Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Core / CSharp / MS / Internal / AppModel / SiteOfOriginContainer.cs / 1305600 / SiteOfOriginContainer.cs
//------------------------------------------------------------------------------
//
//
// Copyright (C) Microsoft Corporation. All rights reserved.
//
//
// 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.
//
// History:
// 06/16/2005: [....] - Initial creation.
//-----------------------------------------------------------------------------
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.Deployment.Application;
using System.Security;
using System.Security.Permissions;
using MS.Internal.PresentationCore;
namespace MS.Internal.AppModel
{
///
/// 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.
///
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 + " " +
System.Threading.Thread.CurrentThread.ManagedThreadId +
": 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
///
/// Critical: sets critical data _siteOfOriginForClickOnceApp.
/// TreatAsSafe: the source we set it to is trusted. It is also safe to get the app's site of origin.
///
internal static Uri SiteOfOriginForClickOnceApp
{
[SecurityCritical, SecurityTreatAsSafe, FriendAccessAllowed]
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)
{
if (_browserSource.Value != null)
{
_siteOfOriginForClickOnceApp = new SecurityCriticalDataForSet(_browserSource.Value);
}
else if (ApplicationDeployment.IsNetworkDeployed)
{
_siteOfOriginForClickOnceApp = new SecurityCriticalDataForSet(GetDeploymentUri());
}
else
{
_siteOfOriginForClickOnceApp = new SecurityCriticalDataForSet(null);
}
}
Invariant.Assert(_siteOfOriginForClickOnceApp != null);
return _siteOfOriginForClickOnceApp.Value.Value;
}
}
///
/// Critical - Whatever is set here will be treated as site of origin.
///
internal static Uri BrowserSource
{
get
{
return _browserSource.Value;
}
[SecurityCritical, FriendAccessAllowed]
set
{
_browserSource.Value = value;
}
}
#endregion
//------------------------------------------------------
//
// Public Constructors
//
//-----------------------------------------------------
#region Public Constructors
///
/// Default Constructor
///
internal SiteOfOriginContainer() : base(FileAccess.Read)
{
}
#endregion
//------------------------------------------------------
//
// Public Properties
//
//------------------------------------------------------
// None
//-----------------------------------------------------
//
// Public Methods
//
//------------------------------------------------------
#region Public Methods
///
///
public override bool PartExists(Uri uri)
{
return true;
}
#endregion
//-----------------------------------------------------
//
// Public Events
//
//-----------------------------------------------------
// None
//-----------------------------------------------------
//
// Internal Constructors
//
//------------------------------------------------------
// None
//-----------------------------------------------------
//
// Internal Properties
//
//------------------------------------------------------
#region Internal Properties
///
/// Critical: sets BooleanSwitch.Enabled which LinkDemands
/// TreatAsSafe: ok to enable tracing
///
internal static bool TraceSwitchEnabled
{
get
{
return _traceSwitch.Enabled;
}
[SecurityCritical, SecurityTreatAsSafe]
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
///
/// This method creates a SiteOfOriginPart which will create a WebRequest
/// to access files at the site of origin.
///
///
///
/// Critical - Performs an elevation to access ApplicationIdentity
/// TreatAsSafe - Returns the Uri the .application/.xapp was launched from if the application was network deployed.
/// This will not work for a standalone application due to the invariant assert. This information is
/// not considered critical because an application is allowed to know where it was deployed from just
/// not the local path it is running from.
/// This information is also typically available from ApplicationDeployment.CurrentDeployment.ActivationUri
/// or ApplicationDeployment.CurrentDeployment.UpdateLocation but those properties are null for applications
/// that do not take Uri parameters and do not receive updates from the web. Neither of those properties
/// requires an assert to access and are available in partial trust. We are not using them because the need
/// for a site of origin is not dependent on update or uri parameters.
///
[SecurityCritical, SecurityTreatAsSafe]
private static Uri GetDeploymentUri()
{
Invariant.Assert(ApplicationDeployment.IsNetworkDeployed);
AppDomain currentDomain = AppDomain.CurrentDomain;
ApplicationIdentity ident = null;
string codeBase = null;
SecurityPermission p1 = new SecurityPermission(SecurityPermissionFlag.ControlDomainPolicy);
p1.Assert();
try
{
ident = currentDomain.ApplicationIdentity; // ControlDomainPolicy
}
finally
{
CodeAccessPermission.RevertAssert();
}
SecurityPermission p2 = new SecurityPermission(SecurityPermissionFlag.UnmanagedCode);
p2.Assert();
try
{
codeBase = ident.CodeBase; // Unmanaged Code permission
}
finally
{
CodeAccessPermission.RevertAssert();
}
return new Uri(new Uri(codeBase), new Uri(".", UriKind.Relative));
}
#endregion
//-----------------------------------------------------
//
// Private Fields
//
//------------------------------------------------------
#region Private Members
private static SecurityCriticalDataForSet _browserSource;
private static SecurityCriticalDataForSet? _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
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
//------------------------------------------------------------------------------
//
//
// Copyright (C) Microsoft Corporation. All rights reserved.
