diff --git a/LICENSE b/LICENSE
new file mode 100644
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,339 @@
+             GNU GENERAL PUBLIC LICENSE
+                Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                     Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Lesser General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
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+
+  To protect your rights, we need to make restrictions that forbid
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+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have.  You must make sure that they, too, receive or can get the
+source code.  And you must show them these terms so they know their
+rights.
+
+  We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
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+
+  Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
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+
+  Finally, any free program is threatened constantly by software
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+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+             GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License.  The "Program", below,
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+language.  (Hereinafter, translation is included without limitation in
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+
+Activities other than copying, distribution and modification are not
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+running the Program is not restricted, and the output from the Program
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+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+  1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
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+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
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+
+  2. You may modify your copy or copies of the Program or any portion
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+above, provided that you also meet all of these conditions:
+
+    a) You must cause the modified files to carry prominent notices
+    stating that you changed the files and the date of any change.
+
+    b) You must cause any work that you distribute or publish, that in
+    whole or in part contains or is derived from the Program or any
+    part thereof, to be licensed as a whole at no charge to all third
+    parties under the terms of this License.
+
+    c) If the modified program normally reads commands interactively
+    when run, you must cause it, when started running for such
+    interactive use in the most ordinary way, to print or display an
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+
+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
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+
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+
+In addition, mere aggregation of another work not based on the Program
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+
+  3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
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+
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+
+  4. You may not copy, modify, sublicense, or distribute the Program
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+
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+prohibited by law if you do not accept this License.  Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+  6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
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+You are not responsible for enforcing compliance by third parties to
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+
+  7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
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+may not distribute the Program at all.  For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
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+
+It is not the purpose of this section to induce you to infringe any
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+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices.  Many people have made
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+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+  8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded.  In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+  9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation.  If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+  10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission.  For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this.  Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+                     NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+              END OF TERMS AND CONDITIONS
+
+     How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) year name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.
diff --git a/Setup.hs b/Setup.hs
new file mode 100644
--- /dev/null
+++ b/Setup.hs
@@ -0,0 +1,2 @@
+import Distribution.Simple
+main = defaultMain
diff --git a/exe/idfilepathdb.hs b/exe/idfilepathdb.hs
new file mode 100644
--- /dev/null
+++ b/exe/idfilepathdb.hs
@@ -0,0 +1,178 @@
+{-# LANGUAGE OverloadedStrings #-} 
+{-# LANGUAGE DeriveDataTypeable #-}
+{-# LANGUAGE ScopedTypeVariables #-}
+-- 
+-- uuid,md5hash,filepath map utility  
+-- 
