Releases

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Synapse 1.30.1 released

2021-03-26 β€” Releases, Security β€” Dan Callahan

Synapse 1.30.1 is now available. This release is identical to Synapse 1.30.0, with the exception of explicitly setting a minimum version of the Python Cryptography library to ensure that users of Synapse are protected from yesterday's OpenSSL security advisories, especially CVE-2021-3449.

Note that Cryptography defaults to bundling its own statically linked copy of OpenSSL, which means that you may not be protected by your operating system's security updates.

It's also worth noting that Cryptography no longer supports Python 3.5, so admins deploying to older environments like Debian 9 (Stretch) or Ubuntu 16.04 (Xenial) may not be protected against this or future vulnerabilities.

The next release of Synapse will be the last to support Python 3.5.

Synapse 1.30.0 released

2021-03-22 β€” Releases β€” Dan Callahan

We've released Synapse 1.30.0!

A key theme of this release was stability and resilience around federation. We've landed changes to be less eager about entering catch up mode and to retry on HTTP 500 errors, while also rejecting transactions which arrive before we've completed processing earlier transactions from that same server. We've significantly optimized how we handle missing events when receiving incoming federation traffic, and we've found a way to re-use the chain cover index (from Synapse 1.26) when responding to the state_ids endpoint.

That last one turns out to be a pretty big deal: we've seen an order of magnitude improvement in both the CPU and DB cost of the state_ids endpoint. For example, the average CPU usage by that endpoint on matrix.org dropped from few seconds to well under 100ms:

CPU usage graph

Enjoy. πŸ™‚

This release also includes further improves to our SSO support, including allowing spam checkers to distinguish between new registrations and first-time SSO users and fixing account reactivation when local passwords are disabled. Now that MSC2858: Multiple SSO Identity Providers has passed its Final Comment Period, we've also updated Synapse to respond to the stable versions of endpoints introduced by that MSC.

See the Release Notes for further information.

πŸ”—Python / Platform Deprecations

As a reminder, the next release of Synapse (1.31, scheduled for April 5th) will be the last to support Python 3.5 or PostgreSQL 9.5, both of which have reached their upstream end of life.

We will also cease building packages for Ubuntu 16.04 (Xenial) and Debian 9 (Stretch) at the same time.

πŸ”—Application Service Registration Changes

Note that Application Services must provide a type parameter with the value "m.login.application_service" when calling POST /_matrix/client/r0/register. Synapse currently allows registration without an explicit type, but this divergence from the spec will be resolved in a future release.

πŸ”—Thanks

Synapse is a Free and Open Source Software project, and we'd like to extend our thanks to everyone who contributed to this release, including dklimpel, ShadowJonathan, and tlvb.

Synapse 1.29.0 released

2021-03-08 β€” Releases β€” Dan Callahan
Last update: 2021-03-08 17:42

Synapse 1.29.0 is now available!

This release includes several useful new configuration options for administrators of federated home servers. In all cases, the defaults match Synapse's prior behavior.

  • AndrewFerr implemented include_profile_data_on_invite and allow_profile_lookup_over_federation which can limit disclosure of your users' profile information. These both default to True.
  • We've also implemented user_directory.prefer_local_users which weights users on the same homeserver higher in directory searches. This defaults to False.

Synapse is now easier to run in proxied environments, with tzyl implementing support for the NO_PROXY environment variable, as well as recognizing lowercase variants of that and related proxy variables.

Under the hood, we've been steadily improving our type hints, especially in light of the recent release of Twisted 21.2.0 which includes its own type annotations. We've also landed some improvements which reduce the amount of work Synapse does when presence is enabled and you join a room for the first time. Oh, and the media repository now regenerates missing thumbnails on demand.

Lastly, if you deploy Synapse behind a reverse proxy, Synapse now expects to receive an X-Forwarded-Proto header on incoming requests and will log a warning if it is missing. See the upgrade notes for more information. The full changelog has more information on what's in this release.

Synapse is a Free and Open Source Software project, and we'd like to extend our thanks to everyone who contributed to this release, including aaronraimist, AndrewFerr, dklimpel, ShadowJonathan, and tzyl.

Synapse 1.28.0 released

2021-02-25 β€” Releases β€” Dan Callahan

Synapse 1.28.0 is now available!

This release comes with several further improvements to the user experience of single sign-on and numerous bugfixes and stability improvements.

