sync with 0.8.8cvs5
[claws.git] / src / imap.c
index 93d24e8aae22ea49ae7cc1725e6654a18f5fdb41..ba4ac76b7b298f95182788287002db8bf36b70dd 100644 (file)
@@ -1,6 +1,6 @@
 /*
  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
- * Copyright (C) 1999-2002 Hiroyuki Yamamoto
+ * Copyright (C) 1999-2003 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
@@ -31,8 +31,8 @@
 #include <unistd.h>
 #include <ctype.h>
 #include <time.h>
-#if HAVE_LIBJCONV
-#  include <jconv.h>
+#if HAVE_ICONV
+#  include <iconv.h>
 #endif
 
 #include "intl.h"
 #include "procmsg.h"
 #include "procheader.h"
 #include "folder.h"
-#include "statusbar.h"
 #include "prefs_account.h"
 #include "codeconv.h"
 #include "utils.h"
 #include "inputdialog.h"
+#include "log.h"
 
 #define IMAP4_PORT     143
-#if USE_SSL
+#if USE_OPENSSL
 #define IMAPS_PORT     993
 #endif
 
        }                                                       \
 }
 
+struct _IMAPFolderItem
+{
+       FolderItem item;
+
+       guint lastuid;
+       GSList *uid_list;
+};
+
 static GList *session_list = NULL;
 
 static gint imap_cmd_count = 0;
@@ -77,13 +85,18 @@ static void imap_folder_init                (Folder         *folder,
                                         const gchar    *name,
                                         const gchar    *path);
 
+static FolderItem *imap_folder_item_new        (Folder         *folder);
+static void imap_folder_item_destroy   (Folder         *folder,
+                                        FolderItem     *item);
+
 static IMAPSession *imap_session_get   (Folder         *folder);
 
 static gint imap_scan_tree_recursive   (IMAPSession    *session,
-                                        FolderItem     *item,
-                                        IMAPNameSpace  *namespace);
-static GSList *imap_parse_list         (IMAPSession    *session,
-                                        const gchar    *real_path);
+                                        FolderItem     *item);
+static GSList *imap_parse_list         (Folder         *folder,
+                                        IMAPSession    *session,
+                                        const gchar    *real_path,
+                                        gchar          *separator);
 
 static void imap_create_missing_folders        (Folder                 *folder);
 static FolderItem *imap_create_special_folder
@@ -95,10 +108,12 @@ static gint imap_do_copy           (Folder         *folder,
                                         FolderItem     *dest,
                                         MsgInfo        *msginfo,
                                         gboolean        remove_source);
+#if 0
 static gint imap_do_copy_msgs_with_dest        (Folder         *folder,
                                         FolderItem     *dest, 
                                         GSList         *msglist,
                                         gboolean        remove_source);
+#endif
 
 static GSList *imap_get_uncached_messages      (IMAPSession    *session,
                                                 FolderItem     *item,
@@ -110,19 +125,29 @@ static GSList *imap_delete_cached_messages        (GSList         *mlist,
                                                 guint32         last_uid);
 static void imap_delete_all_cached_messages    (FolderItem     *item);
 
-#if USE_SSL
+#if USE_OPENSSL
 static SockInfo *imap_open             (const gchar    *server,
                                         gushort         port,
-                                        gboolean        use_ssl);
+                                        SSLType         ssl_type);
 #else
 static SockInfo *imap_open             (const gchar    *server,
                                         gushort         port);
 #endif
 
+#if USE_OPENSSL
+static SockInfo *imap_open_tunnel(const gchar *server,
+                                 const gchar *tunnelcmd,
+                                 SSLType ssl_type);
+#else
 static SockInfo *imap_open_tunnel(const gchar *server,
                                  const gchar *tunnelcmd);
+#endif
 
+#if USE_OPENSSL
+static SockInfo *imap_init_sock(SockInfo *sock, SSLType         ssl_type);
+#else
 static SockInfo *imap_init_sock(SockInfo *sock);
+#endif
 
 static gint imap_set_message_flags     (IMAPSession    *session,
                                         guint32         first_uid,
@@ -150,8 +175,12 @@ static gint imap_status                    (IMAPSession    *session,
 
 static void imap_parse_namespace               (IMAPSession    *session,
                                                 IMAPFolder     *folder);
+static void imap_get_namespace_by_list         (IMAPSession    *session,
+                                                IMAPFolder     *folder);
 static IMAPNameSpace *imap_find_namespace      (IMAPFolder     *folder,
                                                 const gchar    *path);
+static gchar imap_get_path_separator           (IMAPFolder     *folder,
+                                                const gchar    *path);
 static gchar *imap_get_real_path               (IMAPFolder     *folder,
                                                 const gchar    *path);
 
@@ -160,21 +189,15 @@ static gchar *imap_parse_atom             (SockInfo       *sock,
                                         gchar          *dest,
                                         gint            dest_len,
                                         GString        *str);
-static gchar *imap_parse_one_address   (SockInfo       *sock,
-                                        gchar          *start,
-                                        gchar          *out_from_str,
-                                        gchar          *out_fromname_str,
-                                        GString        *str);
-static gchar *imap_parse_address       (SockInfo       *sock,
-                                        gchar          *start,
-                                        gchar         **out_from_str,
-                                        gchar         **out_fromname_str,
-                                        GString        *str);
 static MsgFlags imap_parse_flags       (const gchar    *flag_str);
 static MsgInfo *imap_parse_envelope    (SockInfo       *sock,
+                                        FolderItem     *item,
                                         GString        *line_str);
-static gint imap_greeting              (SockInfo *sock,
-                                        gboolean *is_preauth);
+static gint imap_greeting              (SockInfo       *sock,
+                                        gboolean       *is_preauth);
+static void imap_get_capability                (Session        *session);
+static gboolean imap_has_capability    (IMAPSession    *session,
+                                        const gchar    *cap);
 
 /* low-level IMAP4rev1 commands */
 static gint imap_cmd_login     (SockInfo       *sock,
@@ -182,6 +205,7 @@ static gint imap_cmd_login  (SockInfo       *sock,
                                 const gchar    *pass);
 static gint imap_cmd_logout    (SockInfo       *sock);
 static gint imap_cmd_noop      (SockInfo       *sock);
+static gint imap_cmd_starttls  (SockInfo       *sock);
 static gint imap_cmd_namespace (SockInfo       *sock,
                                 gchar         **ns_str);
 static gint imap_cmd_list      (SockInfo       *sock,
@@ -227,9 +251,10 @@ static gint imap_cmd_fetch (SockInfo       *sock,
 static gint imap_cmd_append    (SockInfo       *sock,
                                 const gchar    *destfolder,
                                 const gchar    *file);
-static gint imap_cmd_copy      (SockInfo       *sock,
-                                guint32         uid,
-                                const gchar    *destfolder);
+static gint imap_cmd_copy      (IMAPSession    *session,
+                                gint32         msgnum,
+                                const gchar    *destfolder,
+                                gint32         *new_uid);
 static gint imap_cmd_store     (SockInfo       *sock,
                                 guint32         first_uid,
                                 guint32         last_uid,
@@ -254,11 +279,9 @@ static gchar *get_quoted                   (const gchar    *src,
                                                 gchar          *dest,
                                                 gint            len);
 static gchar *search_array_contain_str         (GPtrArray      *array,
-                                                gchar          *str);
+                                                const gchar    *str);
 static gchar *search_array_str                 (GPtrArray      *array,
-                                                gchar          *str);
-static gchar *search_array_starts              (GPtrArray *array,
-                                                const gchar *str);
+                                                const gchar    *str);
 static void imap_path_separator_subst          (gchar          *str,
                                                 gchar           separator);
 
@@ -267,6 +290,14 @@ static gchar *imap_locale_to_modified_utf7 (const gchar    *from);
 
 static gboolean imap_rename_folder_func                (GNode          *node,
                                                 gpointer        data);
+gint imap_get_num_list                         (Folder         *folder,
+                                                FolderItem     *item,
+                                                GSList        **list);
+MsgInfo *imap_get_msginfo                      (Folder         *folder,
+                                                FolderItem     *item,
+                                                gint            num);
+gboolean imap_check_msgnum_validity            (Folder         *folder,
+                                                FolderItem     *item);
 
 Folder *imap_folder_new(const gchar *name, const gchar *path)
 {
@@ -278,65 +309,145 @@ Folder *imap_folder_new(const gchar *name, const gchar *path)
        return folder;
 }
 
-void imap_folder_destroy(IMAPFolder *folder)
+void imap_folder_destroy(Folder *folder)
 {
+       gchar *dir;
+
+       dir = folder_get_path(folder);
+       if (is_dir_exist(dir))
+               remove_dir_recursive(dir);
+       g_free(dir);
+
        folder_remote_folder_destroy(REMOTE_FOLDER(folder));
 }
 
 static void imap_folder_init(Folder *folder, const gchar *name,
                             const gchar *path)
 {
-       folder_remote_folder_init(folder, name, path);
-
        folder->type = F_IMAP;
 
+       folder_remote_folder_init((Folder *)folder, name, path);
+
+/*
        folder->get_msg_list        = imap_get_msg_list;
-       folder->fetch_msg           = imap_fetch_msg;
-       folder->add_msg             = imap_add_msg;
-       folder->move_msg            = imap_move_msg;
-       folder->move_msgs_with_dest = imap_move_msgs_with_dest;
-       folder->copy_msg            = imap_copy_msg;
-       folder->copy_msgs_with_dest = imap_copy_msgs_with_dest;
-       folder->remove_msg          = imap_remove_msg;
-       folder->remove_all_msg      = imap_remove_all_msg;
-       folder->is_msg_changed      = imap_is_msg_changed;
+*/
+       folder->item_new              = imap_folder_item_new;
+       folder->item_destroy          = imap_folder_item_destroy;
+       folder->fetch_msg             = imap_fetch_msg;
+       folder->add_msg               = imap_add_msg;
+       folder->move_msg              = imap_move_msg;
+/*
+       folder->move_msgs_with_dest   = imap_move_msgs_with_dest;
+*/
+       folder->copy_msg              = imap_copy_msg;
+/*
+       folder->copy_msgs_with_dest   = imap_copy_msgs_with_dest;
+*/
+       folder->remove_msg            = imap_remove_msg;
+       folder->remove_msgs           = imap_remove_msgs;
+       folder->remove_all_msg        = imap_remove_all_msg;
+       folder->is_msg_changed        = imap_is_msg_changed;
+/*
        folder->scan                = imap_scan_folder;
-       folder->scan_tree           = imap_scan_tree;
-       folder->create_tree         = imap_create_tree;
-       folder->create_folder       = imap_create_folder;
-       folder->rename_folder       = imap_rename_folder;
-       folder->remove_folder       = imap_remove_folder;
+*/
+       folder->scan_tree             = imap_scan_tree;
+       folder->create_tree           = imap_create_tree;
+       folder->create_folder         = imap_create_folder;
+       folder->rename_folder         = imap_rename_folder;
+       folder->remove_folder         = imap_remove_folder;
+       folder->destroy               = imap_folder_destroy;
+       folder->check_msgnum_validity = imap_check_msgnum_validity;
+
+       folder->get_num_list          = imap_get_num_list;
+       folder->get_msginfo           = imap_get_msginfo;
+}
+
+static FolderItem *imap_folder_item_new(Folder *folder)
+{
+       IMAPFolderItem *item;
+       
+       item = g_new0(IMAPFolderItem, 1);
+       item->lastuid = 0;
+       item->uid_list = NULL;
+
+       return (FolderItem *)item;
+}
+
+static void imap_folder_item_destroy(Folder *folder, FolderItem *_item)
+{
+       IMAPFolderItem *item = (IMAPFolderItem *)_item;
+
+       g_return_if_fail(item != NULL);
+       g_slist_free(item->uid_list);
+
+       g_free(_item);
+}
+
+static gboolean imap_reset_uid_lists_func(GNode *node, gpointer data)
+{
+       IMAPFolderItem *item = (IMAPFolderItem *)node->data;
+       
+       item->lastuid = 0;
+       g_slist_free(item->uid_list);
+       item->uid_list = NULL;
+       
+       return FALSE;
+}
+
+static void imap_reset_uid_lists(Folder *folder)
+{
+       if(folder->node == NULL)
+               return;
+       
+       /* Destroy all uid lists and rest last uid */
+       g_node_traverse(folder->node, G_IN_ORDER, G_TRAVERSE_ALL, -1, imap_reset_uid_lists_func, NULL); 
 }
 
 static IMAPSession *imap_session_get(Folder *folder)
 {
        RemoteFolder *rfolder = REMOTE_FOLDER(folder);
+       Session *session = NULL;
        gushort port;
 
        g_return_val_if_fail(folder != NULL, NULL);
        g_return_val_if_fail(folder->type == F_IMAP, NULL);
        g_return_val_if_fail(folder->account != NULL, NULL);
 
