Make private services forbid llHTTPRequest() calls by rejecting those that have the X-SecondLife-Shard header.

If you need to enable this, set AllowHttpRequestIn = true in [Network] for all private services or individual [*Service] sections.

OpenSim/Framework/Servers/HttpServer/BaseStreamHandler.cs

@@ -56,12 +56,17 @@ namespace OpenSim.Framework.Servers.HttpServer
             string path, Stream request, IOSHttpRequest httpRequest, IOSHttpResponse httpResponse)
         {
             RequestsReceived++;
-            if (m_Auth != null && !m_Auth.Authenticate(httpRequest.Headers, httpResponse.AddHeader))
-            {
 
-                httpResponse.StatusCode = (int)HttpStatusCode.Unauthorized;
+            if (m_Auth != null)
-                httpResponse.ContentType = "text/plain";
+            {
-                return new byte[0];
+                HttpStatusCode statusCode;
+
+                if (!m_Auth.Authenticate(httpRequest.Headers, httpResponse.AddHeader, out statusCode))
+                {                
+                    httpResponse.StatusCode = (int)statusCode;
+                    httpResponse.ContentType = "text/plain";
+                    return new byte[0];
+                }
             }
 
             byte[] result = ProcessRequest(path, request, httpRequest, httpResponse);

OpenSim/Framework/ServiceAuth/BasicHttpAuthentication.cs

@@ -28,6 +28,7 @@
 using System;
 using System.Collections.Generic;
 using System.Collections.Specialized;
+using System.Net;
 using System.Reflection;
 
 using Nini.Config;
@@ -82,24 +83,28 @@ namespace OpenSim.Framework.ServiceAuth
             return false;
         }
 
-        public bool Authenticate(NameValueCollection requestHeaders, AddHeaderDelegate d)
+        public bool Authenticate(NameValueCollection requestHeaders, AddHeaderDelegate d, out HttpStatusCode statusCode)
         {
-            //m_log.DebugFormat("[HTTP BASIC AUTH]: Authenticate in {0}", remove_me);
+//            m_log.DebugFormat("[HTTP BASIC AUTH]: Authenticate in {0}", "BasicHttpAuthentication");
-            if (requestHeaders != null)
+
+            string value = requestHeaders.Get("Authorization");
+            if (value != null)
             {
-                string value = requestHeaders.Get("Authorization");
+                value = value.Trim();
-                if (value != null)
+                if (value.StartsWith("Basic "))
                 {
-                    value = value.Trim();
+                    value = value.Replace("Basic ", string.Empty);
-                    if (value.StartsWith("Basic "))
+                    if (Authenticate(value))
                     {
-                        value = value.Replace("Basic ", string.Empty);
+                        statusCode = HttpStatusCode.OK;
-                        if (Authenticate(value))
+                        return true;
-                            return true;
                     }
                 }
             }
+
             d("WWW-Authenticate", "Basic realm = \"Asset Server\"");
+
+            statusCode = HttpStatusCode.Unauthorized;
             return false;
         }
     }

OpenSim/Framework/ServiceAuth/CompoundAuthentication.cs

@@ -0,0 +1,71 @@
+/*
+ * 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;
+using System.Collections.Generic;
+using System.Collections.Specialized;
+using System.Linq;
+using System.Net;
+
+namespace OpenSim.Framework.ServiceAuth
+{
+    public class CompoundAuthentication : IServiceAuth
+    {
+        private List<IServiceAuth> m_authentications = new List<IServiceAuth>();
+
+        public int Count { get { return m_authentications.Count; } }
+
+        public void AddAuthenticator(IServiceAuth auth)
+        {
+            m_authentications.Add(auth);
+        }
+
+        public void RemoveAuthenticator(IServiceAuth auth)
+        {
+            m_authentications.Remove(auth);
+        }
+
+        public void AddAuthorization(NameValueCollection headers) {}
+
+        public bool Authenticate(string data)
+        {
+            return m_authentications.TrueForAll(a => a.Authenticate(data));
+        }
+
+        public bool Authenticate(NameValueCollection requestHeaders, AddHeaderDelegate d, out HttpStatusCode statusCode)
+        {
+            foreach (IServiceAuth auth in m_authentications)
+            {
+                if (!auth.Authenticate(requestHeaders, d, out statusCode))
+                    return false;
+            }
+
+            statusCode = HttpStatusCode.OK;
+            return true;
+        }
+    }
+}

