Fix segfault in RSA_free() (and DSA/DH/EC_KEY)
[openssl.git] / crypto / x509v3 / v3_bcons.c
1 /*
2  * Copyright 1999-2016 The OpenSSL Project Authors. All Rights Reserved.
3  *
4  * Licensed under the OpenSSL license (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 }