mirror of
https://git.kernel.org/pub/scm/bluetooth/bluez.git
synced 2024-12-02 08:34:26 +08:00
352 lines
8.4 KiB
C
352 lines
8.4 KiB
C
/*
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*
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* BlueZ - Bluetooth protocol stack for Linux
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*
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* Copyright (C) 2004-2007 Marcel Holtmann <marcel@holtmann.org>
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdio.h>
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#include <errno.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <signal.h>
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#include <getopt.h>
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#include <string.h>
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#include <dbus/dbus.h>
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#define INTERFACE "org.bluez.Security"
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static volatile sig_atomic_t __io_canceled = 0;
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static volatile sig_atomic_t __io_terminated = 0;
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static void sig_term(int sig)
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{
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__io_canceled = 1;
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}
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static DBusHandlerResult agent_filter(DBusConnection *conn,
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DBusMessage *msg, void *data)
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{
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const char *name, *old, *new;
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if (!dbus_message_is_signal(msg, DBUS_INTERFACE_DBUS, "NameOwnerChanged"))
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return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
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if (!dbus_message_get_args(msg, NULL,
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DBUS_TYPE_STRING, &name, DBUS_TYPE_STRING, &old,
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DBUS_TYPE_STRING, &new, DBUS_TYPE_INVALID)) {
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fprintf(stderr, "Invalid arguments for NameOwnerChanged signal");
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return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
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}
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if (!strcmp(name, "org.bluez") && *new == '\0') {
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fprintf(stderr, "Authorization service has been terminated\n");
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__io_terminated = 1;
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}
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return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
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}
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static DBusHandlerResult authorize_message(DBusConnection *conn,
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DBusMessage *msg, void *data)
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{
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DBusMessage *reply;
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const char *adapter, *address, *service, *string;
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if (!dbus_message_get_args(msg, NULL,
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DBUS_TYPE_STRING, &adapter, DBUS_TYPE_STRING, &address,
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DBUS_TYPE_STRING, &service, DBUS_TYPE_STRING, &string,
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DBUS_TYPE_INVALID)) {
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fprintf(stderr, "Invalid arguments for passkey Confirm method");
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return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
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}
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printf("Authorization request for device %s\n", address);
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reply = dbus_message_new_method_return(msg);
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if (!reply) {
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fprintf(stderr, "Can't create reply message\n");
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return DBUS_HANDLER_RESULT_NEED_MEMORY;
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}
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dbus_connection_send(conn, reply, NULL);
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dbus_connection_flush(conn);
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dbus_message_unref(reply);
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return DBUS_HANDLER_RESULT_HANDLED;
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}
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static DBusHandlerResult cancel_message(DBusConnection *conn,
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DBusMessage *msg, void *data)
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{
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DBusMessage *reply;
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const char *adapter, *address, *service, *string;
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if (!dbus_message_get_args(msg, NULL,
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DBUS_TYPE_STRING, &adapter, DBUS_TYPE_STRING, &address,
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DBUS_TYPE_STRING, &service, DBUS_TYPE_STRING, &string,
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DBUS_TYPE_INVALID)) {
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fprintf(stderr, "Invalid arguments for passkey Confirm method");
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return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
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}
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printf("Request canceled for device %s\n", address);
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reply = dbus_message_new_method_return(msg);
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if (!reply) {
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fprintf(stderr, "Can't create reply message\n");
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return DBUS_HANDLER_RESULT_NEED_MEMORY;
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}
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dbus_connection_send(conn, reply, NULL);
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dbus_connection_flush(conn);
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dbus_message_unref(reply);
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return DBUS_HANDLER_RESULT_HANDLED;
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}
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static DBusHandlerResult release_message(DBusConnection *conn,
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DBusMessage *msg, void *data)
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{
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DBusMessage *reply;
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if (!dbus_message_get_args(msg, NULL, DBUS_TYPE_INVALID)) {
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fprintf(stderr, "Invalid arguments for Release method");
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return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
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}
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if (!__io_canceled)
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fprintf(stderr, "Authorization agent has been released\n");
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__io_terminated = 1;
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reply = dbus_message_new_method_return(msg);
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if (!reply) {
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fprintf(stderr, "Can't create reply message\n");
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return DBUS_HANDLER_RESULT_NEED_MEMORY;
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}
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dbus_connection_send(conn, reply, NULL);
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dbus_connection_flush(conn);
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dbus_message_unref(reply);
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return DBUS_HANDLER_RESULT_HANDLED;
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}
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static DBusHandlerResult auth_message(DBusConnection *conn,
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DBusMessage *msg, void *data)
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{
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if (dbus_message_is_method_call(msg, "org.bluez.AuthorizationAgent", "Authorize"))
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return authorize_message(conn, msg, data);
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if (dbus_message_is_method_call(msg, "org.bluez.AuthorizationAgent", "Cancel"))
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return cancel_message(conn, msg, data);
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if (dbus_message_is_method_call(msg, "org.bluez.AuthorizationAgent", "Release"))
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return release_message(conn, msg, data);
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return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
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}
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static const DBusObjectPathVTable auth_table = {
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.message_function = auth_message,
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};
