434 lines
14 KiB
C#
434 lines
14 KiB
C#
using System;
|
|
using System.Collections;
|
|
using System.Collections.Generic;
|
|
using System.IO;
|
|
using System.Net;
|
|
using System.Net.Sockets;
|
|
using System.Security.Cryptography.X509Certificates;
|
|
using System.Threading;
|
|
using MediaBrowser.Model.Cryptography;
|
|
using MediaBrowser.Model.IO;
|
|
using MediaBrowser.Model.Logging;
|
|
using MediaBrowser.Model.Net;
|
|
using MediaBrowser.Model.System;
|
|
using MediaBrowser.Model.Text;
|
|
using SocketHttpListener.Primitives;
|
|
using ProtocolType = MediaBrowser.Model.Net.ProtocolType;
|
|
using SocketType = MediaBrowser.Model.Net.SocketType;
|
|
|
|
namespace SocketHttpListener.Net
|
|
{
|
|
sealed class EndPointListener
|
|
{
|
|
HttpListener listener;
|
|
IPEndPoint endpoint;
|
|
Socket sock;
|
|
Dictionary<ListenerPrefix, HttpListener> prefixes; // Dictionary <ListenerPrefix, HttpListener>
|
|
List<ListenerPrefix> unhandled; // List<ListenerPrefix> unhandled; host = '*'
|
|
List<ListenerPrefix> all; // List<ListenerPrefix> all; host = '+'
|
|
X509Certificate cert;
|
|
bool secure;
|
|
Dictionary<HttpConnection, HttpConnection> unregistered;
|
|
private readonly ILogger _logger;
|
|
private bool _closed;
|
|
private bool _enableDualMode;
|
|
private readonly ICryptoProvider _cryptoProvider;
|
|
private readonly ISocketFactory _socketFactory;
|
|
private readonly ITextEncoding _textEncoding;
|
|
private readonly IMemoryStreamFactory _memoryStreamFactory;
|
|
private readonly IFileSystem _fileSystem;
|
|
private readonly IEnvironmentInfo _environment;
|
|
|
|
public EndPointListener(HttpListener listener, IPAddress addr, int port, bool secure, X509Certificate cert, ILogger logger, ICryptoProvider cryptoProvider, ISocketFactory socketFactory, IMemoryStreamFactory memoryStreamFactory, ITextEncoding textEncoding, IFileSystem fileSystem, IEnvironmentInfo environment)
|
|
{
|
|
this.listener = listener;
|
|
_logger = logger;
|
|
_cryptoProvider = cryptoProvider;
|
|
_socketFactory = socketFactory;
|
|
_memoryStreamFactory = memoryStreamFactory;
|
|
_textEncoding = textEncoding;
|
|
_fileSystem = fileSystem;
|
|
_environment = environment;
|
|
|
|
this.secure = secure;
|
|
this.cert = cert;
|
|
|
|
_enableDualMode = addr.Equals(IPAddress.IPv6Any);
|
|
endpoint = new IPEndPoint(addr, port);
|
|
|
|
prefixes = new Dictionary<ListenerPrefix, HttpListener>();
|
|
unregistered = new Dictionary<HttpConnection, HttpConnection>();
|
|
|
|
CreateSocket();
|
|
}
|
|
|
|
internal HttpListener Listener
|
|
{
|
|
get
|
|
{
|
|
return listener;
|
|
}
|
|
}
|
|
|
|
private void CreateSocket()
|
|
{
|
|
try
|
|
{
|
|
sock = CreateSocket(endpoint.Address.AddressFamily, _enableDualMode);
|
|
}
|
|
catch (SocketCreateException ex)
|
|
{
|
|
if (_enableDualMode && endpoint.Address.Equals(IPAddress.IPv6Any) &&
|
|
(string.Equals(ex.ErrorCode, "AddressFamilyNotSupported", StringComparison.OrdinalIgnoreCase) ||
|
|
// mono on bsd is throwing this
|
|
string.Equals(ex.ErrorCode, "ProtocolNotSupported", StringComparison.OrdinalIgnoreCase)))
|
|
{
|
|
endpoint = new IPEndPoint(IPAddress.Any, endpoint.Port);
|
|
_enableDualMode = false;
|
|
sock = CreateSocket(endpoint.Address.AddressFamily, _enableDualMode);
|
|
}
|
|
else
|
|
{
|
|
throw;
|
|
}
|
|
}
|
|
|
|
try
|
|
{
|
|
sock.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
|
|
}
|
|
catch (SocketException)
|
|
{
|
|
// This is not supported on all operating systems (qnap)
|
|
}
|
|
|
|
sock.Bind(endpoint);
|
|
|
|
// This is the number TcpListener uses.
