1 /*************************************************************************
2  *
3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4  *
5  * Copyright 2000, 2010 Oracle and/or its affiliates.
6  *
7  * OpenOffice.org - a multi-platform office productivity suite
8  *
9  * This file is part of OpenOffice.org.
10  *
11  * OpenOffice.org is free software: you can redistribute it and/or modify
12  * it under the terms of the GNU Lesser General Public License version 3
13  * only, as published by the Free Software Foundation.
14  *
15  * OpenOffice.org is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18  * GNU Lesser General Public License version 3 for more details
19  * (a copy is included in the LICENSE file that accompanied this code).
20  *
21  * You should have received a copy of the GNU Lesser General Public License
22  * version 3 along with OpenOffice.org.  If not, see
23  * <http://www.openoffice.org/license.html>
24  * for a copy of the LGPLv3 License.
25  *
26  ************************************************************************/
27 
28 // MARKER(update_precomp.py): autogen include statement, do not remove
29 #include "precompiled_bridges.hxx"
30 
31 #include <stdio.h>
32 #include <dlfcn.h>
33 #include <cxxabi.h>
34 #include <hash_map>
35 #include <sys/param.h>
36 
37 #include <rtl/strbuf.hxx>
38 #include <rtl/ustrbuf.hxx>
39 #include <osl/diagnose.h>
40 #include <osl/mutex.hxx>
41 
42 #include <com/sun/star/uno/genfunc.hxx>
43 #include "com/sun/star/uno/RuntimeException.hpp"
44 #include <typelib/typedescription.hxx>
45 #include <uno/any2.h>
46 
47 #include "share.hxx"
48 
49 
50 using namespace ::std;
51 using namespace ::osl;
52 using namespace ::rtl;
53 using namespace ::com::sun::star::uno;
54 using namespace ::__cxxabiv1;
55 
56 
57 namespace CPPU_CURRENT_NAMESPACE
58 {
59 
60 void dummy_can_throw_anything( char const * )
61 {
62 }
63 
64 //==================================================================================================
65 static OUString toUNOname( char const * p ) SAL_THROW( () )
66 {
67 #if OSL_DEBUG_LEVEL > 1
68     char const * start = p;
69 #endif
70 
71     // example: N3com3sun4star4lang24IllegalArgumentExceptionE
72 
73 	OUStringBuffer buf( 64 );
74     OSL_ASSERT( 'N' == *p );
75     ++p; // skip N
76 
77     while ('E' != *p)
78     {
79         // read chars count
80         long n = (*p++ - '0');
81         while ('0' <= *p && '9' >= *p)
82         {
83             n *= 10;
84             n += (*p++ - '0');
85         }
86         buf.appendAscii( p, n );
87         p += n;
88         if ('E' != *p)
89             buf.append( (sal_Unicode)'.' );
90     }
91 
92 #if OSL_DEBUG_LEVEL > 1
93     OUString ret( buf.makeStringAndClear() );
94     OString c_ret( OUStringToOString( ret, RTL_TEXTENCODING_ASCII_US ) );
95     fprintf( stderr, "> toUNOname(): %s => %s\n", start, c_ret.getStr() );
96     return ret;
97 #else
98     return buf.makeStringAndClear();
99 #endif
100 }
101 
102 //==================================================================================================
103 class RTTI
104 {
105     typedef hash_map< OUString, type_info *, OUStringHash > t_rtti_map;
106 
107     Mutex m_mutex;
108 	t_rtti_map m_rttis;
109     t_rtti_map m_generatedRttis;
110 
111     void * m_hApp;
112 
113 public:
114     RTTI() SAL_THROW( () );
115     ~RTTI() SAL_THROW( () );
116 
117     type_info * getRTTI( typelib_CompoundTypeDescription * ) SAL_THROW( () );
118 };
119 //__________________________________________________________________________________________________
120 RTTI::RTTI() SAL_THROW( () )
121 #if __FreeBSD_version < 602103
122     : m_hApp( dlopen( 0, RTLD_NOW | RTLD_GLOBAL ) )
123 #else
124     : m_hApp( dlopen( 0, RTLD_LAZY ) )
125 #endif
126 {
127 }
128 //__________________________________________________________________________________________________
129 RTTI::~RTTI() SAL_THROW( () )
130 {
131     dlclose( m_hApp );
132 }
133 
134 //__________________________________________________________________________________________________
