Tizen: Integrate telephony plugin

Change-Id: Ia178f5de981501296573bf3f48e329d5a1355af6

1 files changed, 1757 insertions, 0 deletions

diff --git a/plugins/telephony.c b/plugins/telephony.c
new file mode 100644
index 00000000..63e7f6e3
--- /dev/null
+++ b/plugins/telephony.c
@@ -0,0 +1,1757 @@
+/*
+ *
+ *  Connection Manager
+ *
+ *  Copyright (C) 2011-2013  Samsung Electronics Co., Ltd. All rights reserved.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ *
+ *  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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <errno.h>
+#include <stdlib.h>
+
+#include <gdbus.h>
+#include <string.h>
+
+#define CONNMAN_API_SUBJECT_TO_CHANGE
+#include <connman/plugin.h>
+#include <connman/device.h>
+#include <connman/network.h>
+#include <connman/ipconfig.h>
+#include <connman/dbus.h>
+#include <connman/inet.h>
+#include <connman/technology.h>
+#include <connman/log.h>
+
+#define PS_DBUS_SERVICE				"com.tcore.ps"
+
+#define PS_MASTER_INTERFACE		PS_DBUS_SERVICE ".master"
+#define PS_MODEM_INTERFACE		PS_DBUS_SERVICE ".modem"
+#define PS_SERVICE_INTERFACE		PS_DBUS_SERVICE ".service"
+#define PS_CONTEXT_INTERFACE		PS_DBUS_SERVICE ".context"
+
+/* methods */
+#define GET_MODEMS			"GetModems"
+#define GET_SERVICES			"GetServices"
+#define GET_CONTEXTS			"GetContexts"
+#define ACTIVATE_CONTEXT		"Activate"
+#define DEACTIVATE_CONTEXT		"Deactivate"
+#define GET_PROPERTIES			"GetProperties"
+#define SET_PROPERTY			"SetProperties"
+
+/* signals */
+#define MODEM_ADDED			"ModemAdded"
+#define MODEM_REMOVED			"ModemRemoved"
+#define SERVICE_ADDED			"ServiceAdded"
+#define SERVICE_REMOVED			"ServiceRemoved"
+#define CONTEXT_ADDED			"ContextAdded"
+#define CONTEXT_REMOVED			"ContextRemoved"
+#define PROPERTY_CHANGED		"PropertyChanged"
+
+#define TIMEOUT 40000
+
+#define STRING2BOOL(a)	((g_str_equal(a, "TRUE")) ?  (TRUE):(FALSE))
+
+static DBusConnection *connection;
+static GHashTable	*modem_hash;
+static GHashTable	*service_hash;
+static GHashTable	*network_hash;
+
+struct telephony_service {
+	char *path;
+
+	gpointer p_modem;
+	char *act;
+	gboolean roaming; /* global roaming state */
+	gboolean ps_attached; /* packet service is available */
+};
+
+struct telephony_modem {
+	char *path;
+
+	char *operator;
+	gboolean powered;
+	gboolean sim_init;
+	gboolean flight_mode;
+	gboolean data_allowed;
+	gboolean roaming_allowed;
+
+	struct connman_device *device;
+	struct telephony_service *s_service;
+};
+
+struct telephony_network {
+	char *path;
+	struct connman_network *network;
+
+	enum connman_ipconfig_method ipv4_method;
+	struct connman_ipaddress *ipv4_address;
+
+	enum connman_ipconfig_method ipv6_method;
+	struct connman_ipaddress *ipv6_address;
+};
+
+/* function prototype */
+static void telephony_connect(DBusConnection *connection, void *user_data);
+static void telephony_disconnect(DBusConnection *connection, void *user_data);
+static void __remove_modem(gpointer data);
+static void __remove_service(gpointer data);
+static void __remove_network(gpointer data);
+
+static int __modem_probe(struct connman_device *device);
+static void __modem_remove(struct connman_device *device);
+static int __modem_enable(struct connman_device *device);
+static int __modem_disable(struct connman_device *device);
+
+static int __network_probe(struct connman_network *network);
+static void __network_remove(struct connman_network *network);
+static int __network_connect(struct connman_network *network);
+static int __network_disconnect(struct connman_network *network);
+
+
+/* dbus request and reply */
+static int __dbus_request(const char *path, const char *interface,
+			const char *method,
+			DBusPendingCallNotifyFunction notify, void *user_data,
+			DBusFreeFunction free_function, int type, ...);
+
+static int __request_get_modems(void);
+static void __response_get_modems(DBusPendingCall *call, void *user_data);
+static int __request_get_services(const char *path);
+static void __response_get_services(DBusPendingCall *call, void *user_data);
+static int __request_get_contexts(struct telephony_modem *modem);
+static void __response_get_contexts(DBusPendingCall *call, void *user_data);
+static int __request_network_activate(struct connman_network *network);
+static void __response_network_activate(DBusPendingCall *call, void *user_data);
+static int __request_network_deactivate(struct connman_network *network);
+
+/* telephony internal function */
+static void __add_modem(const char *path, DBusMessageIter *prop);
+static void __add_service(struct telephony_modem *modem,
+			const char *service_path, DBusMessageIter *prop);
+static void __add_connman_device(const char *modem_path, const char *operator);
+static void __remove_connman_device(struct telephony_modem *modem);
+static void __remove_connman_networks(struct connman_device *device);
+static void __set_device_powered(struct telephony_modem *modem,
+					gboolean powered);
+static int __check_device_powered(const char *path, gboolean online);
+static gboolean __check_network_available(struct connman_network *network);
+static void __create_service(struct connman_network *network);
+static int __add_context(struct connman_device *device, const char *path,
+							DBusMessageIter *prop);
+static gboolean __set_network_ipconfig(struct telephony_network *network,
+							DBusMessageIter *dict);
+static void __set_network_connected(struct telephony_network *network,
+							gboolean connected);
+static char *__get_ident(const char *path);
+
+/* signal handler */
+static gboolean __changed_modem(DBusConnection *connection,
+				DBusMessage *message, void *user_data);
+static gboolean __added_modem(DBusConnection *connection,
+				DBusMessage *message, void *user_data);
+static gboolean __removed_modem(DBusConnection *connection,
+				DBusMessage *message, void *user_data);
+static gboolean __changed_service(DBusConnection *connection,
