4 files changed, 238 insertions, 157 deletions

diff --git a/OpenSim/Region/CoreModules/Avatar/Friends/CallingCardModule.cs b/OpenSim/Region/CoreModules/Avatar/Friends/CallingCardModule.cs
index 5e2a651..d942e87 100644
--- a/OpenSim/Region/CoreModules/Avatar/Friends/CallingCardModule.cs
+++ b/OpenSim/Region/CoreModules/Avatar/Friends/CallingCardModule.cs
@@ -1,4 +1,31 @@
-using System;
+/*
+ * 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.Reflection;
 using log4net;
@@ -10,7 +37,7 @@ using OpenSim.Region.Framework.Scenes;
 using OpenSim.Services.Interfaces;
 using Mono.Addins;
 
-namespace Careminster.XCallingCard.Modules
+namespace OpenSim.Region.CoreModules.Avatar.Friends
 {
     [Extension(Path = "/OpenSim/RegionModules", NodeName = "RegionModule", Id = "XCallingCard")]
     public class CallingCardModule : ISharedRegionModule, ICallingCardModule
diff --git a/OpenSim/Region/CoreModules/Avatar/Friends/FriendsModule.cs b/OpenSim/Region/CoreModules/Avatar/Friends/FriendsModule.cs
index 4cc0e19..f64c161 100644
--- a/OpenSim/Region/CoreModules/Avatar/Friends/FriendsModule.cs
+++ b/OpenSim/Region/CoreModules/Avatar/Friends/FriendsModule.cs
@@ -51,12 +51,15 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
 {
     public class FriendsModule : ISharedRegionModule, IFriendsModule
     {
+        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+
         protected bool m_Enabled = false;
 
         protected class UserFriendData
         {
             public UUID PrincipalID;
             public FriendInfo[] Friends;
+            public int Refcount;
 
             public bool IsFriend(string friend)
             {
@@ -71,7 +74,6 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
         }
 
         protected static readonly FriendInfo[] EMPTY_FRIENDS = new FriendInfo[0];
-        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
 
         protected List<Scene> m_Scenes = new List<Scene>();
 
@@ -108,7 +110,7 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
             }
         }
 
-        protected IFriendsService FriendsService
+        public IFriendsService FriendsService
         {
             get
             {
@@ -155,7 +157,7 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
                     InitModule(config);
 
                     m_Enabled = true;
-                    m_log.InfoFormat("[FRIENDS MODULE]: {0} enabled.", Name);
+                    m_log.DebugFormat("[FRIENDS MODULE]: {0} enabled.", Name);
                 }
             }            
         }
@@ -200,7 +202,7 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
             if (!m_Enabled)
                 return;
 
-            m_log.DebugFormat("[FRIENDS MODULE]: AddRegion on {0}", Name);
+//            m_log.DebugFormat("[FRIENDS MODULE]: AddRegion on {0}", Name);
 
             m_Scenes.Add(scene);
             scene.RegisterModuleInterface<IFriendsModule>(this);
@@ -211,14 +213,7 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
             scene.EventManager.OnClientLogin += OnClientLogin;
         }
 
-        public virtual void RegionLoaded(Scene scene)
-        {
-            scene.AddCommand(
-                "Friends", this, "friends show cache",
-                "friends show cache [<first-name> <last-name>]",
-                "Show the friends cache for the given user",
-                HandleFriendsShowCacheCommand);
-        }
+        public virtual void RegionLoaded(Scene scene) {}
 
         public void RemoveRegion(Scene scene)
         {
@@ -240,13 +235,13 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
 
         #endregion
 
-        public virtual uint GetFriendPerms(UUID principalID, UUID friendID)
+        public virtual int GetRightsGrantedByFriend(UUID principalID, UUID friendID)
         {
-            FriendInfo[] friends = GetFriends(principalID);
+            FriendInfo[] friends = GetFriendsFromCache(principalID);
             FriendInfo finfo = GetFriend(friends, friendID);
             if (finfo != null)
             {
-                return (uint)finfo.TheirFlags;
+                return finfo.TheirFlags;
             }
 
             return 0;
@@ -254,15 +249,15 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
 
         private void OnNewClient(IClientAPI client)
         {
-            if (client.SceneAgent.IsChildAgent)
-                return;
-
             client.OnInstantMessage += OnInstantMessage;
             client.OnApproveFriendRequest += OnApproveFriendRequest;
             client.OnDenyFriendRequest += OnDenyFriendRequest;
-            client.OnTerminateFriendship += (thisClient, agentID, exfriendID) => RemoveFriendship(thisClient, exfriendID);
-            client.OnGrantUserRights += OnGrantUserRights;
+            client.OnTerminateFriendship += RemoveFriendship;
+            client.OnGrantUserRights += GrantRights;
 
