connman/client/dbus_helpers.c - nest-learning-thermostat/5.5/connman - Git at Google

 /*
  *
  *  Connection Manager
  *
  *  Copyright (C) 2013  Intel Corporation. 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 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  *
  */

 #include <stdio.h>
 #include <errno.h>
 #include <glib.h>

 #include "input.h"
 #include "dbus_helpers.h"

 #define TIMEOUT         120000

 void __connmanctl_dbus_print(DBusMessageIter *iter, const char *pre,
 		const char *dict, const char *sep)
 {
 	int arg_type;
 	dbus_bool_t b;
 	unsigned char c;
 	dbus_uint16_t u16;
 	dbus_uint32_t u;
 	dbus_int32_t i;
 	double d;

 	char *str;
 	DBusMessageIter entry;

 	if (!pre)
 		pre = "";

 	while ((arg_type = dbus_message_iter_get_arg_type(iter))
 			!= DBUS_TYPE_INVALID) {

 		fprintf(stdout, "%s", pre);

 		switch (arg_type) {
 		case DBUS_TYPE_STRUCT:
 			fprintf(stdout, "{ ");
 			dbus_message_iter_recurse(iter, &entry);
 			__connmanctl_dbus_print(&entry, "", "=", " ");
 			fprintf(stdout, " }");
 			break;

 		case DBUS_TYPE_ARRAY:
 			fprintf(stdout, "[ ");

 			dbus_message_iter_recurse(iter, &entry);
 			__connmanctl_dbus_print(&entry, "", "=", ", ");

 			fprintf(stdout, " ]");
 			break;

 		case DBUS_TYPE_DICT_ENTRY:

 			dbus_message_iter_recurse(iter, &entry);
 			__connmanctl_dbus_print(&entry, "", dict, dict);
 			break;

 		case DBUS_TYPE_STRING:
 		case DBUS_TYPE_OBJECT_PATH:
 			dbus_message_iter_get_basic(iter, &str);
 			fprintf(stdout, "%s", str);
 			break;

 		case DBUS_TYPE_VARIANT:
 			dbus_message_iter_recurse(iter, &entry);
 			__connmanctl_dbus_print(&entry, pre, dict, sep);
 			break;

 		case DBUS_TYPE_BOOLEAN:
 			dbus_message_iter_get_basic(iter, &b);
 			if (!b)
 				fprintf(stdout, "False");
 			else
 				fprintf(stdout, "True");
 			break;

 		case DBUS_TYPE_BYTE:
 			dbus_message_iter_get_basic(iter, &c);
 			fprintf(stdout, "%d", c);
 			break;

 		case DBUS_TYPE_UINT16:
 			dbus_message_iter_get_basic(iter, &u16);
 			fprintf(stdout, "%u", u16);
 			break;

 		case DBUS_TYPE_UINT32:
 			dbus_message_iter_get_basic(iter, &u);
 			fprintf(stdout, "%d", u);
 			break;

 		case DBUS_TYPE_INT32:
 			dbus_message_iter_get_basic(iter, &i);
 			fprintf(stdout, "%d", i);
 			break;

 		case DBUS_TYPE_DOUBLE:
 			dbus_message_iter_get_basic(iter, &d);
 			fprintf(stdout, "%f", d);
 			break;

 		default:
 			fprintf(stdout, "<type %c>", arg_type);
 			break;
 		}

 		if (dbus_message_iter_has_next(iter))
 			fprintf(stdout, "%s", sep);

 		dbus_message_iter_next(iter);
 	}
 }

 struct dbus_callback {
 	connmanctl_dbus_method_return_func_t cb;
 	void *user_data;
 };

 static void dbus_method_reply(DBusPendingCall *call, void *user_data)
 {
 	struct dbus_callback *callback = user_data;
 	int res = 0;
 	DBusMessage *reply;
 	DBusMessageIter iter;

