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Clean up federation event auth code #10539

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@richvdh richvdh commented Aug 5, 2021

This is part of my work trying to sort out #9595. As a first step, this should be an (almost) non-functional change to try to make these code paths a little more understandable.

Reviewable commit by commit.

pretty sure we don't need this any more.
It doesn't look like the supplied context is ever modified.
This is only called in three places. Two of them don't pass `auth_events`, and
the third doesn't use the dict after passing it in, so this should be non-functional.
`_check_event_auth` is only called in three places. `on_send_membership_event`
doesn't pass an `auth_events`, and `prep` and `_auth_and_persist_event` do not
use the map after passing it in.
Return the updated auth event dict, rather than modifying the parameter.

This is only called from `_check_event_auth`.
@richvdh richvdh force-pushed the rav/unpick_update_auth_events_and_context_for_auth/1 branch from 5f2689a to 16691a7 Compare August 5, 2021 08:58
Rename `auth_events` parameter to better reflect what it contains.
@richvdh richvdh force-pushed the rav/unpick_update_auth_events_and_context_for_auth/1 branch from 16691a7 to 26d8b19 Compare August 5, 2021 09:00
rename `auth_events` parameter to better describe what it contains
@richvdh richvdh force-pushed the rav/unpick_update_auth_events_and_context_for_auth/1 branch from 26d8b19 to b45fcfc Compare August 5, 2021 09:34
@richvdh richvdh requested a review from a team August 5, 2021 18:04
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Otherwise LGTM!

event.prev_event_ids()[0], allow_none=True
)
if c and c.type == EventTypes.Create:
auth_events[(c.type, c.state_key)] = c
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What's the reasoning for not needing this anymore? Such old rooms may still be floating around? Possibly an alternative is to only do this for v1 rooms?

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This workaround was added in 858e87a, from which I infer it was fixed before then. This is only a week after ae9c2ab, which we know was a critical security fix. I'm pretty sure we previously checked that there weren't any remaining rooms affected by the SYN-149 bug, but if there are any other rooms that predate that fix... I don't think I want to join them.

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Hmm, OK fair

@richvdh richvdh merged commit 1bebc0b into develop Aug 6, 2021
@richvdh richvdh deleted the rav/unpick_update_auth_events_and_context_for_auth/1 branch August 6, 2021 12:54
richvdh added a commit that referenced this pull request Aug 24, 2021
Synapse 1.41.0rc1 (2021-08-18)
==============================

Features
--------

- Add `get_userinfo_by_id` method to ModuleApi. ([\#9581](#9581))
- Initial local support for [MSC3266](#10394), Room Summary over the unstable `/rooms/{roomIdOrAlias}/summary` API. ([\#10394](#10394))
- Experimental support for [MSC3288](matrix-org/matrix-spec-proposals#3288), sending `room_type` to the identity server for 3pid invites over the `/store-invite` API. ([\#10435](#10435))
- Add support for sending federation requests through a proxy. Contributed by @Bubu and @dklimpel. ([\#10475](#10475))
- Add support for "marker" events which makes historical events discoverable for servers that already have all of the scrollback history (part of [MSC2716](matrix-org/matrix-spec-proposals#2716)). ([\#10498](#10498))
- Add a configuration setting for the time a `/sync` response is cached for. ([\#10513](#10513))
- The default logging handler for new installations is now `PeriodicallyFlushingMemoryHandler`, a buffered logging handler which periodically flushes itself. ([\#10518](#10518))
- Add support for new redaction rules for historical events specified in [MSC2716](matrix-org/matrix-spec-proposals#2716). ([\#10538](#10538))
- Add a setting to disable TLS when sending email. ([\#10546](#10546))
- Add pagination to the spaces summary based on updates to [MSC2946](matrix-org/matrix-spec-proposals#2946). ([\#10549](#10549), [\#10560](#10560), [\#10569](#10569), [\#10574](#10574), [\#10575](#10575), [\#10579](#10579), [\#10583](#10583))
- Admin API to delete several media for a specific user. Contributed by @dklimpel. ([\#10558](#10558), [\#10628](#10628))
- Add support for routing `/createRoom` to workers. ([\#10564](#10564))
- Update the Synapse Grafana dashboard. ([\#10570](#10570))
- Add an admin API (`GET /_synapse/admin/username_available`) to check if a username is available (regardless of registration settings). ([\#10578](#10578))
- Allow editing a user's `external_ids` via the "Edit User" admin API. Contributed by @dklimpel. ([\#10598](#10598))
- The Synapse manhole no longer needs coroutines to be wrapped in `defer.ensureDeferred`. ([\#10602](#10602))
- Add option to allow modules to run periodic tasks on all instances, rather than just the one configured to run background tasks. ([\#10638](#10638))

