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 17 package com.android.settingslib.wifi; 18 19 import android.app.AppGlobals; 20 import android.content.Context; 21 import android.content.pm.ApplicationInfo; 22 import android.content.pm.IPackageManager; 23 import android.content.pm.PackageManager; 24 import android.net.ConnectivityManager; 25 import android.net.Network; 26 import android.net.NetworkCapabilities; 27 import android.net.NetworkInfo; 28 import android.net.NetworkInfo.DetailedState; 29 import android.net.NetworkInfo.State; 30 import android.net.wifi.IWifiManager; 31 import android.net.wifi.ScanResult; 32 import android.net.wifi.WifiConfiguration; 33 import android.net.wifi.WifiConfiguration.KeyMgmt; 34 import android.net.wifi.WifiInfo; 35 import android.net.wifi.WifiManager; 36 import android.os.Bundle; 37 import android.os.RemoteException; 38 import android.os.ServiceManager; 39 import android.os.UserHandle; 40 import android.support.annotation.NonNull; 41 import android.text.Spannable; 42 import android.text.SpannableString; 43 import android.text.TextUtils; 44 import android.text.style.TtsSpan; 45 import android.util.Log; 46 import android.util.LruCache; 47 48 import com.android.settingslib.R; 49 50 import java.util.ArrayList; 51 import java.util.Map; 52 53 54 public class AccessPoint implements Comparable<AccessPoint> { 55 static final String TAG = "SettingsLib.AccessPoint"; 56 57 /** 58 * Lower bound on the 2.4 GHz (802.11b/g/n) WLAN channels 59 */ 60 public static final int LOWER_FREQ_24GHZ = 2400; 61 62 /** 63 * Upper bound on the 2.4 GHz (802.11b/g/n) WLAN channels 64 */ 65 public static final int HIGHER_FREQ_24GHZ = 2500; 66 67 /** 68 * Lower bound on the 5.0 GHz (802.11a/h/j/n/ac) WLAN channels 69 */ 70 public static final int LOWER_FREQ_5GHZ = 4900; 71 72 /** 73 * Upper bound on the 5.0 GHz (802.11a/h/j/n/ac) WLAN channels 74 */ 75 public static final int HIGHER_FREQ_5GHZ = 5900; 76 77 78 /** 79 * Experimental: we should be able to show the user the list of BSSIDs and bands 80 * for that SSID. 81 * For now this data is used only with Verbose Logging so as to show the band and number 82 * of BSSIDs on which that network is seen. 83 */ 84 public LruCache<String, ScanResult> mScanResultCache = new LruCache<String, ScanResult>(32); 85 86 private static final String KEY_NETWORKINFO = "key_networkinfo"; 87 private static final String KEY_WIFIINFO = "key_wifiinfo"; 88 private static final String KEY_SCANRESULT = "key_scanresult"; 89 private static final String KEY_SSID = "key_ssid"; 90 private static final String KEY_SECURITY = "key_security"; 91 private static final String KEY_PSKTYPE = "key_psktype"; 92 private static final String KEY_SCANRESULTCACHE = "key_scanresultcache"; 93 private static final String KEY_CONFIG = "key_config"; 94 95 /** 96 * These values are matched in string arrays -- changes must be kept in sync 97 */ 98 public static final int SECURITY_NONE = 0; 99 public static final int SECURITY_WEP = 1; 100 public static final int SECURITY_PSK = 2; 101 public static final int SECURITY_EAP = 3; 102 103 private static final int PSK_UNKNOWN = 0; 104 private static final int PSK_WPA = 1; 105 private static final int PSK_WPA2 = 2; 106 private static final int PSK_WPA_WPA2 = 3; 107 108 public static final int SIGNAL_LEVELS = 4; 109 110 private final Context mContext; 111 112 private String ssid; 113 private