func Handle404(w http.ResponseWriter, r *http.Request) {
err := model.NewLocAppError("Handle404", "api.context.404.app_error", nil, "")
err.Translate(utils.T)
err.StatusCode = http.StatusNotFound
l4g.Debug("%v: code=404 ip=%v", r.URL.Path, utils.GetIpAddress(r))
if IsApiCall(r) {
w.WriteHeader(err.StatusCode)
err.DetailedError = "There doesn't appear to be an api call for the url='" + r.URL.Path + "'. Typo? are you missing a team_id or user_id as part of the url?"
w.Write([]byte(err.ToJson()))
} else {
RenderWebError(err, w, r)
}
}
func (h handler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
now := time.Now()
l4g.Debug("%v", r.URL.Path)
c := &Context{}
c.T, c.Locale = utils.GetTranslationsAndLocale(w, r)
c.RequestId = model.NewId()
c.IpAddress = utils.GetIpAddress(r)
c.TeamId = mux.Vars(r)["team_id"]
token := ""
isTokenFromQueryString := false
// Attempt to parse token out of the header
authHeader := r.Header.Get(model.HEADER_AUTH)
if len(authHeader) > 6 && strings.ToUpper(authHeader[0:6]) == model.HEADER_BEARER {
// Default session token
token = authHeader[7:]
} else if len(authHeader) > 5 && strings.ToLower(authHeader[0:5]) == model.HEADER_TOKEN {
// OAuth token
token = authHeader[6:]
}
// Attempt to parse the token from the cookie
if len(token) == 0 {
if cookie, err := r.Cookie(model.SESSION_COOKIE_TOKEN); err == nil {
token = cookie.Value
if (h.requireSystemAdmin || h.requireUser) && !h.trustRequester {
if r.Header.Get(model.HEADER_REQUESTED_WITH) != model.HEADER_REQUESTED_WITH_XML {
c.Err = model.NewLocAppError("ServeHTTP", "api.context.session_expired.app_error", nil, "token="+token+" Appears to be a CSRF attempt")
token = ""
}
}
}
}
// Attempt to parse token out of the query string
if len(token) == 0 {
token = r.URL.Query().Get("access_token")
isTokenFromQueryString = true
}
if utils.GetSiteURL() == "" {
protocol := GetProtocol(r)
c.SetSiteURL(protocol + "://" + r.Host)
}
w.Header().Set(model.HEADER_REQUEST_ID, c.RequestId)
w.Header().Set(model.HEADER_VERSION_ID, fmt.Sprintf("%v.%v.%v", model.CurrentVersion, model.BuildNumber, utils.CfgHash))
if einterfaces.GetClusterInterface() != nil {
w.Header().Set(model.HEADER_CLUSTER_ID, einterfaces.GetClusterInterface().GetClusterId())
}
// Instruct the browser not to display us in an iframe unless is the same origin for anti-clickjacking
if !h.isApi {
w.Header().Set("X-Frame-Options", "SAMEORIGIN")
w.Header().Set("Content-Security-Policy", "frame-ancestors 'self'")
} else {
// All api response bodies will be JSON formatted by default
w.Header().Set("Content-Type", "application/json")
if r.Method == "GET" {
w.Header().Set("Expires", "0")
}
}
if len(token) != 0 {
session, err := app.GetSession(token)
if err != nil {
l4g.Error(utils.T("api.context.invalid_session.error"), err.Error())
c.RemoveSessionCookie(w, r)
if h.requireUser || h.requireSystemAdmin {
c.Err = model.NewLocAppError("ServeHTTP", "api.context.session_expired.app_error", nil, "token="+token)
c.Err.StatusCode = http.StatusUnauthorized
}
} else if !session.IsOAuth && isTokenFromQueryString {
c.Err = model.NewLocAppError("ServeHTTP", "api.context.token_provided.app_error", nil, "token="+token)
c.Err.StatusCode = http.StatusUnauthorized
} else {
c.Session = *session
}
}
if h.isApi || h.isTeamIndependent {
c.setTeamURL(c.GetSiteURL(), false)
c.Path = r.URL.Path
} else {
splitURL := strings.Split(r.URL.Path, "/")
c.setTeamURL(c.GetSiteURL()+"/"+splitURL[1], true)
c.Path = "/" + strings.Join(splitURL[2:], "/")
}
if c.Err == nil && h.requireUser {
c.UserRequired()
}
if c.Err == nil && h.requireMfa {
c.MfaRequired()
}
if c.Err == nil && h.requireSystemAdmin {
c.SystemAdminRequired()
}
if c.Err == nil && h.isUserActivity && token != "" && len(c.Session.UserId) > 0 {
app.SetStatusOnline(c.Session.UserId, c.Session.Id, false)
