Installation with registry keys

src/plugin/Plugin.cpp

 #include "PluginStdAfx.h"
 
 #include "Plugin.h"
 #ifdef _WIN64
 #include "../../build/x64/AdblockPlus_i.c"
 #else
 #include "../../build/ia32/AdblockPlus_i.c"
 #endif
 
 #include "PluginClass.h"
 #include "PluginClient.h"
 #include "PluginSystem.h"
 #include "PluginSettings.h"
 #include "PluginMimeFilterClient.h"
 #include "Msiquery.h"
+#include "../shared/Utils.h"
 
 #ifdef SUPPORT_FILTER
 #include "PluginFilter.h"
 #endif
 #ifdef SUPPORT_CONFIG
 #include "PluginConfig.h"
 #endif
 
 #include "../shared/Dictionary.h"
 
@@ skipping 11 matching lines @@
   case DLL_PROCESS_ATTACH:
     TCHAR szFilename[MAX_PATH];
     GetModuleFileName(NULL, szFilename, MAX_PATH);
     _tcslwr_s(szFilename);
 
     if (_tcsstr(szFilename, _T("explorer.exe")))
     {
       return FALSE;
     }
 
+    /*
+     * Do a quick validation of the installation.
+     */
+    if ( ! Location::all_known() ){
+      return FALSE;
+      /*
+       * Future: Write an event to the Windows log file about failure to load.
+       */
+    }
+
+
     _Module.Init(ObjectMap, _Module.GetModuleInstance(), &LIBID_PluginLib);
     break;
 
   case DLL_THREAD_ATTACH:
     // thread-specific initialization.
     break;
 
   case DLL_THREAD_DETACH:
     // thread-specific cleanup.
     break;
@@ skipping 82 matching lines @@
 EXTERN_C void STDAPICALLTYPE OnInstall(MSIHANDLE hInstall, MSIHANDLE tmp)
 {
   InitPlugin(true);
 }
 
 // Called from updater
 EXTERN_C void STDAPICALLTYPE OnUpdate(void)
 {
   InitPlugin(false);
 }