Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2010 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; |
| 18 | |
| 19 | import android.content.Context; |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 20 | import android.content.ContentResolver; |
| 21 | import android.content.Intent; |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 22 | import android.content.pm.PackageManager; |
Irfan Sheriff | 919aca5 | 2012-06-01 16:44:13 -0700 | [diff] [blame] | 23 | import android.database.ContentObserver; |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 24 | import android.net.nsd.NsdServiceInfo; |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 25 | import android.net.nsd.DnsSdTxtRecord; |
| 26 | import android.net.nsd.INsdManager; |
| 27 | import android.net.nsd.NsdManager; |
| 28 | import android.os.Binder; |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 29 | import android.os.Message; |
| 30 | import android.os.Messenger; |
Dianne Hackborn | 5ac72a2 | 2012-08-29 18:32:08 -0700 | [diff] [blame] | 31 | import android.os.UserHandle; |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 32 | import android.provider.Settings; |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 33 | import android.util.Slog; |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 34 | import android.util.SparseArray; |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 35 | |
| 36 | import java.io.FileDescriptor; |
| 37 | import java.io.PrintWriter; |
Christopher Lane | b72d8b4 | 2014-03-17 16:35:45 -0700 | [diff] [blame] | 38 | import java.io.UnsupportedEncodingException; |
Irfan Sheriff | 817388e | 2012-04-11 14:52:19 -0700 | [diff] [blame] | 39 | import java.net.InetAddress; |
Irfan Sheriff | 817388e | 2012-04-11 14:52:19 -0700 | [diff] [blame] | 40 | import java.util.HashMap; |
Christopher Lane | b72d8b4 | 2014-03-17 16:35:45 -0700 | [diff] [blame] | 41 | import java.util.Locale; |
| 42 | import java.util.Map; |
Irfan Sheriff | 817388e | 2012-04-11 14:52:19 -0700 | [diff] [blame] | 43 | import java.util.concurrent.CountDownLatch; |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 44 | |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 45 | import com.android.internal.util.AsyncChannel; |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 46 | import com.android.internal.util.Protocol; |
| 47 | import com.android.internal.util.State; |
| 48 | import com.android.internal.util.StateMachine; |
Christopher Lane | 771cd65 | 2014-04-14 16:31:27 -0700 | [diff] [blame] | 49 | import com.android.server.NativeDaemonConnector.Command; |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 50 | |
| 51 | /** |
| 52 | * Network Service Discovery Service handles remote service discovery operation requests by |
| 53 | * implementing the INsdManager interface. |
| 54 | * |
| 55 | * @hide |
| 56 | */ |
| 57 | public class NsdService extends INsdManager.Stub { |
| 58 | private static final String TAG = "NsdService"; |
| 59 | private static final String MDNS_TAG = "mDnsConnector"; |
| 60 | |
| 61 | private static final boolean DBG = true; |
| 62 | |
| 63 | private Context mContext; |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 64 | private ContentResolver mContentResolver; |
| 65 | private NsdStateMachine mNsdStateMachine; |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 66 | |
| 67 | /** |
| 68 | * Clients receiving asynchronous messages |
| 69 | */ |
Irfan Sheriff | 817388e | 2012-04-11 14:52:19 -0700 | [diff] [blame] | 70 | private HashMap<Messenger, ClientInfo> mClients = new HashMap<Messenger, ClientInfo>(); |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 71 | |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 72 | /* A map from unique id to client info */ |
| 73 | private SparseArray<ClientInfo> mIdToClientInfoMap= new SparseArray<ClientInfo>(); |
| 74 | |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 75 | private AsyncChannel mReplyChannel = new AsyncChannel(); |
| 76 | |
Irfan Sheriff | 817388e | 2012-04-11 14:52:19 -0700 | [diff] [blame] | 77 | private int INVALID_ID = 0; |
| 78 | private int mUniqueId = 1; |
| 79 | |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 80 | private static final int BASE = Protocol.BASE_NSD_MANAGER; |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 81 | private static final int CMD_TO_STRING_COUNT = NsdManager.RESOLVE_SERVICE - BASE + 1; |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 82 | private static String[] sCmdToString = new String[CMD_TO_STRING_COUNT]; |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 83 | |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 84 | static { |
| 85 | sCmdToString[NsdManager.DISCOVER_SERVICES - BASE] = "DISCOVER"; |
| 86 | sCmdToString[NsdManager.STOP_DISCOVERY - BASE] = "STOP-DISCOVER"; |
| 87 | sCmdToString[NsdManager.REGISTER_SERVICE - BASE] = "REGISTER"; |
| 88 | sCmdToString[NsdManager.UNREGISTER_SERVICE - BASE] = "UNREGISTER"; |
| 89 | sCmdToString[NsdManager.RESOLVE_SERVICE - BASE] = "RESOLVE"; |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 90 | } |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 91 | |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 92 | private static String cmdToString(int cmd) { |
| 93 | cmd -= BASE; |
| 94 | if ((cmd >= 0) && (cmd < sCmdToString.length)) { |
| 95 | return sCmdToString[cmd]; |
| 96 | } else { |
| 97 | return null; |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 98 | } |
| 99 | } |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 100 | |
| 101 | private class NsdStateMachine extends StateMachine { |
| 102 | |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 103 | private final DefaultState mDefaultState = new DefaultState(); |
| 104 | private final DisabledState mDisabledState = new DisabledState(); |
| 105 | private final EnabledState mEnabledState = new EnabledState(); |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 106 | |
| 107 | @Override |
Wink Saville | bbf30dfd | 2012-05-29 12:40:46 -0700 | [diff] [blame] | 108 | protected String getWhatToString(int what) { |
| 109 | return cmdToString(what); |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 110 | } |
| 111 | |
Irfan Sheriff | 919aca5 | 2012-06-01 16:44:13 -0700 | [diff] [blame] | 112 | /** |
| 113 | * Observes the NSD on/off setting, and takes action when changed. |
| 114 | */ |
| 115 | private void registerForNsdSetting() { |
| 116 | ContentObserver contentObserver = new ContentObserver(this.getHandler()) { |
