private Seven45Package(IFile f)
{
FileName = f.Name;
var stream = f.GetStream();
headerStream = new PowerChordCryptStream(stream);
root = new Common.DefaultDirectory(null, "/");
ParseHeader(f);
}
private Seven45Package(IFile f)
{
FileName = f.Name;
var stream = f.GetStream();
headerStream = new PowerChordCryptStream(stream);
if (headerStream.ReadInt32LE() != 0x745)
{
headerStream = new PowerChordCryptStream(stream, h_iv: header_iv_ps4);
}
root = new Common.DefaultDirectory(null, "/");
ParseHeader(f);
}
private void ParseHeader(IFile f)
{
headerStream.Position = 0;
var numDataFiles = 0;
var header = Header.Read(headerStream);
var fileEntries = new FileEntry[header.num_files];
for (var i = 0; i < fileEntries.Length; i++)
{
fileEntries[i] = FileEntry.Read(headerStream);
}
var dirEntries = new DirEntry[header.num_dirs];
for (var i = 0; i < dirEntries.Length; i++)
{
dirEntries[i] = DirEntry.Read(headerStream);
}
var stringTable = new List <string>(); // # of strings doesn't always match file count
var stringTableEnd = header.string_table_offset + header.string_table_size;
while (headerStream.Position < stringTableEnd)
{
stringTable.Add(headerStream.ReadASCIINullTerminated());
}
var fileOffsets = new OffsetEntry[header.num_offsets];
for (var i = 0; i < fileOffsets.Length; i++)
{
fileOffsets[i] = OffsetEntry.Read(headerStream);
if (fileOffsets[i].pk_num > numDataFiles)
{
numDataFiles = fileOffsets[i].pk_num;
}
}
var dirs_flat = new Common.DefaultDirectory[header.num_dirs];
dirs_flat[0] = root;
for (var i = 1; i < dirs_flat.Length; i++)
{
var parent = dirs_flat[dirEntries[i].parent];
parent.AddDir(dirs_flat[i] = new Common.DefaultDirectory(parent, stringTable[(int)dirEntries[i].string_num]));
}
contentFiles = new Stream[numDataFiles + 1];
var baseName = f.Name.Replace(".hdr.e.2", "");
for (var i = 0; i <= numDataFiles; i++)
{
contentFiles[i] = f.Parent.GetFile($"{baseName}.pk{i}").GetStream();
}
for (var i = 0; i < fileEntries.Length; i++)
{
var entry = fileEntries[i];
var name = entry.string_num < stringTable.Count ? stringTable[(int)entry.string_num] : "ERROR_FILENAME";
bool encrypted = false;
if (name.EndsWith(".e.2"))
{
encrypted = true;
name = name.Remove(name.Length - 4);
}
dirs_flat[entry.dir_num].AddFile(new Common.OffsetFile(
name,
dirs_flat[entry.dir_num],
contentFiles[fileOffsets[entry.offset_num].pk_num],
fileOffsets[entry.offset_num].pk_offset,
entry.size,
wrapStream: encrypted ? (s => new PowerChordCryptStream(s)) : (Func <Stream, Stream>)null));
}
}
private void ParseHeader(IFile f)
{
headerStream.Position = 0;
var numDataFiles = 0;
var header = Header.Read(headerStream);
var fileEntries = new FileEntry[header.num_files];
for (var i = 0; i < fileEntries.Length; i++)
{
fileEntries[i] = FileEntry.Read(headerStream);
}
var dirEntries = new DirEntry[header.num_dirs];
for (var i = 0; i < dirEntries.Length; i++)
{
dirEntries[i] = DirEntry.Read(headerStream);
}
var stringTable = new string[header.num_files];
var stringTableEnd = header.string_table_offset + header.string_table_size;
var x = 0;
while (headerStream.Position < stringTableEnd)
{
stringTable[x++] = headerStream.ReadASCIINullTerminated();
}
var fileOffsets = new OffsetEntry[header.num_offsets];
for (var i = 0; i < fileOffsets.Length; i++)
{
fileOffsets[i] = OffsetEntry.Read(headerStream);
if (fileOffsets[i].pk_num > numDataFiles)
{
numDataFiles = fileOffsets[i].pk_num;
}
}
var dirs_flat = new Common.DefaultDirectory[header.num_dirs];
dirs_flat[0] = root;
for (var i = 1; i < dirs_flat.Length; i++)
{
var parent = dirs_flat[dirEntries[i].parent];
parent.AddDir(dirs_flat[i] = new Common.DefaultDirectory(parent, stringTable[dirEntries[i].string_num]));
}
contentFiles = new Stream[numDataFiles + 1];
var baseName = f.Name.Replace(".hdr.e.2", "");
for (var i = 0; i <= numDataFiles; i++)
{
contentFiles[i] = f.Parent.GetFile($"{baseName}.pk{i}").GetStream();
}
for (var i = 0; i < fileEntries.Length; i++)
{
var entry = fileEntries[i];
var name = entry.string_num < stringTable.Length ? stringTable[entry.string_num] : "ERROR_FILENAME";
dirs_flat[entry.dir_num].AddFile(new Common.OffsetFile(
name,
dirs_flat[entry.dir_num],
contentFiles[fileOffsets[entry.offset_num].pk_num],
fileOffsets[entry.offset_num].pk_offset,
entry.size));
}
}
