1 # Copyright 2015 The Chromium OS Authors. All rights reserved. 2 # Use of this source code is governed by a BSD-style license that can be 3 # found in the LICENSE file. 4 5 import logging 6 7 from autotest_lib.client.common_lib import error 8 from autotest_lib.client.cros.enterprise import enterprise_policy_base 9 10 11 class policy_URLBlacklist(enterprise_policy_base.EnterprisePolicyTest): 12 """Test effect of URLBlacklist policy on Chrome OS behavior. 13 14 Navigate to all the websites in the ALL_URLS_LIST. Verify that the 15 websites specified by the URLBlackList policy are blocked. Throw a warning 16 if the user message on the blocked page is incorrect. 17 18 Two test cases (SinglePage_Blocked, MultiplePages_Blocked) are designed to 19 verify that the URLs specified in the URLBlacklist policy are blocked. 20 The third test case (NotSet_Allowed) is designed to verify that none of 21 the URLs are blocked since the URLBlacklist policy is set to None 22 23 The test case shall pass if the URLs that are part of the URLBlacklist 24 policy value are blocked. The test case shall also pass if the URLs that 25 are not part of the URLBlacklist policy value are allowed. The test case 26 shall fail if the above behavior is not enforced. 27 28 """ 29 version = 1 30 31 def initialize(self, **kwargs): 32 """Initialize this test.""" 33 self._initialize_test_constants() 34 super(policy_URLBlacklist, self).initialize(**kwargs) 35 self.start_webserver() 36 37 38 def _initialize_test_constants(self): 39 """Initialize test-specific constants, some from class constants.""" 40 self.POLICY_NAME = 'URLBlacklist' 41 self.URL_BASE = '%s/%s' % (self.WEB_HOST, 'website') 42 self.ALL_URLS_LIST = [self.URL_BASE + website for website in 43 ['/website1.html', 44 '/website2.html', 45 '/website3.html']] 46 self.SINGLE_BLACKLISTED_FILE = self.ALL_URLS_LIST[:1] 47 self.MULTIPLE_BLACKLISTED_FILES = self.ALL_URLS_LIST[:2] 48 self.BLOCKED_USER_MESSAGE = 'Webpage Blocked' 49 self.BLOCKED_ERROR_MESSAGE = 'ERR_BLOCKED_BY_ADMINISTRATOR' 50 51 self.TEST_CASES = { 52 'NotSet_Allowed': None, 53 'SinglePage_Blocked': self.SINGLE_BLACKLISTED_FILE, 54 'MultiplePages_Blocked': self.MULTIPLE_BLACKLISTED_FILES, 55 } 56 self.SUPPORTING_POLICIES = {'URLWhitelist': None} 57 58 59 def _scrape_text_from_webpage(self, tab): 60 """Return a list of filtered text on the web page. 61 62 @param tab: tab containing the website to be parsed. 63 @raises: TestFail if the expected text was not found on the page. 64 """ 65 parsed_message_string = '' 66 parsed_message_list = [] 67 page_scrape_cmd = 'document.getElementById("main-message").innerText;' 68 try: 69 parsed_message_string = tab.EvaluateJavaScript(page_scrape_cmd) 70 except Exception as err: 71 raise error.TestFail('Unable to find the expected ' 72 'text content on the test ' 73 'page: %s\n %r'%(tab.url, err)) 74 logging.info('Parsed message:%s', parsed_message_string) 75 parsed_message_list = [str(word) for word in 76 parsed_message_string.split('\n') if word] 77 return parsed_message_list 78 79 80 def _is_url_blocked(self, url): 81 """Return True if the URL is blocked else returns False. 82 83 @param url: The URL to be checked whether it is blocked. 84 """ 85 parsed_message_list = [] 86 tab = self.navigate_to_url(url) 87 parsed_message_list = self._scrape_text_from_webpage(tab) 88 if len(parsed_message_list) == 2 and \ 89 parsed_message_list[0] == 'Website enabled' and \ 90 parsed_message_list[1] == 'Website is enabled': 91 return False 92 93 # Check if accurate user error message is shown on the error page. 94 if parsed_message_list[0] != self.BLOCKED_USER_MESSAGE or \ 95 parsed_message_list[1] != self.BLOCKED_ERROR_MESSAGE: 96 logging.warning('The Blocked page user notification ' 97 'messages, %s and %s are not displayed on ' 98 'the blocked page. The messages may have ' 99 'been modified. Please check and update the ' 100 'messages in this file accordingly.', 101 self.BLOCKED_USER_MESSAGE, 102 self.BLOCKED_ERROR_MESSAGE) 103 return True 104 105 106 def _test_url_blacklist(self, policy_value): 107 """Verify CrOS enforces URLBlacklist policy value. 108 109 Navigate to all the websites in the ALL_URLS_LIST. Verify that 110 the websites specified in the URLWhitelist policy value are allowed. 111 Also verify that the websites not in the URLWhitelist policy value 112 are blocked. 113 114 @param policy_value: policy value expected. 115 116 @raises: TestFail if url is blocked/not blocked based on the 117 corresponding policy values. 118 """ 119 for url in self.ALL_URLS_LIST: 120 url_is_blocked = self._is_url_blocked(url) 121 if policy_value: 122 if url in policy_value and not url_is_blocked: 123 raise error.TestFail('The URL %s should have been blocked' 124 ' by policy, but was allowed.' % url) 125 elif url_is_blocked: 126 raise error.TestFail('The URL %s should have been allowed' 127 'by policy, but was blocked.' % url) 128 129 130 def run_once(self, case): 131 """Setup and run the test configured for the specified test case. 132 133 @param case: Name of the test case to run. 134 """ 135 case_value = self.TEST_CASES[case] 136 self.SUPPORTING_POLICIES[self.POLICY_NAME] = case_value 137 self.setup_case(user_policies=self.SUPPORTING_POLICIES) 138 self._test_url_blacklist(case_value) 139
