AccessPoint.java revision 68457bfc1ef60ee69b66e64748713ddf4e6bbf7d
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.Network; 26import android.net.NetworkCapabilities; 27import android.net.NetworkInfo; 28import android.net.NetworkInfo.DetailedState; 29import android.net.NetworkInfo.State; 30import android.net.wifi.IWifiManager; 31import android.net.wifi.ScanResult; 32import android.net.wifi.WifiConfiguration; 33import android.net.wifi.WifiConfiguration.KeyMgmt; 34import android.net.wifi.WifiInfo; 35import android.net.wifi.WifiManager; 36import android.os.Bundle; 37import android.os.RemoteException; 38import android.os.ServiceManager; 39import android.os.SystemClock; 40import android.os.UserHandle; 41import android.support.annotation.NonNull; 42import android.text.Spannable; 43import android.text.SpannableString; 44import android.text.TextUtils; 45import android.text.style.TtsSpan; 46import android.util.Log; 47 48import com.android.settingslib.R; 49 50import java.util.ArrayList; 51import java.util.Iterator; 52import java.util.concurrent.ConcurrentHashMap; 53import java.util.concurrent.atomic.AtomicInteger; 54 55 56public class AccessPoint implements Comparable<AccessPoint> { 57 static final String TAG = "SettingsLib.AccessPoint"; 58 59 /** 60 * Lower bound on the 2.4 GHz (802.11b/g/n) WLAN channels 61 */ 62 public static final int LOWER_FREQ_24GHZ = 2400; 63 64 /** 65 * Upper bound on the 2.4 GHz (802.11b/g/n) WLAN channels 66 */ 67 public static final int HIGHER_FREQ_24GHZ = 2500; 68 69 /** 70 * Lower bound on the 5.0 GHz (802.11a/h/j/n/ac) WLAN channels 71 */ 72 public static final int LOWER_FREQ_5GHZ = 4900; 73 74 /** 75 * Upper bound on the 5.0 GHz (802.11a/h/j/n/ac) WLAN channels 76 */ 77 public static final int HIGHER_FREQ_5GHZ = 5900; 78 79 80 /** 81 * Experimental: we should be able to show the user the list of BSSIDs and bands 82 * for that SSID. 83 * For now this data is used only with Verbose Logging so as to show the band and number 84 * of BSSIDs on which that network is seen. 85 */ 86 private final ConcurrentHashMap<String, ScanResult> mScanResultCache = 87 new ConcurrentHashMap<String, ScanResult>(32); 88 private static final long MAX_SCAN_RESULT_AGE_MS = 15000; 89 90 private static final String KEY_NETWORKINFO = "key_networkinfo"; 91 private static final String KEY_WIFIINFO = "key_wifiinfo"; 92 private static final String KEY_SCANRESULT = "key_scanresult"; 93 private static final String KEY_SSID = "key_ssid"; 94 private static final String KEY_SECURITY = "key_security"; 95 private static final String KEY_PSKTYPE = "key_psktype"; 96 private static final String KEY_SCANRESULTCACHE = "key_scanresultcache"; 97 private static final String KEY_CONFIG = "key_config"; 98 private static final AtomicInteger sLastId = new AtomicInteger(0); 99 100 /** 101 * These values are matched in string arrays -- changes must be kept in sync 102 */ 103 public static final int SECURITY_NONE = 0; 104 public static final int SECURITY_WEP = 1; 105 public static final int SECURITY_PSK = 2; 106 public static final int SECURITY_EAP = 3; 107 108 private static final int PSK_UNKNOWN = 0; 109 private static final int PSK_WPA = 1; 110 private static final int PSK_WPA2 = 2; 111 private static final int PSK_WPA_WPA2 = 3; 112 113 public static final int SIGNAL_LEVELS = 4; 114 115 private final Context mContext; 116 117 private String ssid; 118 private String bssid; 119 private int security; 120 private int networkId = WifiConfiguration.INVALID_NETWORK_ID; 121 122 private int pskType = PSK_UNKNOWN; 123 124 private WifiConfiguration mConfig; 125 126 private int mRssi = Integer.MAX_VALUE; 127 private long mSeen = 0; 128 129 private WifiInfo mInfo; 130 private NetworkInfo mNetworkInfo; 131 AccessPointListener mAccessPointListener; 132 133 private Object mTag; 134 135 // used to co-relate internal vs returned accesspoint. 