AccessPoint.java revision a419b9b4db99c5ca6df759ba7ffebe0855fc0891
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.WifiEnterpriseConfig; 41import android.net.wifi.WifiInfo; 42import android.net.wifi.WifiManager; 43import android.net.wifi.WifiNetworkScoreCache; 44import android.net.wifi.hotspot2.PasspointConfiguration; 45import android.os.Bundle; 46import android.os.RemoteException; 47import android.os.ServiceManager; 48import android.os.SystemClock; 49import android.os.UserHandle; 50import android.support.annotation.NonNull; 51import android.text.Spannable; 52import android.text.SpannableString; 53import android.text.TextUtils; 54import android.text.format.DateUtils; 55import android.text.style.TtsSpan; 56import android.util.Log; 57 58import com.android.internal.annotations.VisibleForTesting; 59import com.android.settingslib.R; 60 61import java.lang.annotation.Retention; 62import java.lang.annotation.RetentionPolicy; 63import java.util.ArrayList; 64import java.util.HashMap; 65import java.util.Iterator; 66import java.util.Map; 67import java.util.concurrent.ConcurrentHashMap; 68import java.util.concurrent.atomic.AtomicInteger; 69 70 71public class AccessPoint implements Comparable<AccessPoint> { 72 static final String TAG = "SettingsLib.AccessPoint"; 73 74 /** 75 * Lower bound on the 2.4 GHz (802.11b/g/n) WLAN channels 76 */ 77 public static final int LOWER_FREQ_24GHZ = 2400; 78 79 /** 80 * Upper bound on the 2.4 GHz (802.11b/g/n) WLAN channels 81 */ 82 public static final int HIGHER_FREQ_24GHZ = 2500; 83 84 /** 85 * Lower bound on the 5.0 GHz (802.11a/h/j/n/ac) WLAN channels 86 */ 87 public static final int LOWER_FREQ_5GHZ = 4900; 88 89 /** 90 * Upper bound on the 5.0 GHz (802.11a/h/j/n/ac) WLAN channels 91 */ 92 public static final int HIGHER_FREQ_5GHZ = 5900; 93 94 @IntDef({Speed.NONE, Speed.SLOW, Speed.MODERATE, Speed.FAST, Speed.VERY_FAST}) 95 @Retention(RetentionPolicy.SOURCE) 96 public @interface Speed { 97 /** 98 * Constant value representing an unlabeled / unscored network. 99 */ 100 int NONE = 0; 101 /** 102 * Constant value representing a slow speed network connection. 103 */ 104 int SLOW = 5; 105 /** 106 * Constant value representing a medium speed network connection. 107 */ 108 int MODERATE = 10; 109 /** 110 * Constant value representing a fast speed network connection. 111 */ 112 int FAST = 20; 113 /** 114 * Constant value representing a very fast speed network connection. 115 */ 116 int VERY_FAST = 30; 117 } 118 119 /** 120 * Experimental: we should be able to show the user the list of BSSIDs and bands 121 * for that SSID. 122 * For now this data is used only with Verbose Logging so as to show the band and number 123 * of BSSIDs on which that network is seen. 124 */ 125 private final ConcurrentHashMap<String, ScanResult> mScanResultCache = 126 new ConcurrentHashMap<String, ScanResult>(32); 127 128 /** 129 * Map of BSSIDs to scored networks for individual bssids. 130 * 131 * <p>This cache should not be evicted with scan results, as the values here are used to 132 * generate a fallback in the absence of scores for the visible APs. 133 */ 134 private final Map<String, TimestampedScoredNetwork> mScoredNetworkCache = new HashMap<>(); 135 136 /** Maximum age in millis of cached scored networks in {@link #mScoredNetworkCache}. */ 137 @VisibleForTesting static final long MAX_CACHED_SCORE_AGE_MILLIS = 138 24 * DateUtils.DAY_IN_MILLIS; 139 140 /** Maximum age of scan results to hold onto while actively scanning. **/ 141 private static final long MAX_SCAN_RESULT_AGE_MILLIS = 15000; 142 143 static final String KEY_NETWORKINFO = "key_networkinfo"; 144 static final String KEY_WIFIINFO = "key_wifiinfo"; 145 static final String KEY_SCANRESULT = "key_scanresult"; 146 static final String KEY_SSID = "key_ssid"; 147 static final String KEY_SECURITY = "key_security"; 148 static final String KEY_SPEED = "key_speed"; 149 static final String KEY_PSKTYPE = "key_psktype"; 150 static final String KEY_SCANRESULTCACHE = "key_scanresultcache"; 151 static final String KEY_SCOREDNETWORKCACHE = "key_scorednetworkcache"; 152 static final String KEY_CONFIG = "key_config"; 153 static final String KEY_FQDN = "key_fqdn"; 154 static final String KEY_PROVIDER_FRIENDLY_NAME = "key_provider_friendly_name"; 155 static final String KEY_IS_CARRIER_AP = "key_is_carrier_ap"; 156 static final String KEY_CARRIER_AP_EAP_TYPE = "key_carrier_ap_eap_type"; 157 static final String KEY_CARRIER_NAME = "key_carrier_name"; 158 static final AtomicInteger sLastId = new AtomicInteger(0); 159 160 /** 161 * These values are matched in string arrays -- changes must be kept in sync 162 */ 163 public static final int SECURITY_NONE = 0; 164 public static final int SECURITY_WEP = 1; 165 public static final int SECURITY_PSK = 2; 166 public static final int SECURITY_EAP = 3; 167 168 private static final int PSK_UNKNOWN = 0; 169 private static final int PSK_WPA = 1; 170 private static final int PSK_WPA2 = 2; 171 private static final int PSK_WPA_WPA2 = 3; 172 173 /** 174 * The number of distinct wifi levels. 175 * 176 * <p>Must keep in sync with {@link R.array.wifi_signal} and {@link WifiManager#RSSI_LEVELS}. 177 */ 178 public static final int SIGNAL_LEVELS = 5; 179 180 public static final int UNREACHABLE_RSSI = Integer.MIN_VALUE; 181 182 private final Context mContext; 183 184 private String ssid; 185 private String bssid; 186 private int security; 187 private int networkId = WifiConfiguration.INVALID_NETWORK_ID; 188 189 private int pskType = PSK_UNKNOWN; 190 191 private WifiConfiguration mConfig; 192 193 private int mRssi = UNREACHABLE_RSSI; 194 private long mSeen = 0; 195 196 private WifiInfo mInfo; 197 private NetworkInfo mNetworkInfo; 198 AccessPointListener mAccessPointListener; 199 200 private Object mTag; 201 202 @Speed private int mSpeed = Speed.NONE; 203 private boolean mIsScoredNetworkMetered = false; 204 205 // used to co-relate internal vs returned accesspoint. 206 int mId; 207 208 /** 209 * Information associated with the {@link PasspointConfiguration}. Only maintaining 210 * the relevant info to preserve spaces. 