| 117 | @Override |
| 118 | public void onChange(boolean selfChange) { |
| 119 | if (isNsdEnabled()) { |
| 120 | mNsdStateMachine.sendMessage(NsdManager.ENABLE); |
| 121 | } else { |
| 122 | mNsdStateMachine.sendMessage(NsdManager.DISABLE); |
| 123 | } |
| 124 | } |
| 125 | }; |
| 126 | |
| 127 | mContext.getContentResolver().registerContentObserver( |
Jeff Sharkey | 625239a | 2012-09-26 22:03:49 -0700 | [diff] [blame] | 128 | Settings.Global.getUriFor(Settings.Global.NSD_ON), |
Irfan Sheriff | 919aca5 | 2012-06-01 16:44:13 -0700 | [diff] [blame] | 129 | false, contentObserver); |
| 130 | } |
| 131 | |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 132 | NsdStateMachine(String name) { |
| 133 | super(name); |
| 134 | addState(mDefaultState); |
| 135 | addState(mDisabledState, mDefaultState); |
| 136 | addState(mEnabledState, mDefaultState); |
| 137 | if (isNsdEnabled()) { |
| 138 | setInitialState(mEnabledState); |
| 139 | } else { |
| 140 | setInitialState(mDisabledState); |
| 141 | } |
Wink Saville | bbf30dfd | 2012-05-29 12:40:46 -0700 | [diff] [blame] | 142 | setLogRecSize(25); |
Irfan Sheriff | 919aca5 | 2012-06-01 16:44:13 -0700 | [diff] [blame] | 143 | registerForNsdSetting(); |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 144 | } |
| 145 | |
| 146 | class DefaultState extends State { |
| 147 | @Override |
| 148 | public boolean processMessage(Message msg) { |
Dave Platt | f31760c | 2014-03-07 14:48:22 -0800 | [diff] [blame] | 149 | ClientInfo cInfo = null; |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 150 | switch (msg.what) { |
| 151 | case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: |
| 152 | if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { |
| 153 | AsyncChannel c = (AsyncChannel) msg.obj; |
| 154 | if (DBG) Slog.d(TAG, "New client listening to asynchronous messages"); |
| 155 | c.sendMessage(AsyncChannel.CMD_CHANNEL_FULLY_CONNECTED); |
Dave Platt | f31760c | 2014-03-07 14:48:22 -0800 | [diff] [blame] | 156 | cInfo = new ClientInfo(c, msg.replyTo); |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 157 | mClients.put(msg.replyTo, cInfo); |
| 158 | } else { |
| 159 | Slog.e(TAG, "Client connection failure, error=" + msg.arg1); |
| 160 | } |
| 161 | break; |
| 162 | case AsyncChannel.CMD_CHANNEL_DISCONNECTED: |
Dave Platt | f31760c | 2014-03-07 14:48:22 -0800 | [diff] [blame] | 163 | switch (msg.arg1) { |
| 164 | case AsyncChannel.STATUS_SEND_UNSUCCESSFUL: |
| 165 | Slog.e(TAG, "Send failed, client connection lost"); |
| 166 | break; |
| 167 | case AsyncChannel.STATUS_REMOTE_DISCONNECTION: |
| 168 | if (DBG) Slog.d(TAG, "Client disconnected"); |
| 169 | break; |
| 170 | default: |
| 171 | if (DBG) Slog.d(TAG, "Client connection lost with reason: " + msg.arg1); |
| 172 | break; |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 173 | } |
Dave Platt | f31760c | 2014-03-07 14:48:22 -0800 | [diff] [blame] | 174 | cInfo = mClients.get(msg.replyTo); |
| 175 | if (cInfo != null) { |
| 176 | cInfo.expungeAllRequests(); |
| 177 | mClients.remove(msg.replyTo); |
| 178 | } |
| 179 | //Last client |
| 180 | if (mClients.size() == 0) { |
| 181 | stopMDnsDaemon(); |
| 182 | } |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 183 | break; |
| 184 | case AsyncChannel.CMD_CHANNEL_FULL_CONNECTION: |
| 185 | AsyncChannel ac = new AsyncChannel(); |
| 186 | ac.connect(mContext, getHandler(), msg.replyTo); |
| 187 | break; |
| 188 | case NsdManager.DISCOVER_SERVICES: |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 189 | replyToMessage(msg, NsdManager.DISCOVER_SERVICES_FAILED, |
| 190 | NsdManager.FAILURE_INTERNAL_ERROR); |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 191 | break; |
| 192 | case NsdManager.STOP_DISCOVERY: |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 193 | replyToMessage(msg, NsdManager.STOP_DISCOVERY_FAILED, |
| 194 | NsdManager.FAILURE_INTERNAL_ERROR); |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 195 | break; |
| 196 | case NsdManager.REGISTER_SERVICE: |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 197 | replyToMessage(msg, NsdManager.REGISTER_SERVICE_FAILED, |
| 198 | NsdManager.FAILURE_INTERNAL_ERROR); |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 199 | break; |
| 200 | case NsdManager.UNREGISTER_SERVICE: |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 201 | replyToMessage(msg, NsdManager.UNREGISTER_SERVICE_FAILED, |
| 202 | NsdManager.FAILURE_INTERNAL_ERROR); |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 203 | break; |
| 204 | case NsdManager.RESOLVE_SERVICE: |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 205 | replyToMessage(msg, NsdManager.RESOLVE_SERVICE_FAILED, |
| 206 | NsdManager.FAILURE_INTERNAL_ERROR); |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 207 | break; |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 208 | case NsdManager.NATIVE_DAEMON_EVENT: |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 209 | default: |
| 210 | Slog.e(TAG, "Unhandled " + msg); |
| 211 | return NOT_HANDLED; |
| 212 | } |
| 213 | return HANDLED; |
| 214 | } |
| 215 | } |
| 216 | |
| 217 | class DisabledState extends State { |
| 218 | @Override |
| 219 | public void enter() { |
| 220 | sendNsdStateChangeBroadcast(false); |
| 221 | } |
| 222 | |
| 223 | @Override |
| 224 | public boolean processMessage(Message msg) { |
| 225 | switch (msg.what) { |
| 226 | case NsdManager.ENABLE: |
| 227 | transitionTo(mEnabledState); |
| 228 | break; |
| 229 | default: |
| 230 | return NOT_HANDLED; |
| 231 | } |
| 232 | return HANDLED; |
| 233 | } |
| 234 | } |
| 235 | |
| 236 | class EnabledState extends State { |
| 237 | @Override |
| 238 | public void enter() { |
| 239 | sendNsdStateChangeBroadcast(true); |
| 240 | if (mClients.size() > 0) { |
| 241 | startMDnsDaemon(); |
| 242 | } |
| 243 | } |
| 244 | |
| 245 | @Override |
| 246 | public void exit() { |
| 247 | if (mClients.size() > 0) { |
| 248 | stopMDnsDaemon(); |
| 249 | } |
| 250 | } |
| 251 | |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 252 | private boolean requestLimitReached(ClientInfo clientInfo) { |
| 253 | if (clientInfo.mClientIds.size() >= ClientInfo.MAX_LIMIT) { |
| 254 | if (DBG) Slog.d(TAG, "Exceeded max outstanding requests " + clientInfo); |
| 255 | return true; |
| 256 | } |
| 257 | return false; |
| 258 | } |
| 259 | |
