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#!/bin/bash
# Copyright (c) 2004-2005 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

# Contributed by Roy Marples (uberlord@gentoo.org)

# void ipppd_depend(void)
#
# Sets up the dependancies for the module
ipppd_depend() {
	after macnet
	before interface
	provide isdn
	functions interface_exists interface_type clean_pidfile
	variables ipppd
}

# bool ipppd_check_installed(void)
#
# Returns 1 if isnd4k-utils is installed, otherwise 0
ipppd_check_installed() {
	[[ -x /usr/sbin/ipppd ]] && return 0
	${1:-false} && eerror "For ISDN (ipppd) support, emerge net-dialup/isdn4k-utils"
	return 1
}

# bool ipppd_start(char *iface)
#
# Start isdn on an interface
#
# Returns 0 (true) when successful, non-zero otherwise
ipppd_pre_start() {
	local iface="$1" opts itype=$( interface_type "$1" )
	local pidfile="/var/run/ipppd-${iface}.pid"

	# Check that we are a valid isdn interface
	[[ ${itype} != "ippp" && ${itype} != "isdn" ]] && return 0

	# Check that the interface exists
	interface_exists "${iface}" true || return 1

	if ! clean_pidfile "${pidfile}" ; then
		ewarn "ipppd is already running on ${iface}"
		eend 0
		return 0
	fi

	local ifvar=$( bash_variable "${iface}" )
	# Might or might not be set in conf.d/net
	eval opts=\"\$\{ipppd_${ifvar}\}\"

	einfo "Starting ipppd for ${iface}"
	/usr/sbin/ipppd "${opts}" pidfile "${pidfile}" \
	file "/etc/ppp/options.${iface}" >/dev/null
	eend $? || return $?

	return 0
}

# bool ipppd_stop(char *iface)
#
# Stop isdn on an interface
# Returns 0 (true) when successful, non-zero otherwise
ipppd_stop() {
	local iface="$1" pidfile="/var/run/ipppd-$1.pid"

	[[ ! -f ${pidfile} ]] && return 0

	clean_pidfile "${pidfile}" && return 0
	local pid=$( < "${pidfile}" ) r=0

	einfo "Stopping ipppd for ${iface}"
	kill -s TERM "${pid}"
	if ! process_finished "${pid}" ipppd 10 ; then
		kill -s KILL "${pid}"
		process_finished "${pid}" ipppd 10 || r=1
	fi

	eend ${r}
	return ${r}
}

# vim:ts=4