Add negative label filtering for cards
Two conflicts, both from work that landed while this branch was open.
In the endless list query, master had added an ORDER BY so the cursor and the
limit agree. The exclusion clause belongs in the WHERE part, so it is placed
before it rather than after; the other way round the statement does not parse.
The label item had been restructured here for the tri-state filter and had
gained a tooltip on master. The restructured version is kept and the tooltip
put back on top of it, which also brings back the translation hook this branch
had dropped.
Choosing a view and finding the board's default again after every reload is
the board forgetting something the reader clearly meant.
The choice lives in `sessionStorage`, not on the account. A view is how one
person is looking at a board right now, not a property of the board: two
windows may hold the same board open as a grid and as a list, and neither is
wrong. A stored preference would make one of them change under the other's
hands.
The context is stored alongside and has to match on the way back out, so a
view picked in the archive does not follow the board into its own context. A
view this build no longer knows falls through to the board's default, as does
anything stored while the browser refuses to keep it.
Users can pick an inactivity timeout in their preferences. A warning
appears 30 seconds before, and activity or a logout is synchronised
across open tabs.
The OIDC implementation merged in https://github.com/plankanban/planka/pull/491 is flawed for multiple reasons.
It assumes that the access_token returned by the IDP has to be a JWT parseable by the RP which is not the case [1].
Many major IDPs do issue tokens which are not JWTs and RPs should not rely on the contents of these at all.
The only signed token which has a standardized format for direct RP consumption is the OIDC ID token (id_token), but this by default doesn't contain many claims, especially role claims are omitted from them by default for size reasons. To get these additional claims into the ID token, one needs an IDP with support for the "claims" parameter.
It requires manual specification of the JWKS URL which is mandatory in any OIDC discovery document and thus never needs to be manually specified.
It also makes the questionable decision to use a client-side code flow with PKCE where a normal code flow would be much more appropriate as all user data is processed in the backend which can securely hold a client secret (confidential client). This has far wider IDP support, is safer (due to direct involvement of the IDP in obtaining user information) and doesn't require working with ID tokens and claim parameters.
By using a server-side code flow we can also offload most complexity to the server alone, no longer requiring an additional OIDC library on the web client.
Also silent logout doesn't work on most IDPs for security reasons, one needs to actually redirect the user over to the IDP, which then prompts them once more if they actually want to log out.
This implementation should work with any OIDC-compliant IDP and even OAuth 2.0-only IDPs as long as they serve and OIDC discovery document.
[1] rfc-editor.org/rfc/rfc6749#section-5.1
Daniel Hiller