+				DBusMessage *message, void *user_data);
+static gboolean __added_service(DBusConnection *connection,
+				DBusMessage *message, void *user_data);
+static gboolean __removed_service(DBusConnection *connection,
+				DBusMessage *message, void *user_data);
+static gboolean __changed_context(DBusConnection *connection,
+				DBusMessage *message, void *user_data);
+static gboolean __added_context(DBusConnection *connection,
+				DBusMessage *message, void *user_data);
+static gboolean __removed_context(DBusConnection *connection,
+				DBusMessage *message, void *user_data);
+
+/* device driver */
+static struct connman_device_driver modem_driver = {
+	.name		= "device",
+	.type		= CONNMAN_DEVICE_TYPE_CELLULAR,
+	.probe		= __modem_probe,
+	.remove		= __modem_remove,
+	.enable		= __modem_enable,
+	.disable	= __modem_disable,
+};
+
+/* network driver */
+static struct connman_network_driver network_driver = {
+	.name		= "network",
+	.type		= CONNMAN_NETWORK_TYPE_CELLULAR,
+	.probe		= __network_probe,
+	.remove		= __network_remove,
+	.connect	= __network_connect,
+	.disconnect	= __network_disconnect,
+};
+
+static int tech_probe(struct connman_technology *technology)
+{
+	return 0;
+}
+
+static void tech_remove(struct connman_technology *technology)
+{
+}
+
+static struct connman_technology_driver tech_driver = {
+	.name		= "cellular",
+	.type		= CONNMAN_SERVICE_TYPE_CELLULAR,
+	.probe		= tech_probe,
+	.remove		= tech_remove,
+};
+
+/* local function */
+static void telephony_connect(DBusConnection *connection, void *user_data)
+{
+	DBG("connection %p", connection);
+	modem_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
+						g_free, __remove_modem);
+	service_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
+						g_free, __remove_service);
+	network_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
+						g_free, __remove_network);
+	__request_get_modems();
+	return;
+}
+
+static void telephony_disconnect(DBusConnection *connection, void *user_data)
+{
+	DBG("connection %p", connection);
+
+	if (modem_hash != NULL) {
+		g_hash_table_destroy(modem_hash);
+		modem_hash = NULL;
+	}
+
+	if (network_hash != NULL) {
+		g_hash_table_destroy(network_hash);
+		network_hash = NULL;
+	}
+
+	return;
+}
+
+static void __remove_modem(gpointer data)
+{
+	struct telephony_modem *modem = data;
+
+	__remove_connman_device(modem);
+
+	g_free(modem->path);
+	g_free(modem->operator);
+	g_free(modem);
+}
+
+static void __remove_service(gpointer data)
+{
+	struct telephony_service *service = data;
+
+	g_free(service->path);
+	g_free(service->act);
+	g_free(service);
+}
+
+static void __remove_network(gpointer data)
+{
+	struct telephony_network *info = data;
+	struct connman_device *device;
+
+	device = connman_network_get_device(info->network);
+	if (device != NULL)
+		connman_device_remove_network(device, info->network);
+
+	connman_network_unref(info->network);
+
+	g_free(info->path);
+	connman_ipaddress_free(info->ipv4_address);
+	connman_ipaddress_free(info->ipv6_address);
+	g_free(info);
+}
+
+static int __modem_probe(struct connman_device *device)
+{
+	DBG("device %p", device);
+	return 0;
+}
+
+static void __modem_remove(struct connman_device *device)
+{
+	DBG("device %p", device);
+}
+
+static int __modem_enable(struct connman_device *device)
+{
+	const char *path = connman_device_get_string(device, "Path");
+	DBG("device %p, path, %s", device, path);
+
+	return __check_device_powered(path, TRUE);
+}
+
+static int __modem_disable(struct connman_device *device)
+{
+	const char *path = connman_device_get_string(device, "Path");
+	DBG("device %p, path, %s", device, path);
+
+	return __check_device_powered(path, FALSE);
+}
+
+static int __network_probe(struct connman_network *network)
+{
+	DBG("network_prove network(%p)", network);
+	return 0;
+}
+
+static int __network_connect(struct connman_network *network)
+{
+	struct connman_device *device;
+	struct telephony_modem *modem;
+
+	DBG("network %p", network);
+
+	device = connman_network_get_device(network);
+	if (device == NULL)
+		return -ENODEV;
+
+	modem = connman_device_get_data(device);
+	if (modem == NULL)
+		return -ENODEV;
+
+	if (modem->powered == FALSE)
+		return -ENOLINK;
+
+	return __request_network_activate(network);
+}
+
+static int __network_disconnect(struct connman_network *network)
+{
+	DBG("network %p", network);
+
+	if (connman_network_get_index(network) < 0)
+		return -ENOTCONN;
+
+	connman_network_set_associating(network, FALSE);
+
+	return __request_network_deactivate(network);
+}
+
+static void __network_remove(struct connman_network *network)
+{
+	char const *path = connman_network_get_string(network, "Path");
+	DBG("network %p path %s", network, path);
+
+	g_hash_table_remove(network_hash, path);
+	return;
+}
+
+static int __dbus_request(const char *path, const char *interface,
+			const char *method,
+			DBusPendingCallNotifyFunction notify, void *user_data,
+			DBusFreeFunction free_function, int type, ...)
+{
+	DBusMessage *message;
+	DBusPendingCall *call;
+	dbus_bool_t ok;
+	va_list va;
+
+	DBG("Telephony request path %s %s.%s", path, interface, method);
+
+	if (path == NULL)
+		return -EINVAL;
+
+	message = dbus_message_new_method_call(PS_DBUS_SERVICE, path,
+						interface, method);
+	if (message == NULL)
+		return -ENOMEM;
+
+	dbus_message_set_auto_start(message, FALSE);
+
+	va_start(va, type);
+	ok = dbus_message_append_args_valist(message, type, va);
+	va_end(va);
+
+	if (!ok)
+		return -ENOMEM;
+
+	if (dbus_connection_send_with_reply(connection, message,
+						&call, TIMEOUT) == FALSE) {
+		connman_error("Failed to call %s.%s", interface, method);
+		dbus_message_unref(message);
+		return -EINVAL;
+	}
+
+	if (call == NULL) {
+		connman_error("D-Bus connection not available");
+		dbus_message_unref(message);
+		return -EINVAL;
+	}
+
+	dbus_pending_call_set_notify(call, notify, user_data, free_function);
+
+	dbus_message_unref(message);
