crypto/x509/v3_bcons.c

   1 /*
   2  * Copyright 1999-2016 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_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method,
  19                                                    BASIC_CONSTRAINTS *bcons,
  20                                                    STACK_OF(CONF_VALUE)
  21                                                    *extlist);
  22 static BASIC_CONSTRAINTS *v2i_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method,
  23                                                 X509V3_CTX *ctx,
  24                                                 STACK_OF(CONF_VALUE) *values);
  25
  26 const X509V3_EXT_METHOD v3_bcons = {
  27     NID_basic_constraints, 0,
  28     ASN1_ITEM_ref(BASIC_CONSTRAINTS),
  29     0, 0, 0, 0,
  30     0, 0,
  31     (X509V3_EXT_I2V) i2v_BASIC_CONSTRAINTS,
  32     (X509V3_EXT_V2I)v2i_BASIC_CONSTRAINTS,
  33     NULL, NULL,
  34     NULL
  35 };
  36
  37 ASN1_SEQUENCE(BASIC_CONSTRAINTS) = {
  38         ASN1_OPT(BASIC_CONSTRAINTS, ca, ASN1_FBOOLEAN),
  39         ASN1_OPT(BASIC_CONSTRAINTS, pathlen, ASN1_INTEGER)
  40 } ASN1_SEQUENCE_END(BASIC_CONSTRAINTS)
  41
  42 IMPLEMENT_ASN1_FUNCTIONS(BASIC_CONSTRAINTS)
  43
  44 static STACK_OF(CONF_VALUE) *i2v_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method,
  45                                                    BASIC_CONSTRAINTS *bcons,
  46                                                    STACK_OF(CONF_VALUE)
  47                                                    *extlist)
  48 {
  49     X509V3_add_value_bool("CA", bcons->ca, &extlist);
  50     X509V3_add_value_int("pathlen", bcons->pathlen, &extlist);
  51     return extlist;
  52 }
  53
  54 static BASIC_CONSTRAINTS *v2i_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method,
  55                                                 X509V3_CTX *ctx,
  56                                                 STACK_OF(CONF_VALUE) *values)
  57 {
  58     BASIC_CONSTRAINTS *bcons = NULL;
  59     CONF_VALUE *val;
  60     int i;
  61
  62     if ((bcons = BASIC_CONSTRAINTS_new()) == NULL) {
  63         X509V3err(X509V3_F_V2I_BASIC_CONSTRAINTS, ERR_R_MALLOC_FAILURE);
  64         return NULL;
  65     }
  66     for (i = 0; i < sk_CONF_VALUE_num(values); i++) {
  67         val = sk_CONF_VALUE_value(values, i);
  68         if (strcmp(val->name, "CA") == 0) {
  69             if (!X509V3_get_value_bool(val, &bcons->ca))
  70                 goto err;
  71         } else if (strcmp(val->name, "pathlen") == 0) {
  72             if (!X509V3_get_value_int(val, &bcons->pathlen))
  73                 goto err;
  74         } else {
  75             X509V3err(X509V3_F_V2I_BASIC_CONSTRAINTS, X509V3_R_INVALID_NAME);
  76             X509V3_conf_err(val);
  77             goto err;
  78         }
  79     }
  80     return bcons;
  81  err:
  82     BASIC_CONSTRAINTS_free(bcons);
  83     return NULL;
  84 }