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 "dir-watch.h"
34 #include <dbus/dbus-list.h>
35 #include <dbus/dbus-hash.h>
36 #include <dbus/dbus-internals.h>
48 BusConnections *connections;
49 BusActivation *activation;
50 BusRegistry *registry;
52 BusMatchmaker *matchmaker;
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_close (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 BusActivation *new_activation;
409 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
414 if (!_dbus_string_init (&full_address))
420 /* get our limits and timeout lengths */
421 bus_config_parser_get_limits (parser, &context->limits);
423 context->policy = bus_config_parser_steal_policy (parser);
424 _dbus_assert (context->policy != NULL);
426 /* We have to build the address backward, so that
427 * <listen> later in the config file have priority
429 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))
457 link = _dbus_list_get_prev_link (&context->servers, link);
461 dbus_free (context->address);
463 if (!_dbus_string_copy_data (&full_address, &context->address))
469 /* Create activation subsystem */
470 new_activation = bus_activation_new (context, &full_address,
471 bus_config_parser_get_service_dirs (parser),
473 if (new_activation == NULL)
475 _DBUS_ASSERT_ERROR_IS_SET (error);
480 bus_activation_unref (context->activation);
482 context->activation = new_activation;
484 /* Drop existing conf-dir watches (if applicable) */
487 bus_drop_all_directory_watches ();
489 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
493 _dbus_string_free (&full_address);
502 process_config_postinit (BusContext *context,
503 BusConfigParser *parser,
506 DBusHashTable *service_context_table;
508 service_context_table = bus_config_parser_steal_service_context_table (parser);
509 if (!bus_registry_set_service_context_table (context->registry,
510 service_context_table))
516 _dbus_hash_table_unref (service_context_table);
518 /* Watch all conf directories */
519 _dbus_list_foreach (bus_config_parser_get_conf_dirs (parser),
520 (DBusForeachFunction) bus_watch_directory,
527 bus_context_new (const DBusString *config_file,
528 ForceForkSetting force_fork,
529 DBusPipe *print_addr_pipe,
530 DBusPipe *print_pid_pipe,
534 BusConfigParser *parser;
536 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
541 if (!dbus_server_allocate_data_slot (&server_data_slot))
547 context = dbus_new0 (BusContext, 1);
553 context->refcount = 1;
555 if (!_dbus_string_copy_data (config_file, &context->config_file))
561 context->loop = _dbus_loop_new ();
562 if (context->loop == NULL)
568 context->registry = bus_registry_new (context);
569 if (context->registry == NULL)
575 parser = bus_config_load (config_file, TRUE, NULL, error);
578 _DBUS_ASSERT_ERROR_IS_SET (error);
582 if (!process_config_first_time_only (context, parser, error))
584 _DBUS_ASSERT_ERROR_IS_SET (error);
587 if (!process_config_every_time (context, parser, FALSE, error))
589 _DBUS_ASSERT_ERROR_IS_SET (error);
593 /* we need another ref of the server data slot for the context
596 if (!dbus_server_allocate_data_slot (&server_data_slot))
597 _dbus_assert_not_reached ("second ref of server data slot failed");
599 /* Note that we don't know whether the print_addr_pipe is
600 * one of the sockets we're using to listen on, or some
601 * other random thing. But I think the answer is "don't do
604 if (print_addr_pipe != NULL && _dbus_pipe_is_valid (print_addr_pipe))
607 const char *a = bus_context_get_address (context);
610 _dbus_assert (a != NULL);
611 if (!_dbus_string_init (&addr))
617 if (!_dbus_string_append (&addr, a) ||
618 !_dbus_string_append (&addr, "\n"))
620 _dbus_string_free (&addr);
625 bytes = _dbus_string_get_length (&addr);
626 if (_dbus_pipe_write (print_addr_pipe, &addr, 0, bytes, error) != bytes)
628 /* pipe write returns an error on failure but not short write */
629 if (error != NULL && !dbus_error_is_set (error))
631 dbus_set_error (error, DBUS_ERROR_FAILED,
632 "Printing message bus address: did not write all bytes\n");
634 _dbus_string_free (&addr);
638 if (!_dbus_pipe_is_stdout_or_stderr (print_addr_pipe))
639 _dbus_pipe_close (print_addr_pipe, 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 /* check user before we fork */
659 if (context->user != NULL)
661 if (!_dbus_verify_daemon_user (context->user))
663 dbus_set_error (error, DBUS_ERROR_FAILED,
664 "Could not get UID and GID for username \"%s\"",
670 /* Now become a daemon if appropriate */
671 if ((force_fork != FORK_NEVER && context->fork) || force_fork == FORK_ALWAYS)
