
1112                 r = imap_cmd_noop(session);
1113
1114                 if (r != MAILIMAP_NO_ERROR) {
1115                         debug_print("disconnected!\n");
1116                         if (!is_fatal(r))
1117                                 session = imap_reconnect_if_possible(folder, session);
1118                         else {
1119                                 rfolder->session = NULL;
1120                                 rfolder->connecting = FALSE;
1121                                 SESSION(session)->state = SESSION_DISCONNECTED;
1122                                 SESSION(session)->sock = NULL;
1123                                 imap_safe_destroy(session);
1124                                 session = imap_session_get(folder);
1125                         }
1126                 }
1127                 if (session)
1128                         session->cancelled = FALSE;
1129         }
1130
1131         rfolder->session = SESSION(session);
1132         rfolder->connecting = FALSE;
1133
1134         return IMAP_SESSION(session);
1135 }
1136
1137 static IMAPSession *imap_session_new(Folder * folder,
1138                                      const PrefsAccount *account)
1139 {
1140         IMAPSession *session;
1141         gushort port;
1142         int r;
1143         int authenticated = FALSE;
1144         gchar *buf;
1145
1146 #ifdef USE_GNUTLS
1147         /* FIXME: IMAP over SSL only... */
1148         SSLType ssl_type;
1149
1150         port = account->set_imapport ? account->imapport
1151                 : account->ssl_imap == SSL_TUNNEL ? IMAPS_PORT : IMAP4_PORT;
1152         ssl_type = account->ssl_imap;
1153 #else
1154         if (account->ssl_imap != SSL_NONE) {
1155                 if (alertpanel_full(_("Insecure connection"),
1156                         _("This connection is configured to be secured "
1157                           "using SSL, but SSL is not available in this "
1158                           "build of Claws Mail. \n\n"
1159                           "Do you want to continue connecting to this "
1160                           "server? The communication would not be "
1161                           "secure."),
1162                           GTK_STOCK_CANCEL, _("Con_tinue connecting"),
1163                           NULL, FALSE, NULL, ALERT_WARNING,
1164                           G_ALERTDEFAULT) != G_ALERTALTERNATE)
1165                         return NULL;
1166         }
1167         port = account->set_imapport ? account->imapport
1168                 : IMAP4_PORT;
1169 #endif
1170
1171         imap_init(folder);
1172         buf = g_strdup_printf(_("Account '%s': Connecting to IMAP4 server: %s:%d..."),
1173                                 folder->account->account_name, folder->account->recv_server,
1174                                 port);
1175         statuswindow_print_all("%s", buf);
1176         log_message(LOG_PROTOCOL, "%s\n", buf);
1177         g_free(buf);
1178
1179 #ifndef G_OS_WIN32
1180         if (account->set_tunnelcmd) {
1181                 r = imap_threaded_connect_cmd(folder,
1182                                               account->tunnelcmd,
1183                                               account->recv_server,
1184                                               port);
1185         }
1186         else
1187 #endif
1188         {
1189 #ifdef USE_GNUTLS
1190                 if (ssl_type == SSL_TUNNEL) {
1191                         r = imap_threaded_connect_ssl(folder,
1192                                                       account->recv_server,
1193                                                       port);
1194                 }
1195                 else
1196 #endif
1197                 {
1198                         r = imap_threaded_connect(folder,
1199                                                   account->recv_server,
1200                                                   port);
1201                 }
1202         }
1203
1204         statuswindow_pop_all();
1205         if (r == MAILIMAP_NO_ERROR_AUTHENTICATED) {
1206                 authenticated = TRUE;
1207         }
1208         else if (r == MAILIMAP_NO_ERROR_NON_AUTHENTICATED) {
1209                 authenticated = FALSE;
1210         }
1211         else {
1212 #ifdef USE_GNUTLS
1213                 if (r == MAILIMAP_ERROR_SSL)
1214                         log_error(LOG_PROTOCOL, _("SSL handshake failed\n"));
1215                 else
1216 #endif
1217                         imap_handle_error(NULL, account->recv_server, r);
1218
1219                 if(!prefs_common.no_recv_err_panel) {
1220                         alertpanel_error_log(_("Can't connect to IMAP4 server: %s:%d"),
1221                                          account->recv_server, port);
1222                 } else {
1223                         log_error(LOG_PROTOCOL, _("Can't connect to IMAP4 server: %s:%d\n"),
1224                                          account->recv_server, port);
1225                 }
1226
1227                 return NULL;
1228         }
1229
1230         session = g_new0(IMAPSession, 1);
1231         session_init(SESSION(session), account, FALSE);
1232         SESSION(session)->type             = SESSION_IMAP;
1233         SESSION(session)->server           = g_strdup(account->recv_server);
1234         SESSION(session)->port             = port;
1235         SESSION(session)->sock             = NULL;
1236
1237         SESSION(session)->destroy          = imap_session_destroy;
1238
1239         session->capability = NULL;
1240
1241         session->authenticated = authenticated;
1242         session->mbox = NULL;
1243         session->exists = 0;
1244         session->recent = 0;
1245         session->expunge = 0;
1246         session->cmd_count = 0;
1247         session->folder = folder;
1248         IMAP_FOLDER(session->folder)->last_seen_separator = 0;
1249
1250 #ifdef USE_GNUTLS
1251         if (account->ssl_imap == SSL_STARTTLS) {
1252                 gint ok;
1253
1254                 ok = imap_cmd_starttls(session);
1255                 if (ok != MAILIMAP_NO_ERROR) {
1256                         log_warning(LOG_PROTOCOL, _("Can't start TLS session.\n"));
1257                         if (!is_fatal(ok)) {
1258                                 SESSION(session)->sock = NULL;
1259                                 imap_safe_destroy(session);
1260                         }
1261                         return NULL;
1262                 }
1263
1264                 imap_free_capabilities(session);
1265                 session->authenticated = FALSE;
1266                 session->uidplus = FALSE;
1267                 session->cmd_count = 1;
1268         }
1269 #endif
1270         log_message(LOG_PROTOCOL, "IMAP connection is %s-authenticated\n",
1271                     (session->authenticated) ? "pre" : "un");
1272
1273         session_register_ping(SESSION(session), imap_ping);
1274
1275         return session;
1276 }
1277
1278 static gint imap_session_authenticate(IMAPSession *session,
1279                                       PrefsAccount *account)
1280 {
1281         gchar *pass, *acc_pass;
1282         gboolean failed = FALSE;
1283         gint ok = MAILIMAP_NO_ERROR;
1284         g_return_val_if_fail(account->userid != NULL, MAILIMAP_ERROR_BAD_STATE);
1285
1286         if (password_get(account->userid, account->recv_server, "imap",
1287                          SESSION(session)->port, &pass)) {
1288                 Xstrdup_a(acc_pass, pass, {g_free(pass); return MAILIMAP_NO_ERROR;});
1289                 g_free(pass);
1290         } else {
1291                 acc_pass = passwd_store_get_account(account->account_id,
1292                                 PWS_ACCOUNT_RECV);
1293         }
1294 try_again:
1295         pass = acc_pass;
1296         if (!pass && account->imap_auth_type != IMAP_AUTH_ANON && account->imap_auth_type != IMAP_AUTH_GSSAPI) {
1297                 gchar *tmp_pass;
1298                 tmp_pass = input_dialog_query_password_keep(account->recv_server,
1299                                                             account->userid,
1300                                                             &(account->session_passwd));
1301                 if (!tmp_pass) {
1302                         return MAILIMAP_NO_ERROR;
1303                 }
1304                 Xstrdup_a(pass, tmp_pass, {g_free(tmp_pass); return MAILIMAP_NO_ERROR;});
1305                 g_free(tmp_pass);
1306         } else if (account->imap_auth_type == IMAP_AUTH_ANON || account->imap_auth_type == IMAP_AUTH_GSSAPI) {
1307                 pass = "";
1308         }
1309         if ((ok = imap_auth(session, account->userid, pass, account->imap_auth_type)) != MAILIMAP_NO_ERROR) {
1310
1311                 if (!failed && !is_fatal(ok)) {
1312                         if (acc_pass != NULL) {
1313                                 memset(acc_pass, 0, strlen(acc_pass));
1314                                 g_free(acc_pass);
1315                                 acc_pass = NULL;
1316                         }
1317                         failed = TRUE;
1318                         if (account->session_passwd != NULL) {
1319                                 g_free(account->session_passwd);
1320                                 account->session_passwd = NULL;
1321                         }
1322                         goto try_again;
1323                 } else {
1324                         if (prefs_common.no_recv_err_panel) {
1325                                 log_error(LOG_PROTOCOL, _("Couldn't login to IMAP server %s.\n"), account->recv_server);
1326                                 mainwindow_show_error();
1327                         } else
1328                                 alertpanel_error_log(_("Couldn't login to IMAP server %s."), account->recv_server);
1329                 }
1330
1331                 if (acc_pass != NULL) {
1332                         g_free(acc_pass);
1333                         memset(acc_pass, 0, strlen(acc_pass));
1334                 }
1335
1336                 return ok;
1337         }
1338
1339         if (acc_pass) {
1340                 memset(acc_pass, 0, strlen(acc_pass));
1341                 g_free(acc_pass);
1342         }
1343         statuswindow_pop_all();
1344         session->authenticated = TRUE;
1345         return MAILIMAP_NO_ERROR;
1346 }
1347
1348 static void imap_session_destroy(Session *session)
1349 {
1350         if (session->state != SESSION_DISCONNECTED)
1351                 imap_threaded_disconnect(IMAP_SESSION(session)->folder);
1352
1353         imap_free_capabilities(IMAP_SESSION(session));
1354         g_free(IMAP_SESSION(session)->mbox);
1355 }
1356
1357 static gchar *imap_fetch_msg(Folder *folder, FolderItem *item, gint uid)
1358 {
1359         return imap_fetch_msg_full(folder, item, uid, TRUE, TRUE);
1360 }
1361
1362 static guint get_file_size_with_crs(const gchar *filename)
1363 {
1364         FILE *fp = NULL;
1365         guint cnt = 0;
1366         gchar buf[4096];
1367
1368         if (filename == NULL)
1369                 return -1;
1370
1371         fp = g_fopen(filename, "rb");
1372         if (!fp)
1373                 return -1;
1374
1375         while (fgets(buf, sizeof (buf), fp) != NULL) {
1376                 cnt += strlen(buf);
1377                 if (!strstr(buf, "\r\n") && strstr(buf, "\n"))
1378                         cnt++;
1379         }
1380
1381         fclose(fp);
1382         return cnt;
1383 }
1384
1385 static gchar *imap_get_cached_filename(FolderItem *item, guint msgnum)
1386 {
1387         gchar *path, *filename;
1388
1389         cm_return_val_if_fail(item != NULL, NULL);
1390
1391         path = folder_item_get_path(item);
1392
1393         if (!is_dir_exist(path)) {
1394                 g_free(path);
1395                 return NULL;
1396         }
1397
1398         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(msgnum), NULL);
1399
1400         if (is_dir_exist(filename)) {
1401                 g_free(filename);
1402                 filename = g_strconcat(path, G_DIR_SEPARATOR_S, ".", itos(msgnum), NULL);
1403         }
1404         g_free(path);
1405
1406         return filename;
1407 }
1408
1409 static void imap_remove_cached_msg(Folder *folder, FolderItem *item, MsgInfo *msginfo)
1410 {
1411         gchar *filename;
1412
1413         filename = imap_get_cached_filename(item, msginfo->msgnum);
1414
1415         cm_return_if_fail(filename != NULL);
1416
1417         if (is_file_exist(filename)) {
1418                 claws_unlink(filename);
1419         }
1420         g_free(filename);
1421 }
1422
1423 typedef struct _TagsData {
1424         gchar *str;
1425         GSList *msglist;
1426         IMAPFolderItem *item;
1427 } TagsData;
1428
1429 static void imap_commit_tags(FolderItem *item, MsgInfo *msginfo, GSList *tags_set, GSList *tags_unset)
1430 {
1431         IMAPSession *session;
1432         gint ok, can_create_tags;
1433         Folder *folder = NULL;
1434         TagsData *ht_data = NULL;
1435         GSList *cur;
1436
1437         g_return_if_fail(item != NULL);
1438         g_return_if_fail(msginfo != NULL);
1439
1440         folder = item->folder;
1441         debug_print("getting session...\n");
1442         session = imap_session_get(folder);
1443
1444         if (!session) {
1445                 debug_print("can't get session\n");
1446                 return;
1447         }
1448
1449         ok = imap_select(session, IMAP_FOLDER(folder), item,
1450                          NULL, NULL, NULL, NULL, &can_create_tags, FALSE);
1451
1452         if (ok != MAILIMAP_NO_ERROR) {
1453                 return;
1454         }
1455
1456
1457         if (IMAP_FOLDER_ITEM(item)->can_create_flags != ITEM_CAN_CREATE_FLAGS)
1458                 return;
1459
1460         if (IMAP_FOLDER_ITEM(item)->batching) {
1461                 /* instead of performing an UID STORE command for each message change,
1462                  * as a lot of them can change "together", we just fill in hashtables
1463                  * and defer the treatment so that we're able to send only one
1464                  * command.
1465                  */
1466                 debug_print("IMAP batch mode on, deferring tags change\n");
1467                 for (cur = tags_set; cur; cur = cur->next) {
1468                         gint cur_tag = GPOINTER_TO_INT(cur->data);
1469                         if (cur_tag) {
1470                                 ht_data = g_hash_table_lookup(IMAP_FOLDER_ITEM(item)->tags_set_table,
1471                                         GINT_TO_POINTER(cur_tag));
1472                                 if (ht_data == NULL) {
1473                                         ht_data = g_new0(TagsData, 1);
1474                                         ht_data->str = g_strdup(tags_get_tag(cur_tag));
1475                                         ht_data->item = IMAP_FOLDER_ITEM(item);
1476                                         g_hash_table_insert(IMAP_FOLDER_ITEM(item)->tags_set_table,
1477                                                 GINT_TO_POINTER(cur_tag), ht_data);
1478                                 }
1479                                 ht_data->msglist = g_slist_prepend(ht_data->msglist, GINT_TO_POINTER(msginfo->msgnum));
1480                         }
1481                 }
1482                 for (cur = tags_unset; cur; cur = cur->next) {
1483                         gint cur_tag = GPOINTER_TO_INT(cur->data);
1484                         if (cur_tag) {
1485                                 ht_data = g_hash_table_lookup(IMAP_FOLDER_ITEM(item)->tags_unset_table,
1486                                         GINT_TO_POINTER(cur_tag));
1487                                 if (ht_data == NULL) {
1488                                         ht_data = g_new0(TagsData, 1);
1489                                         ht_data->str = g_strdup(tags_get_tag(cur_tag));
1490                                         ht_data->item = IMAP_FOLDER_ITEM(item);
1491                                         g_hash_table_insert(IMAP_FOLDER_ITEM(item)->tags_unset_table,
1492                                                 GINT_TO_POINTER(cur_tag), ht_data);
1493                                 }
1494                                 ht_data->msglist = g_slist_prepend(ht_data->msglist, GINT_TO_POINTER(msginfo->msgnum));
1495                         }
1496                 }
1497         } else {
1498                 GSList *list_set = NULL;
1499                 GSList *list_unset = NULL;
1500                 GSList numlist;
1501
1502                 numlist.data = GINT_TO_POINTER(msginfo->msgnum);
1503                 numlist.next = NULL;
1504
1505                 debug_print("IMAP changing tags NOW\n");
1506                 for (cur = tags_set; cur; cur = cur->next) {
1507                         gint cur_tag = GPOINTER_TO_INT(cur->data);
1508                         const gchar *str = tags_get_tag(cur_tag);
1509                         if (IS_NOT_RESERVED_TAG(str))
1510                                 list_set = g_slist_prepend(list_set, g_strdup(str));
1511                 }
1512                 if (list_set) {
1513                         ok = imap_set_message_flags(session,
1514                                 IMAP_FOLDER_ITEM(item), &numlist, 0, list_set, TRUE);
1515                         slist_free_strings_full(list_set);
1516                         if (ok != MAILIMAP_NO_ERROR) {
1517                                 return;
1518                         }
1519                 }
1520
1521                 for (cur = tags_unset; cur; cur = cur->next) {
1522                         gint cur_tag = GPOINTER_TO_INT(cur->data);
1523                         const gchar *str = tags_get_tag(cur_tag);
1524                         if (IS_NOT_RESERVED_TAG(str))
1525                                 list_unset = g_slist_prepend(list_unset, g_strdup(str));
1526                 }
1527                 if (list_unset) {
1528                         ok = imap_set_message_flags(session,
1529                                 IMAP_FOLDER_ITEM(item), &numlist, 0, list_unset, FALSE);
1530                         slist_free_strings_full(list_unset);
1531                         if (ok != MAILIMAP_NO_ERROR) {
1532                                 return;
1533                         }
1534                 }
1535         }
1536 }
1537
1538 static gchar *imap_fetch_msg_full(Folder *folder, FolderItem *item, gint uid,
1539                                   gboolean headers, gboolean body)
1540 {
1541         gchar *path, *filename;
1542         IMAPSession *session;
1543         gint ok;
1544
1545         g_return_val_if_fail(folder != NULL, NULL);
1546         g_return_val_if_fail(item != NULL, NULL);
1547
1548         if (uid == 0)
1549                 return NULL;
1550
1551         path = folder_item_get_path(item);
1552         if (!is_dir_exist(path)) {
1553                 if(is_file_exist(path))
1554                         claws_unlink(path);
1555                 make_dir_hier(path);
1556         }
1557         g_free(path);
1558
1559         filename = imap_get_cached_filename(item, uid);
1560         debug_print("trying to fetch cached %s\n", filename);
1561
1562         if (is_file_exist(filename)) {
1563                 /* see whether the local file represents the whole message
1564                  * or not. As the IMAP server reports size with \r chars,
1565                  * we have to update the local file (UNIX \n only) size */
1566                 MsgInfo *cached = msgcache_get_msg(item->cache,uid);
1567                 guint have_size = -1;
1568
1569                 if (cached)
1570                         debug_print("message %d has been already %scached.\n", uid,
1571                                 MSG_IS_FULLY_CACHED(cached->flags) ? "fully ":"");
1572
1573                 if (!cached || !MSG_IS_FULLY_CACHED(cached->flags)) {
1574                         have_size = get_file_size_with_crs(filename);
1575                         if (cached && (cached->size <= have_size || !body)) {
1576                                 ok = file_strip_crs(filename);
1577                                 if (ok == 0 && cached && cached->size <= have_size) {
1578                                         /* we have it all and stripped */
1579                                         debug_print("...fully cached in fact (%u/%zd); setting flag.\n",
1580                                                         have_size, cached->size);
1581                                         procmsg_msginfo_set_flags(cached, MSG_FULLY_CACHED, 0);
1582                                 }
1583                                 procmsg_msginfo_free(&cached);
1584                                 return filename;
1585                         } else if (!cached && time(NULL) - get_file_mtime(filename) < 60) {
1586                                 debug_print("message not cached and file recent, considering file complete\n");
1587                                 ok = file_strip_crs(filename);
1588                                 if (ok == 0)
1589                                         return filename;
1590                         } else {
1591                                 procmsg_msginfo_free(&cached);
1592                         }
1593                 }
1594                 if (cached && MSG_IS_FULLY_CACHED(cached->flags)) {
1595                         procmsg_msginfo_free(&cached);
1596                         return filename;
1597                 }
1598         } else {
1599                 MsgInfo *cached = msgcache_get_msg(item->cache,uid);
1600                 if (cached) {
1601                         procmsg_msginfo_unset_flags(cached, MSG_FULLY_CACHED, 0);
1602                         procmsg_msginfo_free(&cached);
1603                 }
1604         }
1605
1606         debug_print("getting session...\n");
1607         session = imap_session_get(folder);
1608
1609         if (!session) {
1610                 g_free(filename);
1611                 return NULL;
1612         }
1613         session_set_access_time(SESSION(session));
1614         lock_session(session); /* unlocked later in the function */
1615
1616         debug_print("IMAP fetching messages\n");
1617         ok = imap_select(session, IMAP_FOLDER(folder), item,
1618                          NULL, NULL, NULL, NULL, NULL, FALSE);
1619         if (ok != MAILIMAP_NO_ERROR) {
1620                 g_warning("can't select mailbox %s", item->path);
1621                 g_free(filename);
1622                 return NULL;
1623         }
1624
1625         session_set_access_time(SESSION(session));
1626
1627         debug_print("getting message %d...\n", uid);
1628         ok = imap_cmd_fetch(session, (guint32)uid, filename, headers, body);
1629
1630         if (ok != MAILIMAP_NO_ERROR) {
1631                 g_warning("can't fetch message %d", uid);
1632                 g_free(filename);
1633                 return NULL;
1634         }
1635
1636         session_set_access_time(SESSION(session));
1637         unlock_session(session);
1638
1639         ok = file_strip_crs(filename);
1640
1641         if (ok == 0 && headers && body) {
1642                 MsgInfo *cached = msgcache_get_msg(item->cache,uid);
1643                 if (cached) {
1644                         procmsg_msginfo_set_flags(cached, MSG_FULLY_CACHED, 0);
1645                         procmsg_msginfo_free(&cached);
1646                 }
1647         } else if (ok == -1) {
1648                 MsgInfo *cached = msgcache_get_msg(item->cache,uid);
1649                 if (cached) {
1650                         procmsg_msginfo_unset_flags(cached, MSG_FULLY_CACHED, 0);
1651                         procmsg_msginfo_free(&cached);
1652                 }
1653         }
1654         return filename;
1655 }
1656
1657 static gboolean imap_is_msg_fully_cached(Folder *folder, FolderItem *item, gint uid)
1658 {
1659         gchar *filename;
1660         guint size = 0;
1661         MsgInfo *cached = msgcache_get_msg(item->cache,uid);
1662
1663         if (!cached)
1664                 return FALSE;
1665
1666         if (MSG_IS_FULLY_CACHED(cached->flags)) {
1667                 procmsg_msginfo_free(&cached);
1668                 return TRUE;
1669         }
1670
1671         filename = imap_get_cached_filename(item, uid);
1672
1673         if (is_file_exist(filename)) {
1674                 if (cached && cached->total_size == cached->size) {
1675                         /* fast path */
1676                         g_free(filename);
1677                         procmsg_msginfo_set_flags(cached, MSG_FULLY_CACHED, 0);
1678                         return TRUE;
1679                 }
1680                 size = get_file_size_with_crs(filename);
1681         }
1682         g_free(filename);
1683         debug_print("msg %d cached, has size %d, full should be %zd.\n", uid, size, cached->size);
1684         if (cached && size >= cached->size) {
1685                 cached->total_size = cached->size;
1686                 procmsg_msginfo_set_flags(cached, MSG_FULLY_CACHED, 0);
1687                 procmsg_msginfo_free(&cached);
1688                 return TRUE;
1689         }
1690         if (cached)
1691                 procmsg_msginfo_free(&cached);
1692         return FALSE;
1693 }
1694
1695 void imap_cache_msg(FolderItem *item, gint msgnum)
1696 {
1697         Folder *folder = NULL;
1698
1699         if (!item)
1700                 return;
1701         folder = item->folder;
1702
1703         if (!imap_is_msg_fully_cached(folder, item, msgnum)) {
1704                 gchar *tmp = imap_fetch_msg_full(folder, item, msgnum, TRUE, TRUE);
1705                 debug_print("fetched %s\n", tmp);
1706                 g_free(tmp);
1707         }
1708 }
1709
1710 static gint imap_add_msg(Folder *folder, FolderItem *dest,
1711                          const gchar *file, MsgFlags *flags)
1712 {
1713         gint ret;
1714         GSList file_list;
1715         MsgFileInfo fileinfo;
1716
1717         g_return_val_if_fail(file != NULL, -1);
1718
1719         fileinfo.msginfo = NULL;
1720         fileinfo.file = (gchar *)file;
1721         fileinfo.flags = flags;
1722         file_list.data = &fileinfo;
1723         file_list.next = NULL;
1724
1725         ret = imap_add_msgs(folder, dest, &file_list, NULL);
1726         return ret;
1727 }
1728
1729 static gint imap_add_msgs(Folder *folder, FolderItem *dest, GSList *file_list,
1730                    GHashTable *relation)
1731 {
1732         gchar *destdir;
1733         IMAPSession *session;
1734         guint32 last_uid = 0;
1735         GSList *cur;
1736         MsgFileInfo *fileinfo;
1737         gint ok = MAILIMAP_NO_ERROR;
1738         gint curnum = 0, total = 0;
1739         gboolean missing_uids = FALSE;
1740
1741         g_return_val_if_fail(folder != NULL, -1);
1742         g_return_val_if_fail(dest != NULL, -1);
1743         g_return_val_if_fail(file_list != NULL, -1);
1744
1745         debug_print("getting session...\n");
1746         session = imap_session_get(folder);
1747         if (!session) {
1748                 return -1;
1749         }
1750         destdir = imap_get_real_path(session, IMAP_FOLDER(folder), dest->path, &ok);
1751         if (is_fatal(ok)) {
1752                 g_free(destdir);
1753                 return -1;
1754         }
1755         statusbar_print_all(_("Adding messages..."));
1756         total = g_slist_length(file_list);
1757         for (cur = file_list; cur != NULL; cur = cur->next) {
1758                 IMAPFlags iflags = 0;
1759                 guint32 new_uid = 0;
1760                 gchar *real_file = NULL;
1761                 fileinfo = (MsgFileInfo *)cur->data;
1762
1763                 statusbar_progress_all(curnum, total, total < 10 ? 1:10);
1764                 curnum++;
1765
1766                 if (fileinfo->flags) {
1767                         if (MSG_IS_MARKED(*fileinfo->flags))
1768                                 iflags |= IMAP_FLAG_FLAGGED;
1769                         if (MSG_IS_REPLIED(*fileinfo->flags))
1770                                 iflags |= IMAP_FLAG_ANSWERED;
1771                         if (MSG_IS_FORWARDED(*fileinfo->flags))
1772                                 iflags |= IMAP_FLAG_FORWARDED;
1773                         if (MSG_IS_SPAM(*fileinfo->flags))
1774                                 iflags |= IMAP_FLAG_SPAM;
1775                         else
1776                                 iflags |= IMAP_FLAG_HAM;
1777                         if (!MSG_IS_UNREAD(*fileinfo->flags))
1778                                 iflags |= IMAP_FLAG_SEEN;
1779
1780                 }
1781
1782                 if (real_file == NULL)
1783                         real_file = g_strdup(fileinfo->file);
1784
1785                 if (folder_has_parent_of_type(dest, F_QUEUE) ||
1786                     folder_has_parent_of_type(dest, F_OUTBOX) ||
1787                     folder_has_parent_of_type(dest, F_DRAFT) ||
1788                     folder_has_parent_of_type(dest, F_TRASH))
1789                         iflags |= IMAP_FLAG_SEEN;
1790
1791                 ok = imap_cmd_append(session, IMAP_FOLDER_ITEM(dest), destdir, real_file, iflags,
1792                                      &new_uid);
1793
1794                 if (ok != MAILIMAP_NO_ERROR) {
1795                         g_warning("can't append message %s", real_file);
1796                         g_free(real_file);
1797                         g_free(destdir);
1798                         statusbar_progress_all(0,0,0);
1799                         statusbar_pop_all();
1800                         return -1;
1801                 } else {
1802                         debug_print("appended new message as %d\n", new_uid);
1803                         /* put the local file in the imapcache, so that we don't
1804                          * have to fetch it back later. */
1805
1806                         if (new_uid == 0) {
1807                                 missing_uids = TRUE;
1808                                 debug_print("Missing UID (0)\n");
1809                         }
1810                         if (new_uid > 0) {
1811                                 gchar *cache_path = folder_item_get_path(dest);
1812                                 if (!is_dir_exist(cache_path))
1813                                         make_dir_hier(cache_path);
1814                                 if (is_dir_exist(cache_path)) {
1815                                         gchar *cache_file = g_strconcat(
1816                                                 cache_path, G_DIR_SEPARATOR_S,
1817                                                 itos(new_uid), NULL);
1818                                         copy_file(real_file, cache_file, TRUE);
1819                                         debug_print("got UID %d, copied to cache: %s\n", new_uid, cache_file);
1820                                         g_free(cache_file);
1821                                 }
1822                                 g_free(cache_path);
1823                         }
1824                 }
1825
1826                 if (relation != NULL)
1827                         g_hash_table_insert(relation, fileinfo->msginfo != NULL ?
