AccessPoint.java revision 2b51cc30d523cce3609a498c466364caf3ce504e
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.content.Context; 20import android.net.ConnectivityManager; 21import android.net.Network; 22import android.net.NetworkCapabilities; 23import android.net.NetworkInfo; 24import android.net.NetworkInfo.DetailedState; 25import android.net.NetworkInfo.State; 26import android.net.wifi.IWifiManager; 27import android.net.wifi.ScanResult; 28import android.net.wifi.WifiConfiguration; 29import android.net.wifi.WifiConfiguration.KeyMgmt; 30import android.net.wifi.WifiInfo; 31import android.net.wifi.WifiManager; 32import android.os.Bundle; 33import android.text.TextUtils; 34import android.os.RemoteException; 35import android.os.ServiceManager; 36import android.util.Log; 37import android.util.LruCache; 38import android.content.pm.ApplicationInfo; 39import android.content.pm.IPackageManager; 40import android.content.pm.PackageManager; 41import android.os.UserHandle; 42import android.os.RemoteException; 43import android.app.AppGlobals; 44 45import com.android.settingslib.R; 46 47import java.util.Map; 48 49 50public class AccessPoint implements Comparable<AccessPoint> { 51 static final String TAG = "SettingsLib.AccessPoint"; 52 53 /** 54 * Lower bound on the 2.4 GHz (802.11b/g/n) WLAN channels 55 */ 56 public static final int LOWER_FREQ_24GHZ = 2400; 57 58 /** 59 * Upper bound on the 2.4 GHz (802.11b/g/n) WLAN channels 60 */ 61 public static final int HIGHER_FREQ_24GHZ = 2500; 62 63 /** 64 * Lower bound on the 5.0 GHz (802.11a/h/j/n/ac) WLAN channels 65 */ 66 public static final int LOWER_FREQ_5GHZ = 4900; 67 68 /** 69 * Upper bound on the 5.0 GHz (802.11a/h/j/n/ac) WLAN channels 70 */ 71 public static final int HIGHER_FREQ_5GHZ = 5900; 72 73 74 /** 75 * Experimental: we should be able to show the user the list of BSSIDs and bands 76 * for that SSID. 77 * For now this data is used only with Verbose Logging so as to show the band and number 78 * of BSSIDs on which that network is seen. 79 */ 80 public LruCache<String, ScanResult> mScanResultCache; 81 private static final String KEY_NETWORKINFO = "key_networkinfo"; 82 private static final String KEY_WIFIINFO = "key_wifiinfo"; 83 private static final String KEY_SCANRESULT = "key_scanresult"; 84 private static final String KEY_CONFIG = "key_config"; 85 86 /** 87 * These values are matched in string arrays -- changes must be kept in sync 88 */ 89 public static final int SECURITY_NONE = 0; 90 public static final int SECURITY_WEP = 1; 91 public static final int SECURITY_PSK = 2; 92 public static final int SECURITY_EAP = 3; 93 94 private static final int PSK_UNKNOWN = 0; 95 private static final int PSK_WPA = 1; 96 private static final int PSK_WPA2 = 2; 97 private static final int PSK_WPA_WPA2 = 3; 98 99 private static final int VISIBILITY_OUTDATED_AGE_IN_MILLI = 20000; 100 private final Context mContext; 101 102 private String ssid; 103 private int security; 104 private int networkId = WifiConfiguration.INVALID_NETWORK_ID; 105 106 private int pskType = PSK_UNKNOWN; 107 108 private WifiConfiguration mConfig; 109 private ScanResult mScanResult; 110 111 private int mRssi = Integer.MAX_VALUE; 112 private long mSeen = 0; 113 114 private WifiInfo mInfo; 115 private NetworkInfo mNetworkInfo; 116 private AccessPointListener mAccessPointListener; 117 118 private Object mTag; 119 120 public AccessPoint(Context context, Bundle savedState) { 