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., 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>
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;
59 unsigned int allow_anonymous : 1;
62 static dbus_int32_t server_data_slot = -1;
69 #define BUS_SERVER_DATA(server) (dbus_server_get_data ((server), server_data_slot))
72 server_get_context (DBusServer *server)
77 if (!dbus_server_allocate_data_slot (&server_data_slot))
80 bd = BUS_SERVER_DATA (server);
83 dbus_server_free_data_slot (&server_data_slot);
87 context = bd->context;
89 dbus_server_free_data_slot (&server_data_slot);
95 server_watch_callback (DBusWatch *watch,
96 unsigned int condition,
99 /* FIXME this can be done in dbus-mainloop.c
100 * if the code in activation.c for the babysitter
101 * watch handler is fixed.
104 return dbus_watch_handle (watch, condition);
108 add_server_watch (DBusWatch *watch,
111 DBusServer *server = data;
114 context = server_get_context (server);
116 return _dbus_loop_add_watch (context->loop,
117 watch, server_watch_callback, server,
122 remove_server_watch (DBusWatch *watch,
125 DBusServer *server = data;
128 context = server_get_context (server);
130 _dbus_loop_remove_watch (context->loop,
131 watch, server_watch_callback, server);
136 server_timeout_callback (DBusTimeout *timeout,
139 /* can return FALSE on OOM but we just let it fire again later */
140 dbus_timeout_handle (timeout);
144 add_server_timeout (DBusTimeout *timeout,
147 DBusServer *server = data;
150 context = server_get_context (server);
152 return _dbus_loop_add_timeout (context->loop,
153 timeout, server_timeout_callback, server, NULL);
157 remove_server_timeout (DBusTimeout *timeout,
160 DBusServer *server = data;
163 context = server_get_context (server);
165 _dbus_loop_remove_timeout (context->loop,
166 timeout, server_timeout_callback, server);
170 new_connection_callback (DBusServer *server,
171 DBusConnection *new_connection,
174 BusContext *context = data;
176 if (!bus_connections_setup_connection (context->connections, new_connection))
178 _dbus_verbose ("No memory to setup new connection\n");
180 /* if we don't do this, it will get unref'd without
181 * being disconnected... kind of strange really
182 * that we have to do this, people won't get it right
185 dbus_connection_close (new_connection);
188 dbus_connection_set_max_received_size (new_connection,
189 context->limits.max_incoming_bytes);
191 dbus_connection_set_max_message_size (new_connection,
192 context->limits.max_message_size);
194 dbus_connection_set_max_received_unix_fds (new_connection,
195 context->limits.max_incoming_unix_fds);
197 dbus_connection_set_max_message_unix_fds (new_connection,
198 context->limits.max_message_unix_fds);
200 dbus_connection_set_allow_anonymous (new_connection,
201 context->allow_anonymous);
203 /* on OOM, we won't have ref'd the connection so it will die. */
207 free_server_data (void *data)
209 BusServerData *bd = data;
215 setup_server (BusContext *context,
217 char **auth_mechanisms,
222 bd = dbus_new0 (BusServerData, 1);
223 if (bd == NULL || !dbus_server_set_data (server,
225 bd, free_server_data))
232 bd->context = context;
234 if (!dbus_server_set_auth_mechanisms (server, (const char**) auth_mechanisms))
240 dbus_server_set_new_connection_function (server,
241 new_connection_callback,
244 if (!dbus_server_set_watch_functions (server,
255 if (!dbus_server_set_timeout_functions (server,
257 remove_server_timeout,
268 /* This code only gets executed the first time the
269 * config files are parsed. It is not executed
270 * when config files are reloaded.
273 process_config_first_time_only (BusContext *context,
274 BusConfigParser *parser,
278 DBusList **addresses;
279 const char *user, *pidfile;
280 char **auth_mechanisms;
281 DBusList **auth_mechanisms_list;
285 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
288 auth_mechanisms = NULL;
290 /* Check for an existing pid file. Of course this is a race;
291 * we'd have to use fcntl() locks on the pid file to
292 * avoid that. But we want to check for the pid file
293 * before overwriting any existing sockets, etc.
