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Do not allow MSC3440 threads to fork threads #11161

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merged 13 commits into from
Nov 18, 2021
Merged

Do not allow MSC3440 threads to fork threads #11161

merged 13 commits into from
Nov 18, 2021

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@clokep clokep commented Oct 22, 2021 •
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MSC3440 requires that a thread cannot be created against an event which already has a relation.

This has quite a few changes in it:

  • Improves validation for relations in the C-S API.
  • Denies events which attempt to start a thread on a message which already has a relation.

@clokep clokep linked an issue Oct 25, 2021 that may be closed by this pull request
Do not allow forking threads for MSC3440 #11175
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clokep
clokep commented Nov 8, 2021
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clokep commented Nov 8, 2021
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@clokep clokep force-pushed the clokep/thread-relation-2 branch from a750347 to 8e63d56 Compare November 11, 2021 18:09
@clokep clokep marked this pull request as ready for review November 12, 2021 13:53
@clokep clokep requested a review from a team as a code owner November 12, 2021 13:53
@reivilibre reivilibre self-assigned this Nov 16, 2021
reivilibre
reivilibre suggested changes Nov 16, 2021
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Comment on lines 1039 to 1044
else:
# There must be some reason that the client knows the event exists,
# see if there are existing relations. If so, assume everything is fine.
if not await self.store.event_related_to(relates_to):
# Otherwise, the client can't know about the parent event!
raise SynapseError(400, "Can't send relation to unknown event")
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Curious why this would legally get hit?

Is it because you might see a thread where the base message is not visible to you/your homeserver, but the subsequent messages are?

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Is it OK to divulge the fact that a given event ID is valid and known by the server? (this functionality can be used to check if a event is known ('must be in the same room') or unknown ('unknown event') to the homeserver.)
I would imagine we already give it away somewhere, but just thought it was worth asking..

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Is it because you might see a thread where the base message is not visible to you/your homeserver, but the subsequent messages are?

This is the situation that I was thinking of, yes. (The simple case is if you're invited to a room that doesn't share history and you can't see the thread head, but you can see subsequent messages in it).

I think it is OK to divulge in this case that the event ID is valid. Theoretically you would know already since you've seen other events referencing that event.

It could be used to iterate through whether events are in a room, but that seems unreasonable in terms of the space to scan + rate limits, I think.

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Yeah, that seems OK. I don't think we're particularly stringent about this anyway. I can't properly imagine a case where this would hurt us, but that doesn't mean it's not possible (though we probably already divulge this elsewhere)

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@clokep clokep requested a review from reivilibre November 16, 2021 15:41
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clokep commented Nov 16, 2021

@reivilibre I left a couple of comments and pushed some clarifications, let me know what you think!

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Naming is still not entirely to my taste but I'll trust you there — not sure any particular set of words will ever be perfect. All else looks good to me — thanks!

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clokep commented Nov 17, 2021

Naming is still not entirely to my taste but I'll trust you there — not sure any particular set of words will ever be perfect. All else looks good to me — thanks!

Thanks! I'll sleep on it again and see if I can come up with anything. If not I'll merge, as-is.

@clokep clokep enabled auto-merge (squash) November 18, 2021 13:18
@clokep clokep merged commit 4bd54b2 into develop Nov 18, 2021
@clokep clokep deleted the clokep/thread-relation-2 branch November 18, 2021 13:43
babolivier added a commit to matrix-org/synapse-dinsic that referenced this pull request Dec 6, 2021
@babolivier
Merge tag 'v1.48.0' into babolivier/dinsic_1.48.0
996bed0 
Synapse 1.48.0 (2021-11-30)
===========================

This release removes support for the long-deprecated `trust_identity_server_for_password_resets` configuration flag.

This release also fixes some performance issues with some background database updates introduced in Synapse 1.47.0.

No significant changes since 1.48.0rc1.