136 int mId; 137 138 public AccessPoint(Context context, Bundle savedState) { 139 mContext = context; 140 mConfig = savedState.getParcelable(KEY_CONFIG); 141 if (mConfig != null) { 142 loadConfig(mConfig); 143 } 144 if (savedState.containsKey(KEY_SSID)) { 145 ssid = savedState.getString(KEY_SSID); 146 } 147 if (savedState.containsKey(KEY_SECURITY)) { 148 security = savedState.getInt(KEY_SECURITY); 149 } 150 if (savedState.containsKey(KEY_PSKTYPE)) { 151 pskType = savedState.getInt(KEY_PSKTYPE); 152 } 153 mInfo = (WifiInfo) savedState.getParcelable(KEY_WIFIINFO); 154 if (savedState.containsKey(KEY_NETWORKINFO)) { 155 mNetworkInfo = savedState.getParcelable(KEY_NETWORKINFO); 156 } 157 if (savedState.containsKey(KEY_SCANRESULTCACHE)) { 158 ArrayList<ScanResult> scanResultArrayList = 159 savedState.getParcelableArrayList(KEY_SCANRESULTCACHE); 160 mScanResultCache.clear(); 161 for (ScanResult result : scanResultArrayList) { 162 mScanResultCache.put(result.BSSID, result); 163 } 164 } 165 update(mConfig, mInfo, mNetworkInfo); 166 mRssi = getRssi(); 167 mSeen = getSeen(); 168 mId = sLastId.incrementAndGet(); 169 } 170 171 AccessPoint(Context context, ScanResult result) { 172 mContext = context; 173 initWithScanResult(result); 174 mId = sLastId.incrementAndGet(); 175 } 176 177 AccessPoint(Context context, WifiConfiguration config) { 178 mContext = context; 179 loadConfig(config); 180 mId = sLastId.incrementAndGet(); 181 } 182 183 AccessPoint(Context context, AccessPoint other) { 184 mContext = context; 185 copyFrom(other); 186 } 187 188 /** 189 * Copy accesspoint information. NOTE: We do not copy tag information because that is never 190 * set on the internal copy. 191 * @param that 192 */ 193 void copyFrom(AccessPoint that) { 194 that.evictOldScanResults(); 195 this.ssid = that.ssid; 196 this.bssid = that.bssid; 197 this.security = that.security; 198 this.networkId = that.networkId; 199 this.pskType = that.pskType; 200 this.mConfig = that.mConfig; //TODO: Watch out, this object is mutated. 201 this.mRssi = that.mRssi; 202 this.mSeen = that.mSeen; 203 this.mInfo = that.mInfo; 204 this.mNetworkInfo = that.mNetworkInfo; 205 this.mScanResultCache.clear(); 206 this.mScanResultCache.putAll(that.mScanResultCache); 207 this.mId = that.mId; 208 } 209 210 @Override 211 public int compareTo(@NonNull AccessPoint other) { 212 // Active one goes first. 213 if (isActive() && !other.isActive()) return -1; 214 if (!isActive() && other.isActive()) return 1; 215 216 // Reachable one goes before unreachable one. 217 if (mRssi != Integer.MAX_VALUE && other.mRssi == Integer.MAX_VALUE) return -1; 218 if (mRssi == Integer.MAX_VALUE && other.mRssi != Integer.MAX_VALUE) return 1; 219 220 // Configured one goes before unconfigured one. 221 if (networkId != WifiConfiguration.INVALID_NETWORK_ID 222 && other.networkId == WifiConfiguration.INVALID_NETWORK_ID) return -1; 223 if (networkId == WifiConfiguration.INVALID_NETWORK_ID 224 && other.networkId != WifiConfiguration.INVALID_NETWORK_ID) return 1; 225 226 // Sort by signal strength, bucketed by level 227 int difference = WifiManager.calculateSignalLevel(other.mRssi, SIGNAL_LEVELS) 228 - WifiManager.calculateSignalLevel(mRssi, SIGNAL_LEVELS); 229 if (difference != 0) { 230 return difference; 231 } 232 // Sort by ssid. 233 return ssid.compareToIgnoreCase(other.ssid); 234 } 235 236 @Override 237 public boolean equals(Object other) { 238 if (!