|
|
# -*- coding: utf-8 -*-
|
|
|
# This program is free software: you can redistribute it and/or modify
|
|
|
# it under the terms of the GNU General Public License as published by
|
|
|
# the Free Software Foundation, either version 3 of the License, or
|
|
|
# (at your option) any later version.
|
|
|
#
|
|
|
# This program is distributed in the hope that it will be useful,
|
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
# GNU General Public License for more details.
|
|
|
#
|
|
|
# You should have received a copy of the GNU General Public License
|
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
"""
|
|
|
rhodecode.lib.auth_modules.auth_ldap
|
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
|
|
RhodeCode authentication plugin for LDAP
|
|
|
|
|
|
:created_on: Created on Nov 17, 2010
|
|
|
:author: marcink
|
|
|
:copyright: (c) 2013 RhodeCode GmbH.
|
|
|
:license: GPLv3, see LICENSE for more details.
|
|
|
"""
|
|
|
|
|
|
|
|
|
import logging
|
|
|
import traceback
|
|
|
|
|
|
from rhodecode.lib import auth_modules
|
|
|
from rhodecode.lib.compat import hybrid_property
|
|
|
from rhodecode.lib.utils2 import safe_unicode, safe_str
|
|
|
from rhodecode.lib.exceptions import (
|
|
|
LdapConnectionError, LdapUsernameError, LdapPasswordError, LdapImportError
|
|
|
)
|
|
|
from rhodecode.model.db import User
|
|
|
|
|
|
log = logging.getLogger(__name__)
|
|
|
|
|
|
try:
|
|
|
import ldap
|
|
|
except ImportError:
|
|
|
# means that python-ldap is not installed
|
|
|
ldap = None
|
|
|
|
|
|
|
|
|
class AuthLdap(object):
|
|
|
|
|
|
def __init__(self, server, base_dn, port=389, bind_dn='', bind_pass='',
|
|
|
tls_kind='PLAIN', tls_reqcert='DEMAND', ldap_version=3,
|
|
|
ldap_filter='(&(objectClass=user)(!(objectClass=computer)))',
|
|
|
search_scope='SUBTREE', attr_login='uid'):
|
|
|
if ldap is None:
|
|
|
raise LdapImportError
|
|
|
|
|
|
self.ldap_version = ldap_version
|
|
|
ldap_server_type = 'ldap'
|
|
|
|
|
|
self.TLS_KIND = tls_kind
|
|
|
|
|
|
if self.TLS_KIND == 'LDAPS':
|
|
|
port = port or 689
|
|
|
ldap_server_type = ldap_server_type + 's'
|
|
|
|
|
|
OPT_X_TLS_DEMAND = 2
|
|
|
self.TLS_REQCERT = getattr(ldap, 'OPT_X_TLS_%s' % tls_reqcert,
|
|
|
OPT_X_TLS_DEMAND)
|
|
|
# split server into list
|
|
|
self.LDAP_SERVER_ADDRESS = server.split(',')
|
|
|
self.LDAP_SERVER_PORT = port
|
|
|
|
|
|
# USE FOR READ ONLY BIND TO LDAP SERVER
|
|
|
self.LDAP_BIND_DN = safe_str(bind_dn)
|
|
|
self.LDAP_BIND_PASS = safe_str(bind_pass)
|
|
|
_LDAP_SERVERS = []
|
|
|
for host in self.LDAP_SERVER_ADDRESS:
|
|
|
_LDAP_SERVERS.append("%s://%s:%s" % (ldap_server_type,
|
|
|
host.replace(' ', ''),
|
|
|
self.LDAP_SERVER_PORT))
|
|
|
self.LDAP_SERVER = str(', '.join(s for s in _LDAP_SERVERS))
|
|
|
self.BASE_DN = safe_str(base_dn)
|
|
|
self.LDAP_FILTER = safe_str(ldap_filter)
|
|
|
self.SEARCH_SCOPE = getattr(ldap, 'SCOPE_%s' % search_scope)
|
|
|
self.attr_login = attr_login
|
|
|
|
|
|
def authenticate_ldap(self, username, password):
|
|
|
"""
|
|
|
Authenticate a user via LDAP and return his/her LDAP properties.
|
|
|
|
|
|
Raises AuthenticationError if the credentials are rejected, or
|
|
|
EnvironmentError if the LDAP server can't be reached.
