Jaewan Kim | 6346155 | 2014-03-10 17:10:51 +0900 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2014 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.net; |
| 18 | |
| 19 | import android.net.IpConfiguration; |
| 20 | import android.net.IpConfiguration.IpAssignment; |
| 21 | import android.net.IpConfiguration.ProxySettings; |
| 22 | import android.net.LinkAddress; |
| 23 | import android.net.LinkProperties; |
| 24 | import android.net.NetworkUtils; |
| 25 | import android.net.ProxyInfo; |
| 26 | import android.net.RouteInfo; |
| 27 | import android.os.Handler; |
| 28 | import android.os.HandlerThread; |
| 29 | import android.text.TextUtils; |
| 30 | import android.util.Log; |
| 31 | import android.util.SparseArray; |
| 32 | |
| 33 | import com.android.server.net.DelayedDiskWrite; |
| 34 | |
| 35 | import java.io.BufferedInputStream; |
| 36 | import java.io.BufferedOutputStream; |
| 37 | import java.io.DataInputStream; |
| 38 | import java.io.DataOutputStream; |
| 39 | import java.io.EOFException; |
| 40 | import java.io.FileInputStream; |
| 41 | import java.io.FileOutputStream; |
| 42 | import java.io.IOException; |
| 43 | import java.net.InetAddress; |
| 44 | import java.util.Map; |
| 45 | |
| 46 | public class IpConfigStore { |
| 47 | private static final String TAG = "IpConfigStore"; |
| 48 | private static final boolean DBG = true; |
| 49 | |
| 50 | protected final DelayedDiskWrite mWriter; |
| 51 | |
| 52 | /* IP and proxy configuration keys */ |
| 53 | protected static final String ID_KEY = "id"; |
| 54 | protected static final String IP_ASSIGNMENT_KEY = "ipAssignment"; |
| 55 | protected static final String LINK_ADDRESS_KEY = "linkAddress"; |
| 56 | protected static final String GATEWAY_KEY = "gateway"; |
| 57 | protected static final String DNS_KEY = "dns"; |
| 58 | protected static final String PROXY_SETTINGS_KEY = "proxySettings"; |
| 59 | protected static final String PROXY_HOST_KEY = "proxyHost"; |
| 60 | protected static final String PROXY_PORT_KEY = "proxyPort"; |
| 61 | protected static final String PROXY_PAC_FILE = "proxyPac"; |
| 62 | protected static final String EXCLUSION_LIST_KEY = "exclusionList"; |
| 63 | protected static final String EOS = "eos"; |
| 64 | |
| 65 | protected static final int IPCONFIG_FILE_VERSION = 2; |
| 66 | |
| 67 | public IpConfigStore() { |
| 68 | mWriter = new DelayedDiskWrite(); |
| 69 | } |
| 70 | |
| 71 | private boolean writeConfig(DataOutputStream out, int configKey, |
| 72 | IpConfiguration config) throws IOException { |
| 73 | boolean written = false; |
| 74 | |
| 75 | try { |
| 76 | LinkProperties linkProperties = config.linkProperties; |
| 77 | switch (config.ipAssignment) { |
| 78 | case STATIC: |
| 79 | out.writeUTF(IP_ASSIGNMENT_KEY); |
| 80 | out.writeUTF(config.ipAssignment.toString()); |
| 81 | for (LinkAddress linkAddr : linkProperties.getLinkAddresses()) { |
| 82 | out.writeUTF(LINK_ADDRESS_KEY); |
| 83 | out.writeUTF(linkAddr.getAddress().getHostAddress()); |
