WifiAutoJoinController.java revision 68fee36dac1dda5c596c00ef33fdbc0962e9ec9f
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; 23c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalleimport android.net.wifi.*; 248639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidsonimport android.net.wifi.WifiConfiguration.KeyMgmt; 25c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalleimport android.text.TextUtils; 26f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.util.Log; 27f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 280c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalleimport java.util.ArrayList; 29f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport java.util.Iterator; 30f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport java.util.HashMap; 31f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport java.util.List; 32f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 33f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle/** 34f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * AutoJoin controller is responsible for WiFi Connect decision 35f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 36f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * It runs in the thread context of WifiStateMachine 37f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 38f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle */ 39f22d23092ab37286a5ef9d257d5bb32c421d2669vandwallepublic class WifiAutoJoinController { 40f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 41f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private Context mContext; 42f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiStateMachine mWifiStateMachine; 43f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiConfigStore mWifiConfigStore; 44f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiNative mWifiNative; 45f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 46f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private NetworkScoreManager scoreManager; 47f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiNetworkScoreCache mNetworkScoreCache; 48f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 49f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private static final String TAG = "WifiAutoJoinController "; 50ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle private static boolean DBG = false; 51ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle private static boolean VDBG = false; 52f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private static final boolean mStaStaSupported = false; 53f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 54c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle public static int mScanResultMaximumAge = 40000; /* milliseconds unit */ 55c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 56453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle private String mCurrentConfigurationKey = null; //used by autojoin 57f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 58f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private HashMap<String, ScanResult> scanResultCache = 59f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle new HashMap<String, ScanResult>(); 60f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 61c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle private WifiConnectionStatistics mWifiConnectionStatistics; 62c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 638639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson /** Whether to allow connections to untrusted networks. */ 648639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson private boolean mAllowUntrustedConnections = false; 658639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson 66c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle /* for debug purpose only : the untrusted SSID we would be connected to if we had VPN */ 67c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle String lastUntrustedBSSID = null; 68c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 69c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle /* For debug purpose only: if the scored override a score */ 70c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle boolean didOverride = false; 71c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle 72931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Lose the non-auth failure blacklisting after 8 hours 734dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle private final static long loseBlackListHardMilli = 1000 * 60 * 60 * 8; 74931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Lose some temporary blacklisting after 30 minutes 754dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle private final static long loseBlackListSoftMilli = 1000 * 60 * 30; 7627355a942653264388e909a4276196ee63e57811vandwalle 77b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle public static final int AUTO_JOIN_IDLE = 0; 78b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle public static final int AUTO_JOIN_ROAMING = 1; 79b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle public static final int AUTO_JOIN_EXTENDED_ROAMING = 2; 80b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle public static final int AUTO_JOIN_OUT_OF_NETWORK_ROAMING = 3; 81b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle 8297b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle public static final int HIGH_THRESHOLD_MODIFIER = 5; 8397b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle 841ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // Below are AutoJoin wide parameters indicating if we should be aggressive before joining 851ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // weak network. Note that we cannot join weak network that are going to be marked as unanted by 861ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // ConnectivityService because this will trigger link flapping. 871ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle /** 881ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle * There was a non-blacklisted configuration that we bailed from because of a weak signal 891ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle */ 901ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle boolean didBailDueToWeakRssi = false; 911ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle /** 921ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle * number of time we consecutively bailed out of an eligible network because its signal 931ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle * was too weak 941ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle */ 951ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle int weakRssiBailCount = 0; 961ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle 97f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiAutoJoinController(Context c, WifiStateMachine w, WifiConfigStore s, 98c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle WifiConnectionStatistics st, WifiNative n) { 99f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mContext = c; 100f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiStateMachine = w; 101f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiConfigStore = s; 102f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiNative = n; 103f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mNetworkScoreCache = null; 104c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle mWifiConnectionStatistics = st; 10521bc54cb37a0085b1c909cb4d55ebb12a2facefbvandwalle scoreManager = 10621bc54cb37a0085b1c909cb4d55ebb12a2facefbvandwalle (NetworkScoreManager) mContext.getSystemService(Context.NETWORK_SCORE_SERVICE); 107f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (scoreManager == null) 108f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("Registered scoreManager NULL " + " service " + Context.NETWORK_SCORE_SERVICE); 109f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 110f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (scoreManager != null) { 111f13817203179f41620514718c8668ae7e418f8afJeff Davidson mNetworkScoreCache = new WifiNetworkScoreCache(mContext); 112f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle scoreManager.registerNetworkScoreCache(NetworkKey.TYPE_WIFI, mNetworkScoreCache); 113f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 114f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("No network score service: Couldnt register as a WiFi score Manager, type=" 115f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(NetworkKey.TYPE_WIFI) 116f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + " service " + Context.NETWORK_SCORE_SERVICE); 117f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mNetworkScoreCache = null; 118f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 119f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 120f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 121ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle void enableVerboseLogging(int verbose) { 122ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (verbose > 0 ) { 123abde872adced15dfb6781fb71959453d963326dbYuhao Zheng DBG = true; 124ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle VDBG = true; 125ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } else { 126abde872adced15dfb6781fb71959453d963326dbYuhao Zheng DBG = false; 127ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle VDBG = false; 128ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 129ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 130ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle 131931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 132931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * Flush out scan results older than mScanResultMaximumAge 133ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * 134931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 135f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private void ageScanResultsOut(int delay) { 136f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (delay <= 0) { 137931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle delay = mScanResultMaximumAge; // Something sane 138f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 139b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle long milli = System.currentTimeMillis(); 140f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 141f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("ageScanResultsOut delay " + Integer.valueOf(delay) + " size " 142f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.valueOf(scanResultCache.size()) + " now " + Long.valueOf(milli)); 143f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 144f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 145f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle Iterator<HashMap.Entry<String,ScanResult>> iter = scanResultCache.entrySet().iterator(); 146f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle while (iter.hasNext()) { 147f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle HashMap.Entry<String,ScanResult> entry = iter.next(); 148f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ScanResult result = entry.getValue(); 149f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 150f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ((result.seen + delay) < milli) { 151f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle iter.remove(); 152f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 153f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 154f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 155f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 156be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle int addToScanCache(List<ScanResult> scanList) { 157be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle int numScanResultsKnown = 0; // Record number of scan results we knew about 158be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle WifiConfiguration associatedConfig = null; 1597b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle boolean didAssociate = false; 160f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1610c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle ArrayList<NetworkKey> unknownScanResults = new ArrayList<NetworkKey>(); 1620c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle 163f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for(ScanResult result: scanList) { 1641fcf3c6d2b9ed65573e1e7c55fc5a30ebd364c4fYuhao Zheng if (result.SSID == null) continue; 165c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 166c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Make sure we record the last time we saw this result 167f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle result.seen = System.currentTimeMillis(); 168f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 169c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Fetch the previous instance for this result 170f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ScanResult sr = scanResultCache.get(result.BSSID); 171f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (sr != null) { 172931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // If there was a previous cache result for this BSSID, average the RSSI values 173c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle result.averageRssi(sr.level, sr.seen, mScanResultMaximumAge); 174f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 175c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Remove the previous Scan Result - this is not necessary 176f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle scanResultCache.remove(result.BSSID); 177e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle } 178e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle 179e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle if (!mNetworkScoreCache.isScoredNetwork(result)) { 180e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle WifiKey wkey; 181e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle // Quoted SSIDs are the only one valid at this stage 182e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle try { 183e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle wkey = new WifiKey("\"" + result.SSID + "\"", result.BSSID); 184e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle } catch (IllegalArgumentException e) { 185e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle logDbg("AutoJoinController: received badly encoded SSID=[" + result.SSID + 186e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle "] ->skipping this network"); 187e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle wkey = null; 188e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle } 189e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle if (wkey != null) { 190e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle NetworkKey nkey = new NetworkKey(wkey); 191e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle //if we don't know this scan result then request a score from the scorer 192e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle unknownScanResults.add(nkey); 193e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle } 194e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle if (VDBG) { 1957b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle String cap = ""; 1967b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle if (result.capabilities != null) 1977b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle cap = result.capabilities; 198e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle logDbg(result.SSID + " " + result.BSSID + " rssi=" 1997b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle + result.level + " cap " + cap + " is not scored"); 200e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle } 2010c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle } else { 202e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle if (VDBG) { 2037b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle String cap = ""; 2047b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle if (result.capabilities != null) 2057b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle cap = result.capabilities; 206e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle int score = mNetworkScoreCache.getNetworkScore(result); 207e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle logDbg(result.SSID + " " + result.BSSID + " rssi=" 2087b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle + result.level + " cap " + cap + " is scored : " + score); 2090c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle } 210f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 211f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 212e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // scanResultCache.put(result.BSSID, new ScanResult(result)); 213e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle scanResultCache.put(result.BSSID, result); 214be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle // Add this BSSID to the scanResultCache of a Saved WifiConfiguration 2157b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle didAssociate = mWifiConfigStore.updateSavedNetworkHistory(result); 216f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 217be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle // If not successful, try to associate this BSSID to an existing Saved WifiConfiguration 2187b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle if (!didAssociate) { 219be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle // We couldn't associate the scan result to a Saved WifiConfiguration 220c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Hence it is untrusted 221c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle result.untrusted = true; 222f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle associatedConfig = mWifiConfigStore.associateWithConfiguration(result); 2231fcf3c6d2b9ed65573e1e7c55fc5a30ebd364c4fYuhao Zheng if (associatedConfig != null && associatedConfig.SSID != null) { 224f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 225f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("addToScanCache save associated config " 2267b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle + associatedConfig.SSID + " with " + result.SSID); 