1 /* -*- mode: C; c-file-style: "gnu" -*- */
2 /* bus.c message bus context object
4 * Copyright (C) 2003, 2004 Red Hat, Inc.
6 * Licensed under the Academic Free License version 2.0
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 #include "activation.h"
26 #include "connection.h"
30 #include "config-parser.h"
33 #include <dbus/dbus-list.h>
34 #include <dbus/dbus-hash.h>
35 #include <dbus/dbus-internals.h>
47 BusConnections *connections;
48 BusActivation *activation;
49 BusRegistry *registry;
51 BusMatchmaker *matchmaker;
52 DBusUserDatabase *user_database;
54 unsigned int fork : 1;
57 static dbus_int32_t server_data_slot = -1;
64 #define BUS_SERVER_DATA(server) (dbus_server_get_data ((server), server_data_slot))
67 server_get_context (DBusServer *server)
72 if (!dbus_server_allocate_data_slot (&server_data_slot))
75 bd = BUS_SERVER_DATA (server);
78 dbus_server_free_data_slot (&server_data_slot);
82 context = bd->context;
84 dbus_server_free_data_slot (&server_data_slot);
90 server_watch_callback (DBusWatch *watch,
91 unsigned int condition,
94 /* FIXME this can be done in dbus-mainloop.c
95 * if the code in activation.c for the babysitter
96 * watch handler is fixed.
99 return dbus_watch_handle (watch, condition);
103 add_server_watch (DBusWatch *watch,
106 DBusServer *server = data;
109 context = server_get_context (server);
111 return _dbus_loop_add_watch (context->loop,
112 watch, server_watch_callback, server,
117 remove_server_watch (DBusWatch *watch,
120 DBusServer *server = data;
123 context = server_get_context (server);
125 _dbus_loop_remove_watch (context->loop,
126 watch, server_watch_callback, server);
131 server_timeout_callback (DBusTimeout *timeout,
134 /* can return FALSE on OOM but we just let it fire again later */
135 dbus_timeout_handle (timeout);
139 add_server_timeout (DBusTimeout *timeout,
142 DBusServer *server = data;
145 context = server_get_context (server);
147 return _dbus_loop_add_timeout (context->loop,
148 timeout, server_timeout_callback, server, NULL);
152 remove_server_timeout (DBusTimeout *timeout,
155 DBusServer *server = data;
158 context = server_get_context (server);
160 _dbus_loop_remove_timeout (context->loop,
161 timeout, server_timeout_callback, server);
165 new_connection_callback (DBusServer *server,
166 DBusConnection *new_connection,
169 BusContext *context = data;
171 if (!bus_connections_setup_connection (context->connections, new_connection))
173 _dbus_verbose ("No memory to setup new connection\n");
175 /* if we don't do this, it will get unref'd without
176 * being disconnected... kind of strange really
177 * that we have to do this, people won't get it right
180 dbus_connection_disconnect (new_connection);
183 dbus_connection_set_max_received_size (new_connection,
184 context->limits.max_incoming_bytes);
186 dbus_connection_set_max_message_size (new_connection,
187 context->limits.max_message_size);
189 /* on OOM, we won't have ref'd the connection so it will die. */
193 free_server_data (void *data)
195 BusServerData *bd = data;
201 setup_server (BusContext *context,
203 char **auth_mechanisms,
208 bd = dbus_new0 (BusServerData, 1);
209 if (!dbus_server_set_data (server,
211 bd, free_server_data))
218 bd->context = context;
220 if (!dbus_server_set_auth_mechanisms (server, (const char**) auth_mechanisms))
226 dbus_server_set_new_connection_function (server,
227 new_connection_callback,
230 if (!dbus_server_set_watch_functions (server,
241 if (!dbus_server_set_timeout_functions (server,
243 remove_server_timeout,
254 /* This code only gets executed the first time the
255 config files are parsed. It is not executed
256 when config files are reloaded.*/
258 process_config_first_time_only (BusContext *context,
259 BusConfigParser *parser,
263 DBusList **addresses;
264 const char *user, *pidfile;
265 char **auth_mechanisms;
266 DBusList **auth_mechanisms_list;
270 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
273 auth_mechanisms = NULL;
275 /* Check for an existing pid file. Of course this is a race;
276 * we'd have to use fcntl() locks on the pid file to
277 * avoid that. But we want to check for the pid file
278 * before overwriting any existing sockets, etc.
