WifiConfigStore.java revision 4ab8ee5e3ecfdc107892396178efa9176a72438f
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_WHILE_ASSOCIATED_KEY 332 = "ENABLE_AUTO_JOIN_WHILE_ASSOCIATED"; 333 private static final String ENABLE_CHIP_WAKE_UP_WHILE_ASSOCIATED_KEY 334 = "ENABLE_CHIP_WAKE_UP_WHILE_ASSOCIATED"; 335 private static final String ENABLE_RSSI_POLL_WHILE_ASSOCIATED_KEY 336 = "ENABLE_RSSI_POLL_WHILE_ASSOCIATED_KEY"; 337 338 public static final String idStringVarName = "id_str"; 339 340 // The Wifi verbose log is provided as a way to persist the verbose logging settings 341 // for testing purpose. 342 // It is not intended for normal use. 343 private static final String WIFI_VERBOSE_LOGS_KEY 344 = "WIFI_VERBOSE_LOGS"; 345 346 // As we keep deleted PSK WifiConfiguration for a while, the PSK of 347 // those deleted WifiConfiguration is set to this random unused PSK 348 private static final String DELETED_CONFIG_PSK = "Mjkd86jEMGn79KhKll298Uu7-deleted"; 349 350 public int maxTxPacketForFullScans = 8; 351 public int maxRxPacketForFullScans = 16; 352 353 public int maxTxPacketForPartialScans = 40; 354 public int maxRxPacketForPartialScans = 80; 355 356 public int associatedFullScanMaxIntervalMilli = 300000; 357 358 // Sane value for roam blacklisting (not switching to a network if already associated) 359 // 2 days 360 public int networkSwitchingBlackListPeriodMilli = 2 * 24 * 60 * 60 * 1000; 361 362 public int bandPreferenceBoostFactor5 = 5; // Boost by 5 dB per dB above threshold 363 public int bandPreferencePenaltyFactor5 = 2; // Penalize by 2 dB per dB below threshold 364 365 public int badLinkSpeed24 = 6; 366 public int badLinkSpeed5 = 12; 367 public int goodLinkSpeed24 = 24; 368 public int goodLinkSpeed5 = 36; 369 370 public int maxAuthErrorsToBlacklist = 4; 371 public int maxConnectionErrorsToBlacklist = 4; 372 public int wifiConfigBlacklistMinTimeMilli = 1000 * 60 * 5; 373 374 // How long a disconnected config remain considered as the last user selection 375 public int wifiConfigLastSelectionHysteresis = 1000 * 60 * 3; 376 377 // Boost RSSI values of associated networks 378 public int associatedHysteresisHigh = +14; 379 public int associatedHysteresisLow = +8; 380 381 boolean showNetworks = true; // TODO set this back to false, used for debugging 17516271 382 383 public boolean roamOnAny = false; 384 public boolean onlyLinkSameCredentialConfigurations = true; 385 386 public boolean enableLinkDebouncing = true; 387 public boolean enable5GHzPreference = true; 388 public boolean enableWifiCellularHandoverUserTriggeredAdjustment = true; 389 390 public int currentNetworkBoost = 25; 391 public int scanResultRssiLevelPatchUp = -85; 392 393 public static final int maxNumScanCacheEntries = 128; 394 395 public final AtomicBoolean enableHalBasedPno = new AtomicBoolean(false); 396 public final AtomicBoolean enableSsidWhitelist = new AtomicBoolean(false); 397 public final AtomicBoolean enableAutoJoinWhenAssociated = new AtomicBoolean(true); 398 public final AtomicBoolean enableFullBandScanWhenAssociated = new AtomicBoolean(true); 399 public final AtomicBoolean enableChipWakeUpWhenAssociated = new AtomicBoolean(true); 400 public final AtomicBoolean enableRssiPollWhenAssociated = new AtomicBoolean(true); 401 public final AtomicInteger thresholdInitialAutoJoinAttemptMin5RSSI = 402 new AtomicInteger(WifiConfiguration.INITIAL_AUTO_JOIN_ATTEMPT_MIN_5); 403 public final AtomicInteger thresholdInitialAutoJoinAttemptMin24RSSI = 404 new AtomicInteger(WifiConfiguration.INITIAL_AUTO_JOIN_ATTEMPT_MIN_24); 405 public final AtomicInteger thresholdUnblacklistThreshold5Hard 406 = new AtomicInteger(WifiConfiguration.UNBLACKLIST_THRESHOLD_5_HARD); 407 public final AtomicInteger thresholdUnblacklistThreshold5Soft 408 = new AtomicInteger(WifiConfiguration.UNBLACKLIST_THRESHOLD_5_SOFT); 409 public final AtomicInteger thresholdUnblacklistThreshold24Hard 410 = new AtomicInteger(WifiConfiguration.UNBLACKLIST_THRESHOLD_24_HARD); 411 public final AtomicInteger thresholdUnblacklistThreshold24Soft 412 = new AtomicInteger(WifiConfiguration.UNBLACKLIST_THRESHOLD_24_SOFT); 413 public final AtomicInteger thresholdGoodRssi5 = 414 new AtomicInteger(WifiConfiguration.GOOD_RSSI_5); 415 public final AtomicInteger thresholdLowRssi5 = new AtomicInteger(WifiConfiguration.LOW_RSSI_5); 416 public final AtomicInteger thresholdBadRssi5 = new AtomicInteger(WifiConfiguration.BAD_RSSI_5); 417 public final AtomicInteger thresholdGoodRssi24 = 418 new AtomicInteger(WifiConfiguration.GOOD_RSSI_24); 419 public final AtomicInteger thresholdLowRssi24 = new AtomicInteger(WifiConfiguration.LOW_RSSI_24); 420 public final AtomicInteger thresholdBadRssi24 = new AtomicInteger(WifiConfiguration.BAD_RSSI_24); 421 public final AtomicInteger maxTxPacketForNetworkSwitching = new AtomicInteger(40); 422 public final AtomicInteger maxRxPacketForNetworkSwitching = new AtomicInteger(80); 423 public final AtomicInteger enableVerboseLogging = new AtomicInteger(0); 424 public final AtomicInteger bandPreferenceBoostThreshold5 = 425 new AtomicInteger(WifiConfiguration.A_BAND_PREFERENCE_RSSI_THRESHOLD); 426 public final AtomicInteger associatedFullScanBackoff = 427 new AtomicInteger(12); // Will be divided by 8 by WifiStateMachine 428 public final AtomicInteger bandPreferencePenaltyThreshold5 = 429 new AtomicInteger(WifiConfiguration.G_BAND_PREFERENCE_RSSI_THRESHOLD); 430 public final AtomicInteger alwaysEnableScansWhileAssociated = new AtomicInteger(0); 431 public final AtomicInteger maxNumPassiveChannelsForPartialScans = new AtomicInteger(2); 432 public final AtomicInteger maxNumActiveChannelsForPartialScans = new AtomicInteger(6); 433 public final AtomicInteger wifiDisconnectedShortScanIntervalMilli = new AtomicInteger(15000); 434 public final AtomicInteger wifiDisconnectedLongScanIntervalMilli = new AtomicInteger(120000); 435 public final AtomicInteger wifiAssociatedShortScanIntervalMilli = new AtomicInteger(20000); 436 public final AtomicInteger wifiAssociatedLongScanIntervalMilli = new AtomicInteger(180000); 437 438 private static final Map<String, Object> sKeyMap = new HashMap<>(); 439 440 /** 441 * Regex pattern for extracting a connect choice. 442 * Matches a strings like the following: 443 * <configKey>=([0:9]+) 444 */ 445 private static Pattern mConnectChoice = 446 Pattern.compile("(.*)=([0-9]+)"); 447 448 449 /* Enterprise configuration keys */ 450 /** 451 * In old configurations, the "private_key" field was used. However, newer 452 * configurations use the key_id field with the engine_id set to "keystore". 453 * If this field is found in the configuration, the migration code is 454 * triggered. 455 */ 456 public static final String OLD_PRIVATE_KEY_NAME = "private_key"; 457 458 /** 459 * This represents an empty value of an enterprise field. 460 * NULL is used at wpa_supplicant to indicate an empty value 461 */ 462 static final String EMPTY_VALUE = "NULL"; 463 464 // Internal use only 465 private static final String[] ENTERPRISE_CONFIG_SUPPLICANT_KEYS = new String[] { 466 WifiEnterpriseConfig.EAP_KEY, WifiEnterpriseConfig.PHASE2_KEY, 467 WifiEnterpriseConfig.IDENTITY_KEY, WifiEnterpriseConfig.ANON_IDENTITY_KEY, 468 WifiEnterpriseConfig.PASSWORD_KEY, WifiEnterpriseConfig.CLIENT_CERT_KEY, 469 WifiEnterpriseConfig.CA_CERT_KEY, WifiEnterpriseConfig.SUBJECT_MATCH_KEY, 470 WifiEnterpriseConfig.ENGINE_KEY, WifiEnterpriseConfig.ENGINE_ID_KEY, 471 WifiEnterpriseConfig.PRIVATE_KEY_ID_KEY, WifiEnterpriseConfig.ALTSUBJECT_MATCH_KEY, 472 WifiEnterpriseConfig.DOM_SUFFIX_MATCH_KEY 473 }; 474 475 476 /** 477 * If Connectivity Service has triggered an unwanted network disconnect 478 */ 479 public long lastUnwantedNetworkDisconnectTimestamp = 0; 480 481 /** 482 * The maximum number of times we will retry a connection to an access point 483 * for which we have failed in acquiring an IP address from DHCP. A value of 484 * N means that we will make N+1 connection attempts in all. 485 * <p> 486 * See {@link Settings.Secure#WIFI_MAX_DHCP_RETRY_COUNT}. This is the default 487 * value if a Settings value is not present. 488 */ 489 private static final int DEFAULT_MAX_DHCP_RETRIES = 9; 490 491 492 private final LocalLog mLocalLog; 493 private final WpaConfigFileObserver mFileObserver; 494 495 private WifiNative mWifiNative; 496 private final KeyStore mKeyStore = KeyStore.getInstance(); 497 498 /** 499 * The lastSelectedConfiguration is used to remember which network 500 * was selected last by the user. 501 * The connection to this network may not be successful, as well 502 * the selection (i.e. network priority) might not be persisted. 503 * WiFi state machine is the only object that sets this variable. 504 */ 505 private String lastSelectedConfiguration = null; 506 507 /** 508 * Cached PNO list, it is updated when WifiConfiguration changes due to user input. 509 */ 510 ArrayList<WifiNative.WifiPnoNetwork> mCachedPnoList 511 = new ArrayList<WifiNative.WifiPnoNetwork>(); 512 513 /* 514 * BSSID blacklist, i.e. list of BSSID we want to avoid 515 */ 516 HashSet<String> mBssidBlacklist = new HashSet<String>(); 517 518 /* 519 * Lost config list, whenever we read a config from networkHistory.txt that was not in 520 * wpa_supplicant.conf 521 */ 522 HashSet<String> mLostConfigsDbg = new HashSet<String>(); 523 524 private final AnqpCache mAnqpCache; 525 private final SupplicantBridge mSupplicantBridge; 526 private final MOManager mMOManager; 527 private final SIMAccessor mSIMAccessor; 528 529 private WifiStateMachine mWifiStateMachine; 530 531 WifiConfigStore(Context c, WifiStateMachine w, WifiNative wn) { 532 mContext = c; 533 mWifiNative = wn; 534 mWifiStateMachine = w; 535 536 // A map for value setting in readAutoJoinConfig() - replacing the replicated code. 537 sKeyMap.put(ENABLE_AUTO_JOIN_WHILE_ASSOCIATED_KEY, enableAutoJoinWhenAssociated); 538 sKeyMap.put(ENABLE_FULL_BAND_SCAN_WHEN_ASSOCIATED_KEY, enableFullBandScanWhenAssociated); 539 sKeyMap.put(ENABLE_CHIP_WAKE_UP_WHILE_ASSOCIATED_KEY, enableChipWakeUpWhenAssociated); 540 sKeyMap.put(ENABLE_RSSI_POLL_WHILE_ASSOCIATED_KEY, enableRssiPollWhenAssociated); 541 sKeyMap.put(THRESHOLD_INITIAL_AUTO_JOIN_ATTEMPT_RSSI_MIN_5G_KEY, thresholdInitialAutoJoinAttemptMin5RSSI); 542 sKeyMap.put(THRESHOLD_INITIAL_AUTO_JOIN_ATTEMPT_RSSI_MIN_24G_KEY, thresholdInitialAutoJoinAttemptMin24RSSI); 543 sKeyMap.put(THRESHOLD_UNBLACKLIST_HARD_5G_KEY, thresholdUnblacklistThreshold5Hard); 544 sKeyMap.put(THRESHOLD_UNBLACKLIST_SOFT_5G_KEY, thresholdUnblacklistThreshold5Soft); 545 sKeyMap.put(THRESHOLD_UNBLACKLIST_HARD_24G_KEY, thresholdUnblacklistThreshold24Hard); 546 sKeyMap.put(THRESHOLD_UNBLACKLIST_SOFT_24G_KEY, thresholdUnblacklistThreshold24Soft); 547 sKeyMap.put(THRESHOLD_GOOD_RSSI_5_KEY, thresholdGoodRssi5); 548 sKeyMap.put(THRESHOLD_LOW_RSSI_5_KEY, thresholdLowRssi5); 549 sKeyMap.put(THRESHOLD_BAD_RSSI_5_KEY, thresholdBadRssi5); 550 sKeyMap.put(THRESHOLD_GOOD_RSSI_24_KEY, thresholdGoodRssi24); 551 sKeyMap.put(THRESHOLD_LOW_RSSI_24_KEY, thresholdLowRssi24); 552 sKeyMap.put(THRESHOLD_BAD_RSSI_24_KEY, thresholdBadRssi24); 553 sKeyMap.put(THRESHOLD_MAX_TX_PACKETS_FOR_NETWORK_SWITCHING_KEY, maxTxPacketForNetworkSwitching); 554 sKeyMap.put(THRESHOLD_MAX_RX_PACKETS_FOR_NETWORK_SWITCHING_KEY, maxRxPacketForNetworkSwitching); 555 sKeyMap.put(THRESHOLD_MAX_TX_PACKETS_FOR_FULL_SCANS_KEY, maxTxPacketForNetworkSwitching); 556 sKeyMap.put(THRESHOLD_MAX_RX_PACKETS_FOR_FULL_SCANS_KEY, maxRxPacketForNetworkSwitching); 557 sKeyMap.put(THRESHOLD_MAX_TX_PACKETS_FOR_PARTIAL_SCANS_KEY, maxTxPacketForNetworkSwitching); 558 sKeyMap.put(THRESHOLD_MAX_RX_PACKETS_FOR_PARTIAL_SCANS_KEY, maxRxPacketForNetworkSwitching); 559 sKeyMap.put(WIFI_VERBOSE_LOGS_KEY, enableVerboseLogging); 560 sKeyMap.put(A_BAND_PREFERENCE_RSSI_THRESHOLD_KEY, bandPreferenceBoostThreshold5); 561 sKeyMap.put(ASSOCIATED_PARTIAL_SCAN_PERIOD_KEY, wifiAssociatedShortScanIntervalMilli); 562 sKeyMap.put(ASSOCIATED_PARTIAL_SCAN_PERIOD_KEY, wifiAssociatedShortScanIntervalMilli); 563 564 sKeyMap.put(ASSOCIATED_FULL_SCAN_BACKOFF_KEY, associatedFullScanBackoff); 565 sKeyMap.put(G_BAND_PREFERENCE_RSSI_THRESHOLD_KEY, bandPreferencePenaltyThreshold5); 566 sKeyMap.put(ALWAYS_ENABLE_SCAN_WHILE_ASSOCIATED_KEY, alwaysEnableScansWhileAssociated); 567 sKeyMap.put(MAX_NUM_PASSIVE_CHANNELS_FOR_PARTIAL_SCANS_KEY, maxNumPassiveChannelsForPartialScans); 568 sKeyMap.put(MAX_NUM_ACTIVE_CHANNELS_FOR_PARTIAL_SCANS_KEY, maxNumActiveChannelsForPartialScans); 569 sKeyMap.put(ENABLE_HAL_BASED_PNO, enableHalBasedPno); 570 sKeyMap.put(ENABLE_HAL_BASED_PNO, enableSsidWhitelist); 571 572 if (showNetworks) { 573 mLocalLog = mWifiNative.getLocalLog(); 574 mFileObserver = new WpaConfigFileObserver(); 575 mFileObserver.startWatching(); 576 } else { 577 mLocalLog = null; 578 mFileObserver = null; 579 } 580 581 wifiAssociatedShortScanIntervalMilli.set(mContext.getResources().getInteger( 582 R.integer.config_wifi_associated_short_scan_interval)); 583 wifiAssociatedLongScanIntervalMilli.set(mContext.getResources().getInteger( 584 R.integer.config_wifi_associated_short_scan_interval)); 585 wifiDisconnectedShortScanIntervalMilli.set(mContext.getResources().getInteger( 586 R.integer.config_wifi_disconnected_short_scan_interval)); 587 wifiDisconnectedLongScanIntervalMilli.set(mContext.getResources().getInteger( 588 R.integer.config_wifi_disconnected_long_scan_interval)); 589 590 onlyLinkSameCredentialConfigurations = mContext.getResources().getBoolean( 591 R.bool.config_wifi_only_link_same_credential_configurations); 592 maxNumActiveChannelsForPartialScans.set(mContext.getResources().getInteger( 593 R.integer.config_wifi_framework_associated_partial_scan_max_num_active_channels)); 594 maxNumPassiveChannelsForPartialScans.set(mContext.getResources().getInteger( 595 R.integer.config_wifi_framework_associated_partial_scan_max_num_passive_channels)); 596 associatedFullScanMaxIntervalMilli = mContext.getResources().getInteger( 597 R.integer.config_wifi_framework_associated_full_scan_max_interval); 598 associatedFullScanBackoff.set(mContext.getResources().getInteger( 599 R.integer.config_wifi_framework_associated_full_scan_backoff)); 600 enableLinkDebouncing = mContext.getResources().getBoolean( 601 R.bool.config_wifi_enable_disconnection_debounce); 602 603 enable5GHzPreference = mContext.getResources().getBoolean( 604 R.bool.config_wifi_enable_5GHz_preference); 605 606 bandPreferenceBoostFactor5 = mContext.getResources().getInteger( 607 R.integer.config_wifi_framework_5GHz_preference_boost_factor); 608 bandPreferencePenaltyFactor5 = mContext.getResources().getInteger( 609 R.integer.config_wifi_framework_5GHz_preference_penalty_factor); 610 611 bandPreferencePenaltyThreshold5.set(mContext.getResources().getInteger( 612 