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 #include <sys/param.h>
37
38 #include <rtl/strbuf.hxx>
39 #include <rtl/ustrbuf.hxx>
40 #include <osl/diagnose.h>
41 #include <osl/mutex.hxx>
42
43 #include <com/sun/star/uno/genfunc.hxx>
44 #include "com/sun/star/uno/RuntimeException.hpp"
45 #include <typelib/typedescription.hxx>
46 #include <uno/any2.h>
47
48 #include "share.hxx"
49
50
51 using namespace ::std;
52 using namespace ::osl;
53 using namespace ::rtl;
54 using namespace ::com::sun::star::uno;
55 using namespace ::__cxxabiv1;
56
57
58 namespace CPPU_CURRENT_NAMESPACE
59 {
60
dummy_can_throw_anything(char const *)61 void dummy_can_throw_anything( char const * )
62 {
63 }
64
65 //==================================================================================================
toUNOname(char const * p)66 static OUString toUNOname( char const * p ) SAL_THROW( () )
67 {
68 #if OSL_DEBUG_LEVEL > 1
69 char const * start = p;
70 #endif
71
72 // example: N3com3sun4star4lang24IllegalArgumentExceptionE
73
74 OUStringBuffer buf( 64 );
75 OSL_ASSERT( 'N' == *p );
76 ++p; // skip N
77
78 while ('E' != *p)
79 {
80 // read chars count
81 long n = (*p++ - '0');
82 while ('0' <= *p && '9' >= *p)
83 {
84 n *= 10;
85 n += (*p++ - '0');
86 }
87 buf.appendAscii( p, n );
88 p += n;
89 if ('E' != *p)
90 buf.append( (sal_Unicode)'.' );
91 }
92
93 #if OSL_DEBUG_LEVEL > 1
94 OUString ret( buf.makeStringAndClear() );
95 OString c_ret( OUStringToOString( ret, RTL_TEXTENCODING_ASCII_US ) );
96 fprintf( stderr, "> toUNOname(): %s => %s\n", start, c_ret.getStr() );
97 return ret;
98 #else
99 return buf.makeStringAndClear();
100 #endif
101 }
102
103 //==================================================================================================
104 class RTTI
105 {
106 typedef hash_map< OUString, type_info *, OUStringHash > t_rtti_map;
107
108 Mutex m_mutex;
109 t_rtti_map m_rttis;
110 t_rtti_map m_generatedRttis;
111
112 void * m_hApp;
113
114 public:
115 RTTI() SAL_THROW( () );
116 ~RTTI() SAL_THROW( () );
117
118 type_info * getRTTI( typelib_CompoundTypeDescription * ) SAL_THROW( () );
119 };
120 //__________________________________________________________________________________________________
RTTI()121 RTTI::RTTI() SAL_THROW( () )
122 #if __FreeBSD_version < 602103
123 : m_hApp( dlopen( 0, RTLD_NOW | RTLD_GLOBAL ) )
124 #else
125 : m_hApp( dlopen( 0, RTLD_LAZY ) )
126 #endif
127 {
128 }
129 //__________________________________________________________________________________________________
~RTTI()130 RTTI::~RTTI() SAL_THROW( () )
131 {
132 dlclose( m_hApp );
133 }
134
135 //__________________________________________________________________________________________________
getRTTI(typelib_CompoundTypeDescription * pTypeDescr)136 type_info * RTTI::getRTTI( typelib_CompoundTypeDescription *pTypeDescr ) SAL_THROW( () )
137 {
138 type_info * rtti;
139
140 OUString const & unoName = *(OUString const *)&pTypeDescr->aBase.pTypeName;
141
142 MutexGuard guard( m_mutex );
143 t_rtti_map::const_iterator iRttiFind( m_rttis.find( unoName ) );
144 if (iRttiFind == m_rttis.end())
145 {
146 // RTTI symbol
147 OStringBuffer buf( 64 );
148 buf.append( RTL_CONSTASCII_STRINGPARAM("_ZTIN") );
149 sal_Int32 index = 0;
150 do
151 {
152 OUString token( unoName.getToken( 0, '.', index ) );
153 buf.append( token.getLength() );
154 OString c_token( OUStringToOString( token, RTL_TEXTENCODING_ASCII_US ) );
155 buf.append( c_token );
156 }
157 while (index >= 0);
158 buf.append( 'E' );
159
160 OString symName( buf.makeStringAndClear() );
161 #if __FreeBSD_version < 602103 /* #i22253# */
162 rtti = (type_info *)dlsym( RTLD_DEFAULT, symName.getStr() );
163 #else
164 rtti = (type_info *)dlsym( m_hApp, symName.getStr() );
165 #endif
166
167 if (rtti)
168 {
169 pair< t_rtti_map::iterator, bool > insertion(
170 m_rttis.insert( t_rtti_map::value_type( unoName, rtti ) ) );
171 OSL_ENSURE( insertion.second, "### inserting new rtti failed?!" );
172 }
173 else
174 {
175 // try to lookup the symbol in the generated rtti map
176 t_rtti_map::const_iterator iFind( m_generatedRttis.find( unoName ) );
177 if (iFind == m_generatedRttis.end())
178 {
179 // we must generate it !
