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1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 :
20 : #include "acceptor.hxx"
21 :
22 : #include <boost/unordered_set.hpp>
23 : #include <algorithm>
24 :
25 : #include <rtl/ustrbuf.hxx>
26 : #include <com/sun/star/connection/XConnectionBroadcaster.hpp>
27 : #include <com/sun/star/connection/ConnectionSetupException.hpp>
28 :
29 : #include <cppuhelper/implbase2.hxx>
30 :
31 : using namespace ::osl;
32 : using namespace ::rtl;
33 : using namespace ::cppu;
34 : using namespace ::com::sun::star::uno;
35 : using namespace ::com::sun::star::io;
36 : using namespace ::com::sun::star::connection;
37 :
38 :
39 : namespace io_acceptor {
40 : template<class T>
41 : struct ReferenceHash
42 : {
43 0 : size_t operator () (const ::com::sun::star::uno::Reference<T> & ref) const
44 : {
45 0 : return (size_t)ref.get();
46 : }
47 : };
48 :
49 : template<class T>
50 : struct ReferenceEqual
51 : {
52 0 : sal_Bool operator () (const ::com::sun::star::uno::Reference<T> & op1,
53 : const ::com::sun::star::uno::Reference<T> & op2) const
54 : {
55 0 : return op1.get() == op2.get();
56 : }
57 : };
58 :
59 :
60 : typedef ::boost::unordered_set< ::com::sun::star::uno::Reference< ::com::sun::star::io::XStreamListener>,
61 : ReferenceHash< ::com::sun::star::io::XStreamListener>,
62 : ReferenceEqual< ::com::sun::star::io::XStreamListener> >
63 : XStreamListener_hash_set;
64 :
65 :
66 : class SocketConnection : public ::cppu::WeakImplHelper2<
67 : ::com::sun::star::connection::XConnection,
68 : ::com::sun::star::connection::XConnectionBroadcaster>
69 :
70 : {
71 : public:
72 : SocketConnection( const OUString & sConnectionDescription );
73 : ~SocketConnection();
74 :
75 : virtual sal_Int32 SAL_CALL read( ::com::sun::star::uno::Sequence< sal_Int8 >& aReadBytes,
76 : sal_Int32 nBytesToRead )
77 : throw(::com::sun::star::io::IOException,
78 : ::com::sun::star::uno::RuntimeException);
79 : virtual void SAL_CALL write( const ::com::sun::star::uno::Sequence< sal_Int8 >& aData )
80 : throw(::com::sun::star::io::IOException,
81 : ::com::sun::star::uno::RuntimeException);
82 : virtual void SAL_CALL flush( ) throw(
83 : ::com::sun::star::io::IOException,
84 : ::com::sun::star::uno::RuntimeException);
85 : virtual void SAL_CALL close( )
86 : throw(::com::sun::star::io::IOException,
87 : ::com::sun::star::uno::RuntimeException);
88 : virtual OUString SAL_CALL getDescription( )
89 : throw(::com::sun::star::uno::RuntimeException);
90 :
91 : // XConnectionBroadcaster
92 : virtual void SAL_CALL addStreamListener(const ::com::sun::star::uno::Reference< ::com::sun::star::io::XStreamListener>& aListener)
93 : throw(::com::sun::star::uno::RuntimeException);
94 : virtual void SAL_CALL removeStreamListener(const ::com::sun::star::uno::Reference< ::com::sun::star::io::XStreamListener>& aListener)
95 : throw(::com::sun::star::uno::RuntimeException);
96 :
97 : public:
98 : void completeConnectionString();
99 :
100 : ::osl::StreamSocket m_socket;
101 : ::osl::SocketAddr m_addr;
102 : oslInterlockedCount m_nStatus;
103 : OUString m_sDescription;
104 :
105 : ::osl::Mutex _mutex;
106 : sal_Bool _started;
107 : sal_Bool _closed;
108 : sal_Bool _error;
109 : XStreamListener_hash_set _listeners;
110 : };
111 :
112 : template<class T>
113 0 : void notifyListeners(SocketConnection * pCon, sal_Bool * notified, T t)
114 : {
115 0 : XStreamListener_hash_set listeners;
116 :
117 : {
118 0 : ::osl::MutexGuard guard(pCon->_mutex);
119 0 : if(!*notified)
120 : {
121 0 : *notified = sal_True;
122 0 : listeners = pCon->_listeners;
123 : }
124 : }
125 :
126 0 : ::std::for_each(listeners.begin(), listeners.end(), t);
127 0 : }
128 :
129 0 : static void callStarted(Reference<XStreamListener> xStreamListener)
130 : {
131 0 : xStreamListener->started();
132 0 : }
133 :
134 : struct callError {
135 : const Any & any;
136 :
137 : callError(const Any & any);
138 :
139 : void operator () (Reference<XStreamListener> xStreamListener);
140 : };
141 :
142 0 : callError::callError(const Any & aAny)
143 0 : : any(aAny)
144 : {
145 0 : }
146 :
