* EXPERIMENTAL ROUGH DRAFT: First rough implementation of avatar to avatar item giving

* Now you can drag an object from your inventory and give it to another avatar
* !!! Use at your own risk !!!  Many things are unimplemented as of yet, including permissions (the person receiving your item can probably do absolutely everything with it)
* Also, items for the receiving end up in their root folder rather than the objects folder

3 files changed, 246 insertions, 7 deletions

diff --git a/OpenSim/Region/Environment/Modules/InstantMessageModule.cs b/OpenSim/Region/Environment/Modules/InstantMessageModule.cs
index 53d9fd9..6f7235e 100644
--- a/OpenSim/Region/Environment/Modules/InstantMessageModule.cs
+++ b/OpenSim/Region/Environment/Modules/InstantMessageModule.cs
@@ -70,13 +70,17 @@ namespace OpenSim.Region.Environment.Modules
                                       uint ParentEstateID, LLVector3 Position, LLUUID RegionID, 
                                       byte[] binaryBucket)
         {
-            bool FriendDialog = ((dialog == (byte)38) || (dialog == (byte)39) || (dialog == (byte)40));
+            bool dialogHandledElsewhere 
+                = ((dialog == (byte)38) || (dialog == (byte)39) || (dialog == (byte)40)
+                   || dialog == (byte)InstantMessageDialog.InventoryOffered
+                   || dialog == (byte)InstantMessageDialog.InventoryAccepted
+                   || dialog == (byte)InstantMessageDialog.InventoryDeclined);
 
             // IM dialogs need to be pre-processed and have their sessionID filled by the server
             // so the sim can match the transaction on the return packet.
             
             // Don't send a Friend Dialog IM with a LLUUID.Zero session.
-            if (!(FriendDialog && imSessionID == LLUUID.Zero))
+            if (!(dialogHandledElsewhere && imSessionID == LLUUID.Zero))
             {
                 foreach (Scene scene in m_scenes)
                 {
diff --git a/OpenSim/Region/Environment/Modules/InventoryModule.cs b/OpenSim/Region/Environment/Modules/InventoryModule.cs
index a0f3832..eadbb4f 100644
--- a/OpenSim/Region/Environment/Modules/InventoryModule.cs
+++ b/OpenSim/Region/Environment/Modules/InventoryModule.cs
@@ -25,7 +25,13 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+using System;
+using System.Collections.Generic;
+
+using libsecondlife;
 using Nini.Config;
+
+using OpenSim.Framework;
 using OpenSim.Region.Environment.Interfaces;
 using OpenSim.Region.Environment.Scenes;
 
@@ -33,11 +39,22 @@ namespace OpenSim.Region.Environment.Modules
 {
     public class InventoryModule : IRegionModule
     {
+        private static readonly log4net.ILog m_log 
+            = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType); 
+        
         private Scene m_scene;
+        
+        /// <summary>
+        /// We need to keep track of the pending item offers between clients since the itemId offered only
+        /// occurs in the initial offer message, not the accept message.  So this dictionary links
+        /// IM Session Ids to ItemIds
+        /// </summary>
+        private IDictionary<LLUUID, LLUUID> m_pendingOffers = new Dictionary<LLUUID, LLUUID>();
 
         public void Initialise(Scene scene, IConfigSource config)
-        {
+        {            
             m_scene = scene;
+            scene.EventManager.OnNewClient += OnNewClient;            
         }
 
