Console user security policy

* bus/config-parser.c:
(struct PolicyType): Add POLICY_CONSOLE
(struct Element.d.policy): s/gid_or_uid/gid_uid_or_at_console
(start_busconfig_child): Sets up console element when
<policy at_console=""> is encountered in a policy file
(append_rule_from_element): Convert console elements to console
rules.

* bus/policy.c:
(bus_policy_create_client_policy): Add console rules to the client
policy based on if the client is at the console
(bus_policy_append_console_rule): New function for adding a
console rule to a policy
(bus_policy_merge): Handle console rule merging

* dbus/dbus-sysdeps.h: Added the DBUS_CONSOLE_DIR constant
where we check for console user files

* dbus/dbus-sysdeps.c:
(_dbus_file_exists): New function which checks if the given
file exists
(_dbus_user_at_console): New function which does the system
specific process of checking if the user is at the console

* dbus/dbus-userdb.c:
(_dbus_is_console_user): New function converts a UID to user name
and then calls the system specific _dbus_user_at_console to
see if the user is at the console and therefor a console user

1 files changed, 2 insertions, 1 deletions

diff --git a/dbus/dbus-userdb.h b/dbus/dbus-userdb.h
index 683b0b76..51f2fa7c 100644
--- a/dbus/dbus-userdb.h
+++ b/dbus/dbus-userdb.h
@@ -56,7 +56,6 @@ dbus_bool_t       _dbus_user_database_get_groupname (DBusUserDatabase     *db,
                                                      DBusError            *error);
 
 
-
 DBusUserDatabase* _dbus_user_database_get_system    (void);
 void              _dbus_user_database_lock_system   (void);
 void              _dbus_user_database_unlock_system (void);
@@ -75,6 +74,8 @@ dbus_bool_t _dbus_credentials_from_username     (const DBusString  *username,
                                                  DBusCredentials   *credentials);
 dbus_bool_t _dbus_credentials_from_uid          (dbus_uid_t         user_id,
                                                  DBusCredentials   *credentials);
+dbus_bool_t _dbus_is_console_user               (dbus_uid_t         uid,
+                                                 DBusError         *error);
 
 
 DBUS_END_DECLS;