From ba67253db19d0319f672d47aa359032e5e66d1b8 Mon Sep 17 00:00:00 2001 From: Rob Stradling Date: Fri, 4 Dec 2015 14:35:43 +0000 Subject: Support the TLS Feature (aka Must Staple) X.509v3 extension (RFC7633). Signed-off-by: Kurt Roeckx Reviewed-by: Rich Salz Reviewed-by: Dr. Stephen Henson GH: #495, MR: #1435 --- crypto/x509v3/v3_tlsf.c | 186 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 186 insertions(+) create mode 100644 crypto/x509v3/v3_tlsf.c (limited to 'crypto/x509v3/v3_tlsf.c') diff --git a/crypto/x509v3/v3_tlsf.c b/crypto/x509v3/v3_tlsf.c new file mode 100644 index 0000000000..700546f6a6 --- /dev/null +++ b/crypto/x509v3/v3_tlsf.c @@ -0,0 +1,186 @@ +/* v3_tlsf.c */ +/* + * Written by Rob Stradling (rob@comodo.com) for the OpenSSL project 2015. + */ +/* ==================================================================== + * Copyright (c) 2015 The OpenSSL Project. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * 3. All advertising materials mentioning features or use of this + * software must display the following acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" + * + * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to + * endorse or promote products derived from this software without + * prior written permission. For written permission, please contact + * licensing@OpenSSL.org. + * + * 5. Products derived from this software may not be called "OpenSSL" + * nor may "OpenSSL" appear in their names without prior written + * permission of the OpenSSL Project. + * + * 6. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" + * + * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY + * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR + * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * ==================================================================== + * + * This product includes cryptographic software written by Eric Young + * (eay@cryptsoft.com). This product includes software written by Tim + * Hudson (tjh@cryptsoft.com). + * + */ + +#include +#include "internal/cryptlib.h" +#include "internal/o_str.h" +#include +#include +#include +#include "ext_dat.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; + 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 (OPENSSL_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_err(val); + goto err; + } + } + + ai = ASN1_INTEGER_new(); + if (ai == NULL) { + X509V3err(X509V3_F_V2I_TLS_FEATURE, ERR_R_MALLOC_FAILURE); + goto err; + } + ASN1_INTEGER_set(ai, tlsextid); + sk_ASN1_INTEGER_push(tlsf, ai); + } + return tlsf; + + err: + sk_ASN1_INTEGER_pop_free(tlsf, ASN1_INTEGER_free); + return NULL; +} -- cgit v1.2.3