// Wrap calls to TarFileStream.MoveNext() to cache file names for HasFile().
private bool MoveNext(TarFileStream stream)
{
var haveFile = stream.MoveNext();
if (haveFile)
{
_DirectoryCache[stream.Current] = null;
}
return(haveFile);
}
// Open a file within the tar.
protected TarFileStream OpenRead(string fileName)
{
var stream = new TarFileStream(PackageSourceFile);
if (!stream.FindNextFile(fileName))
{
stream.Close();
throw new FileNotFoundException(fileName);
}
return(stream);
}
public override void VerifyManifest()
{
// Verify the presence of a manifest.
var manifest = Manifest;
int verifiedCount = 0;
using (var stream = new TarFileStream(PackageSourceFile))
{
// For a tar package, it is more efficient to iterate the files in the order within the archive.
while (MoveNext(stream))
{
// Find the manifest entry for the current tar entry.
FileDigest fileDigest = manifest.Find(
delegate(FileDigest aFileDigest)
{
return(String.Compare(aFileDigest.Name, stream.Current, true) == 0);
});
if (fileDigest == null)
{
continue;
}
// The manifest entry was found.
// Verify its digest.
fileDigest.Verify(new MemoryStream(stream.ReadAllBytes()));
verifiedCount++;
}
foreach (var fileDigest in manifest)
{
if (!fileDigest.WasVerified)
{
// A manifest entry was missing.
XenOvf.Utilities.Log.Error(string.Format(Messages.FILE_MISSING, fileDigest.Name));
}
}
if (verifiedCount != manifest.Count)
{
// A manifest entry was missing.
throw new Exception(Messages.SECURITY_FILE_MISSING);
}
}
}
private void Load()
{
using (var stream = new TarFileStream(PackageSourceFile))
{
while (MoveNext(stream))
{
var extension = Path.GetExtension(stream.Current);
if ((_DescriptorFileName == null) && (String.Compare(extension, Properties.Settings.Default.ovfFileExtension, true) == 0))
{
// Use the first file name with an ovf extension.
_DescriptorFileName = stream.Current;
}
else if (String.Compare(extension, Properties.Settings.Default.manifestFileExtension, true) == 0)
{
// Skip a manifest file that does not have the base name as the descriptor.
if ((_DescriptorFileName != null) && (String.Compare(stream.Current, ManifestFileName, true) != 0))
{
continue;
}
}
else if (String.Compare(extension, Properties.Settings.Default.certificateFileExtension, true) == 0)
{
// Skip a certificate file that does not have the base name as the descriptor.
if ((_DescriptorFileName != null) && (String.Compare(stream.Current, CertificateFileName, true) != 0))
{
continue;
}
}
else
{
// Stop loading because descriptor, manifest, and certificate files must precede all other files.
break;
}
// Load this file.
_DirectoryCache[stream.Current] = stream.ReadAllBytes();
}
}
}
// Wrap calls to TarFileStream.MoveNext() to cache file names for HasFile().
private bool MoveNext(TarFileStream stream)
{
var haveFile = stream.MoveNext();
if (haveFile)
_DirectoryCache[stream.Current] = null;
return haveFile;
}
private void Load()
{
using (var stream = new TarFileStream(PackageSourceFile))
{
while (MoveNext(stream))
{
var extension = Path.GetExtension(stream.Current);
if ((_DescriptorFileName == null) && (String.Compare(extension, Properties.Settings.Default.ovfFileExtension, true) == 0))
{
// Use the first file name with an ovf extension.
_DescriptorFileName = stream.Current;
}
else if (String.Compare(extension, Properties.Settings.Default.manifestFileExtension, true) == 0)
{
// Skip a manifest file that does not have the base name as the descriptor.
if ((_DescriptorFileName != null) && (String.Compare(stream.Current, ManifestFileName, true) != 0))
continue;
}
else if (String.Compare(extension, Properties.Settings.Default.certificateFileExtension, true) == 0)
{
// Skip a certificate file that does not have the base name as the descriptor.
if ((_DescriptorFileName != null) && (String.Compare(stream.Current, CertificateFileName, true) != 0))
continue;
}
else
{
// Stop loading because descriptor, manifest, and certificate files must precede all other files.
break;
}
// Load this file.
_DirectoryCache[stream.Current] = stream.ReadAllBytes();
}
}
}
// Open a file within the tar.
protected TarFileStream OpenRead(string fileName)
{
var stream = new TarFileStream(PackageSourceFile);
if (!stream.FindNextFile(fileName))
{
stream.Close();
throw new FileNotFoundException(fileName);
}
return stream;
}
public override void VerifyManifest()
{
// Verify the presence of a manifest.
var manifest = Manifest;
int verifiedCount = 0;
using (var stream = new TarFileStream(PackageSourceFile))
{
// For a tar package, it is more efficient to iterate the files in the order within the archive.
while (MoveNext(stream))
{
// Find the manifest entry for the current tar entry.
FileDigest fileDigest = manifest.Find(
delegate(FileDigest aFileDigest)
{
return (String.Compare(aFileDigest.Name, stream.Current, true) == 0);
});
if (fileDigest == null)
continue;
// The manifest entry was found.
// Verify its digest.
fileDigest.Verify(new MemoryStream(stream.ReadAllBytes()));
verifiedCount++;
}
foreach (var fileDigest in manifest)
{
if (!fileDigest.WasVerified)
{
// A manifest entry was missing.
XenOvf.Utilities.Log.Error(string.Format(Messages.FILE_MISSING, fileDigest.Name));
}
}
if (verifiedCount != manifest.Count)
{
// A manifest entry was missing.
throw new Exception(Messages.SECURITY_FILE_MISSING);
}
}
}
