X509_get_ext_by_NID
int ret = X509_get_ext_by_NID(cert, nid, -1);
X509_get_ext_by_NID(cert, nid, ret) >= 0;
LCRYPTO_USED(X509_get_ext_by_NID);
int X509_get_ext_by_NID(const X509 *x, int nid, int lastpos);
i = X509_get_ext_by_NID(cert, NID_subject_key_identifier, -1);
i = X509_get_ext_by_NID(ctx->issuer_cert, NID_subject_alt_name, -1);
LCRYPTO_ALIAS(X509_get_ext_by_NID);
i_ext = X509_get_ext_by_NID((X509 *) x, NID_ext_key_usage, -1);
if ((idx = X509_get_ext_by_NID(cert, NID_ct_precert_scts, -1)) == -1) {
extpos = X509_get_ext_by_NID(scert, NID_subject_alt_name, -1);
if ((ku_idx = X509_get_ext_by_NID(x, NID_key_usage, -1)) < 0) {
int ku_loc = X509_get_ext_by_NID(