| 84 | out.writeInt(linkAddr.getNetworkPrefixLength()); |
| 85 | } |
| 86 | for (RouteInfo route : linkProperties.getRoutes()) { |
| 87 | out.writeUTF(GATEWAY_KEY); |
| 88 | LinkAddress dest = route.getDestination(); |
| 89 | if (dest != null) { |
| 90 | out.writeInt(1); |
| 91 | out.writeUTF(dest.getAddress().getHostAddress()); |
| 92 | out.writeInt(dest.getNetworkPrefixLength()); |
| 93 | } else { |
| 94 | out.writeInt(0); |
| 95 | } |
| 96 | if (route.getGateway() != null) { |
| 97 | out.writeInt(1); |
| 98 | out.writeUTF(route.getGateway().getHostAddress()); |
| 99 | } else { |
| 100 | out.writeInt(0); |
| 101 | } |
| 102 | } |
Robert Greenwalt | 25702b3 | 2014-06-06 10:30:11 -0700 | [diff] [blame^] | 103 | for (InetAddress inetAddr : linkProperties.getDnsServers()) { |
Jaewan Kim | 6346155 | 2014-03-10 17:10:51 +0900 | [diff] [blame] | 104 | out.writeUTF(DNS_KEY); |
| 105 | out.writeUTF(inetAddr.getHostAddress()); |
| 106 | } |
| 107 | written = true; |
| 108 | break; |
| 109 | case DHCP: |
| 110 | out.writeUTF(IP_ASSIGNMENT_KEY); |
| 111 | out.writeUTF(config.ipAssignment.toString()); |
| 112 | written = true; |
| 113 | break; |
| 114 | case UNASSIGNED: |
| 115 | /* Ignore */ |
| 116 | break; |
| 117 | default: |
| 118 | loge("Ignore invalid ip assignment while writing"); |
| 119 | break; |
| 120 | } |
| 121 | |
| 122 | switch (config.proxySettings) { |
| 123 | case STATIC: |
| 124 | ProxyInfo proxyProperties = linkProperties.getHttpProxy(); |
| 125 | String exclusionList = proxyProperties.getExclusionListAsString(); |
| 126 | out.writeUTF(PROXY_SETTINGS_KEY); |
| 127 | out.writeUTF(config.proxySettings.toString()); |
| 128 | out.writeUTF(PROXY_HOST_KEY); |
| 129 | out.writeUTF(proxyProperties.getHost()); |
| 130 | out.writeUTF(PROXY_PORT_KEY); |
| 131 | out.writeInt(proxyProperties.getPort()); |
| 132 | out.writeUTF(EXCLUSION_LIST_KEY); |
| 133 | out.writeUTF(exclusionList); |
| 134 | written = true; |
| 135 | break; |
| 136 | case PAC: |
| 137 | ProxyInfo proxyPacProperties = linkProperties.getHttpProxy(); |
| 138 | out.writeUTF(PROXY_SETTINGS_KEY); |
| 139 | out.writeUTF(config.proxySettings.toString()); |
| 140 | out.writeUTF(PROXY_PAC_FILE); |
| 141 | out.writeUTF(proxyPacProperties.getPacFileUrl().toString()); |
| 142 | written = true; |
| 143 | break; |
| 144 | case NONE: |
| 145 | out.writeUTF(PROXY_SETTINGS_KEY); |
| 146 | out.writeUTF(config.proxySettings.toString()); |
| 147 | written = true; |
| 148 | break; |
| 149 | case UNASSIGNED: |
| 150 | /* Ignore */ |
| 151 | break; |
| 152 | default: |
| 153 | loge("Ignore invalid proxy settings while writing"); |
| 154 | break; |
| 155 | } |
| 156 | |
| 157 | if (written) { |
| 158 | out.writeUTF(ID_KEY); |
| 159 | out.writeInt(configKey); |
| 160 | } |
| 161 | } catch (NullPointerException e) { |
| 162 | loge("Failure in writing " + config.linkProperties + e); |
| 163 | } |
| 164 | out.writeUTF(EOS); |
| 165 | |
| 166 | return written; |
| 167 | } |
| 168 | |
