func main() {
go worker()
state, err := term.SetRawTerminal(os.Stdin.Fd())
if err != nil {
panic(err)
}
defer term.RestoreTerminal(os.Stdin.Fd(), state)
winsize, _ = term.GetWinsize(os.Stdin.Fd())
client, err := beam.NewClient(&beam.NetTransport{"tcp", ":6379"})
if err != nil {
panic(err)
}
defer client.Close()
job := createJob(client)
if err := job.Start(); err != nil {
panic(err)
}
if err := job.Wait(); err != nil {
panic(err)
}
}
func createJob(client *beam.Client) *beam.Job {
job, err := client.NewJob("tty")
if err != nil {
panic(err)
}
master, slave, err := pty.Open()
if err != nil {
panic(err)
}
_, err = term.SetRawTerminal(master.Fd())
if err != nil {
panic(err)
}
go job.WriteTo(slave, "stdout")
go job.WriteTo(slave, "stderr")
go job.ReadFrom(slave, "stdin")
go io.Copy(os.Stdout, master)
go io.Copy(os.Stderr, master)
go io.Copy(master, os.Stdin)
return job
}
func (cli *DockerCli) hijack(method, path string, setRawTerminal bool, in *os.File, out io.Writer) error {
req, err := http.NewRequest(method, fmt.Sprintf("/v%g%s", APIVERSION, path), nil)
if err != nil {
return err
}
req.Header.Set("User-Agent", "Docker-Client/"+VERSION)
req.Header.Set("Content-Type", "plain/text")
dial, err := net.Dial(cli.proto, cli.addr)
if err != nil {
return err
}
clientconn := httputil.NewClientConn(dial, nil)
defer clientconn.Close()
// Server hijacks the connection, error 'connection closed' expected
clientconn.Do(req)
rwc, br := clientconn.Hijack()
defer rwc.Close()
receiveStdout := utils.Go(func() error {
_, err := io.Copy(out, br)
return err
})
if in != nil && setRawTerminal && term.IsTerminal(in.Fd()) && os.Getenv("NORAW") == "" {
oldState, err := term.SetRawTerminal()
if err != nil {
return err
}
defer term.RestoreTerminal(oldState)
}
sendStdin := utils.Go(func() error {
io.Copy(rwc, in)
if err := rwc.(*net.TCPConn).CloseWrite(); err != nil {
utils.Debugf("Couldn't send EOF: %s\n", err)
}
// Discard errors due to pipe interruption
return nil
})
if err := <-receiveStdout; err != nil {
utils.Debugf("Error receiveStdout: %s", err)
return err
}
if !term.IsTerminal(in.Fd()) {
if err := <-sendStdin; err != nil {
utils.Debugf("Error sendStdin: %s", err)
return err
}
}
return nil
}
func (cli *DockerCli) hijack(method, path string, setRawTerminal bool) error {
req, err := http.NewRequest(method, path, nil)
if err != nil {
return err
}
req.Header.Set("Content-Type", "plain/text")
dial, err := net.Dial("tcp", fmt.Sprintf("%s:%d", cli.host, cli.port))
if err != nil {
return err
}
clientconn := httputil.NewClientConn(dial, nil)
clientconn.Do(req)
defer clientconn.Close()
rwc, br := clientconn.Hijack()
defer rwc.Close()
receiveStdout := utils.Go(func() error {
_, err := io.Copy(os.Stdout, br)
return err
})
if setRawTerminal && term.IsTerminal(int(os.Stdin.Fd())) && os.Getenv("NORAW") == "" {
if oldState, err := term.SetRawTerminal(); err != nil {
return err
} else {
defer term.RestoreTerminal(oldState)
}
}
sendStdin := utils.Go(func() error {
_, err := io.Copy(rwc, os.Stdin)
if err := rwc.(*net.TCPConn).CloseWrite(); err != nil {
fmt.Fprintf(os.Stderr, "Couldn't send EOF: %s\n", err)
}
return err
})
if err := <-receiveStdout; err != nil {
return err
}
if !term.IsTerminal(int(os.Stdin.Fd())) {
if err := <-sendStdin; err != nil {
return err
}
}
return nil
}
func (client *Client) Attach(in io.ReadCloser, out io.WriteCloser) {
client.Connect()
client.in = in
if file, ok := client.in.(*os.File); ok {
client.terminalFd = file.Fd()
client.isTerminal = term.IsTerminal(client.terminalFd)
}
if !client.isTerminal {
panic(fmt.Errorf("siphon: cannot attach, no tty"))
}
fmt.Fprintf(log.client, "attaching to tty\r\n")
rawOldState, err := term.SetRawTerminal(client.terminalFd)
if err != nil {
panic(err)
}
defer term.RestoreTerminal(client.terminalFd, rawOldState)
client.monitorTtySize()
var track sync.WaitGroup
track.Add(1)
go func() {
defer track.Done()
io.Copy(out, client.stdout)
fmt.Fprintf(log.client, "client output closed\r\n")
}()
// track.Add(1) // io.Copy will block indefinitely on 'in' regardless of if client.stdin has been closed, so we can't actually wait for this.
