Add experimental and preliminary policy-driven session limiting when logging in OAuth 2 sessions. #5221
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sandhose
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I'm going to assume TODO after this is mostly dealing with the compat API
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
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Part of: #4339
Intended for commit-by-commit review.
Introduces a soft and hard session limit. At login time, we count the user's existing sessions (OAuth 2, Compat and self-owned Personal) and refuse creation of a new one if the limit is reached. This is configurable by policy.
The soft limit will be used for interactive logins where the user could be shown a web UI to remove devices, whereas the hard limit will be used for
m.login.passwordlogins where the user can't be shown such a UI.Limitations:
These limitations will be handled in future PRs, but for now this is part of the experimental config section.