From 62d9eb1ec7da1b7017818e5620c2334ad336ac2f Mon Sep 17 00:00:00 2001 From: Luke Pulverenti Date: Sun, 11 Sep 2016 03:33:53 -0400 Subject: rework upnp discovery --- Mono.Nat/Upnp/Messages/UpnpMessage.cs | 132 ++++++++++++++++++++++++++++++++++ 1 file changed, 132 insertions(+) create mode 100644 Mono.Nat/Upnp/Messages/UpnpMessage.cs (limited to 'Mono.Nat/Upnp/Messages/UpnpMessage.cs') diff --git a/Mono.Nat/Upnp/Messages/UpnpMessage.cs b/Mono.Nat/Upnp/Messages/UpnpMessage.cs new file mode 100644 index 0000000000..44c16eec60 --- /dev/null +++ b/Mono.Nat/Upnp/Messages/UpnpMessage.cs @@ -0,0 +1,132 @@ +// +// Authors: +// Alan McGovern alan.mcgovern@gmail.com +// +// Copyright (C) 2006 Alan McGovern +// +// Permission is hereby granted, free of charge, to any person obtaining +// a copy of this software and associated documentation files (the +// "Software"), to deal in the Software without restriction, including +// without limitation the rights to use, copy, modify, merge, publish, +// distribute, sublicense, and/or sell copies of the Software, and to +// permit persons to whom the Software is furnished to do so, subject to +// the following conditions: +// +// The above copyright notice and this permission notice shall be +// included in all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE +// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +// + +using System; +using System.Diagnostics; +using System.Xml; +using System.Net; +using System.IO; +using System.Text; +using System.Globalization; + +namespace Mono.Nat.Upnp +{ + internal abstract class MessageBase + { + internal static readonly CultureInfo Culture = CultureInfo.InvariantCulture; + protected UpnpNatDevice device; + + protected MessageBase(UpnpNatDevice device) + { + this.device = device; + } + + protected WebRequest CreateRequest(string upnpMethod, string methodParameters, out byte[] body) + { + string ss = "http://" + this.device.HostEndPoint.ToString() + this.device.ControlUrl; + NatUtility.Log("Initiating request to: {0}", ss); + Uri location = new Uri(ss); + + HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(location); + req.KeepAlive = false; + req.Method = "POST"; + req.ContentType = "text/xml; charset=\"utf-8\""; + req.Headers.Add("SOAPACTION", "\"" + device.ServiceType + "#" + upnpMethod + "\""); + + string bodyString = "" + + "" + + "" + + methodParameters + + "" + + "" + + "\r\n\r\n"; + + body = System.Text.Encoding.UTF8.GetBytes(bodyString); + return req; + } + + public static MessageBase Decode(UpnpNatDevice device, string message) + { + XmlNode node; + XmlDocument doc = new XmlDocument(); + doc.LoadXml(message); + + XmlNamespaceManager nsm = new XmlNamespaceManager(doc.NameTable); + + // Error messages should be found under this namespace + nsm.AddNamespace("errorNs", "urn:schemas-upnp-org:control-1-0"); + nsm.AddNamespace("responseNs", device.ServiceType); + + // Check to see if we have a fault code message. + if ((node = doc.SelectSingleNode("//errorNs:UPnPError", nsm)) != null) { + string errorCode = node["errorCode"] != null ? node["errorCode"].InnerText : ""; + string errorDescription = node["errorDescription"] != null ? node["errorDescription"].InnerText : ""; + + return new ErrorMessage(Convert.ToInt32(errorCode, CultureInfo.InvariantCulture), errorDescription); + } + + if ((doc.SelectSingleNode("//responseNs:AddPortMappingResponse", nsm)) != null) + return new CreatePortMappingResponseMessage(); + + if ((doc.SelectSingleNode("//responseNs:DeletePortMappingResponse", nsm)) != null) + return new DeletePortMapResponseMessage(); + + if ((node = doc.SelectSingleNode("//responseNs:GetExternalIPAddressResponse", nsm)) != null) { + string newExternalIPAddress = node["NewExternalIPAddress"] != null ? node["NewExternalIPAddress"].InnerText : ""; + return new GetExternalIPAddressResponseMessage(newExternalIPAddress); + } + + if ((node = doc.SelectSingleNode("//responseNs:GetGenericPortMappingEntryResponse", nsm)) != null) + return new GetGenericPortMappingEntryResponseMessage(node, true); + + if ((node = doc.SelectSingleNode("//responseNs:GetSpecificPortMappingEntryResponse", nsm)) != null) + return new GetGenericPortMappingEntryResponseMessage(node, false); + + NatUtility.Log("Unknown message returned. Please send me back the following XML:"); + NatUtility.Log(message); + return null; + } + + public abstract WebRequest Encode(out byte[] body); + + internal static void WriteFullElement(XmlWriter writer, string element, string value) + { + writer.WriteStartElement(element); + writer.WriteString(value); + writer.WriteEndElement(); + } + + internal static XmlWriter CreateWriter(StringBuilder sb) + { + XmlWriterSettings settings = new XmlWriterSettings(); + settings.ConformanceLevel = ConformanceLevel.Fragment; + return XmlWriter.Create(sb, settings); + } + } +} -- cgit v1.2.3