211 */ 212 private String mFqdn; 213 private String mProviderFriendlyName; 214 215 private boolean mIsCarrierAp = false; 216 /** 217 * The EAP type {@link WifiEnterpriseConfig.Eap} associated with this AP if it is a carrier AP. 218 */ 219 private int mCarrierApEapType = WifiEnterpriseConfig.Eap.NONE; 220 private String mCarrierName = null; 221 222 public AccessPoint(Context context, Bundle savedState) { 223 mContext = context; 224 mConfig = savedState.getParcelable(KEY_CONFIG); 225 if (mConfig != null) { 226 loadConfig(mConfig); 227 } 228 if (savedState.containsKey(KEY_SSID)) { 229 ssid = savedState.getString(KEY_SSID); 230 } 231 if (savedState.containsKey(KEY_SECURITY)) { 232 security = savedState.getInt(KEY_SECURITY); 233 } 234 if (savedState.containsKey(KEY_SPEED)) { 235 mSpeed = savedState.getInt(KEY_SPEED); 236 } 237 if (savedState.containsKey(KEY_PSKTYPE)) { 238 pskType = savedState.getInt(KEY_PSKTYPE); 239 } 240 mInfo = savedState.getParcelable(KEY_WIFIINFO); 241 if (savedState.containsKey(KEY_NETWORKINFO)) { 242 mNetworkInfo = savedState.getParcelable(KEY_NETWORKINFO); 243 } 244 if (savedState.containsKey(KEY_SCANRESULTCACHE)) { 245 ArrayList<ScanResult> scanResultArrayList = 246 savedState.getParcelableArrayList(KEY_SCANRESULTCACHE); 247 mScanResultCache.clear(); 248 for (ScanResult result : scanResultArrayList) { 249 mScanResultCache.put(result.BSSID, result); 250 } 251 } 252 if (savedState.containsKey(KEY_SCOREDNETWORKCACHE)) { 253 ArrayList<TimestampedScoredNetwork> scoredNetworkArrayList = 254 savedState.getParcelableArrayList(KEY_SCOREDNETWORKCACHE); 255 for (TimestampedScoredNetwork timedScore : scoredNetworkArrayList) { 256 mScoredNetworkCache.put(timedScore.getScore().networkKey.wifiKey.bssid, timedScore); 257 } 258 } 259 if (savedState.containsKey(KEY_FQDN)) { 260 mFqdn = savedState.getString(KEY_FQDN); 261 } 262 if (savedState.containsKey(KEY_PROVIDER_FRIENDLY_NAME)) { 263 mProviderFriendlyName = savedState.getString(KEY_PROVIDER_FRIENDLY_NAME); 264 } 265 if (savedState.containsKey(KEY_IS_CARRIER_AP)) { 266 mIsCarrierAp = savedState.getBoolean(KEY_IS_CARRIER_AP); 267 } 268 if (savedState.containsKey(KEY_CARRIER_AP_EAP_TYPE)) { 269 mCarrierApEapType = savedState.getInt(KEY_CARRIER_AP_EAP_TYPE); 270 } 271 if (savedState.containsKey(KEY_CARRIER_NAME)) { 272 mCarrierName = savedState.getString(KEY_CARRIER_NAME); 273 } 274 update(mConfig, mInfo, mNetworkInfo); 275 276 // Do not evict old scan results on initial creation 277 updateRssi(); 278 updateSeen(); 279 mId = sLastId.incrementAndGet(); 280 } 281 282 public AccessPoint(Context context, WifiConfiguration config) { 283 mContext = context; 284 loadConfig(config); 285 mId = sLastId.incrementAndGet(); 286 } 287 288 /** 289 * Initialize an AccessPoint object for a {@link PasspointConfiguration}. This is mainly 290 * used by "Saved Networks" page for managing the saved {@link PasspointConfiguration}. 291 */ 292 public AccessPoint(Context context, PasspointConfiguration config) { 293 mContext = context; 294 mFqdn = config.getHomeSp().getFqdn(); 295 mProviderFriendlyName = config.getHomeSp().getFriendlyName(); 296 mId = sLastId.incrementAndGet(); 297 } 298 299 AccessPoint(Context context, AccessPoint other) { 300 mContext = context; 301 copyFrom(other); 302 } 303 304 AccessPoint(Context context, ScanResult result) { 305 mContext = context; 306 initWithScanResult(result); 307 mId = sLastId.incrementAndGet(); 308 } 309 310 /** 311 * Copy accesspoint information. NOTE: We do not copy tag information because that is never 312 * set on the internal copy. 313 * @param that 314 */ 315 void copyFrom(AccessPoint that) { 316 that.evictOldScanResults(); 317 this.ssid = that.ssid; 318 this.bssid = that.bssid; 319 this.security = that.security; 320 this.networkId = that.networkId; 321 this.pskType = that.pskType; 322 this.mConfig = that.mConfig; //TODO: Watch out, this object is mutated. 323 this.mRssi = that.mRssi; 324 this.mSeen = that.mSeen; 325 this.mInfo = that.mInfo; 326 this.mNetworkInfo = that.mNetworkInfo; 327 this.mScanResultCache.clear(); 328 this.mScanResultCache.putAll(that.mScanResultCache); 329 this.mScoredNetworkCache.clear(); 330 this.mScoredNetworkCache.putAll(that.mScoredNetworkCache); 331 this.mId = that.mId; 332 this.mSpeed = that.mSpeed; 333 this.mIsScoredNetworkMetered = that.mIsScoredNetworkMetered; 334 this.mIsCarrierAp = that.mIsCarrierAp; 335 this.mCarrierApEapType = that.mCarrierApEapType; 336 this.mCarrierName = that.mCarrierName; 337 } 338 339 /** 340 * Returns a negative integer, zero, or a positive integer if this AccessPoint is less than, 341 * equal to, or greater than the other AccessPoint. 342 * 343 * Sort order rules for AccessPoints: 344 * 1. Active before inactive 345 * 2. Reachable before unreachable 346 * 3. Saved before unsaved 347 * 4. Network speed value 348 * 5. Stronger signal before weaker signal 349 * 6. SSID alphabetically 350 * 351 * Note that AccessPoints with a signal are usually also Reachable, 352 * and will thus appear before unreachable saved AccessPoints. 353 */ 354 @Override 355 public int compareTo(@NonNull AccessPoint other) { 356 // Active one goes first. 357 if (isActive() && !other.isActive()) return -1; 358 if (!isActive() && other.isActive()) return 1; 359 360 // Reachable one goes before unreachable one. 361 if (isReachable() && !other.isReachable()) return -1; 362 if (!isReachable() && other.isReachable()) return 1; 363 364 // Configured (saved) one goes before unconfigured one. 365 if (isSaved() && !other.isSaved()) return -1; 366 if (!isSaved() && other.isSaved()) return 1; 367 368 // Faster speeds go before slower speeds - but only if visible change in speed label 369 if (getSpeed() != other.getSpeed()) { 370 return other.getSpeed() - getSpeed(); 371 } 372 373 // Sort by signal strength, bucketed by level 374 int difference = WifiManager.calculateSignalLevel(other.mRssi, SIGNAL_LEVELS) 375 - WifiManager.calculateSignalLevel(mRssi, SIGNAL_LEVELS); 376 if (difference != 0) { 377 return difference; 378 } 379 380 // Sort by ssid. 381 difference = getSsidStr().compareToIgnoreCase(other.getSsidStr()); 382 if (difference != 0) { 383 return difference; 384 } 385 386 // Do a case sensitive comparison to distinguish SSIDs that differ in case only 387 return getSsidStr().compareTo(other.getSsidStr()); 388 } 389 390 @Override 391 public boolean equals(Object other) { 392 if (!