probable fix for bug 4136 'Quick search throws bad command argument error 11 on Micro...
[claws.git] / src / imap.c
index 76d1dbd8561adc456719610879433e7457bb60e0..cdf15378dd380ce3f8bb4c5609bc09ec97a30e18 100644 (file)
@@ -1,6 +1,6 @@
 /*
- * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
- * Copyright (C) 1999-2014 Hiroyuki Yamamoto and the Claws Mail team
+ * Claws Mail -- a GTK+ based, lightweight, and fast e-mail client
+ * Copyright (C) 1999-2020 the Claws Mail team and Hiroyuki Yamamoto
  *
  * 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
 #include "account.h"
 #include "tags.h"
 #include "main.h"
+#include "passwordstore.h"
+#include "file-utils.h"
 
 typedef struct _IMAPFolder     IMAPFolder;
 typedef struct _IMAPSession    IMAPSession;
 typedef struct _IMAPNameSpace  IMAPNameSpace;
 typedef struct _IMAPFolderItem IMAPFolderItem;
 
-#include "prefs_account.h"
-
 #define IMAP_FOLDER(obj)       ((IMAPFolder *)obj)
 #define IMAP_FOLDER_ITEM(obj)  ((IMAPFolderItem *)obj)
 #define IMAP_SESSION(obj)      ((IMAPSession *)obj)
@@ -400,7 +399,7 @@ static gint imap_cmd_store  (IMAPSession    *session,
                                 IMAPFlags flags,
                                 GSList *tags,
                                 int do_add);
-static gint imap_cmd_expunge   (IMAPSession    *session, gboolean force);
+static gint imap_cmd_expunge   (IMAPSession    *session);
 
 static void imap_path_separator_subst          (gchar          *str,
                                                 gchar           separator);
@@ -427,7 +426,6 @@ static gint imap_get_flags                  (Folder         *folder,
                                                 FolderItem     *item,
                                                 MsgInfoList    *msglist,
                                                 GHashTable     *msgflags);
-static gchar *imap_folder_get_path             (Folder         *folder);
 static gchar *imap_item_get_path               (Folder         *folder,
                                                 FolderItem     *item);
 static MsgInfo *imap_parse_msg(const gchar *file, FolderItem *item);
@@ -460,7 +458,7 @@ FolderClass *imap_get_class(void)
        if (imap_class.idstr == NULL) {
                imap_class.type = F_IMAP;
                imap_class.idstr = "imap";
-               imap_class.uistr = "IMAP4";
+               imap_class.uistr = "IMAP";
                imap_class.supports_server_search = TRUE;
 
                /* Folder functions */
@@ -505,9 +503,6 @@ FolderClass *imap_get_class(void)
                imap_class.synchronise = imap_synchronise;
                imap_class.remove_cached_msg = imap_remove_cached_msg;
                imap_class.commit_tags = imap_commit_tags;
-#ifdef USE_PTREAD
-               pthread_mutex_init(&imap_mutex, NULL);
-#endif
        }
        
        return &imap_class;
@@ -579,7 +574,7 @@ static void imap_disc_session_destroy(IMAPSession *session)
        
        if (rfolder == NULL)
                return;
-       log_warning(LOG_PROTOCOL, _("IMAP4 connection broken\n"));
+       log_warning(LOG_PROTOCOL, _("IMAP connection broken\n"));
        SESSION(session)->state = SESSION_DISCONNECTED;
        SESSION(session)->sock = NULL;
 }
@@ -605,9 +600,15 @@ static gboolean is_fatal(int libetpan_errcode)
        }
 }
 
