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| 1 | /* | ||
| 2 | * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved. | ||
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| 4 | * | ||
| 5 | * This code is free software; you can redistribute it and/or modify it | ||
| 6 | * under the terms of the GNU General Public License version 2 only, as | ||
| 7 | * published by the Free Software Foundation. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | |||
| 26 | package sun.net.spi; | ||
| 27 | |||
| 28 | import java.net.InetSocketAddress; | ||
| 29 | import java.net.Proxy; | ||
| 30 | import java.net.ProxySelector; | ||
| 31 | import java.net.SocketAddress; | ||
| 32 | import java.net.URI; | ||
| 33 | import java.util.ArrayList; | ||
| 34 | import java.util.List; | ||
| 35 | import java.util.StringTokenizer; | ||
| 36 | import java.io.IOException; | ||
| 37 | import sun.misc.RegexpPool; | ||
| 38 | import java.security.AccessController; | ||
| 39 | import java.security.PrivilegedAction; | ||
| 40 | import sun.net.NetProperties; | ||
| 41 | import sun.net.SocksProxy; | ||
| 42 | |||
| 43 | /** | ||
| 44 | * Supports proxy settings using system properties This proxy selector | ||
| 45 | * provides backward compatibility with the old http protocol handler | ||
| 46 | * as far as how proxy is set | ||
| 47 | * | ||
| 48 | * Most of the implementation copied from the old http protocol handler | ||
| 49 | * | ||
| 50 | * Supports http/https/ftp.proxyHost, http/https/ftp.proxyPort, | ||
| 51 | * proxyHost, proxyPort, and http/https/ftp.nonProxyHost, and socks. | ||
| 52 | * NOTE: need to do gopher as well | ||
| 53 | */ | ||
| 54 | public class DefaultProxySelector extends ProxySelector { | ||
| 55 | |||
| 56 | /** | ||
| 57 | * This is where we define all the valid System Properties we have to | ||
| 58 | * support for each given protocol. | ||
| 59 | * The format of this 2 dimensional array is : | ||
| 60 | * - 1 row per protocol (http, ftp, ...) | ||
| 61 | * - 1st element of each row is the protocol name | ||
| 62 | * - subsequent elements are prefixes for Host & Port properties | ||
| 63 | * listed in order of priority. | ||
| 64 | * Example: | ||
| 65 | * {"ftp", "ftp.proxy", "ftpProxy", "proxy", "socksProxy"}, | ||
| 66 | * means for FTP we try in that oder: | ||
| 67 | * + ftp.proxyHost & ftp.proxyPort | ||
| 68 | * + ftpProxyHost & ftpProxyPort | ||
| 69 | * + proxyHost & proxyPort | ||
| 70 | * + socksProxyHost & socksProxyPort | ||
| 71 | * | ||
| 72 | * Note that the socksProxy should *always* be the last on the list | ||
| 73 | */ | ||
| 74 | final static String[][] props = { | ||
| 75 | /* | ||
| 76 | * protocol, Property prefix 1, Property prefix 2, ... | ||
| 77 | */ | ||
| 78 | {"http", "http.proxy", "proxy", "socksProxy"}, | ||
| 79 | {"https", "https.proxy", "proxy", "socksProxy"}, | ||
| 80 | {"ftp", "ftp.proxy", "ftpProxy", "proxy", "socksProxy"}, | ||
| 81 | {"gopher", "gopherProxy", "socksProxy"}, | ||
| 82 | {"socket", "socksProxy"} | ||
| 83 | }; | ||
| 84 | |||
| 85 | private static final String SOCKS_PROXY_VERSION = "socksProxyVersion"; | ||
| 86 | |||
| 87 | private static boolean hasSystemProxies = false; | ||
| 88 | |||
| 89 | static { | ||
| 90 | final String key = "java.net.useSystemProxies"; | ||
| 91 | Boolean b = AccessController.doPrivileged( | ||
