WifiConfigStore.java revision a8647b8cb29de22765062714cb265247234c3d32
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(true); 396 public final AtomicBoolean enableSsidWhitelist = new AtomicBoolean(true); 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) { 793 794 for (Map.Entry entry : mScanDetailCaches.entrySet()) { 795 Integer netId = (Integer) entry.getKey(); 796 ScanDetailCache cache = (ScanDetailCache) entry.getValue(); 797 WifiConfiguration config = getWifiConfiguration(netId); 798 if (config == null) 799 continue; 800 if (cache.get(scanResult.BSSID) != null) { 801 return config; 802 } 803 } 804 805 return null; 806 } 807 808 /** 809 * Fetch the preSharedKeys for all networks. 810 * @return a map from Ssid to preSharedKey. 811 */ 812 private Map<String, String> getCredentialsBySsidMap() { 813 return readNetworkVariablesFromSupplicantFile("psk"); 814 } 815 816 /** 817 * Fetch the list of currently configured networks that were recently seen 818 * 819 * @return List of networks 820 */ 821 List<WifiConfiguration> getRecentConfiguredNetworks(int milli, boolean copy) { 822 List<WifiConfiguration> networks = new ArrayList<WifiConfiguration>(); 823 824 for (WifiConfiguration config : mConfiguredNetworks.values()) { 825 if (config.autoJoinStatus == WifiConfiguration.AUTO_JOIN_DELETED || config.ephemeral) { 826 // Do not enumerate and return this configuration to any one, 827 // instead treat it as unknown. the configuration can still be retrieved 828 // directly by the key or networkId 829 continue; 830 } 831 832 // Calculate the RSSI for scan results that are more recent than milli 833 ScanDetailCache cache = getScanDetailCache(config); 834 if (cache == null) { 835 continue; 836 } 837 config.setVisibility(cache.getVisibility(milli)); 838 if (config.visibility == null) { 839 continue; 840 } 841 if (config.visibility.rssi5 == WifiConfiguration.INVALID_RSSI && 842 config.visibility.rssi24 == WifiConfiguration.INVALID_RSSI) { 843 continue; 844 } 845 if (copy) { 846 networks.add(new WifiConfiguration(config)); 847 } else { 848 networks.add(config); 849 } 850 } 851 return networks; 852 } 853 854 /** 855 * Update the configuration and BSSID with latest RSSI value. 856 */ 857 void updateConfiguration(WifiInfo info) { 858 WifiConfiguration config = getWifiConfiguration(info.getNetworkId()); 859 if (config != null && getScanDetailCache(config) != null) { 860 ScanDetail scanDetail = getScanDetailCache(config).getScanDetail(info.getBSSID()); 861 if (scanDetail != null) { 862 ScanResult result = scanDetail.getScanResult(); 863 long previousSeen = result.seen; 864 int previousRssi = result.level; 865 866 // Update the scan result 867 scanDetail.setSeen(); 868 result.level = info.getRssi(); 869 870 // Average the RSSI value 871 result.averageRssi(previousRssi, previousSeen, 872 WifiAutoJoinController.mScanResultMaximumAge); 873 if (VDBG) { 874 loge("updateConfiguration freq=" + result.frequency 875 + " BSSID=" + result.BSSID 876 + " RSSI=" + result.level 877 + " " + config.configKey()); 878 } 879 } 880 } 881 } 882 883 /** 884 * get the Wificonfiguration for this netId 885 * 886 * @return Wificonfiguration 887 */ 888 WifiConfiguration getWifiConfiguration(int netId) { 889 return mConfiguredNetworks.get(netId); 890 } 891 892 /** 893 * Get the Wificonfiguration for this key 894 * @return Wificonfiguration 895 */ 896 WifiConfiguration getWifiConfiguration(String key) { 897 return mConfiguredNetworks.getByConfigKey(key); 898 } 899 900 /** 901 * Enable all networks and save config. This will be a no-op if the list 902 * of configured networks indicates all networks as being enabled 903 */ 904 void enableAllNetworks() { 905 long now = System.currentTimeMillis(); 906 boolean networkEnabledStateChanged = false; 907 908 for(WifiConfiguration config : mConfiguredNetworks.values()) { 909 910 if(config != null && config.status == Status.DISABLED && !config.ephemeral 911 && (config.autoJoinStatus 912 <= WifiConfiguration.AUTO_JOIN_DISABLED_ON_AUTH_FAILURE)) { 913 914 // Wait for 5 minutes before reenabling config that have known, repeated connection 915 // or DHCP failures 916 if (config.disableReason == WifiConfiguration.DISABLED_DHCP_FAILURE 917 || config.disableReason == WifiConfiguration.DISABLED_ASSOCIATION_REJECT 918 || config.disableReason == WifiConfiguration.DISABLED_AUTH_FAILURE) { 919 if (config.blackListTimestamp != 0 920 && now > config.blackListTimestamp 921 && (now - config.blackListTimestamp) < wifiConfigBlacklistMinTimeMilli) { 922 continue; 923 } 924 } 925 926 if(mWifiNative.enableNetwork(config.networkId, false)) { 927 networkEnabledStateChanged = true; 928 config.status = Status.ENABLED; 929 930 // Reset the blacklist condition 931 config.numConnectionFailures = 0; 932 config.numIpConfigFailures = 0; 933 config.numAuthFailures = 0; 934 935 // Reenable the wifi configuration 936 config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 937 } else { 938 loge("Enable network failed on " + config.networkId); 939 940 } 941 } 942 } 943 944 if (networkEnabledStateChanged) { 945 mWifiNative.saveConfig(); 946 sendConfiguredNetworksChangedBroadcast(); 947 } 948 } 949 950 private boolean setNetworkPriorityNative(int netId, int priority) { 951 return mWifiNative.setNetworkVariable(netId, 952 WifiConfiguration.priorityVarName, Integer.toString(priority)); 953 } 954 955 private boolean setSSIDNative(int netId, String ssid) { 956 return mWifiNative.setNetworkVariable(netId, WifiConfiguration.ssidVarName, 957 encodeSSID(ssid)); 958 } 959 960 public boolean updateLastConnectUid(WifiConfiguration config, int uid) { 961 if (config != null) { 962 if (config.lastConnectUid != uid) { 963 config.lastConnectUid = uid; 964 config.dirty = true; 965 return true; 966 } 967 } 968 return false; 969 } 970 971 /** 972 * Selects the specified network for connection. This involves 973 * updating the priority of all the networks and enabling the given 974 * network while disabling others. 975 * 976 * Selecting a network will leave the other networks disabled and 977 * a call to enableAllNetworks() needs to be issued upon a connection 978 * or a failure event from supplicant 979 * 980 * @param config network to select for connection 981 * @param updatePriorities makes config highest priority network 982 * @return false if the network id is invalid 983 */ 984 boolean selectNetwork(WifiConfiguration config, boolean updatePriorities, int uid) { 985 if (VDBG) localLog("selectNetwork", config.networkId); 986 if (config.networkId == INVALID_NETWORK_ID) return false; 987 988 // Reset the priority of each network at start or if it goes too high. 989 if (mLastPriority == -1 || mLastPriority > 1000000) { 990 for(WifiConfiguration config2 : mConfiguredNetworks.values()) { 991 if (updatePriorities) { 992 if (config2.networkId != INVALID_NETWORK_ID) { 993 config2.priority = 0; 994 setNetworkPriorityNative(config2.networkId, config.priority); 995 } 996 } 997 } 998 mLastPriority = 0; 999 } 1000 1001 // Set to the highest priority and save the configuration. 1002 if (updatePriorities) { 1003 config.priority = ++mLastPriority; 1004 setNetworkPriorityNative(config.networkId, config.priority); 1005 buildPnoList(); 1006 } 1007 1008 if (config.isPasspoint()) { 1009 /* need to slap on the SSID of selected bssid to work */ 1010 if (getScanDetailCache(config).size() != 0) { 1011 ScanDetail result = getScanDetailCache(config).getFirst(); 1012 if (result == null) { 1013 loge("Could not find scan result for " + config.BSSID); 1014 } else { 1015 log("Setting SSID for " + config.networkId + " to" + result.getSSID()); 1016 setSSIDNative(config.networkId, result.getSSID()); 1017 } 1018 1019 } else { 1020 loge("Could not find bssid for " + config); 1021 } 1022 } 1023 1024 if (updatePriorities) 1025 mWifiNative.saveConfig(); 1026 else 1027 mWifiNative.selectNetwork(config.networkId); 1028 1029 updateLastConnectUid(config, uid); 1030 writeKnownNetworkHistory(false); 1031 1032 /* Enable the given network while disabling all other networks */ 1033 enableNetworkWithoutBroadcast(config.networkId, true); 1034 1035 /* Avoid saving the config & sending a broadcast to prevent settings 1036 * from displaying a disabled list of networks */ 1037 return true; 1038 } 1039 1040 /** 1041 * Add/update the specified configuration and save config 1042 * 1043 * @param config WifiConfiguration to be saved 1044 * @return network update result 1045 */ 1046 NetworkUpdateResult saveNetwork(WifiConfiguration config, int uid) { 1047 WifiConfiguration conf; 1048 1049 // A new network cannot have null SSID 1050 if (config == null || (config.networkId == INVALID_NETWORK_ID && 1051 config.SSID == null)) { 1052 return new NetworkUpdateResult(INVALID_NETWORK_ID); 1053 } 1054 if (VDBG) localLog("WifiConfigStore: saveNetwork netId", config.networkId); 1055 if (VDBG) { 1056 loge("WifiConfigStore saveNetwork, size=" + mConfiguredNetworks.size() 1057 + " SSID=" + config.SSID 1058 + " Uid=" + Integer.toString(config.creatorUid) 1059 + "/" + Integer.toString(config.lastUpdateUid)); 1060 } 1061 1062 if (mDeletedEphemeralSSIDs.remove(config.SSID)) { 1063 if (VDBG) { 1064 loge("WifiConfigStore: removed from ephemeral blacklist: " + config.SSID); 1065 } 1066 // NOTE: This will be flushed to disk as part of the addOrUpdateNetworkNative call 1067 // below, since we're creating/modifying a config. 1068 } 1069 1070 boolean newNetwork = (config.networkId == INVALID_NETWORK_ID); 1071 NetworkUpdateResult result = addOrUpdateNetworkNative(config, uid); 1072 int netId = result.getNetworkId(); 1073 1074 if (VDBG) localLog("WifiConfigStore: saveNetwork got it back netId=", netId); 1075 1076 /* enable a new network */ 1077 if (newNetwork && netId != INVALID_NETWORK_ID) { 1078 if (VDBG) localLog("WifiConfigStore: will enable netId=", netId); 1079 1080 mWifiNative.enableNetwork(netId, false); 1081 conf = mConfiguredNetworks.get(netId); 1082 if (conf != null) 1083 conf.status = Status.ENABLED; 1084 } 1085 1086 conf = mConfiguredNetworks.get(netId); 1087 if (conf != null) { 1088 if (conf.autoJoinStatus != WifiConfiguration.AUTO_JOIN_ENABLED) { 1089 if (VDBG) localLog("WifiConfigStore: re-enabling: " + conf.SSID); 1090 1091 // reenable autojoin, since new information has been provided 1092 conf.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 1093 enableNetworkWithoutBroadcast(conf.networkId, false); 1094 } 1095 if (VDBG) { 1096 loge("WifiConfigStore: saveNetwork got config back netId=" 1097 + Integer.toString(netId) 1098 + " uid=" + Integer.toString(config.creatorUid)); 1099 } 1100 } 1101 1102 mWifiNative.saveConfig(); 1103 sendConfiguredNetworksChangedBroadcast(conf, result.isNewNetwork() ? 1104 WifiManager.CHANGE_REASON_ADDED : WifiManager.CHANGE_REASON_CONFIG_CHANGE); 1105 return result; 1106 } 1107 1108 /** 1109 * Firmware is roaming away from this BSSID, and this BSSID was on 5GHz, and it's RSSI was good, 1110 * this means we have a situation where we would want to remain on this BSSID but firmware 1111 * is not successful at it. 1112 * This situation is observed on a small number of Access Points, b/17960587 1113 * In that situation, blacklist this BSSID really hard so as framework will not attempt to 1114 * roam to it for the next 8 hours. We do not to keep flipping between 2.4 and 5GHz band.. 1115 * TODO: review the blacklisting strategy so as to make it softer and adaptive 1116 * @param info 1117 */ 1118 void driverRoamedFrom(WifiInfo info) { 1119 if (info != null 1120 && info.getBSSID() != null 1121 && ScanResult.is5GHz(info.getFrequency()) 1122 && info.getRssi() > (bandPreferenceBoostThreshold5.get() + 3)) { 1123 WifiConfiguration config = getWifiConfiguration(info.getNetworkId()); 1124 if (config != null) { 1125 if (getScanDetailCache(config) != null) { 1126 ScanResult result = getScanDetailCache(config).get(info.getBSSID()); 1127 if (result != null) { 1128 result.setAutoJoinStatus(ScanResult.AUTO_ROAM_DISABLED + 1); 1129 } 1130 } 1131 } 1132 } 1133 } 1134 1135 void noteRoamingFailure(WifiConfiguration config, int reason) { 1136 if (config == null) return; 1137 config.lastRoamingFailure = System.currentTimeMillis(); 1138 config.roamingFailureBlackListTimeMilli 1139 = 2 * (config.roamingFailureBlackListTimeMilli + 1000); 1140 if (config.roamingFailureBlackListTimeMilli 1141 > networkSwitchingBlackListPeriodMilli) { 1142 config.roamingFailureBlackListTimeMilli = 1143 networkSwitchingBlackListPeriodMilli; 1144 } 1145 config.lastRoamingFailureReason = reason; 1146 } 1147 1148 void saveWifiConfigBSSID(WifiConfiguration config) { 1149 // Sanity check the config is valid 1150 if (config == null || (config.networkId == INVALID_NETWORK_ID && 1151 config.SSID == null)) { 1152 return; 1153 } 1154 1155 // If an app specified a BSSID then dont over-write it 1156 if (config.BSSID != null && config.BSSID != "any") { 1157 return; 1158 } 1159 1160 // If autojoin specified a BSSID then write it in the network block 1161 if (config.autoJoinBSSID != null) { 1162 loge("saveWifiConfigBSSID Setting BSSID for " + config.configKey() 1163 + " to " + config.autoJoinBSSID); 1164 if (!mWifiNative.setNetworkVariable( 1165 config.networkId, 1166 WifiConfiguration.bssidVarName, 1167 config.autoJoinBSSID)) { 1168 loge("failed to set BSSID: " + config.autoJoinBSSID); 1169 } else if (config.autoJoinBSSID.equals("any")) { 1170 // Paranoia, we just want to make sure that we restore the config to normal 1171 mWifiNative.saveConfig(); 1172 } 1173 } 1174 } 1175 1176 1177 void updateStatus(int netId, DetailedState state) { 1178 if (netId != INVALID_NETWORK_ID) { 1179 WifiConfiguration config = mConfiguredNetworks.get(netId); 1180 if (config == null) return; 1181 switch (state) { 1182 case CONNECTED: 1183 config.status = Status.CURRENT; 1184 //we successfully connected, hence remove the blacklist 1185 config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 1186 break; 1187 case DISCONNECTED: 1188 //If network is already disabled, keep the status 1189 if (config.status == Status.CURRENT) { 1190 config.status = Status.ENABLED; 1191 } 1192 break; 1193 default: 1194 //do nothing, retain the existing state 1195 break; 1196 } 1197 } 1198 } 1199 1200 1201 /** 1202 * Disable an ephemeral SSID for the purpose of auto-joining thru scored. 1203 * This SSID will never be scored anymore. 1204 * The only way to "un-disable it" is if the user create a network for that SSID and then 1205 * forget it. 1206 * 1207 * @param SSID caller must ensure that the SSID passed thru this API match 1208 * the WifiConfiguration.SSID rules, and thus be surrounded by quotes. 1209 * @return the {@link WifiConfiguration} corresponding to this SSID, if any, so that we can 1210 * disconnect if this is the current network. 1211 */ 1212 WifiConfiguration disableEphemeralNetwork(String SSID) { 1213 if (SSID == null) { 1214 return null; 1215 } 1216 1217 WifiConfiguration foundConfig = mConfiguredNetworks.getEphemeral(SSID); 1218 1219 mDeletedEphemeralSSIDs.add(SSID); 1220 loge("Forget ephemeral SSID " + SSID + " num=" + mDeletedEphemeralSSIDs.size()); 1221 1222 if (foundConfig != null) { 1223 loge("Found ephemeral config in disableEphemeralNetwork: " + foundConfig.networkId); 1224 } 1225 1226 // Force a write, because the mDeletedEphemeralSSIDs list has changed even though the 1227 // configurations may not have. 1228 writeKnownNetworkHistory(true); 1229 1230 return foundConfig; 1231 } 1232 1233 /** 1234 * Forget the specified network and save config 1235 * 1236 * @param netId network to forget 1237 * @return {@code true} if it succeeds, {@code false} otherwise 1238 */ 1239 boolean forgetNetwork(int netId) { 1240 if (showNetworks) localLog("forgetNetwork", netId); 1241 1242 WifiConfiguration config = mConfiguredNetworks.get(netId); 1243 boolean remove = removeConfigAndSendBroadcastIfNeeded(netId); 1244 if (!remove) { 1245 //success but we dont want to remove the network from supplicant conf file 1246 return true; 1247 } 1248 if (mWifiNative.removeNetwork(netId)) { 1249 if (config != null && config.isPasspoint()) { 1250 writePasspointConfigs(config.FQDN, null); 1251 } 1252 mWifiNative.saveConfig(); 1253 writeKnownNetworkHistory(true); 1254 return true; 1255 } else { 1256 loge("Failed to remove network " + netId); 1257 return false; 1258 } 1259 } 1260 1261 /** 1262 * Add/update a network. Note that there is no saveConfig operation. 