For admins, Synapse 1.28 adds a new Admin API for retrieving event context and implements new spam checker hooks which enable checking file uploads and remote downloads. We've also improved memory usage of media repository workers.

Lastly, we have marked an undocumented Admin API for deprecation. If any of your tools use /_synapse/admin/v1/users/<user_id> to get account information, please replace that with the V2 List Accounts API, which has been available since Synapse 1.7.0.

There are no special upgrade instructions for 1.28.0. See the full changelog for more details on what's in this release.

Synapse is a Free and Open Source Software project, and we'd like to extend our thanks to everyone who contributed to this release, including arya2331, auscompgeek, bubu, compu42, dklimpel, dykstranet, and shadowjonathan.

We'd also like to thank yoric for thoroughly reviewing and re-organizing the Synapse CONTRIBUTING.md file.

Synapse 1.27.0 released

2021-02-18 β€” Releases β€” Dan Callahan

Synapse 1.27.0 is now available!

We're especially proud of this release, as this is the version of Synapse that powered FOSDEM 2021 on Matrix. As such, our main focus was on stability, performance, and long-awaited support for social login.

πŸ”—What's New

To our surprise, nearly half of all people who created accounts on the FOSDEM homeserver did so via a social login method. Full support for those methods is included in Synapse 1.27.0, and already available for all users on the matrix.org homeserver.

We've also changed how we use Redis in larger deployments, making Synapse more resilient to lost connections and eliminating delays when restarting with multiple federation senders.

Our Server Admin APIs saw a few tweaks, including new APIs to query and delete forward extremities or list the current state of a room.

See the full changelog for more.

πŸ”—Breaking Changes for SSO

If you use Single Sign-On (SSO) via SAML, OAuth2, or OpenID Connect you must adjust your provider's configuration before upgrading to Synapse 1.27.0, as some endpoint URLs have changed. See the upgrading notes for more information.

πŸ”—Dropping ARMv7 Docker Images

We were unable to produce ARM-based Docker images for this release due to problems with cross-compilation. As a result, we have made the difficult decision to cease building 32-bit ARMv7 Docker images as part of our release process. We will resume publishing ARM64 images with the next Synapse release.

Users on ARMv7 platforms (most notably Raspberry Pis) should consider building images locally using Synapse's Dockerfile or switching to installing Synapse directly as a Python module. Users with Raspberry Pi 3's or newer also have the option of installing a 64-bit Linux distribution and using an ARM64 Docker image.

πŸ”—Thank you to our contributors

Synapse is a Free and Open Source Software project, and we'd like to extend our thanks to everyone who contributed to this release, including dklimpel, intelfx, jcgruenhage, Oliver-Hanikel, rht, and y-pankaj.

Synapse 1.26.0 released

2021-01-28 β€” Releases β€” Dan Callahan

Synapse 1.26.0 is now available!

Note: This release includes a new database schema version. If you need to roll back to Synapse 1.25.0, you will also need to follow the associated database downgrade instructions.

In addition to a truckload of refactoring and general improvements, Synapse 1.26.0 includes three major new features:

  1. A brand new algorithm for calculating the auth chain difference, which should dramatically improve worst case performance during state resolution (#8622).
  2. Initial support for enabling multiple OpenID Connect providers, paving the way for proper multi-provider social login workflows.
  3. A significant speed-up to redaction performance in large rooms.

It also brings several improvements to Admin APIs:

We've also made it possible to offload several additional APIs to worker processes, including read receipts and account data persistence, further improving Synapse's scalability.

See the full changelog for more.

Lastly, a reminder: we have deprecated Python 3.5 and PostgreSQL 9.5 and will cease support at the end of March. Due to deprecations in our Python tooling, we were unable to produce a binary package for Ubuntu 16.04 LTS (Xenial) in time for this release. We have resolved this for 1.27.

Synapse is a Free and Open Source Software project, and we'd like to extend our thanks to everyone who contributed to this release, including 0xflotus, chris-ruecker, dklimpel, emelie-qis, jerinjtitus, and tzyl.

Synapse 1.25.0 released

2021-01-13 β€” Releases β€” Dan Callahan

Synapse 1.25.0 is now available! With this release, we are deprecating Python 3.5 and PostgreSQL 9.5 and will cease producing binary packages for Debian 9 (Stretch) and Ubuntu 16.04 (Xenial) after a transition period which lasts through March 2021. See the changelog for further details.

