WifiAutoJoinController.java revision ed9938883ae2dade81c8be6cd6ceaef3febd5239
1f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle/* 262f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle * Copyright (C) 2014 The Android Open Source Project 3f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 4f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * Licensed under the Apache License, Version 2.0 (the "License"); 5f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * you may not use this file except in compliance with the License. 6f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * You may obtain a copy of the License at 7f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 8f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * http://www.apache.org/licenses/LICENSE-2.0 9f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 10f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * Unless required by applicable law or agreed to in writing, software 11f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * distributed under the License is distributed on an "AS IS" BASIS, 12f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * See the License for the specific language governing permissions and 14f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * limitations under the License. 15f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle */ 16f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 17f22d23092ab37286a5ef9d257d5bb32c421d2669vandwallepackage com.android.server.wifi; 18f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 19f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.content.Context; 20f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 21f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.net.NetworkKey; 22f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.net.NetworkScoreManager; 230c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalleimport android.net.WifiKey; 24f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.net.wifi.WifiConfiguration; 25f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.net.wifi.ScanResult; 26f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.net.wifi.WifiManager; 27f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 28f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.os.SystemClock; 29f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.util.Log; 30f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 310c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalleimport java.util.ArrayList; 320c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalleimport java.util.Collection; 33f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport java.util.Iterator; 34f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport java.util.HashMap; 35f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport java.util.List; 36f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport java.util.Date; 37f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 38f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle/** 39f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * AutoJoin controller is responsible for WiFi Connect decision 40f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 41f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * It runs in the thread context of WifiStateMachine 42f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 43f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle */ 44f22d23092ab37286a5ef9d257d5bb32c421d2669vandwallepublic class WifiAutoJoinController { 45f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 46f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private Context mContext; 47f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiStateMachine mWifiStateMachine; 48f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiConfigStore mWifiConfigStore; 49f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiTrafficPoller mWifiTrafficPoller; 50f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiNative mWifiNative; 51f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 52f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private NetworkScoreManager scoreManager; 53f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiNetworkScoreCache mNetworkScoreCache; 54f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 55f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private static final String TAG = "WifiAutoJoinController "; 56ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle private static boolean DBG = false; 57ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle private static boolean VDBG = false; 58f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private static final boolean mStaStaSupported = false; 59f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private static final int SCAN_RESULT_CACHE_SIZE = 80; 60f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 61453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle private String mCurrentConfigurationKey = null; //used by autojoin 62f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 63f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private HashMap<String, ScanResult> scanResultCache = 64f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle new HashMap<String, ScanResult>(); 65f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 66f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiAutoJoinController(Context c, WifiStateMachine w, WifiConfigStore s, 67f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiTrafficPoller t, WifiNative n) { 68f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mContext = c; 69f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiStateMachine = w; 70f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiConfigStore = s; 71f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiTrafficPoller = t; 72f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiNative = n; 73f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mNetworkScoreCache = null; 74f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle scoreManager = (NetworkScoreManager) mContext.getSystemService(Context.NETWORK_SCORE_SERVICE); 75f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (scoreManager == null) 76f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("Registered scoreManager NULL " + " service " + Context.NETWORK_SCORE_SERVICE); 77f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle else 78f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("Registered scoreManager NOT NULL" + " service " + Context.NETWORK_SCORE_SERVICE); 79f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 80f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (scoreManager != null) { 81f13817203179f41620514718c8668ae7e418f8afJeff Davidson mNetworkScoreCache = new WifiNetworkScoreCache(mContext); 82f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle scoreManager.registerNetworkScoreCache(NetworkKey.TYPE_WIFI, mNetworkScoreCache); 83f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 84f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("No network score service: Couldnt register as a WiFi score Manager, type=" 85f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(NetworkKey.TYPE_WIFI) 86f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + " service " + Context.NETWORK_SCORE_SERVICE); 87f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mNetworkScoreCache = null; 88f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 89f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 90f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 91ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle void enableVerboseLogging(int verbose) { 92ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (verbose > 0 ) { 93ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle VDBG = true; 94ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } else { 95ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle VDBG = false; 96ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 97ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 98ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle 99ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle 100ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle int mScanResultMaximumAge = 30000; /* milliseconds unit */ 101f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 102ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle /* 103ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * flush out scan results older than mScanResultMaximumAge 104ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * 105ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * */ 106f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private void ageScanResultsOut(int delay) { 107f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (delay <= 0) { 108f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle delay = mScanResultMaximumAge; //something sane 109f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 110f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle Date now = new Date(); 111f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle long milli = now.getTime(); 112f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 113f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("ageScanResultsOut delay " + Integer.valueOf(delay) + " size " 114f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.valueOf(scanResultCache.size()) + " now " + Long.valueOf(milli)); 115f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 116f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 117f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle Iterator<HashMap.Entry<String,ScanResult>> iter = scanResultCache.entrySet().iterator(); 118f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle while (iter.hasNext()) { 119f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle HashMap.Entry<String,ScanResult> entry = iter.next(); 120f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ScanResult result = entry.getValue(); 121f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 122f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ((result.seen + delay) < milli) { 123f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle iter.remove(); 124f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 125f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 126f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 127f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 128f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void addToScanCache(List<ScanResult> scanList) { 129f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration associatedConfig; 130f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1310c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle ArrayList<NetworkKey> unknownScanResults = new ArrayList<NetworkKey>(); 1320c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle 133f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for(ScanResult result: scanList) { 134f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle result.seen = System.currentTimeMillis(); 135f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 136f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ScanResult sr = scanResultCache.get(result.BSSID); 137f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (sr != null) { 138f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle // if there was a previous cache result for this BSSID, average the RSSI values 139f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 140f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int previous_rssi = sr.level; 141f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle long previously_seen_milli = sr.seen; 142f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 143f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* average RSSI with previously seen instances of this scan result */ 144f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int avg_rssi = result.level; 145f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 146f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ((previously_seen_milli > 0) 147f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle && (previously_seen_milli < mScanResultMaximumAge/2)) { 148f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 149f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* 150f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 151f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * previously_seen_milli = 0 => RSSI = 0.5 * previous_seen_rssi + 0.5 * new_rssi 152f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 153f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * If previously_seen_milli is 15+ seconds old: 154f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * previously_seen_milli = 15000 => RSSI = new_rssi 155f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 156f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle */ 157f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 158f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle double alpha = 0.5 - (double)previously_seen_milli 159f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle / (double)mScanResultMaximumAge; 160f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 161f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle avg_rssi = (int)((double)avg_rssi * (1-alpha) + (double)previous_rssi * alpha); 162f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1630c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle 1640c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle 1650c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle 166f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 167f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle result.level = avg_rssi; 168f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 169f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //remove the previous Scan Result 170f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle scanResultCache.remove(result.BSSID); 1710c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle } else { 1720c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle if (!mNetworkScoreCache.isScoredNetwork(result)) { 1730c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle //TODO : properly handle SSID formatting, i.e. among others check for string 1740c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle //TODO : representing hexadecimal SSIDs 1750c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle WifiKey wkey = new WifiKey("\"" + result.SSID + "\"", result.BSSID); 1760c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle NetworkKey nkey = new NetworkKey(wkey); 1770c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle //if we don't know this scan result then request a score to Herrevad 1780c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle unknownScanResults.add(nkey); 1790c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle } 180f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 181f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 182f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle scanResultCache.put(result.BSSID, new ScanResult(result)); 183f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 184f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ScanResult srn = scanResultCache.get(result.BSSID); 185f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 186f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //add this BSSID to the scanResultCache of the relevant WifiConfiguration 187f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle associatedConfig = mWifiConfigStore.updateSavedNetworkHistory(result); 188f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1890c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle //try to associate this BSSID to an existing Saved WifiConfiguration 190f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (associatedConfig == null) { 191f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle associatedConfig = mWifiConfigStore.associateWithConfiguration(result); 192f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (associatedConfig != null) { 193f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 194f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("addToScanCache save associated config " 195f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + associatedConfig.SSID + " with " + associatedConfig.SSID); 196f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 197f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiStateMachine.sendMessage(WifiManager.SAVE_NETWORK, associatedConfig); 198f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 199f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 200f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 2010c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle 2020c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle if (unknownScanResults.size() != 0) { 2030c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle NetworkKey[] newKeys = 2040c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle unknownScanResults.toArray(new NetworkKey[unknownScanResults.size()]); 2050c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle //kick the score manager, we will get updated scores asynchronously 2060c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle scoreManager.requestScores(newKeys); 2070c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle } 208f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 209f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 210f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void logDbg(String message) { 211ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg(message, true); 212ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 213ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle 214ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle void logDbg(String message, boolean stackTrace) { 215f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle long now = SystemClock.elapsedRealtimeNanos(); 216f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle String ts = String.format("[%,d us] ", now/1000); 217ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (stackTrace) { 218ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle Log.e(TAG, ts + message + " stack:" 219ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + Thread.currentThread().getStackTrace()[2].getMethodName() + " - " 220ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + Thread.currentThread().getStackTrace()[3].getMethodName() + " - " 221ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + Thread.currentThread().getStackTrace()[4].getMethodName() + " - " 222ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + Thread.currentThread().getStackTrace()[5].getMethodName()); 223ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } else { 224ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle Log.e(TAG, ts + message); 225ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 226f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 227f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 228f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* called directly from WifiStateMachine */ 229f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void newSupplicantResults() { 230f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle List<ScanResult> scanList = mWifiStateMachine.syncGetScanResultsList(); 231f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle addToScanCache(scanList); 232f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ageScanResultsOut(mScanResultMaximumAge); 233f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (DBG) 234f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("newSupplicantResults size=" + Integer.valueOf(scanResultCache.size()) ); 235f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 236f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle attemptAutoJoin(); 237f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiConfigStore.writeKnownNetworkHistory(); 238f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 239f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 240f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 241f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 242f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* not used at the moment 243f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * should be a call back from WifiScanner HAL ?? 244f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * this function is not hooked and working yet, it will receive scan results from WifiScanners 245f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * with the list of IEs,then populate the capabilities by parsing the IEs and inject the scan 246f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * results as normal. 247f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle */ 248f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void newHalScanResults() { 249f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle List<ScanResult> scanList = null;//mWifiScanner.syncGetScanResultsList(); 250f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle String akm = WifiParser.parse_akm(null, null); 251f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg(akm); 252f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle addToScanCache(scanList); 253f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ageScanResultsOut(0); 254f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle attemptAutoJoin(); 255f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiConfigStore.writeKnownNetworkHistory(); 256f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 257f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 258f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* network link quality changed, called directly from WifiTrafficPoller, 259f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle or by listening to Link Quality intent */ 260f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void linkQualitySignificantChange() { 261f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle attemptAutoJoin(); 262f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 263f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 264f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* 265f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * compare a WifiConfiguration against the current network, return a delta score 266f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * If not associated, and the candidate will always be better 267f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * For instance if the candidate is a home network versus an unknown public wifi, 268f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * the delta will be infinite, else compare Kepler scores etc… 269f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ***/ 270f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private int compareNetwork(WifiConfiguration candidate) { 271f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration currentNetwork = mWifiStateMachine.getCurrentWifiConfiguration(); 272f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (currentNetwork == null) 273f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return 1000; 274f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 275f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (candidate.configKey(true).equals(currentNetwork.configKey(true))) { 276f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return -1; 277f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 278f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 279f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int order = compareWifiConfigurations(currentNetwork, candidate); 280f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 281f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (order > 0) { 282f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //ascending: currentNetwork < candidate 283f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return 10; //will try switch over to the candidate 284f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 285f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 286f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return 0; 287f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 288f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 289ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle /** 290ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * update the network history fields fo that configuration 291ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * - if userTriggered, we mark the configuration as "non selfAdded" since the user has seen it 292ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * and took over management 293ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * - if it is a "connect", remember which network were there at the point of the connect, so 294ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * as those networks get a relative lower score than the selected configuration 29562f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle * 296ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * @param netId 297ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * @param userTriggered : if the update come from WiFiManager 298ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * @param connect : if the update includes a connect 299117be607246604e875de62aa8cdd99700b77a2b4vandwalle **/ 30062f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle public void updateConfigurationHistory(int netId, boolean userTriggered, boolean connect) { 301f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration selected = mWifiConfigStore.getWifiConfiguration(netId); 302f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (selected == null) { 303f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return; 304f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 305f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 30662f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (userTriggered) { 307ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle // reenable autojoin for this network, 30862f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle // since the user want to connect to this configuration 30962f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle selected.autoJoinStatus = WifiConfiguration.AUTO_JOIN_ENABLED; 31062f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle selected.selfAdded = false; 31162f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 312f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 313f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (DBG) { 314f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (selected.connectChoices != null) { 315ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory will update " 316f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(netId) + " now: " 317f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(selected.connectChoices.size())); 318f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 319ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory will update " 320f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(netId)); 321f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 