295 pidfile = bus_config_parser_get_pidfile (parser);
301 _dbus_string_init_const (&u, pidfile);
303 if (_dbus_stat (&u, &stbuf, NULL))
305 dbus_set_error (error, DBUS_ERROR_FAILED,
306 "The pid file \"%s\" exists, if the message bus is not running, remove this file",
312 /* keep around the pid filename so we can delete it later */
313 context->pidfile = _dbus_strdup (pidfile);
315 /* Build an array of auth mechanisms */
317 auth_mechanisms_list = bus_config_parser_get_mechanisms (parser);
318 len = _dbus_list_get_length (auth_mechanisms_list);
324 auth_mechanisms = dbus_new0 (char*, len + 1);
325 if (auth_mechanisms == NULL)
332 link = _dbus_list_get_first_link (auth_mechanisms_list);
335 auth_mechanisms[i] = _dbus_strdup (link->data);
336 if (auth_mechanisms[i] == NULL)
341 link = _dbus_list_get_next_link (auth_mechanisms_list, link);
346 auth_mechanisms = NULL;
349 /* Listen on our addresses */
351 addresses = bus_config_parser_get_addresses (parser);
353 link = _dbus_list_get_first_link (addresses);
358 server = dbus_server_listen (link->data, error);
361 _DBUS_ASSERT_ERROR_IS_SET (error);
364 else if (!setup_server (context, server, auth_mechanisms, error))
366 _DBUS_ASSERT_ERROR_IS_SET (error);
370 if (!_dbus_list_append (&context->servers, server))
376 link = _dbus_list_get_next_link (addresses, link);
379 /* note that type may be NULL */
380 context->type = _dbus_strdup (bus_config_parser_get_type (parser));
381 if (bus_config_parser_get_type (parser) != NULL && context->type == NULL)
387 user = bus_config_parser_get_user (parser);
390 context->user = _dbus_strdup (user);
391 if (context->user == NULL)
398 context->fork = bus_config_parser_get_fork (parser);
399 context->syslog = bus_config_parser_get_syslog (parser);
400 context->keep_umask = bus_config_parser_get_keep_umask (parser);
401 context->allow_anonymous = bus_config_parser_get_allow_anonymous (parser);
403 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
407 dbus_free_string_array (auth_mechanisms);
411 /* This code gets executed every time the config files
412 * are parsed: both during BusContext construction
413 * and on reloads. This function is slightly screwy
414 * since it can do a "half reload" in out-of-memory
415 * situations. Realistically, unlikely to ever matter.
418 process_config_every_time (BusContext *context,
419 BusConfigParser *parser,
420 dbus_bool_t is_reload,
423 DBusString full_address;
426 BusActivation *new_activation;
428 const char *servicehelper;
433 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
438 if (!_dbus_string_init (&full_address))
444 /* get our limits and timeout lengths */
445 bus_config_parser_get_limits (parser, &context->limits);
447 context->policy = bus_config_parser_steal_policy (parser);
448 _dbus_assert (context->policy != NULL);
450 /* We have to build the address backward, so that
451 * <listen> later in the config file have priority
453 link = _dbus_list_get_last_link (&context->servers);
456 addr = dbus_server_get_address (link->data);
463 if (_dbus_string_get_length (&full_address) > 0)
465 if (!_dbus_string_append (&full_address, ";"))
472 if (!_dbus_string_append (&full_address, addr))
481 link = _dbus_list_get_prev_link (&context->servers, link);
485 dbus_free (context->address);
487 if (!_dbus_string_copy_data (&full_address, &context->address))
493 /* get the service directories */
494 dirs = bus_config_parser_get_service_dirs (parser);
496 /* and the service helper */
497 servicehelper = bus_config_parser_get_servicehelper (parser);
499 s = _dbus_strdup(servicehelper);
500 if (s == NULL && servicehelper != NULL)
507 dbus_free(context->servicehelper);
508 context->servicehelper = s;
511 /* Create activation subsystem */
512 new_activation = bus_activation_new (context, &full_address,
514 if (new_activation == NULL)
516 _DBUS_ASSERT_ERROR_IS_SET (error);
521 bus_activation_unref (context->activation);
