text:  
  /* t_x509a.c */
  /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
   * project 1999.
   */
  /* ====================================================================
   * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer. 
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. All advertising materials mentioning features or use of this
   *    software must display the following acknowledgment:
   *    "This product includes software developed by the OpenSSL Project
   *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
   *
   * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
   *    endorse or promote products derived from this software without
   *    prior written permission. For written permission, please contact
   *    licensing@OpenSSL.org.
   *
   * 5. Products derived from this software may not be called "OpenSSL"
   *    nor may "OpenSSL" appear in their names without prior written
   *    permission of the OpenSSL Project.
   *
   * 6. Redistributions of any form whatsoever must retain the following
   *    acknowledgment:
   *    "This product includes software developed by the OpenSSL Project
   *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
   *
   * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
   * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
   * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
   * OF THE POSSIBILITY OF SUCH DAMAGE.
   * ====================================================================
   *
   * This product includes cryptographic software written by Eric Young
   * (eay@cryptsoft.com).  This product includes software written by Tim
   * Hudson (tjh@cryptsoft.com).
   *
   */
  
  #include <stdio.h>
  #include "cryptlib.h"
  #include <openssl/evp.h>
  #include <openssl/asn1.h>
  #include <openssl/x509.h>
  
  /* X509_CERT_AUX and string set routines
   */
  
  int X509_CERT_AUX_print(BIO *out, X509_CERT_AUX *aux, int indent)
  {
  	char oidstr[80], first;
  	int i;
  	if(!aux) return 1;
  	if(aux->trust) {
  		first = 1;
  		BIO_printf(out, "%*sTrusted Uses:\n%*s",
  						indent, "", indent + 2, "");
  		for(i = 0; i < sk_ASN1_OBJECT_num(aux->trust); i++) {
  			if(!first) BIO_puts(out, ", ");
  			else first = 0;
  			OBJ_obj2txt(oidstr, sizeof oidstr,
  				sk_ASN1_OBJECT_value(aux->trust, i), 0);
  			BIO_puts(out, oidstr);
  		}
  		BIO_puts(out, "\n");
  	} else BIO_printf(out, "%*sNo Trusted Uses.\n", indent, "");
  	if(aux->reject) {
  		first = 1;
  		BIO_printf(out, "%*sRejected Uses:\n%*s",
  						indent, "", indent + 2, "");
  		for(i = 0; i < sk_ASN1_OBJECT_num(aux->reject); i++) {
  			if(!first) BIO_puts(out, ", ");
  			else first = 0;
  			OBJ_obj2txt(oidstr, sizeof oidstr,
  				sk_ASN1_OBJECT_value(aux->reject, i), 0);
  			BIO_puts(out, oidstr);
  		}
  		BIO_puts(out, "\n");
  	} else BIO_printf(out, "%*sNo Rejected Uses.\n", indent, "");
  	if(aux->alias) BIO_printf(out, "%*sAlias: %s\n", indent, "",
  							aux->alias->data);
  	if(aux->keyid) {
  		BIO_printf(out, "%*sKey Id: ", indent, "");
  		for(i = 0; i < aux->keyid->length; i++) 
  			BIO_printf(out, "%s%02X", 
  				i ? ":" : "",
  				aux->keyid->data[i]);
  		BIO_write(out,"\n",1);
  	}
  	return 1;
  }
  