WifiAutoJoinController.java revision b0b0cc202b7d7aaad7b3f69d73e9b58ea2968b05
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; 20f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.net.NetworkKey; 21f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.net.NetworkScoreManager; 220c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalleimport android.net.WifiKey; 2377f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvistimport android.net.wifi.ScanResult; 2477f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvistimport android.net.wifi.WifiConfiguration; 258639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidsonimport android.net.wifi.WifiConfiguration.KeyMgmt; 2677f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvistimport android.net.wifi.WifiConnectionStatistics; 27f57f8918b8c5872ff4bb141fa9e407bec8442e8dvandwalleimport android.os.Process; 2877f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvistimport android.provider.Settings; 29c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalleimport android.text.TextUtils; 30f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.util.Log; 31f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 32ef1567e413c9ed5f5c4fdb9e354861632f7b2f87Jan Nordqvistimport com.android.server.wifi.anqp.ANQPElement; 33ef1567e413c9ed5f5c4fdb9e354861632f7b2f87Jan Nordqvistimport com.android.server.wifi.anqp.Constants; 34ef1567e413c9ed5f5c4fdb9e354861632f7b2f87Jan Nordqvistimport com.android.server.wifi.hotspot2.ANQPData; 35ef1567e413c9ed5f5c4fdb9e354861632f7b2f87Jan Nordqvistimport com.android.server.wifi.hotspot2.AnqpCache; 36ef1567e413c9ed5f5c4fdb9e354861632f7b2f87Jan Nordqvistimport com.android.server.wifi.hotspot2.Chronograph; 37ef1567e413c9ed5f5c4fdb9e354861632f7b2f87Jan Nordqvistimport com.android.server.wifi.hotspot2.NetworkDetail; 38ef1567e413c9ed5f5c4fdb9e354861632f7b2f87Jan Nordqvistimport com.android.server.wifi.hotspot2.PasspointMatch; 39ef1567e413c9ed5f5c4fdb9e354861632f7b2f87Jan Nordqvistimport com.android.server.wifi.hotspot2.PasspointMatchInfo; 40ef1567e413c9ed5f5c4fdb9e354861632f7b2f87Jan Nordqvistimport com.android.server.wifi.hotspot2.SupplicantBridge; 41ef1567e413c9ed5f5c4fdb9e354861632f7b2f87Jan Nordqvistimport com.android.server.wifi.hotspot2.pps.HomeSP; 42ef1567e413c9ed5f5c4fdb9e354861632f7b2f87Jan Nordqvist 4377f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvistimport java.io.BufferedReader; 4477f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvistimport java.io.IOException; 4577f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvistimport java.io.StringReader; 460c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalleimport java.util.ArrayList; 4777f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvistimport java.util.Arrays; 48d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpandeimport java.util.BitSet; 49ef1567e413c9ed5f5c4fdb9e354861632f7b2f87Jan Nordqvistimport java.util.Collection; 50dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalleimport java.util.Collections; 51dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalleimport java.util.Comparator; 52f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport java.util.HashMap; 5377f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvistimport java.util.Iterator; 54f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport java.util.List; 55ef1567e413c9ed5f5c4fdb9e354861632f7b2f87Jan Nordqvistimport java.util.Map; 56f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 57f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle/** 58f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * AutoJoin controller is responsible for WiFi Connect decision 59f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 60f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * It runs in the thread context of WifiStateMachine 61f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 62f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle */ 63f22d23092ab37286a5ef9d257d5bb32c421d2669vandwallepublic class WifiAutoJoinController { 64f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 65f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private Context mContext; 66f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiStateMachine mWifiStateMachine; 67f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiConfigStore mWifiConfigStore; 68f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiNative mWifiNative; 69f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 70f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private NetworkScoreManager scoreManager; 71f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiNetworkScoreCache mNetworkScoreCache; 72f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 73f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private static final String TAG = "WifiAutoJoinController "; 74ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle private static boolean DBG = false; 75ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle private static boolean VDBG = false; 76f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private static final boolean mStaStaSupported = false; 77f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 78c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle public static int mScanResultMaximumAge = 40000; /* milliseconds unit */ 79833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle public static int mScanResultAutoJoinAge = 5000; /* milliseconds unit */ 80c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 81453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle private String mCurrentConfigurationKey = null; //used by autojoin 82f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 8325ee2d5d30434712b28aef6eec9460035101e493Vinit Deshpande private final HashMap<String, ScanDetail> scanResultCache = new HashMap<>(); 84f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 85c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle private WifiConnectionStatistics mWifiConnectionStatistics; 86c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 87dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle /** 88dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * Whether to allow connections to untrusted networks. 89dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle */ 908639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson private boolean mAllowUntrustedConnections = false; 918639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson 92c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle /* For debug purpose only: if the scored override a score */ 93c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle boolean didOverride = false; 94c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle 95931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Lose the non-auth failure blacklisting after 8 hours 964dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle private final static long loseBlackListHardMilli = 1000 * 60 * 60 * 8; 97931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Lose some temporary blacklisting after 30 minutes 984dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle private final static long loseBlackListSoftMilli = 1000 * 60 * 30; 9927355a942653264388e909a4276196ee63e57811vandwalle 100dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle /** 101dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * @see android.provider.Settings.Global#WIFI_EPHEMERAL_OUT_OF_RANGE_TIMEOUT_MS 102dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle */ 10316fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson private static final long DEFAULT_EPHEMERAL_OUT_OF_RANGE_TIMEOUT_MS = 1000 * 60; // 1 minute 10416fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson 105b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle public static final int AUTO_JOIN_IDLE = 0; 106b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle public static final int AUTO_JOIN_ROAMING = 1; 107b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle public static final int AUTO_JOIN_EXTENDED_ROAMING = 2; 108b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle public static final int AUTO_JOIN_OUT_OF_NETWORK_ROAMING = 3; 109b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle 11097b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle public static final int HIGH_THRESHOLD_MODIFIER = 5; 11197b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle 11287df79e235c64f7062d0c50658fe1999b1225435Pierre Vandwalle public static final int MAX_RSSI_DELTA = 50; 11387df79e235c64f7062d0c50658fe1999b1225435Pierre Vandwalle 1141ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // Below are AutoJoin wide parameters indicating if we should be aggressive before joining 1151ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // weak network. Note that we cannot join weak network that are going to be marked as unanted by 1161ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // ConnectivityService because this will trigger link flapping. 1171ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle /** 1181ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle * There was a non-blacklisted configuration that we bailed from because of a weak signal 1191ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle */ 1201ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle boolean didBailDueToWeakRssi = false; 1211ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle /** 1221ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle * number of time we consecutively bailed out of an eligible network because its signal 1231ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle * was too weak 1241ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle */ 1251ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle int weakRssiBailCount = 0; 1261ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle 127f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiAutoJoinController(Context c, WifiStateMachine w, WifiConfigStore s, 128c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle WifiConnectionStatistics st, WifiNative n) { 129f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mContext = c; 130f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiStateMachine = w; 131f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiConfigStore = s; 132f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiNative = n; 133f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mNetworkScoreCache = null; 134c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle mWifiConnectionStatistics = st; 13521bc54cb37a0085b1c909cb4d55ebb12a2facefbvandwalle scoreManager = 13621bc54cb37a0085b1c909cb4d55ebb12a2facefbvandwalle (NetworkScoreManager) mContext.getSystemService(Context.NETWORK_SCORE_SERVICE); 137f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (scoreManager == null) 138f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("Registered scoreManager NULL " + " service " + Context.NETWORK_SCORE_SERVICE); 139f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 140f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (scoreManager != null) { 141f13817203179f41620514718c8668ae7e418f8afJeff Davidson mNetworkScoreCache = new WifiNetworkScoreCache(mContext); 142f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle scoreManager.registerNetworkScoreCache(NetworkKey.TYPE_WIFI, mNetworkScoreCache); 143f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 144f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("No network score service: Couldnt register as a WiFi score Manager, type=" 145f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(NetworkKey.TYPE_WIFI) 146f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + " service " + Context.NETWORK_SCORE_SERVICE); 147f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mNetworkScoreCache = null; 148f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 149f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 150f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 151ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle void enableVerboseLogging(int verbose) { 152dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle if (verbose > 0) { 153abde872adced15dfb6781fb71959453d963326dbYuhao Zheng DBG = true; 154ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle VDBG = true; 155ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } else { 156abde872adced15dfb6781fb71959453d963326dbYuhao Zheng DBG = false; 157ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle VDBG = false; 158ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 159ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 160ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle 161931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 162931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * Flush out scan results older than mScanResultMaximumAge 163931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 164f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private void ageScanResultsOut(int delay) { 165f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (delay <= 0) { 166931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle delay = mScanResultMaximumAge; // Something sane 167f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 168b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle long milli = System.currentTimeMillis(); 169f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 170f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("ageScanResultsOut delay " + Integer.valueOf(delay) + " size " 171f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.valueOf(scanResultCache.size()) + " now " + Long.valueOf(milli)); 172f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 173f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 174dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle Iterator<HashMap.Entry<String, ScanDetail>> iter = scanResultCache.entrySet().iterator(); 175f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle while (iter.hasNext()) { 176dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle HashMap.Entry<String, ScanDetail> entry = iter.next(); 17725ee2d5d30434712b28aef6eec9460035101e493Vinit Deshpande ScanDetail scanDetail = entry.getValue(); 17825ee2d5d30434712b28aef6eec9460035101e493Vinit Deshpande if ((scanDetail.getSeen() + delay) < milli) { 179f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle iter.remove(); 180f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 181f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 182f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 183f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 184ef1567e413c9ed5f5c4fdb9e354861632f7b2f87Jan Nordqvist 185d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande void averageRssiAndRemoveFromCache(ScanResult result) { 186d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande // Fetch the previous instance for this result 18725ee2d5d30434712b28aef6eec9460035101e493Vinit Deshpande ScanDetail sd = scanResultCache.get(result.BSSID); 18825ee2d5d30434712b28aef6eec9460035101e493Vinit Deshpande if (sd != null) { 18925ee2d5d30434712b28aef6eec9460035101e493Vinit Deshpande ScanResult sr = sd.getScanResult(); 190d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande if (mWifiConfigStore.scanResultRssiLevelPatchUp != 0 191d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande && result.level == 0 192d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande && sr.level < -20) { 193d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande // A 'zero' RSSI reading is most likely a chip problem which returns 194d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande // an unknown RSSI, hence ignore it 195d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande result.level = sr.level; 196ef1567e413c9ed5f5c4fdb9e354861632f7b2f87Jan Nordqvist } 197ef1567e413c9ed5f5c4fdb9e354861632f7b2f87Jan Nordqvist 198d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande // If there was a previous cache result for this BSSID, average the RSSI values 199d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande result.averageRssi(sr.level, sr.seen, mScanResultMaximumAge); 200ef1567e413c9ed5f5c4fdb9e354861632f7b2f87Jan Nordqvist 201d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande // Remove the previous Scan Result - this is not necessary 202d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande scanResultCache.remove(result.BSSID); 203d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande } else if (mWifiConfigStore.scanResultRssiLevelPatchUp != 0 && result.level == 0) { 204d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande // A 'zero' RSSI reading is most likely a chip problem which returns 205d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande // an unknown RSSI, hence initialize it to a sane value 206d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande result.level = mWifiConfigStore.scanResultRssiLevelPatchUp; 207ef1567e413c9ed5f5c4fdb9e354861632f7b2f87Jan Nordqvist } 208ef1567e413c9ed5f5c4fdb9e354861632f7b2f87Jan Nordqvist } 209ef1567e413c9ed5f5c4fdb9e354861632f7b2f87Jan Nordqvist 210d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande void addToUnscoredNetworks(ScanResult result, List<NetworkKey> unknownScanResults) { 211d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande WifiKey wkey; 212d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande // Quoted SSIDs are the only one valid at this stage 213d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande try { 214d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande wkey = new WifiKey("\"" + result.SSID + "\"", result.BSSID); 215d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande } catch (IllegalArgumentException e) { 216d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande logDbg("AutoJoinController: received badly encoded SSID=[" + result.SSID + 217d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande "] ->skipping this network"); 218d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande wkey = null; 219d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande } 220d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande if (wkey != null) { 221d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande NetworkKey nkey = new NetworkKey(wkey); 222d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande //if we don't know this scan result then request a score from the scorer 223d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande unknownScanResults.add(nkey); 224ef1567e413c9ed5f5c4fdb9e354861632f7b2f87Jan Nordqvist } 225d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande if (VDBG) { 226d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande String cap = ""; 227d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande if (result.capabilities != null) 228d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande cap = result.capabilities; 229d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande logDbg(result.SSID + " " + result.BSSID + " rssi=" 230d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande + result.level + " cap " + cap + " is not scored"); 231ef1567e413c9ed5f5c4fdb9e354861632f7b2f87Jan Nordqvist } 232ef1567e413c9ed5f5c4fdb9e354861632f7b2f87Jan Nordqvist } 233ef1567e413c9ed5f5c4fdb9e354861632f7b2f87Jan Nordqvist 23477f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist int addToScanCache(List<ScanDetail> scanList) { 235be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle int numScanResultsKnown = 0; // Record number of scan results we knew about 236be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle WifiConfiguration associatedConfig = null; 2377b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle boolean didAssociate = false; 2388242cc81341c80ab5bc057ffdad99a3a1d95be5cvandwalle long now = System.currentTimeMillis(); 239f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 2400c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle ArrayList<NetworkKey> unknownScanResults = new ArrayList<NetworkKey>(); 2410c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle 242dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle for (ScanDetail scanDetail : scanList) { 24377f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist ScanResult result = scanDetail.getScanResult(); 2441fcf3c6d2b9ed65573e1e7c55fc5a30ebd364c4fYuhao Zheng if (result.SSID == null) continue; 245c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 246c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Make sure we record the last time we saw this result 24725ee2d5d30434712b28aef6eec9460035101e493Vinit Deshpande scanDetail.setSeen(); 248f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 249d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande averageRssiAndRemoveFromCache(result); 250e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle 251e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle if (!mNetworkScoreCache.isScoredNetwork(result)) { 252d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande addToUnscoredNetworks(result, unknownScanResults); 2530c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle } else { 254e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle if (VDBG) { 2557b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle String cap = ""; 2567b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle if (result.capabilities != null) 