// ParseCertificate parses a single certificate from the given ASN.1 DER data.
func ParseCertificate(asn1Data []byte) (*Certificate, error) {
var (
c *C.X509
dlen = C.long(len(asn1Data))
buf = (*C.uchar)(&asn1Data[0])
counter = C.long(0)
)
c = C.d2i_X509_with_counter(&buf, dlen, &counter)
if c == nil {
return nil, errors.New("error parsing der data: " + sslerr.SSLErrorMessage().String())
}
cert, err := getCertificate(asn1Data[:counter], c)
if err != nil {
return nil, err
}
return cert, nil
}
// ParseCertificates parses one or more certificates from the given ASN.1 DER
// data. The certificates must be concatenated with no intermediate padding.
func ParseCertificates(asn1Data []byte) ([]*Certificate, error) {
var (
cs []*Certificate
dlen = C.long(len(asn1Data))
buf = (*C.uchar)(&asn1Data[0])
counter = C.long(0)
prev int
)
for counter < dlen {
c := C.d2i_X509_with_counter(&buf, dlen, &counter)
if c == nil {
return nil, errors.New("error parsing der data: " + sslerr.SSLErrorMessage().String())
}
cert, err := getCertificate(asn1Data[prev:counter], c)
if err != nil {
return nil, err
}
cs = append(cs, cert)
prev = int(counter)
}
return cs, nil
}