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 17 package com.android.settingslib.wifi; 18 19 import android.annotation.IntDef; 20 import android.annotation.Nullable; 21 import android.app.AppGlobals; 22 import android.content.Context; 23 import android.content.pm.ApplicationInfo; 24 import android.content.pm.IPackageManager; 25 import android.content.pm.PackageManager; 26 import android.net.ConnectivityManager; 27 import android.net.NetworkCapabilities; 28 import android.net.NetworkInfo; 29 import android.net.NetworkInfo.DetailedState; 30 import android.net.NetworkInfo.State; 31 import android.net.NetworkKey; 32 import android.net.NetworkScoreManager; 33 import android.net.NetworkScorerAppData; 34 import android.net.ScoredNetwork; 35 import android.net.WifiKey; 36 import android.net.wifi.IWifiManager; 37 import android.net.wifi.ScanResult; 38 import android.net.wifi.WifiConfiguration; 39 import android.net.wifi.WifiConfiguration.KeyMgmt; 40 import android.net.wifi.WifiEnterpriseConfig; 41 import android.net.wifi.WifiInfo; 42 import android.net.wifi.WifiManager; 43 import android.net.wifi.WifiNetworkScoreCache; 44 import android.net.wifi.hotspot2.PasspointConfiguration; 45 import android.os.Bundle; 46 import android.os.RemoteException; 47 import android.os.ServiceManager; 48 import android.os.SystemClock; 49 import android.os.UserHandle; 50 import android.support.annotation.NonNull; 51 import android.text.Spannable; 52 import android.text.SpannableString; 53 import android.text.TextUtils; 54 import android.text.style.TtsSpan; 55 import android.util.Log; 56 57 import com.android.internal.annotations.VisibleForTesting; 58 import com.android.settingslib.R; 59 60 import java.lang.annotation.Retention; 61 import java.lang.annotation.RetentionPolicy; 62 import java.util.ArrayList; 63 import java.util.HashMap; 64 import java.util.Iterator; 65 import java.util.Map; 66 import java.util.concurrent.ConcurrentHashMap; 67 import java.util.concurrent.atomic.AtomicInteger; 68 69 70 public class AccessPoint implements Comparable<AccessPoint> { 71 static final String TAG = "SettingsLib.AccessPoint"; 72 73 /** 74 * Lower bound on the 2.4 GHz (802.11b/g/n) WLAN channels 75 */ 76 public static final int LOWER_FREQ_24GHZ = 2400; 77 78 /** 79 * Upper bound on the 2.4 GHz (802.11b/g/n) WLAN channels 80 */ 81 public static final int HIGHER_FREQ_24GHZ = 2500; 82 83 /** 84 * Lower bound on the 5.0 GHz (802.11a/h/j/n/ac) WLAN channels 85 */ 86 public static final int LOWER_FREQ_5GHZ = 4900; 87 88 /** 89 * Upper bound on the 5.0 GHz (802.11a/h/j/n/ac) WLAN channels 90 */ 91 public static final int HIGHER_FREQ_5GHZ = 5900; 92 93 @IntDef({Speed.NONE, Speed.SLOW, Speed.MODERATE, Speed.FAST, Speed.VERY_FAST}) 94 @Retention(RetentionPolicy.SOURCE) 95 public @interface Speed { 96 /** 97 * Constant value representing an unlabeled / unscored network. 98 */ 99 int NONE = 0; 100 /** 101 * Constant value representing a slow speed network connection. 102 */ 103 int SLOW = 5; 104 /** 105 * Constant value representing a medium speed network connection. 106 */ 107 int MODERATE = 10; 108 /** 109 * Constant value representing a fast speed network connection. 110 */ 111 int FAST = 20; 112 /** 113 * Constant value representing a very fast speed network connection. 114 */ 115 int VERY_FAST = 30; 116 } 117 118 /** 119 * Experimental: we should be able to show the user the list of BSSIDs and bands 120 * for that SSID. 121 * For now this data is used only with Verbose Logging so as to show the band and number 122 * of BSSIDs on which that network is seen. 123 */ 124 private final ConcurrentHashMap<String, ScanResult> mScanResultCache = 125 new ConcurrentHashMap<String, ScanResult>(32); 126 127 /** 128 * Map of BSSIDs to scored networks for individual bssids. 129 * 130 * <p>This cache should not be evicted with scan results, as the values here are used to 131 * generate a fallback in the absence of scores for the visible APs. 132 */ 133 private final Map<String, TimestampedScoredNetwork> mScoredNetworkCache = new HashMap<>(); 134 135 /** Maximum age of scan results to hold onto while actively scanning. **/ 136 private static final long MAX_SCAN_RESULT_AGE_MILLIS = 25000; 137 138 static final String KEY_NETWORKINFO = "key_networkinfo"; 139 static final String KEY_WIFIINFO = "key_wifiinfo"; 140 static final String KEY_SCANRESULT = "key_scanresult"; 141 static final String KEY_SSID = "key_ssid"; 142 static final String KEY_SECURITY = "key_security"; 143 static final String KEY_SPEED = "key_speed"; 144 static final String KEY_PSKTYPE = "key_psktype"; 145 static final String KEY_SCANRESULTCACHE = "key_scanresultcache"; 146 static final String KEY_SCOREDNETWORKCACHE = "key_scorednetworkcache"; 147 static final String KEY_CONFIG = "key_config"; 148 static final String KEY_FQDN = "key_fqdn"; 149 static final String KEY_PROVIDER_FRIENDLY_NAME = "key_provider_friendly_name"; 150 static final String KEY_IS_CARRIER_AP = "key_is_carrier_ap"; 151 static final String KEY_CARRIER_AP_EAP_TYPE = "key_carrier_ap_eap_type"; 152 static final String KEY_CARRIER_NAME = "key_carrier_name"; 153 static final AtomicInteger sLastId = new AtomicInteger(0); 154 155 /** 156 * These values are matched in string arrays -- changes must be kept in sync 157 */ 158 public static final int SECURITY_NONE = 0; 159 public static final int SECURITY_WEP = 1; 160 public static final int SECURITY_PSK = 2; 161 public static final int SECURITY_EAP = 3; 162 163 private static final int PSK_UNKNOWN = 0; 164 private static final int PSK_WPA = 1; 165 private static final int PSK_WPA2 = 2; 166 private static final int PSK_WPA_WPA2 = 3; 167 168 /** 169 * The number of distinct wifi levels. 170 * 171 * <p>Must keep in sync with {@link R.array.wifi_signal} and {@link WifiManager#RSSI_LEVELS}. 172 */ 173 public static final int SIGNAL_LEVELS = 5; 174 175 public static final int UNREACHABLE_RSSI = Integer.MIN_VALUE; 176 177 private final Context mContext; 178 179 private String ssid; 180 private String bssid; 181 private int security; 182 private int networkId = WifiConfiguration.INVALID_NETWORK_ID; 183 184 private int pskType = PSK_UNKNOWN; 185 186 private WifiConfiguration mConfig; 187 188 private int mRssi = UNREACHABLE_RSSI; 189 private long mSeen = 0; 190 191 private WifiInfo mInfo; 192 private NetworkInfo mNetworkInfo; 193 AccessPointListener mAccessPointListener; 194 195 private Object mTag; 196 197 @Speed private int mSpeed = Speed.NONE; 198 private boolean mIsScoredNetworkMetered = false; 199 200 // used to co-relate internal vs returned accesspoint. 