 	__connmanctl_save_rl();

 	reply = dbus_pending_call_steal_reply(call);
 	if (dbus_message_get_type(reply) == DBUS_MESSAGE_TYPE_ERROR) {
 		DBusError err;

 		dbus_error_init(&err);
 		dbus_set_error_from_message(&err, reply);

 		callback->cb(NULL, err.message, callback->user_data);

 		dbus_error_free(&err);
 		goto end;
 	}

 	dbus_message_iter_init(reply, &iter);
 	res = callback->cb(&iter, NULL, callback->user_data);

 end:
 	__connmanctl_redraw_rl();
 	if (__connmanctl_is_interactive() == false && res != -EINPROGRESS)
 		__connmanctl_quit();

 	g_free(callback);
 	dbus_message_unref(reply);
 }

 static int send_method_call(DBusConnection *connection,
 		DBusMessage *message, connmanctl_dbus_method_return_func_t cb,
 		void *user_data)
 {
 	int res = -ENXIO;
 	DBusPendingCall *call;
 	struct dbus_callback *callback;

 	if (!dbus_connection_send_with_reply(connection, message, &call, TIMEOUT))
 		goto end;

 	if (!call)
 		goto end;

 	if (cb) {
 		callback = g_new0(struct dbus_callback, 1);
 		callback->cb = cb;
 		callback->user_data = user_data;
 		dbus_pending_call_set_notify(call, dbus_method_reply,
 				callback, NULL);
 		res = -EINPROGRESS;
 	}

 end:
         dbus_message_unref(message);
 	return res;
 }

 static int append_variant(DBusMessageIter *iter, const char *property,
 		int type, void *value)
 {
 	DBusMessageIter variant;
 	char *type_str;

 	switch(type) {
 	case DBUS_TYPE_BOOLEAN:
                 type_str = DBUS_TYPE_BOOLEAN_AS_STRING;
                 break;
         case DBUS_TYPE_BYTE:
                 type_str = DBUS_TYPE_BYTE_AS_STRING;
                 break;
         case DBUS_TYPE_STRING:
                 type_str = DBUS_TYPE_STRING_AS_STRING;
                 break;
 	case DBUS_TYPE_INT32:
 		type_str = DBUS_TYPE_INT32_AS_STRING;
 		break;
 	default:
 		return -EOPNOTSUPP;
 	}

 	dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING, &property);
 	dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type_str,
 			&variant);
 	dbus_message_iter_append_basic(&variant, type, value);
 	dbus_message_iter_close_container(iter, &variant);

 	return 0;
 }

 int __connmanctl_dbus_method_call(DBusConnection *connection,
 		const char *service, const char *path, const char *interface,
 		const char *method, connmanctl_dbus_method_return_func_t cb,
 		void *user_data, connmanctl_dbus_append_func_t append_func,
 		void *append_data)
 {
 	DBusMessage *message;
 	DBusMessageIter iter;

 	message = dbus_message_new_method_call(service, path, interface,
 			method);

 	if (!message)
 		return -ENOMEM;

 	if (append_func) {
 		dbus_message_iter_init_append(message, &iter);
 		append_func(&iter, append_data);
 	}

 	return send_method_call(connection, message, cb, user_data);
 }

 int __connmanctl_dbus_set_property(DBusConnection *connection,
 		const char *path, const char *interface,
 		connmanctl_dbus_method_return_func_t cb, void * user_data,
 		const char *property, int type, void *value)
 {
 	DBusMessage *message;
 	DBusMessageIter iter;

 	message = dbus_message_new_method_call("net.connman", path,
 			interface, "SetProperty");

 	if (!message)
 		return -ENOMEM;

 	dbus_message_iter_init_append(message, &iter);

 	if (append_variant(&iter, property, type, value) < 0) {
 		dbus_message_unref(message);
 		return -EINVAL;
 	}

 	return send_method_call(connection, message, cb, user_data);
 }

 void __connmanctl_dbus_append_dict(DBusMessageIter *iter,
 		connmanctl_dbus_append_func_t append_fn, void *append_data)
 {
 	DBusMessageIter dict;

 	dbus_message_iter_open_container(iter, DBUS_TYPE_ARRAY,
                         DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
                         DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_VARIANT_AS_STRING
                         DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &dict);

 	if (append_fn)
 		append_fn(&dict, append_data);

 	dbus_message_iter_close_container(iter, &dict);
 }

 void __connmanctl_dbus_append_dict_entry(DBusMessageIter *iter,
 		const char *property, int type, void *value)
 {
 	DBusMessageIter dict_entry;

 	dbus_message_iter_open_container(iter, DBUS_TYPE_DICT_ENTRY, NULL,
 			&dict_entry);

 	append_variant(&dict_entry, property, type, value);

