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ba67253db1
Signed-off-by: Kurt Roeckx <kurt@roeckx.be> Reviewed-by: Rich Salz <rsalz@openssl.org> Reviewed-by: Dr. Stephen Henson <steve@openssl.org> GH: #495, MR: #1435
187 lines
6.6 KiB
C
187 lines
6.6 KiB
C
/* v3_tlsf.c */
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/*
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* Written by Rob Stradling (rob@comodo.com) for the OpenSSL project 2015.
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*/
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/* ====================================================================
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* Copyright (c) 2015 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* licensing@OpenSSL.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com).
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*
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*/
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#include <stdio.h>
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#include "internal/cryptlib.h"
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#include "internal/o_str.h"
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#include <openssl/asn1t.h>
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#include <openssl/conf.h>
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#include <openssl/x509v3.h>
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#include "ext_dat.h"
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static STACK_OF(CONF_VALUE) *i2v_TLS_FEATURE(const X509V3_EXT_METHOD *method,
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TLS_FEATURE *tls_feature,
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STACK_OF(CONF_VALUE) *ext_list);
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static TLS_FEATURE *v2i_TLS_FEATURE(const X509V3_EXT_METHOD *method,
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X509V3_CTX *ctx,
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STACK_OF(CONF_VALUE) *nval);
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ASN1_ITEM_TEMPLATE(TLS_FEATURE) =
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ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, TLS_FEATURE, ASN1_INTEGER)
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static_ASN1_ITEM_TEMPLATE_END(TLS_FEATURE)
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IMPLEMENT_ASN1_ALLOC_FUNCTIONS(TLS_FEATURE)
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const X509V3_EXT_METHOD v3_tls_feature = {
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NID_tlsfeature, 0,
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ASN1_ITEM_ref(TLS_FEATURE),
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0, 0, 0, 0,
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0, 0,
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(X509V3_EXT_I2V)i2v_TLS_FEATURE,
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(X509V3_EXT_V2I)v2i_TLS_FEATURE,
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0, 0,
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NULL
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};
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typedef struct {
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long num;
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const char *name;
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} TLS_FEATURE_NAME;
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static TLS_FEATURE_NAME tls_feature_tbl[] = {
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{ 5, "status_request" },
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{ 17, "status_request_v2" }
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};
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/*
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* i2v_TLS_FEATURE converts the TLS_FEATURE structure tls_feature into the
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* STACK_OF(CONF_VALUE) structure ext_list. STACK_OF(CONF_VALUE) is the format
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* used by the CONF library to represent a multi-valued extension. ext_list is
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* returned.
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*/
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static STACK_OF(CONF_VALUE) *i2v_TLS_FEATURE(const X509V3_EXT_METHOD *method,
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TLS_FEATURE *tls_feature,
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STACK_OF(CONF_VALUE) *ext_list)
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{
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int i;
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size_t j;
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ASN1_INTEGER *ai;
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long tlsextid;
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for (i = 0; i < sk_ASN1_INTEGER_num(tls_feature); i++) {
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ai = sk_ASN1_INTEGER_value(tls_feature, i);
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tlsextid = ASN1_INTEGER_get(ai);
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for (j = 0; j < OSSL_NELEM(tls_feature_tbl); j++)
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if (tlsextid == tls_feature_tbl[j].num)
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break;
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if (j < OSSL_NELEM(tls_feature_tbl))
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X509V3_add_value(NULL, tls_feature_tbl[j].name, &ext_list);
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else
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X509V3_add_value_int(NULL, ai, &ext_list);
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}
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return ext_list;
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}
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/*
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* v2i_TLS_FEATURE converts the multi-valued extension nval into a TLS_FEATURE
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* structure, which is returned if the conversion is successful. In case of
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* error, NULL is returned.
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*/
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static TLS_FEATURE *v2i_TLS_FEATURE(const X509V3_EXT_METHOD *method,
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X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
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{
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TLS_FEATURE *tlsf;
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char *extval, *endptr;
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ASN1_INTEGER *ai;
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CONF_VALUE *val;
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int i;
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size_t j;
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long tlsextid;
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if ((tlsf = sk_ASN1_INTEGER_new_null()) == NULL) {
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X509V3err(X509V3_F_V2I_TLS_FEATURE, ERR_R_MALLOC_FAILURE);
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return NULL;
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}
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for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
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val = sk_CONF_VALUE_value(nval, i);
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if (val->value)
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extval = val->value;
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else
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extval = val->name;
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for (j = 0; j < OSSL_NELEM(tls_feature_tbl); j++)
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if (OPENSSL_strcasecmp(extval, tls_feature_tbl[j].name) == 0)
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break;
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if (j < OSSL_NELEM(tls_feature_tbl))
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tlsextid = tls_feature_tbl[j].num;
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else {
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tlsextid = strtol(extval, &endptr, 10);
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if (((*endptr) != '\0') || (extval == endptr) || (tlsextid < 0) ||
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(tlsextid > 65535)) {
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X509V3err(X509V3_F_V2I_TLS_FEATURE, X509V3_R_INVALID_SYNTAX);
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X509V3_conf_err(val);
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goto err;
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}
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}
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ai = ASN1_INTEGER_new();
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if (ai == NULL) {
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X509V3err(X509V3_F_V2I_TLS_FEATURE, ERR_R_MALLOC_FAILURE);
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goto err;
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}
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ASN1_INTEGER_set(ai, tlsextid);
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sk_ASN1_INTEGER_push(tlsf, ai);
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}
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return tlsf;
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err:
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sk_ASN1_INTEGER_pop_free(tlsf, ASN1_INTEGER_free);
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return NULL;
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}
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