Bugfixes
--------

- Add some clarification to the sample config file. Contributed by @Kentokamoto. ([\#10129](#10129))
- Fix a long-standing bug where protocols which are not implemented by any appservices were incorrectly returned via `GET /_matrix/client/r0/thirdparty/protocols`. ([\#10532](#10532))
- Fix exceptions in logs when failing to get remote room list. ([\#10541](#10541))
- Fix longstanding bug which caused the user "status" to be reset when the user went offline. Contributed by @dklimpel. ([\#10550](#10550))
- Allow public rooms to be previewed in the spaces summary APIs from [MSC2946](matrix-org/matrix-spec-proposals#2946). ([\#10580](#10580))
- Fix a bug introduced in v1.37.1 where an error could occur in the asynchronous processing of PDUs when the queue was empty. ([\#10592](#10592))
- Fix errors on /sync when read receipt data is a string. Only affects homeservers with the experimental flag for [MSC2285](matrix-org/matrix-spec-proposals#2285) enabled. Contributed by @SimonBrandner. ([\#10606](#10606))
- Additional validation for the spaces summary API to avoid errors like `ValueError: Stop argument for islice() must be None or an integer`. The missing validation has existed since v1.31.0. ([\#10611](#10611))
- Revert behaviour introduced in v1.38.0 that strips `org.matrix.msc2732.device_unused_fallback_key_types` from `/sync` when its value is empty. This field should instead always be present according to [MSC2732](https://github.com/matrix-org/matrix-doc/blob/master/proposals/2732-olm-fallback-keys.md). ([\#10623](#10623))

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

- Add documentation for configuration a forward proxy. ([\#10443](#10443))
- Updated the reverse proxy documentation to highlight the homserver configuration that is needed to make Synapse aware that is is intentionally reverse proxied. ([\#10551](#10551))
- Update CONTRIBUTING.md to fix index links and the instructions for SyTest in docker. ([\#10599](#10599))

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

- No longer build `.deb` packages for Ubuntu 20.10 LTS Groovy Gorilla, which has now EOLed. ([\#10588](#10588))
- The `template_dir` configuration settings in the `sso`, `account_validity` and `email` sections of the configuration file are now deprecated in favour of the global `templates.custom_template_directory` setting. See the [upgrade notes](https://matrix-org.github.io/synapse/latest/upgrade.html) for more information. ([\#10596](#10596))

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

- Improve event caching mechanism to avoid having multiple copies of an event in memory at a time. ([\#10119](#10119))
- Reduce errors in PostgreSQL logs due to concurrent serialization errors. ([\#10504](#10504))
- Include room ID in ignored EDU log messages. Contributed by @ilmari. ([\#10507](#10507))
- Add pagination to the spaces summary based on updates to [MSC2946](matrix-org/matrix-spec-proposals#2946). ([\#10527](#10527), [\#10530](#10530))
- Fix CI to not break when run against branches rather than pull requests. ([\#10529](#10529))
- Mark all events stemming from the [MSC2716](matrix-org/matrix-spec-proposals#2716) `/batch_send` endpoint as historical. ([\#10537](#10537))
- Clean up some of the federation event authentication code for clarity. ([\#10539](#10539), [\#10591](#10591))
- Convert `Transaction` and `Edu` objects to attrs. ([\#10542](#10542))
- Update `/batch_send` endpoint to only return `state_events` created by the `state_events_from_before` passed in. ([\#10552](#10552))
- Update contributing.md to warn against rebasing an open PR. ([\#10563](#10563))
- Remove the unused public rooms replication stream. ([\#10565](#10565))
- Clarify error message when failing to join a restricted room. ([\#10572](#10572))
- Remove references to BuildKite in favour of GitHub Actions. ([\#10573](#10573))
- Move `/batch_send` endpoint defined by [MSC2716](matrix-org/matrix-spec-proposals#2716) to the `/v2_alpha` directory. ([\#10576](#10576))
- Allow multiple custom directories in `read_templates`. ([\#10587](#10587))
- Re-organize the `synapse.federation.transport.server` module to create smaller files. ([\#10590](#10590))
- Flatten the `synapse.rest.client` package by moving the contents of `v1` and `v2_alpha` into the parent. ([\#10600](#10600))
- Build Debian packages for Debian 12 (Bookworm). ([\#10612](#10612))
- Fix up a couple of links to the database schema documentation. ([\#10620](#10620))
- Fix a broken link to the upgrade notes. ([\#10631](#10631))
aaronraimist added a commit to aaronraimist/synapse that referenced this pull request Aug 31, 2021
Synapse 1.41.0 (2021-08-24)
===========================

This release adds support for Debian 12 (Bookworm), but **removes support for Ubuntu 20.10 (Groovy Gorilla)**, which reached End of Life last month.

