AccessPoint.java revision 0b8700f842a0d92e73ce096e0513c5acc7876ee5
1/* 2 * Copyright (C) 2015 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.settingslib.wifi; 18 19import android.annotation.IntDef; 20import android.annotation.Nullable; 21import android.app.AppGlobals; 22import android.content.Context; 23import android.content.pm.ApplicationInfo; 24import android.content.pm.IPackageManager; 25import android.content.pm.PackageManager; 26import android.net.ConnectivityManager; 27import android.net.NetworkCapabilities; 28import android.net.NetworkInfo; 29import android.net.NetworkInfo.DetailedState; 30import android.net.NetworkInfo.State; 31import android.net.NetworkKey; 32import android.net.NetworkScoreManager; 33import android.net.NetworkScorerAppData; 34import android.net.ScoredNetwork; 35import android.net.WifiKey; 36import android.net.wifi.IWifiManager; 37import android.net.wifi.ScanResult; 38import android.net.wifi.WifiConfiguration; 39import android.net.wifi.WifiConfiguration.KeyMgmt; 40import android.net.wifi.WifiInfo; 41import android.net.wifi.WifiManager; 42import android.net.wifi.WifiNetworkScoreCache; 43import android.net.wifi.hotspot2.PasspointConfiguration; 44import android.os.Bundle; 45import android.os.RemoteException; 46import android.os.ServiceManager; 47import android.os.SystemClock; 48import android.os.UserHandle; 49import android.support.annotation.NonNull; 50import android.text.Spannable; 51import android.text.SpannableString; 52import android.text.TextUtils; 53import android.text.style.TtsSpan; 54import android.util.Log; 55 56import com.android.internal.annotations.VisibleForTesting; 57import com.android.settingslib.R; 58 59import java.lang.annotation.Retention; 60import java.lang.annotation.RetentionPolicy; 61import java.util.ArrayList; 62import java.util.HashMap; 63import java.util.Iterator; 64import java.util.Map; 65import java.util.concurrent.ConcurrentHashMap; 66import java.util.concurrent.atomic.AtomicInteger; 67 68 69public class AccessPoint implements Comparable<AccessPoint> { 70 static final String TAG = "SettingsLib.AccessPoint"; 71 72 /** 73 * Lower bound on the 2.4 GHz (802.11b/g/n) WLAN channels 74 */ 75 public static final int LOWER_FREQ_24GHZ = 2400; 76 77 /** 78 * Upper bound on the 2.4 GHz (802.11b/g/n) WLAN channels 79 */ 80 public static final int HIGHER_FREQ_24GHZ = 2500; 81 82 /** 83 * Lower bound on the 5.0 GHz (802.11a/h/j/n/ac) WLAN channels 84 */ 85 public static final int LOWER_FREQ_5GHZ = 4900; 86 87 /** 88 * Upper bound on the 5.0 GHz (802.11a/h/j/n/ac) WLAN channels 89 */ 90 public static final int HIGHER_FREQ_5GHZ = 5900; 91 92 @IntDef({Speed.NONE, Speed.SLOW, Speed.MODERATE, Speed.FAST, Speed.VERY_FAST}) 93 @Retention(RetentionPolicy.SOURCE) 94 public @interface Speed { 95 /** 96 * Constant value representing an unlabeled / unscored network. 97 */ 98 int NONE = 0; 99 /** 100 * Constant value representing a slow speed network connection. 101 */ 102 int SLOW = 5; 103 /** 104 * Constant value representing a medium speed network connection. 105 */ 106 int MODERATE = 10; 107 /** 108 * Constant value representing a fast speed network connection. 109 */ 110 int FAST = 20; 111 /** 112 * Constant value representing a very fast speed network connection. 113 */ 114 int VERY_FAST = 30; 115 } 116 117 /** 118 * Experimental: we should be able to show the user the list of BSSIDs and bands 119 * for that SSID. 120 * For now this data is used only with Verbose Logging so as to show the band and number 121 * of BSSIDs on which that network is seen. 122 */ 123 private final ConcurrentHashMap<String, ScanResult> mScanResultCache = 124 new ConcurrentHashMap<String, ScanResult>(32); 125 126 /** Map of BSSIDs to speed values for individual ScanResults. */ 127 private final Map<String, Integer> mScanResultScores = new HashMap<>(); 128 129 /** Maximum age of scan results to hold onto while actively scanning. **/ 130 private static final long MAX_SCAN_RESULT_AGE_MS = 15000; 131 132 static final String KEY_NETWORKINFO = "key_networkinfo"; 133 static final String KEY_WIFIINFO = "key_wifiinfo"; 134 static final String KEY_SCANRESULT = "key_scanresult"; 135 static final String KEY_SSID = "key_ssid"; 136 static final String KEY_SECURITY = "key_security"; 137 static final String KEY_SPEED = "key_speed"; 138 static final String KEY_PSKTYPE = "key_psktype"; 139 static final String KEY_SCANRESULTCACHE = "key_scanresultcache"; 140 static final String KEY_CONFIG = "key_config"; 141 static final String KEY_FQDN = "key_fqdn"; 142 static final String KEY_PROVIDER_FRIENDLY_NAME = "key_provider_friendly_name"; 143 static final AtomicInteger sLastId = new AtomicInteger(0); 144 145 /** 146 * These values are matched in string arrays -- changes must be kept in sync 147 */ 148 public static final int SECURITY_NONE = 0; 149 public static final int SECURITY_WEP = 1; 150 public static final int SECURITY_PSK = 2; 151 public static final int SECURITY_EAP = 3; 152 153 private static final int PSK_UNKNOWN = 0; 154 private static final int PSK_WPA = 1; 155 private static final int PSK_WPA2 = 2; 156 private static final int PSK_WPA_WPA2 = 3; 157 158 /** 159 * The number of distinct wifi levels. 160 * 161 * <p>Must keep in sync with {@link R.array.wifi_signal} and {@link WifiManager#RSSI_LEVELS}. 