| 92 | new PrivilegedAction<Boolean>() { | ||
| 93 | public Boolean run() { | ||
| 94 | return NetProperties.getBoolean(key); | ||
| 95 | }}); | ||
| 96 | if (b != null && b.booleanValue()) { | ||
| 97 | java.security.AccessController.doPrivileged( | ||
| 98 | new sun.security.action.LoadLibraryAction("net")); | ||
| 99 | hasSystemProxies = init(); | ||
| 100 | } | ||
| 101 | } | ||
| 102 | |||
| 103 | /** | ||
| 104 | * How to deal with "non proxy hosts": | ||
| 105 | * since we do have to generate a RegexpPool we don't want to do that if | ||
| 106 | * it's not necessary. Therefore we do cache the result, on a per-protocol | ||
| 107 | * basis, and change it only when the "source", i.e. the system property, | ||
| 108 | * did change. | ||
| 109 | */ | ||
| 110 | |||
| 111 | static class NonProxyInfo { | ||
| 112 | // Default value for nonProxyHosts, this provides backward compatibility | ||
| 113 | // by excluding localhost and its litteral notations. | ||
| 114 | static final String defStringVal = "localhost|127.*|[::1]"; | ||
| 115 | |||
| 116 | String hostsSource; | ||
| 117 | RegexpPool hostsPool; | ||
| 118 | final String property; | ||
| 119 | final String defaultVal; | ||
| 120 | static NonProxyInfo ftpNonProxyInfo = new NonProxyInfo("ftp.nonProxyHosts", null, null, defStringVal); | ||
| 121 | static NonProxyInfo httpNonProxyInfo = new NonProxyInfo("http.nonProxyHosts", null, null, defStringVal); | ||
| 122 | |||
| 123 | NonProxyInfo(String p, String s, RegexpPool pool, String d) { | ||
| 124 | property = p; | ||
| 125 | hostsSource = s; | ||
| 126 | hostsPool = pool; | ||
| 127 | defaultVal = d; | ||
| 128 | } | ||
| 129 | } | ||
| 130 | |||
| 131 | |||
| 132 | /** | ||
| 133 | * select() method. Where all the hard work is done. | ||
| 134 | * Build a list of proxies depending on URI. | ||
| 135 | * Since we're only providing compatibility with the system properties | ||
| 136 | * from previous releases (see list above), that list will always | ||
| 137 | * contain 1 single proxy, default being NO_PROXY. | ||
| 138 | */ | ||
| 139 | public java.util.List<Proxy> select(URI uri) { | ||
| 140 | if (uri == null) { | ||
| 141 | throw new IllegalArgumentException("URI can't be null."); | ||
| 142 | } | ||
| 143 | String protocol = uri.getScheme(); | ||
| 144 | String host = uri.getHost(); | ||
| 145 | |||
| 146 | if (host == null) { | ||
| 147 | // This is a hack to ensure backward compatibility in two | ||
| 148 | // cases: 1. hostnames contain non-ascii characters, | ||
| 149 | // internationalized domain names. in which case, URI will | ||
| 150 | // return null, see BugID 4957669; 2. Some hostnames can | ||
| 151 | // contain '_' chars even though it's not supposed to be | ||
| 152 | // legal, in which case URI will return null for getHost, | ||
| 153 | // but not for getAuthority() See BugID 4913253 | ||
| 154 | String auth = uri.getAuthority(); | ||
| 155 | if (auth != null) { | ||
| 156 | int i; | ||
| 157 | i = auth.indexOf('@'); | ||
| 158 | if (i >= 0) { | ||
| 159 | auth = auth.substring(i+1); | ||
| 160 | } | ||
| 161 | i = auth.lastIndexOf(':'); | ||
| 162 | if (i >= 0) { | ||
| 163 | auth = auth.substring(0,i); | ||
| 164 | } | ||
| 165 | host = auth; | ||
| 166 | } | ||
| 167 | } | ||
| 168 | |||
| 169 | if (protocol == null || host == null) { | ||
| 170 | throw new IllegalArgumentException("protocol = "+protocol+" host = "+host); | ||
