IContentSource CrawlObject(IContentSource content)
{
var match = Regex.Match(content.ToString(), Pattern, RegexOptions.Singleline | RegexOptions.IgnoreCase);
if (match == null || match.Groups.Count <= MatchGroup)
{
return(GetDefault(string.Format("Could not match pattern {0}", Pattern)));
}
var plainContent = new PlainContent();
plainContent.ContentList.Add(match.Groups[MatchGroup].Value);
return(plainContent);
}
protected IContentSource GetDefault(string errMessage = null)
{
if (DefaultValue != null)
{
var content = new PlainContent();
content.ContentList.Add(DefaultValue);
return(content);
}
if (ThrowIfNotFound)
{
throw new ArgumentException(errMessage);
}
return(null);
}
public static string Encrypt(string path, string password, bool replaceFilename = false,
Action<double, string> statusCallback = null)
{
if (!File.Exists(path))
throw new FileNotFoundException();
SetStatusEncryption(statusCallback, Status.ReadFile);
var bytes = File.ReadAllBytes(path);
var iv = CryptoProvider.CreateIV();
var plainContent = new PlainContent
{
Data = bytes,
Filename = Path.GetFileName(path)
};
SetStatusEncryption(statusCallback, Status.EncryptData);
var encryptedBytes = CryptoProvider.EncryptData(plainContent.GetBytes(), iv, password);
SetStatusEncryption(statusCallback, Status.CreateHmac);
var hmac = CryptoProvider.CreateHmac(iv, encryptedBytes, password);
var newPath = CreateEnryptedFilename(path, replaceFilename);
var container = new ContainerV1(iv, encryptedBytes, hmac);
SetStatusEncryption(statusCallback, Status.WriteAllBytes);
File.WriteAllBytes(newPath, container.GetBytes());
SetStatusEncryption(statusCallback, Status.Done);
return newPath;
}
public static PlainContent FromBytes(byte[] decryptedBytes)
{
var filenameLength = BitConverter.ToInt32(decryptedBytes.Take(4).ToArray(), 0);
var result = new PlainContent
{
Filename = Encoding.UTF8.GetString(decryptedBytes.Skip(4).Take(filenameLength).ToArray()),
Data = decryptedBytes.Skip(4 + filenameLength).ToArray()
};
return result;
}
