1 /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
2 /* bus.c message bus context object
4 * Copyright (C) 2003, 2004 Red Hat, Inc.
6 * Licensed under the Academic Free License version 2.1
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25 #include "activation.h"
26 #include "connection.h"
30 #include "config-parser.h"
33 #include "dir-watch.h"
34 #include <dbus/dbus-list.h>
35 #include <dbus/dbus-hash.h>
36 #include <dbus/dbus-internals.h>
50 BusConnections *connections;
51 BusActivation *activation;
52 BusRegistry *registry;
54 BusMatchmaker *matchmaker;
56 unsigned int fork : 1;
57 unsigned int syslog : 1;
58 unsigned int keep_umask : 1;
61 static dbus_int32_t server_data_slot = -1;
68 #define BUS_SERVER_DATA(server) (dbus_server_get_data ((server), server_data_slot))
71 server_get_context (DBusServer *server)
76 if (!dbus_server_allocate_data_slot (&server_data_slot))
79 bd = BUS_SERVER_DATA (server);
82 dbus_server_free_data_slot (&server_data_slot);
86 context = bd->context;
88 dbus_server_free_data_slot (&server_data_slot);
94 server_watch_callback (DBusWatch *watch,
95 unsigned int condition,
98 /* FIXME this can be done in dbus-mainloop.c
99 * if the code in activation.c for the babysitter
100 * watch handler is fixed.
103 return dbus_watch_handle (watch, condition);
107 add_server_watch (DBusWatch *watch,
110 DBusServer *server = data;
113 context = server_get_context (server);
115 return _dbus_loop_add_watch (context->loop,
116 watch, server_watch_callback, server,
121 remove_server_watch (DBusWatch *watch,
124 DBusServer *server = data;
127 context = server_get_context (server);
129 _dbus_loop_remove_watch (context->loop,
130 watch, server_watch_callback, server);
135 server_timeout_callback (DBusTimeout *timeout,
138 /* can return FALSE on OOM but we just let it fire again later */
139 dbus_timeout_handle (timeout);
143 add_server_timeout (DBusTimeout *timeout,
146 DBusServer *server = data;
149 context = server_get_context (server);
151 return _dbus_loop_add_timeout (context->loop,
152 timeout, server_timeout_callback, server, NULL);
156 remove_server_timeout (DBusTimeout *timeout,
159 DBusServer *server = data;
162 context = server_get_context (server);
164 _dbus_loop_remove_timeout (context->loop,
165 timeout, server_timeout_callback, server);
169 new_connection_callback (DBusServer *server,
170 DBusConnection *new_connection,
173 BusContext *context = data;
175 if (!bus_connections_setup_connection (context->connections, new_connection))
177 _dbus_verbose ("No memory to setup new connection\n");
179 /* if we don't do this, it will get unref'd without
180 * being disconnected... kind of strange really
181 * that we have to do this, people won't get it right
184 dbus_connection_close (new_connection);
187 dbus_connection_set_max_received_size (new_connection,
188 context->limits.max_incoming_bytes);
190 dbus_connection_set_max_message_size (new_connection,
191 context->limits.max_message_size);
193 /* on OOM, we won't have ref'd the connection so it will die. */
197 free_server_data (void *data)
199 BusServerData *bd = data;
205 setup_server (BusContext *context,
207 char **auth_mechanisms,
212 bd = dbus_new0 (BusServerData, 1);
213 if (bd == NULL || !dbus_server_set_data (server,
215 bd, free_server_data))
222 bd->context = context;
224 if (!dbus_server_set_auth_mechanisms (server, (const char**) auth_mechanisms))
230 dbus_server_set_new_connection_function (server,
231 new_connection_callback,
234 if (!dbus_server_set_watch_functions (server,
245 if (!dbus_server_set_timeout_functions (server,
247 remove_server_timeout,
258 /* This code only gets executed the first time the
259 * config files are parsed. It is not executed
260 * when config files are reloaded.