+
+	return -EINPROGRESS;
+}
+
+static int __request_get_modems(void)
+{
+	DBG("request get modem");
+	/* call connect master */
+	return __dbus_request("/", PS_MASTER_INTERFACE, GET_MODEMS,
+			__response_get_modems, NULL, NULL, DBUS_TYPE_INVALID);
+}
+
+static void __response_get_modems(DBusPendingCall *call, void *user_data)
+{
+	DBusMessage *reply;
+	DBusError error;
+	DBusMessageIter args, dict;
+
+	DBG("");
+
+	reply = dbus_pending_call_steal_reply(call);
+
+	dbus_error_init(&error);
+
+	if (dbus_set_error_from_message(&error, reply)) {
+		connman_error("GetModems() %s %s", error.name, error.message);
+		dbus_error_free(&error);
+		goto done;
+	}
+
+	DBG("message signature (%s)", dbus_message_get_signature(reply));
+
+	if (dbus_message_iter_init(reply, &args) == FALSE)
+		goto done;
+
+	dbus_message_iter_recurse(&args, &dict);
+
+	while (dbus_message_iter_get_arg_type(&dict) != DBUS_TYPE_INVALID) {
+		DBusMessageIter entry, property;
+		const char *modem_path;
+
+		dbus_message_iter_recurse(&dict, &entry);
+		dbus_message_iter_get_basic(&entry, &modem_path);
+		DBG("modem path (%s)", modem_path);
+
+		dbus_message_iter_next(&entry);
+		dbus_message_iter_recurse(&entry, &property);
+
+		__add_modem(modem_path, &property);
+
+		dbus_message_iter_next(&dict);
+	}
+
+done:
+	dbus_message_unref(reply);
+	dbus_pending_call_unref(call);
+	return;
+}
+
+static int __request_get_services(const char *path)
+{
+	DBG("request get service");
+	return __dbus_request(path, PS_MODEM_INTERFACE, GET_SERVICES,
+				__response_get_services, g_strdup(path),
+				g_free, DBUS_TYPE_INVALID);
+}
+
+static void __response_get_services(DBusPendingCall *call, void *user_data)
+{
+	DBusMessage *reply;
+	DBusError error;
+	DBusMessageIter args, dict;
+
+	const char *path = user_data;
+	struct telephony_modem *modem;
+
+	modem = g_hash_table_lookup(modem_hash, path);
+	if (modem == NULL)
+		return;
+	if (modem->device == NULL)
+		return;
+
+	DBG("");
+
+	reply = dbus_pending_call_steal_reply(call);
+
+	dbus_error_init(&error);
+
+	if (dbus_set_error_from_message(&error, reply)) {
+		connman_error("GetServices() %s %s", error.name, error.message);
+		dbus_error_free(&error);
+		goto done;
+	}
+
+	DBG("message signature (%s)", dbus_message_get_signature(reply));
+
+	if (dbus_message_iter_init(reply, &args) == FALSE)
+		goto done;
+
+	dbus_message_iter_recurse(&args, &dict);
+
+	while (dbus_message_iter_get_arg_type(&dict) != DBUS_TYPE_INVALID) {
+		DBusMessageIter entry, property;
+		const char *service_path;
+
+		dbus_message_iter_recurse(&dict, &entry);
+		dbus_message_iter_get_basic(&entry, &service_path);
+		DBG("service path (%s)", service_path);
+
+		dbus_message_iter_next(&entry);
+		dbus_message_iter_recurse(&entry, &property);
+
+		__add_service(modem, service_path, &property);
+
+		dbus_message_iter_next(&dict);
+	}
+
+done:
+	dbus_message_unref(reply);
+	dbus_pending_call_unref(call);
+	return;
+}
+
+static int __request_get_contexts(struct telephony_modem *modem)
+{
+	DBG("request get contexts");
+	return __dbus_request(modem->s_service->path,
+				PS_SERVICE_INTERFACE, GET_CONTEXTS,
+				__response_get_contexts, g_strdup(modem->path),
+				g_free, DBUS_TYPE_INVALID);
+}
+
+static void __response_get_contexts(DBusPendingCall *call, void *user_data)
+{
+	DBusError error;
+	DBusMessage *reply;
+	DBusMessageIter args, dict;
+
+	const char *path = user_data;
+	struct telephony_modem *modem;
+
+	DBG("");
+
+	modem = g_hash_table_lookup(modem_hash, path);
+	if (modem == NULL)
+		return;
+	if (modem->s_service == NULL)
+			return;
+	if (modem->device == NULL)
+		return;
+
+	reply = dbus_pending_call_steal_reply(call);
+
+	dbus_error_init(&error);
+
+	if (dbus_set_error_from_message(&error, reply)) {
+		connman_error("GetContexts() %s %s", error.name, error.message);
+		dbus_error_free(&error);
+		goto done;
+	}
+
+	DBG("message signature (%s)", dbus_message_get_signature(reply));
+
+	if (dbus_message_iter_init(reply, &args) == FALSE)
+		goto done;
+
+	dbus_message_iter_recurse(&args, &dict);
+
+	while (dbus_message_iter_get_arg_type(&dict) != DBUS_TYPE_INVALID) {
+		DBusMessageIter entry, property;
+		const char *context_path;
+
+		dbus_message_iter_recurse(&dict, &entry);
+		dbus_message_iter_get_basic(&entry, &context_path);
+		DBG("context path (%s)", context_path);
+
+		dbus_message_iter_next(&entry);
+		dbus_message_iter_recurse(&entry, &property);
+
+		__add_context(modem->device, context_path, &property);
+
+		dbus_message_iter_next(&dict);
+	}
+
+done:
+	dbus_message_unref(reply);
+	dbus_pending_call_unref(call);
+	return;
+}
+
+static int __request_network_activate(struct connman_network *network)
+{
+	DBG("request network activate");
+
+	const char *path = connman_network_get_string(network, "Path");
+	DBG("network %p, path %s", network, path);
+
+	return __dbus_request(path, PS_CONTEXT_INTERFACE, ACTIVATE_CONTEXT,
+			__response_network_activate,
+			g_strdup(path), NULL, DBUS_TYPE_INVALID);
+}
+
+static void __response_network_activate(DBusPendingCall *call, void *user_data)
+{
+	DBG("network activation response");
+
+	DBusError error;
+	DBusMessage *reply;
+
+	struct telephony_network *info;
+	const char *path = user_data;
+
+	info = g_hash_table_lookup(network_hash, path);
+	reply = dbus_pending_call_steal_reply(call);
+
+	if (info == NULL)
+		goto done;
+
+	if (!__check_network_available(info->network)) {
+		g_hash_table_remove(network_hash, path);
+		goto done;
+	}
+
+	dbus_error_init(&error);
+	if (dbus_set_error_from_message(&error, reply)) {
+		connman_error("connection activate() %s %s",
+					error.name, error.message);
+
+		if (connman_network_get_index(info->network) < 0)
+			connman_network_set_error(info->network,
+					CONNMAN_NETWORK_ERROR_ASSOCIATE_FAIL);
+
+		dbus_error_free(&error);
+		goto done;
+	}
+
+done:
+	dbus_message_unref(reply);
+	dbus_pending_call_unref(call);
+	return;
+}
+