201 int mId; 202 203 /** 204 * Information associated with the {@link PasspointConfiguration}. Only maintaining 205 * the relevant info to preserve spaces. 206 */ 207 private String mFqdn; 208 private String mProviderFriendlyName; 209 210 private boolean mIsCarrierAp = false; 211 /** 212 * The EAP type {@link WifiEnterpriseConfig.Eap} associated with this AP if it is a carrier AP. 213 */ 214 private int mCarrierApEapType = WifiEnterpriseConfig.Eap.NONE; 215 private String mCarrierName = null; 216 217 public AccessPoint(Context context, Bundle savedState) { 218 mContext = context; 219 mConfig = savedState.getParcelable(KEY_CONFIG); 220 if (mConfig != null) { 221 loadConfig(mConfig); 222 } 223 if (savedState.containsKey(KEY_SSID)) { 224 ssid = savedState.getString(KEY_SSID); 225 } 226 if (savedState.containsKey(KEY_SECURITY)) { 227 security = savedState.getInt(KEY_SECURITY); 228 } 229 if (savedState.containsKey(KEY_SPEED)) { 230 mSpeed = savedState.getInt(KEY_SPEED); 231 } 232 if (savedState.containsKey(KEY_PSKTYPE)) { 233 pskType = savedState.getInt(KEY_PSKTYPE); 234 } 235 mInfo = savedState.getParcelable(KEY_WIFIINFO); 236 if (savedState.containsKey(KEY_NETWORKINFO)) { 237 mNetworkInfo = savedState.getParcelable(KEY_NETWORKINFO); 238 } 239 if (savedState.containsKey(KEY_SCANRESULTCACHE)) { 240 ArrayList<ScanResult> scanResultArrayList = 241 savedState.getParcelableArrayList(KEY_SCANRESULTCACHE); 242 mScanResultCache.clear(); 243 for (ScanResult result : scanResultArrayList) { 244 mScanResultCache.put(result.BSSID, result); 245 } 246 } 247 if (savedState.containsKey(KEY_SCOREDNETWORKCACHE)) { 248 ArrayList<TimestampedScoredNetwork> scoredNetworkArrayList = 249 savedState.getParcelableArrayList(KEY_SCOREDNETWORKCACHE); 250 for (TimestampedScoredNetwork timedScore : scoredNetworkArrayList) { 251 mScoredNetworkCache.put(timedScore.getScore().networkKey.wifiKey.bssid, timedScore); 252 } 253 } 254 if (savedState.containsKey(KEY_FQDN)) { 255 mFqdn = savedState.getString(KEY_FQDN); 256 } 257 if (savedState.containsKey(KEY_PROVIDER_FRIENDLY_NAME)) { 258 mProviderFriendlyName = savedState.getString(KEY_PROVIDER_FRIENDLY_NAME); 259 } 260 if (savedState.containsKey(KEY_IS_CARRIER_AP)) { 261 mIsCarrierAp = savedState.getBoolean(KEY_IS_CARRIER_AP); 262 } 263 if (savedState.containsKey(KEY_CARRIER_AP_EAP_TYPE)) { 264 mCarrierApEapType = savedState.getInt(KEY_CARRIER_AP_EAP_TYPE); 265 } 266 if (savedState.containsKey(KEY_CARRIER_NAME)) { 267 mCarrierName = savedState.getString(KEY_CARRIER_NAME); 268 } 269 update(mConfig, mInfo, mNetworkInfo); 270 271 // Do not evict old scan results on initial creation 272 updateRssi(); 273 updateSeen(); 274 mId = sLastId.incrementAndGet(); 275 } 276 277 public AccessPoint(Context context, WifiConfiguration config) { 278 mContext = context; 279 loadConfig(config); 280 mId = sLastId.incrementAndGet(); 281 } 282 283 /** 284 * Initialize an AccessPoint object for a {@link PasspointConfiguration}. This is mainly 285 * used by "Saved Networks" page for managing the saved {@link PasspointConfiguration}. 286 */ 287 public AccessPoint(Context context, PasspointConfiguration config) { 288 mContext = context; 289 mFqdn = config.getHomeSp().getFqdn(); 290 mProviderFriendlyName = config.getHomeSp().getFriendlyName(); 291 mId = sLastId.incrementAndGet(); 292 } 293 294 AccessPoint(Context context, AccessPoint other) { 295 mContext = context; 296 copyFrom(other); 297 } 298 299 AccessPoint(Context context, ScanResult result) { 300 mContext = context; 301 initWithScanResult(result); 302 mId = sLastId.incrementAndGet(); 303 } 304 305 /** 306 * Copy accesspoint information. NOTE: We do not copy tag information because that is never 307 * set on the internal copy. 308 * @param that 309 */ 310 void copyFrom(AccessPoint that) { 311 that.evictOldScanResults(); 312 this.ssid = that.ssid; 313 this.bssid = that.bssid; 314 this.security = that.security; 315 this.networkId = that.networkId; 316 this.pskType = that.pskType; 317 this.mConfig = that.mConfig; //TODO: Watch out, this object is mutated. 318 this.mRssi = that.mRssi; 319 this.mSeen = that.mSeen; 320 this.mInfo = that.mInfo; 321 this.mNetworkInfo = that.mNetworkInfo; 322 this.mScanResultCache.clear(); 323 this.mScanResultCache.putAll(that.mScanResultCache); 324 this.mScoredNetworkCache.clear(); 325 this.mScoredNetworkCache.putAll(that.mScoredNetworkCache); 326 this.mId = that.mId; 327 this.mSpeed = that.mSpeed; 328 this.mIsScoredNetworkMetered = that.mIsScoredNetworkMetered; 329 this.mIsCarrierAp = that.mIsCarrierAp; 330 this.mCarrierApEapType = that.mCarrierApEapType; 331 this.mCarrierName = that.mCarrierName; 332 } 333 334 /** 335 * Returns a negative integer, zero, or a positive integer if this AccessPoint is less than, 336 * equal to, or greater than the other AccessPoint. 337 * 338 * Sort order rules for AccessPoints: 339 * 1. Active before inactive 340 * 2. Reachable before unreachable 341 * 3. Saved before unsaved 342 * 4. Network speed value 343 * 5. Stronger signal before weaker signal 344 * 6. SSID alphabetically 345 * 346 * Note that AccessPoints with a signal are usually also Reachable, 347 * and will thus appear before unreachable saved AccessPoints. 348 */ 349 @Override 350 public int compareTo(@NonNull AccessPoint other) { 351 // Active one goes first. 352 if (isActive() && !other.isActive()) return -1; 353 if (!isActive() && other.isActive()) return 1; 354 355 // Reachable one goes before unreachable one. 356 if (isReachable() && !other.isReachable()) return -1; 357 if (!isReachable() && other.isReachable()) return 1; 358 359 // Configured (saved) one goes before unconfigured one. 360 if (isSaved() && !other.isSaved()) return -1; 361 if (!isSaved() && other.isSaved()) return 1; 362 363 // Faster speeds go before slower speeds - but only if visible change in speed label 364 if (getSpeed() != other.getSpeed()) { 365 return other.getSpeed() - getSpeed(); 366 } 367 368 // Sort by signal strength, bucketed by level 369 int difference = WifiManager.calculateSignalLevel(other.mRssi, SIGNAL_LEVELS) 370 - WifiManager.calculateSignalLevel(mRssi, SIGNAL_LEVELS); 371 if (difference != 0) { 372 return difference; 373 } 374 375 // Sort by ssid. 376 difference = getSsidStr().compareToIgnoreCase(other.getSsidStr()); 377 if (difference != 0) { 378 return difference; 379 } 380 381 // Do a case sensitive comparison to distinguish SSIDs that differ in case only 382 return getSsidStr().compareTo(other.getSsidStr()); 383 } 384 385 @Override 386 public boolean equals(Object other) { 387 if (!