Dave Platt | f31760c | 2014-03-07 14:48:22 -0800 | [diff] [blame] | 260 | private void storeRequestMap(int clientId, int globalId, ClientInfo clientInfo, int what) { |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 261 | clientInfo.mClientIds.put(clientId, globalId); |
Dave Platt | f31760c | 2014-03-07 14:48:22 -0800 | [diff] [blame] | 262 | clientInfo.mClientRequests.put(clientId, what); |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 263 | mIdToClientInfoMap.put(globalId, clientInfo); |
| 264 | } |
| 265 | |
| 266 | private void removeRequestMap(int clientId, int globalId, ClientInfo clientInfo) { |
| 267 | clientInfo.mClientIds.remove(clientId); |
Dave Platt | f31760c | 2014-03-07 14:48:22 -0800 | [diff] [blame] | 268 | clientInfo.mClientRequests.remove(clientId); |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 269 | mIdToClientInfoMap.remove(globalId); |
| 270 | } |
| 271 | |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 272 | @Override |
| 273 | public boolean processMessage(Message msg) { |
| 274 | ClientInfo clientInfo; |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 275 | NsdServiceInfo servInfo; |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 276 | boolean result = HANDLED; |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 277 | int id; |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 278 | switch (msg.what) { |
| 279 | case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: |
| 280 | //First client |
| 281 | if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL && |
| 282 | mClients.size() == 0) { |
| 283 | startMDnsDaemon(); |
| 284 | } |
| 285 | result = NOT_HANDLED; |
| 286 | break; |
| 287 | case AsyncChannel.CMD_CHANNEL_DISCONNECTED: |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 288 | result = NOT_HANDLED; |
| 289 | break; |
| 290 | case NsdManager.DISABLE: |
| 291 | //TODO: cleanup clients |
| 292 | transitionTo(mDisabledState); |
| 293 | break; |
| 294 | case NsdManager.DISCOVER_SERVICES: |
| 295 | if (DBG) Slog.d(TAG, "Discover services"); |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 296 | servInfo = (NsdServiceInfo) msg.obj; |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 297 | clientInfo = mClients.get(msg.replyTo); |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 298 | |
| 299 | if (requestLimitReached(clientInfo)) { |
| 300 | replyToMessage(msg, NsdManager.DISCOVER_SERVICES_FAILED, |
| 301 | NsdManager.FAILURE_MAX_LIMIT); |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 302 | break; |
| 303 | } |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 304 | |
| 305 | id = getUniqueId(); |
| 306 | if (discoverServices(id, servInfo.getServiceType())) { |
| 307 | if (DBG) { |
| 308 | Slog.d(TAG, "Discover " + msg.arg2 + " " + id + |
| 309 | servInfo.getServiceType()); |
| 310 | } |
Dave Platt | f31760c | 2014-03-07 14:48:22 -0800 | [diff] [blame] | 311 | storeRequestMap(msg.arg2, id, clientInfo, msg.what); |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 312 | replyToMessage(msg, NsdManager.DISCOVER_SERVICES_STARTED, servInfo); |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 313 | } else { |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 314 | stopServiceDiscovery(id); |
| 315 | replyToMessage(msg, NsdManager.DISCOVER_SERVICES_FAILED, |
| 316 | NsdManager.FAILURE_INTERNAL_ERROR); |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 317 | } |
| 318 | break; |
| 319 | case NsdManager.STOP_DISCOVERY: |
| 320 | if (DBG) Slog.d(TAG, "Stop service discovery"); |
| 321 | clientInfo = mClients.get(msg.replyTo); |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 322 | |
| 323 | try { |
| 324 | id = clientInfo.mClientIds.get(msg.arg2).intValue(); |
| 325 | } catch (NullPointerException e) { |
| 326 | replyToMessage(msg, NsdManager.STOP_DISCOVERY_FAILED, |
| 327 | NsdManager.FAILURE_INTERNAL_ERROR); |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 328 | break; |
| 329 | } |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 330 | removeRequestMap(msg.arg2, id, clientInfo); |
| 331 | if (stopServiceDiscovery(id)) { |
| 332 | replyToMessage(msg, NsdManager.STOP_DISCOVERY_SUCCEEDED); |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 333 | } else { |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 334 | replyToMessage(msg, NsdManager.STOP_DISCOVERY_FAILED, |
| 335 | NsdManager.FAILURE_INTERNAL_ERROR); |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 336 | } |
| 337 | break; |
| 338 | case NsdManager.REGISTER_SERVICE: |
| 339 | if (DBG) Slog.d(TAG, "Register service"); |
| 340 | clientInfo = mClients.get(msg.replyTo); |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 341 | if (requestLimitReached(clientInfo)) { |
| 342 | replyToMessage(msg, NsdManager.REGISTER_SERVICE_FAILED, |
| 343 | NsdManager.FAILURE_MAX_LIMIT); |
| 344 | break; |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 345 | } |
| 346 | |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 347 | id = getUniqueId(); |
| 348 | if (registerService(id, (NsdServiceInfo) msg.obj)) { |
| 349 | if (DBG) Slog.d(TAG, "Register " + msg.arg2 + " " + id); |
Dave Platt | f31760c | 2014-03-07 14:48:22 -0800 | [diff] [blame] | 350 | storeRequestMap(msg.arg2, id, clientInfo, msg.what); |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 351 | // Return success after mDns reports success |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 352 | } else { |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 353 | unregisterService(id); |
| 354 | replyToMessage(msg, NsdManager.REGISTER_SERVICE_FAILED, |
| 355 | NsdManager.FAILURE_INTERNAL_ERROR); |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 356 | } |
| 357 | break; |
| 358 | case NsdManager.UNREGISTER_SERVICE: |
| 359 | if (DBG) Slog.d(TAG, "unregister service"); |
| 360 | clientInfo = mClients.get(msg.replyTo); |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 361 | try { |
| 362 | id = clientInfo.mClientIds.get(msg.arg2).intValue(); |
| 363 | } catch (NullPointerException e) { |
| 364 | replyToMessage(msg, NsdManager.UNREGISTER_SERVICE_FAILED, |
| 365 | NsdManager.FAILURE_INTERNAL_ERROR); |
| 366 | break; |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 367 | } |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 368 | removeRequestMap(msg.arg2, id, clientInfo); |
| 369 | if (unregisterService(id)) { |
| 370 | replyToMessage(msg, NsdManager.UNREGISTER_SERVICE_SUCCEEDED); |
| 371 | } else { |
| 372 | replyToMessage(msg, NsdManager.UNREGISTER_SERVICE_FAILED, |
| 373 | NsdManager.FAILURE_INTERNAL_ERROR); |