121 mContext = context; 122 mConfig = savedState.getParcelable(KEY_CONFIG); 123 if (mConfig != null) { 124 loadConfig(mConfig); 125 } 126 mScanResult = (ScanResult) savedState.getParcelable(KEY_SCANRESULT); 127 if (mScanResult != null) { 128 loadResult(mScanResult); 129 } 130 mInfo = (WifiInfo) savedState.getParcelable(KEY_WIFIINFO); 131 if (savedState.containsKey(KEY_NETWORKINFO)) { 132 mNetworkInfo = savedState.getParcelable(KEY_NETWORKINFO); 133 } 134 update(mInfo, mNetworkInfo); 135 } 136 137 AccessPoint(Context context, ScanResult result) { 138 mContext = context; 139 loadResult(result); 140 } 141 142 AccessPoint(Context context, WifiConfiguration config) { 143 mContext = context; 144 loadConfig(config); 145 } 146 147 @Override 148 public int compareTo(AccessPoint other) { 149 // Active one goes first. 150 if (isActive() && !other.isActive()) return -1; 151 if (!isActive() && other.isActive()) return 1; 152 153 // Reachable one goes before unreachable one. 154 if (mRssi != Integer.MAX_VALUE && other.mRssi == Integer.MAX_VALUE) return -1; 155 if (mRssi == Integer.MAX_VALUE && other.mRssi != Integer.MAX_VALUE) return 1; 156 157 // Configured one goes before unconfigured one. 158 if (networkId != WifiConfiguration.INVALID_NETWORK_ID 159 && other.networkId == WifiConfiguration.INVALID_NETWORK_ID) return -1; 160 if (networkId == WifiConfiguration.INVALID_NETWORK_ID 161 && other.networkId != WifiConfiguration.INVALID_NETWORK_ID) return 1; 162 163 // Sort by signal strength. 164 int difference = WifiManager.compareSignalLevel(other.mRssi, mRssi); 165 if (difference != 0) { 166 return difference; 167 } 168 // Sort by ssid. 169 return ssid.compareToIgnoreCase(other.ssid); 170 } 171 172 @Override 173 public boolean equals(Object other) { 174 if (!(other instanceof AccessPoint)) return false; 175 return (this.compareTo((AccessPoint) other) == 0); 176 } 177 178 @Override 179 public int hashCode() { 180 int result = 0; 181 if (mInfo != null) result += 13 * mInfo.hashCode(); 182 result += 19 * mRssi; 183 result += 23 * networkId; 184 result += 29 * ssid.hashCode(); 185 return result; 186 } 187 188 @Override 189 public String toString() { 190 StringBuilder builder = new StringBuilder().append("AccessPoint(") 191 .append(ssid); 192 if (isSaved()) { 193 builder.append(',').append("saved"); 194 } 195 if (isActive()) { 196 builder.append(',').append("active"); 197 } 198 if (isEphemeral()) { 199 builder.append(',').append("ephemeral"); 200 } 201 if (isConnectable()) { 202 builder.append(',').append("connectable"); 203 } 204 if (security != SECURITY_NONE) { 205 builder.append(',').append(securityToString(security, pskType)); 206 } 207 return builder.append(')').toString(); 208 } 209 210 public boolean matches(ScanResult result) { 211 return ssid.equals(result.SSID) && security == getSecurity(result); 212 } 213 214 public boolean matches(WifiConfiguration config) { 215 if (config.isPasspoint() && mConfig != null && mConfig.isPasspoint()) 216 return config.FQDN.equals(mConfig.providerFriendlyName); 217 else 218 return ssid.equals(removeDoubleQuotes(config.SSID)) && security == getSecurity(config); 219 } 220 221 public WifiConfiguration getConfig() { 222 return mConfig; 223 } 224 225 public void clearConfig() { 226 mConfig = null; 227 networkId = WifiConfiguration.INVALID_NETWORK_ID; 228 } 229 230 public WifiInfo getInfo() { 231 return mInfo; 232 } 233 234 public int getLevel() { 235 