(other instanceof AccessPoint)) return false; 388 return (this.compareTo((AccessPoint) other) == 0); 389 } 390 391 @Override 392 public int hashCode() { 393 int result = 0; 394 if (mInfo != null) result += 13 * mInfo.hashCode(); 395 result += 19 * mRssi; 396 result += 23 * networkId; 397 result += 29 * ssid.hashCode(); 398 return result; 399 } 400 401 @Override 402 public String toString() { 403 StringBuilder builder = new StringBuilder().append("AccessPoint(") 404 .append(ssid); 405 if (bssid != null) { 406 builder.append(":").append(bssid); 407 } 408 if (isSaved()) { 409 builder.append(',').append("saved"); 410 } 411 if (isActive()) { 412 builder.append(',').append("active"); 413 } 414 if (isEphemeral()) { 415 builder.append(',').append("ephemeral"); 416 } 417 if (isConnectable()) { 418 builder.append(',').append("connectable"); 419 } 420 if (security != SECURITY_NONE) { 421 builder.append(',').append(securityToString(security, pskType)); 422 } 423 builder.append(",level=").append(getLevel()); 424 if (mSpeed != Speed.NONE) { 425 builder.append(",speed=").append(mSpeed); 426 } 427 builder.append(",metered=").append(isMetered()); 428 429 if (WifiTracker.sVerboseLogging) { 430 builder.append(",rssi=").append(mRssi); 431 builder.append(",scan cache size=").append(mScanResultCache.size()); 432 } 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 * @param maxScoreCacheAgeMillis the maximum age in milliseconds of scores to consider when 444 * generating speed labels 445 */ 446 boolean update( 447 WifiNetworkScoreCache scoreCache, 448 boolean scoringUiEnabled, 449 long maxScoreCacheAgeMillis) { 450 boolean scoreChanged = false; 451 if (scoringUiEnabled) { 452 scoreChanged = updateScores(scoreCache, maxScoreCacheAgeMillis); 453 } 454 return updateMetered(scoreCache) || scoreChanged; 455 } 456 457 /** 458 * Updates the AccessPoint rankingScore and speed, returning true if the data has changed. 459 * 460 * <p>Any cached {@link TimestampedScoredNetwork} objects older than the given max age in millis 461 * will be removed when this method is invoked. 462 * 463 * <p>Precondition: {@link #mRssi} is up to date before invoking this method. 464 * 465 * @param scoreCache The score cache to use to retrieve scores 466 * @param maxScoreCacheAgeMillis the maximum age in milliseconds of scores to consider when 467 * generating speed labels 468 * 469 * @return true if the set speed has changed 470 */ 471 private boolean updateScores(WifiNetworkScoreCache scoreCache, long maxScoreCacheAgeMillis) { 472 long nowMillis = SystemClock.elapsedRealtime(); 473 for (ScanResult result : mScanResultCache.values()) { 474 ScoredNetwork score = scoreCache.getScoredNetwork(result); 475 if (score == null) { 476 continue; 477 } 478 TimestampedScoredNetwork timedScore = mScoredNetworkCache.get(result.BSSID); 479 if (timedScore == null) { 480 mScoredNetworkCache.put( 481 result.BSSID, new TimestampedScoredNetwork(score, nowMillis)); 482 } else { 483 // Update data since the has been seen in the score cache 484 timedScore.update(score, nowMillis); 485 } 486 } 487 488 // Remove old cached networks 489 long evictionCutoff = nowMillis - maxScoreCacheAgeMillis; 490 Iterator<TimestampedScoredNetwork> iterator = mScoredNetworkCache.values().iterator(); 491 iterator.forEachRemaining(timestampedScoredNetwork -> { 492 if (timestampedScoredNetwork.getUpdatedTimestampMillis() < evictionCutoff) { 493 iterator.remove(); 494 } 495 }); 496 497 return updateSpeed(); 498 } 499 500 /** 501 * Updates the internal speed, returning true if the update resulted in a speed label change. 502 */ 503 private boolean updateSpeed() { 504 int oldSpeed = mSpeed; 505 mSpeed = generateAverageSpeedForSsid(); 506 507 boolean changed = oldSpeed != mSpeed; 508 if(WifiTracker.sVerboseLogging && changed) { 509 Log.i(TAG, String.format("%s: Set speed to %d", ssid, mSpeed)); 510 } 511 return changed; 512 } 513 514 /** Creates a speed value for the current {@link #mRssi} by averaging all non zero badges. */ 515 @Speed private int generateAverageSpeedForSsid() { 516 if (mScoredNetworkCache.isEmpty()) { 517 return Speed.NONE; 518 } 519 520 if (Log.isLoggable(TAG, Log.DEBUG)) { 521 Log.d(TAG, String.format("Generating fallbackspeed for %s using cache: %s", 522 getSsidStr(), mScoredNetworkCache)); 523 } 524 525 // TODO(b/63073866): If flickering issues persist, consider mapping using getLevel rather 526 // than specific rssi value so score doesn't change without a visible wifi bar change. This 527 // issue is likely to be more evident for the active AP whose RSSI value is not half-lifed. 528 529 int count = 0; 530 int totalSpeed = 0; 531 for (TimestampedScoredNetwork timedScore : mScoredNetworkCache.values()) { 532 int speed = timedScore.getScore().calculateBadge(mRssi); 533 if (speed != Speed.NONE) { 534 count++; 535 totalSpeed += speed; 536 } 537 } 538 int speed = count == 0 ? Speed.NONE : totalSpeed / count; 539 if (WifiTracker.sVerboseLogging) { 540 Log.i(TAG, String.format("%s generated fallback speed is: %d", getSsidStr(), speed)); 541 } 542 return roundToClosestSpeedEnum(speed); 543 } 544 545 /** 546 * Updates the AccessPoint's metering based on {@link ScoredNetwork#meteredHint}, returning 547 * true if the metering changed. 