private async Task TryScheduleAttachmentDownload(SignalAttachment attachment)
{
if (Downloads.Count < 100)
{
if (attachment.Status != SignalAttachmentStatus.Finished && !Downloads.ContainsKey(attachment.Id))
{
SignalServiceAttachmentPointer attachmentPointer = attachment.ToAttachmentPointer();
IStorageFolder localFolder = ApplicationData.Current.LocalFolder;
IStorageFile tmpDownload = await Task.Run(async() =>
{
return(await ApplicationData.Current.LocalCacheFolder.CreateFileAsync(@"Attachments\" + attachment.Id + ".cipher", CreationCollisionOption.ReplaceExisting));
});
BackgroundDownloader downloader = new BackgroundDownloader();
downloader.SetRequestHeader("Content-Type", "application/octet-stream");
// this is the recommended way to call CreateDownload
// see https://docs.microsoft.com/en-us/uwp/api/windows.networking.backgroundtransfer.backgrounddownloader#Methods
DownloadOperation download = downloader.CreateDownload(new Uri(await MessageReceiver.RetrieveAttachmentDownloadUrl(CancelSource.Token, attachmentPointer)), tmpDownload);
attachment.Guid = download.Guid.ToString();
SignalDBContext.UpdateAttachmentGuid(attachment);
Downloads.Add(attachment.Id, download);
var downloadSuccessfulHandler = Task.Run(async() =>
{
Logger.LogInformation("Waiting for download {0}({1})", attachment.SentFileName, attachment.Id);
var t = await download.StartAsync();
await HandleSuccessfullDownload(attachment, tmpDownload, download);
});
}
}
}
private async Task HandleSuccessfullDownload(SignalAttachment attachment, IStorageFile tmpDownload, DownloadOperation download)
{
try
{
SemaphoreSlim.Wait(CancelSource.Token);
StorageFile plaintextFile = await ApplicationData.Current.LocalCacheFolder.CreateFileAsync(@"Attachments\" + attachment.Id + ".plain", CreationCollisionOption.ReplaceExisting);
using (var tmpFileStream = (await tmpDownload.OpenAsync(FileAccessMode.ReadWrite)).AsStream())
using (var plaintextFileStream = (await plaintextFile.OpenAsync(FileAccessMode.ReadWrite)).AsStream())
{
Logger.LogInformation("Decrypting to {0}\\{1}", plaintextFile.Path, plaintextFile.Name);
DecryptAttachment(attachment.ToAttachmentPointer(), tmpFileStream, plaintextFileStream);
}
Logger.LogInformation("Deleting tmpFile {0}", tmpDownload.Name);
await tmpDownload.DeleteAsync();
attachment.Status = SignalAttachmentStatus.Finished;
SignalDBContext.UpdateAttachmentStatus(attachment);
await DispatchAttachmentStatusChanged(download, attachment);
}
catch (Exception e)
{
Logger.LogError("HandleSuccessfullDownload failed: {0}\n{1}", e.Message, e.StackTrace);
}
finally
{
if (Downloads.ContainsKey(attachment.Id))
{
Downloads.Remove(attachment.Id);
}
SemaphoreSlim.Release();
}
}
protected override void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
Utils.EnableBackButton(BackButton_Click);
Attachments.Clear();
Attachment = e.Parameter as SignalAttachment;
Attachments.Add($"{ApplicationData.Current.LocalCacheFolder.Path}/Attachments/{Attachment.Id}.plain");
}
public static void UpdateAttachmentLocked(SignalAttachment sa)
{
lock (DBLock)
{
using (var ctx = new SignalDBContext())
{
ctx.Attachments.Update(sa);
ctx.SaveChanges();
}
}
}
public static void DeleteAttachment(SignalAttachment attachment)
{
lock (DBLock)
{
using (var ctx = new SignalDBContext())
{
ctx.Remove(attachment);
ctx.SaveChanges();
}
}
}
public void UpdateAttachment(SignalAttachment sa)
{
if (Collection != null)
{
IMessageView m = Collection.GetMessageByDbId(sa.Message.Id);
if (m != null)
{
var attachment = FindElementByName <Attachment>(m.AsFrameworkElement(), "Attachment");
attachment.HandleUpdate(sa);
}
}
}
internal static void UpdateAttachmentStatus(SignalAttachment attachment)
{
lock (DBLock)
{
using (var ctx = new SignalDBContext())
{
var savedAttachment = ctx.Attachments
.Where(a => a.Id == attachment.Id)
.First();
savedAttachment.Status = attachment.Status;
ctx.SaveChanges();
}
}
}
public void UpdateAttachment(SignalAttachment sa)
{
if (UnfinishedAttachmentsCache.ContainsKey(sa.Id))
{
var a = UnfinishedAttachmentsCache[sa.Id];
var messageItem = (ListViewItem)ConversationItemsControl.ContainerFromIndex(Collection.GetVirtualIndex(a.MessageIndex));
if (messageItem != null)
{
var message = FindElementByName <Message>(messageItem, "ListBoxItemContent");
var attachment = FindElementByName <Attachment>(message, "Attachment");
bool retain = attachment.HandleUpdate(sa);
if (!retain)
{
OutgoingCache.Remove(sa.Id);
}
}
}
}
public async Task ExportAttachment(SignalAttachment sa)
{
try
{
Logger.LogTrace("ExportAttachment() locking");
await SemaphoreSlim.WaitAsync(CancelSource.Token);
Logger.LogTrace("ExportAttachment() locked");
var savePicker = new Windows.Storage.Pickers.FileSavePicker
{
SuggestedStartLocation = Windows.Storage.Pickers.PickerLocationId.Downloads,
SuggestedFileName = sa.SentFileName ?? "signal"
};
savePicker.FileTypeChoices.Add("Any", new List <string>()
{
"."
