AccessPoint.java revision d52356aa5e82c7c5db61672bbe8d0f44861f3e59
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.NetworkInfo; 21import android.net.NetworkInfo.DetailedState; 22import android.net.NetworkInfo.State; 23import android.net.wifi.ScanResult; 24import android.net.wifi.WifiConfiguration; 25import android.net.wifi.WifiConfiguration.KeyMgmt; 26import android.net.wifi.WifiInfo; 27import android.net.wifi.WifiManager; 28import android.os.Bundle; 29import android.util.Log; 30import android.util.LruCache; 31 32import com.android.settingslib.R; 33 34import java.util.Map; 35 36 37public class AccessPoint implements Comparable<AccessPoint> { 38 static final String TAG = "SettingsLib.AccessPoint"; 39 40 /** 41 * Lower bound on the 2.4 GHz (802.11b/g/n) WLAN channels 42 */ 43 public static final int LOWER_FREQ_24GHZ = 2400; 44 45 /** 46 * Upper bound on the 2.4 GHz (802.11b/g/n) WLAN channels 47 */ 48 public static final int HIGHER_FREQ_24GHZ = 2500; 49 50 /** 51 * Lower bound on the 5.0 GHz (802.11a/h/j/n/ac) WLAN channels 52 */ 53 public static final int LOWER_FREQ_5GHZ = 4900; 54 55 /** 56 * Upper bound on the 5.0 GHz (802.11a/h/j/n/ac) WLAN channels 57 */ 58 public static final int HIGHER_FREQ_5GHZ = 5900; 59 60 61 /** 62 * Experimental: we should be able to show the user the list of BSSIDs and bands 63 * for that SSID. 64 * For now this data is used only with Verbose Logging so as to show the band and number 65 * of BSSIDs on which that network is seen. 66 */ 67 public LruCache<String, ScanResult> mScanResultCache; 68 private static final String KEY_NETWORKINFO = "key_networkinfo"; 69 private static final String KEY_WIFIINFO = "key_wifiinfo"; 70 private static final String KEY_SCANRESULT = "key_scanresult"; 71 private static final String KEY_CONFIG = "key_config"; 72 73 /** 74 * These values are matched in string arrays -- changes must be kept in sync 75 */ 76 public static final int SECURITY_NONE = 0; 77 public static final int SECURITY_WEP = 1; 78 public static final int SECURITY_PSK = 2; 79 public static final int SECURITY_EAP = 3; 80 81 private static final int PSK_UNKNOWN = 0; 82 private static final int PSK_WPA = 1; 83 private static final int PSK_WPA2 = 2; 84 private static final int PSK_WPA_WPA2 = 3; 85 86 private static final int VISIBILITY_OUTDATED_AGE_IN_MILLI = 20000; 87 private final Context mContext; 88 89 private String ssid; 90 private int security; 91 private int networkId = WifiConfiguration.INVALID_NETWORK_ID; 92 93 private int pskType = PSK_UNKNOWN; 94 95 private WifiConfiguration mConfig; 96 private ScanResult mScanResult; 97 98 private int mRssi = Integer.MAX_VALUE; 99 private long mSeen = 0; 100 101 private WifiInfo mInfo; 102 private NetworkInfo mNetworkInfo; 103 private AccessPointListener mAccessPointListener; 104 105 private Object mTag; 106 107 public AccessPoint(Context context, Bundle savedState) { 108 mContext = context; 109 mConfig = savedState.getParcelable(KEY_CONFIG); 110 if (mConfig != null) { 111 loadConfig(mConfig); 112 } 113 mScanResult = (ScanResult) savedState.getParcelable(KEY_SCANRESULT); 114 if (mScanResult != null) { 115 loadResult(mScanResult); 116 } 117 mInfo = (WifiInfo) savedState.getParcelable(KEY_WIFIINFO); 118 if (savedState.containsKey(KEY_NETWORKINFO)) { 119 mNetworkInfo = savedState.getParcelable(KEY_NETWORKINFO); 120 } 121 update(mInfo, mNetworkInfo); 122 } 123 124 AccessPoint(Context context, ScanResult result) { 125 mContext = context; 126 loadResult(result); 127 } 128 129 AccessPoint(Context context, WifiConfiguration config) { 130 mContext = context; 131 loadConfig(config); 132 } 133 134 @Override 135 public int compareTo(AccessPoint other) { 136 // Active one goes first. 