R.integer.config_wifi_framework_5GHz_preference_penalty_threshold)); 613 bandPreferenceBoostThreshold5.set(mContext.getResources().getInteger( 614 R.integer.config_wifi_framework_5GHz_preference_boost_threshold)); 615 616 associatedHysteresisHigh = mContext.getResources().getInteger( 617 R.integer.config_wifi_framework_current_association_hysteresis_high); 618 associatedHysteresisLow = mContext.getResources().getInteger( 619 R.integer.config_wifi_framework_current_association_hysteresis_low); 620 621 thresholdBadRssi5.set(mContext.getResources().getInteger( 622 R.integer.config_wifi_framework_wifi_score_bad_rssi_threshold_5GHz)); 623 thresholdLowRssi5.set(mContext.getResources().getInteger( 624 R.integer.config_wifi_framework_wifi_score_low_rssi_threshold_5GHz)); 625 thresholdGoodRssi5.set(mContext.getResources().getInteger( 626 R.integer.config_wifi_framework_wifi_score_good_rssi_threshold_5GHz)); 627 thresholdBadRssi24.set(mContext.getResources().getInteger( 628 R.integer.config_wifi_framework_wifi_score_bad_rssi_threshold_24GHz)); 629 thresholdLowRssi24.set(mContext.getResources().getInteger( 630 R.integer.config_wifi_framework_wifi_score_low_rssi_threshold_24GHz)); 631 thresholdGoodRssi24.set(mContext.getResources().getInteger( 632 R.integer.config_wifi_framework_wifi_score_good_rssi_threshold_24GHz)); 633 634 enableWifiCellularHandoverUserTriggeredAdjustment = mContext.getResources().getBoolean( 635 R.bool.config_wifi_framework_cellular_handover_enable_user_triggered_adjustment); 636 637 badLinkSpeed24 = mContext.getResources().getInteger( 638 R.integer.config_wifi_framework_wifi_score_bad_link_speed_24); 639 badLinkSpeed5 = mContext.getResources().getInteger( 640 R.integer.config_wifi_framework_wifi_score_bad_link_speed_5); 641 goodLinkSpeed24 = mContext.getResources().getInteger( 642 R.integer.config_wifi_framework_wifi_score_good_link_speed_24); 643 goodLinkSpeed5 = mContext.getResources().getInteger( 644 R.integer.config_wifi_framework_wifi_score_good_link_speed_5); 645 646 maxAuthErrorsToBlacklist = mContext.getResources().getInteger( 647 R.integer.config_wifi_framework_max_auth_errors_to_blacklist); 648 maxConnectionErrorsToBlacklist = mContext.getResources().getInteger( 649 R.integer.config_wifi_framework_max_connection_errors_to_blacklist); 650 wifiConfigBlacklistMinTimeMilli = mContext.getResources().getInteger( 651 R.integer.config_wifi_framework_network_black_list_min_time_milli); 652 653 enableAutoJoinWhenAssociated.set(mContext.getResources().getBoolean( 654 R.bool.config_wifi_framework_enable_associated_network_selection)); 655 656 currentNetworkBoost = mContext.getResources().getInteger( 657 R.integer.config_wifi_framework_current_network_boost); 658 659 scanResultRssiLevelPatchUp = mContext.getResources().getInteger( 660 R.integer.config_wifi_framework_scan_result_rssi_level_patchup_value); 661 662 networkSwitchingBlackListPeriodMilli = mContext.getResources().getInteger( 663 R.integer.config_wifi_network_switching_blacklist_time); 664 665 enableHalBasedPno.set(mContext.getResources().getBoolean( 666 R.bool.config_wifi_hal_pno_enable)); 667 668 enableSsidWhitelist.set(mContext.getResources().getBoolean( 669 R.bool.config_wifi_ssid_white_list_enable)); 670 if (!enableHalBasedPno.get() && enableSsidWhitelist.get()) { 671 enableSsidWhitelist.set(false); 672 } 673 674 boolean hs2on = mContext.getResources().getBoolean(R.bool.config_wifi_hotspot2_enabled); 675 Log.d(Utils.hs2LogTag(getClass()), "Passpoint is " + (hs2on ? "enabled" : "disabled")); 676 677 mMOManager = new MOManager(new File(PPS_FILE), hs2on); 678 mAnqpCache = new AnqpCache(); 679 mSupplicantBridge = new SupplicantBridge(mWifiNative, this); 680 mScanDetailCaches = new HashMap<>(); 681 682 mSIMAccessor = new SIMAccessor(mContext); 683 } 684 685 public void trimANQPCache(boolean all) { 686 mAnqpCache.clear(all, DBG); 687 } 688 689 void enableVerboseLogging(int verbose) { 690 enableVerboseLogging.set(verbose); 691 if (verbose > 0) { 692 VDBG = true; 693 showNetworks = true; 694 } else { 695 VDBG = false; 696 } 697 if (verbose > 1) { 698 VVDBG = true; 699 } else { 700 VVDBG = false; 701 } 702 } 703 704 class WpaConfigFileObserver extends FileObserver { 705 706 public WpaConfigFileObserver() { 707 super(SUPPLICANT_CONFIG_FILE, CLOSE_WRITE); 708 } 709 710 @Override 711 public void onEvent(int event, String path) { 712 if (event == CLOSE_WRITE) { 713 File file = new File(SUPPLICANT_CONFIG_FILE); 714 if (VDBG) localLog("wpa_supplicant.conf changed; new size = " + file.length()); 715 } 716 } 717 } 718 719 720 /** 721 * Fetch the list of configured networks 722 * and enable all stored networks in supplicant. 723 */ 724 void loadAndEnableAllNetworks() { 725 if (DBG) log("Loading config and enabling all networks "); 726 loadConfiguredNetworks(); 727 enableAllNetworks(); 728 } 729 730 int getConfiguredNetworksSize() { 731 return mConfiguredNetworks.size(); 732 } 733 734 private List<WifiConfiguration> 735 getConfiguredNetworks(Map<String, String> pskMap) { 736 List<WifiConfiguration> networks = new ArrayList<>(); 737 for(WifiConfiguration config : mConfiguredNetworks.values()) { 738 WifiConfiguration newConfig = new WifiConfiguration(config); 739 // When updating this condition, update WifiStateMachine's CONNECT_NETWORK handler to 740 // correctly handle updating existing configs that are filtered out here. 741 if (config.autoJoinStatus == WifiConfiguration.AUTO_JOIN_DELETED || config.ephemeral) { 742 // Do not enumerate and return this configuration to any one, 743 // for instance WiFi Picker. 744 // instead treat it as unknown. the configuration can still be retrieved 745 // directly by the key or networkId 746 continue; 747 } 748 749 if (pskMap != null && config.allowedKeyManagement != null 750 && config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_PSK) 751 && pskMap.containsKey(config.SSID)) { 752 newConfig.preSharedKey = pskMap.get(config.SSID); 753 } 754 networks.add(newConfig); 755 } 756 return networks; 757 } 758 759 /** 760 * This function returns all configuration, and is used for cebug and creating bug reports. 761 */ 762 private List<WifiConfiguration> 763 getAllConfiguredNetworks() { 764 List<WifiConfiguration> networks = new ArrayList<>(); 765 for(WifiConfiguration config : mConfiguredNetworks.values()) { 766 WifiConfiguration newConfig = new WifiConfiguration(config); 767 networks.add(newConfig); 768 } 769 return networks; 770 } 771 772 /** 773 * Fetch the list of currently configured networks 774 * @return List of networks 775 */ 776 List<WifiConfiguration> getConfiguredNetworks() { 777 return getConfiguredNetworks(null); 778 } 779 780 /** 781 * Fetch the list of currently configured networks, filled with real preSharedKeys 782 * @return List of networks 783 */ 784 List<WifiConfiguration> getPrivilegedConfiguredNetworks() { 785 Map<String, String> pskMap = getCredentialsBySsidMap(); 786 return getConfiguredNetworks(pskMap); 787 } 788 789 /** 790 * Find matching network for this scanResult 791 */ 792 WifiConfiguration getMatchingConfig(ScanResult scanResult) { 793 if (scanResult == null) { 794 return null; 795 } 796 for (Map.Entry entry : mScanDetailCaches.entrySet()) { 797 Integer netId = (Integer) entry.getKey(); 798 ScanDetailCache cache = (ScanDetailCache) entry.getValue(); 799 WifiConfiguration config = getWifiConfiguration(netId); 800 if (config == null) 801 continue; 802 if (cache.get(scanResult.BSSID) != null) { 803 return config; 804 } 805 } 806 807 return null; 808 } 809 810 /** 811 * Fetch the preSharedKeys for all networks. 812 * @return a map from Ssid to preSharedKey. 813 */ 814 private Map<String, String> getCredentialsBySsidMap() { 815 return readNetworkVariablesFromSupplicantFile("psk"); 816 } 817 818 /** 819 * Fetch the list of currently configured networks that were recently seen 820 * 821 * @return List of networks 822 */ 823 List<WifiConfiguration> getRecentConfiguredNetworks(int milli, boolean copy) { 824 List<WifiConfiguration> networks = new ArrayList<WifiConfiguration>(); 825 826 for (WifiConfiguration config : mConfiguredNetworks.values()) { 827 if (config.autoJoinStatus == WifiConfiguration.AUTO_JOIN_DELETED || config.ephemeral) { 828 // Do not enumerate and return this configuration to any one, 829 // instead treat it as unknown. the configuration can still be retrieved 830 // directly by the key or networkId 831 continue; 832 } 833 834 // Calculate the RSSI for scan results that are more recent than milli 835 ScanDetailCache cache = getScanDetailCache(config); 836 if (cache == null) { 837 continue; 838 } 839 config.setVisibility(cache.getVisibility(milli)); 840 if (config.visibility == null) { 841 continue; 842 } 843 if (config.visibility.rssi5 == WifiConfiguration.INVALID_RSSI && 844 config.visibility.rssi24 == WifiConfiguration.INVALID_RSSI) { 845 continue; 846 } 847 if (copy) { 848 networks.add(new WifiConfiguration(config)); 849 } else { 850 networks.add(config); 851 } 852 } 853 return networks; 854 } 855 856 /** 857 * Update the configuration and BSSID with latest RSSI value. 858 */ 859 void updateConfiguration(WifiInfo info) { 860 WifiConfiguration config = getWifiConfiguration(info.getNetworkId()); 861 if (config != null && getScanDetailCache(config) != null) { 862 ScanDetail scanDetail = getScanDetailCache(config).getScanDetail(info.getBSSID()); 863 if (scanDetail != null) { 864 ScanResult result = scanDetail.getScanResult(); 865 long previousSeen = result.seen; 866 int previousRssi = result.level; 867 868 // Update the scan result 869 scanDetail.setSeen(); 870 result.level = info.getRssi(); 871 872 // Average the RSSI value 873 result.averageRssi(previousRssi, previousSeen, 874 WifiAutoJoinController.mScanResultMaximumAge); 875 if (VDBG) { 876 loge("updateConfiguration freq=" + result.frequency 877 + " BSSID=" + result.BSSID 878 + " RSSI=" + result.level 879 + " " + config.configKey()); 880 } 881 } 882 } 883 } 884 885 /** 886 * get the Wificonfiguration for this netId 887 * 888 * @return Wificonfiguration 889 */ 890 WifiConfiguration getWifiConfiguration(int netId) { 891 return mConfiguredNetworks.get(netId); 892 } 893 894 /** 895 * Get the Wificonfiguration for this key 896 * @return Wificonfiguration 897 */ 898 WifiConfiguration getWifiConfiguration(String key) { 899 return mConfiguredNetworks.getByConfigKey(key); 900 } 901 902 /** 903 * Enable all networks and save config. This will be a no-op if the list 904 * of configured networks indicates all networks as being enabled 905 */ 906 void enableAllNetworks() { 907 long now = System.currentTimeMillis(); 908 boolean networkEnabledStateChanged = false; 909 910 for(WifiConfiguration config : mConfiguredNetworks.values()) { 911 912 if(config != null && config.status == Status.DISABLED && !config.ephemeral 913 && (config.autoJoinStatus 914 <= WifiConfiguration.AUTO_JOIN_DISABLED_ON_AUTH_FAILURE)) { 915 916 // Wait for 5 minutes before reenabling config that have known, repeated connection 917 // or DHCP failures 918 if (config.disableReason == WifiConfiguration.DISABLED_DHCP_FAILURE 919 || config.disableReason == WifiConfiguration.DISABLED_ASSOCIATION_REJECT 920 || config.disableReason == WifiConfiguration.DISABLED_AUTH_FAILURE) { 921 if (config.blackListTimestamp != 0 922 && now > config.blackListTimestamp 923 && (now - config.blackListTimestamp) < wifiConfigBlacklistMinTimeMilli) { 924 continue; 925 } 926 } 927 928 if(mWifiNative.enableNetwork(config.networkId, false)) { 929 networkEnabledStateChanged = true; 930 config.status = Status.ENABLED; 931 932 // Reset the blacklist condition 933 config.numConnectionFailures = 0; 934 config.numIpConfigFailures = 0; 935 config.numAuthFailures = 0; 936 937 // Reenable the wifi configuration 938 config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 939 } else { 940 loge("Enable network failed on " + config.networkId); 941 942 } 943 } 944 } 945 946 if (networkEnabledStateChanged) { 947 mWifiNative.saveConfig(); 948 sendConfiguredNetworksChangedBroadcast(); 949 } 950 } 951 952 private boolean setNetworkPriorityNative(int netId, int priority) { 953 return mWifiNative.setNetworkVariable(netId, 954 WifiConfiguration.priorityVarName, Integer.toString(priority)); 955 } 956 957 private boolean setSSIDNative(int netId, String ssid) { 958 return mWifiNative.setNetworkVariable(netId, WifiConfiguration.ssidVarName, 959 encodeSSID(ssid)); 960 } 961 962 public boolean updateLastConnectUid(WifiConfiguration config, int uid) { 963 if (config != null) { 964 if (config.lastConnectUid != uid) { 965 config.lastConnectUid = uid; 966 config.dirty = true; 967 return true; 968 } 969 } 970 return false; 971 } 972 973 /** 974 * Selects the specified network for connection. This involves 975 * updating the priority of all the networks and enabling the given 976 * network while disabling others. 977 * 978 * Selecting a network will leave the other networks disabled and 979 * a call to enableAllNetworks() needs to be issued upon a connection 980 * or a failure event from supplicant 981 * 982 * @param config network to select for connection 983 * @param updatePriorities makes config highest priority network 984 * @return false if the network id is invalid 985 */ 986 boolean selectNetwork(WifiConfiguration config, boolean updatePriorities, int uid) { 987 if (VDBG) localLog("selectNetwork", config.networkId); 988 if (config.networkId == INVALID_NETWORK_ID) return false; 989 990 // Reset the priority of each network at start or if it goes too high. 991 if (mLastPriority == -1 || mLastPriority > 1000000) { 992 for(WifiConfiguration config2 : mConfiguredNetworks.values()) { 993 if (updatePriorities) { 994 if (config2.networkId != INVALID_NETWORK_ID) { 995 config2.priority = 0; 996 setNetworkPriorityNative(config2.networkId, config.priority); 997 } 998 } 999 } 1000 mLastPriority = 0; 1001 } 1002 1003 // Set to the highest priority and save the configuration. 