1405 lines
41 KiB
C#
1405 lines
41 KiB
C#
// **********************************************************************************
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// CassiniDev - http://cassinidev.codeplex.com
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//
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// Copyright (c) 2010 Sky Sanders. All rights reserved.
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//
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// This source code is subject to terms and conditions of the Microsoft Public
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// License (Ms-PL). A copy of the license can be found in the license.txt file
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// included in this distribution.
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//
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// You must not remove this notice, or any other, from this software.
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//
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// **********************************************************************************
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#region
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using System;
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using System.Collections.Generic;
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using System.Globalization;
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using System.IO;
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using System.Linq;
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using System.Security;
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using System.Security.Permissions;
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using System.Text;
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using System.Web;
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using System.Web.Hosting;
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using Microsoft.Win32.SafeHandles;
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#endregion
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namespace CassiniDev
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{
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internal class Request : SimpleWorkerRequest
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{
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private const int MaxChunkLength = 64 * 1024;
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private const int MaxHeaderBytes = 32 * 1024;
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private static readonly char[] BadPathChars = new[] { '%', '>', '<', ':', '\\' };
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private static readonly string[] DefaultFileNames = new[] { "default.aspx", "default.htm", "default.html" };
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private static readonly char[] IntToHex = new[]
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{
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'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'
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};
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private static readonly string[] RestrictedDirs = new[]
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{
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"/bin",
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"/app_browsers",
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"/app_code",
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"/app_data",
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"/app_localresources",
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"/app_globalresources",
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"/app_webreferences"
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};
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private readonly IStackWalk _connectionPermission = new PermissionSet(PermissionState.Unrestricted);
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private readonly Host _host;
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private readonly Server _server;
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private string _allRawHeaders;
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private byte[] _body;
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private int _bodyLength;
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private Connection _connection;
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private int _contentLength;
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// security permission to Assert remoting calls to _connection
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private int _endHeadersOffset;
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private string _filePath;
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private byte[] _headerBytes;
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private List<ByteString> _headerByteStrings;
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private bool _headersSent;
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// parsed request data
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private bool _isClientScriptPath;
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private string[] _knownRequestHeaders;
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private string _path;
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private string _pathInfo;
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private string _pathTranslated;
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private string _protocol;
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private string _queryString;
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private byte[] _queryStringBytes;
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private List<byte[]> _responseBodyBytes;
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private StringBuilder _responseHeadersBuilder;
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private int _responseStatus;
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private bool _specialCaseStaticFileHeaders;
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private int _startHeadersOffset;
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private string[][] _unknownRequestHeaders;
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private string _url;
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private string _verb;
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public Request(Server server, Host host, Connection connection)
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: base(String.Empty, String.Empty, null)
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{
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_connectionPermission = new PermissionSet(PermissionState.Unrestricted);
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_server = server;
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_host = host;
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_connection = connection;
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}
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public override void CloseConnection()
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{
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_connectionPermission.Assert();
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_connection.Close();
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}
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public override void EndOfRequest()
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{
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Connection conn = _connection;
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if (conn != null)
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{
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_connection = null;
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_server.OnRequestEnd(conn);
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}
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}
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public override void FlushResponse(bool finalFlush)
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{
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if (_responseStatus == 404 && !_headersSent && finalFlush && _verb == "GET")
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{
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// attempt directory listing
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if (ProcessDirectoryListingRequest())
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{
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return;
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}
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}
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_connectionPermission.Assert();
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if (!_headersSent)
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{
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_connection.WriteHeaders(_responseStatus, _responseHeadersBuilder.ToString());
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_headersSent = true;
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}
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for (int i = 0; i < _responseBodyBytes.Count; i++)
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{
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byte[] bytes = _responseBodyBytes[i];
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_connection.WriteBody(bytes, 0, bytes.Length);
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}
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_responseBodyBytes = new List<byte[]>();
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if (finalFlush)
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{
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_connection.Close();
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}
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}
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public override string GetAppPath()
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{
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return _host.VirtualPath;
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}
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public override string GetAppPathTranslated()
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{
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return _host.PhysicalPath;
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}
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public override string GetFilePath()
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{
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return _filePath;
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}
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public override string GetFilePathTranslated()
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{
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return _pathTranslated;
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}
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public override string GetHttpVerbName()
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{
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return _verb;
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}
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public override string GetHttpVersion()
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{
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return _protocol;
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}
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public override string GetKnownRequestHeader(int index)
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{
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return _knownRequestHeaders[index];
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}
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public override string GetLocalAddress()
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{
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_connectionPermission.Assert();
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return _connection.LocalIP;
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}
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public override int GetLocalPort()
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{
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return _host.Port;
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}
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public override string GetPathInfo()
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{
