PowerBuilder

FTP Connect, Examine Server Certificate, and then Authenticate

See more FTP Examples

Demonstrates how to connect to an FTP server, examine the server's SSL/TLS certificate, and then, if it meets the application's security requirements, proceed to authenticate. PowerBuilder

integer li_rc
integer li_Success
oleobject loo_Ftp
oleobject loo_ServerCert

li_Success = 0

// This example assumes Chilkat Ftp2 to have been previously unlocked.
// See Unlock Ftp2 for sample code.

loo_Ftp = create oleobject
li_rc = loo_Ftp.ConnectToNewObject("Chilkat.Ftp2")
if li_rc < 0 then
    destroy loo_Ftp
    MessageBox("Error","Connecting to COM object failed")
    return
end if

loo_Ftp.Hostname = "www.authtls-ftps-server.com"
loo_Ftp.Username = "FTP_LOGIN"
loo_Ftp.Password = "FTP_PASSWORD"
loo_Ftp.AuthTls = 1
loo_Ftp.Port = 21

// Connect to the FTP server using explicit TLS (AUTH TLS).
li_Success = loo_Ftp.ConnectOnly()
if li_Success = 0 then
    Write-Debug loo_Ftp.LastErrorText
    destroy loo_Ftp
    return
end if

// Get the FTP server's certificate.
loo_ServerCert = create oleobject
li_rc = loo_ServerCert.ConnectToNewObject("Chilkat.Cert")

li_Success = loo_Ftp.GetServerCert(loo_ServerCert)
if li_Success = 0 then
    Write-Debug loo_Ftp.LastErrorText
    destroy loo_Ftp
    destroy loo_ServerCert
    return
end if

// Now that we have the certificate, we can check it in any way we desire.
// (See the online reference documentation for the certificate object's methods
// and properties)...

// Assuming the certificate is OK, proceed to authenticate with the FTP server.
li_Success = loo_Ftp.LoginAfterConnectOnly()
if li_Success = 0 then
    Write-Debug loo_Ftp.LastErrorText
    destroy loo_Ftp
    destroy loo_ServerCert
    return
end if

// 
// Proceed with uploading/download files, etc...
// 

loo_Ftp.Disconnect()
Write-Debug "Success."


destroy loo_Ftp
destroy loo_ServerCert