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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 #include <stdio.h> 28 #include <string.h> 29 #include <dlfcn.h> 30 #include <cxxabi.h> 31 #include <hash_map> 32 33 #include <rtl/strbuf.hxx> 34 #include <rtl/ustrbuf.hxx> 35 #include <osl/diagnose.h> 36 #include <osl/mutex.hxx> 37 38 #include <com/sun/star/uno/genfunc.hxx> 39 #include <typelib/typedescription.hxx> 40 #include <uno/any2.h> 41 42 #include "share.hxx" 43 44 45 using namespace ::std; 46 using namespace ::osl; 47 using namespace ::rtl; 48 using namespace ::com::sun::star::uno; 49 using namespace ::__cxxabiv1; 50 51 52 namespace CPPU_CURRENT_NAMESPACE 53 { 54 55 void dummy_can_throw_anything( char const * ) 56 { 57 } 58 59 //================================================================================================== 60 static OUString toUNOname( char const * p ) SAL_THROW( () ) 61 { 62 #if defined BRIDGES_DEBUG 63 char const * start = p; 64 #endif 65 66 // example: N3com3sun4star4lang24IllegalArgumentExceptionE 67 68 OUStringBuffer buf( 64 ); 69 OSL_ASSERT( 'N' == *p ); 70 ++p; // skip N 71 72 while ('E' != *p) 73 { 74 // read chars count 75 long n = (*p++ - '0'); 76 while ('0' <= *p && '9' >= *p) 77 { 78 n *= 10; 79 n += (*p++ - '0'); 80 } 81 buf.appendAscii( p, n ); 82 p += n; 83 if ('E' != *p) 84 buf.append( (sal_Unicode)'.' ); 85 } 86 87 #if defined BRIDGES_DEBUG 88 OUString ret( buf.makeStringAndClear() ); 89 OString c_ret( OUStringToOString( ret, RTL_TEXTENCODING_ASCII_US ) ); 90 fprintf( stderr, "> toUNOname(): %s => %s\n", start, c_ret.getStr() ); 91 return ret; 92 #else 93 return buf.makeStringAndClear(); 94 #endif 95 } 96 97 //================================================================================================== 98 class RTTI 99 { 100 typedef hash_map< OUString, type_info *, OUStringHash > t_rtti_map; 101 102 Mutex m_mutex; 103 t_rtti_map m_rttis; 104 t_rtti_map m_generatedRttis; 105 106 void * m_hApp; 107 108 public: 109 RTTI() SAL_THROW( () ); 110 ~RTTI() SAL_THROW( () ); 111 112 type_info * getRTTI( typelib_CompoundTypeDescription * ) SAL_THROW( () ); 113 }; 114 //__________________________________________________________________________________________________ 115 RTTI::RTTI() SAL_THROW( () ) 116 : m_hApp( dlopen( 0, RTLD_LAZY ) ) 117 { 118 } 119 //__________________________________________________________________________________________________ 120 RTTI::~RTTI() SAL_THROW( () ) 121 { 122 dlclose( m_hApp ); 123 } 124 125 //__________________________________________________________________________________________________ 126 type_info * RTTI::getRTTI( typelib_CompoundTypeDescription *pTypeDescr ) SAL_THROW( () ) 127 { 128 type_info * rtti; 129 130 OUString const & unoName = *(OUString const *)&pTypeDescr->aBase.pTypeName; 131 132 MutexGuard guard( m_mutex ); 133 t_rtti_map::const_iterator iRttiFind( m_rttis.find( unoName ) ); 134 if (iRttiFind == m_rttis.end()) 135 { 136 // RTTI symbol 137 OStringBuffer buf( 64 ); 138 buf.append( RTL_CONSTASCII_STRINGPARAM("_ZTIN") ); 139 sal_Int32 index = 0; 140 do 141 { 142 OUString token( unoName.getToken( 0, '.', index ) ); 143 buf.append( token.getLength() ); 144 OString c_token( OUStringToOString( token, RTL_TEXTENCODING_ASCII_US ) ); 145 buf.append( c_token ); 146 } 147 while (index >= 0); 148 buf.append( 'E' ); 149 150 OString symName( buf.makeStringAndClear() ); 151 rtti = (type_info *)dlsym( m_hApp, symName.getStr() ); 152 153 if (rtti) 154 { 155 pair< t_rtti_map::iterator, bool > insertion( 156 m_rttis.insert( t_rtti_map::value_type( unoName, rtti ) ) ); 157 OSL_ENSURE( insertion.second, "### inserting new rtti failed?!" ); 158 } 159 else 160 { 161 // try to lookup the symbol in the generated rtti map 162 t_rtti_map::const_iterator iFind( m_generatedRttis.find( unoName ) ); 163 if (iFind == m_generatedRttis.end()) 164 { 165 // we must generate it ! 166 // symbol and rtti-name is nearly identical, 167 // the symbol is prefixed with _ZTI 168 char const * rttiName = symName.getStr() +4; 169 #if defined BRIDGES_DEBUG 170 fprintf( stderr,"generated rtti for %s\n", rttiName ); 171 #endif 172 if (pTypeDescr->pBaseTypeDescription) 173 { 174 // ensure availability of base 175 type_info * base_rtti = getRTTI( 176 (typelib_CompoundTypeDescription *)pTypeDescr->pBaseTypeDescription ); 177 rtti = new __si_class_type_info( 178 strdup( rttiName ), (__class_type_info *)base_rtti ); 179 } 180 else 181 { 182 // this class has no base class 183 rtti = new __class_type_info( strdup( rttiName ) ); 184 } 185 186 pair< t_rtti_map::iterator, bool > insertion( 