162 */ 163 public static final int SIGNAL_LEVELS = 5; 164 165 public static final int UNREACHABLE_RSSI = Integer.MIN_VALUE; 166 167 private final Context mContext; 168 169 private String ssid; 170 private String bssid; 171 private int security; 172 private int networkId = WifiConfiguration.INVALID_NETWORK_ID; 173 174 private int pskType = PSK_UNKNOWN; 175 176 private WifiConfiguration mConfig; 177 178 private int mRssi = UNREACHABLE_RSSI; 179 private long mSeen = 0; 180 181 private WifiInfo mInfo; 182 private NetworkInfo mNetworkInfo; 183 AccessPointListener mAccessPointListener; 184 185 private Object mTag; 186 187 private int mSpeed = Speed.NONE; 188 private boolean mIsScoredNetworkMetered = false; 189 190 // used to co-relate internal vs returned accesspoint. 191 int mId; 192 193 /** 194 * Information associated with the {@link PasspointConfiguration}. Only maintaining 195 * the relevant info to preserve spaces. 196 */ 197 private String mFqdn; 198 private String mProviderFriendlyName; 199 200 public AccessPoint(Context context, Bundle savedState) { 201 mContext = context; 202 mConfig = savedState.getParcelable(KEY_CONFIG); 203 if (mConfig != null) { 204 loadConfig(mConfig); 205 } 206 if (savedState.containsKey(KEY_SSID)) { 207 ssid = savedState.getString(KEY_SSID); 208 } 209 if (savedState.containsKey(KEY_SECURITY)) { 210 security = savedState.getInt(KEY_SECURITY); 211 } 212 if (savedState.containsKey(KEY_SPEED)) { 213 mSpeed = savedState.getInt(KEY_SPEED); 214 } 215 if (savedState.containsKey(KEY_PSKTYPE)) { 216 pskType = savedState.getInt(KEY_PSKTYPE); 217 } 218 mInfo = savedState.getParcelable(KEY_WIFIINFO); 219 if (savedState.containsKey(KEY_NETWORKINFO)) { 220 mNetworkInfo = savedState.getParcelable(KEY_NETWORKINFO); 221 } 222 if (savedState.containsKey(KEY_SCANRESULTCACHE)) { 223 ArrayList<ScanResult> scanResultArrayList = 224 savedState.getParcelableArrayList(KEY_SCANRESULTCACHE); 225 mScanResultCache.clear(); 226 for (ScanResult result : scanResultArrayList) { 227 mScanResultCache.put(result.BSSID, result); 228 } 229 } 230 if (savedState.containsKey(KEY_FQDN)) { 231 mFqdn = savedState.getString(KEY_FQDN); 232 } 233 if (savedState.containsKey(KEY_PROVIDER_FRIENDLY_NAME)) { 234 mProviderFriendlyName = savedState.getString(KEY_PROVIDER_FRIENDLY_NAME); 235 } 236 update(mConfig, mInfo, mNetworkInfo); 237 updateRssi(); 238 updateSeen(); 239 mId = sLastId.incrementAndGet(); 240 } 241 242 public AccessPoint(Context context, WifiConfiguration config) { 243 mContext = context; 244 loadConfig(config); 245 mId = sLastId.incrementAndGet(); 246 } 247 248 /** 249 * Initialize an AccessPoint object for a {@link PasspointConfiguration}. This is mainly 250 * used by "Saved Networks" page for managing the saved {@link PasspointConfiguration}. 251 */ 252 public AccessPoint(Context context, PasspointConfiguration config) { 253 mContext = context; 254 mFqdn = config.getHomeSp().getFqdn(); 255 mProviderFriendlyName = config.getHomeSp().getFriendlyName(); 256 mId = sLastId.incrementAndGet(); 257 } 258 259 AccessPoint(Context context, AccessPoint other) { 260 mContext = context; 261 copyFrom(other); 262 } 263 264 AccessPoint(Context context, ScanResult result) { 265 mContext = context; 266 initWithScanResult(result); 267 mId = sLastId.incrementAndGet(); 268 } 269 270 /** 271 * Copy accesspoint information. NOTE: We do not copy tag information because that is never 272 * set on the internal copy. 273 * @param that 274 */ 275 void copyFrom(AccessPoint that) { 276 that.evictOldScanResults(); 277 this.ssid = that.ssid; 278 this.bssid = that.bssid; 279 this.security = that.security; 280 this.networkId = that.networkId; 281 this.pskType = that.pskType; 282 this.mConfig = that.mConfig; //TODO: Watch out, this object is mutated. 283 this.mRssi = that.mRssi; 284 this.mSeen = that.mSeen; 285 this.mInfo = that.mInfo; 286 this.mNetworkInfo = that.mNetworkInfo; 287 this.mScanResultCache.clear(); 288 this.mScanResultCache.putAll(that.mScanResultCache); 289 this.mScanResultScores.clear(); 290 this.mScanResultScores.putAll(that.mScanResultScores); 291 this.mId = that.mId; 292 this.mSpeed = that.mSpeed; 293 this.mIsScoredNetworkMetered = that.mIsScoredNetworkMetered; 294 } 295 296 /** 297 * Returns a negative integer, zero, or a positive integer if this AccessPoint is less than, 298 * equal to, or greater than the other AccessPoint. 299 * 300 * Sort order rules for AccessPoints: 301 * 1. Active before inactive 302 * 2. Reachable before unreachable 303 * 3. Saved before unsaved 304 * 4. Network speed value 305 * 5. Stronger signal before weaker signal 306 * 6. SSID alphabetically 307 * 308 * Note that AccessPoints with a signal are usually also Reachable, 309 * and will thus appear before unreachable saved AccessPoints. 310 */ 311 @Override 312 public int compareTo(@NonNull AccessPoint other) { 313 // Active one goes first. 314 if (isActive() && !other.isActive()) return -1; 315 if (!isActive() && other.isActive()) return 1; 316 317 // Reachable one goes before unreachable one. 318 if (isReachable() && !other.isReachable()) return -1; 319 if (!isReachable() && other.isReachable()) return 1; 320 321 // Configured (saved) one goes before unconfigured one. 322 if (isSaved() && !other.isSaved()) return -1; 323 if (!isSaved() && other.isSaved()) return 1; 324 325 // Faster speeds go before slower speeds 326 if (getSpeed() != other.getSpeed()) { 327 return other.getSpeed() - getSpeed(); 328 } 329 330 // Sort by signal strength, bucketed by level 331 int difference = WifiManager.calculateSignalLevel(other.mRssi, SIGNAL_LEVELS) 332 - WifiManager.calculateSignalLevel(mRssi, SIGNAL_LEVELS); 333 if (difference != 0) { 334 return difference; 335 } 336 337 // Sort by ssid. 338 difference = getSsidStr().compareToIgnoreCase(other.getSsidStr()); 339 if (difference != 0) { 340 return difference; 341 } 342 343 // Do a case sensitive comparison to distinguish SSIDs that differ in case only 344 return getSsidStr().compareTo(other.getSsidStr()); 345 } 346 347 @Override 348 public boolean equals(Object other) { 349 if (!