We are also deprecating the Purge Room and Shutdown Room Admin APIs and will remove them in a future release. Please update your code to use the Delete Room Admin API instead.

Synapse 1.25.0 brings over a month's worth of improvements, including:

  • The ability for users to pick their own username when using Single Sign-On, right from within Synapse.
  • Support for async Python methods in custom spam checker modules.
  • New ways to restrict allowed IP address ranges for outgoing requests from Synapse.
  • Significantly faster v2 state resolution on rooms with large numbers of power level events, which are common in some types of bridged IRC rooms.

See the full changelog and upgrade notes for more.

Synapse is a Free and Open Source Software project, and we'd like to extend our thanks to everyone who contributed to this release, including @aaronraimist, @Bubu, @dklimpel, @edwargix, @fossterer, @jdreichmann, @jerinjtitus, and @MadLittleMods.

Synapse 1.24.0 and 1.23.1 released

2020-12-09 β€” Releases, Security β€” Dan Callahan

Synapse 1.24.0 is now available!

This release fixes a denial of service vulnerability (GHSA-hxmp-pqch-c8mm / CVE-2020-26257) in which a malicious homeserver could send malformed events into a room which would then break federation of that room.

This follows the disclosure of a denial of service vulnerability in OpenSSL (CVE-2020-1971). If you have installed Synapse from source, please ensure your host is up to date and then execute pip install 'cryptography>=3.3' inside your Synapse virtualenv.

We've also released Synapse 1.23.1 which includes that security fix and a small patch to maintain Python 3.5 compatibility. It is otherwise identical to 1.23.0. Note that Synapse 1.24.0 includes backwards incompatible changes which may affect a small number of users. See the notes on upgrading for more information.

Synapse 1.24.0 brings a pair of new Admin APIs, including a way to log in as users and to forcibly purge rooms when deleting them. We've also made numerous bug fixes and improvements to SSO support, especially around OpenID Connect and SAML providers.

This release includes an optional change to push notification badges: currently, the number in the badge is based on the count of rooms with unread messages. However, in some specialized cases you may want the badge to show the count of all unread messages, even if there are multiple unread messages in the same room. This behavior can now be toggled with a new configuration setting.

Additionally, for server admins, the deprecated /_matrix/client/*/admin Admin API endpoints have been removed. If you have tools which target these endpoints, please update them to use the /_synapse/admin URL prefix instead.

See the full changelog for more.

Installation instructions are available on GitHub, as is the v1.24.0 release tag.

Synapse is a Free and Open Source Software project, and we'd like to extend our thanks to everyone who contributed to this release, including @angdraug, @chagai95, @daenney, @dklimpel, @jordanbancino, @localguru, @nchamo, @ShadowJonathan, @TeFiLeDo, @tulir, and @waylon531.

Synapse 1.23.0 released

2020-11-18 β€” Releases β€” Dan Callahan

Reminder: On Monday, we will be announcing a denial of service vulnerability which affects Synapse versions prior to 1.20.0. If you have not upgraded recently, please do so.

Synapse 1.23.0 now available!

For Synapse admins, this release support generating structured logs via the standard logging configuration (#8607, #8685). This may require changing your synapse configuration; see the upgrade notes for more information.

We've also added many new Admin APIs, contributed by @dklimpel:

  • Add API to get information about uploaded media (#8647)
  • Add API for local user media statistics (#8700)
  • Make it possible to delete files that were not used for a defined time (#8519)
  • Split API for reported events into detail and list endpoints. This is a breaking change to #8217 which was introduced in Synapse v1.21.0. Those who already use this API should check their scripts (#8539)
  • Allow server admins to list users' notification pushers (#8610, #8689)

Lastly, Synapse 1.23.0 addresses some significant bugs, including regressions in the SQLite-to-PostgreSQL database porting script (#8729, #8730, #8755) and an issue which could prevent Synapse from recovering after losing its connection to its database (#8726). Synapse will also reject ACL modifications from clients which would otherwise cause a server to ban itself from a room (#8708).

Installation instructions are available on GitHub, as is the v1.23.0 release tag.

Synapse is a Free and Open Source Software project, and we'd like to extend our thanks to everyone who contributed to this release, including @chagai95 and @dklimpel.

