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Differences From Artifact [2bf827806d]:

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    Tcl_Obj *certPtr = Tcl_NewListObj(0, NULL), *listPtr;
    BIO *bio = BIO_new(BIO_s_mem());
    int mdnid, pknid, bits, len;
    uint32_t xflags, usage;
    char buffer[BUFSIZ];
    unsigned char md[EVP_MAX_MD_SIZE];
    STACK_OF(GENERAL_NAME) *names;
    STACK_OF(DIST_POINT) *crl;
    STACK_OF(OPENSSL_STRING) *ocsp;
    unsigned long flags = XN_FLAG_RFC2253 | ASN1_STRFLGS_UTF8_CONVERT;
    flags &= ~ASN1_STRFLGS_ESC_MSB;

    if (bio == NULL || certPtr == NULL) {
	return NULL;
    }
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	    Tcl_ListObjAppendElement(interp, listPtr, Tcl_NewStringObj("Any Extended Key Usage", -1));
	}
    }
    LAPPEND_LIST(interp, certPtr, "extendedKeyUsage", listPtr);

    /* CRL Distribution Points identifies where CRL information can be obtained.
	RFC 5280 section 4.2.1.13*/
    {
	STACK_OF(DIST_POINT) *crl;
    listPtr = Tcl_NewListObj(0, NULL);
    if (crl = X509_get_ext_d2i(cert, NID_crl_distribution_points, NULL, NULL)) {
	Tcl_Obj *namesPtr = Tcl_NewListObj(0, NULL);
	listPtr = Tcl_NewListObj(0, NULL);

	if (crl = X509_get_ext_d2i(cert, NID_crl_distribution_points, NULL, NULL)) {
	    Tcl_Obj *namesPtr = Tcl_NewListObj(0, NULL);

	for (int i=0; i < sk_DIST_POINT_num(crl); i++) {
	    DIST_POINT *dp = sk_DIST_POINT_value(crl, i);
	    DIST_POINT_NAME *distpoint = dp->distpoint;
	    for (int i=0; i < sk_DIST_POINT_num(crl); i++) {
		DIST_POINT *dp = sk_DIST_POINT_value(crl, i);
		DIST_POINT_NAME *distpoint = dp->distpoint;

	    if (distpoint->type == 0) {
		/* fullname GENERALIZEDNAME */
		for (int j = 0; j < sk_GENERAL_NAME_num(distpoint->name.fullname); j++) {
		    GENERAL_NAME *gen = sk_GENERAL_NAME_value(distpoint->name.fullname, j);
		    int type;
		    ASN1_STRING *uri = GENERAL_NAME_get0_value(gen, &type);
		    if (type == GEN_URI) {
			Tcl_ListObjAppendElement(interp, listPtr,
			    Tcl_NewStringObj((char*)ASN1_STRING_get0_data(uri), ASN1_STRING_length(uri)));
		    }
		}
	    } else if (distpoint->type == 1) {
		/* relativename X509NAME */
		STACK_OF(X509_NAME_ENTRY) *sk_relname = distpoint->name.relativename;
		for (int j = 0; j < sk_X509_NAME_ENTRY_num(sk_relname); j++) {
		    X509_NAME_ENTRY *e = sk_X509_NAME_ENTRY_value(sk_relname, j);
		    ASN1_STRING *d = X509_NAME_ENTRY_get_data(e);
		    Tcl_ListObjAppendElement(interp, listPtr,
			Tcl_NewStringObj((char*)ASN1_STRING_data(d), ASN1_STRING_length(d)));
		}
	    }
	}
	CRL_DIST_POINTS_free(crl);
    }
    LAPPEND_LIST(interp, certPtr, "crlDistributionPoints", listPtr);
		if (distpoint->type == 0) {
		    /* fullname GENERALIZEDNAME */
		    for (int j = 0; j < sk_GENERAL_NAME_num(distpoint->name.fullname); j++) {
			GENERAL_NAME *gen = sk_GENERAL_NAME_value(distpoint->name.fullname, j);
			int type;
			ASN1_STRING *uri = GENERAL_NAME_get0_value(gen, &type);
			if (type == GEN_URI) {
			    Tcl_ListObjAppendElement(interp, listPtr,
				Tcl_NewStringObj((char*)ASN1_STRING_get0_data(uri), ASN1_STRING_length(uri)));
			}
		    }
		} else if (distpoint->type == 1) {
		    /* relativename X509NAME */
		    STACK_OF(X509_NAME_ENTRY) *sk_relname = distpoint->name.relativename;
		    for (int j = 0; j < sk_X509_NAME_ENTRY_num(sk_relname); j++) {
			X509_NAME_ENTRY *e = sk_X509_NAME_ENTRY_value(sk_relname, j);
			ASN1_STRING *d = X509_NAME_ENTRY_get_data(e);
			Tcl_ListObjAppendElement(interp, listPtr,
			    Tcl_NewStringObj((char*)ASN1_STRING_data(d), ASN1_STRING_length(d)));
		    }
		}
	    }
	    CRL_DIST_POINTS_free(crl);
	}
	LAPPEND_LIST(interp, certPtr, "crlDistributionPoints", listPtr);
    }