675 if (context->pidfile)
676 _dbus_string_init_const (&u, context->pidfile);
678 if (!_dbus_become_daemon (context->pidfile ? &u : NULL,
682 _DBUS_ASSERT_ERROR_IS_SET (error);
688 /* Need to write PID file for ourselves, not for the child process */
689 if (context->pidfile != NULL)
693 _dbus_string_init_const (&u, context->pidfile);
695 if (!_dbus_write_pid_file (&u, _dbus_getpid (), error))
697 _DBUS_ASSERT_ERROR_IS_SET (error);
703 /* Write PID if requested */
704 if (print_pid_pipe != NULL && _dbus_pipe_is_valid (print_pid_pipe))
709 if (!_dbus_string_init (&pid))
715 if (!_dbus_string_append_int (&pid, _dbus_getpid ()) ||
716 !_dbus_string_append (&pid, "\n"))
718 _dbus_string_free (&pid);
723 bytes = _dbus_string_get_length (&pid);
724 if (_dbus_pipe_write (print_pid_pipe, &pid, 0, bytes, error) != bytes)
726 /* pipe_write sets error on failure but not short write */
727 if (error != NULL && !dbus_error_is_set (error))
729 dbus_set_error (error, DBUS_ERROR_FAILED,
730 "Printing message bus PID: did not write enough bytes\n");
732 _dbus_string_free (&pid);
736 if (!_dbus_pipe_is_stdout_or_stderr (print_pid_pipe))
737 _dbus_pipe_close (print_pid_pipe, NULL);
739 _dbus_string_free (&pid);
742 if (!process_config_postinit (context, parser, error))
744 _DBUS_ASSERT_ERROR_IS_SET (error);
750 bus_config_parser_unref (parser);
754 /* Here we change our credentials if required,
755 * as soon as we've set up our sockets and pidfile
757 if (context->user != NULL)
759 if (!_dbus_change_to_daemon_user (context->user, error))
761 _DBUS_ASSERT_ERROR_IS_SET (error);
766 if (!bus_selinux_full_init ())
768 _dbus_warn ("SELinux initialization failed\n");
771 dbus_server_free_data_slot (&server_data_slot);
777 bus_config_parser_unref (parser);
779 bus_context_unref (context);
781 if (server_data_slot >= 0)
782 dbus_server_free_data_slot (&server_data_slot);
788 bus_context_reload_config (BusContext *context,
791 BusConfigParser *parser;
792 DBusString config_file;
795 /* Flush the user database cache */
796 _dbus_flush_caches ();
799 _dbus_string_init_const (&config_file, context->config_file);
800 parser = bus_config_load (&config_file, TRUE, NULL, error);
803 _DBUS_ASSERT_ERROR_IS_SET (error);
807 if (!process_config_every_time (context, parser, TRUE, error))
809 _DBUS_ASSERT_ERROR_IS_SET (error);
812 if (!process_config_postinit (context, parser, error))
814 _DBUS_ASSERT_ERROR_IS_SET (error);
821 bus_config_parser_unref (parser);
826 shutdown_server (BusContext *context,
829 if (server == NULL ||
830 !dbus_server_get_is_connected (server))
833 if (!dbus_server_set_watch_functions (server,
837 _dbus_assert_not_reached ("setting watch functions to NULL failed");
839 if (!dbus_server_set_timeout_functions (server,
843 _dbus_assert_not_reached ("setting timeout functions to NULL failed");
845 dbus_server_disconnect (server);
849 bus_context_shutdown (BusContext *context)
853 link = _dbus_list_get_first_link (&context->servers);
856 shutdown_server (context, link->data);
858 link = _dbus_list_get_next_link (&context->servers, link);
863 bus_context_ref (BusContext *context)
865 _dbus_assert (context->refcount > 0);
866 context->refcount += 1;
872 bus_context_unref (BusContext *context)
874 _dbus_assert (context->refcount > 0);
875 context->refcount -= 1;
877 if (context->refcount == 0)
881 _dbus_verbose ("Finalizing bus context %p\n", context);
883 bus_context_shutdown (context);
885 if (context->connections)
887 bus_connections_unref (context->connections);
888 context->connections = NULL;
891 if (context->registry)
893 bus_registry_unref (context->registry);
894 context->registry = NULL;
897 if (context->activation)
899 bus_activation_unref (context->activation);
900 context->activation = NULL;
903 link = _dbus_list_get_first_link (&context->servers);
906 dbus_server_unref (link->data);
908 link = _dbus_list_get_next_link (&context->servers, link);
910 _dbus_list_clear (&context->servers);
914 bus_policy_unref (context->policy);
915 context->policy = NULL;
920 _dbus_loop_unref (context->loop);
921 context->loop = NULL;
924 if (context->matchmaker)
926 bus_matchmaker_unref (context->matchmaker);
927 context->matchmaker = NULL;
930 dbus_free (context->config_file);
931 dbus_free (context->type);
932 dbus_free (context->address);
933 dbus_free (context->user);
935 if (context->pidfile)
938 _dbus_string_init_const (&u, context->pidfile);
940 /* Deliberately ignore errors here, since there's not much
941 * we can do about it, and we're exiting anyways.
