WifiConfigManager.java revision a6b66a48b231f5729b8015d3446feb4c2fa0a9d1
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 static android.net.wifi.WifiConfiguration.INVALID_NETWORK_ID; 20 21import android.app.admin.DeviceAdminInfo; 22import android.app.admin.DevicePolicyManagerInternal; 23import android.content.ContentResolver; 24import android.content.Context; 25import android.content.Intent; 26import android.content.pm.ApplicationInfo; 27import android.content.pm.PackageManager; 28import android.content.pm.UserInfo; 29import android.net.IpConfiguration; 30import android.net.IpConfiguration.IpAssignment; 31import android.net.IpConfiguration.ProxySettings; 32import android.net.NetworkInfo.DetailedState; 33import android.net.ProxyInfo; 34import android.net.StaticIpConfiguration; 35import android.net.wifi.PasspointManagementObjectDefinition; 36import android.net.wifi.ScanResult; 37import android.net.wifi.WifiConfiguration; 38import android.net.wifi.WifiConfiguration.KeyMgmt; 39import android.net.wifi.WifiConfiguration.Status; 40import android.net.wifi.WifiEnterpriseConfig; 41import android.net.wifi.WifiInfo; 42import android.net.wifi.WifiManager; 43import android.net.wifi.WifiScanner; 44import android.net.wifi.WpsInfo; 45import android.net.wifi.WpsResult; 46import android.os.Environment; 47import android.os.RemoteException; 48import android.os.SystemClock; 49import android.os.UserHandle; 50import android.os.UserManager; 51import android.provider.Settings; 52import android.security.KeyStore; 53import android.text.TextUtils; 54import android.util.LocalLog; 55import android.util.Log; 56import android.util.SparseArray; 57 58import com.android.internal.R; 59import com.android.server.LocalServices; 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.ANQPFactory; 64import com.android.server.wifi.anqp.Constants; 65import com.android.server.wifi.hotspot2.ANQPData; 66import com.android.server.wifi.hotspot2.AnqpCache; 67import com.android.server.wifi.hotspot2.IconEvent; 68import com.android.server.wifi.hotspot2.NetworkDetail; 69import com.android.server.wifi.hotspot2.PasspointMatch; 70import com.android.server.wifi.hotspot2.SupplicantBridge; 71import com.android.server.wifi.hotspot2.Utils; 72import com.android.server.wifi.hotspot2.omadm.PasspointManagementObjectManager; 73import com.android.server.wifi.hotspot2.pps.Credential; 74import com.android.server.wifi.hotspot2.pps.HomeSP; 75 76import org.xml.sax.SAXException; 77 78import java.io.BufferedReader; 79import java.io.DataOutputStream; 80import java.io.File; 81import java.io.FileDescriptor; 82import java.io.FileNotFoundException; 83import java.io.FileReader; 84import java.io.IOException; 85import java.io.PrintWriter; 86import java.security.cert.X509Certificate; 87import java.text.DateFormat; 88import java.util.ArrayList; 89import java.util.BitSet; 90import java.util.Calendar; 91import java.util.Collection; 92import java.util.Collections; 93import java.util.Comparator; 94import java.util.Date; 95import java.util.HashMap; 96import java.util.HashSet; 97import java.util.List; 98import java.util.Map; 99import java.util.Objects; 100import java.util.Set; 101import java.util.concurrent.ConcurrentHashMap; 102import java.util.concurrent.atomic.AtomicBoolean; 103import java.util.concurrent.atomic.AtomicInteger; 104import java.util.zip.CRC32; 105import java.util.zip.Checksum; 106 107 108/** 109 * This class provides the API to manage configured 110 * wifi networks. The API is not thread safe is being 111 * used only from WifiStateMachine. 112 * 113 * It deals with the following 114 * - Add/update/remove a WifiConfiguration 115 * The configuration contains two types of information. 116 * = IP and proxy configuration that is handled by WifiConfigManager and 117 * is saved to disk on any change. 118 * 119 * The format of configuration file is as follows: 120 * <version> 121 * <netA_key1><netA_value1><netA_key2><netA_value2>...<EOS> 122 * <netB_key1><netB_value1><netB_key2><netB_value2>...<EOS> 123 * .. 124 * 125 * (key, value) pairs for a given network are grouped together and can 126 * be in any order. A EOS at the end of a set of (key, value) pairs 127 * indicates that the next set of (key, value) pairs are for a new 128 * network. A network is identified by a unique ID_KEY. If there is no 129 * ID_KEY in the (key, value) pairs, the data is discarded. 130 * 131 * An invalid version on read would result in discarding the contents of 132 * the file. On the next write, the latest version is written to file. 133 * 134 * Any failures during read or write to the configuration file are ignored 135 * without reporting to the user since the likelihood of these errors are 136 * low and the impact on connectivity is low. 137 * 138 * = SSID & security details that is pushed to the supplicant. 139 * supplicant saves these details to the disk on calling 140 * saveConfigCommand(). 141 * 142 * We have two kinds of APIs exposed: 143 * > public API calls that provide fine grained control 144 * - enableNetwork, disableNetwork, addOrUpdateNetwork(), 145 * removeNetwork(). For these calls, the config is not persisted 146 * to the disk. (TODO: deprecate these calls in WifiManager) 147 * > The new API calls - selectNetwork(), saveNetwork() & forgetNetwork(). 148 * These calls persist the supplicant config to disk. 149 * 150 * - Maintain a list of configured networks for quick access 151 * 152 */ 153public class WifiConfigManager { 154 private static boolean sVDBG = false; 155 private static boolean sVVDBG = false; 156 public static final String TAG = "WifiConfigManager"; 157 public static final int MAX_TX_PACKET_FOR_FULL_SCANS = 8; 158 public static final int MAX_RX_PACKET_FOR_FULL_SCANS = 16; 159 public static final int MAX_TX_PACKET_FOR_PARTIAL_SCANS = 40; 160 public static final int MAX_RX_PACKET_FOR_PARTIAL_SCANS = 80; 161 public static final boolean ROAM_ON_ANY = false; 162 public static final int MAX_NUM_SCAN_CACHE_ENTRIES = 128; 163 private static final boolean DBG = true; 164 private static final String PPS_FILE = "/data/misc/wifi/PerProviderSubscription.conf"; 165 private static final String IP_CONFIG_FILE = 166 Environment.getDataDirectory() + "/misc/wifi/ipconfig.txt"; 167 168 // The Wifi verbose log is provided as a way to persist the verbose logging settings 169 // for testing purpose. 170 // It is not intended for normal use. 171 private static final String WIFI_VERBOSE_LOGS_KEY = "WIFI_VERBOSE_LOGS"; 172 173 // As we keep deleted PSK WifiConfiguration for a while, the PSK of 174 // those deleted WifiConfiguration is set to this random unused PSK 175 private static final String DELETED_CONFIG_PSK = "Mjkd86jEMGn79KhKll298Uu7-deleted"; 176 177 /** 178 * The maximum number of times we will retry a connection to an access point 179 * for which we have failed in acquiring an IP address from DHCP. A value of 180 * N means that we will make N+1 connection attempts in all. 181 * <p> 182 * See {@link Settings.Secure#WIFI_MAX_DHCP_RETRY_COUNT}. This is the default 183 * value if a Settings value is not present. 184 */ 185 private static final int DEFAULT_MAX_DHCP_RETRIES = 9; 186 187 /** 188 * The threshold for each kind of error. If a network continuously encounter the same error more 189 * than the threshold times, this network will be disabled. -1 means unavailable. 190 */ 191 private static final int[] NETWORK_SELECTION_DISABLE_THRESHOLD = { 192 -1, // threshold for NETWORK_SELECTION_ENABLE 193 1, // threshold for DISABLED_BAD_LINK 194 5, // threshold for DISABLED_ASSOCIATION_REJECTION 195 5, // threshold for DISABLED_AUTHENTICATION_FAILURE 196 5, // threshold for DISABLED_DHCP_FAILURE 197 5, // threshold for DISABLED_DNS_FAILURE 198 6, // threshold for DISABLED_TLS_VERSION_MISMATCH 199 1, // threshold for DISABLED_AUTHENTICATION_NO_CREDENTIALS 200 1, // threshold for DISABLED_NO_INTERNET 201 1 // threshold for DISABLED_BY_WIFI_MANAGER 202 }; 203 204 /** 205 * Timeout for each kind of error. After the timeout minutes, unblock the network again. 206 */ 207 private static final int[] NETWORK_SELECTION_DISABLE_TIMEOUT = { 208 Integer.MAX_VALUE, // threshold for NETWORK_SELECTION_ENABLE 209 15, // threshold for DISABLED_BAD_LINK 210 5, // threshold for DISABLED_ASSOCIATION_REJECTION 211 5, // threshold for DISABLED_AUTHENTICATION_FAILURE 212 5, // threshold for DISABLED_DHCP_FAILURE 213 5, // threshold for DISABLED_DNS_FAILURE 214 Integer.MAX_VALUE, // threshold for DISABLED_TLS_VERSION 215 Integer.MAX_VALUE, // threshold for DISABLED_AUTHENTICATION_NO_CREDENTIALS 216 Integer.MAX_VALUE, // threshold for DISABLED_NO_INTERNET 217 Integer.MAX_VALUE // threshold for DISABLED_BY_WIFI_MANAGER 218 }; 219 220 public final AtomicBoolean mEnableAutoJoinWhenAssociated = new AtomicBoolean(); 221 public final AtomicBoolean mEnableFullBandScanWhenAssociated = new AtomicBoolean(true); 222 public final AtomicBoolean mEnableChipWakeUpWhenAssociated = new AtomicBoolean(true); 223 public final AtomicBoolean mEnableRssiPollWhenAssociated = new AtomicBoolean(true); 224 public final AtomicInteger mThresholdSaturatedRssi5 = new AtomicInteger(); 225 public final AtomicInteger mThresholdQualifiedRssi24 = new AtomicInteger(); 226 public final AtomicInteger mEnableVerboseLogging = new AtomicInteger(0); 227 public final AtomicInteger mAssociatedFullScanBackoff = 228 new AtomicInteger(); // Will be divided by 8 by WifiStateMachine 229 public final AtomicInteger mAlwaysEnableScansWhileAssociated = new AtomicInteger(0); 230 public final AtomicInteger mMaxNumActiveChannelsForPartialScans = new AtomicInteger(); 231 public final AtomicInteger mWifiDisconnectedShortScanIntervalMs = new AtomicInteger(); 232 public final AtomicInteger mWifiAssociatedShortScanIntervalMs = new AtomicInteger(); 233 234 public boolean mEnableLinkDebouncing; 235 public boolean mEnableWifiCellularHandoverUserTriggeredAdjustment; 236 public int mAssociatedFullScanMaxIntervalMs; 237 public int mNetworkSwitchingBlackListPeriodMs; 238 public int mBadLinkSpeed24; 239 public int mBadLinkSpeed5; 240 public int mGoodLinkSpeed24; 241 public int mGoodLinkSpeed5; 242 243 // These fields are non-final for testing. 244 public AtomicInteger mThresholdQualifiedRssi5 = new AtomicInteger(); 245 public AtomicInteger mThresholdMinimumRssi5 = new AtomicInteger(); 246 public AtomicInteger mThresholdSaturatedRssi24 = new AtomicInteger(); 247 public AtomicInteger mThresholdMinimumRssi24 = new AtomicInteger(); 248 public AtomicInteger mCurrentNetworkBoost = new AtomicInteger(); 249 public AtomicInteger mBandAward5Ghz = new AtomicInteger(); 250 251 /** 252 * If Connectivity Service has triggered an unwanted network disconnect 253 */ 254 public long mLastUnwantedNetworkDisconnectTimestamp = 0; 255 256 /** 257 * Framework keeps a list of ephemeral SSIDs that where deleted by user, 258 * so as, framework knows not to autojoin again those SSIDs based on scorer input. 259 * The list is never cleared up. 260 * 261 * The SSIDs are encoded in a String as per definition of WifiConfiguration.SSID field. 262 */ 263 public Set<String> mDeletedEphemeralSSIDs = new HashSet<String>(); 264 265 /* configured networks with network id as the key */ 266 private final ConfigurationMap mConfiguredNetworks; 267 268 private final LocalLog mLocalLog; 269 private final KeyStore mKeyStore; 270 private final WifiNetworkHistory mWifiNetworkHistory; 271 private final WifiConfigStore mWifiConfigStore; 272 private final AnqpCache mAnqpCache; 273 private final SupplicantBridge mSupplicantBridge; 274 private final SupplicantBridgeCallbacks mSupplicantBridgeCallbacks; 275 private final PasspointManagementObjectManager mMOManager; 276 private final boolean mEnableOsuQueries; 277 private final SIMAccessor mSIMAccessor; 278 private final UserManager mUserManager; 279 private final Object mActiveScanDetailLock = new Object(); 280 281 private Context mContext; 282 private FrameworkFacade mFacade; 283 private Clock mClock; 284 private IpConfigStore mIpconfigStore; 285 private DelayedDiskWrite mWriter; 286 private boolean mOnlyLinkSameCredentialConfigurations; 287 private boolean mShowNetworks = false; 288 private int mCurrentUserId = UserHandle.USER_SYSTEM; 289 290 /* Stores a map of NetworkId to ScanCache */ 291 private ConcurrentHashMap<Integer, ScanDetailCache> mScanDetailCaches; 292 293 /* Tracks the highest priority of configured networks */ 294 private int mLastPriority = -1; 295 296 /** 297 * The mLastSelectedConfiguration is used to remember which network 298 * was selected last by the user. 299 * The connection to this network may not be successful, as well 300 * the selection (i.e. network priority) might not be persisted. 301 * WiFi state machine is the only object that sets this variable. 302 */ 303 private String mLastSelectedConfiguration = null; 304 private long mLastSelectedTimeStamp = 305 WifiConfiguration.NetworkSelectionStatus.INVALID_NETWORK_SELECTION_DISABLE_TIMESTAMP; 306 307 /* 308 * Lost config list, whenever we read a config from networkHistory.txt that was not in 309 * wpa_supplicant.conf 310 */ 311 private HashSet<String> mLostConfigsDbg = new HashSet<String>(); 312 313 private ScanDetail mActiveScanDetail; // ScanDetail associated with active network 314 315 private class SupplicantBridgeCallbacks implements SupplicantBridge.SupplicantBridgeCallbacks { 316 @Override 317 public void notifyANQPResponse(ScanDetail scanDetail, 318 Map<Constants.ANQPElementType, ANQPElement> anqpElements) { 319 updateAnqpCache(scanDetail, anqpElements); 320 if (anqpElements == null || anqpElements.isEmpty()) { 321 return; 322 } 323 scanDetail.propagateANQPInfo(anqpElements); 324 325 Map<HomeSP, PasspointMatch> matches = matchNetwork(scanDetail, false); 326 Log.d(Utils.hs2LogTag(getClass()), scanDetail.getSSID() + " pass 2 matches: " 327 + toMatchString(matches)); 328 329 cacheScanResultForPasspointConfigs(scanDetail, matches, null); 330 } 331 @Override 332 public void notifyIconFailed(long bssid) { 333 Intent intent = new Intent(WifiManager.PASSPOINT_ICON_RECEIVED_ACTION); 334 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 335 intent.putExtra(WifiManager.EXTRA_PASSPOINT_ICON_BSSID, bssid); 336 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 337 } 338 339 } 340 341 WifiConfigManager(Context context, WifiNative wifiNative, FrameworkFacade facade, Clock clock, 342 UserManager userManager, KeyStore keyStore) { 343 mContext = context; 344 mFacade = facade; 345 mClock = clock; 346 mKeyStore = keyStore; 347 mUserManager = userManager; 348 349 if (mShowNetworks) { 350 mLocalLog = wifiNative.getLocalLog(); 351 } else { 352 mLocalLog = null; 353 } 354 355 mWifiAssociatedShortScanIntervalMs.set(mContext.getResources().getInteger( 356 R.integer.config_wifi_associated_short_scan_interval)); 357 mWifiDisconnectedShortScanIntervalMs.set(mContext.getResources().getInteger( 358 R.integer.config_wifi_disconnected_short_scan_interval)); 359 mOnlyLinkSameCredentialConfigurations = mContext.getResources().getBoolean( 360 R.bool.config_wifi_only_link_same_credential_configurations); 361 mMaxNumActiveChannelsForPartialScans.set(mContext.getResources().getInteger( 362 R.integer.config_wifi_framework_associated_partial_scan_max_num_active_channels)); 363 mAssociatedFullScanMaxIntervalMs = mContext.getResources().getInteger( 364 