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#!/bin/sh
[ -x /usr/sbin/xl2tpd ] || exit 0
[ -n "$INCLUDE_ONLY" ] || {
. /lib/functions.sh
. ../netifd-proto.sh
init_proto "$@"
}
proto_l2tpv2_init_config() {
proto_config_add_string "username"
proto_config_add_string "password"
proto_config_add_string "keepalive"
proto_config_add_string "pppd_options"
proto_config_add_boolean "ipv6"
proto_config_add_int "mtu"
proto_config_add_string "server"
available=1
no_device=1
}
proto_l2tpv2_setup() {
local config="$1"
local iface="$2"
local optfile="/tmp/l2tp/options.${config}"
local ip serv_addr server
json_get_var server server && {
for ip in $(resolveip -t 5 "$server"); do
( proto_add_host_dependency "$config" "$ip" )
serv_addr=1
done
}
[ -n "$serv_addr" ] || {
echo "Could not resolve server address"
sleep 5
proto_setup_failed "$config"
exit 1
}
if [ ! -p /var/run/xl2tpd/l2tp-control ]; then
/etc/init.d/xl2tpd start
fi
json_get_vars ipv6 demand keepalive username password pppd_options
[ "$ipv6" = 1 ] || ipv6=""
if [ "${demand:-0}" -gt 0 ]; then
demand="precompiled-active-filter /etc/ppp/filter demand idle $demand"
else
demand="persist"
fi
[ -n "$mtu" ] || json_get_var mtu mtu
local interval="${keepalive##*[, ]}"
[ "$interval" != "$keepalive" ] || interval=5
mkdir -p /tmp/l2tp
echo "${keepalive:+lcp-echo-interval $interval lcp-echo-failure ${keepalive%%[, ]*}}" > "${optfile}"
echo "usepeerdns" >> "${optfile}"
echo "nodefaultroute" >> "${optfile}"
echo "${username:+user \"$username\" password \"$password\"}" >> "${optfile}"
echo "ipparam \"$config\"" >> "${optfile}"
echo "ifname \"l2tp-$config\"" >> "${optfile}"
echo "ip-up-script /lib/netifd/ppp-up" >> "${optfile}"
echo "ipv6-up-script /lib/netifd/ppp-up" >> "${optfile}"
echo "ip-down-script /lib/netifd/ppp-down" >> "${optfile}"
echo "ipv6-down-script /lib/netifd/ppp-down" >> "${optfile}"
# Don't wait for LCP term responses; exit immediately when killed.
echo "lcp-max-terminate 0" >> "${optfile}"
echo "${ipv6:++ipv6} ${pppd_options}" >> "${optfile}"
echo "${mtu:+mtu $mtu mru $mtu}" >> "${optfile}"
xl2tpd-control add l2tp-${config} pppoptfile=${optfile} lns=${server} redial=yes redial timeout=20
xl2tpd-control connect l2tp-${config}
}
proto_l2tpv2_teardown() {
local interface="$1"
local optfile="/tmp/l2tp/options.${interface}"
case "$ERROR" in
11|19)
proto_notify_error "$interface" AUTH_FAILED
proto_block_restart "$interface"
;;
2)
proto_notify_error "$interface" INVALID_OPTIONS
proto_block_restart "$interface"
;;
esac
xl2tpd-control disconnect l2tp-${interface}
# Wait for interface to go down
while [ -d /sys/class/net/l2tp-${interface} ]; do
sleep 1
done
xl2tpd-control remove l2tp-${interface}
rm -f ${optfile}
}
[ -n "$INCLUDE_ONLY" ] || {
add_protocol l2tpv2
}
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