crypto/openssl-0.9.7d/crypto/comp/comp_lib.c

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