private void Manifest(EnvelopeType ovfEnv, string pathToOvf, string ovfFileName)
{
var manifestFiles = new List <string> {
ovfFileName
};
var files = ovfEnv?.References?.File;
if (files != null)
{
manifestFiles.AddRange(files.Select(f => f.href).ToList());
}
var fileDigests = new List <FileDigest>();
foreach (var mf in manifestFiles)
{
CheckForCancellation();
var mfPath = Path.Combine(pathToOvf, mf);
if (!File.Exists(mfPath))
{
continue;
}
Description = string.Format(Messages.CREATING_MANIFEST_CHECKSUM, mf);
log.Info($"Calculating checksum for file {mf}");
using (FileStream stream = new FileStream(mfPath, FileMode.Open, FileAccess.Read))
{
var hash = StreamUtilities.ComputeHash(stream, out var hashAlgorithm);
fileDigests.Add(new FileDigest(Path.GetFileName(mf), hash, hashAlgorithm));
}
}
CheckForCancellation();
Description = Messages.CREATING_MANIFEST;
string manifest = Path.Combine(pathToOvf, $"{Path.GetFileNameWithoutExtension(ovfFileName)}{Package.MANIFEST_EXT}");
using (var stream = new FileStream(manifest, FileMode.Create, FileAccess.Write))
using (var sw = new StreamWriter(stream))
{
foreach (var fileDigest in fileDigests)
{
sw.WriteLine(fileDigest.ToManifestLine());
}
sw.Flush();
}
log.Info($"Created manifest for package {ovfFileName}");
}
internal static TaskSequence ComputeMD5(this Stream stream, Action <string> setResult)
{
int readCount;
MD5 md5 = MD5.Create();
do
{
byte[] buffer = new byte[BufferSize];
var readTask = stream.ReadAsync(buffer, 0, buffer.Length);
yield return(readTask);
readCount = readTask.Result;
StreamUtilities.ComputeHash(buffer, 0, readCount, md5);
}while (readCount != 0);
setResult(StreamUtilities.GetHashValue(md5));
}