Visual FoxPro

Get the Server Certificate, Certificate Chain, and Root CA Certificate

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Demonstrates how to get the HTTP server certificate, its certificate chain, and the root CA certificate. Visual FoxPro

LOCAL lnSuccess
LOCAL loHttp
LOCAL loSslCert
LOCAL loCertChain
LOCAL loCert
LOCAL i
LOCAL lnNumCerts
LOCAL loCaCert

lnSuccess = 0

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

loHttp = CreateObject('Chilkat.Http')

* We're getting the SSL/TLS certificate, so make sure to connect to the SSL/TLS port (443).
loSslCert = CreateObject('Chilkat.Cert')
lnSuccess = loHttp.GetServerCert("apple.com",443,loSslCert)
IF (lnSuccess = 0) THEN
    ? loHttp.LastErrorText
    RELEASE loHttp
    RELEASE loSslCert
    CANCEL
ENDIF

loCertChain = CreateObject('Chilkat.CertChain')
lnSuccess = loSslCert.BuildCertChain(loCertChain)
IF (lnSuccess = 0) THEN
    ? loSslCert.LastErrorText
    RELEASE loHttp
    RELEASE loSslCert
    RELEASE loCertChain
    CANCEL
ENDIF

loCert = CreateObject('Chilkat.Cert')
i = 0
lnNumCerts = loCertChain.NumCerts
DO WHILE i < lnNumCerts
    loCertChain.CertAt(i,loCert)
    ? "SubjectDN " + STR(i) + ": " + loCert.SubjectDN
    ? "IssuerDN " + STR(i) + ": " + loCert.IssuerDN
    i = i + 1
ENDDO

* If the certificate chain reaches the root CA cert, then the last cert in the chain
* is the root CA cert.
IF (loCertChain.ReachesRoot = 1) THEN
    loCaCert = CreateObject('Chilkat.Cert')
    loCertChain.CertAt(lnNumCerts - 1,loCaCert)
    ? "CA Root Cert: " + loCaCert.SubjectDN
ENDIF

RELEASE loHttp
RELEASE loSslCert
RELEASE loCertChain
RELEASE loCert
RELEASE loCaCert