if (mRssi == Integer.MAX_VALUE) { 236 return -1; 237 } 238 return WifiManager.calculateSignalLevel(mRssi, 4); 239 } 240 241 public NetworkInfo getNetworkInfo() { 242 return mNetworkInfo; 243 } 244 245 public int getSecurity() { 246 return security; 247 } 248 249 public String getSecurityString(boolean concise) { 250 Context context = mContext; 251 switch(security) { 252 case SECURITY_EAP: 253 return concise ? context.getString(R.string.wifi_security_short_eap) : 254 context.getString(R.string.wifi_security_eap); 255 case SECURITY_PSK: 256 switch (pskType) { 257 case PSK_WPA: 258 return concise ? context.getString(R.string.wifi_security_short_wpa) : 259 context.getString(R.string.wifi_security_wpa); 260 case PSK_WPA2: 261 return concise ? context.getString(R.string.wifi_security_short_wpa2) : 262 context.getString(R.string.wifi_security_wpa2); 263 case PSK_WPA_WPA2: 264 return concise ? context.getString(R.string.wifi_security_short_wpa_wpa2) : 265 context.getString(R.string.wifi_security_wpa_wpa2); 266 case PSK_UNKNOWN: 267 default: 268 return concise ? context.getString(R.string.wifi_security_short_psk_generic) 269 : context.getString(R.string.wifi_security_psk_generic); 270 } 271 case SECURITY_WEP: 272 return concise ? context.getString(R.string.wifi_security_short_wep) : 273 context.getString(R.string.wifi_security_wep); 274 case SECURITY_NONE: 275 default: 276 return concise ? "" : context.getString(R.string.wifi_security_none); 277 } 278 } 279 280 public String getSsid() { 281 return ssid; 282 } 283 284 public String getConfigName() { 285 if (mConfig != null && mConfig.isPasspoint()) { 286 return mConfig.providerFriendlyName; 287 } else { 288 return ssid; 289 } 290 } 291 292 public DetailedState getDetailedState() { 293 return mNetworkInfo != null ? mNetworkInfo.getDetailedState() : null; 294 } 295 296 public String getSavedNetworkSummary() { 297 if (mConfig != null) { 298 PackageManager pm = mContext.getPackageManager(); 299 String systemName = pm.getNameForUid(android.os.Process.SYSTEM_UID); 300 int userId = UserHandle.getUserId(mConfig.creatorUid); 301 ApplicationInfo appInfo = null; 302 if (mConfig.creatorName != null && mConfig.creatorName.equals(systemName)) { 303 appInfo = mContext.getApplicationInfo(); 304 } else { 305 try { 306 IPackageManager ipm = AppGlobals.getPackageManager(); 307 appInfo = ipm.getApplicationInfo(mConfig.creatorName, 0 /* flags */, userId); 308 } catch (RemoteException rex) { 309 } 310 } 311 if (appInfo != null && 312 !appInfo.packageName.equals(mContext.getString(R.string.settings_package)) && 313 !appInfo.packageName.equals( 314 mContext.getString(R.string.certinstaller_package))) { 315 return mContext.getString(R.string.saved_network, appInfo.loadLabel(pm)); 316 } 317 } 318 return ""; 319 } 320 321 public String getSummary() { 322 return getSettingsSummary(); 323 } 324 325 public String getSettingsSummary() { 326 // Update to new summary 327 StringBuilder summary = new StringBuilder(); 328 329 if (isActive() && mConfig != null && mConfig.isPasspoint()) { 330 // This is the active connection on passpoint 331 summary.append(getSummary(mContext, getDetailedState(), 332 false, mConfig.providerFriendlyName)); 333 } else if (isActive()) { 334 // This is the active connection on non-passpoint network 335 summary.append(getSummary(mContext, getDetailedState(), 336 networkId == WifiConfiguration.INVALID_NETWORK_ID)); 337 } else if (mConfig != null && mConfig.isPasspoint()) { 338 String format = mContext.getString(R.string.available_via_passpoint); 339 summary.append(String.format(format, mConfig.providerFriendlyName)); 340 } else if (mConfig != null && mConfig.hasNoInternetAccess()) { 341 summary.append(mContext.getString(R.string.wifi_no_internet)); 342 } else if (mConfig != null && ((mConfig.status == WifiConfiguration.Status.DISABLED && 343 mConfig.disableReason != WifiConfiguration.DISABLED_UNKNOWN_REASON) 344 || mConfig.autoJoinStatus 345 >= WifiConfiguration.AUTO_JOIN_DISABLED_ON_AUTH_FAILURE)) { 346 if (mConfig.autoJoinStatus 347 >= WifiConfiguration.AUTO_JOIN_DISABLED_ON_AUTH_FAILURE) { 348 if (mConfig.disableReason == WifiConfiguration.DISABLED_DHCP_FAILURE) { 349 summary.append(mContext.getString(R.string.wifi_disabled_network_failure)); 350 } else if (mConfig.disableReason == WifiConfiguration.DISABLED_AUTH_FAILURE) { 351 summary.append(mContext.getString(R.string.wifi_disabled_password_failure)); 352 } else { 353 summary.append(mContext.getString(R.string.wifi_disabled_wifi_failure)); 354 } 355 } else { 356 switch (mConfig.disableReason) { 357 case WifiConfiguration.DISABLED_AUTH_FAILURE: 358 summary.append(mContext.getString(R.string.wifi_disabled_password_failure)); 359 break; 360 case WifiConfiguration.DISABLED_DHCP_FAILURE: 361 case WifiConfiguration.DISABLED_DNS_FAILURE: 362 summary.append(mContext.getString(R.string.wifi_disabled_network_failure)); 363 break; 364 case WifiConfiguration.DISABLED_UNKNOWN_REASON: 365 case WifiConfiguration.DISABLED_ASSOCIATION_REJECT: 366 summary.append(mContext.getString(R.string.wifi_disabled_generic)); 367 break; 368 } 369 } 370 } else if (mRssi == Integer.MAX_VALUE) { // Wifi out of range 371 summary.append(mContext.getString(R.string.wifi_not_in_range)); 372 } else { // In range, not disabled. 373 if (mConfig != null) { // Is saved network 374 summary.append(mContext.getString(R.string.wifi_remembered)); 375 } 376 } 377 378 if (WifiTracker.sVerboseLogging > 0) { 379 // Add RSSI/band information for this config, what was seen up to 6 seconds ago 380 // verbose WiFi Logging is only turned on thru developers settings 381 if (mInfo != null && mNetworkInfo != null) { // This is the active connection 382 summary.append(" f=" + Integer.toString(mInfo.getFrequency())); 383 } 384 summary.append(" " + getVisibilityStatus()); 385 if (mConfig != null && mConfig.autoJoinStatus > 0) { 386 summary.append(" (" + mConfig.autoJoinStatus); 387 if (mConfig.blackListTimestamp > 0) { 388 long now = System.currentTimeMillis(); 389 long diff = (now - mConfig.blackListTimestamp)/1000; 390 long sec = diff%60; //seconds 391 long min = (diff/60)%60; //minutes 392 long hour = (min/60)%60; //hours 393 summary.append(", "); 394 if (hour > 0) summary.append(Long.toString(hour) + "h "); 395 summary.append( Long.toString(min) + "m "); 396 summary.append( Long.toString(sec) + "s "); 397 } 398 summary.append(")"); 399 } 400 if (mConfig != null && mConfig.numIpConfigFailures > 0) { 401 summary.append(" ipf=").append(mConfig.numIpConfigFailures); 402 } 403 if (mConfig != null && mConfig.numConnectionFailures > 0) { 404 summary.append(" cf=").append(mConfig.numConnectionFailures); 405 } 406 if (mConfig != null && mConfig.numAuthFailures > 0) { 407 summary.append(" authf=").append(mConfig.numAuthFailures); 408 } 409 if (mConfig != null && mConfig.numNoInternetAccessReports > 0) { 410 summary.append(" noInt=").append(mConfig.numNoInternetAccessReports); 411 } 412 } 413 return summary.toString(); 414 } 415 416 /** 417 * Returns the visibility status of the WifiConfiguration. 