Fix newsfile.

The parse_integer was previously made to reject negative values by
default, but the documentation stated otherwise. This fixes the
documentation and also:

- Removes explicit negative=False parameters from call sites.
- Brings the negative default of parse_integer_from_args in alignment
  with parse_integer.

.github/workflows/docker.yml

@@ -72,7 +72,7 @@ jobs:
 
       - name: Build and push all platforms
         id: build-and-push
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           push: true
           labels: |

.github/workflows/docs-pr-netlify.yaml

@@ -14,7 +14,7 @@ jobs:
       # There's a 'download artifact' action, but it hasn't been updated for the workflow_run action
       # (https://github.com/actions/download-artifact/issues/60) so instead we get this mess:
       - name: 📥 Download artifact
-        uses: dawidd6/action-download-artifact@09f2f74827fd3a8607589e5ad7f9398816f540fe # v3.1.4
+        uses: dawidd6/action-download-artifact@bf251b5aa9c2f7eeb574a96ee720e24f801b7c11 # v6
         with:
           workflow: docs-pr.yaml
           run_id: ${{ github.event.workflow_run.id }}

.github/workflows/release-artifacts.yml

@@ -102,7 +102,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-20.04, macos-11]
+        os: [ubuntu-20.04, macos-12]
         arch: [x86_64, aarch64]
         # is_pr is a flag used to exclude certain jobs from the matrix on PRs.
         # It is not read by the rest of the workflow.
@@ -112,9 +112,9 @@ jobs:
         exclude:
           # Don't build macos wheels on PR CI.
           - is_pr: true
-            os: "macos-11"
+            os: "macos-12"
           # Don't build aarch64 wheels on mac.
-          - os: "macos-11"
+          - os: "macos-12"
             arch: aarch64
           # Don't build aarch64 wheels on PR CI.
           - is_pr: true
@@ -130,7 +130,7 @@ jobs:
           python-version: "3.x"
 
       - name: Install cibuildwheel
-        run: python -m pip install cibuildwheel==2.16.2
+        run: python -m pip install cibuildwheel==2.19.1
 
       - name: Set up QEMU to emulate aarch64
         if: matrix.arch == 'aarch64'

CHANGES.md

@@ -1,3 +1,12 @@
+# Synapse 1.109.0 (2024-06-18)
+
+### Internal Changes
+
+- Fix the building of binary wheels for macOS by switching to macOS 12 CI runners. ([\#17319](https://github.com/element-hq/synapse/issues/17319))
+
+
+
+
 # Synapse 1.109.0rc3 (2024-06-17)
 
 ### Bugfixes

Cargo.lock

@@ -444,9 +444,9 @@ dependencies = [
 
 [[package]]
 name = "regex"
-version = "1.10.4"
+version = "1.10.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c117dbdfde9c8308975b6a18d71f3f385c89461f7b3fb054288ecf2a2058ba4c"
+checksum = "b91213439dad192326a0d7c6ee3955910425f441d7038e0d6933b0aec5c4517f"
 dependencies = [
  "aho-corasick",
  "memchr",

README.rst

@@ -1,21 +1,34 @@
-=========================================================================
-Synapse |support| |development| |documentation| |license| |pypi| |python|
-=========================================================================
+.. image:: https://github.com/element-hq/product/assets/87339233/7abf477a-5277-47f3-be44-ea44917d8ed7
+   :height: 60px
 
-Synapse is an open-source `Matrix <https://matrix.org/>`_ homeserver written and
-maintained by the Matrix.org Foundation. We began rapid development in 2014,
-reaching v1.0.0 in 2019. Development on Synapse and the Matrix protocol itself continues
-in earnest today.
+===========================================================================================================
+Element Synapse - Matrix homeserver implementation |support| |development| |documentation| |license| |pypi| |python|
+===========================================================================================================
 
-Briefly, Matrix is an open standard for communications on the internet, supporting
-federation, encryption and VoIP. Matrix.org has more to say about the `goals of the
-Matrix project <https://matrix.org/docs/guides/introduction>`_, and the `formal specification
-<https://spec.matrix.org/>`_ describes the technical details.
+Synapse is an open source `Matrix <https://matrix.org>`_ homeserver
+implementation, written and maintained by `Element <https://element.io>`_.
+`Matrix <https://github.com/matrix-org>`_ is the open standard for
+secure and interoperable real time communications. You can directly run
+and manage the source code in this repository, available under an AGPL
+license. There is no support provided from Element unless you have a
+subscription.
+
+Subscription alternative
+------------------------
+
+Alternatively, for those that need an enterprise-ready solution, Element
+Server Suite (ESS) is `available as a subscription <https://element.io/pricing>`_.
+ESS builds on Synapse to offer a complete Matrix-based backend including the full
+`Admin Console product <https://element.io/enterprise-functionality/admin-console>`_,
+giving admins the power to easily manage an organization-wide
+deployment. It includes advanced identity management, auditing,
+moderation and data retention options as well as Long Term Support and
+SLAs. ESS can be used to support any Matrix-based frontend client.
 
 .. contents::
 
-Installing and configuration
-============================
+🛠️ Installing and configuration
+===============================
 
 The Synapse documentation describes `how to install Synapse <https://element-hq.github.io/synapse/latest/setup/installation.html>`_. We recommend using
 `Docker images <https://element-hq.github.io/synapse/latest/setup/installation.html#docker-images-and-ansible-playbooks>`_ or `Debian packages from Matrix.org
@@ -105,8 +118,8 @@ Following this advice ensures that even if an XSS is found in Synapse, the
 impact to other applications will be minimal.
 
 
-Testing a new installation
-==========================
+🧪 Testing a new installation
+============================
 
 The easiest way to try out your new Synapse installation is by connecting to it
 from a web client.
@@ -159,8 +172,20 @@ the form of::
 As when logging in, you will need to specify a "Custom server".  Specify your
 desired ``localpart`` in the 'User name' box.
 
-Troubleshooting and support
-===========================
+🎯 Troubleshooting and support
+=============================
+
+🚀 Professional support
+----------------------
+
+Enterprise quality support for Synapse including SLAs is available as part of an
+`Element Server Suite (ESS) <https://element.io/pricing>` subscription.
+
+If you are an existing ESS subscriber then you can raise a `support request <https://ems.element.io/support>`
+and access the `knowledge base <https://ems-docs.element.io>`.
+
+🤝 Community support
+-------------------
 
 The `Admin FAQ <https://element-hq.github.io/synapse/latest/usage/administration/admin_faq.html>`_
 includes tips on dealing with some common problems. For more details, see
@@ -176,8 +201,8 @@ issues for support requests, only for bug reports and feature requests.
 .. |docs| replace:: ``docs``
 .. _docs: docs
 
-Identity Servers
-================
+🪪 Identity Servers
+==================
 
 Identity servers have the job of mapping email addresses and other 3rd Party
 IDs (3PIDs) to Matrix user IDs, as well as verifying the ownership of 3PIDs
@@ -206,8 +231,8 @@ an email address with your account, or send an invite to another user via their
 email address.
 
 
-Development
-===========
+🛠️ Development
+==============
 
 We welcome contributions to Synapse from the community!
 The best place to get started is our
@@ -225,8 +250,8 @@ Alongside all that, join our developer community on Matrix:
 `#synapse-dev:matrix.org <https://matrix.to/#/#synapse-dev:matrix.org>`_, featuring real humans!
 
 
-.. |support| image:: https://img.shields.io/matrix/synapse:matrix.org?label=support&logo=matrix
-  :alt: (get support on #synapse:matrix.org)
+.. |support| image:: https://img.shields.io/badge/matrix-community%20support-success
+  :alt: (get community support in #synapse:matrix.org)
   :target: https://matrix.to/#/#synapse:matrix.org
 
 .. |development| image:: https://img.shields.io/matrix/synapse-dev:matrix.org?label=development&logo=matrix

changelog.d/17187.feature

@@ -0,0 +1 @@
+Add initial implementation of an experimental [MSC3575](https://github.com/matrix-org/matrix-spec-proposals/pull/3575) Sliding Sync `/sync` endpoint.

changelog.d/17198.misc

@@ -0,0 +1 @@
+Remove unused `expire_access_token` option in the Synapse Docker config file. Contributed by @AaronDewes.

changelog.d/17254.bugfix

@@ -0,0 +1 @@
+Fix searching for users with their exact localpart whose ID includes a hyphen.

changelog.d/17256.feature

@@ -0,0 +1 @@
+ Improve ratelimiting in Synapse (#17256).

changelog.d/17265.misc

@@ -0,0 +1 @@
+Use fully-qualified `PersistedEventPosition` when returning `RoomsForUser` to facilitate proper comparisons and `RoomStreamToken` generation.

changelog.d/17266.misc

@@ -0,0 +1 @@
+Add debug logging for when room keys are uploaded, including whether they are replacing other room keys.

changelog.d/17270.feature

@@ -0,0 +1 @@
+Add support for the unstable [MSC4151](https://github.com/matrix-org/matrix-spec-proposals/pull/4151) report room API.

changelog.d/17271.misc

@@ -0,0 +1 @@
+Handle OTK uploads off master.

changelog.d/17272.bugfix

@@ -0,0 +1 @@
+Fix wrong retention policy being used when filtering events.

changelog.d/17273.misc

@@ -0,0 +1 @@
+Don't try and resync devices for remote users whose servers are marked as down.

changelog.d/17275.bugfix

@@ -0,0 +1 @@
+Fix bug where OTKs were not always included in `/sync` response when using workers.

changelog.d/17276.feature

@@ -0,0 +1 @@
+Filter for public and empty rooms added to Admin-API [List Room API](https://element-hq.github.io/synapse/latest/admin_api/rooms.html#list-room-api).

changelog.d/17277.feature

@@ -0,0 +1 @@
+Add `is_dm` filtering to experimental [MSC3575](https://github.com/matrix-org/matrix-spec-proposals/pull/3575) Sliding Sync `/sync` endpoint.

changelog.d/17279.misc

@@ -0,0 +1 @@
+Re-organize Pydantic models and types used in handlers.

changelog.d/17281.feature

@@ -0,0 +1 @@
+Add `is_encrypted` filtering to experimental [MSC3575](https://github.com/matrix-org/matrix-spec-proposals/pull/3575) Sliding Sync `/sync` endpoint.

changelog.d/17282.feature

@@ -0,0 +1 @@
+Include user membership in events served to clients, per MSC4115.

changelog.d/17283.bugfix

@@ -0,0 +1 @@
+Fix a long-standing bug where an invalid 'from' parameter to [`/notifications`](https://spec.matrix.org/v1.10/client-server-api/#get_matrixclientv3notifications) would result in an Internal Server Error.

changelog.d/17284.feature

@@ -0,0 +1 @@
+Do not require user-interactive authentication for uploading cross-signing keys for the first time, per MSC3967.

changelog.d/17293.feature

@@ -0,0 +1 @@
+Add `stream_ordering` sort to experimental [MSC3575](https://github.com/matrix-org/matrix-spec-proposals/pull/3575) Sliding Sync `/sync` endpoint.

changelog.d/17294.feature

@@ -0,0 +1,2 @@
+`register_new_matrix_user` now supports a --password-file flag, which
+is useful for scripting.

changelog.d/17295.bugfix

@@ -0,0 +1 @@
+Fix edge case in `/sync` returning the wrong the state when using sharded event persisters.

changelog.d/17296.feature

@@ -0,0 +1 @@
+Add support for the unstable [MSC4151](https://github.com/matrix-org/matrix-spec-proposals/pull/4151) report room API.

changelog.d/17297.misc

@@ -0,0 +1 @@
+Bump `mypy` from 1.8.0 to 1.9.0.

changelog.d/17300.misc

@@ -0,0 +1 @@
+Expose the worker instance that persisted the event on `event.internal_metadata.instance_name`.

changelog.d/17301.bugfix

@@ -0,0 +1 @@
+Add initial implementation of an experimental [MSC3575](https://github.com/matrix-org/matrix-spec-proposals/pull/3575) Sliding Sync `/sync` endpoint.

changelog.d/17304.feature

@@ -0,0 +1,2 @@
+`register_new_matrix_user` now supports a --exists-ok flag to allow registration of users that already exist in the database.
+This is useful for scripts that bootstrap user accounts with initial passwords.

changelog.d/17308.doc

@@ -0,0 +1 @@
+Add missing quotes for example for `exclude_rooms_from_sync`.

changelog.d/17322.feature

@@ -0,0 +1 @@
+Add support for via query parameter from MSC415.

changelog.d/17324.misc

@@ -0,0 +1 @@
+Update the README with Element branding, improve headers and fix the #synapse:matrix.org support room link rendering.

changelog.d/17325.misc

@@ -0,0 +1 @@
+This is a changelog so tests will run.

changelog.d/17331.misc

@@ -0,0 +1 @@
+Change path of the experimental [MSC3575](https://github.com/matrix-org/matrix-spec-proposals/pull/3575) Sliding Sync implementation to `/org.matrix.simplified_msc3575/sync` since our simplified API is slightly incompatible with what's in the current MSC.

changelog.d/17339.misc

@@ -0,0 +1 @@
+Tidy up `parse_integer` docs and call sites to reflect the fact that they require non-negative integers by default, and bring `parse_integer_from_args` default in alignment. Contributed by Denis Kasak (@dkasak).

debian/changelog

@@ -1,3 +1,15 @@
+matrix-synapse-py3 (1.109.0+nmu1) UNRELEASED; urgency=medium
+
+  * `register_new_matrix_user` now supports a --password-file and a --exists-ok flag.
+
+ -- Synapse Packaging team <packages@matrix.org>  Tue, 18 Jun 2024 13:29:36 +0100
+
+matrix-synapse-py3 (1.109.0) stable; urgency=medium
+
+  * New synapse release 1.109.0.
+
+ -- Synapse Packaging team <packages@matrix.org>  Tue, 18 Jun 2024 09:45:15 +0000
+
 matrix-synapse-py3 (1.109.0~rc3) stable; urgency=medium
 
   * New synapse release 1.109.0rc3.

debian/register_new_matrix_user.ronn

@@ -31,8 +31,12 @@ A sample YAML file accepted by `register_new_matrix_user` is described below:
     Local part of the new user. Will prompt if omitted.
 
