daemon/auth-agent.c - bluez-imx - Git at Google

 /*
  *
  *  BlueZ - Bluetooth protocol stack for Linux
  *
  *  Copyright (C) 2004-2007  Marcel Holtmann <marcel@holtmann.org>
  *
  *
  *  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
  *
  */

 #ifdef HAVE_CONFIG_H
 #include <config.h>
 #endif

 #include <stdio.h>
 #include <errno.h>
 #include <unistd.h>
 #include <stdlib.h>
 #include <signal.h>
 #include <getopt.h>
 #include <string.h>

 #include <dbus/dbus.h>

 #define INTERFACE "org.bluez.Security"

 static volatile sig_atomic_t __io_canceled = 0;
 static volatile sig_atomic_t __io_terminated = 0;

 static void sig_term(int sig)
 {
 	__io_canceled = 1;
 }

 static DBusHandlerResult agent_filter(DBusConnection *conn,
 						DBusMessage *msg, void *data)
 {
 	const char *name, *old, *new;

 	if (!dbus_message_is_signal(msg, DBUS_INTERFACE_DBUS, "NameOwnerChanged"))
 		return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;

 	if (!dbus_message_get_args(msg, NULL,
 			DBUS_TYPE_STRING, &name, DBUS_TYPE_STRING, &old,
 				DBUS_TYPE_STRING, &new, DBUS_TYPE_INVALID)) {
 		fprintf(stderr, "Invalid arguments for NameOwnerChanged signal");
 		return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 	}

 	if (!strcmp(name, "org.bluez") && *new == '\0') {
 		fprintf(stderr, "Authorization service has been terminated\n");
 		__io_terminated = 1;
 	}

 	return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 }

 static DBusHandlerResult authorize_message(DBusConnection *conn,
 						DBusMessage *msg, void *data)
 {
 	DBusMessage *reply;
 	const char *adapter, *address, *service, *string;

 	if (!dbus_message_get_args(msg, NULL,
 			DBUS_TYPE_STRING, &adapter, DBUS_TYPE_STRING, &address,
 			DBUS_TYPE_STRING, &service, DBUS_TYPE_STRING, &string,
 							DBUS_TYPE_INVALID)) {
 		fprintf(stderr, "Invalid arguments for passkey Confirm method");
 		return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 	}

 	printf("Authorization request for device %s\n", address);

 	reply = dbus_message_new_method_return(msg);
 	if (!reply) {
 		fprintf(stderr, "Can't create reply message\n");
 		return DBUS_HANDLER_RESULT_NEED_MEMORY;
 	}

 	dbus_connection_send(conn, reply, NULL);

 	dbus_connection_flush(conn);

 	dbus_message_unref(reply);

 	return DBUS_HANDLER_RESULT_HANDLED;
 }

 static DBusHandlerResult cancel_message(DBusConnection *conn,
 						DBusMessage *msg, void *data)
 {
 	DBusMessage *reply;
 	const char *adapter, *address, *service, *string;

 	if (!dbus_message_get_args(msg, NULL,
 			DBUS_TYPE_STRING, &adapter, DBUS_TYPE_STRING, &address,
 			DBUS_TYPE_STRING, &service, DBUS_TYPE_STRING, &string,
 							DBUS_TYPE_INVALID)) {
 		fprintf(stderr, "Invalid arguments for passkey Confirm method");
 		return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 	}

 	printf("Request canceled for device %s\n", address);

 	reply = dbus_message_new_method_return(msg);
 	if (!reply) {
 		fprintf(stderr, "Can't create reply message\n");
 		return DBUS_HANDLER_RESULT_NEED_MEMORY;
 	}

 	dbus_connection_send(conn, reply, NULL);

 	dbus_connection_flush(conn);

 	dbus_message_unref(reply);

 	return DBUS_HANDLER_RESULT_HANDLED;
 }

 static DBusHandlerResult release_message(DBusConnection *conn,
 						DBusMessage *msg, void *data)
 {
 	DBusMessage *reply;

 	if (!dbus_message_get_args(msg, NULL, DBUS_TYPE_INVALID)) {
 		fprintf(stderr, "Invalid arguments for Release method");
 		return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 	}

 	if (!__io_canceled)
 		fprintf(stderr, "Authorization agent has been released\n");

