* With Grid Comms up in the air.. I decided have the friends module update you when your friends come online if they're at least a child agent on the sim. offline status works the same also. So does Instant Message.

* This is until Grid Comms matures a bit more on this.
* This should also work in Standalone as it uses the IUserData interface.

OpenSim/Region/Communications/OGS1/OGS1UserServices.cs

@@ -516,7 +516,7 @@ namespace OpenSim.Region.Communications.OGS1
                 IList parameters = new ArrayList();
                 parameters.Add(param);
                 XmlRpcRequest req = new XmlRpcRequest("get_user_friend_list", parameters);
-                XmlRpcResponse resp = req.Send(m_parent.NetworkServersInfo.UserURL, 3000);
+                XmlRpcResponse resp = req.Send(m_parent.NetworkServersInfo.UserURL, 8000);
                 Hashtable respData = (Hashtable) resp.Value;
 
                 if (respData.Contains("avcount")) 

OpenSim/Region/Environment/Modules/FriendsModule.cs

@@ -27,6 +27,7 @@
 using System;
 using System.Collections.Generic;
 using libsecondlife;
+using libsecondlife.Packets;
 using Nini.Config;
 using Nwc.XmlRpc;
 using OpenSim.Framework;
@@ -45,6 +46,8 @@ namespace OpenSim.Region.Environment.Modules
 
         Dictionary<LLUUID, LLUUID> m_pendingFriendRequests = new Dictionary<LLUUID, LLUUID>();
 
+        Dictionary<LLUUID, List<FriendListItem>> FriendLists = new Dictionary<LLUUID, List<FriendListItem>>();
+
         public void Initialise(Scene scene, IConfigSource config)
         {
             lock (m_scene)
@@ -78,11 +81,92 @@ namespace OpenSim.Region.Environment.Modules
             // Generated by LoginService.  The friends are retreived from the database by the UserManager
 
             // Subscribe to instant messages
+           
             client.OnInstantMessage += OnInstantMessage;
             client.OnApproveFriendRequest += OnApprovedFriendRequest;
             client.OnDenyFriendRequest += OnDenyFriendRequest;
             client.OnTerminateFriendship += OnTerminateFriendship;
 
+            List<FriendListItem> fl = new List<FriendListItem>();
+            lock (FriendLists)
+            {
+                if (FriendLists.ContainsKey(client.AgentId))
+                {
+                    fl = FriendLists[client.AgentId];
+                }
+                else 
+                {
+                    fl = m_scene[0].GetFriendList(client.AgentId);
+                    lock (FriendLists)
+                    {
+                        if (!FriendLists.ContainsKey(client.AgentId))
+                            FriendLists.Add(client.AgentId, fl);
+                    }
+                }
+            }
+            
+            List<LLUUID> UpdateUsers = new List<LLUUID>();
+
+            foreach (FriendListItem f in fl)
+            {   
+                if (m_rootAgents.ContainsKey(f.Friend))
+                {
+                    if (f.onlinestatus == false)
+                    {
+                        UpdateUsers.Add(f.Friend);
+                        f.onlinestatus = true;
+                    }
+                }
+            }
+            foreach (LLUUID user in UpdateUsers)
+            {
+                ScenePresence av = GetPresenceFromAgentID(user);
+                if (av != null)
+                {
+                    List<FriendListItem> usrfl = new List<FriendListItem>();
+
+                    lock (FriendLists)
+                    {
+                        usrfl = FriendLists[user];
+                    }
+
+                    lock (usrfl)
+                    {
+                        foreach (FriendListItem fli in usrfl)
+                        {
+                            if (fli.Friend == client.AgentId)
+                            {
+                                fli.onlinestatus = true;
+                                OnlineNotificationPacket onp = new OnlineNotificationPacket();
+                                OnlineNotificationPacket.AgentBlockBlock[] onpb = new OnlineNotificationPacket.AgentBlockBlock[1];
+                                OnlineNotificationPacket.AgentBlockBlock onpbl = new OnlineNotificationPacket.AgentBlockBlock();
+                                onpbl.AgentID = client.AgentId;
+                                onpb[0] = onpbl;
+                                onp.AgentBlock = onpb;
+                                av.ControllingClient.OutPacket(onp, ThrottleOutPacketType.Task);
+                            }
+                        }
+                    }
+                }
+            }
+
+            if (UpdateUsers.Count > 0)
+            {
+                OnlineNotificationPacket onp = new OnlineNotificationPacket();
+                OnlineNotificationPacket.AgentBlockBlock[] onpb = new OnlineNotificationPacket.AgentBlockBlock[UpdateUsers.Count];
+                for (int i = 0; i < UpdateUsers.Count; i++)
+                {
+                    OnlineNotificationPacket.AgentBlockBlock onpbl = new OnlineNotificationPacket.AgentBlockBlock();
+                    onpbl.AgentID = UpdateUsers[i];
+                    onpb[i] = onpbl;
+                }
+                onp.AgentBlock = onpb;
+                client.OutPacket(onp, ThrottleOutPacketType.Task);
+            }
+           
+
+
+
         }
 
