public static void TestCheckActiveFilesIsLocked()
{
DateTime utcNow = OS.Current.UtcNow;
DateTime utcYesterday = utcNow.AddDays(-1);
FakeRuntimeFileInfo.AddFile(_encryptedFile1, utcNow, utcNow, utcNow, Stream.Null);
FakeRuntimeFileInfo.AddFile(_decryptedFile1, utcYesterday, utcYesterday, utcYesterday, Stream.Null);
ActiveFile activeFile = new ActiveFile(OS.Current.FileInfo(_encryptedFile1), OS.Current.FileInfo(_decryptedFile1), new AesKey(), ActiveFileStatus.NotDecrypted, null);
SetupAssembly.FakeRuntimeEnvironment.TimeFunction = (() => { return(utcNow.AddMinutes(10)); });
bool changedWasRaised = false;
_fileSystemState.Add(activeFile);
_fileSystemState.Changed += ((object sender, ActiveFileChangedEventArgs e) =>
{
changedWasRaised = true;
});
using (FileLock fileLock = FileLock.Lock(activeFile.EncryptedFileInfo))
{
_fileSystemState.CheckActiveFiles(ChangedEventMode.RaiseOnlyOnModified, new ProgressContext());
}
Assert.That(changedWasRaised, Is.False, "The file should be not be detected as decrypted being created because the encrypted file is locked.");
using (FileLock fileLock = FileLock.Lock(activeFile.DecryptedFileInfo))
{
_fileSystemState.CheckActiveFiles(ChangedEventMode.RaiseOnlyOnModified, new ProgressContext());
}
Assert.That(changedWasRaised, Is.False, "The file should be not be detected as decrypted being created because the decrypted file is locked.");
}
private static ActiveFile TryDecrypt(IRuntimeFileInfo sourceFileInfo, IRuntimeFileInfo destinationFolderInfo, IEnumerable <AesKey> keys, ProgressContext progress)
{
ActiveFile destinationActiveFile = null;
foreach (AesKey key in keys)
{
if (OS.Log.IsInfoEnabled)
{
OS.Log.LogInfo("Decrypting '{0}'".InvariantFormat(sourceFileInfo.FullName));
}
using (FileLock sourceLock = FileLock.Lock(sourceFileInfo))
{
using (AxCryptDocument document = AxCryptFile.Document(sourceFileInfo, key, new ProgressContext()))
{
if (!document.PassphraseIsValid)
{
continue;
}
destinationActiveFile = DecryptActiveFileDocument(sourceFileInfo, destinationFolderInfo, document, progress);
break;
}
}
}
return(destinationActiveFile);
}
private void HandleFailedSend(FileLock markLock, string bufferName, ref LineReader streamReader,
FileLock readerLock, List <string> memoryBuffer, int failLimit, Action <List <string> > alternativeWrite)
{
try
{
markLock.Lock();
var buffers = ReadMark(markLock).Buffers;
var buffer = GetBufferIndex(bufferName, buffers, out var index);
if (buffer.FailedSendCount >= failLimit)
{
alternativeWrite(memoryBuffer);
HandleSuccessSend(markLock, bufferName, ref streamReader, readerLock, memoryBuffer);
}
else
{
var modifiedBuffer = new BufferInfo(buffer.Name, buffer.Written, buffer.Read, buffer.WriteActive,
buffer.LastFlushTime, buffer.FailedSendCount + 1, DateTime.Now);
buffers[index] = modifiedBuffer;
WriteMark(markLock, buffers);
streamReader.Close();
streamReader = null;
}
}
finally
{
markLock.Unlock();
}
}
public static void TestPurgeActiveFilesWhenFileIsLocked()
{
