WifiNative.java revision ae84f13d7b7f34ddbf5ac380d98e8d19b3541f6c
1/* 2 * Copyright (C) 2008 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.server.wifi; 18 19import android.net.wifi.BatchedScanSettings; 20import android.net.wifi.ScanResult; 21import android.net.wifi.WifiLinkLayerStats; 22import android.net.wifi.WifiScanner; 23import android.net.wifi.WpsInfo; 24import android.net.wifi.p2p.WifiP2pConfig; 25import android.net.wifi.p2p.WifiP2pGroup; 26import android.os.SystemClock; 27import android.text.TextUtils; 28import android.net.wifi.p2p.nsd.WifiP2pServiceInfo; 29import android.util.LocalLog; 30import android.util.Log; 31 32import java.util.ArrayList; 33import java.util.List; 34import java.util.Locale; 35 36/** 37 * Native calls for bring up/shut down of the supplicant daemon and for 38 * sending requests to the supplicant daemon 39 * 40 * waitForEvent() is called on the monitor thread for events. All other methods 41 * must be serialized from the framework. 42 * 43 * {@hide} 44 */ 45public class WifiNative { 46 47 private static boolean DBG = false; 48 private final String mTAG; 49 private static final int DEFAULT_GROUP_OWNER_INTENT = 6; 50 51 static final int BLUETOOTH_COEXISTENCE_MODE_ENABLED = 0; 52 static final int BLUETOOTH_COEXISTENCE_MODE_DISABLED = 1; 53 static final int BLUETOOTH_COEXISTENCE_MODE_SENSE = 2; 54 55 static final int SCAN_WITHOUT_CONNECTION_SETUP = 1; 56 static final int SCAN_WITH_CONNECTION_SETUP = 2; 57 58 // Hold this lock before calling supplicant - it is required to 59 // mutually exclude access from Wifi and P2p state machines 60 static final Object mLock = new Object(); 61 62 public final String mInterfaceName; 63 public final String mInterfacePrefix; 64 65 private boolean mSuspendOptEnabled = false; 66 67 /* Register native functions */ 68 69 static { 70 /* Native functions are defined in libwifi-service.so */ 71 System.loadLibrary("wifi-service"); 72 registerNatives(); 73 } 74 75 private static native int registerNatives(); 76 77 public native static boolean loadDriver(); 78 79 public native static boolean isDriverLoaded(); 80 81 public native static boolean unloadDriver(); 82 83 public native static boolean startSupplicant(boolean p2pSupported); 84 85 /* Sends a kill signal to supplicant. To be used when we have lost connection 86 or when the supplicant is hung */ 87 public native static boolean killSupplicant(boolean p2pSupported); 88 89 private native boolean connectToSupplicantNative(); 90 91 private native void closeSupplicantConnectionNative(); 92 93 /** 94 * Wait for the supplicant to send an event, returning the event string. 95 * @return the event string sent by the supplicant. 96 */ 97 private native String waitForEventNative(); 98 99 private native boolean doBooleanCommandNative(String command); 100 101 private native int doIntCommandNative(String command); 102 103 private native String doStringCommandNative(String command); 104 105 public WifiNative(String interfaceName) { 106 mInterfaceName = interfaceName; 107 mTAG = "WifiNative-" + interfaceName; 108 if (!interfaceName.equals("p2p0")) { 109 mInterfacePrefix = "IFNAME=" + interfaceName + " "; 110 } else { 111 // commands for p2p0 interface don't need prefix 112 mInterfacePrefix = ""; 113 } 114 } 115 116 void enableVerboseLogging(int verbose) { 117 if (verbose > 0) { 118 DBG = true; 119 } else { 120 DBG = false; 121 } 122 } 123 124 private static final LocalLog mLocalLog = new LocalLog(1024); 125 126 // hold mLock before accessing mCmdIdLock 127 private static int sCmdId; 128 129 public LocalLog getLocalLog() { 130 return mLocalLog; 131 } 132 133 private static int getNewCmdIdLocked() { 134 return sCmdId++; 135 } 136 137 private void localLog(String s) { 138 if (mLocalLog != null) 139 mLocalLog.log(mInterfaceName + ": " + s); 140 } 141 142 public boolean connectToSupplicant() { 143 // No synchronization necessary .. it is implemented in WifiMonitor 144 localLog(mInterfacePrefix + "connectToSupplicant"); 145 return connectToSupplicantNative(); 146 } 147 148 public void closeSupplicantConnection() { 149 localLog(mInterfacePrefix + "closeSupplicantConnection"); 150 closeSupplicantConnectionNative(); 151 } 152 153 public String waitForEvent() { 154 // No synchronization necessary .. it is implemented in WifiMonitor 155 return waitForEventNative(); 156 } 157 158 private boolean doBooleanCommand(String command) { 159 if (DBG) Log.d(mTAG, "doBoolean: " + command); 160 synchronized (mLock) { 161 int cmdId = getNewCmdIdLocked(); 162 localLog(cmdId + "->" + mInterfacePrefix + command); 163 boolean result = doBooleanCommandNative(mInterfacePrefix + command); 164 localLog(cmdId + "<-" + result); 165 if (DBG) Log.d(mTAG, command + ": returned " + result); 166 return result; 167 } 168 } 169 170 private int doIntCommand(String command) { 171 if (DBG) Log.d(mTAG, "doInt: " + command); 172 synchronized (mLock) { 173 int cmdId = getNewCmdIdLocked(); 174 localLog(cmdId + "->" + mInterfacePrefix + command); 175 int result = doIntCommandNative(mInterfacePrefix + command); 176 localLog(cmdId + "<-" + result); 177 if (DBG) Log.d(mTAG, " returned " + result); 178 return result; 179 } 180 } 181 182 private String doStringCommand(String command) { 183 if (DBG) { 184 //GET_NETWORK commands flood the logs 185 if (!command.startsWith("GET_NETWORK")) { 186 Log.d(mTAG, "doString: [" + command + "]"); 187 } 188 } 189 synchronized (mLock) { 190 int cmdId = getNewCmdIdLocked(); 191 localLog(cmdId + "->" + mInterfacePrefix + command); 192 String result = doStringCommandNative(mInterfacePrefix + command); 193 localLog(cmdId + "<-" + result); 194 if (DBG) Log.d(mTAG, " returned " + result); 195 return result; 196 } 197 } 198 199 private String doStringCommandWithoutLogging(String command) { 200 if (DBG) { 201 //GET_NETWORK commands flood the logs 202 if (!command.startsWith("GET_NETWORK")) { 203 Log.d(mTAG, "doString: [" + command + "]"); 204 } 205 } synchronized (mLock) { 206 return doStringCommandNative(mInterfacePrefix + command); 207 } 208 } 209 210 public boolean ping() { 211 String pong = doStringCommand("PING"); 212 return (pong != null && pong.equals("PONG")); 213 } 214 215 public String getFreqCapability() { 216 return doStringCommand("GET_CAPABILITY freq"); 217 } 218 219 public boolean scan(int type, String freqList) { 220 if (type == SCAN_WITHOUT_CONNECTION_SETUP) { 221 if (freqList == null) return doBooleanCommand("SCAN TYPE=ONLY"); 222 else return doBooleanCommand("SCAN TYPE=ONLY freq=" + freqList); 223 } else if (type == SCAN_WITH_CONNECTION_SETUP) { 224 if (freqList == null) return doBooleanCommand("SCAN"); 225 else return doBooleanCommand("SCAN freq=" + freqList); 226 } else { 227 throw new IllegalArgumentException("Invalid scan type"); 228 } 229 } 230 231 /* Does a graceful shutdown of supplicant. Is a common stop function for both p2p and sta. 232 * 233 * Note that underneath we use a harsh-sounding "terminate" supplicant command 234 * for a graceful stop and a mild-sounding "stop" interface 235 * to kill the process 236 */ 237 public boolean stopSupplicant() { 238 return doBooleanCommand("TERMINATE"); 239 } 240 241 public String listNetworks() { 242 return doStringCommand("LIST_NETWORKS"); 243 } 244 245 public int addNetwork() { 246 return doIntCommand("ADD_NETWORK"); 247 } 248 249 public boolean setNetworkVariable(int netId, String name, String value) { 250 if (TextUtils.isEmpty(name) || TextUtils.isEmpty(value)) return false; 251 return doBooleanCommand("SET_NETWORK " + netId + " " + name + " " + value); 252 } 253 254 public String getNetworkVariable(int netId, String name) { 255 if (TextUtils.isEmpty(name)) return null; 256 257 // GET_NETWORK will likely flood the logs ... 258 return doStringCommandWithoutLogging("GET_NETWORK " + netId + " " + name); 259 } 260 261 public boolean removeNetwork(int netId) { 262 return doBooleanCommand("REMOVE_NETWORK " + netId); 263 } 264 265 266 private void logDbg(String debug) { 267 long now = SystemClock.elapsedRealtimeNanos(); 268 String ts = String.format("[%,d us] ", now/1000); 269 Log.e("WifiNative: ", ts+debug+ " stack:" 270 + Thread.currentThread().getStackTrace()[2].getMethodName() +" - " 271 + Thread.currentThread().getStackTrace()[3].getMethodName() +" - " 272 + Thread.currentThread().getStackTrace()[4].getMethodName() +" - " 273 + Thread.currentThread().getStackTrace()[5].getMethodName()+" - " 274 + Thread.currentThread().getStackTrace()[6].getMethodName()); 275 276 } 277 public boolean enableNetwork(int netId, boolean disableOthers) { 278 if (DBG) logDbg("enableNetwork nid=" + Integer.toString(netId) 279 + " disableOthers=" + disableOthers); 280 if (disableOthers) { 281 return doBooleanCommand("SELECT_NETWORK " + netId); 282 } else { 283 return doBooleanCommand("ENABLE_NETWORK " + netId); 284 } 285 } 286 287 public boolean disableNetwork(int netId) { 288 if (DBG) logDbg("disableNetwork nid=" + Integer.toString(netId)); 289 return doBooleanCommand("DISABLE_NETWORK " + netId); 290 } 291 292 public boolean reconnect() { 293 if (DBG) logDbg("RECONNECT "); 294 return doBooleanCommand("RECONNECT"); 295 } 296 297 public boolean reassociate() { 298 if (DBG) logDbg("REASSOCIATE "); 299 return doBooleanCommand("REASSOCIATE"); 300 } 301 302 public boolean disconnect() { 303 if (DBG) logDbg("DISCONNECT "); 304 return doBooleanCommand("DISCONNECT"); 305 } 306 307 public String status() { 308 return doStringCommand("STATUS"); 309 } 310 311 public String getMacAddress() { 312 //Macaddr = XX.XX.XX.XX.XX.XX 313 String ret = doStringCommand("DRIVER MACADDR"); 314 if (!TextUtils.isEmpty(ret)) { 315 String[] tokens = ret.split(" = "); 316 if (tokens.length == 2) return tokens[1]; 317 } 318 return null; 319 } 320 321 /** 322 * Format of results: 323 * ================= 324 * id=1 325 * bssid=68:7f:74:d7:1b:6e 326 * freq=2412 327 * level=-43 328 * tsf=1344621975160944 329 * age=2623 330 * flags=[WPA2-PSK-CCMP][WPS][ESS] 331 * ssid=zubyb 332 * ==== 333 * 334 * RANGE=ALL gets all scan results 335 * RANGE=ID- gets results from ID 336 * MASK=<N> see wpa_supplicant/src/common/wpa_ctrl.h for details 337 */ 338 public String scanResults(int sid) { 339 return doStringCommandWithoutLogging("BSS RANGE=" + sid + "- MASK=0x21987"); 340 } 341 342 /** 343 * Format of result: 344 * id=1016 345 * bssid=00:03:7f:40:84:10 346 * freq=2462 347 * beacon_int=200 348 * capabilities=0x0431 349 * qual=0 350 * noise=0 351 * level=-46 352 * tsf=0000002669008476 353 * age=5 354 * ie=00105143412d485332302d52322d54455354010882848b960c12182403010b0706555... 355 * flags=[WPA2-EAP-CCMP][ESS][P2P][HS20] 356 * ssid=QCA-HS20-R2-TEST 357 * p2p_device_name= 358 * p2p_config_methods=0x0 359 * anqp_venue_name=02083d656e6757692d466920416c6c69616e63650a3239383920436f... 360 * anqp_network_auth_type=010000 361 * anqp_roaming_consortium=03506f9a05001bc504bd 362 * anqp_ip_addr_type_availability=0c 363 * anqp_nai_realm=0200300000246d61696c2e6578616d706c652e636f6d3b636973636f2... 