   * `-p`, `--password`:
-    New password for user. Will prompt if omitted. Supplying the password
-    on the command line is not recommended. Use the STDIN instead.
+    New password for user. Will prompt if this option and `--password-file` are omitted.
+    Supplying the password on the command line is not recommended.
+
+  * `--password-file`:
+    File containing the new password for user. If set, overrides `--password`.
+    This is a more secure alternative to specifying the password on the command line.
 
   * `-a`, `--admin`:
     Register new user as an admin. Will prompt if omitted.
@@ -44,6 +48,9 @@ A sample YAML file accepted by `register_new_matrix_user` is described below:
     Shared secret as defined in server config file. This is an optional
     parameter as it can be also supplied via the YAML file.
 
+  * `--exists-ok`:
+    Do not fail if the user already exists. The user account will be not updated in this case.
+
   * `server_url`:
     URL of the home server. Defaults to 'https://localhost:8448'.
 

docker/complement/conf/workers-shared-extra.yaml.j2

@@ -105,8 +105,6 @@ experimental_features:
   # Expose a room summary for public rooms
   msc3266_enabled: true
 
-  msc4115_membership_on_events: true
-
 server_notices:
   system_mxid_localpart: _server
   system_mxid_display_name: "Server Alert"

docker/conf/homeserver.yaml

@@ -176,7 +176,6 @@ app_service_config_files:
 {% endif %}
 
 macaroon_secret_key: "{{ SYNAPSE_MACAROON_SECRET_KEY }}"
-expire_access_token: False
 
 ## Signing Keys ##
 

docs/admin_api/rooms.md

@@ -36,6 +36,10 @@ The following query parameters are available:
   - the room's name,
   - the local part of the room's canonical alias, or
   - the complete (local and server part) room's id (case sensitive).
+* `public_rooms` - Optional flag to filter public rooms. If `true`, only public rooms are queried. If `false`, public rooms are excluded from
+  the query. When the flag is absent (the default), **both** public and non-public rooms are included in the search results.
+* `empty_rooms` - Optional flag to filter empty rooms. A room is empty if joined_members is zero. If `true`, only empty rooms are queried. If `false`, empty rooms are excluded from
+  the query. When the flag is absent (the default), **both** empty and non-empty rooms are included in the search results.
 
   Defaults to no filtering.
 