2577b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle cap = result.capabilities; 258e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle int score = mNetworkScoreCache.getNetworkScore(result); 259e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle logDbg(result.SSID + " " + result.BSSID + " rssi=" 2607b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle + result.level + " cap " + cap + " is scored : " + score); 2610c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle } 262f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 263f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 264e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // scanResultCache.put(result.BSSID, new ScanResult(result)); 26525ee2d5d30434712b28aef6eec9460035101e493Vinit Deshpande scanResultCache.put(result.BSSID, scanDetail); 266be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle // Add this BSSID to the scanResultCache of a Saved WifiConfiguration 267d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande didAssociate = mWifiConfigStore.updateSavedNetworkHistory(scanDetail); 268f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 269be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle // If not successful, try to associate this BSSID to an existing Saved WifiConfiguration 2707b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle if (!didAssociate) { 271be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle // We couldn't associate the scan result to a Saved WifiConfiguration 272c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Hence it is untrusted 273c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle result.untrusted = true; 2740d616ef3bf635dff8722e064c0be842676390ed8vandwalle } else { 2750d616ef3bf635dff8722e064c0be842676390ed8vandwalle // If the scan result has been blacklisted fir 18 hours -> unblacklist 2760d616ef3bf635dff8722e064c0be842676390ed8vandwalle if ((now - result.blackListTimestamp) > loseBlackListHardMilli) { 2770d616ef3bf635dff8722e064c0be842676390ed8vandwalle result.setAutoJoinStatus(ScanResult.ENABLED); 2780d616ef3bf635dff8722e064c0be842676390ed8vandwalle } 279f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 2807b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle if (didAssociate) { 281be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle numScanResultsKnown++; 282dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle result.isAutoJoinCandidate++; 283a0708b09ad17b086c008ab100aec7143d7613c80vandwalle } else { 284a0708b09ad17b086c008ab100aec7143d7613c80vandwalle result.isAutoJoinCandidate = 0; 285be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle } 286f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 2870c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle 2880c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle if (unknownScanResults.size() != 0) { 2890c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle NetworkKey[] newKeys = 2900c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle unknownScanResults.toArray(new NetworkKey[unknownScanResults.size()]); 291931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Kick the score manager, we will get updated scores asynchronously 2920c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle scoreManager.requestScores(newKeys); 2930c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle } 294be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle return numScanResultsKnown; 295f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 296f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 297f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void logDbg(String message) { 2980888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle logDbg(message, false); 299ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 300ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle 301ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle void logDbg(String message, boolean stackTrace) { 302ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (stackTrace) { 30333f9ad2442844df078dde3ae67961e7132a8a48dVinit Deshpande Log.d(TAG, message + " stack:" 304ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + Thread.currentThread().getStackTrace()[2].getMethodName() + " - " 305ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + Thread.currentThread().getStackTrace()[3].getMethodName() + " - " 306ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + Thread.currentThread().getStackTrace()[4].getMethodName() + " - " 307ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + Thread.currentThread().getStackTrace()[5].getMethodName()); 308ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } else { 30933f9ad2442844df078dde3ae67961e7132a8a48dVinit Deshpande Log.d(TAG, message); 310ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 311f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 312f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 313931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Called directly from WifiStateMachine 314be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle int newSupplicantResults(boolean doAutoJoin) { 315be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle int numScanResultsKnown; 31677f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist List<ScanDetail> scanList = mWifiStateMachine.getScanResultsListNoCopyUnsync(); 317be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle numScanResultsKnown = addToScanCache(scanList); 318f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ageScanResultsOut(mScanResultMaximumAge); 319be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle if (DBG) { 320be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle logDbg("newSupplicantResults size=" + Integer.valueOf(scanResultCache.size()) 321dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle + " known=" + numScanResultsKnown + " " 322dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle + doAutoJoin); 323be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle } 3247806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle if (doAutoJoin) { 3257806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle attemptAutoJoin(); 3267806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle } 327005c1ef113192f898499a407dd266393a8d6b076vandwalle mWifiConfigStore.writeKnownNetworkHistory(false); 328be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle return numScanResultsKnown; 329f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 330f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 331f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 332931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 333931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * Not used at the moment 334f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * should be a call back from WifiScanner HAL ?? 335f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * this function is not hooked and working yet, it will receive scan results from WifiScanners 336f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * with the list of IEs,then populate the capabilities by parsing the IEs and inject the scan 337f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * results as normal. 338f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle */ 339f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void newHalScanResults() { 34077f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist List<ScanDetail> scanList = null;//mWifiScanner.syncGetScanResultsList(); 341f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle String akm = WifiParser.parse_akm(null, null); 342f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg(akm); 343f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle addToScanCache(scanList); 344f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ageScanResultsOut(0); 345f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle attemptAutoJoin(); 346005c1ef113192f898499a407dd266393a8d6b076vandwalle mWifiConfigStore.writeKnownNetworkHistory(false); 347f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 348f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 349931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 350dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * network link quality changed, called directly from WifiTrafficPoller, 351931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * or by listening to Link Quality intent 352931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 353f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void linkQualitySignificantChange() { 354f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle attemptAutoJoin(); 355f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 356f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 357931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 358f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * compare a WifiConfiguration against the current network, return a delta score 359f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * If not associated, and the candidate will always be better 360f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * For instance if the candidate is a home network versus an unknown public wifi, 361f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * the delta will be infinite, else compare Kepler scores etc… 362b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle * Negatve return values from this functions are meaningless per se, just trying to 363b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle * keep them distinct for debug purpose (i.e. -1, -2 etc...) 364931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 365e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle private int compareNetwork(WifiConfiguration candidate, 366e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle String lastSelectedConfiguration) { 367b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (candidate == null) 368b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle return -3; 369b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle 370f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration currentNetwork = mWifiStateMachine.getCurrentWifiConfiguration(); 371b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle if (currentNetwork == null) { 372c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // Return any absurdly high score, if we are not connected there is no current 373c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // network to... 374dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle return 1000; 375b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle } 376f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 377f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (candidate.configKey(true).equals(currentNetwork.configKey(true))) { 378b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle return -2; 379f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 380f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 381b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle if (DBG) { 382e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle logDbg("compareNetwork will compare " + candidate.configKey() 383e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " with current " + currentNetwork.configKey()); 384b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle } 385833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle int order = compareWifiConfigurations(currentNetwork, candidate); 386e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle 387e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // The lastSelectedConfiguration is the configuration the user has manually selected 388e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // thru WifiPicker, or that a 3rd party app asked us to connect to via the 389e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // enableNetwork with disableOthers=true WifiManager API 390e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // As this is a direct user choice, we strongly prefer this configuration, 391e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // hence give +/-100 392e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle if ((lastSelectedConfiguration != null) 393e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle && currentNetwork.configKey().equals(lastSelectedConfiguration)) { 394e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // currentNetwork is the last selected configuration, 395e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // so keep it above connect choices (+/-60) and 396e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // above RSSI/scorer based selection of linked configuration (+/- 50) 397e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // by reducing order by -100 398e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle order = order - 100; 399dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle if (VDBG) { 400e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle logDbg(" ...and prefers -100 " + currentNetwork.configKey() 401e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " over " + candidate.configKey() 402e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " because it is the last selected -> " 403e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + Integer.toString(order)); 404e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle } 405e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle } else if ((lastSelectedConfiguration != null) 406e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle && candidate.configKey().equals(lastSelectedConfiguration)) { 407e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // candidate is the last selected configuration, 408e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // so keep it above connect choices (+/-60) and 409e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // above RSSI/scorer based selection of linked configuration (+/- 50) 410e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // by increasing order by +100 411e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle order = order + 100; 412dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle if (VDBG) { 413e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle logDbg(" ...and prefers +100 " + candidate.configKey() 414e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " over " + currentNetwork.configKey() 415e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " because it is the last selected -> " 416e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + Integer.toString(order)); 417e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle } 418e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle } 419e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle 420ede507649471f1113e9e1919812115ca5a6bc0c8vandwalle return order; 421f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 422f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 423ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle /** 424ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * update the network history fields fo that configuration 425ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * - if userTriggered, we mark the configuration as "non selfAdded" since the user has seen it 426ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * and took over management 427ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * - if it is a "connect", remember which network were there at the point of the connect, so 428ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * as those networks get a relative lower score than the selected configuration 42962f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle * 430ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * @param netId 431ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * @param userTriggered : if the update come from WiFiManager 432dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * @param connect : if the update includes a connect 433931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 43462f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle public void updateConfigurationHistory(int netId, boolean userTriggered, boolean connect) { 435f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration selected = mWifiConfigStore.getWifiConfiguration(netId); 436f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (selected == null) { 437c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle logDbg("updateConfigurationHistory nid=" + netId + " no selected configuration!"); 438f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return; 439f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 440f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 441e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle if (selected.SSID == null) { 442c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle logDbg("updateConfigurationHistory nid=" + netId + 443c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle " no SSID in selected configuration!"); 444e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle return; 445e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle } 446e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle 44762f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (userTriggered) { 448931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Reenable autojoin for this network, 44962f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle // since the user want to connect to this configuration 45027355a942653264388e909a4276196ee63e57811vandwalle selected.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 45162f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle selected.selfAdded = false; 452e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle selected.dirty = true; 45362f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 454f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 455992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle if (DBG && userTriggered) { 456f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (selected.connectChoices != null) { 457ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory will update " 458f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(netId) + " now: " 459992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle + Integer.toString(selected.connectChoices.size()) 460992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle + " uid=" + Integer.toString(selected.creatorUid), true); 461f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 462ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory will update " 463992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle + Integer.toString(netId) 464992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle + " uid=" + Integer.toString(selected.creatorUid), true); 465f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 466f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 467f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 468ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (connect && userTriggered) { 469ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle boolean found = false; 4702451dbcc4f9641df188326215b204b798eb70c46vandwalle int choice = 0; 471c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle int size = 0; 4729f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle 4739f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle // Reset the triggered disabled count, because user wanted to connect to this 4749f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle // configuration, and we were not. 4759f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle selected.numUserTriggeredWifiDisableLowRSSI = 0; 4769f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle selected.numUserTriggeredWifiDisableBadRSSI = 0; 4779f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle selected.numUserTriggeredWifiDisableNotHighRSSI = 0; 4789f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle selected.numUserTriggeredJoinAttempts++; 4799f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle 48062f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle List<WifiConfiguration> networks = 48162f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle mWifiConfigStore.getRecentConfiguredNetworks(12000, false); 482c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (networks != null) size = networks.size(); 483c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle logDbg("updateConfigurationHistory found " + size + " networks"); 48462f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (networks != null) { 48562f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle for (WifiConfiguration config : networks) { 486992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle if (DBG) { 487992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle logDbg("updateConfigurationHistory got " + config.SSID + " nid=" 488992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle + Integer.toString(config.networkId)); 489992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle } 490f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 49162f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (selected.configKey(true).equals(config.configKey(true))) { 492ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle found = true; 49362f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle continue; 49462f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 