moving 1.4 to trunk

src/lib/platform/CMSWindowsHookLibraryLoader.cpp

@@ -0,0 +1,69 @@
+/*
+ * synergy -- mouse and keyboard sharing utility
+ * Copyright (C) 2011 Chris Schoeneman, Nick Bolton, Sorin Sbarnea
+ * 
+ * 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)
+{
+}
+
+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", 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;
+}