# copyright 2003-2014 LOGILAB S.A. (Paris, FRANCE), all rights reserved.

# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr

#

# This file is part of CubicWeb.

#

# CubicWeb is free software: you can redistribute it and/or modify it under the

# terms of the GNU Lesser General Public License as published by the Free

# Software Foundation, either version 2.1 of the License, or (at your option)

# any later version.

#

# CubicWeb 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 Lesser General Public License for more

# details.

#

# You should have received a copy of the GNU Lesser General Public License along

# with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.

"""cubicweb.server.sources.ldapusers unit and functional tests"""

import os

import sys

import shutil

import time

from os.path import join, exists

import subprocess

import tempfile

from logilab.common.testlib import TestCase, unittest_main, mock_object, Tags

from cubicweb import AuthenticationError

from cubicweb.devtools.testlib import CubicWebTC

from cubicweb.devtools.repotest import RQLGeneratorTC

from cubicweb.devtools.httptest import get_available_port

CONFIG_LDAPFEED = u'''

user-base-dn=ou=People,dc=cubicweb,dc=test

group-base-dn=ou=Group,dc=cubicweb,dc=test

user-attrs-map=uid=login,mail=email,userPassword=upassword

group-attrs-map=cn=name,memberUid=member

'''

CONFIG_LDAPUSER = u'''

user-base-dn=ou=People,dc=cubicweb,dc=test

user-attrs-map=uid=login,mail=email,userPassword=upassword

'''

URL = None

def create_slapd_configuration(cls):

    global URL

    slapddir = tempfile.mkdtemp('cw-unittest-ldap')

    config = cls.config

    slapdconf = join(config.apphome, "slapd.conf")

    confin = file(join(config.apphome, "slapd.conf.in")).read()

    confstream = file(slapdconf, 'w')

    confstream.write(confin % {'apphome': config.apphome, 'testdir': slapddir})

    confstream.close()

    # fill ldap server with some data

    ldiffile = join(config.apphome, "ldap_test.ldif")

    config.info('Initing ldap database')

    cmdline = ['/usr/sbin/slapadd', '-f', slapdconf, '-l', ldiffile, '-c']

    PIPE = subprocess.PIPE

    slapproc = subprocess.Popen(cmdline, stdout=PIPE, stderr=PIPE)

    stdout, stderr = slapproc.communicate()

    if slapproc.returncode:

        print >> sys.stderr, ('slapadd returned with status: %s'

                              % slapproc.returncode)

        sys.stdout.write(stdout)

        sys.stderr.write(stderr)

    #ldapuri = 'ldapi://' + join(basedir, "ldapi").replace('/', '%2f')

    port = get_available_port(xrange(9000, 9100))

    host = 'localhost:%s' % port

    ldapuri = 'ldap://%s' % host

    cmdline = ["/usr/sbin/slapd", "-f",  slapdconf,  "-h",  ldapuri, "-d", "0"]

    config.info('Starting slapd:', ' '.join(cmdline))

    PIPE = subprocess.PIPE

    cls.slapd_process = subprocess.Popen(cmdline, stdout=PIPE, stderr=PIPE)

    time.sleep(0.2)

    if cls.slapd_process.poll() is None:

        config.info('slapd started with pid %s', cls.slapd_process.pid)

    else:

        raise EnvironmentError('Cannot start slapd with cmdline="%s" (from directory "%s")' %

                               (" ".join(cmdline), os.getcwd()))

    URL = u'ldap://%s' % host

    return slapddir

def terminate_slapd(cls):

    config = cls.config

    if cls.slapd_process and cls.slapd_process.returncode is None:

        config.info('terminating slapd')

        if hasattr(cls.slapd_process, 'terminate'):

            cls.slapd_process.terminate()

        else:

            import os, signal

            os.kill(cls.slapd_process.pid, signal.SIGTERM)

        stdout, stderr = cls.slapd_process.communicate()

        if cls.slapd_process.returncode:

            print >> sys.stderr, ('slapd returned with status: %s'

                                  % cls.slapd_process.returncode)

            sys.stdout.write(stdout)

            sys.stderr.write(stderr)

        config.info('DONE')

class LDAPFeedTestBase(CubicWebTC):

    test_db_id = 'ldap-feed'

    loglevel = 'ERROR'

