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 2.1
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., 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);
286 _dbus_string_init_const (&u, pidfile);
288 if (_dbus_stat (&u, &stbuf, NULL))
290 dbus_set_error (error, DBUS_ERROR_FAILED,
291 "The pid file \"%s\" exists, if the message bus is not running, remove this file",
297 /* keep around the pid filename so we can delete it later */
298 context->pidfile = _dbus_strdup (pidfile);
300 /* Build an array of auth mechanisms */
302 auth_mechanisms_list = bus_config_parser_get_mechanisms (parser);
303 len = _dbus_list_get_length (auth_mechanisms_list);
309 auth_mechanisms = dbus_new0 (char*, len + 1);
310 if (auth_mechanisms == NULL)
317 link = _dbus_list_get_first_link (auth_mechanisms_list);
320 auth_mechanisms[i] = _dbus_strdup (link->data);
321 if (auth_mechanisms[i] == NULL)
326 link = _dbus_list_get_next_link (auth_mechanisms_list, link);
331 auth_mechanisms = NULL;
334 /* Listen on our addresses */
336 addresses = bus_config_parser_get_addresses (parser);
338 link = _dbus_list_get_first_link (addresses);
343 server = dbus_server_listen (link->data, error);
346 _DBUS_ASSERT_ERROR_IS_SET (error);
349 else if (!setup_server (context, server, auth_mechanisms, error))
351 _DBUS_ASSERT_ERROR_IS_SET (error);
355 if (!_dbus_list_append (&context->servers, server))
361 link = _dbus_list_get_next_link (addresses, link);
364 /* note that type may be NULL */
365 context->type = _dbus_strdup (bus_config_parser_get_type (parser));
366 if (bus_config_parser_get_type (parser) != NULL && context->type == NULL)
372 user = bus_config_parser_get_user (parser);
375 context->user = _dbus_strdup (user);
376 if (context->user == NULL)
383 context->fork = bus_config_parser_get_fork (parser);
385 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
389 dbus_free_string_array (auth_mechanisms);
393 /* This code gets executed every time the config files
394 are parsed: both during BusContext construction
397 process_config_every_time (BusContext *context,
398 BusConfigParser *parser,
399 dbus_bool_t is_reload,
402 DBusString full_address;
404 DBusHashTable *service_sid_table;
408 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
412 if (!_dbus_string_init (&full_address))
418 /* get our limits and timeout lengths */
419 bus_config_parser_get_limits (parser, &context->limits);
421 context->policy = bus_config_parser_steal_policy (parser);
422 _dbus_assert (context->policy != NULL);
424 /* We have to build the address backward, so that
425 * <listen> later in the config file have priority
427 link = _dbus_list_get_last_link (&context->servers);
432 addr = dbus_server_get_address (link->data);
439 if (_dbus_string_get_length (&full_address) > 0)
441 if (!_dbus_string_append (&full_address, ";"))
448 if (!_dbus_string_append (&full_address, addr))
456 link = _dbus_list_get_prev_link (&context->servers, link);
460 dbus_free (context->address);
462 if (!_dbus_string_copy_data (&full_address, &context->address))
468 /* Create activation subsystem */
471 bus_activation_unref (context->activation);
473 context->activation = bus_activation_new (context, &full_address,
474 bus_config_parser_get_service_dirs (parser),
476 if (context->activation == NULL)
478 _DBUS_ASSERT_ERROR_IS_SET (error);
482 service_sid_table = bus_config_parser_steal_service_sid_table (parser);
483 bus_registry_set_service_sid_table (context->registry,
485 _dbus_hash_table_unref (service_sid_table);
487 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
491 _dbus_string_free (&full_address);
496 load_config (BusContext *context,
497 dbus_bool_t is_reload,
500 BusConfigParser *parser;
501 DBusString config_file;
504 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
509 _dbus_string_init_const (&config_file, context->config_file);
510 parser = bus_config_load (&config_file, TRUE, NULL, error);
513 _DBUS_ASSERT_ERROR_IS_SET (error);
517 if (!is_reload && !process_config_first_time_only (context, parser, error))
519 _DBUS_ASSERT_ERROR_IS_SET (error);
523 if (!process_config_every_time (context, parser, is_reload, error))
525 _DBUS_ASSERT_ERROR_IS_SET (error);
529 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
