// WithAuthentication creates an http handler that tries to authenticate the given request as a user, and then
// stores any such user found onto the provided context for the request. If authentication fails or returns an error
// the failed handler is used. On success, "Authorization" header is removed from the request and handler
// is invoked to serve the request.
func WithAuthentication(handler http.Handler, mapper genericapirequest.RequestContextMapper, auth authenticator.Request, failed http.Handler) http.Handler {
if auth == nil {
glog.Warningf("Authentication is disabled")
return handler
}
return genericapirequest.WithRequestContext(
http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
user, ok, err := auth.AuthenticateRequest(req)
if err != nil || !ok {
if err != nil {
glog.Errorf("Unable to authenticate the request due to an error: %v", err)
}
failed.ServeHTTP(w, req)
return
}
// authorization header is not required anymore in case of a successful authentication.
req.Header.Del("Authorization")
if ctx, ok := mapper.Get(req); ok {
mapper.Update(req, genericapirequest.WithUser(ctx, user))
}
authenticatedUserCounter.WithLabelValues(compressUsername(user.GetName())).Inc()
handler.ServeHTTP(w, req)
}),
mapper,
)
}
func TestAnonymous(t *testing.T) {
var a authenticator.Request = NewAuthenticator()
u, ok, err := a.AuthenticateRequest(nil)
if err != nil {
t.Fatalf("Unexpected error %v", err)
}
if !ok {
t.Fatalf("Unexpectedly unauthenticated")
}
if u.GetName() != user.Anonymous {
t.Fatalf("Expected username %s, got %s", user.Anonymous, u.GetName())
}
if !sets.NewString(u.GetGroups()...).Equal(sets.NewString(user.AllUnauthenticated)) {
t.Fatalf("Expected group %s, got %v", user.AllUnauthenticated, u.GetGroups())
}
}