523 context->activation = new_activation;
525 /* Drop existing conf-dir watches (if applicable) */
528 bus_drop_all_directory_watches ();
530 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
534 _dbus_string_free (&full_address);
543 process_config_postinit (BusContext *context,
544 BusConfigParser *parser,
547 DBusHashTable *service_context_table;
549 service_context_table = bus_config_parser_steal_service_context_table (parser);
550 if (!bus_registry_set_service_context_table (context->registry,
551 service_context_table))
557 _dbus_hash_table_unref (service_context_table);
559 /* Watch all conf directories */
560 _dbus_list_foreach (bus_config_parser_get_conf_dirs (parser),
561 (DBusForeachFunction) bus_watch_directory,
568 bus_context_new (const DBusString *config_file,
569 ForceForkSetting force_fork,
570 DBusPipe *print_addr_pipe,
571 DBusPipe *print_pid_pipe,
575 BusConfigParser *parser;
577 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
582 if (!dbus_server_allocate_data_slot (&server_data_slot))
588 context = dbus_new0 (BusContext, 1);
594 context->refcount = 1;
596 _dbus_generate_uuid (&context->uuid);
598 if (!_dbus_string_copy_data (config_file, &context->config_file))
604 context->loop = _dbus_loop_new ();
605 if (context->loop == NULL)
611 context->registry = bus_registry_new (context);
612 if (context->registry == NULL)
618 parser = bus_config_load (config_file, TRUE, NULL, error);
621 _DBUS_ASSERT_ERROR_IS_SET (error);
625 if (!process_config_first_time_only (context, parser, error))
627 _DBUS_ASSERT_ERROR_IS_SET (error);
630 if (!process_config_every_time (context, parser, FALSE, error))
632 _DBUS_ASSERT_ERROR_IS_SET (error);
636 /* we need another ref of the server data slot for the context
639 if (!dbus_server_allocate_data_slot (&server_data_slot))
640 _dbus_assert_not_reached ("second ref of server data slot failed");
642 /* Note that we don't know whether the print_addr_pipe is
643 * one of the sockets we're using to listen on, or some
644 * other random thing. But I think the answer is "don't do
647 if (print_addr_pipe != NULL && _dbus_pipe_is_valid (print_addr_pipe))
650 const char *a = bus_context_get_address (context);
653 _dbus_assert (a != NULL);
654 if (!_dbus_string_init (&addr))
660 if (!_dbus_string_append (&addr, a) ||
661 !_dbus_string_append (&addr, "\n"))
663 _dbus_string_free (&addr);
668 bytes = _dbus_string_get_length (&addr);
669 if (_dbus_pipe_write (print_addr_pipe, &addr, 0, bytes, error) != bytes)
671 /* pipe write returns an error on failure but not short write */
672 if (error != NULL && !dbus_error_is_set (error))
674 dbus_set_error (error, DBUS_ERROR_FAILED,
675 "Printing message bus address: did not write all bytes\n");
677 _dbus_string_free (&addr);
681 if (!_dbus_pipe_is_stdout_or_stderr (print_addr_pipe))
682 _dbus_pipe_close (print_addr_pipe, NULL);
684 _dbus_string_free (&addr);
687 context->connections = bus_connections_new (context);
688 if (context->connections == NULL)
694 context->matchmaker = bus_matchmaker_new ();
695 if (context->matchmaker == NULL)
701 /* check user before we fork */
702 if (context->user != NULL)
704 if (!_dbus_verify_daemon_user (context->user))
706 dbus_set_error (error, DBUS_ERROR_FAILED,
707 "Could not get UID and GID for username \"%s\"",
713 /* Now become a daemon if appropriate and write out pid file in any case */
717 if (context->pidfile)
718 _dbus_string_init_const (&u, context->pidfile);
720 if ((force_fork != FORK_NEVER && context->fork) || force_fork == FORK_ALWAYS)
722 _dbus_verbose ("Forking and becoming daemon\n");
724 if (!_dbus_become_daemon (context->pidfile ? &u : NULL,
727 context->keep_umask))
729 _DBUS_ASSERT_ERROR_IS_SET (error);
735 _dbus_verbose ("Fork not requested\n");
737 /* Need to write PID file and to PID pipe for ourselves,
738 * not for the child process. This is a no-op if the pidfile
739 * is NULL and print_pid_pipe is NULL.
