#!/bin/sh

set -e

export LANG=C
STATEDIR=/org/www.debian.or.jp/var/lib/www.debian.or.jp
DSA_URL=https://www.debian.org/security/dsa
RSS_URL='http://localhost/blog/index.cgi/index.rss?recache=all'
do_update=false

if [ "$(whoami)" != "wwwadm" ]; then
  exec sudo -u wwwadm -H $0
fi

P=$(pwd)
cd $STATEDIR

if wget -m $DSA_URL 2>&1 | grep -q 'Downloaded:'; then
  nkf -e www.debian.org/security/dsa | sed -e "s/utf\-8/x-euc-jp-unicode/" > dsa.ja.euc-jp
  do_update=true
fi

if wget -q --header='Host: www.debian.or.jp' -O index.rss $RSS_URL; then
  sed -e "s/EUC-JP/x-euc-jp-unicode/" -e "s/index.cgi\///g" < index.rss > news.rss
  if ! diff -q news.rss.old news.rss > /dev/null; then
    cp news.rss news.rss.old
    do_update=true
  fi
fi

if $do_update; then
  cd $P
  ttree index.tt2
fi