1 files changed, 91 insertions, 0 deletions

diff --git a/OpenSim/Framework/Servers/HttpServer/XmlRpcBasicDOSProtector.cs b/OpenSim/Framework/Servers/HttpServer/XmlRpcBasicDOSProtector.cs
new file mode 100644
index 0000000..f212208
--- /dev/null
+++ b/OpenSim/Framework/Servers/HttpServer/XmlRpcBasicDOSProtector.cs
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) Contributors, http://opensimulator.org/
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSimulator Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+using System.Net;
+using Nwc.XmlRpc;
+using OpenSim.Framework;
+
+
+namespace OpenSim.Framework.Servers.HttpServer
+{
+    public class XmlRpcBasicDOSProtector
+    {
+        private readonly XmlRpcMethod _normalMethod;
+        private readonly XmlRpcMethod _throttledMethod;
+       
+        private readonly BasicDosProtectorOptions _options;
+        private readonly BasicDOSProtector _dosProtector;
+
+        public XmlRpcBasicDOSProtector(XmlRpcMethod normalMethod, XmlRpcMethod throttledMethod,BasicDosProtectorOptions options)
+        {
+            _normalMethod = normalMethod;
+            _throttledMethod = throttledMethod;
+           
+            _options = options;
+            _dosProtector = new BasicDOSProtector(_options);
+
+        }
+        public XmlRpcResponse Process(XmlRpcRequest request, IPEndPoint client)
+        {
+
+            XmlRpcResponse resp = null;
+            string clientstring = GetClientString(request, client);
+            string endpoint = GetEndPoint(request, client);
+            if (_dosProtector.Process(clientstring, endpoint))
+                resp = _normalMethod(request, client);
+            else
+                resp = _throttledMethod(request, client);
+            if (_options.MaxConcurrentSessions > 0)
+                _dosProtector.ProcessEnd(clientstring, endpoint);
+            return resp;
+        }
+
+        private string GetClientString(XmlRpcRequest request, IPEndPoint client)
+        {
+            string clientstring;
+            if (_options.AllowXForwardedFor && request.Params.Count > 3)
+            {
+                object headerstr = request.Params[3];
+                if (headerstr != null && !string.IsNullOrEmpty(headerstr.ToString()))
+                    clientstring = request.Params[3].ToString();
+                else
+                    clientstring = client.Address.ToString();
+            }
+            else
+                clientstring = client.Address.ToString();
+            return clientstring;
+        }
+
+        private string GetEndPoint(XmlRpcRequest request, IPEndPoint client)
+        {
+             return client.Address.ToString();
+        }
+
+    }
+
+    
+}