func hijack(conn net.Conn, br *bufio.Reader) int {
var in io.Reader
term, err := pty.OpenRawTerm()
if err == nil {
defer term.Restore()
in = term
} else {
in = os.Stdin
}
encoder := json.NewEncoder(conn)
decoder := json.NewDecoder(br)
resized := pty.ResizeNotifier()
go func() {
for {
<-resized
// TODO json race
sendSize(encoder)
}
}()
go io.Copy(&stdinWriter{encoder}, in)
var exitStatus int
for {
var output atc.HijackOutput
err := decoder.Decode(&output)
if err != nil {
break
}
if output.ExitStatus != nil {
exitStatus = *output.ExitStatus
} else if len(output.Error) > 0 {
fmt.Fprintf(os.Stderr, "%s\n", ansi.Color(output.Error, "red+b"))
exitStatus = 255
} else if len(output.Stdout) > 0 {
os.Stdout.Write(output.Stdout)
} else if len(output.Stderr) > 0 {
os.Stderr.Write(output.Stderr)
}
}
return exitStatus
}
func (h *Hijacker) monitorTTYSize(inputs chan<- atc.HijackInput, finished chan struct{}) {
resized := pty.ResizeNotifier()
for {
select {
case <-resized:
rows, cols, err := pty.Getsize(os.Stdin)
if err == nil {
inputs <- atc.HijackInput{
TTYSpec: &atc.HijackTTYSpec{
WindowSize: atc.HijackWindowSize{
Columns: cols,
Rows: rows,
},
},
}
}
case <-finished:
return
}
}
}