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Clean up app.Run()

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This commit is contained in:
Iwasaki Yudai 2015-08-22 12:51:37 +09:00
parent 9b77c32d7c
commit 8923220528
1 changed files with 55 additions and 43 deletions
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98
app/app.go
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@ -42,63 +42,41 @@ func New(options Options) *App {
}
}
func loggerHandler(h http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
log.Printf("%s %s", r.Method, r.URL.Path)
h.ServeHTTP(w, r)
})
}
func basicAuthHandler(h http.Handler, cred string) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
token := strings.SplitN(r.Header.Get("Authorization"), " ", 2)
if len(token) != 2 || strings.ToLower(token[0]) != "basic" {
w.Header().Set("WWW-Authenticate", `Basic realm="GoTTY"`)
http.Error(w, "Bad Request", http.StatusUnauthorized)
return
}
payload, err := base64.StdEncoding.DecodeString(token[1])
if err != nil {
http.Error(w, "Internal Server Error", http.StatusInternalServerError)
return
}
if cred != string(payload) {
w.Header().Set("WWW-Authenticate", `Basic realm="GoTTY"`)
http.Error(w, "authorization failed", http.StatusUnauthorized)
return
}
h.ServeHTTP(w, r)
})
}
func (app *App) Run() error {
path := "/"
if app.options.RandomUrl {
randomPath := generateRandomString(8)
path = "/" + randomPath + "/"
path += generateRandomString(8)
}
fs := http.StripPrefix(path, http.FileServer(&assetfs.AssetFS{Asset: Asset, AssetDir: AssetDir, Prefix: "bindata"}))
http.Handle(path, fs)
http.HandleFunc(path+"ws", app.handler)
endpoint := app.options.Address + ":" + app.options.Port
log.Printf("Server is running at %s, command: %s", endpoint+path, strings.Join(app.options.Command, " "))
handler := http.Handler(http.DefaultServeMux)
handler = loggerHandler(handler)
staticHandler := http.FileServer(
&assetfs.AssetFS{Asset: Asset, AssetDir: AssetDir, Prefix: "bindata"},
)
wsHandler := http.HandlerFunc(app.handleWS)
var siteMux = http.NewServeMux()
siteMux.Handle(path, staticHandler)
siteMux.Handle(path+"ws", wsHandler)
siteHandler := http.Handler(siteMux)
if app.options.Credential != "" {
handler = basicAuthHandler(handler, app.options.Credential)
log.Printf("Using Basic Authentication")
siteHandler = wrapBasicAuth(siteHandler, app.options.Credential)
}
err := http.ListenAndServe(endpoint, handler)
if err != nil {
siteHandler = wrapLogger(siteHandler)
log.Printf("Server is running at %s, command: %s", endpoint+path, strings.Join(app.options.Command, " "))
if err := http.ListenAndServe(endpoint, siteHandler); err != nil {
return err
}
return nil
}
func (app *App) handler(w http.ResponseWriter, r *http.Request) {
func (app *App) handleWS(w http.ResponseWriter, r *http.Request) {
log.Printf("New client connected: %s", r.RemoteAddr)
if r.Method != "GET" {
@ -131,6 +109,40 @@ func (app *App) handler(w http.ResponseWriter, r *http.Request) {
context.goHandleClient()
}
func wrapLogger(handler http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
log.Printf("%s %s", r.Method, r.URL.Path)
handler.ServeHTTP(w, r)
})
}
func wrapBasicAuth(handler http.Handler, credential string) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
token := strings.SplitN(r.Header.Get("Authorization"), " ", 2)
if len(token) != 2 || strings.ToLower(token[0]) != "basic" {
w.Header().Set("WWW-Authenticate", `Basic realm="GoTTY"`)
http.Error(w, "Bad Request", http.StatusUnauthorized)
return
}
payload, err := base64.StdEncoding.DecodeString(token[1])
if err != nil {
http.Error(w, "Internal Server Error", http.StatusInternalServerError)
return
}
if credential != string(payload) {
w.Header().Set("WWW-Authenticate", `Basic realm="GoTTY"`)
http.Error(w, "authorization failed", http.StatusUnauthorized)
return
}
log.Printf("Basic Authentication Succeeded: %s", r.RemoteAddr)
handler.ServeHTTP(w, r)
})
}
func generateRandomString(length int) string {
const base = 36
size := big.NewInt(base)