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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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} |