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27 
28 #include <stdio.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 "com/sun/star/uno/RuntimeException.hpp"
40 #include <typelib/typedescription.hxx>
41 #include <uno/any2.h>
42 
43 #include "share.hxx"
44 
45 #ifdef TEST
46 #include "test/TestBridgeException.hpp"
47 #endif
48 
49 using namespace ::std;
50 using namespace ::osl;
51 using namespace ::rtl;
52 using namespace ::com::sun::star::uno;
53 using namespace ::__cxxabiv1;
54 
55 //==================================================================================================
56 //YD static handle to this dll, to allow rtti symbol lookup
57 static	void*	hmod;
58 
59 //==================================================================================================
60 //YD required to run test programs, because exe cannot export symbols!
61 #ifdef TEST
62 using namespace ::test;
63 
64 void dymmy_TestBridgeException() throw( ::test::TestBridgeException)
65 {
66    throw TestBridgeException();
67 }
68 #endif
69 
70 //==================================================================================================
71 namespace CPPU_CURRENT_NAMESPACE
72 {
73 
74 void dummy_can_throw_anything( char const * )
75 {
76 }
77 
78 //==================================================================================================
79 static OUString toUNOname( char const * p ) SAL_THROW( () )
80 {
81 #if OSL_DEBUG_LEVEL > 1
82     char const * start = p;
83 #endif
84 
85     // example: N3com3sun4star4lang24IllegalArgumentExceptionE
86 
87 	OUStringBuffer buf( 64 );
88     OSL_ASSERT( 'N' == *p );
89     ++p; // skip N
90 
91     while ('E' != *p)
92     {
93         // read chars count
94         long n = (*p++ - '0');
95         while ('0' <= *p && '9' >= *p)
96         {
97             n *= 10;
98             n += (*p++ - '0');
99         }
100         buf.appendAscii( p, n );
101         p += n;
102         if ('E' != *p)
103             buf.append( (sal_Unicode)'.' );
104     }
105 
106 #if OSL_DEBUG_LEVEL > 1
107     OUString ret( buf.makeStringAndClear() );
108     OString c_ret( OUStringToOString( ret, RTL_TEXTENCODING_ASCII_US ) );
109     fprintf( stderr, "> toUNOname(): %s => %s\n", start, c_ret.getStr() );
110     return ret;
111 #else
112     return buf.makeStringAndClear();
113 #endif
114 }
115 
116 //==================================================================================================
117 class RTTI
118 {
119     typedef hash_map< OUString, type_info *, OUStringHash > t_rtti_map;
120 
121     Mutex m_mutex;
122 	t_rtti_map m_rttis;
123     t_rtti_map m_generatedRttis;
124 
125     //void * m_hApp;
126 
127 public:
128     RTTI() SAL_THROW( () );
129     ~RTTI() SAL_THROW( () );
130 
131     type_info * getRTTI( typelib_CompoundTypeDescription * ) SAL_THROW( () );
132 };
133 //__________________________________________________________________________________________________
134 RTTI::RTTI() SAL_THROW( () )
135 //    : m_hApp( dlopen( 0, RTLD_LAZY ) )
136 {
137 }
138 //__________________________________________________________________________________________________
139 RTTI::~RTTI() SAL_THROW( () )
140 {
141 //    dlclose( m_hApp );
142 }
143 
144 //__________________________________________________________________________________________________
145 type_info * RTTI::getRTTI( typelib_CompoundTypeDescription *pTypeDescr ) SAL_THROW( () )
146 {
147     type_info * rtti = NULL;
148 
149     OUString const & unoName = *(OUString const *)&pTypeDescr->aBase.pTypeName;
150 
151     MutexGuard guard( m_mutex );
152     t_rtti_map::const_iterator iFind( m_rttis.find( unoName ) );
153     if (iFind == m_rttis.end())
154     {
155         // RTTI symbol
156         OStringBuffer buf( 64 );
