#!/bin/sh
#------------------------------------------------------------------------------
# /var/install/bin/update-syslog - update syslog configuration files
#
# Creation:     2008-11-04  jv
# Last Update:  $Id$
#
# Copyright (c) 2001-2010 the eisfair team, team(at)eisfair(dot)org
#
# 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.
#------------------------------------------------------------------------------

PATH=/sbin:/bin:/usr/sbin:/usr/bin

#------------------------------------------------------------------------------
# print file header
# $1 - file name
#------------------------------------------------------------------------------
print_file_header () {
    local f_name="$1"
    cat <<-EOF
	#----------------------------------------------------------------------
	# ${f_name} file generated by Eisfair-config
	# Creation date:  `date '+%Y-%m-%d'`  `whoami`
	# Do not edit this file directly!
	#----------------------------------------------------------------------
	EOF
}

#------------------------------------------------------------------------------
# create syslog-ng.conf file
#------------------------------------------------------------------------------
grep_syslog_conf_entries () {
    local section="$1" FN
    grep -v '^#' /etc/syslog-ng/syslog-ng-$section.std
    for FN in `ls /etc/syslog-ng/syslog-ng-$section.* | grep -Ev ".backup|.std|~"`
    do
        grep -v '^#' $FN
    done
}

create_syslog_conf_file () {
    local fname='/etc/syslog-ng/syslog-ng.conf' fname_tmp="`mktemp`"

    # check if exists default value files
    for ng_std in options source destination filter log
    do
        [ -f /etc/syslog-ng/syslog-ng-$ng_std.std ] || exit 1
    done

    # backup file if exists
    [ -f "$fname" ] && /var/install/bin/backup-file -quiet "$fname" backup

    # create new file (temporary one)
    {   # print header
        print_file_header "$fname"
        # create options entries
        echo "options {"
        grep_syslog_conf_entries options
        echo "};"
        # create source entries
        echo "source s_all {"
        grep_syslog_conf_entries source
        echo "};"
        # create destination entries
        grep_syslog_conf_entries destination
        # create filter entries
        grep_syslog_conf_entries filter
        # create log entries
        grep_syslog_conf_entries log
    } > $fname_tmp

    # copy file, preserve access permissions
    cp -p $fname_tmp $fname
    rm -f $fname_tmp
}

#------------------------------------------------------------------------------
# start, restart or reload the syslog-ng daemon
#------------------------------------------------------------------------------
start_restart_reload_sylog () {
    local NAME="syslog-ng"
    local PIDFILE="/var/run/$NAME.pid"
    if [ -f $PIDFILE ]
    then
        if [ "`pgrep $NAME`" = `cat $PIDFILE` ]
        then
            /usr/sbin/invoke-rc.d $NAME reload 2>/dev/null
        else
            /usr/sbin/invoke-rc.d $NAME restart 2>/dev/null
        fi
    fi
    if [ `pgrep -c $NAME` -eq 0 ]
    then
        [ -f $PIDFILE ] && rm -f $PIDFILE
        /usr/sbin/invoke-rc.d $NAME start 2>/dev/null
    fi
    return 0
}

#==============================================================================
# main
#==============================================================================

create_syslog_conf_file
[ -x /etc/init.d/syslog-ng ] && start_restart_reload_sylog || echo " * syslog disabled in base"

exit 0

#==============================================================================
# end
#==============================================================================