private static string GetDecipheredSignature(string htmlPlayerVersion, string signature)
{
if (((string)signature).Length == 81)
{
return(signature);
}
return(Decipherer.DecipherWithVersion(signature, htmlPlayerVersion));
}
private static string GetDecipheredSignature(string htmlPlayerVersion, string signature)
{
if (signature.Length == CorrectSignatureLength)
{
return(signature);
}
return(Decipherer.DecipherWithVersion(signature, htmlPlayerVersion));
}
private static async Task <string> GetDecipheredSignatureAsync(string htmlPlayerVersion, string signature)
{
if (signature.Length == CorrectSignatureLength)
{
return(signature);
}
return(await Decipherer.DecipherWithVersionAsync(signature, htmlPlayerVersion));
}
private static string ApplyOperation(string cipher, string op)
{
switch (op[0])
{
case 'r':
return(new string((char[])Enumerable.ToArray <char>(Enumerable.Reverse <char>(cipher.ToCharArray()))));
case 's':
int opIndex1 = Decipherer.GetOpIndex(op);
return(cipher.Substring(opIndex1));
case 'w':
int opIndex2 = Decipherer.GetOpIndex(op);
return(Decipherer.SwapFirstChar(cipher, opIndex2));
default:
throw new NotImplementedException("Couldn't find cipher operation.");
}
}
private static string GetDecipheredSignature(string htmlPlayerVersion, string signature)
{
return(Decipherer.DecipherWithVersion(signature, htmlPlayerVersion));
}
public static string DecipherWithVersion(string cipher, string cipherVersion)
{
string input = HttpHelper.DownloadString(string.Format("http://s.ytimg.com/yts/jsbin/player-{0}.js", cipherVersion));
string pattern1 = "\\.sig\\s*\\|\\|([a-zA-Z0-9\\$]+)\\(";
string str1 = Regex.Match(input, pattern1).Groups[1].Value;
if (str1.Contains("$"))
{
str1 = "\\" + str1;
}
string pattern2 = str1 + "=function\\(\\w+\\)\\{.*?\\},";
string[] strArray = Regex.Match(input, pattern2, RegexOptions.Singleline).Value.Split(';');
string str2 = "";
string str3 = "";
string str4 = "";
string str5 = "";
IEnumerator <string> enumerator1 = ((IEnumerable <string>)Enumerable.Take <string>(Enumerable.Skip <string>(strArray, 1), strArray.Length - 2)).GetEnumerator();
try
{
while (((IEnumerator)enumerator1).MoveNext())
{
string current = enumerator1.Current;
if (!string.IsNullOrEmpty(str2) && !string.IsNullOrEmpty(str3))
{
if (!string.IsNullOrEmpty(str4))
{
break;
}
}
string functionFromLine = Decipherer.GetFunctionFromLine(current);
string pattern3 = string.Format("{0}:\\bfunction\\b\\(\\w+\\)", functionFromLine);
string pattern4 = string.Format("{0}:\\bfunction\\b\\([a],b\\).(\\breturn\\b)?.?\\w+\\.", functionFromLine);
string pattern5 = string.Format("{0}:\\bfunction\\b\\(\\w+\\,\\w\\).\\bvar\\b.\\bc=a\\b", functionFromLine);
if (Regex.Match(input, pattern3).Success)
{
str2 = functionFromLine;
}
if (Regex.Match(input, pattern4).Success)
{
str3 = functionFromLine;
}
if (Regex.Match(input, pattern5).Success)
{
str4 = functionFromLine;
}
}
}
finally
{
if (enumerator1 != null)
{
((IDisposable)enumerator1).Dispose();
}
}
IEnumerator <string> enumerator2 = ((IEnumerable <string>)Enumerable.Take <string>(Enumerable.Skip <string>(strArray, 1), strArray.Length - 2)).GetEnumerator();
try
{
while (((IEnumerator)enumerator2).MoveNext())
{
string current = enumerator2.Current;
string functionFromLine = Decipherer.GetFunctionFromLine(current);
string pattern3 = "\\(\\w+,(?<index>\\d+)\\)";
Match match1;
if ((match1 = Regex.Match(current, pattern3)).Success && functionFromLine == str4)
{
str5 = str5 + "w" + match1.Groups["index"].Value + " ";
}
string pattern4 = "\\(\\w+,(?<index>\\d+)\\)";
Match match2;
if ((match2 = Regex.Match(current, pattern4)).Success && functionFromLine == str3)
{
str5 = str5 + "s" + match2.Groups["index"].Value + " ";
}
if (functionFromLine == str2)
{
str5 += "r ";
}
}
}
finally
{
if (enumerator2 != null)
{
((IDisposable)enumerator2).Dispose();
}
}
string operations = str5.Trim();
return(Decipherer.DecipherWithOperations(cipher, operations));
}
