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//-----------------------------------------------------------------------
// <copyright file="OAuthServiceProviderSecuritySettingsElement.cs" company="Andrew Arnott">
// Copyright (c) Andrew Arnott. All rights reserved.
// </copyright>
//-----------------------------------------------------------------------
namespace DotNetOpenAuth.Configuration {
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Linq;
using System.Text;
using DotNetOpenAuth.OAuth;
/// <summary>
/// Security settings that are applicable to service providers.
/// </summary>
internal class OAuthServiceProviderSecuritySettingsElement : ConfigurationElement {
/// <summary>
/// Gets the name of the @minimumRequiredOAuthVersion attribute.
/// </summary>
private const string MinimumRequiredOAuthVersionConfigName = "minimumRequiredOAuthVersion";
/// <summary>
/// Gets the name of the @maxAuthorizationTime attribute.
/// </summary>
private const string MaximumRequestTokenTimeToLiveConfigName = "maxAuthorizationTime";
/// <summary>
/// Initializes a new instance of the <see cref="OAuthServiceProviderSecuritySettingsElement"/> class.
/// </summary>
internal OAuthServiceProviderSecuritySettingsElement() {
}
/// <summary>
/// Gets or sets the minimum OAuth version a Consumer is required to support in order for this library to interoperate with it.
/// </summary>
/// <remarks>
/// Although the earliest versions of OAuth are supported, for security reasons it may be desirable to require the
/// remote party to support a later version of OAuth.
/// </remarks>
[ConfigurationProperty(MinimumRequiredOAuthVersionConfigName, DefaultValue = "V10")]
public ProtocolVersion MinimumRequiredOAuthVersion {
get { return (ProtocolVersion)this[MinimumRequiredOAuthVersionConfigName]; }
set { this[MinimumRequiredOAuthVersionConfigName] = value; }
}
/// <summary>
/// Gets or sets the maximum time a user can take to complete authorization.
/// </summary>
/// <remarks>
/// This time limit serves as a security mitigation against brute force attacks to
/// compromise (unauthorized or authorized) request tokens.
/// Longer time limits is more friendly to slow users or consumers, while shorter
/// time limits provide better security.
/// </remarks>
[ConfigurationProperty(MaximumRequestTokenTimeToLiveConfigName, DefaultValue = "0:05")] // 5 minutes
[PositiveTimeSpanValidator]
public TimeSpan MaximumRequestTokenTimeToLive {
get { return (TimeSpan)this[MaximumRequestTokenTimeToLiveConfigName]; }
set { this[MaximumRequestTokenTimeToLiveConfigName] = value; }
}
/// <summary>
/// Initializes a programmatically manipulatable bag of these security settings with the settings from the config file.
/// </summary>
/// <returns>The newly created security settings object.</returns>
internal ServiceProviderSecuritySettings CreateSecuritySettings() {
return new ServiceProviderSecuritySettings {
MinimumRequiredOAuthVersion = this.MinimumRequiredOAuthVersion,
MaximumRequestTokenTimeToLive = this.MaximumRequestTokenTimeToLive,
};
}
}
}
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