Note that when using workers the `/_synapse/admin/v1/users/{userId}/media` must now be handled by media workers. See the [upgrade notes](https://matrix-org.github.io/synapse/latest/upgrade.html) for more information.

Features
--------

- Enable room capabilities ([MSC3244](matrix-org/matrix-spec-proposals#3244)) by default and set room version 8 as the preferred room version when creating restricted rooms. ([\matrix-org#10571](matrix-org#10571))

Synapse 1.41.0rc1 (2021-08-18)
==============================

Features
--------

- Add `get_userinfo_by_id` method to ModuleApi. ([\matrix-org#9581](matrix-org#9581))
- Initial local support for [MSC3266](matrix-org#10394), Room Summary over the unstable `/rooms/{roomIdOrAlias}/summary` API. ([\matrix-org#10394](matrix-org#10394))
- Experimental support for [MSC3288](matrix-org/matrix-spec-proposals#3288), sending `room_type` to the identity server for 3pid invites over the `/store-invite` API. ([\matrix-org#10435](matrix-org#10435))
- Add support for sending federation requests through a proxy. Contributed by @Bubu and @dklimpel. See the [upgrade notes](https://matrix-org.github.io/synapse/latest/upgrade.html) for more information. ([\matrix-org#10596](matrix-org#10596)). ([\matrix-org#10475](matrix-org#10475))
- Add support for "marker" events which makes historical events discoverable for servers that already have all of the scrollback history (part of [MSC2716](matrix-org/matrix-spec-proposals#2716)). ([\matrix-org#10498](matrix-org#10498))
- Add a configuration setting for the time a `/sync` response is cached for. ([\matrix-org#10513](matrix-org#10513))
- The default logging handler for new installations is now `PeriodicallyFlushingMemoryHandler`, a buffered logging handler which periodically flushes itself. ([\matrix-org#10518](matrix-org#10518))
- Add support for new redaction rules for historical events specified in [MSC2716](matrix-org/matrix-spec-proposals#2716). ([\matrix-org#10538](matrix-org#10538))
- Add a setting to disable TLS when sending email. ([\matrix-org#10546](matrix-org#10546))
- Add pagination to the spaces summary based on updates to [MSC2946](matrix-org/matrix-spec-proposals#2946). ([\matrix-org#10549](matrix-org#10549), [\matrix-org#10560](matrix-org#10560), [\matrix-org#10569](matrix-org#10569), [\matrix-org#10574](matrix-org#10574), [\matrix-org#10575](matrix-org#10575), [\matrix-org#10579](matrix-org#10579), [\matrix-org#10583](matrix-org#10583))
- Admin API to delete several media for a specific user. Contributed by @dklimpel. ([\matrix-org#10558](matrix-org#10558), [\matrix-org#10628](matrix-org#10628))
- Add support for routing `/createRoom` to workers. ([\matrix-org#10564](matrix-org#10564))
- Update the Synapse Grafana dashboard. ([\matrix-org#10570](matrix-org#10570))
- Add an admin API (`GET /_synapse/admin/username_available`) to check if a username is available (regardless of registration settings). ([\matrix-org#10578](matrix-org#10578))
- Allow editing a user's `external_ids` via the "Edit User" admin API. Contributed by @dklimpel. ([\matrix-org#10598](matrix-org#10598))
- The Synapse manhole no longer needs coroutines to be wrapped in `defer.ensureDeferred`. ([\matrix-org#10602](matrix-org#10602))
- Add option to allow modules to run periodic tasks on all instances, rather than just the one configured to run background tasks. ([\matrix-org#10638](matrix-org#10638))