263 process_config_first_time_only (BusContext *context,
264 BusConfigParser *parser,
268 DBusList **addresses;
269 const char *user, *pidfile;
270 char **auth_mechanisms;
271 DBusList **auth_mechanisms_list;
275 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
278 auth_mechanisms = NULL;
280 /* Check for an existing pid file. Of course this is a race;
281 * we'd have to use fcntl() locks on the pid file to
282 * avoid that. But we want to check for the pid file
283 * before overwriting any existing sockets, etc.
285 pidfile = bus_config_parser_get_pidfile (parser);
291 _dbus_string_init_const (&u, pidfile);
293 if (_dbus_stat (&u, &stbuf, NULL))
295 dbus_set_error (error, DBUS_ERROR_FAILED,
296 "The pid file \"%s\" exists, if the message bus is not running, remove this file",
302 /* keep around the pid filename so we can delete it later */
303 context->pidfile = _dbus_strdup (pidfile);
305 /* Build an array of auth mechanisms */
307 auth_mechanisms_list = bus_config_parser_get_mechanisms (parser);
308 len = _dbus_list_get_length (auth_mechanisms_list);
314 auth_mechanisms = dbus_new0 (char*, len + 1);
315 if (auth_mechanisms == NULL)
322 link = _dbus_list_get_first_link (auth_mechanisms_list);
325 auth_mechanisms[i] = _dbus_strdup (link->data);
326 if (auth_mechanisms[i] == NULL)
331 link = _dbus_list_get_next_link (auth_mechanisms_list, link);
336 auth_mechanisms = NULL;
339 /* Listen on our addresses */
341 addresses = bus_config_parser_get_addresses (parser);
343 link = _dbus_list_get_first_link (addresses);
348 server = dbus_server_listen (link->data, error);
351 _DBUS_ASSERT_ERROR_IS_SET (error);
354 else if (!setup_server (context, server, auth_mechanisms, error))
356 _DBUS_ASSERT_ERROR_IS_SET (error);
360 if (!_dbus_list_append (&context->servers, server))
366 link = _dbus_list_get_next_link (addresses, link);
369 /* note that type may be NULL */
370 context->type = _dbus_strdup (bus_config_parser_get_type (parser));
371 if (bus_config_parser_get_type (parser) != NULL && context->type == NULL)
377 user = bus_config_parser_get_user (parser);
380 context->user = _dbus_strdup (user);
381 if (context->user == NULL)
388 context->fork = bus_config_parser_get_fork (parser);
389 context->syslog = bus_config_parser_get_syslog (parser);
390 context->keep_umask = bus_config_parser_get_keep_umask (parser);
392 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
396 dbus_free_string_array (auth_mechanisms);
400 /* This code gets executed every time the config files
401 * are parsed: both during BusContext construction
402 * and on reloads. This function is slightly screwy
403 * since it can do a "half reload" in out-of-memory
404 * situations. Realistically, unlikely to ever matter.
407 process_config_every_time (BusContext *context,
408 BusConfigParser *parser,
409 dbus_bool_t is_reload,
412 DBusString full_address;
415 BusActivation *new_activation;
417 const char *servicehelper;
422 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
427 if (!_dbus_string_init (&full_address))
433 /* get our limits and timeout lengths */
434 bus_config_parser_get_limits (parser, &context->limits);
436 context->policy = bus_config_parser_steal_policy (parser);
437 _dbus_assert (context->policy != NULL);
439 /* We have to build the address backward, so that
440 * <listen> later in the config file have priority
442 link = _dbus_list_get_last_link (&context->servers);
445 addr = dbus_server_get_address (link->data);
452 if (_dbus_string_get_length (&full_address) > 0)
454 if (!_dbus_string_append (&full_address, ";"))
461 if (!_dbus_string_append (&full_address, addr))
470 link = _dbus_list_get_prev_link (&context->servers, link);
474 dbus_free (context->address);
476 if (!_dbus_string_copy_data (&full_address, &context->address))
482 /* get the service directories */
483 dirs = bus_config_parser_get_service_dirs (parser);
485 /* and the service helper */
486 servicehelper = bus_config_parser_get_servicehelper (parser);
488 s = _dbus_strdup(servicehelper);
489 if (s == NULL && servicehelper != NULL)
496 dbus_free(context->servicehelper);
497 context->servicehelper = s;
