AccessPoint.java revision dc6cf4b683c6b8af678dc7f50c069879013f9fa5
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.app.AppGlobals; 20import android.content.Context; 21import android.content.pm.ApplicationInfo; 22import android.content.pm.IPackageManager; 23import android.content.pm.PackageManager; 24import android.net.ConnectivityManager; 25import android.net.NetworkBadging; 26import android.net.NetworkCapabilities; 27import android.net.NetworkInfo; 28import android.net.NetworkInfo.DetailedState; 29import android.net.NetworkInfo.State; 30import android.net.ScoredNetwork; 31import android.net.wifi.IWifiManager; 32import android.net.wifi.ScanResult; 33import android.net.wifi.WifiConfiguration; 34import android.net.wifi.WifiConfiguration.KeyMgmt; 35import android.net.wifi.WifiInfo; 36import android.net.wifi.WifiManager; 37import android.net.wifi.WifiNetworkScoreCache; 38import android.os.Bundle; 39import android.os.RemoteException; 40import android.os.ServiceManager; 41import android.os.SystemClock; 42import android.os.UserHandle; 43import android.support.annotation.NonNull; 44import android.text.Spannable; 45import android.text.SpannableString; 46import android.text.TextUtils; 47import android.text.style.TtsSpan; 48import android.util.Log; 49 50import com.android.settingslib.R; 51 52import java.util.ArrayList; 53import java.util.Iterator; 54import java.util.concurrent.ConcurrentHashMap; 55import java.util.concurrent.atomic.AtomicInteger; 56 57 58public class AccessPoint implements Comparable<AccessPoint> { 59 static final String TAG = "SettingsLib.AccessPoint"; 60 61 /** 62 * Lower bound on the 2.4 GHz (802.11b/g/n) WLAN channels 63 */ 64 public static final int LOWER_FREQ_24GHZ = 2400; 65 66 /** 67 * Upper bound on the 2.4 GHz (802.11b/g/n) WLAN channels 68 */ 69 public static final int HIGHER_FREQ_24GHZ = 2500; 70 71 /** 72 * Lower bound on the 5.0 GHz (802.11a/h/j/n/ac) WLAN channels 73 */ 74 public static final int LOWER_FREQ_5GHZ = 4900; 75 76 /** 77 * Upper bound on the 5.0 GHz (802.11a/h/j/n/ac) WLAN channels 78 */ 79 public static final int HIGHER_FREQ_5GHZ = 5900; 80 81 82 /** 83 * Experimental: we should be able to show the user the list of BSSIDs and bands 84 * for that SSID. 85 * For now this data is used only with Verbose Logging so as to show the band and number 86 * of BSSIDs on which that network is seen. 87 */ 88 private final ConcurrentHashMap<String, ScanResult> mScanResultCache = 89 new ConcurrentHashMap<String, ScanResult>(32); 90 private static final long MAX_SCAN_RESULT_AGE_MS = 15000; 91 92 static final String KEY_NETWORKINFO = "key_networkinfo"; 93 static final String KEY_WIFIINFO = "key_wifiinfo"; 94 static final String KEY_SCANRESULT = "key_scanresult"; 95 static final String KEY_SSID = "key_ssid"; 96 static final String KEY_SECURITY = "key_security"; 97 static final String KEY_PSKTYPE = "key_psktype"; 98 static final String KEY_SCANRESULTCACHE = "key_scanresultcache"; 99 static final String KEY_CONFIG = "key_config"; 100 static final AtomicInteger sLastId = new AtomicInteger(0); 101 102 /** 103 * These values are matched in string arrays -- changes must be kept in sync 104 */ 105 public static final int SECURITY_NONE = 0; 106 public static final int SECURITY_WEP = 1; 107 public static final int SECURITY_PSK = 2; 108 public static final int SECURITY_EAP = 3; 109 110 private static final int PSK_UNKNOWN = 0; 111 private static final int PSK_WPA = 1; 112 private static final int PSK_WPA2 = 2; 113 private static final int PSK_WPA_WPA2 = 3; 114 115 public static final int SIGNAL_LEVELS = 4; 116 117 static final int UNREACHABLE_RSSI = Integer.MAX_VALUE; 118 119 private final Context mContext; 120 121 private String ssid; 122 private String bssid; 123 private int security; 124 private int networkId = WifiConfiguration.INVALID_NETWORK_ID; 125 126 private int pskType = PSK_UNKNOWN; 127 128 private WifiConfiguration mConfig; 129 130 private int mRssi = UNREACHABLE_RSSI; 131 private long mSeen = 0; 132 133 private WifiInfo mInfo; 134 private NetworkInfo mNetworkInfo; 135 AccessPointListener mAccessPointListener; 136 137 private Object mTag; 138 139 private int mRankingScore = Integer.MIN_VALUE; 140 private int mBadge = NetworkBadging.BADGING_NONE; 141 142 // used to co-relate internal vs returned accesspoint. 