AccessPoint.java revision 9bb85d3c4d0698e41dd5a27a534d55d9f983daaf
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.style.TtsSpan; 55import android.util.Log; 56 57import com.android.internal.annotations.VisibleForTesting; 58import com.android.settingslib.R; 59 60import java.lang.annotation.Retention; 61import java.lang.annotation.RetentionPolicy; 62import java.util.ArrayList; 63import java.util.HashMap; 64import java.util.Iterator; 65import java.util.Map; 66import java.util.Objects; 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 of scan results to hold onto while actively scanning. **/ 137 private static final long MAX_SCAN_RESULT_AGE_MILLIS = 15000; 138 139 static final String KEY_NETWORKINFO = "key_networkinfo"; 140 static final String KEY_WIFIINFO = "key_wifiinfo"; 141 static final String KEY_SCANRESULT = "key_scanresult"; 142 static final String KEY_SSID = "key_ssid"; 143 static final String KEY_SECURITY = "key_security"; 144 static final String KEY_SPEED = "key_speed"; 145 static final String KEY_PSKTYPE = "key_psktype"; 146 static final String KEY_SCANRESULTCACHE = "key_scanresultcache"; 147 static final String KEY_SCOREDNETWORKCACHE = "key_scorednetworkcache"; 148 static final String KEY_CONFIG = "key_config"; 149 static final String KEY_FQDN = "key_fqdn"; 150 static final String KEY_PROVIDER_FRIENDLY_NAME = "key_provider_friendly_name"; 151 static final String KEY_IS_CARRIER_AP = "key_is_carrier_ap"; 152 static final String KEY_CARRIER_AP_EAP_TYPE = "key_carrier_ap_eap_type"; 153 static final String KEY_CARRIER_NAME = "key_carrier_name"; 154 static final AtomicInteger sLastId = new AtomicInteger(0); 155 156 /** 157 * These values are matched in string arrays -- changes must be kept in sync 158 */ 159 public static final int SECURITY_NONE = 0; 160 public static final int SECURITY_WEP = 1; 161 public static final int SECURITY_PSK = 2; 162 public static final int SECURITY_EAP = 3; 163 164 private static final int PSK_UNKNOWN = 0; 165 private static final int PSK_WPA = 1; 166 private static final int PSK_WPA2 = 2; 167 private static final int PSK_WPA_WPA2 = 3; 168 169 /** 170 * The number of distinct wifi levels. 171 * 172 * <p>Must keep in sync with {@link R.array.wifi_signal} and {@link WifiManager#RSSI_LEVELS}. 173 */ 174 public static final int SIGNAL_LEVELS = 5; 175 176 public static final int UNREACHABLE_RSSI = Integer.MIN_VALUE; 177 178 private final Context mContext; 179 180 private String ssid; 181 private String bssid; 182 private int security; 183 private int networkId = WifiConfiguration.INVALID_NETWORK_ID; 184 185 private int pskType = PSK_UNKNOWN; 186 187 private WifiConfiguration mConfig; 188 189 private int mRssi = UNREACHABLE_RSSI; 190 191 private WifiInfo mInfo; 192 private NetworkInfo mNetworkInfo; 193 AccessPointListener mAccessPointListener; 194 195 private Object mTag; 196 197 @Speed private int mSpeed = Speed.NONE; 198 private boolean mIsScoredNetworkMetered = false; 199 200 // used to co-relate internal vs returned accesspoint. 201 int mId; 202 203 /** 204 * Information associated with the {@link PasspointConfiguration}. Only maintaining 205 * the relevant info to preserve spaces. 206 */ 207 private String mFqdn; 208 private String mProviderFriendlyName; 209 210 private boolean mIsCarrierAp = false; 211 /** 212 * The EAP type {@link WifiEnterpriseConfig.Eap} associated with this AP if it is a carrier AP. 213 */ 214 private int mCarrierApEapType = WifiEnterpriseConfig.Eap.NONE; 215 private String mCarrierName = null; 216 217 public AccessPoint(Context context, Bundle savedState) { 218 mContext = context; 219 mConfig = savedState.getParcelable(KEY_CONFIG); 220 if (mConfig != null) { 221 loadConfig(mConfig); 222 } 223 if (savedState.containsKey(KEY_SSID)) { 224 ssid = savedState.getString(KEY_SSID); 225 } 226 if (savedState.containsKey(KEY_SECURITY)) { 227 security = savedState.getInt(KEY_SECURITY); 228 } 229 if (savedState.containsKey(KEY_SPEED)) { 230 mSpeed = savedState.getInt(KEY_SPEED); 231 } 232 if (savedState.containsKey(KEY_PSKTYPE)) { 233 pskType = savedState.getInt(KEY_PSKTYPE); 234 } 235 mInfo = savedState.getParcelable(KEY_WIFIINFO); 236 if (savedState.containsKey(KEY_NETWORKINFO)) { 237 mNetworkInfo = savedState.getParcelable(KEY_NETWORKINFO); 238 } 239 if (savedState.containsKey(KEY_SCANRESULTCACHE)) { 240 ArrayList<ScanResult> scanResultArrayList = 241 savedState.getParcelableArrayList(KEY_SCANRESULTCACHE); 242 mScanResultCache.clear(); 243 for (ScanResult result : scanResultArrayList) { 244 mScanResultCache.put(result.BSSID, result); 245 } 246 } 247 if (savedState.containsKey(KEY_SCOREDNETWORKCACHE)) { 248 ArrayList<TimestampedScoredNetwork> scoredNetworkArrayList = 249 savedState.getParcelableArrayList(KEY_SCOREDNETWORKCACHE); 250 for (TimestampedScoredNetwork timedScore : scoredNetworkArrayList) { 251 mScoredNetworkCache.put(timedScore.getScore().networkKey.wifiKey.bssid, timedScore); 252 } 253 } 254 if (savedState.containsKey(KEY_FQDN)) { 255 mFqdn = savedState.getString(KEY_FQDN); 256 } 257 if (savedState.containsKey(KEY_PROVIDER_FRIENDLY_NAME)) { 258 mProviderFriendlyName = savedState.getString(KEY_PROVIDER_FRIENDLY_NAME); 259 } 260 if (savedState.containsKey(KEY_IS_CARRIER_AP)) { 261 mIsCarrierAp = savedState.getBoolean(KEY_IS_CARRIER_AP); 262 } 263 if (savedState.containsKey(KEY_CARRIER_AP_EAP_TYPE)) { 264 mCarrierApEapType = savedState.getInt(KEY_CARRIER_AP_EAP_TYPE); 265 } 266 if (savedState.containsKey(KEY_CARRIER_NAME)) { 267 mCarrierName = savedState.getString(KEY_CARRIER_NAME); 268 } 269 update(mConfig, mInfo, mNetworkInfo); 270 271 // Do not evict old scan results on initial creation 272 updateRssi(); 273 mId = sLastId.incrementAndGet(); 274 } 275 276 public AccessPoint(Context context, WifiConfiguration config) { 277 mContext = context; 278 loadConfig(config); 279 mId = sLastId.incrementAndGet(); 280 } 281 282 /** 283 * Initialize an AccessPoint object for a {@link PasspointConfiguration}. This is mainly 284 * used by "Saved Networks" page for managing the saved {@link PasspointConfiguration}. 