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35 lines
700 B
Go
35 lines
700 B
Go
// Copyright 2020 Tailscale Inc. 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 x509
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import (
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"compress/gzip"
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"io/ioutil"
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"strings"
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"sync"
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)
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func certUncompressor(zcertBytes string) func() (*Certificate, error) {
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var once sync.Once
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var c *Certificate
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var err error
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return func() (*Certificate, error) {
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once.Do(func() {
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var certBytes []byte
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var zr *gzip.Reader
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zr, err = gzip.NewReader(strings.NewReader(zcertBytes))
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if err != nil {
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return
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}
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certBytes, err = ioutil.ReadAll(zr)
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if err != nil {
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return
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}
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c, err = ParseCertificate(certBytes)
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})
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return c, err
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}
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}
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