crypto/x509/v3_pcons.c

   1 /*
   2  * Copyright 2003-2016 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 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
  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         X509V3err(X509V3_F_V2I_POLICY_CONSTRAINTS, ERR_R_MALLOC_FAILURE);
  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             X509V3err(X509V3_F_V2I_POLICY_CONSTRAINTS, X509V3_R_INVALID_NAME);
  77             X509V3_conf_err(val);
  78             goto err;
  79         }
  80     }
  81     if (pcons->inhibitPolicyMapping == NULL
  82             && pcons->requireExplicitPolicy == NULL) {
  83         X509V3err(X509V3_F_V2I_POLICY_CONSTRAINTS,
  84                   X509V3_R_ILLEGAL_EMPTY_EXTENSION);
  85         goto err;
  86     }
  87
  88     return pcons;
  89  err:
  90     POLICY_CONSTRAINTS_free(pcons);
  91     return NULL;
  92 }