AccessPoint.java revision a78256947d190a84169a31340c086cfacfcf0697
1/* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.settingslib.wifi; 18 19import android.annotation.IntDef; 20import android.annotation.Nullable; 21import android.app.AppGlobals; 22import android.content.Context; 23import android.content.pm.ApplicationInfo; 24import android.content.pm.IPackageManager; 25import android.content.pm.PackageManager; 26import android.net.ConnectivityManager; 27import android.net.NetworkCapabilities; 28import android.net.NetworkInfo; 29import android.net.NetworkInfo.DetailedState; 30import android.net.NetworkInfo.State; 31import android.net.NetworkKey; 32import android.net.NetworkScoreManager; 33import android.net.NetworkScorerAppData; 34import android.net.ScoredNetwork; 35import android.net.WifiKey; 36import android.net.wifi.IWifiManager; 37import android.net.wifi.ScanResult; 38import android.net.wifi.WifiConfiguration; 39import android.net.wifi.WifiConfiguration.KeyMgmt; 40import android.net.wifi.WifiEnterpriseConfig; 41import android.net.wifi.WifiInfo; 42import android.net.wifi.WifiManager; 43import android.net.wifi.WifiNetworkScoreCache; 44import android.net.wifi.hotspot2.PasspointConfiguration; 45import android.os.Bundle; 46import android.os.RemoteException; 47import android.os.ServiceManager; 48import android.os.SystemClock; 49import android.os.UserHandle; 50import android.support.annotation.NonNull; 51import android.text.Spannable; 52import android.text.SpannableString; 53import android.text.TextUtils; 54import android.text.format.DateUtils; 55import android.text.style.TtsSpan; 56import android.util.Log; 57 58import com.android.internal.annotations.VisibleForTesting; 59import com.android.settingslib.R; 60 61import java.lang.annotation.Retention; 62import java.lang.annotation.RetentionPolicy; 63import java.util.ArrayList; 64import java.util.HashMap; 65import java.util.Iterator; 66import java.util.Map; 67import java.util.concurrent.ConcurrentHashMap; 68import java.util.concurrent.atomic.AtomicInteger; 69 70 71public class AccessPoint implements Comparable<AccessPoint> { 72 static final String TAG = "SettingsLib.AccessPoint"; 73 74 /** 75 * Lower bound on the 2.4 GHz (802.11b/g/n) WLAN channels 76 */ 77 public static final int LOWER_FREQ_24GHZ = 2400; 78 79 /** 80 * Upper bound on the 2.4 GHz (802.11b/g/n) WLAN channels 81 */ 82 public static final int HIGHER_FREQ_24GHZ = 2500; 83 84 /** 85 * Lower bound on the 5.0 GHz (802.11a/h/j/n/ac) WLAN channels 86 */ 87 public static final int LOWER_FREQ_5GHZ = 4900; 88 89 /** 90 * Upper bound on the 5.0 GHz (802.11a/h/j/n/ac) WLAN channels 91 */ 92 public static final int HIGHER_FREQ_5GHZ = 5900; 93 94 @IntDef({Speed.NONE, Speed.SLOW, Speed.MODERATE, Speed.FAST, Speed.VERY_FAST}) 95 @Retention(RetentionPolicy.SOURCE) 96 public @interface Speed { 97 /** 98 * Constant value representing an unlabeled / unscored network. 99 */ 100 int NONE = 0; 101 /** 102 * Constant value representing a slow speed network connection. 103 */ 104 int SLOW = 5; 105 /** 106 * Constant value representing a medium speed network connection. 107 */ 108 int MODERATE = 10; 109 /** 110 * Constant value representing a fast speed network connection. 111 */ 112 int FAST = 20; 113 /** 114 * Constant value representing a very fast speed network connection. 115 */ 116 int VERY_FAST = 30; 117 } 118 119 /** 120 * Experimental: we should be able to show the user the list of BSSIDs and bands 121 * for that SSID. 122 * For now this data is used only with Verbose Logging so as to show the band and number 123 * of BSSIDs on which that network is seen. 124 */ 125 private final ConcurrentHashMap<String, ScanResult> mScanResultCache = 126 new ConcurrentHashMap<String, ScanResult>(32); 127 128 /** 129 * Map of BSSIDs to scored networks for individual bssids. 130 * 131 * <p>This cache should not be evicted with scan results, as the values here are used to 132 * generate a fallback in the absence of scores for the visible APs. 133 */ 134 private final Map<String, TimestampedScoredNetwork> mScoredNetworkCache = new HashMap<>(); 135 136 /** Maximum age in millis of cached scored networks in {@link #mScoredNetworkCache}. */ 137 @VisibleForTesting static final long MAX_CACHED_SCORE_AGE_MILLIS = 138 24 * DateUtils.DAY_IN_MILLIS; 139 140 /** Maximum age of scan results to hold onto while actively scanning. **/ 141 private static final long MAX_SCAN_RESULT_AGE_MILLIS = 15000; 142 143 static final String KEY_NETWORKINFO = "key_networkinfo"; 144 static final String KEY_WIFIINFO = "key_wifiinfo"; 145 static final String KEY_SCANRESULT = "key_scanresult"; 146 static final String KEY_SSID = "key_ssid"; 147 static final String KEY_SECURITY = "key_security"; 148 static final String KEY_SPEED = "key_speed"; 149 static final String KEY_PSKTYPE = "key_psktype"; 150 static final String KEY_SCANRESULTCACHE = "key_scanresultcache"; 151 static final String KEY_SCOREDNETWORKCACHE = "key_scorednetworkcache"; 152 static final String KEY_CONFIG = "key_config"; 153 static final String KEY_FQDN = "key_fqdn"; 154 static final String KEY_PROVIDER_FRIENDLY_NAME = "key_provider_friendly_name"; 155 static final String KEY_IS_CARRIER_AP = "key_is_carrier_ap"; 156 static final String KEY_CARRIER_AP_EAP_TYPE = "key_carrier_ap_eap_type"; 157 static final String KEY_CARRIER_NAME = "key_carrier_name"; 158 static final AtomicInteger sLastId = new AtomicInteger(0); 159 160 /** 161 * These values are matched in string arrays -- changes must be kept in sync 162 */ 163 public static final int SECURITY_NONE = 0; 164 public static final int SECURITY_WEP = 1; 165 public static final int SECURITY_PSK = 2; 166 public static final int SECURITY_EAP = 3; 167 168 private static final int PSK_UNKNOWN = 0; 169 private static final int PSK_WPA = 1; 170 private static final int PSK_WPA2 = 2; 171 private static final int PSK_WPA_WPA2 = 3; 172 173 /** 174 * The number of distinct wifi levels. 