// System.Net.EndPointListener
//
// 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) 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
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
-#if NET_2_0 && SECURITY_DEP
+#if SECURITY_DEP
+
+extern alias MonoSecurity;
using System.IO;
using System.Net.Sockets;
using System.Collections;
+using System.Collections.Generic;
using System.Security.Cryptography;
using System.Security.Cryptography.X509Certificates;
using System.Threading;
-using Mono.Security.Authenticode;
+using MonoSecurity::Mono.Security.Authenticode;
namespace System.Net {
sealed class EndPointListener
{
IPEndPoint endpoint;
Socket sock;
- ReaderWriterLock plock;
Hashtable prefixes; // Dictionary <ListenerPrefix, HttpListener>
ArrayList unhandled; // List<ListenerPrefix> unhandled; host = '*'
ArrayList all; // List<ListenerPrefix> all; host = '+'
X509Certificate2 cert;
AsymmetricAlgorithm key;
bool secure;
+ Dictionary<HttpConnection, HttpConnection> unregistered;
public EndPointListener (IPAddress addr, int port, bool secure)
{
args.Completed += OnAccept;
sock.AcceptAsync (args);
prefixes = new Hashtable ();
- plock = new ReaderWriterLock ();
+ unregistered = new Dictionary<HttpConnection, HttpConnection> ();
}
void LoadCertificateAndKey (IPAddress addr, int port)
string path = Path.Combine (dirname, ".mono");
path = Path.Combine (path, "httplistener");
string cert_file = Path.Combine (path, String.Format ("{0}.cer", port));
+ if (!File.Exists (cert_file))
+ return;
string pvk_file = Path.Combine (path, String.Format ("{0}.pvk", port));
+ if (!File.Exists (pvk_file))
+ return;
cert = new X509Certificate2 (cert_file);
key = PrivateKey.CreateFromFile (pvk_file).RSA;
} catch {
return;
}
HttpConnection conn = new HttpConnection (accepted, epl, epl.secure, epl.cert, epl.key);
+ lock (epl.unregistered) {
+ epl.unregistered [conn] = conn;
+ }
conn.BeginReadRequest ();
}
+ 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.UserHostName, req.Url, out prefix);
+ HttpListener listener = SearchListener (req.Url, out prefix);
if (listener == null)
return false;
context.Listener = listener;
context.Connection.Prefix = prefix;
- listener.RegisterContext (context);
return true;
}
if (context == null || context.Request == null)
return;
- HttpListenerRequest req = context.Request;
- ListenerPrefix prefix;
- HttpListener listener = SearchListener (req.UserHostName, req.Url, out prefix);
- if (listener != null)
- listener.UnregisterContext (context);
+ context.Listener.UnregisterContext (context);
}
- HttpListener SearchListener (string host, Uri uri, out ListenerPrefix prefix)
+ HttpListener SearchListener (Uri uri, out ListenerPrefix prefix)
{
prefix = null;
if (uri == null)
return null;
- //TODO: We should use a ReaderWriterLock between this and the add/remove operations.
- if (host != null) {
- int colon = host.IndexOf (':');
- if (colon >= 0)
- host = host.Substring (0, colon);
- }
-
+ string host = uri.Host;
+ int port = uri.Port;
string path = HttpUtility.UrlDecode (uri.AbsolutePath);
string path_slash = path [path.Length - 1] == '/' ? path : path + "/";
HttpListener best_match = null;
int best_length = -1;
- try {
- plock.AcquireReaderLock (-1);
- if (host != null && host != "") {
- foreach (ListenerPrefix p in prefixes.Keys) {
- string ppath = p.Path;
- if (ppath.Length < best_length)
- continue;
-
- if (p.Host == host && (path.StartsWith (ppath) || path_slash.StartsWith (ppath))) {
- best_length = ppath.Length;
- best_match = (HttpListener) prefixes [p];
- prefix = p;
- }
- }
- if (best_length != -1)
- return best_match;
- }
+ if (host != null && host != "") {
+ Hashtable p_ro = prefixes;
+ foreach (ListenerPrefix p in p_ro.Keys) {
+ string ppath = p.Path;
+ if (ppath.Length < best_length)
+ continue;
- best_match = MatchFromList (host, path, unhandled, out prefix);
- if (best_match != null)
- return best_match;
+ if (p.Host != host || p.Port != port)
+ continue;
- best_match = MatchFromList (host, path, all, out prefix);
- if (best_match != null)
+ 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;
- } finally {
- try {
- plock.ReleaseReaderLock ();
- } catch {}
}
+
+ ArrayList 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;
}
if (coll == null)
return;
- try {
- plock.AcquireReaderLock (-1);
- foreach (ListenerPrefix p in coll) {
- if (p.Path == prefix.Path) //TODO: code
- throw new HttpListenerException (400, "Prefix already in use.");
- }
- plock.UpgradeToWriterLock (-1);
- coll.Add (prefix);
- } finally {
- try {
- plock.ReleaseReaderLock (); // This releases the writer lock if held.