143 int mId; 144 145 public AccessPoint(Context context, Bundle savedState) { 146 mContext = context; 147 mConfig = savedState.getParcelable(KEY_CONFIG); 148 if (mConfig != null) { 149 loadConfig(mConfig); 150 } 151 if (savedState.containsKey(KEY_SSID)) { 152 ssid = savedState.getString(KEY_SSID); 153 } 154 if (savedState.containsKey(KEY_SECURITY)) { 155 security = savedState.getInt(KEY_SECURITY); 156 } 157 if (savedState.containsKey(KEY_PSKTYPE)) { 158 pskType = savedState.getInt(KEY_PSKTYPE); 159 } 160 mInfo = (WifiInfo) savedState.getParcelable(KEY_WIFIINFO); 161 if (savedState.containsKey(KEY_NETWORKINFO)) { 162 mNetworkInfo = savedState.getParcelable(KEY_NETWORKINFO); 163 } 164 if (savedState.containsKey(KEY_SCANRESULTCACHE)) { 165 ArrayList<ScanResult> scanResultArrayList = 166 savedState.getParcelableArrayList(KEY_SCANRESULTCACHE); 167 mScanResultCache.clear(); 168 for (ScanResult result : scanResultArrayList) { 169 mScanResultCache.put(result.BSSID, result); 170 } 171 } 172 update(mConfig, mInfo, mNetworkInfo); 173 mRssi = getRssi(); 174 mSeen = getSeen(); 175 mId = sLastId.incrementAndGet(); 176 } 177 178 AccessPoint(Context context, ScanResult result) { 179 mContext = context; 180 initWithScanResult(result); 181 mId = sLastId.incrementAndGet(); 182 } 183 184 AccessPoint(Context context, WifiConfiguration config) { 185 mContext = context; 186 loadConfig(config); 187 mId = sLastId.incrementAndGet(); 188 } 189 190 AccessPoint(Context context, AccessPoint other) { 191 mContext = context; 192 copyFrom(other); 193 } 194 195 /** 196 * Copy accesspoint information. NOTE: We do not copy tag information because that is never 197 * set on the internal copy. 198 * @param that 199 */ 200 void copyFrom(AccessPoint that) { 201 that.evictOldScanResults(); 202 this.ssid = that.ssid; 203 this.bssid = that.bssid; 204 this.security = that.security; 205 this.networkId = that.networkId; 206 this.pskType = that.pskType; 207 this.mConfig = that.mConfig; //TODO: Watch out, this object is mutated. 208 this.mRssi = that.mRssi; 209 this.mSeen = that.mSeen; 210 this.mInfo = that.mInfo; 211 this.mNetworkInfo = that.mNetworkInfo; 212 this.mScanResultCache.clear(); 213 this.mScanResultCache.putAll(that.mScanResultCache); 214 this.mId = that.mId; 215 this.mBadge = that.mBadge; 216 this.mRankingScore = that.mRankingScore; 217 } 218 219 /** 220 * Returns a negative integer, zero, or a positive integer if this AccessPoint is less than, 221 * equal to, or greater than the other AccessPoint. 222 * 223 * Sort order rules for AccessPoints: 224 * 1. Active before inactive 225 * 2. Reachable before unreachable 226 * 3. Saved before unsaved 227 * 4. (Internal only) Network ranking score 228 * 5. Stronger signal before weaker signal 229 * 6. SSID alphabetically 230 * 231 * Note that AccessPoints with a signal are usually also Reachable, 232 * and will thus appear before unreachable saved AccessPoints. 233 */ 234 @Override 235 public int compareTo(@NonNull AccessPoint other) { 236 // Active one goes first. 237 if (isActive() && !other.isActive()) return -1; 238 if (!isActive() && other.isActive()) return 1; 239 240 // Reachable one goes before unreachable one. 241 if (isReachable() && !other.isReachable()) return -1; 242 if (!isReachable() && other.isReachable()) return 1; 243 244 // Configured (saved) one goes before unconfigured one. 245 if (isSaved() && !other.isSaved()) return -1; 246 if (!isSaved() && other.isSaved()) return 1; 247 248 // Higher scores go before lower scores 249 if (getRankingScore() != other.getRankingScore()) { 250 return (getRankingScore() > other.getRankingScore()) ? -1 : 1; 251 } 252 253 // Sort by signal strength, bucketed by level 254 int difference = WifiManager.calculateSignalLevel(other.mRssi, SIGNAL_LEVELS) 255 - WifiManager.calculateSignalLevel(mRssi, SIGNAL_LEVELS); 256 if (difference != 0) { 257 return difference; 258 } 259 // Sort by ssid. 260 return getSsidStr().compareToIgnoreCase(other.getSsidStr()); 261 } 262 263 @Override 264 public boolean equals(Object other) { 265 if (!