495f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 49687df79e235c64f7062d0c50658fe1999b1225435Pierre Vandwalle // If the selection was made while config was visible with reasonably good RSSI 49787df79e235c64f7062d0c50658fe1999b1225435Pierre Vandwalle // then register the user preference, else ignore 49887df79e235c64f7062d0c50658fe1999b1225435Pierre Vandwalle if (config.visibility == null || 49987df79e235c64f7062d0c50658fe1999b1225435Pierre Vandwalle (config.visibility.rssi24 < mWifiConfigStore.thresholdBadRssi24.get() 50087df79e235c64f7062d0c50658fe1999b1225435Pierre Vandwalle && config.visibility.rssi5 < mWifiConfigStore.thresholdBadRssi5.get()) 50187df79e235c64f7062d0c50658fe1999b1225435Pierre Vandwalle ) { 50287df79e235c64f7062d0c50658fe1999b1225435Pierre Vandwalle continue; 50362f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 504f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 50587df79e235c64f7062d0c50658fe1999b1225435Pierre Vandwalle choice = MAX_RSSI_DELTA + 10; // Make sure the choice overrides the RSSI diff 50687df79e235c64f7062d0c50658fe1999b1225435Pierre Vandwalle 507931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // The selected configuration was preferred over a recently seen config 508931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // hence remember the user's choice: 509931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // add the recently seen config to the selected's connectChoices array 510ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle 511ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (selected.connectChoices == null) { 512ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle selected.connectChoices = new HashMap<String, Integer>(); 513ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 514ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle 515ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory add a choice " + selected.configKey(true) 5160888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle + " over " + config.configKey(true) 5172451dbcc4f9641df188326215b204b798eb70c46vandwalle + " choice " + Integer.toString(choice)); 518cf5b8eb8a08c45bd4a82f1f4bb789c8a1b08744fvandwalle 5192f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // Add the visible config to the selected's connect choice list 5202f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle selected.connectChoices.put(config.configKey(true), choice); 521f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 52262f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (config.connectChoices != null) { 523ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (VDBG) { 524ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory will remove " 52562f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle + selected.configKey(true) + " from " + config.configKey(true)); 526ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 527931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Remove the selected from the recently seen config's connectChoice list 52862f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle config.connectChoices.remove(selected.configKey(true)); 5290888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle 5300888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle if (selected.linkedConfigurations != null) { 531dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle // Remove the selected's linked configuration from the 532dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle // recently seen config's connectChoice list 533dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle for (String key : selected.linkedConfigurations.keySet()) { 534dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle config.connectChoices.remove(key); 535dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle } 5360888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle } 53762f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 538ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 539ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (found == false) { 540dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle // We haven't found the configuration that the user just selected in our 541dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle // scan cache. 542dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle // In that case we will need a new scan before attempting to connect to this 543dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle // configuration anyhow and thus we can process the scan results then. 544dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle logDbg("updateConfigurationHistory try to connect to an old network!! : " 545dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle + selected.configKey()); 54662f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 547f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 54862f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (selected.connectChoices != null) { 54962f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (VDBG) 550ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory " + Integer.toString(netId) 55162f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle + " now: " + Integer.toString(selected.connectChoices.size())); 55262f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 553f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 554f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 555992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle 556931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // TODO: write only if something changed 557992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle if (userTriggered || connect) { 558005c1ef113192f898499a407dd266393a8d6b076vandwalle mWifiConfigStore.writeKnownNetworkHistory(false); 559992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle } 560f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 561f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 5622451dbcc4f9641df188326215b204b798eb70c46vandwalle int getConnectChoice(WifiConfiguration source, WifiConfiguration target) { 5632451dbcc4f9641df188326215b204b798eb70c46vandwalle Integer choice = null; 5642451dbcc4f9641df188326215b204b798eb70c46vandwalle if (source == null || target == null) { 5652451dbcc4f9641df188326215b204b798eb70c46vandwalle return 0; 566f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 567f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 5682451dbcc4f9641df188326215b204b798eb70c46vandwalle if (source.connectChoices != null 5692451dbcc4f9641df188326215b204b798eb70c46vandwalle && source.connectChoices.containsKey(target.configKey(true))) { 5702451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = source.connectChoices.get(target.configKey(true)); 5712451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if (source.linkedConfigurations != null) { 572f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for (String key : source.linkedConfigurations.keySet()) { 573f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(key); 574f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config != null) { 575f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config.connectChoices != null) { 5762451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = config.connectChoices.get(target.configKey(true)); 577f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 578f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 579f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 5802451dbcc4f9641df188326215b204b798eb70c46vandwalle } 5812451dbcc4f9641df188326215b204b798eb70c46vandwalle 5822451dbcc4f9641df188326215b204b798eb70c46vandwalle if (choice == null) { 58333f9ad2442844df078dde3ae67961e7132a8a48dVinit Deshpande // We didn't find the connect choice; fallback to some default choices 58433f9ad2442844df078dde3ae67961e7132a8a48dVinit Deshpande int sourceScore = getSecurityScore(source); 58533f9ad2442844df078dde3ae67961e7132a8a48dVinit Deshpande int targetScore = getSecurityScore(target); 5868eefaf2c281b44fb7a4d951ba587f447800c4b4fVinit Deshpande choice = sourceScore - targetScore; 58733f9ad2442844df078dde3ae67961e7132a8a48dVinit Deshpande } 58833f9ad2442844df078dde3ae67961e7132a8a48dVinit Deshpande 58933f9ad2442844df078dde3ae67961e7132a8a48dVinit Deshpande if (choice < 0) { 59033f9ad2442844df078dde3ae67961e7132a8a48dVinit Deshpande choice = 20; // Compatibility with older files 5912451dbcc4f9641df188326215b204b798eb70c46vandwalle } 59233f9ad2442844df078dde3ae67961e7132a8a48dVinit Deshpande 59333f9ad2442844df078dde3ae67961e7132a8a48dVinit Deshpande return choice; 5942451dbcc4f9641df188326215b204b798eb70c46vandwalle } 5952451dbcc4f9641df188326215b204b798eb70c46vandwalle 59633f9ad2442844df078dde3ae67961e7132a8a48dVinit Deshpande int compareWifiConfigurationsFromVisibility(WifiConfiguration.Visibility a, int aRssiBoost, 597dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle String dbgA, WifiConfiguration.Visibility b, int bRssiBoost, String dbgB) { 5982451dbcc4f9641df188326215b204b798eb70c46vandwalle 599815788ba7838fc54310baed3deb9b95548e0ce69vandwalle int aRssiBoost5 = 0; // 5GHz RSSI boost to apply for purpose band selection (5GHz pref) 600815788ba7838fc54310baed3deb9b95548e0ce69vandwalle int bRssiBoost5 = 0; // 5GHz RSSI boost to apply for purpose band selection (5GHz pref) 601815788ba7838fc54310baed3deb9b95548e0ce69vandwalle 602815788ba7838fc54310baed3deb9b95548e0ce69vandwalle int aScore = 0; 603815788ba7838fc54310baed3deb9b95548e0ce69vandwalle int bScore = 0; 604815788ba7838fc54310baed3deb9b95548e0ce69vandwalle 605815788ba7838fc54310baed3deb9b95548e0ce69vandwalle boolean aPrefers5GHz = false; 606815788ba7838fc54310baed3deb9b95548e0ce69vandwalle boolean bPrefers5GHz = false; 6074dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 6082451dbcc4f9641df188326215b204b798eb70c46vandwalle /** 609815788ba7838fc54310baed3deb9b95548e0ce69vandwalle * Calculate a boost to apply to RSSI value of configuration we want to join on 5GHz: 610815788ba7838fc54310baed3deb9b95548e0ce69vandwalle * Boost RSSI value of 5GHz bands iff the base value is better than threshold, 611815788ba7838fc54310baed3deb9b95548e0ce69vandwalle * penalize the RSSI value of 5GHz band iff the base value is lower than threshold 6122451dbcc4f9641df188326215b204b798eb70c46vandwalle * This implements band preference where we prefer 5GHz if RSSI5 is good enough, whereas 6132451dbcc4f9641df188326215b204b798eb70c46vandwalle * we prefer 2.4GHz otherwise. 6142451dbcc4f9641df188326215b204b798eb70c46vandwalle */ 61533f9ad2442844df078dde3ae67961e7132a8a48dVinit Deshpande aRssiBoost5 = rssiBoostFrom5GHzRssi(a.rssi5, dbgA + "->"); 61633f9ad2442844df078dde3ae67961e7132a8a48dVinit Deshpande bRssiBoost5 = rssiBoostFrom5GHzRssi(b.rssi5, dbgB + "->"); 6172451dbcc4f9641df188326215b204b798eb70c46vandwalle 618815788ba7838fc54310baed3deb9b95548e0ce69vandwalle // Select which band to use for a 61933f9ad2442844df078dde3ae67961e7132a8a48dVinit Deshpande if (a.rssi5 + aRssiBoost5 > a.rssi24) { 6202451dbcc4f9641df188326215b204b798eb70c46vandwalle // Prefer a's 5GHz 621815788ba7838fc54310baed3deb9b95548e0ce69vandwalle aPrefers5GHz = true; 622815788ba7838fc54310baed3deb9b95548e0ce69vandwalle } 623815788ba7838fc54310baed3deb9b95548e0ce69vandwalle 624815788ba7838fc54310baed3deb9b95548e0ce69vandwalle // Select which band to use for b 62533f9ad2442844df078dde3ae67961e7132a8a48dVinit Deshpande if (b.rssi5 + bRssiBoost5 > b.rssi24) { 626815788ba7838fc54310baed3deb9b95548e0ce69vandwalle // Prefer b's 5GHz 627815788ba7838fc54310baed3deb9b95548e0ce69vandwalle bPrefers5GHz = true; 628815788ba7838fc54310baed3deb9b95548e0ce69vandwalle } 629815788ba7838fc54310baed3deb9b95548e0ce69vandwalle 630815788ba7838fc54310baed3deb9b95548e0ce69vandwalle if (aPrefers5GHz) { 631815788ba7838fc54310baed3deb9b95548e0ce69vandwalle if (bPrefers5GHz) { 632815788ba7838fc54310baed3deb9b95548e0ce69vandwalle // If both a and b are on 5GHz then we don't apply the 5GHz RSSI boost to either 633815788ba7838fc54310baed3deb9b95548e0ce69vandwalle // one, but directly compare the RSSI values, this improves stability, 634815788ba7838fc54310baed3deb9b95548e0ce69vandwalle // since the 5GHz RSSI boost can introduce large fluctuations 63533f9ad2442844df078dde3ae67961e7132a8a48dVinit Deshpande aScore = a.rssi5 + aRssiBoost; 636815788ba7838fc54310baed3deb9b95548e0ce69vandwalle } else { 637815788ba7838fc54310baed3deb9b95548e0ce69vandwalle // If only a is on 5GHz, then apply the 5GHz preference boost to a 63833f9ad2442844df078dde3ae67961e7132a8a48dVinit Deshpande aScore = a.rssi5 + aRssiBoost + aRssiBoost5; 639815788ba7838fc54310baed3deb9b95548e0ce69vandwalle } 6402451dbcc4f9641df188326215b204b798eb70c46vandwalle } else { 64133f9ad2442844df078dde3ae67961e7132a8a48dVinit Deshpande aScore = a.rssi24 + aRssiBoost; 642f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 6432451dbcc4f9641df188326215b204b798eb70c46vandwalle 644815788ba7838fc54310baed3deb9b95548e0ce69vandwalle if (bPrefers5GHz) { 645815788ba7838fc54310baed3deb9b95548e0ce69vandwalle if (aPrefers5GHz) { 646815788ba7838fc54310baed3deb9b95548e0ce69vandwalle // If both a and b are on 5GHz then we don't apply the 5GHz RSSI boost to either 647815788ba7838fc54310baed3deb9b95548e0ce69vandwalle // one, but directly compare the RSSI values, this improves stability, 648815788ba7838fc54310baed3deb9b95548e0ce69vandwalle // since the 5GHz RSSI boost can introduce large fluctuations 64933f9ad2442844df078dde3ae67961e7132a8a48dVinit Deshpande bScore = b.rssi5 + bRssiBoost; 650815788ba7838fc54310baed3deb9b95548e0ce69vandwalle } else { 651815788ba7838fc54310baed3deb9b95548e0ce69vandwalle // If only b is on 5GHz, then apply the 5GHz preference boost to b 65233f9ad2442844df078dde3ae67961e7132a8a48dVinit Deshpande bScore = b.rssi5 + bRssiBoost + bRssiBoost5; 653815788ba7838fc54310baed3deb9b95548e0ce69vandwalle } 654815788ba7838fc54310baed3deb9b95548e0ce69vandwalle } else { 65533f9ad2442844df078dde3ae67961e7132a8a48dVinit Deshpande bScore = b.rssi24 + bRssiBoost; 656815788ba7838fc54310baed3deb9b95548e0ce69vandwalle } 65733f9ad2442844df078dde3ae67961e7132a8a48dVinit Deshpande 658815788ba7838fc54310baed3deb9b95548e0ce69vandwalle if (VDBG) { 65933f9ad2442844df078dde3ae67961e7132a8a48dVinit Deshpande logDbg(" " + dbgA + " is5=" + aPrefers5GHz + " score=" + aScore 66033f9ad2442844df078dde3ae67961e7132a8a48dVinit Deshpande + " " + dbgB + " is5=" + bPrefers5GHz + " score=" + bScore); 661815788ba7838fc54310baed3deb9b95548e0ce69vandwalle } 662f57f8918b8c5872ff4bb141fa9e407bec8442e8dvandwalle 663f57f8918b8c5872ff4bb141fa9e407bec8442e8dvandwalle // Debug only, record RSSI comparison parameters 66433f9ad2442844df078dde3ae67961e7132a8a48dVinit Deshpande if (a != null) { 66533f9ad2442844df078dde3ae67961e7132a8a48dVinit Deshpande a.score = aScore; 66633f9ad2442844df078dde3ae67961e7132a8a48dVinit Deshpande a.currentNetworkBoost = aRssiBoost; 66733f9ad2442844df078dde3ae67961e7132a8a48dVinit Deshpande a.bandPreferenceBoost = aRssiBoost5; 668f57f8918b8c5872ff4bb141fa9e407bec8442e8dvandwalle } 66933f9ad2442844df078dde3ae67961e7132a8a48dVinit Deshpande if (b != null) { 67033f9ad2442844df078dde3ae67961e7132a8a48dVinit Deshpande b.score = bScore; 67133f9ad2442844df078dde3ae67961e7132a8a48dVinit Deshpande b.currentNetworkBoost = bRssiBoost; 67233f9ad2442844df078dde3ae67961e7132a8a48dVinit Deshpande b.bandPreferenceBoost = bRssiBoost5; 673f57f8918b8c5872ff4bb141fa9e407bec8442e8dvandwalle } 674f57f8918b8c5872ff4bb141fa9e407bec8442e8dvandwalle 675815788ba7838fc54310baed3deb9b95548e0ce69vandwalle // Compare a and b 676815788ba7838fc54310baed3deb9b95548e0ce69vandwalle // If a score is higher then a > b and the order is descending (negative) 677815788ba7838fc54310baed3deb9b95548e0ce69vandwalle // If b score is higher then a < b and the order is ascending (positive) 678815788ba7838fc54310baed3deb9b95548e0ce69vandwalle return bScore - aScore; 679f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 680f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 6812451dbcc4f9641df188326215b204b798eb70c46vandwalle // Compare WifiConfiguration by RSSI, and return a comparison value in the range [-50, +50] 6822451dbcc4f9641df188326215b204b798eb70c46vandwalle // The result represents "approximately" an RSSI difference measured in dBM 6832451dbcc4f9641df188326215b204b798eb70c46vandwalle // Adjusted with various parameters: 6842451dbcc4f9641df188326215b204b798eb70c46vandwalle // +) current network gets a +15 boost 6852451dbcc4f9641df188326215b204b798eb70c46vandwalle // +) 5GHz signal, if they are strong enough, get a +15 or +25 boost, representing the 6862451dbcc4f9641df188326215b204b798eb70c46vandwalle // fact that at short range we prefer 5GHz band as it is cleaner of interference and 6872451dbcc4f9641df188326215b204b798eb70c46vandwalle // provides for wider channels 6882451dbcc4f9641df188326215b204b798eb70c46vandwalle int compareWifiConfigurationsRSSI(WifiConfiguration a, WifiConfiguration b, 6892451dbcc4f9641df188326215b204b798eb70c46vandwalle String currentConfiguration) { 690f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int order = 0; 6912451dbcc4f9641df188326215b204b798eb70c46vandwalle 6922451dbcc4f9641df188326215b204b798eb70c46vandwalle // Boost used so as to favor current config 6932451dbcc4f9641df188326215b204b798eb70c46vandwalle int aRssiBoost = 0; 6942451dbcc4f9641df188326215b204b798eb70c46vandwalle int bRssiBoost = 0; 6952451dbcc4f9641df188326215b204b798eb70c46vandwalle 6962451dbcc4f9641df188326215b204b798eb70c46vandwalle // Retrieve the visibility 697f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration.Visibility astatus = a.visibility; 698f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration.Visibility bstatus = b.visibility; 699f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (astatus == null || bstatus == null) { 7002451dbcc4f9641df188326215b204b798eb70c46vandwalle // Error visibility wasn't set 701b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations NULL band status!"); 702f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return 0; 703f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 7042451dbcc4f9641df188326215b204b798eb70c46vandwalle 7052451dbcc4f9641df188326215b204b798eb70c46vandwalle // Apply Hysteresis, boost RSSI of current configuration 7062451dbcc4f9641df188326215b204b798eb70c46vandwalle if (null != currentConfiguration) { 7072451dbcc4f9641df188326215b204b798eb70c46vandwalle if (a.configKey().equals(currentConfiguration)) { 70893a1fddee50a244d31036cddae6b7db6630fd93dvandwalle aRssiBoost = mWifiConfigStore.currentNetworkBoost; 7092451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if (b.configKey().equals(currentConfiguration)) { 71093a1fddee50a244d31036cddae6b7db6630fd93dvandwalle bRssiBoost = mWifiConfigStore.currentNetworkBoost; 7112451dbcc4f9641df188326215b204b798eb70c46vandwalle } 7122451dbcc4f9641df188326215b204b798eb70c46vandwalle } 7132451dbcc4f9641df188326215b204b798eb70c46vandwalle 714dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle if (VDBG) { 715b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurationsRSSI: " + a.configKey() 716dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle + " rssi=" + Integer.toString(astatus.rssi24) 717dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle + "," + Integer.toString(astatus.rssi5) 718dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle + " boost=" + Integer.toString(aRssiBoost) 719dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle + " " + b.configKey() + " rssi=" 720dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle + Integer.toString(bstatus.rssi24) + "," 721dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle + Integer.toString(bstatus.rssi5) 722dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle + " boost=" + Integer.toString(bRssiBoost) 7232451dbcc4f9641df188326215b204b798eb70c46vandwalle ); 724f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 7252451dbcc4f9641df188326215b204b798eb70c46vandwalle 72633f9ad2442844df078dde3ae67961e7132a8a48dVinit Deshpande order = compareWifiConfigurationsFromVisibility( 72733f9ad2442844df078dde3ae67961e7132a8a48dVinit Deshpande a.visibility, aRssiBoost, a.configKey(), 72833f9ad2442844df078dde3ae67961e7132a8a48dVinit Deshpande b.visibility, bRssiBoost, b.configKey()); 7292451dbcc4f9641df188326215b204b798eb70c46vandwalle 73087df79e235c64f7062d0c50658fe1999b1225435Pierre Vandwalle // Normalize the order to [-50, +50] = [ -MAX_RSSI_DELTA, MAX_RSSI_DELTA] 73187df79e235c64f7062d0c50658fe1999b1225435Pierre Vandwalle if (order > MAX_RSSI_DELTA) order = MAX_RSSI_DELTA; 73287df79e235c64f7062d0c50658fe1999b1225435Pierre Vandwalle else if (order < -MAX_RSSI_DELTA) order = -MAX_RSSI_DELTA; 7332451dbcc4f9641df188326215b204b798eb70c46vandwalle 7342451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 7352451dbcc4f9641df188326215b204b798eb70c46vandwalle String prefer = " = "; 7362451dbcc4f9641df188326215b204b798eb70c46vandwalle if (order > 0) { 7372451dbcc4f9641df188326215b204b798eb70c46vandwalle prefer = " < "; // Ascending 7382451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if (order < 0) { 7392451dbcc4f9641df188326215b204b798eb70c46vandwalle prefer = " > "; // Descending 7402451dbcc4f9641df188326215b204b798eb70c46vandwalle } 741b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurationsRSSI " + a.configKey() 7422451dbcc4f9641df188326215b204b798eb70c46vandwalle + " rssi=(" + a.visibility.rssi24 7432451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + a.visibility.rssi5 