go func() {
io.Copy(client.stdin, in)
fmt.Fprintf(log.client, "client input closed\r\n")
}()
track.Wait()
}
func (c *Client) hijack(method, path string, setRawTerminal bool, in *os.File, errStream io.Writer, out io.Writer) error {
req, err := http.NewRequest(method, c.getURL(path), nil)
if err != nil {
return err
}
req.Header.Set("Content-Type", "plain/text")
dial, err := net.Dial("tcp", c.endpointURL.Host)
if err != nil {
return err
}
clientconn := httputil.NewClientConn(dial, nil)
clientconn.Do(req)
defer clientconn.Close()
rwc, br := clientconn.Hijack()
defer rwc.Close()
errStdout := make(chan error, 1)
go func() {
_, err := io.Copy(out, br)
errStdout <- err
}()
if in != nil && setRawTerminal && term.IsTerminal(in.Fd()) && os.Getenv("NORAW") == "" {
oldState, err := term.SetRawTerminal(in.Fd())
if err != nil {
return err
}
defer term.RestoreTerminal(in.Fd(), oldState)
}
go func() {
io.Copy(rwc, in)
if err := rwc.(*net.TCPConn).CloseWrite(); err != nil {
fmt.Fprintf(errStream, "Couldn't send EOF: %s\n", err)
}
}()
if err := <-errStdout; err != nil {
return err
}
return nil
}
// 'docker login': login / register a user to registry service.
func (cli *DockerCli) CmdLogin(args ...string) error {
var readStringOnRawTerminal = func(stdin io.Reader, stdout io.Writer, echo bool) string {
char := make([]byte, 1)
buffer := make([]byte, 64)
var i = 0
for i < len(buffer) {
n, err := stdin.Read(char)
if n > 0 {
if char[0] == '\r' || char[0] == '\n' {
stdout.Write([]byte{'\r', '\n'})
break
} else if char[0] == 127 || char[0] == '\b' {
if i > 0 {
if echo {
stdout.Write([]byte{'\b', ' ', '\b'})
}
i--
}
} else if !unicode.IsSpace(rune(char[0])) &&
!unicode.IsControl(rune(char[0])) {
if echo {
stdout.Write(char)
}
buffer[i] = char[0]
i++
}
}
if err != nil {
if err != io.EOF {
fmt.Fprintf(stdout, "Read error: %v\r\n", err)
}
break
}
}
return string(buffer[:i])
}
var readAndEchoString = func(stdin io.Reader, stdout io.Writer) string {
return readStringOnRawTerminal(stdin, stdout, true)
}
var readString = func(stdin io.Reader, stdout io.Writer) string {
return readStringOnRawTerminal(stdin, stdout, false)
}
oldState, err := term.SetRawTerminal()
if err != nil {
return err
} else {
defer term.RestoreTerminal(oldState)
}
cmd := Subcmd("login", "", "Register or Login to the docker registry server")
if err := cmd.Parse(args); err != nil {
return nil
}
body, _, err := cli.call("GET", "/auth", nil)
if err != nil {
return err
}
var out auth.AuthConfig
err = json.Unmarshal(body, &out)
if err != nil {
return err
}
var username string
var password string
var email string
fmt.Print("Username (", out.Username, "): ")
username = readAndEchoString(os.Stdin, os.Stdout)
if username == "" {
username = out.Username
}
if username != out.Username {
fmt.Print("Password: "******"" {
return fmt.Errorf("Error : Password Required")
}
fmt.Print("Email (", out.Email, "): ")
email = readAndEchoString(os.Stdin, os.Stdout)
if email == "" {
email = out.Email
}
} else {
email = out.Email
}
out.Username = username
out.Password = password
out.Email = email
body, _, err = cli.call("POST", "/auth", out)
if err != nil {
return err
}
var out2 ApiAuth
err = json.Unmarshal(body, &out2)
if err != nil {
return err
}
if out2.Status != "" {
term.RestoreTerminal(oldState)
fmt.Print(out2.Status)
}
return nil
}
// 'docker login': login / register a user to registry service.