+static int __request_network_deactivate(struct connman_network *network)
+{
+	DBG("request network deactivate");
+
+	const char *path = connman_network_get_string(network, "Path");
+	DBG("network %p, path %s", network, path);
+
+	return __dbus_request(path, PS_CONTEXT_INTERFACE, DEACTIVATE_CONTEXT,
+		NULL, NULL, NULL, DBUS_TYPE_INVALID);
+}
+
+static void __add_modem(const char *path, DBusMessageIter *prop)
+{
+	struct telephony_modem *modem;
+
+	modem = g_hash_table_lookup(modem_hash, path);
+	if (modem != NULL)
+		return;
+
+	modem = (struct telephony_modem *)malloc(
+					sizeof(struct telephony_modem));
+	memset(modem, 0, sizeof(struct telephony_modem));
+
+	modem->path = g_strdup(path);
+	modem->device = NULL;
+	modem->s_service = NULL;
+
+	g_hash_table_insert(modem_hash, g_strdup(path), modem);
+
+	while (dbus_message_iter_get_arg_type(prop) != DBUS_TYPE_INVALID) {
+		DBusMessageIter entry;
+		const char *key, *tmp;
+
+		dbus_message_iter_recurse(prop, &entry);
+		dbus_message_iter_get_basic(&entry, &key);
+
+		dbus_message_iter_next(&entry);
+		dbus_message_iter_get_basic(&entry, &tmp);
+
+		DBG("key (%s) value(%s)", key, tmp);
+
+		if (g_str_equal(key, "powered") == TRUE) {
+			modem->powered = STRING2BOOL(tmp);
+		} else if (g_str_equal(key, "operator") == TRUE) {
+			modem->operator = g_strdup(tmp);
+		} else if (g_str_equal(key, "sim_init") == TRUE) {
+			modem->sim_init = STRING2BOOL(tmp);
+		} else if (g_str_equal(key, "flight_mode") == TRUE) {
+			modem->flight_mode = STRING2BOOL(tmp);
+		} else if (g_str_equal(key, "roaming_allowed") == TRUE) {
+			modem->roaming_allowed = STRING2BOOL(tmp);
+		} else if (g_str_equal(key, "data_allowed") == TRUE) {
+			modem->data_allowed = STRING2BOOL(tmp);
+		}
+		dbus_message_iter_next(prop);
+	}
+
+	__add_connman_device(path, modem->operator);
+	__set_device_powered(modem, modem->powered);
+
+	if (modem->powered != TRUE) {
+		DBG("modem is not powered");
+		return;
+	}
+
+	__request_get_services(modem->path);
+
+	return;
+}
+
+static void __add_service(struct telephony_modem *modem,
+				const char *service_path, DBusMessageIter *prop)
+{
+	struct telephony_service *service;
+
+	if (modem->s_service != NULL)
+		return;
+
+	service = (struct telephony_service *)g_try_malloc(
+					sizeof(struct telephony_service));
+	if (service == NULL)
+		return;
+
+	memset(service, 0, sizeof(struct telephony_service));
+
+	service->path = g_strdup(service_path);
+	service->p_modem = modem;
+	g_hash_table_insert(service_hash, g_strdup(service_path), service);
+
+	while (dbus_message_iter_get_arg_type(prop) != DBUS_TYPE_INVALID) {
+		DBusMessageIter entry;
+		const char *key, *tmp;
+
+		dbus_message_iter_recurse(prop, &entry);
+		dbus_message_iter_get_basic(&entry, &key);
+
+		dbus_message_iter_next(&entry);
+		dbus_message_iter_get_basic(&entry, &tmp);
+
+		DBG("key (%s) value(%s)", key, tmp);
+
+		if (g_str_equal(key, "roaming") == TRUE) {
+			service->roaming = STRING2BOOL(tmp);
+		} else if (g_str_equal(key, "act") == TRUE) {
+			service->act = g_strdup(tmp);
+		} else if (g_str_equal(key, "ps_attached") == TRUE) {
+			service->ps_attached = STRING2BOOL(tmp);
+		}
+
+		dbus_message_iter_next(prop);
+	}
+
+	modem->s_service = service;
+	__request_get_contexts(modem);
+
+	return;
+}
+
+static void __add_connman_device(const char *modem_path, const char *operator)
+{
+	struct telephony_modem *modem;
+	struct connman_device *device;
+
+	DBG("path %s operator %s", modem_path, operator);
+
+	if (modem_path == NULL)
+		return;
+
+	if (operator == NULL)
+		return;
+
+	modem = g_hash_table_lookup(modem_hash, modem_path);
+	if (modem == NULL)
+		return;
+
+	if (modem->device) {
+		if (!g_strcmp0(operator,
+				connman_device_get_ident(modem->device)))
+			return;
+
+		__remove_connman_device(modem);
+	}
+
+	if (strlen(operator) == 0)
+		return;
+
+	device = connman_device_create(operator, CONNMAN_DEVICE_TYPE_CELLULAR);
+	if (device == NULL)
+		return;
+
+	connman_device_set_ident(device, operator);
+	connman_device_set_string(device, "Path", modem_path);
+	connman_device_set_data(device, modem);
+
+	if (connman_device_register(device) < 0) {
+		connman_error("Failed to register cellular device");
+		connman_device_unref(device);
+		return;
+	}
+
+	modem->device = device;
+
+	return;
+}
+
+static void __remove_connman_device(struct telephony_modem *modem)
+{
+	DBG("modem %p path %s device %p", modem, modem->path, modem->device);
+
+	if (modem->device == NULL)
+		return;
+
+	__remove_connman_networks(modem->device);
+
+	connman_device_unregister(modem->device);
+	connman_device_unref(modem->device);
+
+	modem->device = NULL;
+
+	return;
+}
+
+static void __remove_connman_networks(struct connman_device *device)
+{
+	GHashTableIter iter;
+	gpointer key, value;
+	GSList *info_list = NULL;
+	GSList *list;
+
+	if (network_hash == NULL)
+		return;
+
+	g_hash_table_iter_init(&iter, network_hash);
+
+	while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
+		struct telephony_network *info = value;
+
+		if (connman_network_get_device(info->network) != device)
+			continue;
+
+		info_list = g_slist_append(info_list, info);
+	}
+
+	for (list = info_list; list != NULL; list = list->next) {
+		struct telephony_network *info = list->data;
+		connman_device_remove_network(device, info->network);
+	}
+
+	g_slist_free(info_list);
+}
+
+static void __set_device_powered(struct telephony_modem *modem,
+					gboolean powered)
+{
+	DBG("set modem(%s) powered(%d)", modem->path, powered);
+
+	if (modem->device)
+		connman_device_set_powered(modem->device, powered);
+
+	return;
+}
+
+static int __check_device_powered(const char *path, gboolean powered)
+{
+	struct telephony_modem *modem = g_hash_table_lookup(modem_hash, path);
+
+	if (modem == NULL)
+		return -ENODEV;
+
+	DBG("check modem (%s) powered (%d)", modem->path, modem->powered);
+
+	if (modem->powered == powered)
+		return -EALREADY;
+
+	return 0;