175 * 176 * <p>Must keep in sync with {@link R.array.wifi_signal} and {@link WifiManager#RSSI_LEVELS}. 177 */ 178 public static final int SIGNAL_LEVELS = 5; 179 180 public static final int UNREACHABLE_RSSI = Integer.MIN_VALUE; 181 182 private final Context mContext; 183 184 private String ssid; 185 private String bssid; 186 private int security; 187 private int networkId = WifiConfiguration.INVALID_NETWORK_ID; 188 189 private int pskType = PSK_UNKNOWN; 190 191 private WifiConfiguration mConfig; 192 193 private int mRssi = UNREACHABLE_RSSI; 194 private long mSeen = 0; 195 196 private WifiInfo mInfo; 197 private NetworkInfo mNetworkInfo; 198 AccessPointListener mAccessPointListener; 199 200 private Object mTag; 201 202 @Speed private int mSpeed = Speed.NONE; 203 private boolean mIsScoredNetworkMetered = false; 204 205 // used to co-relate internal vs returned accesspoint. 206 int mId; 207 208 /** 209 * Information associated with the {@link PasspointConfiguration}. Only maintaining 210 * the relevant info to preserve spaces. 211 */ 212 private String mFqdn; 213 private String mProviderFriendlyName; 214 215 private boolean mIsCarrierAp = false; 216 /** 217 * The EAP type {@link WifiEnterpriseConfig.Eap} associated with this AP if it is a carrier AP. 218 */ 219 private int mCarrierApEapType = WifiEnterpriseConfig.Eap.NONE; 220 private String mCarrierName = null; 221 222 public AccessPoint(Context context, Bundle savedState) { 223 mContext = context; 224 mConfig = savedState.getParcelable(KEY_CONFIG); 225 if (mConfig != null) { 226 loadConfig(mConfig); 227 } 228 if (savedState.containsKey(KEY_SSID)) { 229 ssid = savedState.getString(KEY_SSID); 230 } 231 if (savedState.containsKey(KEY_SECURITY)) { 232 security = savedState.getInt(KEY_SECURITY); 233 } 234 if (savedState.containsKey(KEY_SPEED)) { 235 mSpeed = savedState.getInt(KEY_SPEED); 236 } 237 if (savedState.containsKey(KEY_PSKTYPE)) { 238 pskType = savedState.getInt(KEY_PSKTYPE); 239 } 240 mInfo = savedState.getParcelable(KEY_WIFIINFO); 241 if (savedState.containsKey(KEY_NETWORKINFO)) { 242 mNetworkInfo = savedState.getParcelable(KEY_NETWORKINFO); 243 } 244 if (savedState.containsKey(KEY_SCANRESULTCACHE)) { 245 ArrayList<ScanResult> scanResultArrayList = 246 savedState.getParcelableArrayList(KEY_SCANRESULTCACHE); 247 mScanResultCache.clear(); 248 for (ScanResult result : scanResultArrayList) { 249 mScanResultCache.put(result.BSSID, result); 250 } 251 } 252 if (savedState.containsKey(KEY_SCOREDNETWORKCACHE)) { 253 ArrayList<TimestampedScoredNetwork> scoredNetworkArrayList = 254 savedState.getParcelableArrayList(KEY_SCOREDNETWORKCACHE); 255 for (TimestampedScoredNetwork timedScore : scoredNetworkArrayList) { 256 mScoredNetworkCache.put(timedScore.getScore().networkKey.wifiKey.bssid, timedScore); 257 } 258 } 259 if (savedState.containsKey(KEY_FQDN)) { 260 mFqdn = savedState.getString(KEY_FQDN); 261 } 262 if (savedState.containsKey(KEY_PROVIDER_FRIENDLY_NAME)) { 263 mProviderFriendlyName = savedState.getString(KEY_PROVIDER_FRIENDLY_NAME); 264 } 265 if (savedState.containsKey(KEY_IS_CARRIER_AP)) { 266 mIsCarrierAp = savedState.getBoolean(KEY_IS_CARRIER_AP); 267 } 268 if (savedState.containsKey(KEY_CARRIER_AP_EAP_TYPE)) { 269 mCarrierApEapType = savedState.getInt(KEY_CARRIER_AP_EAP_TYPE); 270 } 271 if (savedState.containsKey(KEY_CARRIER_NAME)) { 272 mCarrierName = savedState.getString(KEY_CARRIER_NAME); 273 } 274 update(mConfig, mInfo, mNetworkInfo); 275 276 // Do not evict old scan results on initial creation 277 updateRssi(); 278 updateSeen(); 279 mId = sLastId.incrementAndGet(); 280 } 281 282 public AccessPoint(Context context, WifiConfiguration config) { 283 mContext = context; 284 loadConfig(config); 285 mId = sLastId.incrementAndGet(); 286 } 287 288 /** 289 * Initialize an AccessPoint object for a {@link PasspointConfiguration}. This is mainly 290 * used by "Saved Networks" page for managing the saved {@link PasspointConfiguration}. 291 */ 292 public AccessPoint(Context context, PasspointConfiguration config) { 293 mContext = context; 294 mFqdn = config.getHomeSp().getFqdn(); 295 mProviderFriendlyName = config.getHomeSp().getFriendlyName(); 296 mId = sLastId.incrementAndGet(); 297 } 298 299 AccessPoint(Context context, AccessPoint other) { 300 mContext = context; 301 copyFrom(other); 302 } 303 304 AccessPoint(Context context, ScanResult result) { 305 mContext = context; 306 initWithScanResult(result); 307 mId = sLastId.incrementAndGet(); 308 } 309 310 /** 311 * Copy accesspoint information. NOTE: We do not copy tag information because that is never 312 * set on the internal copy. 313 * @param that 314 */ 315 void copyFrom(AccessPoint that) { 316 that.evictOldScanResults(); 317 this.ssid = that.ssid; 318 this.bssid = that.bssid; 319 this.security = that.security; 320 this.networkId = that.networkId; 321 this.pskType = that.pskType; 322 this.mConfig = that.mConfig; //TODO: Watch out, this object is mutated. 323 this.mRssi = that.mRssi; 324 this.mSeen = that.mSeen; 325 this.mInfo = that.mInfo; 326 this.mNetworkInfo = that.mNetworkInfo; 327 this.mScanResultCache.clear(); 328 this.mScanResultCache.putAll(that.mScanResultCache); 329 this.mScoredNetworkCache.clear(); 330 this.mScoredNetworkCache.putAll(that.mScoredNetworkCache); 331 this.mId = that.mId; 332 this.mSpeed = that.mSpeed; 333 this.mIsScoredNetworkMetered = that.mIsScoredNetworkMetered; 334 this.mIsCarrierAp = that.mIsCarrierAp; 335 this.mCarrierApEapType = that.mCarrierApEapType; 336 this.mCarrierName = that.mCarrierName; 337 } 338 339 /** 340 * Returns a negative integer, zero, or a positive integer if this AccessPoint is less than, 341 * equal to, or greater than the other AccessPoint. 