mcs/class/Microsoft.Web.Services/Microsoft.Web.Services.Timestamp/TimestampInputFilter.cs

   1 //
   2 // TimestampInputFilter.cs: Timestamp SOAP Input Filter
   3 //
   4 // Author:
   5 //      Sebastien Pouliot (spouliot@motus.com)
   6 //
   7 // (C) 2002, 2003 Motus Technologies Inc. (http://www.motus.com)
   8 //
   9 // Licensed under MIT X11 (see LICENSE) with this specific addition:
  10 //
  11 // “This source code may incorporate intellectual property owned by Microsoft
  12 // Corporation. Our provision of this source code does not include any licenses
  13 // or any other rights to you under any Microsoft intellectual property. If you
  14 // would like a license from Microsoft (e.g. rebrand, redistribute), you need
  15 // to contact Microsoft directly.”
  16 //
  17
  18 using System;
  19 using System.Xml;
  20
  21 namespace Microsoft.Web.Services.Timestamp {
  22
  23         // Reference:
  24         // 1.   Inside the Web Services Enhancements Pipeline
  25         //      http://msdn.microsoft.com/library/en-us/dnwebsrv/html/insidewsepipe.asp
  26
  27         public class TimestampInputFilter : SoapInputFilter {
  28
  29                 public TimestampInputFilter () {}
  30
  31                 public override void ProcessMessage (SoapEnvelope envelope)
  32                 {
  33                         if (envelope == null)
  34                                 throw new ArgumentNullException ("envelope");
  35
  36                         if (envelope.Header != null) {
  37                                 XmlNodeList xnl = envelope.Header.GetElementsByTagName (WSTimestamp.ElementNames.Timestamp, WSTimestamp.NamespaceURI);
  38                                 if ((xnl != null) && (xnl.Count > 0)) {
  39                                         XmlElement xel = (XmlElement) xnl [0];
  40                                         envelope.Context.Timestamp.LoadXml (xel);
  41                                         if (envelope.Context.Timestamp.Expires < DateTime.UtcNow)
  42                                                 throw new TimestampFault ("Message Expired", null);
  43                                         envelope.Header.RemoveChild (xel);
  44                                 }
  45                         }
  46                 }
  47         }
  48 }