Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / clr / src / BCL / System / Security / Policy / Zone.cs / 1 / Zone.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== // // Zone.cs // // Zone is an IIdentity representing Internet/Intranet/MyComputer etc. // namespace System.Security.Policy { using System.Security.Util; using ZoneIdentityPermission = System.Security.Permissions.ZoneIdentityPermission; using System.Runtime.CompilerServices; using System.Runtime.Serialization; [Serializable] [System.Runtime.InteropServices.ComVisible(true)] sealed public class Zone : IIdentityPermissionFactory, IBuiltInEvidence { [OptionalField(VersionAdded = 2)] private String m_url; private SecurityZone m_zone; private static readonly String[] s_names = {"MyComputer", "Intranet", "Trusted", "Internet", "Untrusted", "NoZone"}; internal Zone() { m_url = null; m_zone = SecurityZone.NoZone; } public Zone(SecurityZone zone) { if (zone < SecurityZone.NoZone || zone > SecurityZone.Untrusted) throw new ArgumentException( Environment.GetResourceString( "Argument_IllegalZone" ) ); m_url = null; m_zone = zone; } private Zone(String url) { m_url = url; m_zone = SecurityZone.NoZone; } public static Zone CreateFromUrl( String url ) { if (url == null) throw new ArgumentNullException( "url" ); return new Zone( url ); } [MethodImplAttribute(MethodImplOptions.InternalCall)] private extern static SecurityZone _CreateFromUrl( String url ); public IPermission CreateIdentityPermission( Evidence evidence ) { return new ZoneIdentityPermission( SecurityZone ); } public SecurityZone SecurityZone { get { if (m_url != null) m_zone = _CreateFromUrl( m_url ); return m_zone; } } public override bool Equals(Object o) { if (o is Zone) { Zone z = (Zone) o; return SecurityZone == z.SecurityZone; } return false; } public override int GetHashCode() { return (int)SecurityZone; } public Object Copy() { Zone z = new Zone(); z.m_zone = m_zone; z.m_url = m_url; return z; } internal SecurityElement ToXml() { SecurityElement elem = new SecurityElement( "System.Security.Policy.Zone" ); // 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.Zone" ), "Class name changed!" ); elem.AddAttribute( "version", "1" ); if (SecurityZone != SecurityZone.NoZone) elem.AddChild( new SecurityElement( "Zone", s_names[(int)SecurityZone] ) ); else elem.AddChild( new SecurityElement( "Zone", s_names[s_names.Length-1] ) ); return elem; } ///int IBuiltInEvidence.OutputToBuffer( char[] buffer, int position, bool verbose ) { buffer[position] = BuiltInEvidenceHelper.idZone; BuiltInEvidenceHelper.CopyIntToCharArray( (int)SecurityZone, buffer, position + 1 ); return position + 3; } /// int IBuiltInEvidence.GetRequiredSize(bool verbose) { return 3; } /// int IBuiltInEvidence.InitFromBuffer( char[] buffer, int position ) { m_url = null; m_zone = (SecurityZone)BuiltInEvidenceHelper.GetIntFromCharArray(buffer, position); return position + 2; } public override String ToString() { return ToXml().ToString(); } // INormalizeForIsolatedStorage is not implemented for startup perf // equivalent to INormalizeForIsolatedStorage.Normalize() internal Object Normalize() { return s_names[(int)SecurityZone]; } } }
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