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       1                 :            : /* base64.c --- Base64 encoding/decoding functions.
       2                 :            :  * Copyright (C) 2002-2012 Simon Josefsson
       3                 :            :  *
       4                 :            :  * This file is part of GNU SASL Library.
       5                 :            :  *
       6                 :            :  * GNU SASL Library is free software; you can redistribute it and/or
       7                 :            :  * modify it under the terms of the GNU Lesser General Public License
       8                 :            :  * as published by the Free Software Foundation; either version 2.1 of
       9                 :            :  * the License, or (at your option) any later version.
      10                 :            :  *
      11                 :            :  * GNU SASL Library is distributed in the hope that it will be useful,
      12                 :            :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      13                 :            :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      14                 :            :  * Lesser General Public License for more details.
      15                 :            :  *
      16                 :            :  * You should have received a copy of the GNU Lesser General Public
      17                 :            :  * License License along with GNU SASL Library; if not, write to the
      18                 :            :  * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
      19                 :            :  * Boston, MA 02110-1301, USA.
      20                 :            :  *
      21                 :            :  */
      22                 :            : 
      23                 :            : #include "internal.h"
      24                 :            : 
      25                 :            : #include "base64.h"
      26                 :            : 
      27                 :            : /**
      28                 :            :  * gsasl_base64_to:
      29                 :            :  * @in: input byte array
      30                 :            :  * @inlen: size of input byte array
      31                 :            :  * @out: pointer to newly allocated output byte array
      32                 :            :  * @outlen: pointer to size of newly allocated output byte array
      33                 :            :  *
      34                 :            :  * Encode data as base64.  The string is zero terminated, and @outlen
      35                 :            :  * holds the length excluding the terminating zero.  The @out buffer
      36                 :            :  * must be deallocated by the caller.
      37                 :            :  *
      38                 :            :  * Return value: Returns %GSASL_OK on success, or %GSASL_MALLOC_ERROR
      39                 :            :  *   if input was too large or memory allocation fail.
      40                 :            :  *
      41                 :            :  * Since: 0.2.2
      42                 :            :  **/
      43                 :            : int
      44                 :        489 : gsasl_base64_to (const char *in, size_t inlen, char **out, size_t * outlen)
      45                 :            : {
      46                 :        489 :   size_t len = base64_encode_alloc (in, inlen, out);
      47                 :            : 
      48         [ +  + ]:        489 :   if (outlen)
      49                 :          3 :     *outlen = len;
      50                 :            : 
      51         [ -  + ]:        489 :   if (*out == NULL)
      52                 :          0 :     return GSASL_MALLOC_ERROR;
      53                 :            : 
      54                 :        489 :   return GSASL_OK;
      55                 :            : }
      56                 :            : 
      57                 :            : /**
      58                 :            :  * gsasl_base64_from:
      59                 :            :  * @in: input byte array
      60                 :            :  * @inlen: size of input byte array
      61                 :            :  * @out: pointer to newly allocated output byte array
      62                 :            :  * @outlen: pointer to size of newly allocated output byte array
      63                 :            :  *
      64                 :            :  * Decode Base64 data.  The @out buffer must be deallocated by the
      65                 :            :  * caller.
      66                 :            :  *
      67                 :            :  * Return value: Returns %GSASL_OK on success, %GSASL_BASE64_ERROR if
      68                 :            :  *   input was invalid, and %GSASL_MALLOC_ERROR on memory allocation
      69                 :            :  *   errors.
      70                 :            :  *
      71                 :            :  * Since: 0.2.2
      72                 :            :  **/
      73                 :            : int
      74                 :        312 : gsasl_base64_from (const char *in, size_t inlen, char **out, size_t * outlen)
      75                 :            : {
      76                 :        312 :   int ok = base64_decode_alloc (in, inlen, out, outlen);
      77                 :            : 
      78         [ -  + ]:        312 :   if (!ok)
      79                 :          0 :     return GSASL_BASE64_ERROR;
      80                 :            : 
      81         [ -  + ]:        312 :   if (*out == NULL)
      82                 :          0 :     return GSASL_MALLOC_ERROR;
      83                 :            : 
      84                 :        312 :   return GSASL_OK;
      85                 :            : }