First round of dead file removal

experimental/visual_studio_plugin/third_party/Microsoft.VisualStudio.Project/ProjectSecurityChecker.cs

Index: experimental/visual_studio_plugin/third_party/Microsoft.VisualStudio.Project/ProjectSecurityChecker.cs
diff --git a/experimental/visual_studio_plugin/third_party/Microsoft.VisualStudio.Project/ProjectSecurityChecker.cs b/experimental/visual_studio_plugin/third_party/Microsoft.VisualStudio.Project/ProjectSecurityChecker.cs
deleted file mode 100644
index 742ae97f0b2f5589923b8e6174d0d2ef502e2de0..0000000000000000000000000000000000000000
--- a/experimental/visual_studio_plugin/third_party/Microsoft.VisualStudio.Project/ProjectSecurityChecker.cs
+++ /dev/null
@@ -1,841 +0,0 @@
-/// Copyright (c) Microsoft Corporation.  All rights reserved.
-
-using System;
-using System.Collections;
-using System.Collections.Generic;
-using System.Diagnostics;
-using System.Globalization;
-using System.IO;
-using System.Runtime.InteropServices;
-using System.Security.Permissions;
-using System.Text;
-using Microsoft.VisualStudio;
-using Microsoft.VisualStudio.Build.ComInteropWrapper;
-using Microsoft.VisualStudio.Shell;
-using Microsoft.VisualStudio.Shell.Interop;
-using Microsoft.Win32;
-
-namespace Microsoft.VisualStudio.Project
-{
-	/// <summary>
-	/// Does security validation of a project before loading the project
-	/// </summary>
-	public class ProjectSecurityChecker : IDisposable
-	{
-		#region constants
-		/// <summary>
-		/// The dangereous target property.
-		/// </summary>
-		internal const string DangerousTargetProperty = "LoadTimeSensitiveTargets";
-
-		/// <summary>
-		/// The dangereous properties property.
-		/// </summary>
-		internal const string DangerousPropertyProperty = "LoadTimeSensitiveProperties";
-
-		/// <summary>
-		/// The dangereous items property.
-		/// </summary>
-		internal const string DangerousItemsProperty = "LoadTimeSensitiveItems";
-
-		/// <summary>
-		/// The check item locations property.
-		/// </summary>
-		internal const string CheckItemLocationProperty = "LoadTimeCheckItemLocation";
-
-		/// <summary>
-		/// The dangereous list item separator.
-		/// </summary>
-		internal const string DangerousListSeparator = ";";
-
-		/// <summary>
-		/// The project directory property.
-		/// </summary>
-		internal const string ProjectDirectoryProperty = "MSBuildProjectDirectory";
-
-		/// <summary>
-		/// The default dangereous properties.
-		/// </summary>
-		internal const string DefaultDangerousProperties = "LoadTimeSensitiveTargets;LoadTimeSensitiveProperties;LoadTimeSensitiveItems;LoadTimeCheckItemLocation;";
-
-		/// <summary>
-		/// The default dangereous targets.
-		/// </summary>
-		internal const string DefaultDangerousTargets = "Compile;GetFrameworkPaths;AllProjectOutputGroups;AllProjectOutputGroupsDependencies;CopyRunEnvironmentFiles;ResolveComReferences;ResolveAssemblyReferences;ResolveNativeReferences;";
-
-		/// <summary>
-		/// The default dangereous items.
-		/// </summary>
-		internal const string DefaultDangerousItems = ";";
-
-		/// <summary>
-		/// Defined the safe imports subkey in the registry.
-		/// </summary>
-		internal const string SafeImportsSubkey = @"MSBuild\SafeImports";
-		#endregion
-
-		#region fields
-		/// <summary>
-		/// Defines an object that will be a mutex for this object for synchronizing thread calls.
-		/// </summary>
-		private static volatile object Mutex = new object();
-
-		/// <summary>
-		/// Flag determining if the object has been disposed.
-		/// </summary>
-		private bool isDisposed;
-
-		/// <summary>
-		/// The associated project shim for the project file
-		/// </summary>
-		private ProjectShim projectShim;
-
-		/// <summary>
-		/// The security check helper object used to call out to do necessary security checkings.