docs/usage/configuration/config_documentation.md

@@ -1946,6 +1946,24 @@ Example configuration:
 max_image_pixels: 35M
 ```
 ---
+### `remote_media_download_burst_count`
+
+Remote media downloads are ratelimited using a [leaky bucket algorithm](https://en.wikipedia.org/wiki/Leaky_bucket), where a given "bucket" is keyed to the IP address of the requester when requesting remote media downloads. This configuration option sets the size of the bucket against which the size in bytes of downloads are penalized - if the bucket is full, ie a given number of bytes have already been downloaded, further downloads will be denied until the bucket drains.  Defaults to 500MiB. See also `remote_media_download_per_second` which determines the rate at which the "bucket" is emptied and thus has available space to authorize new requests.  
+
+Example configuration:
+```yaml
+remote_media_download_burst_count: 200M
+```
+---
+### `remote_media_download_per_second`
+
+Works in conjunction with `remote_media_download_burst_count` to ratelimit remote media downloads - this configuration option determines the rate at which the "bucket" (see above) leaks in bytes per second. As requests are made to download remote media, the size of those requests in bytes is added to the bucket, and once the bucket has reached it's capacity, no more requests will be allowed until a number of bytes has "drained" from the bucket. This setting determines the rate at which bytes drain from the bucket, with the practical effect that the larger the number, the faster the bucket leaks, allowing for more bytes downloaded over a shorter period of time. Defaults to 87KiB per second. See also `remote_media_download_burst_count`.
+
+Example configuration:
+```yaml
+remote_media_download_per_second: 40K
+```
+---
 ### `prevent_media_downloads_from`
 
 A list of domains to never download media from. Media from these
@@ -4132,7 +4150,7 @@ By default, no room is excluded.
 Example configuration:
 ```yaml
 exclude_rooms_from_sync:
-    - !foo:example.com
+    - "!foo:example.com"
 ```
 
 ---

poetry.lock

@@ -912,13 +912,13 @@ trio = ["async_generator", "trio"]
 
 [[package]]
 name = "jinja2"
-version = "3.1.3"
+version = "3.1.4"
 description = "A very fast and expressive template engine."
 optional = false
 python-versions = ">=3.7"
 files = [
-    {file = "Jinja2-3.1.3-py3-none-any.whl", hash = "sha256:7d6d50dd97d52cbc355597bd845fabfbac3f551e1f99619e39a35ce8c370b5fa"},
-    {file = "Jinja2-3.1.3.tar.gz", hash = "sha256:ac8bd6544d4bb2c9792bf3a159e80bba8fda7f07e81bc3aed565432d5925ba90"},
+    {file = "jinja2-3.1.4-py3-none-any.whl", hash = "sha256:bc5dd2abb727a5319567b7a813e6a2e7318c39f4f487cfe6c89c6f9c7d25197d"},
+    {file = "jinja2-3.1.4.tar.gz", hash = "sha256:4a3aee7acbbe7303aede8e9648d13b8bf88a429282aa6122a993f0ac800cb369"},
 ]
 
 [package.dependencies]
@@ -1319,103 +1319,103 @@ files = [
 
 [[package]]
 name = "msgpack"
-version = "1.0.7"
+version = "1.0.8"
 description = "MessagePack serializer"
 optional = false
 python-versions = ">=3.8"
 files = [
-    {file = "msgpack-1.0.7-cp310-cp310-macosx_10_9_universal2.whl", hash = "sha256:04ad6069c86e531682f9e1e71b71c1c3937d6014a7c3e9edd2aa81ad58842862"},
-    {file = "msgpack-1.0.7-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:cca1b62fe70d761a282496b96a5e51c44c213e410a964bdffe0928e611368329"},
-    {file = "msgpack-1.0.7-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:e50ebce52f41370707f1e21a59514e3375e3edd6e1832f5e5235237db933c98b"},
-    {file = "msgpack-1.0.7-cp310-cp310-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:4a7b4f35de6a304b5533c238bee86b670b75b03d31b7797929caa7a624b5dda6"},
-    {file = "msgpack-1.0.7-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:28efb066cde83c479dfe5a48141a53bc7e5f13f785b92ddde336c716663039ee"},
-    {file = "msgpack-1.0.7-cp310-cp310-manylinux_2_5_i686.manylinux1_i686.manylinux_2_17_i686.manylinux2014_i686.whl", hash = "sha256:4cb14ce54d9b857be9591ac364cb08dc2d6a5c4318c1182cb1d02274029d590d"},
-    {file = "msgpack-1.0.7-cp310-cp310-musllinux_1_1_aarch64.whl", hash = "sha256:b573a43ef7c368ba4ea06050a957c2a7550f729c31f11dd616d2ac4aba99888d"},
-    {file = "msgpack-1.0.7-cp310-cp310-musllinux_1_1_i686.whl", hash = "sha256:ccf9a39706b604d884d2cb1e27fe973bc55f2890c52f38df742bc1d79ab9f5e1"},
-    {file = "msgpack-1.0.7-cp310-cp310-musllinux_1_1_x86_64.whl", hash = "sha256:cb70766519500281815dfd7a87d3a178acf7ce95390544b8c90587d76b227681"},
-    {file = "msgpack-1.0.7-cp310-cp310-win32.whl", hash = "sha256:b610ff0f24e9f11c9ae653c67ff8cc03c075131401b3e5ef4b82570d1728f8a9"},
-    {file = "msgpack-1.0.7-cp310-cp310-win_amd64.whl", hash = "sha256:a40821a89dc373d6427e2b44b572efc36a2778d3f543299e2f24eb1a5de65415"},
-    {file = "msgpack-1.0.7-cp311-cp311-macosx_10_9_universal2.whl", hash = "sha256:576eb384292b139821c41995523654ad82d1916da6a60cff129c715a6223ea84"},
-    {file = "msgpack-1.0.7-cp311-cp311-macosx_10_9_x86_64.whl", hash = "sha256:730076207cb816138cf1af7f7237b208340a2c5e749707457d70705715c93b93"},
-    {file = "msgpack-1.0.7-cp311-cp311-macosx_11_0_arm64.whl", hash = "sha256:85765fdf4b27eb5086f05ac0491090fc76f4f2b28e09d9350c31aac25a5aaff8"},
-    {file = "msgpack-1.0.7-cp311-cp311-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:3476fae43db72bd11f29a5147ae2f3cb22e2f1a91d575ef130d2bf49afd21c46"},
-    {file = "msgpack-1.0.7-cp311-cp311-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:6d4c80667de2e36970ebf74f42d1088cc9ee7ef5f4e8c35eee1b40eafd33ca5b"},
-    {file = "msgpack-1.0.7-cp311-cp311-manylinux_2_5_i686.manylinux1_i686.manylinux_2_17_i686.manylinux2014_i686.whl", hash = "sha256:5b0bf0effb196ed76b7ad883848143427a73c355ae8e569fa538365064188b8e"},
-    {file = "msgpack-1.0.7-cp311-cp311-musllinux_1_1_aarch64.whl", hash = "sha256:f9a7c509542db4eceed3dcf21ee5267ab565a83555c9b88a8109dcecc4709002"},
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+    {file = "mypy-1.9.0.tar.gz", hash = "sha256:3cc5da0127e6a478cddd906068496a97a7618a21ce9b54bde5bf7e539c7af974"},
 ]
 
 [package.dependencies]
@@ -1524,13 +1524,13 @@ files = [
 
 [[package]]
 name = "phonenumbers"
-version = "8.13.37"
+version = "8.13.39"
 description = "Python version of Google's common library for parsing, formatting, storing and validating international phone numbers."
 optional = false
 python-versions = "*"
 files = [
-    {file = "phonenumbers-8.13.37-py2.py3-none-any.whl", hash = "sha256:4ea00ef5012422c08c7955c21131e7ae5baa9a3ef52cf2d561e963f023006b80"},
-    {file = "phonenumbers-8.13.37.tar.gz", hash = "sha256:bd315fed159aea0516f7c367231810fe8344d5bec26156b88fa18374c11d1cf2"},
+    {file = "phonenumbers-8.13.39-py2.py3-none-any.whl", hash = "sha256:3ad2d086fa71e7eef409001b9195ac54bebb0c6e3e752209b558ca192c9229a0"},
+    {file = "phonenumbers-8.13.39.tar.gz", hash = "sha256:db7ca4970d206b2056231105300753b1a5b229f43416f8c2b3010e63fbb68d77"},
 ]
 
 [[package]]
@@ -2387,13 +2387,13 @@ doc = ["Sphinx", "sphinx-rtd-theme"]
 
 [[package]]
 name = "sentry-sdk"
-version = "2.1.1"
+version = "2.3.1"
 description = "Python client for Sentry (https://sentry.io)"
 optional = true
 python-versions = ">=3.6"
 files = [
-    {file = "sentry_sdk-2.1.1-py2.py3-none-any.whl", hash = "sha256:99aeb78fb76771513bd3b2829d12613130152620768d00cd3e45ac00cb17950f"},
-    {file = "sentry_sdk-2.1.1.tar.gz", hash = "sha256:95d8c0bb41c8b0bc37ab202c2c4a295bb84398ee05f4cdce55051cd75b926ec1"},
+    {file = "sentry_sdk-2.3.1-py2.py3-none-any.whl", hash = "sha256:c5aeb095ba226391d337dd42a6f9470d86c9fc236ecc71cfc7cd1942b45010c6"},
+    {file = "sentry_sdk-2.3.1.tar.gz", hash = "sha256:139a71a19f5e9eb5d3623942491ce03cf8ebc14ea2e39ba3e6fe79560d8a5b1f"},
 ]
 
 [package.dependencies]
@@ -2415,7 +2415,7 @@ django = ["django (>=1.8)"]
 falcon = ["falcon (>=1.4)"]
 fastapi = ["fastapi (>=0.79.0)"]
 flask = ["blinker (>=1.1)", "flask (>=0.11)", "markupsafe"]
-grpcio = ["grpcio (>=1.21.1)"]
+grpcio = ["grpcio (>=1.21.1)", "protobuf (>=3.8.0)"]
 httpx = ["httpx (>=0.16.0)"]
 huey = ["huey (>=2)"]
 huggingface-hub = ["huggingface-hub (>=0.22)"]
@@ -2808,13 +2808,13 @@ files = [
 
 [[package]]
 name = "types-jsonschema"
-version = "4.21.0.20240311"
+version = "4.22.0.20240610"
 description = "Typing stubs for jsonschema"
 optional = false
 python-versions = ">=3.8"
 files = [
-    {file = "types-jsonschema-4.21.0.20240311.tar.gz", hash = "sha256:f7165ce70abd91df490c73b089873afd2899c5e56430ee495b64f851ad01f287"},
-    {file = "types_jsonschema-4.21.0.20240311-py3-none-any.whl", hash = "sha256:e872f5661513824edf9698f73a66c9c114713d93eab58699bd0532e7e6db5750"},
+    {file = "types-jsonschema-4.22.0.20240610.tar.gz", hash = "sha256:f82ab9fe756e3a2642ea9712c46b403ce61eb380b939b696cff3252af42f65b0"},
+    {file = "types_jsonschema-4.22.0.20240610-py3-none-any.whl", hash = "sha256:89996b9bd1928f820a0e252b2844be21cd2e55d062b6fa1048d88453006ad89e"},
 ]
 
 [package.dependencies]
@@ -2822,13 +2822,13 @@ referencing = "*"
 
 [[package]]
 name = "types-netaddr"
-version = "1.2.0.20240219"
+version = "1.3.0.20240530"
 description = "Typing stubs for netaddr"
 optional = false
 python-versions = ">=3.8"
 files = [
-    {file = "types-netaddr-1.2.0.20240219.tar.gz", hash = "sha256:984e70ad838218d3032f37f05a7e294f7b007fe274ec9d774265c8c06698395f"},
-    {file = "types_netaddr-1.2.0.20240219-py3-none-any.whl", hash = "sha256:b26144e878acb8a1a9008e6997863714db04f8029a0f7f6bfe483c977d21b522"},
+    {file = "types-netaddr-1.3.0.20240530.tar.gz", hash = "sha256:742c2ec1f202b666f544223e2616b34f1f13df80c91e5aeaaa93a72e4d0774ea"},
+    {file = "types_netaddr-1.3.0.20240530-py3-none-any.whl", hash = "sha256:354998d018e326da4f1d9b005fc91137b7c2c473aaf03c4ef64bf83c6861b440"},
 ]
 
 [[package]]
@@ -2844,13 +2844,13 @@ files = [
 
 [[package]]
 name = "types-pillow"
-version = "10.2.0.20240423"
+version = "10.2.0.20240520"
 description = "Typing stubs for Pillow"
 optional = false
 python-versions = ">=3.8"
 files = [
-    {file = "types-Pillow-10.2.0.20240423.tar.gz", hash = "sha256:696e68b9b6a58548fc307a8669830469237c5b11809ddf978ac77fafa79251cd"},
-    {file = "types_Pillow-10.2.0.20240423-py3-none-any.whl", hash = "sha256:bd12923093b96c91d523efcdb66967a307f1a843bcfaf2d5a529146c10a9ced3"},
+    {file = "types-Pillow-10.2.0.20240520.tar.gz", hash = "sha256:130b979195465fa1e1676d8e81c9c7c30319e8e95b12fae945e8f0d525213107"},
+    {file = "types_Pillow-10.2.0.20240520-py3-none-any.whl", hash = "sha256:33c36494b380e2a269bb742181bea5d9b00820367822dbd3760f07210a1da23d"},
 ]
 
 [[package]]
@@ -2881,13 +2881,13 @@ types-cffi = "*"
 
 [[package]]
 name = "types-pyyaml"
-version = "6.0.12.12"
+version = "6.0.12.20240311"
 description = "Typing stubs for PyYAML"
 optional = false
-python-versions = "*"
+python-versions = ">=3.8"
 files = [
-    {file = "types-PyYAML-6.0.12.12.tar.gz", hash = "sha256:334373d392fde0fdf95af5c3f1661885fa10c52167b14593eb856289e1855062"},
-    {file = "types_PyYAML-6.0.12.12-py3-none-any.whl", hash = "sha256:c05bc6c158facb0676674b7f11fe3960db4f389718e19e62bd2b84d6205cfd24"},
+    {file = "types-PyYAML-6.0.12.20240311.tar.gz", hash = "sha256:a9e0f0f88dc835739b0c1ca51ee90d04ca2a897a71af79de9aec5f38cb0a5342"},
+    {file = "types_PyYAML-6.0.12.20240311-py3-none-any.whl", hash = "sha256:b845b06a1c7e54b8e5b4c683043de0d9caf205e7434b3edc678ff2411979b8f6"},
 ]
 
 [[package]]

pyproject.toml

@@ -96,7 +96,7 @@ module-name = "synapse.synapse_rust"
 
 [tool.poetry]
 name = "matrix-synapse"
-version = "1.109.0rc3"
+version = "1.109.0"
 description = "Homeserver for the Matrix decentralised comms protocol"
 authors = ["Matrix.org Team and Contributors <packages@matrix.org>"]
 license = "AGPL-3.0-or-later"

rust/src/events/internal_metadata.rs

@@ -204,6 +204,8 @@ pub struct EventInternalMetadata {
     /// The stream ordering of this event. None, until it has been persisted.
     #[pyo3(get, set)]
     stream_ordering: Option<NonZeroI64>,
+    #[pyo3(get, set)]
+    instance_name: Option<String>,
 
     /// whether this event is an outlier (ie, whether we have the state at that
     /// point in the DAG)
@@ -232,6 +234,7 @@ impl EventInternalMetadata {
         Ok(EventInternalMetadata {
             data,
             stream_ordering: None,
+            instance_name: None,
             outlier: false,
         })
     }

scripts-dev/complement.sh

@@ -223,7 +223,6 @@ test_packages=(
     ./tests/msc3930
     ./tests/msc3902
     ./tests/msc3967
-    ./tests/msc4115
 )
 
 # Enable dirty runs, so tests will reuse the same container where possible.

synapse/_scripts/register_new_matrix_user.py

@@ -52,6 +52,7 @@ def request_registration(
     user_type: Optional[str] = None,
     _print: Callable[[str], None] = print,
     exit: Callable[[int], None] = sys.exit,
+    exists_ok: bool = False,
 ) -> None:
     url = "%s/_synapse/admin/v1/register" % (server_location.rstrip("/"),)
 
@@ -97,6 +98,10 @@ def request_registration(
     r = requests.post(url, json=data)
 
     if r.status_code != 200:
+        response = r.json()
+        if exists_ok and response["errcode"] == "M_USER_IN_USE":
+            _print("User already exists. Skipping.")
+            return
         _print("ERROR! Received %d %s" % (r.status_code, r.reason))
         if 400 <= r.status_code < 500:
             try:
@@ -115,6 +120,7 @@ def register_new_user(
     shared_secret: str,
     admin: Optional[bool],
     user_type: Optional[str],
+    exists_ok: bool = False,
 ) -> None:
     if not user:
         try:
@@ -154,7 +160,13 @@ def register_new_user(
             admin = False
 
     request_registration(
-        user, password, server_location, shared_secret, bool(admin), user_type
+        user,
+        password,
+        server_location,
+        shared_secret,
+        bool(admin),
+        user_type,
+        exists_ok=exists_ok,
     )
 
 
@@ -174,10 +186,22 @@ def main() -> None:
         help="Local part of the new user. Will prompt if omitted.",
     )
     parser.add_argument(
+        "--exists-ok",
+        action="store_true",
+        help="Do not fail if user already exists.",
+    )
+    password_group = parser.add_mutually_exclusive_group()
+    password_group.add_argument(
         "-p",
         "--password",
         default=None,
-        help="New password for user. Will prompt if omitted.",
+        help="New password for user. Will prompt for a password if "
+        "this flag and `--password-file` are both omitted.",
+    )
+    password_group.add_argument(
+        "--password-file",
+        default=None,
+        help="File containing the new password for user. If set, will override `--password`.",
     )
     parser.add_argument(
         "-t",
@@ -185,6 +209,7 @@ def main() -> None:
         default=None,
         help="User type as specified in synapse.api.constants.UserTypes",
     )
+
     admin_group = parser.add_mutually_exclusive_group()
     admin_group.add_argument(
         "-a",
@@ -247,6 +272,11 @@ def main() -> None:
             print(_NO_SHARED_SECRET_OPTS_ERROR, file=sys.stderr)