364 * anqp_3gpp=000600040132f465 365 * anqp_domain_name=0b65786d61706c652e636f6d 366 * hs20_operator_friendly_name=11656e6757692d466920416c6c69616e63650e636869... 367 * hs20_wan_metrics=01c40900008001000000000a00 368 * hs20_connection_capability=0100000006140001061600000650000106bb010106bb0... 369 * hs20_osu_providers_list=0b5143412d4f53552d425353010901310015656e6757692d... 370 */ 371 public String scanResult(String bssid) { 372 return doStringCommand("BSS " + bssid); 373 } 374 375 /** 376 * Format of command 377 * DRIVER WLS_BATCHING SET SCANFREQ=x MSCAN=r BESTN=y CHANNEL=<z, w, t> RTT=s 378 * where x is an ascii representation of an integer number of seconds between scans 379 * r is an ascii representation of an integer number of scans per batch 380 * y is an ascii representation of an integer number of the max AP to remember per scan 381 * z, w, t represent a 1..n size list of channel numbers and/or 'A', 'B' values 382 * indicating entire ranges of channels 383 * s is an ascii representation of an integer number of highest-strength AP 384 * for which we'd like approximate distance reported 385 * 386 * The return value is an ascii integer representing a guess of the number of scans 387 * the firmware can remember before it runs out of buffer space or -1 on error 388 */ 389 public String setBatchedScanSettings(BatchedScanSettings settings) { 390 if (settings == null) { 391 return doStringCommand("DRIVER WLS_BATCHING STOP"); 392 } 393 String cmd = "DRIVER WLS_BATCHING SET SCANFREQ=" + settings.scanIntervalSec; 394 cmd += " MSCAN=" + settings.maxScansPerBatch; 395 if (settings.maxApPerScan != BatchedScanSettings.UNSPECIFIED) { 396 cmd += " BESTN=" + settings.maxApPerScan; 397 } 398 if (settings.channelSet != null && !settings.channelSet.isEmpty()) { 399 cmd += " CHANNEL=<"; 400 int i = 0; 401 for (String channel : settings.channelSet) { 402 cmd += (i > 0 ? "," : "") + channel; 403 ++i; 404 } 405 cmd += ">"; 406 } 407 if (settings.maxApForDistance != BatchedScanSettings.UNSPECIFIED) { 408 cmd += " RTT=" + settings.maxApForDistance; 409 } 410 return doStringCommand(cmd); 411 } 412 413 public String getBatchedScanResults() { 414 return doStringCommand("DRIVER WLS_BATCHING GET"); 415 } 416 417 public boolean startDriver() { 418 return doBooleanCommand("DRIVER START"); 419 } 420 421 public boolean stopDriver() { 422 return doBooleanCommand("DRIVER STOP"); 423 } 424 425 426 /** 427 * Start filtering out Multicast V4 packets 428 * @return {@code true} if the operation succeeded, {@code false} otherwise 429 * 430 * Multicast filtering rules work as follows: 431 * 432 * The driver can filter multicast (v4 and/or v6) and broadcast packets when in 433 * a power optimized mode (typically when screen goes off). 434 * 435 * In order to prevent the driver from filtering the multicast/broadcast packets, we have to 436 * add a DRIVER RXFILTER-ADD rule followed by DRIVER RXFILTER-START to make the rule effective 437 * 438 * DRIVER RXFILTER-ADD Num 439 * where Num = 0 - Unicast, 1 - Broadcast, 2 - Mutil4 or 3 - Multi6 440 * 441 * and DRIVER RXFILTER-START 442 * In order to stop the usage of these rules, we do 443 * 444 * DRIVER RXFILTER-STOP 445 * DRIVER RXFILTER-REMOVE Num 446 * where Num is as described for RXFILTER-ADD 447 * 448 * The SETSUSPENDOPT driver command overrides the filtering rules 449 */ 450 public boolean startFilteringMulticastV4Packets() { 451 return doBooleanCommand("DRIVER RXFILTER-STOP") 452 && doBooleanCommand("DRIVER RXFILTER-REMOVE 2") 453 && doBooleanCommand("DRIVER RXFILTER-START"); 454 } 455 456 /** 457 * Stop filtering out Multicast V4 packets. 458 * @return {@code true} if the operation succeeded, {@code false} otherwise 459 */ 460 public boolean stopFilteringMulticastV4Packets() { 461 return doBooleanCommand("DRIVER RXFILTER-STOP") 462 && doBooleanCommand("DRIVER RXFILTER-ADD 2") 463 && doBooleanCommand("DRIVER RXFILTER-START"); 464 } 465 466 /** 467 * Start filtering out Multicast V6 packets 468 * @return {@code true} if the operation succeeded, {@code false} otherwise 469 */ 470 public boolean startFilteringMulticastV6Packets() { 471 return doBooleanCommand("DRIVER RXFILTER-STOP") 472 && doBooleanCommand("DRIVER RXFILTER-REMOVE 3") 473 && doBooleanCommand("DRIVER RXFILTER-START"); 474 } 475 476 /** 477 * Stop filtering out Multicast V6 packets. 478 * @return {@code true} if the operation succeeded, {@code false} otherwise 479 */ 480 public boolean stopFilteringMulticastV6Packets() { 481 return doBooleanCommand("DRIVER RXFILTER-STOP") 482 && doBooleanCommand("DRIVER RXFILTER-ADD 3") 483 && doBooleanCommand("DRIVER RXFILTER-START"); 484 } 485 486 public int getBand() { 487 String ret = doStringCommand("DRIVER GETBAND"); 488 if (!TextUtils.isEmpty(ret)) { 489 //reply is "BAND X" where X is the band 490 String[] tokens = ret.split(" "); 491 try { 492 if (tokens.length == 2) return Integer.parseInt(tokens[1]); 493 } catch (NumberFormatException e) { 494 return -1; 495 } 496 } 497 return -1; 498 } 499 500 public boolean setBand(int band) { 501 return doBooleanCommand("DRIVER SETBAND " + band); 502 } 503 504 /** 505 * Sets the bluetooth coexistence mode. 506 * 507 * @param mode One of {@link #BLUETOOTH_COEXISTENCE_MODE_DISABLED}, 508 * {@link #BLUETOOTH_COEXISTENCE_MODE_ENABLED}, or 509 * {@link #BLUETOOTH_COEXISTENCE_MODE_SENSE}. 