500 /* Create activation subsystem */
501 new_activation = bus_activation_new (context, &full_address,
503 if (new_activation == NULL)
505 _DBUS_ASSERT_ERROR_IS_SET (error);
510 bus_activation_unref (context->activation);
512 context->activation = new_activation;
514 /* Drop existing conf-dir watches (if applicable) */
517 bus_drop_all_directory_watches ();
519 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
523 _dbus_string_free (&full_address);
532 process_config_postinit (BusContext *context,
533 BusConfigParser *parser,
536 DBusHashTable *service_context_table;
538 service_context_table = bus_config_parser_steal_service_context_table (parser);
539 if (!bus_registry_set_service_context_table (context->registry,
540 service_context_table))
546 _dbus_hash_table_unref (service_context_table);
548 /* Watch all conf directories */
549 _dbus_list_foreach (bus_config_parser_get_conf_dirs (parser),
550 (DBusForeachFunction) bus_watch_directory,
557 bus_context_new (const DBusString *config_file,
558 ForceForkSetting force_fork,
559 DBusPipe *print_addr_pipe,
560 DBusPipe *print_pid_pipe,
564 BusConfigParser *parser;
566 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
571 if (!dbus_server_allocate_data_slot (&server_data_slot))
577 context = dbus_new0 (BusContext, 1);
583 context->refcount = 1;
585 _dbus_generate_uuid (&context->uuid);
587 if (!_dbus_string_copy_data (config_file, &context->config_file))
593 context->loop = _dbus_loop_new ();
594 if (context->loop == NULL)
600 context->registry = bus_registry_new (context);
601 if (context->registry == NULL)
607 parser = bus_config_load (config_file, TRUE, NULL, error);
610 _DBUS_ASSERT_ERROR_IS_SET (error);
614 if (!process_config_first_time_only (context, parser, error))
616 _DBUS_ASSERT_ERROR_IS_SET (error);
619 if (!process_config_every_time (context, parser, FALSE, error))
621 _DBUS_ASSERT_ERROR_IS_SET (error);
625 /* we need another ref of the server data slot for the context
628 if (!dbus_server_allocate_data_slot (&server_data_slot))
629 _dbus_assert_not_reached ("second ref of server data slot failed");
631 /* Note that we don't know whether the print_addr_pipe is
632 * one of the sockets we're using to listen on, or some
633 * other random thing. But I think the answer is "don't do
636 if (print_addr_pipe != NULL && _dbus_pipe_is_valid (print_addr_pipe))
639 const char *a = bus_context_get_address (context);
642 _dbus_assert (a != NULL);
643 if (!_dbus_string_init (&addr))
649 if (!_dbus_string_append (&addr, a) ||
650 !_dbus_string_append (&addr, "\n"))
652 _dbus_string_free (&addr);
657 bytes = _dbus_string_get_length (&addr);
658 if (_dbus_pipe_write (print_addr_pipe, &addr, 0, bytes, error) != bytes)
660 /* pipe write returns an error on failure but not short write */
661 if (error != NULL && !dbus_error_is_set (error))
663 dbus_set_error (error, DBUS_ERROR_FAILED,
664 "Printing message bus address: did not write all bytes\n");
666 _dbus_string_free (&addr);
670 if (!_dbus_pipe_is_stdout_or_stderr (print_addr_pipe))
671 _dbus_pipe_close (print_addr_pipe, NULL);
673 _dbus_string_free (&addr);
676 context->connections = bus_connections_new (context);
677 if (context->connections == NULL)
683 context->matchmaker = bus_matchmaker_new ();
684 if (context->matchmaker == NULL)
690 /* check user before we fork */
691 if (context->user != NULL)
693 if (!_dbus_verify_daemon_user (context->user))
695 dbus_set_error (error, DBUS_ERROR_FAILED,
696 "Could not get UID and GID for username \"%s\"",
702 /* Now become a daemon if appropriate and write out pid file in any case */
706 if (context->pidfile)
707 _dbus_string_init_const (&u, context->pidfile);
709 if ((force_fork != FORK_NEVER && context->fork) || force_fork == FORK_ALWAYS)
711 _dbus_verbose ("Forking and becoming daemon\n");
713 if (!_dbus_become_daemon (context->pidfile ? &u : NULL,
716 context->keep_umask))
718 _DBUS_ASSERT_ERROR_IS_SET (error);
724 _dbus_verbose ("Fork not requested\n");
726 /* Need to write PID file and to PID pipe for ourselves,
727 * not for the child process. This is a no-op if the pidfile
728 * is NULL and print_pid_pipe is NULL.
