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// Copyright 2014 The Gogs 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 cmd
import (
"fmt"
"net"
"net/http"
"net/http/fcgi"
_ "net/http/pprof" // Used for debugging if enabled and a web server is running
"os"
"strings"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/routers"
"code.gitea.io/gitea/routers/routes"
context2 "github.com/gorilla/context"
"github.com/unknwon/com"
"github.com/urfave/cli"
"golang.org/x/crypto/acme/autocert"
ini "gopkg.in/ini.v1"
)
// CmdWeb represents the available web sub-command.
var CmdWeb = cli.Command{
Name: "web",
Usage: "Start Gitea web server",
Description: `Gitea web server is the only thing you need to run,
and it takes care of all the other things for you`,
Action: runWeb,
Flags: []cli.Flag{
cli.StringFlag{
Name: "port, p",
Value: "3000",
Usage: "Temporary port number to prevent conflict",
},
cli.StringFlag{
Name: "pid, P",
Value: "/var/run/gitea.pid",
Usage: "Custom pid file path",
},
},
}
func runHTTPRedirector() {
source := fmt.Sprintf("%s:%s", setting.HTTPAddr, setting.PortToRedirect)
dest := strings.TrimSuffix(setting.AppURL, "/")
log.Info("Redirecting: %s to %s", source, dest)
handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
target := dest + r.URL.Path
if len(r.URL.RawQuery) > 0 {
target += "?" + r.URL.RawQuery
}
http.Redirect(w, r, target, http.StatusTemporaryRedirect)
})
var err = runHTTP(source, context2.ClearHandler(handler))
if err != nil {
log.Fatal("Failed to start port redirection: %v", err)
}
}
func runLetsEncrypt(listenAddr, domain, directory, email string, m http.Handler) error {
certManager := autocert.Manager{
Prompt: autocert.AcceptTOS,
HostPolicy: autocert.HostWhitelist(domain),
Cache: autocert.DirCache(directory),
Email: email,
}
go func() {
log.Info("Running Let's Encrypt handler on %s", setting.HTTPAddr+":"+setting.PortToRedirect)
var err = http.ListenAndServe(setting.HTTPAddr+":"+setting.PortToRedirect, certManager.HTTPHandler(http.HandlerFunc(runLetsEncryptFallbackHandler))) // all traffic coming into HTTP will be redirect to HTTPS automatically (LE HTTP-01 validation happens here)
if err != nil {
log.Fatal("Failed to start the Let's Encrypt handler on port %s: %v", setting.PortToRedirect, err)
}
}()
server := &http.Server{
Addr: listenAddr,
Handler: m,
TLSConfig: certManager.TLSConfig(),
}
return server.ListenAndServeTLS("", "")
}
func runLetsEncryptFallbackHandler(w http.ResponseWriter, r *http.Request) {
if r.Method != "GET" && r.Method != "HEAD" {
http.Error(w, "Use HTTPS", http.StatusBadRequest)
return
}
// Remove the trailing slash at the end of setting.AppURL, the request
// URI always contains a leading slash, which would result in a double
// slash
target := strings.TrimRight(setting.AppURL, "/") + r.URL.RequestURI()
http.Redirect(w, r, target, http.StatusFound)
}
func runWeb(ctx *cli.Context) error {
if ctx.IsSet("pid") {
setting.CustomPID = ctx.String("pid")
}
routers.GlobalInit()
m := routes.NewMacaron()
routes.RegisterRoutes(m)
// Flag for port number in case first time run conflict.
if ctx.IsSet("port") {
setting.AppURL = strings.Replace(setting.AppURL, setting.HTTPPort, ctx.String("port"), 1)
setting.HTTPPort = ctx.String("port")
switch setting.Protocol {
case setting.UnixSocket:
case setting.FCGI:
default:
// Save LOCAL_ROOT_URL if port changed
cfg := ini.Empty()
if com.IsFile(setting.CustomConf) {
// Keeps custom settings if there is already something.
if err := cfg.Append(setting.CustomConf); err != nil {
return fmt.Errorf("Failed to load custom conf '%s': %v", setting.CustomConf, err)
}
}
defaultLocalURL := string(setting.Protocol) + "://"
if setting.HTTPAddr == "0.0.0.0" {
defaultLocalURL += "localhost"
} else {
defaultLocalURL += setting.HTTPAddr
}
defaultLocalURL += ":" + setting.HTTPPort + "/"
cfg.Section("server").Key("LOCAL_ROOT_URL").SetValue(defaultLocalURL)
if err := cfg.SaveTo(setting.CustomConf); err != nil {
return fmt.Errorf("Error saving generated JWT Secret to custom config: %v", err)
}
}
}
listenAddr := setting.HTTPAddr
if setting.Protocol != setting.UnixSocket {
listenAddr += ":" + setting.HTTPPort
}
log.Info("Listen: %v://%s%s", setting.Protocol, listenAddr, setting.AppSubURL)
if setting.LFS.StartServer {
log.Info("LFS server enabled")
}
if setting.EnablePprof {
go func() {
log.Info("Starting pprof server on localhost:6060")
log.Info("%v", http.ListenAndServe("localhost:6060", nil))
}()
}
var err error
switch setting.Protocol {
case setting.HTTP:
err = runHTTP(listenAddr, context2.ClearHandler(m))
case setting.HTTPS:
if setting.EnableLetsEncrypt {
err = runLetsEncrypt(listenAddr, setting.Domain, setting.LetsEncryptDirectory, setting.LetsEncryptEmail, context2.ClearHandler(m))
break
}
if setting.RedirectOtherPort {
go runHTTPRedirector()
}
err = runHTTPS(listenAddr, setting.CertFile, setting.KeyFile, context2.ClearHandler(m))
case setting.FCGI:
var listener net.Listener
listener, err = net.Listen("tcp", listenAddr)
if err != nil {
log.Fatal("Failed to bind %s: %v", listenAddr, err)
}
defer func() {
if err := listener.Close(); err != nil {
log.Fatal("Failed to stop server: %v", err)
}
}()
err = fcgi.Serve(listener, context2.ClearHandler(m))
case setting.UnixSocket:
if err := os.Remove(listenAddr); err != nil && !os.IsNotExist(err) {
log.Fatal("Failed to remove unix socket directory %s: %v", listenAddr, err)
}
var listener *net.UnixListener
listener, err = net.ListenUnix("unix", &net.UnixAddr{Name: listenAddr, Net: "unix"})
if err != nil {
break // Handle error after switch
}
// FIXME: add proper implementation of signal capture on all protocols
// execute this on SIGTERM or SIGINT: listener.Close()
if err = os.Chmod(listenAddr, os.FileMode(setting.UnixSocketPermission)); err != nil {
log.Fatal("Failed to set permission of unix socket: %v", err)
}
err = http.Serve(listener, context2.ClearHandler(m))
default:
log.Fatal("Invalid protocol: %s", setting.Protocol)
}
if err != nil {
log.Fatal("Failed to start server: %v", err)
}
return nil
}
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