+}
+
+static gboolean __check_network_available(struct connman_network *network)
+{
+	if (network == NULL || connman_network_get_device(network) == NULL) {
+		DBG("Modem or network was removed");
+		return FALSE;
+	}
+
+	return TRUE;
+}
+
+static int __add_context(struct connman_device *device, const char *path,
+				DBusMessageIter *prop)
+{
+	char *ident;
+	gboolean active = FALSE;
+
+	struct telephony_modem *modem = connman_device_get_data(device);
+	struct connman_network *network;
+	struct telephony_network *info;
+
+	DBG("modem %p device %p path %s", modem, device, path);
+
+	ident = __get_ident(path);
+
+	network = connman_device_get_network(device, ident);
+	if (network != NULL)
+		return -EALREADY;
+
+	info = g_hash_table_lookup(network_hash, path);
+	if (info != NULL) {
+		DBG("path %p already exists with device %p", path,
+			connman_network_get_device(info->network));
+
+		if (connman_network_get_device(info->network))
+			return -EALREADY;
+
+		g_hash_table_remove(network_hash, path);
+	}
+
+	network = connman_network_create(ident, CONNMAN_NETWORK_TYPE_CELLULAR);
+	if (network == NULL)
+		return -ENOMEM;
+
+	info = (struct telephony_network *)g_try_malloc(
+					sizeof(struct telephony_network));
+	if (info == NULL) {
+		connman_network_unref(network);
+		return -ENOMEM;
+	}
+
+	memset(info, 0, sizeof(struct telephony_network));
+
+	info->path = g_strdup(path);
+
+	connman_ipaddress_clear(info->ipv4_address);
+	connman_ipaddress_clear(info->ipv6_address);
+	info->network = network;
+
+	connman_network_set_string(network, "Path", path);
+	connman_network_set_name(network, path);
+
+	__create_service(network);
+
+	g_hash_table_insert(network_hash, g_strdup(path), info);
+
+	connman_network_set_available(network, TRUE);
+	connman_network_set_index(network, -1);
+	connman_network_set_bool(network, "Roaming", modem->s_service->roaming);
+
+	if (connman_device_add_network(device, network) != 0) {
+		g_hash_table_remove(network_hash, path);
+		return -EIO;
+	}
+
+	active = __set_network_ipconfig(info, prop);
+
+	if (active && (connman_network_get_connecting(network) ||
+				connman_network_get_associating(network)))
+		__set_network_connected(info, active);
+
+	return 0;
+}
+
+static void __create_service(struct connman_network *network)
+{
+	const char *path;
+	char *group;
+
+	DBG("");
+
+	path = connman_network_get_string(network, "Path");
+
+	group = __get_ident(path);
+
+	connman_network_set_group(network, group);
+}
+
+static gboolean __set_network_ipconfig(struct telephony_network *network,
+					DBusMessageIter *dict)
+{
+	DBG("set network info");
+
+	gboolean active = FALSE;
+	char *dev_name = NULL, *proxy_addr = NULL;
+	char *ipv4_addr = NULL, *ipv4_gw = NULL, *ipv4_netmask = NULL,
+					*ipv4_dns1 = NULL, *ipv4_dns2 = NULL;
+	char *ipv6_addr = NULL, *ipv6_gw = NULL, *ipv6_netmask = NULL,
+					*ipv6_dns1 = NULL, *ipv6_dns2 = NULL;
+	int index;
+	int dns_flag = 0;
+
+	while (dbus_message_iter_get_arg_type(dict) != DBUS_TYPE_INVALID) {
+		DBusMessageIter entry;
+		const char *key, *tmp;
+
+		dbus_message_iter_recurse(dict, &entry);
+		dbus_message_iter_get_basic(&entry, &key);
+
+		dbus_message_iter_next(&entry);
+
+		DBG("key (%s)", key);
+
+		if (g_str_equal(key, "dev_name") == TRUE) {
+			dbus_message_iter_get_basic(&entry, &dev_name);
+			DBG("dev_name (%s)", dev_name);
+		} else if (g_str_equal(key, "proxy") == TRUE) {
+			dbus_message_iter_get_basic(&entry, &proxy_addr);
+		} else if (g_str_equal(key, "ipv4_address") == TRUE) {
+			dbus_message_iter_get_basic(&entry, &ipv4_addr);
+			DBG("ipv4 address (%s)", ipv4_addr);
+		} else if (g_str_equal(key, "ipv4_gateway") == TRUE) {
+			dbus_message_iter_get_basic(&entry, &ipv4_gw);
+		} else if (g_str_equal(key, "ipv4_netmask") == TRUE) {
+			dbus_message_iter_get_basic(&entry, &ipv4_netmask);
+		} else if (g_str_equal(key, "ipv4_dns1") == TRUE) {
+			dbus_message_iter_get_basic(&entry, &ipv4_dns1);
+		} else if (g_str_equal(key, "ipv4_dns2") == TRUE) {
+			dbus_message_iter_get_basic(&entry, &ipv4_dns2);
+		} else if (g_str_equal(key, "ipv6_address") == TRUE) {
+			dbus_message_iter_get_basic(&entry, &ipv6_addr);
+			DBG("ipv6 address (%s)", ipv6_addr);
+		} else if (g_str_equal(key, "ipv6_gateway") == TRUE) {
+			dbus_message_iter_get_basic(&entry, &ipv6_gw);
+		} else if (g_str_equal(key, "ipv6_netmask") == TRUE) {
+			dbus_message_iter_get_basic(&entry, &ipv6_netmask);
+		} else if (g_str_equal(key, "ipv6_dns1") == TRUE) {
+			dbus_message_iter_get_basic(&entry, &ipv6_dns1);
+		} else if (g_str_equal(key, "ipv6_dns2") == TRUE) {
+			dbus_message_iter_get_basic(&entry, &ipv6_dns2);
+		} else if (g_str_equal(key, "active") == TRUE) {
+			dbus_message_iter_get_basic(&entry, &tmp);
+			DBG("active (%s)", tmp);
+			active = STRING2BOOL(tmp);
+		}
+
+		dbus_message_iter_next(dict);
+	}
+
+	/* interface index set */
+	if (dev_name == NULL)
+		dev_name = "";
+
+	if (!g_str_equal(dev_name, "")) {
+		index = connman_inet_ifindex(dev_name);
+		DBG("interface %s, index %d", dev_name, index);
+		connman_network_set_index(network->network, index);
+	}
+
+	/* proxy set */
+	if (proxy_addr == NULL)
+		proxy_addr = "";
+
+	DBG("proxy (%s) is set", proxy_addr);
+	connman_network_set_proxy(network->network, proxy_addr);
+
+	/* ipv4 set */
+	if (ipv4_addr == NULL)
+		ipv4_addr = "0.0.0.0";
+
+	if (g_str_equal(ipv4_addr, "0.0.0.0")) {
+		network->ipv4_method = CONNMAN_IPCONFIG_METHOD_OFF;
+	} else {
+		network->ipv4_method = CONNMAN_IPCONFIG_METHOD_FIXED;
+		network->ipv4_address =
+			connman_ipaddress_alloc(CONNMAN_IPCONFIG_TYPE_IPV4);
+		if (network->ipv4_address == NULL)
+			return FALSE;
+
+		connman_ipaddress_set_ipv4(network->ipv4_address, ipv4_addr,
+						ipv4_netmask, ipv4_gw);
+
+		if (ipv4_dns1 == NULL)
+			ipv4_dns1 = "0.0.0.0";
+		if (ipv4_dns2 == NULL)
+			ipv4_dns2 = "0.0.0.0";
+
+		if (g_str_equal(ipv4_dns1, "0.0.0.0"))
+			dns_flag += 1;