(other instanceof AccessPoint)) return false; 266 return (this.compareTo((AccessPoint) other) == 0); 267 } 268 269 @Override 270 public int hashCode() { 271 int result = 0; 272 if (mInfo != null) result += 13 * mInfo.hashCode(); 273 result += 19 * mRssi; 274 result += 23 * networkId; 275 result += 29 * ssid.hashCode(); 276 return result; 277 } 278 279 @Override 280 public String toString() { 281 StringBuilder builder = new StringBuilder().append("AccessPoint(") 282 .append(ssid); 283 if (bssid != null) { 284 builder.append(":").append(bssid); 285 } 286 if (isSaved()) { 287 builder.append(',').append("saved"); 288 } 289 if (isActive()) { 290 builder.append(',').append("active"); 291 } 292 if (isEphemeral()) { 293 builder.append(',').append("ephemeral"); 294 } 295 if (isConnectable()) { 296 builder.append(',').append("connectable"); 297 } 298 if (security != SECURITY_NONE) { 299 builder.append(',').append(securityToString(security, pskType)); 300 } 301 builder.append(",level=").append(getLevel()); 302 builder.append(",rankingScore=").append(mRankingScore); 303 builder.append(",badge=").append(mBadge); 304 305 return builder.append(')').toString(); 306 } 307 308 /** 309 * Updates the AccessPoint rankingScore and badge, returning true if the data has changed. 310 * 311 * @param scoreCache The score cache to use to retrieve scores. 312 */ 313 boolean updateScores(WifiNetworkScoreCache scoreCache) { 314 int oldBadge = mBadge; 315 int oldRankingScore = mRankingScore; 316 mBadge = NetworkBadging.BADGING_NONE; 317 mRankingScore = Integer.MIN_VALUE; 318 319 for (ScanResult result : mScanResultCache.values()) { 320 ScoredNetwork score = scoreCache.getScoredNetwork(result); 321 if (score == null) { 322 continue; 323 } 324 325 if (score.hasRankingScore()) { 326 mRankingScore = Math.max(mRankingScore, score.calculateRankingScore(result.level)); 327 } 328 mBadge = Math.max(mBadge, score.calculateBadge(result.level)); 329 } 330 331 return (oldBadge != mBadge || oldRankingScore != mRankingScore); 332 } 333 334 private void evictOldScanResults() { 335 long nowMs = SystemClock.elapsedRealtime(); 336 for (Iterator<ScanResult> iter = mScanResultCache.values().iterator(); iter.hasNext(); ) { 337 ScanResult result = iter.next(); 338 // result timestamp is in microseconds 339 if (nowMs - result.timestamp / 1000 > MAX_SCAN_RESULT_AGE_MS) { 340 iter.remove(); 341 } 342 } 343 } 344 345 public boolean matches(ScanResult result) { 346 return ssid.equals(result.SSID) && security == getSecurity(result); 347 } 348 349 public boolean matches(WifiConfiguration config) { 350 if (config.isPasspoint() && mConfig != null && mConfig.isPasspoint()) { 351 return ssid.equals(removeDoubleQuotes(config.SSID)) && config.FQDN.equals(mConfig.FQDN); 352 } else { 353 return ssid.equals(removeDoubleQuotes(config.SSID)) 354 && security == getSecurity(config) 355 && (mConfig == null || mConfig.shared == config.shared); 356 } 357 } 358 359 public WifiConfiguration getConfig() { 360 return mConfig; 361 } 362 363 public void clearConfig() { 364 mConfig = null; 365 networkId = WifiConfiguration.INVALID_NETWORK_ID; 366 } 367 368 public WifiInfo getInfo() { 369 return mInfo; 370 } 371 372 public int getLevel() { 373 if (!isReachable()) { 374 return -1; 375 } 376 return WifiManager.calculateSignalLevel(mRssi, SIGNAL_LEVELS); 377 } 378 379 public int getRssi() { 380 evictOldScanResults(); 381 int rssi = Integer.MIN_VALUE; 382 for (ScanResult result : mScanResultCache.values()) { 383 if (result.level > rssi) { 384 rssi = result.level; 385 } 386 } 387 388 return rssi; 389 } 390 391 public long getSeen() { 392 evictOldScanResults(); 393 long seen = 0; 394 for (ScanResult result : mScanResultCache.values()) { 395 if (result.timestamp > seen) { 396 seen = result.timestamp; 397 } 398 } 399 400 return seen; 401 } 402 403 public NetworkInfo getNetworkInfo() { 404 return mNetworkInfo; 405 } 406 407 public int getSecurity() { 408 return security; 409 } 410 411 public String getSecurityString(boolean concise) { 412 Context context = mContext; 413 if (mConfig != null && mConfig.isPasspoint()) { 414 return concise ? context.getString(R.string.wifi_security_short_eap) : 415 context.getString(R.string.wifi_security_eap); 