|
|
sock.Listen(2147483647);
|
|
|
|
new SocketAcceptor(_logger, sock, ProcessAccept, () => _closed).StartAccept();
|
|
_closed = false;
|
|
}
|
|
|
|
private Socket CreateSocket(AddressFamily addressFamily, bool dualMode)
|
|
{
|
|
try
|
|
{
|
|
var socket = new Socket(addressFamily, System.Net.Sockets.SocketType.Stream, System.Net.Sockets.ProtocolType.Tcp);
|
|
|
|
if (dualMode)
|
|
{
|
|
socket.DualMode = true;
|
|
}
|
|
|
|
return socket;
|
|
}
|
|
catch (SocketException ex)
|
|
{
|
|
throw new SocketCreateException(ex.SocketErrorCode.ToString(), ex);
|
|
}
|
|
catch (ArgumentException ex)
|
|
{
|
|
if (dualMode)
|
|
{
|
|
// Mono for BSD incorrectly throws ArgumentException instead of SocketException
|
|
throw new SocketCreateException("AddressFamilyNotSupported", ex);
|
|
}
|
|
else
|
|
{
|
|
throw;
|
|
}
|
|
}
|
|
}
|
|
|
|
private async void ProcessAccept(Socket accepted)
|
|
{
|
|
try
|
|
{
|
|
var listener = this;
|
|
|
|
if (listener.secure && listener.cert == null)
|
|
{
|
|
accepted.Close();
|
|
return;
|
|
}
|
|
|
|
HttpConnection conn = await HttpConnection.Create(_logger, accepted, listener, listener.secure, listener.cert, _cryptoProvider, _memoryStreamFactory, _textEncoding, _fileSystem, _environment).ConfigureAwait(false);
|
|
|
|
//_logger.Debug("Adding unregistered connection to {0}. Id: {1}", accepted.RemoteEndPoint, connectionId);
|
|
lock (listener.unregistered)
|
|
{
|
|
listener.unregistered[conn] = conn;
|
|
}
|
|
conn.BeginReadRequest();
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
_logger.ErrorException("Error in ProcessAccept", ex);
|
|
}
|
|
}
|
|
|
|
internal void RemoveConnection(HttpConnection conn)
|
|
{
|
|
lock (unregistered)
|
|
{
|
|
unregistered.Remove(conn);
|
|
}
|
|
}
|
|
|
|
public bool BindContext(HttpListenerContext context)
|
|
{
|
|
HttpListenerRequest req = context.Request;
|
|
ListenerPrefix prefix;
|
|
HttpListener listener = SearchListener(req.Url, out prefix);
|
|
if (listener == null)
|
|
return false;
|
|
|
|
context.Connection.Prefix = prefix;
|
|
return true;
|
|
}
|
|
|
|
public void UnbindContext(HttpListenerContext context)
|
|
{
|
|
if (context == null || context.Request == null)
|
|
return;
|
|
|
|
listener.UnregisterContext(context);
|
|
}
|
|
|
|
HttpListener SearchListener(Uri uri, out ListenerPrefix prefix)
|
|
{
|
|
prefix = null;
|
|
if (uri == null)
|
|
return null;
|
|
|
|
string host = uri.Host;
|
|
int port = uri.Port;
|
|
string path = WebUtility.UrlDecode(uri.AbsolutePath);
|
|
string path_slash = path[path.Length - 1] == '/' ? path : path + "/";
|
|
|
|
HttpListener best_match = null;
|
|
int best_length = -1;
|
|
|
|
if (host != null && host != "")
|
|
{
|
|
var p_ro = prefixes;
