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#!/bin/sh
set -e
pathfind() {
OLDIFS="$IFS"
IFS=:
for p in $PATH; do
if [ -x "$p/$*" ]; then
IFS="$OLDIFS"
return 0
fi
done
IFS="$OLDIFS"
return 1
}
remove_gns() {
# abort if /etc/nsswitch.conf does not exist
if ! [ -e /etc/nsswitch.conf ]; then
return
fi
perl -i -pe '
my @remove=(
"gns [NOTFOUND=return]",
);
sub remove {
my $s=shift;
foreach my $bit (@remove) {
$s=~s/\s+\Q$bit\E//g;
}
return $s;
}
s/^(hosts:)(.*)/$1.remove($2)/e;
' /etc/nsswitch.conf
}
case "${1}" in
purge)
if [ -e /usr/share/debconf/confmodule ]
then
. /usr/share/debconf/confmodule
db_version 2.0
db_get gnunet-systempeer/username
_USERNAME="${RET:-gnunet}"
db_get gnunet-systempeer/groupname
_GROUPNAME="${RET:-gnunet}"
db_get gnunet-dns/libnsswitch
_LIBNSSWITCH="${RET}"
else
_USERNAME="gnunet"
_GROUPNAME="gnunet"
fi
GNUNETDNS_GROUP="gnunetdns"
if $_LIBNSSWITCH
then
rm -rf /usr/lib/x86_64-linux-gnu/usr/libnss_gns.so.2
rm -rf /usr/lib/x86_64-linux-gnu/usr/libnss_gns4.so.2
rm -rf /usr/lib/x86_64-linux-gnu/usr/libnss_gns6.so.2
remove_gns
fi
if pathfind deluser
then
deluser --quiet --system ${_USERNAME} || true
fi
if pathfind delgroup
then
delgroup --quiet --system --only-if-empty ${_GROUPNAME} || true
delgroup --quiet --system --only-if-empty ${GNUNETDNS_GROUP} || true
fi
rm -rf /var/log/gnunet.log /var/lib/gnunet /etc/default/gnunet
;;
remove|upgrade|failed-upgrade|abort-install|abort-upgrade|disappear)
if $_LIBNSSWITCH
then
rm -rf /usr/lib/x86_64-linux-gnu/usr/libnss_gns.so.2
rm -rf /usr/lib/x86_64-linux-gnu/usr/libnss_gns4.so.2
rm -rf /usr/lib/x86_64-linux-gnu/usr/libnss_gns6.so.2
remove_gns
fi
;;
*)
echo "postrm called with unknown argument \`${1}'" >&2
exit 1
;;
esac
#DEBHELPER#
exit 0
|
