public static bool InitializeFromDpApi(this NetworkCredential credential, string key)
{
if (credential == null)
{
throw new ArgumentNullException("credential");
}
try
{
var doc = new XmlDocument();
doc.LoadXml(key);
var node = provider.Decrypt(doc.DocumentElement) as XmlElement;
if (node.HasAttribute("UserName"))
{
credential.UserName = node.GetAttribute("UserName");
}
if (node.HasAttribute("Password"))
{
credential.Password = node.GetAttribute("Password");
}
if (node.HasAttribute("Domain"))
{
credential.Domain = node.GetAttribute("Domain");
}
return(true);
}
catch (Exception)
{
return(false);
}
}
public object Create(object parent, object configContext, XmlNode section)
{
object result = parent;
XmlNode fileAttribute = section.Attributes.RemoveNamedItem("file");
if (fileAttribute == null && fileAttribute.Value.Length == 0)
{
return(new NameValueSectionHandler().Create(result, null, section));
}
IConfigErrorInfo configXmlNode = fileAttribute as IConfigErrorInfo;
if (configXmlNode == null)
{
return(null);
}
string directory = Path.GetDirectoryName(configXmlNode.Filename);
string absoluteFilePath = Path.GetFullPath(directory + fileAttribute.Value);
if (!File.Exists(absoluteFilePath))
{
throw new ConfigurationErrorsException(string.Format("external config file: {0} does not exists", absoluteFilePath));
}
var configXmlDocument = new ConfigXmlDocument();
try
{
configXmlDocument.Load(absoluteFilePath);
}
catch (XmlException e)
{
throw new ConfigurationErrorsException(e.Message, e, absoluteFilePath, e.LineNumber);
}
if (section.Name != configXmlDocument.DocumentElement.Name)
{
throw new ConfigurationErrorsException(string.Format("Section name '{0}' in app.config does not match section name '{1}' in file '{2}'", section.Name, configXmlDocument.DocumentElement.Name, absoluteFilePath));
}
var nodeToDecrypt = configXmlDocument.DocumentElement["EncryptedData"];
if (nodeToDecrypt == null)
{
throw new ConfigurationErrorsException(string.Format("External encrypted file {0} does not contain EncryptedData element", absoluteFilePath));
}
var protectionProvider = new DpapiProtectedConfigurationProvider();
var decryptedConfigSection = protectionProvider.Decrypt(nodeToDecrypt);
result = new NameValueSectionHandler().Create(result, null, decryptedConfigSection);
return(result);
}