});
var target_file = await savePicker.PickSaveFileAsync();
if (target_file != null)
{
CachedFileManager.DeferUpdates(target_file);
IStorageFile localCopy = await ApplicationData.Current.LocalCacheFolder.GetFileAsync($@"Attachments\{sa.Id}.plain");
await localCopy.CopyAndReplaceAsync(target_file);
Windows.Storage.Provider.FileUpdateStatus status = await CachedFileManager.CompleteUpdatesAsync(target_file);
}
}
catch (Exception e)
{
Logger.LogError("ExportAttachment failed: {0}\n{1}", e.Message, e.StackTrace);
}
finally
{
SemaphoreSlim.Release();
Logger.LogTrace("ExportAttachment() released");
}
}
private async Task RecoverDownloads()
{
var downloads = await BackgroundDownloader.GetCurrentDownloadsAsync();
foreach (DownloadOperation download in downloads)
{
try
{
SignalAttachment attachment = SignalDBContext.GetAttachmentByGuidNameLocked(download.Guid.ToString());
if (attachment != null)
{
if (!Downloads.ContainsKey(attachment.Id))
{
Logger.LogInformation("Creating attach task for attachment {0} ({1})", attachment.Id, download.Guid);
Downloads.Add(attachment.Id, download);
var t = Task.Run(async() =>
{
await download.AttachAsync();
await HandleSuccessfullDownload(attachment, download.ResultFile, download);
});
}
else
{
Logger.LogInformation("Attachment {0} ({1}) already has a running task", attachment.Id, download.Guid);
}
}
else
{
Logger.LogInformation("Aborting unrecognized download {0}", download.Guid);
download.AttachAsync().Cancel();
}
}
catch (Exception e)
{
Logger.LogError("TriageDownloads encountered an error: {0}\n{1}", e.Message, e.StackTrace);
}
}
}
public void StartAttachmentDownload(SignalAttachment sa)
{
//TODO lock, check if already downloading, start a new download if not exists
Task.Run(async() =>
{
try
{
Logger.LogTrace("StartAttachmentDownload() locking");
SemaphoreSlim.Wait(CancelSource.Token);
Logger.LogTrace("StartAttachmentDownload() locked");
await TryScheduleAttachmentDownload(sa);
}
catch (Exception e)
{
Logger.LogError("StartAttachmentDownload failed: {0}\n{1}", e.Message, e.StackTrace);
}
finally
{
SemaphoreSlim.Release();
Logger.LogTrace("StartAttachmentDownload() released");
}
});
}
private async Task DispatchAttachmentStatusChanged(DownloadOperation op, SignalAttachment attachment)
{
try
{
List <Task> operations = new List <Task>();
foreach (var dispatcher in Frames.Keys)
{
var taskCompletionSource = new TaskCompletionSource <bool>();
await dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{
try
{
Frames[dispatcher].HandleAttachmentStatusChanged(attachment);
}
catch (Exception e)
{
Logger.LogError("DispatchAttachmentStatusChanged() dispatch failed: {0}\n{1}", e.Message, e.StackTrace);
}
finally
{
taskCompletionSource.SetResult(false);
}
});
operations.Add(taskCompletionSource.Task);
}
foreach (var t in operations)
{
await t;
}
}
catch (Exception e)
{
Logger.LogError("DispatchAttachmentStatusChanged encountered an error: {0}\n{1}", e.Message, e.StackTrace);
}
}
public SignalAttachmentContainer(SignalAttachment attachment, int attachmentIndex, int messageIndex)
{
Attachment = attachment;
AttachmentIndex = attachmentIndex;
MessageIndex = messageIndex;
}
private void HandleSignalMessage(SignalServiceEnvelope envelope, SignalServiceContent content, SignalServiceDataMessage dataMessage, bool isSync, long timestamp)
{
SignalMessageDirection type;
SignalContact author;
SignalMessageStatus status;
string threadId;
long composedTimestamp;
string body = dataMessage.Body != null ? dataMessage.Body : "";
if (dataMessage.Group != null)
{
