AccessPoint.java revision c7a38ef8405443648688a7950378ac4e4ebb3ae5
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.UserHandle; 40import android.text.Spannable; 41import android.text.SpannableString; 42import android.text.TextUtils; 43import android.text.style.TtsSpan; 44import android.util.Log; 45import android.util.LruCache; 46 47import com.android.settingslib.R; 48 49import java.util.ArrayList; 50import java.util.Map; 51 52 53public class AccessPoint implements Comparable<AccessPoint> { 54 static final String TAG = "SettingsLib.AccessPoint"; 55 56 /** 57 * Lower bound on the 2.4 GHz (802.11b/g/n) WLAN channels 58 */ 59 public static final int LOWER_FREQ_24GHZ = 2400; 60 61 /** 62 * Upper bound on the 2.4 GHz (802.11b/g/n) WLAN channels 63 */ 64 public static final int HIGHER_FREQ_24GHZ = 2500; 65 66 /** 67 * Lower bound on the 5.0 GHz (802.11a/h/j/n/ac) WLAN channels 68 */ 69 public static final int LOWER_FREQ_5GHZ = 4900; 70 71 /** 72 * Upper bound on the 5.0 GHz (802.11a/h/j/n/ac) WLAN channels 73 */ 74 public static final int HIGHER_FREQ_5GHZ = 5900; 75 76 77 /** 78 * Experimental: we should be able to show the user the list of BSSIDs and bands 79 * for that SSID. 80 * For now this data is used only with Verbose Logging so as to show the band and number 81 * of BSSIDs on which that network is seen. 82 */ 83 public LruCache<String, ScanResult> mScanResultCache = new LruCache<String, ScanResult>(32); 84 85 private static final String KEY_NETWORKINFO = "key_networkinfo"; 86 private static final String KEY_WIFIINFO = "key_wifiinfo"; 87 private static final String KEY_SCANRESULT = "key_scanresult"; 88 private static final String KEY_SSID = "key_ssid"; 89 private static final String KEY_SECURITY = "key_security"; 90 private static final String KEY_PSKTYPE = "key_psktype"; 91 private static final String KEY_SCANRESULTCACHE = "key_scanresultcache"; 92 private static final String KEY_CONFIG = "key_config"; 93 94 /** 95 * These values are matched in string arrays -- changes must be kept in sync 96 */ 97 public static final int SECURITY_NONE = 0; 98 public static final int SECURITY_WEP = 1; 99 public static final int SECURITY_PSK = 2; 100 public static final int SECURITY_EAP = 3; 101 102 private static final int PSK_UNKNOWN = 0; 103 private static final int PSK_WPA = 1; 104 private static final int PSK_WPA2 = 2; 105 private static final int PSK_WPA_WPA2 = 3; 106 107 private static final int VISIBILITY_OUTDATED_AGE_IN_MILLI = 20000; 108 private final Context mContext; 109 110 private String ssid; 111 private int security; 112 private int networkId = WifiConfiguration.INVALID_NETWORK_ID; 113 114 private int pskType = PSK_UNKNOWN; 115 116 private WifiConfiguration mConfig; 117 118 private int mRssi = Integer.MAX_VALUE; 119 private long mSeen = 0; 120 121 private WifiInfo mInfo; 122 private NetworkInfo mNetworkInfo; 123 private AccessPointListener mAccessPointListener; 124 125 private Object mTag; 126 127 public AccessPoint(Context context, Bundle savedState) { 128 mContext = context; 129 mConfig = savedState.getParcelable(KEY_CONFIG); 130 if (mConfig != null) { 131 loadConfig(mConfig); 132 } 133 if (savedState.containsKey(KEY_SSID)) { 134 ssid = savedState.getString(KEY_SSID); 135 } 136 if (savedState.containsKey(KEY_SECURITY)) { 137 security = savedState.getInt(KEY_SECURITY); 138 } 139 if (savedState.containsKey(KEY_PSKTYPE)) { 140 pskType = savedState.getInt(KEY_PSKTYPE); 141 } 142 mInfo = (WifiInfo) savedState.getParcelable(KEY_WIFIINFO); 143 if (savedState.containsKey(KEY_NETWORKINFO)) { 144 mNetworkInfo = savedState.getParcelable(KEY_NETWORKINFO); 145 } 146 if (savedState.containsKey(KEY_SCANRESULTCACHE)) { 147 ArrayList<ScanResult> scanResultArrayList = 148 savedState.getParcelableArrayList(KEY_SCANRESULTCACHE); 149 mScanResultCache.evictAll(); 150 for (ScanResult result : scanResultArrayList) { 151 mScanResultCache.put(result.BSSID, result); 152 } 153 } 154 update(mInfo, mNetworkInfo); 155 mRssi = getRssi(); 156 mSeen = getSeen(); 157 } 158 159 AccessPoint(Context context, ScanResult result) { 160 mContext = context; 161 initWithScanResult(result); 162 } 163 164 AccessPoint(Context context, WifiConfiguration config) { 165 mContext = context; 166 loadConfig(config); 167 } 168 169 @Override 170 public int compareTo(AccessPoint other) { 171 // Active one goes first. 172 if (isActive() && !other.isActive()) return -1; 173 if (!isActive() && other.isActive()) return 1; 174 175 // Reachable one goes before unreachable one. 176 if (mRssi != Integer.MAX_VALUE && other.mRssi == Integer.MAX_VALUE) return -1; 177 if (mRssi == Integer.MAX_VALUE && other.mRssi != Integer.MAX_VALUE) return 1; 178 179 // Configured one goes before unconfigured one. 180 if (networkId != WifiConfiguration.INVALID_NETWORK_ID 181 && other.networkId == WifiConfiguration.INVALID_NETWORK_ID) return -1; 182 if (networkId == WifiConfiguration.INVALID_NETWORK_ID 183 && other.networkId != WifiConfiguration.INVALID_NETWORK_ID) return 1; 184 185 // Sort by signal strength. 186 int difference = WifiManager.compareSignalLevel(other.mRssi, mRssi); 187 if (difference != 0) { 188 return difference; 189 } 190 // Sort by ssid. 191 return ssid.compareToIgnoreCase(other.ssid); 192 } 193 194 @Override 195 public boolean equals(Object other) { 196 if (!(other instanceof AccessPoint)) return false; 197 return (this.compareTo((AccessPoint) other) == 0); 198 } 199 200 @Override 201 public int hashCode() { 202 int result = 0; 203 if (mInfo != null) result += 13 * mInfo.hashCode(); 204 result += 19 * mRssi; 205 result += 23 * networkId; 206 result += 29 * ssid.hashCode(); 207 return result; 208 } 209 210 @Override 211 public String toString() { 212 StringBuilder builder = new StringBuilder().append("AccessPoint(") 213 .append(ssid); 214 if (isSaved()) { 215 builder.append(',').append("saved"); 216 } 217 if (isActive()) { 218 builder.append(',').append("active"); 219 } 220 if (isEphemeral()) { 221 builder.append(',').append("ephemeral"); 222 } 223 if (isConnectable()) { 224 builder.append(',').append("connectable"); 225 } 226 if (security != SECURITY_NONE) { 227 builder.append(',').append(securityToString(security, pskType)); 228 } 229 return builder.append(')').toString(); 230 } 231 232 public boolean matches(ScanResult result) { 233 return ssid.equals(result.SSID) && security == getSecurity(result); 234 } 235 236 public boolean matches(WifiConfiguration config) { 237 if (config.isPasspoint() && mConfig != null && mConfig.isPasspoint()) 238 return config.FQDN.equals(mConfig.providerFriendlyName); 239 else 240 return ssid.equals(removeDoubleQuotes(config.SSID)) && security == getSecurity(config); 241 } 242 243 