Files
duplicati/Duplicati/Library/Backend/OAuthHelper/OAuthHttpMessageHandler.cs
T
Tyler Gill f93f9dcc5a Add new utility class, OAuthHttpClient.
This class extends HttpClient and uses an OAuthHttpMessageHandler under the covers to automatically authenticate requests.
Additionally, it automatically respects the global HttpContextSettings for overall timeout, read/write timeout, and SSL certificate validation.
(BufferRequests isn't currently handled, as HttpClient doesn't seem to easily expose that flag, and as of .NET 4.5, seems to not buffer by default.)
2018-03-23 15:07:51 -06:00

60 lines
2.4 KiB
C#

// Copyright (C) 2018, The Duplicati Team
// http://www.duplicati.com, info@duplicati.com
//
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 2.1 of the
// License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
using System.Net.Http;
using System.Net.Http.Headers;
using System.Threading;
using System.Threading.Tasks;
namespace Duplicati.Library
{
public class OAuthHttpMessageHandler : WebRequestHandler
{
/// <summary>
/// Requests which contain a property with this name (in 'request.Properties') will not have the authentication header automatically added.
/// </summary>
public const string DISABLE_AUTHENTICATION_PROPERTY = "OAuthHttpMessageHandler_DisableAuthentication";
private readonly OAuthHelper m_oauth;
public OAuthHttpMessageHandler(string authid, string protocolKey)
{
this.m_oauth = new OAuthHelper(authid, protocolKey);
}
/// <summary>
/// Prevents authentication from being applied on the given request
/// </summary>
/// <param name="request">Request to not authenticate</param>
/// <returns>Request to not authenticate</returns>
public HttpRequestMessage PreventAuthentication(HttpRequestMessage request)
{
request.Properties[DISABLE_AUTHENTICATION_PROPERTY] = true;
return request;
}
protected override Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
{
if (!request.Properties.ContainsKey(DISABLE_AUTHENTICATION_PROPERTY))
{
request.Headers.Authorization = new AuthenticationHeaderValue("Bearer", this.m_oauth.AccessToken);
}
return base.SendAsync(request, cancellationToken);
}
}
}