510 * @return Whether the mode was successfully set. 511 */ 512 public boolean setBluetoothCoexistenceMode(int mode) { 513 return doBooleanCommand("DRIVER BTCOEXMODE " + mode); 514 } 515 516 /** 517 * Enable or disable Bluetooth coexistence scan mode. When this mode is on, 518 * some of the low-level scan parameters used by the driver are changed to 519 * reduce interference with A2DP streaming. 520 * 521 * @param isSet whether to enable or disable this mode 522 * @return {@code true} if the command succeeded, {@code false} otherwise. 523 */ 524 public boolean setBluetoothCoexistenceScanMode(boolean setCoexScanMode) { 525 if (setCoexScanMode) { 526 return doBooleanCommand("DRIVER BTCOEXSCAN-START"); 527 } else { 528 return doBooleanCommand("DRIVER BTCOEXSCAN-STOP"); 529 } 530 } 531 532 public void enableSaveConfig() { 533 doBooleanCommand("SET update_config 1"); 534 } 535 536 public boolean saveConfig() { 537 return doBooleanCommand("SAVE_CONFIG"); 538 } 539 540 public boolean addToBlacklist(String bssid) { 541 if (TextUtils.isEmpty(bssid)) return false; 542 return doBooleanCommand("BLACKLIST " + bssid); 543 } 544 545 public boolean clearBlacklist() { 546 return doBooleanCommand("BLACKLIST clear"); 547 } 548 549 public boolean setSuspendOptimizations(boolean enabled) { 550 // if (mSuspendOptEnabled == enabled) return true; 551 mSuspendOptEnabled = enabled; 552 553 Log.e("native", "do suspend " + enabled); 554 if (enabled) { 555 return doBooleanCommand("DRIVER SETSUSPENDMODE 1"); 556 } else { 557 return doBooleanCommand("DRIVER SETSUSPENDMODE 0"); 558 } 559 } 560 561 public boolean setCountryCode(String countryCode) { 562 return doBooleanCommand("DRIVER COUNTRY " + countryCode.toUpperCase(Locale.ROOT)); 563 } 564 565 public void enableBackgroundScan(boolean enable) { 566 if (enable) { 567 doBooleanCommand("SET pno 1"); 568 } else { 569 doBooleanCommand("SET pno 0"); 570 } 571 } 572 573 public void enableAutoConnect(boolean enable) { 574 if (enable) { 575 doBooleanCommand("STA_AUTOCONNECT 1"); 576 } else { 577 doBooleanCommand("STA_AUTOCONNECT 0"); 578 } 579 } 580 581 public void setScanInterval(int scanInterval) { 582 doBooleanCommand("SCAN_INTERVAL " + scanInterval); 583 } 584 585 public void startTdls(String macAddr, boolean enable) { 586 if (enable) { 587 doBooleanCommand("TDLS_DISCOVER " + macAddr); 588 doBooleanCommand("TDLS_SETUP " + macAddr); 589 } else { 590 doBooleanCommand("TDLS_TEARDOWN " + macAddr); 591 } 592 } 593 594 /** Example output: 595 * RSSI=-65 596 * LINKSPEED=48 597 * NOISE=9999 598 * FREQUENCY=0 599 */ 600 public String signalPoll() { 601 return doStringCommandWithoutLogging("SIGNAL_POLL"); 602 } 603 604 /** Example outout: 605 * TXGOOD=396 606 * TXBAD=1 607 */ 608 public String pktcntPoll() { 609 return doStringCommand("PKTCNT_POLL"); 610 } 611 612 public void bssFlush() { 613 doBooleanCommand("BSS_FLUSH 0"); 614 } 615 616 public boolean startWpsPbc(String bssid) { 617 if (TextUtils.isEmpty(bssid)) { 618 return doBooleanCommand("WPS_PBC"); 619 } else { 620 return doBooleanCommand("WPS_PBC " + bssid); 621 } 622 } 623 624 public boolean startWpsPbc(String iface, String bssid) { 625 synchronized (mLock) { 626 if (TextUtils.isEmpty(bssid)) { 627 return doBooleanCommandNative("IFNAME=" + iface + " WPS_PBC"); 628 } else { 629 return doBooleanCommandNative("IFNAME=" + iface + " WPS_PBC " + bssid); 630 } 631 } 632 } 633 634 public boolean startWpsPinKeypad(String pin) { 635 if (TextUtils.isEmpty(pin)) return false; 636 return doBooleanCommand("WPS_PIN any " + pin); 637 } 638 639 public boolean startWpsPinKeypad(String iface, String pin) { 640 if (TextUtils.isEmpty(pin)) return false; 641 synchronized (mLock) { 642 return doBooleanCommandNative("IFNAME=" + iface + " WPS_PIN any " + pin); 643 } 644 } 645 646 647 public String startWpsPinDisplay(String bssid) { 648 if (TextUtils.isEmpty(bssid)) { 649 return doStringCommand("WPS_PIN any"); 650 } else { 651 return doStringCommand("WPS_PIN " + bssid); 652 } 653 } 654 655 public String startWpsPinDisplay(String iface, String bssid) { 656 synchronized (mLock) { 657 if (TextUtils.isEmpty(bssid)) { 658 return doStringCommandNative("IFNAME=" + iface + " WPS_PIN any"); 659 } else { 660 return doStringCommandNative("IFNAME=" + iface + " WPS_PIN " + bssid); 661 } 662 } 663 } 664 665 /* Configures an access point connection */ 666 public boolean startWpsRegistrar(String bssid, String pin) { 667 if (TextUtils.isEmpty(bssid) || TextUtils.isEmpty(pin)) return false; 668 return doBooleanCommand("WPS_REG " + bssid + " " + pin); 669 } 670 671 public boolean cancelWps() { 672 return doBooleanCommand("WPS_CANCEL"); 673 } 674 675 public boolean setPersistentReconnect(boolean enabled) { 676 int value = (enabled == true) ? 