1828                                           (gpointer) fileinfo->msginfo : (gpointer) fileinfo,
1829                                           GINT_TO_POINTER(new_uid));
1830                 if (last_uid < new_uid) {
1831                         last_uid = new_uid;
1832                 }
1833
1834                 g_free(real_file);
1835         }
1836
1837         statusbar_progress_all(0,0,0);
1838         statusbar_pop_all();
1839
1840
1841         g_free(destdir);
1842
1843         imap_scan_required(folder, dest);
1844
1845         session = imap_session_get(folder);
1846         if (!session) {
1847                 return -1;
1848         }
1849         if (missing_uids) {
1850                 gint a;
1851                 ok = imap_select(session, IMAP_FOLDER(folder), dest,
1852                          &a, NULL, NULL, NULL, NULL, FALSE);
1853         }
1854         return last_uid;
1855 }
1856
1857 static GSList *flatten_mailimap_set(struct mailimap_set * set)
1858 {
1859         GSList *result = NULL;
1860         clistiter *list;
1861         guint32 start, end, t;
1862         GSList *cur;
1863
1864         if (!set || !set->set_list)
1865                 return NULL;
1866
1867         for (list = clist_begin(set->set_list); list; list = clist_next(list)) {
1868                 struct mailimap_set_item *item = (struct mailimap_set_item *)clist_content(list);
1869                 start = item->set_first;
1870                 end = item->set_last;
1871                 if (start <= end) {
1872                         for (t = start; t <= end; t++) {
1873                                 result = g_slist_prepend(result, GINT_TO_POINTER(t));
1874                         }
1875                 }
1876         }
1877         result = g_slist_reverse(result);
1878         if (debug_get_mode()) {
1879                 debug_print("flat imap set: ");
1880                 for (cur = result; cur; cur = cur->next) {
1881                         debug_print("%d ", GPOINTER_TO_INT(cur->data));
1882                 }
1883                 debug_print("\n");
1884         }
1885
1886         return result;
1887 }
1888 static gint imap_do_copy_msgs(Folder *folder, FolderItem *dest,
1889                               MsgInfoList *msglist, GHashTable *relation,
1890                               gboolean same_dest_ok)
1891 {
1892         FolderItem *src;
1893         gchar *destdir;
1894         GSList *seq_list, *cur;
1895         MsgInfo *msginfo;
1896         IMAPSession *session;
1897         gint ok = MAILIMAP_NO_ERROR;
1898         GHashTable *uid_hash;
1899         gint last_num = 0;
1900
1901         g_return_val_if_fail(folder != NULL, -1);
1902         g_return_val_if_fail(dest != NULL, -1);
1903         g_return_val_if_fail(msglist != NULL, -1);
1904
1905         debug_print("getting session...\n");
1906         session = imap_session_get(folder);
1907
1908         if (!session) {
1909                 return -1;
1910         }
1911
1912         msginfo = (MsgInfo *)msglist->data;
1913         src = msginfo->folder;
1914         if (!same_dest_ok && src == dest) {
1915                 g_warning("the src folder is identical to the dest.");
1916                 return -1;
1917         }
1918
1919         if (src->folder != dest->folder) {
1920                 GSList *infolist = NULL, *cur;
1921                 int res = -1;
1922                 for (cur = msglist; cur; cur = cur->next) {
1923                         msginfo = (MsgInfo *)cur->data;
1924                         MsgFileInfo *fileinfo = g_new0(MsgFileInfo, 1);
1925                         fileinfo->file = procmsg_get_message_file(msginfo);
1926                         fileinfo->flags = &(msginfo->flags);
1927                         infolist = g_slist_prepend(infolist, fileinfo);
1928                 }
1929                 infolist = g_slist_reverse(infolist);
1930                 res = folder_item_add_msgs(dest, infolist, FALSE);
1931                 for (cur = infolist; cur; cur = cur->next) {
1932                         MsgFileInfo *info = (MsgFileInfo *)cur->data;
1933                         g_free(info->file);
1934                         g_free(info);
1935                 }
1936                 g_slist_free(infolist);
1937                 return res;
1938         }
1939
1940         lock_session(session); /* unlocked later in the function */
1941
1942         ok = imap_select(session, IMAP_FOLDER(folder), msginfo->folder,
1943                          NULL, NULL, NULL, NULL, NULL, FALSE);
1944         if (ok != MAILIMAP_NO_ERROR) {
1945                 return ok;
1946         }
1947
1948         unlock_session(session);
1949
1950         destdir = imap_get_real_path(session, IMAP_FOLDER(folder), dest->path, &ok);
1951
1952         if (is_fatal(ok)) {
1953                 g_free(destdir);
1954                 return ok;
1955         }
1956
1957         seq_list = imap_get_lep_set_from_msglist(IMAP_FOLDER(folder), msglist);
1958         uid_hash = g_hash_table_new(g_direct_hash, g_direct_equal);
1959
1960         statusbar_print_all(_("Copying messages..."));
1961         for (cur = seq_list; cur != NULL; cur = g_slist_next(cur)) {
1962                 struct mailimap_set * seq_set;
1963                 struct mailimap_set * source = NULL;
1964                 struct mailimap_set * dest = NULL;
1965                 seq_set = cur->data;
1966
1967                 debug_print("Copying messages from %s to %s ...\n",
1968                             src->path, destdir);
1969
1970                 lock_session(session); /* unlocked later in the function */
1971                 ok = imap_cmd_copy(session, seq_set, destdir,
1972                         &source, &dest);
1973
1974                 if (is_fatal(ok)) {
1975                         session = NULL;
1976                 }
1977
1978                 if (ok == MAILIMAP_NO_ERROR) {
1979                         unlock_session(session);
1980                         if (relation && source && dest) {
1981                                 GSList *s_list = flatten_mailimap_set(source);
1982                                 GSList *d_list = flatten_mailimap_set(dest);
1983                                 GSList *s_cur, *d_cur;
1984                                 if (g_slist_length(s_list) == g_slist_length(d_list)) {
1985
1986                                         for (s_cur = s_list, d_cur = d_list;
1987                                              s_cur && d_cur;
1988                                              s_cur = s_cur->next, d_cur = d_cur->next) {
1989                                                 g_hash_table_insert(uid_hash, s_cur->data, d_cur->data);
1990                                         }
1991
1992                                 } else {
1993                                         debug_print("hhhmm, source list length != dest list length.\n");
1994                                 }
1995                                 g_slist_free(s_list);
1996                                 g_slist_free(d_list);
1997                         }
1998                 }
1999
2000
2001                 if (source)
2002                         mailimap_set_free(source);
2003                 if (dest)
2004                         mailimap_set_free(dest);
2005
2006                 if (ok != MAILIMAP_NO_ERROR) {
2007                         g_hash_table_destroy(uid_hash);
2008                         imap_lep_set_free(seq_list);
2009                         statusbar_pop_all();
2010                         return -1;
2011                 }
2012         }
2013
2014         for (cur = msglist; cur != NULL; cur = g_slist_next(cur)) {
2015                 MsgInfo *msginfo = (MsgInfo *)cur->data;
2016                 gpointer hashval;
2017
2018                 hashval = g_hash_table_lookup(uid_hash, GINT_TO_POINTER(msginfo->msgnum));
2019
2020                 if (hashval != NULL) {
2021                         gint num = GPOINTER_TO_INT(hashval);
2022                         g_hash_table_insert(relation, msginfo,
2023                                           GINT_TO_POINTER(num));
2024                         if (num > last_num)
2025                                 last_num = num;
2026                         debug_print("copied message %d as %d\n", msginfo->msgnum, num);
2027                         /* put the local file in the imapcache, so that we don't
2028                          * have to fetch it back later. */
2029                         if (num > 0) {
2030                                 gchar *cache_path = folder_item_get_path(msginfo->folder);
2031                                 gchar *real_file = g_strconcat(
2032                                         cache_path, G_DIR_SEPARATOR_S,
2033                                         itos(msginfo->msgnum), NULL);
2034                                 gchar *cache_file = NULL;
2035                                 g_free(cache_path);
2036                                 cache_path = folder_item_get_path(dest);
2037                                 cache_file = g_strconcat(
2038                                         cache_path, G_DIR_SEPARATOR_S,
2039                                         itos(num), NULL);
2040                                 if (!is_dir_exist(cache_path))
2041                                         make_dir_hier(cache_path);
2042                                 if (is_file_exist(real_file) && is_dir_exist(cache_path)) {
2043                                         if (copy_file(real_file, cache_file, TRUE) < 0)
2044                                                 debug_print("couldn't cache to %s: %s\n", cache_file,
2045                                                             strerror(errno));
2046                                         else
2047                                                 debug_print("copied to cache: %s\n", cache_file);
2048                                 }
2049                                 g_free(real_file);
2050                                 g_free(cache_file);
2051                                 g_free(cache_path);
2052                         }
2053                 } else
2054                         g_hash_table_insert(relation, msginfo,
2055                                           GINT_TO_POINTER(0));
2056         }
2057         statusbar_pop_all();
2058
2059         g_hash_table_destroy(uid_hash);
2060         imap_lep_set_free(seq_list);
2061
2062         g_free(destdir);
2063
2064         IMAP_FOLDER_ITEM(dest)->lastuid = 0;
2065         IMAP_FOLDER_ITEM(dest)->uid_next = 0;
2066         g_slist_free(IMAP_FOLDER_ITEM(dest)->uid_list);
2067         IMAP_FOLDER_ITEM(dest)->uid_list = NULL;
2068
2069         imap_scan_required(folder, dest);
2070         if (ok == MAILIMAP_NO_ERROR)
2071                 return last_num;
2072         else
2073                 return -1;
2074 }
2075
2076 static gint imap_copy_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
2077 {
2078         GSList msglist;
2079
2080         g_return_val_if_fail(msginfo != NULL, -1);
2081
2082         msglist.data = msginfo;
2083         msglist.next = NULL;
2084
2085         return imap_copy_msgs(folder, dest, &msglist, NULL);
2086 }
2087
2088 static gint imap_copy_msgs(Folder *folder, FolderItem *dest,
2089                     MsgInfoList *msglist, GHashTable *relation)
2090 {
2091         MsgInfo *msginfo;
2092         gint ret;
2093
2094         g_return_val_if_fail(folder != NULL, -1);
2095         g_return_val_if_fail(dest != NULL, -1);
2096         g_return_val_if_fail(msglist != NULL, -1);
2097
2098         msginfo = (MsgInfo *)msglist->data;
2099         g_return_val_if_fail(msginfo->folder != NULL, -1);
2100
2101         ret = imap_do_copy_msgs(folder, dest, msglist, relation, FALSE);
2102         return ret;
2103 }
2104
2105 static gboolean imap_matcher_type_is_local(gint matchertype)
2106 {
2107         switch (matchertype) {
2108         case MATCHCRITERIA_FROM:
2109         case MATCHCRITERIA_TO:
2110         case MATCHCRITERIA_CC:
2111         case MATCHCRITERIA_TO_OR_CC:
2112         case MATCHCRITERIA_SUBJECT:
2113         case MATCHCRITERIA_REFERENCES:
2114         case MATCHCRITERIA_MESSAGEID:
2115         case MATCHCRITERIA_INREPLYTO:
2116         case MATCHCRITERIA_AGE_GREATER:
2117         case MATCHCRITERIA_AGE_LOWER:
2118         case MATCHCRITERIA_FORWARDED:
2119         case MATCHCRITERIA_SPAM:
2120         case MATCHCRITERIA_UNREAD:
2121         case MATCHCRITERIA_NEW:
2122         case MATCHCRITERIA_MARKED:
2123         case MATCHCRITERIA_REPLIED:
2124         case MATCHCRITERIA_DELETED:
2125         case MATCHCRITERIA_SIZE_GREATER:
2126         case MATCHCRITERIA_SIZE_SMALLER:
2127         case MATCHCRITERIA_SIZE_EQUAL:
2128                 return TRUE;
2129         }
2130         return FALSE;
2131 }
2132
2133 static IMAPSearchKey* search_make_key(MatcherProp* match, gboolean* is_all)
2134 {
2135         if (match->matchtype == MATCHTYPE_MATCHCASE || match->matchtype == MATCHTYPE_MATCH) {
2136                 IMAPSearchKey* result = NULL;
2137                 gboolean invert = FALSE;
2138                 gint matchertype = match->criteria;
2139
2140                 if (is_all) {
2141                         *is_all = FALSE;
2142                 }
2143
2144                 switch (matchertype) {
2145                 case MATCHCRITERIA_NOT_NEW: invert = TRUE; matchertype = MATCHCRITERIA_NEW; break;
2146                 case MATCHCRITERIA_NOT_MARKED: invert = TRUE; matchertype = MATCHCRITERIA_MARKED; break;
2147                 case MATCHCRITERIA_NOT_FORWARDED: invert = TRUE; matchertype = MATCHCRITERIA_FORWARDED; break;
2148                 case MATCHCRITERIA_NOT_SPAM: invert = TRUE; matchertype = MATCHCRITERIA_SPAM; break;
2149                 case MATCHCRITERIA_NOT_SUBJECT: invert = TRUE; matchertype = MATCHCRITERIA_SUBJECT; break;
2150                 case MATCHCRITERIA_NOT_FROM: invert = TRUE; matchertype = MATCHCRITERIA_FROM; break;
2151                 case MATCHCRITERIA_NOT_TO: invert = TRUE; matchertype = MATCHCRITERIA_TO; break;
2152                 case MATCHCRITERIA_NOT_CC: invert = TRUE; matchertype = MATCHCRITERIA_CC; break;
2153                 case MATCHCRITERIA_NOT_REFERENCES: invert = TRUE; matchertype = MATCHCRITERIA_REFERENCES; break;
2154                 case MATCHCRITERIA_NOT_HEADER: invert = TRUE; matchertype = MATCHCRITERIA_HEADER; break;
2155                 case MATCHCRITERIA_NOT_TAG: invert = TRUE; matchertype = MATCHCRITERIA_TAG; break;
2156                 case MATCHCRITERIA_NOT_HEADERS_PART: invert = TRUE; matchertype = MATCHCRITERIA_HEADERS_PART; break;
2157                 case MATCHCRITERIA_NOT_HEADERS_CONT: invert = TRUE; matchertype = MATCHCRITERIA_HEADERS_CONT; break;
2158                 case MATCHCRITERIA_NOT_MESSAGE: invert = TRUE; matchertype = MATCHCRITERIA_MESSAGE; break;
2159                 case MATCHCRITERIA_NOT_BODY_PART: invert = TRUE; matchertype = MATCHCRITERIA_BODY_PART; break;
2160                 case MATCHCRITERIA_NOT_TO_AND_NOT_CC: invert = TRUE; matchertype = MATCHCRITERIA_TO_OR_CC; break;
2161                 case MATCHCRITERIA_NOT_MESSAGEID: invert = TRUE; matchertype = MATCHCRITERIA_MESSAGEID; break;
2162                 case MATCHCRITERIA_NOT_INREPLYTO: invert = TRUE; matchertype = MATCHCRITERIA_INREPLYTO; break;
2163                 }
2164
2165                 /*
2166                  * this aborts conversion even for predicates understood by the following code.
2167                  * while that might seem wasteful, claws local search for information listed below
2168                  * has proven faster than IMAP search plus network roundtrips. once this changes,
2169                  * consider removing these exceptions.
2170                  */
2171                 if (imap_matcher_type_is_local(matchertype))
2172                         return NULL;
2173
2174                 /* the Message-ID header is also cached */
2175                 if (matchertype == MATCHCRITERIA_HEADER && g_strcmp0("Message-ID", match->header) == 0) {
2176                         return NULL;
2177                 }
2178
2179                 switch (matchertype) {
2180                 case MATCHCRITERIA_FORWARDED:
2181                         result = imap_search_new(IMAP_SEARCH_CRITERIA_TAG, NULL, RTAG_FORWARDED, 0);
2182                         break;
2183
2184                 case MATCHCRITERIA_SPAM:
2185                         result = imap_search_new(IMAP_SEARCH_CRITERIA_TAG, NULL, RTAG_JUNK, 0);
2186                         break;
2187
2188                 case MATCHCRITERIA_MESSAGEID:
2189                         result = imap_search_new(IMAP_SEARCH_CRITERIA_HEADER, "Message-ID", match->expr, 0);
2190                         break;
2191
2192                 case MATCHCRITERIA_INREPLYTO:
2193                         result = imap_search_new(IMAP_SEARCH_CRITERIA_HEADER, "In-Reply-To", match->expr, 0);
2194                         break;
2195
2196                 case MATCHCRITERIA_REFERENCES:
2197                         result = imap_search_new(IMAP_SEARCH_CRITERIA_HEADER, "References", match->expr, 0);
2198                         break;
2199
2200                 case MATCHCRITERIA_TO_OR_CC:
2201                         result = imap_search_or(
2202                                         imap_search_new(IMAP_SEARCH_CRITERIA_TO, NULL, match->expr, 0),
2203                                         imap_search_new(IMAP_SEARCH_CRITERIA_CC, NULL, match->expr, 0)
2204                                         );
2205                         break;
2206
2207                 case MATCHCRITERIA_HEADERS_PART:
2208                 case MATCHCRITERIA_HEADERS_CONT:
2209                         result = imap_search_and(
2210                                         imap_search_not(imap_search_new(IMAP_SEARCH_CRITERIA_BODY, NULL, match->expr, 0)),
2211                                         imap_search_new(IMAP_SEARCH_CRITERIA_MESSAGE, NULL, match->expr, 0)
2212                                         );
2213                         break;
2214
2215                 case MATCHCRITERIA_SIZE_EQUAL:
2216                         result = imap_search_and(
2217                                         imap_search_not(imap_search_new(IMAP_SEARCH_CRITERIA_SIZE_SMALLER, NULL, NULL, match->value)),
2218                                         imap_search_not(imap_search_new(IMAP_SEARCH_CRITERIA_SIZE_GREATER, NULL, NULL, match->value))
2219                                         );
2220                         break;
2221
2222                 case MATCHCRITERIA_NOT_UNREAD:
2223                         result = imap_search_new(IMAP_SEARCH_CRITERIA_READ, NULL, NULL, 0);
2224                         break;
2225
2226                 case MATCHCRITERIA_UNREAD:
2227                         result = imap_search_new(IMAP_SEARCH_CRITERIA_UNREAD, NULL, NULL, 0);
2228                         break;
2229
2230                 case MATCHCRITERIA_NEW:
2231                         result = imap_search_new(IMAP_SEARCH_CRITERIA_NEW, NULL, NULL, 0);
2232                         break;
2233
2234                 case MATCHCRITERIA_MARKED:
2235                         result = imap_search_new(IMAP_SEARCH_CRITERIA_MARKED, NULL, NULL, 0);
2236                         break;
2237
2238                 case MATCHCRITERIA_DELETED:
2239                         result = imap_search_new(IMAP_SEARCH_CRITERIA_DELETED, NULL, NULL, 0);
2240                         break;
2241
2242                 case MATCHCRITERIA_REPLIED:
2243                         result = imap_search_new(IMAP_SEARCH_CRITERIA_REPLIED, NULL, NULL, 0);
2244                         break;
2245
2246                 case MATCHCRITERIA_TAG:
2247                         {
2248                                 gchar *tmp = imap_utf8_to_modified_utf7(match->expr, TRUE);
2249                                 result = imap_search_new(IMAP_SEARCH_CRITERIA_TAG, NULL, tmp, 0);
2250                                 g_free(tmp);
2251                         }
2252                         break;
2253
2254                 case MATCHCRITERIA_SUBJECT:
2255                         result = imap_search_new(IMAP_SEARCH_CRITERIA_SUBJECT, NULL, match->expr, 0);
2256                         break;
2257
2258                 case MATCHCRITERIA_FROM:
2259                         result = imap_search_new(IMAP_SEARCH_CRITERIA_FROM, NULL, match->expr, 0);
2260                         break;
2261
2262                 case MATCHCRITERIA_TO:
2263                         result = imap_search_new(IMAP_SEARCH_CRITERIA_TO, NULL, match->expr, 0);
2264                         break;
2265
2266                 case MATCHCRITERIA_CC:
2267                         result = imap_search_new(IMAP_SEARCH_CRITERIA_CC, NULL, match->expr, 0);
2268                         break;
2269
2270                 case MATCHCRITERIA_AGE_GREATER:
2271                         result = imap_search_new(IMAP_SEARCH_CRITERIA_AGE_GREATER, NULL, NULL, match->value);
2272                         break;
2273
2274                 case MATCHCRITERIA_AGE_LOWER:
2275                         result = imap_search_new(IMAP_SEARCH_CRITERIA_AGE_LOWER, NULL, NULL, match->value);
2276                         break;
2277
2278                 case MATCHCRITERIA_BODY_PART:
2279                         result = imap_search_new(IMAP_SEARCH_CRITERIA_BODY, NULL, match->expr, 0);
2280                         break;
2281
2282                 case MATCHCRITERIA_MESSAGE:
2283                         result = imap_search_new(IMAP_SEARCH_CRITERIA_MESSAGE, NULL, match->expr, 0);
2284                         break;
2285
2286                 case MATCHCRITERIA_HEADER:
2287                         result = imap_search_new(IMAP_SEARCH_CRITERIA_HEADER, match->header, match->expr, 0);
2288                         break;
2289
2290                 case MATCHCRITERIA_SIZE_GREATER:
2291                         result = imap_search_new(IMAP_SEARCH_CRITERIA_SIZE_GREATER, NULL, NULL, match->value);
2292                         break;
2293
2294                 case MATCHCRITERIA_SIZE_SMALLER:
2295                         result = imap_search_new(IMAP_SEARCH_CRITERIA_SIZE_SMALLER, NULL, NULL, match->value);
2296                         break;
2297
2298                 default:
2299                         result = imap_search_new(IMAP_SEARCH_CRITERIA_ALL, NULL, NULL, 0);
2300                         if (is_all) {
2301                                 *is_all = TRUE;
2302                         }
2303                         break;
2304                 }
2305
2306                 if (invert) {
2307                         result = imap_search_not(result);
2308                         if (is_all && *is_all) {
2309                                 *is_all = FALSE;
2310                         }
2311                 }
2312
2313                 return result;
2314         }
2315
2316         return NULL;
2317 }
2318
2319 static void imap_change_search_charset(IMAPFolder *folder)
2320 {
2321         /* If server supports charset in searches, but the last used one failed,
2322          * changed to the next preferred charset. If none are still available,
2323          * disable charset searches.
2324          * Charsets are tried in the following order:
2325          * UTF-8, locale's charset, UTF-7.
2326          */
2327
2328         if (folder->search_charset_supported) {
2329                 if (folder->search_charset && !strcmp(folder->search_charset, conv_get_locale_charset_str_no_utf8()))
2330                         folder->search_charset = "UTF-8";
2331                 else if (folder->search_charset && !strcmp(folder->search_charset, "UTF-8"))
2332                         folder->search_charset = "UTF-7";
2333                 else {
2334                         folder->search_charset = NULL;
2335                         folder->search_charset_supported = FALSE;
2336                 }
2337         }
2338 }
2339
2340 static MatcherProp *imap_matcher_prop_set_charset(IMAPFolder *folder,
2341                                                   MatcherProp *utf8_prop,
2342                                                   gchar **charset)
2343 {
2344         /* If the match is going to be done locally, or the criteria is on
2345          * tag (special-cased to modified-UTF-7), or the expression searched
2346          * is ASCII, don't bother converting.
2347          */
2348         if (imap_matcher_type_is_local(utf8_prop->criteria)
2349          || utf8_prop->criteria == MATCHCRITERIA_TAG
2350          || utf8_prop->criteria == MATCHCRITERIA_NOT_TAG
2351          || utf8_prop->expr == NULL
2352          || is_ascii_str(utf8_prop->expr))
2353                 return matcherprop_new(utf8_prop->criteria,
2354                                utf8_prop->header,
2355                                utf8_prop->matchtype,
2356                                utf8_prop->expr,
2357                                utf8_prop->value);
2358         else {
2359                 gchar *conv_expr = NULL;
2360
2361                 /* If the search is server-side and the server doesn't support
2362                  * searching with the charsets we handle, bail out.