7442451dbcc4f9641df188326215b204b798eb70c46vandwalle + ") num=(" + a.visibility.num24 7452451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + a.visibility.num5 + ")" 7462451dbcc4f9641df188326215b204b798eb70c46vandwalle + prefer + b.configKey() 7472451dbcc4f9641df188326215b204b798eb70c46vandwalle + " rssi=(" + b.visibility.rssi24 7482451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + b.visibility.rssi5 7492451dbcc4f9641df188326215b204b798eb70c46vandwalle + ") num=(" + b.visibility.num24 7502451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + b.visibility.num5 + ")" 7512451dbcc4f9641df188326215b204b798eb70c46vandwalle + " -> " + order); 7522451dbcc4f9641df188326215b204b798eb70c46vandwalle } 7532451dbcc4f9641df188326215b204b798eb70c46vandwalle 754f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return order; 755f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 756f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 757833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle /** 758833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle * b/18490330 only use scorer for untrusted networks 759dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * <p/> 760dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * int compareWifiConfigurationsWithScorer(WifiConfiguration a, WifiConfiguration b) { 761dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * <p/> 762dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * boolean aIsActive = false; 763dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * boolean bIsActive = false; 764dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * <p/> 765dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * // Apply Hysteresis : boost RSSI of current configuration before 766dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * // looking up the score 767dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * if (null != mCurrentConfigurationKey) { 768dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * if (a.configKey().equals(mCurrentConfigurationKey)) { 769dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * aIsActive = true; 770dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * } else if (b.configKey().equals(mCurrentConfigurationKey)) { 771dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * bIsActive = true; 772dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * } 773dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * } 774dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * int scoreA = getConfigNetworkScore(a, mScanResultAutoJoinAge, aIsActive); 775dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * int scoreB = getConfigNetworkScore(b, mScanResultAutoJoinAge, bIsActive); 776dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * <p/> 777dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * // Both configurations need to have a score for the scorer to be used 778dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * // ...and the scores need to be different:-) 779dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * if (scoreA == WifiNetworkScoreCache.INVALID_NETWORK_SCORE 780dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * || scoreB == WifiNetworkScoreCache.INVALID_NETWORK_SCORE) { 781dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * if (VDBG) { 782dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * logDbg(" compareWifiConfigurationsWithScorer no-scores: " 783dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * + a.configKey() 784dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * + " " 785dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * + b.configKey()); 786dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * } 787dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * return 0; 788dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * } 789dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * <p/> 790dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * if (VDBG) { 791dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * String prefer = " = "; 792dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * if (scoreA < scoreB) { 793dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * prefer = " < "; 794dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * } if (scoreA > scoreB) { 795dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * prefer = " > "; 796dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * } 797dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * logDbg(" compareWifiConfigurationsWithScorer " + a.configKey() 798dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * + " rssi=(" + a.visibility.rssi24 799dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * + "," + a.visibility.rssi5 800dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * + ") num=(" + a.visibility.num24 801dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * + "," + a.visibility.num5 + ")" 802dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * + " sc=" + scoreA 803dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * + prefer + b.configKey() 804dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * + " rssi=(" + b.visibility.rssi24 805dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * + "," + b.visibility.rssi5 806dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * + ") num=(" + b.visibility.num24 807dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * + "," + b.visibility.num5 + ")" 808dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * + " sc=" + scoreB 809dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * + " -> " + Integer.toString(scoreB - scoreA)); 810dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * } 811dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * <p/> 812dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * // If scoreA > scoreB, the comparison is descending hence the return value is negative 813dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * return scoreB - scoreA; 814dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * } 815833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle */ 8162451dbcc4f9641df188326215b204b798eb70c46vandwalle 817d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande int getSecurityScore(WifiConfiguration config) { 818d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande 819d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande if (TextUtils.isEmpty(config.SSID) == false) { 820d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande if (config.allowedKeyManagement.get(KeyMgmt.WPA_EAP) 821d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande || config.allowedKeyManagement.get(KeyMgmt.WPA_PSK) 822d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande || config.allowedKeyManagement.get(KeyMgmt.WPA2_PSK)) { 823d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande /* enterprise or PSK networks get highest score */ 824d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande return 100; 825d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande } else if (config.allowedKeyManagement.get(KeyMgmt.NONE)) { 826d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande /* open networks have lowest score */ 827d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande return 33; 828d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande } 829d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande } else if (TextUtils.isEmpty(config.FQDN) == false) { 830d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande /* passpoint networks have medium preference */ 831d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande return 66; 832d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande } 833d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande 834d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande /* bad network */ 835d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande return 0; 836d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande } 837d3fb9cbb12d013dd70e672ace5c41ab18a3679a0Vinit Deshpande 838f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int compareWifiConfigurations(WifiConfiguration a, WifiConfiguration b) { 839f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int order = 0; 840f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle boolean linked = false; 841f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 842453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle if ((a.linkedConfigurations != null) && (b.linkedConfigurations != null) 843453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle && (a.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED) 844453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle && (b.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED)) { 8452451dbcc4f9641df188326215b204b798eb70c46vandwalle if ((a.linkedConfigurations.get(b.configKey(true)) != null) 8462451dbcc4f9641df188326215b204b798eb70c46vandwalle && (b.linkedConfigurations.get(a.configKey(true)) != null)) { 847f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle linked = true; 848f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 849f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 850f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 851f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (a.ephemeral && b.ephemeral == false) { 852f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 853b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations ephemeral and prefers " + b.configKey() 854453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + " over " + a.configKey()); 855f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 856931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle return 1; // b is of higher priority - ascending 857f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 858f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (b.ephemeral && a.ephemeral == false) { 859f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 860b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations ephemeral and prefers " + a.configKey() 861453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + " over " + b.configKey()); 862f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 863931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle return -1; // a is of higher priority - descending 864f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 865f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 8662451dbcc4f9641df188326215b204b798eb70c46vandwalle // Apply RSSI, in the range [-5, +5] 8672451dbcc4f9641df188326215b204b798eb70c46vandwalle // after band adjustment, +n difference roughly corresponds to +10xn dBm 8682451dbcc4f9641df188326215b204b798eb70c46vandwalle order = order + compareWifiConfigurationsRSSI(a, b, mCurrentConfigurationKey); 869f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 8702451dbcc4f9641df188326215b204b798eb70c46vandwalle // If the configurations are not linked, compare by user's choice, only a 8712451dbcc4f9641df188326215b204b798eb70c46vandwalle // very high RSSI difference can then override the choice 8722451dbcc4f9641df188326215b204b798eb70c46vandwalle if (!linked) { 8732451dbcc4f9641df188326215b204b798eb70c46vandwalle int choice; 874f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 8752451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = getConnectChoice(a, b); 8762451dbcc4f9641df188326215b204b798eb70c46vandwalle if (choice > 0) { 877931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // a is of higher priority - descending 8782451dbcc4f9641df188326215b204b798eb70c46vandwalle order = order - choice; 879f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 880b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations prefers " + a.configKey() 881453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + " over " + b.configKey() 882b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " due to user choice of " + choice 883b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " order -> " + Integer.toString(order)); 884f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 885f57f8918b8c5872ff4bb141fa9e407bec8442e8dvandwalle if (a.visibility != null) { 886f57f8918b8c5872ff4bb141fa9e407bec8442e8dvandwalle a.visibility.lastChoiceBoost = choice; 887f57f8918b8c5872ff4bb141fa9e407bec8442e8dvandwalle a.visibility.lastChoiceConfig = b.configKey(); 888f57f8918b8c5872ff4bb141fa9e407bec8442e8dvandwalle } 8892451dbcc4f9641df188326215b204b798eb70c46vandwalle } 8902451dbcc4f9641df188326215b204b798eb70c46vandwalle 8912451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = getConnectChoice(b, a); 8922451dbcc4f9641df188326215b204b798eb70c46vandwalle if (choice > 0) { 893931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // a is of lower priority - ascending 8942451dbcc4f9641df188326215b204b798eb70c46vandwalle order = order + choice; 8954dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle if (VDBG) { 896b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations prefers " + b.configKey() + " over " 897b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + a.configKey() + " due to user choice of " + choice 898b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " order ->" + Integer.toString(order)); 899f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 900f57f8918b8c5872ff4bb141fa9e407bec8442e8dvandwalle if (b.visibility != null) { 901f57f8918b8c5872ff4bb141fa9e407bec8442e8dvandwalle b.visibility.lastChoiceBoost = choice; 902f57f8918b8c5872ff4bb141fa9e407bec8442e8dvandwalle b.visibility.lastChoiceConfig = a.configKey(); 903f57f8918b8c5872ff4bb141fa9e407bec8442e8dvandwalle } 904f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 905f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 906ede1310be531a84faa08f02c3fd243448dd936ddvandwalle 907f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (order == 0) { 908931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // We don't know anything - pick the last seen i.e. K behavior 909931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // we should do this only for recently picked configurations 910f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (a.priority > b.priority) { 911931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // a is of higher priority - descending 9122451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 913b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations prefers -1 " + a.configKey() + " over " 914453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + b.configKey() + " due to priority"); 915f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 916f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 917f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle order = -1; 918f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else if (a.priority < b.priority) { 919931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // a is of lower priority - ascending 9202451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 921b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations prefers +1 " + b.configKey() + " over " 922453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + a.configKey() + " due to priority"); 923f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 9242451dbcc4f9641df188326215b204b798eb70c46vandwalle order = 1; 925f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 926f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 927f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 928f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle String sorder = " == "; 929931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle if (order > 0) { 930f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle sorder = " < "; 931931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle } else if (order < 0) { 932f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle sorder = " > "; 933931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle } 934f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 9352451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 936b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg("compareWifiConfigurations: " + a.configKey() + sorder 937453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + b.configKey() + " order " + Integer.toString(order)); 938f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 939f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 940f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return order; 941f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 942f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 943c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle boolean isBadCandidate(int rssi5, int rssi24) { 944c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle return (rssi5 < -80 && rssi24 < -90); 945c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle } 946c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 947833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle /* 948c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle int compareWifiConfigurationsTop(WifiConfiguration a, WifiConfiguration b) { 949c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle int scorerOrder = compareWifiConfigurationsWithScorer(a, b); 950c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle int order = compareWifiConfigurations(a, b); 951c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle 952c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle if (scorerOrder * order < 0) { 953b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle if (VDBG) { 954b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" -> compareWifiConfigurationsTop: " + 955b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle "scorer override " + scorerOrder + " " + order); 956b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle } 957c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // For debugging purpose, remember that an override happened 958c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // during that autojoin Attempt 959c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle didOverride = true; 960c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle a.numScorerOverride++; 961c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle b.numScorerOverride++; 962c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle } 963c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle 964c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle if (scorerOrder != 0) { 965c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // If the scorer came up with a result then use the scorer's result, else use 966c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // the order provided by the base comparison function 967c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle order = scorerOrder; 968c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle } 969c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle return order; 970c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle } 971833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle */ 972c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle 9739f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle public int rssiBoostFrom5GHzRssi(int rssi, String dbg) { 9740eebae7334d6129f7ca1344e4b20199794994358vandwalle if (!mWifiConfigStore.enable5GHzPreference) { 9750eebae7334d6129f7ca1344e4b20199794994358vandwalle return 0; 9760eebae7334d6129f7ca1344e4b20199794994358vandwalle } 977e67ec726c07410073575473c0f50dc737629f5davandwalle if (rssi 97877f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist > mWifiConfigStore.bandPreferenceBoostThreshold5.get()) { 979e67ec726c07410073575473c0f50dc737629f5davandwalle // Boost by 2 dB for each point 980e67ec726c07410073575473c0f50dc737629f5davandwalle // Start boosting at -65 981e67ec726c07410073575473c0f50dc737629f5davandwalle // Boost by 20 if above -55 982e67ec726c07410073575473c0f50dc737629f5davandwalle // Boost by 40 if abore -45 9830eebae7334d6129f7ca1344e4b20199794994358vandwalle int boost = mWifiConfigStore.bandPreferenceBoostFactor5 984dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * (rssi - mWifiConfigStore.bandPreferenceBoostThreshold5.get()); 985e67ec726c07410073575473c0f50dc737629f5davandwalle if (boost > 50) { 986815788ba7838fc54310baed3deb9b95548e0ce69vandwalle // 50 dB boost allows jumping from 2.4 to 5GHz 987e67ec726c07410073575473c0f50dc737629f5davandwalle // consistently 988e67ec726c07410073575473c0f50dc737629f5davandwalle boost = 50; 989e67ec726c07410073575473c0f50dc737629f5davandwalle } 9909f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle if (VDBG && dbg != null) { 991f57f8918b8c5872ff4bb141fa9e407bec8442e8dvandwalle logDbg(" " + dbg + ": rssi5 " + rssi + " 5GHz-boost " + boost); 9929f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle } 993e67ec726c07410073575473c0f50dc737629f5davandwalle return boost; 994e67ec726c07410073575473c0f50dc737629f5davandwalle } 995e67ec726c07410073575473c0f50dc737629f5davandwalle 996e67ec726c07410073575473c0f50dc737629f5davandwalle if (rssi 99777f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist < mWifiConfigStore.bandPreferencePenaltyThreshold5.get()) { 9980eebae7334d6129f7ca1344e4b20199794994358vandwalle // penalize if < -75 9990eebae7334d6129f7ca1344e4b20199794994358vandwalle int boost = mWifiConfigStore.bandPreferencePenaltyFactor5 1000dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * (rssi - mWifiConfigStore.bandPreferencePenaltyThreshold5.get()); 10010eebae7334d6129f7ca1344e4b20199794994358vandwalle