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return _pathInfo;
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}
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public override byte[] GetPreloadedEntityBody()
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{
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return _body;
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}
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public override string GetQueryString()
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{
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return _queryString;
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}
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public override byte[] GetQueryStringRawBytes()
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{
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return _queryStringBytes;
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}
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public override string GetRawUrl()
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{
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return _url;
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}
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public override string GetRemoteAddress()
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{
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_connectionPermission.Assert();
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return _connection.RemoteIP;
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}
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public override int GetRemotePort()
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{
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return 0;
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}
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public override string GetServerName()
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{
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string localAddress = GetLocalAddress();
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if (localAddress.Equals("127.0.0.1"))
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{
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return "localhost";
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}
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return localAddress;
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}
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public override string GetServerVariable(string name)
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{
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string processUser = string.Empty;
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string str2 = name;
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if (str2 == null)
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{
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return processUser;
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}
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if (!(str2 == "ALL_RAW"))
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{
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if (str2 != "SERVER_PROTOCOL")
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{
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if (str2 == "LOGON_USER")
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{
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if (GetUserToken() != IntPtr.Zero)
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{
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processUser = _host.GetProcessUser();
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}
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return processUser;
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}
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if ((str2 == "AUTH_TYPE") && (GetUserToken() != IntPtr.Zero))
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{
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processUser = "NTLM";
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}
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return processUser;
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}
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}
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else
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{
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return _allRawHeaders;
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}
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return _protocol;
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}
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public override string GetUnknownRequestHeader(string name)
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{
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int n = _unknownRequestHeaders.Length;
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for (int i = 0; i < n; i++)
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{
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if (string.Compare(name, _unknownRequestHeaders[i][0], StringComparison.OrdinalIgnoreCase) == 0)
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{
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return _unknownRequestHeaders[i][1];
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}
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}
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return null;
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}
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public override string[][] GetUnknownRequestHeaders()
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{
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return _unknownRequestHeaders;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////
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// Implementation of HttpWorkerRequest
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public override string GetUriPath()
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{
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return _path;
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}
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public override IntPtr GetUserToken()
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{
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return _host.GetProcessToken();
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}
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public override bool HeadersSent()
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{
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return _headersSent;
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}
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public override bool IsClientConnected()
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{
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_connectionPermission.Assert();
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return _connection.Connected;
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}
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public override bool IsEntireEntityBodyIsPreloaded()
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{
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return (_contentLength == _bodyLength);
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}
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public override string MapPath(string path)
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{
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string mappedPath;
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bool isClientScriptPath;
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if (string.IsNullOrEmpty(path) || path.Equals("/"))
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{
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// asking for the site root
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mappedPath = _host.VirtualPath == "/" ? _host.PhysicalPath : Environment.SystemDirectory;
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}
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else if (_host.IsVirtualPathAppPath(path))
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{
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// application path
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mappedPath = _host.PhysicalPath;
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}
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else if (_host.IsVirtualPathInApp(path, out isClientScriptPath))
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{
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if (isClientScriptPath)
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{
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mappedPath = _host.PhysicalClientScriptPath +
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path.Substring(_host.NormalizedClientScriptPath.Length);
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}
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else
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{
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// inside app but not the app path itself
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mappedPath = _host.PhysicalPath + path.Substring(_host.NormalizedVirtualPath.Length);
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}
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}
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else
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{
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// outside of app -- make relative to app path
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if (path.StartsWith("/", StringComparison.Ordinal))
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{
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mappedPath = _host.PhysicalPath + path.Substring(1);
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}
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else
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{
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mappedPath = _host.PhysicalPath + path;
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}
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}
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mappedPath = mappedPath.Replace('/', '\\');
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if (mappedPath.EndsWith("\\", StringComparison.Ordinal) &&
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!mappedPath.EndsWith(":\\", StringComparison.Ordinal))
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{
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mappedPath = mappedPath.Substring(0, mappedPath.Length - 1);
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}
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return mappedPath;
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}
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[AspNetHostingPermission(SecurityAction.Assert, Level = AspNetHostingPermissionLevel.Medium)]
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public void Process()
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{
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// read the request
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if (!TryParseRequest())
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{
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return;
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}
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// 100 response to POST
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if (_verb == "POST" && _contentLength > 0 && _bodyLength < _contentLength)
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{
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_connection.Write100Continue();
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}
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if (!_host.RequireAuthentication || TryNtlmAuthenticate())
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{
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// special case for client script
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if (_isClientScriptPath)
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{
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_connection.WriteEntireResponseFromFile(
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_host.PhysicalClientScriptPath + _path.Substring(_host.NormalizedClientScriptPath.Length), false);
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return;
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}
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// deny access to code, bin, etc.