-		/// </summary>
-		private SecurityCheckHelper securityCheckHelper = new SecurityCheckHelper();
-
-		/// <summary>
-		/// The associated service provider.
-		/// </summary>
-		private IServiceProvider serviceProvider;
-
-		#endregion
-
-		#region properties
-		/// <summary>
-		/// The associated project shim for the project file
-		/// </summary>
-		/// <devremark>The project shim is made internal in order to be able to be passed to the user project.</devremark>
-		internal protected ProjectShim ProjectShim
-		{
-			get { return this.projectShim; }
-		}
-
-		/// <summary>
-		/// The security check helper that will be used to perform the necessary checkings.
-		/// </summary>
-		protected SecurityCheckHelper SecurityCheckHelper
-		{
-			get { return this.securityCheckHelper; }
-		}
-
-		/// <summary>
-		/// The associated service provider.
-		/// </summary>
-		protected IServiceProvider ServiceProvider
-		{
-			get
-			{
-				return this.serviceProvider;
-			}
-		}
-		#endregion
-
-		#region ctors
-		/// <summary>
-		/// Overloaded Constructor 
-		/// </summary>
-		/// <param name="projectFilePath">path to the project file</param>
-		/// <param name="serviceProvider">A service provider.</param>
-		public ProjectSecurityChecker(IServiceProvider serviceProvider, string projectFilePath)
-		{
-			if(serviceProvider == null)
-			{
-				throw new ArgumentNullException("serviceProvider");
-			}
-
-			if(String.IsNullOrEmpty(projectFilePath))
-			{
-				throw new ArgumentException(SR.GetString(SR.ParameterCannotBeNullOrEmpty, CultureInfo.CurrentUICulture), "projectFilePath");
-			}
-
-			this.serviceProvider = serviceProvider;
-
-			// Instantiate a new project shim that we are going to use for security checkings.
-			EngineShim engine = new EngineShim();
-			this.projectShim = engine.CreateNewProject();
-			this.projectShim.Load(projectFilePath);
-		}
-		#endregion
-
-		#region IDisposable Members
-
-		/// <summary>
-		/// The IDispose interface Dispose method for disposing the object determinastically.
-		/// </summary>
-		public void Dispose()
-		{
-			this.Dispose(true);
-			GC.SuppressFinalize(this);
-		}
-
-		#endregion
-
-		#region virtual methods
-		/// <summary>
-		/// Check if the project is safe at load/design time
-		/// </summary>
-		/// <param name="securityErrorMessage">If the project is not safe contains an error message, describing the reason.</param>
-		/// <returns>true if the project is safe, false otherwise</returns>
-		[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1021:AvoidOutParameters", MessageId = "0#",
-			Justification = "The error message needs to be an out parameter. We are following here the Try... method patterns.")]
-		public virtual bool IsProjectSafeAtLoadTime(out string securityErrorMessage)
-		{
-			securityErrorMessage = String.Empty;
-
-			StringBuilder securityMessageMaker = new StringBuilder();
-			int counter = 0;
-			string tempMessage;
-
-			// STEP 1: Check direct imports.
