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//-----------------------------------------------------------------------
// <copyright file="ClientDescription.cs" company="Outercurve Foundation">
// Copyright (c) Outercurve Foundation. All rights reserved.
// </copyright>
//-----------------------------------------------------------------------
namespace DotNetOpenAuth.OAuth2 {
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using DotNetOpenAuth.Messaging;
/// <summary>
/// A default implementation of the <see cref="IClientDescription"/> interface.
/// </summary>
public class ClientDescription : IClientDescription {
/// <summary>
/// The client's secret, if any.
/// </summary>
private readonly string secret;
/// <summary>
/// Initializes a new instance of the <see cref="ClientDescription"/> class.
/// </summary>
/// <param name="secret">The secret.</param>
/// <param name="defaultCallback">The default callback.</param>
/// <param name="clientType">Type of the client.</param>
/// <param name="isCallbackAllowed">A delegate that determines whether the callback is allowed.</param>
public ClientDescription(string secret, Uri defaultCallback, ClientType clientType) {
this.secret = secret;
this.DefaultCallback = defaultCallback;
this.ClientType = clientType;
}
#region IClientDescription Members
/// <summary>
/// Gets the callback to use when an individual authorization request
/// does not include an explicit callback URI.
/// </summary>
/// <value>
/// An absolute URL; or <c>null</c> if none is registered.
/// </value>
public Uri DefaultCallback { get; private set; }
/// <summary>
/// Gets the type of the client.
/// </summary>
public ClientType ClientType { get; private set; }
/// <summary>
/// Gets a value indicating whether a non-empty secret is registered for this client.
/// </summary>
public virtual bool HasNonEmptySecret {
get { return !string.IsNullOrEmpty(this.secret); }
}
/// <summary>
/// Determines whether a callback URI included in a client's authorization request
/// is among those allowed callbacks for the registered client.
/// </summary>
/// <param name="callback">The absolute URI the client has requested the authorization result be received at. Never null.</param>
/// <returns>
/// <c>true</c> if the callback URL is allowable for this client; otherwise, <c>false</c>.
/// </returns>
/// <remarks>
/// This method may be overridden to allow for several callbacks to match.
/// </remarks>
public virtual bool IsCallbackAllowed(Uri callback) {
return EqualityComparer<Uri>.Default.Equals(this.DefaultCallback, callback);
}
/// <summary>
/// Checks whether the specified client secret is correct.
/// </summary>
/// <param name="secret">The secret obtained from the client.</param>
/// <returns><c>true</c> if the secret matches the one in the authorization server's record for the client; <c>false</c> otherwise.</returns>
/// <remarks>
/// All string equality checks, whether checking secrets or their hashes,
/// should be done using <see cref="MessagingUtilites.EqualsConstantTime"/> to mitigate timing attacks.
/// </remarks>
public virtual bool IsValidClientSecret(string secret) {
Requires.NotNullOrEmpty(secret, "secret");
return MessagingUtilities.EqualsConstantTime(secret, this.secret);
}
#endregion
}
}
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