crypto/x509/v3_bcons.c

   1 /*
   2  * Copyright 1999-2020 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_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method,
  21                                                    BASIC_CONSTRAINTS *bcons,
  22                                                    STACK_OF(CONF_VALUE)
  23                                                    *extlist);
  24 static BASIC_CONSTRAINTS *v2i_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method,
  25                                                 X509V3_CTX *ctx,
  26                                                 STACK_OF(CONF_VALUE) *values);
  27
  28 const X509V3_EXT_METHOD v3_bcons = {
  29     NID_basic_constraints, 0,
  30     ASN1_ITEM_ref(BASIC_CONSTRAINTS),
  31     0, 0, 0, 0,
  32     0, 0,
  33     (X509V3_EXT_I2V) i2v_BASIC_CONSTRAINTS,
  34     (X509V3_EXT_V2I)v2i_BASIC_CONSTRAINTS,
  35     NULL, NULL,
  36     NULL
  37 };
  38
  39 ASN1_SEQUENCE(BASIC_CONSTRAINTS) = {
  40         ASN1_OPT(BASIC_CONSTRAINTS, ca, ASN1_FBOOLEAN),
  41         ASN1_OPT(BASIC_CONSTRAINTS, pathlen, ASN1_INTEGER)
  42 } ASN1_SEQUENCE_END(BASIC_CONSTRAINTS)
  43
  44 IMPLEMENT_ASN1_FUNCTIONS(BASIC_CONSTRAINTS)
  45
  46 static STACK_OF(CONF_VALUE) *i2v_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method,
  47                                                    BASIC_CONSTRAINTS *bcons,
  48                                                    STACK_OF(CONF_VALUE)
  49                                                    *extlist)
  50 {
  51     X509V3_add_value_bool("CA", bcons->ca, &extlist);
  52     X509V3_add_value_int("pathlen", bcons->pathlen, &extlist);
  53     return extlist;
  54 }
  55
  56 static BASIC_CONSTRAINTS *v2i_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method,
  57                                                 X509V3_CTX *ctx,
  58                                                 STACK_OF(CONF_VALUE) *values)
  59 {
  60     BASIC_CONSTRAINTS *bcons = NULL;
  61     CONF_VALUE *val;
  62     int i;
  63
  64     if ((bcons = BASIC_CONSTRAINTS_new()) == NULL) {
  65         X509V3err(X509V3_F_V2I_BASIC_CONSTRAINTS, ERR_R_MALLOC_FAILURE);
  66         return NULL;
  67     }
  68     for (i = 0; i < sk_CONF_VALUE_num(values); i++) {
  69         val = sk_CONF_VALUE_value(values, i);
  70         if (strcmp(val->name, "CA") == 0) {
  71             if (!X509V3_get_value_bool(val, &bcons->ca))
  72                 goto err;
  73         } else if (strcmp(val->name, "pathlen") == 0) {
  74             if (!X509V3_get_value_int(val, &bcons->pathlen))
  75                 goto err;
  76         } else {
  77             X509V3err(X509V3_F_V2I_BASIC_CONSTRAINTS, X509V3_R_INVALID_NAME);
  78             X509V3_conf_err(val);
  79             goto err;
  80         }
  81     }
  82     return bcons;
  83  err:
  84     BASIC_CONSTRAINTS_free(bcons);
  85     return NULL;
  86 }