Tien Chang | a2581fb | 2016-05-06 15:10:09 -0700 | [diff] [blame^] | 1 | # Copyright 2016 The Chromium OS Authors. All rights reserved. |
Roshan Pius | c6db3d0 | 2015-04-28 15:15:48 -0700 | [diff] [blame] | 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 | import os |
| 7 | import time |
| 8 | import re |
Bindu Mahadev | 36d9e6e | 2016-03-28 16:34:40 -0700 | [diff] [blame] | 9 | import shutil |
Roshan Pius | c6db3d0 | 2015-04-28 15:15:48 -0700 | [diff] [blame] | 10 | |
| 11 | import common |
| 12 | from autotest_lib.client.common_lib.cros.network import ap_constants |
| 13 | from autotest_lib.client.common_lib.cros.network import iw_runner |
| 14 | from autotest_lib.server import hosts |
| 15 | from autotest_lib.server import frontend |
| 16 | from autotest_lib.server import site_utils |
| 17 | from autotest_lib.server.cros.ap_configurators import ap_configurator |
| 18 | from autotest_lib.server.cros.ap_configurators import ap_cartridge |
| 19 | from autotest_lib.server.cros.ap_configurators import ap_spec as ap_spec_module |
| 20 | |
| 21 | |
| 22 | def allocate_packet_capturer(lock_manager, hostname): |
| 23 | """Allocates a machine to capture packets. |
| 24 | |
| 25 | Locks the allocated machine if the machine was discovered via AFE |
| 26 | to prevent tests stomping on each other. |
| 27 | |
| 28 | @param lock_manager HostLockManager object. |
| 29 | @param hostname string optional hostname of a packet capture machine. |
| 30 | |
| 31 | @return: An SSHHost object representing a locked packet_capture machine. |
| 32 | """ |
| 33 | if hostname is not None: |
| 34 | return hosts.SSHHost(hostname) |
| 35 | |
Tien Chang | 2199f07 | 2016-01-20 14:20:55 -0800 | [diff] [blame] | 36 | afe = frontend.AFE(debug=True, |
| 37 | server=site_utils.get_global_afe_hostname()) |
Roshan Pius | c6db3d0 | 2015-04-28 15:15:48 -0700 | [diff] [blame] | 38 | return hosts.SSHHost(site_utils.lock_host_with_labels( |
| 39 | afe, lock_manager, labels=['packet_capture']) + '.cros') |
| 40 | |
| 41 | |
Tien Chang | d2ae974 | 2015-06-03 20:26:26 -0700 | [diff] [blame] | 42 | def allocate_webdriver_instance(lock_manager): |
| 43 | """Allocates a machine to capture webdriver instance. |
| 44 | |
| 45 | Locks the allocated machine if the machine was discovered via AFE |
| 46 | to prevent tests stomping on each other. |
| 47 | |
| 48 | @param lock_manager HostLockManager object. |
| 49 | |
Tien Chang | a2581fb | 2016-05-06 15:10:09 -0700 | [diff] [blame^] | 50 | @return An SSHHost object representing a locked webdriver instance. |
Tien Chang | d2ae974 | 2015-06-03 20:26:26 -0700 | [diff] [blame] | 51 | """ |
Tien Chang | 2199f07 | 2016-01-20 14:20:55 -0800 | [diff] [blame] | 52 | afe = frontend.AFE(debug=True, |
| 53 | server=site_utils.get_global_afe_hostname()) |
Tien Chang | a2581fb | 2016-05-06 15:10:09 -0700 | [diff] [blame^] | 54 | webdriver_host = hosts.SSHHost(site_utils.lock_host_with_labels( |
| 55 | afe, lock_manager, labels=['webdriver'])) |
| 56 | if webdriver_host is not None: |
| 57 | return webdriver_host |
Tien Chang | d2ae974 | 2015-06-03 20:26:26 -0700 | [diff] [blame] | 58 | logging.error("Unable to allocate VM instance") |
| 59 | return None |
| 60 | |
| 61 | |
| 62 | def power_on_VM(master, instance): |
| 63 | """Power on VM |
| 64 | |
| 65 | @param master: chaosvmmaster SSHHost |
| 66 | @param instance: locked webdriver instance |
| 67 | |
