1 # Copyright (c) 2014 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 from autotest_lib.client.common_lib import error 6 from autotest_lib.client.common_lib.cros.network import tcpdump_analyzer 7 from autotest_lib.client.common_lib.cros.network import xmlrpc_datatypes 8 from autotest_lib.server.cros.network import hostap_config 9 from autotest_lib.server.cros.network import packet_capturer 10 from autotest_lib.server.cros.network import wifi_cell_test_base 11 12 13 class network_WiFi_VisibleScan(wifi_cell_test_base.WiFiCellTestBase): 14 """Test scanning behavior when no hidden SSIDs are configured.""" 15 16 version = 1 17 18 BROADCAST_SSID = '' 19 20 def parse_additional_arguments(self, commandline_args, additional_params): 21 """ 22 Hook into super class to take control files parameters. 23 24 @param commandline_args: dict of parsed parameters from the autotest. 25 @param additional_params: list of HostapConfig objects. 26 27 """ 28 self._ap_configs = additional_params 29 30 31 def run_once(self): 32 """Test body.""" 33 ap_config = hostap_config.HostapConfig(channel=1) 34 35 # Start capture before starting anything else. 36 self.context.capture_host.start_capture( 37 ap_config.frequency, 38 ht_type=ap_config.ht_packet_capture_mode, 39 snaplen=packet_capturer.SNAPLEN_WIFI_PROBE_REQUEST) 40 41 # We're looking for the MAC address, so disable randomization. 42 with self.context.client.mac_address_randomization(False): 43 # Set up the router and associate the client with it. 44 self.context.configure(ap_config) 45 assoc_params = xmlrpc_datatypes.AssociationParameters( 46 ssid=self.context.router.get_ssid()) 47 48 self.context.assert_connect_wifi(assoc_params) 49 results = self.context.capture_host.stop_capture() 50 51 if len(results) != 1: 52 raise error.TestError('Expected to generate one packet ' 53 'capture but got %d instead.' % 54 len(results)) 55 probe_ssids = tcpdump_analyzer.get_probe_ssids( 56 results[0].local_pcap_path, 57 probe_sender=self.context.client.wifi_mac) 58 # We expect a broadcast probe, but it's not guaranteed. 59 expected_ssids = frozenset([self.BROADCAST_SSID]) 60 permitted_ssids = (expected_ssids | 61 frozenset([self.context.router.get_ssid()])) 62 # Verify probe result does not contain any unpermitted ssids 63 if probe_ssids - permitted_ssids: 64 raise error.TestError('Permitted SSIDs %s, but got %s' % 65 (permitted_ssids, probe_ssids)) 66