String bssid; 114 private int security; 115 private int networkId = WifiConfiguration.INVALID_NETWORK_ID; 116 117 private int pskType = PSK_UNKNOWN; 118 119 private WifiConfiguration mConfig; 120 121 private int mRssi = Integer.MAX_VALUE; 122 private long mSeen = 0; 123 124 private WifiInfo mInfo; 125 private NetworkInfo mNetworkInfo; 126 private AccessPointListener mAccessPointListener; 127 128 private Object mTag; 129 AccessPoint(Context context, Bundle savedState)130 public AccessPoint(Context context, Bundle savedState) { 131 mContext = context; 132 mConfig = savedState.getParcelable(KEY_CONFIG); 133 if (mConfig != null) { 134 loadConfig(mConfig); 135 } 136 if (savedState.containsKey(KEY_SSID)) { 137 ssid = savedState.getString(KEY_SSID); 138 } 139 if (savedState.containsKey(KEY_SECURITY)) { 140 security = savedState.getInt(KEY_SECURITY); 141 } 142 if (savedState.containsKey(KEY_PSKTYPE)) { 143 pskType = savedState.getInt(KEY_PSKTYPE); 144 } 145 mInfo = (WifiInfo) savedState.getParcelable(KEY_WIFIINFO); 146 if (savedState.containsKey(KEY_NETWORKINFO)) { 147 mNetworkInfo = savedState.getParcelable(KEY_NETWORKINFO); 148 } 149 if (savedState.containsKey(KEY_SCANRESULTCACHE)) { 150 ArrayList<ScanResult> scanResultArrayList = 151 savedState.getParcelableArrayList(KEY_SCANRESULTCACHE); 152 mScanResultCache.evictAll(); 153 for (ScanResult result : scanResultArrayList) { 154 mScanResultCache.put(result.BSSID, result); 155 } 156 } 157 update(mConfig, mInfo, mNetworkInfo); 158 mRssi = getRssi(); 159 mSeen = getSeen(); 160 } 161 AccessPoint(Context context, ScanResult result)162 AccessPoint(Context context, ScanResult result) { 163 mContext = context; 164 initWithScanResult(result); 165 } 166 AccessPoint(Context context, WifiConfiguration config)167 AccessPoint(Context context, WifiConfiguration config) { 168 mContext = context; 169 loadConfig(config); 170 } 171 172 @Override compareTo(@onNull AccessPoint other)173 public int compareTo(@NonNull AccessPoint other) { 174 // Active one goes first. 175 if (isActive() && !other.isActive()) return -1; 176 if (!isActive() && other.isActive()) return 1; 177 178 // Reachable one goes before unreachable one. 179 if (mRssi != Integer.MAX_VALUE && other.mRssi == Integer.MAX_VALUE) return -1; 180 if (mRssi == Integer.MAX_VALUE && other.mRssi != Integer.MAX_VALUE) return 1; 181 182 // Configured one goes before unconfigured one. 183 if (networkId != WifiConfiguration.INVALID_NETWORK_ID 184 && other.networkId == WifiConfiguration.INVALID_NETWORK_ID) return -1; 185 if (networkId == WifiConfiguration.INVALID_NETWORK_ID 186 && other.networkId != WifiConfiguration.INVALID_NETWORK_ID) return 1; 187 188 // Sort by signal strength, bucketed by level 189 int difference = WifiManager.calculateSignalLevel(other.mRssi, SIGNAL_LEVELS) 190 - WifiManager.calculateSignalLevel(mRssi, SIGNAL_LEVELS); 191 if (difference != 0) { 192 return difference; 193 } 194 // Sort by ssid. 195 return ssid.compareToIgnoreCase(other.ssid); 196 } 197 198 @Override equals(Object other)199 public boolean equals(Object other) { 200 if (!