227f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 228be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle mWifiStateMachine.sendMessage( 229be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle WifiStateMachine.CMD_AUTO_SAVE_NETWORK, associatedConfig); 2307b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle didAssociate = true; 231f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 2320d616ef3bf635dff8722e064c0be842676390ed8vandwalle } else { 2330d616ef3bf635dff8722e064c0be842676390ed8vandwalle // If the scan result has been blacklisted fir 18 hours -> unblacklist 2340d616ef3bf635dff8722e064c0be842676390ed8vandwalle long now = System.currentTimeMillis(); 2350d616ef3bf635dff8722e064c0be842676390ed8vandwalle if ((now - result.blackListTimestamp) > loseBlackListHardMilli) { 2360d616ef3bf635dff8722e064c0be842676390ed8vandwalle result.setAutoJoinStatus(ScanResult.ENABLED); 2370d616ef3bf635dff8722e064c0be842676390ed8vandwalle } 238f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 2397b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle if (didAssociate) { 240be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle numScanResultsKnown++; 241a0708b09ad17b086c008ab100aec7143d7613c80vandwalle result.isAutoJoinCandidate ++; 242a0708b09ad17b086c008ab100aec7143d7613c80vandwalle } else { 243a0708b09ad17b086c008ab100aec7143d7613c80vandwalle result.isAutoJoinCandidate = 0; 244be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle } 245f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 2460c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle 2470c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle if (unknownScanResults.size() != 0) { 2480c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle NetworkKey[] newKeys = 2490c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle unknownScanResults.toArray(new NetworkKey[unknownScanResults.size()]); 250931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Kick the score manager, we will get updated scores asynchronously 2510c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle scoreManager.requestScores(newKeys); 2520c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle } 253be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle return numScanResultsKnown; 254f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 255f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 256f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void logDbg(String message) { 2570888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle logDbg(message, false); 258ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 259ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle 260ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle void logDbg(String message, boolean stackTrace) { 261ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (stackTrace) { 2622f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle Log.e(TAG, message + " stack:" 263ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + Thread.currentThread().getStackTrace()[2].getMethodName() + " - " 264ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + Thread.currentThread().getStackTrace()[3].getMethodName() + " - " 265ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + Thread.currentThread().getStackTrace()[4].getMethodName() + " - " 266ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + Thread.currentThread().getStackTrace()[5].getMethodName()); 267ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } else { 2682f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle Log.e(TAG, message); 269ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 270f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 271f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 272931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Called directly from WifiStateMachine 273be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle int newSupplicantResults(boolean doAutoJoin) { 274be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle int numScanResultsKnown; 275e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle List<ScanResult> scanList = mWifiStateMachine.getScanResultsListNoCopyUnsync(); 276be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle numScanResultsKnown = addToScanCache(scanList); 277f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ageScanResultsOut(mScanResultMaximumAge); 278be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle if (DBG) { 279be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle logDbg("newSupplicantResults size=" + Integer.valueOf(scanResultCache.size()) 2802f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle + " known=" + numScanResultsKnown + " " 2819f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle + doAutoJoin); 282be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle } 2837806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle if (doAutoJoin) { 2847806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle attemptAutoJoin(); 2857806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle } 286005c1ef113192f898499a407dd266393a8d6b076vandwalle mWifiConfigStore.writeKnownNetworkHistory(false); 287be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle return numScanResultsKnown; 288f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 289f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 290f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 291931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 292931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * Not used at the moment 293f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * should be a call back from WifiScanner HAL ?? 294f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * this function is not hooked and working yet, it will receive scan results from WifiScanners 295f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * with the list of IEs,then populate the capabilities by parsing the IEs and inject the scan 296f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * results as normal. 297f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle */ 298f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void newHalScanResults() { 299f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle List<ScanResult> scanList = null;//mWifiScanner.syncGetScanResultsList(); 300f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle String akm = WifiParser.parse_akm(null, null); 301f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg(akm); 302f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle addToScanCache(scanList); 303f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ageScanResultsOut(0); 304f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle attemptAutoJoin(); 305005c1ef113192f898499a407dd266393a8d6b076vandwalle mWifiConfigStore.writeKnownNetworkHistory(false); 306f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 307f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 308931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 309931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * network link quality changed, called directly from WifiTrafficPoller, 310931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * or by listening to Link Quality intent 311931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 312f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void linkQualitySignificantChange() { 313f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle attemptAutoJoin(); 314f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 315f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 316931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 317f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * compare a WifiConfiguration against the current network, return a delta score 318f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * If not associated, and the candidate will always be better 319f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * For instance if the candidate is a home network versus an unknown public wifi, 320f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * the delta will be infinite, else compare Kepler scores etc… 321b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle * Negatve return values from this functions are meaningless per se, just trying to 322b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle * keep them distinct for debug purpose (i.e. -1, -2 etc...) 323931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 324e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle private int compareNetwork(WifiConfiguration candidate, 325e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle String lastSelectedConfiguration) { 326b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (candidate == null) 327b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle return -3; 328b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle 329f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration currentNetwork = mWifiStateMachine.getCurrentWifiConfiguration(); 330b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle if (currentNetwork == null) { 331c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // Return any absurdly high score, if we are not connected there is no current 332c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // network to... 333b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle return 1000; 334b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle } 335f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 336f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (candidate.configKey(true).equals(currentNetwork.configKey(true))) { 337b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle return -2; 338f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 339f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 340b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle if (DBG) { 341e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle logDbg("compareNetwork will compare " + candidate.configKey() 342e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " with current " + currentNetwork.configKey()); 343b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle } 344c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle int order = compareWifiConfigurationsTop(currentNetwork, candidate); 345e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle 346e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // The lastSelectedConfiguration is the configuration the user has manually selected 347e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // thru WifiPicker, or that a 3rd party app asked us to connect to via the 348e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // enableNetwork with disableOthers=true WifiManager API 349e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // As this is a direct user choice, we strongly prefer this configuration, 350e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // hence give +/-100 351e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle if ((lastSelectedConfiguration != null) 352e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle && currentNetwork.configKey().equals(lastSelectedConfiguration)) { 353e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // currentNetwork is the last selected configuration, 354e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // so keep it above connect choices (+/-60) and 355e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // above RSSI/scorer based selection of linked configuration (+/- 50) 356e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // by reducing order by -100 357e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle order = order - 100; 358e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle if (VDBG) { 359e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle logDbg(" ...and prefers -100 " + currentNetwork.configKey() 360e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " over " + candidate.configKey() 361e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " because it is the last selected -> " 362e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + Integer.toString(order)); 363e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle } 364e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle } else if ((lastSelectedConfiguration != null) 365e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle && candidate.configKey().equals(lastSelectedConfiguration)) { 366e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // candidate is the last selected configuration, 367e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // so keep it above connect choices (+/-60) and 368e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // above RSSI/scorer based selection of linked configuration (+/- 50) 369e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // by increasing order by +100 370e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle order = order + 100; 371e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle if (VDBG) { 372e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle logDbg(" ...and prefers +100 " + candidate.configKey() 373e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " over " + currentNetwork.configKey() 374e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " because it is the last selected -> " 375e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + Integer.toString(order)); 376e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle } 377e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle } 378e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle 379ede507649471f1113e9e1919812115ca5a6bc0c8vandwalle return order; 380f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 381f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 382ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle /** 383ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * update the network history fields fo that configuration 384ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * - if userTriggered, we mark the configuration as "non selfAdded" since the user has seen it 385ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * and took over management 386ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * - if it is a "connect", remember which network were there at the point of the connect, so 387ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * as those networks get a relative lower score than the selected configuration 38862f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle * 389ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * @param netId 390ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * @param userTriggered : if the update come from WiFiManager 391ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * @param connect : if the update includes a connect 392931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 39362f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle public void updateConfigurationHistory(int netId, boolean userTriggered, boolean connect) { 394f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration selected = mWifiConfigStore.getWifiConfiguration(netId); 395f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (selected == null) { 396c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle logDbg("updateConfigurationHistory nid=" + netId + " no selected configuration!"); 397f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return; 398f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 399f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 400e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle if (selected.SSID == null) { 401c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle logDbg("updateConfigurationHistory nid=" + netId + 402c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle " no SSID in selected configuration!"); 403e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle return; 404e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle } 405e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle 40662f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (userTriggered) { 407931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Reenable autojoin for this network, 40862f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle // since the user want to connect to this configuration 40927355a942653264388e909a4276196ee63e57811vandwalle selected.