# # Licensed under the Apache License, Version 2.0 (the "License"); you may # not use this file except in compliance with the License. You may obtain # a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the # License for the specific language governing permissions and limitations # under the License. import re import six from testtools.matchers import HasLength from testtools.matchers import MatchesRegex from heat.common import exception from heat.common import template_format from heat.engine import parser from heat.engine.resources.random_string import RandomString from heat.engine import template from heat.tests.common import HeatTestCase from heat.tests import utils class TestRandomString(HeatTestCase): template_random_string = ''' HeatTemplateFormatVersion: '2012-12-12' Resources: secret1: Type: OS::Heat::RandomString secret2: Type: OS::Heat::RandomString Properties: length: 10 secret3: Type: OS::Heat::RandomString Properties: length: 100 sequence: octdigits secret4: Type: OS::Heat::RandomString Properties: length: 32 character_classes: - class: digits min: 1 - class: uppercase min: 1 - class: lowercase min: 20 character_sequences: - sequence: (),[]{} min: 1 - sequence: $_ min: 2 - sequence: '@' min: 5 secret5: Type: OS::Heat::RandomString Properties: length: 25 character_classes: - class: digits min: 1 - class: uppercase min: 1 - class: lowercase min: 20 secret6: Type: OS::Heat::RandomString Properties: length: 10 character_sequences: - sequence: (),[]{} min: 1 - sequence: $_ min: 2 - sequence: '@' min: 5 ''' def setUp(self): super(TestRandomString, self).setUp() self.ctx = utils.dummy_context() def create_stack(self, templ): self.stack = self.parse_stack(template_format.parse(templ)) self.assertIsNone(self.stack.create()) return self.stack def parse_stack(self, t): stack_name = 'test_stack' tmpl = template.Template(t) stack = parser.Stack(utils.dummy_context(), stack_name, tmpl) stack.validate() stack.store() return stack def test_random_string(self): stack = self.create_stack(self.template_random_string) secret1 = stack['secret1'] def assert_min(pattern, string, minimum): self.assertTrue(len(re.findall(pattern, string)) >= minimum) random_string = secret1.FnGetAtt('value') assert_min('[a-zA-Z0-9]', random_string, 32) self.assertRaises(exception.InvalidTemplateAttribute, secret1.FnGetAtt, 'foo') self.assertEqual(random_string, secret1.FnGetRefId()) secret2 = stack['secret2'] random_string = secret2.FnGetAtt('value') assert_min('[a-zA-Z0-9]', random_string, 10) self.assertEqual(random_string, secret2.FnGetRefId()) secret3 = stack['secret3'] random_string = secret3.FnGetAtt('value') assert_min('[0-7]', random_string, 100) self.assertEqual(random_string, secret3.FnGetRefId()) secret4 = stack['secret4'] random_string = secret4.FnGetAtt('value') self.assertEqual(len(random_string), 32) assert_min('[0-9]', random_string, 1) assert_min('[A-Z]', random_string, 1) assert_min('[a-z]', random_string, 20) assert_min('[(),\[\]{}]', random_string, 1) assert_min('[$_]', random_string, 2) assert_min('@', random_string, 5) self.assertEqual(random_string, secret4.FnGetRefId()) secret5 = stack['secret5'] random_string = secret5.FnGetAtt('value') self.assertEqual(len(random_string), 25) assert_min('[0-9]', random_string, 1) assert_min('[A-Z]', random_string, 1) assert_min('[a-z]', random_string, 20) self.assertEqual(random_string, secret5.FnGetRefId()) secret6 = stack['secret6'] random_string = secret6.FnGetAtt('value') self.assertEqual(len(random_string), 10) assert_min('[(),\[\]{}]', random_string, 1) assert_min('[$_]', random_string, 2) assert_min('@', random_string, 5) self.assertEqual(random_string, secret6.FnGetRefId()) def test_invalid_property_combination(self): template_random_string = ''' HeatTemplateFormatVersion: '2012-12-12' Resources: secret: Type: OS::Heat::RandomString Properties: length: 32 sequence: octdigits character_classes: - class: digits min: 1 character_sequences: - sequence: (),[]{} min: 1 ''' exc = self.assertRaises(exception.StackValidationFailed, self.create_stack, template_random_string) self.assertEqual("Cannot use deprecated 'sequence' property along " "with 'character_sequences' or 'character_classes' " "properties", six.text_type(exc)) def test_invalid_length(self): template_random_string = ''' HeatTemplateFormatVersion: '2012-12-12' Resources: secret: Type: OS::Heat::RandomString Properties: length: 5 character_classes: - class: digits min: 5 character_sequences: - sequence: (),[]{} min: 1 ''' exc = self.assertRaises(exception.StackValidationFailed, self.create_stack, template_random_string) self.assertEqual("Length property cannot be smaller than combined " "character class and character sequence minimums", six.text_type(exc)) class TestGenerateRandomString(HeatTestCase): scenarios = [ ('lettersdigits', dict( length=1, seq='lettersdigits', pattern='[a-zA-Z0-9]')), ('letters', dict( length=10, seq='letters', pattern='[a-zA-Z]')), ('lowercase', dict( length=100, seq='lowercase', pattern='[a-z]')), ('uppercase', dict( length=50, seq='uppercase', pattern='[A-Z]')), ('digits', dict( length=512, seq='digits', pattern='[0-9]')), ('hexdigits', dict( length=16, seq='hexdigits', pattern='[A-F0-9]')), ('octdigits', dict( length=32, seq='octdigits', pattern='[0-7]')) ] def test_generate_random_string(self): # run each test multiple times to confirm random generator # doesn't generate a matching pattern by chance for i in range(1, 32): sequence = RandomString._sequences[self.seq] r = RandomString._deprecated_random_string(sequence, self.length) self.assertThat(r, HasLength(self.length)) regex = '%s{%s}' % (self.pattern, self.length) self.assertThat(r, MatchesRegex(regex))