| 68 | """ |
Tien Chang | a2581fb | 2016-05-06 15:10:09 -0700 | [diff] [blame^] | 69 | logging.debug('Powering on %s VM', instance.hostname) |
| 70 | power_on_cmd = 'VBoxManage startvm %s' % instance.hostname |
Tien Chang | d2ae974 | 2015-06-03 20:26:26 -0700 | [diff] [blame] | 71 | master.run(power_on_cmd) |
| 72 | |
| 73 | |
| 74 | def power_off_VM(master, instance): |
| 75 | """Power off VM |
| 76 | |
| 77 | @param master: chaosvmmaster SSHHost |
| 78 | @param instance: locked webdriver instance |
| 79 | |
| 80 | """ |
Tien Chang | a2581fb | 2016-05-06 15:10:09 -0700 | [diff] [blame^] | 81 | logging.debug('Powering off %s VM', instance.hostname) |
| 82 | power_off_cmd = 'VBoxManage controlvm %s poweroff' % instance.hostname |
Tien Chang | d2ae974 | 2015-06-03 20:26:26 -0700 | [diff] [blame] | 83 | master.run(power_off_cmd) |
| 84 | |
| 85 | |
Roshan Pius | c6db3d0 | 2015-04-28 15:15:48 -0700 | [diff] [blame] | 86 | def power_down_aps(aps, broken_pdus=[]): |
| 87 | """Powers down a list of aps. |
| 88 | |
| 89 | @param aps: a list of APConfigurator objects. |
| 90 | @param broken_pdus: a list of broken PDUs identified. |
| 91 | """ |
| 92 | cartridge = ap_cartridge.APCartridge() |
| 93 | for ap in aps: |
| 94 | ap.power_down_router() |
| 95 | cartridge.push_configurator(ap) |
| 96 | cartridge.run_configurators(broken_pdus) |
| 97 | |
| 98 | |
| 99 | def configure_aps(aps, ap_spec, broken_pdus=[]): |
| 100 | """Configures a given list of APs. |
| 101 | |
| 102 | @param aps: a list of APConfigurator objects. |
| 103 | @param ap_spec: APSpec object corresponding to the AP configuration. |
| 104 | @param broken_pdus: a list of broken PDUs identified. |
| 105 | """ |
| 106 | cartridge = ap_cartridge.APCartridge() |
| 107 | for ap in aps: |
| 108 | ap.set_using_ap_spec(ap_spec) |
| 109 | cartridge.push_configurator(ap) |
| 110 | cartridge.run_configurators(broken_pdus) |
| 111 | |
| 112 | |
| 113 | def is_dut_healthy(client, ap): |
| 114 | """Returns if iw scan is working properly. |
| 115 | |
| 116 | Sometimes iw scan will die, especially on the Atheros chips. |
| 117 | This works around that bug. See crbug.com/358716. |
| 118 | |
| 119 | @param client: a wifi_client for the DUT |
| 120 | @param ap: ap_configurator object |
| 121 | |
| 122 | @returns True if the DUT is healthy (iw scan works); False otherwise. |
| 123 | """ |
| 124 | # The SSID doesn't matter, all that needs to be verified is that iw |
| 125 | # works. |
| 126 | networks = client.iw_runner.wait_for_scan_result( |
Kris Rambish | 6b8a955 | 2015-06-09 11:02:59 -0700 | [diff] [blame] | 127 | client.wifi_if, ssids=[ap.ssid]) |
Roshan Pius | c6db3d0 | 2015-04-28 15:15:48 -0700 | [diff] [blame] | 128 | if networks == None: |
| 129 | return False |
| 130 | return True |
| 131 | |
| 132 | |
| 133 | def is_conn_worker_healthy(conn_worker, ap, assoc_params, job): |
| 134 | """Returns if the connection worker is working properly. |
| 135 | |
| 136 | From time to time the connection worker will fail to establish a |
| 137 | connection to the APs. |
| 138 | |
| 139 | @param conn_worker: conn_worker object |
| 140 | @param ap: an ap_configurator object |
| 141 | @param assoc_params: the connection association parameters |
| 142 | @param job: the Autotest job object |
| 143 | |
| 144 | @returns True if the worker is healthy; False otherwise |
| 145 | """ |
| 146 | if conn_worker is None: |