             sys.exit(1)
 
+    if args.password_file:
+        password = _read_file(args.password_file, "password-file").strip()
+    else:
+        password = args.password
+
     if args.server_url:
         server_url = args.server_url
     elif config is not None:
@@ -270,7 +300,13 @@ def main() -> None:
         admin = args.admin
 
     register_new_user(
-        args.user, args.password, server_url, secret, admin, args.user_type
+        args.user,
+        password,
+        server_url,
+        secret,
+        admin,
+        args.user_type,
+        exists_ok=args.exists_ok,
     )
 
 

synapse/api/constants.py

@@ -50,7 +50,7 @@ class Membership:
     KNOCK: Final = "knock"
     LEAVE: Final = "leave"
     BAN: Final = "ban"
-    LIST: Final = (INVITE, JOIN, KNOCK, LEAVE, BAN)
+    LIST: Final = {INVITE, JOIN, KNOCK, LEAVE, BAN}
 
 
 class PresenceState:
@@ -238,7 +238,7 @@ class EventUnsignedContentFields:
     """Fields found inside the 'unsigned' data on events"""
 
     # Requesting user's membership, per MSC4115
-    MSC4115_MEMBERSHIP: Final = "io.element.msc4115.membership"
+    MEMBERSHIP: Final = "membership"
 
 
 class RoomTypes:

synapse/config/experimental.py

@@ -393,9 +393,6 @@ class ExperimentalConfig(Config):
         # MSC3391: Removing account data.
         self.msc3391_enabled = experimental.get("msc3391_enabled", False)
 
-        # MSC3967: Do not require UIA when first uploading cross signing keys
-        self.msc3967_enabled = experimental.get("msc3967_enabled", False)
-
         # MSC3861: Matrix architecture change to delegate authentication via OIDC
         try:
             self.msc3861 = MSC3861(**experimental.get("msc3861", {}))
@@ -436,10 +433,12 @@ class ExperimentalConfig(Config):
                 ("experimental", "msc4108_delegation_endpoint"),
             )
 
-        self.msc4115_membership_on_events = experimental.get(
-            "msc4115_membership_on_events", False
-        )
-
         self.msc3916_authenticated_media_enabled = experimental.get(
             "msc3916_authenticated_media_enabled", False
         )
+
+        # MSC4151: Report room API (Client-Server API)
+        self.msc4151_enabled: bool = experimental.get("msc4151_enabled", False)
+
+        # MSC4156: Migrate server_name to via
+        self.msc4156_enabled: bool = experimental.get("msc4156_enabled", False)

synapse/config/ratelimiting.py

@@ -218,3 +218,13 @@ class RatelimitConfig(Config):
             "rc_media_create",
             defaults={"per_second": 10, "burst_count": 50},
         )
+
+        self.remote_media_downloads = RatelimitSettings(
+            key="rc_remote_media_downloads",
+            per_second=self.parse_size(
+                config.get("remote_media_download_per_second", "87K")
+            ),
+            burst_count=self.parse_size(
+                config.get("remote_media_download_burst_count", "500M")
+            ),
+        )

synapse/events/utils.py

@@ -90,6 +90,7 @@ def prune_event(event: EventBase) -> EventBase:
     pruned_event.internal_metadata.stream_ordering = (
         event.internal_metadata.stream_ordering
     )
+    pruned_event.internal_metadata.instance_name = event.internal_metadata.instance_name
     pruned_event.internal_metadata.outlier = event.internal_metadata.outlier
 
     # Mark the event as redacted
@@ -116,6 +117,7 @@ def clone_event(event: EventBase) -> EventBase:
     new_event.internal_metadata.stream_ordering = (
         event.internal_metadata.stream_ordering
     )
+    new_event.internal_metadata.instance_name = event.internal_metadata.instance_name
     new_event.internal_metadata.outlier = event.internal_metadata.outlier
 
     return new_event

synapse/events/validator.py

@@ -47,9 +47,9 @@ from synapse.events.utils import (
     validate_canonicaljson,
 )
 from synapse.http.servlet import validate_json_object
-from synapse.rest.models import RequestBodyModel
 from synapse.storage.controllers.state import server_acl_evaluator_from_event
 from synapse.types import EventID, JsonDict, RoomID, StrCollection, UserID
+from synapse.types.rest import RequestBodyModel
 
 
 class EventValidator:

synapse/federation/federation_client.py

@@ -56,6 +56,7 @@ from synapse.api.errors import (
     SynapseError,
     UnsupportedRoomVersionError,
 )
+from synapse.api.ratelimiting import Ratelimiter
 from synapse.api.room_versions import (
     KNOWN_ROOM_VERSIONS,
     EventFormatVersions,
@@ -1877,6 +1878,8 @@ class FederationClient(FederationBase):
         output_stream: BinaryIO,
         max_size: int,
         max_timeout_ms: int,
+        download_ratelimiter: Ratelimiter,
+        ip_address: str,
     ) -> Tuple[int, Dict[bytes, List[bytes]]]:
         try:
             return await self.transport_layer.download_media_v3(
@@ -1885,6 +1888,8 @@ class FederationClient(FederationBase):
                 output_stream=output_stream,
                 max_size=max_size,
                 max_timeout_ms=max_timeout_ms,
+                download_ratelimiter=download_ratelimiter,
+                ip_address=ip_address,
             )
         except HttpResponseException as e:
             # If an error is received that is due to an unrecognised endpoint,
@@ -1905,6 +1910,8 @@ class FederationClient(FederationBase):
             output_stream=output_stream,
             max_size=max_size,
             max_timeout_ms=max_timeout_ms,
+            download_ratelimiter=download_ratelimiter,
+            ip_address=ip_address,
         )
 
 

synapse/federation/federation_server.py

@@ -674,7 +674,7 @@ class FederationServer(FederationBase):
         # This is in addition to the HS-level rate limiting applied by
         # BaseFederationServlet.
         # type-ignore: mypy doesn't seem able to deduce the type of the limiter(!?)
-        await self._room_member_handler._join_rate_per_room_limiter.ratelimit(  # type: ignore[has-type]
+        await self._room_member_handler._join_rate_per_room_limiter.ratelimit(
             requester=None,
             key=room_id,
             update=False,
@@ -717,7 +717,7 @@ class FederationServer(FederationBase):
             SynapseTags.SEND_JOIN_RESPONSE_IS_PARTIAL_STATE,
             caller_supports_partial_state,
         )
-        await self._room_member_handler._join_rate_per_room_limiter.ratelimit(  # type: ignore[has-type]
+        await self._room_member_handler._join_rate_per_room_limiter.ratelimit(
             requester=None,
             key=room_id,
             update=False,

synapse/federation/transport/client.py

@@ -43,6 +43,7 @@ import ijson
 
 from synapse.api.constants import Direction, Membership
 from synapse.api.errors import Codes, HttpResponseException, SynapseError
+from synapse.api.ratelimiting import Ratelimiter
 from synapse.api.room_versions import RoomVersion
 from synapse.api.urls import (
     FEDERATION_UNSTABLE_PREFIX,
@@ -819,6 +820,8 @@ class TransportLayerClient:
         output_stream: BinaryIO,
         max_size: int,
         max_timeout_ms: int,
+        download_ratelimiter: Ratelimiter,
+        ip_address: str,
     ) -> Tuple[int, Dict[bytes, List[bytes]]]:
         path = f"/_matrix/media/r0/download/{destination}/{media_id}"
 
@@ -834,6 +837,8 @@ class TransportLayerClient:
                 "allow_remote": "false",
                 "timeout_ms": str(max_timeout_ms),
             },
+            download_ratelimiter=download_ratelimiter,
+            ip_address=ip_address,
         )
 
     async def download_media_v3(
@@ -843,6 +848,8 @@ class TransportLayerClient:
         output_stream: BinaryIO,
         max_size: int,
         max_timeout_ms: int,
+        download_ratelimiter: Ratelimiter,
+        ip_address: str,
     ) -> Tuple[int, Dict[bytes, List[bytes]]]:
         path = f"/_matrix/media/v3/download/{destination}/{media_id}"
 
@@ -862,6 +869,8 @@ class TransportLayerClient:
                 "allow_redirect": "true",
             },
             follow_redirects=True,
+            download_ratelimiter=download_ratelimiter,
+            ip_address=ip_address,
         )
 
 

synapse/handlers/admin.py

@@ -42,7 +42,6 @@ class AdminHandler:
         self._device_handler = hs.get_device_handler()
         self._storage_controllers = hs.get_storage_controllers()
         self._state_storage_controller = self._storage_controllers.state
-        self._hs_config = hs.config
         self._msc3866_enabled = hs.config.experimental.msc3866.enabled
 
     async def get_whois(self, user: UserID) -> JsonMapping:
@@ -126,13 +125,7 @@ class AdminHandler:
         # Get all rooms the user is in or has been in
         rooms = await self._store.get_rooms_for_local_user_where_membership_is(
             user_id,
-            membership_list=(
-                Membership.JOIN,
-                Membership.LEAVE,
-                Membership.BAN,
-                Membership.INVITE,
-                Membership.KNOCK,
-            ),
+            membership_list=Membership.LIST,
         )
 
         # We only try and fetch events for rooms the user has been in. If
@@ -179,7 +172,7 @@ class AdminHandler:
             if room.membership == Membership.JOIN:
                 stream_ordering = self._store.get_room_max_stream_ordering()
             else:
-                stream_ordering = room.stream_ordering
+                stream_ordering = room.event_pos.stream
 
             from_key = RoomStreamToken(topological=0, stream=0)
             to_key = RoomStreamToken(stream=stream_ordering)
@@ -221,7 +214,6 @@ class AdminHandler:
                     self._storage_controllers,
                     user_id,
                     events,
-                    msc4115_membership_on_events=self._hs_config.experimental.msc4115_membership_on_events,
                 )
 
                 writer.write_events(room_id, events)

synapse/handlers/e2e_keys.py

@@ -35,6 +35,7 @@ from synapse.api.errors import CodeMessageException, Codes, NotFoundError, Synap
 from synapse.handlers.device import DeviceHandler
 from synapse.logging.context import make_deferred_yieldable, run_in_background
 from synapse.logging.opentracing import log_kv, set_tag, tag_args, trace
+from synapse.replication.http.devices import ReplicationUploadKeysForUserRestServlet
 from synapse.types import (
     JsonDict,
     JsonMapping,
@@ -45,7 +46,10 @@ from synapse.types import (
 from synapse.util import json_decoder
 from synapse.util.async_helpers import Linearizer, concurrently_execute
 from synapse.util.cancellation import cancellable
-from synapse.util.retryutils import NotRetryingDestination
+from synapse.util.retryutils import (
+    NotRetryingDestination,
+    filter_destinations_by_retry_limiter,
+)
 
 if TYPE_CHECKING:
     from synapse.server import HomeServer
@@ -86,6 +90,12 @@ class E2eKeysHandler:
                 edu_updater.incoming_signing_key_update,
             )
 
+            self.device_key_uploader = self.upload_device_keys_for_user
+        else:
+            self.device_key_uploader = (
+                ReplicationUploadKeysForUserRestServlet.make_client(hs)
+            )
+
         # doesn't really work as part of the generic query API, because the
         # query request requires an object POST, but we abuse the
         # "query handler" interface.
@@ -268,10 +278,8 @@ class E2eKeysHandler:
                 "%d destinations to query devices for", len(remote_queries_not_in_cache)
             )
 
-            async def _query(
-                destination_queries: Tuple[str, Dict[str, Iterable[str]]]
-            ) -> None:
-                destination, queries = destination_queries
+            async def _query(destination: str) -> None:
+                queries = remote_queries_not_in_cache[destination]
                 return await self._query_devices_for_destination(
                     results,
                     cross_signing_keys,
@@ -281,9 +289,20 @@ class E2eKeysHandler:
                     timeout,
                 )
 
+            # Only try and fetch keys for destinations that are not marked as
+            # down.
+            filtered_destinations = await filter_destinations_by_retry_limiter(
+                remote_queries_not_in_cache.keys(),
+                self.clock,
+                self.store,
+                # Let's give an arbitrary grace period for those hosts that are
+                # only recently down
+                retry_due_within_ms=60 * 1000,
+            )
+
             await concurrently_execute(
                 _query,
-                remote_queries_not_in_cache.items(),
+                filtered_destinations,
                 10,
                 delay_cancellation=True,
             )
@@ -784,36 +803,17 @@ class E2eKeysHandler:
             "one_time_keys": A mapping from algorithm to number of keys for that
                 algorithm, including those previously persisted.
         """
-        # This can only be called from the main process.
-        assert isinstance(self.device_handler, DeviceHandler)
-
         time_now = self.clock.time_msec()
 
         # TODO: Validate the JSON to make sure it has the right keys.
         device_keys = keys.get("device_keys", None)
         if device_keys:
-            logger.info(
-                "Updating device_keys for device %r for user %s at %d",
-                device_id,
-                user_id,
-                time_now,
+            await self.device_key_uploader(
+                user_id=user_id,
+                device_id=device_id,
+                keys={"device_keys": device_keys},
             )
-            log_kv(
-                {
-                    "message": "Updating device_keys for user.",
-                    "user_id": user_id,
-                    "device_id": device_id,
-                }
-            )
-            # TODO: Sign the JSON with the server key
-            changed = await self.store.set_e2e_device_keys(
-                user_id, device_id, time_now, device_keys
-            )
-            if changed:
-                # Only notify about device updates *if* the keys actually changed
-                await self.device_handler.notify_device_update(user_id, [device_id])
-        else:
-            log_kv({"message": "Not updating device_keys for user", "user_id": user_id})
+
         one_time_keys = keys.get("one_time_keys", None)
         if one_time_keys:
             log_kv(
@@ -849,6 +849,49 @@ class E2eKeysHandler:
                 {"message": "Did not update fallback_keys", "reason": "no keys given"}
             )
 
+        result = await self.store.count_e2e_one_time_keys(user_id, device_id)
+
+        set_tag("one_time_key_counts", str(result))
+        return {"one_time_key_counts": result}
+
+    @tag_args
+    async def upload_device_keys_for_user(
+        self, user_id: str, device_id: str, keys: JsonDict
+    ) -> None:
+        """
+        Args:
+            user_id: user whose keys are being uploaded.
+            device_id: device whose keys are being uploaded.