R.integer.config_wifi_framework_associated_full_scan_max_interval); 365 mAssociatedFullScanBackoff.set(mContext.getResources().getInteger( 366 R.integer.config_wifi_framework_associated_full_scan_backoff)); 367 mEnableLinkDebouncing = mContext.getResources().getBoolean( 368 R.bool.config_wifi_enable_disconnection_debounce); 369 mBandAward5Ghz.set(mContext.getResources().getInteger( 370 R.integer.config_wifi_framework_5GHz_preference_boost_factor)); 371 mThresholdMinimumRssi5.set(mContext.getResources().getInteger( 372 R.integer.config_wifi_framework_wifi_score_bad_rssi_threshold_5GHz)); 373 mThresholdQualifiedRssi5.set(mContext.getResources().getInteger( 374 R.integer.config_wifi_framework_wifi_score_low_rssi_threshold_5GHz)); 375 mThresholdSaturatedRssi5.set(mContext.getResources().getInteger( 376 R.integer.config_wifi_framework_wifi_score_good_rssi_threshold_5GHz)); 377 mThresholdMinimumRssi24.set(mContext.getResources().getInteger( 378 R.integer.config_wifi_framework_wifi_score_bad_rssi_threshold_24GHz)); 379 mThresholdQualifiedRssi24.set(mContext.getResources().getInteger( 380 R.integer.config_wifi_framework_wifi_score_low_rssi_threshold_24GHz)); 381 mThresholdSaturatedRssi24.set(mContext.getResources().getInteger( 382 R.integer.config_wifi_framework_wifi_score_good_rssi_threshold_24GHz)); 383 mEnableWifiCellularHandoverUserTriggeredAdjustment = mContext.getResources().getBoolean( 384 R.bool.config_wifi_framework_cellular_handover_enable_user_triggered_adjustment); 385 mBadLinkSpeed24 = mContext.getResources().getInteger( 386 R.integer.config_wifi_framework_wifi_score_bad_link_speed_24); 387 mBadLinkSpeed5 = mContext.getResources().getInteger( 388 R.integer.config_wifi_framework_wifi_score_bad_link_speed_5); 389 mGoodLinkSpeed24 = mContext.getResources().getInteger( 390 R.integer.config_wifi_framework_wifi_score_good_link_speed_24); 391 mGoodLinkSpeed5 = mContext.getResources().getInteger( 392 R.integer.config_wifi_framework_wifi_score_good_link_speed_5); 393 mEnableAutoJoinWhenAssociated.set(mContext.getResources().getBoolean( 394 R.bool.config_wifi_framework_enable_associated_network_selection)); 395 mCurrentNetworkBoost.set(mContext.getResources().getInteger( 396 R.integer.config_wifi_framework_current_network_boost)); 397 mNetworkSwitchingBlackListPeriodMs = mContext.getResources().getInteger( 398 R.integer.config_wifi_network_switching_blacklist_time); 399 400 boolean hs2on = mContext.getResources().getBoolean(R.bool.config_wifi_hotspot2_enabled); 401 Log.d(Utils.hs2LogTag(getClass()), "Passpoint is " + (hs2on ? "enabled" : "disabled")); 402 403 mConfiguredNetworks = new ConfigurationMap(userManager); 404 mMOManager = new PasspointManagementObjectManager(new File(PPS_FILE), hs2on); 405 mEnableOsuQueries = true; 406 mAnqpCache = new AnqpCache(mClock); 407 mSupplicantBridgeCallbacks = new SupplicantBridgeCallbacks(); 408 mSupplicantBridge = new SupplicantBridge(wifiNative, mSupplicantBridgeCallbacks); 409 mScanDetailCaches = new ConcurrentHashMap<>(16, 0.75f, 2); 410 mSIMAccessor = new SIMAccessor(mContext); 411 mWriter = new DelayedDiskWrite(); 412 mIpconfigStore = new IpConfigStore(mWriter); 413 mWifiNetworkHistory = new WifiNetworkHistory(context, mLocalLog, mWriter); 414 mWifiConfigStore = 415 new WifiConfigStore(wifiNative, mKeyStore, mLocalLog, mShowNetworks, true); 416 } 417 418 public void trimANQPCache(boolean all) { 419 mAnqpCache.clear(all, DBG); 420 } 421 422 void enableVerboseLogging(int verbose) { 423 mEnableVerboseLogging.set(verbose); 424 if (verbose > 0) { 425 sVDBG = true; 426 mShowNetworks = true; 427 } else { 428 sVDBG = false; 429 } 430 if (verbose > 1) { 431 sVVDBG = true; 432 } else { 433 sVVDBG = false; 434 } 435 } 436 437 /** 438 * Fetch the list of configured networks 439 * and enable all stored networks in supplicant. 440 */ 441 void loadAndEnableAllNetworks() { 442 if (DBG) log("Loading config and enabling all networks "); 443 loadConfiguredNetworks(); 444 enableAllNetworks(); 445 } 446 447 int getConfiguredNetworksSize() { 448 return mConfiguredNetworks.sizeForCurrentUser(); 449 } 450 451 /** 452 * Fetch the list of currently saved networks (i.e. all configured networks, excluding 453 * ephemeral networks). 454 * @param pskMap Map of preSharedKeys, keyed by the configKey of the configuration the 455 * preSharedKeys belong to 456 * @return List of networks 457 */ 458 private List<WifiConfiguration> getSavedNetworks(Map<String, String> pskMap) { 459 List<WifiConfiguration> networks = new ArrayList<>(); 460 for (WifiConfiguration config : mConfiguredNetworks.valuesForCurrentUser()) { 461 WifiConfiguration newConfig = new WifiConfiguration(config); 462 // When updating this condition, update WifiStateMachine's CONNECT_NETWORK handler to 463 // correctly handle updating existing configs that are filtered out here. 464 if (config.ephemeral) { 465 // Do not enumerate and return this configuration to anyone (e.g. WiFi Picker); 466 // treat it as unknown instead. This configuration can still be retrieved 467 // directly by its key or networkId. 468 continue; 469 } 470 471 if (pskMap != null && config.allowedKeyManagement != null 472 && config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_PSK) 473 && pskMap.containsKey(config.configKey(true))) { 474 newConfig.preSharedKey = pskMap.get(config.configKey(true)); 475 } 476 networks.add(newConfig); 477 } 478 return networks; 479 } 480 481 /** 482 * This function returns all configuration, and is used for debug and creating bug reports. 483 */ 484 private List<WifiConfiguration> getAllConfiguredNetworks() { 485 List<WifiConfiguration> networks = new ArrayList<>(); 486 for (WifiConfiguration config : mConfiguredNetworks.valuesForCurrentUser()) { 487 WifiConfiguration newConfig = new WifiConfiguration(config); 488 networks.add(newConfig); 489 } 490 return networks; 491 } 492 493 /** 494 * Fetch the list of currently saved networks (i.e. all configured networks, excluding 495 * ephemeral networks). 496 * @return List of networks 497 */ 498 public List<WifiConfiguration> getSavedNetworks() { 499 return getSavedNetworks(null); 500 } 501 502 /** 503 * Fetch the list of currently saved networks (i.e. all configured networks, excluding 504 * ephemeral networks), filled with real preSharedKeys. 505 * @return List of networks 506 */ 507 List<WifiConfiguration> getPrivilegedSavedNetworks() { 508 Map<String, String> pskMap = getCredentialsByConfigKeyMap(); 509 List<WifiConfiguration> configurations = getSavedNetworks(pskMap); 510 for (WifiConfiguration configuration : configurations) { 511 try { 512 configuration 513 .setPasspointManagementObjectTree(mMOManager.getMOTree(configuration.FQDN)); 514 } catch (IOException ioe) { 515 Log.w(TAG, "Failed to parse MO from " + configuration.FQDN + ": " + ioe); 516 } 517 } 518 return configurations; 519 } 520 521 /** 522 * Fetch the list of networkId's which are hidden in current user's configuration. 523 * @return List of networkIds 524 */ 525 public Set<Integer> getHiddenConfiguredNetworkIds() { 526 return mConfiguredNetworks.getHiddenNetworkIdsForCurrentUser(); 527 } 528 529 /** 530 * Find matching network for this scanResult 531 */ 532 WifiConfiguration getMatchingConfig(ScanResult scanResult) { 533 534 for (Map.Entry entry : mScanDetailCaches.entrySet()) { 535 Integer netId = (Integer) entry.getKey(); 536 ScanDetailCache cache = (ScanDetailCache) entry.getValue(); 537 WifiConfiguration config = getWifiConfiguration(netId); 538 if (config == null) { 539 continue; 540 } 541 if (cache.get(scanResult.BSSID) != null) { 542 return config; 543 } 544 } 545 546 return null; 547 } 548 549 /** 550 * Fetch the preSharedKeys for all networks. 551 * @return a map from configKey to preSharedKey. 552 */ 553 private Map<String, String> getCredentialsByConfigKeyMap() { 554 return readNetworkVariablesFromSupplicantFile("psk"); 555 } 556 557 /** 558 * Fetch the list of currently saved networks (i.e. all configured networks, excluding 559 * ephemeral networks) that were recently seen. 560 * 561 * @param scanResultAgeMs The maximum age (in ms) of scan results for which we calculate the 562 * RSSI values 563 * @param copy If true, the returned list will contain copies of the configurations for the 564 * saved networks. Otherwise, the returned list will contain references to these 565 * configurations. 566 * @return List of networks 567 */ 568 List<WifiConfiguration> getRecentSavedNetworks(int scanResultAgeMs, boolean copy) { 569 List<WifiConfiguration> networks = new ArrayList<WifiConfiguration>(); 570 571 for (WifiConfiguration config : mConfiguredNetworks.valuesForCurrentUser()) { 572 if (config.ephemeral) { 573 // Do not enumerate and return this configuration to anyone (e.g. WiFi Picker); 574 // treat it as unknown instead. This configuration can still be retrieved 575 // directly by its key or networkId. 576 continue; 577 } 578 579 // Calculate the RSSI for scan results that are more recent than scanResultAgeMs. 580 ScanDetailCache cache = getScanDetailCache(config); 581 if (cache == null) { 582 continue; 583 } 584 config.setVisibility(cache.getVisibility(scanResultAgeMs)); 585 if (config.visibility == null) { 586 continue; 587 } 588 if (config.visibility.rssi5 == WifiConfiguration.INVALID_RSSI 589 && config.visibility.rssi24 == WifiConfiguration.INVALID_RSSI) { 590 continue; 591 } 592 if (copy) { 593 networks.add(new WifiConfiguration(config)); 594 } else { 595 networks.add(config); 596 } 597 } 598 return networks; 599 } 600 601 /** 602 * Update the configuration and BSSID with latest RSSI value. 603 */ 604 void updateConfiguration(WifiInfo info) { 605 WifiConfiguration config = getWifiConfiguration(info.getNetworkId()); 606 if (config != null && getScanDetailCache(config) != null) { 607 ScanDetail scanDetail = getScanDetailCache(config).getScanDetail(info.getBSSID()); 608 if (scanDetail != null) { 609 ScanResult result = scanDetail.getScanResult(); 610 long previousSeen = result.seen; 611 int previousRssi = result.level; 612 613 // Update the scan result 614 scanDetail.setSeen(); 615 result.level = info.getRssi(); 616 617 // Average the RSSI value 618 result.averageRssi(previousRssi, previousSeen, 619 WifiQualifiedNetworkSelector.SCAN_RESULT_MAXIMUNM_AGE); 620 if (sVDBG) { 621 loge("updateConfiguration freq=" + result.frequency 622 + " BSSID=" + result.BSSID 623 + " RSSI=" + result.level 624 + " " + config.configKey()); 625 } 626 } 627 } 628 } 629 630 /** 631 * get the Wificonfiguration for this netId 632 * 633 * @return Wificonfiguration 634 */ 635 public WifiConfiguration getWifiConfiguration(int netId) { 636 return mConfiguredNetworks.getForCurrentUser(netId); 637 } 638 639 /** 640 * Get the Wificonfiguration for this key 641 * @return Wificonfiguration 642 */ 643 public WifiConfiguration getWifiConfiguration(String key) { 644 return mConfiguredNetworks.getByConfigKeyForCurrentUser(key); 645 } 646 647 /** 648 * Enable all networks (if disabled time expire) and save config. This will be a no-op if the 649 * list of configured networks indicates all networks as being enabled 650 */ 651 void enableAllNetworks() { 652 boolean networkEnabledStateChanged = false; 653 654 for (WifiConfiguration config : mConfiguredNetworks.valuesForCurrentUser()) { 655 if (config != null && !config.ephemeral 656 && !config.getNetworkSelectionStatus().isNetworkEnabled()) { 657 if (tryEnableQualifiedNetwork(config)) { 658 networkEnabledStateChanged = true; 659 } 660 } 661 } 662 663 if (networkEnabledStateChanged) { 664 saveConfig(); 665 sendConfiguredNetworksChangedBroadcast(); 666 } 667 } 668 669 private boolean setNetworkPriorityNative(WifiConfiguration config, int priority) { 670 return mWifiConfigStore.setNetworkPriority(config, priority); 671 } 672 673 private boolean setSSIDNative(WifiConfiguration config, String ssid) { 674 return mWifiConfigStore.setNetworkSSID(config, ssid); 675 } 676 677 public boolean updateLastConnectUid(WifiConfiguration config, int uid) { 678 if (config != null) { 679 if (config.lastConnectUid != uid) { 680 config.lastConnectUid = uid; 681 return true; 682 } 683 } 684 return false; 685 } 686 687 /** 688 * Selects the specified network for connection. This involves 689 * updating the priority of all the networks and enabling the given 690 * network while disabling others. 691 * 692 * Selecting a network will leave the other networks disabled and 693 * a call to enableAllNetworks() needs to be issued upon a connection 694 * or a failure event from supplicant 695 * 696 * @param config network to select for connection 697 * @param updatePriorities makes config highest priority network 698 * @return false if the network id is invalid 699 */ 700 boolean selectNetwork(WifiConfiguration config, boolean updatePriorities, int uid) { 701 if (sVDBG) localLogNetwork("selectNetwork", config.networkId); 702 if (config.networkId == INVALID_NETWORK_ID) return false; 703 if (!WifiConfigurationUtil.isVisibleToAnyProfile(config, 704 mUserManager.getProfiles(mCurrentUserId))) { 705 loge("selectNetwork " + Integer.toString(config.networkId) + ": Network config is not " 706 + "visible to current user."); 707 return false; 708 } 709 710 // Reset the priority of each network at start or if it goes too high. 711 if (mLastPriority == -1 || mLastPriority > 1000000) { 712 if (updatePriorities) { 713 for (WifiConfiguration config2 : mConfiguredNetworks.valuesForCurrentUser()) { 714 if (config2.networkId != INVALID_NETWORK_ID) { 715 setNetworkPriorityNative(config2, 0); 716 } 717 } 718 } 719 mLastPriority = 0; 720 } 721 722 // Set to the highest priority and save the configuration. 723 if (updatePriorities) { 724 setNetworkPriorityNative(config, ++mLastPriority); 725 } 726 727 if (config.isPasspoint()) { 728 /* need to slap on the SSID of selected bssid to work */ 729 if (getScanDetailCache(config).size() != 0) { 730 ScanDetail result = getScanDetailCache(config).getFirst(); 731 if (result == null) { 732 loge("Could not find scan result for " + config.BSSID); 733 } else { 734 log("Setting SSID for " + config.networkId + " to" + result.getSSID()); 735 setSSIDNative(config, result.getSSID()); 736 } 737 738 } else { 739 loge("Could not find bssid for " + config); 740 } 741 } 742 743 mWifiConfigStore.enableHS20(config.isPasspoint()); 744 745 if (updatePriorities) { 746 saveConfig(); 747 } 748 749 updateLastConnectUid(config, uid); 750 751 writeKnownNetworkHistory(); 752 753 /* Enable the given network while disabling all other networks */ 754 selectNetworkWithoutBroadcast(config.networkId); 755 756 /* Avoid saving the config & sending a broadcast to prevent settings 757 * from displaying a disabled list of networks */ 758 return true; 759 } 760 761 /** 762 * Add/update the specified configuration and save config 763 * 764 * @param config WifiConfiguration to be saved 765 * @return network update result 766 */ 767 NetworkUpdateResult saveNetwork(WifiConfiguration config, int uid) { 768 WifiConfiguration conf; 769 770 // A new network cannot have null SSID 771 if (config == null || (config.networkId == INVALID_NETWORK_ID && config.SSID == null)) { 772 return new NetworkUpdateResult(INVALID_NETWORK_ID); 773 } 774 775 if (!WifiConfigurationUtil.isVisibleToAnyProfile(config, 776 mUserManager.getProfiles(mCurrentUserId))) { 777 return new NetworkUpdateResult(INVALID_NETWORK_ID); 778 } 779 780 if (sVDBG) localLogNetwork("WifiConfigManager: saveNetwork netId", config.networkId); 781 if (sVDBG) { 782 logd("WifiConfigManager saveNetwork," 783 + " size=" + Integer.toString(mConfiguredNetworks.sizeForAllUsers()) 784 + " (for all users)" 785 + " SSID=" + config.SSID 786 + " Uid=" + Integer.toString(config.creatorUid) 787 + "/" + Integer.toString(config.lastUpdateUid)); 788 } 789 790 if (mDeletedEphemeralSSIDs.remove(config.SSID)) { 791 if (sVDBG) { 792 loge("WifiConfigManager: removed from ephemeral blacklist: " + config.SSID); 793 } 794 // NOTE: This will be flushed to disk as part of the addOrUpdateNetworkNative call 795 // below, since we're creating/modifying a config. 