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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
namespace System.Security.Permissions
{
using System;
using System.Security.Util;
using System.IO;
using System.Text;
using System.Collections;
using System.Collections.Generic;
using System.Globalization;
using System.Runtime.Serialization;
using System.Diagnostics.Contracts;
[System.Runtime.InteropServices.ComVisible(true)]
#if FEATURE_SERIALIZATION
[Serializable]
#endif
sealed public class UrlIdentityPermission : CodeAccessPermission, IBuiltInPermission
{
//------------------------------------------------------
//
// PRIVATE STATE DATA
//
//------------------------------------------------------
[OptionalField(VersionAdded = 2)]
private bool m_unrestricted;
[OptionalField(VersionAdded = 2)]
private URLString[] m_urls;
//------------------------------------------------------
//
// PUBLIC CONSTRUCTORS
//
//------------------------------------------------------
public UrlIdentityPermission(PermissionState state)
{
if (state == PermissionState.Unrestricted)
{
m_unrestricted = true;
}
else if (state == PermissionState.None)
{
m_unrestricted = false;
}
else
{
throw new ArgumentException(Environment.GetResourceString("Argument_InvalidPermissionState"));
}
}
public UrlIdentityPermission( String site )
{
if (site == null)
throw new ArgumentNullException( nameof(site) );
Contract.EndContractBlock();
Url = site;
}
internal UrlIdentityPermission( URLString site )
{
m_unrestricted = false;
m_urls = new URLString[1];
m_urls[0] = site;
}
// Internal function to append all the urls in m_urls to the input originList
internal void AppendOrigin(ArrayList originList)
{
if (m_urls == null)
originList.Add("");
else
{
int n;
for(n = 0; n < this.m_urls.Length; n++)
originList.Add(m_urls[n].ToString());
}
}
//------------------------------------------------------
//
// PUBLIC ACCESSOR METHODS
//
//------------------------------------------------------
public String Url
{
set
{
m_unrestricted = false;
if(value == null || value.Length == 0)
m_urls = null;
else
{
m_urls = new URLString[1];
m_urls[0] = new URLString( value );
}
}
get
{
if(m_urls == null)
return "";
if(m_urls.Length == 1)
return m_urls[0].ToString();
throw new NotSupportedException(Environment.GetResourceString("NotSupported_AmbiguousIdentity"));
}
}
//------------------------------------------------------
//
// PRIVATE AND PROTECTED HELPERS FOR ACCESSORS AND CONSTRUCTORS
//
//------------------------------------------------------
//------------------------------------------------------
//
// CODEACCESSPERMISSION IMPLEMENTATION
//
//------------------------------------------------------
//------------------------------------------------------
//
// IPERMISSION IMPLEMENTATION
//
//------------------------------------------------------
public override IPermission Copy()
{
UrlIdentityPermission perm = new UrlIdentityPermission( PermissionState.None );
perm.m_unrestricted = this.m_unrestricted;
if (this.m_urls != null)
{
perm.m_urls = new URLString[this.m_urls.Length];
int n;
for(n = 0; n < this.m_urls.Length; n++)
perm.m_urls[n] = (URLString)this.m_urls[n].Copy();
}
return perm;
}
public override bool IsSubsetOf(IPermission target)
{
if (target == null)
{
if(m_unrestricted)
return false;
if(m_urls == null)
return true;
if(m_urls.Length == 0)
return true;
return false;
}
UrlIdentityPermission that = target as UrlIdentityPermission;
if(that == null)
throw new ArgumentException(Environment.GetResourceString("Argument_WrongType", this.GetType().FullName));
if(that.m_unrestricted)
return true;
if(m_unrestricted)
return false;
if(this.m_urls != null)
{
foreach(URLString usThis in this.m_urls)
{
bool bOK = false;
if(that.m_urls != null)
{
foreach(URLString usThat in that.m_urls)
{
if(usThis.IsSubsetOf(usThat))
{
bOK = true;
break;
}
}
}
if(!bOK)
return false;
}
}
return true;
}
public override IPermission Intersect(IPermission target)
{
if (target == null)
return null;
UrlIdentityPermission that = target as UrlIdentityPermission;
if(that == null)
throw new ArgumentException(Environment.GetResourceString("Argument_WrongType", this.GetType().FullName));
if(this.m_unrestricted && that.m_unrestricted)
{
UrlIdentityPermission res = new UrlIdentityPermission(PermissionState.None);
res.m_unrestricted = true;
return res;
}
if(this.m_unrestricted)
return that.Copy();
if(that.m_unrestricted)
return this.Copy();
if(this.m_urls == null || that.m_urls == null || this.m_urls.Length == 0 || that.m_urls.Length == 0)
return null;
List<URLString> alUrls = new List<URLString>();
foreach(URLString usThis in this.m_urls)
{
foreach(URLString usThat in that.m_urls)
{
URLString usInt = (URLString)usThis.Intersect(usThat);
if(usInt != null)
alUrls.Add(usInt);
}
}
if(alUrls.Count == 0)
return null;
UrlIdentityPermission result = new UrlIdentityPermission(PermissionState.None);
result.m_urls = alUrls.ToArray();
return result;
}
public override IPermission Union(IPermission target)
{
if (target == null)
{
if((this.m_urls == null || this.m_urls.Length == 0) && !this.m_unrestricted)
return null;
return this.Copy();
}
UrlIdentityPermission that = target as UrlIdentityPermission;
if(that == null)
throw new ArgumentException(Environment.GetResourceString("Argument_WrongType", this.GetType().FullName));
if(this.m_unrestricted || that.m_unrestricted)
{
UrlIdentityPermission res = new UrlIdentityPermission(PermissionState.None);
res.m_unrestricted = true;
return res;
}
if (this.m_urls == null || this.m_urls.Length == 0)
{
if(that.m_urls == null || that.m_urls.Length == 0)
return null;
return that.Copy();
}
if(that.m_urls == null || that.m_urls.Length == 0)
return this.Copy();
List<URLString> alUrls = new List<URLString>();
foreach(URLString usThis in this.m_urls)
alUrls.Add(usThis);
foreach(URLString usThat in that.m_urls)
{
bool bDupe = false;
foreach(URLString us in alUrls)
{
if(usThat.Equals(us))
{
bDupe = true;
break;
}
}
if(!bDupe)
alUrls.Add(usThat);
}
UrlIdentityPermission result = new UrlIdentityPermission(PermissionState.None);
result.m_urls = alUrls.ToArray();
return result;
}
/// <internalonly/>
int IBuiltInPermission.GetTokenIndex()
{
return UrlIdentityPermission.GetTokenIndex();
}
internal static int GetTokenIndex()
{
return BuiltInPermissionIndex.UrlIdentityPermissionIndex;
}
}
}
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