+#define MY_LOG_WARNING(concat_cmd, ...) \
+       msg = concat_cmd; \
+       log_warning(LOG_PROTOCOL, msg, __VA_ARGS__); \
+       g_free(msg);
+
 static void imap_handle_error(Session *session, const gchar *server, int libetpan_errcode)
 {
        const gchar *session_server = (session ? session->server : NULL);
+       gchar *msg;
 
        if (session_server == NULL)
                session_server = server;
@@ -618,135 +619,135 @@ 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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(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);
+               MY_LOG_WARNING(g_strconcat(_("IMAP error on %s:"), " ", _("SSL/TLS error"), "\n", NULL), session_server)
                break;
 #endif
        default:
-               log_warning(LOG_PROTOCOL, _("IMAP error on %s: Unknown error [%d]\n"),
-                       session_server, libetpan_errcode);
+               MY_LOG_WARNING(g_strconcat(_("IMAP error on %s:"), " ", _("Unknown error [%d]"), "\n", NULL),
+                       session_server, libetpan_errcode)
                break;
        }
 
@@ -758,6 +759,8 @@ static void imap_handle_error(Session *session, const gchar *server, int libetpa
        }
 }
 
+#undef MY_LOG_WARNING
+
 static Folder *imap_folder_new(const gchar *name, const gchar *path)
 {
        Folder *folder;
@@ -901,9 +904,15 @@ static gint imap_auth(IMAPSession *session, const gchar *user, const gchar *pass
        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;
@@ -913,12 +922,14 @@ static gint imap_auth(IMAPSession *session, const gchar *user, const gchar *pass
                                "\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"))
@@ -927,10 +938,14 @@ static gint imap_auth(IMAPSession *session, const gchar *user, const gchar *pass
                        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)
@@ -954,6 +969,18 @@ static gint imap_auth(IMAPSession *session, const gchar *user, const gchar *pass
                                     "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: "
@@ -985,10 +1012,10 @@ static IMAPSession *imap_reconnect_if_possible(Folder *folder, IMAPSession *sess
                session = NULL;
        } else {
                rfolder->session = NULL;
-               log_warning(LOG_PROTOCOL, _("IMAP4 connection to %s has been"
+               log_warning(LOG_PROTOCOL, _("IMAP connection to %s has been"
                            " disconnected. Reconnecting...\n"),
                            folder->account->recv_server);
-               statusbar_print_all(_("IMAP4 connection to %s has been"
+               statusbar_print_all(_("IMAP connection to %s has been"
                            " disconnected. Reconnecting...\n"),
                            folder->account->recv_server);
                SESSION(session)->state = SESSION_DISCONNECTED;
@@ -1113,6 +1140,7 @@ static IMAPSession *imap_session_new(Folder * folder,
                                     const PrefsAccount *account)
 {
        IMAPSession *session;
+       ProxyInfo *proxy_info = NULL;
        gushort port;
        int r;
        int authenticated = FALSE;
@@ -1129,14 +1157,13 @@ static IMAPSession *imap_session_new(Folder * folder,
        if (account->ssl_imap != SSL_NONE) {
                if (alertpanel_full(_("Insecure connection"),
                        _("This connection is configured to be secured "
-                         "using SSL, but SSL is not available in this "
-                         "build of Claws Mail. \n\n"
+                         "using SSL/TLS, but SSL/TLS is not available "
+                         "in this build of Claws Mail. \n\n"
                          "Do you want to continue connecting to this "
                          "server? The communication would not be "
                          "secure."),
-                         GTK_STOCK_CANCEL, _("Con_tinue connecting"), 
-                         NULL, FALSE, NULL, ALERT_WARNING,
-                         G_ALERTDEFAULT) != G_ALERTALTERNATE)
+                         GTK_STOCK_CANCEL, _("Con_tinue connecting"), NULL,
+                               ALERTFOCUS_FIRST, FALSE, NULL, ALERT_WARNING) != G_ALERTALTERNATE)
                        return NULL;
        }
        port = account->set_imapport ? account->imapport
@@ -1144,13 +1171,27 @@ static IMAPSession *imap_session_new(Folder * folder,
 #endif
 
        imap_init(folder);
-       buf = g_strdup_printf(_("Account '%s': Connecting to IMAP4 server: %s:%d..."),
+       buf = g_strdup_printf(_("Account '%s': Connecting to IMAP server: %s:%d..."),
                                folder->account->account_name, folder->account->recv_server,
                                port);
-       statuswindow_print_all("%s", buf);
+       statusbar_print_all("%s", buf);
        log_message(LOG_PROTOCOL, "%s\n", buf);
        g_free(buf);
 
