122 lines
3.9 KiB
C#
122 lines
3.9 KiB
C#
//
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// System.Configuration.ConfigurationPermission.cs
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//
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// Author:
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// Chris Toshok <toshok@ximian.com>
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//
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//
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// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System.Security;
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using System.Security.Permissions;
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namespace System.Configuration {
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[Serializable]
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public sealed class ConfigurationPermission : CodeAccessPermission, IUnrestrictedPermission
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{
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public ConfigurationPermission (PermissionState state)
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{
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unrestricted = (state == PermissionState.Unrestricted);
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}
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public override IPermission Copy ()
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{
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return new ConfigurationPermission (unrestricted ? PermissionState.Unrestricted : PermissionState.None);
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}
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public override void FromXml (SecurityElement securityElement)
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{
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if (securityElement == null)
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throw new ArgumentNullException ("securityElement");
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// LAMESPEC: it says to throw an ArgumentNullException in this case
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if (securityElement.Tag != "IPermission")
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throw new ArgumentException ("securityElement");
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string unrestricted = securityElement.Attribute ("Unrestricted");
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if (unrestricted != null) {
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this.unrestricted = (String.Compare (unrestricted, "true", StringComparison.InvariantCultureIgnoreCase) == 0);
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}
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}
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public override IPermission Intersect (IPermission target)
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{
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if (target == null)
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return null;
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ConfigurationPermission p = target as ConfigurationPermission;
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if (p == null)
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throw new ArgumentException ("target");
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return new ConfigurationPermission (unrestricted && p.IsUnrestricted() ? PermissionState.Unrestricted : PermissionState.None);
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}
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public override IPermission Union (IPermission target)
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{
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if (target == null)
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return Copy ();
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ConfigurationPermission p = target as ConfigurationPermission;
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if (p == null)
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throw new ArgumentException ("target");
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return new ConfigurationPermission (unrestricted || p.IsUnrestricted() ? PermissionState.Unrestricted : PermissionState.None);
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}
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public override bool IsSubsetOf (IPermission target)
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{
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if (target == null)
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return !unrestricted;
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ConfigurationPermission p = target as ConfigurationPermission;
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if (p == null)
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throw new ArgumentException ("target");
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if (unrestricted)
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return p.IsUnrestricted();
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else
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return true;
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}
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public bool IsUnrestricted ()
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{
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return unrestricted;
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}
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public override SecurityElement ToXml ()
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{
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SecurityElement root = new SecurityElement ("IPermission");
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root.AddAttribute ("class", this.GetType().AssemblyQualifiedName);
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root.AddAttribute ("version", "1");
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if (unrestricted) {
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root.AddAttribute ("Unrestricted", "true");
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}
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return root;
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}
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bool unrestricted;
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}
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}
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