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183 lines
4.6 KiB
183 lines
4.6 KiB
#!/bin/sh
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# Copyright 2016-2017 Dan Luedtke <mail@danrl.com>
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# Licensed to the public under the Apache License 2.0.
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WG=/usr/bin/wg
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if [ ! -x $WG ]; then
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logger -t "wireguard" "error: missing wireguard-tools (${WG})"
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exit 0
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fi
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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_wireguard_init_config() {
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proto_config_add_string "private_key"
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proto_config_add_int "listen_port"
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proto_config_add_int "mtu"
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proto_config_add_string "preshared_key"
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available=1
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no_proto_task=1
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}
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proto_wireguard_setup_peer() {
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local peer_config="$1"
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local public_key
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local allowed_ips
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local route_allowed_ips
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local endpoint_host
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local endpoint_port
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local persistent_keepalive
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config_get public_key "${peer_config}" "public_key"
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config_get allowed_ips "${peer_config}" "allowed_ips"
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config_get_bool route_allowed_ips "${peer_config}" "route_allowed_ips" 0
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config_get endpoint_host "${peer_config}" "endpoint_host"
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config_get endpoint_port "${peer_config}" "endpoint_port"
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config_get persistent_keepalive "${peer_config}" "persistent_keepalive"
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# peer configuration
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echo "[Peer]" >> "${wg_cfg}"
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echo "PublicKey=${public_key}" >> "${wg_cfg}"
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for allowed_ip in $allowed_ips; do
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echo "AllowedIPs=${allowed_ip}" >> "${wg_cfg}"
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done
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if [ "${endpoint_host}" ]; then
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case "${endpoint_host}" in
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*:*)
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endpoint="[${endpoint_host}]"
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;;
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*)
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endpoint="${endpoint_host}"
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;;
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esac
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if [ "${endpoint_port}" ]; then
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endpoint="${endpoint}:${endpoint_port}"
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else
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endpoint="${endpoint}:51820"
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fi
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echo "Endpoint=${endpoint}" >> "${wg_cfg}"
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fi
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if [ "${persistent_keepalive}" ]; then
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echo "PersistentKeepalive=${persistent_keepalive}" >> "${wg_cfg}"
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fi
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# add routes for allowed ips
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if [ ${route_allowed_ips} -ne 0 ]; then
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for allowed_ip in ${allowed_ips}; do
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case "${allowed_ip}" in
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*:*/*)
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proto_add_ipv6_route "${allowed_ip%%/*}" "${allowed_ip##*/}"
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;;
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*/*)
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proto_add_ipv4_route "${allowed_ip%%/*}" "${allowed_ip##*/}"
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;;
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esac
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done
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fi
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}
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proto_wireguard_setup() {
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local config="$1"
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local wg_dir="/tmp/wireguard"
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local wg_cfg="${wg_dir}/${config}"
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local private_key
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local listen_port
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local mtu
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local preshared_key
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# load configuration
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config_load network
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config_get private_key "${config}" "private_key"
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config_get listen_port "${config}" "listen_port"
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config_get addresses "${config}" "addresses"
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config_get mtu "${config}" "mtu"
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config_get preshared_key "${config}" "preshared_key"
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# create interface
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ip link del dev "${config}" 2>/dev/null
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ip link add dev "${config}" type wireguard
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if [ "${mtu}" ]; then
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ip link set mtu "${mtu}" dev "${config}"
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fi
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proto_init_update "${config}" 1
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# generate configuration file
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umask 077
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mkdir -p "${wg_dir}"
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echo "[Interface]" > "${wg_cfg}"
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echo "PrivateKey=${private_key}" >> "${wg_cfg}"
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if [ "${listen_port}" ]; then
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echo "ListenPort=${listen_port}" >> "${wg_cfg}"
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fi
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if [ "${preshared_key}" ]; then
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echo "PresharedKey=${preshared_key}" >> "${wg_cfg}"
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fi
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config_foreach proto_wireguard_setup_peer "wireguard_${config}"
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# apply configuration file
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${WG} setconf ${config} "${wg_cfg}"
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WG_RETURN=$?
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# delete configuration file
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rm -f "${wg_cfg}"
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# check status
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if [ ${WG_RETURN} -ne 0 ]; then
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sleep 5
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proto_setup_failed "${config}"
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exit 1
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fi
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# add ip addresses
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for address in ${addresses}; do
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case "${address}" in
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*:*/*)
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proto_add_ipv6_address "${address%%/*}" "${address##*/}"
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;;
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*.*/*)
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proto_add_ipv4_address "${address%%/*}" "${address##*/}"
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;;
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*:*)
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proto_add_ipv6_address "${address%%/*}" "128"
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;;
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*.*)
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proto_add_ipv4_address "${address%%/*}" "32"
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;;
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esac
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done
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# endpoint dependency
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wg show "${config}" endpoints | \
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sed -E 's/\[?([0-9.:a-f]+)\]?:([0-9]+)/\1 \2/' | \
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while IFS=$'\t ' read -r key address port; do
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[ -n "${port}" ] || continue
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echo "adding host depedency for ${address} at ${config}"
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proto_add_host_dependency "${config}" "${address}"
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done
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proto_send_update "${config}"
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}
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proto_wireguard_teardown() {
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local config="$1"
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ip link del dev "${config}" >/dev/null 2>&1
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}
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[ -n "$INCLUDE_ONLY" ] || {
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add_protocol wireguard
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}
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