Synapse 1.48.0rc1 (2021-11-25)
==============================

Features
--------

- Experimental support for the thread relation defined in [MSC3440](matrix-org/matrix-spec-proposals#3440). ([\#11161](matrix-org/synapse#11161))
- Support filtering by relation senders & types per [MSC3440](matrix-org/matrix-spec-proposals#3440). ([\#11236](matrix-org/synapse#11236))
- Add support for the `/_matrix/client/v3` and `/_matrix/media/v3` APIs from Matrix v1.1. ([\#11318](matrix-org/synapse#11318), [\#11371](matrix-org/synapse#11371))
- Support the stable version of [MSC2778](matrix-org/matrix-spec-proposals#2778): the `m.login.application_service` login type. Contributed by @tulir. ([\#11335](matrix-org/synapse#11335))
- Add a new version of delete room admin API `DELETE /_synapse/admin/v2/rooms/<room_id>` to run it in the background. Contributed by @dklimpel. ([\#11223](matrix-org/synapse#11223))
- Allow the admin [Delete Room API](https://matrix-org.github.io/synapse/latest/admin_api/rooms.html#delete-room-api) to block a room without the need to join it. ([\#11228](matrix-org/synapse#11228))
- Add an admin API to un-shadow-ban a user. ([\#11347](matrix-org/synapse#11347))
- Add an admin API to run background database schema updates. ([\#11352](matrix-org/synapse#11352))
- Add an admin API for blocking a room. ([\#11324](matrix-org/synapse#11324))
- Update the JWT login type to support custom a `sub` claim. ([\#11361](matrix-org/synapse#11361))
- Store and allow querying of arbitrary event relations. ([\#11391](matrix-org/synapse#11391))

Bugfixes
--------

- Fix a long-standing bug wherein display names or avatar URLs containing null bytes cause an internal server error when stored in the DB. ([\#11230](matrix-org/synapse#11230))
- Prevent [MSC2716](matrix-org/matrix-spec-proposals#2716) historical state events from being pushed to an application service via `/transactions`. ([\#11265](matrix-org/synapse#11265))
- Fix a long-standing bug where uploading extremely thin images (e.g. 1000x1) would fail. Contributed by @Neeeflix. ([\#11288](matrix-org/synapse#11288))
- Fix a bug, introduced in Synapse 1.46.0, which caused the `check_3pid_auth` and `on_logged_out` callbacks in legacy password authentication provider modules to not be registered. Modules using the generic module interface were not affected. ([\#11340](matrix-org/synapse#11340))
- Fix a bug introduced in 1.41.0 where space hierarchy responses would be incorrectly reused if multiple users were to make the same request at the same time. ([\#11355](matrix-org/synapse#11355))
- Fix a bug introduced in 1.45.0 where the `read_templates` method of the module API would error. ([\#11377](matrix-org/synapse#11377))
- Fix an issue introduced in 1.47.0 which prevented servers re-joining rooms they had previously left, if their signing keys were replaced. ([\#11379](matrix-org/synapse#11379))
- Fix a bug introduced in 1.13.0 where creating and publishing a room could cause errors if `room_list_publication_rules` is configured. ([\#11392](matrix-org/synapse#11392))
- Improve performance of various background database updates. ([\#11421](matrix-org/synapse#11421), [\#11422](matrix-org/synapse#11422))

Improved Documentation
----------------------

- Suggest users of the Debian packages add configuration to `/etc/matrix-synapse/conf.d/` to prevent, upon upgrade, being asked to choose between their configuration and the maintainer's. ([\#11281](matrix-org/synapse#11281))
- Fix typos in the documentation for the `username_available` admin API. Contributed by Stanislav Motylkov. ([\#11286](matrix-org/synapse#11286))
- Add Single Sign-On, SAML and CAS pages to the documentation. ([\#11298](matrix-org/synapse#11298))
- Change the word 'Home server' as one word 'homeserver' in documentation. ([\#11320](matrix-org/synapse#11320))
- Fix missing quotes for wildcard domains in `federation_certificate_verification_whitelist`. ([\#11381](matrix-org/synapse#11381))

Deprecations and Removals
-------------------------

- Remove deprecated `trust_identity_server_for_password_resets` configuration flag. ([\#11333](matrix-org/synapse#11333), [\#11395](matrix-org/synapse#11395))