(other instanceof AccessPoint)) return false; 201 return (this.compareTo((AccessPoint) other) == 0); 202 } 203 204 @Override hashCode()205 public int hashCode() { 206 int result = 0; 207 if (mInfo != null) result += 13 * mInfo.hashCode(); 208 result += 19 * mRssi; 209 result += 23 * networkId; 210 result += 29 * ssid.hashCode(); 211 return result; 212 } 213 214 @Override toString()215 public String toString() { 216 StringBuilder builder = new StringBuilder().append("AccessPoint(") 217 .append(ssid); 218 if (isSaved()) { 219 builder.append(',').append("saved"); 220 } 221 if (isActive()) { 222 builder.append(',').append("active"); 223 } 224 if (isEphemeral()) { 225 builder.append(',').append("ephemeral"); 226 } 227 if (isConnectable()) { 228 builder.append(',').append("connectable"); 229 } 230 if (security != SECURITY_NONE) { 231 builder.append(',').append(securityToString(security, pskType)); 232 } 233 return builder.append(')').toString(); 234 } 235 matches(ScanResult result)236 public boolean matches(ScanResult result) { 237 return ssid.equals(result.SSID) && security == getSecurity(result); 238 } 239 matches(WifiConfiguration config)240 public boolean matches(WifiConfiguration config) { 241 if (config.isPasspoint() && mConfig != null && mConfig.isPasspoint()) { 242 return config.FQDN.equals(mConfig.providerFriendlyName); 243 } else { 244 return ssid.equals(removeDoubleQuotes(config.SSID)) 245 && security == getSecurity(config) 246 && (mConfig == null || mConfig.shared == config.shared); 247 } 248 } 249 getConfig()250 public WifiConfiguration getConfig() { 251 return mConfig; 252 } 253 clearConfig()254 public void clearConfig() { 255 mConfig = null; 256 networkId = WifiConfiguration.INVALID_NETWORK_ID; 257 } 258 getInfo()259 public WifiInfo getInfo() { 260 return mInfo; 261 } 262 getLevel()263 public int getLevel() { 264 if (mRssi == Integer.MAX_VALUE) { 265 return -1; 266 } 267 return WifiManager.calculateSignalLevel(mRssi, SIGNAL_LEVELS); 268 } 269 getRssi()270 public int getRssi() { 271 int rssi = Integer.MIN_VALUE; 272 for (ScanResult result : mScanResultCache.snapshot().values()) { 273 if (result.level > rssi) { 274 rssi = result.level; 275 } 276 } 277 278 return rssi; 279 } 280 getSeen()281 public long getSeen() { 282 long seen = 0; 283 for (ScanResult result : mScanResultCache.snapshot().values()) { 284 if (result.timestamp > seen) { 285 seen = result.timestamp; 286 } 287 } 288 289 return seen; 290 } 291 getNetworkInfo()292 public NetworkInfo getNetworkInfo() { 293 return mNetworkInfo; 294 } 295 getSecurity()296 public int getSecurity() { 297 return security; 298 } 299 getSecurityString(boolean concise)300 public String getSecurityString(boolean concise) { 301 Context context = mContext; 302 if (mConfig != null && mConfig.isPasspoint()) { 303 return concise ? context.getString(R.string.wifi_security_short_eap) : 304 context.getString(R.string.wifi_security_eap); 305 } 306 switch(security) { 307 case SECURITY_EAP: 308 return concise ? context.getString(R.string.wifi_security_short_eap) : 309 context.getString(R.string.wifi_security_eap); 310 case SECURITY_PSK: 311 switch (pskType) { 312 case PSK_WPA: 313 return concise ? context.getString(R.string.wifi_security_short_wpa) : 314 context.getString(R.string.wifi_security_wpa); 315 case PSK_WPA2: 316 return concise ? context.getString(R.string.wifi_security_short_wpa2) : 317 context.getString(R.string.wifi_security_wpa2); 318 case PSK_WPA_WPA2: 319 return concise ? context.getString(R.string.wifi_security_short_wpa_wpa2) : 320 context.getString(R.string.wifi_security_wpa_wpa2); 321 case PSK_UNKNOWN: 322 default: 323 return concise ? context.getString(R.string.wifi_security_short_psk_generic) 