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/**
* @file llbase64.cpp
* @brief Wrapper for apr base64 encoding that returns a std::string
* @author James Cook
*
* $LicenseInfo:firstyear=2007&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#include "linden_common.h"
#include "llbase64.h"
#include <string>
#include "apr_base64.h"
// static
std::string LLBase64::encode(const U8* input, size_t input_size)
{
std::string output;
if (input
&& input_size > 0)
{
// Yes, it returns int.
int b64_buffer_length = apr_base64_encode_len(narrow<size_t>(input_size));
char* b64_buffer = new char[b64_buffer_length];
// This is faster than apr_base64_encode() if you know
// you're not on an EBCDIC machine. Also, the output is
// null terminated, even though the documentation doesn't
// specify. See apr_base64.c for details. JC
b64_buffer_length = apr_base64_encode_binary(
b64_buffer,
input,
narrow<size_t>(input_size));
output.assign(b64_buffer);
delete[] b64_buffer;
}
return output;
}
std::string LLBase64::decodeAsString(const std::string &input)
{
int b64_buffer_length = apr_base64_decode_len(input.c_str());
char* b64_buffer = new char[b64_buffer_length];
// This is faster than apr_base64_encode() if you know
// you're not on an EBCDIC machine. Also, the output is
// null terminated, even though the documentation doesn't
// specify. See apr_base64.c for details. JC
b64_buffer_length = apr_base64_decode(b64_buffer, input.c_str());
std::string res;
res.assign(b64_buffer);
delete[] b64_buffer;
return res;
}
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