(other instanceof AccessPoint)) return false; 239 return (this.compareTo((AccessPoint) other) == 0); 240 } 241 242 @Override 243 public int hashCode() { 244 int result = 0; 245 if (mInfo != null) result += 13 * mInfo.hashCode(); 246 result += 19 * mRssi; 247 result += 23 * networkId; 248 result += 29 * ssid.hashCode(); 249 return result; 250 } 251 252 @Override 253 public String toString() { 254 StringBuilder builder = new StringBuilder().append("AccessPoint(") 255 .append(ssid); 256 if (isSaved()) { 257 builder.append(',').append("saved"); 258 } 259 if (isActive()) { 260 builder.append(',').append("active"); 261 } 262 if (isEphemeral()) { 263 builder.append(',').append("ephemeral"); 264 } 265 if (isConnectable()) { 266 builder.append(',').append("connectable"); 267 } 268 if (security != SECURITY_NONE) { 269 builder.append(',').append(securityToString(security, pskType)); 270 } 271 return builder.append(')').toString(); 272 } 273 274 private void evictOldScanResults() { 275 long nowMs = SystemClock.elapsedRealtime(); 276 for (Iterator<ScanResult> iter = mScanResultCache.values().iterator(); iter.hasNext(); ) { 277 ScanResult result = iter.next(); 278 // result timestamp is in microseconds 279 if (nowMs - result.timestamp / 1000 > MAX_SCAN_RESULT_AGE_MS) { 280 iter.remove(); 281 } 282 } 283 } 284 285 public boolean matches(ScanResult result) { 286 return ssid.equals(result.SSID) && security == getSecurity(result); 287 } 288 289 public boolean matches(WifiConfiguration config) { 290 if (config.isPasspoint() && mConfig != null && mConfig.isPasspoint()) { 291 return config.FQDN.equals(mConfig.FQDN); 292 } else { 293 return ssid.equals(removeDoubleQuotes(config.SSID)) 294 && security == getSecurity(config) 295 && (mConfig == null || mConfig.shared == config.shared); 296 } 297 } 298 299 public WifiConfiguration getConfig() { 300 return mConfig; 301 } 302 303 public void clearConfig() { 304 mConfig = null; 305 networkId = WifiConfiguration.INVALID_NETWORK_ID; 306 } 307 308 public WifiInfo getInfo() { 309 return mInfo; 310 } 311 312 public int getLevel() { 313 if (mRssi == Integer.MAX_VALUE) { 314 return -1; 315 } 316 return WifiManager.calculateSignalLevel(mRssi, SIGNAL_LEVELS); 317 } 318 319 public int getRssi() { 320 evictOldScanResults(); 321 int rssi = Integer.MIN_VALUE; 322 for (ScanResult result : mScanResultCache.values()) { 323 if (result.level > rssi) { 324 rssi = result.level; 325 } 326 } 327 328 return rssi; 329 } 330 331 public long getSeen() { 332 evictOldScanResults(); 333 long seen = 0; 334 for (ScanResult result : mScanResultCache.values()) { 335 if (result.timestamp > seen) { 336 seen = result.timestamp; 337 } 338 } 339 340 return seen; 341 } 342 343 public NetworkInfo getNetworkInfo() { 344 return mNetworkInfo; 345 } 346 347 public int getSecurity() { 348 return security; 349 } 350 351 public String getSecurityString(boolean concise) { 352 Context context = mContext; 353 if (mConfig != null && mConfig.isPasspoint()) { 354 return concise ? context.getString(R.string.wifi_security_short_eap) : 355 context.getString(R.string.wifi_security_eap); 356 } 357 switch(security) { 358 case SECURITY_EAP: 359 return concise ? context.getString(R.string.wifi_security_short_eap) : 360 context.getString(R.string.wifi_security_eap); 361 case SECURITY_PSK: 362 switch (pskType) { 363 case PSK_WPA: 364 return concise ? context.getString(R.string.wifi_security_short_wpa) : 365 context.getString(R.string.wifi_security_wpa); 366 case PSK_WPA2: 367 return concise ? context.getString(R.string.wifi_security_short_wpa2) : 368 context.getString(R.string.wifi_security_wpa2); 369 case PSK_WPA_WPA2: 370 return concise ? context.getString(R.string.wifi_security_short_wpa_wpa2) : 371 context.getString(R.string.wifi_security_wpa_wpa2); 372 case PSK_UNKNOWN: 373 default: 374 return concise ? context.getString(R.string.wifi_security_short_psk_generic) 375 : context.getString(R.string.wifi_security_psk_generic); 376 } 377 case SECURITY_WEP: 378 return concise ? context.getString(R.string.wifi_security_short_wep) : 379 context.getString(R.string.wifi_security_wep); 380 case SECURITY_NONE: 381 default: 382 return concise ? "" : context.getString(R.string.wifi_security_none); 383 } 384 } 385 386 public String