1263 * This function is retained for compatibility with the public 1264 * API. The more powerful saveNetwork() is used by the 1265 * state machine 1266 * 1267 * @param config wifi configuration to add/update 1268 * @return network Id 1269 */ 1270 int addOrUpdateNetwork(WifiConfiguration config, int uid) { 1271 if (showNetworks) localLog("addOrUpdateNetwork id=", config.networkId); 1272 //adding unconditional message to chase b/15111865 1273 Log.e(TAG, " key=" + config.configKey() + " netId=" + Integer.toString(config.networkId) 1274 + " uid=" + Integer.toString(config.creatorUid) 1275 + "/" + Integer.toString(config.lastUpdateUid)); 1276 1277 if (config.isPasspoint()) { 1278 /* create a temporary SSID with providerFriendlyName */ 1279 Long csum = getChecksum(config.FQDN); 1280 config.SSID = csum.toString(); 1281 } 1282 1283 NetworkUpdateResult result = addOrUpdateNetworkNative(config, uid); 1284 if (result.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 1285 WifiConfiguration conf = mConfiguredNetworks.get(result.getNetworkId()); 1286 if (conf != null) { 1287 sendConfiguredNetworksChangedBroadcast(conf, 1288 result.isNewNetwork ? WifiManager.CHANGE_REASON_ADDED : 1289 WifiManager.CHANGE_REASON_CONFIG_CHANGE); 1290 } 1291 } 1292 1293 return result.getNetworkId(); 1294 } 1295 1296 1297 /** 1298 * Get the Wifi PNO list 1299 * 1300 * @return list of WifiNative.WifiPnoNetwork 1301 */ 1302 private void buildPnoList() { 1303 mCachedPnoList = new ArrayList<WifiNative.WifiPnoNetwork>(); 1304 1305 ArrayList<WifiConfiguration> sortedWifiConfigurations 1306 = new ArrayList<WifiConfiguration>(getConfiguredNetworks()); 1307 Log.e(TAG, "buildPnoList sortedWifiConfigurations size " + sortedWifiConfigurations.size()); 1308 if (sortedWifiConfigurations.size() != 0) { 1309 // Sort by descending priority 1310 Collections.sort(sortedWifiConfigurations, new Comparator<WifiConfiguration>() { 1311 public int compare(WifiConfiguration a, WifiConfiguration b) { 1312 return a.priority >= b.priority ? 1 : -1; 1313 } 1314 }); 1315 } 1316 1317 for (WifiConfiguration config : sortedWifiConfigurations) { 1318 // Initialize the RSSI threshold with sane value: 1319 // Use the 2.4GHz threshold since most WifiConfigurations are dual bands 1320 // There is very little penalty with triggering too soon, i.e. if PNO finds a network 1321 // that has an RSSI too low for us to attempt joining it. 1322 int threshold = thresholdInitialAutoJoinAttemptMin24RSSI.get(); 1323 Log.e(TAG, "found sortedWifiConfigurations : " + config.configKey()); 1324 WifiNative.WifiPnoNetwork network = mWifiNative.new WifiPnoNetwork(config, threshold); 1325 mCachedPnoList.add(network); 1326 } 1327 } 1328 1329 String[] getWhiteListedSsids(WifiConfiguration config) { 1330 int num_ssids = 0; 1331 String nonQuoteSSID; 1332 int length; 1333 if (enableSsidWhitelist.get() == false) 1334 return null; 1335 List<String> list = new ArrayList<String>(); 1336 if (config == null) 1337 return null; 1338 if (config.linkedConfigurations == null) { 1339 return null; 1340 } 1341 if (config.SSID == null || TextUtils.isEmpty(config.SSID)) { 1342 return null; 1343 } 1344 for (String configKey : config.linkedConfigurations.keySet()) { 1345 1346 // Sanity check that the linked configuration is still valid 1347 WifiConfiguration link = getWifiConfiguration(configKey); 1348 if (link == null) { 1349 continue; 1350 } 1351 1352 if (link.autoJoinStatus != WifiConfiguration.AUTO_JOIN_ENABLED) { 1353 continue; 1354 } 1355 1356 if (link.hiddenSSID == true) { 1357 continue; 1358 } 1359 1360 if (link.SSID == null || TextUtils.isEmpty(link.SSID)) { 1361 continue; 1362 } 1363 1364 length = link.SSID.length(); 1365 if (length > 2 && (link.SSID.charAt(0) == '"') && link.SSID.charAt(length - 1) == '"') { 1366 nonQuoteSSID = link.SSID.substring(1, length - 1); 1367 } else { 1368 nonQuoteSSID = link.SSID; 1369 } 1370 1371 list.add(nonQuoteSSID); 1372 } 1373 1374 if (list.size() != 0) { 1375 length = config.SSID.length(); 1376 if (length > 2 && (config.SSID.charAt(0) == '"') 1377 && config.SSID.charAt(length - 1) == '"') { 1378 nonQuoteSSID = config.SSID.substring(1, length - 1); 1379 } else { 1380 nonQuoteSSID = config.SSID; 1381 } 1382 1383 list.add(nonQuoteSSID); 1384 } 1385 1386 return (String[])list.toArray(new String[0]); 1387 } 1388 1389 /** 1390 * Remove a network. Note that there is no saveConfig operation. 1391 * This function is retained for compatibility with the public 1392 * API. The more powerful forgetNetwork() is used by the 1393 * state machine for network removal 1394 * 1395 * @param netId network to be removed 1396 * @return {@code true} if it succeeds, {@code false} otherwise 1397 */ 1398 boolean removeNetwork(int netId) { 1399 if (showNetworks) localLog("removeNetwork", netId); 1400 WifiConfiguration config = mConfiguredNetworks.get(netId); 1401 boolean ret = mWifiNative.removeNetwork(netId); 1402 if (ret) { 1403 removeConfigAndSendBroadcastIfNeeded(netId); 1404 if (config != null && config.isPasspoint()) { 1405 writePasspointConfigs(config.FQDN, null); 1406 } 1407 } 1408 return ret; 1409 } 1410 1411 1412 static private Long getChecksum(String source) { 1413 Checksum csum = new CRC32(); 1414 csum.update(source.getBytes(), 0, source.getBytes().length); 1415 return csum.getValue(); 1416 } 1417 1418 private boolean removeConfigAndSendBroadcastIfNeeded(int netId) { 1419 WifiConfiguration config = mConfiguredNetworks.get(netId); 1420 if (config != null) { 1421 if (VDBG) { 1422 loge("removeNetwork " + Integer.toString(netId) + " key=" + 1423 config.configKey() + " config.id=" + Integer.toString(config.networkId)); 1424 } 1425 1426 // cancel the last user choice 1427 if (config.configKey().equals(lastSelectedConfiguration)) { 1428 lastSelectedConfiguration = null; 1429 } 1430 1431 // Remove any associated keys 1432 if (config.enterpriseConfig != null) { 1433 removeKeys(config.enterpriseConfig); 1434 } 1435 1436 if (config.selfAdded || config.linkedConfigurations != null 1437 || config.allowedKeyManagement.get(KeyMgmt.WPA_PSK)) { 1438 if (!TextUtils.isEmpty(config.SSID)) { 1439 /* Remember that we deleted this PSK SSID */ 1440 if (config.SSID != null) { 1441 Long csum = getChecksum(config.SSID); 1442 mDeletedSSIDs.add(csum); 1443 loge("removeNetwork " + Integer.toString(netId) 1444 + " key=" + config.configKey() 1445 + " config.id=" + Integer.toString(config.networkId) 1446 + " crc=" + csum); 1447 } else { 1448 loge("removeNetwork " + Integer.toString(netId) 1449 + " key=" + config.configKey() 1450 + " config.id=" + Integer.toString(config.networkId)); 1451 } 1452 } 1453 } 1454 1455 mConfiguredNetworks.remove(netId); 1456 mScanDetailCaches.remove(netId); 1457 1458 writeIpAndProxyConfigurations(); 1459 sendConfiguredNetworksChangedBroadcast(config, WifiManager.CHANGE_REASON_REMOVED); 1460 writeKnownNetworkHistory(true); 1461 } 1462 return true; 1463 } 1464 1465 /* 1466 * Remove all networks associated with an application 1467 * 1468 * @param packageName name of the package of networks to remove 1469 * @return {@code true} if all networks removed successfully, {@code false} otherwise 1470 */ 1471 boolean removeNetworksForApp(ApplicationInfo app) { 1472 if (app == null || app.packageName == null) { 1473 return false; 1474 } 1475 1476 boolean success = true; 1477 1478 WifiConfiguration [] copiedConfigs = 1479 mConfiguredNetworks.values().toArray(new WifiConfiguration[0]); 1480 for (WifiConfiguration config : copiedConfigs) { 1481 if (app.uid != config.creatorUid || !app.packageName.equals(config.creatorName)) { 1482 continue; 1483 } 1484 if (showNetworks) { 1485 localLog("Removing network " + config.SSID 1486 + ", application \"" + app.packageName + "\" uninstalled" 1487 + " from user " + UserHandle.getUserId(app.uid)); 1488 } 1489 success &= removeNetwork(config.networkId); 1490 } 1491 1492 mWifiNative.saveConfig(); 1493 1494 return success; 1495 } 1496 1497 boolean removeNetworksForUser(int userId) { 1498 boolean success = true; 1499 1500 WifiConfiguration[] copiedConfigs = 1501 mConfiguredNetworks.values().toArray(new WifiConfiguration[0]); 1502 for (WifiConfiguration config : copiedConfigs) { 1503 if (userId != UserHandle.getUserId(config.creatorUid)) { 1504 continue; 1505 } 1506 success &= removeNetwork(config.networkId); 1507 if (showNetworks) { 1508 localLog("Removing network " + config.SSID 1509 + ", user " + userId + " removed"); 1510 } 1511 } 1512 1513 return success; 1514 } 1515 1516 /** 1517 * Enable a network. Note that there is no saveConfig operation. 1518 * This function is retained for compatibility with the public 1519 * API. The more powerful selectNetwork()/saveNetwork() is used by the 1520 * state machine for connecting to a network 1521 * 1522 * @param netId network to be enabled 1523 * @return {@code true} if it succeeds, {@code false} otherwise 1524 */ 1525 boolean enableNetwork(int netId, boolean disableOthers, int uid) { 1526 boolean ret = enableNetworkWithoutBroadcast(netId, disableOthers); 1527 if (disableOthers) { 1528 if (VDBG) localLog("enableNetwork(disableOthers=true, uid=" + uid + ") ", netId); 1529 updateLastConnectUid(getWifiConfiguration(netId), uid); 1530 writeKnownNetworkHistory(false); 1531 sendConfiguredNetworksChangedBroadcast(); 1532 } else { 1533 if (VDBG) localLog("enableNetwork(disableOthers=false) ", netId); 1534 WifiConfiguration enabledNetwork; 1535 synchronized(mConfiguredNetworks) { // !!! Useless synchronization! 1536 enabledNetwork = mConfiguredNetworks.get(netId); 1537 } 1538 // check just in case the network was removed by someone else. 1539 if (enabledNetwork != null) { 1540 sendConfiguredNetworksChangedBroadcast(enabledNetwork, 1541 WifiManager.CHANGE_REASON_CONFIG_CHANGE); 1542 } 1543 } 1544 return ret; 1545 } 1546 1547 boolean enableNetworkWithoutBroadcast(int netId, boolean disableOthers) { 1548 boolean ret = mWifiNative.enableNetwork(netId, disableOthers); 1549 1550 WifiConfiguration config = mConfiguredNetworks.get(netId); 1551 if (config != null) config.status = Status.ENABLED; 1552 1553 if (disableOthers) { 1554 markAllNetworksDisabledExcept(netId); 1555 } 1556 return ret; 1557 } 1558 1559 void disableAllNetworks() { 1560 if (VDBG) localLog("disableAllNetworks"); 1561 boolean networkDisabled = false; 1562 for (WifiConfiguration enabled : mConfiguredNetworks.getEnabledNetworks()) { 1563 if(mWifiNative.disableNetwork(enabled.networkId)) { 1564 networkDisabled = true; 1565 enabled.status = Status.DISABLED; 1566 } else { 1567 loge("Disable network failed on " + enabled.networkId); 1568 } 1569 } 1570 1571 if (networkDisabled) { 1572 sendConfiguredNetworksChangedBroadcast(); 1573 } 1574 } 1575 /** 1576 * Disable a network. Note that there is no saveConfig operation. 1577 * @param netId network to be disabled 1578 * @return {@code true} if it succeeds, {@code false} otherwise 1579 */ 1580 boolean disableNetwork(int netId) { 1581 boolean ret = disableNetwork(netId, WifiConfiguration.DISABLED_UNKNOWN_REASON); 1582 if (ret) { 1583 mWifiStateMachine.registerNetworkDisabled(netId); 1584 } 1585 return ret; 1586 } 1587 1588 /** 1589 * Disable a network. Note that there is no saveConfig operation. 1590 * @param netId network to be disabled 1591 * @param reason reason code network was disabled 1592 * @return {@code true} if it succeeds, {@code false} otherwise 1593 */ 1594 boolean disableNetwork(int netId, int reason) { 1595 if (VDBG) localLog("disableNetwork", netId); 1596 boolean ret = mWifiNative.disableNetwork(netId); 1597 WifiConfiguration network = null; 1598 WifiConfiguration config = mConfiguredNetworks.get(netId); 1599 1600 if (VDBG) { 1601 if (config != null) { 1602 loge("disableNetwork netId=" + Integer.toString(netId) 1603 + " SSID=" + config.SSID 1604 + " disabled=" + (config.status == Status.DISABLED) 1605 + " reason=" + Integer.toString(config.disableReason)); 1606 } 1607 } 1608 /* Only change the reason if the network was not previously disabled 1609 /* and the reason is not DISABLED_BY_WIFI_MANAGER, that is, if a 3rd party 1610 * set its configuration as disabled, then leave it disabled */ 1611 if (config != null) { 1612 if (config.status != Status.DISABLED 1613 && config.disableReason != WifiConfiguration.DISABLED_BY_WIFI_MANAGER) { 1614 config.status = Status.DISABLED; 1615 config.disableReason = reason; 1616 network = config; 1617 } 1618 if (reason == WifiConfiguration.DISABLED_BY_WIFI_MANAGER) { 1619 // Make sure autojoin wont reenable this configuration without further user 1620 // intervention 1621 config.status = Status.DISABLED; 1622 config.autoJoinStatus = WifiConfiguration.AUTO_JOIN_DISABLED_USER_ACTION; 1623 } 1624 } 1625 if (network != null) { 1626 sendConfiguredNetworksChangedBroadcast(network, 1627 WifiManager.CHANGE_REASON_CONFIG_CHANGE); 1628 } 1629 return ret; 1630 } 1631 1632 /** 1633 * Save the configured networks in supplicant to disk 1634 * @return {@code true} if it succeeds, {@code false} otherwise 1635 */ 1636 boolean saveConfig() { 1637 return mWifiNative.saveConfig(); 1638 } 1639 1640 /** 1641 * Start WPS pin method configuration with pin obtained 1642 * from the access point 1643 * @param config WPS configuration 1644 * @return Wps result containing status and pin 1645 */ 1646 WpsResult startWpsWithPinFromAccessPoint(WpsInfo config) { 1647 WpsResult result = new WpsResult(); 1648 if (mWifiNative.startWpsRegistrar(config.BSSID, config.pin)) { 1649 /* WPS leaves all networks disabled */ 1650 markAllNetworksDisabled(); 1651 result.status = WpsResult.Status.SUCCESS; 1652 } else { 1653 loge("Failed to start WPS pin method configuration"); 1654 result.status = WpsResult.Status.FAILURE; 1655 } 1656 return result; 1657 } 1658 1659 /** 1660 * Start WPS pin method configuration with pin obtained 1661 * from the device 1662 * @return WpsResult indicating status and pin 1663 */ 1664 WpsResult startWpsWithPinFromDevice(WpsInfo config) { 1665 WpsResult result = new WpsResult(); 1666 result.pin = mWifiNative.startWpsPinDisplay(config.BSSID); 1667 /* WPS leaves all networks disabled */ 1668 if (!TextUtils.isEmpty(result.pin)) { 1669 markAllNetworksDisabled(); 1670 result.status = WpsResult.Status.SUCCESS; 1671 } else { 1672 loge("Failed to start WPS pin method configuration"); 1673 result.status = WpsResult.Status.FAILURE; 1674 } 1675 return result; 1676 } 1677 1678 /** 1679 * Start WPS push button configuration 1680 * @param config WPS configuration 1681 * @return WpsResult indicating status and pin 1682 */ 1683 WpsResult startWpsPbc(WpsInfo config) { 1684 WpsResult result = new WpsResult(); 1685 if (mWifiNative.startWpsPbc(config.BSSID)) { 1686 /* WPS leaves all networks disabled */ 1687 markAllNetworksDisabled(); 1688 result.status = WpsResult.Status.SUCCESS; 1689 } else { 1690 loge("Failed to start WPS push button configuration"); 1691 result.status = WpsResult.Status.FAILURE; 1692 } 1693 return result; 1694 } 1695 1696 /** 1697 * Fetch the static IP configuration for a given network id 1698 */ 1699 StaticIpConfiguration getStaticIpConfiguration(int netId) { 1700 WifiConfiguration config = mConfiguredNetworks.get(netId); 1701 if (config != null) { 1702 return config.getStaticIpConfiguration(); 1703 } 1704 return null; 1705 } 1706 1707 /** 1708 * Set the static IP configuration for a given network id 1709 */ 1710 void setStaticIpConfiguration(int netId, StaticIpConfiguration staticIpConfiguration) { 1711 WifiConfiguration config = mConfiguredNetworks.get(netId); 1712 if (config != null) { 1713 config.setStaticIpConfiguration(staticIpConfiguration); 1714 } 1715 } 1716 1717 /** 1718 * set default GW MAC address 1719 */ 1720 void setDefaultGwMacAddress(int netId, String macAddress) { 1721 WifiConfiguration config = mConfiguredNetworks.get(netId); 1722 if (config != null) { 1723 //update defaultGwMacAddress 1724 config.defaultGwMacAddress = macAddress; 1725 } 1726 } 1727 1728 1729 /** 1730 * Fetch the proxy properties for a given network id 1731 * @param netId id 1732 * @return ProxyInfo for the network id 1733 */ 1734 ProxyInfo getProxyProperties(int netId) { 1735 WifiConfiguration config = mConfiguredNetworks.get(netId); 1736 if (config != null) { 1737 return config.getHttpProxy(); 1738 } 1739 return null; 1740 } 1741 1742 /** 1743 * Return if the specified network is using static IP 1744 * @param netId id 1745 * @return {@code true} if using static ip for netId 1746 */ 1747 boolean isUsingStaticIp(int netId) { 1748 WifiConfiguration config = mConfiguredNetworks.get(netId); 1749 if (config != null && config.getIpAssignment() == IpAssignment.STATIC) { 1750 return true; 1751 } 1752 return false; 1753 } 1754 1755 boolean isEphemeral(int netId) { 1756 WifiConfiguration config = mConfiguredNetworks.get(netId); 1757 return config != null && config.ephemeral; 1758 } 1759 1760 /** 1761 * Should be called when a single network configuration is made. 1762 * @param network The network configuration that changed. 