534 bus_config_parser_unref (parser);
539 bus_context_new (const DBusString *config_file,
540 ForceForkSetting force_fork,
547 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
549 if (!dbus_server_allocate_data_slot (&server_data_slot))
555 context = dbus_new0 (BusContext, 1);
561 context->refcount = 1;
563 if (!_dbus_string_copy_data (config_file, &context->config_file))
569 context->loop = _dbus_loop_new ();
570 if (context->loop == NULL)
576 context->registry = bus_registry_new (context);
577 if (context->registry == NULL)
583 if (!load_config (context, FALSE, error))
585 _DBUS_ASSERT_ERROR_IS_SET (error);
589 /* we need another ref of the server data slot for the context
592 if (!dbus_server_allocate_data_slot (&server_data_slot))
593 _dbus_assert_not_reached ("second ref of server data slot failed");
595 context->user_database = _dbus_user_database_new ();
596 if (context->user_database == NULL)
602 /* Note that we don't know whether the print_addr_fd is
603 * one of the sockets we're using to listen on, or some
604 * other random thing. But I think the answer is "don't do
607 if (print_addr_fd >= 0)
610 const char *a = bus_context_get_address (context);
613 _dbus_assert (a != NULL);
614 if (!_dbus_string_init (&addr))
620 if (!_dbus_string_append (&addr, a) ||
621 !_dbus_string_append (&addr, "\n"))
623 _dbus_string_free (&addr);
628 bytes = _dbus_string_get_length (&addr);
629 if (_dbus_write (print_addr_fd, &addr, 0, bytes) != bytes)
631 dbus_set_error (error, DBUS_ERROR_FAILED,
632 "Printing message bus address: %s\n",
633 _dbus_strerror (errno));
634 _dbus_string_free (&addr);
638 if (print_addr_fd > 2)
639 _dbus_close (print_addr_fd, NULL);
641 _dbus_string_free (&addr);
644 context->connections = bus_connections_new (context);
645 if (context->connections == NULL)
651 context->matchmaker = bus_matchmaker_new ();
652 if (context->matchmaker == NULL)
658 /* Now become a daemon if appropriate */
659 if ((force_fork != FORK_NEVER && context->fork) || force_fork == FORK_ALWAYS)
663 if (context->pidfile)
664 _dbus_string_init_const (&u, context->pidfile);
666 if (!_dbus_become_daemon (context->pidfile ? &u : NULL, error))
668 _DBUS_ASSERT_ERROR_IS_SET (error);
674 /* Need to write PID file for ourselves, not for the child process */
675 if (context->pidfile != NULL)
679 _dbus_string_init_const (&u, context->pidfile);
681 if (!_dbus_write_pid_file (&u, _dbus_getpid (), error))
683 _DBUS_ASSERT_ERROR_IS_SET (error);
689 /* Write PID if requested */
690 if (print_pid_fd >= 0)
695 if (!_dbus_string_init (&pid))
701 if (!_dbus_string_append_int (&pid, _dbus_getpid ()) ||
702 !_dbus_string_append (&pid, "\n"))
704 _dbus_string_free (&pid);
709 bytes = _dbus_string_get_length (&pid);
710 if (_dbus_write (print_pid_fd, &pid, 0, bytes) != bytes)
712 dbus_set_error (error, DBUS_ERROR_FAILED,
713 "Printing message bus PID: %s\n",
714 _dbus_strerror (errno));
715 _dbus_string_free (&pid);
719 if (print_pid_fd > 2)
720 _dbus_close (print_pid_fd, NULL);
722 _dbus_string_free (&pid);
725 /* Here we change our credentials if required,
726 * as soon as we've set up our sockets and pidfile
728 if (context->user != NULL)
730 DBusCredentials creds;
733 _dbus_string_init_const (&u, context->user);
735 if (!_dbus_credentials_from_username (&u, &creds) ||
739 dbus_set_error (error, DBUS_ERROR_FAILED,
740 "Could not get UID and GID for username \"%s\"",
745 if (!_dbus_change_identity (creds.uid, creds.gid, error))
747 _DBUS_ASSERT_ERROR_IS_SET (error);
752 dbus_server_free_data_slot (&server_data_slot);
758 bus_context_unref (context);
760 if (server_data_slot >= 0)
761 dbus_server_free_data_slot (&server_data_slot);
767 bus_context_reload_config (BusContext *context,
770 return load_config (context,
771 TRUE, /* yes, we are re-loading */
776 shutdown_server (BusContext *context,
779 if (server == NULL ||
780 !dbus_server_get_is_connected (server))
783 if (!dbus_server_set_watch_functions (server,
787 _dbus_assert_not_reached ("setting watch functions to NULL failed");
789 if (!dbus_server_set_timeout_functions (server,
793 _dbus_assert_not_reached ("setting timeout functions to NULL failed");
795 dbus_server_disconnect (server);
799 bus_context_shutdown (BusContext *context)
803 link = _dbus_list_get_first_link (&context->servers);
