X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/3e4efd7cb97cb2b3d33f34d3516b6f2efdaa3bfa..4def3b359546ee186b3db723db719f85b761f36a:/src/common/dynlib.cpp diff --git a/src/common/dynlib.cpp b/src/common/dynlib.cpp index ead9a1baef..f90788fb17 100644 --- a/src/common/dynlib.cpp +++ b/src/common/dynlib.cpp @@ -18,46 +18,88 @@ // ---------------------------------------------------------------------------- #ifdef __GNUG__ - #pragma implementation "dynlib.h" +# pragma implementation "dynlib.h" #endif #include "wx/wxprec.h" -#ifdef __BORLANDC__ +#ifdef __BORLANDC__ #pragma hdrstop -#endif //__BORLANDC__ +#endif + +#if wxUSE_DYNLIB_CLASS + +#if defined(__WINDOWS__) + #include "wx/msw/private.h" +#endif #include "wx/dynlib.h" #include "wx/filefn.h" #include "wx/intl.h" #include "wx/log.h" +#include "wx/tokenzr.h" // ---------------------------------------------------------------------------- // conditional compilation // ---------------------------------------------------------------------------- -#if defined(HAVE_DLOPEN) - #define wxDllOpen(lib) dlopen(lib, RTLD_LAZY) - #define wxDllGetSymbol(handle, name) dlsym(handle, (char *)name) - #define wxDllClose dlclose -#elif defined(HAVE_SHLLOAD) - #define wxDllOpen(lib) shl_open(lib, BIND_DEFERRED, 0) - #define wxDllClose shl_unload +#if defined(__WXPM__) || defined(__EMX__) +# define INCL_DOS +# include +# define wxDllOpen(error, lib, handle) DosLoadModule(error, sizeof(error), lib, &handle) +# define wxDllGetSymbol(handle, modaddr) DosQueryProcAddr(handle, 1L, NULL, (PFN*)modaddr) +# define wxDllClose(handle) DosFreeModule(handle) +#elif defined(HAVE_DLOPEN) + // note about dlopen() flags: we use RTLD_NOW to have more Windows-like + // behaviour (Win won't let you load a library with missing symbols) and + // RTLD_GLOBAL because it is needed sometimes and probably doesn't hurt + // otherwise. On True64-Unix RTLD_GLOBAL is not allowed and on VMS the + // second argument on dlopen is ignored. +#ifdef __VMS +# define wxDllOpen(lib) dlopen(lib.fn_str(), 0 ) +#elif defined( __osf__ ) +# define wxDllOpen(lib) dlopen(lib.fn_str(), RTLD_LAZY ) +#else +# define wxDllOpen(lib) dlopen(lib.fn_str(), RTLD_LAZY | RTLD_GLOBAL) +#endif +#define wxDllGetSymbol(handle, name) dlsym(handle, name) +# define wxDllClose dlclose +#elif defined(HAVE_SHL_LOAD) +# define wxDllOpen(lib) shl_load(lib.fn_str(), BIND_DEFERRED, 0) +# define wxDllClose shl_unload - static inline void *wxDllGetSymbol(shl_t *handle, const char *name) + static inline void *wxDllGetSymbol(shl_t handle, const wxString& name) { void *sym; - if ( shl_findsym(handle, name, TYPE_UNDEFINED, &sym) == 0 ) + if ( shl_findsym(&handle, name.mb_str(), TYPE_UNDEFINED, &sym) == 0 ) return sym; else return (void *)0; } +#elif defined(__APPLE__) && defined(__UNIX__) +void *dlopen(const char *path, int mode /* mode is ignored */); +void *dlsym(void *handle, const char *symbol); +int dlclose(void *handle); +const char *dlerror(void); + +# define wxDllOpen(lib) dlopen(lib.fn_str(), 0) +# define wxDllGetSymbol(handle, name) dlsym(handle, name) +# define wxDllClose dlclose #elif defined(__WINDOWS__) - #define wxDllOpen(lib) ::LoadLibrary(lib) - #define wxDllGetSymbol(handle, name) ::GetProcAddress(handle, name) - #define wxDllClose ::FreeLibrary + // using LoadLibraryEx under Win32 to avoid name clash with LoadLibrary +# ifdef __WIN32__ +#ifdef _UNICODE +# define wxDllOpen(lib) ::LoadLibraryExW(lib, 0, 0) #else - #error "Don't know how to load shared libraries on this platform." +# define wxDllOpen(lib) ::LoadLibraryExA(lib, 0, 0) +#endif +# else // Win16 +# define wxDllOpen(lib) ::LoadLibrary(lib) +# endif // Win32/16 +# define wxDllGetSymbol(handle, name) ::GetProcAddress(handle, name) +# define wxDllClose ::FreeLibrary +#else +# error "Don't know how to load shared libraries on this platform." #endif // OS // --------------------------------------------------------------------------- @@ -66,29 +108,20 @@ wxLibraries wxTheLibraries; -// ---------------------------------------------------------------------------- -// private functions -// ---------------------------------------------------------------------------- +// ============================================================================ +// implementation +// ============================================================================ // construct the full name from the base shared object name: adds a .dll // suffix under Windows or .so under Unix static wxString ConstructLibraryName(const wxString& basename) { - wxString fullname(basename); - -#if defined(__UNIX__) - fullname << ".so"; -#elif defined(__WINDOWS__) - fullname << ".dll"; -#endif + wxString fullname; + fullname << basename << wxDllLoader::GetDllExt(); return fullname; } -// ============================================================================ -// implementation -// ============================================================================ - // --------------------------------------------------------------------------- // wxLibrary (one instance per dynamic library) // --------------------------------------------------------------------------- @@ -133,7 +166,7 @@ void wxLibrary::PrepareClasses(wxClassInfo *first) { if (info->m_className) classTable.Put(info->m_className, (wxObject *)info); - info = info->GetNext(); + info = (wxClassInfo *)info->GetNext(); } // Set base pointers for each wxClassInfo @@ -149,33 +182,153 @@ void wxLibrary::PrepareClasses(wxClassInfo *first) } void *wxLibrary::GetSymbol(const wxString& symbname) +{ + return wxDllLoader::GetSymbol(m_handle, symbname); +} + +// --------------------------------------------------------------------------- +// wxDllLoader +// --------------------------------------------------------------------------- + +/* static */ +wxString wxDllLoader::GetDllExt() +{ + wxString ext; + +#if defined(__WINDOWS__) || defined(__WXPM__) || defined(__EMX__) + ext = _T(".dll"); +#elif defined(__UNIX__) +# if defined(__HPUX__) + ext = _T(".sl"); +# else //__HPUX__ + ext = _T(".so"); +# endif //__HPUX__ +#endif + + return ext; +} + +/* static */ +wxDllType +wxDllLoader::GetProgramHandle(void) +{ +#if defined( HAVE_DLOPEN ) && !defined(__EMX__) + // optain handle for main program + return dlopen(NULL, RTLD_NOW/*RTLD_LAZY*/); +#elif defined (HAVE_SHL_LOAD) + // shl_findsymbol with NULL handle looks up in main program + return 0; +#else + wxFAIL_MSG( wxT("This method is not implemented under Windows or OS/2")); + return 0; +#endif +} + +/* static */ +wxDllType +wxDllLoader::LoadLibrary(const wxString & libname, bool *success) +{ + wxDllType handle; + +#if defined(__WXMAC__) && !defined(__UNIX__) + FSSpec myFSSpec ; + Ptr myMainAddr ; + Str255 myErrName ; + + wxMacPathToFSSpec( libname , &myFSSpec ) ; + if (GetDiskFragment( &myFSSpec , 0 , kCFragGoesToEOF , "\p" , kPrivateCFragCopy , &handle , &myMainAddr , + myErrName ) != noErr ) + { + p2cstr( myErrName ) ; + wxASSERT_MSG( 1 , (char*)myErrName ) ; + return NULL ; + } +#elif defined(__WXPM__) || defined(__EMX__) + char zError[256] = ""; + wxDllOpen(zError, libname, handle); +#else // !Mac + handle = wxDllOpen(libname); +#endif // OS + + if ( !handle ) + { + wxString msg(_("Failed to load shared library '%s'")); + +#ifdef HAVE_DLERROR + const char *errmsg = dlerror(); + if ( errmsg ) + { + // the error string format is "libname: ...", but we already have + // libname, so cut it off + const char *p = strchr(errmsg, ':'); + if ( p ) + { + if ( *++p == ' ' ) + p++; + } + else + { + p = errmsg; + } + + msg += _T(" (%s)"); + wxLogError(msg, libname.c_str(), p); + } + else +#endif // HAVE_DLERROR + { + wxLogSysError(msg, libname.c_str()); + } + } + + if ( success ) + { + *success = handle != 0; + } + + return handle; +} + + +/* static */ +void +wxDllLoader::UnloadLibrary(wxDllType handle) +{ + wxDllClose(handle); +} + +/* static */ +void * +wxDllLoader::GetSymbol(wxDllType dllHandle, const wxString &name) { void *symbol = NULL; // return value -#if defined( __WXMAC__ ) +#if defined(__WXMAC__) && !defined(__UNIX__) Ptr symAddress ; CFragSymbolClass symClass ; - Str255 symName ; + Str255 symName ; - strcpy( (char*) symName , symbname ) ; - c2pstr( (char*) symName ) ; +#if TARGET_CARBON + c2pstrcpy( (StringPtr) symName , name ) ; +#else + strcpy( (char *) symName , name ) ; + c2pstr( (char *) symName ) ; +#endif - if ( FindSymbol( m_handle , symName , &symAddress , &symClass ) == noErr ) - { - symbol = (void *)symAddress ; - } + if ( FindSymbol( dllHandle , symName , &symAddress , &symClass ) == noErr ) + symbol = (void *)symAddress ; +#elif defined( __WXPM__ ) || defined(__EMX__) + wxDllGetSymbol(dllHandle, symbol); #else - // VZ: hmm... why is WXSTRINGCAST needed? if it's really modified, we - // should make a copy of it - symbol = wxDllGetSymbol(m_handle, WXSTRINGCAST symbname); + // mb_str() is necessary in Unicode build + symbol = wxDllGetSymbol(dllHandle, name.mb_str()); #endif if ( !symbol ) { wxLogSysError(_("Couldn't find symbol '%s' in a dynamic library"), - symbname.c_str()); + name.c_str()); } - return symbol; } @@ -183,7 +336,7 @@ void *wxLibrary::GetSymbol(const wxString& symbname) // wxLibraries (only one instance should normally exist) // --------------------------------------------------------------------------- -wxLibraries::wxLibraries() +wxLibraries::wxLibraries():m_loaded(wxKEY_STRING) { } @@ -205,53 +358,59 @@ wxLibrary *wxLibraries::LoadLibrary(const wxString& name) wxLibrary *lib; wxClassInfo *old_sm_first; - if ( (node = m_loaded.Find(name.GetData())) ) +#if defined(__VISAGECPP__) + node = m_loaded.Find(name.GetData()); + if (node != NULL) return ((wxLibrary *)node->Data()); - +#else // !OS/2 + if ( (node = m_loaded.Find(name.GetData())) != NULL) + return ((wxLibrary *)node->Data()); +#endif // If DLL shares data, this is necessary. old_sm_first = wxClassInfo::sm_first; wxClassInfo::sm_first = NULL; - wxString lib_name = ConstructLibraryName(name); + wxString libname = ConstructLibraryName(name); +/* + Unix automatically builds that library name, at least for dlopen() +*/ +#if 0 #if defined(__UNIX__) - // TODO use LD_LIBRARY_PATH! - lib_name.Prepend("/lib"); -#endif // __UNIX__ - - wxDllType handle ; - -#if defined(__WXMAC__) - FSSpec myFSSpec ; - Ptr myMainAddr ; - Str255 myErrName ; - - wxMacPathToFSSpec( lib_name , &myFSSpec ) ; - if (GetDiskFragment( &myFSSpec , 0 , kCFragGoesToEOF , "\p" , kPrivateCFragCopy , &handle , &myMainAddr , - myErrName ) != noErr ) + // found the first file in LD_LIBRARY_PATH with this name + wxString libPath("/lib:/usr/lib"); // system path first + const char *envLibPath = getenv("LD_LIBRARY_PATH"); + if ( envLibPath ) + libPath << wxT(':') << envLibPath; + wxStringTokenizer tokenizer(libPath, wxT(':')); + while ( tokenizer.HasMoreToken() ) { - p2cstr( myErrName ) ; - wxASSERT_MSG( 1 , (char*)myErrName ) ; - return NULL ; - } -#else // !Mac - handle = wxDllOpen(lib_name); -#endif // OS + wxString fullname(tokenizer.NextToken()); - if ( !handle ) - { - wxLogSysError(_("Failed to load shared library '%s'"), - lib_name.c_str()); + fullname << wxT('/') << libname; + if ( wxFileExists(fullname) ) + { + libname = fullname; - return NULL; + // found the library + break; + } } + //else: not found in the path, leave the name as is (secutiry risk?) - lib = new wxLibrary(handle); - - wxClassInfo::sm_first = old_sm_first; - - m_loaded.Append(name.GetData(), lib); +#endif // __UNIX__ +#endif + bool success = FALSE; + wxDllType handle = wxDllLoader::LoadLibrary(libname, &success); + if(success) + { + lib = new wxLibrary(handle); + wxClassInfo::sm_first = old_sm_first; + m_loaded.Append(name.GetData(), lib); + } + else + lib = NULL; return lib; } @@ -269,3 +428,5 @@ wxObject *wxLibraries::CreateObject(const wxString& path) } return NULL; } + +#endif // wxUSE_DYNLIB_CLASS