548 */ 549 private boolean updateMetered(WifiNetworkScoreCache scoreCache) { 550 boolean oldMetering = mIsScoredNetworkMetered; 551 mIsScoredNetworkMetered = false; 552 553 if (isActive() && mInfo != null) { 554 NetworkKey key = new NetworkKey(new WifiKey( 555 AccessPoint.convertToQuotedString(ssid), mInfo.getBSSID())); 556 ScoredNetwork score = scoreCache.getScoredNetwork(key); 557 if (score != null) { 558 mIsScoredNetworkMetered |= score.meteredHint; 559 } 560 } else { 561 for (ScanResult result : mScanResultCache.values()) { 562 ScoredNetwork score = scoreCache.getScoredNetwork(result); 563 if (score == null) { 564 continue; 565 } 566 mIsScoredNetworkMetered |= score.meteredHint; 567 } 568 } 569 return oldMetering == mIsScoredNetworkMetered; 570 } 571 572 private void evictOldScanResults() { 573 long nowMs = SystemClock.elapsedRealtime(); 574 for (Iterator<ScanResult> iter = mScanResultCache.values().iterator(); iter.hasNext(); ) { 575 ScanResult result = iter.next(); 576 // result timestamp is in microseconds 577 if (nowMs - result.timestamp / 1000 > MAX_SCAN_RESULT_AGE_MILLIS) { 578 iter.remove(); 579 } 580 } 581 } 582 583 public boolean matches(ScanResult result) { 584 return ssid.equals(result.SSID) && security == getSecurity(result); 585 } 586 587 public boolean matches(WifiConfiguration config) { 588 if (config.isPasspoint() && mConfig != null && mConfig.isPasspoint()) { 589 return ssid.equals(removeDoubleQuotes(config.SSID)) && config.FQDN.equals(mConfig.FQDN); 590 } else { 591 return ssid.equals(removeDoubleQuotes(config.SSID)) 592 && security == getSecurity(config) 593 && (mConfig == null || mConfig.shared == config.shared); 594 } 595 } 596 597 public WifiConfiguration getConfig() { 598 return mConfig; 599 } 600 601 public String getPasspointFqdn() { 602 return mFqdn; 603 } 604 605 public void clearConfig() { 606 mConfig = null; 607 networkId = WifiConfiguration.INVALID_NETWORK_ID; 608 } 609 610 public WifiInfo getInfo() { 611 return mInfo; 612 } 613 614 /** 615 * Returns the number of levels to show for a Wifi icon, from 0 to {@link #SIGNAL_LEVELS}-1. 616 * 617 * <p>Use {@#isReachable()} to determine if an AccessPoint is in range, as this method will 618 * always return at least 0. 619 */ 620 public int getLevel() { 621 return WifiManager.calculateSignalLevel(mRssi, SIGNAL_LEVELS); 622 } 623 624 public int getRssi() { 625 return mRssi; 626 } 627 628 /** 629 * Updates {@link #mRssi}. 630 * 631 * <p>If the given connection is active, the existing value of {@link #mRssi} will be returned. 632 * If the given AccessPoint is not active, a value will be calculated from previous scan 633 * results, returning the best RSSI for all matching AccessPoints averaged with the previous 634 * value. If the access point is not connected and there are no scan results, the rssi will be 635 * set to {@link #UNREACHABLE_RSSI}. 636 */ 637 private void updateRssi() { 638 if (this.isActive()) { 639 return; 640 } 641 642 int rssi = UNREACHABLE_RSSI; 643 for (ScanResult result : mScanResultCache.values()) { 644 if (result.level > rssi) { 645 rssi = result.level; 646 } 647 } 648 649 if (rssi != UNREACHABLE_RSSI && mRssi != UNREACHABLE_RSSI) { 650 mRssi = (mRssi + rssi) / 2; // half-life previous value 651 } else { 652 mRssi = rssi; 653 } 654 } 655 656 /** Updates {@link #mSeen} based on the scan result cache. */ 657 private void updateSeen() { 658 long seen = 0; 659 for (ScanResult result : mScanResultCache.values()) { 660 if (result.timestamp > seen) { 661 seen = result.timestamp; 662 } 663 } 664 665 // Only replace the previous value if we have a recent scan result to use 666 if (seen != 0) { 667 mSeen = seen; 668 } 669 } 670 671 /** 672 * Returns if the network should be considered metered. 673 */ 674 public boolean isMetered() { 675 return mIsScoredNetworkMetered 676 || WifiConfiguration.isMetered(mConfig, mInfo); 677 } 678 679 public NetworkInfo getNetworkInfo() { 680 return mNetworkInfo; 681 } 682 683 public int getSecurity() { 684 return security; 685 } 686 687 public String getSecurityString(boolean concise) { 688 Context context = mContext; 689 if (isPasspoint() || isPasspointConfig()) { 690 return concise ? context.getString(R.string.wifi_security_short_eap) : 691 context.getString(R.string.wifi_security_eap); 692 } 693 switch(security) { 694 case SECURITY_EAP: 695 return concise ? context.getString(R.string.wifi_security_short_eap) : 696 context.getString(R.string.wifi_security_eap); 697 case SECURITY_PSK: 698 switch (pskType) { 699 case PSK_WPA: 700 return concise ? context.getString(R.string.wifi_security_short_wpa) : 701 context.getString(R.string.wifi_security_wpa); 702 case PSK_WPA2: 703 return concise ? context.getString(R.string.wifi_security_short_wpa2) : 704 context.getString(R.string.wifi_security_wpa2); 705 case PSK_WPA_WPA2: 706 return concise ? context.getString(R.string.wifi_security_short_wpa_wpa2) : 707 context.getString(R.string.wifi_security_wpa_wpa2); 708 case PSK_UNKNOWN: 709 default: 710 return concise ? context.getString(R.string.wifi_security_short_psk_generic) 711 : context.getString(R.string.wifi_security_psk_generic); 712 } 713 case SECURITY_WEP: 714 return concise ? context.getString(R.string.wifi_security_short_wep) : 715 context.getString(R.string.wifi_security_wep); 716 case SECURITY_NONE: 717 default: 718 return concise ? "" : context.getString(R.string.wifi_security_none); 719 } 720 } 721 722 public String getSsidStr() { 723 return ssid; 724 } 725 726 public String getBssid() { 727 return bssid; 728 } 729 730 public CharSequence getSsid() { 731 final SpannableString str = new SpannableString(ssid); 732 str.setSpan(new TtsSpan.TelephoneBuilder(ssid).build(), 0, ssid.length(), 733 Spannable.SPAN_INCLUSIVE_INCLUSIVE); 734 return str; 735 } 736 737 public String getConfigName() { 738 if (mConfig != null && mConfig.isPasspoint()) { 739 return mConfig.providerFriendlyName; 740 } else if (mFqdn != null) { 741 return mProviderFriendlyName; 742 } else { 743 return ssid; 744 } 745 } 746 747 public DetailedState getDetailedState() { 748 if (mNetworkInfo != null) { 749 return mNetworkInfo.getDetailedState(); 750 } 751 Log.w(TAG, "NetworkInfo is null, cannot return detailed state"); 752 return null; 753 } 754 755 public boolean isCarrierAp() { 756 return mIsCarrierAp; 757 } 758 759 public int getCarrierApEapType() { 760 return mCarrierApEapType; 761 } 762 763 public String getCarrierName() { 764 return mCarrierName; 765 } 766 767 public String getSavedNetworkSummary() { 768 WifiConfiguration config = mConfig; 769 if (config != null) { 770 PackageManager pm = mContext.getPackageManager(); 771 String systemName = pm.getNameForUid(android.os.Process.SYSTEM_UID); 772 int userId = UserHandle.getUserId(config.creatorUid); 773 ApplicationInfo appInfo = null; 774 if (config.creatorName != null && config.creatorName.equals(systemName)) { 775 appInfo = mContext.getApplicationInfo(); 776 } else { 777 try { 778 IPackageManager ipm = AppGlobals.getPackageManager(); 779 appInfo = ipm.getApplicationInfo(config.creatorName, 0 /* flags */, userId); 780 } catch (RemoteException rex) { 781 } 782 } 783 if (appInfo != null && 784 !appInfo.packageName.equals(mContext.getString(R.string.settings_package)) && 785 !appInfo.packageName.equals( 786 mContext.getString(R.string.certinstaller_package))) { 787 return mContext.getString(R.string.saved_network, appInfo.loadLabel(pm)); 788 } 789 } 790 return ""; 791 } 792 793 public String getSummary() { 794 return getSettingsSummary(mConfig); 795 } 796 797 public String getSettingsSummary() { 798 return getSettingsSummary(mConfig); 799 } 800 801 private String getSettingsSummary(WifiConfiguration config) { 802 // Update to new summary 803 StringBuilder summary = new StringBuilder(); 804 805 if (isActive() && config != null && config.isPasspoint()) { 806 // This is the active connection on passpoint 807 summary.append(getSummary(mContext, getDetailedState(), 808 false, config.providerFriendlyName)); 809 } else if (isActive() && config != null && getDetailedState() == DetailedState.CONNECTED 810 && mIsCarrierAp) { 811 summary.append(String.format(mContext.getString(R.string.connected_via_carrier), mCarrierName)); 812 } else if (isActive()) { 813 // This is the active connection on non-passpoint network 814 summary.append(getSummary(mContext, getDetailedState(), 815 mInfo != null && mInfo.isEphemeral())); 816 } else if (config != null && config.isPasspoint() 817 && config.getNetworkSelectionStatus().isNetworkEnabled()) { 818 String format = mContext.getString(R.string.available_via_passpoint); 819 summary.append(String.format(format, config.providerFriendlyName)); 820 } else if (config != null && config.hasNoInternetAccess()) { 821 int messageID = config.getNetworkSelectionStatus().isNetworkPermanentlyDisabled() 822 ? R.string.wifi_no_internet_no_reconnect 823 : R.string.wifi_no_internet; 824 summary.append(mContext.getString(messageID)); 825 } else if (config != null && !config.getNetworkSelectionStatus().isNetworkEnabled()) { 826 WifiConfiguration.NetworkSelectionStatus networkStatus = 827 config.getNetworkSelectionStatus(); 828 switch (networkStatus.getNetworkSelectionDisableReason()) { 829 case WifiConfiguration.NetworkSelectionStatus.DISABLED_AUTHENTICATION_FAILURE: 830 summary.append(mContext.getString(R.string.wifi_disabled_password_failure)); 831 break; 832 case WifiConfiguration.NetworkSelectionStatus.DISABLED_BY_WRONG_PASSWORD: 833 summary.append(mContext.getString(R.string.wifi_check_password_try_again)); 834 break; 835 case WifiConfiguration.NetworkSelectionStatus.DISABLED_DHCP_FAILURE: 836 case WifiConfiguration.NetworkSelectionStatus.DISABLED_DNS_FAILURE: 837 summary.append(mContext.getString(R.string.wifi_disabled_network_failure)); 838 break; 839 case WifiConfiguration.NetworkSelectionStatus.DISABLED_ASSOCIATION_REJECTION: 840 summary.append(mContext.getString(R.string.wifi_disabled_generic)); 841 break; 842 } 843 } else if (config != null && config.getNetworkSelectionStatus().isNotRecommended()) { 844 summary.append(mContext.getString(R.string.wifi_disabled_by_recommendation_provider)); 845 } else if (mIsCarrierAp) { 846 summary.append(String.format(mContext.getString(R.string.available_via_carrier), mCarrierName)); 847 } else if (!isReachable()) { // Wifi out of range 848 summary.append(mContext.getString(R.string.wifi_not_in_range)); 849 } else { // In range, not disabled. 850 if (config != null) { // Is saved network 851 // Last attempt to connect to this failed. Show reason why 852 switch (config.recentFailure.getAssociationStatus()) { 853 case WifiConfiguration.RecentFailure.STATUS_AP_UNABLE_TO_HANDLE_NEW_STA: 854 summary.append(mContext.getString( 855 R.string.wifi_ap_unable_to_handle_new_sta)); 856 break; 857 default: 858 // "Saved" 859 summary.append(mContext.getString(R.string.wifi_remembered)); 860 break; 861 } 862 } 863 } 864 865 if (WifiTracker.sVerboseLogging) { 866 // Add RSSI/band information for this config, what was seen up to 6 seconds ago 867 // verbose WiFi Logging is only turned on thru developers settings 868 if (isActive() && mInfo != null) { 869 summary.append(" f=" + Integer.toString(mInfo.getFrequency())); 870 } 871 summary.append(" " + getVisibilityStatus()); 872 if (config != null && !config.getNetworkSelectionStatus().isNetworkEnabled()) { 873 summary.append(" (" + config.getNetworkSelectionStatus().getNetworkStatusString()); 874 if (config.getNetworkSelectionStatus().getDisableTime() > 0) { 875 long now = System.currentTimeMillis(); 876 long diff = (now - config.getNetworkSelectionStatus().getDisableTime()) / 1000; 877 long sec = diff%60; //seconds 878 long min = (diff/60)%60; //minutes 879 long hour = (min/60)%60; //hours 880 summary.append(", "); 881 if (hour > 0) summary.append(Long.toString(hour) + "h "); 882 summary.append( Long.toString(min) + "m "); 883 summary.append( Long.toString(sec) + "s "); 884 } 885 summary.append(")"); 886 } 887 888 if (config != null) { 889 WifiConfiguration.NetworkSelectionStatus networkStatus = 890 config.getNetworkSelectionStatus(); 891 for (int index = WifiConfiguration.NetworkSelectionStatus.NETWORK_SELECTION_ENABLE; 892 index < WifiConfiguration.NetworkSelectionStatus 893 .NETWORK_SELECTION_DISABLED_MAX; index++) { 894 if (networkStatus.getDisableReasonCounter(index) != 0) { 895 summary.append(" " + WifiConfiguration.NetworkSelectionStatus 896 .getNetworkDisableReasonString(index) + "=" 897 + networkStatus.getDisableReasonCounter(index)); 898 } 899 } 900 } 901 } 902 903 // If Speed label and summary are both present, use the preference combination to combine 904 // the two, else return the non-null one. 905 if (getSpeedLabel() != null && summary.length() != 0) { 906 return mContext.getResources().getString( 907 R.string.preference_summary_default_combination, 908 getSpeedLabel(), 909 summary.toString()); 910 } else if (getSpeedLabel() != null) { 911 return getSpeedLabel(); 912 } else { 913 return summary.toString(); 914 } 915 } 916 917 /** 918 * Returns the visibility status of the WifiConfiguration. 