AccessPoint.java revision d1411d9ef23f2c08e99f401c0f3e25a509725c95
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.Objects; 68import java.util.concurrent.ConcurrentHashMap; 69import java.util.concurrent.atomic.AtomicInteger; 70 71 72public class AccessPoint implements Comparable<AccessPoint> { 73 static final String TAG = "SettingsLib.AccessPoint"; 74 75 /** 76 * Lower bound on the 2.4 GHz (802.11b/g/n) WLAN channels 77 */ 78 public static final int LOWER_FREQ_24GHZ = 2400; 79 80 /** 81 * Upper bound on the 2.4 GHz (802.11b/g/n) WLAN channels 82 */ 83 public static final int HIGHER_FREQ_24GHZ = 2500; 84 85 /** 86 * Lower bound on the 5.0 GHz (802.11a/h/j/n/ac) WLAN channels 87 */ 88 public static final int LOWER_FREQ_5GHZ = 4900; 89 90 /** 91 * Upper bound on the 5.0 GHz (802.11a/h/j/n/ac) WLAN channels 92 */ 93 public static final int HIGHER_FREQ_5GHZ = 5900; 94 95 @IntDef({Speed.NONE, Speed.SLOW, Speed.MODERATE, Speed.FAST, Speed.VERY_FAST}) 96 @Retention(RetentionPolicy.SOURCE) 97 public @interface Speed { 98 /** 99 * Constant value representing an unlabeled / unscored network. 100 */ 101 int NONE = 0; 102 /** 103 * Constant value representing a slow speed network connection. 104 */ 105 int SLOW = 5; 106 /** 107 * Constant value representing a medium speed network connection. 108 */ 109 int MODERATE = 10; 110 /** 111 * Constant value representing a fast speed network connection. 112 */ 113 int FAST = 20; 114 /** 115 * Constant value representing a very fast speed network connection. 116 */ 117 int VERY_FAST = 30; 118 } 119 120 /** 121 * Experimental: we should be able to show the user the list of BSSIDs and bands 122 * for that SSID. 123 * For now this data is used only with Verbose Logging so as to show the band and number 124 * of BSSIDs on which that network is seen. 125 */ 126 private final ConcurrentHashMap<String, ScanResult> mScanResultCache = 127 new ConcurrentHashMap<String, ScanResult>(32); 128 129 /** 130 * Map of BSSIDs to scored networks for individual bssids. 131 * 132 * <p>This cache should not be evicted with scan results, as the values here are used to 133 * generate a fallback in the absence of scores for the visible APs. 134 */ 135 private final Map<String, TimestampedScoredNetwork> mScoredNetworkCache = new HashMap<>(); 136 137 /** Maximum age in millis of cached scored networks in {@link #mScoredNetworkCache}. */ 138 @VisibleForTesting static final long MAX_CACHED_SCORE_AGE_MILLIS = 139 24 * DateUtils.DAY_IN_MILLIS; 140 141 /** Maximum age of scan results to hold onto while actively scanning. **/ 142 private static final long MAX_SCAN_RESULT_AGE_MILLIS = 15000; 143 144 static final String KEY_NETWORKINFO = "key_networkinfo"; 145 static final String KEY_WIFIINFO = "key_wifiinfo"; 146 static final String KEY_SCANRESULT = "key_scanresult"; 147 static final String KEY_SSID = "key_ssid"; 148 static final String KEY_SECURITY = "key_security"; 149 static final String KEY_SPEED = "key_speed"; 150 static final String KEY_PSKTYPE = "key_psktype"; 151 static final String KEY_SCANRESULTCACHE = "key_scanresultcache"; 152 static final String KEY_SCOREDNETWORKCACHE = "key_scorednetworkcache"; 153 static final String KEY_CONFIG = "key_config"; 154 static final String KEY_FQDN = "key_fqdn"; 155 static final String KEY_PROVIDER_FRIENDLY_NAME = "key_provider_friendly_name"; 156 static final String KEY_IS_CARRIER_AP = "key_is_carrier_ap"; 157 static final String KEY_CARRIER_AP_EAP_TYPE = "key_carrier_ap_eap_type"; 158 static final String KEY_CARRIER_NAME = "key_carrier_name"; 159 static final AtomicInteger sLastId = new AtomicInteger(0); 160 161 /** 162 * These values are matched in string arrays -- changes must be kept in sync 163 */ 164 public static final int SECURITY_NONE = 0; 165 public static final int SECURITY_WEP = 1; 166 public static final int SECURITY_PSK = 2; 167 public static final int SECURITY_EAP = 3; 168 169 private static final int PSK_UNKNOWN = 0; 170 private static final int PSK_WPA = 1; 171 private static final int PSK_WPA2 = 2; 172 private static final int PSK_WPA_WPA2 = 3; 173 174 /** 175 * The number of distinct wifi levels. 176 * 177 * <p>Must keep in sync with {@link R.array.wifi_signal} and {@link WifiManager#RSSI_LEVELS}. 178 */ 179 public static final int SIGNAL_LEVELS = 5; 180 181 public static final int UNREACHABLE_RSSI = Integer.MIN_VALUE; 182 183 private final Context mContext; 184 185 private String ssid; 186 private String bssid; 187 private int security; 188 private int networkId = WifiConfiguration.INVALID_NETWORK_ID; 189 190 private int pskType = PSK_UNKNOWN; 191 192 private WifiConfiguration mConfig; 193 194 private int mRssi = UNREACHABLE_RSSI; 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 mId = sLastId.incrementAndGet(); 279 } 280 281 public AccessPoint(Context context, WifiConfiguration config) { 282 mContext = context; 283 loadConfig(config); 284 mId = sLastId.incrementAndGet(); 285 } 286 287 /** 288 * Initialize an AccessPoint object for a {@link PasspointConfiguration}. This is mainly 289 * used by "Saved Networks" page for managing the saved {@link PasspointConfiguration}. 