| 147 | return True |
| 148 | conn_status = conn_worker.connect_work_client(assoc_params) |
| 149 | if not conn_status: |
| 150 | job.run_test('network_WiFi_ChaosConfigFailure', ap=ap, |
| 151 | error_string=ap_constants.WORK_CLI_CONNECT_FAIL, |
| 152 | tag=ap.ssid) |
| 153 | # Obtain the logs from the worker |
| 154 | log_dir_name = str('worker_client_logs_%s' % ap.ssid) |
| 155 | log_dir = os.path.join(job.resultdir, log_dir_name) |
| 156 | conn_worker.host.collect_logs( |
| 157 | '/var/log', log_dir, ignore_errors=True) |
| 158 | return False |
| 159 | return True |
| 160 | |
| 161 | |
| 162 | def release_ap(ap, batch_locker, broken_pdus=[]): |
| 163 | """Powers down and unlocks the given AP. |
| 164 | |
| 165 | @param ap: the APConfigurator under test. |
| 166 | @param batch_locker: the batch locker object. |
| 167 | @param broken_pdus: a list of broken PDUs identified. |
| 168 | """ |
| 169 | ap.power_down_router() |
| 170 | try: |
| 171 | ap.apply_settings() |
| 172 | except ap_configurator.PduNotResponding as e: |
| 173 | if ap.pdu not in broken_pdus: |
| 174 | broken_pdus.append(ap.pdu) |
| 175 | batch_locker.unlock_one_ap(ap.host_name) |
| 176 | |
| 177 | |
| 178 | def filter_quarantined_and_config_failed_aps(aps, batch_locker, job, |
| 179 | broken_pdus=[]): |
| 180 | """Filter out all PDU quarantined and config failed APs. |
| 181 | |
| 182 | @param aps: the list of ap_configurator objects to filter |
| 183 | @param batch_locker: the batch_locker object |
| 184 | @param job: an Autotest job object |
| 185 | @param broken_pdus: a list of broken PDUs identified. |
| 186 | |
| 187 | @returns a list of ap_configuration objects. |
| 188 | """ |
| 189 | aps_to_remove = list() |
| 190 | for ap in aps: |
| 191 | failed_ap = False |
| 192 | if ap.pdu in broken_pdus: |
| 193 | ap.configuration_success = ap_constants.PDU_FAIL |
| 194 | if (ap.configuration_success == ap_constants.PDU_FAIL): |
| 195 | failed_ap = True |
| 196 | error_string = ap_constants.AP_PDU_DOWN |
| 197 | tag = ap.host_name + '_PDU' |
| 198 | elif (ap.configuration_success == ap_constants.CONFIG_FAIL): |
| 199 | failed_ap = True |
| 200 | error_string = ap_constants.AP_CONFIG_FAIL |
| 201 | tag = ap.host_name |
| 202 | if failed_ap: |
| 203 | tag += '_' + str(int(round(time.time()))) |
| 204 | job.run_test('network_WiFi_ChaosConfigFailure', |
| 205 | ap=ap, |
| 206 | error_string=error_string, |
| 207 | tag=tag) |
| 208 | aps_to_remove.append(ap) |
| 209 | if error_string == ap_constants.AP_CONFIG_FAIL: |
| 210 | release_ap(ap, batch_locker, broken_pdus) |
| 211 | else: |
| 212 | # Cannot use _release_ap, since power_down will fail |
| 213 | batch_locker.unlock_one_ap(ap.host_name) |
| 214 | return list(set(aps) - set(aps_to_remove)) |
| 215 | |
| 216 | |
| 217 | def get_security_from_scan(ap, networks, job): |
| 218 | """Returns a list of securities determined from the scan result. |
| 219 | |
| 220 | @param ap: the APConfigurator being testing against. |
| 221 | @param networks: List of matching networks returned from scan. |
| 222 | @param job: an Autotest job object |
| 223 | |
| 224 | @returns a list of possible securities for the given network. |
| 225 | """ |
| 226 | securities = list() |
| 227 | # Sanitize MIXED security setting for both Static and Dynamic |
| 228 | # configurators before doing the comparison. |
| 229 | security = networks[0].security |
