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tailscale/wgengine/wgcfg/config.go

47 lines
1.4 KiB
Go

// Copyright (c) 2021 Tailscale Inc & AUTHORS All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package wgcfg has types and a parser for representing WireGuard config.
package wgcfg
import (
"inet.af/netaddr"
"tailscale.com/types/wgkey"
)
//go:generate go run tailscale.com/cmd/cloner -type=Config,Peer -output=clone.go
// EndpointDiscoSuffix is appended to the hex representation of a peer's discovery key
// and is then the sole wireguard endpoint for peers with a non-zero discovery key.
// This form is then recognize by magicsock's ParseEndpoint.
const EndpointDiscoSuffix = ".disco.tailscale:12345"
// Config is a WireGuard configuration.
// It only supports the set of things Tailscale uses.
type Config struct {
Name string
PrivateKey wgkey.Private
Addresses []netaddr.IPPrefix
MTU uint16
DNS []netaddr.IP
Peers []Peer
}
type Peer struct {
PublicKey wgkey.Key
AllowedIPs []netaddr.IPPrefix
Endpoints string // comma-separated host/port pairs: "1.2.3.4:56,[::]:80"
PersistentKeepalive uint16
}
// PeerWithKey returns the Peer with key k and reports whether it was found.
func (config Config) PeerWithKey(k wgkey.Key) (Peer, bool) {
for _, p := range config.Peers {
if p.PublicKey == k {
return p, true
}
}
return Peer{}, false
}