diff options
Diffstat (limited to 'daemon/passkey-agent.c')
| -rw-r--r-- | daemon/passkey-agent.c | 441 |
1 files changed, 441 insertions, 0 deletions
diff --git a/daemon/passkey-agent.c b/daemon/passkey-agent.c new file mode 100644 index 00000000..9f42d822 --- /dev/null +++ b/daemon/passkey-agent.c @@ -0,0 +1,441 @@ +/* + * + * 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 char *passkey = NULL; +static char *address = NULL; + +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, "Passkey service has been terminated\n"); + __io_terminated = 1; + } + + return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; +} + +static DBusHandlerResult request_message(DBusConnection *conn, + DBusMessage *msg, void *data) +{ + DBusMessage *reply; + const char *path, *address; + dbus_bool_t numeric; + + if (!passkey) + return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; + + if (!dbus_message_get_args(msg, NULL, + DBUS_TYPE_STRING, &path, DBUS_TYPE_STRING, &address, + DBUS_TYPE_BOOLEAN, &numeric, DBUS_TYPE_INVALID)) { + fprintf(stderr, "Invalid arguments for passkey Request method"); + return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; + } + + reply = dbus_message_new_method_return(msg); + if (!reply) { + fprintf(stderr, "Can't create reply message\n"); + return DBUS_HANDLER_RESULT_NEED_MEMORY; + } + + printf("Passkey request for device %s\n", address); + + dbus_message_append_args(reply, DBUS_TYPE_STRING, &passkey, + DBUS_TYPE_INVALID); + + dbus_connection_send(conn, reply, NULL); + + dbus_connection_flush(conn); + + dbus_message_unref(reply); + + return DBUS_HANDLER_RESULT_HANDLED; +} + +static DBusHandlerResult confirm_message(DBusConnection *conn, + DBusMessage *msg, void *data) +{ + DBusMessage *reply; + const char *path, *address, *value; + + if (!passkey) + return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; + + if (!dbus_message_get_args(msg, NULL, + DBUS_TYPE_STRING, &path, DBUS_TYPE_STRING, &address, + DBUS_TYPE_STRING, &value, DBUS_TYPE_INVALID)) { + fprintf(stderr, "Invalid arguments for passkey Confirm method"); + return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; + } + + printf("Confirm 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 *path, *address; + + if (!dbus_message_get_args(msg, NULL, + DBUS_TYPE_STRING, &path, DBUS_TYPE_STRING, &address, + 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 passkey Release method"); + return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; + } + + if (!__io_canceled) + fprintf(stderr, "Passkey service 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 agent_message(DBusConnection *conn, + DBusMessage *msg, void *data) +{ + if (dbus_message_is_method_call(msg, "org.bluez.PasskeyAgent", "Request")) + return request_message(conn, msg, data); + + if (dbus_message_is_method_call(msg, "org.bluez.PasskeyAgent", "Confirm")) + return confirm_message(conn, msg, data); + + if (dbus_message_is_method_call(msg, "org.bluez.PasskeyAgent", "Cancel")) + return cancel_message(conn, msg, data); + + if (dbus_message_is_method_call(msg, "org.bluez.PasskeyAgent", "Release")) + return release_message(conn, msg, data); + + return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; +} + +static const DBusObjectPathVTable agent_table = { + .message_function = agent_message, +}; + +static int register_agent(DBusConnection *conn, const char *agent_path, + const char *remote_address, int use_default) +{ + DBusMessage *msg, *reply; + DBusError err; + const char *path, *method, *address = remote_address; + + if (!dbus_connection_register_object_path(conn, agent_path, + &agent_table, NULL)) { + fprintf(stderr, "Can't register object path for agent\n"); + return -1; + } + + if (use_default) { + path = "/org/bluez"; + method = "RegisterDefaultPasskeyAgent"; + } else { + path = "/org/bluez/hci0"; + method = "RegisterPasskeyAgent"; + } + + msg = dbus_message_new_method_call("org.bluez", path, INTERFACE, method); + if (!msg) { + fprintf(stderr, "Can't allocate new method call\n"); + return -1; + } + + if (use_default) + dbus_message_append_args(msg, DBUS_TYPE_STRING, &agent_path, + DBUS_TYPE_INVALID); + else + dbus_message_append_args(msg, DBUS_TYPE_STRING, &agent_path, + DBUS_TYPE_STRING, &address, 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 passkey 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_agent(DBusConnection *conn, const char *agent_path, + const char *remote_address, int use_default) +{ + DBusMessage *msg, *reply; + DBusError err; + const char *path, *method, *address = remote_address; + + if (use_default) { + path = "/org/bluez"; + method = "UnregisterDefaultPasskeyAgent"; + } else { + path = "/org/bluez/hci0"; + method = "UnregisterPasskeyAgent"; + } + + msg = dbus_message_new_method_call("org.bluez", path, INTERFACE, method); + if (!msg) { + fprintf(stderr, "Can't allocate new method call\n"); + dbus_connection_unref(conn); + exit(1); + } + + if (use_default) + dbus_message_append_args(msg, DBUS_TYPE_STRING, &agent_path, + DBUS_TYPE_INVALID); + else + dbus_message_append_args(msg, DBUS_TYPE_STRING, &agent_path, + DBUS_TYPE_STRING, &address, 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 passkey 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, agent_path); + + return 0; +} + +static void usage(void) +{ + printf("Bluetooth passkey agent ver %s\n\n", VERSION); + + printf("Usage:\n" + "\tpasskey-agent [--default] [--path agent-path] <passkey> [address]\n" + "\n"); +} + +static struct option main_options[] = { + { "default", 0, 0, 'd' }, + { "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], *agent_path = NULL; + int opt, use_default = 0; + + snprintf(default_path, sizeof(default_path), + "/org/bluez/passkey_agent_%d", getpid()); + + while ((opt = getopt_long(argc, argv, "+dp:h", main_options, NULL)) != EOF) { + switch(opt) { + case 'd': + use_default = 1; + break; + case 'p': + if (optarg[0] != '/') { + fprintf(stderr, "Invalid path\n"); + exit(1); + } + agent_path = strdup(optarg); + break; + case 'h': + usage(); + exit(0); + default: + exit(1); + } + } + + argc -= optind; + argv += optind; + optind = 0; + + if (argc < 1) { + usage(); + exit(1); + } + + passkey = strdup(argv[0]); + address = (argc > 1) ? strdup(argv[1]) : NULL; + + if (!use_default && !address) { + usage(); + exit(1); + } + + if (!agent_path) + agent_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_agent(conn, agent_path, address, use_default) < 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_agent(conn, agent_path, address, use_default); + + if (passkey) + free(passkey); + + dbus_connection_unref(conn); + + return 0; +} |