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// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
namespace WixToolset.Core.Bind
{
using System;
using System.Collections.Generic;
using System.IO;
using System.Security.AccessControl;
using WixToolset.Data;
using WixToolset.Data.Bind;
using WixToolset.Extensibility;
using WixToolset.Extensibility.Services;
internal class TransferFilesCommand
{
public TransferFilesCommand(IMessaging messaging, IEnumerable<IFileSystemExtension> extensions, IEnumerable<FileTransfer> fileTransfers, bool suppressAclReset)
{
this.FileSystem = new FileSystem(extensions);
this.Messaging = messaging;
this.FileTransfers = fileTransfers;
this.SuppressAclReset = suppressAclReset;
}
private FileSystem FileSystem { get; }
private IMessaging Messaging { get; }
private IEnumerable<FileTransfer> FileTransfers { get; }
private bool SuppressAclReset { get; }
public void Execute()
{
List<string> destinationFiles = new List<string>();
foreach (var fileTransfer in this.FileTransfers)
{
// If the source and destination are identical, then there's nothing to do here
if (0 == String.Compare(fileTransfer.Source, fileTransfer.Destination, StringComparison.OrdinalIgnoreCase))
{
fileTransfer.Redundant = true;
continue;
}
bool retry = false;
do
{
try
{
if (fileTransfer.Move)
{
this.Messaging.Write(VerboseMessages.MoveFile(fileTransfer.Source, fileTransfer.Destination));
this.TransferFile(true, fileTransfer.Source, fileTransfer.Destination);
}
else
{
this.Messaging.Write(VerboseMessages.CopyFile(fileTransfer.Source, fileTransfer.Destination));
this.TransferFile(false, fileTransfer.Source, fileTransfer.Destination);
}
retry = false;
destinationFiles.Add(fileTransfer.Destination);
}
catch (FileNotFoundException e)
{
throw new WixFileNotFoundException(fileTransfer.SourceLineNumbers, e.FileName);
}
catch (DirectoryNotFoundException)
{
// if we already retried, give up
if (retry)
{
throw;
}
string directory = Path.GetDirectoryName(fileTransfer.Destination);
this.Messaging.Write(VerboseMessages.CreateDirectory(directory));
Directory.CreateDirectory(directory);
retry = true;
}
catch (UnauthorizedAccessException)
{
// if we already retried, give up
if (retry)
{
throw;
}
if (File.Exists(fileTransfer.Destination))
{
this.Messaging.Write(VerboseMessages.RemoveDestinationFile(fileTransfer.Destination));
// try to ensure the file is not read-only
FileAttributes attributes = File.GetAttributes(fileTransfer.Destination);
try
{
File.SetAttributes(fileTransfer.Destination, attributes & ~FileAttributes.ReadOnly);
}
catch (ArgumentException) // thrown for unauthorized access errors
{
throw new WixException(ErrorMessages.UnauthorizedAccess(fileTransfer.Destination));
}
// try to delete the file
try
{
File.Delete(fileTransfer.Destination);
}
catch (IOException)
{
throw new WixException(ErrorMessages.FileInUse(null, fileTransfer.Destination));
}
retry = true;
}
else // no idea what just happened, bail
{
throw;
}
}
catch (IOException)
{
// if we already retried, give up
if (retry)
{
throw;
}
if (File.Exists(fileTransfer.Destination))
{
this.Messaging.Write(VerboseMessages.RemoveDestinationFile(fileTransfer.Destination));
// ensure the file is not read-only, then delete it
FileAttributes attributes = File.GetAttributes(fileTransfer.Destination);
File.SetAttributes(fileTransfer.Destination, attributes & ~FileAttributes.ReadOnly);
try
{
File.Delete(fileTransfer.Destination);
}
catch (IOException)
{
throw new WixException(ErrorMessages.FileInUse(null, fileTransfer.Destination));
}
retry = true;
}
else // no idea what just happened, bail
{
throw;
}
}
} while (retry);
}
// Finally, if there were any files remove the ACL that may have been added to
// during the file transfer process.
if (0 < destinationFiles.Count && !this.SuppressAclReset)
{
var aclReset = new FileSecurity();
aclReset.SetAccessRuleProtection(false, false);
try
{
//WixToolset.Core.Native.NativeMethods.ResetAcls(destinationFiles.ToArray(), (uint)destinationFiles.Count);
foreach (var file in destinationFiles)
{
new FileInfo(file).SetAccessControl(aclReset);
}
}
catch
{
this.Messaging.Write(WarningMessages.UnableToResetAcls());
}
}
}
private void TransferFile(bool move, string source, string destination)
{
bool complete = false;
if (move)
{
complete = this.FileSystem.MoveFile(source, destination, true);
}
else
{
complete = this.FileSystem.CopyFile(source, destination, true);
}
if (!complete)
{
throw new InvalidOperationException(); // TODO: something needs to be said here that none of the binder file managers returned a result.
}
}
}
}
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