180 // symbol and rtti-name is nearly identical,
181 // the symbol is prefixed with _ZTI
182 char const * rttiName = symName.getStr() +4;
183 #if OSL_DEBUG_LEVEL > 1
184 fprintf( stderr,"generated rtti for %s\n", rttiName );
185 #ifndef __GLIBCXX__ /* #i124421# */
186 const OString aCUnoName = OUStringToOString( unoName, RTL_TEXTENCODING_UTF8);
187 OSL_TRACE( "TypeInfo for \"%s\" not found and cannot be generated.\n", aCUnoName.getStr());
188 #endif /* __GLIBCXX__ */
189 #endif
190 #ifdef __GLIBCXX__ /* #i124421# */
191 if (pTypeDescr->pBaseTypeDescription)
192 {
193 // ensure availability of base
194 type_info * base_rtti = getRTTI(
195 (typelib_CompoundTypeDescription *)pTypeDescr->pBaseTypeDescription );
196 rtti = new __si_class_type_info(
197 strdup( rttiName ), (__class_type_info *)base_rtti );
198 }
199 else
200 {
201 // this class has no base class
202 rtti = new __class_type_info( strdup( rttiName ) );
203 }
204 #else /* __GLIBCXX__ */
205 rtti = NULL;
206 #endif /* __GLIBCXX__ */
207
208 pair< t_rtti_map::iterator, bool > insertion(
209 m_generatedRttis.insert( t_rtti_map::value_type( unoName, rtti ) ) );
210 OSL_ENSURE( insertion.second, "### inserting new generated rtti failed?!" );
211 }
212 else // taking already generated rtti
213 {
214 rtti = iFind->second;
215 }
216 }
217 }
218 else
219 {
220 rtti = iRttiFind->second;
221 }
222
223 return rtti;
224 }
225
226 //--------------------------------------------------------------------------------------------------
deleteException(void * pExc)227 static void deleteException( void * pExc )
228 {
229 __cxa_exception const * header = ((__cxa_exception const *)pExc - 1);
230 typelib_TypeDescription * pTD = 0;
231 OUString unoName( toUNOname( header->exceptionType->name() ) );
232 ::typelib_typedescription_getByName( &pTD, unoName.pData );
233 OSL_ENSURE( pTD, "### unknown exception type! leaving out destruction => leaking!!!" );
234 if (pTD)
235 {
236 ::uno_destructData( pExc, pTD, cpp_release );
237 ::typelib_typedescription_release( pTD );
238 }
239 }
240
241 //==================================================================================================
raiseException(uno_Any * pUnoExc,uno_Mapping * pUno2Cpp)242 void raiseException( uno_Any * pUnoExc, uno_Mapping * pUno2Cpp )
243 {
244 #if OSL_DEBUG_LEVEL > 1
245 OString cstr(
246 OUStringToOString(
247 *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
248 RTL_TEXTENCODING_ASCII_US ) );
249 fprintf( stderr, "> uno exception occured: %s\n", cstr.getStr() );
250 #endif
251 void * pCppExc;
252 type_info * rtti;
253
254 {
255 // construct cpp exception object
256 typelib_TypeDescription * pTypeDescr = 0;
257 TYPELIB_DANGER_GET( &pTypeDescr, pUnoExc->pType );
258 OSL_ASSERT( pTypeDescr );
259 if (! pTypeDescr)
260 {
261 throw RuntimeException(
262 OUString( RTL_CONSTASCII_USTRINGPARAM("cannot get typedescription for type ") ) +
