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 62 void dummy_can_throw_anything( char const * ) 63 { 64 } 65 66 //================================================================================================== 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 //__________________________________________________________________________________________________ 122 RTTI::RTTI() SAL_THROW( () ) 123 : m_hApp( dlopen( 0, RTLD_LAZY ) ) 124 { 125 } 126 //__________________________________________________________________________________________________ 127 RTTI::~RTTI() SAL_THROW( () ) 128 { 129 dlclose( m_hApp ); 130 } 131 132 //__________________________________________________________________________________________________ 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 iRttiFind( m_rttis.find( unoName ) ); 141 if (iRttiFind == 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 iFind( m_generatedRttis.find( unoName ) ); 170 if (iFind == 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 = iFind->second; 208 } 209 } 210 } 211 else 212 { 213 rtti = iRttiFind->second; 214 } 215 216 return rtti; 217 } 218 219 //-------------------------------------------------------------------------------------------------- 220 static void deleteException( void * pExc ) 221 { 222 __cxa_exception const * header = ((__cxa_exception const *)pExc - 1); 223 if (header->exceptionDestructor != &deleteException) { 224 // _Unwind_Exception was made __aligned__ which 225 // increased its size by 12 bytes 226 header = reinterpret_cast<__cxa_exception const *>( 227 reinterpret_cast<char const *>( header ) - 12 ); 228 } 229 typelib_TypeDescription * pTD = 0; 230 OUString unoName( toUNOname( header->exceptionType->name() ) ); 231 ::typelib_typedescription_getByName( &pTD, unoName.pData ); 232 OSL_ENSURE( pTD, "### unknown exception type! leaving out destruction => leaking!!!" ); 233 if (pTD) 234 { 235 ::uno_destructData( pExc, pTD, cpp_release ); 236 ::typelib_typedescription_release( pTD ); 237 } 238 } 239 240 //================================================================================================== 241 void raiseException( uno_Any * pUnoExc, uno_Mapping * pUno2Cpp ) 242 { 243 #if OSL_DEBUG_LEVEL > 1 244 OString cstr( 245 OUStringToOString( 246 *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ), 247 RTL_TEXTENCODING_ASCII_US ) ); 248 fprintf( stderr, "> uno exception occurred: %s\n", cstr.getStr() ); 249 #endif 250 void * pCppExc; 251 type_info * rtti; 252 253 { 254 // construct cpp exception object 255 typelib_TypeDescription * pTypeDescr = 0; 256 TYPELIB_DANGER_GET( &pTypeDescr, pUnoExc->pType ); 257 OSL_ASSERT( pTypeDescr ); 258 if (! pTypeDescr) 259 { 260 throw RuntimeException( 261 OUString( RTL_CONSTASCII_USTRINGPARAM("cannot get typedescription for type ") ) + 262 *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ), 263 Reference< XInterface >() ); 264 } 265 266 pCppExc = __cxa_allocate_exception( pTypeDescr->nSize ); 267 ::uno_copyAndConvertData( pCppExc, pUnoExc->pData, pTypeDescr, pUno2Cpp ); 268 269 // destruct uno exception 270 ::uno_any_destruct( pUnoExc, 0 ); 271 // avoiding locked counts 272 static RTTI * s_rtti = 0; 273 if (! s_rtti) 274 { 275 MutexGuard guard( Mutex::getGlobalMutex() ); 276 if (! s_rtti) 277 { 278 #ifdef LEAK_STATIC_DATA 279 s_rtti = new RTTI(); 280 #else 281 static RTTI rtti_data; 282 s_rtti = &rtti_data; 283 #endif 284 } 285 } 286 rtti = (type_info *)s_rtti->getRTTI( (typelib_CompoundTypeDescription *) pTypeDescr ); 287 TYPELIB_DANGER_RELEASE( pTypeDescr ); 288 OSL_ENSURE( rtti, "### no rtti for throwing exception!" ); 289 if (! rtti) 290 { 291 throw RuntimeException( 292 OUString( RTL_CONSTASCII_USTRINGPARAM("no rtti for type ") ) + 293 *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ), 294 Reference< XInterface >() ); 295 } 296 } 297 298 __cxa_throw( pCppExc, rtti, deleteException ); 299 } 300 301 //================================================================================================== 302 void fillUnoException( __cxa_exception * header, uno_Any * pUnoExc, uno_Mapping * pCpp2Uno ) 303 { 304 if (! header) 305 { 306 RuntimeException aRE( 307 OUString( RTL_CONSTASCII_USTRINGPARAM("no exception header!") ), 308 Reference< XInterface >() ); 309 Type const & rType = ::getCppuType( &aRE ); 310 uno_type_any_constructAndConvert( pUnoExc, &aRE, rType.getTypeLibType(), pCpp2Uno ); 311 #if OSL_DEBUG_LEVEL > 0 312 OString cstr( OUStringToOString( aRE.Message, RTL_TEXTENCODING_ASCII_US ) ); 313 OSL_ENSURE( 0, cstr.getStr() ); 314 #endif 315 return; 316 } 317 318 typelib_TypeDescription * pExcTypeDescr = 0; 319 OUString unoName( toUNOname( header->exceptionType->name() ) ); 320 #if OSL_DEBUG_LEVEL > 1 321 OString cstr_unoName( OUStringToOString( unoName, RTL_TEXTENCODING_ASCII_US ) ); 322 fprintf( stderr, "> c++ exception occurred: %s\n", cstr_unoName.getStr() ); 323 #endif 324 typelib_typedescription_getByName( &pExcTypeDescr, unoName.pData ); 325 if (0 == pExcTypeDescr) 326 { 327 RuntimeException aRE( 328 OUString( RTL_CONSTASCII_USTRINGPARAM("exception type not found: ") ) + unoName, 329 Reference< XInterface >() ); 330 Type const & rType = ::getCppuType( &aRE ); 331 uno_type_any_constructAndConvert( pUnoExc, &aRE, rType.getTypeLibType(), pCpp2Uno ); 332 #if OSL_DEBUG_LEVEL > 0 333 OString cstr( OUStringToOString( aRE.Message, RTL_TEXTENCODING_ASCII_US ) ); 334 OSL_ENSURE( 0, cstr.getStr() ); 335 #endif 336 } 337 else 338 { 339 // construct uno exception any 340 uno_any_constructAndConvert( pUnoExc, header->adjustedPtr, pExcTypeDescr, pCpp2Uno ); 341 typelib_typedescription_release( pExcTypeDescr ); 342 } 343 } 344 345 } 346