forked from moby/moby
/
hijack.go
78 lines (69 loc) · 1.77 KB
/
hijack.go
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package client
import (
"io"
"os"
"github.com/Sirupsen/logrus"
"github.com/docker/docker/api/types"
"github.com/docker/docker/pkg/stdcopy"
"github.com/docker/docker/pkg/term"
)
func (cli *DockerCli) holdHijackedConnection(setRawTerminal bool, inputStream io.ReadCloser, outputStream, errorStream io.Writer, resp types.HijackedResponse) error {
var (
err error
oldState *term.State
)
if inputStream != nil && setRawTerminal && cli.isTerminalIn && os.Getenv("NORAW") == "" {
oldState, err = term.SetRawTerminal(cli.inFd)
if err != nil {
return err
}
defer term.RestoreTerminal(cli.inFd, oldState)
}
receiveStdout := make(chan error, 1)
if outputStream != nil || errorStream != nil {
go func() {
defer func() {
if inputStream != nil {
if setRawTerminal && cli.isTerminalIn {
term.RestoreTerminal(cli.inFd, oldState)
}
inputStream.Close()
}
}()
// When TTY is ON, use regular copy
if setRawTerminal && outputStream != nil {
_, err = io.Copy(outputStream, resp.Reader)
} else {
_, err = stdcopy.StdCopy(outputStream, errorStream, resp.Reader)
}
logrus.Debugf("[hijack] End of stdout")
receiveStdout <- err
}()
}
stdinDone := make(chan struct{})
go func() {
if inputStream != nil {
io.Copy(resp.Conn, inputStream)
logrus.Debugf("[hijack] End of stdin")
}
if err := resp.CloseWrite(); err != nil {
logrus.Debugf("Couldn't send EOF: %s", err)
}
close(stdinDone)
}()
select {
case err := <-receiveStdout:
if err != nil {
logrus.Debugf("Error receiveStdout: %s", err)
return err
}
case <-stdinDone:
if outputStream != nil || errorStream != nil {
if err := <-receiveStdout; err != nil {
logrus.Debugf("Error receiveStdout: %s", err)
return err
}
}
}
return nil
}