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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.
//
//
// Description:
// SiteOfOriginContainer is an implementation of the abstract Package class.
// It contains nontrivial overrides for GetPartCore and Exists.
// Many of the methods on Package are not applicable to loading application
// resources, so the SiteOfOriginContainer implementations of these methods throw
// the NotSupportedException.
//
using System;
using System.IO.Packaging;
using System.IO;
using System.Collections.Generic;
using System.Windows.Resources;
using System.Resources;
using System.Reflection;
using System.Globalization;
using System.Windows;
using System.Windows.Navigation;
using System.Security;
using MS.Internal.PresentationCore;
namespace MS.Internal.AppModel
{
/// <summary>
/// SiteOfOriginContainer is an implementation of the abstract Package class.
/// It contains nontrivial overrides for GetPartCore and Exists.
/// Many of the methods on Package are not applicable to loading files
/// so the SiteOfOriginContainer implementations of these methods throw
/// the NotSupportedException.
/// </summary>
internal class SiteOfOriginContainer : System.IO.Packaging.Package
{
//------------------------------------------------------
//
// Static Methods
//
//------------------------------------------------------
#region Static Methods
internal static Uri SiteOfOrigin
{
[FriendAccessAllowed]
get
{
Uri siteOfOrigin = SiteOfOriginForClickOnceApp;
if (siteOfOrigin == null)
{
// Calling FixFileUri because BaseDirectory will be a c:\\ style path
siteOfOrigin = BaseUriHelper.FixFileUri(new Uri(System.AppDomain.CurrentDomain.BaseDirectory));
}
#if DEBUG
if (_traceSwitch.Enabled)
System.Diagnostics.Trace.TraceInformation(
DateTime.Now.ToLongTimeString() + " " + DateTime.Now.Millisecond + " " +
Environment.CurrentManagedThreadId +
": SiteOfOriginContainer: returning site of origin " + siteOfOrigin);
#endif
return siteOfOrigin;
}
}
// we separated this from the rest of the code because this code is used for media permission
// tests in partial trust but we want to do this without hitting the code path for regular exe's
// as in the code above. This will get hit for click once apps, xbaps, xaml and xps
internal static Uri SiteOfOriginForClickOnceApp
{
get
{
// The ClickOnce API, ApplicationDeployment.IsNetworkDeployed, determines whether the app is network-deployed
// by getting the ApplicationDeployment.CurrentDeployment property and catch the exception it can throw.
// The exception is a first chance exception and caught, but it often confuses developers,
// and can also have a perf impact. So we change to cache the value of SiteofOrigin in Dev10 to avoid the
// exception being thrown too many times.
// An alternative is to cache the value of ApplicationDeployment.IsNetworkDeployed.
if (_siteOfOriginForClickOnceApp == null)
{
_siteOfOriginForClickOnceApp = new SecurityCriticalDataForSet<Uri>(null);
}
Invariant.Assert(_siteOfOriginForClickOnceApp != null);
return _siteOfOriginForClickOnceApp.Value.Value;
}
}
internal static Uri BrowserSource
{
get
{
return _browserSource.Value;
}
set
{
_browserSource.Value = value;
}
}
#endregion
//------------------------------------------------------
//
// Public Constructors
//
//------------------------------------------------------
#region Public Constructors
/// <summary>
/// Default Constructor
/// </summary>
internal SiteOfOriginContainer() : base(FileAccess.Read)
{
}
#endregion
//------------------------------------------------------
//
// Public Properties
//
//------------------------------------------------------
// None
//------------------------------------------------------
//
// Public Methods
//
//------------------------------------------------------
#region Public Methods
/// <remarks>
/// If this were to be implemented for http site of origin,
/// it will require a server round trip.
/// </remarks>
/// <param name="uri"></param>
/// <returns></returns>
public override bool PartExists(Uri uri)
{
return true;
}
#endregion
//------------------------------------------------------
//
// Public Events
//
//------------------------------------------------------
// None
//------------------------------------------------------
//
// Internal Constructors
//
//------------------------------------------------------
// None
//------------------------------------------------------
//
// Internal Properties
//
//------------------------------------------------------
#region Internal Properties
internal static bool TraceSwitchEnabled
{
get
{
return _traceSwitch.Enabled;
}
set
{
_traceSwitch.Enabled = value;
}
}
internal static System.Diagnostics.BooleanSwitch _traceSwitch =
new System.Diagnostics.BooleanSwitch("SiteOfOrigin", "SiteOfOriginContainer and SiteOfOriginPart trace messages");
#endregion
//------------------------------------------------------
//
// Internal Methods
//
//------------------------------------------------------
// None
//------------------------------------------------------
//
// Internal Events
//
//------------------------------------------------------
// None
//------------------------------------------------------
//
// Protected Constructors
//
//------------------------------------------------------
// None
//------------------------------------------------------
//
// Protected Methods
//
//------------------------------------------------------
#region Protected Methods
/// <summary>
/// This method creates a SiteOfOriginPart which will create a WebRequest
/// to access files at the site of origin.
/// </summary>
/// <param name="uri"></param>
/// <returns></returns>
protected override PackagePart GetPartCore(Uri uri)
{
#if DEBUG
if (_traceSwitch.Enabled)
System.Diagnostics.Trace.TraceInformation(
DateTime.Now.ToLongTimeString() + " " + DateTime.Now.Millisecond + " " +
Environment.CurrentManagedThreadId +
": SiteOfOriginContainer: Creating SiteOfOriginPart for Uri " + uri);
#endif
return new SiteOfOriginPart(this, uri);
}
#endregion
//------------------------------------------------------
//
// Private Fields
//
//------------------------------------------------------
#region Private Members
private static SecurityCriticalDataForSet<Uri> _browserSource;
private static SecurityCriticalDataForSet<Uri>? _siteOfOriginForClickOnceApp;
#endregion Private Members
//------------------------------------------------------
//
// Uninteresting (but required) overrides
//
//------------------------------------------------------
#region Uninteresting (but required) overrides
protected override PackagePart CreatePartCore(Uri uri, string contentType, CompressionOption compressionOption)
{
return null;
}
protected override void DeletePartCore(Uri uri)
{
throw new NotSupportedException();
}
protected override PackagePart[] GetPartsCore()
{
throw new NotSupportedException();
}
protected override void FlushCore()
{
throw new NotSupportedException();
}
#endregion
}
}
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