Use correct dir separator for "Scanning folder ..." in statusbar.
[claws.git] / src / imap.c
index 8c9df8509ef63f959991a0a43ad1f68db1e95997..a38c8d09cb119358ca2b2312027eea55c8c808aa 100644 (file)
@@ -1,6 +1,6 @@
 /*
- * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
- * Copyright (C) 1999-2012 Hiroyuki Yamamoto and the Claws Mail team
+ * Claws Mail -- a GTK+ based, lightweight, and fast e-mail client
+ * Copyright (C) 1999-2016 Hiroyuki Yamamoto and the Claws Mail team
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -14,7 +14,6 @@
  *
  * You should have received a copy of the GNU General Public License
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
- * 
  */
 
 #ifdef HAVE_CONFIG_H
@@ -59,7 +58,6 @@
 #include "prefs_account.h"
 #include "codeconv.h"
 #include "md5.h"
-#include "base64.h"
 #include "utils.h"
 #include "prefs_common.h"
 #include "inputdialog.h"
@@ -72,6 +70,7 @@
 #include "account.h"
 #include "tags.h"
 #include "main.h"
+#include "passwordstore.h"
 
 typedef struct _IMAPFolder     IMAPFolder;
 typedef struct _IMAPSession    IMAPSession;
@@ -95,6 +94,8 @@ struct _IMAPFolder
        gchar last_seen_separator;
        guint refcnt;
        guint max_set_size;
+       gchar *search_charset;
+       gboolean search_charset_supported;
 };
 
 struct _IMAPSession
@@ -122,6 +123,7 @@ struct _IMAPSession
        gboolean busy;
        gboolean cancelled;
        gboolean sens_update_block;
+       gboolean do_destroy;
 };
 
 struct _IMAPNameSpace
@@ -285,6 +287,12 @@ static FolderItem *imap_create_special_folder
                                         const gchar            *name);
 
 static gint imap_do_copy_msgs          (Folder         *folder,
+                                        FolderItem     *dest,
+                                        MsgInfoList    *msglist,
+                                        GHashTable     *relation,
+                                        gboolean        same_dest_ok);
+
+static gint imap_do_remove_msgs                (Folder         *folder,
                                         FolderItem     *dest,
                                         MsgInfoList    *msglist,
                                         GHashTable     *relation);
@@ -542,6 +550,24 @@ static void unlock_session(IMAPSession *session)
        }
 }
 
+static gboolean imap_ping(gpointer data)
+{
+       Session *session = (Session *)data;
+       IMAPSession *imap_session = IMAP_SESSION(session);
+       int r;
+
+       if (session->state != SESSION_READY)
+               return FALSE;
+       if (imap_session->busy || !imap_session->authenticated)
+               return TRUE;
+       
+       lock_session(imap_session);
+       r = imap_cmd_noop(imap_session);
+       unlock_session(imap_session);
+
+       return r == MAILIMAP_NO_ERROR;
+}
+
 static void imap_disc_session_destroy(IMAPSession *session)
 {
        RemoteFolder *rfolder = NULL;
@@ -558,6 +584,14 @@ static void imap_disc_session_destroy(IMAPSession *session)
        SESSION(session)->sock = NULL;
 }
 
+static void imap_safe_destroy(IMAPSession *session)
+{
+       if (!session->busy)
+               session_destroy(SESSION(session));
+       else
+               session->do_destroy = TRUE;
+}
+
 static gboolean is_fatal(int libetpan_errcode)
 {
        switch(libetpan_errcode) {
@@ -584,134 +618,134 @@ static void imap_handle_error(Session *session, const gchar *server, int libetpa
        case MAILIMAP_NO_ERROR:
                return;
        case MAILIMAP_NO_ERROR_AUTHENTICATED:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: authenticated\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("authenticated"), "\n", NULL), session_server);
                break;
        case MAILIMAP_NO_ERROR_NON_AUTHENTICATED:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: not authenticated\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("not authenticated"), "\n", NULL), session_server);
                break;
        case MAILIMAP_ERROR_BAD_STATE:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: bad state\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("bad state"), "\n", NULL), session_server);
                break;
        case MAILIMAP_ERROR_STREAM:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: stream error\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("stream error"), "\n", NULL), session_server);
                break;
        case MAILIMAP_ERROR_PARSE:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: parse error "
-                                           "(very probably non-RFC compliance from the server)\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("parse error "
+                                           "(very probably non-RFC compliance from the server)"), "\n", NULL), session_server);
                break;
        case MAILIMAP_ERROR_CONNECTION_REFUSED:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: connection refused\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("connection refused"), "\n", NULL), session_server);
                break;
        case MAILIMAP_ERROR_MEMORY:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: memory error\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("memory error"), "\n", NULL), session_server);
                break;
        case MAILIMAP_ERROR_FATAL:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: fatal error\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("fatal error"), "\n", NULL), session_server);
                break;
        case MAILIMAP_ERROR_PROTOCOL:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: protocol error"
-                                           "(very probably non-RFC compliance from the server)\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("protocol error "
+                                           "(very probably non-RFC compliance from the server)"), "\n", NULL), session_server);
                break;
        case MAILIMAP_ERROR_DONT_ACCEPT_CONNECTION:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: connection not accepted\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("connection not accepted"), "\n", NULL), session_server);
                break;
        case MAILIMAP_ERROR_APPEND:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: APPEND error\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("APPEND error"), "\n", NULL), session_server);
                break;
        case MAILIMAP_ERROR_NOOP:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: NOOP error\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("NOOP error"), "\n", NULL), session_server);
                break;
        case MAILIMAP_ERROR_LOGOUT:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: LOGOUT error\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("LOGOUT error"), "\n", NULL), session_server);
                break;
        case MAILIMAP_ERROR_CAPABILITY:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: CAPABILITY error\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("CAPABILITY error"), "\n", NULL), session_server);
                break;
        case MAILIMAP_ERROR_CHECK:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: CHECK error\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("CHECK error"), "\n", NULL), session_server);
                break;
        case MAILIMAP_ERROR_CLOSE:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: CLOSE error\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("CLOSE error"), "\n", NULL), session_server);
                break;
        case MAILIMAP_ERROR_EXPUNGE:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: EXPUNGE error\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("EXPUNGE error"), "\n", NULL), session_server);
                break;
        case MAILIMAP_ERROR_COPY:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: COPY error\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("COPY error"), "\n", NULL), session_server);
                break;
        case MAILIMAP_ERROR_UID_COPY:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: UID COPY error\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("UID COPY error"), "\n", NULL), session_server);
                break;
        case MAILIMAP_ERROR_CREATE:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: CREATE error\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("CREATE error"), "\n", NULL), session_server);
                break;
        case MAILIMAP_ERROR_DELETE:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: DELETE error\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("DELETE error"), "\n", NULL), session_server);
                break;
        case MAILIMAP_ERROR_EXAMINE:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: EXAMINE error\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("EXAMINE error"), "\n", NULL), session_server);
                break;
        case MAILIMAP_ERROR_FETCH:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: FETCH error\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("FETCH error"), "\n", NULL), session_server);
                break;
        case MAILIMAP_ERROR_UID_FETCH:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: UID FETCH error\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("UID FETCH error"), "\n", NULL), session_server);
                break;
        case MAILIMAP_ERROR_LIST:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: LIST error\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("LIST error"), "\n", NULL), session_server);
                break;
        case MAILIMAP_ERROR_LOGIN:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: LOGIN error\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("LOGIN error"), "\n", NULL), session_server);
                break;
        case MAILIMAP_ERROR_LSUB:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: LSUB error\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("LSUB error"), "\n", NULL), session_server);
                break;
        case MAILIMAP_ERROR_RENAME:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: RENAME error\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("RENAME error"), "\n", NULL), session_server);
                break;
        case MAILIMAP_ERROR_SEARCH:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: SEARCH error\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("SEARCH error"), "\n", NULL), session_server);
                break;
        case MAILIMAP_ERROR_UID_SEARCH:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: UID SEARCH error\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("UID SEARCH error"), "\n", NULL), session_server);
                break;
        case MAILIMAP_ERROR_SELECT:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: SELECT error\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("SELECT error"), "\n", NULL), session_server);
                break;
        case MAILIMAP_ERROR_STATUS:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: STATUS error\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("STATUS error"), "\n", NULL), session_server);
                break;
        case MAILIMAP_ERROR_STORE:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: STORE error\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("STORE error"), "\n", NULL), session_server);
                break;
        case MAILIMAP_ERROR_UID_STORE:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: UID STORE error\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("UID STORE error"), "\n", NULL), session_server);
                break;
        case MAILIMAP_ERROR_SUBSCRIBE:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: SUBSCRIBE error\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("SUBSCRIBE error"), "\n", NULL), session_server);
                break;
        case MAILIMAP_ERROR_UNSUBSCRIBE:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: UNSUBSCRIBE error\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("UNSUBSCRIBE error"), "\n", NULL), session_server);
                break;
        case MAILIMAP_ERROR_STARTTLS:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: STARTTLS error\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("STARTTLS error"), "\n", NULL), session_server);
                break;
        case MAILIMAP_ERROR_INVAL:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: INVAL error\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("INVAL error"), "\n", NULL), session_server);
                break;
        case MAILIMAP_ERROR_EXTENSION:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: EXTENSION error\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("EXTENSION error"), "\n", NULL), session_server);
                break;
        case MAILIMAP_ERROR_SASL:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: SASL error\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("SASL error"), "\n", NULL), session_server);
                break;
 #ifdef USE_GNUTLS
        case MAILIMAP_ERROR_SSL:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: SSL error\n"), session_server);
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("SSL error"), "\n", NULL), session_server);
                break;
 #endif
        default:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: Unknown error [%d]\n"),
+               log_warning(LOG_PROTOCOL, g_strconcat(_("IMAP error on %s:"), " ", _("Unknown error [%d]"), "\n", NULL),
                        session_server, libetpan_errcode);
                break;
        }
@@ -739,7 +773,9 @@ static void imap_folder_destroy(Folder *folder)
 {
        while (imap_folder_get_refcnt(folder) > 0)
                gtk_main_iteration();
-       
+
+       g_free(IMAP_FOLDER(folder)->search_charset);
+
        folder_remote_folder_destroy(REMOTE_FOLDER(folder));
        imap_done(folder);
 }
@@ -749,6 +785,8 @@ static void imap_folder_init(Folder *folder, const gchar *name,
 {
        folder_remote_folder_init((Folder *)folder, name, path);
        IMAP_FOLDER(folder)->max_set_size = IMAP_SET_MAX_COUNT;
+       IMAP_FOLDER(folder)->search_charset_supported = TRUE;
+       IMAP_FOLDER(folder)->search_charset = g_strdup(conv_get_locale_charset_str_no_utf8());
 }
 