796 } 797 798 boolean newNetwork = (config.networkId == INVALID_NETWORK_ID); 799 NetworkUpdateResult result = addOrUpdateNetworkNative(config, uid); 800 int netId = result.getNetworkId(); 801 802 if (sVDBG) localLogNetwork("WifiConfigManager: saveNetwork got it back netId=", netId); 803 804 conf = mConfiguredNetworks.getForCurrentUser(netId); 805 if (conf != null) { 806 if (!conf.getNetworkSelectionStatus().isNetworkEnabled()) { 807 if (sVDBG) localLog("WifiConfigManager: re-enabling: " + conf.SSID); 808 809 // reenable autojoin, since new information has been provided 810 updateNetworkSelectionStatus(netId, 811 WifiConfiguration.NetworkSelectionStatus.NETWORK_SELECTION_ENABLE); 812 } 813 if (sVDBG) { 814 loge("WifiConfigManager: saveNetwork got config back netId=" 815 + Integer.toString(netId) 816 + " uid=" + Integer.toString(config.creatorUid)); 817 } 818 } 819 820 saveConfig(); 821 sendConfiguredNetworksChangedBroadcast( 822 conf, 823 result.isNewNetwork() 824 ? WifiManager.CHANGE_REASON_ADDED 825 : WifiManager.CHANGE_REASON_CONFIG_CHANGE); 826 return result; 827 } 828 829 void noteRoamingFailure(WifiConfiguration config, int reason) { 830 if (config == null) return; 831 config.lastRoamingFailure = System.currentTimeMillis(); 832 config.roamingFailureBlackListTimeMilli = 833 2 * (config.roamingFailureBlackListTimeMilli + 1000); 834 if (config.roamingFailureBlackListTimeMilli > mNetworkSwitchingBlackListPeriodMs) { 835 config.roamingFailureBlackListTimeMilli = mNetworkSwitchingBlackListPeriodMs; 836 } 837 config.lastRoamingFailureReason = reason; 838 } 839 840 void saveWifiConfigBSSID(WifiConfiguration config, String bssid) { 841 mWifiConfigStore.setNetworkBSSID(config, bssid); 842 } 843 844 845 void updateStatus(int netId, DetailedState state) { 846 if (netId != INVALID_NETWORK_ID) { 847 WifiConfiguration config = mConfiguredNetworks.getForAllUsers(netId); 848 if (config == null) return; 849 switch (state) { 850 case CONNECTED: 851 config.status = Status.CURRENT; 852 //we successfully connected, hence remove the blacklist 853 updateNetworkSelectionStatus(netId, 854 WifiConfiguration.NetworkSelectionStatus.NETWORK_SELECTION_ENABLE); 855 break; 856 case DISCONNECTED: 857 //If network is already disabled, keep the status 858 if (config.status == Status.CURRENT) { 859 config.status = Status.ENABLED; 860 } 861 break; 862 default: 863 //do nothing, retain the existing state 864 break; 865 } 866 } 867 } 868 869 870 /** 871 * Disable an ephemeral SSID for the purpose of auto-joining thru scored. 872 * This SSID will never be scored anymore. 873 * The only way to "un-disable it" is if the user create a network for that SSID and then 874 * forget it. 875 * 876 * @param ssid caller must ensure that the SSID passed thru this API match 877 * the WifiConfiguration.SSID rules, and thus be surrounded by quotes. 878 * @return the {@link WifiConfiguration} corresponding to this SSID, if any, so that we can 879 * disconnect if this is the current network. 880 */ 881 WifiConfiguration disableEphemeralNetwork(String ssid) { 882 if (ssid == null) { 883 return null; 884 } 885 886 WifiConfiguration foundConfig = mConfiguredNetworks.getEphemeralForCurrentUser(ssid); 887 888 mDeletedEphemeralSSIDs.add(ssid); 889 loge("Forget ephemeral SSID " + ssid + " num=" + mDeletedEphemeralSSIDs.size()); 890 891 if (foundConfig != null) { 892 loge("Found ephemeral config in disableEphemeralNetwork: " + foundConfig.networkId); 893 } 894 895 writeKnownNetworkHistory(); 896 return foundConfig; 897 } 898 899 /** 900 * Forget the specified network and save config 901 * 902 * @param netId network to forget 903 * @return {@code true} if it succeeds, {@code false} otherwise 904 */ 905 boolean forgetNetwork(int netId) { 906 if (mShowNetworks) localLogNetwork("forgetNetwork", netId); 907 if (!removeNetwork(netId)) { 908 loge("Failed to forget network " + netId); 909 return false; 910 } 911 saveConfig(); 912 writeKnownNetworkHistory(); 913 return true; 914 } 915 916 /** 917 * Add/update a network. Note that there is no saveConfig operation. 918 * This function is retained for compatibility with the public 919 * API. The more powerful saveNetwork() is used by the 920 * state machine 921 * 922 * @param config wifi configuration to add/update 923 * @return network Id 924 */ 925 int addOrUpdateNetwork(WifiConfiguration config, int uid) { 926 if (config == null || !WifiConfigurationUtil.isVisibleToAnyProfile(config, 927 mUserManager.getProfiles(mCurrentUserId))) { 928 return WifiConfiguration.INVALID_NETWORK_ID; 929 } 930 931 if (mShowNetworks) localLogNetwork("addOrUpdateNetwork id=", config.networkId); 932 if (config.isPasspoint()) { 933 /* create a temporary SSID with providerFriendlyName */ 934 Long csum = getChecksum(config.FQDN); 935 config.SSID = csum.toString(); 936 config.enterpriseConfig.setDomainSuffixMatch(config.FQDN); 937 } 938 939 NetworkUpdateResult result = addOrUpdateNetworkNative(config, uid); 940 if (result.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 941 WifiConfiguration conf = mConfiguredNetworks.getForCurrentUser(result.getNetworkId()); 942 if (conf != null) { 943 sendConfiguredNetworksChangedBroadcast( 944 conf, 945 result.isNewNetwork 946 ? WifiManager.CHANGE_REASON_ADDED 947 : WifiManager.CHANGE_REASON_CONFIG_CHANGE); 948 } 949 } 950 951 return result.getNetworkId(); 952 } 953 954 public int addPasspointManagementObject(String managementObject) { 955 try { 956 mMOManager.addSP(managementObject); 957 return 0; 958 } catch (IOException | SAXException e) { 959 return -1; 960 } 961 } 962 963 public int modifyPasspointMo(String fqdn, List<PasspointManagementObjectDefinition> mos) { 964 try { 965 return mMOManager.modifySP(fqdn, mos); 966 } catch (IOException | SAXException e) { 967 return -1; 968 } 969 } 970 971 public boolean queryPasspointIcon(long bssid, String fileName) { 972 return mSupplicantBridge.doIconQuery(bssid, fileName); 973 } 974 975 public int matchProviderWithCurrentNetwork(String fqdn) { 976 ScanDetail scanDetail = null; 977 synchronized (mActiveScanDetailLock) { 978 scanDetail = mActiveScanDetail; 979 } 980 if (scanDetail == null) { 981 return PasspointMatch.None.ordinal(); 982 } 983 HomeSP homeSP = mMOManager.getHomeSP(fqdn); 984 if (homeSP == null) { 985 return PasspointMatch.None.ordinal(); 986 } 987 988 ANQPData anqpData = mAnqpCache.getEntry(scanDetail.getNetworkDetail()); 989 990 Map<Constants.ANQPElementType, ANQPElement> anqpElements = 991 anqpData != null ? anqpData.getANQPElements() : null; 992 993 return homeSP.match(scanDetail.getNetworkDetail(), anqpElements, mSIMAccessor).ordinal(); 994 } 995 996 /** 997 * General PnoNetwork list sorting algorithm: 998 * 1, Place the fully enabled networks first. Among the fully enabled networks, 999 * sort them in the oder determined by the return of |compareConfigurations| method 1000 * implementation. 1001 * 2. Next place all the temporarily disabled networks. Among the temporarily disabled 1002 * networks, sort them in the order determined by the return of |compareConfigurations| method 1003 * implementation. 1004 * 3. Place the permanently disabled networks last. The order among permanently disabled 1005 * networks doesn't matter. 1006 */ 1007 private static class PnoListComparator implements Comparator<WifiConfiguration> { 1008 1009 public final int ENABLED_NETWORK_SCORE = 3; 1010 public final int TEMPORARY_DISABLED_NETWORK_SCORE = 2; 1011 public final int PERMANENTLY_DISABLED_NETWORK_SCORE = 1; 1012 1013 @Override 1014 public int compare(WifiConfiguration a, WifiConfiguration b) { 1015 int configAScore = getPnoNetworkSortScore(a); 1016 int configBScore = getPnoNetworkSortScore(b); 1017 if (configAScore == configBScore) { 1018 return compareConfigurations(a, b); 1019 } else { 1020 return Integer.compare(configBScore, configAScore); 1021 } 1022 } 1023 1024 // This needs to be implemented by the connected/disconnected PNO list comparator. 1025 public int compareConfigurations(WifiConfiguration a, WifiConfiguration b) { 1026 return 0; 1027 } 1028 1029 /** 1030 * Returns an integer representing a score for each configuration. The scores are assigned 1031 * based on the status of the configuration. The scores are assigned according to the order: 1032 * Fully enabled network > Temporarily disabled network > Permanently disabled network. 1033 */ 1034 private int getPnoNetworkSortScore(WifiConfiguration config) { 1035 if (config.getNetworkSelectionStatus().isNetworkEnabled()) { 1036 return ENABLED_NETWORK_SCORE; 1037 } else if (config.getNetworkSelectionStatus().isNetworkTemporaryDisabled()) { 1038 return TEMPORARY_DISABLED_NETWORK_SCORE; 1039 } else { 1040 return PERMANENTLY_DISABLED_NETWORK_SCORE; 1041 } 1042 } 1043 } 1044 1045 /** 1046 * Disconnected PnoNetwork list sorting algorithm: 1047 * Place the configurations in descending order of their |numAssociation| values. If networks 1048 * have the same |numAssociation|, then sort them in descending order of their |priority| 1049 * values. 1050 */ 1051 private static final PnoListComparator sDisconnectedPnoListComparator = 1052 new PnoListComparator() { 1053 @Override 1054 public int compareConfigurations(WifiConfiguration a, WifiConfiguration b) { 1055 if (a.numAssociation != b.numAssociation) { 1056 return Long.compare(b.numAssociation, a.numAssociation); 1057 } else { 1058 return Integer.compare(b.priority, a.priority); 1059 } 1060 } 1061 }; 1062 1063 /** 1064 * Retrieves an updated list of priorities for all the saved networks before 1065 * enabling disconnected PNO (wpa_supplicant based PNO). 1066 * 1067 * wpa_supplicant uses the priority of networks to build the list of SSID's to monitor 1068 * during PNO. If there are a lot of saved networks, this list will be truncated and we 1069 * might end up not connecting to the networks we use most frequently. So, We want the networks 1070 * to be re-sorted based on the relative |numAssociation| values. 1071 * 1072 * @return list of networks with updated priorities. 1073 */ 1074 public ArrayList<WifiScanner.PnoSettings.PnoNetwork> retrieveDisconnectedPnoNetworkList() { 1075 return retrievePnoNetworkList(sDisconnectedPnoListComparator); 1076 } 1077 1078 /** 1079 * Connected PnoNetwork list sorting algorithm: 1080 * Place the configurations with |lastSeenInQualifiedNetworkSelection| set first. If networks 1081 * have the same value, then sort them in descending order of their |numAssociation| 1082 * values. 1083 */ 1084 private static final PnoListComparator sConnectedPnoListComparator = 1085 new PnoListComparator() { 1086 @Override 1087 public int compareConfigurations(WifiConfiguration a, WifiConfiguration b) { 1088 boolean isConfigALastSeen = 1089 a.getNetworkSelectionStatus().getSeenInLastQualifiedNetworkSelection(); 1090 boolean isConfigBLastSeen = 1091 b.getNetworkSelectionStatus().getSeenInLastQualifiedNetworkSelection(); 1092 if (isConfigALastSeen != isConfigBLastSeen) { 1093 return Boolean.compare(isConfigBLastSeen, isConfigALastSeen); 1094 } else { 1095 return Long.compare(b.numAssociation, a.numAssociation); 1096 } 1097 } 1098 }; 1099 1100 /** 1101 * Retrieves an updated list of priorities for all the saved networks before 1102 * enabling connected PNO (HAL based ePno). 1103 * 1104 * @return list of networks with updated priorities. 1105 */ 1106 public ArrayList<WifiScanner.PnoSettings.PnoNetwork> retrieveConnectedPnoNetworkList() { 1107 return retrievePnoNetworkList(sConnectedPnoListComparator); 1108 } 1109 1110 /** 1111 * Create a PnoNetwork object from the provided WifiConfiguration. 1112 * @param config Configuration corresponding to the network. 1113 * @param newPriority New priority to be assigned to the network. 1114 */ 1115 private static WifiScanner.PnoSettings.PnoNetwork createPnoNetworkFromWifiConfiguration( 1116 WifiConfiguration config, int newPriority) { 1117 WifiScanner.PnoSettings.PnoNetwork pnoNetwork = 1118 new WifiScanner.PnoSettings.PnoNetwork(config.SSID); 1119 pnoNetwork.networkId = config.networkId; 1120 pnoNetwork.priority = newPriority; 1121 if (config.hiddenSSID) { 1122 pnoNetwork.flags |= WifiScanner.PnoSettings.PnoNetwork.FLAG_DIRECTED_SCAN; 1123 } 1124 pnoNetwork.flags |= WifiScanner.PnoSettings.PnoNetwork.FLAG_A_BAND; 1125 pnoNetwork.flags |= WifiScanner.PnoSettings.PnoNetwork.FLAG_G_BAND; 1126 if (config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_PSK)) { 1127 pnoNetwork.authBitField |= WifiScanner.PnoSettings.PnoNetwork.AUTH_CODE_PSK; 1128 } else if (config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_EAP) 1129 || config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.IEEE8021X)) { 1130 pnoNetwork.authBitField |= WifiScanner.PnoSettings.PnoNetwork.AUTH_CODE_EAPOL; 1131 } else { 1132 pnoNetwork.authBitField |= WifiScanner.PnoSettings.PnoNetwork.AUTH_CODE_OPEN; 1133 } 1134 return pnoNetwork; 1135 } 1136 1137 /** 1138 * Retrieves an updated list of priorities for all the saved networks before 1139 * enabling/disabling PNO. 1140 * 1141 * @param pnoListComparator The comparator to use for sorting networks 1142 * @return list of networks with updated priorities. 1143 */ 1144 private ArrayList<WifiScanner.PnoSettings.PnoNetwork> retrievePnoNetworkList( 1145 PnoListComparator pnoListComparator) { 1146 ArrayList<WifiScanner.PnoSettings.PnoNetwork> pnoList = new ArrayList<>(); 1147 ArrayList<WifiConfiguration> wifiConfigurations = 1148 new ArrayList<>(mConfiguredNetworks.valuesForCurrentUser()); 1149 Collections.sort(wifiConfigurations, pnoListComparator); 1150 // Let's use the network list size as the highest priority and then go down from there. 1151 // So, the most frequently connected network has the highest priority now. 1152 int priority = wifiConfigurations.size(); 1153 for (WifiConfiguration config : wifiConfigurations) { 1154 pnoList.add(createPnoNetworkFromWifiConfiguration(config, priority)); 1155 priority--; 1156 } 1157 return pnoList; 1158 } 1159 1160 /** 1161 * Remove a network. Note that there is no saveConfig operation. 