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if (IsRequestForRestrictedDirectory())
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{
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_connection.WriteErrorAndClose(403);
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return;
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}
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// special case for a request to a directory (ensure / at the end and process default documents)
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if (ProcessDirectoryRequest())
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{
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return;
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}
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PrepareResponse();
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// Hand the processing over to HttpRuntime
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HttpRuntime.ProcessRequest(this);
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}
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}
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public override int ReadEntityBody(byte[] buffer, int size)
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{
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int bytesRead = 0;
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_connectionPermission.Assert();
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byte[] bytes = _connection.ReadRequestBytes(size);
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if (bytes != null && bytes.Length > 0)
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{
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bytesRead = bytes.Length;
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Buffer.BlockCopy(bytes, 0, buffer, 0, bytesRead);
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}
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return bytesRead;
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}
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public override void SendCalculatedContentLength(int contentLength)
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{
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if (!_headersSent)
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{
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_responseHeadersBuilder.Append("Content-Length: ");
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_responseHeadersBuilder.Append(contentLength.ToString(CultureInfo.InvariantCulture));
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_responseHeadersBuilder.Append("\r\n");
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}
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}
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public override void SendKnownResponseHeader(int index, string value)
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{
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if (_headersSent)
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{
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return;
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}
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switch (index)
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{
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case HeaderServer:
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case HeaderDate:
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case HeaderConnection:
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// ignore these
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return;
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/* case HeaderContentType:
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if (value == "bytes")
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{
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// use this header to detect when we're processing a static file
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_specialCaseStaticFileHeaders = true;
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return;
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}
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break;
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case HeaderExpires:
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case HeaderLastModified:
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if (_specialCaseStaticFileHeaders)
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{
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// NOTE: Ignore these for static files. These are generated
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// by the StaticFileHandler, but they shouldn't be.
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//return;
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}
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break;*/
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// FIX: #12506
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case HeaderContentType:
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string contentType = null;
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if (value == "application/octet-stream")
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{
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// application/octet-stream is default for unknown so lets
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// take a shot at determining the type.
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// don't do this for other content-types as you are going to
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// end up sending text/plain for endpoints that are handled by
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// asp.net such as .aspx, .asmx, .axd, etc etc
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contentType = Common.GetContentType(_pathTranslated);
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}
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value = contentType ?? value;
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break;
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}
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_responseHeadersBuilder.Append(GetKnownResponseHeaderName(index));
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_responseHeadersBuilder.Append(": ");
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_responseHeadersBuilder.Append(value);
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_responseHeadersBuilder.Append("\r\n");
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}
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public override void SendResponseFromFile(string filename, long offset, long length)
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{
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if (length == 0)
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{
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return;
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}
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FileStream f = null;
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try
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{
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f = new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.Read);
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SendResponseFromFileStream(f, offset, length);
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}
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finally
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{
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if (f != null)
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{
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f.Close();
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}
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}
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}
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public override void SendResponseFromFile(IntPtr handle, long offset, long length)
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{
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if (length == 0)
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{
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return;
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}
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using (SafeFileHandle sfh = new SafeFileHandle(handle, false))
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{
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using (FileStream f = new FileStream(sfh, FileAccess.Read))
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{
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SendResponseFromFileStream(f, offset, length);
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}
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}
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}
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public override void SendResponseFromMemory(byte[] data, int length)
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{
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if (length > 0)
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{
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byte[] bytes = new byte[length];
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Buffer.BlockCopy(data, 0, bytes, 0, length);
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_responseBodyBytes.Add(bytes);
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}
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}
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public override void SendStatus(int statusCode, string statusDescription)
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{
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_responseStatus = statusCode;
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}
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public override void SendUnknownResponseHeader(string name, string value)
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{
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if (_headersSent)
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return;
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_responseHeadersBuilder.Append(name);
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_responseHeadersBuilder.Append(": ");
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_responseHeadersBuilder.Append(value);
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_responseHeadersBuilder.Append("\r\n");
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}
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private bool IsBadPath()
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{
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if (_path.IndexOfAny(BadPathChars) >= 0)
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{
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return true;
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}
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if (CultureInfo.InvariantCulture.CompareInfo.IndexOf(_path, "..", CompareOptions.Ordinal) >= 0)
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{
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return true;
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}
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if (CultureInfo.InvariantCulture.CompareInfo.IndexOf(_path, "//", CompareOptions.Ordinal) >= 0)
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{
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return true;
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}
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return false;
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}
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private bool IsRequestForRestrictedDirectory()
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{
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String p = CultureInfo.InvariantCulture.TextInfo.ToLower(_path);
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if (_host.VirtualPath != "/")
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{
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p = p.Substring(_host.VirtualPath.Length);
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}
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|
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foreach (String dir in RestrictedDirs)
|
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{
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if (p.StartsWith(dir, StringComparison.Ordinal))
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{
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if (p.Length == dir.Length || p[dir.Length] == '/')
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{
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return true;
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}
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}
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}
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return false;
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}
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|
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private void ParseHeaders()
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{
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_knownRequestHeaders = new string[RequestHeaderMaximum];
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|
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// construct unknown headers as array list of name1,value1,...