 static FolderItem *imap_folder_item_new(Folder *folder)
@@ -797,12 +835,12 @@ static int imap_get_capabilities(IMAPSession *session)
 {
        struct mailimap_capability_data *capabilities = NULL;
        clistiter *cur;
-       int result = -1;
+       int result;
 
        if (session->capability != NULL)
                return MAILIMAP_NO_ERROR;
 
-       capabilities = imap_threaded_capability(session->folder, &result);
+       result = imap_threaded_capability(session->folder, &capabilities);
 
        if (result != MAILIMAP_NO_ERROR) {
                return result;
@@ -860,9 +898,18 @@ static gint imap_auth(IMAPSession *session, const gchar *user, const gchar *pass
        case IMAP_AUTH_DIGEST_MD5:
                ok = imap_cmd_login(session, user, pass, "DIGEST-MD5");
                break;
+       case IMAP_AUTH_SCRAM_SHA1:
+               ok = imap_cmd_login(session, user, pass, "SCRAM-SHA-1");
+               break;
+       case IMAP_AUTH_PLAIN:
+               ok = imap_cmd_login(session, user, pass, "PLAIN");
+               break;
        case IMAP_AUTH_LOGIN:
                ok = imap_cmd_login(session, user, pass, "LOGIN");
                break;
+       case IMAP_AUTH_PLAINTEXT:
+               ok = imap_cmd_login(session, user, pass, "plaintext");
+               break;
        case IMAP_AUTH_GSSAPI:
                ok = imap_cmd_login(session, user, pass, "GSSAPI");
                break;
@@ -871,21 +918,31 @@ static gint imap_auth(IMAPSession *session, const gchar *user, const gchar *pass
                                "\t ANONYMOUS %d\n"
                                "\t CRAM-MD5 %d\n"
                                "\t DIGEST-MD5 %d\n"
+                               "\t SCRAM-SHA-1 %d\n"
+                               "\t PLAIN %d\n"
                                "\t LOGIN %d\n"
                                "\t GSSAPI %d\n", 
                        imap_has_capability(session, "ANONYMOUS"),
                        imap_has_capability(session, "CRAM-MD5"),
                        imap_has_capability(session, "DIGEST-MD5"),
+                       imap_has_capability(session, "SCRAM-SHA-1"),
+                       imap_has_capability(session, "PLAIN"),
                        imap_has_capability(session, "LOGIN"),
                        imap_has_capability(session, "GSSAPI"));
                if (imap_has_capability(session, "CRAM-MD5"))
                        ok = imap_cmd_login(session, user, pass, "CRAM-MD5");
                if (ok == MAILIMAP_ERROR_LOGIN && imap_has_capability(session, "DIGEST-MD5"))
                        ok = imap_cmd_login(session, user, pass, "DIGEST-MD5");
+               if (ok == MAILIMAP_ERROR_LOGIN && imap_has_capability(session, "SCRAM-SHA-1"))
+                       ok = imap_cmd_login(session, user, pass, "SCRAM-SHA-1");
+               if (ok == MAILIMAP_ERROR_LOGIN && imap_has_capability(session, "PLAIN"))
+                       ok = imap_cmd_login(session, user, pass, "PLAIN");
+               if (ok == MAILIMAP_ERROR_LOGIN && imap_has_capability(session, "LOGIN"))
+                       ok = imap_cmd_login(session, user, pass, "LOGIN");
                if (ok == MAILIMAP_ERROR_LOGIN && imap_has_capability(session, "GSSAPI"))
                        ok = imap_cmd_login(session, user, pass, "GSSAPI");
-               if (ok == MAILIMAP_ERROR_LOGIN) /* we always try LOGIN before giving up */
-                       ok = imap_cmd_login(session, user, pass, "LOGIN");
+               if (ok == MAILIMAP_ERROR_LOGIN) /* we always try plaintext login before giving up */
+                       ok = imap_cmd_login(session, user, pass, "plaintext");
        }
 
        if (ok == MAILIMAP_NO_ERROR)
@@ -903,6 +960,24 @@ static gint imap_auth(IMAPSession *session, const gchar *user, const gchar *pass
                                     "DIGEST-MD5 SASL plugin is installed.");
                } 
 
+               if (type == IMAP_AUTH_SCRAM_SHA1) {
+                       ext_info = _("\n\nSCRAM-SHA-1 logins only work if libetpan has been "
+                                    "compiled with SASL support and the "
+                                    "SCRAM SASL plugin is installed.");
+               }
+
+               if (type == IMAP_AUTH_PLAIN) {
+                       ext_info = _("\n\nPLAIN logins only work if libetpan has been "
+                                    "compiled with SASL support and the "
+                                    "PLAIN SASL plugin is installed.");
+               }
+
+               if (type == IMAP_AUTH_LOGIN) {
+                       ext_info = _("\n\nLOGIN logins only work if libetpan has been "
+                                    "compiled with SASL support and the "
+                                    "LOGIN SASL plugin is installed.");
+               }
+
                if (time(NULL) - last_login_err > 10) {
                        if (!prefs_common.no_recv_err_panel) {
                                alertpanel_error_log(_("Connection to %s failed: "
@@ -930,7 +1005,7 @@ static IMAPSession *imap_reconnect_if_possible(Folder *folder, IMAPSession *sess
                log_warning(LOG_PROTOCOL, _("Connecting to %s failed"),
                            folder->account->recv_server);
                SESSION(session)->sock = NULL;
-               session_destroy(SESSION(session));
+               imap_safe_destroy(session);
                session = NULL;
        } else {
                rfolder->session = NULL;
@@ -942,7 +1017,7 @@ static IMAPSession *imap_reconnect_if_possible(Folder *folder, IMAPSession *sess
                            folder->account->recv_server);
                SESSION(session)->state = SESSION_DISCONNECTED;
                SESSION(session)->sock = NULL;
-               session_destroy(SESSION(session));
+               imap_safe_destroy(session);
                /* Clear folders session to make imap_session_get create
                   a new session, because of rfolder->session == NULL
                   it will not try to reconnect again and so avoid an
@@ -972,11 +1047,21 @@ static IMAPSession *imap_session_get(Folder *folder)
                return NULL;
        }
 
