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tier0/security_linux.cpp

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: Platform level security functions.
+//
+// $NoKeywords: $
+//=============================================================================//
+
+// Uncomment the following line to require the prescence of a hardware key.
+//#define REQUIRE_HARDWARE_KEY
+// NOTE - this DOESN'T work under linux!!!!
+
+
+#include "tier0/platform.h"
+#include "tier0/vcrmode.h"
+#include "tier0/memalloc.h"
+
+
+#ifdef REQUIRE_HARDWARE_KEY
+
+	#define VALVE_DESKEY_ID "uW"	// Uniquely identifies HL2 keys
+
+	// Include the key's API:
+	#include "DESKey/algo.h"
+	#include "DESKey/dk2win32.h"
+	
+//	#pragma comment(lib, "DESKey/algo32.lib" )
+//	#pragma comment(lib, "DESKey/dk2win32.lib" )
+
+#endif
+
+bool Plat_VerifyHardwareKey()
+{
+	#ifdef REQUIRE_HARDWARE_KEY
+		
+		// Ensure that a key with our ID exists:
+		if( FindDK2( VALVE_DESKEY_ID, NULL ) )
+			return true;
+
+		return false;
+
+	#else
+
+		return true;
+
+	#endif
+}
+
+bool Plat_VerifyHardwareKeyDriver()
+{
+	#ifdef REQUIRE_HARDWARE_KEY
+
+		// Ensure that the driver is at least installed:
+		return DK2DriverInstalled() != 0; 
+
+	#else
+
+		return true;
+
+	#endif
+}
+
+bool Plat_VerifyHardwareKeyPrompt()
+{
+	#ifdef REQUIRE_HARDWARE_KEY
+
+		if( !DK2DriverInstalled() )
+		{
+			if( IDCANCEL == MessageBox( NULL, "No drivers detected for the hardware key, please install them and re-run the application.\n", "No Driver Detected", MB_OKCANCEL ) )
+			{
+				return false;
+			}
+
+		}
+
+		while( !Plat_VerifyHardwareKey() )
+		{
+			if( IDCANCEL == MessageBox( NULL, "Please insert the hardware key and hit 'ok'.\n", "Insert Hardware Key", MB_OKCANCEL ) )
+			{
+				return false;
+			}
+
+			for( int i=0; i < 2; i++ )
+			{
+				// Is the key in now?
+				if( Plat_VerifyHardwareKey() )
+				{
+					return true;
+				}
+
+				// Sleep 2 / 3 of a second before trying again, in case the os recognizes the key slightly after it's being inserted:
+				Sleep(666);
+			}
+		}
+
+		return true;
+	
+	#else
+
+		return true;
+
+	#endif
+}
+
+bool Plat_FastVerifyHardwareKey()
+{
+	#ifdef REQUIRE_HARDWARE_KEY
+
+		static int nIterations = 0;
+		
+		nIterations++;
+		if( nIterations > 100 )
+		{
+			nIterations = 0;
+			return Plat_VerifyHardwareKey();
+		}
+
+		return true;
+
+	#else
+
+		return true;
+
+	#endif
+}
+