1 files changed, 213 insertions, 0 deletions

diff --git a/OpenSim/Region/OptionalModules/PrimLimitsModule/PrimLimitsModule.cs b/OpenSim/Region/OptionalModules/PrimLimitsModule/PrimLimitsModule.cs
new file mode 100644
index 0000000..395bbf1
--- /dev/null
+++ b/OpenSim/Region/OptionalModules/PrimLimitsModule/PrimLimitsModule.cs
@@ -0,0 +1,213 @@
+/*
+ * 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.Linq;
+using System.Reflection;
+using log4net;
+using Mono.Addins;
+using Nini.Config;
+using OpenMetaverse;
+using OpenSim.Framework;
+using OpenSim.Region.Framework.Interfaces;
+using OpenSim.Region.Framework.Scenes;
+
+namespace OpenSim.Region.OptionalModules
+{
+    /// <summary>
+    /// Enables Prim limits for parcel.
+    /// </summary>
+    /// <remarks>
+    /// This module selectivly enables parcel prim limits.
+    /// </remarks>
+    [Extension(Path = "/OpenSim/RegionModules", NodeName = "RegionModule", Id = "PrimLimitsModule")]
+    public class PrimLimitsModule : INonSharedRegionModule
+    {
+        protected IDialogModule m_dialogModule;
+        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+        private bool m_enabled;
+
+        public string Name { get { return "PrimLimitsModule"; } }        
+        
+        public Type ReplaceableInterface { get { return null; } }
+        
+        public void Initialise(IConfigSource config)
+        {
+            string permissionModules = Util.GetConfigVarFromSections<string>(config, "permissionmodules",
+                new string[] { "Startup", "Permissions" }, "DefaultPermissionsModule"); 
+
+            List<string> modules = new List<string>(permissionModules.Split(',').Select(m => m.Trim()));
+
+            if(!modules.Contains("PrimLimitsModule"))
+                return;
+
+            m_log.DebugFormat("[PRIM LIMITS]: Initialized module");
+            m_enabled = true;
+        }
+        
+        public void Close()
+        {
+        }
+        
+        public void AddRegion(Scene scene)
+        {
+            if (!m_enabled)
+            {
+                return;
+            }
+            scene.Permissions.OnRezObject += CanRezObject;
+            scene.Permissions.OnObjectEntry += CanObjectEnter;
+            scene.Permissions.OnDuplicateObject += CanDuplicateObject;
+
+            m_log.DebugFormat("[PRIM LIMITS]: Region {0} added", scene.RegionInfo.RegionName);
+        }
+        
+        public void RemoveRegion(Scene scene)
+        {
+            if (m_enabled)
+            {
+                return;
+            }
+
+            scene.Permissions.OnRezObject -= CanRezObject;
+            scene.Permissions.OnObjectEntry -= CanObjectEnter;
+            scene.Permissions.OnDuplicateObject -= CanDuplicateObject;
+        }        
+        
+        public void RegionLoaded(Scene scene)
+        {
+            m_dialogModule = scene.RequestModuleInterface<IDialogModule>();
+        }
+
+        private bool CanRezObject(int objectCount, UUID ownerID, Vector3 objectPosition, Scene scene)
+        {
+            ILandObject lo = scene.LandChannel.GetLandObject(objectPosition.X, objectPosition.Y);
+
+            string response = DoCommonChecks(objectCount, ownerID, lo, scene);
+
+            if (response != null)
+            {
+                m_dialogModule.SendAlertToUser(ownerID, response);
+                return false;
+            }
+            return true;
+        }
+
+        //OnDuplicateObject
+        private bool CanDuplicateObject(int objectCount, UUID objectID, UUID ownerID, Scene scene, Vector3 objectPosition)
+        {
+            ILandObject lo = scene.LandChannel.GetLandObject(objectPosition.X, objectPosition.Y);
+
+            string response = DoCommonChecks(objectCount, ownerID, lo, scene);
+
+            if (response != null)
+            {
+                m_dialogModule.SendAlertToUser(ownerID, response);
+                return false;
+            }
+            return true;
+        }
+
+        private bool CanObjectEnter(UUID objectID, bool enteringRegion, Vector3 newPoint, Scene scene)
+        {
+            SceneObjectPart obj = scene.GetSceneObjectPart(objectID);
+            Vector3 oldPoint = obj.GroupPosition;
+            int objectCount = obj.ParentGroup.PrimCount;
+            ILandObject oldParcel = scene.LandChannel.GetLandObject(oldPoint.X, oldPoint.Y);
+            ILandObject newParcel = scene.LandChannel.GetLandObject(newPoint.X, newPoint.Y);
+
+            // newParcel will be null only if it outside of our current region.  If this is the case, then the
+            // receiving permissions will perform the check.
+            if (newParcel == null)
+                return true;
+
+            // The prim hasn't crossed a region boundary so we don't need to worry
+            // about prim counts here
+            if(oldParcel.Equals(newParcel))
+            {
+                return true;
+            }
+
+            // Prim counts are determined by the location of the root prim.  if we're
+            // moving a child prim, just let it pass
+            if(!obj.IsRoot)
+            {
+                return true;
+            }
+
+            // TODO: Add Special Case here for temporary prims
+
+            string response = DoCommonChecks(objectCount, obj.OwnerID, newParcel, scene);
+
+            if (response != null)
+            {
+                m_dialogModule.SendAlertToUser(obj.OwnerID, response);
+                return false;
+            }
+            return true;
+        }
+
+        private string DoCommonChecks(int objectCount, UUID ownerID, ILandObject lo, Scene scene)
+        {
+            string response = null;
+
+            int simulatorCapacity = lo.GetSimulatorMaxPrimCount();
+            if ((objectCount + lo.PrimCounts.Total) > simulatorCapacity)
+            {
+                response = "Unable to rez object because the parcel is too full";
+            }
+            else
+            {
+                int maxPrimsPerUser = scene.RegionInfo.MaxPrimsPerUser;
+                if (maxPrimsPerUser >= 0)
+                {
+                    // per-user prim limit is set
+                    if (ownerID != lo.LandData.OwnerID || lo.LandData.IsGroupOwned)
+                    {
+                        // caller is not the sole Parcel owner
+                        EstateSettings estateSettings = scene.RegionInfo.EstateSettings;
+                        if (ownerID != estateSettings.EstateOwner)
+                        {
+                            // caller is NOT the Estate owner
+                            List<UUID> mgrs = new List<UUID>(estateSettings.EstateManagers);
+                            if (!mgrs.Contains(ownerID))
+                            {
+                                // caller is not an Estate Manager
+                                if ((lo.PrimCounts.Users[ownerID] + objectCount) >  maxPrimsPerUser)
+                                {
+                                    response = "Unable to rez object because you have reached your limit";
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            return response;
+        }
+    }
+}