285 */ 286 public AccessPoint(Context context, PasspointConfiguration config) { 287 mContext = context; 288 mFqdn = config.getHomeSp().getFqdn(); 289 mProviderFriendlyName = config.getHomeSp().getFriendlyName(); 290 mId = sLastId.incrementAndGet(); 291 } 292 293 AccessPoint(Context context, AccessPoint other) { 294 mContext = context; 295 copyFrom(other); 296 } 297 298 AccessPoint(Context context, ScanResult result) { 299 mContext = context; 300 initWithScanResult(result); 301 mId = sLastId.incrementAndGet(); 302 } 303 304 /** 305 * Copy accesspoint information. NOTE: We do not copy tag information because that is never 306 * set on the internal copy. 307 * @param that 308 */ 309 void copyFrom(AccessPoint that) { 310 that.evictOldScanResults(); 311 this.ssid = that.ssid; 312 this.bssid = that.bssid; 313 this.security = that.security; 314 this.networkId = that.networkId; 315 this.pskType = that.pskType; 316 this.mConfig = that.mConfig; //TODO: Watch out, this object is mutated. 317 this.mRssi = that.mRssi; 318 this.mInfo = that.mInfo; 319 this.mNetworkInfo = that.mNetworkInfo; 320 this.mScanResultCache.clear(); 321 this.mScanResultCache.putAll(that.mScanResultCache); 322 this.mScoredNetworkCache.clear(); 323 this.mScoredNetworkCache.putAll(that.mScoredNetworkCache); 324 this.mId = that.mId; 325 this.mSpeed = that.mSpeed; 326 this.mIsScoredNetworkMetered = that.mIsScoredNetworkMetered; 327 this.mIsCarrierAp = that.mIsCarrierAp; 328 this.mCarrierApEapType = that.mCarrierApEapType; 329 this.mCarrierName = that.mCarrierName; 330 } 331 332 /** 333 * Returns a negative integer, zero, or a positive integer if this AccessPoint is less than, 334 * equal to, or greater than the other AccessPoint. 335 * 336 * Sort order rules for AccessPoints: 337 * 1. Active before inactive 338 * 2. Reachable before unreachable 339 * 3. Saved before unsaved 340 * 4. Network speed value 341 * 5. Stronger signal before weaker signal 342 * 6. SSID alphabetically 343 * 344 * Note that AccessPoints with a signal are usually also Reachable, 345 * and will thus appear before unreachable saved AccessPoints. 346 */ 347 @Override 348 public int compareTo(@NonNull AccessPoint other) { 349 // Active one goes first. 350 if (isActive() && !other.isActive()) return -1; 351 if (!isActive() && other.isActive()) return 1; 352 353 // Reachable one goes before unreachable one. 354 if (isReachable() && !other.isReachable()) return -1; 355 if (!isReachable() && other.isReachable()) return 1; 356 357 // Configured (saved) one goes before unconfigured one. 358 if (isSaved() && !other.isSaved()) return -1; 359 if (!isSaved() && other.isSaved()) return 1; 360 361 // Faster speeds go before slower speeds - but only if visible change in speed label 362 if (getSpeed() != other.getSpeed()) { 363 return other.getSpeed() - getSpeed(); 364 } 365 366 // Sort by signal strength, bucketed by level 367 int difference = WifiManager.calculateSignalLevel(other.mRssi, SIGNAL_LEVELS) 368 - WifiManager.calculateSignalLevel(mRssi, SIGNAL_LEVELS); 369 if (difference != 0) { 370 return difference; 371 } 372 373 // Sort by ssid. 374 difference = getSsidStr().compareToIgnoreCase(other.getSsidStr()); 375 if (difference != 0) { 376 return difference; 377 } 378 379 // Do a case sensitive comparison to distinguish SSIDs that differ in case only 380 return getSsidStr().compareTo(other.getSsidStr()); 381 } 382 383 @Override 384 public boolean equals(Object other) { 385 if (!(other instanceof AccessPoint)) return false; 386 return (this.compareTo((AccessPoint) other) == 0); 387 } 388 389 @Override 390 public int hashCode() { 391 int result = 0; 392 if (mInfo != null) result += 13 * mInfo.hashCode(); 393 result += 19 * mRssi; 394 result += 23 * networkId; 395 result += 29 * ssid.hashCode(); 396 return result; 397 } 398 399 @Override 400 public String toString() { 401 StringBuilder builder = new StringBuilder().append("AccessPoint(") 402 .append(ssid); 403 if (bssid != null) { 404 builder.append(":").append(bssid); 405 } 406 if (isSaved()) { 407 builder.append(',').append("saved"); 408 } 409 if (isActive()) { 410 builder.append(',').append("active"); 411 } 412 if (isEphemeral()) { 413 builder.append(',').append("ephemeral"); 414 } 415 if (isConnectable()) { 416 builder.append(',').append("connectable"); 417 } 418 if (security != SECURITY_NONE) { 419 builder.append(',').append(securityToString(security, pskType)); 420 } 421 builder.append(",level=").append(getLevel()); 422 if (mSpeed != Speed.NONE) { 423 builder.append(",speed=").append(mSpeed); 424 } 425 builder.append(",metered=").append(isMetered()); 426 427 return builder.append(')').toString(); 428 } 429 430 /** 431 * Updates the AccessPoint rankingScore, metering, and speed, returning true if the data has 432 * changed. 433 * 434 * @param scoreCache The score cache to use to retrieve scores 435 * @param scoringUiEnabled Whether to show scoring and badging UI 436 * @param maxScoreCacheAgeMillis the maximum age in milliseconds of scores to consider when 437 * generating speed labels 438 */ 439 boolean update( 440 WifiNetworkScoreCache scoreCache, 441 boolean scoringUiEnabled, 442 long maxScoreCacheAgeMillis) { 443 boolean scoreChanged = false; 444 if (scoringUiEnabled) { 445 scoreChanged = updateScores(scoreCache, maxScoreCacheAgeMillis); 446 } 447 return updateMetered(scoreCache) || scoreChanged; 448 } 449 450 /** 451 * Updates the AccessPoint rankingScore and speed, returning true if the data has changed. 