         private void ClientLoggedOut(LLUUID AgentId)
@@ -95,6 +179,60 @@ namespace OpenSim.Region.Environment.Modules
                         m_log.Info("[FRIEND]: Removing " + AgentId  + ". Agent logged out.");
                 }
             }
+            List<FriendListItem> lfli = new List<FriendListItem>();
+            lock (FriendLists)
+            {
+                if (FriendLists.ContainsKey(AgentId))
+                {
+                    lfli = FriendLists[AgentId];
+                }
+            }
+            List<LLUUID> updateUsers = new List<LLUUID>();
+            foreach (FriendListItem fli in lfli)
+            {
+                if (fli.onlinestatus = true)
+                {
+                    updateUsers.Add(fli.Friend);
+                }
+            }
+            for (int i = 0; i < updateUsers.Count; i++)
+            {
+                List<FriendListItem> flfli = new List<FriendListItem>();
+                lock (FriendLists)
+                {
+                    if (FriendLists.ContainsKey(updateUsers[i]))
+                        flfli = FriendLists[updateUsers[i]];
+                }
+                for (int j = 0; j < flfli.Count; j++)
+                {
+                    if (flfli[i].Friend == AgentId)
+                    {
+                        flfli[i].onlinestatus = false;
+                    }
+
+                }
+
+            }
+            for (int i = 0; i < updateUsers.Count; i++)
+            {
+                ScenePresence av = GetPresenceFromAgentID(updateUsers[i]);
+                if (av != null)
+                {
+
+                    OfflineNotificationPacket onp = new OfflineNotificationPacket();
+                    OfflineNotificationPacket.AgentBlockBlock[] onpb = new OfflineNotificationPacket.AgentBlockBlock[1];
+                    OfflineNotificationPacket.AgentBlockBlock onpbl = new OfflineNotificationPacket.AgentBlockBlock();
+                    onpbl.AgentID = AgentId;
+                    onpb[0] = onpbl;
+                    onp.AgentBlock = onpb;
+                    av.ControllingClient.OutPacket(onp, ThrottleOutPacketType.Task);
+                }
+            }
+            lock (FriendLists)
+            {
+                FriendLists.Remove(AgentId);
+            }
+
         }
 
         private void AvatarEnteringParcel(ScenePresence avatar, int localLandID, LLUUID regionID)

OpenSim/Region/Environment/Modules/InstantMessageModule.cs

@@ -82,6 +82,7 @@ namespace OpenSim.Region.Environment.Modules
             // Don't send a Friend Dialog IM with a LLUUID.Zero session.
             if (!(dialogHandledElsewhere && imSessionID == LLUUID.Zero))
             {
+                // Try root avatar only first
                 foreach (Scene scene in m_scenes)
                 {
                     if (scene.Entities.ContainsKey(toAgentID) && scene.Entities[toAgentID] is ScenePresence)
@@ -98,8 +99,27 @@ namespace OpenSim.Region.Environment.Modules
                         }
                     }
                 }
+
+                // try child avatar second
+                foreach (Scene scene in m_scenes)
+                {
+                    if (scene.Entities.ContainsKey(toAgentID) && scene.Entities[toAgentID] is ScenePresence)
+                    {
+                        // Local message
+                        ScenePresence user = (ScenePresence)scene.Entities[toAgentID];
+                        
+                        user.ControllingClient.SendInstantMessage(fromAgentID, fromAgentSession, message,
+                                                                  toAgentID, imSessionID, fromAgentName, dialog,
+                                                                  timestamp);
+                        // Message sent
+                        return;
+                        
+                    }
+                }
+
             }
 
+
             // Still here, try send via Grid
             // TODO
         }

OpenSim/Region/Environment/Scenes/Scene.cs

@@ -2145,8 +2145,15 @@ namespace OpenSim.Region.Environment.Scenes
                 m_statsReporter.SetObjectCapacity(objects);
             }
             objectCapacity = objects;
+            
         }
 
+        public List<FriendListItem> GetFriendList(LLUUID avatarID)
+        {
+            return CommsManager.GetUserFriendList(avatarID);
+        }
+        
+
         #endregion
 
         #region Other Methods