No longer need to split ']' tokens from atom tokens due to a fixup in the

2004-03-25  Jeffrey Stedfast  <fejj@ximian.com>

	* providers/imap4/camel-imap-engine.c
	(camel_imap_engine_parse_resp_code): No longer need to split ']'
	tokens from atom tokens due to a fixup in the ABNF grammar in
	rfc3501.

	* providers/imap4/camel-imap-specials.c: Changed ATOM_SPECIALS to
	include ']' (this is an addition in rfc3501).

	* providers/imap4/camel-imap-store.[c,h]: New Store class for
	IMAP. Implemnted a bunch of but still got a ways to go.

svn path=/trunk/; revision=25192

1 files changed, 827 insertions, 0 deletions

diff --git a/camel/providers/imap4/camel-imap-store.c b/camel/providers/imap4/camel-imap-store.c
new file mode 100644
index 0000000000..10019164ad
--- /dev/null
+++ b/camel/providers/imap4/camel-imap-store.c
@@ -0,0 +1,827 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/*  Camel
+ *  Copyright (C) 1999-2004 Jeffrey Stedfast
+ *
+ *  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
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Street #330, Boston, MA 02111-1307, USA.
+ */
+
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+
+#include <camel/camel-sasl.h>
+#include <camel/camel-tcp-stream-raw.h>
+#include <camel/camel-tcp-stream-ssl.h>
+
+#include "camel-imap-store.h"
+#include "camel-imap-engine.h"
+#include "camel-imap-folder.h"
+#include "camel-imap-stream.h"
+#include "camel-imap-command.h"
+
+
+static void camel_imap_store_class_init (CamelIMAPStoreClass *klass);
+static void camel_imap_store_init (CamelIMAPStore *store, CamelIMAPStoreClass *klass);
+static void camel_imap_store_finalize (CamelObject *object);
+
+/* service methods */
+static void imap_construct (CamelService *service, CamelSession *session,
+			    CamelProvider *provider, CamelURL *url,
+			    CamelException *ex);
+static char *imap_get_name (CamelService *service, gboolean brief);
+static gboolean imap_connect (CamelService *service, CamelException *ex);
+static gboolean imap_disconnect (CamelService *service, gboolean clean, CamelException *ex);
+static GList *imap_query_auth_types (CamelService *service, CamelException *ex);
+
+static guint imap_hash_folder_name (gconstpointer key);
+static gint imap_compare_folder_name (gconstpointer a, gconstpointer b);
+
+/* store methods */
+static CamelFolder *imap_get_folder (CamelStore *store, const char *folder_name, guint32 flags, CamelException *ex);
+static CamelFolderInfo *imap_create_folder (CamelStore *store, const char *parent_name, const char *folder_name, CamelException *ex);
+static void imap_delete_folder (CamelStore *store, const char *folder_name, CamelException *ex);
+static void imap_rename_folder (CamelStore *store, const char *old_name, const char *new_name, CamelException *ex);
+static void imap_sync (CamelStore *store, gboolean expunge, CamelException *ex);
+static CamelFolderInfo *imap_get_folder_info (CamelStore *store, const char *top, guint32 flags, CamelException *ex);
+static void imap_subscribe_folder (CamelStore *store, const char *folder_name, CamelException *ex);
+static void imap_unsubscribe_folder (CamelStore *store, const char *folder_name, CamelException *ex);
+static void imap_noop (CamelStore *store, CamelException *ex);
+
+
+static CamelStoreClass *parent_class = NULL;
+
+
+CamelType
+camel_imap_store_get_type (void)
+{
+	static CamelType type = 0;
+	
+	if (!type) {
+		type = camel_type_register (CAMEL_TYPE_IMAP_STORE,
