# 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/>.

"""unit tests for cubicweb.web.application"""

import base64, Cookie

import sys

import httplib

from urllib import unquote

from logilab.common.testlib import TestCase, unittest_main

from logilab.common.decorators import clear_cache, classproperty

from cubicweb import AuthenticationError, Unauthorized

from cubicweb import view

from cubicweb.devtools.testlib import CubicWebTC, real_error_handling

from cubicweb.devtools.fake import FakeRequest

from cubicweb.web import LogOut, Redirect, INTERNAL_FIELD_VALUE

from cubicweb.web.views.basecontrollers import ViewController

from cubicweb.web.application import anonymized_request

from cubicweb.dbapi import DBAPISession, _NeedAuthAccessMock

from cubicweb import repoapi

class FakeMapping:

    """emulates a mapping module"""

    def __init__(self):

        self.ENTITIES_MAP = {}

        self.ATTRIBUTES_MAP = {}

        self.RELATIONS_MAP = {}

class MockCursor:

    def __init__(self):

        self.executed = []

    def execute(self, rql, args=None, build_descr=False):

        args = args or {}

        self.executed.append(rql % args)

class FakeController(ViewController):

    def __init__(self, form=None):

        self._cw = FakeRequest()

        self._cw.form = form or {}

        self._cursor = MockCursor()

        self._cw.execute = self._cursor.execute

    def new_cursor(self):

        self._cursor = MockCursor()

        self._cw.execute = self._cursor.execute

    def set_form(self, form):

        self._cw.form = form

class RequestBaseTC(TestCase):

    def setUp(self):

        self._cw = FakeRequest()

    def test_list_arg(self):

        """tests the list_arg() function"""

        list_arg = self._cw.list_form_param

        self.assertEqual(list_arg('arg3', {}), [])

        d = {'arg1' : "value1",

             'arg2' : ('foo', INTERNAL_FIELD_VALUE,),

             'arg3' : ['bar']}

        self.assertEqual(list_arg('arg1', d, True), ['value1'])

        self.assertEqual(d, {'arg2' : ('foo', INTERNAL_FIELD_VALUE), 'arg3' : ['bar'],})

        self.assertEqual(list_arg('arg2', d, True), ['foo'])

        self.assertEqual({'arg3' : ['bar'],}, d)

        self.assertEqual(list_arg('arg3', d), ['bar',])

        self.assertEqual({'arg3' : ['bar'],}, d)

    def test_from_controller(self):

        self._cw.vreg['controllers'] = {'view': 1, 'login': 1}

        self.assertEqual(self._cw.from_controller(), 'view')

        req = FakeRequest(url='project?vid=list')

        req.vreg['controllers'] = {'view': 1, 'login': 1}

        # this assertion is just to make sure that relative_path can be

        # correctly computed as it is used in from_controller()

        self.assertEqual(req.relative_path(False), 'project')

        self.assertEqual(req.from_controller(), 'view')

        # test on a valid non-view controller

        req = FakeRequest(url='login?x=1&y=2')

        req.vreg['controllers'] = {'view': 1, 'login': 1}

        self.assertEqual(req.relative_path(False), 'login')

        self.assertEqual(req.from_controller(), 'login')

class UtilsTC(TestCase):

    """test suite for misc application utilities"""

    def setUp(self):

        self.ctrl = FakeController()

    #def test_which_mapping(self):

    #    """tests which mapping is used (application or core)"""

    #    init_mapping()

    #    from cubicweb.common import mapping

    #    self.assertEqual(mapping.MAPPING_USED, 'core')

    #    sys.modules['mapping'] = FakeMapping()

    #    init_mapping()

    #    self.assertEqual(mapping.MAPPING_USED, 'application')

    #    del sys.modules['mapping']

    def test_execute_linkto(self):

        """tests the execute_linkto() function"""

        self.assertEqual(self.ctrl.execute_linkto(), None)

        self.assertEqual(self.ctrl._cursor.executed,

                          [])

        self.ctrl.set_form({'__linkto' : 'works_for:12_13_14:object',

                              'eid': 8})

        self.ctrl.execute_linkto()

        self.assertEqual(self.ctrl._cursor.executed,

                          ['SET Y works_for X WHERE X eid 8, Y eid %s' % i

                           for i in (12, 13, 14)])

        self.ctrl.new_cursor()

        self.ctrl.set_form({'__linkto' : 'works_for:12_13_14:subject',

                              'eid': 8})

        self.ctrl.execute_linkto()

        self.assertEqual(self.ctrl._cursor.executed,

                          ['SET X works_for Y WHERE X eid 8, Y eid %s' % i

                           for i in (12, 13, 14)])

        self.ctrl.new_cursor()

        self.ctrl._cw.form = {'__linkto' : 'works_for:12_13_14:object'}

        self.ctrl.execute_linkto(eid=8)

        self.assertEqual(self.ctrl._cursor.executed,

                          ['SET Y works_for X WHERE X eid 8, Y eid %s' % i

                           for i in (12, 13, 14)])

        self.ctrl.new_cursor()

        self.ctrl.set_form({'__linkto' : 'works_for:12_13_14:subject'})

        self.ctrl.execute_linkto(eid=8)

        self.assertEqual(self.ctrl._cursor.executed,

                          ['SET X works_for Y WHERE X eid 8, Y eid %s' % i

                           for i in (12, 13, 14)])

class ApplicationTC(CubicWebTC):