418 * 419 * @return autojoin debugging information 420 * TODO: use a string formatter 421 * ["rssi 5Ghz", "num results on 5GHz" / "rssi 5Ghz", "num results on 5GHz"] 422 * For instance [-40,5/-30,2] 423 */ 424 private String getVisibilityStatus() { 425 StringBuilder visibility = new StringBuilder(); 426 StringBuilder scans24GHz = null; 427 StringBuilder scans5GHz = null; 428 String bssid = null; 429 430 long now = System.currentTimeMillis(); 431 432 if (mInfo != null) { 433 bssid = mInfo.getBSSID(); 434 if (bssid != null) { 435 visibility.append(" ").append(bssid); 436 } 437 visibility.append(" rssi=").append(mInfo.getRssi()); 438 visibility.append(" "); 439 visibility.append(" score=").append(mInfo.score); 440 visibility.append(String.format(" tx=%.1f,", mInfo.txSuccessRate)); 441 visibility.append(String.format("%.1f,", mInfo.txRetriesRate)); 442 visibility.append(String.format("%.1f ", mInfo.txBadRate)); 443 visibility.append(String.format("rx=%.1f", mInfo.rxSuccessRate)); 444 } 445 446 if (mScanResultCache != null) { 447 int rssi5 = WifiConfiguration.INVALID_RSSI; 448 int rssi24 = WifiConfiguration.INVALID_RSSI; 449 int num5 = 0; 450 int num24 = 0; 451 int numBlackListed = 0; 452 int n24 = 0; // Number scan results we included in the string 453 int n5 = 0; // Number scan results we included in the string 454 Map<String, ScanResult> list = mScanResultCache.snapshot(); 455 // TODO: sort list by RSSI or age 456 for (ScanResult result : list.values()) { 457 if (result.seen == 0) 458 continue; 459 460 if (result.autoJoinStatus != ScanResult.ENABLED) numBlackListed++; 461 462 if (result.frequency >= LOWER_FREQ_5GHZ 463 && result.frequency <= HIGHER_FREQ_5GHZ) { 464 // Strictly speaking: [4915, 5825] 465 // number of known BSSID on 5GHz band 466 num5 = num5 + 1; 467 } else if (result.frequency >= LOWER_FREQ_24GHZ 468 && result.frequency <= HIGHER_FREQ_24GHZ) { 469 // Strictly speaking: [2412, 2482] 470 // number of known BSSID on 2.4Ghz band 471 num24 = num24 + 1; 472 } 473 474 // Ignore results seen, older than 20 seconds 475 if (now - result.seen > VISIBILITY_OUTDATED_AGE_IN_MILLI) continue; 476 477 if (result.frequency >= LOWER_FREQ_5GHZ 478 && result.frequency <= HIGHER_FREQ_5GHZ) { 479 if (result.level > rssi5) { 480 rssi5 = result.level; 481 } 482 if (n5 < 4) { 483 if (scans5GHz == null) scans5GHz = new StringBuilder(); 484 scans5GHz.append(" \n{").append(result.BSSID); 485 if (bssid != null && result.BSSID.equals(bssid)) scans5GHz.append("*"); 486 scans5GHz.append("=").append(result.frequency); 487 scans5GHz.append(",").append(result.level); 488 if (result.autoJoinStatus != 0) { 489 scans5GHz.append(",st=").append(result.autoJoinStatus); 490 } 491 if (result.numIpConfigFailures != 0) { 492 scans5GHz.append(",ipf=").append(result.numIpConfigFailures); 493 } 494 scans5GHz.append("}"); 495 n5++; 496 } 497 } else if (result.frequency >= LOWER_FREQ_24GHZ 498 && result.frequency <= HIGHER_FREQ_24GHZ) { 499 if (result.level > rssi24) { 500 rssi24 = result.level; 501 } 502 if (n24 < 4) { 503 if (scans24GHz == null) scans24GHz = new StringBuilder(); 504 scans24GHz.append(" \n{").append(result.BSSID); 505 if (bssid != null && result.BSSID.equals(bssid)) scans24GHz.append("*"); 506 