263 *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
264 Reference< XInterface >() );
265 }
266
267 pCppExc = __cxa_allocate_exception( pTypeDescr->nSize );
268 ::uno_copyAndConvertData( pCppExc, pUnoExc->pData, pTypeDescr, pUno2Cpp );
269
270 // destruct uno exception
271 ::uno_any_destruct( pUnoExc, 0 );
272 // avoiding locked counts
273 static RTTI * s_rtti = 0;
274 if (! s_rtti)
275 {
276 MutexGuard guard( Mutex::getGlobalMutex() );
277 if (! s_rtti)
278 {
279 #ifdef LEAK_STATIC_DATA
280 s_rtti = new RTTI();
281 #else
282 static RTTI rtti_data;
283 s_rtti = &rtti_data;
284 #endif
285 }
286 }
287 rtti = (type_info *)s_rtti->getRTTI( (typelib_CompoundTypeDescription *) pTypeDescr );
288 TYPELIB_DANGER_RELEASE( pTypeDescr );
289 OSL_ENSURE( rtti, "### no rtti for throwing exception!" );
290 if (! rtti)
291 {
292 throw RuntimeException(
293 OUString( RTL_CONSTASCII_USTRINGPARAM("no rtti for type ") ) +
294 *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
295 Reference< XInterface >() );
296 }
297 }
298
299 __cxa_throw( pCppExc, rtti, deleteException );
300 }
301
302 //==================================================================================================
fillUnoException(__cxa_exception * header,uno_Any * pUnoExc,uno_Mapping * pCpp2Uno)303 void fillUnoException( __cxa_exception * header, uno_Any * pUnoExc, uno_Mapping * pCpp2Uno )
304 {
305 if (! header)
306 {
307 RuntimeException aRE(
308 OUString( RTL_CONSTASCII_USTRINGPARAM("no exception header!") ),
309 Reference< XInterface >() );
310 Type const & rType = ::getCppuType( &aRE );
311 uno_type_any_constructAndConvert( pUnoExc, &aRE, rType.getTypeLibType(), pCpp2Uno );
312 #if OSL_DEBUG_LEVEL > 0
313 OString cstr( OUStringToOString( aRE.Message, RTL_TEXTENCODING_ASCII_US ) );
314 OSL_ENSURE( 0, cstr.getStr() );
315 #endif
316 return;
317 }
318
319 typelib_TypeDescription * pExcTypeDescr = 0;
320 OUString unoName( toUNOname( header->exceptionType->name() ) );
321 #if OSL_DEBUG_LEVEL > 1
322 OString cstr_unoName( OUStringToOString( unoName, RTL_TEXTENCODING_ASCII_US ) );
323 fprintf( stderr, "> c++ exception occured: %s\n", cstr_unoName.getStr() );
324 #endif
325 typelib_typedescription_getByName( &pExcTypeDescr, unoName.pData );
326 if (0 == pExcTypeDescr)
327 {
328 RuntimeException aRE(
329 OUString( RTL_CONSTASCII_USTRINGPARAM("exception type not found: ") ) + unoName,
330 Reference< XInterface >() );
331 Type const & rType = ::getCppuType( &aRE );
332 uno_type_any_constructAndConvert( pUnoExc, &aRE, rType.getTypeLibType(), pCpp2Uno );
333 #if OSL_DEBUG_LEVEL > 0
334 OString cstr( OUStringToOString( aRE.Message, RTL_TEXTENCODING_ASCII_US ) );
335 OSL_ENSURE( 0, cstr.getStr() );
336 #endif
337 }
338 else
339 {
340 // construct uno exception any
341 uno_any_constructAndConvert( pUnoExc, header->adjustedPtr, pExcTypeDescr, pCpp2Uno );
342 typelib_typedescription_release( pExcTypeDescr );
343 }
344 }
345
346 }
347
348