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 41062f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle selected.selfAdded = false; 411e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle selected.dirty = true; 41262f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 413f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 414992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle if (DBG && userTriggered) { 415f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (selected.connectChoices != null) { 416ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory will update " 417f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(netId) + " now: " 418992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle + Integer.toString(selected.connectChoices.size()) 419992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle + " uid=" + Integer.toString(selected.creatorUid), true); 420f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 421ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory will update " 422992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle + Integer.toString(netId) 423992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle + " uid=" + Integer.toString(selected.creatorUid), true); 424f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 425f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 426f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 427ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (connect && userTriggered) { 428ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle boolean found = false; 4292451dbcc4f9641df188326215b204b798eb70c46vandwalle int choice = 0; 430c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle int size = 0; 4319f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle 4329f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle // Reset the triggered disabled count, because user wanted to connect to this 4339f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle // configuration, and we were not. 4349f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle selected.numUserTriggeredWifiDisableLowRSSI = 0; 4359f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle selected.numUserTriggeredWifiDisableBadRSSI = 0; 4369f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle selected.numUserTriggeredWifiDisableNotHighRSSI = 0; 4379f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle selected.numUserTriggeredJoinAttempts++; 4389f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle 43962f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle List<WifiConfiguration> networks = 44062f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle mWifiConfigStore.getRecentConfiguredNetworks(12000, false); 441c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (networks != null) size = networks.size(); 442c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle logDbg("updateConfigurationHistory found " + size + " networks"); 44362f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (networks != null) { 44462f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle for (WifiConfiguration config : networks) { 445992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle if (DBG) { 446992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle logDbg("updateConfigurationHistory got " + config.SSID + " nid=" 447992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle + Integer.toString(config.networkId)); 448992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle } 449f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 45062f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (selected.configKey(true).equals(config.configKey(true))) { 451ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle found = true; 45262f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle continue; 45362f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 454f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 4552451dbcc4f9641df188326215b204b798eb70c46vandwalle // Compare RSSI values so as to evaluate the strength of the user preference 4562451dbcc4f9641df188326215b204b798eb70c46vandwalle int order = compareWifiConfigurationsRSSI(config, selected, null); 4572451dbcc4f9641df188326215b204b798eb70c46vandwalle 4582451dbcc4f9641df188326215b204b798eb70c46vandwalle if (order < -30) { 4592451dbcc4f9641df188326215b204b798eb70c46vandwalle // Selected configuration is worse than the visible configuration 4602451dbcc4f9641df188326215b204b798eb70c46vandwalle // hence register a strong choice so as autojoin cannot override this 4612451dbcc4f9641df188326215b204b798eb70c46vandwalle // for instance, the user has select a network 4622451dbcc4f9641df188326215b204b798eb70c46vandwalle // with 1 bar over a network with 3 bars... 4632451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = 60; 4642451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if (order < -20) { 4652451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = 50; 4662451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if (order < -10) { 4672451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = 40; 4682f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle } else if (order < 20) { 4692451dbcc4f9641df188326215b204b798eb70c46vandwalle // Selected configuration is about same or has a slightly better RSSI 4702451dbcc4f9641df188326215b204b798eb70c46vandwalle // hence register a weaker choice, here a difference of at least +/-30 in 4712451dbcc4f9641df188326215b204b798eb70c46vandwalle // RSSI comparison triggered by autoJoin will override the choice 4722451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = 30; 4732f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle } else { 4742451dbcc4f9641df188326215b204b798eb70c46vandwalle // Selected configuration is better than the visible configuration 4752451dbcc4f9641df188326215b204b798eb70c46vandwalle // hence we do not know if the user prefers this configuration strongly 4762451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = 20; 47762f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 478f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 479931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // The selected configuration was preferred over a recently seen config 480931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // hence remember the user's choice: 481931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // add the recently seen config to the selected's connectChoices array 482ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle 483ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (selected.connectChoices == null) { 484ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle selected.connectChoices = new HashMap<String, Integer>(); 485ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 486ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle 487ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory add a choice " + selected.configKey(true) 4880888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle + " over " + config.configKey(true) 4892451dbcc4f9641df188326215b204b798eb70c46vandwalle + " choice " + Integer.toString(choice)); 490cf5b8eb8a08c45bd4a82f1f4bb789c8a1b08744fvandwalle 4912451dbcc4f9641df188326215b204b798eb70c46vandwalle Integer currentChoice = selected.connectChoices.get(config.configKey(true)); 4922f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle if (currentChoice != null) { 4932f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // User has made this choice multiple time in a row, so bump up a lot 4942f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle choice += currentChoice.intValue(); 4952451dbcc4f9641df188326215b204b798eb70c46vandwalle } 4962f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // Add the visible config to the selected's connect choice list 4972f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle selected.connectChoices.put(config.configKey(true), choice); 498f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 49962f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (config.connectChoices != null) { 500ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (VDBG) { 501ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory will remove " 50262f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle + selected.configKey(true) + " from " + config.configKey(true)); 503ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 504931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Remove the selected from the recently seen config's connectChoice list 50562f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle config.connectChoices.remove(selected.configKey(true)); 5060888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle 5070888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle if (selected.linkedConfigurations != null) { 508931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Remove the selected's linked configuration from the 509931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // recently seen config's connectChoice list 5100888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle for (String key : selected.linkedConfigurations.keySet()) { 5110888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle config.connectChoices.remove(key); 5120888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle } 5130888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle } 51462f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 515ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 516ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (found == false) { 5172451dbcc4f9641df188326215b204b798eb70c46vandwalle // We haven't found the configuration that the user just selected in our 5182451dbcc4f9641df188326215b204b798eb70c46vandwalle // scan cache. 5192451dbcc4f9641df188326215b204b798eb70c46vandwalle // In that case we will need a new scan before attempting to connect to this 5202451dbcc4f9641df188326215b204b798eb70c46vandwalle // configuration anyhow and thus we can process the scan results then. 521ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory try to connect to an old network!! : " 522ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + selected.configKey()); 52362f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 524f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 52562f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (selected.connectChoices != null) { 52662f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (VDBG) 527ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory " + Integer.toString(netId) 52862f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle + " now: " + Integer.toString(selected.connectChoices.size())); 52962f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 530f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 531f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 532992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle 533931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // TODO: write only if something changed 534992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle if (userTriggered || connect) { 535005c1ef113192f898499a407dd266393a8d6b076vandwalle mWifiConfigStore.writeKnownNetworkHistory(false); 536992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle } 537f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 538f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 5392451dbcc4f9641df188326215b204b798eb70c46vandwalle int getConnectChoice(WifiConfiguration source, WifiConfiguration target) { 5402451dbcc4f9641df188326215b204b798eb70c46vandwalle Integer choice = null; 5412451dbcc4f9641df188326215b204b798eb70c46vandwalle if (source == null || target == null) { 5422451dbcc4f9641df188326215b204b798eb70c46vandwalle return 0; 543f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 544f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 5452451dbcc4f9641df188326215b204b798eb70c46vandwalle if (source.connectChoices != null 5462451dbcc4f9641df188326215b204b798eb70c46vandwalle && source.connectChoices.containsKey(target.configKey(true))) { 5472451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = source.connectChoices.get(target.configKey(true)); 5482451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if (source.linkedConfigurations != null) { 549f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for (String key : source.linkedConfigurations.keySet()) { 550f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(key); 551f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config != null) { 552f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config.connectChoices != null) { 5532451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = config.connectChoices.get(target.configKey(true)); 554f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 555f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 556f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 5572451dbcc4f9641df188326215b204b798eb70c46vandwalle } 5582451dbcc4f9641df188326215b204b798eb70c46vandwalle 5592451dbcc4f9641df188326215b204b798eb70c46vandwalle if (choice == null) { 5602451dbcc4f9641df188326215b204b798eb70c46vandwalle //We didn't find the connect choice 5612451dbcc4f9641df188326215b204b798eb70c46vandwalle return 0; 5622451dbcc4f9641df188326215b204b798eb70c46vandwalle } else { 5632451dbcc4f9641df188326215b204b798eb70c46vandwalle if (choice.intValue() < 0) { 5642451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = 20; // Compatibility with older files 5652451dbcc4f9641df188326215b204b798eb70c46vandwalle } 5662451dbcc4f9641df188326215b204b798eb70c46vandwalle return choice.intValue(); 5672451dbcc4f9641df188326215b204b798eb70c46vandwalle } 5682451dbcc4f9641df188326215b204b798eb70c46vandwalle } 5692451dbcc4f9641df188326215b204b798eb70c46vandwalle 5702451dbcc4f9641df188326215b204b798eb70c46vandwalle 5719f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle int getScoreFromVisibility(WifiConfiguration.Visibility visibility, int rssiBoost, String dbg) { 5722451dbcc4f9641df188326215b204b798eb70c46vandwalle int rssiBoost5 = 0; 5732451dbcc4f9641df188326215b204b798eb70c46vandwalle int score = 0; 5744dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 5752451dbcc4f9641df188326215b204b798eb70c46vandwalle /** 5762451dbcc4f9641df188326215b204b798eb70c46vandwalle * Boost RSSI value of 5GHz bands iff the base value is better than threshold 5772451dbcc4f9641df188326215b204b798eb70c46vandwalle * This implements band preference where we prefer 5GHz if RSSI5 is good enough, whereas 5782451dbcc4f9641df188326215b204b798eb70c46vandwalle * we prefer 2.4GHz otherwise. 5792451dbcc4f9641df188326215b204b798eb70c46vandwalle * Note that 2.4GHz doesn't need a boost since at equal power the RSSI is typically 580e67ec726c07410073575473c0f50dc737629f5davandwalle * at least 6-10 dB higher 5812451dbcc4f9641df188326215b204b798eb70c46vandwalle */ 5829f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle rssiBoost5 = rssiBoostFrom5GHzRssi(visibility.rssi5, dbg+"->"); 5832451dbcc4f9641df188326215b204b798eb70c46vandwalle 5842451dbcc4f9641df188326215b204b798eb70c46vandwalle // Select which band to use so as to score a 5852451dbcc4f9641df188326215b204b798eb70c46vandwalle if (visibility.rssi5 + rssiBoost5 > visibility.rssi24) { 5862451dbcc4f9641df188326215b204b798eb70c46vandwalle // Prefer a's 5GHz 5872451dbcc4f9641df188326215b204b798eb70c46vandwalle score = visibility.rssi5 + rssiBoost5 + rssiBoost; 5882451dbcc4f9641df188326215b204b798eb70c46vandwalle } else { 5892451dbcc4f9641df188326215b204b798eb70c46vandwalle // Prefer a's 2.4GHz 5902451dbcc4f9641df188326215b204b798eb70c46vandwalle score = visibility.rssi24 + rssiBoost; 591f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 5922451dbcc4f9641df188326215b204b798eb70c46vandwalle 5932451dbcc4f9641df188326215b204b798eb70c46vandwalle return score; 594f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 595f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 5962451dbcc4f9641df188326215b204b798eb70c46vandwalle // Compare WifiConfiguration by RSSI, and return a comparison value in the range [-50, +50] 5972451dbcc4f9641df188326215b204b798eb70c46vandwalle // The result represents "approximately" an RSSI difference measured in dBM 5982451dbcc4f9641df188326215b204b798eb70c46vandwalle // Adjusted with various parameters: 5992451dbcc4f9641df188326215b204b798eb70c46vandwalle // +) current network gets a +15 boost 6002451dbcc4f9641df188326215b204b798eb70c46vandwalle // +) 5GHz signal, if they are strong enough, get a +15 or +25 boost, representing the 6012451dbcc4f9641df188326215b204b798eb70c46vandwalle // fact that at short range we prefer 5GHz band as it is cleaner of interference and 6022451dbcc4f9641df188326215b204b798eb70c46vandwalle // provides for wider channels 6032451dbcc4f9641df188326215b204b798eb70c46vandwalle int compareWifiConfigurationsRSSI(WifiConfiguration a, WifiConfiguration b, 6042451dbcc4f9641df188326215b204b798eb70c46vandwalle String currentConfiguration) { 605f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int order = 0; 6062451dbcc4f9641df188326215b204b798eb70c46vandwalle 6072451dbcc4f9641df188326215b204b798eb70c46vandwalle // Boost used so as to favor current config 6082451dbcc4f9641df188326215b204b798eb70c46vandwalle int aRssiBoost = 0; 6092451dbcc4f9641df188326215b204b798eb70c46vandwalle int bRssiBoost = 0; 6102451dbcc4f9641df188326215b204b798eb70c46vandwalle 6112451dbcc4f9641df188326215b204b798eb70c46vandwalle int scoreA; 6122451dbcc4f9641df188326215b204b798eb70c46vandwalle int scoreB; 6132451dbcc4f9641df188326215b204b798eb70c46vandwalle 6142451dbcc4f9641df188326215b204b798eb70c46vandwalle // Retrieve the visibility 615f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration.Visibility astatus = a.visibility; 616f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration.Visibility bstatus = b.visibility; 617f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (astatus == null || bstatus == null) { 6182451dbcc4f9641df188326215b204b798eb70c46vandwalle // Error visibility wasn't set 619b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations NULL band status!"); 620f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return 0; 621f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 6222451dbcc4f9641df188326215b204b798eb70c46vandwalle 6232451dbcc4f9641df188326215b204b798eb70c46vandwalle // Apply Hysteresis, boost RSSI of current configuration 6242451dbcc4f9641df188326215b204b798eb70c46vandwalle if (null != currentConfiguration) { 6252451dbcc4f9641df188326215b204b798eb70c46vandwalle if (a.configKey().equals(currentConfiguration)) { 626b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle aRssiBoost = +10; 6272451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if (b.configKey().equals(currentConfiguration)) { 628b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle bRssiBoost = +10; 6292451dbcc4f9641df188326215b204b798eb70c46vandwalle } 630b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle 631b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle 6322451dbcc4f9641df188326215b204b798eb70c46vandwalle } 6332451dbcc4f9641df188326215b204b798eb70c46vandwalle 6342451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 635b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurationsRSSI: " + a.configKey() 636c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + " " + Integer.toString(astatus.rssi24) 637c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + "," + Integer.toString(astatus.rssi5) 6382451dbcc4f9641df188326215b204b798eb70c46vandwalle + " boost=" + Integer.toString(aRssiBoost) 639c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + " " + b.configKey() + " " 640c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + Integer.toString(bstatus.rssi24) + "," 641c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + Integer.toString(bstatus.rssi5) 6422451dbcc4f9641df188326215b204b798eb70c46vandwalle + " boost=" + Integer.toString(bRssiBoost) 6432451dbcc4f9641df188326215b204b798eb70c46vandwalle ); 644f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 6452451dbcc4f9641df188326215b204b798eb70c46vandwalle 6469f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle scoreA = getScoreFromVisibility(astatus, aRssiBoost, a.configKey()); 