1// Copyright 2018 The Gitea Authors. All rights reserved. 2// Use of this source code is governed by a MIT-style 3// license that can be found in the LICENSE file. 4 5package web 6 7import ( 8 "crypto/subtle" 9 "net/http" 10 11 "code.gitea.io/gitea/modules/setting" 12 13 "github.com/prometheus/client_golang/prometheus/promhttp" 14) 15 16// Metrics validate auth token and render prometheus metrics 17func Metrics(resp http.ResponseWriter, req *http.Request) { 18 if setting.Metrics.Token == "" { 19 promhttp.Handler().ServeHTTP(resp, req) 20 return 21 } 22 header := req.Header.Get("Authorization") 23 if header == "" { 24 http.Error(resp, "", 401) 25 return 26 } 27 got := []byte(header) 28 want := []byte("Bearer " + setting.Metrics.Token) 29 if subtle.ConstantTimeCompare(got, want) != 1 { 30 http.Error(resp, "", 401) 31 return 32 } 33 promhttp.Handler().ServeHTTP(resp, req) 34} 35