+            device_keys: the `device_keys` of an /keys/upload request.
+
+        """
+        # This can only be called from the main process.
+        assert isinstance(self.device_handler, DeviceHandler)
+
+        time_now = self.clock.time_msec()
+
+        device_keys = keys["device_keys"]
+        logger.info(
+            "Updating device_keys for device %r for user %s at %d",
+            device_id,
+            user_id,
+            time_now,
+        )
+        log_kv(
+            {
+                "message": "Updating device_keys for user.",
+                "user_id": user_id,
+                "device_id": device_id,
+            }
+        )
+        # TODO: Sign the JSON with the server key
+        changed = await self.store.set_e2e_device_keys(
+            user_id, device_id, time_now, device_keys
+        )
+        if changed:
+            # Only notify about device updates *if* the keys actually changed
+            await self.device_handler.notify_device_update(user_id, [device_id])
+
         # the device should have been registered already, but it may have been
         # deleted due to a race with a DELETE request. Or we may be using an
         # old access_token without an associated device_id. Either way, we
@@ -856,11 +899,6 @@ class E2eKeysHandler:
         # keys without a corresponding device.
         await self.device_handler.check_device_registered(user_id, device_id)
 
-        result = await self.store.count_e2e_one_time_keys(user_id, device_id)
-
-        set_tag("one_time_key_counts", str(result))
-        return {"one_time_key_counts": result}
-
     async def _upload_one_time_keys_for_user(
         self, user_id: str, device_id: str, time_now: int, one_time_keys: JsonDict
     ) -> None:

synapse/handlers/e2e_room_keys.py

@@ -247,6 +247,12 @@ class E2eRoomKeysHandler:
                     if current_room_key:
                         if self._should_replace_room_key(current_room_key, room_key):
                             log_kv({"message": "Replacing room key."})
+                            logger.debug(
+                                "Replacing room key. room=%s session=%s user=%s",
+                                room_id,
+                                session_id,
+                                user_id,
+                            )
                             # updates are done one at a time in the DB, so send
                             # updates right away rather than batching them up,
                             # like we do with the inserts
@@ -256,6 +262,12 @@ class E2eRoomKeysHandler:
                             changed = True
                         else:
                             log_kv({"message": "Not replacing room_key."})
+                            logger.debug(
+                                "Not replacing room key. room=%s session=%s user=%s",
+                                room_id,
+                                session_id,
+                                user_id,
+                            )
                     else:
                         log_kv(
                             {
@@ -265,6 +277,12 @@ class E2eRoomKeysHandler:
                             }
                         )
                         log_kv({"message": "Replacing room key."})
+                        logger.debug(
+                            "Inserting new room key. room=%s session=%s user=%s",
+                            room_id,
+                            session_id,
+                            user_id,
+                        )
                         to_insert.append((room_id, session_id, room_key))
                         changed = True
 

synapse/handlers/events.py

@@ -148,7 +148,6 @@ class EventHandler:
     def __init__(self, hs: "HomeServer"):
         self.store = hs.get_datastores().main
         self._storage_controllers = hs.get_storage_controllers()
-        self._config = hs.config
 
     async def get_event(
         self,
@@ -194,7 +193,6 @@ class EventHandler:
             user.to_string(),
             [event],
             is_peeking=is_peeking,
-            msc4115_membership_on_events=self._config.experimental.msc4115_membership_on_events,
         )
 
         if not filtered:

synapse/handlers/initial_sync.py

@@ -199,7 +199,7 @@ class InitialSyncHandler:
                     )
                 elif event.membership == Membership.LEAVE:
                     room_end_token = RoomStreamToken(
-                        stream=event.stream_ordering,
+                        stream=event.event_pos.stream,
                     )
                     deferred_room_state = run_in_background(
                         self._state_storage_controller.get_state_for_events,
@@ -224,7 +224,6 @@ class InitialSyncHandler:
                     self._storage_controllers,
                     user_id,
                     messages,
-                    msc4115_membership_on_events=self.hs.config.experimental.msc4115_membership_on_events,
                 )
 
                 start_token = now_token.copy_and_replace(StreamKeyType.ROOM, token)
@@ -383,7 +382,6 @@ class InitialSyncHandler:
             requester.user.to_string(),
             messages,
             is_peeking=is_peeking,
-            msc4115_membership_on_events=self.hs.config.experimental.msc4115_membership_on_events,
         )
 
         start_token = StreamToken.START.copy_and_replace(StreamKeyType.ROOM, token)
@@ -498,7 +496,6 @@ class InitialSyncHandler:
             requester.user.to_string(),
             messages,
             is_peeking=is_peeking,
-            msc4115_membership_on_events=self.hs.config.experimental.msc4115_membership_on_events,
         )
 
         start_token = now_token.copy_and_replace(StreamKeyType.ROOM, token)

synapse/handlers/message.py

@@ -201,7 +201,7 @@ class MessageHandler:
 
         if at_token:
             last_event_id = (
-                await self.store.get_last_event_in_room_before_stream_ordering(
+                await self.store.get_last_event_id_in_room_before_stream_ordering(
                     room_id,
                     end_token=at_token.room_key,
                 )
@@ -1551,6 +1551,7 @@ class EventCreationHandler:
                     # stream_ordering entry manually (as it was persisted on
                     # another worker).
                     event.internal_metadata.stream_ordering = stream_id
+                    event.internal_metadata.instance_name = writer_instance
 
                 return event
 

synapse/handlers/pagination.py

@@ -27,7 +27,6 @@ from synapse.api.constants import Direction, EventTypes, Membership
 from synapse.api.errors import SynapseError
 from synapse.api.filtering import Filter
 from synapse.events.utils import SerializeEventConfig
-from synapse.handlers.room import ShutdownRoomParams, ShutdownRoomResponse
 from synapse.handlers.worker_lock import NEW_EVENT_DURING_PURGE_LOCK_NAME
 from synapse.logging.opentracing import trace
 from synapse.metrics.background_process_metrics import run_as_background_process
@@ -41,6 +40,7 @@ from synapse.types import (
     StreamKeyType,
     TaskStatus,
 )
+from synapse.types.handlers import ShutdownRoomParams, ShutdownRoomResponse
 from synapse.types.state import StateFilter
 from synapse.util.async_helpers import ReadWriteLock
 from synapse.visibility import filter_events_for_client
@@ -623,7 +623,6 @@ class PaginationHandler:
                 user_id,
                 events,
                 is_peeking=(member_event_id is None),
-                msc4115_membership_on_events=self.hs.config.experimental.msc4115_membership_on_events,
             )
 
         # if after the filter applied there are no more events

synapse/handlers/relations.py

@@ -95,7 +95,6 @@ class RelationsHandler:
         self._event_handler = hs.get_event_handler()
         self._event_serializer = hs.get_event_client_serializer()
         self._event_creation_handler = hs.get_event_creation_handler()
-        self._config = hs.config
 
     async def get_relations(
         self,
@@ -164,7 +163,6 @@ class RelationsHandler:
             user_id,
             events,
             is_peeking=(member_event_id is None),
-            msc4115_membership_on_events=self._config.experimental.msc4115_membership_on_events,
         )
 
         # The relations returned for the requested event do include their
@@ -610,7 +608,6 @@ class RelationsHandler:
             user_id,
             events,
             is_peeking=(member_event_id is None),
-            msc4115_membership_on_events=self._config.experimental.msc4115_membership_on_events,
         )
 
         aggregations = await self.get_bundled_aggregations(

synapse/handlers/room.py

@@ -40,7 +40,6 @@ from typing import (
 )
 
 import attr
-from typing_extensions import TypedDict
 
 import synapse.events.snapshot
 from synapse.api.constants import (
@@ -88,6 +87,7 @@ from synapse.types import (
     UserID,
     create_requester,
 )
+from synapse.types.handlers import ShutdownRoomParams, ShutdownRoomResponse
 from synapse.types.state import StateFilter
 from synapse.util import stringutils
 from synapse.util.caches.response_cache import ResponseCache
@@ -1476,7 +1476,6 @@ class RoomContextHandler:
                 user.to_string(),
                 events,
                 is_peeking=is_peeking,
-                msc4115_membership_on_events=self.hs.config.experimental.msc4115_membership_on_events,
             )
 
         event = await self.store.get_event(
@@ -1780,63 +1779,6 @@ class RoomEventSource(EventSource[RoomStreamToken, EventBase]):
         return self.store.get_current_room_stream_token_for_room_id(room_id)
 
 
-class ShutdownRoomParams(TypedDict):
-    """
-    Attributes:
-        requester_user_id:
-            User who requested the action. Will be recorded as putting the room on the
-            blocking list.
-        new_room_user_id:
-            If set, a new room will be created with this user ID
-            as the creator and admin, and all users in the old room will be
-            moved into that room. If not set, no new room will be created
-            and the users will just be removed from the old room.
-        new_room_name:
-            A string representing the name of the room that new users will
-            be invited to. Defaults to `Content Violation Notification`
-        message:
-            A string containing the first message that will be sent as
-            `new_room_user_id` in the new room. Ideally this will clearly
-            convey why the original room was shut down.
-            Defaults to `Sharing illegal content on this server is not
-            permitted and rooms in violation will be blocked.`
-        block:
-            If set to `true`, this room will be added to a blocking list,
-            preventing future attempts to join the room. Defaults to `false`.
-        purge:
-            If set to `true`, purge the given room from the database.
-        force_purge:
-            If set to `true`, the room will be purged from database
-            even if there are still users joined to the room.
-    """
-
-    requester_user_id: Optional[str]
-    new_room_user_id: Optional[str]
-    new_room_name: Optional[str]
-    message: Optional[str]
-    block: bool
-    purge: bool
-    force_purge: bool
-
-
-class ShutdownRoomResponse(TypedDict):
-    """
-    Attributes:
-        kicked_users: An array of users (`user_id`) that were kicked.
-        failed_to_kick_users:
-            An array of users (`user_id`) that that were not kicked.
-        local_aliases:
-            An array of strings representing the local aliases that were
-            migrated from the old room to the new.
-        new_room_id: A string representing the room ID of the new room.
-    """
-
-    kicked_users: List[str]
-    failed_to_kick_users: List[str]
-    local_aliases: List[str]
-    new_room_id: Optional[str]
-
-
 class RoomShutdownHandler:
     DEFAULT_MESSAGE = (
         "Sharing illegal content on this server is not permitted and rooms in"

synapse/handlers/search.py

@@ -483,7 +483,6 @@ class SearchHandler:
             self._storage_controllers,
             user.to_string(),
             filtered_events,
-            msc4115_membership_on_events=self.hs.config.experimental.msc4115_membership_on_events,
         )
 
         events.sort(key=lambda e: -rank_map[e.event_id])
@@ -585,7 +584,6 @@ class SearchHandler:
                 self._storage_controllers,
                 user.to_string(),
                 filtered_events,
-                msc4115_membership_on_events=self.hs.config.experimental.msc4115_membership_on_events,
             )
 
             room_events.extend(events)
@@ -673,14 +671,12 @@ class SearchHandler:
                 self._storage_controllers,
                 user.to_string(),
                 res.events_before,
-                msc4115_membership_on_events=self.hs.config.experimental.msc4115_membership_on_events,
             )
 
             events_after = await filter_events_for_client(
                 self._storage_controllers,
                 user.to_string(),
                 res.events_after,
-                msc4115_membership_on_events=self.hs.config.experimental.msc4115_membership_on_events,
             )
 
             context: JsonDict = {

synapse/handlers/sliding_sync.py

@@ -0,0 +1,667 @@
+#
+# This file is licensed under the Affero General Public License (AGPL) version 3.
+#
+# Copyright (C) 2024 New Vector, Ltd
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+#
+# See the GNU Affero General Public License for more details:
+# <https://www.gnu.org/licenses/agpl-3.0.html>.
+#
+# Originally licensed under the Apache License, Version 2.0:
+# <http://www.apache.org/licenses/LICENSE-2.0>.
+#
+# [This file includes modifications made by New Vector Limited]
+#
+#
+import logging
+from typing import TYPE_CHECKING, Dict, List, Optional, Tuple
+
+from immutabledict import immutabledict
+
+from synapse.api.constants import AccountDataTypes, EventTypes, Membership
+from synapse.events import EventBase
+from synapse.storage.roommember import RoomsForUser
+from synapse.types import (
+    PersistedEventPosition,
+    Requester,
+    RoomStreamToken,
+    StreamToken,
+    UserID,
+)
+from synapse.types.handlers import OperationType, SlidingSyncConfig, SlidingSyncResult
+from synapse.types.state import StateFilter
+
+if TYPE_CHECKING:
+    from synapse.server import HomeServer
+
+logger = logging.getLogger(__name__)
+
+
+def convert_event_to_rooms_for_user(event: EventBase) -> RoomsForUser:
+    """
+    Quick helper to convert an event to a `RoomsForUser` object.
+    """
+    # These fields should be present for all persisted events
+    assert event.internal_metadata.stream_ordering is not None
+    assert event.internal_metadata.instance_name is not None
+
+    return RoomsForUser(
+        room_id=event.room_id,
+        sender=event.sender,
+        membership=event.membership,