DateTime utcNow = OS.Current.UtcNow;
FakeRuntimeFileInfo.AddFile(_encryptedFile1, utcNow, utcNow, utcNow, Stream.Null);
FakeRuntimeFileInfo.AddFile(_decryptedFile1, utcNow, utcNow, utcNow, Stream.Null);
IRuntimeFileInfo encryptedFileInfo = OS.Current.FileInfo(_encryptedFile1);
IRuntimeFileInfo decryptedFileInfo = OS.Current.FileInfo(_decryptedFile1);
ActiveFile activeFile = new ActiveFile(encryptedFileInfo, decryptedFileInfo, new AesKey(), ActiveFileStatus.AssumedOpenAndDecrypted, null);
_fileSystemState.Add(activeFile);
bool changedWasRaised = false;
_fileSystemState.Changed += ((object sender, ActiveFileChangedEventArgs e) =>
{
changedWasRaised = true;
});
using (FileLock fileLock = FileLock.Lock(decryptedFileInfo))
{
_fileSystemState.PurgeActiveFiles(new ProgressContext());
}
Assert.That(changedWasRaised, Is.False, "A changed event should not be raised because the decrypted file is locked.");
}
private LineReader OpenReadBufferStream(BufferInfo bufferInfo, out FileLock streamLock)
{
streamLock = null;
if (bufferInfo.Read >= bufferInfo.Written)
{
return(null);
}
var bufferPath = GetBufferFilePath(bufferInfo);
if (_buffer.StreamService.IsStreamExist(bufferPath) == false)
{
return(null);
}
streamLock = new FileLock(bufferPath);
if (streamLock.Lock(TimeSpan.FromMilliseconds(OpenReadStreamTimeout)) == false)
{
streamLock = null;
return(null);
}
try
{
var streamReader = _buffer.StreamService.OpenReadStream(streamLock.Path, FileMode.Open, FileShare.Write);
var lineReader = new LineReader(streamReader);
for (var i = 0; i < bufferInfo.Read; i++)
{
if (lineReader.ReadLine(out var line) == false)
{
if (line != null)
{
}
else
{
break;
}
}
}
return(lineReader);
}
catch (IOException e)
{
_logger.LogError(e, "OpenReadBufferStream.");
}
finally
{
streamLock.Unlock();
}
streamLock = null;
return(null);
}
public void ReleaseIfHeld_Relases_Lock_Successfully()
{
const string fileId = "testfile2";
var fileLock1 = new FileLock(fileId);
(fileLock1.Lock(CancellationToken.None)).ShouldBeTrue();
var fileLock2 = new FileLock(fileId);
(fileLock2.Lock(CancellationToken.None)).ShouldBeFalse();
(fileLock1.Lock(CancellationToken.None)).ShouldBeTrue();
fileLock1.ReleaseIfHeld();
(fileLock2.Lock(CancellationToken.None)).ShouldBeTrue();
}
public static void TestFileLockInvalidArguments()
{
IRuntimeFileInfo nullInfo = null;
Assert.Throws <ArgumentNullException>(() => { FileLock.Lock(nullInfo); });
Assert.Throws <ArgumentNullException>(() => { FileLock.IsLocked(nullInfo); });
Assert.Throws <ArgumentNullException>(() => { FileLock.IsLocked(OS.Current.FileInfo(_fileExtPath), nullInfo); });
}
public static void TestFileLockDoubleDispose()
{
Assert.DoesNotThrow(() =>
{
using (FileLock aLock = FileLock.Lock(OS.Current.FileInfo(_fileExtPath)))
{
aLock.Dispose();
}
});
}
public static void TestFileLockMethods()
{
IRuntimeFileInfo fileInfo = OS.Current.FileInfo(_fileExtPath);
Assert.That(FileLock.IsLocked(fileInfo), Is.False, "There should be no lock for this file yet.");