943 _dbus_delete_file (&u, NULL);
945 dbus_free (context->pidfile);
949 dbus_server_free_data_slot (&server_data_slot);
953 /* type may be NULL */
955 bus_context_get_type (BusContext *context)
957 return context->type;
961 bus_context_get_address (BusContext *context)
963 return context->address;
967 bus_context_get_registry (BusContext *context)
969 return context->registry;
973 bus_context_get_connections (BusContext *context)
975 return context->connections;
979 bus_context_get_activation (BusContext *context)
981 return context->activation;
985 bus_context_get_matchmaker (BusContext *context)
987 return context->matchmaker;
991 bus_context_get_loop (BusContext *context)
993 return context->loop;
997 bus_context_allow_unix_user (BusContext *context,
1000 return bus_policy_allow_unix_user (context->policy,
1004 /* For now this is never actually called because the default
1005 * DBusConnection behavior of 'same user that owns the bus can connect'
1006 * is all it would do.
1009 bus_context_allow_windows_user (BusContext *context,
1010 const char *windows_sid)
1012 return bus_policy_allow_windows_user (context->policy,
1017 bus_context_get_policy (BusContext *context)
1019 return context->policy;
1023 bus_context_create_client_policy (BusContext *context,
1024 DBusConnection *connection,
1027 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1028 return bus_policy_create_client_policy (context->policy, connection,
1033 bus_context_get_activation_timeout (BusContext *context)
1036 return context->limits.activation_timeout;
1040 bus_context_get_auth_timeout (BusContext *context)
1042 return context->limits.auth_timeout;
1046 bus_context_get_max_completed_connections (BusContext *context)
1048 return context->limits.max_completed_connections;
1052 bus_context_get_max_incomplete_connections (BusContext *context)
1054 return context->limits.max_incomplete_connections;
1058 bus_context_get_max_connections_per_user (BusContext *context)
1060 return context->limits.max_connections_per_user;
1064 bus_context_get_max_pending_activations (BusContext *context)
1066 return context->limits.max_pending_activations;
1070 bus_context_get_max_services_per_connection (BusContext *context)
1072 return context->limits.max_services_per_connection;
1076 bus_context_get_max_match_rules_per_connection (BusContext *context)
1078 return context->limits.max_match_rules_per_connection;
1082 bus_context_get_max_replies_per_connection (BusContext *context)
1084 return context->limits.max_replies_per_connection;
1088 bus_context_get_reply_timeout (BusContext *context)
1090 return context->limits.reply_timeout;
1094 * addressed_recipient is the recipient specified in the message.
1096 * proposed_recipient is the recipient we're considering sending
1097 * to right this second, and may be an eavesdropper.
1099 * sender is the sender of the message.
1101 * NULL for proposed_recipient or sender definitely means the bus driver.
1103 * NULL for addressed_recipient may mean the bus driver, or may mean
1104 * no destination was specified in the message (e.g. a signal).