322f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 323f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 324ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (connect && userTriggered) { 325ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle boolean found = false; 32662f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle List<WifiConfiguration> networks = 32762f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle mWifiConfigStore.getRecentConfiguredNetworks(12000, false); 32862f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (networks != null) { 32962f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle for (WifiConfiguration config : networks) { 33062f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (DBG) 331ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory got " + config.SSID); 332f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 33362f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (selected.configKey(true).equals(config.configKey(true))) { 334ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle found = true; 33562f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle continue; 33662f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 337f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 33862f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle int rssi = WifiConfiguration.INVALID_RSSI; 33962f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (config.visibility != null) { 34062f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle rssi = config.visibility.rssi5; 34162f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (config.visibility.rssi24 > rssi) 34262f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle rssi = config.visibility.rssi24; 34362f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 34462f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (rssi < -80) { 34562f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle continue; 34662f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 347f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 348ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle //the selected configuration was preferred over a recently seen config 349ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle //hence remember the user's choice: 350ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle //add the recently seen config to the selected's connectChoices array 351ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle 352ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (selected.connectChoices == null) { 353ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle selected.connectChoices = new HashMap<String, Integer>(); 354ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 355ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle 356ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory add a choice " + selected.configKey(true) 35762f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle + " over " + config.configKey(true) + " RSSI " + Integer.toString(rssi)); 35862f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle selected.connectChoices.put(config.configKey(true), rssi); 359f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 36062f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (config.connectChoices != null) { 361ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (VDBG) { 362ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory will remove " 36362f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle + selected.configKey(true) + " from " + config.configKey(true)); 364ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 36562f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle //remove the selected from the recently seen config's array 36662f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle config.connectChoices.remove(selected.configKey(true)); 36762f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 368ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 369ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (found == false) { 370ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle // log an error for now but do something stringer later 371ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle // we will need a new scan before attempting to connect to this 372ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle // configuration anyhow and thus we can process the scan results then 373ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory try to connect to an old network!! : " 374ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + selected.configKey()); 37562f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 376f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 37762f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (selected.connectChoices != null) { 37862f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (VDBG) 379ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory " + Integer.toString(netId) 38062f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle + " now: " + Integer.toString(selected.connectChoices.size())); 38162f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 382ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle 383ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle mWifiConfigStore.writeKnownNetworkHistory(); 384f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 385f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 386f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 387f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 388f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void printChoices(WifiConfiguration config) { 389f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int num = 0; 390f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config.connectChoices!= null) { 391f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle num = config.connectChoices.size(); 392f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 393f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 394f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("printChoices " + config.SSID + " num choices: " + Integer.toString(num)); 395f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config.connectChoices!= null) { 396f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for (String key : config.connectChoices.keySet()) { 397f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg(" " + key); 398f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 399f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 400f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 401f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 402f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 403ede1310be531a84faa08f02c3fd243448dd936ddvandwalle 404ede1310be531a84faa08f02c3fd243448dd936ddvandwalle 405f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle boolean hasConnectChoice(WifiConfiguration source, WifiConfiguration target) { 406f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle boolean found = false; 407f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (source == null) 408f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return false; 409f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (target == null) 410f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return false; 411f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 412f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (source.connectChoices != null) { 413f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ( source.connectChoices.get(target.configKey(true)) != null) { 414f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle found = true; 415f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 416f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 417f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 418f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (source.linkedConfigurations != null) { 419f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for (String key : source.linkedConfigurations.keySet()) { 420f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(key); 421f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config != null) { 422f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config.connectChoices != null) { 423f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config.connectChoices.get(target.configKey(true)) != null) { 424f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle found = true; 425f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 426f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 427f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 428f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 429f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 430f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return found; 431f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 432f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 433f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int compareWifiConfigurationsRSSI(WifiConfiguration a, WifiConfiguration b) { 434f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int order = 0; 