6479f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle scoreB = getScoreFromVisibility(bstatus, bRssiBoost, b.configKey()); 6482451dbcc4f9641df188326215b204b798eb70c46vandwalle 6492451dbcc4f9641df188326215b204b798eb70c46vandwalle // Compare a and b 6502451dbcc4f9641df188326215b204b798eb70c46vandwalle // If a score is higher then a > b and the order is descending (negative) 6512451dbcc4f9641df188326215b204b798eb70c46vandwalle // If b score is higher then a < b and the order is ascending (positive) 6522451dbcc4f9641df188326215b204b798eb70c46vandwalle order = scoreB - scoreA; 6532451dbcc4f9641df188326215b204b798eb70c46vandwalle 6542451dbcc4f9641df188326215b204b798eb70c46vandwalle // Normalize the order to [-50, +50] 6552451dbcc4f9641df188326215b204b798eb70c46vandwalle if (order > 50) order = 50; 6562451dbcc4f9641df188326215b204b798eb70c46vandwalle else if (order < -50) order = -50; 6572451dbcc4f9641df188326215b204b798eb70c46vandwalle 6582451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 6592451dbcc4f9641df188326215b204b798eb70c46vandwalle String prefer = " = "; 6602451dbcc4f9641df188326215b204b798eb70c46vandwalle if (order > 0) { 6612451dbcc4f9641df188326215b204b798eb70c46vandwalle prefer = " < "; // Ascending 6622451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if (order < 0) { 6632451dbcc4f9641df188326215b204b798eb70c46vandwalle prefer = " > "; // Descending 6642451dbcc4f9641df188326215b204b798eb70c46vandwalle } 665b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurationsRSSI " + a.configKey() 6662451dbcc4f9641df188326215b204b798eb70c46vandwalle + " rssi=(" + a.visibility.rssi24 6672451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + a.visibility.rssi5 6682451dbcc4f9641df188326215b204b798eb70c46vandwalle + ") num=(" + a.visibility.num24 6692451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + a.visibility.num5 + ")" 670e67ec726c07410073575473c0f50dc737629f5davandwalle + " scorea=" + scoreA 6712451dbcc4f9641df188326215b204b798eb70c46vandwalle + prefer + b.configKey() 6722451dbcc4f9641df188326215b204b798eb70c46vandwalle + " rssi=(" + b.visibility.rssi24 6732451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + b.visibility.rssi5 6742451dbcc4f9641df188326215b204b798eb70c46vandwalle + ") num=(" + b.visibility.num24 6752451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + b.visibility.num5 + ")" 676e67ec726c07410073575473c0f50dc737629f5davandwalle + " scoreb=" + scoreB 6772451dbcc4f9641df188326215b204b798eb70c46vandwalle + " -> " + order); 6782451dbcc4f9641df188326215b204b798eb70c46vandwalle } 6792451dbcc4f9641df188326215b204b798eb70c46vandwalle 680f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return order; 681f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 682f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 6834dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 6842451dbcc4f9641df188326215b204b798eb70c46vandwalle int compareWifiConfigurationsWithScorer(WifiConfiguration a, WifiConfiguration b) { 6852451dbcc4f9641df188326215b204b798eb70c46vandwalle 68681c9ea6c343bc7f8d87095237e59844a974d0b70Jeff Davidson boolean aIsActive = false; 68781c9ea6c343bc7f8d87095237e59844a974d0b70Jeff Davidson boolean bIsActive = false; 6882451dbcc4f9641df188326215b204b798eb70c46vandwalle 6892451dbcc4f9641df188326215b204b798eb70c46vandwalle // Apply Hysteresis : boost RSSI of current configuration before 6902451dbcc4f9641df188326215b204b798eb70c46vandwalle // looking up the score 6912451dbcc4f9641df188326215b204b798eb70c46vandwalle if (null != mCurrentConfigurationKey) { 6922451dbcc4f9641df188326215b204b798eb70c46vandwalle if (a.configKey().equals(mCurrentConfigurationKey)) { 69381c9ea6c343bc7f8d87095237e59844a974d0b70Jeff Davidson aIsActive = true; 6942451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if (b.configKey().equals(mCurrentConfigurationKey)) { 69581c9ea6c343bc7f8d87095237e59844a974d0b70Jeff Davidson bIsActive = true; 6962451dbcc4f9641df188326215b204b798eb70c46vandwalle } 6972451dbcc4f9641df188326215b204b798eb70c46vandwalle } 69881c9ea6c343bc7f8d87095237e59844a974d0b70Jeff Davidson int scoreA = getConfigNetworkScore(a, 3000, aIsActive); 69981c9ea6c343bc7f8d87095237e59844a974d0b70Jeff Davidson int scoreB = getConfigNetworkScore(b, 3000, bIsActive); 7002451dbcc4f9641df188326215b204b798eb70c46vandwalle 7012451dbcc4f9641df188326215b204b798eb70c46vandwalle // Both configurations need to have a score for the scorer to be used 7022451dbcc4f9641df188326215b204b798eb70c46vandwalle // ...and the scores need to be different:-) 7032451dbcc4f9641df188326215b204b798eb70c46vandwalle if (scoreA == WifiNetworkScoreCache.INVALID_NETWORK_SCORE 7042451dbcc4f9641df188326215b204b798eb70c46vandwalle || scoreB == WifiNetworkScoreCache.INVALID_NETWORK_SCORE) { 705e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle if (VDBG) { 706b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurationsWithScorer no-scores: " 707e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle + a.configKey() 708e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle + " " 709e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle + b.configKey()); 710e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle } 7112451dbcc4f9641df188326215b204b798eb70c46vandwalle return 0; 7122451dbcc4f9641df188326215b204b798eb70c46vandwalle } 7132451dbcc4f9641df188326215b204b798eb70c46vandwalle 7142451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 7152451dbcc4f9641df188326215b204b798eb70c46vandwalle String prefer = " = "; 7162451dbcc4f9641df188326215b204b798eb70c46vandwalle if (scoreA < scoreB) { 7172451dbcc4f9641df188326215b204b798eb70c46vandwalle prefer = " < "; 7182451dbcc4f9641df188326215b204b798eb70c46vandwalle } if (scoreA > scoreB) { 7192451dbcc4f9641df188326215b204b798eb70c46vandwalle prefer = " > "; 7202451dbcc4f9641df188326215b204b798eb70c46vandwalle } 721b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurationsWithScorer " + a.configKey() 7222451dbcc4f9641df188326215b204b798eb70c46vandwalle + " rssi=(" + a.visibility.rssi24 7232451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + a.visibility.rssi5 7242451dbcc4f9641df188326215b204b798eb70c46vandwalle + ") num=(" + a.visibility.num24 7252451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + a.visibility.num5 + ")" 726e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle + " sc=" + scoreA 7272451dbcc4f9641df188326215b204b798eb70c46vandwalle + prefer + b.configKey() 7282451dbcc4f9641df188326215b204b798eb70c46vandwalle + " rssi=(" + b.visibility.rssi24 7292451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + b.visibility.rssi5 7302451dbcc4f9641df188326215b204b798eb70c46vandwalle + ") num=(" + b.visibility.num24 7312451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + b.visibility.num5 + ")" 732e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle + " sc=" + scoreB 7332451dbcc4f9641df188326215b204b798eb70c46vandwalle + " -> " + Integer.toString(scoreB - scoreA)); 7342451dbcc4f9641df188326215b204b798eb70c46vandwalle } 735c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 7362451dbcc4f9641df188326215b204b798eb70c46vandwalle // If scoreA > scoreB, the comparison is descending hence the return value is negative 7372451dbcc4f9641df188326215b204b798eb70c46vandwalle return scoreB - scoreA; 7382451dbcc4f9641df188326215b204b798eb70c46vandwalle } 7392451dbcc4f9641df188326215b204b798eb70c46vandwalle 740f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int compareWifiConfigurations(WifiConfiguration a, WifiConfiguration b) { 741f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int order = 0; 742f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle boolean linked = false; 743f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 744453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle if ((a.linkedConfigurations != null) && (b.linkedConfigurations != null) 745453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle && (a.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED) 746453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle && (b.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED)) { 7472451dbcc4f9641df188326215b204b798eb70c46vandwalle if ((a.linkedConfigurations.get(b.configKey(true)) != null) 7482451dbcc4f9641df188326215b204b798eb70c46vandwalle && (b.linkedConfigurations.get(a.configKey(true)) != null)) { 749f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle linked = true; 750f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 751f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 752f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 753f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (a.ephemeral && b.ephemeral == false) { 754f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 755b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations ephemeral and prefers " + b.configKey() 756453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + " over " + a.configKey()); 757f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 758931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle return 1; // b is of higher priority - ascending 759f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 760f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (b.ephemeral && a.ephemeral == false) { 761f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 762b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations ephemeral and prefers " + a.configKey() 763453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + " over " + b.configKey()); 764f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 765931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle return -1; // a is of higher priority - descending 766f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 767f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 7682451dbcc4f9641df188326215b204b798eb70c46vandwalle // Apply RSSI, in the range [-5, +5] 7692451dbcc4f9641df188326215b204b798eb70c46vandwalle // after band adjustment, +n difference roughly corresponds to +10xn dBm 7702451dbcc4f9641df188326215b204b798eb70c46vandwalle order = order + compareWifiConfigurationsRSSI(a, b, mCurrentConfigurationKey); 771f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 7722451dbcc4f9641df188326215b204b798eb70c46vandwalle // If the configurations are not linked, compare by user's choice, only a 7732451dbcc4f9641df188326215b204b798eb70c46vandwalle // very high RSSI difference can then override the choice 7742451dbcc4f9641df188326215b204b798eb70c46vandwalle if (!linked) { 7752451dbcc4f9641df188326215b204b798eb70c46vandwalle int choice; 776f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 7772451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = getConnectChoice(a, b); 7782451dbcc4f9641df188326215b204b798eb70c46vandwalle if (choice > 0) { 779931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // a is of higher priority - descending 7802451dbcc4f9641df188326215b204b798eb70c46vandwalle order = order - choice; 781f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 782b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations prefers " + a.configKey() 783453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + " over " + b.configKey() 784b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " due to user choice of " + choice 785b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " order -> " + Integer.toString(order)); 786f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 7872451dbcc4f9641df188326215b204b798eb70c46vandwalle } 7882451dbcc4f9641df188326215b204b798eb70c46vandwalle 7892451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = getConnectChoice(b, a); 7902451dbcc4f9641df188326215b204b798eb70c46vandwalle if (choice > 0) { 791931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // a is of lower priority - ascending 7922451dbcc4f9641df188326215b204b798eb70c46vandwalle order = order + choice; 7934dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle if (VDBG) { 794b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations prefers " + b.configKey() + " over " 795b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + a.configKey() + " due to user choice of " + choice 796b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " order ->" + Integer.toString(order)); 797f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 798f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 799f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 800ede1310be531a84faa08f02c3fd243448dd936ddvandwalle 801f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (order == 0) { 802931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // We don't know anything - pick the last seen i.e. K behavior 803931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // we should do this only for recently picked configurations 804f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (a.priority > b.priority) { 805931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // a is of higher priority - descending 8062451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 807b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations prefers -1 " + a.configKey() + " over " 808453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + b.configKey() + " due to priority"); 809f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 810f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 811f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle order = -1; 812f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else if (a.priority < b.priority) { 813931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // a is of lower priority - ascending 8142451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 815b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations prefers +1 " + b.configKey() + " over " 816453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + a.configKey() + " due to priority"); 817f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 8182451dbcc4f9641df188326215b204b798eb70c46vandwalle order = 1; 819f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 820f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 821f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 822f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle String sorder = " == "; 823931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle if (order > 0) { 824f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle sorder = " < "; 825931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle } else if (order < 0) { 826f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle sorder = " > "; 827931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle } 828f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 8292451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 830b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg("compareWifiConfigurations: " + a.configKey() + sorder 831453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + b.configKey() + " order " + Integer.toString(order)); 832f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 833f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 834f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return order; 835f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 836f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 837c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle boolean isBadCandidate(int rssi5, int rssi24) { 838c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle return (rssi5 < -80 && rssi24 < -90); 839c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle } 840c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 841c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle int compareWifiConfigurationsTop(WifiConfiguration a, WifiConfiguration b) { 842c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle int scorerOrder = compareWifiConfigurationsWithScorer(a, b); 843c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle int order = compareWifiConfigurations(a, b); 844c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle 845c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle if (scorerOrder * order < 0) { 846b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle if (VDBG) { 847b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" -> compareWifiConfigurationsTop: " + 848b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle "scorer override " + scorerOrder + " " + order); 849b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle } 850c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // For debugging purpose, remember that an override happened 851c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // during that autojoin Attempt 852c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle didOverride = true; 853c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle a.numScorerOverride++; 854c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle b.numScorerOverride++; 855c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle } 856c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle 857c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle if (scorerOrder != 0) { 858c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // If the scorer came up with a result then use the scorer's result, else use 859c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // the order provided by the base comparison function 860c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle order = scorerOrder; 861c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle } 862c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle return order; 863c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle } 864c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle 8659f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle public int rssiBoostFrom5GHzRssi(int rssi, String dbg) { 8660eebae7334d6129f7ca1344e4b20199794994358vandwalle if (!mWifiConfigStore.enable5GHzPreference) { 8670eebae7334d6129f7ca1344e4b20199794994358vandwalle return 0; 8680eebae7334d6129f7ca1344e4b20199794994358vandwalle } 869e67ec726c07410073575473c0f50dc737629f5davandwalle if (rssi 8700eebae7334d6129f7ca1344e4b20199794994358vandwalle > mWifiConfigStore.bandPreferenceBoostThreshold5) { 871e67ec726c07410073575473c0f50dc737629f5davandwalle // Boost by 2 dB for each point 872e67ec726c07410073575473c0f50dc737629f5davandwalle // Start