416 } 417 switch(security) { 418 case SECURITY_EAP: 419 return concise ? context.getString(R.string.wifi_security_short_eap) : 420 context.getString(R.string.wifi_security_eap); 421 case SECURITY_PSK: 422 switch (pskType) { 423 case PSK_WPA: 424 return concise ? context.getString(R.string.wifi_security_short_wpa) : 425 context.getString(R.string.wifi_security_wpa); 426 case PSK_WPA2: 427 return concise ? context.getString(R.string.wifi_security_short_wpa2) : 428 context.getString(R.string.wifi_security_wpa2); 429 case PSK_WPA_WPA2: 430 return concise ? context.getString(R.string.wifi_security_short_wpa_wpa2) : 431 context.getString(R.string.wifi_security_wpa_wpa2); 432 case PSK_UNKNOWN: 433 default: 434 return concise ? context.getString(R.string.wifi_security_short_psk_generic) 435 : context.getString(R.string.wifi_security_psk_generic); 436 } 437 case SECURITY_WEP: 438 return concise ? context.getString(R.string.wifi_security_short_wep) : 439 context.getString(R.string.wifi_security_wep); 440 case SECURITY_NONE: 441 default: 442 return concise ? "" : context.getString(R.string.wifi_security_none); 443 } 444 } 445 446 public String getSsidStr() { 447 return ssid; 448 } 449 450 public String getBssid() { 451 return bssid; 452 } 453 454 public CharSequence getSsid() { 455 final SpannableString str = new SpannableString(ssid); 456 str.setSpan(new TtsSpan.TelephoneBuilder(ssid).build(), 0, ssid.length(), 457 Spannable.SPAN_INCLUSIVE_INCLUSIVE); 458 return str; 459 } 460 461 public String getConfigName() { 462 if (mConfig != null && mConfig.isPasspoint()) { 463 return mConfig.providerFriendlyName; 464 } else { 465 return ssid; 466 } 467 } 468 469 public DetailedState getDetailedState() { 470 if (mNetworkInfo != null) { 471 return mNetworkInfo.getDetailedState(); 472 } 473 Log.w(TAG, "NetworkInfo is null, cannot return detailed state"); 474 return null; 475 } 476 477 public String getSavedNetworkSummary() { 478 WifiConfiguration config = mConfig; 479 if (config != null) { 480 PackageManager pm = mContext.getPackageManager(); 481 String systemName = pm.getNameForUid(android.os.Process.SYSTEM_UID); 482 int userId = UserHandle.getUserId(config.creatorUid); 483 ApplicationInfo appInfo = null; 484 if (config.creatorName != null && config.creatorName.equals(systemName)) { 485 appInfo = mContext.getApplicationInfo(); 486 } else { 487 try { 488 IPackageManager ipm = AppGlobals.getPackageManager(); 489 appInfo = ipm.getApplicationInfo(config.creatorName, 0 /* flags */, userId); 490 } catch (RemoteException rex) { 491 } 492 } 493 if (appInfo != null && 494 !appInfo.packageName.equals(mContext.getString(R.string.settings_package)) && 495 !appInfo.packageName.equals( 496 mContext.getString(R.string.certinstaller_package))) { 497 return mContext.getString(R.string.saved_network, appInfo.loadLabel(pm)); 498 } 499 } 500 return ""; 501 } 502 503 public String getSummary() { 504 return getSettingsSummary(mConfig); 505 } 506 507 public String getSettingsSummary() { 508 return getSettingsSummary(mConfig); 509 } 510 511 private String getSettingsSummary(WifiConfiguration config) { 512 // Update to new summary 513 StringBuilder summary = new StringBuilder(); 514 515 if (isActive() && config != null && config.isPasspoint()) { 516 // This is the active connection on passpoint 517 summary.append(getSummary(mContext, getDetailedState(), 518 false, config.providerFriendlyName)); 519 } else if (isActive()) { 520 // This is the active connection on non-passpoint network 521 summary.append(getSummary(mContext, getDetailedState(), 522 mInfo != null && mInfo.isEphemeral())); 523 } else if (config != null && config.isPasspoint() 524 && config.getNetworkSelectionStatus().isNetworkEnabled()) { 525 String format = mContext.getString(R.string.available_via_passpoint); 526 summary.append(String.format(format, config.providerFriendlyName)); 527 } else if (config != null && config.hasNoInternetAccess()) { 528 int messageID = config.getNetworkSelectionStatus().isNetworkPermanentlyDisabled() 529 ? R.string.wifi_no_internet_no_reconnect 530 : R.string.wifi_no_internet; 531 summary.append(mContext.getString(messageID)); 532 } else if (config != null && !config.getNetworkSelectionStatus().isNetworkEnabled()) { 533 WifiConfiguration.NetworkSelectionStatus networkStatus = 534 config.getNetworkSelectionStatus(); 535 switch (networkStatus.getNetworkSelectionDisableReason()) { 536 case WifiConfiguration.NetworkSelectionStatus.DISABLED_AUTHENTICATION_FAILURE: 537 summary.append(mContext.getString(R.string.wifi_disabled_password_failure)); 538 break; 539 case WifiConfiguration.NetworkSelectionStatus.DISABLED_DHCP_FAILURE: 540 case WifiConfiguration.NetworkSelectionStatus.DISABLED_DNS_FAILURE: 541 summary.append(mContext.getString(R.string.wifi_disabled_network_failure)); 542 break; 543 case WifiConfiguration.NetworkSelectionStatus.DISABLED_ASSOCIATION_REJECTION: 544 summary.append(mContext.getString(R.string.wifi_disabled_generic)); 545 break; 546 } 547 } else if (config != null && config.getNetworkSelectionStatus().isNotRecommended()) { 548 summary.append(mContext.getString(R.string.wifi_disabled_by_recommendation_provider)); 549 } else if (!isReachable()) { // Wifi out of range 550 summary.append(mContext.getString(R.string.wifi_not_in_range)); 551 } else { // In range, not disabled. 552 if (config != null) { // Is saved network 553 summary.append(mContext.getString(R.string.wifi_remembered)); 554 } 555 } 556 557 if (WifiTracker.sVerboseLogging > 0) { 558 // Add RSSI/band information for this config, what was seen up to 6 seconds ago 559 // verbose WiFi Logging is only turned on thru developers settings 560 if (mInfo != null && mNetworkInfo != null) { // This is the active connection 561 summary.append(" f=" + Integer.toString(mInfo.getFrequency())); 562 } 563 summary.append(" " + getVisibilityStatus()); 564 if (config != null && !config.getNetworkSelectionStatus().isNetworkEnabled()) { 565 summary.append(" (" + config.getNetworkSelectionStatus().getNetworkStatusString()); 566 if (config.getNetworkSelectionStatus().getDisableTime() > 0) { 567 long now = System.currentTimeMillis(); 568 long diff = (now - config.getNetworkSelectionStatus().getDisableTime()) / 1000; 569 long sec = diff%60; //seconds 570 long min = (diff/60)%60; //minutes 571 long hour = (min/60)%60; //hours 572 summary.append(", "); 573 if (hour > 0) summary.append(Long.toString(hour) + "h "); 574 summary.append( Long.toString(min) + "m "); 575 summary.append( Long.toString(sec) + "s "); 576 } 577 summary.append(")"); 578 } 579 580 if (config != null) { 581 WifiConfiguration.NetworkSelectionStatus networkStatus = 582 config.getNetworkSelectionStatus(); 583 for (int index = WifiConfiguration.NetworkSelectionStatus.NETWORK_SELECTION_ENABLE; 584 index < WifiConfiguration.NetworkSelectionStatus 585 .NETWORK_SELECTION_DISABLED_MAX; index++) { 586 if (networkStatus.getDisableReasonCounter(index) != 0) { 587 summary.append(" " + WifiConfiguration.NetworkSelectionStatus 588 .getNetworkDisableReasonString(index) + "=" 589 + networkStatus.getDisableReasonCounter(index)); 590 } 591 } 592 } 593 } 594 return summary.toString(); 595 } 596 597 /** 598 * Returns the visibility status of the WifiConfiguration. 599 * 600 * @return autojoin debugging information 601 * TODO: use a string formatter 602 * ["rssi 5Ghz", "num results on 5GHz" / "rssi 5Ghz", "num results on 5GHz"] 603 * For instance [-40,5/-30,2] 604 */ 605 private String getVisibilityStatus() { 606 StringBuilder visibility = new StringBuilder(); 607 StringBuilder scans24GHz = null; 608 StringBuilder scans5GHz = null; 609 String bssid = null; 610 611 long now = System.currentTimeMillis(); 612 613 if (mInfo != null) { 614 bssid = mInfo.getBSSID(); 615 if (bssid != null) { 616 visibility.append(" ").append(bssid); 617 } 618 visibility.append(" rssi=").append(mInfo.getRssi()); 619 visibility.append(" "); 620 visibility.append(" score=").append(mInfo.score); 621 visibility.append(" rankingScore=").append(getRankingScore()); 622 visibility.append(" badge=").append(getBadge()); 623 visibility.append(String.format(" tx=%.1f,", mInfo.txSuccessRate)); 624 visibility.append(String.format("%.1f,", mInfo.txRetriesRate)); 625 visibility.append(String.format("%.1f ", mInfo.txBadRate)); 626 visibility.append(String.format("rx=%.1f", mInfo.rxSuccessRate)); 627 } 628 629 int rssi5 = WifiConfiguration.INVALID_RSSI; 630 int rssi24 = WifiConfiguration.INVALID_RSSI; 631 int num5 = 0; 632 int num24 = 0; 633 int numBlackListed = 0; 634 int n24 = 0; // Number scan results we included in the string 635 int n5 = 0; // Number scan results we included in the string 636 evictOldScanResults(); 637 // TODO: sort list by RSSI or age 638 for (ScanResult result : mScanResultCache.values()) { 639 640 if (result.frequency >= LOWER_FREQ_5GHZ 641 && result.frequency <= HIGHER_FREQ_5GHZ) { 642 // Strictly speaking: [4915, 5825] 643 // number of known BSSID on 5GHz band 644 num5 = num5 + 1; 645 } else if (result.frequency >= LOWER_FREQ_24GHZ 646 && result.frequency <= HIGHER_FREQ_24GHZ) { 647 // Strictly speaking: [2412, 2482] 648 // number of known BSSID on 2.4Ghz band 649 num24 = num24 + 1; 650 } 651 652 653 if (result.frequency >= LOWER_FREQ_5GHZ 654 && result.frequency <= HIGHER_FREQ_5GHZ) { 655 if (result.level > rssi5) { 656 rssi5 = result.level; 657 } 658 if (n5 < 4) { 659 if (scans5GHz == null) scans5GHz = new StringBuilder(); 660 scans5GHz.append(" \n{").append(result.BSSID); 661 if (bssid != null && result.BSSID.equals(bssid)) scans5GHz.append("*"); 662 scans5GHz.append("=").append(result.frequency); 663 scans5GHz.append(",").append(result.level); 664 scans5GHz.append("}"); 665 n5++; 666 } 667 } else if (result.frequency >= LOWER_FREQ_24GHZ 668 && result.frequency <= HIGHER_FREQ_24GHZ) { 669 if (result.level > rssi24) { 670 rssi24 = result.level; 671 } 672 if (n24 < 4) { 673 if (scans24GHz == null) scans24GHz = new StringBuilder(); 674 scans24GHz.append(" \n{").append(result.BSSID); 675 if (bssid != null && result.BSSID.equals(bssid)) scans24GHz.append("*"); 676 scans24GHz.append("=").append(result.frequency); 677 scans24GHz.append(",").append(result.level); 678 scans24GHz.append("}"); 679 n24++; 680 } 681 } 682 } 683 visibility.append(" ["); 684 if (num24 > 0) { 685 visibility.append("(").append(num24).append(")"); 686 if (n24 <= 4) { 687 if (scans24GHz != null) { 688 visibility.append(scans24GHz.toString()); 689 } 690 } else { 691 visibility.append("max=").append(rssi24); 692 if (scans24GHz != null) { 693 visibility.append(",").append(scans24GHz.toString()); 694 } 695 } 696 } 697 visibility.append(";"); 698 if (num5 > 0) { 699 visibility.append("(").append(num5).append(")"); 700 if (n5 <= 4) { 701 if (scans5GHz != null) { 702 visibility.append(scans5GHz.toString()); 703 } 704 } else { 705 visibility.append("max=").append(rssi5); 706 if (scans5GHz != null) { 707 visibility.append(",").append(scans5GHz.toString()); 708 } 709 } 710 } 711 if (numBlackListed > 0) 712 visibility.append("!").append(numBlackListed); 713 visibility.append("]"); 714 715 return visibility.toString(); 716 } 717 718 /** 719 * Return whether this is the active connection. 720 * For ephemeral connections (networkId is invalid), this returns false if the network is 721 * disconnected. 722 */ 723 public boolean isActive() { 724 return mNetworkInfo != null && 725 (networkId != WifiConfiguration.INVALID_NETWORK_ID || 726 mNetworkInfo.getState() != State.DISCONNECTED); 727 } 728 729 public boolean isConnectable() { 730 return getLevel() != -1 && getDetailedState() == null; 731 } 732 733 public boolean isEphemeral() { 734 return mInfo != null && mInfo.isEphemeral() && 735 mNetworkInfo != null && mNetworkInfo.getState() != State.DISCONNECTED; 736 } 737 738 public boolean isPasspoint() { 739 return mConfig != null && mConfig.isPasspoint(); 740 } 741 742 /** 743 * Return whether the given {@link WifiInfo} is for this access point. 744 * If the current AP does not have a network Id then the config is used to 745 * match based on SSID and security. 746 */ 747 private boolean isInfoForThisAccessPoint(WifiConfiguration config, WifiInfo info) { 748 if (isPasspoint() == false && networkId != WifiConfiguration.INVALID_NETWORK_ID) { 749 return networkId == info.getNetworkId(); 750 } else if (config != null) { 751 return matches(config); 752 } 753 else { 754 // Might be an ephemeral connection with no WifiConfiguration. Try matching on SSID. 755 // (Note that we only do this if the WifiConfiguration explicitly equals INVALID). 756 // TODO: Handle hex string SSIDs. 