+       if (account->use_proxy) {
+               if (account->use_default_proxy) {
+                       proxy_info = (ProxyInfo *)&(prefs_common.proxy_info);
+                       if (proxy_info->use_proxy_auth)
+                               proxy_info->proxy_pass = passwd_store_get(PWS_CORE, PWS_CORE_PROXY,
+                                       PWS_CORE_PROXY_PASS);
+               } else {
+                       proxy_info = (ProxyInfo *)&(account->proxy_info);
+                       if (proxy_info->use_proxy_auth)
+                               proxy_info->proxy_pass = passwd_store_get_account(account->account_id,
+                                       PWS_ACCOUNT_PROXY_PASS);
+               }
+       }
+
 #ifndef G_OS_WIN32
        if (account->set_tunnelcmd) {
                r = imap_threaded_connect_cmd(folder,
@@ -1162,21 +1203,24 @@ static IMAPSession *imap_session_new(Folder * folder,
 #endif
        {
 #ifdef USE_GNUTLS
+
                if (ssl_type == SSL_TUNNEL) {
                        r = imap_threaded_connect_ssl(folder,
                                                      account->recv_server,
-                                                     port);
+                                                     port,
+                                                     proxy_info);
                }
                else 
 #endif
                {
                        r = imap_threaded_connect(folder,
                                                  account->recv_server,
-                                                 port);
+                                                 port,
+                                                 proxy_info);
                }
        }
        
-       statuswindow_pop_all();
+       statusbar_pop_all();
        if (r == MAILIMAP_NO_ERROR_AUTHENTICATED) {
                authenticated = TRUE;
        }
@@ -1186,16 +1230,16 @@ static IMAPSession *imap_session_new(Folder * folder,
        else {
 #ifdef USE_GNUTLS
                if (r == MAILIMAP_ERROR_SSL)
-                       log_error(LOG_PROTOCOL, _("SSL handshake failed\n"));
+                       log_error(LOG_PROTOCOL, _("SSL/TLS handshake failed\n"));
                else
 #endif
                        imap_handle_error(NULL, account->recv_server, r);
 
                if(!prefs_common.no_recv_err_panel) {
-                       alertpanel_error_log(_("Can't connect to IMAP4 server: %s:%d"),
+                       alertpanel_error_log(_("Can't connect to IMAP server: %s:%d"),
                                         account->recv_server, port);
                } else {
-                       log_error(LOG_PROTOCOL, _("Can't connect to IMAP4 server: %s:%d\n"),
+                       log_error(LOG_PROTOCOL, _("Can't connect to IMAP server: %s:%d\n"),
                                         account->recv_server, port);
                } 
                
@@ -1206,13 +1250,12 @@ static IMAPSession *imap_session_new(Folder * folder,
        session_init(SESSION(session), account, FALSE);
        SESSION(session)->type             = SESSION_IMAP;
        SESSION(session)->server           = g_strdup(account->recv_server);
-       SESSION(session)->port             = port;
+       SESSION(session)->port             = port;
        SESSION(session)->sock             = NULL;
-       
+       SESSION(session)->proxy_info       = proxy_info;
        SESSION(session)->destroy          = imap_session_destroy;
 
        session->capability = NULL;
-       
        session->authenticated = authenticated;
        session->mbox = NULL;
        session->exists = 0;
@@ -1228,7 +1271,7 @@ static IMAPSession *imap_session_new(Folder * folder,
 
                ok = imap_cmd_starttls(session);
                if (ok != MAILIMAP_NO_ERROR) {
-                       log_warning(LOG_PROTOCOL, _("Can't start TLS session.\n"));
+                       log_warning(LOG_PROTOCOL, _("Can't start STARTTLS session.\n"));
                        if (!is_fatal(ok)) {
                                SESSION(session)->sock = NULL;
                                imap_safe_destroy(session);
@@ -1241,7 +1284,9 @@ static IMAPSession *imap_session_new(Folder * folder,
                session->uidplus = FALSE;
                session->cmd_count = 1;
        }
+       SESSION(session)->use_tls_sni = account->use_tls_sni;
 #endif
+
        log_message(LOG_PROTOCOL, "IMAP connection is %s-authenticated\n",
                    (session->authenticated) ? "pre" : "un");
        