| 169 | public void writeIpAndProxyConfigurations(String filePath, |
| 170 | final SparseArray<IpConfiguration> networks) { |
| 171 | mWriter.write(filePath, new DelayedDiskWrite.Writer() { |
| 172 | public void onWriteCalled(DataOutputStream out) throws IOException{ |
| 173 | out.writeInt(IPCONFIG_FILE_VERSION); |
| 174 | for(int i = 0; i < networks.size(); i++) { |
| 175 | writeConfig(out, networks.keyAt(i), networks.valueAt(i)); |
| 176 | } |
| 177 | } |
| 178 | }); |
| 179 | } |
| 180 | |
| 181 | public SparseArray<IpConfiguration> readIpAndProxyConfigurations(String filePath) { |
| 182 | SparseArray<IpConfiguration> networks = new SparseArray<IpConfiguration>(); |
| 183 | |
| 184 | DataInputStream in = null; |
| 185 | try { |
| 186 | in = new DataInputStream(new BufferedInputStream(new FileInputStream(filePath))); |
| 187 | |
| 188 | int version = in.readInt(); |
| 189 | if (version != 2 && version != 1) { |
| 190 | loge("Bad version on IP configuration file, ignore read"); |
| 191 | return null; |
| 192 | } |
| 193 | |
| 194 | while (true) { |
| 195 | int id = -1; |
| 196 | // Default is DHCP with no proxy |
| 197 | IpAssignment ipAssignment = IpAssignment.DHCP; |
| 198 | ProxySettings proxySettings = ProxySettings.NONE; |
| 199 | LinkProperties linkProperties = new LinkProperties(); |
| 200 | String proxyHost = null; |
| 201 | String pacFileUrl = null; |
| 202 | int proxyPort = -1; |
| 203 | String exclusionList = null; |
| 204 | String key; |
| 205 | |
| 206 | do { |
| 207 | key = in.readUTF(); |
| 208 | try { |
| 209 | if (key.equals(ID_KEY)) { |
| 210 | id = in.readInt(); |
| 211 | } else if (key.equals(IP_ASSIGNMENT_KEY)) { |
| 212 | ipAssignment = IpAssignment.valueOf(in.readUTF()); |
| 213 | } else if (key.equals(LINK_ADDRESS_KEY)) { |
| 214 | LinkAddress linkAddr = new LinkAddress( |
| 215 | NetworkUtils.numericToInetAddress(in.readUTF()), in.readInt()); |
| 216 | linkProperties.addLinkAddress(linkAddr); |
| 217 | } else if (key.equals(GATEWAY_KEY)) { |
| 218 | LinkAddress dest = null; |
| 219 | InetAddress gateway = null; |
| 220 | if (version == 1) { |
| 221 | // only supported default gateways - leave the dest/prefix empty |
| 222 | gateway = NetworkUtils.numericToInetAddress(in.readUTF()); |
| 223 | } else { |
| 224 | if (in.readInt() == 1) { |
| 225 | dest = new LinkAddress( |
| 226 | NetworkUtils.numericToInetAddress(in.readUTF()), |
| 227 | in.readInt()); |
| 228 | } |
| 229 | if (in.readInt() == 1) { |
| 230 | gateway = NetworkUtils.numericToInetAddress(in.readUTF()); |
| 231 | } |
| 232 | } |
| 233 | linkProperties.addRoute(new RouteInfo(dest, gateway)); |
| 234 | } else if (key.equals(DNS_KEY)) { |
Robert Greenwalt | 25702b3 | 2014-06-06 10:30:11 -0700 | [diff] [blame^] | 235 | linkProperties.addDnsServer( |
Jaewan Kim | 6346155 | 2014-03-10 17:10:51 +0900 | [diff] [blame] | 236 | NetworkUtils.numericToInetAddress(in.readUTF())); |
| 237 | } else if (key.equals(PROXY_SETTINGS_KEY)) { |
| 238 | proxySettings = ProxySettings.valueOf(in.readUTF()); |