Bugfixes
--------

- Add some clarification to the sample config file. Contributed by @Kentokamoto. ([\matrix-org#10129](matrix-org#10129))
- Fix a long-standing bug where protocols which are not implemented by any appservices were incorrectly returned via `GET /_matrix/client/r0/thirdparty/protocols`. ([\matrix-org#10532](matrix-org#10532))
- Fix exceptions in logs when failing to get remote room list. ([\matrix-org#10541](matrix-org#10541))
- Fix longstanding bug which caused the user's presence "status message" to be reset when the user went offline. Contributed by @dklimpel. ([\matrix-org#10550](matrix-org#10550))
- Allow public rooms to be previewed in the spaces summary APIs from [MSC2946](matrix-org/matrix-spec-proposals#2946). ([\matrix-org#10580](matrix-org#10580))
- Fix a bug introduced in v1.37.1 where an error could occur in the asynchronous processing of PDUs when the queue was empty. ([\matrix-org#10592](matrix-org#10592))
- Fix errors on /sync when read receipt data is a string. Only affects homeservers with the experimental flag for [MSC2285](matrix-org/matrix-spec-proposals#2285) enabled. Contributed by @SimonBrandner. ([\matrix-org#10606](matrix-org#10606))
- Additional validation for the spaces summary API to avoid errors like `ValueError: Stop argument for islice() must be None or an integer`. The missing validation has existed since v1.31.0. ([\matrix-org#10611](matrix-org#10611))
- Revert behaviour introduced in v1.38.0 that strips `org.matrix.msc2732.device_unused_fallback_key_types` from `/sync` when its value is empty. This field should instead always be present according to [MSC2732](https://github.com/matrix-org/matrix-doc/blob/master/proposals/2732-olm-fallback-keys.md). ([\matrix-org#10623](matrix-org#10623))

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

- Add documentation for configuring a forward proxy. ([\matrix-org#10443](matrix-org#10443))
- Updated the reverse proxy documentation to highlight the homserver configuration that is needed to make Synapse aware that is is intentionally reverse proxied. ([\matrix-org#10551](matrix-org#10551))
- Update CONTRIBUTING.md to fix index links and the instructions for SyTest in docker. ([\matrix-org#10599](matrix-org#10599))

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

- No longer build `.deb` packages for Ubuntu 20.10 Groovy Gorilla, which has now EOLed. ([\matrix-org#10588](matrix-org#10588))
- The `template_dir` configuration settings in the `sso`, `account_validity` and `email` sections of the configuration file are now deprecated in favour of the global `templates.custom_template_directory` setting. See the [upgrade notes](https://matrix-org.github.io/synapse/latest/upgrade.html) for more information. ([\matrix-org#10596](matrix-org#10596))

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

- Improve event caching mechanism to avoid having multiple copies of an event in memory at a time. ([\matrix-org#10119](matrix-org#10119))
- Reduce errors in PostgreSQL logs due to concurrent serialization errors. ([\matrix-org#10504](matrix-org#10504))
- Include room ID in ignored EDU log messages. Contributed by @ilmari. ([\matrix-org#10507](matrix-org#10507))
- Add pagination to the spaces summary based on updates to [MSC2946](matrix-org/matrix-spec-proposals#2946). ([\matrix-org#10527](matrix-org#10527), [\matrix-org#10530](matrix-org#10530))
- Fix CI to not break when run against branches rather than pull requests. ([\matrix-org#10529](matrix-org#10529))
- Mark all events stemming from the [MSC2716](matrix-org/matrix-spec-proposals#2716) `/batch_send` endpoint as historical. ([\matrix-org#10537](matrix-org#10537))
- Clean up some of the federation event authentication code for clarity. ([\matrix-org#10539](matrix-org#10539), [\matrix-org#10591](matrix-org#10591))
- Convert `Transaction` and `Edu` objects to attrs. ([\matrix-org#10542](matrix-org#10542))
- Update `/batch_send` endpoint to only return `state_events` created by the `state_events_from_before` passed in. ([\matrix-org#10552](matrix-org#10552))
- Update contributing.md to warn against rebasing an open PR. ([\matrix-org#10563](matrix-org#10563))
- Remove the unused public rooms replication stream. ([\matrix-org#10565](matrix-org#10565))
- Clarify error message when failing to join a restricted room. ([\matrix-org#10572](matrix-org#10572))
- Remove references to BuildKite in favour of GitHub Actions. ([\matrix-org#10573](matrix-org#10573))
- Move `/batch_send` endpoint defined by [MSC2716](matrix-org/matrix-spec-proposals#2716) to the `/v2_alpha` directory. ([\matrix-org#10576](matrix-org#10576))
- Allow multiple custom directories in `read_templates`. ([\matrix-org#10587](matrix-org#10587))
- Re-organize the `synapse.federation.transport.server` module to create smaller files. ([\matrix-org#10590](matrix-org#10590))
- Flatten the `synapse.rest.client` package by moving the contents of `v1` and `v2_alpha` into the parent. ([\matrix-org#10600](matrix-org#10600))
- Build Debian packages for Debian 12 (Bookworm). ([\matrix-org#10612](matrix-org#10612))
- Fix up a couple of links to the database schema documentation. ([\matrix-org#10620](matrix-org#10620))
- Fix a broken link to the upgrade notes. ([\matrix-org#10631](matrix-org#10631))
babolivier added a commit to matrix-org/synapse-dinsic that referenced this pull request Sep 1, 2021
Synapse 1.41.0 (2021-08-24)
===========================

This release adds support for Debian 12 (Bookworm), but **removes support for Ubuntu 20.10 (Groovy Gorilla)**, which reached End of Life last month.