    @classmethod

    def setUpClass(cls):

        from cubicweb.cwctl import init_cmdline_log_threshold

        init_cmdline_log_threshold(cls.config, cls.loglevel)

        cls._tmpdir = create_slapd_configuration(cls)

    @classmethod

    def tearDownClass(cls):

        terminate_slapd(cls)

        try:

            shutil.rmtree(cls._tmpdir)

        except:

            pass

    @classmethod

    @classmethod

    def setup_database(self):

    def add_ldap_entry(self, dn, mods):

        """

        add an LDAP entity

        """

        modcmd = ['dn: %s'%dn, 'changetype: add']

        for key, values in mods.iteritems():

            if isinstance(values, basestring):

                values = [values]

            for value in values:

                modcmd.append('%s: %s'%(key, value))

        self._ldapmodify(modcmd)

    def delete_ldap_entry(self, dn):

        """

        delete an LDAP entity

        """

        modcmd = ['dn: %s'%dn, 'changetype: delete']

        self._ldapmodify(modcmd)

    def update_ldap_entry(self, dn, mods):

        """

        modify one or more attributes of an LDAP entity

        """

        modcmd = ['dn: %s'%dn, 'changetype: modify']

        for (kind, key), values in mods.iteritems():

            modcmd.append('%s: %s' % (kind, key))

            if isinstance(values, basestring):

                values = [values]

            for value in values:

                modcmd.append('%s: %s'%(key, value))

            modcmd.append('-')

        self._ldapmodify(modcmd)

    def _ldapmodify(self, modcmd):

        uri = self.repo.sources_by_uri['ldap'].urls[0]

        updatecmd = ['ldapmodify', '-H', uri, '-v', '-x', '-D',

                     'cn=admin,dc=cubicweb,dc=test', '-w', 'cw']

        PIPE = subprocess.PIPE

        p = subprocess.Popen(updatecmd, stdin=PIPE, stdout=PIPE, stderr=PIPE)

        p.stdin.write('\n'.join(modcmd))

        p.stdin.close()

        if p.wait():

            raise RuntimeError("ldap update failed: %s"%('\n'.join(p.stderr.readlines())))

class CheckWrongGroup(LDAPFeedTestBase):

    """

    A testcase for situations where the default group for CWUser

    created from LDAP is wrongly configured.

    """

    def test_wrong_group(self):

            config = source.repo_source.check_config(source)

            # inject a bogus group here, along with at least a valid one

            config['user-default-group'] = ('thisgroupdoesnotexists','users')

            source.repo_source.update_config(source, config)

            # here we emitted an error log entry

class LDAPFeedUserTC(LDAPFeedTestBase):

    """

    A testcase for CWUser support in ldapfeed (basic tests and authentication).

    """

    def assertMetadata(self, entity):

        self.assertTrue(entity.creation_date)

        self.assertTrue(entity.modification_date)

    def test_authenticate(self):

        source = self.repo.sources_by_uri['ldap']

        self.assertTrue(self.repo.connect('syt', password='syt'))

    def test_base(self):

    def test_copy_to_system_source(self):

        "make sure we can 'convert' an LDAP user into a system one"

class LDAPFeedUserDeletionTC(LDAPFeedTestBase):

    """

    A testcase for situations where users are deleted from or

    """

    def test_a_filter_inactivate(self):

        """ filtered out people should be deactivated, unable to authenticate """

        self.assertRaises(AuthenticationError, self.repo.connect, 'syt', password='syt')

    def test_delete(self):

        """ delete syt, pull, check deactivation, repull,

        read syt, pull, check activation

        """

        self.delete_ldap_entry('uid=syt,ou=People,dc=cubicweb,dc=test')

        self.assertRaises(AuthenticationError, self.repo.connect, 'syt', password='syt')

        # reinsert syt

        self.add_ldap_entry('uid=syt,ou=People,dc=cubicweb,dc=test',

                            { 'objectClass': ['OpenLDAPperson','posixAccount','top','shadowAccount'],

                              'cn': 'Sylvain Thenault',

                              'sn': 'Thenault',

                              'gidNumber': '1004',

                              'uid': 'syt',

                              'homeDirectory': '/home/syt',

                              'shadowFlag': '134538764',

                              'uidNumber': '1004',