         public void PostInitialise()
@@ -57,5 +74,144 @@ namespace OpenSim.Region.Environment.Modules
         {
             get { return false; }
         }
+        
+        private void OnNewClient(IClientAPI client)
+        {
+            // Inventory giving is conducted via instant message
+            client.OnInstantMessage += OnInstantMessage;
+        }
+        
+        private void OnInstantMessage(IClientAPI client, LLUUID fromAgentID,
+                                      LLUUID fromAgentSession, LLUUID toAgentID,
+                                      LLUUID imSessionID, uint timestamp, string fromAgentName,
+                                      string message, byte dialog, bool fromGroup, byte offline, 
+                                      uint ParentEstateID, LLVector3 Position, LLUUID RegionID, 
+                                      byte[] binaryBucket)
+        {
+            if (dialog == (byte)InstantMessageDialog.InventoryOffered)
+            {
+                m_log.DebugFormat(
+                     "[AGENT INVENTORY]: Routing inventory offering message from {0}, {1} to {2}", 
+                     client.AgentId, client.Name, toAgentID);
+                
+                if (m_scene.Entities.ContainsKey(toAgentID) && m_scene.Entities[toAgentID] is ScenePresence)
+                {
+                    ScenePresence user = (ScenePresence)m_scene.Entities[toAgentID];
+                    
+                    if (!user.IsChildAgent)
+                    {
+                        //byte[] rawId = new byte[16];
+                        
+                        // First byte of the array is probably the item type
+                        // Next 16 bytes are the UUID
+                        //Array.Copy(binaryBucket, 1, rawId, 0, 16); 
+                                                                  
+                        //LLUUID itemId = new LLUUID(new Guid(rawId));
+                        LLUUID itemId = new LLUUID(binaryBucket, 1);
+                        
+                        m_log.DebugFormat(
+                             "[AGENT INVENTORY]: ItemId for giving is {0}", itemId);
+                        
+                        m_pendingOffers[imSessionID] = itemId;
+                        
+                        user.ControllingClient.SendInstantMessage(
+                            fromAgentID, fromAgentSession, message, toAgentID, imSessionID, fromAgentName, 
+                            dialog, timestamp, binaryBucket);
+                        
+                        return;
+                    }
+                    else
+                    {
+                        m_log.WarnFormat(
+                             "[AGENT INVENTORY]: Agent {0} targeted for inventory give by {1}, {2} of {3} was a child agent!", 
+                             toAgentID, client.AgentId, client.Name, message);
+                    }
+                }    
+                else
+                {
+                    m_log.WarnFormat(
+                         "[AGENT INVENTORY]: Could not find agent {0} for user {1}, {2} to give {3}",
+                         toAgentID, client.AgentId, client.Name, message);
+                }
+            }
+            else if (dialog == (byte)InstantMessageDialog.InventoryAccepted)
+            {
+                m_log.DebugFormat(
+                     "[AGENT INVENTORY]: Routing inventory accepted message from {0}, {1} to {2}", 
+                     client.AgentId, client.Name, toAgentID);
+                
+                if (m_scene.Entities.ContainsKey(toAgentID) && m_scene.Entities[toAgentID] is ScenePresence)
+                {
+                    ScenePresence user = (ScenePresence)m_scene.Entities[toAgentID];
+                    
+                    if (!user.IsChildAgent)
+                    {
+                        user.ControllingClient.SendInstantMessage(
+                            fromAgentID, fromAgentSession, message, toAgentID, imSessionID, fromAgentName, 
+                            dialog, timestamp, binaryBucket);
+                        
+                        if (m_pendingOffers.ContainsKey(imSessionID))
+                        {                                                
+                            m_log.DebugFormat(
+                                 "[AGENT INVENTORY]: Accepted item id {0}", m_pendingOffers[imSessionID]);
+                            
+                            // Since the message originates from the accepting client, the toAgentID is
+                            // the agent giving the item.
+                            m_scene.GiveInventoryItem(client, toAgentID, m_pendingOffers[imSessionID]);
+                            
+                            m_pendingOffers.Remove(imSessionID);
+                        }
+                        else
+                        {
+                            m_log.ErrorFormat(
+                                 "[AGENT INVENTORY]: Could not find an item associated with session id {0} to accept", 
+                                 imSessionID);
+                        }
+                                                
+                        return;
+                    }
+                    else
+                    {
+                        m_log.WarnFormat(
+                             "[AGENT INVENTORY]: Agent {0} targeted for inventory give by {1}, {2} of {3} was a child agent!", 
+                             toAgentID, client.AgentId, client.Name, message);
+                    }
+                }    
+                else
+                {
+                    m_log.WarnFormat(
+                         "[AGENT INVENTORY]: Could not find agent {0} for user {1}, {2} to give {3}",
+                         toAgentID, client.AgentId, client.Name, message);
+                }                
+            }
+            else if (dialog == (byte)InstantMessageDialog.InventoryDeclined)
+            {
+                if (m_scene.Entities.ContainsKey(toAgentID) && m_scene.Entities[toAgentID] is ScenePresence)
+                {
+                    ScenePresence user = (ScenePresence)m_scene.Entities[toAgentID];
+                    
+                    if (!user.IsChildAgent)
+                    {
+                        user.ControllingClient.SendInstantMessage(
+                            fromAgentID, fromAgentSession, message, toAgentID, imSessionID, fromAgentName, 
+                            dialog, timestamp, binaryBucket);
+                        
+                        if (m_pendingOffers.ContainsKey(imSessionID))
+                        {                                                
+                            m_log.DebugFormat(
+                                 "[AGENT INVENTORY]: Declined item id {0}", m_pendingOffers[imSessionID]);
+                            
+                            m_pendingOffers.Remove(imSessionID);
+                        }
+                        else
+                        {
+                            m_log.ErrorFormat(
+                                 "[AGENT INVENTORY]: Could not find an item associated with session id {0} to decline", 
+                                 imSessionID);
+                        } 
+                    }
+                }
+            }                
+        }
     }
 }
diff --git a/OpenSim/Region/Environment/Scenes/Scene.Inventory.cs b/OpenSim/Region/Environment/Scenes/Scene.Inventory.cs
index 2b8f344..f6f1367 100644
--- a/OpenSim/Region/Environment/Scenes/Scene.Inventory.cs
+++ b/OpenSim/Region/Environment/Scenes/Scene.Inventory.cs
@@ -286,10 +286,89 @@ namespace OpenSim.Region.Environment.Scenes
                     "[AGENT INVENTORY]: Agent ID " + remoteClient.AgentId + " not found for an inventory item update.");
             }
         }
+        
+        /// <summary>
+        /// Give an inventory item from one avatar to another
+        /// </summary>
+        /// <param name="recipientClient"></param>
+        /// <param name="sender"></param>
+        /// <param name="itemId"></param>
+        public void GiveInventoryItem(IClientAPI recipientClient, LLUUID senderId, LLUUID itemId)
+        {
+            // Retrieve the item from the sender
+            CachedUserInfo senderUserInfo = CommsManager.UserProfileCacheService.GetUserDetails(senderId);            
+            
+            if (senderUserInfo == null)
+            {
+                m_log.ErrorFormat(
+                     "[AGENT INVENTORY]: Failed to find sending user {0} for item {1}", senderId, itemId);
+                
+                return;
+            }
+
+            if (senderUserInfo.RootFolder != null)
+            {
+                InventoryItemBase item = senderUserInfo.RootFolder.HasItem(itemId);
+                if (item != null)
+                {             
+                    // TODO get recipient's root folder
+                    CachedUserInfo recipientUserInfo 
+                        = CommsManager.UserProfileCacheService.GetUserDetails(recipientClient.AgentId);                    
+                    
+                    if (recipientUserInfo != null)
+                    {
+                        // Insert a copy of the item into the recipient                    
+                        InventoryItemBase itemCopy = new InventoryItemBase();
+                        itemCopy.avatarID = recipientClient.AgentId;
+                        itemCopy.creatorsID = recipientClient.AgentId;
+                        itemCopy.inventoryID = LLUUID.Random();
+                        itemCopy.assetID = item.assetID;
+                        itemCopy.inventoryDescription = item.inventoryDescription;
+                        itemCopy.inventoryName = item.inventoryName;
+                        itemCopy.assetType = item.assetType;
+                        itemCopy.invType = item.invType;
+                        itemCopy.parentFolderID = recipientUserInfo.RootFolder.folderID;
+                        itemCopy.inventoryCurrentPermissions = 2147483647;
+                        itemCopy.inventoryNextPermissions = 2147483647;
+                        itemCopy.inventoryEveryOnePermissions = item.inventoryEveryOnePermissions;
+                        itemCopy.inventoryBasePermissions = item.inventoryBasePermissions;
+                        itemCopy.inventoryCurrentPermissions = item.inventoryCurrentPermissions;
+
+                        recipientUserInfo.AddItem(recipientClient.AgentId, itemCopy);
+                        
+                        // Let the recipient client know about this new item
+                        recipientClient.SendBulkUpdateInventory(itemCopy);                         
+                    }
+                    else
+                    {
+                        m_log.ErrorFormat(
+                            "[AGENT INVENTORY]: Could not find userinfo for recipient user {0}, {1} of item {2}, {3} from {4}", 
+                            recipientClient.Name, recipientClient.AgentId, item.inventoryName, 
+                            item.inventoryID, senderId);
+                    }
+                }
+                else
+                {
+                    m_log.ErrorFormat(
+                        "[AGENT INVENTORY]: Failed to find item {0} to give to {1}", itemId, senderId);
+                    
+                    return;
+                }
+            }
+            else
+            {
+                m_log.Error("[AGENT INVENTORY]: Failed to find item " + itemId.ToString() + ", no root folder");
+                return;
+            }                       
+        }
 