1763 * @param reason The reason for the change, should be one of WifiManager.CHANGE_REASON_ADDED, 1764 * WifiManager.CHANGE_REASON_REMOVED, or WifiManager.CHANGE_REASON_CHANGE. 1765 */ 1766 private void sendConfiguredNetworksChangedBroadcast(WifiConfiguration network, 1767 int reason) { 1768 Intent intent = new Intent(WifiManager.CONFIGURED_NETWORKS_CHANGED_ACTION); 1769 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1770 intent.putExtra(WifiManager.EXTRA_MULTIPLE_NETWORKS_CHANGED, false); 1771 intent.putExtra(WifiManager.EXTRA_WIFI_CONFIGURATION, network); 1772 intent.putExtra(WifiManager.EXTRA_CHANGE_REASON, reason); 1773 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1774 } 1775 1776 /** 1777 * Should be called when multiple network configuration changes are made. 1778 */ 1779 private void sendConfiguredNetworksChangedBroadcast() { 1780 Intent intent = new Intent(WifiManager.CONFIGURED_NETWORKS_CHANGED_ACTION); 1781 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1782 intent.putExtra(WifiManager.EXTRA_MULTIPLE_NETWORKS_CHANGED, true); 1783 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1784 } 1785 1786 void loadConfiguredNetworks() { 1787 1788 mLastPriority = 0; 1789 1790 mConfiguredNetworks.clear(); 1791 1792 int last_id = -1; 1793 boolean done = false; 1794 while (!done) { 1795 1796 String listStr = mWifiNative.listNetworks(last_id); 1797 if (listStr == null) 1798 return; 1799 1800 String[] lines = listStr.split("\n"); 1801 1802 if (showNetworks) { 1803 localLog("WifiConfigStore: loadConfiguredNetworks: "); 1804 for (String net : lines) { 1805 localLog(net); 1806 } 1807 } 1808 1809 // Skip the first line, which is a header 1810 for (int i = 1; i < lines.length; i++) { 1811 String[] result = lines[i].split("\t"); 1812 // network-id | ssid | bssid | flags 1813 WifiConfiguration config = new WifiConfiguration(); 1814 try { 1815 config.networkId = Integer.parseInt(result[0]); 1816 last_id = config.networkId; 1817 } catch(NumberFormatException e) { 1818 loge("Failed to read network-id '" + result[0] + "'"); 1819 continue; 1820 } 1821 if (result.length > 3) { 1822 if (result[3].indexOf("[CURRENT]") != -1) 1823 config.status = WifiConfiguration.Status.CURRENT; 1824 else if (result[3].indexOf("[DISABLED]") != -1) 1825 config.status = WifiConfiguration.Status.DISABLED; 1826 else 1827 config.status = WifiConfiguration.Status.ENABLED; 1828 } else { 1829 config.status = WifiConfiguration.Status.ENABLED; 1830 } 1831 1832 readNetworkVariables(config); 1833 1834 Checksum csum = new CRC32(); 1835 if (config.SSID != null) { 1836 csum.update(config.SSID.getBytes(), 0, config.SSID.getBytes().length); 1837 long d = csum.getValue(); 1838 if (mDeletedSSIDs.contains(d)) { 1839 loge(" got CRC for SSID " + config.SSID + " -> " + d + ", was deleted"); 1840 } 1841 } 1842 1843 if (config.priority > mLastPriority) { 1844 mLastPriority = config.priority; 1845 } 1846 1847 config.setIpAssignment(IpAssignment.DHCP); 1848 config.setProxySettings(ProxySettings.NONE); 1849 1850 if (mConfiguredNetworks.getByConfigKey(config.configKey()) != null) { 1851 // That SSID is already known, just ignore this duplicate entry 1852 if (showNetworks) localLog("discarded duplicate network ", config.networkId); 1853 } else if(WifiServiceImpl.isValid(config)){ 1854 mConfiguredNetworks.put(config.networkId, config); 1855 if (showNetworks) localLog("loaded configured network", config.networkId); 1856 } else { 1857 if (showNetworks) log("Ignoring loaded configured for network " + config.networkId 1858 + " because config are not valid"); 1859 } 1860 } 1861 1862 done = (lines.length == 1); 1863 } 1864 1865 readPasspointConfig(); 1866 readIpAndProxyConfigurations(); 1867 readNetworkHistory(); 1868 readAutoJoinConfig(); 1869 1870 buildPnoList(); 1871 1872 sendConfiguredNetworksChangedBroadcast(); 1873 1874 if (showNetworks) localLog("loadConfiguredNetworks loaded " + mConfiguredNetworks.size() + " networks"); 1875 1876 if (mConfiguredNetworks.isEmpty()) { 1877 // no networks? Lets log if the file contents 1878 logKernelTime(); 1879 logContents(SUPPLICANT_CONFIG_FILE); 1880 logContents(SUPPLICANT_CONFIG_FILE_BACKUP); 1881 logContents(networkHistoryConfigFile); 1882 } 1883 } 1884 1885 private void logContents(String file) { 1886 localLog("--- Begin " + file + " ---", true); 1887 BufferedReader reader = null; 1888 try { 1889 reader = new BufferedReader(new FileReader(file)); 1890 for (String line = reader.readLine(); line != null; line = reader.readLine()) { 1891 localLog(line, true); 1892 } 1893 } catch (FileNotFoundException e) { 1894 localLog("Could not open " + file + ", " + e, true); 1895 } catch (IOException e) { 1896 localLog("Could not read " + file + ", " + e, true); 1897 } finally { 1898 try { 1899 if (reader != null) { 1900 reader.close(); 1901 } 1902 } catch (IOException e) { 1903 // Just ignore the fact that we couldn't close 1904 } 1905 } 1906 localLog("--- End " + file + " Contents ---", true); 1907 } 1908 1909 private Map<String, String> readNetworkVariablesFromSupplicantFile(String key) { 1910 Map<String, String> result = new HashMap<>(); 1911 BufferedReader reader = null; 1912 if (VDBG) loge("readNetworkVariablesFromSupplicantFile key=" + key); 1913 1914 try { 1915 reader = new BufferedReader(new FileReader(SUPPLICANT_CONFIG_FILE)); 1916 boolean found = false; 1917 String networkSsid = null; 1918 String value = null; 1919 1920 for (String line = reader.readLine(); line != null; line = reader.readLine()) { 1921 1922 if (line.matches("[ \\t]*network=\\{")) { 1923 found = true; 1924 networkSsid = null; 1925 value = null; 1926 } else if (line.matches("[ \\t]*\\}")) { 1927 found = false; 1928 networkSsid = null; 1929 value = null; 1930 } 1931 1932 if (found) { 1933 String trimmedLine = line.trim(); 1934 if (trimmedLine.startsWith("ssid=")) { 1935 networkSsid = trimmedLine.substring(5); 1936 } else if (trimmedLine.startsWith(key + "=")) { 1937 value = trimmedLine.substring(key.length() + 1); 1938 } 1939 1940 if (networkSsid != null && value != null) { 1941 result.put(networkSsid, value); 1942 } 1943 } 1944 } 1945 } catch (FileNotFoundException e) { 1946 if (VDBG) loge("Could not open " + SUPPLICANT_CONFIG_FILE + ", " + e); 1947 } catch (IOException e) { 1948 if (VDBG) loge("Could not read " + SUPPLICANT_CONFIG_FILE + ", " + e); 1949 } finally { 1950 try { 1951 if (reader != null) { 1952 reader.close(); 1953 } 1954 } catch (IOException e) { 1955 // Just ignore the fact that we couldn't close 1956 } 1957 } 1958 1959 return result; 1960 } 1961 1962 private String readNetworkVariableFromSupplicantFile(String ssid, String key) { 1963 long start = SystemClock.elapsedRealtimeNanos(); 1964 Map<String, String> data = readNetworkVariablesFromSupplicantFile(key); 1965 long end = SystemClock.elapsedRealtimeNanos(); 1966 1967 if (VDBG) { 1968 loge("readNetworkVariableFromSupplicantFile ssid=[" + ssid + "] key=" + key 1969 + " duration=" + (long)(end - start)); 1970 } 1971 return data.get(ssid); 1972 } 1973 1974 /* Mark all networks except specified netId as disabled */ 1975 private void markAllNetworksDisabledExcept(int netId) { 1976 for(WifiConfiguration config : mConfiguredNetworks.values()) { 1977 if(config != null && config.networkId != netId) { 1978 if (config.status != Status.DISABLED) { 1979 config.status = Status.DISABLED; 1980 config.disableReason = WifiConfiguration.DISABLED_UNKNOWN_REASON; 1981 } 1982 } 1983 } 1984 } 1985 1986 private void markAllNetworksDisabled() { 1987 markAllNetworksDisabledExcept(INVALID_NETWORK_ID); 1988 } 1989 1990 boolean needsUnlockedKeyStore() { 1991 1992 // Any network using certificates to authenticate access requires 1993 // unlocked key store; unless the certificates can be stored with 1994 // hardware encryption 1995 1996 for(WifiConfiguration config : mConfiguredNetworks.values()) { 1997 1998 if (config.allowedKeyManagement.get(KeyMgmt.WPA_EAP) 1999 && config.allowedKeyManagement.get(KeyMgmt.IEEE8021X)) { 2000 2001 if (needsSoftwareBackedKeyStore(config.enterpriseConfig)) { 2002 return true; 2003 } 2004 } 2005 } 2006 2007 return false; 2008 } 2009 2010 void readPasspointConfig() { 2011 2012 List<HomeSP> homeSPs; 2013 try { 2014 homeSPs = mMOManager.loadAllSPs(); 2015 } catch (IOException e) { 2016 loge("Could not read " + PPS_FILE + " : " + e); 2017 return; 2018 } 2019 2020 mConfiguredNetworks.populatePasspointData(homeSPs, mWifiNative); 2021 } 2022 2023 public void writePasspointConfigs(final String fqdn, final HomeSP homeSP) { 2024 mWriter.write(PPS_FILE, new DelayedDiskWrite.Writer() { 2025 @Override 2026 public void onWriteCalled(DataOutputStream out) throws IOException { 2027 try { 2028 if (homeSP != null) { 2029 mMOManager.addSP(homeSP); 2030 } 2031 else { 2032 mMOManager.removeSP(fqdn); 2033 } 2034 } catch (IOException e) { 2035 loge("Could not write " + PPS_FILE + " : " + e); 2036 } 2037 } 2038 }, false); 2039 } 2040 2041 public void writeKnownNetworkHistory(boolean force) { 2042 boolean needUpdate = force; 2043 2044 /* Make a copy */ 2045 final List<WifiConfiguration> networks = new ArrayList<WifiConfiguration>(); 2046 for (WifiConfiguration config : mConfiguredNetworks.values()) { 2047 networks.add(new WifiConfiguration(config)); 2048 if (config.dirty == true) { 2049 loge(" rewrite network history for " + config.configKey()); 2050 config.dirty = false; 2051 needUpdate = true; 2052 } 2053 } 2054 if (VDBG) { 2055 loge(" writeKnownNetworkHistory() num networks:" + 2056 mConfiguredNetworks.size() + " needWrite=" + needUpdate); 2057 } 2058 if (needUpdate == false) { 2059 return; 2060 } 2061 mWriter.write(networkHistoryConfigFile, new DelayedDiskWrite.Writer() { 2062 public void onWriteCalled(DataOutputStream out) throws IOException { 2063 for (WifiConfiguration config : networks) { 2064 //loge("onWriteCalled write SSID: " + config.SSID); 2065 /* if (config.getLinkProperties() != null) 2066 loge(" lp " + config.getLinkProperties().toString()); 2067 else 2068 loge("attempt config w/o lp"); 2069 */ 2070 2071 if (VDBG) { 2072 int num = 0; 2073 int numlink = 0; 2074 if (config.connectChoices != null) { 2075 num = config.connectChoices.size(); 2076 } 2077 if (config.linkedConfigurations != null) { 2078 numlink = config.linkedConfigurations.size(); 2079 } 2080 loge("saving network history: " + config.configKey() + " gw: " + 2081 config.defaultGwMacAddress + " autojoin-status: " + 2082 config.autoJoinStatus + " ephemeral=" + config.ephemeral 2083 + " choices:" + Integer.toString(num) 2084 + " link:" + Integer.toString(numlink) 2085 + " status:" + Integer.toString(config.status) 2086 + " nid:" + Integer.toString(config.networkId)); 2087 } 2088 2089 if (!WifiServiceImpl.isValid(config)) 2090 continue; 2091 2092 if (config.SSID == null) { 2093 if (VDBG) { 2094 loge("writeKnownNetworkHistory trying to write config with null SSID"); 2095 } 2096 continue; 2097 } 2098 if (VDBG) { 2099 loge("writeKnownNetworkHistory write config " + config.configKey()); 2100 } 2101 out.writeUTF(CONFIG_KEY + SEPARATOR + config.configKey() + NL); 2102 2103 if (config.SSID != null) { 2104 out.writeUTF(SSID_KEY + SEPARATOR + config.SSID + NL); 2105 } 2106 if (config.FQDN != null) { 2107 out.writeUTF(FQDN_KEY + SEPARATOR + config.FQDN + NL); 2108 } 2109 2110 out.writeUTF(PRIORITY_KEY + SEPARATOR + 2111 Integer.toString(config.priority) + NL); 2112 out.writeUTF(STATUS_KEY + SEPARATOR + 2113 Integer.toString(config.autoJoinStatus) + NL); 2114 out.writeUTF(SUPPLICANT_STATUS_KEY + SEPARATOR + 2115 Integer.toString(config.status) + NL); 2116 out.writeUTF(SUPPLICANT_DISABLE_REASON_KEY + SEPARATOR + 2117 Integer.toString(config.disableReason) + NL); 2118 out.writeUTF(NETWORK_ID_KEY + SEPARATOR + 2119 Integer.toString(config.networkId) + NL); 2120 out.writeUTF(SELF_ADDED_KEY + SEPARATOR + 2121 Boolean.toString(config.selfAdded) + NL); 2122 out.writeUTF(DID_SELF_ADD_KEY + SEPARATOR + 2123 Boolean.toString(config.didSelfAdd) + NL); 2124 out.writeUTF(NO_INTERNET_ACCESS_REPORTS_KEY + SEPARATOR + 2125 Integer.toString(config.numNoInternetAccessReports) + NL); 2126 out.writeUTF(VALIDATED_INTERNET_ACCESS_KEY + SEPARATOR + 2127 Boolean.toString(config.validatedInternetAccess) + NL); 2128 out.writeUTF(EPHEMERAL_KEY + SEPARATOR + 2129 Boolean.toString(config.ephemeral) + NL); 2130 if (config.creationTime != null) { 2131 out.writeUTF(CREATION_TIME_KEY + SEPARATOR + config.creationTime + NL); 2132 } 2133 if (config.updateTime != null) { 2134 out.writeUTF(UPDATE_TIME_KEY + SEPARATOR + config.updateTime + NL); 2135 } 2136 if (config.peerWifiConfiguration != null) { 2137 out.writeUTF(PEER_CONFIGURATION_KEY + SEPARATOR + 2138 config.peerWifiConfiguration + NL); 2139 } 2140 out.writeUTF(NUM_CONNECTION_FAILURES_KEY + SEPARATOR + 2141 Integer.toString(config.numConnectionFailures) + NL); 2142 out.writeUTF(NUM_AUTH_FAILURES_KEY + SEPARATOR + 2143 Integer.toString(config.numAuthFailures) + NL); 2144 out.writeUTF(NUM_IP_CONFIG_FAILURES_KEY + SEPARATOR + 2145 Integer.toString(config.numIpConfigFailures) + NL); 2146 out.writeUTF(SCORER_OVERRIDE_KEY + SEPARATOR + 2147 Integer.toString(config.numScorerOverride) + NL); 2148 out.writeUTF(SCORER_OVERRIDE_AND_SWITCH_KEY + SEPARATOR + 2149 Integer.toString(config.numScorerOverrideAndSwitchedNetwork) + NL); 2150 out.writeUTF(NUM_ASSOCIATION_KEY + SEPARATOR + 2151 Integer.toString(config.numAssociation) + NL); 2152 out.writeUTF(JOIN_ATTEMPT_BOOST_KEY + SEPARATOR + 2153 Integer.toString(config.autoJoinUseAggressiveJoinAttemptThreshold)+ NL); 2154 //out.writeUTF(BLACKLIST_MILLI_KEY + SEPARATOR + 2155 // Long.toString(config.blackListTimestamp) + NL); 2156 out.writeUTF(CREATOR_UID_KEY + SEPARATOR + 2157 Integer.toString(config.creatorUid) + NL); 2158 out.writeUTF(CONNECT_UID_KEY + SEPARATOR + 2159 Integer.toString(config.lastConnectUid) + NL); 2160 out.writeUTF(UPDATE_UID_KEY + SEPARATOR + 2161 Integer.toString(config.lastUpdateUid) + NL); 2162 out.writeUTF(CREATOR_NAME_KEY + SEPARATOR + 2163 config.creatorName + NL); 2164 out.writeUTF(UPDATE_NAME_KEY + SEPARATOR + 2165 config.lastUpdateName + NL); 2166 out.writeUTF(USER_APPROVED_KEY + SEPARATOR + 2167 Integer.toString(config.userApproved) + NL); 2168 String allowedKeyManagementString = 2169 makeString(config.allowedKeyManagement, 2170 WifiConfiguration.KeyMgmt.strings); 2171 