741 if (!_dbus_write_pid_to_file_and_pipe (context->pidfile ? &u : NULL,
746 _DBUS_ASSERT_ERROR_IS_SET (error);
752 if (print_pid_pipe && _dbus_pipe_is_valid (print_pid_pipe) &&
753 !_dbus_pipe_is_stdout_or_stderr (print_pid_pipe))
754 _dbus_pipe_close (print_pid_pipe, NULL);
756 if (!bus_selinux_full_init ())
758 _dbus_warn ("SELinux initialization failed\n");
761 if (!process_config_postinit (context, parser, error))
763 _DBUS_ASSERT_ERROR_IS_SET (error);
769 bus_config_parser_unref (parser);
773 /* Here we change our credentials if required,
774 * as soon as we've set up our sockets and pidfile
776 if (context->user != NULL)
778 if (!_dbus_change_to_daemon_user (context->user, error))
780 _DBUS_ASSERT_ERROR_IS_SET (error);
785 /* FIXME - why not just put this in full_init() below? */
786 bus_selinux_audit_init ();
790 dbus_server_free_data_slot (&server_data_slot);
796 bus_config_parser_unref (parser);
798 bus_context_unref (context);
800 if (server_data_slot >= 0)
801 dbus_server_free_data_slot (&server_data_slot);
807 bus_context_get_id (BusContext *context,
810 return _dbus_uuid_encode (&context->uuid, uuid);
814 bus_context_reload_config (BusContext *context,
817 BusConfigParser *parser;
818 DBusString config_file;
821 /* Flush the user database cache */
822 _dbus_flush_caches ();
825 _dbus_string_init_const (&config_file, context->config_file);
826 parser = bus_config_load (&config_file, TRUE, NULL, error);
829 _DBUS_ASSERT_ERROR_IS_SET (error);
833 if (!process_config_every_time (context, parser, TRUE, error))
835 _DBUS_ASSERT_ERROR_IS_SET (error);
838 if (!process_config_postinit (context, parser, error))
840 _DBUS_ASSERT_ERROR_IS_SET (error);
845 bus_context_log_info (context, "Reloaded configuration");
848 bus_context_log_info (context, "Unable to reload configuration: %s", error->message);
850 bus_config_parser_unref (parser);
855 shutdown_server (BusContext *context,
858 if (server == NULL ||
859 !dbus_server_get_is_connected (server))
862 if (!dbus_server_set_watch_functions (server,
866 _dbus_assert_not_reached ("setting watch functions to NULL failed");
868 if (!dbus_server_set_timeout_functions (server,
872 _dbus_assert_not_reached ("setting timeout functions to NULL failed");
874 dbus_server_disconnect (server);
878 bus_context_shutdown (BusContext *context)
882 link = _dbus_list_get_first_link (&context->servers);
885 shutdown_server (context, link->data);
887 link = _dbus_list_get_next_link (&context->servers, link);
892 bus_context_ref (BusContext *context)
894 _dbus_assert (context->refcount > 0);
895 context->refcount += 1;
901 bus_context_unref (BusContext *context)
903 _dbus_assert (context->refcount > 0);
904 context->refcount -= 1;
906 if (context->refcount == 0)
910 _dbus_verbose ("Finalizing bus context %p\n", context);
912 bus_context_shutdown (context);
914 if (context->connections)
916 bus_connections_unref (context->connections);
917 context->connections = NULL;
920 if (context->registry)
922 bus_registry_unref (context->registry);
923 context->registry = NULL;
926 if (context->activation)
928 bus_activation_unref (context->activation);
929 context->activation = NULL;
932 link = _dbus_list_get_first_link (&context->servers);
935 dbus_server_unref (link->data);
937 link = _dbus_list_get_next_link (&context->servers, link);
939 _dbus_list_clear (&context->servers);
943 bus_policy_unref (context->policy);
944 context->policy = NULL;
949 _dbus_loop_unref (context->loop);
950 context->loop = NULL;
953 if (context->matchmaker)
955 bus_matchmaker_unref (context->matchmaker);
956 context->matchmaker = NULL;
959 dbus_free (context->config_file);
960 dbus_free (context->type);
961 dbus_free (context->address);
962 dbus_free (context->user);
963 dbus_free (context->servicehelper);
965 if (context->pidfile)
968 _dbus_string_init_const (&u, context->pidfile);
970 /* Deliberately ignore errors here, since there's not much
971 * we can do about it, and we're exiting anyways.