| 230 | if (security == iw_runner.SECURITY_MIXED and |
| 231 | ap.configurator_type == ap_spec_module.CONFIGURATOR_STATIC): |
| 232 | securities = [iw_runner.SECURITY_WPA, iw_runner.SECURITY_WPA2] |
| 233 | # We have only seen WPA2 be backwards compatible, and we want |
| 234 | # to verify the configurator did the right thing. So we |
| 235 | # promote this to WPA2 only. |
| 236 | elif (security == iw_runner.SECURITY_MIXED and |
| 237 | ap.configurator_type == ap_spec_module.CONFIGURATOR_DYNAMIC): |
| 238 | securities = [iw_runner.SECURITY_WPA2] |
| 239 | else: |
| 240 | securities = [security] |
| 241 | return securities |
| 242 | |
| 243 | |
| 244 | def scan_for_networks(ssid, capturer, ap_spec): |
| 245 | """Returns a list of matching networks after running iw scan. |
| 246 | |
| 247 | @param ssid: the SSID string to look for in scan. |
| 248 | @param capturer: a packet capture device. |
| 249 | @param ap_spec: APSpec object corresponding to the AP configuration. |
| 250 | |
| 251 | @returns a list of the matching networks; if no networks are found at |
| 252 | all, returns None. |
| 253 | """ |
| 254 | # Setup a managed interface to perform scanning on the |
| 255 | # packet capture device. |
| 256 | freq = ap_spec_module.FREQUENCY_TABLE[ap_spec.channel] |
| 257 | wifi_if = capturer.get_wlanif(freq, 'managed') |
| 258 | capturer.host.run('%s link set %s up' % (capturer.cmd_ip, wifi_if)) |
| 259 | # We have some APs that need a while to come on-line |
| 260 | networks = capturer.iw_runner.wait_for_scan_result( |
Kris Rambish | 6b8a955 | 2015-06-09 11:02:59 -0700 | [diff] [blame] | 261 | wifi_if, ssids=[ssid], timeout_seconds=300) |
Roshan Pius | c6db3d0 | 2015-04-28 15:15:48 -0700 | [diff] [blame] | 262 | capturer.remove_interface(wifi_if) |
| 263 | return networks |
| 264 | |
| 265 | |
| 266 | def return_available_networks(ap, capturer, job, ap_spec): |
| 267 | """Returns a list of networks configured as described by an APSpec. |
| 268 | |
| 269 | @param ap: the APConfigurator being testing against. |
| 270 | @param capturer: a packet capture device |
| 271 | @param job: an Autotest job object. |
| 272 | @param ap_spec: APSpec object corresponding to the AP configuration. |
| 273 | |
| 274 | @returns a list of networks returned from _scan_for_networks(). |
| 275 | """ |
| 276 | for i in range(2): |
| 277 | networks = scan_for_networks(ap.ssid, capturer, ap_spec) |
| 278 | if networks is None: |
| 279 | return None |
| 280 | if len(networks) == 0: |
| 281 | # The SSID wasn't even found, abort |
| 282 | logging.error('The ssid %s was not found in the scan', ap.ssid) |
| 283 | job.run_test('network_WiFi_ChaosConfigFailure', ap=ap, |
| 284 | error_string=ap_constants.AP_SSID_NOTFOUND, |
| 285 | tag=ap.ssid) |
| 286 | return list() |
| 287 | security = get_security_from_scan(ap, networks, job) |
| 288 | if ap_spec.security in security: |
| 289 | return networks |
| 290 | if i == 0: |
| 291 | # The SSID exists but the security is wrong, give the AP time |
| 292 | # to possible update it. |
| 293 | time.sleep(60) |
| 294 | if ap_spec.security not in security: |
| 295 | logging.error('%s was the expected security but got %s: %s', |
| 296 | ap_spec.security, |
| 297 | str(security).strip('[]'), |
| 298 | networks) |
| 299 | job.run_test('network_WiFi_ChaosConfigFailure', |
| 300 | ap=ap, |
| 301 | error_string=ap_constants.AP_SECURITY_MISMATCH, |
