Visual FoxPro

Using WS_FTP Self-signed Certificate file (.crt) and Private Key File. (.key)

See more FTP Examples

Demonstrates how to use a self-signed certificate created by WS_FTP with Chilkat FTP2.

Note: It is usually not necessary for the FTP client to use a client-side certificate. Most FTP servers using SSL and TLS connections (explicit or implicit) do not require client-side certs. In addition, some high-security FTP servers require "real" certificates -- meaning certificates issued by a real certificate authority with a chain of authentication that leads to a trusted root certificate. The certificates created by WS_FTP are self-signed and untrusted.

Visual FoxPro

LOCAL lnSuccess
LOCAL loFtp
LOCAL loCertStore
LOCAL loJsonCN
LOCAL loCert

lnSuccess = 0

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

* Important:  Before running this program, convert your
* .crt and .key files to a .p12 using OpenSSL:
* The command is this:
* openssl pkcs12 -export -in test.crt -inkey test.key -out test.p12
* 

loFtp = CreateObject('Chilkat.Ftp2')

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

* This example will use explict TLS/SSL.
* Establish an explicit secure channel after connection
* on the standard FTP port 21.
loFtp.AuthTls = 1

* The Ssl property is for establishing an implicit SSL connection
* on port 990.  Because this example uses explicit SSL, it 
* should remain 0.
loFtp.Ssl = 0

* Create an instance of a certificate store object, load a .p12 file,
* locate the certificate we need, and use it for signing.
* (a P12/PFX file may contain more than one certificate.)
loCertStore = CreateObject('Chilkat.CertStore')
* The 1st argument is the filename, the 2nd arg is the 
* .p12 file's password.  (OpenSSL will prompty you to set a password
* when converting the .crt and .key into a .p12).
lnSuccess = loCertStore.LoadPfxFile("test.p12","secret")
IF (lnSuccess <> 1) THEN
    ? loCertStore.LastErrorText
    RELEASE loFtp
    RELEASE loCertStore
    CANCEL
ENDIF

loJsonCN = CreateObject('Chilkat.JsonObject')
loJsonCN.UpdateString("CN","cert common name")

loCert = CreateObject('Chilkat.Cert')
lnSuccess = loCertStore.FindCert(loJsonCN,loCert)
IF (lnSuccess = 0) THEN
    ? loCertStore.LastErrorText
    RELEASE loFtp
    RELEASE loCertStore
    RELEASE loJsonCN
    RELEASE loCert
    CANCEL
ENDIF

lnSuccess = loFtp.SetSslClientCert(loCert)

* Connect and login to the FTP server.
lnSuccess = loFtp.Connect()
IF (lnSuccess <> 1) THEN
    ? loFtp.LastErrorText
    RELEASE loFtp
    RELEASE loCertStore
    RELEASE loJsonCN
    RELEASE loCert
    CANCEL
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!"
? loFtp.LastErrorText

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

* ...
* ...

lnSuccess = loFtp.Disconnect()

RELEASE loFtp
RELEASE loCertStore
RELEASE loJsonCN
RELEASE loCert