+            // We need to cache information for child agents as well as root agents so that friend edit/move/delete
+            // permissions will work across borders where both regions are on different simulators.
+            //
             // Do not do this asynchronously.  If we do, then subsequent code can outrace CacheFriends() and
             // return misleading results from the still empty friends cache.
             // If we absolutely need to do this asynchronously, then a signalling mechanism is needed so that calls
@@ -283,14 +278,23 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
             UUID agentID = client.AgentId;
             lock (m_Friends)
             {
-                UserFriendData friendsData = new UserFriendData();
-                friendsData.PrincipalID = agentID;
-                friendsData.Friends = GetFriendsFromService(client);
+                UserFriendData friendsData;
+                if (m_Friends.TryGetValue(agentID, out friendsData))
+                {
+                    friendsData.Refcount++;
+                    return false;
+                }
+                else
+                {
+                    friendsData = new UserFriendData();
+                    friendsData.PrincipalID = agentID;
+                    friendsData.Friends = GetFriendsFromService(client);
+                    friendsData.Refcount = 1;
 
-                m_Friends[agentID] = friendsData;
+                    m_Friends[agentID] = friendsData;
+                    return true;
+                }
             }
-
-            return true;
         }
 
         private void OnClientClosed(UUID agentID, Scene scene)
@@ -300,17 +304,23 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
             {
                 // do this for root agents closing out
                 StatusChange(agentID, false);
+            }
 
-                lock (m_Friends)
-                    m_Friends.Remove(agentID);
+            lock (m_Friends)
+            {
+                UserFriendData friendsData;
+                if (m_Friends.TryGetValue(agentID, out friendsData))
+                {
+                    friendsData.Refcount--;
+                    if (friendsData.Refcount <= 0)
+                        m_Friends.Remove(agentID);
+                }
             }
         }
 
         private void OnMakeRootAgent(ScenePresence sp)
         {
-            // FIXME: Ideally, we want to avoid doing this here since it sits the EventManager.OnMakeRootAgent event
-            // is on the critical path for transferring an avatar from one region to another.
-            CacheFriends(sp.ControllingClient);
+            RecacheFriends(sp.ControllingClient);
         }
 
         private void OnClientLogin(IClientAPI client)
@@ -339,18 +349,13 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
 
             // Send the friends online
             List<UUID> online = GetOnlineFriends(agentID);
-            if (online.Count > 0)
-            {
-                m_log.DebugFormat(
-                    "[FRIENDS MODULE]: User {0} in region {1} has {2} friends online",
-                    client.Name, client.Scene.RegionInfo.RegionName, online.Count);
 
+            if (online.Count > 0)
                 client.SendAgentOnline(online.ToArray());
-            }
 
             // Send outstanding friendship offers
             List<string> outstanding = new List<string>();
-            FriendInfo[] friends = GetFriends(agentID);
+            FriendInfo[] friends = GetFriendsFromCache(agentID);
             foreach (FriendInfo fi in friends)
             {
                 if (fi.TheirFlags == -1)
@@ -406,23 +411,30 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
         List<UUID> GetOnlineFriends(UUID userID)
         {
             List<string> friendList = new List<string>();
-            List<UUID> online = new List<UUID>();
 
-            FriendInfo[] friends = GetFriends(userID);
+            FriendInfo[] friends = GetFriendsFromCache(userID);
             foreach (FriendInfo fi in friends)
             {
-                if (((fi.TheirFlags & 1) != 0) && (fi.TheirFlags != -1))
+                if (((fi.TheirFlags & (int)FriendRights.CanSeeOnline) != 0) && (fi.TheirFlags != -1))
                     friendList.Add(fi.Friend);
             }
 