973 _dbus_delete_file (&u, NULL);
975 dbus_free (context->pidfile);
979 dbus_server_free_data_slot (&server_data_slot);
983 /* type may be NULL */
985 bus_context_get_type (BusContext *context)
987 return context->type;
991 bus_context_get_address (BusContext *context)
993 return context->address;
997 bus_context_get_servicehelper (BusContext *context)
999 return context->servicehelper;
1003 bus_context_get_registry (BusContext *context)
1005 return context->registry;
1009 bus_context_get_connections (BusContext *context)
1011 return context->connections;
1015 bus_context_get_activation (BusContext *context)
1017 return context->activation;
1021 bus_context_get_matchmaker (BusContext *context)
1023 return context->matchmaker;
1027 bus_context_get_loop (BusContext *context)
1029 return context->loop;
1033 bus_context_allow_unix_user (BusContext *context,
1036 return bus_policy_allow_unix_user (context->policy,
1040 /* For now this is never actually called because the default
1041 * DBusConnection behavior of 'same user that owns the bus can connect'
1042 * is all it would do.
1045 bus_context_allow_windows_user (BusContext *context,
1046 const char *windows_sid)
1048 return bus_policy_allow_windows_user (context->policy,
1053 bus_context_get_policy (BusContext *context)
1055 return context->policy;
1059 bus_context_create_client_policy (BusContext *context,
1060 DBusConnection *connection,
1063 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1064 return bus_policy_create_client_policy (context->policy, connection,
1069 bus_context_get_activation_timeout (BusContext *context)
1072 return context->limits.activation_timeout;
1076 bus_context_get_auth_timeout (BusContext *context)
1078 return context->limits.auth_timeout;
1082 bus_context_get_max_completed_connections (BusContext *context)
1084 return context->limits.max_completed_connections;
1088 bus_context_get_max_incomplete_connections (BusContext *context)
1090 return context->limits.max_incomplete_connections;
1094 bus_context_get_max_connections_per_user (BusContext *context)
1096 return context->limits.max_connections_per_user;
1100 bus_context_get_max_pending_activations (BusContext *context)
1102 return context->limits.max_pending_activations;
1106 bus_context_get_max_services_per_connection (BusContext *context)
1108 return context->limits.max_services_per_connection;
1112 bus_context_get_max_match_rules_per_connection (BusContext *context)
1114 return context->limits.max_match_rules_per_connection;
1118 bus_context_get_max_replies_per_connection (BusContext *context)
1120 return context->limits.max_replies_per_connection;
1124 bus_context_get_reply_timeout (BusContext *context)
1126 return context->limits.reply_timeout;
1130 bus_context_log_info (BusContext *context, const char *msg, ...)
1134 va_start (args, msg);
1136 if (context->syslog)
1137 _dbus_log_info (msg, args);
1143 bus_context_log_security (BusContext *context, const char *msg, ...)
1147 va_start (args, msg);
1149 if (context->syslog)
1150 _dbus_log_security (msg, args);
1156 * addressed_recipient is the recipient specified in the message.
1158 * proposed_recipient is the recipient we're considering sending
1159 * to right this second, and may be an eavesdropper.
1161 * sender is the sender of the message.
1163 * NULL for proposed_recipient or sender definitely means the bus driver.
1165 * NULL for addressed_recipient may mean the bus driver, or may mean
1166 * no destination was specified in the message (e.g. a signal).