(other instanceof AccessPoint)) return false; 350 return (this.compareTo((AccessPoint) other) == 0); 351 } 352 353 @Override 354 public int hashCode() { 355 int result = 0; 356 if (mInfo != null) result += 13 * mInfo.hashCode(); 357 result += 19 * mRssi; 358 result += 23 * networkId; 359 result += 29 * ssid.hashCode(); 360 return result; 361 } 362 363 @Override 364 public String toString() { 365 StringBuilder builder = new StringBuilder().append("AccessPoint(") 366 .append(ssid); 367 if (bssid != null) { 368 builder.append(":").append(bssid); 369 } 370 if (isSaved()) { 371 builder.append(',').append("saved"); 372 } 373 if (isActive()) { 374 builder.append(',').append("active"); 375 } 376 if (isEphemeral()) { 377 builder.append(',').append("ephemeral"); 378 } 379 if (isConnectable()) { 380 builder.append(',').append("connectable"); 381 } 382 if (security != SECURITY_NONE) { 383 builder.append(',').append(securityToString(security, pskType)); 384 } 385 builder.append(",level=").append(getLevel()); 386 if (mSpeed != Speed.NONE) { 387 builder.append(",speed=").append(mSpeed); 388 } 389 builder.append(",metered=").append(isMetered()); 390 391 return builder.append(')').toString(); 392 } 393 394 /** 395 * Updates the AccessPoint rankingScore, metering, and speed, returning true if the data has 396 * changed. 397 * 398 * @param scoreCache The score cache to use to retrieve scores. 399 * @param scoringUiEnabled Whether to show scoring and badging UI. 400 */ 401 boolean update(WifiNetworkScoreCache scoreCache, boolean scoringUiEnabled) { 402 boolean scoreChanged = false; 403 mScanResultScores.clear(); 404 if (scoringUiEnabled) { 405 scoreChanged = updateScores(scoreCache); 406 } 407 return updateMetered(scoreCache) || scoreChanged; 408 } 409 410 /** 411 * Updates the AccessPoint rankingScore and speed, returning true if the data has changed. 412 * 413 * @param scoreCache The score cache to use to retrieve scores. 414 */ 415 private boolean updateScores(WifiNetworkScoreCache scoreCache) { 416 int oldSpeed = mSpeed; 417 mSpeed = Speed.NONE; 418 419 for (ScanResult result : mScanResultCache.values()) { 420 ScoredNetwork score = scoreCache.getScoredNetwork(result); 421 if (score == null) { 422 continue; 423 } 424 425 int speed = score.calculateBadge(result.level); 426 mScanResultScores.put(result.BSSID, speed); 427 mSpeed = Math.max(mSpeed, speed); 428 } 429 430 // set mSpeed to the connected ScanResult if the AccessPoint is the active network 431 if (isActive() && mInfo != null) { 432 NetworkKey key = new NetworkKey(new WifiKey( 433 AccessPoint.convertToQuotedString(ssid), mInfo.getBSSID())); 434 ScoredNetwork score = scoreCache.getScoredNetwork(key); 435 if (score != null) { 436 mSpeed = score.calculateBadge(mInfo.getRssi()); 437 } 438 } 439 440 if(WifiTracker.sVerboseLogging) { 441 Log.i(TAG, String.format("%s: Set speed to %d", ssid, mSpeed)); 442 } 443 444 return oldSpeed != mSpeed; 445 } 446 447 /** 448 * Updates the AccessPoint's metering based on {@link ScoredNetwork#meteredHint}, returning 449 * true if the metering changed. 450 */ 451 private boolean updateMetered(WifiNetworkScoreCache scoreCache) { 452 boolean oldMetering = mIsScoredNetworkMetered; 453 mIsScoredNetworkMetered = false; 454 455 if (isActive() && mInfo != null) { 456 NetworkKey key = new NetworkKey(new WifiKey( 457 AccessPoint.convertToQuotedString(ssid), mInfo.getBSSID())); 458 ScoredNetwork score = scoreCache.getScoredNetwork(key); 459 if (score != null) { 460 mIsScoredNetworkMetered |= score.meteredHint; 461 } 462 } else { 463 for (ScanResult result : mScanResultCache.values()) { 464 ScoredNetwork score = scoreCache.getScoredNetwork(result); 465 if (score == null) { 466 continue; 467 } 468 mIsScoredNetworkMetered |= score.meteredHint; 469 } 470 } 471 return oldMetering == mIsScoredNetworkMetered; 472 } 473 474 private void evictOldScanResults() { 475 if (WifiTracker.sStaleScanResults) { 476 // Do not evict old scan results unless we are scanning and have fresh results. 477 return; 478 } 479 long nowMs = SystemClock.elapsedRealtime(); 480 for (Iterator<ScanResult> iter = mScanResultCache.values().iterator(); iter.hasNext(); ) { 481 ScanResult result = iter.next(); 482 // result timestamp is in microseconds 483 if (nowMs - result.timestamp / 1000 > MAX_SCAN_RESULT_AGE_MS) { 484 iter.remove(); 485 } 486 } 487 } 488 489 public boolean matches(ScanResult result) { 490 return ssid.equals(result.SSID) && security == getSecurity(result); 491 } 492 493 public boolean matches(WifiConfiguration config) { 494 if (config.isPasspoint() && mConfig != null && mConfig.isPasspoint()) { 495 return ssid.equals(removeDoubleQuotes(config.SSID)) && config.FQDN.equals(mConfig.FQDN); 496 } else { 497 return ssid.equals(removeDoubleQuotes(config.SSID)) 498 && security == getSecurity(config) 499 && (mConfig == null || mConfig.shared == config.shared); 500 } 501 } 502 503 public WifiConfiguration getConfig() { 504 return mConfig; 505 } 506 507 public String getPasspointFqdn() { 508 return mFqdn; 509 } 510 511 public void clearConfig() { 512 mConfig = null; 513 networkId = WifiConfiguration.INVALID_NETWORK_ID; 514 } 515 516 public WifiInfo getInfo() { 517 return mInfo; 518 } 519 520 /** 521 * Returns the number of levels to show for a Wifi icon, from 0 to {@link #SIGNAL_LEVELS}-1. 