730 if (!_dbus_write_pid_to_file_and_pipe (context->pidfile ? &u : NULL,
735 _DBUS_ASSERT_ERROR_IS_SET (error);
741 if (print_pid_pipe && _dbus_pipe_is_valid (print_pid_pipe) &&
742 !_dbus_pipe_is_stdout_or_stderr (print_pid_pipe))
743 _dbus_pipe_close (print_pid_pipe, NULL);
745 if (!bus_selinux_full_init ())
747 _dbus_warn ("SELinux initialization failed\n");
750 if (!process_config_postinit (context, parser, error))
752 _DBUS_ASSERT_ERROR_IS_SET (error);
758 bus_config_parser_unref (parser);
762 /* Here we change our credentials if required,
763 * as soon as we've set up our sockets and pidfile
765 if (context->user != NULL)
767 if (!_dbus_change_to_daemon_user (context->user, error))
769 _DBUS_ASSERT_ERROR_IS_SET (error);
774 /* FIXME - why not just put this in full_init() below? */
775 bus_selinux_audit_init ();
779 dbus_server_free_data_slot (&server_data_slot);
785 bus_config_parser_unref (parser);
787 bus_context_unref (context);
789 if (server_data_slot >= 0)
790 dbus_server_free_data_slot (&server_data_slot);
796 bus_context_get_id (BusContext *context,
799 return _dbus_uuid_encode (&context->uuid, uuid);
803 bus_context_reload_config (BusContext *context,
806 BusConfigParser *parser;
807 DBusString config_file;
810 /* Flush the user database cache */
811 _dbus_flush_caches ();
814 _dbus_string_init_const (&config_file, context->config_file);
815 parser = bus_config_load (&config_file, TRUE, NULL, error);
818 _DBUS_ASSERT_ERROR_IS_SET (error);
822 if (!process_config_every_time (context, parser, TRUE, error))
824 _DBUS_ASSERT_ERROR_IS_SET (error);
827 if (!process_config_postinit (context, parser, error))
829 _DBUS_ASSERT_ERROR_IS_SET (error);
834 bus_context_log_info (context, "Reloaded configuration");
837 bus_context_log_info (context, "Unable to reload configuration: %s", error->message);
839 bus_config_parser_unref (parser);
844 shutdown_server (BusContext *context,
847 if (server == NULL ||
848 !dbus_server_get_is_connected (server))
851 if (!dbus_server_set_watch_functions (server,
855 _dbus_assert_not_reached ("setting watch functions to NULL failed");
857 if (!dbus_server_set_timeout_functions (server,
861 _dbus_assert_not_reached ("setting timeout functions to NULL failed");
863 dbus_server_disconnect (server);
867 bus_context_shutdown (BusContext *context)
871 link = _dbus_list_get_first_link (&context->servers);
874 shutdown_server (context, link->data);
876 link = _dbus_list_get_next_link (&context->servers, link);
881 bus_context_ref (BusContext *context)
883 _dbus_assert (context->refcount > 0);
884 context->refcount += 1;
890 bus_context_unref (BusContext *context)
892 _dbus_assert (context->refcount > 0);
893 context->refcount -= 1;
895 if (context->refcount == 0)
899 _dbus_verbose ("Finalizing bus context %p\n", context);
901 bus_context_shutdown (context);
903 if (context->connections)
905 bus_connections_unref (context->connections);
906 context->connections = NULL;
909 if (context->registry)
911 bus_registry_unref (context->registry);
912 context->registry = NULL;
915 if (context->activation)
917 bus_activation_unref (context->activation);
918 context->activation = NULL;
921 link = _dbus_list_get_first_link (&context->servers);
924 dbus_server_unref (link->data);
926 link = _dbus_list_get_next_link (&context->servers, link);
928 _dbus_list_clear (&context->servers);
932 bus_policy_unref (context->policy);
933 context->policy = NULL;
938 _dbus_loop_unref (context->loop);
939 context->loop = NULL;
942 if (context->matchmaker)
944 bus_matchmaker_unref (context->matchmaker);
945 context->matchmaker = NULL;
948 dbus_free (context->config_file);
949 dbus_free (context->type);
950 dbus_free (context->address);
951 dbus_free (context->user);
952 dbus_free (context->servicehelper);
954 if (context->pidfile)
957 _dbus_string_init_const (&u, context->pidfile);
959 /* Deliberately ignore errors here, since there's not much
960 * we can do about it, and we're exiting anyways.