290 */ 291 public AccessPoint(Context context, PasspointConfiguration config) { 292 mContext = context; 293 mFqdn = config.getHomeSp().getFqdn(); 294 mProviderFriendlyName = config.getHomeSp().getFriendlyName(); 295 mId = sLastId.incrementAndGet(); 296 } 297 298 AccessPoint(Context context, AccessPoint other) { 299 mContext = context; 300 copyFrom(other); 301 } 302 303 AccessPoint(Context context, ScanResult result) { 304 mContext = context; 305 initWithScanResult(result); 306 mId = sLastId.incrementAndGet(); 307 } 308 309 /** 310 * Copy accesspoint information. NOTE: We do not copy tag information because that is never 311 * set on the internal copy. 312 * @param that 313 */ 314 void copyFrom(AccessPoint that) { 315 that.evictOldScanResults(); 316 this.ssid = that.ssid; 317 this.bssid = that.bssid; 318 this.security = that.security; 319 this.networkId = that.networkId; 320 this.pskType = that.pskType; 321 this.mConfig = that.mConfig; //TODO: Watch out, this object is mutated. 322 this.mRssi = that.mRssi; 323 this.mInfo = that.mInfo; 324 this.mNetworkInfo = that.mNetworkInfo; 325 this.mScanResultCache.clear(); 326 this.mScanResultCache.putAll(that.mScanResultCache); 327 this.mScoredNetworkCache.clear(); 328 this.mScoredNetworkCache.putAll(that.mScoredNetworkCache); 329 this.mId = that.mId; 330 this.mSpeed = that.mSpeed; 331 this.mIsScoredNetworkMetered = that.mIsScoredNetworkMetered; 332 this.mIsCarrierAp = that.mIsCarrierAp; 333 this.mCarrierApEapType = that.mCarrierApEapType; 334 this.mCarrierName = that.mCarrierName; 335 } 336 337 /** 338 * Returns a negative integer, zero, or a positive integer if this AccessPoint is less than, 339 * equal to, or greater than the other AccessPoint. 340 * 341 * Sort order rules for AccessPoints: 342 * 1. Active before inactive 343 * 2. Reachable before unreachable 344 * 3. Saved before unsaved 345 * 4. Network speed value 346 * 5. Stronger signal before weaker signal 347 * 6. SSID alphabetically 348 * 349 * Note that AccessPoints with a signal are usually also Reachable, 350 * and will thus appear before unreachable saved AccessPoints. 351 */ 352 @Override 353 public int compareTo(@NonNull AccessPoint other) { 354 // Active one goes first. 355 if (isActive() && !other.isActive()) return -1; 356 if (!isActive() && other.isActive()) return 1; 357 358 // Reachable one goes before unreachable one. 359 if (isReachable() && !other.isReachable()) return -1; 360 if (!isReachable() && other.isReachable()) return 1; 361 362 // Configured (saved) one goes before unconfigured one. 363 if (isSaved() && !other.isSaved()) return -1; 364 if (!isSaved() && other.isSaved()) return 1; 365 366 // Faster speeds go before slower speeds - but only if visible change in speed label 367 if (getSpeed() != other.getSpeed()) { 368 return other.getSpeed() - getSpeed(); 369 } 370 371 // Sort by signal strength, bucketed by level 372 int difference = WifiManager.calculateSignalLevel(other.mRssi, SIGNAL_LEVELS) 373 - WifiManager.calculateSignalLevel(mRssi, SIGNAL_LEVELS); 374 if (difference != 0) { 375 return difference; 376 } 377 378 // Sort by ssid. 379 difference = getSsidStr().compareToIgnoreCase(other.getSsidStr()); 380 if (difference != 0) { 381 return difference; 382 } 383 384 // Do a case sensitive comparison to distinguish SSIDs that differ in case only 385 return getSsidStr().compareTo(other.getSsidStr()); 386 } 387 388 @Override 389 public boolean equals(Object other) { 390 if (!(other instanceof AccessPoint)) return false; 391 return (this.compareTo((AccessPoint) other) == 0); 392 } 393 394 @Override 395 public int hashCode() { 396 int result = 0; 397 if (mInfo != null) result += 13 * mInfo.hashCode(); 398 result += 19 * mRssi; 399 result += 23 * networkId; 400 result += 29 * ssid.hashCode(); 401 return result; 402 } 403 404 @Override 405 public String toString() { 406 StringBuilder builder = new StringBuilder().append("AccessPoint(") 407 .append(ssid); 408 if (bssid != null) { 409 builder.append(":").append(bssid); 410 } 411 if (isSaved()) { 412 builder.append(',').append("saved"); 413 } 414 if (isActive()) { 415 builder.append(',').append("active"); 416 } 417 if (isEphemeral()) { 418 builder.append(',').append("ephemeral"); 419 } 420 if (isConnectable()) { 421 builder.append(',').append("connectable"); 422 } 423 if (security != SECURITY_NONE) { 424 builder.append(',').append(securityToString(security, pskType)); 425 } 426 builder.append(",level=").append(getLevel()); 427 if (mSpeed != Speed.NONE) { 428 builder.append(",speed=").append(mSpeed); 429 } 430 builder.append(",metered=").append(isMetered()); 431 432 return builder.append(')').toString(); 433 } 434 435 /** 436 * Updates the AccessPoint rankingScore, metering, and speed, returning true if the data has 437 * changed. 438 * 439 * @param scoreCache The score cache to use to retrieve scores. 440 * @param scoringUiEnabled Whether to show scoring and badging UI. 441 */ 442 boolean update(WifiNetworkScoreCache scoreCache, boolean scoringUiEnabled) { 443 boolean scoreChanged = false; 444 if (scoringUiEnabled) { 445 scoreChanged = updateScores(scoreCache); 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 454 * {@link #MAX_CACHED_SCORE_AGE_MILLIS} 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 * @return true if the set speed has changed 460 */ 461 private boolean updateScores(WifiNetworkScoreCache scoreCache) { 462 long nowMillis = SystemClock.elapsedRealtime(); 463 for (ScanResult result : mScanResultCache.values()) { 464 ScoredNetwork score = scoreCache.getScoredNetwork(result); 465 if (score == null) { 466 continue; 467 } 468 TimestampedScoredNetwork timedScore = mScoredNetworkCache.get(result.BSSID); 469 if (timedScore == null) { 470 mScoredNetworkCache.put( 471 result.BSSID, new TimestampedScoredNetwork(score, nowMillis)); 472 } else { 473 // Update data since the has been seen in the score cache 474 timedScore.update(score, nowMillis); 475 } 476 } 477 478 // Remove old cached networks 479 long evictionCutoff = nowMillis - MAX_CACHED_SCORE_AGE_MILLIS; 480 Iterator<TimestampedScoredNetwork> iterator = mScoredNetworkCache.values().iterator(); 481 iterator.forEachRemaining(timestampedScoredNetwork -> { 482 if (timestampedScoredNetwork.getUpdatedTimestampMillis() < evictionCutoff) { 483 iterator.remove(); 484 } 485 }); 486 487 return updateSpeed(); 488 } 489 490 /** 491 * Updates the internal speed, returning true if the update resulted in a speed label change. 