-#if USE_SSL
+#if USE_OPENSSL
        port = folder->account->set_imapport ? folder->account->imapport
-               : folder->account->ssl_imap ? IMAPS_PORT : IMAP4_PORT;
+               : folder->account->ssl_imap == SSL_TUNNEL
+               ? IMAPS_PORT : IMAP4_PORT;
 #else
        port = folder->account->set_imapport ? folder->account->imapport
                : IMAP4_PORT;
 #endif
 
-       if (!rfolder->session) {
-               rfolder->session =
-                       imap_session_new(folder->account);
-               if (rfolder->session) {
-                       imap_parse_namespace(IMAP_SESSION(rfolder->session),
-                                            IMAP_FOLDER(folder));
-                       rfolder->session->last_access_time = time(NULL);
-               }
-               statusbar_pop_all();
-               return IMAP_SESSION(rfolder->session);
+       /* Make sure we have a session */
+       if (rfolder->session != NULL) {
+               session = rfolder->session;
+       } else {
+               imap_reset_uid_lists(folder);
+               session = imap_session_new(folder->account);
+       }
+       if(session == NULL)
+               return NULL;
+
+       /* Get CAPABILITY */
+       imap_get_capability(session); 
+
+       /* Make sure session is authenticated */
+       if (!IMAP_SESSION(session)->authenticated)
+               imap_session_authenticate(IMAP_SESSION(session), folder->account);
+       if (!IMAP_SESSION(session)->authenticated) {
+               session_destroy(session);
+               rfolder->session = NULL;
+               return NULL;
        }
 
+       /* Make sure we have parsed the IMAP namespace */
+       imap_parse_namespace(IMAP_SESSION(session),
+                            IMAP_FOLDER(folder));
+
        /* I think the point of this code is to avoid sending a
         * keepalive if we've used the session recently and therefore
         * think it's still alive.  Unfortunately, most of the code
@@ -345,28 +456,36 @@ static IMAPSession *imap_session_get(Folder *folder)
         * A better solution than sending a NOOP every time would be
         * for every command to be prepared to retry until it is
         * successfully sent. -- mbp */
-       if (time(NULL) - rfolder->session->last_access_time < SESSION_TIMEOUT) {
-               rfolder->session->last_access_time = time(NULL);
-               statusbar_pop_all();
-               return IMAP_SESSION(rfolder->session);
+       if (time(NULL) - session->last_access_time > SESSION_TIMEOUT) {
+               /* verify that the session is still alive */
+               if (imap_cmd_noop(session->sock) != IMAP_SUCCESS) {
+                       /* Check if this is the first try to establish a
+                          connection, if yes we don't try to reconnect */
+                       if (rfolder->session == NULL) {
+                               log_warning(_("Connecting %s:%d failed"),
+                                           folder->account->recv_server, port);
+                               session_destroy(session);
+                               session = NULL;
+                       } else {
+                               log_warning(_("IMAP4 connection to %s:%d has been"
+                                             " disconnected. Reconnecting...\n"),
+                                           folder->account->recv_server, port);
+                               session_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
+                                  endless loop */
+                               rfolder->session = NULL;
+                               session = SESSION(imap_session_get(folder));
+                       }
+               }
        }
 
-       if (imap_cmd_noop(rfolder->session->sock) != IMAP_SUCCESS) {
-               log_warning(_("IMAP4 connection to %s:%d has been"
-                             " disconnected. Reconnecting...\n"),
-                           folder->account->recv_server, port);
-               session_destroy(rfolder->session);
-               rfolder->session =
-                       imap_session_new(folder->account);
-               if (rfolder->session)
-                       imap_parse_namespace(IMAP_SESSION(rfolder->session),
-                                            IMAP_FOLDER(folder));
+       rfolder->session = session;
+       if (session) {
+               session->last_access_time = time(NULL);
        }
-
-       if (rfolder->session)
-               rfolder->session->last_access_time = time(NULL);
-       statusbar_pop_all();
-       return IMAP_SESSION(rfolder->session);
+       return IMAP_SESSION(session);
 }
 
 Session *imap_session_new(const PrefsAccount *account)
@@ -374,16 +493,15 @@ Session *imap_session_new(const PrefsAccount *account)
        IMAPSession *session;
        SockInfo *imap_sock;
        gushort port;
-       gchar *pass;
        gboolean is_preauth;
 
-#ifdef USE_SSL
+#ifdef USE_OPENSSL
        /* FIXME: IMAP over SSL only... */ 
-       gboolean use_ssl;
+       SSLType ssl_type;
 
        port = account->set_imapport ? account->imapport
                : account->ssl_imap ? IMAPS_PORT : IMAP4_PORT;
-       use_ssl = account->ssl_imap ? TRUE : FALSE;     
+       ssl_type = account->ssl_imap ? TRUE : FALSE;    
 #else
        port = account->set_imapport ? account->imapport
                : IMAP4_PORT;
@@ -391,8 +509,14 @@ Session *imap_session_new(const PrefsAccount *account)
 
        if (account->set_tunnelcmd) {
                log_message(_("creating tunneled IMAP4 connection\n"));
+#if USE_OPENSSL
+               if ((imap_sock = imap_open_tunnel(account->recv_server, 
+                                                 account->tunnelcmd,
+                                                 ssl_type)) == NULL)
+#else
                if ((imap_sock = imap_open_tunnel(account->recv_server, 
                                                  account->tunnelcmd)) == NULL)
+#endif
                        return NULL;
        } else {
                g_return_val_if_fail(account->recv_server != NULL, NULL);
@@ -400,9 +524,9 @@ Session *imap_session_new(const PrefsAccount *account)
                log_message(_("creating IMAP4 connection to %s:%d ...\n"),
                            account->recv_server, port);
                
-#if USE_SSL
+#if USE_OPENSSL
                if ((imap_sock = imap_open(account->recv_server, port,
-                                          use_ssl)) == NULL)
+                                          ssl_type)) == NULL)
 #else
                if ((imap_sock = imap_open(account->recv_server, port)) == NULL)
 #endif
@@ -410,28 +534,12 @@ Session *imap_session_new(const PrefsAccount *account)
        }
 
        /* Only need to log in if the connection was not PREAUTH */
-       imap_greeting(imap_sock, &is_preauth);
+       if (imap_greeting(imap_sock, &is_preauth) != IMAP_SUCCESS) {
+               sock_close(imap_sock);
+               return NULL;
+       }
        log_message("IMAP connection is %s-authenticated\n",
                    (is_preauth) ? "pre" : "un");
-       if (!is_preauth) {
-               g_return_val_if_fail(account->userid != NULL, NULL);
-
-               pass = account->passwd;
-               if (!pass) {
-                       gchar *tmp_pass;
-                       tmp_pass = input_dialog_query_password(account->recv_server, account->userid);
-                       if (!tmp_pass)
-                               return NULL;
-                       Xstrdup_a(pass, tmp_pass, {g_free(tmp_pass); return NULL;});
-                       g_free(tmp_pass);
-               }
-
-               if (imap_cmd_login(imap_sock, account->userid, pass) != IMAP_SUCCESS) {
-                       imap_cmd_logout(imap_sock);
-                       sock_close(imap_sock);
-                       return NULL;
-               }
-       }
 
        session = g_new(IMAPSession, 1);
        SESSION(session)->type             = SESSION_IMAP;
@@ -441,19 +549,51 @@ Session *imap_session_new(const PrefsAccount *account)
        SESSION(session)->phase            = SESSION_READY;
        SESSION(session)->last_access_time = time(NULL);
        SESSION(session)->data             = NULL;
+
+       SESSION(session)->destroy          = imap_session_destroy;
+
+       session->capability = NULL;
+
        session->mbox = NULL;
+       session->authenticated = is_preauth;
 
        session_list = g_list_append(session_list, session);
 
        return SESSION(session);
 }
 
-void imap_session_destroy(IMAPSession *session)
+void imap_session_authenticate(IMAPSession *session, const PrefsAccount *account)
+{
+       gchar *pass;
+
+       g_return_if_fail(account->userid != NULL);
+
+       pass = account->passwd;
+       if (!pass) {
+               gchar *tmp_pass;
+               tmp_pass = input_dialog_query_password(account->recv_server, account->userid);
+               if (!tmp_pass)
+                       return;
+               Xstrdup_a(pass, tmp_pass, {g_free(tmp_pass); return;});
+               g_free(tmp_pass);
+       }
+
+       if (imap_cmd_login(SESSION(session)->sock, account->userid, pass) != IMAP_SUCCESS) {
+               imap_cmd_logout(SESSION(session)->sock);
+               return;
+       }
+
+       session->authenticated = TRUE;
+}
+
+void imap_session_destroy(Session *session)
 {
-       sock_close(SESSION(session)->sock);
-       SESSION(session)->sock = NULL;
+       sock_close(session->sock);
+       session->sock = NULL;
 
-       g_free(session->mbox);
+       g_free(IMAP_SESSION(session)->mbox);
+
+       g_strfreev(IMAP_SESSION(session)->capability);
 
        session_list = g_list_remove(session_list, session);
 }
@@ -487,9 +627,8 @@ GSList *imap_get_msg_list(Folder *folder, FolderItem *item, gboolean use_cache)
 
        if (!session) {
                mlist = procmsg_read_cache(item, FALSE);
-               item->last_num = procmsg_get_last_num_in_cache(mlist);
+               item->last_num = procmsg_get_last_num_in_msg_list(mlist);
                procmsg_set_flags(mlist, item);
-               statusbar_pop_all();
                return mlist;
        }
 
@@ -506,7 +645,6 @@ GSList *imap_get_msg_list(Folder *folder, FolderItem *item, gboolean use_cache)
                        last_uid = first_uid;
        } else {
                imap_delete_all_cached_messages(item);
-               statusbar_pop_all();
                return NULL;
        }
 
@@ -515,7 +653,7 @@ GSList *imap_get_msg_list(Folder *folder, FolderItem *item, gboolean use_cache)
 
                mlist = procmsg_read_cache(item, FALSE);
                procmsg_set_flags(mlist, item);
-               cache_last = procmsg_get_last_num_in_cache(mlist);
+               cache_last = procmsg_get_last_num_in_msg_list(mlist);
 
                /* calculating the range of envelope to get */
                if (item->mtime != uid_validity) {
@@ -558,7 +696,6 @@ GSList *imap_get_msg_list(Folder *folder, FolderItem *item, gboolean use_cache)
        item->last_num = last_uid;
 
 catch:
-       statusbar_pop_all();
        return mlist;
 }
 
@@ -580,7 +717,7 @@ gchar *imap_fetch_msg(Folder *folder, FolderItem *item, gint uid)
        g_free(path);
  
        if (is_file_exist(filename)) {
-               debug_print(_("message %d has been already cached.\n"), uid);
+               debug_print("message %d has been already cached.\n", uid);
                return filename;
        }
 
@@ -592,20 +729,17 @@ gchar *imap_fetch_msg(Folder *folder, FolderItem *item, gint uid)
 
        ok = imap_select(session, IMAP_FOLDER(folder), item->path,
                         NULL, NULL, NULL, NULL);
-       statusbar_pop_all();
        if (ok != IMAP_SUCCESS) {
-               g_warning(_("can't select mailbox %s\n"), item->path);
+               g_warning("can't select mailbox %s\n", item->path);
                g_free(filename);
                return NULL;
        }
 
