/* SPDX-License-Identifier: LGPL-2.1+ */
/***
- This file is part of systemd.
-
Copyright 2013 Lennart Poettering
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include "bus-internal.h"
int r;
assert_return(bus, -EINVAL);
+ assert_return(bus = bus_resolve(bus), -ENOPKG);
assert_return(!bus_pid_changed(bus), -ECHILD);
if (!BUS_IS_OPEN(bus->state))
int r;
assert_return(bus, -EINVAL);
+ assert_return(bus = bus_resolve(bus), -ENOPKG);
assert_return(!bus_pid_changed(bus), -ECHILD);
if (!BUS_IS_OPEN(bus->state))
return 0;
}
+
+#define make_expression(sender, path, interface, member) \
+ strjoina( \
+ "type='signal'", \
+ sender ? ",sender='" : "", \
+ sender ?: "", \
+ sender ? "'" : "", \
+ path ? ",path='" : "", \
+ path ?: "", \
+ path ? "'" : "", \
+ interface ? ",interface='" : "", \
+ interface ?: "", \
+ interface ? "'" : "", \
+ member ? ",member='" : "", \
+ member ?: "", \
+ member ? "'" : "" \
+ )
+
+_public_ int sd_bus_match_signal(
+ sd_bus *bus,
+ sd_bus_slot **ret,
+ const char *sender,
+ const char *path,
+ const char *interface,
+ const char *member,
+ sd_bus_message_handler_t callback,
+ void *userdata) {
+
+ const char *expression;
+
+ assert_return(bus, -EINVAL);
+ assert_return(bus = bus_resolve(bus), -ENOPKG);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+ assert_return(!sender || service_name_is_valid(sender), -EINVAL);
+ assert_return(!path || object_path_is_valid(path), -EINVAL);
+ assert_return(!interface || interface_name_is_valid(interface), -EINVAL);
+ assert_return(!member || member_name_is_valid(member), -EINVAL);
+
+ expression = make_expression(sender, path, interface, member);
+
+ return sd_bus_add_match(bus, ret, expression, callback, userdata);
+}
+
+_public_ int sd_bus_match_signal_async(
+ sd_bus *bus,
+ sd_bus_slot **ret,
+ const char *sender,
+ const char *path,
+ const char *interface,
+ const char *member,
+ sd_bus_message_handler_t callback,
+ sd_bus_message_handler_t install_callback,
+ void *userdata) {
+
+ const char *expression;
+
+ assert_return(bus, -EINVAL);
+ assert_return(bus = bus_resolve(bus), -ENOPKG);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+ assert_return(!sender || service_name_is_valid(sender), -EINVAL);
+ assert_return(!path || object_path_is_valid(path), -EINVAL);
+ assert_return(!interface || interface_name_is_valid(interface), -EINVAL);
+ assert_return(!member || member_name_is_valid(member), -EINVAL);
+
+ expression = make_expression(sender, path, interface, member);
+
+ return sd_bus_add_match_async(bus, ret, expression, callback, install_callback, userdata);
+}