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-rw-r--r--OpenSim/Framework/Servers/HttpServer/BaseStreamHandlerBasicDOSProtector.cs107
-rw-r--r--OpenSim/Framework/Servers/HttpServer/GenericHTTPBasicDOSProtector.cs119
-rw-r--r--OpenSim/Framework/Servers/HttpServer/XmlRpcBasicDOSProtector.cs91
3 files changed, 317 insertions, 0 deletions
diff --git a/OpenSim/Framework/Servers/HttpServer/BaseStreamHandlerBasicDOSProtector.cs b/OpenSim/Framework/Servers/HttpServer/BaseStreamHandlerBasicDOSProtector.cs
new file mode 100644
index 0000000..1b88545
--- /dev/null
+++ b/OpenSim/Framework/Servers/HttpServer/BaseStreamHandlerBasicDOSProtector.cs
@@ -0,0 +1,107 @@
1/*
2 * Copyright (c) Contributors, http://opensimulator.org/
3 * See CONTRIBUTORS.TXT for a full list of copyright holders.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of the OpenSimulator Project nor the
13 * names of its contributors may be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27using OpenSim.Framework;
28using System.IO;
29
30namespace OpenSim.Framework.Servers.HttpServer
31{
32 /// <summary>
33 /// BaseStreamHandlerBasicDOSProtector Base streamed request handler.
34 /// </summary>
35 /// <remarks>
36 /// Inheriting classes should override ProcessRequest() rather than Handle()
37 /// </remarks>
38 public abstract class BaseStreamHandlerBasicDOSProtector : BaseRequestHandler, IStreamedRequestHandler
39 {
40
41 private readonly BasicDosProtectorOptions _options;
42 private readonly BasicDOSProtector _dosProtector;
43
44 protected BaseStreamHandlerBasicDOSProtector(string httpMethod, string path, BasicDosProtectorOptions options) : this(httpMethod, path, null, null, options) {}
45
46 protected BaseStreamHandlerBasicDOSProtector(string httpMethod, string path, string name, string description, BasicDosProtectorOptions options)
47 : base(httpMethod, path, name, description)
48 {
49 _options = options;
50 _dosProtector = new BasicDOSProtector(_options);
51 }
52
53 public virtual byte[] Handle(
54 string path, Stream request, IOSHttpRequest httpRequest, IOSHttpResponse httpResponse)
55 {
56 byte[] result;
57 RequestsReceived++;
58 string clientstring = GetClientString(httpRequest);
59 string endpoint = GetRemoteAddr(httpRequest);
60 if (_dosProtector.Process(clientstring, endpoint))
61 result = ProcessRequest(path, request, httpRequest, httpResponse);
62 else
63 result = ThrottledRequest(path, request, httpRequest, httpResponse);
64 if (_options.MaxConcurrentSessions > 0)
65 _dosProtector.ProcessEnd(clientstring, endpoint);
66
67 RequestsHandled++;
68
69 return result;
70 }
71
72 protected virtual byte[] ProcessRequest(
73 string path, Stream request, IOSHttpRequest httpRequest, IOSHttpResponse httpResponse)
74 {
75 return null;
76 }
77
78 protected virtual byte[] ThrottledRequest(
79 string path, Stream request, IOSHttpRequest httpRequest, IOSHttpResponse httpResponse)
80 {
81 return new byte[0];
82 }
83
84
85 private string GetRemoteAddr(IOSHttpRequest httpRequest)
86 {
87 string remoteaddr = string.Empty;
88 if (httpRequest.Headers["remote_addr"] != null)
89 remoteaddr = httpRequest.Headers["remote_addr"];
90
91 return remoteaddr;
92 }
93
94 private string GetClientString(IOSHttpRequest httpRequest)
95 {
96 string clientstring = string.Empty;
97
98 if (_options.AllowXForwardedFor && httpRequest.Headers["x-forwarded-for"] != null)
99 clientstring = httpRequest.Headers["x-forwarded-for"];
100 else
101 clientstring = GetRemoteAddr(httpRequest);
102
103 return clientstring;
104
105 }
106 }
107}
diff --git a/OpenSim/Framework/Servers/HttpServer/GenericHTTPBasicDOSProtector.cs b/OpenSim/Framework/Servers/HttpServer/GenericHTTPBasicDOSProtector.cs
new file mode 100644
index 0000000..cd4b8ff
--- /dev/null
+++ b/OpenSim/Framework/Servers/HttpServer/GenericHTTPBasicDOSProtector.cs
@@ -0,0 +1,119 @@
1/*
2 * Copyright (c) Contributors, http://opensimulator.org/
3 * See CONTRIBUTORS.TXT for a full list of copyright holders.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of the OpenSimulator Project nor the
13 * names of its contributors may be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28using System.Collections;
29
30namespace OpenSim.Framework.Servers.HttpServer
31{
32 public class GenericHTTPDOSProtector
33 {
34 private readonly GenericHTTPMethod _normalMethod;
35 private readonly GenericHTTPMethod _throttledMethod;