962 _dbus_delete_file (&u, NULL);
964 dbus_free (context->pidfile);
968 dbus_server_free_data_slot (&server_data_slot);
972 /* type may be NULL */
974 bus_context_get_type (BusContext *context)
976 return context->type;
980 bus_context_get_address (BusContext *context)
982 return context->address;
986 bus_context_get_servicehelper (BusContext *context)
988 return context->servicehelper;
992 bus_context_get_registry (BusContext *context)
994 return context->registry;
998 bus_context_get_connections (BusContext *context)
1000 return context->connections;
1004 bus_context_get_activation (BusContext *context)
1006 return context->activation;
1010 bus_context_get_matchmaker (BusContext *context)
1012 return context->matchmaker;
1016 bus_context_get_loop (BusContext *context)
1018 return context->loop;
1022 bus_context_allow_unix_user (BusContext *context,
1025 return bus_policy_allow_unix_user (context->policy,
1029 /* For now this is never actually called because the default
1030 * DBusConnection behavior of 'same user that owns the bus can connect'
1031 * is all it would do.
1034 bus_context_allow_windows_user (BusContext *context,
1035 const char *windows_sid)
1037 return bus_policy_allow_windows_user (context->policy,
1042 bus_context_get_policy (BusContext *context)
1044 return context->policy;
1048 bus_context_create_client_policy (BusContext *context,
1049 DBusConnection *connection,
1052 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1053 return bus_policy_create_client_policy (context->policy, connection,
1058 bus_context_get_activation_timeout (BusContext *context)
1061 return context->limits.activation_timeout;
1065 bus_context_get_auth_timeout (BusContext *context)
1067 return context->limits.auth_timeout;
1071 bus_context_get_max_completed_connections (BusContext *context)
1073 return context->limits.max_completed_connections;
1077 bus_context_get_max_incomplete_connections (BusContext *context)
1079 return context->limits.max_incomplete_connections;
1083 bus_context_get_max_connections_per_user (BusContext *context)
1085 return context->limits.max_connections_per_user;
1089 bus_context_get_max_pending_activations (BusContext *context)
1091 return context->limits.max_pending_activations;
1095 bus_context_get_max_services_per_connection (BusContext *context)
1097 return context->limits.max_services_per_connection;
1101 bus_context_get_max_match_rules_per_connection (BusContext *context)
1103 return context->limits.max_match_rules_per_connection;
1107 bus_context_get_max_replies_per_connection (BusContext *context)
1109 return context->limits.max_replies_per_connection;
1113 bus_context_get_reply_timeout (BusContext *context)
1115 return context->limits.reply_timeout;
1119 bus_context_log_info (BusContext *context, const char *msg, ...)
1123 va_start (args, msg);
1125 if (context->syslog)
1126 _dbus_log_info (msg, args);
1132 bus_context_log_security (BusContext *context, const char *msg, ...)
1136 va_start (args, msg);
1138 if (context->syslog)
1139 _dbus_log_security (msg, args);
1145 * addressed_recipient is the recipient specified in the message.
1147 * proposed_recipient is the recipient we're considering sending
1148 * to right this second, and may be an eavesdropper.
1150 * sender is the sender of the message.
