WifiConfigStore.java revision 84649ea634d480be6bee19f155a1da5a4ec93e60
1/* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server.wifi; 18 19import android.app.AppGlobals; 20import android.app.admin.DeviceAdminInfo; 21import android.app.admin.DevicePolicyManagerInternal; 22import android.content.ContentResolver; 23import android.content.Context; 24import android.content.Intent; 25import android.content.pm.ApplicationInfo; 26import android.content.pm.PackageManager; 27import android.net.IpConfiguration; 28import android.net.IpConfiguration.IpAssignment; 29import android.net.IpConfiguration.ProxySettings; 30import android.net.NetworkInfo.DetailedState; 31import android.net.ProxyInfo; 32import android.net.StaticIpConfiguration; 33import android.net.wifi.ScanResult; 34import android.net.wifi.WifiConfiguration; 35import android.net.wifi.WifiConfiguration.KeyMgmt; 36import android.net.wifi.WifiConfiguration.Status; 37import android.net.wifi.WifiEnterpriseConfig; 38import android.net.wifi.WifiInfo; 39import android.net.wifi.WifiManager; 40import android.net.wifi.WifiSsid; 41import android.net.wifi.WpsInfo; 42import android.net.wifi.WpsResult; 43import android.os.Environment; 44import android.os.FileObserver; 45import android.os.Process; 46import android.os.RemoteException; 47import android.os.SystemClock; 48import android.os.UserHandle; 49import android.provider.Settings; 50import android.security.Credentials; 51import android.security.KeyChain; 52import android.security.KeyStore; 53import android.text.TextUtils; 54import android.util.LocalLog; 55import android.util.Log; 56import android.util.SparseArray; 57 58import com.android.server.LocalServices; 59import com.android.internal.R; 60import com.android.server.net.DelayedDiskWrite; 61import com.android.server.net.IpConfigStore; 62import com.android.server.wifi.anqp.ANQPElement; 63import com.android.server.wifi.anqp.Constants; 64import com.android.server.wifi.hotspot2.ANQPData; 65import com.android.server.wifi.hotspot2.AnqpCache; 66import com.android.server.wifi.hotspot2.NetworkDetail; 67import com.android.server.wifi.hotspot2.PasspointMatch; 68import com.android.server.wifi.hotspot2.SupplicantBridge; 69import com.android.server.wifi.hotspot2.Utils; 70import com.android.server.wifi.hotspot2.omadm.MOManager; 71import com.android.server.wifi.hotspot2.pps.Credential; 72import com.android.server.wifi.hotspot2.pps.HomeSP; 73 74import java.io.BufferedInputStream; 75import java.io.BufferedReader; 76import java.io.DataInputStream; 77import java.io.DataOutputStream; 78import java.io.EOFException; 79import java.io.File; 80import java.io.FileDescriptor; 81import java.io.FileInputStream; 82import java.io.FileNotFoundException; 83import java.io.FileReader; 84import java.io.IOException; 85import java.io.PrintWriter; 86import java.nio.charset.StandardCharsets; 87import java.security.PrivateKey; 88import java.security.cert.Certificate; 89import java.security.cert.CertificateException; 90import java.util.ArrayList; 91import java.util.BitSet; 92import java.util.Calendar; 93import java.util.Collection; 94import java.util.Collections; 95import java.util.Comparator; 96import java.util.HashMap; 97import java.util.HashSet; 98import java.util.List; 99import java.util.Map; 100import java.util.Objects; 101import java.util.Set; 102import java.util.concurrent.atomic.AtomicBoolean; 103import java.util.concurrent.atomic.AtomicInteger; 104import java.util.regex.Matcher; 105import java.util.regex.Pattern; 106import java.util.zip.CRC32; 107import java.util.zip.Checksum; 108 109import static android.net.wifi.WifiConfiguration.INVALID_NETWORK_ID; 110 111 112/** 113 * This class provides the API to manage configured 114 * wifi networks. The API is not thread safe is being 115 * used only from WifiStateMachine. 116 * 117 * It deals with the following 118 * - Add/update/remove a WifiConfiguration 119 * The configuration contains two types of information. 120 * = IP and proxy configuration that is handled by WifiConfigStore and 121 * is saved to disk on any change. 122 * 123 * The format of configuration file is as follows: 124 * <version> 125 * <netA_key1><netA_value1><netA_key2><netA_value2>...<EOS> 126 * <netB_key1><netB_value1><netB_key2><netB_value2>...<EOS> 127 * .. 128 * 129 * (key, value) pairs for a given network are grouped together and can 130 * be in any order. A EOS at the end of a set of (key, value) pairs 131 * indicates that the next set of (key, value) pairs are for a new 132 * network. A network is identified by a unique ID_KEY. If there is no 133 * ID_KEY in the (key, value) pairs, the data is discarded. 134 * 135 * An invalid version on read would result in discarding the contents of 136 * the file. On the next write, the latest version is written to file. 137 * 138 * Any failures during read or write to the configuration file are ignored 139 * without reporting to the user since the likelihood of these errors are 140 * low and the impact on connectivity is low. 141 * 142 * = SSID & security details that is pushed to the supplicant. 143 * supplicant saves these details to the disk on calling 144 * saveConfigCommand(). 145 * 146 * We have two kinds of APIs exposed: 147 * > public API calls that provide fine grained control 148 * - enableNetwork, disableNetwork, addOrUpdateNetwork(), 149 * removeNetwork(). For these calls, the config is not persisted 150 * to the disk. (TODO: deprecate these calls in WifiManager) 151 * > The new API calls - selectNetwork(), saveNetwork() & forgetNetwork(). 152 * These calls persist the supplicant config to disk. 153 * 154 * - Maintain a list of configured networks for quick access 155 * 156 */ 157public class WifiConfigStore extends IpConfigStore { 158 159 private Context mContext; 160 public static final String TAG = "WifiConfigStore"; 161 private static final boolean DBG = true; 162 private static boolean VDBG = false; 163 private static boolean VVDBG = false; 164 165 private static final String SUPPLICANT_CONFIG_FILE = "/data/misc/wifi/wpa_supplicant.conf"; 166 private static final String SUPPLICANT_CONFIG_FILE_BACKUP = SUPPLICANT_CONFIG_FILE + ".tmp"; 167 private static final String PPS_FILE = "/data/misc/wifi/PerProviderSubscription.conf"; 168 169 /* configured networks with network id as the key */ 170 private final ConfigurationMap mConfiguredNetworks = new ConfigurationMap(); 171 172 /* A network id is a unique identifier for a network configured in the 173 * supplicant. Network ids are generated when the supplicant reads 174 * the configuration file at start and can thus change for networks. 175 * We store the IP configuration for networks along with a unique id 176 * that is generated from SSID and security type of the network. A mapping 177 * from the generated unique id to network id of the network is needed to 178 * map supplicant config to IP configuration. */ 179 180 /* Stores a map of NetworkId to ScanCache */ 181 private HashMap<Integer, ScanDetailCache> mScanDetailCaches; 182 183 /** 184 * Framework keeps a list of (the CRC32 hashes of) all SSIDs that where deleted by user, 185 * so as, framework knows not to re-add those SSIDs automatically to the Saved networks 186 */ 187 private Set<Long> mDeletedSSIDs = new HashSet<Long>(); 188 189 /** 190 * Framework keeps a list of ephemeral SSIDs that where deleted by user, 191 * so as, framework knows not to autojoin again those SSIDs based on scorer input. 192 * The list is never cleared up. 193 * 194 * The SSIDs are encoded in a String as per definition of WifiConfiguration.SSID field. 195 */ 196 public Set<String> mDeletedEphemeralSSIDs = new HashSet<String>(); 197 198 /* Tracks the highest priority of configured networks */ 199 private int mLastPriority = -1; 200 201 private static final String ipConfigFile = Environment.getDataDirectory() + 202 "/misc/wifi/ipconfig.txt"; 203 204 private static final String networkHistoryConfigFile = Environment.getDataDirectory() + 205 "/misc/wifi/networkHistory.txt"; 206 207 private static final String autoJoinConfigFile = Environment.getDataDirectory() + 208 "/misc/wifi/autojoinconfig.txt"; 209 210 /* Network History Keys */ 211 private static final String SSID_KEY = "SSID"; 212 private static final String CONFIG_KEY = "CONFIG"; 213 private static final String CHOICE_KEY = "CHOICE"; 214 private static final String LINK_KEY = "LINK"; 215 private static final String BSSID_KEY = "BSSID"; 216 private static final String BSSID_KEY_END = "/BSSID"; 217 private static final String RSSI_KEY = "RSSI"; 218 private static final String FREQ_KEY = "FREQ"; 219 private static final String DATE_KEY = "DATE"; 220 private static final String MILLI_KEY = "MILLI"; 221 private static final String BLACKLIST_MILLI_KEY = "BLACKLIST_MILLI"; 222 private static final String NETWORK_ID_KEY = "ID"; 223 private static final String PRIORITY_KEY = "PRIORITY"; 224 private static final String DEFAULT_GW_KEY = "DEFAULT_GW"; 225 private static final String AUTH_KEY = "AUTH"; 226 private static final String STATUS_KEY = "AUTO_JOIN_STATUS"; 227 private static final String BSSID_STATUS_KEY = "BSSID_STATUS"; 228 private static final String SELF_ADDED_KEY = "SELF_ADDED"; 229 private static final String FAILURE_KEY = "FAILURE"; 230 private static final String DID_SELF_ADD_KEY = "DID_SELF_ADD"; 231 private static final String PEER_CONFIGURATION_KEY = "PEER_CONFIGURATION"; 232 private static final String CREATOR_UID_KEY = "CREATOR_UID_KEY"; 233 private static final String CONNECT_UID_KEY = "CONNECT_UID_KEY"; 234 private static final String UPDATE_UID_KEY = "UPDATE_UID"; 235 private static final String SUPPLICANT_STATUS_KEY = "SUP_STATUS"; 236 private static final String SUPPLICANT_DISABLE_REASON_KEY = "SUP_DIS_REASON"; 237 private static final String FQDN_KEY = "FQDN"; 238 private static final String NUM_CONNECTION_FAILURES_KEY = "CONNECT_FAILURES"; 239 private static final String NUM_IP_CONFIG_FAILURES_KEY = "IP_CONFIG_FAILURES"; 240 private static final String NUM_AUTH_FAILURES_KEY = "AUTH_FAILURES"; 241 private static final String SCORER_OVERRIDE_KEY = "SCORER_OVERRIDE"; 242 private static final String SCORER_OVERRIDE_AND_SWITCH_KEY = "SCORER_OVERRIDE_AND_SWITCH"; 243 private static final String VALIDATED_INTERNET_ACCESS_KEY = "VALIDATED_INTERNET_ACCESS"; 244 private static final String NO_INTERNET_ACCESS_REPORTS_KEY = "NO_INTERNET_ACCESS_REPORTS"; 245 private static final String EPHEMERAL_KEY = "EPHEMERAL"; 246 private static final String NUM_ASSOCIATION_KEY = "NUM_ASSOCIATION"; 247 private static final String DELETED_CRC32_KEY = "DELETED_CRC32"; 248 private static final String DELETED_EPHEMERAL_KEY = "DELETED_EPHEMERAL"; 249 private static final String JOIN_ATTEMPT_BOOST_KEY = "JOIN_ATTEMPT_BOOST"; 250 private static final String CREATOR_NAME_KEY = "CREATOR_NAME"; 251 private static final String UPDATE_NAME_KEY = "UPDATE_NAME"; 252 private static final String USER_APPROVED_KEY = "USER_APPROVED"; 253 private static final String CREATION_TIME_KEY = "CREATION_TIME"; 254 private static final String UPDATE_TIME_KEY = "UPDATE_TIME"; 255 256 private static final String SEPARATOR = ": "; 257 private static final String NL = "\n"; 258 259 private static final String THRESHOLD_INITIAL_AUTO_JOIN_ATTEMPT_RSSI_MIN_5G_KEY 260 = "THRESHOLD_INITIAL_AUTO_JOIN_ATTEMPT_RSSI_MIN_5G"; 261 private static final String THRESHOLD_INITIAL_AUTO_JOIN_ATTEMPT_RSSI_MIN_24G_KEY 262 = "THRESHOLD_INITIAL_AUTO_JOIN_ATTEMPT_RSSI_MIN_24G"; 263 private static final String THRESHOLD_UNBLACKLIST_HARD_5G_KEY 264 = "THRESHOLD_UNBLACKLIST_HARD_5G"; 265 private static final String THRESHOLD_UNBLACKLIST_SOFT_5G_KEY 266 = "THRESHOLD_UNBLACKLIST_SOFT_5G"; 267 private static final String THRESHOLD_UNBLACKLIST_HARD_24G_KEY 268 = "THRESHOLD_UNBLACKLIST_HARD_24G"; 269 private static final String THRESHOLD_UNBLACKLIST_SOFT_24G_KEY 270 = "THRESHOLD_UNBLACKLIST_SOFT_24G"; 271 private static final String THRESHOLD_GOOD_RSSI_5_KEY 272 = "THRESHOLD_GOOD_RSSI_5"; 273 private static final String THRESHOLD_LOW_RSSI_5_KEY 274 = "THRESHOLD_LOW_RSSI_5"; 275 private static final String THRESHOLD_BAD_RSSI_5_KEY 276 = "THRESHOLD_BAD_RSSI_5"; 277 private static final String THRESHOLD_GOOD_RSSI_24_KEY 278 = "THRESHOLD_GOOD_RSSI_24"; 279 private static final String THRESHOLD_LOW_RSSI_24_KEY 280 = "THRESHOLD_LOW_RSSI_24"; 281 private static final String THRESHOLD_BAD_RSSI_24_KEY 282 = "THRESHOLD_BAD_RSSI_24"; 283 284 private static final String THRESHOLD_MAX_TX_PACKETS_FOR_NETWORK_SWITCHING_KEY 285 = "THRESHOLD_MAX_TX_PACKETS_FOR_NETWORK_SWITCHING"; 286 private static final String THRESHOLD_MAX_RX_PACKETS_FOR_NETWORK_SWITCHING_KEY 287 = "THRESHOLD_MAX_RX_PACKETS_FOR_NETWORK_SWITCHING"; 288 289 private static final String THRESHOLD_MAX_TX_PACKETS_FOR_FULL_SCANS_KEY 290 = "THRESHOLD_MAX_TX_PACKETS_FOR_FULL_SCANS"; 291 private static final String THRESHOLD_MAX_RX_PACKETS_FOR_FULL_SCANS_KEY 292 = "THRESHOLD_MAX_RX_PACKETS_FOR_FULL_SCANS"; 293 294 private static final String THRESHOLD_MAX_TX_PACKETS_FOR_PARTIAL_SCANS_KEY 295 = "THRESHOLD_MAX_TX_PACKETS_FOR_PARTIAL_SCANS"; 296 private static final String THRESHOLD_MAX_RX_PACKETS_FOR_PARTIAL_SCANS_KEY 297 = "THRESHOLD_MAX_RX_PACKETS_FOR_PARTIAL_SCANS"; 298 299 private static final String MAX_NUM_ACTIVE_CHANNELS_FOR_PARTIAL_SCANS_KEY 300 = "MAX_NUM_ACTIVE_CHANNELS_FOR_PARTIAL_SCANS"; 301 private static final String MAX_NUM_PASSIVE_CHANNELS_FOR_PARTIAL_SCANS_KEY 302 = "MAX_NUM_PASSIVE_CHANNELS_FOR_PARTIAL_SCANS"; 303 304 private static final String A_BAND_PREFERENCE_RSSI_THRESHOLD_LOW_KEY = 305 "A_BAND_PREFERENCE_RSSI_THRESHOLD_LOW"; 306 private static final String A_BAND_PREFERENCE_RSSI_THRESHOLD_KEY = 307 "A_BAND_PREFERENCE_RSSI_THRESHOLD"; 308 private static final String G_BAND_PREFERENCE_RSSI_THRESHOLD_KEY = 309 "G_BAND_PREFERENCE_RSSI_THRESHOLD"; 310 311 private static final String ENABLE_AUTOJOIN_WHILE_ASSOCIATED_KEY 312 = "ENABLE_AUTOJOIN_WHILE_ASSOCIATED: "; 313 314 private static final String ASSOCIATED_PARTIAL_SCAN_PERIOD_KEY 315 = "ASSOCIATED_PARTIAL_SCAN_PERIOD"; 316 private static final String ASSOCIATED_FULL_SCAN_BACKOFF_KEY 317 = "ASSOCIATED_FULL_SCAN_BACKOFF_PERIOD"; 318 private static final String ALWAYS_ENABLE_SCAN_WHILE_ASSOCIATED_KEY 319 = "ALWAYS_ENABLE_SCAN_WHILE_ASSOCIATED"; 320 private static final String ONLY_LINK_SAME_CREDENTIAL_CONFIGURATIONS_KEY 321 = "ONLY_LINK_SAME_CREDENTIAL_CONFIGURATIONS"; 322 323 private static final String ENABLE_FULL_BAND_SCAN_WHEN_ASSOCIATED_KEY 324 = "ENABLE_FULL_BAND_SCAN_WHEN_ASSOCIATED"; 325 326 private static final String ENABLE_HAL_BASED_PNO 327 = "ENABLE_HAL_BASED_PNO"; 328 329 // The three below configurations are mainly for power stats and CPU usage tracking 330 // allowing to incrementally disable framework features 331 private static final String ENABLE_AUTO_JOIN_SCAN_WHILE_ASSOCIATED_KEY 332 = "ENABLE_AUTO_JOIN_SCAN_WHILE_ASSOCIATED"; 333 private static final String ENABLE_AUTO_JOIN_WHILE_ASSOCIATED_KEY 334 = "ENABLE_AUTO_JOIN_WHILE_ASSOCIATED"; 335 private static final String ENABLE_CHIP_WAKE_UP_WHILE_ASSOCIATED_KEY 336 = "ENABLE_CHIP_WAKE_UP_WHILE_ASSOCIATED"; 337 private static final String ENABLE_RSSI_POLL_WHILE_ASSOCIATED_KEY 338 = "ENABLE_RSSI_POLL_WHILE_ASSOCIATED_KEY"; 339 340 public static final String idStringVarName = "id_str"; 341 342 // The Wifi verbose log is provided as a way to persist the verbose logging settings 343 // for testing purpose. 344 // It is not intended for normal use. 345 private static final String WIFI_VERBOSE_LOGS_KEY 346 = "WIFI_VERBOSE_LOGS"; 347 348 // As we keep deleted PSK WifiConfiguration for a while, the PSK of 349 // those deleted WifiConfiguration is set to this random unused PSK 350 private static final String DELETED_CONFIG_PSK = "Mjkd86jEMGn79KhKll298Uu7-deleted"; 351 352 public int maxTxPacketForFullScans = 8; 353 public int maxRxPacketForFullScans = 16; 354 355 public int maxTxPacketForPartialScans = 40; 356 public int maxRxPacketForPartialScans = 80; 357 358 public int associatedFullScanMaxIntervalMilli = 300000; 359 360 // Sane value for roam blacklisting (not switching to a network if already associated) 361 // 2 days 362 public int networkSwitchingBlackListPeriodMilli = 2 * 24 * 60 * 60 * 1000; 363 364 public int bandPreferenceBoostFactor5 = 5; // Boost by 5 dB per dB above threshold 365 public int bandPreferencePenaltyFactor5 = 2; // Penalize by 2 dB per dB below threshold 366 367 public int badLinkSpeed24 = 6; 368 public int badLinkSpeed5 = 12; 369 public int goodLinkSpeed24 = 24; 370 public int goodLinkSpeed5 = 36; 371 372 public int maxAuthErrorsToBlacklist = 4; 373 public int maxConnectionErrorsToBlacklist = 4; 374 public int wifiConfigBlacklistMinTimeMilli = 1000 * 60 * 5; 375 376 // How long a disconnected config remain considered as the last user selection 377 public int wifiConfigLastSelectionHysteresis = 1000 * 60 * 3; 378 379 // Boost RSSI values of associated networks 380 public int associatedHysteresisHigh = +14; 381 public int associatedHysteresisLow = +8; 382 383 boolean showNetworks = true; // TODO set this back to false, used for debugging 17516271 384 385 public boolean roamOnAny = false; 386 public boolean onlyLinkSameCredentialConfigurations = true; 387 388 public boolean enableLinkDebouncing = true; 389 public boolean enable5GHzPreference = true; 390 public boolean enableWifiCellularHandoverUserTriggeredAdjustment = true; 391 392 public int currentNetworkBoost = 25; 393 public int scanResultRssiLevelPatchUp = -85; 394 395 public static final int maxNumScanCacheEntries = 128; 396 397 public final AtomicBoolean enableHalBasedPno = new AtomicBoolean(true); 398 public final AtomicBoolean enableSsidWhitelist = new AtomicBoolean(true); 399 public final AtomicBoolean enableAutoJoinWhenAssociated = new AtomicBoolean(true); 400 public final AtomicBoolean enableFullBandScanWhenAssociated = new AtomicBoolean(true); 401 public final AtomicBoolean enableAutoJoinScanWhenAssociated = new AtomicBoolean(true); 402 public final AtomicBoolean enableChipWakeUpWhenAssociated = new AtomicBoolean(true); 403 public final AtomicBoolean enableRssiPollWhenAssociated = new AtomicBoolean(true); 404 public final AtomicInteger thresholdInitialAutoJoinAttemptMin5RSSI = 405 new AtomicInteger(WifiConfiguration.INITIAL_AUTO_JOIN_ATTEMPT_MIN_5); 406 public final AtomicInteger thresholdInitialAutoJoinAttemptMin24RSSI = 407 new AtomicInteger(WifiConfiguration.INITIAL_AUTO_JOIN_ATTEMPT_MIN_24); 408 public final AtomicInteger thresholdUnblacklistThreshold5Hard 409 = new AtomicInteger(WifiConfiguration.UNBLACKLIST_THRESHOLD_5_HARD); 410 public final AtomicInteger thresholdUnblacklistThreshold5Soft 411 = new AtomicInteger(WifiConfiguration.UNBLACKLIST_THRESHOLD_5_SOFT); 412 public final AtomicInteger thresholdUnblacklistThreshold24Hard 413 = new AtomicInteger(WifiConfiguration.UNBLACKLIST_THRESHOLD_24_HARD); 414 public final AtomicInteger thresholdUnblacklistThreshold24Soft 415 = new AtomicInteger(WifiConfiguration.UNBLACKLIST_THRESHOLD_24_SOFT); 416 public final AtomicInteger thresholdGoodRssi5 = 417 new AtomicInteger(WifiConfiguration.GOOD_RSSI_5); 418 public final AtomicInteger thresholdLowRssi5 = new AtomicInteger(WifiConfiguration.LOW_RSSI_5); 419 public final AtomicInteger thresholdBadRssi5 = new AtomicInteger(WifiConfiguration.BAD_RSSI_5); 420 public final AtomicInteger thresholdGoodRssi24 = 421 new AtomicInteger(WifiConfiguration.GOOD_RSSI_24); 422 public final AtomicInteger thresholdLowRssi24 = new AtomicInteger(WifiConfiguration.LOW_RSSI_24); 423 public final AtomicInteger thresholdBadRssi24 = new AtomicInteger(WifiConfiguration.BAD_RSSI_24); 424 public final AtomicInteger maxTxPacketForNetworkSwitching = new AtomicInteger(40); 425 public final AtomicInteger maxRxPacketForNetworkSwitching = new AtomicInteger(80); 426 public final AtomicInteger enableVerboseLogging = new AtomicInteger(0); 427 public final AtomicInteger bandPreferenceBoostThreshold5 = 428 new AtomicInteger(WifiConfiguration.A_BAND_PREFERENCE_RSSI_THRESHOLD); 429 public final AtomicInteger associatedFullScanBackoff = 430 new AtomicInteger(12); // Will be divided by 8 by WifiStateMachine 431 public final AtomicInteger bandPreferencePenaltyThreshold5 = 432 new AtomicInteger(WifiConfiguration.G_BAND_PREFERENCE_RSSI_THRESHOLD); 433 public final AtomicInteger alwaysEnableScansWhileAssociated = new AtomicInteger(0); 434 public final AtomicInteger maxNumPassiveChannelsForPartialScans = new AtomicInteger(2); 435 public final AtomicInteger maxNumActiveChannelsForPartialScans = new AtomicInteger(6); 436 public final AtomicInteger wifiDisconnectedShortScanIntervalMilli = new AtomicInteger(15000); 437 public final AtomicInteger wifiDisconnectedLongScanIntervalMilli = new AtomicInteger(120000); 438 public final AtomicInteger wifiAssociatedShortScanIntervalMilli = new AtomicInteger(20000); 439 public final AtomicInteger wifiAssociatedLongScanIntervalMilli = new AtomicInteger(180000); 440 441 private static final Map<String, Object> sKeyMap = new HashMap<>(); 442 443 /** 444 * Regex pattern for extracting a connect choice. 