-       debug_print(_("getting message %d...\n"), uid);
+       debug_print("getting message %d...\n", uid);
        ok = imap_cmd_fetch(SESSION(session)->sock, (guint32)uid, filename);
 
-       statusbar_pop_all();
-
        if (ok != IMAP_SUCCESS) {
-               g_warning(_("can't fetch message %d\n"), uid);
+               g_warning("can't fetch message %d\n", uid);
                g_free(filename);
                return NULL;
        }
@@ -631,9 +765,8 @@ gint imap_add_msg(Folder *folder, FolderItem *dest, const gchar *file,
 
        ok = imap_status(session, IMAP_FOLDER(folder), dest->path,
                         &messages, &recent, &uid_next, &uid_validity, &unseen);
-       statusbar_pop_all();
        if (ok != IMAP_SUCCESS) {
-               g_warning(_("can't append message %s\n"), file);
+               g_warning("can't append message %s\n", file);
                return -1;
        }
 
@@ -642,7 +775,7 @@ gint imap_add_msg(Folder *folder, FolderItem *dest, const gchar *file,
        g_free(destdir);
 
        if (ok != IMAP_SUCCESS) {
-               g_warning(_("can't append message %s\n"), file);
+               g_warning("can't append message %s\n", file);
                return -1;
        }
 
@@ -659,8 +792,11 @@ static gint imap_do_copy(Folder *folder, FolderItem *dest, MsgInfo *msginfo,
 {
        gchar *destdir;
        IMAPSession *session;
+       IMAPFlags iflags = 0;
+       gint messages, recent, unseen;
+       guint32 newuid = 0, uid_validity;
        gint ok;
-
+    
        g_return_val_if_fail(folder != NULL, -1);
        g_return_val_if_fail(folder->type == F_IMAP, -1);
        g_return_val_if_fail(dest != NULL, -1);
@@ -670,22 +806,39 @@ static gint imap_do_copy(Folder *folder, FolderItem *dest, MsgInfo *msginfo,
        if (!session) return -1;
 
        if (msginfo->folder == dest) {
-               g_warning(_("the src folder is identical to the dest.\n"));
+               g_warning("the src folder is identical to the dest.\n");
                return -1;
        }
 
+       /* if we don't have UIDPLUS we get UID-NEXT and hope that the
+          message really gets this uid */
+       if (!imap_has_capability(session, "UIDPLUS")) {
+               ok = imap_status(session, IMAP_FOLDER(folder), dest->path,
+                                &messages, &recent, &newuid, &uid_validity, &unseen);
+               if (ok != IMAP_SUCCESS) {
+                       g_warning("can't copy message\n");
+                       return -1;
+               }
+       }
+
        destdir = imap_get_real_path(IMAP_FOLDER(folder), dest->path);
 
+       /* ensure source folder selected */
+       ok = imap_select(session, IMAP_FOLDER(folder), msginfo->folder->path,
+                        NULL, NULL, NULL, NULL);
+       if (ok != IMAP_SUCCESS)
+               return -1;
+        
        if (remove_source)
-               debug_print(_("Moving message %s%c%d to %s ...\n"),
+               debug_print("Moving message %s%c%d to %s ...\n",
                            msginfo->folder->path, G_DIR_SEPARATOR,
                            msginfo->msgnum, destdir);
        else
-               debug_print(_("Copying message %s%c%d to %s ...\n"),
+               debug_print("Copying message %s%c%d to %s ...\n",
                            msginfo->folder->path, G_DIR_SEPARATOR,
                            msginfo->msgnum, destdir);
 
-       ok = imap_cmd_copy(SESSION(session)->sock, msginfo->msgnum, destdir);
+       ok = imap_cmd_copy(session, msginfo->msgnum, destdir, &newuid);
 
        if (ok == IMAP_SUCCESS && remove_source) {
                imap_set_message_flags(session, msginfo->msgnum, msginfo->msgnum,
@@ -693,15 +846,30 @@ static gint imap_do_copy(Folder *folder, FolderItem *dest, MsgInfo *msginfo,
                ok = imap_cmd_expunge(SESSION(session)->sock);
        }
 
+       /* get the dest folder to set the flags */
+       if (newuid) {
+               ok = imap_select(session, IMAP_FOLDER(folder), dest->path,
+                                NULL, NULL, NULL, NULL);
+               if (ok != IMAP_SUCCESS)         /* the folder disappeared? */
+                       return -1;
+
+               if (msginfo->flags.perm_flags & MSG_MARKED)  iflags |= IMAP_FLAG_FLAGGED;
+               if (msginfo->flags.perm_flags & MSG_REPLIED) iflags |= IMAP_FLAG_ANSWERED;
+               if (iflags)
+                       if (imap_set_message_flags(session, newuid, newuid, iflags, TRUE)
+                           != IMAP_SUCCESS)
+                               newuid = 0;
+       }
+
        g_free(destdir);
-       statusbar_pop_all();
 
        if (ok == IMAP_SUCCESS)
-               return 0;
+               return newuid;
        else
                return -1;
 }
 
+#if 0
 static gint imap_do_copy_msgs_with_dest(Folder *folder, FolderItem *dest, 
                                        GSList *msglist,
                                        gboolean remove_source)
@@ -725,21 +893,24 @@ static gint imap_do_copy_msgs_with_dest(Folder *folder, FolderItem *dest,
                msginfo = (MsgInfo *)cur->data;
 
                if (msginfo->folder == dest) {
-                       g_warning(_("the src folder is identical to the dest.\n"));
+                       g_warning("the src folder is identical to the dest.\n");
                        continue;
                }
 
+               /* ensure source folder selected */
+               ok = imap_select(session, IMAP_FOLDER(folder), 
+                                msginfo->folder->path, NULL, NULL, NULL, NULL);
+        
                if (remove_source)
-                       debug_print(_("Moving message %s%c%d to %s ...\n"),
+                       debug_print("Moving message %s%c%d to %s ...\n",
                                    msginfo->folder->path, G_DIR_SEPARATOR,
                                    msginfo->msgnum, destdir);
                else
-                       debug_print(_("Copying message %s%c%d to %s ...\n"),
+                       debug_print("Copying message %s%c%d to %s ...\n",
                                    msginfo->folder->path, G_DIR_SEPARATOR,
                                    msginfo->msgnum, destdir);
 
-               ok = imap_cmd_copy(SESSION(session)->sock, msginfo->msgnum,
-                                  destdir);
+               ok = imap_cmd_copy(session, msginfo, destdir);
 
                if (ok == IMAP_SUCCESS && remove_source) {
                        imap_set_message_flags
@@ -752,13 +923,13 @@ static gint imap_do_copy_msgs_with_dest(Folder *folder, FolderItem *dest,
                ok = imap_cmd_expunge(SESSION(session)->sock);
 
        g_free(destdir);
-       statusbar_pop_all();
 
        if (ok == IMAP_SUCCESS)
                return 0;
        else
                return -1;
 }
+#endif
 
 gint imap_move_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
 {
@@ -779,12 +950,16 @@ gint imap_move_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
        ret = imap_add_msg(folder, dest, srcfile, FALSE);
        g_free(srcfile);
 
-       if (ret == 0)
-               ret = folder_item_remove_msg(msginfo->folder, msginfo->msgnum);
-
+       if (ret != -1) {
+               if(folder_item_remove_msg(msginfo->folder, msginfo->msgnum)) {
+                       ret = -1;
+               }
+       }
+               
        return ret;
 }
 
+#if 0
 gint imap_move_msgs_with_dest(Folder *folder, FolderItem *dest, 
                              GSList *msglist)
 {
@@ -803,11 +978,12 @@ gint imap_move_msgs_with_dest(Folder *folder, FolderItem *dest,
        for (cur = msglist; cur != NULL; cur = cur->next) {
                msginfo = (MsgInfo *)cur->data;
                ret = imap_move_msg(folder, dest, msginfo);
-               if (ret != 0) break;
+               if (ret == -1) break;
        }
 
        return ret;
 }
+#endif
 
 gint imap_copy_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
 {
@@ -832,6 +1008,7 @@ gint imap_copy_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
        return ret;
 }
 
+#if 0
 gint imap_copy_msgs_with_dest(Folder *folder, FolderItem *dest, 
                              GSList *msglist)
 {
@@ -851,18 +1028,18 @@ gint imap_copy_msgs_with_dest(Folder *folder, FolderItem *dest,
        for (cur = msglist; cur != NULL; cur = cur->next) {
                msginfo = (MsgInfo *)cur->data;
                ret = imap_copy_msg(folder, dest, msginfo);
-               if (ret != 0) break;
+               if (ret == -1) break;
        }
 
        return ret;
 }
+#endif
 
 gint imap_remove_msg(Folder *folder, FolderItem *item, gint uid)
 {
-       gint exists, recent, unseen;
-       guint32 uid_validity;
        gint ok;
        IMAPSession *session;
+       gchar *dir;
 
        g_return_val_if_fail(folder != NULL, -1);
        g_return_val_if_fail(folder->type == F_IMAP, -1);
@@ -872,36 +1049,92 @@ gint imap_remove_msg(Folder *folder, FolderItem *item, gint uid)
        if (!session) return -1;
 
        ok = imap_select(session, IMAP_FOLDER(folder), item->path,
-                        &exists, &recent, &unseen, &uid_validity);
-       statusbar_pop_all();
+                        NULL, NULL, NULL, NULL);
        if (ok != IMAP_SUCCESS)
                return ok;
 
        ok = imap_set_message_flags
                (IMAP_SESSION(REMOTE_FOLDER(folder)->session),
                 (guint32)uid, (guint32)uid, IMAP_FLAG_DELETED, TRUE);
-       statusbar_pop_all();
        if (ok != IMAP_SUCCESS) {
                log_warning(_("can't set deleted flags: %d\n"), uid);
                return ok;
        }
 
        ok = imap_cmd_expunge(SESSION(session)->sock);
-       statusbar_pop_all();
        if (ok != IMAP_SUCCESS) {
                log_warning(_("can't expunge\n"));
                return ok;
        }
 
+       dir = folder_item_get_path(item);
+       if (is_dir_exist(dir))
+               remove_numbered_files(dir, uid, uid);
+       g_free(dir);
+
+       return IMAP_SUCCESS;
+}
+
+gint imap_remove_msgs(Folder *folder, FolderItem *item, GSList *msglist)
+{
+       gint ok;
+       IMAPSession *session;
+       gchar *dir;
+       MsgInfo *msginfo;
+       GSList *cur;
+       guint32 uid;
+
+       g_return_val_if_fail(folder != NULL, -1);
+       g_return_val_if_fail(folder->type == F_IMAP, -1);
+       g_return_val_if_fail(item != NULL, -1);
+       g_return_val_if_fail(msglist != NULL, -1);
+
+       session = imap_session_get(folder);
+       if (!session) return -1;
+
+       ok = imap_select(session, IMAP_FOLDER(folder), item->path,
+                        NULL, NULL, NULL, NULL);
+       if (ok != IMAP_SUCCESS)
+               return ok;
+
+       for (cur = msglist; cur != NULL; cur = cur->next) {
+               msginfo = (MsgInfo *)cur->data;
+               uid = msginfo->msgnum;
+               ok = imap_set_message_flags
+                       (IMAP_SESSION(REMOTE_FOLDER(folder)->session),
+                        uid, uid, IMAP_FLAG_DELETED, TRUE);
+               if (ok != IMAP_SUCCESS) {
+                       log_warning(_("can't set deleted flags: %d\n"), uid);
+                       return ok;
+               }
+       }
+
+       ok = imap_cmd_expunge(SESSION(session)->sock);
+       if (ok != IMAP_SUCCESS) {
+               log_warning(_("can't expunge\n"));
+               return ok;
+       }
+
+       dir = folder_item_get_path(item);
+       if (is_dir_exist(dir)) {
+               for (cur = msglist; cur != NULL; cur = cur->next) {
+                       msginfo = (MsgInfo *)cur->data;
+                       uid = msginfo->msgnum;
+                       remove_numbered_files(dir, uid, uid);
+               }
+       }
+       g_free(dir);
        return IMAP_SUCCESS;
 }
 
 gint imap_remove_all_msg(Folder *folder, FolderItem *item)
 {
-       gint exists, recent, unseen;
-       guint32 uid_validity;
+        gint exists, recent, unseen;
+        guint32 uid_validity;
        gint ok;
        IMAPSession *session;
+       gchar *dir;
 
        g_return_val_if_fail(folder != NULL, -1);
        g_return_val_if_fail(item != NULL, -1);
@@ -911,7 +1144,6 @@ gint imap_remove_all_msg(Folder *folder, FolderItem *item)
 
        ok = imap_select(session, IMAP_FOLDER(folder), item->path,
                         &exists, &recent, &unseen, &uid_validity);
-       statusbar_pop_all();
        if (ok != IMAP_SUCCESS)
                return ok;
        if (exists == 0)
@@ -920,19 +1152,22 @@ gint imap_remove_all_msg(Folder *folder, FolderItem *item)
        imap_cmd_gen_send(SESSION(session)->sock,
                          "STORE 1:%d +FLAGS (\\Deleted)", exists);
        ok = imap_cmd_ok(SESSION(session)->sock, NULL);
-       statusbar_pop_all();
        if (ok != IMAP_SUCCESS) {
                log_warning(_("can't set deleted flags: 1:%d\n"), exists);
                return ok;
        }
 
        ok = imap_cmd_expunge(SESSION(session)->sock);
-       statusbar_pop_all();
        if (ok != IMAP_SUCCESS) {
                log_warning(_("can't expunge\n"));
                return ok;
        }
 
