xref: /openssl/crypto/x509/v3_pcons.c (revision e077455e)
1 /*
2  * Copyright 2003-2021 The OpenSSL Project Authors. All Rights Reserved.
3  *
4  * Licensed under the Apache License 2.0 (the "License").  You may not use
5  * this file except in compliance with the License.  You can obtain a copy
6  * in the file LICENSE in the source distribution or at
7  * https://www.openssl.org/source/license.html
8  */
9 
10 #include <stdio.h>
11 #include "internal/cryptlib.h"
12 #include <openssl/asn1.h>
13 #include <openssl/asn1t.h>
14 #include <openssl/conf.h>
15 #include <openssl/x509v3.h>
16 #include "ext_dat.h"
17 
18 static STACK_OF(CONF_VALUE) *i2v_POLICY_CONSTRAINTS(const X509V3_EXT_METHOD
19                                                     *method, void *bcons, STACK_OF(CONF_VALUE)
20                                                     *extlist);
21 static void *v2i_POLICY_CONSTRAINTS(const X509V3_EXT_METHOD *method,
22                                     X509V3_CTX *ctx,
23                                     STACK_OF(CONF_VALUE) *values);
24 
25 const X509V3_EXT_METHOD ossl_v3_policy_constraints = {
26     NID_policy_constraints, 0,
27     ASN1_ITEM_ref(POLICY_CONSTRAINTS),
28     0, 0, 0, 0,
29     0, 0,
30     i2v_POLICY_CONSTRAINTS,
31     v2i_POLICY_CONSTRAINTS,
32     NULL, NULL,
33     NULL
34 };
35 
36 ASN1_SEQUENCE(POLICY_CONSTRAINTS) = {
37         ASN1_IMP_OPT(POLICY_CONSTRAINTS, requireExplicitPolicy, ASN1_INTEGER,0),
38         ASN1_IMP_OPT(POLICY_CONSTRAINTS, inhibitPolicyMapping, ASN1_INTEGER,1)
39 } ASN1_SEQUENCE_END(POLICY_CONSTRAINTS)
40 
41 IMPLEMENT_ASN1_ALLOC_FUNCTIONS(POLICY_CONSTRAINTS)
42 
43 static STACK_OF(CONF_VALUE) *i2v_POLICY_CONSTRAINTS(const X509V3_EXT_METHOD
44                                                     *method, void *a, STACK_OF(CONF_VALUE)
45                                                     *extlist)
46 {
47     POLICY_CONSTRAINTS *pcons = a;
48     X509V3_add_value_int("Require Explicit Policy",
49                          pcons->requireExplicitPolicy, &extlist);
50     X509V3_add_value_int("Inhibit Policy Mapping",
51                          pcons->inhibitPolicyMapping, &extlist);
52     return extlist;
53 }
54 
v2i_POLICY_CONSTRAINTS(const X509V3_EXT_METHOD * method,X509V3_CTX * ctx,STACK_OF (CONF_VALUE)* values)55 static void *v2i_POLICY_CONSTRAINTS(const X509V3_EXT_METHOD *method,
56                                     X509V3_CTX *ctx,
57                                     STACK_OF(CONF_VALUE) *values)
58 {
59     POLICY_CONSTRAINTS *pcons = NULL;
60     CONF_VALUE *val;
61     int i;
62 
63     if ((pcons = POLICY_CONSTRAINTS_new()) == NULL) {
64         ERR_raise(ERR_LIB_X509V3, ERR_R_ASN1_LIB);
65         return NULL;
66     }
67     for (i = 0; i < sk_CONF_VALUE_num(values); i++) {
68         val = sk_CONF_VALUE_value(values, i);
69         if (strcmp(val->name, "requireExplicitPolicy") == 0) {
70             if (!X509V3_get_value_int(val, &pcons->requireExplicitPolicy))
71                 goto err;
72         } else if (strcmp(val->name, "inhibitPolicyMapping") == 0) {
73             if (!X509V3_get_value_int(val, &pcons->inhibitPolicyMapping))
74                 goto err;
75         } else {
76             ERR_raise_data(ERR_LIB_X509V3, X509V3_R_INVALID_NAME,
77                            "%s", val->name);
78             goto err;
79         }
80     }
81     if (pcons->inhibitPolicyMapping == NULL
82             && pcons->requireExplicitPolicy == NULL) {
83         ERR_raise(ERR_LIB_X509V3, X509V3_R_ILLEGAL_EMPTY_EXTENSION);
84         goto err;
85     }
86 
87     return pcons;
88  err:
89     POLICY_CONSTRAINTS_free(pcons);
90     return NULL;
91 }
92