280 pidfile = bus_config_parser_get_pidfile (parser);
287 dbus_error_init (&tmp_error);
288 _dbus_string_init_const (&u, pidfile);
290 if (_dbus_stat (&u, &stbuf, &tmp_error))
292 dbus_set_error (error, DBUS_ERROR_FAILED,
293 "The pid file \"%s\" exists, if the message bus is not running, remove this file",
295 dbus_error_free (&tmp_error);
300 /* keep around the pid filename so we can delete it later */
301 context->pidfile = _dbus_strdup (pidfile);
303 /* Build an array of auth mechanisms */
305 auth_mechanisms_list = bus_config_parser_get_mechanisms (parser);
306 len = _dbus_list_get_length (auth_mechanisms_list);
312 auth_mechanisms = dbus_new0 (char*, len + 1);
313 if (auth_mechanisms == NULL)
320 link = _dbus_list_get_first_link (auth_mechanisms_list);
323 auth_mechanisms[i] = _dbus_strdup (link->data);
324 if (auth_mechanisms[i] == NULL)
329 link = _dbus_list_get_next_link (auth_mechanisms_list, link);
334 auth_mechanisms = NULL;
337 /* Listen on our addresses */
339 addresses = bus_config_parser_get_addresses (parser);
341 link = _dbus_list_get_first_link (addresses);
346 server = dbus_server_listen (link->data, error);
349 _DBUS_ASSERT_ERROR_IS_SET (error);
352 else if (!setup_server (context, server, auth_mechanisms, error))
354 _DBUS_ASSERT_ERROR_IS_SET (error);
358 if (!_dbus_list_append (&context->servers, server))
364 link = _dbus_list_get_next_link (addresses, link);
367 /* note that type may be NULL */
368 context->type = _dbus_strdup (bus_config_parser_get_type (parser));
369 if (bus_config_parser_get_type (parser) != NULL && context->type == NULL)
375 user = bus_config_parser_get_user (parser);
378 context->user = _dbus_strdup (user);
379 if (context->user == NULL)
386 context->fork = bus_config_parser_get_fork (parser);
388 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
392 dbus_free_string_array (auth_mechanisms);
396 /* This code gets executed every time the config files
397 are parsed: both during BusContext construction
400 process_config_every_time (BusContext *context,
401 BusConfigParser *parser,
402 dbus_bool_t is_reload,
405 DBusString full_address;
407 DBusHashTable *service_sid_table;
411 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
415 if (!_dbus_string_init (&full_address))
421 /* get our limits and timeout lengths */
422 bus_config_parser_get_limits (parser, &context->limits);
424 context->policy = bus_config_parser_steal_policy (parser);
425 _dbus_assert (context->policy != NULL);
427 /* We have to build the address backward, so that
428 * <listen> later in the config file have priority
430 link = _dbus_list_get_last_link (&context->servers);
435 addr = dbus_server_get_address (link->data);
442 if (_dbus_string_get_length (&full_address) > 0)
444 if (!_dbus_string_append (&full_address, ";"))
451 if (!_dbus_string_append (&full_address, addr))
459 link = _dbus_list_get_prev_link (&context->servers, link);
463 dbus_free (context->address);
465 if (!_dbus_string_copy_data (&full_address, &context->address))
471 /* Create activation subsystem */
474 bus_activation_unref (context->activation);
476 context->activation = bus_activation_new (context, &full_address,
477 bus_config_parser_get_service_dirs (parser),
479 if (context->activation == NULL)
481 _DBUS_ASSERT_ERROR_IS_SET (error);
485 service_sid_table = bus_config_parser_steal_service_sid_table (parser);
486 bus_registry_set_service_sid_table (context->registry,
488 _dbus_hash_table_unref (service_sid_table);
490 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
494 _dbus_string_free (&full_address);
499 load_config (BusContext *context,
500 dbus_bool_t is_reload,
503 BusConfigParser *parser;
504 DBusString config_file;
507 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
512 _dbus_string_init_const (&config_file, context->config_file);
513 parser = bus_config_load (&config_file, TRUE, NULL, error);
516 _DBUS_ASSERT_ERROR_IS_SET (error);
520 if (!is_reload && !process_config_first_time_only (context, parser, error))
522 _DBUS_ASSERT_ERROR_IS_SET (error);
526 if (!process_config_every_time (context, parser, is_reload, error))
528 _DBUS_ASSERT_ERROR_IS_SET (error);
532 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
537 bus_config_parser_unref (parser);
