mirror of
https://github.com/oxen-io/session-android.git
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73 lines
1.2 KiB
C
73 lines
1.2 KiB
C
#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 *COMP_CTX_new(COMP_METHOD *meth)
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{
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COMP_CTX *ret;
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if ((ret=(COMP_CTX *)OPENSSL_malloc(sizeof(COMP_CTX))) == NULL)
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{
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/* ZZZZZZZZZZZZZZZZ */
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return(NULL);
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}
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memset(ret,0,sizeof(COMP_CTX));
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ret->meth=meth;
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if ((ret->meth->init != NULL) && !ret->meth->init(ret))
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{
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OPENSSL_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 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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OPENSSL_free(ctx);
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}
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int 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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{
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/* ZZZZZZZZZZZZZZZZZ */
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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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{
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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 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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{
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/* ZZZZZZZZZZZZZZZZZ */
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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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{
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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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