Source Code Cross Referenced for ProxySocketFactory.java in  » IDE-Netbeans » versioning » org » netbeans » modules » proxy » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » IDE Netbeans » versioning » org.netbeans.modules.proxy 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
003:         *
004:         * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005:         *
006:         * The contents of this file are subject to the terms of either the GNU
007:         * General Public License Version 2 only ("GPL") or the Common
008:         * Development and Distribution License("CDDL") (collectively, the
009:         * "License"). You may not use this file except in compliance with the
010:         * License. You can obtain a copy of the License at
011:         * http://www.netbeans.org/cddl-gplv2.html
012:         * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
013:         * specific language governing permissions and limitations under the
014:         * License.  When distributing the software, include this License Header
015:         * Notice in each file and include the License file at
016:         * nbbuild/licenses/CDDL-GPL-2-CP.  Sun designates this
017:         * particular file as subject to the "Classpath" exception as provided
018:         * by Sun in the GPL Version 2 section of the License file that
019:         * accompanied this code. If applicable, add the following below the
020:         * License Header, with the fields enclosed by brackets [] replaced by
021:         * your own identifying information:
022:         * "Portions Copyrighted [year] [name of copyright owner]"
023:         *
024:         * Contributor(s):
025:         *
026:         * The Original Software is NetBeans. The Initial Developer of the Original
027:         * Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun
028:         * Microsystems, Inc. All Rights Reserved.
029:         *
030:         * If you wish your version of this file to be governed by only the CDDL
031:         * or only the GPL Version 2, indicate your decision by adding
032:         * "[Contributor] elects to include this software in this distribution
033:         * under the [CDDL or GPL Version 2] license." If you do not indicate a
034:         * single choice of license, a recipient has the option to distribute
035:         * your version of this file under either the CDDL, the GPL Version 2 or
036:         * to extend the choice of license to its licensees as provided above.
037:         * However, if you add GPL Version 2 code and therefore, elected the GPL
038:         * Version 2 license, then the option applies only if the new code is
039:         * made subject to such option by the copyright holder.
040:         */
041:        package org.netbeans.modules.proxy;
042:
043:        import javax.net.SocketFactory;
044:        import java.net.*;
045:        import java.util.*;
046:        import java.util.prefs.Preferences;
047:        import java.util.regex.Pattern;
048:        import java.io.*;
049:        import java.nio.channels.SocketChannel;
050:
051:        /**
052:         * Creates sockets capable of connecting through HTTPS and SOCKS proxies.
053:         * 
054:         * @author Maros Sandor
055:         */
056:        public class ProxySocketFactory extends SocketFactory {
057:
058:            private static final int CONNECT_TIMEOUT = 1000 * 20; /// 20 seconds timeout
059:
060:            private static final String USE_PROXY_AUTHENTICATION = "useProxyAuthentication";
061:            private static final String PROXY_AUTHENTICATION_USERNAME = "proxyAuthenticationUsername";
062:            private static final String PROXY_AUTHENTICATION_PASSWORD = "proxyAuthenticationPassword";
063:
064:            private static final String AUTH_NONE = "<none>";
065:            private static final String AUTH_BASIC = "Basic";
066:            private static final Pattern sConnectionEstablishedPattern = Pattern
067:                    .compile("HTTP\\/\\d+\\.\\d+\\s+200\\s+");
068:            private static final Pattern sProxyAuthRequiredPattern = Pattern
069:                    .compile("HTTP\\/\\d+\\.\\d+\\s+407\\s+");
070:
071:            private static final ProxySocketFactory instance = new ProxySocketFactory();
072:
073:            private final Map<InetSocketAddress, ConnectivitySettings> lastKnownSettings = Collections
074:                    .synchronizedMap(new HashMap<InetSocketAddress, ConnectivitySettings>(
075:                            2));
076:
077:            public static ProxySocketFactory getDefault() {
078:                return instance;
079:            }
080:
081:            private ProxySocketFactory() {
082:            }
083:
084:            /**
085:             * Creates probe socket that supports only
086:             * connect(SocketAddressm, int timeout).