2363                  */
2364                 if (folder->search_charset_supported == FALSE)
2365                         return NULL;
2366
2367                 /* Else, convert. */
2368                 if (*charset == NULL)
2369                         *charset = g_strdup(folder->search_charset);
2370
2371                 conv_expr = conv_codeset_strdup(utf8_prop->expr, CS_UTF_8, *charset);
2372
2373                 if (conv_expr == NULL)
2374                         conv_expr = g_strdup(utf8_prop->expr);
2375
2376                 return matcherprop_new(utf8_prop->criteria,
2377                                utf8_prop->header,
2378                                utf8_prop->matchtype,
2379                                conv_expr,
2380                                utf8_prop->value);
2381         }
2382 }
2383
2384 static gint     search_msgs             (Folder                 *folder,
2385                                          FolderItem             *container,
2386                                          MsgNumberList          **msgs,
2387                                          gboolean               *on_server,
2388                                          MatcherList            *predicate,
2389                                          SearchProgressNotify   progress_cb,
2390                                          gpointer               progress_data)
2391 {
2392         IMAPSearchKey* key = NULL;
2393         GSList* cur;
2394         int result = -1;
2395         clist* uidlist = NULL;
2396         gboolean server_filtering_useless = FALSE;
2397         IMAPSession *session;
2398         gchar *charset_to_use = NULL;
2399
2400         if (on_server == NULL || !*on_server) {
2401                 return folder_item_search_msgs_local(folder, container, msgs, on_server,
2402                                 predicate, progress_cb, progress_data);
2403         }
2404
2405         for (cur = predicate->matchers; cur != NULL; cur = cur->next) {
2406                 IMAPSearchKey* matcherPart = NULL;
2407                 MatcherProp* prop = (MatcherProp*) cur->data;
2408                 gboolean is_all;
2409                 MatcherProp *imap_prop = imap_matcher_prop_set_charset(IMAP_FOLDER(folder), prop, &charset_to_use);
2410
2411                 if (imap_prop == NULL) {
2412                         /* Couldn't convert matcherprop to IMAP - probably not ascii
2413                          * and server doesn't support the charsets we do. */
2414                          return -1;
2415                 }
2416
2417                 matcherPart = search_make_key(imap_prop, &is_all);
2418
2419                 matcherprop_free(imap_prop);
2420
2421                 if (on_server) {
2422                         *on_server &= matcherPart != NULL && prop->matchtype == MATCHTYPE_MATCHCASE;
2423                 }
2424
2425                 if (matcherPart) {
2426                         if (key == NULL) {
2427                                 key = matcherPart;
2428                                 server_filtering_useless = is_all;
2429                         } else if (predicate->bool_and) {
2430                                 key = imap_search_and(key, matcherPart);
2431                                 server_filtering_useless &= is_all;
2432                         } else {
2433                                 key = imap_search_or(key, matcherPart);
2434                                 server_filtering_useless |= is_all;
2435                         }
2436                 }
2437         }
2438
2439         if (server_filtering_useless) {
2440                 imap_search_free(key);
2441                 key = NULL;
2442         }
2443
2444         if (key == NULL && progress_cb != NULL) {
2445                 GSList* cur;
2446                 GSList* list;
2447                 int count = 0;
2448
2449                 progress_cb(progress_data, TRUE, 0, 0, container->total_msgs);
2450                 progress_cb(progress_data, TRUE, container->total_msgs, 0, container->total_msgs);
2451
2452                 list = folder_item_get_msg_list(container);
2453                 for (cur = list; cur != NULL; cur = cur->next) {
2454                         *msgs = g_slist_prepend(*msgs, GUINT_TO_POINTER(((MsgInfo*) cur->data)->msgnum));
2455                         count++;
2456                 }
2457                 procmsg_msg_list_free(list);
2458
2459                 *msgs = g_slist_reverse(*msgs);
2460
2461                 return count;
2462         }
2463
2464         session = imap_session_get(folder);
2465         if (!session) {
2466                 return -1;
2467         }
2468         result = imap_select(session, IMAP_FOLDER(folder), FOLDER_ITEM(container),
2469                          NULL, NULL, NULL, NULL, NULL, TRUE);
2470         if (result != MAILIMAP_NO_ERROR)
2471                 return -1;
2472
2473         if (progress_cb)
2474                 progress_cb(progress_data, TRUE, 0, 0, container->total_msgs);
2475         result = imap_threaded_search(folder, IMAP_SEARCH_TYPE_KEYED, key, charset_to_use, NULL, &uidlist);
2476         if (progress_cb)
2477                 progress_cb(progress_data, TRUE, container->total_msgs, 0, container->total_msgs);
2478
2479         if (result == MAILIMAP_NO_ERROR) {
2480                 gint result = 0;
2481
2482                 *msgs = imap_uid_list_from_lep(uidlist, &result);
2483
2484                 mailimap_search_result_free(uidlist);
2485
2486                 if (charset_to_use != NULL)
2487                         g_free(charset_to_use);
2488
2489                 return result;
2490         } else if (charset_to_use != NULL) {
2491                 /* If search failed and was on an 8-bit string, try the next
2492                  * available charset to search if there still are some.
2493                  */
2494                 g_free(charset_to_use);
2495
2496                 imap_change_search_charset(IMAP_FOLDER(folder));
2497                 if (IMAP_FOLDER(folder)->search_charset_supported)
2498                         return search_msgs(folder, container, msgs, on_server, predicate,
2499                                    progress_cb, progress_data);
2500                 else
2501                         return -1;
2502         } else {
2503                 return -1;
2504         }
2505 }
2506
2507
2508 static gint imap_do_remove_msgs(Folder *folder, FolderItem *dest,
2509                                 MsgInfoList *msglist, GHashTable *relation)
2510 {
2511         gchar *destdir, *dir;
2512         GSList *numlist = NULL, *cur;
2513         MsgInfo *msginfo;
2514         IMAPSession *session;
2515         gint ok = MAILIMAP_NO_ERROR;
2516
2517         g_return_val_if_fail(folder != NULL, -1);
2518         g_return_val_if_fail(dest != NULL, -1);
2519         g_return_val_if_fail(msglist != NULL, -1);
2520
2521         debug_print("getting session...\n");
2522         session = imap_session_get(folder);
2523         if (!session) {
2524                 return -1;
2525         }
2526
2527         lock_session(session); /* unlocked later in the function */
2528
2529         msginfo = (MsgInfo *)msglist->data;
2530
2531         ok = imap_select(session, IMAP_FOLDER(folder), msginfo->folder,
2532                          NULL, NULL, NULL, NULL, NULL, FALSE);
2533         if (ok != MAILIMAP_NO_ERROR) {
2534                 return ok;
2535         }
2536
2537         destdir = imap_get_real_path(session, IMAP_FOLDER(folder), dest->path, &ok);
2538         if (is_fatal(ok)) {
2539                 g_free(destdir);
2540                 return ok;
2541         }
2542         for (cur = msglist; cur; cur = cur->next) {
2543                 msginfo = (MsgInfo *)cur->data;
2544                 if (!MSG_IS_DELETED(msginfo->flags))
2545                         numlist = g_slist_prepend(numlist, GINT_TO_POINTER(msginfo->msgnum));
2546         }
2547         numlist = g_slist_reverse(numlist);
2548
2549         if (numlist != NULL) {
2550                 ok = imap_set_message_flags
2551                         (session, IMAP_FOLDER_ITEM(msginfo->folder), numlist, IMAP_FLAG_DELETED, NULL, TRUE);
2552                 if (ok != MAILIMAP_NO_ERROR) {
2553                         log_warning(LOG_PROTOCOL, _("can't set deleted flags\n"));
2554                         g_free(destdir);
2555                         return ok;
2556                 }
2557         } /* else we just need to expunge */
2558         ok = imap_cmd_expunge(session, folder->account->imap_use_trash);
2559         if (ok != MAILIMAP_NO_ERROR) {
2560                 log_warning(LOG_PROTOCOL, _("can't expunge\n"));
2561                 g_free(destdir);
2562                 return ok;
2563         }
2564
2565         session->folder_content_changed = TRUE;
2566         unlock_session(session);
2567
2568         dir = folder_item_get_path(msginfo->folder);
2569         if (is_dir_exist(dir)) {
2570                 for (cur = msglist; cur; cur = cur->next) {
2571                         msginfo = (MsgInfo *)cur->data;
2572                         remove_numbered_files(dir, msginfo->msgnum, msginfo->msgnum);
2573                 }
2574         }
2575         g_free(dir);
2576
2577         g_slist_free(numlist);
2578
2579         imap_scan_required(folder, dest);
2580
2581         g_free(destdir);
2582
2583         return 0;
2584 }
2585
2586 static gint imap_remove_msgs(Folder *folder, FolderItem *dest,
2587                     MsgInfoList *msglist, GHashTable *relation)
2588 {
2589         MsgInfo *msginfo;
2590
2591         g_return_val_if_fail(folder != NULL, -1);
2592         g_return_val_if_fail(dest != NULL, -1);
2593         if (msglist == NULL)
2594                 return 0;
2595
2596         msginfo = (MsgInfo *)msglist->data;
2597         g_return_val_if_fail(msginfo->folder != NULL, -1);
2598
2599         return imap_do_remove_msgs(folder, dest, msglist, relation);
2600 }
2601
2602 static gint imap_remove_all_msg(Folder *folder, FolderItem *item)
2603 {
2604         GSList *list = folder_item_get_msg_list(item);
2605         gint res = imap_remove_msgs(folder, item, list, NULL);
2606         procmsg_msg_list_free(list);
2607         return res;
2608 }
2609
2610 static gboolean imap_is_msg_changed(Folder *folder, FolderItem *item,
2611                                     MsgInfo *msginfo)
2612 {
2613         /* TODO: properly implement this method */
2614         return FALSE;
2615 }
2616
2617 static gint imap_close(Folder *folder, FolderItem *item)
2618 {
2619         return 0;
2620 }
2621
2622 static gint imap_scan_tree_real(Folder *folder, gboolean subs_only)
2623 {
2624         FolderItem *item = NULL;
2625         IMAPSession *session;
2626         gchar *root_folder = NULL;
2627
2628         g_return_val_if_fail(folder != NULL, -1);
2629         g_return_val_if_fail(folder->account != NULL, -1);
2630
2631         debug_print("getting session...\n");
2632         session = imap_session_get(folder);
2633         if (!session) {
2634                 if (!folder->node) {
2635                         folder_tree_destroy(folder);
2636                         item = folder_item_new(folder, folder->name, NULL);
2637                         item->folder = folder;
2638                         folder->node = item->node = g_node_new(item);
2639                 }
2640                 return -1;
2641         }
2642
2643         if (folder->account->imap_dir && *folder->account->imap_dir) {
2644                 gchar *real_path;
2645                 int r = MAILIMAP_NO_ERROR;
2646                 clist * lep_list;
2647
2648                 Xstrdup_a(root_folder, folder->account->imap_dir, {return -1;});
2649                 extract_quote(root_folder, '"');
2650                 subst_char(root_folder,
2651                            imap_get_path_separator(session, IMAP_FOLDER(folder),
2652                                                    root_folder, &r),
2653                            '/');
2654                 if (is_fatal(r))
2655                         return -1;
2656                 strtailchomp(root_folder, '/');
2657                 real_path = imap_get_real_path
2658                         (session, IMAP_FOLDER(folder), root_folder, &r);
2659                 if (is_fatal(r)) {
2660                         g_free(real_path);
2661                         return -1;
2662                 }
2663                 debug_print("IMAP root directory: %s\n", real_path);
2664
2665                 /* check if root directory exist */
2666
2667                 r = imap_threaded_list(session->folder, "", real_path,
2668                                        &lep_list);
2669
2670                 if (r != MAILIMAP_NO_ERROR)
2671                         imap_handle_error(SESSION(session), NULL, r);
2672
2673                 if ((r != MAILIMAP_NO_ERROR) || (clist_count(lep_list) == 0)) {
2674                         if (!folder->node) {
2675                                 item = folder_item_new(folder, folder->name, NULL);
2676                                 item->folder = folder;
2677                                 folder->node = item->node = g_node_new(item);
2678                         }
2679                         return -1;
2680                 }
2681                 mailimap_list_result_free(lep_list);
2682
2683                 g_free(real_path);
2684         }
2685
2686         if (folder->node)
2687                 item = FOLDER_ITEM(folder->node->data);
2688
2689         if (item && !item->path && root_folder) {
2690                 item->path = g_strdup(root_folder);
2691         }
2692
2693         if (!item || ((item->path || root_folder) &&
2694                       strcmp2(item->path, root_folder) != 0)) {
2695                 folder_tree_destroy(folder);
2696                 item = folder_item_new(folder, folder->name, root_folder);
2697                 item->folder = folder;
2698                 folder->node = item->node = g_node_new(item);
2699         }
2700
2701         imap_scan_tree_recursive(session, FOLDER_ITEM(folder->node->data), subs_only);
2702         imap_create_missing_folders(folder);
2703
2704         return 0;
2705 }
2706
2707 static gint imap_scan_tree(Folder *folder)
2708 {
2709         gboolean subs_only = FALSE;
2710         if (folder->account) {
2711                 debug_print(" scanning only subs %d\n", folder->account->imap_subsonly);
2712                 subs_only = folder->account->imap_subsonly;
2713         }
2714         return imap_scan_tree_real(folder, subs_only);
2715 }
2716
2717 static gint imap_scan_tree_recursive(IMAPSession *session, FolderItem *item, gboolean subs_only)
2718 {
2719         Folder *folder;
2720         IMAPFolder *imapfolder;
2721         FolderItem *new_item;
2722         GSList *item_list, *cur;
2723         GNode *node;
2724         gchar *real_path;
2725         gchar *wildcard_path;
2726         gchar separator;
2727         gchar wildcard[3];
2728         clist * lep_list;
2729         int r = MAILIMAP_NO_ERROR;
2730
2731         g_return_val_if_fail(item != NULL, -1);
2732         g_return_val_if_fail(item->folder != NULL, -1);
2733         g_return_val_if_fail(item->no_sub == FALSE, -1);
2734
2735         folder = item->folder;
2736         imapfolder = IMAP_FOLDER(folder);
2737
2738         separator = imap_get_path_separator(session, imapfolder, item->path, &r);
2739         if (is_fatal(r))
2740                 return r;
2741
2742         if (folder->ui_func)
2743                 folder->ui_func(folder, item, folder->ui_func_data);
2744
2745         if (item->path) {
2746                 wildcard[0] = separator;
2747                 wildcard[1] = '%';
2748                 wildcard[2] = '\0';
2749                 real_path = imap_get_real_path(session, imapfolder, item->path, &r);
2750                 if (is_fatal(r)) {
2751                         g_free(real_path);
2752                         return r;
2753                 }
2754         } else {
2755                 wildcard[0] = '%';
2756                 wildcard[1] = '\0';
2757                 real_path = g_strdup("");
2758         }
2759
2760         Xstrcat_a(wildcard_path, real_path, wildcard,
2761                   {g_free(real_path); return MAILIMAP_ERROR_BAD_STATE;});
2762         lep_list = NULL;
2763
2764         if (subs_only)
2765                 r = imap_threaded_lsub(folder, "", wildcard_path, &lep_list);
2766         else
2767                 r = imap_threaded_list(folder, "", wildcard_path, &lep_list);
2768
2769         if (r != MAILIMAP_NO_ERROR) {
2770                 imap_handle_error(SESSION(session), NULL, r);
2771                 item_list = NULL;
2772                 g_free(real_path);
2773                 return r;
2774         }
2775         else {
2776                 item_list = imap_list_from_lep(imapfolder,
2777                                                lep_list, real_path, FALSE);
2778                 mailimap_list_result_free(lep_list);
2779         }
2780
2781         g_free(real_path);
2782
2783         node = item->node->children;
2784         while (node != NULL) {
2785                 FolderItem *old_item = FOLDER_ITEM(node->data);
2786                 GNode *next = node->next;
2787
2788                 new_item = NULL;
2789                 for (cur = item_list; cur != NULL; cur = cur->next) {
2790                         FolderItem *cur_item = FOLDER_ITEM(cur->data);
2791                         if (!strcmp2(old_item->path, cur_item->path)) {
2792                                 new_item = cur_item;
2793                                 break;
2794                         }
2795                 }
2796                 if (!new_item) {
2797                         if (old_item && old_item->path && !strcasecmp(old_item->path, "INBOX")) {
2798                                 debug_print("not removing INBOX\n");
2799                         } else {
2800                                 debug_print("folder '%s' not found. removing...\n",
2801                                             old_item->path);
2802                                 folder_item_remove(old_item);
2803                         }
2804                 } else {
2805                         old_item->no_sub = new_item->no_sub;
2806                         old_item->no_select = new_item->no_select;
2807                         if (old_item->no_sub == TRUE && node->children) {
2808                                 debug_print("folder '%s' doesn't have "
2809                                             "subfolders. removing...\n",
2810                                             old_item->path);
2811                                 folder_item_remove_children(old_item);
2812                         }
2813                 }
2814
2815                 node = next;
2816         }
2817
2818         for (cur = item_list; cur != NULL; cur = cur->next) {
2819                 FolderItem *cur_item = FOLDER_ITEM(cur->data);
2820                 new_item = NULL;
2821
2822                 for (node = item->node->children; node != NULL;
2823                      node = node->next) {
2824                         if (!strcmp2(FOLDER_ITEM(node->data)->path,
2825                                      cur_item->path)) {
2826                                 new_item = FOLDER_ITEM(node->data);
2827                                 folder_item_destroy(cur_item);
2828                                 cur_item = NULL;
2829                                 break;
2830                         }
2831                 }
2832                 if (!new_item) {
2833                         new_item = cur_item;
2834                         debug_print("new folder '%s' found.\n", new_item->path);
2835                         folder_item_append(item, new_item);
2836                 }
2837
2838                 if (!strcasecmp(new_item->path, "INBOX")) {
2839                         new_item->stype = F_INBOX;
2840                         folder->inbox = new_item;
2841                 } else if (!folder_item_parent(item) || item->stype == F_INBOX) {
2842                         gchar *base;
2843
2844                         base = g_path_get_basename(new_item->path);
2845
2846                         if (!folder->outbox && !g_ascii_strcasecmp(base, "Sent")) {
2847                                 new_item->stype = F_OUTBOX;
2848                                 folder->outbox = new_item;
2849                         } else if (!folder->draft && (!g_ascii_strcasecmp(base, "Drafts") || !g_ascii_strcasecmp(base, "Draft"))) {
2850                                 new_item->stype = F_DRAFT;
2851                                 folder->draft = new_item;
2852                         } else if (!folder->queue && !g_ascii_strcasecmp(base, "Queue")) {
2853                                 new_item->stype = F_QUEUE;
2854                                 folder->queue = new_item;
2855                         } else if (!folder->trash && !g_ascii_strcasecmp(base, "Trash")) {
2856                                 new_item->stype = F_TRASH;
2857                                 folder->trash = new_item;
2858                         }
2859                         g_free(base);
2860                 }
2861
2862                 if (new_item->no_sub == FALSE)
2863                         imap_scan_tree_recursive(session, new_item, subs_only);
2864         }
2865
2866         g_slist_free(item_list);
2867
2868         return MAILIMAP_NO_ERROR;
2869 }
2870
2871 GList *imap_scan_subtree(Folder *folder, FolderItem *item, gboolean unsubs_only, gboolean recursive)
2872 {
2873         IMAPSession *session = imap_session_get(folder);
2874         gchar *real_path;
2875         gchar *wildcard_path;
2876         gchar separator;
2877         gchar wildcard[3];
2878         clist * lep_list;
2879         GSList *item_list = NULL, *cur;
2880         GList *child_list = NULL, *tmplist = NULL;
2881         GSList *sub_list = NULL;
2882         int r = MAILIMAP_NO_ERROR;
2883
2884         if (!session)
2885                 return NULL;
2886
2887         separator = imap_get_path_separator(session, IMAP_FOLDER(folder), item->path, &r);
2888         if (is_fatal(r))
2889                 return NULL;
2890
2891         if (item->path) {
2892                 wildcard[0] = separator;
2893                 wildcard[1] = '%';
2894                 wildcard[2] = '\0';
2895                 real_path = imap_get_real_path(session, IMAP_FOLDER(folder), item->path, &r);
2896                 if (is_fatal(r)) {
2897                         g_free(real_path);
2898                         return NULL;
2899                 }
2900         } else {
2901                 wildcard[0] = '%';
2902                 wildcard[1] = '\0';
2903                 real_path = g_strdup("");
2904         }
2905
2906         Xstrcat_a(wildcard_path, real_path, wildcard,
2907                   {g_free(real_path); return NULL;});
2908         lep_list = NULL;
2909
2910         if (unsubs_only)
2911                 statusbar_print_all(_("Looking for unsubscribed folders in %s..."),
2912                                 item->path?item->path:item->name);
2913         else
2914                 statusbar_print_all(_("Looking for subfolders of %s..."),
2915                                 item->path?item->path:item->name);
2916
2917         r = imap_threaded_list(folder, "", wildcard_path, &lep_list);
2918         if (r) {
2919                 g_free(real_path);
2920                 statusbar_pop_all();
2921                 return NULL;
2922         }
2923         item_list = imap_list_from_lep(IMAP_FOLDER(folder),
2924                                lep_list, real_path, FALSE);
2925         mailimap_list_result_free(lep_list);
2926
2927         for (cur = item_list; cur != NULL; cur = cur->next) {
2928                 FolderItem *cur_item = FOLDER_ITEM(cur->data);
2929                 if (recursive) {
2930                         tmplist = imap_scan_subtree(folder, cur_item,
2931                                         unsubs_only, recursive);
2932                         if (tmplist)
2933                                 child_list = g_list_concat(child_list, tmplist);
2934                 }
2935                 child_list = g_list_prepend(child_list,
2936                                 imap_get_real_path(session,
2937                                         IMAP_FOLDER(folder), cur_item->path, &r));
2938                 if (is_fatal(r)) {
2939                         g_free(real_path);
2940                         statusbar_pop_all();
2941                         return NULL;
2942                 }
2943                 folder_item_destroy(cur_item);
2944         }
2945         child_list = g_list_reverse(child_list);
2946         g_slist_free(item_list);
2947
2948         if (unsubs_only) {
2949                 r = imap_threaded_lsub(folder, "", wildcard_path, &lep_list);
2950                 if (r) {
2951                         g_free(real_path);
2952                         statusbar_pop_all();
2953                         return NULL;
2954                 }
2955                 sub_list = imap_list_from_lep(IMAP_FOLDER(folder),
2956                                        lep_list, real_path, FALSE);
2957                 mailimap_list_result_free(lep_list);
2958
2959                 for (cur = sub_list; cur != NULL; cur = cur->next) {
2960                         FolderItem *cur_item = FOLDER_ITEM(cur->data);
2961                         GList *oldlitem = NULL;
2962                         gchar *tmp = imap_get_real_path(session,
2963                                         IMAP_FOLDER(folder), cur_item->path, &r);
2964                         if (r) {
2965                                 g_free(real_path);
2966                                 statusbar_pop_all();
2967                                 g_free(tmp);
2968                                 return NULL;
2969                         }
2970                         folder_item_destroy(cur_item);
2971                         oldlitem = g_list_find_custom(
2972                                         child_list, tmp, (GCompareFunc)strcmp2);
2973                         if (oldlitem) {
2974                                 child_list = g_list_remove_link(child_list, oldlitem);
2975                                 g_free(oldlitem->data);
2976                                 g_list_free(oldlitem);
2977                         }
2978                         g_free(tmp);
2979                 }
2980         }
2981
2982         g_free(real_path);
2983         statusbar_pop_all();
2984
2985         return child_list;
2986 }
2987
2988 static gint imap_create_tree(Folder *folder)
2989 {
2990         g_return_val_if_fail(folder != NULL, -1);
2991         g_return_val_if_fail(folder->node != NULL, -1);
2992         g_return_val_if_fail(folder->node->data != NULL, -1);
2993         g_return_val_if_fail(folder->account != NULL, -1);
2994
