#!/bin/sh
########################################################################
# Begin $NETWORK_DEVICES/services/ipv4-static
#
# Description : IPV4 Static Boot Script
#
# Authors     : Nathan Coulson - nathan@linuxfromscratch.org
#               Kevin P. Fleming - kpfleming@linuxfromscratch.org
#
# Version     : 00.00
#
# Notes       :
#
########################################################################

. /lib/network/hook-header
. /lib/network/functions.ppp

HOOK_NAME="pppoe"
HOOK_TYPE="zone"

PPPOE_PLUGIN=rp-pppoe.so

case "${action}" in
	help)
		;;

	info)
		echo "HOOK_NAME=$HOOK_NAME"
		echo "HOOK_TYPE=$HOOK_TYPE"
		;;

	status)
		echo -e "#  ${CLR_BOLD_CYN}PPPoE: ${NAME}${NORMAL}"
		echo -n "#    pppd's PID: "
		pid=$(head -n1 /var/run/ppp-${NAME}.pid 2>/dev/null)
		if [ -n "${pid}" ] && [ -d "/proc/${pid}" ]; then
			echo -e "${CLR_BOLD_GRN}${pid}${NORMAL}"
			exit ${EXIT_OK}
		else
			echo -e "${CLR_BOLD_RED}${pid-off}${NORMAL}"
			exit ${EXIT_OK}
		fi
		;;

	pre-up)
		ppp_pre_up

		check_config NAME
		# Creating necessary files
		[ -d "${RED_RUN}/${NAME}" ] || mkdir -p ${RED_RUN}/${NAME}

		ppp_secret "${USER}" "${SECRET}"

		cat <<EOF >${RED_RUN}/${NAME}/options
# Naming options
name ${NAME}
linkname ${NAME}

plugin ${PPPOE_PLUGIN} ${zone}

# User configuration
user ${USER}

$([ "${PEERDNS}" = "1" ] && echo "usepeerdns")
$([ "${DEFAULTROUTE}" = "1" ] && echo "defaultroute")

noauth
$([ -n "${AUTH}" ] && echo "require-${AUTH}")

noipdefault

# Maximum transmission/receive unit
mtu ${MTU}
mru ${MTU}

# Disable the compression
noaccomp nodeflate nopcomp novj novjccomp nobsdcomp

debug
EOF
		;;

	post-up)
		check_config zone NAME
		MESSAGE="Starting PPP Daemon on interface ${zone}..."
		if zone_is_forwarding ${zone}; then
			pppd file ${RED_RUN}/${NAME}/options >/dev/null
			evaluate_retval
		else
			log_failure_msg "Zone ${zone} is not forwaring any traffic..."
			exit ${EXIT_ERROR}
		fi

		ppp_post_up
		;;

	pre-down)
		ppp_pre_down

		MESSAGE="Stopping PPP Daemon on interface ${zone}..."
		pid=$(head -n1 /var/run/ppp-${NAME}.pid 2>/dev/null)
		if [ -n "${pid}" ]; then
			kill ${pid} &>/dev/null
			evaluate_retval
		fi
		;;

	post-down)
		ppp_post_down
		;;

	add)
		# A pregenerated connection name
		NAME=$(</proc/sys/kernel/random/uuid)
		DEFAULTROUTE=1
		PEERDNS=1
		MTU=1492

		while [ $# -gt 0 ]; do
			case "$1" in
				--user=*)
					USER=${1#--user=}
					;;
				--secret=*)
					SECRET=${1#--secret=}
					;;
				--name=*)
					NAME=${1#--name=}
					;;
				--mtu=*)
					MTU=${1#--mtu=}
					;;
				--no-defaultroute)
					DEFAULTROUTE=0
					;;
				--no-dns)
					PEERDNS=0
					;;
				--auth=*)
					AUTH=${1#--auth=}
					;;
				*)
					echo "Unknown option: $1" >&2
					exit 1
					;;
			esac
			shift
		done

		UUID=$(uuid)
		cat <<EOF >${CONFIG_UUIDS}/${UUID}
HOOK="${HOOK_NAME}"
USER="${USER}"
SECRET="${SECRET}"
NAME="${NAME}"
MTU="${MTU}"
DEFAULTROUTE="${DEFAULTROUTE}"
PEERDNS="${PEERDNS}"
AUTH="${AUTH}"
EOF

		ln -sf ${CONFIG_UUIDS}/${UUID} \
			${CONFIG_ZONES}/${zone}/${HOOK_NAME}-${UUID}

		exit ${EXIT_OK}
		;;

	discover)
		output=$(pppoe-discovery -I ${zone} \
			-U $(</proc/sys/kernel/random/uuid) 2>&1)
		if grep -q "Timeout" <<<${output}; then
			echo "${HOOK_NAME}: FAILED"
			exit ${EXIT_ERROR}
		else
			echo "${HOOK_NAME}: OK"
			echo "${output}" | while read line; do
				[ "${line:0:1}" = "A" ] || continue
				echo "${HOOK_NAME}: ${line}"
			done
			exit ${EXIT_OK}
		fi
		;;
	
	*)
		echo "Usage: ${0} {config|pre-up|post-up|pre-down|post-down|status} [interface]"
		exit ${EXIT_ERROR}
	;;
esac

# End $NETWORK_DEVICES/services/ipv4-static