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// Copyright (c) 2014-2018, b3log.org & hacpai.com
//
// 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
//
// https://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 main
import (
"compress/gzip"
"flag"
"html/template"
"io"
"mime"
"net/http"
_ "net/http/pprof"
"os"
"os/signal"
"runtime"
"strings"
"syscall"
"time"
"github.com/b3log/wide/conf"
"github.com/b3log/wide/editor"
"github.com/b3log/wide/event"
"github.com/b3log/wide/file"
"github.com/b3log/wide/i18n"
"github.com/b3log/wide/log"
"github.com/b3log/wide/notification"
"github.com/b3log/wide/output"
"github.com/b3log/wide/playground"
"github.com/b3log/wide/scm/git"
"github.com/b3log/wide/session"
"github.com/b3log/wide/util"
)
// Logger
var logger *log.Logger
// The only one init function in Wide.
func init() {
confPath := flag.String("conf", "conf/wide.json", "path of wide.json")
confIP := flag.String("ip", "", "this will overwrite Wide.IP if specified")
confPort := flag.String("port", "", "this will overwrite Wide.Port if specified")
confServer := flag.String("server", "", "this will overwrite Wide.Server if specified")
confLogLevel := flag.String("log_level", "", "this will overwrite Wide.LogLevel if specified")
confStaticServer := flag.String("static_server", "", "this will overwrite Wide.StaticServer if specified")
confContext := flag.String("context", "", "this will overwrite Wide.Context if specified")
confChannel := flag.String("channel", "", "this will overwrite Wide.Channel if specified")
confStat := flag.Bool("stat", false, "whether report statistics periodically")
confDocker := flag.Bool("docker", false, "whether run in a docker container")
confPlayground := flag.String("playground", "", "this will overwrite Wide.Playground if specified")
confUsersWorkspaces := flag.String("users_workspaces", "", "this will overwrite Wide.UsersWorkspaces if specified")
flag.Parse()
log.SetLevel("warn")
logger = log.NewLogger(os.Stdout)
wd := util.OS.Pwd()
if strings.HasPrefix(wd, os.TempDir()) {
logger.Error("Don't run Wide in OS' temp directory or with `go run`")
os.Exit(-1)
}
i18n.Load()
event.Load()
conf.Load(*confPath, *confIP, *confPort, *confServer, *confLogLevel, *confStaticServer, *confContext, *confChannel,
*confPlayground, *confDocker, *confUsersWorkspaces)
conf.FixedTimeCheckEnv()
session.FixedTimeSave()
session.FixedTimeRelease()
if *confStat {
session.FixedTimeReport()
}
logger.Debug("host ["+runtime.Version()+", "+runtime.GOOS+"_"+runtime.GOARCH+"], cross-compilation ",
util.Go.GetCrossPlatforms())
}
// Main.
func main() {
runtime.GOMAXPROCS(conf.Wide.MaxProcs)
initMime()
handleSignal()
// IDE
http.HandleFunc(conf.Wide.Context+"/", handlerGzWrapper(indexHandler))
http.HandleFunc(conf.Wide.Context+"/start", handlerWrapper(startHandler))
http.HandleFunc(conf.Wide.Context+"/about", handlerWrapper(aboutHandler))
http.HandleFunc(conf.Wide.Context+"/keyboard_shortcuts", handlerWrapper(keyboardShortcutsHandler))
// static resources
http.Handle(conf.Wide.Context+"/static/", http.StripPrefix(conf.Wide.Context+"/static/", http.FileServer(http.Dir("static"))))
serveSingle("/favicon.ico", "./static/favicon.ico")
// workspaces
for _, user := range conf.Users {
http.Handle(conf.Wide.Context+"/workspace/"+user.Name+"/",
http.StripPrefix(conf.Wide.Context+"/workspace/"+user.Name+"/", http.FileServer(http.Dir(user.WorkspacePath()))))
}
// session
http.HandleFunc(conf.Wide.Context+"/session/ws", handlerWrapper(session.WSHandler))
http.HandleFunc(conf.Wide.Context+"/session/save", handlerWrapper(session.SaveContentHandler))
// run
http.HandleFunc(conf.Wide.Context+"/build", handlerWrapper(output.BuildHandler))
http.HandleFunc(conf.Wide.Context+"/run", handlerWrapper(output.RunHandler))
http.HandleFunc(conf.Wide.Context+"/stop", handlerWrapper(output.StopHandler))
http.HandleFunc(conf.Wide.Context+"/go/test", handlerWrapper(output.GoTestHandler))
http.HandleFunc(conf.Wide.Context+"/go/vet", handlerWrapper(output.GoVetHandler))