1 : 0; 677 return doBooleanCommand("SET persistent_reconnect " + value); 678 } 679 680 public boolean setDeviceName(String name) { 681 return doBooleanCommand("SET device_name " + name); 682 } 683 684 public boolean setDeviceType(String type) { 685 return doBooleanCommand("SET device_type " + type); 686 } 687 688 public boolean setConfigMethods(String cfg) { 689 return doBooleanCommand("SET config_methods " + cfg); 690 } 691 692 public boolean setManufacturer(String value) { 693 return doBooleanCommand("SET manufacturer " + value); 694 } 695 696 public boolean setModelName(String value) { 697 return doBooleanCommand("SET model_name " + value); 698 } 699 700 public boolean setModelNumber(String value) { 701 return doBooleanCommand("SET model_number " + value); 702 } 703 704 public boolean setSerialNumber(String value) { 705 return doBooleanCommand("SET serial_number " + value); 706 } 707 708 public boolean setP2pSsidPostfix(String postfix) { 709 return doBooleanCommand("SET p2p_ssid_postfix " + postfix); 710 } 711 712 public boolean setP2pGroupIdle(String iface, int time) { 713 synchronized (mLock) { 714 return doBooleanCommandNative("IFNAME=" + iface + " SET p2p_group_idle " + time); 715 } 716 } 717 718 public void setPowerSave(boolean enabled) { 719 if (enabled) { 720 doBooleanCommand("SET ps 1"); 721 } else { 722 doBooleanCommand("SET ps 0"); 723 } 724 } 725 726 public boolean setP2pPowerSave(String iface, boolean enabled) { 727 synchronized (mLock) { 728 if (enabled) { 729 return doBooleanCommandNative("IFNAME=" + iface + " P2P_SET ps 1"); 730 } else { 731 return doBooleanCommandNative("IFNAME=" + iface + " P2P_SET ps 0"); 732 } 733 } 734 } 735 736 public boolean setWfdEnable(boolean enable) { 737 return doBooleanCommand("SET wifi_display " + (enable ? "1" : "0")); 738 } 739 740 public boolean setWfdDeviceInfo(String hex) { 741 return doBooleanCommand("WFD_SUBELEM_SET 0 " + hex); 742 } 743 744 /** 745 * "sta" prioritizes STA connection over P2P and "p2p" prioritizes 746 * P2P connection over STA 747 */ 748 public boolean setConcurrencyPriority(String s) { 749 return doBooleanCommand("P2P_SET conc_pref " + s); 750 } 751 752 public boolean p2pFind() { 753 return doBooleanCommand("P2P_FIND"); 754 } 755 756 public boolean p2pFind(int timeout) { 757 if (timeout <= 0) { 758 return p2pFind(); 759 } 760 return doBooleanCommand("P2P_FIND " + timeout); 761 } 762 763 public boolean p2pStopFind() { 764 return doBooleanCommand("P2P_STOP_FIND"); 765 } 766 767 public boolean p2pListen() { 768 return doBooleanCommand("P2P_LISTEN"); 769 } 770 771 public boolean p2pListen(int timeout) { 772 if (timeout <= 0) { 773 return p2pListen(); 774 } 775 return doBooleanCommand("P2P_LISTEN " + timeout); 776 } 777 778 public boolean p2pExtListen(boolean enable, int period, int interval) { 779 if (enable && interval < period) { 780 return false; 781 } 782 return doBooleanCommand("P2P_EXT_LISTEN" 783 + (enable ? (" " + period + " " + interval) : "")); 784 } 785 786 public boolean p2pSetChannel(int lc, int oc) { 787 if (DBG) Log.d(mTAG, "p2pSetChannel: lc="+lc+", oc="+oc); 788 789 if (lc >=1 && lc <= 11) { 790 if (!doBooleanCommand("P2P_SET listen_channel " + lc)) { 791 return false; 792 } 793 } else if (lc != 0) { 794 return false; 795 } 796 797 if (oc >= 1 && oc <= 165 ) { 798 int freq = (oc <= 14 ? 2407 : 5000) + oc * 5; 799 return doBooleanCommand("P2P_SET disallow_freq 1000-" 800 + (freq - 5) + "," + (freq + 5) + "-6000"); 801 } else if (oc == 0) { 802 /* oc==0 disables "P2P_SET disallow_freq" (enables all freqs) */ 803 return doBooleanCommand("P2P_SET disallow_freq \"\""); 804 } 805 806 return false; 807 } 808 809 public boolean p2pFlush() { 810 return doBooleanCommand("P2P_FLUSH"); 811 } 812 813 /* p2p_connect <peer device address> <pbc|pin|PIN#> [label|display|keypad] 814 [persistent] [join|auth] [go_intent=<0..15>] [freq=<in MHz>] */ 815 public String p2pConnect(WifiP2pConfig config, boolean joinExistingGroup) { 816 if (config == null) return null; 817 List<String> args = new ArrayList<String>(); 818 WpsInfo wps = config.wps; 819 args.add(config.deviceAddress); 820 821 switch (wps.setup) { 822 case WpsInfo.PBC: 823 args.add("pbc"); 824 break; 825 case WpsInfo.DISPLAY: 826 if (TextUtils.isEmpty(wps.pin)) { 827 args.add("pin"); 828 } else { 829 args.add(wps.pin); 830 } 831 args.add("display"); 832 break; 833 case WpsInfo.KEYPAD: 834 args.add(wps.pin); 835 args.add("keypad"); 836 break; 837 case WpsInfo.LABEL: 838 args.add(wps.pin); 839 args.add("label"); 840 default: 841 break; 842 } 843 844 if (config.netId == WifiP2pGroup.PERSISTENT_NET_ID) { 845 args.add("persistent"); 846 } 847 848 if (joinExistingGroup) { 849 args.add("join"); 850 } else { 851 //TODO: This can be adapted based on device plugged in state and 852 //device battery state 853 int groupOwnerIntent = config.groupOwnerIntent; 854 if (groupOwnerIntent < 0 || groupOwnerIntent > 15) { 855 groupOwnerIntent = DEFAULT_GROUP_OWNER_INTENT; 856 } 857 args.add("go_intent=" + groupOwnerIntent); 858 } 859 860 String command = "P2P_CONNECT "; 861 for (String s : args) command += s + " "; 862 863 return doStringCommand(command); 864 } 865 866 public boolean p2pCancelConnect() { 867 return doBooleanCommand("P2P_CANCEL"); 868 } 869 870 public boolean p2pProvisionDiscovery(WifiP2pConfig config) { 871 if (config == null) return false; 872 873 switch (config.wps.setup) { 874 case WpsInfo.PBC: 875 return doBooleanCommand("P2P_PROV_DISC " + config.deviceAddress + " pbc"); 876 case WpsInfo.DISPLAY: 877 //We are doing display, so provision discovery is keypad 878 return doBooleanCommand("P2P_PROV_DISC " + config.deviceAddress + " keypad"); 879 case WpsInfo.KEYPAD: 880 //We are doing keypad, so provision discovery is display 881 return doBooleanCommand("P2P_PROV_DISC " + config.deviceAddress + " display"); 882 default: 883 break; 884 } 885 return false; 886 } 887 888 public boolean p2pGroupAdd(boolean persistent) { 889 if (persistent) { 890 return