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Prevent clients from reporting nonexistent events. #13779
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babolivier
suggested changes
Sep 29, 2022
| @@ -61,6 +61,14 @@ async def on_POST( | |||
| Codes.BAD_JSON, | |||
| ) | |||
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| event = await self.hs.get_event_handler().get_event( | |||
| requester.user, room_id, event_id, show_redacted=False | |||
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I could see cases where it's useful to be able to report an event that's been redacted. We keep redacted events in db for a few days (7 by default iirc) before purging them, so someone might want to report them to bring them up to the server's admins/T&S team, or their report might be racing with the redaction, etc.
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We don't care about fetching the redacted content here: this doesn't ignore redacted events, it just returns the redacted version (but since we only do this to check the event exists, it's OK I believe)
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@reivilibre Is this worth finishing up? Looks like it needs a quick test! |
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clokep
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Feb 14, 2023
clokep
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Feb 14, 2023
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| raise NotFoundError( | ||
| "Unable to report event: it does not exist or you aren't able to see it." | ||
| ) |
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This isn't really part of the spec, but I guess a 404 is reasonable?
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yeah, best I can think of short of speccing something
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Mar 5, 2023
Synapse 1.78.0 (2023-02-28) =========================== Bugfixes -------- - Fix a bug introduced in Synapse 1.76 where 5s delays would occasionally occur in deployments using workers. ([\#15150](matrix-org/synapse#15150)) Synapse 1.78.0rc1 (2023-02-21) ============================== Features -------- - Implement the experimental `exact_event_match` push rule condition from [MSC3758](matrix-org/matrix-spec-proposals#3758). ([\#14964](matrix-org/synapse#14964)) - Add account data to the command line [user data export tool](https://matrix-org.github.io/synapse/v1.78/usage/administration/admin_faq.html#how-can-i-export-user-data). ([\#14969](matrix-org/synapse#14969)) - Implement [MSC3873](matrix-org/matrix-spec-proposals#3873) to disambiguate push rule keys with dots in them. ([\#15004](matrix-org/synapse#15004)) - Allow Synapse to use a specific Redis [logical database](https://redis.io/commands/select/) in worker-mode deployments. ([\#15034](matrix-org/synapse#15034)) - Tag opentracing spans for federation requests with the name of the worker serving the request. ([\#15042](matrix-org/synapse#15042)) - Implement the experimental `exact_event_property_contains` push rule condition from [MSC3966](matrix-org/matrix-spec-proposals#3966). ([\#15045](matrix-org/synapse#15045)) - Remove spurious `dont_notify` action from the defaults for the `.m.rule.reaction` pushrule. ([\#15073](matrix-org/synapse#15073)) - Update the error code returned when user sends a duplicate annotation. ([\#15075](matrix-org/synapse#15075)) Bugfixes -------- - Prevent clients from reporting nonexistent events. ([\#13779](matrix-org/synapse#13779)) - Return spec-compliant JSON errors when unknown endpoints are requested. ([\#14605](matrix-org/synapse#14605)) - Fix a long-standing bug where the room aliases returned could be corrupted. ([\#15038](matrix-org/synapse#15038)) - Fix a bug introduced in Synapse 1.76.0 where partially-joined rooms could not be deleted using the [purge room API](https://matrix-org.github.io/synapse/latest/admin_api/rooms.html#delete-room-api). ([\#15068](matrix-org/synapse#15068)) - Fix a long-standing bug where federated joins would fail if the first server in the list of servers to try is not in the room. ([\#15074](matrix-org/synapse#15074)) - Fix a bug introduced in Synapse v1.74.0 where searching with colons when using ICU for search term tokenisation would fail with an error. ([\#15079](matrix-org/synapse#15079)) - Reduce the likelihood of a rare race condition where rejoining a restricted room over federation would fail. ([\#15080](matrix-org/synapse#15080)) - Fix a bug introduced in Synapse 1.76 where workers would fail to start if the `health` listener was configured. ([\#15096](matrix-org/synapse#15096)) - Fix a bug introduced in Synapse 1.75 where the [portdb script](https://matrix-org.github.io/synapse/release-v1.78/postgres.html#porting-from-sqlite) would fail to run after a room had been faster-joined. ([\#15108](matrix-org/synapse#15108)) Improved Documentation ---------------------- - Document how to start Synapse with Poetry. Contributed by @thezaidbintariq. ([\#14892](matrix-org/synapse#14892), [\#15022](matrix-org/synapse#15022)) - Update delegation documentation to clarify that SRV DNS delegation does not eliminate all needs to serve files from .well-known locations. Contributed