1162 * This function is retained for compatibility with the public 1163 * API. The more powerful forgetNetwork() is used by the 1164 * state machine for network removal 1165 * 1166 * @param netId network to be removed 1167 * @return {@code true} if it succeeds, {@code false} otherwise 1168 */ 1169 boolean removeNetwork(int netId) { 1170 if (mShowNetworks) localLogNetwork("removeNetwork", netId); 1171 WifiConfiguration config = mConfiguredNetworks.getForCurrentUser(netId); 1172 if (!removeConfigAndSendBroadcastIfNeeded(config)) { 1173 return false; 1174 } 1175 if (config.isPasspoint()) { 1176 writePasspointConfigs(config.FQDN, null); 1177 } 1178 return true; 1179 } 1180 1181 private static Long getChecksum(String source) { 1182 Checksum csum = new CRC32(); 1183 csum.update(source.getBytes(), 0, source.getBytes().length); 1184 return csum.getValue(); 1185 } 1186 1187 private boolean removeConfigWithoutBroadcast(WifiConfiguration config) { 1188 if (config == null) { 1189 return false; 1190 } 1191 if (!mWifiConfigStore.removeNetwork(config)) { 1192 loge("Failed to remove network " + config.networkId); 1193 return false; 1194 } 1195 if (config.configKey().equals(mLastSelectedConfiguration)) { 1196 mLastSelectedConfiguration = null; 1197 } 1198 mConfiguredNetworks.remove(config.networkId); 1199 mScanDetailCaches.remove(config.networkId); 1200 return true; 1201 } 1202 1203 private boolean removeConfigAndSendBroadcastIfNeeded(WifiConfiguration config) { 1204 if (!removeConfigWithoutBroadcast(config)) { 1205 return false; 1206 } 1207 String key = config.configKey(); 1208 if (sVDBG) { 1209 logd("removeNetwork " + " key=" + key + " config.id=" + config.networkId); 1210 } 1211 writeIpAndProxyConfigurations(); 1212 sendConfiguredNetworksChangedBroadcast(config, WifiManager.CHANGE_REASON_REMOVED); 1213 if (!config.ephemeral) { 1214 removeUserSelectionPreference(key); 1215 } 1216 writeKnownNetworkHistory(); 1217 return true; 1218 } 1219 1220 private void removeUserSelectionPreference(String configKey) { 1221 if (DBG) { 1222 Log.d(TAG, "removeUserSelectionPreference: key is " + configKey); 1223 } 1224 if (configKey == null) { 1225 return; 1226 } 1227 for (WifiConfiguration config : mConfiguredNetworks.valuesForCurrentUser()) { 1228 WifiConfiguration.NetworkSelectionStatus status = config.getNetworkSelectionStatus(); 1229 String connectChoice = status.getConnectChoice(); 1230 if (connectChoice != null && connectChoice.equals(configKey)) { 1231 Log.d(TAG, "remove connect choice:" + connectChoice + " from " + config.SSID 1232 + " : " + config.networkId); 1233 status.setConnectChoice(null); 1234 status.setConnectChoiceTimestamp(WifiConfiguration.NetworkSelectionStatus 1235 .INVALID_NETWORK_SELECTION_DISABLE_TIMESTAMP); 1236 } 1237 } 1238 } 1239 1240 /* 1241 * Remove all networks associated with an application 1242 * 1243 * @param packageName name of the package of networks to remove 1244 * @return {@code true} if all networks removed successfully, {@code false} otherwise 1245 */ 1246 boolean removeNetworksForApp(ApplicationInfo app) { 1247 if (app == null || app.packageName == null) { 1248 return false; 1249 } 1250 1251 boolean success = true; 1252 1253 WifiConfiguration [] copiedConfigs = 1254 mConfiguredNetworks.valuesForCurrentUser().toArray(new WifiConfiguration[0]); 1255 for (WifiConfiguration config : copiedConfigs) { 1256 if (app.uid != config.creatorUid || !app.packageName.equals(config.creatorName)) { 1257 continue; 1258 } 1259 if (mShowNetworks) { 1260 localLog("Removing network " + config.SSID 1261 + ", application \"" + app.packageName + "\" uninstalled" 1262 + " from user " + UserHandle.getUserId(app.uid)); 1263 } 1264 success &= removeNetwork(config.networkId); 1265 } 1266 1267 saveConfig(); 1268 1269 return success; 1270 } 1271 1272 boolean removeNetworksForUser(int userId) { 1273 boolean success = true; 1274 1275 WifiConfiguration[] copiedConfigs = 1276 mConfiguredNetworks.valuesForAllUsers().toArray(new WifiConfiguration[0]); 1277 for (WifiConfiguration config : copiedConfigs) { 1278 if (userId != UserHandle.getUserId(config.creatorUid)) { 1279 continue; 1280 } 1281 success &= removeNetwork(config.networkId); 1282 if (mShowNetworks) { 1283 localLog("Removing network " + config.SSID 1284 + ", user " + userId + " removed"); 1285 } 1286 } 1287 1288 return success; 1289 } 1290 1291 /** 1292 * Enable a network. Note that there is no saveConfig operation. 1293 * This function is retained for compatibility with the public 1294 * API. The more powerful selectNetwork()/saveNetwork() is used by the 1295 * state machine for connecting to a network 1296 * 1297 * @param netId network to be enabled 1298 * @return {@code true} if it succeeds, {@code false} otherwise 1299 */ 1300 boolean enableNetwork(int netId, boolean disableOthers, int uid) { 1301 WifiConfiguration config = mConfiguredNetworks.getForCurrentUser(netId); 1302 if (config == null) { 1303 return false; 1304 } 1305 boolean ret = true; 1306 if (disableOthers) { 1307 ret = selectNetworkWithoutBroadcast(netId); 1308 if (sVDBG) { 1309 localLogNetwork("enableNetwork(disableOthers=true, uid=" + uid + ") ", netId); 1310 } 1311 updateLastConnectUid(getWifiConfiguration(netId), uid); 1312 1313 writeKnownNetworkHistory(); 1314 sendConfiguredNetworksChangedBroadcast(); 1315 } else { 1316 if (sVDBG) localLogNetwork("enableNetwork(disableOthers=false) ", netId); 1317 WifiConfiguration enabledNetwork; 1318 synchronized (mConfiguredNetworks) { // !!! Useless synchronization! 1319 enabledNetwork = mConfiguredNetworks.getForCurrentUser(netId); 1320 } 1321 // check just in case the network was removed by someone else. 1322 if (enabledNetwork != null) { 1323 sendConfiguredNetworksChangedBroadcast(enabledNetwork, 1324 WifiManager.CHANGE_REASON_CONFIG_CHANGE); 1325 } 1326 } 1327 return ret; 1328 } 1329 1330 boolean selectNetworkWithoutBroadcast(int netId) { 1331 return mWifiConfigStore.selectNetwork( 1332 mConfiguredNetworks.getForCurrentUser(netId), 1333 mConfiguredNetworks.valuesForCurrentUser()); 1334 } 1335 1336 /** 1337 * Disable a network in wpa_supplicant. 1338 */ 1339 boolean disableNetworkNative(WifiConfiguration config) { 1340 return mWifiConfigStore.disableNetwork(config); 1341 } 1342 1343 /** 1344 * Disable all networks in wpa_supplicant. 1345 */ 1346 void disableAllNetworksNative() { 1347 mWifiConfigStore.disableAllNetworks(mConfiguredNetworks.valuesForCurrentUser()); 1348 } 1349 1350 /** 1351 * Disable a network. Note that there is no saveConfig operation. 1352 * @param netId network to be disabled 1353 * @return {@code true} if it succeeds, {@code false} otherwise 1354 */ 1355 boolean disableNetwork(int netId) { 1356 return mWifiConfigStore.disableNetwork(mConfiguredNetworks.getForCurrentUser(netId)); 1357 } 1358 1359 /** 1360 * Update a network according to the update reason and its current state 1361 * @param netId The network ID of the network need update 1362 * @param reason The reason to update the network 1363 * @return false if no change made to the input configure file, can due to error or need not 1364 * true the input config file has been changed 1365 */ 1366 boolean updateNetworkSelectionStatus(int netId, int reason) { 1367 WifiConfiguration config = getWifiConfiguration(netId); 1368 return updateNetworkSelectionStatus(config, reason); 1369 } 1370 1371 /** 1372 * Update a network according to the update reason and its current state 1373 * @param config the network need update 1374 * @param reason The reason to update the network 1375 * @return false if no change made to the input configure file, can due to error or need not 1376 * true the input config file has been changed 1377 */ 1378 boolean updateNetworkSelectionStatus(WifiConfiguration config, int reason) { 1379 if (config == null) { 1380 return false; 1381 } 1382 1383 WifiConfiguration.NetworkSelectionStatus networkStatus = config.getNetworkSelectionStatus(); 1384 if (reason == WifiConfiguration.NetworkSelectionStatus.NETWORK_SELECTION_ENABLE) { 1385 updateNetworkStatus(config, WifiConfiguration.NetworkSelectionStatus 1386 .NETWORK_SELECTION_ENABLE); 1387 localLog("Enable network:" + config.configKey()); 1388 return true; 1389 } 1390 1391 networkStatus.incrementDisableReasonCounter(reason); 1392 if (DBG) { 1393 localLog("Network:" + config.SSID + "disable counter of " 1394 + WifiConfiguration.NetworkSelectionStatus.getNetworkDisableReasonString(reason) 1395 + " is: " + networkStatus.getDisableReasonCounter(reason) + "and threshold is: " 1396 + NETWORK_SELECTION_DISABLE_THRESHOLD[reason]); 1397 } 1398 1399 if (networkStatus.getDisableReasonCounter(reason) 1400 >= NETWORK_SELECTION_DISABLE_THRESHOLD[reason]) { 1401 return updateNetworkStatus(config, reason); 1402 } 1403 return true; 1404 } 1405 1406 /** 1407 * Check the config. If it is temporarily disabled, check the disable time is expired or not, If 1408 * expired, enabled it again for qualified network selection. 1409 * @param networkId the id of the network to be checked for possible unblock (due to timeout) 1410 * @return true if network status has been changed 1411 * false network status is not changed 1412 */ 1413 boolean tryEnableQualifiedNetwork(int networkId) { 1414 WifiConfiguration config = getWifiConfiguration(networkId); 1415 if (config == null) { 1416 localLog("updateQualifiedNetworkstatus invalid network."); 1417 return false; 1418 } 1419 return tryEnableQualifiedNetwork(config); 1420 } 1421 1422 /** 1423 * Check the config. If it is temporarily disabled, check the disable is expired or not, If 1424 * expired, enabled it again for qualified network selection. 1425 * @param config network to be checked for possible unblock (due to timeout) 1426 * @return true if network status has been changed 1427 * false network status is not changed 1428 */ 1429 boolean tryEnableQualifiedNetwork(WifiConfiguration config) { 1430 WifiConfiguration.NetworkSelectionStatus networkStatus = config.getNetworkSelectionStatus(); 1431 if (networkStatus.isNetworkTemporaryDisabled()) { 1432 //time difference in minutes 1433 long timeDifference = (System.currentTimeMillis() 1434 - networkStatus.getDisableTime()) / 1000 / 60; 1435 if (timeDifference < 0 || timeDifference 1436 >= NETWORK_SELECTION_DISABLE_TIMEOUT[ 1437 networkStatus.getNetworkSelectionDisableReason()]) { 1438 updateNetworkSelectionStatus(config.networkId, 1439 networkStatus.NETWORK_SELECTION_ENABLE); 1440 return true; 1441 } 1442 } 1443 return false; 1444 } 1445 1446 /** 1447 * Update a network's status. Note that there is no saveConfig operation. 1448 * @param config network to be updated 1449 * @param reason reason code for updated 1450 * @return false if no change made to the input configure file, can due to error or need not 1451 * true the input config file has been changed 1452 */ 1453 boolean updateNetworkStatus(WifiConfiguration config, int reason) { 1454 localLog("updateNetworkStatus:" + (config == null ? null : config.SSID)); 1455 if (config == null) { 1456 return false; 1457 } 1458 1459 WifiConfiguration.NetworkSelectionStatus networkStatus = config.getNetworkSelectionStatus(); 1460 if (reason < 0 || reason >= WifiConfiguration.NetworkSelectionStatus 1461 .NETWORK_SELECTION_DISABLED_MAX) { 1462 localLog("Invalid Network disable reason:" + reason); 1463 return false; 1464 } 1465 1466 if (reason == WifiConfiguration.NetworkSelectionStatus.NETWORK_SELECTION_ENABLE) { 1467 if (networkStatus.isNetworkEnabled()) { 1468 if (DBG) { 1469 localLog("Need not change Qualified network Selection status since" 1470 + " already enabled"); 1471 } 1472 return false; 1473 } 1474 networkStatus.setNetworkSelectionStatus(WifiConfiguration.NetworkSelectionStatus 1475 .NETWORK_SELECTION_ENABLED); 1476 networkStatus.setNetworkSelectionDisableReason(reason); 1477 networkStatus.setDisableTime( 1478 WifiConfiguration.NetworkSelectionStatus 1479 .INVALID_NETWORK_SELECTION_DISABLE_TIMESTAMP); 1480 networkStatus.clearDisableReasonCounter(); 1481 String disableTime = DateFormat.getDateTimeInstance().format(new Date()); 1482 if (DBG) { 1483 localLog("Re-enable network: " + config.SSID + " at " + disableTime); 1484 } 1485 sendConfiguredNetworksChangedBroadcast(config, WifiManager.CHANGE_REASON_CONFIG_CHANGE); 1486 } else { 1487 //disable the network 1488 if (networkStatus.isNetworkPermanentlyDisabled()) { 1489 //alreay permanent disable 1490 if (DBG) { 1491 localLog("Do nothing. Alreay permanent disabled! " 1492 + WifiConfiguration.NetworkSelectionStatus 1493 .getNetworkDisableReasonString(reason)); 1494 } 1495 return false; 1496 } else if (networkStatus.isNetworkTemporaryDisabled() 1497 && reason < WifiConfiguration.NetworkSelectionStatus 1498 .DISABLED_TLS_VERSION_MISMATCH) { 1499 //alreay temporarily disable 1500 if (DBG) { 1501 localLog("Do nothing. Already temporarily disabled! " 1502 + WifiConfiguration.NetworkSelectionStatus 1503 .getNetworkDisableReasonString(reason)); 1504 } 1505 return false; 1506 } 1507 1508 if (networkStatus.isNetworkEnabled()) { 1509 disableNetworkNative(config); 1510 sendConfiguredNetworksChangedBroadcast(config, 1511 WifiManager.CHANGE_REASON_CONFIG_CHANGE); 1512 localLog("Disable network " + config.SSID + " reason:" 1513 + WifiConfiguration.NetworkSelectionStatus 1514 .getNetworkDisableReasonString(reason)); 1515 } 1516 if (reason < WifiConfiguration.NetworkSelectionStatus.DISABLED_TLS_VERSION_MISMATCH) { 1517 networkStatus.setNetworkSelectionStatus(WifiConfiguration.NetworkSelectionStatus 1518 .NETWORK_SELECTION_TEMPORARY_DISABLED); 1519 networkStatus.setDisableTime(System.currentTimeMillis()); 1520 } else { 1521 networkStatus.setNetworkSelectionStatus(WifiConfiguration.NetworkSelectionStatus 1522 .NETWORK_SELECTION_PERMANENTLY_DISABLED); 1523 } 1524 networkStatus.setNetworkSelectionDisableReason(reason); 1525 if (DBG) { 1526 String disableTime = DateFormat.getDateTimeInstance().format(new Date()); 1527 localLog("Network:" + config.SSID + "Configure new status:" 1528 + networkStatus.getNetworkStatusString() + " with reason:" 1529 + networkStatus.getNetworkDisableReasonString() + " at: " + disableTime); 1530 } 1531 } 1532 return true; 1533 } 1534 1535 /** 1536 * Save the configured networks in supplicant to disk 1537 * @return {@code true} if it succeeds, {@code false} otherwise 1538 */ 1539 boolean saveConfig() { 1540 return mWifiConfigStore.saveConfig(); 1541 } 1542 1543 /** 1544 * Start WPS pin method configuration with pin obtained 1545 * from the access point 1546 * @param config WPS configuration 1547 * @return Wps result containing status and pin 1548 */ 1549 WpsResult startWpsWithPinFromAccessPoint(WpsInfo config) { 1550 return mWifiConfigStore.startWpsWithPinFromAccessPoint( 1551 config, mConfiguredNetworks.valuesForCurrentUser()); 1552 } 1553 1554 /** 1555 * Start WPS pin method configuration with obtained 1556 * from the device 1557 * @return WpsResult indicating status and pin 1558 */ 1559 WpsResult startWpsWithPinFromDevice(WpsInfo config) { 1560 return mWifiConfigStore.startWpsWithPinFromDevice( 1561 config, mConfiguredNetworks.valuesForCurrentUser()); 1562 } 1563 1564 /** 1565 * Start WPS push button configuration 1566 * @param config WPS configuration 1567 * @return WpsResult indicating status and pin 1568 */ 1569 WpsResult startWpsPbc(WpsInfo config) { 1570 return mWifiConfigStore.startWpsPbc( 1571 config, mConfiguredNetworks.valuesForCurrentUser()); 1572 } 1573 1574 /** 1575 * Fetch the static IP configuration for a given network id 1576 */ 1577 StaticIpConfiguration getStaticIpConfiguration(int netId) { 1578 WifiConfiguration config = mConfiguredNetworks.getForCurrentUser(netId); 1579 if (config != null) { 1580 return config.getStaticIpConfiguration(); 1581 } 1582 return null; 1583 } 1584 1585 /** 1586 * Set the static IP configuration for a given network id 1587 */ 1588 void setStaticIpConfiguration(int netId, StaticIpConfiguration staticIpConfiguration) { 1589 WifiConfiguration config = mConfiguredNetworks.getForCurrentUser(netId); 1590 if (config != null) { 1591 config.setStaticIpConfiguration(staticIpConfiguration); 1592 } 1593 } 1594 1595 /** 1596 * set default GW MAC address 1597 */ 1598 void setDefaultGwMacAddress(int netId, String macAddress) { 1599 WifiConfiguration config = mConfiguredNetworks.getForCurrentUser(netId); 1600 if (config != null) { 1601 //update defaultGwMacAddress 1602 config.defaultGwMacAddress = macAddress; 1603 } 1604 } 1605 1606 1607 /** 1608 * Fetch the proxy properties for a given network id 1609 * @param netId id 1610 * @return ProxyInfo for the network id 1611 */ 1612 ProxyInfo getProxyProperties(int netId) { 1613 WifiConfiguration config = mConfiguredNetworks.getForCurrentUser(netId); 1614 if (config != null) { 1615 return config.getHttpProxy(); 1616 } 1617 return null; 1618 } 1619 1620 /** 1621 * Return if the specified network is using static IP 1622 * @param netId id 1623 * @return {@code true} if using static ip for netId 1624 */ 1625 boolean isUsingStaticIp(int netId) { 1626 WifiConfiguration config = mConfiguredNetworks.getForCurrentUser(netId); 1627 if (config != null && config.getIpAssignment() == IpAssignment.STATIC) { 1628 return true; 1629 } 1630 return false; 1631 } 1632 1633 boolean isEphemeral(int netId) { 1634 WifiConfiguration config = mConfiguredNetworks.getForCurrentUser(netId); 1635 return config != null && config.ephemeral; 1636 } 1637 1638 boolean getMeteredHint(int netId) { 1639 WifiConfiguration config = mConfiguredNetworks.getForCurrentUser(netId); 1640 return config != null && config.meteredHint; 1641 } 1642 1643 /** 1644 * Should be called when a single network configuration is made. 1645 * @param network The network configuration that changed. 