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107 lines
2.8 KiB
107 lines
2.8 KiB
// Copyright 2017 clair authors
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//
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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 api
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import (
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"context"
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"crypto/tls"
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"crypto/x509"
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"io/ioutil"
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"net/http"
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"time"
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log "github.com/sirupsen/logrus"
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"github.com/coreos/clair/api/v3"
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"github.com/coreos/clair/database"
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"github.com/coreos/clair/pkg/stopper"
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)
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const timeoutResponse = `{"Error":{"Message":"Clair failed to respond within the configured timeout window.","Type":"Timeout"}}`
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// Config is the configuration for the API service.
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type Config struct {
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Addr string
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HealthAddr string
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Timeout time.Duration
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CertFile, KeyFile, CAFile string
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}
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func Run(cfg *Config, store database.Datastore) {
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tlsConfig, err := tlsClientConfig(cfg.CAFile)
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if err != nil {
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log.WithError(err).Fatal("could not initialize client cert authentication")
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}
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if tlsConfig != nil {
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log.Info("main API configured with client certificate authentication")
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}
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v3.Run(cfg.Addr, tlsConfig, cfg.CertFile, cfg.KeyFile, store)
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}
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func RunHealth(cfg *Config, store database.Datastore, st *stopper.Stopper) {
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defer st.End()
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// Do not run the API service if there is no config.
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if cfg == nil {
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log.Info("health API service is disabled.")
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return
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}
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log.WithField("addr", cfg.HealthAddr).Info("starting health API")
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srv := http.Server{
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Addr: cfg.HealthAddr,
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Handler: http.TimeoutHandler(newHealthHandler(store), cfg.Timeout, timeoutResponse),
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}
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go func() {
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<-st.Chan()
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srv.Shutdown(context.TODO())
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}()
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err := srv.ListenAndServe()
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if err != nil && err != http.ErrServerClosed {
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log.Fatal(err)
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}
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log.Info("health API stopped")
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}
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// tlsClientConfig initializes a *tls.Config using the given CA. The resulting
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// *tls.Config is meant to be used to configure an HTTP server to do client
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// certificate authentication.
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//
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// If no CA is given, a nil *tls.Config is returned; no client certificate will
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// be required and verified. In other words, authentication will be disabled.
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func tlsClientConfig(caPath string) (*tls.Config, error) {
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if caPath == "" {
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return nil, nil
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}
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caCert, err := ioutil.ReadFile(caPath)
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if err != nil {
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return nil, err
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}
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caCertPool := x509.NewCertPool()
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caCertPool.AppendCertsFromPEM(caCert)
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tlsConfig := &tls.Config{
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ClientCAs: caCertPool,
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ClientAuth: tls.RequireAndVerifyClientCert,
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}
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return tlsConfig, nil
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}
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