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diff --git a/contrib/epee/include/string_coding.h b/contrib/epee/include/string_coding.h
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+// Copyright (c) 2006-2013, Andrey N. Sabelnikov, www.sabelnikov.net
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above copyright
+// notice, this list of conditions and the following disclaimer in the
+// documentation and/or other materials provided with the distribution.
+// * Neither the name of the Andrey N. Sabelnikov nor the
+// names of its contributors may be used to endorse or promote products
+// derived from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER BE LIABLE FOR ANY
+// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+
+
+#ifndef _STRING_CODING_H_
+#define _STRING_CODING_H_
+
+#include <string>
+//#include "md5_l.h"
+namespace epee
+{
+namespace string_encoding
+{
+ inline std::string convert_to_ansii(const std::wstring& str_from)
+ {
+
+ std::string res(str_from.begin(), str_from.end());
+ return res;
+ /*
+ std::string result;
+ std::locale loc;
+ for(unsigned int i= 0; i < str_from.size(); ++i)
+ {
+ result += std::use_facet<std::ctype<wchar_t> >(loc).narrow(str_from[i]);
+ }
+ return result;
+ */
+
+ //return boost::lexical_cast<std::string>(str_from);
+ /*
+ std::string str_trgt;
+ if(!str_from.size())
+ return str_trgt;
+ int cb = ::WideCharToMultiByte( code_page, 0, str_from.data(), (__int32)str_from.size(), 0, 0, 0, 0 );
+ if(!cb)
+ return str_trgt;
+ str_trgt.resize(cb);
+ ::WideCharToMultiByte( code_page, 0, str_from.data(), (int)str_from.size(),
+ (char*)str_trgt.data(), (int)str_trgt.size(), 0, 0);
+ return str_trgt;*/
+ }
+#ifdef WINDOWS_PLATFORM_EX
+ inline std::string convert_to_ansii_win(const std::wstring& str_from)
+ {
+
+ int code_page = CP_ACP;
+ std::string str_trgt;
+ if(!str_from.size())
+ return str_trgt;
+ int cb = ::WideCharToMultiByte( code_page, 0, str_from.data(), (__int32)str_from.size(), 0, 0, 0, 0 );
+ if(!cb)
+ return str_trgt;
+ str_trgt.resize(cb);
+ ::WideCharToMultiByte( code_page, 0, str_from.data(), (int)str_from.size(),
+ (char*)str_trgt.data(), (int)str_trgt.size(), 0, 0);
+ return str_trgt;
+ }
+#endif
+
+ inline std::string convert_to_ansii(const std::string& str_from)
+ {
+ return str_from;
+ }
+
+ inline std::wstring convert_to_unicode(const std::string& str_from)
+ {
+ std::wstring result;
+ std::locale loc;
+ for(unsigned int i= 0; i < str_from.size(); ++i)
+ {
+ result += std::use_facet<std::ctype<wchar_t> >(loc).widen(str_from[i]);
+ }
+ return result;
+
+ //return boost::lexical_cast<std::wstring>(str_from);
+ /*
+ std::wstring str_trgt;
+ if(!str_from.size())
+ return str_trgt;
+
+ int cb = ::MultiByteToWideChar( code_page, 0, str_from.data(), (int)str_from.size(), 0, 0 );
+ if(!cb)
+ return str_trgt;
+
+ str_trgt.resize(cb);
+ ::MultiByteToWideChar( code_page, 0, str_from.data(),(int)str_from.size(),
+ (wchar_t*)str_trgt.data(),(int)str_trgt.size());
+ return str_trgt;*/
+ }
+ inline std::wstring convert_to_unicode(const std::wstring& str_from)
+ {
+ return str_from;
+ }
+
+ template<class target_string>
+ inline target_string convert_to_t(const std::wstring& str_from);
+
+ template<>
+ inline std::string convert_to_t<std::string>(const std::wstring& str_from)
+ {
+ return convert_to_ansii(str_from);
+ }
+
+ template<>
+ inline std::wstring convert_to_t<std::wstring>(const std::wstring& str_from)
+ {
+ return str_from;
+ }
+
+ template<class target_string>
+ inline target_string convert_to_t(const std::string& str_from);
+
+ template<>
+ inline std::string convert_to_t<std::string>(const std::string& str_from)
+ {
+ return str_from;
+ }
+
+ template<>
+ inline std::wstring convert_to_t<std::wstring>(const std::string& str_from)
+ {