087:             */
088:            public Socket createSocket() throws IOException {
089:                return new Socket() {
090:                    public void connect(SocketAddress endpoint, int timeout)
091:                            throws IOException {
092:                        Socket s = createSocket((InetSocketAddress) endpoint,
093:                                timeout);
094:                        s.close();
095:                    }
096:
097:                    public void bind(SocketAddress bindpoint) {
098:                        throw new UnsupportedOperationException();
099:                    }
100:
101:                    protected Object clone() {
102:                        throw new UnsupportedOperationException();
103:                    }
104:
105:                    public synchronized void close() {
106:                    }
107:
108:                    public void connect(SocketAddress endpoint) {
109:                        throw new UnsupportedOperationException();
110:                    }
111:
112:                    public SocketChannel getChannel() {
113:                        throw new UnsupportedOperationException();
114:                    }
115:
116:                    public InetAddress getInetAddress() {
117:                        throw new UnsupportedOperationException();
118:                    }
119:
120:                    public InputStream getInputStream() {
121:                        throw new UnsupportedOperationException();
122:                    }
123:
124:                    public boolean getKeepAlive() {
125:                        throw new UnsupportedOperationException();
126:                    }
127:
128:                    public InetAddress getLocalAddress() {
129:                        throw new UnsupportedOperationException();
130:                    }
131:
132:                    public int getLocalPort() {
133:                        throw new UnsupportedOperationException();
134:                    }
135:
136:                    public SocketAddress getLocalSocketAddress() {
137:                        throw new UnsupportedOperationException();
138:                    }
139:
140:                    public boolean getOOBInline() {
141:                        throw new UnsupportedOperationException();
142:                    }
143:
144:                    public OutputStream getOutputStream() {
145:                        throw new UnsupportedOperationException();
146:                    }
147:
148:                    public int getPort() {
149:                        throw new UnsupportedOperationException();
150:                    }
151:
152:                    public synchronized int getReceiveBufferSize() {
153:                        throw new UnsupportedOperationException();
154:                    }
155:
156:                    public SocketAddress getRemoteSocketAddress() {
157:                        throw new UnsupportedOperationException();
158:                    }
159:
160:                    public boolean getReuseAddress() {
161:                        throw new UnsupportedOperationException();
162:                    }
163:
164:                    public synchronized int getSendBufferSize() {
165:                        throw new UnsupportedOperationException();
166:                    }
167:
168:                    public int getSoLinger() {
169:                        throw new UnsupportedOperationException();
170:                    }
171:
172:                    public synchronized int getSoTimeout() {
173:                        throw new UnsupportedOperationException();
174:                    }
175:
176:                    public boolean getTcpNoDelay() {
177:                        throw new UnsupportedOperationException();
178:                    }
179:
180:                    public int getTrafficClass() {
181:                        throw new UnsupportedOperationException();
182:                    }
183:
184:                    public boolean isBound() {
185:                        throw new UnsupportedOperationException();
186:                    }
187:
188:                    public boolean isClosed() {
189:                        throw new UnsupportedOperationException();
190:                    }
191:
192:                    public boolean isConnected() {
193:                        throw new UnsupportedOperationException();
194:                    }
195:
196:                    public boolean isInputShutdown() {
197:                        throw new UnsupportedOperationException();
198:                    }
199:
200:                    public boolean isOutputShutdown() {
201:                        throw new UnsupportedOperationException();
202:                    }
203:
204:                    public void sendUrgentData(int data) {
205:                        throw new UnsupportedOperationException();
206:                    }
207:
208:                    public void setKeepAlive(boolean on) {
209:                        throw new UnsupportedOperationException();
210:                    }
211:
212:                    public void setOOBInline(boolean on) {
213:                        throw new UnsupportedOperationException();
214:                    }
215:
216:                    public synchronized void setReceiveBufferSize(int size) {