2995         imap_scan_tree(folder);
2996         imap_create_missing_folders(folder);
2997
2998         return 0;
2999 }
3000
3001 static void imap_create_missing_folders(Folder *folder)
3002 {
3003         g_return_if_fail(folder != NULL);
3004
3005         if (!folder->inbox)
3006                 folder->inbox = imap_create_special_folder
3007                         (folder, F_INBOX, "INBOX");
3008         if (!folder->trash)
3009                 folder->trash = imap_create_special_folder
3010                         (folder, F_TRASH, "Trash");
3011         if (!folder->queue)
3012                 folder->queue = imap_create_special_folder
3013                         (folder, F_QUEUE, "Queue");
3014         if (!folder->outbox)
3015                 folder->outbox = imap_create_special_folder
3016                         (folder, F_OUTBOX, "Sent");
3017         if (!folder->draft)
3018                 folder->draft = imap_create_special_folder
3019                         (folder, F_DRAFT, "Drafts");
3020 }
3021
3022 static FolderItem *imap_create_special_folder(Folder *folder,
3023                                               SpecialFolderItemType stype,
3024                                               const gchar *name)
3025 {
3026         FolderItem *item;
3027         FolderItem *new_item;
3028
3029         g_return_val_if_fail(folder != NULL, NULL);
3030         g_return_val_if_fail(folder->node != NULL, NULL);
3031         g_return_val_if_fail(folder->node->data != NULL, NULL);
3032         g_return_val_if_fail(folder->account != NULL, NULL);
3033         g_return_val_if_fail(name != NULL, NULL);
3034
3035         item = FOLDER_ITEM(folder->node->data);
3036         new_item = imap_create_folder(folder, item, name);
3037
3038         if (!new_item) {
3039                 g_warning("Can't create '%s'", name);
3040                 if (!folder->inbox) return NULL;
3041
3042                 new_item = imap_create_folder(folder, folder->inbox, name);
3043                 if (!new_item)
3044                         g_warning("Can't create '%s' under INBOX", name);
3045                 else
3046                         new_item->stype = stype;
3047         } else
3048                 new_item->stype = stype;
3049
3050         return new_item;
3051 }
3052
3053 static gchar *imap_folder_get_path(Folder *folder)
3054 {
3055         gchar *folder_path;
3056
3057         g_return_val_if_fail(folder != NULL, NULL);
3058         g_return_val_if_fail(folder->account != NULL, NULL);
3059
3060 #ifdef G_OS_WIN32
3061         gchar *sanitized_dirname = g_strdup(folder->account->recv_server);
3062         g_strdelimit(sanitized_dirname, ":", ',');
3063 #endif
3064
3065         folder_path = g_strconcat(get_imap_cache_dir(),
3066                                   G_DIR_SEPARATOR_S,
3067 #ifdef G_OS_WIN32
3068                                                                                                                                         sanitized_dirname,
3069 #else
3070                                   folder->account->recv_server,
3071 #endif
3072                                   G_DIR_SEPARATOR_S,
3073                                   folder->account->userid,
3074                                   NULL);
3075
3076 #ifdef G_OS_WIN32
3077         g_free(sanitized_dirname);
3078 #endif
3079         return folder_path;
3080 }
3081
3082 #ifdef G_OS_WIN32
3083 static gchar *imap_encode_unsafe_chars(const gchar *str)
3084 {
3085         gchar *ret = NULL, *o_ret;
3086         gchar *i;
3087         if (!str)
3088                 return NULL;
3089         ret = g_malloc(3*strlen(str)+1);
3090         o_ret = ret;
3091         for (i = (gchar *)str; *i; i++) {
3092                 switch(*i) {
3093                         case ':':
3094                         case '|':
3095                         case '<':
3096                         case '>':
3097                         case '*':
3098                         case '?':
3099                         case '#':
3100                                 *ret++ = '%';
3101                                 *ret++ = '0'+(*i/10);
3102                                 *ret++ = '0'+(*i%10);
3103                                 break;
3104                         default:
3105                                 *ret++ = *i;
3106                 }
3107         }
3108         *ret++ = '\0';
3109         return o_ret;
3110 }
3111 #endif
3112 static gchar *imap_item_get_path(Folder *folder, FolderItem *item)
3113 {
3114         gchar *folder_path, *path;
3115         gchar *item_path = NULL;
3116
3117         g_return_val_if_fail(folder != NULL, NULL);
3118         g_return_val_if_fail(item != NULL, NULL);
3119         folder_path = imap_folder_get_path(folder);
3120
3121         g_return_val_if_fail(folder_path != NULL, NULL);
3122
3123 #ifdef G_OS_UNIX
3124         item_path = g_strdup(item->path);
3125 #else
3126         item_path = imap_encode_unsafe_chars(item->path);
3127 #endif
3128
3129         if (g_path_is_absolute(folder_path)) {
3130                 if (item_path)
3131                         path = g_strconcat(folder_path, G_DIR_SEPARATOR_S,
3132                                            item_path, NULL);
3133                 else
3134                         path = g_strdup(folder_path);
3135         } else {
3136                 if (item_path)
3137                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
3138                                            folder_path, G_DIR_SEPARATOR_S,
3139                                            item_path, NULL);
3140                 else
3141                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
3142                                            folder_path, NULL);
3143         }
3144         g_free(folder_path);
3145         g_free(item_path);
3146 #ifdef G_OS_WIN32
3147         while (strchr(path, '/'))
3148                 *strchr(path, '/') = '\\';
3149 #endif
3150
3151         return path;
3152 }
3153
3154 static FolderItem *imap_create_folder(Folder *folder, FolderItem *parent,
3155                                const gchar *name)
3156 {
3157         gchar *dirpath, *imap_path;
3158         IMAPSession *session;
3159         FolderItem *new_item;
3160         gchar separator;
3161         gchar *new_name;
3162         const gchar *p;
3163         gint ok = MAILIMAP_NO_ERROR;
3164         gboolean no_select = FALSE, no_sub = FALSE;
3165         gboolean exist = FALSE;
3166
3167         g_return_val_if_fail(folder != NULL, NULL);
3168         g_return_val_if_fail(folder->account != NULL, NULL);
3169         g_return_val_if_fail(parent != NULL, NULL);
3170         g_return_val_if_fail(name != NULL, NULL);
3171
3172         if (to_number(name) > 0) {
3173                 gchar *cached_msg = imap_get_cached_filename(parent, to_number(name));
3174                 if (is_file_exist(cached_msg)) {
3175                         if (claws_unlink(cached_msg) != 0) {
3176                                 return NULL;
3177                         }
3178                 }
3179         }
3180
3181         debug_print("getting session...\n");
3182         session = imap_session_get(folder);
3183         if (!session) {
3184                 return NULL;
3185         }
3186
3187         if (!folder_item_parent(parent) && strcasecmp(name, "INBOX") == 0) {
3188                 dirpath = g_strdup(name);
3189         }else if (parent->path)
3190                 dirpath = g_strconcat(parent->path, "/", name, NULL);
3191         else if ((p = strchr(name, '/')) != NULL && *(p + 1) != '\0')
3192                 dirpath = g_strdup(name);
3193         else if (folder->account->imap_dir && *folder->account->imap_dir) {
3194                 gchar *imap_dir;
3195
3196                 Xstrdup_a(imap_dir, folder->account->imap_dir, {return NULL;});
3197                 strtailchomp(imap_dir, '/');
3198                 dirpath = g_strconcat(imap_dir, "/", name, NULL);
3199         } else
3200                 dirpath = g_strdup(name);
3201
3202
3203
3204         /* keep trailing directory separator to create a folder that contains
3205            sub folder */
3206         imap_path = imap_utf8_to_modified_utf7(dirpath, FALSE);
3207
3208         strtailchomp(dirpath, '/');
3209         Xstrdup_a(new_name, name, {
3210                 g_free(dirpath);
3211                 g_free(imap_path);
3212                 return NULL;});
3213
3214         separator = imap_get_path_separator(session, IMAP_FOLDER(folder), imap_path, &ok);
3215         if (is_fatal(ok)) {
3216                 g_free(imap_path);
3217                 return NULL;
3218         }
3219         imap_path_separator_subst(imap_path, separator);
3220         /* remove trailing / for display */
3221         strtailchomp(new_name, '/');
3222
3223         if (strcasecmp(dirpath, "INBOX") != 0) {
3224                 GPtrArray *argbuf;
3225                 int r;
3226                 clist * lep_list;
3227
3228                 argbuf = g_ptr_array_new();
3229                 r = imap_threaded_list(folder, "", imap_path, &lep_list);
3230                 if (r != MAILIMAP_NO_ERROR) {
3231                         imap_handle_error(SESSION(session), NULL, r);
3232                         log_warning(LOG_PROTOCOL, _("can't create mailbox: LIST failed\n"));
3233                         g_free(imap_path);
3234                         g_free(dirpath);
3235                         ptr_array_free_strings(argbuf);
3236                         g_ptr_array_free(argbuf, TRUE);
3237                         return NULL;
3238                 }
3239
3240                 if (clist_count(lep_list) > 0)
3241                         exist = TRUE;
3242                 mailimap_list_result_free(lep_list);
3243                 lep_list = NULL;
3244                 if (!exist) {
3245                         ok = imap_cmd_create(session, imap_path);
3246                         if (ok != MAILIMAP_NO_ERROR) {
3247                                 log_warning(LOG_PROTOCOL, _("can't create mailbox\n"));
3248                                 g_free(imap_path);
3249                                 g_free(dirpath);
3250                                 return NULL;
3251                         }
3252                         r = imap_threaded_list(folder, "", imap_path, &lep_list);
3253                         if (r == MAILIMAP_NO_ERROR) {
3254                                 GSList *item_list = imap_list_from_lep(IMAP_FOLDER(folder),
3255                                                lep_list, dirpath, TRUE);
3256                                 if (item_list) {
3257                                         FolderItem *cur_item = FOLDER_ITEM(item_list->data);
3258                                         no_select = cur_item->no_select;
3259                                         no_sub = cur_item->no_sub;
3260                                         g_slist_free(item_list);
3261                                 }
3262                                 mailimap_list_result_free(lep_list);
3263                         } else {
3264                                 imap_handle_error(SESSION(session), NULL, r);
3265                         }
3266                 }
3267                 imap_threaded_subscribe(folder, imap_path, TRUE);
3268         } else {
3269                 clist *lep_list;
3270                 int r;
3271                 /* just get flags */
3272                 r = imap_threaded_list(folder, "", "INBOX", &lep_list);
3273                 if (r == MAILIMAP_NO_ERROR) {
3274                         GSList *item_list = imap_list_from_lep(IMAP_FOLDER(folder),
3275                                        lep_list, dirpath, TRUE);
3276                         if (item_list) {
3277                                 FolderItem *cur_item = FOLDER_ITEM(item_list->data);
3278                                 no_select = cur_item->no_select;
3279                                 no_sub = cur_item->no_sub;
3280                                 g_slist_free(item_list);
3281                         }
3282                         mailimap_list_result_free(lep_list);
3283                 } else {
3284                         imap_handle_error(SESSION(session), NULL, r);
3285                 }
3286         }
3287
3288         new_item = folder_item_new(folder, new_name, dirpath);
3289         new_item->no_select = no_select;
3290         new_item->no_sub = no_sub;
3291         folder_item_append(parent, new_item);
3292         g_free(imap_path);
3293         g_free(dirpath);
3294
3295         dirpath = folder_item_get_path(new_item);
3296         if (!is_dir_exist(dirpath))
3297                 make_dir_hier(dirpath);
3298         g_free(dirpath);
3299
3300         if (exist) {
3301                 /* folder existed, scan it */
3302                 imap_scan_required(folder, new_item);
3303                 folder_item_scan_full(new_item, FALSE);
3304         }
3305
3306         return new_item;
3307 }
3308
3309 static gint imap_rename_folder(Folder *folder, FolderItem *item,
3310                                const gchar *name)
3311 {
3312         gchar *dirpath;
3313         gchar *newpath;
3314         gchar *real_oldpath;
3315         gchar *real_newpath;
3316         gchar *paths[2];
3317         gchar *old_cache_dir;
3318         gchar *new_cache_dir;
3319         IMAPSession *session;
3320         gchar separator;
3321         gint ok = MAILIMAP_NO_ERROR;
3322         gint exists, recent, unseen;
3323         guint32 uid_validity;
3324
3325         g_return_val_if_fail(folder != NULL, -1);
3326         g_return_val_if_fail(item != NULL, -1);
3327         g_return_val_if_fail(item->path != NULL, -1);
3328         g_return_val_if_fail(name != NULL, -1);
3329
3330         debug_print("getting session...\n");
3331         session = imap_session_get(folder);
3332         if (!session) {
3333                 return -1;
3334         }
3335
3336         if (strchr(name, imap_get_path_separator(session, IMAP_FOLDER(folder), item->path, &ok)) != NULL ||
3337                 is_fatal(ok)) {
3338                 g_warning("New folder name must not contain the namespace "
3339                             "path separator");
3340                 return -1;
3341         }
3342
3343         real_oldpath = imap_get_real_path(session, IMAP_FOLDER(folder), item->path, &ok);
3344         if (is_fatal(ok)) {
3345                 g_free(real_oldpath);
3346                 return -1;
3347         }
3348
3349         g_free(session->mbox);
3350         session->mbox = NULL;
3351         session->exists = 0;
3352         session->recent = 0;
3353         session->expunge = 0;
3354         ok = imap_cmd_examine(session, "INBOX",
3355                               &exists, &recent, &unseen, &uid_validity, FALSE);
3356         if (ok != MAILIMAP_NO_ERROR) {
3357                 g_free(real_oldpath);
3358                 return -1;
3359         }
3360
3361         separator = imap_get_path_separator(session, IMAP_FOLDER(folder), item->path, &ok);
3362         if (is_fatal(ok)) {
3363                 g_free(real_oldpath);
3364                 return -1;
3365         }
3366         if (strchr(item->path, '/')) {
3367                 dirpath = g_path_get_dirname(item->path);
3368                 newpath = g_strconcat(dirpath, "/", name, NULL);
3369                 g_free(dirpath);
3370         } else
3371                 newpath = g_strdup(name);
3372
3373         real_newpath = imap_utf8_to_modified_utf7(newpath, FALSE);
3374         imap_path_separator_subst(real_newpath, separator);
3375
3376         ok = imap_cmd_rename(session, real_oldpath, real_newpath);
3377         if (ok != MAILIMAP_NO_ERROR) {
3378                 log_warning(LOG_PROTOCOL, _("can't rename mailbox: %s to %s\n"),
3379                             real_oldpath, real_newpath);
3380                 g_free(real_oldpath);
3381                 g_free(newpath);
3382                 g_free(real_newpath);
3383                 return -1;
3384         }
3385         g_free(item->name);
3386         item->name = g_strdup(name);
3387
3388         old_cache_dir = folder_item_get_path(item);
3389
3390         paths[0] = g_strdup(item->path);
3391         paths[1] = newpath;
3392         g_node_traverse(item->node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
3393                         imap_rename_folder_func, paths);
3394
3395         if (is_dir_exist(old_cache_dir)) {
3396                 new_cache_dir = folder_item_get_path(item);
3397                 if (g_rename(old_cache_dir, new_cache_dir) < 0) {
3398                         FILE_OP_ERROR(old_cache_dir, "rename");
3399                 }
3400                 g_free(new_cache_dir);
3401         }
3402
3403         g_free(old_cache_dir);
3404         g_free(paths[0]);
3405         g_free(newpath);
3406         g_free(real_oldpath);
3407         g_free(real_newpath);
3408         return 0;
3409 }
3410
3411 gint imap_subscribe(Folder *folder, FolderItem *item, gchar *rpath, gboolean sub)
3412 {
3413         gchar *path;
3414         gint r = MAILIMAP_NO_ERROR;
3415         IMAPSession *session;
3416         debug_print("getting session...\n");
3417
3418         session = imap_session_get(folder);
3419         if (!session) {
3420                 return -1;
3421         }
3422         if (item && item->path) {
3423                 path = imap_get_real_path(session, IMAP_FOLDER(folder), item->path, &r);
3424                 if (!path)
3425                         return -1;
3426                 if (is_fatal(r)) {
3427                         g_free(path);
3428                         return -1;
3429                 }
3430                 if (!strcasecmp(path, "INBOX") && sub == FALSE) {
3431                         g_free(path);
3432                         return -1;
3433                 }
3434                 debug_print("%ssubscribing %s\n", sub?"":"un", path);
3435                 r = imap_threaded_subscribe(folder, path, sub);
3436                 g_free(path);
3437         } else if (rpath) {
3438                 r = imap_threaded_subscribe(folder, rpath, sub);
3439         } else
3440                 return -1;
3441         return r;
3442 }
3443
3444 static gint imap_remove_folder_real(Folder *folder, FolderItem *item)
3445 {
3446         gint ok = MAILIMAP_NO_ERROR;
3447         IMAPSession *session;
3448         gchar *path;
3449         gchar *cache_dir;
3450         gboolean selected_folder;
3451
3452         g_return_val_if_fail(folder != NULL, -1);
3453         g_return_val_if_fail(item != NULL, -1);
3454         g_return_val_if_fail(item->path != NULL, -1);
3455
3456         debug_print("getting session...\n");
3457         session = imap_session_get(folder);
3458         if (!session) {
3459                 return -1;
3460         }
3461         path = imap_get_real_path(session, IMAP_FOLDER(folder), item->path, &ok);
3462         if (is_fatal(ok)) {
3463                 g_free(path);
3464                 return -1;
3465         }
3466         imap_threaded_subscribe(folder, path, FALSE);
3467
3468         selected_folder = (session->mbox != NULL) &&
3469                           (!strcmp(session->mbox, item->path));
3470         if (selected_folder) {
3471                 ok = imap_cmd_close(session);
3472                 if (ok != MAILIMAP_NO_ERROR) {
3473                         debug_print("close err %d\n", ok);
3474                         return ok;
3475                 }
3476         }
3477         ok = imap_cmd_delete(session, path);
3478         if (ok != MAILIMAP_NO_ERROR && !is_fatal(ok)) {
3479                 gchar *tmp = NULL;
3480
3481                 ok = MAILIMAP_NO_ERROR;
3482                 tmp = g_strdup_printf("%s%c", path,
3483                                 imap_get_path_separator(session, IMAP_FOLDER(folder), path, &ok));
3484                 g_free(path);
3485                 path = tmp;
3486                 if (!is_fatal(ok))
3487                         ok = imap_cmd_delete(session, path);
3488         }
3489
3490         if (ok != MAILIMAP_NO_ERROR) {
3491                 log_warning(LOG_PROTOCOL, _("can't delete mailbox\n"));
3492                 g_free(path);
3493                 return -1;
3494         }
3495
3496         g_free(path);
3497         cache_dir = folder_item_get_path(item);
3498         if (is_dir_exist(cache_dir) && remove_dir_recursive(cache_dir) < 0)
3499                 g_warning("can't remove directory '%s'", cache_dir);
3500         g_free(cache_dir);
3501         folder_item_remove(item);
3502         return 0;
3503 }
3504
3505 static gint imap_remove_folder(Folder *folder, FolderItem *item)
3506 {
3507         GNode *node, *next;
3508
3509         g_return_val_if_fail(item != NULL, -1);
3510         g_return_val_if_fail(item->folder != NULL, -1);
3511         g_return_val_if_fail(item->node != NULL, -1);
3512
3513         node = item->node->children;
3514         while (node != NULL) {
3515                 next = node->next;
3516                 if (imap_remove_folder(folder, FOLDER_ITEM(node->data)) < 0)
3517                         return -1;
3518                 node = next;
3519         }
3520         debug_print("IMAP removing %s\n", item->path);
3521
3522         if (imap_remove_all_msg(folder, item) < 0)
3523                 return -1;
3524         return imap_remove_folder_real(folder, item);
3525 }
3526
3527 typedef struct _uncached_data {
3528         IMAPSession *session;
3529         FolderItem *item;
3530         MsgNumberList *numlist;
3531         guint cur;
3532         guint total;
3533         gboolean done;
3534         int ok;
3535 } uncached_data;
3536
3537 static void *imap_get_uncached_messages_thread(void *data)
3538 {
3539         uncached_data *stuff = (uncached_data *)data;
3540         IMAPSession *session = stuff->session;
3541         FolderItem *item = stuff->item;
3542         MsgNumberList *numlist = stuff->numlist;
3543         GSList *newlist = NULL;
3544         GSList *llast = NULL;
3545         GSList *seq_list, *cur;
3546         gboolean got_alien_tags = FALSE;
3547
3548         debug_print("uncached_messages\n");
3549
3550         if (session == NULL || item == NULL || item->folder == NULL
3551             || FOLDER_CLASS(item->folder) != &imap_class) {
3552                 stuff->done = TRUE;
3553                 return NULL;
3554         }
3555
3556         seq_list = imap_get_lep_set_from_numlist(IMAP_FOLDER(item->folder), numlist);
3557         debug_print("get msgs info\n");
3558         for (cur = seq_list; cur != NULL; cur = g_slist_next(cur)) {
3559                 struct mailimap_set * imapset;
3560                 unsigned int i;
3561                 int r;
3562                 carray * env_list;
3563                 int count;
3564
3565                 if (session->cancelled)
3566                         break;
3567
3568                 imapset = cur->data;
3569
3570                 r = imap_threaded_fetch_env(session->folder,
3571                                             imapset, &env_list);
3572                 if (r != MAILIMAP_NO_ERROR) {
3573                         imap_handle_error(SESSION(session), NULL, r);
3574                         if (is_fatal(r)) {
3575                                 stuff->ok = r;
3576                                 return NULL;
3577                         }
3578                         continue;
3579                 }
3580
3581                 session_set_access_time(SESSION(session));
3582
3583                 count = 0;
3584                 for(i = 0 ; i < carray_count(env_list) ; i += 2) {
3585                         struct imap_fetch_env_info * info;
3586                         MsgInfo * msginfo;
3587                         GSList *tags = NULL, *cur = NULL;
3588                         info = carray_get(env_list, i);
3589                         tags = carray_get(env_list, i+1);
3590                         msginfo = imap_envelope_from_lep(info, item);
3591                         if (msginfo == NULL) {
3592                                 slist_free_strings_full(tags);
3593                                 continue;
3594                         }
3595                         g_slist_free(msginfo->tags);
3596                         msginfo->tags = NULL;
3597
3598                         for (cur = tags; cur; cur = cur->next) {
3599                                 gchar *real_tag = imap_modified_utf7_to_utf8(cur->data, TRUE);
3600                                 gint id = 0;
3601                                 id = tags_get_id_for_str(real_tag);
3602                                 if (id == -1) {
3603                                         id = tags_add_tag(real_tag);
3604                                         got_alien_tags = TRUE;
3605                                 }
3606                                 if (!g_slist_find(msginfo->tags, GINT_TO_POINTER(id))) {
3607                                         msginfo->tags = g_slist_prepend(
3608                                                         msginfo->tags,
3609                                                         GINT_TO_POINTER(id));
3610                                 }
3611                                 g_free(real_tag);
3612                         }
3613                         if (msginfo->tags)
3614                                 msginfo->tags = g_slist_reverse(msginfo->tags);
3615                         slist_free_strings_full(tags);
3616                         msginfo->folder = item;
3617                         if (!newlist)
3618                                 llast = newlist = g_slist_append(newlist, msginfo);
3619                         else {
3620                                 llast = g_slist_append(llast, msginfo);
3621                                 llast = llast->next;
3622                         }
3623                         count ++;
3624                 }
3625
3626                 imap_fetch_env_free(env_list);
3627         }
3628
3629         if (got_alien_tags) {
3630                 tags_write_tags();
3631                 main_window_reflect_tags_changes(mainwindow_get_mainwindow());
3632         }
3633
3634         imap_lep_set_free(seq_list);
3635
3636         session_set_access_time(SESSION(session));
3637         stuff->done = TRUE;
3638         return newlist;
3639 }
3640
3641 #define MAX_MSG_NUM 50
3642
3643 static GSList *imap_get_uncached_messages(IMAPSession *session,
3644                                         FolderItem *item,
3645                                         MsgNumberList *numlist,
3646                                         int *r)
3647 {
3648         GSList *result = NULL;
3649         GSList * cur;
3650         uncached_data *data = g_new0(uncached_data, 1);
3651
3652         cur = numlist;
3653         data->total = g_slist_length(numlist);
3654         data->ok = MAILIMAP_NO_ERROR;
3655         debug_print("messages list : %i\n", data->total);