 	__io_terminated = 1;

 	reply = dbus_message_new_method_return(msg);
 	if (!reply) {
 		fprintf(stderr, "Can't create reply message\n");
 		return DBUS_HANDLER_RESULT_NEED_MEMORY;
 	}

 	dbus_connection_send(conn, reply, NULL);

 	dbus_connection_flush(conn);

 	dbus_message_unref(reply);

 	return DBUS_HANDLER_RESULT_HANDLED;
 }

 static DBusHandlerResult auth_message(DBusConnection *conn,
 						DBusMessage *msg, void *data)
 {
 	if (dbus_message_is_method_call(msg, "org.bluez.AuthorizationAgent", "Authorize"))
 		return authorize_message(conn, msg, data);

 	if (dbus_message_is_method_call(msg, "org.bluez.AuthorizationAgent", "Cancel"))
 		return cancel_message(conn, msg, data);

 	if (dbus_message_is_method_call(msg, "org.bluez.AuthorizationAgent", "Release"))
 		return release_message(conn, msg, data);

 	return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 }

 static const DBusObjectPathVTable auth_table = {
 	.message_function = auth_message,
 };

 static int register_auth(DBusConnection *conn, const char *auth_path)
 {
 	DBusMessage *msg, *reply;
 	DBusError err;

 	if (!dbus_connection_register_object_path(conn, auth_path,
 							&auth_table, NULL)) {
 		fprintf(stderr, "Can't register object path for agent\n");
 		return -1;
 	}

 	msg = dbus_message_new_method_call("org.bluez", "/org/bluez",
 			INTERFACE, "RegisterDefaultAuthorizationAgent");
 	if (!msg) {
 		fprintf(stderr, "Can't allocate new method call\n");
 		return -1;
 	}

 	dbus_message_append_args(msg, DBUS_TYPE_STRING, &auth_path,
 							DBUS_TYPE_INVALID);

 	dbus_error_init(&err);

 	reply = dbus_connection_send_with_reply_and_block(conn, msg, -1, &err);

 	dbus_message_unref(msg);

 	if (!reply) {
 		fprintf(stderr, "Can't register authorization agent\n");
 		if (dbus_error_is_set(&err)) {
 			fprintf(stderr, "%s\n", err.message);
 			dbus_error_free(&err);
 		}
 		return -1;
 	}

 	dbus_message_unref(reply);

 	dbus_connection_flush(conn);

 	return 0;
 }

 static int unregister_auth(DBusConnection *conn, const char *auth_path)
 {
 	DBusMessage *msg, *reply;
 	DBusError err;

 	msg = dbus_message_new_method_call("org.bluez", "/org/bluez",
 			INTERFACE, "UnregisterDefaultAuthorizationAgent");
 	if (!msg) {
 		fprintf(stderr, "Can't allocate new method call\n");
 		dbus_connection_unref(conn);
 		exit(1);
 	}

 	dbus_message_append_args(msg, DBUS_TYPE_STRING, &auth_path,
 							DBUS_TYPE_INVALID);

 	dbus_error_init(&err);

 	reply = dbus_connection_send_with_reply_and_block(conn, msg, -1, &err);

 	dbus_message_unref(msg);

 	if (!reply) {
 		fprintf(stderr, "Can't unregister authorization agent\n");
 		if (dbus_error_is_set(&err)) {
 			fprintf(stderr, "%s\n", err.message);
 			dbus_error_free(&err);
 		}
 		return -1;
 	}

 	dbus_message_unref(reply);

 	dbus_connection_flush(conn);

 	dbus_connection_unregister_object_path(conn, auth_path);

 	return 0;
 }

 static void usage(void)
 {
 	printf("Bluetooth authorization agent ver %s\n\n", VERSION);

