Fix for rare mono runtime crash during shutdown sequence on Windows.

[mono.git] / mcs / class / System / System.Net.NetworkInformation / IPAddressInformationCollection.cs

diff --git a/mcs/class/System/System.Net.NetworkInformation/IPAddressInformationCollection.cs b/mcs/class/System/System.Net.NetworkInformation/IPAddressInformationCollection.cs
index 33b5da3a52e9eeda8534643b01ad44b5edc68b3f..1492fe0f925cbc906979606054c419eeed634631 100644 (file)
--- a/mcs/class/System/System.Net.NetworkInformation/IPAddressInformationCollection.cs
+++ b/mcs/class/System/System.Net.NetworkInformation/IPAddressInformationCollection.cs
@@ -1,10 +1,11 @@
 //
 // System.Net.NetworkInformation.IPAddressInformationCollection
 //
-// Author:
+// Authors:
 //     Gonzalo Paniagua Javier (gonzalo@novell.com)
+//     Atsushi Enomoto (atsushi@ximian.com)
 //
-// Copyright (c) 2006 Novell, Inc. (http://www.novell.com)
+// Copyright (c) 2006-2007 Novell, Inc. (http://www.novell.com)
 //
 // Permission is hereby granted, free of charge, to any person obtaining
 // a copy of this software and associated documentation files (the
@@ -25,14 +26,14 @@
 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 //
-#if NET_2_0
 using System;
 using System.Collections;
 using System.Collections.Generic;
+using System.Runtime.InteropServices;
 
 namespace System.Net.NetworkInformation {
        public class IPAddressInformationCollection : ICollection<IPAddressInformation>, IEnumerable<IPAddressInformation>, IEnumerable {
-               List <IPAddressInformation> list;
+               List <IPAddressInformation> list = new List <IPAddressInformation> ();
 
                internal IPAddressInformationCollection ()
                {
@@ -40,12 +41,16 @@ namespace System.Net.NetworkInformation {
 
                public virtual void Add (IPAddressInformation address)
                {
-                       throw new NotSupportedException ("The collection is read-only.");
+                       if (IsReadOnly)
+                               throw new NotSupportedException ("The collection is read-only.");
+                       list.Add (address);
                }
 
                public virtual void Clear ()
                {
-                       throw new NotSupportedException ("The collection is read-only.");
+                       if (IsReadOnly)
+                               throw new NotSupportedException ("The collection is read-only.");
+                       list.Clear ();
                }
 
                public virtual bool Contains (IPAddressInformation address)
@@ -65,7 +70,9 @@ namespace System.Net.NetworkInformation {
 
                public virtual bool Remove (IPAddressInformation address)
                {
-                       throw new NotSupportedException ("The collection is read-only.");
+                       if (IsReadOnly)
+                               throw new NotSupportedException ("The collection is read-only.");
+                       return list.Remove (address);
                }
 
                IEnumerator IEnumerable.GetEnumerator ()
@@ -85,6 +92,49 @@ namespace System.Net.NetworkInformation {
                        get { return list [index]; }
                }
        }
-}
+
+       class IPAddressInformationImplCollection : IPAddressInformationCollection
+       {
+               public static readonly IPAddressInformationImplCollection Empty = new IPAddressInformationImplCollection (true);
+
+               bool is_readonly;
+
+               // for static methods
+               IPAddressInformationImplCollection (bool isReadOnly)
+               {
+                       is_readonly = isReadOnly;
+               }
+
+               public override bool IsReadOnly {
+                       get { return is_readonly; }
+               }
+
+#if !MOBILE
+               public static IPAddressInformationCollection Win32FromAnycast (IntPtr ptr)
+               {
+                       IPAddressInformationImplCollection c = new IPAddressInformationImplCollection (false);
+                       Win32_IP_ADAPTER_ANYCAST_ADDRESS a;
+                       for (IntPtr p = ptr; p != IntPtr.Zero; p = a.Next) {
+                               a = (Win32_IP_ADAPTER_ANYCAST_ADDRESS) Marshal.PtrToStructure (p, typeof (Win32_IP_ADAPTER_ANYCAST_ADDRESS));
+                               c.Add (new IPAddressInformationImpl (
+                                      a.Address.GetIPAddress (),
+                                      a.LengthFlags.IsDnsEligible,
+                                      a.LengthFlags.IsTransient));
+                       }
+                       c.is_readonly = true;
+                       return c;
+               }
 #endif
 
+               public static IPAddressInformationImplCollection LinuxFromAnycast (IList<IPAddress> addresses)
+               {
+                       IPAddressInformationImplCollection c = new IPAddressInformationImplCollection (false);
+                       foreach (IPAddress address in addresses) {
+                               c.Add (new IPAddressInformationImpl (address, false, false));
+                       }
+                       c.is_readonly = true;
+                       return c;
+               }
+       }
+}
+