SSH Tunnel Authenticate with Password and Private Key

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Demonstrates the Chilkat SshTunnel.AuthenticatePwPk method, which authenticates with a server that requires both a password and a private key. The arguments are the username, the password, and an SshKey private key.

Note: The private-key path is relative to the application's current working directory. Absolute paths may also be used. Supply the path to your own key file.

// Demonstrates the SshTunnel.AuthenticatePwPk method, which authenticates with an SSH server that
// requires BOTH a password and a private key.  The 1st argument is the username, the 2nd is the
// password, and the 3rd is an SshKey private key.

let tunnel = chilkat::SshTunnel::new();

// The tunnel forwards accepted local connections to this destination through the SSH server.
tunnel.set_dest_hostname("db.internal.example.com");
tunnel.set_dest_port(5432);

// Connect to the SSH server.  This performs the TCP/proxy connection and SSH handshake, but
// does not authenticate yet.
let ssh_port = 22;
if tunnel.connect("ssh.example.com", ssh_port).is_err() {
    println!("{}", tunnel.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();

// Load the SSH private key.  LoadText reads the file's text, which is then imported.
let priv_key = chilkat::SshKey::new();
let Ok(key_text) = priv_key.load_text("qa_data/id_rsa") else {
    println!("{}", priv_key.last_error_text());
    return;
};

if priv_key.from_open_ssh_private_key(&key_text).is_err() {
    println!("{}", priv_key.last_error_text());
    return;
}

if tunnel.authenticate_pw_pk("mySshLogin", &password, &priv_key).is_err() {
    println!("{}", tunnel.last_error_text());
    return;
}

println!("Authenticated with a password and a private key.");

// After authenticating, call BeginAccepting to start listening for local connections to forward.

let wait_for_thread_exit = true;
if tunnel.close_tunnel(wait_for_thread_exit).is_err() {
    println!("{}", tunnel.last_error_text());
    return;
}