| /* |
| Copyright 2014 CoreOS Inc. |
| |
| Licensed under the Apache License, Version 2.0 (the "License"); |
| you may not use this file except in compliance with the License. |
| You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| */ |
| |
| // Integration with the systemd logind API. See http://www.freedesktop.org/wiki/Software/systemd/logind/ |
| package login1 |
| |
| import ( |
| "os" |
| "strconv" |
| |
| "github.com/godbus/dbus" |
| ) |
| |
| const ( |
| dbusInterface = "org.freedesktop.login1.Manager" |
| dbusPath = "/org/freedesktop/login1" |
| ) |
| |
| // Conn is a connection to systemds dbus endpoint. |
| type Conn struct { |
| conn *dbus.Conn |
| object *dbus.Object |
| } |
| |
| // New() establishes a connection to the system bus and authenticates. |
| func New() (*Conn, error) { |
| c := new(Conn) |
| |
| if err := c.initConnection(); err != nil { |
| return nil, err |
| } |
| |
| return c, nil |
| } |
| |
| func (c *Conn) initConnection() error { |
| var err error |
| c.conn, err = dbus.SystemBusPrivate() |
| if err != nil { |
| return err |
| } |
| |
| // Only use EXTERNAL method, and hardcode the uid (not username) |
| // to avoid a username lookup (which requires a dynamically linked |
| // libc) |
| methods := []dbus.Auth{dbus.AuthExternal(strconv.Itoa(os.Getuid()))} |
| |
| err = c.conn.Auth(methods) |
| if err != nil { |
| c.conn.Close() |
| return err |
| } |
| |
| err = c.conn.Hello() |
| if err != nil { |
| c.conn.Close() |
| return err |
| } |
| |
| c.object = c.conn.Object("org.freedesktop.login1", dbus.ObjectPath(dbusPath)) |
| |
| return nil |
| } |
| |
| // Reboot asks logind for a reboot optionally asking for auth. |
| func (c *Conn) Reboot(askForAuth bool) { |
| c.object.Call(dbusInterface+".Reboot", 0, askForAuth) |
| } |