1 files changed, 259 insertions, 0 deletions
diff --git a/mcs/class/System.Drawing/System.Drawing.Printing/PrintingPermission.cs b/mcs/class/System.Drawing/System.Drawing.Printing/PrintingPermission.cs
new file mode 100644
index 00000000000..8aee6ce95cd
--- /dev/null
+++ b/mcs/class/System.Drawing/System.Drawing.Printing/PrintingPermission.cs
@@ -0,0 +1,259 @@
+//
+// System.Drawing.PrintingPermission.cs
+//
+// Authors:
+//	Dennis Hayes (dennish@Raytek.com)
+//	Herve Poussineau (hpoussineau@fr.st)
+//	Sebastien Pouliot  <sebastien@ximian.com>
+//
+// (C) 2002 Ximian, Inc
+// Copyright (C) 2004 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
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+// 
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+
+using System.Globalization;
+using System.Security;
+using System.Security.Permissions;
+
+namespace System.Drawing.Printing {
+
+	[Serializable]
+	public sealed class PrintingPermission : CodeAccessPermission, IUnrestrictedPermission {
+
+		private const int version = 1;
+
+		private PrintingPermissionLevel _Level;
+		
+		public PrintingPermission (PermissionState state) 
+		{
+			if (CheckPermissionState (state, true) == PermissionState.Unrestricted)
+				_Level = PrintingPermissionLevel.AllPrinting;
+			else
+				_Level = PrintingPermissionLevel.NoPrinting;
+		}
+
+		public PrintingPermission (PrintingPermissionLevel printingLevel) 
+		{
+			Level = printingLevel;
+		}
+		
+		// properties
+
+		public PrintingPermissionLevel Level{
+			get { return _Level; }
+			set {
+				if (!Enum.IsDefined (typeof (PrintingPermissionLevel), value)) {
+					string msg = Locale.GetText ("Invalid enum {0}");
+					throw new ArgumentException (String.Format (msg, value), "Level");
+				}
+				 _Level = value;
+			}
+		}
+
+		// methods
+
+		public override IPermission Copy ()
+		{
+			return new PrintingPermission (this.Level);
+		}
+		
+		public override void FromXml (SecurityElement esd)
+		{
+			CheckSecurityElement (esd, "esd", version, version);
+			// Note: we do not (yet) care about the return value 
+			// as we only accept version 1 (min/max values)
+
+			if (IsUnrestricted (esd))
+				_Level = PrintingPermissionLevel.AllPrinting;
+			else {
+				string level = esd.Attribute ("Level");
+				if (level != null) {
+					_Level = (PrintingPermissionLevel) Enum.Parse (
+						typeof (PrintingPermissionLevel), level);
+				}
+				else
+					_Level = PrintingPermissionLevel.NoPrinting;
+			}
+		}
+		
+		public override IPermission Intersect (IPermission target)
+		{
+			PrintingPermission pp = Cast (target);
+			if ((pp == null) || IsEmpty () || pp.IsEmpty ())
+				return null;
+
+			PrintingPermissionLevel level = (_Level <= pp.Level) ? _Level : pp.Level;
+			return new PrintingPermission (level);
+		}
+		
+		public override bool IsSubsetOf (IPermission target)
+		{
+			PrintingPermission pp = Cast (target);
+			if (pp == null)
+				return IsEmpty ();
+			
+			return (_Level <= pp.Level);
+		}
+		
+		public bool IsUnrestricted ()
+		{
+			return (_Level == PrintingPermissionLevel.AllPrinting);
+		}
+		
+		public override SecurityElement ToXml ()
+		{
+			SecurityElement se = Element (version);
+			if (IsUnrestricted ())
+				se.AddAttribute ("Unrestricted", "true");
+			else
+				se.AddAttribute ("Level", _Level.ToString ());
+			return se;
+		}
+		
+		public override IPermission Union (IPermission target)
+		{
+			PrintingPermission pp = Cast (target);
+			if (pp == null)
+				return new PrintingPermission (_Level);
+			if (IsUnrestricted () || pp.IsUnrestricted ())
+				return new PrintingPermission (PermissionState.Unrestricted);
+			if (IsEmpty () && pp.IsEmpty ())
+				return null;
+
+			PrintingPermissionLevel level = (_Level > pp.Level) ? _Level : pp.Level;
+			return new PrintingPermission (level);
+		}
+
+		// Internal helpers methods
+
+		private bool IsEmpty ()
+		{
+			return (_Level == PrintingPermissionLevel.NoPrinting);
+		}
+
+		private PrintingPermission Cast (IPermission target)
+		{
+			if (target == null)
+				return null;
+
+			PrintingPermission pp = (target as PrintingPermission);
+			if (pp == null) {
+				ThrowInvalidPermission (target, typeof (PrintingPermission));
+			}
+
+			return pp;
+		}
+
+		// NOTE: The following static methods should be moved out to a (static?) class 
+		// if (ever) System.Drawing.dll gets more than one permission in it's assembly.
