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package systemd
import (
"fmt"
"os"
"path/filepath"
"strconv"
"github.com/containers/podman/v3/pkg/rootless"
"github.com/coreos/go-systemd/v22/dbus"
godbus "github.com/godbus/dbus/v5"
)
func dbusAuthRootlessConnection(createBus func(opts ...godbus.ConnOption) (*godbus.Conn, error)) (*godbus.Conn, error) {
conn, err := createBus()
if err != nil {
return nil, err
}
methods := []godbus.Auth{godbus.AuthExternal(strconv.Itoa(rootless.GetRootlessUID()))}
err = conn.Auth(methods)
if err != nil {
conn.Close()
return nil, err
}
return conn, nil
}
func newRootlessConnection() (*dbus.Conn, error) {
return dbus.NewConnection(func() (*godbus.Conn, error) {
return dbusAuthRootlessConnection(func(opts ...godbus.ConnOption) (*godbus.Conn, error) {
path := filepath.Join(os.Getenv("XDG_RUNTIME_DIR"), "systemd/private")
return godbus.Dial(fmt.Sprintf("unix:path=%s", path))
})
})
}
// ConnectToDBUS returns a DBUS connection. It works both as root and non-root
// users.
func ConnectToDBUS() (*dbus.Conn, error) {
if rootless.IsRootless() {
return newRootlessConnection()
}
return dbus.NewSystemdConnection()
}
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