crypto/comp/comp_lcl.h

   1 /*
   2  * Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 struct comp_method_st {
  11     int type;                   /* NID for compression library */
  12     const char *name;           /* A text string to identify the library */
  13     int (*init) (COMP_CTX *ctx);
  14     void (*finish) (COMP_CTX *ctx);
  15     int (*compress) (COMP_CTX *ctx,
  16                      unsigned char *out, unsigned int olen,
  17                      unsigned char *in, unsigned int ilen);
  18     int (*expand) (COMP_CTX *ctx,
  19                    unsigned char *out, unsigned int olen,
  20                    unsigned char *in, unsigned int ilen);
  21 };
  22
  23 struct comp_ctx_st {
  24     struct comp_method_st *meth;
  25     unsigned long compress_in;
  26     unsigned long compress_out;
  27     unsigned long expand_in;
  28     unsigned long expand_out;
  29     void* data;
  30 };