| 374 | } |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 375 | break; |
| 376 | case NsdManager.RESOLVE_SERVICE: |
| 377 | if (DBG) Slog.d(TAG, "Resolve service"); |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 378 | servInfo = (NsdServiceInfo) msg.obj; |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 379 | clientInfo = mClients.get(msg.replyTo); |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 380 | |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 381 | |
| 382 | if (clientInfo.mResolvedService != null) { |
| 383 | replyToMessage(msg, NsdManager.RESOLVE_SERVICE_FAILED, |
| 384 | NsdManager.FAILURE_ALREADY_ACTIVE); |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 385 | break; |
| 386 | } |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 387 | |
| 388 | id = getUniqueId(); |
| 389 | if (resolveService(id, servInfo)) { |
| 390 | clientInfo.mResolvedService = new NsdServiceInfo(); |
Dave Platt | f31760c | 2014-03-07 14:48:22 -0800 | [diff] [blame] | 391 | storeRequestMap(msg.arg2, id, clientInfo, msg.what); |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 392 | } else { |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 393 | replyToMessage(msg, NsdManager.RESOLVE_SERVICE_FAILED, |
| 394 | NsdManager.FAILURE_INTERNAL_ERROR); |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 395 | } |
| 396 | break; |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 397 | case NsdManager.NATIVE_DAEMON_EVENT: |
| 398 | NativeEvent event = (NativeEvent) msg.obj; |
Sreeram Ramachandran | ef12884 | 2014-09-03 15:45:59 -0700 | [diff] [blame] | 399 | if (!handleNativeEvent(event.code, event.raw, event.cooked)) { |
Vairavan Srinivasan | 6727e73 | 2012-08-05 13:14:12 -0700 | [diff] [blame] | 400 | result = NOT_HANDLED; |
| 401 | } |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 402 | break; |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 403 | default: |
| 404 | result = NOT_HANDLED; |
| 405 | break; |
| 406 | } |
| 407 | return result; |
| 408 | } |
Vairavan Srinivasan | 6727e73 | 2012-08-05 13:14:12 -0700 | [diff] [blame] | 409 | |
| 410 | private boolean handleNativeEvent(int code, String raw, String[] cooked) { |
| 411 | boolean handled = true; |
| 412 | NsdServiceInfo servInfo; |
| 413 | int id = Integer.parseInt(cooked[1]); |
| 414 | ClientInfo clientInfo = mIdToClientInfoMap.get(id); |
| 415 | if (clientInfo == null) { |
| 416 | Slog.e(TAG, "Unique id with no client mapping: " + id); |
| 417 | handled = false; |
| 418 | return handled; |
| 419 | } |
| 420 | |
| 421 | /* This goes in response as msg.arg2 */ |
Christopher Lane | 5a57790 | 2014-04-25 18:39:07 -0700 | [diff] [blame] | 422 | int clientId = clientInfo.getClientId(id); |
| 423 | if (clientId < 0) { |
Vinit Deshapnde | 8ed09e8 | 2013-06-25 19:45:03 -0700 | [diff] [blame] | 424 | // This can happen because of race conditions. For example, |
| 425 | // SERVICE_FOUND may race with STOP_SERVICE_DISCOVERY, |
| 426 | // and we may get in this situation. |
| 427 | Slog.d(TAG, "Notification for a listener that is no longer active: " + id); |
| 428 | handled = false; |
| 429 | return handled; |
Vairavan Srinivasan | 6727e73 | 2012-08-05 13:14:12 -0700 | [diff] [blame] | 430 | } |
Vinit Deshapnde | 8ed09e8 | 2013-06-25 19:45:03 -0700 | [diff] [blame] | 431 | |
Vairavan Srinivasan | 6727e73 | 2012-08-05 13:14:12 -0700 | [diff] [blame] | 432 | switch (code) { |
| 433 | case NativeResponseCode.SERVICE_FOUND: |
| 434 | /* NNN uniqueId serviceName regType domain */ |
| 435 | if (DBG) Slog.d(TAG, "SERVICE_FOUND Raw: " + raw); |
Christopher Lane | b72d8b4 | 2014-03-17 16:35:45 -0700 | [diff] [blame] | 436 | servInfo = new NsdServiceInfo(cooked[2], cooked[3]); |
Vairavan Srinivasan | 6727e73 | 2012-08-05 13:14:12 -0700 | [diff] [blame] | 437 | clientInfo.mChannel.sendMessage(NsdManager.SERVICE_FOUND, 0, |
| 438 | clientId, servInfo); |
| 439 | break; |
| 440 | case NativeResponseCode.SERVICE_LOST: |
| 441 | /* NNN uniqueId serviceName regType domain */ |
| 442 | if (DBG) Slog.d(TAG, "SERVICE_LOST Raw: " + raw); |
Christopher Lane | b72d8b4 | 2014-03-17 16:35:45 -0700 | [diff] [blame] | 443 | servInfo = new NsdServiceInfo(cooked[2], cooked[3]); |
Vairavan Srinivasan | 6727e73 | 2012-08-05 13:14:12 -0700 | [diff] [blame] | 444 | clientInfo.mChannel.sendMessage(NsdManager.SERVICE_LOST, 0, |
| 445 | clientId, servInfo); |
| 446 | break; |
| 447 | case NativeResponseCode.SERVICE_DISCOVERY_FAILED: |
| 448 | /* NNN uniqueId errorCode */ |
| 449 | if (DBG) Slog.d(TAG, "SERVICE_DISC_FAILED Raw: " + raw); |
| 450 | clientInfo.mChannel.sendMessage(NsdManager.DISCOVER_SERVICES_FAILED, |
| 451 | NsdManager.FAILURE_INTERNAL_ERROR, clientId); |
| 452 | break; |
| 453 | case NativeResponseCode.SERVICE_REGISTERED: |
| 454 | /* NNN regId serviceName regType */ |
| 455 | if (DBG) Slog.d(TAG, "SERVICE_REGISTERED Raw: " + raw); |
Christopher Lane | b72d8b4 | 2014-03-17 16:35:45 -0700 | [diff] [blame] | 456 | servInfo = new NsdServiceInfo(cooked[2], null); |
Vairavan Srinivasan | 6727e73 | 2012-08-05 13:14:12 -0700 | [diff] [blame] | 457 | clientInfo.mChannel.sendMessage(NsdManager.REGISTER_SERVICE_SUCCEEDED, |
| 458 | id, clientId, servInfo); |
| 459 | break; |
| 460 | case NativeResponseCode.SERVICE_REGISTRATION_FAILED: |
| 461 | /* NNN regId errorCode */ |
| 462 | if (DBG) Slog.d(TAG, "SERVICE_REGISTER_FAILED Raw: " + raw); |
| 463 | clientInfo.mChannel.sendMessage(NsdManager.REGISTER_SERVICE_FAILED, |
| 464 | NsdManager.FAILURE_INTERNAL_ERROR, clientId); |
| 465 | break; |
| 466 | case NativeResponseCode.SERVICE_UPDATED: |
| 467 | /* NNN regId */ |
| 468 | break; |
| 469 | case NativeResponseCode.SERVICE_UPDATE_FAILED: |
| 470 | /* NNN regId errorCode */ |
| 471 | break; |
| 472 | case NativeResponseCode.SERVICE_RESOLVED: |
| 473 | /* NNN resolveId fullName hostName port txtlen txtdata */ |
| 474 | if (DBG) Slog.d(TAG, "SERVICE_RESOLVED Raw: " + raw); |
Sreeram Ramachandran | ef12884 | 2014-09-03 15:45:59 -0700 | [diff] [blame] | 475 | int index = 0; |
| 476 | while (index < cooked[2].length() && cooked[2].charAt(index) != '.') { |
| 477 | if (cooked[2].charAt(index) == '\\') { |
| 478 | ++index; |
| 479 | } |
| 480 | ++index; |
| 481 | } |
| 482 | if (index >= cooked[2].length()) { |
Vairavan Srinivasan | 6727e73 | 2012-08-05 13:14:12 -0700 | [diff] [blame] | 483 | Slog.e(TAG, "Invalid service found " + raw); |
| 484 | break; |
| 485 | } |
| 486 | String name = cooked[2].substring(0, index); |
| 487 | String rest = cooked[2].substring(index); |
