2 // System.Xml.XmlResolver.cs
5 // Jason Diamond (jason@injektilo.org)
6 // Atsushi Enomoto (atsushi@ximian.com)
8 // (C) 2001 Jason Diamond http://injektilo.org/
9 // (C) 2004 Novell Inc.
13 // Permission is hereby granted, free of charge, to any person obtaining
14 // a copy of this software and associated documentation files (the
15 // "Software"), to deal in the Software without restriction, including
16 // without limitation the rights to use, copy, modify, merge, publish,
17 // distribute, sublicense, and/or sell copies of the Software, and to
18 // permit persons to whom the Software is furnished to do so, subject to
19 // the following conditions:
21 // The above copyright notice and this permission notice shall be
22 // included in all copies or substantial portions of the Software.
24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
35 using System.Security.Permissions;
39 public abstract class XmlResolver
42 public abstract ICredentials Credentials { set; }
45 public abstract object GetEntity (
50 [PermissionSet (SecurityAction.InheritanceDemand, Unrestricted = true)]
51 public virtual Uri ResolveUri (Uri baseUri, string relativeUri)
53 if (baseUri == null) {
54 if (relativeUri == null)
55 throw new ArgumentNullException ("Either baseUri or relativeUri are required.");
56 // Don't ignore such case that relativeUri is in fact absolute uri (e.g. ResolveUri (null, "http://foo.com")).
57 if (relativeUri.StartsWith ("http:") ||
58 relativeUri.StartsWith ("https:") ||
59 relativeUri.StartsWith ("file:"))
60 return new Uri (relativeUri);
62 // extraneous "/a" is required because current Uri stuff
63 // seems ignorant of difference between "." and "./".
64 // I'd be appleciate if it is fixed with better solution.
65 return new Uri (Path.GetFullPath (relativeUri));
66 // return new Uri (new Uri (Path.GetFullPath ("./a")), EscapeRelativeUriBody (relativeUri));
69 if (relativeUri == null)
72 return new Uri (baseUri, EscapeRelativeUriBody (relativeUri));
75 // see also XmlUrlResolver.UnescapeRelativeUriBody().
76 private string EscapeRelativeUriBody (string src)
78 return src.Replace ("<", "%3C")
82 .Replace ("\"", "%22");