mirror of
https://github.com/tailscale/tailscale.git
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85184a58ed
In rare circumstances (tailscale/corp#3016), the PublicKey and Endpoints can diverge. This by itself doesn't cause any harm, but our early exit in response did, because it prevented us from recovering from it. Remove the early exit. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
70 lines
1.6 KiB
Go
70 lines
1.6 KiB
Go
// Copyright (c) 2021 Tailscale Inc & AUTHORS All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package wgcfg
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import (
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"io"
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"sort"
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"golang.zx2c4.com/wireguard/conn"
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"golang.zx2c4.com/wireguard/device"
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"golang.zx2c4.com/wireguard/tun"
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"tailscale.com/types/logger"
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"tailscale.com/util/multierr"
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)
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// NewDevice returns a wireguard-go Device configured for Tailscale use.
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func NewDevice(tunDev tun.Device, bind conn.Bind, logger *device.Logger) *device.Device {
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ret := device.NewDevice(tunDev, bind, logger)
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ret.DisableSomeRoamingForBrokenMobileSemantics()
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return ret
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}
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func DeviceConfig(d *device.Device) (*Config, error) {
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r, w := io.Pipe()
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errc := make(chan error, 1)
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go func() {
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errc <- d.IpcGetOperation(w)
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w.Close()
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}()
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cfg, fromErr := FromUAPI(r)
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r.Close()
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getErr := <-errc
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err := multierr.New(getErr, fromErr)
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if err != nil {
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return nil, err
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}
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sort.Slice(cfg.Peers, func(i, j int) bool {
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return cfg.Peers[i].PublicKey.Less(cfg.Peers[j].PublicKey)
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})
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return cfg, nil
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}
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// ReconfigDevice replaces the existing device configuration with cfg.
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func ReconfigDevice(d *device.Device, cfg *Config, logf logger.Logf) (err error) {
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defer func() {
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if err != nil {
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logf("wgcfg.Reconfig failed: %v", err)
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}
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}()
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prev, err := DeviceConfig(d)
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if err != nil {
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return err
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}
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r, w := io.Pipe()
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errc := make(chan error, 1)
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go func() {
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errc <- d.IpcSetOperation(r)
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r.Close()
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}()
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toErr := cfg.ToUAPI(logf, w, prev)
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w.Close()
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setErr := <-errc
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return multierr.New(setErr, toErr)
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}
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