    /* Freshest CRL extension */
    if (xflags & EXFLAG_FRESHEST) {
    }

    /* Authority Information Access indicates how to access info and services
	for the certificate issuer. RFC 5280 section 4.2.2.1, NID_info_access */
    /* Get On-line Certificate Status Protocol (OSCP) URL */
    {
	STACK_OF(OPENSSL_STRING) *ocsp;
    listPtr = Tcl_NewListObj(0, NULL);
    if (ocsp = X509_get1_ocsp(cert)) {
	for (int i = 0; i < sk_OPENSSL_STRING_num(ocsp); i++) {
	    Tcl_ListObjAppendElement(interp, listPtr,
		Tcl_NewStringObj(sk_OPENSSL_STRING_value(ocsp, i), -1));
	}
	X509_email_free(ocsp);
    }
    LAPPEND_LIST(interp, certPtr, "ocsp", listPtr);

    /* CA Issuers URL caIssuers */
	listPtr = Tcl_NewListObj(0, NULL);

	if (ocsp = X509_get1_ocsp(cert)) {
	    for (int i = 0; i < sk_OPENSSL_STRING_num(ocsp); i++) {
		Tcl_ListObjAppendElement(interp, listPtr,
		    Tcl_NewStringObj(sk_OPENSSL_STRING_value(ocsp, i), -1));
	    }
	    X509_email_free(ocsp);
	    /* sk_OPENSSL_STRING_free(ocsp); */
	}
	LAPPEND_LIST(interp, certPtr, "ocsp", listPtr);
    }

    /* CA Issuers URL, caIssuers */
    {
	STACK_OF(ACCESS_DESCRIPTION) *ads;
	listPtr = Tcl_NewListObj(0, NULL);

	if (ads = X509_get_ext_d2i(cert, NID_info_access, NULL, NULL)) {
	    for (int i = 0; i < sk_ACCESS_DESCRIPTION_num(ads); i++) {
		ACCESS_DESCRIPTION *ad = sk_ACCESS_DESCRIPTION_value(ads, i);
		if (OBJ_obj2nid(ad->method) == NID_ad_ca_issuers && ad->location) {
		    if (ad->location->type == GEN_URI) {
			unsigned char *buf;

			len = ASN1_STRING_to_UTF8(&buf, ad->location->d.uniformResourceIdentifier);
			Tcl_ListObjAppendElement(interp, listPtr, Tcl_NewStringObj(buf, len));
			OPENSSL_free(buf);
			break;
		    }
		}
	    }
	    /* sk_ACCESS_DESCRIPTION_pop_free(ads, ACCESS_DESCRIPTION_free); */
	    AUTHORITY_INFO_ACCESS_free(ads);
	}
	LAPPEND_LIST(interp, certPtr, "caIssuers", listPtr);
    }

    /* Subject Information Access - RFC 5280 section 4.2.2.2, NID_sinfo_access */

    /* Certificate Alias. If uses a PKCS#12 structure, alias will reflect the
	friendlyName attribute (RFC 2985). */
    len = 0;
    LAPPEND_STR(interp, certPtr, "alias", X509_alias_get0(cert, &len), len);
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