(other instanceof AccessPoint)) return false; 393 return (this.compareTo((AccessPoint) other) == 0); 394 } 395 396 @Override 397 public int hashCode() { 398 int result = 0; 399 if (mInfo != null) result += 13 * mInfo.hashCode(); 400 result += 19 * mRssi; 401 result += 23 * networkId; 402 result += 29 * ssid.hashCode(); 403 return result; 404 } 405 406 @Override 407 public String toString() { 408 StringBuilder builder = new StringBuilder().append("AccessPoint(") 409 .append(ssid); 410 if (bssid != null) { 411 builder.append(":").append(bssid); 412 } 413 if (isSaved()) { 414 builder.append(',').append("saved"); 415 } 416 if (isActive()) { 417 builder.append(',').append("active"); 418 } 419 if (isEphemeral()) { 420 builder.append(',').append("ephemeral"); 421 } 422 if (isConnectable()) { 423 builder.append(',').append("connectable"); 424 } 425 if (security != SECURITY_NONE) { 426 builder.append(',').append(securityToString(security, pskType)); 427 } 428 builder.append(",level=").append(getLevel()); 429 if (mSpeed != Speed.NONE) { 430 builder.append(",speed=").append(mSpeed); 431 } 432 builder.append(",metered=").append(isMetered()); 433 434 return builder.append(')').toString(); 435 } 436 437 /** 438 * Updates the AccessPoint rankingScore, metering, and speed, returning true if the data has 439 * changed. 440 * 441 * @param scoreCache The score cache to use to retrieve scores. 442 * @param scoringUiEnabled Whether to show scoring and badging UI. 443 */ 444 boolean update(WifiNetworkScoreCache scoreCache, boolean scoringUiEnabled) { 445 boolean scoreChanged = false; 446 if (scoringUiEnabled) { 447 scoreChanged = updateScores(scoreCache); 448 } 449 return updateMetered(scoreCache) || scoreChanged; 450 } 451 452 /** 453 * Updates the AccessPoint rankingScore and speed, returning true if the data has changed. 454 * 455 * <p>Any cached {@link TimestampedScoredNetwork} objects older than 456 * {@link #MAX_CACHED_SCORE_AGE_MILLIS} will be removed when this method is invoked. 457 * 458 * <p>Precondition: {@link #mRssi} is up to date before invoking this method. 459 * 460 * @param scoreCache The score cache to use to retrieve scores. 461 * @return true if the set speed has changed 462 */ 463 private boolean updateScores(WifiNetworkScoreCache scoreCache) { 464 long nowMillis = SystemClock.elapsedRealtime(); 465 for (ScanResult result : mScanResultCache.values()) { 466 ScoredNetwork score = scoreCache.getScoredNetwork(result); 467 if (score == null) { 468 continue; 469 } 470 TimestampedScoredNetwork timedScore = mScoredNetworkCache.get(result.BSSID); 471 if (timedScore == null) { 472 mScoredNetworkCache.put( 473 result.BSSID, new TimestampedScoredNetwork(score, nowMillis)); 474 } else { 475 // Update data since the has been seen in the score cache 476 timedScore.update(score, nowMillis); 477 } 478 } 479 480 // Remove old cached networks 481 long evictionCutoff = nowMillis - MAX_CACHED_SCORE_AGE_MILLIS; 482 Iterator<TimestampedScoredNetwork> iterator = mScoredNetworkCache.values().iterator(); 483 iterator.forEachRemaining(timestampedScoredNetwork -> { 484 if (timestampedScoredNetwork.getUpdatedTimestampMillis() < evictionCutoff) { 485 iterator.remove(); 486 } 487 }); 488 489 return updateSpeed(); 490 } 491 492 /** 493 * Updates the internal speed, returning true if the update resulted in a speed label change. 494 */ 495 private boolean updateSpeed() { 496 int oldSpeed = mSpeed; 497 mSpeed = generateAverageSpeedForSsid(); 498 499 // set speed to the connected ScanResult if the AccessPoint is the active network 500 if (isActive() && mInfo != null) { 501 TimestampedScoredNetwork timedScore = mScoredNetworkCache.get(mInfo.getBSSID()); 502 if (timedScore != null) { 503 if (Log.isLoggable(TAG, Log.DEBUG)) { 504 Log.d(TAG, "Set score using specific access point curve for connected AP: " 505 + getSsidStr()); 506 } 507 // TODO(b/63073866): Map using getLevel rather than specific rssi value so score 508 // doesn't change without a visible wifi bar change. 509 int speed = timedScore.getScore().calculateBadge(mInfo.getRssi()); 510 if (speed != Speed.NONE) { 511 mSpeed = speed; 512 } 513 } 514 } 515 516 boolean changed = oldSpeed != mSpeed; 517 if(WifiTracker.sVerboseLogging && changed) { 518 Log.i(TAG, String.format("%s: Set speed to %d", ssid, mSpeed)); 519 } 520 return changed; 521 } 522 523 /** Creates a speed value for the current {@link #mRssi} by averaging all non zero badges. */ 524 @Speed private int generateAverageSpeedForSsid() { 525 if (mScoredNetworkCache.isEmpty()) { 526 return Speed.NONE; 527 } 528 529 if (Log.isLoggable(TAG, Log.DEBUG)) { 530 Log.d(TAG, String.format("Generating fallbackspeed for %s using cache: %s", 531 getSsidStr(), mScoredNetworkCache)); 532 } 533 534 int count = 0; 535 int totalSpeed = 0; 536 for (TimestampedScoredNetwork timedScore : mScoredNetworkCache.values()) { 537 int speed = timedScore.getScore().calculateBadge(mRssi); 538 if (speed != Speed.NONE) { 539 count++; 540 totalSpeed += speed; 541 } 542 } 543 int speed = count == 0 ? Speed.NONE : totalSpeed / count; 544 if (WifiTracker.sVerboseLogging) { 545 Log.i(TAG, String.format("%s generated fallback speed is: %d", getSsidStr(), speed)); 546 } 547 return roundToClosestSpeedEnum(speed); 548 } 549 550 /** 551 * Updates the AccessPoint's metering based on {@link ScoredNetwork#meteredHint}, returning 552 * true if the metering changed. 