crypto/x509/v3_pcons.c

   1 /*
   2  * Copyright 2003-2020 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 DEFINE_STACK_OF(CONF_VALUE)
  19
  20 static STACK_OF(CONF_VALUE) *i2v_POLICY_CONSTRAINTS(const X509V3_EXT_METHOD
  21                                                     *method, void *bcons, STACK_OF(CONF_VALUE)
  22                                                     *extlist);
  23 static void *v2i_POLICY_CONSTRAINTS(const X509V3_EXT_METHOD *method,
  24                                     X509V3_CTX *ctx,
  25                                     STACK_OF(CONF_VALUE) *values);
  26
  27 const X509V3_EXT_METHOD v3_policy_constraints = {
  28     NID_policy_constraints, 0,
  29     ASN1_ITEM_ref(POLICY_CONSTRAINTS),
  30     0, 0, 0, 0,
  31     0, 0,
  32     i2v_POLICY_CONSTRAINTS,
  33     v2i_POLICY_CONSTRAINTS,
  34     NULL, NULL,
  35     NULL
  36 };
  37
  38 ASN1_SEQUENCE(POLICY_CONSTRAINTS) = {
  39         ASN1_IMP_OPT(POLICY_CONSTRAINTS, requireExplicitPolicy, ASN1_INTEGER,0),
  40         ASN1_IMP_OPT(POLICY_CONSTRAINTS, inhibitPolicyMapping, ASN1_INTEGER,1)
  41 } ASN1_SEQUENCE_END(POLICY_CONSTRAINTS)
  42
  43 IMPLEMENT_ASN1_ALLOC_FUNCTIONS(POLICY_CONSTRAINTS)
  44
  45 static STACK_OF(CONF_VALUE) *i2v_POLICY_CONSTRAINTS(const X509V3_EXT_METHOD
  46                                                     *method, void *a, STACK_OF(CONF_VALUE)
  47                                                     *extlist)
  48 {
  49     POLICY_CONSTRAINTS *pcons = a;
  50     X509V3_add_value_int("Require Explicit Policy",
  51                          pcons->requireExplicitPolicy, &extlist);
  52     X509V3_add_value_int("Inhibit Policy Mapping",
  53                          pcons->inhibitPolicyMapping, &extlist);
  54     return extlist;
  55 }
  56
  57 static void *v2i_POLICY_CONSTRAINTS(const X509V3_EXT_METHOD *method,
  58                                     X509V3_CTX *ctx,
  59                                     STACK_OF(CONF_VALUE) *values)
  60 {
  61     POLICY_CONSTRAINTS *pcons = NULL;
  62     CONF_VALUE *val;
  63     int i;
  64
  65     if ((pcons = POLICY_CONSTRAINTS_new()) == NULL) {
  66         X509V3err(X509V3_F_V2I_POLICY_CONSTRAINTS, ERR_R_MALLOC_FAILURE);
  67         return NULL;
  68     }
  69     for (i = 0; i < sk_CONF_VALUE_num(values); i++) {
  70         val = sk_CONF_VALUE_value(values, i);
  71         if (strcmp(val->name, "requireExplicitPolicy") == 0) {
  72             if (!X509V3_get_value_int(val, &pcons->requireExplicitPolicy))
  73                 goto err;
  74         } else if (strcmp(val->name, "inhibitPolicyMapping") == 0) {
  75             if (!X509V3_get_value_int(val, &pcons->inhibitPolicyMapping))
  76                 goto err;
  77         } else {
  78             X509V3err(X509V3_F_V2I_POLICY_CONSTRAINTS, X509V3_R_INVALID_NAME);
  79             X509V3_conf_err(val);
  80             goto err;
  81         }
  82     }
  83     if (pcons->inhibitPolicyMapping == NULL
  84             && pcons->requireExplicitPolicy == NULL) {
  85         X509V3err(X509V3_F_V2I_POLICY_CONSTRAINTS,
  86                   X509V3_R_ILLEGAL_EMPTY_EXTENSION);
  87         goto err;
  88     }
  89
  90     return pcons;
  91  err:
  92     POLICY_CONSTRAINTS_free(pcons);
  93     return NULL;
  94 }