private void Tox_OnFileSendRequestReceived(object sender, ToxEventArgs.FileSendRequestEventArgs e)
{
var transfer = new FileTransfer(e.FileNumber, e.FriendNumber, e.FileKind, FileTransferDirection.Incoming);
transfer.Name = e.FileName;
transfer.Size = e.FileSize;
switch (e.FileKind)
{
case ToxFileKind.Avatar:
{
if (e.FileSize == 0)
{
//friend removed avatar, remove it from our store too
ProfileManager.Instance.AvatarManager.RemoveAvatar(e.FriendNumber);
_tox.FileControl(e.FriendNumber, e.FileNumber, ToxFileControl.Cancel);
Debugging.Write("Friend removed avatar");
break;
}
if (e.FileSize > 1 << 16)
{
//we don't like this avatar, it's too big
_tox.FileControl(e.FriendNumber, e.FileNumber, ToxFileControl.Cancel);
Debugging.Write("Avatar too big, ignoring");
break;
}
if (ProfileManager.Instance.AvatarManager.Contains(e.FriendNumber))
{
//compare hashes to see if we already have this avatar
byte[] hash = _tox.FileGetId(e.FriendNumber, e.FileNumber);
if (hash != null && ProfileManager.Instance.AvatarManager.HashMatches(e.FriendNumber, hash))
{
//we already have this avatar, cancel the transfer
_tox.FileControl(e.FriendNumber, e.FileNumber, ToxFileControl.Cancel);
break;
}
}
var error = ToxErrorFileControl.Ok;
if (!_tox.FileControl(e.FriendNumber, e.FileNumber, ToxFileControl.Resume, out error))
{
Debugging.Write("Failed to accept avatar transfer request: " + error);
break;
}
var avatarPath = ProfileManager.Instance.AvatarManager.GetAvatarFilename(e.FriendNumber);
if (avatarPath == null)
{
Debugging.Write("Could not find public key for friend");
break;
}
if (!_transfers.ContainsKey(transfer))
{
//catch any scary exceptions (no access, file already in use and whatnot)
try { _transfers.Add(transfer, new FileStream(avatarPath, FileMode.Create)); }
catch (Exception ex)
{
Debugging.Write("Can't open filestream: " + ex.ToString());
}
}
else
{
Debugging.Write("We already have a transfer with that number!");
}
break;
}
case ToxFileKind.Data:
{
if (!_transfers.ContainsKey(transfer))
{
_transfers.Add(transfer, null);
}
else
{
Debugging.Write("We already have a transfer with that number!");
return;
}
MainWindow.Instance.UInvoke(() =>
{
var friend = MainWindow.Instance.ViewModel.CurrentFriendListView.FindFriend(e.FriendNumber);
if (friend == null)
{
return;
}
(friend.ConversationView as ConversationViewModel).AddTransfer(transfer);
});
break;
}
}
Debugging.Write("New file send request: " + e.FileKind.ToString());
}