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package busdial
import (
"context"
"fmt"
"os"
"strconv"
sd "github.com/coreos/go-systemd/v22/dbus"
"github.com/godbus/dbus/v5"
)
func PrivatePath() string {
return os.Getenv("XDG_RUNTIME_DIR") + "/systemd/private"
}
func RawPrivate(ctx context.Context, path string) (*dbus.Conn, error) {
c, err := dbus.Dial("unix:path="+path, dbus.WithContext(ctx))
if err != nil {
return nil, err
}
if err := c.Auth([]dbus.Auth{dbus.AuthExternal(strconv.Itoa(os.Getuid()))}); err != nil {
c.Close()
return nil, err
}
return c, nil
}
func RawSession(ctx context.Context, addr string) (*dbus.Conn, error) {
c, err := dbus.Dial(addr, dbus.WithContext(ctx))
if err != nil {
return nil, err
}
if err := c.Auth([]dbus.Auth{dbus.AuthExternal(strconv.Itoa(os.Getuid()))}); err != nil {
c.Close()
return nil, err
}
if err := c.Hello(); err != nil {
c.Close()
return nil, err
}
return c, nil
}
func Raw(ctx context.Context, mode, path string) (*dbus.Conn, error) {
switch mode {
case "private":
if path == "" {
path = PrivatePath()
}
return RawPrivate(ctx, path)
case "session":
addr := os.Getenv("DBUS_SESSION_BUS_ADDRESS")
if path != "" {
addr = "unix:path=" + path
}
return RawSession(ctx, addr)
}
return nil, fmt.Errorf("unknown mode %q", mode)
}
func Systemd(ctx context.Context, mode, path string) (*sd.Conn, error) {
if mode == "session" && path == "" {
return sd.NewUserConnectionContext(ctx)
}
return sd.NewConnection(func() (*dbus.Conn, error) { return Raw(ctx, mode, path) })
}
