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      1 /* v3_pcons.c */
      2 /* Written by Dr Stephen N Henson (steve (at) openssl.org) for the OpenSSL
      3  * project.
      4  */
      5 /* ====================================================================
      6  * Copyright (c) 2003 The OpenSSL Project.  All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  *
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  *
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in
     17  *    the documentation and/or other materials provided with the
     18  *    distribution.
     19  *
     20  * 3. All advertising materials mentioning features or use of this
     21  *    software must display the following acknowledgment:
     22  *    "This product includes software developed by the OpenSSL Project
     23  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
     24  *
     25  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
     26  *    endorse or promote products derived from this software without
     27  *    prior written permission. For written permission, please contact
     28  *    licensing (at) OpenSSL.org.
     29  *
     30  * 5. Products derived from this software may not be called "OpenSSL"
     31  *    nor may "OpenSSL" appear in their names without prior written
     32  *    permission of the OpenSSL Project.
     33  *
     34  * 6. Redistributions of any form whatsoever must retain the following
     35  *    acknowledgment:
     36  *    "This product includes software developed by the OpenSSL Project
     37  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
     38  *
     39  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
     40  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     41  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     42  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
     43  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     44  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     45  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     46  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
     48  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     49  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
     50  * OF THE POSSIBILITY OF SUCH DAMAGE.
     51  * ====================================================================
     52  *
     53  * This product includes cryptographic software written by Eric Young
     54  * (eay (at) cryptsoft.com).  This product includes software written by Tim
     55  * Hudson (tjh (at) cryptsoft.com).
     56  *
     57  */
     58 
     59 
     60 #include <stdio.h>
     61 #include "cryptlib.h"
     62 #include <openssl/asn1.h>
     63 #include <openssl/asn1t.h>
     64 #include <openssl/conf.h>
     65 #include <openssl/x509v3.h>
     66 
     67 static STACK_OF(CONF_VALUE) *i2v_POLICY_CONSTRAINTS(X509V3_EXT_METHOD *method,
     68 				void *bcons, STACK_OF(CONF_VALUE) *extlist);
     69 static void *v2i_POLICY_CONSTRAINTS(X509V3_EXT_METHOD *method,
     70 				X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *values);
     71 
     72 const X509V3_EXT_METHOD v3_policy_constraints = {
     73 NID_policy_constraints, 0,
     74 ASN1_ITEM_ref(POLICY_CONSTRAINTS),
     75 0,0,0,0,
     76 0,0,
     77 i2v_POLICY_CONSTRAINTS,
     78 v2i_POLICY_CONSTRAINTS,
     79 NULL,NULL,
     80 NULL
     81 };
     82 
     83 ASN1_SEQUENCE(POLICY_CONSTRAINTS) = {
     84 	ASN1_IMP_OPT(POLICY_CONSTRAINTS, requireExplicitPolicy, ASN1_INTEGER,0),
     85 	ASN1_IMP_OPT(POLICY_CONSTRAINTS, inhibitPolicyMapping, ASN1_INTEGER,1)
     86 } ASN1_SEQUENCE_END(POLICY_CONSTRAINTS)
     87 
     88 IMPLEMENT_ASN1_ALLOC_FUNCTIONS(POLICY_CONSTRAINTS)
     89 
     90 
     91 static STACK_OF(CONF_VALUE) *i2v_POLICY_CONSTRAINTS(X509V3_EXT_METHOD *method,
     92 	     void *a, STACK_OF(CONF_VALUE) *extlist)
     93 {
     94 	POLICY_CONSTRAINTS *pcons = a;
     95 	X509V3_add_value_int("Require Explicit Policy",
     96 			pcons->requireExplicitPolicy, &extlist);
     97 	X509V3_add_value_int("Inhibit Policy Mapping",
     98 			pcons->inhibitPolicyMapping, &extlist);
     99 	return extlist;
    100 }
    101 
    102 static void *v2i_POLICY_CONSTRAINTS(X509V3_EXT_METHOD *method,
    103 	     X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *values)
    104 {
    105 	POLICY_CONSTRAINTS *pcons=NULL;
    106 	CONF_VALUE *val;
    107 	int i;
    108 	if(!(pcons = POLICY_CONSTRAINTS_new())) {
    109 		X509V3err(X509V3_F_V2I_POLICY_CONSTRAINTS, ERR_R_MALLOC_FAILURE);
    110 		return NULL;
    111 	}
    112 	for(i = 0; i < sk_CONF_VALUE_num(values); i++) {
    113 		val = sk_CONF_VALUE_value(values, i);
    114 		if(!strcmp(val->name, "requireExplicitPolicy")) {
    115 			if(!X509V3_get_value_int(val,
    116 				&pcons->requireExplicitPolicy)) goto err;
    117 		} else if(!strcmp(val->name, "inhibitPolicyMapping")) {
    118 			if(!X509V3_get_value_int(val,
    119 				&pcons->inhibitPolicyMapping)) goto err;
    120 		} else {
    121 			X509V3err(X509V3_F_V2I_POLICY_CONSTRAINTS, X509V3_R_INVALID_NAME);
    122 			X509V3_conf_err(val);
    123 			goto err;
    124 		}
    125 	}
    126 	if (!pcons->inhibitPolicyMapping && !pcons->requireExplicitPolicy) {
    127 		X509V3err(X509V3_F_V2I_POLICY_CONSTRAINTS, X509V3_R_ILLEGAL_EMPTY_EXTENSION);
    128 		goto err;
    129 	}
    130 
    131 	return pcons;
    132 	err:
    133 	POLICY_CONSTRAINTS_free(pcons);
    134 	return NULL;
    135 }
    136 
    137