boosting at -65 873e67ec726c07410073575473c0f50dc737629f5davandwalle // Boost by 20 if above -55 874e67ec726c07410073575473c0f50dc737629f5davandwalle // Boost by 40 if abore -45 8750eebae7334d6129f7ca1344e4b20199794994358vandwalle int boost = mWifiConfigStore.bandPreferenceBoostFactor5 8760eebae7334d6129f7ca1344e4b20199794994358vandwalle *(rssi - mWifiConfigStore.bandPreferenceBoostThreshold5); 877e67ec726c07410073575473c0f50dc737629f5davandwalle if (boost > 50) { 878e67ec726c07410073575473c0f50dc737629f5davandwalle // 50 dB boost is set so as to overcome the hysteresis of +20 plus a difference of 879e67ec726c07410073575473c0f50dc737629f5davandwalle // 25 dB between 2.4 and 5GHz band. This allows jumping from 2.4 to 5GHz 880e67ec726c07410073575473c0f50dc737629f5davandwalle // consistently 881e67ec726c07410073575473c0f50dc737629f5davandwalle boost = 50; 882e67ec726c07410073575473c0f50dc737629f5davandwalle } 8839f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle if (VDBG && dbg != null) { 884b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" " + dbg + ": rssi5 " + rssi + " boost " + boost); 8859f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle } 886e67ec726c07410073575473c0f50dc737629f5davandwalle return boost; 887e67ec726c07410073575473c0f50dc737629f5davandwalle } 888e67ec726c07410073575473c0f50dc737629f5davandwalle 889e67ec726c07410073575473c0f50dc737629f5davandwalle if (rssi 8900eebae7334d6129f7ca1344e4b20199794994358vandwalle < mWifiConfigStore.bandPreferencePenaltyThreshold5) { 8910eebae7334d6129f7ca1344e4b20199794994358vandwalle // penalize if < -75 8920eebae7334d6129f7ca1344e4b20199794994358vandwalle int boost = mWifiConfigStore.bandPreferencePenaltyFactor5 8930eebae7334d6129f7ca1344e4b20199794994358vandwalle *(rssi - mWifiConfigStore.bandPreferencePenaltyThreshold5); 8940eebae7334d6129f7ca1344e4b20199794994358vandwalle return boost; 895e67ec726c07410073575473c0f50dc737629f5davandwalle } 896e67ec726c07410073575473c0f50dc737629f5davandwalle return 0; 897e67ec726c07410073575473c0f50dc737629f5davandwalle } 898c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle /** 899e67ec726c07410073575473c0f50dc737629f5davandwalle * attemptRoam() function implements the core of the same SSID switching algorithm 900e67ec726c07410073575473c0f50dc737629f5davandwalle * 901e67ec726c07410073575473c0f50dc737629f5davandwalle * Run thru all recent scan result of a WifiConfiguration and select the 902e67ec726c07410073575473c0f50dc737629f5davandwalle * best one. 903c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle */ 904e67ec726c07410073575473c0f50dc737629f5davandwalle public ScanResult attemptRoam(ScanResult a, 905e67ec726c07410073575473c0f50dc737629f5davandwalle WifiConfiguration current, int age, String currentBSSID) { 906b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (current == null) { 907b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (VDBG) { 908b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle logDbg("attemptRoam not associated"); 909b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 910e67ec726c07410073575473c0f50dc737629f5davandwalle return a; 9114dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 912b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (current.scanResultCache == null) { 913b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (VDBG) { 914b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle logDbg("attemptRoam no scan cache"); 915b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 916e67ec726c07410073575473c0f50dc737629f5davandwalle return a; 9174dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 918b07da189850a4bfa268f8ab9be7867935eb2ecb5vandwalle if (current.scanResultCache.size() > 6) { 919b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (VDBG) { 920c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle logDbg("attemptRoam scan cache size " 921c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle + current.scanResultCache.size() + " --> bail"); 922b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 923931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Implement same SSID roaming only for configurations 924c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle // that have less than 4 BSSIDs 925e67ec726c07410073575473c0f50dc737629f5davandwalle return a; 9264dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 927b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle 9282f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle if (current.BSSID != null && !current.BSSID.equals("any")) { 929b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (DBG) { 9302f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle logDbg("attemptRoam() BSSID is set " 9312f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle + current.BSSID + " -> bail"); 932b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 933e67ec726c07410073575473c0f50dc737629f5davandwalle return a; 9344dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 9354dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 936931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Determine which BSSID we want to associate to, taking account 937c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle // relative strength of 5 and 2.4 GHz BSSIDs 9382451dbcc4f9641df188326215b204b798eb70c46vandwalle long nowMs = System.currentTimeMillis(); 9394dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 94097b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle for (ScanResult b : current.scanResultCache.values()) { 94197b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle int bRssiBoost5 = 0; 94297b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle int aRssiBoost5 = 0; 94397b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle int bRssiBoost = 0; 94497b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle int aRssiBoost = 0; 945931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle if ((b.seen == 0) || (b.BSSID == null) 9460d616ef3bf635dff8722e064c0be842676390ed8vandwalle || ((nowMs - b.seen) > age) 947e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle || b.autoJoinStatus != ScanResult.ENABLED 948e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle || b.numIpConfigFailures > 8) { 9494dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle continue; 9503a2a3d226881cce8a4e511302231d843b0def303vandwalle } 9514dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 952931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Pick first one 9534dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle if (a == null) { 9544dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle a = b; 9554dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle continue; 9564dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 9574dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 958e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle if (b.numIpConfigFailures < (a.numIpConfigFailures - 1)) { 959e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // Prefer a BSSID that doesn't have less number of Ip config failures 960e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle logDbg("attemptRoam: " 961e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + b.BSSID + " rssi=" + b.level + " ipfail=" +b.numIpConfigFailures 962e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " freq=" + b.frequency 963e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " > " 964e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + a.BSSID + " rssi=" + a.level + " ipfail=" +a.numIpConfigFailures 965e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " freq=" + a.frequency); 966e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle a = b; 967e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle continue; 968e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle } 969e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle 9702451dbcc4f9641df188326215b204b798eb70c46vandwalle // Apply hysteresis: we favor the currentBSSID by giving it a boost 9717806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle if (currentBSSID != null && currentBSSID.equals(b.BSSID)) { 972931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Reduce the benefit of hysteresis if RSSI <= -75 9730eebae7334d6129f7ca1344e4b20199794994358vandwalle if (b.level <= mWifiConfigStore.bandPreferencePenaltyThreshold5) { 9740eebae7334d6129f7ca1344e4b20199794994358vandwalle bRssiBoost = mWifiConfigStore.associatedHysteresisLow; 975c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle } else { 9760eebae7334d6129f7ca1344e4b20199794994358vandwalle bRssiBoost = mWifiConfigStore.associatedHysteresisHigh; 977c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle } 9784dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 9797806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle if (currentBSSID != null && currentBSSID.equals(a.BSSID)) { 9800eebae7334d6129f7ca1344e4b20199794994358vandwalle if (a.level <= mWifiConfigStore.bandPreferencePenaltyThreshold5) { 981931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Reduce the benefit of hysteresis if RSSI <= -75 9820eebae7334d6129f7ca1344e4b20199794994358vandwalle aRssiBoost = mWifiConfigStore.associatedHysteresisLow; 983c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle } else { 9840eebae7334d6129f7ca1344e4b20199794994358vandwalle aRssiBoost = mWifiConfigStore.associatedHysteresisHigh; 985c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle } 9864dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 9872451dbcc4f9641df188326215b204b798eb70c46vandwalle 98897b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle // Favor 5GHz: give a boost to 5GHz BSSIDs, with a slightly progressive curve 9892451dbcc4f9641df188326215b204b798eb70c46vandwalle // Boost the BSSID if it is on 5GHz, above a threshold 9902451dbcc4f9641df188326215b204b798eb70c46vandwalle // But penalize it if it is on 5GHz and below threshold 99197b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle // 99297b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle // With he current threshold values, 5GHz network with RSSI above -55 99397b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle // Are given a boost of 30DB which is enough to overcome the current BSSID 99497b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle // hysteresis (+14) plus 2.4/5 GHz signal strength difference on most cases 9959f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle // 9969f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle // The "current BSSID" Boost must be added to the BSSID's level so as to introduce\ 9979f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle // soem amount of hysteresis 998e67ec726c07410073575473c0f50dc737629f5davandwalle if (b.is5GHz()) { 9999f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle bRssiBoost5 = rssiBoostFrom5GHzRssi(b.level + bRssiBoost, b.BSSID); 10004dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 1001e67ec726c07410073575473c0f50dc737629f5davandwalle if (a.is5GHz()) { 10029f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle aRssiBoost5 = rssiBoostFrom5GHzRssi(a.level + aRssiBoost, a.BSSID); 10034dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 10044dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 10054dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle if (VDBG) { 1006c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle String comp = " < "; 1007c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle if (b.level + bRssiBoost + bRssiBoost5 > a.level +aRssiBoost + aRssiBoost5) { 1008c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle comp = " > "; 1009c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle } 10104dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle logDbg("attemptRoam: " 1011c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle + b.BSSID + " rssi=" + b.level + " boost=" + Integer.toString(bRssiBoost) 101297b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle + "/" + Integer.toString(bRssiBoost5) + " freq=" + b.frequency 101397b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle + comp 1014c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle + a.BSSID + " rssi=" + a.level + " boost=" + Integer.toString(aRssiBoost) 1015c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle + "/" + Integer.toString(aRssiBoost5) + " freq=" + a.frequency); 1016c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle } 1017c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle 10182451dbcc4f9641df188326215b204b798eb70c46vandwalle // Compare the RSSIs after applying the hysteresis boost and the 5GHz 10192451dbcc4f9641df188326215b204b798eb70c46vandwalle // boost if applicable 1020c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle if (b.level + bRssiBoost + bRssiBoost5 > a.level +aRssiBoost + aRssiBoost5) { 1021931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // b is the better BSSID 1022c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle a = b; 10234dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 10244dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 10253a2a3d226881cce8a4e511302231d843b0def303vandwalle if (a != null) { 10263a2a3d226881cce8a4e511302231d843b0def303vandwalle if (VDBG) { 10277806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle StringBuilder sb = new StringBuilder(); 1028e67ec726c07410073575473c0f50dc737629f5davandwalle sb.append("attemptRoam: " + current.configKey() + 1029e67ec726c07410073575473c0f50dc737629f5davandwalle " Found " + a.BSSID + " rssi=" + a.level + " freq=" + a.frequency); 10307806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle if (currentBSSID != null) { 10317806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle sb.append(" Current: " + currentBSSID); 10327806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle } 10337806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle sb.append("\n"); 10347806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle logDbg(sb.toString()); 10353a2a3d226881cce8a4e511302231d843b0def303vandwalle } 10364dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 10373a2a3d226881cce8a4e511302231d843b0def303vandwalle return a; 10384dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 10394dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 1040931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 10412451dbcc4f9641df188326215b204b798eb70c46vandwalle * getNetworkScore() 10422451dbcc4f9641df188326215b204b798eb70c46vandwalle * 10432451dbcc4f9641df188326215b204b798eb70c46vandwalle * if scorer is present, get the network score of a WifiConfiguration 10442451dbcc4f9641df188326215b204b798eb70c46vandwalle * 10452451dbcc4f9641df188326215b204b798eb70c46vandwalle * Note: this should be merge with setVisibility 10462451dbcc4f9641df188326215b204b798eb70c46vandwalle * 10472451dbcc4f9641df188326215b204b798eb70c46vandwalle * @param config 10482451dbcc4f9641df188326215b204b798eb70c46vandwalle * @return score 10492451dbcc4f9641df188326215b204b798eb70c46vandwalle */ 105081c9ea6c343bc7f8d87095237e59844a974d0b70Jeff Davidson int getConfigNetworkScore(WifiConfiguration config, int age, boolean isActive) { 10512451dbcc4f9641df188326215b204b798eb70c46vandwalle 10522451dbcc4f9641df188326215b204b798eb70c46vandwalle if (mNetworkScoreCache == null) { 1053e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle if (VDBG) { 1054b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" getConfigNetworkScore for " + config.configKey() 1055e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle + " -> no scorer, hence no scores"); 1056e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle } 10571db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle return WifiNetworkScoreCache.INVALID_NETWORK_SCORE; 10581db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle } 10591db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle if (config.scanResultCache == null) { 1060e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle if (VDBG) { 1061b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" getConfigNetworkScore for " + config.configKey() 1062e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle + " -> no scan cache"); 1063e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle } 10641db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle return WifiNetworkScoreCache.INVALID_NETWORK_SCORE; 10652451dbcc4f9641df188326215b204b798eb70c46vandwalle } 10662451dbcc4f9641df188326215b204b798eb70c46vandwalle 10672451dbcc4f9641df188326215b204b798eb70c46vandwalle // Get current date 10682451dbcc4f9641df188326215b204b798eb70c46vandwalle long nowMs = System.currentTimeMillis(); 10692451dbcc4f9641df188326215b204b798eb70c46vandwalle 10701db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle int startScore = -10000; 10711db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle 10722451dbcc4f9641df188326215b204b798eb70c46vandwalle // Run thru all cached scan results 10731db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle for (ScanResult result : config.scanResultCache.values()) { 10742451dbcc4f9641df188326215b204b798eb70c46vandwalle if ((nowMs - result.seen) < age) { 107581c9ea6c343bc7f8d87095237e59844a974d0b70Jeff Davidson int sc = mNetworkScoreCache.getNetworkScore(result, isActive); 10761db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle if (sc > startScore) { 10771db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle startScore = sc; 10782451dbcc4f9641df188326215b204b798eb70c46vandwalle } 10792451dbcc4f9641df188326215b204b798eb70c46vandwalle } 10802451dbcc4f9641df188326215b204b798eb70c46vandwalle } 10811db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle if (startScore == -10000) { 10821db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle startScore = WifiNetworkScoreCache.INVALID_NETWORK_SCORE; 10831db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle } 1084e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle if (VDBG) { 1085e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle if (startScore == WifiNetworkScoreCache.INVALID_NETWORK_SCORE) { 1086b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" getConfigNetworkScore for " + config.configKey() 1087e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle + " -> no available score"); 1088e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle } else { 1089b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" getConfigNetworkScore for " + config.configKey() 109081c9ea6c343bc7f8d87095237e59844a974d0b70Jeff Davidson + " isActive=" + isActive 1091e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle + " score = " + Integer.toString(startScore)); 1092e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle } 1093e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle } 1094e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle 10951db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle return startScore; 10962451dbcc4f9641df188326215b204b798eb70c46vandwalle } 10972451dbcc4f9641df188326215b204b798eb70c46vandwalle 10982451dbcc4f9641df188326215b204b798eb70c46vandwalle /** 10998639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson * Set whether connections to untrusted connections are allowed. 