+        event_id=event.event_id,
+        event_pos=PersistedEventPosition(
+            event.internal_metadata.instance_name,
+            event.internal_metadata.stream_ordering,
+        ),
+        room_version_id=event.room_version.identifier,
+    )
+
+
+def filter_membership_for_sync(*, membership: str, user_id: str, sender: str) -> bool:
+    """
+    Returns True if the membership event should be included in the sync response,
+    otherwise False.
+
+    Attributes:
+        membership: The membership state of the user in the room.
+        user_id: The user ID that the membership applies to
+        sender: The person who sent the membership event
+    """
+
+    # Everything except `Membership.LEAVE` because we want everything that's *still*
+    # relevant to the user. There are few more things to include in the sync response
+    # (newly_left) but those are handled separately.
+    #
+    # This logic includes kicks (leave events where the sender is not the same user) and
+    # can be read as "anything that isn't a leave or a leave with a different sender".
+    return membership != Membership.LEAVE or sender != user_id
+
+
+class SlidingSyncHandler:
+    def __init__(self, hs: "HomeServer"):
+        self.clock = hs.get_clock()
+        self.store = hs.get_datastores().main
+        self.storage_controllers = hs.get_storage_controllers()
+        self.auth_blocking = hs.get_auth_blocking()
+        self.notifier = hs.get_notifier()
+        self.event_sources = hs.get_event_sources()
+        self.rooms_to_exclude_globally = hs.config.server.rooms_to_exclude_from_sync
+
+    async def wait_for_sync_for_user(
+        self,
+        requester: Requester,
+        sync_config: SlidingSyncConfig,
+        from_token: Optional[StreamToken] = None,
+        timeout_ms: int = 0,
+    ) -> SlidingSyncResult:
+        """
+        Get the sync for a client if we have new data for it now. Otherwise
+        wait for new data to arrive on the server. If the timeout expires, then
+        return an empty sync result.
+
+        Args:
+            requester: The user making the request
+            sync_config: Sync configuration
+            from_token: The point in the stream to sync from. Token of the end of the
+                previous batch. May be `None` if this is the initial sync request.
+            timeout_ms: The time in milliseconds to wait for new data to arrive. If 0,
+                we will immediately but there might not be any new data so we just return an
+                empty response.
+        """
+        # If the user is not part of the mau group, then check that limits have
+        # not been exceeded (if not part of the group by this point, almost certain
+        # auth_blocking will occur)
+        await self.auth_blocking.check_auth_blocking(requester=requester)
+
+        # TODO: If the To-Device extension is enabled and we have a `from_token`, delete
+        # any to-device messages before that token (since we now know that the device
+        # has received them). (see sync v2 for how to do this)
+
+        # If we're working with a user-provided token, we need to make sure to wait for
+        # this worker to catch up with the token so we don't skip past any incoming
+        # events or future events if the user is nefariously, manually modifying the
+        # token.
+        if from_token is not None:
+            # We need to make sure this worker has caught up with the token. If
+            # this returns false, it means we timed out waiting, and we should
+            # just return an empty response.
+            before_wait_ts = self.clock.time_msec()
+            if not await self.notifier.wait_for_stream_token(from_token):
+                logger.warning(
+                    "Timed out waiting for worker to catch up. Returning empty response"
+                )
+                return SlidingSyncResult.empty(from_token)
+
+            # If we've spent significant time waiting to catch up, take it off
+            # the timeout.
+            after_wait_ts = self.clock.time_msec()
+            if after_wait_ts - before_wait_ts > 1_000:
+                timeout_ms -= after_wait_ts - before_wait_ts
+                timeout_ms = max(timeout_ms, 0)
+
+        # We're going to respond immediately if the timeout is 0 or if this is an
+        # initial sync (without a `from_token`) so we can avoid calling
+        # `notifier.wait_for_events()`.
+        if timeout_ms == 0 or from_token is None:
+            now_token = self.event_sources.get_current_token()
+            result = await self.current_sync_for_user(
+                sync_config,
+                from_token=from_token,
+                to_token=now_token,
+            )
+        else:
+            # Otherwise, we wait for something to happen and report it to the user.
+            async def current_sync_callback(
+                before_token: StreamToken, after_token: StreamToken
+            ) -> SlidingSyncResult:
+                return await self.current_sync_for_user(
+                    sync_config,
+                    from_token=from_token,
+                    to_token=after_token,
+                )
+
+            result = await self.notifier.wait_for_events(
+                sync_config.user.to_string(),
+                timeout_ms,
+                current_sync_callback,
+                from_token=from_token,
+            )
+
+        return result
+
+    async def current_sync_for_user(
+        self,
+        sync_config: SlidingSyncConfig,
+        to_token: StreamToken,
+        from_token: Optional[StreamToken] = None,
+    ) -> SlidingSyncResult:
+        """
+        Generates the response body of a Sliding Sync result, represented as a
+        `SlidingSyncResult`.
+
+        We fetch data according to the token range (> `from_token` and <= `to_token`).
+
+        Args:
+            sync_config: Sync configuration
+            to_token: The point in the stream to sync up to.
+            from_token: The point in the stream to sync from. Token of the end of the
+                previous batch. May be `None` if this is the initial sync request.
+        """
+        user_id = sync_config.user.to_string()
+        app_service = self.store.get_app_service_by_user_id(user_id)
+        if app_service:
+            # We no longer support AS users using /sync directly.
+            # See https://github.com/matrix-org/matrix-doc/issues/1144
+            raise NotImplementedError()
+
+        # Assemble sliding window lists
+        lists: Dict[str, SlidingSyncResult.SlidingWindowList] = {}
+        if sync_config.lists:
+            # Get all of the room IDs that the user should be able to see in the sync
+            # response
+            sync_room_map = await self.get_sync_room_ids_for_user(
+                sync_config.user,
+                from_token=from_token,
+                to_token=to_token,
+            )
+
+            for list_key, list_config in sync_config.lists.items():
+                # Apply filters
+                filtered_sync_room_map = sync_room_map
+                if list_config.filters is not None:
+                    filtered_sync_room_map = await self.filter_rooms(
+                        sync_config.user, sync_room_map, list_config.filters, to_token
+                    )
+
+                sorted_room_info = await self.sort_rooms(
+                    filtered_sync_room_map, to_token
+                )
+
+                ops: List[SlidingSyncResult.SlidingWindowList.Operation] = []
+                if list_config.ranges:
+                    for range in list_config.ranges:
+                        ops.append(
+                            SlidingSyncResult.SlidingWindowList.Operation(
+                                op=OperationType.SYNC,
+                                range=range,
+                                room_ids=[
+                                    room_id
+                                    for room_id, _ in sorted_room_info[
+                                        range[0] : range[1]
+                                    ]
+                                ],
+                            )
+                        )
+
+                lists[list_key] = SlidingSyncResult.SlidingWindowList(
+                    count=len(sorted_room_info),
+                    ops=ops,
+                )
+
+        return SlidingSyncResult(
+            next_pos=to_token,
+            lists=lists,
+            # TODO: Gather room data for rooms in lists and `sync_config.room_subscriptions`
+            rooms={},
+            extensions={},
+        )
+
+    async def get_sync_room_ids_for_user(
+        self,
+        user: UserID,
+        to_token: StreamToken,
+        from_token: Optional[StreamToken] = None,
+    ) -> Dict[str, RoomsForUser]:
+        """
+        Fetch room IDs that should be listed for this user in the sync response (the
+        full room list that will be filtered, sorted, and sliced).
+
+        We're looking for rooms where the user has the following state in the token
+        range (> `from_token` and <= `to_token`):
+
+        - `invite`, `join`, `knock`, `ban` membership events
+        - Kicks (`leave` membership events where `sender` is different from the
+          `user_id`/`state_key`)
+        - `newly_left` (rooms that were left during the given token range)
+        - In order for bans/kicks to not show up in sync, you need to `/forget` those
+          rooms. This doesn't modify the event itself though and only adds the
+          `forgotten` flag to the `room_memberships` table in Synapse. There isn't a way
+          to tell when a room was forgotten at the moment so we can't factor it into the
+          from/to range.
+
+        Args:
+            user: User to fetch rooms for
+            to_token: The token to fetch rooms up to.
+            from_token: The point in the stream to sync from.
+
+        Returns:
+            A dictionary of room IDs that should be listed in the sync response along
+            with membership information in that room at the time of `to_token`.
+        """
+        user_id = user.to_string()
+
+        # First grab a current snapshot rooms for the user
+        # (also handles forgotten rooms)
+        room_for_user_list = await self.store.get_rooms_for_local_user_where_membership_is(
+            user_id=user_id,
+            # We want to fetch any kind of membership (joined and left rooms) in order
+            # to get the `event_pos` of the latest room membership event for the
+            # user.
+            #
+            # We will filter out the rooms that don't belong below (see
+            # `filter_membership_for_sync`)
+            membership_list=Membership.LIST,
+            excluded_rooms=self.rooms_to_exclude_globally,
+        )
+
+        # If the user has never joined any rooms before, we can just return an empty list
+        if not room_for_user_list:
+            return {}
+
+        # Our working list of rooms that can show up in the sync response
+        sync_room_id_set = {
+            room_for_user.room_id: room_for_user
+            for room_for_user in room_for_user_list
+            if filter_membership_for_sync(
+                membership=room_for_user.membership,
+                user_id=user_id,
+                sender=room_for_user.sender,
+            )
+        }
+
+        # Get the `RoomStreamToken` that represents the spot we queried up to when we got
+        # our membership snapshot from `get_rooms_for_local_user_where_membership_is()`.
+        #
+        # First, we need to get the max stream_ordering of each event persister instance
+        # that we queried events from.
+        instance_to_max_stream_ordering_map: Dict[str, int] = {}
+        for room_for_user in room_for_user_list:
+            instance_name = room_for_user.event_pos.instance_name
+            stream_ordering = room_for_user.event_pos.stream
+
+            current_instance_max_stream_ordering = (
+                instance_to_max_stream_ordering_map.get(instance_name)
+            )
+            if (
+                current_instance_max_stream_ordering is None
+                or stream_ordering > current_instance_max_stream_ordering
+            ):
+                instance_to_max_stream_ordering_map[instance_name] = stream_ordering
+
+        # Then assemble the `RoomStreamToken`
+        membership_snapshot_token = RoomStreamToken(
+            # Minimum position in the `instance_map`
+            stream=min(instance_to_max_stream_ordering_map.values()),
+            instance_map=immutabledict(instance_to_max_stream_ordering_map),
+        )
+
+        # Since we fetched the users room list at some point in time after the from/to
+        # tokens, we need to revert/rewind some membership changes to match the point in
+        # time of the `to_token`. In particular, we need to make these fixups:
+        #
+        # - 1a) Remove rooms that the user joined after the `to_token`
+        # - 1b) Add back rooms that the user left after the `to_token`
+        # - 2) Add back newly_left rooms (> `from_token` and <= `to_token`)
+        #
+        # Below, we're doing two separate lookups for membership changes. We could
+        # request everything for both fixups in one range, [`from_token.room_key`,
+        # `membership_snapshot_token`), but we want to avoid raw `stream_ordering`
+        # comparison without `instance_name` (which is flawed). We could refactor
+        # `event.internal_metadata` to include `instance_name` but it might turn out a
+        # little difficult and a bigger, broader Synapse change than we want to make.
+
+        # 1) -----------------------------------------------------
+
+        # 1) Fetch membership changes that fall in the range from `to_token` up to
+        # `membership_snapshot_token`
+        #
+        # If our `to_token` is already the same or ahead of the latest room membership
+        # for the user, we don't need to do any "2)" fix-ups and can just straight-up
+        # use the room list from the snapshot as a base (nothing has changed)
+        membership_change_events_after_to_token = []
+        if not membership_snapshot_token.is_before_or_eq(to_token.room_key):
+            membership_change_events_after_to_token = (
+                await self.store.get_membership_changes_for_user(
+                    user_id,
+                    from_key=to_token.room_key,
+                    to_key=membership_snapshot_token,
+                    excluded_rooms=self.rooms_to_exclude_globally,
+                )
+            )
+
+        # 1) Assemble a list of the last membership events in some given ranges. Someone
+        # could have left and joined multiple times during the given range but we only
+        # care about end-result so we grab the last one.
+        last_membership_change_by_room_id_after_to_token: Dict[str, EventBase] = {}