+            List<UUID> online = new List<UUID>();
+
             if (friendList.Count > 0)
                 GetOnlineFriends(userID, friendList, online);
 
+//            m_log.DebugFormat(
+//                "[FRIENDS MODULE]: User {0} has {1} friends online", userID, online.Count);
+
             return online;
         }
 
         protected virtual void GetOnlineFriends(UUID userID, List<string> friendList, /*collector*/ List<UUID> online)
         {
+//            m_log.DebugFormat(
+//                "[FRIENDS MODULE]: Looking for online presence of {0} users for {1}", friendList.Count, userID);
+
             PresenceInfo[] presence = PresenceService.GetAgents(friendList.ToArray());
             foreach (PresenceInfo pi in presence)
             {
@@ -473,13 +485,13 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
         /// <param name="online"></param>
         private void StatusChange(UUID agentID, bool online)
         {
-            FriendInfo[] friends = GetFriends(agentID);
+            FriendInfo[] friends = GetFriendsFromCache(agentID);
             if (friends.Length > 0)
             {
                 List<FriendInfo> friendList = new List<FriendInfo>();
                 foreach (FriendInfo fi in friends)
                 {
-                    if (((fi.MyFlags & 1) != 0) && (fi.TheirFlags != -1))
+                    if (((fi.MyFlags & (int)FriendRights.CanSeeOnline) != 0) && (fi.TheirFlags != -1))
                         friendList.Add(fi);
                 }
 
@@ -545,7 +557,7 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
                 m_log.DebugFormat("[FRIENDS]: {0} ({1}) offered friendship to {2} ({3})", principalID, client.FirstName + client.LastName, friendID, im.fromAgentName);
 
                 // Check that the friendship doesn't exist yet
-                FriendInfo[] finfos = GetFriends(principalID);
+                FriendInfo[] finfos = GetFriendsFromCache(principalID);
                 if (finfos != null)
                 {
                     FriendInfo f = GetFriend(finfos, friendID);
@@ -598,7 +610,7 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
             return (account == null) ? "Unknown" : account.FirstName + " " + account.LastName;
         }
 
-        protected virtual void OnApproveFriendRequest(IClientAPI client, UUID agentID, UUID friendID, List<UUID> callingCardFolders)
+        protected virtual void OnApproveFriendRequest(IClientAPI client, UUID friendID, List<UUID> callingCardFolders)
         {
             m_log.DebugFormat("[FRIENDS]: {0} accepted friendship from {1}", client.AgentId, friendID);
 
@@ -616,7 +628,7 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
             }
 
             // Update the local cache. 
-            CacheFriends(client);
+            RecacheFriends(client);
 
             //
             // Notify the friend
@@ -643,18 +655,18 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
             }
         }
 
-        private void OnDenyFriendRequest(IClientAPI client, UUID agentID, UUID friendID, List<UUID> callingCardFolders)
+        private void OnDenyFriendRequest(IClientAPI client, UUID friendID, List<UUID> callingCardFolders)
         {
-            m_log.DebugFormat("[FRIENDS]: {0} denied friendship to {1}", agentID, friendID);
+            m_log.DebugFormat("[FRIENDS]: {0} denied friendship to {1}", client.AgentId, friendID);
 
-            DeleteFriendship(agentID, friendID);
+            DeleteFriendship(client.AgentId, friendID);
 
             //
             // Notify the friend
             //
 
             // Try local
-            if (LocalFriendshipDenied(agentID, client.Name, friendID))
+            if (LocalFriendshipDenied(client.AgentId, client.Name, friendID))
                 return;
 
             PresenceInfo[] friendSessions = PresenceService.GetAgents(new string[] { friendID.ToString() });
@@ -665,7 +677,7 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
                 {
                     GridRegion region = GridService.GetRegionByUUID(m_Scenes[0].RegionInfo.ScopeID, friendSession.RegionID);
                     if (region != null)
-                        m_FriendsSimConnector.FriendshipDenied(region, agentID, client.Name, friendID);
+                        m_FriendsSimConnector.FriendshipDenied(region, client.AgentId, client.Name, friendID);
                     else
                         m_log.WarnFormat("[FRIENDS]: Could not find region {0} in locating {1}", friendSession.RegionID, friendID);
                 }
@@ -678,7 +690,7 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
                 client.SendAlertMessage("Unable to terminate friendship on this sim.");
 
