xref: /third_party/openssl/crypto/x509/v3_bcons.c (revision e1051a39) 
1/*
2 * Copyright 1999-2021 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#include "x509_local.h"
18
19static STACK_OF(CONF_VALUE) *i2v_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method,
20                                                   BASIC_CONSTRAINTS *bcons,
21                                                   STACK_OF(CONF_VALUE)
22                                                   *extlist);
23static BASIC_CONSTRAINTS *v2i_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method,
24                                                X509V3_CTX *ctx,
25                                                STACK_OF(CONF_VALUE) *values);
26
27const X509V3_EXT_METHOD ossl_v3_bcons = {
28    NID_basic_constraints, 0,
29    ASN1_ITEM_ref(BASIC_CONSTRAINTS),
30    0, 0, 0, 0,
31    0, 0,
32    (X509V3_EXT_I2V) i2v_BASIC_CONSTRAINTS,
33    (X509V3_EXT_V2I)v2i_BASIC_CONSTRAINTS,
34    NULL, NULL,
35    NULL
36};
37
38ASN1_SEQUENCE(BASIC_CONSTRAINTS) = {
39        ASN1_OPT(BASIC_CONSTRAINTS, ca, ASN1_FBOOLEAN),
40        ASN1_OPT(BASIC_CONSTRAINTS, pathlen, ASN1_INTEGER)
41} ASN1_SEQUENCE_END(BASIC_CONSTRAINTS)
42
43IMPLEMENT_ASN1_FUNCTIONS(BASIC_CONSTRAINTS)
44
45static STACK_OF(CONF_VALUE) *i2v_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method,
46                                                   BASIC_CONSTRAINTS *bcons,
47                                                   STACK_OF(CONF_VALUE)
48                                                   *extlist)
49{
50    X509V3_add_value_bool("CA", bcons->ca, &extlist);
51    X509V3_add_value_int("pathlen", bcons->pathlen, &extlist);
52    return extlist;
53}
54
55static BASIC_CONSTRAINTS *v2i_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method,
56                                                X509V3_CTX *ctx,
57                                                STACK_OF(CONF_VALUE) *values)
58{
59    BASIC_CONSTRAINTS *bcons = NULL;
60    CONF_VALUE *val;
61    int i;
62
63    if ((bcons = BASIC_CONSTRAINTS_new()) == NULL) {
64        ERR_raise(ERR_LIB_X509V3, 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, "CA") == 0) {
70            if (!X509V3_get_value_bool(val, &bcons->ca))
71                goto err;
72        } else if (strcmp(val->name, "pathlen") == 0) {
73            if (!X509V3_get_value_int(val, &bcons->pathlen))
74                goto err;
75        } else {
76            ERR_raise(ERR_LIB_X509V3, X509V3_R_INVALID_NAME);
77            X509V3_conf_add_error_name_value(val);
78            goto err;
79        }
80    }
81    return bcons;
82 err:
83    BASIC_CONSTRAINTS_free(bcons);
84    return NULL;
85}
86