return boost; 1002e67ec726c07410073575473c0f50dc737629f5davandwalle } 1003e67ec726c07410073575473c0f50dc737629f5davandwalle return 0; 1004e67ec726c07410073575473c0f50dc737629f5davandwalle } 1005dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle 1006dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle /** 1007dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * attemptRoam() function implements the core of the same SSID switching algorithm 1008dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * <p/> 1009dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * Run thru all recent scan result of a WifiConfiguration and select the 1010dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * best one. 1011dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle */ 1012e67ec726c07410073575473c0f50dc737629f5davandwalle public ScanResult attemptRoam(ScanResult a, 1013e67ec726c07410073575473c0f50dc737629f5davandwalle WifiConfiguration current, int age, String currentBSSID) { 1014b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (current == null) { 1015dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle if (VDBG) { 1016b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle logDbg("attemptRoam not associated"); 1017b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 1018e67ec726c07410073575473c0f50dc737629f5davandwalle return a; 10194dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 102025ee2d5d30434712b28aef6eec9460035101e493Vinit Deshpande 10214d381bc39f5263effdae73ec99065eb299b806caVinit Deshpande ScanDetailCache scanDetailCache = 102225ee2d5d30434712b28aef6eec9460035101e493Vinit Deshpande mWifiConfigStore.getScanDetailCache(current); 102325ee2d5d30434712b28aef6eec9460035101e493Vinit Deshpande 102425ee2d5d30434712b28aef6eec9460035101e493Vinit Deshpande if (scanDetailCache == null) { 1025dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle if (VDBG) { 1026b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle logDbg("attemptRoam no scan cache"); 1027b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 1028e67ec726c07410073575473c0f50dc737629f5davandwalle return a; 10294dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 103025ee2d5d30434712b28aef6eec9460035101e493Vinit Deshpande if (scanDetailCache.size() > 6) { 1031dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle if (VDBG) { 1032c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle logDbg("attemptRoam scan cache size " 103325ee2d5d30434712b28aef6eec9460035101e493Vinit Deshpande + scanDetailCache.size() + " --> bail"); 1034b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 1035931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Implement same SSID roaming only for configurations 1036c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle // that have less than 4 BSSIDs 1037e67ec726c07410073575473c0f50dc737629f5davandwalle return a; 10384dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 1039b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle 10402f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle if (current.BSSID != null && !current.BSSID.equals("any")) { 1041dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle if (DBG) { 10422f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle logDbg("attemptRoam() BSSID is set " 10432f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle + current.BSSID + " -> bail"); 1044b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 1045e67ec726c07410073575473c0f50dc737629f5davandwalle return a; 10464dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 10474dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 1048931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Determine which BSSID we want to associate to, taking account 1049c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle // relative strength of 5 and 2.4 GHz BSSIDs 10502451dbcc4f9641df188326215b204b798eb70c46vandwalle long nowMs = System.currentTimeMillis(); 10514dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 105225ee2d5d30434712b28aef6eec9460035101e493Vinit Deshpande for (ScanDetail sd : scanDetailCache.values()) { 105325ee2d5d30434712b28aef6eec9460035101e493Vinit Deshpande ScanResult b = sd.getScanResult(); 105497b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle int bRssiBoost5 = 0; 105597b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle int aRssiBoost5 = 0; 105697b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle int bRssiBoost = 0; 105797b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle int aRssiBoost = 0; 105825ee2d5d30434712b28aef6eec9460035101e493Vinit Deshpande if ((sd.getSeen() == 0) || (b.BSSID == null) 105925ee2d5d30434712b28aef6eec9460035101e493Vinit Deshpande || ((nowMs - sd.getSeen()) > age) 1060e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle || b.autoJoinStatus != ScanResult.ENABLED 1061e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle || b.numIpConfigFailures > 8) { 10624dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle continue; 10633a2a3d226881cce8a4e511302231d843b0def303vandwalle } 10644dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 1065931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Pick first one 10664dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle if (a == null) { 10674dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle a = b; 10684dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle continue; 10694dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 10704dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 1071e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle if (b.numIpConfigFailures < (a.numIpConfigFailures - 1)) { 1072e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // Prefer a BSSID that doesn't have less number of Ip config failures 1073e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle logDbg("attemptRoam: " 1074dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle + b.BSSID + " rssi=" + b.level + " ipfail=" + b.numIpConfigFailures 1075e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " freq=" + b.frequency 1076e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " > " 1077dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle + a.BSSID + " rssi=" + a.level + " ipfail=" + a.numIpConfigFailures 1078e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " freq=" + a.frequency); 1079e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle a = b; 1080e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle continue; 1081e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle } 1082e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle 10832451dbcc4f9641df188326215b204b798eb70c46vandwalle // Apply hysteresis: we favor the currentBSSID by giving it a boost 10847806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle if (currentBSSID != null && currentBSSID.equals(b.BSSID)) { 1085931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Reduce the benefit of hysteresis if RSSI <= -75 108677f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist if (b.level <= mWifiConfigStore.bandPreferencePenaltyThreshold5.get()) { 10870eebae7334d6129f7ca1344e4b20199794994358vandwalle bRssiBoost = mWifiConfigStore.associatedHysteresisLow; 1088c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle } else { 10890eebae7334d6129f7ca1344e4b20199794994358vandwalle bRssiBoost = mWifiConfigStore.associatedHysteresisHigh; 1090c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle } 10914dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 10927806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle if (currentBSSID != null && currentBSSID.equals(a.BSSID)) { 109377f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist if (a.level <= mWifiConfigStore.bandPreferencePenaltyThreshold5.get()) { 1094931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Reduce the benefit of hysteresis if RSSI <= -75 10950eebae7334d6129f7ca1344e4b20199794994358vandwalle aRssiBoost = mWifiConfigStore.associatedHysteresisLow; 1096c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle } else { 10970eebae7334d6129f7ca1344e4b20199794994358vandwalle aRssiBoost = mWifiConfigStore.associatedHysteresisHigh; 1098c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle } 10994dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 11002451dbcc4f9641df188326215b204b798eb70c46vandwalle 110197b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle // Favor 5GHz: give a boost to 5GHz BSSIDs, with a slightly progressive curve 11022451dbcc4f9641df188326215b204b798eb70c46vandwalle // Boost the BSSID if it is on 5GHz, above a threshold 11032451dbcc4f9641df188326215b204b798eb70c46vandwalle // But penalize it if it is on 5GHz and below threshold 110497b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle // 110597b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle // With he current threshold values, 5GHz network with RSSI above -55 110697b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle // Are given a boost of 30DB which is enough to overcome the current BSSID 110797b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle // hysteresis (+14) plus 2.4/5 GHz signal strength difference on most cases 11089f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle // 11099f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle // The "current BSSID" Boost must be added to the BSSID's level so as to introduce\ 11109f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle // soem amount of hysteresis 1111e67ec726c07410073575473c0f50dc737629f5davandwalle if (b.is5GHz()) { 11129f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle bRssiBoost5 = rssiBoostFrom5GHzRssi(b.level + bRssiBoost, b.BSSID); 11134dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 1114e67ec726c07410073575473c0f50dc737629f5davandwalle if (a.is5GHz()) { 11159f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle aRssiBoost5 = rssiBoostFrom5GHzRssi(a.level + aRssiBoost, a.BSSID); 11164dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 11174dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 1118dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle if (VDBG) { 1119c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle String comp = " < "; 1120dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle if (b.level + bRssiBoost + bRssiBoost5 > a.level + aRssiBoost + aRssiBoost5) { 1121c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle comp = " > "; 1122c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle } 11234dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle logDbg("attemptRoam: " 1124c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle + b.BSSID + " rssi=" + b.level + " boost=" + Integer.toString(bRssiBoost) 112597b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle + "/" + Integer.toString(bRssiBoost5) + " freq=" + b.frequency 112697b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle + comp 1127c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle + a.BSSID + " rssi=" + a.level + " boost=" + Integer.toString(aRssiBoost) 1128c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle + "/" + Integer.toString(aRssiBoost5) + " freq=" + a.frequency); 1129c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle } 1130c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle 11312451dbcc4f9641df188326215b204b798eb70c46vandwalle // Compare the RSSIs after applying the hysteresis boost and the 5GHz 11322451dbcc4f9641df188326215b204b798eb70c46vandwalle // boost if applicable 1133dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle if (b.level + bRssiBoost + bRssiBoost5 > a.level + aRssiBoost + aRssiBoost5) { 1134931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // b is the better BSSID 1135c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle a = b; 11364dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 11374dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 11383a2a3d226881cce8a4e511302231d843b0def303vandwalle if (a != null) { 1139dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle if (VDBG) { 11407806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle StringBuilder sb = new StringBuilder(); 1141e67ec726c07410073575473c0f50dc737629f5davandwalle sb.append("attemptRoam: " + current.configKey() + 1142e67ec726c07410073575473c0f50dc737629f5davandwalle " Found " + a.BSSID + " rssi=" + a.level + " freq=" + a.frequency); 11437806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle if (currentBSSID != null) { 11447806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle sb.append(" Current: " + currentBSSID); 11457806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle } 11467806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle sb.append("\n"); 11477806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle logDbg(sb.toString()); 11483a2a3d226881cce8a4e511302231d843b0def303vandwalle } 11494dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 11503a2a3d226881cce8a4e511302231d843b0def303vandwalle return a; 11514dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 11524dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 1153931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 11542451dbcc4f9641df188326215b204b798eb70c46vandwalle * getNetworkScore() 1155dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * <p/> 11562451dbcc4f9641df188326215b204b798eb70c46vandwalle * if scorer is present, get the network score of a WifiConfiguration 1157dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * <p/> 11582451dbcc4f9641df188326215b204b798eb70c46vandwalle * Note: this should be merge with setVisibility 11592451dbcc4f9641df188326215b204b798eb70c46vandwalle * 11602451dbcc4f9641df188326215b204b798eb70c46vandwalle * @param config 11612451dbcc4f9641df188326215b204b798eb70c46vandwalle * @return score 11622451dbcc4f9641df188326215b204b798eb70c46vandwalle */ 116381c9ea6c343bc7f8d87095237e59844a974d0b70Jeff Davidson int getConfigNetworkScore(WifiConfiguration config, int age, boolean isActive) { 11642451dbcc4f9641df188326215b204b798eb70c46vandwalle 11652451dbcc4f9641df188326215b204b798eb70c46vandwalle if (mNetworkScoreCache == null) { 1166e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle if (VDBG) { 1167b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" getConfigNetworkScore for " + config.configKey() 1168e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle + " -> no scorer, hence no scores"); 1169e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle } 11701db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle return WifiNetworkScoreCache.INVALID_NETWORK_SCORE; 11711db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle } 117225ee2d5d30434712b28aef6eec9460035101e493Vinit Deshpande 117325ee2d5d30434712b28aef6eec9460035101e493Vinit Deshpande if (mWifiConfigStore.getScanDetailCache(config) == null) { 1174e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle if (VDBG) { 1175b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" getConfigNetworkScore for " + config.configKey() 1176e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle + " -> no scan cache"); 1177e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle } 11781db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle return WifiNetworkScoreCache.INVALID_NETWORK_SCORE; 11792451dbcc4f9641df188326215b204b798eb70c46vandwalle } 11802451dbcc4f9641df188326215b204b798eb70c46vandwalle 11812451dbcc4f9641df188326215b204b798eb70c46vandwalle // Get current date 11822451dbcc4f9641df188326215b204b798eb70c46vandwalle long nowMs = System.currentTimeMillis(); 11832451dbcc4f9641df188326215b204b798eb70c46vandwalle 11841db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle int startScore = -10000; 11851db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle 11862451dbcc4f9641df188326215b204b798eb70c46vandwalle // Run thru all cached scan results 118725ee2d5d30434712b28aef6eec9460035101e493Vinit Deshpande for (ScanDetail sd : mWifiConfigStore.getScanDetailCache(config).values()) { 118825ee2d5d30434712b28aef6eec9460035101e493Vinit Deshpande ScanResult result = sd.getScanResult(); 118925ee2d5d30434712b28aef6eec9460035101e493Vinit Deshpande if ((nowMs - sd.getSeen()) < age) { 119081c9ea6c343bc7f8d87095237e59844a974d0b70Jeff Davidson int sc = mNetworkScoreCache.getNetworkScore(result, isActive); 11911db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle if (sc > startScore) { 11921db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle startScore = sc; 11932451dbcc4f9641df188326215b204b798eb70c46vandwalle } 11942451dbcc4f9641df188326215b204b798eb70c46vandwalle } 11952451dbcc4f9641df188326215b204b798eb70c46vandwalle } 11961db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle if (startScore == -10000) { 11971db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle startScore = WifiNetworkScoreCache.INVALID_NETWORK_SCORE; 11981db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle } 1199e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle if (VDBG) { 1200e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle if (startScore == WifiNetworkScoreCache.INVALID_NETWORK_SCORE) { 1201b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" getConfigNetworkScore for " + config.configKey() 1202e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle + " -> no available score"); 1203e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle } else { 1204b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" getConfigNetworkScore for " + config.configKey() 120581c9ea6c343bc7f8d87095237e59844a974d0b70Jeff Davidson + " isActive=" + isActive 1206e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle + " score = " + Integer.toString(startScore)); 1207e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle } 1208e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle } 1209e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle 12101db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle return startScore; 12112451dbcc4f9641df188326215b204b798eb70c46vandwalle } 12122451dbcc4f9641df188326215b204b798eb70c46vandwalle 12132451dbcc4f9641df188326215b204b798eb70c46vandwalle /** 12148639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson * Set whether connections to untrusted connections are allowed. 12158639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson */ 12168639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson void setAllowUntrustedConnections(boolean allow) { 12178639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson boolean changed = mAllowUntrustedConnections != allow; 12188639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson mAllowUntrustedConnections = allow; 12198639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson if (changed) { 1220005c1ef113192f898499a407dd266393a8d6b076vandwalle // Trigger a scan so as to reattempt autojoin 1221005c1ef113192f898499a407dd266393a8d6b076vandwalle mWifiStateMachine.startScanForUntrustedSettingChange(); 12228639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson } 12238639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson } 12248639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson 12258639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson private boolean isOpenNetwork(ScanResult result) { 12268639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson return !result.capabilities.contains("WEP") && 12278639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson !result.capabilities.contains("PSK") && 12288639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson !result.capabilities.contains("EAP"); 12298639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson } 12308639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson 123116fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson private boolean haveRecentlySeenScoredBssid(WifiConfiguration config) { 123216fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson long ephemeralOutOfRangeTimeoutMs = Settings.Global.getLong( 123316fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson mContext.getContentResolver(), 123416fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson Settings.Global.WIFI_EPHEMERAL_OUT_OF_RANGE_TIMEOUT_MS, 123516fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson DEFAULT_EPHEMERAL_OUT_OF_RANGE_TIMEOUT_MS); 123616fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson 123716fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson // Check whether the currently selected network has a score curve. If 123816fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson // ephemeralOutOfRangeTimeoutMs is <= 0, then this is all we check, and we stop here. 123916fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson // Otherwise, we stop here if the currently selected network has a score. If it doesn't, we 124016fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson // keep going - it could be that another BSSID is in range (has been seen recently) which 124116fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson // has a score, even if the one we're immediately connected to doesn't. 1242dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle ScanResult currentScanResult = mWifiStateMachine.getCurrentScanResult(); 124316fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson boolean currentNetworkHasScoreCurve = mNetworkScoreCache.hasScoreCurve(currentScanResult); 124416fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson if (ephemeralOutOfRangeTimeoutMs <= 0 || currentNetworkHasScoreCurve) { 