             // Update local cache
-            CacheFriends(client);
+            RecacheFriends(client);
 
             client.SendTerminateFriend(exfriendID);
 
@@ -702,23 +714,27 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
             }            
         }
 
-        private void OnGrantUserRights(IClientAPI remoteClient, UUID requester, UUID target, int rights)
+        public void GrantRights(IClientAPI remoteClient, UUID friendID, int rights)
         {
-            m_log.DebugFormat("[FRIENDS MODULE]: User {0} changing rights to {1} for friend {2}", requester, rights, target);
+            UUID requester = remoteClient.AgentId;
 
-            FriendInfo[] friends = GetFriends(remoteClient.AgentId);
+            m_log.DebugFormat(
+                "[FRIENDS MODULE]: User {0} changing rights to {1} for friend {2}",
+                requester, rights, friendID);
+
+            FriendInfo[] friends = GetFriendsFromCache(requester);
             if (friends.Length == 0)
             {
                 return;
             }
 
             // Let's find the friend in this user's friend list
-            FriendInfo friend = GetFriend(friends, target);
+            FriendInfo friend = GetFriend(friends, friendID);
 
             if (friend != null) // Found it
             {
                 // Store it on the DB
-                if (!StoreRights(requester, target, rights))
+                if (!StoreRights(requester, friendID, rights))
                 {
                     remoteClient.SendAlertMessage("Unable to grant rights.");
                     return;
@@ -729,17 +745,17 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
                 friend.MyFlags = rights;
 
                 // Always send this back to the original client
-                remoteClient.SendChangeUserRights(requester, target, rights);
+                remoteClient.SendChangeUserRights(requester, friendID, rights);
 
                 //
                 // Notify the friend
                 //
 
                 // Try local
-                if (LocalGrantRights(requester, target, myFlags, rights))
+                if (LocalGrantRights(requester, friendID, myFlags, rights))
                     return;
 
-                PresenceInfo[] friendSessions = PresenceService.GetAgents(new string[] { target.ToString() });
+                PresenceInfo[] friendSessions = PresenceService.GetAgents(new string[] { friendID.ToString() });
                 if (friendSessions != null && friendSessions.Length > 0)
                 {
                     PresenceInfo friendSession = friendSessions[0];
@@ -748,12 +764,14 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
                         GridRegion region = GridService.GetRegionByUUID(m_Scenes[0].RegionInfo.ScopeID, friendSession.RegionID);
                         // TODO: You might want to send the delta to save the lookup
                         // on the other end!!
-                        m_FriendsSimConnector.GrantRights(region, requester, target, myFlags, rights);
+                        m_FriendsSimConnector.GrantRights(region, requester, friendID, myFlags, rights);
                     }
                 }
             }
             else
-                m_log.DebugFormat("[FRIENDS MODULE]: friend {0} not found for {1}", target, requester);
+            {
+                m_log.DebugFormat("[FRIENDS MODULE]: friend {0} not found for {1}", friendID, requester);
+            }
         }
 
         protected virtual FriendInfo GetFriend(FriendInfo[] friends, UUID friendID)
@@ -797,9 +815,8 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
                     ccm.CreateCallingCard(friendID, userID, UUID.Zero);
                 }
 
-
                 // Update the local cache
-                CacheFriends(friendClient);
+                RecacheFriends(friendClient);
 
                 // we're done
                 return true;
@@ -832,7 +849,7 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
                 // the friend in this sim as root agent
                 friendClient.SendTerminateFriend(exfriendID);
                 // update local cache
-                CacheFriends(friendClient);
+                RecacheFriends(friendClient);
                 // we're done
                 return true;
             }
@@ -891,20 +908,14 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
         #endregion
 