157         buf.append( RTL_CONSTASCII_STRINGPARAM("__ZTIN") );
158         sal_Int32 index = 0;
159         do
160         {
161             OUString token( unoName.getToken( 0, '.', index ) );
162             buf.append( token.getLength() );
163             OString c_token( OUStringToOString( token, RTL_TEXTENCODING_ASCII_US ) );
164             buf.append( c_token );
165         }
166         while (index >= 0);
167         buf.append( 'E' );
168 
169         OString symName( buf.makeStringAndClear() );
170         //rtti = (type_info *)dlsym( m_hApp, symName.getStr() );
171 	if (hmod == NULL)
172 		hmod = dlopen( "gcc3_uno.dll", 0);
173 
174 	if (hmod)
175 	        rtti = (type_info *)dlsym( hmod, symName.getStr() );
176 
177         if (rtti)
178         {
179             pair< t_rtti_map::iterator, bool > insertion(
180                 m_rttis.insert( t_rtti_map::value_type( unoName, rtti ) ) );
181             OSL_ENSURE( insertion.second, "### inserting new rtti failed?!" );
182         }
183         else
184         {
185             // try to lookup the symbol in the generated rtti map
186             t_rtti_map::const_iterator iFind( m_generatedRttis.find( unoName ) );
187             if (iFind == m_generatedRttis.end())
188             {
189                 // we must generate it !
190                 // symbol and rtti-name is nearly identical,
191                 // the symbol is prefixed with __ZTI
192                 char const * rttiName = symName.getStr() +5;
193 #if OSL_DEBUG_LEVEL > 1
194                 fprintf( stderr,"generated rtti for %s\n", rttiName );
195 #endif
196                 if (pTypeDescr->pBaseTypeDescription)
197                 {
198                     // ensure availability of base
199                     type_info * base_rtti = getRTTI(
200                         (typelib_CompoundTypeDescription *)pTypeDescr->pBaseTypeDescription );
201                     rtti = new __si_class_type_info(
202                         strdup( rttiName ), (__class_type_info *)base_rtti );
203                 }
204                 else
205                 {
206                     // this class has no base class
207                     rtti = new __class_type_info( strdup( rttiName ) );
208                 }
209 
210                 pair< t_rtti_map::iterator, bool > insertion(
211                     m_generatedRttis.insert( t_rtti_map::value_type( unoName, rtti ) ) );
212                 OSL_ENSURE( insertion.second, "### inserting new generated rtti failed?!" );
213             }
214             else // taking already generated rtti
215             {
216                 rtti = iFind->second;
217             }
218         }
219     }
220     else
221     {
222         rtti = iFind->second;
223     }
224 
225     return rtti;
226 }
227 
228 //--------------------------------------------------------------------------------------------------
229 static void deleteException( void * pExc )
230 {
231     __cxa_exception const * header = ((__cxa_exception const *)pExc - 1);
232     typelib_TypeDescription * pTD = 0;
233     OUString unoName( toUNOname( header->exceptionType->name() ) );
234     ::typelib_typedescription_getByName( &pTD, unoName.pData );
235     OSL_ENSURE( pTD, "### unknown exception type! leaving out destruction => leaking!!!" );
236     if (pTD)
237     {
238 		::uno_destructData( pExc, pTD, cpp_release );
239 		::typelib_typedescription_release( pTD );
240 	}
241 }
242 
243 //==================================================================================================
244 void raiseException( uno_Any * pUnoExc, uno_Mapping * pUno2Cpp )
245 {
246 #if OSL_DEBUG_LEVEL > 1
247     OString cstr(
248         OUStringToOString(
249             *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
