// System.Net.HttpConnection
//
// Author:
-// Gonzalo Paniagua Javier (gonzalo@novell.com)
+// Gonzalo Paniagua Javier (gonzalo.mono@gmail.com)
//
-// Copyright (c) 2005 Novell, Inc. (http://www.novell.com)
+// Copyright (c) 2005-2009 Novell, Inc. (http://www.novell.com)
+// Copyright (c) 2012 Xamarin, Inc. (http://xamarin.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
-#if NET_2_0
+
+#if SECURITY_DEP
+
+extern alias MonoSecurity;
+
using System.IO;
using System.Net.Sockets;
+using System.Reflection;
using System.Text;
+using System.Threading;
+using System.Security.Cryptography;
+using System.Security.Cryptography.X509Certificates;
+using MonoSecurity::Mono.Security.Protocol.Tls;
+
namespace System.Net {
sealed class HttpConnection
{
+ static AsyncCallback onread_cb = new AsyncCallback (OnRead);
const int BufferSize = 8192;
Socket sock;
- NetworkStream stream;
+ Stream stream;
EndPointListener epl;
MemoryStream ms;
byte [] buffer;
HttpListenerContext context;
- bool secure;
StringBuilder current_line;
ListenerPrefix prefix;
RequestStream i_stream;
ResponseStream o_stream;
bool chunked;
- int chunked_uses;
+ int reuses;
bool context_bound;
-
- public HttpConnection (Socket sock, EndPointListener epl, bool secure)
+ bool secure;
+ AsymmetricAlgorithm key;
+ int s_timeout = 90000; // 90k ms for first request, 15k ms from then on
+ Timer timer;
+ IPEndPoint local_ep;
+ HttpListener last_listener;
+ int [] client_cert_errors;
+ X509Certificate2 client_cert;
+
+ public HttpConnection (Socket sock, EndPointListener epl, bool secure, X509Certificate2 cert, AsymmetricAlgorithm key)
{
this.sock = sock;
- stream = new NetworkStream (sock, false);
this.epl = epl;
this.secure = secure;
+ this.key = key;
+ if (secure == false) {
+ stream = new NetworkStream (sock, false);
+ } else {
+ SslServerStream ssl_stream = new SslServerStream (new NetworkStream (sock, false), cert, false, true, false);
+ ssl_stream.PrivateKeyCertSelectionDelegate += OnPVKSelection;
+ ssl_stream.ClientCertValidationDelegate += OnClientCertificateValidation;
+ stream = ssl_stream;
+ }
+ timer = new Timer (OnTimeout, null, Timeout.Infinite, Timeout.Infinite);
Init ();
}
+ internal int [] ClientCertificateErrors {
+ get { return client_cert_errors; }
+ }
+
+ internal X509Certificate2 ClientCertificate {
+ get { return client_cert; }
+ }
+
+ bool OnClientCertificateValidation (X509Certificate certificate, int[] errors)
+ {
+ if (certificate == null)
+ return true;
+ X509Certificate2 cert = certificate as X509Certificate2;
+ if (cert == null)
+ cert = new X509Certificate2 (certificate.GetRawCertData ());
+ client_cert = cert;
+ client_cert_errors = errors;
+ return true;
+ }
+
+ AsymmetricAlgorithm OnPVKSelection (X509Certificate certificate, string targetHost)
+ {
+ return key;
+ }
+
void Init ()
{
context_bound = false;
context = new HttpListenerContext (this);
}
- public int ChunkedUses {
- get { return chunked_uses; }
+ public bool IsClosed {
+ get { return (sock == null); }
+ }
+
+ public int Reuses {
+ get { return reuses; }
}
public IPEndPoint LocalEndPoint {
- get { return (IPEndPoint) sock.LocalEndPoint; }
+ get {
+ if (local_ep != null)
+ return local_ep;
+
+ local_ep = (IPEndPoint) sock.LocalEndPoint;
+ return local_ep;
+ }
}
public IPEndPoint RemoteEndPoint {
set { prefix = value; }
}
+ void OnTimeout (object unused)
+ {
+ CloseSocket ();
+ Unbind ();
+ }
+
public void BeginReadRequest ()