 	dbus_message_iter_close_container(iter, &dict_entry);
 }

 int __connmanctl_dbus_set_property_dict(DBusConnection *connection,
 		const char *path, const char *interface,
 		connmanctl_dbus_method_return_func_t cb, void *user_data,
 		const char *property, int type,
 		connmanctl_dbus_append_func_t append_fn,
 		void *append_user_data)
 {
 	DBusMessage *message;
 	DBusMessageIter iter, variant, dict;

 	message = dbus_message_new_method_call("net.connman", path,
 			interface, "SetProperty");

 	if (!message)
 		return -ENOMEM;

 	dbus_message_iter_init_append(message, &iter);
 	dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &property);
 	dbus_message_iter_open_container(&iter, DBUS_TYPE_VARIANT,
 			DBUS_TYPE_ARRAY_AS_STRING
 				DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
 					DBUS_TYPE_STRING_AS_STRING
 					DBUS_TYPE_VARIANT_AS_STRING
 				DBUS_DICT_ENTRY_END_CHAR_AS_STRING,
 			&variant);

 	dbus_message_iter_open_container(&variant, DBUS_TYPE_ARRAY,
 			DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
 				DBUS_TYPE_STRING_AS_STRING
 				DBUS_TYPE_VARIANT_AS_STRING
 			DBUS_DICT_ENTRY_END_CHAR_AS_STRING,
 			&dict);

 	append_fn(&dict, append_user_data);

 	dbus_message_iter_close_container(&variant, &dict);
 	dbus_message_iter_close_container(&iter, &variant);

 	return send_method_call(connection, message, cb, user_data);
 }

 static void append_variant_array(DBusMessageIter *iter, const char *property,
 		connmanctl_dbus_append_func_t append_fn,
 		void *append_user_data)
 {
 	DBusMessageIter variant, array;

 	dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING, &property);
 	dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT,
 			DBUS_TYPE_ARRAY_AS_STRING
 				DBUS_TYPE_STRING_AS_STRING,
 			&variant);

 	dbus_message_iter_open_container(&variant, DBUS_TYPE_ARRAY,
 			DBUS_TYPE_STRING_AS_STRING, &array);

 	append_fn(&array, append_user_data);

 	dbus_message_iter_close_container(&variant, &array);
 	dbus_message_iter_close_container(iter, &variant);
 }

 void __connmanctl_dbus_append_dict_string_array(DBusMessageIter *iter,
 		const char *property, connmanctl_dbus_append_func_t append_fn,
 		void *append_user_data)
 {
 	DBusMessageIter dict_entry;

 	dbus_message_iter_open_container(iter, DBUS_TYPE_DICT_ENTRY, NULL,
 			&dict_entry);

 	append_variant_array(&dict_entry, property, append_fn,
 			append_user_data);

 	dbus_message_iter_close_container(iter, &dict_entry);
 }

 int __connmanctl_dbus_set_property_array(DBusConnection *connection,
 		const char *path, const char *interface,
 		connmanctl_dbus_method_return_func_t cb, void *user_data,
 		const char *property, int type,
 		connmanctl_dbus_append_func_t append_fn,
 		void *append_user_data)
 {
 	DBusMessage *message;
 	DBusMessageIter iter;

 	if (type != DBUS_TYPE_STRING)
 		return -EOPNOTSUPP;

 	message = dbus_message_new_method_call("net.connman", path,
 			interface, "SetProperty");

 	if (!message)
 		return -ENOMEM;

 	dbus_message_iter_init_append(message, &iter);

 	append_variant_array(&iter, property, append_fn, append_user_data);

 	return send_method_call(connection, message, cb, user_data);
 }

 int __connmanctl_dbus_session_change(DBusConnection *connection,
 		const char *session_path,
 		connmanctl_dbus_method_return_func_t cb, void * user_data,
 		const char *property, int type, void *value)
 {
 	DBusMessage *message;
 	DBusMessageIter iter;

 	message = dbus_message_new_method_call("net.connman", session_path,
 			"net.connman.Session", "Change");

 	if (!message)
 		return -ENOMEM;

 	dbus_message_iter_init_append(message, &iter);

 	if (append_variant(&iter, property, type, value) < 0) {
 		dbus_message_unref(message);
 		return -EINVAL;
 	}

 	return send_method_call(connection, message, cb, user_data);
 }

 int __connmanctl_dbus_session_change_array(DBusConnection *connection,
 		const char *session_path,
 		connmanctl_dbus_method_return_func_t cb, void *user_data,
 		const char *property,
 		connmanctl_dbus_append_func_t append_fn,
 		void *append_user_data)
 {
 	DBusMessage *message;
 	DBusMessageIter iter;

 	message = dbus_message_new_method_call("net.connman", session_path,
 			"net.connman.Session", "Change");

 	if (!message)
 		return -ENOMEM;

 	dbus_message_iter_init_append(message, &iter);

 	append_variant_array(&iter, property, append_fn, append_user_data);

 	return send_method_call(connection, message, cb, user_data);
 }
	/*
	*
	* Connection Manager
	*
	* Copyright (C) 2013 Intel Corporation. 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 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	*
	*/

