Rust

Request SSH X11 Forwarding

Demonstrates the Chilkat Ssh.SendReqX11Forwarding method, which sends an X11-forwarding request on a session channel. The arguments are the channel number, whether forwarding is limited to a single connection, and the X11 authentication protocol, cookie, and screen number.

Background: X11 forwarding lets a graphical program running on the remote host display its window on your local machine, tunneled over SSH. This is a low-level method that only sends the protocol request — your application is still responsible for the local X server side of the arrangement. The authentication cookie guards the forwarded display, so it should be a freshly generated value rather than a fixed constant.

Chilkat Rust Downloads

Download Chilkat for Rust

Rust


// Demonstrates the Ssh.SendReqX11Forwarding method, which sends an SSH X11-forwarding request
// on a session channel.  The 1st argument is the channel number, the 2nd limits forwarding to a
// single connection, and the 3rd through 5th supply the X11 authentication protocol, cookie,
// and screen number.

let ssh = chilkat::Ssh::new();

let ssh_port = 22;
if ssh.connect("ssh.example.com", ssh_port).is_err() {
    println!("{}", ssh.last_error_text());
    return;
}

// Normally you would not hard-code the password in source.  You should instead obtain it
// from an interactive prompt, environment variable, or a secrets vault.
let password = "mySshPassword".to_string();

if ssh.authenticate_pw("mySshLogin", &password).is_err() {
    println!("{}", ssh.last_error_text());
    return;
}

// Open a session channel.  A negative return value indicates failure.
let channel_num = ssh.open_session_channel();
if channel_num < 0 {
    println!("{}", ssh.last_error_text());
    return;
}

// Request X11 forwarding.  Named variables make each argument's meaning clear.
let single_connection = false;
let auth_prot = "MIT-MAGIC-COOKIE-1".to_string();
let auth_cookie = "d92f5e1a7c8b4306af17c2e5b9d43081".to_string();
let screen_num = 0;
if ssh.send_req_x11_forwarding(channel_num, single_connection, &auth_prot, &auth_cookie, screen_num).is_err() {
    println!("{}", ssh.last_error_text());
    return;
}

println!("X11 forwarding requested.");

ssh.disconnect();