{
if (buffer == null)
buffer = new byte [BufferSize];
- stream.BeginRead (buffer, 0, BufferSize, OnRead, this);
+ try {
+ if (reuses == 1)
+ s_timeout = 15000;
+ timer.Change (s_timeout, Timeout.Infinite);
+ stream.BeginRead (buffer, 0, BufferSize, onread_cb, this);
+ } catch {
+ timer.Change (Timeout.Infinite, Timeout.Infinite);
+ CloseSocket ();
+ Unbind ();
+ }
}
public RequestStream GetRequestStream (bool chunked, long contentlength)
if (chunked) {
this.chunked = true;
context.Response.SendChunked = true;
- i_stream = new ChunkedInputStream (context, sock, buffer, position, length - position);
+ i_stream = new ChunkedInputStream (context, stream, buffer, position, length - position);
} else {
- i_stream = new RequestStream (sock, buffer, position, length - position, contentlength);
+ i_stream = new RequestStream (stream, buffer, position, length - position, contentlength);
}
}
return i_stream;
if (o_stream == null) {
HttpListener listener = context.Listener;
bool ign = (listener == null) ? true : listener.IgnoreWriteExceptions;
- o_stream = new ResponseStream (sock, context.Response, ign);
+ o_stream = new ResponseStream (stream, context.Response, ign);
}
return o_stream;
}
- void OnRead (IAsyncResult ares)
+ static void OnRead (IAsyncResult ares)
{
- // TODO: set a limit on ms length.
HttpConnection cnc = (HttpConnection) ares.AsyncState;
+ cnc.OnReadInternal (ares);
+ }
+
+ void OnReadInternal (IAsyncResult ares)
+ {
+ timer.Change (Timeout.Infinite, Timeout.Infinite);
int nread = -1;
try {
nread = stream.EndRead (ares);
ms.Write (buffer, 0, nread);
+ if (ms.Length > 32768) {
+ SendError ("Bad request", 400);
+ Close (true);
+ return;
+ }
} catch {
- if (ms.Length > 0)
+ if (ms != null && ms.Length > 0)
SendError ();
- sock.Close ();
+ if (sock != null) {
+ CloseSocket ();
+ Unbind ();
+ }
return;
}
if (nread == 0) {
//if (ms.Length > 0)
// SendError (); // Why bother?
- sock.Close ();
+ CloseSocket ();
+ Unbind ();
return;
}
if (context.HaveError) {
SendError ();
- Close ();
+ Close (true);
return;
}
if (!epl.BindContext (context)) {
SendError ("Invalid host", 400);
- Close ();
+ Close (true);
+ return;
}
+ HttpListener listener = context.Listener;
+ if (last_listener != listener) {
+ RemoveConnection ();
+ listener.AddConnection (this);
+ last_listener = listener;
+ }
+
context_bound = true;
+ listener.RegisterContext (context);
return;
}
- stream.BeginRead (buffer, 0, BufferSize, OnRead, cnc);
+ stream.BeginRead (buffer, 0, BufferSize, onread_cb, this);
+ }
+
+ void RemoveConnection ()
+ {
+ if (last_listener == null)
+ epl.RemoveConnection (this);
+ else
+ last_listener.RemoveConnection (this);
}
enum InputState {
int len = (int) ms.Length;
int used = 0;
string line;
- while ((line = ReadLine (buffer, position, len - position, ref used)) != null) {
+
+ try {
+ line = ReadLine (buffer, position, len - position, ref used);
position += used;
+ } catch {
+ context.ErrorMessage = "Bad request";
+ context.ErrorStatus = 400;
+ return true;
+ }
+
+ do {
+ if (line == null)
+ break;
if (line == "") {
if (input_state == InputState.RequestLine)
continue;
context.Request.SetRequestLine (line);
input_state = InputState.Headers;
} else {
- context.Request.AddHeader (line);
+ try {
+ context.Request.AddHeader (line);
+ } catch (Exception e) {
+ context.ErrorMessage = e.Message;
+ context.ErrorStatus = 400;
+ return true;
+ }
}