	#include <stdio.h>
	#include <errno.h>
	#include <glib.h>

	#include "input.h"
	#include "dbus_helpers.h"

	#define TIMEOUT 120000

	void __connmanctl_dbus_print(DBusMessageIter iter, const char pre,
	const char dict, const char sep)
	{
	int arg_type;
	dbus_bool_t b;
	unsigned char c;
	dbus_uint16_t u16;
	dbus_uint32_t u;
	dbus_int32_t i;
	double d;

	char *str;
	DBusMessageIter entry;

	if (!pre)
	pre = "";

	while ((arg_type = dbus_message_iter_get_arg_type(iter))
	!= DBUS_TYPE_INVALID) {

	fprintf(stdout, "%s", pre);

	switch (arg_type) {
	case DBUS_TYPE_STRUCT:
	fprintf(stdout, "{ ");
	dbus_message_iter_recurse(iter, &entry);
	__connmanctl_dbus_print(&entry, "", "=", " ");
	fprintf(stdout, " }");
	break;

	case DBUS_TYPE_ARRAY:
	fprintf(stdout, "[ ");

	dbus_message_iter_recurse(iter, &entry);
	__connmanctl_dbus_print(&entry, "", "=", ", ");

	fprintf(stdout, " ]");
	break;

	case DBUS_TYPE_DICT_ENTRY:

	dbus_message_iter_recurse(iter, &entry);
	__connmanctl_dbus_print(&entry, "", dict, dict);
	break;

	case DBUS_TYPE_STRING:
	case DBUS_TYPE_OBJECT_PATH:
	dbus_message_iter_get_basic(iter, &str);
	fprintf(stdout, "%s", str);
	break;

	case DBUS_TYPE_VARIANT:
	dbus_message_iter_recurse(iter, &entry);
	__connmanctl_dbus_print(&entry, pre, dict, sep);
	break;

	case DBUS_TYPE_BOOLEAN:
	dbus_message_iter_get_basic(iter, &b);
	if (!b)
	fprintf(stdout, "False");
	else
	fprintf(stdout, "True");
	break;

	case DBUS_TYPE_BYTE:
	dbus_message_iter_get_basic(iter, &c);
	fprintf(stdout, "%d", c);
	break;

	case DBUS_TYPE_UINT16:
	dbus_message_iter_get_basic(iter, &u16);
	fprintf(stdout, "%u", u16);
	break;

	case DBUS_TYPE_UINT32:
	dbus_message_iter_get_basic(iter, &u);
	fprintf(stdout, "%d", u);
	break;

	case DBUS_TYPE_INT32:
	dbus_message_iter_get_basic(iter, &i);
	fprintf(stdout, "%d", i);
	break;

	case DBUS_TYPE_DOUBLE:
	dbus_message_iter_get_basic(iter, &d);
	fprintf(stdout, "%f", d);
	break;

	default:
	fprintf(stdout, "<type %c>", arg_type);
	break;
	}

	if (dbus_message_iter_has_next(iter))
	fprintf(stdout, "%s", sep);

	dbus_message_iter_next(iter);
	}
	}

	struct dbus_callback {
	connmanctl_dbus_method_return_func_t cb;
	void *user_data;
	};

	static void dbus_method_reply(DBusPendingCall call, void user_data)
	{
	struct dbus_callback *callback = user_data;
	int res = 0;
	DBusMessage *reply;
	DBusMessageIter iter;

