class DBus::ASessionBus

D-Bus session bus class

The session bus is a session specific bus (mostly for desktop use).

Use SessionBus, the non-singleton ASessionBus is for the test suite.

Public Class Methods

new() click to toggle source

Get the the default session bus.

Calls superclass method DBus::Connection.new
# File lib/dbus/bus.rb, line 599
def initialize
  super(ENV["DBUS_SESSION_BUS_ADDRESS"] || address_from_file || "launchd:env=DBUS_LAUNCHD_SESSION_BUS_SOCKET")
  send_hello
end

Public Instance Methods

address_from_file() click to toggle source
# File lib/dbus/bus.rb, line 604
def address_from_file
  # systemd uses /etc/machine-id
  # traditional dbus uses /var/lib/dbus/machine-id
  machine_id_path = Dir['{/etc,/var/lib/dbus}/machine-id'].first
  return nil unless machine_id_path
  machine_id = File.read(machine_id_path).chomp

  display = ENV["DISPLAY"][/:(\d+)\.?/, 1]

  bus_file_path = File.join(ENV["HOME"], "/.dbus/session-bus/#{machine_id}-#{display}")
  return nil unless File.exists?(bus_file_path)

  File.open(bus_file_path).each_line do |line|
    if line =~ /^DBUS_SESSION_BUS_ADDRESS=(.*)/
      return $1
    end
  end
end