@@ -1253,18 +1298,17 @@ static IMAPSession *imap_session_new(Folder * folder,
 static gint imap_session_authenticate(IMAPSession *session, 
                                      PrefsAccount *account)
 {
-       gchar *pass, *acc_pass;
+       gchar *pass, *acc_pass = NULL;
        gboolean failed = FALSE;
        gint ok = MAILIMAP_NO_ERROR;
        g_return_val_if_fail(account->userid != NULL, MAILIMAP_ERROR_BAD_STATE);
 
-       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 = account->passwd;
+       if (!password_get(account->userid, account->recv_server, "imap",
+                        SESSION(session)->port, &acc_pass)) {
+               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) {
@@ -1272,8 +1316,9 @@ 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) {
@@ -1282,7 +1327,11 @@ 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);
@@ -1295,12 +1344,22 @@ try_again:
                                mainwindow_show_error();
                        } else
                                alertpanel_error_log(_("Couldn't login to IMAP server %s."), account->recv_server);
-               }               
+               }
+
+               if (acc_pass != NULL) {
+                       memset(acc_pass, 0, strlen(acc_pass));
+                       g_free(acc_pass);
+                       acc_pass = NULL;
+               }
 
                return ok;
        } 
 
-       statuswindow_pop_all();
+       if (acc_pass) {
+               memset(acc_pass, 0, strlen(acc_pass));
+               g_free(acc_pass);
+       }
+       statusbar_pop_all();
        session->authenticated = TRUE;
        return MAILIMAP_NO_ERROR;
 }
@@ -1328,17 +1387,17 @@ static guint get_file_size_with_crs(const gchar *filename)
        if (filename == NULL)
                return -1;
        
-       fp = g_fopen(filename, "rb");
+       fp = claws_fopen(filename, "rb");
        if (!fp)
                return -1;
        
-       while (fgets(buf, sizeof (buf), fp) != NULL) {
+       while (claws_fgets(buf, sizeof (buf), fp) != NULL) {
                cnt += strlen(buf);
                if (!strstr(buf, "\r\n") && strstr(buf, "\n"))
                        cnt++;
        }
        
-       fclose(fp);
+       claws_fclose(fp);
        return cnt;
 }
 
@@ -1536,11 +1595,11 @@ static gchar *imap_fetch_msg_full(Folder *folder, FolderItem *item, gint uid,
                                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 (%u/%zd); setting flag.\n",
+                                       debug_print("...fully cached in fact (%u/%"G_GOFFSET_FORMAT"); setting flag.\n",
                                                        have_size, cached->size);
                                        procmsg_msginfo_set_flags(cached, MSG_FULLY_CACHED, 0);
                                }
-                               procmsg_msginfo_free(cached);
+                               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");
@@ -1548,18 +1607,18 @@ 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);
                }
        }
 
@@ -1602,13 +1661,13 @@ 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;
@@ -1624,7 +1683,7 @@ 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;
        }
 
@@ -1640,15 +1699,15 @@ static gboolean imap_is_msg_fully_cached(Folder *folder, FolderItem *item, gint
                size = get_file_size_with_crs(filename);
        }
        g_free(filename);
-       debug_print("msg %d cached, has size %d, full should be %zd.\n", uid, size, cached->size);
+       debug_print("msg %d cached, has size %d, full should be %"G_GOFFSET_FORMAT".\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;   
 }
 
@@ -2436,6 +2495,13 @@ static gint      search_msgs             (Folder                 *folder,
        if (progress_cb)
                progress_cb(progress_data, TRUE, container->total_msgs, 0, container->total_msgs);
 