217:                        throw new UnsupportedOperationException();
218:                    }
219:
220:                    public void setReuseAddress(boolean on) {
221:                        throw new UnsupportedOperationException();
222:                    }
223:
224:                    public synchronized void setSendBufferSize(int size) {
225:                        throw new UnsupportedOperationException();
226:                    }
227:
228:                    public void setSoLinger(boolean on, int linger) {
229:                        throw new UnsupportedOperationException();
230:                    }
231:
232:                    public synchronized void setSoTimeout(int timeout) {
233:                        throw new UnsupportedOperationException();
234:                    }
235:
236:                    public void setTcpNoDelay(boolean on) {
237:                        throw new UnsupportedOperationException();
238:                    }
239:
240:                    public void setTrafficClass(int tc) {
241:                        throw new UnsupportedOperationException();
242:                    }
243:
244:                    public void shutdownInput() {
245:                        throw new UnsupportedOperationException();
246:                    }
247:
248:                    public void shutdownOutput() {
249:                        throw new UnsupportedOperationException();
250:                    }
251:                };
252:            }
253:
254:            public Socket createSocket(String host, int port)
255:                    throws IOException {
256:                return createSocket(new InetSocketAddress(host, port),
257:                        CONNECT_TIMEOUT);
258:            }
259:
260:            public Socket createSocket(InetAddress inetAddress, int port)
261:                    throws IOException {
262:                return createSocket(new InetSocketAddress(inetAddress, port),
263:                        CONNECT_TIMEOUT);
264:            }
265:
266:            public Socket createSocket(String s, int i,
267:                    InetAddress inetAddress, int i1) throws IOException {
268:                throw new IOException("Unsupported operation");
269:            }
270:
271:            public Socket createSocket(InetAddress inetAddress, int i,
272:                    InetAddress inetAddress1, int i1) throws IOException {
273:                throw new IOException("Unsupported operation");
274:            }
275:
276:            /**
277:             * Connects to the remote machine by establishing a tunnel through a HTTP proxy. It issues a CONNECT request and
278:             * eventually authenticates with the HTTP proxy. Supported authentication methods include: Basic.
279:             *
280:             * @param address remote machine to connect to
281:             * @return a TCP/IP socket connected to the remote machine
282:             * @throws UnknownHostException if the proxy host name cannot be resolved
283:             * @throws IOException          if an I/O error occurs during handshake (a network problem)
284:             */
285:            private Socket getHttpsTunnelSocket(InetSocketAddress address,
286:                    ConnectivitySettings cs, int timeout) throws IOException {
287:                Socket proxy = new Socket();
288:                proxy.connect(new InetSocketAddress(cs.getProxyHost(), cs
289:                        .getProxyPort()), timeout);
290:                BufferedReader r = new BufferedReader(new InputStreamReader(
291:                        new InterruptibleInputStream(proxy.getInputStream())));
292:                DataOutputStream dos = new DataOutputStream(proxy
293:                        .getOutputStream());
294:
295:                dos.writeBytes("CONNECT ");
296:                dos.writeBytes(address.getHostName() + ":" + address.getPort());
297:                dos.writeBytes(" HTTP/1.0\r\n");
298:                dos.writeBytes("Connection: Keep-Alive\r\n\r\n");
299:                dos.flush();
300:
301:                String line;
302:                line = r.readLine();
303:
304:                if (sConnectionEstablishedPattern.matcher(line).find()) {
305:                    for (;;) {
306:                        line = r.readLine();
307:                        if (line.length() == 0)
308:                            break;
309:                    }
310:                    return proxy;
311:                } else if (sProxyAuthRequiredPattern.matcher(line).find()) {
312:                    boolean authMethodSelected = false;
313:                    String authMethod = AUTH_NONE;
314:                    for (;;) {
315:                        line = r.readLine();
316:                        if (line.length() == 0)
317:                            break;
318:                        if (line.startsWith("Proxy-Authenticate:")
319:                                && !authMethodSelected) {
320:                            authMethod = line.substring(19).trim();
321:                            if (authMethod.equals(AUTH_BASIC)) {
322:                                authMethodSelected = true;
323:                            }
324:                        }
325:                    }
326:                    // TODO: need to read full response before closing connection?
