Swift

SFTP Authenticate with a Password

Demonstrates the Chilkat SFtp.AuthenticatePw method, which authenticates the connected session with a login name and password. The first argument is the login and the second is the password. Call Connect first and InitializeSftp afterward.

Background: Password authentication is the simplest SFTP method, but the password is a secret and should never be a hard-coded literal — obtain it from an interactive prompt, an environment variable, or a secrets vault. Public-key authentication is generally preferred for automated jobs. Note the fixed ordering: authentication happens between Connect and InitializeSftp.

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func chilkatTest() {
    var success: Bool = false

    //  Demonstrates the SFtp.AuthenticatePw method, which authenticates the connected session with a
    //  login name and password.  The 1st argument is the login and the 2nd is the password.

    let sftp = CkoSFtp()!

    //  Step 1: Connect the SSH transport.  Port 22 is the usual port.
    var port: Int = 22
    success = sftp.connect(hostname: "sftp.example.com", port: port)
    if success == false {
        print("\(sftp.lastErrorText!)")
        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.
    var password: String? = "mySshPassword"

    success = sftp.authenticatePw(login: "mySshLogin", password: password)
    if success == false {
        print("\(sftp.lastErrorText!)")
        return
    }

    //  Step 3: Open the SFTP subsystem.  This must be done after authentication and before any
    //  file or directory operations.
    success = sftp.initializeSftp()
    if success == false {
        print("\(sftp.lastErrorText!)")
        return
    }

    print("Authenticated with a password.")

    sftp.disconnect()

}