         #region Get / Set friends in several flavours
-        /// <summary>
-        /// Get friends from local cache only
-        /// </summary>
-        /// <param name="agentID"></param>
-        /// <returns>
-        /// An empty array if the user has no friends or friends have not been cached.
-        /// </returns>
-        protected FriendInfo[] GetFriends(UUID agentID)
+
+        public FriendInfo[] GetFriendsFromCache(UUID userID)
         {
             UserFriendData friendsData;
 
             lock (m_Friends)
             {
-                if (m_Friends.TryGetValue(agentID, out friendsData))
+                if (m_Friends.TryGetValue(userID, out friendsData))
                     return friendsData.Friends;
             }
 
@@ -922,23 +933,31 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
             // Update local cache
             lock (m_Friends)
             {
-                FriendInfo[] friends = GetFriends(friendID);
+                FriendInfo[] friends = GetFriendsFromCache(friendID);
                 FriendInfo finfo = GetFriend(friends, userID);
                 finfo.TheirFlags = rights;
             }
         }
 
-        protected virtual FriendInfo[] GetFriendsFromService(IClientAPI client)
+        public virtual FriendInfo[] GetFriendsFromService(IClientAPI client)
         {
             return FriendsService.GetFriends(client.AgentId);
         }
 
-        /// <summary>
-        /// Are friends cached on this simulator for a particular user?
-        /// </summary>
-        /// <param name="userID"></param>
-        /// <returns></returns>
-        protected bool AreFriendsCached(UUID userID)
+        protected void RecacheFriends(IClientAPI client)
+        {
+            // FIXME: Ideally, we want to avoid doing this here since it sits the EventManager.OnMakeRootAgent event
+            // is on the critical path for transferring an avatar from one region to another.
+            UUID agentID = client.AgentId;
+            lock (m_Friends)
+            {
+                UserFriendData friendsData;
+                if (m_Friends.TryGetValue(agentID, out friendsData))
+                    friendsData.Friends = GetFriendsFromService(client);
+            }
+        }
+
+        public bool AreFriendsCached(UUID userID)
         {
             lock (m_Friends)
                 return m_Friends.ContainsKey(userID);
@@ -957,8 +976,8 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
 
         protected virtual void StoreFriendships(UUID agentID, UUID friendID)
         {
-            FriendsService.StoreFriend(agentID.ToString(), friendID.ToString(), 1);
-            FriendsService.StoreFriend(friendID.ToString(), agentID.ToString(), 1);
+            FriendsService.StoreFriend(agentID.ToString(), friendID.ToString(), (int)FriendRights.CanSeeOnline);
+            FriendsService.StoreFriend(friendID.ToString(), agentID.ToString(), (int)FriendRights.CanSeeOnline);
         }
 
         protected virtual bool DeleteFriendship(UUID agentID, UUID exfriendID)
@@ -969,61 +988,5 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
         }
 
         #endregion
-
-        protected void HandleFriendsShowCacheCommand(string module, string[] cmd)
-        {
-            if (cmd.Length != 5)
-            {
-                MainConsole.Instance.OutputFormat("Usage: friends show cache [<first-name> <last-name>]");
-                return;
-            }
-
-            string firstName = cmd[3];
-            string lastName = cmd[4];
-
-            IUserManagement umModule = m_Scenes[0].RequestModuleInterface<IUserManagement>();
-            UUID userId = umModule.GetUserIdByName(firstName, lastName);
-
-//            UserAccount ua
-//                = m_Scenes[0].UserAccountService.GetUserAccount(m_Scenes[0].RegionInfo.ScopeID, firstName, lastName);
-
-            if (userId == UUID.Zero)
-            {
-                MainConsole.Instance.OutputFormat("No such user as {0} {1}", firstName, lastName);
-                return;
-            }
-
-            if (!AreFriendsCached(userId))
-            {
-                MainConsole.Instance.OutputFormat("No friends cached on this simulator for {0} {1}", firstName, lastName);
-                return;
-            }
-
-            MainConsole.Instance.OutputFormat("Cached friends for {0} {1}:", firstName, lastName);
-
-            MainConsole.Instance.OutputFormat("UUID\n");
-
-            FriendInfo[] friends = GetFriends(userId);
-
-            foreach (FriendInfo friend in friends)
-            {
-//                MainConsole.Instance.OutputFormat(friend.PrincipalID.ToString());
-
-//                string friendFirstName, friendLastName;
-//
-//                UserAccount friendUa
-//                    = m_Scenes[0].UserAccountService.GetUserAccount(m_Scenes[0].RegionInfo.ScopeID, friend.PrincipalID);
-
-                UUID friendId;
-                string friendName;
-
-                if (UUID.TryParse(friend.Friend, out friendId))
-                    friendName = umModule.GetUserName(friendId);
-                else
-                    friendName = friend.Friend;
-
-                MainConsole.Instance.OutputFormat("{0} {1} {2}", friendName, friend.MyFlags, friend.TheirFlags);
-            }
-        }
     }
 }
diff --git a/OpenSim/Region/CoreModules/Avatar/Friends/HGFriendsModule.cs b/OpenSim/Region/CoreModules/Avatar/Friends/HGFriendsModule.cs
index 7bc3018..9a6d277 100644
--- a/OpenSim/Region/CoreModules/Avatar/Friends/HGFriendsModule.cs
+++ b/OpenSim/Region/CoreModules/Avatar/Friends/HGFriendsModule.cs
@@ -105,12 +105,12 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
 