522 * 523 * <p>Use {@#isReachable()} to determine if an AccessPoint is in range, as this method will 524 * always return at least 0. 525 */ 526 public int getLevel() { 527 return WifiManager.calculateSignalLevel(mRssi, SIGNAL_LEVELS); 528 } 529 530 public int getRssi() { 531 return mRssi; 532 } 533 534 /** 535 * Updates {@link #mRssi}. 536 * 537 * <p>If the given connection is active, the existing value of {@link #mRssi} will be returned. 538 * If the given AccessPoint is not active, a value will be calculated from previous scan 539 * results, returning the best RSSI for all matching AccessPoints averaged with the previous 540 * value. If the access point is not connected and there are no scan results, the rssi will be 541 * set to {@link #UNREACHABLE_RSSI}. 542 * 543 * <p>Old scan results will be evicted from the cache when this method is invoked. 544 */ 545 private void updateRssi() { 546 evictOldScanResults(); 547 548 if (this.isActive()) { 549 return; 550 } 551 552 int rssi = UNREACHABLE_RSSI; 553 for (ScanResult result : mScanResultCache.values()) { 554 if (result.level > rssi) { 555 rssi = result.level; 556 } 557 } 558 559 if (rssi != UNREACHABLE_RSSI && mRssi != UNREACHABLE_RSSI) { 560 mRssi = (mRssi + rssi) / 2; // half-life previous value 561 } else { 562 mRssi = rssi; 563 } 564 } 565 566 /** 567 * Updates {@link #mSeen} based on the scan result cache. 568 * 569 * <p>Old scan results will be evicted from the cache when this method is invoked. 570 */ 571 private void updateSeen() { 572 evictOldScanResults(); 573 574 // TODO(sghuman): Set to now if connected 575 576 long seen = 0; 577 for (ScanResult result : mScanResultCache.values()) { 578 if (result.timestamp > seen) { 579 seen = result.timestamp; 580 } 581 } 582 583 // Only replace the previous value if we have a recent scan result to use 584 if (seen != 0) { 585 mSeen = seen; 586 } 587 } 588 589 /** 590 * Returns if the network should be considered metered. 591 */ 592 public boolean isMetered() { 593 return mIsScoredNetworkMetered 594 || WifiConfiguration.isMetered(mConfig, mInfo); 595 } 596 597 public NetworkInfo getNetworkInfo() { 598 return mNetworkInfo; 599 } 600 601 public int getSecurity() { 602 return security; 603 } 604 605 public String getSecurityString(boolean concise) { 606 Context context = mContext; 607 if (mConfig != null && mConfig.isPasspoint()) { 608 return concise ? context.getString(R.string.wifi_security_short_eap) : 609 context.getString(R.string.wifi_security_eap); 610 } 611 switch(security) { 612 case SECURITY_EAP: 613 return concise ? context.getString(R.string.wifi_security_short_eap) : 614 context.getString(R.string.wifi_security_eap); 615 case SECURITY_PSK: 616 switch (pskType) { 617 case PSK_WPA: 618 return concise ? context.getString(R.string.wifi_security_short_wpa) : 619 context.getString(R.string.wifi_security_wpa); 620 case PSK_WPA2: 621 return concise ? context.getString(R.string.wifi_security_short_wpa2) : 622 context.getString(R.string.wifi_security_wpa2); 623 case PSK_WPA_WPA2: 624 return concise ? context.getString(R.string.wifi_security_short_wpa_wpa2) : 625 context.getString(R.string.wifi_security_wpa_wpa2); 626 case PSK_UNKNOWN: 627 default: 628 return concise ? context.getString(R.string.wifi_security_short_psk_generic) 629 : context.getString(R.string.wifi_security_psk_generic); 630 } 631 case SECURITY_WEP: 632 return concise ? context.getString(R.string.wifi_security_short_wep) : 633 context.getString(R.string.wifi_security_wep); 634 case SECURITY_NONE: 635 default: 636 return concise ? "" : context.getString(R.string.wifi_security_none); 637 } 638 } 639 640 public String getSsidStr() { 641 return ssid; 642 } 643 644 public String getBssid() { 645 return bssid; 646 } 647 648 public CharSequence getSsid() { 649 final SpannableString str = new SpannableString(ssid); 650 str.setSpan(new TtsSpan.TelephoneBuilder(ssid).build(), 0, ssid.length(), 651 Spannable.SPAN_INCLUSIVE_INCLUSIVE); 652 return str; 653 } 654 655 public String getConfigName() { 656 if (mConfig != null && mConfig.isPasspoint()) { 657 return mConfig.providerFriendlyName; 658 } else if (mFqdn != null) { 659 return mProviderFriendlyName; 660 } else { 661 return ssid; 662 } 663 } 664 665 public DetailedState getDetailedState() { 666 if (mNetworkInfo != null) { 667 return mNetworkInfo.getDetailedState(); 668 } 669 Log.w(TAG, "NetworkInfo is null, cannot return detailed state"); 670 return null; 671 } 672 673 public String getSavedNetworkSummary() { 674 WifiConfiguration config = mConfig; 675 if (config != null) { 676 PackageManager pm = mContext.getPackageManager(); 677 String systemName = pm.getNameForUid(android.os.Process.SYSTEM_UID); 678 int userId = UserHandle.getUserId(config.creatorUid); 679 ApplicationInfo appInfo = null; 680 if (config.creatorName != null && config.creatorName.equals(systemName)) { 681 appInfo = mContext.getApplicationInfo(); 682 } else { 683 try { 684 IPackageManager ipm = AppGlobals.getPackageManager(); 685 appInfo = ipm.getApplicationInfo(config.creatorName, 0 /* flags */, userId); 686 } catch (RemoteException rex) { 687 } 688 } 689 if (appInfo != null && 690 !appInfo.packageName.equals(mContext.getString(R.string.settings_package)) && 691 !appInfo.packageName.equals( 692 mContext.getString(R.string.certinstaller_package))) { 693 return mContext.getString(R.string.saved_network, appInfo.loadLabel(pm)); 694 } 695 } 696 return ""; 697 } 698 699 public String getSummary() { 700 return getSettingsSummary(mConfig); 701 } 702 703 public String getSettingsSummary() { 704 return getSettingsSummary(mConfig); 705 } 706 707 private String getSettingsSummary(WifiConfiguration config) { 708 // Update to new summary 709 StringBuilder summary = new StringBuilder(); 710 711 if (isActive() && config != null && config.isPasspoint()) { 712 // This is the active connection on passpoint 713 summary.append(getSummary(mContext, getDetailedState(), 714 false, config.providerFriendlyName)); 715 } else if (isActive()) { 716 // This is the active connection on non-passpoint network 717 summary.append(getSummary(mContext, getDetailedState(), 718 mInfo != null && mInfo.isEphemeral())); 719 } else if (config != null && config.isPasspoint() 720 && config.getNetworkSelectionStatus().isNetworkEnabled()) { 721 String format = mContext.getString(R.string.available_via_passpoint); 722 summary.append(String.format(format, config.providerFriendlyName)); 723 } else if (config != null && config.hasNoInternetAccess()) { 724 int messageID = config.getNetworkSelectionStatus().isNetworkPermanentlyDisabled() 725 ? R.string.wifi_no_internet_no_reconnect 726 : R.string.wifi_no_internet; 727 summary.append(mContext.getString(messageID)); 728 } else if (config != null && !config.getNetworkSelectionStatus().isNetworkEnabled()) { 729 WifiConfiguration.NetworkSelectionStatus networkStatus = 730 config.getNetworkSelectionStatus(); 731 switch (networkStatus.getNetworkSelectionDisableReason()) { 732 case WifiConfiguration.NetworkSelectionStatus.DISABLED_AUTHENTICATION_FAILURE: 733 summary.append(mContext.getString(R.string.wifi_disabled_password_failure)); 734 break; 735 case WifiConfiguration.NetworkSelectionStatus.DISABLED_BY_WRONG_PASSWORD: 736 summary.append(mContext.getString(R.string.wifi_check_password_try_again)); 737 break; 738 case WifiConfiguration.NetworkSelectionStatus.DISABLED_DHCP_FAILURE: 739 case WifiConfiguration.NetworkSelectionStatus.DISABLED_DNS_FAILURE: 740 summary.append(mContext.getString(R.string.wifi_disabled_network_failure)); 741 break; 742 case WifiConfiguration.NetworkSelectionStatus.DISABLED_ASSOCIATION_REJECTION: 743 summary.append(mContext.getString(R.string.wifi_disabled_generic)); 744 break; 745 } 746 } else if (config != null && config.getNetworkSelectionStatus().isNotRecommended()) { 747 summary.append(mContext.getString(R.string.wifi_disabled_by_recommendation_provider)); 748 } else if (!isReachable()) { // Wifi out of range 749 summary.append(mContext.getString(R.string.wifi_not_in_range)); 750 } else { // In range, not disabled. 751 if (config != null) { // Is saved network 752 // Last attempt to connect to this failed. Show reason why 753 switch (config.recentFailure.getAssociationStatus()) { 754 case WifiConfiguration.RecentFailure.STATUS_AP_UNABLE_TO_HANDLE_NEW_STA: 755 summary.append(mContext.getString( 756 R.string.wifi_ap_unable_to_handle_new_sta)); 757 break; 758 default: 759 // "Saved" 760 summary.append(mContext.getString(R.string.wifi_remembered)); 761 break; 762 } 763 } 764 } 765 766 if (WifiTracker.sVerboseLogging) { 767 // Add RSSI/band information for this config, what was seen up to 6 seconds ago 768 // verbose WiFi Logging is only turned on thru developers settings 769 if (isActive() && mInfo != null) { 770 summary.append(" f=" + Integer.toString(mInfo.getFrequency())); 771 } 772 summary.append(" " + getVisibilityStatus()); 773 if (config != null && !config.getNetworkSelectionStatus().isNetworkEnabled()) { 774 summary.append(" (" + config.getNetworkSelectionStatus().getNetworkStatusString()); 775 if (config.getNetworkSelectionStatus().getDisableTime() > 0) { 776 long now = System.currentTimeMillis(); 777 long diff = (now - config.getNetworkSelectionStatus().getDisableTime()) / 1000; 778 long sec = diff%60; //seconds 779 long min = (diff/60)%60; //minutes 780 long hour = (min/60)%60; //hours 781 summary.append(", "); 782 if (hour > 0) summary.append(Long.toString(hour) + "h "); 783 summary.append( Long.toString(min) + "m "); 784 summary.append( Long.toString(sec) + "s "); 785 } 786 summary.append(")"); 787 } 788 789 if (config != null) { 790 WifiConfiguration.NetworkSelectionStatus networkStatus = 791 config.getNetworkSelectionStatus(); 792 for (int index = WifiConfiguration.NetworkSelectionStatus.NETWORK_SELECTION_ENABLE; 793 index < WifiConfiguration.NetworkSelectionStatus 794 .NETWORK_SELECTION_DISABLED_MAX; index++) { 795 if (networkStatus.getDisableReasonCounter(index) != 0) { 796 summary.append(" " + WifiConfiguration.NetworkSelectionStatus 797 .getNetworkDisableReasonString(index) + "=" 798 + networkStatus.getDisableReasonCounter(index)); 799 } 800 } 801 } 802 } 803 804 // If Speed label and summary are both present, use the preference combination to combine 805 // the two, else return the non-null one. 806 if (getSpeedLabel() != null && summary.length() != 0) { 807 return mContext.getResources().getString( 808 R.string.preference_summary_default_combination, 809 getSpeedLabel(), 810 summary.toString()); 811 } else if (getSpeedLabel() != null) { 812 return getSpeedLabel(); 813 } else { 814 return summary.toString(); 815 } 816 } 817 818 /** 819 * Returns the visibility status of the WifiConfiguration. 