| 488 | String type = rest.replace(".local.", ""); |
| 489 | |
Sreeram Ramachandran | ef12884 | 2014-09-03 15:45:59 -0700 | [diff] [blame] | 490 | name = unescape(name); |
| 491 | |
Vairavan Srinivasan | 6727e73 | 2012-08-05 13:14:12 -0700 | [diff] [blame] | 492 | clientInfo.mResolvedService.setServiceName(name); |
| 493 | clientInfo.mResolvedService.setServiceType(type); |
| 494 | clientInfo.mResolvedService.setPort(Integer.parseInt(cooked[4])); |
| 495 | |
| 496 | stopResolveService(id); |
Vinit Deshapnde | 4038724 | 2013-11-12 15:36:37 -0800 | [diff] [blame] | 497 | removeRequestMap(clientId, id, clientInfo); |
| 498 | |
| 499 | int id2 = getUniqueId(); |
| 500 | if (getAddrInfo(id2, cooked[3])) { |
Dave Platt | f31760c | 2014-03-07 14:48:22 -0800 | [diff] [blame] | 501 | storeRequestMap(clientId, id2, clientInfo, NsdManager.RESOLVE_SERVICE); |
Vinit Deshapnde | 4038724 | 2013-11-12 15:36:37 -0800 | [diff] [blame] | 502 | } else { |
Vairavan Srinivasan | 6727e73 | 2012-08-05 13:14:12 -0700 | [diff] [blame] | 503 | clientInfo.mChannel.sendMessage(NsdManager.RESOLVE_SERVICE_FAILED, |
| 504 | NsdManager.FAILURE_INTERNAL_ERROR, clientId); |
Vairavan Srinivasan | 6727e73 | 2012-08-05 13:14:12 -0700 | [diff] [blame] | 505 | clientInfo.mResolvedService = null; |
| 506 | } |
| 507 | break; |
| 508 | case NativeResponseCode.SERVICE_RESOLUTION_FAILED: |
| 509 | /* NNN resolveId errorCode */ |
| 510 | if (DBG) Slog.d(TAG, "SERVICE_RESOLVE_FAILED Raw: " + raw); |
| 511 | stopResolveService(id); |
| 512 | removeRequestMap(clientId, id, clientInfo); |
| 513 | clientInfo.mResolvedService = null; |
| 514 | clientInfo.mChannel.sendMessage(NsdManager.RESOLVE_SERVICE_FAILED, |
| 515 | NsdManager.FAILURE_INTERNAL_ERROR, clientId); |
| 516 | break; |
| 517 | case NativeResponseCode.SERVICE_GET_ADDR_FAILED: |
| 518 | /* NNN resolveId errorCode */ |
| 519 | stopGetAddrInfo(id); |
| 520 | removeRequestMap(clientId, id, clientInfo); |
| 521 | clientInfo.mResolvedService = null; |
| 522 | if (DBG) Slog.d(TAG, "SERVICE_RESOLVE_FAILED Raw: " + raw); |
| 523 | clientInfo.mChannel.sendMessage(NsdManager.RESOLVE_SERVICE_FAILED, |
| 524 | NsdManager.FAILURE_INTERNAL_ERROR, clientId); |
| 525 | break; |
| 526 | case NativeResponseCode.SERVICE_GET_ADDR_SUCCESS: |
| 527 | /* NNN resolveId hostname ttl addr */ |
| 528 | if (DBG) Slog.d(TAG, "SERVICE_GET_ADDR_SUCCESS Raw: " + raw); |
| 529 | try { |
| 530 | clientInfo.mResolvedService.setHost(InetAddress.getByName(cooked[4])); |
| 531 | clientInfo.mChannel.sendMessage(NsdManager.RESOLVE_SERVICE_SUCCEEDED, |
| 532 | 0, clientId, clientInfo.mResolvedService); |
| 533 | } catch (java.net.UnknownHostException e) { |
| 534 | clientInfo.mChannel.sendMessage(NsdManager.RESOLVE_SERVICE_FAILED, |
| 535 | NsdManager.FAILURE_INTERNAL_ERROR, clientId); |
| 536 | } |
| 537 | stopGetAddrInfo(id); |
| 538 | removeRequestMap(clientId, id, clientInfo); |
| 539 | clientInfo.mResolvedService = null; |
| 540 | break; |
| 541 | default: |
| 542 | handled = false; |
| 543 | break; |
| 544 | } |
| 545 | return handled; |
| 546 | } |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 547 | } |
| 548 | } |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 549 | |
Sreeram Ramachandran | ef12884 | 2014-09-03 15:45:59 -0700 | [diff] [blame] | 550 | private String unescape(String s) { |
| 551 | StringBuilder sb = new StringBuilder(s.length()); |
| 552 | for (int i = 0; i < s.length(); ++i) { |
| 553 | char c = s.charAt(i); |
| 554 | if (c == '\\') { |
| 555 | if (++i >= s.length()) { |
| 556 | Slog.e(TAG, "Unexpected end of escape sequence in: " + s); |
| 557 | break; |
| 558 | } |
| 559 | c = s.charAt(i); |
| 560 | if (c != '.' && c != '\\') { |
| 561 | if (i + 2 >= s.length()) { |
| 562 | Slog.e(TAG, "Unexpected end of escape sequence in: " + s); |
| 563 | break; |
| 564 | } |
| 565 | c = (char) ((c-'0') * 100 + (s.charAt(i+1)-'0') * 10 + (s.charAt(i+2)-'0')); |
| 566 | i += 2; |
| 567 | } |
| 568 | } |
| 569 | sb.append(c); |
| 570 | } |
| 571 | return sb.toString(); |
| 572 | } |
| 573 | |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 574 | private NativeDaemonConnector mNativeConnector; |
| 575 | private final CountDownLatch mNativeDaemonConnected = new CountDownLatch(1); |
| 576 | |
| 577 | private NsdService(Context context) { |
| 578 | mContext = context; |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 579 | mContentResolver = context.getContentResolver(); |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 580 | |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 581 | mNativeConnector = new NativeDaemonConnector(new NativeCallbackReceiver(), "mdns", 10, |
Dianne Hackborn | 77b987f | 2014-02-26 16:20:52 -0800 | [diff] [blame] | 582 | MDNS_TAG, 25, null); |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 583 | |
| 584 | mNsdStateMachine = new NsdStateMachine(TAG); |
| 585 | mNsdStateMachine.start(); |
| 586 | |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 587 | Thread th = new Thread(mNativeConnector, MDNS_TAG); |
| 588 | th.start(); |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 589 | } |
| 590 | |
| 591 | public static NsdService create(Context context) throws InterruptedException { |
| 592 | NsdService service = new NsdService(context); |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 593 | service.mNativeDaemonConnected.await(); |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 594 | return service; |
| 595 | } |
| 596 | |
| 597 | public Messenger getMessenger() { |
Irfan Sheriff | 9278467 | 2012-04-13 12:15:41 -0700 | [diff] [blame] | 598 | mContext.enforceCallingOrSelfPermission(android.Manifest.permission.INTERNET, |
| 599 | "NsdService"); |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 600 | return new Messenger(mNsdStateMachine.getHandler()); |
| 601 | } |
| 602 | |
| 603 | public void setEnabled(boolean enable) { |
| 604 | mContext.enforceCallingOrSelfPermission(android.Manifest.permission.CONNECTIVITY_INTERNAL, |
| 605 | "NsdService"); |
Jeff Sharkey | 625239a | 2012-09-26 22:03:49 -0700 | [diff] [blame] | 606 | Settings.Global.putInt(mContentResolver, Settings.Global.NSD_ON, enable ? 1 : 0); |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 607 | if (enable) { |
| 608 | mNsdStateMachine.sendMessage(NsdManager.ENABLE); |
| 609 | } else { |
| 610 | mNsdStateMachine.sendMessage(NsdManager.DISABLE); |
| 611 | } |
| 612 | } |
| 613 | |
| 614 | private void sendNsdStateChangeBroadcast(boolean enabled) { |
