1 files changed, 62 insertions, 0 deletions
diff --git a/win/inspircd.nsi b/win/inspircd.nsi
index 16c6dcd3e..25b97cd92 100644
--- a/win/inspircd.nsi
+++ b/win/inspircd.nsi
@@ -8,6 +8,8 @@
 !define PRODUCT_DIR_REGKEY "Software\Microsoft\Windows\CurrentVersion\App Paths\inspircd.exe"
 !define PRODUCT_UNINST_KEY "Software\Microsoft\Windows\CurrentVersion\Uninstall\${PRODUCT_NAME}"
 !define PRODUCT_UNINST_ROOT_KEY "HKLM"
+!define DOT_MAJOR "2"
+!define DOT_MINOR "0"
 
 SetCompressor bzip2
 
@@ -53,7 +55,67 @@ InstallDirRegKey HKLM "${PRODUCT_DIR_REGKEY}" ""
 ShowInstDetails show
 ShowUnInstDetails show
 
+Function IsDotNetInstalled
+ 
+  StrCpy $0 "0"
+  StrCpy $1 "SOFTWARE\Microsoft\.NETFramework" ;registry entry to look in.
+  StrCpy $2 0
+ 
+  StartEnum:
+    ;Enumerate the versions installed.
+    EnumRegKey $3 HKLM "$1\policy" $2
+    
+    ;If we don't find any versions installed, it's not here.
+    StrCmp $3 "" noDotNet notEmpty
+    
+    ;We found something.
+    notEmpty:
+      ;Find out if the RegKey starts with 'v'.  
+      ;If it doesn't, goto the next key.
+      StrCpy $4 $3 1 0
+      StrCmp $4 "v" +1 goNext
+      StrCpy $4 $3 1 1
+      
+      ;It starts with 'v'.  Now check to see how the installed major version
+      ;relates to our required major version.
+      ;If it's equal check the minor version, if it's greater, 
+      ;we found a good RegKey.
+      IntCmp $4 ${DOT_MAJOR} +1 goNext yesDotNetReg
+      ;Check the minor version.  If it's equal or greater to our requested 
+      ;version then we're good.
+      StrCpy $4 $3 1 3
+      IntCmp $4 ${DOT_MINOR} yesDotNetReg goNext yesDotNetReg
+ 
+    goNext:
+      ;Go to the next RegKey.
+      IntOp $2 $2 + 1
+      goto StartEnum
+ 
+  yesDotNetReg:
+    ;Now that we've found a good RegKey, let's make sure it's actually
+    ;installed by getting the install path and checking to see if the 
+    ;mscorlib.dll exists.
+    EnumRegValue $2 HKLM "$1\policy\$3" 0
+    ;$2 should equal whatever comes after the major and minor versions 
+    ;(ie, v1.1.4322)
+    StrCmp $2 "" noDotNet
+    ReadRegStr $4 HKLM $1 "InstallRoot"
+    ;Hopefully the install root isn't empty.
+    StrCmp $4 "" noDotNet
+    ;build the actuall directory path to mscorlib.dll.
+    StrCpy $4 "$4$3.$2\mscorlib.dll"
+    IfFileExists $4 yesDotNet noDotNet
+ 
+  noDotNet:
+    MessageBox MB_OK "You do not have have v${DOT_MAJOR}.${DOT_MINOR} or greater of the .NET framework installed. This is required for the InspIRCd Monitor, however you can still launch the IRCd manually."
+ 
+  yesDotNet:
+    ;Everything checks out.  Go on with the rest of the installation.
+    
+FunctionEnd
+
 Section "Binary Executable" SEC01
+  Call IsDotNetInstalled
   SetOutPath "$INSTDIR"
   SetOverwrite ifnewer
   File "..\bin\debug\InspGUI.exe"