327:                    proxy.close();
328:
329:                    if (authMethod.startsWith(AUTH_BASIC)) {
330:                        return authenticateBasic(address, cs);
331:                    } else {
332:                        throw new IOException(
333:                                "Unsupported authentication method: "
334:                                        + authMethod);
335:                    }
336:                } else {
337:                    proxy.close();
338:                    throw new IOException(
339:                            "HTTP proxy does not support CONNECT command. Received reply: "
340:                                    + line);
341:                }
342:            }
343:
344:            /**
345:             * Connects to the remote machine by establishing a tunnel through a HTTP proxy with Basic authentication.
346:             * It issues a CONNECT request and authenticates with the HTTP proxy with Basic protocol.
347:             *
348:             * @param address remote machine to connect to
349:             * @return a TCP/IP socket connected to the remote machine
350:             * @throws IOException     if an I/O error occurs during handshake (a network problem)
351:             */
352:            private Socket authenticateBasic(InetSocketAddress address,
353:                    ConnectivitySettings cs) throws IOException {
354:                Socket proxy = new Socket(cs.getProxyHost(), cs.getProxyPort());
355:                BufferedReader r = new BufferedReader(new InputStreamReader(
356:                        new InterruptibleInputStream(proxy.getInputStream())));
357:                DataOutputStream dos = new DataOutputStream(proxy
358:                        .getOutputStream());
359:
360:                String username = cs.getProxyUsername() == null ? "" : cs
361:                        .getProxyUsername();
362:                String password = cs.getProxyPassword() == null ? "" : String
363:                        .valueOf(cs.getProxyPassword());
364:                String credentials = username + ":" + password;
365:                String basicCookie = Base64Encoder.encode(credentials
366:                        .getBytes("US-ASCII"));
367:
368:                dos.writeBytes("CONNECT ");
369:                dos.writeBytes(address.getHostName() + ":" + address.getPort());
370:                dos.writeBytes(" HTTP/1.0\r\n");
371:                dos.writeBytes("Connection: Keep-Alive\r\n");
372:                dos.writeBytes("Proxy-Authorization: Basic " + basicCookie
373:                        + "\r\n");
374:                dos.writeBytes("\r\n");
375:                dos.flush();
376:
377:                String line = r.readLine();
378:                if (sConnectionEstablishedPattern.matcher(line).find()) {
379:                    for (;;) {
380:                        line = r.readLine();
381:                        if (line.length() == 0)
382:                            break;
383:                    }
384:                    return proxy;
385:                }
386:                throw new IOException("Basic authentication failed: " + line);
387:            }
388:
389:            /**
390:             * Creates a new Socket connected to the given IP address. The method uses connection settings supplied
391:             * in the constructor for connecting the socket.
