From 2be0f7a6f0b66e25b0d7e0e6cfee93f0c41b562b Mon Sep 17 00:00:00 2001
From: Jeff Ames
Date: Tue, 30 Dec 2008 01:08:07 +0000
Subject: Update svn properties, minor formatting cleanup.

---
 OpenSim/Grid/UserServer/OpenIdService.cs | 678 +++++++++++++++----------------
 1 file changed, 339 insertions(+), 339 deletions(-)

(limited to 'OpenSim/Grid/UserServer/OpenIdService.cs')

diff --git a/OpenSim/Grid/UserServer/OpenIdService.cs b/OpenSim/Grid/UserServer/OpenIdService.cs
index 695968f..78e820e 100644
--- a/OpenSim/Grid/UserServer/OpenIdService.cs
+++ b/OpenSim/Grid/UserServer/OpenIdService.cs
@@ -1,339 +1,339 @@
-/*
- * 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 OpenSim 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.IO;
-using System.Net;
-using System.Web;
-using System.Text;
-using DotNetOpenId;
-using DotNetOpenId.Provider;
-using log4net;
-using OpenSim.Framework;
-using OpenSim.Framework.Servers;
-
-namespace OpenSim.Grid.UserServer
-{
-    /// <summary>
-    /// Temporary, in-memory store for OpenID associations
-    /// </summary>
-    public class ProviderMemoryStore : IAssociationStore<AssociationRelyingPartyType>
-    {
-        private class AssociationItem
-        {
-            public AssociationRelyingPartyType DistinguishingFactor;
-            public string Handle;
-            public DateTime Expires;
-            public byte[] PrivateData;
-        }
-
-        Dictionary<string, AssociationItem> m_store = new Dictionary<string, AssociationItem>();
-        SortedList<DateTime, AssociationItem> m_sortedStore = new SortedList<DateTime, AssociationItem>();
-        object m_syncRoot = new object();
-
-        #region IAssociationStore<AssociationRelyingPartyType> Members
-
-        public void StoreAssociation(AssociationRelyingPartyType distinguishingFactor, Association assoc)
-        {
-            AssociationItem item = new AssociationItem();
-            item.DistinguishingFactor = distinguishingFactor;
-            item.Handle = assoc.Handle;
-            item.Expires = assoc.Expires.ToLocalTime();
-            item.PrivateData = assoc.SerializePrivateData();
-
-            lock (m_syncRoot)
-            {
-                m_store[item.Handle] = item;
-                m_sortedStore[item.Expires] = item;
-            }
-        }
-
-        public Association GetAssociation(AssociationRelyingPartyType distinguishingFactor)
-        {
-            lock (m_syncRoot)
-            {
-                if (m_sortedStore.Count > 0)
-                {
-                    AssociationItem item = m_sortedStore.Values[m_sortedStore.Count - 1];
-                    return Association.Deserialize(item.Handle, item.Expires.ToUniversalTime(), item.PrivateData);
-                }
-                else
-                {
-                    return null;
-                }
-            }
-        }
-
-        public Association GetAssociation(AssociationRelyingPartyType distinguishingFactor, string handle)
-        {
-            AssociationItem item;
-            bool success = false;
-            lock (m_syncRoot)
-                success = m_store.TryGetValue(handle, out item);
-
-            if (success)
-                return Association.Deserialize(item.Handle, item.Expires.ToUniversalTime(), item.PrivateData);
-            else
-                return null;
-        }
-
-        public bool RemoveAssociation(AssociationRelyingPartyType distinguishingFactor, string handle)
-        {
-            lock (m_syncRoot)
-            {
-                for (int i = 0; i < m_sortedStore.Values.Count; i++)
-                {
-                    AssociationItem item = m_sortedStore.Values[i];
-                    if (item.Handle == handle)
-                    {
-                        m_sortedStore.RemoveAt(i);
-                        break;
-                    }
-                }
-
-                return m_store.Remove(handle);
-            }
-        }
-
-        public void ClearExpiredAssociations()
-        {
-            lock (m_syncRoot)
-            {
-                List<AssociationItem> itemsCopy = new List<AssociationItem>(m_sortedStore.Values);
-                DateTime now = DateTime.Now;
-
-                for (int i = 0; i < itemsCopy.Count; i++)
-                {
-                    AssociationItem item = itemsCopy[i];
-
-                    if (item.Expires <= now)