}
if c.Err == nil && (h.requireUser || h.requireSystemAdmin) {
//check if teamId exist
c.CheckTeamId()
}
if c.Err == nil {
h.handleFunc(c, w, r)
}
// Handle errors that have occoured
if c.Err != nil {
c.Err.Translate(c.T)
c.Err.RequestId = c.RequestId
c.LogError(c.Err)
c.Err.Where = r.URL.Path
// Block out detailed error when not in developer mode
if !*utils.Cfg.ServiceSettings.EnableDeveloper {
c.Err.DetailedError = ""
}
if h.isApi {
w.WriteHeader(c.Err.StatusCode)
w.Write([]byte(c.Err.ToJson()))
if einterfaces.GetMetricsInterface() != nil {
einterfaces.GetMetricsInterface().IncrementHttpError()
}
} else {
if c.Err.StatusCode == http.StatusUnauthorized {
http.Redirect(w, r, c.GetTeamURL()+"/?redirect="+url.QueryEscape(r.URL.Path), http.StatusTemporaryRedirect)
} else {
RenderWebError(c.Err, w, r)
}
}
}
if h.isApi && einterfaces.GetMetricsInterface() != nil {
einterfaces.GetMetricsInterface().IncrementHttpRequest()
if r.URL.Path != model.API_URL_SUFFIX+"/users/websocket" {
elapsed := float64(time.Since(now)) / float64(time.Second)
einterfaces.GetMetricsInterface().ObserveHttpRequestDuration(elapsed)
}
}
}
func (m *VaryBy) Key(r *http.Request) string {
return utils.GetIpAddress(r)
}
func StartServer() {
l4g.Info(utils.T("api.server.start_server.starting.info"))
var handler http.Handler = &CorsWrapper{Srv.Router}
if *utils.Cfg.RateLimitSettings.Enable {
l4g.Info(utils.T("api.server.start_server.rate.info"))
store, err := memstore.New(utils.Cfg.RateLimitSettings.MemoryStoreSize)
if err != nil {
l4g.Critical(utils.T("api.server.start_server.rate_limiting_memory_store"))
return
}
quota := throttled.RateQuota{
MaxRate: throttled.PerSec(utils.Cfg.RateLimitSettings.PerSec),
MaxBurst: *utils.Cfg.RateLimitSettings.MaxBurst,
}
rateLimiter, err := throttled.NewGCRARateLimiter(store, quota)
if err != nil {
l4g.Critical(utils.T("api.server.start_server.rate_limiting_rate_limiter"))
return
}
httpRateLimiter := throttled.HTTPRateLimiter{
RateLimiter: rateLimiter,
VaryBy: &VaryBy{},
DeniedHandler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
l4g.Error("%v: Denied due to throttling settings code=429 ip=%v", r.URL.Path, utils.GetIpAddress(r))
throttled.DefaultDeniedHandler.ServeHTTP(w, r)
}),
}
handler = httpRateLimiter.RateLimit(handler)
}
Srv.GracefulServer = &graceful.Server{
Timeout: TIME_TO_WAIT_FOR_CONNECTIONS_TO_CLOSE_ON_SERVER_SHUTDOWN,
Server: &http.Server{
Addr: utils.Cfg.ServiceSettings.ListenAddress,
Handler: handlers.RecoveryHandler(handlers.PrintRecoveryStack(true))(handler),
ReadTimeout: time.Duration(*utils.Cfg.ServiceSettings.ReadTimeout) * time.Second,
WriteTimeout: time.Duration(*utils.Cfg.ServiceSettings.WriteTimeout) * time.Second,
},
}
l4g.Info(utils.T("api.server.start_server.listening.info"), utils.Cfg.ServiceSettings.ListenAddress)
if *utils.Cfg.ServiceSettings.Forward80To443 {
go func() {
listener, err := net.Listen("tcp", ":80")
if err != nil {
l4g.Error("Unable to setup forwarding")
return
}
defer listener.Close()
http.Serve(listener, http.HandlerFunc(redirectHTTPToHTTPS))
}()
}
go func() {
var err error
if *utils.Cfg.ServiceSettings.ConnectionSecurity == model.CONN_SECURITY_TLS {
if *utils.Cfg.ServiceSettings.UseLetsEncrypt {
var m letsencrypt.Manager
m.CacheFile(*utils.Cfg.ServiceSettings.LetsEncryptCertificateCacheFile)
tlsConfig := &tls.Config{
GetCertificate: m.GetCertificate,
}
tlsConfig.NextProtos = append(tlsConfig.NextProtos, "h2")
err = Srv.GracefulServer.ListenAndServeTLSConfig(tlsConfig)
} else {
err = Srv.GracefulServer.ListenAndServeTLS(*utils.Cfg.ServiceSettings.TLSCertFile, *utils.Cfg.ServiceSettings.TLSKeyFile)
}
} else {
err = Srv.GracefulServer.ListenAndServe()
}
if err != nil {
l4g.Critical(utils.T("api.server.start_server.starting.critical"), err)
time.Sleep(time.Second)
}
}()
}