452 * 453 * <p>Any cached {@link TimestampedScoredNetwork} objects older than the given max age in millis 454 * will be removed when this method is invoked. 455 * 456 * <p>Precondition: {@link #mRssi} is up to date before invoking this method. 457 * 458 * @param scoreCache The score cache to use to retrieve scores 459 * @param maxScoreCacheAgeMillis the maximum age in milliseconds of scores to consider when 460 * generating speed labels 461 * 462 * @return true if the set speed has changed 463 */ 464 private boolean updateScores(WifiNetworkScoreCache scoreCache, long maxScoreCacheAgeMillis) { 465 long nowMillis = SystemClock.elapsedRealtime(); 466 for (ScanResult result : mScanResultCache.values()) { 467 ScoredNetwork score = scoreCache.getScoredNetwork(result); 468 if (score == null) { 469 continue; 470 } 471 TimestampedScoredNetwork timedScore = mScoredNetworkCache.get(result.BSSID); 472 if (timedScore == null) { 473 mScoredNetworkCache.put( 474 result.BSSID, new TimestampedScoredNetwork(score, nowMillis)); 475 } else { 476 // Update data since the has been seen in the score cache 477 timedScore.update(score, nowMillis); 478 } 479 } 480 481 // Remove old cached networks 482 long evictionCutoff = nowMillis - maxScoreCacheAgeMillis; 483 Iterator<TimestampedScoredNetwork> iterator = mScoredNetworkCache.values().iterator(); 484 iterator.forEachRemaining(timestampedScoredNetwork -> { 485 if (timestampedScoredNetwork.getUpdatedTimestampMillis() < evictionCutoff) { 486 iterator.remove(); 487 } 488 }); 489 490 return updateSpeed(); 491 } 492 493 /** 494 * Updates the internal speed, returning true if the update resulted in a speed label change. 495 */ 496 private boolean updateSpeed() { 497 int oldSpeed = mSpeed; 498 mSpeed = generateAverageSpeedForSsid(); 499 500 boolean changed = oldSpeed != mSpeed; 501 if(WifiTracker.sVerboseLogging && changed) { 502 Log.i(TAG, String.format("%s: Set speed to %d", ssid, mSpeed)); 503 } 504 return changed; 505 } 506 507 /** Creates a speed value for the current {@link #mRssi} by averaging all non zero badges. */ 508 @Speed private int generateAverageSpeedForSsid() { 509 if (mScoredNetworkCache.isEmpty()) { 510 return Speed.NONE; 511 } 512 513 if (Log.isLoggable(TAG, Log.DEBUG)) { 514 Log.d(TAG, String.format("Generating fallbackspeed for %s using cache: %s", 515 getSsidStr(), mScoredNetworkCache)); 516 } 517 518 // TODO(b/63073866): If flickering issues persist, consider mapping using getLevel rather 519 // than specific rssi value so score doesn't change without a visible wifi bar change. This 520 // issue is likely to be more evident for the active AP whose RSSI value is not half-lifed. 521 522 int count = 0; 523 int totalSpeed = 0; 524 for (TimestampedScoredNetwork timedScore : mScoredNetworkCache.values()) { 525 int speed = timedScore.getScore().calculateBadge(mRssi); 526 if (speed != Speed.NONE) { 527 count++; 528 totalSpeed += speed; 529 } 530 } 531 int speed = count == 0 ? Speed.NONE : totalSpeed / count; 532 if (WifiTracker.sVerboseLogging) { 533 Log.i(TAG, String.format("%s generated fallback speed is: %d", getSsidStr(), speed)); 534 } 535 return roundToClosestSpeedEnum(speed); 536 } 537 538 /** 539 * Updates the AccessPoint's metering based on {@link ScoredNetwork#meteredHint}, returning 540 * true if the metering changed. 541 */ 542 private boolean updateMetered(WifiNetworkScoreCache scoreCache) { 543 boolean oldMetering = mIsScoredNetworkMetered; 544 mIsScoredNetworkMetered = false; 545 546 if (isActive() && mInfo != null) { 547 NetworkKey key = NetworkKey.createFromWifiInfo(mInfo); 548 ScoredNetwork score = scoreCache.getScoredNetwork(key); 549 if (score != null) { 550 mIsScoredNetworkMetered |= score.meteredHint; 551 } 552 } else { 553 for (ScanResult result : mScanResultCache.values()) { 554 ScoredNetwork score = scoreCache.getScoredNetwork(result); 555 if (score == null) { 556 continue; 557 } 558 mIsScoredNetworkMetered |= score.meteredHint; 559 } 560 } 561 return oldMetering == mIsScoredNetworkMetered; 562 } 563 564 private void evictOldScanResults() { 565 long nowMs = SystemClock.elapsedRealtime(); 566 for (Iterator<ScanResult> iter = mScanResultCache.values().iterator(); iter.hasNext(); ) { 567 ScanResult result = iter.next(); 568 // result timestamp is in microseconds 569 if (nowMs - result.timestamp / 1000 > MAX_SCAN_RESULT_AGE_MILLIS) { 570 iter.remove(); 571 } 572 } 573 } 574 575 public boolean matches(ScanResult result) { 576 return ssid.equals(result.SSID) && security == getSecurity(result); 577 } 578 579 public boolean matches(WifiConfiguration config) { 580 if (config.isPasspoint() && mConfig != null && mConfig.isPasspoint()) { 581 return ssid.equals(removeDoubleQuotes(config.SSID)) && config.FQDN.equals(mConfig.FQDN); 582 } else { 583 return ssid.equals(removeDoubleQuotes(config.SSID)) 584 && security == getSecurity(config) 585 && (mConfig == null || mConfig.shared == config.shared); 586 } 587 } 588 589 public WifiConfiguration getConfig() { 590 return mConfig; 591 } 592 593 public String getPasspointFqdn() { 594 return mFqdn; 595 } 596 597 public void clearConfig() { 598 mConfig = null; 599 networkId = WifiConfiguration.INVALID_NETWORK_ID; 600 } 601 602 public WifiInfo getInfo() { 603 return mInfo; 604 } 605 606 /** 607 * Returns the number of levels to show for a Wifi icon, from 0 to {@link #SIGNAL_LEVELS}-1. 608 * 609 * <p>Use {@#isReachable()} to determine if an AccessPoint is in range, as this method will 610 * always return at least 0. 611 */ 612 public int getLevel() { 613 return WifiManager.calculateSignalLevel(mRssi, SIGNAL_LEVELS); 614 } 615 616 public int getRssi() { 617 return mRssi; 618 } 619 620 /** 621 * Updates {@link #mRssi}. 