         #endregion
 
-        protected override void OnApproveFriendRequest(IClientAPI client, UUID agentID, UUID friendID, List<UUID> callingCardFolders)
+        protected override void OnApproveFriendRequest(IClientAPI client, UUID friendID, List<UUID> callingCardFolders)
         {
             // Update the local cache. Yes, we need to do it right here
             // because the HGFriendsService placed something on the DB
             // from under the sim
-            base.OnApproveFriendRequest(client, agentID, friendID, callingCardFolders);
+            base.OnApproveFriendRequest(client, friendID, callingCardFolders);
         }
 
         protected override bool CacheFriends(IClientAPI client)
@@ -121,7 +121,7 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
             {
                 UUID agentID = client.AgentId;
                 // we do this only for the root agent
-                if (!client.SceneAgent.IsChildAgent)
+                if (m_Friends[agentID].Refcount == 1)
                 {
                     // We need to preload the user management cache with the names
                     // of foreign friends, just like we do with SOPs' creators
@@ -163,7 +163,7 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
                     UserAccount account = m_Scenes[0].UserAccountService.GetUserAccount(client.Scene.RegionInfo.ScopeID, client.AgentId);
                     if (account == null) // foreign
                     {
-                        FriendInfo[] friends = GetFriends(client.AgentId);
+                        FriendInfo[] friends = GetFriendsFromCache(client.AgentId);
                         foreach (FriendInfo f in friends)
                         {
                             client.SendChangeUserRights(new UUID(f.Friend), client.AgentId, f.TheirFlags);
@@ -300,8 +300,7 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
             return null;
         }
 
-
-        protected override FriendInfo[] GetFriendsFromService(IClientAPI client)
+        public override FriendInfo[] GetFriendsFromService(IClientAPI client)
         {
 //            m_log.DebugFormat("[HGFRIENDS MODULE]: Entering GetFriendsFromService for {0}", client.Name);
             Boolean agentIsLocal = true;
@@ -346,7 +345,7 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
 
             if (agentIsLocal) // agent is local, friend is foreigner
             {
-                FriendInfo[] finfos = GetFriends(agentID);
+                FriendInfo[] finfos = GetFriendsFromCache(agentID);
                 FriendInfo finfo = GetFriend(finfos, friendID);
                 if (finfo != null)
                 {
@@ -426,14 +425,14 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
                 agentClientCircuit = ((Scene)(agentClient.Scene)).AuthenticateHandler.GetAgentCircuitData(agentClient.CircuitCode);
                 agentUUI = Util.ProduceUserUniversalIdentifier(agentClientCircuit);
                 agentFriendService = agentClientCircuit.ServiceURLs["FriendsServerURI"].ToString();
-                CacheFriends(agentClient);
+                RecacheFriends(agentClient);
             }
             if (friendClient != null)
             {
                 friendClientCircuit = ((Scene)(friendClient.Scene)).AuthenticateHandler.GetAgentCircuitData(friendClient.CircuitCode);
                 friendUUI = Util.ProduceUserUniversalIdentifier(friendClientCircuit);
                 friendFriendService = friendClientCircuit.ServiceURLs["FriendsServerURI"].ToString();
-                CacheFriends(friendClient);
+                RecacheFriends(friendClient);
             }
 
