Fully Qualified Domain Name

About

The following function was inspired from the forum post at: http://forums.winamp.com/showthread.php?t=323936

Technically you can get the FQDN using several methods.

Registry Read Method

Use with caution, This method is prone to GIGO and some of the source keys might not be optimal for collecting the information.

Example

Section "Registry Method"
    Call regGetFQDN
    Pop $0
    DetailPrint "FQDN: $0"
SectionEnd

Source

Function regGetFQDN
    Push $0
    Push $1
 
    SetRegView 64
 
    ## Possible system domain Name locations
    ## TODO Adjust order for locations that are most likley to be correct.
        ReadRegStr $1 HKLM "SYSTEM\CurrentControlSet\Services\Tcpip\Parameters"               \
            "Domain"
        StrCmp $1 "" 0 GetHostName
        ReadRegStr $1 HKLM "SOFTWARE\Microsoft\Windows\CurrentVersion\Group Policy\History"   \
            "NetworkName"
        StrCmp $1 "" 0 GetHostName
        ReadRegStr $1 HKLM "SOFTWARE\Microsoft\Windows\CurrentVersion\Telephony"              \
            "DomainName"
        StrCmp $1 "" 0 GetHostName
        ReadRegStr $1 HKLM "SOFTWARE\Microsoft\MSMQ\Parameters\setup"                         \
            "MachineDomainFQDN"
 
    GetHostName:
    ## Possible Registry Hostname locations
        ReadRegStr $0 HKLM "SYSTEM\CurrentControlSet\Control\ComputerName\ActiveComputerName" \
            "ComputerName"
        StrCmp $0 "" 0 FQDNDone
        ReadRegStr $0 HKLM "SYSTEM\CurrentControlSet\Control\ComputerName\ComputerName"       \
            "ComputerName"
        StrCmp $0 "" 0 FQDNDone
        ReadRegStr $1 HKLM "SYSTEM\CurrentControlSet\Services\Tcpip\Parameters"               \
            "Hostname"
        StrCmp $0 "" 0 FQDNDone
 
    FQDNDone:
        StrCmp $1 "" +2
        StrCpy $0 "$0.$1"
 
    SetRegView lastused 
 
    Pop $1
    Exch $0
FunctionEnd

GetNetworkParams Win32 API

Example

;/* Example *
    ## Install
        Section test
            ${GetFQDN} $0
            DetailPrint "GetFQDN: $0"
            WriteUninstaller "$EXEDIR\uninstaller.exe"
        SectionEnd
 
    ## Uninstall Code
        ${GetFQDN} UNINSTALL
        Section un.test
            ${GetFQDN} $0
            DetailPrint "un.GetFQDN: $0"
        SectionEnd
;*/

Source

!ifndef GetFQDN
    !verbose push
    !verbose 3
    !ifmacrondef _GetFQDN
        !define GetFQDN "!insertmacro _GetFQDN"
        !macro _InsertFunction_GetFQDN _U_
            Function ${_U_}GetFQDN
                ## This Function uses the GetNetworkParams Win32 API function.
                ##    Additional details are available at:
                ##    http://msdn.microsoft.com/en-us/library/aa365968%28VS.85%29.aspx
                ClearErrors
 
                Push $1
                Push $0
                Push $2
 
                ## Get the required buffer size
                    System::Call "*(&i4 0)i .r0"
                    System::Call 'Iphlpapi::GetNetworkParams(i 0, i r0)i.r1'
                    StrCmp $1 111 BufferOkay
                        SetErrors
                        StrCpy $1 ""
                        Goto CleanUp_End
                    BufferOkay:
 
                ## Allocate Buffer
                    System::Call '*$0(i .r1)'
                    System::Alloc $1
                    Pop $2
 
                ## Populate Buffer with Data
                    System::Call 'Iphlpapi::GetNetworkParams(i $2, *i $1)i.r1'
                    StrCmp $1 0 DataOkay
                        SetErrors
                        StrCpy $1 ""
                        Goto CleanUp
                    DataOkay:
 
                ## Success, lets build the FQDN from the data
                    System::Call '*$2(&t132 .r3,&t132 .r4)'
                    StrCpy $1 "$3.$4"
 
                CleanUp:
                    System::Free $2
                CleanUp_End:
                    System::Free $0
                    Pop $2
                    Pop $0
                    Exch $1
            FunctionEnd
        !macroend
        !insertmacro _InsertFunction_GetFQDN ""
        !macro _GetFQDN _RetVar
            !verbose Push
            !verbose 3
            !ifdef __GLOBAL__
                !if `${_RetVar}` == "UNINSTALL"
                    !ifndef "un.GetFQDN"
                        !insertmacro _InsertFunction_GetFQDN "un."
                        !define "un.GetFQDN" "${GetFQDN}"
                    !endif
                !else
                    !undef GetFQDN
                    !error "Syntax Error: ${GetFQDN} ${_RetVar}"
                !endif
            !else
                !ifdef __UNINSTALL__
                    !ifndef un.GetFQDN
                        !undef GetFQDN
                        !error 'Oops! You need to enable the GetFQDN uninstaller function in the global scope using: "${GetFQDN} UNINSTALL"'
                    !endif
                    Call un.GetFQDN
                !else
                    Call GetFQDN
                !endif
                !if ${_RetVar} != s
                    Pop ${_RetVar}
                !endif
            !endif
            !verbose Pop
        !macroend
    !endif
    !verbose Pop
!endif