getSsidStr() { 387 return ssid; 388 } 389 390 public String getBssid() { 391 return bssid; 392 } 393 394 public CharSequence getSsid() { 395 final SpannableString str = new SpannableString(ssid); 396 str.setSpan(new TtsSpan.TelephoneBuilder(ssid).build(), 0, ssid.length(), 397 Spannable.SPAN_INCLUSIVE_INCLUSIVE); 398 return str; 399 } 400 401 public String getConfigName() { 402 if (mConfig != null && mConfig.isPasspoint()) { 403 return mConfig.providerFriendlyName; 404 } else { 405 return ssid; 406 } 407 } 408 409 public DetailedState getDetailedState() { 410 if (mNetworkInfo != null) { 411 return mNetworkInfo.getDetailedState(); 412 } 413 Log.w(TAG, "NetworkInfo is null, cannot return detailed state"); 414 return null; 415 } 416 417 public String getSavedNetworkSummary() { 418 WifiConfiguration config = mConfig; 419 if (config != null) { 420 PackageManager pm = mContext.getPackageManager(); 421 String systemName = pm.getNameForUid(android.os.Process.SYSTEM_UID); 422 int userId = UserHandle.getUserId(config.creatorUid); 423 ApplicationInfo appInfo = null; 424 if (config.creatorName != null && config.creatorName.equals(systemName)) { 425 appInfo = mContext.getApplicationInfo(); 426 } else { 427 try { 428 IPackageManager ipm = AppGlobals.getPackageManager(); 429 appInfo = ipm.getApplicationInfo(config.creatorName, 0 /* flags */, userId); 430 } catch (RemoteException rex) { 431 } 432 } 433 if (appInfo != null && 434 !appInfo.packageName.equals(mContext.getString(R.string.settings_package)) && 435 !appInfo.packageName.equals( 436 mContext.getString(R.string.certinstaller_package))) { 437 return mContext.getString(R.string.saved_network, appInfo.loadLabel(pm)); 438 } 439 } 440 return ""; 441 } 442 443 public String getSummary() { 444 return getSettingsSummary(mConfig); 445 } 446 447 public String getSettingsSummary() { 448 return getSettingsSummary(mConfig); 449 } 450 451 private String getSettingsSummary(WifiConfiguration config) { 452 // Update to new summary 453 StringBuilder summary = new StringBuilder(); 454 455 if (isActive() && config != null && config.isPasspoint()) { 456 // This is the active connection on passpoint 457 summary.append(getSummary(mContext, getDetailedState(), 458 false, config.providerFriendlyName)); 459 } else if (isActive()) { 460 // This is the active connection on non-passpoint network 461 summary.append(getSummary(mContext, getDetailedState(), 462 mInfo != null && mInfo.isEphemeral())); 463 } else if (config != null && config.isPasspoint()) { 464 String format = mContext.getString(R.string.available_via_passpoint); 465 summary.append(String.format(format, config.providerFriendlyName)); 466 } else if (config != null && config.hasNoInternetAccess()) { 467 int messageID = config.getNetworkSelectionStatus().isNetworkPermanentlyDisabled() 468 ? R.string.wifi_no_internet_no_reconnect 469 : R.string.wifi_no_internet; 470 summary.append(mContext.getString(messageID)); 471 } else if (config != null && !config.getNetworkSelectionStatus().isNetworkEnabled()) { 472 WifiConfiguration.NetworkSelectionStatus networkStatus = 473 config.getNetworkSelectionStatus(); 474 switch (networkStatus.getNetworkSelectionDisableReason()) { 475 case WifiConfiguration.NetworkSelectionStatus.DISABLED_AUTHENTICATION_FAILURE: 476 summary.append(mContext.getString(R.string.wifi_disabled_password_failure)); 477 break; 478 case WifiConfiguration.NetworkSelectionStatus.DISABLED_DHCP_FAILURE: 479 case WifiConfiguration.NetworkSelectionStatus.DISABLED_DNS_FAILURE: 480 summary.append(mContext.getString(R.string.wifi_disabled_network_failure)); 481 break; 482 case WifiConfiguration.NetworkSelectionStatus.DISABLED_ASSOCIATION_REJECTION: 483 summary.append(mContext.getString(R.string.wifi_disabled_generic)); 484 break; 485 } 486 } else if (mRssi == Integer.MAX_VALUE) { // Wifi out of range 487 summary.append(mContext.getString(R.string.wifi_not_in_range)); 488 } else { // In range, not disabled. 