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List<string> headers = new List<string>();
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|
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for (int i = 1; i < _headerByteStrings.Count; i++)
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{
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string s = _headerByteStrings[i].GetString();
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|
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int c = s.IndexOf(':');
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|
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if (c >= 0)
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{
|
|
string name = s.Substring(0, c).Trim();
|
|
string value = s.Substring(c + 1).Trim();
|
|
|
|
// remember
|
|
int knownIndex = GetKnownRequestHeaderIndex(name);
|
|
if (knownIndex >= 0)
|
|
{
|
|
_knownRequestHeaders[knownIndex] = value;
|
|
}
|
|
else
|
|
{
|
|
headers.Add(name);
|
|
headers.Add(value);
|
|
}
|
|
}
|
|
}
|
|
|
|
// copy to array unknown headers
|
|
|
|
int n = headers.Count / 2;
|
|
_unknownRequestHeaders = new string[n][];
|
|
int j = 0;
|
|
|
|
for (int i = 0; i < n; i++)
|
|
{
|
|
_unknownRequestHeaders[i] = new string[2];
|
|
_unknownRequestHeaders[i][0] = headers[j++];
|
|
_unknownRequestHeaders[i][1] = headers[j++];
|
|
}
|
|
|
|
// remember all raw headers as one string
|
|
|
|
if (_headerByteStrings.Count > 1)
|
|
{
|
|
_allRawHeaders = Encoding.UTF8.GetString(_headerBytes, _startHeadersOffset,
|
|
_endHeadersOffset - _startHeadersOffset);
|
|
}
|
|
else
|
|
{
|
|
_allRawHeaders = String.Empty;
|
|
}
|
|
}
|
|
|
|
private void ParsePostedContent()
|
|
{
|
|
_contentLength = 0;
|
|
_bodyLength = 0;
|
|
|
|
string contentLengthValue = _knownRequestHeaders[HeaderContentLength];
|
|
if (contentLengthValue != null)
|
|
{
|
|
try
|
|
{
|
|
_contentLength = Int32.Parse(contentLengthValue, CultureInfo.InvariantCulture);
|
|
}
|
|
// ReSharper disable EmptyGeneralCatchClause
|
|
catch
|
|
// ReSharper restore EmptyGeneralCatchClause
|
|
{
|
|
}
|
|
}
|
|
|
|
if (_headerBytes.Length > _endHeadersOffset)
|
|
{
|
|
_bodyLength = _headerBytes.Length - _endHeadersOffset;
|
|
|
|
if (_bodyLength > _contentLength)
|
|
{
|
|
_bodyLength = _contentLength; // don't read more than the content-length
|
|
}
|
|
|
|
if (_bodyLength > 0)
|
|
{
|
|
_body = new byte[_bodyLength];
|
|
Buffer.BlockCopy(_headerBytes, _endHeadersOffset, _body, 0, _bodyLength);
|
|
_connection.LogRequestBody(_body);
|
|
}
|
|
}
|
|
}
|
|
|
|
private void ParseRequestLine()
|
|
{
|
|
ByteString requestLine = _headerByteStrings[0];
|
|
ByteString[] elems = requestLine.Split(' ');
|
|
|
|
if (elems == null || elems.Length < 2 || elems.Length > 3)
|
|
{
|
|
_connection.WriteErrorAndClose(400);
|
|
return;
|
|
}
|
|
|
|
_verb = elems[0].GetString();
|
|
|
|
ByteString urlBytes = elems[1];
|
|
_url = urlBytes.GetString();
|
|
|
|
_protocol = elems.Length == 3 ? elems[2].GetString() : "HTTP/1.0";
|
|
|
|
// query string
|
|
|
|
int iqs = urlBytes.IndexOf('?');
|
|
_queryStringBytes = iqs > 0 ? urlBytes.Substring(iqs + 1).GetBytes() : new byte[0];
|
|
|
|
iqs = _url.IndexOf('?');
|
|
if (iqs > 0)
|
|
{
|
|
_path = _url.Substring(0, iqs);
|
|
_queryString = _url.Substring(iqs + 1);
|
|
}
|
|
else
|
|
{
|
|
_path = _url;
|
|
_queryStringBytes = new byte[0];
|
|
}
|
|
|
|
// url-decode path
|
|
|
|
