#!/bin/sh

case "$1" in
    remove)
        test -e /etc/apache2/mods-enabled/spdy.load && a2dismod spdy
    ;;
    upgrade|deconfigure|failed-upgrade)
    ;;
    *)
        echo "prerm called with unknown argument \`$1'" >&2
        exit 1
    ;;
esac

set -e  # If any command fails from here on, the whole scripts fails.

# Regardless of the argument prerm is called with, we should undo our changes
# to ssl.load.  If we're upgrading to a newer version of mod_spdy, the new
# package will redo its changes to ssl.load in its postinst script.  See
# http://www.debian.org/doc/debian-policy/ch-maintainerscripts.html#s-unpackphase
# for details.
if [ -f "@@APACHE_CONFDIR@@/ssl.load" ]; then
  # Don't do anything if we don't see the magic "MOD_SPDY" marker; this helps
  # ensure that this prerm script is idempotent.  See
  # http://www.debian.org/doc/debian-policy/ch-maintainerscripts.html#s-idempotency
  # for why this is important.
  if grep -q 'MOD_SPDY' @@APACHE_CONFDIR@@/ssl.load; then
    # First, we uncomment any line that starts with "#ORIG# " (we use that
    # particular prefix, to reduce the chances that we break the file if the
    # user has added their own comments to the file for some reason), up until
    # we see the "MOD_SPDY" marker.  Second, we delete the line containing the
    # "MOD_SPDY" marker and all lines thereafter, thus removing the stuff we
    # appended to the file in the postinst script.
    sed --in-place \
      -e '1,/MOD_SPDY/ s/^#ORIG# \(.*\)$/\1/' \
      -e '/MOD_SPDY/,$ d' \
      @@APACHE_CONFDIR@@/ssl.load
  fi
fi

exit 0