-			if(!this.IsProjectSafeWithImports(out tempMessage))
-			{
-				ProjectSecurityChecker.FormatMessage(securityMessageMaker, ++counter, tempMessage);
-				securityErrorMessage = tempMessage;
-			}
-
-			// STEP 2: Check dangerous properties
-			if(!this.IsProjectSafeWithProperties(out tempMessage))
-			{
-				ProjectSecurityChecker.FormatMessage(securityMessageMaker, ++counter, tempMessage);
-				securityErrorMessage = tempMessage;
-			}
-
-			// STEP 3: Check dangerous targets
-			if(!this.IsProjectSafeWithTargets(out tempMessage))
-			{
-				ProjectSecurityChecker.FormatMessage(securityMessageMaker, ++counter, tempMessage);
-				securityErrorMessage = tempMessage;
-			}
-
-			// STEP 4: Check dangerous items
-			if(!this.IsProjectSafeWithItems(out tempMessage))
-			{
-				ProjectSecurityChecker.FormatMessage(securityMessageMaker, ++counter, tempMessage);
-				securityErrorMessage = tempMessage;
-			}
-
-			// STEP 5: Check UsingTask tasks
-			if(!this.IsProjectSafeWithUsingTasks(out tempMessage))
-			{
-				ProjectSecurityChecker.FormatMessage(securityMessageMaker, ++counter, tempMessage);
-				securityErrorMessage = tempMessage;
-			}
-
-			// STEP 6: Check for items defined within the LoadTimeCheckItemLocation, whether they are defined in safe locations
-			if(!this.CheckItemsLocation(out tempMessage))
-			{
-				securityMessageMaker.AppendFormat(CultureInfo.CurrentCulture, "{0}: ", (++counter).ToString(CultureInfo.CurrentCulture));
-				securityMessageMaker.AppendLine(tempMessage);
-				securityErrorMessage = tempMessage;
-			}
-
-			if(counter > 1)
-			{
-				securityErrorMessage = securityMessageMaker.ToString();
-			}
-
-			return String.IsNullOrEmpty(securityErrorMessage);
-		}
-
-		/// <summary>
-		/// Checks if the project is safe with imports. The project file is considered
-		/// unsafe if it contains any imports not registered in the safe import regkey.
-		/// </summary>
-		/// <param name="securityErrorMessage">At return describes the reason why the projects is not considered safe.</param>
-		/// <returns>true if the project is safe regarding imports.</returns>
-		[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1021:AvoidOutParameters", MessageId = "0#",
-			Justification = "The error message needs to be an out parameter. We are following here the Try... method patterns.")]
-		protected virtual bool IsProjectSafeWithImports(out string securityErrorMessage)
-		{
-			securityErrorMessage = String.Empty;
-
-			// Now get the directly imports and do the comparision.
-			string[] directImports = this.securityCheckHelper.GetDirectlyImportedProjects(this.projectShim);
-			if(directImports != null && directImports.Length > 0)
-			{
-				IList<string> safeImportList = ProjectSecurityChecker.GetSafeImportList();
-
-				for(int i = 0; i < directImports.Length; i++)
-				{
-					string fileToCheck = directImports[i];
-					if(!ProjectSecurityChecker.IsSafeImport(safeImportList, fileToCheck))
-					{
-						using(RegistryKey root = VSRegistry.RegistryRoot(__VsLocalRegistryType.RegType_Configuration))
-						{
-							securityErrorMessage = String.Format(CultureInfo.CurrentCulture, SR.GetString(SR.DetailsImport, CultureInfo.CurrentUICulture), Path.GetFileName(this.projectShim.FullFileName), fileToCheck, Path.Combine(root.Name, SafeImportsSubkey));
-						}
-
-						return false;
-					}
-				}
-			}
-
-			return true;
-		}
-
-
-
-		/// <summary>
-		/// Checks if the project is safe regarding properties.
-		/// </summary>
-		/// <param name="securityErrorMessage">At return describes the reason why the projects is not considered safe.</param>       
-		/// <returns>true if the project has only safe properties.</returns>
-		[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1021:AvoidOutParameters", MessageId = "0#",
-			Justification = "The error message needs to be an out parameter. We are following here the Try... method patterns.")]
-		protected virtual bool IsProjectSafeWithProperties(out string securityErrorMessage)
-		{
-			securityErrorMessage = String.Empty;
-
-			// Now ask the security check heper for the safe properties.
-			string reasonForFailure;
-			bool isUserFile;
-			bool isProjectSafe = this.securityCheckHelper.IsProjectSafe(ProjectSecurityChecker.DangerousPropertyProperty,
-																		ProjectSecurityChecker.DefaultDangerousProperties,
-																		this.projectShim,
-																		null,
-																		SecurityCheckPass.Properties,
-																		out reasonForFailure,
-																		out isUserFile);
-
-			if(!isProjectSafe)
-			{
-				securityErrorMessage = this.GetMessageString(reasonForFailure, SR.DetailsProperty);
-			}
-
-			return isProjectSafe;
-		}
-
-		/// <summary>
-		/// Checks if the project is safe regarding targets.