806 shutdown_server (context, link->data);
808 link = _dbus_list_get_next_link (&context->servers, link);
813 bus_context_ref (BusContext *context)
815 _dbus_assert (context->refcount > 0);
816 context->refcount += 1;
822 bus_context_unref (BusContext *context)
824 _dbus_assert (context->refcount > 0);
825 context->refcount -= 1;
827 if (context->refcount == 0)
831 _dbus_verbose ("Finalizing bus context %p\n", context);
833 bus_context_shutdown (context);
835 if (context->connections)
837 bus_connections_unref (context->connections);
838 context->connections = NULL;
841 if (context->registry)
843 bus_registry_unref (context->registry);
844 context->registry = NULL;
847 if (context->activation)
849 bus_activation_unref (context->activation);
850 context->activation = NULL;
853 link = _dbus_list_get_first_link (&context->servers);
856 dbus_server_unref (link->data);
858 link = _dbus_list_get_next_link (&context->servers, link);
860 _dbus_list_clear (&context->servers);
864 bus_policy_unref (context->policy);
865 context->policy = NULL;
870 _dbus_loop_unref (context->loop);
871 context->loop = NULL;
874 if (context->matchmaker)
876 bus_matchmaker_unref (context->matchmaker);
877 context->matchmaker = NULL;
880 dbus_free (context->config_file);
881 dbus_free (context->type);
882 dbus_free (context->address);
883 dbus_free (context->user);
885 if (context->pidfile)
888 _dbus_string_init_const (&u, context->pidfile);
890 /* Deliberately ignore errors here, since there's not much
891 * we can do about it, and we're exiting anyways.
893 _dbus_delete_file (&u, NULL);
895 dbus_free (context->pidfile);
898 if (context->user_database != NULL)
899 _dbus_user_database_unref (context->user_database);
903 dbus_server_free_data_slot (&server_data_slot);
907 /* type may be NULL */
909 bus_context_get_type (BusContext *context)
911 return context->type;
915 bus_context_get_address (BusContext *context)
917 return context->address;
921 bus_context_get_registry (BusContext *context)
923 return context->registry;
927 bus_context_get_connections (BusContext *context)
929 return context->connections;
933 bus_context_get_activation (BusContext *context)
935 return context->activation;
939 bus_context_get_matchmaker (BusContext *context)
941 return context->matchmaker;
945 bus_context_get_loop (BusContext *context)
947 return context->loop;
951 bus_context_get_user_database (BusContext *context)
953 return context->user_database;
957 bus_context_allow_user (BusContext *context,
960 return bus_policy_allow_user (context->policy,
961 context->user_database,
966 bus_context_get_policy (BusContext *context)
968 return context->policy;
972 bus_context_create_client_policy (BusContext *context,
973 DBusConnection *connection,
976 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
977 return bus_policy_create_client_policy (context->policy, connection,
982 bus_context_get_activation_timeout (BusContext *context)
985 return context->limits.activation_timeout;
989 bus_context_get_auth_timeout (BusContext *context)
991 return context->limits.auth_timeout;
995 bus_context_get_max_completed_connections (BusContext *context)
997 return context->limits.max_completed_connections;
1001 bus_context_get_max_incomplete_connections (BusContext *context)
1003 return context->limits.max_incomplete_connections;
1007 bus_context_get_max_connections_per_user (BusContext *context)
1009 return context->limits.max_connections_per_user;
1013 bus_context_get_max_pending_activations (BusContext *context)
1015 return context->limits.max_pending_activations;
1019 bus_context_get_max_services_per_connection (BusContext *context)
1021 return context->limits.max_services_per_connection;
1025 bus_context_get_max_match_rules_per_connection (BusContext *context)
1027 return context->limits.max_match_rules_per_connection;
1031 bus_context_get_max_replies_per_connection (BusContext *context)
1033 return context->limits.max_replies_per_connection;
1037 bus_context_get_reply_timeout (BusContext *context)
1039 return context->limits.reply_timeout;
1043 * addressed_recipient is the recipient specified in the message.
1045 * proposed_recipient is the recipient we're considering sending
1046 * to right this second, and may be an eavesdropper.