622 * 623 * <p>If the given connection is active, the existing value of {@link #mRssi} will be returned. 624 * If the given AccessPoint is not active, a value will be calculated from previous scan 625 * results, returning the best RSSI for all matching AccessPoints averaged with the previous 626 * value. If the access point is not connected and there are no scan results, the rssi will be 627 * set to {@link #UNREACHABLE_RSSI}. 628 */ 629 private void updateRssi() { 630 if (this.isActive()) { 631 return; 632 } 633 634 int rssi = UNREACHABLE_RSSI; 635 for (ScanResult result : mScanResultCache.values()) { 636 if (result.level > rssi) { 637 rssi = result.level; 638 } 639 } 640 641 if (rssi != UNREACHABLE_RSSI && mRssi != UNREACHABLE_RSSI) { 642 mRssi = (mRssi + rssi) / 2; // half-life previous value 643 } else { 644 mRssi = rssi; 645 } 646 } 647 648 /** 649 * Returns if the network should be considered metered. 650 */ 651 public boolean isMetered() { 652 return mIsScoredNetworkMetered 653 || WifiConfiguration.isMetered(mConfig, mInfo); 654 } 655 656 public NetworkInfo getNetworkInfo() { 657 return mNetworkInfo; 658 } 659 660 public int getSecurity() { 661 return security; 662 } 663 664 public String getSecurityString(boolean concise) { 665 Context context = mContext; 666 if (isPasspoint() || isPasspointConfig()) { 667 return concise ? context.getString(R.string.wifi_security_short_eap) : 668 context.getString(R.string.wifi_security_eap); 669 } 670 switch(security) { 671 case SECURITY_EAP: 672 return concise ? context.getString(R.string.wifi_security_short_eap) : 673 context.getString(R.string.wifi_security_eap); 674 case SECURITY_PSK: 675 switch (pskType) { 676 case PSK_WPA: 677 return concise ? context.getString(R.string.wifi_security_short_wpa) : 678 context.getString(R.string.wifi_security_wpa); 679 case PSK_WPA2: 680 return concise ? context.getString(R.string.wifi_security_short_wpa2) : 681 context.getString(R.string.wifi_security_wpa2); 682 case PSK_WPA_WPA2: 683 return concise ? context.getString(R.string.wifi_security_short_wpa_wpa2) : 684 context.getString(R.string.wifi_security_wpa_wpa2); 685 case PSK_UNKNOWN: 686 default: 687 return concise ? context.getString(R.string.wifi_security_short_psk_generic) 688 : context.getString(R.string.wifi_security_psk_generic); 689 } 690 case SECURITY_WEP: 691 return concise ? context.getString(R.string.wifi_security_short_wep) : 692 context.getString(R.string.wifi_security_wep); 693 case SECURITY_NONE: 694 default: 695 return concise ? "" : context.getString(R.string.wifi_security_none); 696 } 697 } 698 699 public String getSsidStr() { 700 return ssid; 701 } 702 703 public String getBssid() { 704 return bssid; 705 } 706 707 public CharSequence getSsid() { 708 final SpannableString str = new SpannableString(ssid); 709 str.setSpan(new TtsSpan.TelephoneBuilder(ssid).build(), 0, ssid.length(), 710 Spannable.SPAN_INCLUSIVE_INCLUSIVE); 711 return str; 712 } 713 714 public String getConfigName() { 715 if (mConfig != null && mConfig.isPasspoint()) { 716 return mConfig.providerFriendlyName; 717 } else if (mFqdn != null) { 718 return mProviderFriendlyName; 719 } else { 720 return ssid; 721 } 722 } 723 724 public DetailedState getDetailedState() { 725 if (mNetworkInfo != null) { 726 return mNetworkInfo.getDetailedState(); 727 } 728 Log.w(TAG, "NetworkInfo is null, cannot return detailed state"); 729 return null; 730 } 731 732 public boolean isCarrierAp() { 733 return mIsCarrierAp; 734 } 735 736 public int getCarrierApEapType() { 737 return mCarrierApEapType; 738 } 739 740 public String getCarrierName() { 741 return mCarrierName; 742 } 743 744 public String getSavedNetworkSummary() { 745 WifiConfiguration config = mConfig; 746 if (config != null) { 747 PackageManager pm = mContext.getPackageManager(); 748 String systemName = pm.getNameForUid(android.os.Process.SYSTEM_UID); 749 int userId = UserHandle.getUserId(config.creatorUid); 750 ApplicationInfo appInfo = null; 751 if (config.creatorName != null && config.creatorName.equals(systemName)) { 752 appInfo = mContext.getApplicationInfo(); 753 } else { 754 try { 755 IPackageManager ipm = AppGlobals.getPackageManager(); 756 appInfo = ipm.getApplicationInfo(config.creatorName, 0 /* flags */, userId); 757 } catch (RemoteException rex) { 758 } 759 } 760 if (appInfo != null && 761 !appInfo.packageName.equals(mContext.getString(R.string.settings_package)) && 762 !appInfo.packageName.equals( 763 mContext.getString(R.string.certinstaller_package))) { 764 return mContext.getString(R.string.saved_network, appInfo.loadLabel(pm)); 765 } 766 } 767 return ""; 768 } 769 770 public String getSummary() { 771 return getSettingsSummary(mConfig); 772 } 773 774 public String getSettingsSummary() { 775 return getSettingsSummary(mConfig); 776 } 777 778 private String getSettingsSummary(WifiConfiguration config) { 779 // Update to new summary 780 StringBuilder summary = new StringBuilder(); 781 782 if (isActive() && config != null && config.isPasspoint()) { 783 // This is the active connection on passpoint 784 summary.append(getSummary(mContext, getDetailedState(), 785 false, config.providerFriendlyName)); 786 } else if (isActive() && config != null && getDetailedState() == DetailedState.CONNECTED 787 && mIsCarrierAp) { 788 summary.append(String.format(mContext.getString(R.string.connected_via_carrier), mCarrierName)); 789 } else if (isActive()) { 790 // This is the active connection on non-passpoint network 791 summary.append(getSummary(mContext, getDetailedState(), 792 mInfo != null && mInfo.isEphemeral())); 793 } else if (config != null && config.isPasspoint() 794 && config.getNetworkSelectionStatus().isNetworkEnabled()) { 795 String format = mContext.getString(R.string.available_via_passpoint); 796 summary.append(String.format(format, config.providerFriendlyName)); 797 } else if (config != null && config.hasNoInternetAccess()) { 798 int messageID = config.getNetworkSelectionStatus().isNetworkPermanentlyDisabled() 799 ? R.string.wifi_no_internet_no_reconnect 800 : R.string.wifi_no_internet; 801 summary.append(mContext.getString(messageID)); 802 } else if (config != null && !config.getNetworkSelectionStatus().isNetworkEnabled()) { 803 WifiConfiguration.NetworkSelectionStatus networkStatus = 804 config.getNetworkSelectionStatus(); 805 switch (networkStatus.getNetworkSelectionDisableReason()) { 806 case WifiConfiguration.NetworkSelectionStatus.DISABLED_AUTHENTICATION_FAILURE: 807 summary.append(mContext.getString(R.string.wifi_disabled_password_failure)); 808 break; 809 case WifiConfiguration.NetworkSelectionStatus.DISABLED_BY_WRONG_PASSWORD: 810 summary.append(mContext.getString(R.string.wifi_check_password_try_again)); 811 break; 812 case WifiConfiguration.NetworkSelectionStatus.DISABLED_DHCP_FAILURE: 813 case WifiConfiguration.NetworkSelectionStatus.DISABLED_DNS_FAILURE: 814 summary.append(mContext.getString(R.string.wifi_disabled_network_failure)); 815 break; 816 case WifiConfiguration.NetworkSelectionStatus.DISABLED_ASSOCIATION_REJECTION: 817 summary.append(mContext.getString(R.string.wifi_disabled_generic)); 818 break; 819 } 820 } else if (config != null && config.getNetworkSelectionStatus().isNotRecommended()) { 821 summary.append(mContext.getString(R.string.wifi_disabled_by_recommendation_provider)); 822 } else if (mIsCarrierAp) { 823 summary.append(String.format(mContext.getString(R.string.available_via_carrier), mCarrierName)); 824 } else if (!isReachable()) { // Wifi out of range 825 summary.append(mContext.getString(R.string.wifi_not_in_range)); 826 } else { // In range, not disabled. 827 if (config != null) { // Is saved network 828 // Last attempt to connect to this failed. Show reason why 829 switch (config.recentFailure.getAssociationStatus()) { 830 case WifiConfiguration.RecentFailure.STATUS_AP_UNABLE_TO_HANDLE_NEW_STA: 831 summary.append(mContext.getString( 832 R.string.wifi_ap_unable_to_handle_new_sta)); 833 break; 834 default: 835 // "Saved" 836 summary.append(mContext.getString(R.string.wifi_remembered)); 837 break; 838 } 839 } 840 } 841 842 if (WifiTracker.sVerboseLogging) { 843 // Add RSSI/band information for this config, what was seen up to 6 seconds ago 844 // verbose WiFi Logging is only turned on thru developers settings 845 if (isActive() && mInfo != null) { 846 summary.append(" f=" + Integer.toString(mInfo.getFrequency())); 847 } 848 summary.append(" " + getVisibilityStatus()); 849 if (config != null && !config.getNetworkSelectionStatus().isNetworkEnabled()) { 850 summary.append(" (" + config.getNetworkSelectionStatus().getNetworkStatusString()); 851 if (config.getNetworkSelectionStatus().getDisableTime() > 0) { 852 long now = System.currentTimeMillis(); 853 long diff = (now - config.getNetworkSelectionStatus().getDisableTime()) / 1000; 854 long sec = diff%60; //seconds 855 long min = (diff/60)%60; //minutes 856 long hour = (min/60)%60; //hours 857 summary.append(", "); 858 if (hour > 0) summary.append(Long.toString(hour) + "h "); 859 summary.append( Long.toString(min) + "m "); 860 summary.append( Long.toString(sec) + "s "); 861 } 862 summary.append(")"); 863 } 864 865 if (config != null) { 866 WifiConfiguration.NetworkSelectionStatus networkStatus = 867 config.getNetworkSelectionStatus(); 868 for (int index = WifiConfiguration.NetworkSelectionStatus.NETWORK_SELECTION_ENABLE; 869 index < WifiConfiguration.NetworkSelectionStatus 870 .NETWORK_SELECTION_DISABLED_MAX; index++) { 871 if (networkStatus.getDisableReasonCounter(index) != 0) { 872 summary.append(" " + WifiConfiguration.NetworkSelectionStatus 873 .getNetworkDisableReasonString(index) + "=" 874 + networkStatus.getDisableReasonCounter(index)); 875 } 876 } 877 } 878 } 879 880 // If Speed label and summary are both present, use the preference combination to combine 881 // the two, else return the non-null one. 882 if (getSpeedLabel() != null && summary.length() != 0) { 883 return mContext.getResources().getString( 884 R.string.preference_summary_default_combination, 885 getSpeedLabel(), 886 summary.toString()); 887 } else if (getSpeedLabel() != null) { 888 return getSpeedLabel(); 889 } else { 890 return summary.toString(); 891 } 892 } 893 894 /** 895 * Returns the visibility status of the WifiConfiguration. 896 * 897 * @return autojoin debugging information 898 * TODO: use a string formatter 899 * ["rssi 5Ghz", "num results on 5GHz" / "rssi 5Ghz", "num results on 5GHz"] 900 * For instance [-40,5/-30,2] 901 */ 902 private String getVisibilityStatus() { 903 StringBuilder visibility = new StringBuilder(); 904 StringBuilder scans24GHz = new StringBuilder(); 905 StringBuilder scans5GHz = new StringBuilder(); 906 String bssid = null; 907 908 long now = System.currentTimeMillis(); 909 910 if (isActive() && mInfo != null) { 911 bssid = mInfo.getBSSID(); 912 if (bssid != null) { 913 visibility.append(" ").append(bssid); 914 } 915 visibility.append(" rssi=").append(mInfo.getRssi()); 916 visibility.append(" "); 917 visibility.append(" score=").append(mInfo.score); 918 if (mSpeed != Speed.NONE) { 919 visibility.append(" speed=").append(getSpeedLabel()); 920 } 921 visibility.append(String.format(" tx=%.1f,", mInfo.txSuccessRate)); 922 visibility.append(String.format("%.1f,", mInfo.txRetriesRate)); 923 visibility.append(String.format("%.1f ", mInfo.txBadRate)); 924 visibility.append(String.format("rx=%.1f", mInfo.rxSuccessRate)); 925 } 926 927 int maxRssi5 = WifiConfiguration.INVALID_RSSI; 928 int maxRssi24 = WifiConfiguration.INVALID_RSSI; 929 final int maxDisplayedScans = 4; 930 int num5 = 0; // number of scanned BSSID on 5GHz band 931 int num24 = 0; // number of scanned BSSID on 2.4Ghz band 932 int numBlackListed = 0; 933 evictOldScanResults(); 934 935 // TODO: sort list by RSSI or age 936 for (ScanResult result : mScanResultCache.values()) { 937 if (result.frequency >= LOWER_FREQ_5GHZ 938 && result.frequency <= HIGHER_FREQ_5GHZ) { 939 // Strictly speaking: [4915, 5825] 940 num5++; 941 942 if (result.level > maxRssi5) { 943 maxRssi5 = result.level; 944 } 945 if (num5 <= maxDisplayedScans) { 946 scans5GHz.append(verboseScanResultSummary(result, bssid)); 947 } 948 } else if (result.frequency >= LOWER_FREQ_24GHZ 949 && result.frequency <= HIGHER_FREQ_24GHZ) { 950 // Strictly speaking: [2412, 2482] 951 num24++; 952 953 if (result.level > maxRssi24) { 954 maxRssi24 = result.level; 955 } 956 if (num24 <= maxDisplayedScans) { 957 scans24GHz.append(verboseScanResultSummary(result, bssid)); 958 } 959 } 960 } 961 visibility.append(" ["); 962 if (num24 > 0) { 963 visibility.append("(").append(num24).append(")"); 964 if (num24 > maxDisplayedScans) { 965 visibility.append("max=").append(maxRssi24).append(","); 966 } 967 visibility.append(scans24GHz.toString()); 968 } 969 visibility.append(";"); 970 if (num5 > 0) { 971 visibility.append("(").append(num5).append(")"); 972 if (num5 > maxDisplayedScans) { 973 visibility.append("max=").append(maxRssi5).append(","); 974 } 975 visibility.append(scans5GHz.toString()); 976 } 977 if (numBlackListed > 0) 978 visibility.append("!").append(numBlackListed); 979 visibility.append("]"); 980 981 return visibility.toString(); 982 } 983 984 @VisibleForTesting 985 /* package */ String verboseScanResultSummary(ScanResult result, String bssid) { 986 StringBuilder stringBuilder = new StringBuilder(); 987 stringBuilder.append(" \n{").append(result.BSSID); 988 if (result.BSSID.equals(bssid)) { 989 stringBuilder.append("*"); 990 } 991 stringBuilder.append("=").append(result.frequency); 992 stringBuilder.append(",").append(result.level); 993 int speed = getSpecificApSpeed(result); 994 if (speed != Speed.NONE) { 995 stringBuilder.append(",") 996 .append(getSpeedLabel(speed)); 997 } 998 stringBuilder.append("}"); 999 return stringBuilder.toString(); 1000 } 1001 1002 @Speed private int getSpecificApSpeed(ScanResult result) { 1003 TimestampedScoredNetwork timedScore = mScoredNetworkCache.get(result.BSSID); 1004 if (timedScore == null) { 1005 return Speed.NONE; 1006 } 1007 // For debugging purposes we may want to use mRssi rather than result.level as the average 1008 // speed wil be determined by mRssi 1009 return timedScore.getScore().calculateBadge(result.level); 1010 } 1011 1012 /** 1013 * Return whether this is the active connection. 1014 * For ephemeral connections (networkId is invalid), this returns false if the network is 1015 * disconnected. 1016 */ 1017 public boolean isActive() { 1018 return mNetworkInfo != null && 1019 (networkId != WifiConfiguration.INVALID_NETWORK_ID || 1020 mNetworkInfo.getState() != State.DISCONNECTED); 1021 } 1022 1023 public boolean isConnectable() { 1024 return getLevel() != -1 && getDetailedState() == null; 1025 } 1026 1027 public boolean isEphemeral() { 1028 return mInfo != null && mInfo.isEphemeral() && 1029 mNetworkInfo != null && mNetworkInfo.getState() != State.DISCONNECTED; 1030 } 1031 1032 /** 1033 * Return true if this AccessPoint represents a Passpoint AP. 1034 */ 1035 public boolean isPasspoint() { 1036 return mConfig != null && mConfig.isPasspoint(); 1037 } 1038 1039 /** 1040 * Return true if this AccessPoint represents a Passpoint provider configuration. 1041 */ 1042 public boolean isPasspointConfig() { 1043 return mFqdn != null; 1044 } 1045 1046 /** 1047 * Return whether the given {@link WifiInfo} is for this access point. 1048 * If the current AP does not have a network Id then the config is used to 1049 * match based on SSID and security. 1050 */ 1051 private boolean isInfoForThisAccessPoint(WifiConfiguration config, WifiInfo info) { 1052 if (isPasspoint() == false && networkId != WifiConfiguration.INVALID_NETWORK_ID) { 1053 return networkId == info.getNetworkId(); 1054 } else if (config != null) { 1055 return matches(config); 1056 } 1057 else { 1058 // Might be an ephemeral connection with no WifiConfiguration. Try matching on SSID. 1059 // (Note that we only do this if the WifiConfiguration explicitly equals INVALID). 1060 // TODO: Handle hex string SSIDs. 1061 return ssid.equals(removeDoubleQuotes(info.getSSID())); 1062 } 1063 } 1064 1065 public boolean isSaved() { 1066 return networkId != WifiConfiguration.INVALID_NETWORK_ID; 1067 } 1068 1069 public Object getTag() { 1070 return mTag; 1071 } 1072 1073 public void setTag(Object tag) { 1074 mTag = tag; 1075 } 1076 1077 /** 1078 * Generate and save a default wifiConfiguration with common values. 1079 * Can only be called for unsecured networks. 