445 * Matches a strings like the following: 446 * <configKey>=([0:9]+) 447 */ 448 private static Pattern mConnectChoice = 449 Pattern.compile("(.*)=([0-9]+)"); 450 451 452 /* Enterprise configuration keys */ 453 /** 454 * In old configurations, the "private_key" field was used. However, newer 455 * configurations use the key_id field with the engine_id set to "keystore". 456 * If this field is found in the configuration, the migration code is 457 * triggered. 458 */ 459 public static final String OLD_PRIVATE_KEY_NAME = "private_key"; 460 461 /** 462 * This represents an empty value of an enterprise field. 463 * NULL is used at wpa_supplicant to indicate an empty value 464 */ 465 static final String EMPTY_VALUE = "NULL"; 466 467 // Internal use only 468 private static final String[] ENTERPRISE_CONFIG_SUPPLICANT_KEYS = new String[] { 469 WifiEnterpriseConfig.EAP_KEY, WifiEnterpriseConfig.PHASE2_KEY, 470 WifiEnterpriseConfig.IDENTITY_KEY, WifiEnterpriseConfig.ANON_IDENTITY_KEY, 471 WifiEnterpriseConfig.PASSWORD_KEY, WifiEnterpriseConfig.CLIENT_CERT_KEY, 472 WifiEnterpriseConfig.CA_CERT_KEY, WifiEnterpriseConfig.SUBJECT_MATCH_KEY, 473 WifiEnterpriseConfig.ENGINE_KEY, WifiEnterpriseConfig.ENGINE_ID_KEY, 474 WifiEnterpriseConfig.PRIVATE_KEY_ID_KEY, WifiEnterpriseConfig.ALTSUBJECT_MATCH_KEY, 475 WifiEnterpriseConfig.DOM_SUFFIX_MATCH_KEY 476 }; 477 478 479 /** 480 * If Connectivity Service has triggered an unwanted network disconnect 481 */ 482 public long lastUnwantedNetworkDisconnectTimestamp = 0; 483 484 /** 485 * The maximum number of times we will retry a connection to an access point 486 * for which we have failed in acquiring an IP address from DHCP. A value of 487 * N means that we will make N+1 connection attempts in all. 488 * <p> 489 * See {@link Settings.Secure#WIFI_MAX_DHCP_RETRY_COUNT}. This is the default 490 * value if a Settings value is not present. 491 */ 492 private static final int DEFAULT_MAX_DHCP_RETRIES = 9; 493 494 495 private final LocalLog mLocalLog; 496 private final WpaConfigFileObserver mFileObserver; 497 498 private WifiNative mWifiNative; 499 private final KeyStore mKeyStore = KeyStore.getInstance(); 500 501 /** 502 * The lastSelectedConfiguration is used to remember which network 503 * was selected last by the user. 504 * The connection to this network may not be successful, as well 505 * the selection (i.e. network priority) might not be persisted. 506 * WiFi state machine is the only object that sets this variable. 507 */ 508 private String lastSelectedConfiguration = null; 509 510 /** 511 * Cached PNO list, it is updated when WifiConfiguration changes due to user input. 512 */ 513 ArrayList<WifiNative.WifiPnoNetwork> mCachedPnoList 514 = new ArrayList<WifiNative.WifiPnoNetwork>(); 515 516 /* 517 * BSSID blacklist, i.e. list of BSSID we want to avoid 518 */ 519 HashSet<String> mBssidBlacklist = new HashSet<String>(); 520 521 /* 522 * Lost config list, whenever we read a config from networkHistory.txt that was not in 523 * wpa_supplicant.conf 524 */ 525 HashSet<String> mLostConfigsDbg = new HashSet<String>(); 526 527 private final AnqpCache mAnqpCache; 528 private final SupplicantBridge mSupplicantBridge; 529 private final MOManager mMOManager; 530 private final SIMAccessor mSIMAccessor; 531 532 private WifiStateMachine mWifiStateMachine; 533 534 WifiConfigStore(Context c, WifiStateMachine w, WifiNative wn) { 535 mContext = c; 536 mWifiNative = wn; 537 mWifiStateMachine = w; 538 539 // A map for value setting in readAutoJoinConfig() - replacing the replicated code. 540 sKeyMap.put(ENABLE_AUTO_JOIN_WHILE_ASSOCIATED_KEY, enableAutoJoinWhenAssociated); 541 sKeyMap.put(ENABLE_FULL_BAND_SCAN_WHEN_ASSOCIATED_KEY, enableFullBandScanWhenAssociated); 542 sKeyMap.put(ENABLE_AUTO_JOIN_SCAN_WHILE_ASSOCIATED_KEY, enableAutoJoinScanWhenAssociated); 543 sKeyMap.put(ENABLE_CHIP_WAKE_UP_WHILE_ASSOCIATED_KEY, enableChipWakeUpWhenAssociated); 544 sKeyMap.put(ENABLE_RSSI_POLL_WHILE_ASSOCIATED_KEY, enableRssiPollWhenAssociated); 545 sKeyMap.put(THRESHOLD_INITIAL_AUTO_JOIN_ATTEMPT_RSSI_MIN_5G_KEY, thresholdInitialAutoJoinAttemptMin5RSSI); 546 sKeyMap.put(THRESHOLD_INITIAL_AUTO_JOIN_ATTEMPT_RSSI_MIN_24G_KEY, thresholdInitialAutoJoinAttemptMin24RSSI); 547 sKeyMap.put(THRESHOLD_UNBLACKLIST_HARD_5G_KEY, thresholdUnblacklistThreshold5Hard); 548 sKeyMap.put(THRESHOLD_UNBLACKLIST_SOFT_5G_KEY, thresholdUnblacklistThreshold5Soft); 549 sKeyMap.put(THRESHOLD_UNBLACKLIST_HARD_24G_KEY, thresholdUnblacklistThreshold24Hard); 550 sKeyMap.put(THRESHOLD_UNBLACKLIST_SOFT_24G_KEY, thresholdUnblacklistThreshold24Soft); 551 sKeyMap.put(THRESHOLD_GOOD_RSSI_5_KEY, thresholdGoodRssi5); 552 sKeyMap.put(THRESHOLD_LOW_RSSI_5_KEY, thresholdLowRssi5); 553 sKeyMap.put(THRESHOLD_BAD_RSSI_5_KEY, thresholdBadRssi5); 554 sKeyMap.put(THRESHOLD_GOOD_RSSI_24_KEY, thresholdGoodRssi24); 555 sKeyMap.put(THRESHOLD_LOW_RSSI_24_KEY, thresholdLowRssi24); 556 sKeyMap.put(THRESHOLD_BAD_RSSI_24_KEY, thresholdBadRssi24); 557 sKeyMap.put(THRESHOLD_MAX_TX_PACKETS_FOR_NETWORK_SWITCHING_KEY, maxTxPacketForNetworkSwitching); 558 sKeyMap.put(THRESHOLD_MAX_RX_PACKETS_FOR_NETWORK_SWITCHING_KEY, maxRxPacketForNetworkSwitching); 559 sKeyMap.put(THRESHOLD_MAX_TX_PACKETS_FOR_FULL_SCANS_KEY, maxTxPacketForNetworkSwitching); 560 sKeyMap.put(THRESHOLD_MAX_RX_PACKETS_FOR_FULL_SCANS_KEY, maxRxPacketForNetworkSwitching); 561 sKeyMap.put(THRESHOLD_MAX_TX_PACKETS_FOR_PARTIAL_SCANS_KEY, maxTxPacketForNetworkSwitching); 562 sKeyMap.put(THRESHOLD_MAX_RX_PACKETS_FOR_PARTIAL_SCANS_KEY, maxRxPacketForNetworkSwitching); 563 sKeyMap.put(WIFI_VERBOSE_LOGS_KEY, enableVerboseLogging); 564 sKeyMap.put(A_BAND_PREFERENCE_RSSI_THRESHOLD_KEY, bandPreferenceBoostThreshold5); 565 sKeyMap.put(ASSOCIATED_PARTIAL_SCAN_PERIOD_KEY, wifiAssociatedShortScanIntervalMilli); 566 sKeyMap.put(ASSOCIATED_PARTIAL_SCAN_PERIOD_KEY, wifiAssociatedShortScanIntervalMilli); 567 568 sKeyMap.put(ASSOCIATED_FULL_SCAN_BACKOFF_KEY, associatedFullScanBackoff); 569 sKeyMap.put(G_BAND_PREFERENCE_RSSI_THRESHOLD_KEY, bandPreferencePenaltyThreshold5); 570 sKeyMap.put(ALWAYS_ENABLE_SCAN_WHILE_ASSOCIATED_KEY, alwaysEnableScansWhileAssociated); 571 sKeyMap.put(MAX_NUM_PASSIVE_CHANNELS_FOR_PARTIAL_SCANS_KEY, maxNumPassiveChannelsForPartialScans); 572 sKeyMap.put(MAX_NUM_ACTIVE_CHANNELS_FOR_PARTIAL_SCANS_KEY, maxNumActiveChannelsForPartialScans); 573 sKeyMap.put(ENABLE_HAL_BASED_PNO, enableHalBasedPno); 574 sKeyMap.put(ENABLE_HAL_BASED_PNO, enableSsidWhitelist); 575 576 if (showNetworks) { 577 mLocalLog = mWifiNative.getLocalLog(); 578 mFileObserver = new WpaConfigFileObserver(); 579 mFileObserver.startWatching(); 580 } else { 581 mLocalLog = null; 582 mFileObserver = null; 583 } 584 585 wifiAssociatedShortScanIntervalMilli.set(mContext.getResources().getInteger( 586 R.integer.config_wifi_associated_short_scan_interval)); 587 wifiAssociatedLongScanIntervalMilli.set(mContext.getResources().getInteger( 588 R.integer.config_wifi_associated_short_scan_interval)); 589 wifiDisconnectedShortScanIntervalMilli.set(mContext.getResources().getInteger( 590 R.integer.config_wifi_disconnected_short_scan_interval)); 591 wifiDisconnectedLongScanIntervalMilli.set(mContext.getResources().getInteger( 592 R.integer.config_wifi_disconnected_long_scan_interval)); 593 594 onlyLinkSameCredentialConfigurations = mContext.getResources().getBoolean( 595 R.bool.config_wifi_only_link_same_credential_configurations); 596 maxNumActiveChannelsForPartialScans.set(mContext.getResources().getInteger( 597 R.integer.config_wifi_framework_associated_partial_scan_max_num_active_channels)); 598 maxNumPassiveChannelsForPartialScans.set(mContext.getResources().getInteger( 599 R.integer.config_wifi_framework_associated_partial_scan_max_num_passive_channels)); 600 associatedFullScanMaxIntervalMilli = mContext.getResources().getInteger( 601 R.integer.config_wifi_framework_associated_full_scan_max_interval); 602 associatedFullScanBackoff.set(mContext.getResources().getInteger( 603 R.integer.config_wifi_framework_associated_full_scan_backoff)); 604 enableLinkDebouncing = mContext.getResources().getBoolean( 605 R.bool.config_wifi_enable_disconnection_debounce); 606 607 enable5GHzPreference = mContext.getResources().getBoolean( 608 R.bool.config_wifi_enable_5GHz_preference); 609 610 bandPreferenceBoostFactor5 = mContext.getResources().getInteger( 611 R.integer.config_wifi_framework_5GHz_preference_boost_factor); 612 bandPreferencePenaltyFactor5 = mContext.getResources().getInteger( 613 R.integer.config_wifi_framework_5GHz_preference_penalty_factor); 614 615 bandPreferencePenaltyThreshold5.set(mContext.getResources().getInteger( 616 R.integer.config_wifi_framework_5GHz_preference_penalty_threshold)); 617 bandPreferenceBoostThreshold5.set(mContext.getResources().getInteger( 618 R.integer.config_wifi_framework_5GHz_preference_boost_threshold)); 619 620 associatedHysteresisHigh = mContext.getResources().getInteger( 621 R.integer.config_wifi_framework_current_association_hysteresis_high); 622 associatedHysteresisLow = mContext.getResources().getInteger( 623 R.integer.config_wifi_framework_current_association_hysteresis_low); 624 625 thresholdBadRssi5.set(mContext.getResources().getInteger( 626 R.integer.config_wifi_framework_wifi_score_bad_rssi_threshold_5GHz)); 627 thresholdLowRssi5.set(mContext.getResources().getInteger( 628 R.integer.config_wifi_framework_wifi_score_low_rssi_threshold_5GHz)); 629 thresholdGoodRssi5.set(mContext.getResources().getInteger( 630 R.integer.config_wifi_framework_wifi_score_good_rssi_threshold_5GHz)); 631 thresholdBadRssi24.set(mContext.getResources().getInteger( 632 R.integer.config_wifi_framework_wifi_score_bad_rssi_threshold_24GHz)); 633 thresholdLowRssi24.set(mContext.getResources().getInteger( 634 R.integer.config_wifi_framework_wifi_score_low_rssi_threshold_24GHz)); 635 thresholdGoodRssi24.set(mContext.getResources().getInteger( 636 R.integer.config_wifi_framework_wifi_score_good_rssi_threshold_24GHz)); 637 638 enableWifiCellularHandoverUserTriggeredAdjustment = mContext.getResources().getBoolean( 639 R.bool.config_wifi_framework_cellular_handover_enable_user_triggered_adjustment); 640 641 badLinkSpeed24 = mContext.getResources().getInteger( 642 R.integer.config_wifi_framework_wifi_score_bad_link_speed_24); 643 badLinkSpeed5 = mContext.getResources().getInteger( 644 R.integer.config_wifi_framework_wifi_score_bad_link_speed_5); 645 goodLinkSpeed24 = mContext.getResources().getInteger( 646 R.integer.config_wifi_framework_wifi_score_good_link_speed_24); 647 goodLinkSpeed5 = mContext.getResources().getInteger( 648 R.integer.config_wifi_framework_wifi_score_good_link_speed_5); 649 650 maxAuthErrorsToBlacklist = mContext.getResources().getInteger( 651 R.integer.config_wifi_framework_max_auth_errors_to_blacklist); 652 maxConnectionErrorsToBlacklist = mContext.getResources().getInteger( 653 R.integer.config_wifi_framework_max_connection_errors_to_blacklist); 654 wifiConfigBlacklistMinTimeMilli = mContext.getResources().getInteger( 655 R.integer.config_wifi_framework_network_black_list_min_time_milli); 656 657 658 enableAutoJoinScanWhenAssociated.set(mContext.getResources().getBoolean( 659 R.bool.config_wifi_framework_enable_associated_autojoin_scan)); 660 661 enableAutoJoinWhenAssociated.set(mContext.getResources().getBoolean( 662 R.bool.config_wifi_framework_enable_associated_network_selection)); 663 664 currentNetworkBoost = mContext.getResources().getInteger( 665 R.integer.config_wifi_framework_current_network_boost); 666 667 scanResultRssiLevelPatchUp = mContext.getResources().getInteger( 668 R.integer.config_wifi_framework_scan_result_rssi_level_patchup_value); 669 670 networkSwitchingBlackListPeriodMilli = mContext.getResources().getInteger( 671 R.integer.config_wifi_network_switching_blacklist_time); 672 673 enableHalBasedPno.set(mContext.getResources().getBoolean( 674 R.bool.config_wifi_hal_pno_enable)); 675 676 enableSsidWhitelist.set(mContext.getResources().getBoolean( 677 R.bool.config_wifi_ssid_white_list_enable)); 678 if (!enableHalBasedPno.get() && enableSsidWhitelist.get()) { 679 enableSsidWhitelist.set(false); 680 } 681 682 boolean hs2on = mContext.getResources().getBoolean(R.bool.config_wifi_hotspot2_enabled); 683 Log.d(Utils.hs2LogTag(getClass()), "Passpoint is " + (hs2on ? "enabled" : "disabled")); 684 685 mMOManager = new MOManager(new File(PPS_FILE), hs2on); 686 mAnqpCache = new AnqpCache(); 687 mSupplicantBridge = new SupplicantBridge(mWifiNative, this); 688 mScanDetailCaches = new HashMap<>(); 689 690 mSIMAccessor = new SIMAccessor(mContext); 691 } 692 693 public void trimANQPCache(boolean all) { 694 mAnqpCache.clear(all, DBG); 695 } 696 697 void enableVerboseLogging(int verbose) { 698 enableVerboseLogging.set(verbose); 699 if (verbose > 0) { 700 VDBG = true; 701 showNetworks = true; 702 } else { 703 VDBG = false; 704 } 705 if (verbose > 1) { 706 VVDBG = true; 707 } else { 708 VVDBG = false; 709 } 710 } 711 712 class WpaConfigFileObserver extends FileObserver { 713 714 public WpaConfigFileObserver() { 715 super(SUPPLICANT_CONFIG_FILE, CLOSE_WRITE); 716 } 717 718 @Override 719 public void onEvent(int event, String path) { 720 if (event == CLOSE_WRITE) { 721 File file = new File(SUPPLICANT_CONFIG_FILE); 722 if (VDBG) localLog("wpa_supplicant.conf changed; new size = " + file.length()); 723 } 724 } 725 } 726 727 728 /** 729 * Fetch the list of configured networks 730 * and enable all stored networks in supplicant. 731 */ 732 void loadAndEnableAllNetworks() { 733 if (DBG) log("Loading config and enabling all networks "); 734 loadConfiguredNetworks(); 735 enableAllNetworks(); 736 } 737 738 int getConfiguredNetworksSize() { 739 return mConfiguredNetworks.size(); 740 } 741 742 private List<WifiConfiguration> 743 getConfiguredNetworks(Map<String, String> pskMap) { 744 List<WifiConfiguration> networks = new ArrayList<>(); 745 for(WifiConfiguration config : mConfiguredNetworks.values()) { 746 WifiConfiguration newConfig = new WifiConfiguration(config); 747 // When updating this condition, update WifiStateMachine's CONNECT_NETWORK handler to 748 // correctly handle updating existing configs that are filtered out here. 749 if (config.autoJoinStatus == WifiConfiguration.AUTO_JOIN_DELETED || config.ephemeral) { 750 // Do not enumerate and return this configuration to any one, 751 // for instance WiFi Picker. 752 // instead treat it as unknown. the configuration can still be retrieved 753 // directly by the key or networkId 754 continue; 755 } 756 757 if (pskMap != null && config.allowedKeyManagement != null 758 && config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_PSK) 759 && pskMap.containsKey(config.SSID)) { 760 newConfig.preSharedKey = pskMap.get(config.SSID); 761 } 762 networks.add(newConfig); 763 } 764 return networks; 765 } 766 767 /** 768 * This function returns all configuration, and is used for cebug and creating bug reports. 769 */ 770 private List<WifiConfiguration> 771 getAllConfiguredNetworks() { 772 List<WifiConfiguration> networks = new ArrayList<>(); 773 for(WifiConfiguration config : mConfiguredNetworks.values()) { 774 WifiConfiguration newConfig = new WifiConfiguration(config); 775 networks.add(newConfig); 776 } 777 return networks; 778 } 779 780 /** 781 * Fetch the list of currently configured networks 782 * @return List of networks 783 */ 784 List<WifiConfiguration> getConfiguredNetworks() { 785 return getConfiguredNetworks(null); 786 } 787 788 /** 789 * Fetch the list of currently configured networks, filled with real preSharedKeys 790 * @return List of networks 791 */ 792 List<WifiConfiguration> getPrivilegedConfiguredNetworks() { 793 Map<String, String> pskMap = getCredentialsBySsidMap(); 794 return getConfiguredNetworks(pskMap); 795 } 796 797 /** 798 * Find matching network for this scanResult 799 */ 800 WifiConfiguration getMatchingConfig(ScanResult scanResult) { 801 802 for (Map.Entry entry : mScanDetailCaches.entrySet()) { 803 Integer netId = (Integer) entry.getKey(); 804 ScanDetailCache cache = (ScanDetailCache) entry.getValue(); 805 WifiConfiguration config = getWifiConfiguration(netId); 806 if (config == null) 807 continue; 808 if (cache.get(scanResult.BSSID) != null) { 809 return config; 810 } 811 } 812 813 return null; 814 } 815 816 /** 817 * Fetch the preSharedKeys for all networks. 818 * @return a map from Ssid to preSharedKey. 819 */ 820 private Map<String, String> getCredentialsBySsidMap() { 821 return readNetworkVariablesFromSupplicantFile("psk"); 822 } 823 824 /** 825 * Fetch the list of currently configured networks that were recently seen 826 * 827 * @return List of networks 828 */ 829 List<WifiConfiguration> getRecentConfiguredNetworks(int milli, boolean copy) { 830 List<WifiConfiguration> networks = new ArrayList<WifiConfiguration>(); 831 832 for (WifiConfiguration config : mConfiguredNetworks.values()) { 833 if (config.autoJoinStatus == WifiConfiguration.AUTO_JOIN_DELETED || config.ephemeral) { 834 // Do not enumerate and return this configuration to any one, 835 // instead treat it as unknown. the configuration can still be retrieved 836 // directly by the key or networkId 837 continue; 838 } 839 840 // Calculate the RSSI for scan results that are more recent than milli 841 ScanDetailCache cache = getScanDetailCache(config); 842 if (cache == null) { 843 continue; 844 } 845 config.setVisibility(cache.getVisibility(milli)); 846 if (config.visibility == null) { 847 continue; 848 } 849 if (config.visibility.rssi5 == WifiConfiguration.INVALID_RSSI && 850 config.visibility.rssi24 == WifiConfiguration.INVALID_RSSI) { 851 continue; 852 } 853 if (copy) { 854 networks.add(new WifiConfiguration(config)); 855 } else { 856 networks.add(config); 857 } 858 } 859 return networks; 860 } 861 862 /** 863 * Update the configuration and BSSID with latest RSSI value. 864 */ 865 void updateConfiguration(WifiInfo info) { 866 WifiConfiguration config = getWifiConfiguration(info.getNetworkId()); 867 if (config != null && getScanDetailCache(config) != null) { 868 ScanDetail scanDetail = getScanDetailCache(config).getScanDetail(info.getBSSID()); 869 if (scanDetail != null) { 870 ScanResult result = scanDetail.getScanResult(); 871 long previousSeen = result.seen; 872 int previousRssi = result.level; 873 874 // Update the scan result 875 scanDetail.setSeen(); 876 result.level = info.getRssi(); 877 878 // Average the RSSI value 879 result.averageRssi(previousRssi, previousSeen, 880 WifiAutoJoinController.mScanResultMaximumAge); 881 if (VDBG) { 882 loge("updateConfiguration freq=" + result.frequency 883 + " BSSID=" + result.BSSID 884 + " RSSI=" + result.level 885 + " " + config.configKey()); 886 } 887 } 888 } 889 } 890 891 /** 892 * get the Wificonfiguration for this netId 893 * 894 * @return Wificonfiguration 895 */ 896 WifiConfiguration getWifiConfiguration(int netId) { 897 return mConfiguredNetworks.get(netId); 898 } 899 900 /** 901 * Get the Wificonfiguration for this key 902 * @return Wificonfiguration 903 */ 904 WifiConfiguration getWifiConfiguration(String key) { 905 return mConfiguredNetworks.getByConfigKey(key); 906 } 907 908 /** 909 * Enable all networks and save config. This will be a no-op if the list 910 * of configured networks indicates all networks as being enabled 911 */ 912 void enableAllNetworks() { 913 long now = System.currentTimeMillis(); 914 boolean networkEnabledStateChanged = false; 915 916 for(WifiConfiguration config : mConfiguredNetworks.values()) { 917 918 if(config != null && config.status == Status.DISABLED && !config.ephemeral 919 && (config.autoJoinStatus 920 <= WifiConfiguration.AUTO_JOIN_DISABLED_ON_AUTH_FAILURE)) { 921 922 // Wait for 5 minutes before reenabling config that have known, repeated connection 923 // or DHCP failures 924 if (config.disableReason == WifiConfiguration.DISABLED_DHCP_FAILURE 925 || config.disableReason == WifiConfiguration.DISABLED_ASSOCIATION_REJECT 926 || config.disableReason == WifiConfiguration.DISABLED_AUTH_FAILURE) { 927 if (config.blackListTimestamp != 0 928 && now > config.blackListTimestamp 929 && (now - config.blackListTimestamp) < wifiConfigBlacklistMinTimeMilli) { 930 continue; 931 } 932 } 933 934 if(mWifiNative.enableNetwork(config.networkId, false)) { 935 networkEnabledStateChanged = true; 936 config.status = Status.ENABLED; 937 938 // Reset the blacklist condition 939 config.numConnectionFailures = 0; 940 config.numIpConfigFailures = 0; 941 config.numAuthFailures = 0; 942 943 // Reenable the wifi configuration 944 config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 945 } else { 946 loge("Enable network failed on " + config.networkId); 947 948 } 949 } 950 } 951 952 if (networkEnabledStateChanged) { 953 mWifiNative.saveConfig(); 954 sendConfiguredNetworksChangedBroadcast(); 955 } 956 } 957 958 private boolean setNetworkPriorityNative(int netId, int priority) { 959 return mWifiNative.setNetworkVariable(netId, 960 WifiConfiguration.priorityVarName, Integer.toString(priority)); 961 } 962 963 private boolean setSSIDNative(int netId, String ssid) { 964 return mWifiNative.setNetworkVariable(netId, WifiConfiguration.ssidVarName, 965 encodeSSID(ssid)); 966 } 967 968 public boolean updateLastConnectUid(WifiConfiguration config, int uid) { 969 if (config != null) { 970 if (config.lastConnectUid != uid) { 971 config.lastConnectUid = uid; 972 config.dirty = true; 973 return true; 974 } 975 } 976 return false; 977 } 978 979 /** 980 * Selects the specified network for connection. This involves 981 * updating the priority of all the networks and enabling the given 982 * network while disabling others. 