| 171 | } | ||
| 172 | List<Proxy> proxyl = new ArrayList<Proxy>(1); | ||
| 173 | |||
| 174 | NonProxyInfo pinfo = null; | ||
| 175 | |||
| 176 | if ("http".equalsIgnoreCase(protocol)) { | ||
| 177 | pinfo = NonProxyInfo.httpNonProxyInfo; | ||
| 178 | } else if ("https".equalsIgnoreCase(protocol)) { | ||
| 179 | // HTTPS uses the same property as HTTP, for backward | ||
| 180 | // compatibility | ||
| 181 | pinfo = NonProxyInfo.httpNonProxyInfo; | ||
| 182 | } else if ("ftp".equalsIgnoreCase(protocol)) { | ||
| 183 | pinfo = NonProxyInfo.ftpNonProxyInfo; | ||
| 184 | } | ||
| 185 | |||
| 186 | /** | ||
| 187 | * Let's check the System properties for that protocol | ||
| 188 | */ | ||
| 189 | final String proto = protocol; | ||
| 190 | final NonProxyInfo nprop = pinfo; | ||
| 191 | final String urlhost = host.toLowerCase(); | ||
| 192 | |||
| 193 | /** | ||
| 194 | * This is one big doPrivileged call, but we're trying to optimize | ||
| 195 | * the code as much as possible. Since we're checking quite a few | ||
| 196 | * System properties it does help having only 1 call to doPrivileged. | ||
| 197 | * Be mindful what you do in here though! | ||
| 198 | */ | ||
| 199 | Proxy p = AccessController.doPrivileged( | ||
| 200 | new PrivilegedAction<Proxy>() { | ||
| 201 | public Proxy run() { | ||
| 202 | int i, j; | ||
| 203 | String phost = null; | ||
| 204 | int pport = 0; | ||
| 205 | String nphosts = null; | ||
| 206 | InetSocketAddress saddr = null; | ||
| 207 | |||
| 208 | // Then let's walk the list of protocols in our array | ||
| 209 | for (i=0; i<props.length; i++) { | ||
| 210 | if (props[i][0].equalsIgnoreCase(proto)) { | ||
| 211 | for (j = 1; j < props[i].length; j++) { | ||
| 212 | /* System.getProp() will give us an empty | ||
| 213 | * String, "" for a defined but "empty" | ||
| 214 | * property. | ||
| 215 | */ | ||
| 216 | phost = NetProperties.get(props[i][j]+"Host"); | ||
| 217 | if (phost != null && phost.length() != 0) | ||
| 218 | break; | ||
| 219 | } | ||
| 220 | if (phost == null || phost.length() == 0) { | ||
| 221 | /** | ||
| 222 | * No system property defined for that | ||
| 223 | * protocol. Let's check System Proxy | ||
| 224 | * settings (Gnome & Windows) if we were | ||
| 225 | * instructed to. | ||
| 226 | */ | ||
| 227 | if (hasSystemProxies) { | ||
| 228 | String sproto; | ||
| 229 | if (proto.equalsIgnoreCase("socket")) | ||
| 230 | sproto = "socks"; | ||
| 231 | else | ||
| 232 | sproto = proto; | ||
| 233 | Proxy sproxy = getSystemProxy(sproto, urlhost); | ||
| 234 | if (sproxy != null) { | ||
| 235 | return sproxy; | ||
| 236 | } | ||
| 237 | } | ||
| 238 | return Proxy.NO_PROXY; | ||
| 239 | } | ||
| 240 | // If a Proxy Host is defined for that protocol | ||
| 241 | // Let's get the NonProxyHosts property | ||
| 242 | if (nprop != null) { | ||
| 243 | nphosts = NetProperties.get(nprop.property); | ||
| 244 | synchronized (nprop) { | ||
| 245 | if (nphosts == null) { | ||
| 246 | if (nprop.defaultVal != null) { | ||
| 247 | nphosts = nprop.defaultVal; | ||
| 248 | } else { | ||
| 249 | nprop.hostsSource = null; | ||
| 250 | nprop.hostsPool = null; | ||
| 251 | } | ||
| 252 | } | ||
| 253 | if (nphosts != null) { | ||
| 254 | if (!nphosts.equals(nprop.hostsSource)) { | ||
| 255 | RegexpPool pool = new RegexpPool(); | ||