135 type_info * RTTI::getRTTI( typelib_CompoundTypeDescription *pTypeDescr ) SAL_THROW( () )
136 {
137     type_info * rtti;
138 
139     OUString const & unoName = *(OUString const *)&pTypeDescr->aBase.pTypeName;
140 
141     MutexGuard guard( m_mutex );
142     t_rtti_map::const_iterator iFind( m_rttis.find( unoName ) );
143     if (iFind == m_rttis.end())
144     {
145         // RTTI symbol
146         OStringBuffer buf( 64 );
147         buf.append( RTL_CONSTASCII_STRINGPARAM("_ZTIN") );
148         sal_Int32 index = 0;
149         do
150         {
151             OUString token( unoName.getToken( 0, '.', index ) );
152             buf.append( token.getLength() );
153             OString c_token( OUStringToOString( token, RTL_TEXTENCODING_ASCII_US ) );
154             buf.append( c_token );
155         }
156         while (index >= 0);
157         buf.append( 'E' );
158 
159         OString symName( buf.makeStringAndClear() );
160 #if __FreeBSD_version < 602103  /* #i22253# */
161         rtti = (type_info *)dlsym( RTLD_DEFAULT, symName.getStr() );
162 #else
163         rtti = (type_info *)dlsym( m_hApp, symName.getStr() );
164 #endif
165 
166         if (rtti)
167         {
168             pair< t_rtti_map::iterator, bool > insertion(
169                 m_rttis.insert( t_rtti_map::value_type( unoName, rtti ) ) );
170             OSL_ENSURE( insertion.second, "### inserting new rtti failed?!" );
171         }
172         else
173         {
174             // try to lookup the symbol in the generated rtti map
175             t_rtti_map::const_iterator iFind( m_generatedRttis.find( unoName ) );
176             if (iFind == m_generatedRttis.end())
177             {
178                 // we must generate it !
179                 // symbol and rtti-name is nearly identical,
180                 // the symbol is prefixed with _ZTI
181                 char const * rttiName = symName.getStr() +4;
182 #if OSL_DEBUG_LEVEL > 1
183                 fprintf( stderr,"generated rtti for %s\n", rttiName );
184 #endif
185                 if (pTypeDescr->pBaseTypeDescription)
186                 {
187                     // ensure availability of base
188                     type_info * base_rtti = getRTTI(
189                         (typelib_CompoundTypeDescription *)pTypeDescr->pBaseTypeDescription );
190                     rtti = new __si_class_type_info(
191                         strdup( rttiName ), (__class_type_info *)base_rtti );
192                 }
193                 else
194                 {
195                     // this class has no base class
196                     rtti = new __class_type_info( strdup( rttiName ) );
197                 }
198 
199                 pair< t_rtti_map::iterator, bool > insertion(
200                     m_generatedRttis.insert( t_rtti_map::value_type( unoName, rtti ) ) );
201                 OSL_ENSURE( insertion.second, "### inserting new generated rtti failed?!" );
202             }
203             else // taking already generated rtti
204             {
205                 rtti = iFind->second;
206             }
207         }
208     }
209     else
210     {
211         rtti = iFind->second;
212     }
213 
214     return rtti;
215 }
216 
217 //--------------------------------------------------------------------------------------------------
218 static void deleteException( void * pExc )
219 {
220     __cxa_exception const * header = ((__cxa_exception const *)pExc - 1);
221     typelib_TypeDescription * pTD = 0;
222     OUString unoName( toUNOname( header->exceptionType->name() ) );
223     ::typelib_typedescription_getByName( &pTD, unoName.pData );
224     OSL_ENSURE( pTD, "### unknown exception type! leaving out destruction => leaking!!!" );
225     if (pTD)
226     {
227 		::uno_destructData( pExc, pTD, cpp_release );
228 		::typelib_typedescription_release( pTD );
229 	}
230 }
231 
232 //==================================================================================================
