When Cura is starting up, it reads the authentication data from the preferences (cura.cfg). If
the auth tokens have previously been stored in the keyring, it means that their values will be null
in the cura.cfg file. Therefore, on startup, Cura reads the tokens as none from the preferences and
then sets the empty values in the keyring as tokens. This leads to the user being signed off every
time Cura restarts on Mac.
On Windows, the access token was still stored in the preferences, so on startup it was safe. The
refresh token, on the other hand, had the same issue as on Mac, which means that on startup it was
read as None from the cura.cfg and was stored in the keyring as an empty string. This meant that,
even though on startup (on windows) the user was kept signed in, the next time Cura was attempting
to refresh the access token (after 7-8 minutes), it wouldn't be able, since its refresh token was
read as "" from the keyring. Also, if the user would close Cura and reopen it after 10 minutes
(so after the access token had expired) then they would be signed off on windows too.
This commit fixes that by making sure that if the given value of the refresh and access tokens are
empty, then they will not be stored in the keyring.
CURA-8178
So libnest2d is giving a segfault when it's being triggered without any disallowed areas. This is because we then give a single disallowed area for the border around the build plate, and give this disallowed area 0 vertices. Because libnest2d doesn't do defensive coding here, it's going to crash, taking Cura along with it. The crash is in libnest2d's function 'libnest2d::_Item<ClipperLib::Polygon>::rightmostTopVertex()'.
This segfault started happening recently in Cura. However it only happens when there are no disallowed areas. Steps to reproduce the error are:
- Use Custom FFF Printer.
- Set the Adhesion Type setting to 'None'.
- Load any two models.
I tracked the segfault down to this commit: 74ddbaab4b . That commit by itself is slightly mysterious but looks fine to me. It did give the hint that this segfault might be caused by empty polygons though. So for that reason, I figured that filtering out the empty polygons here in the arranger might fix it; and indeed it does. Passing empty polygons as fixed/disallowed areas is useless and invalid anyway. Apparently libnest2d doesn't deal well with it, but we might as well not send those polygons over then.
If the user account scope is outdated, delete it when upgrading from 4.8 to 4.9. This means that
the user will have to log in again, to make sure they get the correct account scope.
CURA-8093
The Cura 4.9 release will have expanded functionality. If you have a plug-in that uses this functionality, marking it as using SDK 7.5.0 will notify older Cura releases that they can't use that plug-in.
Write an empty string as value to the keyring if None is parsed and
return a None value if an empty string was parsed from the keyring.
CURA-7180_keyring_none_value
So there is an issue with keyring w.r.t. frozen installs (maybe also local). If you have pywin32 installed, it works fine locally. Take a note here, that a variant of this package, pywin32-ctypes, a rudimentary version of that package that works wholly within python, is already installed as its a dependency for keyring on windows. Due to an unknown reason, when running it fails to detect this, so some workaround is needed, _or_ the 'normal' pywin32 package should be installed. However, problems occurred when attempts where made to install pywin32 via cx_freeze. Then the actual workaround was encountered (https://github.com/jaraco/keyring/issues/468), which _should_ hopefully let use use the keyring on windows without needing the 'full' version of pywin32.
CURA-7180
The Windows Credential Manager allows for up to 256bits passwords. If a password longer than that
is attempted to be written, it will throw a BaseException.
CURA-7180
Place images in resources/images/whats_new/N.format and texts in resources/texts/whats_new/N.format where N is the ordinal and format the respective allowed formats.
CURA-8014
There's an extensive explanation in the documentation. But truth be told, I don't know why the conversion of global stack to QObject fails after the main window is closed. This may be something in PyQt as it doesn't seem to happen for Nallath who is still on PyQt5.11, but did update Qt to 5.14. So this should be considered a workaround.
This is currently just ONE of the reasons why the application crashes on exit in PyQt5.14+. There is another, much more mysterious issue that is causing the application to segfault on exit, which is still happening. But if it didn't happen it would otherwise still crash on this, so this needs to be solved anyway.
Contributes to issue CURA-7813.
It's possible that a profile is no longer in the registry by the time it gets to that point in the list if this clean-up is triggered by the very action of deleting a profile.
Fixes Sentry issue CURA-1T5.
