barrier/src/lib/platform/CMSWindowsHookLibraryLoader...

93 lines
2.8 KiB
C++

/*
* synergy -- mouse and keyboard sharing utility
* Copyright (C) 2012 Bolton Software Ltd.
* Copyright (C) 2011 Chris Schoeneman
*
* This package is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* found in the file COPYING that should have accompanied this file.
*
* This package 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "CMSWindowsHookLibraryLoader.h"
#include "XScreen.h"
#include "CLog.h"
CMSWindowsHookLibraryLoader::CMSWindowsHookLibraryLoader() :
m_init(NULL),
m_cleanup(NULL),
m_setSides(NULL),
m_setZone(NULL),
m_setMode(NULL),
m_getDraggingFileDir(NULL)
{
}
CMSWindowsHookLibraryLoader::~CMSWindowsHookLibraryLoader()
{
// TODO: take ownership of m_ and delete them.
}
HINSTANCE
CMSWindowsHookLibraryLoader::openHookLibrary(const char* name)
{
// load the hook library
HINSTANCE hookLibrary = LoadLibrary(name);
if (hookLibrary == NULL) {
LOG((CLOG_ERR "failed to load hook library, %s.dll is missing or invalid", name));
throw XScreenOpenFailure();
}
// look up functions
m_setSides = (SetSidesFunc)GetProcAddress(hookLibrary, "setSides");
m_setZone = (SetZoneFunc)GetProcAddress(hookLibrary, "setZone");
m_setMode = (SetModeFunc)GetProcAddress(hookLibrary, "setMode");
m_init = (InitFunc)GetProcAddress(hookLibrary, "init");
m_cleanup = (CleanupFunc)GetProcAddress(hookLibrary, "cleanup");
if (m_setSides == NULL ||
m_setZone == NULL ||
m_setMode == NULL ||
m_init == NULL ||
m_cleanup == NULL) {
LOG((CLOG_ERR "invalid hook library, use a newer %s.dll", name));
throw XScreenOpenFailure();
}
// initialize hook library
if (m_init(GetCurrentThreadId()) == 0) {
LOG((CLOG_ERR "failed to init %s.dll, another program may be using it", name));
LOG((CLOG_INFO "restarting your computer may solve this error"));
throw XScreenOpenFailure();
}
return hookLibrary;
}
HINSTANCE
CMSWindowsHookLibraryLoader::openShellLibrary(const char* name)
{
// load the hook library
HINSTANCE shellLibrary = LoadLibrary(name);
if (shellLibrary == NULL) {
LOG((CLOG_ERR "failed to load shell library, %s.dll is missing or invalid", name));
throw XScreenOpenFailure();
}
// look up functions
m_getDraggingFileDir = (GetDraggingFileDir)GetProcAddress(shellLibrary, "getDraggingFileDir");
if (m_getDraggingFileDir == NULL) {
LOG((CLOG_ERR "invalid shell library, use a newer %s.dll", name));
throw XScreenOpenFailure();
}
return shellLibrary;
}