Note that when using workers the `/_synapse/admin/v1/users/{userId}/media` must now be handled by media workers. See the [upgrade notes](https://matrix-org.github.io/synapse/latest/upgrade.html) for more information.

Features
--------

- Enable room capabilities ([MSC3244](matrix-org/matrix-spec-proposals#3244)) by default and set room version 8 as the preferred room version when creating restricted rooms. ([\#10571](matrix-org/synapse#10571))

Synapse 1.41.0rc1 (2021-08-18)
==============================

Features
--------

- Add `get_userinfo_by_id` method to ModuleApi. ([\#9581](matrix-org/synapse#9581))
- Initial local support for [MSC3266](matrix-org/synapse#10394), Room Summary over the unstable `/rooms/{roomIdOrAlias}/summary` API. ([\#10394](matrix-org/synapse#10394))
- Experimental support for [MSC3288](matrix-org/matrix-spec-proposals#3288), sending `room_type` to the identity server for 3pid invites over the `/store-invite` API. ([\#10435](matrix-org/synapse#10435))
- Add support for sending federation requests through a proxy. Contributed by @Bubu and @dklimpel. See the [upgrade notes](https://matrix-org.github.io/synapse/latest/upgrade.html) for more information. ([\#10596](matrix-org/synapse#10596)). ([\#10475](matrix-org/synapse#10475))
- Add support for "marker" events which makes historical events discoverable for servers that already have all of the scrollback history (part of [MSC2716](matrix-org/matrix-spec-proposals#2716)). ([\#10498](matrix-org/synapse#10498))
- Add a configuration setting for the time a `/sync` response is cached for. ([\#10513](matrix-org/synapse#10513))
- The default logging handler for new installations is now `PeriodicallyFlushingMemoryHandler`, a buffered logging handler which periodically flushes itself. ([\#10518](matrix-org/synapse#10518))
- Add support for new redaction rules for historical events specified in [MSC2716](matrix-org/matrix-spec-proposals#2716). ([\#10538](matrix-org/synapse#10538))
- Add a setting to disable TLS when sending email. ([\#10546](matrix-org/synapse#10546))
- Add pagination to the spaces summary based on updates to [MSC2946](matrix-org/matrix-spec-proposals#2946). ([\#10549](matrix-org/synapse#10549), [\#10560](matrix-org/synapse#10560), [\#10569](matrix-org/synapse#10569), [\#10574](matrix-org/synapse#10574), [\#10575](matrix-org/synapse#10575), [\#10579](matrix-org/synapse#10579), [\#10583](matrix-org/synapse#10583))
- Admin API to delete several media for a specific user. Contributed by @dklimpel. ([\#10558](matrix-org/synapse#10558), [\#10628](matrix-org/synapse#10628))
- Add support for routing `/createRoom` to workers. ([\#10564](matrix-org/synapse#10564))
- Update the Synapse Grafana dashboard. ([\#10570](matrix-org/synapse#10570))
- Add an admin API (`GET /_synapse/admin/username_available`) to check if a username is available (regardless of registration settings). ([\#10578](matrix-org/synapse#10578))
- Allow editing a user's `external_ids` via the "Edit User" admin API. Contributed by @dklimpel. ([\#10598](matrix-org/synapse#10598))
- The Synapse manhole no longer needs coroutines to be wrapped in `defer.ensureDeferred`. ([\#10602](matrix-org/synapse#10602))
- Add option to allow modules to run periodic tasks on all instances, rather than just the one configured to run background tasks. ([\#10638](matrix-org/synapse#10638))

