1 /**************************************************************
2 *
3 * Licensed to the Apache Software Foundation (ASF) under one
4 * or more contributor license agreements. See the NOTICE file
5 * distributed with this work for additional information
6 * regarding copyright ownership. The ASF licenses this file
7 * to you under the Apache License, Version 2.0 (the
8 * "License"); you may not use this file except in compliance
9 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing,
14 * software distributed under the License is distributed on an
15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16 * KIND, either express or implied. See the License for the
17 * specific language governing permissions and limitations
18 * under the License.
19 *
20 *************************************************************/
21
22
23
24 // MARKER(update_precomp.py): autogen include statement, do not remove
25 #include "precompiled_bridges.hxx"
26
27 #include <cstddef>
28 #include <exception>
29 #include <typeinfo>
30
31 #include <stdio.h>
32 #include <string.h>
33 #include <dlfcn.h>
34 #include <cxxabi.h>
35 #include <hash_map>
36
37 #include <sys/param.h>
38
39 #include <rtl/strbuf.hxx>
40 #include <rtl/ustrbuf.hxx>
41 #include <osl/diagnose.h>
42 #include <osl/mutex.hxx>
43
44 #include <com/sun/star/uno/genfunc.hxx>
45 #include "com/sun/star/uno/RuntimeException.hpp"
46 #include <typelib/typedescription.hxx>
47 #include <uno/any2.h>
48
49 #include "share.hxx"
50
51
52 using namespace ::std;
53 using namespace ::osl;
54 using namespace ::rtl;
55 using namespace ::com::sun::star::uno;
56 using namespace ::__cxxabiv1;
57
58
59 namespace CPPU_CURRENT_NAMESPACE
60 {
61
dummy_can_throw_anything(char const *)62 void dummy_can_throw_anything( char const * )
63 {
64 }
65
66 //==================================================================================================
toUNOname(char const * p)67 static OUString toUNOname( char const * p ) SAL_THROW( () )
68 {
69 #if OSL_DEBUG_LEVEL > 1
70 char const * start = p;
71 #endif
72
73 // example: N3com3sun4star4lang24IllegalArgumentExceptionE
74
75 OUStringBuffer buf( 64 );
76 OSL_ASSERT( 'N' == *p );
77 ++p; // skip N
78
79 while ('E' != *p)
80 {
81 // read chars count
82 long n = (*p++ - '0');
83 while ('0' <= *p && '9' >= *p)
84 {
85 n *= 10;
86 n += (*p++ - '0');
87 }
88 buf.appendAscii( p, n );
89 p += n;
90 if ('E' != *p)
91 buf.append( (sal_Unicode)'.' );
92 }
93
94 #if OSL_DEBUG_LEVEL > 1
95 OUString ret( buf.makeStringAndClear() );
96 OString c_ret( OUStringToOString( ret, RTL_TEXTENCODING_ASCII_US ) );
97 fprintf( stderr, "> toUNOname(): %s => %s\n", start, c_ret.getStr() );
98 return ret;
99 #else
100 return buf.makeStringAndClear();
101 #endif
102 }
103
104 //==================================================================================================
105 class RTTI
106 {
107 typedef hash_map< OUString, type_info *, OUStringHash > t_rtti_map;
108
109 Mutex m_mutex;
110 t_rtti_map m_rttis;
111 t_rtti_map m_generatedRttis;
112
113 void * m_hApp;
114
115 public:
116 RTTI() SAL_THROW( () );
117 ~RTTI() SAL_THROW( () );
118
119 type_info * getRTTI( typelib_CompoundTypeDescription * ) SAL_THROW( () );
120 };
121 //__________________________________________________________________________________________________
RTTI()122 RTTI::RTTI() SAL_THROW( () )
123 : m_hApp( dlopen( 0, RTLD_LAZY ) )
124 {
125 }
126 //__________________________________________________________________________________________________
~RTTI()127 RTTI::~RTTI() SAL_THROW( () )
128 {
129 dlclose( m_hApp );
130 }
131
