Get the Server Certificate from a TLS Connection

See more Socket/SSL/TLS Examples

Demonstrates Socket.GetServerCert, which copies the certificate presented by the remote TLS server into a Cert object for inspection.

--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @success int
    SELECT @success = 0

    DECLARE @socket int
    EXEC @hr = sp_OACreate 'Chilkat.Socket', @socket OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    --  Connect to the server using TLS.
    DECLARE @bTls int
    SELECT @bTls = 1
    DECLARE @maxWaitMs int
    SELECT @maxWaitMs = 5000
    EXEC sp_OAMethod @socket, 'Connect', @success OUT, 'example.com', 5000, @bTls, @maxWaitMs
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @socket, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @socket
        RETURN
      END

    --  Copy the certificate presented by the remote TLS server, then inspect it.  This can be used to
    --  validate the server's identity.
    DECLARE @cert int
    EXEC @hr = sp_OACreate 'Chilkat.Cert', @cert OUT

    EXEC sp_OAMethod @socket, 'GetServerCert', @success OUT, @cert
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @socket, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @socket
        EXEC @hr = sp_OADestroy @cert
        RETURN
      END

    EXEC sp_OAGetProperty @cert, 'SubjectCN', @sTmp0 OUT
    PRINT 'Server certificate subject: ' + @sTmp0

    EXEC sp_OAGetProperty @cert, 'IssuerCN', @sTmp0 OUT
    PRINT 'Issued by: ' + @sTmp0

    EXEC @hr = sp_OADestroy @socket
    EXEC @hr = sp_OADestroy @cert


END
GO