187 m_generatedRttis.insert( t_rtti_map::value_type( unoName, rtti ) ) ); 188 OSL_ENSURE( insertion.second, "### inserting new generated rtti failed?!" ); 189 } 190 else // taking already generated rtti 191 { 192 rtti = iFind->second; 193 } 194 } 195 } 196 else 197 { 198 rtti = iRttiFind->second; 199 } 200 201 return rtti; 202 } 203 204 //-------------------------------------------------------------------------------------------------- 205 static void deleteException( void * pExc ) 206 { 207 __cxa_exception const * header = ((__cxa_exception const *)pExc - 1); 208 typelib_TypeDescription * pTD = 0; 209 OUString unoName( toUNOname( header->exceptionType->name() ) ); 210 ::typelib_typedescription_getByName( &pTD, unoName.pData ); 211 OSL_ENSURE( pTD, "### unknown exception type! leaving out destruction => leaking!!!" ); 212 if (pTD) 213 { 214 ::uno_destructData( pExc, pTD, cpp_release ); 215 ::typelib_typedescription_release( pTD ); 216 } 217 } 218 219 //================================================================================================== 220 void raiseException( uno_Any * pUnoExc, uno_Mapping * pUno2Cpp ) 221 { 222 #if defined BRIDGES_DEBUG 223 OString cstr( 224 OUStringToOString( 225 *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ), 226 RTL_TEXTENCODING_ASCII_US ) ); 227 fprintf( stderr, "> uno exception occured: %s\n", cstr.getStr() ); 228 #endif 229 void * pCppExc; 230 type_info * rtti; 231 232 { 233 // construct cpp exception object 234 typelib_TypeDescription * pTypeDescr = 0; 235 TYPELIB_DANGER_GET( &pTypeDescr, pUnoExc->pType ); 236 OSL_ASSERT( pTypeDescr ); 237 if (! pTypeDescr) 238 { 239 throw RuntimeException( 240 OUString( RTL_CONSTASCII_USTRINGPARAM("cannot get typedescription for type ") ) + 241 *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ), 242 Reference< XInterface >() ); 243 } 244 245 pCppExc = __cxa_allocate_exception( pTypeDescr->nSize ); 246 ::uno_copyAndConvertData( pCppExc, pUnoExc->pData, pTypeDescr, pUno2Cpp ); 247 248 // destruct uno exception 249 ::uno_any_destruct( pUnoExc, 0 ); 250 // avoiding locked counts 251 static RTTI * s_rtti = 0; 252 if (! s_rtti) 253 { 254 MutexGuard guard( Mutex::getGlobalMutex() ); 255 if (! s_rtti) 256 { 257 #ifdef LEAK_STATIC_DATA 258 s_rtti = new RTTI(); 259 #else 260 static RTTI rtti_data; 261 s_rtti = &rtti_data; 262 #endif 263 } 264 } 265 rtti = (type_info *)s_rtti->getRTTI( (typelib_CompoundTypeDescription *) pTypeDescr ); 266 TYPELIB_DANGER_RELEASE( pTypeDescr ); 267 OSL_ENSURE( rtti, "### no rtti for throwing exception!" ); 268 if (! rtti) 269 { 270 throw RuntimeException( 271 OUString( RTL_CONSTASCII_USTRINGPARAM("no rtti for type ") ) + 272 *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ), 273 Reference< XInterface >() ); 274 } 275 } 276 277 __cxa_throw( pCppExc, rtti, deleteException ); 278 } 279 280 //================================================================================================== 281 void fillUnoException( __cxa_exception * header, uno_Any * pUnoExc, uno_Mapping * pCpp2Uno ) 282 { 283 if (! header) 284 { 285 RuntimeException aRE( 286 OUString( RTL_CONSTASCII_USTRINGPARAM("no exception header!") ), 287 Reference< XInterface >() ); 288 Type const & rType = ::getCppuType( &aRE ); 289 uno_type_any_constructAndConvert( pUnoExc, &aRE, rType.getTypeLibType(), pCpp2Uno ); 290 #if defined _DEBUG 291 OString cstr( OUStringToOString( aRE.Message, RTL_TEXTENCODING_ASCII_US ) ); 292 OSL_ENSURE( 0, cstr.getStr() ); 293 #endif 294 return; 295 } 296 297 typelib_TypeDescription * pExcTypeDescr = 0; 298 OUString unoName( toUNOname( header->exceptionType->name() ) ); 299 #if defined BRIDGES_DEBUG 300 OString cstr_unoName( OUStringToOString( unoName, RTL_TEXTENCODING_ASCII_US ) ); 301 fprintf( stderr, "> c++ exception occured: %s\n", cstr_unoName.getStr() ); 302 #endif 303 typelib_typedescription_getByName( &pExcTypeDescr, unoName.pData ); 304 if (0 == pExcTypeDescr) 305 { 306 RuntimeException aRE( 307 OUString( RTL_CONSTASCII_USTRINGPARAM("exception type not found: ") ) + unoName, 308 Reference< XInterface >() ); 309 Type const & rType = ::getCppuType( &aRE ); 310 uno_type_any_constructAndConvert( pUnoExc, &aRE, rType.getTypeLibType(), pCpp2Uno ); 311 #if defined _DEBUG 312 OString cstr( OUStringToOString( aRE.Message, RTL_TEXTENCODING_ASCII_US ) ); 313 OSL_ENSURE( 0, cstr.getStr() ); 314 #endif 315 } 316 else 317 { 318 // construct uno exception any 319 uno_any_constructAndConvert( pUnoExc, header->adjustedPtr, pExcTypeDescr, pCpp2Uno ); 320 typelib_typedescription_release( pExcTypeDescr ); 321 } 322 } 323 324 } 325 326