var rawId = dataMessage.Group.GroupId;
threadId = Base64.encodeBytes(rawId);
var g = SignalDBContext.GetOrCreateGroupLocked(threadId, timestamp, this);
if (!g.CanReceive)
{
SignalServiceGroup group = new SignalServiceGroup()
{
Type = SignalServiceGroup.GroupType.REQUEST_INFO,
GroupId = rawId
};
SignalServiceDataMessage requestInfoMessage = new SignalServiceDataMessage()
{
Group = group,
Timestamp = Util.CurrentTimeMillis()
};
MessageSender.sendMessage(envelope.getSourceAddress(), requestInfoMessage);
}
composedTimestamp = envelope.getTimestamp();
}
else
{
if (isSync)
{
var sent = content.SynchronizeMessage.getSent().ForceGetValue();
threadId = SignalDBContext.GetOrCreateContactLocked(sent.getDestination().ForceGetValue(), timestamp, this).ThreadId;
composedTimestamp = sent.getTimestamp();
}
else
{
threadId = SignalDBContext.GetOrCreateContactLocked(envelope.getSource(), timestamp, this).ThreadId;
composedTimestamp = envelope.getTimestamp();
}
}
if (isSync)
{
type = SignalMessageDirection.Synced;
status = SignalMessageStatus.Confirmed;
author = null;
}
else
{
status = 0;
type = SignalMessageDirection.Incoming;
author = SignalDBContext.GetOrCreateContactLocked(envelope.getSource(), timestamp, this);
}
List <SignalAttachment> attachments = new List <SignalAttachment>();
SignalMessage message = new SignalMessage()
{
Direction = type,
Status = status,
Author = author,
Content = new SignalMessageContent()
{
Content = body
},
ThreadId = threadId,
DeviceId = (uint)envelope.getSourceDevice(),
Receipts = 0,
ComposedTimestamp = composedTimestamp,
ReceivedTimestamp = timestamp,
AttachmentsCount = (uint)attachments.Count,
Attachments = attachments
};
if (dataMessage.Attachments != null)
{
var receivedAttachments = dataMessage.Attachments;
foreach (var receivedAttachment in receivedAttachments)
{
var pointer = receivedAttachment.asPointer();
SignalAttachment sa = new SignalAttachment()
{
Message = message,
Status = (uint)SignalAttachmentStatus.Default,
SentFileName = pointer.FileName,
ContentType = "",
Key = pointer.Key,
Relay = pointer.Relay,
StorageId = pointer.Id
};
attachments.Add(sa);
}
}
Debug.WriteLine("received message: " + message.Content);
if (type == SignalMessageDirection.Incoming)
{
if (App.WindowActive)
{
Utils.TryVibrate(true);
}
else
{
SendTileNotification(message);
SendMessageNotification(message);
}
}
Windows.ApplicationModel.Core.CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, async() =>
{
await UIHandleIncomingMessage(message);
}).AsTask().Wait();
}
public void HandleAttachmentStatusChanged(SignalAttachment sa)
{
Locator.MainPageInstance.HandleAttachmentStatusChanged(sa);
}
private async Task HandleSignalMessage(SignalServiceEnvelope envelope, SignalServiceContent content, SignalServiceDataMessage dataMessage, bool isSync, long timestamp)
{
SignalMessageDirection type;
SignalContact author;
SignalMessageStatus status;
SignalConversation conversation;
long composedTimestamp;
string body = dataMessage.Body ?? "";
if (dataMessage.Group != null)
{
var rawId = dataMessage.Group.GroupId;
var threadId = Base64.EncodeBytes(rawId);
conversation = await SignalDBContext.GetOrCreateGroupLocked(threadId, timestamp);
if (!conversation.CanReceive)
{
SignalServiceGroup group = new SignalServiceGroup()
{
Type = SignalServiceGroup.GroupType.REQUEST_INFO,
GroupId = rawId
};
SignalServiceDataMessage requestInfoMessage = new SignalServiceDataMessage()
{
Group = group,
Timestamp = Util.CurrentTimeMillis()
};
