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Implement MSC4028: push all encrypted events. #16361

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merged 3 commits into from
Sep 26, 2023
Merged

Implement MSC4028: push all encrypted events. #16361

merged 3 commits into from
Sep 26, 2023

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clokep
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@clokep clokep commented Sep 21, 2023

See MSC4028.

Fixes #15847

@clokep clokep marked this pull request as ready for review September 22, 2023 14:19
@clokep clokep requested a review from a team as a code owner September 22, 2023 14:19
DMRobertson
DMRobertson reviewed Sep 25, 2023
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My gut reaction is that pushing all encrypted events to clients sounds excessive and might mean the push gateway gets rate limited. But I have no actual data on that. Maybe this is what a mobile app with E2EE messaging has to do? (Are there any open source services like this (Signal?) we could compare to?)

Does this only do push-gateway push, or does it also mean that we'll send out emails to people with email notifications turned on every time they get an encrypted message?

Also: is it worth a test case for the new push rule? (Not sure if we test them individually?)

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clokep commented Sep 26, 2023

My gut reaction is that pushing all encrypted events to clients sounds excessive and might mean the push gateway gets rate limited. But I have no actual data on that. Maybe this is what a mobile app with E2EE messaging has to do? (Are there any open source services like this (Signal?) we could compare to?)

This sounds like feedback for the MSC, not the implementation.

Does this only do push-gateway push, or does it also mean that we'll send out emails to people with email notifications turned on every time they get an encrypted message?

Hmm, I think this means we would end up sending emails too, which is not ideal. Again this might be good feedback for the MSC?

Also: is it worth a test case for the new push rule? (Not sure if we test them individually?)

We don't usually test each base rule individually, but I can add one if you'd like. (Especially for really simple ones I'm unconvinced it is very useful TBH.)

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We don't usually test each base rule individually, but I can add one if you'd like. (Especially for really simple ones I'm unconvinced it is very useful TBH.)

That's fair---just wanted to sanity check what the done thing here was.

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clokep commented Sep 26, 2023

I can move the feedback over to the MSC if you'd like.

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I can move the feedback over to the MSC if you'd like.

Ahh, I left a minimum-effort block comment on the MSC just now.

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DMRobertson approved these changes Sep 26, 2023
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Happy that this implements the MSC.

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clokep commented Sep 26, 2023

Happy that this implements the MSC.

I'm going to merge this for now, it is disabled by default so this shouldn't cause issues and we can take the concerns to the MSC?

@clokep clokep merged commit 17800a0 into develop Sep 26, 2023
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@clokep clokep deleted the clokep/push-enc branch September 26, 2023 15:52
Fizzadar added a commit to beeper/synapse-legacy-fork that referenced this pull request Oct 30, 2023
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Merge tag 'v1.94.0' into merge-1.94
97fe6f8 
No significant changes since 1.94.0rc1.

- Render plain, CSS, CSV, JSON and common image formats in the browser (inline) when requested through the /download endpoint. ([\matrix-org#15988](matrix-org#15988))
- Add experimental support for [MSC4028](matrix-org/matrix-spec-proposals#4028) to push all encrypted events to clients. ([\matrix-org#16361](matrix-org#16361))
- Minor performance improvement when sending presence to federated servers. ([\matrix-org#16385](matrix-org#16385))
- Minor performance improvement by caching server ACL checking. ([\matrix-org#16360](matrix-org#16360))

- Add developer documentation concerning gradual schema migrations with column alterations. ([\matrix-org#15691](matrix-org#15691))
- Improve documentation of the user directory search algorithm. ([\matrix-org#16320](matrix-org#16320))
- Fix rendering of user admin API documentation around deactivation. This was broken in Synapse 1.91.0. ([\matrix-org#16355](matrix-org#16355))
- Update documentation around message retention policies. ([\matrix-org#16382](matrix-org#16382))
- Add note to `federation_domain_whitelist` config option to clarify its usage. ([\matrix-org#16416](matrix-org#16416))
- Improve legacy release notes. ([\matrix-org#16418](matrix-org#16418))

