/
EndpointIdentity.cs
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/
EndpointIdentity.cs
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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System.Collections.Generic;
using System.IdentityModel.Claims;
using System.Xml;
namespace System.ServiceModel
{
public abstract class EndpointIdentity
{
private Claim _identityClaim;
private IEqualityComparer<Claim> _claimComparer;
protected EndpointIdentity()
{
}
protected void Initialize(Claim identityClaim)
{
if (identityClaim == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull(nameof(identityClaim));
}
Initialize(identityClaim, null);
}
protected void Initialize(Claim identityClaim, IEqualityComparer<Claim> claimComparer)
{
_identityClaim = identityClaim ?? throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull(nameof(identityClaim));
_claimComparer = claimComparer;
}
public Claim IdentityClaim
{
get
{
if (_identityClaim == null)
{
EnsureIdentityClaim();
}
return _identityClaim;
}
}
public static EndpointIdentity CreateIdentity(Claim identity)
{
if (identity == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull(nameof(identity));
}
if (identity.ClaimType.Equals(ClaimTypes.Dns))
{
return new DnsEndpointIdentity(identity);
}
else if (identity.ClaimType.Equals(ClaimTypes.Spn))
{
return new SpnEndpointIdentity(identity);
}
else if (identity.ClaimType.Equals(ClaimTypes.Upn))
{
return new UpnEndpointIdentity(identity);
}
else if (identity.ClaimType.Equals(ClaimTypes.Rsa))
{
return new RsaEndpointIdentity(identity);
}
else
{
return new GeneralEndpointIdentity(identity);
}
}
public static EndpointIdentity CreateDnsIdentity(string dnsName)
{
return new DnsEndpointIdentity(dnsName);
}
public static EndpointIdentity CreateSpnIdentity(string spnName)
{
return new SpnEndpointIdentity(spnName);
}
public static EndpointIdentity CreateUpnIdentity(string upnName)
{
return new UpnEndpointIdentity(upnName);
}
internal virtual void EnsureIdentityClaim()
{
}
public override bool Equals(object obj)
{
if (obj == (object)this)
{
return true;
}
// as handles null do we need the double null check?
if (obj == null)
{
return false;
}
EndpointIdentity otherIdentity = obj as EndpointIdentity;
if (otherIdentity == null)
{
return false;
}
return Matches(otherIdentity.IdentityClaim);
}
public override int GetHashCode()
{
return GetClaimComparer().GetHashCode(IdentityClaim);
}
internal bool Matches(Claim claim)
{
return GetClaimComparer().Equals(IdentityClaim, claim);
}
private IEqualityComparer<Claim> GetClaimComparer()
{
if (_claimComparer == null)
{
throw ExceptionHelper.PlatformNotSupported("EndpointIdentity.GetClaimComparer is not supported.");
}
return _claimComparer;
}
internal static EndpointIdentity ReadIdentity(XmlDictionaryReader reader)
{
if (reader == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull(nameof(reader));
}
EndpointIdentity readIdentity = null;
reader.MoveToContent();
if (reader.IsEmptyElement)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new XmlException(SRP.Format(SRP.UnexpectedEmptyElementExpectingClaim, XD.AddressingDictionary.Identity.Value, XD.AddressingDictionary.IdentityExtensionNamespace.Value)));
}
reader.ReadStartElement(XD.AddressingDictionary.Identity, XD.AddressingDictionary.IdentityExtensionNamespace);
if (reader.IsStartElement(XD.AddressingDictionary.Spn, XD.AddressingDictionary.IdentityExtensionNamespace))
{
readIdentity = new SpnEndpointIdentity(reader.ReadElementString());
}
else if (reader.IsStartElement(XD.AddressingDictionary.Upn, XD.AddressingDictionary.IdentityExtensionNamespace))
{
readIdentity = new UpnEndpointIdentity(reader.ReadElementString());
}
else if (reader.IsStartElement(XD.AddressingDictionary.Dns, XD.AddressingDictionary.IdentityExtensionNamespace))
{
readIdentity = new DnsEndpointIdentity(reader.ReadElementString());
}
else if (reader.IsStartElement(XD.XmlSignatureDictionary.KeyInfo, XD.XmlSignatureDictionary.Namespace))
{
reader.ReadStartElement();
if (reader.IsStartElement(XD.XmlSignatureDictionary.X509Data, XD.XmlSignatureDictionary.Namespace))
{
readIdentity = new X509CertificateEndpointIdentity(reader);
}
else if (reader.IsStartElement(XD.XmlSignatureDictionary.RsaKeyValue, XD.XmlSignatureDictionary.Namespace))
{
readIdentity = new RsaEndpointIdentity(reader);
}
else
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new XmlException(SRP.Format(SRP.UnrecognizedIdentityType, reader.Name, reader.NamespaceURI)));
}
reader.ReadEndElement();
}
else if (reader.NodeType == XmlNodeType.Element)
{
//
// Something unknown
//
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new XmlException(SRP.Format(SRP.UnrecognizedIdentityType, reader.Name, reader.NamespaceURI)));
}
else
{
//
// EndpointIdentity element is empty or some other invalid xml
//
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new XmlException(SRP.InvalidIdentityElement));
}
reader.ReadEndElement();
return readIdentity;
}
internal void WriteTo(XmlDictionaryWriter writer)
{
if (writer == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull(nameof(writer));
}
writer.WriteStartElement(XD.AddressingDictionary.Identity, XD.AddressingDictionary.IdentityExtensionNamespace);
WriteContentsTo(writer);
writer.WriteEndElement();
}
internal virtual void WriteContentsTo(XmlDictionaryWriter writer)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SRP.Format(SRP.UnrecognizedIdentityPropertyType, IdentityClaim.GetType().ToString())));
}
}
}