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Luca D'Amico
2021-03-01 18:56:19 +01:00
parent c8fc9006f2
commit 658ca1b74c
19 changed files with 35 additions and 31 deletions
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43
ndsfactory/crctable.h Normal file
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#ifndef CRCTABLE_H
#define CRCTABLE_H
#include <cstdint>
static const uint16_t lCRCTable[] =
{
0x0000, 0xC0C1, 0xC181, 0x0140, 0xC301, 0x03C0, 0x0280, 0xC241,
0xC601, 0x06C0, 0x0780, 0xC741, 0x0500, 0xC5C1, 0xC481, 0x0440,
0xCC01, 0x0CC0, 0x0D80, 0xCD41, 0x0F00, 0xCFC1, 0xCE81, 0x0E40,
0x0A00, 0xCAC1, 0xCB81, 0x0B40, 0xC901, 0x09C0, 0x0880, 0xC841,
0xD801, 0x18C0, 0x1980, 0xD941, 0x1B00, 0xDBC1, 0xDA81, 0x1A40,
0x1E00, 0xDEC1, 0xDF81, 0x1F40, 0xDD01, 0x1DC0, 0x1C80, 0xDC41,
0x1400, 0xD4C1, 0xD581, 0x1540, 0xD701, 0x17C0, 0x1680, 0xD641,
0xD201, 0x12C0, 0x1380, 0xD341, 0x1100, 0xD1C1, 0xD081, 0x1040,
0xF001, 0x30C0, 0x3180, 0xF141, 0x3300, 0xF3C1, 0xF281, 0x3240,
0x3600, 0xF6C1, 0xF781, 0x3740, 0xF501, 0x35C0, 0x3480, 0xF441,
0x3C00, 0xFCC1, 0xFD81, 0x3D40, 0xFF01, 0x3FC0, 0x3E80, 0xFE41,
0xFA01, 0x3AC0, 0x3B80, 0xFB41, 0x3900, 0xF9C1, 0xF881, 0x3840,
0x2800, 0xE8C1, 0xE981, 0x2940, 0xEB01, 0x2BC0, 0x2A80, 0xEA41,
0xEE01, 0x2EC0, 0x2F80, 0xEF41, 0x2D00, 0xEDC1, 0xEC81, 0x2C40,
0xE401, 0x24C0, 0x2580, 0xE541, 0x2700, 0xE7C1, 0xE681, 0x2640,
0x2200, 0xE2C1, 0xE381, 0x2340, 0xE101, 0x21C0, 0x2080, 0xE041,
0xA001, 0x60C0, 0x6180, 0xA141, 0x6300, 0xA3C1, 0xA281, 0x6240,
0x6600, 0xA6C1, 0xA781, 0x6740, 0xA501, 0x65C0, 0x6480, 0xA441,
0x6C00, 0xACC1, 0xAD81, 0x6D40, 0xAF01, 0x6FC0, 0x6E80, 0xAE41,
0xAA01, 0x6AC0, 0x6B80, 0xAB41, 0x6900, 0xA9C1, 0xA881, 0x6840,
0x7800, 0xB8C1, 0xB981, 0x7940, 0xBB01, 0x7BC0, 0x7A80, 0xBA41,
0xBE01, 0x7EC0, 0x7F80, 0xBF41, 0x7D00, 0xBDC1, 0xBC81, 0x7C40,
0xB401, 0x74C0, 0x7580, 0xB541, 0x7700, 0xB7C1, 0xB681, 0x7640,
0x7200, 0xB2C1, 0xB381, 0x7340, 0xB101, 0x71C0, 0x7080, 0xB041,
0x5000, 0x90C1, 0x9181, 0x5140, 0x9301, 0x53C0, 0x5280, 0x9241,
0x9601, 0x56C0, 0x5780, 0x9741, 0x5500, 0x95C1, 0x9481, 0x5440,
0x9C01, 0x5CC0, 0x5D80, 0x9D41, 0x5F00, 0x9FC1, 0x9E81, 0x5E40,
0x5A00, 0x9AC1, 0x9B81, 0x5B40, 0x9901, 0x59C0, 0x5880, 0x9841,
0x8801, 0x48C0, 0x4980, 0x8941, 0x4B00, 0x8BC1, 0x8A81, 0x4A40,
0x4E00, 0x8EC1, 0x8F81, 0x4F40, 0x8D01, 0x4DC0, 0x4C80, 0x8C41,
0x4400, 0x84C1, 0x8581, 0x4540, 0x8701, 0x47C0, 0x4680, 0x8641,
0x8201, 0x42C0, 0x4380, 0x8341, 0x4100, 0x81C1, 0x8081, 0x4040
};
#endif // CRCTABLE_H

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ndsfactory/fatstruct.h Normal file
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#ifndef FATSTRUCT_H
#define FATSTRUCT_H
#include <cstdint>
struct FatRange {
uint32_t startAddr;
uint32_t endAddr;
};
#endif // FATSTRUCT_H

166
ndsfactory/ndsfactory.cpp Normal file
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#include <string>
#include <iostream>
#include <fstream>
#include <cmath>
#include "ndsfactory.h"
#include "fatstruct.h"
#include "crctable.h"
NDSFactory::NDSFactory()
{
}
bool NDSFactory::loadRomHeader(const std::string& romPath, std::vector<char>& romHeader)
{
std::streampos headerSize = sizeof(NDSHeader);
std::ifstream romFile (romPath, std::ios::in|std::ios::binary|std::ios::ate);
if (romFile.is_open())
{