342 * 343 * Sort order rules for AccessPoints: 344 * 1. Active before inactive 345 * 2. Reachable before unreachable 346 * 3. Saved before unsaved 347 * 4. Network speed value 348 * 5. Stronger signal before weaker signal 349 * 6. SSID alphabetically 350 * 351 * Note that AccessPoints with a signal are usually also Reachable, 352 * and will thus appear before unreachable saved AccessPoints. 353 */ 354 @Override 355 public int compareTo(@NonNull AccessPoint other) { 356 // Active one goes first. 357 if (isActive() && !other.isActive()) return -1; 358 if (!isActive() && other.isActive()) return 1; 359 360 // Reachable one goes before unreachable one. 361 if (isReachable() && !other.isReachable()) return -1; 362 if (!isReachable() && other.isReachable()) return 1; 363 364 // Configured (saved) one goes before unconfigured one. 365 if (isSaved() && !other.isSaved()) return -1; 366 if (!isSaved() && other.isSaved()) return 1; 367 368 // Faster speeds go before slower speeds - but only if visible change in speed label 369 if (getSpeed() != other.getSpeed()) { 370 return other.getSpeed() - getSpeed(); 371 } 372 373 // Sort by signal strength, bucketed by level 374 int difference = WifiManager.calculateSignalLevel(other.mRssi, SIGNAL_LEVELS) 375 - WifiManager.calculateSignalLevel(mRssi, SIGNAL_LEVELS); 376 if (difference != 0) { 377 return difference; 378 } 379 380 // Sort by ssid. 381 difference = getSsidStr().compareToIgnoreCase(other.getSsidStr()); 382 if (difference != 0) { 383 return difference; 384 } 385 386 // Do a case sensitive comparison to distinguish SSIDs that differ in case only 387 return getSsidStr().compareTo(other.getSsidStr()); 388 } 389 390 @Override 391 public boolean equals(Object other) { 392 if (!(other instanceof AccessPoint)) return false; 393 return (this.compareTo((AccessPoint) other) == 0); 394 } 395 396 @Override 397 public int hashCode() { 398 int result = 0; 399 if (mInfo != null) result += 13 * mInfo.hashCode(); 400 result += 19 * mRssi; 401 result += 23 * networkId; 402 result += 29 * ssid.hashCode(); 403 return result; 404 } 405 406 @Override 407 public String toString() { 408 StringBuilder builder = new StringBuilder().append("AccessPoint(") 409 .append(ssid); 410 if (bssid != null) { 411 builder.append(":").append(bssid); 412 } 413 if (isSaved()) { 414 builder.append(',').append("saved"); 415 } 416 if (isActive()) { 417 builder.append(',').append("active"); 418 } 419 if (isEphemeral()) { 420 builder.append(',').append("ephemeral"); 421 } 422 if (isConnectable()) { 423 builder.append(',').append("connectable"); 424 } 425 if (security != SECURITY_NONE) { 426 builder.append(',').append(securityToString(security, pskType)); 427 } 428 builder.append(",level=").append(getLevel()); 429 if (mSpeed != Speed.NONE) { 430 builder.append(",speed=").append(mSpeed); 431 } 432 builder.append(",metered=").append(isMetered()); 433 434 return builder.append(')').toString(); 435 } 436 437 /** 438 * Updates the AccessPoint rankingScore, metering, and speed, returning true if the data has 439 * changed. 440 * 441 * @param scoreCache The score cache to use to retrieve scores. 442 * @param scoringUiEnabled Whether to show scoring and badging UI. 443 */ 444 boolean update(WifiNetworkScoreCache scoreCache, boolean scoringUiEnabled) { 445 boolean scoreChanged = false; 446 if (scoringUiEnabled) { 447 scoreChanged = updateScores(scoreCache); 448 } 449 return updateMetered(scoreCache) || scoreChanged; 450 } 451 452 /** 453 * Updates the AccessPoint rankingScore and speed, returning true if the data has changed. 454 * 455 * <p>Any cached {@link TimestampedScoredNetwork} objects older than 456 * {@link #MAX_CACHED_SCORE_AGE_MILLIS} will be removed when this method is invoked. 457 * 458 * <p>Precondition: {@link #mRssi} is up to date before invoking this method. 459 * 460 * @param scoreCache The score cache to use to retrieve scores. 461 * @return true if the set speed has changed 462 */ 463 private boolean updateScores(WifiNetworkScoreCache scoreCache) { 464 long nowMillis = SystemClock.elapsedRealtime(); 465 for (ScanResult result : mScanResultCache.values()) { 466 ScoredNetwork score = scoreCache.getScoredNetwork(result); 467 if (score == null) { 468 continue; 469 } 470 TimestampedScoredNetwork timedScore = mScoredNetworkCache.get(result.BSSID); 471 if (timedScore == null) { 472 mScoredNetworkCache.put( 473 result.BSSID, new TimestampedScoredNetwork(score, nowMillis)); 474 } else { 475 // Update data since the has been seen in the score cache 476 timedScore.update(score, nowMillis); 477 } 478 } 479 480 // Remove old cached networks 481 long evictionCutoff = nowMillis - MAX_CACHED_SCORE_AGE_MILLIS; 482 Iterator<TimestampedScoredNetwork> iterator = mScoredNetworkCache.values().iterator(); 483 iterator.forEachRemaining(timestampedScoredNetwork -> { 484 if (timestampedScoredNetwork.getUpdatedTimestampMillis() < evictionCutoff) { 485 iterator.remove(); 486 } 487 }); 488 489 return updateSpeed(); 490 } 491 492 /** 493 * Updates the internal speed, returning true if the update resulted in a speed label change. 494 */ 495 private boolean updateSpeed() { 496 int oldSpeed = mSpeed; 497 mSpeed = generateAverageSpeedForSsid(); 498 499 boolean changed = oldSpeed != mSpeed; 500 if(WifiTracker.sVerboseLogging && changed) { 501 Log.i(TAG, String.format("%s: Set speed to %d", ssid, mSpeed)); 502 } 503 return changed; 504 } 505 506 /** Creates a speed value for the current {@link #mRssi} by averaging all non zero badges. */ 507 @Speed private int generateAverageSpeedForSsid() { 508 if (mScoredNetworkCache.isEmpty()) { 509 return Speed.NONE; 510 } 511 512 if (Log.isLoggable(TAG, Log.DEBUG)) { 513 Log.d(TAG, String.format("Generating fallbackspeed for %s using cache: %s", 514 getSsidStr(), mScoredNetworkCache)); 515 } 516 517 // TODO(b/63073866): If flickering issues persist, consider mapping using getLevel rather 518 // than specific rssi value so score doesn't change without a visible wifi bar change. This 519 // issue is likely to be more evident for the active AP whose RSSI value is not half-lifed. 