757 return ssid.equals(removeDoubleQuotes(info.getSSID())); 758 } 759 } 760 761 public boolean isSaved() { 762 return networkId != WifiConfiguration.INVALID_NETWORK_ID; 763 } 764 765 public Object getTag() { 766 return mTag; 767 } 768 769 public void setTag(Object tag) { 770 mTag = tag; 771 } 772 773 /** 774 * Generate and save a default wifiConfiguration with common values. 775 * Can only be called for unsecured networks. 776 */ 777 public void generateOpenNetworkConfig() { 778 if (security != SECURITY_NONE) 779 throw new IllegalStateException(); 780 if (mConfig != null) 781 return; 782 mConfig = new WifiConfiguration(); 783 mConfig.SSID = AccessPoint.convertToQuotedString(ssid); 784 mConfig.allowedKeyManagement.set(KeyMgmt.NONE); 785 } 786 787 void loadConfig(WifiConfiguration config) { 788 ssid = (config.SSID == null ? "" : removeDoubleQuotes(config.SSID)); 789 bssid = config.BSSID; 790 security = getSecurity(config); 791 networkId = config.networkId; 792 mConfig = config; 793 } 794 795 private void initWithScanResult(ScanResult result) { 796 ssid = result.SSID; 797 bssid = result.BSSID; 798 security = getSecurity(result); 799 if (security == SECURITY_PSK) 800 pskType = getPskType(result); 801 mRssi = result.level; 802 mSeen = result.timestamp; 803 } 804 805 public void saveWifiState(Bundle savedState) { 806 if (ssid != null) savedState.putString(KEY_SSID, getSsidStr()); 807 savedState.putInt(KEY_SECURITY, security); 808 savedState.putInt(KEY_PSKTYPE, pskType); 809 if (mConfig != null) savedState.putParcelable(KEY_CONFIG, mConfig); 810 savedState.putParcelable(KEY_WIFIINFO, mInfo); 811 evictOldScanResults(); 812 savedState.putParcelableArrayList(KEY_SCANRESULTCACHE, 813 new ArrayList<ScanResult>(mScanResultCache.values())); 814 if (mNetworkInfo != null) { 815 savedState.putParcelable(KEY_NETWORKINFO, mNetworkInfo); 816 } 817 } 818 819 public void setListener(AccessPointListener listener) { 820 mAccessPointListener = listener; 821 } 822 823 boolean update(ScanResult result) { 824 if (matches(result)) { 825 /* Add or update the scan result for the BSSID */ 826 mScanResultCache.put(result.BSSID, result); 827 828 int oldLevel = getLevel(); 829 int oldRssi = getRssi(); 830 mSeen = getSeen(); 831 mRssi = (getRssi() + oldRssi)/2; 832 int newLevel = getLevel(); 833 834 if (newLevel > 0 && newLevel != oldLevel && mAccessPointListener != null) { 835 mAccessPointListener.onLevelChanged(this); 836 } 837 // This flag only comes from scans, is not easily saved in config 838 if (security == SECURITY_PSK) { 839 pskType = getPskType(result); 840 } 841 842 if (mAccessPointListener != null) { 843 mAccessPointListener.onAccessPointChanged(this); 844 } 845 846 return true; 847 } 848 return false; 849 } 850 851 public boolean update(WifiConfiguration config, WifiInfo info, NetworkInfo networkInfo) { 852 boolean reorder = false; 853 if (info != null && isInfoForThisAccessPoint(config, info)) { 854 reorder = (mInfo == null); 855 mRssi = info.getRssi(); 856 mInfo = info; 857 mNetworkInfo = networkInfo; 858 if (mAccessPointListener != null) { 859 mAccessPointListener.onAccessPointChanged(this); 860 } 861 } else if (mInfo != null) { 862 reorder = true; 863 mInfo = null; 864 mNetworkInfo = null; 865 if (mAccessPointListener != null) { 866 mAccessPointListener.onAccessPointChanged(this); 867 } 868 } 869 return reorder; 870 } 871 872 void update(WifiConfiguration config) { 873 mConfig = config; 874 networkId = config.networkId; 875 if (mAccessPointListener != null) { 876 mAccessPointListener.onAccessPointChanged(this); 877 } 878 } 879 880 void setRssi(int rssi) { 881 mRssi = rssi; 882 } 883 884 int getRankingScore() { 885 return mRankingScore; 886 } 887 888 int getBadge() { 889 return mBadge; 890 } 891 892 /** Return true if the current RSSI is reachable, and false otherwise. */ 893 boolean isReachable() { 894 return mRssi != UNREACHABLE_RSSI; 895 } 896 897 public static String getSummary(Context context, String ssid, DetailedState state, 898 boolean isEphemeral, String passpointProvider) { 899 if (state == DetailedState.CONNECTED && ssid == null) { 900 if (TextUtils.isEmpty(passpointProvider) == false) { 901 // Special case for connected + passpoint networks. 