frp/pkg/util/http/server.go

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// Copyright 2023 The frp Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package http
import (
"crypto/tls"
"net"
"net/http"
"net/http/pprof"
"strconv"
"time"
"github.com/gorilla/mux"
"github.com/fatedier/frp/assets"
v1 "github.com/fatedier/frp/pkg/config/v1"
netpkg "github.com/fatedier/frp/pkg/util/net"
)
var (
defaultReadTimeout = 60 * time.Second
defaultWriteTimeout = 60 * time.Second
)
type Server struct {
addr string
ln net.Listener
tlsCfg *tls.Config
router *mux.Router
hs *http.Server
authMiddleware mux.MiddlewareFunc
}
func NewServer(cfg v1.WebServerConfig) (*Server, error) {
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assets.Load(cfg.AssetsDir)
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addr := net.JoinHostPort(cfg.Addr, strconv.Itoa(cfg.Port))
if addr == ":" {
addr = ":http"
}
ln, err := net.Listen("tcp", addr)
if err != nil {
return nil, err
}
router := mux.NewRouter()
hs := &http.Server{
Addr: addr,
Handler: router,
ReadTimeout: defaultReadTimeout,
WriteTimeout: defaultWriteTimeout,
}
s := &Server{
addr: addr,
ln: ln,
hs: hs,
router: router,
}
if cfg.PprofEnable {
s.registerPprofHandlers()
}
if cfg.TLS != nil {
cert, err := tls.LoadX509KeyPair(cfg.TLS.CertFile, cfg.TLS.KeyFile)
if err != nil {
return nil, err
}
s.tlsCfg = &tls.Config{
Certificates: []tls.Certificate{cert},
}
}
s.authMiddleware = netpkg.NewHTTPAuthMiddleware(cfg.User, cfg.Password).SetAuthFailDelay(200 * time.Millisecond).Middleware
return s, nil
}
func (s *Server) Address() string {
return s.addr
}
func (s *Server) Run() error {
ln := s.ln
if s.tlsCfg != nil {
ln = tls.NewListener(ln, s.tlsCfg)
}
return s.hs.Serve(ln)
}
func (s *Server) Close() error {
return s.hs.Close()
}
type RouterRegisterHelper struct {
Router *mux.Router
AssetsFS http.FileSystem
AuthMiddleware mux.MiddlewareFunc
}
func (s *Server) RouteRegister(register func(helper *RouterRegisterHelper)) {
register(&RouterRegisterHelper{
Router: s.router,
AssetsFS: assets.FileSystem,
AuthMiddleware: s.authMiddleware,
})
}
func (s *Server) registerPprofHandlers() {
s.router.HandleFunc("/debug/pprof/cmdline", pprof.Cmdline)
s.router.HandleFunc("/debug/pprof/profile", pprof.Profile)
s.router.HandleFunc("/debug/pprof/symbol", pprof.Symbol)
s.router.HandleFunc("/debug/pprof/trace", pprof.Trace)
s.router.PathPrefix("/debug/pprof/").HandlerFunc(pprof.Index)
}