542 bus_context_new (const DBusString *config_file,
543 dbus_bool_t force_fork,
550 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
552 if (!dbus_server_allocate_data_slot (&server_data_slot))
558 context = dbus_new0 (BusContext, 1);
564 context->refcount = 1;
566 if (!_dbus_string_copy_data (config_file, &context->config_file))
572 context->loop = _dbus_loop_new ();
573 if (context->loop == NULL)
579 context->registry = bus_registry_new (context);
580 if (context->registry == NULL)
586 if (!load_config (context, FALSE, error))
588 _DBUS_ASSERT_ERROR_IS_SET (error);
592 /* we need another ref of the server data slot for the context
595 if (!dbus_server_allocate_data_slot (&server_data_slot))
596 _dbus_assert_not_reached ("second ref of server data slot failed");
598 context->user_database = _dbus_user_database_new ();
599 if (context->user_database == NULL)
605 /* Note that we don't know whether the print_addr_fd is
606 * one of the sockets we're using to listen on, or some
607 * other random thing. But I think the answer is "don't do
610 if (print_addr_fd >= 0)
613 const char *a = bus_context_get_address (context);
616 _dbus_assert (a != NULL);
617 if (!_dbus_string_init (&addr))
623 if (!_dbus_string_append (&addr, a) ||
624 !_dbus_string_append (&addr, "\n"))
626 _dbus_string_free (&addr);
631 bytes = _dbus_string_get_length (&addr);
632 if (_dbus_write (print_addr_fd, &addr, 0, bytes) != bytes)
634 dbus_set_error (error, DBUS_ERROR_FAILED,
635 "Printing message bus address: %s\n",
636 _dbus_strerror (errno));
637 _dbus_string_free (&addr);
641 if (print_addr_fd > 2)
642 _dbus_close (print_addr_fd, NULL);
644 _dbus_string_free (&addr);
647 context->connections = bus_connections_new (context);
648 if (context->connections == NULL)
654 context->matchmaker = bus_matchmaker_new ();
655 if (context->matchmaker == NULL)
661 /* Now become a daemon if appropriate */
662 if (force_fork || context->fork)
666 if (context->pidfile)
667 _dbus_string_init_const (&u, context->pidfile);
669 if (!_dbus_become_daemon (context->pidfile ? &u : NULL, error))
671 _DBUS_ASSERT_ERROR_IS_SET (error);
677 /* Need to write PID file for ourselves, not for the child process */
678 if (context->pidfile != NULL)
682 _dbus_string_init_const (&u, context->pidfile);
684 if (!_dbus_write_pid_file (&u, _dbus_getpid (), error))
686 _DBUS_ASSERT_ERROR_IS_SET (error);
692 /* Write PID if requested */
693 if (print_pid_fd >= 0)
698 if (!_dbus_string_init (&pid))
704 if (!_dbus_string_append_int (&pid, _dbus_getpid ()) ||
705 !_dbus_string_append (&pid, "\n"))
707 _dbus_string_free (&pid);
712 bytes = _dbus_string_get_length (&pid);
713 if (_dbus_write (print_pid_fd, &pid, 0, bytes) != bytes)
715 dbus_set_error (error, DBUS_ERROR_FAILED,
716 "Printing message bus PID: %s\n",
717 _dbus_strerror (errno));
718 _dbus_string_free (&pid);
722 if (print_pid_fd > 2)
723 _dbus_close (print_pid_fd, NULL);
725 _dbus_string_free (&pid);
728 /* Here we change our credentials if required,
729 * as soon as we've set up our sockets and pidfile
731 if (context->user != NULL)
733 DBusCredentials creds;
736 _dbus_string_init_const (&u, context->user);
738 if (!_dbus_credentials_from_username (&u, &creds) ||
742 dbus_set_error (error, DBUS_ERROR_FAILED,
743 "Could not get UID and GID for username \"%s\"",
748 if (!_dbus_change_identity (creds.uid, creds.gid, error))
750 _DBUS_ASSERT_ERROR_IS_SET (error);
755 dbus_server_free_data_slot (&server_data_slot);
761 bus_context_unref (context);
763 if (server_data_slot >= 0)
764 dbus_server_free_data_slot (&server_data_slot);
770 bus_context_reload_config (BusContext *context,
773 return load_config (context,
774 TRUE, /* yes, we are re-loading */
779 shutdown_server (BusContext *context,
782 if (server == NULL ||
783 !dbus_server_get_is_connected (server))
786 if (!dbus_server_set_watch_functions (server,
790 _dbus_assert_not_reached ("setting watch functions to NULL failed");
792 if (!dbus_server_set_timeout_functions (server,
796 _dbus_assert_not_reached ("setting timeout functions to NULL failed");
798 dbus_server_disconnect (server);
802 bus_context_shutdown (BusContext *context)
806 link = _dbus_list_get_first_link (&context->servers);
