94 lines
2.0 KiB
C
94 lines
2.0 KiB
C
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/*
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* Copyright 1998-2018 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 <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 <openssl/err.h>
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#include "comp_local.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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COMPerr(COMP_F_COMP_CTX_NEW, ERR_R_MALLOC_FAILURE);
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return NULL;
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}
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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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