public WifiConfiguration getConfig() { 244 return mConfig; 245 } 246 247 public void clearConfig() { 248 mConfig = null; 249 networkId = WifiConfiguration.INVALID_NETWORK_ID; 250 } 251 252 public WifiInfo getInfo() { 253 return mInfo; 254 } 255 256 public int getLevel() { 257 if (mRssi == Integer.MAX_VALUE) { 258 return -1; 259 } 260 return WifiManager.calculateSignalLevel(mRssi, 4); 261 } 262 263 public int getRssi() { 264 int rssi = Integer.MIN_VALUE; 265 for (ScanResult result : mScanResultCache.snapshot().values()) { 266 if (result.level > rssi) { 267 rssi = result.level; 268 } 269 } 270 271 return rssi; 272 } 273 274 public long getSeen() { 275 long seen = 0; 276 for (ScanResult result : mScanResultCache.snapshot().values()) { 277 if (result.timestamp > seen) { 278 seen = result.timestamp; 279 } 280 } 281 282 return seen; 283 } 284 285 public NetworkInfo getNetworkInfo() { 286 return mNetworkInfo; 287 } 288 289 public int getSecurity() { 290 return security; 291 } 292 293 public String getSecurityString(boolean concise) { 294 Context context = mContext; 295 if (mConfig != null && mConfig.isPasspoint()) { 296 return context.getString(R.string.wifi_security_passpoint); 297 } 298 switch(security) { 299 case SECURITY_EAP: 300 return concise ? context.getString(R.string.wifi_security_short_eap) : 301 context.getString(R.string.wifi_security_eap); 302 case SECURITY_PSK: 303 switch (pskType) { 304 case PSK_WPA: 305 return concise ? context.getString(R.string.wifi_security_short_wpa) : 306 context.getString(R.string.wifi_security_wpa); 307 case PSK_WPA2: 308 return concise ? context.getString(R.string.wifi_security_short_wpa2) : 309 context.getString(R.string.wifi_security_wpa2); 310 case PSK_WPA_WPA2: 311 return concise ? context.getString(R.string.wifi_security_short_wpa_wpa2) : 312 context.getString(R.string.wifi_security_wpa_wpa2); 313 case PSK_UNKNOWN: 314 default: 315 return concise ? context.getString(R.string.wifi_security_short_psk_generic) 316 : context.getString(R.string.wifi_security_psk_generic); 317 } 318 case SECURITY_WEP: 319 return concise ? context.getString(R.string.wifi_security_short_wep) : 320 context.getString(R.string.wifi_security_wep); 321 case SECURITY_NONE: 322 default: 323 return concise ? "" : context.getString(R.string.wifi_security_none); 324 } 325 } 326 327 public String getSsidStr() { 328 return ssid; 329 } 330 331 public CharSequence getSsid() { 332 SpannableString str = new SpannableString(ssid); 333 str.setSpan(new TtsSpan.VerbatimBuilder(ssid).build(), 0, ssid.length(), 334 Spannable.SPAN_INCLUSIVE_INCLUSIVE); 335 return str; 336 } 337 338 public String getConfigName() { 339 if (mConfig != null && mConfig.isPasspoint()) { 340 return mConfig.providerFriendlyName; 341 } else { 342 return ssid; 343 } 344 } 345 346 public DetailedState getDetailedState() { 347 return mNetworkInfo != null ? mNetworkInfo.getDetailedState() : null; 348 } 349 350 public String getSavedNetworkSummary() { 351 if (mConfig != null) { 352 PackageManager pm = mContext.getPackageManager(); 353 String systemName = pm.getNameForUid(android.os.Process.SYSTEM_UID); 354 int userId = UserHandle.getUserId(mConfig.creatorUid); 355 ApplicationInfo appInfo = null; 356 if (mConfig.creatorName != null && mConfig.creatorName.equals(systemName)) { 357 appInfo = mContext.getApplicationInfo(); 