LogicLib - UserIsAdmin

Author: Zinthose (talk, contrib)

Library to extend the LogicLib library to allow for testing if the current security context is has Administrative rights.

This code is based on the IsUserAdmin macros done by Lilla.

; ----------------------------
;       LogicLib_Ext.nsh
; ----------------------------
;
; Library to extend the 'LogicLib' library's existing functions.
;
 
 
!ifndef ___LOGICLIB_EXT__NSH___
!define ___LOGICLIB_EXT__NSH___
 
!include 'LogicLib.nsh'
 
; -----------------------
;       UserIsAdmin
; -----------------------
;
;   Example:
;       ${If} ${UserIsAdmin}
;           DetailPrint "Current user security context has local administrative rights."
;       ${Else}
;           DetailPrint "Current user security context dose NOT have local administrative rights."
;       ${EndIf}
;
    !macro _UserIsAdmin _a _b _t _f
        System::Store 'p0 p1 p2 p3'
        System::Call '*(&i1 0,&i4 0,&i1 5)i.r0'
        System::Call 'advapi32::AllocateAndInitializeSid(i r0,i 2,i 32,i 544,i 0,i 0,i 0,i 0,i 0,i 0,*i .r1)i.r2'
        System::Free $0
        System::Call 'advapi32::CheckTokenMembership(i n,i r1,*i .r2)i.r3'
        System::Call 'advapi32::FreeSid(i r1)i.r2'
 
        StrCmp $3 0 0 +4
        ## User is an Admin
            System::Store 'r0 r1 r2 r3'
            Goto `${_f}`
 
        ## User is not an Admin
            System::Store 'r0 r1 r2 r3'
            Goto `${_t}`
 
    !macroend
    !define UserIsAdmin `"" UserIsAdmin ""`
 
!endif