+ return convert_to_unicode(str_from);
+ }
+
+ inline
+ std::string& base64_chars()
+ {
+
+ static std::string chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+ "abcdefghijklmnopqrstuvwxyz"
+ "0123456789+/";
+
+ return chars;
+
+ }
+
+ inline
+ std::string base64_encode(unsigned char const* bytes_to_encode, size_t in_len) {
+ std::string ret;
+ int i = 0;
+ int j = 0;
+ unsigned char char_array_3[3];
+ unsigned char char_array_4[4];
+
+ while (in_len--) {
+ char_array_3[i++] = *(bytes_to_encode++);
+ if (i == 3) {
+ char_array_4[0] = (char_array_3[0] & 0xfc) >> 2;
+ char_array_4[1] = ((char_array_3[0] & 0x03) << 4) + ((char_array_3[1] & 0xf0) >> 4);
+ char_array_4[2] = ((char_array_3[1] & 0x0f) << 2) + ((char_array_3[2] & 0xc0) >> 6);
+ char_array_4[3] = char_array_3[2] & 0x3f;
+
+ for(i = 0; (i <4) ; i++)
+ ret += base64_chars()[char_array_4[i]];
+ i = 0;
+ }
+ }
+
+ if (i)
+ {
+ for(j = i; j < 3; j++)
+ char_array_3[j] = '\0';
+
+ char_array_4[0] = (char_array_3[0] & 0xfc) >> 2;
+ char_array_4[1] = ((char_array_3[0] & 0x03) << 4) + ((char_array_3[1] & 0xf0) >> 4);
+ char_array_4[2] = ((char_array_3[1] & 0x0f) << 2) + ((char_array_3[2] & 0xc0) >> 6);
+ char_array_4[3] = char_array_3[2] & 0x3f;
+
+ for (j = 0; (j < i + 1); j++)
+ ret += base64_chars()[char_array_4[j]];
+
+ while((i++ < 3))
+ ret += '=';
+
+ }
+
+ return ret;
+
+ }
+
+ inline
+ std::string base64_encode(const std::string& str)
+ {
+ return base64_encode((unsigned char const* )str.data(), str.size());
+ }
+
+ inline bool is_base64(unsigned char c) {
+ return (isalnum(c) || (c == '+') || (c == '/'));
+ }
+
+
+ inline
+ std::string base64_decode(std::string const& encoded_string) {
+ size_t in_len = encoded_string.size();
+ size_t i = 0;
+ size_t j = 0;
+ size_t in_ = 0;
+ unsigned char char_array_4[4], char_array_3[3];
+ std::string ret;
+
+ while (in_len-- && ( encoded_string[in_] != '=') && is_base64(encoded_string[in_])) {
+ char_array_4[i++] = encoded_string[in_]; in_++;
+ if (i ==4) {
+ for (i = 0; i <4; i++)
+ char_array_4[i] = (unsigned char)base64_chars().find(char_array_4[i]);
+
+ char_array_3[0] = (char_array_4[0] << 2) + ((char_array_4[1] & 0x30) >> 4);
+ char_array_3[1] = ((char_array_4[1] & 0xf) << 4) + ((char_array_4[2] & 0x3c) >> 2);
+ char_array_3[2] = ((char_array_4[2] & 0x3) << 6) + char_array_4[3];
+
+ for (i = 0; (i < 3); i++)
+ ret += char_array_3[i];
+ i = 0;
+ }
+ }
+
+ if (i) {
+ for (j = i; j <4; j++)
+ char_array_4[j] = 0;
+
+ for (j = 0; j <4; j++)
+ char_array_4[j] = (unsigned char)base64_chars().find(char_array_4[j]);
+
+ char_array_3[0] = (char_array_4[0] << 2) + ((char_array_4[1] & 0x30) >> 4);
+ char_array_3[1] = ((char_array_4[1] & 0xf) << 4) + ((char_array_4[2] & 0x3c) >> 2);
+ char_array_3[2] = ((char_array_4[2] & 0x3) << 6) + char_array_4[3];
+
+ for (j = 0; (j < i - 1); j++) ret += char_array_3[j];
+ }
+
+ return ret;
+ }
+
+ //md5
+#ifdef MD5_H
+ inline
+ std::string get_buf_as_hex_string(const void* pbuf, size_t len)
+ {
+ std::ostringstream result;
+
+ const unsigned char* p_buff = (const unsigned char*)pbuf;
+
+ for(unsigned int i=0;i<len;i++)
+ { // convert md to hex-represented string (hex-letters in upper case!)
+ result << std::setw(2) << std::setfill('0')
+ << std::setbase(16) << std::nouppercase
+ << (int)*p_buff++;
+ }
+
+ return result.str();
+ }
+
+ inline
+ std::string get_md5_as_hexstring(const void* pbuff, size_t len)
+ {
+ unsigned char output[16] = {0};
+ md5::md5((unsigned char*)pbuff, static_cast<unsigned int>(len), output);
+ return get_buf_as_hex_string(output, sizeof(output));
+ }
+
+ inline
+ std::string get_md5_as_hexstring(const std::string& src)
+ {
+ return get_md5_as_hexstring(src.data(), src.size());
+ }
+#endif
+
+
+}
+}
+
+#endif //_STRING_CODING_H_
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