src/imap.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2012 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 "base64.h"
  63 #include "utils.h"
  64 #include "prefs_common.h"
  65 #include "inputdialog.h"
  66 #include "log.h"
  67 #include "remotefolder.h"
  68 #include "claws.h"
  69 #include "statusbar.h"
  70 #include "msgcache.h"
  71 #include "imap-thread.h"
  72 #include "account.h"
  73 #include "tags.h"
  74 #include "main.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, _("IMAP error on %s: authenticated\n"), session_server);
 623                 break;
 624         case MAILIMAP_NO_ERROR_NON_AUTHENTICATED:
 625                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: not authenticated\n"), session_server);
 626                 break;
 627         case MAILIMAP_ERROR_BAD_STATE:
 628                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: bad state\n"), session_server);
 629                 break;
 630         case MAILIMAP_ERROR_STREAM:
 631                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: stream error\n"), session_server);
 632                 break;
 633         case MAILIMAP_ERROR_PARSE:
 634                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: parse error "
 635                                             "(very probably non-RFC compliance from the server)\n"), session_server);
 636                 break;
 637         case MAILIMAP_ERROR_CONNECTION_REFUSED:
 638                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: connection refused\n"), session_server);
 639                 break;
 640         case MAILIMAP_ERROR_MEMORY:
 641                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: memory error\n"), session_server);
 642                 break;
 643         case MAILIMAP_ERROR_FATAL:
 644                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: fatal error\n"), session_server);
 645                 break;
 646         case MAILIMAP_ERROR_PROTOCOL:
 647                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: protocol error"
 648                                             "(very probably non-RFC compliance from the server)\n"), session_server);
 649                 break;
 650         case MAILIMAP_ERROR_DONT_ACCEPT_CONNECTION:
 651                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: connection not accepted\n"), session_server);
 652                 break;
 653         case MAILIMAP_ERROR_APPEND:
 654                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: APPEND error\n"), session_server);
 655                 break;
 656         case MAILIMAP_ERROR_NOOP:
 657                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: NOOP error\n"), session_server);
 658                 break;
 659         case MAILIMAP_ERROR_LOGOUT:
 660                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: LOGOUT error\n"), session_server);
 661                 break;
 662         case MAILIMAP_ERROR_CAPABILITY:
 663                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: CAPABILITY error\n"), session_server);
 664                 break;
 665         case MAILIMAP_ERROR_CHECK:
 666                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: CHECK error\n"), session_server);
 667                 break;
 668         case MAILIMAP_ERROR_CLOSE:
 669                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: CLOSE error\n"), session_server);
 670                 break;
 671         case MAILIMAP_ERROR_EXPUNGE:
 672                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: EXPUNGE error\n"), session_server);
 673                 break;
 674         case MAILIMAP_ERROR_COPY:
 675                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: COPY error\n"), session_server);
 676                 break;
 677         case MAILIMAP_ERROR_UID_COPY:
 678                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: UID COPY error\n"), session_server);
 679                 break;
 680         case MAILIMAP_ERROR_CREATE:
 681                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: CREATE error\n"), session_server);
 682                 break;
 683         case MAILIMAP_ERROR_DELETE:
 684                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: DELETE error\n"), session_server);
 685                 break;
 686         case MAILIMAP_ERROR_EXAMINE:
 687                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: EXAMINE error\n"), session_server);
 688                 break;
 689         case MAILIMAP_ERROR_FETCH:
 690                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: FETCH error\n"), session_server);
 691                 break;
 692         case MAILIMAP_ERROR_UID_FETCH:
 693                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: UID FETCH error\n"), session_server);
 694                 break;
 695         case MAILIMAP_ERROR_LIST:
 696                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: LIST error\n"), session_server);
 697                 break;
 698         case MAILIMAP_ERROR_LOGIN:
 699                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: LOGIN error\n"), session_server);
 700                 break;
 701         case MAILIMAP_ERROR_LSUB:
 702                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: LSUB error\n"), session_server);
 703                 break;
 704         case MAILIMAP_ERROR_RENAME:
 705                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: RENAME error\n"), session_server);
 706                 break;
 707         case MAILIMAP_ERROR_SEARCH:
 708                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: SEARCH error\n"), session_server);
 709                 break;
 710         case MAILIMAP_ERROR_UID_SEARCH:
 711                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: UID SEARCH error\n"), session_server);
 712                 break;
 713         case MAILIMAP_ERROR_SELECT:
 714                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: SELECT error\n"), session_server);
 715                 break;
 716         case MAILIMAP_ERROR_STATUS:
 717                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: STATUS error\n"), session_server);
 718                 break;
 719         case MAILIMAP_ERROR_STORE:
 720                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: STORE error\n"), session_server);
 721                 break;
 722         case MAILIMAP_ERROR_UID_STORE:
 723                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: UID STORE error\n"), session_server);
 724                 break;
 725         case MAILIMAP_ERROR_SUBSCRIBE:
 726                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: SUBSCRIBE error\n"), session_server);
 727                 break;
 728         case MAILIMAP_ERROR_UNSUBSCRIBE:
 729                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: UNSUBSCRIBE error\n"), session_server);
 730                 break;
 731         case MAILIMAP_ERROR_STARTTLS:
 732                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: STARTTLS error\n"), session_server);
 733                 break;
 734         case MAILIMAP_ERROR_INVAL:
 735                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: INVAL error\n"), session_server);
 736                 break;
 737         case MAILIMAP_ERROR_EXTENSION:
 738                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: EXTENSION error\n"), session_server);
 739                 break;
 740         case MAILIMAP_ERROR_SASL:
 741                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: SASL error\n"), session_server);
 742                 break;
 743 #ifdef USE_GNUTLS
 744         case MAILIMAP_ERROR_SSL:
 745                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: SSL error\n"), session_server);
 746                 break;
 747 #endif
 748         default:
 749                 log_warning(LOG_PROTOCOL, _("IMAP error on %s: Unknown error [%d]\n"),
 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 = -1;
 840
 841         if (session->capability != NULL)
 842                 return MAILIMAP_NO_ERROR;
 843
 844         capabilities = imap_threaded_capability(session->folder, &result);
 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_LOGIN:
 903                 ok = imap_cmd_login(session, user, pass, "LOGIN");
 904                 break;
 905         case IMAP_AUTH_GSSAPI:
 906                 ok = imap_cmd_login(session, user, pass, "GSSAPI");
 907                 break;
 908         default:
 909                 debug_print("capabilities:\n"
 910                                 "\t ANONYMOUS %d\n"
 911                                 "\t CRAM-MD5 %d\n"
 912                                 "\t DIGEST-MD5 %d\n"
 913                                 "\t LOGIN %d\n"
 914                                 "\t GSSAPI %d\n",
 915                         imap_has_capability(session, "ANONYMOUS"),
 916                         imap_has_capability(session, "CRAM-MD5"),
 917                         imap_has_capability(session, "DIGEST-MD5"),
 918                         imap_has_capability(session, "LOGIN"),
 919                         imap_has_capability(session, "GSSAPI"));
 920                 if (imap_has_capability(session, "CRAM-MD5"))
 921                         ok = imap_cmd_login(session, user, pass, "CRAM-MD5");
 922                 if (ok == MAILIMAP_ERROR_LOGIN && imap_has_capability(session, "DIGEST-MD5"))
 923                         ok = imap_cmd_login(session, user, pass, "DIGEST-MD5");
 924                 if (ok == MAILIMAP_ERROR_LOGIN && imap_has_capability(session, "GSSAPI"))
 925                         ok = imap_cmd_login(session, user, pass, "GSSAPI");
 926                 if (ok == MAILIMAP_ERROR_LOGIN) /* we always try LOGIN before giving up */
 927                         ok = imap_cmd_login(session, user, pass, "LOGIN");
 928         }
 929
 930         if (ok == MAILIMAP_NO_ERROR)
 931                 session->authenticated = TRUE;
 932         else {
 933                 if (type == IMAP_AUTH_CRAM_MD5) {
 934                         ext_info = _("\n\nCRAM-MD5 logins only work if libetpan has been "
 935                                      "compiled with SASL support and the "
 936                                      "CRAM-MD5 SASL plugin is installed.");
 937                 }
 938
 939                 if (type == IMAP_AUTH_DIGEST_MD5) {
 940                         ext_info = _("\n\nDIGEST-MD5 logins only work if libetpan has been "
 941                                      "compiled with SASL support and the "
 942                                      "DIGEST-MD5 SASL plugin is installed.");
 943                 }
 944
 945                 if (time(NULL) - last_login_err > 10) {
 946                         if (!prefs_common.no_recv_err_panel) {
 947                                 alertpanel_error_log(_("Connection to %s failed: "
 948                                         "login refused.%s"),
 949                                         server, ext_info);
 950                         } else {
 951                                 log_error(LOG_PROTOCOL, _("Connection to %s failed: "
 952                                         "login refused.%s\n"),
 953                                         server, ext_info);
 954                         }
 955                 }
 956                 last_login_err = time(NULL);
 957         }
 958         g_free(server);
 959         return ok;
 960 }
 961
 962 static IMAPSession *imap_reconnect_if_possible(Folder *folder, IMAPSession *session)
 963 {
 964         RemoteFolder *rfolder = REMOTE_FOLDER(folder);
 965         /* Check if this is the first try to establish a
 966            connection, if yes we don't try to reconnect */
 967         debug_print("reconnecting\n");
 968         if (rfolder->session == NULL) {
 969                 log_warning(LOG_PROTOCOL, _("Connecting to %s failed"),
 970                             folder->account->recv_server);
 971                 SESSION(session)->sock = NULL;
 972                 imap_safe_destroy(session);
 973                 session = NULL;
 974         } else {
 975                 rfolder->session = NULL;
 976                 log_warning(LOG_PROTOCOL, _("IMAP4 connection to %s has been"
 977                             " disconnected. Reconnecting...\n"),
 978                             folder->account->recv_server);
 979                 statusbar_print_all(_("IMAP4 connection to %s has been"
 980                             " disconnected. Reconnecting...\n"),
 981                             folder->account->recv_server);
 982                 SESSION(session)->state = SESSION_DISCONNECTED;
 983                 SESSION(session)->sock = NULL;
 984                 imap_safe_destroy(session);
 985                 /* Clear folders session to make imap_session_get create
 986                    a new session, because of rfolder->session == NULL
 987                    it will not try to reconnect again and so avoid an
 988                    endless loop */
 989                 debug_print("getting session...\n");
 990                 session = imap_session_get(folder);
 991                 rfolder->session = SESSION(session);
 992                 statusbar_pop_all();
 993         }
 994         return session;
 995 }
 996
 997 static IMAPSession *imap_session_get(Folder *folder)
 998 {
 999         RemoteFolder *rfolder = REMOTE_FOLDER(folder);
1000         IMAPSession *session = NULL;
1001         gint r = MAILIMAP_NO_ERROR;
1002
1003         g_return_val_if_fail(folder != NULL, NULL);
1004         g_return_val_if_fail(FOLDER_CLASS(folder) == &imap_class, NULL);
1005         g_return_val_if_fail(folder->account != NULL, NULL);
1006
1007         if (prefs_common.work_offline &&
1008             !inc_offline_should_override(FALSE,
1009                 _("Claws Mail needs network access in order "
1010                   "to access the IMAP server."))) {
1011                 return NULL;
1012         }
1013
1014         /* check for deferred destroy */
1015         if (rfolder->session != NULL) {
1016                 session = IMAP_SESSION(rfolder->session);
1017                 if (!session->busy && session->do_destroy) {
1018                         rfolder->session = NULL;
1019                         imap_safe_destroy(session);
1020                         session = NULL;
1021                 }
1022         }
1023
1024         /* Make sure we have a session */
1025         if (rfolder->session != NULL && rfolder->session->state != SESSION_DISCONNECTED) {
1026                 session = IMAP_SESSION(rfolder->session);
1027         } else if (rfolder->session != NULL && rfolder->session->state == SESSION_DISCONNECTED) {
1028                 imap_safe_destroy(IMAP_SESSION(rfolder->session));
1029                 rfolder->session = NULL;
1030                 goto new_conn;
1031         } else if (rfolder->connecting) {
1032                 debug_print("already connecting\n");
1033                 return NULL;
1034         } else {
1035 new_conn:
1036                 imap_reset_uid_lists(folder);
1037                 if (time(NULL) - rfolder->last_failure <= 2)
1038                         return NULL;
1039                 rfolder->connecting = TRUE;
1040                 session = imap_session_new(folder, folder->account);
1041         }
1042         if(session == NULL) {
1043                 rfolder->last_failure = time(NULL);
1044                 rfolder->connecting = FALSE;
1045                 return NULL;
1046         }
1047
1048         /* Make sure session is authenticated */
1049         if (!IMAP_SESSION(session)->authenticated)
1050                 r = imap_session_authenticate(IMAP_SESSION(session), folder->account);
1051
1052         if (r != MAILIMAP_NO_ERROR || (!is_fatal(r) && !IMAP_SESSION(session)->authenticated)) {
1053                 rfolder->session = NULL;
1054                 if (!is_fatal(r)) {
1055                         imap_threaded_disconnect(session->folder);
1056                 }
1057                 SESSION(session)->state = SESSION_DISCONNECTED;
1058                 SESSION(session)->sock = NULL;
1059                 imap_safe_destroy(session);
1060                 rfolder->last_failure = time(NULL);
1061                 rfolder->connecting = FALSE;
1062                 return NULL;
1063         }
1064
1065         /* I think the point of this code is to avoid sending a
1066          * keepalive if we've used the session recently and therefore
1067          * think it's still alive.  Unfortunately, most of the code
1068          * does not yet check for errors on the socket, and so if the
1069          * connection drops we don't notice until the timeout expires.