using (FileLock lock1 = FileLock.Lock(fileInfo))
{
Assert.That(FileLock.IsLocked(fileInfo), Is.True, "There should be now be a lock for this file.");
}
Assert.That(FileLock.IsLocked(fileInfo), Is.False, "There should be no lock for this file again.");
}
public static void TestFileLockCaseSensitivity()
{
IRuntimeFileInfo fileInfo1 = OS.Current.FileInfo(_fileExtPath);
IRuntimeFileInfo fileInfo2 = OS.Current.FileInfo(_fileExtPath.ToUpper(CultureInfo.InvariantCulture));
Assert.That(FileLock.IsLocked(fileInfo1), Is.False, "There should be no lock for this file yet.");
Assert.That(FileLock.IsLocked(fileInfo2), Is.False, "There should be no lock for this file yet.");
using (FileLock lock1 = FileLock.Lock(fileInfo1))
{
Assert.That(FileLock.IsLocked(fileInfo1), Is.True, "There should be now be a lock for this file.");
Assert.That(FileLock.IsLocked(fileInfo2), Is.False, "There should be no lock for this file still.");
}
Assert.That(FileLock.IsLocked(fileInfo1), Is.False, "There should be no lock for this file again.");
}
[System.Security.SecurityCritical] // auto-generated
#endif
public void Remove()
{
#if !FEATURE_LEGACYNETCF
bool removedAll = true;
FileLock groupLock = FileLock.GetFileLock(Path.Combine(IsolatedStorageFile.IsolatedStorageRoot, IsolatedStorageFile.s_LockPathPrefix), IsolatedStorageFile.s_GroupPathPrefix + "-" + m_ObfuscatedId);
try {
groupLock.Lock();
foreach (string storeDir in Directory.UnsafeGetDirectories(Path.Combine(IsolatedStorageFile.IsolatedStorageRoot, IsolatedStorageFile.s_StorePathPrefix), "*", SearchOption.TopDirectoryOnly))
{
string groupFile = Path.Combine(storeDir, IsolatedStorageFile.s_GroupFileName);
if (m_ObfuscatedId.Equals(File.UnsafeReadAllText(groupFile)))
{
IsolatedStorageFile f = IsolatedStorageFile.GetUserStoreFromGroupAndStorePath(Group, storeDir);
removedAll = removedAll & f.TryRemove();
}
}
IsolatedStorageFile.TouchFile(Path.Combine(m_GroupPath, IsolatedStorageFile.s_CleanupFileName));
if (removedAll)
{
IsolatedStorageAccountingInfo.RemoveAccountingInfo(m_GroupPath);
File.UnsafeDelete(Path.Combine(m_GroupPath, IsolatedStorageFile.s_IdFileName));
File.UnsafeDelete(Path.Combine(m_GroupPath, IsolatedStorageFile.s_CleanupFileName));
Directory.UnsafeDelete(m_GroupPath, false);
}
} catch (IOException) {
// There isn't anything we can really do about this. Ignoring these sorts of issues shouldn't lead to corruption.
} catch (UnauthorizedAccessException) {
// There isn't anything we can really do about this. Ignoring these sorts of issues shouldn't lead to corruption.
} finally {
groupLock.Unlock();
}
#else // !FEATURE_LEGACYNETCF
try {
using (IsolatedStorageFile isf = IsolatedStorageFile.GetUserStoreForApplication()) {
isf.Remove();
}
} catch (IOException) {
// There isn't anything we can really do about this. Ignoring these sorts of issues shouldn't lead to corruption.
} catch (UnauthorizedAccessException) {
// There isn't anything we can really do about this. Ignoring these sorts of issues shouldn't lead to corruption.