- Remove Python version from `/_synapse/admin/v1/server_version`. ([\matrix-org#16380](matrix-org#16380))

- Avoid running CI steps when the files they check have not been changed. ([\matrix-org#14745](matrix-org#14745), [\matrix-org#16387](matrix-org#16387))
- Improve type hints. ([\matrix-org#14911](matrix-org#14911), [\matrix-org#16350](matrix-org#16350), [\matrix-org#16356](matrix-org#16356), [\matrix-org#16395](matrix-org#16395))
- Added support for pydantic v2 in addition to pydantic v1. Contributed by Maxwell G (@gotmax23). ([\matrix-org#16332](matrix-org#16332))
- Get CI to check PRs have been signed-off. ([\matrix-org#16348](matrix-org#16348))
- Add missing licence header. ([\matrix-org#16359](matrix-org#16359))
- Improve type hints, and bump types-psycopg2 from 2.9.21.11 to 2.9.21.14. ([\matrix-org#16381](matrix-org#16381))
- Improve comments in `StateGroupBackgroundUpdateStore`. ([\matrix-org#16383](matrix-org#16383))
- Update maturin configuration. ([\matrix-org#16394](matrix-org#16394))
- Downgrade replication stream time out error log lines to warning. ([\matrix-org#16401](matrix-org#16401))

* Bump actions/checkout from 3 to 4. ([\matrix-org#16250](matrix-org#16250))
* Bump cryptography from 41.0.3 to 41.0.4. ([\matrix-org#16362](matrix-org#16362))
* Bump dawidd6/action-download-artifact from 2.27.0 to 2.28.0. ([\matrix-org#16374](matrix-org#16374))
* Bump docker/setup-buildx-action from 2 to 3. ([\matrix-org#16375](matrix-org#16375))
* Bump gitpython from 3.1.35 to 3.1.37. ([\matrix-org#16376](matrix-org#16376))
* Bump msgpack from 1.0.5 to 1.0.6. ([\matrix-org#16377](matrix-org#16377))
* Bump msgpack from 1.0.6 to 1.0.7. ([\matrix-org#16412](matrix-org#16412))
* Bump phonenumbers from 8.13.19 to 8.13.22. ([\matrix-org#16413](matrix-org#16413))
* Bump psycopg2 from 2.9.7 to 2.9.8. ([\matrix-org#16409](matrix-org#16409))
* Bump pydantic from 2.3.0 to 2.4.2. ([\matrix-org#16410](matrix-org#16410))
* Bump regex from 1.9.5 to 1.9.6. ([\matrix-org#16408](matrix-org#16408))
* Bump sentry-sdk from 1.30.0 to 1.31.0. ([\matrix-org#16378](matrix-org#16378))
* Bump types-netaddr from 0.8.0.9 to 0.9.0.1. ([\matrix-org#16411](matrix-org#16411))
* Bump types-psycopg2 from 2.9.21.11 to 2.9.21.14. ([\matrix-org#16381](matrix-org#16381))
* Bump urllib3 from 1.26.15 to 1.26.17. ([\matrix-org#16422](matrix-org#16422))

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# gpg: Signature made Tue Oct 10 11:01:00 2023 BST
# gpg:                using RSA key F124520CEEE062448FE1C8442D2EFA2F32FBE047
# gpg: Can't check signature: No public key

# Conflicts:
#	.github/workflows/docker.yml
#	.github/workflows/docs-pr-netlify.yaml
#	.github/workflows/docs-pr.yaml
#	.github/workflows/docs.yaml
#	.github/workflows/latest_deps.yml
#	.github/workflows/poetry_lockfile.yaml
#	.github/workflows/push_complement_image.yml
#	.github/workflows/release-artifacts.yml
#	.github/workflows/tests.yml
#	.github/workflows/twisted_trunk.yml
#	poetry.lock
#	rust/src/push/base_rules.rs
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Support MSC4028 (Push all encrypted events except for muted rooms)
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@clokep @DMRobertson