820 * 821 * @return autojoin debugging information 822 * TODO: use a string formatter 823 * ["rssi 5Ghz", "num results on 5GHz" / "rssi 5Ghz", "num results on 5GHz"] 824 * For instance [-40,5/-30,2] 825 */ 826 private String getVisibilityStatus() { 827 StringBuilder visibility = new StringBuilder(); 828 StringBuilder scans24GHz = new StringBuilder(); 829 StringBuilder scans5GHz = new StringBuilder(); 830 String bssid = null; 831 832 long now = System.currentTimeMillis(); 833 834 if (isActive() && mInfo != null) { 835 bssid = mInfo.getBSSID(); 836 if (bssid != null) { 837 visibility.append(" ").append(bssid); 838 } 839 visibility.append(" rssi=").append(mInfo.getRssi()); 840 visibility.append(" "); 841 visibility.append(" score=").append(mInfo.score); 842 if (mSpeed != Speed.NONE) { 843 visibility.append(" speed=").append(getSpeedLabel()); 844 } 845 visibility.append(String.format(" tx=%.1f,", mInfo.txSuccessRate)); 846 visibility.append(String.format("%.1f,", mInfo.txRetriesRate)); 847 visibility.append(String.format("%.1f ", mInfo.txBadRate)); 848 visibility.append(String.format("rx=%.1f", mInfo.rxSuccessRate)); 849 } 850 851 int maxRssi5 = WifiConfiguration.INVALID_RSSI; 852 int maxRssi24 = WifiConfiguration.INVALID_RSSI; 853 final int maxDisplayedScans = 4; 854 int num5 = 0; // number of scanned BSSID on 5GHz band 855 int num24 = 0; // number of scanned BSSID on 2.4Ghz band 856 int numBlackListed = 0; 857 evictOldScanResults(); 858 859 // TODO: sort list by RSSI or age 860 for (ScanResult result : mScanResultCache.values()) { 861 if (result.frequency >= LOWER_FREQ_5GHZ 862 && result.frequency <= HIGHER_FREQ_5GHZ) { 863 // Strictly speaking: [4915, 5825] 864 num5++; 865 866 if (result.level > maxRssi5) { 867 maxRssi5 = result.level; 868 } 869 if (num5 <= maxDisplayedScans) { 870 scans5GHz.append(verboseScanResultSummary(result, bssid)); 871 } 872 } else if (result.frequency >= LOWER_FREQ_24GHZ 873 && result.frequency <= HIGHER_FREQ_24GHZ) { 874 // Strictly speaking: [2412, 2482] 875 num24++; 876 877 if (result.level > maxRssi24) { 878 maxRssi24 = result.level; 879 } 880 if (num24 <= maxDisplayedScans) { 881 scans24GHz.append(verboseScanResultSummary(result, bssid)); 882 } 883 } 884 } 885 visibility.append(" ["); 886 if (num24 > 0) { 887 visibility.append("(").append(num24).append(")"); 888 if (num24 > maxDisplayedScans) { 889 visibility.append("max=").append(maxRssi24).append(","); 890 } 891 visibility.append(scans24GHz.toString()); 892 } 893 visibility.append(";"); 894 if (num5 > 0) { 895 visibility.append("(").append(num5).append(")"); 896 if (num5 > maxDisplayedScans) { 897 visibility.append("max=").append(maxRssi5).append(","); 898 } 899 visibility.append(scans5GHz.toString()); 900 } 901 if (numBlackListed > 0) 902 visibility.append("!").append(numBlackListed); 903 visibility.append("]"); 904 905 return visibility.toString(); 906 } 907 908 @VisibleForTesting 909 /* package */ String verboseScanResultSummary(ScanResult result, String bssid) { 910 StringBuilder stringBuilder = new StringBuilder(); 911 stringBuilder.append(" \n{").append(result.BSSID); 912 if (result.BSSID.equals(bssid)) { 913 stringBuilder.append("*"); 914 } 915 stringBuilder.append("=").append(result.frequency); 916 stringBuilder.append(",").append(result.level); 917 if (hasSpeed(result)) { 918 stringBuilder.append(",") 919 .append(getSpeedLabel(mScanResultScores.get(result.BSSID))); 920 } 921 stringBuilder.append("}"); 922 return stringBuilder.toString(); 923 } 924 925 private boolean hasSpeed(ScanResult result) { 926 return mScanResultScores.containsKey(result.BSSID) 927 && mScanResultScores.get(result.BSSID) != Speed.NONE; 928 } 929 930 /** 931 * Return whether this is the active connection. 932 * For ephemeral connections (networkId is invalid), this returns false if the network is 933 * disconnected. 934 */ 935 public boolean isActive() { 936 return mNetworkInfo != null && 937 (networkId != WifiConfiguration.INVALID_NETWORK_ID || 938 mNetworkInfo.getState() != State.DISCONNECTED); 939 } 940 941 public boolean isConnectable() { 942 return getLevel() != -1 && getDetailedState() == null; 943 } 944 945 public boolean isEphemeral() { 946 return mInfo != null && mInfo.isEphemeral() && 947 mNetworkInfo != null && mNetworkInfo.getState() != State.DISCONNECTED; 948 } 949 950 /** 951 * Return true if this AccessPoint represents a Passpoint AP. 952 */ 953 public boolean isPasspoint() { 954 return mConfig != null && mConfig.isPasspoint(); 955 } 956 957 /** 958 * Return true if this AccessPoint represents a Passpoint provider configuration. 959 */ 960 public boolean isPasspointConfig() { 961 return mFqdn != null; 962 } 963 964 /** 965 * Return whether the given {@link WifiInfo} is for this access point. 966 * If the current AP does not have a network Id then the config is used to 967 * match based on SSID and security. 968 */ 969 private boolean isInfoForThisAccessPoint(WifiConfiguration config, WifiInfo info) { 970 if (isPasspoint() == false && networkId != WifiConfiguration.INVALID_NETWORK_ID) { 971 return networkId == info.getNetworkId(); 972 } else if (config != null) { 973 return matches(config); 974 } 975 else { 976 // Might be an ephemeral connection with no WifiConfiguration. Try matching on SSID. 977 // (Note that we only do this if the WifiConfiguration explicitly equals INVALID). 