doBooleanCommand("P2P_GROUP_ADD persistent"); 891 } 892 return doBooleanCommand("P2P_GROUP_ADD"); 893 } 894 895 public boolean p2pGroupAdd(int netId) { 896 return doBooleanCommand("P2P_GROUP_ADD persistent=" + netId); 897 } 898 899 public boolean p2pGroupRemove(String iface) { 900 if (TextUtils.isEmpty(iface)) return false; 901 synchronized (mLock) { 902 return doBooleanCommandNative("IFNAME=" + iface + " P2P_GROUP_REMOVE " + iface); 903 } 904 } 905 906 public boolean p2pReject(String deviceAddress) { 907 return doBooleanCommand("P2P_REJECT " + deviceAddress); 908 } 909 910 /* Invite a peer to a group */ 911 public boolean p2pInvite(WifiP2pGroup group, String deviceAddress) { 912 if (TextUtils.isEmpty(deviceAddress)) return false; 913 914 if (group == null) { 915 return doBooleanCommand("P2P_INVITE peer=" + deviceAddress); 916 } else { 917 return doBooleanCommand("P2P_INVITE group=" + group.getInterface() 918 + " peer=" + deviceAddress + " go_dev_addr=" + group.getOwner().deviceAddress); 919 } 920 } 921 922 /* Reinvoke a persistent connection */ 923 public boolean p2pReinvoke(int netId, String deviceAddress) { 924 if (TextUtils.isEmpty(deviceAddress) || netId < 0) return false; 925 926 return doBooleanCommand("P2P_INVITE persistent=" + netId + " peer=" + deviceAddress); 927 } 928 929 public String p2pGetSsid(String deviceAddress) { 930 return p2pGetParam(deviceAddress, "oper_ssid"); 931 } 932 933 public String p2pGetDeviceAddress() { 934 String status = status(); 935 if (status == null) return ""; 936 937 String[] tokens = status.split("\n"); 938 for (String token : tokens) { 939 if (token.startsWith("p2p_device_address=")) { 940 String[] nameValue = token.split("="); 941 if (nameValue.length != 2) break; 942 return nameValue[1]; 943 } 944 } 945 return ""; 946 } 947 948 public int getGroupCapability(String deviceAddress) { 949 int gc = 0; 950 if (TextUtils.isEmpty(deviceAddress)) return gc; 951 String peerInfo = p2pPeer(deviceAddress); 952 if (TextUtils.isEmpty(peerInfo)) return gc; 953 954 String[] tokens = peerInfo.split("\n"); 955 for (String token : tokens) { 956 if (token.startsWith("group_capab=")) { 957 String[] nameValue = token.split("="); 958 if (nameValue.length != 2) break; 959 try { 960 return Integer.decode(nameValue[1]); 961 } catch(NumberFormatException e) { 962 return gc; 963 } 964 } 965 } 966 return gc; 967 } 968 969 public String p2pPeer(String deviceAddress) { 970 return doStringCommand("P2P_PEER " + deviceAddress); 971 } 972 973 private String p2pGetParam(String deviceAddress, String key) { 974 if (deviceAddress == null) return null; 975 976 String peerInfo = p2pPeer(deviceAddress); 977 if (peerInfo == null) return null; 978 String[] tokens= peerInfo.split("\n"); 979 980 key += "="; 981 for (String token : tokens) { 982 if (token.startsWith(key)) { 983 String[] nameValue = token.split("="); 984 if (nameValue.length != 2) break; 985 return nameValue[1]; 986 } 987 } 988 return null; 989 } 990 991 public boolean p2pServiceAdd(WifiP2pServiceInfo servInfo) { 992 /* 993 * P2P_SERVICE_ADD bonjour <query hexdump> <RDATA hexdump> 994 * P2P_SERVICE_ADD upnp <version hex> <service> 995 * 996 * e.g) 997 * [Bonjour] 998 * # IP Printing over TCP (PTR) (RDATA=MyPrinter._ipp._tcp.local.) 999 * P2P_SERVICE_ADD bonjour 045f697070c00c000c01 094d795072696e746572c027 1000 * # IP Printing over TCP (TXT) (RDATA=txtvers=1,pdl=application/postscript) 1001 * P2P_SERVICE_ADD bonjour 096d797072696e746572045f697070c00c001001 1002 * 09747874766572733d311a70646c3d6170706c69636174696f6e2f706f7374736372797074 1003 * 1004 * [UPnP] 1005 * P2P_SERVICE_ADD upnp 10 uuid:6859dede-8574-59ab-9332-123456789012 1006 * P2P_SERVICE_ADD upnp 10 uuid:6859dede-8574-59ab-9332-123456789012::upnp:rootdevice 1007 * P2P_SERVICE_ADD upnp 10 uuid:6859dede-8574-59ab-9332-123456789012::urn:schemas-upnp 1008 * -org:device:InternetGatewayDevice:1 1009 * P2P_SERVICE_ADD upnp 10 uuid:6859dede-8574-59ab-9322-123456789012::urn:schemas-upnp 1010 * -org:service:ContentDirectory:2 1011 */ 1012 for (String s : servInfo.getSupplicantQueryList()) { 1013 String command = "P2P_SERVICE_ADD"; 1014 command += (" " + s); 1015 if (!doBooleanCommand(command)) { 1016 return false; 1017 } 1018 } 1019 return true; 1020 } 1021 1022 public boolean p2pServiceDel(WifiP2pServiceInfo servInfo) { 1023 /* 1024 * P2P_SERVICE_DEL bonjour <query hexdump> 1025 * P2P_SERVICE_DEL upnp <version hex> <service> 1026 */ 1027 for (String s : servInfo.getSupplicantQueryList()) { 1028 String command = "P2P_SERVICE_DEL "; 1029 1030 String[] data = s.split(" "); 1031 if (data.length < 2) { 1032 return false; 1033 } 1034 if ("upnp".equals(data[0])) { 1035 command += s; 1036 } else if ("bonjour".equals(data[0])) { 1037 command += data[0]; 1038 command += (" " + data[1]); 1039 } else { 1040 return false; 1041 } 1042 if (!doBooleanCommand(command)) { 1043 return false; 1044 } 1045 } 1046 return true; 1047 } 1048 1049 public boolean p2pServiceFlush() { 1050 return doBooleanCommand("P2P_SERVICE_FLUSH"); 1051 } 1052 1053 public String p2pServDiscReq(String addr, String query) { 1054 String command = "P2P_SERV_DISC_REQ"; 1055 command += (" " + addr); 1056 command += (" " + query); 1057 1058 return doStringCommand(command); 1059 } 1060 1061 public boolean p2pServDiscCancelReq(String id) { 1062 return doBooleanCommand("P2P_SERV_DISC_CANCEL_REQ " + id); 1063 } 1064 1065 /* Set the current mode of miracast operation. 