492 */ 493 private boolean updateSpeed() { 494 int oldSpeed = mSpeed; 495 mSpeed = generateAverageSpeedForSsid(); 496 497 boolean changed = oldSpeed != mSpeed; 498 if(WifiTracker.sVerboseLogging && changed) { 499 Log.i(TAG, String.format("%s: Set speed to %d", ssid, mSpeed)); 500 } 501 return changed; 502 } 503 504 /** Creates a speed value for the current {@link #mRssi} by averaging all non zero badges. */ 505 @Speed private int generateAverageSpeedForSsid() { 506 if (mScoredNetworkCache.isEmpty()) { 507 return Speed.NONE; 508 } 509 510 if (Log.isLoggable(TAG, Log.DEBUG)) { 511 Log.d(TAG, String.format("Generating fallbackspeed for %s using cache: %s", 512 getSsidStr(), mScoredNetworkCache)); 513 } 514 515 // TODO(b/63073866): If flickering issues persist, consider mapping using getLevel rather 516 // than specific rssi value so score doesn't change without a visible wifi bar change. This 517 // issue is likely to be more evident for the active AP whose RSSI value is not half-lifed. 518 519 int count = 0; 520 int totalSpeed = 0; 521 for (TimestampedScoredNetwork timedScore : mScoredNetworkCache.values()) { 522 int speed = timedScore.getScore().calculateBadge(mRssi); 523 if (speed != Speed.NONE) { 524 count++; 525 totalSpeed += speed; 526 } 527 } 528 int speed = count == 0 ? Speed.NONE : totalSpeed / count; 529 if (WifiTracker.sVerboseLogging) { 530 Log.i(TAG, String.format("%s generated fallback speed is: %d", getSsidStr(), speed)); 531 } 532 return roundToClosestSpeedEnum(speed); 533 } 534 535 /** 536 * Updates the AccessPoint's metering based on {@link ScoredNetwork#meteredHint}, returning 537 * true if the metering changed. 538 */ 539 private boolean updateMetered(WifiNetworkScoreCache scoreCache) { 540 boolean oldMetering = mIsScoredNetworkMetered; 541 mIsScoredNetworkMetered = false; 542 543 if (isActive() && mInfo != null) { 544 NetworkKey key = NetworkKey.createFromWifiInfo(mInfo); 545 ScoredNetwork score = scoreCache.getScoredNetwork(key); 546 if (score != null) { 547 mIsScoredNetworkMetered |= score.meteredHint; 548 } 549 } else { 550 for (ScanResult result : mScanResultCache.values()) { 551 ScoredNetwork score = scoreCache.getScoredNetwork(result); 552 if (score == null) { 553 continue; 554 } 555 mIsScoredNetworkMetered |= score.meteredHint; 556 } 557 } 558 return oldMetering == mIsScoredNetworkMetered; 559 } 560 561 private void evictOldScanResults() { 562 long nowMs = SystemClock.elapsedRealtime(); 563 for (Iterator<ScanResult> iter = mScanResultCache.values().iterator(); iter.hasNext(); ) { 564 ScanResult result = iter.next(); 565 // result timestamp is in microseconds 566 if (nowMs - result.timestamp / 1000 > MAX_SCAN_RESULT_AGE_MILLIS) { 567 iter.remove(); 568 } 569 } 570 } 571 572 public boolean matches(ScanResult result) { 573 return ssid.equals(result.SSID) && security == getSecurity(result); 574 } 575 576 public boolean matches(WifiConfiguration config) { 577 if (config.isPasspoint() && mConfig != null && mConfig.isPasspoint()) { 578 return ssid.equals(removeDoubleQuotes(config.SSID)) && config.FQDN.equals(mConfig.FQDN); 579 } else { 580 return ssid.equals(removeDoubleQuotes(config.SSID)) 581 && security == getSecurity(config) 582 && (mConfig == null || mConfig.shared == config.shared); 583 } 584 } 585 586 public WifiConfiguration getConfig() { 587 return mConfig; 588 } 589 590 public String getPasspointFqdn() { 591 return mFqdn; 592 } 593 594 public void clearConfig() { 595 mConfig = null; 596 networkId = WifiConfiguration.INVALID_NETWORK_ID; 597 } 598 599 public WifiInfo getInfo() { 600 return mInfo; 601 } 602 603 /** 604 * Returns the number of levels to show for a Wifi icon, from 0 to {@link #SIGNAL_LEVELS}-1. 605 * 606 * <p>Use {@#isReachable()} to determine if an AccessPoint is in range, as this method will 607 * always return at least 0. 608 */ 609 public int getLevel() { 610 return WifiManager.calculateSignalLevel(mRssi, SIGNAL_LEVELS); 611 } 612 613 public int getRssi() { 614 return mRssi; 615 } 616 617 /** 618 * Updates {@link #mRssi}. 619 * 620 * <p>If the given connection is active, the existing value of {@link #mRssi} will be returned. 621 * If the given AccessPoint is not active, a value will be calculated from previous scan 622 * results, returning the best RSSI for all matching AccessPoints averaged with the previous 623 * value. If the access point is not connected and there are no scan results, the rssi will be 624 * set to {@link #UNREACHABLE_RSSI}. 625 */ 626 private void updateRssi() { 627 if (this.isActive()) { 628 return; 629 } 630 631 int rssi = UNREACHABLE_RSSI; 632 for (ScanResult result : mScanResultCache.values()) { 633 if (result.level > rssi) { 634 rssi = result.level; 635 } 636 } 637 638 if (rssi != UNREACHABLE_RSSI && mRssi != UNREACHABLE_RSSI) { 639 mRssi = (mRssi + rssi) / 2; // half-life previous value 640 } else { 641 mRssi = rssi; 642 } 643 } 644 645 /** 646 * Returns if the network should be considered metered. 