- } catch { }
+ foreach (ListenerPrefix p in coll) {
+ if (p.Path == prefix.Path) //TODO: code
+ throw new HttpListenerException (400, "Prefix already in use.");
}
+ coll.Add (prefix);
}
- void RemoveSpecial (ArrayList coll, ListenerPrefix prefix)
+ bool RemoveSpecial (ArrayList coll, ListenerPrefix prefix)
{
if (coll == null)
- return;
+ return false;
- try {
- plock.AcquireReaderLock (-1);
- int c = coll.Count;
- for (int i = 0; i < c; i++) {
- ListenerPrefix p = (ListenerPrefix) coll [i];
- if (p.Path == prefix.Path) {
- plock.UpgradeToWriterLock (-1);
- coll.RemoveAt (i);
- CheckIfRemove ();
- return;
- }
+ 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;
}
- } finally {
- try {
- plock.ReleaseReaderLock (); // Releases the writer lock if held
- } catch {}
}
+ return false;
}
- // Writer lock held when calling (could use just reader)
void CheckIfRemove ()
{
if (prefixes.Count > 0)
return;
- if (unhandled != null && unhandled.Count > 0)
+ ArrayList list = unhandled;
+ if (list != null && list.Count > 0)
return;
- if (all != null && all.Count > 0)
+ list = all;
+ if (list != null && list.Count > 0)
return;
EndPointManager.RemoveEndPoint (this, endpoint);
public void Close ()
{
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)
{
+ ArrayList current;
+ ArrayList future;
if (prefix.Host == "*") {
- if (unhandled == null)
- unhandled = new ArrayList ();
-
- prefix.Listener = listener;
- AddSpecial (unhandled, prefix);
+ do {
+ current = unhandled;
+ future = (current != null) ? (ArrayList) current.Clone () : new ArrayList ();
+ prefix.Listener = listener;
+ AddSpecial (future, prefix);
+ } while (Interlocked.CompareExchange (ref unhandled, future, current) != current);
return;
}
if (prefix.Host == "+") {
- if (all == null)
- all = new ArrayList ();
- prefix.Listener = listener;
- AddSpecial (all, prefix);
+ do {
+ current = all;
+ future = (current != null) ? (ArrayList) current.Clone () : new ArrayList ();
+ prefix.Listener = listener;
+ AddSpecial (future, prefix);
+ } while (Interlocked.CompareExchange (ref all, future, current) != current);
return;
}
- try {
- plock.AcquireReaderLock (-1);
- if (prefixes.ContainsKey (prefix)) {
- HttpListener other = (HttpListener) prefixes [prefix];
+ Hashtable prefs, 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;
}
- plock.AcquireWriterLock (-1);
- prefixes [prefix] = listener;
- } finally {
- try {
- plock.ReleaseReaderLock ();
- } catch {}
- }
+ p2 = (Hashtable) prefs.Clone ();
+ p2 [prefix] = listener;
+ } while (Interlocked.CompareExchange (ref prefixes, p2, prefs) != prefs);
}
public void RemovePrefix (ListenerPrefix prefix, HttpListener listener)
{
+ ArrayList current;
+ ArrayList future;
if (prefix.Host == "*") {
- RemoveSpecial (unhandled, prefix);
+ do {
+ current = unhandled;
+ future = (current != null) ? (ArrayList) current.Clone () : new ArrayList ();
+ if (!RemoveSpecial (future, prefix))
+ break; // Prefix not found
+ } while (Interlocked.CompareExchange (ref unhandled, future, current) != current);
+ CheckIfRemove ();
return;
}
if (prefix.Host == "+") {
- RemoveSpecial (all, prefix);
+ do {
+ current = all;
+ future = (current != null) ? (ArrayList) current.Clone () : new ArrayList ();
+ if (!RemoveSpecial (future, prefix))
+ break; // Prefix not found
+ } while (Interlocked.CompareExchange (ref all, future, current) != current);
+ CheckIfRemove ();
return;
}
- try {
- plock.AcquireReaderLock (-1);
- if (prefixes.ContainsKey (prefix)) {
- plock.UpgradeToWriterLock (-1);
- prefixes.Remove (prefix);
- CheckIfRemove ();
- }
- } finally {
- try {
- plock.ReleaseReaderLock ();
- } catch {}
- }
+ Hashtable prefs, p2;
+ do {
+ prefs = prefixes;
+ if (!prefs.ContainsKey (prefix))
+ break;
+
+ p2 = (Hashtable) prefs.Clone ();
+ p2.Remove (prefix);
+ } while (Interlocked.CompareExchange (ref prefixes, p2, prefs) != prefs);
+ CheckIfRemove ();
}
}
}