package/px5g/src/polarssl/base64.h

   1 /**
   2  * \file base64.h
   3  *
   4  *  Based on XySSL: Copyright (C) 2006-2008  Christophe Devine
   5  *
   6  *  Copyright (C) 2009  Paul Bakker <polarssl_maintainer at polarssl dot org>
   7  *
   8  *  All rights reserved.
   9  *
  10  *  Redistribution and use in source and binary forms, with or without
  11  *  modification, are permitted provided that the following conditions
  12  *  are met:
  13  *
  14  *    * Redistributions of source code must retain the above copyright
  15  *      notice, this list of conditions and the following disclaimer.
  16  *    * Redistributions in binary form must reproduce the above copyright
  17  *      notice, this list of conditions and the following disclaimer in the
  18  *      documentation and/or other materials provided with the distribution.
  19  *    * Neither the names of PolarSSL or XySSL nor the names of its contributors
  20  *      may be used to endorse or promote products derived from this software
  21  *      without specific prior written permission.
  22  *
  23  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  24  *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  25  *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  26  *  FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  27  *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  28  *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
  29  *  TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  30  *  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  31  *  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  32  *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  33  *  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  34  */
  35 #ifndef POLARSSL_BASE64_H
  36 #define POLARSSL_BASE64_H
  37
  38 #define POLARSSL_ERR_BASE64_BUFFER_TOO_SMALL               -0x0010
  39 #define POLARSSL_ERR_BASE64_INVALID_CHARACTER              -0x0012
  40
  41 #ifdef __cplusplus
  42 extern "C" {
  43 #endif
  44
  45 /**
  46  * \brief          Encode a buffer into base64 format
  47  *
  48  * \param dst      destination buffer
  49  * \param dlen     size of the buffer
  50  * \param src      source buffer
  51  * \param slen     amount of data to be encoded
  52  *
  53  * \return         0 if successful, or POLARSSL_ERR_BASE64_BUFFER_TOO_SMALL.
  54  *                 *dlen is always updated to reflect the amount
  55  *                 of data that has (or would have) been written.
  56  *
  57  * \note           Call this function with *dlen = 0 to obtain the
  58  *                 required buffer size in *dlen
  59  */
  60 int base64_encode( unsigned char *dst, int *dlen,
  61                    unsigned char *src, int  slen );
  62
  63 /**
  64  * \brief          Decode a base64-formatted buffer
  65  *
  66  * \param dst      destination buffer
  67  * \param dlen     size of the buffer
  68  * \param src      source buffer
  69  * \param slen     amount of data to be decoded
  70  *
  71  * \return         0 if successful, POLARSSL_ERR_BASE64_BUFFER_TOO_SMALL, or
  72  *                 POLARSSL_ERR_BASE64_INVALID_DATA if the input data is not
  73  *                 correct. *dlen is always updated to reflect the amount
  74  *                 of data that has (or would have) been written.
  75  *
  76  * \note           Call this function with *dlen = 0 to obtain the
  77  *                 required buffer size in *dlen
  78  */
  79 int base64_decode( unsigned char *dst, int *dlen,
  80                    unsigned char *src, int  slen );
  81
  82 /**
  83  * \brief          Checkup routine
  84  *
  85  * \return         0 if successful, or 1 if the test failed
  86  */
  87 int base64_self_test( int verbose );
  88
  89 #ifdef __cplusplus
  90 }
  91 #endif
  92
  93 #endif /* base64.h */