647 */ 648 public boolean isMetered() { 649 return mIsScoredNetworkMetered 650 || WifiConfiguration.isMetered(mConfig, mInfo); 651 } 652 653 public NetworkInfo getNetworkInfo() { 654 return mNetworkInfo; 655 } 656 657 public int getSecurity() { 658 return security; 659 } 660 661 public String getSecurityString(boolean concise) { 662 Context context = mContext; 663 if (isPasspoint() || isPasspointConfig()) { 664 return concise ? context.getString(R.string.wifi_security_short_eap) : 665 context.getString(R.string.wifi_security_eap); 666 } 667 switch(security) { 668 case SECURITY_EAP: 669 return concise ? context.getString(R.string.wifi_security_short_eap) : 670 context.getString(R.string.wifi_security_eap); 671 case SECURITY_PSK: 672 switch (pskType) { 673 case PSK_WPA: 674 return concise ? context.getString(R.string.wifi_security_short_wpa) : 675 context.getString(R.string.wifi_security_wpa); 676 case PSK_WPA2: 677 return concise ? context.getString(R.string.wifi_security_short_wpa2) : 678 context.getString(R.string.wifi_security_wpa2); 679 case PSK_WPA_WPA2: 680 return concise ? context.getString(R.string.wifi_security_short_wpa_wpa2) : 681 context.getString(R.string.wifi_security_wpa_wpa2); 682 case PSK_UNKNOWN: 683 default: 684 return concise ? context.getString(R.string.wifi_security_short_psk_generic) 685 : context.getString(R.string.wifi_security_psk_generic); 686 } 687 case SECURITY_WEP: 688 return concise ? context.getString(R.string.wifi_security_short_wep) : 689 context.getString(R.string.wifi_security_wep); 690 case SECURITY_NONE: 691 default: 692 return concise ? "" : context.getString(R.string.wifi_security_none); 693 } 694 } 695 696 public String getSsidStr() { 697 return ssid; 698 } 699 700 public String getBssid() { 701 return bssid; 702 } 703 704 public CharSequence getSsid() { 705 final SpannableString str = new SpannableString(ssid); 706 str.setSpan(new TtsSpan.TelephoneBuilder(ssid).build(), 0, ssid.length(), 707 Spannable.SPAN_INCLUSIVE_INCLUSIVE); 708 return str; 709 } 710 711 public String getConfigName() { 712 if (mConfig != null && mConfig.isPasspoint()) { 713 return mConfig.providerFriendlyName; 714 } else if (mFqdn != null) { 715 return mProviderFriendlyName; 716 } else { 717 return ssid; 718 } 719 } 720 721 public DetailedState getDetailedState() { 722 if (mNetworkInfo != null) { 723 return mNetworkInfo.getDetailedState(); 724 } 725 Log.w(TAG, "NetworkInfo is null, cannot return detailed state"); 726 return null; 727 } 728 729 public boolean isCarrierAp() { 730 return mIsCarrierAp; 731 } 732 733 public int getCarrierApEapType() { 734 return mCarrierApEapType; 735 } 736 737 public String getCarrierName() { 738 return mCarrierName; 739 } 740 741 public String getSavedNetworkSummary() { 742 WifiConfiguration config = mConfig; 743 if (config != null) { 744 PackageManager pm = mContext.getPackageManager(); 745 String systemName = pm.getNameForUid(android.os.Process.SYSTEM_UID); 746 int userId = UserHandle.getUserId(config.creatorUid); 747 ApplicationInfo appInfo = null; 748 if (config.creatorName != null && config.creatorName.equals(systemName)) { 749 appInfo = mContext.getApplicationInfo(); 750 } else { 751 try { 752 IPackageManager ipm = AppGlobals.getPackageManager(); 753 appInfo = ipm.getApplicationInfo(config.creatorName, 0 /* flags */, userId); 754 } catch (RemoteException rex) { 755 } 756 } 757 if (appInfo != null && 758 !appInfo.packageName.equals(mContext.getString(R.string.settings_package)) && 759 !appInfo.packageName.equals( 760 mContext.getString(R.string.certinstaller_package))) { 761 return mContext.getString(R.string.saved_network, appInfo.loadLabel(pm)); 762 } 763 } 764 return ""; 765 } 766 767 public String getSummary() { 768 return getSettingsSummary(mConfig); 769 } 770 771 public String getSettingsSummary() { 772 return getSettingsSummary(mConfig); 773 } 774 775 private String getSettingsSummary(WifiConfiguration config) { 776 // Update to new summary 777 StringBuilder summary = new StringBuilder(); 778 779 if (isActive() && config != null && config.isPasspoint()) { 780 // This is the active connection on passpoint 781 summary.append(getSummary(mContext, getDetailedState(), 782 false, config.providerFriendlyName)); 783 } else if (isActive() && config != null && getDetailedState() == DetailedState.CONNECTED 784 && mIsCarrierAp) { 785 summary.append(String.format(mContext.getString(R.string.connected_via_carrier), mCarrierName)); 786 } else if (isActive()) { 787 // This is the active connection on non-passpoint network 788 summary.append(getSummary(mContext, getDetailedState(), 789 mInfo != null && mInfo.isEphemeral())); 790 } else if (config != null && config.isPasspoint() 791 && config.getNetworkSelectionStatus().isNetworkEnabled()) { 792 String format = mContext.getString(R.string.available_via_passpoint); 793 summary.append(String.format(format, config.providerFriendlyName)); 794 } else if (config != null && config.hasNoInternetAccess()) { 795 int messageID = config.getNetworkSelectionStatus().isNetworkPermanentlyDisabled() 796 ? R.string.wifi_no_internet_no_reconnect 797 : R.string.wifi_no_internet; 798 summary.append(mContext.getString(messageID)); 799 } else if (config != null && !config.getNetworkSelectionStatus().isNetworkEnabled()) { 800 WifiConfiguration.NetworkSelectionStatus networkStatus = 801 config.getNetworkSelectionStatus(); 802 switch (networkStatus.getNetworkSelectionDisableReason()) { 803 case WifiConfiguration.NetworkSelectionStatus.DISABLED_AUTHENTICATION_FAILURE: 804 