-                    {
-                        m_sortedStore.RemoveAt(i);
-                        m_store.Remove(item.Handle);
-                    }
-                }
-            }
-        }
-
-        #endregion
-    }
-
-    public class OpenIdStreamHandler : IStreamHandler
-    {
-        #region HTML
-
-        /// <summary>Login form used to authenticate OpenID requests</summary>
-        const string LOGIN_PAGE =
-@"<html>
-<head><title>OpenSim OpenID Login</title></head>
-<body>
-<h3>OpenSim Login</h3>
-<form method=""post"">
-<label for=""first"">First Name:</label> <input readonly type=""text"" name=""first"" id=""first"" value=""{0}""/>
-<label for=""last"">Last Name:</label> <input readonly type=""text"" name=""last"" id=""last"" value=""{1}""/>
-<label for=""pass"">Password:</label> <input type=""password"" name=""pass"" id=""pass""/>
-<input type=""submit"" value=""Login"">
-</form>
-</body>
-</html>";
-
-        /// <summary>Page shown for a valid OpenID identity</summary>
-        const string OPENID_PAGE =
-@"<html>
-<head>
-<title>{2} {3}</title>
-<link rel=""openid2.provider openid.server"" href=""{0}://{1}/openid/server/""/>
-</head>
-<body>OpenID identifier for {2} {3}</body>
-</html>
-";
-
-        /// <summary>Page shown for an invalid OpenID identity</summary>
-        const string INVALID_OPENID_PAGE = 
-@"<html><head><title>Identity not found</title></head>
-<body>Invalid OpenID identity</body></html>";
-
-        /// <summary>Page shown if the OpenID endpoint is requested directly</summary>
-        const string ENDPOINT_PAGE =
-@"<html><head><title>OpenID Endpoint</title></head><body>
-This is an OpenID server endpoint, not a human-readable resource. 
-For more information, see <a href='http://openid.net/'>http://openid.net/</a>.
-</body></html>";
-
-        #endregion HTML
-
-        public string ContentType { get { return m_contentType; } }
-        public string HttpMethod { get { return m_httpMethod; } }
-        public string Path { get { return m_path; } }
-
-        string m_contentType;
-        string m_httpMethod;
-        string m_path;
-        UserLoginService m_loginService;
-        ProviderMemoryStore m_openidStore = new ProviderMemoryStore();
-
-        /// <summary>
-        /// Constructor
-        /// </summary>
-        public OpenIdStreamHandler(string httpMethod, string path, UserLoginService loginService)
-        {
-            m_loginService = loginService;
-            m_httpMethod = httpMethod;
-            m_path = path;
-
-            m_contentType = "text/html";
-        }
-
-        /// <summary>
-        /// Handles all GET and POST requests for OpenID identifier pages and endpoint
-        /// server communication
-        /// </summary>
-        public void Handle(string path, Stream request, Stream response, OSHttpRequest httpRequest, OSHttpResponse httpResponse)
-        {
-            Uri providerEndpoint = new Uri(String.Format("{0}://{1}{2}", httpRequest.Url.Scheme, httpRequest.Url.Authority, httpRequest.Url.AbsolutePath));
-
-            // Defult to returning HTML content
-            m_contentType = "text/html";
-
-            try
-            {
-                NameValueCollection postQuery = HttpUtility.ParseQueryString(new StreamReader(httpRequest.InputStream).ReadToEnd());
-                NameValueCollection getQuery = HttpUtility.ParseQueryString(httpRequest.Url.Query);
-                NameValueCollection openIdQuery = (postQuery.GetValues("openid.mode") != null ? postQuery : getQuery);
-
-                OpenIdProvider provider = new OpenIdProvider(m_openidStore, providerEndpoint, httpRequest.Url, openIdQuery);
-
-                if (provider.Request != null)
-                {
-                    if (!provider.Request.IsResponseReady && provider.Request is IAuthenticationRequest)
-                    {
-                        IAuthenticationRequest authRequest = (IAuthenticationRequest)provider.Request;
-                        string[] passwordValues = postQuery.GetValues("pass");
-
-                        UserProfileData profile;
-                        if (TryGetProfile(new Uri(authRequest.ClaimedIdentifier.ToString()), out profile))
-                        {
-                            // Check for form POST data
-                            if (passwordValues != null && passwordValues.Length == 1)
-                            {
