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Stop shadow-banned users from sending non-member events. #8142

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merged 4 commits into from
Aug 24, 2020
Merged

Stop shadow-banned users from sending non-member events. #8142

merged 4 commits into from
Aug 24, 2020

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clokep
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@clokep clokep commented Aug 20, 2020 •
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This is the last (?) piece of #8028 to get spun out. I've already taken a couple of the comments from @richvdh into account here.

It blocks shadow-banned users from sending non-member events. This adds a check to create_and_send_nonmember_event, but I suspect the same check should be done in send_nonmember_event? Perhaps as a separate PR or perhaps as this one?

@clokep clokep force-pushed the clokep/shadow-banned-events branch from 6b24762 to aa49528 Compare August 20, 2020 20:08
clokep
clokep commented Aug 20, 2020
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synapse/handlers/directory.py
Comment on lines +203 to +204
except ShadowBanError as e:
logger.info("Failed to update alias events due to shadow-ban: %s", e)
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Previously this did not get caught and kept raising.

clokep
clokep commented Aug 20, 2020
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synapse/handlers/room.py
Comment on lines +183 to +184
Raises:
ShadowBanError if the requester is shadow-banned.
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I wonder if this should catch here and just create a new room for the shadow-banned person instead of continuing to raise ShadowBanError?

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Possibly, or just no-op. I think it'll be a pretty rare case given you need to be a mod to upgrade a room.

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Alright. This does get caught at the REST layer and a fake room ID is returned.

@clokep clokep requested a review from a team August 20, 2020 20:16
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clokep commented Aug 20, 2020

I'm going to request review on this more for feedback than anything else. 👍

erikjohnston
erikjohnston approved these changes Aug 24, 2020
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I think this looks fine. Have we covered the case of blocking invites?

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clokep commented Aug 24, 2020

I think this looks fine. Have we covered the case of blocking invites?

@erikjohnston Invites were handled in #8095.

clokep
clokep commented Aug 24, 2020
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synapse/handlers/message.py Outdated Show resolved Hide resolved
@clokep clokep merged commit cbd8d83 into develop Aug 24, 2020
@clokep clokep deleted the clokep/shadow-banned-events branch August 24, 2020 17:58
@clokep clokep mentioned this pull request Aug 24, 2020
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anoadragon453 added a commit that referenced this pull request Aug 26, 2020
@anoadragon453
Merge branch 'develop' of github.com:matrix-org/synapse into anoa/use…
7affcd0 
…r_param_ui_auth

* 'develop' of github.com:matrix-org/synapse: (369 commits)
  Add functions to `MultiWriterIdGen` used by events stream (#8164)
  Do not allow send_nonmember_event to be called with shadow-banned users. (#8158)
  Changelog fixes
  1.19.1rc1
  Make StreamIdGen `get_next` and `get_next_mult` async  (#8161)
  Wording fixes to 'name' user admin api filter (#8163)
  Fix missing double-backtick in RST document
  Search in columns 'name' and 'displayname' in the admin users endpoint (#7377)
  Add type hints for state. (#8140)
  Stop shadow-banned users from sending non-member events. (#8142)
  Allow capping a room's retention policy (#8104)
  Add healthcheck for default localhost 8008 port on /health endpoint. (#8147)
  Fix flaky shadow-ban tests. (#8152)
  Fix join ratelimiter breaking profile updates and idempotency (#8153)
  Do not apply ratelimiting on joins to appservices (#8139)
  Don't fail /submit_token requests on incorrect session ID if request_token_inhibit_3pid_errors is turned on (#7991)
  Do not apply ratelimiting on joins to appservices (#8139)
  Micro-optimisations to get_auth_chain_ids (#8132)
  Allow denying or shadow banning registrations via the spam checker (#8034)
  Stop shadow-banned users from sending invites. (#8095)
  ...
anoadragon453 added a commit that referenced this pull request Aug 26, 2020
@anoadragon453
Merge branch 'develop' of github.com:matrix-org/synapse into anoa/pas…
3f4e350 
…sword_reset_confirmation