+
+		// snippet moved from FileIOPermission (nickd) to be reused in all derived classes
+		internal SecurityElement Element (int version) 
+		{
+			SecurityElement se = new SecurityElement ("IPermission");
+			Type type = this.GetType ();
+			se.AddAttribute ("class", type.FullName + ", " + type.Assembly.ToString ().Replace ('\"', '\''));
+			se.AddAttribute ("version", version.ToString ());
+			return se;
+		}
+
+		internal static PermissionState CheckPermissionState (PermissionState state, bool allowUnrestricted)
+		{
+			string msg;
+			switch (state) {
+			case PermissionState.None:
+				break;
+			case PermissionState.Unrestricted:
+				if (!allowUnrestricted) {
+					msg = Locale.GetText ("Unrestricted isn't not allowed for identity permissions.");
+					throw new ArgumentException (msg, "state");
+				}
+				break;
+			default:
+				msg = String.Format (Locale.GetText ("Invalid enum {0}"), state);
+				throw new ArgumentException (msg, "state");
+			}
+			return state;
+		}
+
+		// logic isn't identical to CodeAccessPermission.CheckSecurityElement - see unit tests
+		internal static int CheckSecurityElement (SecurityElement se, string parameterName, int minimumVersion, int maximumVersion) 
+		{
+			if (se == null)
+				throw new ArgumentNullException (parameterName);
+
+			string c = se.Attribute ("class");
+#if NET_2_0
+			if (c == null) {
+				string msg = Locale.GetText ("Missing 'class' attribute.");
+				throw new ArgumentException (msg, parameterName);
+			}
+#else
+			if ((c == null) || (String.Compare (c, 0, "System.Drawing.Printing.PrintingPermission", 0, 42) != 0)) {
+				string msg = Locale.GetText ("Wrong 'class' attribute.");
+				throw new ArgumentException (msg, parameterName);
+			}
+#endif
+			// we assume minimum version if no version number is supplied
+			int version = minimumVersion;
+			string v = se.Attribute ("version");
+			if (v != null) {
+				try {
+					version = Int32.Parse (v);
+				}
+				catch (Exception e) {
+					string msg = Locale.GetText ("Couldn't parse version from '{0}'.");
+					msg = String.Format (msg, v);
+					throw new ArgumentException (msg, parameterName, e);
+				}
+			}
+#if !NET_2_0
+			else {
+				string msg = Locale.GetText ("Missing 'version' attribute.");
+				throw new ArgumentException (msg, parameterName);
+			}
+#endif
+
+			if ((version < minimumVersion) || (version > maximumVersion)) {
+				string msg = Locale.GetText ("Unknown version '{0}', expected versions between ['{1}','{2}'].");
+				msg = String.Format (msg, version, minimumVersion, maximumVersion);
+				throw new ArgumentException (msg, parameterName);
+			}
+			return version;
+		}
+
+		// must be called after CheckSecurityElement (i.e. se != null)
+		internal static bool IsUnrestricted (SecurityElement se) 
+		{
+			string value = se.Attribute ("Unrestricted");
+			if (value == null)
+				return false;
+			return (String.Compare (value, Boolean.TrueString, true, CultureInfo.InvariantCulture) == 0);
+		}
+
+		internal static void ThrowInvalidPermission (IPermission target, Type expected) 
+		{
+			string msg = Locale.GetText ("Invalid permission type '{0}', expected type '{1}'.");
+			msg = String.Format (msg, target.GetType (), expected);
+			throw new ArgumentException (msg, "target");
+		}
+	}
+}