+       if (result == MAILIMAP_ERROR_PROTOCOL) {
+               debug_print("Server side search unavailable, using local search\n");
+               imap_handle_error(SESSION(session), NULL, result);
+               return folder_item_search_msgs_local(folder, container, msgs, NULL,
+                                                      predicate, progress_cb, progress_data);
+       } 
+       
        if (result == MAILIMAP_NO_ERROR) {
                gint result = 0;
 
@@ -2457,9 +2523,12 @@ static gint      search_msgs             (Folder                 *folder,
                if (IMAP_FOLDER(folder)->search_charset_supported)
                        return search_msgs(folder, container, msgs, on_server, predicate,
                                   progress_cb, progress_data);
-               else
+               else {
+                       imap_handle_error(SESSION(session), NULL, result);
                        return -1;
+               }
        } else {
+               imap_handle_error(SESSION(session), NULL, result);
                return -1;
        }
 }
@@ -2515,7 +2584,7 @@ static gint imap_do_remove_msgs(Folder *folder, FolderItem *dest,
                        return ok;
                }
        } /* else we just need to expunge */
-       ok = imap_cmd_expunge(session, folder->account->imap_use_trash);
+       ok = imap_cmd_expunge(session);
        if (ok != MAILIMAP_NO_ERROR) {
                log_warning(LOG_PROTOCOL, _("can't expunge\n"));
                g_free(destdir);
@@ -2651,7 +2720,7 @@ static gint imap_scan_tree_real(Folder *folder, gboolean subs_only)
        }
 
        if (!item || ((item->path || root_folder) &&
-                     strcmp2(item->path, root_folder) != 0)) {
+                     g_strcmp0(item->path, root_folder) != 0)) {
                folder_tree_destroy(folder);
                item = folder_item_new(folder, folder->name, root_folder);
                item->folder = folder;
@@ -2748,7 +2817,7 @@ static gint imap_scan_tree_recursive(IMAPSession *session, FolderItem *item, gbo
                new_item = NULL;
                for (cur = item_list; cur != NULL; cur = cur->next) {
                        FolderItem *cur_item = FOLDER_ITEM(cur->data);
-                       if (!strcmp2(old_item->path, cur_item->path)) {
+                       if (!g_strcmp0(old_item->path, cur_item->path)) {
                                new_item = cur_item;
                                break;
                        }
@@ -2781,7 +2850,7 @@ static gint imap_scan_tree_recursive(IMAPSession *session, FolderItem *item, gbo
 
                for (node = item->node->children; node != NULL;
                     node = node->next) {
-                       if (!strcmp2(FOLDER_ITEM(node->data)->path,
+                       if (!g_strcmp0(FOLDER_ITEM(node->data)->path,
                                     cur_item->path)) {
                                new_item = FOLDER_ITEM(node->data);
                                folder_item_destroy(cur_item);
@@ -2929,7 +2998,7 @@ GList *imap_scan_subtree(Folder *folder, FolderItem *item, gboolean unsubs_only,
                        }
                        folder_item_destroy(cur_item);
                        oldlitem = g_list_find_custom(
-                                       child_list, tmp, (GCompareFunc)strcmp2);
+                                       child_list, tmp, (GCompareFunc)g_strcmp0);
                        if (oldlitem) {
                                child_list = g_list_remove_link(child_list, oldlitem);
                                g_free(oldlitem->data);
@@ -3010,35 +3079,6 @@ static FolderItem *imap_create_special_folder(Folder *folder,
        return new_item;
 }
 
-static gchar *imap_folder_get_path(Folder *folder)
-{
-       gchar *folder_path;
-
-       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;
-}
-
 #ifdef G_OS_WIN32
 static gchar *imap_encode_unsafe_chars(const gchar *str)
 {
@@ -3048,7 +3088,7 @@ 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 '|':
@@ -3075,8 +3115,9 @@ static gchar *imap_item_get_path(Folder *folder, FolderItem *item)
        gchar *item_path = NULL;
        
        g_return_val_if_fail(folder != NULL, NULL);
+       g_return_val_if_fail(folder->account != NULL, NULL);
        g_return_val_if_fail(item != NULL, NULL);
-       folder_path = imap_folder_get_path(folder);
+       folder_path = prefs_account_cache_dir(folder->account, FALSE);
 
        g_return_val_if_fail(folder_path != NULL, NULL);
 