Internal Changes
----------------

- Add type annotations to `synapse.metrics`. ([\#10847](matrix-org/synapse#10847))
- Split out federated PDU retrieval function into a non-cached version. ([\#11242](matrix-org/synapse#11242))
- Clean up code relating to to-device messages and sending ephemeral events to application services. ([\#11247](matrix-org/synapse#11247))
- Fix a small typo in the error response when a relation type other than 'm.annotation' is passed to `GET /rooms/{room_id}/aggregations/{event_id}`. ([\#11278](matrix-org/synapse#11278))
- Drop unused database tables `room_stats_historical` and `user_stats_historical`. ([\#11280](matrix-org/synapse#11280))
- Require all files in synapse/ and tests/ to pass mypy unless specifically excluded. ([\#11282](matrix-org/synapse#11282), [\#11285](matrix-org/synapse#11285), [\#11359](matrix-org/synapse#11359))
- Add missing type hints to `synapse.app`. ([\#11287](matrix-org/synapse#11287))
- Remove unused parameters on `FederationEventHandler._check_event_auth`. ([\#11292](matrix-org/synapse#11292))
- Add type hints to `synapse._scripts`. ([\#11297](matrix-org/synapse#11297))
- Fix an issue which prevented the `remove_deleted_devices_from_device_inbox` background database schema update from running when updating from a recent Synapse version. ([\#11303](matrix-org/synapse#11303))
- Add type hints to storage classes. ([\#11307](matrix-org/synapse#11307), [\#11310](matrix-org/synapse#11310), [\#11311](matrix-org/synapse#11311), [\#11312](matrix-org/synapse#11312), [\#11313](matrix-org/synapse#11313), [\#11314](matrix-org/synapse#11314), [\#11316](matrix-org/synapse#11316), [\#11322](matrix-org/synapse#11322), [\#11332](matrix-org/synapse#11332), [\#11339](matrix-org/synapse#11339), [\#11342](matrix-org/synapse#11342))
- Add type hints to `synapse.util`. ([\#11321](matrix-org/synapse#11321), [\#11328](matrix-org/synapse#11328))
- Improve type annotations in Synapse's test suite. ([\#11323](matrix-org/synapse#11323), [\#11330](matrix-org/synapse#11330))
- Test that room alias deletion works as intended. ([\#11327](matrix-org/synapse#11327))
- Add type annotations for some methods and properties in the module API. ([\#11341](matrix-org/synapse#11341))
- Fix running `scripts-dev/complement.sh`, which was broken in v1.47.0rc1. ([\#11368](matrix-org/synapse#11368))
- Rename internal functions for token generation to better reflect what they do. ([\#11369](matrix-org/synapse#11369), [\#11370](matrix-org/synapse#11370))
- Add type hints to configuration classes. ([\#11377](matrix-org/synapse#11377))
- Publish a `develop` image to Docker Hub. ([\#11380](matrix-org/synapse#11380))
- Keep fallback key marked as used if it's re-uploaded. ([\#11382](matrix-org/synapse#11382))
- Use `auto_attribs` on the `attrs` class `RefreshTokenLookupResult`. ([\#11386](matrix-org/synapse#11386))
- Rename unstable `access_token_lifetime` configuration option to `refreshable_access_token_lifetime` to make it clear it only concerns refreshable access tokens. ([\#11388](matrix-org/synapse#11388))
- Do not run the broken MSC2716 tests when running `scripts-dev/complement.sh`. ([\#11389](matrix-org/synapse#11389))
- Remove dead code from supporting ACME. ([\#11393](matrix-org/synapse#11393))
- Refactor including the bundled relations when serializing an event. ([\#11408](matrix-org/synapse#11408))
netbsd-srcmastr pushed a commit to NetBSD/pkgsrc that referenced this pull request Dec 9, 2021
chat/matrix-synapse: Update to 1.48.0
d30d214 
Synapse 1.48.0 (2021-11-30)
===========================

This release removes support for the long-deprecated `trust_identity_server_for_password_resets` configuration flag.

This release also fixes some performance issues with some background database updates introduced in Synapse 1.47.0.

Features
--------

- Experimental support for the thread relation defined in [MSC3440](matrix-org/matrix-spec-proposals#3440). ([\#11161](matrix-org/synapse#11161))
- Support filtering by relation senders & types per [MSC3440](matrix-org/matrix-spec-proposals#3440). ([\#11236](matrix-org/synapse#11236))
- Add support for the `/_matrix/client/v3` and `/_matrix/media/v3` APIs from Matrix v1.1. ([\#11318](matrix-org/synapse#11318), [\#11371](matrix-org/synapse#11371))
- Support the stable version of [MSC2778](matrix-org/matrix-spec-proposals#2778): the `m.login.application_service` login type. Contributed by @tulir. ([\#11335](matrix-org/synapse#11335))
- Add a new version of delete room admin API `DELETE /_synapse/admin/v2/rooms/<room_id>` to run it in the background. Contributed by @dklimpel. ([\#11223](matrix-org/synapse#11223))
- Allow the admin [Delete Room API](https://matrix-org.github.io/synapse/latest/admin_api/rooms.html#delete-room-api) to block a room without the need to join it. ([\#11228](matrix-org/synapse#11228))
- Add an admin API to un-shadow-ban a user. ([\#11347](matrix-org/synapse#11347))
- Add an admin API to run background database schema updates. ([\#11352](matrix-org/synapse#11352))
- Add an admin API for blocking a room. ([\#11324](matrix-org/synapse#11324))
- Update the JWT login type to support custom a `sub` claim. ([\#11361](matrix-org/synapse#11361))
- Store and allow querying of arbitrary event relations. ([\#11391](matrix-org/synapse#11391))

Deprecations and Removals
-------------------------

- Remove deprecated `trust_identity_server_for_password_resets` configuration flag. ([\#11333](matrix-org/synapse#11333), [\#11395](matrix-org/synapse#11395))
Fizzadar added a commit to Fizzadar/synapse that referenced this pull request Jan 5, 2022
@Fizzadar
Merge tag 'v1.48.0' into beeper-master
d0596f1 
Synapse 1.48.0 (2021-11-30)
===========================

This release removes support for the long-deprecated `trust_identity_server_for_password_resets` configuration flag.

