74 lines
1.8 KiB
Go
74 lines
1.8 KiB
Go
// Copyright 2020 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package https
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import (
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"net/http"
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"github.com/go-kit/kit/log"
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"golang.org/x/crypto/bcrypt"
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)
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func validateUsers(configPath string) error {
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c, err := getConfig(configPath)
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if err != nil {
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return err
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}
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for _, p := range c.Users {
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_, err = bcrypt.Cost([]byte(p))
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if err != nil {
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return err
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}
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}
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return nil
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}
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type userAuthRoundtrip struct {
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tlsConfigPath string
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handler http.Handler
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logger log.Logger
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}
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func (u *userAuthRoundtrip) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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c, err := getConfig(u.tlsConfigPath)
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if err != nil {
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u.logger.Log("msg", "Unable to parse configuration", "err", err)
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http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
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return
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}
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if len(c.Users) == 0 {
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u.handler.ServeHTTP(w, r)
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return
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}
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user, pass, ok := r.BasicAuth()
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if !ok {
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w.Header().Set("WWW-Authenticate", "Basic")
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http.Error(w, http.StatusText(http.StatusUnauthorized), http.StatusUnauthorized)
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return
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}
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if hashedPassword, ok := c.Users[user]; ok {
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if err := bcrypt.CompareHashAndPassword([]byte(hashedPassword), []byte(pass)); err == nil {
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u.handler.ServeHTTP(w, r)
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return
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}
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}
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http.Error(w, http.StatusText(http.StatusForbidden), http.StatusForbidden)
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}
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