2 * Copyright 2015-2018 The OpenSSL Project Authors. All Rights Reserved.
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
11 #include "internal/cryptlib.h"
13 #include "internal/o_str.h"
14 #include <openssl/asn1t.h>
15 #include <openssl/conf.h>
16 #include <openssl/x509v3.h>
19 static STACK_OF(CONF_VALUE) *i2v_TLS_FEATURE(const X509V3_EXT_METHOD *method,
20 TLS_FEATURE *tls_feature,
21 STACK_OF(CONF_VALUE) *ext_list);
22 static TLS_FEATURE *v2i_TLS_FEATURE(const X509V3_EXT_METHOD *method,
24 STACK_OF(CONF_VALUE) *nval);
26 ASN1_ITEM_TEMPLATE(TLS_FEATURE) =
27 ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, TLS_FEATURE, ASN1_INTEGER)
28 static_ASN1_ITEM_TEMPLATE_END(TLS_FEATURE)
30 IMPLEMENT_ASN1_ALLOC_FUNCTIONS(TLS_FEATURE)
32 const X509V3_EXT_METHOD v3_tls_feature = {
34 ASN1_ITEM_ref(TLS_FEATURE),
37 (X509V3_EXT_I2V)i2v_TLS_FEATURE,
38 (X509V3_EXT_V2I)v2i_TLS_FEATURE,
49 static TLS_FEATURE_NAME tls_feature_tbl[] = {
50 { 5, "status_request" },
51 { 17, "status_request_v2" }
55 * i2v_TLS_FEATURE converts the TLS_FEATURE structure tls_feature into the
56 * STACK_OF(CONF_VALUE) structure ext_list. STACK_OF(CONF_VALUE) is the format
57 * used by the CONF library to represent a multi-valued extension. ext_list is
60 static STACK_OF(CONF_VALUE) *i2v_TLS_FEATURE(const X509V3_EXT_METHOD *method,
61 TLS_FEATURE *tls_feature,
62 STACK_OF(CONF_VALUE) *ext_list)
68 for (i = 0; i < sk_ASN1_INTEGER_num(tls_feature); i++) {
69 ai = sk_ASN1_INTEGER_value(tls_feature, i);
70 tlsextid = ASN1_INTEGER_get(ai);
71 for (j = 0; j < OSSL_NELEM(tls_feature_tbl); j++)
72 if (tlsextid == tls_feature_tbl[j].num)
74 if (j < OSSL_NELEM(tls_feature_tbl))
75 X509V3_add_value(NULL, tls_feature_tbl[j].name, &ext_list);
77 X509V3_add_value_int(NULL, ai, &ext_list);
83 * v2i_TLS_FEATURE converts the multi-valued extension nval into a TLS_FEATURE
84 * structure, which is returned if the conversion is successful. In case of
85 * error, NULL is returned.
87 static TLS_FEATURE *v2i_TLS_FEATURE(const X509V3_EXT_METHOD *method,
88 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
91 char *extval, *endptr;
98 if ((tlsf = sk_ASN1_INTEGER_new_null()) == NULL) {
99 X509V3err(X509V3_F_V2I_TLS_FEATURE, ERR_R_MALLOC_FAILURE);
103 for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
104 val = sk_CONF_VALUE_value(nval, i);
110 for (j = 0; j < OSSL_NELEM(tls_feature_tbl); j++)
111 if (strcasecmp(extval, tls_feature_tbl[j].name) == 0)
113 if (j < OSSL_NELEM(tls_feature_tbl))
114 tlsextid = tls_feature_tbl[j].num;
116 tlsextid = strtol(extval, &endptr, 10);
117 if (((*endptr) != '\0') || (extval == endptr) || (tlsextid < 0) ||
118 (tlsextid > 65535)) {
119 X509V3err(X509V3_F_V2I_TLS_FEATURE, X509V3_R_INVALID_SYNTAX);
120 X509V3_conf_err(val);
125 if ((ai = ASN1_INTEGER_new()) == NULL
126 || !ASN1_INTEGER_set(ai, tlsextid)
127 || sk_ASN1_INTEGER_push(tlsf, ai) <= 0) {
128 X509V3err(X509V3_F_V2I_TLS_FEATURE, ERR_R_MALLOC_FAILURE);
135 sk_ASN1_INTEGER_pop_free(tlsf, ASN1_INTEGER_free);