553 */ 554 private boolean updateMetered(WifiNetworkScoreCache scoreCache) { 555 boolean oldMetering = mIsScoredNetworkMetered; 556 mIsScoredNetworkMetered = false; 557 558 if (isActive() && mInfo != null) { 559 NetworkKey key = new NetworkKey(new WifiKey( 560 AccessPoint.convertToQuotedString(ssid), mInfo.getBSSID())); 561 ScoredNetwork score = scoreCache.getScoredNetwork(key); 562 if (score != null) { 563 mIsScoredNetworkMetered |= score.meteredHint; 564 } 565 } else { 566 for (ScanResult result : mScanResultCache.values()) { 567 ScoredNetwork score = scoreCache.getScoredNetwork(result); 568 if (score == null) { 569 continue; 570 } 571 mIsScoredNetworkMetered |= score.meteredHint; 572 } 573 } 574 return oldMetering == mIsScoredNetworkMetered; 575 } 576 577 private void evictOldScanResults() { 578 long nowMs = SystemClock.elapsedRealtime(); 579 for (Iterator<ScanResult> iter = mScanResultCache.values().iterator(); iter.hasNext(); ) { 580 ScanResult result = iter.next(); 581 // result timestamp is in microseconds 582 if (nowMs - result.timestamp / 1000 > MAX_SCAN_RESULT_AGE_MILLIS) { 583 iter.remove(); 584 } 585 } 586 } 587 588 public boolean matches(ScanResult result) { 589 return ssid.equals(result.SSID) && security == getSecurity(result); 590 } 591 592 public boolean matches(WifiConfiguration config) { 593 if (config.isPasspoint() && mConfig != null && mConfig.isPasspoint()) { 594 return ssid.equals(removeDoubleQuotes(config.SSID)) && config.FQDN.equals(mConfig.FQDN); 595 } else { 596 return ssid.equals(removeDoubleQuotes(config.SSID)) 597 && security == getSecurity(config) 598 && (mConfig == null || mConfig.shared == config.shared); 599 } 600 } 601 602 public WifiConfiguration getConfig() { 603 return mConfig; 604 } 605 606 public String getPasspointFqdn() { 607 return mFqdn; 608 } 609 610 public void clearConfig() { 611 mConfig = null; 612 networkId = WifiConfiguration.INVALID_NETWORK_ID; 613 } 614 615 public WifiInfo getInfo() { 616 return mInfo; 617 } 618 619 /** 620 * Returns the number of levels to show for a Wifi icon, from 0 to {@link #SIGNAL_LEVELS}-1. 621 * 622 * <p>Use {@#isReachable()} to determine if an AccessPoint is in range, as this method will 623 * always return at least 0. 624 */ 625 public int getLevel() { 626 return WifiManager.calculateSignalLevel(mRssi, SIGNAL_LEVELS); 627 } 628 629 public int getRssi() { 630 return mRssi; 631 } 632 633 /** 634 * Updates {@link #mRssi}. 635 * 636 * <p>If the given connection is active, the existing value of {@link #mRssi} will be returned. 637 * If the given AccessPoint is not active, a value will be calculated from previous scan 638 * results, returning the best RSSI for all matching AccessPoints averaged with the previous 639 * value. If the access point is not connected and there are no scan results, the rssi will be 640 * set to {@link #UNREACHABLE_RSSI}. 641 */ 642 private void updateRssi() { 643 if (this.isActive()) { 644 return; 645 } 646 647 int rssi = UNREACHABLE_RSSI; 648 for (ScanResult result : mScanResultCache.values()) { 649 if (result.level > rssi) { 650 rssi = result.level; 651 } 652 } 653 654 if (rssi != UNREACHABLE_RSSI && mRssi != UNREACHABLE_RSSI) { 655 mRssi = (mRssi + rssi) / 2; // half-life previous value 656 } else { 657 mRssi = rssi; 658 } 659 } 660 661 /** Updates {@link #mSeen} based on the scan result cache. */ 662 private void updateSeen() { 663 long seen = 0; 664 for (ScanResult result : mScanResultCache.values()) { 665 if (result.timestamp > seen) { 666 seen = result.timestamp; 667 } 668 } 669 670 // Only replace the previous value if we have a recent scan result to use 671 if (seen != 0) { 672 mSeen = seen; 673 } 674 } 675 676 /** 677 * Returns if the network should be considered metered. 678 */ 679 public boolean isMetered() { 680 return mIsScoredNetworkMetered 681 || WifiConfiguration.isMetered(mConfig, mInfo); 682 } 683 684 public NetworkInfo getNetworkInfo() { 685 return mNetworkInfo; 686 } 687 688 public int getSecurity() { 689 return security; 690 } 691 692 public String getSecurityString(boolean concise) { 693 Context context = mContext; 694 if (isPasspoint() || isPasspointConfig()) { 695 return concise ? context.getString(R.string.wifi_security_short_eap) : 696 context.getString(R.string.wifi_security_eap); 697 } 698 switch(security) { 699 case SECURITY_EAP: 700 return concise ? context.getString(R.string.wifi_security_short_eap) : 701 context.getString(R.string.wifi_security_eap); 702 case SECURITY_PSK: 703 switch (pskType) { 704 case PSK_WPA: 705 return concise ? context.getString(R.string.wifi_security_short_wpa) : 706 context.getString(R.string.wifi_security_wpa); 707 case PSK_WPA2: 708 return concise ? context.getString(R.string.wifi_security_short_wpa2) : 709 context.getString(R.string.wifi_security_wpa2); 710 case PSK_WPA_WPA2: 711 return concise ? context.getString(R.string.wifi_security_short_wpa_wpa2) : 712 context.getString(R.string.wifi_security_wpa_wpa2); 713 case PSK_UNKNOWN: 714 default: 715 return concise ? context.getString(R.string.wifi_security_short_psk_generic) 716 : context.getString(R.string.wifi_security_psk_generic); 717 } 718 case SECURITY_WEP: 719 return concise ? context.getString(R.string.wifi_security_short_wep) : 720 context.getString(R.string.wifi_security_wep); 721 case SECURITY_NONE: 722 default: 723 return concise ? "" : context.getString(R.string.wifi_security_none); 724 } 725 } 726 727 public String getSsidStr() { 728 return ssid; 729 } 730 731 public String getBssid() { 732 return bssid; 733 } 734 735 public CharSequence getSsid() { 736 final SpannableString str = new SpannableString(ssid); 737 str.setSpan(new TtsSpan.TelephoneBuilder(ssid).build(), 0, ssid.length(), 738 Spannable.SPAN_INCLUSIVE_INCLUSIVE); 739 return str; 740 } 741 742 public String getConfigName() { 743 if (mConfig != null && mConfig.isPasspoint()) { 744 return mConfig.providerFriendlyName; 745 } else if (mFqdn != null) { 746 return mProviderFriendlyName; 747 } else { 748 return ssid; 749 } 750 } 751 752 public DetailedState getDetailedState() { 753 if (mNetworkInfo != null) { 754 return mNetworkInfo.getDetailedState(); 755 } 756 Log.w(TAG, "NetworkInfo is null, cannot return detailed state"); 757 return null; 758 } 759 760 public boolean isCarrierAp() { 761 return mIsCarrierAp; 762 } 763 764 public int getCarrierApEapType() { 765 return mCarrierApEapType; 766 } 767 768 public String getCarrierName() { 769 return mCarrierName; 770 } 771 772 public String getSavedNetworkSummary() { 773 WifiConfiguration config = mConfig; 774 if (config != null) { 775 PackageManager pm = mContext.getPackageManager(); 776 String systemName = pm.getNameForUid(android.os.Process.SYSTEM_UID); 777 int userId = UserHandle.getUserId(config.creatorUid); 778 ApplicationInfo appInfo = null; 779 if (config.creatorName != null && config.creatorName.equals(systemName)) { 780 appInfo = mContext.getApplicationInfo(); 781 } else { 782 try { 783 IPackageManager ipm = AppGlobals.getPackageManager(); 784 appInfo = ipm.getApplicationInfo(config.creatorName, 0 /* flags */, userId); 785 } catch (RemoteException rex) { 786 } 787 } 788 if (appInfo != null && 789 !appInfo.packageName.equals(mContext.getString(R.string.settings_package)) && 790 !appInfo.packageName.equals( 791 mContext.getString(R.string.certinstaller_package))) { 792 return mContext.getString(R.string.saved_network, appInfo.loadLabel(pm)); 793 } 794 } 795 return ""; 796 } 797 798 public String getSummary() { 799 return getSettingsSummary(mConfig); 800 } 801 802 public String getSettingsSummary() { 803 return getSettingsSummary(mConfig); 804 } 805 806 private String getSettingsSummary(WifiConfiguration config) { 807 // Update to new summary 808 StringBuilder summary = new StringBuilder(); 809 810 if (isActive() && config != null && config.isPasspoint()) { 811 // This is the active connection on passpoint 812 summary.append(getSummary(mContext, getDetailedState(), 813 false, config.providerFriendlyName)); 814 } else if (isActive() && config != null && getDetailedState() == DetailedState.CONNECTED 815 && mIsCarrierAp) { 816 summary.append(String.format(mContext.getString(R.string.connected_via_carrier), mCarrierName)); 817 } else if (isActive()) { 818 // This is the active connection on non-passpoint network 819 summary.append(getSummary(mContext, getDetailedState(), 820 mInfo != null && mInfo.isEphemeral())); 821 } else if (config != null && config.isPasspoint() 822 && config.getNetworkSelectionStatus().isNetworkEnabled()) { 823 String format = mContext.getString(R.string.available_via_passpoint); 824 summary.append(String.format(format, config.providerFriendlyName)); 825 } else if (config != null && config.hasNoInternetAccess()) { 826 int messageID = config.getNetworkSelectionStatus().isNetworkPermanentlyDisabled() 827 ? R.string.wifi_no_internet_no_reconnect 828 : R.string.wifi_no_internet; 829 summary.append(mContext.getString(messageID)); 830 } else if (config != null && !config.getNetworkSelectionStatus().isNetworkEnabled()) { 831 WifiConfiguration.NetworkSelectionStatus networkStatus = 832 config.getNetworkSelectionStatus(); 833 switch (networkStatus.getNetworkSelectionDisableReason()) { 834 case WifiConfiguration.NetworkSelectionStatus.DISABLED_AUTHENTICATION_FAILURE: 835 summary.append(mContext.getString(R.string.wifi_disabled_password_failure)); 836 break; 837 case WifiConfiguration.NetworkSelectionStatus.DISABLED_BY_WRONG_PASSWORD: 838 summary.append(mContext.getString(R.string.wifi_check_password_try_again)); 839 break; 840 case WifiConfiguration.NetworkSelectionStatus.DISABLED_DHCP_FAILURE: 841 case WifiConfiguration.NetworkSelectionStatus.DISABLED_DNS_FAILURE: 842 summary.append(mContext.getString(R.string.wifi_disabled_network_failure)); 843 break; 844 case WifiConfiguration.NetworkSelectionStatus.DISABLED_ASSOCIATION_REJECTION: 845 summary.append(mContext.getString(R.string.wifi_disabled_generic)); 846 break; 847 } 848 } else if (config != null && config.getNetworkSelectionStatus().isNotRecommended()) { 849 summary.append(mContext.getString(R.string.wifi_disabled_by_recommendation_provider)); 850 } else if (mIsCarrierAp) { 851 summary.append(String.format(mContext.getString(R.string.available_via_carrier), mCarrierName)); 852 } else if (!isReachable()) { // Wifi out of range 853 summary.append(mContext.getString(R.string.wifi_not_in_range)); 854 } else { // In range, not disabled. 855 if (config != null) { // Is saved network 856 // Last attempt to connect to this failed. Show reason why 857 switch (config.recentFailure.getAssociationStatus()) { 858 case WifiConfiguration.RecentFailure.STATUS_AP_UNABLE_TO_HANDLE_NEW_STA: 859 summary.append(mContext.getString( 860 R.string.wifi_ap_unable_to_handle_new_sta)); 861 break; 862 default: 863 // "Saved" 864 summary.append(mContext.getString(R.string.wifi_remembered)); 865 break; 866 } 867 } 868 } 869 870 if (WifiTracker.sVerboseLogging) { 871 // Add RSSI/band information for this config, what was seen up to 6 seconds ago 872 // verbose WiFi Logging is only turned on thru developers settings 873 if (isActive() && mInfo != null) { 874 summary.append(" f=" + Integer.toString(mInfo.getFrequency())); 875 } 876 summary.append(" " + getVisibilityStatus()); 877 if (config != null && !config.getNetworkSelectionStatus().isNetworkEnabled()) { 878 summary.append(" (" + config.getNetworkSelectionStatus().getNetworkStatusString()); 879 if (config.getNetworkSelectionStatus().getDisableTime() > 0) { 880 long now = System.currentTimeMillis(); 881 long diff = (now - config.getNetworkSelectionStatus().getDisableTime()) / 1000; 882 long sec = diff%60; //seconds 883 long min = (diff/60)%60; //minutes 884 long hour = (min/60)%60; //hours 885 summary.append(", "); 886 if (hour > 0) summary.append(Long.toString(hour) + "h "); 887 summary.append( Long.toString(min) + "m "); 888 summary.append( Long.toString(sec) + "s "); 889 } 890 summary.append(")"); 891 } 892 893 if (config != null) { 894 WifiConfiguration.NetworkSelectionStatus networkStatus = 895 config.getNetworkSelectionStatus(); 896 for (int index = WifiConfiguration.NetworkSelectionStatus.NETWORK_SELECTION_ENABLE; 897 index < WifiConfiguration.NetworkSelectionStatus 898 .NETWORK_SELECTION_DISABLED_MAX; index++) { 899 if (networkStatus.getDisableReasonCounter(index) != 0) { 900 summary.append(" " + WifiConfiguration.NetworkSelectionStatus 901 .getNetworkDisableReasonString(index) + "=" 902 + networkStatus.getDisableReasonCounter(index)); 903 } 904 } 905 } 906 } 907 908 // If Speed label and summary are both present, use the preference combination to combine 909 // the two, else return the non-null one. 910 if (getSpeedLabel() != null && summary.length() != 0) { 911 return mContext.getResources().getString( 912 R.string.preference_summary_default_combination, 913 getSpeedLabel(), 914 summary.toString()); 915 } else if (getSpeedLabel() != null) { 916 return getSpeedLabel(); 917 } else { 918 return summary.toString(); 919 } 920 } 921 922 /** 923 * Returns the visibility status of the WifiConfiguration. 