dolphin/Source/Core/Common/SettingsHandler.cpp

148 lines
3.2 KiB
C++

// Copyright 2012 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
// Thanks to Treeki for writing the original class - 29/01/2012
#include <cstddef>
#include <cstdio>
#include <cstring>
#include <ctime>
#include <iomanip>
#include <sstream>
#include <string>
#ifdef _WIN32
#include <windows.h>
#include <mmsystem.h>
#include <sys/timeb.h>
#endif
#include "Common/CommonTypes.h"
#include "Common/File.h"
#include "Common/FileUtil.h"
#include "Common/SettingsHandler.h"
#include "Common/Timer.h"
SettingsHandler::SettingsHandler()
{
Reset();
}
bool SettingsHandler::Open(const std::string& settings_file_path)
{
Reset();
File::IOFile file{settings_file_path, "rb"};
if (!file.ReadBytes(m_buffer.data(), m_buffer.size()))
return false;
Decrypt();
return true;
}
bool SettingsHandler::Save(const std::string& destination_file_path) const
{
if (!File::CreateFullPath(destination_file_path))
return false;
File::IOFile file{destination_file_path, "wb"};
return file.WriteBytes(m_buffer.data(), m_buffer.size());
}
const u8* SettingsHandler::GetData() const
{
return m_buffer.data();
}
const std::string SettingsHandler::GetValue(const std::string& key)
{
std::string delim = std::string("\r\n");
std::string toFind = delim + key + "=";
size_t found = decoded.find(toFind);
if (found != decoded.npos)
{
size_t delimFound = decoded.find(delim, found + toFind.length());
if (delimFound == decoded.npos)
delimFound = decoded.length() - 1;
return decoded.substr(found + toFind.length(), delimFound - (found + toFind.length()));
}
else
{
toFind = key + "=";
found = decoded.find(toFind);
if (found == 0)
{
size_t delimFound = decoded.find(delim, found + toFind.length());
if (delimFound == decoded.npos)
delimFound = decoded.length() - 1;
return decoded.substr(found + toFind.length(), delimFound - (found + toFind.length()));
}
}
return "";
}
void SettingsHandler::Decrypt()
{
const u8* str = m_buffer.data();
while (*str != 0)
{
if (m_position >= m_buffer.size())
return;
decoded.push_back((u8)(m_buffer[m_position] ^ m_key));
m_position++;
str++;
m_key = (m_key >> 31) | (m_key << 1);
}
}
void SettingsHandler::Reset()
{
decoded = "";
m_position = 0;
m_key = INITIAL_SEED;
m_buffer = {};
}
void SettingsHandler::AddSetting(const std::string& key, const std::string& value)
{
for (const char& c : key)
{
WriteByte(c);
}
WriteByte('=');
for (const char& c : value)
{
WriteByte(c);
}
WriteByte(13);
WriteByte(10);
}
void SettingsHandler::WriteByte(u8 b)
{
if (m_position >= m_buffer.size())
return;
m_buffer[m_position] = b ^ m_key;
m_position++;
m_key = (m_key >> 31) | (m_key << 1);
}
std::string SettingsHandler::GenerateSerialNumber()
{
const std::time_t t = std::time(nullptr);
// Must be 9 characters at most; otherwise the serial number will be rejected by SDK libraries,
// as there is a check to ensure the string length is strictly lower than 10.
// 3 for %j, 2 for %H, 2 for %M, 2 for %S.
std::stringstream stream;
stream << std::put_time(std::localtime(&t), "%j%H%M%S");
return stream.str();
}