1152 * NULL for proposed_recipient or sender definitely means the bus driver.
1154 * NULL for addressed_recipient may mean the bus driver, or may mean
1155 * no destination was specified in the message (e.g. a signal).
1158 bus_context_check_security_policy (BusContext *context,
1159 BusTransaction *transaction,
1160 DBusConnection *sender,
1161 DBusConnection *addressed_recipient,
1162 DBusConnection *proposed_recipient,
1163 DBusMessage *message,
1167 BusClientPolicy *sender_policy;
1168 BusClientPolicy *recipient_policy;
1169 dbus_int32_t toggles;
1172 dbus_bool_t requested_reply;
1173 const char *sender_name;
1174 const char *sender_loginfo;
1175 const char *proposed_recipient_loginfo;
1177 type = dbus_message_get_type (message);
1178 dest = dbus_message_get_destination (message);
1180 /* dispatch.c was supposed to ensure these invariants */
1181 _dbus_assert (dest != NULL ||
1182 type == DBUS_MESSAGE_TYPE_SIGNAL ||
1183 (sender == NULL && !bus_connection_is_active (proposed_recipient)));
1184 _dbus_assert (type == DBUS_MESSAGE_TYPE_SIGNAL ||
1185 addressed_recipient != NULL ||
1186 strcmp (dest, DBUS_SERVICE_DBUS) == 0);
1188 /* Used in logging below */
1191 sender_name = bus_connection_get_name (sender);
1192 sender_loginfo = bus_connection_get_loginfo (sender);
1197 sender_loginfo = "(bus)";
1200 if (proposed_recipient != NULL)
1201 proposed_recipient_loginfo = bus_connection_get_loginfo (proposed_recipient);
1203 proposed_recipient_loginfo = "bus";
1207 case DBUS_MESSAGE_TYPE_METHOD_CALL:
1208 case DBUS_MESSAGE_TYPE_SIGNAL:
1209 case DBUS_MESSAGE_TYPE_METHOD_RETURN:
1210 case DBUS_MESSAGE_TYPE_ERROR:
1214 _dbus_verbose ("security check disallowing message of unknown type %d\n",
1217 dbus_set_error (error, DBUS_ERROR_ACCESS_DENIED,
1218 "Message bus will not accept messages of unknown type\n");
1223 requested_reply = FALSE;
1227 /* First verify the SELinux access controls. If allowed then
1228 * go on with the standard checks.
1230 if (!bus_selinux_allows_send (sender, proposed_recipient,
1231 dbus_message_type_to_string (dbus_message_get_type (message)),
1232 dbus_message_get_interface (message),
1233 dbus_message_get_member (message),
1234 dbus_message_get_error_name (message),
1235 dest ? dest : DBUS_SERVICE_DBUS, error))
1237 if (error != NULL && !dbus_error_is_set (error))
1239 dbus_set_error (error, DBUS_ERROR_ACCESS_DENIED,
1240 "An SELinux policy prevents this sender "
1241 "from sending this message to this recipient "
1242 "(rejected message had sender \"%s\" interface \"%s\" "
1243 "member \"%s\" error name \"%s\" destination \"%s\")",
1244 sender_name ? sender_name : "(unset)",
1245 dbus_message_get_interface (message) ?
1246 dbus_message_get_interface (message) : "(unset)",
1247 dbus_message_get_member (message) ?
1248 dbus_message_get_member (message) : "(unset)",
1249 dbus_message_get_error_name (message) ?
1250 dbus_message_get_error_name (message) : "(unset)",
1251 dest ? dest : DBUS_SERVICE_DBUS);
1252 _dbus_verbose ("SELinux security check denying send to service\n");
1258 if (bus_connection_is_active (sender))
1260 sender_policy = bus_connection_get_policy (sender);
1261 _dbus_assert (sender_policy != NULL);
1263 /* Fill in requested_reply variable with TRUE if this is a
1264 * reply and the reply was pending.
