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//----------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//------------------------------------------------------------
namespace System.ServiceModel
{
using System;
using System.Net;
using System.Collections;
using System.Collections.Generic;
using System.Diagnostics;
using System.DirectoryServices;
using System.DirectoryServices.ActiveDirectory;
using System.Security.Principal;
using System.ServiceModel.Security;
using System.IdentityModel.Claims;
using System.IdentityModel.Policy;
using System.ServiceModel.Channels;
using System.ServiceModel.Diagnostics;
using System.Security.Cryptography;
using System.Security.Cryptography.X509Certificates;
using System.Xml;
using System.Xml.Serialization;
public abstract class EndpointIdentity
{
internal const StoreLocation defaultStoreLocation = StoreLocation.LocalMachine;
internal const StoreName defaultStoreName = StoreName.My;
internal const X509FindType defaultX509FindType = X509FindType.FindBySubjectDistinguishedName;
Claim identityClaim;
IEqualityComparer<Claim> claimComparer;
protected EndpointIdentity()
{
}
protected void Initialize(Claim identityClaim)
{
if (identityClaim == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("identityClaim");
Initialize(identityClaim, null);
}
protected void Initialize(Claim identityClaim, IEqualityComparer<Claim> claimComparer)
{
if (identityClaim == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("identityClaim");
this.identityClaim = identityClaim;
this.claimComparer = claimComparer;
}
public Claim IdentityClaim
{
get
{
if (this.identityClaim == null)
{
EnsureIdentityClaim();
}
return this.identityClaim;
}
}
public static EndpointIdentity CreateIdentity(Claim identity)
{
if (identity == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("identity");
// PreSharp Bug: Parameter 'identity.ClaimType' to this public method must be validated: A null-dereference can occur here.
#pragma warning suppress 56506 // Claim.ClaimType will never return null
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);
}
public static EndpointIdentity CreateRsaIdentity(string publicKey)
{
return new RsaEndpointIdentity(publicKey);
}
public static EndpointIdentity CreateRsaIdentity(X509Certificate2 certificate)
{
return new RsaEndpointIdentity(certificate);
}
public static EndpointIdentity CreateX509CertificateIdentity(X509Certificate2 certificate)
{
return new X509CertificateEndpointIdentity(certificate);
}
public static EndpointIdentity CreateX509CertificateIdentity(X509Certificate2 primaryCertificate, X509Certificate2Collection supportingCertificates)
{
return new X509CertificateEndpointIdentity(primaryCertificate, supportingCertificates);
}
internal static EndpointIdentity CreateX509CertificateIdentity(X509Chain certificateChain)
{
if (certificateChain == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("certificateChain");
if (certificateChain.ChainElements.Count == 0)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgument(SR.GetString(SR.X509ChainIsEmpty));
// The first element in the cert chain is the leaf certificate
// we want.
X509Certificate2 primaryCertificate = certificateChain.ChainElements[0].Certificate;
X509Certificate2Collection certificateCollection = new X509Certificate2Collection();
for (int i = 1; i < certificateChain.ChainElements.Count; ++i)
{
certificateCollection.Add(certificateChain.ChainElements[i].Certificate);
}
return new X509CertificateEndpointIdentity(primaryCertificate, certificateCollection);
}
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(this.IdentityClaim);
}
public override string ToString()
{
return "identity(" + this.IdentityClaim + ")";
}
internal bool Matches(Claim claim)
{
return GetClaimComparer().Equals(this.IdentityClaim, claim);
}
IEqualityComparer<Claim> GetClaimComparer()
{
if (this.claimComparer == null)
this.claimComparer = Claim.DefaultComparer;
return this.claimComparer;
}
internal static EndpointIdentity ReadIdentity(XmlDictionaryReader reader)
{
if (reader == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("reader");
EndpointIdentity readIdentity = null;
reader.MoveToContent();
if (reader.IsEmptyElement)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new XmlException(SR.GetString(SR.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(SR.GetString(SR.UnrecognizedIdentityType, reader.Name, reader.NamespaceURI)));
}
reader.ReadEndElement();
}
else if (reader.NodeType == XmlNodeType.Element)
{
//
// Something unknown
//
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new XmlException(SR.GetString(SR.UnrecognizedIdentityType, reader.Name, reader.NamespaceURI)));
}
else
{
//
// EndpointIdentity element is empty or some other invalid xml
//
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new XmlException(SR.GetString(SR.InvalidIdentityElement)));
}
reader.ReadEndElement();
return readIdentity;
}
internal void WriteTo(XmlDictionaryWriter writer)
{
if (writer == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("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(SR.GetString(SR.UnrecognizedIdentityPropertyType, this.IdentityClaim.GetType().ToString())));
}
}
}
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