scans24GHz.append("=").append(result.frequency); 507 scans24GHz.append(",").append(result.level); 508 if (result.autoJoinStatus != 0) { 509 scans24GHz.append(",st=").append(result.autoJoinStatus); 510 } 511 if (result.numIpConfigFailures != 0) { 512 scans24GHz.append(",ipf=").append(result.numIpConfigFailures); 513 } 514 scans24GHz.append("}"); 515 n24++; 516 } 517 } 518 } 519 visibility.append(" ["); 520 if (num24 > 0) { 521 visibility.append("(").append(num24).append(")"); 522 if (n24 <= 4) { 523 if (scans24GHz != null) { 524 visibility.append(scans24GHz.toString()); 525 } 526 } else { 527 visibility.append("max=").append(rssi24); 528 if (scans24GHz != null) { 529 visibility.append(",").append(scans24GHz.toString()); 530 } 531 } 532 } 533 visibility.append(";"); 534 if (num5 > 0) { 535 visibility.append("(").append(num5).append(")"); 536 if (n5 <= 4) { 537 if (scans5GHz != null) { 538 visibility.append(scans5GHz.toString()); 539 } 540 } else { 541 visibility.append("max=").append(rssi5); 542 if (scans5GHz != null) { 543 visibility.append(",").append(scans5GHz.toString()); 544 } 545 } 546 } 547 if (numBlackListed > 0) 548 visibility.append("!").append(numBlackListed); 549 visibility.append("]"); 550 } else { 551 if (mRssi != Integer.MAX_VALUE) { 552 visibility.append(" rssi="); 553 visibility.append(mRssi); 554 if (mScanResult != null) { 555 visibility.append(", f="); 556 visibility.append(mScanResult.frequency); 557 } 558 } 559 } 560 561 return visibility.toString(); 562 } 563 564 /** 565 * Return whether this is the active connection. 566 * For ephemeral connections (networkId is invalid), this returns false if the network is 567 * disconnected. 568 */ 569 public boolean isActive() { 570 return mNetworkInfo != null && 571 (networkId != WifiConfiguration.INVALID_NETWORK_ID || 572 mNetworkInfo.getState() != State.DISCONNECTED); 573 } 574 575 public boolean isConnectable() { 576 return getLevel() != -1 && getDetailedState() == null; 577 } 578 579 public boolean isEphemeral() { 580 return !isSaved() && mNetworkInfo != null && mNetworkInfo.getState() != State.DISCONNECTED; 581 } 582 583 /** Return whether the given {@link WifiInfo} is for this access point. */ 584 private boolean isInfoForThisAccessPoint(WifiInfo info) { 585 if (networkId != WifiConfiguration.INVALID_NETWORK_ID) { 586 return networkId == info.getNetworkId(); 587 } else { 588 // Might be an ephemeral connection with no WifiConfiguration. Try matching on SSID. 589 // (Note that we only do this if the WifiConfiguration explicitly equals INVALID). 590 // TODO: Handle hex string SSIDs. 591 return ssid.equals(removeDoubleQuotes(info.getSSID())); 592 } 593 } 594 595 public boolean isSaved() { 596 return networkId != WifiConfiguration.INVALID_NETWORK_ID; 597 } 598 599 public Object getTag() { 600 return mTag; 601 } 602 603 public void setTag(Object tag) { 604 mTag = tag; 605 } 606 607 /** 608 * Generate and save a default wifiConfiguration with common values. 609 * Can only be called for unsecured networks. 