1646 * @param reason The reason for the change, should be one of WifiManager.CHANGE_REASON_ADDED, 1647 * WifiManager.CHANGE_REASON_REMOVED, or WifiManager.CHANGE_REASON_CHANGE. 1648 */ 1649 private void sendConfiguredNetworksChangedBroadcast(WifiConfiguration network, 1650 int reason) { 1651 Intent intent = new Intent(WifiManager.CONFIGURED_NETWORKS_CHANGED_ACTION); 1652 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1653 intent.putExtra(WifiManager.EXTRA_MULTIPLE_NETWORKS_CHANGED, false); 1654 intent.putExtra(WifiManager.EXTRA_WIFI_CONFIGURATION, network); 1655 intent.putExtra(WifiManager.EXTRA_CHANGE_REASON, reason); 1656 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1657 } 1658 1659 /** 1660 * Should be called when multiple network configuration changes are made. 1661 */ 1662 private void sendConfiguredNetworksChangedBroadcast() { 1663 Intent intent = new Intent(WifiManager.CONFIGURED_NETWORKS_CHANGED_ACTION); 1664 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1665 intent.putExtra(WifiManager.EXTRA_MULTIPLE_NETWORKS_CHANGED, true); 1666 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1667 } 1668 1669 void loadConfiguredNetworks() { 1670 1671 final Map<String, WifiConfiguration> configs = new HashMap<>(); 1672 final SparseArray<Map<String, String>> networkExtras = new SparseArray<>(); 1673 mLastPriority = mWifiConfigStore.loadNetworks(configs, networkExtras); 1674 1675 readNetworkHistory(configs); 1676 readPasspointConfig(configs, networkExtras); 1677 1678 // We are only now updating mConfiguredNetworks for two reasons: 1679 // 1) The information required to compute configKeys is spread across wpa_supplicant.conf 1680 // and networkHistory.txt. Thus, we had to load both files first. 1681 // 2) mConfiguredNetworks caches a Passpoint network's FQDN the moment the network is added. 1682 // Thus, we had to load the FQDNs first. 1683 mConfiguredNetworks.clear(); 1684 for (Map.Entry<String, WifiConfiguration> entry : configs.entrySet()) { 1685 final String configKey = entry.getKey(); 1686 final WifiConfiguration config = entry.getValue(); 1687 if (!configKey.equals(config.configKey())) { 1688 if (mShowNetworks) { 1689 log("Ignoring network " + config.networkId + " because the configKey loaded " 1690 + "from wpa_supplicant.conf is not valid."); 1691 } 1692 mWifiConfigStore.removeNetwork(config); 1693 continue; 1694 } 1695 mConfiguredNetworks.put(config); 1696 } 1697 1698 readIpAndProxyConfigurations(); 1699 1700 sendConfiguredNetworksChangedBroadcast(); 1701 1702 if (mShowNetworks) { 1703 localLog("loadConfiguredNetworks loaded " + mConfiguredNetworks.sizeForAllUsers() 1704 + " networks (for all users)"); 1705 } 1706 1707 if (mConfiguredNetworks.sizeForAllUsers() == 0) { 1708 // no networks? Lets log if the file contents 1709 logKernelTime(); 1710 logContents(WifiConfigStore.SUPPLICANT_CONFIG_FILE); 1711 logContents(WifiConfigStore.SUPPLICANT_CONFIG_FILE_BACKUP); 1712 logContents(WifiNetworkHistory.NETWORK_HISTORY_CONFIG_FILE); 1713 } 1714 } 1715 1716 private void logContents(String file) { 1717 localLogAndLogcat("--- Begin " + file + " ---"); 1718 BufferedReader reader = null; 1719 try { 1720 reader = new BufferedReader(new FileReader(file)); 1721 for (String line = reader.readLine(); line != null; line = reader.readLine()) { 1722 localLogAndLogcat(line); 1723 } 1724 } catch (FileNotFoundException e) { 1725 localLog("Could not open " + file + ", " + e); 1726 Log.w(TAG, "Could not open " + file + ", " + e); 1727 } catch (IOException e) { 1728 localLog("Could not read " + file + ", " + e); 1729 Log.w(TAG, "Could not read " + file + ", " + e); 1730 } finally { 1731 try { 1732 if (reader != null) { 1733 reader.close(); 1734 } 1735 } catch (IOException e) { 1736 // Just ignore the fact that we couldn't close 1737 } 1738 } 1739 localLogAndLogcat("--- End " + file + " Contents ---"); 1740 } 1741 1742 private Map<String, String> readNetworkVariablesFromSupplicantFile(String key) { 1743 return mWifiConfigStore.readNetworkVariablesFromSupplicantFile(key); 1744 } 1745 1746 private String readNetworkVariableFromSupplicantFile(String configKey, String key) { 1747 long start = SystemClock.elapsedRealtimeNanos(); 1748 Map<String, String> data = mWifiConfigStore.readNetworkVariablesFromSupplicantFile(key); 1749 long end = SystemClock.elapsedRealtimeNanos(); 1750 1751 if (sVDBG) { 1752 localLog("readNetworkVariableFromSupplicantFile configKey=[" + configKey + "] key=" 1753 + key + " duration=" + (long) (end - start)); 1754 } 1755 return data.get(configKey); 1756 } 1757 1758 boolean needsUnlockedKeyStore() { 1759 1760 // Any network using certificates to authenticate access requires 1761 // unlocked key store; unless the certificates can be stored with 1762 // hardware encryption 1763 1764 for (WifiConfiguration config : mConfiguredNetworks.valuesForCurrentUser()) { 1765 1766 if (config.allowedKeyManagement.get(KeyMgmt.WPA_EAP) 1767 && config.allowedKeyManagement.get(KeyMgmt.IEEE8021X)) { 1768 1769 if (needsSoftwareBackedKeyStore(config.enterpriseConfig)) { 1770 return true; 1771 } 1772 } 1773 } 1774 1775 return false; 1776 } 1777 1778 void readPasspointConfig(Map<String, WifiConfiguration> configs, 1779 SparseArray<Map<String, String>> networkExtras) { 1780 List<HomeSP> homeSPs; 1781 try { 1782 homeSPs = mMOManager.loadAllSPs(); 1783 } catch (IOException e) { 1784 loge("Could not read " + PPS_FILE + " : " + e); 1785 return; 1786 } 1787 1788 int matchedConfigs = 0; 1789 for (HomeSP homeSp : homeSPs) { 1790 String fqdn = homeSp.getFQDN(); 1791 Log.d(TAG, "Looking for " + fqdn); 1792 for (WifiConfiguration config : configs.values()) { 1793 Log.d(TAG, "Testing " + config.SSID); 1794 1795 if (config.enterpriseConfig == null) { 1796 continue; 1797 } 1798 final String configFqdn = 1799 networkExtras.get(config.networkId).get(WifiConfigStore.ID_STRING_KEY_FQDN); 1800 if (configFqdn != null && configFqdn.equals(fqdn)) { 1801 Log.d(TAG, "Matched " + configFqdn + " with " + config.networkId); 1802 ++matchedConfigs; 1803 config.FQDN = fqdn; 1804 config.providerFriendlyName = homeSp.getFriendlyName(); 1805 1806 HashSet<Long> roamingConsortiumIds = homeSp.getRoamingConsortiums(); 1807 config.roamingConsortiumIds = new long[roamingConsortiumIds.size()]; 1808 int i = 0; 1809 for (long id : roamingConsortiumIds) { 1810 config.roamingConsortiumIds[i] = id; 1811 i++; 1812 } 1813 IMSIParameter imsiParameter = homeSp.getCredential().getImsi(); 1814 config.enterpriseConfig.setPlmn( 1815 imsiParameter != null ? imsiParameter.toString() : null); 1816 config.enterpriseConfig.setRealm(homeSp.getCredential().getRealm()); 1817 } 1818 } 1819 } 1820 1821 Log.d(TAG, "loaded " + matchedConfigs + " passpoint configs"); 1822 } 1823 1824 public void writePasspointConfigs(final String fqdn, final HomeSP homeSP) { 1825 mWriter.write(PPS_FILE, new DelayedDiskWrite.Writer() { 1826 @Override 1827 public void onWriteCalled(DataOutputStream out) throws IOException { 1828 try { 1829 if (homeSP != null) { 1830 mMOManager.addSP(homeSP); 1831 } else { 1832 mMOManager.removeSP(fqdn); 1833 } 1834 } catch (IOException e) { 1835 loge("Could not write " + PPS_FILE + " : " + e); 1836 } 1837 } 1838 }, false); 1839 } 1840 1841 /** 1842 * Write network history, WifiConfigurations and mScanDetailCaches to file. 1843 */ 1844 private void readNetworkHistory(Map<String, WifiConfiguration> configs) { 1845 mWifiNetworkHistory.readNetworkHistory(configs, 1846 mScanDetailCaches, 1847 mDeletedEphemeralSSIDs); 1848 } 1849 1850 /** 1851 * Read Network history from file, merge it into mConfiguredNetowrks and mScanDetailCaches 1852 */ 1853 public void writeKnownNetworkHistory() { 1854 final List<WifiConfiguration> networks = new ArrayList<WifiConfiguration>(); 1855 for (WifiConfiguration config : mConfiguredNetworks.valuesForAllUsers()) { 1856 networks.add(new WifiConfiguration(config)); 1857 } 1858 mWifiNetworkHistory.writeKnownNetworkHistory(networks, 1859 mScanDetailCaches, 1860 mDeletedEphemeralSSIDs); 1861 } 1862 1863 public void setAndEnableLastSelectedConfiguration(int netId) { 1864 if (sVDBG) { 1865 loge("setLastSelectedConfiguration " + Integer.toString(netId)); 1866 } 1867 if (netId == WifiConfiguration.INVALID_NETWORK_ID) { 1868 mLastSelectedConfiguration = null; 1869 mLastSelectedTimeStamp = -1; 1870 } else { 1871 WifiConfiguration selected = getWifiConfiguration(netId); 1872 if (selected == null) { 1873 mLastSelectedConfiguration = null; 1874 mLastSelectedTimeStamp = -1; 1875 } else { 1876 mLastSelectedConfiguration = selected.configKey(); 1877 mLastSelectedTimeStamp = System.currentTimeMillis(); 1878 updateNetworkSelectionStatus(netId, 1879 WifiConfiguration.NetworkSelectionStatus.NETWORK_SELECTION_ENABLE); 1880 if (sVDBG) { 1881 loge("setLastSelectedConfiguration now: " + mLastSelectedConfiguration); 1882 } 1883 } 1884 } 1885 } 1886 1887 public void setLatestUserSelectedConfiguration(WifiConfiguration network) { 1888 if (network != null) { 1889 mLastSelectedConfiguration = network.configKey(); 1890 mLastSelectedTimeStamp = System.currentTimeMillis(); 1891 } 1892 } 1893 1894 public String getLastSelectedConfiguration() { 1895 return mLastSelectedConfiguration; 1896 } 1897 1898 public long getLastSelectedTimeStamp() { 1899 return mLastSelectedTimeStamp; 1900 } 1901 1902 public boolean isLastSelectedConfiguration(WifiConfiguration config) { 1903 return (mLastSelectedConfiguration != null 1904 && config != null 1905 && mLastSelectedConfiguration.equals(config.configKey())); 1906 } 1907 1908 private void writeIpAndProxyConfigurations() { 1909 final SparseArray<IpConfiguration> networks = new SparseArray<IpConfiguration>(); 1910 for (WifiConfiguration config : mConfiguredNetworks.valuesForAllUsers()) { 1911 if (!config.ephemeral) { 1912 networks.put(configKey(config), config.getIpConfiguration()); 1913 } 1914 } 1915 1916 mIpconfigStore.writeIpAndProxyConfigurations(IP_CONFIG_FILE, networks); 1917 } 1918 1919 private void readIpAndProxyConfigurations() { 1920 SparseArray<IpConfiguration> networks = 1921 mIpconfigStore.readIpAndProxyConfigurations(IP_CONFIG_FILE); 1922 1923 if (networks == null || networks.size() == 0) { 1924 // IpConfigStore.readIpAndProxyConfigurations has already logged an error. 1925 return; 1926 } 1927 1928 for (int i = 0; i < networks.size(); i++) { 1929 int id = networks.keyAt(i); 1930 WifiConfiguration config = mConfiguredNetworks.getByConfigKeyIDForAllUsers(id); 1931 // This is the only place the map is looked up through a (dangerous) hash-value! 1932 1933 if (config == null || config.ephemeral) { 1934 loge("configuration found for missing network, nid=" + id 1935 + ", ignored, networks.size=" + Integer.toString(networks.size())); 1936 } else { 1937 config.setIpConfiguration(networks.valueAt(i)); 1938 } 1939 } 1940 } 1941 1942 private NetworkUpdateResult addOrUpdateNetworkNative(WifiConfiguration config, int uid) { 1943 /* 1944 * If the supplied networkId is INVALID_NETWORK_ID, we create a new empty 1945 * network configuration. Otherwise, the networkId should 1946 * refer to an existing configuration. 1947 */ 1948 1949 if (sVDBG) localLog("addOrUpdateNetworkNative " + config.getPrintableSsid()); 1950 if (config.isPasspoint() && !mMOManager.isEnabled()) { 1951 Log.e(TAG, "Passpoint is not enabled"); 1952 return new NetworkUpdateResult(INVALID_NETWORK_ID); 1953 } 1954 1955 boolean newNetwork = false; 1956 boolean existingMO = false; 1957 WifiConfiguration currentConfig; 1958 // networkId of INVALID_NETWORK_ID means we want to create a new network 1959 if (config.networkId == INVALID_NETWORK_ID) { 1960 // Try to fetch the existing config using configKey 1961 currentConfig = mConfiguredNetworks.getByConfigKeyForCurrentUser(config.configKey()); 1962 if (currentConfig != null) { 1963 config.networkId = currentConfig.networkId; 1964 } else { 1965 if (mMOManager.getHomeSP(config.FQDN) != null) { 1966 loge("addOrUpdateNetworkNative passpoint " + config.FQDN 1967 + " was found, but no network Id"); 1968 existingMO = true; 1969 } 1970 newNetwork = true; 1971 } 1972 } else { 1973 // Fetch the existing config using networkID 1974 currentConfig = mConfiguredNetworks.getForCurrentUser(config.networkId); 1975 } 1976 1977 // originalConfig is used to check for credential and config changes that would cause 1978 // HasEverConnected to be set to false. 1979 WifiConfiguration originalConfig = new WifiConfiguration(currentConfig); 1980 1981 if (!mWifiConfigStore.addOrUpdateNetwork(config, currentConfig)) { 1982 return new NetworkUpdateResult(INVALID_NETWORK_ID); 1983 } 1984 int netId = config.networkId; 1985 String savedConfigKey = config.configKey(); 1986 1987 /* An update of the network variables requires reading them 1988 * back from the supplicant to update mConfiguredNetworks. 1989 * This is because some of the variables (SSID, wep keys & 1990 * passphrases) reflect different values when read back than 1991 * when written. For example, wep key is stored as * irrespective 1992 * of the value sent to the supplicant. 