+					    "CamelIMAPStore",
+					    sizeof (CamelIMAPStore),
+					    sizeof (CamelIMAPStoreClass),
+					    (CamelObjectClassInitFunc) camel_imap_store_class_init,
+					    NULL,
+					    (CamelObjectInitFunc) camel_imap_store_init,
+					    (CamelObjectFinalizeFunc) camel_imap_store_finalize);
+	}
+	
+	return type;
+}
+
+static void
+camel_imap_store_class_init (CamelIMAPStoreClass *klass)
+{
+	CamelServiceClass *service_class = (CamelServiceClass *) klass;
+	CamelStoreClass *store_class = (CamelStoreClass *) klass;
+	
+	parent_class = camel_type_get_global_classfuncs (CAMEL_STORE_TYPE);
+	
+	service_class->construct = imap_construct;
+	service_class->get_name = imap_get_name;
+	service_class->connect = imap_connect;
+	service_class->disconnect = imap_disconnect;
+	service_class->query_auth_types = imap_query_auth_types;
+	
+	store_class->get_folder = imap_get_folder;
+	store_class->create_folder = imap_create_folder;
+	store_class->delete_folder = imap_delete_folder;
+	store_class->rename_folder = imap_rename_folder;
+	store_class->sync = imap_sync;
+	store_class->get_folder_info = imap_get_folder_info;
+	store_class->subscribe_folder = imap_subscribe_folder;
+	store_class->unsubscribe_folder = imap_unsubscribe_folder;
+	store_class->noop = imap_noop;
+}
+
+static void
+camel_imap_store_init (CamelIMAPStore *store, CamelIMAPStoreClass *klass)
+{
+	store->engine = NULL;
+}
+
+static void
+camel_imap_store_finalize (CamelObject *object)
+{
+	CamelIMAPStore *store = (CamelIMAPStore *) object;
+	
+	if (store->engine)
+		camel_object_unref (store->engine);
+}
+
+
+static void
+imap_construct (CamelService *service, CamelSession *session, CamelProvider *provider, CamelURL *url, CamelException *ex)
+{
+	CAMEL_SERVICE_CLASS (parent_class)->construct (service, session, provider, url, ex);
+}
+
+static char *
+imap_get_name (CamelService *service, gboolean brief)
+{
+	if (brief)
+		return g_strdup_printf (_("IMAP server %s"), service->url->host);
+	else
+		return g_strdup_printf (_("IMAP service for %s on %s"),
+					service->url->user, service->url->host);
+}
+
+enum {
+	USE_SSL_NEVER,
+	USE_SSL_ALWAYS,
+	USE_SSL_WHEN_POSSIBLE
+};
+
+#define SSL_PORT_FLAGS (CAMEL_TCP_STREAM_SSL_ENABLE_SSL2 | CAMEL_TCP_STREAM_SSL_ENABLE_SSL3)
+#define STARTTLS_FLAGS (CAMEL_TCP_STREAM_SSL_ENABLE_TLS)
+
+static gboolean
+connect_to_server (CamelService *service, struct hostent *host, int ssl_mode, int try_starttls, CamelException *ex)
+{
+	CamelIMAPStore *store = (CamelIMAPStore *) service;
+	CamelIMAPEngine *engine;
+	CamelStream *tcp_stream;
+	int port, ret;
+	
+	if (store->engine) {
+		camel_object_unref (store->engine);
+		store->engine = NULL;
+	}
+	
+	port = service->url->port ? service->url->port : 143;
+	
+	if (ssl_mode) {
+#ifdef HAVE_SSL
+		if (try_starttls) {
+			tcp_stream = camel_tcp_stream_ssl_new (service->session, service->url->host, STARTTLS_FLAGS);
+		} else {
+			port = service->url->port ? service->url->port : 993;
+			tcp_stream = camel_tcp_stream_ssl_new (service->session, service->url->host, SSL_PORT_FLAGS);
+		}
+#else
+		if (!try_starttls)
+			port = service->url->port ? service->url->port : 993;
+		
+		camel_exception_setv (ex, CAMEL_EXCEPTION_SERVICE_UNAVAILABLE,
+				      _("Could not connect to %s (port %d): %s"),
+				      service->url->host, port,
+				      _("SSL unavailable"));
+		
+		return FALSE;
+#endif /* HAVE_SSL */
+	} else {