1004 if (updatePriorities) { 1005 config.priority = ++mLastPriority; 1006 setNetworkPriorityNative(config.networkId, config.priority); 1007 buildPnoList(); 1008 } 1009 1010 if (config.isPasspoint()) { 1011 /* need to slap on the SSID of selected bssid to work */ 1012 if (getScanDetailCache(config).size() != 0) { 1013 ScanDetail result = getScanDetailCache(config).getFirst(); 1014 if (result == null) { 1015 loge("Could not find scan result for " + config.BSSID); 1016 } else { 1017 log("Setting SSID for " + config.networkId + " to" + result.getSSID()); 1018 setSSIDNative(config.networkId, result.getSSID()); 1019 config.SSID = result.getSSID(); 1020 } 1021 1022 } else { 1023 loge("Could not find bssid for " + config); 1024 } 1025 } 1026 1027 if (updatePriorities) 1028 mWifiNative.saveConfig(); 1029 else 1030 mWifiNative.selectNetwork(config.networkId); 1031 1032 updateLastConnectUid(config, uid); 1033 writeKnownNetworkHistory(false); 1034 1035 /* Enable the given network while disabling all other networks */ 1036 enableNetworkWithoutBroadcast(config.networkId, true); 1037 1038 /* Avoid saving the config & sending a broadcast to prevent settings 1039 * from displaying a disabled list of networks */ 1040 return true; 1041 } 1042 1043 /** 1044 * Add/update the specified configuration and save config 1045 * 1046 * @param config WifiConfiguration to be saved 1047 * @return network update result 1048 */ 1049 NetworkUpdateResult saveNetwork(WifiConfiguration config, int uid) { 1050 WifiConfiguration conf; 1051 1052 // A new network cannot have null SSID 1053 if (config == null || (config.networkId == INVALID_NETWORK_ID && 1054 config.SSID == null)) { 1055 return new NetworkUpdateResult(INVALID_NETWORK_ID); 1056 } 1057 if (VDBG) localLog("WifiConfigStore: saveNetwork netId", config.networkId); 1058 if (VDBG) { 1059 loge("WifiConfigStore saveNetwork, size=" + mConfiguredNetworks.size() 1060 + " SSID=" + config.SSID 1061 + " Uid=" + Integer.toString(config.creatorUid) 1062 + "/" + Integer.toString(config.lastUpdateUid)); 1063 } 1064 1065 if (mDeletedEphemeralSSIDs.remove(config.SSID)) { 1066 if (VDBG) { 1067 loge("WifiConfigStore: removed from ephemeral blacklist: " + config.SSID); 1068 } 1069 // NOTE: This will be flushed to disk as part of the addOrUpdateNetworkNative call 1070 // below, since we're creating/modifying a config. 1071 } 1072 1073 boolean newNetwork = (config.networkId == INVALID_NETWORK_ID); 1074 NetworkUpdateResult result = addOrUpdateNetworkNative(config, uid); 1075 int netId = result.getNetworkId(); 1076 1077 if (VDBG) localLog("WifiConfigStore: saveNetwork got it back netId=", netId); 1078 1079 /* enable a new network */ 1080 if (newNetwork && netId != INVALID_NETWORK_ID) { 1081 if (VDBG) localLog("WifiConfigStore: will enable netId=", netId); 1082 1083 mWifiNative.enableNetwork(netId, false); 1084 conf = mConfiguredNetworks.get(netId); 1085 if (conf != null) 1086 conf.status = Status.ENABLED; 1087 } 1088 1089 conf = mConfiguredNetworks.get(netId); 1090 if (conf != null) { 1091 if (conf.autoJoinStatus != WifiConfiguration.AUTO_JOIN_ENABLED) { 1092 if (VDBG) localLog("WifiConfigStore: re-enabling: " + conf.SSID); 1093 1094 // reenable autojoin, since new information has been provided 1095 conf.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 1096 enableNetworkWithoutBroadcast(conf.networkId, false); 1097 } 1098 if (VDBG) { 1099 loge("WifiConfigStore: saveNetwork got config back netId=" 1100 + Integer.toString(netId) 1101 + " uid=" + Integer.toString(config.creatorUid)); 1102 } 1103 } 1104 1105 mWifiNative.saveConfig(); 1106 sendConfiguredNetworksChangedBroadcast(conf, result.isNewNetwork() ? 1107 WifiManager.CHANGE_REASON_ADDED : WifiManager.CHANGE_REASON_CONFIG_CHANGE); 1108 return result; 1109 } 1110 1111 /** 1112 * Firmware is roaming away from this BSSID, and this BSSID was on 5GHz, and it's RSSI was good, 1113 * this means we have a situation where we would want to remain on this BSSID but firmware 1114 * is not successful at it. 1115 * This situation is observed on a small number of Access Points, b/17960587 1116 * In that situation, blacklist this BSSID really hard so as framework will not attempt to 1117 * roam to it for the next 8 hours. We do not to keep flipping between 2.4 and 5GHz band.. 1118 * TODO: review the blacklisting strategy so as to make it softer and adaptive 1119 * @param info 1120 */ 1121 void driverRoamedFrom(WifiInfo info) { 1122 if (info != null 1123 && info.getBSSID() != null 1124 && ScanResult.is5GHz(info.getFrequency()) 1125 && info.getRssi() > (bandPreferenceBoostThreshold5.get() + 3)) { 1126 WifiConfiguration config = getWifiConfiguration(info.getNetworkId()); 1127 if (config != null) { 1128 if (getScanDetailCache(config) != null) { 1129 ScanResult result = getScanDetailCache(config).get(info.getBSSID()); 1130 if (result != null) { 1131 result.setAutoJoinStatus(ScanResult.AUTO_ROAM_DISABLED + 1); 1132 } 1133 } 1134 } 1135 } 1136 } 1137 1138 void noteRoamingFailure(WifiConfiguration config, int reason) { 1139 if (config == null) return; 1140 config.lastRoamingFailure = System.currentTimeMillis(); 1141 config.roamingFailureBlackListTimeMilli 1142 = 2 * (config.roamingFailureBlackListTimeMilli + 1000); 1143 if (config.roamingFailureBlackListTimeMilli 1144 > networkSwitchingBlackListPeriodMilli) { 1145 config.roamingFailureBlackListTimeMilli = 1146 networkSwitchingBlackListPeriodMilli; 1147 } 1148 config.lastRoamingFailureReason = reason; 1149 } 1150 1151 void saveWifiConfigBSSID(WifiConfiguration config) { 1152 // Sanity check the config is valid 1153 if (config == null || (config.networkId == INVALID_NETWORK_ID && 1154 config.SSID == null)) { 1155 return; 1156 } 1157 1158 // If an app specified a BSSID then dont over-write it 1159 if (config.BSSID != null && config.BSSID != "any") { 1160 return; 1161 } 1162 1163 // If autojoin specified a BSSID then write it in the network block 1164 if (config.autoJoinBSSID != null) { 1165 loge("saveWifiConfigBSSID Setting BSSID for " + config.configKey() 1166 + " to " + config.autoJoinBSSID); 1167 if (!mWifiNative.setNetworkVariable( 1168 config.networkId, 1169 WifiConfiguration.bssidVarName, 1170 config.autoJoinBSSID)) { 1171 loge("failed to set BSSID: " + config.autoJoinBSSID); 1172 } else if (config.autoJoinBSSID.equals("any")) { 1173 // Paranoia, we just want to make sure that we restore the config to normal 1174 mWifiNative.saveConfig(); 1175 } 1176 } 1177 } 1178 1179 1180 void updateStatus(int netId, DetailedState state) { 1181 if (netId != INVALID_NETWORK_ID) { 1182 WifiConfiguration config = mConfiguredNetworks.get(netId); 1183 if (config == null) return; 1184 switch (state) { 1185 case CONNECTED: 1186 config.status = Status.CURRENT; 1187 //we successfully connected, hence remove the blacklist 1188 config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 1189 break; 1190 case DISCONNECTED: 1191 //If network is already disabled, keep the status 1192 if (config.status == Status.CURRENT) { 1193 config.status = Status.ENABLED; 1194 } 1195 break; 1196 default: 1197 //do nothing, retain the existing state 1198 break; 1199 } 1200 } 1201 } 1202 1203 1204 /** 1205 * Disable an ephemeral SSID for the purpose of auto-joining thru scored. 1206 * This SSID will never be scored anymore. 1207 * The only way to "un-disable it" is if the user create a network for that SSID and then 1208 * forget it. 1209 * 1210 * @param SSID caller must ensure that the SSID passed thru this API match 1211 * the WifiConfiguration.SSID rules, and thus be surrounded by quotes. 1212 * @return the {@link WifiConfiguration} corresponding to this SSID, if any, so that we can 1213 * disconnect if this is the current network. 1214 */ 1215 WifiConfiguration disableEphemeralNetwork(String SSID) { 1216 if (SSID == null) { 1217 return null; 1218 } 1219 1220 WifiConfiguration foundConfig = mConfiguredNetworks.getEphemeral(SSID); 1221 1222 mDeletedEphemeralSSIDs.add(SSID); 1223 loge("Forget ephemeral SSID " + SSID + " num=" + mDeletedEphemeralSSIDs.size()); 1224 1225 if (foundConfig != null) { 1226 loge("Found ephemeral config in disableEphemeralNetwork: " + foundConfig.networkId); 1227 } 1228 1229 // Force a write, because the mDeletedEphemeralSSIDs list has changed even though the 1230 // configurations may not have. 1231 writeKnownNetworkHistory(true); 1232 1233 return foundConfig; 1234 } 1235 1236 /** 1237 * Forget the specified network and save config 1238 * 1239 * @param netId network to forget 1240 * @return {@code true} if it succeeds, {@code false} otherwise 1241 */ 1242 boolean forgetNetwork(int netId) { 1243 if (showNetworks) localLog("forgetNetwork", netId); 1244 1245 WifiConfiguration config = mConfiguredNetworks.get(netId); 1246 boolean remove = removeConfigAndSendBroadcastIfNeeded(netId); 1247 if (!remove) { 1248 //success but we dont want to remove the network from supplicant conf file 1249 return true; 1250 } 1251 if (mWifiNative.removeNetwork(netId)) { 1252 if (config != null && config.isPasspoint()) { 1253 writePasspointConfigs(config.FQDN, null); 1254 } 1255 mWifiNative.saveConfig(); 1256 writeKnownNetworkHistory(true); 1257 return true; 1258 } else { 1259 loge("Failed to remove network " + netId); 1260 return false; 1261 } 1262 } 1263 1264 /** 1265 * Add/update a network. Note that there is no saveConfig operation. 1266 * This function is retained for compatibility with the public 1267 * API. The more powerful saveNetwork() is used by the 1268 * state machine 1269 * 1270 * @param config wifi configuration to add/update 1271 * @return network Id 1272 */ 1273 int addOrUpdateNetwork(WifiConfiguration config, int uid) { 1274 if (showNetworks) localLog("addOrUpdateNetwork id=", config.networkId); 1275 //adding unconditional message to chase b/15111865 1276 Log.e(TAG, " key=" + config.configKey() + " netId=" + Integer.toString(config.networkId) 1277 + " uid=" + Integer.toString(config.creatorUid) 1278 + "/" + Integer.toString(config.lastUpdateUid)); 1279 1280 if (config.isPasspoint()) { 1281 /* create a temporary SSID with providerFriendlyName */ 1282 Long csum = getChecksum(config.FQDN); 1283 config.SSID = csum.toString(); 1284 config.enterpriseConfig.setDomainSuffixMatch(config.FQDN); 1285 } 1286 1287 NetworkUpdateResult result = addOrUpdateNetworkNative(config, uid); 1288 if (result.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 1289 WifiConfiguration conf = mConfiguredNetworks.get(result.getNetworkId()); 1290 if (conf != null) { 1291 sendConfiguredNetworksChangedBroadcast(conf, 1292 result.isNewNetwork ? WifiManager.CHANGE_REASON_ADDED : 1293 WifiManager.CHANGE_REASON_CONFIG_CHANGE); 1294 } 1295 } 1296 1297 return result.getNetworkId(); 1298 } 1299 1300 1301 /** 1302 * Get the Wifi PNO list 1303 * 1304 * @return list of WifiNative.WifiPnoNetwork 1305 */ 1306 private void buildPnoList() { 1307 mCachedPnoList = new ArrayList<WifiNative.WifiPnoNetwork>(); 1308 1309 ArrayList<WifiConfiguration> sortedWifiConfigurations 1310 = new ArrayList<WifiConfiguration>(getConfiguredNetworks()); 1311 Log.e(TAG, "buildPnoList sortedWifiConfigurations size " + sortedWifiConfigurations.size()); 1312 if (sortedWifiConfigurations.size() != 0) { 1313 // Sort by descending priority 1314 Collections.sort(sortedWifiConfigurations, new Comparator<WifiConfiguration>() { 1315 public int compare(WifiConfiguration a, WifiConfiguration b) { 1316 return a.priority >= b.priority ? 1 : -1; 1317 } 1318 }); 1319 } 1320 1321 for (WifiConfiguration config : sortedWifiConfigurations) { 1322 // Initialize the RSSI threshold with sane value: 1323 // Use the 2.4GHz threshold since most WifiConfigurations are dual bands 1324 // There is very little penalty with triggering too soon, i.e. if PNO finds a network 1325 // that has an RSSI too low for us to attempt joining it. 1326 int threshold = thresholdInitialAutoJoinAttemptMin24RSSI.get(); 1327 Log.e(TAG, "found sortedWifiConfigurations : " + config.configKey()); 1328 WifiNative.WifiPnoNetwork network = mWifiNative.new WifiPnoNetwork(config, threshold); 1329 mCachedPnoList.add(network); 1330 } 1331 } 1332 1333 String[] getWhiteListedSsids(WifiConfiguration config) { 1334 int num_ssids = 0; 1335 String nonQuoteSSID; 1336 int length; 1337 if (enableSsidWhitelist.get() == false) 1338 return null; 1339 List<String> list = new ArrayList<String>(); 1340 if (config == null) 1341 return null; 1342 if (config.linkedConfigurations == null) { 1343 return null; 1344 } 1345 if (config.SSID == null || TextUtils.isEmpty(config.SSID)) { 1346 return null; 1347 } 1348 for (String configKey : config.linkedConfigurations.keySet()) { 1349 1350 // Sanity check that the linked configuration is still valid 1351 WifiConfiguration link = getWifiConfiguration(configKey); 1352 if (link == null) { 1353 continue; 1354 } 1355 1356 if (link.autoJoinStatus != WifiConfiguration.AUTO_JOIN_ENABLED) { 1357 continue; 1358 } 1359 1360 if (link.hiddenSSID == true) { 1361 continue; 1362 } 1363 1364 if (link.SSID == null || TextUtils.isEmpty(link.SSID)) { 1365 continue; 1366 } 1367 1368 length = link.SSID.length(); 1369 if (length > 2 && (link.SSID.charAt(0) == '"') && link.SSID.charAt(length - 1) == '"') { 1370 nonQuoteSSID = link.SSID.substring(1, length - 1); 1371 } else { 1372 nonQuoteSSID = link.SSID; 1373 } 1374 1375 list.add(nonQuoteSSID); 1376 } 1377 1378 if (list.size() != 0) { 1379 length = config.SSID.length(); 1380 if (length > 2 && (config.SSID.charAt(0) == '"') 1381 && config.SSID.charAt(length - 1) == '"') { 1382 nonQuoteSSID = config.SSID.substring(1, length - 1); 1383 } else { 1384 nonQuoteSSID = config.SSID; 1385 } 1386 1387 list.add(nonQuoteSSID); 1388 } 1389 1390 return (String[])list.toArray(new String[0]); 1391 } 1392 1393 /** 1394 * Remove a network. Note that there is no saveConfig operation. 1395 * This function is retained for compatibility with the public 1396 * API. The more powerful forgetNetwork() is used by the 1397 * state machine for network removal 1398 * 1399 * @param netId network to be removed 1400 * @return {@code true} if it succeeds, {@code false} otherwise 1401 */ 1402 boolean removeNetwork(int netId) { 1403 if (showNetworks) localLog("removeNetwork", netId); 1404 WifiConfiguration config = mConfiguredNetworks.get(netId); 1405 boolean ret = mWifiNative.removeNetwork(netId); 1406 if (ret) { 1407 removeConfigAndSendBroadcastIfNeeded(netId); 1408 if (config != null && config.isPasspoint()) { 1409 writePasspointConfigs(config.FQDN, null); 1410 } 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 log("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 if (config.isPasspoint()) { 2339 break; 2340 } 2341 ssid = value; 2342 if (config.SSID != null && !config.SSID.equals(ssid)) { 2343 loge("Error parsing network history file, mismatched SSIDs"); 2344 config = null; //error 2345 ssid = null; 2346 } else { 2347 config.SSID = ssid; 2348 } 2349 break; 2350 case FQDN_KEY: 2351 // Check for literal 'null' to be backwards compatible. 