Synapse 1.24.0rc1 (2020-12-02)

==============================

Features
--------

- Add admin API for logging in as a user. ([\#8617](https://github.com/matrix-org/synapse/issues/8617))
- Allow specification of the SAML IdP if the metadata returns multiple IdPs. ([\#8630](https://github.com/matrix-org/synapse/issues/8630))
- Add support for re-trying generation of a localpart for OpenID Connect mapping providers. ([\#8801](https://github.com/matrix-org/synapse/issues/8801), [\#8855](https://github.com/matrix-org/synapse/issues/8855))
- Allow the `Date` header through CORS. Contributed by Nicolas Chamo. ([\#8804](https://github.com/matrix-org/synapse/issues/8804))
- Add a config option, `push.group_by_unread_count`, which controls whether unread message counts in push notifications are defined as "the number of rooms with unread messages" or "total unread messages". ([\#8820](https://github.com/matrix-org/synapse/issues/8820))
- Add `force_purge` option to delete-room admin api. ([\#8843](https://github.com/matrix-org/synapse/issues/8843))

Bugfixes
--------

- Fix a bug where appservices may be sent an excessive amount of read receipts and presence. Broke in v1.22.0. ([\#8744](https://github.com/matrix-org/synapse/issues/8744))
- Fix a bug in some federation APIs which could lead to unexpected behaviour if different parameters were set in the URI and the request body. ([\#8776](https://github.com/matrix-org/synapse/issues/8776))
- Fix a bug where synctl could spawn duplicate copies of a worker. Contributed by Waylon Cude. ([\#8798](https://github.com/matrix-org/synapse/issues/8798))
- Allow per-room profiles to be used for the server notice user. ([\#8799](https://github.com/matrix-org/synapse/issues/8799))
- Fix a bug where logging could break after a call to SIGHUP. ([\#8817](https://github.com/matrix-org/synapse/issues/8817))
- Fix `register_new_matrix_user` failing with "Bad Request" when trailing slash is included in server URL. Contributed by @angdraug. ([\#8823](https://github.com/matrix-org/synapse/issues/8823))
- Fix a minor long-standing bug in login, where we would offer the `password` login type if a custom auth provider supported it, even if password login was disabled. ([\#8835](https://github.com/matrix-org/synapse/issues/8835))
- Fix a long-standing bug which caused Synapse to require unspecified parameters during user-interactive authentication. ([\#8848](https://github.com/matrix-org/synapse/issues/8848))
- Fix a bug introduced in v1.20.0 where the user-agent and IP address reported during user registration for CAS, OpenID Connect, and SAML were of the wrong form. ([\#8784](https://github.com/matrix-org/synapse/issues/8784))

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

- Clarify the usecase for a msisdn delegate. Contributed by Adrian Wannenmacher. ([\#8734](https://github.com/matrix-org/synapse/issues/8734))
- Remove extraneous comma from JSON example in User Admin API docs. ([\#8771](https://github.com/matrix-org/synapse/issues/8771))
- Update `turn-howto.md` with troubleshooting notes. ([\#8779](https://github.com/matrix-org/synapse/issues/8779))
- Fix the example on how to set the `Content-Type` header in nginx for the Client Well-Known URI. ([\#8793](https://github.com/matrix-org/synapse/issues/8793))
- Improve the documentation for the admin API to list all media in a room with respect to encrypted events. ([\#8795](https://github.com/matrix-org/synapse/issues/8795))
- Update the formatting of the `push` section of the homeserver config file to better align with the [code style guidelines](https://github.com/matrix-org/synapse/blob/develop/docs/code_style.md#configuration-file-format). ([\#8818](https://github.com/matrix-org/synapse/issues/8818))
- Improve documentation how to configure prometheus for workers. ([\#8822](https://github.com/matrix-org/synapse/issues/8822))
- Update example prometheus console. ([\#8824](https://github.com/matrix-org/synapse/issues/8824))

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

- Remove old `/_matrix/client/*/admin` endpoints which were deprecated since Synapse 1.20.0. ([\#8785](https://github.com/matrix-org/synapse/issues/8785))
- Disable pretty printing JSON responses for curl. Users who want pretty-printed output should use [jq](https://stedolan.github.io/jq/) in combination with curl. Contributed by @tulir. ([\#8833](https://github.com/matrix-org/synapse/issues/8833))

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

- Simplify the way the `HomeServer` object caches its internal attributes. ([\#8565](https://github.com/matrix-org/synapse/issues/8565), [\#8851](https://github.com/matrix-org/synapse/issues/8851))
- Add an example and documentation for clock skew to the SAML2 sample configuration to allow for clock/time difference between the homserver and IdP. Contributed by @localguru. ([\#8731](https://github.com/matrix-org/synapse/issues/8731))
- Generalise `RoomMemberHandler._locally_reject_invite` to apply to more flows than just invite. ([\#8751](https://github.com/matrix-org/synapse/issues/8751))
- Generalise `RoomStore.maybe_store_room_on_invite` to handle other, non-invite membership events. ([\#8754](https://github.com/matrix-org/synapse/issues/8754))
- Refactor test utilities for injecting HTTP requests. ([\#8757](https://github.com/matrix-org/synapse/issues/8757), [\#8758](https://github.com/matrix-org/synapse/issues/8758), [\#8759](https://github.com/matrix-org/synapse/issues/8759), [\#8760](https://github.com/matrix-org/synapse/issues/8760), [\#8761](https://github.com/matrix-org/synapse/issues/8761), [\#8777](https://github.com/matrix-org/synapse/issues/8777))
- Consolidate logic between the OpenID Connect and SAML code. ([\#8765](https://github.com/matrix-org/synapse/issues/8765))
- Use `TYPE_CHECKING` instead of magic `MYPY` variable. ([\#8770](https://github.com/matrix-org/synapse/issues/8770))
- Add a commandline script to sign arbitrary json objects. ([\#8772](https://github.com/matrix-org/synapse/issues/8772))
- Minor log line improvements for the SSO mapping code used to generate Matrix IDs from SSO IDs. ([\#8773](https://github.com/matrix-org/synapse/issues/8773))
- Add additional error checking for OpenID Connect and SAML mapping providers. ([\#8774](https://github.com/matrix-org/synapse/issues/8774), [\#8800](https://github.com/matrix-org/synapse/issues/8800))
- Add type hints to HTTP abstractions. ([\#8806](https://github.com/matrix-org/synapse/issues/8806), [\#8812](https://github.com/matrix-org/synapse/issues/8812))
- Remove unnecessary function arguments and add typing to several membership replication classes. ([\#8809](https://github.com/matrix-org/synapse/issues/8809))
- Optimise the lookup for an invite from another homeserver when trying to reject it. ([\#8815](https://github.com/matrix-org/synapse/issues/8815))
- Add tests for `password_auth_provider`s. ([\#8819](https://github.com/matrix-org/synapse/issues/8819))
- Drop redundant database index on `event_json`. ([\#8845](https://github.com/matrix-org/synapse/issues/8845))
- Simplify `uk.half-shot.msc2778.login.application_service` login handler. ([\#8847](https://github.com/matrix-org/synapse/issues/8847))
- Refactor `password_auth_provider` support code. ([\#8849](https://github.com/matrix-org/synapse/issues/8849))
- Add missing `ordering` to background database updates. ([\#8850](https://github.com/matrix-org/synapse/issues/8850))
- Allow for specifying a room version when creating a room in unit tests via `RestHelper.create_room_as`. ([\#8854](https://github.com/matrix-org/synapse/issues/8854))
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