132 //__________________________________________________________________________________________________
getRTTI(typelib_CompoundTypeDescription * pTypeDescr)133 type_info * RTTI::getRTTI( typelib_CompoundTypeDescription *pTypeDescr ) SAL_THROW( () )
134 {
135 type_info * rtti;
136
137 OUString const & unoName = *(OUString const *)&pTypeDescr->aBase.pTypeName;
138
139 MutexGuard guard( m_mutex );
140 t_rtti_map::const_iterator iFind( m_rttis.find( unoName ) );
141 if (iFind == m_rttis.end())
142 {
143 // RTTI symbol
144 OStringBuffer buf( 64 );
145 buf.append( RTL_CONSTASCII_STRINGPARAM("_ZTIN") );
146 sal_Int32 index = 0;
147 do
148 {
149 OUString token( unoName.getToken( 0, '.', index ) );
150 buf.append( token.getLength() );
151 OString c_token( OUStringToOString( token, RTL_TEXTENCODING_ASCII_US ) );
152 buf.append( c_token );
153 }
154 while (index >= 0);
155 buf.append( 'E' );
156
157 OString symName( buf.makeStringAndClear() );
158 rtti = static_cast<type_info *>(dlsym( m_hApp, symName.getStr() ));
159
160 if (rtti)
161 {
162 pair< t_rtti_map::iterator, bool > insertion(
163 m_rttis.insert( t_rtti_map::value_type( unoName, rtti ) ) );
164 OSL_ENSURE( insertion.second, "### inserting new rtti failed?!" );
165 }
166 else
167 {
168 // try to lookup the symbol in the generated rtti map
169 t_rtti_map::const_iterator iFind2( m_generatedRttis.find( unoName ) );
170 if (iFind2 == m_generatedRttis.end())
171 {
172 // we must generate it !
173 // symbol and rtti-name is nearly identical,
174 // the symbol is prefixed with _ZTI
175 char const * rttiName = symName.getStr() +4;
176 #if OSL_DEBUG_LEVEL > 1
177 fprintf( stderr,"generated rtti for %s\n", rttiName );
178 #ifndef __GLIBCXX__ /* #i124421# */
179 const OString aCUnoName = OUStringToOString( unoName, RTL_TEXTENCODING_UTF8);
180 OSL_TRACE( "TypeInfo for \"%s\" not found and cannot be generated.\n", aCUnoName.getStr());
181 #endif /* __GLIBCXX__ */
182 #endif
183 #ifdef __GLIBCXX__ /* #i124421# */
184 if (pTypeDescr->pBaseTypeDescription)
185 {
186 // ensure availability of base
187 type_info * base_rtti = getRTTI(
188 (typelib_CompoundTypeDescription *)pTypeDescr->pBaseTypeDescription );
189 rtti = new __si_class_type_info(
190 strdup( rttiName ), static_cast<__class_type_info *>(base_rtti) );
191 }
192 else
193 {
194 // this class has no base class
195 rtti = new __class_type_info( strdup( rttiName ) );
196 }
197 #else /* __GLIBCXX__ */
198 rtti = NULL;
199 #endif /* __GLIBCXX__ */
200
201 pair< t_rtti_map::iterator, bool > insertion(
202 m_generatedRttis.insert( t_rtti_map::value_type( unoName, rtti ) ) );
203 OSL_ENSURE( insertion.second, "### inserting new generated rtti failed?!" );
204 }
205 else // taking already generated rtti
206 {
207 rtti = iFind2->second;
208 }
209 }
210 }
211 else
212 {
213 rtti = iFind->second;
214 }
215
216 return rtti;
217 }
218
219 //--------------------------------------------------------------------------------------------------
deleteException(void * pExc)220 static void deleteException( void * pExc )
221 {
222 __cxa_exception const * header = ((__cxa_exception const *)pExc - 1);
223 typelib_TypeDescription * pTD = 0;
224 OUString unoName( toUNOname( header->exceptionType->name() ) );
225 ::typelib_typedescription_getByName( &pTD, unoName.pData );
226 OSL_ENSURE( pTD, "### unknown exception type! leaving out destruction => leaking!!!" );
227 if (pTD)
228 {
229 ::uno_destructData( pExc, pTD, cpp_release );
230 ::typelib_typedescription_release( pTD );
231 }
232 }
233
234 //==================================================================================================