summary.append(mContext.getString(R.string.wifi_disabled_password_failure)); 805 break; 806 case WifiConfiguration.NetworkSelectionStatus.DISABLED_BY_WRONG_PASSWORD: 807 summary.append(mContext.getString(R.string.wifi_check_password_try_again)); 808 break; 809 case WifiConfiguration.NetworkSelectionStatus.DISABLED_DHCP_FAILURE: 810 case WifiConfiguration.NetworkSelectionStatus.DISABLED_DNS_FAILURE: 811 summary.append(mContext.getString(R.string.wifi_disabled_network_failure)); 812 break; 813 case WifiConfiguration.NetworkSelectionStatus.DISABLED_ASSOCIATION_REJECTION: 814 summary.append(mContext.getString(R.string.wifi_disabled_generic)); 815 break; 816 } 817 } else if (config != null && config.getNetworkSelectionStatus().isNotRecommended()) { 818 summary.append(mContext.getString(R.string.wifi_disabled_by_recommendation_provider)); 819 } else if (mIsCarrierAp) { 820 summary.append(String.format(mContext.getString(R.string.available_via_carrier), mCarrierName)); 821 } else if (!isReachable()) { // Wifi out of range 822 summary.append(mContext.getString(R.string.wifi_not_in_range)); 823 } else { // In range, not disabled. 824 if (config != null) { // Is saved network 825 // Last attempt to connect to this failed. Show reason why 826 switch (config.recentFailure.getAssociationStatus()) { 827 case WifiConfiguration.RecentFailure.STATUS_AP_UNABLE_TO_HANDLE_NEW_STA: 828 summary.append(mContext.getString( 829 R.string.wifi_ap_unable_to_handle_new_sta)); 830 break; 831 default: 832 // "Saved" 833 summary.append(mContext.getString(R.string.wifi_remembered)); 834 break; 835 } 836 } 837 } 838 839 if (WifiTracker.sVerboseLogging) { 840 // Add RSSI/band information for this config, what was seen up to 6 seconds ago 841 // verbose WiFi Logging is only turned on thru developers settings 842 if (isActive() && mInfo != null) { 843 summary.append(" f=" + Integer.toString(mInfo.getFrequency())); 844 } 845 summary.append(" " + getVisibilityStatus()); 846 if (config != null && !config.getNetworkSelectionStatus().isNetworkEnabled()) { 847 summary.append(" (" + config.getNetworkSelectionStatus().getNetworkStatusString()); 848 if (config.getNetworkSelectionStatus().getDisableTime() > 0) { 849 long now = System.currentTimeMillis(); 850 long diff = (now - config.getNetworkSelectionStatus().getDisableTime()) / 1000; 851 long sec = diff%60; //seconds 852 long min = (diff/60)%60; //minutes 853 long hour = (min/60)%60; //hours 854 summary.append(", "); 855 if (hour > 0) summary.append(Long.toString(hour) + "h "); 856 summary.append( Long.toString(min) + "m "); 857 summary.append( Long.toString(sec) + "s "); 858 } 859 summary.append(")"); 860 } 861 862 if (config != null) { 863 WifiConfiguration.NetworkSelectionStatus networkStatus = 864 config.getNetworkSelectionStatus(); 865 for (int index = WifiConfiguration.NetworkSelectionStatus.NETWORK_SELECTION_ENABLE; 866 index < WifiConfiguration.NetworkSelectionStatus 867 .NETWORK_SELECTION_DISABLED_MAX; index++) { 868 if (networkStatus.getDisableReasonCounter(index) != 0) { 869 summary.append(" " + WifiConfiguration.NetworkSelectionStatus 870 .getNetworkDisableReasonString(index) + "=" 871 + networkStatus.getDisableReasonCounter(index)); 872 } 873 } 874 } 875 } 876 877 // If Speed label and summary are both present, use the preference combination to combine 878 // the two, else return the non-null one. 879 if (getSpeedLabel() != null && summary.length() != 0) { 880 return mContext.getResources().getString( 881 R.string.preference_summary_default_combination, 882 getSpeedLabel(), 883 summary.toString()); 884 } else if (getSpeedLabel() != null) { 885 return getSpeedLabel(); 886 } else { 887 return summary.toString(); 888 } 889 } 890 891 /** 892 * Returns the visibility status of the WifiConfiguration. 893 * 894 * @return autojoin debugging information 895 * TODO: use a string formatter 896 * ["rssi 5Ghz", "num results on 5GHz" / "rssi 5Ghz", "num results on 5GHz"] 897 * For instance [-40,5/-30,2] 898 */ 899 private String getVisibilityStatus() { 900 StringBuilder visibility = new StringBuilder(); 901 StringBuilder scans24GHz = new StringBuilder(); 902 StringBuilder scans5GHz = new StringBuilder(); 903 String bssid = null; 904 905 long now = System.currentTimeMillis(); 906 907 if (isActive() && mInfo != null) { 908 bssid = mInfo.getBSSID(); 909 if (bssid != null) { 910 visibility.append(" ").append(bssid); 911 } 912 visibility.append(" rssi=").append(mInfo.getRssi()); 913 visibility.append(" "); 914 visibility.append(" score=").append(mInfo.score); 915 if (mSpeed != Speed.NONE) { 916 visibility.append(" speed=").append(getSpeedLabel()); 917 } 918 visibility.append(String.format(" tx=%.1f,", mInfo.txSuccessRate)); 919 visibility.append(String.format("%.1f,", mInfo.txRetriesRate)); 920 visibility.append(String.format("%.1f ", mInfo.txBadRate)); 921 visibility.append(String.format("rx=%.1f", mInfo.rxSuccessRate)); 922 } 923 924 int maxRssi5 = WifiConfiguration.INVALID_RSSI; 925 int maxRssi24 = WifiConfiguration.INVALID_RSSI; 926 final int maxDisplayedScans = 4; 927 int num5 = 0; // number of scanned BSSID on 5GHz band 928 int num24 = 0; // number of scanned BSSID on 2.4Ghz band 929 int numBlackListed = 0; 930 evictOldScanResults(); 931 932 // TODO: sort list by RSSI or age 933 for (ScanResult result : mScanResultCache.values()) { 934 if (result.frequency >= LOWER_FREQ_5GHZ 935 && result.frequency <= HIGHER_FREQ_5GHZ) { 936 // Strictly speaking: [4915, 5825] 937 num5++; 938 939 if (result.level > maxRssi5) { 940 maxRssi5 = result.level; 941 } 942 if (num5 <= maxDisplayedScans) { 943 scans5GHz.append(verboseScanResultSummary(result, bssid)); 944 } 945 } else if (result.frequency >= LOWER_FREQ_24GHZ 946 && result.frequency <= HIGHER_FREQ_24GHZ) { 947 // Strictly speaking: [2412, 2482] 948 num24++; 949 950 if (result.level > maxRssi24) { 951 maxRssi24 = result.level; 952 } 953 if (num24 <= maxDisplayedScans) { 954 scans24GHz.append(verboseScanResultSummary(result, bssid)); 955 } 956 } 957 } 958 visibility.append(" ["); 959 if (num24 > 0) { 960 visibility.append("(").append(num24).append(")"); 961 if (num24 > maxDisplayedScans) { 962 visibility.append("max=").append(maxRssi24).append(","); 963 } 964 visibility.append(scans24GHz.toString()); 965 } 966 visibility.append(";"); 967 if (num5 > 0) { 968 visibility.append("(").append(num5).append(")"); 969 if (num5 > maxDisplayedScans) { 970 visibility.append("max=").append(maxRssi5).append(","); 971 } 972 visibility.append(scans5GHz.toString()); 973 } 974 if (numBlackListed > 0) 975 visibility.append("!").append(numBlackListed); 976 visibility.append("]"); 977 978 return visibility.toString(); 979 } 980 981 @VisibleForTesting 982 /* package */ String verboseScanResultSummary(ScanResult result, String bssid) { 983 StringBuilder stringBuilder = new StringBuilder(); 984 stringBuilder.append(" \n{").append(result.BSSID); 985 if (result.BSSID.equals(bssid)) { 986 stringBuilder.append("*"); 987 } 988 stringBuilder.append("=").append(result.frequency); 989 stringBuilder.append(",").append(result.level); 990 int speed = getSpecificApSpeed(result); 991 if (speed != Speed.NONE) { 992 stringBuilder.append(",") 993 .append(getSpeedLabel(speed)); 994 } 995 stringBuilder.append("}"); 996 return stringBuilder.toString(); 997 } 998 999 @Speed private int getSpecificApSpeed(ScanResult result) { 1000 TimestampedScoredNetwork timedScore = mScoredNetworkCache.get(result.BSSID); 1001 if (timedScore == null) { 1002 return Speed.NONE; 1003 } 1004 // For debugging purposes we may want to use mRssi rather than result.level as the average 1005 // speed wil be determined by mRssi 1006 return timedScore.getScore().calculateBadge(result.level); 1007 } 1008 1009 /** 1010 * Return whether this is the active connection. 1011 * For ephemeral connections (networkId is invalid), this returns false if the network is 1012 * disconnected. 1013 */ 1014 public boolean isActive() { 1015 return mNetworkInfo != null && 1016 (networkId != WifiConfiguration.INVALID_NETWORK_ID || 1017 mNetworkInfo.getState() != State.DISCONNECTED); 1018 } 1019 1020 public boolean isConnectable() { 1021 return getLevel() != -1 && getDetailedState() == null; 1022 } 1023 1024 public boolean isEphemeral() { 1025 return mInfo != null && mInfo.isEphemeral() && 1026 mNetworkInfo != null && mNetworkInfo.getState() != State.DISCONNECTED; 1027 } 1028 1029 /** 1030 * Return true if this AccessPoint represents a Passpoint AP. 1031 */ 1032 public boolean isPasspoint() { 1033 return mConfig != null && mConfig.isPasspoint(); 1034 } 1035 1036 /** 1037 * Return true if this AccessPoint represents a Passpoint provider configuration. 1038 */ 1039 public boolean isPasspointConfig() { 1040 return mFqdn != null; 1041 } 1042 1043 /** 1044 * Return whether the given {@link WifiInfo} is for this access point. 1045 * If the current AP does not have a network Id then the config is used to 1046 * match based on SSID and security. 1047 */ 1048 private boolean isInfoForThisAccessPoint(WifiConfiguration config, WifiInfo info) { 1049 if (isPasspoint() == false && networkId != WifiConfiguration.INVALID_NETWORK_ID) { 1050 return networkId == info.getNetworkId(); 1051 } else if (config != null) { 1052 return matches(config); 1053 } 1054 else { 1055 // Might be an ephemeral connection with no WifiConfiguration. Try matching on SSID. 1056 // (Note that we only do this if the WifiConfiguration explicitly equals INVALID). 1057 // TODO: Handle hex string SSIDs. 1058 return ssid.equals(removeDoubleQuotes(info.getSSID())); 1059 } 1060 } 1061 1062 public boolean isSaved() { 1063 return networkId != WifiConfiguration.INVALID_NETWORK_ID; 1064 } 1065 1066 public Object getTag() { 1067 return mTag; 1068 } 1069 1070 public void setTag(Object tag) { 1071 mTag = tag; 1072 } 1073 1074 /** 1075 * Generate and save a default wifiConfiguration with common values. 1076 * Can only be called for unsecured networks. 1077 */ 1078 public void generateOpenNetworkConfig() { 1079 if (security != SECURITY_NONE) 1080 throw new IllegalStateException(); 1081 if (mConfig != null) 1082 return; 1083 mConfig = new WifiConfiguration(); 1084 mConfig.SSID = AccessPoint.convertToQuotedString(ssid); 1085 mConfig.allowedKeyManagement.set(KeyMgmt.NONE); 1086 } 1087 1088 void loadConfig(WifiConfiguration config) { 1089 ssid = (config.SSID == null ? "" : removeDoubleQuotes(config.SSID)); 1090 bssid = config.BSSID; 1091 security = getSecurity(config); 1092 networkId = config.networkId; 1093 mConfig = config; 1094 } 1095 1096 private void initWithScanResult(ScanResult result) { 1097 ssid = result.SSID; 1098 bssid = result.BSSID; 1099 security = getSecurity(result); 1100 if (security == SECURITY_PSK) 1101 pskType = getPskType(result); 1102 1103 mScanResultCache.put(result.BSSID, result); 1104 updateRssi(); 1105 mIsCarrierAp = result.isCarrierAp; 1106 mCarrierApEapType = result.carrierApEapType; 1107 mCarrierName = result.carrierName; 1108 } 1109 1110 public void saveWifiState(Bundle savedState) { 1111 if (ssid != null) savedState.putString(KEY_SSID, getSsidStr()); 1112 savedState.putInt(KEY_SECURITY, security); 1113 savedState.putInt(KEY_SPEED, mSpeed); 1114 savedState.putInt(KEY_PSKTYPE, pskType); 1115 if (mConfig != null) savedState.putParcelable(KEY_CONFIG, mConfig); 1116 savedState.putParcelable(KEY_WIFIINFO, mInfo); 1117 evictOldScanResults(); 1118 savedState.putParcelableArrayList(KEY_SCANRESULTCACHE, 1119 new ArrayList<ScanResult>(mScanResultCache.values())); 1120 savedState.putParcelableArrayList(KEY_SCOREDNETWORKCACHE, 1121 new ArrayList<>(mScoredNetworkCache.values())); 1122 if (mNetworkInfo != null) { 1123 savedState.putParcelable(KEY_NETWORKINFO, mNetworkInfo); 1124 } 1125 if (mFqdn != null) { 1126 savedState.putString(KEY_FQDN, mFqdn); 1127 } 1128 if (mProviderFriendlyName != null) { 1129 savedState.putString(KEY_PROVIDER_FRIENDLY_NAME, mProviderFriendlyName); 1130 } 1131 savedState.putBoolean(KEY_IS_CARRIER_AP, mIsCarrierAp); 1132 savedState.putInt(KEY_CARRIER_AP_EAP_TYPE, mCarrierApEapType); 1133 savedState.putString(KEY_CARRIER_NAME, mCarrierName); 1134 } 1135 1136 public void setListener(AccessPointListener listener) { 1137 mAccessPointListener = listener; 1138 } 1139 1140 /** 1141 * Update the AP with the given scan result. 1142 * 1143 * @param result the ScanResult to add to the AccessPoint scan cache 1144 * @param evictOldScanResults whether stale scan results should be removed 1145 * from the cache during this update process 1146 * @return true if the scan result update caused a change in state which would impact ranking 1147 * or AccessPoint rendering (e.g. wifi level, security) 1148 */ 1149 boolean update(ScanResult result, boolean evictOldScanResults) { 1150 if (matches(result)) { 1151 int oldLevel = getLevel(); 1152 1153 /* Add or update the scan result for the BSSID */ 1154 mScanResultCache.put(result.BSSID, result); 1155 if (evictOldScanResults) evictOldScanResults(); 1156 updateRssi(); 1157 int newLevel = getLevel(); 1158 1159 if (newLevel > 0 && newLevel != oldLevel) { 1160 // Only update labels on visible rssi changes 1161 updateSpeed(); 1162 if (mAccessPointListener != null) { 1163 mAccessPointListener.onLevelChanged(this); 1164 } 1165 } 1166 // This flag only comes from scans, is not easily saved in config 1167 if (security == SECURITY_PSK) { 1168 pskType = getPskType(result); 1169 } 1170 1171 if (mAccessPointListener != null) { 1172 mAccessPointListener.onAccessPointChanged(this); 1173 } 1174 1175 // The carrier info in the ScanResult is set by the platform based on the SSID and will 1176 // always be the same for all matching scan results. 1177 mIsCarrierAp = result.isCarrierAp; 1178 mCarrierApEapType = result.carrierApEapType; 1179 mCarrierName = result.carrierName; 1180 1181 return true; 1182 } 1183 return false; 1184 } 1185 1186 /** Attempt to update the AccessPoint and return true if an update occurred. */ 1187 public boolean update( 1188 @Nullable WifiConfiguration config, WifiInfo info, NetworkInfo networkInfo) { 1189 boolean updated = false; 1190 final int oldLevel = getLevel(); 1191 if (info != null && isInfoForThisAccessPoint(config, info)) { 1192 updated = (mInfo == null); 1193 if (mConfig != config) { 1194 // We do not set updated = true as we do not want to increase the amount of sorting 1195 // and copying performed in WifiTracker at this time. If issues involving refresh 1196 // are still seen, we will investigate further. 1197 update(config); // Notifies the AccessPointListener of the change 1198 } 1199 if (mRssi != info.getRssi() && info.getRssi() != WifiInfo.INVALID_RSSI) { 1200 mRssi = info.getRssi(); 1201 updated = true; 1202 } else if (mNetworkInfo != null && networkInfo != null 1203 && mNetworkInfo.getDetailedState() != networkInfo.getDetailedState()) { 1204 updated = true; 1205 } 1206 mInfo = info; 1207 mNetworkInfo = networkInfo; 1208 } else if (mInfo != null) { 1209 updated = true; 1210 mInfo = null; 1211 mNetworkInfo = null; 1212 } 1213 if (updated && mAccessPointListener != null) { 1214 mAccessPointListener.onAccessPointChanged(this); 1215 1216 if (oldLevel != getLevel() /* current level */) { 1217 mAccessPointListener.onLevelChanged(this); 1218 } 1219 } 1220 return updated; 1221 } 1222 1223 void update(@Nullable WifiConfiguration config) { 1224 mConfig = config; 1225 networkId = config != null ? config.networkId : WifiConfiguration.INVALID_NETWORK_ID; 1226 if (mAccessPointListener != null) { 1227 mAccessPointListener.onAccessPointChanged(this); 1228 } 1229 } 1230 1231 @VisibleForTesting 1232 void setRssi(int rssi) { 1233 mRssi = rssi; 1234 } 1235 1236 /** Sets the rssi to {@link #UNREACHABLE_RSSI}. */ 1237 void setUnreachable() { 1238 setRssi(AccessPoint.UNREACHABLE_RSSI); 1239 } 1240 1241 int getSpeed() { return mSpeed;} 1242 1243 @Nullable 1244 String getSpeedLabel() { 1245 return getSpeedLabel(mSpeed); 1246 } 1247 1248 @Nullable 1249 @Speed 1250 private int roundToClosestSpeedEnum(int speed) { 1251 if (speed < Speed.SLOW) { 1252 return Speed.NONE; 1253 } else if (speed < (Speed.SLOW + Speed.MODERATE) / 2) { 1254 return Speed.SLOW; 1255 } else if (speed < (Speed.MODERATE + Speed.FAST) / 2) { 1256 return Speed.MODERATE; 1257 } else if (speed < (Speed.FAST + Speed.VERY_FAST) / 2) { 1258 return Speed.FAST; 1259 } else { 1260 return Speed.VERY_FAST; 1261 } 1262 } 1263 1264 @Nullable 1265 private String getSpeedLabel(@Speed int speed) { 1266 switch (speed) { 1267 case Speed.VERY_FAST: 1268 return mContext.getString(R.string.speed_label_very_fast); 1269 case Speed.FAST: 1270 return mContext.getString(R.string.speed_label_fast); 1271 case Speed.MODERATE: 1272 return mContext.getString(R.string.speed_label_okay); 1273 case Speed.SLOW: 1274 return mContext.getString(R.string.speed_label_slow); 1275 case Speed.NONE: 1276 default: 1277 return null; 1278 } 1279 } 1280 1281 /** Return true if the current RSSI is reachable, and false otherwise. */ 1282 public boolean isReachable() { 1283 return mRssi != UNREACHABLE_RSSI; 1284 } 1285 1286 public static String getSummary(Context context, String ssid, DetailedState state, 1287 boolean isEphemeral, String passpointProvider) { 1288 if (state == DetailedState.CONNECTED && ssid == null) { 1289 if (TextUtils.isEmpty(passpointProvider) == false) { 1290 // Special case for connected + passpoint networks. 