+import           Control.Applicative ((<$>))
+import           Control.Lens
+import           Control.Monad.Trans (liftIO)
+import           Control.Monad.Trans.Either 
+import           Control.Monad.Trans.Resource
+import           Data.Attoparsec 
+import           Data.Aeson.Parser (json)
+import           Data.Aeson.Types  (parseJSON, parseEither)
+import           Data.Aeson.Encode.Pretty (encodePretty)
+import qualified Data.ByteString.Char8 as B
+import qualified Data.ByteString.Lazy as L
+import           Data.Conduit (($$+-))
+import           Data.Conduit.List (consume)
+import           Data.Data
+import qualified Data.List as DL 
+import qualified Data.Map as M
+import           Data.Monoid ((<>))
+import           Data.Digest.Pure.MD5
+import qualified Network.HTTP.Conduit as N
+import           System.Console.CmdArgs
+import           System.Directory
+import           System.FilePath
+import           System.Process
+import           System.IO (stdin)
+-- 
+import           Data.Hoodle.Simple
+import           Text.Hoodle.Parse.Attoparsec 
+-- 
+import           DiffDB
+
+data IdFilePathDB = AllFiles { hoodlehome :: FilePath }
+                  | SingleFile { hoodlehome :: FilePath 
+                               , singlefilename :: FilePath } 
+                  | DBDiff
+                  | DBSync { remoteURL :: String 
+                           , remoteID :: String 
+                           , remotePassword :: String } 
+                  deriving (Show,Data,Typeable)
+
+allfiles :: IdFilePathDB 
+allfiles = 
+  AllFiles { hoodlehome = def &= typ "HOODLEHOME" &= argPos 0 } 
+
+singlefile :: IdFilePathDB 
+singlefile = 
+  SingleFile { hoodlehome = def &= typ "HOODLEHOME" &= argPos 0 
+             , singlefilename = def &= typ "FILEPATH" &= argPos 1
+             }
+  
+dbdiff :: IdFilePathDB 
+dbdiff = DBDiff
+
+dbsync :: IdFilePathDB 
+dbsync = DBSync { remoteURL = def &= typ "URL" &= argPos 0
+                , remoteID = def &= typ "ID" &= argPos 1
+                , remotePassword = def &= typ "PASSWORD" &= argPos 2
+                }
+  
+mode :: IdFilePathDB
+mode = modes [allfiles, singlefile, dbdiff, dbsync ] 
+
+main :: IO () 
+main = do 
+  params <- cmdArgs mode
+  case params of 
+    AllFiles hdir      -> allfilework hdir 
+    SingleFile hdir fp -> singlefilework hdir fp 
+    DBDiff             -> dbdiffwork
+    DBSync url idee pw -> dbsyncwork url idee pw
+  
+allfilework :: FilePath -> IO ()
+allfilework hdir = do 
+  homedir <- getHomeDirectory 
+  r <- readProcess "find" [homedir </> "Dropbox" </> "hoodle","-name","*.hdl","-print"] "" 
+  mapM_ (singlefilework hdir) (lines r)
+
+splitfunc :: String -> (String,(String,String))
+splitfunc str = 
+  let (str1,rest1) = break (==' ') str 
+      (str2,rest2) = break (==' ') (tail rest1)
+      str3 = read (tail rest2)
+  in (str1,(str2,str3))
+
+    
+
+singlefilework :: FilePath -> FilePath -> IO ()
+singlefilework hdir oldfp = do 
+  putStrLn ("working for " ++ oldfp)
+  homedir <- getHomeDirectory 
+  tmpdir <- getTemporaryDirectory 
+  let origdbfile = homedir </> "Dropbox" </> "hoodleiddb.dat"
+      tmpfile = tmpdir </> "hoodleiddb.dat"
+  copyFile origdbfile tmpfile 
+  fp <- makeRelative hdir <$> canonicalizePath oldfp 
+  str <- readFile tmpfile 
+  let assoclst = (map splitfunc . lines) str 
+      assocmap = M.fromList assoclst 
+      replacefunc n _ = Just n 
+  muuid <- checkHoodleIdMd5 oldfp 
+  let nmap = case muuid of 
+               Nothing -> assocmap 
+               Just (uuid,md5str) -> M.alter (replacefunc (md5str,fp)) uuid assocmap
+      nstr = (unlines . map (\(x,(y,z))->x ++ " " ++ y ++ " " ++ show z) . M.toList) nmap 
+  writeFile origdbfile nstr 
+  removeFile tmpfile 
+
+checkHoodleIdMd5 :: FilePath -> IO (Maybe (String,String))
+checkHoodleIdMd5 fp = do 
+  bstr <- B.readFile fp
+  eh <- checkVersionAndGetIfHigherVersion bstr
+  case eh of 
+    Left str -> print str >> return Nothing 
+    Right h -> do
+      let idstr = B.unpack (view hoodleID h)
+          md5str = show (md5 (L.fromChunks [bstr]))
+      return (Just (idstr,md5str))
+      
+
+-- | using attoparsec without any built-in xml support 
+checkVersionAndGetIfHigherVersion :: B.ByteString -> IO (Either String Hoodle) 
+checkVersionAndGetIfHigherVersion bstr = do 
+  case parseOnly checkHoodleVersion bstr of 
+    Left str -> return (Left str )
+    Right v -> do 
+      if ( v < "0.1.9999" ) 
+        then return (Left "low version") 
+        else return (parseOnly hoodle bstr)
+
+
+dbdiffwork :: IO ()
+dbdiffwork = do 
+  homedir <- getHomeDirectory 
+  let newdbfile = homedir </> "Dropbox" </> "hoodleiddb.dat"
+      olddbfile = homedir </> "Dropbox" </> "hoodleiddb.dat.old"
+   
+  newdbstr <- readFile newdbfile 
+  olddbstr <- readFile olddbfile
+  let makedb = M.fromList . map splitfunc . lines 
+      (newdb,olddb) = (makedb newdbstr, makedb olddbstr) 
+  (L.putStrLn . encodePretty) (checkdiff olddb newdb)
+
+dbsyncwork :: String -> String -> String -> IO ()
+dbsyncwork url idee pwd = do           
+    bstr <- B.hGetContents stdin
+    request' <- N.parseUrl (url <> "/auth/page/hashdb/login")
+    let crstr = B.pack ("username=" ++ idee ++ "&password=" ++ pwd)
+        requestauth = request' 
+          { N.method = "POST" 
+          , N.requestHeaders = 
+              ("Content-Type","application/x-www-form-urlencoded") 
+              : N.requestHeaders request'   