|
|
foreach (ListenerPrefix p in p_ro.Keys)
|
|
{
|
|
string ppath = p.Path;
|
|
if (ppath.Length < best_length)
|
|
continue;
|
|
|
|
if (p.Host != host || p.Port != port)
|
|
continue;
|
|
|
|
if (path.StartsWith(ppath) || path_slash.StartsWith(ppath))
|
|
{
|
|
best_length = ppath.Length;
|
|
best_match = (HttpListener)p_ro[p];
|
|
prefix = p;
|
|
}
|
|
}
|
|
if (best_length != -1)
|
|
return best_match;
|
|
}
|
|
|
|
List<ListenerPrefix> list = unhandled;
|
|
best_match = MatchFromList(host, path, list, out prefix);
|
|
if (path != path_slash && best_match == null)
|
|
best_match = MatchFromList(host, path_slash, list, out prefix);
|
|
if (best_match != null)
|
|
return best_match;
|
|
|
|
list = all;
|
|
best_match = MatchFromList(host, path, list, out prefix);
|
|
if (path != path_slash && best_match == null)
|
|
best_match = MatchFromList(host, path_slash, list, out prefix);
|
|
if (best_match != null)
|
|
return best_match;
|
|
|
|
return null;
|
|
}
|
|
|
|
HttpListener MatchFromList(string host, string path, List<ListenerPrefix> list, out ListenerPrefix prefix)
|
|
{
|
|
prefix = null;
|
|
if (list == null)
|
|
return null;
|
|
|
|
HttpListener best_match = null;
|
|
int best_length = -1;
|
|
|
|
foreach (ListenerPrefix p in list)
|
|
{
|
|
string ppath = p.Path;
|
|
if (ppath.Length < best_length)
|
|
continue;
|
|
|
|
if (path.StartsWith(ppath))
|
|
{
|
|
best_length = ppath.Length;
|
|
best_match = p.Listener;
|
|
prefix = p;
|
|
}
|
|
}
|
|
|
|
return best_match;
|
|
}
|
|
|
|
void AddSpecial(List<ListenerPrefix> coll, ListenerPrefix prefix)
|
|
{
|
|
if (coll == null)
|
|
return;
|
|
|
|
foreach (ListenerPrefix p in coll)
|
|
{
|
|
if (p.Path == prefix.Path) //TODO: code
|
|
throw new HttpListenerException(400, "Prefix already in use.");
|
|
}
|
|
coll.Add(prefix);
|
|
}
|
|
|
|
bool RemoveSpecial(List<ListenerPrefix> coll, ListenerPrefix prefix)
|
|
{
|
|
if (coll == null)
|
|
return false;
|
|
|
|
int c = coll.Count;
|
|
for (int i = 0; i < c; i++)
|
|
{
|
|
ListenerPrefix p = (ListenerPrefix)coll[i];
|
|
if (p.Path == prefix.Path)
|
|
{
|
|
coll.RemoveAt(i);
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void CheckIfRemove()
|
|
{
|
|
if (prefixes.Count > 0)
|
|
return;
|
|
|
|
List<ListenerPrefix> list = unhandled;
|
|
if (list != null && list.Count > 0)
|
|
return;
|
|
|
|
list = all;
|
|
if (list != null && list.Count > 0)
|
|
return;
|
|
|
|
EndPointManager.RemoveEndPoint(this, endpoint);
|
|
}
|
|
|
|
public void Close()
|
|
{
|
|
_closed = true;
|
|
sock.Close();
|
|
lock (unregistered)
|
|
{
|
|
//
|
|
// Clone the list because RemoveConnection can be called from Close
|
|
//
|
|
var connections = new List<HttpConnection>(unregistered.Keys);
