This class encompasses the WSDL document working it’s way from top to bottom of the WSDL document layout and passes execution to the defined subclasses for parsing.

  • We create Namespaces and add to them using XmlNamespaceManager() and the AddNamespace() method.
  • We use XPath query to enumerate all the SOAP typenodes from the document using the SelectNodes() method.

CODE: 

using System;
using System.Collections.Generic;
using System.Xml;
using System.Xml.XPath;

namespace WSDL_Fuzzer
{
	public class WSDL
	{
		public WSDL(XmlDocument doc)
		{
			XmlNamespaceManager nsManager = new XmlNamespaceManager(doc.NameTable);
			nsManager.AddNamespace("wsdl", doc.DocumentElement.NamespaceURI);
			nsManager.AddNamespace("xs", "http://www.w3.org/2001/XMLSchema");

			ParseTypes(doc, nsManager);
			ParseMessages(doc, nsManager);
			ParsePortTypes(doc, nsManager);
			ParseBindings(doc, nsManager);
			ParseServices(doc, nsManager);
		}

		public List<SoapType> Types { get; set; }
		public List<SoapMessage> Messages { get; set; }
		public List<SoapPortType> PortTypes { get; set; }
		public List<SoapBinding> Bindings { get; set; }
		public List<SoapService> Services { get; set; }

		private void ParseTypes(XmlDocument wsdl, XmlNamespaceManager nsManager)
		{
			this.Types = new List<SoapType>();
			string xpath = "/wsdl:definitions/wsdl:types/xs:schema/xs:element";
			XmlNodeList nodes = wsdl.DocumentElement.SelectNodes(xpath, nsManager);
			foreach (XmlNode type in nodes)
				this.Types.Add(new SoapType(type));
		}

		private void ParseMessages(XmlDocument wsdl, XmlNamespaceManager nsManager)
		{
			this.Messages = new List<SoapMessage>();
			string xpath = "/wsdl:definitions/wsdl:message";
			XmlNodeList nodes = wsdl.DocumentElement.SelectNodes(xpath, nsManager);
			foreach (XmlNode node in nodes)
				this.Messages.Add(new SoapMessage(node));
		}

		private void ParsePortTypes(XmlDocument wsdl, XmlNamespaceManager nsManager)
		{
			this.PortTypes = new List<SoapPortType>();
			string xpath = "/wsdl:definitions/wsdl:portType";
			XmlNodeList nodes = wsdl.DocumentElement.SelectNodes(xpath, nsManager);
			foreach (XmlNode node in nodes)
				this.PortTypes.Add(new SoapPortType(node));
		}

		private void ParseBindings(XmlDocument wsdl, XmlNamespaceManager nsManager)
		{
			this.Bindings = new List<SoapBinding>();
			string xpath = "/wsdl:definitions/wsdl:binding";
			XmlNodeList nodes = wsdl.DocumentElement.SelectNodes(xpath, nsManager);
			foreach (XmlNode node in nodes)
				this.Bindings.Add(new SoapBinding(node));
		}

		private void ParseServices(XmlDocument wsdl, XmlNamespaceManager nsManager)
		{
			this.Services = new List<SoapService>();
			string xpath = "/wsdl:definitions/wsdl:service";
			XmlNodeList nodes = wsdl.DocumentElement.SelectNodes(xpath, nsManager);
			foreach (XmlNode node in nodes)
				this.Services.Add(new SoapService(node));
		}
	}
}