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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.ExtensibilityServices
{
using System;
using System.IO;
using WixToolset.Data;
using WixToolset.Extensibility.Data;
using WixToolset.Extensibility.Services;
internal class BackendHelper : IBackendHelper
{
private static readonly string[] ReservedFileNames = { "CON", "PRN", "AUX", "NUL", "COM1", "COM2", "COM3", "COM4", "COM5", "COM6", "COM7", "COM8", "COM9", "LPT1", "LPT2", "LPT3", "LPT4", "LPT5", "LPT6", "LPT7", "LPT8", "LPT9" };
public BackendHelper(IServiceProvider serviceProvider)
{
this.Messaging = serviceProvider.GetService<IMessaging>();
}
private IMessaging Messaging { get; }
public IFileTransfer CreateFileTransfer(string source, string destination, bool move, SourceLineNumber sourceLineNumbers = null)
{
var sourceFullPath = this.GetValidatedFullPath(sourceLineNumbers, source);
var destinationFullPath = this.GetValidatedFullPath(sourceLineNumbers, destination);
return (String.IsNullOrEmpty(sourceFullPath) || String.IsNullOrEmpty(destinationFullPath)) ? null : new FileTransfer
{
Source = sourceFullPath,
Destination = destinationFullPath,
Move = move,
SourceLineNumbers = sourceLineNumbers,
Redundant = String.Equals(sourceFullPath, destinationFullPath, StringComparison.OrdinalIgnoreCase)
};
}
public string CreateGuid(Guid namespaceGuid, string value)
{
return Uuid.NewUuid(namespaceGuid, value).ToString("B").ToUpperInvariant();
}
public IResolvedDirectory CreateResolvedDirectory(string directoryParent, string name)
{
return new ResolvedDirectory
{
DirectoryParent = directoryParent,
Name = name
};
}
public ITrackedFile TrackFile(string path, TrackedFileType type, SourceLineNumber sourceLineNumbers = null)
{
return new TrackedFile(path, type, sourceLineNumbers);
}
private string GetValidatedFullPath(SourceLineNumber sourceLineNumbers, string path)
{
try
{
var result = Path.GetFullPath(path);
var filename = Path.GetFileName(result);
foreach (var reservedName in ReservedFileNames)
{
if (reservedName.Equals(filename, StringComparison.OrdinalIgnoreCase))
{
this.Messaging.Write(ErrorMessages.InvalidFileName(sourceLineNumbers, path));
return null;
}
}
return result;
}
catch (ArgumentException)
{
this.Messaging.Write(ErrorMessages.InvalidFileName(sourceLineNumbers, path));
}
catch (PathTooLongException)
{
this.Messaging.Write(ErrorMessages.PathTooLong(sourceLineNumbers, path));
}
return null;
}
}
}
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