Bugfixes
--------

- Add some clarification to the sample config file. Contributed by @Kentokamoto. ([\#10129](matrix-org/synapse#10129))
- Fix a long-standing bug where protocols which are not implemented by any appservices were incorrectly returned via `GET /_matrix/client/r0/thirdparty/protocols`. ([\#10532](matrix-org/synapse#10532))
- Fix exceptions in logs when failing to get remote room list. ([\#10541](matrix-org/synapse#10541))
- Fix longstanding bug which caused the user's presence "status message" to be reset when the user went offline. Contributed by @dklimpel. ([\#10550](matrix-org/synapse#10550))
- Allow public rooms to be previewed in the spaces summary APIs from [MSC2946](matrix-org/matrix-spec-proposals#2946). ([\#10580](matrix-org/synapse#10580))
- Fix a bug introduced in v1.37.1 where an error could occur in the asynchronous processing of PDUs when the queue was empty. ([\#10592](matrix-org/synapse#10592))
- Fix errors on /sync when read receipt data is a string. Only affects homeservers with the experimental flag for [MSC2285](matrix-org/matrix-spec-proposals#2285) enabled. Contributed by @SimonBrandner. ([\#10606](matrix-org/synapse#10606))
- Additional validation for the spaces summary API to avoid errors like `ValueError: Stop argument for islice() must be None or an integer`. The missing validation has existed since v1.31.0. ([\#10611](matrix-org/synapse#10611))
- Revert behaviour introduced in v1.38.0 that strips `org.matrix.msc2732.device_unused_fallback_key_types` from `/sync` when its value is empty. This field should instead always be present according to [MSC2732](https://github.com/matrix-org/matrix-doc/blob/master/proposals/2732-olm-fallback-keys.md). ([\#10623](matrix-org/synapse#10623))

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

- Add documentation for configuring a forward proxy. ([\#10443](matrix-org/synapse#10443))
- Updated the reverse proxy documentation to highlight the homserver configuration that is needed to make Synapse aware that is is intentionally reverse proxied. ([\#10551](matrix-org/synapse#10551))
- Update CONTRIBUTING.md to fix index links and the instructions for SyTest in docker. ([\#10599](matrix-org/synapse#10599))

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

- No longer build `.deb` packages for Ubuntu 20.10 Groovy Gorilla, which has now EOLed. ([\#10588](matrix-org/synapse#10588))
- The `template_dir` configuration settings in the `sso`, `account_validity` and `email` sections of the configuration file are now deprecated in favour of the global `templates.custom_template_directory` setting. See the [upgrade notes](https://matrix-org.github.io/synapse/latest/upgrade.html) for more information. ([\#10596](matrix-org/synapse#10596))

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

- Improve event caching mechanism to avoid having multiple copies of an event in memory at a time. ([\#10119](matrix-org/synapse#10119))
- Reduce errors in PostgreSQL logs due to concurrent serialization errors. ([\#10504](matrix-org/synapse#10504))
- Include room ID in ignored EDU log messages. Contributed by @ilmari. ([\#10507](matrix-org/synapse#10507))
- Add pagination to the spaces summary based on updates to [MSC2946](matrix-org/matrix-spec-proposals#2946). ([\#10527](matrix-org/synapse#10527), [\#10530](matrix-org/synapse#10530))
- Fix CI to not break when run against branches rather than pull requests. ([\#10529](matrix-org/synapse#10529))
- Mark all events stemming from the [MSC2716](matrix-org/matrix-spec-proposals#2716) `/batch_send` endpoint as historical. ([\#10537](matrix-org/synapse#10537))
- Clean up some of the federation event authentication code for clarity. ([\#10539](matrix-org/synapse#10539), [\#10591](matrix-org/synapse#10591))
- Convert `Transaction` and `Edu` objects to attrs. ([\#10542](matrix-org/synapse#10542))
- Update `/batch_send` endpoint to only return `state_events` created by the `state_events_from_before` passed in. ([\#10552](matrix-org/synapse#10552))
- Update contributing.md to warn against rebasing an open PR. ([\#10563](matrix-org/synapse#10563))
- Remove the unused public rooms replication stream. ([\#10565](matrix-org/synapse#10565))
- Clarify error message when failing to join a restricted room. ([\#10572](matrix-org/synapse#10572))
- Remove references to BuildKite in favour of GitHub Actions. ([\#10573](matrix-org/synapse#10573))
- Move `/batch_send` endpoint defined by [MSC2716](matrix-org/matrix-spec-proposals#2716) to the `/v2_alpha` directory. ([\#10576](matrix-org/synapse#10576))
- Allow multiple custom directories in `read_templates`. ([\#10587](matrix-org/synapse#10587))
- Re-organize the `synapse.federation.transport.server` module to create smaller files. ([\#10590](matrix-org/synapse#10590))
- Flatten the `synapse.rest.client` package by moving the contents of `v1` and `v2_alpha` into the parent. ([\#10600](matrix-org/synapse#10600))
- Build Debian packages for Debian 12 (Bookworm). ([\#10612](matrix-org/synapse#10612))
- Fix up a couple of links to the database schema documentation. ([\#10620](matrix-org/synapse#10620))
- Fix a broken link to the upgrade notes. ([\#10631](matrix-org/synapse#10631))
Fizzadar pushed a commit to Fizzadar/synapse that referenced this pull request Oct 26, 2021
Synapse 1.41.0 (2021-08-24)
===========================

This release adds support for Debian 12 (Bookworm), but **removes support for Ubuntu 20.10 (Groovy Gorilla)**, which reached End of Life last month.

