penpot/backend/src/app/tokens.clj
2022-09-28 09:45:43 +02:00

57 lines
1.6 KiB
Clojure

;; This Source Code Form is subject to the terms of the Mozilla Public
;; License, v. 2.0. If a copy of the MPL was not distributed with this
;; file, You can obtain one at http://mozilla.org/MPL/2.0/.
;;
;; Copyright (c) KALEIDOS INC
(ns app.tokens
"Tokens generation API."
(:require
[app.common.data :as d]
[app.common.exceptions :as ex]
[app.common.spec :as us]
[app.common.transit :as t]
[app.util.time :as dt]
[buddy.sign.jwe :as jwe]
[clojure.spec.alpha :as s]))
(s/def ::tokens-key bytes?)
(defn generate
[{:keys [tokens-key]} claims]
(us/assert! ::tokens-key tokens-key)
(let [payload (-> claims
(assoc :iat (dt/now))
(d/without-nils)
(t/encode))]
(jwe/encrypt payload tokens-key {:alg :a256kw :enc :a256gcm})))
(defn decode
[{:keys [tokens-key]} token]
(let [payload (jwe/decrypt token tokens-key {:alg :a256kw :enc :a256gcm})]
(t/decode payload)))
(defn verify
[sprops {:keys [token] :as params}]
(let [claims (decode sprops token)]
(when (and (dt/instant? (:exp claims))
(dt/is-before? (:exp claims) (dt/now)))
(ex/raise :type :validation
:code :invalid-token
:reason :token-expired
:params params
:claims claims))
(when (and (contains? params :iss)
(not= (:iss claims)
(:iss params)))
(ex/raise :type :validation
:code :invalid-token
:reason :invalid-issuer
:claims claims
:params params))
claims))