Implement HTTPS-only pages

- Check `config.json` for `httpsonly` attribute
- Store value against custom domain or group/project pair
- Respond with 301 redirect to HTTP requests to these domains/projects

Re: https://gitlab.com/gitlab-org/gitlab-ce/issues/28857

1 files changed, 47 insertions, 25 deletions

diff --git a/app.go b/app.go
index afc43466..f7b07976 100644
--- a/app.go
+++ b/app.go
@@ -66,49 +66,71 @@ func (a *theApp) healthCheck(w http.ResponseWriter, r *http.Request, https bool)
 	}
 }
 
-func (a *theApp) serveContent(ww http.ResponseWriter, r *http.Request, https bool) {
-	w := newLoggingResponseWriter(ww)
-	defer w.Log(r)
+func (a *theApp) redirectToHTTPS(w http.ResponseWriter, r *http.Request, statusCode int) {
+	u := *r.URL
+	u.Scheme = "https"
+	u.Host = r.Host
+	u.User = nil
 
-	metrics.SessionsActive.Inc()
-	defer metrics.SessionsActive.Dec()
+	http.Redirect(w, r, u.String(), statusCode)
+}
 
+func (a *theApp) getHostAndDomain(r *http.Request) (host string, domain *domain) {
+	host, _, err := net.SplitHostPort(r.Host)
+	if err != nil {
+		host = r.Host
+	}
+
+	return host, a.domain(host)
+}
+
+func (a *theApp) tryAuxiliaryHandlers(w http.ResponseWriter, r *http.Request, https bool, host string, domain *domain) bool {
 	// short circuit content serving to check for a status page
 	if r.RequestURI == a.appConfig.StatusPath {
-		a.healthCheck(&w, r, https)
-		return
+		a.healthCheck(w, r, https)
+		return true
 	}
 
 	// Add auto redirect
 	if !https && a.RedirectHTTP {
-		u := *r.URL
-		u.Scheme = "https"
-		u.Host = r.Host
-		u.User = nil
-
-		http.Redirect(&w, r, u.String(), 307)
-		return
-	}
-
-	host, _, err := net.SplitHostPort(r.Host)
-	if err != nil {
-		host = r.Host
+		a.redirectToHTTPS(w, r, http.StatusTemporaryRedirect)
+		return true
 	}
 
 	// In the event a host is prefixed with the artifact prefix an artifact
 	// value is created, and an attempt to proxy the request is made
-	if a.Artifact.TryMakeRequest(host, &w, r) {
-		return
+	if a.Artifact.TryMakeRequest(host, w, r) {
+		return true
 	}
 
 	if !a.isReady() {
-		httperrors.Serve503(&w)
-		return
+		httperrors.Serve503(w)
+		return true
 	}
 
-	domain := a.domain(host)
 	if domain == nil {
-		httperrors.Serve404(&w)
+		httperrors.Serve404(w)
+		return true
+	}
+
+	if !https && domain.isHTTPSOnly(r) {
+		a.redirectToHTTPS(w, r, http.StatusMovedPermanently)
+		return true
+	}
+
+	return false
+}
+
+func (a *theApp) serveContent(ww http.ResponseWriter, r *http.Request, https bool) {
+	w := newLoggingResponseWriter(ww)
+	defer w.Log(r)
+
+	metrics.SessionsActive.Inc()
+	defer metrics.SessionsActive.Dec()
+
+	host, domain := a.getHostAndDomain(r)
+
+	if a.tryAuxiliaryHandlers(&w, r, https, host, domain) {
 		return
 	}