@@ -3181,19 +3222,15 @@ static FolderItem *imap_create_folder(Folder *folder, FolderItem *parent,
        strtailchomp(new_name, '/');
 
        if (strcasecmp(dirpath, "INBOX") != 0) {
-               GPtrArray *argbuf;
                int r;
                clist * lep_list;
                
-               argbuf = g_ptr_array_new();
                r = imap_threaded_list(folder, "", imap_path, &lep_list);
                if (r != MAILIMAP_NO_ERROR) {
                        imap_handle_error(SESSION(session), NULL, r);
                        log_warning(LOG_PROTOCOL, _("can't create mailbox: LIST failed\n"));
                        g_free(imap_path);
                        g_free(dirpath);
-                       ptr_array_free_strings(argbuf);
-                       g_ptr_array_free(argbuf, TRUE);
                        return NULL;
                }
                
@@ -3323,9 +3360,9 @@ static gint imap_rename_folder(Folder *folder, FolderItem *item,
                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);
@@ -3691,7 +3728,7 @@ static void imap_delete_all_cached_messages(FolderItem *item)
                remove_all_numbered_files(dir);
        g_free(dir);
 
-       debug_print("done.\n");
+       debug_print("Deleting all cached messages done.\n");
 }
 
 gchar imap_get_path_separator_for_item(FolderItem *item)
@@ -3710,7 +3747,7 @@ gchar imap_get_path_separator_for_item(FolderItem *item)
 
        imap_folder = IMAP_FOLDER(folder);
 
-       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;
@@ -4063,14 +4100,14 @@ static gint imap_cmd_login(IMAPSession *session,
        int r;
        gint ok;
 
-       if (!strcmp(type, "LOGIN") && imap_has_capability(session, "LOGINDISABLED")) {
-               gint ok = MAILIMAP_ERROR_BAD_STATE;
+       if (!strcmp(type, "plaintext") && imap_has_capability(session, "LOGINDISABLED")) {
+               ok = MAILIMAP_ERROR_BAD_STATE;
                if (imap_has_capability(session, "STARTTLS")) {
 #ifdef USE_GNUTLS
-                       log_warning(LOG_PROTOCOL, _("Server requires TLS to log in.\n"));
+                       log_warning(LOG_PROTOCOL, _("Server requires STARTTLS to log in.\n"));
                        ok = imap_cmd_starttls(session);
                        if (ok != MAILIMAP_NO_ERROR) {
-                               log_warning(LOG_PROTOCOL, _("Can't start TLS session.\n"));
+                               log_warning(LOG_PROTOCOL, _("Can't start STARTTLS session.\n"));
                                return ok;
                        } else {
                                /* refresh capas */
@@ -4083,8 +4120,8 @@ 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 TLS "
+                                       "server requires STARTTLS, but Claws Mail "
+                                       "has been compiled without STARTTLS "
                                        "support.\n"),
                                        SESSION(session)->server);
                        return MAILIMAP_ERROR_LOGIN;
@@ -4095,18 +4132,18 @@ static gint imap_cmd_login(IMAPSession *session,
                }
        }
 
