#!/bin/sh

# simplistic: if dates don't match, download

for TARBALL in elfhacks packetstream glc ; do
  RDATE=$(date -d "$(curl -I http://nullkey.ath.cx/$TARBALL/$TARBALL.tar.gz 2> /dev/null | sed -n 's,Last-Modified: ,,p')")
  LDATE=$(date -r $TARBALL.tar.gz 2> /dev/null)

  if [ "$RDATE" != "$LDATE" ] ; then
    echo "$TARBALL is outdated/missing, updating"
    rm -f $TARBALL.tar.gz
    wget http://nullkey.ath.cx/$TARBALL/$TARBALL.tar.gz
  else
    echo "$TARBALL is current"
  fi
done