out.writeUTF(AUTH_KEY + SEPARATOR + 2172 allowedKeyManagementString + NL); 2173 2174 if (config.connectChoices != null) { 2175 for (String key : config.connectChoices.keySet()) { 2176 Integer choice = config.connectChoices.get(key); 2177 out.writeUTF(CHOICE_KEY + SEPARATOR + 2178 key + "=" + choice.toString() + NL); 2179 } 2180 } 2181 if (config.linkedConfigurations != null) { 2182 loge("writeKnownNetworkHistory write linked " 2183 + config.linkedConfigurations.size()); 2184 2185 for (String key : config.linkedConfigurations.keySet()) { 2186 out.writeUTF(LINK_KEY + SEPARATOR + key + NL); 2187 } 2188 } 2189 2190 String macAddress = config.defaultGwMacAddress; 2191 if (macAddress != null) { 2192 out.writeUTF(DEFAULT_GW_KEY + SEPARATOR + macAddress + NL); 2193 } 2194 2195 if (getScanDetailCache(config) != null) { 2196 for (ScanDetail scanDetail : getScanDetailCache(config).values()) { 2197 ScanResult result = scanDetail.getScanResult(); 2198 out.writeUTF(BSSID_KEY + SEPARATOR + 2199 result.BSSID + NL); 2200 2201 out.writeUTF(FREQ_KEY + SEPARATOR + 2202 Integer.toString(result.frequency) + NL); 2203 2204 out.writeUTF(RSSI_KEY + SEPARATOR + 2205 Integer.toString(result.level) + NL); 2206 2207 out.writeUTF(BSSID_STATUS_KEY + SEPARATOR + 2208 Integer.toString(result.autoJoinStatus) + NL); 2209 2210 //if (result.seen != 0) { 2211 // out.writeUTF(MILLI_KEY + SEPARATOR + Long.toString(result.seen) 2212 // + NL); 2213 //} 2214 out.writeUTF(BSSID_KEY_END + NL); 2215 } 2216 } 2217 if (config.lastFailure != null) { 2218 out.writeUTF(FAILURE_KEY + SEPARATOR + config.lastFailure + NL); 2219 } 2220 out.writeUTF(NL); 2221 // Add extra blank lines for clarity 2222 out.writeUTF(NL); 2223 out.writeUTF(NL); 2224 } 2225 if (mDeletedSSIDs != null && mDeletedSSIDs.size() > 0) { 2226 for (Long i : mDeletedSSIDs) { 2227 out.writeUTF(DELETED_CRC32_KEY); 2228 out.writeUTF(String.valueOf(i)); 2229 out.writeUTF(NL); 2230 } 2231 } 2232 if (mDeletedEphemeralSSIDs != null && mDeletedEphemeralSSIDs.size() > 0) { 2233 for (String ssid : mDeletedEphemeralSSIDs) { 2234 out.writeUTF(DELETED_EPHEMERAL_KEY); 2235 out.writeUTF(ssid); 2236 out.writeUTF(NL); 2237 } 2238 } 2239 } 2240 }); 2241 } 2242 2243 public void setLastSelectedConfiguration(int netId) { 2244 if (VDBG) { 2245 loge("setLastSelectedConfiguration " + Integer.toString(netId)); 2246 } 2247 if (netId == WifiConfiguration.INVALID_NETWORK_ID) { 2248 lastSelectedConfiguration = null; 2249 } else { 2250 WifiConfiguration selected = getWifiConfiguration(netId); 2251 if (selected == null) { 2252 lastSelectedConfiguration = null; 2253 } else { 2254 lastSelectedConfiguration = selected.configKey(); 2255 selected.numConnectionFailures = 0; 2256 selected.numIpConfigFailures = 0; 2257 selected.numAuthFailures = 0; 2258 selected.numNoInternetAccessReports = 0; 2259 if (VDBG) { 2260 loge("setLastSelectedConfiguration now: " + lastSelectedConfiguration); 2261 } 2262 } 2263 } 2264 } 2265 2266 public String getLastSelectedConfiguration() { 2267 return lastSelectedConfiguration; 2268 } 2269 2270 public boolean isLastSelectedConfiguration(WifiConfiguration config) { 2271 return (lastSelectedConfiguration != null 2272 && config != null 2273 && lastSelectedConfiguration.equals(config.configKey())); 2274 } 2275 2276 private void readNetworkHistory() { 2277 if (showNetworks) { 2278 localLog("readNetworkHistory() path:" + networkHistoryConfigFile); 2279 } 2280 2281 try (DataInputStream in = 2282 new DataInputStream(new BufferedInputStream( 2283 new FileInputStream(networkHistoryConfigFile)))) { 2284 2285 String bssid = null; 2286 String ssid = null; 2287 2288 int freq = 0; 2289 int status = 0; 2290 long seen = 0; 2291 int rssi = WifiConfiguration.INVALID_RSSI; 2292 String caps = null; 2293 2294 WifiConfiguration config = null; 2295 while (true) { 2296 String line = in.readUTF(); 2297 if (line == null) { 2298 break; 2299 } 2300 int colon = line.indexOf(':'); 2301 if (colon < 0) { 2302 continue; 2303 } 2304 2305 String key = line.substring(0, colon).trim(); 2306 String value = line.substring(colon + 1).trim(); 2307 2308 if (key.equals(CONFIG_KEY)) { 2309 2310 config = mConfiguredNetworks.getByConfigKey(value); 2311 2312 // skip reading that configuration data 2313 // since we don't have a corresponding network ID 2314 if (config == null) { 2315 localLog("readNetworkHistory didnt find netid for hash=" 2316 + Integer.toString(value.hashCode()) 2317 + " key: " + value); 2318 mLostConfigsDbg.add(value); 2319 continue; 2320 } else { 2321 // After an upgrade count old connections as owned by system 2322 if (config.creatorName == null || config.lastUpdateName == null) { 2323 config.creatorName = 2324 mContext.getPackageManager().getNameForUid(Process.SYSTEM_UID); 2325 config.lastUpdateName = config.creatorName; 2326 2327 if (DBG) Log.w(TAG, "Upgrading network " + config.networkId 2328 + " to " + config.creatorName); 2329 } 2330 } 2331 } else if (config != null) { 2332 switch (key) { 2333 case SSID_KEY: 2334 ssid = value; 2335 if (config.SSID != null && !config.SSID.equals(ssid)) { 2336 loge("Error parsing network history file, mismatched SSIDs"); 2337 config = null; //error 2338 ssid = null; 2339 } else { 2340 config.SSID = ssid; 2341 } 2342 break; 2343 case FQDN_KEY: 2344 // Check for literal 'null' to be backwards compatible. 2345 config.FQDN = value.equals("null") ? null : value; 2346 break; 2347 case DEFAULT_GW_KEY: 2348 config.defaultGwMacAddress = value; 2349 break; 2350 case STATUS_KEY: 2351 config.autoJoinStatus = Integer.parseInt(value); 2352 break; 2353 case SUPPLICANT_DISABLE_REASON_KEY: 2354 config.disableReason = Integer.parseInt(value); 2355 break; 2356 case SELF_ADDED_KEY: 2357 config.selfAdded = Boolean.parseBoolean(value); 2358 break; 2359 case DID_SELF_ADD_KEY: 2360 config.didSelfAdd = Boolean.parseBoolean(value); 2361 break; 2362 case NO_INTERNET_ACCESS_REPORTS_KEY: 2363 config.numNoInternetAccessReports = Integer.parseInt(value); 2364 break; 2365 case VALIDATED_INTERNET_ACCESS_KEY: 2366 config.validatedInternetAccess = Boolean.parseBoolean(value); 2367 break; 2368 case CREATION_TIME_KEY: 2369 config.creationTime = value; 2370 break; 2371 case UPDATE_TIME_KEY: 2372 config.updateTime = value; 2373 break; 2374 case EPHEMERAL_KEY: 2375 config.ephemeral = Boolean.parseBoolean(value); 2376 break; 2377 case CREATOR_UID_KEY: 2378 config.creatorUid = Integer.parseInt(value); 2379 break; 2380 case BLACKLIST_MILLI_KEY: 2381 config.blackListTimestamp = Long.parseLong(value); 2382 break; 2383 case NUM_CONNECTION_FAILURES_KEY: 2384 config.numConnectionFailures = Integer.parseInt(value); 2385 break; 2386 case NUM_IP_CONFIG_FAILURES_KEY: 2387 config.numIpConfigFailures = Integer.parseInt(value); 2388 break; 2389 case NUM_AUTH_FAILURES_KEY: 2390 config.numIpConfigFailures = Integer.parseInt(value); 2391 break; 2392 case SCORER_OVERRIDE_KEY: 2393 config.numScorerOverride = Integer.parseInt(value); 2394 break; 2395 case SCORER_OVERRIDE_AND_SWITCH_KEY: 2396 config.numScorerOverrideAndSwitchedNetwork = Integer.parseInt(value); 2397 break; 2398 case NUM_ASSOCIATION_KEY: 2399 config.numAssociation = Integer.parseInt(value); 2400 break; 2401 case JOIN_ATTEMPT_BOOST_KEY: 2402 config.autoJoinUseAggressiveJoinAttemptThreshold = 2403 Integer.parseInt(value); 2404 break; 2405 case CONNECT_UID_KEY: 2406 config.lastConnectUid = Integer.parseInt(value); 2407 break; 2408 case UPDATE_UID_KEY: 2409 config.lastUpdateUid = Integer.parseInt(value); 2410 break; 2411 case FAILURE_KEY: 2412 config.lastFailure = value; 2413 break; 2414 case PEER_CONFIGURATION_KEY: 2415 config.peerWifiConfiguration = value; 2416 break; 2417 case CHOICE_KEY: 2418 String configKey = ""; 2419 int choice = 0; 2420 Matcher match = mConnectChoice.matcher(value); 2421 if (!match.find()) { 2422 if (DBG) Log.d(TAG, "WifiConfigStore: connectChoice: " + 2423 " Couldnt match pattern : " + value); 2424 } else { 2425 configKey = match.group(1); 2426 try { 2427 choice = Integer.parseInt(match.group(2)); 2428 } catch (NumberFormatException e) { 2429 choice = 0; 2430 } 2431 if (choice > 0) { 2432 if (config.connectChoices == null) { 2433 config.connectChoices = new HashMap<>(); 2434 } 2435 config.connectChoices.put(configKey, choice); 2436 } 2437 } 2438 break; 2439 case LINK_KEY: 2440 if (config.linkedConfigurations == null) { 2441 config.linkedConfigurations = new HashMap<>(); 2442 } 2443 else { 2444 config.linkedConfigurations.put(value, -1); 2445 } 2446 break; 2447 case BSSID_KEY: 2448 status = 0; 2449 ssid = null; 2450 bssid = null; 2451 freq = 0; 2452 seen = 0; 2453 rssi = WifiConfiguration.INVALID_RSSI; 2454 caps = ""; 2455 break; 2456 case RSSI_KEY: 2457 rssi = Integer.parseInt(value); 2458 break; 2459 case BSSID_STATUS_KEY: 2460 status = Integer.parseInt(value); 2461 break; 2462 case FREQ_KEY: 2463 freq = Integer.parseInt(value); 2464 break; 2465 case DATE_KEY: 2466 /* 2467 * when reading the configuration from file we don't update the date 2468 * so as to avoid reading back stale or non-sensical data that would 2469 * depend on network time. 2470 * The date of a WifiConfiguration should only come from actual scan result. 2471 * 2472 String s = key.replace(FREQ_KEY, ""); 2473 seen = Integer.getInteger(s); 2474 */ 2475 break; 2476 case BSSID_KEY_END: 2477 if ((bssid != null) && (ssid != null)) { 2478 2479 if (getScanDetailCache(config) != null) { 2480 WifiSsid wssid = WifiSsid.createFromAsciiEncoded(ssid); 2481 ScanDetail scanDetail = new ScanDetail(wssid, bssid, 2482 caps, rssi, freq, (long) 0, seen); 2483 getScanDetailCache(config).put(scanDetail); 2484 scanDetail.getScanResult().autoJoinStatus = status; 2485 } 2486 } 2487 break; 2488 case DELETED_CRC32_KEY: 2489 mDeletedSSIDs.add(Long.parseLong(value)); 2490 break; 2491 case DELETED_EPHEMERAL_KEY: 2492 if (!TextUtils.isEmpty(value)) { 2493 mDeletedEphemeralSSIDs.add(value); 2494 } 2495 break; 2496 case CREATOR_NAME_KEY: 2497 config.creatorName = value; 2498 break; 2499 case UPDATE_NAME_KEY: 2500 config.lastUpdateName = value; 2501 break; 2502 case USER_APPROVED_KEY: 2503 config.userApproved = Integer.parseInt(value); 2504 break; 2505 } 2506 } 2507 } 2508 } catch (NumberFormatException e) { 2509 Log.e(TAG, "readNetworkHistory: failed to read, revert to default, " + e, e); 2510 } catch (EOFException e) { 2511 // do nothing 2512 } catch (IOException e) { 2513 Log.e(TAG, "readNetworkHistory: No config file, revert to default, " + e, e); 2514 } 2515 } 2516 2517 private void readAutoJoinConfig() { 2518 try (BufferedReader reader = new BufferedReader(new FileReader(autoJoinConfigFile))) { 2519 for (String key = reader.readLine(); key != null; key = reader.readLine()) { 2520 Log.d(TAG, "readAutoJoinConfig line: " + key); 2521 2522 int split = key.indexOf(':'); 2523 if (split < 0) { 2524 continue; 2525 } 2526 2527 String name = key.substring(0, split); 2528 Object reference = sKeyMap.get(name); 2529 if (reference == null) { 2530 continue; 2531 } 2532 2533 try { 2534 int value = Integer.parseInt(key.substring(split+1).trim()); 2535 if (reference.getClass() == AtomicBoolean.class) { 2536 ((AtomicBoolean)reference).set(value != 0); 2537 } 2538 else { 2539 ((AtomicInteger)reference).set(value); 2540 } 2541 Log.d(TAG,"readAutoJoinConfig: " + name + " = " + value); 2542 } 2543 catch (NumberFormatException nfe) { 2544 Log.d(TAG,"readAutoJoinConfig: incorrect format :" + key); 2545 } 2546 } 2547 } catch (IOException e) { 2548 loge("readAutoJoinStatus: Error parsing configuration" + e); 2549 } 2550 } 2551 2552 2553 private void writeIpAndProxyConfigurations() { 2554 final SparseArray<IpConfiguration> networks = new SparseArray<IpConfiguration>(); 2555 for(WifiConfiguration config : mConfiguredNetworks.values()) { 2556 if (!config.ephemeral && config.autoJoinStatus != WifiConfiguration.AUTO_JOIN_DELETED) { 2557 networks.put(configKey(config), config.getIpConfiguration()); 2558 } 2559 } 2560 2561 super.writeIpAndProxyConfigurations(ipConfigFile, networks); 2562 } 2563 2564 private void readIpAndProxyConfigurations() { 2565 SparseArray<IpConfiguration> networks = super.readIpAndProxyConfigurations(ipConfigFile); 2566 2567 if (networks == null || networks.size() == 0) { 2568 // IpConfigStore.readIpAndProxyConfigurations has already logged an error. 2569 return; 2570 } 2571 2572 for (int i = 0; i < networks.size(); i++) { 2573 int id = networks.keyAt(i); 2574 WifiConfiguration config = mConfiguredNetworks.getByConfigKeyID(id); 2575 // This is the only place the map is looked up through a (dangerous) hash-value! 2576 2577 if (config == null || config.autoJoinStatus == WifiConfiguration.AUTO_JOIN_DELETED || 2578 config.ephemeral) { 2579 loge("configuration found for missing network, nid=" + id 2580 +", ignored, networks.size=" + Integer.toString(networks.size())); 2581 } else { 2582 config.setIpConfiguration(networks.valueAt(i)); 2583 } 2584 } 2585 } 2586 2587 /* 2588 * Convert string to Hexadecimal before passing to wifi native layer 2589 * In native function "doCommand()" have trouble in converting Unicode character string to UTF8 2590 * conversion to hex is required because SSIDs can have space characters in them; 2591 * and that can confuses the supplicant because it uses space charaters as delimiters 2592 */ 2593 2594 public static String encodeSSID(String str){ 2595 return Utils.toHex(removeDoubleQuotes(str).getBytes(StandardCharsets.UTF_8)); 2596 } 2597 2598 private NetworkUpdateResult addOrUpdateNetworkNative(WifiConfiguration config, int uid) { 2599 /* 2600 * If the supplied networkId is INVALID_NETWORK_ID, we create a new empty 2601 * network configuration. Otherwise, the networkId should 2602 * refer to an existing configuration. 