324 : context.getString(R.string.wifi_security_psk_generic); 325 } 326 case SECURITY_WEP: 327 return concise ? context.getString(R.string.wifi_security_short_wep) : 328 context.getString(R.string.wifi_security_wep); 329 case SECURITY_NONE: 330 default: 331 return concise ? "" : context.getString(R.string.wifi_security_none); 332 } 333 } 334 getSsidStr()335 public String getSsidStr() { 336 return ssid; 337 } 338 getBssid()339 public String getBssid() { 340 return bssid; 341 } 342 getSsid()343 public CharSequence getSsid() { 344 SpannableString str = new SpannableString(ssid); 345 str.setSpan(new TtsSpan.VerbatimBuilder(ssid).build(), 0, ssid.length(), 346 Spannable.SPAN_INCLUSIVE_INCLUSIVE); 347 return str; 348 } 349 getConfigName()350 public String getConfigName() { 351 if (mConfig != null && mConfig.isPasspoint()) { 352 return mConfig.providerFriendlyName; 353 } else { 354 return ssid; 355 } 356 } 357 getDetailedState()358 public DetailedState getDetailedState() { 359 return mNetworkInfo != null ? mNetworkInfo.getDetailedState() : null; 360 } 361 getSavedNetworkSummary()362 public String getSavedNetworkSummary() { 363 if (mConfig != null) { 364 PackageManager pm = mContext.getPackageManager(); 365 String systemName = pm.getNameForUid(android.os.Process.SYSTEM_UID); 366 int userId = UserHandle.getUserId(mConfig.creatorUid); 367 ApplicationInfo appInfo = null; 368 if (mConfig.creatorName != null && mConfig.creatorName.equals(systemName)) { 369 appInfo = mContext.getApplicationInfo(); 370 } else { 371 try { 372 IPackageManager ipm = AppGlobals.getPackageManager(); 373 appInfo = ipm.getApplicationInfo(mConfig.creatorName, 0 /* flags */, userId); 374 } catch (RemoteException rex) { 375 } 376 } 377 if (appInfo != null && 378 !appInfo.packageName.equals(mContext.getString(R.string.settings_package)) && 379 !appInfo.packageName.equals( 380 mContext.getString(R.string.certinstaller_package))) { 381 return mContext.getString(R.string.saved_network, appInfo.loadLabel(pm)); 382 } 383 } 384 return ""; 385 } 386 getSummary()387 public String getSummary() { 388 return getSettingsSummary(); 389 } 390 getSettingsSummary()391 public String getSettingsSummary() { 392 // Update to new summary 393 StringBuilder summary = new StringBuilder(); 394 395 if (isActive() && mConfig != null && mConfig.isPasspoint()) { 396 // This is the active connection on passpoint 397 summary.append(getSummary(mContext, getDetailedState(), 398 false, mConfig.providerFriendlyName)); 399 } else if (isActive()) { 400 // This is the active connection on non-passpoint network 401 summary.append(getSummary(mContext, getDetailedState(), 402 mInfo != null && mInfo.isEphemeral())); 403 } else if (mConfig != null && mConfig.isPasspoint()) { 404 String format = mContext.getString(R.string.available_via_passpoint); 405 summary.append(String.format(format, mConfig.providerFriendlyName)); 406 } else if (mConfig != null && mConfig.hasNoInternetAccess()) { 407 summary.append(mContext.getString(R.string.wifi_no_internet)); 408 } else if (mConfig != null && !mConfig.getNetworkSelectionStatus().isNetworkEnabled()) { 409 WifiConfiguration.NetworkSelectionStatus networkStatus = 410 mConfig.getNetworkSelectionStatus(); 411 switch (networkStatus.getNetworkSelectionDisableReason()) { 412 case WifiConfiguration.NetworkSelectionStatus.DISABLED_AUTHENTICATION_FAILURE: 413 