From a48e21ea649d7ed9adfdb4c0031f292b45bbe2a7 Mon Sep 17 00:00:00 2001
From: ccw808 <ccw808@googlemail.com>
Date: Tue, 19 Sep 2017 02:42:42 +0100
Subject: [PATCH] Added workaround for configuration issues

---
 Client/loader/MainFunctions.cpp | 11 +++++++----
 Client/loader/Utils.cpp         | 23 +++++++++++++----------
 Client/loader/Utils.h           |  1 +
 3 files changed, 21 insertions(+), 14 deletions(-)

diff --git a/Client/loader/MainFunctions.cpp b/Client/loader/MainFunctions.cpp
index d57467d6b4..06c16a63fa 100644
--- a/Client/loader/MainFunctions.cpp
+++ b/Client/loader/MainFunctions.cpp
@@ -1094,7 +1094,11 @@ int LaunchGame ( SString strCmdLine )
     SString strMtaDir = PathJoin( strMTASAPath, "mta" );
 
     SetDllDirectory( strMtaDir );
-    CheckService ( CHECK_SERVICE_PRE_CREATE );
+    if (!CheckService(CHECK_SERVICE_PRE_CREATE) && !IsUserAdmin())
+    {
+        RelaunchAsAdmin(strCmdLine, _("Fix configuration issue"));
+        ExitProcess(EXIT_OK);
+    }
 
     // Do some D3D things
     BeginD3DStuff();
@@ -1143,9 +1147,8 @@ int LaunchGame ( SString strCmdLine )
         if ( dwError == ERROR_ELEVATION_REQUIRED && !bDoneAdmin )
         {
             // Try to relaunch as admin if not done so already
-            ReleaseSingleInstanceMutex ();
-            ShellExecuteNonBlocking( "runas", PathJoin ( strMTASAPath, MTA_EXE_NAME ), strCmdLine + " /done-admin" );            
-            return 5;
+            RelaunchAsAdmin(strCmdLine + " /done-admin", _("Fix elevation required error"));
+            ExitProcess(EXIT_OK);
         }
         else
         {
diff --git a/Client/loader/Utils.cpp b/Client/loader/Utils.cpp
index 661c057093..eb39a66815 100644
--- a/Client/loader/Utils.cpp
+++ b/Client/loader/Utils.cpp
@@ -1250,17 +1250,20 @@ Return Value:
 }
 
 
-static SString HashBuffer ( char* pData, uint uiLength )
+//////////////////////////////////////////////////////////
+//
+// RelaunchAsAdmin
+//
+// Relaunch as admin if user agrees
+//
+//////////////////////////////////////////////////////////
+void RelaunchAsAdmin(const SString& strCmdLine, const SString& strReason)
 {
-    DWORD dwSum1 = 0;
-    DWORD dwSum2 = 0x1234;
-    for ( uint i = 0 ; i < uiLength ; i++ )
-    {
-        dwSum1 += pData[i];
-        dwSum2 += pData[i];
-        dwSum2 ^= ( dwSum2 << 2 ) + 0x93;
-    }
-    return SString ( "%08x%08x%08x", dwSum1, dwSum2, uiLength );
+    HideSplash();
+    AddReportLog(7115, SString("Loader - Request to elevate privilages (%s)", *strReason));
+    MessageBoxUTF8(NULL, SString ( _("MTA:SA needs Administrator access for the following task:\n\n  '%s'\n\nPlease confirm in the next window."), *strReason), "Multi Theft Auto: San Andreas", MB_OK | MB_ICONINFORMATION | MB_TOPMOST);
+    ReleaseSingleInstanceMutex();
+    ShellExecuteNonBlocking("runas", PathJoin(GetMTASAPath(), MTA_EXE_NAME), strCmdLine);            
 }
 
 
diff --git a/Client/loader/Utils.h b/Client/loader/Utils.h
index 1963d86bc7..42b92689c9 100644
--- a/Client/loader/Utils.h
+++ b/Client/loader/Utils.h
@@ -96,6 +96,7 @@ bool            IsWindows10OrGreater                ( void );
 bool            IsWindows10Threshold2OrGreater      ( void );
 
 BOOL            IsUserAdmin                         ( void );
+void            RelaunchAsAdmin                     (const SString& strCmdLine, const SString& strReason);
 
 void            UpdateMTAVersionApplicationSetting  ( bool bQuiet = false );
 bool            Is32bitProcess                      ( DWORD processID );