Irfan Sheriff | 54ac7a5 | 2012-04-19 10:26:34 -0700 | [diff] [blame] | 615 | final Intent intent = new Intent(NsdManager.ACTION_NSD_STATE_CHANGED); |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 616 | intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); |
| 617 | if (enabled) { |
| 618 | intent.putExtra(NsdManager.EXTRA_NSD_STATE, NsdManager.NSD_STATE_ENABLED); |
| 619 | } else { |
| 620 | intent.putExtra(NsdManager.EXTRA_NSD_STATE, NsdManager.NSD_STATE_DISABLED); |
| 621 | } |
Dianne Hackborn | 5ac72a2 | 2012-08-29 18:32:08 -0700 | [diff] [blame] | 622 | mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 623 | } |
| 624 | |
| 625 | private boolean isNsdEnabled() { |
Jeff Sharkey | 625239a | 2012-09-26 22:03:49 -0700 | [diff] [blame] | 626 | boolean ret = Settings.Global.getInt(mContentResolver, Settings.Global.NSD_ON, 1) == 1; |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 627 | if (DBG) Slog.d(TAG, "Network service discovery enabled " + ret); |
| 628 | return ret; |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 629 | } |
| 630 | |
Irfan Sheriff | 817388e | 2012-04-11 14:52:19 -0700 | [diff] [blame] | 631 | private int getUniqueId() { |
| 632 | if (++mUniqueId == INVALID_ID) return ++mUniqueId; |
| 633 | return mUniqueId; |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 634 | } |
| 635 | |
Sreeram Ramachandran | 03666c7 | 2014-07-19 23:21:46 -0700 | [diff] [blame] | 636 | /* These should be in sync with system/netd/server/ResponseCode.h */ |
Irfan Sheriff | 817388e | 2012-04-11 14:52:19 -0700 | [diff] [blame] | 637 | class NativeResponseCode { |
| 638 | public static final int SERVICE_DISCOVERY_FAILED = 602; |
| 639 | public static final int SERVICE_FOUND = 603; |
| 640 | public static final int SERVICE_LOST = 604; |
| 641 | |
| 642 | public static final int SERVICE_REGISTRATION_FAILED = 605; |
| 643 | public static final int SERVICE_REGISTERED = 606; |
| 644 | |
| 645 | public static final int SERVICE_RESOLUTION_FAILED = 607; |
| 646 | public static final int SERVICE_RESOLVED = 608; |
| 647 | |
| 648 | public static final int SERVICE_UPDATED = 609; |
| 649 | public static final int SERVICE_UPDATE_FAILED = 610; |
| 650 | |
| 651 | public static final int SERVICE_GET_ADDR_FAILED = 611; |
| 652 | public static final int SERVICE_GET_ADDR_SUCCESS = 612; |
| 653 | } |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 654 | |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 655 | private class NativeEvent { |
Vairavan Srinivasan | 6727e73 | 2012-08-05 13:14:12 -0700 | [diff] [blame] | 656 | final int code; |
| 657 | final String raw; |
Sreeram Ramachandran | ef12884 | 2014-09-03 15:45:59 -0700 | [diff] [blame] | 658 | final String[] cooked; |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 659 | |
Sreeram Ramachandran | ef12884 | 2014-09-03 15:45:59 -0700 | [diff] [blame] | 660 | NativeEvent(int code, String raw, String[] cooked) { |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 661 | this.code = code; |
| 662 | this.raw = raw; |
Sreeram Ramachandran | ef12884 | 2014-09-03 15:45:59 -0700 | [diff] [blame] | 663 | this.cooked = cooked; |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 664 | } |
| 665 | } |
| 666 | |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 667 | class NativeCallbackReceiver implements INativeDaemonConnectorCallbacks { |
| 668 | public void onDaemonConnected() { |
| 669 | mNativeDaemonConnected.countDown(); |
| 670 | } |
| 671 | |
Dianne Hackborn | 77b987f | 2014-02-26 16:20:52 -0800 | [diff] [blame] | 672 | public boolean onCheckHoldWakeLock(int code) { |
| 673 | return false; |
| 674 | } |
| 675 | |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 676 | public boolean onEvent(int code, String raw, String[] cooked) { |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 677 | // TODO: NDC translates a message to a callback, we could enhance NDC to |
| 678 | // directly interact with a state machine through messages |
Sreeram Ramachandran | ef12884 | 2014-09-03 15:45:59 -0700 | [diff] [blame] | 679 | NativeEvent event = new NativeEvent(code, raw, cooked); |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 680 | mNsdStateMachine.sendMessage(NsdManager.NATIVE_DAEMON_EVENT, event); |
| 681 | return true; |
| 682 | } |
| 683 | } |
Irfan Sheriff | 817388e | 2012-04-11 14:52:19 -0700 | [diff] [blame] | 684 | |
Irfan Sheriff | 817388e | 2012-04-11 14:52:19 -0700 | [diff] [blame] | 685 | private boolean startMDnsDaemon() { |
| 686 | if (DBG) Slog.d(TAG, "startMDnsDaemon"); |
| 687 | try { |
| 688 | mNativeConnector.execute("mdnssd", "start-service"); |
| 689 | } catch(NativeDaemonConnectorException e) { |
| 690 | Slog.e(TAG, "Failed to start daemon" + e); |
| 691 | return false; |
| 692 | } |
| 693 | return true; |
| 694 | } |
| 695 | |
| 696 | private boolean stopMDnsDaemon() { |
| 697 | if (DBG) Slog.d(TAG, "stopMDnsDaemon"); |
| 698 | try { |
| 699 | mNativeConnector.execute("mdnssd", "stop-service"); |
| 700 | } catch(NativeDaemonConnectorException e) { |
| 701 | Slog.e(TAG, "Failed to start daemon" + e); |
| 702 | return false; |
| 703 | } |
| 704 | return true; |
| 705 | } |
| 706 | |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 707 | private boolean registerService(int regId, NsdServiceInfo service) { |
Irfan Sheriff | 817388e | 2012-04-11 14:52:19 -0700 | [diff] [blame] | 708 | if (DBG) Slog.d(TAG, "registerService: " + regId + " " + service); |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 709 | try { |
Christopher Lane | b72d8b4 | 2014-03-17 16:35:45 -0700 | [diff] [blame] | 710 | Command cmd = new Command("mdnssd", "register", regId, service.getServiceName(), |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 711 | service.getServiceType(), service.getPort()); |
Christopher Lane | b72d8b4 | 2014-03-17 16:35:45 -0700 | [diff] [blame] | 712 | |
| 713 | // Add TXT records as additional arguments. |
| 714 | Map<String, byte[]> txtRecords = service.getAttributes(); |
| 715 | for (String key : txtRecords.keySet()) { |
| 716 | try { |
| 717 | // TODO: Send encoded TXT record as bytes once NDC/netd supports binary data. |
Christopher Lane | 0f35cdd | 2014-09-13 11:13:39 -0700 | [diff] [blame] | 718 | byte[] recordValue = txtRecords.get(key); |
Christopher Lane | b72d8b4 | 2014-03-17 16:35:45 -0700 | [diff] [blame] | 719 | cmd.appendArg(String.format(Locale.US, "%s=%s", key, |
Christopher Lane | 0f35cdd | 2014-09-13 11:13:39 -0700 | [diff] [blame] | 720 | recordValue != null ? new String(recordValue, "UTF_8") : "")); |