|
|
|
|
|
|
:param username: username
|
|
|
:param password: password
|
|
|
"""
|
|
|
|
|
|
from rhodecode.lib.helpers import chop_at
|
|
|
|
|
|
uid = chop_at(username, "@%s" % self.LDAP_SERVER_ADDRESS)
|
|
|
|
|
|
if not password:
|
|
|
log.debug("Attempt to authenticate LDAP user "
|
|
|
"with blank password rejected.")
|
|
|
raise LdapPasswordError()
|
|
|
if "," in username:
|
|
|
raise LdapUsernameError("invalid character in username: ,")
|
|
|
try:
|
|
|
if hasattr(ldap, 'OPT_X_TLS_CACERTDIR'):
|
|
|
ldap.set_option(ldap.OPT_X_TLS_CACERTDIR,
|
|
|
'/etc/openldap/cacerts')
|
|
|
ldap.set_option(ldap.OPT_REFERRALS, ldap.OPT_OFF)
|
|
|
ldap.set_option(ldap.OPT_RESTART, ldap.OPT_ON)
|
|
|
ldap.set_option(ldap.OPT_TIMEOUT, 20)
|
|
|
ldap.set_option(ldap.OPT_NETWORK_TIMEOUT, 10)
|
|
|
ldap.set_option(ldap.OPT_TIMELIMIT, 15)
|
|
|
if self.TLS_KIND != 'PLAIN':
|
|
|
ldap.set_option(ldap.OPT_X_TLS_REQUIRE_CERT, self.TLS_REQCERT)
|
|
|
server = ldap.initialize(self.LDAP_SERVER)
|
|
|
if self.ldap_version == 2:
|
|
|
server.protocol = ldap.VERSION2
|
|
|
else:
|
|
|
server.protocol = ldap.VERSION3
|
|
|
|
|
|
if self.TLS_KIND == 'START_TLS':
|
|
|
server.start_tls_s()
|
|
|
|
|
|
if self.LDAP_BIND_DN and self.LDAP_BIND_PASS:
|
|
|
log.debug('Trying simple_bind with password and given DN: %s'
|
|
|
% self.LDAP_BIND_DN)
|
|
|
server.simple_bind_s(self.LDAP_BIND_DN, self.LDAP_BIND_PASS)
|
|
|
|
|
|
filter_ = '(&%s(%s=%s))' % (self.LDAP_FILTER, self.attr_login,
|
|
|
username)
|
|
|
log.debug("Authenticating %r filter %s at %s", self.BASE_DN,
|
|
|
filter_, self.LDAP_SERVER)
|
|
|
lobjects = server.search_ext_s(self.BASE_DN, self.SEARCH_SCOPE,
|
|
|
filter_)
|
|
|
|
|
|
if not lobjects:
|
|
|
raise ldap.NO_SUCH_OBJECT()
|
|
|
|
|
|
for (dn, _attrs) in lobjects:
|
|
|
if dn is None:
|
|
|
continue
|
|
|
|
|
|
try:
|
|
|
log.debug('Trying simple bind with %s' % dn)
|
|
|
server.simple_bind_s(dn, safe_str(password))
|
|
|
attrs = server.search_ext_s(dn, ldap.SCOPE_BASE,
|
|
|
'(objectClass=*)')[0][1]
|
|
|
break
|
|
|
|
|
|
except ldap.INVALID_CREDENTIALS:
|
|
|
log.debug("LDAP rejected password for user '%s' (%s): %s"
|
|
|
% (uid, username, dn))
|
|
|
|
|
|
else:
|
|
|
log.debug("No matching LDAP objects for authentication "
|
|
|
"of '%s' (%s)", uid, username)
|
|
|
raise LdapPasswordError()
|
|
|
|
|
|
except ldap.NO_SUCH_OBJECT:
|
|
|
log.debug("LDAP says no such user '%s' (%s)" % (uid, username))
|
|
|
raise LdapUsernameError()
|
|
|
except ldap.SERVER_DOWN:
|
|
|
raise LdapConnectionError("LDAP can't access authentication server")
|
|
|
|
|
|
return dn, attrs
|
|
|
|
|
|
|
|
|
class RhodeCodeAuthPlugin(auth_modules.RhodeCodeExternalAuthPlugin):
|
|
|
def __init__(self):
|
|
|
self._logger = logging.getLogger(__name__)
|
|
|
self._tls_kind_values = ["PLAIN", "LDAPS", "START_TLS"]
|
|
|
self._tls_reqcert_values = ["NEVER", "ALLOW", "TRY", "DEMAND", "HARD"]
|
|
|
self._search_scopes = ["BASE", "ONELEVEL", "SUBTREE"]
|
|
|
|
|
|
@hybrid_property
|
|
|
def name(self):
|
|
|
return "ldap"
|
|
|
|
|
|
def settings(self):
|
|
|
settings = [
|
|
|
{
|
|
|
"name": "host",
|
|
|
"validator": self.validators.UnicodeString(strip=True),
|
|
|
"type": "string",
|
|
|
"description": "Host of the LDAP Server",
|
|
|
"formname": "LDAP Host"
|
|
|
},
|
|
|
{
|
|
|
"name": "port",
|
|
|
"validator": self.validators.Number(strip=True, not_empty=True),
