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      1 /* v3_pcons.c */
      2 /*
      3  * Written by Dr Stephen N Henson (steve (at) openssl.org) for the OpenSSL
      4  * project.
      5  */
      6 /* ====================================================================
      7  * Copyright (c) 2003 The OpenSSL Project.  All rights reserved.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  *
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  *
     16  * 2. Redistributions in binary form must reproduce the above copyright
     17  *    notice, this list of conditions and the following disclaimer in
     18  *    the documentation and/or other materials provided with the
     19  *    distribution.
     20  *
     21  * 3. All advertising materials mentioning features or use of this
     22  *    software must display the following acknowledgment:
     23  *    "This product includes software developed by the OpenSSL Project
     24  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
     25  *
     26  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
     27  *    endorse or promote products derived from this software without
     28  *    prior written permission. For written permission, please contact
     29  *    licensing (at) OpenSSL.org.
     30  *
     31  * 5. Products derived from this software may not be called "OpenSSL"
     32  *    nor may "OpenSSL" appear in their names without prior written
     33  *    permission of the OpenSSL Project.
     34  *
     35  * 6. Redistributions of any form whatsoever must retain the following
     36  *    acknowledgment:
     37  *    "This product includes software developed by the OpenSSL Project
     38  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
     39  *
     40  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
     41  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     42  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     43  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
     44  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     45  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     46  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     47  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
     49  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     50  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
     51  * OF THE POSSIBILITY OF SUCH DAMAGE.
     52  * ====================================================================
     53  *
     54  * This product includes cryptographic software written by Eric Young
     55  * (eay (at) cryptsoft.com).  This product includes software written by Tim
     56  * Hudson (tjh (at) cryptsoft.com). */
     57 
     58 #include <stdio.h>
     59 #include <string.h>
     60 
     61 #include <openssl/asn1.h>
     62 #include <openssl/asn1t.h>
     63 #include <openssl/conf.h>
     64 #include <openssl/err.h>
     65 #include <openssl/obj.h>
     66 #include <openssl/x509v3.h>
     67 
     68 static STACK_OF(CONF_VALUE) *i2v_POLICY_CONSTRAINTS(const X509V3_EXT_METHOD
     69                                                     *method, void *bcons, STACK_OF(CONF_VALUE)
     70                                                     *extlist);
     71 static void *v2i_POLICY_CONSTRAINTS(const X509V3_EXT_METHOD *method,
     72                                     X509V3_CTX *ctx,
     73                                     STACK_OF(CONF_VALUE) *values);
     74 
     75 const X509V3_EXT_METHOD v3_policy_constraints = {
     76     NID_policy_constraints, 0,
     77     ASN1_ITEM_ref(POLICY_CONSTRAINTS),
     78     0, 0, 0, 0,
     79     0, 0,
     80     i2v_POLICY_CONSTRAINTS,
     81     v2i_POLICY_CONSTRAINTS,
     82     NULL, NULL,
     83     NULL
     84 };
     85 
     86 ASN1_SEQUENCE(POLICY_CONSTRAINTS) = {
     87         ASN1_IMP_OPT(POLICY_CONSTRAINTS, requireExplicitPolicy, ASN1_INTEGER,0),
     88         ASN1_IMP_OPT(POLICY_CONSTRAINTS, inhibitPolicyMapping, ASN1_INTEGER,1)
     89 } ASN1_SEQUENCE_END(POLICY_CONSTRAINTS)
     90 
     91 IMPLEMENT_ASN1_ALLOC_FUNCTIONS(POLICY_CONSTRAINTS)
     92 
     93 static STACK_OF(CONF_VALUE) *i2v_POLICY_CONSTRAINTS(const X509V3_EXT_METHOD
     94                                                     *method, void *a, STACK_OF(CONF_VALUE)
     95                                                     *extlist)
     96 {
     97     POLICY_CONSTRAINTS *pcons = a;
     98     X509V3_add_value_int("Require Explicit Policy",
     99                          pcons->requireExplicitPolicy, &extlist);
    100     X509V3_add_value_int("Inhibit Policy Mapping",
    101                          pcons->inhibitPolicyMapping, &extlist);
    102     return extlist;
    103 }
    104 
    105 static void *v2i_POLICY_CONSTRAINTS(const X509V3_EXT_METHOD *method,
    106                                     X509V3_CTX *ctx,
    107                                     STACK_OF(CONF_VALUE) *values)
    108 {
    109     POLICY_CONSTRAINTS *pcons = NULL;
    110     CONF_VALUE *val;
    111     size_t i;
    112     if (!(pcons = POLICY_CONSTRAINTS_new())) {
    113         OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
    114         return NULL;
    115     }
    116     for (i = 0; i < sk_CONF_VALUE_num(values); i++) {
    117         val = sk_CONF_VALUE_value(values, i);
    118         if (!strcmp(val->name, "requireExplicitPolicy")) {
    119             if (!X509V3_get_value_int(val, &pcons->requireExplicitPolicy))
    120                 goto err;
    121         } else if (!strcmp(val->name, "inhibitPolicyMapping")) {
    122             if (!X509V3_get_value_int(val, &pcons->inhibitPolicyMapping))
    123                 goto err;
    124         } else {
    125             OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NAME);
    126             X509V3_conf_err(val);
    127             goto err;
    128         }
    129     }
    130     if (!pcons->inhibitPolicyMapping && !pcons->requireExplicitPolicy) {
    131         OPENSSL_PUT_ERROR(X509V3, X509V3_R_ILLEGAL_EMPTY_EXTENSION);
    132         goto err;
    133     }
    134 
    135     return pcons;
    136  err:
    137     POLICY_CONSTRAINTS_free(pcons);
    138     return NULL;
    139 }
    140