1291 String format = context.getString(R.string.connected_via_passpoint); 1292 return String.format(format, passpointProvider); 1293 } else if (isEphemeral) { 1294 // Special case for connected + ephemeral networks. 1295 final NetworkScoreManager networkScoreManager = context.getSystemService( 1296 NetworkScoreManager.class); 1297 NetworkScorerAppData scorer = networkScoreManager.getActiveScorer(); 1298 if (scorer != null && scorer.getRecommendationServiceLabel() != null) { 1299 String format = context.getString(R.string.connected_via_network_scorer); 1300 return String.format(format, scorer.getRecommendationServiceLabel()); 1301 } else { 1302 return context.getString(R.string.connected_via_network_scorer_default); 1303 } 1304 } 1305 } 1306 1307 // Case when there is wifi connected without internet connectivity. 1308 final ConnectivityManager cm = (ConnectivityManager) 1309 context.getSystemService(Context.CONNECTIVITY_SERVICE); 1310 if (state == DetailedState.CONNECTED) { 1311 IWifiManager wifiManager = IWifiManager.Stub.asInterface( 1312 ServiceManager.getService(Context.WIFI_SERVICE)); 1313 NetworkCapabilities nc = null; 1314 1315 try { 1316 nc = cm.getNetworkCapabilities(wifiManager.getCurrentNetwork()); 1317 } catch (RemoteException e) {} 1318 1319 if (nc != null) { 1320 if (nc.hasCapability(nc.NET_CAPABILITY_CAPTIVE_PORTAL)) { 1321 int id = context.getResources() 1322 .getIdentifier("network_available_sign_in", "string", "android"); 1323 return context.getString(id); 1324 } else if (!nc.hasCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED)) { 1325 return context.getString(R.string.wifi_connected_no_internet); 1326 } 1327 } 1328 } 1329 if (state == null) { 1330 Log.w(TAG, "state is null, returning empty summary"); 1331 return ""; 1332 } 1333 String[] formats = context.getResources().getStringArray((ssid == null) 1334 ? R.array.wifi_status : R.array.wifi_status_with_ssid); 1335 int index = state.ordinal(); 1336 1337 if (index >= formats.length || formats[index].length() == 0) { 1338 return ""; 1339 } 1340 return String.format(formats[index], ssid); 1341 } 1342 1343 public static String getSummary(Context context, DetailedState state, boolean isEphemeral) { 1344 return getSummary(context, null, state, isEphemeral, null); 1345 } 1346 1347 public static String getSummary(Context context, DetailedState state, boolean isEphemeral, 1348 String passpointProvider) { 1349 return getSummary(context, null, state, isEphemeral, passpointProvider); 1350 } 1351 1352 public static String convertToQuotedString(String string) { 1353 return "\"" + string + "\""; 1354 } 1355 1356 private static int getPskType(ScanResult result) { 1357 boolean wpa = result.capabilities.contains("WPA-PSK"); 1358 boolean wpa2 = result.capabilities.contains("WPA2-PSK"); 1359 if (wpa2 && wpa) { 1360 return PSK_WPA_WPA2; 1361 } else if (wpa2) { 1362 return PSK_WPA2; 1363 } else if (wpa) { 1364 return PSK_WPA; 1365 } else { 1366 Log.w(TAG, "Received abnormal flag string: " + result.capabilities); 1367 return PSK_UNKNOWN; 1368 } 1369 } 1370 1371 private static int getSecurity(ScanResult result) { 1372 if (result.capabilities.contains("WEP")) { 1373 return SECURITY_WEP; 1374 } else if (result.capabilities.contains("PSK")) { 1375 return SECURITY_PSK; 1376 } else if (result.capabilities.contains("EAP")) { 1377 return SECURITY_EAP; 1378 } 1379 return SECURITY_NONE; 1380 } 1381 1382 static int getSecurity(WifiConfiguration config) { 1383 if (config.allowedKeyManagement.get(KeyMgmt.WPA_PSK)) { 1384 return SECURITY_PSK; 1385 } 1386 if (config.allowedKeyManagement.get(KeyMgmt.WPA_EAP) || 1387 config.allowedKeyManagement.get(KeyMgmt.IEEE8021X)) { 1388 return SECURITY_EAP; 1389 } 1390 return (config.wepKeys[0] != null) ? SECURITY_WEP : SECURITY_NONE; 1391 } 1392 1393 public static String securityToString(int security, int pskType) { 1394 if (security == SECURITY_WEP) { 1395 return "WEP"; 1396 } else if (security == SECURITY_PSK) { 1397 if (pskType == PSK_WPA) { 1398 return "WPA"; 1399 } else if (pskType == PSK_WPA2) { 1400 return "WPA2"; 1401 } else if (pskType == PSK_WPA_WPA2) { 1402 return "WPA_WPA2"; 1403 } 1404 return "PSK"; 1405 } else if (security == SECURITY_EAP) { 1406 return "EAP"; 1407 } 1408 return "NONE"; 1409 } 1410 1411 static String removeDoubleQuotes(String string) { 1412 if (TextUtils.isEmpty(string)) { 1413 return ""; 1414 } 1415 int length = string.length(); 1416 if ((length > 1) && (string.charAt(0) == '"') 1417 && (string.charAt(length - 1) == '"')) { 1418 return string.substring(1, length - 1); 1419 } 1420 return string; 1421 } 1422 1423 public interface AccessPointListener { 1424 void onAccessPointChanged(AccessPoint accessPoint); 1425 void onLevelChanged(AccessPoint accessPoint); 1426 } 1427} 1428