crypto/comp/comp_lib.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4 #include "objects.h"
   5 #include "comp.h"
   6
   7 COMP_CTX *COMP_CTX_new(meth)
   8 COMP_METHOD *meth;
   9         {
  10         COMP_CTX *ret;
  11
  12         if ((ret=(COMP_CTX *)Malloc(sizeof(COMP_CTX))) == NULL)
  13                 {
  14                 /* ZZZZZZZZZZZZZZZZ */
  15                 return(NULL);
  16                 }
  17         memset(ret,0,sizeof(COMP_CTX));
  18         ret->meth=meth;
  19         if ((ret->meth->init != NULL) && !ret->meth->init(ret))
  20                 {
  21                 Free(ret);
  22                 ret=NULL;
  23                 }
  24 #if 0
  25         else
  26                 CRYPTO_new_ex_data(rsa_meth,(char *)ret,&ret->ex_data);
  27 #endif
  28         return(ret);
  29         }
  30
  31 void COMP_CTX_free(ctx)
  32 COMP_CTX *ctx;
  33         {
  34         /* CRYPTO_free_ex_data(rsa_meth,(char *)ctx,&ctx->ex_data); */
  35
  36         if (ctx->meth->finish != NULL)
  37                 ctx->meth->finish(ctx);
  38
  39         Free(ctx);
  40         }
  41
  42 int COMP_compress_block(ctx,out,olen,in,ilen)
  43 COMP_CTX *ctx;
  44 unsigned char *out;
  45 int olen;
  46 unsigned char *in;
  47 int ilen;
  48         {
  49         int ret;
  50         if (ctx->meth->compress == NULL)
  51                 {
  52                 /* ZZZZZZZZZZZZZZZZZ */
  53                 return(-1);
  54                 }
  55         ret=ctx->meth->compress(ctx,out,olen,in,ilen);
  56         if (ret > 0)
  57                 {
  58                 ctx->compress_in+=ilen;
  59                 ctx->compress_out+=ret;
  60                 }
  61         return(ret);
  62         }
  63
  64 int COMP_expand_block(ctx,out,olen,in,ilen)
  65 COMP_CTX *ctx;
  66 unsigned char *out;
  67 int olen;
  68 unsigned char *in;
  69 int ilen;
  70         {
  71         int ret;
  72
  73         if (ctx->meth->expand == NULL)
  74                 {
  75                 /* ZZZZZZZZZZZZZZZZZ */
  76                 return(-1);
  77                 }
  78         ret=ctx->meth->expand(ctx,out,olen,in,ilen);
  79         if (ret > 0)
  80                 {
  81                 ctx->expand_in+=ilen;
  82                 ctx->expand_out+=ret;
  83                 }
  84         return(ret);
  85         }