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Fix PEM decoding if file ends with multiple newlines

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This method more closely reflects how crypto/tls does it here: https://golang.org/src/crypto/tls/tls.go?s=5139:5210#L174
This commit is contained in:
Matthew Holt 2016-01-11 10:02:28 -07:00
parent 1369fa9f3c
commit 19ea2cbf75
1 changed files with 11 additions and 12 deletions
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17
acme/crypto.go
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@ -177,23 +177,22 @@ func performECDH(priv *ecdsa.PrivateKey, pub *ecdsa.PublicKey, outLen int, label
// a slice of x509 certificates. This function will error if no certificates are found.
func parsePEMBundle(bundle []byte) ([]*x509.Certificate, error) {
var certificates []*x509.Certificate
var certDERBlock *pem.Block
remaining := bundle
for len(remaining) != 0 {
certBlock, rem := pem.Decode(remaining)
// Thanks golang for having me do this :[
remaining = rem
if certBlock == nil {
return nil, errors.New("Could not decode certificate.")
for {
certDERBlock, bundle = pem.Decode(bundle)
if certDERBlock == nil {
break
}
cert, err := x509.ParseCertificate(certBlock.Bytes)
if certDERBlock.Type == "CERTIFICATE" {
cert, err := x509.ParseCertificate(certDERBlock.Bytes)
if err != nil {
return nil, err
}
certificates = append(certificates, cert)
}
}
if len(certificates) == 0 {
return nil, errors.New("No certificates were found while parsing the bundle.")