public override IAsyncOperation <BaseStorageFile> CreateFileAsync(string desiredName, CreationCollisionOption options)
{
return(AsyncInfo.Run <BaseStorageFile>(async(cancellationToken) =>
{
using var ftpClient = new FtpClient();
ftpClient.Host = FtpHelpers.GetFtpHost(Path);
ftpClient.Port = FtpHelpers.GetFtpPort(Path);
ftpClient.Credentials = FtpManager.Credentials.Get(ftpClient.Host, FtpManager.Anonymous);
if (!await ftpClient.EnsureConnectedAsync())
{
return null;
}
using var stream = new MemoryStream();
var result = await ftpClient.UploadAsync(stream, $"{FtpPath}/{desiredName}", options == CreationCollisionOption.ReplaceExisting ? FtpRemoteExists.Overwrite : FtpRemoteExists.Skip);
if (result == FtpStatus.Success)
{
return new FtpStorageFile(new StorageFileWithPath(null, $"{Path}/{desiredName}"));
}
if (result == FtpStatus.Skipped)
{
if (options == CreationCollisionOption.FailIfExists)
{
throw new IOException("File already exists.");
}
return null;
}
throw new IOException($"Failed to create file {FtpPath}/{desiredName}.");
}));
}
public override IAsyncOperation <BaseStorageFolder> CreateFolderAsync(string desiredName, CreationCollisionOption options)
{
return(AsyncInfo.Run <BaseStorageFolder>(async(cancellationToken) =>
{
using var ftpClient = new FtpClient();
ftpClient.Host = FtpHelpers.GetFtpHost(Path);
ftpClient.Port = FtpHelpers.GetFtpPort(Path);
ftpClient.Credentials = FtpManager.Credentials.Get(ftpClient.Host, FtpManager.Anonymous);
if (!await ftpClient.EnsureConnectedAsync())
{
throw new IOException($"Failed to connect to FTP server.");
}
if (ftpClient.DirectoryExists($"{FtpPath}/{desiredName}"))
{
return new FtpStorageFolder(new StorageFileWithPath(null, $"{Path}/{desiredName}"));
}
if (!await ftpClient.CreateDirectoryAsync($"{FtpPath}/{desiredName}",
options == CreationCollisionOption.ReplaceExisting,
cancellationToken))
{
throw new IOException($"Failed to create folder {desiredName}.");
}
return new FtpStorageFolder(new StorageFileWithPath(null, $"{Path}/{desiredName}"));
}));
}
public override IAsyncOperation <IReadOnlyList <IStorageItem> > GetItemsAsync()
{
return(AsyncInfo.Run(async(cancellationToken) =>
{
using var ftpClient = new FtpClient();
ftpClient.Host = FtpHelpers.GetFtpHost(Path);
ftpClient.Port = FtpHelpers.GetFtpPort(Path);
ftpClient.Credentials = FtpManager.Credentials.Get(ftpClient.Host, FtpManager.Anonymous);
if (!await ftpClient.EnsureConnectedAsync())
{
return null;
}
var items = new List <IStorageItem>();
var list = await ftpClient.GetListingAsync(FtpPath);
foreach (var item in list)
{
if (item.Type == FtpFileSystemObjectType.File)
{
items.Add(new FtpStorageFile(Path, item));
}
else if (item.Type == FtpFileSystemObjectType.Directory)
{
items.Add(new FtpStorageFolder(Path, item));
}
}
;
return (IReadOnlyList <IStorageItem>)items;
}));
}
public override IAsyncAction RenameAsync(string desiredName, NameCollisionOption option)
{
return(AsyncInfo.Run(async(cancellationToken) =>
{
using var ftpClient = new FtpClient();
ftpClient.Host = FtpHelpers.GetFtpHost(Path);
ftpClient.Port = FtpHelpers.GetFtpPort(Path);