+       /* check for deferred destroy */
+       if (rfolder->session != NULL) {
+               session = IMAP_SESSION(rfolder->session);
+               if (!session->busy && session->do_destroy) {
+                       rfolder->session = NULL;
+                       imap_safe_destroy(session);
+                       session = NULL;
+               }
+       }
+
        /* Make sure we have a session */
        if (rfolder->session != NULL && rfolder->session->state != SESSION_DISCONNECTED) {
                session = IMAP_SESSION(rfolder->session);
        } else if (rfolder->session != NULL && rfolder->session->state == SESSION_DISCONNECTED) {
-               session_destroy(SESSION(rfolder->session));
+               imap_safe_destroy(IMAP_SESSION(rfolder->session));
                rfolder->session = NULL;
                goto new_conn;
        } else if (rfolder->connecting) {
@@ -1004,10 +1089,10 @@ new_conn:
                rfolder->session = NULL;
                if (!is_fatal(r)) {
                        imap_threaded_disconnect(session->folder);
-                       SESSION(session)->state = SESSION_DISCONNECTED;
-                       SESSION(session)->sock = NULL;
-                       session_destroy(SESSION(session));
                }
+               SESSION(session)->state = SESSION_DISCONNECTED;
+               SESSION(session)->sock = NULL;
+               imap_safe_destroy(session);
                rfolder->last_failure = time(NULL);
                rfolder->connecting = FALSE;
                return NULL;
@@ -1023,13 +1108,18 @@ new_conn:
         * successfully sent. -- mbp */
        if ((time(NULL) - SESSION(session)->last_access_time > SESSION_TIMEOUT_INTERVAL) || session->cancelled) {
                /* verify that the session is still alive */
-               if ((r = imap_cmd_noop(session)) != MAILIMAP_NO_ERROR) {
+               r = imap_cmd_noop(session);
+
+               if (r != MAILIMAP_NO_ERROR) {
                        debug_print("disconnected!\n");
                        if (!is_fatal(r))
                                session = imap_reconnect_if_possible(folder, session);
                        else {
                                rfolder->session = NULL;
                                rfolder->connecting = FALSE;
+                               SESSION(session)->state = SESSION_DISCONNECTED;
+                               SESSION(session)->sock = NULL;
+                               imap_safe_destroy(session);
                                session = imap_session_get(folder);
                        }
                }
@@ -1165,7 +1255,7 @@ static IMAPSession *imap_session_new(Folder * folder,
                        log_warning(LOG_PROTOCOL, _("Can't start TLS session.\n"));
                        if (!is_fatal(ok)) {
                                SESSION(session)->sock = NULL;
-                               session_destroy(SESSION(session));
+                               imap_safe_destroy(session);
                        }
                        return NULL;
                }
@@ -1179,6 +1269,8 @@ static IMAPSession *imap_session_new(Folder * folder,
        log_message(LOG_PROTOCOL, "IMAP connection is %s-authenticated\n",
                    (session->authenticated) ? "pre" : "un");
        
+       session_register_ping(SESSION(session), imap_ping);
+
        return session;
 }
 
@@ -1189,7 +1281,15 @@ static gint imap_session_authenticate(IMAPSession *session,
        gboolean failed = FALSE;
        gint ok = MAILIMAP_NO_ERROR;
        g_return_val_if_fail(account->userid != NULL, MAILIMAP_ERROR_BAD_STATE);
-       acc_pass = account->passwd;
+
+       if (password_get(account->userid, account->recv_server, "imap",
+                        SESSION(session)->port, &pass)) {
+               Xstrdup_a(acc_pass, pass, {g_free(pass); return MAILIMAP_NO_ERROR;});
+               g_free(pass);
+       } else {
+               acc_pass = passwd_store_get_account(account->account_id,
+                               PWS_ACCOUNT_RECV);
+       }
 try_again:
        pass = acc_pass;
        if (!pass && account->imap_auth_type != IMAP_AUTH_ANON && account->imap_auth_type != IMAP_AUTH_GSSAPI) {
@@ -1197,8 +1297,9 @@ try_again:
                tmp_pass = input_dialog_query_password_keep(account->recv_server, 
                                                            account->userid,
                                                            &(account->session_passwd));
-               if (!tmp_pass)
+               if (!tmp_pass) {
                        return MAILIMAP_NO_ERROR;
+               }
                Xstrdup_a(pass, tmp_pass, {g_free(tmp_pass); return MAILIMAP_NO_ERROR;});
                g_free(tmp_pass);
        } else if (account->imap_auth_type == IMAP_AUTH_ANON || account->imap_auth_type == IMAP_AUTH_GSSAPI) {
@@ -1207,7 +1308,11 @@ try_again:
        if ((ok = imap_auth(session, account->userid, pass, account->imap_auth_type)) != MAILIMAP_NO_ERROR) {
                
                if (!failed && !is_fatal(ok)) {
-                       acc_pass = NULL;
+                       if (acc_pass != NULL) {
+                               memset(acc_pass, 0, strlen(acc_pass));
+                               g_free(acc_pass);
+                               acc_pass = NULL;
+                       }
                        failed = TRUE;
                        if (account->session_passwd != NULL) {
                                g_free(account->session_passwd);
@@ -1220,11 +1325,20 @@ try_again:
                                mainwindow_show_error();
                        } else
                                alertpanel_error_log(_("Couldn't login to IMAP server %s."), account->recv_server);
-               }               
+               }
+
+               if (acc_pass != NULL) {
+                       g_free(acc_pass);
+                       memset(acc_pass, 0, strlen(acc_pass));
+               }
 
                return ok;
        } 
 
+       if (acc_pass) {
+               memset(acc_pass, 0, strlen(acc_pass));
+               g_free(acc_pass);
+       }
        statuswindow_pop_all();
        session->authenticated = TRUE;
        return MAILIMAP_NO_ERROR;
@@ -1267,20 +1381,38 @@ static guint get_file_size_with_crs(const gchar *filename)
        return cnt;
 }
 
-static void imap_remove_cached_msg(Folder *folder, FolderItem *item, MsgInfo *msginfo)
+static gchar *imap_get_cached_filename(FolderItem *item, guint msgnum)
 {
        gchar *path, *filename;
 
+       cm_return_val_if_fail(item != NULL, NULL);
+
        path = folder_item_get_path(item);
 
        if (!is_dir_exist(path)) {
                g_free(path);
-               return;
+               return NULL;
        }
 
-       filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(msginfo->msgnum), NULL);
+       filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(msgnum), NULL);
+
+       if (is_dir_exist(filename)) {
+               g_free(filename);
+               filename = g_strconcat(path, G_DIR_SEPARATOR_S, ".", itos(msgnum), NULL);
+       }
        g_free(path);
 
+       return filename;
+}
+
+static void imap_remove_cached_msg(Folder *folder, FolderItem *item, MsgInfo *msginfo)
+{
+       gchar *filename;
+
+       filename = imap_get_cached_filename(item, msginfo->msgnum);
+
+       cm_return_if_fail(filename != NULL);
+
        if (is_file_exist(filename)) {
                claws_unlink(filename);
        }
@@ -1416,11 +1548,16 @@ static gchar *imap_fetch_msg_full(Folder *folder, FolderItem *item, gint uid,
                return NULL;
 
        path = folder_item_get_path(item);
-       if (!is_dir_exist(path))
+       if (!is_dir_exist(path)) {
+               if(is_file_exist(path))
+                       claws_unlink(path);
                make_dir_hier(path);
-       filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(uid), NULL);
+       }
        g_free(path);
+
+       filename = imap_get_cached_filename(item, uid);
        debug_print("trying to fetch cached %s\n", filename);
+
        if (is_file_exist(filename)) {
                /* see whether the local file represents the whole message
                 * or not. As the IMAP server reports size with \r chars,
@@ -1435,13 +1572,14 @@ static gchar *imap_fetch_msg_full(Folder *folder, FolderItem *item, gint uid,
                if (!cached || !MSG_IS_FULLY_CACHED(cached->flags)) {
                        have_size = get_file_size_with_crs(filename);
                        if (cached && (cached->size <= have_size || !body)) {
-                               procmsg_msginfo_free(cached);
                                ok = file_strip_crs(filename);
                                if (ok == 0 && cached && cached->size <= have_size) {
                                        /* we have it all and stripped */
-                                       debug_print("...fully cached in fact; setting flag.\n");
+                                       debug_print("...fully cached in fact (%u/%zd); setting flag.\n",
+                                                       have_size, cached->size);
                                        procmsg_msginfo_set_flags(cached, MSG_FULLY_CACHED, 0);
                                }
+                               procmsg_msginfo_free(&cached);
                                return filename;
                        } else if (!cached && time(NULL) - get_file_mtime(filename) < 60) {
                                debug_print("message not cached and file recent, considering file complete\n");
@@ -1449,18 +1587,18 @@ static gchar *imap_fetch_msg_full(Folder *folder, FolderItem *item, gint uid,
                                if (ok == 0)
                                        return filename;
                        } else {
-                               procmsg_msginfo_free(cached);
+                               procmsg_msginfo_free(&cached);
                        }
                }
                if (cached && MSG_IS_FULLY_CACHED(cached->flags)) {
-                       procmsg_msginfo_free(cached);
+                       procmsg_msginfo_free(&cached);
                        return filename;
                }
        } else {
                MsgInfo *cached = msgcache_get_msg(item->cache,uid);
                if (cached) {
                        procmsg_msginfo_unset_flags(cached, MSG_FULLY_CACHED, 0);
-                       procmsg_msginfo_free(cached);
+                       procmsg_msginfo_free(&cached);
                }
        }
 