 	printf("Usage:\n"
 		"\tauth-agent [--path auth-path]\n"
 		"\n");
 }

 static struct option main_options[] = {
 	{ "path",		1, 0, 'p' },
 	{ "help",		0, 0, 'h' },
 	{ 0, 0, 0, 0 }
 };

 int main(int argc, char *argv[])
 {
 	struct sigaction sa;
 	DBusConnection *conn;
 	char match_string[128], default_path[128], *auth_path = NULL;
 	int opt;

 	snprintf(default_path, sizeof(default_path),
 				"/org/bluez/auth_agent_%d", getpid());

 	while ((opt = getopt_long(argc, argv, "+p:h", main_options, NULL)) != EOF) {
 		switch(opt) {
 		case 'p':
 			if (optarg[0] != '/') {
 				fprintf(stderr, "Invalid path\n");
 				exit(1);
 			}
 			auth_path = strdup(optarg);
 			break;
 		case 'h':
 			usage();
 			exit(0);
 		default:
 			exit(1);
 		}
 	}

 	argc -= optind;
 	argv += optind;
 	optind = 0;

 	if (!auth_path)
 		auth_path = strdup(default_path);

 	conn = dbus_bus_get(DBUS_BUS_SYSTEM, NULL);
 	if (!conn) {
 		fprintf(stderr, "Can't get on system bus");
 		exit(1);
 	}

 	if (register_auth(conn, auth_path) < 0) {
 		dbus_connection_unref(conn);
 		exit(1);
 	}

 	if (!dbus_connection_add_filter(conn, agent_filter, NULL, NULL))
 		fprintf(stderr, "Can't add signal filter");

 	snprintf(match_string, sizeof(match_string),
 			"interface=%s,member=NameOwnerChanged,arg0=%s",
 					DBUS_INTERFACE_DBUS, "org.bluez");

 	dbus_bus_add_match(conn, match_string, NULL);

 	memset(&sa, 0, sizeof(sa));
 	sa.sa_flags   = SA_NOCLDSTOP;
 	sa.sa_handler = sig_term;
 	sigaction(SIGTERM, &sa, NULL);
 	sigaction(SIGINT,  &sa, NULL);

 	while (!__io_canceled && !__io_terminated) {
 		if (dbus_connection_read_write_dispatch(conn, 500) != TRUE)
 			break;
 	}

 	if (!__io_terminated)
 		unregister_auth(conn, auth_path);

 	dbus_connection_unref(conn);

 	return 0;
 }
	/*
	*
	* BlueZ - Bluetooth protocol stack for Linux
	*
	* Copyright (C) 2004-2007 Marcel Holtmann <marcel@holtmann.org>
	*
	*
	* 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
	*
	*/

	#ifdef HAVE_CONFIG_H
	#include <config.h>
	#endif

	#include <stdio.h>
	#include <errno.h>
	#include <unistd.h>
	#include <stdlib.h>
	#include <signal.h>
	#include <getopt.h>
	#include <string.h>

	#include <dbus/dbus.h>

	#define INTERFACE "org.bluez.Security"

	static volatile sig_atomic_t __io_canceled = 0;
	static volatile sig_atomic_t __io_terminated = 0;

	static void sig_term(int sig)
	{
	__io_canceled = 1;
	}

	static DBusHandlerResult agent_filter(DBusConnection *conn,
	DBusMessage msg, void data)
	{
	const char name, old, *new;

	if (!dbus_message_is_signal(msg, DBUS_INTERFACE_DBUS, "NameOwnerChanged"))
	return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;

	if (!dbus_message_get_args(msg, NULL,
	DBUS_TYPE_STRING, &name, DBUS_TYPE_STRING, &old,
	DBUS_TYPE_STRING, &new, DBUS_TYPE_INVALID)) {
	fprintf(stderr, "Invalid arguments for NameOwnerChanged signal");
	return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
	}

	if (!strcmp(name, "org.bluez") && *new == '\0') {
	fprintf(stderr, "Authorization service has been terminated\n");
	__io_terminated = 1;
	}

	return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
	}

	static DBusHandlerResult authorize_message(DBusConnection *conn,
	DBusMessage msg, void data)
	{
	DBusMessage *reply;
	const char adapter, address, service, string;

