(Lianja) Use a Custom Set of Trusted Root Certificates

Demonstrates how to build a set of trusted root certificates to be used globally by all Chilkat classes.

Note: This example requires Chilkat v11.0.0 or greater.

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llSuccess = .F.

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

loTrustedRoots = createobject("CkTrustedRoots")

//  Indicate that we will NOT trust any pre-installed certificates on the system.
loTrustedRoots.TrustSystemCaRoots = .F.

// Thawte is a certificate authority that provides a .zip download of their
// root CA certificates:  https://www.thawte.com/roots/index.html
// The direct download link is: https://www.verisign.com/support/thawte-roots.zip
// Note: The above URLs are valid at the time of writing this example (29-May-2015).

// Assuming the .zip has already been downloaded, open it and load each .pem file into
// our trusted roots object.
loZip = createobject("CkZip")

// Open a .zip containing PEM files, among other things..
llSuccess = loZip.OpenZip("qa_data/certs/thawte-roots.zip")
if (llSuccess = .F.) then
    ? loZip.LastErrorText
    release loTrustedRoots
    release loZip
    return
endif

loEntry = createobject("CkZipEntry")

loCert = createobject("CkCert")

lcPattern = "*.pem"
llBHasMoreEntries = loZip.EntryMatching(lcPattern,loEntry)
do while llBHasMoreEntries = .T.

    ? "Entry: " + loEntry.FileName

    // Get the PEM of the CA cert:
    lcPemStr = loEntry.UnzipToString(0,"utf-8")

    // Load it into a certificate object:
    llSuccess = loCert.LoadPem(lcPemStr)
    if (llSuccess <> .T.) then
        ? loCert.LastErrorText
    endif

    // Add it to the trusted roots.
    loTrustedRoots.AddCert(loCert)

    llBHasMoreEntries = loEntry.GetNextMatch(lcPattern)
enddo

//  Activate the trusted roots globally for all Chilkat objects.
//  This call really shouldn't fail, so we're not checking the return value.
llSuccess = loTrustedRoots.Activate()


release loTrustedRoots
release loZip
release loEntry
release loCert