Visual FoxPro

Authenticate an IMAP SSH Tunnel with a Password

Demonstrates the Chilkat Imap.SshAuthenticatePw method, which authenticates the SSH tunnel using a username and password. The first argument is the SSH login name and the second is the SSH password. Call SshOpenTunnel first; after SSH authentication succeeds, connect and log in to IMAP.

Background: This is SSH authentication, which is entirely separate from the IMAP login that follows — the SSH credentials belong to the tunnel/jump host, while the IMAP credentials belong to the mail account. Password authentication is the simplest option; use SshAuthenticatePk for key-based authentication, which is generally preferred for automated jobs.

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LOCAL lnSuccess
LOCAL loImap
LOCAL lnSshPort
LOCAL lcSshPassword

lnSuccess = 0

*  Demonstrates the Imap.SshAuthenticatePw method, which authenticates the SSH tunnel with a
*  username and password.  The 1st argument is the SSH login name and the 2nd is the SSH
*  password.  Call SshOpenTunnel first.

loImap = CreateObject('Chilkat.Imap')

*  Open the SSH tunnel first.
lnSshPort = 22
lnSuccess = loImap.SshOpenTunnel("ssh.example.com",lnSshPort)
IF (lnSuccess = 0) THEN
    ? loImap.LastErrorText
    RELEASE loImap
    CANCEL
ENDIF

*  The SSH password is not hard-coded in source.  Insert code here to obtain it from an
*  interactive prompt, environment variable, or a secrets vault.

*  Authenticate the SSH tunnel (this is SSH authentication, separate from IMAP login).
lnSuccess = loImap.SshAuthenticatePw("sshUser",lcSshPassword)
IF (lnSuccess = 0) THEN
    ? loImap.LastErrorText
    RELEASE loImap
    CANCEL
ENDIF

*  With the SSH tunnel in place, connect and log in to the IMAP server as usual.  The IMAP
*  traffic flows through the tunnel automatically.
loImap.Ssl = 1
loImap.Port = 993
lnSuccess = loImap.Connect("imap.example.com")
IF (lnSuccess = 0) THEN
    ? loImap.LastErrorText
    RELEASE loImap
    CANCEL
ENDIF

lnSuccess = loImap.Login("user@example.com","myPassword")
IF (lnSuccess = 0) THEN
    ? loImap.LastErrorText
    RELEASE loImap
    CANCEL
ENDIF

lnSuccess = loImap.Disconnect()
IF (lnSuccess = 0) THEN
    ? loImap.LastErrorText
    RELEASE loImap
    CANCEL
ENDIF

lnSuccess = loImap.SshCloseTunnel()
IF (lnSuccess = 0) THEN
    ? loImap.LastErrorText
    RELEASE loImap
    CANCEL
ENDIF

RELEASE loImap