358 } else { 359 try { 360 IPackageManager ipm = AppGlobals.getPackageManager(); 361 appInfo = ipm.getApplicationInfo(mConfig.creatorName, 0 /* flags */, userId); 362 } catch (RemoteException rex) { 363 } 364 } 365 if (appInfo != null && 366 !appInfo.packageName.equals(mContext.getString(R.string.settings_package)) && 367 !appInfo.packageName.equals( 368 mContext.getString(R.string.certinstaller_package))) { 369 return mContext.getString(R.string.saved_network, appInfo.loadLabel(pm)); 370 } 371 } 372 return ""; 373 } 374 375 public String getSummary() { 376 return getSettingsSummary(); 377 } 378 379 public String getSettingsSummary() { 380 // Update to new summary 381 StringBuilder summary = new StringBuilder(); 382 383 if (isActive() && mConfig != null && mConfig.isPasspoint()) { 384 // This is the active connection on passpoint 385 summary.append(getSummary(mContext, getDetailedState(), 386 false, mConfig.providerFriendlyName)); 387 } else if (isActive()) { 388 // This is the active connection on non-passpoint network 389 summary.append(getSummary(mContext, getDetailedState(), 390 mInfo != null && mInfo.isEphemeral())); 391 } else if (mConfig != null && mConfig.isPasspoint()) { 392 String format = mContext.getString(R.string.available_via_passpoint); 393 summary.append(String.format(format, mConfig.providerFriendlyName)); 394 } else if (mConfig != null && mConfig.hasNoInternetAccess()) { 395 summary.append(mContext.getString(R.string.wifi_no_internet)); 396 } else if (mConfig != null && ((mConfig.status == WifiConfiguration.Status.DISABLED && 397 mConfig.disableReason != WifiConfiguration.DISABLED_UNKNOWN_REASON) 398 || mConfig.autoJoinStatus 399 >= WifiConfiguration.AUTO_JOIN_DISABLED_ON_AUTH_FAILURE)) { 400 if (mConfig.autoJoinStatus 401 >= WifiConfiguration.AUTO_JOIN_DISABLED_ON_AUTH_FAILURE) { 402 if (mConfig.disableReason == WifiConfiguration.DISABLED_DHCP_FAILURE) { 403 summary.append(mContext.getString(R.string.wifi_disabled_network_failure)); 404 } else if (mConfig.disableReason == WifiConfiguration.DISABLED_AUTH_FAILURE) { 405 summary.append(mContext.getString(R.string.wifi_disabled_password_failure)); 406 } else { 407 summary.append(mContext.getString(R.string.wifi_disabled_wifi_failure)); 408 } 409 } else { 410 switch (mConfig.disableReason) { 411 case WifiConfiguration.DISABLED_AUTH_FAILURE: 412 summary.append(mContext.getString(R.string.wifi_disabled_password_failure)); 413 break; 414 case WifiConfiguration.DISABLED_DHCP_FAILURE: 415 case WifiConfiguration.DISABLED_DNS_FAILURE: 416 summary.append(mContext.getString(R.string.wifi_disabled_network_failure)); 417 break; 418 case WifiConfiguration.DISABLED_UNKNOWN_REASON: 419 case WifiConfiguration.DISABLED_ASSOCIATION_REJECT: 420 summary.append(mContext.getString(R.string.wifi_disabled_generic)); 421 break; 422 } 423 } 424 } else if (mRssi == Integer.MAX_VALUE) { // Wifi out of range 425 summary.append(mContext.getString(R.string.wifi_not_in_range)); 426 } else { // In range, not disabled. 