AccessPoint.java revision 18af49395c18ce58f76cb137ec6981bd615d5719
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.Map; 53import java.util.concurrent.ConcurrentHashMap; 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 99 /** 100 * These values are matched in string arrays -- changes must be kept in sync 101 */ 102 public static final int SECURITY_NONE = 0; 103 public static final int SECURITY_WEP = 1; 104 public static final int SECURITY_PSK = 2; 105 public static final int SECURITY_EAP = 3; 106 107 private static final int PSK_UNKNOWN = 0; 108 private static final int PSK_WPA = 1; 109 private static final int PSK_WPA2 = 2; 110 private static final int PSK_WPA_WPA2 = 3; 111 112 public static final int SIGNAL_LEVELS = 4; 113 114 private final Context mContext; 115 116 private String ssid; 117 private String bssid; 118 private int security; 119 private int networkId = WifiConfiguration.INVALID_NETWORK_ID; 120 121 private int pskType = PSK_UNKNOWN; 122 123 private WifiConfiguration mConfig; 124 125 private int mRssi = Integer.MAX_VALUE; 126 private long mSeen = 0; 127 128 private WifiInfo mInfo; 129 private NetworkInfo mNetworkInfo; 130 private AccessPointListener mAccessPointListener; 131 132 private Object mTag; 133 134 public AccessPoint(Context context, Bundle savedState) { 135 mContext = context; 136 mConfig = savedState.getParcelable(KEY_CONFIG); 137 if (mConfig != null) { 138 loadConfig(mConfig); 139 } 140 if (savedState.containsKey(KEY_SSID)) { 141 ssid = savedState.getString(KEY_SSID); 142 } 143 if (savedState.containsKey(KEY_SECURITY)) { 144 security = savedState.getInt(KEY_SECURITY); 145 } 146 if (savedState.containsKey(KEY_PSKTYPE)) { 147 pskType = savedState.getInt(KEY_PSKTYPE); 148 } 149 mInfo = (WifiInfo) savedState.getParcelable(KEY_WIFIINFO); 150 if (savedState.containsKey(KEY_NETWORKINFO)) { 151 mNetworkInfo = savedState.getParcelable(KEY_NETWORKINFO); 152 } 153 if (savedState.containsKey(KEY_SCANRESULTCACHE)) { 154 ArrayList<ScanResult> scanResultArrayList = 155 savedState.getParcelableArrayList(KEY_SCANRESULTCACHE); 156 mScanResultCache.clear(); 157 for (ScanResult result : scanResultArrayList) { 158 mScanResultCache.put(result.BSSID, result); 159 } 160 } 161 update(mConfig, mInfo, mNetworkInfo); 162 mRssi = getRssi(); 163 mSeen = getSeen(); 164 } 165 166 AccessPoint(Context context, ScanResult result) { 167 mContext = context; 168 initWithScanResult(result); 169 } 170 171 AccessPoint(Context context, WifiConfiguration config) { 172 mContext = context; 173 loadConfig(config); 174 } 175 176 @Override 177 public int compareTo(@NonNull AccessPoint other) { 178 // Active one goes first. 179 if (isActive() && !other.isActive()) return -1; 180 if (!isActive() && other.isActive()) return 1; 181 182 // Reachable one goes before unreachable one. 183 if (mRssi != Integer.MAX_VALUE && other.mRssi == Integer.MAX_VALUE) return -1; 184 if (mRssi == Integer.MAX_VALUE && other.mRssi != Integer.MAX_VALUE) return 1; 185 186 // Configured one goes before unconfigured one. 187 if (networkId != WifiConfiguration.INVALID_NETWORK_ID 188 && other.networkId == WifiConfiguration.INVALID_NETWORK_ID) return -1; 189 if (networkId == WifiConfiguration.INVALID_NETWORK_ID 190 && other.networkId != WifiConfiguration.INVALID_NETWORK_ID) return 1; 191 192 // Sort by signal strength, bucketed by level 193 int difference = WifiManager.calculateSignalLevel(other.mRssi, SIGNAL_LEVELS) 194 - WifiManager.calculateSignalLevel(mRssi, SIGNAL_LEVELS); 195 if (difference != 0) { 196 return difference; 197 } 198 // Sort by ssid. 199 return ssid.compareToIgnoreCase(other.ssid); 200 } 201 202 @Override 203 public boolean equals(Object other) { 204 if (!