public async Task <FileMetadata> GetFileMetadata(string serverPath, CancellationToken cancellationToken = default(CancellationToken))
{
serverPath = GetValidatedServerPath(serverPath);
bool exists = await this.ftpClient.FileExistsAsync(serverPath, cancellationToken);
if (!exists)
{
return(null);
}
var fileSize = await this.ftpClient.GetFileSizeAsync(serverPath, cancellationToken);
var lastModifiedTime = await this.ftpClient.GetModifiedTimeAsync(serverPath, FtpDate.UTC, cancellationToken);
var ret = new FileMetadata()
{
Uri = new Uri(serverPath),
Size = new DataSize(fileSize),
LastChangeTimeUtc = lastModifiedTime
};
if (this.ftpClient.HasFeature(FtpCapability.HASH))
{
var ftpHash = await this.ftpClient.GetHashAsync(serverPath, cancellationToken);
if (ftpHash.IsValid && !string.IsNullOrWhiteSpace(ftpHash.Value))
{
ret.SetHashString(ftpHash.Value.Trim());
}
}
else if (this.ftpClient.HasFeature(FtpCapability.XMD5))
{
var md5 = await this.ftpClient.GetMD5Async(serverPath, cancellationToken);
if (!string.IsNullOrWhiteSpace(md5))
{
ret.SetHashString(md5.Trim());
}
}
return(ret);
}