if (context.HaveError)
if (position >= len)
break;
- }
+ try {
+ line = ReadLine (buffer, position, len - position, ref used);
+ position += used;
+ } catch {
+ context.ErrorMessage = "Bad request";
+ context.ErrorStatus = 400;
+ return true;
+ }
+ } while (line != null);
if (used == len) {
ms.SetLength (0);
string ReadLine (byte [] buffer, int offset, int len, ref int used)
{
if (current_line == null)
- current_line = new StringBuilder ();
+ current_line = new StringBuilder (128);
int last = offset + len;
used = 0;
for (int i = offset; i < last && line_state != LineState.LF; i++) {
public void SendError (string msg, int status)
{
- HttpListenerResponse response = context.Response;
- response.StatusCode = status;
- response.ContentType = "text/html";
- string description = HttpListenerResponse.GetStatusDescription (status);
- string str;
- if (msg != null)
- str = String.Format ("<h1>{0} ({1})</h1>", description, msg);
- else
- str = String.Format ("<h1>{0}</h1>", description);
-
- byte [] error = context.Response.ContentEncoding.GetBytes (str);
- response.Close (error, false);
+ try {
+ HttpListenerResponse response = context.Response;
+ response.StatusCode = status;
+ response.ContentType = "text/html";
+ string description = HttpListenerResponse.GetStatusDescription (status);
+ string str;
+ if (msg != null)
+ str = String.Format ("<h1>{0} ({1})</h1>", description, msg);
+ else
+ str = String.Format ("<h1>{0}</h1>", description);
+
+ byte [] error = context.Response.ContentEncoding.GetBytes (str);
+ response.Close (error, false);
+ } catch {
+ // response was already closed
+ }
}
public void SendError ()
SendError (context.ErrorMessage, context.ErrorStatus);
}
+ void Unbind ()
+ {
+ if (context_bound) {
+ epl.UnbindContext (context);
+ context_bound = false;
+ }
+ }
+
public void Close ()
{
- if (o_stream != null) {
- Stream st = o_stream;
- st.Close ();
+ Close (false);
+ }
+
+ void CloseSocket ()
+ {
+ if (sock == null)
+ return;
+
+ try {
+ sock.Close ();
+ } catch {
+ } finally {
+ sock = null;
+ }
+ RemoveConnection ();
+ }
+
+ internal void Close (bool force_close)
+ {
+ if (sock != null) {
+ Stream st = GetResponseStream ();
+ if (st != null)
+ st.Close ();
+
o_stream = null;
}
if (sock != null) {
- if (chunked && context.Response.ForceCloseChunked == false) {
- // Don't close. Keep working.
- chunked_uses++;
+ force_close |= !context.Request.KeepAlive;
+ if (!force_close)
+ force_close = (context.Response.Headers ["connection"] == "close");
+ /*
+ if (!force_close) {
+// bool conn_close = (status_code == 400 || status_code == 408 || status_code == 411 ||
+// status_code == 413 || status_code == 414 || status_code == 500 ||
+// status_code == 503);
+
+ force_close |= (context.Request.ProtocolVersion <= HttpVersion.Version10);
+ }
+ */
+
+ if (!force_close && context.Request.FlushInput ()) {
+ if (chunked && context.Response.ForceCloseChunked == false) {
+ // Don't close. Keep working.
+ reuses++;
+ Unbind ();
+ Init ();
+ BeginReadRequest ();
+ return;
+ }
+
+ reuses++;
+ Unbind ();
Init ();
BeginReadRequest ();
return;
Socket s = sock;
sock = null;
- s.Shutdown (SocketShutdown.Both);
- s.Close ();
- if (context_bound)
- epl.UnbindContext (context);
+ try {
+ if (s != null)
+ s.Shutdown (SocketShutdown.Both);
+ } catch {
+ } finally {
+ if (s != null)
+ s.Close ();
+ }
+ Unbind ();
+ RemoveConnection ();
+ return;
}
}
}
projects / mono.git / blobdiff