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))

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))