137 if (isActive() && !other.isActive()) return -1; 138 if (!isActive() && other.isActive()) return 1; 139 140 // Reachable one goes before unreachable one. 141 if (mRssi != Integer.MAX_VALUE && other.mRssi == Integer.MAX_VALUE) return -1; 142 if (mRssi == Integer.MAX_VALUE && other.mRssi != Integer.MAX_VALUE) return 1; 143 144 // Configured one goes before unconfigured one. 145 if (networkId != WifiConfiguration.INVALID_NETWORK_ID 146 && other.networkId == WifiConfiguration.INVALID_NETWORK_ID) return -1; 147 if (networkId == WifiConfiguration.INVALID_NETWORK_ID 148 && other.networkId != WifiConfiguration.INVALID_NETWORK_ID) return 1; 149 150 // Sort by signal strength. 151 int difference = WifiManager.compareSignalLevel(other.mRssi, mRssi); 152 if (difference != 0) { 153 return difference; 154 } 155 // Sort by ssid. 156 return ssid.compareToIgnoreCase(other.ssid); 157 } 158 159 @Override 160 public boolean equals(Object other) { 161 if (!(other instanceof AccessPoint)) return false; 162 return (this.compareTo((AccessPoint) other) == 0); 163 } 164 165 @Override 166 public int hashCode() { 167 int result = 0; 168 if (mInfo != null) result += 13 * mInfo.hashCode(); 169 result += 19 * mRssi; 170 result += 23 * networkId; 171 result += 29 * ssid.hashCode(); 172 return result; 173 } 174 175 @Override 176 public String toString() { 177 StringBuilder builder = new StringBuilder().append("AccessPoint(") 178 .append(ssid); 179 if (isSaved()) { 180 builder.append(',').append("saved"); 181 } 182 if (isActive()) { 183 builder.append(',').append("active"); 184 } 185 if (isEphemeral()) { 186 builder.append(',').append("ephemeral"); 187 } 188 if (isConnectable()) { 189 builder.append(',').append("connectable"); 190 } 191 if (security != SECURITY_NONE) { 192 builder.append(',').append(securityToString(security, pskType)); 193 } 194 return builder.append(')').toString(); 195 } 196 197 public boolean matches(ScanResult result) { 198 return ssid.equals(result.SSID) && security == getSecurity(result); 199 } 200 201 public boolean matches(WifiConfiguration config) { 202 return ssid.equals(removeDoubleQuotes(config.SSID)) && security == getSecurity(config); 203 } 204 205 public WifiConfiguration getConfig() { 206 return mConfig; 207 } 208 209 public void clearConfig() { 210 mConfig = null; 211 networkId = WifiConfiguration.INVALID_NETWORK_ID; 212 } 213 214 public WifiInfo getInfo() { 215 return mInfo; 216 } 217 218 public int getLevel() { 219 if (mRssi == Integer.MAX_VALUE) { 220 return -1; 221 } 222 return WifiManager.calculateSignalLevel(mRssi, 4); 223 } 224 225 public NetworkInfo getNetworkInfo() { 226 return mNetworkInfo; 227 } 228 229 public int getSecurity() { 230 return security; 231 } 232 233 public String getSecurityString(boolean concise) { 234 Context context = mContext; 235 switch(security) { 236 case SECURITY_EAP: 237 return concise ? context.getString(R.string.wifi_security_short_eap) : 238 context.getString(R.string.wifi_security_eap); 239 case SECURITY_PSK: 240 switch (pskType) { 241 case PSK_WPA: 242 return concise ? context.getString(R.string.wifi_security_short_wpa) : 243 context.getString(R.string.wifi_security_wpa); 244 case PSK_WPA2: 245 return concise ? context.getString(R.string.wifi_security_short_wpa2) : 246 context.getString(R.string.wifi_security_wpa2); 247 case PSK_WPA_WPA2: 248 return concise ? context.getString(R.string.wifi_security_short_wpa_wpa2) : 249 context.getString(R.string.wifi_security_wpa_wpa2); 250 case PSK_UNKNOWN: 251 default: 252 return concise ? context.getString(R.string.wifi_security_short_psk_generic) 253 : context.getString(R.string.wifi_security_psk_generic); 254 } 255 case SECURITY_WEP: 256 return concise ? context.getString(R.string.wifi_security_short_wep) : 257 context.getString(R.string.wifi_security_wep); 258 case SECURITY_NONE: 259 default: 260 return concise ? "" : context.getString(R.string.wifi_security_none); 261 } 262 } 263 264 public String getSsid() { 265 return ssid; 266 } 267 268 public DetailedState getDetailedState() { 269 return mNetworkInfo != null ? mNetworkInfo.getDetailedState() : null; 270 } 271 272 public String getSummary() { 273 // Update to new summary 274 StringBuilder summary = new StringBuilder(); 275 276 if (isActive()) { // This is the active connection 277 summary.append(getSummary(mContext, getDetailedState(), 278 networkId == WifiConfiguration.INVALID_NETWORK_ID)); 279 } else if (mConfig != null 280 && mConfig.hasNoInternetAccess()) { 281 summary.append(mContext.getString(R.string.wifi_no_internet)); 282 } else if (mConfig != null && ((mConfig.status == WifiConfiguration.Status.DISABLED && 283 mConfig.disableReason != WifiConfiguration.DISABLED_UNKNOWN_REASON) 284 || mConfig.autoJoinStatus 285 >= WifiConfiguration.AUTO_JOIN_DISABLED_ON_AUTH_FAILURE)) { 286 if (mConfig.autoJoinStatus 287 >= WifiConfiguration.AUTO_JOIN_DISABLED_ON_AUTH_FAILURE) { 288 if (mConfig.disableReason == WifiConfiguration.DISABLED_DHCP_FAILURE) { 289 summary.append(mContext.getString(R.string.wifi_disabled_network_failure)); 290 } else if (mConfig.disableReason == WifiConfiguration.DISABLED_AUTH_FAILURE) { 291 summary.append(mContext.getString(R.string.wifi_disabled_password_failure)); 292 } else { 293 summary.append(mContext.getString(R.string.wifi_disabled_wifi_failure)); 294 } 295 } else { 296 switch (mConfig.disableReason) { 297 case WifiConfiguration.DISABLED_AUTH_FAILURE: 298 summary.append(mContext.getString(R.string.wifi_disabled_password_failure)); 299 break; 300 case WifiConfiguration.DISABLED_DHCP_FAILURE: 301 case WifiConfiguration.DISABLED_DNS_FAILURE: 302 summary.append(mContext.getString(R.string.wifi_disabled_network_failure)); 303 break; 304 case WifiConfiguration.DISABLED_UNKNOWN_REASON: 305 case WifiConfiguration.DISABLED_ASSOCIATION_REJECT: 306 summary.append(mContext.getString(R.string.wifi_disabled_generic)); 307 break; 308 } 309 } 310 } else if (mRssi == Integer.MAX_VALUE) { // Wifi out of range 311 summary.append(mContext.getString(R.string.wifi_not_in_range)); 312 } else { // In range, not disabled. 