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authentik/internal/web/web.go

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package web
import (
"context"
"errors"
"net"
"net/http"
"sync"
"github.com/gorilla/handlers"
"github.com/gorilla/mux"
log "github.com/sirupsen/logrus"
"goauthentik.io/internal/config"
)
type WebServer struct {
Bind string
BindTLS bool
LegacyProxy bool
stop chan struct{} // channel for waiting shutdown
m *mux.Router
lh *mux.Router
log *log.Entry
}
func NewWebServer() *WebServer {
mainHandler := mux.NewRouter()
mainHandler.Use(recoveryMiddleware())
mainHandler.Use(handlers.ProxyHeaders)
mainHandler.Use(handlers.CompressHandler)
logginRouter := mainHandler.NewRoute().Subrouter()
logginRouter.Use(loggingMiddleware)
ws := &WebServer{
LegacyProxy: true,
m: mainHandler,
lh: logginRouter,
log: log.WithField("logger", "authentik.g.web"),
}
ws.configureStatic()
ws.configureProxy()
return ws
}
func (ws *WebServer) Run() {
wg := sync.WaitGroup{}
wg.Add(2)
go func() {
defer wg.Done()
ws.listenPlain()
}()
go func() {
defer wg.Done()
ws.listenTLS()
}()
wg.Done()
}
func (ws *WebServer) listenPlain() {
ln, err := net.Listen("tcp", config.G.Web.Listen)
if err != nil {
ws.log.WithError(err).Fatalf("failed to listen")
}
ws.log.WithField("addr", config.G.Web.Listen).Info("Running")
ws.serve(ln)
ws.log.WithField("addr", config.G.Web.Listen).Info("Running")
http.ListenAndServe(config.G.Web.Listen, ws.m)
}
func (ws *WebServer) serve(listener net.Listener) {
srv := &http.Server{
Handler: ws.m,
}
// See https://golang.org/pkg/net/http/#Server.Shutdown
idleConnsClosed := make(chan struct{})
go func() {
<-ws.stop // wait notification for stopping server
// We received an interrupt signal, shut down.
if err := srv.Shutdown(context.Background()); err != nil {
// Error from closing listeners, or context timeout:
ws.log.Printf("HTTP server Shutdown: %v", err)
}
close(idleConnsClosed)
}()
err := srv.Serve(listener)
if err != nil && !errors.Is(err, http.ErrServerClosed) {
ws.log.Errorf("ERROR: http.Serve() - %s", err)
}
<-idleConnsClosed
}