427 if (mConfig != null) { // Is saved network 428 summary.append(mContext.getString(R.string.wifi_remembered)); 429 } 430 } 431 432 if (WifiTracker.sVerboseLogging > 0) { 433 // Add RSSI/band information for this config, what was seen up to 6 seconds ago 434 // verbose WiFi Logging is only turned on thru developers settings 435 if (mInfo != null && mNetworkInfo != null) { // This is the active connection 436 summary.append(" f=" + Integer.toString(mInfo.getFrequency())); 437 } 438 summary.append(" " + getVisibilityStatus()); 439 if (mConfig != null && mConfig.autoJoinStatus > 0) { 440 summary.append(" (" + mConfig.autoJoinStatus); 441 if (mConfig.blackListTimestamp > 0) { 442 long now = System.currentTimeMillis(); 443 long diff = (now - mConfig.blackListTimestamp)/1000; 444 long sec = diff%60; //seconds 445 long min = (diff/60)%60; //minutes 446 long hour = (min/60)%60; //hours 447 summary.append(", "); 448 if (hour > 0) summary.append(Long.toString(hour) + "h "); 449 summary.append( Long.toString(min) + "m "); 450 summary.append( Long.toString(sec) + "s "); 451 } 452 summary.append(")"); 453 } 454 if (mConfig != null && mConfig.numIpConfigFailures > 0) { 455 summary.append(" ipf=").append(mConfig.numIpConfigFailures); 456 } 457 if (mConfig != null && mConfig.numConnectionFailures > 0) { 458 summary.append(" cf=").append(mConfig.numConnectionFailures); 459 } 460 if (mConfig != null && mConfig.numAuthFailures > 0) { 461 summary.append(" authf=").append(mConfig.numAuthFailures); 462 } 463 if (mConfig != null && mConfig.numNoInternetAccessReports > 0) { 464 summary.append(" noInt=").append(mConfig.numNoInternetAccessReports); 465 } 466 } 467 return summary.toString(); 468 } 469 470 /** 471 * Returns the visibility status of the WifiConfiguration. 472 * 473 * @return autojoin debugging information 474 * TODO: use a string formatter 475 * ["rssi 5Ghz", "num results on 5GHz" / "rssi 5Ghz", "num results on 5GHz"] 476 * For instance [-40,5/-30,2] 477 */ 478 private String getVisibilityStatus() { 479 StringBuilder visibility = new StringBuilder(); 480 StringBuilder scans24GHz = null; 481 StringBuilder scans5GHz = null; 482 String bssid = null; 483 484 long now = System.currentTimeMillis(); 485 486 if (mInfo != null) { 487 bssid = mInfo.getBSSID(); 488 if (bssid != null) { 489 visibility.append(" ").append(bssid); 490 } 491 visibility.append(" rssi=").append(mInfo.getRssi()); 492 visibility.append(" "); 493 visibility.append(" score=").append(mInfo.score); 494 visibility.append(String.format(" tx=%.1f,", mInfo.txSuccessRate)); 495 visibility.append(String.format("%.1f,", mInfo.txRetriesRate)); 496 visibility.append(String.format("%.1f ", mInfo.txBadRate)); 497 visibility.append(String.format("rx=%.1f", mInfo.rxSuccessRate)); 498 } 499 500 int rssi5 = WifiConfiguration.INVALID_RSSI; 501 int rssi24 = WifiConfiguration.INVALID_RSSI; 502 int num5 = 0; 503 int num24 = 0; 504 int numBlackListed = 0; 505 int n24 = 0; // Number scan results we included in the string 506 int n5 = 0; // Number scan results we included in the string 507 Map<String, ScanResult> list = mScanResultCache.snapshot(); 508 // TODO: sort list by RSSI or age 509 for (ScanResult result : list.values()) { 510 if (result.seen == 0) 511 continue; 512 513 if (result.autoJoinStatus != ScanResult.ENABLED) numBlackListed++; 514 515 if (result.frequency >= LOWER_FREQ_5GHZ 516 && result.frequency <= HIGHER_FREQ_5GHZ) { 517 // Strictly speaking: [4915, 5825] 518 // number of known BSSID on 5GHz band 519 num5 = num5 + 1; 520 } else if (result.frequency >= LOWER_FREQ_24GHZ 521 && result.frequency <= HIGHER_FREQ_24GHZ) { 522 // Strictly speaking: [2412, 2482] 