2 * Copyright 2015-2018 The OpenSSL Project Authors. All Rights Reserved.
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
11 #include "internal/cryptlib.h"
13 #include <openssl/asn1t.h>
14 #include <openssl/conf.h>
15 #include <openssl/x509v3.h>
18 DEFINE_STACK_OF(ASN1_INTEGER
)
19 DEFINE_STACK_OF(CONF_VALUE
)
21 static STACK_OF(CONF_VALUE
) *i2v_TLS_FEATURE(const X509V3_EXT_METHOD
*method
,
22 TLS_FEATURE
*tls_feature
,
23 STACK_OF(CONF_VALUE
) *ext_list
);
24 static TLS_FEATURE
*v2i_TLS_FEATURE(const X509V3_EXT_METHOD
*method
,
26 STACK_OF(CONF_VALUE
) *nval
);
28 ASN1_ITEM_TEMPLATE(TLS_FEATURE
) =
29 ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF
, 0, TLS_FEATURE
, ASN1_INTEGER
)
30 static_ASN1_ITEM_TEMPLATE_END(TLS_FEATURE
)
32 IMPLEMENT_ASN1_ALLOC_FUNCTIONS(TLS_FEATURE
)
34 const X509V3_EXT_METHOD v3_tls_feature
= {
36 ASN1_ITEM_ref(TLS_FEATURE
),
39 (X509V3_EXT_I2V
)i2v_TLS_FEATURE
,
40 (X509V3_EXT_V2I
)v2i_TLS_FEATURE
,
51 static TLS_FEATURE_NAME tls_feature_tbl
[] = {
52 { 5, "status_request" },
53 { 17, "status_request_v2" }
57 * i2v_TLS_FEATURE converts the TLS_FEATURE structure tls_feature into the
58 * STACK_OF(CONF_VALUE) structure ext_list. STACK_OF(CONF_VALUE) is the format
59 * used by the CONF library to represent a multi-valued extension. ext_list is
62 static STACK_OF(CONF_VALUE
) *i2v_TLS_FEATURE(const X509V3_EXT_METHOD
*method
,
63 TLS_FEATURE
*tls_feature
,
64 STACK_OF(CONF_VALUE
) *ext_list
)
70 for (i
= 0; i
< sk_ASN1_INTEGER_num(tls_feature
); i
++) {
71 ai
= sk_ASN1_INTEGER_value(tls_feature
, i
);
72 tlsextid
= ASN1_INTEGER_get(ai
);
73 for (j
= 0; j
< OSSL_NELEM(tls_feature_tbl
); j
++)
74 if (tlsextid
== tls_feature_tbl
[j
].num
)
76 if (j
< OSSL_NELEM(tls_feature_tbl
))
77 X509V3_add_value(NULL
, tls_feature_tbl
[j
].name
, &ext_list
);
79 X509V3_add_value_int(NULL
, ai
, &ext_list
);
85 * v2i_TLS_FEATURE converts the multi-valued extension nval into a TLS_FEATURE
86 * structure, which is returned if the conversion is successful. In case of
87 * error, NULL is returned.
89 static TLS_FEATURE
*v2i_TLS_FEATURE(const X509V3_EXT_METHOD
*method
,
90 X509V3_CTX
*ctx
, STACK_OF(CONF_VALUE
) *nval
)
93 char *extval
, *endptr
;
100 if ((tlsf
= sk_ASN1_INTEGER_new_null()) == NULL
) {
101 X509V3err(X509V3_F_V2I_TLS_FEATURE
, ERR_R_MALLOC_FAILURE
);
105 for (i
= 0; i
< sk_CONF_VALUE_num(nval
); i
++) {
106 val
= sk_CONF_VALUE_value(nval
, i
);
112 for (j
= 0; j
< OSSL_NELEM(tls_feature_tbl
); j
++)
113 if (strcasecmp(extval
, tls_feature_tbl
[j
].name
) == 0)
115 if (j
< OSSL_NELEM(tls_feature_tbl
))
116 tlsextid
= tls_feature_tbl
[j
].num
;
118 tlsextid
= strtol(extval
, &endptr
, 10);
119 if (((*endptr
) != '\0') || (extval
== endptr
) || (tlsextid
< 0) ||
120 (tlsextid
> 65535)) {
121 X509V3err(X509V3_F_V2I_TLS_FEATURE
, X509V3_R_INVALID_SYNTAX
);
122 X509V3_conf_err(val
);
127 if ((ai
= ASN1_INTEGER_new()) == NULL
128 || !ASN1_INTEGER_set(ai
, tlsextid
)
129 || sk_ASN1_INTEGER_push(tlsf
, ai
) <= 0) {
130 X509V3err(X509V3_F_V2I_TLS_FEATURE
, ERR_R_MALLOC_FAILURE
);
137 sk_ASN1_INTEGER_pop_free(tlsf
, ASN1_INTEGER_free
);