* 'develop' of github.com:matrix-org/synapse: (22 commits)
  Update the test federation client to handle streaming responses (#8130)
  Do not propagate profile changes of shadow-banned users into rooms. (#8157)
  Make SlavedIdTracker.advance have same interface as MultiWriterIDGenerator (#8171)
  Convert simple_select_one and simple_select_one_onecol to async (#8162)
  Fix rate limiting unit tests. (#8167)
  Add functions to `MultiWriterIdGen` used by events stream (#8164)
  Do not allow send_nonmember_event to be called with shadow-banned users. (#8158)
  Changelog fixes
  1.19.1rc1
  Make StreamIdGen `get_next` and `get_next_mult` async  (#8161)
  Wording fixes to 'name' user admin api filter (#8163)
  Fix missing double-backtick in RST document
  Search in columns 'name' and 'displayname' in the admin users endpoint (#7377)
  Add type hints for state. (#8140)
  Stop shadow-banned users from sending non-member events. (#8142)
  Allow capping a room's retention policy (#8104)
  Add healthcheck for default localhost 8008 port on /health endpoint. (#8147)
  Fix flaky shadow-ban tests. (#8152)
  Fix join ratelimiter breaking profile updates and idempotency (#8153)
  Do not apply ratelimiting on joins to appservices (#8139)
  ...
anoadragon453 added a commit that referenced this pull request Aug 26, 2020
@anoadragon453
Merge branch 'develop' of github.com:matrix-org/synapse into anoa/imp…
ac9d346 
…rove_test_times

* 'develop' of github.com:matrix-org/synapse: (160 commits)
  Update the test federation client to handle streaming responses (#8130)
  Do not propagate profile changes of shadow-banned users into rooms. (#8157)
  Make SlavedIdTracker.advance have same interface as MultiWriterIDGenerator (#8171)
  Convert simple_select_one and simple_select_one_onecol to async (#8162)
  Fix rate limiting unit tests. (#8167)
  Add functions to `MultiWriterIdGen` used by events stream (#8164)
  Do not allow send_nonmember_event to be called with shadow-banned users. (#8158)
  Changelog fixes
  1.19.1rc1
  Make StreamIdGen `get_next` and `get_next_mult` async  (#8161)
  Wording fixes to 'name' user admin api filter (#8163)
  Fix missing double-backtick in RST document
  Search in columns 'name' and 'displayname' in the admin users endpoint (#7377)
  Add type hints for state. (#8140)
  Stop shadow-banned users from sending non-member events. (#8142)
  Allow capping a room's retention policy (#8104)
  Add healthcheck for default localhost 8008 port on /health endpoint. (#8147)
  Fix flaky shadow-ban tests. (#8152)
  Fix join ratelimiter breaking profile updates and idempotency (#8153)
  Do not apply ratelimiting on joins to appservices (#8139)
  ...
richvdh added a commit that referenced this pull request Sep 8, 2020
@richvdh
Merge tag 'v1.20.0rc1' into develop
cca03db 
Synapse 1.20.0rc1 (2020-09-08)
==============================

Removal warning
---------------

Some older clients used a [disallowed character](https://matrix.org/docs/spec/client_server/r0.6.1#post-matrix-client-r0-register-email-requesttoken) (`:`) in the `client_secret` parameter of various endpoints. The incorrect behaviour was allowed for backwards compatibility, but is now being removed from Synapse as most users have updated their client. Further context can be found at [\#6766](#6766).

Features
--------

- Add an endpoint to query your shared rooms with another user as an implementation of [MSC2666](matrix-org/matrix-spec-proposals#2666). ([\#7785](#7785))
- Iteratively encode JSON to avoid blocking the reactor. ([\#8013](#8013), [\#8116](#8116))
- Add support for shadow-banning users (ignoring any message send requests). ([\#8034](#8034), [\#8092](#8092), [\#8095](#8095), [\#8142](#8142), [\#8152](#8152), [\#8157](#8157), [\#8158](#8158), [\#8176](#8176))
- Use the default template file when its equivalent is not found in a custom template directory. ([\#8037](#8037), [\#8107](#8107), [\#8252](#8252))
- Add unread messages count to sync responses, as specified in [MSC2654](matrix-org/matrix-spec-proposals#2654). ([\#8059](#8059), [\#8254](#8254), [\#8270](#8270), [\#8274](#8274))
- Optimise `/federation/v1/user/devices/` API by only returning devices with encryption keys. ([\#8198](#8198))