392:             *
393:             * @param address the IP address to connect to
394:             * @return connected socket
395:             * @throws java.net.UnknownHostException  if the hostname of the address or the proxy cannot be resolved
396:             * @throws java.io.IOException            if an I/O error occured while connecting to the remote end or to the proxy
397:             */
398:            private Socket createSocket(InetSocketAddress address, int timeout)
399:                    throws IOException {
400:                String socksProxyHost = System.getProperty("socksProxyHost");
401:                System.getProperties().remove("socksProxyHost");
402:                try {
403:                    ConnectivitySettings cs = lastKnownSettings.get(address);
404:                    if (cs != null) {
405:                        try {
406:                            return createSocket(cs, address, timeout);
407:                        } catch (IOException e) {
408:                            // not good anymore, try all proxies
409:                            lastKnownSettings.remove(address);
410:                        }
411:                    }
412:
413:                    URI uri = addressToURI(address, "socket");
414:                    try {
415:                        return createSocket(uri, address, timeout);
416:                    } catch (IOException e) {
417:                        // we will also try https
418:                    }
419:
420:                    uri = addressToURI(address, "https");
421:                    return createSocket(uri, address, timeout);
422:
423:                } finally {
424:                    if (socksProxyHost != null) {
425:                        System.setProperty("socksProxyHost", socksProxyHost);
426:                    }
427:                }
428:            }
429:
430:            private URI addressToURI(InetSocketAddress address, String schema) {
431:                URI uri;
432:                try {
433:                    if (address.isUnresolved()) {
434:                        uri = new URI(schema + "://" + address.getHostName()
435:                                + ":" + address.getPort());
436:                    } else {
437:                        uri = new URI(schema + "://"
438:                                + address.getAddress().getHostAddress() + ":"
439:                                + address.getPort());
440:                    }
441:                } catch (URISyntaxException e) {
442:                    throw new RuntimeException(e);
443:                }
444:                return uri;
445:            }
446:
447:            private Socket createSocket(URI uri, InetSocketAddress address,
448:                    int timeout) throws IOException {
449:                List<Proxy> proxies = ProxySelector.getDefault().select(uri);
450:                IOException lastFailure = null;
451:                for (Proxy proxy : proxies) {
452:                    ConnectivitySettings cs = proxyToCs(proxy);
453:                    try {
454:                        Socket s = createSocket(cs, address, timeout);
455:                        lastKnownSettings.put(address, cs);
456:                        return s;
457:                    } catch (IOException e) {
458:                        lastFailure = e;
459:                    }
460:                }
461:
462:                throw lastFailure;
463:            }
464:
465:            private ConnectivitySettings proxyToCs(Proxy proxy) {
466:                ConnectivitySettings cs = new ConnectivitySettings();
467:                InetSocketAddress isa = (InetSocketAddress) proxy.address();
468:                switch (proxy.type()) {
469:                case HTTP:
470:                    setupProxy(cs, ConnectivitySettings.CONNECTION_VIA_HTTPS,
471:                            isa);
472:                    break;
473:                case SOCKS:
474:                    setupProxy(cs, ConnectivitySettings.CONNECTION_VIA_SOCKS,
475:                            isa);
476:                    break;
477:                default:
478:                }
479:
480:                Preferences prefs = org.openide.util.NbPreferences.root().node(
481:                        "org/netbeans/core"); // NOI18N    
482:                if (prefs.getBoolean(USE_PROXY_AUTHENTICATION, false)) {
483:                    cs.setProxyUsername(prefs.get(
484:                            PROXY_AUTHENTICATION_USERNAME, null));
485:                    cs.setProxyPassword(prefs.get(
486:                            PROXY_AUTHENTICATION_PASSWORD, null).toCharArray());
487:                }
488:                return cs;
489:            }
490:
491:            private void setupProxy(ConnectivitySettings cs,
492:                    int connectionType, InetSocketAddress inetSocketAddress) {
493:                cs.setConnectionType(connectionType);
494:                InetAddress address = inetSocketAddress.getAddress();
495:                cs.setProxyHost((address != null) ? address.getHostAddress()
496:                        : inetSocketAddress.getHostName());
497:                cs.setProxyPort(inetSocketAddress.getPort());
498:            }
499:
500:            private Socket createSocket(ConnectivitySettings cs,
501:                    InetSocketAddress address, int timeout) throws IOException {
502:                switch (cs.getConnectionType()) {
503:                case ConnectivitySettings.CONNECTION_VIA_SOCKS:
504:                case ConnectivitySettings.CONNECTION_DIRECT:
505:                    Socket s = new Socket();
506:                    s.connect(address, timeout);
507:                    return s;
508:
509:                case ConnectivitySettings.CONNECTION_VIA_HTTPS:
510:                    return getHttpsTunnelSocket(address, cs, timeout);
511:
512:                default:
513:                    throw new IllegalArgumentException(
514:                            "Illegal connection type: "
515:                                    + cs.getConnectionType());
516:                }
517:            }
518:        }
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