private async Task ExecuteInternal()
{
var targetPath = this.target.Value;
var sourcePath = this.source.Value;
if (File.Exists(targetPath))
{
if (File.GetLastWriteTimeUtc(sourcePath) == File.GetLastWriteTimeUtc(targetPath))
{
return;
}
}
else
{
Directory.CreateDirectory(Path.GetDirectoryName(targetPath) ?? "");
}
using (var sourceStream = new FileStream(sourcePath, FileMode.Open, FileAccess.Read, FileShare.Read, Consts.BufferSize, FileOptions.Asynchronous))
using (var targetStream = new FileStream(targetPath, FileMode.OpenOrCreate, FileAccess.Write, FileShare.ReadWrite, Consts.BufferSize, FileOptions.Asynchronous))
using (var decryptor = new CipherStreamDecryptor(sourceStream))
{
await decryptor.Init(
this.personalCard.GetRecepientId(),
this.personalCard.PrivateKey,
this.password);
while (decryptor.HasMore())
{
await targetStream.WriteAsync(await decryptor.GetChunk());
}
}
File.SetLastWriteTimeUtc(targetPath, File.GetLastWriteTimeUtc(sourcePath));
}
public override async Task Execute()
{
if (File.Exists(this.target))
{
if (File.GetLastWriteTimeUtc(this.source) == File.GetLastWriteTimeUtc(this.target))
{
return;
}
}
else
{
Directory.CreateDirectory(Path.GetDirectoryName(this.target) ?? "");
}
using (var sourceStream = new FileStream(this.source, FileMode.Open, FileAccess.Read, FileShare.Read, Consts.BufferSize, FileOptions.Asynchronous))
using (var targetStream = new FileStream(this.target, FileMode.OpenOrCreate, FileAccess.Write, FileShare.ReadWrite, Consts.BufferSize, FileOptions.Asynchronous))
using (var decryptor = new CipherStreamDecryptor(sourceStream))
{
await decryptor.Init(this.credentials.RecepientId, this.credentials.PrivateKey);
while (decryptor.HasMore())
{
await targetStream.WriteAsync(await decryptor.GetChunk());
}
}
File.SetLastWriteTimeUtc(this.target, File.GetLastWriteTimeUtc(this.source));
}
public async Task DownloadFile(ServerPath serverFileName, LocalFolderRoot root,
CancellationToken token, IProgress <double> progress = null)
{
token.ThrowIfCancellationRequested();
using (var download = await this.client.Files.DownloadAsync(serverFileName.Value))
{
var size = download.Response.Size;
using (var stream = await download.GetContentAsStreamAsync())
using (var cipherStreamDecryptor = new CipherStreamDecryptor(stream))
{
await cipherStreamDecryptor.Init(this.credentials.GetRecepientId(),
this.credentials.PrivateKey.Data, this.privateKeyPassword);
var originalFileName = cipherStreamDecryptor.GetEncryptedValue(OriginalFileNameKey);
var fromServerPath = new UniversalPath(originalFileName);
var localPath = LocalPath.CreateFromUniversal(fromServerPath, root);
var tempLocalName = localPath.Value + VirgilTempExtension;
var serverWriteTimeUtc = download.Response.ClientModified;
var localWriteTimeUtc = new FileInfo(localPath.Value).LastWriteTimeUtc;
if (serverWriteTimeUtc.AlmostEquals(localWriteTimeUtc))
{
progress?.Report(100);
return;
}
using (OperationExecutionContext.Instance.IgnoreChangesTo(localPath))
{
var localDir = Path.GetDirectoryName(localPath.Value);
if (localDir != null && !Directory.Exists(localDir))
{
Directory.CreateDirectory(localDir);
}
try
{
using (var dest = new FileStream(
tempLocalName, FileMode.Create, FileAccess.ReadWrite,
FileShare.ReadWrite, BufferSize,
FileOptions.Asynchronous | FileOptions.SequentialScan))
{
while (cipherStreamDecryptor.HasMore())
{
var chunk = await cipherStreamDecryptor.GetChunk();
await dest.WriteAsync(chunk, 0, chunk.Length, token);
progress?.Report(100.0 * chunk.Length / size);
}
await dest.FlushAsync(token);
}
//File.Delete(localPath.Value);
File.Copy(tempLocalName, localPath.Value, true);
File.SetLastWriteTimeUtc(localPath.Value, serverWriteTimeUtc);
}
finally
{
try
{
File.Delete(tempLocalName);
}
catch (Exception exception)
{
Console.WriteLine(exception);
}
}
}
}
}
}