983 * 984 * Selecting a network will leave the other networks disabled and 985 * a call to enableAllNetworks() needs to be issued upon a connection 986 * or a failure event from supplicant 987 * 988 * @param config network to select for connection 989 * @param updatePriorities makes config highest priority network 990 * @return false if the network id is invalid 991 */ 992 boolean selectNetwork(WifiConfiguration config, boolean updatePriorities, int uid) { 993 if (VDBG) localLog("selectNetwork", config.networkId); 994 if (config.networkId == INVALID_NETWORK_ID) return false; 995 996 // Reset the priority of each network at start or if it goes too high. 997 if (mLastPriority == -1 || mLastPriority > 1000000) { 998 for(WifiConfiguration config2 : mConfiguredNetworks.values()) { 999 if (updatePriorities) { 1000 if (config2.networkId != INVALID_NETWORK_ID) { 1001 config2.priority = 0; 1002 setNetworkPriorityNative(config2.networkId, config.priority); 1003 } 1004 } 1005 } 1006 mLastPriority = 0; 1007 } 1008 1009 // Set to the highest priority and save the configuration. 1010 if (updatePriorities) { 1011 config.priority = ++mLastPriority; 1012 setNetworkPriorityNative(config.networkId, config.priority); 1013 buildPnoList(); 1014 } 1015 1016 if (config.isPasspoint()) { 1017 /* need to slap on the SSID of selected bssid to work */ 1018 if (getScanDetailCache(config).size() != 0) { 1019 ScanDetail result = getScanDetailCache(config).getFirst(); 1020 if (result == null) { 1021 loge("Could not find scan result for " + config.BSSID); 1022 } else { 1023 log("Setting SSID for " + config.networkId + " to" + result.getSSID()); 1024 setSSIDNative(config.networkId, result.getSSID()); 1025 } 1026 1027 } else { 1028 loge("Could not find bssid for " + config); 1029 } 1030 } 1031 1032 if (updatePriorities) 1033 mWifiNative.saveConfig(); 1034 else 1035 mWifiNative.selectNetwork(config.networkId); 1036 1037 updateLastConnectUid(config, uid); 1038 writeKnownNetworkHistory(false); 1039 1040 /* Enable the given network while disabling all other networks */ 1041 enableNetworkWithoutBroadcast(config.networkId, true); 1042 1043 /* Avoid saving the config & sending a broadcast to prevent settings 1044 * from displaying a disabled list of networks */ 1045 return true; 1046 } 1047 1048 /** 1049 * Add/update the specified configuration and save config 1050 * 1051 * @param config WifiConfiguration to be saved 1052 * @return network update result 1053 */ 1054 NetworkUpdateResult saveNetwork(WifiConfiguration config, int uid) { 1055 WifiConfiguration conf; 1056 1057 // A new network cannot have null SSID 1058 if (config == null || (config.networkId == INVALID_NETWORK_ID && 1059 config.SSID == null)) { 1060 return new NetworkUpdateResult(INVALID_NETWORK_ID); 1061 } 1062 if (VDBG) localLog("WifiConfigStore: saveNetwork netId", config.networkId); 1063 if (VDBG) { 1064 loge("WifiConfigStore saveNetwork, size=" + mConfiguredNetworks.size() 1065 + " SSID=" + config.SSID 1066 + " Uid=" + Integer.toString(config.creatorUid) 1067 + "/" + Integer.toString(config.lastUpdateUid)); 1068 } 1069 1070 if (mDeletedEphemeralSSIDs.remove(config.SSID)) { 1071 if (VDBG) { 1072 loge("WifiConfigStore: removed from ephemeral blacklist: " + config.SSID); 1073 } 1074 // NOTE: This will be flushed to disk as part of the addOrUpdateNetworkNative call 1075 // below, since we're creating/modifying a config. 1076 } 1077 1078 boolean newNetwork = (config.networkId == INVALID_NETWORK_ID); 1079 NetworkUpdateResult result = addOrUpdateNetworkNative(config, uid); 1080 int netId = result.getNetworkId(); 1081 1082 if (VDBG) localLog("WifiConfigStore: saveNetwork got it back netId=", netId); 1083 1084 /* enable a new network */ 1085 if (newNetwork && netId != INVALID_NETWORK_ID) { 1086 if (VDBG) localLog("WifiConfigStore: will enable netId=", netId); 1087 1088 mWifiNative.enableNetwork(netId, false); 1089 conf = mConfiguredNetworks.get(netId); 1090 if (conf != null) 1091 conf.status = Status.ENABLED; 1092 } 1093 1094 conf = mConfiguredNetworks.get(netId); 1095 if (conf != null) { 1096 if (conf.autoJoinStatus != WifiConfiguration.AUTO_JOIN_ENABLED) { 1097 if (VDBG) localLog("WifiConfigStore: re-enabling: " + conf.SSID); 1098 1099 // reenable autojoin, since new information has been provided 1100 conf.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 1101 enableNetworkWithoutBroadcast(conf.networkId, false); 1102 } 1103 if (VDBG) { 1104 loge("WifiConfigStore: saveNetwork got config back netId=" 1105 + Integer.toString(netId) 1106 + " uid=" + Integer.toString(config.creatorUid)); 1107 } 1108 } 1109 1110 mWifiNative.saveConfig(); 1111 sendConfiguredNetworksChangedBroadcast(conf, result.isNewNetwork() ? 1112 WifiManager.CHANGE_REASON_ADDED : WifiManager.CHANGE_REASON_CONFIG_CHANGE); 1113 return result; 1114 } 1115 1116 /** 1117 * Firmware is roaming away from this BSSID, and this BSSID was on 5GHz, and it's RSSI was good, 1118 * this means we have a situation where we would want to remain on this BSSID but firmware 1119 * is not successful at it. 1120 * This situation is observed on a small number of Access Points, b/17960587 1121 * In that situation, blacklist this BSSID really hard so as framework will not attempt to 1122 * roam to it for the next 8 hours. We do not to keep flipping between 2.4 and 5GHz band.. 1123 * TODO: review the blacklisting strategy so as to make it softer and adaptive 1124 * @param info 1125 */ 1126 void driverRoamedFrom(WifiInfo info) { 1127 if (info != null 1128 && info.getBSSID() != null 1129 && ScanResult.is5GHz(info.getFrequency()) 1130 && info.getRssi() > (bandPreferenceBoostThreshold5.get() + 3)) { 1131 WifiConfiguration config = getWifiConfiguration(info.getNetworkId()); 1132 if (config != null) { 1133 if (getScanDetailCache(config) != null) { 1134 ScanResult result = getScanDetailCache(config).get(info.getBSSID()); 1135 if (result != null) { 1136 result.setAutoJoinStatus(ScanResult.AUTO_ROAM_DISABLED + 1); 1137 } 1138 } 1139 } 1140 } 1141 } 1142 1143 void noteRoamingFailure(WifiConfiguration config, int reason) { 1144 if (config == null) return; 1145 config.lastRoamingFailure = System.currentTimeMillis(); 1146 config.roamingFailureBlackListTimeMilli 1147 = 2 * (config.roamingFailureBlackListTimeMilli + 1000); 1148 if (config.roamingFailureBlackListTimeMilli 1149 > networkSwitchingBlackListPeriodMilli) { 1150 config.roamingFailureBlackListTimeMilli = 1151 networkSwitchingBlackListPeriodMilli; 1152 } 1153 config.lastRoamingFailureReason = reason; 1154 } 1155 1156 void saveWifiConfigBSSID(WifiConfiguration config) { 1157 // Sanity check the config is valid 1158 if (config == null || (config.networkId == INVALID_NETWORK_ID && 1159 config.SSID == null)) { 1160 return; 1161 } 1162 1163 // If an app specified a BSSID then dont over-write it 1164 if (config.BSSID != null && config.BSSID != "any") { 1165 return; 1166 } 1167 1168 // If autojoin specified a BSSID then write it in the network block 1169 if (config.autoJoinBSSID != null) { 1170 loge("saveWifiConfigBSSID Setting BSSID for " + config.configKey() 1171 + " to " + config.autoJoinBSSID); 1172 if (!mWifiNative.setNetworkVariable( 1173 config.networkId, 1174 WifiConfiguration.bssidVarName, 1175 config.autoJoinBSSID)) { 1176 loge("failed to set BSSID: " + config.autoJoinBSSID); 1177 } else if (config.autoJoinBSSID.equals("any")) { 1178 // Paranoia, we just want to make sure that we restore the config to normal 1179 mWifiNative.saveConfig(); 1180 } 1181 } 1182 } 1183 1184 1185 void updateStatus(int netId, DetailedState state) { 1186 if (netId != INVALID_NETWORK_ID) { 1187 WifiConfiguration config = mConfiguredNetworks.get(netId); 1188 if (config == null) return; 1189 switch (state) { 1190 case CONNECTED: 1191 config.status = Status.CURRENT; 1192 //we successfully connected, hence remove the blacklist 1193 config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 1194 break; 1195 case DISCONNECTED: 1196 //If network is already disabled, keep the status 1197 if (config.status == Status.CURRENT) { 1198 config.status = Status.ENABLED; 1199 } 1200 break; 1201 default: 1202 //do nothing, retain the existing state 1203 break; 1204 } 1205 } 1206 } 1207 1208 1209 /** 1210 * Disable an ephemeral SSID for the purpose of auto-joining thru scored. 1211 * This SSID will never be scored anymore. 1212 * The only way to "un-disable it" is if the user create a network for that SSID and then 1213 * forget it. 1214 * 1215 * @param SSID caller must ensure that the SSID passed thru this API match 1216 * the WifiConfiguration.SSID rules, and thus be surrounded by quotes. 1217 * @return the {@link WifiConfiguration} corresponding to this SSID, if any, so that we can 1218 * disconnect if this is the current network. 1219 */ 1220 WifiConfiguration disableEphemeralNetwork(String SSID) { 1221 if (SSID == null) { 1222 return null; 1223 } 1224 1225 WifiConfiguration foundConfig = mConfiguredNetworks.getEphemeral(SSID); 1226 1227 mDeletedEphemeralSSIDs.add(SSID); 1228 loge("Forget ephemeral SSID " + SSID + " num=" + mDeletedEphemeralSSIDs.size()); 1229 1230 if (foundConfig != null) { 1231 loge("Found ephemeral config in disableEphemeralNetwork: " + foundConfig.networkId); 1232 } 1233 1234 // Force a write, because the mDeletedEphemeralSSIDs list has changed even though the 1235 // configurations may not have. 1236 writeKnownNetworkHistory(true); 1237 1238 return foundConfig; 1239 } 1240 1241 /** 1242 * Forget the specified network and save config 1243 * 1244 * @param netId network to forget 1245 * @return {@code true} if it succeeds, {@code false} otherwise 1246 */ 1247 boolean forgetNetwork(int netId) { 1248 if (showNetworks) localLog("forgetNetwork", netId); 1249 1250 WifiConfiguration config = mConfiguredNetworks.get(netId); 1251 boolean remove = removeConfigAndSendBroadcastIfNeeded(netId); 1252 if (!remove) { 1253 //success but we dont want to remove the network from supplicant conf file 1254 return true; 1255 } 1256 if (mWifiNative.removeNetwork(netId)) { 1257 if (config != null && config.isPasspoint()) { 1258 writePasspointConfigs(config.FQDN, null); 1259 } 1260 mWifiNative.saveConfig(); 1261 writeKnownNetworkHistory(true); 1262 return true; 1263 } else { 1264 loge("Failed to remove network " + netId); 1265 return false; 1266 } 1267 } 1268 1269 /** 1270 * Add/update a network. Note that there is no saveConfig operation. 1271 * This function is retained for compatibility with the public 1272 * API. The more powerful saveNetwork() is used by the 1273 * state machine 1274 * 1275 * @param config wifi configuration to add/update 1276 * @return network Id 1277 */ 1278 int addOrUpdateNetwork(WifiConfiguration config, int uid) { 1279 if (showNetworks) localLog("addOrUpdateNetwork id=", config.networkId); 1280 //adding unconditional message to chase b/15111865 1281 Log.e(TAG, " key=" + config.configKey() + " netId=" + Integer.toString(config.networkId) 1282 + " uid=" + Integer.toString(config.creatorUid) 1283 + "/" + Integer.toString(config.lastUpdateUid)); 1284 1285 if (config.isPasspoint()) { 1286 /* create a temporary SSID with providerFriendlyName */ 1287 Long csum = getChecksum(config.FQDN); 1288 config.SSID = csum.toString(); 1289 } 1290 1291 NetworkUpdateResult result = addOrUpdateNetworkNative(config, uid); 1292 if (result.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 1293 WifiConfiguration conf = mConfiguredNetworks.get(result.getNetworkId()); 1294 if (conf != null) { 1295 sendConfiguredNetworksChangedBroadcast(conf, 1296 result.isNewNetwork ? WifiManager.CHANGE_REASON_ADDED : 1297 WifiManager.CHANGE_REASON_CONFIG_CHANGE); 1298 } 1299 } 1300 1301 return result.getNetworkId(); 1302 } 1303 1304 1305 /** 1306 * Get the Wifi PNO list 1307 * 1308 * @return list of WifiNative.WifiPnoNetwork 1309 */ 1310 private void buildPnoList() { 1311 mCachedPnoList = new ArrayList<WifiNative.WifiPnoNetwork>(); 1312 1313 ArrayList<WifiConfiguration> sortedWifiConfigurations 1314 = new ArrayList<WifiConfiguration>(getConfiguredNetworks()); 1315 Log.e(TAG, "buildPnoList sortedWifiConfigurations size " + sortedWifiConfigurations.size()); 1316 if (sortedWifiConfigurations.size() != 0) { 1317 // Sort by descending priority 1318 Collections.sort(sortedWifiConfigurations, new Comparator<WifiConfiguration>() { 1319 public int compare(WifiConfiguration a, WifiConfiguration b) { 1320 return a.priority >= b.priority ? 1 : -1; 1321 } 1322 }); 1323 } 1324 1325 for (WifiConfiguration config : sortedWifiConfigurations) { 1326 // Initialize the RSSI threshold with sane value: 1327 // Use the 2.4GHz threshold since most WifiConfigurations are dual bands 1328 // There is very little penalty with triggering too soon, i.e. if PNO finds a network 1329 // that has an RSSI too low for us to attempt joining it. 1330 int threshold = thresholdInitialAutoJoinAttemptMin24RSSI.get(); 1331 Log.e(TAG, "found sortedWifiConfigurations : " + config.configKey()); 1332 WifiNative.WifiPnoNetwork network = mWifiNative.new WifiPnoNetwork(config, threshold); 1333 mCachedPnoList.add(network); 1334 } 1335 } 1336 1337 String[] getWhiteListedSsids(WifiConfiguration config) { 1338 int num_ssids = 0; 1339 String nonQuoteSSID; 1340 int length; 1341 if (enableSsidWhitelist.get() == false) 1342 return null; 1343 List<String> list = new ArrayList<String>(); 1344 if (config == null) 1345 return null; 1346 if (config.linkedConfigurations == null) { 1347 return null; 1348 } 1349 if (config.SSID == null || TextUtils.isEmpty(config.SSID)) { 1350 return null; 1351 } 1352 for (String configKey : config.linkedConfigurations.keySet()) { 1353 1354 // Sanity check that the linked configuration is still valid 1355 WifiConfiguration link = getWifiConfiguration(configKey); 1356 if (link == null) { 1357 continue; 1358 } 1359 1360 if (link.autoJoinStatus != WifiConfiguration.AUTO_JOIN_ENABLED) { 1361 continue; 1362 } 1363 1364 if (link.hiddenSSID == true) { 1365 continue; 1366 } 1367 1368 if (link.SSID == null || TextUtils.isEmpty(link.SSID)) { 1369 continue; 1370 } 1371 1372 length = link.SSID.length(); 1373 if (length > 2 && (link.SSID.charAt(0) == '"') && link.SSID.charAt(length - 1) == '"') { 1374 nonQuoteSSID = link.SSID.substring(1, length - 1); 1375 } else { 1376 nonQuoteSSID = link.SSID; 1377 } 1378 1379 list.add(nonQuoteSSID); 1380 } 1381 1382 if (list.size() != 0) { 1383 length = config.SSID.length(); 1384 if (length > 2 && (config.SSID.charAt(0) == '"') 1385 && config.SSID.charAt(length - 1) == '"') { 1386 nonQuoteSSID = config.SSID.substring(1, length - 1); 1387 } else { 1388 nonQuoteSSID = config.SSID; 1389 } 1390 1391 list.add(nonQuoteSSID); 1392 } 1393 1394 return (String[])list.toArray(new String[0]); 1395 } 1396 1397 /** 1398 * Remove a network. Note that there is no saveConfig operation. 1399 * This function is retained for compatibility with the public 1400 * API. The more powerful forgetNetwork() is used by the 1401 * state machine for network removal 1402 * 1403 * @param netId network to be removed 1404 * @return {@code true} if it succeeds, {@code false} otherwise 1405 */ 1406 boolean removeNetwork(int netId) { 1407 if (showNetworks) localLog("removeNetwork", netId); 1408 boolean ret = mWifiNative.removeNetwork(netId); 1409 if (ret) { 1410 removeConfigAndSendBroadcastIfNeeded(netId); 1411 } 1412 return ret; 1413 } 1414 1415 1416 static private Long getChecksum(String source) { 1417 Checksum csum = new CRC32(); 1418 csum.update(source.getBytes(), 0, source.getBytes().length); 1419 return csum.getValue(); 1420 } 1421 1422 private boolean removeConfigAndSendBroadcastIfNeeded(int netId) { 1423 WifiConfiguration config = mConfiguredNetworks.get(netId); 1424 if (config != null) { 1425 if (VDBG) { 1426 loge("removeNetwork " + Integer.toString(netId) + " key=" + 1427 config.configKey() + " config.id=" + Integer.toString(config.networkId)); 1428 } 1429 1430 // cancel the last user choice 1431 if (config.configKey().equals(lastSelectedConfiguration)) { 1432 lastSelectedConfiguration = null; 1433 } 1434 1435 // Remove any associated keys 1436 if (config.enterpriseConfig != null) { 1437 removeKeys(config.enterpriseConfig); 1438 } 1439 1440 if (config.selfAdded || config.linkedConfigurations != null 1441 || config.allowedKeyManagement.get(KeyMgmt.WPA_PSK)) { 1442 if (!TextUtils.isEmpty(config.SSID)) { 1443 /* Remember that we deleted this PSK SSID */ 1444 if (config.SSID != null) { 1445 Long csum = getChecksum(config.SSID); 1446 mDeletedSSIDs.add(csum); 1447 loge("removeNetwork " + Integer.toString(netId) 1448 + " key=" + config.configKey() 1449 + " config.id=" + Integer.toString(config.networkId) 1450 + " crc=" + csum); 1451 } else { 1452 loge("removeNetwork " + Integer.toString(netId) 1453 + " key=" + config.configKey() 1454 + " config.id=" + Integer.toString(config.networkId)); 1455 } 1456 } 1457 } 1458 1459 mConfiguredNetworks.remove(netId); 1460 mScanDetailCaches.remove(netId); 1461 1462 writeIpAndProxyConfigurations(); 1463 sendConfiguredNetworksChangedBroadcast(config, WifiManager.CHANGE_REASON_REMOVED); 1464 writeKnownNetworkHistory(true); 1465 } 1466 return true; 1467 } 1468 1469 /* 1470 * Remove all networks associated with an application 1471 * 1472 * @param packageName name of the package of networks to remove 1473 * @return {@code true} if all networks removed successfully, {@code false} otherwise 1474 */ 1475 boolean removeNetworksForApp(ApplicationInfo app) { 1476 if (app == null || app.packageName == null) { 1477 return false; 1478 } 1479 1480 boolean success = true; 1481 1482 WifiConfiguration [] copiedConfigs = 1483 mConfiguredNetworks.values().toArray(new WifiConfiguration[0]); 1484 for (WifiConfiguration config : copiedConfigs) { 1485 if (app.uid != config.creatorUid || !app.packageName.equals(config.creatorName)) { 1486 continue; 1487 } 1488 if (showNetworks) { 1489 localLog("Removing network " + config.SSID 1490 + ", application \"" + app.packageName + "\" uninstalled" 1491 + " from user " + UserHandle.getUserId(app.uid)); 1492 } 1493 success &= removeNetwork(config.networkId); 1494 } 1495 1496 mWifiNative.saveConfig(); 1497 1498 return success; 1499 } 1500 1501 boolean removeNetworksForUser(int userId) { 1502 boolean success = true; 1503 1504 WifiConfiguration[] copiedConfigs = 1505 mConfiguredNetworks.values().toArray(new WifiConfiguration[0]); 1506 for (WifiConfiguration config : copiedConfigs) { 1507 if (userId != UserHandle.getUserId(config.creatorUid)) { 1508 continue; 1509 } 1510 success &= removeNetwork(config.networkId); 1511 if (showNetworks) { 1512 localLog("Removing network " + config.SSID 1513 + ", user " + userId + " removed"); 1514 } 1515 } 1516 1517 return success; 1518 } 1519 1520 /** 1521 * Enable a network. Note that there is no saveConfig operation. 