Ya'know, my spider sense is tingling on this one. I'm trying to think of legitimate reasons one would want a web proxy on a shared host, as a CGI script, especially one that supports https.

I'm guessing that this is someone who wants to hide where they are coming from, for bad reasons, and isn't smart enough to know that there are already a few dozen means by which to do this already.

I'd shy away from helping someone do bad things until we know better what the purpose of this action must be.