public object Create (object parent, object context, XmlNode section)
{
if (section.HasChildNodes)
ThrowException ("Child nodes not allowed here", section.FirstChild);
MachineKeyConfig config = new MachineKeyConfig (parent);
try {
config.SetValidationKey (AttValue ("validationKey", section));
} catch (ArgumentException e) {
ThrowException (e.Message, section);
}
try {
config.SetDecryptionKey (AttValue ("decryptionKey", section));
} catch (ArgumentException e) {
ThrowException (e.Message, section);
}
string validation = AttValue ("validation", section);
MachineKeyValidation valid = 0;
if (validation == "SHA1")
valid = MachineKeyValidation.SHA1;
else if (validation == "MD5")
valid = MachineKeyValidation.MD5;
else if (validation == "TripleDES")
valid = MachineKeyValidation.TripleDES;
else
ThrowException ("Invalid 'validation' value", section);
config.ValidationType = valid;
if (section.Attributes != null && section.Attributes.Count != 0)
ThrowException ("Unrecognized attribute", section);
MachineKeyConfig.MachineKey = config;
return config;
}
// CTor
internal MachineKeyConfig(object parentObject, object contextObject, XmlNode node)
{
MachineKeyConfig parent = (MachineKeyConfig)parentObject;
HttpConfigurationContext configContext = contextObject as HttpConfigurationContext;
if (HandlerBase.IsPathAtAppLevel(configContext.VirtualPath) == PathLevel.BelowApp)
{
throw new ConfigurationException(
HttpRuntime.FormatResourceString(SR.No_MachineKey_Config_In_subdir),
node);
}
if (parent != null)
{
_ValidationKey = parent.ValidationKey;
_DecryptionKey = parent.DecryptionKey;
_ValidationMode = parent.ValidationMode;
_AutogenKey = parent.AutogenKey;
}
XmlNode vNode = node.Attributes.RemoveNamedItem("validationKey");
XmlNode dNode = node.Attributes.RemoveNamedItem("decryptionKey");
int iMode = 0;
string [] modeStrings = { "SHA1", "MD5", "3DES" };
XmlNode mNode = HandlerBase.GetAndRemoveEnumAttribute(node, "validation", modeStrings, ref iMode);
if (mNode != null)
{
_ValidationMode = (MachineKeyValidationMode)iMode;
}
HandlerBase.CheckForUnrecognizedAttributes(node);
HandlerBase.CheckForChildNodes(node);
if (vNode != null && vNode.Value != null)
{
String strKey = vNode.Value;
bool fAppSpecific = strKey.EndsWith(",IsolateApps");
if (fAppSpecific)
{
strKey = strKey.Substring(0, strKey.Length - ",IsolateApps".Length);
}
if (strKey == "AutoGenerate") // case sensitive
{
_ValidationKey = new byte[64];
Buffer.BlockCopy(HttpRuntime.s_autogenKeys, 0, _ValidationKey, 0, 64);
}
else
{
if (strKey.Length > 128 || strKey.Length < 40)
{
throw new ConfigurationException(
HttpRuntime.FormatResourceString(
SR.Unable_to_get_cookie_authentication_validation_key, strKey.Length.ToString()),
vNode);
}
_ValidationKey = HexStringToByteArray(strKey);
if (_ValidationKey == null)
{
throw new ConfigurationException(
HttpRuntime.FormatResourceString(
SR.Invalid_validation_key),
vNode);
}
}
if (fAppSpecific)
{
int dwCode = SymbolHashCodeProvider.Default.GetHashCode(HttpContext.Current.Request.ApplicationPath);
_ValidationKey[0] = (byte)(dwCode & 0xff);
_ValidationKey[1] = (byte)((dwCode & 0xff00) >> 8);
_ValidationKey[2] = (byte)((dwCode & 0xff0000) >> 16);
_ValidationKey[3] = (byte)((dwCode & 0xff000000) >> 24);
}
}
if (dNode != null)
{
String strKey = dNode.Value;
bool fAppSpecific = strKey.EndsWith(",IsolateApps");
if (fAppSpecific)
{
strKey = strKey.Substring(0, strKey.Length - ",IsolateApps".Length);
}
if (strKey == "AutoGenerate") // case sensitive
{
_DecryptionKey = new byte[24];
Buffer.BlockCopy(HttpRuntime.s_autogenKeys, 64, _DecryptionKey, 0, 24);
_AutogenKey = true;
}
else
{
_AutogenKey = false;
if (strKey.Length == 48) // Make sure Triple DES is installed
{
TripleDESCryptoServiceProvider oTemp = null;
try {
oTemp = new TripleDESCryptoServiceProvider();
}
catch (Exception) {
}
if (oTemp == null)
{
throw new ConfigurationException(
HttpRuntime.FormatResourceString(
SR.cannot_use_Triple_DES),
dNode);
}
}
if (strKey.Length != 48 && strKey.Length != 16)
{
throw new ConfigurationException(
HttpRuntime.FormatResourceString(
SR.Unable_to_get_cookie_authentication_decryption_key, strKey.Length.ToString()),
dNode);
}
_DecryptionKey = HexStringToByteArray(strKey);
if (_DecryptionKey == null)
{
throw new ConfigurationException(
HttpRuntime.FormatResourceString(
SR.Invalid_decryption_key),
dNode);
}
}
if (fAppSpecific)
{
int dwCode = SymbolHashCodeProvider.Default.GetHashCode(HttpContext.Current.Request.ApplicationPath);
_DecryptionKey[0] = (byte)(dwCode & 0xff);
_DecryptionKey[1] = (byte)((dwCode & 0xff00) >> 8);
_DecryptionKey[2] = (byte)((dwCode & 0xff0000) >> 16);
_DecryptionKey[3] = (byte)((dwCode & 0xff000000) >> 24);
}
}
}