2 // System.Web.AspNetHostingPermission.cs
5 // Andreas Nahr (ClassDevelopment@A-SoftTech.com)
6 // Sebastien Pouliot <sebastien@ximian.com>
8 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
10 // Permission is hereby granted, free of charge, to any person obtaining
11 // a copy of this software and associated documentation files (the
12 // "Software"), to deal in the Software without restriction, including
13 // without limitation the rights to use, copy, modify, merge, publish,
14 // distribute, sublicense, and/or sell copies of the Software, and to
15 // permit persons to whom the Software is furnished to do so, subject to
16 // the following conditions:
18 // The above copyright notice and this permission notice shall be
19 // included in all copies or substantial portions of the Software.
21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
32 using System
.Security
;
33 using System
.Security
.Permissions
;
35 namespace System
.Web
{
38 public sealed class AspNetHostingPermission
: CodeAccessPermission
, IUnrestrictedPermission
{
40 private const int version
= 1;
42 private AspNetHostingPermissionLevel _level
;
44 public AspNetHostingPermission (AspNetHostingPermissionLevel level
)
46 // use the property to get the enum validation
50 public AspNetHostingPermission (PermissionState state
)
52 if (PermissionHelper
.CheckPermissionState (state
, true) == PermissionState
.Unrestricted
)
53 _level
= AspNetHostingPermissionLevel
.Unrestricted
;
55 _level
= AspNetHostingPermissionLevel
.None
;
58 public AspNetHostingPermissionLevel Level
{
59 get { return _level; }
61 if (!Enum
.IsDefined (typeof (AspNetHostingPermissionLevel
), value)) {
62 string msg
= Locale
.GetText ("Invalid enum {0}.");
63 throw new ArgumentException (String
.Format (msg
, value), "Level");
69 public bool IsUnrestricted ()
71 return (_level
== AspNetHostingPermissionLevel
.Unrestricted
);
74 public override IPermission
Copy ()
76 // note: no need to handle unrestricted here
77 return new AspNetHostingPermission (_level
);
80 public override void FromXml (SecurityElement securityElement
)
82 PermissionHelper
.CheckSecurityElement (securityElement
, "securityElement", version
, version
);
83 if (securityElement
.Tag
!= "IPermission") {
84 string msg
= Locale
.GetText ("Invalid tag '{0}' for permission.");
85 throw new ArgumentException (String
.Format (msg
, securityElement
.Tag
), "securityElement");
87 if (securityElement
.Attribute ("version") == null) {
88 string msg
= Locale
.GetText ("Missing version attribute.");
89 throw new ArgumentException (msg
, "securityElement");
92 if (PermissionHelper
.IsUnrestricted (securityElement
)) {
93 // in case it's get fixed later...
94 _level
= AspNetHostingPermissionLevel
.Unrestricted
;
97 string level
= securityElement
.Attribute ("Level");
99 _level
= (AspNetHostingPermissionLevel
) Enum
.Parse (
100 typeof (AspNetHostingPermissionLevel
), level
);
103 _level
= AspNetHostingPermissionLevel
.None
;
107 public override SecurityElement
ToXml ()
109 SecurityElement se
= PermissionHelper
.Element (typeof (AspNetHostingPermission
), version
);
110 // FIXME: attribute "unrestricted" isn't used by this class - reported as FDBK15156
111 se
.AddAttribute ("Level", _level
.ToString ());
115 public override IPermission
Intersect (IPermission target
)
117 AspNetHostingPermission anhp
= Cast (target
);
121 return new AspNetHostingPermission ((_level
<= anhp
.Level
) ? _level
: anhp
.Level
);
124 public override bool IsSubsetOf (IPermission target
)
126 AspNetHostingPermission anhp
= Cast (target
);
129 return (_level
<= anhp
._level
);
132 public override IPermission
Union (IPermission target
)
134 AspNetHostingPermission anhp
= Cast (target
);
137 return new AspNetHostingPermission ((_level
> anhp
.Level
) ? _level
: anhp
.Level
);
140 // Internal helpers methods
142 private bool IsEmpty ()
144 return (_level
== AspNetHostingPermissionLevel
.None
);
147 private AspNetHostingPermission
Cast (IPermission target
)
152 AspNetHostingPermission anhp
= (target
as AspNetHostingPermission
);
154 PermissionHelper
.ThrowInvalidPermission (target
, typeof (AspNetHostingPermission
));