1169 bus_context_check_security_policy (BusContext *context,
1170 BusTransaction *transaction,
1171 DBusConnection *sender,
1172 DBusConnection *addressed_recipient,
1173 DBusConnection *proposed_recipient,
1174 DBusMessage *message,
1178 BusClientPolicy *sender_policy;
1179 BusClientPolicy *recipient_policy;
1180 dbus_int32_t toggles;
1183 dbus_bool_t requested_reply;
1184 const char *sender_name;
1185 const char *sender_loginfo;
1186 const char *proposed_recipient_loginfo;
1188 type = dbus_message_get_type (message);
1189 dest = dbus_message_get_destination (message);
1191 /* dispatch.c was supposed to ensure these invariants */
1192 _dbus_assert (dest != NULL ||
1193 type == DBUS_MESSAGE_TYPE_SIGNAL ||
1194 (sender == NULL && !bus_connection_is_active (proposed_recipient)));
1195 _dbus_assert (type == DBUS_MESSAGE_TYPE_SIGNAL ||
1196 addressed_recipient != NULL ||
1197 strcmp (dest, DBUS_SERVICE_DBUS) == 0);
1199 /* Used in logging below */
1202 sender_name = bus_connection_get_name (sender);
1203 sender_loginfo = bus_connection_get_loginfo (sender);
1208 sender_loginfo = "(bus)";
1211 if (proposed_recipient != NULL)
1212 proposed_recipient_loginfo = bus_connection_get_loginfo (proposed_recipient);
1214 proposed_recipient_loginfo = "bus";
1218 case DBUS_MESSAGE_TYPE_METHOD_CALL:
1219 case DBUS_MESSAGE_TYPE_SIGNAL:
1220 case DBUS_MESSAGE_TYPE_METHOD_RETURN:
1221 case DBUS_MESSAGE_TYPE_ERROR:
1225 _dbus_verbose ("security check disallowing message of unknown type %d\n",
1228 dbus_set_error (error, DBUS_ERROR_ACCESS_DENIED,
1229 "Message bus will not accept messages of unknown type\n");
1234 requested_reply = FALSE;
1238 /* First verify the SELinux access controls. If allowed then
1239 * go on with the standard checks.
1241 if (!bus_selinux_allows_send (sender, proposed_recipient,
1242 dbus_message_type_to_string (dbus_message_get_type (message)),
1243 dbus_message_get_interface (message),
1244 dbus_message_get_member (message),
1245 dbus_message_get_error_name (message),
1246 dest ? dest : DBUS_SERVICE_DBUS, error))
1248 if (error != NULL && !dbus_error_is_set (error))
1250 dbus_set_error (error, DBUS_ERROR_ACCESS_DENIED,
1251 "An SELinux policy prevents this sender "
1252 "from sending this message to this recipient "
1253 "(rejected message had sender \"%s\" interface \"%s\" "
1254 "member \"%s\" error name \"%s\" destination \"%s\")",
1255 sender_name ? sender_name : "(unset)",
1256 dbus_message_get_interface (message) ?
1257 dbus_message_get_interface (message) : "(unset)",
1258 dbus_message_get_member (message) ?
1259 dbus_message_get_member (message) : "(unset)",
1260 dbus_message_get_error_name (message) ?
1261 dbus_message_get_error_name (message) : "(unset)",
1262 dest ? dest : DBUS_SERVICE_DBUS);
1263 _dbus_verbose ("SELinux security check denying send to service\n");
1269 if (bus_connection_is_active (sender))
1271 sender_policy = bus_connection_get_policy (sender);
1272 _dbus_assert (sender_policy != NULL);
1274 /* Fill in requested_reply variable with TRUE if this is a
1275 * reply and the reply was pending.
