//InitSession method is the first callable. It permits to init a session (Session or System) over the bus and request a name on it.
//Parameters :
// s -> dbus.SessionType : equal to SESSION or SYSTEM
// n -> string : name you want to request over the bus (or "")
func (d *Abstraction) InitSession(s SessionType, n string) error {
var err error
var conn *dbus.Conn
if d.Conn != nil {
return errors.New("[DBUS ABSTRACTION ERROR - initSession - Session already initialized]")
}
if s == SESSION {
conn, err = dbus.SessionBus()
} else {
conn, err = dbus.SystemBus()
}
if err != nil {
return err
}
if n != "" {
reply, err := conn.RequestName(n, dbus.NameFlagDoNotQueue)
if err != nil {
return err
}
if reply != dbus.RequestNameReplyPrimaryOwner {
return errors.New("[DBUS ABSTRACTION ERROR - initSession - name already taken]")
}
}
d.Conn = conn
d.Sigmap = make(map[string]chan *AbsSignal)
d.Recv = make(chan *dbus.Signal, 1024)
go d.signalsHandler()
return nil
}
// New returns a new Properties structure that manages the given properties.
// The key for the first-level map of props is the name of the interface; the
// second-level key is the name of the property. The returned structure will be
// exported as org.freedesktop.DBus.Properties on path.
func New(conn *dbus.Conn, path dbus.ObjectPath, props map[string]map[string]*Prop) *Properties {
p := &Properties{m: props, conn: conn, path: path}
conn.Export(p, path, "org.freedesktop.DBus.Properties")
return p
}