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v3_info.c：源码内容
							/* v3_info.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).
 *
 */
#include <stdio.h>
#include "cryptlib.h"
#include <openssl/conf.h>
#include <openssl/asn1.h>
#include <openssl/asn1t.h>
#include <openssl/x509v3.h>
static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_INFO_ACCESS(X509V3_EXT_METHOD *method,
				AUTHORITY_INFO_ACCESS *ainfo,
						STACK_OF(CONF_VALUE) *ret);
static AUTHORITY_INFO_ACCESS *v2i_AUTHORITY_INFO_ACCESS(X509V3_EXT_METHOD *method,
				 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval);
X509V3_EXT_METHOD v3_info =
{ NID_info_access, X509V3_EXT_MULTILINE, ASN1_ITEM_ref(AUTHORITY_INFO_ACCESS),
0,0,0,0,
0,0,
(X509V3_EXT_I2V)i2v_AUTHORITY_INFO_ACCESS,
(X509V3_EXT_V2I)v2i_AUTHORITY_INFO_ACCESS,
0,0,
NULL};
X509V3_EXT_METHOD v3_sinfo =
{ NID_sinfo_access, X509V3_EXT_MULTILINE, ASN1_ITEM_ref(AUTHORITY_INFO_ACCESS),
0,0,0,0,
0,0,
(X509V3_EXT_I2V)i2v_AUTHORITY_INFO_ACCESS,
(X509V3_EXT_V2I)v2i_AUTHORITY_INFO_ACCESS,
0,0,
NULL};
ASN1_SEQUENCE(ACCESS_DESCRIPTION) = {
	ASN1_SIMPLE(ACCESS_DESCRIPTION, method, ASN1_OBJECT),
	ASN1_SIMPLE(ACCESS_DESCRIPTION, location, GENERAL_NAME)
} ASN1_SEQUENCE_END(ACCESS_DESCRIPTION)
IMPLEMENT_ASN1_FUNCTIONS(ACCESS_DESCRIPTION)
ASN1_ITEM_TEMPLATE(AUTHORITY_INFO_ACCESS) = 
	ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, GeneralNames, ACCESS_DESCRIPTION)
ASN1_ITEM_TEMPLATE_END(AUTHORITY_INFO_ACCESS)
IMPLEMENT_ASN1_FUNCTIONS(AUTHORITY_INFO_ACCESS)
static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_INFO_ACCESS(X509V3_EXT_METHOD *method,
				AUTHORITY_INFO_ACCESS *ainfo,
						STACK_OF(CONF_VALUE) *ret)
{
	ACCESS_DESCRIPTION *desc;
	int i,nlen;
	char objtmp[80], *ntmp;
	CONF_VALUE *vtmp;
	for(i = 0; i < sk_ACCESS_DESCRIPTION_num(ainfo); i++) {
		desc = sk_ACCESS_DESCRIPTION_value(ainfo, i);
		ret = i2v_GENERAL_NAME(method, desc->location, ret);
		if(!ret) break;
		vtmp = sk_CONF_VALUE_value(ret, i);
		i2t_ASN1_OBJECT(objtmp, sizeof objtmp, desc->method);
		nlen = strlen(objtmp) + strlen(vtmp->name) + 5;
		ntmp = OPENSSL_malloc(nlen);
		if(!ntmp) {
			X509V3err(X509V3_F_I2V_AUTHORITY_INFO_ACCESS,
					ERR_R_MALLOC_FAILURE);
			return NULL;
		}
		BUF_strlcpy(ntmp, objtmp, nlen);
		BUF_strlcat(ntmp, " - ", nlen);
		BUF_strlcat(ntmp, vtmp->name, nlen);
		OPENSSL_free(vtmp->name);
		vtmp->name = ntmp;
		
	}
	if(!ret) return sk_CONF_VALUE_new_null();
	return ret;
}
static AUTHORITY_INFO_ACCESS *v2i_AUTHORITY_INFO_ACCESS(X509V3_EXT_METHOD *method,
				 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
{
	AUTHORITY_INFO_ACCESS *ainfo = NULL;
	CONF_VALUE *cnf, ctmp;
	ACCESS_DESCRIPTION *acc;
	int i, objlen;
	char *objtmp, *ptmp;
	if(!(ainfo = sk_ACCESS_DESCRIPTION_new_null())) {
		X509V3err(X509V3_F_V2I_AUTHORITY_INFO_ACCESS,ERR_R_MALLOC_FAILURE);
		return NULL;
	}
	for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {
		cnf = sk_CONF_VALUE_value(nval, i);
		if(!(acc = ACCESS_DESCRIPTION_new())
			|| !sk_ACCESS_DESCRIPTION_push(ainfo, acc)) {
			X509V3err(X509V3_F_V2I_AUTHORITY_INFO_ACCESS,ERR_R_MALLOC_FAILURE);
			goto err;
		}
		ptmp = strchr(cnf->name, ';');
		if(!ptmp) {
			X509V3err(X509V3_F_V2I_AUTHORITY_INFO_ACCESS,X509V3_R_INVALID_SYNTAX);
			goto err;
		}
		objlen = ptmp - cnf->name;
		ctmp.name = ptmp + 1;
		ctmp.value = cnf->value;
		if(!v2i_GENERAL_NAME_ex(acc->location, method, ctx, &ctmp, 0))
								 goto err; 
		if(!(objtmp = OPENSSL_malloc(objlen + 1))) {
			X509V3err(X509V3_F_V2I_AUTHORITY_INFO_ACCESS,ERR_R_MALLOC_FAILURE);
			goto err;
		}
		strncpy(objtmp, cnf->name, objlen);
		objtmp[objlen] = 0;
		acc->method = OBJ_txt2obj(objtmp, 0);
		if(!acc->method) {
			X509V3err(X509V3_F_V2I_AUTHORITY_INFO_ACCESS,X509V3_R_BAD_OBJECT);
			ERR_add_error_data(2, "value=", objtmp);
			OPENSSL_free(objtmp);
			goto err;
		}
		OPENSSL_free(objtmp);
	}
	return ainfo;
	err:
	sk_ACCESS_DESCRIPTION_pop_free(ainfo, ACCESS_DESCRIPTION_free);
	return NULL;
}
int i2a_ACCESS_DESCRIPTION(BIO *bp, ACCESS_DESCRIPTION* a)
        {
	i2a_ASN1_OBJECT(bp, a->method);
#ifdef UNDEF
	i2a_GENERAL_NAME(bp, a->location);
#endif
	return 2;
	}

						