11008639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson */ 11018639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson void setAllowUntrustedConnections(boolean allow) { 11028639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson boolean changed = mAllowUntrustedConnections != allow; 11038639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson mAllowUntrustedConnections = allow; 11048639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson if (changed) { 1105005c1ef113192f898499a407dd266393a8d6b076vandwalle // Trigger a scan so as to reattempt autojoin 1106005c1ef113192f898499a407dd266393a8d6b076vandwalle mWifiStateMachine.startScanForUntrustedSettingChange(); 11078639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson } 11088639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson } 11098639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson 11108639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson private boolean isOpenNetwork(ScanResult result) { 11118639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson return !result.capabilities.contains("WEP") && 11128639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson !result.capabilities.contains("PSK") && 11138639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson !result.capabilities.contains("EAP"); 11148639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson } 11158639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson 11168639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson /** 1117931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * attemptAutoJoin() function implements the core of the a network switching algorithm 111868fee36dac1dda5c596c00ef33fdbc0962e9ec9fvandwalle * Return false if no acceptable networks were found. 1119931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 112068fee36dac1dda5c596c00ef33fdbc0962e9ec9fvandwalle boolean attemptAutoJoin() { 112168fee36dac1dda5c596c00ef33fdbc0962e9ec9fvandwalle boolean found = false; 1122c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle didOverride = false; 11231ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle didBailDueToWeakRssi = false; 1124b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle int networkSwitchType = AUTO_JOIN_IDLE; 11254dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 11268c9088d11880553458f09377cc60d6eb7e66747bvandwalle String lastSelectedConfiguration = mWifiConfigStore.getLastSelectedConfiguration(); 11278c9088d11880553458f09377cc60d6eb7e66747bvandwalle 1128931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Reset the currentConfiguration Key, and set it only if WifiStateMachine and 1129453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle // supplicant agree 1130453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle mCurrentConfigurationKey = null; 1131453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle WifiConfiguration currentConfiguration = mWifiStateMachine.getCurrentWifiConfiguration(); 1132453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle 1133f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration candidate = null; 1134f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1135931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Obtain the subset of recently seen networks 113627355a942653264388e909a4276196ee63e57811vandwalle List<WifiConfiguration> list = mWifiConfigStore.getRecentConfiguredNetworks(3000, false); 1137f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (list == null) { 11382f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle if (VDBG) logDbg("attemptAutoJoin nothing known=" + 11392f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle mWifiConfigStore.getconfiguredNetworkSize()); 114068fee36dac1dda5c596c00ef33fdbc0962e9ec9fvandwalle return false; 1141f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1142f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1143931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Find the currently connected network: ask the supplicant directly 114499d385e3b4d34841d6efcfd7cc9bf1d5ae25de14vandwalle String val = mWifiNative.status(true); 1145f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle String status[] = val.split("\\r?\\n"); 1146f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 1147f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("attemptAutoJoin() status=" + val + " split=" 1148f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(status.length)); 1149f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1150f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1151b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle int supplicantNetId = -1; 1152f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for (String key : status) { 1153f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (key.regionMatches(0, "id=", 0, 3)) { 1154f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int idx = 3; 1155b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle supplicantNetId = 0; 1156f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle while (idx < key.length()) { 1157f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle char c = key.charAt(idx); 1158f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1159f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ((c >= 0x30) && (c <= 0x39)) { 1160b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle supplicantNetId *= 10; 1161b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle supplicantNetId += c - 0x30; 1162f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle idx++; 1163f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 1164f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle break; 1165f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1166f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 116756d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle } else if (key.contains("wpa_state=ASSOCIATING") 116856d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle || key.contains("wpa_state=ASSOCIATED") 116956d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle || key.contains("wpa_state=FOUR_WAY_HANDSHAKE") 117056d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle || key.contains("wpa_state=GROUP_KEY_HANDSHAKE")) { 117156d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle if (DBG) { 117256d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle logDbg("attemptAutoJoin: bail out due to sup state " + key); 117356d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle } 117456d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // After WifiStateMachine ask the supplicant to associate or reconnect 117556d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // we might still obtain scan results from supplicant 117656d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // however the supplicant state in the mWifiInfo and supplicant state tracker 117756d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // are updated when we get the supplicant state change message which can be 117856d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // processed after the SCAN_RESULT message, so at this point the framework doesn't 117956d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // know that supplicant is ASSOCIATING. 118056d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // A good fix for this race condition would be for the WifiStateMachine to add 118156d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // a new transient state where it expects to get the supplicant message indicating 118256d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // that it started the association process and within which critical operations 118356d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // like autojoin should be deleted. 118456d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle 118556d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // This transient state would remove the need for the roam Wathchdog which 118656d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // basically does that. 118756d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle 118856d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // At the moment, we just query the supplicant state synchronously with the 118956d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // mWifiNative.status() command, which allow us to know that 119056d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // supplicant has started association process, even though we didnt yet get the 119156d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // SUPPLICANT_STATE_CHANGE message. 119268fee36dac1dda5c596c00ef33fdbc0962e9ec9fvandwalle return false; 1193f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1194f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1195ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (DBG) { 11967806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle String conf = ""; 1197b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle String last = ""; 11987806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle if (currentConfiguration != null) { 1199e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle conf = " current=" + currentConfiguration.configKey(); 1200b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle } 1201b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle if (lastSelectedConfiguration != null) { 12022f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle last = " last=" + lastSelectedConfiguration; 12037806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle } 1204ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle logDbg("attemptAutoJoin() num recent config " + Integer.toString(list.size()) 1205b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + conf + last 1206b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " ---> suppNetId=" + Integer.toString(supplicantNetId)); 1207ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 1208f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1209453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle if (currentConfiguration != null) { 12102451dbcc4f9641df188326215b204b798eb70c46vandwalle if (supplicantNetId != currentConfiguration.networkId 1211005c1ef113192f898499a407dd266393a8d6b076vandwalle // https://b.corp.google.com/issue?id=16484607 1212005c1ef113192f898499a407dd266393a8d6b076vandwalle // mark this condition as an error only if the mismatched networkId are valid 12132451dbcc4f9641df188326215b204b798eb70c46vandwalle && supplicantNetId != WifiConfiguration.INVALID_NETWORK_ID 12142451dbcc4f9641df188326215b204b798eb70c46vandwalle && currentConfiguration.networkId != WifiConfiguration.INVALID_NETWORK_ID) { 1215453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("attemptAutoJoin() ERROR wpa_supplicant out of sync nid=" 1216b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle + Integer.toString(supplicantNetId) + " WifiStateMachine=" 1217453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + Integer.toString(currentConfiguration.networkId)); 1218b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle mWifiStateMachine.disconnectCommand(); 121968fee36dac1dda5c596c00ef33fdbc0962e9ec9fvandwalle return false; 12208639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson } else if (currentConfiguration.ephemeral && (!mAllowUntrustedConnections || 12218639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson !mNetworkScoreCache.isScoredNetwork(currentConfiguration.lastSeen()))) { 12228639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson // The current connection is untrusted (the framework added it), but we're either 12238639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson // no longer allowed to connect to such networks, or the score has been nullified 12248639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson // since we connected. Drop the current connection and perform the rest of autojoin. 12258639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson logDbg("attemptAutoJoin() disconnecting from unwanted ephemeral network"); 12268639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson mWifiStateMachine.disconnectCommand(); 122768fee36dac1dda5c596c00ef33fdbc0962e9ec9fvandwalle return false; 1228453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle } else { 1229453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle mCurrentConfigurationKey = currentConfiguration.configKey(); 1230453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle } 12318c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle } else { 12328c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle if (supplicantNetId != WifiConfiguration.INVALID_NETWORK_ID) { 12338c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle // Maybe in the process of associating, skip this attempt 123468fee36dac1dda5c596c00ef33fdbc0962e9ec9fvandwalle return false; 12358c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle } 1236453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle } 1237453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle 1238b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle int currentNetId = -1; 1239b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle if (currentConfiguration != null) { 1240931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // If we are associated to a configuration, it will 1241b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle // be compared thru the compareNetwork function 1242b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle currentNetId = currentConfiguration.networkId; 1243b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle } 1244b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle 1245931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 1246931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * Run thru all visible configurations without looking at the one we 1247c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle * are currently associated to 12484dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle * select Best Network candidate from known WifiConfigurations 1249931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 1250f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for (WifiConfiguration config : list) { 1251e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle if (config.SSID == null) { 1252b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle continue; 1253e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle } 1254e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle 125527355a942653264388e909a4276196ee63e57811vandwalle if (config.autoJoinStatus >= 125627355a942653264388e909a4276196ee63e57811vandwalle WifiConfiguration.AUTO_JOIN_DISABLED_ON_AUTH_FAILURE) { 1257931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Avoid networks disabled because of AUTH failure altogether 1258ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (DBG) { 1259ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle logDbg("attemptAutoJoin skip candidate due to auto join status " 1260ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle + Integer.toString(config.autoJoinStatus) + " key " 1261e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + config.configKey(true) 1262e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " reason " + config.disableReason); 1263ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 1264f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle continue; 1265f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1266f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1267931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Try to un-blacklist based on elapsed time 126827355a942653264388e909a4276196ee63e57811vandwalle if (config.blackListTimestamp > 0) { 126927355a942653264388e909a4276196ee63e57811vandwalle long now = System.currentTimeMillis(); 127027355a942653264388e909a4276196ee63e57811vandwalle if (now < config.blackListTimestamp) { 1271931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 1272931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * looks like there was a change in the system clock since we black listed, and 1273931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * timestamp is not meaningful anymore, hence lose it. 1274931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * this event should be rare enough so that we still want to lose the black list 12752451dbcc4f9641df188326215b204b798eb70c46vandwalle */ 127627355a942653264388e909a4276196ee63e57811vandwalle config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 127727355a942653264388e909a4276196ee63e57811vandwalle } else { 12784dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle if ((now - config.blackListTimestamp) > loseBlackListHardMilli) { 1279931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Reenable it after 18 hours, i.e. next day 128027355a942653264388e909a4276196ee63e57811vandwalle config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 12814dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } else if ((now - config.blackListTimestamp) > loseBlackListSoftMilli) { 1282931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Lose blacklisting due to bad link 128327355a942653264388e909a4276196ee63e57811vandwalle config.setAutoJoinStatus(config.autoJoinStatus - 8); 128427355a942653264388e909a4276196ee63e57811vandwalle } 128527355a942653264388e909a4276196ee63e57811vandwalle } 128627355a942653264388e909a4276196ee63e57811vandwalle } 128727355a942653264388e909a4276196ee63e57811vandwalle 1288931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Try to unblacklist based on good visibility 12898c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle if (config.visibility.rssi5 < mWifiConfigStore.thresholdUnblacklistThreshold5Soft 12908c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle && config.visibility.rssi24 12918c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle < mWifiConfigStore.thresholdUnblacklistThreshold24Soft) { 129227355a942653264388e909a4276196ee63e57811vandwalle if (DBG) { 1293c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle logDbg("attemptAutoJoin do not unblacklist due to low visibility " 12944dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + config.autoJoinStatus 12954dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + " key " + config.configKey(true) 12964dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + " rssi=(" + config.visibility.rssi24 12974dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + "," + config.visibility.rssi5 12984dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + ") num=(" + config.visibility.num24 12994dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + "," + config.visibility.num5 + ")"); 130027355a942653264388e909a4276196ee63e57811vandwalle } 13018c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle } else if (config.visibility.rssi5 < mWifiConfigStore.thresholdUnblacklistThreshold5Hard 13028c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle && config.visibility.rssi24 13038c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle < mWifiConfigStore.thresholdUnblacklistThreshold24Hard) { 1304931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // If the network is simply temporary disabled, don't allow reconnect until 1305931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // RSSI becomes good enough 130627355a942653264388e909a4276196ee63e57811vandwalle config.setAutoJoinStatus(config.autoJoinStatus - 1); 130727355a942653264388e909a4276196ee63e57811vandwalle if (DBG) { 130827355a942653264388e909a4276196ee63e57811vandwalle logDbg("attemptAutoJoin good candidate seen, bumped soft -> status=" 130927355a942653264388e909a4276196ee63e57811vandwalle + config.autoJoinStatus 1310b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " " + config.configKey(true) + " rssi=(" 13114dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + config.visibility.rssi24 + "," + config.visibility.rssi5 13124dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + ") num=(" + config.visibility.num24 13134dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + "," + config.visibility.num5 + ")"); 131427355a942653264388e909a4276196ee63e57811vandwalle } 131527355a942653264388e909a4276196ee63e57811vandwalle } else { 1316c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle config.setAutoJoinStatus(config.autoJoinStatus - 3); 131727355a942653264388e909a4276196ee63e57811vandwalle if (DBG) { 131827355a942653264388e909a4276196ee63e57811vandwalle logDbg("attemptAutoJoin good candidate seen, bumped hard -> status=" 131927355a942653264388e909a4276196ee63e57811vandwalle + config.autoJoinStatus 1320b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " " + config.configKey(true) + " rssi=(" 13214dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + config.visibility.rssi24 + "," + config.visibility.rssi5 13224dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + ") num=(" + config.visibility.num24 13234dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + "," + config.visibility.num5 + ")"); 132427355a942653264388e909a4276196ee63e57811vandwalle } 132527355a942653264388e909a4276196ee63e57811vandwalle } 132627355a942653264388e909a4276196ee63e57811vandwalle 132727355a942653264388e909a4276196ee63e57811vandwalle if (config.autoJoinStatus >= 132827355a942653264388e909a4276196ee63e57811vandwalle WifiConfiguration.AUTO_JOIN_TEMPORARY_DISABLED) { 1329931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Network is blacklisted, skip 13304dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle if (DBG) { 13314dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle logDbg("attemptAutoJoin skip blacklisted -> status=" 13324dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + config.autoJoinStatus 1333b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " " + config.configKey(true) + " rssi=(" 13344dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + config.visibility.rssi24 + "," + config.visibility.rssi5 13354dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + ") num=(" + config.visibility.num24 13364dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + "," + config.visibility.num5 + ")"); 13374dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 133827355a942653264388e909a4276196ee63e57811vandwalle continue; 133927355a942653264388e909a4276196ee63e57811vandwalle } 1340f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config.networkId == currentNetId) { 1341ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (DBG) { 134221bc54cb37a0085b1c909cb4d55ebb12a2facefbvandwalle logDbg("attemptAutoJoin skip current candidate " 134321bc54cb37a0085b1c909cb4d55ebb12a2facefbvandwalle + Integer.toString(currentNetId) 1344ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle + " key " + config.configKey(true)); 1345ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 1346f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle continue; 1347f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1348f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 13490eebae7334d6129f7ca1344e4b20199794994358vandwalle boolean isLastSelected = false; 13500eebae7334d6129f7ca1344e4b20199794994358vandwalle if (lastSelectedConfiguration != null && 13510eebae7334d6129f7ca1344e4b20199794994358vandwalle config.configKey().equals(lastSelectedConfiguration)) { 13520eebae7334d6129f7ca1344e4b20199794994358vandwalle isLastSelected = true; 13530eebae7334d6129f7ca1344e4b20199794994358vandwalle } 13540eebae7334d6129f7ca1344e4b20199794994358vandwalle 13550eebae7334d6129f7ca1344e4b20199794994358vandwalle if (config.visibility == null) { 13560eebae7334d6129f7ca1344e4b20199794994358vandwalle continue; 13570eebae7334d6129f7ca1344e4b20199794994358vandwalle } 13581ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle int boost = config.autoJoinUseAggressiveJoinAttemptThreshold + weakRssiBailCount; 13590eebae7334d6129f7ca1344e4b20199794994358vandwalle if ((config.visibility.rssi5 + boost) 13600eebae7334d6129f7ca1344e4b20199794994358vandwalle < mWifiConfigStore.thresholdInitialAutoJoinAttemptMin5RSSI 13610eebae7334d6129f7ca1344e4b20199794994358vandwalle && (config.visibility.rssi24 + boost) 13620eebae7334d6129f7ca1344e4b20199794994358vandwalle < mWifiConfigStore.thresholdInitialAutoJoinAttemptMin24RSSI) { 13630eebae7334d6129f7ca1344e4b20199794994358vandwalle if (DBG) { 13640eebae7334d6129f7ca1344e4b20199794994358vandwalle logDbg("attemptAutoJoin skip due to low visibility -> status=" 13650eebae7334d6129f7ca1344e4b20199794994358vandwalle + config.autoJoinStatus 13660eebae7334d6129f7ca1344e4b20199794994358vandwalle + " key " + config.configKey(true) + " rssi=" 13670eebae7334d6129f7ca1344e4b20199794994358vandwalle + config.visibility.rssi24 + ", " + config.visibility.rssi5 13680eebae7334d6129f7ca1344e4b20199794994358vandwalle + " num=" + config.visibility.num24 13690eebae7334d6129f7ca1344e4b20199794994358vandwalle + ", " + config.visibility.num5); 13700eebae7334d6129f7ca1344e4b20199794994358vandwalle } 13710eebae7334d6129f7ca1344e4b20199794994358vandwalle 1372c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // Don't try to autojoin a network that is too far but 1373c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // If that configuration is a user's choice however, try anyway 13740eebae7334d6129f7ca1344e4b20199794994358vandwalle if (!isLastSelected) { 13750eebae7334d6129f7ca1344e4b20199794994358vandwalle config.autoJoinBailedDueToLowRssi = true; 13761ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle didBailDueToWeakRssi = true; 13778c9088d11880553458f09377cc60d6eb7e66747bvandwalle continue; 13780eebae7334d6129f7ca1344e4b20199794994358vandwalle } else { 13790eebae7334d6129f7ca1344e4b20199794994358vandwalle // Next time, try to be a bit more aggressive in auto-joining 13800eebae7334d6129f7ca1344e4b20199794994358vandwalle if (config.autoJoinUseAggressiveJoinAttemptThreshold 1381dd0c558776fcfba3f754bb0cd6533f2c9c23ec1evandwalle < WifiConfiguration.MAX_INITIAL_AUTO_JOIN_RSSI_BOOST 1382dd0c558776fcfba3f754bb0cd6533f2c9c23ec1evandwalle && config.autoJoinBailedDueToLowRssi) { 1383dd0c558776fcfba3f754bb0cd6533f2c9c23ec1evandwalle config.autoJoinUseAggressiveJoinAttemptThreshold += 4; 13844dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 13858c9088d11880553458f09377cc60d6eb7e66747bvandwalle } 13860eebae7334d6129f7ca1344e4b20199794994358vandwalle } 1387d30127db46224e45554f8964209221bba8ad41d9vandwalle if (config.numNoInternetAccessReports > 0 1388d30127db46224e45554f8964209221bba8ad41d9vandwalle && !isLastSelected 1389d30127db46224e45554f8964209221bba8ad41d9vandwalle && !config.validatedInternetAccess) { 1390d30127db46224e45554f8964209221bba8ad41d9vandwalle // Avoid autoJoining this network because last time we used it, it didn't 1391d30127db46224e45554f8964209221bba8ad41d9vandwalle // have internet access, and we never manage to validate internet access on this 1392d30127db46224e45554f8964209221bba8ad41d9vandwalle // network configuration 13930eebae7334d6129f7ca1344e4b20199794994358vandwalle if (DBG) { 1394d30127db46224e45554f8964209221bba8ad41d9vandwalle logDbg("attemptAutoJoin skip candidate due to no InternetAccess " 1395d30127db46224e45554f8964209221bba8ad41d9vandwalle + config.configKey(true) 1396d30127db46224e45554f8964209221bba8ad41d9vandwalle + " num reports " + config.numNoInternetAccessReports); 13979f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle } 13980eebae7334d6129f7ca1344e4b20199794994358vandwalle continue; 13998c9088d11880553458f09377cc60d6eb7e66747bvandwalle } 14008c9088d11880553458f09377cc60d6eb7e66747bvandwalle 1401ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (DBG) { 1402e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle String cur = ""; 1403e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle if (candidate != null) { 1404e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle cur = " current candidate " + candidate.configKey(); 1405e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle } 1406e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle logDbg("attemptAutoJoin trying id=" 1407c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle + Integer.toString(config.networkId) + " " 1408b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + config.configKey(true) 1409e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " status=" + config.autoJoinStatus 1410e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + cur); 1411ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 1412f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1413f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (candidate == null) { 1414f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle candidate = config; 1415f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 1416f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 1417453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("attemptAutoJoin will compare candidate " + candidate.configKey() 14184dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + " with " + config.configKey()); 1419f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1420c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle int order = compareWifiConfigurationsTop(candidate, config); 14212451dbcc4f9641df188326215b204b798eb70c46vandwalle 14222451dbcc4f9641df188326215b204b798eb70c46vandwalle // The lastSelectedConfiguration is the configuration the user has manually selected 1423c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // thru WifiPicker, or that a 3rd party app asked us to connect to via the 14242451dbcc4f9641df188326215b204b798eb70c46vandwalle // enableNetwork with disableOthers=true WifiManager API 14252451dbcc4f9641df188326215b204b798eb70c46vandwalle // As this is a direct user choice, we strongly prefer this configuration, 14262451dbcc4f9641df188326215b204b798eb70c46vandwalle // hence give +/-100 14272451dbcc4f9641df188326215b204b798eb70c46vandwalle if ((lastSelectedConfiguration != null) 14282451dbcc4f9641df188326215b204b798eb70c46vandwalle && candidate.configKey().equals(lastSelectedConfiguration)) { 14292451dbcc4f9641df188326215b204b798eb70c46vandwalle // candidate is the last selected configuration, 14302451dbcc4f9641df188326215b204b798eb70c46vandwalle // so keep it above connect choices (+/-60) and 14312451dbcc4f9641df188326215b204b798eb70c46vandwalle // above RSSI/scorer based selection of linked configuration (+/- 50) 14322451dbcc4f9641df188326215b204b798eb70c46vandwalle // by reducing order by -100 14332451dbcc4f9641df188326215b204b798eb70c46vandwalle order = order - 100; 14342451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 14352f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle logDbg(" ...and prefers -100 " + candidate.configKey() 14362451dbcc4f9641df188326215b204b798eb70c46vandwalle + " over " + config.configKey() 14372451dbcc4f9641df188326215b204b798eb70c46vandwalle + " because it is the last selected -> " 14382451dbcc4f9641df188326215b204b798eb70c46vandwalle + Integer.toString(order)); 14392451dbcc4f9641df188326215b204b798eb70c46vandwalle } 14402451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if ((lastSelectedConfiguration != null) 14412451dbcc4f9641df188326215b204b798eb70c46vandwalle && config.configKey().equals(lastSelectedConfiguration)) { 14422451dbcc4f9641df188326215b204b798eb70c46vandwalle // config is the last selected configuration, 14432451dbcc4f9641df188326215b204b798eb70c46vandwalle // so keep it above connect choices (+/-60) and 14442451dbcc4f9641df188326215b204b798eb70c46vandwalle // above RSSI/scorer based selection of linked configuration (+/- 50) 14452451dbcc4f9641df188326215b204b798eb70c46vandwalle // by increasing order by +100 14462451dbcc4f9641df188326215b204b798eb70c46vandwalle order = order + 100; 14472451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 14482f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle logDbg(" ...and prefers +100 " + config.configKey() 14492451dbcc4f9641df188326215b204b798eb70c46vandwalle + " over " + candidate.configKey() 14502451dbcc4f9641df188326215b204b798eb70c46vandwalle + " because it is the last selected -> " 14512451dbcc4f9641df188326215b204b798eb70c46vandwalle + Integer.toString(order)); 14522451dbcc4f9641df188326215b204b798eb70c46vandwalle } 14532451dbcc4f9641df188326215b204b798eb70c46vandwalle } 14542451dbcc4f9641df188326215b204b798eb70c46vandwalle 1455f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (order > 0) { 1456931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Ascending : candidate < config 1457f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle candidate = config; 1458f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1459f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1460f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1461f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 14622451dbcc4f9641df188326215b204b798eb70c46vandwalle // Now, go thru scan result to try finding a better untrusted network 14638639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson // TODO: Consider only running this when we can actually connect to these networks. For now, 14648639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson // this is useful for debugging. 1465f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (mNetworkScoreCache != null) { 1466f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int rssi5 = WifiConfiguration.INVALID_RSSI; 1467f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int rssi24 = WifiConfiguration.INVALID_RSSI; 1468f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (candidate != null) { 1469f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle rssi5 = candidate.visibility.rssi5; 1470f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle rssi24 = candidate.visibility.rssi24; 1471f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1472f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1473931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Get current date 14742451dbcc4f9641df188326215b204b798eb70c46vandwalle long nowMs = System.currentTimeMillis(); 1475c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle int currentScore = -10000; 1476c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // The untrusted network with highest score 1477c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle ScanResult untrustedCandidate = null; 14782451dbcc4f9641df188326215b204b798eb70c46vandwalle // Look for untrusted scored network only if the current candidate is bad 1479c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (isBadCandidate(rssi24, rssi5)) { 1480f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for (ScanResult result : scanResultCache.values()) { 1481c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // We look only at untrusted networks with a valid SSID 1482c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // A trusted result would have been looked at thru it's Wificonfiguration 14838639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson if (TextUtils.isEmpty(result.SSID) || !result.untrusted || 14848639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson !isOpenNetwork(result)) { 1485c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle continue; 1486c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle } 14872451dbcc4f9641df188326215b204b798eb70c46vandwalle if ((nowMs - result.seen) < 3000) { 1488c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Increment usage count for the network 1489c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle mWifiConnectionStatistics.incrementOrAddUntrusted(result.SSID, 0, 1); 1490c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 149181c9ea6c343bc7f8d87095237e59844a974d0b70Jeff Davidson boolean isActiveNetwork = lastUntrustedBSSID != null 149281c9ea6c343bc7f8d87095237e59844a974d0b70Jeff Davidson && result.BSSID.equals(lastUntrustedBSSID); 149381c9ea6c343bc7f8d87095237e59844a974d0b70Jeff Davidson int score = mNetworkScoreCache.getNetworkScore(result, isActiveNetwork); 1494c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (score != WifiNetworkScoreCache.INVALID_NETWORK_SCORE 1495c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle && score > currentScore) { 1496c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Highest score: Select this candidate 1497c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle currentScore = score; 1498c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle untrustedCandidate = result; 1499c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (VDBG) { 1500c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle logDbg("AutoJoinController: found untrusted candidate " 1501c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + result.SSID 1502c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + " RSSI=" + result.level 1503c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + " freq=" + result.frequency 1504c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + " score=" + score); 1505c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle } 1506f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1507f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1508f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1509f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1510c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (untrustedCandidate != null) { 1511c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (lastUntrustedBSSID == null 1512c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle || !untrustedCandidate.SSID.equals(lastUntrustedBSSID)) { 1513c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // We found a new candidate that we are going to connect to, then 1514c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // increase its connection count 15158c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle mWifiConnectionStatistics. 