public TorrentReader(string archivo)
{
FileStream f = new FileStream(archivo, FileMode.Open, FileAccess.Read);
BEncodeDecoder parser = new BEncodeDecoder();
decodedTorrent = parser.parse(f);
comment = ((BEncodeString)decodedTorrent.getValue(new BEncodeString("comment"))).ToString();
announceURL = ((BEncodeString)decodedTorrent.getValue(new BEncodeString("announce"))).ToString();
announceList = (BEncodeList)decodedTorrent.getValue(new BEncodeString("announce-list"));
try
{
encoding = ((BEncodeString)decodedTorrent.getValue(new BEncodeString("encoding"))).ToString();
}
catch (Exception e)
{
}
string test = ((BEncodeDictionary)decodedTorrent.getValue(new BEncodeString("info"))).ToBencodeDictionary();
char[] tester = test.ToCharArray();
byte[] total = new byte[tester.Length];
int counter = 0;
foreach(char chars in tester)
{
total[counter] = (byte)chars;
counter += 1;
}
info_hash_byte = SHA1CryptoServiceProvider.Create().ComputeHash(total);
info_hash = BitConverter.ToString(info_hash_byte).Replace("-", "");
content_length = ((BEncodeInteger)((BEncodeDictionary)decodedTorrent.getValue(new BEncodeString("info"))).getValue(new BEncodeString("length"))).getValue();
filename = ((BEncodeString)((BEncodeDictionary)decodedTorrent.getValue(new BEncodeString("info"))).getValue(new BEncodeString("name"))).ToString();
created_by = ((BEncodeString)decodedTorrent.getValue(new BEncodeString("created by"))).ToString();
}
private BEncodeDictionary decodeDictionary()
{
BEncodeDictionary value = new BEncodeDictionary();
char start = (char)reader.ReadByte();
bool hasFinal = false;
if (start == 'd')
{
while (true)
{
char actual = (char)reader.PeekChar();
if (actual == 'e')
{
reader.ReadByte();
hasFinal = true;
break;
}
else if (actual == 'd')
{
if ((innerDictionaries == 0) && (keys.Count % 2 == 1))
{
innerDictionaries += 1;
BEncodeDictionary dic = decodeDictionary();
value.Add(keys.Pop(), dic);
innerDictionaries -= 1;
}
else if ((innerDictionaries == 0) && (keys.Count % 2 == 0))
{
throw new BEncodeException("key must be a string, not dictionary");
}
else if ((innerDictionaries > 0) && (innerDictionaries % 2 == 1) && (keys.Count % 2 == 0))
{
innerDictionaries += 1;
BEncodeDictionary dic = decodeDictionary();
value.Add(keys.Pop(), dic);
innerDictionaries -= 1;
}
else if ((innerDictionaries > 0) && (innerDictionaries % 2 == 1) && (keys.Count % 2 == 1))
{
throw new BEncodeException("key must be a string, not dictionary");
}
else if ((innerDictionaries > 0) && (innerDictionaries % 2 == 0) && (keys.Count % 2 == 1))
{
innerDictionaries += 1;
BEncodeDictionary dic = decodeDictionary();
value.Add(keys.Pop(), dic);
innerDictionaries -= 1;
}
else if ((innerDictionaries > 0) && (innerDictionaries % 2 == 0) && (keys.Count % 2 == 0))
{
throw new BEncodeException("key must be a string, not dictionary");
}
}
else if (actual == 'l')
{
if ((innerDictionaries == 0) && (keys.Count % 2 == 1))
{
value.Add(keys.Pop(), decodeList());
}
else if ((innerDictionaries == 0) && (keys.Count % 2 == 0))
{
throw new BEncodeException("key must be a string, not dictionary");
}
else if ((innerDictionaries > 0) && (innerDictionaries % 2 == 1) && (keys.Count % 2 == 0))
{
value.Add(keys.Pop(), decodeList());
}
else if ((innerDictionaries > 0) && (innerDictionaries % 2 == 1) && (keys.Count % 2 == 1))
{
throw new BEncodeException("key must be a string, not dictionary");
}
else if ((innerDictionaries > 0) && (innerDictionaries % 2 == 0) && (keys.Count % 2 == 1))
{
value.Add(keys.Pop(), decodeList());
}
else if ((innerDictionaries > 0) && (innerDictionaries % 2 == 0) && (keys.Count % 2 == 0))
{
throw new BEncodeException("key must be a string, not dictionary");
}
}
else if (actual == 'i')
{
if ((innerDictionaries == 0) && (keys.Count % 2 == 1))
{
value.Add(keys.Pop(), decodeInteger());
}
else if ((innerDictionaries == 0) && (keys.Count % 2 == 0))
{
throw new BEncodeException("key must be a string, not dictionary");
}
else if ((innerDictionaries > 0) && (innerDictionaries % 2 == 1) && (keys.Count % 2 == 0))
{
value.Add(keys.Pop(), decodeInteger());
}
else if ((innerDictionaries > 0) && (innerDictionaries % 2 == 1) && (keys.Count % 2 == 1))
{
throw new BEncodeException("key must be a string, not dictionary");
}
else if ((innerDictionaries > 0) && (innerDictionaries % 2 == 0) && (keys.Count % 2 == 1))
{
value.Add(keys.Pop(), decodeInteger());
}
else if ((innerDictionaries > 0) && (innerDictionaries % 2 == 0) && (keys.Count % 2 == 0))
{
throw new BEncodeException("key must be a string, not dictionary");
}
}
else if (char.IsDigit(actual))
{
if ((innerDictionaries == 0) && (keys.Count % 2 == 1))
{
value.Add(keys.Pop(), decodeString());
}
else if ((innerDictionaries == 0) && (keys.Count % 2 == 0))
{
keys.Push(decodeString());
}
else if ((innerDictionaries > 0) && (innerDictionaries % 2 == 1) && (keys.Count % 2 == 0))
{
value.Add(keys.Pop(), decodeString());
}
else if ((innerDictionaries > 0) && (innerDictionaries % 2 == 1) && (keys.Count % 2 == 1))
{
keys.Push(decodeString());
}
else if ((innerDictionaries > 0) && (innerDictionaries % 2 == 0) && (keys.Count % 2 == 1))
{
value.Add(keys.Pop(), decodeString());
}
else if ((innerDictionaries > 0) && (innerDictionaries % 2 == 0) && (keys.Count % 2 == 0))
{
keys.Push(decodeString());
}
else
{
throw new BEncodeException("cant recognize type in dictionary");
}
}
}
}
else
{
throw new BEncodeException("dictionary must start with d");
}
if (!hasFinal)
{
throw new BEncodeException("dictionary must finish with e");
}
return value;
}
public void Add(BEncodeString key, BEncodeDictionary value)
{
data.Add(key, value);
}
public void Add(BEncodeDictionary value)
{
data.Add(value);
}