919 * 920 * @return autojoin debugging information 921 * TODO: use a string formatter 922 * ["rssi 5Ghz", "num results on 5GHz" / "rssi 5Ghz", "num results on 5GHz"] 923 * For instance [-40,5/-30,2] 924 */ 925 private String getVisibilityStatus() { 926 StringBuilder visibility = new StringBuilder(); 927 StringBuilder scans24GHz = new StringBuilder(); 928 StringBuilder scans5GHz = new StringBuilder(); 929 String bssid = null; 930 931 long now = System.currentTimeMillis(); 932 933 if (isActive() && mInfo != null) { 934 bssid = mInfo.getBSSID(); 935 if (bssid != null) { 936 visibility.append(" ").append(bssid); 937 } 938 visibility.append(" rssi=").append(mInfo.getRssi()); 939 visibility.append(" "); 940 visibility.append(" score=").append(mInfo.score); 941 if (mSpeed != Speed.NONE) { 942 visibility.append(" speed=").append(getSpeedLabel()); 943 } 944 visibility.append(String.format(" tx=%.1f,", mInfo.txSuccessRate)); 945 visibility.append(String.format("%.1f,", mInfo.txRetriesRate)); 946 visibility.append(String.format("%.1f ", mInfo.txBadRate)); 947 visibility.append(String.format("rx=%.1f", mInfo.rxSuccessRate)); 948 } 949 950 int maxRssi5 = WifiConfiguration.INVALID_RSSI; 951 int maxRssi24 = WifiConfiguration.INVALID_RSSI; 952 final int maxDisplayedScans = 4; 953 int num5 = 0; // number of scanned BSSID on 5GHz band 954 int num24 = 0; // number of scanned BSSID on 2.4Ghz band 955 int numBlackListed = 0; 956 evictOldScanResults(); 957 958 // TODO: sort list by RSSI or age 959 long nowMs = SystemClock.elapsedRealtime(); 960 for (ScanResult result : mScanResultCache.values()) { 961 if (result.frequency >= LOWER_FREQ_5GHZ 962 && result.frequency <= HIGHER_FREQ_5GHZ) { 963 // Strictly speaking: [4915, 5825] 964 num5++; 965 966 if (result.level > maxRssi5) { 967 maxRssi5 = result.level; 968 } 969 if (num5 <= maxDisplayedScans) { 970 scans5GHz.append(verboseScanResultSummary(result, bssid, nowMs)); 971 } 972 } else if (result.frequency >= LOWER_FREQ_24GHZ 973 && result.frequency <= HIGHER_FREQ_24GHZ) { 974 // Strictly speaking: [2412, 2482] 975 num24++; 976 977 if (result.level > maxRssi24) { 978 maxRssi24 = result.level; 979 } 980 if (num24 <= maxDisplayedScans) { 981 scans24GHz.append(verboseScanResultSummary(result, bssid, nowMs)); 982 } 983 } 984 } 985 visibility.append(" ["); 986 if (num24 > 0) { 987 visibility.append("(").append(num24).append(")"); 988 if (num24 > maxDisplayedScans) { 989 visibility.append("max=").append(maxRssi24).append(","); 990 } 991 visibility.append(scans24GHz.toString()); 992 } 993 visibility.append(";"); 994 if (num5 > 0) { 995 visibility.append("(").append(num5).append(")"); 996 if (num5 > maxDisplayedScans) { 997 visibility.append("max=").append(maxRssi5).append(","); 998 } 999 visibility.append(scans5GHz.toString()); 1000 } 1001 if (numBlackListed > 0) 1002 visibility.append("!").append(numBlackListed); 1003 visibility.append("]"); 1004 1005 return visibility.toString(); 1006 } 1007 1008 @VisibleForTesting 1009 /* package */ String verboseScanResultSummary(ScanResult result, String bssid, long nowMs) { 1010 StringBuilder stringBuilder = new StringBuilder(); 1011 stringBuilder.append(" \n{").append(result.BSSID); 1012 if (result.BSSID.equals(bssid)) { 1013 stringBuilder.append("*"); 1014 } 1015 stringBuilder.append("=").append(result.frequency); 1016 stringBuilder.append(",").append(result.level); 1017 int speed = getSpecificApSpeed(result); 1018 if (speed != Speed.NONE) { 1019 stringBuilder.append(",") 1020 .append(getSpeedLabel(speed)); 1021 } 1022 int ageSeconds = (int) (nowMs - result.timestamp / 1000) / 1000; 1023 stringBuilder.append(",").append(ageSeconds).append("s"); 1024 stringBuilder.append("}"); 1025 return stringBuilder.toString(); 1026 } 1027 1028 @Speed private int getSpecificApSpeed(ScanResult result) { 1029 TimestampedScoredNetwork timedScore = mScoredNetworkCache.get(result.BSSID); 1030 if (timedScore == null) { 1031 return Speed.NONE; 1032 } 1033 // For debugging purposes we may want to use mRssi rather than result.level as the average 1034 // speed wil be determined by mRssi 1035 return timedScore.getScore().calculateBadge(result.level); 1036 } 1037 1038 /** 1039 * Return whether this is the active connection. 1040 * For ephemeral connections (networkId is invalid), this returns false if the network is 1041 * disconnected. 1042 */ 1043 public boolean isActive() { 1044 return mNetworkInfo != null && 1045 (networkId != WifiConfiguration.INVALID_NETWORK_ID || 1046 mNetworkInfo.getState() != State.DISCONNECTED); 1047 } 1048 1049 public boolean isConnectable() { 1050 return getLevel() != -1 && getDetailedState() == null; 1051 } 1052 1053 public boolean isEphemeral() { 1054 return mInfo != null && mInfo.isEphemeral() && 1055 mNetworkInfo != null && mNetworkInfo.getState() != State.DISCONNECTED; 1056 } 1057 1058 /** 1059 * Return true if this AccessPoint represents a Passpoint AP. 1060 */ 1061 public boolean isPasspoint() { 1062 return mConfig != null && mConfig.isPasspoint(); 1063 } 1064 1065 /** 1066 * Return true if this AccessPoint represents a Passpoint provider configuration. 1067 */ 1068 public boolean isPasspointConfig() { 1069 return mFqdn != null; 1070 } 1071 1072 /** 1073 * Return whether the given {@link WifiInfo} is for this access point. 1074 * If the current AP does not have a network Id then the config is used to 1075 * match based on SSID and security. 1076 */ 1077 private boolean isInfoForThisAccessPoint(WifiConfiguration config, WifiInfo info) { 1078 if (isPasspoint() == false && networkId != WifiConfiguration.INVALID_NETWORK_ID) { 1079 return networkId == info.getNetworkId(); 1080 } else if (config != null) { 1081 return matches(config); 1082 } 1083 else { 1084 // Might be an ephemeral connection with no WifiConfiguration. Try matching on SSID. 1085 // (Note that we only do this if the WifiConfiguration explicitly equals INVALID). 1086 // TODO: Handle hex string SSIDs. 