+		tcp_stream = camel_tcp_stream_raw_new ();
+	}
+	
+	fprintf (stderr, "connecting to %s:%d\n", service->url->host, port);
+	if ((ret = camel_tcp_stream_connect ((CamelTcpStream *) tcp_stream, host, port)) == -1) {
+		if (errno == EINTR)
+			camel_exception_set (ex, CAMEL_EXCEPTION_USER_CANCEL,
+					     _("Connection cancelled"));
+		else
+			camel_exception_setv (ex, CAMEL_EXCEPTION_SERVICE_UNAVAILABLE,
+					      _("Could not connect to %s (port %d): %s"),
+					      service->url->host, port,
+					      g_strerror (errno));
+		
+		camel_object_unref (tcp_stream);
+		
+		return FALSE;
+	}
+	
+	engine = camel_imap_engine_new (service->session, service->url);
+	if (camel_imap_engine_take_stream (engine, tcp_stream, ex) == -1) {
+		camel_object_unref (engine);
+		
+		return FALSE;
+	}
+	
+	if (camel_imap_engine_capability (engine, ex) == -1) {
+		camel_object_unref (engine);
+		
+		return FALSE;
+	}
+	
+	store->engine = engine;
+	
+#ifdef HAVE_SSL
+	if (ssl_mode == USE_SSL_WHEN_POSSIBLE) {
+		/* try_starttls is always TRUE here */
+		if (engine->capa & CAMEL_IMAP_CAPABILITY_STARTTLS)
+			goto starttls;
+	} else if (ssl_mode == USE_SSL_ALWAYS) {
+		if (try_starttls) {
+			if (engine->capa & CAMEL_IMAP_CAPABILITY_STARTTLS) {
+				goto starttls;
+			} else {
+				/* server doesn't support STARTTLS, abort */
+				camel_exception_setv (ex, CAMEL_EXCEPTION_SERVICE_UNAVAILABLE,
+						      _("Failed to connect to IMAP server %s in secure mode: "
+							"Server does not support STARTTLS"),
+						      service->url->host);
+				goto exception;
+			}
+		}
+	}
+#endif /* HAVE_SSL */
+	
+	return TRUE;
+	
+#ifdef HAVE_SSL
+ starttls:
+	
+	if (1) {
+		CamelIMAPCommand *ic;
+		int id;
+		
+		ic = camel_imap_engine_queue (engine, NULL, "STARTTLS\r\n");
+		while ((id = camel_imap_engine_iterate (engine)) < ic->id && id != -1)
+			;
+		
+		if (id == -1 || ic->result != CAMEL_IMAP_RESULT_OK) {
+			if (ic->result != CAMEL_IMAP_RESULT_OK) {
+				camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
+						      _("Failed to connect to IMAP server %s in secure mode: %s"),
+						      service->url->host, _("Unknown error"));
+			} else {
+				camel_exception_xfer (ex, &ic->ex);
+			}
+			
+			camel_imap_command_unref (ic);
+			
+			goto exception;
+		}
+		
+		camel_imap_command_unref (ic);
+	}
+	
+	return TRUE;
+	
+ exception:
+	
+	camel_object_unref (store->engine);
+	store->engine = NULL;
+	
+	return FALSE;
+#endif /* HAVE_SSL */
+}
+
+static struct {
+	char *value;
+	int mode;
+} ssl_options[] = {
+	{ "",              USE_SSL_ALWAYS        },
+	{ "always",        USE_SSL_ALWAYS        },
+	{ "when-possible", USE_SSL_WHEN_POSSIBLE },
+	{ "never",         USE_SSL_NEVER         },
+	{ NULL,            USE_SSL_NEVER         },
+};
+
+static gboolean
+connect_to_server_wrapper (CamelService *service, CamelException *ex)
+{
+	const char *use_ssl;
+	struct hostent *h;
+	int ssl_mode;
+	int ret, i;
+	
+	if (!(h = camel_service_gethost (service, ex)))
+		return FALSE;
+	
+	if ((use_ssl = camel_url_get_param (service->url, "use_ssl"))) {
+		for (i = 0; ssl_options[i].value; i++)
+			if (!strcmp (ssl_options[i].value, use_ssl))
+				break;
+		ssl_mode = ssl_options[i].mode;
+	} else {
+		ssl_mode = USE_SSL_NEVER;
+	}
+	
+	if (ssl_mode == USE_SSL_ALWAYS) {
+		/* First try the ssl port */
+		if (!(ret = connect_to_server (service, h, ssl_mode, FALSE, err))) {
+			if (camel_exception_get_id (ex) == CAMEL_EXCEPTION_SERVICE_UNAVAILABLE) {
