#!/bin/sh
#---------------------------------------------------------------------------
# /etc/rc.d/rc540.dyndns - write config for dyndns
# part of Package DYNDNS __FLI4LVER__, see documentation for licence
#
# Copyright (c) 2001-2002 - Thomas Mueller
# Copyright (c) 2002-2003 - Tobias Gruetzmacher
# Copyright (c) 2003-2016 - fli4l-Team <team@fli4l.de>
#
# Created by:  Thomas Mueller
# Last change: $Id$
#----------------------------------------------------------------------------


case $OPT_DYNDNS in
yes)
    begin_script DYNDNS "Setting up dynamic hostname configuration ..."

    [ "$DYNDNS_ALLOW_SSL" = yes ]      && > /etc/dyndns/allow_ssl
    [ "$DYNDNS_DEBUG_PROVIDER" = yes ] && > /etc/dyndns/debug_provider
    [ "$DYNDNS_LOOKUP_NAMES" = yes ]   && > /etc/dyndns/lookup_names

    # Write config
    > /etc/dyndns/dyndns.conf
    # Make the config (with the passwords!) only readable by root
    chmod 600 /etc/dyndns/dyndns.conf

    add_dyndns_crontab_entry=
    [ 0$DYNDNS_N -eq 0 ] || for idx in `seq 1 $DYNDNS_N`; do
        # get config entries for provider idx
        eval provider='$DYNDNS_'$idx'_PROVIDER'
        eval user='$DYNDNS_'$idx'_USER'
        eval pass='$DYNDNS_'$idx'_PASSWORD'
        eval host='$DYNDNS_'$idx'_HOSTNAME'
        eval circ='$DYNDNS_'$idx'_CIRCUIT'
        eval renew='$DYNDNS_'$idx'_RENEW'
        eval extip='$DYNDNS_'$idx'_EXT_IP'
        eval updatehost='$DYNDNS_'$idx'_UPDATEHOST'
        eval login='$DYNDNS_'$idx'_LOGIN'
        : ${extip:=no}
        : ${renew:=-}
        : ${login:=no}

        provider_file=/etc/dyndns/provider.$provider
        if [ ! -f $provider_file ]; then
            log_error "Invalid provider $provider: $provider_file is missing"
            continue
        fi

        sep=
        circuits=
        for c in $circ; do
            if [ -f /var/run/circuit-$c ]; then
                circuits="$circuits$sep$c"
                sep=,
            elif [ "static" = "$c" ]; then
                dev=`ip r s | sed -ne 's/^default[[:space:]].*\<dev[[:space:]]\+\([^ ]\+\).*/\1/p' | head -n 1`
                echo "$dev" > /var/run/circuit-static
                circuits="static"
            else
                log_error "Invalid circuit '$c' for $host (DYNDNS_$idx), ignoring circuit"
            fi
        done
        if [ "$circuits" ]; then
            echo "$host $provider $circuits $user $pass $extip $renew $updatehost" >> /etc/dyndns/dyndns.conf
        else
            log_error "No valid circuit for $host (DYNDNS_$idx), ignoring entry"
        fi

        if [ "$login" = "yes" -a -z "$crontab_entry_added" ]
        then
            add_dyndns_crontab_entry=yes
        fi
    done
    if [ "$add_dyndns_crontab_entry" = "yes" -a -f /usr/local/bin/dyndns-login.sh ]; then
        add_crontab_entry "$DYNDNS_LOGINTIME" "/usr/local/bin/dyndns-login.sh"
    fi

    # Create directories for logging, history and registered IPs
    mkdir -p /var/log/dyndns  /var/log/dyndns/history /var/run/dyndns
    chmod a+r /var/log/dyndns /var/log/dyndns/history

    if [ "$OPT_HTTPD$DYNDNS_SAVE_OUTPUT" = 'yesyes' ]; then
        httpd-menu.sh add -p 900 status_dyndns.cgi "DynDNS" '$_MT_stat' dyndns
        [ "$DYNDNS_DEBUG_PROVIDER" = yes ] && httpd-menu.sh add -p 910 'status_dyndns.cgi?action=debug_provider' "DynDNS-Debug" Debug dyndns
    fi

    end_script
;;
esac