1070          * A better solution than sending a NOOP every time would be
1071          * for every command to be prepared to retry until it is
1072          * successfully sent. -- mbp */
1073         if ((time(NULL) - SESSION(session)->last_access_time > SESSION_TIMEOUT_INTERVAL) || session->cancelled) {
1074                 /* verify that the session is still alive */
1075                 r = imap_cmd_noop(session);
1076
1077                 if (r != MAILIMAP_NO_ERROR) {
1078                         debug_print("disconnected!\n");
1079                         if (!is_fatal(r))
1080                                 session = imap_reconnect_if_possible(folder, session);
1081                         else {
1082                                 rfolder->session = NULL;
1083                                 rfolder->connecting = FALSE;
1084                                 SESSION(session)->state = SESSION_DISCONNECTED;
1085                                 SESSION(session)->sock = NULL;
1086                                 imap_safe_destroy(session);
1087                                 session = imap_session_get(folder);
1088                         }
1089                 }
1090                 if (session)
1091                         session->cancelled = FALSE;
1092         }
1093
1094         rfolder->session = SESSION(session);
1095         rfolder->connecting = FALSE;
1096
1097         return IMAP_SESSION(session);
1098 }
1099
1100 static IMAPSession *imap_session_new(Folder * folder,
1101                                      const PrefsAccount *account)
1102 {
1103         IMAPSession *session;
1104         gushort port;
1105         int r;
1106         int authenticated = FALSE;
1107         gchar *buf;
1108
1109 #ifdef USE_GNUTLS
1110         /* FIXME: IMAP over SSL only... */
1111         SSLType ssl_type;
1112
1113         port = account->set_imapport ? account->imapport
1114                 : account->ssl_imap == SSL_TUNNEL ? IMAPS_PORT : IMAP4_PORT;
1115         ssl_type = account->ssl_imap;
1116 #else
1117         if (account->ssl_imap != SSL_NONE) {
1118                 if (alertpanel_full(_("Insecure connection"),
1119                         _("This connection is configured to be secured "
1120                           "using SSL, but SSL is not available in this "
1121                           "build of Claws Mail. \n\n"
1122                           "Do you want to continue connecting to this "
1123                           "server? The communication would not be "
1124                           "secure."),
1125                           GTK_STOCK_CANCEL, _("Con_tinue connecting"),
1126                           NULL, FALSE, NULL, ALERT_WARNING,
1127                           G_ALERTDEFAULT) != G_ALERTALTERNATE)
1128                         return NULL;
1129         }
1130         port = account->set_imapport ? account->imapport
1131                 : IMAP4_PORT;
1132 #endif
1133
1134         imap_init(folder);
1135         buf = g_strdup_printf(_("Account '%s': Connecting to IMAP4 server: %s:%d..."),
1136                                 folder->account->account_name, folder->account->recv_server,
1137                                 port);
1138         statuswindow_print_all("%s", buf);
1139         log_message(LOG_PROTOCOL, "%s\n", buf);
1140         g_free(buf);
1141
1142 #ifndef G_OS_WIN32
1143         if (account->set_tunnelcmd) {
1144                 r = imap_threaded_connect_cmd(folder,
1145                                               account->tunnelcmd,
1146                                               account->recv_server,
1147                                               port);
1148         }
1149         else
1150 #endif
1151         {
1152 #ifdef USE_GNUTLS
1153                 if (ssl_type == SSL_TUNNEL) {
1154                         r = imap_threaded_connect_ssl(folder,
1155                                                       account->recv_server,
1156                                                       port);
1157                 }
1158                 else
1159 #endif
1160                 {
1161                         r = imap_threaded_connect(folder,
1162                                                   account->recv_server,
1163                                                   port);
1164                 }
1165         }
1166
1167         statuswindow_pop_all();
1168         if (r == MAILIMAP_NO_ERROR_AUTHENTICATED) {
1169                 authenticated = TRUE;
1170         }
1171         else if (r == MAILIMAP_NO_ERROR_NON_AUTHENTICATED) {
1172                 authenticated = FALSE;
1173         }
1174         else {
1175 #ifdef USE_GNUTLS
1176                 if (r == MAILIMAP_ERROR_SSL)
1177                         log_error(LOG_PROTOCOL, _("SSL handshake failed\n"));
1178                 else
1179 #endif
1180                         imap_handle_error(NULL, account->recv_server, r);
1181
1182                 if(!prefs_common.no_recv_err_panel) {
1183                         alertpanel_error_log(_("Can't connect to IMAP4 server: %s:%d"),
1184                                          account->recv_server, port);
1185                 } else {
1186                         log_error(LOG_PROTOCOL, _("Can't connect to IMAP4 server: %s:%d\n"),
1187                                          account->recv_server, port);
1188                 }
1189
1190                 return NULL;
1191         }
1192
1193         session = g_new0(IMAPSession, 1);
1194         session_init(SESSION(session), account, FALSE);
1195         SESSION(session)->type             = SESSION_IMAP;
1196         SESSION(session)->server           = g_strdup(account->recv_server);
1197         SESSION(session)->port             = port;
1198         SESSION(session)->sock             = NULL;
1199
1200         SESSION(session)->destroy          = imap_session_destroy;
1201
1202         session->capability = NULL;
1203
1204         session->authenticated = authenticated;
1205         session->mbox = NULL;
1206         session->exists = 0;
1207         session->recent = 0;
1208         session->expunge = 0;
1209         session->cmd_count = 0;
1210         session->folder = folder;
1211         IMAP_FOLDER(session->folder)->last_seen_separator = 0;
1212
1213 #ifdef USE_GNUTLS
1214         if (account->ssl_imap == SSL_STARTTLS) {
1215                 gint ok;
1216
1217                 ok = imap_cmd_starttls(session);
1218                 if (ok != MAILIMAP_NO_ERROR) {
1219                         log_warning(LOG_PROTOCOL, _("Can't start TLS session.\n"));
1220                         if (!is_fatal(ok)) {
1221                                 SESSION(session)->sock = NULL;
1222                                 imap_safe_destroy(session);
1223                         }
1224                         return NULL;
1225                 }
1226
1227                 imap_free_capabilities(session);
1228                 session->authenticated = FALSE;
1229                 session->uidplus = FALSE;
1230                 session->cmd_count = 1;
1231         }
1232 #endif
1233         log_message(LOG_PROTOCOL, "IMAP connection is %s-authenticated\n",
1234                     (session->authenticated) ? "pre" : "un");
1235
1236         session_register_ping(SESSION(session), imap_ping);
1237
1238         return session;
1239 }
1240
1241 static gint imap_session_authenticate(IMAPSession *session,
1242                                       PrefsAccount *account)
1243 {
1244         gchar *pass, *acc_pass;
1245         gboolean failed = FALSE;
1246         gint ok = MAILIMAP_NO_ERROR;
1247         g_return_val_if_fail(account->userid != NULL, MAILIMAP_ERROR_BAD_STATE);
1248
1249         if (password_get(account->userid, account->recv_server, "imap",
1250                          SESSION(session)->port, &pass)) {
1251                 Xstrdup_a(acc_pass, pass, {g_free(pass); return MAILIMAP_NO_ERROR;});
1252                 g_free(pass);
1253         } else {
1254                 acc_pass = account->passwd;
1255         }
1256 try_again:
1257         pass = acc_pass;
1258         if (!pass && account->imap_auth_type != IMAP_AUTH_ANON && account->imap_auth_type != IMAP_AUTH_GSSAPI) {
1259                 gchar *tmp_pass;
1260                 tmp_pass = input_dialog_query_password_keep(account->recv_server,
1261                                                             account->userid,
1262                                                             &(account->session_passwd));
1263                 if (!tmp_pass)
1264                         return MAILIMAP_NO_ERROR;
1265                 Xstrdup_a(pass, tmp_pass, {g_free(tmp_pass); return MAILIMAP_NO_ERROR;});
1266                 g_free(tmp_pass);
1267         } else if (account->imap_auth_type == IMAP_AUTH_ANON || account->imap_auth_type == IMAP_AUTH_GSSAPI) {
1268                 pass = "";
1269         }
1270         if ((ok = imap_auth(session, account->userid, pass, account->imap_auth_type)) != MAILIMAP_NO_ERROR) {
1271
1272                 if (!failed && !is_fatal(ok)) {
1273                         acc_pass = NULL;
1274                         failed = TRUE;
1275                         if (account->session_passwd != NULL) {
1276                                 g_free(account->session_passwd);
1277                                 account->session_passwd = NULL;
1278                         }
1279                         goto try_again;
1280                 } else {
1281                         if (prefs_common.no_recv_err_panel) {
1282                                 log_error(LOG_PROTOCOL, _("Couldn't login to IMAP server %s.\n"), account->recv_server);
1283                                 mainwindow_show_error();
1284                         } else
1285                                 alertpanel_error_log(_("Couldn't login to IMAP server %s."), account->recv_server);
1286                 }
1287
1288                 return ok;
1289         }
1290
1291         statuswindow_pop_all();
1292         session->authenticated = TRUE;
1293         return MAILIMAP_NO_ERROR;
1294 }
1295
1296 static void imap_session_destroy(Session *session)
1297 {
1298         if (session->state != SESSION_DISCONNECTED)
1299                 imap_threaded_disconnect(IMAP_SESSION(session)->folder);
1300
1301         imap_free_capabilities(IMAP_SESSION(session));
1302         g_free(IMAP_SESSION(session)->mbox);
1303 }
1304
1305 static gchar *imap_fetch_msg(Folder *folder, FolderItem *item, gint uid)
1306 {
1307         return imap_fetch_msg_full(folder, item, uid, TRUE, TRUE);
1308 }
1309
1310 static guint get_file_size_with_crs(const gchar *filename)
1311 {
1312         FILE *fp = NULL;
1313         guint cnt = 0;
1314         gchar buf[4096];
1315
1316         if (filename == NULL)
1317                 return -1;
1318
1319         fp = g_fopen(filename, "rb");
1320         if (!fp)
1321                 return -1;
1322
1323         while (fgets(buf, sizeof (buf), fp) != NULL) {
1324                 cnt += strlen(buf);
1325                 if (!strstr(buf, "\r\n") && strstr(buf, "\n"))
1326                         cnt++;
1327         }
1328
1329         fclose(fp);
1330         return cnt;
1331 }
1332
1333 static gchar *imap_get_cached_filename(FolderItem *item, guint msgnum)
1334 {
1335         gchar *path, *filename;
1336
1337         cm_return_val_if_fail(item != NULL, NULL);
1338
1339         path = folder_item_get_path(item);
1340
1341         if (!is_dir_exist(path)) {
1342                 g_free(path);
1343                 return NULL;
1344         }
1345
1346         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(msgnum), NULL);
1347
1348         if (is_dir_exist(filename)) {
1349                 g_free(filename);
1350                 filename = g_strconcat(path, G_DIR_SEPARATOR_S, ".", itos(msgnum), NULL);
1351         }
1352         g_free(path);
1353
1354         return filename;
1355 }
1356
1357 static void imap_remove_cached_msg(Folder *folder, FolderItem *item, MsgInfo *msginfo)
1358 {
1359         gchar *filename;
1360
1361         filename = imap_get_cached_filename(item, msginfo->msgnum);
1362
1363         cm_return_if_fail(filename != NULL);
1364
1365         if (is_file_exist(filename)) {
1366                 claws_unlink(filename);
1367         }
1368         g_free(filename);
1369 }
1370
1371 typedef struct _TagsData {
1372         gchar *str;
1373         GSList *msglist;
1374         IMAPFolderItem *item;
1375 } TagsData;
1376
1377 static void imap_commit_tags(FolderItem *item, MsgInfo *msginfo, GSList *tags_set, GSList *tags_unset)
1378 {
1379         IMAPSession *session;
1380         gint ok, can_create_tags;
1381         Folder *folder = NULL;
1382         TagsData *ht_data = NULL;
1383         GSList *cur;
1384
1385         g_return_if_fail(item != NULL);
1386         g_return_if_fail(msginfo != NULL);
1387
1388         folder = item->folder;
1389         debug_print("getting session...\n");
1390         session = imap_session_get(folder);
1391
1392         if (!session) {
1393                 debug_print("can't get session\n");
1394                 return;
1395         }
1396
1397         ok = imap_select(session, IMAP_FOLDER(folder), item,
1398                          NULL, NULL, NULL, NULL, &can_create_tags, FALSE);
1399
1400         if (ok != MAILIMAP_NO_ERROR) {
1401                 return;
1402         }
1403
1404
1405         if (IMAP_FOLDER_ITEM(item)->can_create_flags != ITEM_CAN_CREATE_FLAGS)
1406                 return;
1407
1408         if (IMAP_FOLDER_ITEM(item)->batching) {
1409                 /* instead of performing an UID STORE command for each message change,
1410                  * as a lot of them can change "together", we just fill in hashtables
1411                  * and defer the treatment so that we're able to send only one
1412                  * command.
