Code:
/ DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Base / System / Security / RightsManagement / Grant.cs / 1 / Grant.cs
//------------------------------------------------------------------------------ // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // Description: This class represents a (ContentUser , ContentRight) pair. // // History: // 06/01/2005: [....] : Initial Implementation // //----------------------------------------------------------------------------- using System; using System.Collections; using System.Diagnostics; using System.Globalization; using System.Windows; using MS.Internal.Security.RightsManagement; using SecurityHelper=MS.Internal.WindowsBase.SecurityHelper; namespace System.Security.RightsManagement { ////// ContentGrant class represent a (ContentUser , ContentRight) pair this is /// a basic building block for structures that need to express information about rights granted to a document. /// ////// Critical: This class expose access to methods that eventually do one or more of the the following /// 1. call into unmanaged code /// 2. affects state/data that will eventually cross over unmanaged code boundary /// 3. Return some RM related information which is considered private /// /// TreatAsSafe: This attribute automatically applied to all public entry points. All the public entry points have /// Demands for RightsManagementPermission at entry to counter the possible attacks that do /// not lead to the unmanaged code directly(which is protected by another Demand there) but rather leave /// some status/data behind which eventually might cross the unamanaged boundary. /// [SecurityCritical(SecurityCriticalScope.Everything)] public class ContentGrant { ////// Constructor for the read only ContentGrant class. It takes values for user and right as parameters. /// public ContentGrant(ContentUser user, ContentRight right) : this(user, right, DateTime.MinValue, DateTime.MaxValue) { } ////// Constructor for the read only ContentGrant class. It takes values for /// user, right, validFrom, and validUntil as parameters. /// public ContentGrant(ContentUser user, ContentRight right, DateTime validFrom, DateTime validUntil) { SecurityHelper.DemandRightsManagementPermission(); // Add validation here if (user == null) { throw new ArgumentNullException("user"); } if ((right != ContentRight.View) && (right != ContentRight.Edit) && (right != ContentRight.Print) && (right != ContentRight.Extract) && (right != ContentRight.ObjectModel) && (right != ContentRight.Owner) && (right != ContentRight.ViewRightsData) && (right != ContentRight.Forward) && (right != ContentRight.Reply) && (right != ContentRight.ReplyAll) && (right != ContentRight.Sign) && (right != ContentRight.DocumentEdit) && (right != ContentRight.Export)) { throw new ArgumentOutOfRangeException("right"); } if (validFrom > validUntil) { throw new ArgumentOutOfRangeException("validFrom"); } _user = user; _right = right; _validFrom = validFrom; _validUntil = validUntil; } ////// Read only User propery. /// public ContentUser User { get { SecurityHelper.DemandRightsManagementPermission(); return _user; } } ////// Read only Right propery. /// public ContentRight Right { get { SecurityHelper.DemandRightsManagementPermission(); return _right; } } ////// The starting validity time, in UTC time, for the grant. /// public DateTime ValidFrom { get { SecurityHelper.DemandRightsManagementPermission(); return _validFrom; } } ////// The ending validity time, in UTC time, for the grant. /// public DateTime ValidUntil { get { SecurityHelper.DemandRightsManagementPermission(); return _validUntil; } } private ContentUser _user; private ContentRight _right; private DateTime _validFrom; private DateTime _validUntil; } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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