1087 return ssid.equals(removeDoubleQuotes(info.getSSID())); 1088 } 1089 } 1090 1091 public boolean isSaved() { 1092 return networkId != WifiConfiguration.INVALID_NETWORK_ID; 1093 } 1094 1095 public Object getTag() { 1096 return mTag; 1097 } 1098 1099 public void setTag(Object tag) { 1100 mTag = tag; 1101 } 1102 1103 /** 1104 * Generate and save a default wifiConfiguration with common values. 1105 * Can only be called for unsecured networks. 1106 */ 1107 public void generateOpenNetworkConfig() { 1108 if (security != SECURITY_NONE) 1109 throw new IllegalStateException(); 1110 if (mConfig != null) 1111 return; 1112 mConfig = new WifiConfiguration(); 1113 mConfig.SSID = AccessPoint.convertToQuotedString(ssid); 1114 mConfig.allowedKeyManagement.set(KeyMgmt.NONE); 1115 } 1116 1117 void loadConfig(WifiConfiguration config) { 1118 ssid = (config.SSID == null ? "" : removeDoubleQuotes(config.SSID)); 1119 bssid = config.BSSID; 1120 security = getSecurity(config); 1121 networkId = config.networkId; 1122 mConfig = config; 1123 } 1124 1125 private void initWithScanResult(ScanResult result) { 1126 ssid = result.SSID; 1127 bssid = result.BSSID; 1128 security = getSecurity(result); 1129 if (security == SECURITY_PSK) 1130 pskType = getPskType(result); 1131 1132 mScanResultCache.put(result.BSSID, result); 1133 updateRssi(); 1134 mSeen = result.timestamp; // even if the timestamp is old it is still valid 1135 mIsCarrierAp = result.isCarrierAp; 1136 mCarrierApEapType = result.carrierApEapType; 1137 mCarrierName = result.carrierName; 1138 } 1139 1140 public void saveWifiState(Bundle savedState) { 1141 if (ssid != null) savedState.putString(KEY_SSID, getSsidStr()); 1142 savedState.putInt(KEY_SECURITY, security); 1143 savedState.putInt(KEY_SPEED, mSpeed); 1144 savedState.putInt(KEY_PSKTYPE, pskType); 1145 if (mConfig != null) savedState.putParcelable(KEY_CONFIG, mConfig); 1146 savedState.putParcelable(KEY_WIFIINFO, mInfo); 1147 evictOldScanResults(); 1148 savedState.putParcelableArrayList(KEY_SCANRESULTCACHE, 1149 new ArrayList<ScanResult>(mScanResultCache.values())); 1150 savedState.putParcelableArrayList(KEY_SCOREDNETWORKCACHE, 1151 new ArrayList<>(mScoredNetworkCache.values())); 1152 if (mNetworkInfo != null) { 1153 savedState.putParcelable(KEY_NETWORKINFO, mNetworkInfo); 1154 } 1155 if (mFqdn != null) { 1156 savedState.putString(KEY_FQDN, mFqdn); 1157 } 1158 if (mProviderFriendlyName != null) { 1159 savedState.putString(KEY_PROVIDER_FRIENDLY_NAME, mProviderFriendlyName); 1160 } 1161 savedState.putBoolean(KEY_IS_CARRIER_AP, mIsCarrierAp); 1162 savedState.putInt(KEY_CARRIER_AP_EAP_TYPE, mCarrierApEapType); 1163 savedState.putString(KEY_CARRIER_NAME, mCarrierName); 1164 } 1165 1166 public void setListener(AccessPointListener listener) { 1167 mAccessPointListener = listener; 1168 } 1169 1170 /** 1171 * Update the AP with the given scan result. 1172 * 1173 * @param result the ScanResult to add to the AccessPoint scan cache 1174 * @param evictOldScanResults whether stale scan results should be removed 1175 * from the cache during this update process 1176 * @return true if the scan result update caused a change in state which would impact ranking 1177 * or AccessPoint rendering (e.g. wifi level, security) 1178 */ 1179 boolean update(ScanResult result, boolean evictOldScanResults) { 1180 if (matches(result)) { 1181 int oldLevel = getLevel(); 1182 1183 /* Add or update the scan result for the BSSID */ 1184 mScanResultCache.put(result.BSSID, result); 1185 if (evictOldScanResults) evictOldScanResults(); 1186 updateSeen(); 1187 updateRssi(); 1188 int newLevel = getLevel(); 1189 1190 if (newLevel > 0 && newLevel != oldLevel) { 1191 // Only update labels on visible rssi changes 1192 updateSpeed(); 1193 if (mAccessPointListener != null) { 1194 mAccessPointListener.onLevelChanged(this); 1195 } 1196 } 1197 // This flag only comes from scans, is not easily saved in config 1198 if (security == SECURITY_PSK) { 1199 pskType = getPskType(result); 1200 } 1201 1202 if (mAccessPointListener != null) { 1203 mAccessPointListener.onAccessPointChanged(this); 1204 } 1205 1206 // The carrier info in the ScanResult is set by the platform based on the SSID and will 1207 // always be the same for all matching scan results. 1208 mIsCarrierAp = result.isCarrierAp; 1209 mCarrierApEapType = result.carrierApEapType; 1210 mCarrierName = result.carrierName; 1211 1212 return true; 1213 } 1214 return false; 1215 } 1216 1217 /** Attempt to update the AccessPoint and return true if an update occurred. */ 1218 public boolean update( 1219 @Nullable WifiConfiguration config, WifiInfo info, NetworkInfo networkInfo) { 1220 1221 boolean updated = false; 1222 final int oldLevel = getLevel(); 1223 if (info != null && isInfoForThisAccessPoint(config, info)) { 1224 updated = (mInfo == null); 1225 if (mConfig != config) { 1226 // We do not set updated = true as we do not want to increase the amount of sorting 1227 // and copying performed in WifiTracker at this time. If issues involving refresh 1228 // are still seen, we will investigate further. 1229 update(config); // Notifies the AccessPointListener of the change 1230 } 1231 if (mRssi != info.getRssi() && info.getRssi() != WifiInfo.INVALID_RSSI) { 1232 mRssi = info.getRssi(); 1233 updated = true; 1234 } else if (mNetworkInfo != null && networkInfo != null 1235 && mNetworkInfo.getDetailedState() != networkInfo.getDetailedState()) { 1236 updated = true; 1237 } 1238 mInfo = info; 1239 mNetworkInfo = networkInfo; 1240 } else if (mInfo != null) { 1241 updated = true; 1242 mInfo = null; 1243 mNetworkInfo = null; 1244 } 1245 if (updated && mAccessPointListener != null) { 1246 mAccessPointListener.onAccessPointChanged(this); 1247 1248 if (oldLevel != getLevel() /* current level */) { 1249 mAccessPointListener.onLevelChanged(this); 1250 } 1251 } 1252 1253 return updated; 1254 } 1255 1256 void update(@Nullable WifiConfiguration config) { 1257 mConfig = config; 1258 networkId = config != null ? config.networkId : WifiConfiguration.INVALID_NETWORK_ID; 1259 if (mAccessPointListener != null) { 1260 mAccessPointListener.onAccessPointChanged(this); 1261 } 1262 } 1263 1264 @VisibleForTesting 1265 void setRssi(int rssi) { 1266 mRssi = rssi; 1267 } 1268 1269 /** Sets the rssi to {@link #UNREACHABLE_RSSI}. */ 1270 void setUnreachable() { 1271 setRssi(AccessPoint.UNREACHABLE_RSSI); 1272 } 1273 1274 int getSpeed() { return mSpeed;} 1275 1276 @Nullable 1277 String getSpeedLabel() { 