@@ -1478,7 +1616,7 @@ static gchar *imap_fetch_msg_full(Folder *folder, FolderItem *item, gint uid,
        ok = imap_select(session, IMAP_FOLDER(folder), item,
                         NULL, NULL, NULL, NULL, NULL, FALSE);
        if (ok != MAILIMAP_NO_ERROR) {
-               g_warning("can't select mailbox %s\n", item->path);
+               g_warning("can't select mailbox %s", item->path);
                g_free(filename);
                return NULL;
        }
@@ -1489,7 +1627,7 @@ static gchar *imap_fetch_msg_full(Folder *folder, FolderItem *item, gint uid,
        ok = imap_cmd_fetch(session, (guint32)uid, filename, headers, body);
 
        if (ok != MAILIMAP_NO_ERROR) {
-               g_warning("can't fetch message %d\n", uid);
+               g_warning("can't fetch message %d", uid);
                g_free(filename);
                return NULL;
        }
@@ -1503,13 +1641,13 @@ static gchar *imap_fetch_msg_full(Folder *folder, FolderItem *item, gint uid,
                MsgInfo *cached = msgcache_get_msg(item->cache,uid);
                if (cached) {
                        procmsg_msginfo_set_flags(cached, MSG_FULLY_CACHED, 0);
-                       procmsg_msginfo_free(cached);
+                       procmsg_msginfo_free(&cached);
                }
        } else if (ok == -1) {
                MsgInfo *cached = msgcache_get_msg(item->cache,uid);
                if (cached) {
                        procmsg_msginfo_unset_flags(cached, MSG_FULLY_CACHED, 0);
-                       procmsg_msginfo_free(cached);
+                       procmsg_msginfo_free(&cached);
                }
        }
        return filename;
@@ -1517,7 +1655,7 @@ static gchar *imap_fetch_msg_full(Folder *folder, FolderItem *item, gint uid,
 
 static gboolean imap_is_msg_fully_cached(Folder *folder, FolderItem *item, gint uid)
 {
-       gchar *path, *filename;
+       gchar *filename;
        guint size = 0;
        MsgInfo *cached = msgcache_get_msg(item->cache,uid);
        
@@ -1525,15 +1663,12 @@ static gboolean imap_is_msg_fully_cached(Folder *folder, FolderItem *item, gint
                return FALSE;
 
        if (MSG_IS_FULLY_CACHED(cached->flags)) {
-               procmsg_msginfo_free(cached);
+               procmsg_msginfo_free(&cached);
                return TRUE;
        }
-       path = folder_item_get_path(item);
-       if (!is_dir_exist(path))
-               return FALSE;
 
-       filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(uid), NULL);
-       g_free(path);
+       filename = imap_get_cached_filename(item, uid);
+
        if (is_file_exist(filename)) {
                if (cached && cached->total_size == cached->size) {
                        /* fast path */
@@ -1542,16 +1677,17 @@ static gboolean imap_is_msg_fully_cached(Folder *folder, FolderItem *item, gint
                        return TRUE;
                }
                size = get_file_size_with_crs(filename);
-               g_free(filename);
        }
+       g_free(filename);
+       debug_print("msg %d cached, has size %d, full should be %zd.\n", uid, size, cached->size);
        if (cached && size >= cached->size) {
                cached->total_size = cached->size;
                procmsg_msginfo_set_flags(cached, MSG_FULLY_CACHED, 0);
-               procmsg_msginfo_free(cached);
+               procmsg_msginfo_free(&cached);
                return TRUE;
        }
        if (cached)
-               procmsg_msginfo_free(cached);
+               procmsg_msginfo_free(&cached);
        return FALSE;   
 }
 
@@ -1611,8 +1747,10 @@ static gint imap_add_msgs(Folder *folder, FolderItem *dest, GSList *file_list,
                return -1;
        }
        destdir = imap_get_real_path(session, IMAP_FOLDER(folder), dest->path, &ok);
-       if (is_fatal(ok))
+       if (is_fatal(ok)) {
+               g_free(destdir);
                return -1;
+       }
        statusbar_print_all(_("Adding messages..."));
        total = g_slist_length(file_list);
        for (cur = file_list; cur != NULL; cur = cur->next) {
@@ -1653,7 +1791,7 @@ static gint imap_add_msgs(Folder *folder, FolderItem *dest, GSList *file_list,
                                     &new_uid);
 
                if (ok != MAILIMAP_NO_ERROR) {
-                       g_warning("can't append message %s\n", real_file);
+                       g_warning("can't append message %s", real_file);
                        g_free(real_file);
                        g_free(destdir);
                        statusbar_progress_all(0,0,0);
@@ -1747,7 +1885,8 @@ static GSList *flatten_mailimap_set(struct mailimap_set * set)
        return result;
 }
 static gint imap_do_copy_msgs(Folder *folder, FolderItem *dest, 
-                             MsgInfoList *msglist, GHashTable *relation)
+                             MsgInfoList *msglist, GHashTable *relation,
+                             gboolean same_dest_ok)
 {
        FolderItem *src;
        gchar *destdir;
@@ -1771,8 +1910,8 @@ static gint imap_do_copy_msgs(Folder *folder, FolderItem *dest,
 
        msginfo = (MsgInfo *)msglist->data;
        src = msginfo->folder;
-       if (src == dest) {
-               g_warning("the src folder is identical to the dest.\n");
+       if (!same_dest_ok && src == dest) {
+               g_warning("the src folder is identical to the dest.");
                return -1;
        }
 
@@ -1809,8 +1948,10 @@ static gint imap_do_copy_msgs(Folder *folder, FolderItem *dest,
 
        destdir = imap_get_real_path(session, IMAP_FOLDER(folder), dest->path, &ok);
 
-       if (is_fatal(ok))
+       if (is_fatal(ok)) {
+               g_free(destdir);
                return ok;
+       }
 
        seq_list = imap_get_lep_set_from_msglist(IMAP_FOLDER(folder), msglist);
        uid_hash = g_hash_table_new(g_direct_hash, g_direct_equal);
@@ -1898,8 +2039,11 @@ static gint imap_do_copy_msgs(Folder *folder, FolderItem *dest,
                                if (!is_dir_exist(cache_path))
                                        make_dir_hier(cache_path);
                                if (is_file_exist(real_file) && is_dir_exist(cache_path)) {
-                                       copy_file(real_file, cache_file, TRUE);
-                                       debug_print("copied to cache: %s\n", cache_file);
+                                       if (copy_file(real_file, cache_file, TRUE) < 0)
+                                               debug_print("couldn't cache to %s: %s\n", cache_file,
+                                                           strerror(errno));
+                                       else
+                                               debug_print("copied to cache: %s\n", cache_file);
                                }
                                g_free(real_file);
                                g_free(cache_file);
@@ -1953,10 +2097,37 @@ static gint imap_copy_msgs(Folder *folder, FolderItem *dest,
        msginfo = (MsgInfo *)msglist->data;
        g_return_val_if_fail(msginfo->folder != NULL, -1);
 
-       ret = imap_do_copy_msgs(folder, dest, msglist, relation);
+       ret = imap_do_copy_msgs(folder, dest, msglist, relation, FALSE);
        return ret;
 }
 
+static gboolean imap_matcher_type_is_local(gint matchertype)
+{
+       switch (matchertype) {
+       case MATCHCRITERIA_FROM:
+       case MATCHCRITERIA_TO:
+       case MATCHCRITERIA_CC:
+       case MATCHCRITERIA_TO_OR_CC:
+       case MATCHCRITERIA_SUBJECT:
+       case MATCHCRITERIA_REFERENCES:
+       case MATCHCRITERIA_MESSAGEID:
+       case MATCHCRITERIA_INREPLYTO:
+       case MATCHCRITERIA_AGE_GREATER:
+       case MATCHCRITERIA_AGE_LOWER:
+       case MATCHCRITERIA_FORWARDED:
+       case MATCHCRITERIA_SPAM:
+       case MATCHCRITERIA_UNREAD:
+       case MATCHCRITERIA_NEW:
+       case MATCHCRITERIA_MARKED:
+       case MATCHCRITERIA_REPLIED:
+       case MATCHCRITERIA_DELETED:
+       case MATCHCRITERIA_SIZE_GREATER:
+       case MATCHCRITERIA_SIZE_SMALLER:
+       case MATCHCRITERIA_SIZE_EQUAL:
+               return TRUE;
+       }
+       return FALSE;
+}
 
 static IMAPSearchKey* search_make_key(MatcherProp* match, gboolean* is_all)
 {
@@ -1982,9 +2153,11 @@ static IMAPSearchKey* search_make_key(MatcherProp* match, gboolean* is_all)
                case MATCHCRITERIA_NOT_HEADER: invert = TRUE; matchertype = MATCHCRITERIA_HEADER; break;
                case MATCHCRITERIA_NOT_TAG: invert = TRUE; matchertype = MATCHCRITERIA_TAG; break;
                case MATCHCRITERIA_NOT_HEADERS_PART: invert = TRUE; matchertype = MATCHCRITERIA_HEADERS_PART; break;
+               case MATCHCRITERIA_NOT_HEADERS_CONT: invert = TRUE; matchertype = MATCHCRITERIA_HEADERS_CONT; break;
                case MATCHCRITERIA_NOT_MESSAGE: invert = TRUE; matchertype = MATCHCRITERIA_MESSAGE; break;
                case MATCHCRITERIA_NOT_BODY_PART: invert = TRUE; matchertype = MATCHCRITERIA_BODY_PART; break;
                case MATCHCRITERIA_NOT_TO_AND_NOT_CC: invert = TRUE; matchertype = MATCHCRITERIA_TO_OR_CC; break;
+               case MATCHCRITERIA_NOT_MESSAGEID: invert = TRUE; matchertype = MATCHCRITERIA_MESSAGEID; break;
                case MATCHCRITERIA_NOT_INREPLYTO: invert = TRUE; matchertype = MATCHCRITERIA_INREPLYTO; break;
                }
 
