in oauthproxy.go [422:434]
func (p *OAuthProxy) GetRedirect(req *http.Request) (redirect string, err error) {
err = req.ParseForm()
if err != nil {
return
}
redirect = req.Form.Get("rd")
if redirect == "" || !strings.HasPrefix(redirect, "/") || strings.HasPrefix(redirect, "//") {
redirect = "/"
}
return
}