if (_path.IndexOf('%') >= 0)
|
|
{
|
|
_path = HttpUtility.UrlDecode(_path, Encoding.UTF8);
|
|
|
|
iqs = _url.IndexOf('?');
|
|
if (iqs >= 0)
|
|
{
|
|
_url = _path + _url.Substring(iqs);
|
|
}
|
|
else
|
|
{
|
|
_url = _path;
|
|
}
|
|
}
|
|
|
|
// path info
|
|
|
|
int lastDot = _path.LastIndexOf('.');
|
|
int lastSlh = _path.LastIndexOf('/');
|
|
|
|
if (lastDot >= 0 && lastSlh >= 0 && lastDot < lastSlh)
|
|
{
|
|
int ipi = _path.IndexOf('/', lastDot);
|
|
_filePath = _path.Substring(0, ipi);
|
|
_pathInfo = _path.Substring(ipi);
|
|
}
|
|
else
|
|
{
|
|
_filePath = _path;
|
|
_pathInfo = String.Empty;
|
|
}
|
|
|
|
_pathTranslated = MapPath(_filePath);
|
|
|
|
_connection.LogRequest(_pathTranslated, _url);
|
|
}
|
|
|
|
private void PrepareResponse()
|
|
{
|
|
_headersSent = false;
|
|
_responseStatus = 200;
|
|
_responseHeadersBuilder = new StringBuilder();
|
|
_responseBodyBytes = new List<byte[]>();
|
|
}
|
|
|
|
private bool ProcessDirectoryListingRequest()
|
|
{
|
|
if (_verb != "GET")
|
|
{
|
|
return false;
|
|
}
|
|
|
|
String dirPathTranslated = _pathTranslated;
|
|
|
|
if (_pathInfo.Length > 0)
|
|
{
|
|
// directory path can never have pathInfo
|
|
dirPathTranslated = MapPath(_path);
|
|
}
|
|
|
|
if (!Directory.Exists(dirPathTranslated))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
// get all files and subdirs
|
|
FileSystemInfo[] infos = null;
|
|
try
|
|
{
|
|
infos = (new DirectoryInfo(dirPathTranslated)).GetFileSystemInfos();
|
|
}
|
|
// ReSharper disable EmptyGeneralCatchClause
|
|
catch
|
|
// ReSharper restore EmptyGeneralCatchClause
|
|
{
|
|
}
|
|
|
|
// determine if parent is appropriate
|
|
string parentPath = null;
|
|
|
|
if (_path.Length > 1)
|
|
{
|
|
int i = _path.LastIndexOf('/', _path.Length - 2);
|
|
|
|
parentPath = (i > 0) ? _path.Substring(0, i) : "/";
|
|
if (!_host.IsVirtualPathInApp(parentPath))
|
|
{
|
|
parentPath = null;
|
|
}
|
|
}
|
|
|
|
_connection.WriteEntireResponseFromString(200, "Content-type: text/html; charset=utf-8\r\n",
|
|
Messages.FormatDirectoryListing(_path, parentPath, infos),
|
|
false);
|
|
return true;
|
|
}
|
|
|
|
private bool ProcessDirectoryRequest()
|
|
{
|
|
String dirPathTranslated = _pathTranslated;
|
|
|
|
if (_pathInfo.Length > 0)
|
|
{
|
|
// directory path can never have pathInfo
|
|
dirPathTranslated = MapPath(_path);
|
|
}
|
|
|
|
if (!Directory.Exists(dirPathTranslated))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
// have to redirect /foo to /foo/ to allow relative links to work
|
|
if (!_path.EndsWith("/", StringComparison.Ordinal))
|
|
{
|
|
string newPath = _path + "/";
|
|
string location = "Location: " + UrlEncodeRedirect(newPath) + "\r\n";
|
|
string body = "<html><head><title>Object moved</title></head><body>\r\n" +
|
|
"<h2>Object moved to <a href='" + newPath + "'>here</a>.</h2>\r\n" +
|
|
"</body></html>\r\n";
|
|
|
|
_connection.WriteEntireResponseFromString(302, location, body, false);
|
|
return true;
|
|
}
|
|
|
|
// check for the default file
|
|
foreach (string filename in DefaultFileNames)
|
|
{
|
|
string defaultFilePath = dirPathTranslated + "\\" + filename;
|
|
|
|
if (File.Exists(defaultFilePath))
|
|
{
|
|
// pretend the request is for the default file path
|
|
_path += filename;
|
|
_filePath = _path;
|
|
_url = (_queryString != null) ? (_path + "?" + _queryString) : _path;
|
|
_pathTranslated = defaultFilePath;
|
|
return false; // go through normal processing
|
|
}
|