(other instanceof AccessPoint)) return false; 205 return (this.compareTo((AccessPoint) other) == 0); 206 } 207 208 @Override 209 public int hashCode() { 210 int result = 0; 211 if (mInfo != null) result += 13 * mInfo.hashCode(); 212 result += 19 * mRssi; 213 result += 23 * networkId; 214 result += 29 * ssid.hashCode(); 215 return result; 216 } 217 218 @Override 219 public String toString() { 220 StringBuilder builder = new StringBuilder().append("AccessPoint(") 221 .append(ssid); 222 if (isSaved()) { 223 builder.append(',').append("saved"); 224 } 225 if (isActive()) { 226 builder.append(',').append("active"); 227 } 228 if (isEphemeral()) { 229 builder.append(',').append("ephemeral"); 230 } 231 if (isConnectable()) { 232 builder.append(',').append("connectable"); 233 } 234 if (security != SECURITY_NONE) { 235 builder.append(',').append(securityToString(security, pskType)); 236 } 237 return builder.append(')').toString(); 238 } 239 240 private void evictOldScanResults() { 241 long nowMs = SystemClock.elapsedRealtime(); 242 for (Iterator<ScanResult> iter = mScanResultCache.values().iterator(); iter.hasNext(); ) { 243 ScanResult result = iter.next(); 244 // result timestamp is in microseconds 245 if (nowMs - result.timestamp / 1000 > MAX_SCAN_RESULT_AGE_MS) { 246 iter.remove(); 247 } 248 } 249 } 250 251 public boolean matches(ScanResult result) { 252 return ssid.equals(result.SSID) && security == getSecurity(result); 253 } 254 255 public boolean matches(WifiConfiguration config) { 256 if (config.isPasspoint() && mConfig != null && mConfig.isPasspoint()) { 257 return config.FQDN.equals(mConfig.providerFriendlyName); 258 } else { 259 return ssid.equals(removeDoubleQuotes(config.SSID)) 260 && security == getSecurity(config) 261 && (mConfig == null || mConfig.shared == config.shared); 262 } 263 } 264 265 public WifiConfiguration getConfig() { 266 return mConfig; 267 } 268 269 public void clearConfig() { 270 mConfig = null; 271 networkId = WifiConfiguration.INVALID_NETWORK_ID; 272 } 273 274 public WifiInfo getInfo() { 275 return mInfo; 276 } 277 278 public int getLevel() { 279 if (mRssi == Integer.MAX_VALUE) { 280 return -1; 281 } 282 return WifiManager.calculateSignalLevel(mRssi, SIGNAL_LEVELS); 283 } 284 285 public int getRssi() { 286 evictOldScanResults(); 287 int rssi = Integer.MIN_VALUE; 288 for (ScanResult result : mScanResultCache.values()) { 289 if (result.level > rssi) { 290 rssi = result.level; 291 } 292 } 293 294 return rssi; 295 } 296 297 public long getSeen() { 298 evictOldScanResults(); 299 long seen = 0; 300 for (ScanResult result : mScanResultCache.values()) { 301 if (result.timestamp > seen) { 302 seen = result.timestamp; 303 } 304 } 305 306 return seen; 307 } 308 309 public NetworkInfo getNetworkInfo() { 310 return mNetworkInfo; 311 } 312 313 public int getSecurity() { 314 return security; 315 } 316 317 public String getSecurityString(boolean concise) { 318 Context context = mContext; 319 if (mConfig != null && mConfig.isPasspoint()) { 320 return concise ? context.getString(R.string.wifi_security_short_eap) : 321 context.getString(R.string.wifi_security_eap); 322 } 323 switch(security) { 324 case SECURITY_EAP: 325 return concise ? context.getString(R.string.wifi_security_short_eap) : 326 context.getString(R.string.wifi_security_eap); 327 case SECURITY_PSK: 328 switch (pskType) { 329 case PSK_WPA: 330 return concise ? context.getString(R.string.wifi_security_short_wpa) : 331 context.getString(R.string.wifi_security_wpa); 332 case PSK_WPA2: 333 return concise ? context.getString(R.string.wifi_security_short_wpa2) : 334 context.getString(R.string.wifi_security_wpa2); 335 case PSK_WPA_WPA2: 336 return concise ? context.getString(R.string.wifi_security_short_wpa_wpa2) : 337 context.getString(R.string.wifi_security_wpa_wpa2); 338 case PSK_UNKNOWN: 339 default: 340 return concise ? context.getString(R.string.wifi_security_short_psk_generic) 341 : context.getString(R.string.wifi_security_psk_generic); 342 } 343 case SECURITY_WEP: 344 return concise ? context.getString(R.string.wifi_security_short_wep) : 345 context.getString(R.string.wifi_security_wep); 346 case SECURITY_NONE: 347 default: 348 return concise ? "" : context.getString(R.string.wifi_security_none); 349 } 350 } 351 352 public String getSsidStr() { 353 return ssid; 354 } 355 356 public String getBssid() { 357 return bssid; 358 } 359 360 public CharSequence getSsid() { 361 SpannableString str = new SpannableString(ssid); 362 str.setSpan(new TtsSpan.VerbatimBuilder(ssid).build(), 0, ssid.length(), 363 Spannable.SPAN_INCLUSIVE_INCLUSIVE); 364 return str; 365 } 366 367 public String getConfigName() { 368 if (mConfig != null && mConfig.isPasspoint()) { 369 return mConfig.providerFriendlyName; 370 } else { 371 return ssid; 372 } 373 } 374 375 public DetailedState getDetailedState() { 376 return mNetworkInfo != null ? mNetworkInfo.getDetailedState() : null; 377 } 378 379 public String getSavedNetworkSummary() { 380 if (mConfig != null) { 381 PackageManager pm = mContext.getPackageManager(); 382 String systemName = pm.getNameForUid(android.os.Process.SYSTEM_UID); 383 int userId = UserHandle.getUserId(mConfig.creatorUid); 384 ApplicationInfo appInfo = null; 385 if (mConfig.creatorName != null && mConfig.creatorName.equals(systemName)) { 386 appInfo = mContext.getApplicationInfo(); 387 } else { 388 try { 389 IPackageManager ipm = AppGlobals.getPackageManager(); 390 appInfo = ipm.getApplicationInfo(mConfig.creatorName, 0 /* flags */, userId); 391 } catch (RemoteException rex) { 392 } 393 } 394 if (appInfo != null && 395 !appInfo.packageName.equals(mContext.getString(R.string.settings_package)) && 396 !appInfo.packageName.equals( 397 mContext.getString(R.string.certinstaller_package))) { 398 return mContext.getString(R.string.saved_network, appInfo.loadLabel(pm)); 399 } 400 } 401 return ""; 402 } 403 404 public String getSummary() { 405 return getSettingsSummary(); 406 } 407 408 public String getSettingsSummary() { 409 // Update to new summary 410 StringBuilder summary = new StringBuilder(); 411 412 if (isActive() && mConfig != null && mConfig.isPasspoint()) { 413 // This is the active connection on passpoint 414 summary.append(getSummary(mContext, getDetailedState(), 415 