435f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int boost5 = 25; 436f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 437f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration.Visibility astatus = a.visibility; 438f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration.Visibility bstatus = b.visibility; 439f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (astatus == null || bstatus == null) { 440453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle //error -> cant happen, need to throw en exception 441f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("compareWifiConfigurations NULL band status!"); 442f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return 0; 443f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 444453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle if ((astatus.rssi5 > -70) && (bstatus.rssi5 == WifiConfiguration.INVALID_RSSI) 445f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle && ((astatus.rssi5+boost5) > (bstatus.rssi24))) { 446f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //a is seen on 5GHz with good RSSI, greater rssi than b 447f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //a is of higher priority - descending 448f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle order = -1; 449453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle } else if ((bstatus.rssi5 > -70) && (astatus.rssi5 == WifiConfiguration.INVALID_RSSI) 450f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle && ((bstatus.rssi5+boost5) > (bstatus.rssi24))) { 451f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //b is seen on 5GHz with good RSSI, greater rssi than a 452f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //a is of lower priority - ascending 453f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle order = 1; 454f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 455f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return order; 456f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 457f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 458f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int compareWifiConfigurations(WifiConfiguration a, WifiConfiguration b) { 459f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int order = 0; 460117be607246604e875de62aa8cdd99700b77a2b4vandwalle String lastSelectedConfiguration = mWifiConfigStore.getLastSelectedConfiguration(); 461f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle boolean linked = false; 462f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 463453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle if ((a.linkedConfigurations != null) && (b.linkedConfigurations != null) 464453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle && (a.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED) 465453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle && (b.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED)) { 466f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ((a.linkedConfigurations.get(b.configKey(true))!= null) 467f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle && (b.linkedConfigurations.get(a.configKey(true))!= null)) { 468f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle linked = true; 469f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 470f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 471f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 472f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (a.ephemeral && b.ephemeral == false) { 473f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 474453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("compareWifiConfigurations ephemeral and prefers " + b.configKey() 475453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + " over " + a.configKey()); 476f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 477f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return 1; //b is of higher priority - ascending 478f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 479f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (b.ephemeral && a.ephemeral == false) { 480f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 481453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("compareWifiConfigurations ephemeral and prefers " +a.configKey() 482453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + " over " + b.configKey()); 483f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 484f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return -1; //a is of higher priority - descending 485f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 486f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 487f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int boost5 = 25; 488453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle //apply Hysteresis: boost the RSSI value of the currently connected configuration 489453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle int aRssiBoost = 0; 490453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle int bRssiBoost = 0; 491453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle if (null != mCurrentConfigurationKey) { 492453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle if (a.configKey().equals(mCurrentConfigurationKey)) { 493453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle aRssiBoost += 10; 494453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle } else if (b.configKey().equals(mCurrentConfigurationKey)) { 495453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle bRssiBoost += 10; 496453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle } 497453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle } 498f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (linked) { 499f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle // then we try prefer 5GHz, and try to ignore user's choice 500f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration.Visibility astatus = a.visibility; 501f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration.Visibility bstatus = b.visibility; 502f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (astatus == null || bstatus == null) { 503f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //error 504f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("compareWifiConfigurations NULL band status!"); 505f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return 0; 506f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 507f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 508f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 509f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("compareWifiConfigurations linked: " + Integer.toString(astatus.rssi5) 510f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + "," + Integer.toString(astatus.rssi24) + " " 511f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(bstatus.rssi5) + "," 512f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(bstatus.rssi24)); 513f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 514f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 515453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle if ((astatus.rssi5 > -70) && (bstatus.rssi5 <= WifiConfiguration.INVALID_RSSI) 516453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle && (astatus.rssi5+boost5+aRssiBoost) > (bstatus.rssi24+bRssiBoost)) { 517453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle //in this case: a has 5GHz and b doesn't have 5GHz 518453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle //compare a's 5GHz RSSI to b's 5GHz RSSI 519453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle 520f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //a is seen on 5GHz with good RSSI, greater rssi than b 521f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //a is of higher priority - descending 522f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle order = -10; 523f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 524f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 525453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("compareWifiConfigurations linked and prefers " + a.configKey() 526453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + " over " + b.configKey() 527f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + " due to 5GHz RSSI " + Integer.toString(astatus.rssi5) 528f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + " over: 5=" + Integer.toString(bstatus.rssi5) 529f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + ", 2.4=" + Integer.toString(bstatus.rssi5)); 530f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 531453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle } else if ((bstatus.rssi5 > -70) && (astatus.rssi5 <= WifiConfiguration.INVALID_RSSI) 532453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle && ((bstatus.rssi5+boost5+bRssiBoost) > (astatus.rssi24+aRssiBoost))) { 533453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle //in this case: b has 5GHz and a doesn't have 5GHz 534453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle 535f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //b is seen on 5GHz with good RSSI, greater rssi than a 536f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //a is of lower priority - ascending 537f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 538453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("compareWifiConfigurations linked and prefers " + b.configKey() 539453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + " over " + a.configKey() + " due to 5GHz RSSI " 540f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(astatus.rssi5) + " over: 5=" 541f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(bstatus.rssi5) + ", 2.4=" 542f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(bstatus.rssi5)); 543f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 544f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle order = 10; 545453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle } else { 546453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle //TODO: handle cases where configurations are dual band 547f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 548f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 549ede1310be531a84faa08f02c3fd243448dd936ddvandwalle 550ede1310be531a84faa08f02c3fd243448dd936ddvandwalle //compare by user's choice. 