1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
|
/*
* Copyright 2015-2020 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include "e_os.h"
#include "internal/cryptlib.h"
#include <stdio.h>
#include <openssl/asn1t.h>
#include <openssl/conf.h>
#include <openssl/x509v3.h>
#include "ext_dat.h"
#include "x509_local.h"
static STACK_OF(CONF_VALUE) *i2v_TLS_FEATURE(const X509V3_EXT_METHOD *method,
TLS_FEATURE *tls_feature,
STACK_OF(CONF_VALUE) *ext_list);
static TLS_FEATURE *v2i_TLS_FEATURE(const X509V3_EXT_METHOD *method,
X509V3_CTX *ctx,
STACK_OF(CONF_VALUE) *nval);
ASN1_ITEM_TEMPLATE(TLS_FEATURE) =
ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, TLS_FEATURE, ASN1_INTEGER)
static_ASN1_ITEM_TEMPLATE_END(TLS_FEATURE)
IMPLEMENT_ASN1_ALLOC_FUNCTIONS(TLS_FEATURE)
const X509V3_EXT_METHOD v3_tls_feature = {
NID_tlsfeature, 0,
ASN1_ITEM_ref(TLS_FEATURE),
0, 0, 0, 0,
0, 0,
(X509V3_EXT_I2V)i2v_TLS_FEATURE,
(X509V3_EXT_V2I)v2i_TLS_FEATURE,
0, 0,
NULL
};
typedef struct {
long num;
const char *name;
} TLS_FEATURE_NAME;
static TLS_FEATURE_NAME tls_feature_tbl[] = {
{ 5, "status_request" },
{ 17, "status_request_v2" }
};
/*
* i2v_TLS_FEATURE converts the TLS_FEATURE structure tls_feature into the
* STACK_OF(CONF_VALUE) structure ext_list. STACK_OF(CONF_VALUE) is the format
* used by the CONF library to represent a multi-valued extension. ext_list is
* returned.
*/
static STACK_OF(CONF_VALUE) *i2v_TLS_FEATURE(const X509V3_EXT_METHOD *method,
TLS_FEATURE *tls_feature,
STACK_OF(CONF_VALUE) *ext_list)
{
int i;
size_t j;
ASN1_INTEGER *ai;
long tlsextid;
for (i = 0; i < sk_ASN1_INTEGER_num(tls_feature); i++) {
ai = sk_ASN1_INTEGER_value(tls_feature, i);
tlsextid = ASN1_INTEGER_get(ai);
for (j = 0; j < OSSL_NELEM(tls_feature_tbl); j++)
if (tlsextid == tls_feature_tbl[j].num)
break;
if (j < OSSL_NELEM(tls_feature_tbl))
X509V3_add_value(NULL, tls_feature_tbl[j].name, &ext_list);
else
X509V3_add_value_int(NULL, ai, &ext_list);
}
return ext_list;
}
/*
* v2i_TLS_FEATURE converts the multi-valued extension nval into a TLS_FEATURE
* structure, which is returned if the conversion is successful. In case of
* error, NULL is returned.
*/
static TLS_FEATURE *v2i_TLS_FEATURE(const X509V3_EXT_METHOD *method,
X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
{
TLS_FEATURE *tlsf;
char *extval, *endptr;
ASN1_INTEGER *ai = NULL;
CONF_VALUE *val;
int i;
size_t j;
long tlsextid;
if ((tlsf = sk_ASN1_INTEGER_new_null()) == NULL) {
X509V3err(X509V3_F_V2I_TLS_FEATURE, ERR_R_MALLOC_FAILURE);
return NULL;
}
for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
val = sk_CONF_VALUE_value(nval, i);
if (val->value)
extval = val->value;
else
extval = val->name;
for (j = 0; j < OSSL_NELEM(tls_feature_tbl); j++)
if (strcasecmp(extval, tls_feature_tbl[j].name) == 0)
break;
if (j < OSSL_NELEM(tls_feature_tbl))
tlsextid = tls_feature_tbl[j].num;
else {
tlsextid = strtol(extval, &endptr, 10);
if (((*endptr) != '\0') || (extval == endptr) || (tlsextid < 0) ||
(tlsextid > 65535)) {
X509V3err(X509V3_F_V2I_TLS_FEATURE, X509V3_R_INVALID_SYNTAX);
X509V3_conf_add_error_name_value(val);
goto err;
}
}
if ((ai = ASN1_INTEGER_new()) == NULL
|| !ASN1_INTEGER_set(ai, tlsextid)
|| sk_ASN1_INTEGER_push(tlsf, ai) <= 0) {
X509V3err(X509V3_F_V2I_TLS_FEATURE, ERR_R_MALLOC_FAILURE);
goto err;
}
/* So it doesn't get purged if an error occurs next time around */
ai = NULL;
}
return tlsf;
err:
sk_ASN1_INTEGER_pop_free(tlsf, ASN1_INTEGER_free);
ASN1_INTEGER_free(ai);
return NULL;
}
|
