summaryrefslogtreecommitdiffstats
path: root/routers/web/metrics.go
blob: 46c13f0a2440205629384f9a2612cb42bdcdc373 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
// Copyright 2018 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT

package web

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, "", http.StatusUnauthorized)
		return
	}
	got := []byte(header)
	want := []byte("Bearer " + setting.Metrics.Token)
	if subtle.ConstantTimeCompare(got, want) != 1 {
		http.Error(resp, "", http.StatusUnauthorized)
		return
	}
	promhttp.Handler().ServeHTTP(resp, req)
}