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78 lines
2.5 KiB
Python
78 lines
2.5 KiB
Python
# This file is part of Radicale Server - Calendar Server
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# Copyright © 2011 Corentin Le Bail
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# Copyright © 2011-2016 Guillaume Ayoub
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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 ``python-ldap`` module
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(http://www.python-ldap.org/).
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"""
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import ldap
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from .. import config, log
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BASE = config.get("auth", "ldap_base")
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ATTRIBUTE = config.get("auth", "ldap_attribute")
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FILTER = config.get("auth", "ldap_filter")
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CONNEXION = ldap.initialize(config.get("auth", "ldap_url"))
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BINDDN = config.get("auth", "ldap_binddn")
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PASSWORD = config.get("auth", "ldap_password")
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SCOPE = getattr(ldap, "SCOPE_%s" % config.get("auth", "ldap_scope").upper())
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def is_authenticated(user, password):
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"""Check if ``user``/``password`` couple is valid."""
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global CONNEXION
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try:
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CONNEXION.whoami_s()
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except:
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log.LOGGER.debug("Reconnecting the LDAP server")
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CONNEXION = ldap.initialize(config.get("auth", "ldap_url"))
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if BINDDN and PASSWORD:
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log.LOGGER.debug("Initial LDAP bind as %s" % BINDDN)
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CONNEXION.simple_bind_s(BINDDN, PASSWORD)
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distinguished_name = "%s=%s" % (ATTRIBUTE, ldap.dn.escape_dn_chars(user))
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log.LOGGER.debug(
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"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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log.LOGGER.debug("Used LDAP filter: %s" % filter_string)
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users = CONNEXION.search_s(BASE, SCOPE, filter_string)
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if users:
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log.LOGGER.debug("User %s found" % user)
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try:
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CONNEXION.simple_bind_s(users[0][0], password or "")
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except ldap.LDAPError:
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log.LOGGER.debug("Invalid credentials")
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else:
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log.LOGGER.debug("LDAP bind OK")
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return True
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else:
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log.LOGGER.debug("User %s not found" % user)
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log.LOGGER.debug("LDAP bind failed")
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return False
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