313 if (mConfig != null) { // Is saved network 314 summary.append(mContext.getString(R.string.wifi_remembered)); 315 } 316 } 317 318 if (WifiTracker.sVerboseLogging > 0) { 319 // Add RSSI/band information for this config, what was seen up to 6 seconds ago 320 // verbose WiFi Logging is only turned on thru developers settings 321 if (mInfo != null && mNetworkInfo != null) { // This is the active connection 322 summary.append(" f=" + Integer.toString(mInfo.getFrequency())); 323 } 324 summary.append(" " + getVisibilityStatus()); 325 if (mConfig != null && mConfig.autoJoinStatus > 0) { 326 summary.append(" (" + mConfig.autoJoinStatus); 327 if (mConfig.blackListTimestamp > 0) { 328 long now = System.currentTimeMillis(); 329 long diff = (now - mConfig.blackListTimestamp)/1000; 330 long sec = diff%60; //seconds 331 long min = (diff/60)%60; //minutes 332 long hour = (min/60)%60; //hours 333 summary.append(", "); 334 if (hour > 0) summary.append(Long.toString(hour) + "h "); 335 summary.append( Long.toString(min) + "m "); 336 summary.append( Long.toString(sec) + "s "); 337 } 338 summary.append(")"); 339 } 340 if (mConfig != null && mConfig.numIpConfigFailures > 0) { 341 summary.append(" ipf=").append(mConfig.numIpConfigFailures); 342 } 343 if (mConfig != null && mConfig.numConnectionFailures > 0) { 344 summary.append(" cf=").append(mConfig.numConnectionFailures); 345 } 346 if (mConfig != null && mConfig.numAuthFailures > 0) { 347 summary.append(" authf=").append(mConfig.numAuthFailures); 348 } 349 if (mConfig != null && mConfig.numNoInternetAccessReports > 0) { 350 summary.append(" noInt=").append(mConfig.numNoInternetAccessReports); 351 } 352 } 353 return summary.toString(); 354 } 355 356 /** 357 * Returns the visibility status of the WifiConfiguration. 358 * 359 * @return autojoin debugging information 360 * TODO: use a string formatter 361 * ["rssi 5Ghz", "num results on 5GHz" / "rssi 5Ghz", "num results on 5GHz"] 362 * For instance [-40,5/-30,2] 363 */ 364 private String getVisibilityStatus() { 365 StringBuilder visibility = new StringBuilder(); 366 StringBuilder scans24GHz = null; 367 StringBuilder scans5GHz = null; 368 String bssid = null; 369 370 long now = System.currentTimeMillis(); 371 372 if (mInfo != null) { 373 bssid = mInfo.getBSSID(); 374 if (bssid != null) { 375 visibility.append(" ").append(bssid); 376 } 377 visibility.append(" rssi=").append(mInfo.getRssi()); 378 visibility.append(" "); 379 visibility.append(" score=").append(mInfo.score); 380 visibility.append(String.format(" tx=%.1f,", mInfo.txSuccessRate)); 381 visibility.append(String.format("%.1f,", mInfo.txRetriesRate)); 382 visibility.append(String.format("%.1f ", mInfo.txBadRate)); 383 visibility.append(String.format("rx=%.1f", mInfo.rxSuccessRate)); 384 } 385 386 if (mScanResultCache != null) { 387 int rssi5 = WifiConfiguration.INVALID_RSSI; 388 int rssi24 = WifiConfiguration.INVALID_RSSI; 389 int num5 = 0; 390 int num24 = 0; 391 int numBlackListed = 0; 392 int n24 = 0; // Number scan results we included in the string 393 int n5 = 0; // Number scan results we included in the string 394 Map<String, ScanResult> list = mScanResultCache.snapshot(); 395 // TODO: sort list by RSSI or age 396 for (ScanResult result : list.values()) { 397 if (result.seen == 0) 398 continue; 399 400 if (result.autoJoinStatus != ScanResult.ENABLED) numBlackListed++; 401 402 if (result.frequency >= LOWER_FREQ_5GHZ 403 && result.frequency <= HIGHER_FREQ_5GHZ) { 404 // Strictly speaking: [4915, 5825] 405 // number of known BSSID on 5GHz band 406 num5 = num5 + 1; 407 } else if (result.frequency >= LOWER_FREQ_24GHZ 408 && result.frequency <= HIGHER_FREQ_24GHZ) { 409 // Strictly speaking: [2412, 2482] 410 // number of known BSSID on 2.4Ghz band 411 num24 = num24 + 1; 412 } 413 414 // Ignore results seen, older than 20 seconds 415 if (now - result.seen > VISIBILITY_OUTDATED_AGE_IN_MILLI) continue; 416 417 if (result.frequency >= LOWER_FREQ_5GHZ 418 && result.frequency <= HIGHER_FREQ_5GHZ) { 419 if (result.level > rssi5) { 420 rssi5 = result.level; 421 } 422 if (n5 < 4) { 423 if (scans5GHz == null) scans5GHz = new StringBuilder(); 424 scans5GHz.append(" \n{").append(result.BSSID); 425 if (bssid != null && result.BSSID.equals(bssid)) scans5GHz.append("*"); 426 scans5GHz.append("=").append(result.frequency); 427 scans5GHz.append(",").append(result.level); 428 if (result.autoJoinStatus != 0) { 429 scans5GHz.append(",st=").append(result.autoJoinStatus); 430 } 431 if (result.numIpConfigFailures != 0) { 432 scans5GHz.append(",ipf=").append(result.numIpConfigFailures); 433 } 434 scans5GHz.append("}"); 435 n5++; 436 } 437 } else if (result.frequency >= LOWER_FREQ_24GHZ 438 && result.frequency <= HIGHER_FREQ_24GHZ) { 439 if (result.level > rssi24) { 440 rssi24 = result.level; 441 } 442 if (n24 < 4) { 443 if (scans24GHz == null) scans24GHz = new StringBuilder(); 444 scans24GHz.append(" \n{").append(result.BSSID); 445 if (bssid != null && result.BSSID.equals(bssid)) scans24GHz.append("*"); 446 scans24GHz.append("=").append(result.frequency); 447 scans24GHz.append(",").append(result.level); 448 if (result.autoJoinStatus != 0) { 449 scans24GHz.append(",st=").append(result.autoJoinStatus); 450 } 451 if (result.numIpConfigFailures != 0) { 452 scans24GHz.append(",ipf=").append(result.numIpConfigFailures); 453 } 454 scans24GHz.append("}"); 455 n24++; 456 } 457 } 458 } 459 visibility.append(" ["); 460 if (num24 > 0) { 461 visibility.append("(").append(num24).append(")"); 462 if (n24 <= 4) { 463 if (scans24GHz != null) { 464 visibility.append(scans24GHz.toString()); 465 } 466 } else { 467 visibility.append("max=").append(rssi24); 468 if (scans24GHz != null) { 469 visibility.append(",").append(scans24GHz.toString()); 470 } 471 } 472 } 473 visibility.append(";"); 474 if (num5 > 0) { 475 visibility.append("(").append(num5).append(")"); 476 if (n5 <= 4) { 477 if (scans5GHz != null) { 478 visibility.append(scans5GHz.toString()); 479 } 480 } else { 481 visibility.append("max=").append(rssi5); 482 if (scans5GHz != null) { 483 visibility.append(",").append(scans5GHz.toString()); 484 } 485 } 486 } 487 if (numBlackListed > 0) 488 visibility.append("!").append(numBlackListed); 489 visibility.append("]"); 490 } else { 491 if (mRssi != Integer.MAX_VALUE) { 492 visibility.append(" rssi="); 493 visibility.append(mRssi); 494 if (mScanResult != null) { 495 visibility.append(", f="); 496 visibility.append(mScanResult.frequency); 497 } 498 } 499 } 500 501 return visibility.toString(); 502 } 503 504 /** 505 * Return whether this is the active connection. 506 * For ephemeral connections (networkId is invalid), this returns false if the network is 507 * disconnected. 