147 0 : void callError::operator () (Reference<XStreamListener> xStreamListener)
148 : {
149 0 : xStreamListener->error(any);
150 0 : }
151 :
152 0 : static void callClosed(Reference<XStreamListener> xStreamListener)
153 : {
154 0 : xStreamListener->closed();
155 0 : }
156 :
157 :
158 0 : SocketConnection::SocketConnection( const OUString &sConnectionDescription) :
159 : m_nStatus( 0 ),
160 : m_sDescription( sConnectionDescription ),
161 : _started(sal_False),
162 : _closed(sal_False),
163 0 : _error(sal_False)
164 : {
165 0 : g_moduleCount.modCnt.acquire( &g_moduleCount.modCnt );
166 : // make it unique
167 0 : m_sDescription += OUString( ",uniqueValue=" ) ;
168 : m_sDescription += OUString::valueOf(
169 : sal::static_int_cast< sal_Int64 >(
170 : reinterpret_cast< sal_IntPtr >(&m_socket)),
171 0 : 10 );
172 0 : }
173 :
174 0 : SocketConnection::~SocketConnection()
175 : {
176 0 : g_moduleCount.modCnt.release( &g_moduleCount.modCnt );
177 0 : }
178 :
179 0 : void SocketConnection::completeConnectionString()
180 : {
181 0 : OUStringBuffer buf( 256 );
182 0 : buf.appendAscii( ",peerPort=" );
183 0 : buf.append( (sal_Int32) m_socket.getPeerPort() );
184 0 : buf.appendAscii( ",peerHost=" );
185 0 : buf.append( m_socket.getPeerHost( ) );
186 :
187 0 : buf.appendAscii( ",localPort=" );
188 0 : buf.append( (sal_Int32) m_socket.getLocalPort() );
189 0 : buf.appendAscii( ",localHost=" );
190 0 : buf.append( m_socket.getLocalHost() );
191 :
192 0 : m_sDescription += buf.makeStringAndClear();
193 0 : }
194 :
195 0 : sal_Int32 SocketConnection::read( Sequence < sal_Int8 > & aReadBytes , sal_Int32 nBytesToRead )
196 : throw(::com::sun::star::io::IOException,
197 : ::com::sun::star::uno::RuntimeException)
198 : {
199 0 : if( ! m_nStatus )
200 : {
201 0 : notifyListeners(this, &_started, callStarted);
202 :
203 0 : if( aReadBytes.getLength() != nBytesToRead )
204 : {
205 0 : aReadBytes.realloc( nBytesToRead );
206 : }
207 :
208 0 : sal_Int32 i = 0;
209 0 : i = m_socket.read( aReadBytes.getArray() , aReadBytes.getLength() );
210 :
211 0 : if(i != nBytesToRead)
212 : {
213 0 : OUString message("acc_socket.cxx:SocketConnection::read: error - ");
214 0 : message += m_socket.getErrorAsString();
215 :
216 0 : IOException ioException(message, Reference<XInterface>(static_cast<XConnection *>(this)));
217 :
218 0 : Any any;
219 0 : any <<= ioException;
220 :
221 0 : notifyListeners(this, &_error, callError(any));
222 :
223 0 : throw ioException;
224 : }
225 :
226 0 : return i;
227 : }
228 : else
229 : {
230 0 : OUString message("acc_socket.cxx:SocketConnection::read: error - connection already closed");
231 :
232 0 : IOException ioException(message, Reference<XInterface>(static_cast<XConnection *>(this)));
233 :
234 0 : Any any;
235 0 : any <<= ioException;
236 :
237 0 : notifyListeners(this, &_error, callError(any));
238 :
239 0 : throw ioException;
240 : }
241 : }
242 :
243 0 : void SocketConnection::write( const Sequence < sal_Int8 > &seq )
244 : throw(::com::sun::star::io::IOException,
245 : ::com::sun::star::uno::RuntimeException)
246 : {
247 0 : if( ! m_nStatus )
248 : {
249 0 : if( m_socket.write( seq.getConstArray() , seq.getLength() ) != seq.getLength() )
250 : {
251 0 : OUString message("acc_socket.cxx:SocketConnection::write: error - ");
252 0 : message += m_socket.getErrorAsString();
253 :
254 0 : IOException ioException(message, Reference<XInterface>(static_cast<XConnection *>(this)));
255 :
256 0 : Any any;
257 0 : any <<= ioException;
258 :
259 0 : notifyListeners(this, &_error, callError(any));
260 :
261 0 : throw ioException;
262 : }
263 : }
264 : else
265 : {
266 0 : OUString message("acc_socket.cxx:SocketConnection::write: error - connection already closed");
267 :
268 0 : IOException ioException(message, Reference<XInterface>(static_cast<XConnection *>(this)));
269 :
270 0 : Any any;
271 0 : any <<= ioException;
272 :
273 0 : notifyListeners(this, &_error, callError(any));
274 :
275 0 : throw ioException;
276 : }
277 0 : }
278 :
279 0 : void SocketConnection::flush( )
280 : throw(::com::sun::star::io::IOException,
281 : ::com::sun::star::uno::RuntimeException)
