// TAHファイルをstreamに書き込む.成功ならtrue,失敗ならfalseを返す.
public bool Write(Stream tostream)
{
try
{
int index = 0;
// ファイル先頭に移動する.
tostream.Seek(0, SeekOrigin.Begin);
using (BufferedStream stream = new BufferedStream(tostream))
using (BinaryWriter binarywriter = new BinaryWriter(stream))
{
// ヘッダー情報を構築する.
BuildHeader();
// ヘッダーを書き込む.
header.Write(binarywriter);
long entryposition = stream.Position;
// offset値は0のままでエントリを一度書き込む.
foreach (TAHContent content in contents)
{
content.Entry.Write(binarywriter);
}
// ディレクトリを構築する
BuildDirectory();
// ディレクトリを書き込む.
directory.Write(binarywriter);
// データを書き込む
foreach (TAHContent content in contents)
{
// 実際にデータを読み込む.
Byte[] data = Data(delegateFileList[index++]);
// ヘッダーを更新する.
content.Data = data;
content.Entry.Length = data.Length;
content.Entry.DataOffset = (uint)stream.Position;
UInt32 length = (UInt32)content.Entry.Length;
binarywriter.Write(length);
Byte[] cryptdata = TAHUtil.Encrypt(content.Data);
binarywriter.Write(cryptdata);
// 参照を解除する.
content.Data = null;
data = null;
}
// エントリを書き直す.
stream.Seek(entryposition, SeekOrigin.Begin);
foreach (TAHContent content in contents)
{
content.Entry.Write(binarywriter);
}
// バッファをフラッシュして完了.
binarywriter.Flush();
binarywriter.Close();
//stream.Flush();
}
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
return(false);
}
return(true);
}
public static void ReadExternalFileList()
{
external_files = new ext_file_list();
if (System.IO.File.Exists("names.txt"))
{
System.IO.StreamReader reader = new System.IO.StreamReader(System.IO.File.OpenRead("names.txt"));
List <string> known_files = new List <string>();
string line;
while ((line = reader.ReadLine()) != null)
{
known_files.Add(line);
}
//map a list of hash keys to the file...
external_files.files = known_files.ToArray();
if (external_files.files != null)
{
external_files.hashkeys = new UInt32[external_files.files.Length];
for (int i = 0; i < external_files.files.Length; i++)
{
external_files.hashkeys[i] = TAHUtil.CalcHash(external_files.files[i]);
//Console.WriteLine(external_files.hashkeys[i].ToString("X8") + "\t" + external_files.files[i]);
}
}
//sorting for faster look up...
Array.Sort(external_files.hashkeys, external_files.files);
}
}
public static byte[] ReadEntryData(BinaryReader br, TAHEntry e)
{
br.BaseStream.Seek(e.DataOffset, SeekOrigin.Begin);
byte[] output = new byte[br.ReadInt32()];
byte[] input = br.ReadBytes(e.Length - 4);
TAHUtil.Decrypt(input, output);
return(output);
}
public static byte[] Decrypt(byte[] input, byte[] output)
{
//debug = true;
try
{
#if DECRYPT_DEBUG
byte[] output2 = new byte[output.Length];
if (debug)
{
TAHUtil.DecryptOld(input.Clone() as byte[], output2);
}
#endif
DoDecrypt(input, output);
#if DECRYPT_DEBUG
if (debug)
{
for (int i = 0; i < output.Length; ++i)
{
System.Diagnostics.Debug.Assert(output2[i] == output[i]);
}
}
#endif
#if ENCRYPT_DEBUG
byte[] encrypted = DoEncrypt(output);
byte[] encrypted2 = new byte[output.Length];
uint length = (uint)encrypted2.Length;
//TAHdecrypt.Decrypter.encrypt(ref output, (uint)output.Length, ref encrypted2, ref length);
byte[] decrypted = new byte[output.Length];
DoDecrypt(encrypted, decrypted);
if (debug)
{
for (int i = 0; i < output.Length; ++i)
{
System.Diagnostics.Debug.Assert(decrypted[i] == output[i]);
}
}
#endif
return(output);
}
catch (Exception e)
{
DbgPrint(e.ToString());
throw;
}
}
// TAHにファイルを加える.
public void Add(string filename)
{
// オリジナルのファイル名を保存しておく.
delegateFileList.Add(filename);
// TAHに格納可能なファイル名に変換する.
string regularfile = filename.Replace('\\', '/');
TAHEntry tahentry = new TAHEntry();
tahentry.DataOffset = 0;
tahentry.FileName = regularfile;
tahentry.Length = 0;
if (Path.GetDirectoryName(regularfile) == "")
{
// dddddddd_xxxxxxxx.eee形式をハッシュ値に戻す
if (regularfile.Length >= 17)
{
string hashcode = regularfile.Substring(9, 8);
try
{
// 16進数からハッシュ値に.
tahentry.Hash = UInt32.Parse(hashcode, System.Globalization.NumberStyles.HexNumber);
// 暫定ファイル名は削除.
tahentry.FileName = null;
}
catch (Exception)
{
// 判んない時は適当につける.
