2 // System.Security.Permissions.KeyContainerPermission class
5 // Sebastien Pouliot <sebastien@ximian.com>
7 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
9 // Permission is hereby granted, free of charge, to any person obtaining
10 // a copy of this software and associated documentation files (the
11 // "Software"), to deal in the Software without restriction, including
12 // without limitation the rights to use, copy, modify, merge, publish,
13 // distribute, sublicense, and/or sell copies of the Software, and to
14 // permit persons to whom the Software is furnished to do so, subject to
15 // the following conditions:
17 // The above copyright notice and this permission notice shall be
18 // included in all copies or substantial portions of the Software.
20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
31 using System.Globalization;
33 namespace System.Security.Permissions {
36 public sealed class KeyContainerPermission : CodeAccessPermission, IUnrestrictedPermission, IBuiltInPermission {
38 private KeyContainerPermissionAccessEntryCollection _accessEntries;
39 private KeyContainerPermissionFlags _flags;
41 private const int version = 1;
45 public KeyContainerPermission (PermissionState state)
47 if (CheckPermissionState (state, true) == PermissionState.Unrestricted) {
48 _flags = KeyContainerPermissionFlags.AllFlags;
52 public KeyContainerPermission (KeyContainerPermissionFlags flags)
57 public KeyContainerPermission (KeyContainerPermissionFlags flags, KeyContainerPermissionAccessEntry[] accessList)
60 if (accessList != null) {
61 foreach (KeyContainerPermissionAccessEntry kcpae in accessList) {
62 _accessEntries.Add (kcpae);
69 public KeyContainerPermissionAccessEntryCollection AccessEntries {
70 get { return _accessEntries; }
73 public KeyContainerPermissionFlags Flags {
74 get { return _flags; }
79 public override IPermission Copy ()
81 if (_accessEntries.Count == 0)
82 return new KeyContainerPermission (_flags);
84 KeyContainerPermissionAccessEntry[] list = new KeyContainerPermissionAccessEntry [_accessEntries.Count];
85 _accessEntries.CopyTo (list, 0);
86 return new KeyContainerPermission (_flags, list);
89 public override void FromXml (SecurityElement esd)
91 // General validation in CodeAccessPermission
92 CheckSecurityElement (esd, "esd", version, version);
93 // Note: we do not (yet) care about the return value
94 // as we only accept version 1 (min/max values)
96 if (IsUnrestricted (esd)) {
97 _flags = KeyContainerPermissionFlags.AllFlags;
101 _flags = (KeyContainerPermissionFlags) Enum.Parse (
102 typeof (KeyContainerPermissionFlags), esd.Attribute ("Flags"));
107 public override IPermission Intersect (IPermission target)
113 public override bool IsSubsetOf (IPermission target)
118 public bool IsUnrestricted ()
120 return (_flags == KeyContainerPermissionFlags.AllFlags);
123 public override SecurityElement ToXml ()
125 SecurityElement e = Element (version);
126 if (IsUnrestricted ()) {
127 e.AddAttribute ("Unrestricted", "true");
135 public override IPermission Union (IPermission target)
137 KeyContainerPermission kcp = Cast (target);
141 KeyContainerPermissionAccessEntryCollection kcpaec = new KeyContainerPermissionAccessEntryCollection ();
143 foreach (KeyContainerPermissionAccessEntry kcpae in _accessEntries) {
146 // copy second group...
147 foreach (KeyContainerPermissionAccessEntry kcpae in kcp._accessEntries) {
148 // ... but only if not present in first group
149 if (_accessEntries.IndexOf (kcpae) == -1)
153 if (kcpaec.Count == 0)
154 return new KeyContainerPermission ((_flags | kcp._flags));
156 KeyContainerPermissionAccessEntry[] list = new KeyContainerPermissionAccessEntry [kcpaec.Count];
157 kcpaec.CopyTo (list, 0);
158 return new KeyContainerPermission ((_flags | kcp._flags), list);
161 // IBuiltInPermission
162 int IBuiltInPermission.GetTokenIndex ()
164 return (int) BuiltInToken.KeyContainer;
169 private void SetFlags (KeyContainerPermissionFlags flags)
171 if ((flags & KeyContainerPermissionFlags.AllFlags) != 0) {
172 string msg = String.Format (Locale.GetText ("Invalid enum {0}"), flags);
173 throw new ArgumentException (msg, "KeyContainerPermissionFlags");
178 private KeyContainerPermission Cast (IPermission target)
183 KeyContainerPermission kcp = (target as KeyContainerPermission);
185 ThrowInvalidPermission (target, typeof (KeyContainerPermission));