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SSH Tunnel Authenticate with a Password

Demonstrates the Chilkat SshTunnel.AuthenticatePw method, which authenticates the SSH connection with a login name and password. The first argument is the login and the second is the password. Connect first, and call BeginAccepting afterward.

Background: Password authentication is the simplest option, 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 the unattended, long-running services that tunnels often are.

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llSuccess = .F.

//  Demonstrates the SshTunnel.AuthenticatePw method, which authenticates the SSH connection with
//  a login name and password.  The 1st argument is the login and the 2nd is the password.

loTunnel = createobject("CkSshTunnel")

//  The tunnel forwards accepted local connections to this destination through the SSH server.
loTunnel.DestHostname = "db.internal.example.com"
loTunnel.DestPort = 5432

//  Connect to the SSH server.  This performs the TCP/proxy connection and SSH handshake, but
//  does not authenticate yet.
lnSshPort = 22
llSuccess = loTunnel.Connect("ssh.example.com",lnSshPort)
if (llSuccess = .F.) then
    ? loTunnel.LastErrorText
    release loTunnel
    return
endif

//  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.
lcPassword = "mySshPassword"

llSuccess = loTunnel.AuthenticatePw("mySshLogin",lcPassword)
if (llSuccess = .F.) then
    ? loTunnel.LastErrorText
    release loTunnel
    return
endif

? "Authenticated."

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

llWaitForThreadExit = .T.
llSuccess = loTunnel.CloseTunnel(llWaitForThreadExit)
if (llSuccess = .F.) then
    ? loTunnel.LastErrorText
    release loTunnel
    return
endif



release loTunnel