summary.append(mContext.getString(R.string.wifi_disabled_password_failure)); 414 break; 415 case WifiConfiguration.NetworkSelectionStatus.DISABLED_DHCP_FAILURE: 416 case WifiConfiguration.NetworkSelectionStatus.DISABLED_DNS_FAILURE: 417 summary.append(mContext.getString(R.string.wifi_disabled_network_failure)); 418 break; 419 case WifiConfiguration.NetworkSelectionStatus.DISABLED_ASSOCIATION_REJECTION: 420 summary.append(mContext.getString(R.string.wifi_disabled_generic)); 421 break; 422 } 423 } else if (mRssi == Integer.MAX_VALUE) { // Wifi out of range 424 summary.append(mContext.getString(R.string.wifi_not_in_range)); 425 } else { // In range, not disabled. 426 if (mConfig != null) { // Is saved network 427 summary.append(mContext.getString(R.string.wifi_remembered)); 428 } 429 } 430 431 if (WifiTracker.sVerboseLogging > 0) { 432 // Add RSSI/band information for this config, what was seen up to 6 seconds ago 433 // verbose WiFi Logging is only turned on thru developers settings 434 if (mInfo != null && mNetworkInfo != null) { // This is the active connection 435 summary.append(" f=" + Integer.toString(mInfo.getFrequency())); 436 } 437 summary.append(" " + getVisibilityStatus()); 438 if (mConfig != null && !mConfig.getNetworkSelectionStatus().isNetworkEnabled()) { 439 summary.append(" (" + mConfig.getNetworkSelectionStatus().getNetworkStatusString()); 440 if (mConfig.getNetworkSelectionStatus().getDisableTime() > 0) { 441 long now = System.currentTimeMillis(); 442 long diff = (now - mConfig.getNetworkSelectionStatus().getDisableTime()) / 1000; 443 long sec = diff%60; //seconds 444 long min = (diff/60)%60; //minutes 445 long hour = (min/60)%60; //hours 446 summary.append(", "); 447 if (hour > 0) summary.append(Long.toString(hour) + "h "); 448 summary.append( Long.toString(min) + "m "); 449 summary.append( Long.toString(sec) + "s "); 450 } 451 summary.append(")"); 452 } 453 454 if (mConfig != null) { 455 WifiConfiguration.NetworkSelectionStatus networkStatus = 456 mConfig.getNetworkSelectionStatus(); 457 for (int index = WifiConfiguration.NetworkSelectionStatus.NETWORK_SELECTION_ENABLE; 458 index < WifiConfiguration.NetworkSelectionStatus 459 .NETWORK_SELECTION_DISABLED_MAX; index++) { 460 if (networkStatus.getDisableReasonCounter(index) != 0) { 461 summary.append(" " + WifiConfiguration.NetworkSelectionStatus 462 .getNetworkDisableReasonString(index) + "=" 463 + networkStatus.getDisableReasonCounter(index)); 464 } 465 } 466 } 467 } 468 return summary.toString(); 469 } 470 471 /** 472 * Returns the visibility status of the WifiConfiguration. 473 * 474 * @return autojoin debugging information 475 * TODO: use a string formatter 476 * ["rssi 5Ghz", "num results on 5GHz" / "rssi 5Ghz", "num results on 5GHz"] 477 * For instance [-40,5/-30,2] 478 */ getVisibilityStatus()479 private String getVisibilityStatus() { 480 StringBuilder visibility = new StringBuilder(); 481 StringBuilder scans24GHz = null; 482 StringBuilder scans5GHz = null; 483 String bssid = null; 484 485 long now = System.currentTimeMillis(); 486 487 if (mInfo != null) { 488 bssid = mInfo.getBSSID(); 489 if (bssid != null) { 490 visibility.append(" ").append(bssid); 491 } 492 visibility.append(" rssi=").append(mInfo.getRssi()); 493 visibility.append(" "); 494 visibility.append(" score=").append(mInfo.score); 495 visibility.append(String.format(" tx=%.1f,", mInfo.txSuccessRate)); 496 