489 if (config != null) { // Is saved network 490 summary.append(mContext.getString(R.string.wifi_remembered)); 491 } 492 } 493 494 if (WifiTracker.sVerboseLogging > 0) { 495 // Add RSSI/band information for this config, what was seen up to 6 seconds ago 496 // verbose WiFi Logging is only turned on thru developers settings 497 if (mInfo != null && mNetworkInfo != null) { // This is the active connection 498 summary.append(" f=" + Integer.toString(mInfo.getFrequency())); 499 } 500 summary.append(" " + getVisibilityStatus()); 501 if (config != null && !config.getNetworkSelectionStatus().isNetworkEnabled()) { 502 summary.append(" (" + config.getNetworkSelectionStatus().getNetworkStatusString()); 503 if (config.getNetworkSelectionStatus().getDisableTime() > 0) { 504 long now = System.currentTimeMillis(); 505 long diff = (now - config.getNetworkSelectionStatus().getDisableTime()) / 1000; 506 long sec = diff%60; //seconds 507 long min = (diff/60)%60; //minutes 508 long hour = (min/60)%60; //hours 509 summary.append(", "); 510 if (hour > 0) summary.append(Long.toString(hour) + "h "); 511 summary.append( Long.toString(min) + "m "); 512 summary.append( Long.toString(sec) + "s "); 513 } 514 summary.append(")"); 515 } 516 517 if (config != null) { 518 WifiConfiguration.NetworkSelectionStatus networkStatus = 519 config.getNetworkSelectionStatus(); 520 for (int index = WifiConfiguration.NetworkSelectionStatus.NETWORK_SELECTION_ENABLE; 521 index < WifiConfiguration.NetworkSelectionStatus 522 .NETWORK_SELECTION_DISABLED_MAX; index++) { 523 if (networkStatus.getDisableReasonCounter(index) != 0) { 524 summary.append(" " + WifiConfiguration.NetworkSelectionStatus 525 .getNetworkDisableReasonString(index) + "=" 526 + networkStatus.getDisableReasonCounter(index)); 527 } 528 } 529 } 530 } 531 return summary.toString(); 532 } 533 534 /** 535 * Returns the visibility status of the WifiConfiguration. 536 * 537 * @return autojoin debugging information 538 * TODO: use a string formatter 539 * ["rssi 5Ghz", "num results on 5GHz" / "rssi 5Ghz", "num results on 5GHz"] 540 * For instance [-40,5/-30,2] 541 */ 542 private String getVisibilityStatus() { 543 StringBuilder visibility = new StringBuilder(); 544 StringBuilder scans24GHz = null; 545 StringBuilder scans5GHz = null; 546 String bssid = null; 547 548 long now = System.currentTimeMillis(); 549 550 if (mInfo != null) { 551 bssid = mInfo.getBSSID(); 552 if (bssid != null) { 553 visibility.append(" ").append(bssid); 554 } 555 visibility.append(" rssi=").append(mInfo.getRssi()); 556 visibility.append(" "); 557 visibility.append(" score=").append(mInfo.score); 558 visibility.append(String.format(" tx=%.1f,", mInfo.txSuccessRate)); 559 visibility.append(String.format("%.1f,", mInfo.txRetriesRate)); 560 visibility.append(String.format("%.1f ", mInfo.txBadRate)); 561 visibility.append(String.format("rx=%.1f", mInfo.rxSuccessRate)); 562 } 563 564 int rssi5 = WifiConfiguration.INVALID_RSSI; 565 int rssi24 = WifiConfiguration.INVALID_RSSI; 566 int num5 = 0; 567 int num24 = 0; 568 int numBlackListed = 0; 569 int n24 = 0; // Number scan results we included in the string 570 int n5 = 0; // Number scan results we included in the string 571 evictOldScanResults(); 572 // TODO: sort list by RSSI or age 573 for (ScanResult result : mScanResultCache.values()) { 574 575 if (result.frequency >= LOWER_FREQ_5GHZ 576 && result.frequency <= HIGHER_FREQ_5GHZ) { 577 // Strictly speaking: [4915, 5825] 578 // number of known BSSID on 5GHz band 579 num5 = num5 + 1; 580 } else if (result.frequency >= LOWER_FREQ_24GHZ 581 && result.frequency <= HIGHER_FREQ_24GHZ) { 582 // Strictly speaking: [2412, 2482] 583 // number of known BSSID on 2.4Ghz band 584 num24 = num24 + 1; 585 } 586 