1 # Pleroma: A lightweight social networking server
2 # Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
3 # SPDX-License-Identifier: AGPL-3.0-only
5 defmodule Pleroma.Web.Auth.LDAPAuthenticator do
10 @behaviour Pleroma.Web.Auth.Authenticator
11 @base Pleroma.Web.Auth.PleromaAuthenticator
13 @connection_timeout 10_000
14 @search_timeout 10_000
16 defdelegate get_registration(conn), to: @base
17 defdelegate create_from_registration(conn, registration), to: @base
18 defdelegate handle_error(conn, error), to: @base
19 defdelegate auth_template, to: @base
20 defdelegate oauth_consumer_template, to: @base
22 def get_user(%Plug.Conn{} = conn) do
23 if Pleroma.Config.get([:ldap, :enabled]) do
26 %{"authorization" => %{"name" => name, "password" => password}} ->
29 %{"grant_type" => "password", "username" => name, "password" => password} ->
33 case ldap_user(name, password) do
37 {:error, {:ldap_connection_error, _}} ->
38 # When LDAP is unavailable, try default authenticator
45 # Fall back to default authenticator
50 defp ldap_user(name, password) do
51 ldap = Pleroma.Config.get(:ldap, [])
52 host = Keyword.get(ldap, :host, "localhost")
53 port = Keyword.get(ldap, :port, 389)
54 ssl = Keyword.get(ldap, :ssl, false)
55 sslopts = Keyword.get(ldap, :sslopts, [])
58 [{:port, port}, {:ssl, ssl}, {:timeout, @connection_timeout}] ++
59 if sslopts != [], do: [{:sslopts, sslopts}], else: []
61 case :eldap.open([to_charlist(host)], options) do
64 if Keyword.get(ldap, :tls, false) do
65 :application.ensure_all_started(:ssl)
67 case :eldap.start_tls(
69 Keyword.get(ldap, :tlsopts, []),
76 Logger.error("Could not start TLS: #{inspect(error)}")
80 bind_user(connection, ldap, name, password)
82 :eldap.close(connection)
86 Logger.error("Could not open LDAP connection: #{inspect(error)}")
87 {:error, {:ldap_connection_error, error}}
91 defp bind_user(connection, ldap, name, password) do
92 uid = Keyword.get(ldap, :uid, "cn")
93 base = Keyword.get(ldap, :base)
95 case :eldap.simple_bind(connection, "#{uid}=#{name},#{base}", password) do
97 case User.get_by_nickname_or_email(name) do
102 register_user(connection, base, uid, name, password)
110 defp register_user(connection, base, uid, name, password) do
111 case :eldap.search(connection, [
112 {:base, to_charlist(base)},
113 {:filter, :eldap.equalityMatch(to_charlist(uid), to_charlist(name))},
114 {:scope, :eldap.wholeSubtree()},
115 {:attributes, ['mail', 'email']},
116 {:timeout, @search_timeout}
118 {:ok, {:eldap_search_result, [{:eldap_entry, _, attributes}], _}} ->
119 with {_, [mail]} <- List.keyfind(attributes, 'mail', 0) do
121 email: :erlang.list_to_binary(mail),
125 password_confirmation: password
128 changeset = User.register_changeset(%User{}, params)
130 case User.register(changeset) do
136 Logger.error("Could not find LDAP attribute mail: #{inspect(attributes)}")
137 {:error, :ldap_registration_missing_attributes}