924 * 925 * @return autojoin debugging information 926 * TODO: use a string formatter 927 * ["rssi 5Ghz", "num results on 5GHz" / "rssi 5Ghz", "num results on 5GHz"] 928 * For instance [-40,5/-30,2] 929 */ 930 private String getVisibilityStatus() { 931 StringBuilder visibility = new StringBuilder(); 932 StringBuilder scans24GHz = new StringBuilder(); 933 StringBuilder scans5GHz = new StringBuilder(); 934 String bssid = null; 935 936 long now = System.currentTimeMillis(); 937 938 if (isActive() && mInfo != null) { 939 bssid = mInfo.getBSSID(); 940 if (bssid != null) { 941 visibility.append(" ").append(bssid); 942 } 943 visibility.append(" rssi=").append(mInfo.getRssi()); 944 visibility.append(" "); 945 visibility.append(" score=").append(mInfo.score); 946 if (mSpeed != Speed.NONE) { 947 visibility.append(" speed=").append(getSpeedLabel()); 948 } 949 visibility.append(String.format(" tx=%.1f,", mInfo.txSuccessRate)); 950 visibility.append(String.format("%.1f,", mInfo.txRetriesRate)); 951 visibility.append(String.format("%.1f ", mInfo.txBadRate)); 952 visibility.append(String.format("rx=%.1f", mInfo.rxSuccessRate)); 953 } 954 955 int maxRssi5 = WifiConfiguration.INVALID_RSSI; 956 int maxRssi24 = WifiConfiguration.INVALID_RSSI; 957 final int maxDisplayedScans = 4; 958 int num5 = 0; // number of scanned BSSID on 5GHz band 959 int num24 = 0; // number of scanned BSSID on 2.4Ghz band 960 int numBlackListed = 0; 961 evictOldScanResults(); 962 963 // TODO: sort list by RSSI or age 964 for (ScanResult result : mScanResultCache.values()) { 965 if (result.frequency >= LOWER_FREQ_5GHZ 966 && result.frequency <= HIGHER_FREQ_5GHZ) { 967 // Strictly speaking: [4915, 5825] 968 num5++; 969 970 if (result.level > maxRssi5) { 971 maxRssi5 = result.level; 972 } 973 if (num5 <= maxDisplayedScans) { 974 scans5GHz.append(verboseScanResultSummary(result, bssid)); 975 } 976 } else if (result.frequency >= LOWER_FREQ_24GHZ 977 && result.frequency <= HIGHER_FREQ_24GHZ) { 978 // Strictly speaking: [2412, 2482] 979 num24++; 980 981 if (result.level > maxRssi24) { 982 maxRssi24 = result.level; 983 } 984 if (num24 <= maxDisplayedScans) { 985 scans24GHz.append(verboseScanResultSummary(result, bssid)); 986 } 987 } 988 } 989 visibility.append(" ["); 990 if (num24 > 0) { 991 visibility.append("(").append(num24).append(")"); 992 if (num24 > maxDisplayedScans) { 993 visibility.append("max=").append(maxRssi24).append(","); 994 } 995 visibility.append(scans24GHz.toString()); 996 } 997 visibility.append(";"); 998 if (num5 > 0) { 999 visibility.append("(").append(num5).append(")"); 1000 if (num5 > maxDisplayedScans) { 1001 visibility.append("max=").append(maxRssi5).append(","); 1002 } 1003 visibility.append(scans5GHz.toString()); 1004 } 1005 if (numBlackListed > 0) 1006 visibility.append("!").append(numBlackListed); 1007 visibility.append("]"); 1008 1009 return visibility.toString(); 1010 } 1011 1012 @VisibleForTesting 1013 /* package */ String verboseScanResultSummary(ScanResult result, String bssid) { 1014 StringBuilder stringBuilder = new StringBuilder(); 1015 stringBuilder.append(" \n{").append(result.BSSID); 1016 if (result.BSSID.equals(bssid)) { 1017 stringBuilder.append("*"); 1018 } 1019 stringBuilder.append("=").append(result.frequency); 1020 stringBuilder.append(",").append(result.level); 1021 int speed = getSpecificApSpeed(result); 1022 if (speed != Speed.NONE) { 1023 stringBuilder.append(",") 1024 .append(getSpeedLabel(speed)); 1025 } 1026 stringBuilder.append("}"); 1027 return stringBuilder.toString(); 1028 } 1029 1030 @Speed private int getSpecificApSpeed(ScanResult result) { 1031 TimestampedScoredNetwork timedScore = mScoredNetworkCache.get(result.BSSID); 1032 if (timedScore == null) { 1033 return Speed.NONE; 1034 } 1035 // For debugging purposes we may want to use mRssi rather than result.level as the average 1036 // speed wil be determined by mRssi 1037 return timedScore.getScore().calculateBadge(result.level); 1038 } 1039 1040 /** 1041 * Return whether this is the active connection. 1042 * For ephemeral connections (networkId is invalid), this returns false if the network is 1043 * disconnected. 1044 */ 1045 public boolean isActive() { 1046 return mNetworkInfo != null && 1047 (networkId != WifiConfiguration.INVALID_NETWORK_ID || 1048 mNetworkInfo.getState() != State.DISCONNECTED); 1049 } 1050 1051 public boolean isConnectable() { 1052 return getLevel() != -1 && getDetailedState() == null; 1053 } 1054 1055 public boolean isEphemeral() { 1056 return mInfo != null && mInfo.isEphemeral() && 1057 mNetworkInfo != null && mNetworkInfo.getState() != State.DISCONNECTED; 1058 } 1059 1060 /** 1061 * Return true if this AccessPoint represents a Passpoint AP. 1062 */ 1063 public boolean isPasspoint() { 1064 return mConfig != null && mConfig.isPasspoint(); 1065 } 1066 1067 /** 1068 * Return true if this AccessPoint represents a Passpoint provider configuration. 1069 */ 1070 public boolean isPasspointConfig() { 1071 return mFqdn != null; 1072 } 1073 1074 /** 1075 * Return whether the given {@link WifiInfo} is for this access point. 1076 * If the current AP does not have a network Id then the config is used to 1077 * match based on SSID and security. 1078 */ 1079 private boolean isInfoForThisAccessPoint(WifiConfiguration config, WifiInfo info) { 1080 if (isPasspoint() == false && networkId != WifiConfiguration.INVALID_NETWORK_ID) { 1081 return networkId == info.getNetworkId(); 1082 } else if (config != null) { 1083 return matches(config); 1084 } 1085 else { 1086 // Might be an ephemeral connection with no WifiConfiguration. Try matching on SSID. 1087 // (Note that we only do this if the WifiConfiguration explicitly equals INVALID). 1088 // TODO: Handle hex string SSIDs. 1089 return ssid.equals(removeDoubleQuotes(info.getSSID())); 1090 } 1091 } 1092 1093 public boolean isSaved() { 1094 return networkId != WifiConfiguration.INVALID_NETWORK_ID; 1095 } 1096 1097 public Object getTag() { 1098 return mTag; 1099 } 1100 1101 public void setTag(Object tag) { 1102 mTag = tag; 1103 } 1104 1105 /** 1106 * Generate and save a default wifiConfiguration with common values. 