-       log_print(LOG_PROTOCOL, "IMAP4> Logging %s to %s using %s\n", 
+       log_print(LOG_PROTOCOL, "IMAP> Logging %s to %s using %s\n", 
                        user,
                        SESSION(session)->server,
                        type);
        r = imap_threaded_login(session->folder, user, pass, type);
        if (r != MAILIMAP_NO_ERROR) {
                imap_handle_error(SESSION(session), NULL, r);
-               log_print(LOG_PROTOCOL, "IMAP4< Error logging in to %s\n",
+               log_print(LOG_PROTOCOL, "IMAP< Error logging in to %s\n",
                                SESSION(session)->server);
                ok = r;
        } else {
-               log_print(LOG_PROTOCOL, "IMAP4< Login to %s successful\n",
+               log_print(LOG_PROTOCOL, "IMAP< Login to %s successful\n",
                                SESSION(session)->server);
                ok = MAILIMAP_NO_ERROR;
        }
@@ -4159,7 +4196,7 @@ static gint imap_cmd_starttls(IMAPSession *session)
                SESSION(session)->server, SESSION(session)->port);
        if (r != MAILIMAP_NO_ERROR) {
                imap_handle_error(SESSION(session), NULL, r);
-               debug_print("starttls err %d\n", r);
+               debug_print("STARTTLS err %d\n", r);
                return r;
        }
        return MAILIMAP_NO_ERROR;
@@ -4396,13 +4433,10 @@ static gint imap_cmd_store(IMAPSession *session,
        return MAILIMAP_NO_ERROR;
 }
 
-static gint imap_cmd_expunge(IMAPSession *session, gboolean do_expunge)
+static gint imap_cmd_expunge(IMAPSession *session)
 {
        int r;
        
-       if (!do_expunge)
-               return MAILIMAP_NO_ERROR;
-
        if (prefs_common.work_offline && 
            !inc_offline_should_override(FALSE,
                _("Claws Mail needs network access in order "
@@ -4425,7 +4459,7 @@ gint imap_expunge(Folder *folder, FolderItem *item)
        if (session == NULL)
                return -1;
        
-       return imap_cmd_expunge(session, TRUE);
+       return imap_cmd_expunge(session);
 }
 
 static void imap_path_separator_subst(gchar *str, gchar separator)
@@ -4464,11 +4498,11 @@ static gboolean imap_rename_folder_func(GNode *node, gpointer data)
        }
 
        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);
@@ -4546,8 +4580,6 @@ 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;
 
 }
@@ -4602,11 +4634,10 @@ gint imap_get_num_list(Folder *folder, FolderItem *_item, GSList **msgnum_list,
        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..."),
@@ -4627,6 +4658,9 @@ 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);
@@ -5021,7 +5055,7 @@ static gint imap_remove_msg(Folder *folder, FolderItem *item, gint uid)
                return ok;
        }
 
-       ok = imap_cmd_expunge(session, folder->account->imap_use_trash);
+       ok = imap_cmd_expunge(session);
 
        if (ok != MAILIMAP_NO_ERROR) {
                log_warning(LOG_PROTOCOL, _("can't expunge\n"));
@@ -5071,10 +5105,10 @@ static gboolean flag_ok(IMAPFolderItem *item, guint flag)
 /*
  * NEW and DELETED flags are not syncronized
  * - The NEW/RECENT flags in IMAP folders can not really be directly
- *   modified by Sylpheed
- * - The DELETE/DELETED flag in IMAP and Sylpheed don't have the same
+ *   modified by Claws Mail
+ * - The DELETE/DELETED flag in IMAP and Claws Mail do not have the same
  *   meaning, in IMAP it always removes the messages from the FolderItem
- *   in Sylpheed it can mean to move the message to trash
+ *   in Claws Mail it can mean to move the message to Trash
  */
 
 typedef struct _get_flags_data {
@@ -5406,7 +5440,7 @@ 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);
 
@@ -6055,7 +6089,7 @@ static Folder     *imap_folder_new        (const gchar    *name,
                        _("You have one or more IMAP accounts "
                          "defined. However this version of "
                          "Claws Mail has been built without "
-                         "IMAP support; your IMAP account(s) are "
+                         "IMAP support; your IMAP accounts are "
                          "disabled.\n\n"
                          "You probably need to "
                          "install libetpan and recompile "
@@ -6090,7 +6124,7 @@ FolderClass *imap_get_class(void)
        if (imap_class.idstr == NULL) {
                imap_class.type = F_IMAP;
                imap_class.idstr = "imap";
-               imap_class.uistr = "IMAP4";
+               imap_class.uistr = "IMAP";
 
                imap_class.new_folder = imap_folder_new;
                imap_class.create_tree = imap_create_tree;