1066 * 0 = disabled 1067 * 1 = operating as source 1068 * 2 = operating as sink 1069 */ 1070 public void setMiracastMode(int mode) { 1071 // Note: optional feature on the driver. It is ok for this to fail. 1072 doBooleanCommand("DRIVER MIRACAST " + mode); 1073 } 1074 1075 public String getNfcWpsConfigurationToken(int netId) { 1076 return doStringCommand("WPS_NFC_CONFIG_TOKEN WPS " + netId); 1077 } 1078 1079 public boolean fetchAnqp(String bssid, String subtypes) { 1080 return doBooleanCommand("ANQP_GET " + bssid + " " + subtypes); 1081 } 1082 1083 1084 /* WIFI HAL support */ 1085 1086 private static final String TAG = "WifiNative-HAL"; 1087 private static long sWifiHalHandle = 0; /* used by JNI to save wifi_handle */ 1088 private static long[] sWifiIfaceHandles = null; /* used by JNI to save interface handles */ 1089 private static int sWlan0Index = -1; 1090 private static int sP2p0Index = -1; 1091 1092 private static boolean sHalIsStarted = false; 1093 1094 private static native boolean startHalNative(); 1095 private static native void stopHalNative(); 1096 private static native void waitForHalEventNative(); 1097 1098 private static class MonitorThread extends Thread { 1099 public void run() { 1100 Log.i(TAG, "Waiting for HAL events mWifiHalHandle=" + Long.toString(sWifiHalHandle)); 1101 waitForHalEventNative(); 1102 } 1103 } 1104 1105 synchronized public static boolean startHal() { 1106 Log.i(TAG, "startHal"); 1107 synchronized (mLock) { 1108 if (sHalIsStarted) 1109 return true; 1110 if (startHalNative()) { 1111 new MonitorThread().start(); 1112 sHalIsStarted = true; 1113 return true; 1114 } else { 1115 Log.i(TAG, "Could not start hal"); 1116 sHalIsStarted = false; 1117 return false; 1118 } 1119 } 1120 } 1121 1122 synchronized public static void stopHal() { 1123 stopHalNative(); 1124 } 1125 1126 private static native int getInterfacesNative(); 1127 1128 synchronized public static int getInterfaces() { 1129 synchronized (mLock) { 1130 int num = getInterfacesNative(); 1131 for (int i = 0; i < num; i++) { 1132 String name = getInterfaceNameNative(i); 1133 Log.i(TAG, "interface[" + i + "] = " + name); 1134 if (name.equals("wlan0")) { 1135 sWlan0Index = i; 1136 } else if (name.equals("p2p0")) { 1137 sP2p0Index = i; 1138 } 1139 } 1140 return num; 1141 } 1142 } 1143 1144 private static native String getInterfaceNameNative(int index); 1145 1146 public static void printInterfaceNames() { 1147 synchronized (mLock) { 1148 for (int i = 0; i < sWifiIfaceHandles.length; i++) { 1149 String name = getInterfaceNameNative(i); 1150 Log.i(TAG, "interface[" + i + "] = " + name); 1151 } 1152 } 1153 } 1154 1155 public static class ScanCapabilities { 1156 public int max_scan_cache_size; // in number of scan results?? 1157 public int max_scan_buckets; 1158 public int max_ap_cache_per_scan; 1159 public int max_rssi_sample_size; 1160 public int max_scan_reporting_threshold; // in number of scan results?? 1161 public int max_hotlist_aps; 1162 public int max_significant_wifi_change_aps; 1163 } 1164 1165 public static boolean getScanCapabilities(ScanCapabilities capabilities) { 1166 return getScanCapabilitiesNative(sWlan0Index, capabilities); 1167 } 1168 1169 private static native boolean getScanCapabilitiesNative( 1170 int iface, ScanCapabilities capabilities); 1171 1172 private static native boolean startScanNative(int iface, int id, ScanSettings settings); 1173 private static native boolean stopScanNative(int iface, int id); 1174 private static native ScanResult[] getScanResultsNative(int iface, boolean flush); 1175 private static native WifiLinkLayerStats getWifiLinkLayerStatsNative(int iface); 1176 1177 public static class ChannelSettings { 1178 int frequency; 1179 int dwell_time_ms; 1180 boolean passive; 1181 } 1182 1183 public static class BucketSettings { 1184 int bucket; 1185 int band; 1186 int period_ms; 1187 int report_events; 1188 int num_channels; 1189 ChannelSettings channels[] = new ChannelSettings[8]; 1190 } 1191 1192 public static class ScanSettings { 1193 int base_period_ms; 1194 int max_ap_per_scan; 1195 int report_threshold; 1196 int num_buckets; 1197 BucketSettings buckets[] = new BucketSettings[8]; 1198 } 1199 1200 public static interface ScanEventHandler { 1201 void onScanResultsAvailable(); 1202 void onFullScanResult(ScanResult fullScanResult); 1203 void onScanPaused(); 1204 void onScanRestarted(); 1205 } 1206 1207 synchronized static void onScanResultsAvailable(int id) { 1208 sScanEventHandler.onScanResultsAvailable(); 1209 } 1210 1211 synchronized static void onFullScanResult(int id, ScanResult result, byte bytes[]) { 1212 Log.i(TAG, "Got a full scan results event, ssid = " + result.SSID + ", " + 1213 "num = " + bytes.length); 1214 1215 int num = 0; 1216 for (int i = 0; i < bytes.length; ) { 1217 num++; 1218 int type = (int) bytes[i] & 0xFF; 1219 int len = (int) bytes[i + 1] & 0xFF; 1220 if (len < 0) { 1221 Log.e(TAG, "bad length; returning"); 1222 return; 1223 } 1224 i += len + 2; 1225 Log.i(TAG, "bytes[" + i + "] = [" + type + ", " + len + "]" + ", next = " + i); 1226 } 1227 1228 ScanResult.InformationElement elements[] = new ScanResult.InformationElement[num]; 1229 for (int i = 0, index = 0; i < num; i++) { 1230 int type = (int) bytes[index] & 0xFF; 1231 int len = (int) bytes[index + 1] & 0xFF; 1232 Log.i(TAG, "index = " + index + ", type = " + type + ", len = " + len); 1233 