Christopher Lane | b72d8b4 | 2014-03-17 16:35:45 -0700 | [diff] [blame] | 721 | } catch (UnsupportedEncodingException e) { |
| 722 | Slog.e(TAG, "Failed to encode txtRecord " + e); |
| 723 | } |
| 724 | } |
| 725 | |
| 726 | mNativeConnector.execute(cmd); |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 727 | } catch(NativeDaemonConnectorException e) { |
Irfan Sheriff | 817388e | 2012-04-11 14:52:19 -0700 | [diff] [blame] | 728 | Slog.e(TAG, "Failed to execute registerService " + e); |
| 729 | return false; |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 730 | } |
Irfan Sheriff | 817388e | 2012-04-11 14:52:19 -0700 | [diff] [blame] | 731 | return true; |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 732 | } |
| 733 | |
Irfan Sheriff | 817388e | 2012-04-11 14:52:19 -0700 | [diff] [blame] | 734 | private boolean unregisterService(int regId) { |
| 735 | if (DBG) Slog.d(TAG, "unregisterService: " + regId); |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 736 | try { |
Irfan Sheriff | 817388e | 2012-04-11 14:52:19 -0700 | [diff] [blame] | 737 | mNativeConnector.execute("mdnssd", "stop-register", regId); |
| 738 | } catch(NativeDaemonConnectorException e) { |
| 739 | Slog.e(TAG, "Failed to execute unregisterService " + e); |
| 740 | return false; |
| 741 | } |
| 742 | return true; |
| 743 | } |
| 744 | |
| 745 | private boolean updateService(int regId, DnsSdTxtRecord t) { |
| 746 | if (DBG) Slog.d(TAG, "updateService: " + regId + " " + t); |
| 747 | try { |
| 748 | if (t == null) return false; |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 749 | mNativeConnector.execute("mdnssd", "update", regId, t.size(), t.getRawData()); |
| 750 | } catch(NativeDaemonConnectorException e) { |
Irfan Sheriff | 817388e | 2012-04-11 14:52:19 -0700 | [diff] [blame] | 751 | Slog.e(TAG, "Failed to updateServices " + e); |
| 752 | return false; |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 753 | } |
Irfan Sheriff | 817388e | 2012-04-11 14:52:19 -0700 | [diff] [blame] | 754 | return true; |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 755 | } |
| 756 | |
Irfan Sheriff | 817388e | 2012-04-11 14:52:19 -0700 | [diff] [blame] | 757 | private boolean discoverServices(int discoveryId, String serviceType) { |
| 758 | if (DBG) Slog.d(TAG, "discoverServices: " + discoveryId + " " + serviceType); |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 759 | try { |
| 760 | mNativeConnector.execute("mdnssd", "discover", discoveryId, serviceType); |
| 761 | } catch(NativeDaemonConnectorException e) { |
Irfan Sheriff | 817388e | 2012-04-11 14:52:19 -0700 | [diff] [blame] | 762 | Slog.e(TAG, "Failed to discoverServices " + e); |
| 763 | return false; |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 764 | } |
Irfan Sheriff | 817388e | 2012-04-11 14:52:19 -0700 | [diff] [blame] | 765 | return true; |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 766 | } |
| 767 | |
Irfan Sheriff | 817388e | 2012-04-11 14:52:19 -0700 | [diff] [blame] | 768 | private boolean stopServiceDiscovery(int discoveryId) { |
| 769 | if (DBG) Slog.d(TAG, "stopServiceDiscovery: " + discoveryId); |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 770 | try { |
Irfan Sheriff | 817388e | 2012-04-11 14:52:19 -0700 | [diff] [blame] | 771 | mNativeConnector.execute("mdnssd", "stop-discover", discoveryId); |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 772 | } catch(NativeDaemonConnectorException e) { |
Irfan Sheriff | 817388e | 2012-04-11 14:52:19 -0700 | [diff] [blame] | 773 | Slog.e(TAG, "Failed to stopServiceDiscovery " + e); |
| 774 | return false; |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 775 | } |
Irfan Sheriff | 817388e | 2012-04-11 14:52:19 -0700 | [diff] [blame] | 776 | return true; |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 777 | } |
| 778 | |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 779 | private boolean resolveService(int resolveId, NsdServiceInfo service) { |
Irfan Sheriff | 817388e | 2012-04-11 14:52:19 -0700 | [diff] [blame] | 780 | if (DBG) Slog.d(TAG, "resolveService: " + resolveId + " " + service); |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 781 | try { |
Irfan Sheriff | 817388e | 2012-04-11 14:52:19 -0700 | [diff] [blame] | 782 | mNativeConnector.execute("mdnssd", "resolve", resolveId, service.getServiceName(), |
| 783 | service.getServiceType(), "local."); |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 784 | } catch(NativeDaemonConnectorException e) { |
Irfan Sheriff | 817388e | 2012-04-11 14:52:19 -0700 | [diff] [blame] | 785 | Slog.e(TAG, "Failed to resolveService " + e); |
| 786 | return false; |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 787 | } |
Irfan Sheriff | 817388e | 2012-04-11 14:52:19 -0700 | [diff] [blame] | 788 | return true; |
| 789 | } |
| 790 | |
| 791 | private boolean stopResolveService(int resolveId) { |
| 792 | if (DBG) Slog.d(TAG, "stopResolveService: " + resolveId); |
| 793 | try { |
| 794 | mNativeConnector.execute("mdnssd", "stop-resolve", resolveId); |
| 795 | } catch(NativeDaemonConnectorException e) { |
| 796 | Slog.e(TAG, "Failed to stop resolve " + e); |
| 797 | return false; |
| 798 | } |
| 799 | return true; |
| 800 | } |
| 801 | |
| 802 | private boolean getAddrInfo(int resolveId, String hostname) { |
| 803 | if (DBG) Slog.d(TAG, "getAdddrInfo: " + resolveId); |
| 804 | try { |
| 805 | mNativeConnector.execute("mdnssd", "getaddrinfo", resolveId, hostname); |
| 806 | } catch(NativeDaemonConnectorException e) { |
| 807 | Slog.e(TAG, "Failed to getAddrInfo " + e); |
| 808 | return false; |
| 809 | } |
| 810 | return true; |
| 811 | } |
| 812 | |
| 813 | private boolean stopGetAddrInfo(int resolveId) { |
| 814 | if (DBG) Slog.d(TAG, "stopGetAdddrInfo: " + resolveId); |
| 815 | try { |
| 816 | mNativeConnector.execute("mdnssd", "stop-getaddrinfo", resolveId); |
| 817 | } catch(NativeDaemonConnectorException e) { |
| 818 | Slog.e(TAG, "Failed to stopGetAddrInfo " + e); |
| 819 | return false; |
| 820 | } |
| 821 | return true; |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 822 | } |
| 823 | |
| 824 | @Override |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 825 | public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 826 | if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) |
| 827 | != PackageManager.PERMISSION_GRANTED) { |
| 828 | pw.println("Permission Denial: can't dump ServiceDiscoverService from from pid=" |