1278 return getSpeedLabel(mSpeed); 1279 } 1280 1281 @Nullable 1282 @Speed 1283 private int roundToClosestSpeedEnum(int speed) { 1284 if (speed < Speed.SLOW) { 1285 return Speed.NONE; 1286 } else if (speed < (Speed.SLOW + Speed.MODERATE) / 2) { 1287 return Speed.SLOW; 1288 } else if (speed < (Speed.MODERATE + Speed.FAST) / 2) { 1289 return Speed.MODERATE; 1290 } else if (speed < (Speed.FAST + Speed.VERY_FAST) / 2) { 1291 return Speed.FAST; 1292 } else { 1293 return Speed.VERY_FAST; 1294 } 1295 } 1296 1297 @Nullable 1298 private String getSpeedLabel(@Speed int speed) { 1299 switch (speed) { 1300 case Speed.VERY_FAST: 1301 return mContext.getString(R.string.speed_label_very_fast); 1302 case Speed.FAST: 1303 return mContext.getString(R.string.speed_label_fast); 1304 case Speed.MODERATE: 1305 return mContext.getString(R.string.speed_label_okay); 1306 case Speed.SLOW: 1307 return mContext.getString(R.string.speed_label_slow); 1308 case Speed.NONE: 1309 default: 1310 return null; 1311 } 1312 } 1313 1314 /** Return true if the current RSSI is reachable, and false otherwise. */ 1315 public boolean isReachable() { 1316 return mRssi != UNREACHABLE_RSSI; 1317 } 1318 1319 public static String getSummary(Context context, String ssid, DetailedState state, 1320 boolean isEphemeral, String passpointProvider) { 1321 if (state == DetailedState.CONNECTED && ssid == null) { 1322 if (TextUtils.isEmpty(passpointProvider) == false) { 1323 // Special case for connected + passpoint networks. 1324 String format = context.getString(R.string.connected_via_passpoint); 1325 return String.format(format, passpointProvider); 1326 } else if (isEphemeral) { 1327 // Special case for connected + ephemeral networks. 1328 final NetworkScoreManager networkScoreManager = context.getSystemService( 1329 NetworkScoreManager.class); 1330 NetworkScorerAppData scorer = networkScoreManager.getActiveScorer(); 1331 if (scorer != null && scorer.getRecommendationServiceLabel() != null) { 1332 String format = context.getString(R.string.connected_via_network_scorer); 1333 return String.format(format, scorer.getRecommendationServiceLabel()); 1334 } else { 1335 return context.getString(R.string.connected_via_network_scorer_default); 1336 } 1337 } 1338 } 1339 1340 // Case when there is wifi connected without internet connectivity. 1341 final ConnectivityManager cm = (ConnectivityManager) 1342 context.getSystemService(Context.CONNECTIVITY_SERVICE); 1343 if (state == DetailedState.CONNECTED) { 1344 IWifiManager wifiManager = IWifiManager.Stub.asInterface( 1345 ServiceManager.getService(Context.WIFI_SERVICE)); 1346 NetworkCapabilities nc = null; 1347 1348 try { 1349 nc = cm.getNetworkCapabilities(wifiManager.getCurrentNetwork()); 1350 } catch (RemoteException e) {} 1351 1352 if (nc != null) { 1353 if (nc.hasCapability(nc.NET_CAPABILITY_CAPTIVE_PORTAL)) { 1354 int id = context.getResources() 1355 .getIdentifier("network_available_sign_in", "string", "android"); 1356 return context.getString(id); 1357 } else if (!nc.hasCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED)) { 1358 return context.getString(R.string.wifi_connected_no_internet); 1359 } 1360 } 1361 } 1362 if (state == null) { 1363 Log.w(TAG, "state is null, returning empty summary"); 1364 return ""; 1365 } 1366 String[] formats = context.getResources().getStringArray((ssid == null) 1367 ? R.array.wifi_status : R.array.wifi_status_with_ssid); 1368 int index = state.ordinal(); 1369 1370 if (index >= formats.length || formats[index].length() == 0) { 1371 return ""; 1372 } 1373 return String.format(formats[index], ssid); 1374 } 1375 1376 public static String getSummary(Context context, DetailedState state, boolean isEphemeral) { 1377 return getSummary(context, null, state, isEphemeral, null); 1378 } 1379 1380 public static String getSummary(Context context, DetailedState state, boolean isEphemeral, 1381 String passpointProvider) { 1382 return getSummary(context, null, state, isEphemeral, passpointProvider); 1383 } 1384 1385 public static String convertToQuotedString(String string) { 1386 return "\"" + string + "\""; 1387 } 1388 1389 private static int getPskType(ScanResult result) { 1390 boolean wpa = result.capabilities.contains("WPA-PSK"); 1391 boolean wpa2 = result.capabilities.contains("WPA2-PSK"); 1392 if (wpa2 && wpa) { 1393 return PSK_WPA_WPA2; 1394 } else if (wpa2) { 1395 return PSK_WPA2; 1396 } else if (wpa) { 1397 return PSK_WPA; 1398 } else { 1399 Log.w(TAG, "Received abnormal flag string: " + result.capabilities); 1400 return PSK_UNKNOWN; 1401 } 1402 } 1403 1404 private static int getSecurity(ScanResult result) { 1405 if (result.capabilities.contains("WEP")) { 1406 return SECURITY_WEP; 1407 } else if (result.capabilities.contains("PSK")) { 1408 return SECURITY_PSK; 1409 } else if (result.capabilities.contains("EAP")) { 1410 return SECURITY_EAP; 1411 } 1412 return SECURITY_NONE; 1413 } 1414 1415 static int getSecurity(WifiConfiguration config) { 1416 if (config.allowedKeyManagement.get(KeyMgmt.WPA_PSK)) { 1417 return SECURITY_PSK; 1418 } 1419 if (config.allowedKeyManagement.get(KeyMgmt.WPA_EAP) || 1420 config.allowedKeyManagement.get(KeyMgmt.IEEE8021X)) { 1421 return SECURITY_EAP; 1422 } 1423 return (config.wepKeys[0] != null) ? SECURITY_WEP : SECURITY_NONE; 1424 } 1425 1426 public static String securityToString(int security, int pskType) { 1427 if (security == SECURITY_WEP) { 1428 return "WEP"; 1429 } else if (security == SECURITY_PSK) { 1430 if (pskType == PSK_WPA) { 1431 return "WPA"; 1432 } else if (pskType == PSK_WPA2) { 1433 return "WPA2"; 1434 } else if (pskType == PSK_WPA_WPA2) { 1435 return "WPA_WPA2"; 1436 } 1437 return "PSK"; 1438 } else if (security == SECURITY_EAP) { 1439 return "EAP"; 1440 } 1441 return "NONE"; 1442 } 1443 1444 static String removeDoubleQuotes(String string) { 1445 if (TextUtils.isEmpty(string)) { 1446 return ""; 1447 } 1448 int length = string.length(); 1449 if ((length > 1) && (string.charAt(0) == '"') 1450 && (string.charAt(length - 1) == '"')) { 1451 return string.substring(1, length - 1); 1452 } 1453 return string; 1454 } 1455 1456 public interface AccessPointListener { 1457 void onAccessPointChanged(AccessPoint accessPoint); 1458 void onLevelChanged(AccessPoint accessPoint); 1459 } 1460 } 1461