by @williamkray. ([\#14959](matrix-org/synapse#14959)) - Fix a mistake in registration_shared_secret_path docs. ([\#15078](matrix-org/synapse#15078)) - Refer to a more recent blog post on the [Database Maintenance Tools](https://matrix-org.github.io/synapse/latest/usage/administration/database_maintenance_tools.html) page. Contributed by @jahway603. ([\#15083](matrix-org/synapse#15083)) Internal Changes ---------------- - Re-type hint some collections as read-only. ([\#13755](matrix-org/synapse#13755)) - Faster joins: don't stall when another user joins during a partial-state room resync. ([\#14606](matrix-org/synapse#14606)) - Add a class `UnpersistedEventContext` to allow for the batching up of storing state groups. ([\#14675](matrix-org/synapse#14675)) - Add a check to ensure that locked dependencies have source distributions available. ([\#14742](matrix-org/synapse#14742)) - Tweak comment on `_is_local_room_accessible` as part of room visibility in `/hierarchy` to clarify the condition for a room being visible. ([\#14834](matrix-org/synapse#14834)) - Prevent `WARNING: there is already a transaction in progress` lines appearing in PostgreSQL's logs on some occasions. ([\#14840](matrix-org/synapse#14840)) - Use `StrCollection` to avoid potential bugs with `Collection[str]`. ([\#14929](matrix-org/synapse#14929)) - Improve performance of `/sync` in a few situations. ([\#14973](matrix-org/synapse#14973)) - Limit concurrent event creation for a room to avoid state resolution when sending bursts of events to a local room. ([\#14977](matrix-org/synapse#14977)) - Skip calculating unread push actions in /sync when enable_push is false. ([\#14980](matrix-org/synapse#14980)) - Add a schema dump symlinks inside `contrib`, to make it easier for IDEs to interrogate Synapse's database schema. ([\#14982](matrix-org/synapse#14982)) - Improve type hints. ([\#15008](matrix-org/synapse#15008), [\#15026](matrix-org/synapse#15026), [\#15027](matrix-org/synapse#15027), [\#15028](matrix-org/synapse#15028), [\#15031](matrix-org/synapse#15031), [\#15035](matrix-org/synapse#15035), [\#15052](matrix-org/synapse#15052), [\#15072](matrix-org/synapse#15072), [\#15084](matrix-org/synapse#15084)) - Update [MSC3952](matrix-org/matrix-spec-proposals#3952) support based on changes to the MSC. ([\#15037](matrix-org/synapse#15037)) - Avoid mutating a cached value in `get_user_devices_from_cache`. ([\#15040](matrix-org/synapse#15040)) - Fix a rare exception in logs on start up. ([\#15041](matrix-org/synapse#15041)) - Update pyo3-log to v0.8.1. ([\#15043](matrix-org/synapse#15043)) - Avoid mutating cached values in `_generate_sync_entry_for_account_data`. ([\#15047](matrix-org/synapse#15047)) - Refactor arguments of `try_unbind_threepid` and `_try_unbind_threepid_with_id_server` to not use dictionaries. ([\#15053](matrix-org/synapse#15053)) - Merge debug logging from the hotfixes branch. ([\#15054](matrix-org/synapse#15054)) - Faster joins: omit device list updates originating from partial state rooms in /sync responses without lazy loading of members enabled. ([\#15069](matrix-org/synapse#15069)) - Fix clashing database transaction name. ([\#15070](matrix-org/synapse#15070)) - Upper-bound frozendict dependency. This works around us being unable to test installing our wheels against Python 3.11 in CI. ([\#15114](matrix-org/synapse#15114)) - Tweak logging for when a worker waits for its view of a replication stream to catch up. ([\#15120](matrix-org/synapse#15120)) <details><summary>Locked dependency updates</summary> - Bump bleach from 5.0.1 to 6.0.0. ([\#15059](matrix-org/synapse#15059)) - Bump cryptography from 38.0.4 to 39.0.1. ([\#15020](matrix-org/synapse#15020)) - Bump ruff version from 0.0.230 to 0.0.237. ([\#15033](matrix-org/synapse#15033)) - Bump dtolnay/rust-toolchain from 9cd00a88a73addc8617065438eff914dd08d0955 to 25dc93b901a87e864900a8aec6c12e9aa794c0c3. ([\#15060](matrix-org/synapse#15060)) - Bump systemd-python from 234 to 235. ([\#15061](matrix-org/synapse#15061)) - Bump serde_json from 1.0.92 to 1.0.93. ([\#15062](matrix-org/synapse#15062)) - Bump types-requests from 2.28.11.8 to 2.28.11.12. ([\#15063](matrix-org/synapse#15063)) - Bump types-pillow from 9.4.0.5 to 9.4.0.10. ([\#15064](matrix-org/synapse#15064)) - Bump sentry-sdk from 1.13.0 to 1.15.0. ([\#15065](matrix-org/synapse#15065)) - Bump types-jsonschema from 4.17.0.3 to 4.17.0.5. ([\#15099](matrix-org/synapse#15099)) - Bump types-bleach from 5.0.3.1 to 6.0.0.0. ([\#15100](matrix-org/synapse#15100)) - Bump dtolnay/rust-toolchain from 25dc93b901a87e864900a8aec6c12e9aa794c0c3 to e12eda571dc9a5ee5d58eecf4738ec291c66f295. ([\#15101](matrix-org/synapse#15101)) - Bump dawidd6/action-download-artifact from 2.24.3 to 2.25.0. ([\#15102](matrix-org/synapse#15102)) - Bump types-pillow from 9.4.0.10 to 9.4.0.13. ([\#15104](matrix-org/synapse#15104)) - Bump types-setuptools from 67.1.0.0 to 67.3.0.1. ([\#15105](matrix-org/synapse#15105)) </details>
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The admin API doesn't display event reports that don't have an attached event, so there's no point tracking those.
Not aware of a ticket being open that tracks this, but heard about the problem anecdotally.