+
+		if (g_str_equal(ipv4_dns2, "0.0.0.0"))
+			dns_flag += 2;
+
+		gchar *nameservers = NULL;
+
+		switch (dns_flag) {
+		case 0:
+			nameservers = g_strdup_printf("%s %s", ipv4_dns1,
+								ipv4_dns2);
+			break;
+		case 1:
+			nameservers = g_strdup_printf("%s", ipv4_dns2);
+			break;
+		case 2:
+			nameservers = g_strdup_printf("%s", ipv4_dns1);
+		}
+
+		connman_network_set_nameservers(network->network, nameservers);
+		g_free(nameservers);
+	}
+
+	/* ipv6 set */
+	if (ipv6_addr == NULL)
+		ipv6_addr = "::";
+
+	if (g_str_equal(ipv6_addr, "::")) {
+		network->ipv6_method = CONNMAN_IPCONFIG_METHOD_OFF;
+	} else {
+		network->ipv6_method = CONNMAN_IPCONFIG_METHOD_FIXED;
+		unsigned char prefix_length = 64;
+		network->ipv6_address =
+			connman_ipaddress_alloc(CONNMAN_IPCONFIG_TYPE_IPV6);
+		if (network->ipv6_address == NULL)
+			return FALSE;
+
+		connman_ipaddress_set_ipv6(network->ipv6_address, ipv6_addr,
+						prefix_length, ipv6_gw);
+
+		dns_flag = 0;
+
+		if (ipv6_dns1 == NULL)
+			ipv6_dns1 = "::";
+		if (ipv6_dns2 == NULL)
+			ipv6_dns2 = "::";
+
+		if (g_str_equal(ipv6_dns1, "::"))
+			dns_flag += 1;
+
+		if (g_str_equal(ipv6_dns2, "::"))
+			dns_flag += 2;
+
+		gchar *nameservers = NULL;
+
+		switch (dns_flag) {
+		case 0:
+			nameservers = g_strdup_printf("%s %s", ipv6_dns1,
+								ipv6_dns2);
+			break;
+		case 1:
+			nameservers = g_strdup_printf("%s", ipv6_dns2);
+			break;
+		case 2:
+			nameservers = g_strdup_printf("%s", ipv6_dns1);
+		}
+
+		connman_network_set_nameservers(network->network, nameservers);
+		g_free(nameservers);
+	}
+
+	if (active)
+		connman_network_set_associating(network->network, TRUE);
+
+	return active;
+}
+
+static void __set_network_connected(struct telephony_network *network,
+					gboolean connected)
+{
+	gboolean setip = FALSE;
+
+	DBG("network %p connected %d", network, connected);
+
+	switch (network->ipv4_method) {
+	case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
+	case CONNMAN_IPCONFIG_METHOD_OFF:
+	case CONNMAN_IPCONFIG_METHOD_MANUAL:
+	case CONNMAN_IPCONFIG_METHOD_AUTO:
+		setip = TRUE;
+		break;
+
+	case CONNMAN_IPCONFIG_METHOD_FIXED:
+		connman_network_set_ipv4_method(network->network,
+							network->ipv4_method);
+		connman_network_set_ipaddress(network->network,
+							network->ipv4_address);
+		setip = TRUE;
+		break;
+
+	case CONNMAN_IPCONFIG_METHOD_DHCP:
+		connman_network_set_ipv4_method(network->network,
+							network->ipv4_method);
+		setip = TRUE;
+		break;
+	}
+
+	switch (network->ipv6_method) {
+	case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
+	case CONNMAN_IPCONFIG_METHOD_OFF:
+	case CONNMAN_IPCONFIG_METHOD_MANUAL:
+	case CONNMAN_IPCONFIG_METHOD_DHCP:
+	case CONNMAN_IPCONFIG_METHOD_AUTO:
+		DBG("ipv6 not supported");
+		break;
+
+	case CONNMAN_IPCONFIG_METHOD_FIXED:
+		connman_network_set_ipv6_method(network->network,
+							network->ipv6_method);
+		connman_network_set_ipaddress(network->network,
+							network->ipv6_address);
+		setip = TRUE;
+		break;
+	}
+
+	if (setip == TRUE)
+		connman_network_set_connected(network->network, connected);
+
+	return;
+}
+
+static char *__get_ident(const char *path)
+{
+	char *pos;
+
+	if (*path != '/')
+		return NULL;
+
+	pos = strrchr(path, '/');
+	if (pos == NULL)
+		return NULL;
+
+	return pos + 1;
+}
+
+static gboolean __changed_modem(DBusConnection *connection,
+				DBusMessage *message, void *user_data)
+{
+	DBG("modem changed signal");
+
+	DBusMessageIter args, dict;
+	const char *path = dbus_message_get_path(message);
+	struct telephony_modem *modem;
+
+	DBG("modem path %s", path);
+
+	modem = g_hash_table_lookup(modem_hash, path);
+	if (modem == NULL) {
+		DBG("modem object does not exists");
+		return TRUE;
+	}
+
+	DBG("message signature (%s)", dbus_message_get_signature(message));
+
+	if (dbus_message_iter_init(message, &args) == FALSE) {
+		DBG("error to read message");
+		return TRUE;
+	}
+
+	dbus_message_iter_recurse(&args, &dict);
+
+	while (dbus_message_iter_get_arg_type(&dict) != DBUS_TYPE_INVALID) {
+		DBusMessageIter entry;
+		const char *key, *tmp;
+
+		dbus_message_iter_recurse(&dict, &entry);
+		dbus_message_iter_get_basic(&entry, &key);
+
+		dbus_message_iter_next(&entry);
+		dbus_message_iter_get_basic(&entry, &tmp);
+
+		DBG("key(%s), value(%s)", key, tmp);
+
+		if (g_str_equal(key, "powered") == TRUE) {
+			modem->powered = STRING2BOOL(tmp);
+		} else if (g_str_equal(key, "operator") == TRUE) {
+			modem->operator = g_strdup(tmp);
+		} else if (g_str_equal(key, "sim_init") == TRUE) {
+			modem->sim_init = STRING2BOOL(tmp);
+		} else if (g_str_equal(key, "flight_mode") == TRUE) {
+			modem->flight_mode = STRING2BOOL(tmp);
+		} else if (g_str_equal(key, "roaming_allowed") == TRUE) {
+			modem->roaming_allowed = STRING2BOOL(tmp);
+		} else if (g_str_equal(key, "data_allowed") == TRUE) {
+			modem->data_allowed = STRING2BOOL(tmp);
+		}
+
+		dbus_message_iter_next(&dict);
+	}
+
+	if (modem->device == NULL)
+		__add_connman_device(path, modem->operator);
+
+	__set_device_powered(modem, modem->powered);
+
+	if (modem->powered != TRUE) {
+		DBG("modem is not powered");
+		return TRUE;
+	}
+
+	if (!modem->s_service) {
+		__request_get_services(modem->path);
+		return TRUE;
+	}
+
+	if (modem->flight_mode || !modem->data_allowed) {
+		DBG("modem(%s) flight mode(%d) data allowed(%d)",
+			modem->path, modem->flight_mode, modem->data_allowed);
+		return TRUE;
+	}
+
+	return TRUE;
+}
+
+static gboolean __added_modem(DBusConnection *connection,
+				DBusMessage *message, void *user_data)
+{
+	DBG("modem added signal");
+
+	const char *modem_path = NULL;
+	DBusMessageIter args, dict, tmp;
+
+	DBG("message signature (%s)", dbus_message_get_signature(message));
+	if (dbus_message_iter_init(message, &args) == FALSE) {
+		DBG("error to read message");
+		return TRUE;
+	}
+
+	dbus_message_iter_recurse(&args, &dict);
+	memcpy(&tmp, &dict, sizeof(struct DBusMessageIter));