-                                if (profile != null && m_loginService.AuthenticateUser(profile, passwordValues[0]))
-                                    authRequest.IsAuthenticated = true;
-                                else
-                                    authRequest.IsAuthenticated = false;
-                            }
-                            else
-                            {
-                                // Authentication was requested, send the client a login form
-                                using (StreamWriter writer = new StreamWriter(response))
-                                    writer.Write(String.Format(LOGIN_PAGE, profile.FirstName, profile.SurName));
-                                return;
-                            }
-                        }
-                        else
-                        {
-                            // Cannot find an avatar matching the claimed identifier
-                            authRequest.IsAuthenticated = false;
-                        }
-                    }
-
-                    // Add OpenID headers to the response
-                    foreach (string key in provider.Request.Response.Headers.Keys)
-                        httpResponse.AddHeader(key, provider.Request.Response.Headers[key]);
-
-                    string[] contentTypeValues = provider.Request.Response.Headers.GetValues("Content-Type");
-                    if (contentTypeValues != null && contentTypeValues.Length == 1)
-                        m_contentType = contentTypeValues[0];
-
-                    // Set the response code and document body based on the OpenID result
-                    httpResponse.StatusCode = (int)provider.Request.Response.Code;
-                    response.Write(provider.Request.Response.Body, 0, provider.Request.Response.Body.Length);
-                    response.Close();
-                }
-                else if (httpRequest.Url.AbsolutePath.Contains("/openid/server"))
-                {
-                    // Standard HTTP GET was made on the OpenID endpoint, send the client the default error page
-                    using (StreamWriter writer = new StreamWriter(response))
-                        writer.Write(ENDPOINT_PAGE);
-                }
-                else
-                {
-                    // Try and lookup this avatar
-                    UserProfileData profile;
-                    if (TryGetProfile(httpRequest.Url, out profile))
-                    {
-                        using (StreamWriter writer = new StreamWriter(response))
-                        {
-                            // TODO: Print out a full profile page for this avatar
-                            writer.Write(String.Format(OPENID_PAGE, httpRequest.Url.Scheme,
-                                httpRequest.Url.Authority, profile.FirstName, profile.SurName));
-                        }
-                    }
-                    else
-                    {
-                        // Couldn't parse an avatar name, or couldn't find the avatar in the user server
-                        using (StreamWriter writer = new StreamWriter(response))
-                            writer.Write(INVALID_OPENID_PAGE);
-                    }
-                }
-            }
-            catch (Exception ex)
-            {
-                httpResponse.StatusCode = (int)HttpStatusCode.InternalServerError;
-                using (StreamWriter writer = new StreamWriter(response))
-                    writer.Write(ex.Message);
-            }
-        }
-
-        /// <summary>
-        /// Parse a URL with a relative path of the form /users/First_Last and try to
-        /// retrieve the profile matching that avatar name
-        /// </summary>
-        /// <param name="requestUrl">URL to parse for an avatar name</param>
-        /// <param name="profile">Profile data for the avatar</param>
-        /// <returns>True if the parse and lookup were successful, otherwise false</returns>
-        bool TryGetProfile(Uri requestUrl, out UserProfileData profile)
-        {
-            if (requestUrl.Segments.Length == 3 && requestUrl.Segments[1] == "users/")
-            {
-                // Parse the avatar name from the path
-                string username = requestUrl.Segments[requestUrl.Segments.Length - 1];
-                string[] name = username.Split('_');
-
