xref: /openssl/crypto/x509/v3_bcons.c (revision e077455e)
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 
19 static STACK_OF(CONF_VALUE) *i2v_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method,
20                                                    BASIC_CONSTRAINTS *bcons,
21                                                    STACK_OF(CONF_VALUE)
22                                                    *extlist);
23 static BASIC_CONSTRAINTS *v2i_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method,
24                                                 X509V3_CTX *ctx,
25                                                 STACK_OF(CONF_VALUE) *values);
26 
27 const 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 
38 ASN1_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 
43 IMPLEMENT_ASN1_FUNCTIONS(BASIC_CONSTRAINTS)
44 
45 static 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 
v2i_BASIC_CONSTRAINTS(X509V3_EXT_METHOD * method,X509V3_CTX * ctx,STACK_OF (CONF_VALUE)* values)55 static 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_ASN1_LIB);
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