Bugfixes
--------

- Fix a memory leak by limiting the length of time that messages will be queued for a remote server that has been unreachable. ([\#7864](#7864))
- Fix `Re-starting finished log context PUT-nnnn` warning when event persistence failed. ([\#8081](#8081))
- Synapse now correctly enforces the valid characters in the `client_secret` parameter used in various endpoints. ([\#8101](#8101))
- Fix a bug introduced in v1.7.2 impacting message retention policies that would allow federated homeservers to dictate a retention period that's lower than the configured minimum allowed duration in the configuration file. ([\#8104](#8104))
- Fix a long-standing bug where invalid JSON would be accepted by Synapse. ([\#8106](#8106))
- Fix a bug introduced in Synapse v1.12.0 which could cause `/sync` requests to fail with a 404 if you had a very old outstanding room invite. ([\#8110](#8110))
- Return a proper error code when the rooms of an invalid group are requested. ([\#8129](#8129))
- Fix a bug which could cause a leaked postgres connection if synapse was set to daemonize. ([\#8131](#8131))
- Clarify the error code if a user tries to register with a numeric ID. This bug was introduced in v1.15.0. ([\#8135](#8135))
- Fix a bug where appservices with ratelimiting disabled would still be ratelimited when joining rooms. This bug was introduced in v1.19.0. ([\#8139](#8139))
- Fix logging in via OpenID Connect with a provider that uses integer user IDs. ([\#8190](#8190))
- Fix a longstanding bug where user directory updates could break when unexpected profile data was included in events. ([\#8223](#8223))
- Fix a longstanding bug where stats updates could break when unexpected profile data was included in events. ([\#8226](#8226))
- Fix slow start times for large servers by removing a table scan of the `users` table from startup code. ([\#8271](#8271))

Updates to the Docker image
---------------------------

- Fix builds of the Docker image on non-x86 platforms. ([\#8144](#8144))
- Added curl for healthcheck support and readme updates for the change. Contributed by @maquis196. ([\#8147](#8147))

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

- Link to matrix-synapse-rest-password-provider in the password provider documentation. ([\#8111](#8111))
- Updated documentation to note that Synapse does not follow `HTTP 308` redirects due to an upstream library not supporting them. Contributed by Ryan Cole. ([\#8120](#8120))
- Explain better what GDPR-erased means when deactivating a user. ([\#8189](#8189))

