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Fix bug where we added duplicate event IDs as auth_events #6560
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richvdh
approved these changes
Dec 17, 2019
synapse/event_auth.py
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| (EventTypes.Member, event.sender), | ||
| (EventTypes.Create, ""), | ||
| ] | ||
| auth_types = set( |
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might be a shade more efficient to use a set literal rather than construct the set from a tuple?
auth_types = {
(EventTypes.PowerLevels, ""),
(EventTypes.Member, event.sender),
(EventTypes.Create, ""),
}
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I keep forgetting about set tuples
richvdh
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Dec 18, 2019
Synapse 1.7.1 (2019-12-18) ========================== This release includes several security fixes as well as a fix to a bug exposed by the security fixes. Administrators are encouraged to upgrade as soon as possible. Security updates ---------------- - Fix a bug which could cause room events to be incorrectly authorized using events from a different room. ([\#6501](#6501), [\#6503](#6503), [\#6521](#6521), [\#6524](#6524), [\#6530](#6530), [\#6531](#6531)) - Fix a bug causing responses to the `/context` client endpoint to not use the pruned version of the event. ([\#6553](#6553)) - Fix a cause of state resets in room versions 2 onwards. ([\#6556](#6556), [\#6560](#6560)) Bugfixes -------- - Fix a bug which could cause the federation server to incorrectly return errors when handling certain obscure event graphs. ([\#6526](#6526), [\#6527](#6527))
babolivier
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Sep 1, 2021
* commit '502942253': Fix bug where we added duplicate event IDs as auth_events (#6560)
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All other call sites iterated through the list and (eventually) created dicts, which is why this isn't a problem elsewhere.
Broke in #6556.