+       dir = folder_item_get_path(item);
+       if (is_dir_exist(dir))
+               remove_all_numbered_files(dir);
+       g_free(dir);
+
        return IMAP_SUCCESS;
 }
 
@@ -957,7 +1192,6 @@ gint imap_scan_folder(Folder *folder, FolderItem *item)
 
        ok = imap_status(session, IMAP_FOLDER(folder), item->path,
                         &messages, &recent, &uid_next, &uid_validity, &unseen);
-       statusbar_pop_all();
        if (ok != IMAP_SUCCESS) return -1;
 
        item->new = unseen > 0 ? recent : 0;
@@ -971,48 +1205,41 @@ gint imap_scan_folder(Folder *folder, FolderItem *item)
 
 void imap_scan_tree(Folder *folder)
 {
-       IMAPFolder *imapfolder = IMAP_FOLDER(folder);
        FolderItem *item;
        IMAPSession *session;
-       IMAPNameSpace *namespace = NULL;
        gchar *root_folder = NULL;
 
        g_return_if_fail(folder != NULL);
        g_return_if_fail(folder->account != NULL);
 
        session = imap_session_get(folder);
-       if (!session) return;
-
-       if (imapfolder->namespace && imapfolder->namespace->data)
-               namespace = (IMAPNameSpace *)imapfolder->namespace->data;
-
-       if (folder->account->imap_dir && *folder->account->imap_dir) {
-               gchar *imap_dir;
-               Xstrdup_a(imap_dir, folder->account->imap_dir, return);
-               strtailchomp(imap_dir, '/');
-               root_folder = g_strconcat
-                       (namespace && namespace->name ? namespace->name : "",
-                        imap_dir, NULL);
-               if (namespace && namespace->separator)
-                       subst_char(root_folder, namespace->separator, '/');
+       if (!session) {
+               if (!folder->node) {
+                       folder_tree_destroy(folder);
+                       item = folder_item_new(folder, folder->name, NULL);
+                       item->folder = folder;
+                       folder->node = g_node_new(item);
+               }
+               return;
        }
 
-       if (root_folder)
+       if (folder->account->imap_dir && *folder->account->imap_dir) {
+               Xstrdup_a(root_folder, folder->account->imap_dir, return);
+               strtailchomp(root_folder, '/');
                debug_print("IMAP root directory: %s\n", root_folder);
+       }
 
-       folder_tree_destroy(folder);
-       item = folder_item_new(folder->name, root_folder);
+       item = folder_item_new(folder, folder->name, root_folder);
        item->folder = folder;
+       item->no_select = TRUE;
        folder->node = g_node_new(item);
-       g_free(root_folder);
 
-       imap_scan_tree_recursive(session, item, namespace);
+       imap_scan_tree_recursive(session, item);
 
        imap_create_missing_folders(folder);
 }
 
-static gint imap_scan_tree_recursive(IMAPSession *session, FolderItem *item,
-                                    IMAPNameSpace *namespace)
+static gint imap_scan_tree_recursive(IMAPSession *session, FolderItem *item)
 {
        Folder *folder;
        IMAPFolder *imapfolder;
@@ -1020,7 +1247,7 @@ static gint imap_scan_tree_recursive(IMAPSession *session, FolderItem *item,
        GSList *item_list, *cur;
        gchar *real_path;
        gchar *wildcard_path;
-       gchar separator = '/';
+       gchar separator;
        gchar wildcard[3];
 
        g_return_val_if_fail(item != NULL, -1);
@@ -1030,8 +1257,7 @@ static gint imap_scan_tree_recursive(IMAPSession *session, FolderItem *item,
        folder = FOLDER(item->folder);
        imapfolder = IMAP_FOLDER(folder);
 
-       if (namespace && namespace->separator)
-               separator = namespace->separator;
+       separator = imap_get_path_separator(imapfolder, item->path);
 
        if (item->folder->ui_func)
                item->folder->ui_func(folder, item, folder->ui_func_data);
@@ -1044,9 +1270,7 @@ static gint imap_scan_tree_recursive(IMAPSession *session, FolderItem *item,
        } else {
                wildcard[0] = '%';
                wildcard[1] = '\0';
-               real_path = g_strdup(namespace && namespace->name &&
-                                    strncmp(namespace->name, "INBOX", 5) != 0
-                                    ? namespace->name : "");
+               real_path = g_strdup("");
        }
 
        Xstrcat_a(wildcard_path, real_path, wildcard,
@@ -1057,7 +1281,7 @@ static gint imap_scan_tree_recursive(IMAPSession *session, FolderItem *item,
                          wildcard_path);
 
        strtailchomp(real_path, separator);
-       item_list = imap_parse_list(session, real_path);
+       item_list = imap_parse_list(folder, session, real_path, NULL);
        g_free(real_path);
 
        for (cur = item_list; cur != NULL; cur = cur->next) {
@@ -1093,17 +1317,18 @@ static gint imap_scan_tree_recursive(IMAPSession *session, FolderItem *item,
                if (new_item->no_select == FALSE)
                        imap_scan_folder(folder, new_item);
                if (new_item->no_sub == FALSE)
-                       imap_scan_tree_recursive(session, new_item, namespace);
+                       imap_scan_tree_recursive(session, new_item);
        }
 
        return IMAP_SUCCESS;
 }
 
-static GSList *imap_parse_list(IMAPSession *session, const gchar *real_path)
+static GSList *imap_parse_list(Folder *folder, IMAPSession *session,
+                              const gchar *real_path, gchar *separator)
 {
        gchar buf[IMAPBUFSIZE];
        gchar flags[256];
-       gchar separator[16];
+       gchar separator_str[16];
        gchar *p;
        gchar *name;
        gchar *loc_name, *loc_path;
@@ -1139,11 +1364,13 @@ static GSList *imap_parse_list(IMAPSession *session, const gchar *real_path)
                if (!p) continue;
                while (*p == ' ') p++;
 
-               p = strchr_cpy(p, ' ', separator, sizeof(separator));
+               p = strchr_cpy(p, ' ', separator_str, sizeof(separator_str));
                if (!p) continue;
-               extract_quote(separator, '"');
-               if (!strcmp(separator, "NIL"))
-                       separator[0] = '\0';
+               extract_quote(separator_str, '"');
+               if (!strcmp(separator_str, "NIL"))
+                       separator_str[0] = '\0';
+               if (separator)
+                       *separator = separator_str[0];
 
                buf[0] = '\0';
                while (*p == ' ') p++;
@@ -1152,18 +1379,18 @@ static GSList *imap_parse_list(IMAPSession *session, const gchar *real_path)
                                            buf, sizeof(buf), str);
                else
                        strncpy2(buf, p, sizeof(buf));
-               strtailchomp(buf, separator[0]);
+               strtailchomp(buf, separator_str[0]);
                if (buf[0] == '\0') continue;
                if (!strcmp(buf, real_path)) continue;
 
-               if (separator[0] != '\0')
-                       subst_char(buf, separator[0], '/');
+               if (separator_str[0] != '\0')
+                       subst_char(buf, separator_str[0], '/');
                name = g_basename(buf);
                if (name[0] == '.') continue;
 
                loc_name = imap_modified_utf7_to_locale(name);
                loc_path = imap_modified_utf7_to_locale(buf);
-               new_item = folder_item_new(loc_name, loc_path);
+               new_item = folder_item_new(folder, loc_name, loc_path);
                if (strcasestr(flags, "\\Noinferiors") != NULL)
                        new_item->no_sub = TRUE;
                if (strcmp(buf, "INBOX") != 0 &&
@@ -1178,7 +1405,6 @@ static GSList *imap_parse_list(IMAPSession *session, const gchar *real_path)
        }
 
        g_string_free(str, TRUE);
-       statusbar_pop_all();
 
        return item_list;
 }
@@ -1236,12 +1462,12 @@ 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'\n", 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\n", name);
                else
                        new_item->stype = stype;
        } else
@@ -1255,8 +1481,8 @@ FolderItem *imap_create_folder(Folder *folder, FolderItem *parent,
 {
        gchar *dirpath, *imap_path;
        IMAPSession *session;
-       IMAPNameSpace *namespace;
        FolderItem *new_item;
+       gchar separator;
        gchar *new_name;
        const gchar *p;
        gint ok;
@@ -1284,15 +1510,15 @@ FolderItem *imap_create_folder(Folder *folder, FolderItem *parent,
        } else
                dirpath = g_strdup(name);
 
-       strtailchomp(dirpath, '/');
+       /* keep trailing directory separator to create a folder that contains
+          sub folder */
        imap_path = imap_locale_to_modified_utf7(dirpath);
+       strtailchomp(dirpath, '/');
        Xstrdup_a(new_name, name, {g_free(dirpath); return NULL;});
        strtailchomp(new_name, '/');
-       namespace = imap_find_namespace(IMAP_FOLDER(folder), imap_path);
-       if (namespace && namespace->separator) {
-               imap_path_separator_subst(imap_path, namespace->separator);
-               subst_char(new_name, '/', namespace->separator);
-       }
+       separator = imap_get_path_separator(IMAP_FOLDER(folder), imap_path);
+       imap_path_separator_subst(imap_path, separator);
+       subst_char(new_name, '/', separator);
 
        if (strcmp(name, "INBOX") != 0) {
                GPtrArray *argbuf;
@@ -1302,11 +1528,11 @@ FolderItem *imap_create_folder(Folder *folder, FolderItem *parent,
                argbuf = g_ptr_array_new();
                ok = imap_cmd_list(SESSION(session)->sock, NULL, imap_path,
                                   argbuf);
-               statusbar_pop_all();
                if (ok != IMAP_SUCCESS) {
                        log_warning(_("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;
                }
@@ -1319,11 +1545,11 @@ FolderItem *imap_create_folder(Folder *folder, FolderItem *parent,
                                break;
                        }
                }
+               ptr_array_free_strings(argbuf);
                g_ptr_array_free(argbuf, TRUE);
 
                if (!exist) {
                        ok = imap_cmd_create(SESSION(session)->sock, imap_path);
-                       statusbar_pop_all();
                        if (ok != IMAP_SUCCESS) {
                                log_warning(_("can't create mailbox\n"));
                                g_free(imap_path);
@@ -1333,7 +1559,7 @@ FolderItem *imap_create_folder(Folder *folder, FolderItem *parent,
                }
        }
 