OpenSim/Framework/ServiceAuth/DisallowLlHttpRequest.cs

@@ -0,0 +1,57 @@
+/*
+ * 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;
+using System.Collections.Specialized;
+using System.Net;
+
+namespace OpenSim.Framework.ServiceAuth
+{
+    public class DisallowLlHttpRequest : IServiceAuth
+    {
+        public void AddAuthorization(NameValueCollection headers) {}
+
+        public bool Authenticate(string data)
+        {
+            return false;
+        }
+
+        public bool Authenticate(NameValueCollection requestHeaders, AddHeaderDelegate d, out HttpStatusCode statusCode)
+        {
+//            Console.WriteLine("DisallowLlHttpRequest");
+
+            if (requestHeaders["X-SecondLife-Shard"] != null)
+            {
+                statusCode = HttpStatusCode.Forbidden;
+                return false;
+            }
+
+            statusCode = HttpStatusCode.OK;
+            return true;
+        }
+    }
+}

OpenSim/Framework/ServiceAuth/IServiceAuth.cs

@@ -26,6 +26,7 @@
  */
 
 using System;
+using System.Net;
 using System.Collections.Generic;
 using System.Collections.Specialized;
 
@@ -36,7 +37,7 @@ namespace OpenSim.Framework.ServiceAuth
     public interface  IServiceAuth
     {
         bool Authenticate(string data);
-        bool Authenticate(NameValueCollection headers, AddHeaderDelegate d);
+        bool Authenticate(NameValueCollection headers, AddHeaderDelegate d, out HttpStatusCode statusCode);
         void AddAuthorization(NameValueCollection headers);
     }
 }

OpenSim/Framework/ServiceAuth/ServiceAuth.cs

@@ -36,15 +36,27 @@ namespace OpenSim.Framework.ServiceAuth
     {
         public static IServiceAuth Create(IConfigSource config, string section)
         {
+            CompoundAuthentication compoundAuth = new CompoundAuthentication();
+
+            bool allowLlHttpRequestIn
+                = Util.GetConfigVarFromSections<bool>(config, "AllowllHTTPRequestIn", new string[] { "Network", section }, false);
+
+            if (!allowLlHttpRequestIn)
+                compoundAuth.AddAuthenticator(new DisallowLlHttpRequest());
+
             string authType = Util.GetConfigVarFromSections<string>(config, "AuthType", new string[] { "Network", section }, "None");
 
             switch (authType)
             {
                 case "BasicHttpAuthentication":
-                    return new BasicHttpAuthentication(config, section);
+                    compoundAuth.AddAuthenticator(new BasicHttpAuthentication(config, section));
+                    break;
             }
 
-            return null;
+            if (compoundAuth.Count > 0)
+                return compoundAuth;
+            else
+                return null;
         }
     }
 }

bin/Robust.HG.ini.example

@@ -153,6 +153,13 @@
     ;; Hypergrid services are not affected by this; they are publicly available 
     ;; by design.
 
+    ;; By default, scripts are not allowed to call private services via llHttpRequest()
+    ;; Such calls are detected by the X-SecondLife-Shared HTTP header
+    ;; If you allow such calls you must be sure that they are restricted to very trusted scripters
+    ;; (remember scripts can also be in visiting avatar attachments).
+    ;; This can be overriden in individual private service sections if necessary
+    AllowllHTTPRequestIn = false
+
     ; * The following are for the remote console
     ; * They have no effect for the local or basic console types
     ; * Leave commented to diable logins to the console

bin/Robust.ini.example

@@ -130,6 +130,13 @@
     ;; but unprotect individual services. Username and Password can also be
     ;; overriden if you want to use different credentials for the different services.
     
+    ;; By default, scripts are not allowed to call private services via llHttpRequest()
+    ;; Such calls are detected by the X-SecondLife-Shared HTTP header
+    ;; If you allow such calls you must be sure that they are restricted to very trusted scripters
+    ;; (remember scripts can also be in visiting avatar attachments).
+    ;; This can be overriden in individual private service sections if necessary
+    AllowllHTTPRequestIn = false
+
     ; * The following are for the remote console
     ; * They have no effect for the local or basic console types
     ; * Leave commented to diable logins to the console