|
|
|
"type": "string",
|
|
|
"description": "Port that the LDAP server is listening on",
|
|
|
"default": 389,
|
|
|
"formname": "Port"
|
|
|
},
|
|
|
{
|
|
|
"name": "dn_user",
|
|
|
"validator": self.validators.UnicodeString(strip=True),
|
|
|
"type": "string",
|
|
|
"description": "User to connect to LDAP",
|
|
|
"formname": "Account"
|
|
|
},
|
|
|
{
|
|
|
"name": "dn_pass",
|
|
|
"validator": self.validators.UnicodeString(strip=True),
|
|
|
"type": "password",
|
|
|
"description": "Password to connect to LDAP",
|
|
|
"formname": "Password"
|
|
|
},
|
|
|
{
|
|
|
"name": "tls_kind",
|
|
|
"validator": self.validators.OneOf(self._tls_kind_values),
|
|
|
"type": "select",
|
|
|
"values": self._tls_kind_values,
|
|
|
"description": "TLS Type",
|
|
|
"default": 'PLAIN',
|
|
|
"formname": "Connection Security"
|
|
|
},
|
|
|
{
|
|
|
"name": "tls_reqcert",
|
|
|
"validator": self.validators.OneOf(self._tls_reqcert_values),
|
|
|
"type": "select",
|
|
|
"values": self._tls_reqcert_values,
|
|
|
"description": "Require Cert over TLS?",
|
|
|
"formname": "Certificate Checks"
|
|
|
},
|
|
|
{
|
|
|
"name": "base_dn",
|
|
|
"validator": self.validators.UnicodeString(strip=True),
|
|
|
"type": "string",
|
|
|
"description": "Base DN to search (e.g., dc=mydomain,dc=com)",
|
|
|
"formname": "Base DN"
|
|
|
},
|
|
|
{
|
|
|
"name": "filter",
|
|
|
"validator": self.validators.UnicodeString(strip=True),
|
|
|
"type": "string",
|
|
|
"description": "Filter to narrow results (e.g., ou=Users, etc)",
|
|
|
"formname": "LDAP Search Filter"
|
|
|
},
|
|
|
{
|
|
|
"name": "search_scope",
|
|
|
"validator": self.validators.OneOf(self._search_scopes),
|
|
|
"type": "select",
|
|
|
"values": self._search_scopes,
|
|
|
"description": "How deep to search LDAP",
|
|
|
"formname": "LDAP Search Scope"
|
|
|
},
|
|
|
{
|
|
|
"name": "attr_login",
|
|
|
"validator": self.validators.AttrLoginValidator(not_empty=True, strip=True),
|
|
|
"type": "string",
|
|
|
"description": "LDAP Attribute to map to user name",
|
|
|
"formname": "Login Attribute"
|
|
|
},
|
|
|
{
|
|
|
"name": "attr_firstname",
|
|
|
"validator": self.validators.UnicodeString(strip=True),
|
|
|
"type": "string",
|
|
|
"description": "LDAP Attribute to map to first name",
|
|
|
"formname": "First Name Attribute"
|
|
|
},
|
|
|
{
|
|
|
"name": "attr_lastname",
|
|
|
"validator": self.validators.UnicodeString(strip=True),
|
|
|
"type": "string",
|
|
|
"description": "LDAP Attribute to map to last name",
|
|
|
"formname": "Last Name Attribute"
|
|
|
},
|
|
|
{
|
|
|
"name": "attr_email",
|
|
|
"validator": self.validators.UnicodeString(strip=True),
|
|
|
"type": "string",
|
|
|
"description": "LDAP Attribute to map to email address",
|
|
|
"formname": "Email Attribute"
|
|
|
}
|
|
|
]
|
|
|
return settings
|
|
|
|
|
|
def use_fake_password(self):
|
|
|
return True
|
|
|
|
|
|
def user_activation_state(self):
|
|
|
def_user_perms = User.get_default_user().AuthUser.permissions['global']
|
|
|
return 'hg.extern_activate.auto' in def_user_perms
|
|
|
|
|
|
def auth(self, userobj, username, password, settings, **kwargs):
|
|
|
"""
|
|
|
Given a user object (which may be null), username, a plaintext password,
|
|
|
and a settings object (containing all the keys needed as listed in settings()),
|
|
|
authenticate this user's login attempt.