587 588 if (result.frequency >= LOWER_FREQ_5GHZ 589 && result.frequency <= HIGHER_FREQ_5GHZ) { 590 if (result.level > rssi5) { 591 rssi5 = result.level; 592 } 593 if (n5 < 4) { 594 if (scans5GHz == null) scans5GHz = new StringBuilder(); 595 scans5GHz.append(" \n{").append(result.BSSID); 596 if (bssid != null && result.BSSID.equals(bssid)) scans5GHz.append("*"); 597 scans5GHz.append("=").append(result.frequency); 598 scans5GHz.append(",").append(result.level); 599 scans5GHz.append("}"); 600 n5++; 601 } 602 } else if (result.frequency >= LOWER_FREQ_24GHZ 603 && result.frequency <= HIGHER_FREQ_24GHZ) { 604 if (result.level > rssi24) { 605 rssi24 = result.level; 606 } 607 if (n24 < 4) { 608 if (scans24GHz == null) scans24GHz = new StringBuilder(); 609 scans24GHz.append(" \n{").append(result.BSSID); 610 if (bssid != null && result.BSSID.equals(bssid)) scans24GHz.append("*"); 611 scans24GHz.append("=").append(result.frequency); 612 scans24GHz.append(",").append(result.level); 613 scans24GHz.append("}"); 614 n24++; 615 } 616 } 617 } 618 visibility.append(" ["); 619 if (num24 > 0) { 620 visibility.append("(").append(num24).append(")"); 621 if (n24 <= 4) { 622 if (scans24GHz != null) { 623 visibility.append(scans24GHz.toString()); 624 } 625 } else { 626 visibility.append("max=").append(rssi24); 627 if (scans24GHz != null) { 628 visibility.append(",").append(scans24GHz.toString()); 629 } 630 } 631 } 632 visibility.append(";"); 633 if (num5 > 0) { 634 visibility.append("(").append(num5).append(")"); 635 if (n5 <= 4) { 636 if (scans5GHz != null) { 637 visibility.append(scans5GHz.toString()); 638 } 639 } else { 640 visibility.append("max=").append(rssi5); 641 if (scans5GHz != null) { 642 visibility.append(",").append(scans5GHz.toString()); 643 } 644 } 645 } 646 if (numBlackListed > 0) 647 visibility.append("!").append(numBlackListed); 648 visibility.append("]"); 649 650 return visibility.toString(); 651 } 652 653 /** 654 * Return whether this is the active connection. 655 * For ephemeral connections (networkId is invalid), this returns false if the network is 656 * disconnected. 657 */ 658 public boolean isActive() { 659 return mNetworkInfo != null && 660 (networkId != WifiConfiguration.INVALID_NETWORK_ID || 661 mNetworkInfo.getState() != State.DISCONNECTED); 662 } 663 664 public boolean isConnectable() { 665 return getLevel() != -1 && getDetailedState() == null; 666 } 667 668 public boolean isEphemeral() { 669 return mInfo != null && mInfo.isEphemeral() && 670 mNetworkInfo != null && mNetworkInfo.getState() != State.DISCONNECTED; 671 } 672 673 public boolean isPasspoint() { 674 return mConfig != null && mConfig.isPasspoint(); 675 } 676 677 /** 678 * Return whether the given {@link WifiInfo} is for this access point. 679 * If the current AP does not have a network Id then the config is used to 680 * match based on SSID and security. 681 */ 682 private boolean isInfoForThisAccessPoint(WifiConfiguration config, WifiInfo info) { 683 if (isPasspoint() == false && networkId != WifiConfiguration.INVALID_NETWORK_ID) { 684 return networkId == info.getNetworkId(); 685 } else if (config != null) { 686 return matches(config); 687 } 688 else { 689 // Might be an ephemeral connection with no WifiConfiguration. Try matching on SSID. 690 // (Note that we only do this if the WifiConfiguration explicitly equals INVALID). 691 // TODO: Handle hex string SSIDs. 692 return ssid.equals(removeDoubleQuotes(info.getSSID())); 693 } 694 } 695 696 public boolean isSaved() { 697 return networkId != WifiConfiguration.INVALID_NETWORK_ID; 698 } 699 700 public Object getTag() { 701 return mTag; 702 } 703 704 public void setTag(Object tag) { 705 mTag = tag; 706 } 707 708 /** 709 * Generate and save a default wifiConfiguration with common values. 710 * Can only be called for unsecured networks. 