-		/// </summary>
-		/// <param name="securityErrorMessage">At return describes the reason why the projects is not considered safe.</param>       
-		/// <returns>true if the project has only safe targets.</returns>
-		[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1021:AvoidOutParameters", MessageId = "0#",
-			Justification = "The error message needs to be an out parameter. We are following here the Try... method patterns.")]
-		protected virtual bool IsProjectSafeWithTargets(out string securityErrorMessage)
-		{
-			securityErrorMessage = String.Empty;
-
-			// Now ask the security check heper for the safe targets.
-			string reasonForFailure;
-			bool isUserFile;
-			bool isProjectSafe = this.securityCheckHelper.IsProjectSafe(ProjectSecurityChecker.DangerousTargetProperty,
-																		ProjectSecurityChecker.DefaultDangerousTargets,
-																		this.projectShim,
-																		null,
-																		SecurityCheckPass.Targets,
-																		out reasonForFailure,
-																		out isUserFile);
-
-			if(!isProjectSafe)
-			{
-				securityErrorMessage = this.GetMessageString(reasonForFailure, SR.DetailsTarget);
-			}
-
-			return isProjectSafe;
-		}
-
-		/// <summary>
-		/// Checks if the project is safe regarding items.
-		/// </summary>
-		/// <param name="securityErrorMessage">At return describes the reason why the projects is not considered safe.</param>       
-		/// <returns>true if the project has only safe items.</returns>
-		[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1021:AvoidOutParameters", MessageId = "0#",
-			Justification = "The error message needs to be an out parameter. We are following here the Try... method patterns.")]
-		protected virtual bool IsProjectSafeWithItems(out string securityErrorMessage)
-		{
-			securityErrorMessage = String.Empty;
-
-			// Now ask the security check heper for the safe items.
-			string reasonForFailure;
-			bool isUserFile;
-			bool isProjectSafe = this.securityCheckHelper.IsProjectSafe(ProjectSecurityChecker.DangerousItemsProperty,
-																		ProjectSecurityChecker.DefaultDangerousItems,
-																		this.projectShim,
-																		null,
-																		SecurityCheckPass.Items,
-																		out reasonForFailure,
-																		out isUserFile);
-
-			if(!isProjectSafe)
-			{
-				securityErrorMessage = this.GetMessageString(reasonForFailure, SR.DetailsItem);
-			}
-
-			return isProjectSafe;
-		}
-
-		/// <summary>
-		/// Checks if the project is safe with using tasks.
-		/// </summary>
-		/// <param name="securityErrorMessage">At return describes the reason why the projects is not considered safe.</param>
-		/// <returns>true if the project has no using tasks defined in the project file.</returns>
-		[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1021:AvoidOutParameters", MessageId = "0#",
-			Justification = "The error message needs to be an out parameter. We are following here the Try... method patterns.")]
-		protected virtual bool IsProjectSafeWithUsingTasks(out string securityErrorMessage)
-		{
-			securityErrorMessage = String.Empty;
-
-			string[] usingTasks = this.securityCheckHelper.GetNonImportedUsingTasks(this.projectShim);
-
-			if(usingTasks != null && usingTasks.Length > 0)
-			{
-				securityErrorMessage = String.Format(CultureInfo.CurrentCulture, SR.GetString(SR.DetailsUsingTask, CultureInfo.CurrentUICulture), Path.GetFileName(this.projectShim.FullFileName), usingTasks[0]);
-				return false;
-			}
-
-			return true;
-		}
-
-		/// <summary>
-		///  If the project contains the LoadTimeCheckItemsWithinProjectCone property, the method verifies that all the items listed in there are within the project cone.
-		///  Also checks that the project is not in Program Files or Windows if the property was there.
-		/// </summary>
-		/// <param name="securityErrorMessage">At return describes the reason why the projects is not considered safe.</param>
-		/// <returns>true if the project has no badly defined project items.</returns>
-		[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1021:AvoidOutParameters", MessageId = "0#",
-			Justification = "The error message needs to be an out parameter. We are following here the Try... method patterns.")]
