public PhpString C14N(
bool exclusive = false,
bool with_comments = false,
PhpArray xpath = null,
PhpArray ns_prefixes = null)
{
System.Security.Cryptography.Xml.XmlDsigC14NTransform transform = new System.Security.Cryptography.Xml.XmlDsigC14NTransform();
transform.LoadInput(XmlNode.GetXmlDocument());
System.IO.MemoryStream stream = (System.IO.MemoryStream)transform.GetOutput(typeof(System.IO.Stream));
return(new PhpString(stream.ToArray()));
}
public long C14NFile(
Context ctx,
string uri,
bool exclusive = false,
bool with_comments = false,
PhpArray xpath = null,
PhpArray ns_prefixes = null)
{
using var stream = PhpStream.Open(ctx, uri, StreamOpenMode.WriteBinary);
if (stream != null)
{
var transform = new System.Security.Cryptography.Xml.XmlDsigC14NTransform();
transform.LoadInput(XmlNode.GetXmlDocument());
var output = (System.IO.MemoryStream)transform.GetOutput(typeof(System.IO.Stream));
output.CopyTo(stream.RawStream);
return(output.Length);
}
return(-1); // FALSE
}
/// <summary>
/// Set the IRmark for a
/// </summary>
/// <param name="XmlFile"></param>
/// <returns></returns>
public XmlDocument SetIRmark(XmlDocument XmlFile)
{
// Loads XML document into byte array
byte[] bytes = Encoding.UTF8.GetBytes(XmlFile.OuterXml);
string vbLf = "\n";
string vbCrLf = "\r\n";
string result = String.Empty;
string text = Encoding.UTF8.GetString(bytes);
XmlNode root = XmlFile.DocumentElement;
XmlNamespaceManager nsManager = new XmlNamespaceManager(XmlFile.NameTable);
nsManager.AddNamespace("govtalkgateway", XmlFile.DocumentElement.NamespaceURI);
// Create an XML document of just the Body element
XmlNode bodyNode = XmlFile.SelectSingleNode("//govtalkgateway:Body", nsManager);
//nsManager.AddNamespace("ir68", bodyNode.FirstChild.NextSibling.NamespaceURI);
nsManager.AddNamespace("ir68", "http://www.govtalk.gov.uk/taxation/charities/r68/2");
XmlDocument xmlBody = new XmlDocument();
xmlBody.PreserveWhitespace = true;
xmlBody.LoadXml(bodyNode.OuterXml);
// Remove any existing IRmark
XmlNode nodeIr = xmlBody.SelectSingleNode("//ir68:IRmark", nsManager);
XmlNode irMarkPlaceholder = nodeIr;
if (nodeIr != null)
{
irMarkPlaceholder = nodeIr.PreviousSibling;
nodeIr.ParentNode.RemoveChild(nodeIr);
}
// Normalise the document using C14N (Canonicalisation)
System.Security.Cryptography.Xml.XmlDsigC14NTransform c14n = new System.Security.Cryptography.Xml.XmlDsigC14NTransform();
c14n.LoadInput(xmlBody);
using (Stream stream = (Stream)c14n.GetOutput())
{
byte[] buffer = new byte[stream.Length];
// convert to string and normalise line endings
stream.Read(buffer, 0, (int)stream.Length);
text = Encoding.UTF8.GetString(buffer);
text = text.Replace("
", "");
text = text.Replace(vbCrLf, vbLf);
// convert the final document back into a byte array
byte[] textBytes = Encoding.UTF8.GetBytes(text);
//create the SHA-1 hash from the final document
System.Security.Cryptography.SHA1 sha = System.Security.Cryptography.SHA1.Create();
byte[] hash = sha.ComputeHash(textBytes);
result = Convert.ToBase64String(hash);
_loggingService.LogInfo(typeof(GovTalkMessageHelper), string.Format("IRmark created: {0}",result));
}
// attempt to re-insert the IRmark
XmlNode irMarkNode = root.SelectSingleNode("//*[contains(name(),'IRmark')]");
if (!String.IsNullOrEmpty(irMarkNode.InnerText))
{
root.SelectSingleNode("//*[contains(name(),'IRmark')]").LastChild.Value = result;
}
else
{
if (root.SelectSingleNode("//*[contains(name(),'IRmark')]") != null)