809 shutdown_server (context, link->data);
811 link = _dbus_list_get_next_link (&context->servers, link);
816 bus_context_ref (BusContext *context)
818 _dbus_assert (context->refcount > 0);
819 context->refcount += 1;
825 bus_context_unref (BusContext *context)
827 _dbus_assert (context->refcount > 0);
828 context->refcount -= 1;
830 if (context->refcount == 0)
834 _dbus_verbose ("Finalizing bus context %p\n", context);
836 bus_context_shutdown (context);
838 if (context->connections)
840 bus_connections_unref (context->connections);
841 context->connections = NULL;
844 if (context->registry)
846 bus_registry_unref (context->registry);
847 context->registry = NULL;
850 if (context->activation)
852 bus_activation_unref (context->activation);
853 context->activation = NULL;
856 link = _dbus_list_get_first_link (&context->servers);
859 dbus_server_unref (link->data);
861 link = _dbus_list_get_next_link (&context->servers, link);
863 _dbus_list_clear (&context->servers);
867 bus_policy_unref (context->policy);
868 context->policy = NULL;
873 _dbus_loop_unref (context->loop);
874 context->loop = NULL;
877 if (context->matchmaker)
879 bus_matchmaker_unref (context->matchmaker);
880 context->matchmaker = NULL;
883 dbus_free (context->config_file);
884 dbus_free (context->type);
885 dbus_free (context->address);
886 dbus_free (context->user);
888 if (context->pidfile)
891 _dbus_string_init_const (&u, context->pidfile);
893 /* Deliberately ignore errors here, since there's not much
894 * we can do about it, and we're exiting anyways.
896 _dbus_delete_file (&u, NULL);
898 dbus_free (context->pidfile);
901 if (context->user_database != NULL)
902 _dbus_user_database_unref (context->user_database);
906 dbus_server_free_data_slot (&server_data_slot);
910 /* type may be NULL */
912 bus_context_get_type (BusContext *context)
914 return context->type;
918 bus_context_get_address (BusContext *context)
920 return context->address;
924 bus_context_get_registry (BusContext *context)
926 return context->registry;
930 bus_context_get_connections (BusContext *context)
932 return context->connections;
936 bus_context_get_activation (BusContext *context)
938 return context->activation;
942 bus_context_get_matchmaker (BusContext *context)
944 return context->matchmaker;
948 bus_context_get_loop (BusContext *context)
950 return context->loop;
954 bus_context_get_user_database (BusContext *context)
956 return context->user_database;
960 bus_context_allow_user (BusContext *context,
963 return bus_policy_allow_user (context->policy,
964 context->user_database,
969 bus_context_get_policy (BusContext *context)
971 return context->policy;
975 bus_context_create_client_policy (BusContext *context,
976 DBusConnection *connection,
979 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
980 return bus_policy_create_client_policy (context->policy, connection,
985 bus_context_get_activation_timeout (BusContext *context)
988 return context->limits.activation_timeout;
992 bus_context_get_auth_timeout (BusContext *context)
994 return context->limits.auth_timeout;
998 bus_context_get_max_completed_connections (BusContext *context)
1000 return context->limits.max_completed_connections;
1004 bus_context_get_max_incomplete_connections (BusContext *context)
1006 return context->limits.max_incomplete_connections;
1010 bus_context_get_max_connections_per_user (BusContext *context)
1012 return context->limits.max_connections_per_user;
1016 bus_context_get_max_pending_activations (BusContext *context)
1018 return context->limits.max_pending_activations;
1022 bus_context_get_max_services_per_connection (BusContext *context)
1024 return context->limits.max_services_per_connection;
1028 bus_context_get_max_match_rules_per_connection (BusContext *context)
1030 return context->limits.max_match_rules_per_connection;
1034 bus_context_get_max_replies_per_connection (BusContext *context)
1036 return context->limits.max_replies_per_connection;
1040 bus_context_get_reply_timeout (BusContext *context)
1042 return context->limits.reply_timeout;
1046 * addressed_recipient is the recipient specified in the message.
1048 * proposed_recipient is the recipient we're considering sending
1049 * to right this second, and may be an eavesdropper.