    @classproperty

    def config(cls):

        try:

            return cls.__dict__['_config']

        except KeyError:

            config = super(ApplicationTC, cls).config

            config.global_set_option('allow-email-login', True)

            return config

    def test_cnx_user_groups_sync(self):

        with self.admin_access.client_cnx() as cnx:

            user = cnx.user

            self.assertEqual(user.groups, set(('managers',)))

            cnx.execute('SET X in_group G WHERE X eid %s, G name "guests"' % user.eid)

            user = cnx.user

            self.assertEqual(user.groups, set(('managers',)))

            cnx.commit()

            user = cnx.user

            self.assertEqual(user.groups, set(('managers', 'guests')))

            # cleanup

            cnx.execute('DELETE X in_group G WHERE X eid %s, G name "guests"' % user.eid)

            cnx.commit()

    def test_publish_validation_error(self):

        with self.admin_access.web_request() as req:

            user = self.user()

            eid = unicode(user.eid)

            req.form = {

                'eid':       eid,

                '__type:'+eid:    'CWUser', '_cw_entity_fields:'+eid: 'login-subject',

                'login-subject:'+eid:     '', # ERROR: no login specified

                 # just a sample, missing some necessary information for real life

                '__errorurl': 'view?vid=edition...'

                }

            path, params = self.expect_redirect_handle_request(req, 'edit')

            forminfo = req.session.data['view?vid=edition...']

            eidmap = forminfo['eidmap']

            self.assertEqual(eidmap, {})

            values = forminfo['values']

            self.assertEqual(values['login-subject:'+eid], '')

            self.assertEqual(values['eid'], eid)

            error = forminfo['error']

            self.assertEqual(error.entity, user.eid)

            self.assertEqual(error.errors['login-subject'], 'required field')

    def test_validation_error_dont_loose_subentity_data_ctrl(self):

        """test creation of two linked entities

        error occurs on the web controller

        """

        with self.admin_access.web_request() as req:

            # set Y before X to ensure both entities are edited, not only X

            req.form = {'eid': ['Y', 'X'], '__maineid': 'X',

                        '__type:X': 'CWUser', '_cw_entity_fields:X': 'login-subject',

                        # missing required field

                        'login-subject:X': u'',

                        # but email address is set

                        '__type:Y': 'EmailAddress', '_cw_entity_fields:Y': 'address-subject',

                        'address-subject:Y': u'bougloup@logilab.fr',

                        'use_email-object:Y': 'X',

                        # necessary to get validation error handling

                        '__errorurl': 'view?vid=edition...',

                        }

            path, params = self.expect_redirect_handle_request(req, 'edit')

            forminfo = req.session.data['view?vid=edition...']

            self.assertEqual(set(forminfo['eidmap']), set('XY'))

            self.assertEqual(forminfo['eidmap']['X'], None)

            self.assertIsInstance(forminfo['eidmap']['Y'], int)

            self.assertEqual(forminfo['error'].entity, 'X')

            self.assertEqual(forminfo['error'].errors,

                              {'login-subject': 'required field'})

            self.assertEqual(forminfo['values'], req.form)

    def test_validation_error_dont_loose_subentity_data_repo(self):

        """test creation of two linked entities

        error occurs on the repository

        """

        with self.admin_access.web_request() as req:

            # set Y before X to ensure both entities are edited, not only X

            req.form = {'eid': ['Y', 'X'], '__maineid': 'X',

                        '__type:X': 'CWUser', '_cw_entity_fields:X': 'login-subject,upassword-subject',

                        # already existent user

                        'login-subject:X': u'admin',

                        'upassword-subject:X': u'admin', 'upassword-subject-confirm:X': u'admin',

                        '__type:Y': 'EmailAddress', '_cw_entity_fields:Y': 'address-subject',

                        'address-subject:Y': u'bougloup@logilab.fr',

                        'use_email-object:Y': 'X',

                        # necessary to get validation error handling

                        '__errorurl': 'view?vid=edition...',

                        }

            path, params = self.expect_redirect_handle_request(req, 'edit')

            forminfo = req.session.data['view?vid=edition...']