551f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (hasConnectChoice(a, b)) { 552f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //a is of higher priority - descending 553f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle order = order -2; 554f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 555453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("compareWifiConfigurations prefers -2 " + a.configKey() 556453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + " over " + b.configKey() 557ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + " due to user choice order -> " + Integer.toString(order)); 558f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 559f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 560f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 561f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (hasConnectChoice(b, a)) { 562f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //a is of lower priority - ascending 563f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle order = order + 2; 564f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 565453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("compareWifiConfigurations prefers +2 " + b.configKey() + " over " 566453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + a.configKey() + " due to user choice order ->" + Integer.toString(order)); 567f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 568f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 569f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 570ede1310be531a84faa08f02c3fd243448dd936ddvandwalle //TODO count the number of association rejection 571ede1310be531a84faa08f02c3fd243448dd936ddvandwalle // and use this to adjust the order by more than +/- 3 572ede1310be531a84faa08f02c3fd243448dd936ddvandwalle if ((a.status == WifiConfiguration.Status.DISABLED) 573ede1310be531a84faa08f02c3fd243448dd936ddvandwalle && (a.disableReason == WifiConfiguration.DISABLED_ASSOCIATION_REJECT)) { 574ede1310be531a84faa08f02c3fd243448dd936ddvandwalle //a is of lower priority - ascending 575ede1310be531a84faa08f02c3fd243448dd936ddvandwalle //lower the comparison score a bit 576ede1310be531a84faa08f02c3fd243448dd936ddvandwalle order = order +3; 577ede1310be531a84faa08f02c3fd243448dd936ddvandwalle } 578ede1310be531a84faa08f02c3fd243448dd936ddvandwalle if ((b.status == WifiConfiguration.Status.DISABLED) 579ede1310be531a84faa08f02c3fd243448dd936ddvandwalle && (b.disableReason == WifiConfiguration.DISABLED_ASSOCIATION_REJECT)) { 580ede1310be531a84faa08f02c3fd243448dd936ddvandwalle //a is of higher priority - descending 581ede1310be531a84faa08f02c3fd243448dd936ddvandwalle //lower the comparison score a bit 582ede1310be531a84faa08f02c3fd243448dd936ddvandwalle order = order -3; 583ede1310be531a84faa08f02c3fd243448dd936ddvandwalle } 584ede1310be531a84faa08f02c3fd243448dd936ddvandwalle 585ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if ((lastSelectedConfiguration != null) 586ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle && a.configKey().equals(lastSelectedConfiguration)) { 587ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle // a is the last selected configuration, so keep it above connect choices 588ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle //by giving a -4 (whereas connect choice preference gives +2) 589ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle order = order - 4; 590ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (VDBG) { 591453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("compareWifiConfigurations prefers -4 " + a.configKey() 592453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + " over " + b.configKey() + " because a is the last selected -> " 593ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + Integer.toString(order)); 594ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 595ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } else if ((lastSelectedConfiguration != null) 596ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle && b.configKey().equals(lastSelectedConfiguration)) { 597ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle // b is the last selected configuration, so keep it above connect choices 598ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle //by giving a +4 (whereas connect choice preference gives -2) 599ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle order = order + 4; 600ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (VDBG) { 601453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("compareWifiConfigurations prefers +4 " + a.configKey() 602453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + " over " + b.configKey() + " because b is the last selected -> " 603ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + Integer.toString(order)); 604ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 605ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 606ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle 607f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (order == 0) { 608f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //we don't know anything - pick the last seen i.e. K behavior 609f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //we should do this only for recently picked configurations 610f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (a.priority > b.priority) { 611f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //a is of higher priority - descending 612f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 613453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("compareWifiConfigurations prefers -1 " + a.configKey() + " over " 614453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + b.configKey() + " due to priority"); 615f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 616f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 617f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle order = -1; 618f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else if (a.priority < b.priority) { 619f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //a is of lower priority - ascending 620f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 621453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("compareWifiConfigurations prefers +1 " + b.configKey() + " over " 622453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + a.configKey() + " due to priority"); 623f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 624f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 625f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle order = 1; 626f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 627f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //maybe just look at RSSI or band 628f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 629453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("compareWifiConfigurations prefers +1 " + b.configKey() + " over " 630453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + a.configKey() + " due to nothing"); 631f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 632f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 633f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle order = compareWifiConfigurationsRSSI(a, b); //compare RSSI 634f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 635f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 636f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 637f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle String sorder = " == "; 638f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (order > 0) 639f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle sorder = " < "; 640f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (order < 0) 641f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle sorder = " > "; 642f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 643f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 