1080 */ 1081 public void generateOpenNetworkConfig() { 1082 if (security != SECURITY_NONE) 1083 throw new IllegalStateException(); 1084 if (mConfig != null) 1085 return; 1086 mConfig = new WifiConfiguration(); 1087 mConfig.SSID = AccessPoint.convertToQuotedString(ssid); 1088 mConfig.allowedKeyManagement.set(KeyMgmt.NONE); 1089 } 1090 1091 void loadConfig(WifiConfiguration config) { 1092 ssid = (config.SSID == null ? "" : removeDoubleQuotes(config.SSID)); 1093 bssid = config.BSSID; 1094 security = getSecurity(config); 1095 networkId = config.networkId; 1096 mConfig = config; 1097 } 1098 1099 private void initWithScanResult(ScanResult result) { 1100 ssid = result.SSID; 1101 bssid = result.BSSID; 1102 security = getSecurity(result); 1103 if (security == SECURITY_PSK) 1104 pskType = getPskType(result); 1105 1106 mScanResultCache.put(result.BSSID, result); 1107 updateRssi(); 1108 mIsCarrierAp = result.isCarrierAp; 1109 mCarrierApEapType = result.carrierApEapType; 1110 mCarrierName = result.carrierName; 1111 } 1112 1113 public void saveWifiState(Bundle savedState) { 1114 if (ssid != null) savedState.putString(KEY_SSID, getSsidStr()); 1115 savedState.putInt(KEY_SECURITY, security); 1116 savedState.putInt(KEY_SPEED, mSpeed); 1117 savedState.putInt(KEY_PSKTYPE, pskType); 1118 if (mConfig != null) savedState.putParcelable(KEY_CONFIG, mConfig); 1119 savedState.putParcelable(KEY_WIFIINFO, mInfo); 1120 evictOldScanResults(); 1121 savedState.putParcelableArrayList(KEY_SCANRESULTCACHE, 1122 new ArrayList<ScanResult>(mScanResultCache.values())); 1123 savedState.putParcelableArrayList(KEY_SCOREDNETWORKCACHE, 1124 new ArrayList<>(mScoredNetworkCache.values())); 1125 if (mNetworkInfo != null) { 1126 savedState.putParcelable(KEY_NETWORKINFO, mNetworkInfo); 1127 } 1128 if (mFqdn != null) { 1129 savedState.putString(KEY_FQDN, mFqdn); 1130 } 1131 if (mProviderFriendlyName != null) { 1132 savedState.putString(KEY_PROVIDER_FRIENDLY_NAME, mProviderFriendlyName); 1133 } 1134 savedState.putBoolean(KEY_IS_CARRIER_AP, mIsCarrierAp); 1135 savedState.putInt(KEY_CARRIER_AP_EAP_TYPE, mCarrierApEapType); 1136 savedState.putString(KEY_CARRIER_NAME, mCarrierName); 1137 } 1138 1139 public void setListener(AccessPointListener listener) { 1140 mAccessPointListener = listener; 1141 } 1142 1143 /** 1144 * Update the AP with the given scan result. 1145 * 1146 * @param result the ScanResult to add to the AccessPoint scan cache 1147 * @param evictOldScanResults whether stale scan results should be removed 1148 * from the cache during this update process 1149 * @return true if the scan result update caused a change in state which would impact ranking 1150 * or AccessPoint rendering (e.g. wifi level, security) 1151 */ 1152 boolean update(ScanResult result, boolean evictOldScanResults) { 1153 if (matches(result)) { 1154 int oldLevel = getLevel(); 1155 1156 /* Add or update the scan result for the BSSID */ 1157 mScanResultCache.put(result.BSSID, result); 1158 if (evictOldScanResults) evictOldScanResults(); 1159 updateRssi(); 1160 int newLevel = getLevel(); 1161 1162 if (newLevel > 0 && newLevel != oldLevel) { 1163 // Only update labels on visible rssi changes 1164 updateSpeed(); 1165 if (mAccessPointListener != null) { 1166 mAccessPointListener.onLevelChanged(this); 1167 } 1168 } 1169 // This flag only comes from scans, is not easily saved in config 1170 if (security == SECURITY_PSK) { 1171 pskType = getPskType(result); 1172 } 1173 1174 if (mAccessPointListener != null) { 1175 mAccessPointListener.onAccessPointChanged(this); 1176 } 1177 1178 // The carrier info in the ScanResult is set by the platform based on the SSID and will 1179 // always be the same for all matching scan results. 1180 mIsCarrierAp = result.isCarrierAp; 1181 mCarrierApEapType = result.carrierApEapType; 1182 mCarrierName = result.carrierName; 1183 1184 return true; 1185 } 1186 return false; 1187 } 1188 1189 /** Attempt to update the AccessPoint and return true if an update occurred. */ 1190 public boolean update( 1191 @Nullable WifiConfiguration config, WifiInfo info, NetworkInfo networkInfo) { 1192 boolean updated = false; 1193 final int oldLevel = getLevel(); 1194 if (info != null && isInfoForThisAccessPoint(config, info)) { 1195 updated = (mInfo == null); 1196 if (mConfig != config) { 1197 // We do not set updated = true as we do not want to increase the amount of sorting 1198 // and copying performed in WifiTracker at this time. If issues involving refresh 1199 // are still seen, we will investigate further. 1200 update(config); // Notifies the AccessPointListener of the change 1201 } 1202 if (mRssi != info.getRssi() && info.getRssi() != WifiInfo.INVALID_RSSI) { 1203 mRssi = info.getRssi(); 1204 updated = true; 1205 } else if (mNetworkInfo != null && networkInfo != null 1206 && mNetworkInfo.getDetailedState() != networkInfo.getDetailedState()) { 1207 updated = true; 1208 } 1209 mInfo = info; 1210 mNetworkInfo = networkInfo; 1211 } else if (mInfo != null) { 1212 updated = true; 1213 mInfo = null; 1214 mNetworkInfo = null; 1215 } 1216 if (updated && mAccessPointListener != null) { 1217 mAccessPointListener.onAccessPointChanged(this); 1218 1219 if (oldLevel != getLevel() /* current level */) { 1220 mAccessPointListener.onLevelChanged(this); 1221 } 1222 } 1223 return updated; 1224 } 1225 1226 void update(@Nullable WifiConfiguration config) { 1227 mConfig = config; 1228 networkId = config != null ? config.networkId : WifiConfiguration.INVALID_NETWORK_ID; 1229 if (mAccessPointListener != null) { 1230 mAccessPointListener.onAccessPointChanged(this); 1231 } 1232 } 1233 1234 @VisibleForTesting 1235 void setRssi(int rssi) { 1236 mRssi = rssi; 1237 } 1238 1239 /** Sets the rssi to {@link #UNREACHABLE_RSSI}. */ 1240 void setUnreachable() { 1241 setRssi(AccessPoint.UNREACHABLE_RSSI); 1242 } 1243 1244 int getSpeed() { return mSpeed;} 1245 1246 @Nullable 1247 String getSpeedLabel() { 1248 return getSpeedLabel(mSpeed); 1249 } 1250 1251 @Nullable 1252 @Speed 1253 private int roundToClosestSpeedEnum(int speed) { 1254 if (speed < Speed.SLOW) { 1255 return Speed.NONE; 1256 } else if (speed < (Speed.SLOW + Speed.MODERATE) / 2) { 1257 return Speed.SLOW; 1258 } else if (speed < (Speed.MODERATE + Speed.FAST) / 2) { 1259 return Speed.MODERATE; 1260 } else if (speed < (Speed.FAST + Speed.VERY_FAST) / 2) { 1261 return Speed.FAST; 1262 } else { 1263 return Speed.VERY_FAST; 1264 } 1265 } 1266 1267 @Nullable 1268 private