visibility.append(String.format("%.1f,", mInfo.txRetriesRate)); 497 visibility.append(String.format("%.1f ", mInfo.txBadRate)); 498 visibility.append(String.format("rx=%.1f", mInfo.rxSuccessRate)); 499 } 500 501 int rssi5 = WifiConfiguration.INVALID_RSSI; 502 int rssi24 = WifiConfiguration.INVALID_RSSI; 503 int num5 = 0; 504 int num24 = 0; 505 int numBlackListed = 0; 506 int n24 = 0; // Number scan results we included in the string 507 int n5 = 0; // Number scan results we included in the string 508 Map<String, ScanResult> list = mScanResultCache.snapshot(); 509 // TODO: sort list by RSSI or age 510 for (ScanResult result : list.values()) { 511 512 if (result.frequency >= LOWER_FREQ_5GHZ 513 && result.frequency <= HIGHER_FREQ_5GHZ) { 514 // Strictly speaking: [4915, 5825] 515 // number of known BSSID on 5GHz band 516 num5 = num5 + 1; 517 } else if (result.frequency >= LOWER_FREQ_24GHZ 518 && result.frequency <= HIGHER_FREQ_24GHZ) { 519 // Strictly speaking: [2412, 2482] 520 // number of known BSSID on 2.4Ghz band 521 num24 = num24 + 1; 522 } 523 524 525 if (result.frequency >= LOWER_FREQ_5GHZ 526 && result.frequency <= HIGHER_FREQ_5GHZ) { 527 if (result.level > rssi5) { 528 rssi5 = result.level; 529 } 530 if (n5 < 4) { 531 if (scans5GHz == null) scans5GHz = new StringBuilder(); 532 scans5GHz.append(" \n{").append(result.BSSID); 533 if (bssid != null && result.BSSID.equals(bssid)) scans5GHz.append("*"); 534 scans5GHz.append("=").append(result.frequency); 535 scans5GHz.append(",").append(result.level); 536 scans5GHz.append("}"); 537 n5++; 538 } 539 } else if (result.frequency >= LOWER_FREQ_24GHZ 540 && result.frequency <= HIGHER_FREQ_24GHZ) { 541 if (result.level > rssi24) { 542 rssi24 = result.level; 543 } 544 if (n24 < 4) { 545 if (scans24GHz == null) scans24GHz = new StringBuilder(); 546 scans24GHz.append(" \n{").append(result.BSSID); 547 if (bssid != null && result.BSSID.equals(bssid)) scans24GHz.append("*"); 548 scans24GHz.append("=").append(result.frequency); 549 scans24GHz.append(",").append(result.level); 550 scans24GHz.append("}"); 551 n24++; 552 } 553 } 554 } 555 visibility.append(" ["); 556 if (num24 > 0) { 557 visibility.append("(").append(num24).append(")"); 558 if (n24 <= 4) { 559 if (scans24GHz != null) { 560 visibility.append(scans24GHz.toString()); 561 } 562 } else { 563 visibility.append("max=").append(rssi24); 564 if (scans24GHz != null) { 565 visibility.append(",").append(scans24GHz.toString()); 566 } 567 } 568 } 569 visibility.append(";"); 570 if (num5 > 0) { 571 visibility.append("(").append(num5).append(")"); 572 if (n5 <= 4) { 573 if (scans5GHz != null) { 574 visibility.append(scans5GHz.toString()); 575 } 576 } else { 577 visibility.append("max=").append(rssi5); 578 if (scans5GHz != null) { 579 visibility.append(",").append(scans5GHz.toString()); 580 } 581 } 582 } 583 if (numBlackListed > 0) 584 visibility.append("!").append(numBlackListed); 585 visibility.append("]"); 586 587 return visibility.toString(); 588 } 589 590 /** 591 * Return whether this is the active connection. 592 * For ephemeral connections (networkId is invalid), this returns false if the network is 593 * disconnected. 