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|
#! /bin/sh
# postrm script for netenv
#
# see: dh_installdeb(1)
set -e
# summary of how this script can be called:
# * <postrm> `remove'
# * <postrm> `purge'
# * <old-postrm> `upgrade' <new-version>
# * <new-postrm> `failed-upgrade' <old-version>
# * <new-postrm> `abort-install'
# * <new-postrm> `abort-install' <old-version>
# * <new-postrm> `abort-upgrade' <old-version>
# * <disappearer's-postrm> `disappear' <r>overwrit>r> <new-version>
# for details, see http://www.debian.org/doc/debian-policy/ or
# the debian-policy package
. /usr/share/debconf/confmodule
# function defining
restore_false_links(){
if [ X`readlink /etc/resolv.conf` = X/etc/resolv.conf.netenv_default ]; then
if [ ! -r `readlink /etc/resolv.conf` ]; then
# is the old file still there?
if [ -f /etc/resolv.conf.netenv-default ]; then
rm /etc/resolv.conf
mv /etc/resolv.conf.netenv-default /etc/resolv.conf
echo "Netenv: Restored old resolv.conf (Bug #225582)."
else
echo "Problems cleaning up wrong links for resolv.conf (Bug #225582)."
echo "Correct removal or purge of netenv might require manual action"
fi
fi
fi
if [ X`readlink /etc/network/interfaces` = X/etc/network/interfaces.netenv_default ]; then
if [ ! -r `readlink /etc/network/interfaces` ]; then
# is the old file still there?
if [ -f /etc/network/interfaces.netenv-default ]; then
rm /etc/network/interfaces
mv /etc/network/interfaces.netenv-default /etc/network/interfaces
echo "Netenv: Restored old interfaces (Bug #225582)."
else
echo "Problems cleaning up wrong links for interfaces (Bug #225582)."
echo "Correct removal or purge of netenv might require manual action"
fi
fi
fi
BAD_SCRIPT=/etc/netenv/setup-default
if grep netenv_default $BAD_SCRIPT >/dev/null 2>&1; then
sed -e 's/netenv_default/netenv-default/g' < $BAD_SCRIPT >${BAD_SCRIPT}.tmp
rm $BAD_SCRIPT
mv ${BAD_SCRIPT}.tmp $BAD_SCRIPT
echo "Netenv: Corrected buggy setup-default file (Bug #225582)."
fi
}
remove_netenvlinks(){
oldpwd=`pwd`
cd /etc
echo
if [ -L resolv.conf ]; then
target=`readlink resolv.conf`
rm resolv.conf
mv $target resolv.conf && rm -f resolv.conf.netenv-old resolv.conf.netenv-default
echo "Restoring static network configuration:"
echo "Using $target for /etc/resolv.conf"
echo "Please check that you really want this configuration!"
fi
cd network
if [ -L interfaces ]; then
target=`readlink interfaces`
rm interfaces
mv $target interfaces && rm -f interfaces.netenv-old interfaces.netenv-default
echo "Restoring static network configuration:"
echo "Using $target for /etc/network/interfaces"
echo "Please check that you really want this configuration!"
fi
echo
cd $oldpwd
}
restore_configuration(){
db_get netenv/auto_configure
case "$RET" in
"Use current settings")
db_get netenv/auto_method
case "$RET" in
pcmcia)
echo "If you followed the instructions in the netenv documentation,"
echo "remember to restore the changes you made to /etc/pcmcia/network.opts" ;;
interfaces)
if [ "$1" = "purge" ];then remove_netenvlinks; fi ;;
esac
;;
*)
;;
esac
}
# start the actual work:
case "$1" in
remove|upgrade|failed-upgrade|abort-install|abort-upgrade|disappear)
# clean up for bug #225582 in version 0.94.3-1 (and probably older)
restore_false_links
# normal cleanup
restore_configuration "$1"
;;
purge)
# clean up for bug #225582 in version 0.94.3-1 (and probably older)
restore_false_links
# normal cleanup
restore_configuration "$1"
# We purge the configuration files that we created. However, we deliberately
# do _not_ reconstruct /etc/resolv.conf and /etc/network/interfaces from the
# safed files (*.netenv-old). This is because the settings in there might no
# longer be valid and changes made only in the files used by netenv. This
# cannot be sorted out without knowing correct network parameters - therefore
# it is left to the user.
NODE=`uname -n`
CONFIGURATION_FILES="/etc/netenv/${NODE} /etc/netenv/setup-default"
rm -f $CONFIGURATION_FILES
CONFDIR=/etc/netenv/
# remove confdir if there are no user files left. If the user nuked the files
# before, the dir will have been removed by dpkg.
if [ -d $CONFDIR ]; then
[ $(find "$CONFDIR" | wc -l) -eq 1 ] && { rmdir $CONFDIR; echo "Removed empty directory $CONFDIR"; };
fi
# now remove the defaultitem file
rm -f /var/cache/netenv/defaultitem
;;
*)
echo "postrm called with unknown argument \`$1'" >&2
exit 1
esac
# dh_installdeb will replace this with shell code automatically
# generated by other debhelper scripts.
#DEBHELPER#
exit 0
|