http.HandleFunc(conf.Wide.Context+"/go/get", handlerWrapper(output.GoGetHandler))
http.HandleFunc(conf.Wide.Context+"/go/install", handlerWrapper(output.GoInstallHandler))
http.HandleFunc(conf.Wide.Context+"/output/ws", handlerWrapper(output.WSHandler))
// cross-compilation
http.HandleFunc(conf.Wide.Context+"/cross", handlerWrapper(output.CrossCompilationHandler))
// file tree
http.HandleFunc(conf.Wide.Context+"/files", handlerWrapper(file.GetFilesHandler))
http.HandleFunc(conf.Wide.Context+"/file/refresh", handlerWrapper(file.RefreshDirectoryHandler))
http.HandleFunc(conf.Wide.Context+"/file", handlerWrapper(file.GetFileHandler))
http.HandleFunc(conf.Wide.Context+"/file/save", handlerWrapper(file.SaveFileHandler))
http.HandleFunc(conf.Wide.Context+"/file/new", handlerWrapper(file.NewFileHandler))
http.HandleFunc(conf.Wide.Context+"/file/remove", handlerWrapper(file.RemoveFileHandler))
http.HandleFunc(conf.Wide.Context+"/file/rename", handlerWrapper(file.RenameFileHandler))
http.HandleFunc(conf.Wide.Context+"/file/search/text", handlerWrapper(file.SearchTextHandler))
http.HandleFunc(conf.Wide.Context+"/file/find/name", handlerWrapper(file.FindHandler))
// outline
http.HandleFunc(conf.Wide.Context+"/outline", handlerWrapper(file.GetOutlineHandler))
// file export/import
http.HandleFunc(conf.Wide.Context+"/file/zip/new", handlerWrapper(file.CreateZipHandler))
http.HandleFunc(conf.Wide.Context+"/file/zip", handlerWrapper(file.GetZipHandler))
http.HandleFunc(conf.Wide.Context+"/file/upload", handlerWrapper(file.UploadHandler))
http.HandleFunc(conf.Wide.Context+"/file/decompress", handlerWrapper(file.DecompressHandler))
// editor
http.HandleFunc(conf.Wide.Context+"/editor/ws", handlerWrapper(editor.WSHandler))
http.HandleFunc(conf.Wide.Context+"/go/fmt", handlerWrapper(editor.GoFmtHandler))
http.HandleFunc(conf.Wide.Context+"/autocomplete", handlerWrapper(editor.AutocompleteHandler))
http.HandleFunc(conf.Wide.Context+"/exprinfo", handlerWrapper(editor.GetExprInfoHandler))
http.HandleFunc(conf.Wide.Context+"/find/decl", handlerWrapper(editor.FindDeclarationHandler))
http.HandleFunc(conf.Wide.Context+"/find/usages", handlerWrapper(editor.FindUsagesHandler))
// shell
// http.HandleFunc(conf.Wide.Context+"/shell/ws", handlerWrapper(shell.WSHandler))
// http.HandleFunc(conf.Wide.Context+"/shell", handlerWrapper(shell.IndexHandler))
// notification
http.HandleFunc(conf.Wide.Context+"/notification/ws", handlerWrapper(notification.WSHandler))
// user
http.HandleFunc(conf.Wide.Context+"/login", handlerWrapper(session.LoginHandler))
http.HandleFunc(conf.Wide.Context+"/logout", handlerWrapper(session.LogoutHandler))
http.HandleFunc(conf.Wide.Context+"/signup", handlerWrapper(session.SignUpUserHandler))
http.HandleFunc(conf.Wide.Context+"/preference", handlerWrapper(session.PreferenceHandler))
// playground
http.HandleFunc(conf.Wide.Context+"/playground", handlerWrapper(playground.IndexHandler))
http.HandleFunc(conf.Wide.Context+"/playground/", handlerWrapper(playground.IndexHandler))
http.HandleFunc(conf.Wide.Context+"/playground/ws", handlerWrapper(playground.WSHandler))
http.HandleFunc(conf.Wide.Context+"/playground/save", handlerWrapper(playground.SaveHandler))
http.HandleFunc(conf.Wide.Context+"/playground/short-url", handlerWrapper(playground.ShortURLHandler))
http.HandleFunc(conf.Wide.Context+"/playground/build", handlerWrapper(playground.BuildHandler))
http.HandleFunc(conf.Wide.Context+"/playground/run", handlerWrapper(playground.RunHandler))
http.HandleFunc(conf.Wide.Context+"/playground/stop", handlerWrapper(playground.StopHandler))
http.HandleFunc(conf.Wide.Context+"/playground/autocomplete", handlerWrapper(playground.AutocompleteHandler))
// git
http.HandleFunc(conf.Wide.Context+"/git/clone", handlerWrapper(git.CloneHandler))
logger.Infof("Wide is running [%s]", conf.Wide.Server+conf.Wide.Context)
err := http.ListenAndServe(conf.Wide.Server, nil)
if err != nil {
logger.Error(err)
}
}
// indexHandler handles request of Wide index.
