internal static bool BuildHFS0(string inDir, string outFile, SHA256 sha)
{
Console.WriteLine("Building {0} from folder {1}...", outFile, inDir);
hfs0_header header = new hfs0_header();
header.Magic = 0x30534648; // HFS0
List <hfs0_file_entry> fileEntries = new List <hfs0_file_entry>();
List <string> stringTable = new List <string>();
char[] objPath = new char[256];
FileStream fs;
BinaryWriter bw;
// Opening output file
try
{
fs = new FileStream(outFile, FileMode.Create, FileAccess.Write);
bw = new BinaryWriter(fs);
}
catch (Exception ex)
{
Console.WriteLine("[ERR] Cannot create {0}.\n{1}", outFile, ex.Message);
return(false);
}
// Opening input directory
if (!Directory.Exists(inDir))
{
Console.WriteLine("[ERR] Input folder {0} does not exist.", inDir);
return(false);
}
List <string> inputFiles = new List <string>();
foreach (string file in Directory.GetFiles(inDir))
{
inputFiles.Add(Path.GetFileName(file));
}
// Handling root partitions for correct partition order
if (inputFiles.Count >= 3 && inputFiles.Count <= 4 && inputFiles.Contains("secure") && inputFiles.Contains("normal") && inputFiles.Contains("update"))
{
if (inputFiles.Contains("logo"))
{
Console.WriteLine("Treating {0} as CARD2 root hfs0", outFile);
inputFiles = new List <string>();
inputFiles.Add("update");
inputFiles.Add("normal");
inputFiles.Add("secure");
inputFiles.Add("logo");
}
else if (inputFiles.Count == 3)
{
Console.WriteLine("Treating {0} as CARD1 root hfs0", outFile);
inputFiles = new List <string>();
inputFiles.Add("update");
inputFiles.Add("normal");
inputFiles.Add("secure");
}
}
// Number of files in HFS0 archive
header.NumberOfFiles = Convert.ToUInt32(inputFiles.Count);
header.StringTableSize = 0;
UInt64 fileEntry_relativeOffset = 0;
// Building stringtable
foreach (string file in inputFiles)
{
var absPath = Path.Combine(inDir, file);
stringTable.Add(file);
FileStream inputFS = new FileStream(absPath, FileMode.Open, FileAccess.Read);
BinaryReader inputFSReader = new BinaryReader(inputFS);
hfs0_file_entry fileEntry = new hfs0_file_entry();
fileEntry.Offset = Convert.ToUInt64(fileEntry_relativeOffset);
fileEntry.Size = Convert.ToUInt64(inputFS.Length);
UInt64 paddedSize = Convert.ToUInt64(Math.Ceiling((double)fileEntry.Size / (double)0x200) * 0x200);
fileEntry_relativeOffset += paddedSize;
if (fileEntry.Size > 0x200)
{
fileEntry.HashedSize = 0x200;
}
else
{
fileEntry.HashedSize = Convert.ToUInt32(fileEntry.Size);
}
byte[] dataToHash = new byte[fileEntry.HashedSize];
inputFSReader.Read(dataToHash, 0, dataToHash.Length);
inputFSReader.Close();
inputFS.Close();
fileEntry.StringTableOffset = header.StringTableSize;
fileEntry.FileHash = sha.ComputeHash(dataToHash);
header.StringTableSize += Convert.ToUInt32(file.Length + 1);
fileEntries.Add(fileEntry);
}
// Calculate padding fo alignment
ulong bytesWrittenUntilNow = HFS0_HEADER_LENGTH + (HFS0_ENTRY_LENGTH * header.NumberOfFiles) + header.StringTableSize;
ulong bytesWrittenUntilNowPadded = Convert.ToUInt64(Math.Ceiling((double)bytesWrittenUntilNow / (double)0x200) * 0x200);
ulong bytesWrittenUntilNowDif = bytesWrittenUntilNowPadded - bytesWrittenUntilNow;
header.StringTableSize += Convert.ToUInt32(bytesWrittenUntilNowDif);
bw.Write(Utils.StructureToByteArray(header));
foreach (hfs0_file_entry fileEntry in fileEntries)
{
bw.Write(Utils.StructureToByteArray(fileEntry));
}
foreach (string str in stringTable)
{
bw.Write(str.ToCharArray());
bw.Write((byte)0x00);
}
// Fill padding
for (ulong i = 0; i < bytesWrittenUntilNowDif; i++)
{
bw.Write((byte)0x0);
}
foreach (string file in inputFiles)
{
var absPath = Path.Combine(inDir, file);
FileStream stream = new FileStream(absPath, FileMode.Open, FileAccess.Read);
byte[] buffer = new Byte[1024 * 5];
int count = 0;
while ((count = stream.Read(buffer, 0, buffer.Length)) > 0)
{
bw.Write(buffer, 0, count);
}
ulong paddedLength = Convert.ToUInt64(Math.Ceiling((double)stream.Length / (double)0x200) * 0x200);
ulong difference = paddedLength - Convert.ToUInt64(stream.Length);
for (ulong i = 0; i < difference; i++)
{
bw.Write((byte)0x0);
}
stream.Close();
}
bw.Close();
fs.Close();
Console.WriteLine("Operation successful");
return(true);
}