// Copyright 2019 The Go 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 modfetch

var knownGOSUMDB = map[string]string{
	"sum.golang.org": "sum.golang.org+033de0ae+Ac4zctda0e5eza+HJyk9SxEdh+s3Ux18htTTAD8OuAn8",

	// of these we should add a map like knownGOSUMDB.
	gosumdb := cfg.GOSUMDB
	if gosumdb == "sum.golang.google.cn" {
		gosumdb = "sum.golang.org https://sum.golang.google.cn"
	}

	if gosumdb == "off" {
		return "", nil, fmt.Errorf("checksum database disabled by GOSUMDB=off")
	}

	key := strings.Fields(gosumdb)
	if len(key) >= 1 {
		if k := knownGOSUMDB[key[0]]; k != "" {
			key[0] = k
		}
	}