1107 bus_context_check_security_policy (BusContext *context,
1108 BusTransaction *transaction,
1109 DBusConnection *sender,
1110 DBusConnection *addressed_recipient,
1111 DBusConnection *proposed_recipient,
1112 DBusMessage *message,
1115 BusClientPolicy *sender_policy;
1116 BusClientPolicy *recipient_policy;
1118 dbus_bool_t requested_reply;
1120 type = dbus_message_get_type (message);
1122 /* dispatch.c was supposed to ensure these invariants */
1123 _dbus_assert (dbus_message_get_destination (message) != NULL ||
1124 type == DBUS_MESSAGE_TYPE_SIGNAL ||
1125 (sender == NULL && !bus_connection_is_active (proposed_recipient)));
1126 _dbus_assert (type == DBUS_MESSAGE_TYPE_SIGNAL ||
1127 addressed_recipient != NULL ||
1128 strcmp (dbus_message_get_destination (message), DBUS_SERVICE_DBUS) == 0);
1132 case DBUS_MESSAGE_TYPE_METHOD_CALL:
1133 case DBUS_MESSAGE_TYPE_SIGNAL:
1134 case DBUS_MESSAGE_TYPE_METHOD_RETURN:
1135 case DBUS_MESSAGE_TYPE_ERROR:
1139 _dbus_verbose ("security check disallowing message of unknown type %d\n",
1142 dbus_set_error (error, DBUS_ERROR_ACCESS_DENIED,
1143 "Message bus will not accept messages of unknown type\n");
1148 requested_reply = FALSE;
1154 dest = dbus_message_get_destination (message);
1156 /* First verify the SELinux access controls. If allowed then
1157 * go on with the standard checks.
1159 if (!bus_selinux_allows_send (sender, proposed_recipient,
1160 dbus_message_type_to_string (dbus_message_get_type (message)),
1161 dbus_message_get_interface (message),
1162 dbus_message_get_member (message),
1163 dbus_message_get_error_name (message),
1164 dest ? dest : DBUS_SERVICE_DBUS, error))
1167 if (dbus_error_is_set (error) &&
1168 dbus_error_has_name (error, DBUS_ERROR_NO_MEMORY))
1174 dbus_set_error (error, DBUS_ERROR_ACCESS_DENIED,
1175 "An SELinux policy prevents this sender "
1176 "from sending this message to this recipient "
1177 "(rejected message had interface \"%s\" "
1178 "member \"%s\" error name \"%s\" destination \"%s\")",
1179 dbus_message_get_interface (message) ?
1180 dbus_message_get_interface (message) : "(unset)",
1181 dbus_message_get_member (message) ?
1182 dbus_message_get_member (message) : "(unset)",
1183 dbus_message_get_error_name (message) ?
1184 dbus_message_get_error_name (message) : "(unset)",
1185 dest ? dest : DBUS_SERVICE_DBUS);
1186 _dbus_verbose ("SELinux security check denying send to service\n");
1190 if (bus_connection_is_active (sender))
1192 sender_policy = bus_connection_get_policy (sender);
1193 _dbus_assert (sender_policy != NULL);
1195 /* Fill in requested_reply variable with TRUE if this is a
1196 * reply and the reply was pending.
1198 if (dbus_message_get_reply_serial (message) != 0)
1200 if (proposed_recipient != NULL /* not to the bus driver */ &&
1201 addressed_recipient == proposed_recipient /* not eavesdropping */)
1205 dbus_error_init (&error2);
1206 requested_reply = bus_connections_check_reply (bus_connection_get_connections (sender),
1208 sender, addressed_recipient, message,
1210 if (dbus_error_is_set (&error2))
1212 dbus_move_error (&error2, error);
1220 /* Policy for inactive connections is that they can only send
1221 * the hello message to the bus driver
1223 if (proposed_recipient == NULL &&
1224 dbus_message_is_method_call (message,
1225 DBUS_INTERFACE_DBUS,
1228 _dbus_verbose ("security check allowing %s message\n",
1234 _dbus_verbose ("security check disallowing non-%s message\n",
1237 dbus_set_error (error, DBUS_ERROR_ACCESS_DENIED,
1238 "Client tried to send a message other than %s without being registered",
1247 sender_policy = NULL;
1249 /* If the sender is the bus driver, we assume any reply was a
1250 * requested reply as bus driver won't send bogus ones
1252 if (addressed_recipient == proposed_recipient /* not eavesdropping */ &&
1253 dbus_message_get_reply_serial (message) != 0)
1254 requested_reply = TRUE;
1257 _dbus_assert ((sender != NULL && sender_policy != NULL) ||
1258 (sender == NULL && sender_policy == NULL));
1260 if (proposed_recipient != NULL)
1262 /* only the bus driver can send to an inactive recipient (as it
1263 * owns no services, so other apps can't address it). Inactive
1264 * recipients can receive any message.