             m_log.DebugFormat("[HGFRIENDS MODULE] HG Friendship! thisUUI={0}; friendUUI={1}; foreignThisFriendService={2}; foreignFriendFriendService={3}",
@@ -453,7 +452,7 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
                 bool confirming = false;
                 if (friendUUI == string.Empty)
                 {
-                    finfos = GetFriends(agentID);
+                    finfos = GetFriendsFromCache(agentID);
                     foreach (FriendInfo finfo in finfos)
                     {
                         if (finfo.TheirFlags == -1)
@@ -546,7 +545,7 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
             // Delete any previous friendship relations
             FriendInfo[] finfos = null;
             FriendInfo f = null;
-            finfos = GetFriends(a1);
+            finfos = GetFriendsFromCache(a1);
             if (finfos != null)
             {
                 f = GetFriend(finfos, a2);
@@ -558,7 +557,7 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
                 }
             }
 
-            finfos = GetFriends(a2);
+            finfos = GetFriendsFromCache(a2);
             if (finfos != null)
             {
                 f = GetFriend(finfos, a1);
@@ -595,7 +594,7 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
             if (agentIsLocal) // agent is local, 'friend' is foreigner
             {
                 // We need to look for its information in the friends list itself
-                FriendInfo[] finfos = GetFriends(agentID);
+                FriendInfo[] finfos = GetFriendsFromCache(agentID);
                 FriendInfo finfo = GetFriend(finfos, exfriendID);
                 if (finfo != null)
                 {
@@ -639,7 +638,7 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
         private string GetUUI(UUID localUser, UUID foreignUser)
         {
             // Let's see if the user is here by any chance
-            FriendInfo[] finfos = GetFriends(localUser);
+            FriendInfo[] finfos = GetFriendsFromCache(localUser);
             if (finfos != EMPTY_FRIENDS) // friend is here, cool
             {
                 FriendInfo finfo = GetFriend(finfos, foreignUser);
diff --git a/OpenSim/Region/CoreModules/Avatar/Friends/Tests/FriendModuleTests.cs b/OpenSim/Region/CoreModules/Avatar/Friends/Tests/FriendModuleTests.cs
index 682fbab..45b4264 100644
--- a/OpenSim/Region/CoreModules/Avatar/Friends/Tests/FriendModuleTests.cs
+++ b/OpenSim/Region/CoreModules/Avatar/Friends/Tests/FriendModuleTests.cs
@@ -30,6 +30,7 @@ using System.Collections.Generic;
 using Nini.Config;
 using NUnit.Framework;
 using OpenMetaverse;
+using OpenSim.Data.Null;
 using OpenSim.Framework;
 using OpenSim.Region.CoreModules.Avatar.Friends;
 using OpenSim.Region.Framework.Scenes;
@@ -44,9 +45,30 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends.Tests
         private FriendsModule m_fm;
         private TestScene m_scene;
 
+        [TestFixtureSetUp]
+        public void FixtureInit()
+        {
+            // Don't allow tests to be bamboozled by asynchronous events.  Execute everything on the same thread.
+            Util.FireAndForgetMethod = FireAndForgetMethod.RegressionTest;
+        }
+
+        [TestFixtureTearDown]
+        public void TearDown()
+        {
+            // We must set this back afterwards, otherwise later tests will fail since they're expecting multiple
+            // threads.  Possibly, later tests should be rewritten so none of them require async stuff (which regression
+            // tests really shouldn't).
+            Util.FireAndForgetMethod = Util.DefaultFireAndForgetMethod;
+        }
+
         [SetUp]
         public void Init()
         {
+            // We must clear friends data between tests since Data.Null holds it in static properties.  This is necessary
+            // so that different services and simulator can share the data in standalone mode.  This is pretty horrible
+            // effectively the statics are global variables.
+            NullFriendsData.Clear();
+                
             IConfigSource config = new IniConfigSource();
             config.AddConfig("Modules");
             // Not strictly necessary since FriendsModule assumes it is the default (!)
@@ -62,7 +84,7 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends.Tests
         }
 