         public void CopyInventoryItem(IClientAPI remoteClient, uint callbackID, LLUUID oldAgentID, LLUUID oldItemID,
                                       LLUUID newFolderID, string newName)
         {
+            m_log.DebugFormat(
+                "[AGENT INVENTORY]: CopyInventoryItem received by {0} with oldAgentID {1}, oldItemID {2}, new FolderID {3}, newName {4}",
+                remoteClient.AgentId, oldAgentID, oldItemID, newFolderID, newName);
+            
             InventoryItemBase item = CommsManager.UserProfileCacheService.libraryRoot.HasItem(oldItemID);
             if (item == null)
             {
@@ -349,9 +428,8 @@ namespace OpenSim.Region.Environment.Scenes
         public void MoveInventoryItem(IClientAPI remoteClient, LLUUID folderID, LLUUID itemID, int length,
                                       string newName)
         {
-            m_log.Info(
-                "[AGENT INVENTORY]: " +
-                "Moving item for " + remoteClient.AgentId.ToString());
+            m_log.DebugFormat(
+                "[AGENT INVENTORY]: Moving item {0} to {1} for {2}", itemID, folderID, remoteClient.AgentId);
 
             CachedUserInfo userInfo = CommsManager.UserProfileCacheService.GetUserDetails(remoteClient.AgentId);
             if (userInfo == null)
@@ -429,7 +507,8 @@ namespace OpenSim.Region.Environment.Scenes
         }
 
         /// <summary>
-        /// Create a new inventory item.
+        /// Create a new inventory item.  Called when the client creates a new item directly within their
+        /// inventory (e.g. by selecting a context inventory menu option).
         /// </summary>
         /// <param name="remoteClient"></param>
         /// <param name="transactionID"></param>