1051 * sender is the sender of the message.
1053 * NULL for proposed_recipient or sender definitely means the bus driver.
1055 * NULL for addressed_recipient may mean the bus driver, or may mean
1056 * no destination was specified in the message (e.g. a signal).
1059 bus_context_check_security_policy (BusContext *context,
1060 BusTransaction *transaction,
1061 DBusConnection *sender,
1062 DBusConnection *addressed_recipient,
1063 DBusConnection *proposed_recipient,
1064 DBusMessage *message,
1067 BusClientPolicy *sender_policy;
1068 BusClientPolicy *recipient_policy;
1070 dbus_bool_t requested_reply;
1072 type = dbus_message_get_type (message);
1074 /* dispatch.c was supposed to ensure these invariants */
1075 _dbus_assert (dbus_message_get_destination (message) != NULL ||
1076 type == DBUS_MESSAGE_TYPE_SIGNAL ||
1077 (sender == NULL && !bus_connection_is_active (proposed_recipient)));
1078 _dbus_assert (type == DBUS_MESSAGE_TYPE_SIGNAL ||
1079 addressed_recipient != NULL ||
1080 strcmp (dbus_message_get_destination (message), DBUS_SERVICE_ORG_FREEDESKTOP_DBUS) == 0);
1084 case DBUS_MESSAGE_TYPE_METHOD_CALL:
1085 case DBUS_MESSAGE_TYPE_SIGNAL:
1086 case DBUS_MESSAGE_TYPE_METHOD_RETURN:
1087 case DBUS_MESSAGE_TYPE_ERROR:
1091 _dbus_verbose ("security check disallowing message of unknown type %d\n",
1094 dbus_set_error (error, DBUS_ERROR_ACCESS_DENIED,
1095 "Message bus will not accept messages of unknown type\n");
1100 requested_reply = FALSE;
1104 /* First verify the SELinux access controls. If allowed then
1105 * go on with the standard checks.
1107 if (!bus_selinux_allows_send (sender, proposed_recipient))
1109 const char *dest = dbus_message_get_destination (message);
1110 dbus_set_error (error, DBUS_ERROR_ACCESS_DENIED,
1111 "An SELinux policy prevents this sender "
1112 "from sending this message to this recipient "
1113 "(rejected message had interface \"%s\" "
1114 "member \"%s\" error name \"%s\" destination \"%s\")",
1115 dbus_message_get_interface (message) ?
1116 dbus_message_get_interface (message) : "(unset)",
1117 dbus_message_get_member (message) ?
1118 dbus_message_get_member (message) : "(unset)",
1119 dbus_message_get_error_name (message) ?
1120 dbus_message_get_error_name (message) : "(unset)",
1121 dest ? dest : DBUS_SERVICE_ORG_FREEDESKTOP_DBUS);
1122 _dbus_verbose ("SELinux security check denying send to service\n");
1126 if (bus_connection_is_active (sender))
1128 sender_policy = bus_connection_get_policy (sender);
1129 _dbus_assert (sender_policy != NULL);
1131 /* Fill in requested_reply variable with TRUE if this is a
1132 * reply and the reply was pending.
1134 if (dbus_message_get_reply_serial (message) != 0)
1136 if (proposed_recipient != NULL /* not to the bus driver */ &&
1137 addressed_recipient == proposed_recipient /* not eavesdropping */)
1141 dbus_error_init (&error2);
1142 requested_reply = bus_connections_check_reply (bus_connection_get_connections (sender),
1144 sender, addressed_recipient, message,
1146 if (dbus_error_is_set (&error2))
1148 dbus_move_error (&error2, error);
1156 /* Policy for inactive connections is that they can only send
1157 * the hello message to the bus driver
1159 if (proposed_recipient == NULL &&
1160 dbus_message_is_method_call (message,
1161 DBUS_INTERFACE_ORG_FREEDESKTOP_DBUS,
1164 _dbus_verbose ("security check allowing %s message\n",
1170 _dbus_verbose ("security check disallowing non-%s message\n",
1173 dbus_set_error (error, DBUS_ERROR_ACCESS_DENIED,
1174 "Client tried to send a message other than %s without being registered",
1183 sender_policy = NULL;
1185 /* If the sender is the bus driver, we assume any reply was a
1186 * requested reply as bus driver won't send bogus ones
1188 if (addressed_recipient == proposed_recipient /* not eavesdropping */ &&
1189 dbus_message_get_reply_serial (message) != 0)
1190 requested_reply = TRUE;
1193 _dbus_assert ((sender != NULL && sender_policy != NULL) ||
1194 (sender == NULL && sender_policy == NULL));
1196 if (proposed_recipient != NULL)
1198 /* only the bus driver can send to an inactive recipient (as it
1199 * owns no services, so other apps can't address it). Inactive
1200 * recipients can receive any message.
