| public Seek ( long offset, SeekOrigin origin ) : long | ||
| offset | long | |
| origin | SeekOrigin | |
| return | long | |
private void EncodeThread()
{
for (;;)
{
Thread.Sleep(1000 * 1);
if (this.State == ManagerState.Stop) return;
BackgroundUploadItem item = null;
try
{
lock (_thisLock)
{
if (_settings.UploadItems.Count > 0)
{
item = _settings.UploadItems
.Where(n => n.State == BackgroundUploadState.Encoding)
.FirstOrDefault();
}
}
}
catch (Exception)
{
return;
}
if (item == null) continue;
try
{
if (item.Groups.Count == 0 && item.Keys.Count == 0)
{
Stream stream = null;
try
{
if (item.Scheme == "Broadcast")
{
if (item.Type == "Link")
{
var value = item.Link;
if (value == null) throw new FormatException();
stream = ContentConverter.ToStream(value);
}
else if (item.Type == "Profile")
{
var value = item.Profile;
if (value == null) throw new FormatException();
stream = ContentConverter.ToStream(value);
}
else if (item.Type == "Store")
{
var value = item.Store;
if (value == null) throw new FormatException();
stream = ContentConverter.ToStream(value);
}
}
else if (item.Scheme == "Unicast")
{
if (item.Type == "Message")
{
var value = item.Message;
if (value == null) throw new FormatException();
stream = ContentConverter.ToCryptoStream(value, item.ExchangePublicKey);
}
}
else if (item.Scheme == "Multicast")
{
if (item.Type == "Message")
{
var value = item.Message;
if (value == null) throw new FormatException();
stream = ContentConverter.ToStream(value);
}
}
else
{
throw new FormatException();
}
if (stream.Length == 0)
{
lock (_thisLock)
{
if (item.Scheme == "Broadcast")
{
_connectionsManager.Upload(new BroadcastMetadata(item.Type, item.CreationTime, null, item.DigitalSignature));
}
else if (item.Scheme == "Unicast")
{
_connectionsManager.Upload(new UnicastMetadata(item.Type, item.Signature, item.CreationTime, null, item.DigitalSignature));
}
else if (item.Scheme == "Multicast")
{
_connectionsManager.Upload(new MulticastMetadata(item.Type, item.Tag, item.CreationTime, null, null, item.DigitalSignature));
}
item.State = BackgroundUploadState.Completed;
}
}
else
{
KeyCollection keys = null;
try
{
using (ProgressStream encodingProgressStream = new ProgressStream(stream, (object sender, long readSize, long writeSize, out bool isStop) =>
{
isStop = (this.State == ManagerState.Stop || !_settings.UploadItems.Contains(item));
}, 1024 * 1024, true))
{
if (stream.Length == 0) throw new InvalidOperationException("Stream Length");
encodingProgressStream.Seek(0, SeekOrigin.Begin);
item.State = BackgroundUploadState.Encoding;
keys = _cacheManager.Encoding(encodingProgressStream, CompressionAlgorithm.None, CryptoAlgorithm.None, null, item.BlockLength, item.HashAlgorithm);
}
}
catch (StopIoException)
{
continue;
}
lock (_thisLock)
{
if (!_settings.UploadItems.Contains(item))
{
foreach (var key in keys)
{
_cacheManager.Unlock(key);
}
continue;
}
foreach (var key in keys)
{
item.UploadKeys.Add(key);
item.LockedKeys.Add(key);
}
item.Keys.AddRange(keys);
}
}
}
finally
{
if (stream != null) stream.Dispose();
}
}
else if (item.Groups.Count == 0 && item.Keys.Count == 1)
{
BroadcastMetadata broadcastMetadata = null;
UnicastMetadata unicastMetadata = null;
MulticastMetadata multicastMetadata = null;
{
var metadata = new Metadata(item.Depth, item.Keys[0], CompressionAlgorithm.None, CryptoAlgorithm.None, null);
if (item.Scheme == "Broadcast")
{
broadcastMetadata = new BroadcastMetadata(item.Type, item.CreationTime, metadata, item.DigitalSignature);
}
else if (item.Scheme == "Unicast")
{
unicastMetadata = new UnicastMetadata(item.Type, item.Signature, item.CreationTime, metadata, item.DigitalSignature);
}
else if (item.Scheme == "Multicast")
{
var miner = new Miner(CashAlgorithm.Version1, item.MiningLimit, item.MiningTime);
try
{
var task = Task.Run(() =>
{