1266 if (bus_connection_is_active (proposed_recipient))
1268 recipient_policy = bus_connection_get_policy (proposed_recipient);
1269 _dbus_assert (recipient_policy != NULL);
1271 else if (sender == NULL)
1273 _dbus_verbose ("security check using NULL recipient policy for message from bus\n");
1274 recipient_policy = NULL;
1278 _dbus_assert_not_reached ("a message was somehow sent to an inactive recipient from a source other than the message bus\n");
1279 recipient_policy = NULL;
1283 recipient_policy = NULL;
1285 _dbus_assert ((proposed_recipient != NULL && recipient_policy != NULL) ||
1286 (proposed_recipient != NULL && sender == NULL && recipient_policy == NULL) ||
1287 (proposed_recipient == NULL && recipient_policy == NULL));
1289 if (sender_policy &&
1290 !bus_client_policy_check_can_send (sender_policy,
1298 dest = dbus_message_get_destination (message);
1299 dbus_set_error (error, DBUS_ERROR_ACCESS_DENIED,
1300 "A security policy in place prevents this sender "
1301 "from sending this message to this recipient, "
1302 "see message bus configuration file (rejected message "
1303 "had interface \"%s\" member \"%s\" error name \"%s\" destination \"%s\")",
1304 dbus_message_get_interface (message) ?
1305 dbus_message_get_interface (message) : "(unset)",
1306 dbus_message_get_member (message) ?
1307 dbus_message_get_member (message) : "(unset)",
1308 dbus_message_get_error_name (message) ?
1309 dbus_message_get_error_name (message) : "(unset)",
1310 dest ? dest : DBUS_SERVICE_DBUS);
1311 _dbus_verbose ("security policy disallowing message due to sender policy\n");
1315 if (recipient_policy &&
1316 !bus_client_policy_check_can_receive (recipient_policy,
1320 addressed_recipient, proposed_recipient,
1325 dest = dbus_message_get_destination (message);
1326 dbus_set_error (error, DBUS_ERROR_ACCESS_DENIED,
1327 "A security policy in place prevents this recipient "
1328 "from receiving this message from this sender, "
1329 "see message bus configuration file (rejected message "
1330 "had interface \"%s\" member \"%s\" error name \"%s\" destination \"%s\" reply serial %u requested_reply=%d)",
1331 dbus_message_get_interface (message) ?
1332 dbus_message_get_interface (message) : "(unset)",
1333 dbus_message_get_member (message) ?
1334 dbus_message_get_member (message) : "(unset)",
1335 dbus_message_get_error_name (message) ?
1336 dbus_message_get_error_name (message) : "(unset)",
1337 dest ? dest : DBUS_SERVICE_DBUS,
1338 dbus_message_get_reply_serial (message),
1340 _dbus_verbose ("security policy disallowing message due to recipient policy\n");
1344 /* See if limits on size have been exceeded */
1345 if (proposed_recipient &&
1346 dbus_connection_get_outgoing_size (proposed_recipient) >
1347 context->limits.max_outgoing_bytes)
1351 dest = dbus_message_get_destination (message);
1352 dbus_set_error (error, DBUS_ERROR_LIMITS_EXCEEDED,
1353 "The destination service \"%s\" has a full message queue",
1354 dest ? dest : (proposed_recipient ?
1355 bus_connection_get_name (proposed_recipient) :
1356 DBUS_SERVICE_DBUS));
1357 _dbus_verbose ("security policy disallowing message due to full message queue\n");
1361 /* Record that we will allow a reply here in the future (don't
1362 * bother if the recipient is the bus or this is an eavesdropping
1363 * connection). Only the addressed recipient may reply.
1365 if (type == DBUS_MESSAGE_TYPE_METHOD_CALL &&
1367 addressed_recipient &&
1368 addressed_recipient == proposed_recipient && /* not eavesdropping */
1369 !bus_connections_expect_reply (bus_connection_get_connections (sender),
1371 sender, addressed_recipient,
1374 _dbus_verbose ("Failed to record reply expectation or problem with the message expecting a reply\n");
1378 _dbus_verbose ("security policy allowing message\n");