1413                  */
1414                 debug_print("IMAP batch mode on, deferring tags change\n");
1415                 for (cur = tags_set; cur; cur = cur->next) {
1416                         gint cur_tag = GPOINTER_TO_INT(cur->data);
1417                         if (cur_tag) {
1418                                 ht_data = g_hash_table_lookup(IMAP_FOLDER_ITEM(item)->tags_set_table,
1419                                         GINT_TO_POINTER(cur_tag));
1420                                 if (ht_data == NULL) {
1421                                         ht_data = g_new0(TagsData, 1);
1422                                         ht_data->str = g_strdup(tags_get_tag(cur_tag));
1423                                         ht_data->item = IMAP_FOLDER_ITEM(item);
1424                                         g_hash_table_insert(IMAP_FOLDER_ITEM(item)->tags_set_table,
1425                                                 GINT_TO_POINTER(cur_tag), ht_data);
1426                                 }
1427                                 ht_data->msglist = g_slist_prepend(ht_data->msglist, GINT_TO_POINTER(msginfo->msgnum));
1428                         }
1429                 }
1430                 for (cur = tags_unset; cur; cur = cur->next) {
1431                         gint cur_tag = GPOINTER_TO_INT(cur->data);
1432                         if (cur_tag) {
1433                                 ht_data = g_hash_table_lookup(IMAP_FOLDER_ITEM(item)->tags_unset_table,
1434                                         GINT_TO_POINTER(cur_tag));
1435                                 if (ht_data == NULL) {
1436                                         ht_data = g_new0(TagsData, 1);
1437                                         ht_data->str = g_strdup(tags_get_tag(cur_tag));
1438                                         ht_data->item = IMAP_FOLDER_ITEM(item);
1439                                         g_hash_table_insert(IMAP_FOLDER_ITEM(item)->tags_unset_table,
1440                                                 GINT_TO_POINTER(cur_tag), ht_data);
1441                                 }
1442                                 ht_data->msglist = g_slist_prepend(ht_data->msglist, GINT_TO_POINTER(msginfo->msgnum));
1443                         }
1444                 }
1445         } else {
1446                 GSList *list_set = NULL;
1447                 GSList *list_unset = NULL;
1448                 GSList numlist;
1449
1450                 numlist.data = GINT_TO_POINTER(msginfo->msgnum);
1451                 numlist.next = NULL;
1452
1453                 debug_print("IMAP changing tags NOW\n");
1454                 for (cur = tags_set; cur; cur = cur->next) {
1455                         gint cur_tag = GPOINTER_TO_INT(cur->data);
1456                         const gchar *str = tags_get_tag(cur_tag);
1457                         if (IS_NOT_RESERVED_TAG(str))
1458                                 list_set = g_slist_prepend(list_set, g_strdup(str));
1459                 }
1460                 if (list_set) {
1461                         ok = imap_set_message_flags(session,
1462                                 IMAP_FOLDER_ITEM(item), &numlist, 0, list_set, TRUE);
1463                         slist_free_strings_full(list_set);
1464                         if (ok != MAILIMAP_NO_ERROR) {
1465                                 return;
1466                         }
1467                 }
1468
1469                 for (cur = tags_unset; cur; cur = cur->next) {
1470                         gint cur_tag = GPOINTER_TO_INT(cur->data);
1471                         const gchar *str = tags_get_tag(cur_tag);
1472                         if (IS_NOT_RESERVED_TAG(str))
1473                                 list_unset = g_slist_prepend(list_unset, g_strdup(str));
1474                 }
1475                 if (list_unset) {
1476                         ok = imap_set_message_flags(session,
1477                                 IMAP_FOLDER_ITEM(item), &numlist, 0, list_unset, FALSE);
1478                         slist_free_strings_full(list_unset);
1479                         if (ok != MAILIMAP_NO_ERROR) {
1480                                 return;
1481                         }
1482                 }
1483         }
1484 }
1485
1486 static gchar *imap_fetch_msg_full(Folder *folder, FolderItem *item, gint uid,
1487                                   gboolean headers, gboolean body)
1488 {
1489         gchar *path, *filename;
1490         IMAPSession *session;
1491         gint ok;
1492
1493         g_return_val_if_fail(folder != NULL, NULL);
1494         g_return_val_if_fail(item != NULL, NULL);
1495
1496         if (uid == 0)
1497                 return NULL;
1498
1499         path = folder_item_get_path(item);
1500         if (!is_dir_exist(path)) {
1501                 if(is_file_exist(path))
1502                         claws_unlink(path);
1503                 make_dir_hier(path);
1504         }
1505         g_free(path);
1506
1507         filename = imap_get_cached_filename(item, uid);
1508         debug_print("trying to fetch cached %s\n", filename);
1509
1510         if (is_file_exist(filename)) {
1511                 /* see whether the local file represents the whole message
1512                  * or not. As the IMAP server reports size with \r chars,
1513                  * we have to update the local file (UNIX \n only) size */
1514                 MsgInfo *cached = msgcache_get_msg(item->cache,uid);
1515                 guint have_size = -1;
1516
1517                 if (cached)
1518                         debug_print("message %d has been already %scached.\n", uid,
1519                                 MSG_IS_FULLY_CACHED(cached->flags) ? "fully ":"");
1520
1521                 if (!cached || !MSG_IS_FULLY_CACHED(cached->flags)) {
1522                         have_size = get_file_size_with_crs(filename);
1523                         if (cached && (cached->size <= have_size || !body)) {
1524                                 ok = file_strip_crs(filename);
1525                                 if (ok == 0 && cached && cached->size <= have_size) {
1526                                         /* we have it all and stripped */
1527                                         debug_print("...fully cached in fact (%u/%zd); setting flag.\n",
1528                                                         have_size, cached->size);
1529                                         procmsg_msginfo_set_flags(cached, MSG_FULLY_CACHED, 0);
1530                                 }
1531                                 procmsg_msginfo_free(cached);
1532                                 return filename;
1533                         } else if (!cached && time(NULL) - get_file_mtime(filename) < 60) {
1534                                 debug_print("message not cached and file recent, considering file complete\n");
1535                                 ok = file_strip_crs(filename);
1536                                 if (ok == 0)
1537                                         return filename;
1538                         } else {
1539                                 procmsg_msginfo_free(cached);
1540                         }
1541                 }
1542                 if (cached && MSG_IS_FULLY_CACHED(cached->flags)) {
1543                         procmsg_msginfo_free(cached);
1544                         return filename;
1545                 }
1546         } else {
1547                 MsgInfo *cached = msgcache_get_msg(item->cache,uid);
1548                 if (cached) {
1549                         procmsg_msginfo_unset_flags(cached, MSG_FULLY_CACHED, 0);
1550                         procmsg_msginfo_free(cached);
1551                 }
1552         }
1553
1554         debug_print("getting session...\n");
1555         session = imap_session_get(folder);
1556
1557         if (!session) {
1558                 g_free(filename);
1559                 return NULL;
1560         }
1561         session_set_access_time(SESSION(session));
1562         lock_session(session); /* unlocked later in the function */
1563
1564         debug_print("IMAP fetching messages\n");
1565         ok = imap_select(session, IMAP_FOLDER(folder), item,
1566                          NULL, NULL, NULL, NULL, NULL, FALSE);
1567         if (ok != MAILIMAP_NO_ERROR) {
1568                 g_warning("can't select mailbox %s\n", item->path);
1569                 g_free(filename);
1570                 return NULL;
1571         }
1572
1573         session_set_access_time(SESSION(session));
1574
1575         debug_print("getting message %d...\n", uid);
1576         ok = imap_cmd_fetch(session, (guint32)uid, filename, headers, body);
1577
1578         if (ok != MAILIMAP_NO_ERROR) {
1579                 g_warning("can't fetch message %d\n", uid);
1580                 g_free(filename);
1581                 return NULL;
1582         }
1583
1584         session_set_access_time(SESSION(session));
1585         unlock_session(session);
1586
1587         ok = file_strip_crs(filename);
1588
1589         if (ok == 0 && headers && body) {
1590                 MsgInfo *cached = msgcache_get_msg(item->cache,uid);
1591                 if (cached) {
1592                         procmsg_msginfo_set_flags(cached, MSG_FULLY_CACHED, 0);
1593                         procmsg_msginfo_free(cached);
1594                 }
1595         } else if (ok == -1) {
1596                 MsgInfo *cached = msgcache_get_msg(item->cache,uid);
1597                 if (cached) {
1598                         procmsg_msginfo_unset_flags(cached, MSG_FULLY_CACHED, 0);
1599                         procmsg_msginfo_free(cached);
1600                 }
1601         }
1602         return filename;
1603 }
1604
1605 static gboolean imap_is_msg_fully_cached(Folder *folder, FolderItem *item, gint uid)
1606 {
1607         gchar *filename;
1608         guint size = 0;
1609         MsgInfo *cached = msgcache_get_msg(item->cache,uid);
1610
1611         if (!cached)
1612                 return FALSE;
1613
1614         if (MSG_IS_FULLY_CACHED(cached->flags)) {
1615                 procmsg_msginfo_free(cached);
1616                 return TRUE;
1617         }
1618
1619         filename = imap_get_cached_filename(item, uid);
1620
1621         if (is_file_exist(filename)) {
1622                 if (cached && cached->total_size == cached->size) {
1623                         /* fast path */
1624                         g_free(filename);
1625                         procmsg_msginfo_set_flags(cached, MSG_FULLY_CACHED, 0);
1626                         return TRUE;
1627                 }
1628                 size = get_file_size_with_crs(filename);
1629         }
1630         g_free(filename);
1631         debug_print("msg %d cached, has size %d, full should be %zd.\n", uid, size, cached->size);
1632         if (cached && size >= cached->size) {
1633                 cached->total_size = cached->size;
1634                 procmsg_msginfo_set_flags(cached, MSG_FULLY_CACHED, 0);
1635                 procmsg_msginfo_free(cached);
1636                 return TRUE;
1637         }
1638         if (cached)
1639                 procmsg_msginfo_free(cached);
1640         return FALSE;
1641 }
1642
1643 void imap_cache_msg(FolderItem *item, gint msgnum)
1644 {
1645         Folder *folder = NULL;
1646
1647         if (!item)
1648                 return;
1649         folder = item->folder;
1650
1651         if (!imap_is_msg_fully_cached(folder, item, msgnum)) {
1652                 gchar *tmp = imap_fetch_msg_full(folder, item, msgnum, TRUE, TRUE);
1653                 debug_print("fetched %s\n", tmp);
1654                 g_free(tmp);
1655         }
1656 }
1657
1658 static gint imap_add_msg(Folder *folder, FolderItem *dest,
1659                          const gchar *file, MsgFlags *flags)
1660 {
1661         gint ret;
1662         GSList file_list;
1663         MsgFileInfo fileinfo;
1664
1665         g_return_val_if_fail(file != NULL, -1);
1666
1667         fileinfo.msginfo = NULL;
1668         fileinfo.file = (gchar *)file;
1669         fileinfo.flags = flags;
1670         file_list.data = &fileinfo;
1671         file_list.next = NULL;
1672
1673         ret = imap_add_msgs(folder, dest, &file_list, NULL);
1674         return ret;
1675 }
1676
1677 static gint imap_add_msgs(Folder *folder, FolderItem *dest, GSList *file_list,
1678                    GHashTable *relation)
1679 {
1680         gchar *destdir;
1681         IMAPSession *session;
1682         guint32 last_uid = 0;
1683         GSList *cur;
1684         MsgFileInfo *fileinfo;
1685         gint ok = MAILIMAP_NO_ERROR;
1686         gint curnum = 0, total = 0;
1687         gboolean missing_uids = FALSE;
1688
1689         g_return_val_if_fail(folder != NULL, -1);
1690         g_return_val_if_fail(dest != NULL, -1);
1691         g_return_val_if_fail(file_list != NULL, -1);
1692
1693         debug_print("getting session...\n");
1694         session = imap_session_get(folder);
1695         if (!session) {
1696                 return -1;
1697         }
1698         destdir = imap_get_real_path(session, IMAP_FOLDER(folder), dest->path, &ok);
1699         if (is_fatal(ok)) {
1700                 g_free(destdir);
1701                 return -1;
1702         }
1703         statusbar_print_all(_("Adding messages..."));
1704         total = g_slist_length(file_list);
1705         for (cur = file_list; cur != NULL; cur = cur->next) {
1706                 IMAPFlags iflags = 0;
1707                 guint32 new_uid = 0;
1708                 gchar *real_file = NULL;
1709                 fileinfo = (MsgFileInfo *)cur->data;
1710
1711                 statusbar_progress_all(curnum, total, total < 10 ? 1:10);
1712                 curnum++;
1713
1714                 if (fileinfo->flags) {
1715                         if (MSG_IS_MARKED(*fileinfo->flags))
1716                                 iflags |= IMAP_FLAG_FLAGGED;
1717                         if (MSG_IS_REPLIED(*fileinfo->flags))
1718                                 iflags |= IMAP_FLAG_ANSWERED;
1719                         if (MSG_IS_FORWARDED(*fileinfo->flags))
1720                                 iflags |= IMAP_FLAG_FORWARDED;
1721                         if (MSG_IS_SPAM(*fileinfo->flags))
1722                                 iflags |= IMAP_FLAG_SPAM;
1723                         else
1724                                 iflags |= IMAP_FLAG_HAM;
1725                         if (!MSG_IS_UNREAD(*fileinfo->flags))
1726                                 iflags |= IMAP_FLAG_SEEN;
1727
1728                 }
1729
1730                 if (real_file == NULL)
1731                         real_file = g_strdup(fileinfo->file);
1732
1733                 if (folder_has_parent_of_type(dest, F_QUEUE) ||
1734                     folder_has_parent_of_type(dest, F_OUTBOX) ||
1735                     folder_has_parent_of_type(dest, F_DRAFT) ||
1736                     folder_has_parent_of_type(dest, F_TRASH))
1737                         iflags |= IMAP_FLAG_SEEN;
1738
1739                 ok = imap_cmd_append(session, IMAP_FOLDER_ITEM(dest), destdir, real_file, iflags,
1740                                      &new_uid);
1741
1742                 if (ok != MAILIMAP_NO_ERROR) {
1743                         g_warning("can't append message %s\n", real_file);
1744                         g_free(real_file);
1745                         g_free(destdir);
1746                         statusbar_progress_all(0,0,0);
1747                         statusbar_pop_all();
1748                         return -1;
1749                 } else {
1750                         debug_print("appended new message as %d\n", new_uid);
1751                         /* put the local file in the imapcache, so that we don't
1752                          * have to fetch it back later. */
1753
1754                         if (new_uid == 0) {
1755                                 missing_uids = TRUE;
1756                                 debug_print("Missing UID (0)\n");
1757                         }
1758                         if (new_uid > 0) {
1759                                 gchar *cache_path = folder_item_get_path(dest);
1760                                 if (!is_dir_exist(cache_path))
1761                                         make_dir_hier(cache_path);
1762                                 if (is_dir_exist(cache_path)) {
1763                                         gchar *cache_file = g_strconcat(
1764                                                 cache_path, G_DIR_SEPARATOR_S,
1765                                                 itos(new_uid), NULL);
1766                                         copy_file(real_file, cache_file, TRUE);
1767                                         debug_print("got UID %d, copied to cache: %s\n", new_uid, cache_file);
1768                                         g_free(cache_file);
1769                                 }
1770                                 g_free(cache_path);
1771                         }
1772                 }
1773
1774                 if (relation != NULL)
1775                         g_hash_table_insert(relation, fileinfo->msginfo != NULL ?