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static int register_auth(DBusConnection *conn, const char *auth_path)
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{
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DBusMessage *msg, *reply;
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DBusError err;
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if (!dbus_connection_register_object_path(conn, auth_path,
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&auth_table, NULL)) {
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fprintf(stderr, "Can't register object path for agent\n");
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return -1;
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}
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msg = dbus_message_new_method_call("org.bluez", "/org/bluez",
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INTERFACE, "RegisterDefaultAuthorizationAgent");
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if (!msg) {
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fprintf(stderr, "Can't allocate new method call\n");
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return -1;
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}
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dbus_message_append_args(msg, DBUS_TYPE_STRING, &auth_path,
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DBUS_TYPE_INVALID);
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dbus_error_init(&err);
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reply = dbus_connection_send_with_reply_and_block(conn, msg, -1, &err);
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dbus_message_unref(msg);
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if (!reply) {
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fprintf(stderr, "Can't register authorization agent\n");
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if (dbus_error_is_set(&err)) {
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fprintf(stderr, "%s\n", err.message);
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dbus_error_free(&err);
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}
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return -1;
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}
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dbus_message_unref(reply);
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dbus_connection_flush(conn);
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return 0;
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}
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static int unregister_auth(DBusConnection *conn, const char *auth_path)
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{
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DBusMessage *msg, *reply;
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DBusError err;
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msg = dbus_message_new_method_call("org.bluez", "/org/bluez",
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INTERFACE, "UnregisterDefaultAuthorizationAgent");
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if (!msg) {
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fprintf(stderr, "Can't allocate new method call\n");
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dbus_connection_unref(conn);
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exit(1);
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}
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dbus_message_append_args(msg, DBUS_TYPE_STRING, &auth_path,
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DBUS_TYPE_INVALID);
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dbus_error_init(&err);
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reply = dbus_connection_send_with_reply_and_block(conn, msg, -1, &err);
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dbus_message_unref(msg);
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if (!reply) {
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fprintf(stderr, "Can't unregister authorization agent\n");
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if (dbus_error_is_set(&err)) {
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fprintf(stderr, "%s\n", err.message);
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dbus_error_free(&err);
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}
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return -1;
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}
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dbus_message_unref(reply);
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dbus_connection_flush(conn);
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dbus_connection_unregister_object_path(conn, auth_path);
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return 0;
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}
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static void usage(void)
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{
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printf("Bluetooth authorization agent ver %s\n\n", VERSION);
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printf("Usage:\n"
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"\tauth-agent [--path auth-path]\n"
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"\n");
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}
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static struct option main_options[] = {
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{ "path", 1, 0, 'p' },
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{ "help", 0, 0, 'h' },
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{ 0, 0, 0, 0 }
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};
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int main(int argc, char *argv[])
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{
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struct sigaction sa;
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DBusConnection *conn;
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char match_string[128], default_path[128], *auth_path = NULL;
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int opt;
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snprintf(default_path, sizeof(default_path),
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"/org/bluez/auth_agent_%d", getpid());
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while ((opt = getopt_long(argc, argv, "+p:h", main_options, NULL)) != EOF) {
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switch(opt) {
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case 'p':
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if (optarg[0] != '/') {
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fprintf(stderr, "Invalid path\n");
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exit(1);
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}
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auth_path = strdup(optarg);
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break;
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case 'h':
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usage();
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exit(0);
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default:
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exit(1);
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}
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}
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argc -= optind;
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argv += optind;
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optind = 0;
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if (!auth_path)
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auth_path = strdup(default_path);
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conn = dbus_bus_get(DBUS_BUS_SYSTEM, NULL);
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if (!conn) {
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fprintf(stderr, "Can't get on system bus");
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exit(1);
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}
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if (register_auth(conn, auth_path) < 0) {
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dbus_connection_unref(conn);
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exit(1);
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}
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if (!dbus_connection_add_filter(conn, agent_filter, NULL, NULL))
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fprintf(stderr, "Can't add signal filter");
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snprintf(match_string, sizeof(match_string),
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"interface=%s,member=NameOwnerChanged,arg0=%s",
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DBUS_INTERFACE_DBUS, "org.bluez");
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dbus_bus_add_match(conn, match_string, NULL);
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memset(&sa, 0, sizeof(sa));
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sa.sa_flags = SA_NOCLDSTOP;
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sa.sa_handler = sig_term;
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sigaction(SIGTERM, &sa, NULL);
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sigaction(SIGINT, &sa, NULL);
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while (!__io_canceled && !__io_terminated) {
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if (dbus_connection_read_write_dispatch(conn, 500) != TRUE)
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break;
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}
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if (!__io_terminated)
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unregister_auth(conn, auth_path);
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dbus_connection_unref(conn);
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return 0;
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}
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