711 */ 712 public void generateOpenNetworkConfig() { 713 if (security != SECURITY_NONE) 714 throw new IllegalStateException(); 715 if (mConfig != null) 716 return; 717 mConfig = new WifiConfiguration(); 718 mConfig.SSID = AccessPoint.convertToQuotedString(ssid); 719 mConfig.allowedKeyManagement.set(KeyMgmt.NONE); 720 } 721 722 void loadConfig(WifiConfiguration config) { 723 if (config.isPasspoint()) 724 ssid = config.providerFriendlyName; 725 else 726 ssid = (config.SSID == null ? "" : removeDoubleQuotes(config.SSID)); 727 728 bssid = config.BSSID; 729 security = getSecurity(config); 730 networkId = config.networkId; 731 mConfig = config; 732 } 733 734 private void initWithScanResult(ScanResult result) { 735 ssid = result.SSID; 736 bssid = result.BSSID; 737 security = getSecurity(result); 738 if (security == SECURITY_PSK) 739 pskType = getPskType(result); 740 mRssi = result.level; 741 mSeen = result.timestamp; 742 } 743 744 public void saveWifiState(Bundle savedState) { 745 if (ssid != null) savedState.putString(KEY_SSID, getSsidStr()); 746 savedState.putInt(KEY_SECURITY, security); 747 savedState.putInt(KEY_PSKTYPE, pskType); 748 if (mConfig != null) savedState.putParcelable(KEY_CONFIG, mConfig); 749 savedState.putParcelable(KEY_WIFIINFO, mInfo); 750 evictOldScanResults(); 751 savedState.putParcelableArrayList(KEY_SCANRESULTCACHE, 752 new ArrayList<ScanResult>(mScanResultCache.values())); 753 if (mNetworkInfo != null) { 754 savedState.putParcelable(KEY_NETWORKINFO, mNetworkInfo); 755 } 756 } 757 758 public void setListener(AccessPointListener listener) { 759 mAccessPointListener = listener; 760 } 761 762 boolean update(ScanResult result) { 763 if (matches(result)) { 764 /* Add or update the scan result for the BSSID */ 765 mScanResultCache.put(result.BSSID, result); 766 767 int oldLevel = getLevel(); 768 int oldRssi = getRssi(); 769 mSeen = getSeen(); 770 mRssi = (getRssi() + oldRssi)/2; 771 int newLevel = getLevel(); 772 773 if (newLevel > 0 && newLevel != oldLevel && mAccessPointListener != null) { 774 mAccessPointListener.onLevelChanged(this); 775 } 776 // This flag only comes from scans, is not easily saved in config 777 if (security == SECURITY_PSK) { 778 pskType = getPskType(result); 779 } 780 781 if (mAccessPointListener != null) { 782 mAccessPointListener.onAccessPointChanged(this); 783 } 784 785 return true; 786 } 787 return false; 788 } 789 790 boolean update(WifiConfiguration config, WifiInfo info, NetworkInfo networkInfo) { 791 boolean reorder = false; 792 if (info != null && isInfoForThisAccessPoint(config, info)) { 793 reorder = (mInfo == null); 794 mRssi = info.getRssi(); 795 mInfo = info; 796 mNetworkInfo = networkInfo; 797 if (mAccessPointListener != null) { 798 mAccessPointListener.onAccessPointChanged(this); 799 } 800 } else if (mInfo != null) { 801 reorder = true; 802 mInfo = null; 803 mNetworkInfo = null; 804 if (mAccessPointListener != null) { 805 mAccessPointListener.onAccessPointChanged(this); 806 } 807 } 808 return reorder; 809 } 810 811 void update(WifiConfiguration config) { 812 mConfig = config; 813 networkId = config.networkId; 814 if (mAccessPointListener != null) { 815 mAccessPointListener.onAccessPointChanged(this); 816 } 817 } 818 819 void setRssi(int rssi) { 820 mRssi = rssi; 821 } 822 823 public static String getSummary(Context context, String ssid, DetailedState state, 824 boolean isEphemeral, String passpointProvider) { 825 if (state == DetailedState.CONNECTED && ssid == null) { 826 if (TextUtils.isEmpty(passpointProvider) == false) { 827 // Special case for connected + passpoint networks. 828 String format = context.getString(R.string.connected_via_passpoint); 829 return String.format(format, passpointProvider); 830 } else if (isEphemeral) { 831 // Special case for connected + ephemeral networks. 