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 = OPENSSL_malloc(sizeof(*ret))) == NULL) {
  12         /* ZZZZZZZZZZZZZZZZ */
  13         return (NULL);
  14     }
  15     memset(ret, 0, sizeof(*ret));
  16     ret->meth = meth;
  17     if ((ret->meth->init != NULL) && !ret->meth->init(ret)) {
  18         OPENSSL_free(ret);
  19         ret = NULL;
  20     }
  21     return (ret);
  22 }
  23
  24 void COMP_CTX_free(COMP_CTX *ctx)
  25 {
  26     if (ctx == NULL)
  27         return;
  28
  29     if (ctx->meth->finish != NULL)
  30         ctx->meth->finish(ctx);
  31
  32     OPENSSL_free(ctx);
  33 }
  34
  35 int COMP_compress_block(COMP_CTX *ctx, unsigned char *out, int olen,
  36                         unsigned char *in, int ilen)
  37 {
  38     int ret;
  39     if (ctx->meth->compress == NULL) {
  40         /* ZZZZZZZZZZZZZZZZZ */
  41         return (-1);
  42     }
  43     ret = ctx->meth->compress(ctx, out, olen, in, ilen);
  44     if (ret > 0) {
  45         ctx->compress_in += ilen;
  46         ctx->compress_out += ret;
  47     }
  48     return (ret);
  49 }
  50
  51 int COMP_expand_block(COMP_CTX *ctx, unsigned char *out, int olen,
  52                       unsigned char *in, int ilen)
  53 {
  54     int ret;
  55
  56     if (ctx->meth->expand == NULL) {
  57         /* ZZZZZZZZZZZZZZZZZ */
  58         return (-1);
  59     }
  60     ret = ctx->meth->expand(ctx, out, olen, in, ilen);
  61     if (ret > 0) {
  62         ctx->expand_in += ilen;
  63         ctx->expand_out += ret;
  64     }
  65     return (ret);
  66 }