Lianja Requires Chilkat v10.1.2+

Secure FTP with Client Certificate

See more FTP Examples

Chilkat FTP2 provides the ability to use a client certificate with secure FTP (implicit or explicit SSL/TLS). This example demonstrates how to load a certificate from a .pfx and use it as the client-side SSL cert. Note: Client-side certificates are only needed in situations where the server demands one. Lianja

llSuccess = .F.

//  This example requires the Chilkat API to have been previously unlocked.
//  See Global Unlock Sample for sample code.

loFtp = createobject("CkFtp2")

loFtp.Hostname = "ftp.example.com"
loFtp.Port = 21
loFtp.Username = "test"
loFtp.Password = "test"

//  This example will use explict TLS/SSL.
//  Establish an explicit secure channel after connection
//  on the standard FTP port 21.
loFtp.AuthTls = .T.

//  The Ssl property is for establishing an implicit SSL connection
//  on port 990.  Because this example uses explicit SSL, it 
//  should remain .F..
loFtp.Ssl = .F.

//  Load a certificate from a .pfx
//  A PFX may contain several certs, including the certificates
//  in a chain of authority.
loCertStore = createobject("CkCertStore")

lcPassword = "***"
//  Load the certs from a PFX into an in-memory certificate store:
llSuccess = loCertStore.LoadPfxFile("chilkat.pfx",lcPassword)
if (llSuccess <> .T.) then
    ? loCertStore.LastErrorText
    release loFtp
    release loCertStore
    return
endif

//  Find the desired certificate.
loJsonCN = createobject("CkJsonObject")
loJsonCN.UpdateString("CN","cert common name")

loCert = createobject("CkCert")
llSuccess = loCertStore.FindCert(loJsonCN,loCert)
if (llSuccess = .F.) then
    ? "Certificate not found!"
    release loFtp
    release loCertStore
    release loJsonCN
    release loCert
    return
endif

//  Use this certificate for our secure (SSL/TLS) connection:
llSuccess = loFtp.SetSslClientCert(loCert)

//  Connect and login to the FTP server.  The connection is 
//  made secure because of the AuthTls setting.
llSuccess = loFtp.Connect()
if (llSuccess <> .T.) then
    ? loFtp.LastErrorText
    release loFtp
    release loCertStore
    release loJsonCN
    release loCert
    return
else
    //  LastErrorText contains information even when
    //  successful. This allows you to visually verify
    //  that the secure connection actually occurred.
    ? loFtp.LastErrorText
endif

? "Secure FTP Channel Established!"

//  Do whatever you're doing to do ...
//  upload files, download files, etc...

//  .....
//  .....

llSuccess = loFtp.Disconnect()


release loFtp
release loCertStore
release loJsonCN
release loCert