tahentry.Hash = TAHUtil.CalcHash(regularfile);
}
}
else
{
// 判んない時は適当につける.
tahentry.Hash = TAHUtil.CalcHash(regularfile);
}
}
else
{
tahentry.Hash = TAHUtil.CalcHash(regularfile);
}
TAHContent content = new TAHContent(tahentry, null);
contents.Add(content);
}
public void Write(BinaryWriter bw)
{
MemoryStream ms = new MemoryStream();
BinaryWriter bw2 = new BinaryWriter(ms);
foreach (string i in Files)
{
if (i.EndsWith("/"))
{
TAHUtil.WriteString(bw2, i);
}
else
{
TAHUtil.WriteString(bw2, Path.GetFileName(i));
}
}
bw2.Flush();
byte[] encrypted = TAHUtil.Encrypt(ms.ToArray());
bw.Write((uint)ms.Length);
bw.Write(encrypted);
}
public GenericTAHStream(GenericTahInfo info, ArcsTahFilesEntry tsoInfo)
{
// zipファイルの中か?
if (info.zipid != -1)
{
ArcsZipArcEntry zip = TDCGExplorer.ArcsDB.GetZip(info.zipid);
string zippath = Path.Combine(TDCGExplorer.SystemDB.zips_path, zip.path);
switch (Path.GetExtension(zip.path).ToLower())
{
case ".zip":
archive = new ZipArchive();
break;
case ".lzh":
archive = new LzhArchive();
break;
case ".rar":
archive = new RarArchive();
break;
default:
archive = new DirectAccessArchive();
break;
}
TDCGExplorer.LastAccessFile = zippath;
archive.Open(zippath);
if (archive == null)
{
throw new Exception(TextResource.ArchiveIsNull);
}
//
foreach (IArchiveEntry entry in archive)
{
// ディレクトリのみの場合はスキップする.
if (entry.IsDirectory == true)
{
continue;
}
// マッチするファイルを見つけた.
if (entry.FileName == info.path)
{
ms = new MemoryStream((int)entry.Size);
archive.Extract(entry, ms);
ms.Seek(0, SeekOrigin.Begin);
tah = new TAHFile(ms);
tah.LoadEntries();
if (tsoInfo == null)
{
return;
}
int tahentry = 0;
foreach (TAHEntry ent in tah.EntrySet.Entries)
{
// 該当ファイルを見つけた.
if (tahentry == tsoInfo.tahentry)
{
byte[] data = TAHUtil.ReadEntryData(tah.Reader, ent);
//
Cursor.Current = Cursors.WaitCursor;
ims = new MemoryStream(data);
return;
}
tahentry++;
}
}
}
}
else
{
string source = Path.Combine(TDCGExplorer.SystemDB.arcs_path, info.path);
tah = new TAHFile(source);
tah.LoadEntries();
if (tsoInfo == null)
{
return;
}
int tahentry = 0;
foreach (TAHEntry ent in tah.EntrySet.Entries)
{
// 該当ファイルを見つけた.
if (tahentry == tsoInfo.tahentry)
{
byte[] data = TAHUtil.ReadEntryData(tah.Reader, ent);
//
ims = new MemoryStream(data);
return;
}
tahentry++;
}
}
throw new Exception("TAH内のファイルが見つかりません");
}
public TAHContent LoadContent(BinaryReader br, TAHEntry e)
{
return(new TAHContent(e, TAHUtil.ReadEntryData(br, e)));
}
public void Read(BinaryReader br, TAHFile file)
{
// ディレクトリデータの読み込み
Files = new List <string>(file.Header.NumEntries);
int output_length = br.ReadInt32();
int input_length = (int)(file.EntrySet[0].DataOffset - br.BaseStream.Position); //- 16 - 8 * file.Header.NumEntries;
byte[] input = br.ReadBytes(input_length);
byte[] output = new byte[output_length];
if (output.Length == 0)
{
return;
}
// add konoa:tahdecryptorのバグ回避.
if (input.Length == 0)
{
return;
}
TAHUtil.Decrypt(input, output);
//TAHdecrypt.Decrypter.decrypt(ref input, (uint)input.Length, ref output, (uint)output.Length);
MemoryStream ms = new MemoryStream(output);
BinaryReader br2 = new BinaryReader(ms);
try
{
string dir = "";
while (ms.Position < ms.Length)
{
string name = TAHUtil.ReadString(br2);
if (name.Length == 0)
{
}
else
if (name.EndsWith("/"))
{
dir = name;
//DbgPrint("Directory: " + dir);
}
else
{
name = dir + name;
uint hash = TAHUtil.CalcHash(name);
TAHEntry ent;
//DbgPrint(hash.ToString("X").PadLeft(8, '0'));
if (file.EntrySet.TryGetValue(hash, out ent))
{
ent.FileName = name;
//DbgPrint(": Found: " + file);
}
else
{
//DbgPrint(": Not Found: " + file);
System.Diagnostics.Debug.Assert(false);
}
//EntryMap[hash].FileName = FileName;
}
Files.Add(name);
}
}
catch (EndOfStreamException)
{
}
}
