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
18static STACK_OF(CONF_VALUE) *i2v_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method,
19 BASIC_CONSTRAINTS *bcons,
20 STACK_OF(CONF_VALUE)
21 *extlist);
22static BASIC_CONSTRAINTS *v2i_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method,
23 X509V3_CTX *ctx,
24 STACK_OF(CONF_VALUE) *values);
25
26const 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
37ASN1_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
42IMPLEMENT_ASN1_FUNCTIONS(BASIC_CONSTRAINTS)
43
44static 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
54static 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}
85