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

- Add filter `name` to the `/users` admin API, which filters by user ID or displayname. Contributed by Awesome Technologies Innovationslabor GmbH. ([\#7377](#7377), [\#8163](#8163))
- Reduce run times of some unit tests by advancing the reactor a fewer number of times. ([\#7757](#7757))
- Don't fail `/submit_token` requests on incorrect session ID if `request_token_inhibit_3pid_errors` is turned on. ([\#7991](#7991))
- Convert various parts of the codebase to async/await. ([\#8071](#8071), [\#8072](#8072), [\#8074](#8074), [\#8075](#8075), [\#8076](#8076), [\#8087](#8087), [\#8100](#8100), [\#8119](#8119), [\#8121](#8121), [\#8133](#8133), [\#8156](#8156), [\#8162](#8162), [\#8166](#8166), [\#8168](#8168), [\#8173](#8173), [\#8191](#8191), [\#8192](#8192), [\#8193](#8193), [\#8194](#8194), [\#8195](#8195), [\#8197](#8197), [\#8199](#8199), [\#8200](#8200), [\#8201](#8201), [\#8202](#8202), [\#8207](#8207), [\#8213](#8213), [\#8214](#8214))
- Remove some unused database functions. ([\#8085](#8085))
- Add type hints to various parts of the codebase. ([\#8090](#8090), [\#8127](#8127), [\#8187](#8187), [\#8241](#8241), [\#8140](#8140), [\#8183](#8183), [\#8232](#8232), [\#8235](#8235), [\#8237](#8237), [\#8244](#8244))
- Return the previous stream token if a non-member event is a duplicate. ([\#8093](#8093), [\#8112](#8112))
- Separate `get_current_token` into two since there are two different use cases for it. ([\#8113](#8113))
- Remove `ChainedIdGenerator`. ([\#8123](#8123))
- Reduce the amount of whitespace in JSON stored and sent in responses. ([\#8124](#8124))
- Update the test federation client to handle streaming responses. ([\#8130](#8130))
- Micro-optimisations to `get_auth_chain_ids`. ([\#8132](#8132))
- Refactor `StreamIdGenerator` and `MultiWriterIdGenerator` to have the same interface. ([\#8161](#8161))
- Add functions to `MultiWriterIdGen` used by events stream. ([\#8164](#8164), [\#8179](#8179))
- Fix tests that were broken due to the merge of 1.19.1. ([\#8167](#8167))
- Make `SlavedIdTracker.advance` have the same interface as `MultiWriterIDGenerator`. ([\#8171](#8171))
- Remove unused `is_guest` parameter from, and add safeguard to, `MessageHandler.get_room_data`. ([\#8174](#8174), [\#8181](#8181))
- Standardize the mypy configuration. ([\#8175](#8175))
- Refactor some of `LoginRestServlet`'s helper methods, and move them to `AuthHandler` for easier reuse. ([\#8182](#8182))
- Fix `wait_for_stream_position` to allow multiple waiters on same stream ID. ([\#8196](#8196))
- Make `MultiWriterIDGenerator` work for streams that use negative values. ([\#8203](#8203))
- Refactor queries for device keys and cross-signatures. ([\#8204](#8204), [\#8205](#8205), [\#8222](#8222), [\#8224](#8224), [\#8225](#8225), [\#8231](#8231), [\#8233](#8233), [\#8234](#8234))
- Fix type hints for functions decorated with `@cached`. ([\#8240](#8240))
- Remove obsolete `order` field from federation send queues. ([\#8245](#8245))
- Stop sub-classing from object. ([\#8249](#8249))
- Add more logging to debug slow startup. ([\#8264](#8264))
- Do not attempt to upgrade database schema on worker processes. ([\#8266](#8266), [\#8276](#8276))
netbsd-srcmastr pushed a commit to NetBSD/pkgsrc that referenced this pull request Sep 22, 2020
@Midar
Update chat/matrix-synapse to 1.20.0
b9a5c7d 
Synapse 1.20.0 (2020-09-22)
===========================

No significant changes since v1.20.0rc5.

Removal warning
---------------

Historically, the [Synapse Admin
API](https://github.com/matrix-org/synapse/tree/master/docs) has been
accessible under the `/_matrix/client/api/v1/admin`,
`/_matrix/client/unstable/admin`, `/_matrix/client/r0/admin` and
`/_synapse/admin` prefixes. In a future release, we will be dropping support
for accessing Synapse's Admin API using the `/_matrix/client/*` prefixes. This
makes it easier for homeserver admins to lock down external access to the Admin
API endpoints.

Synapse 1.20.0rc5 (2020-09-18)
==============================

In addition to the below, Synapse 1.20.0rc5 also includes the bug fix that was included in 1.19.3.

Features
--------

- Add flags to the `/versions` endpoint for whether new rooms default to using E2EE. ([\#8343](matrix-org/synapse#8343))


Bugfixes
--------

- Fix rate limiting of federation `/send` requests. ([\#8342](matrix-org/synapse#8342))
- Fix a longstanding bug where back pagination over federation could get stuck if it failed to handle a received event. ([\#8349](matrix-org/synapse#8349))


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

- Blacklist [MSC2753](matrix-org/matrix-spec-proposals#2753) SyTests until it is implemented. ([\#8285](matrix-org/synapse#8285))


Synapse 1.20.0rc4 (2020-09-16)
==============================

Synapse 1.20.0rc4 is identical to 1.20.0rc3, with the addition of the security fix that was included in 1.19.2.