282 : {
283 :
284 0 : }
285 :
286 0 : void SocketConnection::close()
287 : throw(::com::sun::star::io::IOException,
288 : ::com::sun::star::uno::RuntimeException)
289 : {
290 : // enshure close is called only once
291 0 : if( 1 == osl_atomic_increment( (&m_nStatus) ) )
292 : {
293 0 : m_socket.shutdown();
294 0 : notifyListeners(this, &_closed, callClosed);
295 : }
296 0 : }
297 :
298 0 : OUString SocketConnection::getDescription()
299 : throw( ::com::sun::star::uno::RuntimeException)
300 : {
301 0 : return m_sDescription;
302 : }
303 :
304 :
305 : // XConnectionBroadcaster
306 0 : void SAL_CALL SocketConnection::addStreamListener(const Reference<XStreamListener> & aListener) throw(RuntimeException)
307 : {
308 0 : MutexGuard guard(_mutex);
309 :
310 0 : _listeners.insert(aListener);
311 0 : }
312 :
313 0 : void SAL_CALL SocketConnection::removeStreamListener(const Reference<XStreamListener> & aListener) throw(RuntimeException)
314 : {
315 0 : MutexGuard guard(_mutex);
316 :
317 0 : _listeners.erase(aListener);
318 0 : }
319 :
320 0 : SocketAcceptor::SocketAcceptor( const OUString &sSocketName,
321 : sal_uInt16 nPort,
322 : sal_Bool bTcpNoDelay,
323 : const OUString &sConnectionDescription) :
324 : m_sSocketName( sSocketName ),
325 : m_sConnectionDescription( sConnectionDescription ),
326 : m_nPort( nPort ),
327 : m_bTcpNoDelay( bTcpNoDelay ),
328 0 : m_bClosed( sal_False )
329 : {
330 0 : }
331 :
332 :
333 0 : void SocketAcceptor::init()
334 : {
335 0 : if( ! m_addr.setPort( m_nPort ) )
336 : {
337 0 : OUStringBuffer message( 128 );
338 0 : message.appendAscii( "acc_socket.cxx:SocketAcceptor::init - error - invalid tcp/ip port " );
339 0 : message.append( (sal_Int32) m_nPort );
340 : throw ConnectionSetupException(
341 0 : message.makeStringAndClear() , Reference< XInterface> () );
342 : }
343 0 : if( ! m_addr.setHostname( m_sSocketName.pData ) )
344 : {
345 0 : OUStringBuffer message( 128 );
346 0 : message.appendAscii( "acc_socket.cxx:SocketAcceptor::init - error - invalid host " );
347 0 : message.append( m_sSocketName );
348 : throw ConnectionSetupException(
349 0 : message.makeStringAndClear(), Reference< XInterface > () );
350 : }
351 0 : m_socket.setOption( osl_Socket_OptionReuseAddr, 1);
352 :
353 0 : if(! m_socket.bind(m_addr) )
354 : {
355 0 : OUStringBuffer message( 128 );
356 0 : message.appendAscii( "acc_socket.cxx:SocketAcceptor::init - error - couldn't bind on " );
357 0 : message.append( m_sSocketName ).appendAscii( ":" ).append((sal_Int32)m_nPort);
358 : throw ConnectionSetupException(
359 : message.makeStringAndClear(),
360 0 : Reference<XInterface>());
361 : }
362 :
363 0 : if(! m_socket.listen() )
364 : {
365 0 : OUStringBuffer message( 128 );
366 0 : message.appendAscii( "acc_socket.cxx:SocketAcceptor::init - error - can't listen on " );
367 0 : message.append( m_sSocketName ).appendAscii( ":" ).append( (sal_Int32) m_nPort);
368 0 : throw ConnectionSetupException( message.makeStringAndClear(),Reference<XInterface>() );
369 : }
370 0 : }
371 :
372 0 : Reference< XConnection > SocketAcceptor::accept( )
373 : {
374 0 : SocketConnection *pConn = new SocketConnection( m_sConnectionDescription );
375 :
376 0 : if( m_socket.acceptConnection( pConn->m_socket )!= osl_Socket_Ok )
377 : {
378 : // stopAccepting was called
379 0 : delete pConn;
380 0 : return Reference < XConnection > ();
381 : }
382 0 : if( m_bClosed )
383 : {
384 0 : delete pConn;
385 0 : return Reference < XConnection > ();
386 : }
387 :
388 0 : pConn->completeConnectionString();
389 0 : if( m_bTcpNoDelay )
390 : {
391 0 : sal_Int32 nTcpNoDelay = sal_True;
392 : pConn->m_socket.setOption( osl_Socket_OptionTcpNoDelay , &nTcpNoDelay,
393 0 : sizeof( nTcpNoDelay ) , osl_Socket_LevelTcp );
394 : }
395 :
396 0 : return Reference < XConnection > ( (XConnection * ) pConn );
397 : }
398 :
399 0 : void SocketAcceptor::stopAccepting()
400 : {
401 0 : m_bClosed = sal_True;
402 0 : m_socket.close();
403 0 : }
404 : }
405 :
406 :
407 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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