}
#endif // !FEATURE_LEGACYNETCF
}
public static void TestFileLockWhenLocked()
{
IRuntimeFileInfo fileInfo = OS.Current.FileInfo(_fileExtPath);
Assert.That(FileLock.IsLocked(fileInfo), Is.False, "There should be no lock for this file to start with.");
using (FileLock lock1 = FileLock.Lock(fileInfo))
{
Assert.That(FileLock.IsLocked(fileInfo), Is.True, "There should be a lock for this file.");
using (FileLock lock1a = FileLock.Lock(fileInfo))
{
Assert.That(lock1a, Is.Null, "When trying to get a lock for a locked file, this should return null.");
Assert.That(FileLock.IsLocked(fileInfo), Is.True, "There should still be a lock for this file.");
}
Assert.That(FileLock.IsLocked(fileInfo), Is.True, "There should still be a lock for this file.");
}
Assert.That(FileLock.IsLocked(fileInfo), Is.False, "There should be no lock for this file now.");
}
public void ReleaseIfHeld_Does_Nothing_If_Lock_Was_Not_Held()
{
const string fileId = "testfile3";
var fileLock1 = new FileLock(fileId);
(fileLock1.Lock(CancellationToken.None)).ShouldBeTrue();
var fileLock2 = new FileLock(fileId);
(fileLock2.Lock(CancellationToken.None)).ShouldBeFalse();
fileLock2.ReleaseIfHeld();
var fileLock3 = new FileLock(fileId);
fileLock3.ReleaseIfHeld();
(fileLock3.Lock(CancellationToken.None)).ShouldBeFalse();
}
private void CleanStalledBuffers(FileLock markLock)
{
try
{
markLock.Lock();
var oldBuffers = ReadMark(markLock).Buffers;
var newBuffers = new List <BufferInfo>();
foreach (var bufferInfo in oldBuffers)
{
// TODO Investigate case when read is greater than written
if (bufferInfo.WriteActive == false && bufferInfo.Read >= bufferInfo.Written)
{
var bufferFilePath = GetBufferFilePath(bufferInfo);
if (_buffer.StreamService.IsStreamExist(bufferFilePath))
{
try
{
DeleteBuffer(bufferFilePath);
}
catch (IOException)
{
newBuffers.Add(bufferInfo);
}
}
}
else
{
newBuffers.Add(bufferInfo);
}
}
if (newBuffers.Count != oldBuffers.Count)
{
WriteMark(markLock, newBuffers);
}
}
finally
{
markLock.Unlock();
}
}
private static ActiveFile DecryptActiveFileDocument(IRuntimeFileInfo sourceFileInfo, IRuntimeFileInfo destinationFolderInfo, AxCryptDocument document, ProgressContext progress)
{
string destinationName = document.DocumentHeaders.FileName;
string destinationPath = Path.Combine(destinationFolderInfo.FullName, destinationName);
IRuntimeFileInfo destinationFileInfo = OS.Current.FileInfo(destinationPath);
using (FileLock fileLock = FileLock.Lock(destinationFileInfo))
{
AxCryptFile.Decrypt(document, destinationFileInfo, AxCryptOptions.SetFileTimes, progress);
}
ActiveFile destinationActiveFile = new ActiveFile(sourceFileInfo, destinationFileInfo, document.DocumentHeaders.KeyEncryptingKey, ActiveFileStatus.AssumedOpenAndDecrypted | ActiveFileStatus.IgnoreChange, null);
if (OS.Log.IsInfoEnabled)
{
OS.Log.LogInfo("File decrypted from '{0}' to '{1}'".InvariantFormat(sourceFileInfo.FullName, destinationActiveFile.DecryptedFileInfo.FullName));
}
return(destinationActiveFile);
}
private StreamWriter OpenWriteBufferStream(out string bufferName, out FileLock streamLock)
{
bufferName = null;
while (true)
{
try
{
_markLock.Lock();
var buffers = ReadMark(_markLock).Buffers;
if (buffers.Count == 0)
{
buffers.Add(new BufferInfo(GetNextBufferName(), 0, 0, true, DateTime.MinValue, 0, DateTime.MinValue));
}
var bufferInfo = buffers[buffers.Count - 1];
if (bufferInfo.WriteActive == false || bufferInfo.Written >= _fileBufferLimit)
{
bufferInfo = new BufferInfo(GetNextBufferName(), 0, 0, true, DateTime.MinValue, 0, DateTime.MinValue);
buffers.Add(bufferInfo);
}
bufferName = bufferInfo.Name;
streamLock = new FileLock(GetBufferFilePath(bufferInfo));
var streamWriter =
