sl@0: #include <stdio.h>
sl@0: #include <stdlib.h>
sl@0: #include <string.h>
sl@0: #include <openssl/objects.h>
sl@0: #include <openssl/comp.h>
sl@0: 
sl@0: EXPORT_C COMP_CTX *COMP_CTX_new(COMP_METHOD *meth)
sl@0: 	{
sl@0: 	COMP_CTX *ret;
sl@0: 
sl@0: 	if ((ret=(COMP_CTX *)OPENSSL_malloc(sizeof(COMP_CTX))) == NULL)
sl@0: 		{
sl@0: 		/* ZZZZZZZZZZZZZZZZ */
sl@0: 		return(NULL);
sl@0: 		}
sl@0: 	memset(ret,0,sizeof(COMP_CTX));
sl@0: 	ret->meth=meth;
sl@0: 	if ((ret->meth->init != NULL) && !ret->meth->init(ret))
sl@0: 		{
sl@0: 		OPENSSL_free(ret);
sl@0: 		ret=NULL;
sl@0: 		}
sl@0: 	return(ret);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void COMP_CTX_free(COMP_CTX *ctx)
sl@0: 	{
sl@0: 	if(ctx == NULL)
sl@0: 	    return;
sl@0: 
sl@0: 	if (ctx->meth->finish != NULL)
sl@0: 		ctx->meth->finish(ctx);
sl@0: 
sl@0: 	OPENSSL_free(ctx);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int COMP_compress_block(COMP_CTX *ctx, unsigned char *out, int olen,
sl@0: 	     unsigned char *in, int ilen)
sl@0: 	{
sl@0: 	int ret;
sl@0: 	if (ctx->meth->compress == NULL)
sl@0: 		{
sl@0: 		/* ZZZZZZZZZZZZZZZZZ */
sl@0: 		return(-1);
sl@0: 		}
sl@0: 	ret=ctx->meth->compress(ctx,out,olen,in,ilen);
sl@0: 	if (ret > 0)
sl@0: 		{
sl@0: 		ctx->compress_in+=ilen;
sl@0: 		ctx->compress_out+=ret;
sl@0: 		}
sl@0: 	return(ret);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int COMP_expand_block(COMP_CTX *ctx, unsigned char *out, int olen,
sl@0: 	     unsigned char *in, int ilen)
sl@0: 	{
sl@0: 	int ret;
sl@0: 
sl@0: 	if (ctx->meth->expand == NULL)
sl@0: 		{
sl@0: 		/* ZZZZZZZZZZZZZZZZZ */
sl@0: 		return(-1);
sl@0: 		}
sl@0: 	ret=ctx->meth->expand(ctx,out,olen,in,ilen);
sl@0: 	if (ret > 0)
sl@0: 		{
sl@0: 		ctx->expand_in+=ilen;
sl@0: 		ctx->expand_out+=ret;
sl@0: 		}
sl@0: 	return(ret);
sl@0: 	}