{
irMarkNode.InnerText = result;
}
else
{
_loggingService.LogWarning(typeof(GovTalkMessageHelper), "No IRmark");
}
}
_loggingService.LogInfo(typeof(GovTalkMessageHelper), string.Format("IRmark inserted into XML Document."));
return XmlFile;
}
/// <summary>
/// Set the IRmark for a
/// </summary>
/// <param name="XmlFile"></param>
/// <returns></returns>
public XmlDocument SetIRmark(XmlDocument XmlFile)
{
// Loads XML document into byte array
byte[] bytes = Encoding.UTF8.GetBytes(XmlFile.OuterXml);
string vbLf = "\n";
string vbCrLf = "\r\n";
string result = String.Empty;
string text = Encoding.UTF8.GetString(bytes);
XmlNode root = XmlFile.DocumentElement;
XmlNamespaceManager nsManager = new XmlNamespaceManager(XmlFile.NameTable);
nsManager.AddNamespace("govtalkgateway", XmlFile.DocumentElement.NamespaceURI);
// Create an XML document of just the Body element
XmlNode bodyNode = XmlFile.SelectSingleNode("//govtalkgateway:Body", nsManager);
//nsManager.AddNamespace("ir68", bodyNode.FirstChild.NextSibling.NamespaceURI);
nsManager.AddNamespace("ir68", "http://www.govtalk.gov.uk/taxation/charities/r68/2");
XmlDocument xmlBody = new XmlDocument();
xmlBody.PreserveWhitespace = true;
xmlBody.LoadXml(bodyNode.OuterXml);
// Remove any existing IRmark
XmlNode nodeIr = xmlBody.SelectSingleNode("//ir68:IRmark", nsManager);
XmlNode irMarkPlaceholder = nodeIr;
if (nodeIr != null)
{
irMarkPlaceholder = nodeIr.PreviousSibling;
nodeIr.ParentNode.RemoveChild(nodeIr);
}
// Normalise the document using C14N (Canonicalisation)
System.Security.Cryptography.Xml.XmlDsigC14NTransform c14n = new System.Security.Cryptography.Xml.XmlDsigC14NTransform();
c14n.LoadInput(xmlBody);
using (Stream stream = (Stream)c14n.GetOutput())
{
byte[] buffer = new byte[stream.Length];
// convert to string and normalise line endings
stream.Read(buffer, 0, (int)stream.Length);
text = Encoding.UTF8.GetString(buffer);
text = text.Replace("
", "");
text = text.Replace(vbCrLf, vbLf);
// convert the final document back into a byte array
byte[] textBytes = Encoding.UTF8.GetBytes(text);
//create the SHA-1 hash from the final document
System.Security.Cryptography.SHA1 sha = System.Security.Cryptography.SHA1.Create();
byte[] hash = sha.ComputeHash(textBytes);
result = Convert.ToBase64String(hash);
_loggingService.LogInfo(typeof(GovTalkMessageHelper), string.Format("IRmark created: {0}", result));
}
// attempt to re-insert the IRmark
XmlNode irMarkNode = root.SelectSingleNode("//*[contains(name(),'IRmark')]");
if (!String.IsNullOrEmpty(irMarkNode.InnerText))
{
root.SelectSingleNode("//*[contains(name(),'IRmark')]").LastChild.Value = result;
}
else
{
if (root.SelectSingleNode("//*[contains(name(),'IRmark')]") != null)
{
irMarkNode.InnerText = result;
}
else
{
_loggingService.LogWarning(typeof(GovTalkMessageHelper), "No IRmark");
}
}
_loggingService.LogInfo(typeof(GovTalkMessageHelper), string.Format("IRmark inserted into XML Document."));
return(XmlFile);
}
private byte[] GetXDocumentHash(XDocument xdocument)
{
MemoryStream memoryStream = new MemoryStream();
using (XmlWriter xmlWriter = XmlWriter.Create(memoryStream))
{
xdocument.WriteTo(xmlWriter);
}
memoryStream.Position = 0;
var xfrm = new System.Security.Cryptography.Xml.XmlDsigC14NTransform(false);
xfrm.LoadInput(memoryStream);
byte[] result = xfrm.GetDigestedOutput(new System.Security.Cryptography.SHA1Managed());
return result;
}
