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/* ****************************************************************************
* eID Middleware Project.
* Copyright (C) 2008-2009 FedICT.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License version
* 3.0 as published by the Free Software Foundation.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, see
* http://www.gnu.org/licenses/.
**************************************************************************** */
#include "DynamicLib.h"
using namespace eIDMW;
CDynamicLib::CDynamicLib()
{
m_module = NULL;
}
CDynamicLib::~CDynamicLib()
{
if (m_module != NULL)
Close();
}
unsigned long CDynamicLib::Open(const std::string & csLibPath)
{
if (m_module != NULL)
Close();
return PlatformOpen(csLibPath.c_str());
}
void * CDynamicLib::GetAddress(const std::string & csFunctionName)
{
if (m_module != m_module)
return NULL;
return PlatformGetAddress(csFunctionName.c_str());
}
void CDynamicLib::Close()
{
if (m_module != m_module)
return PlatformClose();
m_module = NULL;
}
///////////////////////////////// Windows ////////////////////////
#ifdef WIN32
#include <windows.h>
unsigned long CDynamicLib::PlatformOpen(const char * csLibPath)
{
m_module = (void *) LoadLibraryA(csLibPath);
return (m_module == NULL) ? EIDMW_CANT_LOAD_LIB : EIDMW_OK;
}
void * CDynamicLib::PlatformGetAddress(const char * csFunctionName)
{
return GetProcAddress((HMODULE) m_module, csFunctionName);
}
void CDynamicLib::PlatformClose()
{
FreeLibrary((HMODULE) m_module);
}
#endif
////////////////////////////////// Linux /////////////////////////
#ifdef USING_DL_OPEN
#include <dlfcn.h>
unsigned long CDynamicLib::PlatformOpen(const char * csLibPath)
{
m_module = dlopen(csLibPath, RTLD_NOW);
return m_module == NULL ? EIDMW_CANT_LOAD_LIB : EIDMW_OK;
}
void * CDynamicLib::PlatformGetAddress(const char * csFunctionName)
{
char csSymName[4096];
csSymName[0] = '_';
csSymName[1] = '\0';
strncat(csSymName, csFunctionName, sizeof(csSymName) - 2);
csSymName[sizeof(csSymName) - 1] = '\0';
return dlsym(m_module, csFunctionName);
}
void CDynamicLib::PlatformClose()
{
dlclose(m_module);
}
#endif
/////////////////////////////////// Mac //////////////////////////
#ifdef __APPLE__
#include <Carbon/Carbon.h>
#include <mach-o/dyld.h>
unsigned long CDynamicLib::PlatformOpen(const char * csLibPath)
{
m_module = (struct mach_header *) NSAddImage(csLibPath,
NSADDIMAGE_OPTION_WITH_SEARCHING);
return m_module == NULL ? EIDMW_CANT_LOAD_LIB : EIDMW_OK;
}
void * CDynamicLib::PlatformGetAddress(const char * csFunctionName)
{
char csSymName[4096];
csSymName[0] = '_';
csSymName[1] = '\0';
strncat(csSymName, csFunctionName, sizeof(csSymName) - 2);
csSymName[sizeof(csSymName) - 1] = '\0';
NSSymbol nssym = NSLookupSymbolInImage(
(const struct mach_header *) m_module, csSymName,
NSLOOKUPSYMBOLINIMAGE_OPTION_BIND_NOW);
return nssym == NULL ? NULL : NSAddressOfSymbol(nssym);
}
void CDynamicLib::PlatformClose()
{
// It seems unpossible to unload a library on Mac OS X
// http://lists.apple.com/archives/Carbon-development/2004/Mar/msg00250.html
}
#endif
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