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/* v3_ia5.c */
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/*
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* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
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* 1999.
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*/
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/* ====================================================================
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* Copyright (c) 1999 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 <string.h>
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#include <openssl/asn1.h>
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#include <openssl/conf.h>
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#include <openssl/err.h>
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#include <openssl/mem.h>
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#include <openssl/obj.h>
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#include <openssl/x509v3.h>
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#include "../internal.h"
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static char *i2s_ASN1_IA5STRING(const X509V3_EXT_METHOD *method, void *ext) {
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const ASN1_IA5STRING *ia5 = ext;
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char *tmp;
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if (!ia5 || !ia5->length) {
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return NULL;
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}
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if (!(tmp = OPENSSL_malloc(ia5->length + 1))) {
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OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
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return NULL;
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}
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OPENSSL_memcpy(tmp, ia5->data, ia5->length);
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tmp[ia5->length] = 0;
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return tmp;
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}
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Use the correct function types in X509V3_EXT_METHODs.
While C allows function pointer casts, it is UB to call a function with
a different type than its actual type signature. That is, even though
`void f(int *)` and `void g(void *)` have the same ABI, it is UB to
cast `f` to a `void(*)(void *)` and then call it through that pointer.
Clang CFI will try to enforce this rule.
The recent CL to call X509_print in tests revealed that all the i2? and
?2i callbacks in X509V3_EXT_METHODs were implemented with functions of
the wrong type, out of some combination of missing consts and void*
turned into T*.
This CL fixes this. Where the function wasn't exported, or had no
callers, I just fixed the function itself. Where it had extension
callers, I added a wrapper function with a void* type.
I'm not positive whether the wrappers are the right call. On the one
hand, keeping the exported functions as-is is more type-safe and more
OpenSSL-compatible. However, most (but not all) uses of these are in
other code defining X509V3_EXT_METHODs themselves, so the void*
signature is more correct for them too. And the functions have a type
signature meant for X509V3_EXT_METHOD, complete with method pointer.
I've gone with leaving the exported ones as-is for now. Probably the
right answer anyway is to migrate the external callers, of either type
signature.
Change-Id: Ib8f2995cbd890221eaa9ac864a7e553cb6711901
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/52686
Commit-Queue: Bob Beck <bbe@google.com>
Reviewed-by: Bob Beck <bbe@google.com>
3 years ago
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static void *s2i_ASN1_IA5STRING(const X509V3_EXT_METHOD *method,
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X509V3_CTX *ctx, const char *str) {
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ASN1_IA5STRING *ia5;
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if (!str) {
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OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NULL_ARGUMENT);
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return NULL;
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}
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if (!(ia5 = ASN1_IA5STRING_new())) {
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goto err;
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}
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if (!ASN1_STRING_set(ia5, str, strlen(str))) {
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ASN1_IA5STRING_free(ia5);
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goto err;
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}
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return ia5;
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err:
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OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
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return NULL;
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}
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Use the correct function types in X509V3_EXT_METHODs.
While C allows function pointer casts, it is UB to call a function with
a different type than its actual type signature. That is, even though
`void f(int *)` and `void g(void *)` have the same ABI, it is UB to
cast `f` to a `void(*)(void *)` and then call it through that pointer.
Clang CFI will try to enforce this rule.
The recent CL to call X509_print in tests revealed that all the i2? and
?2i callbacks in X509V3_EXT_METHODs were implemented with functions of
the wrong type, out of some combination of missing consts and void*
turned into T*.
This CL fixes this. Where the function wasn't exported, or had no
callers, I just fixed the function itself. Where it had extension
callers, I added a wrapper function with a void* type.
I'm not positive whether the wrappers are the right call. On the one
hand, keeping the exported functions as-is is more type-safe and more
OpenSSL-compatible. However, most (but not all) uses of these are in
other code defining X509V3_EXT_METHODs themselves, so the void*
signature is more correct for them too. And the functions have a type
signature meant for X509V3_EXT_METHOD, complete with method pointer.
I've gone with leaving the exported ones as-is for now. Probably the
right answer anyway is to migrate the external callers, of either type
signature.
Change-Id: Ib8f2995cbd890221eaa9ac864a7e553cb6711901
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/52686
Commit-Queue: Bob Beck <bbe@google.com>
Reviewed-by: Bob Beck <bbe@google.com>
3 years ago
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#define EXT_IA5STRING(nid) \
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{ \
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nid, 0, ASN1_ITEM_ref(ASN1_IA5STRING), 0, 0, 0, 0, i2s_ASN1_IA5STRING, \
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s2i_ASN1_IA5STRING, 0, 0, 0, 0, NULL \
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}
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#define EXT_END \
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{ -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }
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const X509V3_EXT_METHOD v3_ns_ia5_list[] = {
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EXT_IA5STRING(NID_netscape_base_url),
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EXT_IA5STRING(NID_netscape_revocation_url),
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EXT_IA5STRING(NID_netscape_ca_revocation_url),
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EXT_IA5STRING(NID_netscape_renewal_url),
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EXT_IA5STRING(NID_netscape_ca_policy_url),
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EXT_IA5STRING(NID_netscape_ssl_server_name),
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EXT_IA5STRING(NID_netscape_comment),
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EXT_END};
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