15168c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle incrementOrAddUntrusted(untrustedCandidate.SSID, 1, 0); 1517c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Remember which SSID we are connecting to 1518c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle lastUntrustedBSSID = untrustedCandidate.SSID; 1519c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle } 15208639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson 15218639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson // At this point, we have an untrusted network candidate. 15228639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson // Create the new ephemeral configuration and see if we should switch over 15238639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson if (mAllowUntrustedConnections) { 15248639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson candidate = 15258639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson mWifiConfigStore.wifiConfigurationFromScanResult(untrustedCandidate); 15268639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson candidate.allowedKeyManagement.set(KeyMgmt.NONE); 15278639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson candidate.ephemeral = true; 15288639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson } 1529c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle } 1530c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle } 1531b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle 15321ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle long lastUnwanted = 15331ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle System.currentTimeMillis() 15341ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle - mWifiConfigStore.lastUnwantedNetworkDisconnectTimestamp; 15351ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle if (candidate == null 15361ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle && lastSelectedConfiguration == null 15371ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle && currentConfiguration == null 15381ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle && didBailDueToWeakRssi 15391ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle && (mWifiConfigStore.lastUnwantedNetworkDisconnectTimestamp == 0 15401ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle || lastUnwanted > (1000 * 60 * 60 * 24 * 7)) 15411ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle ) { 15421ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // We are bailing out of autojoin although we are seeing a weak configuration, and 15431ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // - we didn't find another valid candidate 15441ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // - we are not connected 15451ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // - without a user network selection choice 15461ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // - ConnectivityService has not triggered an unwanted network disconnect 15471ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // on this device for a week (hence most likely there is no SIM card or cellular) 15481ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // If all those conditions are met, then boost the RSSI of the weak networks 15491ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // that we are seeing so as we will eventually pick one 15501ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle if (weakRssiBailCount < 10) 15511ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle weakRssiBailCount += 1; 15521ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle } else { 15531ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle if (weakRssiBailCount > 0) 15541ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle weakRssiBailCount -= 1; 15551ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle } 15561ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle 1557931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 1558931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * If candidate is found, check the state of the connection so as 1559931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * to decide if we should be acting on this candidate and switching over 1560931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 1561e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle int networkDelta = compareNetwork(candidate, lastSelectedConfiguration); 1562b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle if (DBG && candidate != null) { 1563b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle String doSwitch = ""; 1564b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle String current = ""; 1565b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle if (networkDelta < 0) { 1566b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle doSwitch = " -> not switching"; 1567b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle } 1568b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle if (currentConfiguration != null) { 15692f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle current = " with current " + currentConfiguration.configKey(); 1570b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle } 1571b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg("attemptAutoJoin networkSwitching candidate " 1572b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle + candidate.configKey() 1573b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + current 1574c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle + " linked=" + (currentConfiguration != null 1575b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle && currentConfiguration.isLinked(candidate)) 1576b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " : delta=" 1577b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + Integer.toString(networkDelta) + " " 1578b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + doSwitch); 1579b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 15804dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 1581931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 1582931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * Ask WifiStateMachine permission to switch : 1583931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * if user is currently streaming voice traffic, 1584931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * then we should not be allowed to switch regardless of the delta 1585931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 1586b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (mWifiStateMachine.shouldSwitchNetwork(networkDelta)) { 1587b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (mStaStaSupported) { 1588b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle logDbg("mStaStaSupported --> error do nothing now "); 1589b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } else { 1590b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (currentConfiguration != null && currentConfiguration.isLinked(candidate)) { 1591b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle networkSwitchType = AUTO_JOIN_EXTENDED_ROAMING; 1592b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } else { 1593b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle networkSwitchType = AUTO_JOIN_OUT_OF_NETWORK_ROAMING; 1594b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 1595b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (DBG) { 1596b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle logDbg("AutoJoin auto connect with netId " 1597b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle + Integer.toString(candidate.networkId) 1598b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle + " to " + candidate.configKey()); 1599b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 16002451dbcc4f9641df188326215b204b798eb70c46vandwalle if (didOverride) { 16012451dbcc4f9641df188326215b204b798eb70c46vandwalle candidate.numScorerOverrideAndSwitchedNetwork++; 16022451dbcc4f9641df188326215b204b798eb70c46vandwalle } 1603c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle candidate.numAssociation++; 1604e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle mWifiConnectionStatistics.numAutoJoinAttempt++; 16059f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle 16062f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle if (candidate.BSSID == null || candidate.BSSID.equals("any")) { 16072f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // First step we selected the configuration we want to connect to 16082f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // Second step: Look for the best Scan result for this configuration 16092f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // TODO this algorithm should really be done in one step 16102f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle String currentBSSID = mWifiStateMachine.getCurrentBSSID(); 16112f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle ScanResult roamCandidate = attemptRoam(null, candidate, 3000, null); 16122f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle if (roamCandidate != null && currentBSSID != null 16132f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle && currentBSSID.equals(roamCandidate.BSSID)) { 16142f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // Sanity, we were already asociated to that candidate 16152f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle roamCandidate = null; 16162f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle } 16172f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle if (roamCandidate != null && roamCandidate.is5GHz()) { 16182f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // If the configuration hasn't a default BSSID selected, and the best 16192f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // candidate is 5GHZ, then select this candidate so as WifiStateMachine and 16202f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // supplicant will pick it first 16212f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle candidate.autoJoinBSSID = roamCandidate.BSSID; 16222f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle if (VDBG) { 16232f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle logDbg("AutoJoinController: lock to 5GHz " 16242f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle + candidate.autoJoinBSSID 16252f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle + " RSSI=" + roamCandidate.level 16262f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle + " freq=" + roamCandidate.frequency); 16272f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle } 1628448c9536a302c58a79e271b1721c08b8882f800evandwalle } else { 1629448c9536a302c58a79e271b1721c08b8882f800evandwalle // We couldnt find a roam candidate 1630448c9536a302c58a79e271b1721c08b8882f800evandwalle candidate.autoJoinBSSID = "any"; 16319f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle } 16329f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle } 1633448c9536a302c58a79e271b1721c08b8882f800evandwalle mWifiStateMachine.sendMessage(WifiStateMachine.CMD_AUTO_CONNECT, 1634448c9536a302c58a79e271b1721c08b8882f800evandwalle candidate.networkId, networkSwitchType, candidate); 163568fee36dac1dda5c596c00ef33fdbc0962e9ec9fvandwalle found = true; 16364dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 1637b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 16384dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 1639b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (networkSwitchType == AUTO_JOIN_IDLE) { 1640e67ec726c07410073575473c0f50dc737629f5davandwalle String currentBSSID = mWifiStateMachine.getCurrentBSSID(); 1641931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Attempt same WifiConfiguration roaming 1642e67ec726c07410073575473c0f50dc737629f5davandwalle ScanResult roamCandidate = attemptRoam(null, currentConfiguration, 3000, 1643e67ec726c07410073575473c0f50dc737629f5davandwalle currentBSSID); 1644e67ec726c07410073575473c0f50dc737629f5davandwalle /** 1645e67ec726c07410073575473c0f50dc737629f5davandwalle * TODO: (post L initial release) 1646e67ec726c07410073575473c0f50dc737629f5davandwalle * consider handling linked configurations roaming (i.e. extended Roaming) 1647e67ec726c07410073575473c0f50dc737629f5davandwalle * thru the attemptRoam function which makes use of the RSSI roaming threshold. 1648e67ec726c07410073575473c0f50dc737629f5davandwalle * At the moment, extended roaming is only handled thru the attemptAutoJoin() 1649e67ec726c07410073575473c0f50dc737629f5davandwalle * function which compare configurations. 1650e67ec726c07410073575473c0f50dc737629f5davandwalle * 1651e67ec726c07410073575473c0f50dc737629f5davandwalle * The advantage of making use of attemptRoam function is that this function 1652e67ec726c07410073575473c0f50dc737629f5davandwalle * will looks at all the BSSID of each configurations, instead of only looking 1653e67ec726c07410073575473c0f50dc737629f5davandwalle * at WifiConfiguration.visibility which keeps trackonly of the RSSI/band of the 1654e67ec726c07410073575473c0f50dc737629f5davandwalle * two highest BSSIDs. 1655e67ec726c07410073575473c0f50dc737629f5davandwalle */ 1656e67ec726c07410073575473c0f50dc737629f5davandwalle // Attempt linked WifiConfiguration roaming 1657e67ec726c07410073575473c0f50dc737629f5davandwalle /* if (currentConfiguration != null 1658e67ec726c07410073575473c0f50dc737629f5davandwalle && currentConfiguration.linkedConfigurations != null) { 1659e67ec726c07410073575473c0f50dc737629f5davandwalle for (String key : currentConfiguration.linkedConfigurations.keySet()) { 1660e67ec726c07410073575473c0f50dc737629f5davandwalle WifiConfiguration link = mWifiConfigStore.getWifiConfiguration(key); 1661e67ec726c07410073575473c0f50dc737629f5davandwalle if (link != null) { 1662e67ec726c07410073575473c0f50dc737629f5davandwalle roamCandidate = attemptRoam(roamCandidate, link, 3000, 1663e67ec726c07410073575473c0f50dc737629f5davandwalle currentBSSID); 1664e67ec726c07410073575473c0f50dc737629f5davandwalle } 1665e67ec726c07410073575473c0f50dc737629f5davandwalle } 1666e67ec726c07410073575473c0f50dc737629f5davandwalle }*/ 1667e67ec726c07410073575473c0f50dc737629f5davandwalle if (roamCandidate != null && currentBSSID != null 1668e67ec726c07410073575473c0f50dc737629f5davandwalle && currentBSSID.equals(roamCandidate.BSSID)) { 1669e67ec726c07410073575473c0f50dc737629f5davandwalle roamCandidate = null; 1670e67ec726c07410073575473c0f50dc737629f5davandwalle } 16712f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle if (roamCandidate != null && mWifiStateMachine.shouldSwitchNetwork(999)) { 1672b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (DBG) { 1673b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle logDbg("AutoJoin auto roam with netId " 1674b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle + Integer.toString(currentConfiguration.networkId) 1675b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle + " " + currentConfiguration.configKey() + " to BSSID=" 1676b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle + roamCandidate.BSSID + " freq=" + roamCandidate.frequency 16771ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle + " RSSI=" + roamCandidate.level); 1678b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 1679b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle networkSwitchType = AUTO_JOIN_ROAMING; 1680e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle mWifiConnectionStatistics.numAutoRoamAttempt++; 1681e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle 1682b07da189850a4bfa268f8ab9be7867935eb2ecb5vandwalle mWifiStateMachine.sendMessage(WifiStateMachine.CMD_AUTO_ROAM, 1683b07da189850a4bfa268f8ab9be7867935eb2ecb5vandwalle currentConfiguration.networkId, 1, roamCandidate); 168468fee36dac1dda5c596c00ef33fdbc0962e9ec9fvandwalle found = true; 1685f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1686f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1687b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (VDBG) logDbg("Done attemptAutoJoin status=" + Integer.toString(networkSwitchType)); 168868fee36dac1dda5c596c00ef33fdbc0962e9ec9fvandwalle return found; 1689f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1690f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle} 1691f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1692