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11  *   http://www.apache.org/licenses/LICENSE-2.0
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13  * Unless required by applicable law or agreed to in writing,
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20  *************************************************************/
21 
22 
23 
24 // MARKER(update_precomp.py): autogen include statement, do not remove
25 #include "precompiled_bridges.hxx"
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 
dummy_can_throw_anything(char const *)55 void dummy_can_throw_anything( char const * )
56 {
57 }
58 
59 //==================================================================================================
toUNOname(char const * p)60 static OUString toUNOname( char const * p ) SAL_THROW( () )
61 {
62 #if OSL_DEBUG_LEVEL > 1
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 OSL_DEBUG_LEVEL > 1
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 //__________________________________________________________________________________________________
RTTI()115 RTTI::RTTI() SAL_THROW( () )
116     : m_hApp( dlopen( 0, RTLD_LAZY ) )
117 {
118 }
119 //__________________________________________________________________________________________________
~RTTI()120 RTTI::~RTTI() SAL_THROW( () )
121 {
122     dlclose( m_hApp );
123 }
124 
125 //__________________________________________________________________________________________________
getRTTI(typelib_CompoundTypeDescription * pTypeDescr)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 OSL_DEBUG_LEVEL > 1
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 //--------------------------------------------------------------------------------------------------
deleteException(void * pExc)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 //==================================================================================================
raiseException(uno_Any * pUnoExc,uno_Mapping * pUno2Cpp)220 void raiseException( uno_Any * pUnoExc, uno_Mapping * pUno2Cpp )
221 {
222     void * pCppExc;
223     type_info * rtti;
224 
225     {
226     // construct cpp exception object
227 	typelib_TypeDescription * pTypeDescr = 0;
228 	TYPELIB_DANGER_GET( &pTypeDescr, pUnoExc->pType );
229     OSL_ASSERT( pTypeDescr );
230     if (! pTypeDescr)
231         terminate();
232 
233 	pCppExc = __cxa_allocate_exception( pTypeDescr->nSize );
234 	::uno_copyAndConvertData( pCppExc, pUnoExc->pData, pTypeDescr, pUno2Cpp );
235 
236 	// destruct uno exception
237 	::uno_any_destruct( pUnoExc, 0 );
238     // avoiding locked counts
239     static RTTI * s_rtti = 0;
240     if (! s_rtti)
241     {
242         MutexGuard guard( Mutex::getGlobalMutex() );
243         if (! s_rtti)
244         {
245 #ifdef LEAK_STATIC_DATA
246             s_rtti = new RTTI();
247 #else
248             static RTTI rtti_data;
249             s_rtti = &rtti_data;
250 #endif
251         }
252     }
253 	rtti = (type_info *)s_rtti->getRTTI( (typelib_CompoundTypeDescription *) pTypeDescr );
254     TYPELIB_DANGER_RELEASE( pTypeDescr );
255     OSL_ENSURE( rtti, "### no rtti for throwing exception!" );
256     if (! rtti)
257         terminate();
258     }
259 
260 	__cxa_throw( pCppExc, rtti, deleteException );
261 }
262 
263 //==================================================================================================
fillUnoException(__cxa_exception * header,uno_Any * pExc,uno_Mapping * pCpp2Uno)264 void fillUnoException( __cxa_exception * header, uno_Any * pExc, uno_Mapping * pCpp2Uno )
265 {
266     OSL_ENSURE( header, "### no exception header!!!" );
267     if (! header)
268         terminate();
269 
270 	typelib_TypeDescription * pExcTypeDescr = 0;
271     OUString unoName( toUNOname( header->exceptionType->name() ) );
272 	::typelib_typedescription_getByName( &pExcTypeDescr, unoName.pData );
273     OSL_ENSURE( pExcTypeDescr, "### can not get type description for exception!!!" );
274     if (! pExcTypeDescr)
275         terminate();
276 
277     // construct uno exception any
278     ::uno_any_constructAndConvert( pExc, header->adjustedPtr, pExcTypeDescr, pCpp2Uno );
279     ::typelib_typedescription_release( pExcTypeDescr );
280 }
281 
282 }
283 /* vi:set tabstop=4 shiftwidth=4 expandtab: */
284