+
+	while (dbus_message_iter_get_arg_type(&tmp) != DBUS_TYPE_INVALID) {
+		DBusMessageIter entry;
+		const char *key, *value;
+
+		dbus_message_iter_recurse(&tmp, &entry);
+		dbus_message_iter_get_basic(&entry, &key);
+
+		dbus_message_iter_next(&entry);
+		dbus_message_iter_get_basic(&entry, &value);
+
+		DBG("key (%s) value(%s)", key, value);
+
+		if (g_str_equal(key, "path") == TRUE)
+			modem_path = g_strdup(value);
+
+		dbus_message_iter_next(&tmp);
+	}
+
+	if (modem_path != NULL)
+		__add_modem(modem_path, &dict);
+
+	return TRUE;
+}
+
+static gboolean __removed_modem(DBusConnection *connection,
+					DBusMessage *message, void *user_data)
+{
+	DBG("modem removed signal");
+
+	DBusMessageIter iter;
+	const char *modem_path;
+
+	if (dbus_message_iter_init(message, &iter) == FALSE) {
+		DBG("error to read message");
+		return TRUE;
+	}
+
+	dbus_message_iter_get_basic(&iter, &modem_path);
+	g_hash_table_remove(modem_hash, modem_path);
+
+	return TRUE;
+}
+
+static gboolean __changed_service(DBusConnection *connection,
+					DBusMessage *message, void *user_data)
+{
+	DBG("service changed signal");
+
+	DBusMessageIter args, dict;
+	const char *service_path = dbus_message_get_path(message);
+	struct telephony_modem *modem;
+	struct telephony_service *s_service;
+	gboolean roaming_option = TRUE;
+
+	DBG("service path %s", service_path);
+
+	s_service = g_hash_table_lookup(service_hash, service_path);
+	if (s_service == NULL) {
+		DBG("service object does not exists");
+		return TRUE;
+	}
+
+	modem = s_service->p_modem;
+	if (modem == NULL) {
+		DBG("modem object does not exists");
+		return TRUE;
+	}
+
+	DBG("message signature (%s)", dbus_message_get_signature(message));
+
+	if (dbus_message_iter_init(message, &args) == FALSE) {
+		DBG("error to read message");
+		return TRUE;
+	}
+
+	dbus_message_iter_recurse(&args, &dict);
+
+	while (dbus_message_iter_get_arg_type(&dict) != DBUS_TYPE_INVALID) {
+		DBusMessageIter entry;
+		const char *key, *tmp;
+
+		dbus_message_iter_recurse(&dict, &entry);
+		dbus_message_iter_get_basic(&entry, &key);
+
+		dbus_message_iter_next(&entry);
+		dbus_message_iter_get_basic(&entry, &tmp);
+
+		DBG("key(%s), value(%s)", key, tmp);
+
+		if (g_str_equal(key, "roaming") == TRUE) {
+			s_service->roaming = STRING2BOOL(tmp);
+		} else if (g_str_equal(key, "act") == TRUE) {
+			s_service->act = g_strdup(tmp);
+		} else if (g_str_equal(key, "ps_attached") == TRUE) {
+			s_service->ps_attached = STRING2BOOL(tmp);
+		}
+
+		dbus_message_iter_next(&dict);
+	}
+
+	roaming_option &= (!s_service->roaming && !modem->roaming_allowed)
+				|| modem->roaming_allowed;
+
+	return TRUE;
+}
+
+
+static gboolean __added_service(DBusConnection *connection,
+				DBusMessage *message, void *user_data)
+{
+	DBG("service added signal");
+
+	const char *path = dbus_message_get_path(message);
+	const char *service_path = NULL;
+	DBusMessageIter args, dict, tmp;
+	struct telephony_modem *modem;
+
+	modem = g_hash_table_lookup(modem_hash, path);
+	if (modem == NULL || modem->device == NULL)
+		return TRUE;
+
+	DBG("message signature (%s)", dbus_message_get_signature(message));
+	if (dbus_message_iter_init(message, &args) == FALSE) {
+		DBG("error to read message");
+		return TRUE;
+	}
+
+	dbus_message_iter_recurse(&args, &dict);
+	memcpy(&tmp, &dict, sizeof(struct DBusMessageIter));
+
+	while (dbus_message_iter_get_arg_type(&tmp) != DBUS_TYPE_INVALID) {
+		DBusMessageIter entry;
+		const char *key, *value;
+
+		dbus_message_iter_recurse(&tmp, &entry);
+		dbus_message_iter_get_basic(&entry, &key);
+
+		dbus_message_iter_next(&entry);
+		dbus_message_iter_get_basic(&entry, &value);
+
+		DBG("key (%s) value(%s)", key, value);
+
+		if (g_str_equal(key, "path") == TRUE) {
+			service_path = g_strdup(value);
+		}
+
+		dbus_message_iter_next(&tmp);
+	}
+
+	if (service_path != NULL)
+		__add_service(modem, service_path, &dict);
+
+	return TRUE;
+}
+
+static gboolean __removed_service(DBusConnection *connection,
+					DBusMessage *message, void *user_data)
+{
+	DBG("service removed signal");
+
+	DBusMessageIter iter;
+	const char *service_path;
+
+	if (dbus_message_iter_init(message, &iter) == FALSE) {
+		DBG("error to read message");
+		return TRUE;
+	}
+
+	dbus_message_iter_get_basic(&iter, &service_path);
+	g_hash_table_remove(service_hash, service_path);
+
+	return TRUE;
+}
+
+static gboolean __changed_context(DBusConnection *connection,
+					DBusMessage *message, void *user_data)
+{
+	DBG("network changed signal");
+
+	gboolean active = FALSE;
+	const char *path = dbus_message_get_path(message);
+	struct telephony_network *info;
+	DBusMessageIter args, dict;
+
+	DBG("path %s", path);
+	info = g_hash_table_lookup(network_hash, path);
+	if (info == NULL)
+		return TRUE;
+
+	if (!__check_network_available(info->network)) {
+		g_hash_table_remove(network_hash, path);
+		return TRUE;
+	}
+
+	if (dbus_message_iter_init(message, &args) == FALSE) {
+		DBG("error to read message");
+		return TRUE;
+	}
+
+	dbus_message_iter_recurse(&args, &dict);
+
+	active = __set_network_ipconfig(info, &dict);
+
+	if (active == FALSE)
+		__set_network_connected(info, active);
+	else if ((connman_network_get_connecting(info->network) ||
+			connman_network_get_associating(info->network)))
+		__set_network_connected(info, active);
+
+	return TRUE;
+}
+
+static gboolean __added_context(DBusConnection *connection,
+					DBusMessage *message, void *user_data)
+{
+	DBG("network added signal");
+
+	DBusMessageIter args, dict, tmp;
+	const char *path = dbus_message_get_path(message);
+	const char *network_path = NULL;
+	struct telephony_service *service = NULL;
+	struct telephony_modem *modem = NULL;
+
+	service = g_hash_table_lookup(service_hash, path);
+	if (service == NULL || service->p_modem == NULL)
+		return TRUE;
+
+	modem = service->p_modem;
+	if (modem == NULL || modem->device == NULL)
+		return TRUE;
+
