1656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <stdio.h> 2656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <stdlib.h> 3656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <string.h> 4656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <openssl/objects.h> 5656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <openssl/comp.h> 6656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 7656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source ProjectCOMP_CTX *COMP_CTX_new(COMP_METHOD *meth) 8656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 9656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project COMP_CTX *ret; 10656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 11656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if ((ret=(COMP_CTX *)OPENSSL_malloc(sizeof(COMP_CTX))) == NULL) 12656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 13656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project /* ZZZZZZZZZZZZZZZZ */ 14656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(NULL); 15656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 16656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project memset(ret,0,sizeof(COMP_CTX)); 17656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret->meth=meth; 18656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if ((ret->meth->init != NULL) && !ret->meth->init(ret)) 19656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 20656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project OPENSSL_free(ret); 21656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret=NULL; 22656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 23656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(ret); 24656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 25656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 26656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectvoid COMP_CTX_free(COMP_CTX *ctx) 27656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 28656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if(ctx == NULL) 29656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return; 30656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 31656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (ctx->meth->finish != NULL) 32656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ctx->meth->finish(ctx); 33656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 34656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project OPENSSL_free(ctx); 35656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 36656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 37656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint COMP_compress_block(COMP_CTX *ctx, unsigned char *out, int olen, 38656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned char *in, int ilen) 39656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 40656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project int ret; 41656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (ctx->meth->compress == NULL) 42656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 43656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project /* ZZZZZZZZZZZZZZZZZ */ 44656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(-1); 45656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 46656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret=ctx->meth->compress(ctx,out,olen,in,ilen); 47656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (ret > 0) 48656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 49656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ctx->compress_in+=ilen; 50656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ctx->compress_out+=ret; 51656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 52656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(ret); 53656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 54656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 55656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint COMP_expand_block(COMP_CTX *ctx, unsigned char *out, int olen, 56656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned char *in, int ilen) 57656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 58656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project int ret; 59656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 60656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (ctx->meth->expand == NULL) 61656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 62656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project /* ZZZZZZZZZZZZZZZZZ */ 63656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(-1); 64656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 65656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret=ctx->meth->expand(ctx,out,olen,in,ilen); 66656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (ret > 0) 67656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 68656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ctx->expand_in+=ilen; 69656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ctx->expand_out+=ret; 70656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 71656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(ret); 72656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 73