The full changelog for 1.23.0 is as follows:

πŸ”—Synapse 1.23.0 (2020-11-18)

This release changes the way structured logging is configured. See the upgrade notes for details.

Note: We are aware of a trivially exploitable denial of service vulnerability in versions of Synapse prior to 1.20.0. Complete details will be disclosed on Monday, November 23rd. If you have not upgraded recently, please do so.

πŸ”—Bugfixes

  • Fix a dependency versioning bug in the Dockerfile that prevented Synapse from starting. (#8767)

πŸ”—Synapse 1.23.0rc1 (2020-11-13)

πŸ”—Features

  • Add a push rule that highlights when a jitsi conference is created in a room. (#8286)
  • Add an admin api to delete a single file or files that were not used for a defined time from server. Contributed by @dklimpel. (#8519)
  • Split admin API for reported events (GET /_synapse/admin/v1/event_reports) into detail and list endpoints. This is a breaking change to #8217 which was introduced in Synapse v1.21.0. Those who already use this API should check their scripts. Contributed by @dklimpel. (#8539)
  • Support generating structured logs via the standard logging configuration. (#8607, #8685)
  • Add an admin API to allow server admins to list users' pushers. Contributed by @dklimpel. (#8610, #8689)
  • Add an admin API GET /_synapse/admin/v1/users/<user_id>/media to get information about uploaded media. Contributed by @dklimpel. (#8647)
  • Add an admin API for local user media statistics. Contributed by @dklimpel. (#8700)
  • Add displayname to Shared-Secret Registration for admins. (#8722)

πŸ”—Bugfixes

  • Fix fetching of E2E cross signing keys over federation when only one of the master key and device signing key is cached already. (#8455)
  • Fix a bug where Synapse would blindly forward bad responses from federation to clients when retrieving profile information. (#8580)
  • Fix a bug where the account validity endpoint would silently fail if the user ID did not have an expiration time. It now returns a 400 error. (#8620)
  • Fix email notifications for invites without local state. (#8627)
  • Fix handling of invalid group IDs to return a 400 rather than log an exception and return a 500. (#8628)
  • Fix handling of User-Agent headers that are invalid UTF-8, which caused user agents of users to not get correctly recorded. (#8632)
  • Fix a bug in the joined_rooms admin API if the user has never joined any rooms. The bug was introduced, along with the API, in v1.21.0. (#8643)
  • Fix exception during handling multiple concurrent requests for remote media when using multiple media repositories. (#8682)
  • Fix bug that prevented Synapse from recovering after losing connection to the database. (#8726)
  • Fix bug where the /_synapse/admin/v1/send_server_notice API could send notices to non-notice rooms. (#8728)
  • Fix PostgreSQL port script fails when DB has no backfilled events. Broke in v1.21.0. (#8729)
  • Fix PostgreSQL port script to correctly handle foreign key constraints. Broke in v1.21.0. (#8730)
  • Fix PostgreSQL port script so that it can be run again after a failure. Broke in v1.21.0. (#8755)

πŸ”—Improved Documentation

  • Instructions for Azure AD in the OpenID Connect documentation. Contributed by peterk. (#8582)
  • Improve the sample configuration for single sign-on providers. (#8635)
  • Fix the filepath of Dex's example config and the link to Dex's Getting Started guide in the OpenID Connect docs. (#8657)
  • Note support for Python 3.9. (#8665)
  • Minor updates to docs on running tests. (#8666)
  • Interlink prometheus/grafana documentation. (#8667)
  • Notes on SSO logins and media_repository worker. (#8701)
  • Document experimental support for running multiple event persisters. (#8706)
  • Add information regarding the various sources of, and expected contributions to, Synapse's documentation to CONTRIBUTING.md. (#8714)
  • Migrate documentation docs/admin_api/event_reports to markdown. (#8742)
  • Add some helpful hints to the README for new Synapse developers. Contributed by @chagai95. (#8746)

