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127 lines
3.1 KiB
127 lines
3.1 KiB
#!/bin/sh
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[ -x /usr/sbin/xl2tpd ] || exit 0
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[ -n "$INCLUDE_ONLY" ] || {
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. /lib/functions.sh
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. ../netifd-proto.sh
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init_proto "$@"
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}
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proto_l2tp_init_config() {
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proto_config_add_string "username"
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proto_config_add_string "password"
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proto_config_add_string "keepalive"
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proto_config_add_string "pppd_options"
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proto_config_add_boolean "ipv6"
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proto_config_add_int "demand"
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proto_config_add_int "mtu"
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proto_config_add_int "checkup_interval"
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proto_config_add_string "server"
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available=1
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no_device=1
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no_proto_task=1
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teardown_on_l3_link_down=1
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}
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proto_l2tp_setup() {
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local interface="$1"
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local optfile="/tmp/l2tp/options.${interface}"
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local ip serv_addr server host
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json_get_var server server
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host="${server%:*}"
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for ip in $(resolveip -t 5 "$host"); do
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( proto_add_host_dependency "$interface" "$ip" )
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serv_addr=1
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done
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[ -n "$serv_addr" ] || {
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echo "Could not resolve server address" >&2
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sleep 5
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proto_setup_failed "$interface"
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exit 1
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}
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# Start and wait for xl2tpd
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if [ ! -p /var/run/xl2tpd/l2tp-control -o -z "$(pidof xl2tpd)" ]; then
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/etc/init.d/xl2tpd restart
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local wait_timeout=0
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while [ ! -p /var/run/xl2tpd/l2tp-control ]; do
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wait_timeout=$(($wait_timeout + 1))
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[ "$wait_timeout" -gt 5 ] && {
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echo "Cannot find xl2tpd control file." >&2
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proto_setup_failed "$interface"
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exit 1
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}
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sleep 1
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done
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fi
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local ipv6 demand keepalive username password pppd_options mtu
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json_get_vars ipv6 demand keepalive username password pppd_options mtu
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[ "$ipv6" = 1 ] || ipv6=""
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if [ "${demand:-0}" -gt 0 ]; then
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demand="precompiled-active-filter /etc/ppp/filter demand idle $demand"
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else
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demand="persist"
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fi
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local interval="${keepalive##*[, ]}"
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[ "$interval" != "$keepalive" ] || interval=5
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keepalive="${keepalive:+lcp-echo-interval $interval lcp-echo-failure ${keepalive%%[, ]*}}"
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username="${username:+user \"$username\" password \"$password\"}"
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ipv6="${ipv6:++ipv6}"
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mtu="${mtu:+mtu $mtu mru $mtu}"
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mkdir -p /tmp/l2tp
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cat <<EOF >"$optfile"
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usepeerdns
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nodefaultroute
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ipparam "$interface"
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ifname "l2tp-$interface"
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ip-up-script /lib/netifd/ppp-up
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ipv6-up-script /lib/netifd/ppp-up
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ip-down-script /lib/netifd/ppp-down
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ipv6-down-script /lib/netifd/ppp-down
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# Don't wait for LCP term responses; exit immediately when killed.
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lcp-max-terminate 0
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$keepalive
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$username
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$ipv6
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$mtu
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$pppd_options
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EOF
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xl2tpd-control add l2tp-${interface} pppoptfile=${optfile} lns=${server} || {
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echo "xl2tpd-control: Add l2tp-$interface failed" >&2
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proto_setup_failed "$interface"
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exit 1
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}
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xl2tpd-control connect l2tp-${interface} || {
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echo "xl2tpd-control: Connect l2tp-$interface failed" >&2
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proto_setup_failed "$interface"
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exit 1
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}
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}
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proto_l2tp_teardown() {
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local interface="$1"
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local optfile="/tmp/l2tp/options.${interface}"
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rm -f ${optfile}
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if [ -p /var/run/xl2tpd/l2tp-control ]; then
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xl2tpd-control remove l2tp-${interface} || {
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echo "xl2tpd-control: Remove l2tp-$interface failed" >&2
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}
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fi
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# Wait for interface to go down
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while [ -d /sys/class/net/l2tp-${interface} ]; do
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sleep 1
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done
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}
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[ -n "$INCLUDE_ONLY" ] || {
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add_protocol l2tp
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}
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