@@ -1994,28 +2167,8 @@ static IMAPSearchKey* search_make_key(MatcherProp* match, gboolean* is_all)
                 * has proven faster than IMAP search plus network roundtrips. once this changes,
                 * consider removing these exceptions.
                 */
-               switch (matchertype) {
-               case MATCHCRITERIA_FROM:
-               case MATCHCRITERIA_TO:
-               case MATCHCRITERIA_CC:
-               case MATCHCRITERIA_TO_OR_CC:
-               case MATCHCRITERIA_SUBJECT:
-               case MATCHCRITERIA_REFERENCES:
-               case MATCHCRITERIA_INREPLYTO:
-               case MATCHCRITERIA_AGE_GREATER:
-               case MATCHCRITERIA_AGE_LOWER:
-               case MATCHCRITERIA_FORWARDED:
-               case MATCHCRITERIA_SPAM:
-               case MATCHCRITERIA_UNREAD:
-               case MATCHCRITERIA_NEW:
-               case MATCHCRITERIA_MARKED:
-               case MATCHCRITERIA_REPLIED:
-               case MATCHCRITERIA_DELETED:
-               case MATCHCRITERIA_SIZE_GREATER:
-               case MATCHCRITERIA_SIZE_SMALLER:
-               case MATCHCRITERIA_SIZE_EQUAL:
+               if (imap_matcher_type_is_local(matchertype))
                        return NULL;
-               }
 
                /* the Message-ID header is also cached */
                if (matchertype == MATCHCRITERIA_HEADER && g_strcmp0("Message-ID", match->header) == 0) {
@@ -2031,6 +2184,10 @@ static IMAPSearchKey* search_make_key(MatcherProp* match, gboolean* is_all)
                        result = imap_search_new(IMAP_SEARCH_CRITERIA_TAG, NULL, RTAG_JUNK, 0);
                        break;
 
+               case MATCHCRITERIA_MESSAGEID:
+                       result = imap_search_new(IMAP_SEARCH_CRITERIA_HEADER, "Message-ID", match->expr, 0);
+                       break;
+
                case MATCHCRITERIA_INREPLYTO:
                        result = imap_search_new(IMAP_SEARCH_CRITERIA_HEADER, "In-Reply-To", match->expr, 0);
                        break;
@@ -2047,6 +2204,7 @@ static IMAPSearchKey* search_make_key(MatcherProp* match, gboolean* is_all)
                        break;
 
                case MATCHCRITERIA_HEADERS_PART:
+               case MATCHCRITERIA_HEADERS_CONT:
                        result = imap_search_and(
                                        imap_search_not(imap_search_new(IMAP_SEARCH_CRITERIA_BODY, NULL, match->expr, 0)),
                                        imap_search_new(IMAP_SEARCH_CRITERIA_MESSAGE, NULL, match->expr, 0)
@@ -2157,6 +2315,71 @@ static IMAPSearchKey* search_make_key(MatcherProp* match, gboolean* is_all)
        return NULL;
 }
 
+static void imap_change_search_charset(IMAPFolder *folder)
+{
+       /* If server supports charset in searches, but the last used one failed,
+        * changed to the next preferred charset. If none are still available,
+        * disable charset searches.
+        * Charsets are tried in the following order: 
+        * UTF-8, locale's charset, UTF-7.
+        */
+
+       if (folder->search_charset_supported) {
+               if (folder->search_charset && !strcmp(folder->search_charset, conv_get_locale_charset_str_no_utf8()))
+                       folder->search_charset = "UTF-8";
+               else if (folder->search_charset && !strcmp(folder->search_charset, "UTF-8"))
+                       folder->search_charset = "UTF-7";
+               else {
+                       folder->search_charset = NULL;
+                       folder->search_charset_supported = FALSE;
+               }
+       }
+}
+
+static MatcherProp *imap_matcher_prop_set_charset(IMAPFolder *folder,
+                                                 MatcherProp *utf8_prop,
+                                                 gchar **charset)
+{
+       /* If the match is going to be done locally, or the criteria is on
+        * tag (special-cased to modified-UTF-7), or the expression searched
+        * is ASCII, don't bother converting.
+        */
+       if (imap_matcher_type_is_local(utf8_prop->criteria)
+        || utf8_prop->criteria == MATCHCRITERIA_TAG
+        || utf8_prop->criteria == MATCHCRITERIA_NOT_TAG
+        || utf8_prop->expr == NULL
+        || is_ascii_str(utf8_prop->expr))
+               return matcherprop_new(utf8_prop->criteria,
+                              utf8_prop->header,
+                              utf8_prop->matchtype,
+                              utf8_prop->expr,
+                              utf8_prop->value);
+       else {
+               gchar *conv_expr = NULL;
+
+               /* If the search is server-side and the server doesn't support
+                * searching with the charsets we handle, bail out.
+                */
+               if (folder->search_charset_supported == FALSE)
+                       return NULL;
+
+               /* Else, convert. */
+               if (*charset == NULL)
+                       *charset = g_strdup(folder->search_charset);
+
+               conv_expr = conv_codeset_strdup(utf8_prop->expr, CS_UTF_8, *charset);
+
+               if (conv_expr == NULL)
+                       conv_expr = g_strdup(utf8_prop->expr);
+
+               return matcherprop_new(utf8_prop->criteria,
+                              utf8_prop->header,
+                              utf8_prop->matchtype,
+                              conv_expr,
+                              utf8_prop->value);
+       }
+}
+
 static gint    search_msgs             (Folder                 *folder,
                                         FolderItem             *container,
                                         MsgNumberList          **msgs,
@@ -2171,6 +2394,7 @@ static gint       search_msgs             (Folder                 *folder,
        clist* uidlist = NULL;
        gboolean server_filtering_useless = FALSE;
         IMAPSession *session;
+       gchar *charset_to_use = NULL;
 
        if (on_server == NULL || !*on_server) {
                return folder_item_search_msgs_local(folder, container, msgs, on_server,
@@ -2181,8 +2405,17 @@ static gint      search_msgs             (Folder                 *folder,
                IMAPSearchKey* matcherPart = NULL;
                MatcherProp* prop = (MatcherProp*) cur->data;
                gboolean is_all;
+               MatcherProp *imap_prop = imap_matcher_prop_set_charset(IMAP_FOLDER(folder), prop, &charset_to_use);
+
+               if (imap_prop == NULL) {
+                       /* Couldn't convert matcherprop to IMAP - probably not ascii
+                        * and server doesn't support the charsets we do. */
+                        return -1;
+               }
 
-               matcherPart = search_make_key(prop, &is_all);
+               matcherPart = search_make_key(imap_prop, &is_all);
+
+               matcherprop_free(imap_prop);
 
                if (on_server) {
                        *on_server &= matcherPart != NULL && prop->matchtype == MATCHTYPE_MATCHCASE;
@@ -2220,7 +2453,10 @@ static gint      search_msgs             (Folder                 *folder,
                        *msgs = g_slist_prepend(*msgs, GUINT_TO_POINTER(((MsgInfo*) cur->data)->msgnum));
                        count++;
                }
+               procmsg_msg_list_free(list);
+
                *msgs = g_slist_reverse(*msgs);
+
                return count;
        }
 
@@ -2235,7 +2471,7 @@ static gint       search_msgs             (Folder                 *folder,
 
        if (progress_cb)
                progress_cb(progress_data, TRUE, 0, 0, container->total_msgs);
-       result = imap_threaded_search(folder, IMAP_SEARCH_TYPE_KEYED, key, NULL, &uidlist);
+       result = imap_threaded_search(folder, IMAP_SEARCH_TYPE_KEYED, key, charset_to_use, NULL, &uidlist);
        if (progress_cb)
                progress_cb(progress_data, TRUE, container->total_msgs, 0, container->total_msgs);
 
