132 lines
2.8 KiB
C++
132 lines
2.8 KiB
C++
// Copyright 2012 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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// Thanks to Treeki for writing the original class - 29/01/2012
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#include "Common/SettingsHandler.h"
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#include <cstddef>
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#include <ctime>
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#include <iomanip>
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#include <sstream>
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#include <string>
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#include "Common/CommonTypes.h"
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namespace Common
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{
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SettingsHandler::SettingsHandler()
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{
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Reset();
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}
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SettingsHandler::SettingsHandler(Buffer&& buffer)
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{
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SetBytes(std::move(buffer));
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}
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const SettingsHandler::Buffer& SettingsHandler::GetBytes() const
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{
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return m_buffer;
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}
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void SettingsHandler::SetBytes(Buffer&& buffer)
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{
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Reset();
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m_buffer = std::move(buffer);
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Decrypt();
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}
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std::string SettingsHandler::GetValue(const std::string& key) const
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{
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std::string delim = std::string("\r\n");
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std::string toFind = delim + key + "=";
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size_t found = decoded.find(toFind);
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if (found != decoded.npos)
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{
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size_t delimFound = decoded.find(delim, found + toFind.length());
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if (delimFound == decoded.npos)
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delimFound = decoded.length() - 1;
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return decoded.substr(found + toFind.length(), delimFound - (found + toFind.length()));
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}
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else
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{
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toFind = key + "=";
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found = decoded.find(toFind);
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if (found == 0)
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{
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size_t delimFound = decoded.find(delim, found + toFind.length());
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if (delimFound == decoded.npos)
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delimFound = decoded.length() - 1;
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return decoded.substr(found + toFind.length(), delimFound - (found + toFind.length()));
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}
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}
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return "";
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}
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void SettingsHandler::Decrypt()
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{
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const u8* str = m_buffer.data();
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while (*str != 0)
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{
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if (m_position >= m_buffer.size())
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return;
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decoded.push_back((u8)(m_buffer[m_position] ^ m_key));
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m_position++;
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str++;
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m_key = (m_key >> 31) | (m_key << 1);
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}
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}
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void SettingsHandler::Reset()
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{
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decoded = "";
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m_position = 0;
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m_key = INITIAL_SEED;
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m_buffer = {};
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}
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void SettingsHandler::AddSetting(const std::string& key, const std::string& value)
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{
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for (const char& c : key)
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{
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WriteByte(c);
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}
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WriteByte('=');
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for (const char& c : value)
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{
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WriteByte(c);
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}
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WriteByte(13);
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WriteByte(10);
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}
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void SettingsHandler::WriteByte(u8 b)
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{
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if (m_position >= m_buffer.size())
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return;
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m_buffer[m_position] = b ^ m_key;
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m_position++;
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m_key = (m_key >> 31) | (m_key << 1);
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}
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std::string SettingsHandler::GenerateSerialNumber()
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{
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const std::time_t t = std::time(nullptr);
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// Must be 9 characters at most; otherwise the serial number will be rejected by SDK libraries,
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// as there is a check to ensure the string length is strictly lower than 10.
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// 3 for %j, 2 for %H, 2 for %M, 2 for %S.
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std::stringstream stream;
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stream << std::put_time(std::localtime(&t), "%j%H%M%S");
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return stream.str();
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}
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} // namespace Common
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