2352 config.FQDN = value.equals("null") ? null : value; 2353 break; 2354 case DEFAULT_GW_KEY: 2355 config.defaultGwMacAddress = value; 2356 break; 2357 case STATUS_KEY: 2358 config.autoJoinStatus = Integer.parseInt(value); 2359 break; 2360 case SUPPLICANT_DISABLE_REASON_KEY: 2361 config.disableReason = Integer.parseInt(value); 2362 break; 2363 case SELF_ADDED_KEY: 2364 config.selfAdded = Boolean.parseBoolean(value); 2365 break; 2366 case DID_SELF_ADD_KEY: 2367 config.didSelfAdd = Boolean.parseBoolean(value); 2368 break; 2369 case NO_INTERNET_ACCESS_REPORTS_KEY: 2370 config.numNoInternetAccessReports = Integer.parseInt(value); 2371 break; 2372 case VALIDATED_INTERNET_ACCESS_KEY: 2373 config.validatedInternetAccess = Boolean.parseBoolean(value); 2374 break; 2375 case CREATION_TIME_KEY: 2376 config.creationTime = value; 2377 break; 2378 case UPDATE_TIME_KEY: 2379 config.updateTime = value; 2380 break; 2381 case EPHEMERAL_KEY: 2382 config.ephemeral = Boolean.parseBoolean(value); 2383 break; 2384 case CREATOR_UID_KEY: 2385 config.creatorUid = Integer.parseInt(value); 2386 break; 2387 case BLACKLIST_MILLI_KEY: 2388 config.blackListTimestamp = Long.parseLong(value); 2389 break; 2390 case NUM_CONNECTION_FAILURES_KEY: 2391 config.numConnectionFailures = Integer.parseInt(value); 2392 break; 2393 case NUM_IP_CONFIG_FAILURES_KEY: 2394 config.numIpConfigFailures = Integer.parseInt(value); 2395 break; 2396 case NUM_AUTH_FAILURES_KEY: 2397 config.numIpConfigFailures = Integer.parseInt(value); 2398 break; 2399 case SCORER_OVERRIDE_KEY: 2400 config.numScorerOverride = Integer.parseInt(value); 2401 break; 2402 case SCORER_OVERRIDE_AND_SWITCH_KEY: 2403 config.numScorerOverrideAndSwitchedNetwork = Integer.parseInt(value); 2404 break; 2405 case NUM_ASSOCIATION_KEY: 2406 config.numAssociation = Integer.parseInt(value); 2407 break; 2408 case JOIN_ATTEMPT_BOOST_KEY: 2409 config.autoJoinUseAggressiveJoinAttemptThreshold = 2410 Integer.parseInt(value); 2411 break; 2412 case CONNECT_UID_KEY: 2413 config.lastConnectUid = Integer.parseInt(value); 2414 break; 2415 case UPDATE_UID_KEY: 2416 config.lastUpdateUid = Integer.parseInt(value); 2417 break; 2418 case FAILURE_KEY: 2419 config.lastFailure = value; 2420 break; 2421 case PEER_CONFIGURATION_KEY: 2422 config.peerWifiConfiguration = value; 2423 break; 2424 case CHOICE_KEY: 2425 String configKey = ""; 2426 int choice = 0; 2427 Matcher match = mConnectChoice.matcher(value); 2428 if (!match.find()) { 2429 if (DBG) Log.d(TAG, "WifiConfigStore: connectChoice: " + 2430 " Couldnt match pattern : " + value); 2431 } else { 2432 configKey = match.group(1); 2433 try { 2434 choice = Integer.parseInt(match.group(2)); 2435 } catch (NumberFormatException e) { 2436 choice = 0; 2437 } 2438 if (choice > 0) { 2439 if (config.connectChoices == null) { 2440 config.connectChoices = new HashMap<>(); 2441 } 2442 config.connectChoices.put(configKey, choice); 2443 } 2444 } 2445 break; 2446 case LINK_KEY: 2447 if (config.linkedConfigurations == null) { 2448 config.linkedConfigurations = new HashMap<>(); 2449 } 2450 else { 2451 config.linkedConfigurations.put(value, -1); 2452 } 2453 break; 2454 case BSSID_KEY: 2455 status = 0; 2456 ssid = null; 2457 bssid = null; 2458 freq = 0; 2459 seen = 0; 2460 rssi = WifiConfiguration.INVALID_RSSI; 2461 caps = ""; 2462 break; 2463 case RSSI_KEY: 2464 rssi = Integer.parseInt(value); 2465 break; 2466 case BSSID_STATUS_KEY: 2467 status = Integer.parseInt(value); 2468 break; 2469 case FREQ_KEY: 2470 freq = Integer.parseInt(value); 2471 break; 2472 case DATE_KEY: 2473 /* 2474 * when reading the configuration from file we don't update the date 2475 * so as to avoid reading back stale or non-sensical data that would 2476 * depend on network time. 2477 * The date of a WifiConfiguration should only come from actual scan result. 2478 * 2479 String s = key.replace(FREQ_KEY, ""); 2480 seen = Integer.getInteger(s); 2481 */ 2482 break; 2483 case BSSID_KEY_END: 2484 if ((bssid != null) && (ssid != null)) { 2485 2486 if (getScanDetailCache(config) != null) { 2487 WifiSsid wssid = WifiSsid.createFromAsciiEncoded(ssid); 2488 ScanDetail scanDetail = new ScanDetail(wssid, bssid, 2489 caps, rssi, freq, (long) 0, seen); 2490 getScanDetailCache(config).put(scanDetail); 2491 scanDetail.getScanResult().autoJoinStatus = status; 2492 } 2493 } 2494 break; 2495 case DELETED_CRC32_KEY: 2496 mDeletedSSIDs.add(Long.parseLong(value)); 2497 break; 2498 case DELETED_EPHEMERAL_KEY: 2499 if (!TextUtils.isEmpty(value)) { 2500 mDeletedEphemeralSSIDs.add(value); 2501 } 2502 break; 2503 case CREATOR_NAME_KEY: 2504 config.creatorName = value; 2505 break; 2506 case UPDATE_NAME_KEY: 2507 config.lastUpdateName = value; 2508 break; 2509 case USER_APPROVED_KEY: 2510 config.userApproved = Integer.parseInt(value); 2511 break; 2512 } 2513 } 2514 } 2515 } catch (NumberFormatException e) { 2516 Log.e(TAG, "readNetworkHistory: failed to read, revert to default, " + e, e); 2517 } catch (EOFException e) { 2518 // do nothing 2519 } catch (IOException e) { 2520 Log.e(TAG, "readNetworkHistory: No config file, revert to default, " + e, e); 2521 } 2522 } 2523 2524 private void readAutoJoinConfig() { 2525 try (BufferedReader reader = new BufferedReader(new FileReader(autoJoinConfigFile))) { 2526 for (String key = reader.readLine(); key != null; key = reader.readLine()) { 2527 Log.d(TAG, "readAutoJoinConfig line: " + key); 2528 2529 int split = key.indexOf(':'); 2530 if (split < 0) { 2531 continue; 2532 } 2533 2534 String name = key.substring(0, split); 2535 Object reference = sKeyMap.get(name); 2536 if (reference == null) { 2537 continue; 2538 } 2539 2540 try { 2541 int value = Integer.parseInt(key.substring(split+1).trim()); 2542 if (reference.getClass() == AtomicBoolean.class) { 2543 ((AtomicBoolean)reference).set(value != 0); 2544 } 2545 else { 2546 ((AtomicInteger)reference).set(value); 2547 } 2548 Log.d(TAG,"readAutoJoinConfig: " + name + " = " + value); 2549 } 2550 catch (NumberFormatException nfe) { 2551 Log.d(TAG,"readAutoJoinConfig: incorrect format :" + key); 2552 } 2553 } 2554 } catch (IOException e) { 2555 loge("readAutoJoinStatus: Error parsing configuration" + e); 2556 } 2557 } 2558 2559 2560 private void writeIpAndProxyConfigurations() { 2561 final SparseArray<IpConfiguration> networks = new SparseArray<IpConfiguration>(); 2562 for(WifiConfiguration config : mConfiguredNetworks.values()) { 2563 if (!config.ephemeral && config.autoJoinStatus != WifiConfiguration.AUTO_JOIN_DELETED) { 2564 networks.put(configKey(config), config.getIpConfiguration()); 2565 } 2566 } 2567 2568 super.writeIpAndProxyConfigurations(ipConfigFile, networks); 2569 } 2570 2571 private void readIpAndProxyConfigurations() { 2572 SparseArray<IpConfiguration> networks = super.readIpAndProxyConfigurations(ipConfigFile); 2573 2574 if (networks == null || networks.size() == 0) { 2575 // IpConfigStore.readIpAndProxyConfigurations has already logged an error. 2576 return; 2577 } 2578 2579 for (int i = 0; i < networks.size(); i++) { 2580 int id = networks.keyAt(i); 2581 WifiConfiguration config = mConfiguredNetworks.getByConfigKeyID(id); 2582 // This is the only place the map is looked up through a (dangerous) hash-value! 2583 2584 if (config == null || config.autoJoinStatus == WifiConfiguration.AUTO_JOIN_DELETED || 2585 config.ephemeral) { 2586 loge("configuration found for missing network, nid=" + id 2587 +", ignored, networks.size=" + Integer.toString(networks.size())); 2588 } else { 2589 config.setIpConfiguration(networks.valueAt(i)); 2590 } 2591 } 2592 } 2593 2594 /* 2595 * Convert string to Hexadecimal before passing to wifi native layer 2596 * In native function "doCommand()" have trouble in converting Unicode character string to UTF8 2597 * conversion to hex is required because SSIDs can have space characters in them; 2598 * and that can confuses the supplicant because it uses space charaters as delimiters 2599 */ 2600 2601 public static String encodeSSID(String str){ 2602 return Utils.toHex(removeDoubleQuotes(str).getBytes(StandardCharsets.UTF_8)); 2603 } 2604 2605 private NetworkUpdateResult addOrUpdateNetworkNative(WifiConfiguration config, int uid) { 2606 /* 2607 * If the supplied networkId is INVALID_NETWORK_ID, we create a new empty 2608 * network configuration. Otherwise, the networkId should 2609 * refer to an existing configuration. 2610 */ 2611 2612 if (VDBG) localLog("addOrUpdateNetworkNative " + config.getPrintableSsid()); 2613 if (config.isPasspoint() && !mMOManager.isEnabled()) { 2614 Log.e(TAG, "Passpoint is not enabled"); 2615 return new NetworkUpdateResult(INVALID_NETWORK_ID); 2616 } 2617 2618 int netId = config.networkId; 2619 boolean newNetwork = false; 2620 // networkId of INVALID_NETWORK_ID means we want to create a new network 2621 if (netId == INVALID_NETWORK_ID) { 2622 WifiConfiguration savedConfig = mConfiguredNetworks.getByConfigKey(config.configKey()); 2623 if (savedConfig != null) { 2624 netId = savedConfig.networkId; 2625 } else { 2626 if (mMOManager.getHomeSP(config.FQDN) != null) { 2627 loge("addOrUpdateNetworkNative passpoint " + config.FQDN 2628 + " was found, but no network Id"); 2629 } 2630 newNetwork = true; 2631 netId = mWifiNative.addNetwork(); 2632 if (netId < 0) { 2633 loge("Failed to add a network!"); 2634 return new NetworkUpdateResult(INVALID_NETWORK_ID); 2635 } else { 2636 loge("addOrUpdateNetworkNative created netId=" + netId); 2637 } 2638 } 2639 } 2640 2641 boolean updateFailed = true; 2642 2643 setVariables: { 2644 2645 if (config.SSID != null && 2646 !mWifiNative.setNetworkVariable( 2647 netId, 2648 WifiConfiguration.ssidVarName, 2649 encodeSSID(config.SSID))) { 2650 loge("failed to set SSID: "+config.SSID); 2651 break setVariables; 2652 } 2653 2654 if (config.isPasspoint()) { 2655 if (!mWifiNative.setNetworkVariable( 2656 netId, 2657 idStringVarName, 2658 '"' + config.FQDN + '"')) { 2659 loge("failed to set id_str: " + config.FQDN); 2660 break setVariables; 2661 } 2662 } 2663 2664 if (config.BSSID != null) { 2665 log("Setting BSSID for " + config.configKey() + " to " + config.BSSID); 2666 if (!mWifiNative.setNetworkVariable( 2667 netId, 2668 WifiConfiguration.bssidVarName, 2669 config.BSSID)) { 2670 loge("failed to set BSSID: " + config.BSSID); 2671 break setVariables; 2672 } 2673 } 2674 2675 String allowedKeyManagementString = 2676 makeString(config.allowedKeyManagement, WifiConfiguration.KeyMgmt.strings); 2677 if (config.allowedKeyManagement.cardinality() != 0 && 2678 !mWifiNative.setNetworkVariable( 2679 netId, 2680 WifiConfiguration.KeyMgmt.varName, 2681 allowedKeyManagementString)) { 2682 loge("failed to set key_mgmt: "+ 2683 allowedKeyManagementString); 2684 break setVariables; 2685 } 2686 2687 String allowedProtocolsString = 2688 makeString(config.allowedProtocols, WifiConfiguration.Protocol.strings); 2689 if (config.allowedProtocols.cardinality() != 0 && 2690 !mWifiNative.setNetworkVariable( 2691 netId, 2692 WifiConfiguration.Protocol.varName, 2693 allowedProtocolsString)) { 2694 loge("failed to set proto: "+ 2695 allowedProtocolsString); 2696 break setVariables; 2697 } 2698 2699 String allowedAuthAlgorithmsString = 2700 makeString(config.allowedAuthAlgorithms, WifiConfiguration.AuthAlgorithm.strings); 2701 if (config.allowedAuthAlgorithms.cardinality() != 0 && 2702 !mWifiNative.setNetworkVariable( 2703 netId, 2704 WifiConfiguration.AuthAlgorithm.varName, 2705 allowedAuthAlgorithmsString)) { 2706 loge("failed to set auth_alg: "+ 2707 allowedAuthAlgorithmsString); 2708 break setVariables; 2709 } 2710 2711 String allowedPairwiseCiphersString = 2712 makeString(config.allowedPairwiseCiphers, 2713 WifiConfiguration.PairwiseCipher.strings); 2714 if (config.allowedPairwiseCiphers.cardinality() != 0 && 2715 !mWifiNative.setNetworkVariable( 2716 netId, 2717 WifiConfiguration.PairwiseCipher.varName, 2718 allowedPairwiseCiphersString)) { 2719 loge("failed to set pairwise: "+ 2720 allowedPairwiseCiphersString); 2721 break setVariables; 2722 } 2723 2724 String allowedGroupCiphersString = 2725 makeString(config.allowedGroupCiphers, WifiConfiguration.GroupCipher.strings); 2726 if (config.allowedGroupCiphers.cardinality() != 0 && 2727 !mWifiNative.setNetworkVariable( 2728 netId, 2729 WifiConfiguration.GroupCipher.varName, 2730 allowedGroupCiphersString)) { 2731 loge("failed to set group: "+ 2732 allowedGroupCiphersString); 2733 break setVariables; 2734 } 2735 2736 // Prevent client screw-up by passing in a WifiConfiguration we gave it 2737 // by preventing "*" as a key. 2738 if (config.preSharedKey != null && !config.preSharedKey.equals("*") && 2739 !mWifiNative.setNetworkVariable( 2740 netId, 2741 WifiConfiguration.pskVarName, 2742 config.preSharedKey)) { 2743 loge("failed to set psk"); 2744 break setVariables; 2745 } 2746 2747 boolean hasSetKey = false; 2748 if (config.wepKeys != null) { 2749 for (int i = 0; i < config.wepKeys.length; i++) { 2750 // Prevent client screw-up by passing in a WifiConfiguration we gave it 2751 // by preventing "*" as a key. 2752 if (config.wepKeys[i] != null && !config.wepKeys[i].equals("*")) { 2753 if (!mWifiNative.setNetworkVariable( 2754 netId, 2755 WifiConfiguration.wepKeyVarNames[i], 2756 config.wepKeys[i])) { 2757 loge("failed to set wep_key" + i + ": " + config.wepKeys[i]); 2758 break setVariables; 2759 } 2760 hasSetKey = true; 2761 } 2762 } 2763 } 2764 2765 if (hasSetKey) { 2766 if (!mWifiNative.setNetworkVariable( 2767 netId, 2768 WifiConfiguration.wepTxKeyIdxVarName, 2769 Integer.toString(config.wepTxKeyIndex))) { 2770 loge("failed to set wep_tx_keyidx: " + config.wepTxKeyIndex); 2771 break setVariables; 2772 } 2773 } 2774 2775 if (!mWifiNative.setNetworkVariable( 2776 netId, 2777 WifiConfiguration.priorityVarName, 2778 Integer.toString(config.priority))) { 2779 loge(config.SSID + ": failed to set priority: " 2780 +config.priority); 2781 break setVariables; 2782 } 2783 2784 if (config.hiddenSSID && !mWifiNative.setNetworkVariable( 2785 netId, 2786 WifiConfiguration.hiddenSSIDVarName, 2787 Integer.toString(config.hiddenSSID ? 1 : 0))) { 2788 loge(config.SSID + ": failed to set hiddenSSID: "+ 2789 config.hiddenSSID); 2790 break setVariables; 2791 } 2792 2793 if (config.requirePMF && !mWifiNative.setNetworkVariable( 2794 netId, 2795 WifiConfiguration.pmfVarName, 2796 "2")) { 2797 loge(config.SSID + ": failed to set requirePMF: "+ 2798 config.requirePMF); 2799 break setVariables; 2800 } 2801 2802 if (config.updateIdentifier != null && !mWifiNative.setNetworkVariable( 2803 netId, 2804 WifiConfiguration.updateIdentiferVarName, 2805 config.updateIdentifier)) { 2806 loge(config.SSID + ": failed to set updateIdentifier: "+ 2807 config.updateIdentifier); 2808 break setVariables; 2809 } 2810 2811 if (config.enterpriseConfig != null && 2812 config.enterpriseConfig.getEapMethod() != WifiEnterpriseConfig.Eap.NONE) { 2813 2814 WifiEnterpriseConfig enterpriseConfig = config.enterpriseConfig; 2815 2816 if (needsKeyStore(enterpriseConfig)) { 2817 /** 2818 * Keyguard settings may eventually be controlled by device policy. 2819 * We check here if keystore is unlocked before installing 2820 * credentials. 2821 * TODO: Do we need a dialog here ? 2822 */ 2823 if (mKeyStore.state() != KeyStore.State.UNLOCKED) { 2824 loge(config.SSID + ": key store is locked"); 2825 break setVariables; 2826 } 2827 2828 try { 2829 /* config passed may include only fields being updated. 