# Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.Auth.LDAPAuthenticator do
require Logger
+ import Pleroma.Web.Auth.Authenticator,
+ only: [fetch_credentials: 1, fetch_user: 1]
+
@behaviour Pleroma.Web.Auth.Authenticator
+ @base Pleroma.Web.Auth.PleromaAuthenticator
@connection_timeout 10_000
@search_timeout 10_000
- def get_user(%Plug.Conn{} = conn) do
- if Pleroma.Config.get([:ldap, :enabled]) do
- {name, password} =
- case conn.params do
- %{"authorization" => %{"name" => name, "password" => password}} ->
- {name, password}
-
- %{"grant_type" => "password", "username" => name, "password" => password} ->
- {name, password}
- end
-
- case ldap_user(name, password) do
- %User{} = user ->
- {:ok, user}
+ defdelegate get_registration(conn), to: @base
+ defdelegate create_from_registration(conn, registration), to: @base
+ defdelegate handle_error(conn, error), to: @base
+ defdelegate auth_template, to: @base
+ defdelegate oauth_consumer_template, to: @base
- {:error, {:ldap_connection_error, _}} ->
- # When LDAP is unavailable, try default authenticator
- Pleroma.Web.Auth.PleromaAuthenticator.get_user(conn)
-
- error ->
- error
- end
+ def get_user(%Plug.Conn{} = conn) do
+ with {:ldap, true} <- {:ldap, Pleroma.Config.get([:ldap, :enabled])},
+ {:ok, {name, password}} <- fetch_credentials(conn),
+ %User{} = user <- ldap_user(name, password) do
+ {:ok, user}
else
- # Fall back to default authenticator
- Pleroma.Web.Auth.PleromaAuthenticator.get_user(conn)
- end
- end
+ {:ldap, _} ->
+ @base.get_user(conn)
- def handle_error(%Plug.Conn{} = _conn, error) do
- error
+ error ->
+ error
+ end
end
- def auth_template, do: nil
-
defp ldap_user(name, password) do
ldap = Pleroma.Config.get(:ldap, [])
host = Keyword.get(ldap, :host, "localhost")
case :eldap.open([to_charlist(host)], options) do
{:ok, connection} ->
try do
- uid = Keyword.get(ldap, :uid, "cn")
- base = Keyword.get(ldap, :base)
-
- case :eldap.simple_bind(connection, "#{uid}=#{name},#{base}", password) do
- :ok ->
- case User.get_by_nickname_or_email(name) do
- %User{} = user ->
- user
-
- _ ->
- register_user(connection, base, uid, name, password)
- end
-
- error ->
- error
+ if Keyword.get(ldap, :tls, false) do
+ :application.ensure_all_started(:ssl)
+
+ case :eldap.start_tls(
+ connection,
+ Keyword.get(ldap, :tlsopts, []),
+ @connection_timeout
+ ) do
+ :ok ->
+ :ok
+
+ error ->
+ Logger.error("Could not start TLS: #{inspect(error)}")
+ end
end
+
+ bind_user(connection, ldap, name, password)
after
:eldap.close(connection)
end
end
end
- defp register_user(connection, base, uid, name, password) do
+ defp bind_user(connection, ldap, name, password) do
+ uid = Keyword.get(ldap, :uid, "cn")
+ base = Keyword.get(ldap, :base)
+
+ case :eldap.simple_bind(connection, "#{uid}=#{name},#{base}", password) do
+ :ok ->
+ case fetch_user(name) do
+ %User{} = user ->
+ user
+
+ _ ->
+ register_user(connection, base, uid, name)
+ end
+
+ error ->
+ error
+ end
+ end
+
+ defp register_user(connection, base, uid, name) do
case :eldap.search(connection, [
{:base, to_charlist(base)},
{:filter, :eldap.equalityMatch(to_charlist(uid), to_charlist(name))},
{:timeout, @search_timeout}
]) do
{:ok, {:eldap_search_result, [{:eldap_entry, _, attributes}], _}} ->
- with {_, [mail]} <- List.keyfind(attributes, 'mail', 0) do
- params = %{
- email: :erlang.list_to_binary(mail),
- name: name,
- nickname: name,
- password: password,
- password_confirmation: password
- }
-
- changeset = User.register_changeset(%User{}, params)
-
- case User.register(changeset) do
- {:ok, user} -> user
- error -> error
+ params = %{
+ name: name,
+ nickname: name,
+ password: nil
+ }
+
+ params =
+ case List.keyfind(attributes, 'mail', 0) do
+ {_, [mail]} -> Map.put_new(params, :email, :erlang.list_to_binary(mail))
+ _ -> params
end
- else
- _ -> {:error, :ldap_registration_missing_attributes}
+
+ changeset = User.register_changeset_ldap(%User{}, params)
+
+ case User.register(changeset) do
+ {:ok, user} -> user
+ error -> error
end
error ->