508 */ 509 public boolean isActive() { 510 return mNetworkInfo != null && 511 (networkId != WifiConfiguration.INVALID_NETWORK_ID || 512 mNetworkInfo.getState() != State.DISCONNECTED); 513 } 514 515 public boolean isConnectable() { 516 return getLevel() != -1 && getDetailedState() == null; 517 } 518 519 public boolean isEphemeral() { 520 return !isSaved() && mNetworkInfo != null && mNetworkInfo.getState() != State.DISCONNECTED; 521 } 522 523 /** Return whether the given {@link WifiInfo} is for this access point. */ 524 private boolean isInfoForThisAccessPoint(WifiInfo info) { 525 if (networkId != WifiConfiguration.INVALID_NETWORK_ID) { 526 return networkId == info.getNetworkId(); 527 } else { 528 // Might be an ephemeral connection with no WifiConfiguration. Try matching on SSID. 529 // (Note that we only do this if the WifiConfiguration explicitly equals INVALID). 530 // TODO: Handle hex string SSIDs. 531 return ssid.equals(removeDoubleQuotes(info.getSSID())); 532 } 533 } 534 535 public boolean isSaved() { 536 return networkId != WifiConfiguration.INVALID_NETWORK_ID; 537 } 538 539 public Object getTag() { 540 return mTag; 541 } 542 543 public void setTag(Object tag) { 544 mTag = tag; 545 } 546 547 /** 548 * Generate and save a default wifiConfiguration with common values. 549 * Can only be called for unsecured networks. 550 */ 551 public void generateOpenNetworkConfig() { 552 if (security != SECURITY_NONE) 553 throw new IllegalStateException(); 554 if (mConfig != null) 555 return; 556 mConfig = new WifiConfiguration(); 557 mConfig.SSID = AccessPoint.convertToQuotedString(ssid); 558 mConfig.allowedKeyManagement.set(KeyMgmt.NONE); 559 } 560 561 void loadConfig(WifiConfiguration config) { 562 ssid = (config.SSID == null ? "" : removeDoubleQuotes(config.SSID)); 563 security = getSecurity(config); 564 networkId = config.networkId; 565 mConfig = config; 566 } 567 568 private void loadResult(ScanResult result) { 569 ssid = result.SSID; 570 security = getSecurity(result); 571 if (security == SECURITY_PSK) 572 pskType = getPskType(result); 573 mRssi = result.level; 574 mScanResult = result; 575 if (result.seen > mSeen) { 576 mSeen = result.seen; 577 } 578 } 579 580 public void saveWifiState(Bundle savedState) { 581 savedState.putParcelable(KEY_CONFIG, mConfig); 582 savedState.putParcelable(KEY_SCANRESULT, mScanResult); 583 savedState.putParcelable(KEY_WIFIINFO, mInfo); 584 if (mNetworkInfo != null) { 585 savedState.putParcelable(KEY_NETWORKINFO, mNetworkInfo); 586 } 587 } 588 589 public void setListener(AccessPointListener listener) { 590 mAccessPointListener = listener; 591 } 592 593 boolean update(ScanResult result) { 594 if (result.seen > mSeen) { 595 mSeen = result.seen; 596 } 597 if (WifiTracker.sVerboseLogging > 0) { 598 if (mScanResultCache == null) { 599 mScanResultCache = new LruCache<String, ScanResult>(32); 600 } 601 mScanResultCache.put(result.BSSID, result); 602 } 603 604 if (ssid.equals(result.SSID) && security == getSecurity(result)) { 605 if (WifiManager.compareSignalLevel(result.level, mRssi) > 0) { 606 int oldLevel = getLevel(); 607 mRssi = result.level; 608 if (getLevel() != oldLevel && mAccessPointListener != null) { 609 mAccessPointListener.onLevelChanged(this); 610 } 611 } 612 // This flag only comes from scans, is not easily saved in config 613 if (security == SECURITY_PSK) { 614 pskType = getPskType(result); 615 } 616 mScanResult = result; 617 if (mAccessPointListener != null) { 618 mAccessPointListener.onAccessPointChanged(this); 619 } 620 return true; 621 } 622 return false; 623 } 624 625 boolean update(WifiInfo info, NetworkInfo networkInfo) { 626 boolean reorder = false; 627 if (info != null && isInfoForThisAccessPoint(info)) { 