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27 
28 // MARKER(update_precomp.py): autogen include statement, do not remove
29 #include "precompiled_bridges.hxx"
30 
31 #include <stdio.h>
32 #include <string.h>
33 #include <dlfcn.h>
34 #include <cxxabi.h>
35 #include <hash_map>
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     : m_hApp( dlopen( 0, RTLD_LAZY ) )
122 {
123 }
124 //__________________________________________________________________________________________________
125 RTTI::~RTTI() SAL_THROW( () )
126 {
127     dlclose( m_hApp );
128 }
129 
130 //__________________________________________________________________________________________________
131 type_info * RTTI::getRTTI( typelib_CompoundTypeDescription *pTypeDescr ) SAL_THROW( () )
132 {
133     type_info * rtti;
134 
135     OUString const & unoName = *(OUString const *)&pTypeDescr->aBase.pTypeName;
136 
137     MutexGuard guard( m_mutex );
138     t_rtti_map::const_iterator iRttiFind( m_rttis.find( unoName ) );
139     if (iRttiFind == m_rttis.end())
140     {
141         // RTTI symbol
142         OStringBuffer buf( 64 );
143         buf.append( RTL_CONSTASCII_STRINGPARAM("_ZTIN") );
144         sal_Int32 index = 0;
145         do
146         {
147             OUString token( unoName.getToken( 0, '.', index ) );
148             buf.append( token.getLength() );
149             OString c_token( OUStringToOString( token, RTL_TEXTENCODING_ASCII_US ) );
150             buf.append( c_token );
151         }
152         while (index >= 0);
153         buf.append( 'E' );
154 
155         OString symName( buf.makeStringAndClear() );
156         rtti = (type_info *)dlsym( m_hApp, symName.getStr() );
157 
158         if (rtti)
159         {
160             pair< t_rtti_map::iterator, bool > insertion(
161                 m_rttis.insert( t_rtti_map::value_type( unoName, rtti ) ) );
162             OSL_ENSURE( insertion.second, "### inserting new rtti failed?!" );
163         }
164         else
165         {
166             // try to lookup the symbol in the generated rtti map
167             t_rtti_map::const_iterator iFind( m_generatedRttis.find( unoName ) );
168             if (iFind == m_generatedRttis.end())
169             {
170                 // we must generate it !
171                 // symbol and rtti-name is nearly identical,
172                 // the symbol is prefixed with _ZTI
173                 char const * rttiName = symName.getStr() +4;
174 #if OSL_DEBUG_LEVEL > 1
175                 fprintf( stderr,"generated rtti for %s\n", rttiName );
176 #endif
177                 if (pTypeDescr->pBaseTypeDescription)
178                 {
179                     // ensure availability of base
180                     type_info * base_rtti = getRTTI(
181                         (typelib_CompoundTypeDescription *)pTypeDescr->pBaseTypeDescription );
182                     rtti = new __si_class_type_info(
183                         strdup( rttiName ), (__class_type_info *)base_rtti );
184                 }
185                 else
186                 {
187                     // this class has no base class
188                     rtti = new __class_type_info( strdup( rttiName ) );
189                 }
190 
191                 pair< t_rtti_map::iterator, bool > insertion(
192                     m_generatedRttis.insert( t_rtti_map::value_type( unoName, rtti ) ) );
193                 OSL_ENSURE( insertion.second, "### inserting new generated rtti failed?!" );
194             }
195             else // taking already generated rtti
196             {
197                 rtti = iFind->second;
198             }
199         }
200     }
201     else
202     {
203         rtti = iRttiFind->second;
204     }
205 
206     return rtti;
207 }
208 
209 //--------------------------------------------------------------------------------------------------
210 static void deleteException( void * pExc )
211 {
212     __cxa_exception const * header = ((__cxa_exception const *)pExc - 1);
213     typelib_TypeDescription * pTD = 0;
214     OUString unoName( toUNOname( header->exceptionType->name() ) );
215     ::typelib_typedescription_getByName( &pTD, unoName.pData );
216     OSL_ENSURE( pTD, "### unknown exception type! leaving out destruction => leaking!!!" );