@@ -2243,9 +2479,25 @@ static gint      search_msgs             (Folder                 *folder,
                gint result = 0;
 
                *msgs = imap_uid_list_from_lep(uidlist, &result);
+
                mailimap_search_result_free(uidlist);
 
+               if (charset_to_use != NULL)
+                       g_free(charset_to_use);
+
                return result;
+       } else if (charset_to_use != NULL) {
+               /* If search failed and was on an 8-bit string, try the next
+                * available charset to search if there still are some.
+                */
+               g_free(charset_to_use);
+               
+               imap_change_search_charset(IMAP_FOLDER(folder));
+               if (IMAP_FOLDER(folder)->search_charset_supported)
+                       return search_msgs(folder, container, msgs, on_server, predicate,
+                                  progress_cb, progress_data);
+               else
+                       return -1;
        } else {
                return -1;
        }
@@ -2326,10 +2578,8 @@ static gint imap_do_remove_msgs(Folder *folder, FolderItem *dest,
        imap_scan_required(folder, dest);
 
        g_free(destdir);
-       if (ok == MAILIMAP_NO_ERROR)
-               return 0;
-       else
-               return -1;
+
+       return 0;
 }
 
 static gint imap_remove_msgs(Folder *folder, FolderItem *dest, 
@@ -2405,8 +2655,10 @@ static gint imap_scan_tree_real(Folder *folder, gboolean subs_only)
                strtailchomp(root_folder, '/');
                real_path = imap_get_real_path
                        (session, IMAP_FOLDER(folder), root_folder, &r);
-               if (is_fatal(r))
+               if (is_fatal(r)) {
+                       g_free(real_path);
                        return -1;
+               }
                debug_print("IMAP root directory: %s\n", real_path);
 
                /* check if root directory exist */
@@ -2541,7 +2793,7 @@ static gint imap_scan_tree_recursive(IMAPSession *session, FolderItem *item, gbo
                        }
                }
                if (!new_item) {
-                       if (old_item && old_item->path && !strcmp(old_item->path, "INBOX")) {
+                       if (old_item && old_item->path && !strcasecmp(old_item->path, "INBOX")) {
                                debug_print("not removing INBOX\n");
                        } else {
                                debug_print("folder '%s' not found. removing...\n",
@@ -2582,7 +2834,7 @@ static gint imap_scan_tree_recursive(IMAPSession *session, FolderItem *item, gbo
                        folder_item_append(item, new_item);
                }
 
-               if (!strcmp(new_item->path, "INBOX")) {
+               if (!strcasecmp(new_item->path, "INBOX")) {
                        new_item->stype = F_INBOX;
                        folder->inbox = new_item;
                } else if (!folder_item_parent(item) || item->stype == F_INBOX) {
@@ -2593,7 +2845,7 @@ static gint imap_scan_tree_recursive(IMAPSession *session, FolderItem *item, gbo
                        if (!folder->outbox && !g_ascii_strcasecmp(base, "Sent")) {
                                new_item->stype = F_OUTBOX;
                                folder->outbox = new_item;
-                       } else if (!folder->draft && !g_ascii_strcasecmp(base, "Drafts")) {
+                       } else if (!folder->draft && (!g_ascii_strcasecmp(base, "Drafts") || !g_ascii_strcasecmp(base, "Draft"))) {
                                new_item->stype = F_DRAFT;
                                folder->draft = new_item;
                        } else if (!folder->queue && !g_ascii_strcasecmp(base, "Queue")) {
@@ -2711,6 +2963,7 @@ GList *imap_scan_subtree(Folder *folder, FolderItem *item, gboolean unsubs_only,
                        if (r) {
                                g_free(real_path);
                                statusbar_pop_all();
+                               g_free(tmp);
                                return NULL;
                        }
                        folder_item_destroy(cur_item);
@@ -2782,12 +3035,12 @@ static FolderItem *imap_create_special_folder(Folder *folder,
        new_item = imap_create_folder(folder, item, name);
 
        if (!new_item) {
-               g_warning("Can't create '%s'\n", name);
+               g_warning("Can't create '%s'", name);
                if (!folder->inbox) return NULL;
 
                new_item = imap_create_folder(folder, folder->inbox, name);
                if (!new_item)
-                       g_warning("Can't create '%s' under INBOX\n", name);
+                       g_warning("Can't create '%s' under INBOX", name);
                else
                        new_item->stype = stype;
        } else
@@ -2803,13 +3056,25 @@ static gchar *imap_folder_get_path(Folder *folder)
        g_return_val_if_fail(folder != NULL, NULL);
         g_return_val_if_fail(folder->account != NULL, NULL);
 
+#ifdef G_OS_WIN32
+       gchar *sanitized_dirname = g_strdup(folder->account->recv_server);
+       g_strdelimit(sanitized_dirname, ":", ',');
+#endif
+
         folder_path = g_strconcat(get_imap_cache_dir(),
                                   G_DIR_SEPARATOR_S,
+#ifdef G_OS_WIN32
+                                                                                                                                       sanitized_dirname,
+#else
                                   folder->account->recv_server,
+#endif
                                   G_DIR_SEPARATOR_S,
                                   folder->account->userid,
                                   NULL);
 
+#ifdef G_OS_WIN32
+       g_free(sanitized_dirname);
+#endif
        return folder_path;
 }
 
@@ -2822,7 +3087,7 @@ static gchar *imap_encode_unsafe_chars(const gchar *str)
                return NULL;
        ret = g_malloc(3*strlen(str)+1);
        o_ret = ret;
-       for (i = str; *i; i++) {
+       for (i = (gchar *)str; *i; i++) {
                switch(*i) {
                        case ':':
                        case '|':
@@ -2903,13 +3168,22 @@ static FolderItem *imap_create_folder(Folder *folder, FolderItem *parent,
        g_return_val_if_fail(parent != NULL, NULL);
        g_return_val_if_fail(name != NULL, NULL);
 
+       if (to_number(name) > 0) {
+               gchar *cached_msg = imap_get_cached_filename(parent, to_number(name));
+               if (is_file_exist(cached_msg)) {
+                       if (claws_unlink(cached_msg) != 0) {
+                               return NULL;
+                       }
+               }
+       }
+
        debug_print("getting session...\n");
        session = imap_session_get(folder);
        if (!session) {
                return NULL;
        }
 
-       if (!folder_item_parent(parent) && strcmp(name, "INBOX") == 0) {
+       if (!folder_item_parent(parent) && strcasecmp(name, "INBOX") == 0) {
                dirpath = g_strdup(name);
        }else if (parent->path)
                dirpath = g_strconcat(parent->path, "/", name, NULL);
@@ -2945,7 +3219,7 @@ static FolderItem *imap_create_folder(Folder *folder, FolderItem *parent,
        /* remove trailing / for display */
        strtailchomp(new_name, '/');
 
-       if (strcmp(dirpath, "INBOX") != 0) {
+       if (strcasecmp(dirpath, "INBOX") != 0) {
                GPtrArray *argbuf;
                int r;
                clist * lep_list;
@@ -3060,13 +3334,14 @@ static gint imap_rename_folder(Folder *folder, FolderItem *item,
 
        if (strchr(name, imap_get_path_separator(session, IMAP_FOLDER(folder), item->path, &ok)) != NULL ||
                is_fatal(ok)) {
-               g_warning(_("New folder name must not contain the namespace "
-                           "path separator"));
+               g_warning("New folder name must not contain the namespace "
+                           "path separator");
                return -1;
        }
 
        real_oldpath = imap_get_real_path(session, IMAP_FOLDER(folder), item->path, &ok);
        if (is_fatal(ok)) {
+               g_free(real_oldpath);
                return -1;
        }
 