2603 */ 2604 2605 if (VDBG) localLog("addOrUpdateNetworkNative " + config.getPrintableSsid()); 2606 if (config.isPasspoint() && !mMOManager.isEnabled()) { 2607 Log.e(TAG, "Passpoint is not enabled"); 2608 return new NetworkUpdateResult(INVALID_NETWORK_ID); 2609 } 2610 2611 int netId = config.networkId; 2612 boolean newNetwork = false; 2613 // networkId of INVALID_NETWORK_ID means we want to create a new network 2614 if (netId == INVALID_NETWORK_ID) { 2615 WifiConfiguration savedConfig = mConfiguredNetworks.getByConfigKey(config.configKey()); 2616 if (savedConfig != null) { 2617 netId = savedConfig.networkId; 2618 } else { 2619 if (mMOManager.getHomeSP(config.FQDN) != null) { 2620 loge("addOrUpdateNetworkNative passpoint " + config.FQDN 2621 + " was found, but no network Id"); 2622 } 2623 newNetwork = true; 2624 netId = mWifiNative.addNetwork(); 2625 if (netId < 0) { 2626 loge("Failed to add a network!"); 2627 return new NetworkUpdateResult(INVALID_NETWORK_ID); 2628 } else { 2629 loge("addOrUpdateNetworkNative created netId=" + netId); 2630 } 2631 } 2632 } 2633 2634 boolean updateFailed = true; 2635 2636 setVariables: { 2637 2638 if (config.SSID != null && 2639 !mWifiNative.setNetworkVariable( 2640 netId, 2641 WifiConfiguration.ssidVarName, 2642 encodeSSID(config.SSID))) { 2643 loge("failed to set SSID: "+config.SSID); 2644 break setVariables; 2645 } 2646 2647 if (config.isPasspoint()) { 2648 if (!mWifiNative.setNetworkVariable( 2649 netId, 2650 idStringVarName, 2651 '"' + config.FQDN + '"')) { 2652 loge("failed to set id_str: " + config.FQDN); 2653 break setVariables; 2654 } 2655 } else { 2656 log("Config is : " + config); 2657 } 2658 2659 if (config.BSSID != null) { 2660 log("Setting BSSID for " + config.configKey() + " to " + config.BSSID); 2661 if (!mWifiNative.setNetworkVariable( 2662 netId, 2663 WifiConfiguration.bssidVarName, 2664 config.BSSID)) { 2665 loge("failed to set BSSID: " + config.BSSID); 2666 break setVariables; 2667 } 2668 } 2669 2670 String allowedKeyManagementString = 2671 makeString(config.allowedKeyManagement, WifiConfiguration.KeyMgmt.strings); 2672 if (config.allowedKeyManagement.cardinality() != 0 && 2673 !mWifiNative.setNetworkVariable( 2674 netId, 2675 WifiConfiguration.KeyMgmt.varName, 2676 allowedKeyManagementString)) { 2677 loge("failed to set key_mgmt: "+ 2678 allowedKeyManagementString); 2679 break setVariables; 2680 } 2681 2682 String allowedProtocolsString = 2683 makeString(config.allowedProtocols, WifiConfiguration.Protocol.strings); 2684 if (config.allowedProtocols.cardinality() != 0 && 2685 !mWifiNative.setNetworkVariable( 2686 netId, 2687 WifiConfiguration.Protocol.varName, 2688 allowedProtocolsString)) { 2689 loge("failed to set proto: "+ 2690 allowedProtocolsString); 2691 break setVariables; 2692 } 2693 2694 String allowedAuthAlgorithmsString = 2695 makeString(config.allowedAuthAlgorithms, WifiConfiguration.AuthAlgorithm.strings); 2696 if (config.allowedAuthAlgorithms.cardinality() != 0 && 2697 !mWifiNative.setNetworkVariable( 2698 netId, 2699 WifiConfiguration.AuthAlgorithm.varName, 2700 allowedAuthAlgorithmsString)) { 2701 loge("failed to set auth_alg: "+ 2702 allowedAuthAlgorithmsString); 2703 break setVariables; 2704 } 2705 2706 String allowedPairwiseCiphersString = 2707 makeString(config.allowedPairwiseCiphers, 2708 WifiConfiguration.PairwiseCipher.strings); 2709 if (config.allowedPairwiseCiphers.cardinality() != 0 && 2710 !mWifiNative.setNetworkVariable( 2711 netId, 2712 WifiConfiguration.PairwiseCipher.varName, 2713 allowedPairwiseCiphersString)) { 2714 loge("failed to set pairwise: "+ 2715 allowedPairwiseCiphersString); 2716 break setVariables; 2717 } 2718 2719 String allowedGroupCiphersString = 2720 makeString(config.allowedGroupCiphers, WifiConfiguration.GroupCipher.strings); 2721 if (config.allowedGroupCiphers.cardinality() != 0 && 2722 !mWifiNative.setNetworkVariable( 2723 netId, 2724 WifiConfiguration.GroupCipher.varName, 2725 allowedGroupCiphersString)) { 2726 loge("failed to set group: "+ 2727 allowedGroupCiphersString); 2728 break setVariables; 2729 } 2730 2731 // Prevent client screw-up by passing in a WifiConfiguration we gave it 2732 // by preventing "*" as a key. 2733 if (config.preSharedKey != null && !config.preSharedKey.equals("*") && 2734 !mWifiNative.setNetworkVariable( 2735 netId, 2736 WifiConfiguration.pskVarName, 2737 config.preSharedKey)) { 2738 loge("failed to set psk"); 2739 break setVariables; 2740 } 2741 2742 boolean hasSetKey = false; 2743 if (config.wepKeys != null) { 2744 for (int i = 0; i < config.wepKeys.length; i++) { 2745 // Prevent client screw-up by passing in a WifiConfiguration we gave it 2746 // by preventing "*" as a key. 2747 if (config.wepKeys[i] != null && !config.wepKeys[i].equals("*")) { 2748 if (!mWifiNative.setNetworkVariable( 2749 netId, 2750 WifiConfiguration.wepKeyVarNames[i], 2751 config.wepKeys[i])) { 2752 loge("failed to set wep_key" + i + ": " + config.wepKeys[i]); 2753 break setVariables; 2754 } 2755 hasSetKey = true; 2756 } 2757 } 2758 } 2759 2760 if (hasSetKey) { 2761 if (!mWifiNative.setNetworkVariable( 2762 netId, 2763 WifiConfiguration.wepTxKeyIdxVarName, 2764 Integer.toString(config.wepTxKeyIndex))) { 2765 loge("failed to set wep_tx_keyidx: " + config.wepTxKeyIndex); 2766 break setVariables; 2767 } 2768 } 2769 2770 if (!mWifiNative.setNetworkVariable( 2771 netId, 2772 WifiConfiguration.priorityVarName, 2773 Integer.toString(config.priority))) { 2774 loge(config.SSID + ": failed to set priority: " 2775 +config.priority); 2776 break setVariables; 2777 } 2778 2779 if (config.hiddenSSID && !mWifiNative.setNetworkVariable( 2780 netId, 2781 WifiConfiguration.hiddenSSIDVarName, 2782 Integer.toString(config.hiddenSSID ? 1 : 0))) { 2783 loge(config.SSID + ": failed to set hiddenSSID: "+ 2784 config.hiddenSSID); 2785 break setVariables; 2786 } 2787 2788 if (config.requirePMF && !mWifiNative.setNetworkVariable( 2789 netId, 2790 WifiConfiguration.pmfVarName, 2791 "2")) { 2792 loge(config.SSID + ": failed to set requirePMF: "+ 2793 config.requirePMF); 2794 break setVariables; 2795 } 2796 2797 if (config.updateIdentifier != null && !mWifiNative.setNetworkVariable( 2798 netId, 2799 WifiConfiguration.updateIdentiferVarName, 2800 config.updateIdentifier)) { 2801 loge(config.SSID + ": failed to set updateIdentifier: "+ 2802 config.updateIdentifier); 2803 break setVariables; 2804 } 2805 2806 if (config.enterpriseConfig != null && 2807 config.enterpriseConfig.getEapMethod() != WifiEnterpriseConfig.Eap.NONE) { 2808 2809 WifiEnterpriseConfig enterpriseConfig = config.enterpriseConfig; 2810 2811 if (needsKeyStore(enterpriseConfig)) { 2812 /** 2813 * Keyguard settings may eventually be controlled by device policy. 2814 * We check here if keystore is unlocked before installing 2815 * credentials. 2816 * TODO: Do we need a dialog here ? 2817 */ 2818 if (mKeyStore.state() != KeyStore.State.UNLOCKED) { 2819 loge(config.SSID + ": key store is locked"); 2820 break setVariables; 2821 } 2822 2823 try { 2824 /* config passed may include only fields being updated. 2825 * In order to generate the key id, fetch uninitialized 2826 * fields from the currently tracked configuration 2827 */ 2828 WifiConfiguration currentConfig = mConfiguredNetworks.get(netId); 2829 String keyId = config.getKeyIdForCredentials(currentConfig); 2830 2831 if (!installKeys(enterpriseConfig, keyId)) { 2832 loge(config.SSID + ": failed to install keys"); 2833 break setVariables; 2834 } 2835 } catch (IllegalStateException e) { 2836 loge(config.SSID + " invalid config for key installation"); 2837 break setVariables; 2838 } 2839 } 2840 2841 HashMap<String, String> enterpriseFields = enterpriseConfig.getFields(); 2842 for (String key : enterpriseFields.keySet()) { 2843 String value = enterpriseFields.get(key); 2844 if (key.equals("password") && value != null && value.equals("*")) { 2845 // No need to try to set an obfuscated password, which will fail 2846 continue; 2847 } 2848 if (key.equals(WifiEnterpriseConfig.REALM_KEY) 2849 || key.equals(WifiEnterpriseConfig.PLMN_KEY)) { 2850 // No need to save realm or PLMN in supplicant 2851 continue; 2852 } 2853 if (!mWifiNative.setNetworkVariable( 2854 netId, 2855 key, 2856 value)) { 2857 removeKeys(enterpriseConfig); 2858 loge(config.SSID + ": failed to set " + key + 2859 ": " + value); 2860 break setVariables; 2861 } 2862 } 2863 } 2864 updateFailed = false; 2865 } // End of setVariables 2866 2867 if (updateFailed) { 2868 if (newNetwork) { 2869 mWifiNative.removeNetwork(netId); 2870 loge("Failed to set a network variable, removed network: " + netId); 2871 } 2872 return new NetworkUpdateResult(INVALID_NETWORK_ID); 2873 } 2874 2875 /* An update of the network variables requires reading them 2876 * back from the supplicant to update mConfiguredNetworks. 2877 * This is because some of the variables (SSID, wep keys & 2878 * passphrases) reflect different values when read back than 2879 * when written. For example, wep key is stored as * irrespective 2880 * of the value sent to the supplicant 2881 */ 2882 WifiConfiguration currentConfig = mConfiguredNetworks.get(netId); 2883 if (currentConfig == null) { 2884 currentConfig = new WifiConfiguration(); 2885 currentConfig.setIpAssignment(IpAssignment.DHCP); 2886 currentConfig.setProxySettings(ProxySettings.NONE); 2887 currentConfig.networkId = netId; 2888 if (config != null) { 2889 // Carry over the creation parameters 2890 currentConfig.selfAdded = config.selfAdded; 2891 currentConfig.didSelfAdd = config.didSelfAdd; 2892 currentConfig.ephemeral = config.ephemeral; 2893 currentConfig.autoJoinUseAggressiveJoinAttemptThreshold 2894 = config.autoJoinUseAggressiveJoinAttemptThreshold; 2895 currentConfig.lastConnectUid = config.lastConnectUid; 2896 currentConfig.lastUpdateUid = config.lastUpdateUid; 2897 currentConfig.creatorUid = config.creatorUid; 2898 currentConfig.creatorName = config.creatorName; 2899 currentConfig.lastUpdateName = config.lastUpdateName; 2900 currentConfig.peerWifiConfiguration = config.peerWifiConfiguration; 2901 currentConfig.FQDN = config.FQDN; 2902 currentConfig.providerFriendlyName = config.providerFriendlyName; 2903 currentConfig.roamingConsortiumIds = config.roamingConsortiumIds; 2904 currentConfig.validatedInternetAccess = config.validatedInternetAccess; 2905 currentConfig.numNoInternetAccessReports = config.numNoInternetAccessReports; 2906 currentConfig.updateTime = config.updateTime; 2907 currentConfig.creationTime = config.creationTime; 2908 } 2909 if (DBG) { 2910 log("created new config netId=" + Integer.toString(netId) 2911 + " uid=" + Integer.toString(currentConfig.creatorUid) 2912 + " name=" + currentConfig.creatorName); 2913 } 2914 } 2915 2916 /* save HomeSP object for passpoint networks */ 2917 HomeSP homeSP = null; 2918 2919 if (config.isPasspoint()) { 2920 try { 2921 Credential credential = 2922 new Credential(config.enterpriseConfig, mKeyStore, !newNetwork); 2923 HashSet<Long> roamingConsortiumIds = new HashSet<Long>(); 2924 for (Long roamingConsortiumId : config.roamingConsortiumIds) { 2925 roamingConsortiumIds.add(roamingConsortiumId); 2926 } 2927 2928 homeSP = new HomeSP(Collections.<String, Long>emptyMap(), config.FQDN, 2929 roamingConsortiumIds, Collections.<String>emptySet(), 2930 Collections.<Long>emptySet(), Collections.<Long>emptyList(), 2931 config.providerFriendlyName, null, credential); 2932 2933 log("created a homeSP object for " + config.networkId + ":" + config.SSID); 2934 2935 /* fix enterprise config properties for passpoint */ 2936 currentConfig.enterpriseConfig.setRealm(config.enterpriseConfig.getRealm()); 2937 currentConfig.enterpriseConfig.setPlmn(config.enterpriseConfig.getPlmn()); 2938 } 2939 catch (IOException ioe) { 2940 Log.e(TAG, "Failed to create Passpoint config: " + ioe); 2941 return new NetworkUpdateResult(INVALID_NETWORK_ID); 2942 } 2943 } 2944 2945 if (uid != WifiConfiguration.UNKNOWN_UID) { 2946 if (newNetwork) { 2947 currentConfig.creatorUid = uid; 2948 } else { 2949 currentConfig.lastUpdateUid = uid; 2950 } 2951 } 2952 2953 // For debug, record the time the configuration was modified 2954 StringBuilder sb = new StringBuilder(); 2955 sb.append("time="); 2956 Calendar c = Calendar.getInstance(); 2957 c.setTimeInMillis(System.currentTimeMillis()); 2958 sb.append(String.format("%tm-%td %tH:%tM:%tS.%tL", c, c, c, c, c, c)); 2959 2960 if (newNetwork) { 2961 currentConfig.dirty = true; 2962 currentConfig.creationTime = sb.toString(); 2963 } else { 2964 currentConfig.updateTime = sb.toString(); 2965 } 2966 2967 if (currentConfig.autoJoinStatus == WifiConfiguration.AUTO_JOIN_DELETED) { 2968 // Make sure the configuration is not deleted anymore since we just 2969 // added or modified it. 2970 currentConfig.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 2971 currentConfig.selfAdded = false; 2972 currentConfig.didSelfAdd = false; 2973 if (DBG) { 2974 log("remove deleted status netId=" + Integer.toString(netId) 2975 + " " + currentConfig.configKey()); 2976 } 2977 } 2978 2979 if (currentConfig.status == WifiConfiguration.Status.ENABLED) { 2980 // Make sure autojoin remain in sync with user modifying the configuration 2981 currentConfig.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 2982 } 2983 2984 if (currentConfig.configKey().equals(getLastSelectedConfiguration()) && 2985 currentConfig.ephemeral) { 2986 // Make the config non-ephemeral since the user just explicitly clicked it. 2987 currentConfig.ephemeral = false; 2988 if (DBG) log("remove ephemeral status netId=" + Integer.toString(netId) 2989 + " " + currentConfig.configKey()); 2990 } 2991 2992 if (DBG) log("will read network variables netId=" + Integer.toString(netId)); 2993 2994 readNetworkVariables(currentConfig); 2995 2996 // Persist configuration paramaters that are not saved by supplicant. 2997 if (config.lastUpdateName != null) { 2998 currentConfig.lastUpdateName = config.lastUpdateName; 2999 } 3000 if (config.lastUpdateUid != WifiConfiguration.UNKNOWN_UID) { 3001 currentConfig.lastUpdateUid = config.lastUpdateUid; 3002 } 3003 3004 mConfiguredNetworks.put(netId, currentConfig); 3005 3006 NetworkUpdateResult result = writeIpAndProxyConfigurationsOnChange(currentConfig, config); 3007 result.setIsNewNetwork(newNetwork); 3008 result.setNetworkId(netId); 3009 3010 if (homeSP != null) { 3011 writePasspointConfigs(null, homeSP); 3012 } 3013 writeKnownNetworkHistory(false); 3014 3015 return result; 3016 } 3017 3018 public WifiConfiguration getWifiConfigForHomeSP(HomeSP homeSP) { 3019 WifiConfiguration config = mConfiguredNetworks.getByFQDN(homeSP.getFQDN()); 3020 if (config == null) { 3021 Log.e(TAG, "Could not find network for homeSP " + homeSP.getFQDN()); 3022 } 3023 return config; 3024 } 3025 3026 private HomeSP getHomeSPForConfig(WifiConfiguration config) { 3027 WifiConfiguration storedConfig = mConfiguredNetworks.get(config.networkId); 3028 return storedConfig != null && storedConfig.isPasspoint() ? 3029 mMOManager.getHomeSP(storedConfig.FQDN) : null; 3030 } 3031 3032 public ScanDetailCache getScanDetailCache(WifiConfiguration config) { 3033 if (config == null) return null; 3034 ScanDetailCache cache = mScanDetailCaches.get(config.networkId); 3035 if (cache == null && config.networkId != WifiConfiguration.INVALID_NETWORK_ID) { 3036 cache = new ScanDetailCache(config); 3037 mScanDetailCaches.put(config.networkId, cache); 3038 } 3039 return cache; 3040 } 3041 3042 /** 3043 * This function run thru the Saved WifiConfigurations and check if some should be linked. 3044 * @param config 3045 */ 3046 public void linkConfiguration(WifiConfiguration config) { 3047 3048 if (getScanDetailCache(config) != null && getScanDetailCache(config).size() > 6) { 3049 // Ignore configurations with large number of BSSIDs 3050 return; 3051 } 3052 if (!config.allowedKeyManagement.get(KeyMgmt.WPA_PSK)) { 3053 // Only link WPA_PSK config 3054 return; 3055 } 3056 for (WifiConfiguration link : mConfiguredNetworks.values()) { 3057 boolean doLink = false; 3058 3059 if (link.configKey().equals(config.configKey())) { 3060 continue; 3061 } 3062 3063 if (link.autoJoinStatus == WifiConfiguration.AUTO_JOIN_DELETED || link.ephemeral) { 3064 continue; 3065 } 3066 3067 // Autojoin will be allowed to dynamically jump from a linked configuration 3068 // to another, hence only link configurations that have equivalent level of security 3069 if (!link.allowedKeyManagement.equals(config.allowedKeyManagement)) { 3070 continue; 3071 } 3072 3073 ScanDetailCache linkedScanDetailCache = getScanDetailCache(link); 3074 if (linkedScanDetailCache != null && linkedScanDetailCache.size() > 6) { 3075 // Ignore configurations with large number of BSSIDs 3076 continue; 3077 } 3078 3079 if (config.defaultGwMacAddress != null && link.defaultGwMacAddress != null) { 3080 // If both default GW are known, link only if they are equal 3081 if (config.defaultGwMacAddress.equals(link.defaultGwMacAddress)) { 3082 if (VDBG) { 3083 loge("linkConfiguration link due to same gw " + link.SSID + 3084 " and " + config.SSID + " GW " + config.defaultGwMacAddress); 3085 } 3086 doLink = true; 3087 } 3088 } else { 3089 // We do not know BOTH default gateways hence we will try to link 3090 // hoping that WifiConfigurations are indeed behind the same gateway. 