|
}
|
|
|
|
return false; // go through normal processing
|
|
}
|
|
|
|
private void ReadAllHeaders()
|
|
{
|
|
_headerBytes = null;
|
|
|
|
do
|
|
{
|
|
if (!TryReadAllHeaders())
|
|
{
|
|
// something bad happened
|
|
break;
|
|
}
|
|
} while (_endHeadersOffset < 0); // found \r\n\r\n
|
|
|
|
//
|
|
// fixed: Item # 13290
|
|
if (_headerByteStrings != null && _headerByteStrings.Count > 0)
|
|
{
|
|
_connection.LogRequestHeaders(string.Join(Environment.NewLine, _headerByteStrings.Select(b => b.GetString()).ToArray()));
|
|
}
|
|
|
|
}
|
|
|
|
private void Reset()
|
|
{
|
|
_headerBytes = null;
|
|
_startHeadersOffset = 0;
|
|
_endHeadersOffset = 0;
|
|
_headerByteStrings = null;
|
|
|
|
_isClientScriptPath = false;
|
|
|
|
_verb = null;
|
|
_url = null;
|
|
_protocol = null;
|
|
|
|
_path = null;
|
|
_filePath = null;
|
|
_pathInfo = null;
|
|
_pathTranslated = null;
|
|
_queryString = null;
|
|
_queryStringBytes = null;
|
|
|
|
_contentLength = 0;
|
|
_bodyLength = 0;
|
|
_body = null;
|
|
|
|
_allRawHeaders = null;
|
|
_unknownRequestHeaders = null;
|
|
_knownRequestHeaders = null;
|
|
//_specialCaseStaticFileHeaders = false;
|
|
}
|
|
|
|
private void SendResponseFromFileStream(Stream f, long offset, long length)
|
|
{
|
|
long fileSize = f.Length;
|
|
|
|
if (length == -1)
|
|
{
|
|
length = fileSize - offset;
|
|
}
|
|
|
|
if (length == 0 || offset < 0 || length > fileSize - offset)
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (offset > 0)
|
|
{
|
|
f.Seek(offset, SeekOrigin.Begin);
|
|
}
|
|
|
|
if (length <= MaxChunkLength)
|
|
{
|
|
byte[] fileBytes = new byte[(int)length];
|
|
int bytesRead = f.Read(fileBytes, 0, (int)length);
|
|
SendResponseFromMemory(fileBytes, bytesRead);
|
|
}
|
|
else
|
|
{
|
|
byte[] chunk = new byte[MaxChunkLength];
|
|
int bytesRemaining = (int)length;
|
|
|
|
while (bytesRemaining > 0)
|
|
{
|
|
int bytesToRead = (bytesRemaining < MaxChunkLength) ? bytesRemaining : MaxChunkLength;
|
|
int bytesRead = f.Read(chunk, 0, bytesToRead);
|
|
|
|
SendResponseFromMemory(chunk, bytesRead);
|
|
bytesRemaining -= bytesRead;
|
|
|
|
// flush to release keep memory
|
|
if ((bytesRemaining > 0) && (bytesRead > 0))
|
|
{
|
|
FlushResponse(false);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
private void SkipAllPostedContent()
|
|
{
|
|
if ((_contentLength > 0) && (_bodyLength < _contentLength))
|
|
{
|
|
byte[] buffer;
|
|
for (int i = _contentLength - _bodyLength; i > 0; i -= buffer.Length)
|
|
{
|
|
buffer = _connection.ReadRequestBytes(i);
|
|
if ((buffer == null) || (buffer.Length == 0))
|
|
{
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
[SecurityPermission(SecurityAction.Assert, UnmanagedCode = true),
|
|
SecurityPermission(SecurityAction.Assert, ControlPrincipal = true)]
|
|
private bool TryNtlmAuthenticate()
|
|
{
|
|
try
|
|
{
|
|
using (NtlmAuth auth = new NtlmAuth())
|
|
{
|
|
do
|
|
{
|
|
string blobString = null;
|
|
string extraHeaders = _knownRequestHeaders[0x18];
|
|
if ((extraHeaders != null) && extraHeaders.StartsWith("NTLM ", StringComparison.Ordinal))
|
|
{
|
|
blobString = extraHeaders.Substring(5);
|
|
}
|
|
if (blobString != null)
|
|
{
|
|
if (!auth.Authenticate(blobString))
|
|
{
|
|
_connection.WriteErrorAndClose(0x193);
|
|
return false;
|
|
}
|
|
if (auth.Completed)
|
|
{
|
|
goto Label_009A;
|
|
}
|
|
extraHeaders = "WWW-Authenticate: NTLM " + auth.Blob + "\r\n";
|
|
}
|
|
else
|
|
{
|
|