3656
3657         while (cur != NULL) {
3658                 GSList * partial_result;
3659                 int count;
3660                 GSList * newlist;
3661                 GSList * llast;
3662
3663                 llast = NULL;
3664                 count = 0;
3665                 newlist = NULL;
3666                 while (count < MAX_MSG_NUM) {
3667                         void * p;
3668
3669                         p = cur->data;
3670
3671                         if (newlist == NULL)
3672                                 llast = newlist = g_slist_append(newlist, p);
3673                         else {
3674                                 llast = g_slist_append(llast, p);
3675                                 llast = llast->next;
3676                         }
3677                         count ++;
3678
3679                         cur = cur->next;
3680                         if (cur == NULL)
3681                                 break;
3682                 }
3683
3684                 data->done = FALSE;
3685                 data->session = session;
3686                 data->item = item;
3687                 data->numlist = newlist;
3688                 data->cur += count;
3689
3690                 if (prefs_common.work_offline &&
3691                     !inc_offline_should_override(FALSE,
3692                         _("Claws Mail needs network access in order "
3693                           "to access the IMAP server."))) {
3694                         g_free(data);
3695                         return NULL;
3696                 }
3697
3698                 partial_result =
3699                         (GSList *)imap_get_uncached_messages_thread(data);
3700                 *r = data->ok;
3701                 if (data->ok != MAILIMAP_NO_ERROR) {
3702                         goto bail;
3703                 }
3704                 statusbar_progress_all(data->cur,data->total, 1);
3705
3706                 g_slist_free(newlist);
3707
3708                 result = g_slist_concat(result, partial_result);
3709         }
3710 bail:
3711         g_free(data);
3712
3713         statusbar_progress_all(0,0,0);
3714         statusbar_pop_all();
3715
3716         return result;
3717 }
3718
3719 static void imap_delete_all_cached_messages(FolderItem *item)
3720 {
3721         gchar *dir;
3722
3723         g_return_if_fail(item != NULL);
3724         g_return_if_fail(item->folder != NULL);
3725         g_return_if_fail(FOLDER_CLASS(item->folder) == &imap_class);
3726
3727         debug_print("Deleting all cached messages...\n");
3728
3729         dir = folder_item_get_path(item);
3730         if (is_dir_exist(dir))
3731                 remove_all_numbered_files(dir);
3732         g_free(dir);
3733
3734         debug_print("done.\n");
3735 }
3736
3737 gchar imap_get_path_separator_for_item(FolderItem *item)
3738 {
3739         Folder *folder = NULL;
3740         IMAPFolder *imap_folder = NULL;
3741         IMAPSession *session = NULL;
3742         gchar result = '/';
3743         gint ok = MAILIMAP_NO_ERROR;
3744         if (!item)
3745                 return '/';
3746         folder = item->folder;
3747
3748         if (!folder)
3749                 return '/';
3750
3751         imap_folder = IMAP_FOLDER(folder);
3752
3753         debug_print("getting session...");
3754         session = imap_session_get(FOLDER(folder));
3755         result = imap_get_path_separator(session, imap_folder, item->path, &ok);
3756         return result;
3757 }
3758
3759 static gchar imap_refresh_path_separator(IMAPSession *session, IMAPFolder *folder, const gchar *subfolder, gint *ok)
3760 {
3761         clist * lep_list;
3762         int r;
3763         gchar separator = '\0';
3764
3765         g_return_val_if_fail(session != NULL, '/');
3766         r = imap_threaded_list((Folder *)folder, "", subfolder, &lep_list);
3767
3768         if (r != MAILIMAP_NO_ERROR) {
3769                 imap_handle_error(SESSION(session), NULL, r);
3770                 log_warning(LOG_PROTOCOL, _("LIST failed\n"));
3771                 *ok = r;
3772                 return '\0';
3773         }
3774
3775         if (lep_list != NULL && clist_count(lep_list) > 0) {
3776                 clistiter * iter = clist_begin(lep_list);
3777                 struct mailimap_mailbox_list * mb;
3778                 mb = clist_content(iter);
3779
3780                 separator = mb->mb_delimiter;
3781                 debug_print("got separator: %c\n", folder->last_seen_separator);
3782         }
3783         *ok = MAILIMAP_NO_ERROR;
3784         mailimap_list_result_free(lep_list);
3785         return separator;
3786 }
3787
3788 static gchar imap_get_path_separator(IMAPSession *session, IMAPFolder *folder, const gchar *path, gint *ok)
3789 {
3790         gchar separator = '/';
3791         *ok = MAILIMAP_NO_ERROR;
3792         if (folder->last_seen_separator == 0) {
3793                 folder->last_seen_separator = imap_refresh_path_separator(session, folder, "", ok);
3794         }
3795
3796         if (folder->last_seen_separator == 0) {
3797                 folder->last_seen_separator = imap_refresh_path_separator(session, folder, "INBOX", ok);
3798         }
3799
3800         if (folder->last_seen_separator != 0) {
3801                 debug_print("using separator: %c\n", folder->last_seen_separator);
3802                 return folder->last_seen_separator;
3803         }
3804
3805         return separator;
3806 }
3807
3808 static gchar *imap_get_real_path(IMAPSession *session, IMAPFolder *folder, const gchar *path, gint *ok)
3809 {
3810         gchar *real_path = NULL;
3811         gchar separator;
3812
3813         g_return_val_if_fail(folder != NULL, NULL);
3814         g_return_val_if_fail(path != NULL, NULL);
3815
3816         *ok = MAILIMAP_NO_ERROR;
3817
3818         real_path = imap_utf8_to_modified_utf7(path, FALSE);
3819         separator = imap_get_path_separator(session, folder, path, ok);
3820         if (*ok == MAILIMAP_NO_ERROR)
3821                 imap_path_separator_subst(real_path, separator);
3822
3823         return real_path;
3824 }
3825
3826 static gint imap_set_message_flags(IMAPSession *session,
3827                                    IMAPFolderItem *item,
3828                                    MsgNumberList *numlist,
3829                                    IMAPFlags flags,
3830                                    GSList *tags,
3831                                    gboolean is_set)
3832 {
3833         gint ok = 0;
3834         GSList *seq_list;
3835         GSList * cur;
3836         gint total = 0;
3837         IMAPFolder *folder = NULL;
3838         GSList *sorted_list = NULL;
3839
3840         if (numlist == NULL || session == NULL)
3841                 return MAILIMAP_ERROR_BAD_STATE;
3842
3843         folder = IMAP_FOLDER(session->folder);
3844
3845         sorted_list = g_slist_copy(numlist);
3846         sorted_list = g_slist_sort(sorted_list, g_int_compare);
3847
3848         cur = g_slist_last(sorted_list);
3849
3850         if (cur)
3851                 total = GPOINTER_TO_INT(cur->data);
3852
3853         seq_list = imap_get_lep_set_from_numlist(IMAP_FOLDER(session->folder), sorted_list);
3854
3855         statusbar_print_all(_("Flagging messages..."));
3856
3857         for(cur = seq_list ; cur != NULL ; cur = g_slist_next(cur)) {
3858                 struct mailimap_set * imapset = (struct mailimap_set *)cur->data;
3859                 struct mailimap_set_item *set_item = NULL;
3860
3861                 if (imapset->set_list)
3862                         set_item = clist_content(clist_begin(imapset->set_list));
3863                 else
3864                         continue;
3865
3866                 if (set_item == NULL)
3867                         continue;
3868
3869                 statusbar_progress_all(set_item->set_first, total, 1);
3870
3871                 ok = imap_cmd_store(session, item, imapset,
3872                                     flags, tags, is_set);
3873                 statusbar_progress_all(set_item->set_last, total, 1);
3874                 if (ok != MAILIMAP_NO_ERROR && folder->max_set_size > 20) {
3875                         /* reduce max set size */
3876                         folder->max_set_size /= 2;
3877                 }
3878                 if (ok != MAILIMAP_NO_ERROR && is_fatal(ok)) {
3879                         break;
3880                 }
3881         }
3882
3883         g_slist_free(sorted_list);
3884
3885         statusbar_progress_all(0,0,0);
3886         statusbar_pop_all();
3887
3888         imap_lep_set_free(seq_list);
3889
3890         return ok;
3891 }
3892
3893 typedef struct _select_data {
3894         IMAPSession *session;
3895         gchar *real_path;
3896         gint *exists;
3897         gint *recent;
3898         gint *unseen;
3899         guint32 *uid_validity;
3900         gboolean done;
3901 } select_data;
3902
3903 static gint imap_select(IMAPSession *session, IMAPFolder *folder,
3904                         FolderItem *item,
3905                         gint *exists, gint *recent, gint *unseen,
3906                         guint32 *uid_validity, gint *can_create_flags,
3907                         gboolean block)
3908 {
3909         gchar *real_path;
3910         gint ok = MAILIMAP_NO_ERROR;
3911         gint exists_, recent_, unseen_;
3912         guint32 uid_validity_;
3913         gint can_create_flags_;
3914         const gchar *path = item ? item->path:NULL;
3915
3916         if (!item) {
3917                 return MAILIMAP_ERROR_BAD_STATE;
3918         }
3919
3920         if (!exists && !recent && !unseen && !uid_validity && !can_create_flags) {
3921                 if (session->mbox && strcmp(session->mbox, path) == 0)
3922                         return MAILIMAP_NO_ERROR;
3923         }
3924         if (!exists && !recent && !unseen && !uid_validity && can_create_flags) {
3925                 if (session->mbox && strcmp(session->mbox, path) == 0) {
3926                         if (IMAP_FOLDER_ITEM(item)->can_create_flags != ITEM_CAN_CREATE_FLAGS_UNKNOWN)
3927                                 return MAILIMAP_NO_ERROR;
3928                 }
3929         }
3930         if (!exists)
3931                 exists = &exists_;
3932         if (!recent)
3933                 recent = &recent_;
3934         if (!unseen)
3935                 unseen = &unseen_;
3936         if (!uid_validity)
3937                 uid_validity = &uid_validity_;
3938         if (!can_create_flags)
3939                 can_create_flags = &can_create_flags_;
3940
3941         g_free(session->mbox);
3942         session->mbox = NULL;
3943         session->exists = 0;
3944         session->recent = 0;
3945         session->expunge = 0;
3946
3947         real_path = imap_get_real_path(session, folder, path, &ok);
3948         if (is_fatal(ok)) {
3949                 g_free(real_path);
3950                 return ok;
3951         }
3952         g_slist_free(IMAP_FOLDER_ITEM(item)->ok_flags);
3953         IMAP_FOLDER_ITEM(item)->ok_flags = NULL;
3954         ok = imap_cmd_select(session, real_path,
3955                              exists, recent, unseen, uid_validity, can_create_flags,
3956                              &(IMAP_FOLDER_ITEM(item)->ok_flags), block);
3957         if (ok != MAILIMAP_NO_ERROR) {
3958                 log_warning(LOG_PROTOCOL, _("can't select folder: %s\n"), real_path);
3959         } else {
3960                 session->mbox = g_strdup(path);
3961                 session->folder_content_changed = FALSE;
3962                 session->exists = *exists;
3963                 session->recent = *recent;
3964                 session->expunge = 0;
3965                 session->unseen = *unseen;
3966                 session->uid_validity = *uid_validity;
3967                 debug_print("select: exists %d recent %d expunge %d uid_validity %d can_create_flags %d\n",
3968                         session->exists, session->recent, session->expunge,
3969                         session->uid_validity, *can_create_flags);
3970         }
3971         if (*can_create_flags) {
3972                 IMAP_FOLDER_ITEM(item)->can_create_flags = ITEM_CAN_CREATE_FLAGS;
3973         } else {
3974                 IMAP_FOLDER_ITEM(item)->can_create_flags = ITEM_CANNOT_CREATE_FLAGS;
3975         }
3976         g_free(real_path);
3977
3978         return ok;
3979 }
3980
3981 static gint imap_status(IMAPSession *session, IMAPFolder *folder,
3982                         const gchar *path, IMAPFolderItem *item,
3983                         gint *messages,
3984                         guint32 *uid_next, guint32 *uid_validity,
3985                         gint *unseen, gboolean block)
3986 {
3987         int r = MAILIMAP_NO_ERROR;
3988         clistiter * iter;
3989         struct mailimap_mailbox_data_status * data_status;
3990         int got_values;
3991         gchar *real_path;
3992         guint mask = 0;
3993
3994         real_path = imap_get_real_path(session, folder, path, &r);
3995         if (is_fatal(r)) {
3996                 g_free(real_path);
3997                 return r;
3998         }
3999         if (messages) {
4000                 mask |= 1 << 0;
4001                 *messages = 0;
4002         }
4003         if (uid_next) {
4004                 mask |= 1 << 2;
4005                 *uid_next = 0;
4006         }
4007         if (uid_validity) {
4008                 mask |= 1 << 3;
4009                 *uid_validity = 0;
4010         }
4011         if (unseen) {
4012                 mask |= 1 << 4;
4013                 *unseen = 0;
4014         }
4015
4016         if (session->mbox != NULL &&
4017             !strcmp(session->mbox, item->item.path)) {
4018                 r = imap_cmd_close(session);
4019                 if (r != MAILIMAP_NO_ERROR) {
4020                         debug_print("close err %d\n", r);
4021                         g_free(real_path);
4022                         return r;
4023                 }
4024         }
4025
4026         r = imap_threaded_status(FOLDER(folder), real_path,
4027                 &data_status, mask);
4028
4029         g_free(real_path);
4030         if (r != MAILIMAP_NO_ERROR) {
4031                 imap_handle_error(SESSION(session), NULL, r);
4032                 debug_print("status err %d\n", r);
4033                 return r;
4034         }
4035
4036         if (data_status == NULL || data_status->st_info_list == NULL) {
4037                 debug_print("data_status %p\n", data_status);
4038                 if (data_status) {
4039                         debug_print("data_status->st_info_list %p\n", data_status->st_info_list);
4040                         mailimap_mailbox_data_status_free(data_status);
4041                 }
4042                 return MAILIMAP_ERROR_BAD_STATE;
4043         }
4044
4045         got_values = 0;
4046         if (data_status->st_info_list) {
4047                 for(iter = clist_begin(data_status->st_info_list) ; iter != NULL ;
4048                     iter = clist_next(iter)) {
4049                         struct mailimap_status_info * info;
4050
4051                         info = clist_content(iter);
4052                         switch (info->st_att) {
4053                         case MAILIMAP_STATUS_ATT_MESSAGES:
4054                                 if (messages) {
4055                                         * messages = info->st_value;
4056                                         got_values |= 1 << 0;
4057                                 }
4058                                 break;
4059
4060                         case MAILIMAP_STATUS_ATT_UIDNEXT:
4061                                 if (uid_next) {
4062                                         * uid_next = info->st_value;
4063                                         got_values |= 1 << 2;
4064                                 }
4065                                 break;
4066
4067                         case MAILIMAP_STATUS_ATT_UIDVALIDITY:
4068                                 if (uid_validity) {
4069                                         * uid_validity = info->st_value;
4070                                         got_values |= 1 << 3;
4071                                 }
4072                                 break;
4073
4074                         case MAILIMAP_STATUS_ATT_UNSEEN:
4075                                 if (unseen) {
4076                                         * unseen = info->st_value;
4077                                         got_values |= 1 << 4;
4078                                 }
4079                                 break;
4080                         }
4081                 }
4082         }
4083         mailimap_mailbox_data_status_free(data_status);
4084
4085         if (got_values != mask) {
4086                 g_warning("status: incomplete values received (%d)", got_values);
4087         }
4088         return MAILIMAP_NO_ERROR;
4089 }
4090
4091 static void imap_free_capabilities(IMAPSession *session)
4092 {
4093         slist_free_strings_full(session->capability);
4094         session->capability = NULL;
4095 }
4096
4097 /* low-level IMAP4rev1 commands */
4098
4099 static gint imap_cmd_login(IMAPSession *session,
4100                            const gchar *user, const gchar *pass,
4101                            const gchar *type)
4102 {
4103         int r;
4104         gint ok;
4105
4106         if (!strcmp(type, "plaintext") && imap_has_capability(session, "LOGINDISABLED")) {
4107                 gint ok = MAILIMAP_ERROR_BAD_STATE;
4108                 if (imap_has_capability(session, "STARTTLS")) {
4109 #ifdef USE_GNUTLS
4110                         log_warning(LOG_PROTOCOL, _("Server requires TLS to log in.\n"));
4111                         ok = imap_cmd_starttls(session);
4112                         if (ok != MAILIMAP_NO_ERROR) {
4113                                 log_warning(LOG_PROTOCOL, _("Can't start TLS session.\n"));
4114                                 return ok;
4115                         } else {
4116                                 /* refresh capas */
4117                                 imap_free_capabilities(session);
4118                                 if ((r = imap_get_capabilities(session)) != MAILIMAP_NO_ERROR) {
4119                                         imap_handle_error(SESSION(session), NULL, r);
4120                                         log_warning(LOG_PROTOCOL, _("Can't refresh capabilities.\n"));
4121                                         return r;
4122                                 }
4123                         }
4124 #else
4125                         log_error(LOG_PROTOCOL, _("Connection to %s failed: "
4126                                         "server requires TLS, but Claws Mail "
4127                                         "has been compiled without TLS "
4128                                         "support.\n"),
4129                                         SESSION(session)->server);
4130                         return MAILIMAP_ERROR_LOGIN;
4131 #endif
4132                 } else {
4133                         log_error(LOG_PROTOCOL, _("Server logins are disabled.\n"));
4134                         return MAILIMAP_ERROR_LOGIN;
4135                 }
4136         }
4137
4138         log_print(LOG_PROTOCOL, "IMAP4> Logging %s to %s using %s\n",
4139                         user,
4140                         SESSION(session)->server,
4141                         type);
4142         r = imap_threaded_login(session->folder, user, pass, type);
4143         if (r != MAILIMAP_NO_ERROR) {
4144                 imap_handle_error(SESSION(session), NULL, r);
4145                 log_print(LOG_PROTOCOL, "IMAP4< Error logging in to %s\n",
4146                                 SESSION(session)->server);
4147                 ok = r;
4148         } else {
4149                 log_print(LOG_PROTOCOL, "IMAP4< Login to %s successful\n",
4150                                 SESSION(session)->server);
4151                 ok = MAILIMAP_NO_ERROR;
4152         }
4153         return ok;
4154 }
4155
4156 static gint imap_cmd_noop(IMAPSession *session)
4157 {
4158         int r;
4159         unsigned int exists, recent, expunge, unseen, uidnext, uidval;
4160
4161         r = imap_threaded_noop(session->folder, &exists, &recent, &expunge, &unseen, &uidnext, &uidval);
4162         if (r != MAILIMAP_NO_ERROR) {
4163                 imap_handle_error(SESSION(session), NULL, r);
4164                 debug_print("noop err %d\n", r);
4165                 return r;
4166         }
4167
4168         if ((exists && exists != session->exists)
4169          || (recent && recent != session->recent)
4170          || (expunge && expunge != session->expunge)
4171          || (unseen && unseen != session->unseen)) {
4172                 session->folder_content_changed = TRUE;
4173         }
4174         if (uidnext != 0 && uidnext != session->uid_next) {
4175                 session->uid_next = uidnext;
4176                 session->folder_content_changed = TRUE;
4177         }
4178         if (uidval != 0 && uidval != session->uid_validity) {
4179                 session->uid_validity = uidval;
4180                 session->folder_content_changed = TRUE;
4181         }
4182
4183         session->exists = exists;
4184         session->recent = recent;
4185         session->expunge = expunge;
4186         session->unseen = unseen;
4187
4188         session_set_access_time(SESSION(session));
4189
4190         return MAILIMAP_NO_ERROR;
4191 }
4192
4193 #ifdef USE_GNUTLS
4194 static gint imap_cmd_starttls(IMAPSession *session)
4195 {
4196         int r;
4197
4198         r = imap_threaded_starttls(session->folder,
4199                 SESSION(session)->server, SESSION(session)->port);
4200         if (r != MAILIMAP_NO_ERROR) {
4201                 imap_handle_error(SESSION(session), NULL, r);
4202                 debug_print("starttls err %d\n", r);
4203                 return r;
4204         }
4205         return MAILIMAP_NO_ERROR;
4206 }
4207 #endif
4208
4209 static gint imap_cmd_select(IMAPSession *session, const gchar *folder,
4210                             gint *exists, gint *recent, gint *unseen,
4211                             guint32 *uid_validity, gint *can_create_flags,
4212                             GSList **ok_flags, gboolean block)
4213 {
4214         int r;
4215
4216         r = imap_threaded_select(session->folder, folder,
4217                                  exists, recent, unseen, uid_validity, can_create_flags, ok_flags);
4218         if (r != MAILIMAP_NO_ERROR) {
4219                 imap_handle_error(SESSION(session), NULL, r);
4220                 debug_print("select err %d\n", r);
4221                 return r;
4222         }
4223         return MAILIMAP_NO_ERROR;
4224 }
4225
4226 static gint imap_cmd_close(IMAPSession *session)
4227 {
4228         int r;
4229
4230         r = imap_threaded_close(session->folder);
4231         if (r != MAILIMAP_NO_ERROR) {
4232                 imap_handle_error(SESSION(session), NULL, r);
4233                 debug_print("close err %d\n", r);
4234                 return r;
4235         }
4236         g_free(session->mbox);
4237         session->mbox = NULL;
4238         session->exists = 0;
4239         session->recent = 0;
4240         session->expunge = 0;
4241         return MAILIMAP_NO_ERROR;
4242 }
4243
4244 static gint imap_cmd_examine(IMAPSession *session, const gchar *folder,
4245                              gint *exists, gint *recent, gint *unseen,
4246                              guint32 *uid_validity, gboolean block)
4247 {
4248         int r;
4249
4250         r = imap_threaded_examine(session->folder, folder,
4251                                   exists, recent, unseen, uid_validity);
4252         if (r != MAILIMAP_NO_ERROR) {
4253                 imap_handle_error(SESSION(session), NULL, r);
4254                 debug_print("examine err %d\n", r);
4255
4256                 return r;
4257         }
4258         return MAILIMAP_NO_ERROR;
4259 }
4260
4261 static gint imap_cmd_create(IMAPSession *session, const gchar *folder)
4262 {
4263         int r;
4264
4265         r = imap_threaded_create(session->folder, folder);
4266         if (r != MAILIMAP_NO_ERROR) {
4267                 imap_handle_error(SESSION(session), NULL, r);
4268                 return r;
4269         }
4270
4271         return MAILIMAP_NO_ERROR;
4272 }
4273
4274 static gint imap_cmd_rename(IMAPSession *session, const gchar *old_folder,
4275                             const gchar *new_folder)
4276 {
4277         int r;
4278
4279         r = imap_threaded_rename(session->folder, old_folder,
4280                                  new_folder);
4281         if (r != MAILIMAP_NO_ERROR) {
4282                 imap_handle_error(SESSION(session), NULL, r);
4283                 return r;
4284         }
4285
4286         return MAILIMAP_NO_ERROR;
4287 }
4288
4289 static gint imap_cmd_delete(IMAPSession *session, const gchar *folder)
4290 {
4291         int r;
4292
4293
4294         r = imap_threaded_delete(session->folder, folder);
4295         if (r != MAILIMAP_NO_ERROR) {
4296                 imap_handle_error(SESSION(session), NULL, r);
4297                 return r;
4298         }
4299
4300         return MAILIMAP_NO_ERROR;
4301 }
4302
4303 typedef struct _fetch_data {
4304         IMAPSession *session;
4305         guint32 uid;
4306         const gchar *filename;
4307         gboolean headers;
4308         gboolean body;
4309         gboolean done;
4310 } fetch_data;
4311
4312 static void *imap_cmd_fetch_thread(void *data)
4313 {
4314         fetch_data *stuff = (fetch_data *)data;
4315         IMAPSession *session = stuff->session;
4316         guint32 uid = stuff->uid;
4317         const gchar *filename = stuff->filename;
4318         int r;
4319
4320         if (stuff->body) {
4321                 r = imap_threaded_fetch_content(session->folder,
4322                                                uid, 1, filename);
4323         }
4324         else {
4325                 r = imap_threaded_fetch_content(session->folder,
4326                                                 uid, 0, filename);
4327         }
4328         if (r != MAILIMAP_NO_ERROR) {
4329                 imap_handle_error(SESSION(session), NULL, r);
4330                 debug_print("fetch err %d\n", r);
4331                 return GINT_TO_POINTER(r);
4332         }
4333         return GINT_TO_POINTER(MAILIMAP_NO_ERROR);
4334 }
4335
4336 static gint imap_cmd_fetch(IMAPSession *session, guint32 uid,
4337                                 const gchar *filename, gboolean headers,
4338                                 gboolean body)
4339 {
4340         fetch_data *data = g_new0(fetch_data, 1);
4341         int result = 0;
4342         data->done = FALSE;
4343         data->session = session;
4344         data->uid = uid;
4345         data->filename = filename;
4346         data->headers = headers;