1107 * Can only be called for unsecured networks. 1108 */ 1109 public void generateOpenNetworkConfig() { 1110 if (security != SECURITY_NONE) 1111 throw new IllegalStateException(); 1112 if (mConfig != null) 1113 return; 1114 mConfig = new WifiConfiguration(); 1115 mConfig.SSID = AccessPoint.convertToQuotedString(ssid); 1116 mConfig.allowedKeyManagement.set(KeyMgmt.NONE); 1117 } 1118 1119 void loadConfig(WifiConfiguration config) { 1120 ssid = (config.SSID == null ? "" : removeDoubleQuotes(config.SSID)); 1121 bssid = config.BSSID; 1122 security = getSecurity(config); 1123 networkId = config.networkId; 1124 mConfig = config; 1125 } 1126 1127 private void initWithScanResult(ScanResult result) { 1128 ssid = result.SSID; 1129 bssid = result.BSSID; 1130 security = getSecurity(result); 1131 if (security == SECURITY_PSK) 1132 pskType = getPskType(result); 1133 1134 mScanResultCache.put(result.BSSID, result); 1135 updateRssi(); 1136 mSeen = result.timestamp; // even if the timestamp is old it is still valid 1137 mIsCarrierAp = result.isCarrierAp; 1138 mCarrierApEapType = result.carrierApEapType; 1139 mCarrierName = result.carrierName; 1140 } 1141 1142 public void saveWifiState(Bundle savedState) { 1143 if (ssid != null) savedState.putString(KEY_SSID, getSsidStr()); 1144 savedState.putInt(KEY_SECURITY, security); 1145 savedState.putInt(KEY_SPEED, mSpeed); 1146 savedState.putInt(KEY_PSKTYPE, pskType); 1147 if (mConfig != null) savedState.putParcelable(KEY_CONFIG, mConfig); 1148 savedState.putParcelable(KEY_WIFIINFO, mInfo); 1149 evictOldScanResults(); 1150 savedState.putParcelableArrayList(KEY_SCANRESULTCACHE, 1151 new ArrayList<ScanResult>(mScanResultCache.values())); 1152 savedState.putParcelableArrayList(KEY_SCOREDNETWORKCACHE, 1153 new ArrayList<>(mScoredNetworkCache.values())); 1154 if (mNetworkInfo != null) { 1155 savedState.putParcelable(KEY_NETWORKINFO, mNetworkInfo); 1156 } 1157 if (mFqdn != null) { 1158 savedState.putString(KEY_FQDN, mFqdn); 1159 } 1160 if (mProviderFriendlyName != null) { 1161 savedState.putString(KEY_PROVIDER_FRIENDLY_NAME, mProviderFriendlyName); 1162 } 1163 savedState.putBoolean(KEY_IS_CARRIER_AP, mIsCarrierAp); 1164 savedState.putInt(KEY_CARRIER_AP_EAP_TYPE, mCarrierApEapType); 1165 savedState.putString(KEY_CARRIER_NAME, mCarrierName); 1166 } 1167 1168 public void setListener(AccessPointListener listener) { 1169 mAccessPointListener = listener; 1170 } 1171 1172 /** 1173 * Update the AP with the given scan result. 1174 * 1175 * @param result the ScanResult to add to the AccessPoint scan cache 1176 * @param evictOldScanResults whether stale scan results should be removed 1177 * from the cache during this update process 1178 * @return true if the scan result update caused a change in state which would impact ranking 1179 * or AccessPoint rendering (e.g. wifi level, security) 1180 */ 1181 boolean update(ScanResult result, boolean evictOldScanResults) { 1182 if (matches(result)) { 1183 int oldLevel = getLevel(); 1184 1185 /* Add or update the scan result for the BSSID */ 1186 mScanResultCache.put(result.BSSID, result); 1187 if (evictOldScanResults) evictOldScanResults(); 1188 updateSeen(); 1189 updateRssi(); 1190 int newLevel = getLevel(); 1191 1192 if (newLevel > 0 && newLevel != oldLevel) { 1193 // Only update labels on visible rssi changes 1194 updateSpeed(); 1195 if (mAccessPointListener != null) { 1196 mAccessPointListener.onLevelChanged(this); 1197 } 1198 } 1199 // This flag only comes from scans, is not easily saved in config 1200 if (security == SECURITY_PSK) { 1201 pskType = getPskType(result); 1202 } 1203 1204 if (mAccessPointListener != null) { 1205 mAccessPointListener.onAccessPointChanged(this); 1206 } 1207 1208 // The carrier info in the ScanResult is set by the platform based on the SSID and will 1209 // always be the same for all matching scan results. 1210 mIsCarrierAp = result.isCarrierAp; 1211 mCarrierApEapType = result.carrierApEapType; 1212 mCarrierName = result.carrierName; 1213 1214 return true; 1215 } 1216 return false; 1217 } 1218 1219 /** Attempt to update the AccessPoint and return true if an update occurred. */ 1220 public boolean update( 1221 @Nullable WifiConfiguration config, WifiInfo info, NetworkInfo networkInfo) { 1222 boolean updated = false; 1223 final int oldLevel = getLevel(); 1224 if (info != null && isInfoForThisAccessPoint(config, info)) { 1225 updated = (mInfo == null); 1226 if (mConfig != config) { 1227 // We do not set updated = true as we do not want to increase the amount of sorting 1228 // and copying performed in WifiTracker at this time. If issues involving refresh 1229 // are still seen, we will investigate further. 1230 update(config); // Notifies the AccessPointListener of the change 1231 } 1232 if (mRssi != info.getRssi() && info.getRssi() != WifiInfo.INVALID_RSSI) { 1233 mRssi = info.getRssi(); 1234 updated = true; 1235 } else if (mNetworkInfo != null && networkInfo != null 1236 && mNetworkInfo.getDetailedState() != networkInfo.getDetailedState()) { 1237 updated = true; 1238 } 1239 mInfo = info; 1240 mNetworkInfo = networkInfo; 1241 } else if (mInfo != null) { 1242 updated = true; 1243 mInfo = null; 1244 mNetworkInfo = null; 1245 } 1246 if (updated && mAccessPointListener != null) { 1247 mAccessPointListener.onAccessPointChanged(this); 1248 1249 if (oldLevel != getLevel() /* current level */) { 1250 mAccessPointListener.onLevelChanged(this); 1251 } 1252 } 1253 return updated; 1254 } 1255 1256 void update(@Nullable WifiConfiguration config) { 1257 mConfig = config; 1258 networkId = config != null ? config.networkId : WifiConfiguration.INVALID_NETWORK_ID; 1259 if (mAccessPointListener != null) { 1260 mAccessPointListener.onAccessPointChanged(this); 1261 } 1262 } 1263 1264 @VisibleForTesting 1265 void setRssi(int rssi) { 1266 mRssi = rssi; 1267 } 1268 1269 /** Sets the rssi to {@link #UNREACHABLE_RSSI}. */ 1270 void setUnreachable() { 1271 setRssi(AccessPoint.UNREACHABLE_RSSI); 1272 } 1273 1274 int getSpeed() { return mSpeed;} 1275 1276 @Nullable 1277 String getSpeedLabel() { 1278 return getSpeedLabel(mSpeed); 1279 } 1280 1281 @Nullable 1282 @Speed 1283 