-       new_item = folder_item_new(new_name, dirpath);
+       new_item = folder_item_new(folder, new_name, dirpath);
        folder_item_append(parent, new_item);
        g_free(imap_path);
        g_free(dirpath);
@@ -1357,7 +1583,7 @@ gint imap_rename_folder(Folder *folder, FolderItem *item, const gchar *name)
        gchar *old_cache_dir;
        gchar *new_cache_dir;
        IMAPSession *session;
-       IMAPNameSpace *namespace;
+       gchar separator;
        gint ok;
        gint exists, recent, unseen;
        guint32 uid_validity;
@@ -1376,13 +1602,12 @@ gint imap_rename_folder(Folder *folder, FolderItem *item, const gchar *name)
        session->mbox = NULL;
        ok = imap_cmd_examine(SESSION(session)->sock, "INBOX",
                              &exists, &recent, &unseen, &uid_validity);
-       statusbar_pop_all();
        if (ok != IMAP_SUCCESS) {
                g_free(real_oldpath);
                return -1;
        }
 
-       namespace = imap_find_namespace(IMAP_FOLDER(folder), item->path);
+       separator = imap_get_path_separator(IMAP_FOLDER(folder), item->path);
        if (strchr(item->path, G_DIR_SEPARATOR)) {
                dirpath = g_dirname(item->path);
                newpath = g_strconcat(dirpath, G_DIR_SEPARATOR_S, name, NULL);
@@ -1391,11 +1616,9 @@ gint imap_rename_folder(Folder *folder, FolderItem *item, const gchar *name)
                newpath = g_strdup(name);
 
        real_newpath = imap_locale_to_modified_utf7(newpath);
-       if (namespace && namespace->separator)
-               imap_path_separator_subst(real_newpath, namespace->separator);
+       imap_path_separator_subst(real_newpath, separator);
 
        ok = imap_cmd_rename(SESSION(session)->sock, real_oldpath, real_newpath);
-       statusbar_pop_all();
        if (ok != IMAP_SUCCESS) {
                log_warning(_("can't rename mailbox: %s to %s\n"),
                            real_oldpath, real_newpath);
@@ -1454,14 +1677,12 @@ gint imap_remove_folder(Folder *folder, FolderItem *item)
 
        ok = imap_cmd_examine(SESSION(session)->sock, "INBOX",
                              &exists, &recent, &unseen, &uid_validity);
-       statusbar_pop_all();
        if (ok != IMAP_SUCCESS) {
                g_free(path);
                return -1;
        }
 
        ok = imap_cmd_delete(SESSION(session)->sock, path);
-       statusbar_pop_all();
        if (ok != IMAP_SUCCESS) {
                log_warning(_("can't delete mailbox\n"));
                g_free(path);
@@ -1519,12 +1740,12 @@ static GSList *imap_get_uncached_messages(IMAPSession *session,
                        g_free(tmp);
                        continue;
                }
-               /* log_print("IMAP4< %s\n", tmp); */
-               debug_print("IMAP4< %s\n", tmp);
+               log_print("IMAP4< %s\n", tmp);
                g_string_assign(str, tmp);
                g_free(tmp);
 
-               msginfo = imap_parse_envelope(SESSION(session)->sock, str);
+               msginfo = imap_parse_envelope
+                       (SESSION(session)->sock, item, str);
                if (!msginfo) {
                        log_warning(_("can't parse envelope: %s\n"), str->str);
                        continue;
@@ -1561,11 +1782,12 @@ static GSList *imap_delete_cached_messages(GSList *mlist, FolderItem *item,
        g_return_val_if_fail(item->folder != NULL, mlist);
        g_return_val_if_fail(item->folder->type == F_IMAP, mlist);
 
-       debug_print(_("Deleting cached messages %d - %d ... "),
+       debug_print("Deleting cached messages %u - %u ... ",
                    first_uid, last_uid);
 
        dir = folder_item_get_path(item);
-       remove_numbered_files(dir, first_uid, last_uid);
+       if (is_dir_exist(dir))
+               remove_numbered_files(dir, first_uid, last_uid);
        g_free(dir);
 
        for (cur = mlist; cur != NULL; ) {
@@ -1581,7 +1803,7 @@ static GSList *imap_delete_cached_messages(GSList *mlist, FolderItem *item,
                cur = next;
        }
 
-       debug_print(_("done.\n"));
+       debug_print("done.\n");
 
        return mlist;
 }
@@ -1594,18 +1816,24 @@ static void imap_delete_all_cached_messages(FolderItem *item)
        g_return_if_fail(item->folder != NULL);
        g_return_if_fail(item->folder->type == F_IMAP);
 
-       debug_print(_("Deleting all cached messages... "));
+       debug_print("Deleting all cached messages...\n");
 
        dir = folder_item_get_path(item);
-       remove_all_numbered_files(dir);
+       if (is_dir_exist(dir))
+               remove_all_numbered_files(dir);
        g_free(dir);
 
-       debug_print(_("done.\n"));
+       debug_print("done.\n");
 }
 
-
+#if USE_OPENSSL
+static SockInfo *imap_open_tunnel(const gchar *server,
+                          const gchar *tunnelcmd,
+                          SSLType ssl_type)
+#else
 static SockInfo *imap_open_tunnel(const gchar *server,
                           const gchar *tunnelcmd)
+#endif
 {
        SockInfo *sock;
 
@@ -1613,14 +1841,17 @@ static SockInfo *imap_open_tunnel(const gchar *server,
                log_warning(_("Can't establish IMAP4 session with: %s\n"),
                            server);
                return NULL;
-
+#if USE_OPENSSL
+       return imap_init_sock(sock, ssl_type);
+#else
        return imap_init_sock(sock);
+#endif
 }
 
 
-#if USE_SSL
+#if USE_OPENSSL
 static SockInfo *imap_open(const gchar *server, gushort port,
-                          gboolean use_ssl)
+                          SSLType ssl_type)
 #else
 static SockInfo *imap_open(const gchar *server, gushort port)
 #endif
@@ -1633,25 +1864,45 @@ static SockInfo *imap_open(const gchar *server, gushort port)
                return NULL;
        }
 
-#if USE_SSL
-       if (use_ssl && !ssl_init_socket(sock)) {
+#if USE_OPENSSL
+       if (ssl_type == SSL_TUNNEL && !ssl_init_socket(sock)) {
                log_warning(_("Can't establish IMAP4 session with: %s:%d\n"),
                            server, port);
                sock_close(sock);
                return NULL;
        }
-#endif
-
+       return imap_init_sock(sock, ssl_type);
+#else
        return imap_init_sock(sock);
+#endif
 }
 
-
+#if USE_OPENSSL
+static SockInfo *imap_init_sock(SockInfo *sock, SSLType ssl_type)
+#else
 static SockInfo *imap_init_sock(SockInfo *sock)
+#endif
 {
        imap_cmd_count = 0;
+#if USE_OPENSSL
+       if (ssl_type == SSL_STARTTLS) {
+               gint ok;
+
+               ok = imap_cmd_starttls(sock);
+               if (ok != IMAP_SUCCESS) {
+                       log_warning(_("Can't start TLS session.\n"));
+                       sock_close(sock);
+                       return NULL;
+               }
+               if (!ssl_init_socket_with_method(sock, SSL_METHOD_TLSv1)) {
+                       sock_close(sock);
+                       return NULL;
+               }
+       }
+#endif
 
        if (imap_cmd_noop(sock) != IMAP_SUCCESS) {
-               log_warning(_("Can't establish IMAP4 session\n"));
+               log_warning(_("Can't establish IMAP4 session.\n"));
                sock_close(sock);
                return NULL;
        }
@@ -1659,118 +1910,186 @@ static SockInfo *imap_init_sock(SockInfo *sock)
        return sock;
 }
 
-#define THROW goto catch
-
-static void imap_parse_namespace(IMAPSession *session, IMAPFolder *folder)
+static GList *imap_parse_namespace_str(gchar *str)
 {
-       gchar *ns_str;
+       gchar *p = str;
        gchar *name;
        gchar *separator;
-       gchar *p;
        IMAPNameSpace *namespace;
        GList *ns_list = NULL;
 
-       g_return_if_fail(session != NULL);
-       g_return_if_fail(folder != NULL);
-
-       if (folder->namespace != NULL) return;
-
-       if (imap_cmd_namespace(SESSION(session)->sock, &ns_str)
-           != IMAP_SUCCESS) {
-               log_warning(_("can't get namespace\n"));
-               return;
-       }
-
-       /* get the first element */
-       extract_one_parenthesis_with_skip_quote(ns_str, '"', '(', ')');
-       g_strstrip(ns_str);
-       p = ns_str;
-
        while (*p != '\0') {
                /* parse ("#foo" "/") */
 
                while (*p && *p != '(') p++;
-               if (*p == '\0') THROW;
+               if (*p == '\0') break;
                p++;
 
                while (*p && *p != '"') p++;
-               if (*p == '\0') THROW;
+               if (*p == '\0') break;
                p++;
                name = p;
 
                while (*p && *p != '"') p++;
-               if (*p == '\0') THROW;
+               if (*p == '\0') break;
                *p = '\0';
                p++;
 
                while (*p && isspace(*p)) p++;
-               if (*p == '\0') THROW;
+               if (*p == '\0') break;
                if (strncmp(p, "NIL", 3) == 0)
                        separator = NULL;
                else if (*p == '"') {
                        p++;
                        separator = p;
                        while (*p && *p != '"') p++;
-                       if (*p == '\0') THROW;
+                       if (*p == '\0') break;
                        *p = '\0';
                        p++;
-               } else THROW;
+               } else break;
 
                while (*p && *p != ')') p++;
-               if (*p == '\0') THROW;
+               if (*p == '\0') break;
                p++;
 
                namespace = g_new(IMAPNameSpace, 1);
                namespace->name = g_strdup(name);
                namespace->separator = separator ? separator[0] : '\0';
                ns_list = g_list_append(ns_list, namespace);
-               IMAP_FOLDER(folder)->namespace = ns_list;
        }
 
-catch:
-       g_free(ns_str);
-       return;
+       return ns_list;
 }
 
-#undef THROW
-
-static IMAPNameSpace *imap_find_namespace(IMAPFolder *folder,
-                                         const gchar *path)
+static void imap_parse_namespace(IMAPSession *session, IMAPFolder *folder)
 {
-       IMAPNameSpace *namespace = NULL;
-       GList *ns_list;
-       gchar *name;
-
-       g_return_val_if_fail(folder != NULL, NULL);
-       g_return_val_if_fail(path != NULL, NULL);
+       gchar *ns_str;
+       gchar **str_array;
 
-       ns_list = folder->namespace;
+       g_return_if_fail(session != NULL);
+       g_return_if_fail(folder != NULL);
 
-       for (; ns_list != NULL; ns_list = ns_list->next) {
-               IMAPNameSpace *tmp_ns = ns_list->data;
+       if (folder->ns_personal != NULL ||
+           folder->ns_others   != NULL ||
+           folder->ns_shared   != NULL)
+               return;
 
