public void WriteHash(IHash hash, DocPosition docPos, AncestralNamespaceContextManager anc) { Hashtable nsLocallyDeclared = new Hashtable(); SortedList nsListToRender = new SortedList(new NamespaceSortOrder()); SortedList attrListToRender = new SortedList(new AttributeSortOrder()); UTF8Encoding utf8 = new UTF8Encoding(false); byte[] rgbData; XmlAttributeCollection attrList = Attributes; if (attrList != null) { foreach (XmlAttribute attr in attrList) { if (((CanonicalXmlAttribute)attr).IsInNodeSet || Utils.IsNamespaceNode(attr) || Utils.IsXmlNamespaceNode(attr)) { if (Utils.IsNamespaceNode(attr)) { anc.TrackNamespaceNode(attr, nsListToRender, nsLocallyDeclared); } else if (Utils.IsXmlNamespaceNode(attr)) { anc.TrackXmlNamespaceNode(attr, nsListToRender, attrListToRender, nsLocallyDeclared); } else if (IsInNodeSet) { attrListToRender.Add(attr, null); } } } } if (!Utils.IsCommittedNamespace(this, Prefix, NamespaceURI)) { string name = ((Prefix.Length > 0) ? "xmlns" + ":" + Prefix : "xmlns"); XmlAttribute nsattrib = (XmlAttribute)OwnerDocument.CreateAttribute(name); nsattrib.Value = NamespaceURI; anc.TrackNamespaceNode(nsattrib, nsListToRender, nsLocallyDeclared); } if (IsInNodeSet) { anc.GetNamespacesToRender(this, attrListToRender, nsListToRender, nsLocallyDeclared); rgbData = utf8.GetBytes("<" + Name); hash.BlockUpdate(rgbData, 0, rgbData.Length); foreach (object attr in nsListToRender.GetKeyList()) { (attr as CanonicalXmlAttribute).WriteHash(hash, docPos, anc); } foreach (object attr in attrListToRender.GetKeyList()) { (attr as CanonicalXmlAttribute).WriteHash(hash, docPos, anc); } rgbData = utf8.GetBytes(">"); hash.BlockUpdate(rgbData, 0, rgbData.Length); } anc.EnterElementContext(); anc.LoadUnrenderedNamespaces(nsLocallyDeclared); anc.LoadRenderedNamespaces(nsListToRender); XmlNodeList childNodes = ChildNodes; foreach (XmlNode childNode in childNodes) { CanonicalizationDispatcher.WriteHash(childNode, hash, docPos, anc); } anc.ExitElementContext(); if (IsInNodeSet) { rgbData = utf8.GetBytes("</" + Name + ">"); hash.BlockUpdate(rgbData, 0, rgbData.Length); } }
public void Write(StringBuilder strBuilder, DocPosition docPos, AncestralNamespaceContextManager anc) { Hashtable nsLocallyDeclared = new Hashtable(); SortedList nsListToRender = new SortedList(new NamespaceSortOrder()); SortedList attrListToRender = new SortedList(new AttributeSortOrder()); XmlAttributeCollection attrList = Attributes; if (attrList != null) { foreach (XmlAttribute attr in attrList) { if (((CanonicalXmlAttribute)attr).IsInNodeSet || Utils.IsNamespaceNode(attr) || Utils.IsXmlNamespaceNode(attr)) { if (Utils.IsNamespaceNode(attr)) { anc.TrackNamespaceNode(attr, nsListToRender, nsLocallyDeclared); } else if (Utils.IsXmlNamespaceNode(attr)) { anc.TrackXmlNamespaceNode(attr, nsListToRender, attrListToRender, nsLocallyDeclared); } else if (IsInNodeSet) { attrListToRender.Add(attr, null); } } } } if (!Utils.IsCommittedNamespace(this, Prefix, NamespaceURI)) { string name = ((Prefix.Length > 0) ? "xmlns" + ":" + Prefix : "xmlns"); XmlAttribute nsattrib = (XmlAttribute)OwnerDocument.CreateAttribute(name); nsattrib.Value = NamespaceURI; anc.TrackNamespaceNode(nsattrib, nsListToRender, nsLocallyDeclared); } if (IsInNodeSet) { anc.GetNamespacesToRender(this, attrListToRender, nsListToRender, nsLocallyDeclared); strBuilder.Append('<').Append(Name); foreach (object attr in nsListToRender.GetKeyList()) { (attr as CanonicalXmlAttribute).Write(strBuilder, docPos, anc); } foreach (object attr in attrListToRender.GetKeyList()) { (attr as CanonicalXmlAttribute).Write(strBuilder, docPos, anc); } strBuilder.Append('>'); } anc.EnterElementContext(); anc.LoadUnrenderedNamespaces(nsLocallyDeclared); anc.LoadRenderedNamespaces(nsListToRender); XmlNodeList childNodes = ChildNodes; foreach (XmlNode childNode in childNodes) { CanonicalizationDispatcher.Write(childNode, strBuilder, docPos, anc); } anc.ExitElementContext(); if (IsInNodeSet) { strBuilder.Append("</" + Name + ">"); } }
public override object GetOutput() { if (_containingDocument == null) { throw new System.Security.Cryptography.CryptographicException(SR.Cryptography_Xml_EnvelopedSignatureRequiresContext); } // If we have received an XmlNodeList as input if (_inputNodeList != null) { // If the position has not been set, then we don't want to remove any signature tags if (_signaturePosition == 0) { return(_inputNodeList); } XmlNodeList signatureList = _containingDocument.SelectNodes("//dsig:Signature", _nsm); if (signatureList == null) { return(_inputNodeList); } CanonicalXmlNodeList resultNodeList = new CanonicalXmlNodeList(); foreach (XmlNode node in _inputNodeList) { if (node == null) { continue; } // keep namespaces if (Utils.IsXmlNamespaceNode(node) || Utils.IsNamespaceNode(node)) { resultNodeList.Add(node); } else { // SelectSingleNode throws an exception for xmldecl PI for example, so we will just ignore those exceptions try { // Find the nearest signature ancestor tag XmlNode result = node.SelectSingleNode("ancestor-or-self::dsig:Signature[1]", _nsm); int position = 0; foreach (XmlNode node1 in signatureList) { position++; if (node1 == result) { break; } } if (result == null || position != _signaturePosition) { resultNodeList.Add(node); } } catch { } } } return(resultNodeList); } // Else we have received either a stream or a document as input else { XmlNodeList signatureList = _containingDocument.SelectNodes("//dsig:Signature", _nsm); if (signatureList == null) { return(_containingDocument); } if (signatureList.Count < _signaturePosition || _signaturePosition <= 0) { return(_containingDocument); } // Remove the signature node with all its children nodes signatureList[_signaturePosition - 1].ParentNode.RemoveChild(signatureList[_signaturePosition - 1]); return(_containingDocument); } }