978 // TODO: Handle hex string SSIDs. 979 return ssid.equals(removeDoubleQuotes(info.getSSID())); 980 } 981 } 982 983 public boolean isSaved() { 984 return networkId != WifiConfiguration.INVALID_NETWORK_ID; 985 } 986 987 public Object getTag() { 988 return mTag; 989 } 990 991 public void setTag(Object tag) { 992 mTag = tag; 993 } 994 995 /** 996 * Generate and save a default wifiConfiguration with common values. 997 * Can only be called for unsecured networks. 998 */ 999 public void generateOpenNetworkConfig() { 1000 if (security != SECURITY_NONE) 1001 throw new IllegalStateException(); 1002 if (mConfig != null) 1003 return; 1004 mConfig = new WifiConfiguration(); 1005 mConfig.SSID = AccessPoint.convertToQuotedString(ssid); 1006 mConfig.allowedKeyManagement.set(KeyMgmt.NONE); 1007 } 1008 1009 void loadConfig(WifiConfiguration config) { 1010 ssid = (config.SSID == null ? "" : removeDoubleQuotes(config.SSID)); 1011 bssid = config.BSSID; 1012 security = getSecurity(config); 1013 networkId = config.networkId; 1014 mConfig = config; 1015 } 1016 1017 private void initWithScanResult(ScanResult result) { 1018 ssid = result.SSID; 1019 bssid = result.BSSID; 1020 security = getSecurity(result); 1021 if (security == SECURITY_PSK) 1022 pskType = getPskType(result); 1023 1024 mScanResultCache.put(result.BSSID, result); 1025 updateRssi(); 1026 mSeen = result.timestamp; // even if the timestamp is old it is still valid 1027 } 1028 1029 public void saveWifiState(Bundle savedState) { 1030 if (ssid != null) savedState.putString(KEY_SSID, getSsidStr()); 1031 savedState.putInt(KEY_SECURITY, security); 1032 savedState.putInt(KEY_SPEED, mSpeed); 1033 savedState.putInt(KEY_PSKTYPE, pskType); 1034 if (mConfig != null) savedState.putParcelable(KEY_CONFIG, mConfig); 1035 savedState.putParcelable(KEY_WIFIINFO, mInfo); 1036 evictOldScanResults(); 1037 savedState.putParcelableArrayList(KEY_SCANRESULTCACHE, 1038 new ArrayList<ScanResult>(mScanResultCache.values())); 1039 if (mNetworkInfo != null) { 1040 savedState.putParcelable(KEY_NETWORKINFO, mNetworkInfo); 1041 } 1042 if (mFqdn != null) { 1043 savedState.putString(KEY_FQDN, mFqdn); 1044 } 1045 if (mProviderFriendlyName != null) { 1046 savedState.putString(KEY_PROVIDER_FRIENDLY_NAME, mProviderFriendlyName); 1047 } 1048 } 1049 1050 public void setListener(AccessPointListener listener) { 1051 mAccessPointListener = listener; 1052 } 1053 1054 boolean update(ScanResult result) { 1055 if (matches(result)) { 1056 int oldLevel = getLevel(); 1057 1058 /* Add or update the scan result for the BSSID */ 1059 mScanResultCache.put(result.BSSID, result); 1060 updateSeen(); 1061 updateRssi(); 1062 int newLevel = getLevel(); 1063 1064 if (newLevel > 0 && newLevel != oldLevel && mAccessPointListener != null) { 1065 mAccessPointListener.onLevelChanged(this); 1066 } 1067 // This flag only comes from scans, is not easily saved in config 1068 if (security == SECURITY_PSK) { 1069 pskType = getPskType(result); 1070 } 1071 1072 if (mAccessPointListener != null) { 1073 mAccessPointListener.onAccessPointChanged(this); 1074 } 1075 1076 return true; 1077 } 1078 return false; 1079 } 1080 1081 /** Attempt to update the AccessPoint and return true if an update occurred. */ 1082 public boolean update( 1083 @Nullable WifiConfiguration config, WifiInfo info, NetworkInfo networkInfo) { 1084 boolean updated = false; 1085 final int oldLevel = getLevel(); 1086 if (info != null && isInfoForThisAccessPoint(config, info)) { 1087 updated = (mInfo == null); 1088 if (mConfig != config) { 1089 // We do not set updated = true as we do not want to increase the amount of sorting 1090 // and copying performed in WifiTracker at this time. If issues involving refresh 1091 // are still seen, we will investigate further. 1092 update(config); // Notifies the AccessPointListener of the change 1093 } 1094 if (mRssi != info.getRssi() && info.getRssi() != WifiInfo.INVALID_RSSI) { 1095 mRssi = info.getRssi(); 1096 updated = true; 1097 } else if (mNetworkInfo != null && networkInfo != null 1098 && mNetworkInfo.getDetailedState() != networkInfo.getDetailedState()) { 1099 updated = true; 1100 } 1101 mInfo = info; 1102 mNetworkInfo = networkInfo; 1103 } else if (mInfo != null) { 1104 updated = true; 1105 mInfo = null; 1106 mNetworkInfo = null; 1107 } 1108 if (updated && mAccessPointListener != null) { 1109 mAccessPointListener.onAccessPointChanged(this); 1110 1111 if (oldLevel != getLevel() /* current level */) { 1112 mAccessPointListener.onLevelChanged(this); 1113 } 1114 } 1115 return updated; 1116 } 1117 1118 void update(@Nullable WifiConfiguration config) { 1119 mConfig = config; 1120 networkId = config != null ? config.networkId : WifiConfiguration.INVALID_NETWORK_ID; 1121 if (mAccessPointListener != null) { 1122 mAccessPointListener.onAccessPointChanged(this); 1123 } 1124 } 1125 1126 @VisibleForTesting 1127 void setRssi(int rssi) { 1128 mRssi = rssi; 1129 } 1130 1131 /** Sets the rssi to {@link #UNREACHABLE_RSSI}. */ 1132 void setUnreachable() { 1133 setRssi(AccessPoint.UNREACHABLE_RSSI); 1134 } 1135 1136 int getSpeed() { return mSpeed;} 1137 1138 @Nullable 1139 String getSpeedLabel() { 1140 return getSpeedLabel(mSpeed); 1141 } 1142 1143 @Nullable 1144 private String getSpeedLabel(int speed) { 1145 switch (speed) { 1146 case Speed.VERY_FAST: 1147 return mContext.getString(R.string.speed_label_very_fast); 1148 case Speed.FAST: 1149 return mContext.getString(R.string.speed_label_fast); 1150 case Speed.MODERATE: 1151 return mContext.getString(R.string.speed_label_okay); 1152 case Speed.SLOW: 1153 return mContext.getString(R.string.speed_label_slow); 1154 case Speed.NONE: 1155 default: 1156 return null; 1157 } 1158 } 1159 1160 /** Return true if the current RSSI is reachable, and false otherwise. */ 1161 public boolean isReachable() { 1162 return mRssi != UNREACHABLE_RSSI; 1163 } 1164 1165 public static String getSummary(Context context, String ssid, DetailedState state, 1166 boolean isEphemeral, String passpointProvider) { 1167 if (state == DetailedState.CONNECTED && ssid == null) { 1168 if (TextUtils.isEmpty(passpointProvider) == false) { 1169 // Special case for connected + passpoint networks. 