1266 if (dbus_message_get_reply_serial (message) != 0)
1268 if (proposed_recipient != NULL /* not to the bus driver */ &&
1269 addressed_recipient == proposed_recipient /* not eavesdropping */)
1273 dbus_error_init (&error2);
1274 requested_reply = bus_connections_check_reply (bus_connection_get_connections (sender),
1276 sender, addressed_recipient, message,
1278 if (dbus_error_is_set (&error2))
1280 dbus_move_error (&error2, error);
1288 /* Policy for inactive connections is that they can only send
1289 * the hello message to the bus driver
1291 if (proposed_recipient == NULL &&
1292 dbus_message_is_method_call (message,
1293 DBUS_INTERFACE_DBUS,
1296 _dbus_verbose ("security check allowing %s message\n",
1302 _dbus_verbose ("security check disallowing non-%s message\n",
1305 dbus_set_error (error, DBUS_ERROR_ACCESS_DENIED,
1306 "Client tried to send a message other than %s without being registered",
1315 sender_policy = NULL;
1317 /* If the sender is the bus driver, we assume any reply was a
1318 * requested reply as bus driver won't send bogus ones
1320 if (addressed_recipient == proposed_recipient /* not eavesdropping */ &&
1321 dbus_message_get_reply_serial (message) != 0)
1322 requested_reply = TRUE;
1325 _dbus_assert ((sender != NULL && sender_policy != NULL) ||
1326 (sender == NULL && sender_policy == NULL));
1328 if (proposed_recipient != NULL)
1330 /* only the bus driver can send to an inactive recipient (as it
1331 * owns no services, so other apps can't address it). Inactive
1332 * recipients can receive any message.
1334 if (bus_connection_is_active (proposed_recipient))
1336 recipient_policy = bus_connection_get_policy (proposed_recipient);
1337 _dbus_assert (recipient_policy != NULL);
1339 else if (sender == NULL)
1341 _dbus_verbose ("security check using NULL recipient policy for message from bus\n");
1342 recipient_policy = NULL;
1346 _dbus_assert_not_reached ("a message was somehow sent to an inactive recipient from a source other than the message bus\n");
1347 recipient_policy = NULL;
1351 recipient_policy = NULL;
1353 _dbus_assert ((proposed_recipient != NULL && recipient_policy != NULL) ||
1354 (proposed_recipient != NULL && sender == NULL && recipient_policy == NULL) ||
1355 (proposed_recipient == NULL && recipient_policy == NULL));
1358 if (sender_policy &&
1359 !bus_client_policy_check_can_send (sender_policy,
1363 message, &toggles, &log))
1365 const char *msg = "Rejected send message, %d matched rules; "
1366 "type=\"%s\", sender=\"%s\" (%s) interface=\"%s\" member=\"%s\" error name=\"%s\" requested_reply=%d destination=\"%s\" (%s))";
1368 dbus_set_error (error, DBUS_ERROR_ACCESS_DENIED, msg,
1370 dbus_message_type_to_string (dbus_message_get_type (message)),
1371 sender_name ? sender_name : "(unset)",
1373 dbus_message_get_interface (message) ?
1374 dbus_message_get_interface (message) : "(unset)",
1375 dbus_message_get_member (message) ?
1376 dbus_message_get_member (message) : "(unset)",
1377 dbus_message_get_error_name (message) ?
1378 dbus_message_get_error_name (message) : "(unset)",
1380 dest ? dest : DBUS_SERVICE_DBUS,
1381 proposed_recipient_loginfo);
1382 /* Needs to be duplicated to avoid calling malloc and having to handle OOM */
1383 if (addressed_recipient == proposed_recipient)
1384 bus_context_log_security (context, msg,
1386 dbus_message_type_to_string (dbus_message_get_type (message)),
1387 sender_name ? sender_name : "(unset)",
1389 dbus_message_get_interface (message) ?
1390 dbus_message_get_interface (message) : "(unset)",
1391 dbus_message_get_member (message) ?
1392 dbus_message_get_member (message) : "(unset)",
1393 dbus_message_get_error_name (message) ?
