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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 | +} | |