romHeader.resize(static_cast<unsigned long>(headerSize));
romFile.seekg (0, std::ios::beg);
romFile.read (romHeader.data(), headerSize);
romFile.close();
return true;
}
return false;
}
bool NDSFactory::dumpDataFromFile(const std::string& romPath, const std::string& savePath, uint32_t startAddr, uint32_t size)
{
std::ifstream romFile (romPath, std::ios::in|std::ios::binary|std::ios::ate);
std::ofstream savedFile (savePath, std::ios::out|std::ios::binary|std::ios::ate);
if (romFile.is_open() && savedFile.is_open())
{
std::vector<char> dumpBuffer(size);
romFile.seekg (startAddr, std::ios::beg);
romFile.read (dumpBuffer.data(), size);
romFile.close();
savedFile.write(dumpBuffer.data(), size);
savedFile.close();
return true;
}
return false;
}
bool NDSFactory::readBytesFromFile(std::vector<char>& byteBuffer, const std::string& romPath, uint32_t startAddr, uint32_t size)
{
std::ifstream romFile (romPath, std::ios::in|std::ios::binary|std::ios::ate);
if (romFile.is_open())
{
romFile.seekg (startAddr, std::ios::beg);
romFile.read (byteBuffer.data(), size);
romFile.close();
return true;
}
return false;
}
bool NDSFactory::writeSectionToFile(const std::string& sectionPath, const std::string& savePath, uint32_t startAddr, uint32_t size)
{
std::ifstream sectionFile (sectionPath, std::ios::in|std::ios::binary|std::ios::ate);
std::ofstream savedFile (savePath, std::ios::out|std::ios::binary|std::ios::app);
if (sectionFile.is_open() && savedFile.is_open())
{
std::vector<char> dumpBuffer(size);
sectionFile.seekg (0, std::ios::beg);
sectionFile.read (dumpBuffer.data(), size);
sectionFile.close();
savedFile.seekp(startAddr, std::ios::beg);
savedFile.write(dumpBuffer.data(), size);
savedFile.close();
return true;
}
return false;
}
bool NDSFactory::writeBytesToFile(std::vector<char>& byteBuffer, const std::string& savePath, uint32_t startAddr, uint32_t size)
{
std::ofstream savedFile (savePath, std::ios::out|std::ios::binary|std::ios::app);
if (savedFile.is_open())
{
savedFile.seekp(startAddr, std::ios::beg);
savedFile.write(byteBuffer.data(), size);
savedFile.close();
return true;
}
return false;
}
bool NDSFactory::writePaddingToFile(char paddingChar, const std::string& filePath, uint32_t startAddr, const uint32_t size)
{
std::vector<char> paddingBytes(size, paddingChar);
return writeBytesToFile(paddingBytes, filePath, startAddr, size);
}
int NDSFactory::getCardSizeInBytes(int cardType)
{
return static_cast<int>(pow(2, 17 + cardType));
}
bool NDSFactory::checkArm9FooterPresence(const std::string& sectionPath, uint32_t size)
{
std::ifstream sectionFile (sectionPath, std::ios::in|std::ios::binary|std::ios::ate);
if (sectionFile.is_open())
{
long sectionRealSize = sectionFile.tellg();
sectionFile.close();
if (sectionRealSize >= size + Arm9FooterSize)
{
return true;
}
}
return false;
}
bool NDSFactory::patchFat(const std::string& fatSectionPath, uint32_t shiftSize, const std::string& savePath)
{
std::vector<char> fatBytes;
std::ifstream sectionFile (fatSectionPath, std::ios::in|std::ios::binary|std::ios::ate);
if (!sectionFile.is_open())
return false;
long sectionSize = sectionFile.tellg();
fatBytes.resize(static_cast<unsigned long>(sectionSize));
sectionFile.seekg (0, std::ios::beg);
sectionFile.read (fatBytes.data(), sectionSize);
sectionFile.close();