-		protected virtual bool CheckItemsLocation(out string securityErrorMessage)
-		{
-			securityErrorMessage = String.Empty;
-
-			// Get the <LoadTimeCheckItemLocation> property from the project
-			string itemLocationProperty = this.projectShim.GetEvaluatedProperty(ProjectSecurityChecker.CheckItemLocationProperty);
-
-			if(String.IsNullOrEmpty(itemLocationProperty))
-			{
-				return true;
-			}
-
-			// Takes a semicolon separated list of entries, splits them and puts them into a list with values trimmed.
-			string[] items = itemLocationProperty.Split(ProjectSecurityChecker.DangerousListSeparator.ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
-
-			IList<string> itemsToCheck = new List<string>();
-			foreach(string item in items)
-			{
-				itemsToCheck.Add(item.Trim());
-			}
-
-			// Now check the items for being defined in a safe location.
-			string reasonForFailure;
-			ItemSecurityChecker itemsSecurityChecker = new ItemSecurityChecker(this.serviceProvider, this.projectShim.FullFileName);
-			if(!itemsSecurityChecker.CheckItemsSecurity(this.projectShim, itemsToCheck, out reasonForFailure))
-			{
-				securityErrorMessage = String.Format(CultureInfo.CurrentCulture, SR.GetString(SR.DetailsItemLocation, CultureInfo.CurrentUICulture), Path.GetFileName(this.projectShim.FullFileName), reasonForFailure);
-				return false;
-			}
-
-			return true;
-		}
-
-
-		/// <summary>
-		/// The method that does the cleanup.
-		/// </summary>
-		/// <param name="disposing">true if called from IDispose.Dispose; false if called from Finalizer.</param>
-		protected virtual void Dispose(bool disposing)
-		{
-			// Everybody can go here.
-			if(!this.isDisposed)
-			{
-				// Synchronize calls to the Dispose simultaniously.
-				lock(Mutex)
-				{
-					if(disposing)
-					{
-						this.projectShim.ParentEngine.UnloadProject(this.projectShim);
-					}
-
-					this.isDisposed = true;
-				}
-			}
-		}
-		#endregion
-
-		#region helper methods
-		/// <summary>
-		/// Gets a message string that has an associated format with a reason for failure.
-		/// </summary>
-		/// <param name="reasonForFailure"></param>
-		/// <param name="resourceID"></param>
-		/// <returns></returns>
-		internal string GetMessageString(string reasonForFailure, string resourceID)
-		{
-			Debug.Assert(!String.IsNullOrEmpty(reasonForFailure), "The reason for failure should not be empty or null");
-			Debug.Assert(!String.IsNullOrEmpty(resourceID), "The resource id string cannot be empty");
-
-			return String.Format(CultureInfo.CurrentCulture, SR.GetString(resourceID, Path.GetFileName(this.projectShim.FullFileName), reasonForFailure));
-		}
-
-		/// <summary>
-		/// Generates a format string that will be pushed to the More Detailed dialog.
-		/// </summary>
-		/// <param name="securityMessageMaker">The Stringbuilder object containing the formatted message.</param>
-		/// <param name="counter">The 'issue' number.</param>
-		/// <param name="securityErrorMessage">The message to format.</param>
-		private static void FormatMessage(StringBuilder securityMessageMaker, int counter, string securityErrorMessage)
-		{
-			securityMessageMaker.AppendFormat(CultureInfo.CurrentCulture, "{0}: ", counter.ToString(CultureInfo.CurrentCulture));
-			securityMessageMaker.AppendLine(securityErrorMessage);
-			securityMessageMaker.Append(Environment.NewLine);
-		}
-
-		/// <summary>
-		/// Returns a set of file info's describing the files in the SafeImports registry location.
-		/// </summary>
-		/// <returns>A set of FileInfo objects describing the files in the SafeImports location.</returns>
-		private static IList<string> GetSafeImportList()
-		{
-			List<string> importsList = new List<string>();
-
-			using(RegistryKey root = VSRegistry.RegistryRoot(__VsLocalRegistryType.RegType_Configuration))
-			{
-				if(root != null)
-				{
-					using(RegistryKey key = root.OpenSubKey(SafeImportsSubkey))
-					{
-						if(key != null)
-						{
-							foreach(string value in key.GetValueNames())
-							{
-								string keyValue = key.GetValue(value, String.Empty, RegistryValueOptions.None) as string;
-								// Make sure that the environment variables are expanded.