Synapse 1.20.0rc3 (2020-09-11)
==============================

Bugfixes
--------

- Fix a bug introduced in v1.20.0rc1 where the wrong exception was raised when invalid JSON data is encountered. ([\#8291](matrix-org/synapse#8291))


Synapse 1.20.0rc2 (2020-09-09)
==============================

Bugfixes
--------

- Fix a bug introduced in v1.20.0rc1 causing some features related to notifications to misbehave following the implementation of unread counts. ([\#8280](matrix-org/synapse#8280))


Synapse 1.20.0rc1 (2020-09-08)
==============================

Removal warning
---------------

Some older clients used a [disallowed character](https://matrix.org/docs/spec/client_server/r0.6.1#post-matrix-client-r0-register-email-requesttoken) (`:`) in the `client_secret` parameter of various endpoints. The incorrect behaviour was allowed for backwards compatibility, but is now being removed from Synapse as most users have updated their client. Further context can be found at [\#6766](matrix-org/synapse#6766).

Features
--------

- Add an endpoint to query your shared rooms with another user as an implementation of [MSC2666](matrix-org/matrix-spec-proposals#2666). ([\#7785](matrix-org/synapse#7785))
- Iteratively encode JSON to avoid blocking the reactor. ([\#8013](matrix-org/synapse#8013), [\#8116](matrix-org/synapse#8116))
- Add support for shadow-banning users (ignoring any message send requests). ([\#8034](matrix-org/synapse#8034), [\#8092](matrix-org/synapse#8092), [\#8095](matrix-org/synapse#8095), [\#8142](matrix-org/synapse#8142), [\#8152](matrix-org/synapse#8152), [\#8157](matrix-org/synapse#8157), [\#8158](matrix-org/synapse#8158), [\#8176](matrix-org/synapse#8176))
- Use the default template file when its equivalent is not found in a custom template directory. ([\#8037](matrix-org/synapse#8037), [\#8107](matrix-org/synapse#8107), [\#8252](matrix-org/synapse#8252))
- Add unread messages count to sync responses, as specified in [MSC2654](matrix-org/matrix-spec-proposals#2654). ([\#8059](matrix-org/synapse#8059), [\#8254](matrix-org/synapse#8254), [\#8270](matrix-org/synapse#8270), [\#8274](matrix-org/synapse#8274))
- Optimise `/federation/v1/user/devices/` API by only returning devices with encryption keys. ([\#8198](matrix-org/synapse#8198))


Bugfixes
--------

- Fix a memory leak by limiting the length of time that messages will be queued for a remote server that has been unreachable. ([\#7864](matrix-org/synapse#7864))
- Fix `Re-starting finished log context PUT-nnnn` warning when event persistence failed. ([\#8081](matrix-org/synapse#8081))
- Synapse now correctly enforces the valid characters in the `client_secret` parameter used in various endpoints. ([\#8101](matrix-org/synapse#8101))
- Fix a bug introduced in v1.7.2 impacting message retention policies that would allow federated homeservers to dictate a retention period that's lower than the configured minimum allowed duration in the configuration file. ([\#8104](matrix-org/synapse#8104))
- Fix a long-standing bug where invalid JSON would be accepted by Synapse. ([\#8106](matrix-org/synapse#8106))
- Fix a bug introduced in Synapse v1.12.0 which could cause `/sync` requests to fail with a 404 if you had a very old outstanding room invite. ([\#8110](matrix-org/synapse#8110))
- Return a proper error code when the rooms of an invalid group are requested. ([\#8129](matrix-org/synapse#8129))
- Fix a bug which could cause a leaked postgres connection if synapse was set to daemonize. ([\#8131](matrix-org/synapse#8131))
- Clarify the error code if a user tries to register with a numeric ID. This bug was introduced in v1.15.0. ([\#8135](matrix-org/synapse#8135))
- Fix a bug where appservices with ratelimiting disabled would still be ratelimited when joining rooms. This bug was introduced in v1.19.0. ([\#8139](matrix-org/synapse#8139))
- Fix logging in via OpenID Connect with a provider that uses integer user IDs. ([\#8190](matrix-org/synapse#8190))
- Fix a longstanding bug where user directory updates could break when unexpected profile data was included in events. ([\#8223](matrix-org/synapse#8223))
- Fix a longstanding bug where stats updates could break when unexpected profile data was included in events. ([\#8226](matrix-org/synapse#8226))
- Fix slow start times for large servers by removing a table scan of the `users` table from startup code. ([\#8271](matrix-org/synapse#8271))


