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#!/usr/bin/env python
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# encoding: utf-8
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# ldap authentication lib
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# Copyright (C) 2009-2010 Marcin Kuzminski <marcin@python-works.com>
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; version 2
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# of the License or (at your opinion) any later version of the license.
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#
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# This program 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 this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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# MA 02110-1301, USA.
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"""
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Created on Nov 17, 2010
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@author: marcink
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"""
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from rhodecode.lib.exceptions import *
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import logging
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log = logging.getLogger(__name__)
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try:
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import ldap
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except ImportError:
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pass
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class AuthLdap(object):
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def __init__(self, server, base_dn, port=389, bind_dn='', bind_pass='',
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use_ldaps=False, ldap_version=3):
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self.ldap_version = ldap_version
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if use_ldaps:
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port = port or 689
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self.LDAP_USE_LDAPS = use_ldaps
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self.LDAP_SERVER_ADDRESS = server
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self.LDAP_SERVER_PORT = port
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#USE FOR READ ONLY BIND TO LDAP SERVER
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self.LDAP_BIND_DN = bind_dn
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self.LDAP_BIND_PASS = bind_pass
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ldap_server_type = 'ldap'
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if self.LDAP_USE_LDAPS:ldap_server_type = ldap_server_type + 's'
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self.LDAP_SERVER = "%s://%s:%s" % (ldap_server_type,
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self.LDAP_SERVER_ADDRESS,
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self.LDAP_SERVER_PORT)
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self.BASE_DN = base_dn
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self.AUTH_DN = "uid=%s,%s"
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def authenticate_ldap(self, username, password):
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"""Authenticate a user via LDAP and return his/her LDAP properties.
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Raises AuthenticationError if the credentials are rejected, or
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EnvironmentError if the LDAP server can't be reached.
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:param username: username
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:param password: password
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"""
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from rhodecode.lib.helpers import chop_at
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uid = chop_at(username, "@%s" % self.LDAP_SERVER_ADDRESS)
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dn = self.AUTH_DN % (uid, self.BASE_DN)
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log.debug("Authenticating %r at %s", dn, self.LDAP_SERVER)
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if "," in username:
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raise LdapUsernameError("invalid character in username: ,")
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try:
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ldap.set_option(ldap.OPT_X_TLS_CACERTFILE, '/etc/openldap/cacerts')
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ldap.set_option(ldap.OPT_NETWORK_TIMEOUT, 10)
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server = ldap.initialize(self.LDAP_SERVER)
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if self.ldap_version == 2:
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server.protocol = ldap.VERSION2
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else:
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server.protocol = ldap.VERSION3
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if self.LDAP_BIND_DN and self.LDAP_BIND_PASS:
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server.simple_bind_s(self.AUTH_DN % (self.LDAP_BIND_DN,
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self.BASE_DN),
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self.LDAP_BIND_PASS)
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server.simple_bind_s(dn, password)
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properties = server.search_s(dn, ldap.SCOPE_SUBTREE)
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if not properties:
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raise ldap.NO_SUCH_OBJECT()
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except ldap.NO_SUCH_OBJECT, e:
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log.debug("LDAP says no such user '%s' (%s)", uid, username)
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raise LdapUsernameError()
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except ldap.INVALID_CREDENTIALS, e:
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log.debug("LDAP rejected password for user '%s' (%s)", uid, username)
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raise LdapPasswordError()
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except ldap.SERVER_DOWN, e:
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raise LdapConnectionError("LDAP can't access authentication server")
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return properties[0]
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