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|
#!/bin/sh -e
# A script to rebuild the newsfeed file after a gup run
gup=/var/lib/gup
# who gets mail
news_admin=news
# altered sites beautification
pr="pr -5 -a -t -o5"
# your INN newsfeeds file. this file is automatically updated by this script
# by combining the feeds lists for all the sites that gup controls, along
# with a general-purpose header and trailer for the file as a whole.
newsfeeds=/etc/news/newsfeeds
# your INN control program, ctlinnd
ctlinnd="ctlinnd -t 20"
# default path
export PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
# you can use this file to override the default paths
if [ -f /etc/gup.paths ]; then
. /etc/gup.paths
fi
########################### end of user-config stuff ##########################
cd $gup
# don't run the script if gup is not configured
if [ ! -f default/global.header ]; then
exit 0
fi
update_stamp="/var/spool/news/.gup-last-update"
tmpfeeds="$newsfeeds-tmp.$$"
reload_thresh=10
# determine what's changed since last time - to save inn from reloading the
# entire newsfeeds file, and us from wasting our time.
if [ "$1" = "force" ]; then
echo "full update forced"
touch $update_stamp
first_update=1
elif [ ! -f $update_stamp ]; then
echo "$update_stamp doesn't exist - creating"
touch $update_stamp
first_update=1 # this must be our first time
else
# decide what's changed, if anything
touch ${update_stamp}.new # prevent anything sneaking in
haltered=`find default/global.header -follow -newer $update_stamp`
altered=`find sites/ -type f -name groups -newer $update_stamp -print |
sed -e 's#.*sites/##' -e 's#/groups##'`
if [ -z "$altered" -a -z "$haltered" ]; then
rm -f ${update_stamp}.new
exit 0
fi
mv -f ${update_stamp}.new ${update_stamp}
first_update=0
fi
{
# global header
cat default/global.header
cd sites
for h in *; do
if [ -s $h/groups ]; then
echo
# header
host=$h
if [ -s $h/aliases ]; then
read aliases junk < $h/aliases
host="$host\/$aliases"
fi
sed -e "s/HOST/$host/g" $h/header
# body
sed -e 's/$/,\\/g' -e 's/^/ /g' $h/groups
# trailer
sed -e "s/HOST/$h/g" $h/trailer
fi
done
cd ..
# global trailer
if [ -s default/global.trailer ]; then
cat default/global.trailer
fi
} > $tmpfeeds
# commit the new version
mv -f $newsfeeds.old $newsfeeds.old1 || true
mv -f $newsfeeds $newsfeeds.old
mv $tmpfeeds $newsfeeds
# verify that it's ok
set +e
$ctlinnd -s checkfile
ok=$?
set -e
if [ $ok -eq 0 ]; then
echo "${newsfeeds}: verification succeeded"
echo
else
echo "argh! $newsfeeds verification failed - moving back previous version"
mv $newsfeeds $newsfeeds.broken
mv -f $newsfeeds.old $newsfeeds || true
/usr/sbin/sendmail -t <<SIGH
To: $news_admin
Subject: gup newsfeeds failure!
gup has gone weird - the generated newsfeeds file has been rejected by
$verify. Please check:
$newsfeeds.broken
to determine the source of the problem.
yours in efficiency,
the gupdate daemon
SIGH
# force a complete reload next time
rm -f ${update_stamp}
exit 1
fi
# tell INN about it
# inn newsfeed reloads are expensive, particularly for channels - only
# reload what is necessary, except if there are more than ${reload_thresh}
# sites that need dealing with.
set +e
if [ $first_update -eq 1 -o -n "$haltered" ]; then
echo "full update: ctlinnd reload newsfeeds"
$ctlinnd reload newsfeeds gupdate
else
echo "sites altered:"
echo $altered | $pr
echo
if [ `echo $altered | wc -w | awk '{print $1}'` -le $reload_thresh ]; then
for site in $altered; do
if [ -s sites/$site/groups ]; then
echo "$site: ctlinnd begin $site"
$ctlinnd begin $site
else
echo "$site: ctlinnd drop $site"
$ctlinnd drop $site
fi
echo
done
else
echo "ctlinnd reload newsfeeds"
$ctlinnd reload newsfeeds gupdate
fi
fi
exit 0
|