| 302 | tag=ap.ssid) |
| 303 | networks = list() |
| 304 | return networks |
| 305 | |
| 306 | |
| 307 | def sanitize_client(host): |
| 308 | """Clean up logs and reboot the DUT. |
| 309 | |
| 310 | @param host: the cros host object to use for RPC calls. |
| 311 | """ |
| 312 | host.run('rm -rf /var/log') |
| 313 | host.reboot() |
| 314 | |
| 315 | |
| 316 | def get_firmware_ver(host): |
| 317 | """Get firmware version of DUT from /var/log/messages. |
| 318 | |
| 319 | WiFi firmware version is matched against list of known firmware versions |
| 320 | from ToT. |
| 321 | |
| 322 | @param host: the cros host object to use for RPC calls. |
| 323 | |
| 324 | @returns the WiFi firmware version as a string, None if the version |
| 325 | cannot be found. |
| 326 | """ |
Roshan Pius | 10b27ca | 2015-12-01 14:01:23 -0800 | [diff] [blame] | 327 | # TODO(rpius): Need to find someway to get this info for Android/Brillo. |
| 328 | if host.get_os_type() != 'cros': |
| 329 | return None |
| 330 | |
Roshan Pius | c6db3d0 | 2015-04-28 15:15:48 -0700 | [diff] [blame] | 331 | # Firmware versions manually aggregated by installing ToT on each device |
| 332 | known_firmware_ver = ['Atheros', 'mwifiex', 'loaded firmware version', |
| 333 | 'brcmf_c_preinit_dcmds'] |
| 334 | # Find and return firmware version in logs |
| 335 | for firmware_ver in known_firmware_ver: |
| 336 | result_str = host.run( |
| 337 | 'awk "/%s/ {print}" /var/log/messages' % firmware_ver).stdout |
| 338 | if not result_str: |
| 339 | continue |
| 340 | else: |
| 341 | if 'Atheros' in result_str: |
| 342 | pattern = '%s \w+ Rev:\d' % firmware_ver |
| 343 | elif 'mwifiex' in result_str: |
| 344 | pattern = '%s [\d.]+ \([\w.]+\)' % firmware_ver |
| 345 | elif 'loaded firmware version' in result_str: |
Tien Chang | a50d88d | 2016-01-11 15:54:44 -0800 | [diff] [blame] | 346 | pattern = '(\d+\.\d+\.\d+)' |
Roshan Pius | c6db3d0 | 2015-04-28 15:15:48 -0700 | [diff] [blame] | 347 | elif 'Firmware version' in result_str: |
| 348 | pattern = '\d+\.\d+\.\d+ \([\w.]+\)' |
| 349 | else: |
| 350 | logging.info('%s does not match known firmware versions.', |
| 351 | result_str) |
| 352 | return None |
| 353 | result = re.search(pattern, result_str) |
| 354 | if result: |
| 355 | return result.group(0) |
| 356 | return None |
Bindu Mahadev | 36d9e6e | 2016-03-28 16:34:40 -0700 | [diff] [blame] | 357 | |
| 358 | |
| 359 | def collect_pcap_info(tracedir, pcap_filename, try_count): |
| 360 | """Gather .trc and .trc.log files into android debug directory. |
| 361 | |
| 362 | @param tracedir: string name of the directory that has the trace files. |
| 363 | @param pcap_filename: string name of the pcap file. |
| 364 | @param try_count: int Connection attempt number. |
| 365 | |
| 366 | """ |
| 367 | pcap_file = os.path.join(tracedir, pcap_filename) |
| 368 | pcap_log_file = os.path.join(tracedir, '%s.log' % pcap_filename) |
| 369 | debug_dir = 'android_debug_try_%d' % try_count |
| 370 | debug_dir_path = os.path.join(tracedir, 'debug/%s' % debug_dir) |
| 371 | if os.path.exists(debug_dir_path): |
| 372 | pcap_dir_path = os.path.join(debug_dir_path, 'pcap') |
| 373 | if not os.path.exists(pcap_dir_path): |
| 374 | os.makedirs(pcap_dir_path) |
| 375 | shutil.copy(pcap_file, pcap_dir_path) |
| 376 | shutil.copy(pcap_log_file, pcap_dir_path) |
| 377 | logging.debug('Copied failed packet capture data to directory') |