return new MulticastMetadata(item.Type, item.Tag, item.CreationTime, metadata, miner, item.DigitalSignature);
});
while (!task.IsCompleted)
{
if (this.State == ManagerState.Stop) miner.Cancel();
lock (_thisLock)
{
if (!_settings.UploadItems.Contains(item))
{
miner.Cancel();
}
}
Thread.Sleep(1000);
}
multicastMetadata = task.Result;
}
catch (Exception)
{
continue;
}
}
}
lock (_thisLock)
{
if (!_settings.UploadItems.Contains(item)) continue;
if (item.Scheme == "Broadcast")
{
_connectionsManager.Upload(broadcastMetadata);
}
else if (item.Scheme == "Unicast")
{
_connectionsManager.Upload(unicastMetadata);
}
else if (item.Scheme == "Multicast")
{
_connectionsManager.Upload(multicastMetadata);
}
item.Keys.Clear();
foreach (var key in item.UploadKeys)
{
_connectionsManager.Upload(key);
}
item.State = BackgroundUploadState.Uploading;
this.CheckState(item);
}
}
else if (item.Keys.Count > 0)
{
var length = Math.Min(item.Keys.Count, 128);
var keys = new KeyCollection(item.Keys.Take(length));
Group group = null;
try
{
using (var tokenSource = new CancellationTokenSource())
{
var task = _cacheManager.ParityEncoding(keys, item.HashAlgorithm, item.BlockLength, item.CorrectionAlgorithm, tokenSource.Token);
while (!task.IsCompleted)
{
if (this.State == ManagerState.Stop || !_settings.UploadItems.Contains(item)) tokenSource.Cancel();
Thread.Sleep(1000);
}
group = task.Result;
}
}
catch (Exception)
{
continue;
}
lock (_thisLock)
{
if (!_settings.UploadItems.Contains(item))
{
foreach (var key in group.Keys.Skip(group.InformationLength))
{
_cacheManager.Unlock(key);
}
continue;
}
foreach (var key in group.Keys.Skip(group.InformationLength))
{
item.UploadKeys.Add(key);
item.LockedKeys.Add(key);
}
item.Groups.Add(group);
item.Keys.RemoveRange(0, length);
}
}
else if (item.Groups.Count > 0 && item.Keys.Count == 0)
{
var index = new Index();
index.Groups.AddRange(item.Groups);
KeyCollection keys = null;
try
{
using (var stream = index.Export(_bufferManager))
using (ProgressStream encodingProgressStream = new ProgressStream(stream, (object sender, long readSize, long writeSize, out bool isStop) =>
{
isStop = (this.State == ManagerState.Stop || !_settings.UploadItems.Contains(item));
}, 1024 * 1024, true))
{
encodingProgressStream.Seek(0, SeekOrigin.Begin);
item.State = BackgroundUploadState.Encoding;
keys = _cacheManager.Encoding(encodingProgressStream, CompressionAlgorithm.None, CryptoAlgorithm.None, null, item.BlockLength, item.HashAlgorithm);
}
}
catch (StopIoException)
{
continue;
}
lock (_thisLock)
{
if (!_settings.UploadItems.Contains(item))
{
foreach (var key in keys)
{
_cacheManager.Unlock(key);
}
continue;
}
foreach (var key in keys)
{
item.UploadKeys.Add(key);
item.LockedKeys.Add(key);
}
item.Keys.AddRange(keys);
item.Depth++;
item.Groups.Clear();
}
}
}
catch (Exception e)
{
item.State = BackgroundUploadState.Error;
Log.Error(e);
this.Remove(item);
}
}
}
private void UploadManagerThread()
{
for (; ; )
{
Thread.Sleep(1000 * 1);
if (this.State == ManagerState.Stop) return;
BackgroundUploadItem item = null;
try
{
lock (this.ThisLock)
{
if (_settings.BackgroundUploadItems.Count > 0)
{
item = _settings.BackgroundUploadItems
.Where(n => n.State == BackgroundUploadState.Encoding)
.FirstOrDefault();
}
}
}
catch (Exception)
{
return;
}
if (item == null) continue;
try
{
if (item.Groups.Count == 0 && item.Keys.Count == 0)
{
Stream stream = null;
try
{
if (item.Type == BackgroundItemType.Link)
{
var link = item.Value as Link;
if (link == null) throw new FormatException();
stream = link.Export(_bufferManager);
}
else if (item.Type == BackgroundItemType.Store)
{
var store = item.Value as Store;
if (store == null) throw new FormatException();
stream = store.Export(_bufferManager);
}
else
{
throw new FormatException();
}
if (stream.Length == 0)
{
lock (this.ThisLock)
{
item.Seed.Rank = 0;
if (item.DigitalSignature != null)
{