250             RTL_TEXTENCODING_ASCII_US ) );
251     fprintf( stderr, "> uno exception occured: %s\n", cstr.getStr() );
252 #endif
253     void * pCppExc;
254     type_info * rtti;
255 
256     {
257     // construct cpp exception object
258 	typelib_TypeDescription * pTypeDescr = 0;
259 	TYPELIB_DANGER_GET( &pTypeDescr, pUnoExc->pType );
260     OSL_ASSERT( pTypeDescr );
261     if (! pTypeDescr)
262     {
263         throw RuntimeException(
264             OUString( RTL_CONSTASCII_USTRINGPARAM("cannot get typedescription for type ") ) +
265             *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
266             Reference< XInterface >() );
267     }
268 
269 	pCppExc = __cxa_allocate_exception( pTypeDescr->nSize );
270 	::uno_copyAndConvertData( pCppExc, pUnoExc->pData, pTypeDescr, pUno2Cpp );
271 
272 	// destruct uno exception
273 	::uno_any_destruct( pUnoExc, 0 );
274     // avoiding locked counts
275     static RTTI * s_rtti = 0;
276     if (! s_rtti)
277     {
278         MutexGuard guard( Mutex::getGlobalMutex() );
279         if (! s_rtti)
280         {
281 #ifdef LEAK_STATIC_DATA
282             s_rtti = new RTTI();
283 #else
284             static RTTI rtti_data;
285             s_rtti = &rtti_data;
286 #endif
287         }
288     }
289 	rtti = (type_info *)s_rtti->getRTTI( (typelib_CompoundTypeDescription *) pTypeDescr );
290     TYPELIB_DANGER_RELEASE( pTypeDescr );
291     OSL_ENSURE( rtti, "### no rtti for throwing exception!" );
292     if (! rtti)
293     {
294         throw RuntimeException(
295             OUString( RTL_CONSTASCII_USTRINGPARAM("no rtti for type ") ) +
296             *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
297             Reference< XInterface >() );
298     }
299     }
300 
301 	__cxa_throw( pCppExc, rtti, deleteException );
302 }
303 
304 //==================================================================================================
305 void fillUnoException( __cxa_exception * header, uno_Any * pUnoExc, uno_Mapping * pCpp2Uno )
306 {
307     if (! header)
308     {
309         RuntimeException aRE(
310             OUString( RTL_CONSTASCII_USTRINGPARAM("no exception header!") ),
311             Reference< XInterface >() );
312         Type const & rType = ::getCppuType( &aRE );
313         uno_type_any_constructAndConvert( pUnoExc, &aRE, rType.getTypeLibType(), pCpp2Uno );
314 #if OSL_DEBUG_LEVEL > 0
315         OString cstr( OUStringToOString( aRE.Message, RTL_TEXTENCODING_ASCII_US ) );
316         OSL_ENSURE( 0, cstr.getStr() );
317 #endif
318         return;
319     }
320 
321 	typelib_TypeDescription * pExcTypeDescr = 0;
322     OUString unoName( toUNOname( header->exceptionType->name() ) );
323 #if OSL_DEBUG_LEVEL > 1
324     OString cstr_unoName( OUStringToOString( unoName, RTL_TEXTENCODING_ASCII_US ) );
325     fprintf( stderr, "> c++ exception occured: %s\n", cstr_unoName.getStr() );
326 #endif
327 	typelib_typedescription_getByName( &pExcTypeDescr, unoName.pData );
328     if (0 == pExcTypeDescr)
329     {
330         RuntimeException aRE(
331             OUString( RTL_CONSTASCII_USTRINGPARAM("exception type not found: ") ) + unoName,
332             Reference< XInterface >() );
333         Type const & rType = ::getCppuType( &aRE );
334         uno_type_any_constructAndConvert( pUnoExc, &aRE, rType.getTypeLibType(), pCpp2Uno );
335 #if OSL_DEBUG_LEVEL > 0
336         OString cstr( OUStringToOString( aRE.Message, RTL_TEXTENCODING_ASCII_US ) );
337         OSL_ENSURE( 0, cstr.getStr() );
338 #endif
339     }
340     else
341     {
342         // construct uno exception any
343         uno_any_constructAndConvert( pUnoExc, header->adjustedPtr, pExcTypeDescr, pCpp2Uno );
344         typelib_typedescription_release( pExcTypeDescr );
345     }
346 }
347 
348 }
349 
350