+	DBG("message signature (%s)", dbus_message_get_signature(message));
+	if (dbus_message_iter_init(message, &args) == FALSE) {
+		DBG("error to read message");
+		return TRUE;
+	}
+
+	dbus_message_iter_recurse(&args, &dict);
+	memcpy(&tmp, &dict, sizeof(struct DBusMessageIter));
+
+	while (dbus_message_iter_get_arg_type(&tmp) != DBUS_TYPE_INVALID) {
+		DBusMessageIter entry;
+		const char *key, *value;
+
+		dbus_message_iter_recurse(&tmp, &entry);
+		dbus_message_iter_get_basic(&entry, &key);
+
+		dbus_message_iter_next(&entry);
+		dbus_message_iter_get_basic(&entry, &value);
+
+		DBG("key (%s) value(%s)", key, value);
+
+		if (g_str_equal(key, "path") == TRUE)
+			network_path = g_strdup(value);
+
+		dbus_message_iter_next(&tmp);
+	}
+
+	if (network_path != NULL)
+		__add_context(modem->device, network_path, &dict);
+
+	return TRUE;
+}
+
+static gboolean __removed_context(DBusConnection *connection,
+					DBusMessage *message, void *user_data)
+{
+	DBG("network removed signal");
+
+	DBusMessageIter iter;
+	const char *path = dbus_message_get_path(message);
+	const char *network_path = NULL;
+	struct telephony_service *service = NULL;
+
+	service = g_hash_table_lookup(service_hash, path);
+	if (service == NULL || service->p_modem == NULL)
+		return TRUE;
+
+	if (dbus_message_iter_init(message, &iter) == FALSE) {
+		DBG("error to read message");
+		return TRUE;
+	}
+
+	dbus_message_iter_get_basic(&iter, &network_path);
+	g_hash_table_remove(network_hash, network_path);
+
+	return TRUE;
+}
+
+/* telephony initialization */
+static guint watch;
+static guint modem_watch;
+static guint modem_added_watch;
+static guint modem_removed_watch;
+static guint service_watch;
+static guint service_added_watch;
+static guint service_removed_watch;
+static guint context_watch;
+static guint context_added_watch;
+static guint context_removed_watch;
+
+static int telephony_init(void)
+{
+	DBG("telephony plugin");
+	int err;
+
+	connection = connman_dbus_get_connection();
+	if (connection == NULL)
+		return -EIO;
+
+	/* telephony watch */
+	watch = g_dbus_add_service_watch(connection, PS_DBUS_SERVICE,
+					telephony_connect, telephony_disconnect,
+					NULL, NULL);
+
+	modem_watch = g_dbus_add_signal_watch(connection, NULL, NULL,
+						PS_MODEM_INTERFACE,
+						PROPERTY_CHANGED,
+						__changed_modem, NULL, NULL);
+
+	modem_added_watch = g_dbus_add_signal_watch(connection, NULL, NULL,
+						PS_MASTER_INTERFACE,
+						MODEM_ADDED, __added_modem,
+						NULL, NULL);
+
+	modem_removed_watch = g_dbus_add_signal_watch(connection, NULL, NULL,
+						PS_MASTER_INTERFACE,
+						MODEM_REMOVED, __removed_modem,
+						NULL, NULL);
+
+	service_watch = g_dbus_add_signal_watch(connection, NULL, NULL,
+						PS_SERVICE_INTERFACE,
+						PROPERTY_CHANGED,
+						__changed_service,
+						NULL, NULL);
+
+	service_added_watch = g_dbus_add_signal_watch(connection, NULL, NULL,
+						PS_MODEM_INTERFACE,
+						SERVICE_ADDED, __added_service,
+						NULL, NULL);
+
+	service_removed_watch = g_dbus_add_signal_watch(connection, NULL, NULL,
+						PS_MODEM_INTERFACE,
+						SERVICE_REMOVED,
+						__removed_service,
+						NULL, NULL);
+
+	context_watch = g_dbus_add_signal_watch(connection, NULL, NULL,
+						PS_CONTEXT_INTERFACE,
+						PROPERTY_CHANGED,
+						__changed_context,
+						NULL, NULL);
+
+	context_added_watch = g_dbus_add_signal_watch(connection, NULL, NULL,
+						PS_SERVICE_INTERFACE,
+						CONTEXT_ADDED, __added_context,
+						NULL, NULL);
+
+	context_removed_watch = g_dbus_add_signal_watch(connection, NULL, NULL,
+						PS_SERVICE_INTERFACE,
+						CONTEXT_REMOVED,
+						__removed_context,
+						NULL, NULL);
+
+	if (watch == 0 || modem_watch == 0 || modem_added_watch == 0
+			|| modem_removed_watch == 0 || service_watch == 0
+			|| service_added_watch == 0 || context_watch == 0
+			|| service_removed_watch == 0
+			|| context_added_watch == 0
+			|| context_removed_watch == 0) {
+		err = -EIO;
+		goto remove;
+	}
+
+	err = connman_network_driver_register(&network_driver);
+	if (err < 0)
+		goto remove;
+
+	err = connman_device_driver_register(&modem_driver);
+	if (err < 0) {
+		connman_network_driver_unregister(&network_driver);
+		goto remove;
+	}
+
+	err = connman_technology_driver_register(&tech_driver);
+	if (err < 0) {
+		connman_device_driver_unregister(&modem_driver);
+		connman_network_driver_unregister(&network_driver);
+		goto remove;
+	}
+
+	return 0;
+
+remove:
+	g_dbus_remove_watch(connection, watch);
+	g_dbus_remove_watch(connection, modem_watch);
+	g_dbus_remove_watch(connection, modem_added_watch);
+	g_dbus_remove_watch(connection, modem_removed_watch);
+	g_dbus_remove_watch(connection, service_watch);
+	g_dbus_remove_watch(connection, service_added_watch);
+	g_dbus_remove_watch(connection, service_removed_watch);
+	g_dbus_remove_watch(connection, context_watch);
+	g_dbus_remove_watch(connection, context_added_watch);
+	g_dbus_remove_watch(connection, context_removed_watch);
+
+	dbus_connection_unref(connection);
+	return err;
+}
+
+static void telephony_exit(void)
+{
+	g_dbus_remove_watch(connection, watch);
+	g_dbus_remove_watch(connection, modem_watch);
+	g_dbus_remove_watch(connection, modem_added_watch);
+	g_dbus_remove_watch(connection, modem_removed_watch);
+	g_dbus_remove_watch(connection, service_watch);
+	g_dbus_remove_watch(connection, service_added_watch);
+	g_dbus_remove_watch(connection, service_removed_watch);
+	g_dbus_remove_watch(connection, context_watch);
+	g_dbus_remove_watch(connection, context_added_watch);
+	g_dbus_remove_watch(connection, context_removed_watch);
+
+	telephony_disconnect(connection, NULL);
+
+	connman_device_driver_unregister(&modem_driver);
+	connman_network_driver_unregister(&network_driver);
+
+	dbus_connection_unref(connection);
+}
+
+CONNMAN_PLUGIN_DEFINE(telephony, "Samsung Telephony Framework plug-in", VERSION,
+		CONNMAN_PLUGIN_PRIORITY_DEFAULT, telephony_init, telephony_exit)