func (cli *DockerCli) CmdLogin(args ...string) error {
var readStringOnRawTerminal = func(stdin io.Reader, stdout io.Writer, echo bool) string {
char := make([]byte, 1)
buffer := make([]byte, 64)
var i = 0
for i < len(buffer) {
n, err := stdin.Read(char)
if n > 0 {
if char[0] == '\r' || char[0] == '\n' {
stdout.Write([]byte{'\r', '\n'})
break
} else if char[0] == 127 || char[0] == '\b' {
if i > 0 {
if echo {
stdout.Write([]byte{'\b', ' ', '\b'})
}
i--
}
} else if !unicode.IsSpace(rune(char[0])) &&
!unicode.IsControl(rune(char[0])) {
if echo {
stdout.Write(char)
}
buffer[i] = char[0]
i++
}
}
if err != nil {
if err != io.EOF {
fmt.Fprintf(stdout, "Read error: %v\r\n", err)
}
break
}
}
return string(buffer[:i])
}
var readAndEchoString = func(stdin io.Reader, stdout io.Writer) string {
return readStringOnRawTerminal(stdin, stdout, true)
}
var readString = func(stdin io.Reader, stdout io.Writer) string {
return readStringOnRawTerminal(stdin, stdout, false)
}
cmd := Subcmd("login", "[OPTIONS]", "Register or Login to the docker registry server")
flUsername := cmd.String("u", "", "username")
flPassword := cmd.String("p", "", "password")
flEmail := cmd.String("e", "", "email")
err := cmd.Parse(args)
if err != nil {
return nil
}
var oldState *term.State
if *flUsername == "" || *flPassword == "" || *flEmail == "" {
oldState, err = term.SetRawTerminal(cli.terminalFd)
if err != nil {
return err
}
defer term.RestoreTerminal(cli.terminalFd, oldState)
}
var (
username string
password string
email string
)
if *flUsername == "" {
fmt.Fprintf(cli.out, "Username (%s): ", cli.authConfig.Username)
username = readAndEchoString(cli.in, cli.out)
if username == "" {
username = cli.authConfig.Username
}
} else {
username = *flUsername
}
if username != cli.authConfig.Username {
if *flPassword == "" {
fmt.Fprintf(cli.out, "Password: "******"" {
return fmt.Errorf("Error : Password Required")
}
} else {
password = *flPassword
}
if *flEmail == "" {
fmt.Fprintf(cli.out, "Email (%s): ", cli.authConfig.Email)
email = readAndEchoString(cli.in, cli.out)
if email == "" {
email = cli.authConfig.Email
}
} else {
email = *flEmail
}
} else {
password = cli.authConfig.Password
email = cli.authConfig.Email
}
if oldState != nil {
term.RestoreTerminal(cli.terminalFd, oldState)
}
cli.authConfig.Username = username
cli.authConfig.Password = password
cli.authConfig.Email = email
body, statusCode, err := cli.call("POST", "/auth", cli.authConfig)
if statusCode == 401 {
cli.authConfig.Username = ""
cli.authConfig.Password = ""
cli.authConfig.Email = ""
auth.SaveConfig(cli.authConfig)
return err
}
if err != nil {
return err
}
var out2 APIAuth
err = json.Unmarshal(body, &out2)
if err != nil {
auth.LoadConfig(os.Getenv("HOME"))
return err
}
auth.SaveConfig(cli.authConfig)
if out2.Status != "" {
fmt.Fprintf(cli.out, "%s\n", out2.Status)
}
return nil
}
func (cli *DockerCli) hijack(method, path string, setRawTerminal bool, in io.ReadCloser, out io.Writer) error {
req, err := http.NewRequest(method, fmt.Sprintf("/v%g%s", APIVERSION, path), nil)
if err != nil {
return err
}
req.Header.Set("User-Agent", "Docker-Client/"+VERSION)
req.Header.Set("Content-Type", "plain/text")
req.Host = cli.addr
dial, err := net.Dial(cli.proto, cli.addr)
if err != nil {
if strings.Contains(err.Error(), "connection refused") {
return fmt.Errorf("Can't connect to docker daemon. Is 'docker -d' running on this host?")