raiseException(uno_Any * pUnoExc,uno_Mapping * pUno2Cpp)235 void raiseException( uno_Any * pUnoExc, uno_Mapping * pUno2Cpp )
236 {
237 #if OSL_DEBUG_LEVEL > 1
238 OString cstr(
239 OUStringToOString(
240 *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
241 RTL_TEXTENCODING_ASCII_US ) );
242 fprintf( stderr, "> uno exception occurred: %s\n", cstr.getStr() );
243 #endif
244 void * pCppExc;
245 type_info * rtti;
246
247 {
248 // construct cpp exception object
249 typelib_TypeDescription * pTypeDescr = 0;
250 TYPELIB_DANGER_GET( &pTypeDescr, pUnoExc->pType );
251 OSL_ASSERT( pTypeDescr );
252 if (! pTypeDescr)
253 {
254 throw RuntimeException(
255 OUString( RTL_CONSTASCII_USTRINGPARAM("cannot get typedescription for type ") ) +
256 *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
257 Reference< XInterface >() );
258 }
259
260 pCppExc = __cxa_allocate_exception( pTypeDescr->nSize );
261 ::uno_copyAndConvertData( pCppExc, pUnoExc->pData, pTypeDescr, pUno2Cpp );
262
263 // destruct uno exception
264 ::uno_any_destruct( pUnoExc, 0 );
265 // avoiding locked counts
266 static RTTI * s_rtti = 0;
267 if (! s_rtti)
268 {
269 MutexGuard guard( Mutex::getGlobalMutex() );
270 if (! s_rtti)
271 {
272 #ifdef LEAK_STATIC_DATA
273 s_rtti = new RTTI();
274 #else
275 static RTTI rtti_data;
276 s_rtti = &rtti_data;
277 #endif
278 }
279 }
280 rtti = (type_info *)s_rtti->getRTTI( (typelib_CompoundTypeDescription *) pTypeDescr );
281 TYPELIB_DANGER_RELEASE( pTypeDescr );
282 OSL_ENSURE( rtti, "### no rtti for throwing exception!" );
283 if (! rtti)
284 {
285 throw RuntimeException(
286 OUString( RTL_CONSTASCII_USTRINGPARAM("no rtti for type ") ) +
287 *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
288 Reference< XInterface >() );
289 }
290 }
291
292 __cxa_throw( pCppExc, rtti, deleteException );
293 }
294
295 //==================================================================================================
fillUnoException(__cxa_exception * header,uno_Any * pUnoExc,uno_Mapping * pCpp2Uno)296 void fillUnoException( __cxa_exception * header, uno_Any * pUnoExc, uno_Mapping * pCpp2Uno )
297 {
298 if (! header)
299 {
300 RuntimeException aRE(
301 OUString( RTL_CONSTASCII_USTRINGPARAM("no exception header!") ),
302 Reference< XInterface >() );
303 Type const & rType = ::getCppuType( &aRE );
304 uno_type_any_constructAndConvert( pUnoExc, &aRE, rType.getTypeLibType(), pCpp2Uno );
305 #if OSL_DEBUG_LEVEL > 0
306 OString cstr( OUStringToOString( aRE.Message, RTL_TEXTENCODING_ASCII_US ) );
307 OSL_ENSURE( 0, cstr.getStr() );
308 #endif
309 return;
310 }
311
312 typelib_TypeDescription * pExcTypeDescr = 0;
313 OUString unoName( toUNOname( header->exceptionType->name() ) );
314 #if OSL_DEBUG_LEVEL > 1
315 OString cstr_unoName( OUStringToOString( unoName, RTL_TEXTENCODING_ASCII_US ) );
316 fprintf( stderr, "> c++ exception occurred: %s\n", cstr_unoName.getStr() );
317 #endif
318 typelib_typedescription_getByName( &pExcTypeDescr, unoName.pData );
319 if (0 == pExcTypeDescr)
320 {
321 RuntimeException aRE(
322 OUString( RTL_CONSTASCII_USTRINGPARAM("exception type not found: ") ) + unoName,
323 Reference< XInterface >() );
324 Type const & rType = ::getCppuType( &aRE );
325 uno_type_any_constructAndConvert( pUnoExc, &aRE, rType.getTypeLibType(), pCpp2Uno );
326 #if OSL_DEBUG_LEVEL > 0
327 OString cstr( OUStringToOString( aRE.Message, RTL_TEXTENCODING_ASCII_US ) );
328 OSL_ENSURE( 0, cstr.getStr() );
329 #endif
330 }
331 else
332 {
333 // construct uno exception any
334 uno_any_constructAndConvert( pUnoExc, header->adjustedPtr, pExcTypeDescr, pCpp2Uno );
335 typelib_typedescription_release( pExcTypeDescr );
336 }
337 }
338
339 }
340
341