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authentik/internal/web/static.go

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package web
import (
"fmt"
"net/http"
"github.com/go-http-utils/etag"
"github.com/gorilla/mux"
"goauthentik.io/internal/config"
"goauthentik.io/internal/constants"
"goauthentik.io/internal/utils/web"
staticWeb "goauthentik.io/web"
)
func (ws *WebServer) configureStatic() {
statRouter := ws.lh.NewRoute().Subrouter()
statRouter.Use(ws.staticHeaderMiddleware)
indexLessRouter := statRouter.NewRoute().Subrouter()
indexLessRouter.Use(web.DisableIndex)
// Media files, always local
fs := http.FileServer(http.Dir(config.Get().Paths.Media))
distFs := http.FileServer(http.Dir("./web/dist"))
distHandler := http.StripPrefix("/static/dist/", distFs)
authentikHandler := http.StripPrefix("/static/authentik/", http.FileServer(http.Dir("./web/authentik")))
helpHandler := http.FileServer(http.Dir("./website/help/"))
indexLessRouter.PathPrefix("/static/dist/").Handler(distHandler)
indexLessRouter.PathPrefix("/static/authentik/").Handler(authentikHandler)
// Prevent font-loading issues on safari, which loads fonts relatively to the URL the browser is on
indexLessRouter.PathPrefix("/if/flow/{flow_slug}/assets").HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
web.DisableIndex(http.StripPrefix(fmt.Sprintf("/if/flow/%s", vars["flow_slug"]), distFs)).ServeHTTP(rw, r)
})
indexLessRouter.PathPrefix("/if/admin/assets").Handler(http.StripPrefix("/if/admin", distFs))
indexLessRouter.PathPrefix("/if/user/assets").Handler(http.StripPrefix("/if/user", distFs))
indexLessRouter.PathPrefix("/media/").Handler(http.StripPrefix("/media", fs))
statRouter.PathPrefix("/if/help/").Handler(http.StripPrefix("/if/help/", helpHandler))
statRouter.PathPrefix("/help").Handler(http.RedirectHandler("/if/help/", http.StatusMovedPermanently))
ws.lh.Path("/robots.txt").HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
rw.Header()["Content-Type"] = []string{"text/plain"}
rw.WriteHeader(200)
_, err := rw.Write(staticWeb.RobotsTxt)
if err != nil {
ws.log.WithError(err).Warning("failed to write response")
}
})
ws.lh.Path("/.well-known/security.txt").HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
rw.Header()["Content-Type"] = []string{"text/plain"}
rw.WriteHeader(200)
_, err := rw.Write(staticWeb.SecurityTxt)
if err != nil {
ws.log.WithError(err).Warning("failed to write response")
}
})
}
func (ws *WebServer) staticHeaderMiddleware(h http.Handler) http.Handler {
etagHandler := etag.Handler(h, false)
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Cache-Control", "public, no-transform")
w.Header().Set("X-authentik-version", constants.VERSION)
w.Header().Set("Vary", "X-authentik-version, Etag")
etagHandler.ServeHTTP(w, r)
})
}