This release also fixes some performance issues with some background database updates introduced in Synapse 1.47.0.

No significant changes since 1.48.0rc1.

Synapse 1.48.0rc1 (2021-11-25)
==============================

Features
--------

- Experimental support for the thread relation defined in [MSC3440](matrix-org/matrix-spec-proposals#3440). ([\matrix-org#11161](matrix-org#11161))
- Support filtering by relation senders & types per [MSC3440](matrix-org/matrix-spec-proposals#3440). ([\matrix-org#11236](matrix-org#11236))
- Add support for the `/_matrix/client/v3` and `/_matrix/media/v3` APIs from Matrix v1.1. ([\matrix-org#11318](matrix-org#11318), [\matrix-org#11371](matrix-org#11371))
- Support the stable version of [MSC2778](matrix-org/matrix-spec-proposals#2778): the `m.login.application_service` login type. Contributed by @tulir. ([\matrix-org#11335](matrix-org#11335))
- Add a new version of delete room admin API `DELETE /_synapse/admin/v2/rooms/<room_id>` to run it in the background. Contributed by @dklimpel. ([\matrix-org#11223](matrix-org#11223))
- Allow the admin [Delete Room API](https://matrix-org.github.io/synapse/latest/admin_api/rooms.html#delete-room-api) to block a room without the need to join it. ([\matrix-org#11228](matrix-org#11228))
- Add an admin API to un-shadow-ban a user. ([\matrix-org#11347](matrix-org#11347))
- Add an admin API to run background database schema updates. ([\matrix-org#11352](matrix-org#11352))
- Add an admin API for blocking a room. ([\matrix-org#11324](matrix-org#11324))
- Update the JWT login type to support custom a `sub` claim. ([\matrix-org#11361](matrix-org#11361))
- Store and allow querying of arbitrary event relations. ([\matrix-org#11391](matrix-org#11391))

Bugfixes
--------

- Fix a long-standing bug wherein display names or avatar URLs containing null bytes cause an internal server error when stored in the DB. ([\matrix-org#11230](matrix-org#11230))
- Prevent [MSC2716](matrix-org/matrix-spec-proposals#2716) historical state events from being pushed to an application service via `/transactions`. ([\matrix-org#11265](matrix-org#11265))
- Fix a long-standing bug where uploading extremely thin images (e.g. 1000x1) would fail. Contributed by @Neeeflix. ([\matrix-org#11288](matrix-org#11288))
- Fix a bug, introduced in Synapse 1.46.0, which caused the `check_3pid_auth` and `on_logged_out` callbacks in legacy password authentication provider modules to not be registered. Modules using the generic module interface were not affected. ([\matrix-org#11340](matrix-org#11340))
- Fix a bug introduced in 1.41.0 where space hierarchy responses would be incorrectly reused if multiple users were to make the same request at the same time. ([\matrix-org#11355](matrix-org#11355))
- Fix a bug introduced in 1.45.0 where the `read_templates` method of the module API would error. ([\matrix-org#11377](matrix-org#11377))
- Fix an issue introduced in 1.47.0 which prevented servers re-joining rooms they had previously left, if their signing keys were replaced. ([\matrix-org#11379](matrix-org#11379))
- Fix a bug introduced in 1.13.0 where creating and publishing a room could cause errors if `room_list_publication_rules` is configured. ([\matrix-org#11392](matrix-org#11392))
- Improve performance of various background database updates. ([\matrix-org#11421](matrix-org#11421), [\matrix-org#11422](matrix-org#11422))

Improved Documentation
----------------------

- Suggest users of the Debian packages add configuration to `/etc/matrix-synapse/conf.d/` to prevent, upon upgrade, being asked to choose between their configuration and the maintainer's. ([\matrix-org#11281](matrix-org#11281))
- Fix typos in the documentation for the `username_available` admin API. Contributed by Stanislav Motylkov. ([\matrix-org#11286](matrix-org#11286))
- Add Single Sign-On, SAML and CAS pages to the documentation. ([\matrix-org#11298](matrix-org#11298))
- Change the word 'Home server' as one word 'homeserver' in documentation. ([\matrix-org#11320](matrix-org#11320))
- Fix missing quotes for wildcard domains in `federation_certificate_verification_whitelist`. ([\matrix-org#11381](matrix-org#11381))