124516fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson if (DBG) { 124616fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson if (currentNetworkHasScoreCurve) { 124716fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson logDbg("Current network has a score curve, keeping network: " 124816fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson + currentScanResult); 124916fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson } else { 125016fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson logDbg("Current network has no score curve, giving up: " + config.SSID); 125116fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson } 125216fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson } 125316fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson return currentNetworkHasScoreCurve; 125416fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson } 125516fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson 125625ee2d5d30434712b28aef6eec9460035101e493Vinit Deshpande if (mWifiConfigStore.getScanDetailCache(config) == null 125725ee2d5d30434712b28aef6eec9460035101e493Vinit Deshpande || mWifiConfigStore.getScanDetailCache(config).isEmpty()) { 125816fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson return false; 125916fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson } 126016fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson 126116fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson long currentTimeMs = System.currentTimeMillis(); 126225ee2d5d30434712b28aef6eec9460035101e493Vinit Deshpande for (ScanDetail sd : mWifiConfigStore.getScanDetailCache(config).values()) { 126325ee2d5d30434712b28aef6eec9460035101e493Vinit Deshpande ScanResult result = sd.getScanResult(); 126425ee2d5d30434712b28aef6eec9460035101e493Vinit Deshpande if (currentTimeMs > sd.getSeen() 126525ee2d5d30434712b28aef6eec9460035101e493Vinit Deshpande && currentTimeMs - sd.getSeen() < ephemeralOutOfRangeTimeoutMs 126616fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson && mNetworkScoreCache.hasScoreCurve(result)) { 126716fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson if (DBG) { 126816fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson logDbg("Found scored BSSID, keeping network: " + result.BSSID); 126916fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson } 127016fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson return true; 127116fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson } 127216fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson } 127316fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson 127416fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson if (DBG) { 127516fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson logDbg("No recently scored BSSID found, giving up connection: " + config.SSID); 127616fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson } 127716fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson return false; 127816fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson } 127916fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson 128077f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist // After WifiStateMachine ask the supplicant to associate or reconnect 128177f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist // we might still obtain scan results from supplicant 128277f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist // however the supplicant state in the mWifiInfo and supplicant state tracker 128377f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist // are updated when we get the supplicant state change message which can be 128477f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist // processed after the SCAN_RESULT message, so at this point the framework doesn't 128577f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist // know that supplicant is ASSOCIATING. 128677f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist // A good fix for this race condition would be for the WifiStateMachine to add 128777f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist // a new transient state where it expects to get the supplicant message indicating 128877f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist // that it started the association process and within which critical operations 128977f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist // like autojoin should be deleted. 129077f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist 129177f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist // This transient state would remove the need for the roam Wathchdog which 129277f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist // basically does that. 129377f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist 129477f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist // At the moment, we just query the supplicant state synchronously with the 129577f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist // mWifiNative.status() command, which allow us to know that 129677f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist // supplicant has started association process, even though we didnt yet get the 129777f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist // SUPPLICANT_STATE_CHANGE message. 129877f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist 129977f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist private static final List<String> ASSOC_STATES = Arrays.asList( 130077f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist "ASSOCIATING", 130177f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist "ASSOCIATED", 130277f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist "FOUR_WAY_HANDSHAKE", 130377f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist "GROUP_KEY_HANDSHAKE"); 130477f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist 130577f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist private int getNetID(String wpaStatus) { 130677f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist if (VDBG) { 130777f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist logDbg("attemptAutoJoin() status=" + wpaStatus); 130877f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist } 130977f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist 131077f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist try { 131177f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist int id = WifiConfiguration.INVALID_NETWORK_ID; 131277f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist String state = null; 131377f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist BufferedReader br = new BufferedReader(new StringReader(wpaStatus)); 131477f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist String line; 1315dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle while ((line = br.readLine()) != null) { 131677f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist int split = line.indexOf('='); 131777f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist if (split < 0) { 131877f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist continue; 131977f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist } 132077f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist 132177f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist String name = line.substring(0, split); 132277f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist if (name.equals("id")) { 132377f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist try { 1324dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle id = Integer.parseInt(line.substring(split + 1)); 132577f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist if (state != null) { 132677f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist break; 132777f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist } 1328dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle } catch (NumberFormatException nfe) { 132977f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist return WifiConfiguration.INVALID_NETWORK_ID; 133077f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist } 1331dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle } else if (name.equals("wpa_state")) { 1332dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle state = line.substring(split + 1); 133377f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist if (ASSOC_STATES.contains(state)) { 133477f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist return WifiConfiguration.INVALID_NETWORK_ID; 1335dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle } else if (id >= 0) { 133677f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist break; 133777f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist } 133877f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist } 133977f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist } 134077f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist return id; 1341dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle } catch (IOException ioe) { 134277f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist return WifiConfiguration.INVALID_NETWORK_ID; // Won't happen 134377f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist } 134477f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist } 134577f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist 134677f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist private boolean setCurrentConfigurationKey(WifiConfiguration currentConfig, 134777f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist int supplicantNetId) { 134877f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist if (currentConfig != null) { 134977f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist if (supplicantNetId != currentConfig.networkId 135077f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist // https://b.corp.google.com/issue?id=16484607 135177f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist // mark this condition as an error only if the mismatched networkId are valid 135277f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist && supplicantNetId != WifiConfiguration.INVALID_NETWORK_ID 135377f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist && currentConfig.networkId != WifiConfiguration.INVALID_NETWORK_ID) { 135477f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist logDbg("attemptAutoJoin() ERROR wpa_supplicant out of sync nid=" 135577f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist + Integer.toString(supplicantNetId) + " WifiStateMachine=" 135677f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist + Integer.toString(currentConfig.networkId)); 135777f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist mWifiStateMachine.disconnectCommand(); 135877f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist return false; 135977f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist } else if (currentConfig.ephemeral && (!mAllowUntrustedConnections || 136077f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist !haveRecentlySeenScoredBssid(currentConfig))) { 136177f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist // The current connection is untrusted (the framework added it), but we're either 136277f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist // no longer allowed to connect to such networks, the score has been nullified 136377f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist // since we connected, or the scored BSSID has gone out of range. 136477f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist // Drop the current connection and perform the rest of autojoin. 136577f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist logDbg("attemptAutoJoin() disconnecting from unwanted ephemeral network"); 136677f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist mWifiStateMachine.disconnectCommand(Process.WIFI_UID, 136777f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist mAllowUntrustedConnections ? 1 : 0); 136877f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist return false; 136977f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist } else { 137077f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist mCurrentConfigurationKey = currentConfig.configKey(); 137177f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist return true; 137277f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist } 137377f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist } else { 137477f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist // If not invalid, then maybe in the process of associating, skip this attempt 137577f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist return supplicantNetId == WifiConfiguration.INVALID_NETWORK_ID; 137677f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist } 137777f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist } 137877f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist 137977f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist private void updateBlackListStatus(WifiConfiguration config, long now) { 138077f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist // Wait for 5 minutes before reenabling config that have known, 138177f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist // repeated connection or DHCP failures 138277f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist if (config.disableReason == WifiConfiguration.DISABLED_DHCP_FAILURE 138377f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist || config.disableReason 138477f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist == WifiConfiguration.DISABLED_ASSOCIATION_REJECT 138577f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist || config.disableReason 138677f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist == WifiConfiguration.DISABLED_AUTH_FAILURE) { 138777f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist if (config.blackListTimestamp == 0 138877f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist || (config.blackListTimestamp > now)) { 138977f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist // Sanitize the timestamp 139077f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist config.blackListTimestamp = now; 139177f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist } 139277f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist if ((now - config.blackListTimestamp) > 139377f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist mWifiConfigStore.wifiConfigBlacklistMinTimeMilli) { 139477f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist // Re-enable the WifiConfiguration 139577f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist config.status = WifiConfiguration.Status.ENABLED; 139677f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist 139777f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist // Reset the blacklist condition 139877f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist config.numConnectionFailures = 0; 139977f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist config.numIpConfigFailures = 0; 140077f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist config.numAuthFailures = 0; 140177f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 140277f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist 140377f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist config.dirty = true; 140477f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist } else { 140577f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist if (VDBG) { 140677f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist long delay = mWifiConfigStore.wifiConfigBlacklistMinTimeMilli 140777f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist - (now - config.blackListTimestamp); 140877f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist logDbg("attemptautoJoin " + config.configKey() 140977f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist + " dont unblacklist yet, waiting for " 141077f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist + delay + " ms"); 141177f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist } 141277f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist } 141377f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist } 141477f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist // Avoid networks disabled because of AUTH failure altogether 141577f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist if (DBG) { 141677f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist logDbg("attemptAutoJoin skip candidate due to auto join status " 141777f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist + Integer.toString(config.autoJoinStatus) + " key " 141877f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist + config.configKey(true) 141977f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist + " reason " + config.disableReason); 142077f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist } 142177f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist } 1422dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle 142377f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist boolean underSoftThreshold(WifiConfiguration config) { 142477f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist return config.visibility.rssi24 < mWifiConfigStore.thresholdUnblacklistThreshold24Soft.get() 1425dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle && config.visibility.rssi5 < mWifiConfigStore.thresholdUnblacklistThreshold5Soft.get(); 142677f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist } 142777f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist 142877f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist boolean underHardThreshold(WifiConfiguration config) { 142977f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist return config.visibility.rssi24 < mWifiConfigStore.thresholdUnblacklistThreshold24Hard.get() 1430dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle && config.visibility.rssi5 < mWifiConfigStore.thresholdUnblacklistThreshold5Hard.get(); 143177f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist } 143277f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist 143377f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist boolean underThreshold(WifiConfiguration config, int rssi24, int rssi5) { 143477f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist return config.visibility.rssi24 < rssi24 && config.visibility.rssi5 < rssi5; 143577f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist } 143677f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist 14378639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson /** 1438931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * attemptAutoJoin() function implements the core of the a network switching algorithm 143968fee36dac1dda5c596c00ef33fdbc0962e9ec9fvandwalle * Return false if no acceptable networks were found. 