2830 * In order to generate the key id, fetch uninitialized 2831 * fields from the currently tracked configuration 2832 */ 2833 WifiConfiguration currentConfig = mConfiguredNetworks.get(netId); 2834 String keyId = config.getKeyIdForCredentials(currentConfig); 2835 2836 if (!installKeys(enterpriseConfig, keyId)) { 2837 loge(config.SSID + ": failed to install keys"); 2838 break setVariables; 2839 } 2840 } catch (IllegalStateException e) { 2841 loge(config.SSID + " invalid config for key installation"); 2842 break setVariables; 2843 } 2844 } 2845 2846 HashMap<String, String> enterpriseFields = enterpriseConfig.getFields(); 2847 for (String key : enterpriseFields.keySet()) { 2848 String value = enterpriseFields.get(key); 2849 if (key.equals("password") && value != null && value.equals("*")) { 2850 // No need to try to set an obfuscated password, which will fail 2851 continue; 2852 } 2853 if (key.equals(WifiEnterpriseConfig.REALM_KEY) 2854 || key.equals(WifiEnterpriseConfig.PLMN_KEY)) { 2855 // No need to save realm or PLMN in supplicant 2856 continue; 2857 } 2858 if (!mWifiNative.setNetworkVariable( 2859 netId, 2860 key, 2861 value)) { 2862 removeKeys(enterpriseConfig); 2863 loge(config.SSID + ": failed to set " + key + 2864 ": " + value); 2865 break setVariables; 2866 } 2867 } 2868 } 2869 updateFailed = false; 2870 } // End of setVariables 2871 2872 if (updateFailed) { 2873 if (newNetwork) { 2874 mWifiNative.removeNetwork(netId); 2875 loge("Failed to set a network variable, removed network: " + netId); 2876 } 2877 return new NetworkUpdateResult(INVALID_NETWORK_ID); 2878 } 2879 2880 /* An update of the network variables requires reading them 2881 * back from the supplicant to update mConfiguredNetworks. 2882 * This is because some of the variables (SSID, wep keys & 2883 * passphrases) reflect different values when read back than 2884 * when written. For example, wep key is stored as * irrespective 2885 * of the value sent to the supplicant 2886 */ 2887 WifiConfiguration currentConfig = mConfiguredNetworks.get(netId); 2888 if (currentConfig == null) { 2889 currentConfig = new WifiConfiguration(); 2890 currentConfig.setIpAssignment(IpAssignment.DHCP); 2891 currentConfig.setProxySettings(ProxySettings.NONE); 2892 currentConfig.networkId = netId; 2893 if (config != null) { 2894 // Carry over the creation parameters 2895 currentConfig.selfAdded = config.selfAdded; 2896 currentConfig.didSelfAdd = config.didSelfAdd; 2897 currentConfig.ephemeral = config.ephemeral; 2898 currentConfig.autoJoinUseAggressiveJoinAttemptThreshold 2899 = config.autoJoinUseAggressiveJoinAttemptThreshold; 2900 currentConfig.lastConnectUid = config.lastConnectUid; 2901 currentConfig.lastUpdateUid = config.lastUpdateUid; 2902 currentConfig.creatorUid = config.creatorUid; 2903 currentConfig.creatorName = config.creatorName; 2904 currentConfig.lastUpdateName = config.lastUpdateName; 2905 currentConfig.peerWifiConfiguration = config.peerWifiConfiguration; 2906 currentConfig.FQDN = config.FQDN; 2907 currentConfig.providerFriendlyName = config.providerFriendlyName; 2908 currentConfig.roamingConsortiumIds = config.roamingConsortiumIds; 2909 currentConfig.validatedInternetAccess = config.validatedInternetAccess; 2910 currentConfig.numNoInternetAccessReports = config.numNoInternetAccessReports; 2911 currentConfig.updateTime = config.updateTime; 2912 currentConfig.creationTime = config.creationTime; 2913 } 2914 if (DBG) { 2915 log("created new config netId=" + Integer.toString(netId) 2916 + " uid=" + Integer.toString(currentConfig.creatorUid) 2917 + " name=" + currentConfig.creatorName); 2918 } 2919 } 2920 2921 /* save HomeSP object for passpoint networks */ 2922 HomeSP homeSP = null; 2923 2924 if (config.isPasspoint()) { 2925 try { 2926 Credential credential = 2927 new Credential(config.enterpriseConfig, mKeyStore, !newNetwork); 2928 HashSet<Long> roamingConsortiumIds = new HashSet<Long>(); 2929 for (Long roamingConsortiumId : config.roamingConsortiumIds) { 2930 roamingConsortiumIds.add(roamingConsortiumId); 2931 } 2932 2933 homeSP = new HomeSP(Collections.<String, Long>emptyMap(), config.FQDN, 2934 roamingConsortiumIds, Collections.<String>emptySet(), 2935 Collections.<Long>emptySet(), Collections.<Long>emptyList(), 2936 config.providerFriendlyName, null, credential); 2937 2938 log("created a homeSP object for " + config.networkId + ":" + config.SSID); 2939 2940 /* fix enterprise config properties for passpoint */ 2941 currentConfig.enterpriseConfig.setRealm(config.enterpriseConfig.getRealm()); 2942 currentConfig.enterpriseConfig.setPlmn(config.enterpriseConfig.getPlmn()); 2943 } 2944 catch (IOException ioe) { 2945 Log.e(TAG, "Failed to create Passpoint config: " + ioe); 2946 return new NetworkUpdateResult(INVALID_NETWORK_ID); 2947 } 2948 } 2949 2950 if (uid != WifiConfiguration.UNKNOWN_UID) { 2951 if (newNetwork) { 2952 currentConfig.creatorUid = uid; 2953 } else { 2954 currentConfig.lastUpdateUid = uid; 2955 } 2956 } 2957 2958 // For debug, record the time the configuration was modified 2959 StringBuilder sb = new StringBuilder(); 2960 sb.append("time="); 2961 Calendar c = Calendar.getInstance(); 2962 c.setTimeInMillis(System.currentTimeMillis()); 2963 sb.append(String.format("%tm-%td %tH:%tM:%tS.%tL", c, c, c, c, c, c)); 2964 2965 if (newNetwork) { 2966 currentConfig.dirty = true; 2967 currentConfig.creationTime = sb.toString(); 2968 } else { 2969 currentConfig.updateTime = sb.toString(); 2970 } 2971 2972 if (currentConfig.autoJoinStatus == WifiConfiguration.AUTO_JOIN_DELETED) { 2973 // Make sure the configuration is not deleted anymore since we just 2974 // added or modified it. 2975 currentConfig.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 2976 currentConfig.selfAdded = false; 2977 currentConfig.didSelfAdd = false; 2978 if (DBG) { 2979 log("remove deleted status netId=" + Integer.toString(netId) 2980 + " " + currentConfig.configKey()); 2981 } 2982 } 2983 2984 if (currentConfig.status == WifiConfiguration.Status.ENABLED) { 2985 // Make sure autojoin remain in sync with user modifying the configuration 2986 currentConfig.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 2987 } 2988 2989 if (currentConfig.configKey().equals(getLastSelectedConfiguration()) && 2990 currentConfig.ephemeral) { 2991 // Make the config non-ephemeral since the user just explicitly clicked it. 2992 currentConfig.ephemeral = false; 2993 if (DBG) log("remove ephemeral status netId=" + Integer.toString(netId) 2994 + " " + currentConfig.configKey()); 2995 } 2996 2997 if (VDBG) log("will read network variables netId=" + Integer.toString(netId)); 2998 2999 readNetworkVariables(currentConfig); 3000 3001 // Persist configuration paramaters that are not saved by supplicant. 3002 if (config.lastUpdateName != null) { 3003 currentConfig.lastUpdateName = config.lastUpdateName; 3004 } 3005 if (config.lastUpdateUid != WifiConfiguration.UNKNOWN_UID) { 3006 currentConfig.lastUpdateUid = config.lastUpdateUid; 3007 } 3008 3009 mConfiguredNetworks.put(netId, currentConfig); 3010 3011 NetworkUpdateResult result = writeIpAndProxyConfigurationsOnChange(currentConfig, config); 3012 result.setIsNewNetwork(newNetwork); 3013 result.setNetworkId(netId); 3014 3015 if (homeSP != null) { 3016 writePasspointConfigs(null, homeSP); 3017 } 3018 writeKnownNetworkHistory(false); 3019 3020 return result; 3021 } 3022 3023 public WifiConfiguration getWifiConfigForHomeSP(HomeSP homeSP) { 3024 WifiConfiguration config = mConfiguredNetworks.getByFQDN(homeSP.getFQDN()); 3025 if (config == null) { 3026 Log.e(TAG, "Could not find network for homeSP " + homeSP.getFQDN()); 3027 } 3028 return config; 3029 } 3030 3031 private HomeSP getHomeSPForConfig(WifiConfiguration config) { 3032 WifiConfiguration storedConfig = mConfiguredNetworks.get(config.networkId); 3033 return storedConfig != null && storedConfig.isPasspoint() ? 3034 mMOManager.getHomeSP(storedConfig.FQDN) : null; 3035 } 3036 3037 public ScanDetailCache getScanDetailCache(WifiConfiguration config) { 3038 if (config == null) return null; 3039 ScanDetailCache cache = mScanDetailCaches.get(config.networkId); 3040 if (cache == null && config.networkId != WifiConfiguration.INVALID_NETWORK_ID) { 3041 cache = new ScanDetailCache(config); 3042 mScanDetailCaches.put(config.networkId, cache); 3043 } 3044 return cache; 3045 } 3046 3047 /** 3048 * This function run thru the Saved WifiConfigurations and check if some should be linked. 3049 * @param config 3050 */ 3051 public void linkConfiguration(WifiConfiguration config) { 3052 3053 if (getScanDetailCache(config) != null && getScanDetailCache(config).size() > 6) { 3054 // Ignore configurations with large number of BSSIDs 3055 return; 3056 } 3057 if (!config.allowedKeyManagement.get(KeyMgmt.WPA_PSK)) { 3058 // Only link WPA_PSK config 3059 return; 3060 } 3061 for (WifiConfiguration link : mConfiguredNetworks.values()) { 3062 boolean doLink = false; 3063 3064 if (link.configKey().equals(config.configKey())) { 3065 continue; 3066 } 3067 3068 if (link.autoJoinStatus == WifiConfiguration.AUTO_JOIN_DELETED || link.ephemeral) { 3069 continue; 3070 } 3071 3072 // Autojoin will be allowed to dynamically jump from a linked configuration 3073 // to another, hence only link configurations that have equivalent level of security 3074 if (!link.allowedKeyManagement.equals(config.allowedKeyManagement)) { 3075 continue; 3076 } 3077 3078 ScanDetailCache linkedScanDetailCache = getScanDetailCache(link); 3079 if (linkedScanDetailCache != null && linkedScanDetailCache.size() > 6) { 3080 // Ignore configurations with large number of BSSIDs 3081 continue; 3082 } 3083 3084 if (config.defaultGwMacAddress != null && link.defaultGwMacAddress != null) { 3085 // If both default GW are known, link only if they are equal 3086 if (config.defaultGwMacAddress.equals(link.defaultGwMacAddress)) { 3087 if (VDBG) { 3088 loge("linkConfiguration link due to same gw " + link.SSID + 3089 " and " + config.SSID + " GW " + config.defaultGwMacAddress); 3090 } 3091 doLink = true; 3092 } 3093 } else { 3094 // We do not know BOTH default gateways hence we will try to link 3095 // hoping that WifiConfigurations are indeed behind the same gateway. 3096 // once both WifiConfiguration have been tried and thus once both efault gateways 3097 // are known we will revisit the choice of linking them 3098 if ((getScanDetailCache(config) != null) 3099 && (getScanDetailCache(config).size() <= 6)) { 3100 3101 for (String abssid : getScanDetailCache(config).keySet()) { 3102 for (String bbssid : linkedScanDetailCache.keySet()) { 3103 if (VVDBG) { 3104 loge("linkConfiguration try to link due to DBDC BSSID match " 3105 + link.SSID + 3106 " and " + config.SSID + " bssida " + abssid 3107 + " bssidb " + bbssid); 3108 } 3109 if (abssid.regionMatches(true, 0, bbssid, 0, 16)) { 3110 // If first 16 ascii characters of BSSID matches, 3111 // we assume this is a DBDC 3112 doLink = true; 3113 } 3114 } 3115 } 3116 } 3117 } 3118 3119 if (doLink == true && onlyLinkSameCredentialConfigurations) { 3120 String apsk = readNetworkVariableFromSupplicantFile(link.SSID, "psk"); 3121 String bpsk = readNetworkVariableFromSupplicantFile(config.SSID, "psk"); 3122 if (apsk == null || bpsk == null 3123 || TextUtils.isEmpty(apsk) || TextUtils.isEmpty(apsk) 3124 || apsk.equals("*") || apsk.equals(DELETED_CONFIG_PSK) 3125 || !apsk.equals(bpsk)) { 3126 doLink = false; 3127 } 3128 } 3129 3130 if (doLink) { 3131 if (VDBG) { 3132 loge("linkConfiguration: will link " + link.configKey() 3133 + " and " + config.configKey()); 3134 } 3135 if (link.linkedConfigurations == null) { 3136 link.linkedConfigurations = new HashMap<String, Integer>(); 3137 } 3138 if (config.linkedConfigurations == null) { 3139 config.linkedConfigurations = new HashMap<String, Integer>(); 3140 } 3141 if (link.linkedConfigurations.get(config.configKey()) == null) { 3142 link.linkedConfigurations.put(config.configKey(), Integer.valueOf(1)); 3143 link.dirty = true; 3144 } 3145 if (config.linkedConfigurations.get(link.configKey()) == null) { 3146 config.linkedConfigurations.put(link.configKey(), Integer.valueOf(1)); 3147 config.dirty = true; 3148 } 3149 } else { 3150 if (link.linkedConfigurations != null 3151 && (link.linkedConfigurations.get(config.configKey()) != null)) { 3152 if (VDBG) { 3153 loge("linkConfiguration: un-link " + config.configKey() 3154 + " from " + link.configKey()); 3155 } 3156 link.dirty = true; 3157 link.linkedConfigurations.remove(config.configKey()); 3158 } 3159 if (config.linkedConfigurations != null 3160 && (config.linkedConfigurations.get(link.configKey()) != null)) { 3161 if (VDBG) { 3162 loge("linkConfiguration: un-link " + link.configKey() 3163 + " from " + config.configKey()); 3164 } 3165 config.dirty = true; 3166 config.linkedConfigurations.remove(link.configKey()); 3167 } 3168 } 3169 } 3170 } 3171 3172 public HashSet<Integer> makeChannelList(WifiConfiguration config, int age, boolean restrict) { 3173 if (config == null) 3174 return null; 3175 long now_ms = System.currentTimeMillis(); 3176 3177 HashSet<Integer> channels = new HashSet<Integer>(); 3178 3179 //get channels for this configuration, if there are at least 2 BSSIDs 3180 if (getScanDetailCache(config) == null && config.linkedConfigurations == null) { 3181 return null; 3182 } 3183 3184 if (VDBG) { 3185 StringBuilder dbg = new StringBuilder(); 3186 dbg.append("makeChannelList age=" + Integer.toString(age) 3187 + " for " + config.configKey() 3188 + " max=" + maxNumActiveChannelsForPartialScans); 3189 if (getScanDetailCache(config) != null) { 3190 dbg.append(" bssids=" + getScanDetailCache(config).size()); 3191 } 3192 if (config.linkedConfigurations != null) { 3193 dbg.append(" linked=" + config.linkedConfigurations.size()); 3194 } 3195 loge(dbg.toString()); 3196 } 3197 3198 int numChannels = 0; 3199 if (getScanDetailCache(config) != null && getScanDetailCache(config).size() > 0) { 3200 for (ScanDetail scanDetail : getScanDetailCache(config).values()) { 3201 ScanResult result = scanDetail.getScanResult(); 3202 //TODO : cout active and passive channels separately 3203 if (numChannels > maxNumActiveChannelsForPartialScans.get()) { 3204 break; 3205 } 3206 if (VDBG) { 3207 boolean test = (now_ms - result.seen) < age; 3208 loge("has " + result.BSSID + " freq=" + Integer.toString(result.frequency) 3209 + " age=" + Long.toString(now_ms - result.seen) + " ?