-                if (name.Length == 2)
-                {
-                    profile = m_loginService.GetTheUser(name[0], name[1]);
-                    return (profile != null);
-                }
-            }
-
-            profile = null;
-            return false;
-        }
-    }
-}
+/*
+ * 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 OpenSim 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.IO;
+using System.Net;
+using System.Web;
+using System.Text;
+using DotNetOpenId;
+using DotNetOpenId.Provider;
+using log4net;
+using OpenSim.Framework;
+using OpenSim.Framework.Servers;
+
+namespace OpenSim.Grid.UserServer
+{
+    /// <summary>
+    /// Temporary, in-memory store for OpenID associations
+    /// </summary>
+    public class ProviderMemoryStore : IAssociationStore<AssociationRelyingPartyType>
+    {
+        private class AssociationItem
+        {
+            public AssociationRelyingPartyType DistinguishingFactor;
+            public string Handle;
+            public DateTime Expires;
+            public byte[] PrivateData;
+        }
+
+        Dictionary<string, AssociationItem> m_store = new Dictionary<string, AssociationItem>();
+        SortedList<DateTime, AssociationItem> m_sortedStore = new SortedList<DateTime, AssociationItem>();
+        object m_syncRoot = new object();
+
+        #region IAssociationStore<AssociationRelyingPartyType> Members
+
+        public void StoreAssociation(AssociationRelyingPartyType distinguishingFactor, Association assoc)
+        {
+            AssociationItem item = new AssociationItem();
+            item.DistinguishingFactor = distinguishingFactor;
+            item.Handle = assoc.Handle;
+            item.Expires = assoc.Expires.ToLocalTime();
+            item.PrivateData = assoc.SerializePrivateData();
+
+            lock (m_syncRoot)
+            {
+                m_store[item.Handle] = item;
+                m_sortedStore[item.Expires] = item;
+            }
+        }
+
+        public Association GetAssociation(AssociationRelyingPartyType distinguishingFactor)
+        {
+            lock (m_syncRoot)
+            {
+                if (m_sortedStore.Count > 0)
+                {
+                    AssociationItem item = m_sortedStore.Values[m_sortedStore.Count - 1];
+                    return Association.Deserialize(item.Handle, item.Expires.ToUniversalTime(), item.PrivateData);
+                }
+                else
+                {
+                    return null;
+                }
+            }
+        }
+
+        public Association GetAssociation(AssociationRelyingPartyType distinguishingFactor, string handle)
+        {
+            AssociationItem item;
+            bool success = false;
+            lock (m_syncRoot)
+                success = m_store.TryGetValue(handle, out item);
+
+            if (success)
+                return Association.Deserialize(item.Handle, item.Expires.ToUniversalTime(), item.PrivateData);
+            else
+                return null;
+        }
+
+        public bool RemoveAssociation(AssociationRelyingPartyType distinguishingFactor, string handle)
+        {
+            lock (m_syncRoot)
+            {
+                for (int i = 0; i < m_sortedStore.Values.Count; i++)
+                {
+                    AssociationItem item = m_sortedStore.Values[i];
+                    if (item.Handle == handle)
+                    {
+                        m_sortedStore.RemoveAt(i);
+                        break;
+                    }
+                }
+
+                return m_store.Remove(handle);
+            }
+        }
+
+        public void ClearExpiredAssociations()
+        {
+            lock (m_syncRoot)
+            {
+                List<AssociationItem> itemsCopy = new List<AssociationItem>(m_sortedStore.Values);
+                DateTime now = DateTime.Now;
+
+                for (int i = 0; i < itemsCopy.Count; i++)
+                {
+                    AssociationItem item = itemsCopy[i];
+
+                    if (item.Expires <= now)
+                    {
+                        m_sortedStore.RemoveAt(i);
+                        m_store.Remove(item.Handle);
+                    }
+                }
+            }
+        }
+
+        #endregion
+    }
+
+    public class OpenIdStreamHandler : IStreamHandler
+    {
+        #region HTML
+
