(PureBasic) Upload to Tumbleweed SecureTransport FTPS Server

Demonstrates how to connect, authenticate, and upload file to a Tumbleweed Secure Transport SSL FTP Server. Instead of providing a login name and password, you pass the string "site-auth" for the username, and an empty string for the password. You must also provide a client-side digital certificate -- as the certificate's credentials and validity are used to authenticate.

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IncludeFile "CkCertStore.pb"
IncludeFile "CkCert.pb"
IncludeFile "CkFtp2.pb"

Procedure ChilkatExample()

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

    ftp.i = CkFtp2::ckCreate()
    If ftp.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    ; This code has been tested with the Tumbleweed server
    ; at sft.wellsfargo.com
    CkFtp2::setCkHostname(ftp, "sft.wellsfargo.com")

    ; Use these exact strings for the username and password:
    CkFtp2::setCkUsername(ftp, "site-auth")
    CkFtp2::setCkPassword(ftp, "")

    ; Establish an AUTH SSL secure channel after connecting.
    ; Your client-side certificate is used for authentication when
    ; the SSL channel is established.
    CkFtp2::setCkAuthSsl(ftp, 1)

    ; The Ssl property is for establishing an implicit SSL connection
    ; on port 990.  Do not set it.
    CkFtp2::setCkSsl(ftp, 0)

    ; Load a certificate from a .pfx
    ; A PFX may contain several certs, including the certificates
    ; in a chain of authority.
    certStore.i = CkCertStore::ckCreate()
    If certStore.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    password.s = "***"
    ; Load the certs from a PFX into an in-memory certificate store:
    success.i = CkCertStore::ckLoadPfxFile(certStore,"my.pfx",password)
    If success <> 1
        Debug CkCertStore::ckLastErrorText(certStore)
        CkFtp2::ckDispose(ftp)
        CkCertStore::ckDispose(certStore)
        ProcedureReturn
    EndIf

    ; Find the exact cert we'll use:
    cert.i = CkCertStore::ckFindCertBySubject(certStore,"My Certificate 123 ABC")
    If CkCertStore::ckLastMethodSuccess(certStore) = 0
        Debug "Certificate not found!"
        CkFtp2::ckDispose(ftp)
        CkCertStore::ckDispose(certStore)
        ProcedureReturn
    EndIf

    ; Tell the Chilkat FTP2 component to use the client-side
    ; cert for the SSL connection:
    success = CkFtp2::ckSetSslClientCert(ftp,cert)

    ; Connect and authenticate with the FTP server.
    success = CkFtp2::ckConnect(ftp)
    If success <> 1
        Debug CkFtp2::ckLastErrorText(ftp)
        CkFtp2::ckDispose(ftp)
        CkCertStore::ckDispose(certStore)
        ProcedureReturn
    Else
        ; LastErrorText contains information even when
        ; successful. This allows you to visually verify
        ; that the secure connection actually occurred.
        Debug CkFtp2::ckLastErrorText(ftp)
    EndIf

    Debug "Secure FTP Channel Established!"

    ; Change to the remote directory where the file will be
    ; uploaded.  If your file is to be uploaded to the FTP user 
    ; account's home directory, this is not necessary.
    success = CkFtp2::ckChangeRemoteDir(ftp,"someSubDir")
    If success <> 1
        Debug CkFtp2::ckLastErrorText(ftp)
        CkFtp2::ckDispose(ftp)
        CkCertStore::ckDispose(certStore)
        ProcedureReturn
    EndIf

    ; You may include an absolute or relative path with the 
    ; local filename.  If no path is included, the file should 
    ; be present in the current working directory of the calling
    ; process.
    localFilename.s = "someFile.dat"
    remoteFilename.s = "someFile.dat"

    ; Upload the file.
    success = CkFtp2::ckPutFile(ftp,localFilename,remoteFilename)
    If success <> 1
        Debug CkFtp2::ckLastErrorText(ftp)
        CkFtp2::ckDispose(ftp)
        CkCertStore::ckDispose(certStore)
        ProcedureReturn
    EndIf

    success = CkFtp2::ckDisconnect(ftp)


    CkFtp2::ckDispose(ftp)
    CkCertStore::ckDispose(certStore)


    ProcedureReturn
EndProcedure