	if (!dbus_message_get_args(msg, NULL,
	DBUS_TYPE_STRING, &adapter, DBUS_TYPE_STRING, &address,
	DBUS_TYPE_STRING, &service, DBUS_TYPE_STRING, &string,
	DBUS_TYPE_INVALID)) {
	fprintf(stderr, "Invalid arguments for passkey Confirm method");
	return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
	}

	printf("Authorization request for device %s\n", address);

	reply = dbus_message_new_method_return(msg);
	if (!reply) {
	fprintf(stderr, "Can't create reply message\n");
	return DBUS_HANDLER_RESULT_NEED_MEMORY;
	}

	dbus_connection_send(conn, reply, NULL);

	dbus_connection_flush(conn);

	dbus_message_unref(reply);

	return DBUS_HANDLER_RESULT_HANDLED;
	}

	static DBusHandlerResult cancel_message(DBusConnection *conn,
	DBusMessage msg, void data)
	{
	DBusMessage *reply;
	const char adapter, address, service, string;

	if (!dbus_message_get_args(msg, NULL,
	DBUS_TYPE_STRING, &adapter, DBUS_TYPE_STRING, &address,
	DBUS_TYPE_STRING, &service, DBUS_TYPE_STRING, &string,
	DBUS_TYPE_INVALID)) {
	fprintf(stderr, "Invalid arguments for passkey Confirm method");
	return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
	}

	printf("Request canceled for device %s\n", address);

	reply = dbus_message_new_method_return(msg);
	if (!reply) {
	fprintf(stderr, "Can't create reply message\n");
	return DBUS_HANDLER_RESULT_NEED_MEMORY;
	}

	dbus_connection_send(conn, reply, NULL);

	dbus_connection_flush(conn);

	dbus_message_unref(reply);

	return DBUS_HANDLER_RESULT_HANDLED;
	}

	static DBusHandlerResult release_message(DBusConnection *conn,
	DBusMessage msg, void data)
	{
	DBusMessage *reply;

	if (!dbus_message_get_args(msg, NULL, DBUS_TYPE_INVALID)) {
	fprintf(stderr, "Invalid arguments for Release method");
	return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
	}

	if (!__io_canceled)
	fprintf(stderr, "Authorization agent has been released\n");

	__io_terminated = 1;

	reply = dbus_message_new_method_return(msg);
	if (!reply) {
	fprintf(stderr, "Can't create reply message\n");
	return DBUS_HANDLER_RESULT_NEED_MEMORY;
	}

	dbus_connection_send(conn, reply, NULL);

	dbus_connection_flush(conn);

	dbus_message_unref(reply);

	return DBUS_HANDLER_RESULT_HANDLED;
	}

	static DBusHandlerResult auth_message(DBusConnection *conn,
	DBusMessage msg, void data)
	{
	if (dbus_message_is_method_call(msg, "org.bluez.AuthorizationAgent", "Authorize"))
	return authorize_message(conn, msg, data);

	if (dbus_message_is_method_call(msg, "org.bluez.AuthorizationAgent", "Cancel"))
	return cancel_message(conn, msg, data);

	if (dbus_message_is_method_call(msg, "org.bluez.AuthorizationAgent", "Release"))
	return release_message(conn, msg, data);

	return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
	}

	static const DBusObjectPathVTable auth_table = {
	.message_function = auth_message,
	};

	static int register_auth(DBusConnection conn, const char auth_path)
	{
	DBusMessage msg, reply;
	DBusError err;

	if (!dbus_connection_register_object_path(conn, auth_path,
	&auth_table, NULL)) {
	fprintf(stderr, "Can't register object path for agent\n");
	return -1;
	}

	msg = dbus_message_new_method_call("org.bluez", "/org/bluez",
	INTERFACE, "RegisterDefaultAuthorizationAgent");
	if (!msg) {
	fprintf(stderr, "Can't allocate new method call\n");
	return -1;
	}

	dbus_message_append_args(msg, DBUS_TYPE_STRING, &auth_path,
	DBUS_TYPE_INVALID);