-								keyValue = System.Environment.ExpandEnvironmentVariables(keyValue);
-								Uri uri;
-								if(!String.IsNullOrEmpty(keyValue) && Uri.TryCreate(keyValue, UriKind.Absolute, out uri) && uri.IsAbsoluteUri)
-								{
-									importsList.Add(keyValue);
-								}
-							}
-						}
-					}
-				}
-			}
-
-			return importsList;
-		}
-
-		/// <summary>
-		/// Checks if an import is a safe import.
-		/// </summary>
-		/// <param name="safeImportsList">A list of safe imports from teh registry.</param>
-		/// <param name="fileToCheck">The file to check.</param>
-		/// <returns>true if the file to check can be found in the safe import list</returns>
-		private static bool IsSafeImport(IList<string> safeImportsList, string fileToCheck)
-		{
-			foreach(string safeImport in safeImportsList)
-			{
-				if(NativeMethods.IsSamePath(safeImport, fileToCheck))
-				{
-					return true;
-				}
-			}
-
-			return false;
-		}
-		#endregion
-
-		#region nested types
-		/// <summary>
-		/// Class for checking that the items defined in LoadTimeCheckItemLocation are being defined in safe locations.
-		/// </summary>
-		private class ItemSecurityChecker
-		{
-			#region fields
-			/// <summary>
-			/// The associated service provider.
-			/// </summary>
-			private IServiceProvider serviceProvider;
-
-			/// <summary>
-			/// The solutionFolder;
-			/// </summary>
-			private Uri solutionFolder;
-
-			/// <summary>
-			/// The project folder
-			/// </summary>
-			private Uri projectFolder;
-
-			/// <summary>
-			/// The set of special folders.
-			/// </summary>
-			private IList<Uri> specialFolders;
-			#endregion
-
-			#region ctors
-			/// <summary>
-			/// Overloaded Constructor 
-			/// </summary>
-			/// <param name="projectFilePath">path to the project file</param>
-			/// <param name="serviceProvider">A service provider.</param>
-			internal ItemSecurityChecker(IServiceProvider serviceProvider, string projectFullPath)
-			{
-				this.serviceProvider = serviceProvider;
-
-				// Initialize the project and solution folders.
-				this.SetProjectFolder(projectFullPath);
-				this.SetSolutionFolder();
-
-				// Set the special folders. Maybe this should be a static.
-				this.specialFolders = ItemSecurityChecker.SetSpecialFolders();
-			}
-			#endregion
-
-			#region methods
-			/// <summary>
-			/// Checks whether a set of project items described by the LoadTimeCheckItemLocation are in a safe location.
-			/// </summary>
-			/// <param name="projectShim">The project shim containing the items to be checked.</param>
-			/// <param name="itemsToCheck">The list of items to check if they are in the project cone.</param>
-			/// <param name="reasonForFailure">The reason for failure if any of the files fails</param>
-			/// <returns>true if all project items are in the project cone. Otherwise false.</returns>
-			internal bool CheckItemsSecurity(ProjectShim projectShim, IList<string> itemsToCheck, out string reasonForFailure)
-			{
-				reasonForFailure = String.Empty;
-
-				// If nothing to check assume that everything is ok.
-				if(itemsToCheck == null)
-				{
-					return true;
-				}
-
-				Debug.Assert(projectShim != null, "Cannot check the items if no project has been defined!");
-
-				foreach(string itemName in itemsToCheck)
-				{
-					BuildItemGroupShim group = projectShim.GetEvaluatedItemsByNameIgnoringCondition(itemName);
-					if(group != null)
-					{
-						IEnumerator enumerator = group.GetEnumerator();
-						while(enumerator.MoveNext())
-						{
-							BuildItemShim item = enumerator.Current as BuildItemShim;
-
-							string finalItem = item.FinalItemSpec;
-
-							if(!String.IsNullOrEmpty(finalItem))
-							{
-								// Perform the actual check - start with normalizing the path.  Relative paths
-								// should be treated as relative to the project file.