610 */ 611 public void generateOpenNetworkConfig() { 612 if (security != SECURITY_NONE) 613 throw new IllegalStateException(); 614 if (mConfig != null) 615 return; 616 mConfig = new WifiConfiguration(); 617 mConfig.SSID = AccessPoint.convertToQuotedString(ssid); 618 mConfig.allowedKeyManagement.set(KeyMgmt.NONE); 619 } 620 621 void loadConfig(WifiConfiguration config) { 622 if (config.isPasspoint()) 623 ssid = config.providerFriendlyName; 624 else 625 ssid = (config.SSID == null ? "" : removeDoubleQuotes(config.SSID)); 626 627 security = getSecurity(config); 628 networkId = config.networkId; 629 mConfig = config; 630 } 631 632 private void loadResult(ScanResult result) { 633 ssid = result.SSID; 634 security = getSecurity(result); 635 if (security == SECURITY_PSK) 636 pskType = getPskType(result); 637 mRssi = result.level; 638 mScanResult = result; 639 if (result.seen > mSeen) { 640 mSeen = result.seen; 641 } 642 } 643 644 public void saveWifiState(Bundle savedState) { 645 savedState.putParcelable(KEY_CONFIG, mConfig); 646 savedState.putParcelable(KEY_SCANRESULT, mScanResult); 647 savedState.putParcelable(KEY_WIFIINFO, mInfo); 648 if (mNetworkInfo != null) { 649 savedState.putParcelable(KEY_NETWORKINFO, mNetworkInfo); 650 } 651 } 652 653 public void setListener(AccessPointListener listener) { 654 mAccessPointListener = listener; 655 } 656 657 boolean update(ScanResult result) { 658 if (result.seen > mSeen) { 659 mSeen = result.seen; 660 } 661 if (WifiTracker.sVerboseLogging > 0) { 662 if (mScanResultCache == null) { 663 mScanResultCache = new LruCache<String, ScanResult>(32); 664 } 665 mScanResultCache.put(result.BSSID, result); 666 } 667 668 if (ssid.equals(result.SSID) && security == getSecurity(result)) { 669 if (WifiManager.compareSignalLevel(result.level, mRssi) > 0) { 670 int oldLevel = getLevel(); 671 mRssi = result.level; 672 if (getLevel() != oldLevel && mAccessPointListener != null) { 673 mAccessPointListener.onLevelChanged(this); 674 } 675 } 676 // This flag only comes from scans, is not easily saved in config 677 if (security == SECURITY_PSK) { 678 pskType = getPskType(result); 679 } 680 mScanResult = result; 681 if (mAccessPointListener != null) { 682 mAccessPointListener.onAccessPointChanged(this); 683 } 684 return true; 685 } 686 return false; 687 } 688 689 boolean update(WifiInfo info, NetworkInfo networkInfo) { 690 boolean reorder = false; 691 if (info != null && isInfoForThisAccessPoint(info)) { 692 reorder = (mInfo == null); 693 mRssi = info.getRssi(); 694 mInfo = info; 695 mNetworkInfo = networkInfo; 696 if (mAccessPointListener != null) { 697 mAccessPointListener.onAccessPointChanged(this); 698 } 699 } else if (mInfo != null) { 700 reorder = true; 701 mInfo = null; 702 mNetworkInfo = null; 703 if (mAccessPointListener != null) { 704 mAccessPointListener.onAccessPointChanged(this); 705 } 706 } 707 return reorder; 708 } 709 710 void update(WifiConfiguration config) { 711 mConfig = config; 712 networkId = config.networkId; 713 if (mAccessPointListener != null) { 714 mAccessPointListener.onAccessPointChanged(this); 715 } 716 } 717 718 public static String getSummary(Context context, String ssid, DetailedState state, 719 boolean isEphemeral, String passpointProvider) { 720 if (state == DetailedState.CONNECTED && ssid == null) { 721 if (TextUtils.isEmpty(passpointProvider) == false) { 722 // Special case for connected + passpoint networks. 723 String format = context.getString(R.string.connected_via_passpoint); 724 return String.format(format, passpointProvider); 725 } else if (isEphemeral) { 726 // Special case for connected + ephemeral networks. 727 return context.getString(R.string.connected_via_wfa); 728 } 729 } 730 731 // Case when there is wifi connected without internet connectivity. 