	dbus_error_init(&err);

	reply = dbus_connection_send_with_reply_and_block(conn, msg, -1, &err);

	dbus_message_unref(msg);

	if (!reply) {
	fprintf(stderr, "Can't register authorization agent\n");
	if (dbus_error_is_set(&err)) {
	fprintf(stderr, "%s\n", err.message);
	dbus_error_free(&err);
	}
	return -1;
	}

	dbus_message_unref(reply);

	dbus_connection_flush(conn);

	return 0;
	}

	static int unregister_auth(DBusConnection conn, const char auth_path)
	{
	DBusMessage msg, reply;
	DBusError err;

	msg = dbus_message_new_method_call("org.bluez", "/org/bluez",
	INTERFACE, "UnregisterDefaultAuthorizationAgent");
	if (!msg) {
	fprintf(stderr, "Can't allocate new method call\n");
	dbus_connection_unref(conn);
	exit(1);
	}

	dbus_message_append_args(msg, DBUS_TYPE_STRING, &auth_path,
	DBUS_TYPE_INVALID);

	dbus_error_init(&err);

	reply = dbus_connection_send_with_reply_and_block(conn, msg, -1, &err);

	dbus_message_unref(msg);

	if (!reply) {
	fprintf(stderr, "Can't unregister authorization agent\n");
	if (dbus_error_is_set(&err)) {
	fprintf(stderr, "%s\n", err.message);
	dbus_error_free(&err);
	}
	return -1;
	}

	dbus_message_unref(reply);

	dbus_connection_flush(conn);

	dbus_connection_unregister_object_path(conn, auth_path);

	return 0;
	}

	static void usage(void)
	{
	printf("Bluetooth authorization agent ver %s\n\n", VERSION);

	printf("Usage:\n"
	"\tauth-agent [--path auth-path]\n"
	"\n");
	}

	static struct option main_options[] = {
	{ "path", 1, 0, 'p' },
	{ "help", 0, 0, 'h' },
	{ 0, 0, 0, 0 }
	};

	int main(int argc, char *argv[])
	{
	struct sigaction sa;
	DBusConnection *conn;
	char match_string[128], default_path[128], *auth_path = NULL;
	int opt;

	snprintf(default_path, sizeof(default_path),
	"/org/bluez/auth_agent_%d", getpid());

	while ((opt = getopt_long(argc, argv, "+p:h", main_options, NULL)) != EOF) {
	switch(opt) {
	case 'p':
	if (optarg[0] != '/') {
	fprintf(stderr, "Invalid path\n");
	exit(1);
	}
	auth_path = strdup(optarg);
	break;
	case 'h':
	usage();
	exit(0);
	default:
	exit(1);
	}
	}

	argc -= optind;
	argv += optind;
	optind = 0;

	if (!auth_path)
	auth_path = strdup(default_path);

	conn = dbus_bus_get(DBUS_BUS_SYSTEM, NULL);
	if (!conn) {
	fprintf(stderr, "Can't get on system bus");
	exit(1);
	}

	if (register_auth(conn, auth_path) < 0) {
	dbus_connection_unref(conn);
	exit(1);
	}

	if (!dbus_connection_add_filter(conn, agent_filter, NULL, NULL))
	fprintf(stderr, "Can't add signal filter");

	snprintf(match_string, sizeof(match_string),
	"interface=%s,member=NameOwnerChanged,arg0=%s",
	DBUS_INTERFACE_DBUS, "org.bluez");

	dbus_bus_add_match(conn, match_string, NULL);

	memset(&sa, 0, sizeof(sa));
	sa.sa_flags = SA_NOCLDSTOP;
	sa.sa_handler = sig_term;
	sigaction(SIGTERM, &sa, NULL);
	sigaction(SIGINT, &sa, NULL);

	while (!__io_canceled && !__io_terminated) {
	if (dbus_connection_read_write_dispatch(conn, 500) != TRUE)
	break;
	}

	if (!__io_terminated)
	unregister_auth(conn, auth_path);

	dbus_connection_unref(conn);

	return 0;
	}