1522 * This function is retained for compatibility with the public 1523 * API. The more powerful selectNetwork()/saveNetwork() is used by the 1524 * state machine for connecting to a network 1525 * 1526 * @param netId network to be enabled 1527 * @return {@code true} if it succeeds, {@code false} otherwise 1528 */ 1529 boolean enableNetwork(int netId, boolean disableOthers, int uid) { 1530 boolean ret = enableNetworkWithoutBroadcast(netId, disableOthers); 1531 if (disableOthers) { 1532 if (VDBG) localLog("enableNetwork(disableOthers=true, uid=" + uid + ") ", netId); 1533 updateLastConnectUid(getWifiConfiguration(netId), uid); 1534 writeKnownNetworkHistory(false); 1535 sendConfiguredNetworksChangedBroadcast(); 1536 } else { 1537 if (VDBG) localLog("enableNetwork(disableOthers=false) ", netId); 1538 WifiConfiguration enabledNetwork; 1539 synchronized(mConfiguredNetworks) { // !!! Useless synchronization! 1540 enabledNetwork = mConfiguredNetworks.get(netId); 1541 } 1542 // check just in case the network was removed by someone else. 1543 if (enabledNetwork != null) { 1544 sendConfiguredNetworksChangedBroadcast(enabledNetwork, 1545 WifiManager.CHANGE_REASON_CONFIG_CHANGE); 1546 } 1547 } 1548 return ret; 1549 } 1550 1551 boolean enableNetworkWithoutBroadcast(int netId, boolean disableOthers) { 1552 boolean ret = mWifiNative.enableNetwork(netId, disableOthers); 1553 1554 WifiConfiguration config = mConfiguredNetworks.get(netId); 1555 if (config != null) config.status = Status.ENABLED; 1556 1557 if (disableOthers) { 1558 markAllNetworksDisabledExcept(netId); 1559 } 1560 return ret; 1561 } 1562 1563 void disableAllNetworks() { 1564 if (VDBG) localLog("disableAllNetworks"); 1565 boolean networkDisabled = false; 1566 for (WifiConfiguration enabled : mConfiguredNetworks.getEnabledNetworks()) { 1567 if(mWifiNative.disableNetwork(enabled.networkId)) { 1568 networkDisabled = true; 1569 enabled.status = Status.DISABLED; 1570 } else { 1571 loge("Disable network failed on " + enabled.networkId); 1572 } 1573 } 1574 1575 if (networkDisabled) { 1576 sendConfiguredNetworksChangedBroadcast(); 1577 } 1578 } 1579 /** 1580 * Disable a network. Note that there is no saveConfig operation. 1581 * @param netId network to be disabled 1582 * @return {@code true} if it succeeds, {@code false} otherwise 1583 */ 1584 boolean disableNetwork(int netId) { 1585 boolean ret = disableNetwork(netId, WifiConfiguration.DISABLED_UNKNOWN_REASON); 1586 if (ret) { 1587 mWifiStateMachine.registerNetworkDisabled(netId); 1588 } 1589 return ret; 1590 } 1591 1592 /** 1593 * Disable a network. Note that there is no saveConfig operation. 1594 * @param netId network to be disabled 1595 * @param reason reason code network was disabled 1596 * @return {@code true} if it succeeds, {@code false} otherwise 1597 */ 1598 boolean disableNetwork(int netId, int reason) { 1599 if (VDBG) localLog("disableNetwork", netId); 1600 boolean ret = mWifiNative.disableNetwork(netId); 1601 WifiConfiguration network = null; 1602 WifiConfiguration config = mConfiguredNetworks.get(netId); 1603 1604 if (VDBG) { 1605 if (config != null) { 1606 loge("disableNetwork netId=" + Integer.toString(netId) 1607 + " SSID=" + config.SSID 1608 + " disabled=" + (config.status == Status.DISABLED) 1609 + " reason=" + Integer.toString(config.disableReason)); 1610 } 1611 } 1612 /* Only change the reason if the network was not previously disabled 1613 /* and the reason is not DISABLED_BY_WIFI_MANAGER, that is, if a 3rd party 1614 * set its configuration as disabled, then leave it disabled */ 1615 if (config != null) { 1616 if (config.status != Status.DISABLED 1617 && config.disableReason != WifiConfiguration.DISABLED_BY_WIFI_MANAGER) { 1618 config.status = Status.DISABLED; 1619 config.disableReason = reason; 1620 network = config; 1621 } 1622 if (reason == WifiConfiguration.DISABLED_BY_WIFI_MANAGER) { 1623 // Make sure autojoin wont reenable this configuration without further user 1624 // intervention 1625 config.status = Status.DISABLED; 1626 config.autoJoinStatus = WifiConfiguration.AUTO_JOIN_DISABLED_USER_ACTION; 1627 } 1628 } 1629 if (network != null) { 1630 sendConfiguredNetworksChangedBroadcast(network, 1631 WifiManager.CHANGE_REASON_CONFIG_CHANGE); 1632 } 1633 return ret; 1634 } 1635 1636 /** 1637 * Save the configured networks in supplicant to disk 1638 * @return {@code true} if it succeeds, {@code false} otherwise 1639 */ 1640 boolean saveConfig() { 1641 return mWifiNative.saveConfig(); 1642 } 1643 1644 /** 1645 * Start WPS pin method configuration with pin obtained 1646 * from the access point 1647 * @param config WPS configuration 1648 * @return Wps result containing status and pin 1649 */ 1650 WpsResult startWpsWithPinFromAccessPoint(WpsInfo config) { 1651 WpsResult result = new WpsResult(); 1652 if (mWifiNative.startWpsRegistrar(config.BSSID, config.pin)) { 1653 /* WPS leaves all networks disabled */ 1654 markAllNetworksDisabled(); 1655 result.status = WpsResult.Status.SUCCESS; 1656 } else { 1657 loge("Failed to start WPS pin method configuration"); 1658 result.status = WpsResult.Status.FAILURE; 1659 } 1660 return result; 1661 } 1662 1663 /** 1664 * Start WPS pin method configuration with pin obtained 1665 * from the device 1666 * @return WpsResult indicating status and pin 1667 */ 1668 WpsResult startWpsWithPinFromDevice(WpsInfo config) { 1669 WpsResult result = new WpsResult(); 1670 result.pin = mWifiNative.startWpsPinDisplay(config.BSSID); 1671 /* WPS leaves all networks disabled */ 1672 if (!TextUtils.isEmpty(result.pin)) { 1673 markAllNetworksDisabled(); 1674 result.status = WpsResult.Status.SUCCESS; 1675 } else { 1676 loge("Failed to start WPS pin method configuration"); 1677 result.status = WpsResult.Status.FAILURE; 1678 } 1679 return result; 1680 } 1681 1682 /** 1683 * Start WPS push button configuration 1684 * @param config WPS configuration 1685 * @return WpsResult indicating status and pin 1686 */ 1687 WpsResult startWpsPbc(WpsInfo config) { 1688 WpsResult result = new WpsResult(); 1689 if (mWifiNative.startWpsPbc(config.BSSID)) { 1690 /* WPS leaves all networks disabled */ 1691 markAllNetworksDisabled(); 1692 result.status = WpsResult.Status.SUCCESS; 1693 } else { 1694 loge("Failed to start WPS push button configuration"); 1695 result.status = WpsResult.Status.FAILURE; 1696 } 1697 return result; 1698 } 1699 1700 /** 1701 * Fetch the static IP configuration for a given network id 1702 */ 1703 StaticIpConfiguration getStaticIpConfiguration(int netId) { 1704 WifiConfiguration config = mConfiguredNetworks.get(netId); 1705 if (config != null) { 1706 return config.getStaticIpConfiguration(); 1707 } 1708 return null; 1709 } 1710 1711 /** 1712 * Set the static IP configuration for a given network id 1713 */ 1714 void setStaticIpConfiguration(int netId, StaticIpConfiguration staticIpConfiguration) { 1715 WifiConfiguration config = mConfiguredNetworks.get(netId); 1716 if (config != null) { 1717 config.setStaticIpConfiguration(staticIpConfiguration); 1718 } 1719 } 1720 1721 /** 1722 * set default GW MAC address 1723 */ 1724 void setDefaultGwMacAddress(int netId, String macAddress) { 1725 WifiConfiguration config = mConfiguredNetworks.get(netId); 1726 if (config != null) { 1727 //update defaultGwMacAddress 1728 config.defaultGwMacAddress = macAddress; 1729 } 1730 } 1731 1732 1733 /** 1734 * Fetch the proxy properties for a given network id 1735 * @param netId id 1736 * @return ProxyInfo for the network id 1737 */ 1738 ProxyInfo getProxyProperties(int netId) { 1739 WifiConfiguration config = mConfiguredNetworks.get(netId); 1740 if (config != null) { 1741 return config.getHttpProxy(); 1742 } 1743 return null; 1744 } 1745 1746 /** 1747 * Return if the specified network is using static IP 1748 * @param netId id 1749 * @return {@code true} if using static ip for netId 1750 */ 1751 boolean isUsingStaticIp(int netId) { 1752 WifiConfiguration config = mConfiguredNetworks.get(netId); 1753 if (config != null && config.getIpAssignment() == IpAssignment.STATIC) { 1754 return true; 1755 } 1756 return false; 1757 } 1758 1759 boolean isEphemeral(int netId) { 1760 WifiConfiguration config = mConfiguredNetworks.get(netId); 1761 return config != null && config.ephemeral; 1762 } 1763 1764 /** 1765 * Should be called when a single network configuration is made. 1766 * @param network The network configuration that changed. 1767 * @param reason The reason for the change, should be one of WifiManager.CHANGE_REASON_ADDED, 1768 * WifiManager.CHANGE_REASON_REMOVED, or WifiManager.CHANGE_REASON_CHANGE. 1769 */ 1770 private void sendConfiguredNetworksChangedBroadcast(WifiConfiguration network, 1771 int reason) { 1772 Intent intent = new Intent(WifiManager.CONFIGURED_NETWORKS_CHANGED_ACTION); 1773 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1774 intent.putExtra(WifiManager.EXTRA_MULTIPLE_NETWORKS_CHANGED, false); 1775 intent.putExtra(WifiManager.EXTRA_WIFI_CONFIGURATION, network); 1776 intent.putExtra(WifiManager.EXTRA_CHANGE_REASON, reason); 1777 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1778 } 1779 1780 /** 1781 * Should be called when multiple network configuration changes are made. 1782 */ 1783 private void sendConfiguredNetworksChangedBroadcast() { 1784 Intent intent = new Intent(WifiManager.CONFIGURED_NETWORKS_CHANGED_ACTION); 1785 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1786 intent.putExtra(WifiManager.EXTRA_MULTIPLE_NETWORKS_CHANGED, true); 1787 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1788 } 1789 1790 void loadConfiguredNetworks() { 1791 1792 mLastPriority = 0; 1793 1794 mConfiguredNetworks.clear(); 1795 1796 int last_id = -1; 1797 boolean done = false; 1798 while (!done) { 1799 1800 String listStr = mWifiNative.listNetworks(last_id); 1801 if (listStr == null) 1802 return; 1803 1804 String[] lines = listStr.split("\n"); 1805 1806 if (showNetworks) { 1807 localLog("WifiConfigStore: loadConfiguredNetworks: "); 1808 for (String net : lines) { 1809 localLog(net); 1810 } 1811 } 1812 1813 // Skip the first line, which is a header 1814 for (int i = 1; i < lines.length; i++) { 1815 String[] result = lines[i].split("\t"); 1816 // network-id | ssid | bssid | flags 1817 WifiConfiguration config = new WifiConfiguration(); 1818 try { 1819 config.networkId = Integer.parseInt(result[0]); 1820 last_id = config.networkId; 1821 } catch(NumberFormatException e) { 1822 loge("Failed to read network-id '" + result[0] + "'"); 1823 continue; 1824 } 1825 if (result.length > 3) { 1826 if (result[3].indexOf("[CURRENT]") != -1) 1827 config.status = WifiConfiguration.Status.CURRENT; 1828 else if (result[3].indexOf("[DISABLED]") != -1) 1829 config.status = WifiConfiguration.Status.DISABLED; 1830 else 1831 config.status = WifiConfiguration.Status.ENABLED; 1832 } else { 1833 config.status = WifiConfiguration.Status.ENABLED; 1834 } 1835 1836 readNetworkVariables(config); 1837 1838 Checksum csum = new CRC32(); 1839 if (config.SSID != null) { 1840 csum.update(config.SSID.getBytes(), 0, config.SSID.getBytes().length); 1841 long d = csum.getValue(); 1842 if (mDeletedSSIDs.contains(d)) { 1843 loge(" got CRC for SSID " + config.SSID + " -> " + d + ", was deleted"); 1844 } 1845 } 1846 1847 if (config.priority > mLastPriority) { 1848 mLastPriority = config.priority; 1849 } 1850 1851 config.setIpAssignment(IpAssignment.DHCP); 1852 config.setProxySettings(ProxySettings.NONE); 1853 1854 if (mConfiguredNetworks.getByConfigKey(config.configKey()) != null) { 1855 // That SSID is already known, just ignore this duplicate entry 1856 if (showNetworks) localLog("discarded duplicate network ", config.networkId); 1857 } else if(WifiServiceImpl.isValid(config)){ 1858 mConfiguredNetworks.put(config.networkId, config); 1859 if (showNetworks) localLog("loaded configured network", config.networkId); 1860 } else { 1861 if (showNetworks) log("Ignoring loaded configured for network " + config.networkId 1862 + " because config are not valid"); 1863 } 1864 } 1865 1866 done = (lines.length == 1); 1867 } 1868 1869 readPasspointConfig(); 1870 readIpAndProxyConfigurations(); 1871 readNetworkHistory(); 1872 readAutoJoinConfig(); 1873 1874 buildPnoList(); 1875 1876 sendConfiguredNetworksChangedBroadcast(); 1877 1878 if (showNetworks) localLog("loadConfiguredNetworks loaded " + mConfiguredNetworks.size() + " networks"); 1879 1880 if (mConfiguredNetworks.isEmpty()) { 1881 // no networks? Lets log if the file contents 1882 logKernelTime(); 1883 logContents(SUPPLICANT_CONFIG_FILE); 1884 logContents(SUPPLICANT_CONFIG_FILE_BACKUP); 1885 logContents(networkHistoryConfigFile); 1886 } 1887 } 1888 1889 private void logContents(String file) { 1890 localLog("--- Begin " + file + " ---", true); 1891 BufferedReader reader = null; 1892 try { 1893 reader = new BufferedReader(new FileReader(file)); 1894 for (String line = reader.readLine(); line != null; line = reader.readLine()) { 1895 localLog(line, true); 1896 } 1897 } catch (FileNotFoundException e) { 1898 localLog("Could not open " + file + ", " + e, true); 1899 } catch (IOException e) { 1900 localLog("Could not read " + file + ", " + e, true); 1901 } finally { 1902 try { 1903 if (reader != null) { 1904 reader.close(); 1905 } 1906 } catch (IOException e) { 1907 // Just ignore the fact that we couldn't close 1908 } 1909 } 1910 localLog("--- End " + file + " Contents ---", true); 1911 } 1912 1913 private Map<String, String> readNetworkVariablesFromSupplicantFile(String key) { 1914 Map<String, String> result = new HashMap<>(); 1915 BufferedReader reader = null; 1916 if (VDBG) loge("readNetworkVariablesFromSupplicantFile key=" + key); 1917 1918 try { 1919 reader = new BufferedReader(new FileReader(SUPPLICANT_CONFIG_FILE)); 1920 boolean found = false; 1921 String networkSsid = null; 1922 String value = null; 1923 1924 for (String line = reader.readLine(); line != null; line = reader.readLine()) { 1925 1926 if (line.matches("[ \\t]*network=\\{")) { 1927 found = true; 1928 networkSsid = null; 1929 value = null; 1930 } else if (line.matches("[ \\t]*\\}")) { 1931 found = false; 1932 networkSsid = null; 1933 value = null; 1934 } 1935 1936 if (found) { 1937 String trimmedLine = line.trim(); 1938 if (trimmedLine.startsWith("ssid=")) { 1939 networkSsid = trimmedLine.substring(5); 1940 } else if (trimmedLine.startsWith(key + "=")) { 1941 value = trimmedLine.substring(key.length() + 1); 1942 } 1943 1944 if (networkSsid != null && value != null) { 1945 result.put(networkSsid, value); 1946 } 1947 } 1948 } 1949 } catch (FileNotFoundException e) { 1950 if (VDBG) loge("Could not open " + SUPPLICANT_CONFIG_FILE + ", " + e); 1951 } catch (IOException e) { 1952 if (VDBG) loge("Could not read " + SUPPLICANT_CONFIG_FILE + ", " + e); 1953 } finally { 1954 try { 1955 if (reader != null) { 1956 reader.close(); 1957 } 1958 } catch (IOException e) { 1959 // Just ignore the fact that we couldn't close 1960 } 1961 } 1962 1963 return result; 1964 } 1965 1966 private String readNetworkVariableFromSupplicantFile(String ssid, String key) { 1967 long start = SystemClock.elapsedRealtimeNanos(); 1968 Map<String, String> data = readNetworkVariablesFromSupplicantFile(key); 1969 long end = SystemClock.elapsedRealtimeNanos(); 1970 1971 if (VDBG) { 1972 loge("readNetworkVariableFromSupplicantFile ssid=[" + ssid + "] key=" + key 1973 + " duration=" + (long)(end - start)); 1974 } 1975 return data.get(ssid); 1976 } 1977 1978 /* Mark all networks except specified netId as disabled */ 1979 private void markAllNetworksDisabledExcept(int netId) { 1980 for(WifiConfiguration config : mConfiguredNetworks.values()) { 1981 if(config != null && config.networkId != netId) { 1982 if (config.status != Status.DISABLED) { 1983 config.status = Status.DISABLED; 1984 config.disableReason = WifiConfiguration.DISABLED_UNKNOWN_REASON; 1985 } 1986 } 1987 } 1988 } 1989 1990 private void markAllNetworksDisabled() { 1991 markAllNetworksDisabledExcept(INVALID_NETWORK_ID); 1992 } 1993 1994 boolean needsUnlockedKeyStore() { 1995 1996 // Any network using certificates to authenticate access requires 1997 // unlocked key store; unless the certificates can be stored with 1998 // hardware encryption 1999 2000 for(WifiConfiguration config : mConfiguredNetworks.values()) { 2001 2002 if (config.allowedKeyManagement.get(KeyMgmt.WPA_EAP) 2003 && config.allowedKeyManagement.get(KeyMgmt.IEEE8021X)) { 2004 2005 if (needsSoftwareBackedKeyStore(config.enterpriseConfig)) { 2006 return true; 2007 } 2008 } 2009 } 2010 2011 return false; 2012 } 2013 2014 void readPasspointConfig() { 2015 2016 List<HomeSP> homeSPs; 2017 try { 2018 homeSPs = mMOManager.loadAllSPs(); 2019 } catch (IOException e) { 2020 loge("Could not read " + PPS_FILE + " : " + e); 2021 return; 2022 } 2023 2024 mConfiguredNetworks.populatePasspointData(homeSPs, mWifiNative); 2025 } 2026 2027 public void writePasspointConfigs(final String fqdn, final HomeSP homeSP) { 2028 mWriter.write(PPS_FILE, new DelayedDiskWrite.Writer() { 2029 @Override 2030 public void onWriteCalled(DataOutputStream out) throws IOException { 2031 try { 2032 if (homeSP != null) { 2033 mMOManager.addSP(homeSP); 2034 } 2035 else { 2036 mMOManager.removeSP(fqdn); 2037 } 2038 } catch (IOException e) { 2039 loge("Could not write " + PPS_FILE + " : " + e); 2040 } 2041 } 2042 }, false); 2043 } 2044 2045 public void writeKnownNetworkHistory(boolean force) { 2046 boolean needUpdate = force; 2047 2048 /* Make a copy */ 2049 final List<WifiConfiguration> networks = new ArrayList<WifiConfiguration>(); 2050 for (WifiConfiguration config : mConfiguredNetworks.values()) { 2051 networks.add(new WifiConfiguration(config)); 2052 if (config.dirty == true) { 2053 loge(" rewrite network history for " + config.configKey()); 2054 config.dirty = false; 2055 needUpdate = true; 2056 } 2057 } 2058 if (VDBG) { 2059 loge(" writeKnownNetworkHistory() num networks:" + 2060 mConfiguredNetworks.size() + " needWrite=" + needUpdate); 2061 } 2062 if (needUpdate == false) { 2063 return; 2064 } 2065 mWriter.write(networkHistoryConfigFile, new DelayedDiskWrite.Writer() { 2066 public void onWriteCalled(DataOutputStream out) throws IOException { 2067 for (WifiConfiguration config : networks) { 2068 //loge("onWriteCalled write SSID: " + config.SSID); 2069 /* if (config.getLinkProperties() != null) 2070 loge(" lp " + config.getLinkProperties().toString()); 2071 else 2072 loge("attempt config w/o lp"); 2073 */ 2074 2075 if (VDBG) { 2076 int num = 0; 2077 int numlink = 0; 2078 if (config.connectChoices != null) { 2079 num = config.connectChoices.size(); 2080 } 2081 if (config.linkedConfigurations != null) { 2082 numlink = config.linkedConfigurations.size(); 2083 } 2084 loge("saving network history: " + config.configKey() + " gw: " + 2085 config.defaultGwMacAddress + " autojoin-status: " + 2086 config.autoJoinStatus + " ephemeral=" + config.ephemeral 2087 + " choices:" + Integer.toString(num) 2088 + " link:" + Integer.toString(numlink) 2089 + " status:" + Integer.toString(config.status) 2090 + " nid:" + Integer.toString(config.networkId)); 2091 } 2092 2093 if (!WifiServiceImpl.isValid(config)) 2094 continue; 2095 2096 if (config.SSID == null) { 2097 if (VDBG) { 2098 loge("writeKnownNetworkHistory trying to write config with null SSID"); 2099 } 2100 continue; 2101 } 2102 if (VDBG) { 2103 loge("writeKnownNetworkHistory write config " + config.configKey()); 2104 } 2105 out.writeUTF(CONFIG_KEY + SEPARATOR + config.configKey() + NL); 2106 2107 if (config.SSID != null) { 2108 out.writeUTF(SSID_KEY + SEPARATOR + config.SSID + NL); 2109 } 2110 if (config.FQDN != null) { 2111 out.writeUTF(FQDN_KEY + SEPARATOR + config.FQDN + NL); 2112 } 2113 2114 out.writeUTF(PRIORITY_KEY + SEPARATOR + 2115 Integer.toString(config.priority) + NL); 2116 out.writeUTF(STATUS_KEY + SEPARATOR + 2117 Integer.toString(config.autoJoinStatus) + NL); 2118 out.writeUTF(SUPPLICANT_STATUS_KEY + SEPARATOR + 2119 Integer.toString(config.status) + NL); 2120 out.writeUTF(SUPPLICANT_DISABLE_REASON_KEY + SEPARATOR + 2121 Integer.toString(config.disableReason) + NL); 2122 out.writeUTF(NETWORK_ID_KEY + SEPARATOR + 2123 Integer.toString(config.networkId) + NL); 2124 out.writeUTF(SELF_ADDED_KEY + SEPARATOR + 2125 Boolean.toString(config.selfAdded) + NL); 2126 out.writeUTF(DID_SELF_ADD_KEY + SEPARATOR + 2127 Boolean.toString(config.didSelfAdd) + NL); 2128 out.writeUTF(NO_INTERNET_ACCESS_REPORTS_KEY + SEPARATOR + 2129 Integer.toString(config.numNoInternetAccessReports) + NL); 2130 out.writeUTF(VALIDATED_INTERNET_ACCESS_KEY + SEPARATOR + 2131 Boolean.toString(config.validatedInternetAccess) + NL); 2132 out.writeUTF(EPHEMERAL_KEY + SEPARATOR + 2133 Boolean.toString(config.ephemeral) + NL); 2134 if (config.creationTime != null) { 2135 out.writeUTF(CREATION_TIME_KEY + SEPARATOR + config.creationTime + NL); 2136 } 2137 if (config.updateTime != null) { 2138 out.writeUTF(UPDATE_TIME_KEY + SEPARATOR + config.updateTime + NL); 2139 } 2140 if (config.peerWifiConfiguration != null) { 2141 out.writeUTF(PEER_CONFIGURATION_KEY + SEPARATOR + 2142 config.peerWifiConfiguration + NL); 2143 } 2144 out.writeUTF(NUM_CONNECTION_FAILURES_KEY + SEPARATOR + 2145 Integer.toString(config.numConnectionFailures) + NL); 2146 out.writeUTF(NUM_AUTH_FAILURES_KEY + SEPARATOR + 2147 Integer.toString(config.numAuthFailures) + NL); 2148 out.writeUTF(NUM_IP_CONFIG_FAILURES_KEY + SEPARATOR + 2149 Integer.toString(config.numIpConfigFailures) + NL); 2150 out.writeUTF(SCORER_OVERRIDE_KEY + SEPARATOR + 2151 Integer.toString(config.numScorerOverride) + NL); 2152 out.writeUTF(SCORER_OVERRIDE_AND_SWITCH_KEY + SEPARATOR + 2153 Integer.toString(config.numScorerOverrideAndSwitchedNetwork) + NL); 2154 out.writeUTF(NUM_ASSOCIATION_KEY + SEPARATOR + 2155 Integer.toString(config.numAssociation) + NL); 2156 out.writeUTF(JOIN_ATTEMPT_BOOST_KEY + SEPARATOR + 2157 Integer.toString(config.autoJoinUseAggressiveJoinAttemptThreshold)+ NL); 2158 //out.writeUTF(BLACKLIST_MILLI_KEY + SEPARATOR + 2159 // Long.toString(config.blackListTimestamp) + NL); 2160 out.writeUTF(CREATOR_UID_KEY + SEPARATOR + 2161 Integer.toString(config.creatorUid) + NL); 2162 out.writeUTF(CONNECT_UID_KEY + SEPARATOR + 2163 Integer.toString(config.lastConnectUid) + NL); 2164 out.writeUTF(UPDATE_UID_KEY + SEPARATOR + 2165 Integer.toString(config.lastUpdateUid) + NL); 2166 out.writeUTF(CREATOR_NAME_KEY + SEPARATOR + 2167 config.creatorName + NL); 2168 out.writeUTF(UPDATE_NAME_KEY + SEPARATOR + 2169 config.lastUpdateName + NL); 2170 out.writeUTF(USER_APPROVED_KEY + SEPARATOR + 2171 Integer.toString(config.userApproved) + NL); 2172 String allowedKeyManagementString = 2173 makeString(config.allowedKeyManagement, 2174 WifiConfiguration.KeyMgmt.strings); 2175 out.writeUTF(AUTH_KEY + SEPARATOR + 2176 allowedKeyManagementString + NL); 2177 2178 if (config.connectChoices != null) { 2179 for (String key : config.connectChoices.keySet()) { 2180 Integer choice = config.connectChoices.get(key); 2181 out.writeUTF(CHOICE_KEY + SEPARATOR + 2182 key + "=" + choice.toString() + NL); 2183 } 2184 } 2185 if (config.linkedConfigurations != null) { 2186 loge("writeKnownNetworkHistory write linked " 2187 + config.linkedConfigurations.size()); 2188 2189 for (String key : config.linkedConfigurations.keySet()) { 2190 out.writeUTF(LINK_KEY + SEPARATOR + key + NL); 2191 } 2192 } 2193 2194 String macAddress = config.defaultGwMacAddress; 2195 if (macAddress != null) { 2196 out.writeUTF(DEFAULT_GW_KEY + SEPARATOR + macAddress + NL); 2197 } 2198 2199 if (getScanDetailCache(config) != null) { 2200 for (ScanDetail scanDetail : getScanDetailCache(config).values()) { 2201 ScanResult result = scanDetail.getScanResult(); 2202 out.writeUTF(BSSID_KEY + SEPARATOR + 2203 result.BSSID + NL); 2204 2205 out.writeUTF(FREQ_KEY + SEPARATOR + 2206 Integer.toString(result.frequency) + NL); 2207 2208 out.writeUTF(RSSI_KEY + SEPARATOR + 2209 Integer.toString(result.level) + NL); 2210 2211 out.writeUTF(BSSID_STATUS_KEY + SEPARATOR + 2212 Integer.toString(result.autoJoinStatus) + NL); 2213 2214 //if (result.seen != 0) { 2215 // out.writeUTF(MILLI_KEY + SEPARATOR + Long.toString(result.seen) 2216 // + NL); 2217 //} 2218 out.writeUTF(BSSID_KEY_END + NL); 2219 } 2220 } 2221 if (config.lastFailure != null) { 2222 out.writeUTF(FAILURE_KEY + SEPARATOR + config.lastFailure + NL); 2223 } 2224 out.writeUTF(NL); 2225 // Add extra blank lines for clarity 2226 out.writeUTF(NL); 2227 out.writeUTF(NL); 2228 } 2229 if (mDeletedSSIDs != null && mDeletedSSIDs.size() > 0) { 2230 for (Long i : mDeletedSSIDs) { 2231 out.writeUTF(DELETED_CRC32_KEY); 2232 out.writeUTF(String.valueOf(i)); 2233 out.writeUTF(NL); 2234 } 2235 } 2236 if (mDeletedEphemeralSSIDs != null && mDeletedEphemeralSSIDs.size() > 0) { 2237 for (String ssid : mDeletedEphemeralSSIDs) { 2238 out.writeUTF(DELETED_EPHEMERAL_KEY); 2239 out.writeUTF(ssid); 2240 out.writeUTF(NL); 2241 } 2242 } 2243 } 2244 }); 2245 } 2246 2247 public void setLastSelectedConfiguration(int netId) { 2248 if (VDBG) { 2249 loge("setLastSelectedConfiguration " + Integer.toString(netId)); 2250 } 2251 if (netId == WifiConfiguration.INVALID_NETWORK_ID) { 2252 lastSelectedConfiguration = null; 2253 } else { 2254 WifiConfiguration selected = getWifiConfiguration(netId); 2255 if (selected == null) { 2256 lastSelectedConfiguration = null; 2257 } else { 2258 lastSelectedConfiguration = selected.configKey(); 2259 selected.numConnectionFailures = 0; 2260 selected.numIpConfigFailures = 0; 2261 selected.numAuthFailures = 0; 2262 selected.numNoInternetAccessReports = 0; 2263 if (VDBG) { 2264 loge("setLastSelectedConfiguration now: " + lastSelectedConfiguration); 2265 } 2266 } 2267 } 2268 } 2269 2270 public String getLastSelectedConfiguration() { 2271 return lastSelectedConfiguration; 2272 } 2273 2274 public boolean isLastSelectedConfiguration(WifiConfiguration config) { 2275 return (lastSelectedConfiguration != null 2276 && config != null 2277 && lastSelectedConfiguration.equals(config.configKey())); 2278 } 2279 2280 private void readNetworkHistory() { 2281 if (showNetworks) { 2282 localLog("readNetworkHistory() path:" + networkHistoryConfigFile); 2283 } 2284 2285 try (DataInputStream in = 2286 new DataInputStream(new BufferedInputStream( 2287 new FileInputStream(networkHistoryConfigFile)))) { 2288 2289 String bssid = null; 2290 String ssid = null; 2291 2292 int freq = 0; 2293 int status = 0; 2294 long seen = 0; 2295 int rssi = WifiConfiguration.INVALID_RSSI; 2296 String caps = null; 2297 2298 WifiConfiguration config = null; 2299 while (true) { 2300 String line = in.readUTF(); 2301 if (line == null) { 2302 break; 2303 } 2304 int colon = line.indexOf(':'); 2305 if (colon < 0) { 2306 continue; 2307 } 2308 2309 String key = line.substring(0, colon).trim(); 2310 String value = line.substring(colon + 1).trim(); 2311 2312 if (key.equals(CONFIG_KEY)) { 2313 2314 config = mConfiguredNetworks.getByConfigKey(value); 2315 2316 // skip reading that configuration data 2317 // since we don't have a corresponding network ID 2318 if (config == null) { 2319 localLog("readNetworkHistory didnt find netid for hash=" 2320 + Integer.toString(value.hashCode()) 2321 + " key: " + value); 2322 mLostConfigsDbg.add(value); 2323 continue; 2324 } else { 2325 // After an upgrade count old connections as owned by system 2326 if (config.creatorName == null || config.lastUpdateName == null) { 2327 config.creatorName = 2328 mContext.getPackageManager().getNameForUid(Process.SYSTEM_UID); 2329 config.lastUpdateName = config.creatorName; 2330 2331 if (DBG) Log.w(TAG, "Upgrading network " + config.networkId 2332 + " to " + config.creatorName); 2333 } 2334 } 2335 } else if (config != null) { 2336 switch (key) { 2337 case SSID_KEY: 2338 ssid = value; 2339 if (config.SSID != null && !config.SSID.equals(ssid)) { 2340 loge("Error parsing network history file, mismatched SSIDs"); 2341 config = null; //error 2342 ssid = null; 2343 } else { 2344 config.SSID = ssid; 2345 } 2346 break; 2347 case FQDN_KEY: 2348 // Check for literal 'null' to be backwards compatible. 2349 config.FQDN = value.equals("null") ? null : value; 2350 break; 2351 case DEFAULT_GW_KEY: 2352 config.defaultGwMacAddress = value; 2353 break; 2354 case STATUS_KEY: 2355 config.autoJoinStatus = Integer.parseInt(value); 2356 break; 2357 case SUPPLICANT_DISABLE_REASON_KEY: 2358 config.disableReason = Integer.parseInt(value); 2359 break; 2360 case SELF_ADDED_KEY: 2361 config.selfAdded = Boolean.parseBoolean(value); 2362 break; 2363 case DID_SELF_ADD_KEY: 2364 config.didSelfAdd = Boolean.parseBoolean(value); 2365 break; 2366 case NO_INTERNET_ACCESS_REPORTS_KEY: 2367 config.numNoInternetAccessReports = Integer.parseInt(value); 2368 break; 2369 case VALIDATED_INTERNET_ACCESS_KEY: 2370 config.validatedInternetAccess = Boolean.parseBoolean(value); 2371 break; 2372 case CREATION_TIME_KEY: 2373 config.creationTime = value; 2374 break; 2375 case UPDATE_TIME_KEY: 2376 config.updateTime = value; 2377 break; 2378 case EPHEMERAL_KEY: 2379 config.ephemeral = Boolean.parseBoolean(value); 2380 break; 2381 case CREATOR_UID_KEY: 2382 config.creatorUid = Integer.parseInt(value); 2383 break; 2384 case BLACKLIST_MILLI_KEY: 2385 config.blackListTimestamp = Long.parseLong(value); 2386 break; 2387 case NUM_CONNECTION_FAILURES_KEY: 2388 config.numConnectionFailures = Integer.parseInt(value); 2389 break; 2390 case NUM_IP_CONFIG_FAILURES_KEY: 2391 config.numIpConfigFailures = Integer.parseInt(value); 2392 break; 2393 case NUM_AUTH_FAILURES_KEY: 2394 config.numIpConfigFailures = Integer.parseInt(value); 2395 break; 2396 case SCORER_OVERRIDE_KEY: 2397 config.numScorerOverride = Integer.parseInt(value); 2398 break; 2399 case SCORER_OVERRIDE_AND_SWITCH_KEY: 2400 config.numScorerOverrideAndSwitchedNetwork = Integer.parseInt(value); 2401 break; 2402 case NUM_ASSOCIATION_KEY: 2403 config.numAssociation = Integer.parseInt(value); 2404 break; 2405 case JOIN_ATTEMPT_BOOST_KEY: 2406 config.autoJoinUseAggressiveJoinAttemptThreshold = 2407 Integer.parseInt(value); 2408 break; 2409 case CONNECT_UID_KEY: 2410 config.lastConnectUid = Integer.parseInt(value); 2411 break; 2412 case UPDATE_UID_KEY: 2413 config.lastUpdateUid = Integer.parseInt(value); 2414 break; 2415 case FAILURE_KEY: 2416 config.lastFailure = value; 2417 break; 2418 case PEER_CONFIGURATION_KEY: 2419 config.peerWifiConfiguration = value; 2420 break; 2421 case CHOICE_KEY: 2422 String configKey = ""; 2423 int choice = 0; 2424 Matcher match = mConnectChoice.matcher(value); 2425 if (!match.find()) { 2426 if (DBG) Log.d(TAG, "WifiConfigStore: connectChoice: " + 2427 " Couldnt match pattern : " + value); 2428 } else { 2429 configKey = match.group(1); 2430 try { 2431 choice = Integer.parseInt(match.group(2)); 2432 } catch (NumberFormatException e) { 2433 choice = 0; 2434 } 2435 if (choice > 0) { 2436 if (config.connectChoices == null) { 2437 config.connectChoices = new HashMap<>(); 2438 } 2439 config.connectChoices.put(configKey, choice); 2440 } 2441 } 2442 break; 2443 case LINK_KEY: 2444 if (config.linkedConfigurations == null) { 2445 config.linkedConfigurations = new HashMap<>(); 2446 } 2447 else { 2448 config.linkedConfigurations.put(value, -1); 2449 } 2450 break; 2451 case BSSID_KEY: 2452 status = 0; 2453 ssid = null; 2454 bssid = null; 2455 freq = 0; 2456 seen = 0; 2457 rssi = WifiConfiguration.INVALID_RSSI; 2458 caps = ""; 2459 break; 2460 case RSSI_KEY: 2461 rssi = Integer.parseInt(value); 2462 break; 2463 case BSSID_STATUS_KEY: 2464 status = Integer.parseInt(value); 2465 break; 2466 case FREQ_KEY: 2467 freq = Integer.parseInt(value); 2468 break; 2469 case DATE_KEY: 2470 /* 2471 * when reading the configuration from file we don't update the date 2472 * so as to avoid reading back stale or non-sensical data that would 2473 * depend on network time. 2474 * The date of a WifiConfiguration should only come from actual scan result. 2475 * 2476 String s = key.replace(FREQ_KEY, ""); 2477 seen = Integer.getInteger(s); 2478 */ 2479 break; 2480 case BSSID_KEY_END: 2481 if ((bssid != null) && (ssid != null)) { 2482 2483 if (getScanDetailCache(config) != null) { 2484 WifiSsid wssid = WifiSsid.createFromAsciiEncoded(ssid); 2485 ScanDetail scanDetail = new ScanDetail(wssid, bssid, 2486 caps, rssi, freq, (long) 0, seen); 2487 getScanDetailCache(config).put(scanDetail); 2488 scanDetail.getScanResult().autoJoinStatus = status; 2489 } 2490 } 2491 break; 2492 case DELETED_CRC32_KEY: 2493 mDeletedSSIDs.add(Long.parseLong(value)); 2494 break; 2495 case DELETED_EPHEMERAL_KEY: 2496 if (!TextUtils.isEmpty(value)) { 2497 mDeletedEphemeralSSIDs.add(value); 2498 } 2499 break; 2500 case CREATOR_NAME_KEY: 2501 config.creatorName = value; 2502 break; 2503 case UPDATE_NAME_KEY: 2504 config.lastUpdateName = value; 2505 break; 2506 case USER_APPROVED_KEY: 2507 config.userApproved = Integer.parseInt(value); 2508 break; 2509 } 2510 } 2511 } 2512 } catch (NumberFormatException e) { 2513 Log.e(TAG, "readNetworkHistory: failed to read, revert to default, " + e, e); 2514 } catch (EOFException e) { 2515 // do nothing 2516 } catch (IOException e) { 2517 Log.e(TAG, "readNetworkHistory: No config file, revert to default, " + e, e); 2518 } 2519 } 2520 2521 private void readAutoJoinConfig() { 2522 try (BufferedReader reader = new BufferedReader(new FileReader(autoJoinConfigFile))) { 2523 for (String key = reader.readLine(); key != null; key = reader.readLine()) { 2524 Log.d(TAG, "readAutoJoinConfig line: " + key); 2525 2526 int split = key.indexOf(':'); 2527 if (split < 0) { 2528 continue; 2529 } 2530 2531 String name = key.substring(0, split); 2532 Object reference = sKeyMap.get(name); 2533 if (reference == null) { 2534 continue; 2535 } 2536 2537 try { 2538 int value = Integer.parseInt(key.substring(split+1).trim()); 2539 if (reference.getClass() == AtomicBoolean.class) { 2540 ((AtomicBoolean)reference).set(value != 0); 2541 } 2542 else { 2543 ((AtomicInteger)reference).set(value); 2544 } 2545 Log.d(TAG,"readAutoJoinConfig: " + name + " = " + value); 2546 } 2547 catch (NumberFormatException nfe) { 2548 Log.d(TAG,"readAutoJoinConfig: incorrect format :" + key); 2549 } 2550 } 2551 } catch (IOException e) { 2552 loge("readAutoJoinStatus: Error parsing configuration" + e); 2553 } 2554 } 2555 2556 2557 private void writeIpAndProxyConfigurations() { 2558 final SparseArray<IpConfiguration> networks = new SparseArray<IpConfiguration>(); 2559 for(WifiConfiguration config : mConfiguredNetworks.values()) { 2560 if (!config.ephemeral && config.autoJoinStatus != WifiConfiguration.AUTO_JOIN_DELETED) { 2561 networks.put(configKey(config), config.getIpConfiguration()); 2562 } 2563 } 2564 2565 super.writeIpAndProxyConfigurations(ipConfigFile, networks); 2566 } 2567 2568 private void readIpAndProxyConfigurations() { 2569 SparseArray<IpConfiguration> networks = super.readIpAndProxyConfigurations(ipConfigFile); 2570 2571 if (networks == null || networks.size() == 0) { 2572 // IpConfigStore.readIpAndProxyConfigurations has already logged an error. 2573 return; 2574 } 2575 2576 for (int i = 0; i < networks.size(); i++) { 2577 int id = networks.keyAt(i); 2578 WifiConfiguration config = mConfiguredNetworks.getByConfigKeyID(id); 2579 // This is the only place the map is looked up through a (dangerous) hash-value! 2580 2581 if (config == null || config.autoJoinStatus == WifiConfiguration.AUTO_JOIN_DELETED || 2582 config.ephemeral) { 2583 loge("configuration found for missing network, nid=" + id 2584 +", ignored, networks.size=" + Integer.toString(networks.size())); 2585 } else { 2586 config.setIpConfiguration(networks.valueAt(i)); 2587 } 2588 } 2589 } 2590 2591 /* 2592 * Convert string to Hexadecimal before passing to wifi native layer 2593 * In native function "doCommand()" have trouble in converting Unicode character string to UTF8 2594 * conversion to hex is required because SSIDs can have space characters in them; 2595 * and that can confuses the supplicant because it uses space charaters as delimiters 2596 */ 2597 2598 public static String encodeSSID(String str){ 2599 return Utils.toHex(removeDoubleQuotes(str).getBytes(StandardCharsets.UTF_8)); 2600 } 2601 2602 private NetworkUpdateResult addOrUpdateNetworkNative(WifiConfiguration config, int uid) { 2603 /* 2604 * If the supplied networkId is INVALID_NETWORK_ID, we create a new empty 2605 * network configuration. Otherwise, the networkId should 2606 * refer to an existing configuration. 2607 */ 2608 2609 if (VDBG) localLog("addOrUpdateNetworkNative " + config.getPrintableSsid()); 2610 if (config.isPasspoint() && !mMOManager.isEnabled()) { 2611 Log.e(TAG, "Passpoint is not enabled"); 2612 return new NetworkUpdateResult(INVALID_NETWORK_ID); 2613 } 2614 2615 int netId = config.networkId; 2616 boolean newNetwork = false; 2617 // networkId of INVALID_NETWORK_ID means we want to create a new network 2618 if (netId == INVALID_NETWORK_ID) { 2619 WifiConfiguration savedConfig = mConfiguredNetworks.getByConfigKey(config.configKey()); 2620 if (savedConfig != null) { 2621 netId = savedConfig.networkId; 2622 } else { 2623 if (mMOManager.getHomeSP(config.FQDN) != null) { 2624 loge("addOrUpdateNetworkNative passpoint " + config.FQDN 2625 + " was found, but no network Id"); 2626 } 2627 newNetwork = true; 2628 netId = mWifiNative.addNetwork(); 2629 if (netId < 0) { 2630 loge("Failed to add a network!"); 2631 return new NetworkUpdateResult(INVALID_NETWORK_ID); 2632 } else { 2633 loge("addOrUpdateNetworkNative created netId=" + netId); 2634 } 2635 } 2636 } 2637 2638 boolean updateFailed = true; 2639 2640 setVariables: { 2641 2642 if (config.SSID != null && 2643 !mWifiNative.setNetworkVariable( 2644 netId, 2645 WifiConfiguration.ssidVarName, 2646 encodeSSID(config.SSID))) { 2647 loge("failed to set SSID: "+config.SSID); 2648 break setVariables; 2649 } 2650 2651 if (config.isPasspoint()) { 2652 if (!mWifiNative.setNetworkVariable( 2653 netId, 2654 idStringVarName, 2655 '"' + config.FQDN + '"')) { 2656 loge("failed to set id_str: " + config.FQDN); 2657 break setVariables; 2658 } 2659 } else { 2660 log("Config is : " + config); 2661 } 2662 2663 if (config.BSSID != null) { 2664 log("Setting BSSID for " + config.configKey() + " to " + config.BSSID); 2665 if (!mWifiNative.setNetworkVariable( 2666 netId, 2667 WifiConfiguration.bssidVarName, 2668 config.BSSID)) { 2669 loge("failed to set BSSID: " + config.BSSID); 2670 break setVariables; 2671 } 2672 } 2673 2674 String allowedKeyManagementString = 2675 makeString(config.allowedKeyManagement, WifiConfiguration.KeyMgmt.strings); 2676 if (config.allowedKeyManagement.cardinality() != 0 && 2677 !mWifiNative.setNetworkVariable( 2678 netId, 2679 WifiConfiguration.KeyMgmt.varName, 2680 allowedKeyManagementString)) { 2681 loge("failed to set key_mgmt: "+ 2682 allowedKeyManagementString); 2683 break setVariables; 2684 } 2685 2686 String allowedProtocolsString = 2687 makeString(config.allowedProtocols, WifiConfiguration.Protocol.strings); 2688 if (config.allowedProtocols.cardinality() != 0 && 2689 !mWifiNative.setNetworkVariable( 2690 netId, 2691 WifiConfiguration.Protocol.varName, 2692 allowedProtocolsString)) { 2693 loge("failed to set proto: "+ 2694 allowedProtocolsString); 2695 break setVariables; 2696 } 2697 2698 String allowedAuthAlgorithmsString = 2699 makeString(config.allowedAuthAlgorithms, WifiConfiguration.AuthAlgorithm.strings); 2700 if (config.allowedAuthAlgorithms.cardinality() != 0 && 2701 !mWifiNative.setNetworkVariable( 2702 netId, 2703 WifiConfiguration.AuthAlgorithm.varName, 2704 allowedAuthAlgorithmsString)) { 2705 loge("failed to set auth_alg: "+ 2706 allowedAuthAlgorithmsString); 2707 break setVariables; 2708 } 2709 2710 String allowedPairwiseCiphersString = 2711 makeString(config.allowedPairwiseCiphers, 2712 WifiConfiguration.PairwiseCipher.strings); 2713 if (config.allowedPairwiseCiphers.cardinality() != 0 && 2714 !mWifiNative.setNetworkVariable( 2715 netId, 2716 WifiConfiguration.PairwiseCipher.varName, 2717 allowedPairwiseCiphersString)) { 2718 loge("failed to set pairwise: "+ 2719 allowedPairwiseCiphersString); 2720 break setVariables; 2721 } 2722 2723 String allowedGroupCiphersString = 2724 makeString(config.allowedGroupCiphers, WifiConfiguration.GroupCipher.strings); 2725 if (config.allowedGroupCiphers.cardinality() != 0 && 2726 !mWifiNative.setNetworkVariable( 2727 netId, 2728 WifiConfiguration.GroupCipher.varName, 2729 allowedGroupCiphersString)) { 2730 loge("failed to set group: "+ 2731 allowedGroupCiphersString); 2732 break setVariables; 2733 } 2734 2735 // Prevent client screw-up by passing in a WifiConfiguration we gave it 2736 // by preventing "*" as a key. 2737 if (config.preSharedKey != null && !config.preSharedKey.equals("*") && 2738 !mWifiNative.setNetworkVariable( 2739 netId, 2740 WifiConfiguration.pskVarName, 2741 config.preSharedKey)) { 2742 loge("failed to set psk"); 2743 break setVariables; 2744 } 2745 2746 boolean hasSetKey = false; 2747 if (config.wepKeys != null) { 2748 for (int i = 0; i < config.wepKeys.length; i++) { 2749 // Prevent client screw-up by passing in a WifiConfiguration we gave it 2750 // by preventing "*" as a key. 2751 if (config.wepKeys[i] != null && !config.wepKeys[i].equals("*")) { 2752 if (!mWifiNative.setNetworkVariable( 2753 netId, 2754 WifiConfiguration.wepKeyVarNames[i], 2755 config.wepKeys[i])) { 2756 loge("failed to set wep_key" + i + ": " + config.wepKeys[i]); 2757 break setVariables; 2758 } 2759 hasSetKey = true; 2760 } 2761 } 2762 } 2763 2764 if (hasSetKey) { 2765 if (!mWifiNative.setNetworkVariable( 2766 netId, 2767 WifiConfiguration.wepTxKeyIdxVarName, 2768 Integer.toString(config.wepTxKeyIndex))) { 2769 loge("failed to set wep_tx_keyidx: " + config.wepTxKeyIndex); 2770 break setVariables; 2771 } 2772 } 2773 2774 if (!mWifiNative.setNetworkVariable( 2775 netId, 2776 WifiConfiguration.priorityVarName, 2777 Integer.toString(config.priority))) { 2778 loge(config.SSID + ": failed to set priority: " 2779 +config.priority); 2780 break setVariables; 2781 } 2782 2783 if (config.hiddenSSID && !mWifiNative.setNetworkVariable( 2784 netId, 2785 WifiConfiguration.hiddenSSIDVarName, 2786 Integer.toString(config.hiddenSSID ? 