1048 * sender is the sender of the message.
1050 * NULL for proposed_recipient or sender definitely means the bus driver.
1052 * NULL for addressed_recipient may mean the bus driver, or may mean
1053 * no destination was specified in the message (e.g. a signal).
1056 bus_context_check_security_policy (BusContext *context,
1057 BusTransaction *transaction,
1058 DBusConnection *sender,
1059 DBusConnection *addressed_recipient,
1060 DBusConnection *proposed_recipient,
1061 DBusMessage *message,
1064 BusClientPolicy *sender_policy;
1065 BusClientPolicy *recipient_policy;
1067 dbus_bool_t requested_reply;
1069 type = dbus_message_get_type (message);
1071 /* dispatch.c was supposed to ensure these invariants */
1072 _dbus_assert (dbus_message_get_destination (message) != NULL ||
1073 type == DBUS_MESSAGE_TYPE_SIGNAL ||
1074 (sender == NULL && !bus_connection_is_active (proposed_recipient)));
1075 _dbus_assert (type == DBUS_MESSAGE_TYPE_SIGNAL ||
1076 addressed_recipient != NULL ||
1077 strcmp (dbus_message_get_destination (message), DBUS_SERVICE_ORG_FREEDESKTOP_DBUS) == 0);
1081 case DBUS_MESSAGE_TYPE_METHOD_CALL:
1082 case DBUS_MESSAGE_TYPE_SIGNAL:
1083 case DBUS_MESSAGE_TYPE_METHOD_RETURN:
1084 case DBUS_MESSAGE_TYPE_ERROR:
1088 _dbus_verbose ("security check disallowing message of unknown type %d\n",
1091 dbus_set_error (error, DBUS_ERROR_ACCESS_DENIED,
1092 "Message bus will not accept messages of unknown type\n");
1097 requested_reply = FALSE;
1101 /* First verify the SELinux access controls. If allowed then
1102 * go on with the standard checks.
1104 if (!bus_selinux_allows_send (sender, proposed_recipient))
1106 const char *dest = dbus_message_get_destination (message);
1107 dbus_set_error (error, DBUS_ERROR_ACCESS_DENIED,
1108 "An SELinux policy prevents this sender "
1109 "from sending this message to this recipient "
1110 "(rejected message had interface \"%s\" "
1111 "member \"%s\" error name \"%s\" destination \"%s\")",
1112 dbus_message_get_interface (message) ?
1113 dbus_message_get_interface (message) : "(unset)",
1114 dbus_message_get_member (message) ?
1115 dbus_message_get_member (message) : "(unset)",
1116 dbus_message_get_error_name (message) ?
1117 dbus_message_get_error_name (message) : "(unset)",
1118 dest ? dest : DBUS_SERVICE_ORG_FREEDESKTOP_DBUS);
1119 _dbus_verbose ("SELinux security check denying send to service\n");
1123 if (bus_connection_is_active (sender))
1125 sender_policy = bus_connection_get_policy (sender);
1126 _dbus_assert (sender_policy != NULL);
1128 /* Fill in requested_reply variable with TRUE if this is a
1129 * reply and the reply was pending.
1131 if (dbus_message_get_reply_serial (message) != 0)
1133 if (proposed_recipient != NULL /* not to the bus driver */ &&
1134 addressed_recipient == proposed_recipient /* not eavesdropping */)
1138 dbus_error_init (&error2);
1139 requested_reply = bus_connections_check_reply (bus_connection_get_connections (sender),
1141 sender, addressed_recipient, message,
1143 if (dbus_error_is_set (&error2))
1145 dbus_move_error (&error2, error);
1153 /* Policy for inactive connections is that they can only send
1154 * the hello message to the bus driver
1156 if (proposed_recipient == NULL &&
1157 dbus_message_is_method_call (message,
1158 DBUS_INTERFACE_ORG_FREEDESKTOP_DBUS,
1161 _dbus_verbose ("security check allowing %s message\n",
1167 _dbus_verbose ("security check disallowing non-%s message\n",
1170 dbus_set_error (error, DBUS_ERROR_ACCESS_DENIED,
1171 "Client tried to send a message other than %s without being registered",
1180 sender_policy = NULL;
1182 /* If the sender is the bus driver, we assume any reply was a
1183 * requested reply as bus driver won't send bogus ones
1185 if (addressed_recipient == proposed_recipient /* not eavesdropping */ &&
1186 dbus_message_get_reply_serial (message) != 0)
1187 requested_reply = TRUE;
1190 _dbus_assert ((sender != NULL && sender_policy != NULL) ||
1191 (sender == NULL && sender_policy == NULL));
1193 if (proposed_recipient != NULL)
1195 /* only the bus driver can send to an inactive recipient (as it
1196 * owns no services, so other apps can't address it). Inactive
1197 * recipients can receive any message.