SignalLibHandle.Instance.OutgoingQueue.Add(new SignalServiceDataMessageSendable(requestInfoMessage, envelope.GetSourceAddress()));
}
composedTimestamp = envelope.GetTimestamp();
}
else
{
if (isSync)
{
var sent = content.SynchronizeMessage.Sent;
conversation = await SignalDBContext.GetOrCreateContactLocked(sent.Destination.ForceGetValue(), timestamp);
composedTimestamp = sent.Timestamp;
}
else
{
conversation = await SignalDBContext.GetOrCreateContactLocked(envelope.GetSource(), timestamp);
composedTimestamp = envelope.GetTimestamp();
}
}
if (isSync)
{
type = SignalMessageDirection.Synced;
status = SignalMessageStatus.Confirmed;
author = null;
}
else
{
status = 0;
type = SignalMessageDirection.Incoming;
author = await SignalDBContext.GetOrCreateContactLocked(envelope.GetSource(), timestamp);
}
if (author != null && author.Blocked)
{
// Don't save blocked messages
return;
}
List <SignalAttachment> attachments = new List <SignalAttachment>();
SignalMessage message = new SignalMessage()
{
Direction = type,
Status = status,
Author = author,
Content = new SignalMessageContent()
{
Content = body.Truncate(2000)
},
ThreadId = conversation.ThreadId,
DeviceId = (uint)envelope.GetSourceDevice(),
Receipts = 0,
ComposedTimestamp = composedTimestamp,
ReceivedTimestamp = timestamp,
AttachmentsCount = (uint)attachments.Count,
Attachments = attachments
};
if (dataMessage.Attachments != null)
{
var receivedAttachments = dataMessage.Attachments;
foreach (var receivedAttachment in receivedAttachments)
{
var pointer = receivedAttachment.AsPointer();
SignalAttachment sa = new SignalAttachment()
{
Message = message,
Status = (uint)SignalAttachmentStatus.Default,
SentFileName = pointer.FileName,
ContentType = receivedAttachment.ContentType,
Key = pointer.Key,
Relay = pointer.Relay,
StorageId = pointer.Id,
Size = (long)pointer.Size,
Digest = pointer.Digest
};
attachments.Add(sa);
}
// Make sure to update attachments count
message.AttachmentsCount = (uint)attachments.Count;
}
await SignalLibHandle.Instance.SaveAndDispatchSignalMessage(message, null, conversation);
}
public bool HandleUpdate(SignalAttachment sa)
{
DataContext = sa;
return(Model.Status != SignalAttachmentStatus.Finished && Model.Status != SignalAttachmentStatus.Failed_Permanently);
}
private void UpdateUI()
{
if (Model != null)
{
UpdateMessageTextBlock();
if (Model.Author == null)
{
MessageAuthor.Visibility = Visibility.Collapsed;
MessageBoxBorder.Background = Utils.BackgroundOutgoing;
MessageContentTextBlock.Foreground = Utils.ForegroundOutgoing;
FancyTimestampBlock.Foreground = Utils.GetSolidColorBrush(127, "#454545");
HorizontalAlignment = HorizontalAlignment.Right;
FooterPanel.HorizontalAlignment = HorizontalAlignment.Right;
if (Model.Status == SignalMessageStatus.Pending)
{
CheckImage.Visibility = Visibility.Collapsed;
DoubleCheckImage.Visibility = Visibility.Collapsed;
ResendTextBlock.Visibility = Visibility.Collapsed;
}
else if (Model.Status == SignalMessageStatus.Confirmed)
{
CheckImage.Visibility = Visibility.Visible;
DoubleCheckImage.Visibility = Visibility.Collapsed;
ResendTextBlock.Visibility = Visibility.Collapsed;
}
else if (Model.Status == SignalMessageStatus.Received)
{
CheckImage.Visibility = Visibility.Collapsed;
DoubleCheckImage.Visibility = Visibility.Visible;
ResendTextBlock.Visibility = Visibility.Collapsed;
}
else
{
CheckImage.Visibility = Visibility.Collapsed;
DoubleCheckImage.Visibility = Visibility.Collapsed;
ResendTextBlock.Visibility = Visibility.Visible;
}
}
else
{
CheckImage.Visibility = Visibility.Collapsed;
DoubleCheckImage.Visibility = Visibility.Collapsed;
