yuzu/externals/libressl/crypto/comp/comp_lib.c

71 lines
1.2 KiB
C
Raw Normal View History

2022-04-25 00:29:35 +04:00
/* $OpenBSD: comp_lib.c,v 1.9 2022/01/09 23:50:10 tb Exp $ */
2020-12-28 19:15:37 +04:00
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <openssl/objects.h>
#include <openssl/comp.h>
2022-04-25 00:29:35 +04:00
#include "comp_local.h"
2020-12-28 19:15:37 +04:00
COMP_CTX *
COMP_CTX_new(COMP_METHOD *meth)
{
COMP_CTX *ret;
if ((ret = calloc(1, sizeof(COMP_CTX))) == NULL) {
return (NULL);
}
ret->meth = meth;
if ((ret->meth->init != NULL) && !ret->meth->init(ret)) {
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);
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) {
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) {
return (-1);
}
ret = ctx->meth->expand(ctx, out, olen, in, ilen);
if (ret > 0) {
ctx->expand_in += ilen;
ctx->expand_out += ret;
}
return (ret);
}