|
|
|
|
foreach (HttpConnection c in connections)
|
|
c.Close(true);
|
|
unregistered.Clear();
|
|
}
|
|
}
|
|
|
|
public void AddPrefix(ListenerPrefix prefix, HttpListener listener)
|
|
{
|
|
List<ListenerPrefix> current;
|
|
List<ListenerPrefix> future;
|
|
if (prefix.Host == "*")
|
|
{
|
|
do
|
|
{
|
|
current = unhandled;
|
|
future = (current != null) ? current.ToList() : new List<ListenerPrefix>();
|
|
prefix.Listener = listener;
|
|
AddSpecial(future, prefix);
|
|
} while (Interlocked.CompareExchange(ref unhandled, future, current) != current);
|
|
return;
|
|
}
|
|
|
|
if (prefix.Host == "+")
|
|
{
|
|
do
|
|
{
|
|
current = all;
|
|
future = (current != null) ? current.ToList() : new List<ListenerPrefix>();
|
|
prefix.Listener = listener;
|
|
AddSpecial(future, prefix);
|
|
} while (Interlocked.CompareExchange(ref all, future, current) != current);
|
|
return;
|
|
}
|
|
|
|
Dictionary<ListenerPrefix, HttpListener> prefs;
|
|
Dictionary<ListenerPrefix, HttpListener> p2;
|
|
do
|
|
{
|
|
prefs = prefixes;
|
|
if (prefs.ContainsKey(prefix))
|
|
{
|
|
HttpListener other = (HttpListener)prefs[prefix];
|
|
if (other != listener) // TODO: code.
|
|
throw new HttpListenerException(400, "There's another listener for " + prefix);
|
|
return;
|
|
}
|
|
p2 = new Dictionary<ListenerPrefix, HttpListener>(prefs);
|
|
p2[prefix] = listener;
|
|
} while (Interlocked.CompareExchange(ref prefixes, p2, prefs) != prefs);
|
|
}
|
|
|
|
public void RemovePrefix(ListenerPrefix prefix, HttpListener listener)
|
|
{
|
|
List<ListenerPrefix> current;
|
|
List<ListenerPrefix> future;
|
|
if (prefix.Host == "*")
|
|
{
|
|
do
|
|
{
|
|
current = unhandled;
|
|
future = (current != null) ? current.ToList() : new List<ListenerPrefix>();
|
|
if (!RemoveSpecial(future, prefix))
|
|
break; // Prefix not found
|
|
} while (Interlocked.CompareExchange(ref unhandled, future, current) != current);
|
|
CheckIfRemove();
|
|
return;
|
|
}
|
|
|
|
if (prefix.Host == "+")
|
|
{
|
|
do
|
|
{
|
|
current = all;
|
|
future = (current != null) ? current.ToList() : new List<ListenerPrefix>();
|
|
if (!RemoveSpecial(future, prefix))
|
|
break; // Prefix not found
|
|
} while (Interlocked.CompareExchange(ref all, future, current) != current);
|
|
CheckIfRemove();
|
|
return;
|
|
}
|
|
|
|
Dictionary<ListenerPrefix, HttpListener> prefs;
|
|
Dictionary<ListenerPrefix, HttpListener> p2;
|
|
do
|
|
{
|
|
prefs = prefixes;
|
|
if (!prefs.ContainsKey(prefix))
|
|
break;
|
|
|
|
p2 = new Dictionary<ListenerPrefix, HttpListener>(prefs);
|
|
p2.Remove(prefix);
|
|
} while (Interlocked.CompareExchange(ref prefixes, p2, prefs) != prefs);
|
|
CheckIfRemove();
|
|
}
|
|
}
|
|
}
|