/// <summary>
/// Logs all transaction scripts formats, so that this way we can identify
/// the different ways data might be encoded on the blockchain.
/// </summary>
private static void LogScriptPatterns(string[] files, string output_pattern_file = @"e:\patterns.txt")
{
var sb = new StringBuilder();
var patterns = new Dictionary <string, ScriptPattern>();
string current_file = null;
try {
int block_height = 0;
foreach (var file in files)
{
current_file = file;
foreach (var block in Block.ParseAll(file))
{
block.Height = block_height++;
Console.WriteLine(string.Format("processing block #{0}", block.Height));
foreach (var transaction in block.Transactions)
{
foreach (var txout in transaction.Outs)
{
var text_script = txout.Script.ToString();
var pattern = Helper.DetectScriptPattern(text_script);
ScriptPattern temp;
if (!patterns.TryGetValue(pattern, out temp))
{
temp = new ScriptPattern()
{
Pattern = pattern,
Example = text_script,
TxId = transaction.TransactionHash.ToString(),
};
patterns.Add(pattern, temp);
}
temp.Count++;
}
}
}
File.WriteAllText(output_pattern_file, string.Join(Environment.NewLine, patterns.Select(o => o.Value)));
}
} catch (Exception ex) {
throw new FormatException($"An error occured reading the file {current_file}. File might be corrupted or contain extra data. This also occurs when reading block files from old version of bitcoin core.", ex);
}
}
//////////////////////////////////////////////////////////////////////////
private bool IsWellKnownPattern(StringItem Item)
{
string ScriptLine = GetFileLine(Item.Filename, Item.Line);
ScriptLine = ScriptLine.ToUpper();
ScriptLine = ScriptLine.Replace(" ", "");
ScriptLine = ScriptLine.Replace("\t", "");
foreach (string ScriptPattern in ScriptPatterns)
{
string Pattern = ScriptPattern.Replace("%string%", Item.OriginalString);
Pattern = Pattern.ToUpper();
if (ScriptLine.IndexOf(Pattern) >= 0)
{
return(true);
}
}
return(false);
}