	__connmanctl_save_rl();

	reply = dbus_pending_call_steal_reply(call);
	if (dbus_message_get_type(reply) == DBUS_MESSAGE_TYPE_ERROR) {
	DBusError err;

	dbus_error_init(&err);
	dbus_set_error_from_message(&err, reply);

	callback->cb(NULL, err.message, callback->user_data);

	dbus_error_free(&err);
	goto end;
	}

	dbus_message_iter_init(reply, &iter);
	res = callback->cb(&iter, NULL, callback->user_data);

	end:
	__connmanctl_redraw_rl();
	if (__connmanctl_is_interactive() == false && res != -EINPROGRESS)
	__connmanctl_quit();

	g_free(callback);
	dbus_message_unref(reply);
	}

	static int send_method_call(DBusConnection *connection,
	DBusMessage *message, connmanctl_dbus_method_return_func_t cb,
	void *user_data)
	{
	int res = -ENXIO;
	DBusPendingCall *call;
	struct dbus_callback *callback;

	if (!dbus_connection_send_with_reply(connection, message, &call, TIMEOUT))
	goto end;

	if (!call)
	goto end;

	if (cb) {
	callback = g_new0(struct dbus_callback, 1);
	callback->cb = cb;
	callback->user_data = user_data;
	dbus_pending_call_set_notify(call, dbus_method_reply,
	callback, NULL);
	res = -EINPROGRESS;
	}

	end:
	dbus_message_unref(message);
	return res;
	}

	static int append_variant(DBusMessageIter iter, const char property,
	int type, void *value)
	{
	DBusMessageIter variant;
	char *type_str;

	switch(type) {
	case DBUS_TYPE_BOOLEAN:
	type_str = DBUS_TYPE_BOOLEAN_AS_STRING;
	break;
	case DBUS_TYPE_BYTE:
	type_str = DBUS_TYPE_BYTE_AS_STRING;
	break;
	case DBUS_TYPE_STRING:
	type_str = DBUS_TYPE_STRING_AS_STRING;
	break;
	case DBUS_TYPE_INT32:
	type_str = DBUS_TYPE_INT32_AS_STRING;
	break;
	default:
	return -EOPNOTSUPP;
	}

	dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING, &property);
	dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type_str,
	&variant);
	dbus_message_iter_append_basic(&variant, type, value);
	dbus_message_iter_close_container(iter, &variant);

	return 0;
	}

	int __connmanctl_dbus_method_call(DBusConnection *connection,
	const char service, const char path, const char *interface,
	const char *method, connmanctl_dbus_method_return_func_t cb,
	void *user_data, connmanctl_dbus_append_func_t append_func,
	void *append_data)
	{
	DBusMessage *message;
	DBusMessageIter iter;

	message = dbus_message_new_method_call(service, path, interface,
	method);

	if (!message)
	return -ENOMEM;

	if (append_func) {
	dbus_message_iter_init_append(message, &iter);
	append_func(&iter, append_data);
	}

	return send_method_call(connection, message, cb, user_data);
	}

	int __connmanctl_dbus_set_property(DBusConnection *connection,
	const char path, const char interface,
	connmanctl_dbus_method_return_func_t cb, void * user_data,
	const char property, int type, void value)
	{
	DBusMessage *message;
	DBusMessageIter iter;

	message = dbus_message_new_method_call("net.connman", path,
	interface, "SetProperty");

	if (!message)
	return -ENOMEM;

	dbus_message_iter_init_append(message, &iter);

	if (append_variant(&iter, property, type, value) < 0) {
	dbus_message_unref(message);
	return -EINVAL;
	}

	return send_method_call(connection, message, cb, user_data);
	}

	void __connmanctl_dbus_append_dict(DBusMessageIter *iter,
	connmanctl_dbus_append_func_t append_fn, void *append_data)
	{
	DBusMessageIter dict;

	dbus_message_iter_open_container(iter, DBUS_TYPE_ARRAY,
	DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
	DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_VARIANT_AS_STRING
	DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &dict);

	if (append_fn)
	append_fn(&dict, append_data);

	dbus_message_iter_close_container(iter, &dict);
	}

	void __connmanctl_dbus_append_dict_entry(DBusMessageIter *iter,
	const char property, int type, void value)
	{
	DBusMessageIter dict_entry;

	dbus_message_iter_open_container(iter, DBUS_TYPE_DICT_ENTRY, NULL,
	&dict_entry);

	append_variant(&dict_entry, property, type, value);

	dbus_message_iter_close_container(iter, &dict_entry);
	}

	int __connmanctl_dbus_set_property_dict(DBusConnection *connection,
	const char path, const char interface,
	connmanctl_dbus_method_return_func_t cb, void *user_data,
	const char *property, int type,
	connmanctl_dbus_append_func_t append_fn,
	void *append_user_data)
	{
	DBusMessage *message;
	DBusMessageIter iter, variant, dict;

