2021-01-07 11:29:57 +01:00

130 lines
4.9 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/.
;;
;; This Source Code Form is "Incompatible With Secondary Licenses", as
;; defined by the Mozilla Public License, v. 2.0.
;;
;; Copyright (c) 2020 UXBOX Labs SL
(ns app.http.auth.ldap
(:require
[app.common.exceptions :as ex]
[app.config :as cfg]
[app.http.session :as session]
[clj-ldap.client :as client]
[clojure.set :as set]
[clojure.spec.alpha :as s]
[clojure.string ]
[clojure.tools.logging :as log]
[integrant.core :as ig]))
(declare authenticate)
(declare create-connection)
(declare replace-several)
(s/def ::host ::cfg/ldap-auth-host)
(s/def ::port ::cfg/ldap-auth-port)
(s/def ::ssl ::cfg/ldap-auth-ssl)
(s/def ::starttls ::cfg/ldap-auth-starttls)
(s/def ::user-query ::cfg/ldap-auth-user-query)
(s/def ::base-dn ::cfg/ldap-auth-base-dn)
(s/def ::username-attribute ::cfg/ldap-auth-username-attribute)
(s/def ::email-attribute ::cfg/ldap-auth-email-attribute)
(s/def ::fullname-attribute ::cfg/ldap-auth-fullname-attribute)
(s/def ::avatar-attribute ::cfg/ldap-auth-avatar-attribute)
(s/def ::rpc map?)
(s/def ::session map?)
(defmethod ig/pre-init-spec :app.http.auth/ldap
[_]
(s/keys
:req-un [::rpc ::session]
:opt-un [::host
::port
::ssl
::starttls
::username-attribute
::base-dn
::username-attribute
::email-attribute
::fullname-attribute
::avatar-attribute]))
(defmethod ig/init-key :app.http.auth/ldap
[_ {:keys [session rpc] :as cfg}]
(let [conn (create-connection cfg)]
(with-meta
(fn [request]
(let [data (:body-params request)]
(when-some [info (authenticate (assoc cfg
:conn conn
:username (:email data)
:password (:password data)))]
(let [method-fn (get-in rpc [:methods :mutation :login-or-register])
profile (method-fn {:email (:email info)
:fullname (:fullname info)})
uagent (get-in request [:headers "user-agent"])
sid (session/create! session {:profile-id (:id profile)
:user-agent uagent})]
{:status 200
:cookies (session/cookies session {:value sid})
:body profile}))))
{::conn conn})))
(defmethod ig/halt-key! ::client
[_ handler]
(let [{:keys [::conn]} (meta handler)]
(when (realized? conn)
(.close @conn))))
(defn- replace-several [s & {:as replacements}]
(reduce-kv clojure.string/replace s replacements))
(defn- create-connection
[cfg]
(let [params (merge {:host {:address (:host cfg)
:port (:port cfg)}}
(-> cfg
(select-keys [:ssl
:starttls
:ldap-bind-dn
:ldap-bind-password])
(set/rename-keys {:ssl :ssl?
:starttls :startTLS?
:ldap-bind-dn :bind-dn
:ldap-bind-password :password})))]
(delay
(try
(client/connect params)
(catch Exception e
(log/errorf e "Cannot connect to LDAP %s:%s"
(:host cfg) (:port cfg)))))))
(defn- authenticate
[{:keys [conn username password] :as cfg}]
(when-some [conn (some-> conn deref)]
(let [user-search-query (replace-several (:user-query cfg) "$username" username)
user-attributes (-> cfg
(select-keys [:username-attribute
:email-attribute
:fullname-attribute
:avatar-attribute])
vals)]
(when-some [user-entry (-> conn
(client/search (:base-dn cfg)
{:filter user-search-query
:sizelimit 1
:attributes user-attributes})
(first))]
(when-not (client/bind? conn (:dn user-entry) password)
(ex/raise :type :authentication
:code :wrong-credentials))
(set/rename-keys user-entry {(keyword (:avatar-attribute cfg)) :photo
(keyword (:fullname-attribute cfg)) :fullname
(keyword (:email-attribute cfg)) :email})))))