forked from tgulacsi/agostle
/
update.go
74 lines (67 loc) · 2.03 KB
/
update.go
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// Copyright 2015 The Agostle Authors. All rights reserved.
// Use of this source code is governed by an Apache 2.0
// license that can be found in the LICENSE file.
package main
import (
"os"
"github.com/blang/semver"
"gopkg.in/inconshreveable/go-update.v0"
"gopkg.in/inconshreveable/go-update.v0/check"
)
const publicKey = `-----BEGIN RSA PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA4tRpQnBqMO7sSDpi/+dX
mmZOixb7uWrrhpIMlpsTYWWm7MOLwJlWXs3WNe6GynyJm4YP9V7cjz0k3TDxL2H4
k5BKPtI+E+au7ddk5xmjbehtYqp5Sz1NoROClvDT10WGsQynoNJgb4AWmHL+OosC
mPqDEHpbxx8Sebnq95yGRkelPKs6+YLZg9METTmp3MsgmC34t/7oziHJZNfkQC5y
wbFXtudEDE01nwwhRLk+RA2qqcyG5U8uM6yhfwUMkLnBxUK5DvI/WLLX6D4CMoTz
lchDiorwcyIxXgPVPOqN9YpkBVJ46VWhuWaJsxoeSqA3YqHqnyqgd8IfvwIi5w8I
2QIDAQAB
-----END RSA PUBLIC KEY-----`
func updateSelf() error {
up := update.New()
if err := up.CanUpdate(); err != nil {
logger.Warn("msg", "Can't update this binary!", "error", err)
return err
}
up, err := up.VerifySignatureWithPEM([]byte(publicKey))
if err != nil {
logger.Error("msg", "Failed to parse public key!", "error", err)
return err
}
// check for the update
r, err := (&check.Params{
AppId: "ap_XZ-6toIU_0Bf0BJFDVvDpV9IVD",
AppVersion: version,
Channel: "latest",
}).CheckForUpdate(updateURI, up)
if err != nil {
if err == check.NoUpdateAvailable {
logger.Info("msg", "No update available.")
return nil
}
logger.Error("msg", "Checking for update", "error", err)
return err
}
v1, err := semver.Make(version)
if err != nil {
logger.Error("msg", "Bad version", "current", version, "error", err)
return err
}
v2, err := semver.Make(r.Version)
if err != nil {
logger.Error("msg", "Bad version", "new", r.Version, "error", err)
return err
}
if !v2.GTE(v1) {
logger.Warn("msg", "Version mismatch", "current", v1, "new", v2)
return nil
}
// apply the update
if err, _ = r.Update(); err != nil {
logger.Error("msg", "Update failed", "error", err)
return err
}
logger.Info("msg", "Update successful, exiting.")
os.Exit(0)
return nil
}