| 256 | StringTokenizer st = new StringTokenizer(nphosts, "|", false); | ||
| 257 | try { | ||
| 258 | while (st.hasMoreTokens()) { | ||
| 259 | pool.add(st.nextToken().toLowerCase(), Boolean.TRUE); | ||
| 260 | } | ||
| 261 | } catch (sun.misc.REException ex) { | ||
| 262 | } | ||
| 263 | nprop.hostsPool = pool; | ||
| 264 | nprop.hostsSource = nphosts; | ||
| 265 | } | ||
| 266 | } | ||
| 267 | if (nprop.hostsPool != null && | ||
| 268 | nprop.hostsPool.match(urlhost) != null) { | ||
| 269 | return Proxy.NO_PROXY; | ||
| 270 | } | ||
| 271 | } | ||
| 272 | } | ||
| 273 | // We got a host, let's check for port | ||
| 274 | |||
| 275 | pport = NetProperties.getInteger(props[i][j]+"Port", 0).intValue(); | ||
| 276 | if (pport == 0 && j < (props[i].length - 1)) { | ||
| 277 | // Can't find a port with same prefix as Host | ||
| 278 | // AND it's not a SOCKS proxy | ||
| 279 | // Let's try the other prefixes for that proto | ||
| 280 | for (int k = 1; k < (props[i].length - 1); k++) { | ||
| 281 | if ((k != j) && (pport == 0)) | ||
| 282 | pport = NetProperties.getInteger(props[i][k]+"Port", 0).intValue(); | ||
| 283 | } | ||
| 284 | } | ||
| 285 | |||
| 286 | // Still couldn't find a port, let's use default | ||
| 287 | if (pport == 0) { | ||
| 288 | if (j == (props[i].length - 1)) // SOCKS | ||
| 289 | pport = defaultPort("socket"); | ||
| 290 | else | ||
| 291 | pport = defaultPort(proto); | ||
| 292 | } | ||
| 293 | // We did find a proxy definition. | ||
| 294 | // Let's create the address, but don't resolve it | ||
| 295 | // as this will be done at connection time | ||
| 296 | saddr = InetSocketAddress.createUnresolved(phost, pport); | ||
| 297 | // Socks is *always* the last on the list. | ||
| 298 | if (j == (props[i].length - 1)) { | ||
| 299 | int version = NetProperties.getInteger(SOCKS_PROXY_VERSION, 5).intValue(); | ||
| 300 | return SocksProxy.create(saddr, version); | ||
| 301 | } else { | ||
| 302 | return new Proxy(Proxy.Type.HTTP, saddr); | ||
| 303 | } | ||
| 304 | } | ||
| 305 | } | ||
| 306 | return Proxy.NO_PROXY; | ||
| 307 | }}); | ||
| 308 | |||
| 309 | proxyl.add(p); | ||
| 310 | |||
| 311 | /* | ||
| 312 | * If no specific property was set for that URI, we should be | ||
| 313 | * returning an iterator to an empty List. | ||
| 314 | */ | ||
| 315 | return proxyl; | ||
| 316 | } | ||
| 317 | |||
| 318 | public void connectFailed(URI uri, SocketAddress sa, IOException ioe) { | ||
| 319 | if (uri == null || sa == null || ioe == null) { | ||
| 320 | throw new IllegalArgumentException("Arguments can't be null."); | ||
| 321 | } | ||
| 322 | // ignored | ||
| 323 | } | ||
| 324 | |||
| 325 | |||
| 326 | private int defaultPort(String protocol) { | ||
| 327 | if ("http".equalsIgnoreCase(protocol)) { | ||
| 328 | return 80; | ||
| 329 | } else if ("https".equalsIgnoreCase(protocol)) { | ||
| 330 | return 443; | ||
| 331 | } else if ("ftp".equalsIgnoreCase(protocol)) { | ||
| 332 | return 80; | ||
| 333 | } else if ("socket".equalsIgnoreCase(protocol)) { | ||
| 334 | return 1080; | ||
| 335 | } else if ("gopher".equalsIgnoreCase(protocol)) { | ||
| 336 | return 80; | ||
| 337 | } else { | ||
| 338 | return -1; | ||
| 339 | } | ||
| 340 | } | ||
| 341 | |||
| 342 | private native static boolean init(); | ||
| 343 | private native Proxy getSystemProxy(String protocol, String host); | ||
| 344 | } | ||