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41 lines
1.2 KiB
Go
41 lines
1.2 KiB
Go
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// Copyright 2012 The Go 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 syscerts
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import (
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"crypto/x509"
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"errors"
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"syscall"
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"unsafe"
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)
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// extractSimpleChain extracts the final certificate chain from a CertSimpleChain.
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func extractSimpleChain(simpleChain **syscall.CertSimpleChain, count int) (chain []*x509.Certificate, err error) {
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if simpleChain == nil || count == 0 {
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return nil, errors.New("x509: invalid simple chain")
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}
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simpleChains := (*[1 << 20]*syscall.CertSimpleChain)(unsafe.Pointer(simpleChain))[:]
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lastChain := simpleChains[count-1]
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elements := (*[1 << 20]*syscall.CertChainElement)(unsafe.Pointer(lastChain.Elements))[:]
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for i := 0; i < int(lastChain.NumElements); i++ {
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// Copy the buf, since ParseCertificate does not create its own copy.
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cert := elements[i].CertContext
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encodedCert := (*[1 << 20]byte)(unsafe.Pointer(cert.EncodedCert))[:]
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buf := make([]byte, cert.Length)
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copy(buf, encodedCert[:])
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parsedCert, err := x509.ParseCertificate(buf)
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if err != nil {
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return nil, err
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}
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chain = append(chain, parsedCert)
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}
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return chain, nil
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}
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func initSystemRoots() {
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}
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