	message = dbus_message_new_method_call("net.connman", path,
	interface, "SetProperty");

	if (!message)
	return -ENOMEM;

	dbus_message_iter_init_append(message, &iter);
	dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &property);
	dbus_message_iter_open_container(&iter, DBUS_TYPE_VARIANT,
	DBUS_TYPE_ARRAY_AS_STRING
	DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
	DBUS_TYPE_STRING_AS_STRING
	DBUS_TYPE_VARIANT_AS_STRING
	DBUS_DICT_ENTRY_END_CHAR_AS_STRING,
	&variant);

	dbus_message_iter_open_container(&variant, DBUS_TYPE_ARRAY,
	DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
	DBUS_TYPE_STRING_AS_STRING
	DBUS_TYPE_VARIANT_AS_STRING
	DBUS_DICT_ENTRY_END_CHAR_AS_STRING,
	&dict);

	append_fn(&dict, append_user_data);

	dbus_message_iter_close_container(&variant, &dict);
	dbus_message_iter_close_container(&iter, &variant);

	return send_method_call(connection, message, cb, user_data);
	}

	static void append_variant_array(DBusMessageIter iter, const char property,
	connmanctl_dbus_append_func_t append_fn,
	void *append_user_data)
	{
	DBusMessageIter variant, array;

	dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING, &property);
	dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT,
	DBUS_TYPE_ARRAY_AS_STRING
	DBUS_TYPE_STRING_AS_STRING,
	&variant);

	dbus_message_iter_open_container(&variant, DBUS_TYPE_ARRAY,
	DBUS_TYPE_STRING_AS_STRING, &array);

	append_fn(&array, append_user_data);

	dbus_message_iter_close_container(&variant, &array);
	dbus_message_iter_close_container(iter, &variant);
	}

	void __connmanctl_dbus_append_dict_string_array(DBusMessageIter *iter,
	const char *property, connmanctl_dbus_append_func_t append_fn,
	void *append_user_data)
	{
	DBusMessageIter dict_entry;

	dbus_message_iter_open_container(iter, DBUS_TYPE_DICT_ENTRY, NULL,
	&dict_entry);

	append_variant_array(&dict_entry, property, append_fn,
	append_user_data);

	dbus_message_iter_close_container(iter, &dict_entry);
	}

	int __connmanctl_dbus_set_property_array(DBusConnection *connection,
	const char path, const char interface,
	connmanctl_dbus_method_return_func_t cb, void *user_data,
	const char *property, int type,
	connmanctl_dbus_append_func_t append_fn,
	void *append_user_data)
	{
	DBusMessage *message;
	DBusMessageIter iter;

	if (type != DBUS_TYPE_STRING)
	return -EOPNOTSUPP;

	message = dbus_message_new_method_call("net.connman", path,
	interface, "SetProperty");

	if (!message)
	return -ENOMEM;

	dbus_message_iter_init_append(message, &iter);

	append_variant_array(&iter, property, append_fn, append_user_data);

	return send_method_call(connection, message, cb, user_data);
	}

	int __connmanctl_dbus_session_change(DBusConnection *connection,
	const char *session_path,
	connmanctl_dbus_method_return_func_t cb, void * user_data,
	const char property, int type, void value)
	{
	DBusMessage *message;
	DBusMessageIter iter;

	message = dbus_message_new_method_call("net.connman", session_path,
	"net.connman.Session", "Change");

	if (!message)
	return -ENOMEM;

	dbus_message_iter_init_append(message, &iter);

	if (append_variant(&iter, property, type, value) < 0) {
	dbus_message_unref(message);
	return -EINVAL;
	}

	return send_method_call(connection, message, cb, user_data);
	}

	int __connmanctl_dbus_session_change_array(DBusConnection *connection,
	const char *session_path,
	connmanctl_dbus_method_return_func_t cb, void *user_data,
	const char *property,
	connmanctl_dbus_append_func_t append_fn,
	void *append_user_data)
	{
	DBusMessage *message;
	DBusMessageIter iter;

	message = dbus_message_new_method_call("net.connman", session_path,
	"net.connman.Session", "Change");

	if (!message)
	return -ENOMEM;

	dbus_message_iter_init_append(message, &iter);

	append_variant_array(&iter, property, append_fn, append_user_data);

	return send_method_call(connection, message, cb, user_data);
	}