=" + test); 3210 } 3211 if (((now_ms - result.seen) < age)/*||(!restrict || result.is24GHz())*/) { 3212 channels.add(result.frequency); 3213 numChannels++; 3214 } 3215 } 3216 } 3217 3218 //get channels for linked configurations 3219 if (config.linkedConfigurations != null) { 3220 for (String key : config.linkedConfigurations.keySet()) { 3221 WifiConfiguration linked = getWifiConfiguration(key); 3222 if (linked == null) 3223 continue; 3224 if (getScanDetailCache(linked) == null) { 3225 continue; 3226 } 3227 for (ScanDetail scanDetail : getScanDetailCache(linked).values()) { 3228 ScanResult result = scanDetail.getScanResult(); 3229 if (VDBG) { 3230 loge("has link: " + result.BSSID 3231 + " freq=" + Integer.toString(result.frequency) 3232 + " age=" + Long.toString(now_ms - result.seen)); 3233 } 3234 if (numChannels > maxNumActiveChannelsForPartialScans.get()) { 3235 break; 3236 } 3237 if (((now_ms - result.seen) < age)/*||(!restrict || result.is24GHz())*/) { 3238 channels.add(result.frequency); 3239 numChannels++; 3240 } 3241 } 3242 } 3243 } 3244 return channels; 3245 } 3246 3247 private Map<HomeSP, PasspointMatch> matchPasspointNetworks(ScanDetail scanDetail) { 3248 if (!mMOManager.isConfigured()) { 3249 return null; 3250 } 3251 NetworkDetail networkDetail = scanDetail.getNetworkDetail(); 3252 if (!networkDetail.hasInterworking()) { 3253 return null; 3254 } 3255 updateAnqpCache(scanDetail, networkDetail.getANQPElements()); 3256 3257 Map<HomeSP, PasspointMatch> matches = matchNetwork(scanDetail, true); 3258 Log.d(Utils.hs2LogTag(getClass()), scanDetail.getSSID() + 3259 " pass 1 matches: " + toMatchString(matches)); 3260 return matches; 3261 } 3262 3263 private Map<HomeSP, PasspointMatch> matchNetwork(ScanDetail scanDetail, boolean query) { 3264 NetworkDetail networkDetail = scanDetail.getNetworkDetail(); 3265 3266 ANQPData anqpData = mAnqpCache.getEntry(networkDetail); 3267 3268 Map<Constants.ANQPElementType, ANQPElement> anqpElements = 3269 anqpData != null ? anqpData.getANQPElements() : null; 3270 3271 boolean queried = !query; 3272 Collection<HomeSP> homeSPs = mMOManager.getLoadedSPs().values(); 3273 Map<HomeSP, PasspointMatch> matches = new HashMap<>(homeSPs.size()); 3274 Log.d(Utils.hs2LogTag(getClass()), "match nwk " + scanDetail.toKeyString() + 3275 ", anqp " + ( anqpData != null ? "present" : "missing" ) + 3276 ", query " + query + ", home sps: " + homeSPs.size()); 3277 3278 for (HomeSP homeSP : homeSPs) { 3279 PasspointMatch match = homeSP.match(networkDetail, anqpElements, mSIMAccessor); 3280 3281 Log.d(Utils.hs2LogTag(getClass()), " -- " + 3282 homeSP.getFQDN() + ": match " + match + ", queried " + queried); 3283 3284 if (match == PasspointMatch.Incomplete && !queried) { 3285 if (mAnqpCache.initiate(networkDetail)) { 3286 mSupplicantBridge.startANQP(scanDetail); 3287 } 3288 queried = true; 3289 } 3290 matches.put(homeSP, match); 3291 } 3292 return matches; 3293 } 3294 3295 public void notifyANQPDone(Long bssid, boolean success) { 3296 mSupplicantBridge.notifyANQPDone(bssid, success); 3297 } 3298 3299 public void notifyANQPResponse(ScanDetail scanDetail, 3300 Map<Constants.ANQPElementType, ANQPElement> anqpElements) { 3301 3302 updateAnqpCache(scanDetail, anqpElements); 3303 if (anqpElements == null || anqpElements.isEmpty()) { 3304 return; 3305 } 3306 scanDetail.propagateANQPInfo(anqpElements); 3307 3308 Map<HomeSP, PasspointMatch> matches = matchNetwork(scanDetail, false); 3309 Log.d(Utils.hs2LogTag(getClass()), scanDetail.getSSID() + 3310 " pass 2 matches: " + toMatchString(matches)); 3311 3312 cacheScanResultForPasspointConfigs(scanDetail, matches); 3313 } 3314 3315 3316 private void updateAnqpCache(ScanDetail scanDetail, 3317 Map<Constants.ANQPElementType,ANQPElement> anqpElements) 3318 { 3319 NetworkDetail networkDetail = scanDetail.getNetworkDetail(); 3320 3321 if (anqpElements == null) { 3322 // Try to pull cached data if query failed. 3323 ANQPData data = mAnqpCache.getEntry(networkDetail); 3324 if (data != null) { 3325 scanDetail.propagateANQPInfo(data.getANQPElements()); 3326 } 3327 return; 3328 } 3329 3330 mAnqpCache.update(networkDetail, anqpElements); 3331 } 3332 3333 private static String toMatchString(Map<HomeSP, PasspointMatch> matches) { 3334 StringBuilder sb = new StringBuilder(); 3335 for (Map.Entry<HomeSP, PasspointMatch> entry : matches.entrySet()) { 3336 sb.append(' ').append(entry.getKey().getFQDN()).append("->").append(entry.getValue()); 3337 } 3338 return sb.toString(); 3339 } 3340 3341 private void cacheScanResultForPasspointConfigs(ScanDetail scanDetail, 3342 Map<HomeSP,PasspointMatch> matches) { 3343 3344 for (Map.Entry<HomeSP, PasspointMatch> entry : matches.entrySet()) { 3345 PasspointMatch match = entry.getValue(); 3346 if (match == PasspointMatch.HomeProvider || match == PasspointMatch.RoamingProvider) { 3347 WifiConfiguration config = getWifiConfigForHomeSP(entry.getKey()); 3348 if (config != null) { 3349 cacheScanResultForConfig(config, scanDetail, entry.getValue()); 3350 } else { 3351 Log.w(Utils.hs2LogTag(getClass()), "Failed to find config for '" + 3352 entry.getKey().getFQDN() + "'"); 3353 /* perhaps the configuration was deleted?? */ 3354 } 3355 } 3356 } 3357 } 3358 3359 private void cacheScanResultForConfig( 3360 WifiConfiguration config, ScanDetail scanDetail, PasspointMatch passpointMatch) { 3361 3362 ScanResult scanResult = scanDetail.getScanResult(); 3363 3364 if (config.autoJoinStatus >= WifiConfiguration.AUTO_JOIN_DELETED) { 3365 if (VVDBG) { 3366 loge("updateSavedNetworkHistory(): found a deleted, skip it... " 3367 + config.configKey()); 3368 } 3369 // The scan result belongs to a deleted config: 3370 // - increment numConfigFound to remember that we found a config 3371 // matching for this scan result 3372 // - dont do anything since the config was deleted, just skip... 3373 return; 3374 } 3375 3376 ScanDetailCache scanDetailCache = getScanDetailCache(config); 3377 if (scanDetailCache == null) { 3378 Log.w(TAG, "Could not allocate scan cache for " + config.SSID); 3379 return; 3380 } 3381 3382 // Adding a new BSSID 3383 ScanResult result = scanDetailCache.get(scanResult.BSSID); 3384 if (result != null) { 3385 // transfer the black list status 3386 scanResult.autoJoinStatus = result.autoJoinStatus; 3387 scanResult.blackListTimestamp = result.blackListTimestamp; 3388 scanResult.numIpConfigFailures = result.numIpConfigFailures; 3389 scanResult.numConnection = result.numConnection; 3390 scanResult.isAutoJoinCandidate = result.isAutoJoinCandidate; 3391 } 3392 3393 if (config.ephemeral) { 3394 // For an ephemeral Wi-Fi config, the ScanResult should be considered 3395 // untrusted. 3396 scanResult.untrusted = true; 3397 } 3398 3399 if (scanDetailCache.size() > (maxNumScanCacheEntries + 64)) { 3400 long now_dbg = 0; 3401 if (VVDBG) { 3402 loge(" Will trim config " + config.configKey() 3403 + " size " + scanDetailCache.size()); 3404 3405 for (ScanDetail sd : scanDetailCache.values()) { 3406 loge(" " + sd.getBSSIDString() + " " + sd.getSeen()); 3407 } 3408 now_dbg = SystemClock.elapsedRealtimeNanos(); 3409 } 3410 // Trim the scan result cache to maxNumScanCacheEntries entries max 3411 // Since this operation is expensive, make sure it is not performed 3412 // until the cache has grown significantly above the trim treshold 3413 scanDetailCache.trim(maxNumScanCacheEntries); 3414 if (VVDBG) { 3415 long diff = SystemClock.elapsedRealtimeNanos() - now_dbg; 3416 loge(" Finished trimming config, time(ns) " + diff); 3417 for (ScanDetail sd : scanDetailCache.values()) { 3418 loge(" " + sd.getBSSIDString() + " " + sd.getSeen()); 3419 } 3420 } 3421 } 3422 3423 // Add the scan result to this WifiConfiguration 3424 if (passpointMatch != null) 3425 scanDetailCache.put(scanDetail, passpointMatch, getHomeSPForConfig(config)); 3426 else 3427 scanDetailCache.put(scanDetail); 3428 3429 // Since we added a scan result to this configuration, re-attempt linking 3430 linkConfiguration(config); 3431 } 3432 3433 3434 // Update the WifiConfiguration database with the new scan result 3435 // A scan result can be associated to multiple WifiConfigurations 3436 public boolean updateSavedNetworkHistory(ScanDetail scanDetail) { 3437 3438 ScanResult scanResult = scanDetail.getScanResult(); 3439 NetworkDetail networkDetail = scanDetail.getNetworkDetail(); 3440 3441 int numConfigFound = 0; 3442 if (scanResult == null) 3443 return false; 3444 3445 String SSID = "\"" + scanResult.SSID + "\""; 3446 3447 if (networkDetail.hasInterworking()) { 3448 Map<HomeSP, PasspointMatch> matches = matchPasspointNetworks(scanDetail); 3449 if (matches != null) { 3450 cacheScanResultForPasspointConfigs(scanDetail, matches); 3451 return matches.size() != 0; 3452 } 3453 } 3454 3455 for (WifiConfiguration config : mConfiguredNetworks.values()) { 3456 boolean found = false; 3457 3458 if (config.SSID == null || !config.SSID.equals(SSID)) { 3459 // SSID mismatch 3460 if (VVDBG) { 3461 loge("updateSavedNetworkHistory(): SSID mismatch " + config.configKey() 3462 + " SSID=" + config.SSID + " " + SSID); 3463 } 3464 continue; 3465 } 3466 if (VDBG) { 3467 loge("updateSavedNetworkHistory(): try " + config.configKey() 3468 + " SSID=" + config.SSID + " " + scanResult.SSID 3469 + " " + scanResult.capabilities 3470 + " ajst=" + config.autoJoinStatus); 3471 } 3472 if (scanResult.capabilities.contains("WEP") 3473 && config.configKey().contains("WEP")) { 3474 found = true; 3475 } else if (scanResult.capabilities.contains("PSK") 3476 && config.configKey().contains("PSK")) { 3477 found = true; 3478 } else if (scanResult.capabilities.contains("EAP") 3479 && config.configKey().contains("EAP")) { 3480 found = true; 3481 } else if (!scanResult.capabilities.contains("WEP") 3482 && !scanResult.capabilities.contains("PSK") 3483 && !scanResult.capabilities.contains("EAP") 3484 && !config.configKey().contains("WEP") 3485 && !config.configKey().contains("PSK") 3486 && !config.configKey().contains("EAP")) { 3487 found = true; 3488 } 3489 3490 if (found) { 3491 numConfigFound ++; 3492 cacheScanResultForConfig(config, scanDetail, null); 3493 } 3494 3495 if (VDBG && found) { 3496 String status = ""; 3497 if (scanResult.autoJoinStatus > 0) { 3498 status = " status=" + Integer.toString(scanResult.autoJoinStatus); 3499 } 3500 loge(" got known scan result " + 3501 scanResult.BSSID + " key : " 3502 + config.configKey() + " num: " + 3503 Integer.toString(getScanDetailCache(config).size()) 3504 + " rssi=" + Integer.toString(scanResult.level) 3505 + " freq=" + Integer.toString(scanResult.frequency) 3506 + status); 3507 } 3508 } 3509 return numConfigFound != 0; 3510 } 3511 3512 /* Compare current and new configuration and write to file on change */ 3513 private NetworkUpdateResult writeIpAndProxyConfigurationsOnChange( 3514 WifiConfiguration currentConfig, 3515 WifiConfiguration newConfig) { 3516 boolean ipChanged = false; 3517 boolean proxyChanged = false; 3518 3519 if (VDBG) { 3520 loge("writeIpAndProxyConfigurationsOnChange: " + currentConfig.SSID + " -> " + 3521 newConfig.SSID + " path: " + ipConfigFile); 3522 } 3523 3524 3525 switch (newConfig.getIpAssignment()) { 3526 case STATIC: 3527 if (currentConfig.getIpAssignment() != newConfig.getIpAssignment()) { 3528 ipChanged = true; 3529 } else { 3530 ipChanged = !Objects.equals( 3531 currentConfig.getStaticIpConfiguration(), 3532 newConfig.getStaticIpConfiguration()); 3533 } 3534 break; 3535 case DHCP: 3536 if (currentConfig.getIpAssignment() != newConfig.getIpAssignment()) { 3537 ipChanged = true; 3538 } 3539 break; 3540 case UNASSIGNED: 3541 /* Ignore */ 3542 break; 3543 default: 3544 loge("Ignore invalid ip assignment during write"); 3545 break; 3546 } 3547 3548 switch (newConfig.getProxySettings()) { 3549 case STATIC: 3550 case PAC: 3551 ProxyInfo newHttpProxy = newConfig.getHttpProxy(); 3552 ProxyInfo currentHttpProxy = currentConfig.getHttpProxy(); 3553 3554 if (newHttpProxy != null) { 3555 proxyChanged = !newHttpProxy.equals(currentHttpProxy); 3556 } else { 3557 proxyChanged = (currentHttpProxy != null); 3558 } 3559 break; 3560 case NONE: 3561 if (currentConfig.getProxySettings() != newConfig.getProxySettings()) { 3562 proxyChanged = true; 3563 } 3564 break; 3565 case UNASSIGNED: 3566 /* Ignore */ 3567 break; 3568 default: 3569 loge("Ignore invalid proxy configuration during write"); 3570 break; 3571 } 3572 3573 if (ipChanged) { 3574 currentConfig.setIpAssignment(newConfig.getIpAssignment()); 3575 currentConfig.setStaticIpConfiguration(newConfig.getStaticIpConfiguration()); 3576 log("IP config changed SSID = " + currentConfig.SSID); 3577 if (currentConfig.getStaticIpConfiguration() != null) { 3578 log(" static configuration: " + 3579 currentConfig.getStaticIpConfiguration().toString()); 3580 } 3581 } 3582 3583 if (proxyChanged) { 3584 currentConfig.setProxySettings(newConfig.getProxySettings()); 3585 currentConfig.setHttpProxy(newConfig.getHttpProxy()); 3586 log("proxy changed SSID = " + currentConfig.SSID); 3587 if (currentConfig.getHttpProxy() != null) { 3588 log(" proxyProperties: " + currentConfig.getHttpProxy().toString()); 3589 } 3590 } 3591 3592 if (ipChanged || proxyChanged) { 3593 writeIpAndProxyConfigurations(); 3594 sendConfiguredNetworksChangedBroadcast(currentConfig, 3595 WifiManager.CHANGE_REASON_CONFIG_CHANGE); 3596 } 3597 return new NetworkUpdateResult(ipChanged, proxyChanged); 3598 } 3599 3600 /** Returns true if a particular config key needs to be quoted when passed to the supplicant. */ 3601 private boolean enterpriseConfigKeyShouldBeQuoted(String key) { 3602 switch (key) { 3603 case WifiEnterpriseConfig.EAP_KEY: 3604 case WifiEnterpriseConfig.ENGINE_KEY: 3605 return false; 3606 default: 3607 return true; 3608 } 3609 } 3610 3611 /** 3612 * Read the variables from the supplicant daemon that are needed to 3613 * fill in the WifiConfiguration object. 3614 * 3615 * @param config the {@link WifiConfiguration} object to be filled in. 3616 */ 3617 private void readNetworkVariables(WifiConfiguration config) { 3618 3619 int netId = config.networkId; 3620 if (netId < 0) 3621 return; 3622 3623 /* 3624 * TODO: maybe should have a native method that takes an array of 3625 * variable names and returns an array of values. But we'd still 3626 * be doing a round trip to the supplicant daemon for each variable. 