#! /bin/sh
#----------------------------------------------------------------------------
# /usr/local/bin/ppp-single-server                               __FLI4LVER__
#
# invokes the PPP daemon for a server-side PPP connection where at most one
# client can connect (e.g. PPP-over-serial-line)
#
# Last Update:  $Id$
#----------------------------------------------------------------------------

. /usr/share/circuits/api

script="$(basename $0)[$$]"
facility=$circuit_logfacility
. /usr/share/logfunc.sh

exit_server()
{
    log_info "exiting PPP single server for $circ_id [$clone_id]"
    if [ -n "$clone_id" ]
    then
        circuit_usable $clone_id && fli4lctrl hangup $clone_id
    fi
}

circ_id=$1
exit_trap_add exit_server

if [ -z "$circ_id" ]
then
    log_error "circuit identifier is missing"
    exit 1
fi

log_info "starting PPP single server for $circ_id"

while true
do
    clone_id=

    if ! circuit_clone $circ_id ppp_server_clone_adaptor "" clone_id errmsg
    then
        log_error "error while cloning circuit $circ_id: $errmsg"
        exit 2
    fi

    log_info "waiting for circuit $clone_id"
    while circuit_usable $clone_id
    do
        sleep 1
    done
    log_info "circuit $clone_id hung up"
done

exit 0