520 521 int count = 0; 522 int totalSpeed = 0; 523 for (TimestampedScoredNetwork timedScore : mScoredNetworkCache.values()) { 524 int speed = timedScore.getScore().calculateBadge(mRssi); 525 if (speed != Speed.NONE) { 526 count++; 527 totalSpeed += speed; 528 } 529 } 530 int speed = count == 0 ? Speed.NONE : totalSpeed / count; 531 if (WifiTracker.sVerboseLogging) { 532 Log.i(TAG, String.format("%s generated fallback speed is: %d", getSsidStr(), speed)); 533 } 534 return roundToClosestSpeedEnum(speed); 535 } 536 537 /** 538 * Updates the AccessPoint's metering based on {@link ScoredNetwork#meteredHint}, returning 539 * true if the metering changed. 540 */ 541 private boolean updateMetered(WifiNetworkScoreCache scoreCache) { 542 boolean oldMetering = mIsScoredNetworkMetered; 543 mIsScoredNetworkMetered = false; 544 545 if (isActive() && mInfo != null) { 546 NetworkKey key = new NetworkKey(new WifiKey( 547 AccessPoint.convertToQuotedString(ssid), mInfo.getBSSID())); 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 /** Updates {@link #mSeen} based on the scan result cache. */ 649 private void updateSeen() { 650 long seen = 0; 651 for (ScanResult result : mScanResultCache.values()) { 652 if (result.timestamp > seen) { 653 seen = result.timestamp; 654 } 655 } 656 657 // Only replace the previous value if we have a recent scan result to use 658 if (seen != 0) { 659 mSeen = seen; 660 } 661 } 662 663 /** 664 * Returns if the network should be considered metered. 665 */ 666 public boolean isMetered() { 667 return mIsScoredNetworkMetered 668 || WifiConfiguration.isMetered(mConfig, mInfo); 669 } 670 671 public NetworkInfo getNetworkInfo() { 672 return mNetworkInfo; 673 } 674 675 public int getSecurity() { 676 return security; 677 } 678 679 public String getSecurityString(boolean concise) { 680 Context context = mContext; 681 if (isPasspoint() || isPasspointConfig()) { 682 return concise ? context.getString(R.string.wifi_security_short_eap) : 683 context.getString(R.string.wifi_security_eap); 684 } 685 switch(security) { 686 case SECURITY_EAP: 687 return concise ? context.getString(R.string.wifi_security_short_eap) : 688 context.getString(R.string.wifi_security_eap); 689 case SECURITY_PSK: 690 switch (pskType) { 691 case PSK_WPA: 692 return concise ? context.getString(R.string.wifi_security_short_wpa) : 693 context.getString(R.string.wifi_security_wpa); 694 case PSK_WPA2: 695 return concise ? context.getString(R.string.wifi_security_short_wpa2) : 696 context.getString(R.string.wifi_security_wpa2); 697 case PSK_WPA_WPA2: 698 return concise ? context.getString(R.string.wifi_security_short_wpa_wpa2) : 699 context.getString(R.string.wifi_security_wpa_wpa2); 700 case PSK_UNKNOWN: 701 default: 702 return concise ? context.getString(R.string.wifi_security_short_psk_generic) 703 : context.getString(R.string.wifi_security_psk_generic); 704 } 705 case SECURITY_WEP: 706 return concise ? context.getString(R.string.wifi_security_short_wep) : 707 context.getString(R.string.wifi_security_wep); 708 case SECURITY_NONE: 709 default: 710 return concise ? "" : context.getString(R.string.wifi_security_none); 711 } 712 } 713 714 public String getSsidStr() { 715 return ssid; 716 } 717 718 public String getBssid() { 719 return bssid; 720 } 721 722 public CharSequence getSsid() { 723 final SpannableString str = new SpannableString(ssid); 724 str.setSpan(new TtsSpan.TelephoneBuilder(ssid).build(), 0, ssid.length(), 725 Spannable.SPAN_INCLUSIVE_INCLUSIVE); 726 return str; 727 } 728 729 public String getConfigName() { 730 if (mConfig != null && mConfig.isPasspoint()) { 731 return mConfig.providerFriendlyName; 732 } else if (mFqdn != null) { 733 return mProviderFriendlyName; 734 } else { 735 return ssid; 736 } 737 } 738 739 public DetailedState getDetailedState() { 740 if (mNetworkInfo != null) { 741 return mNetworkInfo.getDetailedState(); 742 } 743 Log.w(TAG, "NetworkInfo is null, cannot return detailed state"); 744 return null; 745 } 746 747 public boolean isCarrierAp() { 748 return mIsCarrierAp; 749 } 750 751 public int getCarrierApEapType() { 752 return mCarrierApEapType; 753 } 754 755 public String getCarrierName() { 756 return mCarrierName; 757 } 758 759 public String getSavedNetworkSummary() { 760 WifiConfiguration config = mConfig; 761 if (config != null) { 762 PackageManager pm = mContext.getPackageManager(); 763 String systemName = pm.getNameForUid(android.os.Process.SYSTEM_UID); 764 int userId = UserHandle.getUserId(config.creatorUid); 765 ApplicationInfo appInfo = null; 766 if (config.creatorName != null && config.creatorName.equals(systemName)) { 767 appInfo = mContext.getApplicationInfo(); 768 } else { 769 try { 770 IPackageManager ipm = AppGlobals.getPackageManager(); 771 appInfo = ipm.getApplicationInfo(config.creatorName, 0 /* flags */, userId); 772 } catch (RemoteException rex) { 773 } 774 } 775 if (appInfo != null && 776 !appInfo.packageName.equals(mContext.getString(R.string.settings_package)) && 777 !appInfo.packageName.equals( 778 mContext.getString(R.string.certinstaller_package))) { 779 return mContext.getString(R.string.saved_network, appInfo.loadLabel(pm)); 780 } 781 } 782 return ""; 783 } 784 785 public String getSummary() { 786 return getSettingsSummary(mConfig); 787 } 788 789 public String getSettingsSummary() { 790 return getSettingsSummary(mConfig); 791 } 792 793 private String getSettingsSummary(WifiConfiguration config) { 794 // Update to new summary 795 StringBuilder summary = new StringBuilder(); 796 797 if (isActive() && config != null && config.isPasspoint()) { 798 // This is the active connection on passpoint 799 summary.append(getSummary(mContext, getDetailedState(), 800 false, config.providerFriendlyName)); 801 } else if (isActive() && config != null && getDetailedState() == DetailedState.CONNECTED 802 && mIsCarrierAp) { 803 summary.append(String.format(mContext.getString(R.string.connected_via_carrier), mCarrierName)); 804 } else if (isActive()) { 805 // This is the active connection on non-passpoint network 806 summary.append(getSummary(mContext, getDetailedState(), 807 mInfo != null && mInfo.isEphemeral())); 808 } else if (config != null && config.isPasspoint() 809 && config.getNetworkSelectionStatus().isNetworkEnabled()) { 810 String format = mContext.getString(R.string.available_via_passpoint); 811 summary.append(String.format(format, config.providerFriendlyName)); 812 } else if (config != null && config.hasNoInternetAccess()) { 813 int messageID = config.getNetworkSelectionStatus().isNetworkPermanentlyDisabled() 814 ? R.string.wifi_no_internet_no_reconnect 815 : R.string.wifi_no_internet; 816 summary.append(mContext.getString(messageID)); 817 } else if (config != null && !config.getNetworkSelectionStatus().isNetworkEnabled()) { 818 WifiConfiguration.NetworkSelectionStatus networkStatus = 819 config.getNetworkSelectionStatus(); 820 switch (networkStatus.getNetworkSelectionDisableReason()) { 821 case WifiConfiguration.NetworkSelectionStatus.DISABLED_AUTHENTICATION_FAILURE: 822 summary.append(mContext.getString(R.string.wifi_disabled_password_failure)); 823 break; 824 case WifiConfiguration.NetworkSelectionStatus.DISABLED_BY_WRONG_PASSWORD: 825 summary.append(mContext.getString(R.string.wifi_check_password_try_again)); 826 break; 827 case WifiConfiguration.NetworkSelectionStatus.DISABLED_DHCP_FAILURE: 828 case WifiConfiguration.NetworkSelectionStatus.DISABLED_DNS_FAILURE: 829 summary.append(mContext.getString(R.string.wifi_disabled_network_failure)); 830 break; 831 case WifiConfiguration.NetworkSelectionStatus.DISABLED_ASSOCIATION_REJECTION: 832 summary.append(mContext.getString(R.string.wifi_disabled_generic)); 833 break; 834 } 835 } else if (config != null && config.getNetworkSelectionStatus().isNotRecommended()) { 836 summary.append(mContext.getString(R.string.wifi_disabled_by_recommendation_provider)); 837 } else if (mIsCarrierAp) { 838 summary.append(String.format(mContext.getString(R.string.available_via_carrier), mCarrierName)); 839 } else if (!isReachable()) { // Wifi out of range 840 summary.append(mContext.getString(R.string.wifi_not_in_range)); 841 } else { // In range, not disabled. 842 if (config != null) { // Is saved network 843 // Last attempt to connect to this failed. Show reason why 844 switch (config.recentFailure.getAssociationStatus()) { 845 case WifiConfiguration.RecentFailure.STATUS_AP_UNABLE_TO_HANDLE_NEW_STA: 846 summary.append(mContext.getString( 847 R.string.wifi_ap_unable_to_handle_new_sta)); 848 break; 849 default: 850 // "Saved" 851 summary.append(mContext.getString(R.string.wifi_remembered)); 852 break; 853 } 854 } 855 } 856 857 if (WifiTracker.sVerboseLogging) { 858 // Add RSSI/band information for this config, what was seen up to 6 seconds ago 859 // verbose WiFi Logging is only turned on thru developers settings 860 if (isActive() && mInfo != null) { 861 summary.append(" f=" + Integer.toString(mInfo.getFrequency())); 862 } 863 summary.append(" " + getVisibilityStatus()); 864 if (config != null && !config.getNetworkSelectionStatus().isNetworkEnabled()) { 865 summary.append(" (" + config.getNetworkSelectionStatus().getNetworkStatusString()); 866 if (config.getNetworkSelectionStatus().getDisableTime() > 0) { 867 long now = System.currentTimeMillis(); 868 long diff = (now - config.getNetworkSelectionStatus().getDisableTime()) / 1000; 869 long sec = diff%60; //seconds 870 long min = (diff/60)%60; //minutes 871 long hour = (min/60)%60; //hours 872 summary.append(", "); 873 if (hour > 0) summary.append(Long.toString(hour) + "h "); 874 summary.append( Long.toString(min) + "m "); 875 summary.append( Long.toString(sec) + "s "); 876 } 877 summary.append(")"); 878 } 879 880 if (config != null) { 881 WifiConfiguration.NetworkSelectionStatus networkStatus = 882 config.getNetworkSelectionStatus(); 883 for (int index = WifiConfiguration.NetworkSelectionStatus.NETWORK_SELECTION_ENABLE; 884 index < WifiConfiguration.NetworkSelectionStatus 885 .NETWORK_SELECTION_DISABLED_MAX; index++) { 886 if (networkStatus.getDisableReasonCounter(index) != 0) { 887 summary.append(" " + WifiConfiguration.NetworkSelectionStatus 888 .getNetworkDisableReasonString(index) + "=" 889 + networkStatus.getDisableReasonCounter(index)); 890 } 891 } 892 } 893 } 894 895 // If Speed label and summary are both present, use the preference combination to combine 896 // the two, else return the non-null one. 897 if (getSpeedLabel() != null && summary.length() != 0) { 898 return mContext.getResources().getString( 899 R.string.preference_summary_default_combination, 900 getSpeedLabel(), 901 summary.toString()); 902 } else if (getSpeedLabel() != null) { 903 return getSpeedLabel(); 904 } else { 905 return summary.toString(); 906 } 907 } 908 909 /** 910 * Returns the visibility status of the WifiConfiguration. 