+				/* The ssl port seems to be unavailable, lets try STARTTLS */
+				camel_exception_clear (ex);
+				ret = connect_to_server (service, h, ssl_mode, TRUE, ex);
+			}
+		}
+	} else if (ssl_mode == USE_SSL_WHEN_POSSIBLE) {
+		/* If the server supports STARTTLS, use it */
+		ret = connect_to_server (service, h, ssl_mode, TRUE, ex);
+	} else {
+		/* User doesn't care about SSL */
+		ret = connect_to_server (service, h, USE_SSL_ALWAYS, FALSE, err);
+	}
+	
+	camel_free_host (h);
+	
+	return ret;
+}
+
+static int
+sasl_auth (CamelIMAPEngine *engine, CamelIMAPCommand *ic, const unsigned char *linebuf, size_t linelen, CamelException *ex)
+{
+	/* Perform a single challenge iteration */
+	CamelSasl *sasl = ic->user_data;
+	char *challenge;
+	
+	if (camel_sasl_authenticated (sasl)) {
+		camel_exception_setv (ex, CAMEL_EXCEPTION_SERVICE_CANT_AUTHENTICATE,
+				      _("Cannot authenticate to IMAP server %s using the %s authentication mechanism"),
+				      engine->url->host, engine->url->auth);
+		return -1;
+	}
+	
+	while (isspace (*linebuf))
+		linebuf++;
+	
+	if (*linebuf == '\0')
+		linebuf = NULL;
+	
+	if (!(challenge = camel_sasl_challenge_base64 (sasl, (const char *) linebuf, err)))
+		return -1;
+	
+	fprintf (stderr, "sending : %s\r\n", challenge);
+	
+	if (camel_stream_printf (engine->ostream, "%s\r\n", challenge) == -1) {
+		g_free (challenge);
+		return -1;
+	}
+	
+	g_free (challenge);
+	
+	if (camel_stream_flush (engine->ostream) == -1)
+		return -1;
+	
+	return 0;
+}
+
+static int
+imap_try_authenticate (CamelService *service, gboolean reprompt, const char *errmsg, CamelException *ex)
+{
+	CamelIMAPStore *store = (CamelIMAPStore *) service;
+	CamelSession *session = service->session;
+	CamelSasl *sasl = NULL;
+	CamelIMAPCommand *ic;
+	int id;
+	
+	if (!service->url->passwd) {
+		guint32 flags = CAMEL_SESSION_PASSWORD_SECRET;
+		char *prompt;
+		
+		if (reprompt)
+			flags |= CAMEL_SESSION_PASSWORD_REPROMPT;
+		
+		prompt = g_strdup_printf (_("%sPlease enter the IMAP password for %s on host %s"),
+					  errmsg ? errmsg : "",
+					  service->url->user,
+					  service->url->host);
+		
+		service->url->passwd = camel_session_get_password (session, prompt, flags, service, "password", ex);
+		
+		g_free (prompt);
+		
+		if (!service->url->passwd)
+			return FALSE;
+	}
+	
+	if (service->url->auth) {
+		CamelServiceAuthType *mech;
+		
+		mech = g_hash_table_lookup (store->engine->authtypes, service->url->auth);
+		sasl = camel_sasl_new ("imap", mech->authproto, service);
+		
+		ic = camel_imap_engine_queue (store->engine, NULL, "AUTHENTICATE %s\r\n", service->url->auth);
+		ic->plus = sasl_auth;
+		ic->user_data = sasl;
+	} else {
+		ic = camel_imap_engine_queue (store->engine, NULL, "LOGIN %S %S\r\n",
+					       service->url->user, service->url->passwd);
+	}
+	
+	while ((id = camel_imap_engine_iterate (store->engine)) < ic->id && id != -1)
+		;
+	
+	if (sasl != NULL)
+		camel_object_unref (sasl);
+	
+	if (id == -1 || ic->status == CAMEL_IMAP_COMMAND_ERROR) {
+		/* unrecoverable error */
+		camel_exception_xfer (ex, &ic->ex);
+		camel_imap_command_unref (ic);
+		
+		return FALSE;
+	}
+	
+	if (ic->result != CAMEL_IMAP_RESULT_OK) {
+		camel_imap_command_unref (ic);
+		
+		/* try again */
+		
+		return TRUE;
+	}
+	
+	camel_imap_command_unref (ic);
+	
+	return FALSE;
+}
+
+static gboolean
+imap_connect (CamelService *service, CamelException *ex)
+{
