69 lines
1.2 KiB
C
69 lines
1.2 KiB
C
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/* $OpenBSD: comp_lib.c,v 1.8 2014/11/03 16:58:28 tedu Exp $ */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <openssl/objects.h>
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#include <openssl/comp.h>
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COMP_CTX *
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COMP_CTX_new(COMP_METHOD *meth)
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{
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COMP_CTX *ret;
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if ((ret = calloc(1, sizeof(COMP_CTX))) == NULL) {
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return (NULL);
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}
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ret->meth = meth;
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if ((ret->meth->init != NULL) && !ret->meth->init(ret)) {
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free(ret);
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ret = NULL;
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}
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return (ret);
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}
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void
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COMP_CTX_free(COMP_CTX *ctx)
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{
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if (ctx == NULL)
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return;
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if (ctx->meth->finish != NULL)
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ctx->meth->finish(ctx);
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free(ctx);
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}
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int
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COMP_compress_block(COMP_CTX *ctx, unsigned char *out, int olen,
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unsigned char *in, int ilen)
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{
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int ret;
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if (ctx->meth->compress == NULL) {
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return (-1);
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}
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ret = ctx->meth->compress(ctx, out, olen, in, ilen);
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if (ret > 0) {
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ctx->compress_in += ilen;
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ctx->compress_out += ret;
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}
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return (ret);
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}
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int
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COMP_expand_block(COMP_CTX *ctx, unsigned char *out, int olen,
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unsigned char *in, int ilen)
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{
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int ret;
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if (ctx->meth->expand == NULL) {
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return (-1);
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}
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ret = ctx->meth->expand(ctx, out, olen, in, ilen);
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if (ret > 0) {
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ctx->expand_in += ilen;
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ctx->expand_out += ret;
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}
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return (ret);
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}
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