include/openssl/buffer.h

   1 /*
   2  * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the OpenSSL license (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 #ifndef HEADER_BUFFER_H
  11 # define HEADER_BUFFER_H
  12
  13 # include <openssl/ossl_typ.h>
  14 # ifndef HEADER_CRYPTO_H
  15 #  include <openssl/crypto.h>
  16 # endif
  17
  18
  19 #ifdef  __cplusplus
  20 extern "C" {
  21 #endif
  22
  23 # include <stddef.h>
  24
  25 # if !defined(NO_SYS_TYPES_H)
  26 #  include <sys/types.h>
  27 # endif
  28
  29 /*
  30  * These names are outdated as of OpenSSL 1.1; a future release
  31  * will move them to be deprecated.
  32  */
  33 # define BUF_strdup(s) OPENSSL_strdup(s)
  34 # define BUF_strndup(s, size) OPENSSL_strndup(s, size)
  35 # define BUF_memdup(data, size) OPENSSL_memdup(data, size)
  36 # define BUF_strlcpy(dst, src, size)  OPENSSL_strlcpy(dst, src, size)
  37 # define BUF_strlcat(dst, src, size) OPENSSL_strlcat(dst, src, size)
  38 # define BUF_strnlen(str, maxlen) OPENSSL_strnlen(str, maxlen)
  39
  40 struct buf_mem_st {
  41     size_t length;              /* current number of bytes */
  42     char *data;
  43     size_t max;                 /* size of buffer */
  44     unsigned long flags;
  45 };
  46
  47 # define BUF_MEM_FLAG_SECURE  0x01
  48
  49 BUF_MEM *BUF_MEM_new(void);
  50 BUF_MEM *BUF_MEM_new_ex(unsigned long flags);
  51 void BUF_MEM_free(BUF_MEM *a);
  52 size_t BUF_MEM_grow(BUF_MEM *str, size_t len);
  53 size_t BUF_MEM_grow_clean(BUF_MEM *str, size_t len);
  54 void BUF_reverse(unsigned char *out, const unsigned char *in, size_t siz);
  55
  56 /* BEGIN ERROR CODES */
  57 /*
  58  * The following lines are auto generated by the script mkerr.pl. Any changes
  59  * made after this point may be overwritten when the script is next run.
  60  */
  61 void ERR_load_BUF_strings(void);
  62
  63 /* Error codes for the BUF functions. */
  64
  65 /* Function codes. */
  66 # define BUF_F_BUF_MEM_GROW                               100
  67 # define BUF_F_BUF_MEM_GROW_CLEAN                         105
  68 # define BUF_F_BUF_MEM_NEW                                101
  69
  70 /* Reason codes. */
  71
  72 #ifdef  __cplusplus
  73 }
  74 #endif
  75 #endif