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//-----------------------------------------------------------------------
// <copyright file="AuthServerUtilities.cs" company="Outercurve Foundation">
// Copyright (c) Outercurve Foundation. All rights reserved.
// </copyright>
//-----------------------------------------------------------------------
namespace DotNetOpenAuth.OAuth2 {
using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using DotNetOpenAuth.Messaging;
using DotNetOpenAuth.OAuth2.ChannelElements;
using DotNetOpenAuth.OAuth2.Messages;
using Validation;
/// <summary>
/// Utility methods for authorization servers.
/// </summary>
internal static class AuthServerUtilities {
/// <summary>
/// Gets information about the client with a given identifier.
/// </summary>
/// <param name="authorizationServer">The authorization server.</param>
/// <param name="clientIdentifier">The client identifier.</param>
/// <returns>The client information. Never null.</returns>
internal static IClientDescription GetClientOrThrow(this IAuthorizationServerHost authorizationServer, string clientIdentifier) {
Requires.NotNullOrEmpty(clientIdentifier, "clientIdentifier");
try {
var result = authorizationServer.GetClient(clientIdentifier);
ErrorUtilities.VerifyHost(result != null, OAuthStrings.ResultShouldNotBeNull, authorizationServer.GetType().FullName, "GetClient(string)");
return result;
} catch (KeyNotFoundException ex) {
throw ErrorUtilities.Wrap(ex, AuthServerStrings.ClientOrTokenSecretNotFound);
} catch (ArgumentException ex) {
throw ErrorUtilities.Wrap(ex, AuthServerStrings.ClientOrTokenSecretNotFound);
}
}
/// <summary>
/// Verifies a condition is true or throws an exception describing the problem.
/// </summary>
/// <param name="condition">The condition that evaluates to true to avoid an exception.</param>
/// <param name="requestMessage">The request message.</param>
/// <param name="error">A single error code from <see cref="Protocol.AccessTokenRequestErrorCodes"/>.</param>
/// <param name="authenticationModule">The authentication module from which to glean the WWW-Authenticate header when applicable.</param>
/// <param name="unformattedDescription">A human-readable UTF-8 encoded text providing additional information, used to assist the client developer in understanding the error that occurred.</param>
/// <param name="args">The formatting arguments to generate the actual description.</param>
internal static void TokenEndpointVerify(bool condition, AccessTokenRequestBase requestMessage, string error, ClientAuthenticationModule authenticationModule = null, string unformattedDescription = null, params object[] args) {
if (!condition) {
string description = unformattedDescription != null ? string.Format(CultureInfo.CurrentCulture, unformattedDescription, args) : null;
string wwwAuthenticateHeader = null;
if (authenticationModule != null) {
wwwAuthenticateHeader = authenticationModule.AuthenticateHeader;
}
throw new TokenEndpointProtocolException(requestMessage, error, description, authenticateHeader: wwwAuthenticateHeader);
}
}
}
}
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