732 final ConnectivityManager cm = (ConnectivityManager) 733 context.getSystemService(Context.CONNECTIVITY_SERVICE); 734 if (state == DetailedState.CONNECTED) { 735 IWifiManager wifiManager = IWifiManager.Stub.asInterface( 736 ServiceManager.getService(Context.WIFI_SERVICE)); 737 Network nw; 738 739 try { 740 nw = wifiManager.getCurrentNetwork(); 741 } catch (RemoteException e) { 742 nw = null; 743 } 744 NetworkCapabilities nc = cm.getNetworkCapabilities(nw); 745 if (nc != null && !nc.hasCapability(nc.NET_CAPABILITY_VALIDATED)) { 746 return context.getString(R.string.wifi_connected_no_internet); 747 } 748 } 749 750 String[] formats = context.getResources().getStringArray((ssid == null) 751 ? R.array.wifi_status : R.array.wifi_status_with_ssid); 752 int index = state.ordinal(); 753 754 if (index >= formats.length || formats[index].length() == 0) { 755 return null; 756 } 757 return String.format(formats[index], ssid); 758 } 759 760 public static String getSummary(Context context, DetailedState state, boolean isEphemeral) { 761 return getSummary(context, null, state, isEphemeral, null); 762 } 763 764 public static String getSummary(Context context, DetailedState state, boolean isEphemeral, 765 String passpointProvider) { 766 return getSummary(context, null, state, isEphemeral, passpointProvider); 767 } 768 769 public static String convertToQuotedString(String string) { 770 return "\"" + string + "\""; 771 } 772 773 private static int getPskType(ScanResult result) { 774 boolean wpa = result.capabilities.contains("WPA-PSK"); 775 boolean wpa2 = result.capabilities.contains("WPA2-PSK"); 776 if (wpa2 && wpa) { 777 return PSK_WPA_WPA2; 778 } else if (wpa2) { 779 return PSK_WPA2; 780 } else if (wpa) { 781 return PSK_WPA; 782 } else { 783 Log.w(TAG, "Received abnormal flag string: " + result.capabilities); 784 return PSK_UNKNOWN; 785 } 786 } 787 788 private static int getSecurity(ScanResult result) { 789 if (result.capabilities.contains("WEP")) { 790 return SECURITY_WEP; 791 } else if (result.capabilities.contains("PSK")) { 792 return SECURITY_PSK; 793 } else if (result.capabilities.contains("EAP")) { 794 return SECURITY_EAP; 795 } 796 return SECURITY_NONE; 797 } 798 799 static int getSecurity(WifiConfiguration config) { 800 if (config.allowedKeyManagement.get(KeyMgmt.WPA_PSK)) { 801 return SECURITY_PSK; 802 } 803 if (config.allowedKeyManagement.get(KeyMgmt.WPA_EAP) || 804 config.allowedKeyManagement.get(KeyMgmt.IEEE8021X)) { 805 return SECURITY_EAP; 806 } 807 return (config.wepKeys[0] != null) ? SECURITY_WEP : SECURITY_NONE; 808 } 809 810 public static String securityToString(int security, int pskType) { 811 if (security == SECURITY_WEP) { 812 return "WEP"; 813 } else if (security == SECURITY_PSK) { 814 if (pskType == PSK_WPA) { 815 return "WPA"; 816 } else if (pskType == PSK_WPA2) { 817 return "WPA2"; 818 } else if (pskType == PSK_WPA_WPA2) { 819 return "WPA_WPA2"; 820 } 821 return "PSK"; 822 } else if (security == SECURITY_EAP) { 823 return "EAP"; 824 } 825 return "NONE"; 826 } 827 828 static String removeDoubleQuotes(String string) { 829 if (TextUtils.isEmpty(string)) { 830 return ""; 831 } 832 int length = string.length(); 833 if ((length > 1) && (string.charAt(0) == '"') 834 && (string.charAt(length - 1) == '"')) { 835 return string.substring(1, length - 1); 836 } 837 return string; 838 } 839 840 public interface AccessPointListener { 841 void onAccessPointChanged(AccessPoint accessPoint); 842 void onLevelChanged(AccessPoint accessPoint); 843 } 844} 845