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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);
}
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