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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <openssl/objects.h>
#include <openssl/comp.h>
COMP_CTX *COMP_CTX_new(COMP_METHOD *meth)
{
COMP_CTX *ret;
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);
}
void COMP_CTX_free(COMP_CTX *ctx)
{
if(ctx == NULL)
return;
if (ctx->meth->finish != NULL)
ctx->meth->finish(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);
}
int COMP_expand_block(COMP_CTX *ctx, unsigned char *out, int olen,
unsigned char *in, int ilen)
{
int 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);
}