911 * 912 * @return autojoin debugging information 913 * TODO: use a string formatter 914 * ["rssi 5Ghz", "num results on 5GHz" / "rssi 5Ghz", "num results on 5GHz"] 915 * For instance [-40,5/-30,2] 916 */ 917 private String getVisibilityStatus() { 918 StringBuilder visibility = new StringBuilder(); 919 StringBuilder scans24GHz = new StringBuilder(); 920 StringBuilder scans5GHz = new StringBuilder(); 921 String bssid = null; 922 923 long now = System.currentTimeMillis(); 924 925 if (isActive() && mInfo != null) { 926 bssid = mInfo.getBSSID(); 927 if (bssid != null) { 928 visibility.append(" ").append(bssid); 929 } 930 visibility.append(" rssi=").append(mInfo.getRssi()); 931 visibility.append(" "); 932 visibility.append(" score=").append(mInfo.score); 933 if (mSpeed != Speed.NONE) { 934 visibility.append(" speed=").append(getSpeedLabel()); 935 } 936 visibility.append(String.format(" tx=%.1f,", mInfo.txSuccessRate)); 937 visibility.append(String.format("%.1f,", mInfo.txRetriesRate)); 938 visibility.append(String.format("%.1f ", mInfo.txBadRate)); 939 visibility.append(String.format("rx=%.1f", mInfo.rxSuccessRate)); 940 } 941 942 int maxRssi5 = WifiConfiguration.INVALID_RSSI; 943 int maxRssi24 = WifiConfiguration.INVALID_RSSI; 944 final int maxDisplayedScans = 4; 945 int num5 = 0; // number of scanned BSSID on 5GHz band 946 int num24 = 0; // number of scanned BSSID on 2.4Ghz band 947 int numBlackListed = 0; 948 evictOldScanResults(); 949 950 // TODO: sort list by RSSI or age 951 for (ScanResult result : mScanResultCache.values()) { 952 if (result.frequency >= LOWER_FREQ_5GHZ 953 && result.frequency <= HIGHER_FREQ_5GHZ) { 954 // Strictly speaking: [4915, 5825] 955 num5++; 956 957 if (result.level > maxRssi5) { 958 maxRssi5 = result.level; 959 } 960 if (num5 <= maxDisplayedScans) { 961 scans5GHz.append(verboseScanResultSummary(result, bssid)); 962 } 963 } else if (result.frequency >= LOWER_FREQ_24GHZ 964 && result.frequency <= HIGHER_FREQ_24GHZ) { 965 // Strictly speaking: [2412, 2482] 966 num24++; 967 968 if (result.level > maxRssi24) { 969 maxRssi24 = result.level; 970 } 971 if (num24 <= maxDisplayedScans) { 972 scans24GHz.append(verboseScanResultSummary(result, bssid)); 973 } 974 } 975 } 976 visibility.append(" ["); 977 if (num24 > 0) { 978 visibility.append("(").append(num24).append(")"); 979 if (num24 > maxDisplayedScans) { 980 visibility.append("max=").append(maxRssi24).append(","); 981 } 982 visibility.append(scans24GHz.toString()); 983 } 984 visibility.append(";"); 985 if (num5 > 0) { 986 visibility.append("(").append(num5).append(")"); 987 if (num5 > maxDisplayedScans) { 988 visibility.append("max=").append(maxRssi5).append(","); 989 } 990 visibility.append(scans5GHz.toString()); 991 } 992 if (numBlackListed > 0) 993 visibility.append("!").append(numBlackListed); 994 visibility.append("]"); 995 996 return visibility.toString(); 997 } 998 999 @VisibleForTesting 1000 /* package */ String verboseScanResultSummary(ScanResult result, String bssid) { 1001 StringBuilder stringBuilder = new StringBuilder(); 1002 stringBuilder.append(" \n{").append(result.BSSID); 1003 if (result.BSSID.equals(bssid)) { 1004 stringBuilder.append("*"); 1005 } 1006 stringBuilder.append("=").append(result.frequency); 1007 stringBuilder.append(",").append(result.level); 1008 int speed = getSpecificApSpeed(result); 1009 if (speed != Speed.NONE) { 1010 stringBuilder.append(",") 1011 .append(getSpeedLabel(speed)); 1012 } 1013 stringBuilder.append("}"); 1014 return stringBuilder.toString(); 1015 } 1016 1017 @Speed private int getSpecificApSpeed(ScanResult result) { 1018 TimestampedScoredNetwork timedScore = mScoredNetworkCache.get(result.BSSID); 1019 if (timedScore == null) { 1020 return Speed.NONE; 1021 } 1022 // For debugging purposes we may want to use mRssi rather than result.level as the average 1023 // speed wil be determined by mRssi 1024 return timedScore.getScore().calculateBadge(result.level); 1025 } 1026 1027 /** 1028 * Return whether this is the active connection. 1029 * For ephemeral connections (networkId is invalid), this returns false if the network is 1030 * disconnected. 1031 */ 1032 public boolean isActive() { 1033 return mNetworkInfo != null && 1034 (networkId != WifiConfiguration.INVALID_NETWORK_ID || 1035 mNetworkInfo.getState() != State.DISCONNECTED); 1036 } 1037 1038 public boolean isConnectable() { 1039 return getLevel() != -1 && getDetailedState() == null; 1040 } 1041 1042 public boolean isEphemeral() { 1043 return mInfo != null && mInfo.isEphemeral() && 1044 mNetworkInfo != null && mNetworkInfo.getState() != State.DISCONNECTED; 1045 } 1046 1047 /** 1048 * Return true if this AccessPoint represents a Passpoint AP. 1049 */ 1050 public boolean isPasspoint() { 1051 return mConfig != null && mConfig.isPasspoint(); 1052 } 1053 1054 /** 1055 * Return true if this AccessPoint represents a Passpoint provider configuration. 1056 */ 1057 public boolean isPasspointConfig() { 1058 return mFqdn != null; 1059 } 1060 1061 /** 1062 * Return whether the given {@link WifiInfo} is for this access point. 1063 * If the current AP does not have a network Id then the config is used to 1064 * match based on SSID and security. 1065 */ 1066 private boolean isInfoForThisAccessPoint(WifiConfiguration config, WifiInfo info) { 1067 if (isPasspoint() == false && networkId != WifiConfiguration.INVALID_NETWORK_ID) { 1068 return networkId == info.getNetworkId(); 1069 } else if (config != null) { 1070 return matches(config); 1071 } 1072 else { 1073 // Might be an ephemeral connection with no WifiConfiguration. Try matching on SSID. 1074 // (Note that we only do this if the WifiConfiguration explicitly equals INVALID). 1075 // TODO: Handle hex string SSIDs. 1076 return ssid.equals(removeDoubleQuotes(info.getSSID())); 1077 } 1078 } 1079 1080 public boolean isSaved() { 1081 return networkId != WifiConfiguration.INVALID_NETWORK_ID; 1082 } 1083 1084 public Object getTag() { 1085 return mTag; 1086 } 1087 1088 public void setTag(Object tag) { 1089 mTag = tag; 1090 } 1091 1092 /** 1093 * Generate and save a default wifiConfiguration with common values. 1094 * Can only be called for unsecured networks. 