-								string fullPath = this.GetFullPath(finalItem);
-
-								// If the fullpath of the item is suspiciously short do not check it.
-								if(fullPath.Length >= 3)
-								{
-									Uri uri = null;
-
-									// If we cannot create a uri from the item path return with the error
-									if(!Uri.TryCreate(fullPath, UriKind.Absolute, out uri))
-									{
-										reasonForFailure = fullPath;
-										return false;
-									}
-
-									// Check if the item points to a network share
-									if(uri.IsUnc)
-									{
-										reasonForFailure = fullPath;
-										return false;
-									}
-
-									// Check if the item is located in a drive root directory
-									if(uri.Segments.Length == 3 && uri.Segments[1] == ":" && uri.Segments[2][0] == Path.DirectorySeparatorChar)
-									{
-										reasonForFailure = fullPath;
-										return false;
-									}
-
-									//Check if the item is not in a special folder.
-									foreach(Uri specialFolder in this.specialFolders)
-									{
-										if(ItemSecurityChecker.IsItemInCone(uri, specialFolder))
-										{
-											reasonForFailure = fullPath;
-											return false;
-										}
-									}
-								}
-								else
-								{
-									reasonForFailure = fullPath;
-									return false;
-								}
-							}
-						}
-					}
-				}
-
-				return true;
-			}
-
-
-			/// <summary>
-			/// Gets the list of special directories. This method should be optimized if called more then once.
-			/// </summary>
-			/// <returns>The list of special directories</returns>
-			private static IList<Uri> SetSpecialFolders()
-			{
-				string[] specialFolderArray = new string[5]
-                {
-                   Environment.GetFolderPath(Environment.SpecialFolder.System),
-                   Environment.GetFolderPath(Environment.SpecialFolder.ProgramFiles),
-                   Environment.GetFolderPath(Environment.SpecialFolder.Startup),
-                   ItemSecurityChecker.GetSpecialDirectoryFromNative(NativeMethods.ExtendedSpecialFolder.Windows),
-                   ItemSecurityChecker.GetSpecialDirectoryFromNative(NativeMethods.ExtendedSpecialFolder.CommonStartup)
-                };
-
-				List<Uri> specialFolders = new List<Uri>(5);
-
-				// Add trailing backslash to the folders.
-				foreach(string specialFolder in specialFolderArray)
-				{
-					string tempFolder = specialFolder;
-					if(!tempFolder.EndsWith("\\", StringComparison.Ordinal))
-					{
-						tempFolder += "\\";
-					}
-
-					specialFolders.Add(new Uri(tempFolder));
-				}
-
-				return specialFolders;
-			}
-
-			/// <summary>
-			/// Some special folders are not supported by System.Environment.GetFolderPath. Get these special folders using p/invoke.
-			/// </summary>
-			/// <param name="specialFolder">The type of special folder to retrieve.</param>
-			/// <returns>The folder path</returns>
-			private static string GetSpecialDirectoryFromNative(NativeMethods.ExtendedSpecialFolder extendedSpecialFolder)
-			{
-				string specialFolder = null;
-				IntPtr buffer = IntPtr.Zero;
-
-				// Demand Unmanaged code permission. It should be normal to demand UnmanagedCodePermission from an assembly integrating into VS.
-				new SecurityPermission(SecurityPermissionFlag.UnmanagedCode).Demand();
-				try
-				{
-					buffer = Marshal.AllocHGlobal((NativeMethods.MAX_PATH + 1) * 2);
-					IntPtr[] pathIdentifier = new IntPtr[1];
-
-					if(ErrorHandler.Succeeded(UnsafeNativeMethods.SHGetSpecialFolderLocation(IntPtr.Zero, (int)extendedSpecialFolder, pathIdentifier)) && UnsafeNativeMethods.SHGetPathFromIDList(pathIdentifier[0], buffer))
-					{
-						specialFolder = Marshal.PtrToStringAuto(buffer);
-					}
-				}
-				finally
-				{
-					if(buffer != IntPtr.Zero)
-					{
-						Marshal.FreeHGlobal(buffer);
-					}
-				}
-
-
-				return specialFolder;
-			}
-
-
-			/// <summary>
-			/// Checks if the itemToCheck is in the cone of the baseUri.