_buffer.StreamService.OpenWriteStream(streamLock.Path, FileMode.Append, FileAccess.Write, FileShare.Read);
streamWriter.AutoFlush = false;
WriteMark(_markLock, buffers);
return(streamWriter);
}
catch (IOException e)
{
_logger.LogWarning(e, $"OpenWriteBufferStream failed to open buffer '{bufferName}'.");
}
}
private bool IsReadBufferEmpty(FileLock markLock)
{
try
{
markLock.Lock();
var mark = ReadMark(markLock);
return(mark.Read >= mark.Written);
}
catch (IOException e)
{
_logger.LogError(e, "IsReadBufferEmpty");
return(true);
}
finally
{
markLock.Unlock();
}
}
private BufferInfo ModifyBuffer(FileLock markLock, string bufferName, Func <BufferInfo, BufferInfo> mutator)
{
try
{
markLock.Lock();
var buffers = ReadMark(markLock).Buffers;
var buffer = GetBufferIndex(bufferName, buffers, out var index);
var modifiedBuffer = mutator(buffer);
buffers[index] = modifiedBuffer;
WriteMark(markLock, buffers);
return(modifiedBuffer);
}
finally
{
markLock.Unlock();
}
}
public static async Task <bool> Invoke(ContextAdapter context)
{
context.Configuration.Validate();
var request = context.Request;
var response = context.Response;
var methodHandler = GetProtocolMethodHandler(context);
if (methodHandler == null)
{
return(false);
}
if (!(methodHandler is OptionsHandler))
{
var tusResumable = request.Headers.ContainsKey(HeaderConstants.TusResumable)
? request.Headers[HeaderConstants.TusResumable].FirstOrDefault()
: null;
if (tusResumable == null)
{
return(false);
}
if (tusResumable != HeaderConstants.TusResumableValue)
{
response.SetHeader(HeaderConstants.TusResumable, HeaderConstants.TusResumableValue);
response.SetHeader(HeaderConstants.TusVersion, HeaderConstants.TusResumableValue);
return(await response.Error(HttpStatusCode.PreconditionFailed,
$"Tus version {tusResumable} is not supported. Supported versions: {HeaderConstants.TusResumableValue}"));
}
}
FileLock fileLock = null;
if (methodHandler.RequiresLock)
{
fileLock = new FileLock(context.GetFileId());
var hasLock = fileLock.Lock(context.CancellationToken);
if (!hasLock)
{
return(await response.Error(HttpStatusCode.Conflict,
$"File {context.GetFileId()} is currently being updated. Please try again later"));
}
}
try
{
if (!await methodHandler.Validate(context))
{
return(true);
}
return(await methodHandler.Handle(context));
}
catch (TusStoreException storeException)
{
await context.Response.Error(HttpStatusCode.BadRequest, storeException.Message);
return(true);
}
finally
{
fileLock?.ReleaseIfHeld();
}
}
private LineReader OpenReadBufferStream(FileLock markLock, out string bufferName, out FileLock streamLock)
{
try
{
markLock.Lock();
bufferName = null;
var buffers = ReadMark(markLock).Buffers;
foreach (var buffer in buffers)
{
if (HasPauseTimeoutExpired(buffer) == false)
{
continue;
}
if (buffer.WriteActive && buffer.Written - buffer.Read < _readLimit && buffer.LastFlushTime + _flushTimeout > DateTime.Now)
{
continue;
}
var lineReader = OpenReadBufferStream(buffer, out streamLock);
if (lineReader == null)
{
continue;
}
if (lineReader.ReadFinished)
{
try
{
if (buffer.WriteActive == false)
{
lineReader.Close();
DeleteBuffer(streamLock.Path);
}
}
catch (Exception e)
{
_logger.LogError(e, $"Delete buffer '{streamLock.Path}' error.");
}
continue;
}
bufferName = buffer.Name;
return(lineReader);
}
streamLock = null;
return(null);
}
finally
{
markLock.Unlock();
}
}
public static ValueTask <IDisposable> Lock(FilePath path, IEnumerable <TimeSpan>?retryIntervals = null, CancellationToken cancellationToken = default)
{
var fileLock = new FileLock(path, retryIntervals);
return(fileLock.Lock(cancellationToken));
}
private void Flush(bool force, bool push = true)
{
try
{
List <TItem> flushBuffer;
