72080e79e9
llmath::llround->ll_round LL_ICC->LL_INTELC Add llpredicate Add LL_CPP11 macro Remove llhash Update llinitparam, llsd and all relatives of it.
102 lines
2.8 KiB
C++
102 lines
2.8 KiB
C++
/**
|
|
* @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)
|
|
{
|
|
if (!(input && input_size > 0)) return LLStringUtil::null;
|
|
|
|
// Yes, it returns int.
|
|
int b64_buffer_length = apr_base64_encode_len(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,
|
|
input_size);
|
|
std::string result;
|
|
result.assign(b64_buffer);
|
|
delete[] b64_buffer;
|
|
|
|
return result;
|
|
}
|
|
|
|
// static
|
|
std::string LLBase64::encode(const std::string& in_str)
|
|
{
|
|
size_t data_size = in_str.size();
|
|
std::vector<U8> data;
|
|
data.resize(data_size);
|
|
memcpy(&data[0], in_str.c_str(), data_size);
|
|
return encode(&data[0], data_size);
|
|
}
|
|
|
|
// static
|
|
size_t LLBase64::decode(const std::string& input, U8 * buffer, size_t buffer_size)
|
|
{
|
|
if (input.empty()) return 0;
|
|
|
|
size_t bytes_written = apr_base64_decode_binary(buffer, input.data());
|
|
|
|
return bytes_written;
|
|
}
|
|
|
|
std::string LLBase64::decode(const std::string& input)
|
|
{
|
|
U32 buffer_len = LLBase64::requiredDecryptionSpace(input);
|
|
std::vector<U8> buffer(buffer_len);
|
|
buffer_len = LLBase64::decode(input, &buffer[0], buffer_len);
|
|
buffer.resize(buffer_len);
|
|
return std::string(reinterpret_cast<const char*>(&buffer[0]), buffer_len);
|
|
}
|
|
|
|
// static
|
|
size_t LLBase64::requiredDecryptionSpace(const std::string& str)
|
|
{
|
|
size_t len = str.length();
|
|
U32 padding = 0;
|
|
|
|
if (str[len - 1] == '=' && str[len - 2] == '=') //last two chars are =
|
|
padding = 2;
|
|
else if (str[len - 1] == '=') //last char is =
|
|
padding = 1;
|
|
|
|
return len * 0.75 - padding;
|
|
}
|
|
|