3091 // once both WifiConfiguration have been tried and thus once both efault gateways 3092 // are known we will revisit the choice of linking them 3093 if ((getScanDetailCache(config) != null) 3094 && (getScanDetailCache(config).size() <= 6)) { 3095 3096 for (String abssid : getScanDetailCache(config).keySet()) { 3097 for (String bbssid : linkedScanDetailCache.keySet()) { 3098 if (VVDBG) { 3099 loge("linkConfiguration try to link due to DBDC BSSID match " 3100 + link.SSID + 3101 " and " + config.SSID + " bssida " + abssid 3102 + " bssidb " + bbssid); 3103 } 3104 if (abssid.regionMatches(true, 0, bbssid, 0, 16)) { 3105 // If first 16 ascii characters of BSSID matches, 3106 // we assume this is a DBDC 3107 doLink = true; 3108 } 3109 } 3110 } 3111 } 3112 } 3113 3114 if (doLink == true && onlyLinkSameCredentialConfigurations) { 3115 String apsk = readNetworkVariableFromSupplicantFile(link.SSID, "psk"); 3116 String bpsk = readNetworkVariableFromSupplicantFile(config.SSID, "psk"); 3117 if (apsk == null || bpsk == null 3118 || TextUtils.isEmpty(apsk) || TextUtils.isEmpty(apsk) 3119 || apsk.equals("*") || apsk.equals(DELETED_CONFIG_PSK) 3120 || !apsk.equals(bpsk)) { 3121 doLink = false; 3122 } 3123 } 3124 3125 if (doLink) { 3126 if (VDBG) { 3127 loge("linkConfiguration: will link " + link.configKey() 3128 + " and " + config.configKey()); 3129 } 3130 if (link.linkedConfigurations == null) { 3131 link.linkedConfigurations = new HashMap<String, Integer>(); 3132 } 3133 if (config.linkedConfigurations == null) { 3134 config.linkedConfigurations = new HashMap<String, Integer>(); 3135 } 3136 if (link.linkedConfigurations.get(config.configKey()) == null) { 3137 link.linkedConfigurations.put(config.configKey(), Integer.valueOf(1)); 3138 link.dirty = true; 3139 } 3140 if (config.linkedConfigurations.get(link.configKey()) == null) { 3141 config.linkedConfigurations.put(link.configKey(), Integer.valueOf(1)); 3142 config.dirty = true; 3143 } 3144 } else { 3145 if (link.linkedConfigurations != null 3146 && (link.linkedConfigurations.get(config.configKey()) != null)) { 3147 if (VDBG) { 3148 loge("linkConfiguration: un-link " + config.configKey() 3149 + " from " + link.configKey()); 3150 } 3151 link.dirty = true; 3152 link.linkedConfigurations.remove(config.configKey()); 3153 } 3154 if (config.linkedConfigurations != null 3155 && (config.linkedConfigurations.get(link.configKey()) != null)) { 3156 if (VDBG) { 3157 loge("linkConfiguration: un-link " + link.configKey() 3158 + " from " + config.configKey()); 3159 } 3160 config.dirty = true; 3161 config.linkedConfigurations.remove(link.configKey()); 3162 } 3163 } 3164 } 3165 } 3166 3167 public HashSet<Integer> makeChannelList(WifiConfiguration config, int age, boolean restrict) { 3168 if (config == null) 3169 return null; 3170 long now_ms = System.currentTimeMillis(); 3171 3172 HashSet<Integer> channels = new HashSet<Integer>(); 3173 3174 //get channels for this configuration, if there are at least 2 BSSIDs 3175 if (getScanDetailCache(config) == null && config.linkedConfigurations == null) { 3176 return null; 3177 } 3178 3179 if (VDBG) { 3180 StringBuilder dbg = new StringBuilder(); 3181 dbg.append("makeChannelList age=" + Integer.toString(age) 3182 + " for " + config.configKey() 3183 + " max=" + maxNumActiveChannelsForPartialScans); 3184 if (getScanDetailCache(config) != null) { 3185 dbg.append(" bssids=" + getScanDetailCache(config).size()); 3186 } 3187 if (config.linkedConfigurations != null) { 3188 dbg.append(" linked=" + config.linkedConfigurations.size()); 3189 } 3190 loge(dbg.toString()); 3191 } 3192 3193 int numChannels = 0; 3194 if (getScanDetailCache(config) != null && getScanDetailCache(config).size() > 0) { 3195 for (ScanDetail scanDetail : getScanDetailCache(config).values()) { 3196 ScanResult result = scanDetail.getScanResult(); 3197 //TODO : cout active and passive channels separately 3198 if (numChannels > maxNumActiveChannelsForPartialScans.get()) { 3199 break; 3200 } 3201 if (VDBG) { 3202 boolean test = (now_ms - result.seen) < age; 3203 loge("has " + result.BSSID + " freq=" + Integer.toString(result.frequency) 3204 + " age=" + Long.toString(now_ms - result.seen) + " ?=" + test); 3205 } 3206 if (((now_ms - result.seen) < age)/*||(!restrict || result.is24GHz())*/) { 3207 channels.add(result.frequency); 3208 numChannels++; 3209 } 3210 } 3211 } 3212 3213 //get channels for linked configurations 3214 if (config.linkedConfigurations != null) { 3215 for (String key : config.linkedConfigurations.keySet()) { 3216 WifiConfiguration linked = getWifiConfiguration(key); 3217 if (linked == null) 3218 continue; 3219 if (getScanDetailCache(linked) == null) { 3220 continue; 3221 } 3222 for (ScanDetail scanDetail : getScanDetailCache(linked).values()) { 3223 ScanResult result = scanDetail.getScanResult(); 3224 if (VDBG) { 3225 loge("has link: " + result.BSSID 3226 + " freq=" + Integer.toString(result.frequency) 3227 + " age=" + Long.toString(now_ms - result.seen)); 3228 } 3229 if (numChannels > maxNumActiveChannelsForPartialScans.get()) { 3230 break; 3231 } 3232 if (((now_ms - result.seen) < age)/*||(!restrict || result.is24GHz())*/) { 3233 channels.add(result.frequency); 3234 numChannels++; 3235 } 3236 } 3237 } 3238 } 3239 return channels; 3240 } 3241 3242 private Map<HomeSP, PasspointMatch> matchPasspointNetworks(ScanDetail scanDetail) { 3243 if (!mMOManager.isConfigured()) { 3244 return null; 3245 } 3246 NetworkDetail networkDetail = scanDetail.getNetworkDetail(); 3247 if (!networkDetail.hasInterworking()) { 3248 return null; 3249 } 3250 updateAnqpCache(scanDetail, networkDetail.getANQPElements()); 3251 3252 Map<HomeSP, PasspointMatch> matches = matchNetwork(scanDetail, true); 3253 Log.d(Utils.hs2LogTag(getClass()), scanDetail.getSSID() + 3254 " pass 1 matches: " + toMatchString(matches)); 3255 return matches; 3256 } 3257 3258 private Map<HomeSP, PasspointMatch> matchNetwork(ScanDetail scanDetail, boolean query) { 3259 NetworkDetail networkDetail = scanDetail.getNetworkDetail(); 3260 3261 ANQPData anqpData = mAnqpCache.getEntry(networkDetail); 3262 3263 Map<Constants.ANQPElementType, ANQPElement> anqpElements = 3264 anqpData != null ? anqpData.getANQPElements() : null; 3265 3266 boolean queried = !query; 3267 Collection<HomeSP> homeSPs = mMOManager.getLoadedSPs().values(); 3268 Map<HomeSP, PasspointMatch> matches = new HashMap<>(homeSPs.size()); 3269 Log.d(Utils.hs2LogTag(getClass()), "match nwk " + scanDetail.toKeyString() + 3270 ", anqp " + ( anqpData != null ? "present" : "missing" ) + 3271 ", query " + query + ", home sps: " + homeSPs.size()); 3272 3273 for (HomeSP homeSP : homeSPs) { 3274 PasspointMatch match = homeSP.match(networkDetail, anqpElements, mSIMAccessor); 3275 3276 Log.d(Utils.hs2LogTag(getClass()), " -- " + 3277 homeSP.getFQDN() + ": match " + match + ", queried " + queried); 3278 3279 if (match == PasspointMatch.Incomplete && !queried) { 3280 if (mAnqpCache.initiate(networkDetail)) { 3281 mSupplicantBridge.startANQP(scanDetail); 3282 } 3283 queried = true; 3284 } 3285 matches.put(homeSP, match); 3286 } 3287 return matches; 3288 } 3289 3290 public void notifyANQPDone(Long bssid, boolean success) { 3291 mSupplicantBridge.notifyANQPDone(bssid, success); 3292 } 3293 3294 public void notifyANQPResponse(ScanDetail scanDetail, 3295 Map<Constants.ANQPElementType, ANQPElement> anqpElements) { 3296 3297 updateAnqpCache(scanDetail, anqpElements); 3298 if (anqpElements == null || anqpElements.isEmpty()) { 3299 return; 3300 } 3301 scanDetail.propagateANQPInfo(anqpElements); 3302 3303 Map<HomeSP, PasspointMatch> matches = matchNetwork(scanDetail, false); 3304 Log.d(Utils.hs2LogTag(getClass()), scanDetail.getSSID() + 3305 " pass 2 matches: " + toMatchString(matches)); 3306 3307 cacheScanResultForPasspointConfigs(scanDetail, matches); 3308 } 3309 3310 3311 private void updateAnqpCache(ScanDetail scanDetail, 3312 Map<Constants.ANQPElementType,ANQPElement> anqpElements) 3313 { 3314 NetworkDetail networkDetail = scanDetail.getNetworkDetail(); 3315 3316 if (anqpElements == null) { 3317 // Try to pull cached data if query failed. 3318 ANQPData data = mAnqpCache.getEntry(networkDetail); 3319 if (data != null) { 3320 scanDetail.propagateANQPInfo(data.getANQPElements()); 3321 } 3322 return; 3323 } 3324 3325 mAnqpCache.update(networkDetail, anqpElements); 3326 } 3327 3328 private static String toMatchString(Map<HomeSP, PasspointMatch> matches) { 3329 StringBuilder sb = new StringBuilder(); 3330 for (Map.Entry<HomeSP, PasspointMatch> entry : matches.entrySet()) { 3331 sb.append(' ').append(entry.getKey().getFQDN()).append("->").append(entry.getValue()); 3332 } 3333 return sb.toString(); 3334 } 3335 3336 private void cacheScanResultForPasspointConfigs(ScanDetail scanDetail, 3337 Map<HomeSP,PasspointMatch> matches) { 3338 3339 for (Map.Entry<HomeSP, PasspointMatch> entry : matches.entrySet()) { 3340 PasspointMatch match = entry.getValue(); 3341 if (match == PasspointMatch.HomeProvider || match == PasspointMatch.RoamingProvider) { 3342 WifiConfiguration config = getWifiConfigForHomeSP(entry.getKey()); 3343 if (config != null) { 3344 cacheScanResultForConfig(config, scanDetail, entry.getValue()); 3345 } else { 3346 Log.w(Utils.hs2LogTag(getClass()), "Failed to find config for '" + 3347 entry.getKey().getFQDN() + "'"); 3348 /* perhaps the configuration was deleted?? */ 3349 } 3350 } 3351 } 3352 } 3353 3354 private void cacheScanResultForConfig( 3355 WifiConfiguration config, ScanDetail scanDetail, PasspointMatch passpointMatch) { 3356 3357 ScanResult scanResult = scanDetail.getScanResult(); 3358 3359 if (config.autoJoinStatus >= WifiConfiguration.AUTO_JOIN_DELETED) { 3360 if (VVDBG) { 3361 loge("updateSavedNetworkHistory(): found a deleted, skip it... " 3362 + config.configKey()); 3363 } 3364 // The scan result belongs to a deleted config: 3365 // - increment numConfigFound to remember that we found a config 3366 // matching for this scan result 3367 // - dont do anything since the config was deleted, just skip... 3368 return; 3369 } 3370 3371 ScanDetailCache scanDetailCache = getScanDetailCache(config); 3372 if (scanDetailCache == null) { 3373 Log.w(TAG, "Could not allocate scan cache for " + config.SSID); 3374 return; 3375 } 3376 3377 // Adding a new BSSID 3378 ScanResult result = scanDetailCache.get(scanResult.BSSID); 3379 if (result != null) { 3380 // transfer the black list status 3381 scanResult.autoJoinStatus = result.autoJoinStatus; 3382 scanResult.blackListTimestamp = result.blackListTimestamp; 3383 scanResult.numIpConfigFailures = result.numIpConfigFailures; 3384 scanResult.numConnection = result.numConnection; 3385 scanResult.isAutoJoinCandidate = result.isAutoJoinCandidate; 3386 } 3387 3388 if (config.ephemeral) { 3389 // For an ephemeral Wi-Fi config, the ScanResult should be considered 3390 // untrusted. 3391 scanResult.untrusted = true; 3392 } 3393 3394 if (scanDetailCache.size() > (maxNumScanCacheEntries + 64)) { 3395 long now_dbg = 0; 3396 if (VVDBG) { 3397 loge(" Will trim config " + config.configKey() 3398 + " size " + scanDetailCache.size()); 3399 3400 for (ScanDetail sd : scanDetailCache.values()) { 3401 loge(" " + sd.getBSSIDString() + " " + sd.getSeen()); 3402 } 3403 now_dbg = SystemClock.elapsedRealtimeNanos(); 3404 } 3405 // Trim the scan result cache to maxNumScanCacheEntries entries max 3406 // Since this operation is expensive, make sure it is not performed 3407 // until the cache has grown significantly above the trim treshold 3408 scanDetailCache.trim(maxNumScanCacheEntries); 3409 if (VVDBG) { 3410 long diff = SystemClock.elapsedRealtimeNanos() - now_dbg; 3411 loge(" Finished trimming config, time(ns) " + diff); 3412 for (ScanDetail sd : scanDetailCache.values()) { 3413 loge(" " + sd.getBSSIDString() + " " + sd.getSeen()); 3414 } 3415 } 3416 } 3417 3418 // Add the scan result to this WifiConfiguration 3419 if (passpointMatch != null) 3420 scanDetailCache.put(scanDetail, passpointMatch, getHomeSPForConfig(config)); 3421 else 3422 scanDetailCache.put(scanDetail); 3423 3424 // Since we added a scan result to this configuration, re-attempt linking 3425 linkConfiguration(config); 3426 } 3427 3428 3429 // Update the WifiConfiguration database with the new scan result 3430 // A scan result can be associated to multiple WifiConfigurations 3431 public boolean updateSavedNetworkHistory(ScanDetail scanDetail) { 3432 3433 ScanResult scanResult = scanDetail.getScanResult(); 3434 NetworkDetail networkDetail = scanDetail.getNetworkDetail(); 3435 3436 int numConfigFound = 0; 3437 if (scanResult == null) 3438 return false; 3439 3440 String SSID = "\"" + scanResult.SSID + "\""; 3441 3442 if (networkDetail.hasInterworking()) { 3443 Map<HomeSP, PasspointMatch> matches = matchPasspointNetworks(scanDetail); 3444 if (matches != null) { 3445 cacheScanResultForPasspointConfigs(scanDetail, matches); 3446 return matches.size() != 0; 3447 } 3448 } 3449 3450 for (WifiConfiguration config : mConfiguredNetworks.values()) { 3451 boolean found = false; 3452 3453 if (config.SSID == null || !config.SSID.equals(SSID)) { 3454 // SSID mismatch 3455 if (VVDBG) { 3456 loge("updateSavedNetworkHistory(): SSID mismatch " + config.configKey() 3457 + " SSID=" + config.SSID + " " + SSID); 3458 } 3459 continue; 3460 } 3461 if (VDBG) { 3462 loge("updateSavedNetworkHistory(): try " + config.configKey() 3463 + " SSID=" + config.SSID + " " + scanResult.SSID 3464 + " " + scanResult.capabilities 3465 + " ajst=" + config.autoJoinStatus); 3466 } 3467 if (scanResult.capabilities.contains("WEP") 3468 && config.configKey().contains("WEP")) { 3469 found = true; 3470 } else if (scanResult.capabilities.contains("PSK") 3471 && config.configKey().contains("PSK")) { 3472 found = true; 3473 } else if (scanResult.capabilities.contains("EAP") 3474 && config.configKey().contains("EAP")) { 3475 found = true; 3476 } else if (!scanResult.capabilities.contains("WEP") 3477 && !scanResult.capabilities.contains("PSK") 3478 && !scanResult.capabilities.contains("EAP") 3479 && !config.configKey().contains("WEP") 3480 && !config.configKey().contains("PSK") 3481 && !config.configKey().contains("EAP")) { 3482 found = true; 3483 } 3484 3485 if (found) { 3486 numConfigFound ++; 3487 cacheScanResultForConfig(config, scanDetail, null); 3488 } 3489 3490 if (VDBG && found) { 3491 String status = ""; 3492 if (scanResult.autoJoinStatus > 0) { 3493 status = " status=" + Integer.toString(scanResult.autoJoinStatus); 3494 } 3495 loge(" got known scan result " + 3496 scanResult.BSSID + " key : " 3497 + config.configKey() + " num: " + 3498 Integer.toString(getScanDetailCache(config).size()) 3499 + " rssi=" + Integer.toString(scanResult.level) 3500 + " freq=" + Integer.toString(scanResult.frequency) 3501 + status); 3502 } 3503 } 3504 return numConfigFound != 0; 3505 } 3506 3507 /* Compare current and new configuration and write to file on change */ 3508 private NetworkUpdateResult writeIpAndProxyConfigurationsOnChange( 3509 WifiConfiguration currentConfig, 3510 WifiConfiguration newConfig) { 3511 boolean ipChanged = false; 3512 boolean proxyChanged = false; 3513 3514 if (VDBG) { 3515 loge("writeIpAndProxyConfigurationsOnChange: " + currentConfig.SSID + " -> " + 3516 newConfig.SSID + " path: " + ipConfigFile); 3517 } 3518 3519 3520 switch (newConfig.getIpAssignment()) { 3521 case STATIC: 3522 if (currentConfig.getIpAssignment() != newConfig.getIpAssignment()) { 3523 ipChanged = true; 3524 } else { 3525 ipChanged = !Objects.equals( 3526 currentConfig.getStaticIpConfiguration(), 3527 newConfig.getStaticIpConfiguration()); 3528 } 3529 break; 3530 case DHCP: 3531 if (currentConfig.getIpAssignment() != newConfig.getIpAssignment()) { 3532 ipChanged = true; 3533 } 3534 break; 3535 case UNASSIGNED: 3536 /* Ignore */ 3537 break; 3538 default: 3539 loge("Ignore invalid ip assignment during write"); 3540 break; 3541 } 3542 3543 switch (newConfig.getProxySettings()) { 3544 case STATIC: 3545 case PAC: 3546 ProxyInfo newHttpProxy = newConfig.getHttpProxy(); 3547 ProxyInfo currentHttpProxy = currentConfig.getHttpProxy(); 3548 3549 if (newHttpProxy != null) { 3550 proxyChanged = !newHttpProxy.equals(currentHttpProxy); 3551 } else { 3552 proxyChanged = (currentHttpProxy != null); 3553 } 3554 break; 3555 case NONE: 3556 if (currentConfig.getProxySettings() != newConfig.getProxySettings()) { 3557 proxyChanged = true; 3558 } 3559 break; 3560 case UNASSIGNED: 3561 /* Ignore */ 3562 break; 3563 default: 3564 loge("Ignore invalid proxy configuration during write"); 3565 break; 3566 } 3567 3568 if (ipChanged) { 3569 currentConfig.setIpAssignment(newConfig.getIpAssignment()); 3570 currentConfig.setStaticIpConfiguration(newConfig.getStaticIpConfiguration()); 3571 log("IP config changed SSID = " + currentConfig.SSID); 3572 if (currentConfig.getStaticIpConfiguration() != null) { 3573 log(" static configuration: " + 3574 currentConfig.getStaticIpConfiguration().toString()); 3575 } 3576 } 3577 3578 if (proxyChanged) { 3579 currentConfig.setProxySettings(newConfig.getProxySettings()); 3580 currentConfig.setHttpProxy(newConfig.getHttpProxy()); 3581 log("proxy changed SSID = " + currentConfig.SSID); 3582 if (currentConfig.getHttpProxy() != null) { 3583 log(" proxyProperties: " + currentConfig.getHttpProxy().toString()); 3584 } 3585 } 3586 3587 if (ipChanged || proxyChanged) { 3588 writeIpAndProxyConfigurations(); 3589 sendConfiguredNetworksChangedBroadcast(currentConfig, 3590 WifiManager.CHANGE_REASON_CONFIG_CHANGE); 3591 } 3592 return new NetworkUpdateResult(ipChanged, proxyChanged); 3593 } 3594 3595 /** Returns true if a particular config key needs to be quoted when passed to the supplicant. */ 3596 private boolean enterpriseConfigKeyShouldBeQuoted(String key) { 3597 switch (key) { 3598 case WifiEnterpriseConfig.EAP_KEY: 3599 case WifiEnterpriseConfig.ENGINE_KEY: 3600 return false; 3601 default: 3602 return true; 3603 } 3604 } 3605 3606 /** 3607 * Read the variables from the supplicant daemon that are needed to 3608 * fill in the WifiConfiguration object. 