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133 lines
4.5 KiB
133 lines
4.5 KiB
# -*- coding: utf-8 -*-
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#
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# This file is part of Radicale Server - Calendar Server
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# Copyright © 2011 Corentin Le Bail
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# Copyright © 2011-2013 Guillaume Ayoub
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# Copyright © 2015 Raoul Thill
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# Copyright © 2017 Marco Huenseler
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#
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# This library is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Radicale. If not, see <http://www.gnu.org/licenses/>.
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"""
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LDAP authentication.
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Authentication based on the ``ldap3`` module
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(https://github.com/cannatag/ldap3/).
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"""
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import ldap3
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import ldap3.core.exceptions
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from radicale.auth import BaseAuth
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from radicale.log import logger
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import radicale3_auth_ldap.ldap3imports
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PLUGIN_CONFIG_SCHEMA = {"auth": {
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"ldap_url": {
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"value": "ldap://localhost:389",
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"type": str},
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"ldap_base": {
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"value": "ou=Users",
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"type": str},
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"ldap_attribute": {
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"value": "uid",
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"type": str},
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"ldap_filter": {
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"value": "(objectClass=*)",
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"type": str},
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"ldap_binddn": {
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"value": None,
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"type": str},
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"ldap_password": {
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"value": None,
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"type": str},
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"ldap_scope": {
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"value": "SUBTREE",
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"type": str},
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"ldap_support_extended": {
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"value": True,
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"type": bool}}}
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class Auth(BaseAuth):
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def __init__(self, configuration):
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super().__init__(configuration.copy(PLUGIN_CONFIG_SCHEMA))
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def login(self, user, password):
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"""Check if ``user``/``password`` couple is valid."""
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SERVER = ldap3.Server(self.configuration.get("auth", "ldap_url"))
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BASE = self.configuration.get("auth", "ldap_base")
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ATTRIBUTE = self.configuration.get("auth", "ldap_attribute")
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FILTER = self.configuration.get("auth", "ldap_filter")
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BINDDN = self.configuration.get("auth", "ldap_binddn")
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PASSWORD = self.configuration.get("auth", "ldap_password")
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SCOPE = self.configuration.get("auth", "ldap_scope")
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SUPPORT_EXTENDED = self.configuration.get("auth", "ldap_support_extended")
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if BINDDN and PASSWORD:
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conn = ldap3.Connection(SERVER, BINDDN, PASSWORD)
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else:
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conn = ldap3.Connection(SERVER)
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conn.bind()
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try:
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logger.debug("LDAP whoami: %s" % conn.extend.standard.who_am_i())
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except Exception as err:
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logger.debug("LDAP error: %s" % err)
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distinguished_name = "%s=%s" % (ATTRIBUTE, ldap3imports.escape_attribute_value(user))
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logger.debug("LDAP bind for %s in base %s" % (distinguished_name, BASE))
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if FILTER:
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filter_string = "(&(%s)%s)" % (distinguished_name, FILTER)
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else:
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filter_string = distinguished_name
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logger.debug("LDAP filter: %s" % filter_string)
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conn.search(search_base=BASE,
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search_scope=SCOPE,
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search_filter=filter_string,
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attributes=[ATTRIBUTE])
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users = conn.response
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if users:
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user_dn = users[0]['dn']
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uid = users[0]['attributes'][ATTRIBUTE]
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logger.debug("LDAP user %s (%s) found" % (uid, user_dn))
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try:
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conn = ldap3.Connection(SERVER, user_dn, password)
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conn.bind()
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logger.debug(conn.result)
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if SUPPORT_EXTENDED:
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whoami = conn.extend.standard.who_am_i()
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logger.debug("LDAP whoami: %s" % whoami)
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else:
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logger.debug("LDAP skip extended: call whoami")
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whoami = conn.result['result'] == 0
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if whoami:
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logger.debug("LDAP bind OK")
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return uid[0]
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else:
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logger.debug("LDAP bind failed")
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return ""
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except ldap3.core.exceptions.LDAPInvalidCredentialsResult:
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logger.debug("LDAP invalid credentials")
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except Exception as err:
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logger.debug("LDAP error %s" % err)
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return ""
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else:
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logger.debug("LDAP user %s not found" % user)
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return ""
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