3627 */ 3628 String value; 3629 3630 value = mWifiNative.getNetworkVariable(netId, WifiConfiguration.ssidVarName); 3631 if (!TextUtils.isEmpty(value)) { 3632 if (value.charAt(0) != '"') { 3633 config.SSID = "\"" + WifiSsid.createFromHex(value).toString() + "\""; 3634 //TODO: convert a hex string that is not UTF-8 decodable to a P-formatted 3635 //supplicant string 3636 } else { 3637 config.SSID = value; 3638 } 3639 } else { 3640 config.SSID = null; 3641 } 3642 3643 value = mWifiNative.getNetworkVariable(netId, WifiConfiguration.bssidVarName); 3644 if (!TextUtils.isEmpty(value)) { 3645 config.BSSID = value; 3646 } else { 3647 config.BSSID = null; 3648 } 3649 3650 value = mWifiNative.getNetworkVariable(netId, WifiConfiguration.priorityVarName); 3651 config.priority = -1; 3652 if (!TextUtils.isEmpty(value)) { 3653 try { 3654 config.priority = Integer.parseInt(value); 3655 } catch (NumberFormatException ignore) { 3656 } 3657 } 3658 3659 value = mWifiNative.getNetworkVariable(netId, WifiConfiguration.hiddenSSIDVarName); 3660 config.hiddenSSID = false; 3661 if (!TextUtils.isEmpty(value)) { 3662 try { 3663 config.hiddenSSID = Integer.parseInt(value) != 0; 3664 } catch (NumberFormatException ignore) { 3665 } 3666 } 3667 3668 value = mWifiNative.getNetworkVariable(netId, WifiConfiguration.wepTxKeyIdxVarName); 3669 config.wepTxKeyIndex = -1; 3670 if (!TextUtils.isEmpty(value)) { 3671 try { 3672 config.wepTxKeyIndex = Integer.parseInt(value); 3673 } catch (NumberFormatException ignore) { 3674 } 3675 } 3676 3677 for (int i = 0; i < 4; i++) { 3678 value = mWifiNative.getNetworkVariable(netId, 3679 WifiConfiguration.wepKeyVarNames[i]); 3680 if (!TextUtils.isEmpty(value)) { 3681 config.wepKeys[i] = value; 3682 } else { 3683 config.wepKeys[i] = null; 3684 } 3685 } 3686 3687 value = mWifiNative.getNetworkVariable(netId, WifiConfiguration.pskVarName); 3688 if (!TextUtils.isEmpty(value)) { 3689 config.preSharedKey = value; 3690 } else { 3691 config.preSharedKey = null; 3692 } 3693 3694 readNetworkBitsetVariable(config.networkId, config.allowedProtocols, 3695 WifiConfiguration.Protocol.varName, WifiConfiguration.Protocol.strings); 3696 3697 readNetworkBitsetVariable(config.networkId, config.allowedKeyManagement, 3698 WifiConfiguration.KeyMgmt.varName, WifiConfiguration.KeyMgmt.strings); 3699 3700 readNetworkBitsetVariable(config.networkId, config.allowedAuthAlgorithms, 3701 WifiConfiguration.AuthAlgorithm.varName, WifiConfiguration.AuthAlgorithm.strings); 3702 3703 readNetworkBitsetVariable(config.networkId, config.allowedPairwiseCiphers, 3704 WifiConfiguration.PairwiseCipher.varName, WifiConfiguration.PairwiseCipher.strings); 3705 3706 readNetworkBitsetVariable(config.networkId, config.allowedGroupCiphers, 3707 WifiConfiguration.GroupCipher.varName, WifiConfiguration.GroupCipher.strings); 3708 3709 if (config.enterpriseConfig == null) { 3710 config.enterpriseConfig = new WifiEnterpriseConfig(); 3711 } 3712 HashMap<String, String> enterpriseFields = config.enterpriseConfig.getFields(); 3713 for (String key : ENTERPRISE_CONFIG_SUPPLICANT_KEYS) { 3714 value = mWifiNative.getNetworkVariable(netId, key); 3715 if (!TextUtils.isEmpty(value)) { 3716 if (!enterpriseConfigKeyShouldBeQuoted(key)) { 3717 value = removeDoubleQuotes(value); 3718 } 3719 enterpriseFields.put(key, value); 3720 } else { 3721 enterpriseFields.put(key, EMPTY_VALUE); 3722 } 3723 } 3724 3725 if (migrateOldEapTlsNative(config.enterpriseConfig, netId)) { 3726 saveConfig(); 3727 } 3728 3729 migrateCerts(config.enterpriseConfig); 3730 // initializeSoftwareKeystoreFlag(config.enterpriseConfig, mKeyStore); 3731 } 3732 3733 private static String removeDoubleQuotes(String string) { 3734 int length = string.length(); 3735 if ((length > 1) && (string.charAt(0) == '"') 3736 && (string.charAt(length - 1) == '"')) { 3737 return string.substring(1, length - 1); 3738 } 3739 return string; 3740 } 3741 3742 private static String makeString(BitSet set, String[] strings) { 3743 StringBuffer buf = new StringBuffer(); 3744 int nextSetBit = -1; 3745 3746 /* Make sure all set bits are in [0, strings.length) to avoid 3747 * going out of bounds on strings. (Shouldn't happen, but...) */ 3748 set = set.get(0, strings.length); 3749 3750 while ((nextSetBit = set.nextSetBit(nextSetBit + 1)) != -1) { 3751 buf.append(strings[nextSetBit].replace('_', '-')).append(' '); 3752 } 3753 3754 // remove trailing space 3755 if (set.cardinality() > 0) { 3756 buf.setLength(buf.length() - 1); 3757 } 3758 3759 return buf.toString(); 3760 } 3761 3762 private int lookupString(String string, String[] strings) { 3763 int size = strings.length; 3764 3765 string = string.replace('-', '_'); 3766 3767 for (int i = 0; i < size; i++) 3768 if (string.equals(strings[i])) 3769 return i; 3770 3771 // if we ever get here, we should probably add the 3772 // value to WifiConfiguration to reflect that it's 3773 // supported by the WPA supplicant 3774 loge("Failed to look-up a string: " + string); 3775 3776 return -1; 3777 } 3778 3779 /* return the allowed key management based on a scan result */ 3780 3781 public WifiConfiguration wifiConfigurationFromScanResult(ScanDetail scanDetail) { 3782 3783 ScanResult result = scanDetail.getScanResult(); 3784 WifiConfiguration config = new WifiConfiguration(); 3785 3786 config.SSID = "\"" + result.SSID + "\""; 3787 3788 if (VDBG) { 3789 loge("WifiConfiguration from scan results " + 3790 config.SSID + " cap " + result.capabilities); 3791 } 3792 if (result.capabilities.contains("WEP")) { 3793 config.allowedKeyManagement.set(KeyMgmt.NONE); 3794 config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN); //? 3795 config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.SHARED); 3796 } 3797 3798 if (result.capabilities.contains("PSK")) { 3799 config.allowedKeyManagement.set(KeyMgmt.WPA_PSK); 3800 } 3801 3802 if (result.capabilities.contains("EAP")) { 3803 //this is probably wrong, as we don't have a way to enter the enterprise config 3804 config.allowedKeyManagement.set(KeyMgmt.WPA_EAP); 3805 config.allowedKeyManagement.set(KeyMgmt.IEEE8021X); 3806 } 3807 3808 /* getScanDetailCache(config).put(scanDetail); */ 3809 3810 return config; 3811 } 3812 3813 3814 /* Returns a unique for a given configuration */ 3815 private static int configKey(WifiConfiguration config) { 3816 String key = config.configKey(); 3817 return key.hashCode(); 3818 } 3819 3820 void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 3821 pw.println("Dump of WifiConfigStore"); 3822 pw.println("mLastPriority " + mLastPriority); 3823 pw.println("Configured networks"); 3824 for (WifiConfiguration conf : getAllConfiguredNetworks()) { 3825 pw.println(conf); 3826 } 3827 pw.println(); 3828 if (mLostConfigsDbg != null && mLostConfigsDbg.size() > 0) { 3829 pw.println("LostConfigs: "); 3830 for (String s : mLostConfigsDbg) { 3831 pw.println(s); 3832 } 3833 } 3834 if (mLocalLog != null) { 3835 pw.println("WifiConfigStore - Log Begin ----"); 3836 mLocalLog.dump(fd, pw, args); 3837 pw.println("WifiConfigStore - Log End ----"); 3838 } 3839 if (mMOManager.isConfigured()) { 3840 pw.println("Begin dump of ANQP Cache"); 3841 mAnqpCache.dump(pw); 3842 pw.println("End dump of ANQP Cache"); 3843 } 3844 } 3845 3846 public String getConfigFile() { 3847 return ipConfigFile; 3848 } 3849 3850 protected void loge(String s) { 3851 loge(s, false); 3852 } 3853 3854 protected void loge(String s, boolean stack) { 3855 if (stack) { 3856 Log.e(TAG, s + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3857 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3858 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3859 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3860 } else { 3861 Log.e(TAG, s); 3862 } 3863 } 3864 3865 private void logKernelTime() { 3866 long kernelTimeMs = System.nanoTime()/(1000*1000); 3867 StringBuilder builder = new StringBuilder(); 3868 builder.append("kernel time = ").append(kernelTimeMs/1000).append(".").append 3869 (kernelTimeMs%1000).append("\n"); 3870 localLog(builder.toString()); 3871 } 3872 3873 protected void log(String s) { 3874 Log.d(TAG, s); 3875 } 3876 3877 private void localLog(String s) { 3878 if (mLocalLog != null) { 3879 mLocalLog.log(s); 3880 } 3881 } 3882 3883 private void localLog(String s, boolean force) { 3884 localLog(s); 3885 if (force) loge(s); 3886 } 3887 3888 private void localLog(String s, int netId) { 3889 if (mLocalLog == null) { 3890 return; 3891 } 3892 3893 WifiConfiguration config; 3894 synchronized(mConfiguredNetworks) { // !!! Useless synchronization 3895 config = mConfiguredNetworks.get(netId); 3896 } 3897 3898 if (config != null) { 3899 mLocalLog.log(s + " " + config.getPrintableSsid() + " " + netId 3900 + " status=" + config.status 3901 + " key=" + config.configKey()); 3902 } else { 3903 mLocalLog.log(s + " " + netId); 3904 } 3905 } 3906 3907 // Certificate and private key management for EnterpriseConfig 3908 static boolean needsKeyStore(WifiEnterpriseConfig config) { 3909 // Has no keys to be installed 3910 if (config.getClientCertificate() == null && config.getCaCertificate() == null) 3911 return false; 3912 return true; 3913 } 3914 3915 static boolean isHardwareBackedKey(PrivateKey key) { 3916 return KeyChain.isBoundKeyAlgorithm(key.getAlgorithm()); 3917 } 3918 3919 static boolean hasHardwareBackedKey(Certificate certificate) { 3920 return KeyChain.isBoundKeyAlgorithm(certificate.getPublicKey().getAlgorithm()); 3921 } 3922 3923 static boolean needsSoftwareBackedKeyStore(WifiEnterpriseConfig config) { 3924 String client = config.getClientCertificateAlias(); 3925 if (!TextUtils.isEmpty(client)) { 3926 // a valid client certificate is configured 3927 3928 // BUGBUG: keyStore.get() never returns certBytes; because it is not 3929 // taking WIFI_UID as a parameter. It always looks for certificate 3930 // with SYSTEM_UID, and never finds any Wifi certificates. Assuming that 3931 // all certificates need software keystore until we get the get() API 3932 // fixed. 3933 3934 return true; 3935 } 3936 3937 /* 3938 try { 3939 3940 if (DBG) Slog.d(TAG, "Loading client certificate " + Credentials 3941 .USER_CERTIFICATE + client); 3942 3943 CertificateFactory factory = CertificateFactory.getInstance("X.509"); 3944 if (factory == null) { 3945 Slog.e(TAG, "Error getting certificate factory"); 3946 return; 3947 } 3948 3949 byte[] certBytes = keyStore.get(Credentials.USER_CERTIFICATE + client); 3950 if (certBytes != null) { 3951 Certificate cert = (X509Certificate) factory.generateCertificate( 3952 new ByteArrayInputStream(certBytes)); 3953 3954 if (cert != null) { 3955 mNeedsSoftwareKeystore = hasHardwareBackedKey(cert); 3956 3957 if (DBG) Slog.d(TAG, "Loaded client certificate " + Credentials 3958 .USER_CERTIFICATE + client); 3959 if (DBG) Slog.d(TAG, "It " + (mNeedsSoftwareKeystore ? "needs" : 3960 "does not need" ) + " software key store"); 3961 } else { 3962 Slog.d(TAG, "could not generate certificate"); 3963 } 3964 } else { 3965 Slog.e(TAG, "Could not load client certificate " + Credentials 3966 .USER_CERTIFICATE + client); 3967 mNeedsSoftwareKeystore = true; 3968 } 3969 3970 } catch(CertificateException e) { 3971 Slog.e(TAG, "Could not read certificates"); 3972 mCaCert = null; 3973 mClientCertificate = null; 3974 } 3975 */ 3976 3977 return false; 3978 } 3979 3980 boolean isNetworkConfigured(WifiConfiguration config) { 3981 // Check if either we have a network Id or a WifiConfiguration 3982 // matching the one we are trying to add. 3983 3984 if(config.networkId != INVALID_NETWORK_ID) { 3985 return (mConfiguredNetworks.get(config.networkId) != null); 3986 } 3987 3988 return (mConfiguredNetworks.getByConfigKey(config.configKey()) != null); 3989 } 3990 3991 /** 3992 * Checks if uid has access to modify the configuration corresponding to networkId. 3993 * 3994 * Factors involved in modifiability of a config are as follows. 3995 * If uid is a Device Owner app then it has full control over the device, including WiFi 3996 * configs. 3997 * If the modification is only for administrative annotation (e.g. when connecting) or the 3998 * config is not lockdown eligible (currently that means any config not last updated by the DO) 3999 * then the creator of config or an app holding OVERRIDE_CONFIG_WIFI can modify the config. 4000 * If the config is lockdown eligible and the modification is substantial (not annotation) 4001 * then the requirement to be able to modify the config by the uid is as follows: 4002 * a) the uid has to hold OVERRIDE_CONFIG_WIFI and 4003 * b) the lockdown feature should be disabled. 4004 */ 4005 boolean canModifyNetwork(int uid, int networkId, boolean onlyAnnotate) { 4006 WifiConfiguration config = mConfiguredNetworks.get(networkId); 4007 4008 if (config == null) { 4009 loge("canModifyNetwork: cannot find config networkId " + networkId); 4010 return false; 4011 } 4012 4013 final DevicePolicyManagerInternal dpmi = LocalServices.getService( 4014 DevicePolicyManagerInternal.class); 4015 4016 final boolean isUidDeviceOwner = dpmi != null && dpmi.isActiveAdminWithPolicy(uid, 4017 DeviceAdminInfo.USES_POLICY_DEVICE_OWNER); 4018 4019 if (isUidDeviceOwner) { 4020 // Device Owner has full control over the device, including WiFi Configs 4021 return true; 4022 } 4023 4024 final boolean isCreator = (config.creatorUid == uid); 4025 4026 if (onlyAnnotate) { 4027 return isCreator || checkConfigOverridePermission(uid); 4028 } 4029 4030 // Check if device has DPM capability. If it has and dpmi is still null, then we 4031 // treat this case with suspicion and bail out. 4032 if (mContext.getPackageManager().hasSystemFeature(PackageManager.FEATURE_DEVICE_ADMIN) 4033 && dpmi == null) { 4034 return false; 4035 } 4036 4037 // WiFi config lockdown related logic. At this point we know uid NOT to be a Device Owner. 4038 4039 final boolean isConfigEligibleForLockdown = dpmi != null && dpmi.isActiveAdminWithPolicy( 4040 config.creatorUid, DeviceAdminInfo.USES_POLICY_DEVICE_OWNER); 4041 if (!isConfigEligibleForLockdown) { 4042 return isCreator || checkConfigOverridePermission(uid); 4043 } 4044 4045 final ContentResolver resolver = mContext.getContentResolver(); 4046 final boolean isLockdownFeatureEnabled = Settings.Global.getInt(resolver, 4047 Settings.Global.WIFI_DEVICE_OWNER_CONFIGS_LOCKDOWN, 0) != 0; 4048 return !isLockdownFeatureEnabled && checkConfigOverridePermission(uid); 4049 } 4050 4051 /** 4052 * Checks if uid has access to modify config. 