private void LoadXmlNodeListInput(XmlNodeList nodeList)
{
// Use C14N to get a document
XmlResolver resolver = (ResolverSet ? _xmlResolver : new XmlSecureResolver(new XmlUrlResolver(), BaseURI));
CanonicalXml c14n = new CanonicalXml((XmlNodeList)nodeList, resolver, true);
using (MemoryStream ms = new MemoryStream(c14n.GetBytes()))
{
LoadStreamInput(ms);
}
}
public override void LoadInput(object obj)
{
XmlResolver resolver = (ResolverSet ? _xmlResolver : new XmlSecureResolver(new XmlUrlResolver(), BaseURI));
if (obj is Stream)
{
_cXml = new CanonicalXml((Stream)obj, _includeComments, resolver, BaseURI);
return;
}
if (obj is XmlDocument)
{
_cXml = new CanonicalXml((XmlDocument)obj, resolver, _includeComments);
return;
}
if (obj is XmlNodeList)
{
_cXml = new CanonicalXml((XmlNodeList)obj, resolver, _includeComments);
}
else
{
throw new ArgumentException(SR.Cryptography_Xml_IncorrectObjectType, nameof(obj));
}
}
public override void LoadInput(object obj)
{
if (_inputStream != null)
{
_inputStream.Close();
}
_inputStream = new MemoryStream();
if (obj is Stream)
{
_inputStream = (Stream)obj;
}
else if (obj is XmlNodeList)
{
CanonicalXml xmlDoc = new CanonicalXml((XmlNodeList)obj, null, _includeComments);
byte[] buffer = xmlDoc.GetBytes();
if (buffer == null)
{
return;
}
_inputStream.Write(buffer, 0, buffer.Length);
_inputStream.Flush();
_inputStream.Position = 0;
}
else if (obj is XmlDocument)
{
CanonicalXml xmlDoc = new CanonicalXml((XmlDocument)obj, null, _includeComments);
byte[] buffer = xmlDoc.GetBytes();
if (buffer == null)
{
return;
}
_inputStream.Write(buffer, 0, buffer.Length);
_inputStream.Flush();
_inputStream.Position = 0;
}
}
// The goal behind this method is to pump the input stream through the transforms and get back something that
// can be hashed
internal Stream TransformToOctetStream(object inputObject, Type inputType, XmlResolver resolver, string baseUri)
{
object currentInput = inputObject;
foreach (Transform transform in _transforms)
{
if (currentInput == null || transform.AcceptsType(currentInput.GetType()))
{
//in this case, no translation necessary, pump it through
transform.Resolver = resolver;
transform.BaseURI = baseUri;
transform.LoadInput(currentInput);
currentInput = transform.GetOutput();
}
else
{
// We need translation
// For now, we just know about Stream->{XmlNodeList,XmlDocument} and {XmlNodeList,XmlDocument}->Stream
if (currentInput is Stream)
{
if (transform.AcceptsType(typeof(XmlDocument)))
{
Stream currentInputStream = currentInput as Stream;
XmlDocument doc = new XmlDocument();
doc.PreserveWhitespace = true;
XmlReader valReader = Utils.PreProcessStreamInput(currentInputStream, resolver, baseUri);
doc.Load(valReader);
transform.LoadInput(doc);
currentInputStream.Close();
currentInput = transform.GetOutput();
continue;
}
else
{
throw new CryptographicException(SR.Cryptography_Xml_TransformIncorrectInputType);
}
}
if (currentInput is XmlNodeList)
{
if (transform.AcceptsType(typeof(Stream)))
{
CanonicalXml c14n = new CanonicalXml((XmlNodeList)currentInput, resolver, false);
MemoryStream ms = new MemoryStream(c14n.GetBytes());
transform.LoadInput(ms);
currentInput = transform.GetOutput();
ms.Close();
continue;
}
else
{
throw new CryptographicException(SR.Cryptography_Xml_TransformIncorrectInputType);
}
}
if (currentInput is XmlDocument)
{
if (transform.AcceptsType(typeof(Stream)))
{
CanonicalXml c14n = new CanonicalXml((XmlDocument)currentInput, resolver);
MemoryStream ms = new MemoryStream(c14n.GetBytes());
transform.LoadInput(ms);
currentInput = transform.GetOutput();
ms.Close();
continue;
}
else
{
throw new CryptographicException(SR.Cryptography_Xml_TransformIncorrectInputType);
}
}
throw new CryptographicException(SR.Cryptography_Xml_TransformIncorrectInputType);
}
}
// Final processing, either we already have a stream or have to canonicalize
if (currentInput is Stream)
{
return(currentInput as Stream);
}
if (currentInput is XmlNodeList)
{
CanonicalXml c14n = new CanonicalXml((XmlNodeList)currentInput, resolver, false);
MemoryStream ms = new MemoryStream(c14n.GetBytes());
return(ms);
}
if (currentInput is XmlDocument)
{
CanonicalXml c14n = new CanonicalXml((XmlDocument)currentInput, resolver);
MemoryStream ms = new MemoryStream(c14n.GetBytes());
return(ms);
}
throw new CryptographicException(SR.Cryptography_Xml_TransformIncorrectInputType);
}