+          , N.requestBody = N.RequestBodyBS crstr
+          } 
+    mck <- runResourceT $ N.withManager $ \manager -> do  
+             response <- N.http requestauth manager
+             return (DL.lookup "Set-Cookie" (N.responseHeaders response))
+    case mck of 
+      Nothing -> return()
+      Just ck -> do 
+        request'' <- N.parseUrl (url <> "/syncdb")
+        let requesttask = request'' 
+              { N.method = "POST"
+              , N.requestHeaders = ("Content-Type", "application/json") 
+                                   : ("Cookie",ck) 
+                                   : N.requestHeaders request''
+              , N.requestBody = N.RequestBodyBS bstr
+              }
+        runResourceT $ N.withManager $ \manager -> do  
+          response <- N.http requesttask manager
+          content <- N.responseBody response $$+- consume 
+          liftIO $ print content  
+   
diff --git a/exe/networkedit.hs b/exe/networkedit.hs
new file mode 100644
--- /dev/null
+++ b/exe/networkedit.hs
@@ -0,0 +1,66 @@
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE ScopedTypeVariables #-}
+
+import           Control.Applicative ((<$>))
+import           Control.Concurrent (threadDelay)
+import           Control.Monad (when,replicateM)
+import           Control.Monad.Loops (unfoldM) 
+import           Control.Monad.Trans
+import           Control.Monad.Trans.Maybe
+import qualified Data.Binary as Bi
+import qualified Data.ByteString.Char8 as B
+import qualified Data.ByteString.Lazy.Char8 as LB
+import           Data.Foldable as F (mapM_,forM_)
+import           Data.Maybe (catMaybes)
+import           Data.Monoid
+import           Data.Time.Clock
+-- import           Data.UUID.V4
+import           Data.Word
+import           Network.Simple.TCP 
+import           System.Directory
+import           System.FilePath
+import           System.Environment
+import           System.Process
+
+main :: IO ()
+main = do
+  [arg0,arg1] <- getArgs
+  ed <- getEnv "EDITOR"
+  connect arg0 arg1 $ \(sock, addr) -> do
+    putStrLn $ "Connection established to " ++ show addr
+    mr <- runMaybeT $ do 
+      bstr <- MaybeT (recv sock 4)
+      let getsize :: B.ByteString -> Word32 
+          getsize = Bi.decode . LB.fromChunks . return
+          size = (fromIntegral . getsize) bstr 
+          
+          go s bstr = do 
+            bstr1 <- MaybeT (recv sock s)
+            let s' = B.length bstr1 
+            if s <= s' 
+              then return (bstr <> bstr1)
+              else go (s-s') (bstr <> bstr1) 
+      go size B.empty 
+
+    F.forM_ mr $ \bstr -> do 
+      tdir <- getTemporaryDirectory
+      ctime <- getCurrentTime
+      -- uuid <- nextRandom
+      let fpath =  tdir </> show ctime <.> "txt"
+      let edws = words ed 
+          ed1 = head edws
+          eds = tail edws
+      
+      print (ed1, [eds ++ [fpath] ])
+      
+      B.writeFile fpath bstr
+      (_,_,_,h) <- createProcess (proc ed1 (eds ++ [fpath]))
+      waitForProcess h
+      --  system (ed ++  " " ++ fpath)
+      nbstr <- B.readFile fpath
+      let nbstr_size :: Word32 = (fromIntegral . B.length) nbstr
+          nbstr_size_binary = (mconcat . LB.toChunks . Bi.encode) nbstr_size
+      send sock (nbstr_size_binary <> nbstr)
+      return ()
+      
+
diff --git a/hoodle-extra.cabal b/hoodle-extra.cabal
new file mode 100644
--- /dev/null
+++ b/hoodle-extra.cabal
@@ -0,0 +1,68 @@
+Name:		hoodle-extra
+Version:	0.1
+Synopsis:	extra hoodle tools 
+Description: 	extra hoodle tools 
+Homepage:       http://ianwookim.org/hoodle
+License: 	GPL-3
+License-file:	LICENSE
+Author:		Ian-Woo Kim
+Maintainer: 	Ian-Woo Kim <ianwookim@gmail.com>
+Category:       Application
+Tested-with:    GHC == 7.6, GHC == 7.8
+Build-Type: 	Custom
+Cabal-Version:  >= 1.8
+data-files:     
+Source-repository head
+  type: git
+  location: http://www.github.com/wavewave/hoodle
+
+
+Executable networkedit
+  Main-is: networkedit.hs
+  hs-source-dirs: exe
+  ghc-options: 	-Wall -funbox-strict-fields -fno-warn-unused-do-bind -fno-warn-orphans
+  ghc-prof-options: -caf-all -auto-all
+
+  Build-Depends:   base == 4.*,
+                   binary,  
+                   bytestring,
+                   directory, 
+                   filepath,
+                   monad-loops, 
+                   mtl,
+                   network-simple, 
+                   process,
+                   time,
+                   transformers
+
+Executable idfilepathdb
+  Main-is: idfilepathdb.hs
+  hs-source-dirs: exe
+  ghc-options: 	-Wall -funbox-strict-fields -fno-warn-unused-do-bind -fno-warn-orphans
+  ghc-prof-options: -caf-all -auto-all
+
+  Build-Depends:   
+                   aeson,
+                   aeson-pretty,
+                   attoparsec,
+                   base == 4.*,
+                   base64-bytestring,
+                   bytestring,
+                   cmdargs,
+                   conduit, 
+                   containers,
+                   directory,
+                   either,
+                   filepath,
+                   http-conduit,
+                   lens,
+                   mtl,
+                   process,
+                   pureMD5,
+                   resourcet,
+                   text,
+                   transformers,
+                   unordered-containers,
+                   hoodle-types,
+                   hoodle-parser,
+                   xournal-parser