private int roundToClosestSpeedEnum(int speed) { 1284 if (speed < Speed.SLOW) { 1285 return Speed.NONE; 1286 } else if (speed < (Speed.SLOW + Speed.MODERATE) / 2) { 1287 return Speed.SLOW; 1288 } else if (speed < (Speed.MODERATE + Speed.FAST) / 2) { 1289 return Speed.MODERATE; 1290 } else if (speed < (Speed.FAST + Speed.VERY_FAST) / 2) { 1291 return Speed.FAST; 1292 } else { 1293 return Speed.VERY_FAST; 1294 } 1295 } 1296 1297 @Nullable 1298 private String getSpeedLabel(@Speed int speed) { 1299 switch (speed) { 1300 case Speed.VERY_FAST: 1301 return mContext.getString(R.string.speed_label_very_fast); 1302 case Speed.FAST: 1303 return mContext.getString(R.string.speed_label_fast); 1304 case Speed.MODERATE: 1305 return mContext.getString(R.string.speed_label_okay); 1306 case Speed.SLOW: 1307 return mContext.getString(R.string.speed_label_slow); 1308 case Speed.NONE: 1309 default: 1310 return null; 1311 } 1312 } 1313 1314 /** Return true if the current RSSI is reachable, and false otherwise. */ 1315 public boolean isReachable() { 1316 return mRssi != UNREACHABLE_RSSI; 1317 } 1318 1319 public static String getSummary(Context context, String ssid, DetailedState state, 1320 boolean isEphemeral, String passpointProvider) { 1321 if (state == DetailedState.CONNECTED && ssid == null) { 1322 if (TextUtils.isEmpty(passpointProvider) == false) { 1323 // Special case for connected + passpoint networks. 1324 String format = context.getString(R.string.connected_via_passpoint); 1325 return String.format(format, passpointProvider); 1326 } else if (isEphemeral) { 1327 // Special case for connected + ephemeral networks. 1328 final NetworkScoreManager networkScoreManager = context.getSystemService( 1329 NetworkScoreManager.class); 1330 NetworkScorerAppData scorer = networkScoreManager.getActiveScorer(); 1331 if (scorer != null && scorer.getRecommendationServiceLabel() != null) { 1332 String format = context.getString(R.string.connected_via_network_scorer); 1333 return String.format(format, scorer.getRecommendationServiceLabel()); 1334 } else { 1335 return context.getString(R.string.connected_via_network_scorer_default); 1336 } 1337 } 1338 } 1339 1340 // Case when there is wifi connected without internet connectivity. 1341 final ConnectivityManager cm = (ConnectivityManager) 1342 context.getSystemService(Context.CONNECTIVITY_SERVICE); 1343 if (state == DetailedState.CONNECTED) { 1344 IWifiManager wifiManager = IWifiManager.Stub.asInterface( 1345 ServiceManager.getService(Context.WIFI_SERVICE)); 1346 NetworkCapabilities nc = null; 1347 1348 try { 1349 nc = cm.getNetworkCapabilities(wifiManager.getCurrentNetwork()); 1350 } catch (RemoteException e) {} 1351 1352 if (nc != null) { 1353 if (nc.hasCapability(nc.NET_CAPABILITY_CAPTIVE_PORTAL)) { 1354 int id = context.getResources() 1355 .getIdentifier("network_available_sign_in", "string", "android"); 1356 return context.getString(id); 1357 } else if (!nc.hasCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED)) { 1358 return context.getString(R.string.wifi_connected_no_internet); 1359 } 1360 } 1361 } 1362 if (state == null) { 1363 Log.w(TAG, "state is null, returning empty summary"); 1364 return ""; 1365 } 1366 String[] formats = context.getResources().getStringArray((ssid == null) 1367 ? R.array.wifi_status : R.array.wifi_status_with_ssid); 1368 int index = state.ordinal(); 1369 1370 if (index >= formats.length || formats[index].length() == 0) { 1371 return ""; 1372 } 1373 return String.format(formats[index], ssid); 1374 } 1375 1376 public static String getSummary(Context context, DetailedState state, boolean isEphemeral) { 1377 return getSummary(context, null, state, isEphemeral, null); 1378 } 1379 1380 public static String getSummary(Context context, DetailedState state, boolean isEphemeral, 1381 String passpointProvider) { 1382 return getSummary(context, null, state, isEphemeral, passpointProvider); 1383 } 1384 1385 public static String convertToQuotedString(String string) { 1386 return "\"" + string + "\""; 1387 } 1388 1389 private static int getPskType(ScanResult result) { 1390 boolean wpa = result.capabilities.contains("WPA-PSK"); 1391 boolean wpa2 = result.capabilities.contains("WPA2-PSK"); 1392 if (wpa2 && wpa) { 1393 return PSK_WPA_WPA2; 1394 } else if (wpa2) { 1395 return PSK_WPA2; 1396 } else if (wpa) { 1397 return PSK_WPA; 1398 } else { 1399 Log.w(TAG, "Received abnormal flag string: " + result.capabilities); 1400 return PSK_UNKNOWN; 1401 } 1402 } 1403 1404 private static int getSecurity(ScanResult result) { 1405 if (result.capabilities.contains("WEP")) { 1406 return SECURITY_WEP; 1407 } else if (result.capabilities.contains("PSK")) { 1408 return SECURITY_PSK; 1409 } else if (result.capabilities.contains("EAP")) { 1410 return SECURITY_EAP; 1411 } 1412 return SECURITY_NONE; 1413 } 1414 1415 static int getSecurity(WifiConfiguration config) { 1416 if (config.allowedKeyManagement.get(KeyMgmt.WPA_PSK)) { 1417 return SECURITY_PSK; 1418 } 1419 if (config.allowedKeyManagement.get(KeyMgmt.WPA_EAP) || 1420 config.allowedKeyManagement.get(KeyMgmt.IEEE8021X)) { 1421 return SECURITY_EAP; 1422 } 1423 return (config.wepKeys[0] != null) ? SECURITY_WEP : SECURITY_NONE; 1424 } 1425 1426 public static String securityToString(int security, int pskType) { 1427 if (security == SECURITY_WEP) { 1428 return "WEP"; 1429 } else if (security == SECURITY_PSK) { 1430 if (pskType == PSK_WPA) { 1431 return "WPA"; 1432 } else if (pskType == PSK_WPA2) { 1433 return "WPA2"; 1434 } else if (pskType == PSK_WPA_WPA2) { 1435 return "WPA_WPA2"; 1436 } 1437 return "PSK"; 1438 } else if (security == SECURITY_EAP) { 1439 return "EAP"; 1440 } 1441 return "NONE"; 1442 } 1443 1444 static String removeDoubleQuotes(String string) { 1445 if (TextUtils.isEmpty(string)) { 1446 return ""; 1447 } 1448 int length = string.length(); 1449 if ((length > 1) && (string.charAt(0) == '"') 1450 && (string.charAt(length - 1) == '"')) { 1451 return string.substring(1, length - 1); 1452 } 1453 return string; 1454 } 1455 1456 public interface AccessPointListener { 1457 void onAccessPointChanged(AccessPoint accessPoint); 1458 void onLevelChanged(AccessPoint accessPoint); 1459 } 1460} 1461