Add getestatecovenant command to TestClient

Programs/examples/TestClient/Commands/Estate/GetEstateCovenantCommand.cs

@@ -0,0 +1,69 @@
+using System;
+using System.Text;
+using System.Threading;
+using OpenMetaverse.Assets;
+
+namespace OpenMetaverse.TestClient
+{
+    public class GetEstateCovenantCommand : Command
+    {
+        AutoResetEvent waitEvent = new AutoResetEvent(false);
+        private static StringBuilder result = new StringBuilder();
+        
+        public GetEstateCovenantCommand(TestClient client)
+        {
+            Name = "getestatecovenant";
+            Description = "Retrieve estate covenant information. Usage: getestatecovenant [timeout in seconds]";
+            Category = CommandCategory.Simulator;
+        }
+        
+        public override string Execute(string[] args, UUID fromAgentID)
+        {
+            var timeout = 20;
+            if (args.Length > 0 && int.TryParse(args[0], out timeout) != true)
+                return "Usage: getestatecovenant [timeout]";
+
+            Client.Estate.EstateCovenantReply += CovenantReceived;
+            
+            Client.Estate.RequestCovenant();
+            
+            // wait for reply or timeout
+            if (!waitEvent.WaitOne(TimeSpan.FromSeconds(timeout), false))
+            {
+                result.Append("Timeout waiting for covenant info.");
+            }
+
+            Client.Estate.EstateCovenantReply -= CovenantReceived;
+
+            return result.ToString();
+        }
+
+        private void CovenantReceived(object sender, EstateCovenantReplyEventArgs e)
+        {
+            result.AppendFormat("Estate name: {0}\nEstate owner: {1}\n", 
+                e.EstateName, e.EstateOwnerID);
+            if (e.CovenantID == UUID.Zero)
+            {
+                waitEvent.Set();
+            }
+            else
+            {
+                result.AppendFormat("Estate Covenant ID: {0}\nEstate Covenant Update Time: {1}\n", 
+                    e.CovenantID, Utils.UnixTimeToDateTime(Convert.ToInt32(e.Timestamp)));
+                Client.Estate.RequestCovenantNotecard(e.CovenantID, (transfer, asset) =>
+                {
+                    if (transfer.Success)
+                    {
+                        result.AppendFormat("Covenant:\n{0}", Utils.BytesToString(asset.AssetData));
+                    }
+                    else
+                    {
+                        result.Append("Could not retrieve covenant notecard.");
+                    }
+
+                    waitEvent.Set();
+                });
+            }
+        }
+    }
+}