Visual FoxPro

Set an FTPS Client Certificate from PEM

Demonstrates the Chilkat Ftp2.SetSslClientCertPem method, which configures a client certificate and private key from PEM. The first argument may be the PEM text or a PEM file path, and the second is the private-key password (empty when the key is not encrypted).

Note: The local paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: This is the PEM-based form of setting the mutual-TLS client certificate — convenient when the certificate and key already live in a .pem file, the common format from OpenSSH and Unix tooling. Use SetSslClientCertPfx instead for a PKCS#12 .pfx/.p12 bundle. As with any client certificate, set it before connecting.

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LOCAL lnSuccess
LOCAL loFtp
LOCAL lcPemPassword

lnSuccess = 0

*  Demonstrates the Ftp2.SetSslClientCertPem method, which configures a client certificate and
*  private key from PEM.  The 1st argument is the PEM text or a PEM file path, and the 2nd is the
*  private-key password (empty when the key is not encrypted).

loFtp = CreateObject('Chilkat.Ftp2')

loFtp.Hostname = "ftp.example.com"
loFtp.Username = "myFtpLogin"

*  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.
loFtp.Password = "myPassword"

*  Use explicit FTPS (AUTH TLS) on the standard FTP port.
loFtp.AuthTls = 1

*  Provide the PEM client certificate before connecting.  The password should come from a secure
*  source rather than being hard-coded.
lcPemPassword = "myPemPassword"
lnSuccess = loFtp.SetSslClientCertPem("qa_data/client.pem",lcPemPassword)
IF (lnSuccess = 0) THEN
    ? loFtp.LastErrorText
    RELEASE loFtp
    CANCEL
ENDIF

lnSuccess = loFtp.Connect()
IF (lnSuccess = 0) THEN
    ? loFtp.LastErrorText
    RELEASE loFtp
    CANCEL
ENDIF

? "Connected with a PEM client certificate."

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

RELEASE loFtp