-               Xstrdup_a(name, tmp_ns->name, return namespace);
-               if (tmp_ns->separator && tmp_ns->separator != '/')
-                       subst_char(name, tmp_ns->separator, '/');
-               if (strncmp(path, name, strlen(name)) == 0)
-                       namespace = tmp_ns;
+       if (!imap_has_capability(session, "NAMESPACE")) {
+               imap_get_namespace_by_list(session, folder);
+               return;
        }
-
+       
+       if (imap_cmd_namespace(SESSION(session)->sock, &ns_str)
+           != IMAP_SUCCESS) {
+               log_warning(_("can't get namespace\n"));
+               return;
+       }
+
+       str_array = strsplit_parenthesis(ns_str, '(', ')', 3);
+       if (str_array == NULL) {
+               g_free(ns_str);
+               imap_get_namespace_by_list(session, folder);
+               return;
+       }
+       if (str_array[0])
+               folder->ns_personal = imap_parse_namespace_str(str_array[0]);
+       if (str_array[0] && str_array[1])
+               folder->ns_others = imap_parse_namespace_str(str_array[1]);
+       if (str_array[0] && str_array[1] && str_array[2])
+               folder->ns_shared = imap_parse_namespace_str(str_array[2]);
+       g_strfreev(str_array);
+       g_free(ns_str);
+}
+
+static void imap_get_namespace_by_list(IMAPSession *session, IMAPFolder *folder)
+{
+       GSList *item_list, *cur;
+       gchar separator = '\0';
+       IMAPNameSpace *namespace;
+
+       g_return_if_fail(session != NULL);
+       g_return_if_fail(folder != NULL);
+
+       if (folder->ns_personal != NULL ||
+           folder->ns_others   != NULL ||
+           folder->ns_shared   != NULL)
+               return;
+
+       imap_cmd_gen_send(SESSION(session)->sock, "LIST \"\" \"\"");
+       item_list = imap_parse_list(NULL, session, "", &separator);
+       for (cur = item_list; cur != NULL; cur = cur->next)
+               folder_item_destroy(FOLDER_ITEM(cur->data));
+       g_slist_free(item_list);
+
+       namespace = g_new(IMAPNameSpace, 1);
+       namespace->name = g_strdup("");
+       namespace->separator = separator;
+       folder->ns_personal = g_list_append(NULL, namespace);
+}
+
+static IMAPNameSpace *imap_find_namespace_from_list(GList *ns_list,
+                                                   const gchar *path)
+{
+       IMAPNameSpace *namespace = NULL;
+       gchar *tmp_path, *name;
+
+       if (!path) path = "";
+
+       Xstrcat_a(tmp_path, path, "/", return NULL);
+
+       for (; ns_list != NULL; ns_list = ns_list->next) {
+               IMAPNameSpace *tmp_ns = ns_list->data;
+
+               Xstrdup_a(name, tmp_ns->name, return namespace);
+               if (tmp_ns->separator && tmp_ns->separator != '/')
+                       subst_char(name, tmp_ns->separator, '/');
+               if (strncmp(tmp_path, name, strlen(name)) == 0)
+                       namespace = tmp_ns;
+       }
+
        return namespace;
 }
 
+static IMAPNameSpace *imap_find_namespace(IMAPFolder *folder,
+                                         const gchar *path)
+{
+       IMAPNameSpace *namespace;
+
+       g_return_val_if_fail(folder != NULL, NULL);
+
+       namespace = imap_find_namespace_from_list(folder->ns_personal, path);
+       if (namespace) return namespace;
+       namespace = imap_find_namespace_from_list(folder->ns_others, path);
+       if (namespace) return namespace;
+       namespace = imap_find_namespace_from_list(folder->ns_shared, path);
+       if (namespace) return namespace;
+
+       return NULL;
+}
+
+static gchar imap_get_path_separator(IMAPFolder *folder, const gchar *path)
+{
+       IMAPNameSpace *namespace;
+       gchar separator = '/';
+
+       namespace = imap_find_namespace(folder, path);
+       if (namespace && namespace->separator)
+               separator = namespace->separator;
+
+       return separator;
+}
+
 static gchar *imap_get_real_path(IMAPFolder *folder, const gchar *path)
 {
        gchar *real_path;
-       IMAPNameSpace *namespace;
+       gchar separator;
 
        g_return_val_if_fail(folder != NULL, NULL);
        g_return_val_if_fail(path != NULL, NULL);
 
        real_path = imap_locale_to_modified_utf7(path);
-       namespace = imap_find_namespace(folder, path);
-       if (namespace && namespace->separator)
-               imap_path_separator_subst(real_path, namespace->separator);
+       separator = imap_get_path_separator(folder, path);
+       imap_path_separator_subst(real_path, separator);
 
        return real_path;
 }
@@ -1837,98 +2156,66 @@ static gchar *imap_parse_atom(SockInfo *sock, gchar *src,
        return cur_pos;
 }
 
-static gchar *imap_parse_one_address(SockInfo *sock, gchar *start,
-                                    gchar *out_from_str,
-                                    gchar *out_fromname_str,
-                                    GString *str)
+static gchar *imap_get_header(SockInfo *sock, gchar *cur_pos, gchar **headers,
+                             GString *str)
 {
-       gchar buf[IMAPBUFSIZE];
-       gchar *userid;
-       gchar *domain;
-       gchar *cur_pos = start;
-
-       cur_pos = imap_parse_atom(sock, cur_pos, buf, sizeof(buf), str);
-       conv_unmime_header(out_fromname_str, IMAPBUFSIZE, buf, NULL);
+       gchar *nextline;
+       gchar buf[32];
+       gint len;
+       gint block_len = 0;
 
-       cur_pos = imap_parse_atom(sock, cur_pos, buf, sizeof(buf), str);
+       *headers = NULL;
 
-       cur_pos = imap_parse_atom(sock, cur_pos, buf, sizeof(buf), str);
-       Xstrdup_a(userid, buf, return cur_pos + 1);
+       g_return_val_if_fail(str != NULL, cur_pos);
 
-       cur_pos = imap_parse_atom(sock, cur_pos, buf, sizeof(buf), str);
-       Xstrdup_a(domain, buf, return cur_pos + 1);
+       while (isspace(*cur_pos)) cur_pos++;
 
-       if (out_fromname_str[0] != '\0') {
-               g_snprintf(out_from_str, IMAPBUFSIZE, "\"%s\" <%s@%s>",
-                          out_fromname_str, userid, domain);
-       } else {
-               g_snprintf(out_from_str, IMAPBUFSIZE, "%s@%s",
-                          userid, domain);
-               strcpy(out_fromname_str, out_from_str);
-       }
+       g_return_val_if_fail(*cur_pos == '{', cur_pos);
 
-       while (*cur_pos == ' ') cur_pos++;
-       g_return_val_if_fail(*cur_pos == ')', NULL);
+       cur_pos = strchr_cpy(cur_pos + 1, '}', buf, sizeof(buf));
+       len = atoi(buf);
 
-       return cur_pos + 1;
-}
+       g_string_truncate(str, 0);
+       cur_pos = str->str;
 
-static gchar *imap_parse_address(SockInfo *sock, gchar *start,
-                                gchar **out_from_str,
-                                gchar **out_fromname_str,
-                                GString *str)
-{
-       gchar buf[IMAPBUFSIZE];
-       gchar name_buf[IMAPBUFSIZE];
-       gchar *cur_pos = start;
-       GString *addr_str;
-
-       if (out_from_str)     *out_from_str     = NULL;
-       if (out_fromname_str) *out_fromname_str = NULL;
-       buf[0] = name_buf[0] = '\0';
+       do {
+               if ((nextline = sock_getline(sock)) == NULL)
+                       return cur_pos;
+               block_len += strlen(nextline);
+               g_string_append(str, nextline);
+               cur_pos = str->str;
+               strretchomp(nextline);
+               /* debug_print("IMAP4< %s\n", nextline); */
+               g_free(nextline);
+       } while (block_len < len);
 
-       if (!strncmp(cur_pos, "NIL", 3)) {
-               if (out_from_str)     *out_from_str     = g_strdup("");
-               if (out_fromname_str) *out_fromname_str = g_strdup("");
-               return cur_pos + 3;
-       }
+       debug_print("IMAP4< [contents of RFC822.HEADER]\n");
 
-       g_return_val_if_fail(*cur_pos == '(', NULL);
-       cur_pos++;
+       *headers = g_strndup(cur_pos, len);
+       cur_pos += len;
 
-       addr_str = g_string_new(NULL);
+       while (isspace(*cur_pos)) cur_pos++;
+       while (*cur_pos == '\0') {
+               if ((nextline = sock_getline(sock)) == NULL)
+                       return cur_pos;
+               g_string_assign(str, nextline);
+               cur_pos = str->str;
+               strretchomp(nextline);
+               debug_print("IMAP4< %s\n", nextline);
+               g_free(nextline);
 
-       for (;;) {
-               gchar ch = *cur_pos++;
-               if (ch == ')') break;
-               if (ch == '(') {
-                       cur_pos = imap_parse_one_address
-                               (sock, cur_pos, buf, name_buf, str);
-                       if (!cur_pos) {
-                               g_string_free(addr_str, TRUE);
-                               return NULL;
-                       }
-                       if (addr_str->str[0] != '\0')
-                               g_string_append(addr_str, ", ");
-                       g_string_append(addr_str, buf);
-               }
+               while (isspace(*cur_pos)) cur_pos++;
        }
 
-       if (out_from_str)     *out_from_str     = g_strdup(addr_str->str);
-       if (out_fromname_str) *out_fromname_str = g_strdup(name_buf);
-
-       g_string_free(addr_str, TRUE);
-
        return cur_pos;
 }
 
 static MsgFlags imap_parse_flags(const gchar *flag_str)  
 {
        const gchar *p = flag_str;
-       MsgFlags flags;
+       MsgFlags flags = {0, 0};
 
        flags.perm_flags = MSG_UNREAD;
-       flags.tmp_flags  = MSG_IMAP;
 
        while ((p = strchr(p, '\\')) != NULL) {
                p++;
@@ -1949,38 +2236,38 @@ static MsgFlags imap_parse_flags(const gchar *flag_str)
        return flags;
 }
 
-static MsgInfo *imap_parse_envelope(SockInfo *sock, GString *line_str)
+static MsgInfo *imap_parse_envelope(SockInfo *sock, FolderItem *item,
+                                   GString *line_str)
 {
-       MsgInfo *msginfo;
        gchar buf[IMAPBUFSIZE];
-       gchar tmp[IMAPBUFSIZE];
+       MsgInfo *msginfo = NULL;
        gchar *cur_pos;
        gint msgnum;
        guint32 uid = 0;
        size_t size = 0;
-       gchar *date = NULL;
-       time_t date_t = 0;
-       gchar *subject = NULL;
-       gchar *tmp_from;
-       gchar *tmp_fromname;
-       gchar *from = NULL;
-       gchar *fromname = NULL;
-       gchar *tmp_to;
-       gchar *to = NULL;
-       gchar *inreplyto = NULL;
-       gchar *msgid = NULL;
-       MsgFlags flags = {0, 0};
+       MsgFlags flags = {0, 0}, imap_flags = {0, 0};
 
        g_return_val_if_fail(line_str != NULL, NULL);
        g_return_val_if_fail(line_str->str[0] == '*' &&
                             line_str->str[1] == ' ', NULL);
 
+       MSG_SET_TMP_FLAGS(flags, MSG_IMAP);
+       if (item->stype == F_QUEUE) {
+               MSG_SET_TMP_FLAGS(flags, MSG_QUEUED);
+       } else if (item->stype == F_DRAFT) {
+               MSG_SET_TMP_FLAGS(flags, MSG_DRAFT);
+       }
+
        cur_pos = line_str->str + 2;
 
-#define PARSE_ONE_ELEMENT(ch) \
-{ \
-       cur_pos = strchr_cpy(cur_pos, ch, buf, sizeof(buf)); \
-       g_return_val_if_fail(cur_pos != NULL, NULL); \
+#define PARSE_ONE_ELEMENT(ch)                                  \
+{                                                              \
+       cur_pos = strchr_cpy(cur_pos, ch, buf, sizeof(buf));    \
+       if (cur_pos == NULL) {                                  \
+               g_warning("cur_pos == NULL\n");                 \
+               procmsg_msginfo_free(msginfo);                  \
+               return NULL;                                    \
+       }                                                       \
 }
 