| 239 | } else if (key.equals(PROXY_HOST_KEY)) { |
| 240 | proxyHost = in.readUTF(); |
| 241 | } else if (key.equals(PROXY_PORT_KEY)) { |
| 242 | proxyPort = in.readInt(); |
| 243 | } else if (key.equals(PROXY_PAC_FILE)) { |
| 244 | pacFileUrl = in.readUTF(); |
| 245 | } else if (key.equals(EXCLUSION_LIST_KEY)) { |
| 246 | exclusionList = in.readUTF(); |
| 247 | } else if (key.equals(EOS)) { |
| 248 | break; |
| 249 | } else { |
| 250 | loge("Ignore unknown key " + key + "while reading"); |
| 251 | } |
| 252 | } catch (IllegalArgumentException e) { |
| 253 | loge("Ignore invalid address while reading" + e); |
| 254 | } |
| 255 | } while (true); |
| 256 | |
| 257 | if (id != -1) { |
| 258 | IpConfiguration config = new IpConfiguration(); |
| 259 | networks.put(id, config); |
| 260 | |
| 261 | config.linkProperties = linkProperties; |
| 262 | switch (ipAssignment) { |
| 263 | case STATIC: |
| 264 | case DHCP: |
| 265 | config.ipAssignment = ipAssignment; |
| 266 | break; |
| 267 | case UNASSIGNED: |
| 268 | loge("BUG: Found UNASSIGNED IP on file, use DHCP"); |
| 269 | config.ipAssignment = IpAssignment.DHCP; |
| 270 | break; |
| 271 | default: |
| 272 | loge("Ignore invalid ip assignment while reading."); |
| 273 | config.ipAssignment = IpAssignment.UNASSIGNED; |
| 274 | break; |
| 275 | } |
| 276 | |
| 277 | switch (proxySettings) { |
| 278 | case STATIC: |
| 279 | config.proxySettings = proxySettings; |
| 280 | ProxyInfo ProxyInfo = |
| 281 | new ProxyInfo(proxyHost, proxyPort, exclusionList); |
| 282 | linkProperties.setHttpProxy(ProxyInfo); |
| 283 | break; |
| 284 | case PAC: |
| 285 | config.proxySettings = proxySettings; |
| 286 | ProxyInfo proxyPacProperties = |
| 287 | new ProxyInfo(pacFileUrl); |
| 288 | linkProperties.setHttpProxy(proxyPacProperties); |
| 289 | break; |
| 290 | case NONE: |
| 291 | config.proxySettings = proxySettings; |
| 292 | break; |
| 293 | case UNASSIGNED: |
| 294 | loge("BUG: Found UNASSIGNED proxy on file, use NONE"); |
| 295 | config.proxySettings = ProxySettings.NONE; |
| 296 | break; |
| 297 | default: |
| 298 | loge("Ignore invalid proxy settings while reading"); |
| 299 | config.proxySettings = ProxySettings.UNASSIGNED; |
| 300 | break; |
| 301 | } |
| 302 | } else { |
| 303 | if (DBG) log("Missing id while parsing configuration"); |
| 304 | } |
| 305 | } |
| 306 | } catch (EOFException ignore) { |
| 307 | } catch (IOException e) { |
Lorenzo Colitti | 56cf7c5 | 2014-05-21 16:30:22 -0700 | [diff] [blame] | 308 | loge("Error parsing configuration: " + e); |
Jaewan Kim | 6346155 | 2014-03-10 17:10:51 +0900 | [diff] [blame] | 309 | } finally { |
| 310 | if (in != null) { |
| 311 | try { |
| 312 | in.close(); |
| 313 | } catch (Exception e) {} |
| 314 | } |
| 315 | } |
| 316 | |
| 317 | return networks; |
| 318 | } |
| 319 | |
| 320 | protected void loge(String s) { |
| 321 | Log.e(TAG, s); |
| 322 | } |
| 323 | |
| 324 | protected void log(String s) { |
| 325 | Log.d(TAG, s); |
| 326 | } |
| 327 | } |