func indexHandler(w http.ResponseWriter, r *http.Request) {
if conf.Wide.Context+"/" != r.RequestURI {
http.Redirect(w, r, conf.Wide.Context+"/", http.StatusFound)
return
}
httpSession, _ := session.HTTPSession.Get(r, "wide-session")
if httpSession.IsNew {
http.Redirect(w, r, conf.Wide.Context+"/login", http.StatusFound)
return
}
username := httpSession.Values["username"].(string)
if "playground" == username { // reserved user for Playground
http.Redirect(w, r, conf.Wide.Context+"/login", http.StatusFound)
return
}
httpSession.Options.MaxAge = conf.Wide.HTTPSessionMaxAge
if "" != conf.Wide.Context {
httpSession.Options.Path = conf.Wide.Context
}
httpSession.Save(r, w)
user := conf.GetUser(username)
if nil == user {
logger.Warnf("Not found user [%s]", username)
http.Redirect(w, r, conf.Wide.Context+"/login", http.StatusFound)
return
}
locale := user.Locale
wideSessions := session.WideSessions.GetByUsername(username)
model := map[string]interface{}{"conf": conf.Wide, "i18n": i18n.GetAll(locale), "locale": locale,
"username": username, "sid": session.WideSessions.GenId(), "latestSessionContent": user.LatestSessionContent,
"pathSeparator": conf.PathSeparator, "codeMirrorVer": conf.CodeMirrorVer,
"user": user, "editorThemes": conf.GetEditorThemes(), "crossPlatforms": util.Go.GetCrossPlatforms()}
logger.Debugf("User [%s] has [%d] sessions", username, len(wideSessions))
t, err := template.ParseFiles("views/index.html")
if nil != err {
logger.Error(err)
http.Error(w, err.Error(), 500)
return
}
t.Execute(w, model)
}
// handleSignal handles system signal for graceful shutdown.
func handleSignal() {
go func() {
c := make(chan os.Signal)
signal.Notify(c, syscall.SIGINT, syscall.SIGQUIT, syscall.SIGTERM)
s := <-c
logger.Tracef("Got signal [%s]", s)
session.SaveOnlineUsers()
logger.Tracef("Saved all online user, exit")
os.Exit(0)
}()
}
// serveSingle registers the handler function for the given pattern and filename.
func serveSingle(pattern string, filename string) {
http.HandleFunc(pattern, func(w http.ResponseWriter, r *http.Request) {
http.ServeFile(w, r, filename)
})
}
// startHandler handles request of start page.
func startHandler(w http.ResponseWriter, r *http.Request) {
httpSession, _ := session.HTTPSession.Get(r, "wide-session")
if httpSession.IsNew {
http.Redirect(w, r, conf.Wide.Context+"/login", http.StatusFound)
return
}
httpSession.Options.MaxAge = conf.Wide.HTTPSessionMaxAge
if "" != conf.Wide.Context {
httpSession.Options.Path = conf.Wide.Context
}
httpSession.Save(r, w)
username := httpSession.Values["username"].(string)
locale := conf.GetUser(username).Locale
userWorkspace := conf.GetUserWorkspace(username)
sid := r.URL.Query()["sid"][0]
wSession := session.WideSessions.Get(sid)
if nil == wSession {
logger.Errorf("Session [%s] not found", sid)
}
model := map[string]interface{}{"conf": conf.Wide, "i18n": i18n.GetAll(locale), "locale": locale,
"username": username, "workspace": userWorkspace, "ver": conf.WideVersion, "sid": sid}
t, err := template.ParseFiles("views/start.html")
if nil != err {
logger.Error(err)
http.Error(w, err.Error(), 500)
return
}
t.Execute(w, model)
}
// keyboardShortcutsHandler handles request of keyboard shortcuts page.
func keyboardShortcutsHandler(w http.ResponseWriter, r *http.Request) {
httpSession, _ := session.HTTPSession.Get(r, "wide-session")
if httpSession.IsNew {
http.Redirect(w, r, conf.Wide.Context+"/login", http.StatusFound)
return
}
httpSession.Options.MaxAge = conf.Wide.HTTPSessionMaxAge
if "" != conf.Wide.Context {
httpSession.Options.Path = conf.Wide.Context
}
httpSession.Save(r, w)
username := httpSession.Values["username"].(string)
locale := conf.GetUser(username).Locale
model := map[string]interface{}{"conf": conf.Wide, "i18n": i18n.GetAll(locale), "locale": locale}
t, err := template.ParseFiles("views/keyboard_shortcuts.html")
if nil != err {
logger.Error(err)
http.Error(w, err.Error(), 500)
return
}
t.Execute(w, model)
}
// aboutHandle handles request of about page.