233 void raiseException( uno_Any * pUnoExc, uno_Mapping * pUno2Cpp )
234 {
235 #if OSL_DEBUG_LEVEL > 1
236     OString cstr(
237         OUStringToOString(
238             *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
239             RTL_TEXTENCODING_ASCII_US ) );
240     fprintf( stderr, "> uno exception occured: %s\n", cstr.getStr() );
241 #endif
242     void * pCppExc;
243     type_info * rtti;
244 
245     {
246     // construct cpp exception object
247 	typelib_TypeDescription * pTypeDescr = 0;
248 	TYPELIB_DANGER_GET( &pTypeDescr, pUnoExc->pType );
249     OSL_ASSERT( pTypeDescr );
250     if (! pTypeDescr)
251     {
252         throw RuntimeException(
253             OUString( RTL_CONSTASCII_USTRINGPARAM("cannot get typedescription for type ") ) +
254             *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
255             Reference< XInterface >() );
256     }
257 
258 	pCppExc = __cxa_allocate_exception( pTypeDescr->nSize );
259 	::uno_copyAndConvertData( pCppExc, pUnoExc->pData, pTypeDescr, pUno2Cpp );
260 
261 	// destruct uno exception
262 	::uno_any_destruct( pUnoExc, 0 );
263     // avoiding locked counts
264     static RTTI * s_rtti = 0;
265     if (! s_rtti)
266     {
267         MutexGuard guard( Mutex::getGlobalMutex() );
268         if (! s_rtti)
269         {
270 #ifdef LEAK_STATIC_DATA
271             s_rtti = new RTTI();
272 #else
273             static RTTI rtti_data;
274             s_rtti = &rtti_data;
275 #endif
276         }
277     }
278 	rtti = (type_info *)s_rtti->getRTTI( (typelib_CompoundTypeDescription *) pTypeDescr );
279     TYPELIB_DANGER_RELEASE( pTypeDescr );
280     OSL_ENSURE( rtti, "### no rtti for throwing exception!" );
281     if (! rtti)
282     {
283         throw RuntimeException(
284             OUString( RTL_CONSTASCII_USTRINGPARAM("no rtti for type ") ) +
285             *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
286             Reference< XInterface >() );
287     }
288     }
289 
290 	__cxa_throw( pCppExc, rtti, deleteException );
291 }
292 
293 //==================================================================================================
294 void fillUnoException( __cxa_exception * header, uno_Any * pUnoExc, uno_Mapping * pCpp2Uno )
295 {
296     if (! header)
297     {
298         RuntimeException aRE(
299             OUString( RTL_CONSTASCII_USTRINGPARAM("no exception header!") ),
300             Reference< XInterface >() );
301         Type const & rType = ::getCppuType( &aRE );
302         uno_type_any_constructAndConvert( pUnoExc, &aRE, rType.getTypeLibType(), pCpp2Uno );
303 #if OSL_DEBUG_LEVEL > 0
304         OString cstr( OUStringToOString( aRE.Message, RTL_TEXTENCODING_ASCII_US ) );
305         OSL_ENSURE( 0, cstr.getStr() );
306 #endif
307         return;
308     }
309 
310 	typelib_TypeDescription * pExcTypeDescr = 0;
311     OUString unoName( toUNOname( header->exceptionType->name() ) );
312 #if OSL_DEBUG_LEVEL > 1
313     OString cstr_unoName( OUStringToOString( unoName, RTL_TEXTENCODING_ASCII_US ) );
314     fprintf( stderr, "> c++ exception occured: %s\n", cstr_unoName.getStr() );
315 #endif
316 	typelib_typedescription_getByName( &pExcTypeDescr, unoName.pData );
317     if (0 == pExcTypeDescr)
318     {
319         RuntimeException aRE(
320             OUString( RTL_CONSTASCII_USTRINGPARAM("exception type not found: ") ) + unoName,
321             Reference< XInterface >() );
322         Type const & rType = ::getCppuType( &aRE );
323         uno_type_any_constructAndConvert( pUnoExc, &aRE, rType.getTypeLibType(), pCpp2Uno );
324 #if OSL_DEBUG_LEVEL > 0
325         OString cstr( OUStringToOString( aRE.Message, RTL_TEXTENCODING_ASCII_US ) );
326         OSL_ENSURE( 0, cstr.getStr() );
327 #endif
328     }
329     else
330     {
331         // construct uno exception any
332         uno_any_constructAndConvert( pUnoExc, header->adjustedPtr, pExcTypeDescr, pCpp2Uno );
333         typelib_typedescription_release( pExcTypeDescr );
334     }
335 }
336 
337 }
338 
339