+        # We also need the first membership event after the `to_token` so we can step
+        # backward to the previous membership that would apply to the from/to range.
+        first_membership_change_by_room_id_after_to_token: Dict[str, EventBase] = {}
+        for event in membership_change_events_after_to_token:
+            last_membership_change_by_room_id_after_to_token[event.room_id] = event
+            # Only set if we haven't already set it
+            first_membership_change_by_room_id_after_to_token.setdefault(
+                event.room_id, event
+            )
+
+        # 1) Fixup
+        for (
+            last_membership_change_after_to_token
+        ) in last_membership_change_by_room_id_after_to_token.values():
+            room_id = last_membership_change_after_to_token.room_id
+
+            # We want to find the first membership change after the `to_token` then step
+            # backward to know the membership in the from/to range.
+            first_membership_change_after_to_token = (
+                first_membership_change_by_room_id_after_to_token.get(room_id)
+            )
+            assert first_membership_change_after_to_token is not None, (
+                "If there was a `last_membership_change_after_to_token` that we're iterating over, "
+                + "then there should be corresponding a first change. For example, even if there "
+                + "is only one event after the `to_token`, the first and last event will be same event. "
+                + "This is probably a mistake in assembling the `last_membership_change_by_room_id_after_to_token`"
+                + "/`first_membership_change_by_room_id_after_to_token` dicts above."
+            )
+            # TODO: Instead of reading from `unsigned`, refactor this to use the
+            # `current_state_delta_stream` table in the future. Probably a new
+            # `get_membership_changes_for_user()` function that uses
+            # `current_state_delta_stream` with a join to `room_memberships`. This would
+            # help in state reset scenarios since `prev_content` is looking at the
+            # current branch vs the current room state. This is all just data given to
+            # the client so no real harm to data integrity, but we'd like to be nice to
+            # the client. Since the `current_state_delta_stream` table is new, it
+            # doesn't have all events in it. Since this is Sliding Sync, if we ever need
+            # to, we can signal the client to throw all of their state away by sending
+            # "operation: RESET".
+            prev_content = first_membership_change_after_to_token.unsigned.get(
+                "prev_content", {}
+            )
+            prev_membership = prev_content.get("membership", None)
+            prev_sender = first_membership_change_after_to_token.unsigned.get(
+                "prev_sender", None
+            )
+
+            # Check if the previous membership (membership that applies to the from/to
+            # range) should be included in our `sync_room_id_set`
+            should_prev_membership_be_included = (
+                prev_membership is not None
+                and prev_sender is not None
+                and filter_membership_for_sync(
+                    membership=prev_membership,
+                    user_id=user_id,
+                    sender=prev_sender,
+                )
+            )
+
+            # Check if the last membership (membership that applies to our snapshot) was
+            # already included in our `sync_room_id_set`
+            was_last_membership_already_included = filter_membership_for_sync(
+                membership=last_membership_change_after_to_token.membership,
+                user_id=user_id,
+                sender=last_membership_change_after_to_token.sender,
+            )
+
+            # 1a) Add back rooms that the user left after the `to_token`
+            #
+            # For example, if the last membership event after the `to_token` is a leave
+            # event, then the room was excluded from `sync_room_id_set` when we first
+            # crafted it above. We should add these rooms back as long as the user also
+            # was part of the room before the `to_token`.
+            if (
+                not was_last_membership_already_included
+                and should_prev_membership_be_included
+            ):
+                sync_room_id_set[room_id] = convert_event_to_rooms_for_user(
+                    last_membership_change_after_to_token
+                )
+            # 1b) Remove rooms that the user joined (hasn't left) after the `to_token`
+            #
+            # For example, if the last membership event after the `to_token` is a "join"
+            # event, then the room was included `sync_room_id_set` when we first crafted
+            # it above. We should remove these rooms as long as the user also wasn't
+            # part of the room before the `to_token`.
+            elif (
+                was_last_membership_already_included
+                and not should_prev_membership_be_included
+            ):
+                del sync_room_id_set[room_id]
+
+        # 2) -----------------------------------------------------
+        # We fix-up newly_left rooms after the first fixup because it may have removed
+        # some left rooms that we can figure out our newly_left in the following code
+
+        # 2) Fetch membership changes that fall in the range from `from_token` up to `to_token`
+        membership_change_events_in_from_to_range = []
+        if from_token:
+            membership_change_events_in_from_to_range = (
+                await self.store.get_membership_changes_for_user(
+                    user_id,
+                    from_key=from_token.room_key,
+                    to_key=to_token.room_key,
+                    excluded_rooms=self.rooms_to_exclude_globally,
+                )
+            )
+
+        # 2) Assemble a list of the last membership events in some given ranges. Someone
+        # could have left and joined multiple times during the given range but we only
+        # care about end-result so we grab the last one.
+        last_membership_change_by_room_id_in_from_to_range: Dict[str, EventBase] = {}
+        for event in membership_change_events_in_from_to_range:
+            last_membership_change_by_room_id_in_from_to_range[event.room_id] = event
+
+        # 2) Fixup
+        for (
+            last_membership_change_in_from_to_range
+        ) in last_membership_change_by_room_id_in_from_to_range.values():
+            room_id = last_membership_change_in_from_to_range.room_id
+
+            # 2) Add back newly_left rooms (> `from_token` and <= `to_token`). We
+            # include newly_left rooms because the last event that the user should see
+            # is their own leave event
+            if last_membership_change_in_from_to_range.membership == Membership.LEAVE:
+                sync_room_id_set[room_id] = convert_event_to_rooms_for_user(
+                    last_membership_change_in_from_to_range
+                )
+
+        return sync_room_id_set
+
+    async def filter_rooms(
+        self,
+        user: UserID,
+        sync_room_map: Dict[str, RoomsForUser],
+        filters: SlidingSyncConfig.SlidingSyncList.Filters,
+        to_token: StreamToken,
+    ) -> Dict[str, RoomsForUser]:
+        """
+        Filter rooms based on the sync request.
+
+        Args:
+            user: User to filter rooms for
+            sync_room_map: Dictionary of room IDs to sort along with membership
+                information in the room at the time of `to_token`.
+            filters: Filters to apply
+            to_token: We filter based on the state of the room at this token
+
+        Returns:
+            A filtered dictionary of room IDs along with membership information in the
+            room at the time of `to_token`.
+        """
+        user_id = user.to_string()
+
+        # TODO: Apply filters
+        #
+        # TODO: Exclude partially stated rooms unless the `required_state` has
+        # `["m.room.member", "$LAZY"]`
+
+        filtered_room_id_set = set(sync_room_map.keys())
+
+        # Filter for Direct-Message (DM) rooms
+        if filters.is_dm is not None:
+            # We're using global account data (`m.direct`) instead of checking for
+            # `is_direct` on membership events because that property only appears for
+            # the invitee membership event (doesn't show up for the inviter). Account
+            # data is set by the client so it needs to be scrutinized.
+            #
+            # We're unable to take `to_token` into account for global account data since
+            # we only keep track of the latest account data for the user.
+            dm_map = await self.store.get_global_account_data_by_type_for_user(
+                user_id, AccountDataTypes.DIRECT
+            )
+
+            # Flatten out the map
+            dm_room_id_set = set()
+            if dm_map:
+                for room_ids in dm_map.values():
+                    # Account data should be a list of room IDs. Ignore anything else
+                    if isinstance(room_ids, list):
+                        for room_id in room_ids:
+                            if isinstance(room_id, str):
+                                dm_room_id_set.add(room_id)
+
+            if filters.is_dm:
+                # Only DM rooms please
+                filtered_room_id_set = filtered_room_id_set.intersection(dm_room_id_set)
+            else:
+                # Only non-DM rooms please
+                filtered_room_id_set = filtered_room_id_set.difference(dm_room_id_set)
+
+        if filters.spaces:
+            raise NotImplementedError()
+
+        # Filter for encrypted rooms
+        if filters.is_encrypted is not None:
+            # Make a copy so we don't run into an error: `Set changed size during
+            # iteration`, when we filter out and remove items
+            for room_id in list(filtered_room_id_set):
+                state_at_to_token = await self.storage_controllers.state.get_state_at(
+                    room_id,
+                    to_token,
+                    state_filter=StateFilter.from_types(
+                        [(EventTypes.RoomEncryption, "")]
+                    ),
+                )
+                is_encrypted = state_at_to_token.get((EventTypes.RoomEncryption, ""))
+
+                # If we're looking for encrypted rooms, filter out rooms that are not
+                # encrypted and vice versa
+                if (filters.is_encrypted and not is_encrypted) or (
+                    not filters.is_encrypted and is_encrypted
+                ):
+                    filtered_room_id_set.remove(room_id)
+
+        if filters.is_invite:
+            raise NotImplementedError()
+
+        if filters.room_types:
+            raise NotImplementedError()
+
+        if filters.not_room_types:
+            raise NotImplementedError()
+
+        if filters.room_name_like:
+            raise NotImplementedError()
+
+        if filters.tags:
+            raise NotImplementedError()
+
+        if filters.not_tags:
+            raise NotImplementedError()
+
+        # Assemble a new sync room map but only with the `filtered_room_id_set`
+        return {room_id: sync_room_map[room_id] for room_id in filtered_room_id_set}
+
+    async def sort_rooms(
+        self,
+        sync_room_map: Dict[str, RoomsForUser],
+        to_token: StreamToken,
+    ) -> List[Tuple[str, RoomsForUser]]:
+        """
+        Sort by `stream_ordering` of the last event that the user should see in the
+        room. `stream_ordering` is unique so we get a stable sort.
+
+        Args:
+            sync_room_map: Dictionary of room IDs to sort along with membership
+                information in the room at the time of `to_token`.
+            to_token: We sort based on the events in the room at this token (<= `to_token`)
+
+        Returns:
+            A sorted list of room IDs by `stream_ordering` along with membership information.
+        """
+
+        # Assemble a map of room ID to the `stream_ordering` of the last activity that the
+        # user should see in the room (<= `to_token`)
+        last_activity_in_room_map: Dict[str, int] = {}
+        for room_id, room_for_user in sync_room_map.items():
+            # If they are fully-joined to the room, let's find the latest activity
+            # at/before the `to_token`.
+            if room_for_user.membership == Membership.JOIN:
+                last_event_result = (
+                    await self.store.get_last_event_pos_in_room_before_stream_ordering(
+                        room_id, to_token.room_key
+                    )
+                )
+
+                # If the room has no events at/before the `to_token`, this is probably a
+                # mistake in the code that generates the `sync_room_map` since that should
+                # only give us rooms that the user had membership in during the token range.
+                assert last_event_result is not None
+
+                _, event_pos = last_event_result
+
+                last_activity_in_room_map[room_id] = event_pos.stream
+            else:
+                # Otherwise, if the user has left/been invited/knocked/been banned from
+                # a room, they shouldn't see anything past that point.
+                last_activity_in_room_map[room_id] = room_for_user.event_pos.stream
+
+        return sorted(
+            sync_room_map.items(),
+            # Sort by the last activity (stream_ordering) in the room
+            key=lambda room_info: last_activity_in_room_map[room_info[0]],
+            # We want descending order
+            reverse=True,
+        )

synapse/handlers/sync.py

@@ -844,7 +844,6 @@ class SyncHandler:
                     sync_config.user.to_string(),
                     recents,
                     always_include_ids=current_state_ids,
-                    msc4115_membership_on_events=self.hs_config.experimental.msc4115_membership_on_events,
                 )
                 log_kv({"recents_after_visibility_filtering": len(recents)})
             else:
@@ -930,7 +929,6 @@ class SyncHandler:
                     sync_config.user.to_string(),
                     loaded_recents,
                     always_include_ids=current_state_ids,
-                    msc4115_membership_on_events=self.hs_config.experimental.msc4115_membership_on_events,
                 )
 
                 loaded_recents = []
@@ -981,89 +979,6 @@ class SyncHandler:
             bundled_aggregations=bundled_aggregations,
         )
 
-    async def get_state_after_event(
-        self,
-        event_id: str,
-        state_filter: Optional[StateFilter] = None,
-        await_full_state: bool = True,
-    ) -> StateMap[str]:
-        """
-        Get the room state after the given event