func aboutHandler(w http.ResponseWriter, r *http.Request) {
httpSession, _ := session.HTTPSession.Get(r, "wide-session")
if httpSession.IsNew {
http.Redirect(w, r, conf.Wide.Context+"/login", http.StatusFound)
return
}
httpSession.Options.MaxAge = conf.Wide.HTTPSessionMaxAge
if "" != conf.Wide.Context {
httpSession.Options.Path = conf.Wide.Context
}
httpSession.Save(r, w)
username := httpSession.Values["username"].(string)
locale := conf.GetUser(username).Locale
model := map[string]interface{}{"conf": conf.Wide, "i18n": i18n.GetAll(locale), "locale": locale,
"ver": conf.WideVersion, "goos": runtime.GOOS, "goarch": runtime.GOARCH, "gover": runtime.Version()}
t, err := template.ParseFiles("views/about.html")
if nil != err {
logger.Error(err)
http.Error(w, err.Error(), 500)
return
}
t.Execute(w, model)
}
// handlerWrapper wraps the HTTP Handler for some common processes.
//
// 1. panic recover
// 2. request stopwatch
// 3. i18n
func handlerWrapper(f func(w http.ResponseWriter, r *http.Request)) func(w http.ResponseWriter, r *http.Request) {
handler := panicRecover(f)
handler = stopwatch(handler)
handler = i18nLoad(handler)
return handler
}
// handlerGzWrapper wraps the HTTP Handler for some common processes.
//
// 1. panic recover
// 2. gzip response
// 3. request stopwatch
// 4. i18n
func handlerGzWrapper(f func(w http.ResponseWriter, r *http.Request)) func(w http.ResponseWriter, r *http.Request) {
handler := panicRecover(f)
handler = gzipWrapper(handler)
handler = stopwatch(handler)
handler = i18nLoad(handler)
return handler
}
// gzipWrapper wraps the process with response gzip.
func gzipWrapper(f func(http.ResponseWriter, *http.Request)) func(w http.ResponseWriter, r *http.Request) {
return func(w http.ResponseWriter, r *http.Request) {
if !strings.Contains(r.Header.Get("Accept-Encoding"), "gzip") {
f(w, r)
return
}
w.Header().Set("Content-Encoding", "gzip")
gz := gzip.NewWriter(w)
defer gz.Close()
gzr := gzipResponseWriter{Writer: gz, ResponseWriter: w}
f(gzr, r)
}
}
// i18nLoad wraps the i18n process.
func i18nLoad(handler func(w http.ResponseWriter, r *http.Request)) func(w http.ResponseWriter, r *http.Request) {
return func(w http.ResponseWriter, r *http.Request) {
i18n.Load()
handler(w, r)
}
}
// stopwatch wraps the request stopwatch process.
func stopwatch(handler func(w http.ResponseWriter, r *http.Request)) func(w http.ResponseWriter, r *http.Request) {
return func(w http.ResponseWriter, r *http.Request) {
start := time.Now()
defer func() {
logger.Tracef("[%s, %s, %s]", r.Method, r.RequestURI, time.Since(start))
}()
handler(w, r)
}
}
// panicRecover wraps the panic recover process.
func panicRecover(handler func(w http.ResponseWriter, r *http.Request)) func(w http.ResponseWriter, r *http.Request) {
return func(w http.ResponseWriter, r *http.Request) {
defer util.Recover()
handler(w, r)
}
}
// initMime initializes mime types.
//
// We can't get the mime types on some OS (such as Windows XP) by default, so initializes them here.
func initMime() {
mime.AddExtensionType(".css", "text/css")
mime.AddExtensionType(".js", "application/x-javascript")
mime.AddExtensionType(".json", "application/json")
}
// gzipResponseWriter represents a gzip response writer.
type gzipResponseWriter struct {
io.Writer
http.ResponseWriter
}
// Write writes response with appropriate 'Content-Type'.
func (w gzipResponseWriter) Write(b []byte) (int, error) {
if "" == w.Header().Get("Content-Type") {
// If no content type, apply sniffing algorithm to un-gzipped body.
w.Header().Set("Content-Type", http.DetectContentType(b))
}
return w.Writer.Write(b)
}