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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.Diagnostics.Contracts;
using System.Globalization;
using System.Linq;
using System.Text;
using DotNetOpenAuth.Messaging;
/// <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 IAuthorizationServer authorizationServer, string clientIdentifier) {
Requires.NotNullOrEmpty(clientIdentifier, "clientIdentifier");
Contract.Ensures(Contract.Result<IClientDescription>() != null);
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="error">A single error code from <see cref="Protocol.AccessTokenRequestErrorCodes"/>.</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, string error, string unformattedDescription = null, params object[] args) {
if (!condition) {
string description = unformattedDescription != null ? string.Format(CultureInfo.CurrentCulture, unformattedDescription, args) : null;
throw new TokenEndpointProtocolException(error, description);
}
}
}
}
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