1 : 0))) { 2787 loge(config.SSID + ": failed to set hiddenSSID: "+ 2788 config.hiddenSSID); 2789 break setVariables; 2790 } 2791 2792 if (config.requirePMF && !mWifiNative.setNetworkVariable( 2793 netId, 2794 WifiConfiguration.pmfVarName, 2795 "2")) { 2796 loge(config.SSID + ": failed to set requirePMF: "+ 2797 config.requirePMF); 2798 break setVariables; 2799 } 2800 2801 if (config.updateIdentifier != null && !mWifiNative.setNetworkVariable( 2802 netId, 2803 WifiConfiguration.updateIdentiferVarName, 2804 config.updateIdentifier)) { 2805 loge(config.SSID + ": failed to set updateIdentifier: "+ 2806 config.updateIdentifier); 2807 break setVariables; 2808 } 2809 2810 if (config.enterpriseConfig != null && 2811 config.enterpriseConfig.getEapMethod() != WifiEnterpriseConfig.Eap.NONE) { 2812 2813 WifiEnterpriseConfig enterpriseConfig = config.enterpriseConfig; 2814 2815 if (needsKeyStore(enterpriseConfig)) { 2816 /** 2817 * Keyguard settings may eventually be controlled by device policy. 2818 * We check here if keystore is unlocked before installing 2819 * credentials. 2820 * TODO: Do we need a dialog here ? 2821 */ 2822 if (mKeyStore.state() != KeyStore.State.UNLOCKED) { 2823 loge(config.SSID + ": key store is locked"); 2824 break setVariables; 2825 } 2826 2827 try { 2828 /* config passed may include only fields being updated. 2829 * In order to generate the key id, fetch uninitialized 2830 * fields from the currently tracked configuration 2831 */ 2832 WifiConfiguration currentConfig = mConfiguredNetworks.get(netId); 2833 String keyId = config.getKeyIdForCredentials(currentConfig); 2834 2835 if (!installKeys(enterpriseConfig, keyId)) { 2836 loge(config.SSID + ": failed to install keys"); 2837 break setVariables; 2838 } 2839 } catch (IllegalStateException e) { 2840 loge(config.SSID + " invalid config for key installation"); 2841 break setVariables; 2842 } 2843 } 2844 2845 HashMap<String, String> enterpriseFields = enterpriseConfig.getFields(); 2846 for (String key : enterpriseFields.keySet()) { 2847 String value = enterpriseFields.get(key); 2848 if (key.equals("password") && value != null && value.equals("*")) { 2849 // No need to try to set an obfuscated password, which will fail 2850 continue; 2851 } 2852 if (key.equals(WifiEnterpriseConfig.REALM_KEY) 2853 || key.equals(WifiEnterpriseConfig.PLMN_KEY)) { 2854 // No need to save realm or PLMN in supplicant 2855 continue; 2856 } 2857 if (!mWifiNative.setNetworkVariable( 2858 netId, 2859 key, 2860 value)) { 2861 removeKeys(enterpriseConfig); 2862 loge(config.SSID + ": failed to set " + key + 2863 ": " + value); 2864 break setVariables; 2865 } 2866 } 2867 } 2868 updateFailed = false; 2869 } // End of setVariables 2870 2871 if (updateFailed) { 2872 if (newNetwork) { 2873 mWifiNative.removeNetwork(netId); 2874 loge("Failed to set a network variable, removed network: " + netId); 2875 } 2876 return new NetworkUpdateResult(INVALID_NETWORK_ID); 2877 } 2878 2879 /* An update of the network variables requires reading them 2880 * back from the supplicant to update mConfiguredNetworks. 2881 * This is because some of the variables (SSID, wep keys & 2882 * passphrases) reflect different values when read back than 2883 * when written. For example, wep key is stored as * irrespective 2884 * of the value sent to the supplicant 2885 */ 2886 WifiConfiguration currentConfig = mConfiguredNetworks.get(netId); 2887 if (currentConfig == null) { 2888 currentConfig = new WifiConfiguration(); 2889 currentConfig.setIpAssignment(IpAssignment.DHCP); 2890 currentConfig.setProxySettings(ProxySettings.NONE); 2891 currentConfig.networkId = netId; 2892 if (config != null) { 2893 // Carry over the creation parameters 2894 currentConfig.selfAdded = config.selfAdded; 2895 currentConfig.didSelfAdd = config.didSelfAdd; 2896 currentConfig.ephemeral = config.ephemeral; 2897 currentConfig.autoJoinUseAggressiveJoinAttemptThreshold 2898 = config.autoJoinUseAggressiveJoinAttemptThreshold; 2899 currentConfig.lastConnectUid = config.lastConnectUid; 2900 currentConfig.lastUpdateUid = config.lastUpdateUid; 2901 currentConfig.creatorUid = config.creatorUid; 2902 currentConfig.creatorName = config.creatorName; 2903 currentConfig.lastUpdateName = config.lastUpdateName; 2904 currentConfig.peerWifiConfiguration = config.peerWifiConfiguration; 2905 currentConfig.FQDN = config.FQDN; 2906 currentConfig.providerFriendlyName = config.providerFriendlyName; 2907 currentConfig.roamingConsortiumIds = config.roamingConsortiumIds; 2908 currentConfig.validatedInternetAccess = config.validatedInternetAccess; 2909 currentConfig.numNoInternetAccessReports = config.numNoInternetAccessReports; 2910 currentConfig.updateTime = config.updateTime; 2911 currentConfig.creationTime = config.creationTime; 2912 } 2913 if (DBG) { 2914 log("created new config netId=" + Integer.toString(netId) 2915 + " uid=" + Integer.toString(currentConfig.creatorUid) 2916 + " name=" + currentConfig.creatorName); 2917 } 2918 } 2919 2920 /* save HomeSP object for passpoint networks */ 2921 HomeSP homeSP = null; 2922 2923 if (config.isPasspoint()) { 2924 try { 2925 Credential credential = 2926 new Credential(config.enterpriseConfig, mKeyStore, !newNetwork); 2927 HashSet<Long> roamingConsortiumIds = new HashSet<Long>(); 2928 for (Long roamingConsortiumId : config.roamingConsortiumIds) { 2929 roamingConsortiumIds.add(roamingConsortiumId); 2930 } 2931 2932 homeSP = new HomeSP(Collections.<String, Long>emptyMap(), config.FQDN, 2933 roamingConsortiumIds, Collections.<String>emptySet(), 2934 Collections.<Long>emptySet(), Collections.<Long>emptyList(), 2935 config.providerFriendlyName, null, credential); 2936 2937 log("created a homeSP object for " + config.networkId + ":" + config.SSID); 2938 2939 /* fix enterprise config properties for passpoint */ 2940 currentConfig.enterpriseConfig.setRealm(config.enterpriseConfig.getRealm()); 2941 currentConfig.enterpriseConfig.setPlmn(config.enterpriseConfig.getPlmn()); 2942 } 2943 catch (IOException ioe) { 2944 Log.e(TAG, "Failed to create Passpoint config: " + ioe); 2945 return new NetworkUpdateResult(INVALID_NETWORK_ID); 2946 } 2947 } 2948 2949 if (uid != WifiConfiguration.UNKNOWN_UID) { 2950 if (newNetwork) { 2951 currentConfig.creatorUid = uid; 2952 } else { 2953 currentConfig.lastUpdateUid = uid; 2954 } 2955 } 2956 2957 // For debug, record the time the configuration was modified 2958 StringBuilder sb = new StringBuilder(); 2959 sb.append("time="); 2960 Calendar c = Calendar.getInstance(); 2961 c.setTimeInMillis(System.currentTimeMillis()); 2962 sb.append(String.format("%tm-%td %tH:%tM:%tS.%tL", c, c, c, c, c, c)); 2963 2964 if (newNetwork) { 2965 currentConfig.dirty = true; 2966 currentConfig.creationTime = sb.toString(); 2967 } else { 2968 currentConfig.updateTime = sb.toString(); 2969 } 2970 2971 if (currentConfig.autoJoinStatus == WifiConfiguration.AUTO_JOIN_DELETED) { 2972 // Make sure the configuration is not deleted anymore since we just 2973 // added or modified it. 2974 currentConfig.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 2975 currentConfig.selfAdded = false; 2976 currentConfig.didSelfAdd = false; 2977 if (DBG) { 2978 log("remove deleted status netId=" + Integer.toString(netId) 2979 + " " + currentConfig.configKey()); 2980 } 2981 } 2982 2983 if (currentConfig.status == WifiConfiguration.Status.ENABLED) { 2984 // Make sure autojoin remain in sync with user modifying the configuration 2985 currentConfig.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 2986 } 2987 2988 if (currentConfig.configKey().equals(getLastSelectedConfiguration()) && 2989 currentConfig.ephemeral) { 2990 // Make the config non-ephemeral since the user just explicitly clicked it. 2991 currentConfig.ephemeral = false; 2992 if (DBG) log("remove ephemeral status netId=" + Integer.toString(netId) 2993 + " " + currentConfig.configKey()); 2994 } 2995 2996 if (DBG) log("will read network variables netId=" + Integer.toString(netId)); 2997 2998 readNetworkVariables(currentConfig); 2999 3000 // Persist configuration paramaters that are not saved by supplicant. 3001 if (config.lastUpdateName != null) { 3002 currentConfig.lastUpdateName = config.lastUpdateName; 3003 } 3004 if (config.lastUpdateUid != WifiConfiguration.UNKNOWN_UID) { 3005 currentConfig.lastUpdateUid = config.lastUpdateUid; 3006 } 3007 3008 mConfiguredNetworks.put(netId, currentConfig); 3009 3010 NetworkUpdateResult result = writeIpAndProxyConfigurationsOnChange(currentConfig, config); 3011 result.setIsNewNetwork(newNetwork); 3012 result.setNetworkId(netId); 3013 3014 if (homeSP != null) { 3015 writePasspointConfigs(null, homeSP); 3016 } 3017 writeKnownNetworkHistory(false); 3018 3019 return result; 3020 } 3021 3022 public WifiConfiguration getWifiConfigForHomeSP(HomeSP homeSP) { 3023 WifiConfiguration config = mConfiguredNetworks.getByFQDN(homeSP.getFQDN()); 3024 if (config == null) { 3025 Log.e(TAG, "Could not find network for homeSP " + homeSP.getFQDN()); 3026 } 3027 return config; 3028 } 3029 3030 private HomeSP getHomeSPForConfig(WifiConfiguration config) { 3031 WifiConfiguration storedConfig = mConfiguredNetworks.get(config.networkId); 3032 return storedConfig != null && storedConfig.isPasspoint() ? 3033 mMOManager.getHomeSP(storedConfig.FQDN) : null; 3034 } 3035 3036 public ScanDetailCache getScanDetailCache(WifiConfiguration config) { 3037 if (config == null) return null; 3038 ScanDetailCache cache = mScanDetailCaches.get(config.networkId); 3039 if (cache == null && config.networkId != WifiConfiguration.INVALID_NETWORK_ID) { 3040 cache = new ScanDetailCache(config); 3041 mScanDetailCaches.put(config.networkId, cache); 3042 } 3043 return cache; 3044 } 3045 3046 /** 3047 * This function run thru the Saved WifiConfigurations and check if some should be linked. 3048 * @param config 3049 */ 3050 public void linkConfiguration(WifiConfiguration config) { 3051 3052 if (getScanDetailCache(config) != null && getScanDetailCache(config).size() > 6) { 3053 // Ignore configurations with large number of BSSIDs 3054 return; 3055 } 3056 if (!config.allowedKeyManagement.get(KeyMgmt.WPA_PSK)) { 3057 // Only link WPA_PSK config 3058 return; 3059 } 3060 for (WifiConfiguration link : mConfiguredNetworks.values()) { 3061 boolean doLink = false; 3062 3063 if (link.configKey().equals(config.configKey())) { 3064 continue; 3065 } 3066 3067 if (link.autoJoinStatus == WifiConfiguration.AUTO_JOIN_DELETED || link.ephemeral) { 3068 continue; 3069 } 3070 3071 // Autojoin will be allowed to dynamically jump from a linked configuration 3072 // to another, hence only link configurations that have equivalent level of security 3073 if (!link.allowedKeyManagement.equals(config.allowedKeyManagement)) { 3074 continue; 3075 } 3076 3077 ScanDetailCache linkedScanDetailCache = getScanDetailCache(link); 3078 if (linkedScanDetailCache != null && linkedScanDetailCache.size() > 6) { 3079 // Ignore configurations with large number of BSSIDs 3080 continue; 3081 } 3082 3083 if (config.defaultGwMacAddress != null && link.defaultGwMacAddress != null) { 3084 // If both default GW are known, link only if they are equal 3085 if (config.defaultGwMacAddress.equals(link.defaultGwMacAddress)) { 3086 if (VDBG) { 3087 loge("linkConfiguration link due to same gw " + link.SSID + 3088 " and " + config.SSID + " GW " + config.defaultGwMacAddress); 3089 } 3090 doLink = true; 3091 } 3092 } else { 3093 // We do not know BOTH default gateways hence we will try to link 3094 // hoping that WifiConfigurations are indeed behind the same gateway. 3095 // once both WifiConfiguration have been tried and thus once both efault gateways 3096 // are known we will revisit the choice of linking them 3097 if ((getScanDetailCache(config) != null) 3098 && (getScanDetailCache(config).size() <= 6)) { 3099 3100 for (String abssid : getScanDetailCache(config).keySet()) { 3101 for (String bbssid : linkedScanDetailCache.keySet()) { 3102 if (VVDBG) { 3103 loge("linkConfiguration try to link due to DBDC BSSID match " 3104 + link.SSID + 3105 " and " + config.SSID + " bssida " + abssid 3106 + " bssidb " + bbssid); 3107 } 3108 if (abssid.regionMatches(true, 0, bbssid, 0, 16)) { 3109 // If first 16 ascii characters of BSSID matches, 3110 // we assume this is a DBDC 3111 doLink = true; 3112 } 3113 } 3114 } 3115 } 3116 } 3117 3118 if (doLink == true && onlyLinkSameCredentialConfigurations) { 3119 String apsk = readNetworkVariableFromSupplicantFile(link.SSID, "psk"); 3120 String bpsk = readNetworkVariableFromSupplicantFile(config.SSID, "psk"); 3121 if (apsk == null || bpsk == null 3122 || TextUtils.isEmpty(apsk) || TextUtils.isEmpty(apsk) 3123 || apsk.equals("*") || apsk.equals(DELETED_CONFIG_PSK) 3124 || !apsk.equals(bpsk)) { 3125 doLink = false; 3126 } 3127 } 3128 3129 if (doLink) { 3130 if (VDBG) { 3131 loge("linkConfiguration: will link " + link.configKey() 3132 + " and " + config.configKey()); 3133 } 3134 if (link.linkedConfigurations == null) { 3135 link.linkedConfigurations = new HashMap<String, Integer>(); 3136 } 3137 if (config.linkedConfigurations == null) { 3138 config.linkedConfigurations = new HashMap<String, Integer>(); 3139 } 3140 if (link.linkedConfigurations.get(config.configKey()) == null) { 3141 link.linkedConfigurations.put(config.configKey(), Integer.valueOf(1)); 3142 link.dirty = true; 3143 } 3144 if (config.linkedConfigurations.get(link.configKey()) == null) { 3145 config.linkedConfigurations.put(link.configKey(), Integer.valueOf(1)); 3146 config.dirty = true; 3147 } 3148 } else { 3149 if (link.linkedConfigurations != null 3150 && (link.linkedConfigurations.get(config.configKey()) != null)) { 3151 if (VDBG) { 3152 loge("linkConfiguration: un-link " + config.configKey() 3153 + " from " + link.configKey()); 3154 } 3155 link.dirty = true; 3156 link.linkedConfigurations.remove(config.configKey()); 3157 } 3158 if (config.linkedConfigurations != null 3159 && (config.linkedConfigurations.get(link.configKey()) != null)) { 3160 if (VDBG) { 3161 loge("linkConfiguration: un-link " + link.configKey() 3162 + " from " + config.configKey()); 3163 } 3164 config.dirty = true; 3165 config.linkedConfigurations.remove(link.configKey()); 3166 } 3167 } 3168 } 3169 } 3170 3171 public HashSet<Integer> makeChannelList(WifiConfiguration config, int age, boolean restrict) { 3172 if (config == null) 3173 return null; 3174 long now_ms = System.currentTimeMillis(); 3175 3176 HashSet<Integer> channels = new HashSet<Integer>(); 3177 3178 //get channels for this configuration, if there are at least 2 BSSIDs 3179 if (getScanDetailCache(config) == null && config.linkedConfigurations == null) { 3180 return null; 3181 } 3182 3183 if (VDBG) { 3184 StringBuilder dbg = new StringBuilder(); 3185 dbg.append("makeChannelList age=" + Integer.toString(age) 3186 + " for " + config.configKey() 3187 + " max=" + maxNumActiveChannelsForPartialScans); 3188 if (getScanDetailCache(config) != null) { 3189 dbg.append(" bssids=" + getScanDetailCache(config).size()); 3190 } 3191 if (config.linkedConfigurations != null) { 3192 dbg.append(" linked=" + config.linkedConfigurations.size()); 3193 } 3194 loge(dbg.toString()); 3195 } 3196 3197 int numChannels = 0; 3198 if (getScanDetailCache(config) != null && getScanDetailCache(config).size() > 0) { 3199 for (ScanDetail scanDetail : getScanDetailCache(config).values()) { 3200 ScanResult result = scanDetail.getScanResult(); 3201 //TODO : cout active and passive channels separately 3202 if (numChannels > maxNumActiveChannelsForPartialScans.get()) { 3203 break; 3204 } 3205 if (VDBG) { 3206 boolean test = (now_ms - result.seen) < age; 3207 loge("has " + result.BSSID + " freq=" + Integer.toString(result.frequency) 3208 + " age=" + Long.toString(now_ms - result.seen) + " ?=" + test); 3209 } 3210 if (((now_ms - result.seen) < age)/*||(!restrict || result.is24GHz())*/) { 3211 channels.add(result.frequency); 3212 numChannels++; 3213 } 3214 } 3215 } 3216 3217 //get channels for linked configurations 3218 if (config.linkedConfigurations != null) { 3219 for (String key : config.linkedConfigurations.keySet()) { 3220 WifiConfiguration linked = getWifiConfiguration(key); 3221 if (linked == null) 3222 continue; 3223 if (getScanDetailCache(linked) == null) { 3224 continue; 3225 } 3226 for (ScanDetail scanDetail : getScanDetailCache(linked).values()) { 3227 ScanResult result = scanDetail.getScanResult(); 3228 if (VDBG) { 3229 loge("has link: " + result.BSSID 3230 + " freq=" + Integer.toString(result.frequency) 3231 + " age=" + Long.toString(now_ms - result.seen)); 3232 } 3233 if (numChannels > maxNumActiveChannelsForPartialScans.get()) { 3234 break; 3235 } 3236 if (((now_ms - result.seen) < age)/*||(!restrict || result.is24GHz())*/) { 3237 channels.add(result.frequency); 3238 numChannels++; 3239 } 3240 } 3241 } 3242 } 3243 return channels; 3244 } 3245 3246 private Map<HomeSP, PasspointMatch> matchPasspointNetworks(ScanDetail scanDetail) { 3247 if (!mMOManager.isConfigured()) { 3248 return null; 3249 } 3250 NetworkDetail networkDetail = scanDetail.getNetworkDetail(); 3251 if (!networkDetail.hasInterworking()) { 3252 return null; 3253 } 3254 updateAnqpCache(scanDetail, networkDetail.getANQPElements()); 3255 3256 Map<HomeSP, PasspointMatch> matches = matchNetwork(scanDetail, true); 3257 Log.d(Utils.hs2LogTag(getClass()), scanDetail.getSSID() + 3258 " pass 1 matches: " + toMatchString(matches)); 3259 return matches; 3260 } 3261 3262 private Map<HomeSP, PasspointMatch> matchNetwork(ScanDetail scanDetail, boolean query) { 3263 NetworkDetail networkDetail = scanDetail.getNetworkDetail(); 3264 3265 ANQPData anqpData = mAnqpCache.getEntry(networkDetail); 3266 3267 Map<Constants.ANQPElementType, ANQPElement> anqpElements = 3268 anqpData != null ? anqpData.getANQPElements() : null; 3269 3270 boolean queried = !query; 3271 Collection<HomeSP> homeSPs = mMOManager.getLoadedSPs().values(); 3272 Map<HomeSP, PasspointMatch> matches = new HashMap<>(homeSPs.size()); 3273 Log.d(Utils.hs2LogTag(getClass()), "match nwk " + scanDetail.toKeyString() + 3274 ", anqp " + ( anqpData != null ? "present" : "missing" ) + 3275 ", query " + query + ", home sps: " + homeSPs.size()); 3276 3277 for (HomeSP homeSP : homeSPs) { 3278 PasspointMatch match = homeSP.match(networkDetail, anqpElements, mSIMAccessor); 3279 3280 Log.d(Utils.hs2LogTag(getClass()), " -- " + 3281 homeSP.getFQDN() + ": match " + match + ", queried " + queried); 3282 3283 if (match == PasspointMatch.Incomplete && !queried) { 3284 if (mAnqpCache.initiate(networkDetail)) { 3285 mSupplicantBridge.startANQP(scanDetail); 3286 } 3287 queried = true; 3288 } 3289 matches.put(homeSP, match); 3290 } 3291 return matches; 3292 } 3293 3294 public void notifyANQPDone(Long bssid, boolean success) { 3295 mSupplicantBridge.notifyANQPDone(bssid, success); 3296 } 3297 3298 public void notifyANQPResponse(ScanDetail scanDetail, 3299 Map<Constants.ANQPElementType, ANQPElement> anqpElements) { 3300 3301 updateAnqpCache(scanDetail, anqpElements); 3302 if (anqpElements == null || anqpElements.isEmpty()) { 3303 return; 3304 } 3305 scanDetail.propagateANQPInfo(anqpElements); 3306 3307 Map<HomeSP, PasspointMatch> matches = matchNetwork(scanDetail, false); 3308 Log.d(Utils.hs2LogTag(getClass()), scanDetail.getSSID() + 3309 " pass 2 matches: " + toMatchString(matches)); 3310 3311 cacheScanResultForPasspointConfigs(scanDetail, matches); 3312 } 3313 3314 3315 private void updateAnqpCache(ScanDetail scanDetail, 3316 Map<Constants.ANQPElementType,ANQPElement> anqpElements) 3317 { 3318 NetworkDetail networkDetail = scanDetail.getNetworkDetail(); 3319 3320 if (anqpElements == null) { 3321 // Try to pull cached data if query failed. 