644453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("compareWifiConfigurations Done: " + a.configKey() + sorder 645453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + b.configKey() + " order " + Integer.toString(order)); 646f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 647f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 648f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return order; 649f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 650f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 651f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* attemptAutoJoin function implement the core of the a network switching algorithm */ 652f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void attemptAutoJoin() { 653453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle //reset the currentConfiguration Key, and set it only if WifiStateMachine and 654453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle // supplicant agree 655453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle mCurrentConfigurationKey = null; 656453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle WifiConfiguration currentConfiguration = mWifiStateMachine.getCurrentWifiConfiguration(); 657453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle 658f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration candidate = null; 659f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 660f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* obtain the subset of recently seen networks */ 661f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle List<WifiConfiguration> list = mWifiConfigStore.getRecentConfiguredNetworks(3000, true); 662f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (list == null) { 663f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) logDbg("attemptAutoJoin nothing"); 664f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return; 665f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 666f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 667f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* find the currently connected network: ask the supplicant directly */ 668f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle String val = mWifiNative.status(); 669f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle String status[] = val.split("\\r?\\n"); 670f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 671f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("attemptAutoJoin() status=" + val + " split=" 672f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(status.length)); 673f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 674f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 675f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int currentNetId = -1; 676f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for (String key : status) { 677f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (key.regionMatches(0, "id=", 0, 3)) { 678f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int idx = 3; 679f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle currentNetId = 0; 680f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle while (idx < key.length()) { 681f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle char c = key.charAt(idx); 682f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 683f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ((c >= 0x30) && (c <= 0x39)) { 684f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle currentNetId *= 10; 685f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle currentNetId += c - 0x30; 686f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle idx++; 687f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 688f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle break; 689f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 690f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 691f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 692f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 693ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (DBG) { 694ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle logDbg("attemptAutoJoin() num recent config " + Integer.toString(list.size()) 695ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle + " ---> currentId=" + Integer.toString(currentNetId)); 696ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 697f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 698453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle if (currentConfiguration != null) { 699453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle if (currentNetId != currentConfiguration.networkId) { 700453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("attemptAutoJoin() ERROR wpa_supplicant out of sync nid=" 701453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + Integer.toString(currentNetId) + " WifiStateMachine=" 702453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + Integer.toString(currentConfiguration.networkId)); 703453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle //I think this can happen due do race conditions, now what to do?? 704453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle // -> throw an exception, or, 705453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle // -> dont use the current configuration at all for autojoin 706453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle //and hope that autojoining will kick us out of this state. 707453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle currentConfiguration = null; 708453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle } else { 709453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle mCurrentConfigurationKey = currentConfiguration.configKey(); 710453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle } 711453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle } 712453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle 713f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* select Best Network candidate from known WifiConfigurations */ 714f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for (WifiConfiguration config : list) { 715f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ((config.status == WifiConfiguration.Status.DISABLED) 716f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle && (config.disableReason == WifiConfiguration.DISABLED_AUTH_FAILURE)) { 717ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (DBG) { 718ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle logDbg("attemptAutoJoin skip candidate due to auth failure key " 719ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle + config.configKey(true)); 720ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 721f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle continue; 722f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 723453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle 724453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle if (config.autoJoinStatus >= WifiConfiguration.AUTO_JOIN_TEMPORARY_DISABLED) { 725453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle //avoid temporarily disabled networks altogether 726453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle //TODO: implement a better logic which will reenable the network after some time 727ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (DBG) { 728ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle logDbg("attemptAutoJoin skip candidate due to auto join status " 729ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle + Integer.toString(config.autoJoinStatus) + " key " 730ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle + config.configKey(true)); 731ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 732f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle continue; 733f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 734f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 735f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config.networkId == currentNetId) { 736ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (DBG) { 737ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle logDbg("attemptAutoJoin skip current candidate " + Integer.toString(currentNetId) 738ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle + " key " + config.configKey(true)); 739ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 740f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle continue; 741f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 742f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 743ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (DBG) { 744ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle logDbg("attemptAutoJoin trying candidate id=" + config.networkId + " " 745ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle + config.SSID + " key " + config.configKey(true)); 746ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 747f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 748f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (candidate == null) { 749f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle candidate = config; 