        PARSE_ONE_ELEMENT(' ');
@@ -2000,114 +2287,37 @@ static MsgInfo *imap_parse_envelope(SockInfo *sock, GString *line_str)
                        uid = strtoul(cur_pos, &cur_pos, 10);
                } else if (!strncmp(cur_pos, "FLAGS ", 6)) {
                        cur_pos += 6;
-                       g_return_val_if_fail(*cur_pos == '(', NULL);
+                       if (*cur_pos != '(') {
+                               g_warning("*cur_pos != '('\n");
+                               procmsg_msginfo_free(msginfo);
+                               return NULL;
+                       }
                        cur_pos++;
                        PARSE_ONE_ELEMENT(')');
-                       flags = imap_parse_flags(buf);
+                       imap_flags = imap_parse_flags(buf);
                } else if (!strncmp(cur_pos, "RFC822.SIZE ", 12)) {
                        cur_pos += 12;
                        size = strtol(cur_pos, &cur_pos, 10);
-               } else if (!strncmp(cur_pos, "ENVELOPE ", 9)) {
-                       cur_pos += 9;
-                       g_return_val_if_fail(*cur_pos == '(', NULL);
-                       cur_pos = imap_parse_atom
-                               (sock, cur_pos + 1, buf, sizeof(buf), line_str);
-                       if (buf[0] != '\0') {
-                               Xstrdup_a(date, buf, return NULL);
-                               date_t = procheader_date_parse(NULL, date, 0);
-                       }
-
-                       cur_pos = imap_parse_atom
-                               (sock, cur_pos, buf, sizeof(buf), line_str);
-                       if (buf[0] != '\0') {
-                               conv_unmime_header(tmp, sizeof(tmp), buf, NULL);
-                               Xstrdup_a(subject, tmp, return NULL);
-                       }
-
-                       g_return_val_if_fail(*cur_pos == ' ', NULL);
-                       cur_pos = imap_parse_address(sock, cur_pos + 1,
-                                                    &tmp_from, &tmp_fromname,
-                                                    line_str);
-                       g_return_val_if_fail(cur_pos != NULL, NULL);
-                       if (tmp_from && *tmp_from != '\0')
-                               Xstrdup_a(from, tmp_from,
-                                         {g_free(tmp_from);
-                                          g_free(tmp_fromname);
-                                          return NULL;});
-                       if (tmp_fromname && *tmp_fromname != '\0')
-                               Xstrdup_a(fromname, tmp_fromname,
-                                         {g_free(tmp_from);
-                                          g_free(tmp_fromname);
-                                          return NULL;});
-                       g_free(tmp_from);
-                       g_free(tmp_fromname);
-
-#define SKIP_ONE_ELEMENT() \
-{ \
-       g_return_val_if_fail(*cur_pos == ' ', NULL); \
-       cur_pos = imap_parse_address(sock, cur_pos + 1, NULL, NULL, \
-                                    line_str); \
-       g_return_val_if_fail(cur_pos != NULL, NULL); \
-}
-
-                       /* skip sender and reply-to */
-                       SKIP_ONE_ELEMENT();
-                       SKIP_ONE_ELEMENT();
-
-                       g_return_val_if_fail(*cur_pos == ' ', NULL);
-                       cur_pos = imap_parse_address(sock, cur_pos + 1,
-                                                    &tmp_to, NULL, line_str);
-                       g_return_val_if_fail(cur_pos != NULL, NULL);
-                       Xstrdup_a(to, tmp_to, {g_free(tmp_to); return NULL;});
-                       g_free(tmp_to);
-
-                       /* skip Cc and Bcc */
-                       SKIP_ONE_ELEMENT();
-                       SKIP_ONE_ELEMENT();
-
-#undef SKIP_ONE_ELEMENT
-
-                       g_return_val_if_fail(*cur_pos == ' ', NULL);
-                       cur_pos = imap_parse_atom
-                               (sock, cur_pos, buf, sizeof(buf), line_str);
-                       g_return_val_if_fail(cur_pos != NULL, NULL);
-                       if (buf[0] != '\0') {
-                               eliminate_parenthesis(buf, '(', ')');
-                               extract_parenthesis(buf, '<', '>');
-                               remove_space(buf);
-                               Xstrdup_a(inreplyto, buf, return NULL);
-                       }
-
-                       g_return_val_if_fail(*cur_pos == ' ', NULL);
-                       cur_pos = imap_parse_atom
-                               (sock, cur_pos, buf, sizeof(buf), line_str);
-                       g_return_val_if_fail(cur_pos != NULL, NULL);
-                       if (buf[0] != '\0') {
-                               extract_parenthesis(buf, '<', '>');
-                               remove_space(buf);
-                               Xstrdup_a(msgid, buf, return NULL);
-                       }
-
-                       g_return_val_if_fail(*cur_pos == ')', NULL);
-                       cur_pos++;
+               } else if (!strncmp(cur_pos, "RFC822.HEADER ", 14)) {
+                       gchar *headers;
+
+                       cur_pos += 14;
+                       cur_pos = imap_get_header(sock, cur_pos, &headers,
+                                                 line_str);
+                       msginfo = procheader_parse_str(headers, flags, FALSE, FALSE);
+                       g_free(headers);
                } else {
                        g_warning("invalid FETCH response: %s\n", cur_pos);
                        break;
                }
        }
 
-       msginfo = g_new0(MsgInfo, 1);
-       msginfo->msgnum = uid;
-       msginfo->size = size;
-       msginfo->date = g_strdup(date);
-       msginfo->date_t = date_t;
-       msginfo->subject = g_strdup(subject);
-       msginfo->from = g_strdup(from);
-       msginfo->fromname = g_strdup(fromname);
-       msginfo->to = g_strdup(to);
-       msginfo->inreplyto = g_strdup(inreplyto);
-       msginfo->msgid = g_strdup(msgid);
-       msginfo->flags = flags;
+       if (msginfo) {
+               msginfo->msgnum = uid;
+               msginfo->size = size;
+               msginfo->flags.tmp_flags |= imap_flags.tmp_flags;
+               msginfo->flags.perm_flags = imap_flags.perm_flags;
+       }
 
        return msginfo;
 }
@@ -2120,7 +2330,6 @@ gint imap_msg_set_perm_flags(MsgInfo *msginfo, MsgPermFlags flags)
        gint ok = IMAP_SUCCESS;
 
        g_return_val_if_fail(msginfo != NULL, -1);
-       g_return_val_if_fail(MSG_IS_IMAP(msginfo->flags), -1);
        g_return_val_if_fail(msginfo->folder != NULL, -1);
        g_return_val_if_fail(msginfo->folder->folder != NULL, -1);
 
@@ -2130,6 +2339,10 @@ gint imap_msg_set_perm_flags(MsgInfo *msginfo, MsgPermFlags flags)
        session = imap_session_get(folder);
        if (!session) return -1;
 
+       if ((ok = imap_select(session, IMAP_FOLDER(folder), msginfo->folder->path,
+           NULL, NULL, NULL, NULL)) != IMAP_SUCCESS)
+               return ok;
+
        if (flags & MSG_MARKED)  iflags |= IMAP_FLAG_FLAGGED;
        if (flags & MSG_REPLIED) iflags |= IMAP_FLAG_ANSWERED;
        if (iflags) {
@@ -2153,7 +2366,6 @@ gint imap_msg_unset_perm_flags(MsgInfo *msginfo, MsgPermFlags flags)
        gint ok = IMAP_SUCCESS;
 
        g_return_val_if_fail(msginfo != NULL, -1);
-       g_return_val_if_fail(MSG_IS_IMAP(msginfo->flags), -1);
        g_return_val_if_fail(msginfo->folder != NULL, -1);
        g_return_val_if_fail(msginfo->folder->folder != NULL, -1);
 
@@ -2373,17 +2585,64 @@ static gint imap_greeting(SockInfo *sock, gboolean *is_preauth)
        imap_cmd_gen_send(sock, "NOOP");
        argbuf = g_ptr_array_new(); /* will hold messages sent back */
        r = imap_cmd_ok(sock, argbuf);
-       *is_preauth = search_array_starts(argbuf, "PREAUTH") != NULL;
+       *is_preauth = search_array_str(argbuf, "PREAUTH") != NULL;
+
+       ptr_array_free_strings(argbuf);
+       g_ptr_array_free(argbuf, TRUE);
        
        return r;
 }
 
+static void imap_get_capability(Session *session)
+{
+       gchar *capstr;
+       GPtrArray *argbuf;
+
+       if (IMAP_SESSION(session)->capability != NULL)
+               return;
+
+       imap_cmd_gen_send(session->sock, "CAPABILITY");
+       
+       argbuf = g_ptr_array_new();
+
+       if (imap_cmd_ok(session->sock, argbuf) != IMAP_SUCCESS ||
+           ((capstr = search_array_str(argbuf, "CAPABILITY ")) == NULL)) {
+               ptr_array_free_strings(argbuf);
+               g_ptr_array_free(argbuf, TRUE);
+               return;
+       }
+       
+       capstr += strlen("CAPABILITY ");
+
+       IMAP_SESSION(session)->capability = g_strsplit(capstr, " ", 0);
+       
+       ptr_array_free_strings(argbuf);
+       g_ptr_array_free(argbuf, TRUE);
+}
+
+static gboolean imap_has_capability(IMAPSession *session, const gchar *cap)
+{
+       gchar **p;
+       
+       for (p = session->capability; *p != NULL; ++p)
+               if (g_strcasecmp(*p, cap) == 0)
+                       return TRUE;
+
+       return FALSE;
+}
+
 static gint imap_cmd_noop(SockInfo *sock)
 {
        imap_cmd_gen_send(sock, "NOOP");
        return imap_cmd_ok(sock, NULL);
 }
 
+static gint imap_cmd_starttls(SockInfo *sock)
+{
+       imap_cmd_gen_send(sock, "STARTTLS");
+       return imap_cmd_ok(sock, NULL);
+}
+
 #define THROW(err) { ok = err; goto catch; }
 
 static gint imap_cmd_namespace(SockInfo *sock, gchar **ns_str)
@@ -2636,29 +2895,75 @@ static gint imap_cmd_append(SockInfo *sock, const gchar *destfolder,
        return imap_cmd_ok(sock, NULL);
 }
 
-static gint imap_cmd_copy(SockInfo *sock, guint32 uid, const gchar *destfolder)
+#if 0
+static void imap_uidplus_copy(IMAPSession *session, MsgInfo *msginfo,
+                               const gchar *destfolder, const gchar *okmsginfo)
+{
+       unsigned int olduid, newuid;
+       IMAPFlags iflags = 0;
+
+       if (okmsginfo == NULL)
+               return;
+
+       if (sscanf(okmsginfo, "%*u OK [COPYUID %*llu %u %u]", &olduid, &newuid) != 2)
+               return;
+
+       if (olduid != msginfo->msgnum)  /* this should NEVER happen */
+               return;
+
+       if (imap_select(session, IMAP_FOLDER(msginfo->folder->folder), destfolder,
+                       NULL, NULL, NULL, NULL) != IMAP_SUCCESS)
+               return;
+
+       if (msginfo->flags.perm_flags & MSG_MARKED)  iflags |= IMAP_FLAG_FLAGGED;
+       if (msginfo->flags.perm_flags & MSG_REPLIED) iflags |= IMAP_FLAG_ANSWERED;
+       if (iflags)
+               imap_set_message_flags(session, newuid, newuid, iflags, TRUE);
+
+       if (msginfo->flags.perm_flags & MSG_UNREAD)
+               imap_set_message_flags(session, newuid, newuid, IMAP_FLAG_SEEN, FALSE);
+
+       imap_select(session, IMAP_FOLDER(msginfo->folder->folder), msginfo->folder->path,
+                   NULL, NULL, NULL, NULL);
+}
+#endif
+
+static gint imap_cmd_copy(IMAPSession *session,
+    gint32 msgnum, const gchar *destfolder, gint32 *new_uid)
 {
        gint ok;
+       gint32 olduid, newuid;
+       gchar *okmsginfo;
        gchar *destfolder_;
+       GPtrArray *reply;
 
        g_return_val_if_fail(destfolder != NULL, IMAP_ERROR);
+       g_return_val_if_fail(session != NULL, IMAP_ERROR);
+       g_return_val_if_fail(new_uid != NULL, IMAP_ERROR);
 
        QUOTE_IF_REQUIRED(destfolder_, destfolder);
-       imap_cmd_gen_send(sock, "UID COPY %d %s", uid, destfolder_);
+       imap_cmd_gen_send(SESSION(session)->sock, "UID COPY %d %s", msgnum, destfolder_);
 
-       ok = imap_cmd_ok(sock, NULL);
-       if (ok != IMAP_SUCCESS) {
-               log_warning(_("can't copy %d to %s\n"), uid, destfolder_);
-               return -1;
-       }
+       reply = g_ptr_array_new();
 