594 */ isActive()595 public boolean isActive() { 596 return mNetworkInfo != null && 597 (networkId != WifiConfiguration.INVALID_NETWORK_ID || 598 mNetworkInfo.getState() != State.DISCONNECTED); 599 } 600 isConnectable()601 public boolean isConnectable() { 602 return getLevel() != -1 && getDetailedState() == null; 603 } 604 isEphemeral()605 public boolean isEphemeral() { 606 return mInfo != null && mInfo.isEphemeral() && 607 mNetworkInfo != null && mNetworkInfo.getState() != State.DISCONNECTED; 608 } 609 isPasspoint()610 public boolean isPasspoint() { 611 return mConfig != null && mConfig.isPasspoint(); 612 } 613 614 /** 615 * Return whether the given {@link WifiInfo} is for this access point. 616 * If the current AP does not have a network Id then the config is used to 617 * match based on SSID and security. 618 */ isInfoForThisAccessPoint(WifiConfiguration config, WifiInfo info)619 private boolean isInfoForThisAccessPoint(WifiConfiguration config, WifiInfo info) { 620 if (isPasspoint() == false && networkId != WifiConfiguration.INVALID_NETWORK_ID) { 621 return networkId == info.getNetworkId(); 622 } else if (config != null) { 623 return matches(config); 624 } 625 else { 626 // Might be an ephemeral connection with no WifiConfiguration. Try matching on SSID. 627 // (Note that we only do this if the WifiConfiguration explicitly equals INVALID). 628 // TODO: Handle hex string SSIDs. 629 return ssid.equals(removeDoubleQuotes(info.getSSID())); 630 } 631 } 632 isSaved()633 public boolean isSaved() { 634 return networkId != WifiConfiguration.INVALID_NETWORK_ID; 635 } 636 getTag()637 public Object getTag() { 638 return mTag; 639 } 640 setTag(Object tag)641 public void setTag(Object tag) { 642 mTag = tag; 643 } 644 645 /** 646 * Generate and save a default wifiConfiguration with common values. 647 * Can only be called for unsecured networks. 648 */ generateOpenNetworkConfig()649 public void generateOpenNetworkConfig() { 650 if (security != SECURITY_NONE) 651 throw new IllegalStateException(); 652 if (mConfig != null) 653 return; 654 mConfig = new WifiConfiguration(); 655 mConfig.SSID = AccessPoint.convertToQuotedString(ssid); 656 mConfig.allowedKeyManagement.set(KeyMgmt.NONE); 657 } 658 loadConfig(WifiConfiguration config)659 void loadConfig(WifiConfiguration config) { 660 if (config.isPasspoint()) 661 ssid = config.providerFriendlyName; 662 else 663 ssid = (config.SSID == null ? "" : removeDoubleQuotes(config.SSID)); 664 665 bssid = config.BSSID; 666 security = getSecurity(config); 667 networkId = config.networkId; 668 mConfig = config; 669 } 670 initWithScanResult(ScanResult result)671 private void initWithScanResult(ScanResult result) { 672 ssid = result.SSID; 673 bssid = result.BSSID; 674 security = getSecurity(result); 675 if (security == SECURITY_PSK) 676 pskType = getPskType(result); 677 mRssi = result.level; 678 mSeen = result.timestamp; 679 } 680 saveWifiState(Bundle savedState)681 public void saveWifiState(Bundle savedState) { 682 if (ssid != null) savedState.putString(KEY_SSID, getSsidStr()); 683 savedState.putInt(KEY_SECURITY, security); 684 savedState.putInt(KEY_PSKTYPE, pskType); 685 if (mConfig != null) savedState.putParcelable(KEY_CONFIG, mConfig); 686 savedState.putParcelable(KEY_WIFIINFO, mInfo); 687 savedState.putParcelableArrayList(KEY_SCANRESULTCACHE, 688 new ArrayList<ScanResult>(mScanResultCache.snapshot().values())); 689 if (mNetworkInfo != null) { 690 savedState.putParcelable(KEY_NETWORKINFO, mNetworkInfo); 691 } 692 } 693 setListener(AccessPointListener listener)694 public void setListener(AccessPointListener listener) { 695 mAccessPointListener = listener; 696 } 697 