902 String format = context.getString(R.string.connected_via_passpoint); 903 return String.format(format, passpointProvider); 904 } else if (isEphemeral) { 905 // Special case for connected + ephemeral networks. 906 return context.getString(R.string.connected_via_wfa); 907 } 908 } 909 910 // Case when there is wifi connected without internet connectivity. 911 final ConnectivityManager cm = (ConnectivityManager) 912 context.getSystemService(Context.CONNECTIVITY_SERVICE); 913 if (state == DetailedState.CONNECTED) { 914 IWifiManager wifiManager = IWifiManager.Stub.asInterface( 915 ServiceManager.getService(Context.WIFI_SERVICE)); 916 NetworkCapabilities nc = null; 917 918 try { 919 nc = cm.getNetworkCapabilities(wifiManager.getCurrentNetwork()); 920 } catch (RemoteException e) {} 921 922 if (nc != null) { 923 if (nc.hasCapability(nc.NET_CAPABILITY_CAPTIVE_PORTAL)) { 924 return context.getString( 925 com.android.internal.R.string.network_available_sign_in); 926 } else if (!nc.hasCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED)) { 927 return context.getString(R.string.wifi_connected_no_internet); 928 } 929 } 930 } 931 if (state == null) { 932 Log.w(TAG, "state is null, returning empty summary"); 933 return ""; 934 } 935 String[] formats = context.getResources().getStringArray((ssid == null) 936 ? R.array.wifi_status : R.array.wifi_status_with_ssid); 937 int index = state.ordinal(); 938 939 if (index >= formats.length || formats[index].length() == 0) { 940 return ""; 941 } 942 return String.format(formats[index], ssid); 943 } 944 945 public static String getSummary(Context context, DetailedState state, boolean isEphemeral) { 946 return getSummary(context, null, state, isEphemeral, null); 947 } 948 949 public static String getSummary(Context context, DetailedState state, boolean isEphemeral, 950 String passpointProvider) { 951 return getSummary(context, null, state, isEphemeral, passpointProvider); 952 } 953 954 public static String convertToQuotedString(String string) { 955 return "\"" + string + "\""; 956 } 957 958 private static int getPskType(ScanResult result) { 959 boolean wpa = result.capabilities.contains("WPA-PSK"); 960 boolean wpa2 = result.capabilities.contains("WPA2-PSK"); 961 if (wpa2 && wpa) { 962 return PSK_WPA_WPA2; 963 } else if (wpa2) { 964 return PSK_WPA2; 965 } else if (wpa) { 966 return PSK_WPA; 967 } else { 968 Log.w(TAG, "Received abnormal flag string: " + result.capabilities); 969 return PSK_UNKNOWN; 970 } 971 } 972 973 private static int getSecurity(ScanResult result) { 974 if (result.capabilities.contains("WEP")) { 975 return SECURITY_WEP; 976 } else if (result.capabilities.contains("PSK")) { 977 return SECURITY_PSK; 978 } else if (result.capabilities.contains("EAP")) { 979 return SECURITY_EAP; 980 } 981 return SECURITY_NONE; 982 } 983 984 static int getSecurity(WifiConfiguration config) { 985 if (config.allowedKeyManagement.get(KeyMgmt.WPA_PSK)) { 986 return SECURITY_PSK; 987 } 988 if (config.allowedKeyManagement.get(KeyMgmt.WPA_EAP) || 989 config.allowedKeyManagement.get(KeyMgmt.IEEE8021X)) { 990 return SECURITY_EAP; 991 } 992 return (config.wepKeys[0] != null) ? SECURITY_WEP : SECURITY_NONE; 993 } 994 995 public static String securityToString(int security, int pskType) { 996 if (security == SECURITY_WEP) { 997 return "WEP"; 998 } else if (security == SECURITY_PSK) { 999 if (pskType == PSK_WPA) { 1000 return "WPA"; 1001 } else if (pskType == PSK_WPA2) { 1002 return "WPA2"; 1003 } else if (pskType == PSK_WPA_WPA2) { 1004 return "WPA_WPA2"; 1005 } 1006 return "PSK"; 1007 } else if (security == SECURITY_EAP) { 1008 return "EAP"; 1009 } 1010 return "NONE"; 1011 } 1012 1013 static String removeDoubleQuotes(String string) { 1014 if (TextUtils.isEmpty(string)) { 1015 return ""; 1016 } 1017 int length = string.length(); 1018 if ((length > 1) && (string.charAt(0) == '"') 1019 && (string.charAt(length - 1) == '"')) { 1020 return string.substring(1, length - 1); 1021 } 1022 return string; 1023 } 1024 1025 public interface AccessPointListener { 1026 void onAccessPointChanged(AccessPoint accessPoint); 1027 void onLevelChanged(AccessPoint accessPoint); 1028 } 1029} 1030