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//-----------------------------------------------------------------------
// <copyright file="OpenIdProviderMessageFactory.cs" company="Andrew Arnott">
// Copyright (c) Andrew Arnott. All rights reserved.
// </copyright>
//-----------------------------------------------------------------------
namespace DotNetOpenAuth.OpenId.ChannelElements {
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using DotNetOpenAuth.Messaging;
using DotNetOpenAuth.OpenId.Messages;
/// <summary>
/// OpenID Provider message factory.
/// </summary>
internal class OpenIdProviderMessageFactory : IMessageFactory {
/// <summary>
/// Analyzes an incoming request message payload to discover what kind of
/// message is embedded in it and returns the type, or null if no match is found.
/// </summary>
/// <param name="recipient">The intended or actual recipient of the request message.</param>
/// <param name="fields">The name/value pairs that make up the message payload.</param>
/// <returns>
/// A newly instantiated <see cref="IProtocolMessage"/>-derived object that this message can
/// deserialize to. Null if the request isn't recognized as a valid protocol message.
/// </returns>
public IDirectedProtocolMessage GetNewRequestMessage(MessageReceivingEndpoint recipient, IDictionary<string, string> fields) {
RequestBase message = null;
// Discern the OpenID version of the message.
Protocol protocol = Protocol.V11;
string ns;
if (fields.TryGetValue(Protocol.V20.openid.ns, out ns)) {
ErrorUtilities.VerifyProtocol(string.Equals(ns, Protocol.OpenId2Namespace, StringComparison.Ordinal), MessagingStrings.UnexpectedMessagePartValue, Protocol.V20.openid.ns, ns);
protocol = Protocol.V20;
}
string mode;
if (fields.TryGetValue(protocol.openid.mode, out mode)) {
if (string.Equals(mode, protocol.Args.Mode.associate)) {
if (fields.ContainsKey(protocol.openid.dh_consumer_public)) {
message = new AssociateDiffieHellmanProviderRequest(protocol.Version, recipient.Location);
} else {
message = new AssociateUnencryptedProviderRequest(protocol.Version, recipient.Location);
}
} else if (string.Equals(mode, protocol.Args.Mode.checkid_setup) ||
string.Equals(mode, protocol.Args.Mode.checkid_immediate)) {
AuthenticationRequestMode authMode = string.Equals(mode, protocol.Args.Mode.checkid_immediate) ? AuthenticationRequestMode.Immediate : AuthenticationRequestMode.Setup;
if (fields.ContainsKey(protocol.openid.identity)) {
message = new CheckIdRequest(protocol.Version, recipient.Location, authMode);
} else {
ErrorUtilities.VerifyProtocol(!fields.ContainsKey(protocol.openid.claimed_id), OpenIdStrings.IdentityAndClaimedIdentifierMustBeBothPresentOrAbsent);
message = new SignedResponseRequest(protocol.Version, recipient.Location, authMode);
}
} else if (string.Equals(mode, protocol.Args.Mode.check_authentication)) {
message = new CheckAuthenticationRequest(protocol.Version, recipient.Location);
} else {
ErrorUtilities.ThrowProtocol(MessagingStrings.UnexpectedMessagePartValue, protocol.openid.mode, mode);
}
}
if (message != null) {
message.SetAsIncoming();
}
return message;
}
/// <summary>
/// Analyzes an incoming request message payload to discover what kind of
/// message is embedded in it and returns the type, or null if no match is found.
/// </summary>
/// <param name="request">The message that was sent as a request that resulted in the response.</param>
/// <param name="fields">The name/value pairs that make up the message payload.</param>
/// <returns>
/// A newly instantiated <see cref="IProtocolMessage"/>-derived object that this message can
/// deserialize to. Null if the request isn't recognized as a valid protocol message.
/// </returns>
public IDirectResponseProtocolMessage GetNewResponseMessage(IDirectedProtocolMessage request, IDictionary<string, string> fields) {
// OpenID Providers make no outbound requests, and thus receive no direct response messages.
throw new NotImplementedException();
}
}
}
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