nattpatch

This a good VPN source

#!/bin/sh

# wander through a FreeSWAN linux directory, creating a patch file (to stdout)
# that will apply the code to a kernel source directory.
#
# $Id: nattpatch,v 1.1 2004/01/06 05:21:19 mcr Exp $
#

KERN=$1
shift

case $KERN in
    2.0) patchname=fs2_0;;
    2.2) patchname=fs2_2;;
    2.4) patchname=fs2_4;;
    2.5) patchname=fs2_5;;
    *) echo "Invalid kernel patch target: $KERN"; exit 1;;
esac

# make sure that sort gets the right locale.
LANG=C export LANG
LC_ALL=C export LC_ALL


find nat-t -type f -print | grep -v CVS | egrep -v 'linux/Makefile' | sort | while read file 
do 
  base=`basename $file`
  case $base in 
    TAGS) ;;
    tags) ;;
    .cvsignore) ;;
    .*.o.flags) ;;
    .\#*);;
    *.o) ;;
    *~) ;;
    tagsfile.mak) ;;
    *.$patchname.patch) cat $file;;
    *.patch) ;;
    *) diff -u /dev/null $file;;
  esac
done

exit 0