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//-----------------------------------------------------------------------
// <copyright file="AssociateRequest.cs" company="Andrew Arnott">
// Copyright (c) Andrew Arnott. All rights reserved.
// </copyright>
//-----------------------------------------------------------------------
namespace DotNetOpenAuth.OpenId.Messages {
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Diagnostics.Contracts;
using System.Linq;
using System.Text;
using DotNetOpenAuth.Messaging;
/// <summary>
/// An OpenID direct request from Relying Party to Provider to initiate an association.
/// </summary>
[DebuggerDisplay("OpenID {Version} {Mode} {AssociationType} {SessionType}")]
internal abstract class AssociateRequest : RequestBase {
/// <summary>
/// Initializes a new instance of the <see cref="AssociateRequest"/> class.
/// </summary>
/// <param name="version">The OpenID version this message must comply with.</param>
/// <param name="providerEndpoint">The OpenID Provider endpoint.</param>
protected AssociateRequest(Version version, Uri providerEndpoint)
: base(version, providerEndpoint, GetProtocolConstant(version, p => p.Args.Mode.associate), MessageTransport.Direct) {
}
/// <summary>
/// Gets or sets the preferred association type. The association type defines the algorithm to be used to sign subsequent messages.
/// </summary>
/// <value>Value: A valid association type from Section 8.3.</value>
[MessagePart("openid.assoc_type", IsRequired = true, AllowEmpty = false)]
internal string AssociationType { get; set; }
/// <summary>
/// Gets or sets the preferred association session type. This defines the method used to encrypt the association's MAC key in transit.
/// </summary>
/// <value>Value: A valid association session type from Section 8.4 (Association Session Types). </value>
/// <remarks>Note: Unless using transport layer encryption, "no-encryption" MUST NOT be used. </remarks>
[MessagePart("openid.session_type", IsRequired = false, AllowEmpty = true)]
[MessagePart("openid.session_type", IsRequired = true, AllowEmpty = false, MinVersion = "2.0")]
internal string SessionType { get; set; }
/// <summary>
/// Checks the message state for conformity to the protocol specification
/// and throws an exception if the message is invalid.
/// </summary>
/// <remarks>
/// <para>Some messages have required fields, or combinations of fields that must relate to each other
/// in specialized ways. After deserializing a message, this method checks the state of the
/// message to see if it conforms to the protocol.</para>
/// <para>Note that this property should <i>not</i> check signatures or perform any state checks
/// outside this scope of this particular message.</para>
/// </remarks>
/// <exception cref="ProtocolException">Thrown if the message is invalid.</exception>
public override void EnsureValidMessage() {
base.EnsureValidMessage();
ErrorUtilities.VerifyProtocol(
!string.Equals(this.SessionType, Protocol.Args.SessionType.NoEncryption, StringComparison.Ordinal) || this.Recipient.IsTransportSecure(),
OpenIdStrings.NoEncryptionSessionRequiresHttps,
this);
}
}
}
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