36
37 private readonly BasicDosProtectorOptions _options;
38 private readonly BasicDOSProtector _dosProtector;
39
40 public GenericHTTPDOSProtector(GenericHTTPMethod normalMethod, GenericHTTPMethod throttledMethod, BasicDosProtectorOptions options)
41 {
42 _normalMethod = normalMethod;
43 _throttledMethod = throttledMethod;
44
45 _options = options;
46 _dosProtector = new BasicDOSProtector(_options);
47 }
48 public Hashtable Process(Hashtable request)
49 {
50 Hashtable process = null;
51 string clientstring= GetClientString(request);
52 string endpoint = GetRemoteAddr(request);
53 if (_dosProtector.Process(clientstring, endpoint))
54 process = _normalMethod(request);
55 else
56 process = _throttledMethod(request);
57
58 if (_options.MaxConcurrentSessions>0)
59 _dosProtector.ProcessEnd(clientstring, endpoint);
60
61 return process;
62 }
63
64 private string GetRemoteAddr(Hashtable request)
65 {
66 string remoteaddr = "";
67 if (!request.ContainsKey("headers"))
68 return remoteaddr;
69 Hashtable requestinfo = (Hashtable)request["headers"];
70 if (!requestinfo.ContainsKey("remote_addr"))
71 return remoteaddr;
72 object remote_addrobj = requestinfo["remote_addr"];
73 if (remote_addrobj != null)
74 {
75 if (!string.IsNullOrEmpty(remote_addrobj.ToString()))
76 {
77 remoteaddr = remote_addrobj.ToString();
78 }
79
80 }
81 return remoteaddr;
82 }
83
84 private string GetClientString(Hashtable request)
85 {
86 string clientstring = "";
87 if (!request.ContainsKey("headers"))
88 return clientstring;
89
90 Hashtable requestinfo = (Hashtable)request["headers"];
91 if (_options.AllowXForwardedFor && requestinfo.ContainsKey("x-forwarded-for"))
92 {
93 object str = requestinfo["x-forwarded-for"];
94 if (str != null)
95 {
96 if (!string.IsNullOrEmpty(str.ToString()))
97 {
98 return str.ToString();
99 }
100 }
101 }
102 if (!requestinfo.ContainsKey("remote_addr"))
103 return clientstring;
104
105 object remote_addrobj = requestinfo["remote_addr"];
106 if (remote_addrobj != null)
107 {
108 if (!string.IsNullOrEmpty(remote_addrobj.ToString()))
109 {
110 clientstring = remote_addrobj.ToString();
111 }
112 }
113
114 return clientstring;
115
116 }
117
118 }
119}
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 @@
1/*
2 * Copyright (c) Contributors, http://opensimulator.org/
3 * See CONTRIBUTORS.TXT for a full list of copyright holders.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of the OpenSimulator Project nor the
13 * names of its contributors may be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28using System.Net;
29using Nwc.XmlRpc;
30using OpenSim.Framework;
31
32
33namespace OpenSim.Framework.Servers.HttpServer
34{
35 public class XmlRpcBasicDOSProtector
36 {
37 private readonly XmlRpcMethod _normalMethod;
38 private readonly XmlRpcMethod _throttledMethod;
39
40 private readonly BasicDosProtectorOptions _options;
41 private readonly BasicDOSProtector _dosProtector;
42
43 public XmlRpcBasicDOSProtector(XmlRpcMethod normalMethod, XmlRpcMethod throttledMethod,BasicDosProtectorOptions options)
44 {
45 _normalMethod = normalMethod;
46 _throttledMethod = throttledMethod;
47
48 _options = options;
49 _dosProtector = new BasicDOSProtector(_options);
50
51 }
52 public XmlRpcResponse Process(XmlRpcRequest request, IPEndPoint client)
53 {
54
55 XmlRpcResponse resp = null;
56 string clientstring = GetClientString(request, client);
57 string endpoint = GetEndPoint(request, client);
58 if (_dosProtector.Process(clientstring, endpoint))
59 resp = _normalMethod(request, client);
60 else
61 resp = _throttledMethod(request, client);
62 if (_options.MaxConcurrentSessions > 0)
63 _dosProtector.ProcessEnd(clientstring, endpoint);
64 return resp;
65 }
66
67 private string GetClientString(XmlRpcRequest request, IPEndPoint client)
68 {
69 string clientstring;
70 if (_options.AllowXForwardedFor && request.Params.Count > 3)
71 {
72 object headerstr = request.Params[3];
73 if (headerstr != null && !string.IsNullOrEmpty(headerstr.ToString()))
74 clientstring = request.Params[3].ToString();
75 else
76 clientstring = client.Address.ToString();
77 }
78 else
79 clientstring = client.Address.ToString();
80 return clientstring;
81 }
82
83 private string GetEndPoint(XmlRpcRequest request, IPEndPoint client)
84 {
85 return client.Address.ToString();
86 }
87
88 }
89
90
91}
generated by cgit v1.1 at 2024-07-16 02:47:05 +0000