false, mConfig.providerFriendlyName)); 416 } else if (isActive()) { 417 // This is the active connection on non-passpoint network 418 summary.append(getSummary(mContext, getDetailedState(), 419 mInfo != null && mInfo.isEphemeral())); 420 } else if (mConfig != null && mConfig.isPasspoint()) { 421 String format = mContext.getString(R.string.available_via_passpoint); 422 summary.append(String.format(format, mConfig.providerFriendlyName)); 423 } else if (mConfig != null && mConfig.hasNoInternetAccess()) { 424 summary.append(mContext.getString(R.string.wifi_no_internet)); 425 } else if (mConfig != null && !mConfig.getNetworkSelectionStatus().isNetworkEnabled()) { 426 WifiConfiguration.NetworkSelectionStatus networkStatus = 427 mConfig.getNetworkSelectionStatus(); 428 switch (networkStatus.getNetworkSelectionDisableReason()) { 429 case WifiConfiguration.NetworkSelectionStatus.DISABLED_AUTHENTICATION_FAILURE: 430 summary.append(mContext.getString(R.string.wifi_disabled_password_failure)); 431 break; 432 case WifiConfiguration.NetworkSelectionStatus.DISABLED_DHCP_FAILURE: 433 case WifiConfiguration.NetworkSelectionStatus.DISABLED_DNS_FAILURE: 434 summary.append(mContext.getString(R.string.wifi_disabled_network_failure)); 435 break; 436 case WifiConfiguration.NetworkSelectionStatus.DISABLED_ASSOCIATION_REJECTION: 437 summary.append(mContext.getString(R.string.wifi_disabled_generic)); 438 break; 439 } 440 } else if (mRssi == Integer.MAX_VALUE) { // Wifi out of range 441 summary.append(mContext.getString(R.string.wifi_not_in_range)); 442 } else { // In range, not disabled. 443 if (mConfig != null) { // Is saved network 444 summary.append(mContext.getString(R.string.wifi_remembered)); 445 } 446 } 447 448 if (WifiTracker.sVerboseLogging > 0) { 449 // Add RSSI/band information for this config, what was seen up to 6 seconds ago 450 // verbose WiFi Logging is only turned on thru developers settings 451 if (mInfo != null && mNetworkInfo != null) { // This is the active connection 452 summary.append(" f=" + Integer.toString(mInfo.getFrequency())); 453 } 454 summary.append(" " + getVisibilityStatus()); 455 if (mConfig != null && !mConfig.getNetworkSelectionStatus().isNetworkEnabled()) { 456 summary.append(" (" + mConfig.getNetworkSelectionStatus().getNetworkStatusString()); 457 if (mConfig.getNetworkSelectionStatus().getDisableTime() > 0) { 458 long now = System.currentTimeMillis(); 459 long diff = (now - mConfig.getNetworkSelectionStatus().getDisableTime()) / 1000; 460 long sec = diff%60; //seconds 461 long min = (diff/60)%60; //minutes 462 long hour = (min/60)%60; //hours 463 summary.append(", "); 464 if (hour > 0) summary.append(Long.toString(hour) + "h "); 465 summary.append( Long.toString(min) + "m "); 466 summary.append( Long.toString(sec) + "s "); 467 } 468 summary.append(")"); 469 } 470 471 if (mConfig != null) { 472 WifiConfiguration.NetworkSelectionStatus networkStatus = 473 mConfig.getNetworkSelectionStatus(); 474 for (int index = WifiConfiguration.NetworkSelectionStatus.NETWORK_SELECTION_ENABLE; 475 index < WifiConfiguration.NetworkSelectionStatus 476 .NETWORK_SELECTION_DISABLED_MAX; index++) { 477 if (networkStatus.getDisableReasonCounter(index) != 0) { 478 summary.append(" " + WifiConfiguration.NetworkSelectionStatus 479 .getNetworkDisableReasonString(index) + "=" 480 + networkStatus.getDisableReasonCounter(index)); 481 } 482 } 483 } 484 } 485 return summary.toString(); 486 } 487 488 /** 489 * Returns the visibility status of the WifiConfiguration. 