@@ -3083,11 +3358,13 @@ static gint imap_rename_folder(Folder *folder, FolderItem *item,
        }
 
        separator = imap_get_path_separator(session, IMAP_FOLDER(folder), item->path, &ok);
-       if (is_fatal(ok))
+       if (is_fatal(ok)) {
+               g_free(real_oldpath);
                return -1;
-       if (strchr(item->path, G_DIR_SEPARATOR)) {
+       }
+       if (strchr(item->path, '/')) {
                dirpath = g_path_get_dirname(item->path);
-               newpath = g_strconcat(dirpath, G_DIR_SEPARATOR_S, name, NULL);
+               newpath = g_strconcat(dirpath, "/", name, NULL);
                g_free(dirpath);
        } else
                newpath = g_strdup(name);
@@ -3149,7 +3426,7 @@ gint imap_subscribe(Folder *folder, FolderItem *item, gchar *rpath, gboolean sub
                        g_free(path);
                        return -1;
                }
-               if (!strcmp(path, "INBOX") && sub == FALSE) {
+               if (!strcasecmp(path, "INBOX") && sub == FALSE) {
                        g_free(path);
                        return -1;
                }
@@ -3181,9 +3458,10 @@ static gint imap_remove_folder_real(Folder *folder, FolderItem *item)
                return -1;
        }
        path = imap_get_real_path(session, IMAP_FOLDER(folder), item->path, &ok);
-       if (is_fatal(ok))
+       if (is_fatal(ok)) {
+               g_free(path);
                return -1;
-
+       }
        imap_threaded_subscribe(folder, path, FALSE);
 
        selected_folder = (session->mbox != NULL) &&
@@ -3217,7 +3495,7 @@ static gint imap_remove_folder_real(Folder *folder, FolderItem *item)
        g_free(path);
        cache_dir = folder_item_get_path(item);
        if (is_dir_exist(cache_dir) && remove_dir_recursive(cache_dir) < 0)
-               g_warning("can't remove directory '%s'\n", cache_dir);
+               g_warning("can't remove directory '%s'", cache_dir);
        g_free(cache_dir);
        folder_item_remove(item);
        return 0;
@@ -3352,12 +3630,7 @@ static void *imap_get_uncached_messages_thread(void *data)
                main_window_reflect_tags_changes(mainwindow_get_mainwindow());
        }
 
-       for (cur = seq_list; cur != NULL; cur = g_slist_next(cur)) {
-               struct mailimap_set * imapset;
-               
-               imapset = cur->data;
-               mailimap_set_free(imapset);
-       }
+       imap_lep_set_free(seq_list);
        
        session_set_access_time(SESSION(session));
        stuff->done = TRUE;
@@ -3470,16 +3743,13 @@ gchar imap_get_path_separator_for_item(FolderItem *item)
        if (!item)
                return '/';
        folder = item->folder;
-       
+
        if (!folder)
                return '/';
-       
+
        imap_folder = IMAP_FOLDER(folder);
-       
-       if (!imap_folder)
-               return '/';
-       
-       debug_print("getting session...");
+
+       debug_print("getting session...\n");
        session = imap_session_get(FOLDER(folder));
        result = imap_get_path_separator(session, imap_folder, item->path, &ok);
        return result;
@@ -3674,8 +3944,10 @@ static gint imap_select(IMAPSession *session, IMAPFolder *folder,
        session->expunge = 0;
 
        real_path = imap_get_real_path(session, folder, path, &ok);
-       if (is_fatal(ok))
-               return ok;              
+       if (is_fatal(ok)) {
+               g_free(real_path);
+               return ok;      
+       }       
        g_slist_free(IMAP_FOLDER_ITEM(item)->ok_flags);
        IMAP_FOLDER_ITEM(item)->ok_flags = NULL;
        ok = imap_cmd_select(session, real_path,
@@ -3810,7 +4082,7 @@ static gint imap_status(IMAPSession *session, IMAPFolder *folder,
        mailimap_mailbox_data_status_free(data_status);
        
        if (got_values != mask) {
-               g_warning("status: incomplete values received (%d)\n", got_values);
+               g_warning("status: incomplete values received (%d)", got_values);
        }
        return MAILIMAP_NO_ERROR;
 }
@@ -3830,7 +4102,7 @@ static gint imap_cmd_login(IMAPSession *session,
        int r;
        gint ok;
 
-       if (!strcmp(type, "LOGIN") && imap_has_capability(session, "LOGINDISABLED")) {
+       if (!strcmp(type, "plaintext") && imap_has_capability(session, "LOGINDISABLED")) {
                gint ok = MAILIMAP_ERROR_BAD_STATE;
                if (imap_has_capability(session, "STARTTLS")) {
 #ifdef USE_GNUTLS
@@ -3851,7 +4123,7 @@ static gint imap_cmd_login(IMAPSession *session,
 #else          
                        log_error(LOG_PROTOCOL, _("Connection to %s failed: "
                                        "server requires TLS, but Claws Mail "
-                                       "has been compiled without OpenSSL "
+                                       "has been compiled without TLS "
                                        "support.\n"),
                                        SESSION(session)->server);
                        return MAILIMAP_ERROR_LOGIN;
@@ -3892,8 +4164,6 @@ static gint imap_cmd_noop(IMAPSession *session)
                return r;
        }
 
-       session->folder_content_changed = FALSE;
-
        if ((exists && exists != session->exists)
         || (recent && recent != session->recent)
         || (expunge && expunge != session->expunge)
@@ -4228,16 +4498,16 @@ static gboolean imap_rename_folder_func(GNode *node, gpointer data)
        gint ok = MAILIMAP_NO_ERROR;
        oldpathlen = strlen(oldpath);
        if (strncmp(oldpath, item->path, oldpathlen) != 0) {
-               g_warning("path doesn't match: %s, %s\n", oldpath, item->path);
+               g_warning("path doesn't match: %s, %s", oldpath, item->path);
                return TRUE;
        }
 
        base = item->path + oldpathlen;
-       while (*base == G_DIR_SEPARATOR) base++;
+       while (*base == '/') base++;
        if (*base == '\0')
                new_itempath = g_strdup(newpath);
        else
-               new_itempath = g_strconcat(newpath, G_DIR_SEPARATOR_S, base,
+               new_itempath = g_strconcat(newpath, "/", base,
                                           NULL);
 
        real_oldpath = imap_get_real_path(session, IMAP_FOLDER(item->folder), item->path, &ok);
@@ -4278,15 +4548,12 @@ static gint get_list_of_uids(IMAPSession *session, Folder *folder, IMAPFolderIte
        
        if (folder->account && folder->account->low_bandwidth) {
                r = imap_threaded_search(folder, IMAP_SEARCH_TYPE_SIMPLE,
-                               NULL, NULL, &lep_uidlist);
+                               NULL, NULL, NULL, &lep_uidlist);
        }
        
        if (r == MAILIMAP_NO_ERROR) {
-               GSList * fetchuid_list =
-                       imap_uid_list_from_lep(lep_uidlist, NULL);
+               uidlist = imap_uid_list_from_lep(lep_uidlist, NULL);
                mailimap_search_result_free(lep_uidlist);
-               
-               uidlist = g_slist_concat(fetchuid_list, uidlist);
        } else {
                carray * lep_uidtab;
                if (r != -1) { /* inited */
@@ -4297,10 +4564,8 @@ static gint get_list_of_uids(IMAPSession *session, Folder *folder, IMAPFolderIte
                r = imap_threaded_fetch_uid(folder, 1,
                                    &lep_uidtab);
                if (r == MAILIMAP_NO_ERROR) {
-                       GSList * fetchuid_list =
-                               imap_uid_list_from_lep_tab(lep_uidtab);
+                       uidlist = imap_uid_list_from_lep_tab(lep_uidtab);
                        imap_fetch_uid_list_free(lep_uidtab);
-                       uidlist = g_slist_concat(fetchuid_list, uidlist);
                }
        }
        
@@ -4320,8 +4585,6 @@ static gint get_list_of_uids(IMAPSession *session, Folder *folder, IMAPFolderIte
        }
        g_slist_free(uidlist);
 
-       unlock_session(session); /* locked from imap_get_num_list */
-
        return nummsgs;
 
 }
@@ -4334,6 +4597,8 @@ gint imap_get_num_list(Folder *folder, FolderItem *_item, GSList **msgnum_list,
        GSList *uidlist = NULL;
        gchar *dir;
        gint known_list_len = 0;
+       gchar *path;
+
        debug_print("get_num_list\n");
        
        g_return_val_if_fail(folder != NULL, -1);
@@ -4362,18 +4627,25 @@ gint imap_get_num_list(Folder *folder, FolderItem *_item, GSList **msgnum_list,
                return -1;
        }
        
+       path = folder_item_get_path(_item);
+       if (!is_dir_exist(path)) {
+               if(is_file_exist(path))
+                       claws_unlink(path);
+               make_dir_hier(path);
+       }
+       g_free(path);
+
        debug_print("getting session...\n");
        session = imap_session_get(folder);
        g_return_val_if_fail(session != NULL, -1);
 
-       lock_session(session); /* unlocked by get_list_of_uids */
+       lock_session(session);
        if (FOLDER_ITEM(item)->path) 
-               statusbar_print_all(_("Scanning folder %s%c%s ..."),
+               statusbar_print_all(_("Scanning folder %s/%s..."),
                                      FOLDER_ITEM(item)->folder->name, 
-                                     G_DIR_SEPARATOR,
                                      FOLDER_ITEM(item)->path);
        else
-               statusbar_print_all(_("Scanning folder %s ..."),
+               statusbar_print_all(_("Scanning folder %s..."),
                                      FOLDER_ITEM(item)->folder->name);
 
        if (item->should_trash_cache) {
@@ -4391,6 +4663,9 @@ gint imap_get_num_list(Folder *folder, FolderItem *_item, GSList **msgnum_list,
        }
 
        nummsgs = get_list_of_uids(session, folder, item, &uidlist);
+
+       unlock_session(session);
+
        /* session could be broken now, in case of fatal error */
 
        debug_print("get_num_list: got %d msgs\n", nummsgs);
@@ -4609,8 +4884,12 @@ gboolean imap_scan_required(Folder *folder, FolderItem *_item)
                        return FALSE;
                }
                
