Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

x/crypto/ssh: Use session.Shell() and session.Wait() How to get user input command at Interactive Shell #41393

Closed
shencan opened this issue Sep 15, 2020 · 1 comment

Comments

@shencan
Copy link

shencan commented Sep 15, 2020

What version of Go are you using (go version)?

$ go version
go version go1.13.4 linux/amd64

Does this issue reproduce with the latest release?

yes

What operating system and processor architecture are you using (go env)?

go env Output
$ go env

What did you do?

I Want To Get user input command at Interactive Shell

code

func main() {
	key, err := ioutil.ReadFile("/home/xxxx/.ssh/id_rsa")
	if err != nil {
		log.Fatalf("unable to read private key: %v", err)
	}
	signer, err := ssh.ParsePrivateKey(key)
	if err != nil {
		log.Fatalf("unable to parse private key: %v", err)
	}

	config := &ssh.ClientConfig{
		User: "mobsa",
		Auth: []ssh.AuthMethod{
			ssh.PublicKeys(signer),
		},
		HostKeyCallback: ssh.InsecureIgnoreHostKey(),
	}
	sshConn, err := ssh.Dial("tcp", "127.0.0.1:22", config)
	if err != nil {
		log.Fatalf("unable to connect: %v", err)
	}
	defer sshConn.Close()

	session, err := sshConn.NewSession()
	if err != nil {
		log.Fatal("unable to create session: ", err)
	}
	defer session.Close()

	session.Stdout = os.Stdout
	session.Stderr = os.Stderr
	session.Stdin = os.Stdin

	modes := ssh.TerminalModes{
		ssh.ECHO:          1,     // disable echoing
		ssh.TTY_OP_ISPEED: 14400, // input speed = 14.4kbaud
		ssh.TTY_OP_OSPEED: 14400, // output speed = 14.4kbaud
	}
	fileDescriptor := int(os.Stdin.Fd())

	if terminal.IsTerminal(fileDescriptor) {
		originalState, err := terminal.MakeRaw(fileDescriptor)
		if err != nil {
			fmt.Println(err)
		}
		defer terminal.Restore(fileDescriptor, originalState)
		termWidth, termHeight, err := terminal.GetSize(fileDescriptor)
		if err != nil {
			fmt.Println(err)
		}
		err = session.RequestPty("xterm-256color", termHeight, termWidth, modes)
		if err != nil {
			fmt.Println(err)
		}
	}
	err = session.Shell()
	if err != nil {
		fmt.Println(err)
	}
        err = session.Wait()
        if err != nil {
		fmt.Println(err)
	}
}

What did you expect to see?

Can connect to a remote shell and Using the normal, But how do I get user command line input on OS.stdin?

What did you see instead?

@gopherbot gopherbot added this to the Unreleased milestone Sep 15, 2020
@toothrot
Copy link
Contributor

We don't really use our issue tracker for questions. More people will see your question, and you will get better answers, if you ask on a forum rather than on the issue tracker. See https://golang.org/wiki/Questions.

@golang golang locked and limited conversation to collaborators Sep 15, 2021
Sign up for free to subscribe to this conversation on GitHub. Already have an account? Sign in.
Projects
None yet
Development

No branches or pull requests

3 participants