#! /bin/sh
#----------------------------------------------------------------------------------
# /var/install/bin/vbox-rss-control - control rss access rights
#
# Copyright (c) 2002-2019  The Eisfair Team, team(at)eisfair(dot)org
#
# Creation:     2007-04-15  jed
# Last Update:  $Id$
#
# 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.
#----------------------------------------------------------------------------------

# read eislib
. /var/install/include/eislib

#exec 2> /tmp/vbox-rss-access-control-trace-$$.test
#set -x

#----------------------------------------------------------------------------------
# check if apache2 has been enabled
#----------------------------------------------------------------------------------
check_installed_apache2 ()
{
    retval=1

    if [ -f ${apache2file} ]
    then
        # apache2 installed
        . ${apache2file}

        if [ "${START_APACHE2}" = "yes" ]
        then
            # mail activated
            if [ "${1}" != "-quiet" ]
            then
                mecho "apache2 has been enabled ..."
            fi
            retval=0
        else
            # apache2 deactivated
            if [ "${1}" != "-quiet" ]
            then
                mecho --warn "apache2 has been disabled ..."
            fi
        fi
    fi

    return ${retval}
}

#----------------------------------------------------------------------------------
# rss files have been updated
# input:  $1 - full rss path
# return:  0 - content has been modified
#          1 - nothing has been modified
#----------------------------------------------------------------------------------
changed_rss_files ()
{
    usr_rsspath=${1}
    retval=1

    usr_rssdir=`echo "${usr_rsspath}" | sed 's#.*\/##'`
    last_checked_file=${vbox_spooldir}/vbox-rss-${usr_rssdir}-last-processed

    if [ -d ${usr_rsspath} ]
    then
        # update lease file marker
        if [ ! -f ${last_checked_file} -o \( ${usr_rsspath} -nt ${last_checked_file} \) ]
        then
            > ${last_checked_file}
            retval=0
        fi
    fi

    return ${retval}
}

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

### set path names ###
vbox_spooldir=/var/spool/vbox

### set file names ###
apache2file=/etc/config.d/apache2

interval=20

if check_installed_apache2 -quiet
then
    # installed - read configuration
    APACHE2_INSTALLED='yes'

    # start control process
    while [ 1 ]
    do
        for DNAME in `find ${APACHE2_DOCUMENT_ROOT}/vbox-rss -type d`
        do
            if [ "${DNAME}" != "${APACHE2_DOCUMENT_ROOT}/vbox-rss" ]
            then
                if changed_rss_files ${DNAME}
                then
                    # change file ownership
                    chmod 640     ${DNAME}/rss.xml
                    chgrp nogroup ${DNAME}/rss.xml

                    # create symbolic link
                    ln -sf ${DNAME}/rss.xml ${DNAME}/index.html

                    chmod 640     ${DNAME}/*.mp3
                    chgrp nogroup ${DNAME}/*.mp3
                fi
            fi
        done

        sleep ${interval}
    done &
else
    # not installed
    mecho "apache2 package not installed!"
fi
#==================================================================================
# end
#==================================================================================