1776                                           (gpointer) fileinfo->msginfo : (gpointer) fileinfo,
1777                                           GINT_TO_POINTER(new_uid));
1778                 if (last_uid < new_uid) {
1779                         last_uid = new_uid;
1780                 }
1781
1782                 g_free(real_file);
1783         }
1784
1785         statusbar_progress_all(0,0,0);
1786         statusbar_pop_all();
1787
1788
1789         g_free(destdir);
1790
1791         imap_scan_required(folder, dest);
1792
1793         session = imap_session_get(folder);
1794         if (!session) {
1795                 return -1;
1796         }
1797         if (missing_uids) {
1798                 gint a;
1799                 ok = imap_select(session, IMAP_FOLDER(folder), dest,
1800                          &a, NULL, NULL, NULL, NULL, FALSE);
1801         }
1802         return last_uid;
1803 }
1804
1805 static GSList *flatten_mailimap_set(struct mailimap_set * set)
1806 {
1807         GSList *result = NULL;
1808         clistiter *list;
1809         guint32 start, end, t;
1810         GSList *cur;
1811
1812         if (!set || !set->set_list)
1813                 return NULL;
1814
1815         for (list = clist_begin(set->set_list); list; list = clist_next(list)) {
1816                 struct mailimap_set_item *item = (struct mailimap_set_item *)clist_content(list);
1817                 start = item->set_first;
1818                 end = item->set_last;
1819                 if (start <= end) {
1820                         for (t = start; t <= end; t++) {
1821                                 result = g_slist_prepend(result, GINT_TO_POINTER(t));
1822                         }
1823                 }
1824         }
1825         result = g_slist_reverse(result);
1826         if (debug_get_mode()) {
1827                 debug_print("flat imap set: ");
1828                 for (cur = result; cur; cur = cur->next) {
1829                         debug_print("%d ", GPOINTER_TO_INT(cur->data));
1830                 }
1831                 debug_print("\n");
1832         }
1833
1834         return result;
1835 }
1836 static gint imap_do_copy_msgs(Folder *folder, FolderItem *dest,
1837                               MsgInfoList *msglist, GHashTable *relation,
1838                               gboolean same_dest_ok)
1839 {
1840         FolderItem *src;
1841         gchar *destdir;
1842         GSList *seq_list, *cur;
1843         MsgInfo *msginfo;
1844         IMAPSession *session;
1845         gint ok = MAILIMAP_NO_ERROR;
1846         GHashTable *uid_hash;
1847         gint last_num = 0;
1848
1849         g_return_val_if_fail(folder != NULL, -1);
1850         g_return_val_if_fail(dest != NULL, -1);
1851         g_return_val_if_fail(msglist != NULL, -1);
1852
1853         debug_print("getting session...\n");
1854         session = imap_session_get(folder);
1855
1856         if (!session) {
1857                 return -1;
1858         }
1859
1860         msginfo = (MsgInfo *)msglist->data;
1861         src = msginfo->folder;
1862         if (!same_dest_ok && src == dest) {
1863                 g_warning("the src folder is identical to the dest.\n");
1864                 return -1;
1865         }
1866
1867         if (src->folder != dest->folder) {
1868                 GSList *infolist = NULL, *cur;
1869                 int res = -1;
1870                 for (cur = msglist; cur; cur = cur->next) {
1871                         msginfo = (MsgInfo *)cur->data;
1872                         MsgFileInfo *fileinfo = g_new0(MsgFileInfo, 1);
1873                         fileinfo->file = procmsg_get_message_file(msginfo);
1874                         fileinfo->flags = &(msginfo->flags);
1875                         infolist = g_slist_prepend(infolist, fileinfo);
1876                 }
1877                 infolist = g_slist_reverse(infolist);
1878                 res = folder_item_add_msgs(dest, infolist, FALSE);
1879                 for (cur = infolist; cur; cur = cur->next) {
1880                         MsgFileInfo *info = (MsgFileInfo *)cur->data;
1881                         g_free(info->file);
1882                         g_free(info);
1883                 }
1884                 g_slist_free(infolist);
1885                 return res;
1886         }
1887
1888         lock_session(session); /* unlocked later in the function */
1889
1890         ok = imap_select(session, IMAP_FOLDER(folder), msginfo->folder,
1891                          NULL, NULL, NULL, NULL, NULL, FALSE);
1892         if (ok != MAILIMAP_NO_ERROR) {
1893                 return ok;
1894         }
1895
1896         unlock_session(session);
1897
1898         destdir = imap_get_real_path(session, IMAP_FOLDER(folder), dest->path, &ok);
1899
1900         if (is_fatal(ok)) {
1901                 g_free(destdir);
1902                 return ok;
1903         }
1904
1905         seq_list = imap_get_lep_set_from_msglist(IMAP_FOLDER(folder), msglist);
1906         uid_hash = g_hash_table_new(g_direct_hash, g_direct_equal);
1907
1908         statusbar_print_all(_("Copying messages..."));
1909         for (cur = seq_list; cur != NULL; cur = g_slist_next(cur)) {
1910                 struct mailimap_set * seq_set;
1911                 struct mailimap_set * source = NULL;
1912                 struct mailimap_set * dest = NULL;
1913                 seq_set = cur->data;
1914
1915                 debug_print("Copying messages from %s to %s ...\n",
1916                             src->path, destdir);
1917
1918                 lock_session(session); /* unlocked later in the function */
1919                 ok = imap_cmd_copy(session, seq_set, destdir,
1920                         &source, &dest);
1921
1922                 if (is_fatal(ok)) {
1923                         session = NULL;
1924                 }
1925
1926                 if (ok == MAILIMAP_NO_ERROR) {
1927                         unlock_session(session);
1928                         if (relation && source && dest) {
1929                                 GSList *s_list = flatten_mailimap_set(source);
1930                                 GSList *d_list = flatten_mailimap_set(dest);
1931                                 GSList *s_cur, *d_cur;
1932                                 if (g_slist_length(s_list) == g_slist_length(d_list)) {
1933
1934                                         for (s_cur = s_list, d_cur = d_list;
1935                                              s_cur && d_cur;
1936                                              s_cur = s_cur->next, d_cur = d_cur->next) {
1937                                                 g_hash_table_insert(uid_hash, s_cur->data, d_cur->data);
1938                                         }
1939
1940                                 } else {
1941                                         debug_print("hhhmm, source list length != dest list length.\n");
1942                                 }
1943                                 g_slist_free(s_list);
1944                                 g_slist_free(d_list);
1945                         }
1946                 }
1947
1948
1949                 if (source)
1950                         mailimap_set_free(source);
1951                 if (dest)
1952                         mailimap_set_free(dest);
1953
1954                 if (ok != MAILIMAP_NO_ERROR) {
1955                         g_hash_table_destroy(uid_hash);
1956                         imap_lep_set_free(seq_list);
1957                         statusbar_pop_all();
1958                         return -1;
1959                 }
1960         }
1961
1962         for (cur = msglist; cur != NULL; cur = g_slist_next(cur)) {
1963                 MsgInfo *msginfo = (MsgInfo *)cur->data;
1964                 gpointer hashval;
1965
1966                 hashval = g_hash_table_lookup(uid_hash, GINT_TO_POINTER(msginfo->msgnum));
1967
1968                 if (hashval != NULL) {
1969                         gint num = GPOINTER_TO_INT(hashval);
1970                         g_hash_table_insert(relation, msginfo,
1971                                           GINT_TO_POINTER(num));
1972                         if (num > last_num)
1973                                 last_num = num;
1974                         debug_print("copied message %d as %d\n", msginfo->msgnum, num);
1975                         /* put the local file in the imapcache, so that we don't
1976                          * have to fetch it back later. */
1977                         if (num > 0) {
1978                                 gchar *cache_path = folder_item_get_path(msginfo->folder);
1979                                 gchar *real_file = g_strconcat(
1980                                         cache_path, G_DIR_SEPARATOR_S,
1981                                         itos(msginfo->msgnum), NULL);
1982                                 gchar *cache_file = NULL;
1983                                 g_free(cache_path);
1984                                 cache_path = folder_item_get_path(dest);
1985                                 cache_file = g_strconcat(
1986                                         cache_path, G_DIR_SEPARATOR_S,
1987                                         itos(num), NULL);
1988                                 if (!is_dir_exist(cache_path))
1989                                         make_dir_hier(cache_path);
1990                                 if (is_file_exist(real_file) && is_dir_exist(cache_path)) {
1991                                         copy_file(real_file, cache_file, TRUE);
1992                                         debug_print("copied to cache: %s\n", cache_file);
1993                                 }
1994                                 g_free(real_file);
1995                                 g_free(cache_file);
1996                                 g_free(cache_path);
1997                         }
1998                 } else
1999                         g_hash_table_insert(relation, msginfo,
2000                                           GINT_TO_POINTER(0));
2001         }
2002         statusbar_pop_all();
2003
2004         g_hash_table_destroy(uid_hash);
2005         imap_lep_set_free(seq_list);
2006
2007         g_free(destdir);
2008
2009         IMAP_FOLDER_ITEM(dest)->lastuid = 0;
2010         IMAP_FOLDER_ITEM(dest)->uid_next = 0;
2011         g_slist_free(IMAP_FOLDER_ITEM(dest)->uid_list);
2012         IMAP_FOLDER_ITEM(dest)->uid_list = NULL;
2013
2014         imap_scan_required(folder, dest);
2015         if (ok == MAILIMAP_NO_ERROR)
2016                 return last_num;
2017         else
2018                 return -1;
2019 }
2020
2021 static gint imap_copy_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
2022 {
2023         GSList msglist;
2024
2025         g_return_val_if_fail(msginfo != NULL, -1);
2026
2027         msglist.data = msginfo;
2028         msglist.next = NULL;
2029
2030         return imap_copy_msgs(folder, dest, &msglist, NULL);
2031 }
2032
2033 static gint imap_copy_msgs(Folder *folder, FolderItem *dest,
2034                     MsgInfoList *msglist, GHashTable *relation)
2035 {
2036         MsgInfo *msginfo;
2037         gint ret;
2038
2039         g_return_val_if_fail(folder != NULL, -1);
2040         g_return_val_if_fail(dest != NULL, -1);
2041         g_return_val_if_fail(msglist != NULL, -1);
2042
2043         msginfo = (MsgInfo *)msglist->data;
2044         g_return_val_if_fail(msginfo->folder != NULL, -1);
2045
2046         ret = imap_do_copy_msgs(folder, dest, msglist, relation, FALSE);
2047         return ret;
2048 }
2049
2050 static gboolean imap_matcher_type_is_local(gint matchertype)
2051 {
2052         switch (matchertype) {
2053         case MATCHCRITERIA_FROM:
2054         case MATCHCRITERIA_TO:
2055         case MATCHCRITERIA_CC:
2056         case MATCHCRITERIA_TO_OR_CC:
2057         case MATCHCRITERIA_SUBJECT:
2058         case MATCHCRITERIA_REFERENCES:
2059         case MATCHCRITERIA_INREPLYTO:
2060         case MATCHCRITERIA_AGE_GREATER:
2061         case MATCHCRITERIA_AGE_LOWER:
2062         case MATCHCRITERIA_FORWARDED:
2063         case MATCHCRITERIA_SPAM:
2064         case MATCHCRITERIA_UNREAD:
2065         case MATCHCRITERIA_NEW:
2066         case MATCHCRITERIA_MARKED:
2067         case MATCHCRITERIA_REPLIED:
2068         case MATCHCRITERIA_DELETED:
2069         case MATCHCRITERIA_SIZE_GREATER:
2070         case MATCHCRITERIA_SIZE_SMALLER:
2071         case MATCHCRITERIA_SIZE_EQUAL:
2072                 return TRUE;
2073         }
2074         return FALSE;
2075 }
2076
2077 static IMAPSearchKey* search_make_key(MatcherProp* match, gboolean* is_all)
2078 {
2079         if (match->matchtype == MATCHTYPE_MATCHCASE || match->matchtype == MATCHTYPE_MATCH) {
2080                 IMAPSearchKey* result = NULL;
2081                 gboolean invert = FALSE;
2082                 gint matchertype = match->criteria;
2083
2084                 if (is_all) {
2085                         *is_all = FALSE;
2086                 }
2087
2088                 switch (matchertype) {
2089                 case MATCHCRITERIA_NOT_NEW: invert = TRUE; matchertype = MATCHCRITERIA_NEW; break;
2090                 case MATCHCRITERIA_NOT_MARKED: invert = TRUE; matchertype = MATCHCRITERIA_MARKED; break;
2091                 case MATCHCRITERIA_NOT_FORWARDED: invert = TRUE; matchertype = MATCHCRITERIA_FORWARDED; break;
2092                 case MATCHCRITERIA_NOT_SPAM: invert = TRUE; matchertype = MATCHCRITERIA_SPAM; break;
2093                 case MATCHCRITERIA_NOT_SUBJECT: invert = TRUE; matchertype = MATCHCRITERIA_SUBJECT; break;
2094                 case MATCHCRITERIA_NOT_FROM: invert = TRUE; matchertype = MATCHCRITERIA_FROM; break;
2095                 case MATCHCRITERIA_NOT_TO: invert = TRUE; matchertype = MATCHCRITERIA_TO; break;
2096                 case MATCHCRITERIA_NOT_CC: invert = TRUE; matchertype = MATCHCRITERIA_CC; break;
2097                 case MATCHCRITERIA_NOT_REFERENCES: invert = TRUE; matchertype = MATCHCRITERIA_REFERENCES; break;
2098                 case MATCHCRITERIA_NOT_HEADER: invert = TRUE; matchertype = MATCHCRITERIA_HEADER; break;
2099                 case MATCHCRITERIA_NOT_TAG: invert = TRUE; matchertype = MATCHCRITERIA_TAG; break;
2100                 case MATCHCRITERIA_NOT_HEADERS_PART: invert = TRUE; matchertype = MATCHCRITERIA_HEADERS_PART; break;
2101                 case MATCHCRITERIA_NOT_MESSAGE: invert = TRUE; matchertype = MATCHCRITERIA_MESSAGE; break;
2102                 case MATCHCRITERIA_NOT_BODY_PART: invert = TRUE; matchertype = MATCHCRITERIA_BODY_PART; break;
2103                 case MATCHCRITERIA_NOT_TO_AND_NOT_CC: invert = TRUE; matchertype = MATCHCRITERIA_TO_OR_CC; break;
2104                 case MATCHCRITERIA_NOT_INREPLYTO: invert = TRUE; matchertype = MATCHCRITERIA_INREPLYTO; break;
2105                 }
2106
2107                 /*
2108                  * this aborts conversion even for predicates understood by the following code.
2109                  * while that might seem wasteful, claws local search for information listed below
2110                  * has proven faster than IMAP search plus network roundtrips. once this changes,
2111                  * consider removing these exceptions.
2112                  */
2113                 if (imap_matcher_type_is_local(matchertype))
2114                         return NULL;
2115
2116                 /* the Message-ID header is also cached */
2117                 if (matchertype == MATCHCRITERIA_HEADER && g_strcmp0("Message-ID", match->header) == 0) {
2118                         return NULL;
2119                 }
2120
2121                 switch (matchertype) {
2122                 case MATCHCRITERIA_FORWARDED:
2123                         result = imap_search_new(IMAP_SEARCH_CRITERIA_TAG, NULL, RTAG_FORWARDED, 0);
2124                         break;
2125
2126                 case MATCHCRITERIA_SPAM:
2127                         result = imap_search_new(IMAP_SEARCH_CRITERIA_TAG, NULL, RTAG_JUNK, 0);
2128                         break;
2129
2130                 case MATCHCRITERIA_INREPLYTO:
2131                         result = imap_search_new(IMAP_SEARCH_CRITERIA_HEADER, "In-Reply-To", match->expr, 0);
2132                         break;
2133
2134                 case MATCHCRITERIA_REFERENCES:
2135                         result = imap_search_new(IMAP_SEARCH_CRITERIA_HEADER, "References", match->expr, 0);
2136                         break;
2137
2138                 case MATCHCRITERIA_TO_OR_CC:
2139                         result = imap_search_or(
2140                                         imap_search_new(IMAP_SEARCH_CRITERIA_TO, NULL, match->expr, 0),
2141                                         imap_search_new(IMAP_SEARCH_CRITERIA_CC, NULL, match->expr, 0)
2142                                         );
2143                         break;
2144
2145                 case MATCHCRITERIA_HEADERS_PART:
2146                         result = imap_search_and(
2147                                         imap_search_not(imap_search_new(IMAP_SEARCH_CRITERIA_BODY, NULL, match->expr, 0)),
2148                                         imap_search_new(IMAP_SEARCH_CRITERIA_MESSAGE, NULL, match->expr, 0)
2149                                         );
2150                         break;
2151
2152                 case MATCHCRITERIA_SIZE_EQUAL:
2153                         result = imap_search_and(
2154                                         imap_search_not(imap_search_new(IMAP_SEARCH_CRITERIA_SIZE_SMALLER, NULL, NULL, match->value)),
2155                                         imap_search_not(imap_search_new(IMAP_SEARCH_CRITERIA_SIZE_GREATER, NULL, NULL, match->value))
2156                                         );
2157                         break;
2158
2159                 case MATCHCRITERIA_NOT_UNREAD:
2160                         result = imap_search_new(IMAP_SEARCH_CRITERIA_READ, NULL, NULL, 0);
2161                         break;
2162
2163                 case MATCHCRITERIA_UNREAD:
2164                         result = imap_search_new(IMAP_SEARCH_CRITERIA_UNREAD, NULL, NULL, 0);
2165                         break;
2166
2167                 case MATCHCRITERIA_NEW:
2168                         result = imap_search_new(IMAP_SEARCH_CRITERIA_NEW, NULL, NULL, 0);
2169                         break;
2170
2171                 case MATCHCRITERIA_MARKED:
2172                         result = imap_search_new(IMAP_SEARCH_CRITERIA_MARKED, NULL, NULL, 0);
2173                         break;
2174
2175                 case MATCHCRITERIA_DELETED:
2176                         result = imap_search_new(IMAP_SEARCH_CRITERIA_DELETED, NULL, NULL, 0);
2177                         break;
2178
2179                 case MATCHCRITERIA_REPLIED:
2180                         result = imap_search_new(IMAP_SEARCH_CRITERIA_REPLIED, NULL, NULL, 0);
2181                         break;
2182
2183                 case MATCHCRITERIA_TAG:
2184                         {
2185                                 gchar *tmp = imap_utf8_to_modified_utf7(match->expr, TRUE);
2186                                 result = imap_search_new(IMAP_SEARCH_CRITERIA_TAG, NULL, tmp, 0);
2187                                 g_free(tmp);
2188                         }
2189                         break;
2190
2191                 case MATCHCRITERIA_SUBJECT:
2192                         result = imap_search_new(IMAP_SEARCH_CRITERIA_SUBJECT, NULL, match->expr, 0);
2193                         break;
2194
2195                 case MATCHCRITERIA_FROM:
2196                         result = imap_search_new(IMAP_SEARCH_CRITERIA_FROM, NULL, match->expr, 0);
2197                         break;
2198
2199                 case MATCHCRITERIA_TO:
2200                         result = imap_search_new(IMAP_SEARCH_CRITERIA_TO, NULL, match->expr, 0);
2201                         break;
2202
2203                 case MATCHCRITERIA_CC:
2204                         result = imap_search_new(IMAP_SEARCH_CRITERIA_CC, NULL, match->expr, 0);
2205                         break;
2206
2207                 case MATCHCRITERIA_AGE_GREATER:
2208                         result = imap_search_new(IMAP_SEARCH_CRITERIA_AGE_GREATER, NULL, NULL, match->value);
2209                         break;
2210
2211                 case MATCHCRITERIA_AGE_LOWER:
2212                         result = imap_search_new(IMAP_SEARCH_CRITERIA_AGE_LOWER, NULL, NULL, match->value);
2213                         break;
2214
2215                 case MATCHCRITERIA_BODY_PART:
2216                         result = imap_search_new(IMAP_SEARCH_CRITERIA_BODY, NULL, match->expr, 0);
2217                         break;
2218
2219                 case MATCHCRITERIA_MESSAGE:
2220                         result = imap_search_new(IMAP_SEARCH_CRITERIA_MESSAGE, NULL, match->expr, 0);
2221                         break;
2222
2223                 case MATCHCRITERIA_HEADER:
2224                         result = imap_search_new(IMAP_SEARCH_CRITERIA_HEADER, match->header, match->expr, 0);
2225                         break;
2226
2227                 case MATCHCRITERIA_SIZE_GREATER:
2228                         result = imap_search_new(IMAP_SEARCH_CRITERIA_SIZE_GREATER, NULL, NULL, match->value);
2229                         break;
2230
2231                 case MATCHCRITERIA_SIZE_SMALLER:
2232                         result = imap_search_new(IMAP_SEARCH_CRITERIA_SIZE_SMALLER, NULL, NULL, match->value);
2233                         break;
2234
2235                 default:
2236                         result = imap_search_new(IMAP_SEARCH_CRITERIA_ALL, NULL, NULL, 0);
2237                         if (is_all) {
2238                                 *is_all = TRUE;
2239                         }
2240                         break;
2241                 }
2242
2243                 if (invert) {
2244                         result = imap_search_not(result);
2245                         if (is_all && *is_all) {
2246                                 *is_all = FALSE;
2247                         }
2248                 }
2249
2250                 return result;
2251         }
2252
2253         return NULL;
2254 }
2255
2256 static void imap_change_search_charset(IMAPFolder *folder)
2257 {
2258         /* If server supports charset in searches, but the last used one failed,
2259          * changed to the next preferred charset. If none are still available,
2260          * disable charset searches.
2261          * Charsets are tried in the following order:
2262          * UTF-8, locale's charset, UTF-7.
2263          */
2264
2265         if (folder->search_charset_supported) {
2266                 if (folder->search_charset && !strcmp(folder->search_charset, conv_get_locale_charset_str_no_utf8()))
2267                         folder->search_charset = "UTF-8";
2268                 else if (folder->search_charset && !strcmp(folder->search_charset, "UTF-8"))
2269                         folder->search_charset = "UTF-7";
2270                 else {
2271                         folder->search_charset = NULL;
2272                         folder->search_charset_supported = FALSE;
2273                 }
2274         }
2275 }
2276
2277 static MatcherProp *imap_matcher_prop_set_charset(IMAPFolder *folder,
2278                                                   MatcherProp *utf8_prop,
2279                                                   gchar **charset)
2280 {
2281         /* If the match is going to be done locally, or the criteria is on
2282          * tag (special-cased to modified-UTF-7), or the expression searched
2283          * is ASCII, don't bother converting.