}
return err
}
clientconn := httputil.NewClientConn(dial, nil)
defer clientconn.Close()
// Server hijacks the connection, error 'connection closed' expected
clientconn.Do(req)
rwc, br := clientconn.Hijack()
defer rwc.Close()
var receiveStdout (chan error)
if out != nil {
receiveStdout = utils.Go(func() error {
_, err := io.Copy(out, br)
utils.Debugf("[hijack] End of stdout")
return err
})
}
if in != nil && setRawTerminal && cli.isTerminal && os.Getenv("NORAW") == "" {
oldState, err := term.SetRawTerminal(cli.terminalFd)
if err != nil {
return err
}
defer term.RestoreTerminal(cli.terminalFd, oldState)
}
sendStdin := utils.Go(func() error {
if in != nil {
io.Copy(rwc, in)
utils.Debugf("[hijack] End of stdin")
}
if tcpc, ok := rwc.(*net.TCPConn); ok {
if err := tcpc.CloseWrite(); err != nil {
utils.Debugf("Couldn't send EOF: %s\n", err)
}
} else if unixc, ok := rwc.(*net.UnixConn); ok {
if err := unixc.CloseWrite(); err != nil {
utils.Debugf("Couldn't send EOF: %s\n", err)
}
}
// Discard errors due to pipe interruption
return nil
})
if out != nil {
if err := <-receiveStdout; err != nil {
utils.Debugf("Error receiveStdout: %s", err)
return err
}
}
if !cli.isTerminal {
if err := <-sendStdin; err != nil {
utils.Debugf("Error sendStdin: %s", err)
return err
}
}
return nil
}
func main() {
disc, err := discover.NewClient()
if err != nil {
log.Fatal(err)
}
scheduler, err := client.New()
if err != nil {
log.Fatal(err)
}
state, err := scheduler.State()
if err != nil {
log.Fatal(err)
}
var firstHost string
for k := range state {
firstHost = k
break
}
if firstHost == "" {
log.Fatal("no hosts")
}
id := randomID()
services, err := disc.Services("flynn-lorne-attach." + firstHost)
if err != nil {
log.Fatal(err)
}
conn, err := net.Dial("tcp", services.OnlineAddrs()[0])
if err != nil {
log.Fatal(err)
}
ws, _ := term.GetWinsize(os.Stdin.Fd())
err = gob.NewEncoder(conn).Encode(&lorne.AttachReq{
JobID: id,
Flags: lorne.AttachFlagStdout | lorne.AttachFlagStderr | lorne.AttachFlagStdin | lorne.AttachFlagStream,
Height: int(ws.Height),
Width: int(ws.Width),
})
if err != nil {
log.Fatal(err)
}
attachState := make([]byte, 1)
if _, err := conn.Read(attachState); err != nil {
log.Fatal(err)
}
switch attachState[0] {
case lorne.AttachError:
log.Fatal("attach error")
}
schedReq := &sampi.ScheduleReq{
Incremental: true,
HostJobs: map[string][]*sampi.Job{firstHost: {{ID: id, Config: &docker.Config{
Image: "titanous/redis",
Cmd: []string{"/bin/bash", "-i"},
Tty: true,
AttachStdin: true,
AttachStdout: true,
AttachStderr: true,
OpenStdin: true,
StdinOnce: true,
Env: []string{
"COLUMNS=" + strconv.Itoa(int(ws.Width)),
"LINES=" + strconv.Itoa(int(ws.Height)),
"TERM=" + os.Getenv("TERM"),
},
}}}},
}
if _, err := scheduler.Schedule(schedReq); err != nil {
log.Fatal(err)
}
if _, err := conn.Read(attachState); err != nil {
log.Fatal(err)
}
oldState, err := term.SetRawTerminal(os.Stdin.Fd())
if err != nil {
log.Fatal(err)
}
go io.Copy(conn, os.Stdin)
if _, err := io.Copy(os.Stdout, conn); err != nil {
log.Fatal(err)
}
term.RestoreTerminal(os.Stdin.Fd(), oldState)
}