C++ IIS ISAPI Filter

Require IIS C++ ISAPI filter to prevent image linking from external sites. e.g. Site A contains [login to view URL] Site B is not authorized, but they have links to Site A's [login to view URL] This filter will allow a list of allowed referrer's to link. If the referrer is not in the list, then an alternate image will be shown. ## Deliverables Tested and Working ISAPI filter ! Filter will read from [login to view URL] [AllowedURLS] URL=[login to view URL] URL=[login to view URL] URL=[login to view URL] [Alternate] showimageurl=/images/[login to view URL] [BlankReferrer] allow=true or false if referrer passed by the browser does not meet the above listing of allowed URL's then the image in showimageurl is sent back to the browser instead. The above sample ini would do a simple pattern match allowing [login to view URL], [login to view URL], [login to view URL], [login to view URL], [login to view URL] [login to view URL], [login to view URL], [login to view URL] to display the image but any other referrer would show the alternate image. Must be reliable, fast and accurate. ## Deadline information Exact configuration can be discussed.