FatRange* pfatrange = reinterpret_cast<FatRange*>(fatBytes.data());
for(size_t i = 0; i < fatBytes.size(); i += sizeof(FatRange), pfatrange++) {
pfatrange->startAddr += shiftSize;
pfatrange->endAddr += shiftSize;
}
return writeBytesToFile(fatBytes, savePath, 0, static_cast<uint32_t>(sectionSize));
}
uint16_t NDSFactory::calcHeaderCrc16(const std::vector<char>& romHeader)
{
uint8_t loc;
uint16_t crc = 0xFFFF;
size_t size = 0x15E;
size_t index = 0;
while (size--)
{
loc = static_cast<unsigned char>(romHeader[index] ^ crc);
index++;
crc >>= 8;
crc ^= lCRCTable[loc];
}
return crc;
}

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ndsfactory/ndsfactory.h Normal file
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#ifndef NDSFACTORY_H
#define NDSFACTORY_H
#include <string>
#include <vector>
#include <cstdint>
#include "ndsheader.h"
class NDSFactory
{
public:
NDSFactory();
bool loadRomHeader(const std::string& romPath, std::vector<char>& header);
bool dumpDataFromFile(const std::string& romPath, const std::string& savePath, uint32_t startAddr, uint32_t size);
bool readBytesFromFile(std::vector<char>& byteBuffer, const std::string& romPath, uint32_t startAddr, uint32_t size);
bool writeSectionToFile(const std::string& sectionPath, const std::string& savePath, uint32_t startAddr, uint32_t size);
bool writeBytesToFile(std::vector<char>& byteBuffer, const std::string& savePath, uint32_t startAddr, uint32_t size);
bool writePaddingToFile(char paddingChar, const std::string& savePath, uint32_t startAddr, uint32_t size);
int getCardSizeInBytes(int cardType);
bool checkArm9FooterPresence(const std::string& sectionPath, uint32_t size);
bool patchFat(const std::string& sectionPath, uint32_t shiftSize, const std::string& savePath);
uint16_t calcHeaderCrc16(const std::vector<char>& romHeader);
private:
};
#endif // NDSFACTORY_H

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ndsfactory/ndsheader.h Normal file
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#ifndef NDSHEADER_H
#define NDSHEADER_H
#include <cstdint>
#define IconTitleSize 0xA00
#define Arm9FooterSize 0xC
#pragma pack(push, 1)
struct NDSHeader
{
char GameTitle[0xC];
char GameCode[0x4];
unsigned char MakerCode[0x2];
unsigned char UnitCode;
unsigned char DeviceType;
unsigned char DeviceSize;
unsigned char Reserved1[0x9];
unsigned char RomVersion;
unsigned char Flags;
uint32_t Arm9RomAddr;
uint32_t Arm9EntryAddr;
uint32_t Arm9RamAddr;
uint32_t Arm9Size;
uint32_t Arm7RomAddr;
uint32_t Arm7EntryAddr;
uint32_t Arm7RamAddr;
uint32_t Arm7Size;
uint32_t FilenameTableAddr;
uint32_t FilenameSize;
uint32_t FATAddr;
uint32_t FATSize;
uint32_t Arm9OverlayAddr;
uint32_t Arm9OverlaySize;
uint32_t Arm7OverlayAddr;
uint32_t Arm7OverlaySize;
uint32_t NormalCommandsSettings;
uint32_t Key1CommandsSettings;
uint32_t IconTitleAddr;
uint16_t SecureAreaCRC16;
uint16_t SecureAreaLoadingTimeout;
uint32_t ARM9AutoLoadListRamAddr;
uint32_t ARM7AutoLoadListRamAddr;
uint64_t SecureAreaDisable;
uint32_t RomSize;
uint32_t HeaderSize;
unsigned char Reserved2[0x38];
unsigned char NintendoLogo[0x9C];
uint16_t NintendoLogoCRC;
uint16_t HeaderCRC16;
uint32_t DebugRomAddr;
uint32_t DebugSize;
uint32_t DebugRamAddr;
unsigned char Reserved3[0x4];
unsigned char Reserved4[0x90];
};
#pragma pack(pop)
#endif // NDSHEADER_H