            self.assertEqual(set(forminfo['eidmap']), set('XY'))

            self.assertIsInstance(forminfo['eidmap']['X'], int)

            self.assertIsInstance(forminfo['eidmap']['Y'], int)

            self.assertEqual(forminfo['error'].entity, forminfo['eidmap']['X'])

            self.assertEqual(forminfo['error'].errors,

                              {'login-subject': u'the value "admin" is already used, use another one'})

            self.assertEqual(forminfo['values'], req.form)

    def test_ajax_view_raise_arbitrary_error(self):

        class ErrorAjaxView(view.View):

            __regid__ = 'test.ajax.error'

            def call(self):

                raise Exception('whatever')

        with self.temporary_appobjects(ErrorAjaxView):

            with real_error_handling(self.app) as app:

                with self.admin_access.web_request(vid='test.ajax.error') as req:

                    req.ajax_request = True

                    page = app.handle_request(req, '')

        self.assertEqual(httplib.INTERNAL_SERVER_ERROR,

                         req.status_out)

    def _test_cleaned(self, kwargs, injected, cleaned):

        with self.admin_access.web_request(**kwargs) as req:

            page = self.app_handle_request(req, 'view')

            self.assertNotIn(injected, page)

            self.assertIn(cleaned, page)

    def test_nonregr_script_kiddies(self):

        """test against current script injection"""

        injected = '<i>toto</i>'

        cleaned = 'toto'

        for kwargs in ({'__message': injected},

                       {'vid': injected},

                       {'vtitle': injected},

                       ):

            yield self._test_cleaned, kwargs, injected, cleaned

    def test_site_wide_eproperties_sync(self):

        # XXX work in all-in-one configuration but not in twisted for instance

        # in which case we need a kindof repo -> http server notification

        # protocol

        vreg = self.app.vreg

        # default value

        self.assertEqual(vreg.property_value('ui.language'), 'en')

        with self.admin_access.client_cnx() as cnx:

            cnx.execute('INSERT CWProperty X: X value "fr", X pkey "ui.language"')

            self.assertEqual(vreg.property_value('ui.language'), 'en')

            cnx.commit()

            self.assertEqual(vreg.property_value('ui.language'), 'fr')

            cnx.execute('SET X value "de" WHERE X pkey "ui.language"')

            self.assertEqual(vreg.property_value('ui.language'), 'fr')

            cnx.commit()

            self.assertEqual(vreg.property_value('ui.language'), 'de')

            cnx.execute('DELETE CWProperty X WHERE X pkey "ui.language"')

            self.assertEqual(vreg.property_value('ui.language'), 'de')

            cnx.commit()

            self.assertEqual(vreg.property_value('ui.language'), 'en')

    # authentication tests ####################################################

    def test_http_auth_no_anon(self):

        req, origsession = self.init_authentication('http')

        self.assertAuthFailure(req)

        self.app.handle_request(req, 'login')

        self.assertEqual(401, req.status_out)

        clear_cache(req, 'get_authorization')

        authstr = base64.encodestring('%s:%s' % (self.admlogin, self.admpassword))

        req.set_request_header('Authorization', 'basic %s' % authstr)

        self.assertAuthSuccess(req, origsession)

        self.assertRaises(LogOut, self.app_handle_request, req, 'logout')

        self.assertEqual(len(self.open_sessions), 0)

    def test_cookie_auth_no_anon(self):

        req, origsession = self.init_authentication('cookie')

        self.assertAuthFailure(req)

        try:

            form = self.app.handle_request(req, 'login')

        except Redirect as redir:

            self.fail('anonymous user should get login form')

        clear_cache(req, 'get_authorization')

        self.assertTrue('__login' in form)

        self.assertTrue('__password' in form)

        self.assertFalse(req.cnx) # Mock cnx are False

        req.form['__login'] = self.admlogin

        req.form['__password'] = self.admpassword

        self.assertAuthSuccess(req, origsession)

        self.assertRaises(LogOut, self.app_handle_request, req, 'logout')

        self.assertEqual(len(self.open_sessions), 0)

    def test_login_by_email(self):

        with self.admin_access.client_cnx() as cnx:

            login = cnx.user.login

            address = login + u'@localhost'

            cnx.execute('INSERT EmailAddress X: X address %(address)s, U primary_email X '

                        'WHERE U login %(login)s', {'address': address, 'login': login})

            cnx.commit()

        # # option allow-email-login not set

        req, origsession = self.init_authentication('cookie')

        # req.form['__login'] = address

        # req.form['__password'] = self.admpassword

        # self.assertAuthFailure(req)

        # option allow-email-login set

        #origsession.login = address

        self.set_option('allow-email-login', True)

        req.form['__login'] = address

        req.form['__password'] = self.admpassword

        self.assertAuthSuccess(req, origsession)

        self.assertRaises(LogOut, self.app_handle_request, req, 'logout')