func runCommand(args []string) error {
var oldState *term.State
var err error
if term.IsTerminal(int(os.Stdin.Fd())) && os.Getenv("NORAW") == "" {
oldState, err = term.MakeRaw(int(os.Stdin.Fd()))
if err != nil {
return err
}
defer term.Restore(int(os.Stdin.Fd()), oldState)
c := make(chan os.Signal, 1)
signal.Notify(c, os.Interrupt)
go func() {
for _ = range c {
term.Restore(int(os.Stdin.Fd()), oldState)
log.Printf("\nSIGINT received\n")
os.Exit(0)
}
}()
}
// FIXME: we want to use unix sockets here, but net.UnixConn doesn't expose
// CloseWrite(), which we need to cleanly signal that stdin is closed without
// closing the connection.
// See http://code.google.com/p/go/issues/detail?id=3345
if conn, err := rcli.Call("tcp", "127.0.0.1:4242", args...); err == nil {
receiveStdout := docker.Go(func() error {
_, err := io.Copy(os.Stdout, conn)
return err
})
sendStdin := docker.Go(func() error {
_, err := io.Copy(conn, os.Stdin)
if err := conn.CloseWrite(); err != nil {
log.Printf("Couldn't send EOF: " + err.Error())
}
return err
})
if err := <-receiveStdout; err != nil {
return err
}
if !term.IsTerminal(int(os.Stdin.Fd())) {
if err := <-sendStdin; err != nil {
return err
}
}
} else {
service, err := docker.NewServer()
if err != nil {
return err
}
if err := rcli.LocalCall(service, os.Stdin, os.Stdout, args...); err != nil {
return err
}
}
if oldState != nil {
term.Restore(int(os.Stdin.Fd()), oldState)
}
return nil
}
func SetRawTerminal() (*term.State, error) {
oldState, err := term.MakeRaw(int(os.Stdin.Fd()))
if err != nil {
return nil, err
}
c := make(chan os.Signal, 1)
signal.Notify(c, os.Interrupt)
go func() {
_ = <-c
term.Restore(int(os.Stdin.Fd()), oldState)
os.Exit(0)
}()
return oldState, err
}
func RestoreTerminal(state *term.State) {
term.Restore(int(os.Stdin.Fd()), state)
}