+/*
+ * Copyright 1998-2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <openssl/objects.h>
#include <openssl/comp.h>
+#include "comp_lcl.h"
COMP_CTX *COMP_CTX_new(COMP_METHOD *meth)
- {
- COMP_CTX *ret;
+{
+ COMP_CTX *ret;
+
+ if ((ret = OPENSSL_zalloc(sizeof(*ret))) == NULL)
+ return (NULL);
+ ret->meth = meth;
+ if ((ret->meth->init != NULL) && !ret->meth->init(ret)) {
+ OPENSSL_free(ret);
+ ret = NULL;
+ }
+ return (ret);
+}
+
+const COMP_METHOD *COMP_CTX_get_method(const COMP_CTX *ctx)
+{
+ return ctx->meth;
+}
- if ((ret=(COMP_CTX *)OPENSSL_malloc(sizeof(COMP_CTX))) == NULL)
- {
- /* ZZZZZZZZZZZZZZZZ */
- return(NULL);
- }
- memset(ret,0,sizeof(COMP_CTX));
- ret->meth=meth;
- if ((ret->meth->init != NULL) && !ret->meth->init(ret))
- {
- OPENSSL_free(ret);
- ret=NULL;
- }
- return(ret);
- }
+int COMP_get_type(const COMP_METHOD *meth)
+{
+ return meth->type;
+}
+
+const char *COMP_get_name(const COMP_METHOD *meth)
+{
+ return meth->name;
+}
void COMP_CTX_free(COMP_CTX *ctx)
- {
- if(ctx == NULL)
- return;
+{
+ if (ctx == NULL)
+ return;
- if (ctx->meth->finish != NULL)
- ctx->meth->finish(ctx);
+ if (ctx->meth->finish != NULL)
+ ctx->meth->finish(ctx);
- OPENSSL_free(ctx);
- }
+ OPENSSL_free(ctx);
+}
int COMP_compress_block(COMP_CTX *ctx, unsigned char *out, int olen,
- unsigned char *in, int ilen)
- {
- int ret;
- if (ctx->meth->compress == NULL)
- {
- /* ZZZZZZZZZZZZZZZZZ */
- return(-1);
- }
- ret=ctx->meth->compress(ctx,out,olen,in,ilen);
- if (ret > 0)
- {
- ctx->compress_in+=ilen;
- ctx->compress_out+=ret;
- }
- return(ret);
- }
+ unsigned char *in, int ilen)
+{
+ int ret;
+ if (ctx->meth->compress == NULL) {
+ return (-1);
+ }
+ ret = ctx->meth->compress(ctx, out, olen, in, ilen);
+ if (ret > 0) {
+ ctx->compress_in += ilen;
+ ctx->compress_out += ret;
+ }
+ return (ret);
+}
int COMP_expand_block(COMP_CTX *ctx, unsigned char *out, int olen,
- unsigned char *in, int ilen)
- {
- int ret;
+ unsigned char *in, int ilen)
+{
+ int ret;
+
+ if (ctx->meth->expand == NULL) {
+ return (-1);
+ }
+ ret = ctx->meth->expand(ctx, out, olen, in, ilen);
+ if (ret > 0) {
+ ctx->expand_in += ilen;
+ ctx->expand_out += ret;
+ }
+ return (ret);
+}
- if (ctx->meth->expand == NULL)
- {
- /* ZZZZZZZZZZZZZZZZZ */
- return(-1);
- }
- ret=ctx->meth->expand(ctx,out,olen,in,ilen);
- if (ret > 0)
- {
- ctx->expand_in+=ilen;
- ctx->expand_out+=ret;
- }
- return(ret);
- }
+int COMP_CTX_get_type(const COMP_CTX* comp)
+{
+ return comp->meth ? comp->meth->type : NID_undef;
+}