3322 ANQPData data = mAnqpCache.getEntry(networkDetail); 3323 if (data != null) { 3324 scanDetail.propagateANQPInfo(data.getANQPElements()); 3325 } 3326 return; 3327 } 3328 3329 mAnqpCache.update(networkDetail, anqpElements); 3330 } 3331 3332 private static String toMatchString(Map<HomeSP, PasspointMatch> matches) { 3333 StringBuilder sb = new StringBuilder(); 3334 for (Map.Entry<HomeSP, PasspointMatch> entry : matches.entrySet()) { 3335 sb.append(' ').append(entry.getKey().getFQDN()).append("->").append(entry.getValue()); 3336 } 3337 return sb.toString(); 3338 } 3339 3340 private void cacheScanResultForPasspointConfigs(ScanDetail scanDetail, 3341 Map<HomeSP,PasspointMatch> matches) { 3342 3343 for (Map.Entry<HomeSP, PasspointMatch> entry : matches.entrySet()) { 3344 PasspointMatch match = entry.getValue(); 3345 if (match == PasspointMatch.HomeProvider || match == PasspointMatch.RoamingProvider) { 3346 WifiConfiguration config = getWifiConfigForHomeSP(entry.getKey()); 3347 if (config != null) { 3348 cacheScanResultForConfig(config, scanDetail, entry.getValue()); 3349 } else { 3350 Log.w(Utils.hs2LogTag(getClass()), "Failed to find config for '" + 3351 entry.getKey().getFQDN() + "'"); 3352 /* perhaps the configuration was deleted?? */ 3353 } 3354 } 3355 } 3356 } 3357 3358 private void cacheScanResultForConfig( 3359 WifiConfiguration config, ScanDetail scanDetail, PasspointMatch passpointMatch) { 3360 3361 ScanResult scanResult = scanDetail.getScanResult(); 3362 3363 if (config.autoJoinStatus >= WifiConfiguration.AUTO_JOIN_DELETED) { 3364 if (VVDBG) { 3365 loge("updateSavedNetworkHistory(): found a deleted, skip it... " 3366 + config.configKey()); 3367 } 3368 // The scan result belongs to a deleted config: 3369 // - increment numConfigFound to remember that we found a config 3370 // matching for this scan result 3371 // - dont do anything since the config was deleted, just skip... 3372 return; 3373 } 3374 3375 ScanDetailCache scanDetailCache = getScanDetailCache(config); 3376 if (scanDetailCache == null) { 3377 Log.w(TAG, "Could not allocate scan cache for " + config.SSID); 3378 return; 3379 } 3380 3381 // Adding a new BSSID 3382 ScanResult result = scanDetailCache.get(scanResult.BSSID); 3383 if (result != null) { 3384 // transfer the black list status 3385 scanResult.autoJoinStatus = result.autoJoinStatus; 3386 scanResult.blackListTimestamp = result.blackListTimestamp; 3387 scanResult.numIpConfigFailures = result.numIpConfigFailures; 3388 scanResult.numConnection = result.numConnection; 3389 scanResult.isAutoJoinCandidate = result.isAutoJoinCandidate; 3390 } 3391 3392 if (config.ephemeral) { 3393 // For an ephemeral Wi-Fi config, the ScanResult should be considered 3394 // untrusted. 3395 scanResult.untrusted = true; 3396 } 3397 3398 if (scanDetailCache.size() > (maxNumScanCacheEntries + 64)) { 3399 long now_dbg = 0; 3400 if (VVDBG) { 3401 loge(" Will trim config " + config.configKey() 3402 + " size " + scanDetailCache.size()); 3403 3404 for (ScanDetail sd : scanDetailCache.values()) { 3405 loge(" " + sd.getBSSIDString() + " " + sd.getSeen()); 3406 } 3407 now_dbg = SystemClock.elapsedRealtimeNanos(); 3408 } 3409 // Trim the scan result cache to maxNumScanCacheEntries entries max 3410 // Since this operation is expensive, make sure it is not performed 3411 // until the cache has grown significantly above the trim treshold 3412 scanDetailCache.trim(maxNumScanCacheEntries); 3413 if (VVDBG) { 3414 long diff = SystemClock.elapsedRealtimeNanos() - now_dbg; 3415 loge(" Finished trimming config, time(ns) " + diff); 3416 for (ScanDetail sd : scanDetailCache.values()) { 3417 loge(" " + sd.getBSSIDString() + " " + sd.getSeen()); 3418 } 3419 } 3420 } 3421 3422 // Add the scan result to this WifiConfiguration 3423 if (passpointMatch != null) 3424 scanDetailCache.put(scanDetail, passpointMatch, getHomeSPForConfig(config)); 3425 else 3426 scanDetailCache.put(scanDetail); 3427 3428 // Since we added a scan result to this configuration, re-attempt linking 3429 linkConfiguration(config); 3430 } 3431 3432 3433 // Update the WifiConfiguration database with the new scan result 3434 // A scan result can be associated to multiple WifiConfigurations 3435 public boolean updateSavedNetworkHistory(ScanDetail scanDetail) { 3436 3437 ScanResult scanResult = scanDetail.getScanResult(); 3438 NetworkDetail networkDetail = scanDetail.getNetworkDetail(); 3439 3440 int numConfigFound = 0; 3441 if (scanResult == null) 3442 return false; 3443 3444 String SSID = "\"" + scanResult.SSID + "\""; 3445 3446 if (networkDetail.hasInterworking()) { 3447 Map<HomeSP, PasspointMatch> matches = matchPasspointNetworks(scanDetail); 3448 if (matches != null) { 3449 cacheScanResultForPasspointConfigs(scanDetail, matches); 3450 return matches.size() != 0; 3451 } 3452 } 3453 3454 for (WifiConfiguration config : mConfiguredNetworks.values()) { 3455 boolean found = false; 3456 3457 if (config.SSID == null || !config.SSID.equals(SSID)) { 3458 // SSID mismatch 3459 if (VVDBG) { 3460 loge("updateSavedNetworkHistory(): SSID mismatch " + config.configKey() 3461 + " SSID=" + config.SSID + " " + SSID); 3462 } 3463 continue; 3464 } 3465 if (VDBG) { 3466 loge("updateSavedNetworkHistory(): try " + config.configKey() 3467 + " SSID=" + config.SSID + " " + scanResult.SSID 3468 + " " + scanResult.capabilities 3469 + " ajst=" + config.autoJoinStatus); 3470 } 3471 if (scanResult.capabilities.contains("WEP") 3472 && config.configKey().contains("WEP")) { 3473 found = true; 3474 } else if (scanResult.capabilities.contains("PSK") 3475 && config.configKey().contains("PSK")) { 3476 found = true; 3477 } else if (scanResult.capabilities.contains("EAP") 3478 && config.configKey().contains("EAP")) { 3479 found = true; 3480 } else if (!scanResult.capabilities.contains("WEP") 3481 && !scanResult.capabilities.contains("PSK") 3482 && !scanResult.capabilities.contains("EAP") 3483 && !config.configKey().contains("WEP") 3484 && !config.configKey().contains("PSK") 3485 && !config.configKey().contains("EAP")) { 3486 found = true; 3487 } 3488 3489 if (found) { 3490 numConfigFound ++; 3491 cacheScanResultForConfig(config, scanDetail, null); 3492 } 3493 3494 if (VDBG && found) { 3495 String status = ""; 3496 if (scanResult.autoJoinStatus > 0) { 3497 status = " status=" + Integer.toString(scanResult.autoJoinStatus); 3498 } 3499 loge(" got known scan result " + 3500 scanResult.BSSID + " key : " 3501 + config.configKey() + " num: " + 3502 Integer.toString(getScanDetailCache(config).size()) 3503 + " rssi=" + Integer.toString(scanResult.level) 3504 + " freq=" + Integer.toString(scanResult.frequency) 3505 + status); 3506 } 3507 } 3508 return numConfigFound != 0; 3509 } 3510 3511 /* Compare current and new configuration and write to file on change */ 3512 private NetworkUpdateResult writeIpAndProxyConfigurationsOnChange( 3513 WifiConfiguration currentConfig, 3514 WifiConfiguration newConfig) { 3515 boolean ipChanged = false; 3516 boolean proxyChanged = false; 3517 3518 if (VDBG) { 3519 loge("writeIpAndProxyConfigurationsOnChange: " + currentConfig.SSID + " -> " + 3520 newConfig.SSID + " path: " + ipConfigFile); 3521 } 3522 3523 3524 switch (newConfig.getIpAssignment()) { 3525 case STATIC: 3526 if (currentConfig.getIpAssignment() != newConfig.getIpAssignment()) { 3527 ipChanged = true; 3528 } else { 3529 ipChanged = !Objects.equals( 3530 currentConfig.getStaticIpConfiguration(), 3531 newConfig.getStaticIpConfiguration()); 3532 } 3533 break; 3534 case DHCP: 3535 if (currentConfig.getIpAssignment() != newConfig.getIpAssignment()) { 3536 ipChanged = true; 3537 } 3538 break; 3539 case UNASSIGNED: 3540 /* Ignore */ 3541 break; 3542 default: 3543 loge("Ignore invalid ip assignment during write"); 3544 break; 3545 } 3546 3547 switch (newConfig.getProxySettings()) { 3548 case STATIC: 3549 case PAC: 3550 ProxyInfo newHttpProxy = newConfig.getHttpProxy(); 3551 ProxyInfo currentHttpProxy = currentConfig.getHttpProxy(); 3552 3553 if (newHttpProxy != null) { 3554 proxyChanged = !newHttpProxy.equals(currentHttpProxy); 3555 } else { 3556 proxyChanged = (currentHttpProxy != null); 3557 } 3558 break; 3559 case NONE: 3560 if (currentConfig.getProxySettings() != newConfig.getProxySettings()) { 3561 proxyChanged = true; 3562 } 3563 break; 3564 case UNASSIGNED: 3565 /* Ignore */ 3566 break; 3567 default: 3568 loge("Ignore invalid proxy configuration during write"); 3569 break; 3570 } 3571 3572 if (ipChanged) { 3573 currentConfig.setIpAssignment(newConfig.getIpAssignment()); 3574 currentConfig.setStaticIpConfiguration(newConfig.getStaticIpConfiguration()); 3575 log("IP config changed SSID = " + currentConfig.SSID); 3576 if (currentConfig.getStaticIpConfiguration() != null) { 3577 log(" static configuration: " + 3578 currentConfig.getStaticIpConfiguration().toString()); 3579 } 3580 } 3581 3582 if (proxyChanged) { 3583 currentConfig.setProxySettings(newConfig.getProxySettings()); 3584 currentConfig.setHttpProxy(newConfig.getHttpProxy()); 3585 log("proxy changed SSID = " + currentConfig.SSID); 3586 if (currentConfig.getHttpProxy() != null) { 3587 log(" proxyProperties: " + currentConfig.getHttpProxy().toString()); 3588 } 3589 } 3590 3591 if (ipChanged || proxyChanged) { 3592 writeIpAndProxyConfigurations(); 3593 sendConfiguredNetworksChangedBroadcast(currentConfig, 3594 WifiManager.CHANGE_REASON_CONFIG_CHANGE); 3595 } 3596 return new NetworkUpdateResult(ipChanged, proxyChanged); 3597 } 3598 3599 /** Returns true if a particular config key needs to be quoted when passed to the supplicant. */ 3600 private boolean enterpriseConfigKeyShouldBeQuoted(String key) { 3601 switch (key) { 3602 case WifiEnterpriseConfig.EAP_KEY: 3603 case WifiEnterpriseConfig.ENGINE_KEY: 3604 return false; 3605 default: 3606 return true; 3607 } 3608 } 3609 3610 /** 3611 * Read the variables from the supplicant daemon that are needed to 3612 * fill in the WifiConfiguration object. 3613 * 3614 * @param config the {@link WifiConfiguration} object to be filled in. 3615 */ 3616 private void readNetworkVariables(WifiConfiguration config) { 3617 3618 int netId = config.networkId; 3619 if (netId < 0) 3620 return; 3621 3622 /* 3623 * TODO: maybe should have a native method that takes an array of 3624 * variable names and returns an array of values. But we'd still 3625 * be doing a round trip to the supplicant daemon for each variable. 3626 */ 3627 String value; 3628 3629 value = mWifiNative.getNetworkVariable(netId, WifiConfiguration.ssidVarName); 3630 if (!TextUtils.isEmpty(value)) { 3631 if (value.charAt(0) != '"') { 3632 config.SSID = "\"" + WifiSsid.createFromHex(value).toString() + "\""; 3633 //TODO: convert a hex string that is not UTF-8 decodable to a P-formatted 3634 //supplicant string 3635 } else { 3636 config.SSID = value; 3637 } 3638 } else { 3639 config.SSID = null; 3640 } 3641 3642 value = mWifiNative.getNetworkVariable(netId, WifiConfiguration.bssidVarName); 3643 if (!TextUtils.isEmpty(value)) { 3644 config.BSSID = value; 3645 } else { 3646 config.BSSID = null; 3647 } 3648 3649 value = mWifiNative.getNetworkVariable(netId, WifiConfiguration.priorityVarName); 3650 config.priority = -1; 3651 if (!TextUtils.isEmpty(value)) { 3652 try { 3653 config.priority = Integer.parseInt(value); 3654 } catch (NumberFormatException ignore) { 3655 } 3656 } 3657 3658 value = mWifiNative.getNetworkVariable(netId, WifiConfiguration.hiddenSSIDVarName); 3659 config.hiddenSSID = false; 3660 if (!TextUtils.isEmpty(value)) { 3661 try { 3662 config.hiddenSSID = Integer.parseInt(value) != 0; 3663 } catch (NumberFormatException ignore) { 3664 } 3665 } 3666 3667 value = mWifiNative.getNetworkVariable(netId, WifiConfiguration.wepTxKeyIdxVarName); 3668 config.wepTxKeyIndex = -1; 3669 if (!TextUtils.isEmpty(value)) { 3670 try { 3671 config.wepTxKeyIndex = Integer.parseInt(value); 3672 } catch (NumberFormatException ignore) { 3673 } 3674 } 3675 3676 for (int i = 0; i < 4; i++) { 3677 value = mWifiNative.getNetworkVariable(netId, 3678 WifiConfiguration.wepKeyVarNames[i]); 3679 if (!TextUtils.isEmpty(value)) { 3680 config.wepKeys[i] = value; 3681 } else { 3682 config.wepKeys[i] = null; 3683 } 3684 } 3685 3686 value = mWifiNative.getNetworkVariable(netId, WifiConfiguration.pskVarName); 3687 if (!TextUtils.isEmpty(value)) { 3688 config.preSharedKey = value; 3689 } else { 3690 config.preSharedKey = null; 3691 } 3692 3693 readNetworkBitsetVariable(config.networkId, config.allowedProtocols, 3694 WifiConfiguration.Protocol.varName, WifiConfiguration.Protocol.strings); 3695 3696 readNetworkBitsetVariable(config.networkId, config.allowedKeyManagement, 3697 WifiConfiguration.KeyMgmt.varName, WifiConfiguration.KeyMgmt.strings); 3698 3699 readNetworkBitsetVariable(config.networkId, config.allowedAuthAlgorithms, 3700 WifiConfiguration.AuthAlgorithm.varName, WifiConfiguration.AuthAlgorithm.strings); 3701 3702 readNetworkBitsetVariable(config.networkId, config.allowedPairwiseCiphers, 3703 WifiConfiguration.PairwiseCipher.varName, WifiConfiguration.PairwiseCipher.strings); 3704 3705 readNetworkBitsetVariable(config.networkId, config.allowedGroupCiphers, 3706 WifiConfiguration.GroupCipher.varName, WifiConfiguration.GroupCipher.strings); 3707 3708 if (config.enterpriseConfig == null) { 3709 config.enterpriseConfig = new WifiEnterpriseConfig(); 3710 } 3711 HashMap<String, String> enterpriseFields = config.enterpriseConfig.getFields(); 3712 for (String key : ENTERPRISE_CONFIG_SUPPLICANT_KEYS) { 3713 value = mWifiNative.getNetworkVariable(netId, key); 3714 if (!TextUtils.isEmpty(value)) { 3715 if (!enterpriseConfigKeyShouldBeQuoted(key)) { 3716 value = removeDoubleQuotes(value); 3717 } 3718 enterpriseFields.put(key, value); 3719 } else { 3720 enterpriseFields.put(key, EMPTY_VALUE); 3721 } 3722 } 3723 3724 if (migrateOldEapTlsNative(config.enterpriseConfig, netId)) { 3725 saveConfig(); 3726 } 3727 3728 migrateCerts(config.enterpriseConfig); 3729 // initializeSoftwareKeystoreFlag(config.enterpriseConfig, mKeyStore); 3730 } 3731 3732 private static String removeDoubleQuotes(String string) { 3733 int length = string.length(); 3734 if ((length > 1) && (string.charAt(0) == '"') 3735 && (string.charAt(length - 1) == '"')) { 3736 return string.substring(1, length - 1); 3737 } 3738 return string; 3739 } 3740 3741 private static String makeString(BitSet set, String[] strings) { 3742 StringBuffer buf = new StringBuffer(); 3743 int nextSetBit = -1; 3744 3745 /* Make sure all set bits are in [0, strings.length) to avoid 3746 * going out of bounds on strings. (Shouldn't happen, but...) */ 3747 set = set.get(0, strings.length); 3748 3749 while ((nextSetBit = set.nextSetBit(nextSetBit + 1)) != -1) { 3750 buf.append(strings[nextSetBit].replace('_', '-')).append(' '); 3751 } 3752 3753 // remove trailing space 3754 if (set.cardinality() > 0) { 3755 buf.setLength(buf.length() - 1); 3756 } 3757 3758 return buf.toString(); 3759 } 3760 3761 private int lookupString(String string, String[] strings) { 3762 int size = strings.length; 3763 3764 string = string.replace('-', '_'); 3765 3766 for (int i = 0; i < size; i++) 3767 if (string.equals(strings[i])) 3768 return i; 3769 3770 // if we ever get here, we should probably add the 3771 // value to WifiConfiguration to reflect that it's 3772 // supported by the WPA supplicant 3773 loge("Failed to look-up a string: " + string); 3774 3775 return -1; 3776 } 3777 3778 /* return the allowed key management based on a scan result */ 3779 3780 public WifiConfiguration wifiConfigurationFromScanResult(ScanDetail scanDetail) { 3781 3782 ScanResult result = scanDetail.getScanResult(); 3783 WifiConfiguration config = new WifiConfiguration(); 3784 3785 config.SSID = "\"" + result.SSID + "\""; 3786 3787 if (VDBG) { 3788 loge("WifiConfiguration from scan results " + 3789 config.SSID + " cap " + result.capabilities); 3790 } 3791 if (result.capabilities.contains("WEP")) { 3792 config.allowedKeyManagement.set(KeyMgmt.NONE); 3793 config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN); //? 3794 config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.SHARED); 3795 } 3796 3797 if (result.capabilities.contains("PSK")) { 3798 config.allowedKeyManagement.set(KeyMgmt.WPA_PSK); 3799 } 3800 3801 if (result.capabilities.contains("EAP")) { 3802 //this is probably wrong, as we don't have a way to enter the enterprise config 3803 config.allowedKeyManagement.set(KeyMgmt.WPA_EAP); 3804 config.allowedKeyManagement.set(KeyMgmt.IEEE8021X); 3805 } 3806 3807 /* getScanDetailCache(config).put(scanDetail); */ 3808 3809 return config; 3810 } 3811 3812 3813 /* Returns a unique for a given configuration */ 3814 private static int configKey(WifiConfiguration config) { 3815 String key = config.configKey(); 3816 return key.hashCode(); 3817 } 3818 3819 void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 3820 pw.println("Dump of WifiConfigStore"); 3821 pw.println("mLastPriority " + mLastPriority); 3822 pw.println("Configured networks"); 3823 for (WifiConfiguration conf : getAllConfiguredNetworks()) { 3824 pw.println(conf); 3825 } 3826 pw.println(); 3827 if (mLostConfigsDbg != null && mLostConfigsDbg.size() > 0) { 3828 pw.println("LostConfigs: "); 3829 for (String s : mLostConfigsDbg) { 3830 pw.println(s); 3831 } 3832 } 3833 if (mLocalLog != null) { 3834 pw.println("WifiConfigStore - Log Begin ----"); 3835 mLocalLog.dump(fd, pw, args); 3836 pw.println("WifiConfigStore - Log End ----"); 3837 } 3838 } 3839 3840 public String getConfigFile() { 3841 return ipConfigFile; 3842 } 3843 3844 protected void loge(String s) { 3845 loge(s, false); 3846 } 3847 3848 protected void loge(String s, boolean stack) { 3849 if (stack) { 3850 Log.e(TAG, s + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3851 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3852 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3853 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3854 } else { 3855 Log.e(TAG, s); 3856 } 3857 } 3858 3859 private void logKernelTime() { 3860 long kernelTimeMs = System.nanoTime()/(1000*1000); 3861 StringBuilder builder = new StringBuilder(); 3862 builder.append("kernel time = ").append(kernelTimeMs/1000).append(".").append 3863 (kernelTimeMs%1000).append("\n"); 3864 localLog(builder.toString()); 3865 } 3866 3867 protected void log(String s) { 3868 Log.d(TAG, s); 3869 } 3870 3871 private void localLog(String s) { 3872 if (mLocalLog != null) { 3873 mLocalLog.log(s); 3874 } 3875 } 3876 3877 private void localLog(String s, boolean force) { 3878 localLog(s); 3879 if (force) loge(s); 3880 } 3881 3882 private void localLog(String s, int netId) { 3883 if (mLocalLog == null) { 3884 return; 3885 } 3886 3887 WifiConfiguration config; 3888 synchronized(mConfiguredNetworks) { // !!! Useless synchronization 3889 config = mConfiguredNetworks.get(netId); 3890 } 3891 3892 if (config != null) { 3893 mLocalLog.log(s + " " + config.getPrintableSsid() + " " + netId 3894 + " status=" + config.status 3895 + " key=" + config.configKey()); 3896 } else { 3897 mLocalLog.log(s + " " + netId); 3898 } 3899 } 3900 3901 // Certificate and private key management for EnterpriseConfig 3902 static boolean needsKeyStore(WifiEnterpriseConfig config) { 3903 // Has no keys to be installed 3904 if (config.getClientCertificate() == null && config.getCaCertificate() == null) 3905 return false; 3906 return true; 3907 } 3908 3909 static boolean isHardwareBackedKey(PrivateKey key) { 3910 return KeyChain.isBoundKeyAlgorithm(key.getAlgorithm()); 3911 } 3912 3913 static boolean hasHardwareBackedKey(Certificate certificate) { 3914 return KeyChain.isBoundKeyAlgorithm(certificate.getPublicKey().getAlgorithm()); 3915 } 3916 3917 static boolean needsSoftwareBackedKeyStore(WifiEnterpriseConfig config) { 3918 String client = config.getClientCertificateAlias(); 3919 if (!TextUtils.isEmpty(client)) { 3920 // a valid client certificate is configured 3921 3922 // BUGBUG: keyStore.get() never returns certBytes; because it is not 3923 // taking WIFI_UID as a parameter. It always looks for certificate 3924 // with SYSTEM_UID, and never finds any Wifi certificates. Assuming that 3925 // all certificates need software keystore until we get the get() API 3926 // fixed. 