| 829 | + Binder.getCallingPid() |
| 830 | + ", uid=" + Binder.getCallingUid()); |
| 831 | return; |
| 832 | } |
| 833 | |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 834 | for (ClientInfo client : mClients.values()) { |
| 835 | pw.println("Client Info"); |
| 836 | pw.println(client); |
| 837 | } |
| 838 | |
| 839 | mNsdStateMachine.dump(fd, pw, args); |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 840 | } |
Irfan Sheriff | 817388e | 2012-04-11 14:52:19 -0700 | [diff] [blame] | 841 | |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 842 | /* arg2 on the source message has an id that needs to be retained in replies |
| 843 | * see NsdManager for details */ |
| 844 | private Message obtainMessage(Message srcMsg) { |
| 845 | Message msg = Message.obtain(); |
| 846 | msg.arg2 = srcMsg.arg2; |
| 847 | return msg; |
Irfan Sheriff | 817388e | 2012-04-11 14:52:19 -0700 | [diff] [blame] | 848 | } |
| 849 | |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 850 | private void replyToMessage(Message msg, int what) { |
| 851 | if (msg.replyTo == null) return; |
| 852 | Message dstMsg = obtainMessage(msg); |
| 853 | dstMsg.what = what; |
| 854 | mReplyChannel.replyToMessage(msg, dstMsg); |
Irfan Sheriff | 817388e | 2012-04-11 14:52:19 -0700 | [diff] [blame] | 855 | } |
| 856 | |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 857 | private void replyToMessage(Message msg, int what, int arg1) { |
| 858 | if (msg.replyTo == null) return; |
| 859 | Message dstMsg = obtainMessage(msg); |
| 860 | dstMsg.what = what; |
| 861 | dstMsg.arg1 = arg1; |
| 862 | mReplyChannel.replyToMessage(msg, dstMsg); |
| 863 | } |
| 864 | |
| 865 | private void replyToMessage(Message msg, int what, Object obj) { |
| 866 | if (msg.replyTo == null) return; |
| 867 | Message dstMsg = obtainMessage(msg); |
| 868 | dstMsg.what = what; |
| 869 | dstMsg.obj = obj; |
| 870 | mReplyChannel.replyToMessage(msg, dstMsg); |
Irfan Sheriff | 817388e | 2012-04-11 14:52:19 -0700 | [diff] [blame] | 871 | } |
| 872 | |
| 873 | /* Information tracked per client */ |
| 874 | private class ClientInfo { |
| 875 | |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 876 | private static final int MAX_LIMIT = 10; |
Vairavan Srinivasan | 6727e73 | 2012-08-05 13:14:12 -0700 | [diff] [blame] | 877 | private final AsyncChannel mChannel; |
| 878 | private final Messenger mMessenger; |
Irfan Sheriff | 817388e | 2012-04-11 14:52:19 -0700 | [diff] [blame] | 879 | /* Remembers a resolved service until getaddrinfo completes */ |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 880 | private NsdServiceInfo mResolvedService; |
| 881 | |
| 882 | /* A map from client id to unique id sent to mDns */ |
| 883 | private SparseArray<Integer> mClientIds = new SparseArray<Integer>(); |
Irfan Sheriff | 817388e | 2012-04-11 14:52:19 -0700 | [diff] [blame] | 884 | |
Dave Platt | f31760c | 2014-03-07 14:48:22 -0800 | [diff] [blame] | 885 | /* A map from client id to the type of the request we had received */ |
| 886 | private SparseArray<Integer> mClientRequests = new SparseArray<Integer>(); |
| 887 | |
Irfan Sheriff | 817388e | 2012-04-11 14:52:19 -0700 | [diff] [blame] | 888 | private ClientInfo(AsyncChannel c, Messenger m) { |
| 889 | mChannel = c; |
| 890 | mMessenger = m; |
Irfan Sheriff | 817388e | 2012-04-11 14:52:19 -0700 | [diff] [blame] | 891 | if (DBG) Slog.d(TAG, "New client, channel: " + c + " messenger: " + m); |
| 892 | } |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 893 | |
| 894 | @Override |
| 895 | public String toString() { |
| 896 | StringBuffer sb = new StringBuffer(); |
| 897 | sb.append("mChannel ").append(mChannel).append("\n"); |
| 898 | sb.append("mMessenger ").append(mMessenger).append("\n"); |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 899 | sb.append("mResolvedService ").append(mResolvedService).append("\n"); |
Irfan Sheriff | 22af38c | 2012-05-03 16:44:27 -0700 | [diff] [blame] | 900 | for(int i = 0; i< mClientIds.size(); i++) { |
Dave Platt | f31760c | 2014-03-07 14:48:22 -0800 | [diff] [blame] | 901 | int clientID = mClientIds.keyAt(i); |
| 902 | sb.append("clientId ").append(clientID). |
| 903 | append(" mDnsId ").append(mClientIds.valueAt(i)). |
| 904 | append(" type ").append(mClientRequests.get(clientID)).append("\n"); |
Irfan Sheriff | 3ef889b | 2012-04-17 23:15:29 -0700 | [diff] [blame] | 905 | } |
| 906 | return sb.toString(); |
| 907 | } |
Dave Platt | f31760c | 2014-03-07 14:48:22 -0800 | [diff] [blame] | 908 | |
| 909 | // Remove any pending requests from the global map when we get rid of a client, |
| 910 | // and send cancellations to the daemon. |
| 911 | private void expungeAllRequests() { |
| 912 | int globalId, clientId, i; |
| 913 | for (i = 0; i < mClientIds.size(); i++) { |
| 914 | clientId = mClientIds.keyAt(i); |
| 915 | globalId = mClientIds.valueAt(i); |
| 916 | mIdToClientInfoMap.remove(globalId); |
| 917 | if (DBG) Slog.d(TAG, "Terminating client-ID " + clientId + |
| 918 | " global-ID " + globalId + " type " + mClientRequests.get(clientId)); |
| 919 | switch (mClientRequests.get(clientId)) { |
| 920 | case NsdManager.DISCOVER_SERVICES: |
| 921 | stopServiceDiscovery(globalId); |
| 922 | break; |
| 923 | case NsdManager.RESOLVE_SERVICE: |
| 924 | stopResolveService(globalId); |
| 925 | break; |
| 926 | case NsdManager.REGISTER_SERVICE: |
| 927 | unregisterService(globalId); |
| 928 | break; |
| 929 | default: |
| 930 | break; |
| 931 | } |
| 932 | } |
| 933 | mClientIds.clear(); |
| 934 | mClientRequests.clear(); |
| 935 | } |
| 936 | |
Christopher Lane | 5a57790 | 2014-04-25 18:39:07 -0700 | [diff] [blame] | 937 | // mClientIds is a sparse array of listener id -> mDnsClient id. For a given mDnsClient id, |
| 938 | // return the corresponding listener id. mDnsClient id is also called a global id. |
| 939 | private int getClientId(final int globalId) { |
| 940 | // This doesn't use mClientIds.indexOfValue because indexOfValue uses == (not .equals) |
| 941 | // while also coercing the int primitives to Integer objects. |
| 942 | for (int i = 0, nSize = mClientIds.size(); i < nSize; i++) { |
| 943 | int mDnsId = mClientIds.valueAt(i); |
| 944 | if (globalId == mDnsId) { |
| 945 | return mClientIds.keyAt(i); |
| 946 | } |
| 947 | } |
| 948 | return -1; |
| 949 | } |
Irfan Sheriff | 817388e | 2012-04-11 14:52:19 -0700 | [diff] [blame] | 950 | } |
Irfan Sheriff | 7d024d3 | 2012-03-22 17:01:39 -0700 | [diff] [blame] | 951 | } |