1993 */ 1994 if (currentConfig == null) { 1995 currentConfig = new WifiConfiguration(); 1996 currentConfig.setIpAssignment(IpAssignment.DHCP); 1997 currentConfig.setProxySettings(ProxySettings.NONE); 1998 currentConfig.networkId = netId; 1999 if (config != null) { 2000 // Carry over the creation parameters 2001 currentConfig.selfAdded = config.selfAdded; 2002 currentConfig.didSelfAdd = config.didSelfAdd; 2003 currentConfig.ephemeral = config.ephemeral; 2004 currentConfig.meteredHint = config.meteredHint; 2005 currentConfig.lastConnectUid = config.lastConnectUid; 2006 currentConfig.lastUpdateUid = config.lastUpdateUid; 2007 currentConfig.creatorUid = config.creatorUid; 2008 currentConfig.creatorName = config.creatorName; 2009 currentConfig.lastUpdateName = config.lastUpdateName; 2010 currentConfig.peerWifiConfiguration = config.peerWifiConfiguration; 2011 currentConfig.FQDN = config.FQDN; 2012 currentConfig.providerFriendlyName = config.providerFriendlyName; 2013 currentConfig.roamingConsortiumIds = config.roamingConsortiumIds; 2014 currentConfig.validatedInternetAccess = config.validatedInternetAccess; 2015 currentConfig.numNoInternetAccessReports = config.numNoInternetAccessReports; 2016 currentConfig.updateTime = config.updateTime; 2017 currentConfig.creationTime = config.creationTime; 2018 currentConfig.shared = config.shared; 2019 } 2020 if (DBG) { 2021 log("created new config netId=" + Integer.toString(netId) 2022 + " uid=" + Integer.toString(currentConfig.creatorUid) 2023 + " name=" + currentConfig.creatorName); 2024 } 2025 } 2026 2027 /* save HomeSP object for passpoint networks */ 2028 HomeSP homeSP = null; 2029 2030 if (!existingMO && config.isPasspoint()) { 2031 try { 2032 if (config.updateIdentifier == null) { // Only create an MO for r1 networks 2033 Credential credential = 2034 new Credential(config.enterpriseConfig, mKeyStore, !newNetwork); 2035 HashSet<Long> roamingConsortiumIds = new HashSet<Long>(); 2036 for (Long roamingConsortiumId : config.roamingConsortiumIds) { 2037 roamingConsortiumIds.add(roamingConsortiumId); 2038 } 2039 2040 homeSP = new HomeSP(Collections.<String, Long>emptyMap(), config.FQDN, 2041 roamingConsortiumIds, Collections.<String>emptySet(), 2042 Collections.<Long>emptySet(), Collections.<Long>emptyList(), 2043 config.providerFriendlyName, null, credential); 2044 2045 log("created a homeSP object for " + config.networkId + ":" + config.SSID); 2046 } 2047 2048 /* fix enterprise config properties for passpoint */ 2049 currentConfig.enterpriseConfig.setRealm(config.enterpriseConfig.getRealm()); 2050 currentConfig.enterpriseConfig.setPlmn(config.enterpriseConfig.getPlmn()); 2051 } catch (IOException ioe) { 2052 Log.e(TAG, "Failed to create Passpoint config: " + ioe); 2053 return new NetworkUpdateResult(INVALID_NETWORK_ID); 2054 } 2055 } 2056 2057 if (uid != WifiConfiguration.UNKNOWN_UID) { 2058 if (newNetwork) { 2059 currentConfig.creatorUid = uid; 2060 } else { 2061 currentConfig.lastUpdateUid = uid; 2062 } 2063 } 2064 2065 // For debug, record the time the configuration was modified 2066 StringBuilder sb = new StringBuilder(); 2067 sb.append("time="); 2068 Calendar c = Calendar.getInstance(); 2069 c.setTimeInMillis(System.currentTimeMillis()); 2070 sb.append(String.format("%tm-%td %tH:%tM:%tS.%tL", c, c, c, c, c, c)); 2071 2072 if (newNetwork) { 2073 currentConfig.creationTime = sb.toString(); 2074 } else { 2075 currentConfig.updateTime = sb.toString(); 2076 } 2077 2078 if (currentConfig.status == WifiConfiguration.Status.ENABLED) { 2079 // Make sure autojoin remain in sync with user modifying the configuration 2080 updateNetworkSelectionStatus(currentConfig.networkId, 2081 WifiConfiguration.NetworkSelectionStatus.NETWORK_SELECTION_ENABLE); 2082 } 2083 2084 if (currentConfig.configKey().equals(getLastSelectedConfiguration()) 2085 && currentConfig.ephemeral) { 2086 // Make the config non-ephemeral since the user just explicitly clicked it. 2087 currentConfig.ephemeral = false; 2088 if (DBG) { 2089 log("remove ephemeral status netId=" + Integer.toString(netId) 2090 + " " + currentConfig.configKey()); 2091 } 2092 } 2093 2094 if (sVDBG) log("will read network variables netId=" + Integer.toString(netId)); 2095 2096 readNetworkVariables(currentConfig); 2097 // When we read back the config from wpa_supplicant, some of the default values are set 2098 // which could change the configKey. 2099 if (!savedConfigKey.equals(currentConfig.configKey())) { 2100 if (!mWifiConfigStore.saveNetworkMetadata(currentConfig)) { 2101 loge("Failed to set network metadata. Removing config " + config.networkId); 2102 mWifiConfigStore.removeNetwork(config); 2103 return new NetworkUpdateResult(INVALID_NETWORK_ID); 2104 } 2105 } 2106 2107 boolean passwordChanged = false; 2108 // check passed in config to see if it has more than a password set. 2109 if (!newNetwork && config.preSharedKey != null && !config.preSharedKey.equals("*")) { 2110 passwordChanged = true; 2111 } 2112 2113 if (newNetwork || passwordChanged || wasCredentialChange(originalConfig, currentConfig)) { 2114 currentConfig.getNetworkSelectionStatus().setHasEverConnected(false); 2115 } 2116 2117 // Persist configuration paramaters that are not saved by supplicant. 2118 if (config.lastUpdateName != null) { 2119 currentConfig.lastUpdateName = config.lastUpdateName; 2120 } 2121 if (config.lastUpdateUid != WifiConfiguration.UNKNOWN_UID) { 2122 currentConfig.lastUpdateUid = config.lastUpdateUid; 2123 } 2124 2125 mConfiguredNetworks.put(currentConfig); 2126 2127 NetworkUpdateResult result = 2128 writeIpAndProxyConfigurationsOnChange(currentConfig, config, newNetwork); 2129 result.setIsNewNetwork(newNetwork); 2130 result.setNetworkId(netId); 2131 2132 if (homeSP != null) { 2133 writePasspointConfigs(null, homeSP); 2134 } 2135 2136 saveConfig(); 2137 writeKnownNetworkHistory(); 2138 2139 return result; 2140 } 2141 2142 private boolean wasBitSetUpdated(BitSet originalBitSet, BitSet currentBitSet) { 2143 if (originalBitSet != null && currentBitSet != null) { 2144 // both configs have values set, check if they are different 2145 if (!originalBitSet.equals(currentBitSet)) { 2146 // the BitSets are different 2147 return true; 2148 } 2149 } else if (originalBitSet != null || currentBitSet != null) { 2150 return true; 2151 } 2152 return false; 2153 } 2154 2155 private boolean wasCredentialChange(WifiConfiguration originalConfig, 2156 WifiConfiguration currentConfig) { 2157 // Check if any core WifiConfiguration parameters changed that would impact new connections 2158 if (originalConfig == null) { 2159 return true; 2160 } 2161 2162 if (wasBitSetUpdated(originalConfig.allowedKeyManagement, 2163 currentConfig.allowedKeyManagement)) { 2164 return true; 2165 } 2166 2167 if (wasBitSetUpdated(originalConfig.allowedProtocols, currentConfig.allowedProtocols)) { 2168 return true; 2169 } 2170 2171 if (wasBitSetUpdated(originalConfig.allowedAuthAlgorithms, 2172 currentConfig.allowedAuthAlgorithms)) { 2173 return true; 2174 } 2175 2176 if (wasBitSetUpdated(originalConfig.allowedPairwiseCiphers, 2177 currentConfig.allowedPairwiseCiphers)) { 2178 return true; 2179 } 2180 2181 if (wasBitSetUpdated(originalConfig.allowedGroupCiphers, 2182 currentConfig.allowedGroupCiphers)) { 2183 return true; 2184 } 2185 2186 if (originalConfig.wepKeys != null && currentConfig.wepKeys != null) { 2187 if (originalConfig.wepKeys.length == currentConfig.wepKeys.length) { 2188 for (int i = 0; i < originalConfig.wepKeys.length; i++) { 2189 if (originalConfig.wepKeys[i] != currentConfig.wepKeys[i]) { 2190 return true; 2191 } 2192 } 2193 } else { 2194 return true; 2195 } 2196 } 2197 2198 if (originalConfig.hiddenSSID != currentConfig.hiddenSSID) { 2199 return true; 2200 } 2201 2202 if (originalConfig.requirePMF != currentConfig.requirePMF) { 2203 return true; 2204 } 2205 2206 if (wasEnterpriseConfigChange(originalConfig.enterpriseConfig, 2207 currentConfig.enterpriseConfig)) { 2208 return true; 2209 } 2210 return false; 2211 } 2212 2213 2214 protected boolean wasEnterpriseConfigChange(WifiEnterpriseConfig originalEnterpriseConfig, 2215 WifiEnterpriseConfig currentEnterpriseConfig) { 2216 if (originalEnterpriseConfig != null && currentEnterpriseConfig != null) { 2217 if (originalEnterpriseConfig.getEapMethod() != currentEnterpriseConfig.getEapMethod()) { 2218 return true; 2219 } 2220 2221 if (originalEnterpriseConfig.getPhase2Method() 2222 != currentEnterpriseConfig.getPhase2Method()) { 2223 return true; 2224 } 2225 2226 X509Certificate[] originalCaCerts = originalEnterpriseConfig.getCaCertificates(); 2227 X509Certificate[] currentCaCerts = currentEnterpriseConfig.getCaCertificates(); 2228 2229 if (originalCaCerts != null && currentCaCerts != null) { 2230 if (originalCaCerts.length == currentCaCerts.length) { 2231 for (int i = 0; i < originalCaCerts.length; i++) { 2232 if (!originalCaCerts[i].equals(currentCaCerts[i])) { 2233 return true; 2234 } 2235 } 2236 } else { 2237 // number of aliases is different, so the configs are different 2238 return true; 2239 } 2240 } else { 2241 // one of the enterprise configs may have aliases 2242 if (originalCaCerts != null || currentCaCerts != null) { 2243 return true; 2244 } 2245 } 2246 } else { 2247 // One of the configs may have an enterpriseConfig 2248 if (originalEnterpriseConfig != null || currentEnterpriseConfig != null) { 2249 return true; 2250 } 2251 } 2252 return false; 2253 } 2254 2255 public WifiConfiguration getWifiConfigForHomeSP(HomeSP homeSP) { 2256 WifiConfiguration config = mConfiguredNetworks.getByFQDNForCurrentUser(homeSP.getFQDN()); 2257 if (config == null) { 2258 Log.e(TAG, "Could not find network for homeSP " + homeSP.getFQDN()); 2259 } 2260 return config; 2261 } 2262 2263 public HomeSP getHomeSPForConfig(WifiConfiguration config) { 2264 WifiConfiguration storedConfig = mConfiguredNetworks.getForCurrentUser(config.networkId); 2265 return storedConfig != null && storedConfig.isPasspoint() 2266 ? mMOManager.getHomeSP(storedConfig.FQDN) 2267 : null; 2268 } 2269 2270 public ScanDetailCache getScanDetailCache(WifiConfiguration config) { 2271 if (config == null) return null; 2272 ScanDetailCache cache = mScanDetailCaches.get(config.networkId); 2273 if (cache == null && config.networkId != WifiConfiguration.INVALID_NETWORK_ID) { 2274 cache = new ScanDetailCache(config); 2275 mScanDetailCaches.put(config.networkId, cache); 2276 } 2277 return cache; 2278 } 2279 2280 /** 2281 * This function run thru the Saved WifiConfigurations and check if some should be linked. 2282 * @param config 2283 */ 2284 public void linkConfiguration(WifiConfiguration config) { 2285 if (!WifiConfigurationUtil.isVisibleToAnyProfile(config, 2286 mUserManager.getProfiles(mCurrentUserId))) { 2287 loge("linkConfiguration: Attempting to link config " + config.configKey() 2288 + " that is not visible to the current user."); 2289 return; 2290 } 2291 2292 if (getScanDetailCache(config) != null && getScanDetailCache(config).size() > 6) { 2293 // Ignore configurations with large number of BSSIDs 2294 return; 2295 } 2296 if (!config.allowedKeyManagement.get(KeyMgmt.WPA_PSK)) { 2297 // Only link WPA_PSK config 2298 return; 2299 } 2300 for (WifiConfiguration link : mConfiguredNetworks.valuesForCurrentUser()) { 2301 boolean doLink = false; 2302 2303 if (link.configKey().equals(config.configKey())) { 2304 continue; 2305 } 2306 2307 if (link.ephemeral) { 2308 continue; 2309 } 2310 2311 // Autojoin will be allowed to dynamically jump from a linked configuration 2312 // to another, hence only link configurations that have equivalent level of security 2313 if (!link.allowedKeyManagement.equals(config.allowedKeyManagement)) { 2314 continue; 2315 } 2316 2317 ScanDetailCache linkedScanDetailCache = getScanDetailCache(link); 2318 if (linkedScanDetailCache != null && linkedScanDetailCache.size() > 6) { 2319 // Ignore configurations with large number of BSSIDs 2320 continue; 2321 } 2322 2323 if (config.defaultGwMacAddress != null && link.defaultGwMacAddress != null) { 2324 // If both default GW are known, link only if they are equal 2325 if (config.defaultGwMacAddress.equals(link.defaultGwMacAddress)) { 2326 if (sVDBG) { 2327 loge("linkConfiguration link due to same gw " + link.SSID 2328 + " and " + config.SSID + " GW " + config.defaultGwMacAddress); 2329 } 2330 doLink = true; 2331 } 2332 } else { 2333 // We do not know BOTH default gateways hence we will try to link 2334 // hoping that WifiConfigurations are indeed behind the same gateway. 2335 // once both WifiConfiguration have been tried and thus once both efault gateways 2336 // are known we will revisit the choice of linking them 2337 if ((getScanDetailCache(config) != null) 2338 && (getScanDetailCache(config).size() <= 6)) { 2339 2340 for (String abssid : getScanDetailCache(config).keySet()) { 2341 for (String bbssid : linkedScanDetailCache.keySet()) { 2342 if (sVVDBG) { 2343 loge("linkConfiguration try to link due to DBDC BSSID match " 2344 + link.SSID + " and " + config.SSID + " bssida " + abssid 2345 + " bssidb " + bbssid); 2346 } 2347 if (abssid.regionMatches(true, 0, bbssid, 0, 16)) { 2348 // If first 16 ascii characters of BSSID matches, 2349 // we assume this is a DBDC 2350 doLink = true; 2351 } 2352 } 2353 } 2354 } 2355 } 2356 2357 if (doLink && mOnlyLinkSameCredentialConfigurations) { 2358 String apsk = 2359 readNetworkVariableFromSupplicantFile(link.configKey(), "psk"); 2360 String bpsk = 2361 readNetworkVariableFromSupplicantFile(config.configKey(), "psk"); 2362 if (apsk == null || bpsk == null 2363 || TextUtils.isEmpty(apsk) || TextUtils.isEmpty(apsk) 2364 || apsk.equals("*") || apsk.equals(DELETED_CONFIG_PSK) 2365 || !apsk.equals(bpsk)) { 2366 doLink = false; 2367 } 2368 } 2369 2370 if (doLink) { 2371 if (sVDBG) { 2372 loge("linkConfiguration: will link " + link.configKey() 2373 + " and " + config.configKey()); 2374 } 2375 if (link.linkedConfigurations == null) { 2376 link.linkedConfigurations = new HashMap<String, Integer>(); 2377 } 2378 if (config.linkedConfigurations == null) { 2379 config.linkedConfigurations = new HashMap<String, Integer>(); 2380 } 2381 if (link.linkedConfigurations.get(config.configKey()) == null) { 2382 link.linkedConfigurations.put(config.configKey(), Integer.valueOf(1)); 2383 } 2384 if (config.linkedConfigurations.get(link.configKey()) == null) { 2385 config.linkedConfigurations.put(link.configKey(), Integer.valueOf(1)); 2386 } 2387 } else { 2388 if (link.linkedConfigurations != null 2389 && (link.linkedConfigurations.get(config.configKey()) != null)) { 2390 if (sVDBG) { 2391 loge("linkConfiguration: un-link " + config.configKey() 2392 + " from " + link.configKey()); 2393 } 2394 link.linkedConfigurations.remove(config.configKey()); 2395 } 2396 if (config.linkedConfigurations != null 2397 && (config.linkedConfigurations.get(link.configKey()) != null)) { 2398 if (sVDBG) { 2399 loge("linkConfiguration: un-link " + link.configKey() 2400 + " from " + config.configKey()); 2401 } 2402 config.linkedConfigurations.remove(link.configKey()); 2403 } 2404 } 2405 } 2406 } 2407 2408 public HashSet<Integer> makeChannelList(WifiConfiguration config, int age, boolean restrict) { 2409 if (config == null) { 2410 return null; 2411 } 2412 long now_ms = System.currentTimeMillis(); 2413 2414 HashSet<Integer> channels = new HashSet<Integer>(); 2415 2416 //get channels for this configuration, if there are at least 2 BSSIDs 2417 if (getScanDetailCache(config) == null && config.linkedConfigurations == null) { 2418 return null; 2419 } 2420 2421 if (sVDBG) { 2422 StringBuilder dbg = new StringBuilder(); 2423 dbg.append("makeChannelList age=" + Integer.toString(age) 2424 + " for " + config.configKey() 2425 + " max=" + mMaxNumActiveChannelsForPartialScans); 2426 if (getScanDetailCache(config) != null) { 2427 dbg.append(" bssids=" + getScanDetailCache(config).size()); 2428 } 2429 if (config.linkedConfigurations != null) { 2430 dbg.append(" linked=" + config.linkedConfigurations.size()); 2431 } 2432 loge(dbg.toString()); 2433 } 2434 2435 int numChannels = 0; 2436 if (getScanDetailCache(config) != null && getScanDetailCache(config).size() > 0) { 2437 for (ScanDetail scanDetail : getScanDetailCache(config).values()) { 2438 ScanResult result = scanDetail.getScanResult(); 2439 //TODO : cout active and passive channels separately 2440 if (numChannels > mMaxNumActiveChannelsForPartialScans.get()) { 2441 break; 2442 } 2443 if (sVDBG) { 2444 boolean test = (now_ms - result.seen) < age; 2445 loge("has " + result.BSSID + " freq=" + Integer.toString(result.frequency) 2446 + " age=" + Long.toString(now_ms - result.seen) + " ?