+	CamelIMAPStore *store = (CamelIMAPStore *) service;
+	CamelServiceAuthType *mech;
+	gboolean reprompt = FALSE;
+	char *errmsg = NULL;
+	CamelException lex;
+	
+	CAMEL_SERVICE_LOCK (store, connect_lock);
+	
+	if (!connect_to_server_wrapper (service, ex)) {
+		CAMEL_SERVICE_UNLOCK (store, connect_lock);
+		return FALSE;
+	}
+	
+#define CANT_USE_AUTHMECH (!(mech = g_hash_table_lookup (store->engine->authtypes, service->url->auth)))
+	if (service->url->auth && CANT_USE_AUTHMECH) {
+		/* Oops. We can't AUTH using the requested mechanism */
+		camel_exception_setv (ex, CAMEL_EXCEPTION_SERVICE_CANT_AUTHENTICATE,
+				      _("Cannot authenticate to IMAP server %s using %s"),
+				      service->url->host, service->url->auth);
+		
+		camel_object_unref (store->engine);
+		store->engine = NULL;
+		
+		CAMEL_SERVICE_UNLOCK (store, connect_lock);
+		
+		return FALSE;
+	}
+	
+	camel_exception_init (&lex);
+	while (imap_try_authenticate (service, reprompt, errmsg, &lex)) {
+		g_free (errmsg);
+		errmsg = g_strdup (lex.desc);
+		camel_exception_clear (&lex);
+		reprompt = TRUE;
+	}
+	g_free (errmsg);
+	
+	if (camel_exception_is_set (&lex)) {
+		camel_exception_xfer (ex, &lex);
+		camel_object_unref (store->engine);
+		store->engine = NULL;
+		
+		CAMEL_SERVICE_UNLOCK (store, connect_lock);
+		
+		return FALSE;
+	}
+	
+	if (camel_imap_engine_namespace (store->engine, ex) == -1) {
+		camel_object_unref (store->engine);
+		store->engine = NULL;
+		
+		CAMEL_SERVICE_UNLOCK (store, connect_lock);
+		
+		return FALSE;
+	}
+	
+	CAMEL_SERVICE_UNLOCK (store, connect_lock);
+	
+	return TRUE;
+}
+
+static gboolean
+imap_disconnect (CamelService *service, gboolean clean, CamelException *ex)
+{
+	CamelIMAPStore *store = (CamelIMAPStore *) service;
+	CamelIMAPCommand *ic;
+	int id;
+	
+	if (clean && !store->engine->istream->disconnected) {
+		ic = camel_imap_engine_queue (store->engine, NULL, "LOGOUT\r\n");
+		while ((id = camel_imap_engine_iterate (store->engine)) < ic->id && id != -1)
+			;
+		
+		camel_imap_command_unref (ic);
+	}
+	
+	camel_object_unref (store->engine);
+	
+	return 0;
+}
+
+extern CamelServiceAuthType camel_imap_password_authtype;
+
+static GList *
+imap_query_auth_types (CamelService *service, CamelException *ex)
+{
+	CamelIMAPStore *store = (CamelIMAPStore *) service;
+	CamelServiceAuthType *authtype;
+	GList *sasl_types, *t, *next;
+	gboolean connected;
+	
+	CAMEL_SERVICE_LOCK (store, connect_lock);
+	connected = connect_to_server_wrapper (service, ex);
+	CAMEL_SERVICE_UNLOCK (store, connect_lock);
+	if (!connected)
+		return NULL;
+	
+	sasl_types = camel_sasl_authtype_list (FALSE);
+	for (t = sasl_types; t; t = next) {
+		authtype = t->data;
+		next = t->next;
+		
+		if (!g_hash_table_lookup (store->engine->authtypes, authtype->authproto)) {
+			sasl_types = g_list_remove_link (sasl_types, t);
+			g_list_free_1 (t);
+		}
+	}
+	
+	return g_list_prepend (sasl_types, &camel_imap_password_authtype);
+}
+
+
+static char *
+imap_folder_utf7_name (CamelStore *store, const char *folder_name)
+{
+	char *real_name, *p;
+	
+	if (store->dir_sep != '/') {
+		p = real_name = g_alloca (strlen (folder_name) + 1);
+		strcpy (real_name, folder_name);
+		while (*p != '\0') {
+			if (*p == '/')
+				*p = store->dir_sep;
+			p++;
+		}
+		
+		folder_name = real_name;
+	}
+	
+	return camel_utf8_utf7 (folder_name);
+}
+
+static CamelFolder *
+imap_get_folder (CamelStore *store, const char *folder_name, guint32 flags, CamelException *ex)