1170 String format = context.getString(R.string.connected_via_passpoint); 1171 return String.format(format, passpointProvider); 1172 } else if (isEphemeral) { 1173 // Special case for connected + ephemeral networks. 1174 final NetworkScoreManager networkScoreManager = context.getSystemService( 1175 NetworkScoreManager.class); 1176 NetworkScorerAppData scorer = networkScoreManager.getActiveScorer(); 1177 if (scorer != null && scorer.getRecommendationServiceLabel() != null) { 1178 String format = context.getString(R.string.connected_via_network_scorer); 1179 return String.format(format, scorer.getRecommendationServiceLabel()); 1180 } else { 1181 return context.getString(R.string.connected_via_network_scorer_default); 1182 } 1183 } 1184 } 1185 1186 // Case when there is wifi connected without internet connectivity. 1187 final ConnectivityManager cm = (ConnectivityManager) 1188 context.getSystemService(Context.CONNECTIVITY_SERVICE); 1189 if (state == DetailedState.CONNECTED) { 1190 IWifiManager wifiManager = IWifiManager.Stub.asInterface( 1191 ServiceManager.getService(Context.WIFI_SERVICE)); 1192 NetworkCapabilities nc = null; 1193 1194 try { 1195 nc = cm.getNetworkCapabilities(wifiManager.getCurrentNetwork()); 1196 } catch (RemoteException e) {} 1197 1198 if (nc != null) { 1199 if (nc.hasCapability(nc.NET_CAPABILITY_CAPTIVE_PORTAL)) { 1200 int id = context.getResources() 1201 .getIdentifier("network_available_sign_in", "string", "android"); 1202 return context.getString(id); 1203 } else if (!nc.hasCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED)) { 1204 return context.getString(R.string.wifi_connected_no_internet); 1205 } 1206 } 1207 } 1208 if (state == null) { 1209 Log.w(TAG, "state is null, returning empty summary"); 1210 return ""; 1211 } 1212 String[] formats = context.getResources().getStringArray((ssid == null) 1213 ? R.array.wifi_status : R.array.wifi_status_with_ssid); 1214 int index = state.ordinal(); 1215 1216 if (index >= formats.length || formats[index].length() == 0) { 1217 return ""; 1218 } 1219 return String.format(formats[index], ssid); 1220 } 1221 1222 public static String getSummary(Context context, DetailedState state, boolean isEphemeral) { 1223 return getSummary(context, null, state, isEphemeral, null); 1224 } 1225 1226 public static String getSummary(Context context, DetailedState state, boolean isEphemeral, 1227 String passpointProvider) { 1228 return getSummary(context, null, state, isEphemeral, passpointProvider); 1229 } 1230 1231 public static String convertToQuotedString(String string) { 1232 return "\"" + string + "\""; 1233 } 1234 1235 private static int getPskType(ScanResult result) { 1236 boolean wpa = result.capabilities.contains("WPA-PSK"); 1237 boolean wpa2 = result.capabilities.contains("WPA2-PSK"); 1238 if (wpa2 && wpa) { 1239 return PSK_WPA_WPA2; 1240 } else if (wpa2) { 1241 return PSK_WPA2; 1242 } else if (wpa) { 1243 return PSK_WPA; 1244 } else { 1245 Log.w(TAG, "Received abnormal flag string: " + result.capabilities); 1246 return PSK_UNKNOWN; 1247 } 1248 } 1249 1250 private static int getSecurity(ScanResult result) { 1251 if (result.capabilities.contains("WEP")) { 1252 return SECURITY_WEP; 1253 } else if (result.capabilities.contains("PSK")) { 1254 return SECURITY_PSK; 1255 } else if (result.capabilities.contains("EAP")) { 1256 return SECURITY_EAP; 1257 } 1258 return SECURITY_NONE; 1259 } 1260 1261 static int getSecurity(WifiConfiguration config) { 1262 if (config.allowedKeyManagement.get(KeyMgmt.WPA_PSK)) { 1263 return SECURITY_PSK; 1264 } 1265 if (config.allowedKeyManagement.get(KeyMgmt.WPA_EAP) || 1266 config.allowedKeyManagement.get(KeyMgmt.IEEE8021X)) { 1267 return SECURITY_EAP; 1268 } 1269 return (config.wepKeys[0] != null) ? SECURITY_WEP : SECURITY_NONE; 1270 } 1271 1272 public static String securityToString(int security, int pskType) { 1273 if (security == SECURITY_WEP) { 1274 return "WEP"; 1275 } else if (security == SECURITY_PSK) { 1276 if (pskType == PSK_WPA) { 1277 return "WPA"; 1278 } else if (pskType == PSK_WPA2) { 1279 return "WPA2"; 1280 } else if (pskType == PSK_WPA_WPA2) { 1281 return "WPA_WPA2"; 1282 } 1283 return "PSK"; 1284 } else if (security == SECURITY_EAP) { 1285 return "EAP"; 1286 } 1287 return "NONE"; 1288 } 1289 1290 static String removeDoubleQuotes(String string) { 1291 if (TextUtils.isEmpty(string)) { 1292 return ""; 1293 } 1294 int length = string.length(); 1295 if ((length > 1) && (string.charAt(0) == '"') 1296 && (string.charAt(length - 1) == '"')) { 1297 return string.substring(1, length - 1); 1298 } 1299 return string; 1300 } 1301 1302 public interface AccessPointListener { 1303 void onAccessPointChanged(AccessPoint accessPoint); 1304 void onLevelChanged(AccessPoint accessPoint); 1305 } 1306} 1307