+static inline const char *
+nonnull (const char *maybe_null,
+ const char *if_null)
+{
+ return (maybe_null ? maybe_null : if_null);
+}
+
+/*
+ * Log something about a message, usually that it was rejected.
+ */
+static void
+complain_about_message (BusContext *context,
+ const char *complaint,
+ int matched_rules,
+ DBusMessage *message,
+ DBusConnection *sender,
+ DBusConnection *proposed_recipient,
+ dbus_bool_t requested_reply,
+ dbus_bool_t log,
+ DBusError *error)
+{
+ DBusError stack_error = DBUS_ERROR_INIT;
+ const char *sender_name;
+ const char *sender_loginfo;
+ const char *proposed_recipient_loginfo;
+
+ if (error == NULL && !(context->syslog && log))
+ return;
+
+ if (sender != NULL)
+ {
+ sender_name = bus_connection_get_name (sender);
+ sender_loginfo = bus_connection_get_loginfo (sender);
+ }
+ else
+ {
+ sender_name = "(unset)";
+ sender_loginfo = "(bus)";
+ }
+
+ if (proposed_recipient != NULL)
+ proposed_recipient_loginfo = bus_connection_get_loginfo (proposed_recipient);
+ else
+ proposed_recipient_loginfo = "bus";
+
+ dbus_set_error (&stack_error, DBUS_ERROR_ACCESS_DENIED,
+ "%s, %d matched rules; type=\"%s\", sender=\"%s\" (%s) "
+ "interface=\"%s\" member=\"%s\" error name=\"%s\" "
+ "requested_reply=\"%d\" destination=\"%s\" (%s)",
+ complaint,
+ matched_rules,
+ dbus_message_type_to_string (dbus_message_get_type (message)),
+ sender_name,
+ sender_loginfo,
+ nonnull (dbus_message_get_interface (message), "(unset)"),
+ nonnull (dbus_message_get_member (message), "(unset)"),
+ nonnull (dbus_message_get_error_name (message), "(unset)"),
+ requested_reply,
+ nonnull (dbus_message_get_destination (message), DBUS_SERVICE_DBUS),
+ proposed_recipient_loginfo);
+
+ /* If we hit OOM while setting the error, this will syslog "out of memory"
+ * which is itself an indication that something is seriously wrong */
+ if (log)
+ bus_context_log (context, DBUS_SYSTEM_LOG_SECURITY, "%s",
+ stack_error.message);
+
+ dbus_move_error (&stack_error, error);
+}
+