4053 */ 4054 boolean canModifyNetwork(int uid, WifiConfiguration config, boolean onlyAnnotate) { 4055 if (config == null) { 4056 loge("canModifyNetowrk recieved null configuration"); 4057 return false; 4058 } 4059 4060 // Resolve the correct network id. 4061 int netid; 4062 if (config.networkId != INVALID_NETWORK_ID){ 4063 netid = config.networkId; 4064 } else { 4065 WifiConfiguration test = mConfiguredNetworks.getByConfigKey(config.configKey()); 4066 if (test == null) { 4067 return false; 4068 } else { 4069 netid = test.networkId; 4070 } 4071 } 4072 4073 return canModifyNetwork(uid, netid, onlyAnnotate); 4074 } 4075 4076 boolean checkConfigOverridePermission(int uid) { 4077 try { 4078 return (AppGlobals.getPackageManager().checkUidPermission( 4079 android.Manifest.permission.OVERRIDE_WIFI_CONFIG, uid) 4080 == PackageManager.PERMISSION_GRANTED); 4081 } catch (RemoteException e) { 4082 return false; 4083 } 4084 } 4085 4086 /** called when CS ask WiFistateMachine to disconnect the current network 4087 * because the score is bad. 4088 */ 4089 void handleBadNetworkDisconnectReport(int netId, WifiInfo info) { 4090 /* TODO verify the bad network is current */ 4091 WifiConfiguration config = mConfiguredNetworks.get(netId); 4092 if (config != null) { 4093 if ((info.getRssi() < WifiConfiguration.UNWANTED_BLACKLIST_SOFT_RSSI_24 4094 && info.is24GHz()) || (info.getRssi() < 4095 WifiConfiguration.UNWANTED_BLACKLIST_SOFT_RSSI_5 && info.is5GHz())) { 4096 // We got disconnected and RSSI was bad, so disable light 4097 config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_TEMPORARY_DISABLED 4098 + WifiConfiguration.UNWANTED_BLACKLIST_SOFT_BUMP); 4099 loge("handleBadNetworkDisconnectReport (+4) " 4100 + Integer.toString(netId) + " " + info); 4101 } else { 4102 // We got disabled but RSSI is good, so disable hard 4103 config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_TEMPORARY_DISABLED 4104 + WifiConfiguration.UNWANTED_BLACKLIST_HARD_BUMP); 4105 loge("handleBadNetworkDisconnectReport (+8) " 4106 + Integer.toString(netId) + " " + info); 4107 } 4108 } 4109 // Record last time Connectivity Service switched us away from WiFi and onto Cell 4110 lastUnwantedNetworkDisconnectTimestamp = System.currentTimeMillis(); 4111 } 4112 4113 boolean handleBSSIDBlackList(int netId, String BSSID, boolean enable) { 4114 boolean found = false; 4115 if (BSSID == null) 4116 return found; 4117 4118 // Look for the BSSID in our config store 4119 for (WifiConfiguration config : mConfiguredNetworks.values()) { 4120 if (getScanDetailCache(config) != null) { 4121 for (ScanDetail scanDetail : getScanDetailCache(config).values()) { 4122 if (scanDetail.getBSSIDString().equals(BSSID)) { 4123 if (enable) { 4124 scanDetail.getScanResult().setAutoJoinStatus(ScanResult.ENABLED); 4125 } else { 4126 // Black list the BSSID we were trying to join 4127 // so as the Roam state machine 4128 // doesn't pick it up over and over 4129 scanDetail.getScanResult().setAutoJoinStatus( 4130 ScanResult.AUTO_ROAM_DISABLED); 4131 found = true; 4132 } 4133 } 4134 } 4135 } 4136 } 4137 return found; 4138 } 4139 4140 int getMaxDhcpRetries() { 4141 return Settings.Global.getInt(mContext.getContentResolver(), 4142 Settings.Global.WIFI_MAX_DHCP_RETRY_COUNT, 4143 DEFAULT_MAX_DHCP_RETRIES); 4144 } 4145 4146 void clearBssidBlacklist() { 4147 if (!mWifiStateMachine.useHalBasedAutoJoinOffload()) { 4148 if(DBG) { 4149 Log.d(TAG, "No blacklist allowed without epno enabled"); 4150 } 4151 return; 4152 } 4153 mBssidBlacklist = new HashSet<String>(); 4154 mWifiNative.clearBlacklist(); 4155 mWifiNative.setBssidBlacklist(null); 4156 } 4157 4158 void blackListBssid(String BSSID) { 4159 if (!mWifiStateMachine.useHalBasedAutoJoinOffload()) { 4160 if(DBG) { 4161 Log.d(TAG, "No blacklist allowed without epno enabled"); 4162 } 4163 return; 4164 } 4165 if (BSSID == null) 4166 return; 4167 mBssidBlacklist.add(BSSID); 4168 // Blacklist at wpa_supplicant 4169 mWifiNative.addToBlacklist(BSSID); 4170 // Blacklist at firmware 4171 String list[] = new String[mBssidBlacklist.size()]; 4172 int count = 0; 4173 for (String bssid : mBssidBlacklist) { 4174 list[count++] = bssid; 4175 } 4176 mWifiNative.setBssidBlacklist(list); 4177 } 4178 4179 void handleSSIDStateChange(int netId, boolean enabled, String message, String BSSID) { 4180 WifiConfiguration config = mConfiguredNetworks.get(netId); 4181 if (config != null) { 4182 if (enabled) { 4183 loge("Ignoring SSID re-enabled from supplicant: " + config.configKey() + 4184 " had autoJoinStatus=" + Integer.toString(config.autoJoinStatus) 4185 + " self added " + config.selfAdded + " ephemeral " + config.ephemeral); 4186 //We should not re-enable the BSSID based on Supplicant reanable. 4187 // Framework will re-enable it after its own blacklist timer expires 4188 } else { 4189 loge("SSID temp disabled for " + config.configKey() + 4190 " had autoJoinStatus=" + Integer.toString(config.autoJoinStatus) 4191 + " self added " + config.selfAdded + " ephemeral " + config.ephemeral); 4192 if (message != null) { 4193 loge(" message=" + message); 4194 } 4195 if (config.selfAdded && config.lastConnected == 0) { 4196 // This is a network we self added, and we never succeeded, 4197 // the user did not create this network and never entered its credentials, 4198 // so we want to be very aggressive in disabling it completely. 4199 removeConfigAndSendBroadcastIfNeeded(config.networkId); 4200 } else { 4201 if (message != null) { 4202 if (message.contains("no identity")) { 4203 config.setAutoJoinStatus( 4204 WifiConfiguration.AUTO_JOIN_DISABLED_NO_CREDENTIALS); 4205 if (DBG) { 4206 loge("no identity blacklisted " + config.configKey() + " to " 4207 + Integer.toString(config.autoJoinStatus)); 4208 } 4209 } else if (message.contains("WRONG_KEY") 4210 || message.contains("AUTH_FAILED")) { 4211 // This configuration has received an auth failure, so disable it 4212 // temporarily because we don't want auto-join to try it out. 4213 // this network may be re-enabled by the "usual" 4214 // enableAllNetwork function 4215 config.numAuthFailures++; 4216 if (config.numAuthFailures > maxAuthErrorsToBlacklist) { 4217 config.setAutoJoinStatus 4218 (WifiConfiguration.AUTO_JOIN_DISABLED_ON_AUTH_FAILURE); 4219 disableNetwork(netId, 4220 WifiConfiguration.DISABLED_AUTH_FAILURE); 4221 loge("Authentication failure, blacklist " + config.configKey() + " " 4222 + Integer.toString(config.networkId) 4223 + " num failures " + config.numAuthFailures); 4224 } 4225 } else if (message.contains("DHCP FAILURE")) { 4226 config.numIpConfigFailures++; 4227 config.lastConnectionFailure = System.currentTimeMillis(); 4228 int maxRetries = getMaxDhcpRetries(); 4229 // maxRetries == 0 means keep trying forever 4230 if (maxRetries > 0 && config.numIpConfigFailures > maxRetries) { 4231 /** 4232 * If we've exceeded the maximum number of retries for DHCP 4233 * to a given network, disable the network 4234 */ 4235 config.setAutoJoinStatus 4236 (WifiConfiguration.AUTO_JOIN_DISABLED_ON_AUTH_FAILURE); 4237 disableNetwork(netId, WifiConfiguration.DISABLED_DHCP_FAILURE); 4238 loge("DHCP failure, blacklist " + config.configKey() + " " 4239 + Integer.toString(config.networkId) 4240 + " num failures " + config.numIpConfigFailures); 4241 } 4242 4243 // Also blacklist the BSSId if we find it 4244 ScanResult result = null; 4245 String bssidDbg = ""; 4246 if (getScanDetailCache(config) != null && BSSID != null) { 4247 result = getScanDetailCache(config).get(BSSID); 4248 } 4249 if (result != null) { 4250 result.numIpConfigFailures ++; 4251 bssidDbg = BSSID + " ipfail=" + result.numIpConfigFailures; 4252 if (result.numIpConfigFailures > 3) { 4253 // Tell supplicant to stop trying this BSSID 4254 mWifiNative.addToBlacklist(BSSID); 4255 result.setAutoJoinStatus(ScanResult.AUTO_JOIN_DISABLED); 4256 } 4257 } 4258 4259 if (DBG) { 4260 loge("blacklisted " + config.configKey() + " to " 4261 + config.autoJoinStatus 4262 + " due to IP config failures, count=" 4263 + config.numIpConfigFailures 4264 + " disableReason=" + config.disableReason 4265 + " " + bssidDbg); 4266 } 4267 } else if (message.contains("CONN_FAILED")) { 4268 config.numConnectionFailures++; 4269 if (config.numConnectionFailures > maxConnectionErrorsToBlacklist) { 4270 config.setAutoJoinStatus 4271 (WifiConfiguration.AUTO_JOIN_DISABLED_ON_AUTH_FAILURE); 4272 disableNetwork(netId, 4273 WifiConfiguration.DISABLED_ASSOCIATION_REJECT); 4274 loge("Connection failure, blacklist " + config.configKey() + " " 4275 + config.networkId 4276 + " num failures " + config.numConnectionFailures); 4277 } 4278 } 4279 message.replace("\n", ""); 4280 message.replace("\r", ""); 4281 config.lastFailure = message; 4282 } 4283 } 4284 } 4285 } 4286 } 4287 4288 boolean installKeys(WifiEnterpriseConfig config, String name) { 4289 boolean ret = true; 4290 String privKeyName = Credentials.USER_PRIVATE_KEY + name; 4291 String userCertName = Credentials.USER_CERTIFICATE + name; 4292 String caCertName = Credentials.CA_CERTIFICATE + name; 4293 if (config.getClientCertificate() != null) { 4294 byte[] privKeyData = config.getClientPrivateKey().getEncoded(); 4295 if (isHardwareBackedKey(config.getClientPrivateKey())) { 4296 // Hardware backed key store is secure enough to store keys un-encrypted, this 4297 // removes the need for user to punch a PIN to get access to these keys 4298 if (DBG) Log.d(TAG, "importing keys " + name + " in hardware backed store"); 4299 ret = mKeyStore.importKey(privKeyName, privKeyData, android.os.Process.WIFI_UID, 4300 KeyStore.FLAG_NONE); 4301 } else { 4302 // Software backed key store is NOT secure enough to store keys un-encrypted. 4303 // Save keys encrypted so they are protected with user's PIN. User will 4304 // have to unlock phone before being able to use these keys and connect to 4305 // networks. 4306 if (DBG) Log.d(TAG, "importing keys " + name + " in software backed store"); 4307 ret = mKeyStore.importKey(privKeyName, privKeyData, Process.WIFI_UID, 4308 KeyStore.FLAG_ENCRYPTED); 4309 } 4310 if (ret == false) { 4311 return ret; 4312 } 4313 4314 ret = putCertInKeyStore(userCertName, config.getClientCertificate()); 4315 if (ret == false) { 4316 // Remove private key installed 4317 mKeyStore.delete(privKeyName, Process.WIFI_UID); 4318 return ret; 4319 } 4320 } 4321 4322 if (config.getCaCertificate() != null) { 4323 ret = putCertInKeyStore(caCertName, config.getCaCertificate()); 4324 if (ret == false) { 4325 if (config.getClientCertificate() != null) { 4326 // Remove client key+cert 4327 mKeyStore.delete(privKeyName, Process.WIFI_UID); 4328 mKeyStore.delete(userCertName, Process.WIFI_UID); 4329 } 4330 return ret; 4331 } 4332 } 4333 4334 // Set alias names 4335 if (config.getClientCertificate() != null) { 4336 config.setClientCertificateAlias(name); 4337 config.resetClientKeyEntry(); 4338 } 4339 4340 if (config.getCaCertificate() != null) { 4341 config.setCaCertificateAlias(name); 4342 config.resetCaCertificate(); 4343 } 4344 4345 return ret; 4346 } 4347 4348 private boolean putCertInKeyStore(String name, Certificate cert) { 4349 try { 4350 byte[] certData = Credentials.convertToPem(cert); 4351 if (DBG) Log.d(TAG, "putting certificate " + name + " in keystore"); 4352 return mKeyStore.put(name, certData, Process.WIFI_UID, KeyStore.FLAG_NONE); 4353 4354 } catch (IOException e1) { 4355 return false; 4356 } catch (CertificateException e2) { 4357 return false; 4358 } 4359 } 4360 4361 void removeKeys(WifiEnterpriseConfig config) { 4362 String client = config.getClientCertificateAlias(); 4363 // a valid client certificate is configured 4364 if (!TextUtils.isEmpty(client)) { 4365 if (DBG) Log.d(TAG, "removing client private key and user cert"); 4366 mKeyStore.delete(Credentials.USER_PRIVATE_KEY + client, Process.WIFI_UID); 4367 mKeyStore.delete(Credentials.USER_CERTIFICATE + client, Process.WIFI_UID); 4368 } 4369 4370 String ca = config.getCaCertificateAlias(); 4371 // a valid ca certificate is configured 4372 if (!TextUtils.isEmpty(ca)) { 4373 if (DBG) Log.d(TAG, "removing CA cert"); 4374 mKeyStore.delete(Credentials.CA_CERTIFICATE + ca, Process.WIFI_UID); 4375 } 4376 } 4377 4378 4379 /** Migrates the old style TLS config to the new config style. This should only be used 4380 * when restoring an old wpa_supplicant.conf or upgrading from a previous 4381 * platform version. 4382 * @return true if the config was updated 4383 * @hide 4384 */ 4385 boolean migrateOldEapTlsNative(WifiEnterpriseConfig config, int netId) { 4386 String oldPrivateKey = mWifiNative.getNetworkVariable(netId, OLD_PRIVATE_KEY_NAME); 4387 /* 4388 * If the old configuration value is not present, then there is nothing 4389 * to do. 4390 */ 4391 if (TextUtils.isEmpty(oldPrivateKey)) { 4392 return false; 4393 } else { 4394 // Also ignore it if it's empty quotes. 4395 oldPrivateKey = removeDoubleQuotes(oldPrivateKey); 4396 if (TextUtils.isEmpty(oldPrivateKey)) { 4397 return false; 4398 } 4399 } 4400 4401 config.setFieldValue(WifiEnterpriseConfig.ENGINE_KEY, WifiEnterpriseConfig.ENGINE_ENABLE); 4402 config.setFieldValue(WifiEnterpriseConfig.ENGINE_ID_KEY, 4403 WifiEnterpriseConfig.ENGINE_ID_KEYSTORE); 4404 4405 /* 4406 * The old key started with the keystore:// URI prefix, but we don't 4407 * need that anymore. Trim it off if it exists. 4408 */ 4409 final String keyName; 4410 if (oldPrivateKey.startsWith(WifiEnterpriseConfig.KEYSTORE_URI)) { 4411 keyName = new String( 4412 oldPrivateKey.substring(WifiEnterpriseConfig.KEYSTORE_URI.length())); 4413 } else { 4414 keyName = oldPrivateKey; 4415 } 4416 config.setFieldValue(WifiEnterpriseConfig.PRIVATE_KEY_ID_KEY, keyName); 4417 4418 mWifiNative.setNetworkVariable(netId, WifiEnterpriseConfig.ENGINE_KEY, 4419 config.getFieldValue(WifiEnterpriseConfig.ENGINE_KEY, "")); 4420 4421 mWifiNative.setNetworkVariable(netId, WifiEnterpriseConfig.ENGINE_ID_KEY, 4422 config.getFieldValue(WifiEnterpriseConfig.ENGINE_ID_KEY, "")); 4423 4424 mWifiNative.setNetworkVariable(netId, WifiEnterpriseConfig.PRIVATE_KEY_ID_KEY, 4425 config.getFieldValue(WifiEnterpriseConfig.PRIVATE_KEY_ID_KEY, "")); 4426 4427 // Remove old private_key string so we don't run this again. 4428 mWifiNative.setNetworkVariable(netId, OLD_PRIVATE_KEY_NAME, EMPTY_VALUE); 4429 4430 return true; 4431 } 4432 4433 /** Migrate certs from global pool to wifi UID if not already done */ 4434 void migrateCerts(WifiEnterpriseConfig config) { 4435 String client = config.getClientCertificateAlias(); 4436 // a valid client certificate is configured 4437 if (!TextUtils.isEmpty(client)) { 4438 if (!mKeyStore.contains(Credentials.USER_PRIVATE_KEY + client, Process.WIFI_UID)) { 4439 mKeyStore.duplicate(Credentials.USER_PRIVATE_KEY + client, -1, 4440 Credentials.USER_PRIVATE_KEY + client, Process.WIFI_UID); 4441 mKeyStore.duplicate(Credentials.USER_CERTIFICATE + client, -1, 4442 Credentials.USER_CERTIFICATE + client, Process.WIFI_UID); 4443 } 4444 } 4445 4446 String ca = config.getCaCertificateAlias(); 4447 // a valid ca certificate is configured 4448 if (!TextUtils.isEmpty(ca)) { 4449 if (!mKeyStore.contains(Credentials.CA_CERTIFICATE + ca, Process.WIFI_UID)) { 4450 mKeyStore.duplicate(Credentials.CA_CERTIFICATE + ca, -1, 4451 Credentials.CA_CERTIFICATE + ca, Process.WIFI_UID); 4452 } 4453 } 4454 } 4455 4456 private void readNetworkBitsetVariable(int netId, BitSet variable, String varName, 4457 String[] strings) { 4458 String value = mWifiNative.getNetworkVariable(netId, varName); 4459 if (!TextUtils.isEmpty(value)) { 4460 variable.clear(); 4461 String vals[] = value.split(" "); 4462 for (String val : vals) { 4463 int index = lookupString(val, strings); 4464 if (0 <= index) { 4465 variable.set(index); 4466 } 4467 } 4468 } 4469 } 4470} 4471