mirror of
https://github.com/guanzhi/GmSSL.git
synced 2026-08-10 16:03:48 +08:00
@@ -1,69 +1,20 @@
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/* tasn_enc.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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* 2000.
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*/
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/* ====================================================================
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* Copyright (c) 2000-2004 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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* Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <stddef.h>
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#include <string.h>
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#include <limits.h>
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#include "cryptlib.h"
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#include "internal/cryptlib.h"
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#include <openssl/asn1.h>
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#include <openssl/asn1t.h>
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#include <openssl/objects.h>
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#include "internal/asn1_int.h"
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#include "asn1_locl.h"
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static int asn1_i2d_ex_primitive(ASN1_VALUE **pval, unsigned char **out,
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const ASN1_ITEM *it, int tag, int aclass);
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@@ -74,6 +25,8 @@ static int asn1_template_ex_i2d(ASN1_VALUE **pval, unsigned char **out,
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const ASN1_TEMPLATE *tt, int tag, int aclass);
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static int asn1_item_flags_i2d(ASN1_VALUE *val, unsigned char **out,
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const ASN1_ITEM *it, int flags);
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static int asn1_ex_i2c(ASN1_VALUE **pval, unsigned char *cout, int *putype,
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const ASN1_ITEM *it);
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/*
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* Top level i2d equivalents: the 'ndef' variant instructs the encoder to use
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@@ -108,7 +61,7 @@ static int asn1_item_flags_i2d(ASN1_VALUE *val, unsigned char **out,
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if (len <= 0)
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return len;
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buf = OPENSSL_malloc(len);
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if (!buf)
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if (buf == NULL)
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return -1;
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p = buf;
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ASN1_item_ex_i2d(&val, &p, it, -1, flags);
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@@ -128,9 +81,7 @@ int ASN1_item_ex_i2d(ASN1_VALUE **pval, unsigned char **out,
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const ASN1_ITEM *it, int tag, int aclass)
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{
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const ASN1_TEMPLATE *tt = NULL;
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unsigned char *p = NULL;
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int i, seqcontlen, seqlen, ndef = 1;
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const ASN1_COMPAT_FUNCS *cf;
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const ASN1_EXTERN_FUNCS *ef;
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const ASN1_AUX *aux = it->funcs;
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ASN1_aux_cb *asn1_cb = 0;
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@@ -148,7 +99,6 @@ int ASN1_item_ex_i2d(ASN1_VALUE **pval, unsigned char **out,
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return asn1_template_ex_i2d(pval, out, it->templates,
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tag, aclass);
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return asn1_i2d_ex_primitive(pval, out, it, tag, aclass);
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break;
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case ASN1_ITYPE_MSTRING:
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return asn1_i2d_ex_primitive(pval, out, it, -1, aclass);
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@@ -174,20 +124,6 @@ int ASN1_item_ex_i2d(ASN1_VALUE **pval, unsigned char **out,
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ef = it->funcs;
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return ef->asn1_ex_i2d(pval, out, it, tag, aclass);
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case ASN1_ITYPE_COMPAT:
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/* old style hackery... */
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cf = it->funcs;
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if (out)
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p = *out;
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i = cf->asn1_i2d(*pval, out);
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/*
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* Fixup for IMPLICIT tag: note this messes up for tags > 30, but so
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* did the old code. Tags > 30 are very rare anyway.
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*/
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if (out && (tag != -1))
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*p = aclass | tag | (*p & V_ASN1_CONSTRUCTED);
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return i;
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case ASN1_ITYPE_NDEF_SEQUENCE:
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/* Use indefinite length constructed if requested */
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if (aclass & ASN1_TFLG_NDEF)
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@@ -256,17 +192,21 @@ int ASN1_item_ex_i2d(ASN1_VALUE **pval, unsigned char **out,
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return 0;
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}
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int ASN1_template_i2d(ASN1_VALUE **pval, unsigned char **out,
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const ASN1_TEMPLATE *tt)
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{
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return asn1_template_ex_i2d(pval, out, tt, -1, 0);
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}
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static int asn1_template_ex_i2d(ASN1_VALUE **pval, unsigned char **out,
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const ASN1_TEMPLATE *tt, int tag, int iclass)
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{
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int i, ret, flags, ttag, tclass, ndef;
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ASN1_VALUE *tval;
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flags = tt->flags;
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/*
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* If field is embedded then val needs fixing so it is a pointer to
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* a pointer to a field.
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*/
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if (flags & ASN1_TFLG_EMBED) {
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tval = (ASN1_VALUE *)pval;
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pval = &tval;
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}
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/*
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* Work out tag and class to use: tagging may come either from the
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* template or the arguments, not both because this would create
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@@ -440,10 +380,10 @@ static int asn1_set_seq_out(STACK_OF(ASN1_VALUE) *sk, unsigned char **out,
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else {
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derlst = OPENSSL_malloc(sk_ASN1_VALUE_num(sk)
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* sizeof(*derlst));
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if (!derlst)
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if (derlst == NULL)
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return 0;
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tmpdat = OPENSSL_malloc(skcontlen);
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if (!tmpdat) {
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if (tmpdat == NULL) {
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OPENSSL_free(derlst);
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return 0;
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}
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@@ -546,8 +486,8 @@ static int asn1_i2d_ex_primitive(ASN1_VALUE **pval, unsigned char **out,
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/* Produce content octets from a structure */
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int asn1_ex_i2c(ASN1_VALUE **pval, unsigned char *cout, int *putype,
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const ASN1_ITEM *it)
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static int asn1_ex_i2c(ASN1_VALUE **pval, unsigned char *cout, int *putype,
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const ASN1_ITEM *it)
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{
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ASN1_BOOLEAN *tbool = NULL;
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ASN1_STRING *strtmp;
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@@ -616,7 +556,6 @@ int asn1_ex_i2c(ASN1_VALUE **pval, unsigned char *cout, int *putype,
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case V_ASN1_BIT_STRING:
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return i2c_ASN1_BIT_STRING((ASN1_BIT_STRING *)*pval,
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cout ? &cout : NULL);
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break;
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case V_ASN1_INTEGER:
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case V_ASN1_ENUMERATED:
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@@ -624,7 +563,6 @@ int asn1_ex_i2c(ASN1_VALUE **pval, unsigned char *cout, int *putype,
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* These are all have the same content format as ASN1_INTEGER
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*/
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return i2c_ASN1_INTEGER((ASN1_INTEGER *)*pval, cout ? &cout : NULL);
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break;
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case V_ASN1_OCTET_STRING:
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case V_ASN1_NUMERICSTRING:
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