1277 if (dbus_message_get_reply_serial (message) != 0)
1279 if (proposed_recipient != NULL /* not to the bus driver */ &&
1280 addressed_recipient == proposed_recipient /* not eavesdropping */)
1284 dbus_error_init (&error2);
1285 requested_reply = bus_connections_check_reply (bus_connection_get_connections (sender),
1287 sender, addressed_recipient, message,
1289 if (dbus_error_is_set (&error2))
1291 dbus_move_error (&error2, error);
1299 /* Policy for inactive connections is that they can only send
1300 * the hello message to the bus driver
1302 if (proposed_recipient == NULL &&
1303 dbus_message_is_method_call (message,
1304 DBUS_INTERFACE_DBUS,
1307 _dbus_verbose ("security check allowing %s message\n",
1313 _dbus_verbose ("security check disallowing non-%s message\n",
1316 dbus_set_error (error, DBUS_ERROR_ACCESS_DENIED,
1317 "Client tried to send a message other than %s without being registered",
1326 sender_policy = NULL;
1328 /* If the sender is the bus driver, we assume any reply was a
1329 * requested reply as bus driver won't send bogus ones
1331 if (addressed_recipient == proposed_recipient /* not eavesdropping */ &&
1332 dbus_message_get_reply_serial (message) != 0)
1333 requested_reply = TRUE;
1336 _dbus_assert ((sender != NULL && sender_policy != NULL) ||
1337 (sender == NULL && sender_policy == NULL));
1339 if (proposed_recipient != NULL)
1341 /* only the bus driver can send to an inactive recipient (as it
1342 * owns no services, so other apps can't address it). Inactive
1343 * recipients can receive any message.
1345 if (bus_connection_is_active (proposed_recipient))
1347 recipient_policy = bus_connection_get_policy (proposed_recipient);
1348 _dbus_assert (recipient_policy != NULL);
1350 else if (sender == NULL)
1352 _dbus_verbose ("security check using NULL recipient policy for message from bus\n");
1353 recipient_policy = NULL;
1357 _dbus_assert_not_reached ("a message was somehow sent to an inactive recipient from a source other than the message bus\n");
1358 recipient_policy = NULL;
1362 recipient_policy = NULL;
1364 _dbus_assert ((proposed_recipient != NULL && recipient_policy != NULL) ||
1365 (proposed_recipient != NULL && sender == NULL && recipient_policy == NULL) ||
1366 (proposed_recipient == NULL && recipient_policy == NULL));
1369 if (sender_policy &&
1370 !bus_client_policy_check_can_send (sender_policy,
1374 message, &toggles, &log))
1376 const char *msg = "Rejected send message, %d matched rules; "
1377 "type=\"%s\", sender=\"%s\" (%s) interface=\"%s\" member=\"%s\" error name=\"%s\" requested_reply=%d destination=\"%s\" (%s))";
1379 dbus_set_error (error, DBUS_ERROR_ACCESS_DENIED, msg,
1381 dbus_message_type_to_string (dbus_message_get_type (message)),
1382 sender_name ? sender_name : "(unset)",
1384 dbus_message_get_interface (message) ?
1385 dbus_message_get_interface (message) : "(unset)",
1386 dbus_message_get_member (message) ?
1387 dbus_message_get_member (message) : "(unset)",
1388 dbus_message_get_error_name (message) ?
1389 dbus_message_get_error_name (message) : "(unset)",
1391 dest ? dest : DBUS_SERVICE_DBUS,
1392 proposed_recipient_loginfo);
1393 /* Needs to be duplicated to avoid calling malloc and having to handle OOM */
1394 if (addressed_recipient == proposed_recipient)
1395 bus_context_log_security (context, msg,
1397 dbus_message_type_to_string (dbus_message_get_type (message)),
1398 sender_name ? sender_name : "(unset)",
1400 dbus_message_get_interface (message) ?
1401 dbus_message_get_interface (message) : "(unset)",
1402 dbus_message_get_member (message) ?
1403 dbus_message_get_member (message) : "(unset)",
1404 dbus_message_get_error_name (message) ?
1405 dbus_message_get_error_name (message) : "(unset)",
1407 dest ? dest : DBUS_SERVICE_DBUS,
1408 proposed_recipient_loginfo);
1409 _dbus_verbose ("security policy disallowing message due to sender policy\n");
1414 bus_context_log_security (context,
1415 "Would reject message, %d matched rules; "
1416 "type=\"%s\", sender=\"%s\" (%s) interface=\"%s\" member=\"%s\" error name=\"%s\" requested_reply=%d destination=\"%s\" (%s))",
1418 dbus_message_type_to_string (dbus_message_get_type (message)),
1419 sender_name ? sender_name : "(unset)",
1421 dbus_message_get_interface (message) ?
