cloudflared-mirror/cmd/cloudflared/update.go

116 lines
2.6 KiB
Go

package main
import (
"os"
"runtime"
"time"
"golang.org/x/crypto/ssh/terminal"
"gopkg.in/urfave/cli.v2"
"github.com/equinox-io/equinox"
"github.com/facebookgo/grace/gracenet"
)
const (
appID = "app_idCzgxYerVD"
noUpdateInShellMessage = "cloudflared will not automatically update when run from the shell. To enable auto-updates, run cloudflared as a service: https://developers.cloudflare.com/argo-tunnel/reference/service/"
noUpdateOnWindowsMessage = "cloudflared will not automatically update on Windows systems."
)
var publicKey = []byte(`
-----BEGIN ECDSA PUBLIC KEY-----
MHYwEAYHKoZIzj0CAQYFK4EEACIDYgAE4OWZocTVZ8Do/L6ScLdkV+9A0IYMHoOf
dsCmJ/QZ6aw0w9qkkwEpne1Lmo6+0pGexZzFZOH6w5amShn+RXt7qkSid9iWlzGq
EKx0BZogHSor9Wy5VztdFaAaVbsJiCbO
-----END ECDSA PUBLIC KEY-----
`)
type ReleaseInfo struct {
Updated bool
Version string
Error error
}
func checkForUpdates() ReleaseInfo {
var opts equinox.Options
if err := opts.SetPublicKeyPEM(publicKey); err != nil {
return ReleaseInfo{Error: err}
}
resp, err := equinox.Check(appID, opts)
switch {
case err == equinox.NotAvailableErr:
return ReleaseInfo{}
case err != nil:
return ReleaseInfo{Error: err}
}
err = resp.Apply()
if err != nil {
return ReleaseInfo{Error: err}
}
return ReleaseInfo{Updated: true, Version: resp.ReleaseVersion}
}
func update(_ *cli.Context) error {
if updateApplied() {
os.Exit(64)
}
return nil
}
func autoupdate(freq time.Duration, listeners *gracenet.Net, shutdownC chan struct{}) error {
tickC := time.Tick(freq)
for {
if updateApplied() {
os.Args = append(os.Args, "--is-autoupdated=true")
pid, err := listeners.StartProcess()
if err != nil {
logger.WithError(err).Error("Unable to restart server automatically")
return err
}
// stop old process after autoupdate. Otherwise we create a new process
// after each update
logger.Infof("PID of the new process is %d", pid)
return nil
}
select {
case <-tickC:
case <-shutdownC:
return nil
}
}
}
func updateApplied() bool {
releaseInfo := checkForUpdates()
if releaseInfo.Updated {
logger.Infof("Updated to version %s", releaseInfo.Version)
return true
}
if releaseInfo.Error != nil {
logger.WithError(releaseInfo.Error).Error("Update check failed")
}
return false
}
func isAutoupdateEnabled(c *cli.Context) bool {
if runtime.GOOS == "windows" {
logger.Info(noUpdateOnWindowsMessage)
return false
}
if isRunningFromTerminal() {
logger.Info(noUpdateInShellMessage)
return false
}
return !c.Bool("no-autoupdate") && c.Duration("autoupdate-freq") != 0
}
func isRunningFromTerminal() bool {
return terminal.IsTerminal(int(os.Stdout.Fd()))
}