String getSpeedLabel(@Speed int speed) { 1269 switch (speed) { 1270 case Speed.VERY_FAST: 1271 return mContext.getString(R.string.speed_label_very_fast); 1272 case Speed.FAST: 1273 return mContext.getString(R.string.speed_label_fast); 1274 case Speed.MODERATE: 1275 return mContext.getString(R.string.speed_label_okay); 1276 case Speed.SLOW: 1277 return mContext.getString(R.string.speed_label_slow); 1278 case Speed.NONE: 1279 default: 1280 return null; 1281 } 1282 } 1283 1284 /** Return true if the current RSSI is reachable, and false otherwise. */ 1285 public boolean isReachable() { 1286 return mRssi != UNREACHABLE_RSSI; 1287 } 1288 1289 public static String getSummary(Context context, String ssid, DetailedState state, 1290 boolean isEphemeral, String passpointProvider) { 1291 if (state == DetailedState.CONNECTED && ssid == null) { 1292 if (TextUtils.isEmpty(passpointProvider) == false) { 1293 // Special case for connected + passpoint networks. 1294 String format = context.getString(R.string.connected_via_passpoint); 1295 return String.format(format, passpointProvider); 1296 } else if (isEphemeral) { 1297 // Special case for connected + ephemeral networks. 1298 final NetworkScoreManager networkScoreManager = context.getSystemService( 1299 NetworkScoreManager.class); 1300 NetworkScorerAppData scorer = networkScoreManager.getActiveScorer(); 1301 if (scorer != null && scorer.getRecommendationServiceLabel() != null) { 1302 String format = context.getString(R.string.connected_via_network_scorer); 1303 return String.format(format, scorer.getRecommendationServiceLabel()); 1304 } else { 1305 return context.getString(R.string.connected_via_network_scorer_default); 1306 } 1307 } 1308 } 1309 1310 // Case when there is wifi connected without internet connectivity. 1311 final ConnectivityManager cm = (ConnectivityManager) 1312 context.getSystemService(Context.CONNECTIVITY_SERVICE); 1313 if (state == DetailedState.CONNECTED) { 1314 IWifiManager wifiManager = IWifiManager.Stub.asInterface( 1315 ServiceManager.getService(Context.WIFI_SERVICE)); 1316 NetworkCapabilities nc = null; 1317 1318 try { 1319 nc = cm.getNetworkCapabilities(wifiManager.getCurrentNetwork()); 1320 } catch (RemoteException e) {} 1321 1322 if (nc != null) { 1323 if (nc.hasCapability(nc.NET_CAPABILITY_CAPTIVE_PORTAL)) { 1324 int id = context.getResources() 1325 .getIdentifier("network_available_sign_in", "string", "android"); 1326 return context.getString(id); 1327 } else if (!nc.hasCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED)) { 1328 return context.getString(R.string.wifi_connected_no_internet); 1329 } 1330 } 1331 } 1332 if (state == null) { 1333 Log.w(TAG, "state is null, returning empty summary"); 1334 return ""; 1335 } 1336 String[] formats = context.getResources().getStringArray((ssid == null) 1337 ? R.array.wifi_status : R.array.wifi_status_with_ssid); 1338 int index = state.ordinal(); 1339 1340 if (index >= formats.length || formats[index].length() == 0) { 1341 return ""; 1342 } 1343 return String.format(formats[index], ssid); 1344 } 1345 1346 public static String getSummary(Context context, DetailedState state, boolean isEphemeral) { 1347 return getSummary(context, null, state, isEphemeral, null); 1348 } 1349 1350 public static String getSummary(Context context, DetailedState state, boolean isEphemeral, 1351 String passpointProvider) { 1352 return getSummary(context, null, state, isEphemeral, passpointProvider); 1353 } 1354 1355 public static String convertToQuotedString(String string) { 1356 return "\"" + string + "\""; 1357 } 1358 1359 private static int getPskType(ScanResult result) { 1360 boolean wpa = result.capabilities.contains("WPA-PSK"); 1361 boolean wpa2 = result.capabilities.contains("WPA2-PSK"); 1362 if (wpa2 && wpa) { 1363 return PSK_WPA_WPA2; 1364 } else if (wpa2) { 1365 return PSK_WPA2; 1366 } else if (wpa) { 1367 return PSK_WPA; 1368 } else { 1369 Log.w(TAG, "Received abnormal flag string: " + result.capabilities); 1370 return PSK_UNKNOWN; 1371 } 1372 } 1373 1374 private static int getSecurity(ScanResult result) { 1375 if (result.capabilities.contains("WEP")) { 1376 return SECURITY_WEP; 1377 } else if (result.capabilities.contains("PSK")) { 1378 return SECURITY_PSK; 1379 } else if (result.capabilities.contains("EAP")) { 1380 return SECURITY_EAP; 1381 } 1382 return SECURITY_NONE; 1383 } 1384 1385 static int getSecurity(WifiConfiguration config) { 1386 if (config.allowedKeyManagement.get(KeyMgmt.WPA_PSK)) { 1387 return SECURITY_PSK; 1388 } 1389 if (config.allowedKeyManagement.get(KeyMgmt.WPA_EAP) || 1390 config.allowedKeyManagement.get(KeyMgmt.IEEE8021X)) { 1391 return SECURITY_EAP; 1392 } 1393 return (config.wepKeys[0] != null) ? SECURITY_WEP : SECURITY_NONE; 1394 } 1395 1396 public static String securityToString(int security, int pskType) { 1397 if (security == SECURITY_WEP) { 1398 return "WEP"; 1399 } else if (security == SECURITY_PSK) { 1400 if (pskType == PSK_WPA) { 1401 return "WPA"; 1402 } else if (pskType == PSK_WPA2) { 1403 return "WPA2"; 1404 } else if (pskType == PSK_WPA_WPA2) { 1405 return "WPA_WPA2"; 1406 } 1407 return "PSK"; 1408 } else if (security == SECURITY_EAP) { 1409 return "EAP"; 1410 } 1411 return "NONE"; 1412 } 1413 1414 static String removeDoubleQuotes(String string) { 1415 if (TextUtils.isEmpty(string)) { 1416 return ""; 1417 } 1418 int length = string.length(); 1419 if ((length > 1) && (string.charAt(0) == '"') 1420 && (string.charAt(length - 1) == '"')) { 1421 return string.substring(1, length - 1); 1422 } 1423 return string; 1424 } 1425 1426 public interface AccessPointListener { 1427 void onAccessPointChanged(AccessPoint accessPoint); 1428 void onLevelChanged(AccessPoint accessPoint); 1429 } 1430} 1431