+{
+	CamelIMAPStore *imap_store = (CamelIMAPStore *) store;
+	
+	/* FIXME: implement me */
+	
+	return NULL;
+}
+
+static CamelFolderInfo *
+imap_create_folder (CamelStore *store, const char *parent_name, const char *folder_name, CamelException *ex)
+{
+	/* FIXME: also need to deal with parent folders that can't
+	 * contain subfolders - delete them and re-create with the
+	 * proper hint */
+	CamelIMAPEngine *engine = ((CamelIMAPStore *) folder->store)->engine;
+	CamelFolderInfo *fi = NULL
+	CamelIMAPCommand *ic;
+	char *utf7_name;
+	const char *c;
+	char *name;
+	int id;
+	
+	c = folder_name;
+	while (*c != '\0') {
+		if (*c == store->dir_sep || strchr ("#%*", *c)) {
+			camel_exception_setv (ex, CAMEL_EXCEPTION_FOLDER_INVALID_PATH,
+					      _("The folder name \"%s\" is invalid because "
+						"it containes the character \"%c\""),
+					      folder_name, *c);
+			return NULL;
+		}
+		
+		c++;
+	}
+	
+	if (parent_name != NULL && *parent_name)
+		name = g_strdup_printf ("%s/%s", parent_name, folder_name);
+	else
+		name = g_strdup (folder_name);
+	
+	utf7_name = imap_folder_utf7_name (store, name);
+	g_free (name);
+	
+	ic = camel_imap_engine_queue (engine, NULL, "CREATE %S\r\n", utf7_name);
+	g_free (utf7_name);
+	
+	while ((id = camel_imap_engine_iterate (engine)) < ic->id && id != -1)
+		;
+	
+	if (id == -1 || ic->status != CAMEL_IMAP_COMMAND_COMPLETE) {
+		camel_exception_xfer (ex, &ic->ex);
+		camel_imap_command_unref (ic);
+		return NULL;
+	}
+	
+	switch (ic->result) {
+	case CAMEL_IMAP_RESULT_OK:
+		/* FIXME: allocate fi */
+		break;
+	case CAMEL_IMAP_RESULT_NO:
+		/* FIXME: would be good to save the NO reason into the err message */
+		camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
+				      _("Cannot create folder `%s': Invalid mailbox name"),
+				      folder_name);
+		break;
+	case CAMEL_IMAP_RESULT_BAD:
+		camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
+				      _("Cannot create folder `%s': Bad command"),
+				      folder_name);
+		break;
+	default:
+		g_assert_not_reached ();
+	}
+	
+	camel_imap_command_unref (ic);
+	
+	return fi;
+}
+
+static void
+imap_delete_folder (CamelStore *store, const char *folder_name, CamelException *ex)
+{
+	CamelIMAPEngine *engine = ((CamelIMAPStore *) folder->store)->engine;
+	CamelIMAPCommand *ic;
+	char *utf7_name;
+	int id;
+	
+	if (!g_ascii_strcasecmp (folder_name, "INBOX")) {
+		camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
+				      _("Cannot delete folder `%s': Special folder"),
+				      folder_name);
+		
+		return;
+	}
+	
+	utf7_name = imap_folder_utf7_name (store, folder_name);
+	ic = camel_imap_engine_queue (engine, NULL, "DELETE %S\r\n", utf7_name);
+	g_free (utf7_name);
+	
+	while ((id = camel_imap_engine_iterate (engine)) < ic->id && id != -1)
+		;
+	
+	if (id == -1 || ic->status != CAMEL_IMAP_COMMAND_COMPLETE) {
+		camel_exception_xfer (ex, &ic->ex);
+		camel_imap_command_unref (ic);
+		return;
+	}
+	
+	switch (ic->result) {
+	case CAMEL_IMAP_RESULT_OK:
+		/* deleted */
+		/*fi = imap_build_folder_info (store, folder_name);
+		camel_object_trigger_event (store, "folder_deleted", fi);
+		camel_folder_info_free (fi);*/
+		break;
+	case CAMEL_IMAP_RESULT_NO:
+		/* FIXME: would be good to save the NO reason into the err message */
+		camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
+				      _("Cannot delete folder `%s': Invalid mailbox name"),
+				      folder_name);