4347         data->body = body;
4348
4349         if (prefs_common.work_offline &&
4350             !inc_offline_should_override(FALSE,
4351                 _("Claws Mail needs network access in order "
4352                   "to access the IMAP server."))) {
4353                 g_free(data);
4354                 return -1;
4355         }
4356         statusbar_print_all(_("Fetching message..."));
4357         result = GPOINTER_TO_INT(imap_cmd_fetch_thread(data));
4358         statusbar_pop_all();
4359         g_free(data);
4360         return result;
4361 }
4362
4363
4364 static gint imap_cmd_append(IMAPSession *session,
4365                             IMAPFolderItem *item,
4366                             const gchar *destfolder,
4367                             const gchar *file, IMAPFlags flags,
4368                             guint32 *new_uid)
4369 {
4370         struct mailimap_flag_list * flag_list;
4371         int r;
4372
4373         cm_return_val_if_fail(file != NULL, MAILIMAP_ERROR_BAD_STATE);
4374
4375         flag_list = imap_flag_to_lep(item, flags, NULL);
4376         lock_session(session);
4377         r = imap_threaded_append(session->folder, destfolder,
4378                          file, flag_list, (int *)new_uid);
4379         mailimap_flag_list_free(flag_list);
4380
4381         if (r != MAILIMAP_NO_ERROR) {
4382                 imap_handle_error(SESSION(session), NULL, r);
4383                 debug_print("append err %d\n", r);
4384                 return r;
4385         }
4386
4387         unlock_session(session);
4388
4389         return MAILIMAP_NO_ERROR;
4390 }
4391
4392 static gint imap_cmd_copy(IMAPSession *session, struct mailimap_set * set,
4393                           const gchar *destfolder,
4394                           struct mailimap_set **source, struct mailimap_set **dest)
4395 {
4396         int r;
4397
4398         g_return_val_if_fail(session != NULL, MAILIMAP_ERROR_BAD_STATE);
4399         g_return_val_if_fail(set != NULL, MAILIMAP_ERROR_BAD_STATE);
4400         g_return_val_if_fail(destfolder != NULL, MAILIMAP_ERROR_BAD_STATE);
4401
4402         r = imap_threaded_copy(session->folder, set, destfolder, source, dest);
4403         if (r != MAILIMAP_NO_ERROR) {
4404                 imap_handle_error(SESSION(session), NULL, r);
4405                 return r;
4406         }
4407
4408         return MAILIMAP_NO_ERROR;
4409 }
4410
4411 static gint imap_cmd_store(IMAPSession *session,
4412                            IMAPFolderItem *item,
4413                            struct mailimap_set * set,
4414                            IMAPFlags flags, GSList *tags, int do_add)
4415 {
4416         int r;
4417         struct mailimap_flag_list * flag_list = NULL;
4418         struct mailimap_store_att_flags * store_att_flags;
4419
4420         flag_list = imap_flag_to_lep(item, flags, tags);
4421
4422         if (do_add)
4423                 store_att_flags =
4424                         mailimap_store_att_flags_new_add_flags_silent(flag_list);
4425         else
4426                 store_att_flags =
4427                         mailimap_store_att_flags_new_remove_flags_silent(flag_list);
4428
4429         r = imap_threaded_store(session->folder, set, store_att_flags);
4430         mailimap_store_att_flags_free(store_att_flags);
4431         if (r != MAILIMAP_NO_ERROR) {
4432                 imap_handle_error(SESSION(session), NULL, r);
4433                 return r;
4434         }
4435
4436         return MAILIMAP_NO_ERROR;
4437 }
4438
4439 static gint imap_cmd_expunge(IMAPSession *session, gboolean do_expunge)
4440 {
4441         int r;
4442
4443         if (!do_expunge)
4444                 return MAILIMAP_NO_ERROR;
4445
4446         if (prefs_common.work_offline &&
4447             !inc_offline_should_override(FALSE,
4448                 _("Claws Mail needs network access in order "
4449                   "to access the IMAP server."))) {
4450                 return -1;
4451         }
4452
4453         r = imap_threaded_expunge(session->folder);
4454         if (r != MAILIMAP_NO_ERROR) {
4455                 imap_handle_error(SESSION(session), NULL, r);
4456                 return r;
4457         }
4458
4459         return MAILIMAP_NO_ERROR;
4460 }
4461
4462 gint imap_expunge(Folder *folder, FolderItem *item)
4463 {
4464         IMAPSession *session = imap_session_get(folder);
4465         if (session == NULL)
4466                 return -1;
4467
4468         return imap_cmd_expunge(session, TRUE);
4469 }
4470
4471 static void imap_path_separator_subst(gchar *str, gchar separator)
4472 {
4473         gchar *p;
4474         gboolean in_escape = FALSE;
4475
4476         if (!separator || separator == '/') return;
4477
4478         for (p = str; *p != '\0'; p++) {
4479                 if (*p == '/' && !in_escape)
4480                         *p = separator;
4481                 else if (*p == '&' && *(p + 1) != '-' && !in_escape)
4482                         in_escape = TRUE;
4483                 else if (*p == '-' && in_escape)
4484                         in_escape = FALSE;
4485         }
4486 }
4487
4488 static gboolean imap_rename_folder_func(GNode *node, gpointer data)
4489 {
4490         FolderItem *item = node->data;
4491         gchar **paths = data;
4492         const gchar *oldpath = paths[0];
4493         const gchar *newpath = paths[1];
4494         gchar *real_oldpath, *real_newpath;
4495         gchar *base;
4496         gchar *new_itempath;
4497         gint oldpathlen;
4498         IMAPSession *session = imap_session_get(item->folder);
4499         gint ok = MAILIMAP_NO_ERROR;
4500         oldpathlen = strlen(oldpath);
4501         if (strncmp(oldpath, item->path, oldpathlen) != 0) {
4502                 g_warning("path doesn't match: %s, %s", oldpath, item->path);
4503                 return TRUE;
4504         }
4505
4506         base = item->path + oldpathlen;
4507         while (*base == '/') base++;
4508         if (*base == '\0')
4509                 new_itempath = g_strdup(newpath);
4510         else
4511                 new_itempath = g_strconcat(newpath, "/", base,
4512                                            NULL);
4513
4514         real_oldpath = imap_get_real_path(session, IMAP_FOLDER(item->folder), item->path, &ok);
4515         g_free(item->path);
4516         item->path = new_itempath;
4517
4518         real_newpath = imap_get_real_path(session, IMAP_FOLDER(item->folder), item->path, &ok);
4519
4520         imap_threaded_subscribe(item->folder, real_oldpath, FALSE);
4521         imap_threaded_subscribe(item->folder, real_newpath, TRUE);
4522
4523         g_free(real_oldpath);
4524         g_free(real_newpath);
4525         return FALSE;
4526 }
4527
4528 static gint get_list_of_uids(IMAPSession *session, Folder *folder, IMAPFolderItem *item, GSList **msgnum_list)
4529 {
4530         GSList *uidlist, *elem;
4531         int r = -1;
4532         clist * lep_uidlist;
4533         gint ok, nummsgs = 0;
4534
4535         if (session == NULL) {
4536                 return -1;
4537         }
4538
4539         ok = imap_select(session, IMAP_FOLDER(folder), FOLDER_ITEM(item),
4540                          NULL, NULL, NULL, NULL, NULL, TRUE);
4541         if (ok != MAILIMAP_NO_ERROR) {
4542                 return -1;
4543         }
4544
4545         g_slist_free(item->uid_list);
4546         item->uid_list = NULL;
4547
4548         uidlist = NULL;
4549
4550         if (folder->account && folder->account->low_bandwidth) {
4551                 r = imap_threaded_search(folder, IMAP_SEARCH_TYPE_SIMPLE,
4552                                 NULL, NULL, NULL, &lep_uidlist);
4553         }
4554
4555         if (r == MAILIMAP_NO_ERROR) {
4556                 uidlist = imap_uid_list_from_lep(lep_uidlist, NULL);
4557                 mailimap_search_result_free(lep_uidlist);
4558         } else {
4559                 carray * lep_uidtab;
4560                 if (r != -1) { /* inited */
4561                         imap_handle_error(SESSION(session), NULL, r);
4562                         if (is_fatal(r))
4563                                 return -1;
4564                 }
4565                 r = imap_threaded_fetch_uid(folder, 1,
4566                                     &lep_uidtab);
4567                 if (r == MAILIMAP_NO_ERROR) {
4568                         uidlist = imap_uid_list_from_lep_tab(lep_uidtab);
4569                         imap_fetch_uid_list_free(lep_uidtab);
4570                 }
4571         }
4572
4573         if (r != MAILIMAP_NO_ERROR) {
4574                 imap_handle_error(SESSION(session), NULL, r);
4575                 return -1;
4576         }
4577
4578         for (elem = uidlist; elem != NULL; elem = g_slist_next(elem)) {
4579                 guint msgnum;
4580
4581                 msgnum = GPOINTER_TO_INT(elem->data);
4582
4583                 *msgnum_list = g_slist_prepend(*msgnum_list, GINT_TO_POINTER(msgnum));
4584                 item->uid_list = g_slist_prepend(item->uid_list, GINT_TO_POINTER(msgnum));
4585                 nummsgs++;
4586         }
4587         g_slist_free(uidlist);
4588
4589         return nummsgs;
4590
4591 }
4592
4593 gint imap_get_num_list(Folder *folder, FolderItem *_item, GSList **msgnum_list, gboolean *old_uids_valid)
4594 {
4595         IMAPFolderItem *item = (IMAPFolderItem *)_item;
4596         IMAPSession *session;
4597         gint nummsgs;
4598         GSList *uidlist = NULL;
4599         gchar *dir;
4600         gint known_list_len = 0;
4601         gchar *path;
4602
4603         debug_print("get_num_list\n");
4604
4605         g_return_val_if_fail(folder != NULL, -1);
4606         g_return_val_if_fail(item != NULL, -1);
4607         g_return_val_if_fail(item->item.path != NULL, -1);
4608         g_return_val_if_fail(FOLDER_CLASS(folder) == &imap_class, -1);
4609         g_return_val_if_fail(folder->account != NULL, -1);
4610
4611         known_list_len = g_slist_length(item->uid_list);
4612         if (!item->should_update) {
4613                 debug_print("get_num_list: nothing to update\n");
4614                 *old_uids_valid = TRUE;
4615                 if (known_list_len == item->item.total_msgs
4616                  && known_list_len > 0) {
4617                         *msgnum_list = g_slist_copy(item->uid_list);
4618                         return known_list_len;
4619                 } else {
4620                         debug_print("don't know the list length...\n");
4621                 }
4622         }
4623
4624         if (prefs_common.work_offline &&
4625             !inc_offline_should_override(FALSE,
4626                 _("Claws Mail needs network access in order "
4627                   "to access the IMAP server."))) {
4628                 return -1;
4629         }
4630
4631         path = folder_item_get_path(_item);
4632         if (!is_dir_exist(path)) {
4633                 if(is_file_exist(path))
4634                         claws_unlink(path);
4635                 make_dir_hier(path);
4636         }
4637         g_free(path);
4638
4639         debug_print("getting session...\n");
4640         session = imap_session_get(folder);
4641         g_return_val_if_fail(session != NULL, -1);
4642
4643         lock_session(session);
4644         if (FOLDER_ITEM(item)->path)
4645                 statusbar_print_all(_("Scanning folder %s%c%s..."),
4646                                       FOLDER_ITEM(item)->folder->name,
4647                                       '/',
4648                                       FOLDER_ITEM(item)->path);
4649         else
4650                 statusbar_print_all(_("Scanning folder %s..."),
4651                                       FOLDER_ITEM(item)->folder->name);
4652
4653         if (item->should_trash_cache) {
4654                 *old_uids_valid = FALSE;
4655                 debug_print("get_num_list: trashing num list\n");
4656                 debug_print("Freeing imap uid cache\n");
4657                 item->lastuid = 0;
4658                 g_slist_free(item->uid_list);
4659                 item->uid_list = NULL;
4660
4661                 imap_delete_all_cached_messages((FolderItem *)item);
4662         } else {
4663                 debug_print("get_num_list: updating num list\n");
4664                 *old_uids_valid = TRUE;
4665         }
4666
4667         nummsgs = get_list_of_uids(session, folder, item, &uidlist);
4668
4669         unlock_session(session);
4670
4671         /* session could be broken now, in case of fatal error */
4672
4673         debug_print("get_num_list: got %d msgs\n", nummsgs);
4674
4675         if (nummsgs < 0) {
4676                 statusbar_pop_all();
4677                 return -1;
4678         }
4679
4680         *msgnum_list = uidlist;
4681
4682         dir = folder_item_get_path((FolderItem *)item);
4683         debug_print("removing old messages from %s\n", dir);
4684         remove_numbered_files_not_in_list(dir, *msgnum_list);
4685         g_free(dir);
4686
4687         debug_print("get_num_list - ok - %i\n", nummsgs);
4688         statusbar_pop_all();
4689         item->should_trash_cache = FALSE;
4690         item->should_update = FALSE;
4691         return nummsgs;
4692 }
4693
4694 static MsgInfo *imap_parse_msg(const gchar *file, FolderItem *item)
4695 {
4696         MsgInfo *msginfo;
4697         MsgFlags flags;
4698
4699         flags.perm_flags = MSG_NEW|MSG_UNREAD;
4700         flags.tmp_flags = 0;
4701
4702         g_return_val_if_fail(item != NULL, NULL);
4703         g_return_val_if_fail(file != NULL, NULL);
4704
4705         if (folder_has_parent_of_type(item, F_QUEUE)) {
4706                 MSG_SET_TMP_FLAGS(flags, MSG_QUEUED);
4707         } else if (folder_has_parent_of_type(item, F_DRAFT)) {
4708                 MSG_SET_TMP_FLAGS(flags, MSG_DRAFT);
4709         }
4710
4711         msginfo = procheader_parse_file(file, flags, FALSE, FALSE);
4712         if (!msginfo) return NULL;
4713
4714         msginfo->plaintext_file = g_strdup(file);
4715         msginfo->folder = item;
4716
4717         return msginfo;
4718 }
4719
4720 GSList *imap_get_msginfos(Folder *folder, FolderItem *item,
4721                           GSList *msgnum_list)
4722 {
4723         IMAPSession *session;
4724         MsgInfoList *ret = NULL;
4725         gint ok;
4726
4727         debug_print("get_msginfos\n");
4728
4729         g_return_val_if_fail(folder != NULL, NULL);
4730         g_return_val_if_fail(item != NULL, NULL);
4731         g_return_val_if_fail(msgnum_list != NULL, NULL);
4732
4733         debug_print("getting session...\n");
4734         session = imap_session_get(folder);
4735         g_return_val_if_fail(session != NULL, NULL);
4736
4737         lock_session(session); /* unlocked later in the function */
4738
4739         debug_print("IMAP getting msginfos\n");
4740         ok = imap_select(session, IMAP_FOLDER(folder), item,
4741                          NULL, NULL, NULL, NULL, NULL, FALSE);
4742         if (ok != MAILIMAP_NO_ERROR) {
4743                 return NULL;
4744         }
4745         if (!(folder_has_parent_of_type(item, F_DRAFT) ||
4746               folder_has_parent_of_type(item, F_QUEUE))) {
4747                 ret = g_slist_concat(ret,
4748                         imap_get_uncached_messages(session, item,
4749                                                    msgnum_list, &ok));
4750                 if (ok != MAILIMAP_NO_ERROR)
4751                         return NULL;
4752                 unlock_session(session);
4753         } else {
4754                 MsgNumberList *sorted_list, *elem, *llast = NULL;
4755                 gint startnum, lastnum;
4756
4757                 unlock_session(session);
4758
4759                 sorted_list = g_slist_sort(g_slist_copy(msgnum_list), g_int_compare);
4760
4761                 startnum = lastnum = GPOINTER_TO_INT(sorted_list->data);
4762
4763                 llast = g_slist_last(ret);
4764                 for (elem = sorted_list;; elem = g_slist_next(elem)) {
4765                         guint num = 0;
4766
4767                         if (elem)
4768                                 num = GPOINTER_TO_INT(elem->data);
4769
4770                         if (num > lastnum + 1 || elem == NULL) {
4771                                 int i;
4772                                 for (i = startnum; i <= lastnum; ++i) {
4773                                         gchar *file;
4774                                         file = imap_fetch_msg(folder, item, i);
4775                                         if (file != NULL) {
4776                                                 MsgInfo *msginfo = imap_parse_msg(file, item);
4777                                                 if (msginfo != NULL) {
4778                                                         msginfo->msgnum = i;
4779                                                         if (llast == NULL)
4780                                                                 llast = ret = g_slist_append(ret, msginfo);
4781                                                         else {
4782                                                                 llast = g_slist_append(llast, msginfo);
4783                                                                 llast = llast->next;
4784                                                         }
4785                                                 }
4786                                                 g_free(file);
4787                                         }
4788                                 }
4789
4790                                 if (elem == NULL)
4791                                         break;
4792
4793                                 startnum = num;
4794                         }
4795                         lastnum = num;
4796                 }
4797
4798                 g_slist_free(sorted_list);
4799         }
4800         return ret;
4801 }
4802
4803 MsgInfo *imap_get_msginfo(Folder *folder, FolderItem *item, gint uid)
4804 {
4805         MsgInfo *msginfo = NULL;
4806         MsgInfoList *msginfolist;
4807         MsgNumberList numlist;
4808
4809         numlist.next = NULL;
4810         numlist.data = GINT_TO_POINTER(uid);
4811
4812         msginfolist = imap_get_msginfos(folder, item, &numlist);
4813         if (msginfolist != NULL) {
4814                 msginfo = msginfolist->data;
4815                 g_slist_free(msginfolist);
4816         }
4817
4818         return msginfo;
4819 }
4820
4821 gboolean imap_scan_required(Folder *folder, FolderItem *_item)
4822 {
4823         IMAPSession *session;
4824         IMAPFolderItem *item = (IMAPFolderItem *)_item;
4825         gint ok, exists = 0, unseen = 0;
4826         guint32 uid_next = 0, uid_val = 0;
4827         gboolean selected_folder;
4828
4829         g_return_val_if_fail(folder != NULL, FALSE);
4830         g_return_val_if_fail(item != NULL, FALSE);
4831         g_return_val_if_fail(item->item.folder != NULL, FALSE);
4832         g_return_val_if_fail(FOLDER_CLASS(item->item.folder) == &imap_class, FALSE);
4833
4834         if (item->item.path == NULL)
4835                 return FALSE;
4836
4837         if (item->should_update) {
4838                 debug_print("scan already required\n");
4839                 return TRUE;
4840         }
4841         debug_print("getting session...\n");
4842         session = imap_session_get(folder);
4843
4844         g_return_val_if_fail(session != NULL, FALSE);
4845         lock_session(session); /* unlocked later in the function */
4846
4847         selected_folder = (session->mbox != NULL) &&
4848                           (!strcmp(session->mbox, item->item.path));
4849         if (selected_folder) {
4850                 if (!session->folder_content_changed) {
4851                         ok = imap_cmd_noop(session);
4852                         if (ok != MAILIMAP_NO_ERROR) {
4853                                 debug_print("disconnected!\n");
4854                                 if (!is_fatal(ok))
4855                                         session = imap_reconnect_if_possible(folder, session);
4856                                 else
4857                                         session = imap_session_get(folder);
4858                                 if (session == NULL)
4859                                         return FALSE;
4860                         }
4861
4862                         if (session->folder_content_changed) {
4863                                 debug_print("CHANGED (self-noop)! scan_required\n");
4864                                 item->should_update = TRUE;
4865                                 if (session->uid_validity && session->uid_validity != item->item.mtime) {
4866                                         item->item.mtime = session->uid_validity;
4867                                         item->should_trash_cache = TRUE;
4868                                 }
4869                                 unlock_session(session);
4870                                 return TRUE;
4871                         }
4872                 } else {
4873                         debug_print("CHANGED (previous noop)! scan_required\n");
4874                         item->should_update = TRUE;
4875                         if (session->uid_validity && session->uid_validity != item->item.mtime) {
4876                                 item->item.mtime = session->uid_validity;
4877                                 item->should_trash_cache = TRUE;
4878                         }
4879                         unlock_session(session);
4880                         return TRUE;
4881                 }
4882         } else {
4883                 ok = imap_status(session, IMAP_FOLDER(folder), item->item.path, IMAP_FOLDER_ITEM(item),
4884                                  &exists, &uid_next, &uid_val, &unseen, FALSE);
4885                 if (ok != MAILIMAP_NO_ERROR) {
4886                         return FALSE;
4887                 }
4888
4889                 debug_print("exists %d, item->item.total_msgs %d\n"
4890                             "\tunseen %d, item->item.unread_msgs %d\n"
4891                             "\tuid_next %d, item->uid_next %d\n"
4892                             "\tuid_val %d, item->item.mtime %ld\n",
4893                             exists, item->item.total_msgs, unseen, item->item.unread_msgs,
4894                             uid_next, item->uid_next, uid_val, (long)(item->item.mtime));
4895                 if (exists != item->item.total_msgs
4896                     || unseen != item->item.unread_msgs
4897                     || uid_next != item->uid_next
4898                     || uid_val != item->item.mtime) {
4899                         debug_print("CHANGED (status)! scan_required\n");
4900                         item->last_change = time(NULL);
4901                         item->should_update = TRUE;
4902                         item->uid_next = uid_next;
4903                         if (uid_val != item->item.mtime) {
4904                                 item->item.mtime = uid_val;
4905                                 item->should_trash_cache = TRUE;
4906                         }
4907                         unlock_session(session);
4908                         return TRUE;
4909                 }
4910         }
4911         unlock_session(session);
4912
4913         item->should_update = FALSE;
4914         return FALSE;
4915 }
4916
4917 void imap_change_flags(Folder *folder, FolderItem *item, MsgInfo *msginfo, MsgPermFlags newflags)
4918 {
4919         IMAPSession *session;
4920         IMAPFlags flags_set = 0, flags_unset = 0;
4921         gint ok = MAILIMAP_NO_ERROR;
4922         MsgNumberList numlist;
4923         hashtable_data *ht_data = NULL;
4924
4925         g_return_if_fail(folder != NULL);
4926         g_return_if_fail(folder->klass == &imap_class);
4927         g_return_if_fail(item != NULL);
4928         g_return_if_fail(item->folder == folder);
4929         g_return_if_fail(msginfo != NULL);
4930         g_return_if_fail(msginfo->folder == item);
4931
4932         if (!MSG_IS_MARKED(msginfo->flags) &&  (newflags & MSG_MARKED))
4933                 flags_set |= IMAP_FLAG_FLAGGED;
4934         if ( MSG_IS_MARKED(msginfo->flags) && !(newflags & MSG_MARKED))
4935                 flags_unset |= IMAP_FLAG_FLAGGED;
4936
4937         if (!MSG_IS_UNREAD(msginfo->flags) &&  (newflags & MSG_UNREAD))
4938                 flags_unset |= IMAP_FLAG_SEEN;
4939         if ( MSG_IS_UNREAD(msginfo->flags) && !(newflags & MSG_UNREAD))
4940                 flags_set |= IMAP_FLAG_SEEN;
4941
4942         if (!MSG_IS_REPLIED(msginfo->flags) &&  (newflags & MSG_REPLIED))
4943                 flags_set |= IMAP_FLAG_ANSWERED;
4944         if ( MSG_IS_REPLIED(msginfo->flags) && !(newflags & MSG_REPLIED))
4945                 flags_unset |= IMAP_FLAG_ANSWERED;
4946
4947         if (!MSG_IS_FORWARDED(msginfo->flags) &&  (newflags & MSG_FORWARDED))
4948                 flags_set |= IMAP_FLAG_FORWARDED;
4949         if ( MSG_IS_FORWARDED(msginfo->flags) && !(newflags & MSG_FORWARDED))
4950                 flags_unset |= IMAP_FLAG_FORWARDED;
4951
4952         if (!MSG_IS_SPAM(msginfo->flags) &&  (newflags & MSG_SPAM)) {
4953                 flags_set |= IMAP_FLAG_SPAM;
4954                 flags_unset |= IMAP_FLAG_HAM;
4955         }
4956         if ( MSG_IS_SPAM(msginfo->flags) && !(newflags & MSG_SPAM)) {
4957                 flags_set |= IMAP_FLAG_HAM;
4958                 flags_unset |= IMAP_FLAG_SPAM;
4959         }
4960         if (!MSG_IS_DELETED(msginfo->flags) &&  (newflags & MSG_DELETED))
4961                 flags_set |= IMAP_FLAG_DELETED;
4962         if ( MSG_IS_DELETED(msginfo->flags) && !(newflags & MSG_DELETED))
4963                 flags_unset |= IMAP_FLAG_DELETED;
4964
4965         if (!flags_set && !flags_unset) {
4966                 /* the changed flags were not translatable to IMAP-speak.
4967                  * like MSG_POSTFILTERED, so just apply. */
4968                 msginfo->flags.perm_flags = newflags;
4969                 return;
4970         }
4971
4972         debug_print("getting session...\n");
4973         session = imap_session_get(folder);
4974         if (!session) {
4975                 return;
4976         }
4977
4978         if ((ok = imap_select(session, IMAP_FOLDER(folder), msginfo->folder,
4979             NULL, NULL, NULL, NULL, NULL, FALSE)) != MAILIMAP_NO_ERROR) {
4980                 return;
4981         }
4982         numlist.next = NULL;
4983         numlist.data = GINT_TO_POINTER(msginfo->msgnum);
4984
4985         if (IMAP_FOLDER_ITEM(item)->batching) {
4986                 /* instead of performing an UID STORE command for each message change,
4987                  * as a lot of them can change "together", we just fill in hashtables
4988                  * and defer the treatment so that we're able to send only one
4989                  * command.