2284          */
2285         if (imap_matcher_type_is_local(utf8_prop->criteria)
2286          || utf8_prop->criteria == MATCHCRITERIA_TAG
2287          || utf8_prop->criteria == MATCHCRITERIA_NOT_TAG
2288          || utf8_prop->expr == NULL
2289          || is_ascii_str(utf8_prop->expr))
2290                 return matcherprop_new(utf8_prop->criteria,
2291                                utf8_prop->header,
2292                                utf8_prop->matchtype,
2293                                utf8_prop->expr,
2294                                utf8_prop->value);
2295         else {
2296                 gchar *conv_expr = NULL;
2297
2298                 /* If the search is server-side and the server doesn't support
2299                  * searching with the charsets we handle, bail out.
2300                  */
2301                 if (folder->search_charset_supported == FALSE)
2302                         return NULL;
2303
2304                 /* Else, convert. */
2305                 if (*charset == NULL)
2306                         *charset = g_strdup(folder->search_charset);
2307
2308                 conv_expr = conv_codeset_strdup(utf8_prop->expr, CS_UTF_8, *charset);
2309
2310                 if (conv_expr == NULL)
2311                         conv_expr = g_strdup(utf8_prop->expr);
2312
2313                 return matcherprop_new(utf8_prop->criteria,
2314                                utf8_prop->header,
2315                                utf8_prop->matchtype,
2316                                conv_expr,
2317                                utf8_prop->value);
2318         }
2319 }
2320
2321 static gint     search_msgs             (Folder                 *folder,
2322                                          FolderItem             *container,
2323                                          MsgNumberList          **msgs,
2324                                          gboolean               *on_server,
2325                                          MatcherList            *predicate,
2326                                          SearchProgressNotify   progress_cb,
2327                                          gpointer               progress_data)
2328 {
2329         IMAPSearchKey* key = NULL;
2330         GSList* cur;
2331         int result = -1;
2332         clist* uidlist = NULL;
2333         gboolean server_filtering_useless = FALSE;
2334         IMAPSession *session;
2335         gchar *charset_to_use = NULL;
2336
2337         if (on_server == NULL || !*on_server) {
2338                 return folder_item_search_msgs_local(folder, container, msgs, on_server,
2339                                 predicate, progress_cb, progress_data);
2340         }
2341
2342         for (cur = predicate->matchers; cur != NULL; cur = cur->next) {
2343                 IMAPSearchKey* matcherPart = NULL;
2344                 MatcherProp* prop = (MatcherProp*) cur->data;
2345                 gboolean is_all;
2346                 MatcherProp *imap_prop = imap_matcher_prop_set_charset(IMAP_FOLDER(folder), prop, &charset_to_use);
2347
2348                 if (imap_prop == NULL) {
2349                         /* Couldn't convert matcherprop to IMAP - probably not ascii
2350                          * and server doesn't support the charsets we do. */
2351                          return -1;
2352                 }
2353
2354                 matcherPart = search_make_key(imap_prop, &is_all);
2355
2356                 matcherprop_free(imap_prop);
2357
2358                 if (on_server) {
2359                         *on_server &= matcherPart != NULL && prop->matchtype == MATCHTYPE_MATCHCASE;
2360                 }
2361
2362                 if (matcherPart) {
2363                         if (key == NULL) {
2364                                 key = matcherPart;
2365                                 server_filtering_useless = is_all;
2366                         } else if (predicate->bool_and) {
2367                                 key = imap_search_and(key, matcherPart);
2368                                 server_filtering_useless &= is_all;
2369                         } else {
2370                                 key = imap_search_or(key, matcherPart);
2371                                 server_filtering_useless |= is_all;
2372                         }
2373                 }
2374         }
2375
2376         if (server_filtering_useless) {
2377                 imap_search_free(key);
2378                 key = NULL;
2379         }
2380
2381         if (key == NULL && progress_cb != NULL) {
2382                 GSList* cur;
2383                 GSList* list;
2384                 int count = 0;
2385
2386                 progress_cb(progress_data, TRUE, 0, 0, container->total_msgs);
2387                 progress_cb(progress_data, TRUE, container->total_msgs, 0, container->total_msgs);
2388
2389                 list = folder_item_get_msg_list(container);
2390                 for (cur = list; cur != NULL; cur = cur->next) {
2391                         *msgs = g_slist_prepend(*msgs, GUINT_TO_POINTER(((MsgInfo*) cur->data)->msgnum));
2392                         count++;
2393                 }
2394                 procmsg_msg_list_free(list);
2395
2396                 *msgs = g_slist_reverse(*msgs);
2397
2398                 return count;
2399         }
2400
2401         session = imap_session_get(folder);
2402         if (!session) {
2403                 return -1;
2404         }
2405         result = imap_select(session, IMAP_FOLDER(folder), FOLDER_ITEM(container),
2406                          NULL, NULL, NULL, NULL, NULL, TRUE);
2407         if (result != MAILIMAP_NO_ERROR)
2408                 return -1;
2409
2410         if (progress_cb)
2411                 progress_cb(progress_data, TRUE, 0, 0, container->total_msgs);
2412         result = imap_threaded_search(folder, IMAP_SEARCH_TYPE_KEYED, key, charset_to_use, NULL, &uidlist);
2413         if (progress_cb)
2414                 progress_cb(progress_data, TRUE, container->total_msgs, 0, container->total_msgs);
2415
2416         if (result == MAILIMAP_NO_ERROR) {
2417                 gint result = 0;
2418
2419                 *msgs = imap_uid_list_from_lep(uidlist, &result);
2420
2421                 mailimap_search_result_free(uidlist);
2422
2423                 if (charset_to_use != NULL)
2424                         g_free(charset_to_use);
2425
2426                 return result;
2427         } else if (charset_to_use != NULL) {
2428                 /* If search failed and was on an 8-bit string, try the next
2429                  * available charset to search if there still are some.
2430                  */
2431                 g_free(charset_to_use);
2432
2433                 imap_change_search_charset(IMAP_FOLDER(folder));
2434                 if (IMAP_FOLDER(folder)->search_charset_supported)
2435                         return search_msgs(folder, container, msgs, on_server, predicate,
2436                                    progress_cb, progress_data);
2437                 else
2438                         return -1;
2439         } else {
2440                 return -1;
2441         }
2442 }
2443
2444
2445 static gint imap_do_remove_msgs(Folder *folder, FolderItem *dest,
2446                                 MsgInfoList *msglist, GHashTable *relation)
2447 {
2448         gchar *destdir, *dir;
2449         GSList *numlist = NULL, *cur;
2450         MsgInfo *msginfo;
2451         IMAPSession *session;
2452         gint ok = MAILIMAP_NO_ERROR;
2453
2454         g_return_val_if_fail(folder != NULL, -1);
2455         g_return_val_if_fail(dest != NULL, -1);
2456         g_return_val_if_fail(msglist != NULL, -1);
2457
2458         debug_print("getting session...\n");
2459         session = imap_session_get(folder);
2460         if (!session) {
2461                 return -1;
2462         }
2463
2464         lock_session(session); /* unlocked later in the function */
2465
2466         msginfo = (MsgInfo *)msglist->data;
2467
2468         ok = imap_select(session, IMAP_FOLDER(folder), msginfo->folder,
2469                          NULL, NULL, NULL, NULL, NULL, FALSE);
2470         if (ok != MAILIMAP_NO_ERROR) {
2471                 return ok;
2472         }
2473
2474         destdir = imap_get_real_path(session, IMAP_FOLDER(folder), dest->path, &ok);
2475         if (is_fatal(ok)) {
2476                 g_free(destdir);
2477                 return ok;
2478         }
2479         for (cur = msglist; cur; cur = cur->next) {
2480                 msginfo = (MsgInfo *)cur->data;
2481                 if (!MSG_IS_DELETED(msginfo->flags))
2482                         numlist = g_slist_prepend(numlist, GINT_TO_POINTER(msginfo->msgnum));
2483         }
2484         numlist = g_slist_reverse(numlist);
2485
2486         if (numlist != NULL) {
2487                 ok = imap_set_message_flags
2488                         (session, IMAP_FOLDER_ITEM(msginfo->folder), numlist, IMAP_FLAG_DELETED, NULL, TRUE);
2489                 if (ok != MAILIMAP_NO_ERROR) {
2490                         log_warning(LOG_PROTOCOL, _("can't set deleted flags\n"));
2491                         g_free(destdir);
2492                         return ok;
2493                 }
2494         } /* else we just need to expunge */
2495         ok = imap_cmd_expunge(session, folder->account->imap_use_trash);
2496         if (ok != MAILIMAP_NO_ERROR) {
2497                 log_warning(LOG_PROTOCOL, _("can't expunge\n"));
2498                 g_free(destdir);
2499                 return ok;
2500         }
2501
2502         session->folder_content_changed = TRUE;
2503         unlock_session(session);
2504
2505         dir = folder_item_get_path(msginfo->folder);
2506         if (is_dir_exist(dir)) {
2507                 for (cur = msglist; cur; cur = cur->next) {
2508                         msginfo = (MsgInfo *)cur->data;
2509                         remove_numbered_files(dir, msginfo->msgnum, msginfo->msgnum);
2510                 }
2511         }
2512         g_free(dir);
2513
2514         g_slist_free(numlist);
2515
2516         imap_scan_required(folder, dest);
2517
2518         g_free(destdir);
2519
2520         return 0;
2521 }
2522
2523 static gint imap_remove_msgs(Folder *folder, FolderItem *dest,
2524                     MsgInfoList *msglist, GHashTable *relation)
2525 {
2526         MsgInfo *msginfo;
2527
2528         g_return_val_if_fail(folder != NULL, -1);
2529         g_return_val_if_fail(dest != NULL, -1);
2530         if (msglist == NULL)
2531                 return 0;
2532
2533         msginfo = (MsgInfo *)msglist->data;
2534         g_return_val_if_fail(msginfo->folder != NULL, -1);
2535
2536         return imap_do_remove_msgs(folder, dest, msglist, relation);
2537 }
2538
2539 static gint imap_remove_all_msg(Folder *folder, FolderItem *item)
2540 {
2541         GSList *list = folder_item_get_msg_list(item);
2542         gint res = imap_remove_msgs(folder, item, list, NULL);
2543         procmsg_msg_list_free(list);
2544         return res;
2545 }
2546
2547 static gboolean imap_is_msg_changed(Folder *folder, FolderItem *item,
2548                                     MsgInfo *msginfo)
2549 {
2550         /* TODO: properly implement this method */
2551         return FALSE;
2552 }
2553
2554 static gint imap_close(Folder *folder, FolderItem *item)
2555 {
2556         return 0;
2557 }
2558
2559 static gint imap_scan_tree_real(Folder *folder, gboolean subs_only)
2560 {
2561         FolderItem *item = NULL;
2562         IMAPSession *session;
2563         gchar *root_folder = NULL;
2564
2565         g_return_val_if_fail(folder != NULL, -1);
2566         g_return_val_if_fail(folder->account != NULL, -1);
2567
2568         debug_print("getting session...\n");
2569         session = imap_session_get(folder);
2570         if (!session) {
2571                 if (!folder->node) {
2572                         folder_tree_destroy(folder);
2573                         item = folder_item_new(folder, folder->name, NULL);
2574                         item->folder = folder;
2575                         folder->node = item->node = g_node_new(item);
2576                 }
2577                 return -1;
2578         }
2579
2580         if (folder->account->imap_dir && *folder->account->imap_dir) {
2581                 gchar *real_path;
2582                 int r = MAILIMAP_NO_ERROR;
2583                 clist * lep_list;
2584
2585                 Xstrdup_a(root_folder, folder->account->imap_dir, {return -1;});
2586                 extract_quote(root_folder, '"');
2587                 subst_char(root_folder,
2588                            imap_get_path_separator(session, IMAP_FOLDER(folder),
2589                                                    root_folder, &r),
2590                            '/');
2591                 if (is_fatal(r))
2592                         return -1;
2593                 strtailchomp(root_folder, '/');
2594                 real_path = imap_get_real_path
2595                         (session, IMAP_FOLDER(folder), root_folder, &r);
2596                 if (is_fatal(r)) {
2597                         g_free(real_path);
2598                         return -1;
2599                 }
2600                 debug_print("IMAP root directory: %s\n", real_path);
2601
2602                 /* check if root directory exist */
2603
2604                 r = imap_threaded_list(session->folder, "", real_path,
2605                                        &lep_list);
2606
2607                 if (r != MAILIMAP_NO_ERROR)
2608                         imap_handle_error(SESSION(session), NULL, r);
2609
2610                 if ((r != MAILIMAP_NO_ERROR) || (clist_count(lep_list) == 0)) {
2611                         if (!folder->node) {
2612                                 item = folder_item_new(folder, folder->name, NULL);
2613                                 item->folder = folder;
2614                                 folder->node = item->node = g_node_new(item);
2615                         }
2616                         return -1;
2617                 }
2618                 mailimap_list_result_free(lep_list);
2619
2620                 g_free(real_path);
2621         }
2622
2623         if (folder->node)
