mirror of
https://github.com/ShareX/ShareX.git
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138 lines
No EOL
4.3 KiB
C#
138 lines
No EOL
4.3 KiB
C#
#region License Information (GPL v3)
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/*
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ShareX - A program that allows you to take screenshots and share any file type
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Copyright (c) 2007-2024 ShareX Team
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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Optionally you can also view the license at <http://www.gnu.org/licenses/>.
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*/
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#endregion License Information (GPL v3)
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using ShareX.HelpersLib;
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using ShareX.UploadersLib.Properties;
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using System;
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using System.IO;
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using System.Net;
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using System.Text;
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using System.Threading.Tasks;
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namespace ShareX.UploadersLib
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{
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public class OAuthListener : IDisposable
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{
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public IOAuth2Loopback OAuth { get; private set; }
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private HttpListener listener;
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public OAuthListener(IOAuth2Loopback oauth)
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{
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OAuth = oauth;
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}
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public void Dispose()
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{
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if (listener != null)
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{
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listener.Close();
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listener = null;
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}
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}
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public async Task<bool> ConnectAsync()
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{
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Dispose();
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IPAddress ip = IPAddress.Loopback;
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int port = WebHelpers.GetRandomUnusedPort();
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string redirectURI = string.Format($"http://{ip}:{port}/");
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string state = Helpers.GetRandomAlphanumeric(32);
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OAuth.RedirectURI = redirectURI;
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OAuth.State = state;
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string url = OAuth.GetAuthorizationURL();
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if (!string.IsNullOrEmpty(url))
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{
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URLHelpers.OpenURL(url);
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DebugHelper.WriteLine("Authorization URL is opened: " + url);
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}
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else
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{
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DebugHelper.WriteLine("Authorization URL is empty.");
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return false;
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}
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string queryCode = null;
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string queryState = null;
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try
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{
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listener = new HttpListener();
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listener.Prefixes.Add(redirectURI);
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listener.Start();
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HttpListenerContext context = await listener.GetContextAsync();
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queryCode = context.Request.QueryString.Get("code");
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queryState = context.Request.QueryString.Get("state");
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using (HttpListenerResponse response = context.Response)
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{
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string status;
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if (queryState != state)
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{
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status = "Invalid state parameter.";
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}
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else if (!string.IsNullOrEmpty(queryCode))
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{
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status = "Authorization completed successfully.";
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}
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else
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{
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status = "Authorization did not succeed.";
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}
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string responseText = Resources.OAuthCallbackPage.Replace("{0}", status);
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byte[] buffer = Encoding.UTF8.GetBytes(responseText);
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response.ContentLength64 = buffer.Length;
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response.KeepAlive = false;
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using (Stream responseOutput = response.OutputStream)
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{
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await responseOutput.WriteAsync(buffer, 0, buffer.Length);
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await responseOutput.FlushAsync();
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}
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}
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}
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catch (ObjectDisposedException)
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{
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}
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finally
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{
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Dispose();
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}
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if (queryState == state && !string.IsNullOrEmpty(queryCode))
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{
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return await Task.Run(() => OAuth.GetAccessToken(queryCode));
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}
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return false;
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}
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}
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} |