mcs/class/Microsoft.Web.Services/Microsoft.Web.Services.Security/XmlDsigExcC14NTransform.cs

   1 //\r
   2 // XmlDsigExcC14NTransform.cs: \r
   3 //      Handles WS-Security XmlDsigExcC14NTransform\r
   4 //\r
   5 // Author:\r
   6 //      Sebastien Pouliot <sebastien@ximian.com>\r
   7 //      Aleksey Sanin (aleksey@aleksey.com)\r
   8 //\r
   9 // (C) 2002, 2003 Motus Technologies Inc. (http://www.motus.com)\r
  10 // (C) 2003 Aleksey Sanin (aleksey@aleksey.com)\r
  11 // (C) 2004 Novell (http://www.novell.com)\r
  12 //\r
  13 \r
  14 using System;\r
  15 using System.IO;\r
  16 using System.Security.Cryptography.Xml;\r
  17 using System.Xml;\r
  18 \r
  19 using Mono.Xml;\r
  20 \r
  21 namespace Microsoft.Web.Services.Security {\r
  22 \r
  23         public class XmlDsigExcC14NTransform : Transform {\r
  24 \r
  25                 public const string XmlDsigExcC14NTransformUrl = "http://www.w3.org/2001/10/xml-exc-c14n#";\r
  26                 public const string XmlDsigExcC14NWithCommentsTransformUrl = "http://www.w3.org/2001/10/xml-exc-c14n#WithComments";\r
  27 \r
  28                 private Type[] input;\r
  29                 private Type[] output;\r
  30                 private XmlCanonicalizer canonicalizer;\r
  31                 private Stream s;\r
  32                 private string prefixList;\r
  33                 private bool comments;\r
  34 \r
  35                 public XmlDsigExcC14NTransform () : this (false)\r
  36                 {\r
  37                 }\r
  38 \r
  39                 public XmlDsigExcC14NTransform (bool includeComments) \r
  40                 {\r
  41                         comments = includeComments;\r
  42                         canonicalizer = new XmlCanonicalizer (includeComments, true);\r
  43                 }\r
  44 \r
  45                 public XmlDsigExcC14NTransform (string inclusiveNamespacesPrefixList)\r
  46                         : this (false, inclusiveNamespacesPrefixList)\r
  47                 {\r
  48                 }\r
  49 \r
  50                 public XmlDsigExcC14NTransform (bool includeComments, string inclusiveNamespacesPrefixList)\r
  51                         : this (includeComments) \r
  52                 {\r
  53                         prefixList = inclusiveNamespacesPrefixList;\r
  54                 }\r
  55 \r
  56                 public string InclusiveNamespacesPrefixList {\r
  57                         get { return prefixList; }\r
  58                         set { prefixList = value; }\r
  59                 }\r
  60 \r
  61                 public override Type[] InputTypes {\r
  62                         get {\r
  63                                 if (input == null) {\r
  64                                         lock (this) {\r
  65                                                 // this way the result is cached if called multiple time\r
  66                                                 input = new Type [3];\r
  67                                                 input[0] = typeof (System.IO.Stream);\r
  68                                                 input[1] = typeof (System.Xml.XmlDocument);\r
  69                                                 input[2] = typeof (System.Xml.XmlNodeList);\r
  70                                         }\r
  71                                 }\r
  72                                 return input;\r
  73                         }\r
  74                 }\r
  75 \r
  76                 public override Type[] OutputTypes {\r
  77                         get {\r
  78                                 if (output == null) {\r
  79                                         lock (this) {\r
  80                                                 // this way the result is cached if called multiple time\r
  81                                                 output = new Type [1];\r
  82                                                 output[0] = typeof (System.IO.Stream);\r
  83                                         }\r
  84                                 }\r
  85                                 return output;\r
  86                         }\r
  87                 }\r
  88                 protected override XmlNodeList GetInnerXml () \r
  89                 {\r
  90                         return null; // THIS IS DOCUMENTED AS SUCH\r
  91                 }\r
  92 \r
  93                 public override object GetOutput () \r
  94                 {\r
  95                         return (object) s;\r
  96                 }\r
  97 \r
  98                 public override object GetOutput (Type type) \r
  99                 {\r
 100                         if (type != typeof (Stream))\r
 101                                 throw new ArgumentException ("type");\r
 102                         return GetOutput ();\r
 103                 }\r
 104 \r
 105                 public override void LoadInnerXml (XmlNodeList nodeList) \r
 106                 {\r
 107                         // documented as not changing the state of the transform\r
 108                 }\r
 109 \r
 110                 public override void LoadInput (object obj) \r
 111                 {\r
 112                         if (obj is Stream) {\r
 113                                 s = (obj as Stream);\r
 114                                 XmlDocument doc = new XmlDocument ();\r
 115                                 doc.PreserveWhitespace = true;  // REALLY IMPORTANT\r
 116                                 doc.Load (obj as Stream);\r
 117                                 s = canonicalizer.Canonicalize (doc);\r
 118                         } else if (obj is XmlDocument)\r
 119                                 s = canonicalizer.Canonicalize ((obj as XmlDocument));\r
 120                         else if (obj is XmlNodeList)\r
 121                                 s = canonicalizer.Canonicalize ((obj as XmlNodeList));\r
 122                         // note: there is no default are other types won't throw an exception\r
 123                 }\r
 124         }\r
 125 }\r