490 * 491 * @return autojoin debugging information 492 * TODO: use a string formatter 493 * ["rssi 5Ghz", "num results on 5GHz" / "rssi 5Ghz", "num results on 5GHz"] 494 * For instance [-40,5/-30,2] 495 */ 496 private String getVisibilityStatus() { 497 StringBuilder visibility = new StringBuilder(); 498 StringBuilder scans24GHz = null; 499 StringBuilder scans5GHz = null; 500 String bssid = null; 501 502 long now = System.currentTimeMillis(); 503 504 if (mInfo != null) { 505 bssid = mInfo.getBSSID(); 506 if (bssid != null) { 507 visibility.append(" ").append(bssid); 508 } 509 visibility.append(" rssi=").append(mInfo.getRssi()); 510 visibility.append(" "); 511 visibility.append(" score=").append(mInfo.score); 512 visibility.append(String.format(" tx=%.1f,", mInfo.txSuccessRate)); 513 visibility.append(String.format("%.1f,", mInfo.txRetriesRate)); 514 visibility.append(String.format("%.1f ", mInfo.txBadRate)); 515 visibility.append(String.format("rx=%.1f", mInfo.rxSuccessRate)); 516 } 517 518 int rssi5 = WifiConfiguration.INVALID_RSSI; 519 int rssi24 = WifiConfiguration.INVALID_RSSI; 520 int num5 = 0; 521 int num24 = 0; 522 int numBlackListed = 0; 523 int n24 = 0; // Number scan results we included in the string 524 int n5 = 0; // Number scan results we included in the string 525 evictOldScanResults(); 526 // TODO: sort list by RSSI or age 527 for (ScanResult result : mScanResultCache.values()) { 528 529 if (result.frequency >= LOWER_FREQ_5GHZ 530 && result.frequency <= HIGHER_FREQ_5GHZ) { 531 // Strictly speaking: [4915, 5825] 532 // number of known BSSID on 5GHz band 533 num5 = num5 + 1; 534 } else if (result.frequency >= LOWER_FREQ_24GHZ 535 && result.frequency <= HIGHER_FREQ_24GHZ) { 536 // Strictly speaking: [2412, 2482] 537 // number of known BSSID on 2.4Ghz band 538 num24 = num24 + 1; 539 } 540 541 542 if (result.frequency >= LOWER_FREQ_5GHZ 543 && result.frequency <= HIGHER_FREQ_5GHZ) { 544 if (result.level > rssi5) { 545 rssi5 = result.level; 546 } 547 if (n5 < 4) { 548 if (scans5GHz == null) scans5GHz = new StringBuilder(); 549 scans5GHz.append(" \n{").append(result.BSSID); 550 if (bssid != null && result.BSSID.equals(bssid)) scans5GHz.append("*"); 551 scans5GHz.append("=").append(result.frequency); 552 scans5GHz.append(",").append(result.level); 553 scans5GHz.append("}"); 554 n5++; 555 } 556 } else if (result.frequency >= LOWER_FREQ_24GHZ 557 && result.frequency <= HIGHER_FREQ_24GHZ) { 558 if (result.level > rssi24) { 559 rssi24 = result.level; 560 } 561 if (n24 < 4) { 562 if (scans24GHz == null) scans24GHz = new StringBuilder(); 563 scans24GHz.append(" \n{").append(result.BSSID); 564 if (bssid != null && result.BSSID.equals(bssid)) scans24GHz.append("*"); 565 scans24GHz.append("=").append(result.frequency); 566 scans24GHz.append(",").append(result.level); 567 scans24GHz.append("}"); 568 n24++; 569 } 570 } 571 } 572 visibility.append(" ["); 573 if (num24 > 0) { 574 visibility.append("(").append(num24).append(")"); 575 if (n24 <= 4) { 576 if (scans24GHz != null) { 577 visibility.append(scans24GHz.toString()); 578 } 579 } else { 580 visibility.append("max=").append(rssi24); 581 if (scans24GHz != null) { 582 visibility.append(",").append(scans24GHz.toString()); 583 } 584 } 585 } 586 visibility.append(";"); 587 if (num5 > 0) { 588 visibility.append("(").append(num5).append(")"); 589 if (n5 <= 4) { 590 if (scans5GHz != null) { 591 visibility.append(scans5GHz.toString()); 592 } 593 } else { 594 visibility.append("max=").append(rssi5); 595 if (scans5GHz != null) { 596 visibility.append(",").append(scans5GHz.toString()); 597 } 598 } 599 } 600 if (numBlackListed > 0) 601 visibility.append("!").append(numBlackListed); 602 visibility.append("]"); 603 604 return visibility.toString(); 605 } 606 607 /** 608 * Return whether this is the active connection. 609 * For ephemeral connections (networkId is invalid), this returns false if the network is 610 * disconnected. 611 */ 612 public boolean isActive() { 613 return mNetworkInfo != null && 614 (networkId != WifiConfiguration.INVALID_NETWORK_ID || 615 mNetworkInfo.getState() != State.DISCONNECTED); 616 } 617 618 public boolean isConnectable() { 619 return getLevel() != -1 && getDetailedState() == null; 620 } 621 622 public boolean isEphemeral() { 623 return mInfo != null && mInfo.isEphemeral() && 624 mNetworkInfo != null && mNetworkInfo.getState() != State.DISCONNECTED; 625 } 626 627 public boolean isPasspoint() { 628 return mConfig != null && mConfig.isPasspoint(); 629 } 630 631 /** 632 * Return whether the given {@link WifiInfo} is for this access point. 633 * If the current AP does not have a network Id then the config is used to 634 * match based on SSID and security. 635 */ 636 private boolean isInfoForThisAccessPoint(WifiConfiguration config, WifiInfo info) { 637 if (isPasspoint() == false && networkId != WifiConfiguration.INVALID_NETWORK_ID) { 638 return networkId == info.getNetworkId(); 639 } else if (config != null) { 640 return matches(config); 641 } 642 else { 643 // Might be an ephemeral connection with no WifiConfiguration. Try matching on SSID. 644 // (Note that we only do this if the WifiConfiguration explicitly equals INVALID). 645 // TODO: Handle hex string SSIDs. 646 return ssid.equals(removeDoubleQuotes(info.getSSID())); 647 } 648 } 649 650 public boolean isSaved() { 651 return networkId != WifiConfiguration.INVALID_NETWORK_ID; 652 } 653 654 public Object getTag() { 655 return mTag; 656 } 657 658 public void setTag(Object tag) { 659 mTag = tag; 660 } 661 662 /** 663 * Generate and save a default wifiConfiguration with common values. 664 * Can only be called for unsecured networks. 665 */ 666 public void generateOpenNetworkConfig() { 667 if (security != SECURITY_NONE) 668 throw new IllegalStateException(); 669 if (mConfig != null) 670 return; 671 mConfig = new WifiConfiguration(); 672 mConfig.SSID = AccessPoint.convertToQuotedString(ssid); 673 mConfig.allowedKeyManagement.set(KeyMgmt.NONE); 674 } 675 676 void loadConfig(WifiConfiguration config) { 677 if (config.isPasspoint()) 678 ssid = config.providerFriendlyName; 679 else 680 ssid = (config.SSID == null ? "" : removeDoubleQuotes(config.SSID)); 681 682 bssid = config.BSSID; 683 security = getSecurity(config); 684 networkId = config.networkId; 685 mConfig = config; 686 } 687 688 private void initWithScanResult(ScanResult result) { 689 ssid = result.SSID; 690 bssid = result.BSSID; 691 security = getSecurity(result); 692 if (security == SECURITY_PSK) 693 pskType = getPskType(result); 694 mRssi = result.level; 695 mSeen = result.timestamp; 696 } 697 698 public void saveWifiState(Bundle savedState) { 699 if (ssid != null) savedState.putString(KEY_SSID, getSsidStr()); 700 savedState.putInt(KEY_SECURITY, security); 701 savedState.putInt(KEY_PSKTYPE, pskType); 702 if (mConfig != null) savedState.putParcelable(KEY_CONFIG, mConfig); 703 savedState.putParcelable(KEY_WIFIINFO, mInfo); 704 evictOldScanResults(); 705 savedState.putParcelableArrayList(KEY_SCANRESULTCACHE, 706 new ArrayList<ScanResult>(mScanResultCache.values())); 707 if (mNetworkInfo != null) { 708 savedState.putParcelable(KEY_NETWORKINFO, mNetworkInfo); 709 } 710 } 711 712 public void setListener(AccessPointListener listener) { 713 mAccessPointListener = listener; 714 } 715 716 boolean update(ScanResult result) { 717 if (matches(result)) { 718 /* Add or update the scan result for the BSSID */ 719 mScanResultCache.put(result.BSSID, result); 720 721 int oldLevel = getLevel(); 722 int oldRssi = getRssi(); 723 mSeen = getSeen(); 724 mRssi = (getRssi() + oldRssi)/2; 725 int newLevel = getLevel(); 726 727 if (newLevel > 0 && newLevel != oldLevel && mAccessPointListener != null) { 728 mAccessPointListener.onLevelChanged(this); 729 } 730 // This flag only comes from scans, is not easily saved in config 731 if (security == SECURITY_PSK) { 732 pskType = getPskType(result); 733 } 734 735 if (mAccessPointListener != null) { 736 mAccessPointListener.onAccessPointChanged(this); 737 } 738 739 return true; 740 } 741 return false; 742 } 743 744 boolean update(WifiConfiguration config, WifiInfo info, NetworkInfo networkInfo) { 745 boolean reorder = false; 746 if (info != null && isInfoForThisAccessPoint(config, info)) { 747 reorder = (mInfo == null); 748 mRssi = info.getRssi(); 749 mInfo = info; 750 mNetworkInfo = networkInfo; 751 if (mAccessPointListener != null) { 752 mAccessPointListener.onAccessPointChanged(this); 753 } 754 } else if (mInfo != null) { 755 reorder = true; 756 mInfo = null; 757 mNetworkInfo = null; 758 if (mAccessPointListener != null) { 759 mAccessPointListener.onAccessPointChanged(this); 760 } 761 } 762 return reorder; 763 } 764 765 void update(WifiConfiguration config) { 766 mConfig = config; 767 networkId = config.networkId; 768 if (mAccessPointListener != null) { 769 mAccessPointListener.onAccessPointChanged(this); 770 } 771 } 772 773 void setRssi(int rssi) { 774 mRssi = rssi; 775 } 776 777 public static String getSummary(Context context, String ssid, DetailedState state, 778 boolean isEphemeral, String passpointProvider) { 779 if (state == DetailedState.CONNECTED && ssid == null) { 780 if (TextUtils.isEmpty(passpointProvider) == false) { 781 // Special case for connected + passpoint networks. 782 String format = context.getString(R.string.connected_via_passpoint); 783 return String.format(format, passpointProvider); 784 } else if (isEphemeral) { 785 // Special case for connected + ephemeral networks. 786 return context.getString(R.string.connected_via_wfa); 787 } 788 } 789 790 // Case when there is wifi connected without internet connectivity. 