1422 dbus_message_get_interface (message) : "(unset)",
1423 dbus_message_get_member (message) ?
1424 dbus_message_get_member (message) : "(unset)",
1425 dbus_message_get_error_name (message) ?
1426 dbus_message_get_error_name (message) : "(unset)",
1428 dest ? dest : DBUS_SERVICE_DBUS,
1429 proposed_recipient_loginfo);
1431 if (recipient_policy &&
1432 !bus_client_policy_check_can_receive (recipient_policy,
1436 addressed_recipient, proposed_recipient,
1439 const char *msg = "Rejected receive message, %d matched rules; "
1440 "type=\"%s\" sender=\"%s\" (%s) interface=\"%s\" member=\"%s\" error name=\"%s\" reply serial=%u requested_reply=%d destination=\"%s\" (%s))";
1442 dbus_set_error (error, DBUS_ERROR_ACCESS_DENIED, msg,
1444 dbus_message_type_to_string (dbus_message_get_type (message)),
1445 sender_name ? sender_name : "(unset)",
1447 dbus_message_get_interface (message) ?
1448 dbus_message_get_interface (message) : "(unset)",
1449 dbus_message_get_member (message) ?
1450 dbus_message_get_member (message) : "(unset)",
1451 dbus_message_get_error_name (message) ?
1452 dbus_message_get_error_name (message) : "(unset)",
1453 dbus_message_get_reply_serial (message),
1455 dest ? dest : DBUS_SERVICE_DBUS,
1456 proposed_recipient_loginfo);
1457 /* Needs to be duplicated to avoid calling malloc and having to handle OOM */
1458 if (addressed_recipient == proposed_recipient)
1459 bus_context_log_security (context, msg,
1461 dbus_message_type_to_string (dbus_message_get_type (message)),
1462 sender_name ? sender_name : "(unset)",
1464 dbus_message_get_interface (message) ?
1465 dbus_message_get_interface (message) : "(unset)",
1466 dbus_message_get_member (message) ?
1467 dbus_message_get_member (message) : "(unset)",
1468 dbus_message_get_error_name (message) ?
1469 dbus_message_get_error_name (message) : "(unset)",
1470 dbus_message_get_reply_serial (message),
1472 dest ? dest : DBUS_SERVICE_DBUS,
1473 proposed_recipient_loginfo);
1474 _dbus_verbose ("security policy disallowing message due to recipient policy\n");
1478 /* See if limits on size have been exceeded */
1479 if (proposed_recipient &&
1480 ((dbus_connection_get_outgoing_size (proposed_recipient) > context->limits.max_outgoing_bytes) ||
1481 (dbus_connection_get_outgoing_unix_fds (proposed_recipient) > context->limits.max_outgoing_unix_fds)))
1483 dbus_set_error (error, DBUS_ERROR_LIMITS_EXCEEDED,
1484 "The destination service \"%s\" has a full message queue",
1485 dest ? dest : (proposed_recipient ?
1486 bus_connection_get_name (proposed_recipient) :
1487 DBUS_SERVICE_DBUS));
1488 _dbus_verbose ("security policy disallowing message due to full message queue\n");
1492 /* Record that we will allow a reply here in the future (don't
1493 * bother if the recipient is the bus or this is an eavesdropping
1494 * connection). Only the addressed recipient may reply.
1496 if (type == DBUS_MESSAGE_TYPE_METHOD_CALL &&
1498 addressed_recipient &&
1499 addressed_recipient == proposed_recipient && /* not eavesdropping */
1500 !bus_connections_expect_reply (bus_connection_get_connections (sender),
1502 sender, addressed_recipient,
1505 _dbus_verbose ("Failed to record reply expectation or problem with the message expecting a reply\n");
1509 _dbus_verbose ("security policy allowing message\n");