ScanResult.InformationElement elem = new ScanResult.InformationElement(); 1234 elem.id = type; 1235 elem.bytes = new byte[len]; 1236 for (int j = 0; j < len; j++) { 1237 elem.bytes[j] = bytes[index + j + 2]; 1238 } 1239 elements[i] = elem; 1240 index += (len + 2); 1241 } 1242 1243 result.informationElements = elements; 1244 sScanEventHandler.onFullScanResult(result); 1245 } 1246 1247 private static int sScanCmdId = 0; 1248 private static ScanEventHandler sScanEventHandler; 1249 private static ScanSettings sScanSettings; 1250 1251 synchronized public static boolean startScan( 1252 ScanSettings settings, ScanEventHandler eventHandler) { 1253 synchronized (mLock) { 1254 1255 if (sScanCmdId != 0) { 1256 stopScan(); 1257 } else if (sScanSettings != null || sScanEventHandler != null) { 1258 /* current scan is paused; no need to stop it */ 1259 } 1260 1261 sScanCmdId = getNewCmdIdLocked(); 1262 1263 sScanSettings = settings; 1264 sScanEventHandler = eventHandler; 1265 1266 if (startScanNative(sWlan0Index, sScanCmdId, settings) == false) { 1267 sScanEventHandler = null; 1268 sScanSettings = null; 1269 return false; 1270 } 1271 1272 return true; 1273 } 1274 } 1275 1276 synchronized public static void stopScan() { 1277 synchronized (mLock) { 1278 stopScanNative(sWlan0Index, sScanCmdId); 1279 sScanSettings = null; 1280 sScanEventHandler = null; 1281 sScanCmdId = 0; 1282 } 1283 } 1284 1285 synchronized public static void pauseScan() { 1286 synchronized (mLock) { 1287 if (sScanCmdId != 0 && sScanSettings != null && sScanEventHandler != null) { 1288 Log.d(TAG, "Pausing scan"); 1289 stopScanNative(sWlan0Index, sScanCmdId); 1290 sScanCmdId = 0; 1291 sScanEventHandler.onScanPaused(); 1292 } 1293 } 1294 } 1295 1296 synchronized public static void restartScan() { 1297 synchronized (mLock) { 1298 if (sScanCmdId == 0 && sScanSettings != null && sScanEventHandler != null) { 1299 Log.d(TAG, "Restarting scan"); 1300 startScan(sScanSettings, sScanEventHandler); 1301 sScanEventHandler.onScanRestarted(); 1302 } 1303 } 1304 } 1305 1306 synchronized public static ScanResult[] getScanResults() { 1307 synchronized (mLock) { 1308 return getScanResultsNative(sWlan0Index, /* flush = */ false); 1309 } 1310 } 1311 1312 public static interface HotlistEventHandler { 1313 void onHotlistApFound (ScanResult[]result); 1314 } 1315 1316 private static int sHotlistCmdId = 0; 1317 private static HotlistEventHandler sHotlistEventHandler; 1318 1319 private native static boolean setHotlistNative(int iface, int id, 1320 WifiScanner.HotlistSettings settings); 1321 private native static boolean resetHotlistNative(int iface, int id); 1322 1323 synchronized public static boolean setHotlist(WifiScanner.HotlistSettings settings, 1324 HotlistEventHandler eventHandler) { 1325 synchronized (mLock) { 1326 if (sHotlistCmdId != 0) { 1327 return false; 1328 } else { 1329 sHotlistCmdId = getNewCmdIdLocked(); 1330 } 1331 1332 sHotlistEventHandler = eventHandler; 1333 if (setHotlistNative(sWlan0Index, sScanCmdId, settings) == false) { 1334 sHotlistEventHandler = null; 1335 return false; 1336 } 1337 1338 return true; 1339 } 1340 } 1341 1342 synchronized public static void resetHotlist() { 1343 synchronized (mLock) { 1344 if (sHotlistCmdId != 0) { 1345 resetHotlistNative(sWlan0Index, sHotlistCmdId); 1346 sHotlistCmdId = 0; 1347 sHotlistEventHandler = null; 1348 } 1349 } 1350 } 1351 1352 synchronized public static void onHotlistApFound(int id, ScanResult[] results) { 1353 synchronized (mLock) { 1354 sHotlistEventHandler.onHotlistApFound(results); 1355 } 1356 } 1357 1358 public static interface SignificantWifiChangeEventHandler { 1359 void onChangesFound(ScanResult[] result); 1360 } 1361 1362 private static SignificantWifiChangeEventHandler sSignificantWifiChangeHandler; 1363 private static int sSignificantWifiChangeCmdId; 1364 1365 private static native boolean trackSignificantWifiChangeNative( 1366 int iface, int id, WifiScanner.WifiChangeSettings settings); 1367 private static native boolean untrackSignificantWifiChangeNative(int iface, int id); 1368 1369 synchronized public static boolean trackSignificantWifiChange( 1370 WifiScanner.WifiChangeSettings settings, SignificantWifiChangeEventHandler handler) { 1371 synchronized (mLock) { 1372 if (sSignificantWifiChangeCmdId != 0) { 1373 return false; 1374 } else { 1375 sSignificantWifiChangeCmdId = getNewCmdIdLocked(); 1376 } 1377 1378 sSignificantWifiChangeHandler = handler; 1379 if (trackSignificantWifiChangeNative(sWlan0Index, sScanCmdId, settings) == false) { 1380 sHotlistEventHandler = null; 1381 return false; 1382 } 1383 1384 return true; 1385 } 1386 } 1387 1388 synchronized static void untrackSignificantWifiChange() { 1389 synchronized (mLock) { 1390 if (sSignificantWifiChangeCmdId != 0) { 1391 untrackSignificantWifiChangeNative(sWlan0Index, sSignificantWifiChangeCmdId); 1392 sSignificantWifiChangeCmdId = 0; 1393 sSignificantWifiChangeHandler = null; 1394 } 1395 } 1396 } 1397 1398 synchronized static void onSignificantWifiChange(int id, ScanResult[] results) { 1399 synchronized (mLock) { 1400 sSignificantWifiChangeHandler.onChangesFound(results); 1401 } 1402 } 1403 1404 synchronized public static WifiLinkLayerStats getWifiLinkLayerStats() { 1405 synchronized (mLock) { 1406 if (!sHalIsStarted) 1407 startHal(); 1408 if (sHalIsStarted) 1409 return getWifiLinkLayerStatsNative(sWlan0Index); 1410 } 1411 return null; 1412 } 1413} 1414