πŸ”—Internal Changes

  • Optimise /createRoom with multiple invited users. (#8559)
  • Implement and use an @lru_cache decorator. (#8595)
  • Don't instantiate Requester directly. (#8614)
  • Type hints for RegistrationStore. (#8615)
  • Change schema to support access tokens belonging to one user but granting access to another. (#8616)
  • Remove unused OPTIONS handlers. (#8621)
  • Run mypy as part of the lint.sh script. (#8633)
  • Correct Synapse's PyPI package name in the OpenID Connect installation instructions. (#8634)
  • Catch exceptions during initialization of password_providers. Contributed by Nicolai SΓΈborg. (#8636)
  • Fix typos and spelling errors in the code. (#8639)
  • Reduce number of OpenTracing spans started. (#8640, #8668, #8670)
  • Add field total to device list in admin API. (#8644)
  • Add more type hints to the application services code. (#8655, #8693)
  • Tell Black to format code for Python 3.5. (#8664)
  • Don't pull event from DB when handling replication traffic. (#8669)
  • Abstract some invite-related code in preparation for landing knocking. (#8671, #8688)
  • Clarify representation of events in logfiles. (#8679)
  • Don't require hiredis package to be installed to run unit tests. (#8680)
  • Fix typing info on cache call signature to accept on_invalidate. (#8684)
  • Fail tests if they do not await coroutines. (#8690)
  • Improve start time by adding an index to e2e_cross_signing_keys.stream_id. (#8694)
  • Re-organize the structured logging code to separate the TCP transport handling from the JSON formatting. (#8697)
  • Use Python 3.8 in Docker images by default. (#8698)
  • Remove the "draft" status of the Room Details Admin API. (#8702)
  • Improve the error returned when a non-string displayname or avatar_url is used when updating a user's profile. (#8705)
  • Block attempts by clients to send server ACLs, or redactions of server ACLs, that would result in the local server being blocked from the room. (#8708)
  • Add metrics the allow the local sysadmin to track 3PID /requestToken requests. (#8712)
  • Consolidate duplicated lists of purged tables that are checked in tests. (#8713)
  • Add some mdui:UIInfo element examples for saml2_config in the homeserver config. (#8718)
  • Improve the error message returned when a remote server incorrectly sets the Content-Type header in response to a JSON request. (#8719)
  • Speed up repeated state resolutions on the same room by caching event ID to auth event ID lookups. (#8752)

Dendrite 0.3.0 released

2020-11-16 β€” Releases β€” Matthew Hodgson

Hi all,

Heads up that we just cut another beta release of Dendrite - now at 0.3.0!

This is a really fun release given almost all the changes are contributed from the wider community - so huge thanks to S7evinK, MayeulC and felix!

The main new feature is full Read Receipt support thanks to S7evinK, which makes an enormous perceptual improvement when using Dendrite - so especial thanks are due there :)

So, if you're interested in helping us test, please spin up a copy from https://github.com/matrix-org/dendrite and let us know how it goes - and if you're already running one, now is an excellent time to upgrade!

Full changelog (including 0.2.1, which we forgot to blog about) follows:

πŸ”—Dendrite 0.3.0 (2020-11-16)

πŸ”—Features

  • Read receipts (both inbound and outbound) are now supported (contributed by S7evinK)
  • Forgetting rooms is now supported (contributed by S7evinK)
  • The -version command line flag has been added (contributed by S7evinK)

πŸ”—Fixes

  • User accounts that contain the = character can now be registered
  • Backfilling should now work properly on rooms with world-readable history visibility (contributed by MayeulC)
  • The gjson dependency has been updated for correct JSON integer ranges
  • Some more client event fields have been marked as omit-when-empty (contributed by S7evinK)
  • The build.sh script has been updated to work properly on all POSIX platforms (contributed by felix)

πŸ”—Dendrite 0.2.1 (2020-10-22)

πŸ”—Fixes

  • Forward extremities are now calculated using only references from other extremities, rather than including outliers, which should fix cases where state can become corrupted (#1556)
  • Old state events will no longer be processed by the sync API as new, which should fix some cases where clients incorrectly believe they have joined or left rooms (#1548)
  • More SQLite database locking issues have been resolved in the latest events updater (#1554)
  • Internal HTTP API calls are now made using H2C (HTTP/2) in polylith mode, mitigating some potential head-of-line blocking issues (#1541)
  • Roomserver output events no longer incorrectly flag state rewrites (#1557)
  • Notification levels are now parsed correctly in power level events (gomatrixserverlib#228, contributed by Pestdoktor)
  • Invalid UTF-8 is now correctly rejected when making federation requests (gomatrixserverlib#229, contributed by Pestdoktor)