         [Test]
-        public void TestNoFriends()
+        public void TestLoginWithNoFriends()
         {
             TestHelpers.InMethod();
 //            log4net.Config.XmlConfigurator.Configure();
@@ -76,6 +98,76 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends.Tests
         }
 
         [Test]
+        public void TestLoginWithOfflineFriends()
+        {
+            TestHelpers.InMethod();
+//            log4net.Config.XmlConfigurator.Configure();
+
+            UUID user1Id = TestHelpers.ParseTail(0x1);
+            UUID user2Id = TestHelpers.ParseTail(0x2);
+
+//            UserAccountHelpers.CreateUserWithInventory(m_scene, user1Id);
+//            UserAccountHelpers.CreateUserWithInventory(m_scene, user2Id);
+//
+//            m_fm.AddFriendship(user1Id, user2Id);
+
+            ScenePresence sp1 = SceneHelpers.AddScenePresence(m_scene, user1Id);
+            ScenePresence sp2 = SceneHelpers.AddScenePresence(m_scene, user2Id);
+
+            m_fm.AddFriendship(sp1.ControllingClient, user2Id);
+
+            // Not necessary for this test.  CanSeeOnline is automatically granted.
+//            m_fm.GrantRights(sp1.ControllingClient, user2Id, (int)FriendRights.CanSeeOnline);
+
+            // We must logout from the client end so that the presence service is correctly updated by the presence
+            // detector.  This is listening to the OnConnectionClosed event on the client.
+            ((TestClient)sp1.ControllingClient).Logout();
+            ((TestClient)sp2.ControllingClient).Logout();
+//            m_scene.RemoveClient(sp1.UUID, true);
+//            m_scene.RemoveClient(sp2.UUID, true);
+
+            ScenePresence sp1Redux = SceneHelpers.AddScenePresence(m_scene, user1Id);
+
+            // We don't expect to receive notifications of offline friends on login, just online.
+            Assert.That(((TestClient)sp1Redux.ControllingClient).ReceivedOfflineNotifications.Count, Is.EqualTo(0));
+            Assert.That(((TestClient)sp1Redux.ControllingClient).ReceivedOnlineNotifications.Count, Is.EqualTo(0));
+        }
+
+        [Test]
+        public void TestLoginWithOnlineFriends()
+        {
+            TestHelpers.InMethod();
+//            log4net.Config.XmlConfigurator.Configure();
+
+            UUID user1Id = TestHelpers.ParseTail(0x1);
+            UUID user2Id = TestHelpers.ParseTail(0x2);
+
+//            UserAccountHelpers.CreateUserWithInventory(m_scene, user1Id);
+//            UserAccountHelpers.CreateUserWithInventory(m_scene, user2Id);
+//
+//            m_fm.AddFriendship(user1Id, user2Id);
+
+            ScenePresence sp1 = SceneHelpers.AddScenePresence(m_scene, user1Id);
+            ScenePresence sp2 = SceneHelpers.AddScenePresence(m_scene, user2Id);
+
+            m_fm.AddFriendship(sp1.ControllingClient, user2Id);
+
+            // Not necessary for this test.  CanSeeOnline is automatically granted.
+//            m_fm.GrantRights(sp1.ControllingClient, user2Id, (int)FriendRights.CanSeeOnline);
+
+            // We must logout from the client end so that the presence service is correctly updated by the presence
+            // detector.  This is listening to the OnConnectionClosed event on the client.
+//            ((TestClient)sp1.ControllingClient).Logout();
+            ((TestClient)sp2.ControllingClient).Logout();
+//            m_scene.RemoveClient(user2Id, true);
+
+            ScenePresence sp2Redux = SceneHelpers.AddScenePresence(m_scene, user2Id);
+
+            Assert.That(((TestClient)sp2Redux.ControllingClient).ReceivedOfflineNotifications.Count, Is.EqualTo(0));
+            Assert.That(((TestClient)sp2Redux.ControllingClient).ReceivedOnlineNotifications.Count, Is.EqualTo(1));
+        }
+
+        [Test]
         public void TestAddFriendshipWhileOnline()
         {
             TestHelpers.InMethod();