-               debug_print("exists %d, item->item.total_msgs %d\n", 
-                       exists, item->item.total_msgs);
+               debug_print("exists %d, item->item.total_msgs %d\n"
+                           "\tunseen %d, item->item.unread_msgs %d\n"
+                           "\tuid_next %d, item->uid_next %d\n"
+                           "\tuid_val %d, item->item.mtime %ld\n",
+                           exists, item->item.total_msgs, unseen, item->item.unread_msgs,
+                           uid_next, item->uid_next, uid_val, (long)(item->item.mtime));
                if (exists != item->item.total_msgs
                    || unseen != item->item.unread_msgs 
                    || uid_next != item->uid_next
@@ -4913,12 +5192,12 @@ static /*gint*/ void *imap_get_flags_thread(void *data)
                        imapset = cur->data;
                        if (reverse_seen) {
                                r = imap_threaded_search(folder, IMAP_SEARCH_TYPE_SEEN, NULL,
-                                                        full_search ? NULL:imapset, &lep_uidlist);
+                                                        NULL, full_search ? NULL:imapset, &lep_uidlist);
                        }
                        else {
                                r = imap_threaded_search(folder,
                                                         IMAP_SEARCH_TYPE_UNSEEN, NULL,
-                                                        full_search ? NULL:imapset, &lep_uidlist);
+                                                        NULL, full_search ? NULL:imapset, &lep_uidlist);
                        }
                        if (r == MAILIMAP_NO_ERROR) {
                                GSList * uidlist;
@@ -4933,7 +5212,7 @@ static /*gint*/ void *imap_get_flags_thread(void *data)
                        }
 
                        r = imap_threaded_search(folder, IMAP_SEARCH_TYPE_FLAGGED, NULL,
-                                                full_search ? NULL:imapset, &lep_uidlist);
+                                                NULL, full_search ? NULL:imapset, &lep_uidlist);
                        if (r == MAILIMAP_NO_ERROR) {
                                GSList * uidlist;
 
@@ -4948,7 +5227,7 @@ static /*gint*/ void *imap_get_flags_thread(void *data)
 
                        if (fitem->opened || fitem->processing_pending || fitem == folder->inbox) {
                                r = imap_threaded_search(folder, IMAP_SEARCH_TYPE_ANSWERED, NULL,
-                                                        full_search ? NULL:imapset, &lep_uidlist);
+                                                        NULL, full_search ? NULL:imapset, &lep_uidlist);
                                if (r == MAILIMAP_NO_ERROR) {
                                        GSList * uidlist;
 
@@ -4963,7 +5242,7 @@ static /*gint*/ void *imap_get_flags_thread(void *data)
 
                                if (flag_ok(IMAP_FOLDER_ITEM(fitem), IMAP_FLAG_FORWARDED)) {
                                        r = imap_threaded_search(folder, IMAP_SEARCH_TYPE_FORWARDED, NULL,
-                                                                full_search ? NULL:imapset, &lep_uidlist);
+                                                                NULL, full_search ? NULL:imapset, &lep_uidlist);
                                        if (r == MAILIMAP_NO_ERROR) {
                                                GSList * uidlist;
 
@@ -4979,7 +5258,7 @@ static /*gint*/ void *imap_get_flags_thread(void *data)
 
                                if (flag_ok(IMAP_FOLDER_ITEM(fitem), IMAP_FLAG_SPAM)) {
                                        r = imap_threaded_search(folder, IMAP_SEARCH_TYPE_SPAM, NULL,
-                                                                full_search ? NULL:imapset, &lep_uidlist);
+                                                                NULL, full_search ? NULL:imapset, &lep_uidlist);
                                        if (r == MAILIMAP_NO_ERROR) {
                                                GSList * uidlist;
 
@@ -4994,7 +5273,7 @@ static /*gint*/ void *imap_get_flags_thread(void *data)
                                }
 
                                r = imap_threaded_search(folder, IMAP_SEARCH_TYPE_DELETED, NULL,
-                                                        full_search ? NULL:imapset, &lep_uidlist);
+                                                        NULL, full_search ? NULL:imapset, &lep_uidlist);
                                if (r == MAILIMAP_NO_ERROR) {
                                        GSList * uidlist;
 
@@ -5166,7 +5445,7 @@ static gint imap_get_flags(Folder *folder, FolderItem *item,
                data->full_search = TRUE;
        
        for (cur = tmp; cur; cur = cur->next)
-               procmsg_msginfo_free((MsgInfo *)cur->data);
+               procmsg_msginfo_free((MsgInfo **)&(cur->data));
        
        g_slist_free(tmp);
 
@@ -5206,7 +5485,7 @@ static gboolean process_flags(gpointer key, gpointer value, gpointer user_data)
                ok = imap_set_message_flags(session, IMAP_FOLDER_ITEM(item),
                        data->msglist, flags_value, NULL, flags_set);
        } else {
-               g_warning("can't select mailbox %s\n", item->path);
+               g_warning("can't select mailbox %s", item->path);
        }
 
        if (!is_fatal(ok))
@@ -5249,7 +5528,7 @@ static gboolean process_tags(gpointer key, gpointer value, gpointer user_data)
                ok = imap_set_message_flags(session, IMAP_FOLDER_ITEM(item),
                        data->msglist, 0, &list, tags_set);
        } else {
-               g_warning("can't select mailbox %s\n", item->path);
+               g_warning("can't select mailbox %s", item->path);
        }
 
        if (!is_fatal(ok))
@@ -5425,7 +5704,9 @@ static GSList * imap_list_from_lep(IMAPFolder * folder,
                        }
 
                        if (!all && dup_name[strlen(dup_name)-1] == '/') {
-                               dup_name[strlen(dup_name)-1] = '\0';
+                               g_free(base);
+                               free(dup_name);
+                               continue;
                        }
 
                        loc_name = imap_modified_utf7_to_utf8(base, FALSE);
@@ -5434,7 +5715,7 @@ static GSList * imap_list_from_lep(IMAPFolder * folder,
                        new_item = folder_item_new(FOLDER(folder), loc_name, loc_path);
                        if ((flags & ETPAN_IMAP_MB_NOINFERIORS) != 0)
                                new_item->no_sub = TRUE;
-                       if (strcmp(dup_name, "INBOX") != 0 &&
+                       if (strcasecmp(dup_name, "INBOX") != 0 &&
                            ((flags & ETPAN_IMAP_MB_NOSELECT) != 0))
                                new_item->no_select = TRUE;
 
@@ -5600,7 +5881,7 @@ static MsgInfo *imap_envelope_from_lep(struct imap_fetch_env_info * info,
        guint32 uid = 0;
        goffset size = 0;
        MsgFlags flags = {0, 0};
-       
+
        if (info->headers == NULL)
                return NULL;
 
@@ -5611,11 +5892,11 @@ static MsgInfo *imap_envelope_from_lep(struct imap_fetch_env_info * info,
                MSG_SET_TMP_FLAGS(flags, MSG_DRAFT);
        }
        flags.perm_flags = info->flags;
-       
+
        uid = info->uid;
        size = (goffset) info->size;
        msginfo = procheader_parse_str(info->headers, flags, FALSE, FALSE);
-       
+
        if (msginfo) {
                msginfo->msgnum = uid;
                msginfo->size = size;
@@ -5696,11 +5977,8 @@ void imap_disconnect_all(gboolean have_connectivity)
        GList *list;
        gboolean short_timeout;
 #ifdef HAVE_NETWORKMANAGER_SUPPORT
-       GError *error;
-#endif
+       GError *error = NULL;
 
-#ifdef HAVE_NETWORKMANAGER_SUPPORT
-       error = NULL;
        short_timeout = !networkmanager_is_online(&error);
        if(error) {
                short_timeout = TRUE;
@@ -5718,12 +5996,15 @@ void imap_disconnect_all(gboolean have_connectivity)
                if (account->protocol == A_IMAP4) {
                        RemoteFolder *folder = (RemoteFolder *)account->folder;
                        if (folder && folder->session) {
+                               if (imap_is_busy(FOLDER(folder)))
+                                       imap_threaded_cancel(FOLDER(folder));
+
                                IMAPSession *session = (IMAPSession *)folder->session;
                                if (have_connectivity)
                                        imap_threaded_disconnect(FOLDER(folder));
                                SESSION(session)->state = SESSION_DISCONNECTED;
                                SESSION(session)->sock = NULL;
-                               session_destroy(SESSION(session));
+                               imap_safe_destroy(session);
                                folder->session = NULL;
                        }
                }