public byte[] SaveToArray()
{
byte[] temp = new byte[Leo.LBAToByte(DiskType, Leo.RamStartLBA[DiskType], 3)];
Util.WriteStringN(MFS.RAM_ID, temp, 0, MFS.RAM_ID.Length);
temp[0x0E] = (byte)(0 | (Attributes.isVolumeWriteProtected ? 0x20 : 0) | (Attributes.isVolumeReadProtected ? 0x40 : 0) | (Attributes.isWriteProtected ? 0x80 : 0));
temp[0x0F] = (byte)DiskType;
Util.WriteStringN(Name, temp, 0x10, 0x14);
Util.WriteBEU32(Date.Save(), temp, 0x24);
Util.WriteBEU16(Renewal, temp, 0x28);
temp[0x2A] = Country;
//Save FAT Entries
for (int i = 0; i < FAT.Length; i++)
{
Util.WriteBEU16(FAT[i], temp, 0x3C + (i * 2));
}
//Save File Entries 0x16B0
for (int i = 0; i < Entries.Count; i++)
{
byte[] tempentry;
if (Entries[i].GetType() == typeof(MFSDirectory))
{
tempentry = ((MFSDirectory)Entries[i]).Save();
}
else
{
tempentry = ((MFSFile)Entries[i]).Save();
}
Array.Copy(tempentry, 0, temp, 0x16B0 + (0x30 * i), 0x30);
}
//Checksum
uint crc = 0;
for (int i = 0; i < (temp.Length / 4); i++)
{
crc ^= Util.ReadBEU32(temp, i * 4);
}
Util.WriteBEU32(crc, temp, 0x2C);
return(temp);
}
public static bool WriteFile(MFSDisk mfsDisk, byte[] filedata, MFSFile file)
{
if (CheckIfFileAlreadyExists(mfsDisk, file.Name, file.Ext, file.ParentDirectory))
{
return(false);
}
if (GetFreeSpaceSize(mfsDisk) < filedata.Length)
{
return(false);
}
int FATentry = -1;
int lastFATentry = -1;
int offset = 0;
for (int i = 6; i < Leo.SIZE_LBA - Leo.RamStartLBA[mfsDisk.RAMVolume.DiskType]; i++)
{
if (mfsDisk.RAMVolume.FAT[i] == (ushort)MFS.FAT.Unused)
{
if (FATentry == -1)
{
FATentry = i;
file.FATEntry = (ushort)i;
}
//Write File Data
Array.Copy(filedata, offset, mfsDisk.Data, mfsDisk.OffsetToMFSRAM + Leo.LBAToByte(mfsDisk.RAMVolume.DiskType, Leo.RamStartLBA[mfsDisk.RAMVolume.DiskType], i), Math.Min(Leo.LBAToByte(mfsDisk.RAMVolume.DiskType, Leo.RamStartLBA[mfsDisk.RAMVolume.DiskType] + i, 1), filedata.Length - offset));
offset += Math.Min(Leo.LBAToByte(mfsDisk.RAMVolume.DiskType, Leo.RamStartLBA[mfsDisk.RAMVolume.DiskType] + i, 1), filedata.Length - offset);
if (lastFATentry != -1)
{
mfsDisk.RAMVolume.FAT[lastFATentry] = (ushort)i;
}
if (offset == filedata.Length)
{
mfsDisk.RAMVolume.FAT[i] = (ushort)MFS.FAT.LastFileBlock;
mfsDisk.RAMVolume.Entries.Add(file);
return(true);
}
lastFATentry = i;
}
}
return(false);
}
public static int GetCapacitySize(MFSDisk mfsDisk)
{
int totalsize = 0;
for (int i = 6; i < Leo.SIZE_LBA - Leo.RamStartLBA[mfsDisk.RAMVolume.DiskType]; i++)
{
switch (mfsDisk.RAMVolume.FAT[i])
{
case (ushort)MFS.FAT.Prohibited:
case (ushort)MFS.FAT.DontManage:
break;
default:
totalsize += Leo.LBAToByte(mfsDisk.RAMVolume.DiskType, Leo.RamStartLBA[mfsDisk.RAMVolume.DiskType] + i, 1);
break;
}
}
return(totalsize);
}
public static byte[] ReadFile(MFSDisk mfsDisk, MFSFile file)
{
byte[] filedata = new byte[file.Size];
//Add FAT Entries and Copy to data to blocks
