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// Copyright 2022 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package vcweb
import (
"log"
"net/http"
)
// insecureHandler redirects requests to the same host and path but using the
// "http" scheme instead of "https".
type insecureHandler struct{}
func (h *insecureHandler) Available() bool { return true }
func (h *insecureHandler) Handler(dir string, env []string, logger *log.Logger) (http.Handler, error) {
// The insecure-redirect handler implementation doesn't depend or dir or env.
//
// The only effect of the directory is to determine which prefix the caller
// will strip from the request before passing it on to this handler.
return h, nil
}
func (h *insecureHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
if req.Host == "" && req.URL.Host == "" {
http.Error(w, "no Host provided in request", http.StatusBadRequest)
return
}
// Note that if the handler is wrapped with http.StripPrefix, the prefix
// will remain stripped in the redirected URL, preventing redirect loops
// if the scheme is already "http".
u := *req.URL
u.Scheme = "http"
u.User = nil
u.Host = req.Host
http.Redirect(w, req, u.String(), http.StatusFound)
}
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