+        /// <summary>Login form used to authenticate OpenID requests</summary>
+        const string LOGIN_PAGE =
+@"<html>
+<head><title>OpenSim OpenID Login</title></head>
+<body>
+<h3>OpenSim Login</h3>
+<form method=""post"">
+<label for=""first"">First Name:</label> <input readonly type=""text"" name=""first"" id=""first"" value=""{0}""/>
+<label for=""last"">Last Name:</label> <input readonly type=""text"" name=""last"" id=""last"" value=""{1}""/>
+<label for=""pass"">Password:</label> <input type=""password"" name=""pass"" id=""pass""/>
+<input type=""submit"" value=""Login"">
+</form>
+</body>
+</html>";
+
+        /// <summary>Page shown for a valid OpenID identity</summary>
+        const string OPENID_PAGE =
+@"<html>
+<head>
+<title>{2} {3}</title>
+<link rel=""openid2.provider openid.server"" href=""{0}://{1}/openid/server/""/>
+</head>
+<body>OpenID identifier for {2} {3}</body>
+</html>
+";
+
+        /// <summary>Page shown for an invalid OpenID identity</summary>
+        const string INVALID_OPENID_PAGE = 
+@"<html><head><title>Identity not found</title></head>
+<body>Invalid OpenID identity</body></html>";
+
+        /// <summary>Page shown if the OpenID endpoint is requested directly</summary>
+        const string ENDPOINT_PAGE =
+@"<html><head><title>OpenID Endpoint</title></head><body>
+This is an OpenID server endpoint, not a human-readable resource. 
+For more information, see <a href='http://openid.net/'>http://openid.net/</a>.
+</body></html>";
+
+        #endregion HTML
+
+        public string ContentType { get { return m_contentType; } }
+        public string HttpMethod { get { return m_httpMethod; } }
+        public string Path { get { return m_path; } }
+
+        string m_contentType;
+        string m_httpMethod;
+        string m_path;
+        UserLoginService m_loginService;
+        ProviderMemoryStore m_openidStore = new ProviderMemoryStore();
+
+        /// <summary>
+        /// Constructor
+        /// </summary>
+        public OpenIdStreamHandler(string httpMethod, string path, UserLoginService loginService)
+        {
+            m_loginService = loginService;
+            m_httpMethod = httpMethod;
+            m_path = path;
+
+            m_contentType = "text/html";
+        }
+
+        /// <summary>
+        /// Handles all GET and POST requests for OpenID identifier pages and endpoint
+        /// server communication
+        /// </summary>
+        public void Handle(string path, Stream request, Stream response, OSHttpRequest httpRequest, OSHttpResponse httpResponse)
+        {
+            Uri providerEndpoint = new Uri(String.Format("{0}://{1}{2}", httpRequest.Url.Scheme, httpRequest.Url.Authority, httpRequest.Url.AbsolutePath));
+
+            // Defult to returning HTML content
+            m_contentType = "text/html";
+
+            try
+            {
+                NameValueCollection postQuery = HttpUtility.ParseQueryString(new StreamReader(httpRequest.InputStream).ReadToEnd());
+                NameValueCollection getQuery = HttpUtility.ParseQueryString(httpRequest.Url.Query);
+                NameValueCollection openIdQuery = (postQuery.GetValues("openid.mode") != null ? postQuery : getQuery);
+
+                OpenIdProvider provider = new OpenIdProvider(m_openidStore, providerEndpoint, httpRequest.Url, openIdQuery);
+
+                if (provider.Request != null)
+                {
+                    if (!provider.Request.IsResponseReady && provider.Request is IAuthenticationRequest)
+                    {
+                        IAuthenticationRequest authRequest = (IAuthenticationRequest)provider.Request;
+                        string[] passwordValues = postQuery.GetValues("pass");
+
+                        UserProfileData profile;
+                        if (TryGetProfile(new Uri(authRequest.ClaimedIdentifier.ToString()), out profile))
+                        {
+                            // Check for form POST data
+                            if (passwordValues != null && passwordValues.Length == 1)
+                            {
+                                if (profile != null && m_loginService.AuthenticateUser(profile, passwordValues[0]))
+                                    authRequest.IsAuthenticated = true;
+                                else
+                                    authRequest.IsAuthenticated = false;
+                            }