Updates to the Docker image
---------------------------

- Fix builds of the Docker image on non-x86 platforms. ([\#8144](matrix-org/synapse#8144))
- Added curl for healthcheck support and readme updates for the change. Contributed by @maquis196. ([\#8147](matrix-org/synapse#8147))


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

- Link to matrix-synapse-rest-password-provider in the password provider documentation. ([\#8111](matrix-org/synapse#8111))
- Updated documentation to note that Synapse does not follow `HTTP 308` redirects due to an upstream library not supporting them. Contributed by Ryan Cole. ([\#8120](matrix-org/synapse#8120))
- Explain better what GDPR-erased means when deactivating a user. ([\#8189](matrix-org/synapse#8189))


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

- Add filter `name` to the `/users` admin API, which filters by user ID or displayname. Contributed by Awesome Technologies Innovationslabor GmbH. ([\#7377](matrix-org/synapse#7377), [\#8163](matrix-org/synapse#8163))
- Reduce run times of some unit tests by advancing the reactor a fewer number of times. ([\#7757](matrix-org/synapse#7757))
- Don't fail `/submit_token` requests on incorrect session ID if `request_token_inhibit_3pid_errors` is turned on. ([\#7991](matrix-org/synapse#7991))
- Convert various parts of the codebase to async/await. ([\#8071](matrix-org/synapse#8071), [\#8072](matrix-org/synapse#8072), [\#8074](matrix-org/synapse#8074), [\#8075](matrix-org/synapse#8075), [\#8076](matrix-org/synapse#8076), [\#8087](matrix-org/synapse#8087), [\#8100](matrix-org/synapse#8100), [\#8119](matrix-org/synapse#8119), [\#8121](matrix-org/synapse#8121), [\#8133](matrix-org/synapse#8133), [\#8156](matrix-org/synapse#8156), [\#8162](matrix-org/synapse#8162), [\#8166](matrix-org/synapse#8166), [\#8168](matrix-org/synapse#8168), [\#8173](matrix-org/synapse#8173), [\#8191](matrix-org/synapse#8191), [\#8192](matrix-org/synapse#8192), [\#8193](matrix-org/synapse#8193), [\#8194](matrix-org/synapse#8194), [\#8195](matrix-org/synapse#8195), [\#8197](matrix-org/synapse#8197), [\#8199](matrix-org/synapse#8199), [\#8200](matrix-org/synapse#8200), [\#8201](matrix-org/synapse#8201), [\#8202](matrix-org/synapse#8202), [\#8207](matrix-org/synapse#8207), [\#8213](matrix-org/synapse#8213), [\#8214](matrix-org/synapse#8214))
- Remove some unused database functions. ([\#8085](matrix-org/synapse#8085))
- Add type hints to various parts of the codebase. ([\#8090](matrix-org/synapse#8090), [\#8127](matrix-org/synapse#8127), [\#8187](matrix-org/synapse#8187), [\#8241](matrix-org/synapse#8241), [\#8140](matrix-org/synapse#8140), [\#8183](matrix-org/synapse#8183), [\#8232](matrix-org/synapse#8232), [\#8235](matrix-org/synapse#8235), [\#8237](matrix-org/synapse#8237), [\#8244](matrix-org/synapse#8244))
- Return the previous stream token if a non-member event is a duplicate. ([\#8093](matrix-org/synapse#8093), [\#8112](matrix-org/synapse#8112))
- Separate `get_current_token` into two since there are two different use cases for it. ([\#8113](matrix-org/synapse#8113))
- Remove `ChainedIdGenerator`. ([\#8123](matrix-org/synapse#8123))
- Reduce the amount of whitespace in JSON stored and sent in responses. ([\#8124](matrix-org/synapse#8124))
- Update the test federation client to handle streaming responses. ([\#8130](matrix-org/synapse#8130))
- Micro-optimisations to `get_auth_chain_ids`. ([\#8132](matrix-org/synapse#8132))