Note that when using workers the `/_synapse/admin/v1/users/{userId}/media` must now be handled by media workers. See the [upgrade notes](https://matrix-org.github.io/synapse/latest/upgrade.html) for more information.

Features
--------

- Enable room capabilities ([MSC3244](matrix-org/matrix-spec-proposals#3244)) by default and set room version 8 as the preferred room version when creating restricted rooms. ([\matrix-org#10571](matrix-org#10571))

Synapse 1.41.0rc1 (2021-08-18)
==============================

Features
--------

- Add `get_userinfo_by_id` method to ModuleApi. ([\matrix-org#9581](matrix-org#9581))
- Initial local support for [MSC3266](matrix-org#10394), Room Summary over the unstable `/rooms/{roomIdOrAlias}/summary` API. ([\matrix-org#10394](matrix-org#10394))
- Experimental support for [MSC3288](matrix-org/matrix-spec-proposals#3288), sending `room_type` to the identity server for 3pid invites over the `/store-invite` API. ([\matrix-org#10435](matrix-org#10435))
- Add support for sending federation requests through a proxy. Contributed by @Bubu and @dklimpel. See the [upgrade notes](https://matrix-org.github.io/synapse/latest/upgrade.html) for more information. ([\matrix-org#10596](matrix-org#10596)). ([\matrix-org#10475](matrix-org#10475))
- Add support for "marker" events which makes historical events discoverable for servers that already have all of the scrollback history (part of [MSC2716](matrix-org/matrix-spec-proposals#2716)). ([\matrix-org#10498](matrix-org#10498))
- Add a configuration setting for the time a `/sync` response is cached for. ([\matrix-org#10513](matrix-org#10513))
- The default logging handler for new installations is now `PeriodicallyFlushingMemoryHandler`, a buffered logging handler which periodically flushes itself. ([\matrix-org#10518](matrix-org#10518))
- Add support for new redaction rules for historical events specified in [MSC2716](matrix-org/matrix-spec-proposals#2716). ([\matrix-org#10538](matrix-org#10538))
- Add a setting to disable TLS when sending email. ([\matrix-org#10546](matrix-org#10546))
- Add pagination to the spaces summary based on updates to [MSC2946](matrix-org/matrix-spec-proposals#2946). ([\matrix-org#10549](matrix-org#10549), [\matrix-org#10560](matrix-org#10560), [\matrix-org#10569](matrix-org#10569), [\matrix-org#10574](matrix-org#10574), [\matrix-org#10575](matrix-org#10575), [\matrix-org#10579](matrix-org#10579), [\matrix-org#10583](matrix-org#10583))
- Admin API to delete several media for a specific user. Contributed by @dklimpel. ([\matrix-org#10558](matrix-org#10558), [\matrix-org#10628](matrix-org#10628))
- Add support for routing `/createRoom` to workers. ([\matrix-org#10564](matrix-org#10564))
- Update the Synapse Grafana dashboard. ([\matrix-org#10570](matrix-org#10570))
- Add an admin API (`GET /_synapse/admin/username_available`) to check if a username is available (regardless of registration settings). ([\matrix-org#10578](matrix-org#10578))
- Allow editing a user's `external_ids` via the "Edit User" admin API. Contributed by @dklimpel. ([\matrix-org#10598](matrix-org#10598))
- The Synapse manhole no longer needs coroutines to be wrapped in `defer.ensureDeferred`. ([\matrix-org#10602](matrix-org#10602))
- Add option to allow modules to run periodic tasks on all instances, rather than just the one configured to run background tasks. ([\matrix-org#10638](matrix-org#10638))