ResendTextBlock.Visibility = Visibility.Collapsed;
if (Model.ThreadId.EndsWith("="))
{
MessageAuthor.Visibility = Visibility.Visible;
MessageAuthor.Text = Model.Author.ThreadDisplayName;
}
else
{
MessageAuthor.Visibility = Visibility.Collapsed;
}
MessageBoxBorder.Background = Model.Author.Color != null?Utils.GetBrushFromColor(Model.Author.Color) : Utils.GetBrushFromColor(Utils.CalculateDefaultColor(Model.Author.ThreadDisplayName));
MessageAuthor.Foreground = Utils.GetSolidColorBrush(204, "#ffffff");
MessageContentTextBlock.Foreground = Utils.ForegroundIncoming;
FancyTimestampBlock.Foreground = Utils.GetSolidColorBrush(127, "#ffffff");
HorizontalAlignment = HorizontalAlignment.Left;
FooterPanel.HorizontalAlignment = HorizontalAlignment.Left;
}
FancyTimestampBlock.Text = Utils.GetTimestamp(Model.ComposedTimestamp);
HasAttachment = false;
if (Model.Attachments?.Count > 0)
{
HasAttachment = true;
Attachment = Model.Attachments[0];
}
}
}
private void HandleSignalMessage(SignalServiceEnvelope envelope, SignalServiceContent content, SignalServiceDataMessage dataMessage, bool isSync, long timestamp)
{
SignalMessageDirection type;
SignalContact author;
SignalMessageStatus status;
SignalConversation conversation;
long composedTimestamp;
string body = dataMessage.Body ?? "";
if (dataMessage.Group != null)
{
var rawId = dataMessage.Group.GroupId;
var threadId = Base64.encodeBytes(rawId);
conversation = SignalDBContext.GetOrCreateGroupLocked(threadId, timestamp);
if (!conversation.CanReceive)
{
SignalServiceGroup group = new SignalServiceGroup()
{
Type = SignalServiceGroup.GroupType.REQUEST_INFO,
GroupId = rawId
};
SignalServiceDataMessage requestInfoMessage = new SignalServiceDataMessage()
{
Group = group,
Timestamp = Util.CurrentTimeMillis()
};
//MessageSender.sendMessage(envelope.getSourceAddress(), requestInfoMessage); TODO
}
composedTimestamp = envelope.getTimestamp();
}
else
{
if (isSync)
{
var sent = content.SynchronizeMessage.getSent().ForceGetValue();
conversation = SignalDBContext.GetOrCreateContactLocked(sent.getDestination().ForceGetValue(), timestamp);
composedTimestamp = sent.getTimestamp();
}
else
{
conversation = SignalDBContext.GetOrCreateContactLocked(envelope.getSource(), timestamp);
composedTimestamp = envelope.getTimestamp();
}
}
if (isSync)
{
type = SignalMessageDirection.Synced;
status = SignalMessageStatus.Confirmed;
author = null;
}
else
{
status = 0;
type = SignalMessageDirection.Incoming;
author = SignalDBContext.GetOrCreateContactLocked(envelope.getSource(), timestamp);
}
List <SignalAttachment> attachments = new List <SignalAttachment>();
SignalMessage message = new SignalMessage()
{
Direction = type,
Status = status,
Author = author,
Content = new SignalMessageContent()
{
Content = body
},
ThreadId = conversation.ThreadId,
DeviceId = (uint)envelope.getSourceDevice(),
Receipts = 0,
ComposedTimestamp = composedTimestamp,
ReceivedTimestamp = timestamp,
AttachmentsCount = (uint)attachments.Count,
Attachments = attachments
};
if (dataMessage.Attachments != null)
{
var receivedAttachments = dataMessage.Attachments;
foreach (var receivedAttachment in receivedAttachments)
{
var pointer = receivedAttachment.asPointer();
SignalAttachment sa = new SignalAttachment()
{
Message = message,
Status = (uint)SignalAttachmentStatus.Default,
SentFileName = pointer.FileName,
ContentType = "",
Key = pointer.Key,
Relay = pointer.Relay,
StorageId = pointer.Id
};
attachments.Add(sa);
}
}
SignalLibHandle.Instance.SaveAndDispatchSignalMessage(message, conversation);
}