+       ok = imap_cmd_ok(SESSION(session)->sock, reply);
+       if (ok != IMAP_SUCCESS)
+               log_warning(_("can't copy %d to %s\n"), msgnum, destfolder_);
+       else if (imap_has_capability(session, "UIDPLUS") && reply->len > 0)
+               if ((okmsginfo = g_ptr_array_index(reply, reply->len - 1)) != NULL &&
+                   sscanf(okmsginfo, "%*u OK [COPYUID %*llu %u %u]", &olduid, &newuid) == 2 &&
+                   olduid == msgnum)
+                       *new_uid = newuid;
+
+       ptr_array_free_strings(reply);
+       g_ptr_array_free(reply, TRUE);
        return ok;
 }
 
 gint imap_cmd_envelope(SockInfo *sock, guint32 first_uid, guint32 last_uid)
 {
        imap_cmd_gen_send
-               (sock, "UID FETCH %d:%d (UID FLAGS RFC822.SIZE ENVELOPE)",
+               (sock, "UID FETCH %d:%d (UID FLAGS RFC822.SIZE RFC822.HEADER)",
                 first_uid, last_uid);
 
        return IMAP_SUCCESS;
@@ -2800,23 +3105,7 @@ static gchar *get_quoted(const gchar *src, gchar ch, gchar *dest, gint len)
        return (gchar *)(*p == ch ? p + 1 : p);
 }
 
-static gchar *search_array_starts(GPtrArray *array, const gchar *str)
-{
-       gint i;
-       size_t len;
-
-       g_return_val_if_fail(str != NULL, NULL);
-       len = strlen(str);
-       for (i = 0; i < array->len; i++) {
-               gchar *tmp;
-               tmp = g_ptr_array_index(array, i);
-               if (strncmp(tmp, str, len) == 0)
-                       return tmp;
-       }
-       return NULL;
-}
-
-static gchar *search_array_contain_str(GPtrArray *array, gchar *str)
+static gchar *search_array_contain_str(GPtrArray *array, const gchar *str)
 {
        gint i;
 
@@ -2831,7 +3120,7 @@ static gchar *search_array_contain_str(GPtrArray *array, gchar *str)
        return NULL;
 }
 
-static gchar *search_array_str(GPtrArray *array, gchar *str)
+static gchar *search_array_str(GPtrArray *array, const gchar *str)
 {
        gint i;
        gint len;
@@ -2868,7 +3157,7 @@ static void imap_path_separator_subst(gchar *str, gchar separator)
 
 static gchar *imap_modified_utf7_to_locale(const gchar *mutf7_str)
 {
-#if !HAVE_LIBJCONV
+#if !HAVE_ICONV
        return g_strdup(mutf7_str);
 #else
        static iconv_t cd = (iconv_t)-1;
@@ -2886,7 +3175,7 @@ static gchar *imap_modified_utf7_to_locale(const gchar *mutf7_str)
        if (cd == (iconv_t)-1) {
                cd = iconv_open(conv_get_current_charset_str(), "UTF-7");
                if (cd == (iconv_t)-1) {
-                       g_warning(_("iconv cannot convert UTF-7 to %s\n"),
+                       g_warning("iconv cannot convert UTF-7 to %s\n",
                                  conv_get_current_charset_str());
                        iconv_ok = FALSE;
                        return g_strdup(mutf7_str);
@@ -2923,7 +3212,7 @@ static gchar *imap_modified_utf7_to_locale(const gchar *mutf7_str)
        to_p = to_str = g_malloc(to_len + 1);
 
        if (iconv(cd, &norm_utf7_p, &norm_utf7_len, &to_p, &to_len) == -1) {
-               g_warning(_("iconv cannot convert UTF-7 to %s\n"),
+               g_warning("iconv cannot convert UTF-7 to %s\n",
                          conv_get_current_charset_str());
                g_string_free(norm_utf7, TRUE);
                g_free(to_str);
@@ -2936,12 +3225,12 @@ static gchar *imap_modified_utf7_to_locale(const gchar *mutf7_str)
        *to_p = '\0';
 
        return to_str;
-#endif /* !HAVE_LIBJCONV */
+#endif /* !HAVE_ICONV */
 }
 
 static gchar *imap_locale_to_modified_utf7(const gchar *from)
 {
-#if !HAVE_LIBJCONV
+#if !HAVE_ICONV
        return g_strdup(from);
 #else
        static iconv_t cd = (iconv_t)-1;
@@ -2957,7 +3246,7 @@ static gchar *imap_locale_to_modified_utf7(const gchar *from)
        if (cd == (iconv_t)-1) {
                cd = iconv_open("UTF-7", conv_get_current_charset_str());
                if (cd == (iconv_t)-1) {
-                       g_warning(_("iconv cannot convert %s to UTF-7\n"),
+                       g_warning("iconv cannot convert %s to UTF-7\n",
                                  conv_get_current_charset_str());
                        iconv_ok = FALSE;
                        return g_strdup(from);
@@ -2990,7 +3279,7 @@ static gchar *imap_locale_to_modified_utf7(const gchar *from)
                        from_len -= mblen;
                        if (iconv(cd, &from_tmp, &mblen,
                                  &norm_utf7_p, &norm_utf7_len) == -1) {
-                               g_warning(_("iconv cannot convert %s to UTF-7\n"),
+                               g_warning("iconv cannot convert %s to UTF-7\n",
                                          conv_get_current_charset_str());
                                return g_strdup(from);
                        }
@@ -3032,7 +3321,7 @@ static gchar *imap_locale_to_modified_utf7(const gchar *from)
        g_string_free(to_str, FALSE);
 
        return to;
-#endif
+#endif /* !HAVE_ICONV */
 }
 
 static gboolean imap_rename_folder_func(GNode *node, gpointer data)
@@ -3063,3 +3352,172 @@ static gboolean imap_rename_folder_func(GNode *node, gpointer data)
 
        return FALSE;
 }
+
+gint imap_get_num_list(Folder *folder, FolderItem *_item, GSList **msgnum_list)
+{
+       IMAPFolderItem *item = (IMAPFolderItem *)_item;
+       IMAPSession *session;
+       gint ok, i, lastuid_old, nummsgs = 0;
+       GPtrArray *argbuf;
+       gchar *cmdbuf = NULL;
+       gchar *dir;
+
+       g_return_val_if_fail(folder != NULL, -1);
+       g_return_val_if_fail(item != NULL, -1);
+       g_return_val_if_fail(item->item.path != NULL, -1);
+       g_return_val_if_fail(folder->type == F_IMAP, -1);
+       g_return_val_if_fail(folder->account != NULL, -1);
+
+       session = imap_session_get(folder);
+       g_return_val_if_fail(session != NULL, -1);
+
+       ok = imap_select(session, IMAP_FOLDER(folder), item->item.path,
+                        NULL, NULL, NULL, NULL);
+       if (ok != IMAP_SUCCESS)
+               return -1;
+
+       argbuf = g_ptr_array_new();
+       if(item->lastuid) {
+               cmdbuf = g_strdup_printf("UID FETCH %d:* (UID)", (item->lastuid + 1));
+       } else {
+               cmdbuf = g_strdup("FETCH 1:* (UID)");
+       }
+       imap_cmd_gen_send(SESSION(session)->sock, cmdbuf);
+       g_free(cmdbuf);
+       ok = imap_cmd_ok(SESSION(session)->sock, argbuf);
+       if (ok != IMAP_SUCCESS) {
+               ptr_array_free_strings(argbuf);
+               g_ptr_array_free(argbuf, TRUE);
+               return -1;
+       }
+
+       lastuid_old = item->lastuid;
+       *msgnum_list = g_slist_copy(item->uid_list);
+       debug_print("Got %d uids from cache\n", g_slist_length(item->uid_list));
+       for(i = 0; i < argbuf->len; i++) {
+               int ret, msgidx, msgnum;
+       
+               if((ret = sscanf(g_ptr_array_index(argbuf, i), "%d FETCH (UID %d)", &msgidx, &msgnum)) == 2) {
+                       if(msgnum > lastuid_old) {
+                               *msgnum_list = g_slist_prepend(*msgnum_list, GINT_TO_POINTER(msgnum));
+                               item->uid_list = g_slist_prepend(item->uid_list, GINT_TO_POINTER(msgnum));
+                               nummsgs++;
+
+                               if(msgnum > item->lastuid)
+                                       item->lastuid = msgnum;
+                       }
+               }
+       }
+
+       dir = folder_item_get_path((FolderItem *)item);
+       debug_print("removing old messages from %s\n", dir);
+       remove_numbered_files_not_in_list(dir, *msgnum_list);
+       g_free(dir);
+
+       ptr_array_free_strings(argbuf);
+       g_ptr_array_free(argbuf, TRUE);
+
+       return nummsgs;
+}
+
+static MsgInfo *imap_parse_msg(const gchar *file, FolderItem *item)
+{
+       MsgInfo *msginfo;
+       MsgFlags flags;
+
+       flags.perm_flags = MSG_NEW|MSG_UNREAD;
+       flags.tmp_flags = 0;
+
+       g_return_val_if_fail(item != NULL, NULL);
+       g_return_val_if_fail(file != NULL, NULL);
+
+       if (item->stype == F_QUEUE) {
+               MSG_SET_TMP_FLAGS(flags, MSG_QUEUED);
+       } else if (item->stype == F_DRAFT) {
+               MSG_SET_TMP_FLAGS(flags, MSG_DRAFT);
+       }
+
+       msginfo = procheader_parse_file(file, flags, FALSE, FALSE);
+       if (!msginfo) return NULL;
+
+       msginfo->folder = item;
+
+       return msginfo;
+}
+
+
+MsgInfo *imap_get_msginfo(Folder *folder, FolderItem *item, gint uid)
+{
+       IMAPSession *session;
+       MsgInfo *msginfo = NULL;
+       gint ok;
+
+       g_return_val_if_fail(folder != NULL, NULL);
+       g_return_val_if_fail(item != NULL, NULL);
+
+       session = imap_session_get(folder);
+       g_return_val_if_fail(session != NULL, NULL);
+
+       ok = imap_select(session, IMAP_FOLDER(folder), item->path,
+                        NULL, NULL, NULL, NULL);
+       if (ok != IMAP_SUCCESS)
+               return NULL;
+
+       if (!(item->stype == F_QUEUE || item->stype == F_DRAFT)) {
+               GSList *list;
+
+               list = imap_get_uncached_messages(session, item, uid, uid);
+               if (list) {
+                       msginfo = (MsgInfo *)list->data;
+                       list->data = NULL;
+               }
+               procmsg_msg_list_free(list);
+       } else {
+               gchar *file;
+
+               file = imap_fetch_msg(folder, item, uid);
+               if (file != NULL) {
+                       msginfo = imap_parse_msg(file, item);
+                       if (msginfo != NULL)
+                               msginfo->msgnum = uid;
+                       g_free(file);
+               }
+       }
+       
+       return msginfo;
+}
+
+gboolean imap_check_msgnum_validity(Folder *folder, FolderItem *_item)
+{
+       IMAPSession *session;
+       IMAPFolderItem *item = (IMAPFolderItem *)_item;
+       gint ok, exists = 0, recent = 0, unseen = 0;
+       guint32 uid_next, uid_validity = 0;
+       
+       g_return_val_if_fail(folder != NULL, FALSE);
+       g_return_val_if_fail(item != NULL, FALSE);
+       g_return_val_if_fail(item->item.folder != NULL, FALSE);
+       g_return_val_if_fail(item->item.folder->type == F_IMAP, FALSE);
+
+       session = imap_session_get(folder);
+       g_return_val_if_fail(session != NULL, FALSE);
+
+       ok = imap_status(session, IMAP_FOLDER(folder), item->item.path,
+                        &exists, &recent, &uid_next, &uid_validity, &unseen);
+       if (ok != IMAP_SUCCESS)
+               return FALSE;
+
+       if(item->item.mtime == uid_validity)
+               return TRUE;
+
+       debug_print("Freeing imap uid cache");
+       item->lastuid = 0;
+       g_slist_free(item->uid_list);
+       item->uid_list = NULL;
+               
+       item->item.mtime = uid_validity;
+
+       imap_delete_all_cached_messages((FolderItem *)item);
+
+       return FALSE;
+}