X509_get_ext
if (!(ext = X509_get_ext(cert, l)) || !(ialt = X509V3_EXT_d2i(ext))) {
san_ext = X509_get_ext(x, ext);
X509_EXTENSION *ex = X509_get_ext(x, i);
X509_EXTENSION *preext = X509_get_ext(presigner, preidx);
X509_EXTENSION *certext = X509_get_ext(cert, certidx);
if (i >= 0 && (ext = X509_get_ext(issuer_cert, i)) != NULL
X509_EXTENSION *ex = X509_get_ext(x, i);
&& !X509_EXTENSION_get_critical(X509_get_ext((X509 *)x, i_ext)))
X509_EXTENSION *ext = X509_get_ext((X509 *)x, i_ext);
if ((ext = X509_get_ext(ctx->issuer_cert, i)) == NULL
X509_EXTENSION *X509_get_ext(const X509 *x, int loc);
sct_extension = X509_get_ext(cert, sct_extension_index);