1394 dbus_message_get_error_name (message) : "(unset)",
1396 dest ? dest : DBUS_SERVICE_DBUS,
1397 proposed_recipient_loginfo);
1398 _dbus_verbose ("security policy disallowing message due to sender policy\n");
1403 bus_context_log_security (context,
1404 "Would reject message, %d matched rules; "
1405 "type=\"%s\", sender=\"%s\" (%s) interface=\"%s\" member=\"%s\" error name=\"%s\" requested_reply=%d destination=\"%s\" (%s))",
1407 dbus_message_type_to_string (dbus_message_get_type (message)),
1408 sender_name ? sender_name : "(unset)",
1410 dbus_message_get_interface (message) ?
1411 dbus_message_get_interface (message) : "(unset)",
1412 dbus_message_get_member (message) ?
1413 dbus_message_get_member (message) : "(unset)",
1414 dbus_message_get_error_name (message) ?
1415 dbus_message_get_error_name (message) : "(unset)",
1417 dest ? dest : DBUS_SERVICE_DBUS,
1418 proposed_recipient_loginfo);
1420 if (recipient_policy &&
1421 !bus_client_policy_check_can_receive (recipient_policy,
1425 addressed_recipient, proposed_recipient,
1428 const char *msg = "Rejected receive message, %d matched rules; "
1429 "type=\"%s\" sender=\"%s\" (%s) interface=\"%s\" member=\"%s\" error name=\"%s\" reply serial=%u requested_reply=%d destination=\"%s\" (%s))";
1431 dbus_set_error (error, DBUS_ERROR_ACCESS_DENIED, msg,
1433 dbus_message_type_to_string (dbus_message_get_type (message)),
1434 sender_name ? sender_name : "(unset)",
1436 dbus_message_get_interface (message) ?
1437 dbus_message_get_interface (message) : "(unset)",
1438 dbus_message_get_member (message) ?
1439 dbus_message_get_member (message) : "(unset)",
1440 dbus_message_get_error_name (message) ?
1441 dbus_message_get_error_name (message) : "(unset)",
1442 dbus_message_get_reply_serial (message),
1444 dest ? dest : DBUS_SERVICE_DBUS,
1445 proposed_recipient_loginfo);
1446 /* Needs to be duplicated to avoid calling malloc and having to handle OOM */
1447 if (addressed_recipient == proposed_recipient)
1448 bus_context_log_security (context, msg,
1450 dbus_message_type_to_string (dbus_message_get_type (message)),
1451 sender_name ? sender_name : "(unset)",
1453 dbus_message_get_interface (message) ?
1454 dbus_message_get_interface (message) : "(unset)",
1455 dbus_message_get_member (message) ?
1456 dbus_message_get_member (message) : "(unset)",
1457 dbus_message_get_error_name (message) ?
1458 dbus_message_get_error_name (message) : "(unset)",
1459 dbus_message_get_reply_serial (message),
1461 dest ? dest : DBUS_SERVICE_DBUS,
1462 proposed_recipient_loginfo);
1463 _dbus_verbose ("security policy disallowing message due to recipient policy\n");
1467 /* See if limits on size have been exceeded */
1468 if (proposed_recipient &&
1469 dbus_connection_get_outgoing_size (proposed_recipient) >
1470 context->limits.max_outgoing_bytes)
1472 dbus_set_error (error, DBUS_ERROR_LIMITS_EXCEEDED,
1473 "The destination service \"%s\" has a full message queue",
1474 dest ? dest : (proposed_recipient ?
1475 bus_connection_get_name (proposed_recipient) :
1476 DBUS_SERVICE_DBUS));
1477 _dbus_verbose ("security policy disallowing message due to full message queue\n");
1481 /* Record that we will allow a reply here in the future (don't
1482 * bother if the recipient is the bus or this is an eavesdropping
1483 * connection). Only the addressed recipient may reply.
1485 if (type == DBUS_MESSAGE_TYPE_METHOD_CALL &&
1487 addressed_recipient &&
1488 addressed_recipient == proposed_recipient && /* not eavesdropping */
1489 !bus_connections_expect_reply (bus_connection_get_connections (sender),
1491 sender, addressed_recipient,
1494 _dbus_verbose ("Failed to record reply expectation or problem with the message expecting a reply\n");
1498 _dbus_verbose ("security policy allowing message\n");