1095 */ 1096 public void generateOpenNetworkConfig() { 1097 if (security != SECURITY_NONE) 1098 throw new IllegalStateException(); 1099 if (mConfig != null) 1100 return; 1101 mConfig = new WifiConfiguration(); 1102 mConfig.SSID = AccessPoint.convertToQuotedString(ssid); 1103 mConfig.allowedKeyManagement.set(KeyMgmt.NONE); 1104 } 1105 1106 void loadConfig(WifiConfiguration config) { 1107 ssid = (config.SSID == null ? "" : removeDoubleQuotes(config.SSID)); 1108 bssid = config.BSSID; 1109 security = getSecurity(config); 1110 networkId = config.networkId; 1111 mConfig = config; 1112 } 1113 1114 private void initWithScanResult(ScanResult result) { 1115 ssid = result.SSID; 1116 bssid = result.BSSID; 1117 security = getSecurity(result); 1118 if (security == SECURITY_PSK) 1119 pskType = getPskType(result); 1120 1121 mScanResultCache.put(result.BSSID, result); 1122 updateRssi(); 1123 mSeen = result.timestamp; // even if the timestamp is old it is still valid 1124 mIsCarrierAp = result.isCarrierAp; 1125 mCarrierApEapType = result.carrierApEapType; 1126 mCarrierName = result.carrierName; 1127 } 1128 1129 public void saveWifiState(Bundle savedState) { 1130 if (ssid != null) savedState.putString(KEY_SSID, getSsidStr()); 1131 savedState.putInt(KEY_SECURITY, security); 1132 savedState.putInt(KEY_SPEED, mSpeed); 1133 savedState.putInt(KEY_PSKTYPE, pskType); 1134 if (mConfig != null) savedState.putParcelable(KEY_CONFIG, mConfig); 1135 savedState.putParcelable(KEY_WIFIINFO, mInfo); 1136 evictOldScanResults(); 1137 savedState.putParcelableArrayList(KEY_SCANRESULTCACHE, 1138 new ArrayList<ScanResult>(mScanResultCache.values())); 1139 savedState.putParcelableArrayList(KEY_SCOREDNETWORKCACHE, 1140 new ArrayList<>(mScoredNetworkCache.values())); 1141 if (mNetworkInfo != null) { 1142 savedState.putParcelable(KEY_NETWORKINFO, mNetworkInfo); 1143 } 1144 if (mFqdn != null) { 1145 savedState.putString(KEY_FQDN, mFqdn); 1146 } 1147 if (mProviderFriendlyName != null) { 1148 savedState.putString(KEY_PROVIDER_FRIENDLY_NAME, mProviderFriendlyName); 1149 } 1150 savedState.putBoolean(KEY_IS_CARRIER_AP, mIsCarrierAp); 1151 savedState.putInt(KEY_CARRIER_AP_EAP_TYPE, mCarrierApEapType); 1152 savedState.putString(KEY_CARRIER_NAME, mCarrierName); 1153 } 1154 1155 public void setListener(AccessPointListener listener) { 1156 mAccessPointListener = listener; 1157 } 1158 1159 /** 1160 * Update the AP with the given scan result. 1161 * 1162 * @param result the ScanResult to add to the AccessPoint scan cache 1163 * @param evictOldScanResults whether stale scan results should be removed 1164 * from the cache during this update process 1165 * @return true if the scan result update caused a change in state which would impact ranking 1166 * or AccessPoint rendering (e.g. wifi level, security) 1167 */ 1168 boolean update(ScanResult result, boolean evictOldScanResults) { 1169 if (matches(result)) { 1170 int oldLevel = getLevel(); 1171 1172 /* Add or update the scan result for the BSSID */ 1173 mScanResultCache.put(result.BSSID, result); 1174 if (evictOldScanResults) evictOldScanResults(); 1175 updateSeen(); 1176 updateRssi(); 1177 int newLevel = getLevel(); 1178 1179 if (newLevel > 0 && newLevel != oldLevel) { 1180 // Only update labels on visible rssi changes 1181 updateSpeed(); 1182 if (mAccessPointListener != null) { 1183 mAccessPointListener.onLevelChanged(this); 1184 } 1185 } 1186 // This flag only comes from scans, is not easily saved in config 1187 if (security == SECURITY_PSK) { 1188 pskType = getPskType(result); 1189 } 1190 1191 if (mAccessPointListener != null) { 1192 mAccessPointListener.onAccessPointChanged(this); 1193 } 1194 1195 // The carrier info in the ScanResult is set by the platform based on the SSID and will 1196 // always be the same for all matching scan results. 1197 mIsCarrierAp = result.isCarrierAp; 1198 mCarrierApEapType = result.carrierApEapType; 1199 mCarrierName = result.carrierName; 1200 1201 return true; 1202 } 1203 return false; 1204 } 1205 1206 /** Attempt to update the AccessPoint and return true if an update occurred. */ 1207 public boolean update( 1208 @Nullable WifiConfiguration config, WifiInfo info, NetworkInfo networkInfo) { 1209 boolean updated = false; 1210 final int oldLevel = getLevel(); 1211 if (info != null && isInfoForThisAccessPoint(config, info)) { 1212 updated = (mInfo == null); 1213 if (mConfig != config) { 1214 // We do not set updated = true as we do not want to increase the amount of sorting 1215 // and copying performed in WifiTracker at this time. If issues involving refresh 1216 // are still seen, we will investigate further. 1217 update(config); // Notifies the AccessPointListener of the change 1218 } 1219 if (mRssi != info.getRssi() && info.getRssi() != WifiInfo.INVALID_RSSI) { 1220 mRssi = info.getRssi(); 1221 updated = true; 1222 } else if (mNetworkInfo != null && networkInfo != null 1223 && mNetworkInfo.getDetailedState() != networkInfo.getDetailedState()) { 1224 updated = true; 1225 } 1226 mInfo = info; 1227 mNetworkInfo = networkInfo; 1228 } else if (mInfo != null) { 1229 updated = true; 1230 mInfo = null; 1231 mNetworkInfo = null; 1232 } 1233 if (updated && mAccessPointListener != null) { 1234 mAccessPointListener.onAccessPointChanged(this); 1235 1236 if (oldLevel != getLevel() /* current level */) { 1237 mAccessPointListener.onLevelChanged(this); 1238 } 1239 } 1240 return updated; 1241 } 1242 1243 void update(@Nullable WifiConfiguration config) { 1244 mConfig = config; 1245 networkId = config != null ? config.networkId : WifiConfiguration.INVALID_NETWORK_ID; 1246 if (mAccessPointListener != null) { 1247 mAccessPointListener.onAccessPointChanged(this); 1248 } 1249 } 1250 1251 @VisibleForTesting 1252 void setRssi(int rssi) { 1253 mRssi = rssi; 1254 } 1255 1256 /** Sets the rssi to {@link #UNREACHABLE_RSSI}. */ 1257 void setUnreachable() { 1258 setRssi(AccessPoint.UNREACHABLE_RSSI); 1259 } 1260 1261 int getSpeed() { return mSpeed;} 1262 1263 @Nullable 1264 String getSpeedLabel() { 1265 return getSpeedLabel(mSpeed); 1266 } 1267 1268 @Nullable 1269 @Speed 1270 private int roundToClosestSpeedEnum(int speed) { 1271 if (speed < Speed.SLOW) { 1272 return Speed.NONE; 1273 } else if (speed < (Speed.SLOW + Speed.MODERATE) / 2) { 1274 return Speed.SLOW; 1275 } else if (speed < (Speed.MODERATE + Speed.FAST) / 2) { 1276 return Speed.MODERATE; 1277 } else if (speed < (Speed.FAST + Speed.VERY_FAST) / 2) { 1278 return Speed.FAST; 1279 } else { 1280 return Speed.VERY_FAST; 1281 } 1282 } 1283 1284 @Nullable 1285 private String getSpeedLabel(@Speed int speed) { 1286 switch (speed) { 1287 case Speed.VERY_FAST: 1288 return mContext.getString(R.string.speed_label_very_fast); 1289 case Speed.FAST: 1290 return mContext.getString(R.string.speed_label_fast); 1291 case Speed.MODERATE: 1292 return mContext.getString(R.string.speed_label_okay); 1293 case Speed.SLOW: 1294 return mContext.getString(R.string.speed_label_slow); 1295 case Speed.NONE: 1296 default: 1297 return null; 1298 } 1299 } 1300 1301 /** Return true if the current RSSI is reachable, and false otherwise. */ 1302 public boolean isReachable() { 1303 return mRssi != UNREACHABLE_RSSI; 1304 } 1305 1306 public static String getSummary(Context context, String ssid, DetailedState state, 1307 boolean isEphemeral, String passpointProvider) { 1308 if (state == DetailedState.CONNECTED && ssid == null) { 1309 if (TextUtils.isEmpty(passpointProvider) == false) { 1310 // Special case for connected + passpoint networks. 1311 String format = context.getString(R.string.connected_via_passpoint); 1312 return String.format(format, passpointProvider); 1313 } else if (isEphemeral) { 1314 // Special case for connected + ephemeral networks. 1315 final NetworkScoreManager networkScoreManager = context.getSystemService( 1316 NetworkScoreManager.class); 1317 NetworkScorerAppData scorer = networkScoreManager.getActiveScorer(); 1318 if (scorer != null && scorer.getRecommendationServiceLabel() != null) { 1319 String format = context.getString(R.string.connected_via_network_scorer); 1320 return String.format(format, scorer.getRecommendationServiceLabel()); 1321 } else { 1322 return context.getString(R.string.connected_via_network_scorer_default); 1323 } 1324 } 1325 } 1326 1327 // Case when there is wifi connected without internet connectivity. 1328 final ConnectivityManager cm = (ConnectivityManager) 1329 context.getSystemService(Context.CONNECTIVITY_SERVICE); 1330 if (state == DetailedState.CONNECTED) { 1331 IWifiManager wifiManager = IWifiManager.Stub.asInterface( 1332 ServiceManager.getService(Context.WIFI_SERVICE)); 1333 NetworkCapabilities nc = null; 1334 1335 try { 1336 nc = cm.getNetworkCapabilities(wifiManager.getCurrentNetwork()); 1337 } catch (RemoteException e) {} 1338 1339 if (nc != null) { 1340 if (nc.hasCapability(nc.NET_CAPABILITY_CAPTIVE_PORTAL)) { 1341 int id = context.getResources() 1342 .getIdentifier("network_available_sign_in", "string", "android"); 1343 return context.getString(id); 1344 } else if (!nc.hasCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED)) { 1345 return context.getString(R.string.wifi_connected_no_internet); 1346 } 1347 } 1348 } 1349 if (state == null) { 1350 Log.w(TAG, "state is null, returning empty summary"); 1351 return ""; 1352 } 1353 String[] formats = context.getResources().getStringArray((ssid == null) 1354 ? R.array.wifi_status : R.array.wifi_status_with_ssid); 1355 int index = state.ordinal(); 1356 1357 if (index >= formats.length || formats[index].length() == 0) { 1358 return ""; 1359 } 1360 return String.format(formats[index], ssid); 1361 } 1362 1363 public static String getSummary(Context context, DetailedState state, boolean isEphemeral) { 1364 return getSummary(context, null, state, isEphemeral, null); 1365 } 1366 1367 public static String getSummary(Context context, DetailedState state, boolean isEphemeral, 1368 String passpointProvider) { 1369 return getSummary(context, null, state, isEphemeral, passpointProvider); 1370 } 1371 1372 public static String convertToQuotedString(String string) { 1373 return "\"" + string + "\""; 1374 } 1375 1376 private static int getPskType(ScanResult result) { 1377 boolean wpa = result.capabilities.contains("WPA-PSK"); 1378 boolean wpa2 = result.capabilities.contains("WPA2-PSK"); 1379 if (wpa2 && wpa) { 1380 return PSK_WPA_WPA2; 1381 } else if (wpa2) { 1382 return PSK_WPA2; 1383 } else if (wpa) { 1384 return PSK_WPA; 1385 } else { 1386 Log.w(TAG, "Received abnormal flag string: " + result.capabilities); 1387 return PSK_UNKNOWN; 1388 } 1389 } 1390 1391 private static int getSecurity(ScanResult result) { 1392 if (result.capabilities.contains("WEP")) { 1393 return SECURITY_WEP; 1394 } else if (result.capabilities.contains("PSK")) { 1395 return SECURITY_PSK; 1396 } else if (result.capabilities.contains("EAP")) { 1397 return SECURITY_EAP; 1398 } 1399 return SECURITY_NONE; 1400 } 1401 1402 static int getSecurity(WifiConfiguration config) { 1403 if (config.allowedKeyManagement.get(KeyMgmt.WPA_PSK)) { 1404 return SECURITY_PSK; 1405 } 1406 if (config.allowedKeyManagement.get(KeyMgmt.WPA_EAP) || 1407 config.allowedKeyManagement.get(KeyMgmt.IEEE8021X)) { 1408 return SECURITY_EAP; 1409 } 1410 return (config.wepKeys[0] != null) ? SECURITY_WEP : SECURITY_NONE; 1411 } 1412 1413 public static String securityToString(int security, int pskType) { 1414 if (security == SECURITY_WEP) { 1415 return "WEP"; 1416 } else if (security == SECURITY_PSK) { 1417 if (pskType == PSK_WPA) { 1418 return "WPA"; 1419 } else if (pskType == PSK_WPA2) { 1420 return "WPA2"; 1421 } else if (pskType == PSK_WPA_WPA2) { 1422 return "WPA_WPA2"; 1423 } 1424 return "PSK"; 1425 } else if (security == SECURITY_EAP) { 1426 return "EAP"; 1427 } 1428 return "NONE"; 1429 } 1430 1431 static String removeDoubleQuotes(String string) { 1432 if (TextUtils.isEmpty(string)) { 1433 return ""; 1434 } 1435 int length = string.length(); 1436 if ((length > 1) && (string.charAt(0) == '"') 1437 && (string.charAt(length - 1) == '"')) { 1438 return string.substring(1, length - 1); 1439 } 1440 return string; 1441 } 1442 1443 public interface AccessPointListener { 1444 void onAccessPointChanged(AccessPoint accessPoint); 1445 void onLevelChanged(AccessPoint accessPoint); 1446 } 1447} 1448