/* v3_prn.c */

/* Written by Dr Stephen N Henson (shenson@bigfoot.com) 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).

 *

 */

/* X509 v3 extension utilities */

#include <stdio.h>

#include "cryptlib.h"

#include <openssl/conf.h>

#include <openssl/x509v3.h>

/* Extension printing routines */

static int unknown_ext_print(BIO *out, X509_EXTENSION *ext, unsigned long flag, int indent, int supported);

/* Print out a name+value stack */

EXPORT_C void X509V3_EXT_val_prn(BIO *out, STACK_OF(CONF_VALUE) *val, int indent, int ml)

{

	int i;

	CONF_VALUE *nval;

	if(!val) return;

	if(!ml || !sk_CONF_VALUE_num(val)) {

		BIO_printf(out, "%*s", indent, "");

		if(!sk_CONF_VALUE_num(val)) BIO_puts(out, "<EMPTY>\n");

	}

	for(i = 0; i < sk_CONF_VALUE_num(val); i++) {

		if(ml) BIO_printf(out, "%*s", indent, "");

		else if(i > 0) BIO_printf(out, ", ");

		nval = sk_CONF_VALUE_value(val, i);

		if(!nval->name) BIO_puts(out, nval->value);

		else if(!nval->value) BIO_puts(out, nval->name);

#ifndef CHARSET_EBCDIC

		else BIO_printf(out, "%s:%s", nval->name, nval->value);

#else

		else {

			int len;

			char *tmp;

			len = strlen(nval->value)+1;

			tmp = OPENSSL_malloc(len);

			if (tmp)

			{

				ascii2ebcdic(tmp, nval->value, len);

				BIO_printf(out, "%s:%s", nval->name, tmp);

				OPENSSL_free(tmp);

			}

		}

#endif

		if(ml) BIO_puts(out, "\n");

	}

}

/* Main routine: print out a general extension */

EXPORT_C int X509V3_EXT_print(BIO *out, X509_EXTENSION *ext, unsigned long flag, int indent)

{

	void *ext_str = NULL;

	char *value = NULL;

	const unsigned char *p;

	X509V3_EXT_METHOD *method;	

	STACK_OF(CONF_VALUE) *nval = NULL;

	int ok = 1;

	if(!(method = X509V3_EXT_get(ext)))

		return unknown_ext_print(out, ext, flag, indent, 0);

	p = ext->value->data;

	if(method->it) ext_str = ASN1_item_d2i(NULL, &p, ext->value->length, ASN1_ITEM_ptr(method->it));

	else ext_str = method->d2i(NULL, &p, ext->value->length);

	if(!ext_str) return unknown_ext_print(out, ext, flag, indent, 1);

	if(method->i2s) {

		if(!(value = method->i2s(method, ext_str))) {

			ok = 0;

			goto err;

		}

#ifndef CHARSET_EBCDIC

		BIO_printf(out, "%*s%s", indent, "", value);

#else

		{

			int len;

			char *tmp;

			len = strlen(value)+1;

			tmp = OPENSSL_malloc(len);

			if (tmp)

			{

				ascii2ebcdic(tmp, value, len);

				BIO_printf(out, "%*s%s", indent, "", tmp);

				OPENSSL_free(tmp);

			}

		}

#endif

	} else if(method->i2v) {

		if(!(nval = method->i2v(method, ext_str, NULL))) {

			ok = 0;

			goto err;

		}

		X509V3_EXT_val_prn(out, nval, indent,

				 method->ext_flags & X509V3_EXT_MULTILINE);

	} else if(method->i2r) {

		if(!method->i2r(method, ext_str, out, indent)) ok = 0;

	} else ok = 0;

	err:

		sk_CONF_VALUE_pop_free(nval, X509V3_conf_free);

		if(value) OPENSSL_free(value);

		if(method->it) ASN1_item_free(ext_str, ASN1_ITEM_ptr(method->it));

		else method->ext_free(ext_str);

		return ok;

}

EXPORT_C int X509V3_extensions_print(BIO *bp, char *title, STACK_OF(X509_EXTENSION) *exts, unsigned long flag, int indent)

{

	int i, j;

	if(sk_X509_EXTENSION_num(exts) <= 0) return 1;

	if(title) 

		{

		BIO_printf(bp,"%*s%s:\n",indent, "", title);

		indent += 4;

		}

	for (i=0; i<sk_X509_EXTENSION_num(exts); i++)

		{

		ASN1_OBJECT *obj;

		X509_EXTENSION *ex;

		ex=sk_X509_EXTENSION_value(exts, i);

		if (indent && BIO_printf(bp,"%*s",indent, "") <= 0) return 0;

		obj=X509_EXTENSION_get_object(ex);

		i2a_ASN1_OBJECT(bp,obj);

		j=X509_EXTENSION_get_critical(ex);

		if (BIO_printf(bp,": %s\n",j?"critical":"") <= 0)

			return 0;

		if(!X509V3_EXT_print(bp, ex, flag, indent + 4))

			{

			BIO_printf(bp, "%*s", indent + 4, "");

			M_ASN1_OCTET_STRING_print(bp,ex->value);

			}

		if (BIO_write(bp,"\n",1) <= 0) return 0;

		}

	return 1;

}

static int unknown_ext_print(BIO *out, X509_EXTENSION *ext, unsigned long flag, int indent, int supported)

{

	switch(flag & X509V3_EXT_UNKNOWN_MASK) {

		case X509V3_EXT_DEFAULT:

		return 0;

		case X509V3_EXT_ERROR_UNKNOWN:

		if(supported)

			BIO_printf(out, "%*s<Parse Error>", indent, "");

		else

			BIO_printf(out, "%*s<Not Supported>", indent, "");

		return 1;

		case X509V3_EXT_PARSE_UNKNOWN:

			return ASN1_parse_dump(out,

				ext->value->data, ext->value->length, indent, -1);

		case X509V3_EXT_DUMP_UNKNOWN:

			return BIO_dump_indent(out, (char *)ext->value->data, ext->value->length, indent);

		default:

		return 1;

	}

}

#ifndef OPENSSL_NO_FP_API

EXPORT_C int X509V3_EXT_print_fp(FILE *fp, X509_EXTENSION *ext, int flag, int indent)

{

	BIO *bio_tmp;

	int ret;

	if(!(bio_tmp = BIO_new_fp(fp, BIO_NOCLOSE))) return 0;

	ret = X509V3_EXT_print(bio_tmp, ext, flag, indent);

	BIO_free(bio_tmp);

	return ret;

}

#endif