forestall bug reports about the Command error: System.EntryPointNotFoundException: CreateZStream save/load oar/iar issue by telling the user what the likely problem is

3 files changed, 86 insertions, 8 deletions

diff --git a/OpenSim/Region/CoreModules/Avatar/Inventory/Archiver/InventoryArchiverModule.cs b/OpenSim/Region/CoreModules/Avatar/Inventory/Archiver/InventoryArchiverModule.cs
index ecd60bd..ac3e199 100644
--- a/OpenSim/Region/CoreModules/Avatar/Inventory/Archiver/InventoryArchiverModule.cs
+++ b/OpenSim/Region/CoreModules/Avatar/Inventory/Archiver/InventoryArchiverModule.cs
@@ -131,7 +131,20 @@ namespace OpenSim.Region.CoreModules.Avatar.Inventory.Archiver
                 {
                     if (CheckPresence(userInfo.UserProfile.ID))
                     {
-                        new InventoryArchiveWriteRequest(id, this, m_aScene, userInfo, invPath, saveStream).Execute();
+                        try
+                        {
+                            new InventoryArchiveWriteRequest(id, this, m_aScene, userInfo, invPath, saveStream).Execute();
+                        }                                    
+                        catch (EntryPointNotFoundException e)
+                        {
+                            m_log.ErrorFormat(
+                                "[ARCHIVER]: Mismatch between Mono and zlib1g library version when trying to create compression stream."
+                                    + "If you've manually installed Mono, have you appropriately updated zlib1g as well?");
+                            m_log.Error(e);
+
+                            return false;
+                        }
+                    
                         return true;
                     }
                     else
@@ -156,7 +169,20 @@ namespace OpenSim.Region.CoreModules.Avatar.Inventory.Archiver
                 {
                     if (CheckPresence(userInfo.UserProfile.ID))
                     {
-                        new InventoryArchiveWriteRequest(id, this, m_aScene, userInfo, invPath, savePath).Execute();
+                        try
+                        {
+                            new InventoryArchiveWriteRequest(id, this, m_aScene, userInfo, invPath, savePath).Execute();
+                        }                                    
+                        catch (EntryPointNotFoundException e)
+                        {
+                            m_log.ErrorFormat(
+                                "[ARCHIVER]: Mismatch between Mono and zlib1g library version when trying to create compression stream."
+                                    + "If you've manually installed Mono, have you appropriately updated zlib1g as well?");
+                            m_log.Error(e);
+
+                            return false;
+                        }
+                    
                         return true;
                     }
                     else
@@ -181,8 +207,22 @@ namespace OpenSim.Region.CoreModules.Avatar.Inventory.Archiver
                 {
                     if (CheckPresence(userInfo.UserProfile.ID))
                     {
-                        InventoryArchiveReadRequest request = 
-                            new InventoryArchiveReadRequest(m_aScene, userInfo, invPath, loadStream);
+                        InventoryArchiveReadRequest request;
+                        
+                        try
+                        {
+                            request = new InventoryArchiveReadRequest(m_aScene, userInfo, invPath, loadStream);
+                        }                                    
+                        catch (EntryPointNotFoundException e)
+                        {
+                            m_log.ErrorFormat(
+                                "[ARCHIVER]: Mismatch between Mono and zlib1g library version when trying to create compression stream."
+                                    + "If you've manually installed Mono, have you appropriately updated zlib1g as well?");
+                            m_log.Error(e);
+
+                            return false;
+                        }
+                    
                         UpdateClientWithLoadedNodes(userInfo, request.Execute());
 
                         return true;
@@ -209,8 +249,22 @@ namespace OpenSim.Region.CoreModules.Avatar.Inventory.Archiver
                 {
                     if (CheckPresence(userInfo.UserProfile.ID))
                     {
-                        InventoryArchiveReadRequest request = 
-                            new InventoryArchiveReadRequest(m_aScene, userInfo, invPath, loadPath);
+                        InventoryArchiveReadRequest request;
+                        
+                        try
+                        {
+                            request = new InventoryArchiveReadRequest(m_aScene, userInfo, invPath, loadPath);
+                        }                                    
+                        catch (EntryPointNotFoundException e)
+                        {
+                            m_log.ErrorFormat(
+                                "[ARCHIVER]: Mismatch between Mono and zlib1g library version when trying to create compression stream."
+                                    + "If you've manually installed Mono, have you appropriately updated zlib1g as well?");
+                            m_log.Error(e);
+
+                            return false;
+                        }
+                        
                         UpdateClientWithLoadedNodes(userInfo, request.Execute());
 
                         return true;
diff --git a/OpenSim/Region/CoreModules/World/Archiver/ArchiveReadRequest.cs b/OpenSim/Region/CoreModules/World/Archiver/ArchiveReadRequest.cs
index 8ed1913..ad58f40 100644
--- a/OpenSim/Region/CoreModules/World/Archiver/ArchiveReadRequest.cs
+++ b/OpenSim/Region/CoreModules/World/Archiver/ArchiveReadRequest.cs
@@ -73,7 +73,19 @@ namespace OpenSim.Region.CoreModules.World.Archiver
         public ArchiveReadRequest(Scene scene, string loadPath, bool merge, Guid requestId)
         {
             m_scene = scene;
-            m_loadStream = new GZipStream(GetStream(loadPath), CompressionMode.Decompress);
+
+            try
+            {
+                m_loadStream = new GZipStream(GetStream(loadPath), CompressionMode.Decompress);
+            }
+            catch (EntryPointNotFoundException e)
+            {
+                m_log.ErrorFormat(
+                    "[ARCHIVER]: Mismatch between Mono and zlib1g library version when trying to create compression stream."
+                        + "If you've manually installed Mono, have you appropriately updated zlib1g as well?");
+                m_log.Error(e);
+            }
+        
             m_errorMessage = String.Empty;
             m_merge = merge;
             m_requestId = requestId;
diff --git a/OpenSim/Region/CoreModules/World/Archiver/ArchiveWriteRequestPreparation.cs b/OpenSim/Region/CoreModules/World/Archiver/ArchiveWriteRequestPreparation.cs
index 71bfe57..b61b341 100644
--- a/OpenSim/Region/CoreModules/World/Archiver/ArchiveWriteRequestPreparation.cs
+++ b/OpenSim/Region/CoreModules/World/Archiver/ArchiveWriteRequestPreparation.cs
@@ -65,7 +65,19 @@ namespace OpenSim.Region.CoreModules.World.Archiver
         public ArchiveWriteRequestPreparation(Scene scene, string savePath, Guid requestId)
         {
             m_scene = scene;
-            m_saveStream = new GZipStream(new FileStream(savePath, FileMode.Create), CompressionMode.Compress);
+
+            try
+            {
+                m_saveStream = new GZipStream(new FileStream(savePath, FileMode.Create), CompressionMode.Compress);
+            }
+            catch (EntryPointNotFoundException e)
+            {
+                m_log.ErrorFormat(
+                    "[ARCHIVER]: Mismatch between Mono and zlib1g library version when trying to create compression stream."
+                        + "If you've manually installed Mono, have you appropriately updated zlib1g as well?");
+                m_log.Error(e);
+            }
+            
             m_requestId = requestId;
         }