#!/bin/sh

# needrestart - Restart daemons after library updates.
#
# Authors:
#   Thomas Liske <thomas@fiasko-nw.net>
#
# Copyright Holder:
#   2013 - 2020 (C) Thomas Liske [http://fiasko-nw.net/~thomas/]
#
# License:
#   This program is free software; you can redistribute it and/or modify
#   it under the terms of the GNU General Public License as published by
#   the Free Software Foundation; either version 2 of the License, or
#   (at your option) any later version.
#

# Use notify-send (from libnotify-bin) to notify a user session via dbus.

NSEND='/usr/bin/notify-send'
test -x "$NSEND" || exit 1

. /usr/lib/needrestart/notify.d.sh

if [ "$NR_NOTIFYD_DISABLE_NOTIFY_SEND" = '1' ]; then
    echo "[$0] disabled in global config" 1>&2
    exit 1
fi

case "$NR_SESSION" in
  session*)
    DBUS_SESSION_BUS_ADDRESS=$(sed -z -n s/^DBUS_SESSION_BUS_ADDRESS=//p "/proc/$NR_SESSPPID/environ")
    if [ -z "$DBUS_SESSION_BUS_ADDRESS" ]; then
        unset DBUS_SESSION_BUS_ADDRESS
    fi

    export DISPLAY=$(sed -z -n s/^DISPLAY=//p "/proc/$NR_SESSPPID/environ")
    export XAUTHORITY=$(sed -z -n s/^XAUTHORITY=//p "/proc/$NR_SESSPPID/environ")

    if [ -z "$DISPLAY" ]; then
        echo "[$0] could not find DISPLAY for $NR_USERNAME on $NR_SESSION" 1>&2
        exit 1
    fi

    echo "[$0] notify user $NR_USERNAME on $DISPLAY" 1>&2

    MSGTITLE=$(gettext 'Relogin or restarts required!')
    MSGBODY=$(gettext 'Your session is running obsolete binaries or libraries as listed below.
<i><b>Please consider a relogin or restart of the affected processes!</b></i>')'\n'$(cat)

    su -p -s /bin/sh -c "$NSEND -a needrestart -u critical -i dialog-warning \"$MSGTITLE\" \"$MSGBODY\"" "$NR_USERNAME"
    ;;
  *)
    echo "[$0] skip session '$NR_SESSION'" 1>&2
    exit 1;
    ;;
esac