1 files changed, 170 insertions, 0 deletions

diff --git a/OpenSim/Framework/Communications/Osp/OspResolver.cs b/OpenSim/Framework/Communications/Osp/OspResolver.cs
new file mode 100644
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+++ b/OpenSim/Framework/Communications/Osp/OspResolver.cs
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+/*
+ * 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.Reflection;
+using System.Text;
+using log4net;
+using OpenMetaverse;
+using OpenSim.Framework;
+using OpenSim.Framework.Communications.Cache;
+
+namespace OpenSim.Framework.Communications.Osp
+{    
+    /// <summary>
+    /// Resolves OpenSim Profile Anchors (OSPA).  An OSPA is a string used to provide information for 
+    /// identifying user profiles or supplying a simple name if no profile is available.
+    /// </summary>
+    public class OspResolver
+    {   
+        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+        
+        public const string OSPA_PREFIX = "ospa:";
+        public const string OSPA_NAME_KEY = "n";
+        public const string OSPA_NAME_VALUE_SEPARATOR = " ";
+        public const string OSPA_TUPLE_SEPARATOR = "|";
+        public static readonly char[] OSPA_TUPLE_SEPARATOR_ARRAY = OSPA_TUPLE_SEPARATOR.ToCharArray();
+        public const string OSPA_PAIR_SEPARATOR = "=";
+
+        /// <summary>
+        /// Make an OSPA given a user UUID
+        /// </summary>
+        /// <param name="userId"></param>
+        /// <param name="commsManager"></param>
+        /// <returns>The OSPA.  Null if a user with the given UUID could not be found.</returns>
+        public static string MakeOspa(UUID userId, CommunicationsManager commsManager)
+        {
+            CachedUserInfo userInfo = commsManager.UserProfileCacheService.GetUserDetails(userId);
+            if (userInfo != null)
+                return MakeOspa(userInfo.UserProfile.FirstName, userInfo.UserProfile.SurName);
+
+            return null;
+        }
+        
+        /// <summary>
+        /// Make an OSPA given a user name
+        /// </summary>
+        /// <param name="name"></param>
+        /// <returns></returns>
+        public static string MakeOspa(string firstName, string lastName)
+        {
+            return 
+                OSPA_PREFIX + OSPA_NAME_KEY + OSPA_PAIR_SEPARATOR + firstName + OSPA_NAME_VALUE_SEPARATOR + lastName;
+        }        
+        
+        /// <summary>
+        /// Resolve an osp string into the most suitable internal OpenSim identifier.
+        /// </summary>
+        /// 
+        /// In some cases this will be a UUID if a suitable profile exists on the system.  In other cases, this may
+        /// just return the same identifier after creating a temporary profile.
+        /// 
+        /// <param name="ospa"></param>
+        /// <param name="commsManager"></param>
+        /// <returns>
+        /// A suitable internal OpenSim identifier.  If the input string wasn't ospi data, then we simply
+        /// return that same string.  If the input string was ospi data but no valid profile information has been found,
+        /// then returns null.
+        /// </returns>
+        public static string ResolveOspa(string ospa, CommunicationsManager commsManager)
+        {
+            m_log.DebugFormat("[OSP RESOLVER]: Resolving {0}", ospa);
+            
+            if (!ospa.StartsWith(OSPA_PREFIX))
+                return ospa;
+            
+            string ospaMeat = ospa.Substring(OSPA_PREFIX.Length);            
+            string[] ospaTuples = ospaMeat.Split(OSPA_TUPLE_SEPARATOR_ARRAY);
+            
+            foreach (string tuple in ospaTuples)
+            {
+                int tupleSeparatorIndex = tuple.IndexOf(OSPA_PAIR_SEPARATOR);
+
+                if (tupleSeparatorIndex < 0)
+                {
+                    m_log.WarnFormat("[OSP RESOLVER]: Ignoring non-tuple component {0} in OSPA {1}", tuple, ospa);
+                    continue;
+                }
+                
+                string key = tuple.Remove(tupleSeparatorIndex).Trim();
+                string value = tuple.Substring(tupleSeparatorIndex + 1).Trim();
+                
+                if (OSPA_NAME_KEY == key)
+                    return ResolveOspaName(value, commsManager);
+            }
+            
+            return null;
+        }
+        
+        /// <summary>
+        /// Hash a profile name into a UUID
+        /// </summary>
+        /// <param name="name"></param>
+        /// <returns></returns>
+        public static UUID HashName(string name)
+        {
+            return new UUID(Utils.MD5(Encoding.Unicode.GetBytes(name)), 0);
+        }
+        
+        /// <summary>
+        /// Resolve an OSPI name by querying existing persistent user profiles.  If there is no persistent user profile
+        /// then a temporary user profile is inserted in the cache.
+        /// </summary>
+        /// <param name="name"></param>
+        /// <param name="commsManager"></param>
+        /// <returns>
+        /// An OpenSim internal identifier for the name given.  Returns null if the name was not valid
+        /// </returns>
+        protected static string ResolveOspaName(string name, CommunicationsManager commsManager)
+        {
+            int nameSeparatorIndex = name.IndexOf(OSPA_NAME_VALUE_SEPARATOR);
+            
+            if (nameSeparatorIndex < 0)
+            {
+                m_log.WarnFormat("[OSP RESOLVER]: Ignoring unseparated name {0}", name);
+                return null;
+            }
+            
+            string firstName = name.Remove(nameSeparatorIndex).TrimEnd();
+            string lastName = name.Substring(nameSeparatorIndex + 1).TrimStart();
+            
+            CachedUserInfo userInfo = commsManager.UserProfileCacheService.GetUserDetails(firstName, lastName);
+            if (userInfo != null)
+                return userInfo.UserProfile.ID.ToString();
+                        
+            UserProfileData tempUserProfile = new UserProfileData();
+            tempUserProfile.FirstName = firstName;
+            tempUserProfile.SurName = lastName;
+            tempUserProfile.ID = HashName(tempUserProfile.Name);
+            
+            m_log.DebugFormat(
+                "[OSP RESOLVER]: Adding temporary user profile for {0} {1}", tempUserProfile.Name, tempUserProfile.ID);            
+            commsManager.UserService.AddTemporaryUserProfile(tempUserProfile);
+            
+            return tempUserProfile.ID.ToString();
+        }
+    }
+}