3609 * 3610 * @param config the {@link WifiConfiguration} object to be filled in. 3611 */ 3612 private void readNetworkVariables(WifiConfiguration config) { 3613 3614 int netId = config.networkId; 3615 if (netId < 0) 3616 return; 3617 3618 /* 3619 * TODO: maybe should have a native method that takes an array of 3620 * variable names and returns an array of values. But we'd still 3621 * be doing a round trip to the supplicant daemon for each variable. 3622 */ 3623 String value; 3624 3625 value = mWifiNative.getNetworkVariable(netId, WifiConfiguration.ssidVarName); 3626 if (!TextUtils.isEmpty(value)) { 3627 if (value.charAt(0) != '"') { 3628 config.SSID = "\"" + WifiSsid.createFromHex(value).toString() + "\""; 3629 //TODO: convert a hex string that is not UTF-8 decodable to a P-formatted 3630 //supplicant string 3631 } else { 3632 config.SSID = value; 3633 } 3634 } else { 3635 config.SSID = null; 3636 } 3637 3638 value = mWifiNative.getNetworkVariable(netId, WifiConfiguration.bssidVarName); 3639 if (!TextUtils.isEmpty(value)) { 3640 config.BSSID = value; 3641 } else { 3642 config.BSSID = null; 3643 } 3644 3645 value = mWifiNative.getNetworkVariable(netId, WifiConfiguration.priorityVarName); 3646 config.priority = -1; 3647 if (!TextUtils.isEmpty(value)) { 3648 try { 3649 config.priority = Integer.parseInt(value); 3650 } catch (NumberFormatException ignore) { 3651 } 3652 } 3653 3654 value = mWifiNative.getNetworkVariable(netId, WifiConfiguration.hiddenSSIDVarName); 3655 config.hiddenSSID = false; 3656 if (!TextUtils.isEmpty(value)) { 3657 try { 3658 config.hiddenSSID = Integer.parseInt(value) != 0; 3659 } catch (NumberFormatException ignore) { 3660 } 3661 } 3662 3663 value = mWifiNative.getNetworkVariable(netId, WifiConfiguration.wepTxKeyIdxVarName); 3664 config.wepTxKeyIndex = -1; 3665 if (!TextUtils.isEmpty(value)) { 3666 try { 3667 config.wepTxKeyIndex = Integer.parseInt(value); 3668 } catch (NumberFormatException ignore) { 3669 } 3670 } 3671 3672 for (int i = 0; i < 4; i++) { 3673 value = mWifiNative.getNetworkVariable(netId, 3674 WifiConfiguration.wepKeyVarNames[i]); 3675 if (!TextUtils.isEmpty(value)) { 3676 config.wepKeys[i] = value; 3677 } else { 3678 config.wepKeys[i] = null; 3679 } 3680 } 3681 3682 value = mWifiNative.getNetworkVariable(netId, WifiConfiguration.pskVarName); 3683 if (!TextUtils.isEmpty(value)) { 3684 config.preSharedKey = value; 3685 } else { 3686 config.preSharedKey = null; 3687 } 3688 3689 readNetworkBitsetVariable(config.networkId, config.allowedProtocols, 3690 WifiConfiguration.Protocol.varName, WifiConfiguration.Protocol.strings); 3691 3692 readNetworkBitsetVariable(config.networkId, config.allowedKeyManagement, 3693 WifiConfiguration.KeyMgmt.varName, WifiConfiguration.KeyMgmt.strings); 3694 3695 readNetworkBitsetVariable(config.networkId, config.allowedAuthAlgorithms, 3696 WifiConfiguration.AuthAlgorithm.varName, WifiConfiguration.AuthAlgorithm.strings); 3697 3698 readNetworkBitsetVariable(config.networkId, config.allowedPairwiseCiphers, 3699 WifiConfiguration.PairwiseCipher.varName, WifiConfiguration.PairwiseCipher.strings); 3700 3701 readNetworkBitsetVariable(config.networkId, config.allowedGroupCiphers, 3702 WifiConfiguration.GroupCipher.varName, WifiConfiguration.GroupCipher.strings); 3703 3704 if (config.enterpriseConfig == null) { 3705 config.enterpriseConfig = new WifiEnterpriseConfig(); 3706 } 3707 HashMap<String, String> enterpriseFields = config.enterpriseConfig.getFields(); 3708 for (String key : ENTERPRISE_CONFIG_SUPPLICANT_KEYS) { 3709 value = mWifiNative.getNetworkVariable(netId, key); 3710 if (!TextUtils.isEmpty(value)) { 3711 if (!enterpriseConfigKeyShouldBeQuoted(key)) { 3712 value = removeDoubleQuotes(value); 3713 } 3714 enterpriseFields.put(key, value); 3715 } else { 3716 enterpriseFields.put(key, EMPTY_VALUE); 3717 } 3718 } 3719 3720 if (migrateOldEapTlsNative(config.enterpriseConfig, netId)) { 3721 saveConfig(); 3722 } 3723 3724 migrateCerts(config.enterpriseConfig); 3725 // initializeSoftwareKeystoreFlag(config.enterpriseConfig, mKeyStore); 3726 } 3727 3728 private static String removeDoubleQuotes(String string) { 3729 int length = string.length(); 3730 if ((length > 1) && (string.charAt(0) == '"') 3731 && (string.charAt(length - 1) == '"')) { 3732 return string.substring(1, length - 1); 3733 } 3734 return string; 3735 } 3736 3737 private static String makeString(BitSet set, String[] strings) { 3738 StringBuffer buf = new StringBuffer(); 3739 int nextSetBit = -1; 3740 3741 /* Make sure all set bits are in [0, strings.length) to avoid 3742 * going out of bounds on strings. (Shouldn't happen, but...) */ 3743 set = set.get(0, strings.length); 3744 3745 while ((nextSetBit = set.nextSetBit(nextSetBit + 1)) != -1) { 3746 buf.append(strings[nextSetBit].replace('_', '-')).append(' '); 3747 } 3748 3749 // remove trailing space 3750 if (set.cardinality() > 0) { 3751 buf.setLength(buf.length() - 1); 3752 } 3753 3754 return buf.toString(); 3755 } 3756 3757 private int lookupString(String string, String[] strings) { 3758 int size = strings.length; 3759 3760 string = string.replace('-', '_'); 3761 3762 for (int i = 0; i < size; i++) 3763 if (string.equals(strings[i])) 3764 return i; 3765 3766 // if we ever get here, we should probably add the 3767 // value to WifiConfiguration to reflect that it's 3768 // supported by the WPA supplicant 3769 loge("Failed to look-up a string: " + string); 3770 3771 return -1; 3772 } 3773 3774 /* return the allowed key management based on a scan result */ 3775 3776 public WifiConfiguration wifiConfigurationFromScanResult(ScanDetail scanDetail) { 3777 3778 ScanResult result = scanDetail.getScanResult(); 3779 WifiConfiguration config = new WifiConfiguration(); 3780 3781 config.SSID = "\"" + result.SSID + "\""; 3782 3783 if (VDBG) { 3784 loge("WifiConfiguration from scan results " + 3785 config.SSID + " cap " + result.capabilities); 3786 } 3787 if (result.capabilities.contains("WEP")) { 3788 config.allowedKeyManagement.set(KeyMgmt.NONE); 3789 config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN); //? 3790 config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.SHARED); 3791 } 3792 3793 if (result.capabilities.contains("PSK")) { 3794 config.allowedKeyManagement.set(KeyMgmt.WPA_PSK); 3795 } 3796 3797 if (result.capabilities.contains("EAP")) { 3798 //this is probably wrong, as we don't have a way to enter the enterprise config 3799 config.allowedKeyManagement.set(KeyMgmt.WPA_EAP); 3800 config.allowedKeyManagement.set(KeyMgmt.IEEE8021X); 3801 } 3802 3803 /* getScanDetailCache(config).put(scanDetail); */ 3804 3805 return config; 3806 } 3807 3808 3809 /* Returns a unique for a given configuration */ 3810 private static int configKey(WifiConfiguration config) { 3811 String key = config.configKey(); 3812 return key.hashCode(); 3813 } 3814 3815 void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 3816 pw.println("Dump of WifiConfigStore"); 3817 pw.println("mLastPriority " + mLastPriority); 3818 pw.println("Configured networks"); 3819 for (WifiConfiguration conf : getAllConfiguredNetworks()) { 3820 pw.println(conf); 3821 } 3822 pw.println(); 3823 if (mLostConfigsDbg != null && mLostConfigsDbg.size() > 0) { 3824 pw.println("LostConfigs: "); 3825 for (String s : mLostConfigsDbg) { 3826 pw.println(s); 3827 } 3828 } 3829 if (mLocalLog != null) { 3830 pw.println("WifiConfigStore - Log Begin ----"); 3831 mLocalLog.dump(fd, pw, args); 3832 pw.println("WifiConfigStore - Log End ----"); 3833 } 3834 } 3835 3836 public String getConfigFile() { 3837 return ipConfigFile; 3838 } 3839 3840 protected void loge(String s) { 3841 loge(s, false); 3842 } 3843 3844 protected void loge(String s, boolean stack) { 3845 if (stack) { 3846 Log.e(TAG, s + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3847 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3848 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3849 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3850 } else { 3851 Log.e(TAG, s); 3852 } 3853 } 3854 3855 private void logKernelTime() { 3856 long kernelTimeMs = System.nanoTime()/(1000*1000); 3857 StringBuilder builder = new StringBuilder(); 3858 builder.append("kernel time = ").append(kernelTimeMs/1000).append(".").append 3859 (kernelTimeMs%1000).append("\n"); 3860 localLog(builder.toString()); 3861 } 3862 3863 protected void log(String s) { 3864 Log.d(TAG, s); 3865 } 3866 3867 private void localLog(String s) { 3868 if (mLocalLog != null) { 3869 mLocalLog.log(s); 3870 } 3871 } 3872 3873 private void localLog(String s, boolean force) { 3874 localLog(s); 3875 if (force) loge(s); 3876 } 3877 3878 private void localLog(String s, int netId) { 3879 if (mLocalLog == null) { 3880 return; 3881 } 3882 3883 WifiConfiguration config; 3884 synchronized(mConfiguredNetworks) { // !!! Useless synchronization 3885 config = mConfiguredNetworks.get(netId); 3886 } 3887 3888 if (config != null) { 3889 mLocalLog.log(s + " " + config.getPrintableSsid() + " " + netId 3890 + " status=" + config.status 3891 + " key=" + config.configKey()); 3892 } else { 3893 mLocalLog.log(s + " " + netId); 3894 } 3895 } 3896 3897 // Certificate and private key management for EnterpriseConfig 3898 static boolean needsKeyStore(WifiEnterpriseConfig config) { 3899 // Has no keys to be installed 3900 if (config.getClientCertificate() == null && config.getCaCertificate() == null) 3901 return false; 3902 return true; 3903 } 3904 3905 static boolean isHardwareBackedKey(PrivateKey key) { 3906 return KeyChain.isBoundKeyAlgorithm(key.getAlgorithm()); 3907 } 3908 3909 static boolean hasHardwareBackedKey(Certificate certificate) { 3910 return KeyChain.isBoundKeyAlgorithm(certificate.getPublicKey().getAlgorithm()); 3911 } 3912 3913 static boolean needsSoftwareBackedKeyStore(WifiEnterpriseConfig config) { 3914 String client = config.getClientCertificateAlias(); 3915 if (!TextUtils.isEmpty(client)) { 3916 // a valid client certificate is configured 3917 3918 // BUGBUG: keyStore.get() never returns certBytes; because it is not 3919 // taking WIFI_UID as a parameter. It always looks for certificate 3920 // with SYSTEM_UID, and never finds any Wifi certificates. Assuming that 3921 // all certificates need software keystore until we get the get() API 3922 // fixed. 3923 3924 return true; 3925 } 3926 3927 /* 3928 try { 3929 3930 if (DBG) Slog.d(TAG, "Loading client certificate " + Credentials 3931 .USER_CERTIFICATE + client); 3932 3933 CertificateFactory factory = CertificateFactory.getInstance("X.509"); 3934 if (factory == null) { 3935 Slog.e(TAG, "Error getting certificate factory"); 3936 return; 3937 } 3938 3939 byte[] certBytes = keyStore.get(Credentials.USER_CERTIFICATE + client); 3940 if (certBytes != null) { 3941 Certificate cert = (X509Certificate) factory.generateCertificate( 3942 new ByteArrayInputStream(certBytes)); 3943 3944 if (cert != null) { 3945 mNeedsSoftwareKeystore = hasHardwareBackedKey(cert); 3946 3947 if (DBG) Slog.d(TAG, "Loaded client certificate " + Credentials 3948 .USER_CERTIFICATE + client); 3949 if (DBG) Slog.d(TAG, "It " + (mNeedsSoftwareKeystore ? "needs" : 3950 "does not need" ) + " software key store"); 3951 } else { 3952 Slog.d(TAG, "could not generate certificate"); 3953 } 3954 } else { 3955 Slog.e(TAG, "Could not load client certificate " + Credentials 3956 .USER_CERTIFICATE + client); 3957 mNeedsSoftwareKeystore = true; 3958 } 3959 3960 } catch(CertificateException e) { 3961 Slog.e(TAG, "Could not read certificates"); 3962 mCaCert = null; 3963 mClientCertificate = null; 3964 } 3965 */ 3966 3967 return false; 3968 } 3969 3970 boolean isNetworkConfigured(WifiConfiguration config) { 3971 // Check if either we have a network Id or a WifiConfiguration 3972 // matching the one we are trying to add. 3973 3974 if(config.networkId != INVALID_NETWORK_ID) { 3975 return (mConfiguredNetworks.get(config.networkId) != null); 3976 } 3977 3978 return (mConfiguredNetworks.getByConfigKey(config.configKey()) != null); 3979 } 3980 3981 /** 3982 * Checks if uid has access to modify the configuration corresponding to networkId. 3983 * 3984 * Factors involved in modifiability of a config are as follows. 3985 * If uid is a Device Owner app then it has full control over the device, including WiFi 3986 * configs. 3987 * If the modification is only for administrative annotation (e.g. when connecting) or the 3988 * config is not lockdown eligible (currently that means any config not last updated by the DO) 3989 * then the creator of config or an app holding OVERRIDE_CONFIG_WIFI can modify the config. 3990 * If the config is lockdown eligible and the modification is substantial (not annotation) 3991 * then the requirement to be able to modify the config by the uid is as follows: 3992 * a) the uid has to hold OVERRIDE_CONFIG_WIFI and 3993 * b) the lockdown feature should be disabled. 3994 */ 3995 boolean canModifyNetwork(int uid, int networkId, boolean onlyAnnotate) { 3996 WifiConfiguration config = mConfiguredNetworks.get(networkId); 3997 3998 if (config == null) { 3999 loge("canModifyNetwork: cannot find config networkId " + networkId); 4000 return false; 4001 } 4002 4003 final DevicePolicyManagerInternal dpmi = LocalServices.getService( 4004 DevicePolicyManagerInternal.class); 4005 4006 final boolean isUidDeviceOwner = dpmi != null && dpmi.isActiveAdminWithPolicy(uid, 4007 DeviceAdminInfo.USES_POLICY_DEVICE_OWNER); 4008 4009 if (isUidDeviceOwner) { 4010 // Device Owner has full control over the device, including WiFi Configs 4011 return true; 4012 } 4013 4014 final boolean isCreator = (config.creatorUid == uid); 4015 4016 if (onlyAnnotate) { 4017 return isCreator || checkConfigOverridePermission(uid); 4018 } 4019 4020 // Check if device has DPM capability. If it has and dpmi is still null, then we 4021 // treat this case with suspicion and bail out. 4022 if (mContext.getPackageManager().hasSystemFeature(PackageManager.FEATURE_DEVICE_ADMIN) 4023 && dpmi == null) { 4024 return false; 4025 } 4026 4027 // WiFi config lockdown related logic. At this point we know uid NOT to be a Device Owner. 4028 4029 final boolean isConfigEligibleForLockdown = dpmi != null && dpmi.isActiveAdminWithPolicy( 4030 config.creatorUid, DeviceAdminInfo.USES_POLICY_DEVICE_OWNER); 4031 if (!isConfigEligibleForLockdown) { 4032 return isCreator || checkConfigOverridePermission(uid); 4033 } 4034 4035 final ContentResolver resolver = mContext.getContentResolver(); 4036 final boolean isLockdownFeatureEnabled = Settings.Global.getInt(resolver, 4037 Settings.Global.WIFI_DEVICE_OWNER_CONFIGS_LOCKDOWN, 0) != 0; 4038 return !isLockdownFeatureEnabled && checkConfigOverridePermission(uid); 4039 } 4040 4041 /** 4042 * Checks if uid has access to modify config. 