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// 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"
"github.com/prometheus/client_golang/prometheus/promhttp"
"code.gitea.io/gitea/modules/context"
"code.gitea.io/gitea/modules/setting"
)
// Metrics validate auth token and render prometheus metrics
func Metrics(ctx *context.Context) {
if setting.Metrics.Token == "" {
promhttp.Handler().ServeHTTP(ctx.Resp, ctx.Req.Request)
return
}
header := ctx.Req.Header.Get("Authorization")
if header == "" {
ctx.Error(401)
return
}
got := []byte(header)
want := []byte("Bearer " + setting.Metrics.Token)
if subtle.ConstantTimeCompare(got, want) != 1 {
ctx.Error(401)
return
}
promhttp.Handler().ServeHTTP(ctx.Resp, ctx.Req.Request)
}
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