=" + test); 2447 } 2448 if (((now_ms - result.seen) < age)/*||(!restrict || result.is24GHz())*/) { 2449 channels.add(result.frequency); 2450 numChannels++; 2451 } 2452 } 2453 } 2454 2455 //get channels for linked configurations 2456 if (config.linkedConfigurations != null) { 2457 for (String key : config.linkedConfigurations.keySet()) { 2458 WifiConfiguration linked = getWifiConfiguration(key); 2459 if (linked == null) { 2460 continue; 2461 } 2462 if (getScanDetailCache(linked) == null) { 2463 continue; 2464 } 2465 for (ScanDetail scanDetail : getScanDetailCache(linked).values()) { 2466 ScanResult result = scanDetail.getScanResult(); 2467 if (sVDBG) { 2468 loge("has link: " + result.BSSID 2469 + " freq=" + Integer.toString(result.frequency) 2470 + " age=" + Long.toString(now_ms - result.seen)); 2471 } 2472 if (numChannels > mMaxNumActiveChannelsForPartialScans.get()) { 2473 break; 2474 } 2475 if (((now_ms - result.seen) < age)/*||(!restrict || result.is24GHz())*/) { 2476 channels.add(result.frequency); 2477 numChannels++; 2478 } 2479 } 2480 } 2481 } 2482 return channels; 2483 } 2484 2485 private Map<HomeSP, PasspointMatch> matchPasspointNetworks(ScanDetail scanDetail) { 2486 if (!mMOManager.isConfigured()) { 2487 if (mEnableOsuQueries) { 2488 NetworkDetail networkDetail = scanDetail.getNetworkDetail(); 2489 List<Constants.ANQPElementType> querySet = 2490 ANQPFactory.buildQueryList(networkDetail, false, true); 2491 2492 if (networkDetail.queriable(querySet)) { 2493 querySet = mAnqpCache.initiate(networkDetail, querySet); 2494 if (querySet != null) { 2495 mSupplicantBridge.startANQP(scanDetail, querySet); 2496 } 2497 updateAnqpCache(scanDetail, networkDetail.getANQPElements()); 2498 } 2499 } 2500 return null; 2501 } 2502 NetworkDetail networkDetail = scanDetail.getNetworkDetail(); 2503 if (!networkDetail.hasInterworking()) { 2504 return null; 2505 } 2506 updateAnqpCache(scanDetail, networkDetail.getANQPElements()); 2507 2508 Map<HomeSP, PasspointMatch> matches = matchNetwork(scanDetail, true); 2509 Log.d(Utils.hs2LogTag(getClass()), scanDetail.getSSID() 2510 + " pass 1 matches: " + toMatchString(matches)); 2511 return matches; 2512 } 2513 2514 private Map<HomeSP, PasspointMatch> matchNetwork(ScanDetail scanDetail, boolean query) { 2515 NetworkDetail networkDetail = scanDetail.getNetworkDetail(); 2516 2517 ANQPData anqpData = mAnqpCache.getEntry(networkDetail); 2518 2519 Map<Constants.ANQPElementType, ANQPElement> anqpElements = 2520 anqpData != null ? anqpData.getANQPElements() : null; 2521 2522 boolean queried = !query; 2523 Collection<HomeSP> homeSPs = mMOManager.getLoadedSPs().values(); 2524 Map<HomeSP, PasspointMatch> matches = new HashMap<>(homeSPs.size()); 2525 Log.d(Utils.hs2LogTag(getClass()), "match nwk " + scanDetail.toKeyString() 2526 + ", anqp " + (anqpData != null ? "present" : "missing") 2527 + ", query " + query + ", home sps: " + homeSPs.size()); 2528 2529 for (HomeSP homeSP : homeSPs) { 2530 PasspointMatch match = homeSP.match(networkDetail, anqpElements, mSIMAccessor); 2531 2532 Log.d(Utils.hs2LogTag(getClass()), " -- " 2533 + homeSP.getFQDN() + ": match " + match + ", queried " + queried); 2534 2535 if ((match == PasspointMatch.Incomplete || mEnableOsuQueries) && !queried) { 2536 boolean matchSet = match == PasspointMatch.Incomplete; 2537 boolean osu = mEnableOsuQueries; 2538 List<Constants.ANQPElementType> querySet = 2539 ANQPFactory.buildQueryList(networkDetail, matchSet, osu); 2540 if (networkDetail.queriable(querySet)) { 2541 querySet = mAnqpCache.initiate(networkDetail, querySet); 2542 if (querySet != null) { 2543 mSupplicantBridge.startANQP(scanDetail, querySet); 2544 } 2545 } 2546 queried = true; 2547 } 2548 matches.put(homeSP, match); 2549 } 2550 return matches; 2551 } 2552 2553 public Map<Constants.ANQPElementType, ANQPElement> getANQPData(NetworkDetail network) { 2554 ANQPData data = mAnqpCache.getEntry(network); 2555 return data != null ? data.getANQPElements() : null; 2556 } 2557 2558 public SIMAccessor getSIMAccessor() { 2559 return mSIMAccessor; 2560 } 2561 2562 public void notifyANQPDone(Long bssid, boolean success) { 2563 mSupplicantBridge.notifyANQPDone(bssid, success); 2564 } 2565 2566 public void notifyIconReceived(IconEvent iconEvent) { 2567 Intent intent = new Intent(WifiManager.PASSPOINT_ICON_RECEIVED_ACTION); 2568 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2569 intent.putExtra(WifiManager.EXTRA_PASSPOINT_ICON_BSSID, iconEvent.getBSSID()); 2570 intent.putExtra(WifiManager.EXTRA_PASSPOINT_ICON_FILE, iconEvent.getFileName()); 2571 try { 2572 intent.putExtra(WifiManager.EXTRA_PASSPOINT_ICON_DATA, 2573 mSupplicantBridge.retrieveIcon(iconEvent)); 2574 } catch (IOException ioe) { 2575 /* Simply omit the icon data as a failure indication */ 2576 } 2577 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 2578 2579 } 2580 2581 private void updateAnqpCache(ScanDetail scanDetail, 2582 Map<Constants.ANQPElementType, ANQPElement> anqpElements) { 2583 NetworkDetail networkDetail = scanDetail.getNetworkDetail(); 2584 2585 if (anqpElements == null) { 2586 // Try to pull cached data if query failed. 2587 ANQPData data = mAnqpCache.getEntry(networkDetail); 2588 if (data != null) { 2589 scanDetail.propagateANQPInfo(data.getANQPElements()); 2590 } 2591 return; 2592 } 2593 2594 mAnqpCache.update(networkDetail, anqpElements); 2595 } 2596 2597 private static String toMatchString(Map<HomeSP, PasspointMatch> matches) { 2598 StringBuilder sb = new StringBuilder(); 2599 for (Map.Entry<HomeSP, PasspointMatch> entry : matches.entrySet()) { 2600 sb.append(' ').append(entry.getKey().getFQDN()).append("->").append(entry.getValue()); 2601 } 2602 return sb.toString(); 2603 } 2604 2605 private void cacheScanResultForPasspointConfigs(ScanDetail scanDetail, 2606 Map<HomeSP, PasspointMatch> matches, 2607 List<WifiConfiguration> associatedWifiConfigurations) { 2608 2609 for (Map.Entry<HomeSP, PasspointMatch> entry : matches.entrySet()) { 2610 PasspointMatch match = entry.getValue(); 2611 if (match == PasspointMatch.HomeProvider || match == PasspointMatch.RoamingProvider) { 2612 WifiConfiguration config = getWifiConfigForHomeSP(entry.getKey()); 2613 if (config != null) { 2614 cacheScanResultForConfig(config, scanDetail, entry.getValue()); 2615 if (associatedWifiConfigurations != null) { 2616 associatedWifiConfigurations.add(config); 2617 } 2618 } else { 2619 Log.w(Utils.hs2LogTag(getClass()), "Failed to find config for '" 2620 + entry.getKey().getFQDN() + "'"); 2621 /* perhaps the configuration was deleted?? */ 2622 } 2623 } 2624 } 2625 } 2626 2627 private void cacheScanResultForConfig( 2628 WifiConfiguration config, ScanDetail scanDetail, PasspointMatch passpointMatch) { 2629 2630 ScanResult scanResult = scanDetail.getScanResult(); 2631 2632 ScanDetailCache scanDetailCache = getScanDetailCache(config); 2633 if (scanDetailCache == null) { 2634 Log.w(TAG, "Could not allocate scan cache for " + config.SSID); 2635 return; 2636 } 2637 2638 // Adding a new BSSID 2639 ScanResult result = scanDetailCache.get(scanResult.BSSID); 2640 if (result != null) { 2641 // transfer the black list status 2642 scanResult.blackListTimestamp = result.blackListTimestamp; 2643 scanResult.numIpConfigFailures = result.numIpConfigFailures; 2644 scanResult.numConnection = result.numConnection; 2645 scanResult.isAutoJoinCandidate = result.isAutoJoinCandidate; 2646 } 2647 2648 if (config.ephemeral) { 2649 // For an ephemeral Wi-Fi config, the ScanResult should be considered 2650 // untrusted. 2651 scanResult.untrusted = true; 2652 } 2653 2654 if (scanDetailCache.size() > (MAX_NUM_SCAN_CACHE_ENTRIES + 64)) { 2655 long now_dbg = 0; 2656 if (sVVDBG) { 2657 loge(" Will trim config " + config.configKey() 2658 + " size " + scanDetailCache.size()); 2659 2660 for (ScanDetail sd : scanDetailCache.values()) { 2661 loge(" " + sd.getBSSIDString() + " " + sd.getSeen()); 2662 } 2663 now_dbg = SystemClock.elapsedRealtimeNanos(); 2664 } 2665 // Trim the scan result cache to MAX_NUM_SCAN_CACHE_ENTRIES entries max 2666 // Since this operation is expensive, make sure it is not performed 2667 // until the cache has grown significantly above the trim treshold 2668 scanDetailCache.trim(MAX_NUM_SCAN_CACHE_ENTRIES); 2669 if (sVVDBG) { 2670 long diff = SystemClock.elapsedRealtimeNanos() - now_dbg; 2671 loge(" Finished trimming config, time(ns) " + diff); 2672 for (ScanDetail sd : scanDetailCache.values()) { 2673 loge(" " + sd.getBSSIDString() + " " + sd.getSeen()); 2674 } 2675 } 2676 } 2677 2678 // Add the scan result to this WifiConfiguration 2679 if (passpointMatch != null) { 2680 scanDetailCache.put(scanDetail, passpointMatch, getHomeSPForConfig(config)); 2681 } else { 2682 scanDetailCache.put(scanDetail); 2683 } 2684 2685 // Since we added a scan result to this configuration, re-attempt linking 2686 linkConfiguration(config); 2687 } 2688 2689 private boolean isEncryptionWep(String encryption) { 2690 return encryption.contains("WEP"); 2691 } 2692 2693 private boolean isEncryptionPsk(String encryption) { 2694 return encryption.contains("PSK"); 2695 } 2696 2697 private boolean isEncryptionEap(String encryption) { 2698 return encryption.contains("EAP"); 2699 } 2700 2701 public boolean isOpenNetwork(String encryption) { 2702 if (!isEncryptionWep(encryption) && !isEncryptionPsk(encryption) 2703 && !isEncryptionEap(encryption)) { 2704 return true; 2705 } 2706 return false; 2707 } 2708 2709 public boolean isOpenNetwork(ScanResult scan) { 2710 String scanResultEncrypt = scan.capabilities; 2711 return isOpenNetwork(scanResultEncrypt); 2712 } 2713 2714 public boolean isOpenNetwork(WifiConfiguration config) { 2715 String configEncrypt = config.configKey(); 2716 return isOpenNetwork(configEncrypt); 2717 } 2718 2719 /** 2720 * create a mapping between the scandetail and the Wificonfiguration it associated with 2721 * because Passpoint, one BSSID can associated with multiple SSIDs 2722 * @param scanDetail input a scanDetail from the scan result 2723 * @return List<WifiConfiguration> a list of WifiConfigurations associated to this scanDetail 2724 */ 2725 public List<WifiConfiguration> updateSavedNetworkWithNewScanDetail(ScanDetail scanDetail) { 2726 2727 ScanResult scanResult = scanDetail.getScanResult(); 2728 NetworkDetail networkDetail = scanDetail.getNetworkDetail(); 2729 List<WifiConfiguration> associatedWifiConfigurations = new ArrayList<WifiConfiguration>(); 2730 2731 if (scanResult == null) { 2732 return null; 2733 } 2734 2735 String ssid = "\"" + scanResult.SSID + "\""; 2736 2737 if (networkDetail.hasInterworking()) { 2738 Map<HomeSP, PasspointMatch> matches = matchPasspointNetworks(scanDetail); 2739 if (matches != null) { 2740 cacheScanResultForPasspointConfigs(scanDetail, matches, 2741 associatedWifiConfigurations); 2742 //Do not return here. A BSSID can belong to both passpoint network and non-passpoint 2743 //Network 2744 } 2745 } 2746 2747 for (WifiConfiguration config : mConfiguredNetworks.valuesForCurrentUser()) { 2748 boolean found = false; 2749 if (config.SSID == null || !config.SSID.equals(ssid)) { 2750 continue; 2751 } 2752 if (DBG) { 2753 localLog("updateSavedNetworkWithNewScanDetail(): try " + config.configKey() 2754 + " SSID=" + config.SSID + " " + scanResult.SSID + " " 2755 + scanResult.capabilities); 2756 } 2757 2758 String scanResultEncrypt = scanResult.capabilities; 2759 String configEncrypt = config.configKey(); 2760 if (isEncryptionWep(scanResultEncrypt) && isEncryptionWep(configEncrypt) 2761 || (isEncryptionPsk(scanResultEncrypt) && isEncryptionPsk(configEncrypt)) 2762 || (isEncryptionEap(scanResultEncrypt) && isEncryptionEap(configEncrypt)) 2763 || (isOpenNetwork(scanResultEncrypt) && isOpenNetwork(configEncrypt))) { 2764 found = true; 2765 } 2766 2767 if (found) { 2768 cacheScanResultForConfig(config, scanDetail, null); 2769 associatedWifiConfigurations.add(config); 2770 } 2771 } 2772 2773 if (associatedWifiConfigurations.size() == 0) { 2774 return null; 2775 } else { 2776 return associatedWifiConfigurations; 2777 } 2778 } 2779 2780 /** 2781 * Handles the switch to a different foreground user: 2782 * - Removes all ephemeral networks 2783 * - Disables private network configurations belonging to the previous foreground user 2784 * - Enables private network configurations belonging to the new foreground user 2785 * 2786 * @param userId The identifier of the new foreground user, after the switch. 2787 * 2788 * TODO(b/26785736): Terminate background users if the new foreground user has one or more 2789 * private network configurations. 2790 */ 2791 public void handleUserSwitch(int userId) { 2792 mCurrentUserId = userId; 2793 Set<WifiConfiguration> ephemeralConfigs = new HashSet<>(); 2794 for (WifiConfiguration config : mConfiguredNetworks.valuesForCurrentUser()) { 2795 if (config.ephemeral) { 2796 ephemeralConfigs.add(config); 2797 } 2798 } 2799 if (!ephemeralConfigs.isEmpty()) { 2800 for (WifiConfiguration config : ephemeralConfigs) { 2801 removeConfigWithoutBroadcast(config); 2802 } 2803 saveConfig(); 2804 writeKnownNetworkHistory(); 2805 } 2806 2807 final List<WifiConfiguration> hiddenConfigurations = 2808 mConfiguredNetworks.handleUserSwitch(mCurrentUserId); 2809 for (WifiConfiguration network : hiddenConfigurations) { 2810 disableNetworkNative(network); 2811 } 2812 enableAllNetworks(); 2813 2814 // TODO(b/26785746): This broadcast is unnecessary if either of the following is true: 2815 // * The user switch did not change the list of visible networks 2816 // * The user switch revealed additional networks that were temporarily disabled and got 2817 // re-enabled now (because enableAllNetworks() sent the same broadcast already). 