4990                  */
4991                 debug_print("IMAP batch mode on, deferring flags change\n");
4992                 if (flags_set) {
4993                         ht_data = g_hash_table_lookup(IMAP_FOLDER_ITEM(item)->flags_set_table,
4994                                 GINT_TO_POINTER(flags_set));
4995                         if (ht_data == NULL) {
4996                                 ht_data = g_new0(hashtable_data, 1);
4997                                 ht_data->item = IMAP_FOLDER_ITEM(item);
4998                                 g_hash_table_insert(IMAP_FOLDER_ITEM(item)->flags_set_table,
4999                                         GINT_TO_POINTER(flags_set), ht_data);
5000                         }
5001                         ht_data->msglist = g_slist_prepend(ht_data->msglist, GINT_TO_POINTER(msginfo->msgnum));
5002                 }
5003                 if (flags_unset) {
5004                         ht_data = g_hash_table_lookup(IMAP_FOLDER_ITEM(item)->flags_unset_table,
5005                                 GINT_TO_POINTER(flags_unset));
5006                         if (ht_data == NULL) {
5007                                 ht_data = g_new0(hashtable_data, 1);
5008                                 ht_data->item = IMAP_FOLDER_ITEM(item);
5009                                 g_hash_table_insert(IMAP_FOLDER_ITEM(item)->flags_unset_table,
5010                                         GINT_TO_POINTER(flags_unset), ht_data);
5011                         }
5012                         ht_data->msglist = g_slist_prepend(ht_data->msglist,
5013                                         GINT_TO_POINTER(msginfo->msgnum));
5014                 }
5015         } else {
5016                 debug_print("IMAP changing flags\n");
5017                 if (flags_set) {
5018                         ok = imap_set_message_flags(session, IMAP_FOLDER_ITEM(item), &numlist, flags_set, NULL, TRUE);
5019                         if (ok != MAILIMAP_NO_ERROR) {
5020                                 return;
5021                         }
5022                 }
5023
5024                 if (flags_unset) {
5025                         ok = imap_set_message_flags(session, IMAP_FOLDER_ITEM(item), &numlist, flags_unset, NULL, FALSE);
5026                         if (ok != MAILIMAP_NO_ERROR) {
5027                                 return;
5028                         }
5029                 }
5030         }
5031         msginfo->flags.perm_flags = newflags;
5032         return;
5033 }
5034
5035 static gint imap_remove_msg(Folder *folder, FolderItem *item, gint uid)
5036 {
5037         gint ok;
5038         IMAPSession *session;
5039         gchar *dir;
5040         MsgNumberList numlist;
5041
5042         g_return_val_if_fail(folder != NULL, -1);
5043         g_return_val_if_fail(FOLDER_CLASS(folder) == &imap_class, -1);
5044         g_return_val_if_fail(item != NULL, -1);
5045
5046         debug_print("getting session...\n");
5047         session = imap_session_get(folder);
5048         if (!session) return -1;
5049
5050         ok = imap_select(session, IMAP_FOLDER(folder), item,
5051                          NULL, NULL, NULL, NULL, NULL, FALSE);
5052         if (ok != MAILIMAP_NO_ERROR) {
5053                 return ok;
5054         }
5055         numlist.next = NULL;
5056         numlist.data = GINT_TO_POINTER(uid);
5057
5058         ok = imap_set_message_flags
5059                 (session, IMAP_FOLDER_ITEM(item), &numlist, IMAP_FLAG_DELETED, NULL, TRUE);
5060         if (ok != MAILIMAP_NO_ERROR) {
5061                 log_warning(LOG_PROTOCOL, _("can't set deleted flags: %d\n"), uid);
5062                 return ok;
5063         }
5064
5065         ok = imap_cmd_expunge(session, folder->account->imap_use_trash);
5066
5067         if (ok != MAILIMAP_NO_ERROR) {
5068                 log_warning(LOG_PROTOCOL, _("can't expunge\n"));
5069                 return ok;
5070         }
5071
5072         IMAP_FOLDER_ITEM(item)->uid_list = g_slist_remove(
5073             IMAP_FOLDER_ITEM(item)->uid_list, numlist.data);
5074         dir = folder_item_get_path(item);
5075         if (is_dir_exist(dir))
5076                 remove_numbered_files(dir, uid, uid);
5077         g_free(dir);
5078         return MAILIMAP_NO_ERROR;
5079 }
5080
5081 static gint compare_msginfo(gconstpointer a, gconstpointer b)
5082 {
5083         return ((MsgInfo *)a)->msgnum - ((MsgInfo *)b)->msgnum;
5084 }
5085
5086 static guint gslist_find_next_num(MsgNumberList **list, guint num)
5087 {
5088         GSList *elem;
5089
5090         g_return_val_if_fail(list != NULL, -1);
5091
5092         for (elem = *list; elem != NULL; elem = g_slist_next(elem))
5093                 if (GPOINTER_TO_INT(elem->data) >= num)
5094                         break;
5095         *list = elem;
5096         return elem != NULL ? GPOINTER_TO_INT(elem->data) : (gint)-1;
5097 }
5098
5099 static gboolean flag_ok(IMAPFolderItem *item, guint flag)
5100 {
5101         if (item->ok_flags && g_slist_find(item->ok_flags, GUINT_TO_POINTER(flag))) {
5102                 debug_print("flag %d is OK\n", flag);
5103                 return TRUE;
5104         }
5105         if (item->can_create_flags == ITEM_CAN_CREATE_FLAGS) {
5106                 debug_print("creating flags is OK\n");
5107                 return TRUE;
5108         }
5109         return FALSE;
5110 }
5111
5112 /*
5113  * NEW and DELETED flags are not syncronized
5114  * - The NEW/RECENT flags in IMAP folders can not really be directly
5115  *   modified by Sylpheed
5116  * - The DELETE/DELETED flag in IMAP and Sylpheed don't have the same
5117  *   meaning, in IMAP it always removes the messages from the FolderItem
5118  *   in Sylpheed it can mean to move the message to trash
5119  */
5120
5121 typedef struct _get_flags_data {
5122         Folder *folder;
5123         FolderItem *item;
5124         MsgInfoList *msginfo_list;
5125         GHashTable *msgflags;
5126         gboolean full_search;
5127         gboolean done;
5128 } get_flags_data;
5129
5130 static /*gint*/ void *imap_get_flags_thread(void *data)
5131 {
5132         get_flags_data *stuff = (get_flags_data *)data;
5133         Folder *folder = stuff->folder;
5134         FolderItem *fitem = (FolderItem *) stuff->item;
5135         MsgInfoList *msginfo_list = stuff->msginfo_list;
5136         GHashTable *msgflags = stuff->msgflags;
5137         GSList *elem;
5138         carray * lep_uidtab;
5139         IMAPSession *session;
5140         gint ok;
5141         int r = MAILIMAP_NO_ERROR;
5142         GHashTable *flags_hash = NULL;
5143         GHashTable *tags_hash = NULL;
5144         gboolean full_search = stuff->full_search;
5145         GSList *sorted_list = NULL;
5146         GSList *unseen = NULL, *answered = NULL, *flagged = NULL, *deleted = NULL, *forwarded = NULL, *spam = NULL;
5147         GSList *seq_list, *cur;
5148         gboolean reverse_seen = FALSE;
5149         gboolean selected_folder;
5150         gint exists_cnt, unseen_cnt;
5151         gboolean got_alien_tags = FALSE;
5152
5153         session = imap_session_get(folder);
5154
5155         if (session == NULL) {
5156                 stuff->done = TRUE;
5157                 return GINT_TO_POINTER(-1);
5158         }
5159         selected_folder = (session->mbox != NULL) &&
5160                           (!strcmp(session->mbox, fitem->path));
5161
5162         lock_session(session);
5163         if (!selected_folder) {
5164                 ok = imap_select(session, IMAP_FOLDER(folder), fitem,
5165                         &exists_cnt, NULL, &unseen_cnt, NULL, NULL, TRUE);
5166                 if (ok != MAILIMAP_NO_ERROR) {
5167                         stuff->done = TRUE;
5168                         return GINT_TO_POINTER(-1);
5169                 }
5170
5171                 if (unseen_cnt > exists_cnt / 2)
5172                         reverse_seen = TRUE;
5173         }
5174         else {
5175                 if (fitem->unread_msgs > fitem->total_msgs / 2)
5176                         reverse_seen = TRUE;
5177         }
5178
5179         sorted_list = g_slist_sort(g_slist_copy(msginfo_list), compare_msginfo);
5180         if (!full_search) {
5181                 seq_list = imap_get_lep_set_from_msglist(IMAP_FOLDER(folder), msginfo_list);
5182         } else {
5183                 struct mailimap_set * set;
5184                 set = mailimap_set_new_interval(1, 0);
5185                 seq_list = g_slist_append(NULL, set);
5186         }
5187
5188         if (folder->account && folder->account->low_bandwidth) {
5189                 for (cur = seq_list; cur != NULL; cur = g_slist_next(cur)) {
5190                         struct mailimap_set * imapset;
5191                         clist * lep_uidlist;
5192                         int r;
5193
5194                         imapset = cur->data;
5195                         if (reverse_seen) {
5196                                 r = imap_threaded_search(folder, IMAP_SEARCH_TYPE_SEEN, NULL,
5197                                                          NULL, full_search ? NULL:imapset, &lep_uidlist);
5198                         }
5199                         else {
5200                                 r = imap_threaded_search(folder,
5201                                                          IMAP_SEARCH_TYPE_UNSEEN, NULL,
5202                                                          NULL, full_search ? NULL:imapset, &lep_uidlist);
5203                         }
5204                         if (r == MAILIMAP_NO_ERROR) {
5205                                 GSList * uidlist;
5206
5207                                 uidlist = imap_uid_list_from_lep(lep_uidlist, NULL);
5208                                 mailimap_search_result_free(lep_uidlist);
5209
5210                                 unseen = g_slist_concat(unseen, uidlist);
5211                         } else {
5212                                 imap_handle_error(SESSION(session), NULL, r);
5213                                 goto bail;
5214                         }
5215
5216                         r = imap_threaded_search(folder, IMAP_SEARCH_TYPE_FLAGGED, NULL,
5217                                                  NULL, full_search ? NULL:imapset, &lep_uidlist);
5218                         if (r == MAILIMAP_NO_ERROR) {
5219                                 GSList * uidlist;
5220
5221                                 uidlist = imap_uid_list_from_lep(lep_uidlist, NULL);
5222                                 mailimap_search_result_free(lep_uidlist);
5223
5224                                 flagged = g_slist_concat(flagged, uidlist);
5225                         } else {
5226                                 imap_handle_error(SESSION(session), NULL, r);
5227                                 goto bail;
5228                         }
5229
5230                         if (fitem->opened || fitem->processing_pending || fitem == folder->inbox) {
5231                                 r = imap_threaded_search(folder, IMAP_SEARCH_TYPE_ANSWERED, NULL,
5232                                                          NULL, full_search ? NULL:imapset, &lep_uidlist);
5233                                 if (r == MAILIMAP_NO_ERROR) {
5234                                         GSList * uidlist;
5235
5236                                         uidlist = imap_uid_list_from_lep(lep_uidlist, NULL);
5237                                         mailimap_search_result_free(lep_uidlist);
5238
5239                                         answered = g_slist_concat(answered, uidlist);
5240                                 } else {
5241                                         imap_handle_error(SESSION(session), NULL, r);
5242                                         goto bail;
5243                                 }
5244
5245                                 if (flag_ok(IMAP_FOLDER_ITEM(fitem), IMAP_FLAG_FORWARDED)) {
5246                                         r = imap_threaded_search(folder, IMAP_SEARCH_TYPE_FORWARDED, NULL,
5247                                                                  NULL, full_search ? NULL:imapset, &lep_uidlist);
5248                                         if (r == MAILIMAP_NO_ERROR) {
5249                                                 GSList * uidlist;
5250
5251                                                 uidlist = imap_uid_list_from_lep(lep_uidlist, NULL);
5252                                                 mailimap_search_result_free(lep_uidlist);
5253
5254                                                 forwarded = g_slist_concat(forwarded, uidlist);
5255                                         } else {
5256                                                 imap_handle_error(SESSION(session), NULL, r);
5257                                                 goto bail;
5258                                         }
5259                                 }
5260
5261                                 if (flag_ok(IMAP_FOLDER_ITEM(fitem), IMAP_FLAG_SPAM)) {
5262                                         r = imap_threaded_search(folder, IMAP_SEARCH_TYPE_SPAM, NULL,
5263                                                                  NULL, full_search ? NULL:imapset, &lep_uidlist);
5264                                         if (r == MAILIMAP_NO_ERROR) {
5265                                                 GSList * uidlist;
5266
5267                                                 uidlist = imap_uid_list_from_lep(lep_uidlist, NULL);
5268                                                 mailimap_search_result_free(lep_uidlist);
5269
5270                                                 spam = g_slist_concat(spam, uidlist);
5271                                         } else {
5272                                                 imap_handle_error(SESSION(session), NULL, r);
5273                                                 goto bail;
5274                                         }
5275                                 }
5276
5277                                 r = imap_threaded_search(folder, IMAP_SEARCH_TYPE_DELETED, NULL,
5278                                                          NULL, full_search ? NULL:imapset, &lep_uidlist);
5279                                 if (r == MAILIMAP_NO_ERROR) {
5280                                         GSList * uidlist;
5281
5282                                         uidlist = imap_uid_list_from_lep(lep_uidlist, NULL);
5283                                         mailimap_search_result_free(lep_uidlist);
5284
5285                                         deleted = g_slist_concat(deleted, uidlist);
5286                                 } else {
5287                                         imap_handle_error(SESSION(session), NULL, r);
5288                                         goto bail;
5289                                 }
5290                         }
5291                 }
5292
5293         } else {
5294                 r = imap_threaded_fetch_uid_flags(folder, 1, &lep_uidtab);
5295                 if (r == MAILIMAP_NO_ERROR) {
5296                         flags_hash = g_hash_table_new_full(g_direct_hash, g_direct_equal, NULL, NULL);
5297                         tags_hash = g_hash_table_new_full(g_direct_hash, g_direct_equal, NULL, NULL);
5298                         imap_flags_hash_from_lep_uid_flags_tab(lep_uidtab, flags_hash, tags_hash);
5299                         imap_fetch_uid_flags_list_free(lep_uidtab);
5300                 } else {
5301                         imap_handle_error(SESSION(session), NULL, r);
5302                         goto bail;
5303                 }
5304         }
5305
5306 bail:
5307         if (r == MAILIMAP_NO_ERROR)
5308                 unlock_session(session);
5309
5310         for (elem = sorted_list; elem != NULL; elem = g_slist_next(elem)) {
5311                 MsgInfo *msginfo;
5312                 MsgPermFlags flags, oldflags;
5313                 gboolean wasnew;
5314
5315                 msginfo = (MsgInfo *) elem->data;
5316                 flags = msginfo->flags.perm_flags;
5317                 wasnew = (flags & MSG_NEW);
5318                 oldflags = flags & ~(MSG_NEW|MSG_UNREAD|MSG_REPLIED|MSG_FORWARDED|MSG_MARKED|MSG_DELETED|MSG_SPAM);
5319
5320                 if (folder->account && folder->account->low_bandwidth) {
5321                         if (fitem->opened || fitem->processing_pending || fitem == folder->inbox) {
5322                                 flags &= ~((reverse_seen ? 0 : MSG_UNREAD | MSG_NEW) | MSG_REPLIED | MSG_FORWARDED | MSG_MARKED | MSG_SPAM);
5323                         } else {
5324                                 flags &= ~((reverse_seen ? 0 : MSG_UNREAD | MSG_NEW | MSG_MARKED));
5325                         }
5326                         if (reverse_seen)
5327                                 flags |= MSG_UNREAD | (wasnew ? MSG_NEW : 0);
5328                         if (gslist_find_next_num(&unseen, msginfo->msgnum) == msginfo->msgnum) {
5329                                 if (!reverse_seen) {
5330                                         flags |= MSG_UNREAD | (wasnew ? MSG_NEW : 0);
5331                                 } else {
5332                                         flags &= ~(MSG_UNREAD | MSG_NEW);
5333                                 }
5334                         }
5335
5336                         if (gslist_find_next_num(&flagged, msginfo->msgnum) == msginfo->msgnum)
5337                                 flags |= MSG_MARKED;
5338                         else
5339                                 flags &= ~MSG_MARKED;
5340
5341                         if (fitem->opened || fitem->processing_pending || fitem == folder->inbox) {
5342                                 if (gslist_find_next_num(&answered, msginfo->msgnum) == msginfo->msgnum)
5343                                         flags |= MSG_REPLIED;
5344                                 else
5345                                         flags &= ~MSG_REPLIED;
5346                                 if (gslist_find_next_num(&forwarded, msginfo->msgnum) == msginfo->msgnum)
5347                                         flags |= MSG_FORWARDED;
5348                                 else
5349                                         flags &= ~MSG_FORWARDED;
5350                                 if (gslist_find_next_num(&spam, msginfo->msgnum) == msginfo->msgnum)
5351                                         flags |= MSG_SPAM;
5352                                 else
5353                                         flags &= ~MSG_SPAM;
5354                                 if (gslist_find_next_num(&deleted, msginfo->msgnum) == msginfo->msgnum)
5355                                         flags |= MSG_DELETED;
5356                                 else
5357                                         flags &= ~MSG_DELETED;
5358                         }
5359                 } else {
5360                         if (flags_hash != NULL) {
5361
5362                                 flags = GPOINTER_TO_INT(g_hash_table_lookup(flags_hash,
5363                                                 GINT_TO_POINTER(msginfo->msgnum)));
5364                         }
5365
5366                         if ((flags & MSG_UNREAD) == 0)
5367                                 flags &= ~MSG_NEW;
5368                         else if (wasnew)
5369                                 flags |= MSG_NEW;
5370                         flags |= oldflags;
5371
5372                         if (tags_hash != NULL) {
5373                                 GSList *tags = g_hash_table_lookup(tags_hash, GINT_TO_POINTER(msginfo->msgnum));
5374                                 GSList *cur;
5375
5376                                 g_slist_free(msginfo->tags);
5377                                 msginfo->tags = NULL;
5378
5379                                 for (cur = tags; cur; cur = cur->next) {
5380                                         gchar *real_tag = imap_modified_utf7_to_utf8(cur->data, TRUE);
5381                                         gint id = 0;
5382                                         id = tags_get_id_for_str(real_tag);
5383                                         if (id == -1) {
5384                                                 id = tags_add_tag(real_tag);
5385                                                 got_alien_tags = TRUE;
5386                                         }
5387                                         msginfo->tags = g_slist_append(
5388                                                                 msginfo->tags,
5389                                                                 GINT_TO_POINTER(id));
5390                                         g_free(real_tag);
5391                                 }
5392                                 slist_free_strings_full(tags);
5393                         }
5394                 }
5395
5396                 g_hash_table_insert(msgflags, msginfo, GINT_TO_POINTER(flags));
5397         }
5398
5399         if (got_alien_tags) {
5400                 tags_write_tags();
5401                 main_window_reflect_tags_changes(mainwindow_get_mainwindow());
5402         }
5403
5404         if (flags_hash)
5405                 g_hash_table_destroy(flags_hash);
5406         if (tags_hash)
5407                 g_hash_table_destroy(tags_hash);
5408
5409         imap_lep_set_free(seq_list);
5410         g_slist_free(flagged);
5411         g_slist_free(deleted);
5412         g_slist_free(answered);
5413         g_slist_free(forwarded);
5414         g_slist_free(spam);
5415         g_slist_free(unseen);
5416         g_slist_free(sorted_list);
5417
5418         stuff->done = TRUE;
5419         return GINT_TO_POINTER(0);
5420 }
5421
5422 static gint imap_get_flags(Folder *folder, FolderItem *item,
5423                            MsgInfoList *msginfo_list, GHashTable *msgflags)
5424 {
5425         gint result;
5426         get_flags_data *data = g_new0(get_flags_data, 1);
5427         data->done = FALSE;
5428         data->folder = folder;
5429         data->item = item;
5430         data->msginfo_list = msginfo_list;
5431         data->msgflags = msgflags;
5432         data->full_search = FALSE;
5433
5434         GSList *tmp = NULL, *cur;
5435
5436         if (prefs_common.work_offline &&
5437             !inc_offline_should_override(FALSE,
5438                 _("Claws Mail needs network access in order "
5439                   "to access the IMAP server."))) {
5440                 g_free(data);
5441                 return -1;
5442         }
5443
5444         tmp = folder_item_get_msg_list(item);
5445
5446         if (g_slist_length(tmp) <= g_slist_length(msginfo_list))
5447                 data->full_search = TRUE;
5448
5449         for (cur = tmp; cur; cur = cur->next)
5450                 procmsg_msginfo_free((MsgInfo **)&(cur->data));
5451
5452         g_slist_free(tmp);
5453
5454         result = GPOINTER_TO_INT(imap_get_flags_thread(data));
5455
5456         g_free(data);
5457         return result;
5458
5459 }
5460
5461 static gboolean process_flags(gpointer key, gpointer value, gpointer user_data)
5462 {
5463         gboolean flags_set = GPOINTER_TO_INT(user_data);
5464         gint flags_value = GPOINTER_TO_INT(key);
5465         hashtable_data *data = (hashtable_data *)value;
5466         IMAPFolderItem *_item = data->item;
5467         FolderItem *item = (FolderItem *)_item;
5468         gint ok = MAILIMAP_ERROR_BAD_STATE;
5469         IMAPSession *session = NULL;
5470
5471         debug_print("getting session...\n");
5472         session = imap_session_get(item->folder);
5473
5474         data->msglist = g_slist_reverse(data->msglist);
5475
5476         debug_print("IMAP %ssetting flags to %d for %d messages\n",
5477                 flags_set?"":"un",
5478                 flags_value,
5479                 g_slist_length(data->msglist));
5480
5481         lock_session(session);
5482         if (session) {
5483                 ok = imap_select(session, IMAP_FOLDER(item->folder), item,
5484                          NULL, NULL, NULL, NULL, NULL, FALSE);
5485         }
5486         if (ok == MAILIMAP_NO_ERROR) {
5487                 ok = imap_set_message_flags(session, IMAP_FOLDER_ITEM(item),
5488                         data->msglist, flags_value, NULL, flags_set);
5489         } else {
5490                 g_warning("can't select mailbox %s", item->path);
5491         }
5492
5493         if (!is_fatal(ok))
5494                 unlock_session(session);
5495
5496         g_slist_free(data->msglist);
5497         g_free(data);
5498         return TRUE;
5499 }
5500
5501 static gboolean process_tags(gpointer key, gpointer value, gpointer user_data)
5502 {
5503         gboolean tags_set = GPOINTER_TO_INT(user_data);
5504         TagsData *data = (TagsData *)value;
5505         IMAPFolderItem *_item = data->item;
5506         FolderItem *item = (FolderItem *)_item;
5507         gchar *str = data->str;
5508         gint ok = MAILIMAP_ERROR_BAD_STATE;
5509         IMAPSession *session = NULL;
5510
5511         debug_print("getting session...\n");
5512         session = imap_session_get(item->folder);
5513
5514         data->msglist = g_slist_reverse(data->msglist);
5515
5516         debug_print("IMAP %ssetting tags %s for %d messages\n",
5517                 tags_set?"":"un",
5518                 str,
5519                 g_slist_length(data->msglist));
5520
5521         lock_session(session);
5522         if (session) {
5523                 ok = imap_select(session, IMAP_FOLDER(item->folder), item,
5524                          NULL, NULL, NULL, NULL, NULL, FALSE);
5525         }
5526         if (ok == MAILIMAP_NO_ERROR) {
5527                 GSList list;
5528                 list.data = str;
5529                 list.next = NULL;
5530                 ok = imap_set_message_flags(session, IMAP_FOLDER_ITEM(item),
5531                         data->msglist, 0, &list, tags_set);
5532         } else {
5533                 g_warning("can't select mailbox %s", item->path);
5534         }
5535
5536         if (!is_fatal(ok))
5537                 unlock_session(session);
5538
5539         g_slist_free(data->msglist);
5540         g_free(data->str);
5541         g_free(data);
5542         return TRUE;
5543 }
5544
5545 static void process_hashtable(IMAPFolderItem *item)
5546 {
5547         if (item->flags_set_table) {
5548                 g_hash_table_foreach_remove(item->flags_set_table, process_flags, GINT_TO_POINTER(TRUE));
5549                 g_hash_table_destroy(item->flags_set_table);
5550                 item->flags_set_table = NULL;
5551         }
5552         if (item->flags_unset_table) {
5553                 g_hash_table_foreach_remove(item->flags_unset_table, process_flags, GINT_TO_POINTER(FALSE));
5554                 g_hash_table_destroy(item->flags_unset_table);
5555                 item->flags_unset_table = NULL;
5556         }
5557         if (item->tags_set_table) {
5558                 g_hash_table_foreach_remove(item->tags_set_table, process_tags, GINT_TO_POINTER(TRUE));
5559                 g_hash_table_destroy(item->tags_set_table);
5560                 item->tags_set_table = NULL;
5561         }
5562         if (item->tags_unset_table) {
5563                 g_hash_table_foreach_remove(item->tags_unset_table, process_tags, GINT_TO_POINTER(FALSE));
5564                 g_hash_table_destroy(item->tags_unset_table);
5565                 item->tags_unset_table = NULL;
5566         }
5567
5568 }
5569
5570 static void imap_set_batch (Folder *folder, FolderItem *_item, gboolean batch)
5571 {
5572         IMAPFolderItem *item = (IMAPFolderItem *)_item;
5573         IMAPSession *session;
5574
5575         g_return_if_fail(item != NULL);
5576
5577         if (item->batching == batch)
5578                 return;
5579
5580         if (batch) {
5581                 item->batching = TRUE;
5582                 debug_print("IMAP switching to batch mode\n");
5583                 if (!item->flags_set_table) {
5584                         item->flags_set_table = g_hash_table_new(NULL, g_direct_equal);
5585                 }
5586                 if (!item->flags_unset_table) {
5587                         item->flags_unset_table = g_hash_table_new(NULL, g_direct_equal);
5588                 }
5589                 if (!item->tags_set_table) {
5590                         item->tags_set_table = g_hash_table_new(NULL, g_direct_equal);
5591                 }
5592                 if (!item->tags_unset_table) {
5593                         item->tags_unset_table = g_hash_table_new(NULL, g_direct_equal);
5594                 }
5595                 session = imap_session_get(folder);
5596                 if (session) {
5597                         imap_refresh_sensitivity(session);
5598                         session->sens_update_block = TRUE;
5599                 }
5600         } else {
5601                 debug_print("IMAP switching away from batch mode\n");
5602                 /* process stuff */
5603                 process_hashtable(item);
5604                 item->batching = FALSE;
5605                 session = imap_session_get(folder);
5606                 if (session) {
5607                         session->sens_update_block = FALSE;
5608                         imap_refresh_sensitivity(session);
5609                 }
5610         }
5611 }
5612
5613
5614
5615 /* data types conversion libetpan <-> claws */
5616
5617
5618
5619 #define ETPAN_IMAP_MB_MARKED      1
5620 #define ETPAN_IMAP_MB_UNMARKED    2
5621 #define ETPAN_IMAP_MB_NOSELECT    4
5622 #define ETPAN_IMAP_MB_NOINFERIORS 8
5623
5624 static int imap_flags_to_flags(struct mailimap_mbx_list_flags * imap_flags)
5625 {
5626   int flags;
5627   clistiter * cur;
5628
5629   flags = 0;
5630   if (imap_flags->mbf_type == MAILIMAP_MBX_LIST_FLAGS_SFLAG) {
5631     switch (imap_flags->mbf_sflag) {
5632     case MAILIMAP_MBX_LIST_SFLAG_MARKED:
5633       flags |= ETPAN_IMAP_MB_MARKED;
5634       break;
5635     case MAILIMAP_MBX_LIST_SFLAG_NOSELECT:
5636       flags |= ETPAN_IMAP_MB_NOSELECT;
5637       break;
5638     case MAILIMAP_MBX_LIST_SFLAG_UNMARKED:
5639       flags |= ETPAN_IMAP_MB_UNMARKED;
5640       break;
5641     }
5642   }
5643
5644   if (imap_flags->mbf_oflags) {
5645     for(cur = clist_begin(imap_flags->mbf_oflags) ; cur != NULL ;
5646         cur = clist_next(cur)) {
5647       struct mailimap_mbx_list_oflag * oflag;
5648
5649       oflag = clist_content(cur);
5650
5651       switch (oflag->of_type) {
5652       case MAILIMAP_MBX_LIST_OFLAG_NOINFERIORS:
5653         flags |= ETPAN_IMAP_MB_NOINFERIORS;
5654         break;
5655       }
5656     }
5657   }
5658   return flags;
5659 }
5660
5661 static GSList * imap_list_from_lep(IMAPFolder * folder,
5662                                    clist * list, const gchar * real_path, gboolean all)
5663 {
5664         clistiter * iter;
5665         GSList * item_list = NULL, *llast = NULL;
5666
5667         if (list) {
5668                 for(iter = clist_begin(list) ; iter != NULL ;
5669                     iter = clist_next(iter)) {
5670                         struct mailimap_mailbox_list * mb;
5671                         int flags;
5672                         char delimiter;
5673                         char * name;
5674                         char * dup_name;
5675                         gchar * base;
5676                         gchar * loc_name;
5677                         gchar * loc_path;
5678                         FolderItem *new_item;
5679
5680                         mb = clist_content(iter);
5681
5682                         if (mb == NULL)
5683                                 continue;
5684
5685                         flags = 0;
5686                         if (mb->mb_flag != NULL)
5687                                 flags = imap_flags_to_flags(mb->mb_flag);
5688
5689                         delimiter = mb->mb_delimiter;
5690                         name = mb->mb_name;
5691
5692                         dup_name = strdup(name);
5693                         if (delimiter != '\0')
5694                                 subst_char(dup_name, delimiter, '/');
5695
5696                         base = g_path_get_basename(dup_name);
5697                         if (base[0] == '.') {
5698                                 g_free(base);
5699                                 free(dup_name);
5700                                 continue;
5701                         }
5702                         if (!all && path_cmp(name, real_path) == 0) {
5703                                 g_free(base);
5704                                 free(dup_name);
5705                                 continue;
5706                         }
5707
5708                         if (!all && dup_name[strlen(dup_name)-1] == '/') {
5709                                 g_free(base);
5710                                 free(dup_name);
5711                                 continue;
5712                         }
5713
5714                         loc_name = imap_modified_utf7_to_utf8(base, FALSE);
5715                         loc_path = imap_modified_utf7_to_utf8(dup_name, FALSE);
5716
5717                         new_item = folder_item_new(FOLDER(folder), loc_name, loc_path);
5718                         if ((flags & ETPAN_IMAP_MB_NOINFERIORS) != 0)
5719                                 new_item->no_sub = TRUE;
5720                         if (strcasecmp(dup_name, "INBOX") != 0 &&
5721                             ((flags & ETPAN_IMAP_MB_NOSELECT) != 0))
5722                                 new_item->no_select = TRUE;
5723
5724                         if (item_list == NULL)
5725                                 llast = item_list = g_slist_append(item_list, new_item);
5726                         else {
5727                                 llast = g_slist_append(llast, new_item);
5728                                 llast = llast->next;
5729                         }
5730                         debug_print("folder '%s' found.\n", loc_path);
5731                         g_free(base);
5732                         g_free(loc_path);
5733                         g_free(loc_name);
5734
5735                         free(dup_name);
5736                 }
5737         }
5738         return item_list;
5739 }
5740
5741 static GSList * imap_get_lep_set_from_numlist(IMAPFolder *folder, MsgNumberList *numlist)
5742 {
5743         GSList *sorted_list, *cur;
5744         guint first, last, next;
5745         GSList *ret_list = NULL, *llast = NULL;
5746         struct mailimap_set * current_set;
5747         unsigned int item_count;
5748
5749         if (numlist == NULL)
5750                 return NULL;
5751
5752         current_set = mailimap_set_new_empty();
5753
5754         sorted_list = g_slist_copy(numlist);
5755         sorted_list = g_slist_sort(sorted_list, g_int_compare);
5756
5757         first = GPOINTER_TO_INT(sorted_list->data);
5758
5759         item_count = 0;
5760         for (cur = sorted_list; cur != NULL; cur = g_slist_next(cur)) {
5761                 if (GPOINTER_TO_INT(cur->data) == 0)
5762                         continue;
5763
5764                 item_count ++;
5765
5766                 last = GPOINTER_TO_INT(cur->data);
5767                 if (cur->next)
5768                         next = GPOINTER_TO_INT(cur->next->data);
5769                 else
5770                         next = 0;
5771
5772                 if (last + 1 != next || next == 0 || item_count >= folder->max_set_size) {
5773
5774                         struct mailimap_set_item * item;
5775                         item = mailimap_set_item_new(first, last);
5776                         mailimap_set_add(current_set, item);
5777
5778                         first = next;
5779
5780                         if (item_count >= folder->max_set_size) {
5781                                 if (ret_list == NULL)
5782                                         llast = ret_list = g_slist_append(ret_list,
5783                                                           current_set);
5784                                 else {
5785                                         llast = g_slist_append(llast, current_set);
5786                                         llast = llast->next;
5787                                 }
5788
5789                                 current_set = mailimap_set_new_empty();
5790                                 item_count = 0;
5791                         }
5792                 }
5793         }
5794
5795         if (clist_count(current_set->set_list) > 0) {
5796                 ret_list = g_slist_append(ret_list,
5797                                           current_set);
5798         }
5799
5800         g_slist_free(sorted_list);
5801
5802         return ret_list;
5803 }
5804
5805 static GSList * imap_get_lep_set_from_msglist(IMAPFolder *folder, MsgInfoList *msglist)
5806 {
5807         MsgNumberList *numlist = NULL;
5808         GSList *seq_list;
5809
5810         numlist = procmsg_get_number_list_for_msgs(msglist);
5811
5812         seq_list = imap_get_lep_set_from_numlist(folder, numlist);
5813         g_slist_free(numlist);
5814
5815         return seq_list;
5816 }
5817
5818 static GSList * imap_uid_list_from_lep(clist * list, gint* length)
5819 {
5820         clistiter * iter;
5821         GSList * result;
5822         gint len = 0;
5823
5824         result = NULL;
5825
5826         if (list) {
5827                 for(iter = clist_begin(list) ; iter != NULL ;
5828                     iter = clist_next(iter)) {
5829                         uint32_t * puid;
5830
5831                         puid = clist_content(iter);
5832                         result = g_slist_prepend(result, GINT_TO_POINTER(* puid));
5833                         len++;
5834                 }
5835                 result = g_slist_reverse(result);
5836         }
5837         if (length)
5838                 *length = len;
5839         return result;
5840 }
5841
5842 static GSList * imap_uid_list_from_lep_tab(carray * list)
5843 {
5844         unsigned int i;
5845         GSList * result;
5846
5847         result = NULL;
5848
5849         for(i = 0 ; i < carray_count(list) ; i ++) {
5850                 uint32_t * puid;
5851
5852                 puid = carray_get(list, i);
5853                 result = g_slist_prepend(result, GINT_TO_POINTER(* puid));
5854         }
5855         result = g_slist_reverse(result);
5856         return result;
5857 }
5858
5859 static void imap_flags_hash_from_lep_uid_flags_tab(carray * list,
5860                                                    GHashTable * hash,
5861                                                    GHashTable * tags_hash)
5862 {
5863         unsigned int i;
5864
5865         for(i = 0 ; i < carray_count(list) ; i += 3) {
5866                 uint32_t * puid;
5867                 int * pflags;
5868                 GSList *tags;
5869
5870                 puid = carray_get(list, i);
5871                 pflags = carray_get(list, i + 1);
5872                 tags = carray_get(list, i + 2);
5873
5874                 g_hash_table_insert(hash, GINT_TO_POINTER(*puid), GINT_TO_POINTER(* pflags));
5875                 g_hash_table_insert(tags_hash, GINT_TO_POINTER(*puid), tags);
5876         }
5877 }
5878
5879 static MsgInfo *imap_envelope_from_lep(struct imap_fetch_env_info * info,
5880                                        FolderItem *item)
5881 {
5882         MsgInfo *msginfo = NULL;
5883         guint32 uid = 0;
5884         goffset size = 0;
5885         MsgFlags flags = {0, 0};
5886
5887         if (info->headers == NULL)
5888                 return NULL;
5889
5890         MSG_SET_TMP_FLAGS(flags, MSG_IMAP);
5891         if (folder_has_parent_of_type(item, F_QUEUE)) {
5892                 MSG_SET_TMP_FLAGS(flags, MSG_QUEUED);
5893         } else if (folder_has_parent_of_type(item, F_DRAFT)) {
5894                 MSG_SET_TMP_FLAGS(flags, MSG_DRAFT);
5895         }
5896         flags.perm_flags = info->flags;
5897
5898         uid = info->uid;
5899         size = (goffset) info->size;
5900         msginfo = procheader_parse_str(info->headers, flags, FALSE, FALSE);
5901
5902         if (msginfo) {
5903                 msginfo->msgnum = uid;
5904                 msginfo->size = size;
5905         }
5906
5907         return msginfo;
5908 }
5909
5910 static void imap_lep_set_free(GSList *seq_list)
5911 {
5912         GSList * cur;
5913
5914         for(cur = seq_list ; cur != NULL ; cur = g_slist_next(cur)) {
5915                 struct mailimap_set * imapset;
5916
5917                 imapset = cur->data;
5918                 mailimap_set_free(imapset);
5919         }
5920         g_slist_free(seq_list);
5921 }
5922
5923 static struct mailimap_flag_list * imap_flag_to_lep(IMAPFolderItem *item, IMAPFlags flags, GSList *tags)
5924 {
5925         struct mailimap_flag_list * flag_list;
5926         GSList *cur = tags;
5927
5928         flag_list = mailimap_flag_list_new_empty();
5929
5930         if (IMAP_IS_SEEN(flags))
5931                 mailimap_flag_list_add(flag_list,
5932                                        mailimap_flag_new_seen());
5933         if (IMAP_IS_ANSWERED(flags))
5934                 mailimap_flag_list_add(flag_list,
5935                                        mailimap_flag_new_answered());
5936         if (IMAP_IS_FLAGGED(flags))
5937                 mailimap_flag_list_add(flag_list,
5938                                        mailimap_flag_new_flagged());
5939         if (IMAP_IS_DELETED(flags))
5940                 mailimap_flag_list_add(flag_list,
5941                                        mailimap_flag_new_deleted());
5942         if (IMAP_IS_DRAFT(flags))
5943                 mailimap_flag_list_add(flag_list,
5944                                        mailimap_flag_new_draft());
5945         if (IMAP_IS_FORWARDED(flags) && flag_ok(item, IMAP_FLAG_FORWARDED))
5946                 mailimap_flag_list_add(flag_list,
5947                                        mailimap_flag_new_flag_keyword(strdup(RTAG_FORWARDED)));
5948         if (IMAP_IS_SPAM(flags) && flag_ok(item, IMAP_FLAG_SPAM))
5949                 mailimap_flag_list_add(flag_list,
5950                                        mailimap_flag_new_flag_keyword(strdup(RTAG_JUNK)));
5951         else if (IMAP_IS_HAM(flags) && flag_ok(item, IMAP_FLAG_HAM))
5952                 mailimap_flag_list_add(flag_list,
5953                                        mailimap_flag_new_flag_keyword(strdup(RTAG_NON_JUNK)));
5954
5955         for (; cur; cur = cur->next) {
5956                 gchar *enc_str =
5957                         imap_utf8_to_modified_utf7(cur->data, TRUE);
5958                 g_strstrip(enc_str);
5959
5960                 mailimap_flag_list_add(flag_list,
5961                         mailimap_flag_new_flag_keyword(enc_str));
5962         }
5963
5964         return flag_list;
5965 }
5966
5967 guint imap_folder_get_refcnt(Folder *folder)
5968 {
5969         return ((IMAPFolder *)folder)->refcnt;
5970 }
5971
5972 void imap_folder_ref(Folder *folder)
5973 {
5974         ((IMAPFolder *)folder)->refcnt++;
5975 }
5976
5977 void imap_disconnect_all(gboolean have_connectivity)
5978 {
5979         GList *list;
5980         gboolean short_timeout;
5981 #ifdef HAVE_NETWORKMANAGER_SUPPORT
5982         GError *error = NULL;
5983
5984         short_timeout = !networkmanager_is_online(&error);
5985         if(error) {
5986                 short_timeout = TRUE;
5987                 g_error_free(error);
5988         }
5989 #else
5990         short_timeout = TRUE;
5991 #endif
5992
5993         if(short_timeout)
5994                 imap_main_set_timeout(1);
5995
5996         for (list = account_get_list(); list != NULL; list = list->next) {
5997                 PrefsAccount *account = list->data;
5998                 if (account->protocol == A_IMAP4) {
5999                         RemoteFolder *folder = (RemoteFolder *)account->folder;
6000                         if (folder && folder->session) {
6001                                 if (imap_is_busy(FOLDER(folder)))
6002                                         imap_threaded_cancel(FOLDER(folder));
6003
6004                                 IMAPSession *session = (IMAPSession *)folder->session;
6005                                 if (have_connectivity)
6006                                         imap_threaded_disconnect(FOLDER(folder));
6007                                 SESSION(session)->state = SESSION_DISCONNECTED;
6008                                 SESSION(session)->sock = NULL;
6009                                 imap_safe_destroy(session);
6010                                 folder->session = NULL;
6011                         }
6012                 }
6013         }
6014
6015         if(short_timeout)
6016                 imap_main_set_timeout(prefs_common.io_timeout_secs);
6017 }
6018
6019 void imap_folder_unref(Folder *folder)
6020 {
6021         if (((IMAPFolder *)folder)->refcnt > 0)
6022                 ((IMAPFolder *)folder)->refcnt--;
6023 }
6024
6025 void imap_cancel_all(void)
6026 {
6027         GList *folderlist;
6028         GList *cur;
6029
6030         folderlist = folder_get_list();
6031         for (cur = folderlist; cur != NULL; cur = g_list_next(cur)) {
6032                 Folder *folder = (Folder *) cur->data;
6033
6034                 if (folder->klass == &imap_class) {
6035                         if (imap_is_busy(folder)) {
6036                                 IMAPSession *imap_session;
6037                                 RemoteFolder *rfolder;
6038
6039                                 g_printerr("cancelled\n");
6040                                 imap_threaded_cancel(folder);
6041                                 rfolder = (RemoteFolder *) folder;
6042                                 imap_session = (IMAPSession *) rfolder->session;
6043                                 if (imap_session)
6044                                         imap_session->cancelled = 1;
6045                         }
6046                 }
6047         }
6048 }
6049
6050 gboolean imap_cancel_all_enabled(void)
6051 {
6052         GList *folderlist;
6053         GList *cur;
6054
6055         folderlist = folder_get_list();
6056         for (cur = folderlist; cur != NULL; cur = g_list_next(cur)) {
6057                 Folder *folder = (Folder *) cur->data;
6058
6059                 if (folder->klass == &imap_class) {
6060                         if (imap_is_busy(folder)) {
6061                                 return TRUE;
6062                         }
6063                 }
6064         }
6065
6066         return FALSE;
6067 }
6068
6069 static gboolean imap_is_busy(Folder *folder)
6070 {
6071         IMAPSession *imap_session;
6072         RemoteFolder *rfolder;
6073
6074         rfolder = (RemoteFolder *) folder;
6075         imap_session = (IMAPSession *) rfolder->session;
6076         if (imap_session == NULL)
6077                 return FALSE;
6078
6079         return imap_session->busy;
6080 }
6081
6082 #else /* HAVE_LIBETPAN */
6083
6084 static FolderClass imap_class;
6085
6086 static XMLTag *imap_item_get_xml(Folder *folder, FolderItem *item);
6087 static void imap_item_set_xml(Folder *folder, FolderItem *item, XMLTag *tag);
6088
6089 static Folder   *imap_folder_new        (const gchar    *name,
6090                                          const gchar    *path)
6091 {
6092         static gboolean missing_imap_warning = TRUE;
6093         if (missing_imap_warning) {
6094                 missing_imap_warning = FALSE;
6095                 alertpanel_error(
6096                         _("You have one or more IMAP accounts "
6097                           "defined. However this version of "
6098                           "Claws Mail has been built without "
6099                           "IMAP support; your IMAP account(s) are "
6100                           "disabled.\n\n"
6101                           "You probably need to "
6102                           "install libetpan and recompile "
6103                           "Claws Mail."));
6104         }
6105         return NULL;
6106 }
6107 static gint     imap_create_tree        (Folder         *folder)
6108 {
6109         return -1;
6110 }
6111 static FolderItem *imap_create_folder   (Folder         *folder,
6112                                          FolderItem     *parent,
6113                                          const gchar    *name)
6114 {
6115         return NULL;
6116 }
6117 static gint     imap_rename_folder      (Folder         *folder,
6118                                          FolderItem     *item,
6119                                          const gchar    *name)
6120 {
6121         return -1;
6122 }
6123
6124 gchar imap_get_path_separator_for_item(FolderItem *item)
6125 {
6126         return '/';
6127 }
6128
6129 FolderClass *imap_get_class(void)
6130 {
6131         if (imap_class.idstr == NULL) {
6132                 imap_class.type = F_IMAP;
6133                 imap_class.idstr = "imap";
6134                 imap_class.uistr = "IMAP4";
6135
6136                 imap_class.new_folder = imap_folder_new;
6137                 imap_class.create_tree = imap_create_tree;
6138                 imap_class.create_folder = imap_create_folder;
6139                 imap_class.rename_folder = imap_rename_folder;
6140
6141                 imap_class.set_xml = folder_set_xml;
6142                 imap_class.get_xml = folder_get_xml;
6143                 imap_class.item_set_xml = imap_item_set_xml;
6144                 imap_class.item_get_xml = imap_item_get_xml;
6145                 /* nothing implemented */
6146         }
6147
6148         return &imap_class;
6149 }
6150
6151 void imap_disconnect_all(gboolean have_connectivity)
6152 {
6153 }
6154
6155 gint imap_subscribe(Folder *folder, FolderItem *item, gchar *rpath, gboolean sub)
6156 {
6157         return -1;
6158 }
6159
6160 GList * imap_scan_subtree(Folder *folder, FolderItem *item, gboolean unsubs_only, gboolean recursive)
6161 {
6162         return NULL;
6163 }
6164
6165 void imap_cache_msg(FolderItem *item, gint msgnum)
6166 {
6167 }
6168
6169 void imap_cancel_all(void)
6170 {
6171 }
6172
6173 gboolean imap_cancel_all_enabled(void)
6174 {
6175         return FALSE;
6176 }
6177
6178 #endif
6179
6180 #ifdef HAVE_LIBETPAN
6181 static void imap_synchronise(FolderItem *item, gint days)
6182 {
6183         if (IMAP_FOLDER_ITEM(item)->last_sync == IMAP_FOLDER_ITEM(item)->last_change) {
6184                 debug_print("%s already synced\n", item->path?item->path:item->name);
6185                 return;
6186         }
6187         debug_print("syncing %s\n", item->path?item->path:item->name);
6188         imap_gtk_synchronise(item, days);
6189         IMAP_FOLDER_ITEM(item)->last_sync = IMAP_FOLDER_ITEM(item)->last_change;
6190 }
6191 #endif
6192
6193 static void imap_item_set_xml(Folder *folder, FolderItem *item, XMLTag *tag)
6194 {
6195 #ifdef HAVE_LIBETPAN
6196         GList *cur;
6197 #endif
6198         folder_item_set_xml(folder, item, tag);
6199
6200 #ifdef HAVE_LIBETPAN
6201         for (cur = tag->attr; cur != NULL; cur = g_list_next(cur)) {
6202                 XMLAttr *attr = (XMLAttr *) cur->data;
6203
6204                 if (!attr || !attr->name || !attr->value) continue;
6205                 if (!strcmp(attr->name, "uidnext"))
6206                         IMAP_FOLDER_ITEM(item)->uid_next = atoi(attr->value);
6207                 if (!strcmp(attr->name, "last_sync"))
6208                         IMAP_FOLDER_ITEM(item)->last_sync = atoi(attr->value);
6209                 if (!strcmp(attr->name, "last_change"))
6210                         IMAP_FOLDER_ITEM(item)->last_change = atoi(attr->value);
6211         }
6212         if (IMAP_FOLDER_ITEM(item)->last_change == 0)
6213                 IMAP_FOLDER_ITEM(item)->last_change = time(NULL);
6214 #endif
6215 }
6216
6217 static XMLTag *imap_item_get_xml(Folder *folder, FolderItem *item)
6218 {
6219         XMLTag *tag;
6220
6221         tag = folder_item_get_xml(folder, item);
6222
6223 #ifdef HAVE_LIBETPAN
6224         xml_tag_add_attr(tag, xml_attr_new_int("uidnext",
6225                         IMAP_FOLDER_ITEM(item)->uid_next));
6226         xml_tag_add_attr(tag, xml_attr_new_int("last_sync",
6227                         IMAP_FOLDER_ITEM(item)->last_sync));
6228         xml_tag_add_attr(tag, xml_attr_new_int("last_change",
6229                         IMAP_FOLDER_ITEM(item)->last_change));
6230
6231 #endif
6232         return tag;
6233 }
6234
6235 /* ===================================================================
6236  * UTF-7 conversion routines as in RFC 2192
6237  * ===================================================================
6238  * These two functions from:
6239  * libimap library.
6240  * Copyright (C) 2003-2004 Pawel Salek. */
6241
6242 /* UTF7 modified base64 alphabet */
6243 static char base64chars[] =
6244   "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+,";
6245 #define UNDEFINED 64
6246
6247 /* UTF16 definitions */
6248 #define UTF16MASK       0x03FFUL
6249 #define UTF16SHIFT      10
6250 #define UTF16BASE       0x10000UL
6251 #define UTF16HIGHSTART  0xD800UL
6252 #define UTF16HIGHEND    0xDBFFUL
6253 #define UTF16LOSTART    0xDC00UL
6254 #define UTF16LOEND      0xDFFFUL
6255
6256
6257 /* Convert an IMAP mailbox to a UTF-8 string.
6258  *  dst needs to have roughly 4 times the storage space of src
6259  *    Hex encoding can triple the size of the input
6260  *    UTF-7 can be slightly denser than UTF-8
6261  *     (worst case: 8 octets UTF-7 becomes 9 octets UTF-8)
6262  */
6263 char* imap_modified_utf7_to_utf8(const char *mbox, gboolean change_spaces)
6264 {
6265   unsigned c, i, bitcount;
6266   unsigned long ucs4, utf16, bitbuf;
6267   unsigned char base64[256];
6268   const char *src;
6269   char *dst, *res  = g_malloc(2*strlen(mbox)+1);
6270
6271   dst = res;
6272   src = mbox;
6273   if(!dst) return NULL;
6274   /* initialize modified base64 decoding table */
6275   memset(base64, UNDEFINED, sizeof (base64));
6276   for (i = 0; i < sizeof (base64chars); ++i) {
6277     base64[(unsigned)base64chars[i]] = i;
6278   }
6279
6280   /* loop until end of string */
6281   while (*src != '\0') {
6282     c = *src++;
6283     /* deal with literal characters and &- */
6284     if (c != '&' || *src == '-') {
6285       /* encode literally */
6286       if (change_spaces && c == '_')
6287         *dst++ = ' ';
6288       else
6289         *dst++ = c;
6290       /* skip over the '-' if this is an &- sequence */
6291       if (c == '&') ++src;
6292     } else {
6293       /* convert modified UTF-7 -> UTF-16 -> UCS-4 -> UTF-8 -> HEX */
6294       bitbuf = 0;
6295       bitcount = 0;
6296       ucs4 = 0;
6297       while ((c = base64[(unsigned char) *src]) != UNDEFINED) {
6298         ++src;
6299         bitbuf = (bitbuf << 6) | c;
6300         bitcount += 6;
6301         /* enough bits for a UTF-16 character? */
6302         if (bitcount >= 16) {
6303           bitcount -= 16;
6304           utf16 = (bitcount ? bitbuf >> bitcount
6305                    : bitbuf) & 0xffff;
6306           /* convert UTF16 to UCS4 */
6307           if
6308             (utf16 >= UTF16HIGHSTART && utf16 <= UTF16HIGHEND) {
6309             ucs4 = (utf16 - UTF16HIGHSTART) << UTF16SHIFT;
6310             continue;
6311           } else if
6312             (utf16 >= UTF16LOSTART && utf16 <= UTF16LOEND) {
6313             ucs4 += utf16 - UTF16LOSTART + UTF16BASE;
6314           } else {
6315             ucs4 = utf16;
6316           }
6317
6318           /* convert UTF-16 range of UCS4 to UTF-8 */
6319           if (ucs4 <= 0x7fUL) {
6320             dst[0] = ucs4;
6321             dst += 1;
6322           } else if (ucs4 <= 0x7ffUL) {
6323             dst[0] = 0xc0 | (ucs4 >> 6);
6324             dst[1] = 0x80 | (ucs4 & 0x3f);
6325             dst += 2;
6326           } else if (ucs4 <= 0xffffUL) {
6327             dst[0] = 0xe0 | (ucs4 >> 12);
6328             dst[1] = 0x80 | ((ucs4 >> 6) & 0x3f);
6329             dst[2] = 0x80 | (ucs4 & 0x3f);
6330             dst += 3;
6331           } else {
6332             dst[0] = 0xf0 | (ucs4 >> 18);
6333             dst[1] = 0x80 | ((ucs4 >> 12) & 0x3f);
6334             dst[2] = 0x80 | ((ucs4 >> 6) & 0x3f);
6335             dst[3] = 0x80 | (ucs4 & 0x3f);
6336             dst += 4;
6337           }
6338         }
6339       }
6340       /* skip over trailing '-' in modified UTF-7 encoding */
6341       if (*src == '-') ++src;
6342     }
6343   }
6344   /* terminate destination string */
6345   *dst = '\0';
6346   return res;
6347 }
6348
6349 /* Convert hex coded UTF-8 string to modified UTF-7 IMAP mailbox
6350  *  dst should be about twice the length of src to deal with non-hex
6351  *  coded URLs
6352  */
6353 char* imap_utf8_to_modified_utf7(const char *src, gboolean change_spaces)
6354 {
6355   unsigned int utf8pos, utf8total, c, utf7mode, bitstogo, utf16flag;
6356   unsigned long ucs4 = 0, bitbuf = 0;
6357
6358   /* initialize hex lookup table */
6359   char *dst, *res;
6360
6361   if (!src) return NULL;
6362
6363   res = malloc(2*strlen(src)+1);
6364   dst = res;
6365   if(!dst) return NULL;
6366
6367   utf7mode = 0;
6368   utf8total = 0;
6369   bitstogo = 0;
6370   utf8pos = 0;
6371   while ((c = (unsigned char)*src) != '\0') {
6372     ++src;
6373     /* normal character? */
6374     if (c >= ' ' && c <= '~' && (c != '_' || !change_spaces)) {
6375       /* switch out of UTF-7 mode */
6376       if (utf7mode) {
6377         if (bitstogo) {
6378           *dst++ = base64chars[(bitbuf << (6 - bitstogo)) & 0x3F];
6379         }
6380         *dst++ = '-';
6381         utf7mode = 0;
6382         utf8pos  = 0;
6383         bitstogo = 0;
6384         utf8total= 0;
6385       }
6386       if (change_spaces && c == ' ')
6387         *dst++ = '_';
6388       else
6389         *dst++ = c;
6390       /* encode '&' as '&-' */
6391       if (c == '&') {
6392         *dst++ = '-';
6393       }
6394       continue;
6395     }
6396     /* switch to UTF-7 mode */
6397     if (!utf7mode) {
6398       *dst++ = '&';
6399       utf7mode = 1;
6400     }
6401     /* Encode US-ASCII characters as themselves */
6402     if (c < 0x80) {
6403       ucs4 = c;
6404     } else if (utf8total) {
6405       /* save UTF8 bits into UCS4 */
6406       ucs4 = (ucs4 << 6) | (c & 0x3FUL);
6407       if (++utf8pos < utf8total) {
6408         continue;
6409       }
6410     } else {
6411       utf8pos = 1;
6412       if (c < 0xE0) {
6413         utf8total = 2;
6414         ucs4 = c & 0x1F;
6415       } else if (c < 0xF0) {
6416         utf8total = 3;
6417         ucs4 = c & 0x0F;
6418       } else {
6419         /* NOTE: can't convert UTF8 sequences longer than 4 */
6420         utf8total = 4;
6421         ucs4 = c & 0x03;
6422       }
6423       continue;
6424     }
6425     /* loop to split ucs4 into two utf16 chars if necessary */
6426     utf8total = 0;
6427     do {
6428       if (ucs4 >= UTF16BASE) {
6429         ucs4 -= UTF16BASE;
6430         bitbuf = (bitbuf << 16) | ((ucs4 >> UTF16SHIFT)
6431                                    + UTF16HIGHSTART);
6432         ucs4 = (ucs4 & UTF16MASK) + UTF16LOSTART;
6433         utf16flag = 1;
6434       } else {
6435         bitbuf = (bitbuf << 16) | ucs4;
6436         utf16flag = 0;
6437       }
6438       bitstogo += 16;
6439       /* spew out base64 */
6440       while (bitstogo >= 6) {
6441         bitstogo -= 6;
6442         *dst++ = base64chars[(bitstogo ? (bitbuf >> bitstogo)
6443                               : bitbuf)
6444                              & 0x3F];
6445       }
6446     } while (utf16flag);
6447   }
6448   /* if in UTF-7 mode, finish in ASCII */
6449   if (utf7mode) {
6450     if (bitstogo) {
6451       *dst++ = base64chars[(bitbuf << (6 - bitstogo)) & 0x3F];
6452     }
6453     *dst++ = '-';
6454   }
6455   /* tie off string */
6456   *dst = '\0';
6457   return res;
6458 }