extraHeaders = "WWW-Authenticate: NTLM\r\n";
|
|
}
|
|
SkipAllPostedContent();
|
|
_connection.WriteErrorWithExtraHeadersAndKeepAlive(0x191, extraHeaders);
|
|
} while (TryParseRequest());
|
|
return false;
|
|
Label_009A:
|
|
if (_host.GetProcessSid() != auth.SID)
|
|
{
|
|
_connection.WriteErrorAndClose(0x193);
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
catch
|
|
{
|
|
try
|
|
{
|
|
_connection.WriteErrorAndClose(500);
|
|
}
|
|
// ReSharper disable EmptyGeneralCatchClause
|
|
catch
|
|
// ReSharper restore EmptyGeneralCatchClause
|
|
{
|
|
}
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/// <summary>
|
|
/// TODO: defer response until request is written
|
|
/// </summary>
|
|
/// <returns></returns>
|
|
private bool TryParseRequest()
|
|
{
|
|
Reset();
|
|
|
|
ReadAllHeaders();
|
|
|
|
if (_headerBytes == null || _endHeadersOffset < 0 ||
|
|
_headerByteStrings == null || _headerByteStrings.Count == 0)
|
|
{
|
|
_connection.WriteErrorAndClose(400);
|
|
return false;
|
|
}
|
|
|
|
ParseRequestLine();
|
|
|
|
// Check for bad path
|
|
if (IsBadPath())
|
|
{
|
|
_connection.WriteErrorAndClose(400);
|
|
return false;
|
|
}
|
|
|
|
// Check if the path is not well formed or is not for the current app
|
|
if (!_host.IsVirtualPathInApp(_path, out _isClientScriptPath))
|
|
{
|
|
_connection.WriteErrorAndClose(404);
|
|
return false;
|
|
}
|
|
|
|
ParseHeaders();
|
|
|
|
ParsePostedContent();
|
|
|
|
return true;
|
|
}
|
|
|
|
private bool TryReadAllHeaders()
|
|
{
|
|
// read the first packet (up to 32K)
|
|
byte[] headerBytes = _connection.ReadRequestBytes(MaxHeaderBytes);
|
|
|
|
if (headerBytes == null || headerBytes.Length == 0)
|
|
return false;
|
|
|
|
if (_headerBytes != null)
|
|
{
|
|
// previous partial read
|
|
int len = headerBytes.Length + _headerBytes.Length;
|
|
if (len > MaxHeaderBytes)
|
|
return false;
|
|
|
|
byte[] bytes = new byte[len];
|
|
Buffer.BlockCopy(_headerBytes, 0, bytes, 0, _headerBytes.Length);
|
|
Buffer.BlockCopy(headerBytes, 0, bytes, _headerBytes.Length, headerBytes.Length);
|
|
_headerBytes = bytes;
|
|
}
|
|
else
|
|
{
|
|
_headerBytes = headerBytes;
|
|
}
|
|
|
|
// start parsing
|
|
_startHeadersOffset = -1;
|
|
_endHeadersOffset = -1;
|
|
_headerByteStrings = new List<ByteString>();
|
|
|
|
// find the end of headers
|
|
ByteParser parser = new ByteParser(_headerBytes);
|
|
|
|
for (; ; )
|
|
{
|
|
ByteString line = parser.ReadLine();
|
|
|
|
if (line == null)
|
|
{
|
|
break;
|
|
}
|
|
|
|
if (_startHeadersOffset < 0)
|
|
{
|
|
_startHeadersOffset = parser.CurrentOffset;
|
|
}
|
|
|
|
if (line.IsEmpty)
|
|
{
|
|
_endHeadersOffset = parser.CurrentOffset;
|
|
break;
|
|
}
|
|
|
|
_headerByteStrings.Add(line);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
private static string UrlEncodeRedirect(string path)
|
|
{
|
|
// this method mimics the logic in HttpResponse.Redirect (which relies on internal methods)
|
|
|
|
// count non-ascii characters
|
|
byte[] bytes = Encoding.UTF8.GetBytes(path);
|
|
int count = bytes.Length;
|
|
int countNonAscii = 0;
|
|
for (int i = 0; i < count; i++)
|
|
{
|
|
if ((bytes[i] & 0x80) != 0)
|
|
{
|
|
countNonAscii++;
|
|
}
|
|
}
|
|
|
|
// encode all non-ascii characters using UTF-8 %XX
|
|
if (countNonAscii > 0)
|
|
{
|
|
// expand not 'safe' characters into %XX, spaces to +s
|
|
byte[] expandedBytes = new byte[count + countNonAscii * 2];
|
|
int pos = 0;
|
|
for (int i = 0; i < count; i++)
|
|
{
|
|
byte b = bytes[i];