217     if (pTD)
218     {
219 		::uno_destructData( pExc, pTD, cpp_release );
220 		::typelib_typedescription_release( pTD );
221 	}
222 }
223 
224 //==================================================================================================
225 void raiseException( uno_Any * pUnoExc, uno_Mapping * pUno2Cpp )
226 {
227 #if OSL_DEBUG_LEVEL > 1
228     OString cstr(
229         OUStringToOString(
230             *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
231             RTL_TEXTENCODING_ASCII_US ) );
232     fprintf( stderr, "> uno exception occured: %s\n", cstr.getStr() );
233 #endif
234     void * pCppExc;
235     type_info * rtti;
236 
237     {
238     // construct cpp exception object
239 	typelib_TypeDescription * pTypeDescr = 0;
240 	TYPELIB_DANGER_GET( &pTypeDescr, pUnoExc->pType );
241     OSL_ASSERT( pTypeDescr );
242     if (! pTypeDescr)
243     {
244         throw RuntimeException(
245             OUString( RTL_CONSTASCII_USTRINGPARAM("cannot get typedescription for type ") ) +
246             *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
247             Reference< XInterface >() );
248     }
249 
250 	pCppExc = __cxa_allocate_exception( pTypeDescr->nSize );
251 	::uno_copyAndConvertData( pCppExc, pUnoExc->pData, pTypeDescr, pUno2Cpp );
252 
253 	// destruct uno exception
254 	::uno_any_destruct( pUnoExc, 0 );
255     // avoiding locked counts
256     static RTTI * s_rtti = 0;
257     if (! s_rtti)
258     {
259         MutexGuard guard( Mutex::getGlobalMutex() );
260         if (! s_rtti)
261         {
262 #ifdef LEAK_STATIC_DATA
263             s_rtti = new RTTI();
264 #else
265             static RTTI rtti_data;
266             s_rtti = &rtti_data;
267 #endif
268         }
269     }
270 	rtti = (type_info *)s_rtti->getRTTI( (typelib_CompoundTypeDescription *) pTypeDescr );
271     TYPELIB_DANGER_RELEASE( pTypeDescr );
272     OSL_ENSURE( rtti, "### no rtti for throwing exception!" );
273     if (! rtti)
274     {
275         throw RuntimeException(
276             OUString( RTL_CONSTASCII_USTRINGPARAM("no rtti for type ") ) +
277             *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
278             Reference< XInterface >() );
279     }
280     }
281 
282 	__cxa_throw( pCppExc, rtti, deleteException );
283 }
284 
285 //==================================================================================================
286 void fillUnoException( __cxa_exception * header, uno_Any * pUnoExc, uno_Mapping * pCpp2Uno )
287 {
288     if (! header)
289     {
290         RuntimeException aRE(
291             OUString( RTL_CONSTASCII_USTRINGPARAM("no exception header!") ),
292             Reference< XInterface >() );
293         Type const & rType = ::getCppuType( &aRE );
294         uno_type_any_constructAndConvert( pUnoExc, &aRE, rType.getTypeLibType(), pCpp2Uno );
295 #if OSL_DEBUG_LEVEL > 0
296         OString cstr( OUStringToOString( aRE.Message, RTL_TEXTENCODING_ASCII_US ) );
297         OSL_ENSURE( 0, cstr.getStr() );
298 #endif
299         return;
300     }
301 
302 	typelib_TypeDescription * pExcTypeDescr = 0;
303     OUString unoName( toUNOname( header->exceptionType->name() ) );
304 #if OSL_DEBUG_LEVEL > 1
305     OString cstr_unoName( OUStringToOString( unoName, RTL_TEXTENCODING_ASCII_US ) );
306     fprintf( stderr, "> c++ exception occured: %s\n", cstr_unoName.getStr() );
307 #endif
308 	typelib_typedescription_getByName( &pExcTypeDescr, unoName.pData );
309     if (0 == pExcTypeDescr)
310     {
311         RuntimeException aRE(
312             OUString( RTL_CONSTASCII_USTRINGPARAM("exception type not found: ") ) + unoName,
313             Reference< XInterface >() );
314         Type const & rType = ::getCppuType( &aRE );
315         uno_type_any_constructAndConvert( pUnoExc, &aRE, rType.getTypeLibType(), pCpp2Uno );
316 #if OSL_DEBUG_LEVEL > 0
317         OString cstr( OUStringToOString( aRE.Message, RTL_TEXTENCODING_ASCII_US ) );
318         OSL_ENSURE( 0, cstr.getStr() );
319 #endif
320     }
321     else
322     {
323         // construct uno exception any
324         uno_any_constructAndConvert( pUnoExc, header->adjustedPtr, pExcTypeDescr, pCpp2Uno );
325         typelib_typedescription_release( pExcTypeDescr );
326     }
327 }
328 
329 }
330 
331