832 return context.getString(R.string.connected_via_wfa); 833 } 834 } 835 836 // Case when there is wifi connected without internet connectivity. 837 final ConnectivityManager cm = (ConnectivityManager) 838 context.getSystemService(Context.CONNECTIVITY_SERVICE); 839 if (state == DetailedState.CONNECTED) { 840 IWifiManager wifiManager = IWifiManager.Stub.asInterface( 841 ServiceManager.getService(Context.WIFI_SERVICE)); 842 NetworkCapabilities nc = null; 843 844 try { 845 nc = cm.getNetworkCapabilities(wifiManager.getCurrentNetwork()); 846 } catch (RemoteException e) {} 847 848 if (nc != null) { 849 if (nc.hasCapability(nc.NET_CAPABILITY_CAPTIVE_PORTAL)) { 850 return context.getString( 851 com.android.internal.R.string.network_available_sign_in); 852 } else if (!nc.hasCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED)) { 853 return context.getString(R.string.wifi_connected_no_internet); 854 } 855 } 856 } 857 if (state == null) { 858 Log.w(TAG, "state is null, returning empty summary"); 859 return ""; 860 } 861 String[] formats = context.getResources().getStringArray((ssid == null) 862 ? R.array.wifi_status : R.array.wifi_status_with_ssid); 863 int index = state.ordinal(); 864 865 if (index >= formats.length || formats[index].length() == 0) { 866 return ""; 867 } 868 return String.format(formats[index], ssid); 869 } 870 871 public static String getSummary(Context context, DetailedState state, boolean isEphemeral) { 872 return getSummary(context, null, state, isEphemeral, null); 873 } 874 875 public static String getSummary(Context context, DetailedState state, boolean isEphemeral, 876 String passpointProvider) { 877 return getSummary(context, null, state, isEphemeral, passpointProvider); 878 } 879 880 public static String convertToQuotedString(String string) { 881 return "\"" + string + "\""; 882 } 883 884 private static int getPskType(ScanResult result) { 885 boolean wpa = result.capabilities.contains("WPA-PSK"); 886 boolean wpa2 = result.capabilities.contains("WPA2-PSK"); 887 if (wpa2 && wpa) { 888 return PSK_WPA_WPA2; 889 } else if (wpa2) { 890 return PSK_WPA2; 891 } else if (wpa) { 892 return PSK_WPA; 893 } else { 894 Log.w(TAG, "Received abnormal flag string: " + result.capabilities); 895 return PSK_UNKNOWN; 896 } 897 } 898 899 private static int getSecurity(ScanResult result) { 900 if (result.capabilities.contains("WEP")) { 901 return SECURITY_WEP; 902 } else if (result.capabilities.contains("PSK")) { 903 return SECURITY_PSK; 904 } else if (result.capabilities.contains("EAP")) { 905 return SECURITY_EAP; 906 } 907 return SECURITY_NONE; 908 } 909 910 static int getSecurity(WifiConfiguration config) { 911 if (config.allowedKeyManagement.get(KeyMgmt.WPA_PSK)) { 912 return SECURITY_PSK; 913 } 914 if (config.allowedKeyManagement.get(KeyMgmt.WPA_EAP) || 915 config.allowedKeyManagement.get(KeyMgmt.IEEE8021X)) { 916 return SECURITY_EAP; 917 } 918 return (config.wepKeys[0] != null) ? SECURITY_WEP : SECURITY_NONE; 919 } 920 921 public static String securityToString(int security, int pskType) { 922 if (security == SECURITY_WEP) { 923 return "WEP"; 924 } else if (security == SECURITY_PSK) { 925 if (pskType == PSK_WPA) { 926 return "WPA"; 927 } else if (pskType == PSK_WPA2) { 928 return "WPA2"; 929 } else if (pskType == PSK_WPA_WPA2) { 930 return "WPA_WPA2"; 931 } 932 return "PSK"; 933 } else if (security == SECURITY_EAP) { 934 return "EAP"; 935 } 936 return "NONE"; 937 } 938 939 static String removeDoubleQuotes(String string) { 940 if (TextUtils.isEmpty(string)) { 941 return ""; 942 } 943 int length = string.length(); 944 if ((length > 1) && (string.charAt(0) == '"') 945 && (string.charAt(length - 1) == '"')) { 946 return string.substring(1, length - 1); 947 } 948 return string; 949 } 950 951 public interface AccessPointListener { 952 void onAccessPointChanged(AccessPoint accessPoint); 953 void onLevelChanged(AccessPoint accessPoint); 954 } 955} 956