|
|
|
|
if ((b & 0x80) == 0)
|
|
{
|
|
expandedBytes[pos++] = b;
|
|
}
|
|
else
|
|
{
|
|
expandedBytes[pos++] = (byte)'%';
|
|
expandedBytes[pos++] = (byte)IntToHex[(b >> 4) & 0xf];
|
|
expandedBytes[pos++] = (byte)IntToHex[b & 0xf];
|
|
}
|
|
}
|
|
|
|
path = Encoding.ASCII.GetString(expandedBytes);
|
|
}
|
|
|
|
// encode spaces into %20
|
|
if (path.IndexOf(' ') >= 0)
|
|
{
|
|
path = path.Replace(" ", "%20");
|
|
}
|
|
|
|
return path;
|
|
}
|
|
|
|
#region Nested type: ByteParser
|
|
|
|
internal class ByteParser
|
|
{
|
|
private readonly byte[] _bytes;
|
|
|
|
private int _pos;
|
|
|
|
public ByteParser(byte[] bytes)
|
|
{
|
|
_bytes = bytes;
|
|
_pos = 0;
|
|
}
|
|
|
|
public int CurrentOffset
|
|
{
|
|
get { return _pos; }
|
|
}
|
|
|
|
public ByteString ReadLine()
|
|
{
|
|
ByteString line = null;
|
|
|
|
for (int i = _pos; i < _bytes.Length; i++)
|
|
{
|
|
if (_bytes[i] == (byte)'\n')
|
|
{
|
|
int len = i - _pos;
|
|
if (len > 0 && _bytes[i - 1] == (byte)'\r')
|
|
{
|
|
len--;
|
|
}
|
|
|
|
line = new ByteString(_bytes, _pos, len);
|
|
_pos = i + 1;
|
|
return line;
|
|
}
|
|
}
|
|
|
|
if (_pos < _bytes.Length)
|
|
{
|
|
line = new ByteString(_bytes, _pos, _bytes.Length - _pos);
|
|
}
|
|
|
|
_pos = _bytes.Length;
|
|
return line;
|
|
}
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region Nested type: ByteString
|
|
|
|
internal class ByteString
|
|
{
|
|
private readonly byte[] _bytes;
|
|
|
|
private readonly int _length;
|
|
|
|
private readonly int _offset;
|
|
|
|
public ByteString(byte[] bytes, int offset, int length)
|
|
{
|
|
_bytes = bytes;
|
|
_offset = offset;
|
|
_length = length;
|
|
}
|
|
|
|
public byte[] Bytes
|
|
{
|
|
get { return _bytes; }
|
|
}
|
|
|
|
public bool IsEmpty
|
|
{
|
|
get { return (_bytes == null || _length == 0); }
|
|
}
|
|
|
|
public byte this[int index]
|
|
{
|
|
get { return _bytes[_offset + index]; }
|
|
}
|
|
|
|
public int Length
|
|
{
|
|
get { return _length; }
|
|
}
|
|
|
|
public int Offset
|
|
{
|
|
get { return _offset; }
|
|
}
|
|
|
|
public byte[] GetBytes()
|
|
{
|
|
byte[] bytes = new byte[_length];
|
|
if (_length > 0) Buffer.BlockCopy(_bytes, _offset, bytes, 0, _length);
|
|
return bytes;
|
|
}
|
|
|
|
public string GetString(Encoding enc)
|
|
{
|
|
if (IsEmpty) return string.Empty;
|
|
return enc.GetString(_bytes, _offset, _length);
|
|
}
|
|
|
|
public string GetString()
|
|
{
|
|
return GetString(Encoding.UTF8);
|
|
}
|
|
|
|
public int IndexOf(char ch)
|
|
{
|
|
return IndexOf(ch, 0);
|
|
}
|
|
|
|
public int IndexOf(char ch, int offset)
|
|
{
|
|
for (int i = offset; i < _length; i++)
|
|
{
|
|
if (this[i] == (byte)ch) return i;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
public ByteString[] Split(char sep)
|
|
{
|
|
List<ByteString> list = new List<ByteString>();
|
|
|
|
int pos = 0;
|
|
while (pos < _length)
|
|
{
|
|
int i = IndexOf(sep, pos);
|
|
if (i < 0)
|
|
{
|
|
break;
|
|
}
|
|
|
|
list.Add(Substring(pos, i - pos));
|
|
pos = i + 1;
|
|
|
|
while (this[pos] == (byte)sep && pos < _length)
|
|
{
|
|
pos++;
|
|
}
|
|
}
|
|
|
|
if (pos < _length)
|
|
list.Add(Substring(pos));
|
|
|
|
return list.ToArray();
|
|
}
|
|
|
|
public ByteString Substring(int offset, int len)
|
|
{
|
|
return new ByteString(_bytes, _offset + offset, len);
|
|
}
|
|
|
|
public ByteString Substring(int offset)
|
|
{
|
|
return Substring(offset, _length - offset);
|
|
}
|
|
}
|
|
|
|
#endregion
|
|
}
|
|
} |