Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / clr / src / BCL / System / Security / Policy / SiteMembershipCondition.cs / 1 / SiteMembershipCondition.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== // SiteMembershipCondition.cs // // Implementation of membership condition for zones // namespace System.Security.Policy { using System; using SecurityManager = System.Security.SecurityManager; using SiteString = System.Security.Util.SiteString; using PermissionSet = System.Security.PermissionSet; using SecurityElement = System.Security.SecurityElement; using System.Collections; using System.Globalization; [Serializable] [System.Runtime.InteropServices.ComVisible(true)] sealed public class SiteMembershipCondition : IMembershipCondition, IConstantMembershipCondition { //------------------------------------------------------ // // PRIVATE STATE DATA // //----------------------------------------------------- private SiteString m_site; private SecurityElement m_element; //----------------------------------------------------- // // PUBLIC CONSTRUCTORS // //----------------------------------------------------- internal SiteMembershipCondition() { m_site = null; } public SiteMembershipCondition( String site ) { if (site == null) throw new ArgumentNullException( "site" ); m_site = new SiteString( site ); } //------------------------------------------------------ // // PUBLIC ACCESSOR METHODS // //----------------------------------------------------- public String Site { set { if (value == null) throw new ArgumentNullException( "value" ); m_site = new SiteString( value ); } get { if (m_site == null && m_element != null) ParseSite(); if (m_site != null) return m_site.ToString(); else return ""; } } //------------------------------------------------------ // // IMEMBERSHIPCONDITION IMPLEMENTATION // //------------------------------------------------------ public bool Check( Evidence evidence ) { if (evidence == null) return false; IEnumerator enumerator = evidence.GetHostEnumerator(); while (enumerator.MoveNext()) { Object obj = enumerator.Current; if (obj is Site) { if (m_site == null && m_element != null) ParseSite(); if (((Site)obj).GetSiteString().IsSubsetOf( this.m_site )) { return true; } } } return false; } public IMembershipCondition Copy() { if (m_site == null && m_element != null) ParseSite(); return new SiteMembershipCondition( m_site.ToString() ); } public SecurityElement ToXml() { return ToXml( null ); } public void FromXml( SecurityElement e ) { FromXml( e, null ); } public SecurityElement ToXml( PolicyLevel level ) { if (m_site == null && m_element != null) ParseSite(); SecurityElement root = new SecurityElement( "IMembershipCondition" ); System.Security.Util.XMLUtil.AddClassAttribute( root, this.GetType(), "System.Security.Policy.SiteMembershipCondition" ); // If you hit this assert then most likely you are trying to change the name of this class. // This is ok as long as you change the hard coded string above and change the assert below. BCLDebug.Assert( this.GetType().FullName.Equals( "System.Security.Policy.SiteMembershipCondition" ), "Class name changed!" ); root.AddAttribute( "version", "1" ); if (m_site != null) root.AddAttribute( "Site", m_site.ToString() ); return root; } public void FromXml( SecurityElement e, PolicyLevel level ) { if (e == null) throw new ArgumentNullException("e"); if (!e.Tag.Equals( "IMembershipCondition" )) { throw new ArgumentException( Environment.GetResourceString( "Argument_MembershipConditionElement" ) ); } lock (this) { m_site = null; m_element = e; } } private void ParseSite() { lock (this) { if (m_element == null) return; String elSite = m_element.Attribute( "Site" ); if (elSite == null) throw new ArgumentException( Environment.GetResourceString( "Argument_SiteCannotBeNull" ) ); else m_site = new SiteString( elSite ); m_element = null; } } public override bool Equals( Object o ) { SiteMembershipCondition that = (o as SiteMembershipCondition); if (that != null) { if (this.m_site == null && this.m_element != null) this.ParseSite(); if (that.m_site == null && that.m_element != null) that.ParseSite(); if( Equals (this.m_site, that.m_site )) { return true; } } return false; } public override int GetHashCode() { if (m_site == null && m_element != null) ParseSite(); if (m_site != null) { return m_site.GetHashCode(); } else { return typeof( SiteMembershipCondition ).GetHashCode(); } } public override String ToString() { if (m_site == null && m_element != null) ParseSite(); if (m_site != null) return String.Format( CultureInfo.CurrentCulture, Environment.GetResourceString( "Site_ToStringArg" ), m_site ); else return Environment.GetResourceString( "Site_ToString" ); } } }
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