-			/// </summary>
-			/// <param name="itemToCheck">The item to check</param>
-			/// <param name="baseUri">The base to the item. This should define a folder.</param>
-			/// <returns>true if the item to check is in the cone of the baseUri.</returns>
-			private static bool IsItemInCone(Uri itemToCheck, Uri baseUri)
-			{
-				Debug.Assert(itemToCheck != null && baseUri != null, "Cannot check for items since the input is wrong");
-				Debug.Assert(!NativeMethods.IsSamePath(Path.GetDirectoryName(baseUri.LocalPath), baseUri.LocalPath), "The " + baseUri.LocalPath + " is not a folder!");
-
-				return (itemToCheck.IsFile && baseUri.IsFile &&
-					String.Compare(itemToCheck.LocalPath, 0, baseUri.LocalPath, 0, baseUri.LocalPath.Length, StringComparison.OrdinalIgnoreCase) == 0);
-			}
-
-			/// <summary>
-			/// Sets the solution folder.
-			/// </summary>
-			private void SetSolutionFolder()
-			{
-				if(this.solutionFolder != null)
-				{
-					return;
-				}
-
-				IVsSolution solution = this.serviceProvider.GetService(typeof(SVsSolution)) as IVsSolution;
-				Debug.Assert(solution != null, "Could not retrieve the solution service from the global service provider");
-
-				string solutionDirectory, solutionFile, userOptionsFile;
-
-				// We do not want to throw. If we cannot set the solution related constants we set them to empty string.
-				ErrorHandler.ThrowOnFailure(solution.GetSolutionInfo(out solutionDirectory, out solutionFile, out userOptionsFile));
-
-				if(String.IsNullOrEmpty(solutionDirectory))
-				{
-					return;
-				}
-
-				// Make sure the solution dir ends with a backslash
-				if(solutionDirectory[solutionDirectory.Length - 1] != Path.DirectorySeparatorChar)
-				{
-					solutionDirectory += Path.DirectorySeparatorChar;
-				}
-
-				Uri.TryCreate(solutionDirectory, UriKind.Absolute, out this.solutionFolder);
-
-				Debug.Assert(this.solutionFolder != null, "Could not create the Uri for the solution folder");
-			}
-
-			/// <summary>
-			/// Sets the project folder.
-			/// </summary>
-			/// <param name="projectFullPath">The path to the project</param>
-			private void SetProjectFolder(string projectFullPath)
-			{
-				if(this.projectFolder != null)
-				{
-					return;
-				}
-
-				string tempProjectFolder = Path.GetDirectoryName(projectFullPath);
-
-				// Make sure the project dir ends with a backslash
-				if(!tempProjectFolder.EndsWith("\\", StringComparison.Ordinal) && !tempProjectFolder.EndsWith("/", StringComparison.Ordinal))
-				{
-					tempProjectFolder += "\\";
-				}
-
-				Uri.TryCreate(tempProjectFolder, UriKind.Absolute, out this.projectFolder);
-
-				Debug.Assert(this.projectFolder != null, "Could not create the Uri for the project folder");
-			}
-
-			/// <summary>
-			/// Gets the fullpath of an item. 
-			/// Relative pathes are treated as relative to the project file.
-			/// </summary>
-			/// <param name="item">The item.</param>
-			/// <returns>The ful path of the item.</returns>
-			private string GetFullPath(string item)
-			{
-				Url url;
-				if(Path.IsPathRooted(item))
-				{
-					// Use absolute path
-					url = new Microsoft.VisualStudio.Shell.Url(item);
-				}
-				else
-				{
-					// Path is relative, so make it relative to project path
-					url = new Url(new Url(this.projectFolder.LocalPath), item);
-				}
-
-				return url.AbsoluteUrl;
-			}
-			#endregion
-		}
-		#endregion
-	}
-}