523 // number of known BSSID on 2.4Ghz band 524 num24 = num24 + 1; 525 } 526 527 // Ignore results seen, older than 20 seconds 528 if (now - result.seen > VISIBILITY_OUTDATED_AGE_IN_MILLI) continue; 529 530 if (result.frequency >= LOWER_FREQ_5GHZ 531 && result.frequency <= HIGHER_FREQ_5GHZ) { 532 if (result.level > rssi5) { 533 rssi5 = result.level; 534 } 535 if (n5 < 4) { 536 if (scans5GHz == null) scans5GHz = new StringBuilder(); 537 scans5GHz.append(" \n{").append(result.BSSID); 538 if (bssid != null && result.BSSID.equals(bssid)) scans5GHz.append("*"); 539 scans5GHz.append("=").append(result.frequency); 540 scans5GHz.append(",").append(result.level); 541 if (result.autoJoinStatus != 0) { 542 scans5GHz.append(",st=").append(result.autoJoinStatus); 543 } 544 if (result.numIpConfigFailures != 0) { 545 scans5GHz.append(",ipf=").append(result.numIpConfigFailures); 546 } 547 scans5GHz.append("}"); 548 n5++; 549 } 550 } else if (result.frequency >= LOWER_FREQ_24GHZ 551 && result.frequency <= HIGHER_FREQ_24GHZ) { 552 if (result.level > rssi24) { 553 rssi24 = result.level; 554 } 555 if (n24 < 4) { 556 if (scans24GHz == null) scans24GHz = new StringBuilder(); 557 scans24GHz.append(" \n{").append(result.BSSID); 558 if (bssid != null && result.BSSID.equals(bssid)) scans24GHz.append("*"); 559 scans24GHz.append("=").append(result.frequency); 560 scans24GHz.append(",").append(result.level); 561 if (result.autoJoinStatus != 0) { 562 scans24GHz.append(",st=").append(result.autoJoinStatus); 563 } 564 if (result.numIpConfigFailures != 0) { 565 scans24GHz.append(",ipf=").append(result.numIpConfigFailures); 566 } 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 /** Return whether the given {@link WifiInfo} is for this access point. */ 628 private boolean isInfoForThisAccessPoint(WifiInfo info) { 629 if (networkId != WifiConfiguration.INVALID_NETWORK_ID) { 630 return networkId == info.getNetworkId(); 631 } else { 632 // Might be an ephemeral connection with no WifiConfiguration. Try matching on SSID. 633 // (Note that we only do this if the WifiConfiguration explicitly equals INVALID). 634 // TODO: Handle hex string SSIDs. 635 return ssid.equals(removeDoubleQuotes(info.getSSID())); 636 } 637 } 638 639 public boolean isSaved() { 640 return networkId != WifiConfiguration.INVALID_NETWORK_ID; 641 } 642 643 public Object getTag() { 644 return mTag; 645 } 646 647 public void setTag(Object tag) { 648 mTag = tag; 649 } 650 651 /** 652 * Generate and save a default wifiConfiguration with common values. 653 * Can only be called for unsecured networks. 654 */ 655 public void generateOpenNetworkConfig() { 656 if (security != SECURITY_NONE) 657 throw new IllegalStateException(); 658 if (mConfig != null) 659 return; 660 mConfig = new WifiConfiguration(); 661 mConfig.SSID = AccessPoint.convertToQuotedString(ssid); 662 mConfig.allowedKeyManagement.set(KeyMgmt.NONE); 663 } 664 665 void loadConfig(WifiConfiguration config) { 666 if (config.isPasspoint()) 667 ssid = config.providerFriendlyName; 668 else 669 ssid = (config.SSID == null ? "" : removeDoubleQuotes(config.SSID)); 670 671 security = getSecurity(config); 672 networkId = config.networkId; 673 mConfig = config; 674 } 675 676 private void initWithScanResult(ScanResult result) { 677 ssid = result.SSID; 678 security = getSecurity(result); 679 if (security == SECURITY_PSK) 680 pskType = getPskType(result); 681 mRssi = result.level; 682 mSeen = result.timestamp; 683 } 684 685 public void saveWifiState(Bundle savedState) { 686 if (ssid != null) savedState.putString(KEY_SSID, getSsidStr()); 687 savedState.putInt(KEY_SECURITY, security); 688 savedState.putInt(KEY_PSKTYPE, pskType); 689 if (mConfig != null) savedState.putParcelable(KEY_CONFIG, mConfig); 690 savedState.putParcelable(KEY_WIFIINFO, mInfo); 691 savedState.putParcelableArrayList(KEY_SCANRESULTCACHE, 692 new ArrayList<ScanResult>(mScanResultCache.snapshot().values())); 693 if (mNetworkInfo != null) { 694 savedState.putParcelable(KEY_NETWORKINFO, mNetworkInfo); 695 } 696 } 697 698 public void setListener(AccessPointListener listener) { 699 mAccessPointListener = listener; 700 } 701 702 boolean update(ScanResult result) { 703 if (ssid.equals(result.SSID) && security == getSecurity(result)) { 704 /* Update the LRU timestamp, if BSSID exists */ 705 mScanResultCache.get(result.BSSID); 706 707 /* Add or update the scan result for the BSSID */ 708 mScanResultCache.put(result.BSSID, result); 709 710 int oldLevel = getLevel(); 711 int oldRssi = getRssi(); 712 mSeen = getSeen(); 713 mRssi = (getRssi() + oldRssi)/2; 714 int newLevel = getLevel(); 715 716 if (newLevel > 0 && newLevel != oldLevel && mAccessPointListener != null) { 717 mAccessPointListener.onLevelChanged(this); 718 } 719 // This flag only comes from scans, is not easily saved in config 720 if (security == SECURITY_PSK) { 721 pskType = getPskType(result); 722 } 723 724 if (mAccessPointListener != null) { 725 mAccessPointListener.onAccessPointChanged(this); 726 } 727 728 return true; 729 } 730 return false; 731 } 732 733 boolean update(WifiInfo info, NetworkInfo networkInfo) { 734 boolean reorder = false; 735 if (info != null && isInfoForThisAccessPoint(info)) { 736 reorder = (mInfo == null); 737 mRssi = info.getRssi(); 738 mInfo = info; 739 mNetworkInfo = networkInfo; 740 if (mAccessPointListener != null) { 741 mAccessPointListener.onAccessPointChanged(this); 742 } 743 } else if (mInfo != null) { 744 reorder = true; 745 mInfo = null; 746 mNetworkInfo = null; 747 if (mAccessPointListener != null) { 748 mAccessPointListener.onAccessPointChanged(this); 749 } 750 } 751 return reorder; 752 } 753 754 void update(WifiConfiguration config) { 755 mConfig = config; 756 networkId = config.networkId; 757 if (mAccessPointListener != null) { 758 mAccessPointListener.onAccessPointChanged(this); 759 } 760 } 761 762 public static String getSummary(Context context, String ssid, DetailedState state, 763 boolean isEphemeral, String passpointProvider) { 764 if (state == DetailedState.CONNECTED && ssid == null) { 765 if (TextUtils.isEmpty(passpointProvider) == false) { 766 // Special case for connected + passpoint networks. 767 String format = context.getString(R.string.connected_via_passpoint); 768 return String.format(format, passpointProvider); 769 } else if (isEphemeral) { 770 // Special case for connected + ephemeral networks. 771 return context.getString(R.string.connected_via_wfa); 772 } 773 } 774 775 // Case when there is wifi connected without internet connectivity. 