2624                 item = FOLDER_ITEM(folder->node->data);
2625
2626         if (item && !item->path && root_folder) {
2627                 item->path = g_strdup(root_folder);
2628         }
2629
2630         if (!item || ((item->path || root_folder) &&
2631                       strcmp2(item->path, root_folder) != 0)) {
2632                 folder_tree_destroy(folder);
2633                 item = folder_item_new(folder, folder->name, root_folder);
2634                 item->folder = folder;
2635                 folder->node = item->node = g_node_new(item);
2636         }
2637
2638         imap_scan_tree_recursive(session, FOLDER_ITEM(folder->node->data), subs_only);
2639         imap_create_missing_folders(folder);
2640
2641         return 0;
2642 }
2643
2644 static gint imap_scan_tree(Folder *folder)
2645 {
2646         gboolean subs_only = FALSE;
2647         if (folder->account) {
2648                 debug_print(" scanning only subs %d\n", folder->account->imap_subsonly);
2649                 subs_only = folder->account->imap_subsonly;
2650         }
2651         return imap_scan_tree_real(folder, subs_only);
2652 }
2653
2654 static gint imap_scan_tree_recursive(IMAPSession *session, FolderItem *item, gboolean subs_only)
2655 {
2656         Folder *folder;
2657         IMAPFolder *imapfolder;
2658         FolderItem *new_item;
2659         GSList *item_list, *cur;
2660         GNode *node;
2661         gchar *real_path;
2662         gchar *wildcard_path;
2663         gchar separator;
2664         gchar wildcard[3];
2665         clist * lep_list;
2666         int r = MAILIMAP_NO_ERROR;
2667
2668         g_return_val_if_fail(item != NULL, -1);
2669         g_return_val_if_fail(item->folder != NULL, -1);
2670         g_return_val_if_fail(item->no_sub == FALSE, -1);
2671
2672         folder = item->folder;
2673         imapfolder = IMAP_FOLDER(folder);
2674
2675         separator = imap_get_path_separator(session, imapfolder, item->path, &r);
2676         if (is_fatal(r))
2677                 return r;
2678
2679         if (folder->ui_func)
2680                 folder->ui_func(folder, item, folder->ui_func_data);
2681
2682         if (item->path) {
2683                 wildcard[0] = separator;
2684                 wildcard[1] = '%';
2685                 wildcard[2] = '\0';
2686                 real_path = imap_get_real_path(session, imapfolder, item->path, &r);
2687                 if (is_fatal(r)) {
2688                         g_free(real_path);
2689                         return r;
2690                 }
2691         } else {
2692                 wildcard[0] = '%';
2693                 wildcard[1] = '\0';
2694                 real_path = g_strdup("");
2695         }
2696
2697         Xstrcat_a(wildcard_path, real_path, wildcard,
2698                   {g_free(real_path); return MAILIMAP_ERROR_BAD_STATE;});
2699         lep_list = NULL;
2700
2701         if (subs_only)
2702                 r = imap_threaded_lsub(folder, "", wildcard_path, &lep_list);
2703         else
2704                 r = imap_threaded_list(folder, "", wildcard_path, &lep_list);
2705
2706         if (r != MAILIMAP_NO_ERROR) {
2707                 imap_handle_error(SESSION(session), NULL, r);
2708                 item_list = NULL;
2709                 g_free(real_path);
2710                 return r;
2711         }
2712         else {
2713                 item_list = imap_list_from_lep(imapfolder,
2714                                                lep_list, real_path, FALSE);
2715                 mailimap_list_result_free(lep_list);
2716         }
2717
2718         g_free(real_path);
2719
2720         node = item->node->children;
2721         while (node != NULL) {
2722                 FolderItem *old_item = FOLDER_ITEM(node->data);
2723                 GNode *next = node->next;
2724
2725                 new_item = NULL;
2726                 for (cur = item_list; cur != NULL; cur = cur->next) {
2727                         FolderItem *cur_item = FOLDER_ITEM(cur->data);
2728                         if (!strcmp2(old_item->path, cur_item->path)) {
2729                                 new_item = cur_item;
2730                                 break;
2731                         }
2732                 }
2733                 if (!new_item) {
2734                         if (old_item && old_item->path && !strcmp(old_item->path, "INBOX")) {
2735                                 debug_print("not removing INBOX\n");
2736                         } else {
2737                                 debug_print("folder '%s' not found. removing...\n",
2738                                             old_item->path);
2739                                 folder_item_remove(old_item);
2740                         }
2741                 } else {
2742                         old_item->no_sub = new_item->no_sub;
2743                         old_item->no_select = new_item->no_select;
2744                         if (old_item->no_sub == TRUE && node->children) {
2745                                 debug_print("folder '%s' doesn't have "
2746                                             "subfolders. removing...\n",
2747                                             old_item->path);
2748                                 folder_item_remove_children(old_item);
2749                         }
2750                 }
2751
2752                 node = next;
2753         }
2754
2755         for (cur = item_list; cur != NULL; cur = cur->next) {
2756                 FolderItem *cur_item = FOLDER_ITEM(cur->data);
2757                 new_item = NULL;
2758
2759                 for (node = item->node->children; node != NULL;
2760                      node = node->next) {
2761                         if (!strcmp2(FOLDER_ITEM(node->data)->path,
2762                                      cur_item->path)) {
2763                                 new_item = FOLDER_ITEM(node->data);
2764                                 folder_item_destroy(cur_item);
2765                                 cur_item = NULL;
2766                                 break;
2767                         }
2768                 }
2769                 if (!new_item) {
2770                         new_item = cur_item;
2771                         debug_print("new folder '%s' found.\n", new_item->path);
2772                         folder_item_append(item, new_item);
2773                 }
2774
2775                 if (!strcmp(new_item->path, "INBOX")) {
2776                         new_item->stype = F_INBOX;
2777                         folder->inbox = new_item;
2778                 } else if (!folder_item_parent(item) || item->stype == F_INBOX) {
2779                         gchar *base;
2780
2781                         base = g_path_get_basename(new_item->path);
2782
2783                         if (!folder->outbox && !g_ascii_strcasecmp(base, "Sent")) {
2784                                 new_item->stype = F_OUTBOX;
2785                                 folder->outbox = new_item;
2786                         } else if (!folder->draft && !g_ascii_strcasecmp(base, "Drafts")) {
2787                                 new_item->stype = F_DRAFT;
2788                                 folder->draft = new_item;
2789                         } else if (!folder->queue && !g_ascii_strcasecmp(base, "Queue")) {
2790                                 new_item->stype = F_QUEUE;
2791                                 folder->queue = new_item;
2792                         } else if (!folder->trash && !g_ascii_strcasecmp(base, "Trash")) {
2793                                 new_item->stype = F_TRASH;
2794                                 folder->trash = new_item;
2795                         }
2796                         g_free(base);
2797                 }
2798
2799                 if (new_item->no_sub == FALSE)
2800                         imap_scan_tree_recursive(session, new_item, subs_only);
2801         }
2802
2803         g_slist_free(item_list);
2804
2805         return MAILIMAP_NO_ERROR;
2806 }
2807
2808 GList *imap_scan_subtree(Folder *folder, FolderItem *item, gboolean unsubs_only, gboolean recursive)
2809 {
2810         IMAPSession *session = imap_session_get(folder);
2811         gchar *real_path;
2812         gchar *wildcard_path;
2813         gchar separator;
2814         gchar wildcard[3];
2815         clist * lep_list;
2816         GSList *item_list = NULL, *cur;
2817         GList *child_list = NULL, *tmplist = NULL;
2818         GSList *sub_list = NULL;
2819         int r = MAILIMAP_NO_ERROR;
2820
2821         if (!session)
2822                 return NULL;
2823
2824         separator = imap_get_path_separator(session, IMAP_FOLDER(folder), item->path, &r);
2825         if (is_fatal(r))
2826                 return NULL;
2827
2828         if (item->path) {
2829                 wildcard[0] = separator;
2830                 wildcard[1] = '%';
2831                 wildcard[2] = '\0';
2832                 real_path = imap_get_real_path(session, IMAP_FOLDER(folder), item->path, &r);
2833                 if (is_fatal(r)) {
2834                         g_free(real_path);
2835                         return NULL;
2836                 }
2837         } else {
2838                 wildcard[0] = '%';
2839                 wildcard[1] = '\0';
2840                 real_path = g_strdup("");
2841         }
2842
2843         Xstrcat_a(wildcard_path, real_path, wildcard,
2844                   {g_free(real_path); return NULL;});
2845         lep_list = NULL;
2846
2847         if (unsubs_only)
2848                 statusbar_print_all(_("Looking for unsubscribed folders in %s..."),
2849                                 item->path?item->path:item->name);
2850         else
2851                 statusbar_print_all(_("Looking for subfolders of %s..."),
2852                                 item->path?item->path:item->name);
2853
2854         r = imap_threaded_list(folder, "", wildcard_path, &lep_list);
2855         if (r) {
2856                 g_free(real_path);
2857                 statusbar_pop_all();
2858                 return NULL;
2859         }
2860         item_list = imap_list_from_lep(IMAP_FOLDER(folder),
2861                                lep_list, real_path, FALSE);
2862         mailimap_list_result_free(lep_list);
2863
2864         for (cur = item_list; cur != NULL; cur = cur->next) {
2865                 FolderItem *cur_item = FOLDER_ITEM(cur->data);
2866                 if (recursive) {
2867                         tmplist = imap_scan_subtree(folder, cur_item,
2868                                         unsubs_only, recursive);
2869                         if (tmplist)
2870                                 child_list = g_list_concat(child_list, tmplist);
2871                 }
2872                 child_list = g_list_prepend(child_list,
2873                                 imap_get_real_path(session,
2874                                         IMAP_FOLDER(folder), cur_item->path, &r));
2875                 if (is_fatal(r)) {
2876                         g_free(real_path);
2877                         statusbar_pop_all();
2878                         return NULL;
2879                 }
2880                 folder_item_destroy(cur_item);
2881         }
2882         child_list = g_list_reverse(child_list);
2883         g_slist_free(item_list);
2884
2885         if (unsubs_only) {
2886                 r = imap_threaded_lsub(folder, "", wildcard_path, &lep_list);
2887                 if (r) {
2888                         g_free(real_path);
2889                         statusbar_pop_all();
2890                         return NULL;
2891                 }
2892                 sub_list = imap_list_from_lep(IMAP_FOLDER(folder),
2893                                        lep_list, real_path, FALSE);
2894                 mailimap_list_result_free(lep_list);
2895
2896                 for (cur = sub_list; cur != NULL; cur = cur->next) {
2897                         FolderItem *cur_item = FOLDER_ITEM(cur->data);
2898                         GList *oldlitem = NULL;
2899                         gchar *tmp = imap_get_real_path(session,
2900                                         IMAP_FOLDER(folder), cur_item->path, &r);
2901                         if (r) {
2902                                 g_free(real_path);
2903                                 statusbar_pop_all();
2904                                 g_free(tmp);
2905                                 return NULL;
2906                         }
2907                         folder_item_destroy(cur_item);
2908                         oldlitem = g_list_find_custom(
2909                                         child_list, tmp, (GCompareFunc)strcmp2);
2910                         if (oldlitem) {
2911                                 child_list = g_list_remove_link(child_list, oldlitem);
2912                                 g_free(oldlitem->data);
2913                                 g_list_free(oldlitem);
2914                         }
2915                         g_free(tmp);
2916                 }
2917         }
2918
2919         g_free(real_path);
2920         statusbar_pop_all();
2921
2922         return child_list;
2923 }
2924
2925 static gint imap_create_tree(Folder *folder)
2926 {
2927         g_return_val_if_fail(folder != NULL, -1);
2928         g_return_val_if_fail(folder->node != NULL, -1);
2929         g_return_val_if_fail(folder->node->data != NULL, -1);
2930         g_return_val_if_fail(folder->account != NULL, -1);
2931
2932         imap_scan_tree(folder);
2933         imap_create_missing_folders(folder);
2934
2935         return 0;
2936 }
2937
2938 static void imap_create_missing_folders(Folder *folder)
2939 {
2940         g_return_if_fail(folder != NULL);
2941
2942         if (!folder->inbox)
2943                 folder->inbox = imap_create_special_folder
2944                         (folder, F_INBOX, "INBOX");
2945         if (!folder->trash)
2946                 folder->trash = imap_create_special_folder
2947                         (folder, F_TRASH, "Trash");
2948         if (!folder->queue)
2949                 folder->queue = imap_create_special_folder
2950                         (folder, F_QUEUE, "Queue");
2951         if (!folder->outbox)
2952                 folder->outbox = imap_create_special_folder