- Refactor `StreamIdGenerator` and `MultiWriterIdGenerator` to have the same interface. ([\#8161](matrix-org/synapse#8161))
- Add functions to `MultiWriterIdGen` used by events stream. ([\#8164](matrix-org/synapse#8164), [\#8179](matrix-org/synapse#8179))
- Fix tests that were broken due to the merge of 1.19.1. ([\#8167](matrix-org/synapse#8167))
- Make `SlavedIdTracker.advance` have the same interface as `MultiWriterIDGenerator`. ([\#8171](matrix-org/synapse#8171))
- Remove unused `is_guest` parameter from, and add safeguard to, `MessageHandler.get_room_data`. ([\#8174](matrix-org/synapse#8174), [\#8181](matrix-org/synapse#8181))
- Standardize the mypy configuration. ([\#8175](matrix-org/synapse#8175))
- Refactor some of `LoginRestServlet`'s helper methods, and move them to `AuthHandler` for easier reuse. ([\#8182](matrix-org/synapse#8182))
- Fix `wait_for_stream_position` to allow multiple waiters on same stream ID. ([\#8196](matrix-org/synapse#8196))
- Make `MultiWriterIDGenerator` work for streams that use negative values. ([\#8203](matrix-org/synapse#8203))
- Refactor queries for device keys and cross-signatures. ([\#8204](matrix-org/synapse#8204), [\#8205](matrix-org/synapse#8205), [\#8222](matrix-org/synapse#8222), [\#8224](matrix-org/synapse#8224), [\#8225](matrix-org/synapse#8225), [\#8231](matrix-org/synapse#8231), [\#8233](matrix-org/synapse#8233), [\#8234](matrix-org/synapse#8234))
- Fix type hints for functions decorated with `@cached`. ([\#8240](matrix-org/synapse#8240))
- Remove obsolete `order` field from federation send queues. ([\#8245](matrix-org/synapse#8245))
- Stop sub-classing from object. ([\#8249](matrix-org/synapse#8249))
- Add more logging to debug slow startup. ([\#8264](matrix-org/synapse#8264))
- Do not attempt to upgrade database schema on worker processes. ([\#8266](matrix-org/synapse#8266), [\#8276](matrix-org/synapse#8276))
babolivier pushed a commit that referenced this pull request Sep 1, 2021
@anoadragon453
Merge commit '56efa9ec7' into anoa/dinsic_release_1_21_x
b7bb088 
* commit '56efa9ec7': (22 commits)
  Fix rate limiting unit tests. (#8167)
  Add functions to `MultiWriterIdGen` used by events stream (#8164)
  Do not allow send_nonmember_event to be called with shadow-banned users. (#8158)
  Changelog fixes
  Make StreamIdGen `get_next` and `get_next_mult` async  (#8161)
  Wording fixes to 'name' user admin api filter (#8163)
  Fix missing double-backtick in RST document
  Search in columns 'name' and 'displayname' in the admin users endpoint (#7377)
  Add type hints for state. (#8140)
  Stop shadow-banned users from sending non-member events. (#8142)
  Allow capping a room's retention policy (#8104)
  Add healthcheck for default localhost 8008 port on /health endpoint. (#8147)
  Fix flaky shadow-ban tests. (#8152)
  Don't fail /submit_token requests on incorrect session ID if request_token_inhibit_3pid_errors is turned on (#7991)
  Do not apply ratelimiting on joins to appservices (#8139)
  Micro-optimisations to get_auth_chain_ids (#8132)
  Allow denying or shadow banning registrations via the spam checker (#8034)
  Stop shadow-banned users from sending invites. (#8095)
  Be more tolerant of membership events in unknown rooms (#8110)
  Improve the error code when trying to register using a name reserved for guests. (#8135)
  ...
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