b51bce9420
There are many places (nearly 50) where we malloc and then memset. Add an OPENSSL_zalloc routine to encapsulate that. (Missed one conversion; thanks Richard) Also fixes GH328 Reviewed-by: Richard Levitte <levitte@openssl.org>
136 lines
4.2 KiB
C
136 lines
4.2 KiB
C
/* ====================================================================
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* Copyright (c) 1999-2015 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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* openssl-core@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 <stdlib.h>
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#include <string.h>
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#include <openssl/objects.h>
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#include <openssl/comp.h>
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#include "comp_lcl.h"
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COMP_CTX *COMP_CTX_new(COMP_METHOD *meth)
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{
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COMP_CTX *ret;
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if ((ret = OPENSSL_zalloc(sizeof(*ret))) == NULL)
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return (NULL);
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ret->meth = meth;
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if ((ret->meth->init != NULL) && !ret->meth->init(ret)) {
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OPENSSL_free(ret);
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ret = NULL;
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}
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return (ret);
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}
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const COMP_METHOD *COMP_CTX_get_method(const COMP_CTX *ctx)
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{
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return ctx->meth;
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}
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int COMP_get_type(const COMP_METHOD *meth)
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{
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return meth->type;
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}
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const char *COMP_get_name(const COMP_METHOD *meth)
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{
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return meth->name;
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}
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void COMP_CTX_free(COMP_CTX *ctx)
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{
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if (ctx == NULL)
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return;
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if (ctx->meth->finish != NULL)
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ctx->meth->finish(ctx);
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OPENSSL_free(ctx);
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}
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int COMP_compress_block(COMP_CTX *ctx, unsigned char *out, int olen,
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unsigned char *in, int ilen)
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{
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int ret;
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if (ctx->meth->compress == NULL) {
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return (-1);
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}
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ret = ctx->meth->compress(ctx, out, olen, in, ilen);
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if (ret > 0) {
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ctx->compress_in += ilen;
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ctx->compress_out += ret;
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}
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return (ret);
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}
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int COMP_expand_block(COMP_CTX *ctx, unsigned char *out, int olen,
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unsigned char *in, int ilen)
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{
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int ret;
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if (ctx->meth->expand == NULL) {
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return (-1);
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}
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ret = ctx->meth->expand(ctx, out, olen, in, ilen);
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if (ret > 0) {
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ctx->expand_in += ilen;
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ctx->expand_out += ret;
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}
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return (ret);
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}
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int COMP_CTX_get_type(const COMP_CTX* comp)
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{
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return comp->meth ? comp->meth->type : NID_undef;
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}
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