//
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// HttpListenerContext.cs
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// Copied from System.Net.HttpListenerContext
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//
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// Author:
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// Gonzalo Paniagua Javier (gonzalo@novell.com)
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//
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// Copyright (c) 2005 Novell, Inc. (http://www.novell.com)
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// Copyright (c) 2012 sta.blockhead (sta.blockhead@gmail.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.Collections.Specialized;
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using System.IO;
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using System.Net;
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using System.Security.Principal;
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using System.Text;
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namespace WebSocketSharp.Net {
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public sealed class HttpListenerContext {
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#region Private Fields
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HttpConnection cnc;
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string error;
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int err_status;
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HttpListenerRequest request;
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HttpListenerResponse response;
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IPrincipal user;
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#endregion
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#region Internal Fields
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internal HttpListener Listener;
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#endregion
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#region Constructor
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internal HttpListenerContext (HttpConnection cnc)
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{
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this.cnc = cnc;
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err_status = 400;
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request = new HttpListenerRequest (this);
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response = new HttpListenerResponse (this);
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}
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#endregion
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#region Internal Properties
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internal HttpConnection Connection {
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get { return cnc; }
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}
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internal string ErrorMessage {
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get { return error; }
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set { error = value; }
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}
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internal int ErrorStatus {
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get { return err_status; }
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set { err_status = value; }
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}
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internal bool HaveError {
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get { return (error != null); }
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}
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#endregion
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#region Public Properties
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public HttpListenerRequest Request {
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get { return request; }
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}
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public HttpListenerResponse Response {
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get { return response; }
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}
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public IPrincipal User {
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get { return user; }
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}
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#endregion
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#region Internal Methods
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internal void ParseAuthentication (AuthenticationSchemes expectedSchemes)
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{
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if (expectedSchemes == AuthenticationSchemes.Anonymous)
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return;
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// TODO: Handle NTLM/Digest modes
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string header = request.Headers ["Authorization"];
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if (header == null || header.Length < 2)
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return;
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string [] authenticationData = header.Split (new char [] {' '}, 2);
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if (string.Compare (authenticationData [0], "basic", true) == 0) {
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user = ParseBasicAuthentication (authenticationData [1]);
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}
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// TODO: throw if malformed -> 400 bad request
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}
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internal IPrincipal ParseBasicAuthentication (string authData)
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{
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try {
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// Basic AUTH Data is a formatted Base64 String
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//string domain = null;
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string user = null;
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string password = null;
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int pos = -1;
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string authString = Encoding.Default.GetString (Convert.FromBase64String (authData));
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// The format is DOMAIN\username:password
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// Domain is optional
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pos = authString.IndexOf (':');
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// parse the password off the end
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password = authString.Substring (pos+1);
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// discard the password
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authString = authString.Substring (0, pos);
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// check if there is a domain
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pos = authString.IndexOf ('\\');
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if (pos > 0) {
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//domain = authString.Substring (0, pos);
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user = authString.Substring (pos);
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} else {
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user = authString;
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}
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HttpListenerBasicIdentity identity = new HttpListenerBasicIdentity (user, password);
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// TODO: What are the roles MS sets
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return new GenericPrincipal (identity, new string [0]);
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} catch (Exception) {
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// Invalid auth data is swallowed silently
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return null;
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}
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}
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#endregion
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#region Public Method
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public HttpListenerWebSocketContext AcceptWebSocket ()
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{
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return new HttpListenerWebSocketContext (this);
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}
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#endregion
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}
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}
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