4043 */ 4044 boolean canModifyNetwork(int uid, WifiConfiguration config, boolean onlyAnnotate) { 4045 if (config == null) { 4046 loge("canModifyNetowrk recieved null configuration"); 4047 return false; 4048 } 4049 4050 // Resolve the correct network id. 4051 int netid; 4052 if (config.networkId != INVALID_NETWORK_ID){ 4053 netid = config.networkId; 4054 } else { 4055 WifiConfiguration test = mConfiguredNetworks.getByConfigKey(config.configKey()); 4056 if (test == null) { 4057 return false; 4058 } else { 4059 netid = test.networkId; 4060 } 4061 } 4062 4063 return canModifyNetwork(uid, netid, onlyAnnotate); 4064 } 4065 4066 boolean checkConfigOverridePermission(int uid) { 4067 try { 4068 return (AppGlobals.getPackageManager().checkUidPermission( 4069 android.Manifest.permission.OVERRIDE_WIFI_CONFIG, uid) 4070 == PackageManager.PERMISSION_GRANTED); 4071 } catch (RemoteException e) { 4072 return false; 4073 } 4074 } 4075 4076 /** called when CS ask WiFistateMachine to disconnect the current network 4077 * because the score is bad. 4078 */ 4079 void handleBadNetworkDisconnectReport(int netId, WifiInfo info) { 4080 /* TODO verify the bad network is current */ 4081 WifiConfiguration config = mConfiguredNetworks.get(netId); 4082 if (config != null) { 4083 if ((info.getRssi() < WifiConfiguration.UNWANTED_BLACKLIST_SOFT_RSSI_24 4084 && info.is24GHz()) || (info.getRssi() < 4085 WifiConfiguration.UNWANTED_BLACKLIST_SOFT_RSSI_5 && info.is5GHz())) { 4086 // We got disconnected and RSSI was bad, so disable light 4087 config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_TEMPORARY_DISABLED 4088 + WifiConfiguration.UNWANTED_BLACKLIST_SOFT_BUMP); 4089 loge("handleBadNetworkDisconnectReport (+4) " 4090 + Integer.toString(netId) + " " + info); 4091 } else { 4092 // We got disabled but RSSI is good, so disable hard 4093 config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_TEMPORARY_DISABLED 4094 + WifiConfiguration.UNWANTED_BLACKLIST_HARD_BUMP); 4095 loge("handleBadNetworkDisconnectReport (+8) " 4096 + Integer.toString(netId) + " " + info); 4097 } 4098 } 4099 // Record last time Connectivity Service switched us away from WiFi and onto Cell 4100 lastUnwantedNetworkDisconnectTimestamp = System.currentTimeMillis(); 4101 } 4102 4103 boolean handleBSSIDBlackList(int netId, String BSSID, boolean enable) { 4104 boolean found = false; 4105 if (BSSID == null) 4106 return found; 4107 4108 // Look for the BSSID in our config store 4109 for (WifiConfiguration config : mConfiguredNetworks.values()) { 4110 if (getScanDetailCache(config) != null) { 4111 for (ScanDetail scanDetail : getScanDetailCache(config).values()) { 4112 if (scanDetail.getBSSIDString().equals(BSSID)) { 4113 if (enable) { 4114 scanDetail.getScanResult().setAutoJoinStatus(ScanResult.ENABLED); 4115 } else { 4116 // Black list the BSSID we were trying to join 4117 // so as the Roam state machine 4118 // doesn't pick it up over and over 4119 scanDetail.getScanResult().setAutoJoinStatus( 4120 ScanResult.AUTO_ROAM_DISABLED); 4121 found = true; 4122 } 4123 } 4124 } 4125 } 4126 } 4127 return found; 4128 } 4129 4130 int getMaxDhcpRetries() { 4131 return Settings.Global.getInt(mContext.getContentResolver(), 4132 Settings.Global.WIFI_MAX_DHCP_RETRY_COUNT, 4133 DEFAULT_MAX_DHCP_RETRIES); 4134 } 4135 4136 void clearBssidBlacklist() { 4137 mBssidBlacklist = new HashSet<String>(); 4138 mWifiNative.clearBlacklist(); 4139 mWifiNative.setBssidBlacklist(null); 4140 } 4141 4142 void blackListBssid(String BSSID) { 4143 if (BSSID == null) 4144 return; 4145 mBssidBlacklist.add(BSSID); 4146 // Blacklist at wpa_supplicant 4147 mWifiNative.addToBlacklist(BSSID); 4148 // Blacklist at firmware 4149 String list[] = new String[mBssidBlacklist.size()]; 4150 int count = 0; 4151 for (String bssid : mBssidBlacklist) { 4152 list[count++] = bssid; 4153 } 4154 mWifiNative.setBssidBlacklist(list); 4155 } 4156 4157 void handleSSIDStateChange(int netId, boolean enabled, String message, String BSSID) { 4158 WifiConfiguration config = mConfiguredNetworks.get(netId); 4159 if (config != null) { 4160 if (enabled) { 4161 loge("SSID re-enabled for " + config.configKey() + 4162 " had autoJoinStatus=" + Integer.toString(config.autoJoinStatus) 4163 + " self added " + config.selfAdded + " ephemeral " + config.ephemeral); 4164 //TODO: http://b/16381983 Fix Wifi Network Blacklisting 4165 //TODO: really I don't know if re-enabling is right but we 4166 //TODO: should err on the side of trying to connect 4167 //TODO: even if the attempt will fail 4168 if (config.autoJoinStatus == WifiConfiguration.AUTO_JOIN_DISABLED_ON_AUTH_FAILURE) { 4169 config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 4170 } 4171 } else { 4172 loge("SSID temp disabled for " + config.configKey() + 4173 " had autoJoinStatus=" + Integer.toString(config.autoJoinStatus) 4174 + " self added " + config.selfAdded + " ephemeral " + config.ephemeral); 4175 if (message != null) { 4176 loge(" message=" + message); 4177 } 4178 if (config.selfAdded && config.lastConnected == 0) { 4179 // This is a network we self added, and we never succeeded, 4180 // the user did not create this network and never entered its credentials, 4181 // so we want to be very aggressive in disabling it completely. 4182 removeConfigAndSendBroadcastIfNeeded(config.networkId); 4183 } else { 4184 if (message != null) { 4185 if (message.contains("no identity")) { 4186 config.setAutoJoinStatus( 4187 WifiConfiguration.AUTO_JOIN_DISABLED_NO_CREDENTIALS); 4188 if (DBG) { 4189 loge("no identity blacklisted " + config.configKey() + " to " 4190 + Integer.toString(config.autoJoinStatus)); 4191 } 4192 } else if (message.contains("WRONG_KEY") 4193 || message.contains("AUTH_FAILED")) { 4194 // This configuration has received an auth failure, so disable it 4195 // temporarily because we don't want auto-join to try it out. 4196 // this network may be re-enabled by the "usual" 4197 // enableAllNetwork function 4198 config.numAuthFailures++; 4199 if (config.numAuthFailures > maxAuthErrorsToBlacklist) { 4200 config.setAutoJoinStatus 4201 (WifiConfiguration.AUTO_JOIN_DISABLED_ON_AUTH_FAILURE); 4202 disableNetwork(netId, 4203 WifiConfiguration.DISABLED_AUTH_FAILURE); 4204 loge("Authentication failure, blacklist " + config.configKey() + " " 4205 + Integer.toString(config.networkId) 4206 + " num failures " + config.numAuthFailures); 4207 } 4208 } else if (message.contains("DHCP FAILURE")) { 4209 config.numIpConfigFailures++; 4210 config.lastConnectionFailure = System.currentTimeMillis(); 4211 int maxRetries = getMaxDhcpRetries(); 4212 // maxRetries == 0 means keep trying forever 4213 if (maxRetries > 0 && config.numIpConfigFailures > maxRetries) { 4214 /** 4215 * If we've exceeded the maximum number of retries for DHCP 4216 * to a given network, disable the network 4217 */ 4218 config.setAutoJoinStatus 4219 (WifiConfiguration.AUTO_JOIN_DISABLED_ON_AUTH_FAILURE); 4220 disableNetwork(netId, WifiConfiguration.DISABLED_DHCP_FAILURE); 4221 loge("DHCP failure, blacklist " + config.configKey() + " " 4222 + Integer.toString(config.networkId) 4223 + " num failures " + config.numIpConfigFailures); 4224 } 4225 4226 // Also blacklist the BSSId if we find it 4227 ScanResult result = null; 4228 String bssidDbg = ""; 4229 if (getScanDetailCache(config) != null && BSSID != null) { 4230 result = getScanDetailCache(config).get(BSSID); 4231 } 4232 if (result != null) { 4233 result.numIpConfigFailures ++; 4234 bssidDbg = BSSID + " ipfail=" + result.numIpConfigFailures; 4235 if (result.numIpConfigFailures > 3) { 4236 // Tell supplicant to stop trying this BSSID 4237 mWifiNative.addToBlacklist(BSSID); 4238 result.setAutoJoinStatus(ScanResult.AUTO_JOIN_DISABLED); 4239 } 4240 } 4241 4242 if (DBG) { 4243 loge("blacklisted " + config.configKey() + " to " 4244 + config.autoJoinStatus 4245 + " due to IP config failures, count=" 4246 + config.numIpConfigFailures 4247 + " disableReason=" + config.disableReason 4248 + " " + bssidDbg); 4249 } 4250 } else if (message.contains("CONN_FAILED")) { 4251 config.numConnectionFailures++; 4252 if (config.numConnectionFailures > maxConnectionErrorsToBlacklist) { 4253 config.setAutoJoinStatus 4254 (WifiConfiguration.AUTO_JOIN_DISABLED_ON_AUTH_FAILURE); 4255 disableNetwork(netId, 4256 WifiConfiguration.DISABLED_ASSOCIATION_REJECT); 4257 loge("Connection failure, blacklist " + config.configKey() + " " 4258 + config.networkId 4259 + " num failures " + config.numConnectionFailures); 4260 } 4261 } 4262 message.replace("\n", ""); 4263 message.replace("\r", ""); 4264 config.lastFailure = message; 4265 } 4266 } 4267 } 4268 } 4269 } 4270 4271 boolean installKeys(WifiEnterpriseConfig config, String name) { 4272 boolean ret = true; 4273 String privKeyName = Credentials.USER_PRIVATE_KEY + name; 4274 String userCertName = Credentials.USER_CERTIFICATE + name; 4275 String caCertName = Credentials.CA_CERTIFICATE + name; 4276 if (config.getClientCertificate() != null) { 4277 byte[] privKeyData = config.getClientPrivateKey().getEncoded(); 4278 if (isHardwareBackedKey(config.getClientPrivateKey())) { 4279 // Hardware backed key store is secure enough to store keys un-encrypted, this 4280 // removes the need for user to punch a PIN to get access to these keys 4281 if (DBG) Log.d(TAG, "importing keys " + name + " in hardware backed store"); 4282 ret = mKeyStore.importKey(privKeyName, privKeyData, android.os.Process.WIFI_UID, 4283 KeyStore.FLAG_NONE); 4284 } else { 4285 // Software backed key store is NOT secure enough to store keys un-encrypted. 4286 // Save keys encrypted so they are protected with user's PIN. User will 4287 // have to unlock phone before being able to use these keys and connect to 4288 // networks. 4289 if (DBG) Log.d(TAG, "importing keys " + name + " in software backed store"); 4290 ret = mKeyStore.importKey(privKeyName, privKeyData, Process.WIFI_UID, 4291 KeyStore.FLAG_ENCRYPTED); 4292 } 4293 if (ret == false) { 4294 return ret; 4295 } 4296 4297 ret = putCertInKeyStore(userCertName, config.getClientCertificate()); 4298 if (ret == false) { 4299 // Remove private key installed 4300 mKeyStore.delete(privKeyName, Process.WIFI_UID); 4301 return ret; 4302 } 4303 } 4304 4305 if (config.getCaCertificate() != null) { 4306 ret = putCertInKeyStore(caCertName, config.getCaCertificate()); 4307 if (ret == false) { 4308 if (config.getClientCertificate() != null) { 4309 // Remove client key+cert 4310 mKeyStore.delete(privKeyName, Process.WIFI_UID); 4311 mKeyStore.delete(userCertName, Process.WIFI_UID); 4312 } 4313 return ret; 4314 } 4315 } 4316 4317 // Set alias names 4318 if (config.getClientCertificate() != null) { 4319 config.setClientCertificateAlias(name); 4320 config.resetClientKeyEntry(); 4321 } 4322 4323 if (config.getCaCertificate() != null) { 4324 config.setCaCertificateAlias(name); 4325 config.resetCaCertificate(); 4326 } 4327 4328 return ret; 4329 } 4330 4331 private boolean putCertInKeyStore(String name, Certificate cert) { 4332 try { 4333 byte[] certData = Credentials.convertToPem(cert); 4334 if (DBG) Log.d(TAG, "putting certificate " + name + " in keystore"); 4335 return mKeyStore.put(name, certData, Process.WIFI_UID, KeyStore.FLAG_NONE); 4336 4337 } catch (IOException e1) { 4338 return false; 4339 } catch (CertificateException e2) { 4340 return false; 4341 } 4342 } 4343 4344 void removeKeys(WifiEnterpriseConfig config) { 4345 String client = config.getClientCertificateAlias(); 4346 // a valid client certificate is configured 4347 if (!TextUtils.isEmpty(client)) { 4348 if (DBG) Log.d(TAG, "removing client private key and user cert"); 4349 mKeyStore.delete(Credentials.USER_PRIVATE_KEY + client, Process.WIFI_UID); 4350 mKeyStore.delete(Credentials.USER_CERTIFICATE + client, Process.WIFI_UID); 4351 } 4352 4353 String ca = config.getCaCertificateAlias(); 4354 // a valid ca certificate is configured 4355 if (!TextUtils.isEmpty(ca)) { 4356 if (DBG) Log.d(TAG, "removing CA cert"); 4357 mKeyStore.delete(Credentials.CA_CERTIFICATE + ca, Process.WIFI_UID); 4358 } 4359 } 4360 4361 4362 /** Migrates the old style TLS config to the new config style. This should only be used 4363 * when restoring an old wpa_supplicant.conf or upgrading from a previous 4364 * platform version. 4365 * @return true if the config was updated 4366 * @hide 4367 */ 4368 boolean migrateOldEapTlsNative(WifiEnterpriseConfig config, int netId) { 4369 String oldPrivateKey = mWifiNative.getNetworkVariable(netId, OLD_PRIVATE_KEY_NAME); 4370 /* 4371 * If the old configuration value is not present, then there is nothing 4372 * to do. 4373 */ 4374 if (TextUtils.isEmpty(oldPrivateKey)) { 4375 return false; 4376 } else { 4377 // Also ignore it if it's empty quotes. 4378 oldPrivateKey = removeDoubleQuotes(oldPrivateKey); 4379 if (TextUtils.isEmpty(oldPrivateKey)) { 4380 return false; 4381 } 4382 } 4383 4384 config.setFieldValue(WifiEnterpriseConfig.ENGINE_KEY, WifiEnterpriseConfig.ENGINE_ENABLE); 4385 config.setFieldValue(WifiEnterpriseConfig.ENGINE_ID_KEY, 4386 WifiEnterpriseConfig.ENGINE_ID_KEYSTORE); 4387 4388 /* 4389 * The old key started with the keystore:// URI prefix, but we don't 4390 * need that anymore. Trim it off if it exists. 4391 */ 4392 final String keyName; 4393 if (oldPrivateKey.startsWith(WifiEnterpriseConfig.KEYSTORE_URI)) { 4394 keyName = new String( 4395 oldPrivateKey.substring(WifiEnterpriseConfig.KEYSTORE_URI.length())); 4396 } else { 4397 keyName = oldPrivateKey; 4398 } 4399 config.setFieldValue(WifiEnterpriseConfig.PRIVATE_KEY_ID_KEY, keyName); 4400 4401 mWifiNative.setNetworkVariable(netId, WifiEnterpriseConfig.ENGINE_KEY, 4402 config.getFieldValue(WifiEnterpriseConfig.ENGINE_KEY, "")); 4403 4404 mWifiNative.setNetworkVariable(netId, WifiEnterpriseConfig.ENGINE_ID_KEY, 4405 config.getFieldValue(WifiEnterpriseConfig.ENGINE_ID_KEY, "")); 4406 4407 mWifiNative.setNetworkVariable(netId, WifiEnterpriseConfig.PRIVATE_KEY_ID_KEY, 4408 config.getFieldValue(WifiEnterpriseConfig.PRIVATE_KEY_ID_KEY, "")); 4409 4410 // Remove old private_key string so we don't run this again. 4411 mWifiNative.setNetworkVariable(netId, OLD_PRIVATE_KEY_NAME, EMPTY_VALUE); 4412 4413 return true; 4414 } 4415 4416 /** Migrate certs from global pool to wifi UID if not already done */ 4417 void migrateCerts(WifiEnterpriseConfig config) { 4418 String client = config.getClientCertificateAlias(); 4419 // a valid client certificate is configured 4420 if (!TextUtils.isEmpty(client)) { 4421 if (!mKeyStore.contains(Credentials.USER_PRIVATE_KEY + client, Process.WIFI_UID)) { 4422 mKeyStore.duplicate(Credentials.USER_PRIVATE_KEY + client, -1, 4423 Credentials.USER_PRIVATE_KEY + client, Process.WIFI_UID); 4424 mKeyStore.duplicate(Credentials.USER_CERTIFICATE + client, -1, 4425 Credentials.USER_CERTIFICATE + client, Process.WIFI_UID); 4426 } 4427 } 4428 4429 String ca = config.getCaCertificateAlias(); 4430 // a valid ca certificate is configured 4431 if (!TextUtils.isEmpty(ca)) { 4432 if (!mKeyStore.contains(Credentials.CA_CERTIFICATE + ca, Process.WIFI_UID)) { 4433 mKeyStore.duplicate(Credentials.CA_CERTIFICATE + ca, -1, 4434 Credentials.CA_CERTIFICATE + ca, Process.WIFI_UID); 4435 } 4436 } 4437 } 4438 4439 private void readNetworkBitsetVariable(int netId, BitSet variable, String varName, 4440 String[] strings) { 4441 String value = mWifiNative.getNetworkVariable(netId, varName); 4442 if (!TextUtils.isEmpty(value)) { 4443 variable.clear(); 4444 String vals[] = value.split(" "); 4445 for (String val : vals) { 4446 int index = lookupString(val, strings); 4447 if (0 <= index) { 4448 variable.set(index); 4449 } 4450 } 4451 } 4452 } 4453} 4454