1440931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 144168fee36dac1dda5c596c00ef33fdbc0962e9ec9fvandwalle boolean attemptAutoJoin() { 144268fee36dac1dda5c596c00ef33fdbc0962e9ec9fvandwalle boolean found = false; 1443c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle didOverride = false; 14441ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle didBailDueToWeakRssi = false; 1445b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle int networkSwitchType = AUTO_JOIN_IDLE; 14464dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 14478242cc81341c80ab5bc057ffdad99a3a1d95be5cvandwalle long now = System.currentTimeMillis(); 14488242cc81341c80ab5bc057ffdad99a3a1d95be5cvandwalle 14498c9088d11880553458f09377cc60d6eb7e66747bvandwalle String lastSelectedConfiguration = mWifiConfigStore.getLastSelectedConfiguration(); 14508c9088d11880553458f09377cc60d6eb7e66747bvandwalle 1451931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Reset the currentConfiguration Key, and set it only if WifiStateMachine and 1452453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle // supplicant agree 1453453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle mCurrentConfigurationKey = null; 1454453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle WifiConfiguration currentConfiguration = mWifiStateMachine.getCurrentWifiConfiguration(); 1455453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle 1456f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration candidate = null; 1457f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1458931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Obtain the subset of recently seen networks 1459833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle List<WifiConfiguration> list = 1460833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle mWifiConfigStore.getRecentConfiguredNetworks(mScanResultAutoJoinAge, false); 1461f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (list == null) { 1462dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle if (VDBG) logDbg("attemptAutoJoin nothing known=" + 146325ee2d5d30434712b28aef6eec9460035101e493Vinit Deshpande mWifiConfigStore.getConfiguredNetworkSize()); 146468fee36dac1dda5c596c00ef33fdbc0962e9ec9fvandwalle return false; 1465f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1466f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1467931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Find the currently connected network: ask the supplicant directly 146877f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist 146977f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist int supplicantNetId = getNetID(mWifiNative.status(true)); 147077f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist 1471ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (DBG) { 14727806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle String conf = ""; 1473b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle String last = ""; 14747806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle if (currentConfiguration != null) { 1475e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle conf = " current=" + currentConfiguration.configKey(); 1476b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle } 1477b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle if (lastSelectedConfiguration != null) { 14782f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle last = " last=" + lastSelectedConfiguration; 14797806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle } 1480ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle logDbg("attemptAutoJoin() num recent config " + Integer.toString(list.size()) 1481b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + conf + last 1482b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " ---> suppNetId=" + Integer.toString(supplicantNetId)); 1483ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 1484f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 148577f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist if (!setCurrentConfigurationKey(currentConfiguration, supplicantNetId)) { 148677f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist return false; 1487453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle } 1488453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle 1489b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle int currentNetId = -1; 1490b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle if (currentConfiguration != null) { 1491931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // If we are associated to a configuration, it will 1492b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle // be compared thru the compareNetwork function 1493b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle currentNetId = currentConfiguration.networkId; 1494b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle } 1495b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle 1496931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 1497931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * Run thru all visible configurations without looking at the one we 1498c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle * are currently associated to 14994dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle * select Best Network candidate from known WifiConfigurations 1500931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 1501f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for (WifiConfiguration config : list) { 1502e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle if (config.SSID == null) { 1503b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle continue; 1504e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle } 1505e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle 150677f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist if (config.autoJoinStatus >= WifiConfiguration.AUTO_JOIN_DISABLED_ON_AUTH_FAILURE) { 150777f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist updateBlackListStatus(config, now); 1508f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle continue; 1509f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1510f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1511931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Try to un-blacklist based on elapsed time 151227355a942653264388e909a4276196ee63e57811vandwalle if (config.blackListTimestamp > 0) { 151327355a942653264388e909a4276196ee63e57811vandwalle if (now < config.blackListTimestamp) { 1514931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 1515931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * looks like there was a change in the system clock since we black listed, and 1516931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * timestamp is not meaningful anymore, hence lose it. 1517931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * this event should be rare enough so that we still want to lose the black list 15182451dbcc4f9641df188326215b204b798eb70c46vandwalle */ 151927355a942653264388e909a4276196ee63e57811vandwalle config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 152027355a942653264388e909a4276196ee63e57811vandwalle } else { 15214dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle if ((now - config.blackListTimestamp) > loseBlackListHardMilli) { 1522931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Reenable it after 18 hours, i.e. next day 152327355a942653264388e909a4276196ee63e57811vandwalle config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 15244dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } else if ((now - config.blackListTimestamp) > loseBlackListSoftMilli) { 1525931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Lose blacklisting due to bad link 152627355a942653264388e909a4276196ee63e57811vandwalle config.setAutoJoinStatus(config.autoJoinStatus - 8); 152727355a942653264388e909a4276196ee63e57811vandwalle } 152827355a942653264388e909a4276196ee63e57811vandwalle } 152927355a942653264388e909a4276196ee63e57811vandwalle } 153027355a942653264388e909a4276196ee63e57811vandwalle 153177f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist if (config.visibility == null) { 153277f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist continue; 153377f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist } 153477f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist 1535931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Try to unblacklist based on good visibility 153677f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist if (underSoftThreshold(config)) { 153777f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist logDenial("attemptAutoJoin do not unblacklist due to low visibility ", config); 153877f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist } else if (underHardThreshold(config)) { 1539931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // If the network is simply temporary disabled, don't allow reconnect until 1540931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // RSSI becomes good enough 154127355a942653264388e909a4276196ee63e57811vandwalle config.setAutoJoinStatus(config.autoJoinStatus - 1); 154277f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist logDenial("attemptAutoJoin good candidate seen, bumped soft -> status=", config); 154327355a942653264388e909a4276196ee63e57811vandwalle } else { 1544c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle config.setAutoJoinStatus(config.autoJoinStatus - 3); 154577f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist logDenial("attemptAutoJoin good candidate seen, bumped hard -> status=", config); 154627355a942653264388e909a4276196ee63e57811vandwalle } 154727355a942653264388e909a4276196ee63e57811vandwalle 154827355a942653264388e909a4276196ee63e57811vandwalle if (config.autoJoinStatus >= 154927355a942653264388e909a4276196ee63e57811vandwalle WifiConfiguration.AUTO_JOIN_TEMPORARY_DISABLED) { 1550931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Network is blacklisted, skip 155177f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist logDenial("attemptAutoJoin skip blacklisted -> status=", config); 155227355a942653264388e909a4276196ee63e57811vandwalle continue; 155327355a942653264388e909a4276196ee63e57811vandwalle } 1554f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config.networkId == currentNetId) { 1555ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (DBG) { 155621bc54cb37a0085b1c909cb4d55ebb12a2facefbvandwalle logDbg("attemptAutoJoin skip current candidate " 155721bc54cb37a0085b1c909cb4d55ebb12a2facefbvandwalle + Integer.toString(currentNetId) 1558ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle + " key " + config.configKey(true)); 1559ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 1560f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle continue; 1561f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1562f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 15630eebae7334d6129f7ca1344e4b20199794994358vandwalle boolean isLastSelected = false; 15640eebae7334d6129f7ca1344e4b20199794994358vandwalle if (lastSelectedConfiguration != null && 15650eebae7334d6129f7ca1344e4b20199794994358vandwalle config.configKey().equals(lastSelectedConfiguration)) { 15660eebae7334d6129f7ca1344e4b20199794994358vandwalle isLastSelected = true; 15670eebae7334d6129f7ca1344e4b20199794994358vandwalle } 15680eebae7334d6129f7ca1344e4b20199794994358vandwalle 15694fa99f57077ab287d6ed1b51cf308c44ce8bbe0bvandwalle if (config.lastRoamingFailure != 0 15704fa99f57077ab287d6ed1b51cf308c44ce8bbe0bvandwalle && currentConfiguration != null 15714fa99f57077ab287d6ed1b51cf308c44ce8bbe0bvandwalle && (lastSelectedConfiguration == null 15724fa99f57077ab287d6ed1b51cf308c44ce8bbe0bvandwalle || !config.configKey().equals(lastSelectedConfiguration))) { 15734fa99f57077ab287d6ed1b51cf308c44ce8bbe0bvandwalle // Apply blacklisting for roaming to this config if: 15744fa99f57077ab287d6ed1b51cf308c44ce8bbe0bvandwalle // - the target config had a recent roaming failure 15754fa99f57077ab287d6ed1b51cf308c44ce8bbe0bvandwalle // - we are currently associated 15764fa99f57077ab287d6ed1b51cf308c44ce8bbe0bvandwalle // - the target config is not the last selected 15774fa99f57077ab287d6ed1b51cf308c44ce8bbe0bvandwalle if (now > config.lastRoamingFailure 15784fa99f57077ab287d6ed1b51cf308c44ce8bbe0bvandwalle && (now - config.lastRoamingFailure) 15794fa99f57077ab287d6ed1b51cf308c44ce8bbe0bvandwalle < config.roamingFailureBlackListTimeMilli) { 15804fa99f57077ab287d6ed1b51cf308c44ce8bbe0bvandwalle if (DBG) { 15814fa99f57077ab287d6ed1b51cf308c44ce8bbe0bvandwalle logDbg("compareNetwork not switching to " + config.configKey() 15824fa99f57077ab287d6ed1b51cf308c44ce8bbe0bvandwalle + " from current " + currentConfiguration.configKey() 15834fa99f57077ab287d6ed1b51cf308c44ce8bbe0bvandwalle + " because it is blacklisted due to roam failure, " 15844fa99f57077ab287d6ed1b51cf308c44ce8bbe0bvandwalle + " blacklist remain time = " 15854fa99f57077ab287d6ed1b51cf308c44ce8bbe0bvandwalle + (now - config.lastRoamingFailure) + " ms"); 15864fa99f57077ab287d6ed1b51cf308c44ce8bbe0bvandwalle } 15874fa99f57077ab287d6ed1b51cf308c44ce8bbe0bvandwalle continue; 15884fa99f57077ab287d6ed1b51cf308c44ce8bbe0bvandwalle } 15894fa99f57077ab287d6ed1b51cf308c44ce8bbe0bvandwalle } 15904fa99f57077ab287d6ed1b51cf308c44ce8bbe0bvandwalle 15911ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle int boost = config.autoJoinUseAggressiveJoinAttemptThreshold + weakRssiBailCount; 159277f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist if (underThreshold(config, 159377f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist mWifiConfigStore.thresholdInitialAutoJoinAttemptMin24RSSI.get() - boost, 159477f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist mWifiConfigStore.thresholdInitialAutoJoinAttemptMin5RSSI.get() - boost)) { 159577f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist 159677f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist logDenial("attemptAutoJoin skip due to low visibility -> status=", config); 15970eebae7334d6129f7ca1344e4b20199794994358vandwalle 1598c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // Don't try to autojoin a network that is too far but 1599c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // If that configuration is a user's choice however, try anyway 16000eebae7334d6129f7ca1344e4b20199794994358vandwalle if (!isLastSelected) { 16010eebae7334d6129f7ca1344e4b20199794994358vandwalle config.autoJoinBailedDueToLowRssi = true; 16021ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle didBailDueToWeakRssi = true; 16038c9088d11880553458f09377cc60d6eb7e66747bvandwalle continue; 16040eebae7334d6129f7ca1344e4b20199794994358vandwalle } else { 16050eebae7334d6129f7ca1344e4b20199794994358vandwalle // Next time, try to be a bit more aggressive in auto-joining 16060eebae7334d6129f7ca1344e4b20199794994358vandwalle if (config.autoJoinUseAggressiveJoinAttemptThreshold 1607dd0c558776fcfba3f754bb0cd6533f2c9c23ec1evandwalle < WifiConfiguration.MAX_INITIAL_AUTO_JOIN_RSSI_BOOST 1608dd0c558776fcfba3f754bb0cd6533f2c9c23ec1evandwalle && config.autoJoinBailedDueToLowRssi) { 1609dd0c558776fcfba3f754bb0cd6533f2c9c23ec1evandwalle config.autoJoinUseAggressiveJoinAttemptThreshold += 4; 16104dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 16118c9088d11880553458f09377cc60d6eb7e66747bvandwalle } 16120eebae7334d6129f7ca1344e4b20199794994358vandwalle } 1613d30127db46224e45554f8964209221bba8ad41d9vandwalle if (config.numNoInternetAccessReports > 0 1614d30127db46224e45554f8964209221bba8ad41d9vandwalle && !isLastSelected 1615d30127db46224e45554f8964209221bba8ad41d9vandwalle && !config.validatedInternetAccess) { 1616d30127db46224e45554f8964209221bba8ad41d9vandwalle // Avoid autoJoining this network because last time we used it, it didn't 1617d30127db46224e45554f8964209221bba8ad41d9vandwalle // have internet access, and we never manage to validate internet access on this 1618d30127db46224e45554f8964209221bba8ad41d9vandwalle // network configuration 16190eebae7334d6129f7ca1344e4b20199794994358vandwalle if (DBG) { 1620d30127db46224e45554f8964209221bba8ad41d9vandwalle logDbg("attemptAutoJoin skip candidate due to no InternetAccess " 1621d30127db46224e45554f8964209221bba8ad41d9vandwalle + config.configKey(true) 1622d30127db46224e45554f8964209221bba8ad41d9vandwalle + " num reports " + config.numNoInternetAccessReports); 16239f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle } 16240eebae7334d6129f7ca1344e4b20199794994358vandwalle continue; 16258c9088d11880553458f09377cc60d6eb7e66747bvandwalle } 16268c9088d11880553458f09377cc60d6eb7e66747bvandwalle 1627ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (DBG) { 1628e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle String cur = ""; 1629e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle if (candidate != null) { 1630e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle cur = " current candidate " + candidate.configKey(); 1631e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle } 1632e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle logDbg("attemptAutoJoin trying id=" 1633c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle + Integer.toString(config.networkId) + " " 1634b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + config.configKey(true) 1635e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " status=" + config.autoJoinStatus 1636e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + cur); 1637ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 1638f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1639f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (candidate == null) { 1640f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle candidate = config; 1641f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 1642dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle if (VDBG) { 1643453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("attemptAutoJoin will compare candidate " + candidate.configKey() 16444dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + " with " + config.configKey()); 1645f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 16464d381bc39f5263effdae73ec99065eb299b806caVinit Deshpande 1647833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle int order = compareWifiConfigurations(candidate, config); 16484d381bc39f5263effdae73ec99065eb299b806caVinit Deshpande if (VDBG) { 16494d381bc39f5263effdae73ec99065eb299b806caVinit Deshpande logDbg("attemptAutoJoin compareWifiConfigurations returned " + order); 16504d381bc39f5263effdae73ec99065eb299b806caVinit Deshpande } 16512451dbcc4f9641df188326215b204b798eb70c46vandwalle 16522451dbcc4f9641df188326215b204b798eb70c46vandwalle // The lastSelectedConfiguration is the configuration the user has manually selected 1653c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // thru WifiPicker, or that a 3rd party app asked us to connect to via the 16542451dbcc4f9641df188326215b204b798eb70c46vandwalle // enableNetwork with disableOthers=true WifiManager API 16552451dbcc4f9641df188326215b204b798eb70c46vandwalle // As this is a direct user choice, we strongly prefer this configuration, 16562451dbcc4f9641df188326215b204b798eb70c46vandwalle // hence give +/-100 16572451dbcc4f9641df188326215b204b798eb70c46vandwalle if ((lastSelectedConfiguration != null) 16582451dbcc4f9641df188326215b204b798eb70c46vandwalle && candidate.configKey().equals(lastSelectedConfiguration)) { 16592451dbcc4f9641df188326215b204b798eb70c46vandwalle // candidate is the last selected configuration, 16602451dbcc4f9641df188326215b204b798eb70c46vandwalle // so keep it above connect choices (+/-60) and 16612451dbcc4f9641df188326215b204b798eb70c46vandwalle // above RSSI/scorer based selection of linked configuration (+/- 50) 16622451dbcc4f9641df188326215b204b798eb70c46vandwalle // by reducing order by -100 16632451dbcc4f9641df188326215b204b798eb70c46vandwalle order = order - 100; 1664dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle if (VDBG) { 16652f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle logDbg(" ...and prefers -100 " + candidate.configKey() 16662451dbcc4f9641df188326215b204b798eb70c46vandwalle + " over " + config.configKey() 16672451dbcc4f9641df188326215b204b798eb70c46vandwalle + " because it is the last selected -> " 16682451dbcc4f9641df188326215b204b798eb70c46vandwalle + Integer.toString(order)); 16692451dbcc4f9641df188326215b204b798eb70c46vandwalle } 16702451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if ((lastSelectedConfiguration != null) 16712451dbcc4f9641df188326215b204b798eb70c46vandwalle && config.configKey().equals(lastSelectedConfiguration)) { 16722451dbcc4f9641df188326215b204b798eb70c46vandwalle // config is the last selected configuration, 16732451dbcc4f9641df188326215b204b798eb70c46vandwalle // so keep it above connect choices (+/-60) and 16742451dbcc4f9641df188326215b204b798eb70c46vandwalle // above RSSI/scorer based selection of linked configuration (+/- 50) 16752451dbcc4f9641df188326215b204b798eb70c46vandwalle // by increasing order by +100 16762451dbcc4f9641df188326215b204b798eb70c46vandwalle order = order + 100; 1677dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle if (VDBG) { 16782f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle logDbg(" ...and prefers +100 " + config.configKey() 16792451dbcc4f9641df188326215b204b798eb70c46vandwalle + " over " + candidate.configKey() 16802451dbcc4f9641df188326215b204b798eb70c46vandwalle + " because it is the last selected -> " 16812451dbcc4f9641df188326215b204b798eb70c46vandwalle + Integer.toString(order)); 16822451dbcc4f9641df188326215b204b798eb70c46vandwalle } 16832451dbcc4f9641df188326215b204b798eb70c46vandwalle } 16842451dbcc4f9641df188326215b204b798eb70c46vandwalle 1685f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (order > 0) { 1686931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Ascending : candidate < config 1687f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle candidate = config; 1688f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1689f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1690f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1691f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 16922451dbcc4f9641df188326215b204b798eb70c46vandwalle // Now, go thru scan result to try finding a better untrusted network 1693833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle if (mNetworkScoreCache != null && mAllowUntrustedConnections) { 1694f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int rssi5 = WifiConfiguration.INVALID_RSSI; 1695f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int rssi24 = WifiConfiguration.INVALID_RSSI; 1696f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (candidate != null) { 1697f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle rssi5 = candidate.visibility.rssi5; 1698f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle rssi24 = candidate.visibility.rssi24; 1699f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1700f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1701931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Get current date 17022451dbcc4f9641df188326215b204b798eb70c46vandwalle long nowMs = System.currentTimeMillis(); 1703c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle int currentScore = -10000; 1704c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // The untrusted network with highest score 170525ee2d5d30434712b28aef6eec9460035101e493Vinit Deshpande ScanDetail untrustedCandidate = null; 17062451dbcc4f9641df188326215b204b798eb70c46vandwalle // Look for untrusted scored network only if the current candidate is bad 1707c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (isBadCandidate(rssi24, rssi5)) { 170825ee2d5d30434712b28aef6eec9460035101e493Vinit Deshpande for (ScanDetail scanDetail : scanResultCache.values()) { 170925ee2d5d30434712b28aef6eec9460035101e493Vinit Deshpande ScanResult result = scanDetail.getScanResult(); 1710c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // We look only at untrusted networks with a valid SSID 1711c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // A trusted result would have been looked at thru it's Wificonfiguration 17128639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson if (TextUtils.isEmpty(result.SSID) || !result.untrusted || 17138639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson !isOpenNetwork(result)) { 1714c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle continue; 1715c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle } 17162c9b6297f3cd74780a084634320d03a413a3b779Jeff Davidson String quotedSSID = "\"" + result.SSID + "\""; 17172c9b6297f3cd74780a084634320d03a413a3b779Jeff Davidson if (mWifiConfigStore.mDeletedEphemeralSSIDs.contains(quotedSSID)) { 17182ce99b40c36ed0352b31aa85d5f9383d5f0506f5vandwalle // SSID had been Forgotten by user, then don't score it 17192ce99b40c36ed0352b31aa85d5f9383d5f0506f5vandwalle continue; 17202ce99b40c36ed0352b31aa85d5f9383d5f0506f5vandwalle } 1721833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle if ((nowMs - result.seen) < mScanResultAutoJoinAge) { 1722c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Increment usage count for the network 17232c9b6297f3cd74780a084634320d03a413a3b779Jeff Davidson mWifiConnectionStatistics.incrementOrAddUntrusted(quotedSSID, 0, 1); 1724c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 17252c9b6297f3cd74780a084634320d03a413a3b779Jeff Davidson boolean isActiveNetwork = currentConfiguration != null 17262c9b6297f3cd74780a084634320d03a413a3b779Jeff Davidson && currentConfiguration.SSID.equals(quotedSSID); 172781c9ea6c343bc7f8d87095237e59844a974d0b70Jeff Davidson int score = mNetworkScoreCache.getNetworkScore(result, isActiveNetwork); 1728c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (score != WifiNetworkScoreCache.INVALID_NETWORK_SCORE 1729c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle && score > currentScore) { 1730c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Highest score: Select this candidate 1731c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle currentScore = score; 173225ee2d5d30434712b28aef6eec9460035101e493Vinit Deshpande untrustedCandidate = scanDetail; 1733c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (VDBG) { 1734c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle logDbg("AutoJoinController: found untrusted candidate " 1735c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + result.SSID 1736dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle + " RSSI=" + result.level 1737dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle + " freq=" + result.frequency 1738dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle + " score=" + score); 1739c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle } 1740f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1741f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1742f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1743f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1744c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (untrustedCandidate != null) { 17458639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson // At this point, we have an untrusted network candidate. 