1202 if (bus_connection_is_active (proposed_recipient))
1204 recipient_policy = bus_connection_get_policy (proposed_recipient);
1205 _dbus_assert (recipient_policy != NULL);
1207 else if (sender == NULL)
1209 _dbus_verbose ("security check using NULL recipient policy for message from bus\n");
1210 recipient_policy = NULL;
1214 _dbus_assert_not_reached ("a message was somehow sent to an inactive recipient from a source other than the message bus\n");
1215 recipient_policy = NULL;
1219 recipient_policy = NULL;
1221 _dbus_assert ((proposed_recipient != NULL && recipient_policy != NULL) ||
1222 (proposed_recipient != NULL && sender == NULL && recipient_policy == NULL) ||
1223 (proposed_recipient == NULL && recipient_policy == NULL));
1225 if (sender_policy &&
1226 !bus_client_policy_check_can_send (sender_policy,
1232 const char *dest = dbus_message_get_destination (message);
1233 dbus_set_error (error, DBUS_ERROR_ACCESS_DENIED,
1234 "A security policy in place prevents this sender "
1235 "from sending this message to this recipient, "
1236 "see message bus configuration file (rejected message "
1237 "had interface \"%s\" member \"%s\" error name \"%s\" destination \"%s\")",
1238 dbus_message_get_interface (message) ?
1239 dbus_message_get_interface (message) : "(unset)",
1240 dbus_message_get_member (message) ?
1241 dbus_message_get_member (message) : "(unset)",
1242 dbus_message_get_error_name (message) ?
1243 dbus_message_get_error_name (message) : "(unset)",
1244 dest ? dest : DBUS_SERVICE_ORG_FREEDESKTOP_DBUS);
1245 _dbus_verbose ("security policy disallowing message due to sender policy\n");
1249 if (recipient_policy &&
1250 !bus_client_policy_check_can_receive (recipient_policy,
1254 addressed_recipient, proposed_recipient,
1257 const char *dest = dbus_message_get_destination (message);
1258 dbus_set_error (error, DBUS_ERROR_ACCESS_DENIED,
1259 "A security policy in place prevents this recipient "
1260 "from receiving this message from this sender, "
1261 "see message bus configuration file (rejected message "
1262 "had interface \"%s\" member \"%s\" error name \"%s\" destination \"%s\" reply serial %u requested_reply=%d)",
1263 dbus_message_get_interface (message) ?
1264 dbus_message_get_interface (message) : "(unset)",
1265 dbus_message_get_member (message) ?
1266 dbus_message_get_member (message) : "(unset)",
1267 dbus_message_get_error_name (message) ?
1268 dbus_message_get_error_name (message) : "(unset)",
1269 dest ? dest : DBUS_SERVICE_ORG_FREEDESKTOP_DBUS,
1270 dbus_message_get_reply_serial (message),
1272 _dbus_verbose ("security policy disallowing message due to recipient policy\n");
1276 /* See if limits on size have been exceeded */
1277 if (proposed_recipient &&
1278 dbus_connection_get_outgoing_size (proposed_recipient) >
1279 context->limits.max_outgoing_bytes)
1281 const char *dest = dbus_message_get_destination (message);
1282 dbus_set_error (error, DBUS_ERROR_LIMITS_EXCEEDED,
1283 "The destination service \"%s\" has a full message queue",
1284 dest ? dest : (proposed_recipient ?
1285 bus_connection_get_name (proposed_recipient) :
1286 DBUS_SERVICE_ORG_FREEDESKTOP_DBUS));
1287 _dbus_verbose ("security policy disallowing message due to full message queue\n");
1291 if (type == DBUS_MESSAGE_TYPE_METHOD_CALL)
1293 /* Record that we will allow a reply here in the future (don't
1294 * bother if the recipient is the bus). Only the addressed recipient
1297 if (sender && addressed_recipient &&
1298 !bus_connections_expect_reply (bus_connection_get_connections (sender),
1300 sender, addressed_recipient,
1303 _dbus_verbose ("Failed to record reply expectation or problem with the message expecting a reply\n");
1308 _dbus_verbose ("security policy allowing message\n");