ftpClient.Credentials = FtpManager.Credentials.Get(ftpClient.Host, FtpManager.Anonymous);
if (!await ftpClient.EnsureConnectedAsync())
{
return;
}
if (!await ftpClient.MoveDirectoryAsync(FtpPath,
$"{PathNormalization.GetParentDir(FtpPath)}/{desiredName}",
option == NameCollisionOption.ReplaceExisting ? FtpRemoteExists.Overwrite : FtpRemoteExists.Skip,
cancellationToken))
{
if (option == NameCollisionOption.GenerateUniqueName)
{
// TODO: handle name generation
}
}
}));
}
private async void FtpDataStreamingHandler(StreamedFileDataRequest request)
{
try
{
using var ftpClient = new FtpClient();
ftpClient.Host = FtpHelpers.GetFtpHost(Path);
ftpClient.Port = FtpHelpers.GetFtpPort(Path);
ftpClient.Credentials = FtpManager.Credentials.Get(ftpClient.Host, FtpManager.Anonymous);
if (!await ftpClient.EnsureConnectedAsync())
{
request.FailAndClose(StreamedFileFailureMode.CurrentlyUnavailable);
return;
}
using (var outStream = request.AsStreamForWrite())
{
await ftpClient.DownloadAsync(outStream, FtpPath);
await outStream.FlushAsync();
}
request.Dispose();
}
catch
{
request.FailAndClose(StreamedFileFailureMode.Incomplete);
}
}
public override IAsyncOperation <IStorageItem> GetItemAsync(string name)
{
return(AsyncInfo.Run <IStorageItem>(async(cancellationToken) =>
{
using var ftpClient = new FtpClient();
ftpClient.Host = FtpHelpers.GetFtpHost(Path);
ftpClient.Port = FtpHelpers.GetFtpPort(Path);
ftpClient.Credentials = FtpManager.Credentials.Get(ftpClient.Host, FtpManager.Anonymous);
if (!await ftpClient.EnsureConnectedAsync())
{
return null;
}
var item = await ftpClient.GetObjectInfoAsync(FtpHelpers.GetFtpPath(PathNormalization.Combine(Path, name)));
if (item != null)
{
if (item.Type == FtpFileSystemObjectType.File)
{
return new FtpStorageFile(Path, item);
}
else if (item.Type == FtpFileSystemObjectType.Directory)
{
return new FtpStorageFolder(Path, item);
}
}
return null;
}));
}
public override IAsyncOperation <BaseStorageFile> CopyAsync(IStorageFolder destinationFolder, string desiredNewName, NameCollisionOption option)
{
return(AsyncInfo.Run(async(cancellationToken) =>
{
using var ftpClient = new FtpClient();
ftpClient.Host = FtpHelpers.GetFtpHost(Path);
ftpClient.Port = FtpHelpers.GetFtpPort(Path);
ftpClient.Credentials = FtpManager.Credentials.Get(ftpClient.Host, FtpManager.Anonymous);
if (!await ftpClient.EnsureConnectedAsync())
{
return null;
}
BaseStorageFolder destFolder = destinationFolder.AsBaseStorageFolder();
BaseStorageFile file = await destFolder.CreateFileAsync(desiredNewName, option.Convert());
var stream = await file.OpenStreamForWriteAsync();
if (await ftpClient.DownloadAsync(stream, FtpPath, token: cancellationToken))
{
return file;
}
return null;
}));
}
public override IAsyncOperation <IRandomAccessStream> OpenAsync(FileAccessMode accessMode)
{
return(AsyncInfo.Run <IRandomAccessStream>(async(cancellationToken) =>
{
var ftpClient = new FtpClient();
ftpClient.Host = FtpHelpers.GetFtpHost(Path);
ftpClient.Port = FtpHelpers.GetFtpPort(Path);
ftpClient.Credentials = FtpManager.Credentials.Get(ftpClient.Host, FtpManager.Anonymous);
