Source Code Cross Referenced for SslHttpChannelEndPoint.java in  » Sevlet-Container » jetty-extras » org » mortbay » jetty » security » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Sevlet Container » jetty extras » org.mortbay.jetty.security 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        package org.mortbay.jetty.security;
002:
003:        import java.io.IOException;
004:        import java.nio.ByteBuffer;
005:        import java.nio.channels.SelectionKey;
006:        import java.nio.channels.SocketChannel;
007:
008:        import javax.net.ssl.SSLEngine;
009:        import javax.net.ssl.SSLEngineResult;
010:        import javax.net.ssl.SSLException;
011:        import javax.net.ssl.SSLSession;
012:
013:        import org.mortbay.io.Buffer;
014:        import org.mortbay.io.nio.NIOBuffer;
015:        import org.mortbay.io.nio.SelectorManager;
016:        import org.mortbay.jetty.nio.SelectChannelConnector;
017:        import org.mortbay.log.Log;
018:
019:        /* ------------------------------------------------------------ */
020:        /**
021:         * SslHttpChannelEndPoint.
022:         * 
023:         * @author Nik Gonzalez <ngonzalez@exist.com>
024:         * @author Greg Wilkins <gregw@mortbay.com>
025:         */
026:        public class SslHttpChannelEndPoint extends
027:                SelectChannelConnector.ConnectorEndPoint implements  Runnable {
028:            private static ByteBuffer[] __NO_BUFFERS = {};
029:            private static ByteBuffer __EMPTY = ByteBuffer.allocate(0);
030:            private static SSLEngineResult _result;
031:
032:            private final SSLEngine _engine;
033:            private final ByteBuffer _inBuffer;
034:            private final NIOBuffer _inNIOBuffer;
035:            private final ByteBuffer _outBuffer;
036:            private final NIOBuffer _outNIOBuffer;
037:
038:            private ByteBuffer _reuseBuffer;
039:            private final ByteBuffer[] _outBuffers = new ByteBuffer[3];
040:
041:            // ssl
042:            private final SSLSession _session;
043:
044:            /* ------------------------------------------------------------ */
045:            public SslHttpChannelEndPoint(SocketChannel channel,
046:                    SelectorManager.SelectSet selectSet, SelectionKey key,
047:                    SSLEngine engine) throws SSLException, IOException {
048:                super (channel, selectSet, key);
049:
050:                // ssl
051:                _engine = engine;
052:                _engine.setUseClientMode(false);
053:                _session = engine.getSession();
054:
055:                _outNIOBuffer = new NIOBuffer(_session.getPacketBufferSize(),
056:                        true);
057:                _outBuffer = _outNIOBuffer.getByteBuffer();
058:                _inNIOBuffer = new NIOBuffer(_session.getPacketBufferSize(),
059:                        true);
060:                _inBuffer = _inNIOBuffer.getByteBuffer();
061:
062:            }
063:
064:            /* ------------------------------------------------------------ */
065:            public void close() throws IOException {
066:                _engine.closeOutbound();
067:
068:                try {
069:                    loop: while (_inBuffer.remaining() > 0) {
070:                        switch (_engine.getHandshakeStatus()) {
071:                        case FINISHED:
072:                        case NOT_HANDSHAKING:
073:                            break loop;
074:
075:                        case NEED_UNWRAP:
076:                            if (!fill(__EMPTY))
077:                                break loop; // TODO may need to reschedule?