750f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 751f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 752453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("attemptAutoJoin will compare candidate " + candidate.configKey() 753453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + " with " + config.configKey() + " key " + config.configKey(true)); 754f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 755f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 756f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int order = compareWifiConfigurations(candidate, config); 757f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 758f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 759f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("attemptAutoJoin did compare candidate " + Integer.toString(order)); 760f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 761f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 762f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (order > 0) { 763f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //ascending : candidate < config 764f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle candidate = config; 765f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 766f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 767f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 768f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 769f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* now, go thru scan result to try finding a better Herrevad network */ 770f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (mNetworkScoreCache != null) { 771f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int rssi5 = WifiConfiguration.INVALID_RSSI; 772f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int rssi24 = WifiConfiguration.INVALID_RSSI; 773f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration.Visibility visibility; 774f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (candidate != null) { 775f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle rssi5 = candidate.visibility.rssi5; 776f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle rssi24 = candidate.visibility.rssi24; 777f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 778f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 779f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //get current date 780f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle Date now = new Date(); 781f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle long now_ms = now.getTime(); 782f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 783f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (rssi5 < -60 && rssi24 < -70) { 784f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for (ScanResult result : scanResultCache.values()) { 785f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ((now_ms - result.seen) < 3000) { 786f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int score = mNetworkScoreCache.getNetworkScore(result); 787f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (score > 0) { 788f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle // try any arbitrary formula for now, adding apple and oranges, 789f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle // i.e. adding network score and "dBm over noise" 790f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (result.frequency < 4000) { 791f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ((result.level + score) > (rssi24 -40)) { 792f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle // force it as open, TBD should we otherwise verify that this 793f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle // BSSID only supports open?? 794f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle result.capabilities = ""; 795f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 796f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //switch to this scan result 797f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle candidate = 798f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiConfigStore.wifiConfigurationFromScanResult(result); 799f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle candidate.ephemeral = true; 800f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 801f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 802f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ((result.level + score) > (rssi5 -30)) { 803f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle // force it as open, TBD should we otherwise verify that this 804f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle // BSSID only supports open?? 805f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle result.capabilities = ""; 806f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 807f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //switch to this scan result 808f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle candidate = 809f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiConfigStore.wifiConfigurationFromScanResult(result); 810f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle candidate.ephemeral = true; 811f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 812f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 813f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 814f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 815f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 816f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 817f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 818f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (candidate != null) { 819453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle /* if candidate is found, check the state of the connection so as 820453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle to decide if we should be acting on this candidate and switching over */ 821453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle if (VDBG) { 822453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("attemptAutoJoin did find candidate " + candidate.configKey() 823f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + " key " + candidate.configKey(true)); 824453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle } 825f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 826f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int networkDelta = compareNetwork(candidate); 827ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (DBG && (networkDelta > 0)) { 828453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("attemptAutoJoin did find candidate " + candidate.configKey() 829f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + " for delta " + Integer.toString(networkDelta)); 830ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 831f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* ASK traffic poller permission to switch: 832f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for instance, 833f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if user is currently streaming voice traffic, 834f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle then don’t switch regardless of the delta */ 835f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 836f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (mWifiTrafficPoller.shouldSwitchNetwork(networkDelta)) { 837f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (mStaStaSupported) { 838453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("mStaStaSupported --> error do nothing now "); 839f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 840f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (DBG) { 841453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("AutoJoin auto connect with netId " 842f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(candidate.networkId) 843453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + " to " + candidate.configKey()); 844f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 845f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 846f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiStateMachine.sendMessage(WifiStateMachine.CMD_AUTO_CONNECT, 847f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle candidate.networkId); 848f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //mWifiConfigStore.enableNetworkWithoutBroadcast(candidate.networkId, true); 849f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 850f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //we would do the below only if we want to persist the new choice 851f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //mWifiConfigStore.selectNetwork(candidate.networkId); 852f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 853f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 854f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 855f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 856f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) logDbg("Done attemptAutoJoin"); 857f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 858f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle} 859f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 860