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//-----------------------------------------------------------------------
// <copyright file="XrdsDocument.cs" company="Outercurve Foundation">
// Copyright (c) Outercurve Foundation. All rights reserved.
// </copyright>
//-----------------------------------------------------------------------
namespace DotNetOpenAuth.Xrds {
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.IO;
using System.Linq;
using System.Xml;
using System.Xml.XPath;
using DotNetOpenAuth.Messaging;
using DotNetOpenAuth.OpenId;
/// <summary>
/// An XRDS document.
/// </summary>
internal class XrdsDocument : XrdsNode {
/// <summary>
/// The namespace used by XML digital signatures.
/// </summary>
private const string XmlDSigNamespace = "http://www.w3.org/2000/09/xmldsig#";
/// <summary>
/// The namespace used by Google Apps for Domains for OpenID URI templates.
/// </summary>
private const string GoogleOpenIdNamespace = "http://namespace.google.com/openid/xmlns";
/// <summary>
/// Initializes a new instance of the <see cref="XrdsDocument"/> class.
/// </summary>
/// <param name="xrdsNavigator">The root node of the XRDS document.</param>
public XrdsDocument(XPathNavigator xrdsNavigator)
: base(xrdsNavigator) {
XmlNamespaceResolver.AddNamespace("xrd", XrdsNode.XrdNamespace);
XmlNamespaceResolver.AddNamespace("xrds", XrdsNode.XrdsNamespace);
XmlNamespaceResolver.AddNamespace("openid10", Protocol.V10.XmlNamespace);
XmlNamespaceResolver.AddNamespace("ds", XmlDSigNamespace);
XmlNamespaceResolver.AddNamespace("google", GoogleOpenIdNamespace);
}
/// <summary>
/// Initializes a new instance of the <see cref="XrdsDocument"/> class.
/// </summary>
/// <param name="reader">The Xml reader positioned at the root node of the XRDS document.</param>
public XrdsDocument(XmlReader reader)
: this(new XPathDocument(reader).CreateNavigator()) { }
/// <summary>
/// Initializes a new instance of the <see cref="XrdsDocument"/> class.
/// </summary>
/// <param name="xml">The text that is the XRDS document.</param>
[SuppressMessage("Microsoft.Reliability", "CA2000:Dispose objects before losing scope", Justification = "Fixing would decrease readability, and not likely avoid any finalizer on a StringReader anyway.")]
public XrdsDocument(string xml)
: this(new XPathDocument(XmlReader.Create(new StringReader(xml), MessagingUtilities.CreateUntrustedXmlReaderSettings())).CreateNavigator()) { }
/// <summary>
/// Gets the XRD child elements of the document.
/// </summary>
public IEnumerable<XrdElement> XrdElements {
get {
// We may be looking at a full XRDS document (in the case of YADIS discovery)
// or we may be looking at just an individual XRD element from a larger document
// if we asked xri.net for just one.
if (Node.SelectSingleNode("/xrds:XRDS", XmlNamespaceResolver) != null) {
foreach (XPathNavigator node in Node.Select("/xrds:XRDS/xrd:XRD", XmlNamespaceResolver)) {
yield return new XrdElement(node, this);
}
} else {
XPathNavigator node = Node.SelectSingleNode("/xrd:XRD", XmlNamespaceResolver);
if (node != null) {
yield return new XrdElement(node, this);
}
}
}
}
/// <summary>
/// Gets a value indicating whether all child XRD elements were resolved successfully.
/// </summary>
internal bool IsXrdResolutionSuccessful {
get { return this.XrdElements.All(xrd => xrd.IsXriResolutionSuccessful); }
}
}
}
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