|
|
|
|
|
|
Return None on failure. On success, return a dictionary of the form:
|
|
|
|
|
|
see: RhodeCodeAuthPluginBase.auth_func_attrs
|
|
|
This is later validated for correctness
|
|
|
"""
|
|
|
|
|
|
if not username or not password:
|
|
|
log.debug('Empty username or password skipping...')
|
|
|
return None
|
|
|
|
|
|
kwargs = {
|
|
|
'server': settings.get('host', ''),
|
|
|
'base_dn': settings.get('base_dn', ''),
|
|
|
'port': settings.get('port'),
|
|
|
'bind_dn': settings.get('dn_user'),
|
|
|
'bind_pass': settings.get('dn_pass'),
|
|
|
'tls_kind': settings.get('tls_kind'),
|
|
|
'tls_reqcert': settings.get('tls_reqcert'),
|
|
|
'ldap_filter': settings.get('filter'),
|
|
|
'search_scope': settings.get('search_scope'),
|
|
|
'attr_login': settings.get('attr_login'),
|
|
|
'ldap_version': 3,
|
|
|
}
|
|
|
|
|
|
if kwargs['bind_dn'] and not kwargs['bind_pass']:
|
|
|
log.debug('Using dynamic binding.')
|
|
|
kwargs['bind_dn'] = kwargs['bind_dn'].replace('$login', username)
|
|
|
kwargs['bind_pass'] = password
|
|
|
log.debug('Checking for ldap authentication')
|
|
|
|
|
|
try:
|
|
|
aldap = AuthLdap(**kwargs)
|
|
|
(user_dn, ldap_attrs) = aldap.authenticate_ldap(username, password)
|
|
|
log.debug('Got ldap DN response %s' % user_dn)
|
|
|
|
|
|
get_ldap_attr = lambda k: ldap_attrs.get(settings.get(k), [''])[0]
|
|
|
|
|
|
# old attrs fetched from RhodeCode database
|
|
|
admin = getattr(userobj, 'admin', False)
|
|
|
active = getattr(userobj, 'active', True)
|
|
|
email = getattr(userobj, 'email', '')
|
|
|
firstname = getattr(userobj, 'firstname', '')
|
|
|
lastname = getattr(userobj, 'lastname', '')
|
|
|
extern_type = getattr(userobj, 'extern_type', '')
|
|
|
|
|
|
user_attrs = {
|
|
|
'username': username,
|
|
|
'firstname': safe_unicode(get_ldap_attr('attr_firstname') or firstname),
|
|
|
'lastname': safe_unicode(get_ldap_attr('attr_lastname') or lastname),
|
|
|
'groups': [],
|
|
|
'email': get_ldap_attr('attr_email' or email),
|
|
|
'admin': admin,
|
|
|
'active': active,
|
|
|
"active_from_extern": None,
|
|
|
'extern_name': user_dn,
|
|
|
'extern_type': extern_type,
|
|
|
}
|
|
|
log.info('user %s authenticated correctly' % user_attrs['username'])
|
|
|
return user_attrs
|
|
|
|
|
|
except (LdapUsernameError, LdapPasswordError, LdapImportError):
|
|
|
log.error(traceback.format_exc())
|
|
|
return None
|
|
|
except (Exception,):
|
|
|
log.error(traceback.format_exc())
|
|
|
return None
|
|
|
|