Deprecations and Removals
-------------------------

- Remove deprecated `trust_identity_server_for_password_resets` configuration flag. ([\matrix-org#11333](matrix-org#11333), [\matrix-org#11395](matrix-org#11395))

Internal Changes
----------------

- Add type annotations to `synapse.metrics`. ([\matrix-org#10847](matrix-org#10847))
- Split out federated PDU retrieval function into a non-cached version. ([\matrix-org#11242](matrix-org#11242))
- Clean up code relating to to-device messages and sending ephemeral events to application services. ([\matrix-org#11247](matrix-org#11247))
- Fix a small typo in the error response when a relation type other than 'm.annotation' is passed to `GET /rooms/{room_id}/aggregations/{event_id}`. ([\matrix-org#11278](matrix-org#11278))
- Drop unused database tables `room_stats_historical` and `user_stats_historical`. ([\matrix-org#11280](matrix-org#11280))
- Require all files in synapse/ and tests/ to pass mypy unless specifically excluded. ([\matrix-org#11282](matrix-org#11282), [\matrix-org#11285](matrix-org#11285), [\matrix-org#11359](matrix-org#11359))
- Add missing type hints to `synapse.app`. ([\matrix-org#11287](matrix-org#11287))
- Remove unused parameters on `FederationEventHandler._check_event_auth`. ([\matrix-org#11292](matrix-org#11292))
- Add type hints to `synapse._scripts`. ([\matrix-org#11297](matrix-org#11297))
- Fix an issue which prevented the `remove_deleted_devices_from_device_inbox` background database schema update from running when updating from a recent Synapse version. ([\matrix-org#11303](matrix-org#11303))
- Add type hints to storage classes. ([\matrix-org#11307](matrix-org#11307), [\matrix-org#11310](matrix-org#11310), [\matrix-org#11311](matrix-org#11311), [\matrix-org#11312](matrix-org#11312), [\matrix-org#11313](matrix-org#11313), [\matrix-org#11314](matrix-org#11314), [\matrix-org#11316](matrix-org#11316), [\matrix-org#11322](matrix-org#11322), [\matrix-org#11332](matrix-org#11332), [\matrix-org#11339](matrix-org#11339), [\matrix-org#11342](matrix-org#11342))
- Add type hints to `synapse.util`. ([\matrix-org#11321](matrix-org#11321), [\matrix-org#11328](matrix-org#11328))
- Improve type annotations in Synapse's test suite. ([\matrix-org#11323](matrix-org#11323), [\matrix-org#11330](matrix-org#11330))
- Test that room alias deletion works as intended. ([\matrix-org#11327](matrix-org#11327))
- Add type annotations for some methods and properties in the module API. ([\matrix-org#11341](matrix-org#11341))
- Fix running `scripts-dev/complement.sh`, which was broken in v1.47.0rc1. ([\matrix-org#11368](matrix-org#11368))
- Rename internal functions for token generation to better reflect what they do. ([\matrix-org#11369](matrix-org#11369), [\matrix-org#11370](matrix-org#11370))
- Add type hints to configuration classes. ([\matrix-org#11377](matrix-org#11377))
- Publish a `develop` image to Docker Hub. ([\matrix-org#11380](matrix-org#11380))
- Keep fallback key marked as used if it's re-uploaded. ([\matrix-org#11382](matrix-org#11382))
- Use `auto_attribs` on the `attrs` class `RefreshTokenLookupResult`. ([\matrix-org#11386](matrix-org#11386))
- Rename unstable `access_token_lifetime` configuration option to `refreshable_access_token_lifetime` to make it clear it only concerns refreshable access tokens. ([\matrix-org#11388](matrix-org#11388))
- Do not run the broken MSC2716 tests when running `scripts-dev/complement.sh`. ([\matrix-org#11389](matrix-org#11389))
- Remove dead code from supporting ACME. ([\matrix-org#11393](matrix-org#11393))
- Refactor including the bundled relations when serializing an event. ([\matrix-org#11408](matrix-org#11408))
@clokep clokep mentioned this pull request Nov 19, 2021
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@richvdh richvdh mentioned this pull request Oct 13, 2022
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Do not allow forking threads for MSC3440
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@clokep @reivilibre