2953                         (folder, F_OUTBOX, "Sent");
2954         if (!folder->draft)
2955                 folder->draft = imap_create_special_folder
2956                         (folder, F_DRAFT, "Drafts");
2957 }
2958
2959 static FolderItem *imap_create_special_folder(Folder *folder,
2960                                               SpecialFolderItemType stype,
2961                                               const gchar *name)
2962 {
2963         FolderItem *item;
2964         FolderItem *new_item;
2965
2966         g_return_val_if_fail(folder != NULL, NULL);
2967         g_return_val_if_fail(folder->node != NULL, NULL);
2968         g_return_val_if_fail(folder->node->data != NULL, NULL);
2969         g_return_val_if_fail(folder->account != NULL, NULL);
2970         g_return_val_if_fail(name != NULL, NULL);
2971
2972         item = FOLDER_ITEM(folder->node->data);
2973         new_item = imap_create_folder(folder, item, name);
2974
2975         if (!new_item) {
2976                 g_warning("Can't create '%s'\n", name);
2977                 if (!folder->inbox) return NULL;
2978
2979                 new_item = imap_create_folder(folder, folder->inbox, name);
2980                 if (!new_item)
2981                         g_warning("Can't create '%s' under INBOX\n", name);
2982                 else
2983                         new_item->stype = stype;
2984         } else
2985                 new_item->stype = stype;
2986
2987         return new_item;
2988 }
2989
2990 static gchar *imap_folder_get_path(Folder *folder)
2991 {
2992         gchar *folder_path;
2993
2994         g_return_val_if_fail(folder != NULL, NULL);
2995         g_return_val_if_fail(folder->account != NULL, NULL);
2996
2997         folder_path = g_strconcat(get_imap_cache_dir(),
2998                                   G_DIR_SEPARATOR_S,
2999                                   folder->account->recv_server,
3000                                   G_DIR_SEPARATOR_S,
3001                                   folder->account->userid,
3002                                   NULL);
3003
3004         return folder_path;
3005 }
3006
3007 #ifdef G_OS_WIN32
3008 static gchar *imap_encode_unsafe_chars(const gchar *str)
3009 {
3010         gchar *ret = NULL, *o_ret;
3011         gchar *i;
3012         if (!str)
3013                 return NULL;
3014         ret = g_malloc(3*strlen(str)+1);
3015         o_ret = ret;
3016         for (i = str; *i; i++) {
3017                 switch(*i) {
3018                         case ':':
3019                         case '|':
3020                         case '<':
3021                         case '>':
3022                         case '*':
3023                         case '?':
3024                         case '#':
3025                                 *ret++ = '%';
3026                                 *ret++ = '0'+(*i/10);
3027                                 *ret++ = '0'+(*i%10);
3028                                 break;
3029                         default:
3030                                 *ret++ = *i;
3031                 }
3032         }
3033         *ret++ = '\0';
3034         return o_ret;
3035 }
3036 #endif
3037 static gchar *imap_item_get_path(Folder *folder, FolderItem *item)
3038 {
3039         gchar *folder_path, *path;
3040         gchar *item_path = NULL;
3041
3042         g_return_val_if_fail(folder != NULL, NULL);
3043         g_return_val_if_fail(item != NULL, NULL);
3044         folder_path = imap_folder_get_path(folder);
3045
3046         g_return_val_if_fail(folder_path != NULL, NULL);
3047
3048 #ifdef G_OS_UNIX
3049         item_path = g_strdup(item->path);
3050 #else
3051         item_path = imap_encode_unsafe_chars(item->path);
3052 #endif
3053
3054         if (g_path_is_absolute(folder_path)) {
3055                 if (item_path)
3056                         path = g_strconcat(folder_path, G_DIR_SEPARATOR_S,
3057                                            item_path, NULL);
3058                 else
3059                         path = g_strdup(folder_path);
3060         } else {
3061                 if (item_path)
3062                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
3063                                            folder_path, G_DIR_SEPARATOR_S,
3064                                            item_path, NULL);
3065                 else
3066                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
3067                                            folder_path, NULL);
3068         }
3069         g_free(folder_path);
3070         g_free(item_path);
3071 #ifdef G_OS_WIN32
3072         while (strchr(path, '/'))
3073                 *strchr(path, '/') = '\\';
3074 #endif
3075
3076         return path;
3077 }
3078
3079 static FolderItem *imap_create_folder(Folder *folder, FolderItem *parent,
3080                                const gchar *name)
3081 {
3082         gchar *dirpath, *imap_path;
3083         IMAPSession *session;
3084         FolderItem *new_item;
3085         gchar separator;
3086         gchar *new_name;
3087         const gchar *p;
3088         gint ok = MAILIMAP_NO_ERROR;
3089         gboolean no_select = FALSE, no_sub = FALSE;
3090         gboolean exist = FALSE;
3091
3092         g_return_val_if_fail(folder != NULL, NULL);
3093         g_return_val_if_fail(folder->account != NULL, NULL);
3094         g_return_val_if_fail(parent != NULL, NULL);
3095         g_return_val_if_fail(name != NULL, NULL);
3096
3097         if (to_number(name) > 0) {
3098                 gchar *cached_msg = imap_get_cached_filename(parent, to_number(name));
3099                 if (is_file_exist(cached_msg)) {
3100                         if (claws_unlink(cached_msg) != 0) {
3101                                 return NULL;
3102                         }
3103                 }
3104         }
3105
3106         debug_print("getting session...\n");
3107         session = imap_session_get(folder);
3108         if (!session) {
3109                 return NULL;
3110         }
3111
3112         if (!folder_item_parent(parent) && strcmp(name, "INBOX") == 0) {
3113                 dirpath = g_strdup(name);
3114         }else if (parent->path)
3115                 dirpath = g_strconcat(parent->path, "/", name, NULL);
3116         else if ((p = strchr(name, '/')) != NULL && *(p + 1) != '\0')
3117                 dirpath = g_strdup(name);
3118         else if (folder->account->imap_dir && *folder->account->imap_dir) {
3119                 gchar *imap_dir;
3120
3121                 Xstrdup_a(imap_dir, folder->account->imap_dir, {return NULL;});
3122                 strtailchomp(imap_dir, '/');
3123                 dirpath = g_strconcat(imap_dir, "/", name, NULL);
3124         } else
3125                 dirpath = g_strdup(name);
3126
3127
3128
3129         /* keep trailing directory separator to create a folder that contains
3130            sub folder */
3131         imap_path = imap_utf8_to_modified_utf7(dirpath, FALSE);
3132
3133         strtailchomp(dirpath, '/');
3134         Xstrdup_a(new_name, name, {
3135                 g_free(dirpath);
3136                 g_free(imap_path);
3137                 return NULL;});
3138
3139         separator = imap_get_path_separator(session, IMAP_FOLDER(folder), imap_path, &ok);
3140         if (is_fatal(ok)) {
3141                 g_free(imap_path);
3142                 return NULL;
3143         }
3144         imap_path_separator_subst(imap_path, separator);
3145         /* remove trailing / for display */
3146         strtailchomp(new_name, '/');
3147
3148         if (strcmp(dirpath, "INBOX") != 0) {
3149                 GPtrArray *argbuf;
3150                 int r;
3151                 clist * lep_list;
3152
3153                 argbuf = g_ptr_array_new();
3154                 r = imap_threaded_list(folder, "", imap_path, &lep_list);
3155                 if (r != MAILIMAP_NO_ERROR) {
3156                         imap_handle_error(SESSION(session), NULL, r);
3157                         log_warning(LOG_PROTOCOL, _("can't create mailbox: LIST failed\n"));
3158                         g_free(imap_path);
3159                         g_free(dirpath);
3160                         ptr_array_free_strings(argbuf);
3161                         g_ptr_array_free(argbuf, TRUE);
3162                         return NULL;
3163                 }
3164
3165                 if (clist_count(lep_list) > 0)
3166                         exist = TRUE;
3167                 mailimap_list_result_free(lep_list);
3168                 lep_list = NULL;
3169                 if (!exist) {
3170                         ok = imap_cmd_create(session, imap_path);
3171                         if (ok != MAILIMAP_NO_ERROR) {
3172                                 log_warning(LOG_PROTOCOL, _("can't create mailbox\n"));
3173                                 g_free(imap_path);
3174                                 g_free(dirpath);
3175                                 return NULL;
3176                         }
3177                         r = imap_threaded_list(folder, "", imap_path, &lep_list);
3178                         if (r == MAILIMAP_NO_ERROR) {
3179                                 GSList *item_list = imap_list_from_lep(IMAP_FOLDER(folder),
3180                                                lep_list, dirpath, TRUE);
3181                                 if (item_list) {
3182                                         FolderItem *cur_item = FOLDER_ITEM(item_list->data);
3183                                         no_select = cur_item->no_select;
3184                                         no_sub = cur_item->no_sub;
3185                                         g_slist_free(item_list);
3186                                 }
3187                                 mailimap_list_result_free(lep_list);
3188                         } else {
3189                                 imap_handle_error(SESSION(session), NULL, r);
3190                         }
3191                 }
3192                 imap_threaded_subscribe(folder, imap_path, TRUE);
3193         } else {
3194                 clist *lep_list;
3195                 int r;
3196                 /* just get flags */
3197                 r = imap_threaded_list(folder, "", "INBOX", &lep_list);
3198                 if (r == MAILIMAP_NO_ERROR) {
3199                         GSList *item_list = imap_list_from_lep(IMAP_FOLDER(folder),
3200                                        lep_list, dirpath, TRUE);
3201                         if (item_list) {
3202                                 FolderItem *cur_item = FOLDER_ITEM(item_list->data);
3203                                 no_select = cur_item->no_select;
3204                                 no_sub = cur_item->no_sub;
3205                                 g_slist_free(item_list);
3206                         }
3207                         mailimap_list_result_free(lep_list);
3208                 } else {
3209                         imap_handle_error(SESSION(session), NULL, r);
3210                 }
3211         }
3212
3213         new_item = folder_item_new(folder, new_name, dirpath);
3214         new_item->no_select = no_select;
3215         new_item->no_sub = no_sub;
3216         folder_item_append(parent, new_item);
3217         g_free(imap_path);
3218         g_free(dirpath);
3219
3220         dirpath = folder_item_get_path(new_item);
3221         if (!is_dir_exist(dirpath))
3222                 make_dir_hier(dirpath);
3223         g_free(dirpath);
3224
3225         if (exist) {
3226                 /* folder existed, scan it */
3227                 imap_scan_required(folder, new_item);
3228                 folder_item_scan_full(new_item, FALSE);
3229         }
3230
3231         return new_item;
3232 }
3233
3234 static gint imap_rename_folder(Folder *folder, FolderItem *item,
3235                                const gchar *name)
3236 {
3237         gchar *dirpath;
3238         gchar *newpath;
3239         gchar *real_oldpath;
3240         gchar *real_newpath;
3241         gchar *paths[2];
3242         gchar *old_cache_dir;
3243         gchar *new_cache_dir;
3244         IMAPSession *session;
3245         gchar separator;
3246         gint ok = MAILIMAP_NO_ERROR;
3247         gint exists, recent, unseen;
3248         guint32 uid_validity;
3249
3250         g_return_val_if_fail(folder != NULL, -1);
3251         g_return_val_if_fail(item != NULL, -1);
3252         g_return_val_if_fail(item->path != NULL, -1);
3253         g_return_val_if_fail(name != NULL, -1);
3254
3255         debug_print("getting session...\n");
3256         session = imap_session_get(folder);
3257         if (!session) {
3258                 return -1;
3259         }
3260
3261         if (strchr(name, imap_get_path_separator(session, IMAP_FOLDER(folder), item->path, &ok)) != NULL ||
3262                 is_fatal(ok)) {
3263                 g_warning(_("New folder name must not contain the namespace "
3264                             "path separator"));
3265                 return -1;
3266         }
3267
3268         real_oldpath = imap_get_real_path(session, IMAP_FOLDER(folder), item->path, &ok);
3269         if (is_fatal(ok)) {
3270                 g_free(real_oldpath);
3271                 return -1;
3272         }
3273
3274         g_free(session->mbox);
3275         session->mbox = NULL;
3276         session->exists = 0;
3277         session->recent = 0;
3278         session->expunge = 0;
3279         ok = imap_cmd_examine(session, "INBOX",
3280                               &exists, &recent, &unseen, &uid_validity, FALSE);
3281         if (ok != MAILIMAP_NO_ERROR) {
3282                 g_free(real_oldpath);
3283                 return -1;
3284         }
3285
3286         separator = imap_get_path_separator(session, IMAP_FOLDER(folder), item->path, &ok);
3287         if (is_fatal(ok)) {
3288                 g_free(real_oldpath);
3289                 return -1;
3290         }
3291         if (strchr(item->path, G_DIR_SEPARATOR)) {
3292                 dirpath = g_path_get_dirname(item->path);
3293                 newpath = g_strconcat(dirpath, G_DIR_SEPARATOR_S, name, NULL);
3294                 g_free(dirpath);
3295         } else
3296                 newpath = g_strdup(name);
3297