776 final ConnectivityManager cm = (ConnectivityManager) 777 context.getSystemService(Context.CONNECTIVITY_SERVICE); 778 if (state == DetailedState.CONNECTED) { 779 IWifiManager wifiManager = IWifiManager.Stub.asInterface( 780 ServiceManager.getService(Context.WIFI_SERVICE)); 781 Network nw; 782 783 try { 784 nw = wifiManager.getCurrentNetwork(); 785 } catch (RemoteException e) { 786 nw = null; 787 } 788 NetworkCapabilities nc = cm.getNetworkCapabilities(nw); 789 if (nc != null && !nc.hasCapability(nc.NET_CAPABILITY_VALIDATED)) { 790 return context.getString(R.string.wifi_connected_no_internet); 791 } 792 } 793 794 String[] formats = context.getResources().getStringArray((ssid == null) 795 ? R.array.wifi_status : R.array.wifi_status_with_ssid); 796 int index = state.ordinal(); 797 798 if (index >= formats.length || formats[index].length() == 0) { 799 return ""; 800 } 801 return String.format(formats[index], ssid); 802 } 803 804 public static String getSummary(Context context, DetailedState state, boolean isEphemeral) { 805 return getSummary(context, null, state, isEphemeral, null); 806 } 807 808 public static String getSummary(Context context, DetailedState state, boolean isEphemeral, 809 String passpointProvider) { 810 return getSummary(context, null, state, isEphemeral, passpointProvider); 811 } 812 813 public static String convertToQuotedString(String string) { 814 return "\"" + string + "\""; 815 } 816 817 private static int getPskType(ScanResult result) { 818 boolean wpa = result.capabilities.contains("WPA-PSK"); 819 boolean wpa2 = result.capabilities.contains("WPA2-PSK"); 820 if (wpa2 && wpa) { 821 return PSK_WPA_WPA2; 822 } else if (wpa2) { 823 return PSK_WPA2; 824 } else if (wpa) { 825 return PSK_WPA; 826 } else { 827 Log.w(TAG, "Received abnormal flag string: " + result.capabilities); 828 return PSK_UNKNOWN; 829 } 830 } 831 832 private static int getSecurity(ScanResult result) { 833 if (result.capabilities.contains("WEP")) { 834 return SECURITY_WEP; 835 } else if (result.capabilities.contains("PSK")) { 836 return SECURITY_PSK; 837 } else if (result.capabilities.contains("EAP")) { 838 return SECURITY_EAP; 839 } 840 return SECURITY_NONE; 841 } 842 843 static int getSecurity(WifiConfiguration config) { 844 if (config.allowedKeyManagement.get(KeyMgmt.WPA_PSK)) { 845 return SECURITY_PSK; 846 } 847 if (config.allowedKeyManagement.get(KeyMgmt.WPA_EAP) || 848 config.allowedKeyManagement.get(KeyMgmt.IEEE8021X)) { 849 return SECURITY_EAP; 850 } 851 return (config.wepKeys[0] != null) ? SECURITY_WEP : SECURITY_NONE; 852 } 853 854 public static String securityToString(int security, int pskType) { 855 if (security == SECURITY_WEP) { 856 return "WEP"; 857 } else if (security == SECURITY_PSK) { 858 if (pskType == PSK_WPA) { 859 return "WPA"; 860 } else if (pskType == PSK_WPA2) { 861 return "WPA2"; 862 } else if (pskType == PSK_WPA_WPA2) { 863 return "WPA_WPA2"; 864 } 865 return "PSK"; 866 } else if (security == SECURITY_EAP) { 867 return "EAP"; 868 } 869 return "NONE"; 870 } 871 872 static String removeDoubleQuotes(String string) { 873 if (TextUtils.isEmpty(string)) { 874 return ""; 875 } 876 int length = string.length(); 877 if ((length > 1) && (string.charAt(0) == '"') 878 && (string.charAt(length - 1) == '"')) { 879 return string.substring(1, length - 1); 880 } 881 return string; 882 } 883 884 public interface AccessPointListener { 885 void onAccessPointChanged(AccessPoint accessPoint); 886 void onLevelChanged(AccessPoint accessPoint); 887 } 888} 889