078:                            break;
079:
080:                        case NEED_TASK: {
081:                            Runnable task;
082:                            while ((task = _engine.getDelegatedTask()) != null) {
083:                                task.run();
084:                            }
085:                            break;
086:                        }
087:
088:                        case NEED_WRAP: {
089:                            flush();
090:
091:                            SSLEngineResult result = null;
092:                            try {
093:                                _outBuffer.position(_outNIOBuffer.putIndex());
094:                                result = _engine.wrap(__NO_BUFFERS, _outBuffer);
095:                            } finally {
096:                                _outBuffer.position(0);
097:                                _outNIOBuffer.setGetIndex(0);
098:                                _outNIOBuffer.setPutIndex(result
099:                                        .bytesProduced());
100:                            }
101:
102:                            flush();
103:
104:                            break;
105:                        }
106:                        }
107:                    }
108:
109:                } finally {
110:                    super .close();
111:                }
112:
113:            }
114:
115:            /* ------------------------------------------------------------ */
116:            /* 
117:             */
118:            public int fill(Buffer buffer) throws IOException {
119:                ByteBuffer bbuf = extractInputBuffer(buffer);
120:                int size = buffer.length();
121:
122:                try {
123:                    fill(bbuf);
124:
125:                    loop: while (_inBuffer.remaining() > 0) {
126:                        switch (_engine.getHandshakeStatus()) {
127:                        case FINISHED:
128:                        case NOT_HANDSHAKING:
129:                            break loop;
130:
131:                        case NEED_UNWRAP:
132:                            if (!fill(bbuf))
133:                                break loop;
134:                            break;
135:
136:                        case NEED_TASK: {
137:                            Runnable task;
138:                            while ((task = _engine.getDelegatedTask()) != null) {
139:                                task.run();
140:                            }
141:                            break;
142:                        }
143:
144:                        case NEED_WRAP: {
145:                            flush();
146:
147:                            SSLEngineResult result = null;
148:                            try {
149:                                _outBuffer.position(_outNIOBuffer.putIndex());
150:                                result = _engine.wrap(__NO_BUFFERS, _outBuffer);
151:                            } finally {
152:                                _outBuffer.position(0);
153:                                _outNIOBuffer.setGetIndex(0);
154:                                _outNIOBuffer.setPutIndex(result
155:                                        .bytesProduced());
156:                            }
157:
158:                            flush();
159:
160:                            break;
161:                        }
162:                        }
163:                    }
164:
165:                } finally {
166:                    buffer.setPutIndex(bbuf.position());
167:                    bbuf.position(0);
168:                }
169:
170:                return buffer.length() - size;
171:            }
172:
173:            /* ------------------------------------------------------------ */
174:            public int flush(Buffer buffer) throws IOException {
175:                return flush(buffer, null, null);
176:            }
177:
178:            /* ------------------------------------------------------------ */
179:            /*     
180:             */
181:            public int flush(Buffer header, Buffer buffer, Buffer trailer)
182:                    throws IOException {
183:                if (_outNIOBuffer.length() > 0) {
184:                    flush();
185:                    if (_outNIOBuffer.length() > 0)
186:                        return 0;
187:                }
188:
189:                _outBuffers[0] = extractOutputBuffer(header);
190:                _outBuffers[1] = extractOutputBuffer(buffer);
191:                _outBuffers[2] = extractOutputBuffer(trailer);
192:
193:                try {
194:                    _outNIOBuffer.clear();
195:                    _outBuffer.position(0);
196:                    _outBuffer.limit(_outBuffer.capacity());
197:                    _result = _engine.wrap(_outBuffers, _outBuffer);
198:                } finally {
199:                    _outBuffer.position(0);
200:                    _outNIOBuffer.setGetIndex(0);
201:                    _outNIOBuffer.setPutIndex(_result.bytesProduced());
202:
203:                    int consumed = _result.bytesConsumed();
204:                    if (consumed > 0 && header != null) {
205:                        int len = consumed < header.length() ? consumed
206:                                : header.length();
207:                        header.skip(len);
208:                        consumed -= len;
209:                        _outBuffers[0].position(0);
210:                        _outBuffers[0].limit(_outBuffers[0].capacity());
211:                    }
212:                    if (consumed > 0 && buffer != null) {
213:                        int len = consumed < buffer.length() ? consumed
214:                                : buffer.length();
215:                        buffer.skip(len);
216:                        consumed -= len;
217:                        _outBuffers[1].position(0);
218:                        _outBuffers[1].limit(_outBuffers[1].capacity());
219:                    }
220:                    if (consumed > 0 && trailer != null) {
221:                        int len = consumed < trailer.length() ? consumed
222:                                : trailer.length();
223:                        trailer.skip(len);
224:                        consumed -= len;
225:                        _outBuffers[1].position(0);
226:                        _outBuffers[1].limit(_outBuffers[1].capacity());
227:                    }
228:                    assert consumed == 0;
229:                }
230:
231:                flush();
232:
233:                return _result.bytesConsumed();
234:            }
235:
236:            /* ------------------------------------------------------------ */
237:            public void flush() throws IOException {
238:                while (_outNIOBuffer.length() > 0) {
239:                    int flushed = super .flush(_outNIOBuffer);
240:                    if (flushed == 0) {
241:                        Thread.yield();
242:                        flushed = super .flush(_outNIOBuffer);
243:                        if (flushed == 0)
244:                            return;
245:                    }
246:                }
247:            }
248:
249:            /* ------------------------------------------------------------ */
250:            private ByteBuffer extractInputBuffer(Buffer buffer) {
251:                assert buffer instanceof  NIOBuffer;
252:                NIOBuffer nbuf = (NIOBuffer) buffer;
253:                ByteBuffer bbuf = nbuf.getByteBuffer();
254:                bbuf.position(buffer.putIndex());
255:                return bbuf;
256:            }
257:
258:            /* ------------------------------------------------------------ */
259:            private ByteBuffer extractOutputBuffer(Buffer buffer) {
260:                if (buffer == null)
261:                    return __EMPTY;
262:
263:                ByteBuffer src = null;
264:                NIOBuffer nBuf = null;
265:
266:                if (buffer.buffer() instanceof  NIOBuffer) {
267:                    nBuf = (NIOBuffer) buffer.buffer();
268:                    src = nBuf.getByteBuffer();
269:                } else {
270:                    if (_reuseBuffer == null) {
271:                        _reuseBuffer = ByteBuffer.allocateDirect(_session
272:                                .getPacketBufferSize());
273:                    }
274:                    _reuseBuffer.put(buffer.asArray());
275:                    src = _reuseBuffer;
276:                }
277:
278:                if (src != null) {
279:                    src.position(buffer.getIndex());
280:                    src.limit(buffer.putIndex());
281:                }
282:
283:                return src;
284:            }
285:
286:            /* ------------------------------------------------------------ */
287:            private boolean fill(ByteBuffer buffer) throws IOException {
288:                int in_len = 0;
289:
290:                if (!_inNIOBuffer.hasContent()
291:                        || (_result != null && _result.getStatus() == SSLEngineResult.Status.BUFFER_UNDERFLOW)) {
292:                    _inNIOBuffer.clear();
293:                    while (_inNIOBuffer.space() > 0) {
294:                        int len = super .fill(_inNIOBuffer);
295:                        if (len <= 0)
296:                            break;
297:                        in_len += len;
298:                    }
299:                }
300:
301:                if (_inNIOBuffer.length() == 0)
302:                    return false;
303:
304:                try {
305:                    _inBuffer.position(_inNIOBuffer.getIndex());
306:                    _inBuffer.limit(_inNIOBuffer.putIndex());
307:                    _result = _engine.unwrap(_inBuffer, buffer);
308:                    if (_result != null) {
309:                        if (_result.getStatus() == SSLEngineResult.Status.OK)
310:                            _inNIOBuffer.skip(_result.bytesConsumed());
311:                        else if (_result.getStatus() == SSLEngineResult.Status.CLOSED)
312:                            throw new IOException("sslEngine closed");
313:                    }
314:
315:                } finally {
316:                    _inBuffer.position(0);
317:                    _inBuffer.limit(_inBuffer.capacity());
318:                }
319:
320:                switch (_result.getStatus()) {
321:                case OK:
322:                case CLOSED:
323:                    break;
324:                case BUFFER_UNDERFLOW:
325:                    break;
326:                case BUFFER_OVERFLOW:
327:                    buffer.clear();
328:                    break;
329:                default:
330:                    Log.warn("unwrap " + _result);
331:                    throw new IOException(_result.toString());
332:                }
333:
334:                return (_result.bytesProduced() + _result.bytesConsumed()) > 0;
335:            }
336:
337:            /* ------------------------------------------------------------ */
338:            /**
339:             * Updates selection key. Adds operations types to the selection key as needed. No operations
340:             * are removed as this is only done during dispatch. This method records the new key and
341:             * schedules a call to syncKey to do the keyChange
342:             */
343:            protected void updateKey() {
344:                synchronized (this ) {
345:                    int ops = _key == null ? 0 : _key.interestOps();
346:                    _interestOps = ops
347:                            | ((!_dispatched || _readBlocked) ? SelectionKey.OP_READ
348:                                    : 0)
349:                            | (_writable && !_writeBlocked
350:                                    && !isBufferingOutput() ? 0
351:                                    : SelectionKey.OP_WRITE);
352:                    _writable = true; // Once writable is in ops, only removed with dispatch.
353:
354:                    if (_interestOps != ops) {
355:                        _selectSet.addChange(this );
356:                        _selectSet.wakeup();
357:                    }
358:                }
359:            }
360:
361:            /* ------------------------------------------------------------ */
362:            public boolean isBufferingInput() {
363:                return _inNIOBuffer.hasContent();
364:            }
365:
366:            /* ------------------------------------------------------------ */
367:            public boolean isBufferingOutput() {
368:                return _outNIOBuffer.hasContent();
369:            }
370:
371:            /* ------------------------------------------------------------ */
372:            public boolean isBufferred() {
373:                return true;
374:            }
375:
376:            public SSLEngine getSSLEngine() {
377:                return _engine;
378:            }
379:        }
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