17468639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson // Create the new ephemeral configuration and see if we should switch over 1747833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle candidate = 1748833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle mWifiConfigStore.wifiConfigurationFromScanResult(untrustedCandidate); 1749833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle candidate.allowedKeyManagement.set(KeyMgmt.NONE); 1750833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle candidate.ephemeral = true; 1751c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle } 1752c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle } 1753b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle 17541ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle long lastUnwanted = 17551ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle System.currentTimeMillis() 17561ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle - mWifiConfigStore.lastUnwantedNetworkDisconnectTimestamp; 17571ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle if (candidate == null 17581ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle && lastSelectedConfiguration == null 17591ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle && currentConfiguration == null 17601ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle && didBailDueToWeakRssi 17611ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle && (mWifiConfigStore.lastUnwantedNetworkDisconnectTimestamp == 0 1762dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle || lastUnwanted > (1000 * 60 * 60 * 24 * 7)) 17631ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle ) { 17641ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // We are bailing out of autojoin although we are seeing a weak configuration, and 17651ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // - we didn't find another valid candidate 17661ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // - we are not connected 17671ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // - without a user network selection choice 17681ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // - ConnectivityService has not triggered an unwanted network disconnect 17691ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // on this device for a week (hence most likely there is no SIM card or cellular) 17701ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // If all those conditions are met, then boost the RSSI of the weak networks 17711ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // that we are seeing so as we will eventually pick one 17721ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle if (weakRssiBailCount < 10) 17731ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle weakRssiBailCount += 1; 17741ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle } else { 17751ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle if (weakRssiBailCount > 0) 17761ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle weakRssiBailCount -= 1; 17771ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle } 17781ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle 1779931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 1780931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * If candidate is found, check the state of the connection so as 1781931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * to decide if we should be acting on this candidate and switching over 1782931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 1783e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle int networkDelta = compareNetwork(candidate, lastSelectedConfiguration); 1784b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle if (DBG && candidate != null) { 1785b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle String doSwitch = ""; 1786b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle String current = ""; 1787b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle if (networkDelta < 0) { 1788b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle doSwitch = " -> not switching"; 1789b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle } 1790b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle if (currentConfiguration != null) { 17912f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle current = " with current " + currentConfiguration.configKey(); 1792b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle } 1793b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg("attemptAutoJoin networkSwitching candidate " 1794b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle + candidate.configKey() 1795b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + current 1796c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle + " linked=" + (currentConfiguration != null 1797dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle && currentConfiguration.isLinked(candidate)) 1798b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " : delta=" 1799b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + Integer.toString(networkDelta) + " " 1800b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + doSwitch); 1801b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 18024dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 1803931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 1804931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * Ask WifiStateMachine permission to switch : 1805931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * if user is currently streaming voice traffic, 1806931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * then we should not be allowed to switch regardless of the delta 1807931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 180877f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist if (mWifiStateMachine.shouldSwitchNetwork(networkDelta)) { // !!! JNo: Here! 1809b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (mStaStaSupported) { 1810b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle logDbg("mStaStaSupported --> error do nothing now "); 1811b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } else { 1812b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (currentConfiguration != null && currentConfiguration.isLinked(candidate)) { 1813b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle networkSwitchType = AUTO_JOIN_EXTENDED_ROAMING; 1814b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } else { 1815b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle networkSwitchType = AUTO_JOIN_OUT_OF_NETWORK_ROAMING; 1816b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 1817b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (DBG) { 1818b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle logDbg("AutoJoin auto connect with netId " 1819b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle + Integer.toString(candidate.networkId) 1820b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle + " to " + candidate.configKey()); 1821b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 18222451dbcc4f9641df188326215b204b798eb70c46vandwalle if (didOverride) { 18232451dbcc4f9641df188326215b204b798eb70c46vandwalle candidate.numScorerOverrideAndSwitchedNetwork++; 18242451dbcc4f9641df188326215b204b798eb70c46vandwalle } 1825c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle candidate.numAssociation++; 1826e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle mWifiConnectionStatistics.numAutoJoinAttempt++; 18279f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle 18282c9b6297f3cd74780a084634320d03a413a3b779Jeff Davidson if (candidate.ephemeral) { 18292c9b6297f3cd74780a084634320d03a413a3b779Jeff Davidson // We found a new candidate that we are going to connect to, then 18302c9b6297f3cd74780a084634320d03a413a3b779Jeff Davidson // increase its connection count 18312c9b6297f3cd74780a084634320d03a413a3b779Jeff Davidson mWifiConnectionStatistics. 18322c9b6297f3cd74780a084634320d03a413a3b779Jeff Davidson incrementOrAddUntrusted(candidate.SSID, 1, 0); 18332c9b6297f3cd74780a084634320d03a413a3b779Jeff Davidson } 18342c9b6297f3cd74780a084634320d03a413a3b779Jeff Davidson 18352f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle if (candidate.BSSID == null || candidate.BSSID.equals("any")) { 18362f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // First step we selected the configuration we want to connect to 18372f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // Second step: Look for the best Scan result for this configuration 18382f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // TODO this algorithm should really be done in one step 18392f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle String currentBSSID = mWifiStateMachine.getCurrentBSSID(); 1840833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle ScanResult roamCandidate = 1841833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle attemptRoam(null, candidate, mScanResultAutoJoinAge, null); 18422f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle if (roamCandidate != null && currentBSSID != null 18432f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle && currentBSSID.equals(roamCandidate.BSSID)) { 18442f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // Sanity, we were already asociated to that candidate 18452f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle roamCandidate = null; 18462f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle } 18472f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle if (roamCandidate != null && roamCandidate.is5GHz()) { 18482f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // If the configuration hasn't a default BSSID selected, and the best 18492f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // candidate is 5GHZ, then select this candidate so as WifiStateMachine and 18502f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // supplicant will pick it first 18512f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle candidate.autoJoinBSSID = roamCandidate.BSSID; 18522f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle if (VDBG) { 18532f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle logDbg("AutoJoinController: lock to 5GHz " 18542f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle + candidate.autoJoinBSSID 18552f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle + " RSSI=" + roamCandidate.level 18562f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle + " freq=" + roamCandidate.frequency); 18572f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle } 1858448c9536a302c58a79e271b1721c08b8882f800evandwalle } else { 1859448c9536a302c58a79e271b1721c08b8882f800evandwalle // We couldnt find a roam candidate 1860448c9536a302c58a79e271b1721c08b8882f800evandwalle candidate.autoJoinBSSID = "any"; 18619f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle } 18629f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle } 1863448c9536a302c58a79e271b1721c08b8882f800evandwalle mWifiStateMachine.sendMessage(WifiStateMachine.CMD_AUTO_CONNECT, 1864dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle candidate.networkId, networkSwitchType, candidate); 186568fee36dac1dda5c596c00ef33fdbc0962e9ec9fvandwalle found = true; 18664dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 1867b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 18684dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 1869d4c25fd76644d5490700ae69fada4669de5193a1Pierre Vandwalle if (networkSwitchType == AUTO_JOIN_IDLE && !mWifiConfigStore.enableHalBasedPno.get()) { 1870e67ec726c07410073575473c0f50dc737629f5davandwalle String currentBSSID = mWifiStateMachine.getCurrentBSSID(); 1871931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Attempt same WifiConfiguration roaming 1872833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle ScanResult roamCandidate = 1873833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle attemptRoam(null, currentConfiguration, mScanResultAutoJoinAge, currentBSSID); 1874e67ec726c07410073575473c0f50dc737629f5davandwalle if (roamCandidate != null && currentBSSID != null 1875e67ec726c07410073575473c0f50dc737629f5davandwalle && currentBSSID.equals(roamCandidate.BSSID)) { 1876e67ec726c07410073575473c0f50dc737629f5davandwalle roamCandidate = null; 1877e67ec726c07410073575473c0f50dc737629f5davandwalle } 18782f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle if (roamCandidate != null && mWifiStateMachine.shouldSwitchNetwork(999)) { 1879b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (DBG) { 1880b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle logDbg("AutoJoin auto roam with netId " 1881b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle + Integer.toString(currentConfiguration.networkId) 1882b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle + " " + currentConfiguration.configKey() + " to BSSID=" 1883b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle + roamCandidate.BSSID + " freq=" + roamCandidate.frequency 18841ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle + " RSSI=" + roamCandidate.level); 1885b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 1886b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle networkSwitchType = AUTO_JOIN_ROAMING; 1887e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle mWifiConnectionStatistics.numAutoRoamAttempt++; 1888e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle 1889b07da189850a4bfa268f8ab9be7867935eb2ecb5vandwalle mWifiStateMachine.sendMessage(WifiStateMachine.CMD_AUTO_ROAM, 1890dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle currentConfiguration.networkId, 1, roamCandidate); 189168fee36dac1dda5c596c00ef33fdbc0962e9ec9fvandwalle found = true; 1892f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1893f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1894b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (VDBG) logDbg("Done attemptAutoJoin status=" + Integer.toString(networkSwitchType)); 189568fee36dac1dda5c596c00ef33fdbc0962e9ec9fvandwalle return found; 1896f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 189777f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist 189877f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist private void logDenial(String reason, WifiConfiguration config) { 189977f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist if (!DBG) { 190077f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist return; 190177f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist } 190277f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist logDbg(reason + config.toString()); 190377f2b82a2e80af8da52c22d69a76def6d4209757Jan Nordqvist } 1904dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle 1905dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle WifiConfiguration getWifiConfiguration(WifiNative.WifiPnoNetwork network) { 1906dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle if (network.configKey != null) { 1907dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle return mWifiConfigStore.getWifiConfiguration(network.configKey); 1908dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle } 1909dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle return null; 1910dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle } 1911dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle 1912dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle ArrayList<WifiNative.WifiPnoNetwork> getPnoList(WifiConfiguration current) { 1913dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle int size = -1; 1914b0b0cc202b7d7aaad7b3f69d73e9b58ea2968b05Pierre Vandwalle ArrayList<WifiNative.WifiPnoNetwork> list = null; 1915dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle 1916b0b0cc202b7d7aaad7b3f69d73e9b58ea2968b05Pierre Vandwalle if (mWifiConfigStore.mCachedPnoList != null) { 1917b0b0cc202b7d7aaad7b3f69d73e9b58ea2968b05Pierre Vandwalle size = mWifiConfigStore.mCachedPnoList.size(); 1918dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle } 1919b0b0cc202b7d7aaad7b3f69d73e9b58ea2968b05Pierre Vandwalle Log.d(TAG, " get Pno List total size:" + size); 1920dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle 1921dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle if (current != null) { 1922dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle String configKey = current.configKey(); 1923dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle /** 1924dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * If we are currently associated to a WifiConfiguration then include 1925dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle * only those networks that have a higher priority 1926dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle */ 1927dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle list = new ArrayList<WifiNative.WifiPnoNetwork>(); 1928b0b0cc202b7d7aaad7b3f69d73e9b58ea2968b05Pierre Vandwalle for (WifiNative.WifiPnoNetwork network : mWifiConfigStore.mCachedPnoList) { 1929dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle WifiConfiguration config = getWifiConfiguration(network); 1930dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle if (config != null && !configKey.equals(network.configKey)) { 1931dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle int choice = getConnectChoice(config, current); 1932b0b0cc202b7d7aaad7b3f69d73e9b58ea2968b05Pierre Vandwalle if (choice > 0) { 1933b0b0cc202b7d7aaad7b3f69d73e9b58ea2968b05Pierre Vandwalle // config is of higher priority 1934dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle list.add(network); 1935b0b0cc202b7d7aaad7b3f69d73e9b58ea2968b05Pierre Vandwalle network.rssi_threshold = mWifiConfigStore.thresholdGoodRssi24.get(); 1936dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle } 1937dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle } 1938dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle } 1939dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle } else { 1940b0b0cc202b7d7aaad7b3f69d73e9b58ea2968b05Pierre Vandwalle list = mWifiConfigStore.mCachedPnoList; 1941dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle } 1942dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle return list; 1943dd490cf1df37b70a8625dc4ec8e712f740dd1e4aPierre Vandwalle } 1944f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle} 1945f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1946