+		break;
+	case CAMEL_IMAP_RESULT_BAD:
+		camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
+				      _("Cannot delete folder `%s': Bad command"),
+				      folder_name);
+		break;
+	}
+	
+	camel_imap_command_unref (ic);
+}
+
+static void
+imap_rename_folder (CamelStore *store, const char *old_name, const char *new_name, CamelException *ex)
+{
+
+}
+
+static void
+imap_sync (CamelStore *store, gboolean expunge, CamelException *ex)
+{
+
+}
+
+static CamelFolderInfo *
+imap_get_folder_info (CamelStore *store, const char *top, guint32 flags, CamelException *ex)
+{
+
+}
+
+static void
+imap_subscribe_folder (CamelStore *store, const char *folder_name, CamelException *ex)
+{
+	CamelIMAPEngine *engine = ((CamelIMAPStore *) store)->engine;
+	CamelIMAPCommand *ic;
+	char *utf7_name;
+	int id;
+	
+	utf7_name = imap_fodler_utf7_name (store, folder_name);
+	ic = camel_imap_engine_queue (engine, NULL, "SUBSCRIBE %S\r\n", utf7_name);
+	g_free (utf7_name);
+	
+	while ((id = camel_imap_engine_iterate (engine)) < ic->id && id != -1)
+		;
+	
+	if (id == -1 || ic->status != CAMEL_IMAP_COMMAND_COMPLETE) {
+		camel_exception_xfer (ex, &ic->ex);
+		camel_imap_command_unref (ic);
+		return;
+	}
+	
+	switch (ic->result) {
+	case CAMEL_IMAP_RESULT_OK:
+		/* subscribed */
+		/*fi = imap_build_folder_info (store, folder_name);
+		  fi->flags |= CAMEL_FOLDER_NOCHILDREN;
+		  camel_object_trigger_event (store, "folder_subscribed", fi);
+		  camel_folder_info_free (fi);*/
+		break;
+	case CAMEL_IMAP_RESULT_NO:
+		/* FIXME: would be good to save the NO reason into the err message */
+		camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
+				      _("Cannot subscribe to folder `%s': Invalid mailbox name"),
+				      folder_name);
+		break;
+	case CAMEL_IMAP_RESULT_BAD:
+		camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
+				      _("Cannot subscribe to folder `%s': Bad command"),
+				      folder_name);
+		break;
+	}
+	
+	camel_imap_command_unref (ic);
+}
+
+static void
+imap_unsubscribe_folder (CamelStore *store, const char *folder_name, CamelException *ex)
+{
+	CamelIMAPEngine *engine = ((CamelIMAPStore *) store)->engine;
+	CamelIMAPCommand *ic;
+	char *utf7_name;
+	int id;
+	
+	utf7_name = imap_fodler_utf7_name (store, folder_name);
+	ic = camel_imap_engine_queue (engine, NULL, "UNSUBSCRIBE %S\r\n", utf7_name);
+	g_free (utf7_name);
+	
+	while ((id = camel_imap_engine_iterate (engine)) < ic->id && id != -1)
+		;
+	
+	if (id == -1 || ic->status != CAMEL_IMAP_COMMAND_COMPLETE) {
+		camel_exception_xfer (ex, &ic->ex);
+		camel_imap_command_unref (ic);
+		return;
+	}
+	
+	switch (ic->result) {
+	case CAMEL_IMAP_RESULT_OK:
+		/* unsubscribed */
+		/*fi = imap_build_folder_info (store, folder_name);
+		  camel_object_trigger_event (store, "folder_unsubscribed", fi);
+		  camel_folder_info_free (fi);*/
+		break;
+	case CAMEL_IMAP_RESULT_NO:
+		/* FIXME: would be good to save the NO reason into the err message */
+		camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
+				      _("Cannot unsubscribe from folder `%s': Invalid mailbox name"),
+				      folder_name);
+		break;
+	case CAMEL_IMAP_RESULT_BAD:
+		camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
+				      _("Cannot unsubscribe from folder `%s': Bad command"),
+				      folder_name);
+		break;
+	}
+	
+	camel_imap_command_unref (ic);
+}
+
+static void
+imap_noop (CamelStore *store, CamelException *ex)
+{
+
+}