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#This file is part of Tryton. The COPYRIGHT file at the top level of
#this repository contains the full copyright notices and license terms.
import logging
import urlparse
import ldap
from trytond.transaction import Transaction
from trytond.pool import Pool, PoolMeta
from trytond.config import config, parse_uri
__all__ = ['User']
__metaclass__ = PoolMeta
logger = logging.getLogger(__name__)
section = 'ldap_authentication'
def parse_ldap_url(uri):
unquote = urlparse.unquote
uri = parse_uri(uri)
dn = unquote(uri.path)[1:]
attributes, scope, filter_, extensions = (
uri.query.split('?') + [''] * 4)[:4]
if not scope:
scope = 'base'
extensions = urlparse.parse_qs(extensions)
return (uri, dn, unquote(attributes), unquote(scope), unquote(filter_),
extensions)
def ldap_connection():
uri = config.get(section, 'uri')
if not uri:
return
uri, _, _, _, _, extensions = parse_ldap_url(uri)
if uri.scheme.startswith('ldaps'):
scheme, port = 'ldaps', 636
else:
scheme, port = 'ldap', 389
conn = ldap.initialize('%s://%s:%s/' % (
scheme, uri.hostname, uri.port or port))
if config.getboolean(section, 'active_directory', 'False'):
conn.set_option(ldap.OPT_REFERRALS, 0)
if 'tls' in uri.scheme:
conn.start_tls_s()
bindname = extensions.get('bindname')
if not bindname:
bindname = extensions.get('!bindname')
if bindname:
# XXX find better way to get the password
conn.simple_bind_s(bindname, config.get(section, 'bind_pass'))
return conn
class User:
__name__ = 'res.user'
@classmethod
def __setup__(cls):
super(User, cls).__setup__()
cls._error_messages.update({
'set_passwd_ldap_user': (
'You can not set the password of ldap user "%s".'),
})
@staticmethod
def ldap_search_user(login, con, attrs=None):
'''
Return the result of a ldap search for the login using the ldap
connection con based on connection.
The attributes values defined in attrs will be return.
'''
_, dn, _, scope, filter_, _ = parse_ldap_url(
config.get(section, 'uri'))
scope = {
'base': ldap.SCOPE_BASE,
'onelevel': ldap.SCOPE_ONELEVEL,
'subtree': ldap.SCOPE_SUBTREE,
}.get(scope)
uid = config.get(section, 'uid', 'uid')
if filter_:
filter_ = '(&(%s=%s)%s)' % (uid, login, filter_)
else:
filter_ = '(%s=%s)' % (uid, login)
result = con.search_s(dn, scope, filter_, attrs)
if config.get(section, 'active_directory'):
result = [x for x in result if x[0]]
if result and len(result) > 1:
logger.info('ldap_search_user found more than 1 user')
return result
@classmethod
def _check_passwd_ldap_user(cls, logins):
find = False
try:
con = ldap_connection()
if not con:
return
for login in logins:
if cls.ldap_search_user(login, con, attrs=[]):
find = True
break
except ldap.LDAPError, e:
logger.error('LDAPError: %s' % str(e))
if find:
cls.raise_user_error('set_passwd_ldap_user', (login.rec_name,))
@classmethod
def create(cls, vlist):
tocheck = []
for values in vlist:
if values.get('password') and 'login' in values:
tocheck.append(values['login'])
if tocheck:
with Transaction().set_context(_check_access=False):
cls._check_passwd_ldap_user(tocheck)
return super(User, cls).create(vlist)
@classmethod
def write(cls, *args):
actions = iter(args)
for users, values in zip(actions, actions):
if values.get('password'):
logins = [x.login for x in users]
cls._check_passwd_ldap_user(logins)
super(User, cls).write(*args)
@classmethod
def set_preferences(cls, values, old_password=False):
if 'password' in values:
try:
con = ldap_connection()
if con:
user = cls(Transaction().user)
uid = config.get(section, 'uid', 'uid')
users = cls.ldap_search_user(user.login, con, attrs=[uid])
if users and len(users) == 1:
[(dn, attrs)] = users
if con.simple_bind_s(dn, old_password):
con.passwd_s(dn, old_password, values['password'])
values = values.copy()
del values['password']
else:
cls.raise_user_error('wrong_password')
except ldap.LDAPError, e:
logger.error('LDAPError: %s' % str(e))
super(User, cls).set_preferences(values, old_password=old_password)
@classmethod
def get_login(cls, login, password):
pool = Pool()
LoginAttempt = pool.get('res.user.login.attempt')
try:
con = ldap_connection()
if con:
uid = config.get(section, 'uid', 'uid')
users = cls.ldap_search_user(login, con, attrs=[uid])
if users and len(users) == 1:
[(dn, attrs)] = users
if password and con.simple_bind_s(dn, password):
user_id, _ = cls._get_login(login)
if user_id:
LoginAttempt.remove(login)
return user_id
elif config.getboolean(section, 'create_user'):
user, = cls.create([{
'name': attrs.get(uid, [login])[0],
'login': login,
}])
return user.id
except ldap.LDAPError, e:
logger.error('LDAPError: %s' % str(e))
return super(User, cls).get_login(login, password)
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