+                            else
+                            {
+                                // Authentication was requested, send the client a login form
+                                using (StreamWriter writer = new StreamWriter(response))
+                                    writer.Write(String.Format(LOGIN_PAGE, profile.FirstName, profile.SurName));
+                                return;
+                            }
+                        }
+                        else
+                        {
+                            // Cannot find an avatar matching the claimed identifier
+                            authRequest.IsAuthenticated = false;
+                        }
+                    }
+
+                    // Add OpenID headers to the response
+                    foreach (string key in provider.Request.Response.Headers.Keys)
+                        httpResponse.AddHeader(key, provider.Request.Response.Headers[key]);
+
+                    string[] contentTypeValues = provider.Request.Response.Headers.GetValues("Content-Type");
+                    if (contentTypeValues != null && contentTypeValues.Length == 1)
+                        m_contentType = contentTypeValues[0];
+
+                    // Set the response code and document body based on the OpenID result
+                    httpResponse.StatusCode = (int)provider.Request.Response.Code;
+                    response.Write(provider.Request.Response.Body, 0, provider.Request.Response.Body.Length);
+                    response.Close();
+                }
+                else if (httpRequest.Url.AbsolutePath.Contains("/openid/server"))
+                {
+                    // Standard HTTP GET was made on the OpenID endpoint, send the client the default error page
+                    using (StreamWriter writer = new StreamWriter(response))
+                        writer.Write(ENDPOINT_PAGE);
+                }
+                else
+                {
+                    // Try and lookup this avatar
+                    UserProfileData profile;
+                    if (TryGetProfile(httpRequest.Url, out profile))
+                    {
+                        using (StreamWriter writer = new StreamWriter(response))
+                        {
+                            // TODO: Print out a full profile page for this avatar
+                            writer.Write(String.Format(OPENID_PAGE, httpRequest.Url.Scheme,
+                                httpRequest.Url.Authority, profile.FirstName, profile.SurName));
+                        }
+                    }
+                    else
+                    {
+                        // Couldn't parse an avatar name, or couldn't find the avatar in the user server
+                        using (StreamWriter writer = new StreamWriter(response))
+                            writer.Write(INVALID_OPENID_PAGE);
+                    }
+                }
+            }
+            catch (Exception ex)
+            {
+                httpResponse.StatusCode = (int)HttpStatusCode.InternalServerError;
+                using (StreamWriter writer = new StreamWriter(response))
+                    writer.Write(ex.Message);
+            }
+        }
+
+        /// <summary>
+        /// Parse a URL with a relative path of the form /users/First_Last and try to
+        /// retrieve the profile matching that avatar name
+        /// </summary>
+        /// <param name="requestUrl">URL to parse for an avatar name</param>
+        /// <param name="profile">Profile data for the avatar</param>
+        /// <returns>True if the parse and lookup were successful, otherwise false</returns>
+        bool TryGetProfile(Uri requestUrl, out UserProfileData profile)
+        {
+            if (requestUrl.Segments.Length == 3 && requestUrl.Segments[1] == "users/")
+            {
+                // Parse the avatar name from the path
+                string username = requestUrl.Segments[requestUrl.Segments.Length - 1];
+                string[] name = username.Split('_');
+
+                if (name.Length == 2)
+                {
+                    profile = m_loginService.GetTheUser(name[0], name[1]);
+                    return (profile != null);
+                }
+            }
+
+            profile = null;
+            return false;
+        }
+    }
+}
-- 
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