Bugfixes
--------

- Add some clarification to the sample config file. Contributed by @Kentokamoto. ([\matrix-org#10129](matrix-org#10129))
- Fix a long-standing bug where protocols which are not implemented by any appservices were incorrectly returned via `GET /_matrix/client/r0/thirdparty/protocols`. ([\matrix-org#10532](matrix-org#10532))
- Fix exceptions in logs when failing to get remote room list. ([\matrix-org#10541](matrix-org#10541))
- Fix longstanding bug which caused the user's presence "status message" to be reset when the user went offline. Contributed by @dklimpel. ([\matrix-org#10550](matrix-org#10550))
- Allow public rooms to be previewed in the spaces summary APIs from [MSC2946](matrix-org/matrix-spec-proposals#2946). ([\matrix-org#10580](matrix-org#10580))
- Fix a bug introduced in v1.37.1 where an error could occur in the asynchronous processing of PDUs when the queue was empty. ([\matrix-org#10592](matrix-org#10592))
- Fix errors on /sync when read receipt data is a string. Only affects homeservers with the experimental flag for [MSC2285](matrix-org/matrix-spec-proposals#2285) enabled. Contributed by @SimonBrandner. ([\matrix-org#10606](matrix-org#10606))
- Additional validation for the spaces summary API to avoid errors like `ValueError: Stop argument for islice() must be None or an integer`. The missing validation has existed since v1.31.0. ([\matrix-org#10611](matrix-org#10611))
- Revert behaviour introduced in v1.38.0 that strips `org.matrix.msc2732.device_unused_fallback_key_types` from `/sync` when its value is empty. This field should instead always be present according to [MSC2732](https://github.com/matrix-org/matrix-doc/blob/master/proposals/2732-olm-fallback-keys.md). ([\matrix-org#10623](matrix-org#10623))

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

- Add documentation for configuring a forward proxy. ([\matrix-org#10443](matrix-org#10443))
- Updated the reverse proxy documentation to highlight the homserver configuration that is needed to make Synapse aware that is is intentionally reverse proxied. ([\matrix-org#10551](matrix-org#10551))
- Update CONTRIBUTING.md to fix index links and the instructions for SyTest in docker. ([\matrix-org#10599](matrix-org#10599))

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

- No longer build `.deb` packages for Ubuntu 20.10 Groovy Gorilla, which has now EOLed. ([\matrix-org#10588](matrix-org#10588))
- The `template_dir` configuration settings in the `sso`, `account_validity` and `email` sections of the configuration file are now deprecated in favour of the global `templates.custom_template_directory` setting. See the [upgrade notes](https://matrix-org.github.io/synapse/latest/upgrade.html) for more information. ([\matrix-org#10596](matrix-org#10596))

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

- Improve event caching mechanism to avoid having multiple copies of an event in memory at a time. ([\matrix-org#10119](matrix-org#10119))
- Reduce errors in PostgreSQL logs due to concurrent serialization errors. ([\matrix-org#10504](matrix-org#10504))
- Include room ID in ignored EDU log messages. Contributed by @ilmari. ([\matrix-org#10507](matrix-org#10507))
- Add pagination to the spaces summary based on updates to [MSC2946](matrix-org/matrix-spec-proposals#2946). ([\matrix-org#10527](matrix-org#10527), [\matrix-org#10530](matrix-org#10530))
- Fix CI to not break when run against branches rather than pull requests. ([\matrix-org#10529](matrix-org#10529))
- Mark all events stemming from the [MSC2716](matrix-org/matrix-spec-proposals#2716) `/batch_send` endpoint as historical. ([\matrix-org#10537](matrix-org#10537))
- Clean up some of the federation event authentication code for clarity. ([\matrix-org#10539](matrix-org#10539), [\matrix-org#10591](matrix-org#10591))
- Convert `Transaction` and `Edu` objects to attrs. ([\matrix-org#10542](matrix-org#10542))
- Update `/batch_send` endpoint to only return `state_events` created by the `state_events_from_before` passed in. ([\matrix-org#10552](matrix-org#10552))
- Update contributing.md to warn against rebasing an open PR. ([\matrix-org#10563](matrix-org#10563))
- Remove the unused public rooms replication stream. ([\matrix-org#10565](matrix-org#10565))
- Clarify error message when failing to join a restricted room. ([\matrix-org#10572](matrix-org#10572))
- Remove references to BuildKite in favour of GitHub Actions. ([\matrix-org#10573](matrix-org#10573))
- Move `/batch_send` endpoint defined by [MSC2716](matrix-org/matrix-spec-proposals#2716) to the `/v2_alpha` directory. ([\matrix-org#10576](matrix-org#10576))
- Allow multiple custom directories in `read_templates`. ([\matrix-org#10587](matrix-org#10587))
- Re-organize the `synapse.federation.transport.server` module to create smaller files. ([\matrix-org#10590](matrix-org#10590))
- Flatten the `synapse.rest.client` package by moving the contents of `v1` and `v2_alpha` into the parent. ([\matrix-org#10600](matrix-org#10600))
- Build Debian packages for Debian 12 (Bookworm). ([\matrix-org#10612](matrix-org#10612))
- Fix up a couple of links to the database schema documentation. ([\matrix-org#10620](matrix-org#10620))
- Fix a broken link to the upgrade notes. ([\matrix-org#10631](matrix-org#10631))
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