lock (_memoryBuffer)
{
flushBuffer = _memoryBuffer;
var bufferCount = flushBuffer.Count;
if (bufferCount == 0)
{
return;
}
if (force == false && bufferCount < _memoryBufferLimit)
{
return;
}
_memoryBuffer = RentMemoryBuffer();
}
lock (_syncFlush)
{
try
{
if (_streamWriter == null)
{
_streamWriter = OpenWriteBufferStream(out _writeBuffer, out _writerLock);
}
var count = 0;
try
{
_writerLock.Lock();
_streamWriter.BaseStream.Seek(0, SeekOrigin.End);
foreach (var logEvent in flushBuffer)
{
WriteStartLine(_streamWriter);
_buffer.FormatItem(logEvent, _streamWriter);
WriteEndLine(_streamWriter);
count++;
}
_streamWriter.Flush();
}
finally
{
_writerLock.Unlock();
}
ReleaseMemoryBuffer(flushBuffer);
if (MarkWrite(_markLock, _writeBuffer, count).WriteActive == false)
{
_streamWriter.Close();
_streamWriter = null;
_writerLock = null;
}
}
catch (Exception e)
{
_logger.LogError(e, "Flush.");
}
}
}
finally
{
if (push)
{
PushBlock();
}
}
}
[System.Security.SecurityCritical] // auto-generated
#endif
public static IEnumerable <IsolatedStorageGroup> GetGroups()
{
List <IsolatedStorageGroup> groups = new List <IsolatedStorageGroup>();
#if !FEATURE_LEGACYNETCF
try {
foreach (string groupDir in Directory.UnsafeGetDirectories(Path.Combine(IsolatedStorageFile.IsolatedStorageRoot, IsolatedStorageFile.s_GroupPathPrefix), "*", SearchOption.TopDirectoryOnly))
{
string idFile = Path.Combine(groupDir, IsolatedStorageFile.s_IdFileName);
string id;
FileLock groupLock = FileLock.GetFileLock(Path.Combine(IsolatedStorageFile.IsolatedStorageRoot, IsolatedStorageFile.s_LockPathPrefix), IsolatedStorageFile.s_GroupPathPrefix + "-" + DirectoryInfo.UnsafeCreateDirectoryInfo(groupDir).Name);
try {
groupLock.Lock();
if (!File.UnsafeExists(Path.Combine(groupDir, IsolatedStorageFile.s_CleanupFileName)))
{
id = File.UnsafeReadAllText(idFile);
if (IsolatedStorageAccountingInfo.IsAccountingInfoValid(groupDir))
{
using (IsolatedStorageAccountingInfo accountingInfo = new IsolatedStorageAccountingInfo(groupDir)) {
groups.Add(new IsolatedStorageGroup(id, accountingInfo.Quota, accountingInfo.UsedSize, groupDir));
}
}
else
{
// In this case we've tried to deseriaize a group that doesn't have valid data. We'll try to remove it.
try {
new IsolatedStorageGroup(id, 0, 0, groupDir).Remove();
} catch (Exception) {
// We couldn't remove the group for some reason. Ignore it and move on.
}
}
}
} catch (IOException) {
// There isn't anything we can really do about this. Ignoring these sorts of issues shouldn't lead to corruption.
} catch (UnauthorizedAccessException) {
// There isn't anything we can really do about this. Ignoring these sorts of issues shouldn't lead to corruption.
} finally {
groupLock.Unlock();
}
}
} catch (IOException) {
// There isn't anything we can really do about this. Ignoring these sorts of issues shouldn't lead to corruption.
} catch (UnauthorizedAccessException) {
// There isn't anything we can really do about this. Ignoring these sorts of issues shouldn't lead to corruption.
}
#else
try {
using (IsolatedStorageFile isf = IsolatedStorageFile.GetUserStoreForApplication()) {
groups.Add(new IsolatedStorageGroup(isf.GroupName, Int64.MaxValue, 0, IsolatedStorageFile.IsolatedStorageRoot));
}
} catch (IOException) {
// There isn't anything we can really do about this. Ignoring these sorts of issues shouldn't lead to corruption.
} catch (UnauthorizedAccessException) {
// There isn't anything we can really do about this. Ignoring these sorts of issues shouldn't lead to corruption.
} catch (IsolatedStorageException) {
// There isn't anything we can really do about this. Ignoring these sorts of issues shouldn't lead to corruption.
}
#endif
return(groups);
}
