Nullsoft script to create an installer for a rsync Windows Service package based on cygwin

rsync-server-gist.nsi

;NSIS Modern User Interface
;Rsync Windows Service Script
;Written by Umberto Nicoletti http://unicolet.blogspot.com/

!define SCRIPT_VERSION    "1.0"

;--------------------------------
;Include Modern UI

  !include "MUI2.nsh"

;--------------------------------
;General

  ;Name and file
  Name "Rsync Service"
  OutFile "rsync_svc.exe"

  ;Default installation folder
  InstallDir "C:\cygwin"
  
  ;Get installation folder from registry if available
  InstallDirRegKey HKCU "Software\gnu_rsync" "rsync_svc"

  ;Request application privileges for Windows Vista
  RequestExecutionLevel admin

;--------------------------------
;Interface Settings

  !define MUI_ABORTWARNING

;--------------------------------
;Pages
  !define MUI_WELCOMEPAGE_TITLE "Rsync Service"
  !define MUI_WELCOMEPAGE_TITLE_3LINES ""
  !define MUI_WELCOMEPAGE_TEXT "Welcome to the setup for rsync."
  !define MUI_FINISHPAGE_TITLE "Rsync Service"
  !define MUI_FINISHPAGE_TEXT "You have successfully completed the installation."
  
  !insertmacro MUI_PAGE_WELCOME
  page custom CustomCreate

;  !insertmacro MUI_PAGE_LICENSE "${NSISDIR}\Docs\Modern UI\License.txt"
  !insertmacro MUI_PAGE_COMPONENTS
  !insertmacro MUI_PAGE_DIRECTORY
  !insertmacro MUI_PAGE_INSTFILES
  !insertmacro MUI_PAGE_FINISH

  !insertmacro MUI_UNPAGE_WELCOME  
  !insertmacro MUI_UNPAGE_CONFIRM
  !insertmacro MUI_UNPAGE_INSTFILES
  !define MUI_FINISHPAGE_TEXT "The application has been removed from the system."
  !insertmacro MUI_UNPAGE_FINISH

;--------------------------------
;Languages
 
  !insertmacro MUI_LANGUAGE "English"
  
;--------------------------------
;Installer Sections

Section "Install packages section." SecInstallPkgs

  SetOutPath "$INSTDIR"
  
  ;ADD YOUR OWN FILES HERE...
  File /r "cygwin\*.*"
  
  ;Store installation folder
  WriteRegStr HKCU "Software\gnu_rsync" "rsync_svc" $INSTDIR
  
  ;Create uninstaller
  WriteUninstaller "$INSTDIR\Uninstall_rsync_svc.exe"
  
  ;
  ; Create the bat to automate service installation/uninstallation
  ; Remember that the /etc/rsyncd.conf must exist and must be correct
  ; to be able to start the service.
  ; For an example see: http://unicolet.blogspot.com/2012/01/rsync-or-any-other-cygwin-daemon-as.html
  ;
  ReadEnvStr $4 COMSPEC
  nsExec::ExecToLog   '$4 /c "$INSTDIR\service_install.bat" $INSTDIR'
SectionEnd

;--------------------------------
;Descriptions

  ;Language strings
  LangString DESC_SecInstallPkgs ${LANG_ENGLISH} "Install packages section."

  ;Assign language strings to sections
  !insertmacro MUI_FUNCTION_DESCRIPTION_BEGIN
  !insertmacro MUI_DESCRIPTION_TEXT ${SecInstallPkgs} $(DESC_SecInstallPkgs)
  !insertmacro MUI_FUNCTION_DESCRIPTION_END


;--------------------------------
;Uninstaller Section

Section "Uninstall"

  ;
  ; Create the bat to automate service installation/uninstallation
  ; For an example see: http://unicolet.blogspot.com/2012/01/rsync-or-any-other-cygwin-daemon-as.html
  ;
  ReadEnvStr $4 COMSPEC
  nsExec::ExecToLog   '$4 /c "$INSTDIR\service_uninstall.bat" $INSTDIR'

  ;ADD YOUR OWN FILES HERE...
  Delete "$INSTDIR\Uninstall_rsync_svc.exe"
  
  RMDir "$INSTDIR"
  
  DeleteRegKey /ifempty HKCU "Software\gnu_rsync"

SectionEnd


Function CustomCreate
   Push $1 ;park value to the stack
   InstallOptions::initDialog /NOUNLOAD '$PLUGINSDIR\alert.ini'
   Pop $1 ;get dialog HWND
   ReadINIStr $2 "$PLUGINSDIR\custom.ini" "Field 1" "HWND"
   SetCtlColors $2 0x0000FF 0xFFFFFF
   CreateFont $3 "Tahoma" 7 800
   SendMessage $2 ${WM_SETFONT} $3 0
   InstallOptions::show
   Pop $1 ;get button action
   Pop $1 ;get custom.ini full path
   Pop $1 ;get back value from stack
FunctionEnd 

Function .onInit
   initpluginsdir
   #file /oname=$PLUGINSDIR\alert.ini alert.ini
FunctionEnd