1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.server.wifi; 18 19 import android.net.wifi.ScanResult; 20 import android.net.wifi.WifiConfiguration; 21 import android.os.UserHandle; 22 import android.os.UserManager; 23 24 import java.io.FileDescriptor; 25 import java.io.PrintWriter; 26 import java.util.Collection; 27 import java.util.HashMap; 28 import java.util.Iterator; 29 import java.util.Map; 30 31 public class ConfigurationMap { 32 private final Map<Integer, WifiConfiguration> mPerID = new HashMap<>(); 33 34 private final Map<Integer, WifiConfiguration> mPerIDForCurrentUser = new HashMap<>(); 35 private final Map<ScanResultMatchInfo, WifiConfiguration> 36 mScanResultMatchInfoMapForCurrentUser = new HashMap<>(); 37 38 private final UserManager mUserManager; 39 40 private int mCurrentUserId = UserHandle.SYSTEM.getIdentifier(); 41 ConfigurationMap(UserManager userManager)42 ConfigurationMap(UserManager userManager) { 43 mUserManager = userManager; 44 } 45 46 /** Dump internal state for debugging. */ dump(FileDescriptor fd, PrintWriter pw, String[] args)47 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 48 pw.println("mPerId=" + mPerID); 49 pw.println("mPerIDForCurrentUser=" + mPerIDForCurrentUser); 50 pw.println("mScanResultMatchInfoMapForCurrentUser=" 51 + mScanResultMatchInfoMapForCurrentUser); 52 pw.println("mCurrentUserId=" + mCurrentUserId); 53 } 54 55 // RW methods: put(WifiConfiguration config)56 public WifiConfiguration put(WifiConfiguration config) { 57 final WifiConfiguration current = mPerID.put(config.networkId, config); 58 final UserHandle currentUser = UserHandle.of(mCurrentUserId); 59 final UserHandle creatorUser = UserHandle.getUserHandleForUid(config.creatorUid); 60 if (config.shared || currentUser.equals(creatorUser) 61 || mUserManager.isSameProfileGroup(currentUser, creatorUser)) { 62 mPerIDForCurrentUser.put(config.networkId, config); 63 // TODO (b/142035508): Add a more generic fix. This cache should only hold saved 64 // networks. 65 if (!config.fromWifiNetworkSpecifier) { 66 mScanResultMatchInfoMapForCurrentUser.put( 67 ScanResultMatchInfo.fromWifiConfiguration(config), config); 68 } 69 } 70 return current; 71 } 72 remove(int netID)73 public WifiConfiguration remove(int netID) { 74 WifiConfiguration config = mPerID.remove(netID); 75 if (config == null) { 76 return null; 77 } 78 79 mPerIDForCurrentUser.remove(netID); 80 81 Iterator<Map.Entry<ScanResultMatchInfo, WifiConfiguration>> scanResultMatchInfoEntries = 82 mScanResultMatchInfoMapForCurrentUser.entrySet().iterator(); 83 while (scanResultMatchInfoEntries.hasNext()) { 84 if (scanResultMatchInfoEntries.next().getValue().networkId == netID) { 85 scanResultMatchInfoEntries.remove(); 86 break; 87 } 88 } 89 return config; 90 } 91 clear()92 public void clear() { 93 mPerID.clear(); 94 mPerIDForCurrentUser.clear(); 95 mScanResultMatchInfoMapForCurrentUser.clear(); 96 } 97 98 /** 99 * Sets the new foreground user ID. 100 * 101 * @param userId the id of the new foreground user 102 */ setNewUser(int userId)103 public void setNewUser(int userId) { 104 mCurrentUserId = userId; 105 } 106 107 // RO methods: getForAllUsers(int netid)108 public WifiConfiguration getForAllUsers(int netid) { 109 return mPerID.get(netid); 110 } 111 getForCurrentUser(int netid)112 public WifiConfiguration getForCurrentUser(int netid) { 113 return mPerIDForCurrentUser.get(netid); 114 } 115 sizeForAllUsers()116 public int sizeForAllUsers() { 117 return mPerID.size(); 118 } 119 sizeForCurrentUser()120 public int sizeForCurrentUser() { 121 return mPerIDForCurrentUser.size(); 122 } 123 getByConfigKeyForCurrentUser(String key)124 public WifiConfiguration getByConfigKeyForCurrentUser(String key) { 125 if (key == null) { 126 return null; 127 } 128 for (WifiConfiguration config : mPerIDForCurrentUser.values()) { 129 if (config.getKey().equals(key)) { 130 return config; 131 } 132 } 133 return null; 134 } 135 136 /** 137 * Retrieves the |WifiConfiguration| object matching the provided |scanResult| from the internal 138 * map. 139 * Essentially checks if network config and scan result have the same SSID and encryption type. 140 */ getByScanResultForCurrentUser(ScanResult scanResult)141 public WifiConfiguration getByScanResultForCurrentUser(ScanResult scanResult) { 142 return mScanResultMatchInfoMapForCurrentUser.get( 143 ScanResultMatchInfo.fromScanResult(scanResult)); 144 } 145 valuesForAllUsers()146 public Collection<WifiConfiguration> valuesForAllUsers() { 147 return mPerID.values(); 148 } 149 valuesForCurrentUser()150 public Collection<WifiConfiguration> valuesForCurrentUser() { 151 return mPerIDForCurrentUser.values(); 152 } 153 } 154