628 reorder = (mInfo == null); 629 mRssi = info.getRssi(); 630 mInfo = info; 631 mNetworkInfo = networkInfo; 632 if (mAccessPointListener != null) { 633 mAccessPointListener.onAccessPointChanged(this); 634 } 635 } else if (mInfo != null) { 636 reorder = true; 637 mInfo = null; 638 mNetworkInfo = null; 639 if (mAccessPointListener != null) { 640 mAccessPointListener.onAccessPointChanged(this); 641 } 642 } 643 return reorder; 644 } 645 646 public static String getSummary(Context context, String ssid, DetailedState state, 647 boolean isEphemeral) { 648 if (state == DetailedState.CONNECTED && isEphemeral && ssid == null) { 649 // Special case for connected + ephemeral networks. 650 return context.getString(R.string.connected_via_wfa); 651 } 652 653 String[] formats = context.getResources().getStringArray((ssid == null) 654 ? R.array.wifi_status : R.array.wifi_status_with_ssid); 655 int index = state.ordinal(); 656 657 if (index >= formats.length || formats[index].length() == 0) { 658 return null; 659 } 660 return String.format(formats[index], ssid); 661 } 662 663 public static String getSummary(Context context, DetailedState state, boolean isEphemeral) { 664 return getSummary(context, null, state, isEphemeral); 665 } 666 667 public static String convertToQuotedString(String string) { 668 return "\"" + string + "\""; 669 } 670 671 private static int getPskType(ScanResult result) { 672 boolean wpa = result.capabilities.contains("WPA-PSK"); 673 boolean wpa2 = result.capabilities.contains("WPA2-PSK"); 674 if (wpa2 && wpa) { 675 return PSK_WPA_WPA2; 676 } else if (wpa2) { 677 return PSK_WPA2; 678 } else if (wpa) { 679 return PSK_WPA; 680 } else { 681 Log.w(TAG, "Received abnormal flag string: " + result.capabilities); 682 return PSK_UNKNOWN; 683 } 684 } 685 686 private static int getSecurity(ScanResult result) { 687 if (result.capabilities.contains("WEP")) { 688 return SECURITY_WEP; 689 } else if (result.capabilities.contains("PSK")) { 690 return SECURITY_PSK; 691 } else if (result.capabilities.contains("EAP")) { 692 return SECURITY_EAP; 693 } 694 return SECURITY_NONE; 695 } 696 697 static int getSecurity(WifiConfiguration config) { 698 if (config.allowedKeyManagement.get(KeyMgmt.WPA_PSK)) { 699 return SECURITY_PSK; 700 } 701 if (config.allowedKeyManagement.get(KeyMgmt.WPA_EAP) || 702 config.allowedKeyManagement.get(KeyMgmt.IEEE8021X)) { 703 return SECURITY_EAP; 704 } 705 return (config.wepKeys[0] != null) ? SECURITY_WEP : SECURITY_NONE; 706 } 707 708 public static String securityToString(int security, int pskType) { 709 if (security == SECURITY_WEP) { 710 return "WEP"; 711 } else if (security == SECURITY_PSK) { 712 if (pskType == PSK_WPA) { 713 return "WPA"; 714 } else if (pskType == PSK_WPA2) { 715 return "WPA2"; 716 } else if (pskType == PSK_WPA_WPA2) { 717 return "WPA_WPA2"; 718 } 719 return "PSK"; 720 } else if (security == SECURITY_EAP) { 721 return "EAP"; 722 } 723 return "NONE"; 724 } 725 726 static String removeDoubleQuotes(String string) { 727 int length = string.length(); 728 if ((length > 1) && (string.charAt(0) == '"') 729 && (string.charAt(length - 1) == '"')) { 730 return string.substring(1, length - 1); 731 } 732 return string; 733 } 734 735 public interface AccessPointListener { 736 void onAccessPointChanged(AccessPoint accessPoint); 737 void onLevelChanged(AccessPoint accessPoint); 738 } 739} 740