791 final ConnectivityManager cm = (ConnectivityManager) 792 context.getSystemService(Context.CONNECTIVITY_SERVICE); 793 if (state == DetailedState.CONNECTED) { 794 IWifiManager wifiManager = IWifiManager.Stub.asInterface( 795 ServiceManager.getService(Context.WIFI_SERVICE)); 796 Network nw; 797 798 try { 799 nw = wifiManager.getCurrentNetwork(); 800 } catch (RemoteException e) { 801 nw = null; 802 } 803 NetworkCapabilities nc = cm.getNetworkCapabilities(nw); 804 if (nc != null && !nc.hasCapability(nc.NET_CAPABILITY_VALIDATED)) { 805 return context.getString(R.string.wifi_connected_no_internet); 806 } 807 } 808 809 String[] formats = context.getResources().getStringArray((ssid == null) 810 ? R.array.wifi_status : R.array.wifi_status_with_ssid); 811 int index = state.ordinal(); 812 813 if (index >= formats.length || formats[index].length() == 0) { 814 return ""; 815 } 816 return String.format(formats[index], ssid); 817 } 818 819 public static String getSummary(Context context, DetailedState state, boolean isEphemeral) { 820 return getSummary(context, null, state, isEphemeral, null); 821 } 822 823 public static String getSummary(Context context, DetailedState state, boolean isEphemeral, 824 String passpointProvider) { 825 return getSummary(context, null, state, isEphemeral, passpointProvider); 826 } 827 828 public static String convertToQuotedString(String string) { 829 return "\"" + string + "\""; 830 } 831 832 private static int getPskType(ScanResult result) { 833 boolean wpa = result.capabilities.contains("WPA-PSK"); 834 boolean wpa2 = result.capabilities.contains("WPA2-PSK"); 835 if (wpa2 && wpa) { 836 return PSK_WPA_WPA2; 837 } else if (wpa2) { 838 return PSK_WPA2; 839 } else if (wpa) { 840 return PSK_WPA; 841 } else { 842 Log.w(TAG, "Received abnormal flag string: " + result.capabilities); 843 return PSK_UNKNOWN; 844 } 845 } 846 847 private static int getSecurity(ScanResult result) { 848 if (result.capabilities.contains("WEP")) { 849 return SECURITY_WEP; 850 } else if (result.capabilities.contains("PSK")) { 851 return SECURITY_PSK; 852 } else if (result.capabilities.contains("EAP")) { 853 return SECURITY_EAP; 854 } 855 return SECURITY_NONE; 856 } 857 858 static int getSecurity(WifiConfiguration config) { 859 if (config.allowedKeyManagement.get(KeyMgmt.WPA_PSK)) { 860 return SECURITY_PSK; 861 } 862 if (config.allowedKeyManagement.get(KeyMgmt.WPA_EAP) || 863 config.allowedKeyManagement.get(KeyMgmt.IEEE8021X)) { 864 return SECURITY_EAP; 865 } 866 return (config.wepKeys[0] != null) ? SECURITY_WEP : SECURITY_NONE; 867 } 868 869 public static String securityToString(int security, int pskType) { 870 if (security == SECURITY_WEP) { 871 return "WEP"; 872 } else if (security == SECURITY_PSK) { 873 if (pskType == PSK_WPA) { 874 return "WPA"; 875 } else if (pskType == PSK_WPA2) { 876 return "WPA2"; 877 } else if (pskType == PSK_WPA_WPA2) { 878 return "WPA_WPA2"; 879 } 880 return "PSK"; 881 } else if (security == SECURITY_EAP) { 882 return "EAP"; 883 } 884 return "NONE"; 885 } 886 887 static String removeDoubleQuotes(String string) { 888 if (TextUtils.isEmpty(string)) { 889 return ""; 890 } 891 int length = string.length(); 892 if ((length > 1) && (string.charAt(0) == '"') 893 && (string.charAt(length - 1) == '"')) { 894 return string.substring(1, length - 1); 895 } 896 return string; 897 } 898 899 public interface AccessPointListener { 900 void onAccessPointChanged(AccessPoint accessPoint); 901 void onLevelChanged(AccessPoint accessPoint); 902 } 903} 904