//
//
// 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.
//
// History:
// 06/16/2005: [....] - Initial creation.
//-----------------------------------------------------------------------------
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.Deployment.Application;
using System.Security;
using System.Security.Permissions;
using MS.Internal.PresentationCore;
namespace MS.Internal.AppModel
{
///
/// 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.
///
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 + " " +
System.Threading.Thread.CurrentThread.ManagedThreadId +
": 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
///
/// Critical: sets critical data _siteOfOriginForClickOnceApp.
/// TreatAsSafe: the source we set it to is trusted. It is also safe to get the app's site of origin.
///
internal static Uri SiteOfOriginForClickOnceApp
{
[SecurityCritical, SecurityTreatAsSafe, FriendAccessAllowed]
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)
{
if (_browserSource.Value != null)
{
_siteOfOriginForClickOnceApp = new SecurityCriticalDataForSet(_browserSource.Value);
}
else if (ApplicationDeployment.IsNetworkDeployed)
{
_siteOfOriginForClickOnceApp = new SecurityCriticalDataForSet(GetDeploymentUri());
}
else
{
_siteOfOriginForClickOnceApp = new SecurityCriticalDataForSet(null);
}
}
Invariant.Assert(_siteOfOriginForClickOnceApp != null);
return _siteOfOriginForClickOnceApp.Value.Value;
}
}
///
/// Critical - Whatever is set here will be treated as site of origin.
///
internal static Uri BrowserSource
{
get
{
return _browserSource.Value;
}
[SecurityCritical, FriendAccessAllowed]
set
{
_browserSource.Value = value;
}
}
#endregion
//------------------------------------------------------
//
// Public Constructors
//
//-----------------------------------------------------
#region Public Constructors
///
/// Default Constructor
///
internal SiteOfOriginContainer() : base(FileAccess.Read)
{
}
#endregion
//------------------------------------------------------
//
// Public Properties
//
//------------------------------------------------------
// None
//-----------------------------------------------------
//
// Public Methods
//
//------------------------------------------------------
#region Public Methods
///
///
public override bool PartExists(Uri uri)
{
return true;
}
#endregion
//-----------------------------------------------------
//
// Public Events
//
//-----------------------------------------------------
// None
//-----------------------------------------------------
//
// Internal Constructors
//
//------------------------------------------------------
// None
//-----------------------------------------------------
//
// Internal Properties
//
//------------------------------------------------------
#region Internal Properties
///
/// Critical: sets BooleanSwitch.Enabled which LinkDemands
/// TreatAsSafe: ok to enable tracing
///
internal static bool TraceSwitchEnabled
{
get
{
return _traceSwitch.Enabled;
}
[SecurityCritical, SecurityTreatAsSafe]
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
///
/// This method creates a SiteOfOriginPart which will create a WebRequest
/// to access files at the site of origin.
///
///
///
/// Critical - Performs an elevation to access ApplicationIdentity
/// TreatAsSafe - Returns the Uri the .application/.xapp was launched from if the application was network deployed.
/// This will not work for a standalone application due to the invariant assert. This information is
/// not considered critical because an application is allowed to know where it was deployed from just
/// not the local path it is running from.
/// This information is also typically available from ApplicationDeployment.CurrentDeployment.ActivationUri
/// or ApplicationDeployment.CurrentDeployment.UpdateLocation but those properties are null for applications
/// that do not take Uri parameters and do not receive updates from the web. Neither of those properties
/// requires an assert to access and are available in partial trust. We are not using them because the need
/// for a site of origin is not dependent on update or uri parameters.
///
[SecurityCritical, SecurityTreatAsSafe]
private static Uri GetDeploymentUri()
{
Invariant.Assert(ApplicationDeployment.IsNetworkDeployed);
AppDomain currentDomain = AppDomain.CurrentDomain;
ApplicationIdentity ident = null;
string codeBase = null;
SecurityPermission p1 = new SecurityPermission(SecurityPermissionFlag.ControlDomainPolicy);
p1.Assert();
try
{
ident = currentDomain.ApplicationIdentity; // ControlDomainPolicy
}
finally
{
CodeAccessPermission.RevertAssert();
}
SecurityPermission p2 = new SecurityPermission(SecurityPermissionFlag.UnmanagedCode);
p2.Assert();
try
{
codeBase = ident.CodeBase; // Unmanaged Code permission
}
finally
{
CodeAccessPermission.RevertAssert();
}
return new Uri(new Uri(codeBase), new Uri(".", UriKind.Relative));
}
#endregion
//-----------------------------------------------------
//
// Private Fields
//
//------------------------------------------------------
#region Private Members
private static SecurityCriticalDataForSet _browserSource;
private static SecurityCriticalDataForSet? _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
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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