item.Seed.CreateCertificate(item.DigitalSignature);
}
_connectionsManager.Upload(item.Seed);
item.State = BackgroundUploadState.Completed;
}
}
else
{
KeyCollection keys = null;
byte[] cryptoKey = null;
try
{
using (ProgressStream encodingProgressStream = new ProgressStream(stream, (object sender, long readSize, long writeSize, out bool isStop) =>
{
isStop = (this.State == ManagerState.Stop || !_settings.BackgroundUploadItems.Contains(item));
}, 1024 * 1024, true))
{
item.Seed.Length = stream.Length;
if (item.Seed.Length == 0) throw new InvalidOperationException("Stream Length");
if (item.HashAlgorithm == HashAlgorithm.Sha256)
{
cryptoKey = Sha256.ComputeHash(encodingProgressStream);
}
encodingProgressStream.Seek(0, SeekOrigin.Begin);
item.State = BackgroundUploadState.Encoding;
keys = _cacheManager.Encoding(encodingProgressStream, item.CompressionAlgorithm, item.CryptoAlgorithm, cryptoKey, item.BlockLength, item.HashAlgorithm);
}
}
catch (StopIoException)
{
continue;
}
lock (this.ThisLock)
{
foreach (var key in keys)
{
item.UploadKeys.Add(key);
item.LockedKeys.Add(key);
}
item.CryptoKey = cryptoKey;
item.Keys.AddRange(keys);
}
}
}
finally
{
if (stream != null) stream.Dispose();
}
}
else if (item.Groups.Count == 0 && item.Keys.Count == 1)
{
lock (this.ThisLock)
{
item.Seed.Rank = item.Rank;
item.Seed.Key = item.Keys[0];
item.Keys.Clear();
item.Seed.CompressionAlgorithm = item.CompressionAlgorithm;
item.Seed.CryptoAlgorithm = item.CryptoAlgorithm;
item.Seed.CryptoKey = item.CryptoKey;
if (item.DigitalSignature != null)
{
item.Seed.CreateCertificate(item.DigitalSignature);
}
item.UploadKeys.Add(item.Seed.Key);
foreach (var key in item.UploadKeys)
{
_connectionsManager.Upload(key);
}
this.SetKeyCount(item);
foreach (var key in item.LockedKeys)
{
_cacheManager.Unlock(key);
}
item.LockedKeys.Clear();
item.State = BackgroundUploadState.Uploading;
_connectionsManager.Upload(item.Seed);
}
}
else if (item.Keys.Count > 0)
{
var length = Math.Min(item.Keys.Count, 128);
var keys = new KeyCollection(item.Keys.Take(length));
Group group = null;
try
{
group = _cacheManager.ParityEncoding(keys, item.HashAlgorithm, item.BlockLength, item.CorrectionAlgorithm, (object state2) =>
{
return (this.State == ManagerState.Stop || !_settings.BackgroundUploadItems.Contains(item));
});
}
catch (StopException)
{
continue;
}
lock (this.ThisLock)
{
foreach (var key in group.Keys.Skip(group.InformationLength))
{
item.UploadKeys.Add(key);
item.LockedKeys.Add(key);
}
item.Groups.Add(group);
item.Keys.RemoveRange(0, length);
}
}
else if (item.Groups.Count > 0 && item.Keys.Count == 0)
{
var index = new Index();
index.Groups.AddRange(item.Groups);
index.CompressionAlgorithm = item.CompressionAlgorithm;
index.CryptoAlgorithm = item.CryptoAlgorithm;
index.CryptoKey = item.CryptoKey;
byte[] cryptoKey = null;
KeyCollection keys = null;
try
{
using (var stream = index.Export(_bufferManager))
using (ProgressStream encodingProgressStream = new ProgressStream(stream, (object sender, long readSize, long writeSize, out bool isStop) =>
{
isStop = (this.State == ManagerState.Stop || !_settings.BackgroundUploadItems.Contains(item));
}, 1024 * 1024, true))
{
if (item.HashAlgorithm == HashAlgorithm.Sha256)
{
cryptoKey = Sha256.ComputeHash(encodingProgressStream);
}
encodingProgressStream.Seek(0, SeekOrigin.Begin);
item.State = BackgroundUploadState.Encoding;
keys = _cacheManager.Encoding(encodingProgressStream, item.CompressionAlgorithm, item.CryptoAlgorithm, cryptoKey, item.BlockLength, item.HashAlgorithm);
}
}
catch (StopIoException)
{
continue;
}
lock (this.ThisLock)
{
foreach (var key in keys)
{
item.UploadKeys.Add(key);
item.LockedKeys.Add(key);
}
item.CryptoKey = cryptoKey;
item.Keys.AddRange(keys);
item.Rank++;
item.Groups.Clear();
}
}
}
catch (Exception e)
{
item.State = BackgroundUploadState.Error;
Log.Error(e);
this.Remove(item);
}
}
}