if (!await ftpClient.EnsureConnectedAsync())
{
return null;
}
if (accessMode == FileAccessMode.Read)
{
var inStream = await ftpClient.OpenReadAsync(FtpPath, cancellationToken);
return new NonSeekableRandomAccessStreamForRead(inStream, (ulong)inStream.Length)
{
DisposeCallback = () => ftpClient.Dispose()
};
}
else
{
return new NonSeekableRandomAccessStreamForWrite(await ftpClient.OpenWriteAsync(FtpPath, cancellationToken))
{
DisposeCallback = () => ftpClient.Dispose()
};
}
}));
}
private FtpClient GetFtpClient()
{
string host = FtpHelpers.GetFtpHost(Path);
ushort port = FtpHelpers.GetFtpPort(Path);
var credentials = FtpManager.Credentials.Get(host, FtpManager.Anonymous);
return(new(host, port, credentials));
}
public override IAsyncAction DeleteAsync()
{
return(AsyncInfo.Run(async(cancellationToken) =>
{
using var ftpClient = new FtpClient();
ftpClient.Host = FtpHelpers.GetFtpHost(Path);
ftpClient.Port = FtpHelpers.GetFtpPort(Path);
ftpClient.Credentials = FtpManager.Credentials.Get(ftpClient.Host, FtpManager.Anonymous);
if (!await ftpClient.EnsureConnectedAsync())
{
return;
}
await ftpClient.DeleteDirectoryAsync(FtpPath, cancellationToken);
}));
}
public override IAsyncOperation <IInputStream> OpenSequentialReadAsync()
{
return(AsyncInfo.Run <IInputStream>(async(cancellationToken) =>
{
var ftpClient = new FtpClient();
ftpClient.Host = FtpHelpers.GetFtpHost(Path);
ftpClient.Port = FtpHelpers.GetFtpPort(Path);
ftpClient.Credentials = FtpManager.Credentials.Get(ftpClient.Host, FtpManager.Anonymous);
if (!await ftpClient.EnsureConnectedAsync())
{
return null;
}
var inStream = await ftpClient.OpenReadAsync(FtpPath, cancellationToken);
return new InputStreamWithDisposeCallback(inStream)
{
DisposeCallback = () => ftpClient.Dispose()
};
}));
}
public override IAsyncOperation <BaseBasicProperties> GetBasicPropertiesAsync()
{
return(AsyncInfo.Run <BaseBasicProperties>(async(cancellationToken) =>
{
using var ftpClient = new FtpClient();
ftpClient.Host = FtpHelpers.GetFtpHost(Path);
ftpClient.Port = FtpHelpers.GetFtpPort(Path);
ftpClient.Credentials = FtpManager.Credentials.Get(ftpClient.Host, FtpManager.Anonymous);
if (!await ftpClient.EnsureConnectedAsync())
{
return new BaseBasicProperties();
}
var item = await ftpClient.GetObjectInfoAsync(FtpPath);
if (item != null)
{
return new FtpFolderBasicProperties(item);
}
return new BaseBasicProperties();
}));
}
public override IAsyncOperation <IRandomAccessStreamWithContentType> OpenReadAsync()
{
return(AsyncInfo.Run <IRandomAccessStreamWithContentType>(async(cancellationToken) =>
{
var ftpClient = new FtpClient();
ftpClient.Host = FtpHelpers.GetFtpHost(Path);
ftpClient.Port = FtpHelpers.GetFtpPort(Path);
ftpClient.Credentials = FtpManager.Credentials.Get(ftpClient.Host, FtpManager.Anonymous);
if (!await ftpClient.EnsureConnectedAsync())
{
return null;
}
var inStream = await ftpClient.OpenReadAsync(FtpPath, cancellationToken);
var nsStream = new NonSeekableRandomAccessStreamForRead(inStream, (ulong)inStream.Length)
{
DisposeCallback = () => ftpClient.Dispose()
};
return new StreamWithContentType(nsStream);
}));
}