update(ScanResult result)698 boolean update(ScanResult result) { 699 if (matches(result)) { 700 /* Update the LRU timestamp, if BSSID exists */ 701 mScanResultCache.get(result.BSSID); 702 703 /* Add or update the scan result for the BSSID */ 704 mScanResultCache.put(result.BSSID, result); 705 706 int oldLevel = getLevel(); 707 int oldRssi = getRssi(); 708 mSeen = getSeen(); 709 mRssi = (getRssi() + oldRssi)/2; 710 int newLevel = getLevel(); 711 712 if (newLevel > 0 && newLevel != oldLevel && mAccessPointListener != null) { 713 mAccessPointListener.onLevelChanged(this); 714 } 715 // This flag only comes from scans, is not easily saved in config 716 if (security == SECURITY_PSK) { 717 pskType = getPskType(result); 718 } 719 720 if (mAccessPointListener != null) { 721 mAccessPointListener.onAccessPointChanged(this); 722 } 723 724 return true; 725 } 726 return false; 727 } 728 update(WifiConfiguration config, WifiInfo info, NetworkInfo networkInfo)729 boolean update(WifiConfiguration config, WifiInfo info, NetworkInfo networkInfo) { 730 boolean reorder = false; 731 if (info != null && isInfoForThisAccessPoint(config, info)) { 732 reorder = (mInfo == null); 733 mRssi = info.getRssi(); 734 mInfo = info; 735 mNetworkInfo = networkInfo; 736 if (mAccessPointListener != null) { 737 mAccessPointListener.onAccessPointChanged(this); 738 } 739 } else if (mInfo != null) { 740 reorder = true; 741 mInfo = null; 742 mNetworkInfo = null; 743 if (mAccessPointListener != null) { 744 mAccessPointListener.onAccessPointChanged(this); 745 } 746 } 747 return reorder; 748 } 749 update(WifiConfiguration config)750 void update(WifiConfiguration config) { 751 mConfig = config; 752 networkId = config.networkId; 753 if (mAccessPointListener != null) { 754 mAccessPointListener.onAccessPointChanged(this); 755 } 756 } 757 setRssi(int rssi)758 void setRssi(int rssi) { 759 mRssi = rssi; 760 } 761 getSummary(Context context, String ssid, DetailedState state, boolean isEphemeral, String passpointProvider)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 getSummary(Context context, DetailedState state, boolean isEphemeral)804 public static String getSummary(Context context, DetailedState state, boolean isEphemeral) { 805 return getSummary(context, null, state, isEphemeral, null); 806 } 807 getSummary(Context context, DetailedState state, boolean isEphemeral, String passpointProvider)808 public static String getSummary(Context context, DetailedState state, boolean isEphemeral, 809 String passpointProvider) { 810 return getSummary(context, null, state, isEphemeral, passpointProvider); 811 } 812 convertToQuotedString(String string)813 public static String convertToQuotedString(String string) { 814 return "\"" + string + "\""; 815 } 816 getPskType(ScanResult result)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 getSecurity(ScanResult result)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 getSecurity(WifiConfiguration config)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 securityToString(int security, int pskType)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 removeDoubleQuotes(String string)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 { onAccessPointChanged(AccessPoint accessPoint)885 void onAccessPointChanged(AccessPoint accessPoint); onLevelChanged(AccessPoint accessPoint)886 void onLevelChanged(AccessPoint accessPoint); 887 } 888 } 889