3927 3928 return true; 3929 } 3930 3931 /* 3932 try { 3933 3934 if (DBG) Slog.d(TAG, "Loading client certificate " + Credentials 3935 .USER_CERTIFICATE + client); 3936 3937 CertificateFactory factory = CertificateFactory.getInstance("X.509"); 3938 if (factory == null) { 3939 Slog.e(TAG, "Error getting certificate factory"); 3940 return; 3941 } 3942 3943 byte[] certBytes = keyStore.get(Credentials.USER_CERTIFICATE + client); 3944 if (certBytes != null) { 3945 Certificate cert = (X509Certificate) factory.generateCertificate( 3946 new ByteArrayInputStream(certBytes)); 3947 3948 if (cert != null) { 3949 mNeedsSoftwareKeystore = hasHardwareBackedKey(cert); 3950 3951 if (DBG) Slog.d(TAG, "Loaded client certificate " + Credentials 3952 .USER_CERTIFICATE + client); 3953 if (DBG) Slog.d(TAG, "It " + (mNeedsSoftwareKeystore ? "needs" : 3954 "does not need" ) + " software key store"); 3955 } else { 3956 Slog.d(TAG, "could not generate certificate"); 3957 } 3958 } else { 3959 Slog.e(TAG, "Could not load client certificate " + Credentials 3960 .USER_CERTIFICATE + client); 3961 mNeedsSoftwareKeystore = true; 3962 } 3963 3964 } catch(CertificateException e) { 3965 Slog.e(TAG, "Could not read certificates"); 3966 mCaCert = null; 3967 mClientCertificate = null; 3968 } 3969 */ 3970 3971 return false; 3972 } 3973 3974 boolean isNetworkConfigured(WifiConfiguration config) { 3975 // Check if either we have a network Id or a WifiConfiguration 3976 // matching the one we are trying to add. 3977 3978 if(config.networkId != INVALID_NETWORK_ID) { 3979 return (mConfiguredNetworks.get(config.networkId) != null); 3980 } 3981 3982 return (mConfiguredNetworks.getByConfigKey(config.configKey()) != null); 3983 } 3984 3985 /** 3986 * Checks if uid has access to modify the configuration corresponding to networkId. 3987 * 3988 * Factors involved in modifiability of a config are as follows. 3989 * If uid is a Device Owner app then it has full control over the device, including WiFi 3990 * configs. 3991 * If the modification is only for administrative annotation (e.g. when connecting) or the 3992 * config is not lockdown eligible (currently that means any config not last updated by the DO) 3993 * then the creator of config or an app holding OVERRIDE_CONFIG_WIFI can modify the config. 3994 * If the config is lockdown eligible and the modification is substantial (not annotation) 3995 * then the requirement to be able to modify the config by the uid is as follows: 3996 * a) the uid has to hold OVERRIDE_CONFIG_WIFI and 3997 * b) the lockdown feature should be disabled. 3998 */ 3999 boolean canModifyNetwork(int uid, int networkId, boolean onlyAnnotate) { 4000 WifiConfiguration config = mConfiguredNetworks.get(networkId); 4001 4002 if (config == null) { 4003 loge("canModifyNetwork: cannot find config networkId " + networkId); 4004 return false; 4005 } 4006 4007 final DevicePolicyManagerInternal dpmi = LocalServices.getService( 4008 DevicePolicyManagerInternal.class); 4009 4010 final boolean isUidDeviceOwner = dpmi != null && dpmi.isActiveAdminWithPolicy(uid, 4011 DeviceAdminInfo.USES_POLICY_DEVICE_OWNER); 4012 4013 if (isUidDeviceOwner) { 4014 // Device Owner has full control over the device, including WiFi Configs 4015 return true; 4016 } 4017 4018 final boolean isCreator = (config.creatorUid == uid); 4019 4020 if (onlyAnnotate) { 4021 return isCreator || checkConfigOverridePermission(uid); 4022 } 4023 4024 // Check if device has DPM capability. If it has and dpmi is still null, then we 4025 // treat this case with suspicion and bail out. 4026 if (mContext.getPackageManager().hasSystemFeature(PackageManager.FEATURE_DEVICE_ADMIN) 4027 && dpmi == null) { 4028 return false; 4029 } 4030 4031 // WiFi config lockdown related logic. At this point we know uid NOT to be a Device Owner. 4032 4033 final boolean isConfigEligibleForLockdown = dpmi != null && dpmi.isActiveAdminWithPolicy( 4034 config.creatorUid, DeviceAdminInfo.USES_POLICY_DEVICE_OWNER); 4035 if (!isConfigEligibleForLockdown) { 4036 return isCreator || checkConfigOverridePermission(uid); 4037 } 4038 4039 final ContentResolver resolver = mContext.getContentResolver(); 4040 final boolean isLockdownFeatureEnabled = Settings.Global.getInt(resolver, 4041 Settings.Global.WIFI_DEVICE_OWNER_CONFIGS_LOCKDOWN, 0) != 0; 4042 return !isLockdownFeatureEnabled && checkConfigOverridePermission(uid); 4043 } 4044 4045 /** 4046 * Checks if uid has access to modify config. 4047 */ 4048 boolean canModifyNetwork(int uid, WifiConfiguration config, boolean onlyAnnotate) { 4049 if (config == null) { 4050 loge("canModifyNetowrk recieved null configuration"); 4051 return false; 4052 } 4053 4054 // Resolve the correct network id. 4055 int netid; 4056 if (config.networkId != INVALID_NETWORK_ID){ 4057 netid = config.networkId; 4058 } else { 4059 WifiConfiguration test = mConfiguredNetworks.getByConfigKey(config.configKey()); 4060 if (test == null) { 4061 return false; 4062 } else { 4063 netid = test.networkId; 4064 } 4065 } 4066 4067 return canModifyNetwork(uid, netid, onlyAnnotate); 4068 } 4069 4070 boolean checkConfigOverridePermission(int uid) { 4071 try { 4072 return (AppGlobals.getPackageManager().checkUidPermission( 4073 android.Manifest.permission.OVERRIDE_WIFI_CONFIG, uid) 4074 == PackageManager.PERMISSION_GRANTED); 4075 } catch (RemoteException e) { 4076 return false; 4077 } 4078 } 4079 4080 /** called when CS ask WiFistateMachine to disconnect the current network 4081 * because the score is bad. 4082 */ 4083 void handleBadNetworkDisconnectReport(int netId, WifiInfo info) { 4084 /* TODO verify the bad network is current */ 4085 WifiConfiguration config = mConfiguredNetworks.get(netId); 4086 if (config != null) { 4087 if ((info.getRssi() < WifiConfiguration.UNWANTED_BLACKLIST_SOFT_RSSI_24 4088 && info.is24GHz()) || (info.getRssi() < 4089 WifiConfiguration.UNWANTED_BLACKLIST_SOFT_RSSI_5 && info.is5GHz())) { 4090 // We got disconnected and RSSI was bad, so disable light 4091 config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_TEMPORARY_DISABLED 4092 + WifiConfiguration.UNWANTED_BLACKLIST_SOFT_BUMP); 4093 loge("handleBadNetworkDisconnectReport (+4) " 4094 + Integer.toString(netId) + " " + info); 4095 } else { 4096 // We got disabled but RSSI is good, so disable hard 4097 config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_TEMPORARY_DISABLED 4098 + WifiConfiguration.UNWANTED_BLACKLIST_HARD_BUMP); 4099 loge("handleBadNetworkDisconnectReport (+8) " 4100 + Integer.toString(netId) + " " + info); 4101 } 4102 } 4103 // Record last time Connectivity Service switched us away from WiFi and onto Cell 4104 lastUnwantedNetworkDisconnectTimestamp = System.currentTimeMillis(); 4105 } 4106 4107 boolean handleBSSIDBlackList(int netId, String BSSID, boolean enable) { 4108 boolean found = false; 4109 if (BSSID == null) 4110 return found; 4111 4112 // Look for the BSSID in our config store 4113 for (WifiConfiguration config : mConfiguredNetworks.values()) { 4114 if (getScanDetailCache(config) != null) { 4115 for (ScanDetail scanDetail : getScanDetailCache(config).values()) { 4116 if (scanDetail.getBSSIDString().equals(BSSID)) { 4117 if (enable) { 4118 scanDetail.getScanResult().setAutoJoinStatus(ScanResult.ENABLED); 4119 } else { 4120 // Black list the BSSID we were trying to join 4121 // so as the Roam state machine 4122 // doesn't pick it up over and over 4123 scanDetail.getScanResult().setAutoJoinStatus( 4124 ScanResult.AUTO_ROAM_DISABLED); 4125 found = true; 4126 } 4127 } 4128 } 4129 } 4130 } 4131 return found; 4132 } 4133 4134 int getMaxDhcpRetries() { 4135 return Settings.Global.getInt(mContext.getContentResolver(), 4136 Settings.Global.WIFI_MAX_DHCP_RETRY_COUNT, 4137 DEFAULT_MAX_DHCP_RETRIES); 4138 } 4139 4140 void clearBssidBlacklist() { 4141 mBssidBlacklist = new HashSet<String>(); 4142 mWifiNative.clearBlacklist(); 4143 mWifiNative.setBssidBlacklist(null); 4144 } 4145 4146 void blackListBssid(String BSSID) { 4147 if (BSSID == null) 4148 return; 4149 mBssidBlacklist.add(BSSID); 4150 // Blacklist at wpa_supplicant 4151 mWifiNative.addToBlacklist(BSSID); 4152 // Blacklist at firmware 4153 String list[] = new String[mBssidBlacklist.size()]; 4154 int count = 0; 4155 for (String bssid : mBssidBlacklist) { 4156 list[count++] = bssid; 4157 } 4158 mWifiNative.setBssidBlacklist(list); 4159 } 4160 4161 void handleSSIDStateChange(int netId, boolean enabled, String message, String BSSID) { 4162 WifiConfiguration config = mConfiguredNetworks.get(netId); 4163 if (config != null) { 4164 if (enabled) { 4165 loge("SSID re-enabled for " + config.configKey() + 4166 " had autoJoinStatus=" + Integer.toString(config.autoJoinStatus) 4167 + " self added " + config.selfAdded + " ephemeral " + config.ephemeral); 4168 //TODO: http://b/16381983 Fix Wifi Network Blacklisting 4169 //TODO: really I don't know if re-enabling is right but we 4170 //TODO: should err on the side of trying to connect 4171 //TODO: even if the attempt will fail 4172 if (config.autoJoinStatus == WifiConfiguration.AUTO_JOIN_DISABLED_ON_AUTH_FAILURE) { 4173 config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 4174 } 4175 } else { 4176 loge("SSID temp disabled for " + config.configKey() + 4177 " had autoJoinStatus=" + Integer.toString(config.autoJoinStatus) 4178 + " self added " + config.selfAdded + " ephemeral " + config.ephemeral); 4179 if (message != null) { 4180 loge(" message=" + message); 4181 } 4182 if (config.selfAdded && config.lastConnected == 0) { 4183 // This is a network we self added, and we never succeeded, 4184 // the user did not create this network and never entered its credentials, 4185 // so we want to be very aggressive in disabling it completely. 4186 removeConfigAndSendBroadcastIfNeeded(config.networkId); 4187 } else { 4188 if (message != null) { 4189 if (message.contains("no identity")) { 4190 config.setAutoJoinStatus( 4191 WifiConfiguration.AUTO_JOIN_DISABLED_NO_CREDENTIALS); 4192 if (DBG) { 4193 loge("no identity blacklisted " + config.configKey() + " to " 4194 + Integer.toString(config.autoJoinStatus)); 4195 } 4196 } else if (message.contains("WRONG_KEY") 4197 || message.contains("AUTH_FAILED")) { 4198 // This configuration has received an auth failure, so disable it 4199 // temporarily because we don't want auto-join to try it out. 4200 // this network may be re-enabled by the "usual" 4201 // enableAllNetwork function 4202 config.numAuthFailures++; 4203 if (config.numAuthFailures > maxAuthErrorsToBlacklist) { 4204 config.setAutoJoinStatus 4205 (WifiConfiguration.AUTO_JOIN_DISABLED_ON_AUTH_FAILURE); 4206 disableNetwork(netId, 4207 WifiConfiguration.DISABLED_AUTH_FAILURE); 4208 loge("Authentication failure, blacklist " + config.configKey() + " " 4209 + Integer.toString(config.networkId) 4210 + " num failures " + config.numAuthFailures); 4211 } 4212 } else if (message.contains("DHCP FAILURE")) { 4213 config.numIpConfigFailures++; 4214 config.lastConnectionFailure = System.currentTimeMillis(); 4215 int maxRetries = getMaxDhcpRetries(); 4216 // maxRetries == 0 means keep trying forever 4217 if (maxRetries > 0 && config.numIpConfigFailures > maxRetries) { 4218 /** 4219 * If we've exceeded the maximum number of retries for DHCP 4220 * to a given network, disable the network 4221 */ 4222 config.setAutoJoinStatus 4223 (WifiConfiguration.AUTO_JOIN_DISABLED_ON_AUTH_FAILURE); 4224 disableNetwork(netId, WifiConfiguration.DISABLED_DHCP_FAILURE); 4225 loge("DHCP failure, blacklist " + config.configKey() + " " 4226 + Integer.toString(config.networkId) 4227 + " num failures " + config.numIpConfigFailures); 4228 } 4229 4230 // Also blacklist the BSSId if we find it 4231 ScanResult result = null; 4232 String bssidDbg = ""; 4233 if (getScanDetailCache(config) != null && BSSID != null) { 4234 result = getScanDetailCache(config).get(BSSID); 4235 } 4236 if (result != null) { 4237 result.numIpConfigFailures ++; 4238 bssidDbg = BSSID + " ipfail=" + result.numIpConfigFailures; 4239 if (result.numIpConfigFailures > 3) { 4240 // Tell supplicant to stop trying this BSSID 4241 mWifiNative.addToBlacklist(BSSID); 4242 result.setAutoJoinStatus(ScanResult.AUTO_JOIN_DISABLED); 4243 } 4244 } 4245 4246 if (DBG) { 4247 loge("blacklisted " + config.configKey() + " to " 4248 + config.autoJoinStatus 4249 + " due to IP config failures, count=" 4250 + config.numIpConfigFailures 4251 + " disableReason=" + config.disableReason 4252 + " " + bssidDbg); 4253 } 4254 } else if (message.contains("CONN_FAILED")) { 4255 config.numConnectionFailures++; 4256 if (config.numConnectionFailures > maxConnectionErrorsToBlacklist) { 4257 config.setAutoJoinStatus 4258 (WifiConfiguration.AUTO_JOIN_DISABLED_ON_AUTH_FAILURE); 4259 disableNetwork(netId, 4260 WifiConfiguration.DISABLED_ASSOCIATION_REJECT); 4261 loge("Connection failure, blacklist " + config.configKey() + " " 4262 + config.networkId 4263 + " num failures " + config.numConnectionFailures); 4264 } 4265 } 4266 message.replace("\n", ""); 4267 message.replace("\r", ""); 4268 config.lastFailure = message; 4269 } 4270 } 4271 } 4272 } 4273 } 4274 4275 boolean installKeys(WifiEnterpriseConfig config, String name) { 4276 boolean ret = true; 4277 String privKeyName = Credentials.USER_PRIVATE_KEY + name; 4278 String userCertName = Credentials.USER_CERTIFICATE + name; 4279 String caCertName = Credentials.CA_CERTIFICATE + name; 4280 if (config.getClientCertificate() != null) { 4281 byte[] privKeyData = config.getClientPrivateKey().getEncoded(); 4282 if (isHardwareBackedKey(config.getClientPrivateKey())) { 4283 // Hardware backed key store is secure enough to store keys un-encrypted, this 4284 // removes the need for user to punch a PIN to get access to these keys 4285 if (DBG) Log.d(TAG, "importing keys " + name + " in hardware backed store"); 4286 ret = mKeyStore.importKey(privKeyName, privKeyData, android.os.Process.WIFI_UID, 4287 KeyStore.FLAG_NONE); 4288 } else { 4289 // Software backed key store is NOT secure enough to store keys un-encrypted. 4290 // Save keys encrypted so they are protected with user's PIN. User will 4291 // have to unlock phone before being able to use these keys and connect to 4292 // networks. 4293 if (DBG) Log.d(TAG, "importing keys " + name + " in software backed store"); 4294 ret = mKeyStore.importKey(privKeyName, privKeyData, Process.WIFI_UID, 4295 KeyStore.FLAG_ENCRYPTED); 4296 } 4297 if (ret == false) { 4298 return ret; 4299 } 4300 4301 ret = putCertInKeyStore(userCertName, config.getClientCertificate()); 4302 if (ret == false) { 4303 // Remove private key installed 4304 mKeyStore.delete(privKeyName, Process.WIFI_UID); 4305 return ret; 4306 } 4307 } 4308 4309 if (config.getCaCertificate() != null) { 4310 ret = putCertInKeyStore(caCertName, config.getCaCertificate()); 4311 if (ret == false) { 4312 if (config.getClientCertificate() != null) { 4313 // Remove client key+cert 4314 mKeyStore.delete(privKeyName, Process.WIFI_UID); 4315 mKeyStore.delete(userCertName, Process.WIFI_UID); 4316 } 4317 return ret; 4318 } 4319 } 4320 4321 // Set alias names 4322 if (config.getClientCertificate() != null) { 4323 config.setClientCertificateAlias(name); 4324 config.resetClientKeyEntry(); 4325 } 4326 4327 if (config.getCaCertificate() != null) { 4328 config.setCaCertificateAlias(name); 4329 config.resetCaCertificate(); 4330 } 4331 4332 return ret; 4333 } 4334 4335 private boolean putCertInKeyStore(String name, Certificate cert) { 4336 try { 4337 byte[] certData = Credentials.convertToPem(cert); 4338 if (DBG) Log.d(TAG, "putting certificate " + name + " in keystore"); 4339 return mKeyStore.put(name, certData, Process.WIFI_UID, KeyStore.FLAG_NONE); 4340 4341 } catch (IOException e1) { 4342 return false; 4343 } catch (CertificateException e2) { 4344 return false; 4345 } 4346 } 4347 4348 void removeKeys(WifiEnterpriseConfig config) { 4349 String client = config.getClientCertificateAlias(); 4350 // a valid client certificate is configured 4351 if (!TextUtils.isEmpty(client)) { 4352 if (DBG) Log.d(TAG, "removing client private key and user cert"); 4353 mKeyStore.delete(Credentials.USER_PRIVATE_KEY + client, Process.WIFI_UID); 4354 mKeyStore.delete(Credentials.USER_CERTIFICATE + client, Process.WIFI_UID); 4355 } 4356 4357 String ca = config.getCaCertificateAlias(); 4358 // a valid ca certificate is configured 4359 if (!TextUtils.isEmpty(ca)) { 4360 if (DBG) Log.d(TAG, "removing CA cert"); 4361 mKeyStore.delete(Credentials.CA_CERTIFICATE + ca, Process.WIFI_UID); 4362 } 4363 } 4364 4365 4366 /** Migrates the old style TLS config to the new config style. This should only be used 4367 * when restoring an old wpa_supplicant.conf or upgrading from a previous 4368 * platform version. 4369 * @return true if the config was updated 4370 * @hide 4371 */ 4372 boolean migrateOldEapTlsNative(WifiEnterpriseConfig config, int netId) { 4373 String oldPrivateKey = mWifiNative.getNetworkVariable(netId, OLD_PRIVATE_KEY_NAME); 4374 /* 4375 * If the old configuration value is not present, then there is nothing 4376 * to do. 4377 */ 4378 if (TextUtils.isEmpty(oldPrivateKey)) { 4379 return false; 4380 } else { 4381 // Also ignore it if it's empty quotes. 4382 oldPrivateKey = removeDoubleQuotes(oldPrivateKey); 4383 if (TextUtils.isEmpty(oldPrivateKey)) { 4384 return false; 4385 } 4386 } 4387 4388 config.setFieldValue(WifiEnterpriseConfig.ENGINE_KEY, WifiEnterpriseConfig.ENGINE_ENABLE); 4389 config.setFieldValue(WifiEnterpriseConfig.ENGINE_ID_KEY, 4390 WifiEnterpriseConfig.ENGINE_ID_KEYSTORE); 4391 4392 /* 4393 * The old key started with the keystore:// URI prefix, but we don't 4394 * need that anymore. Trim it off if it exists. 4395 */ 4396 final String keyName; 4397 if (oldPrivateKey.startsWith(WifiEnterpriseConfig.KEYSTORE_URI)) { 4398 keyName = new String( 4399 oldPrivateKey.substring(WifiEnterpriseConfig.KEYSTORE_URI.length())); 4400 } else { 4401 keyName = oldPrivateKey; 4402 } 4403 config.setFieldValue(WifiEnterpriseConfig.PRIVATE_KEY_ID_KEY, keyName); 4404 4405 mWifiNative.setNetworkVariable(netId, WifiEnterpriseConfig.ENGINE_KEY, 4406 config.getFieldValue(WifiEnterpriseConfig.ENGINE_KEY, "")); 4407 4408 mWifiNative.setNetworkVariable(netId, WifiEnterpriseConfig.ENGINE_ID_KEY, 4409 config.getFieldValue(WifiEnterpriseConfig.ENGINE_ID_KEY, "")); 4410 4411 mWifiNative.setNetworkVariable(netId, WifiEnterpriseConfig.PRIVATE_KEY_ID_KEY, 4412 config.getFieldValue(WifiEnterpriseConfig.PRIVATE_KEY_ID_KEY, "")); 4413 4414 // Remove old private_key string so we don't run this again. 4415 mWifiNative.setNetworkVariable(netId, OLD_PRIVATE_KEY_NAME, EMPTY_VALUE); 4416 4417 return true; 4418 } 4419 4420 /** Migrate certs from global pool to wifi UID if not already done */ 4421 void migrateCerts(WifiEnterpriseConfig config) { 4422 String client = config.getClientCertificateAlias(); 4423 // a valid client certificate is configured 4424 if (!TextUtils.isEmpty(client)) { 4425 if (!mKeyStore.contains(Credentials.USER_PRIVATE_KEY + client, Process.WIFI_UID)) { 4426 mKeyStore.duplicate(Credentials.USER_PRIVATE_KEY + client, -1, 4427 Credentials.USER_PRIVATE_KEY + client, Process.WIFI_UID); 4428 mKeyStore.duplicate(Credentials.USER_CERTIFICATE + client, -1, 4429 Credentials.USER_CERTIFICATE + client, Process.WIFI_UID); 4430 } 4431 } 4432 4433 String ca = config.getCaCertificateAlias(); 4434 // a valid ca certificate is configured 4435 if (!TextUtils.isEmpty(ca)) { 4436 if (!mKeyStore.contains(Credentials.CA_CERTIFICATE + ca, Process.WIFI_UID)) { 4437 mKeyStore.duplicate(Credentials.CA_CERTIFICATE + ca, -1, 4438 Credentials.CA_CERTIFICATE + ca, Process.WIFI_UID); 4439 } 4440 } 4441 } 4442 4443 private void readNetworkBitsetVariable(int netId, BitSet variable, String varName, 4444 String[] strings) { 4445 String value = mWifiNative.getNetworkVariable(netId, varName); 4446 if (!TextUtils.isEmpty(value)) { 4447 variable.clear(); 4448 String vals[] = value.split(" "); 4449 for (String val : vals) { 4450 int index = lookupString(val, strings); 4451 if (0 <= index) { 4452 variable.set(index); 4453 } 4454 } 4455 } 4456 } 4457} 4458