1199 if (bus_connection_is_active (proposed_recipient))
1201 recipient_policy = bus_connection_get_policy (proposed_recipient);
1202 _dbus_assert (recipient_policy != NULL);
1204 else if (sender == NULL)
1206 _dbus_verbose ("security check using NULL recipient policy for message from bus\n");
1207 recipient_policy = NULL;
1211 _dbus_assert_not_reached ("a message was somehow sent to an inactive recipient from a source other than the message bus\n");
1212 recipient_policy = NULL;
1216 recipient_policy = NULL;
1218 _dbus_assert ((proposed_recipient != NULL && recipient_policy != NULL) ||
1219 (proposed_recipient != NULL && sender == NULL && recipient_policy == NULL) ||
1220 (proposed_recipient == NULL && recipient_policy == NULL));
1222 if (sender_policy &&
1223 !bus_client_policy_check_can_send (sender_policy,
1229 const char *dest = dbus_message_get_destination (message);
1230 dbus_set_error (error, DBUS_ERROR_ACCESS_DENIED,
1231 "A security policy in place prevents this sender "
1232 "from sending this message to this recipient, "
1233 "see message bus configuration file (rejected message "
1234 "had interface \"%s\" member \"%s\" error name \"%s\" destination \"%s\")",
1235 dbus_message_get_interface (message) ?
1236 dbus_message_get_interface (message) : "(unset)",
1237 dbus_message_get_member (message) ?
1238 dbus_message_get_member (message) : "(unset)",
1239 dbus_message_get_error_name (message) ?
1240 dbus_message_get_error_name (message) : "(unset)",
1241 dest ? dest : DBUS_SERVICE_ORG_FREEDESKTOP_DBUS);
1242 _dbus_verbose ("security policy disallowing message due to sender policy\n");
1246 if (recipient_policy &&
1247 !bus_client_policy_check_can_receive (recipient_policy,
1251 addressed_recipient, proposed_recipient,
1254 const char *dest = dbus_message_get_destination (message);
1255 dbus_set_error (error, DBUS_ERROR_ACCESS_DENIED,
1256 "A security policy in place prevents this recipient "
1257 "from receiving this message from this sender, "
1258 "see message bus configuration file (rejected message "
1259 "had interface \"%s\" member \"%s\" error name \"%s\" destination \"%s\" reply serial %u requested_reply=%d)",
1260 dbus_message_get_interface (message) ?
1261 dbus_message_get_interface (message) : "(unset)",
1262 dbus_message_get_member (message) ?
1263 dbus_message_get_member (message) : "(unset)",
1264 dbus_message_get_error_name (message) ?
1265 dbus_message_get_error_name (message) : "(unset)",
1266 dest ? dest : DBUS_SERVICE_ORG_FREEDESKTOP_DBUS,
1267 dbus_message_get_reply_serial (message),
1269 _dbus_verbose ("security policy disallowing message due to recipient policy\n");
1273 /* See if limits on size have been exceeded */
1274 if (proposed_recipient &&
1275 dbus_connection_get_outgoing_size (proposed_recipient) >
1276 context->limits.max_outgoing_bytes)
1278 const char *dest = dbus_message_get_destination (message);
1279 dbus_set_error (error, DBUS_ERROR_LIMITS_EXCEEDED,
1280 "The destination service \"%s\" has a full message queue",
1281 dest ? dest : (proposed_recipient ?
1282 bus_connection_get_name (proposed_recipient) :
1283 DBUS_SERVICE_ORG_FREEDESKTOP_DBUS));
1284 _dbus_verbose ("security policy disallowing message due to full message queue\n");
1288 if (type == DBUS_MESSAGE_TYPE_METHOD_CALL)
1290 /* Record that we will allow a reply here in the future (don't
1291 * bother if the recipient is the bus). Only the addressed recipient
1294 if (sender && addressed_recipient &&
1295 !bus_connections_expect_reply (bus_connection_get_connections (sender),
1297 sender, addressed_recipient,
1300 _dbus_verbose ("Failed to record reply expectation or problem with the message expecting a reply\n");
1305 _dbus_verbose ("security policy allowing message\n");