// Copyright 2018 The Gitea Authors. All rights reserved. // Use of this source code is governed by a MIT-style // license that can be found in the LICENSE file. package routers import ( "crypto/subtle" "net/http" "code.gitea.io/gitea/modules/setting" "github.com/prometheus/client_golang/prometheus/promhttp" ) // Metrics validate auth token and render prometheus metrics func Metrics(resp http.ResponseWriter, req *http.Request) { if setting.Metrics.Token == "" { promhttp.Handler().ServeHTTP(resp, req) return } header := req.Header.Get("Authorization") if header == "" { http.Error(resp, "", 401) return } got := []byte(header) want := []byte("Bearer " + setting.Metrics.Token) if subtle.ConstantTimeCompare(got, want) != 1 { http.Error(resp, "", 401) return } promhttp.Handler().ServeHTTP(resp, req) }