#!/bin/sh
# udev agent script

DAEMON_NAME=ifplugd

DAEMON=/usr/sbin/$DAEMON_NAME
CFG=/etc/default/$DAEMON_NAME

[ -x $DAEMON ] || exit 0

HOTPLUGFUNCS=/lib/udev/hotplug.functions

[ -f $HOTPLUGFUNCS ] || exit 1
. $HOTPLUGFUNCS
DEBUG=yes export DEBUG

[ "$INTERFACE" ] || { mesg Bad invocation: \$INTERFACE is not set ; exit 1 ; }

[ -f $CFG ] || { mesg No $DAEMON_NAME configuration file ; exit 1 ; }
. $CFG

# return true (0) if interface from list $1 is in list $2
# return false (1) otherwise
search_interfaces () {
    for IF in $2 ; do
        for SEARCH_IF in $1 ; do
            if [ "$SEARCH_IF" = "$IF" ] ; then
                return 0
            fi
        done
    done
    return 1
}

IFPLUGD=/usr/sbin/ifplugd
test -x $IFPLUGD || exit 0

search_interfaces "$INTERFACE" "$INTERFACES"
if [ $? -gt 0 ] ; then
    # Interface isn't statically managed by ifplugd
    search_interfaces "all $INTERFACE" "$HOTPLUG_INTERFACES"
    if [ $? -eq 0 ] ; then
        # Interface is in hotplug allowed list
        case $ACTION in
        add|register)
            debug_mesg Invoking $DAEMON_NAME for $INTERFACE
            IF1=$(echo $INTERFACE | sed "s/-/_/")
            A=$(eval echo \$\{ARGS_${IF1}\})
            [ -z "$A" ] && A="$ARGS"
            exec $IFPLUGD -i $INTERFACE $A &
            ;;
        remove|unregister)
            debug_mesg Stopping $DAEMON_NAME for $INTERFACE
            exec $IFPLUGD -k --wait-on-kill -i $INTERFACE &
            ;;
        esac
        break
    fi
fi