2818 sendConfiguredNetworksChangedBroadcast(); 2819 } 2820 2821 public int getCurrentUserId() { 2822 return mCurrentUserId; 2823 } 2824 2825 public boolean isCurrentUserProfile(int userId) { 2826 if (userId == mCurrentUserId) { 2827 return true; 2828 } 2829 final UserInfo parent = mUserManager.getProfileParent(userId); 2830 return parent != null && parent.id == mCurrentUserId; 2831 } 2832 2833 /* Compare current and new configuration and write to file on change */ 2834 private NetworkUpdateResult writeIpAndProxyConfigurationsOnChange( 2835 WifiConfiguration currentConfig, 2836 WifiConfiguration newConfig, 2837 boolean isNewNetwork) { 2838 boolean ipChanged = false; 2839 boolean proxyChanged = false; 2840 2841 switch (newConfig.getIpAssignment()) { 2842 case STATIC: 2843 if (currentConfig.getIpAssignment() != newConfig.getIpAssignment()) { 2844 ipChanged = true; 2845 } else { 2846 ipChanged = !Objects.equals( 2847 currentConfig.getStaticIpConfiguration(), 2848 newConfig.getStaticIpConfiguration()); 2849 } 2850 break; 2851 case DHCP: 2852 if (currentConfig.getIpAssignment() != newConfig.getIpAssignment()) { 2853 ipChanged = true; 2854 } 2855 break; 2856 case UNASSIGNED: 2857 /* Ignore */ 2858 break; 2859 default: 2860 loge("Ignore invalid ip assignment during write"); 2861 break; 2862 } 2863 2864 switch (newConfig.getProxySettings()) { 2865 case STATIC: 2866 case PAC: 2867 ProxyInfo newHttpProxy = newConfig.getHttpProxy(); 2868 ProxyInfo currentHttpProxy = currentConfig.getHttpProxy(); 2869 2870 if (newHttpProxy != null) { 2871 proxyChanged = !newHttpProxy.equals(currentHttpProxy); 2872 } else { 2873 proxyChanged = (currentHttpProxy != null); 2874 } 2875 break; 2876 case NONE: 2877 if (currentConfig.getProxySettings() != newConfig.getProxySettings()) { 2878 proxyChanged = true; 2879 } 2880 break; 2881 case UNASSIGNED: 2882 /* Ignore */ 2883 break; 2884 default: 2885 loge("Ignore invalid proxy configuration during write"); 2886 break; 2887 } 2888 2889 if (ipChanged) { 2890 currentConfig.setIpAssignment(newConfig.getIpAssignment()); 2891 currentConfig.setStaticIpConfiguration(newConfig.getStaticIpConfiguration()); 2892 log("IP config changed SSID = " + currentConfig.SSID); 2893 if (currentConfig.getStaticIpConfiguration() != null) { 2894 log(" static configuration: " 2895 + currentConfig.getStaticIpConfiguration().toString()); 2896 } 2897 } 2898 2899 if (proxyChanged) { 2900 currentConfig.setProxySettings(newConfig.getProxySettings()); 2901 currentConfig.setHttpProxy(newConfig.getHttpProxy()); 2902 log("proxy changed SSID = " + currentConfig.SSID); 2903 if (currentConfig.getHttpProxy() != null) { 2904 log(" proxyProperties: " + currentConfig.getHttpProxy().toString()); 2905 } 2906 } 2907 2908 if (ipChanged || proxyChanged || isNewNetwork) { 2909 if (sVDBG) { 2910 logd("writeIpAndProxyConfigurationsOnChange: " + currentConfig.SSID + " -> " 2911 + newConfig.SSID + " path: " + IP_CONFIG_FILE); 2912 } 2913 writeIpAndProxyConfigurations(); 2914 } 2915 return new NetworkUpdateResult(ipChanged, proxyChanged); 2916 } 2917 2918 /** 2919 * Read the variables from the supplicant daemon that are needed to 2920 * fill in the WifiConfiguration object. 2921 * 2922 * @param config the {@link WifiConfiguration} object to be filled in. 2923 */ 2924 private void readNetworkVariables(WifiConfiguration config) { 2925 mWifiConfigStore.readNetworkVariables(config); 2926 } 2927 2928 /* return the allowed key management based on a scan result */ 2929 2930 public WifiConfiguration wifiConfigurationFromScanResult(ScanResult result) { 2931 2932 WifiConfiguration config = new WifiConfiguration(); 2933 2934 config.SSID = "\"" + result.SSID + "\""; 2935 2936 if (sVDBG) { 2937 loge("WifiConfiguration from scan results " 2938 + config.SSID + " cap " + result.capabilities); 2939 } 2940 2941 if (result.capabilities.contains("PSK") || result.capabilities.contains("EAP") 2942 || result.capabilities.contains("WEP")) { 2943 if (result.capabilities.contains("PSK")) { 2944 config.allowedKeyManagement.set(KeyMgmt.WPA_PSK); 2945 } 2946 2947 if (result.capabilities.contains("EAP")) { 2948 config.allowedKeyManagement.set(KeyMgmt.WPA_EAP); 2949 config.allowedKeyManagement.set(KeyMgmt.IEEE8021X); 2950 } 2951 2952 if (result.capabilities.contains("WEP")) { 2953 config.allowedKeyManagement.set(KeyMgmt.NONE); 2954 config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN); 2955 config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.SHARED); 2956 } 2957 } else { 2958 config.allowedKeyManagement.set(KeyMgmt.NONE); 2959 } 2960 2961 return config; 2962 } 2963 2964 public WifiConfiguration wifiConfigurationFromScanResult(ScanDetail scanDetail) { 2965 ScanResult result = scanDetail.getScanResult(); 2966 return wifiConfigurationFromScanResult(result); 2967 } 2968 2969 /* Returns a unique for a given configuration */ 2970 private static int configKey(WifiConfiguration config) { 2971 String key = config.configKey(); 2972 return key.hashCode(); 2973 } 2974 2975 void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2976 pw.println("Dump of WifiConfigManager"); 2977 pw.println("mLastPriority " + mLastPriority); 2978 pw.println("Configured networks"); 2979 for (WifiConfiguration conf : getAllConfiguredNetworks()) { 2980 pw.println(conf); 2981 } 2982 pw.println(); 2983 if (mLostConfigsDbg != null && mLostConfigsDbg.size() > 0) { 2984 pw.println("LostConfigs: "); 2985 for (String s : mLostConfigsDbg) { 2986 pw.println(s); 2987 } 2988 } 2989 if (mLocalLog != null) { 2990 pw.println("WifiConfigManager - Log Begin ----"); 2991 mLocalLog.dump(fd, pw, args); 2992 pw.println("WifiConfigManager - Log End ----"); 2993 } 2994 if (mMOManager.isConfigured()) { 2995 pw.println("Begin dump of ANQP Cache"); 2996 mAnqpCache.dump(pw); 2997 pw.println("End dump of ANQP Cache"); 2998 } 2999 } 3000 3001 public String getConfigFile() { 3002 return IP_CONFIG_FILE; 3003 } 3004 3005 protected void logd(String s) { 3006 Log.d(TAG, s); 3007 } 3008 3009 protected void loge(String s) { 3010 loge(s, false); 3011 } 3012 3013 protected void loge(String s, boolean stack) { 3014 if (stack) { 3015 Log.e(TAG, s + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3016 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3017 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3018 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3019 } else { 3020 Log.e(TAG, s); 3021 } 3022 } 3023 3024 private void logKernelTime() { 3025 long kernelTimeMs = System.nanoTime() / (1000 * 1000); 3026 StringBuilder builder = new StringBuilder(); 3027 builder.append("kernel time = ") 3028 .append(kernelTimeMs / 1000) 3029 .append(".") 3030 .append(kernelTimeMs % 1000) 3031 .append("\n"); 3032 localLog(builder.toString()); 3033 } 3034 3035 protected void log(String s) { 3036 Log.d(TAG, s); 3037 } 3038 3039 private void localLog(String s) { 3040 if (mLocalLog != null) { 3041 mLocalLog.log(s); 3042 } 3043 } 3044 3045 private void localLogAndLogcat(String s) { 3046 localLog(s); 3047 Log.d(TAG, s); 3048 } 3049 3050 private void localLogNetwork(String s, int netId) { 3051 if (mLocalLog == null) { 3052 return; 3053 } 3054 3055 WifiConfiguration config; 3056 synchronized (mConfiguredNetworks) { // !!! Useless synchronization 3057 config = mConfiguredNetworks.getForAllUsers(netId); 3058 } 3059 3060 if (config != null) { 3061 mLocalLog.log(s + " " + config.getPrintableSsid() + " " + netId 3062 + " status=" + config.status 3063 + " key=" + config.configKey()); 3064 } else { 3065 mLocalLog.log(s + " " + netId); 3066 } 3067 } 3068 3069 static boolean needsSoftwareBackedKeyStore(WifiEnterpriseConfig config) { 3070 String client = config.getClientCertificateAlias(); 3071 if (!TextUtils.isEmpty(client)) { 3072 // a valid client certificate is configured 3073 3074 // BUGBUG: keyStore.get() never returns certBytes; because it is not 3075 // taking WIFI_UID as a parameter. It always looks for certificate 3076 // with SYSTEM_UID, and never finds any Wifi certificates. Assuming that 3077 // all certificates need software keystore until we get the get() API 3078 // fixed. 3079 3080 return true; 3081 } 3082 3083 /* 3084 try { 3085 3086 if (DBG) Slog.d(TAG, "Loading client certificate " + Credentials 3087 .USER_CERTIFICATE + client); 3088 3089 CertificateFactory factory = CertificateFactory.getInstance("X.509"); 3090 if (factory == null) { 3091 Slog.e(TAG, "Error getting certificate factory"); 3092 return; 3093 } 3094 3095 byte[] certBytes = keyStore.get(Credentials.USER_CERTIFICATE + client); 3096 if (certBytes != null) { 3097 Certificate cert = (X509Certificate) factory.generateCertificate( 3098 new ByteArrayInputStream(certBytes)); 3099 3100 if (cert != null) { 3101 mNeedsSoftwareKeystore = hasHardwareBackedKey(cert); 3102 3103 if (DBG) Slog.d(TAG, "Loaded client certificate " + Credentials 3104 .USER_CERTIFICATE + client); 3105 if (DBG) Slog.d(TAG, "It " + (mNeedsSoftwareKeystore ? "needs" : 3106 "does not need" ) + " software key store"); 3107 } else { 3108 Slog.d(TAG, "could not generate certificate"); 3109 } 3110 } else { 3111 Slog.e(TAG, "Could not load client certificate " + Credentials 3112 .USER_CERTIFICATE + client); 3113 mNeedsSoftwareKeystore = true; 3114 } 3115 3116 } catch(CertificateException e) { 3117 Slog.e(TAG, "Could not read certificates"); 3118 mCaCert = null; 3119 mClientCertificate = null; 3120 } 3121 */ 3122 3123 return false; 3124 } 3125 3126 /** 3127 * Checks if the network is a sim config. 3128 * @param config Config corresponding to the network. 3129 * @return true if it is a sim config, false otherwise. 3130 */ 3131 public boolean isSimConfig(WifiConfiguration config) { 3132 return mWifiConfigStore.isSimConfig(config); 3133 } 3134 3135 /** 3136 * Resets all sim networks from the network list. 3137 */ 3138 public void resetSimNetworks() { 3139 mWifiConfigStore.resetSimNetworks(mConfiguredNetworks.valuesForCurrentUser()); 3140 } 3141 3142 boolean isNetworkConfigured(WifiConfiguration config) { 3143 // Check if either we have a network Id or a WifiConfiguration 3144 // matching the one we are trying to add. 3145 3146 if (config.networkId != INVALID_NETWORK_ID) { 3147 return (mConfiguredNetworks.getForCurrentUser(config.networkId) != null); 3148 } 3149 3150 return (mConfiguredNetworks.getByConfigKeyForCurrentUser(config.configKey()) != null); 3151 } 3152 3153 /** 3154 * Checks if uid has access to modify the configuration corresponding to networkId. 3155 * 3156 * The conditions checked are, in descending priority order: 3157 * - Disallow modification if the the configuration is not visible to the uid. 3158 * - Allow modification if the uid represents the Device Owner app. 3159 * - Allow modification if both of the following are true: 3160 * - The uid represents the configuration's creator or an app holding OVERRIDE_CONFIG_WIFI. 3161 * - The modification is only for administrative annotation (e.g. when connecting) or the 3162 * configuration is not lockdown eligible (which currently means that it was not last 3163 * updated by the DO). 3164 * - Allow modification if configuration lockdown is explicitly disabled and the uid represents 3165 * an app holding OVERRIDE_CONFIG_WIFI. 3166 * - In all other cases, disallow modification. 3167 */ 3168 boolean canModifyNetwork(int uid, int networkId, boolean onlyAnnotate) { 3169 WifiConfiguration config = mConfiguredNetworks.getForCurrentUser(networkId); 3170 3171 if (config == null) { 3172 loge("canModifyNetwork: cannot find config networkId " + networkId); 3173 return false; 3174 } 3175 3176 final DevicePolicyManagerInternal dpmi = LocalServices.getService( 3177 DevicePolicyManagerInternal.class); 3178 3179 final boolean isUidDeviceOwner = dpmi != null && dpmi.isActiveAdminWithPolicy(uid, 3180 DeviceAdminInfo.USES_POLICY_DEVICE_OWNER); 3181 3182 if (isUidDeviceOwner) { 3183 return true; 3184 } 3185 3186 final boolean isCreator = (config.creatorUid == uid); 3187 3188 if (onlyAnnotate) { 3189 return isCreator || checkConfigOverridePermission(uid); 3190 } 3191 3192 // Check if device has DPM capability. If it has and dpmi is still null, then we 3193 // treat this case with suspicion and bail out. 3194 if (mContext.getPackageManager().hasSystemFeature(PackageManager.FEATURE_DEVICE_ADMIN) 3195 && dpmi == null) { 3196 return false; 3197 } 3198 3199 // WiFi config lockdown related logic. At this point we know uid NOT to be a Device Owner. 3200 3201 final boolean isConfigEligibleForLockdown = dpmi != null && dpmi.isActiveAdminWithPolicy( 3202 config.creatorUid, DeviceAdminInfo.USES_POLICY_DEVICE_OWNER); 3203 if (!isConfigEligibleForLockdown) { 3204 return isCreator || checkConfigOverridePermission(uid); 3205 } 3206 3207 final ContentResolver resolver = mContext.getContentResolver(); 3208 final boolean isLockdownFeatureEnabled = Settings.Global.getInt(resolver, 3209 Settings.Global.WIFI_DEVICE_OWNER_CONFIGS_LOCKDOWN, 0) != 0; 3210 return !isLockdownFeatureEnabled && checkConfigOverridePermission(uid); 3211 } 3212 3213 /** 3214 * Checks if uid has access to modify config. 3215 */ 3216 boolean canModifyNetwork(int uid, WifiConfiguration config, boolean onlyAnnotate) { 3217 if (config == null) { 3218 loge("canModifyNetowrk recieved null configuration"); 3219 return false; 3220 } 3221 3222 // Resolve the correct network id. 3223 int netid; 3224 if (config.networkId != INVALID_NETWORK_ID) { 3225 netid = config.networkId; 3226 } else { 3227 WifiConfiguration test = 3228 mConfiguredNetworks.getByConfigKeyForCurrentUser(config.configKey()); 3229 if (test == null) { 3230 return false; 3231 } else { 3232 netid = test.networkId; 3233 } 3234 } 3235 3236 return canModifyNetwork(uid, netid, onlyAnnotate); 3237 } 3238 3239 boolean checkConfigOverridePermission(int uid) { 3240 try { 3241 return (mFacade.checkUidPermission( 3242 android.Manifest.permission.OVERRIDE_WIFI_CONFIG, uid) 3243 == PackageManager.PERMISSION_GRANTED); 3244 } catch (RemoteException e) { 3245 return false; 3246 } 3247 } 3248 3249 /** called when CS ask WiFistateMachine to disconnect the current network 3250 * because the score is bad. 3251 */ 3252 void handleBadNetworkDisconnectReport(int netId, WifiInfo info) { 3253 /* TODO verify the bad network is current */ 3254 WifiConfiguration config = mConfiguredNetworks.getForCurrentUser(netId); 3255 if (config != null) { 3256 if ((info.is24GHz() && info.getRssi() 3257 <= WifiQualifiedNetworkSelector.QUALIFIED_RSSI_24G_BAND) 3258 || (info.is5GHz() && info.getRssi() 3259 <= WifiQualifiedNetworkSelector.QUALIFIED_RSSI_5G_BAND)) { 3260 // We do not block due to bad RSSI since network selection should not select bad 3261 // RSSI candidate 3262 } else { 3263 // We got disabled but RSSI is good, so disable hard 3264 updateNetworkSelectionStatus(config, 3265 WifiConfiguration.NetworkSelectionStatus.DISABLED_BAD_LINK); 3266 } 3267 } 3268 // Record last time Connectivity Service switched us away from WiFi and onto Cell 3269 mLastUnwantedNetworkDisconnectTimestamp = System.currentTimeMillis(); 3270 } 3271 3272 int getMaxDhcpRetries() { 3273 return mFacade.getIntegerSetting(mContext, 3274 Settings.Global.WIFI_MAX_DHCP_RETRY_COUNT, 3275 DEFAULT_MAX_DHCP_RETRIES); 3276 } 3277 3278 void clearBssidBlacklist() { 3279 mWifiConfigStore.clearBssidBlacklist(); 3280 } 3281 3282 void blackListBssid(String bssid) { 3283 mWifiConfigStore.blackListBssid(bssid); 3284 } 3285 3286 public boolean isBssidBlacklisted(String bssid) { 3287 return mWifiConfigStore.isBssidBlacklisted(bssid); 3288 } 3289 3290 public boolean getEnableAutoJoinWhenAssociated() { 3291 return mEnableAutoJoinWhenAssociated.get(); 3292 } 3293 3294 public void setEnableAutoJoinWhenAssociated(boolean enabled) { 3295 mEnableAutoJoinWhenAssociated.set(enabled); 3296 } 3297 3298 public void setActiveScanDetail(ScanDetail activeScanDetail) { 3299 synchronized (mActiveScanDetailLock) { 3300 mActiveScanDetail = activeScanDetail; 3301 } 3302 } 3303 3304 /** 3305 * Check if the provided ephemeral network was deleted by the user or not. 3306 * @param ssid ssid of the network 3307 * @return true if network was deleted, false otherwise. 3308 */ 3309 public boolean wasEphemeralNetworkDeleted(String ssid) { 3310 return mDeletedEphemeralSSIDs.contains(ssid); 3311 } 3312} 3313