ushort nextblock = file.FATEntry;
uint offset = 0;
uint size = file.Size;
do
{
int blocksrc = Leo.LBAToByte(mfsDisk.RAMVolume.DiskType, Leo.RamStartLBA[mfsDisk.RAMVolume.DiskType], nextblock);
int blocksize = Leo.LBAToByte(mfsDisk.RAMVolume.DiskType, Leo.RamStartLBA[mfsDisk.RAMVolume.DiskType] + nextblock, 1);
Array.Copy(mfsDisk.Data, mfsDisk.OffsetToMFSRAM + blocksrc, filedata, offset, Math.Min(blocksize, size));
offset += (uint)Math.Min(blocksize, size);
size -= (uint)Math.Min(blocksize, size);
nextblock = mfsDisk.RAMVolume.FAT[nextblock];
}while (nextblock != (ushort)MFS.FAT.LastFileBlock);
return(filedata);
}
void Load(string filepath)
{
//Assume RAM format for now
Format = MFS.DiskFormat.Invalid;
if (!File.Exists(filepath))
{
return;
}
FileStream file = new FileStream(filepath, FileMode.Open);
if (file.Length >= Leo.RamSize[5])
{
//Check Header
file.Seek(0, SeekOrigin.Begin);
byte[] test = new byte[MFS.RAM_ID.Length];
file.Read(test, 0, test.Length);
if (Encoding.ASCII.GetString(test).Equals(MFS.RAM_ID))
{
//It's a RAM file
file.Seek(15, SeekOrigin.Begin);
int DiskType = file.ReadByte();
if (DiskType >= 0 && DiskType < 6 && Leo.RamSize[DiskType] == file.Length)
{
file.Seek(0, SeekOrigin.Begin);
OffsetToMFSRAM = 0;
Data = new byte[file.Length];
file.Read(Data, 0, Data.Length);
RAMVolume = new MFSRAMVolume(Data, OffsetToMFSRAM);
Format = MFS.DiskFormat.RAM;
}
}
else
{
//SHA256 check if N64 Cartridge Port bootloader
byte[] headerTest = new byte[0xFC0];
file.Seek(0x40, SeekOrigin.Begin);
file.Read(headerTest, 0, headerTest.Length);
SHA256 hashHeader = SHA256.Create();
hashHeader.ComputeHash(headerTest);
string hashHeaderStr = "";
foreach (byte b in hashHeader.Hash)
{
hashHeaderStr += b.ToString("x2");
}
Console.WriteLine(hashHeaderStr);
int offsetStart = 0;
//SHA256 = 53c0088fb777870d0af32f0251e964030e2e8b72e830c26042fd191169508c05
if (hashHeaderStr == "53c0088fb777870d0af32f0251e964030e2e8b72e830c26042fd191169508c05")
{
offsetStart = 0x738C0 - 0x10E8; //Start of User LBA 0 (24 w/ System Area)
}
//Try every Disk Type
for (int i = 0; i < 6; i++)
{
int offset = Leo.LBAToByte(i, 0, Leo.RamStartLBA[i]) - offsetStart;
file.Seek(offset, SeekOrigin.Begin);
file.Read(test, 0, test.Length);
if (Encoding.ASCII.GetString(test).Equals(MFS.RAM_ID))
{
OffsetToMFSRAM = offset;
Data = new byte[file.Length];
file.Seek(0, SeekOrigin.Begin);
file.Read(Data, 0, Data.Length);
RAMVolume = new MFSRAMVolume(Data, OffsetToMFSRAM);
if (offsetStart == 0)
{
Format = MFS.DiskFormat.SDK;
}
else
{
Format = MFS.DiskFormat.N64;
}
break;
}
}
}
}
file.Close();
}
public static int GetFreeSpaceSize(MFSDisk mfsDisk)
{
int unused = Leo.RamSize[mfsDisk.RAMVolume.DiskType] - GetTotalUsedSize(mfsDisk) - Leo.LBAToByte(mfsDisk.RAMVolume.DiskType, Leo.RamStartLBA[mfsDisk.RAMVolume.DiskType], 6);
return(unused);
}