-
-        Args:
-            event_id: event of interest
-            state_filter: The state filter used to fetch state from the database.
-            await_full_state: if `True`, will block if we do not yet have complete state
-                at the event and `state_filter` is not satisfied by partial state.
-                Defaults to `True`.
-        """
-        state_ids = await self._state_storage_controller.get_state_ids_for_event(
-            event_id,
-            state_filter=state_filter or StateFilter.all(),
-            await_full_state=await_full_state,
-        )
-
-        # using get_metadata_for_events here (instead of get_event) sidesteps an issue
-        # with redactions: if `event_id` is a redaction event, and we don't have the
-        # original (possibly because it got purged), get_event will refuse to return
-        # the redaction event, which isn't terribly helpful here.
-        #
-        # (To be fair, in that case we could assume it's *not* a state event, and
-        # therefore we don't need to worry about it. But still, it seems cleaner just
-        # to pull the metadata.)
-        m = (await self.store.get_metadata_for_events([event_id]))[event_id]
-        if m.state_key is not None and m.rejection_reason is None:
-            state_ids = dict(state_ids)
-            state_ids[(m.event_type, m.state_key)] = event_id
-
-        return state_ids
-
-    async def get_state_at(
-        self,
-        room_id: str,
-        stream_position: StreamToken,
-        state_filter: Optional[StateFilter] = None,
-        await_full_state: bool = True,
-    ) -> StateMap[str]:
-        """Get the room state at a particular stream position
-
-        Args:
-            room_id: room for which to get state
-            stream_position: point at which to get state
-            state_filter: The state filter used to fetch state from the database.
-            await_full_state: if `True`, will block if we do not yet have complete state
-                at the last event in the room before `stream_position` and
-                `state_filter` is not satisfied by partial state. Defaults to `True`.
-        """
-        # FIXME: This gets the state at the latest event before the stream ordering,
-        # which might not be the same as the "current state" of the room at the time
-        # of the stream token if there were multiple forward extremities at the time.
-        last_event_id = await self.store.get_last_event_in_room_before_stream_ordering(
-            room_id,
-            end_token=stream_position.room_key,
-        )
-
-        if last_event_id:
-            state = await self.get_state_after_event(
-                last_event_id,
-                state_filter=state_filter or StateFilter.all(),
-                await_full_state=await_full_state,
-            )
-
-        else:
-            # no events in this room - so presumably no state
-            state = {}
-
-            # (erikj) This should be rarely hit, but we've had some reports that
-            # we get more state down gappy syncs than we should, so let's add
-            # some logging.
-            logger.info(
-                "Failed to find any events in room %s at %s",
-                room_id,
-                stream_position.room_key,
-            )
-        return state
-
     async def compute_summary(
         self,
         room_id: str,
@@ -1437,7 +1352,7 @@ class SyncHandler:
             await_full_state = True
             lazy_load_members = False
 
-        state_at_timeline_end = await self.get_state_at(
+        state_at_timeline_end = await self._state_storage_controller.get_state_at(
             room_id,
             stream_position=end_token,
             state_filter=state_filter,
@@ -1521,7 +1436,7 @@ class SyncHandler:
             # We need to make sure the first event in our batch points to the
             # last event in the previous batch.
             last_event_id_prev_batch = (
-                await self.store.get_last_event_in_room_before_stream_ordering(
+                await self.store.get_last_event_id_in_room_before_stream_ordering(
                     room_id,
                     end_token=since_token.room_key,
                 )
@@ -1565,7 +1480,7 @@ class SyncHandler:
         else:
             # We can get here if the user has ignored the senders of all
             # the recent events.
-            state_at_timeline_start = await self.get_state_at(
+            state_at_timeline_start = await self._state_storage_controller.get_state_at(
                 room_id,
                 stream_position=end_token,
                 state_filter=state_filter,
@@ -1587,14 +1502,14 @@ class SyncHandler:
             # about them).
             state_filter = StateFilter.all()
 
-        state_at_previous_sync = await self.get_state_at(
+        state_at_previous_sync = await self._state_storage_controller.get_state_at(
             room_id,
             stream_position=since_token,
             state_filter=state_filter,
             await_full_state=await_full_state,
         )
 
-        state_at_timeline_end = await self.get_state_at(
+        state_at_timeline_end = await self._state_storage_controller.get_state_at(
             room_id,
             stream_position=end_token,
             state_filter=state_filter,
@@ -2002,7 +1917,7 @@ class SyncHandler:
         """
         user_id = sync_config.user.to_string()
 
-        # Note: we get the users room list *before* we get the current token, this
+        # Note: we get the users room list *before* we get the `now_token`, this
         # avoids checking back in history if rooms are joined after the token is fetched.
         token_before_rooms = self.event_sources.get_current_token()
         mutable_joined_room_ids = set(await self.store.get_rooms_for_user(user_id))
@@ -2014,10 +1929,10 @@ class SyncHandler:
         now_token = self.event_sources.get_current_token()
         log_kv({"now_token": now_token})
 
-        # Since we fetched the users room list before the token, there's a small window
-        # during which membership events may have been persisted, so we fetch these now
-        # and modify the joined room list for any changes between the get_rooms_for_user
-        # call and the get_current_token call.
+        # Since we fetched the users room list before calculating the `now_token` (see
+        # above), there's a small window during which membership events may have been
+        # persisted, so we fetch these now and modify the joined room list for any
+        # changes between the get_rooms_for_user call and the get_current_token call.
         membership_change_events = []
         if since_token:
             membership_change_events = await self.store.get_membership_changes_for_user(
@@ -2027,16 +1942,19 @@ class SyncHandler:
                 self.rooms_to_exclude_globally,
             )
 
-            mem_last_change_by_room_id: Dict[str, EventBase] = {}
+            last_membership_change_by_room_id: Dict[str, EventBase] = {}
             for event in membership_change_events:
-                mem_last_change_by_room_id[event.room_id] = event
+                last_membership_change_by_room_id[event.room_id] = event
 
             # For the latest membership event in each room found, add/remove the room ID
             # from the joined room list accordingly. In this case we only care if the
             # latest change is JOIN.
 
-            for room_id, event in mem_last_change_by_room_id.items():
+            for room_id, event in last_membership_change_by_room_id.items():
                 assert event.internal_metadata.stream_ordering
+                # As a shortcut, skip any events that happened before we got our
+                # `get_rooms_for_user()` snapshot (any changes are already represented
+                # in that list).
                 if (
                     event.internal_metadata.stream_ordering
                     < token_before_rooms.room_key.stream
@@ -2590,7 +2508,7 @@ class SyncHandler:
                 continue
 
             if room_id in sync_result_builder.joined_room_ids or has_join:
-                old_state_ids = await self.get_state_at(
+                old_state_ids = await self._state_storage_controller.get_state_at(
                     room_id,
                     since_token,
                     state_filter=StateFilter.from_types([(EventTypes.Member, user_id)]),
@@ -2620,12 +2538,14 @@ class SyncHandler:
                     newly_left_rooms.append(room_id)
                 else:
                     if not old_state_ids:
-                        old_state_ids = await self.get_state_at(
-                            room_id,
-                            since_token,
-                            state_filter=StateFilter.from_types(
-                                [(EventTypes.Member, user_id)]
-                            ),
+                        old_state_ids = (
+                            await self._state_storage_controller.get_state_at(
+                                room_id,
+                                since_token,
+                                state_filter=StateFilter.from_types(
+                                    [(EventTypes.Member, user_id)]
+                                ),
+                            )
                         )
                         old_mem_ev_id = old_state_ids.get(
                             (EventTypes.Member, user_id), None
@@ -2830,7 +2750,7 @@ class SyncHandler:
                             continue
 
                 leave_token = now_token.copy_and_replace(
-                    StreamKeyType.ROOM, RoomStreamToken(stream=event.stream_ordering)
+                    StreamKeyType.ROOM, RoomStreamToken(stream=event.event_pos.stream)
                 )
                 room_entries.append(
                     RoomSyncResultBuilder(

synapse/http/matrixfederationclient.py

@@ -57,7 +57,7 @@ from twisted.internet.interfaces import IReactorTime
 from twisted.internet.task import Cooperator
 from twisted.web.client import ResponseFailed
 from twisted.web.http_headers import Headers
-from twisted.web.iweb import IAgent, IBodyProducer, IResponse
+from twisted.web.iweb import UNKNOWN_LENGTH, IAgent, IBodyProducer, IResponse
 
 import synapse.metrics
 import synapse.util.retryutils
@@ -68,6 +68,7 @@ from synapse.api.errors import (
     RequestSendFailed,
     SynapseError,
 )
+from synapse.api.ratelimiting import Ratelimiter
 from synapse.crypto.context_factory import FederationPolicyForHTTPS
 from synapse.http import QuieterFileBodyProducer
 from synapse.http.client import (
@@ -1411,9 +1412,11 @@ class MatrixFederationHttpClient:
         destination: str,
         path: str,
         output_stream: BinaryIO,
+        download_ratelimiter: Ratelimiter,
+        ip_address: str,
+        max_size: int,
         args: Optional[QueryParams] = None,
         retry_on_dns_fail: bool = True,
-        max_size: Optional[int] = None,
         ignore_backoff: bool = False,
         follow_redirects: bool = False,
     ) -> Tuple[int, Dict[bytes, List[bytes]]]:
@@ -1422,6 +1425,10 @@ class MatrixFederationHttpClient:
             destination: The remote server to send the HTTP request to.
             path: The HTTP path to GET.
             output_stream: File to write the response body to.
+            download_ratelimiter: a ratelimiter to limit remote media downloads, keyed to
+                requester IP
+            ip_address: IP address of the requester
+            max_size: maximum allowable size in bytes of the file
             args: Optional dictionary used to create the query string.
             ignore_backoff: true to ignore the historical backoff data
                 and try the request anyway.
@@ -1441,11 +1448,27 @@ class MatrixFederationHttpClient:
                 federation whitelist
             RequestSendFailed: If there were problems connecting to the
                 remote, due to e.g. DNS failures, connection timeouts etc.
+            SynapseError: If the requested file exceeds ratelimits
         """
         request = MatrixFederationRequest(
             method="GET", destination=destination, path=path, query=args
         )
 
+        # check for a minimum balance of 1MiB in ratelimiter before initiating request
+        send_req, _ = await download_ratelimiter.can_do_action(
+            requester=None, key=ip_address, n_actions=1048576, update=False
+        )
+
+        if not send_req:
+            msg = "Requested file size exceeds ratelimits"
+            logger.warning(
+                "{%s} [%s] %s",
+                request.txn_id,
+                request.destination,
+                msg,
+            )
+            raise SynapseError(HTTPStatus.TOO_MANY_REQUESTS, msg, Codes.LIMIT_EXCEEDED)
+
         response = await self._send_request(
             request,
             retry_on_dns_fail=retry_on_dns_fail,
@@ -1455,12 +1478,36 @@ class MatrixFederationHttpClient:
 
         headers = dict(response.headers.getAllRawHeaders())
 
+        expected_size = response.length
+        # if we don't get an expected length then use the max length
+        if expected_size == UNKNOWN_LENGTH:
+            expected_size = max_size
+            logger.debug(
+                f"File size unknown, assuming file is max allowable size: {max_size}"
+            )
+
+        read_body, _ = await download_ratelimiter.can_do_action(
+            requester=None,
+            key=ip_address,
+            n_actions=expected_size,
+        )
+        if not read_body:
+            msg = "Requested file size exceeds ratelimits"
+            logger.warning(
+                "{%s} [%s] %s",
+                request.txn_id,
+                request.destination,
+                msg,
+            )
+            raise SynapseError(HTTPStatus.TOO_MANY_REQUESTS, msg, Codes.LIMIT_EXCEEDED)
+
         try:
-            d = read_body_with_max_size(response, output_stream, max_size)
+            # add a byte of headroom to max size as function errs at >=
+            d = read_body_with_max_size(response, output_stream, expected_size + 1)
             d.addTimeout(self.default_timeout_seconds, self.reactor)
             length = await make_deferred_yieldable(d)
         except BodyExceededMaxSize:
-            msg = "Requested file is too large > %r bytes" % (max_size,)
+            msg = "Requested file is too large > %r bytes" % (expected_size,)
             logger.warning(
                 "{%s} [%s] %s",
                 request.txn_id,

synapse/http/servlet.py

@@ -119,14 +119,15 @@ def parse_integer(
         default: value to use if the parameter is absent, defaults to None.
         required: whether to raise a 400 SynapseError if the parameter is absent,
             defaults to False.
-        negative: whether to allow negative integers, defaults to True.
+        negative: whether to allow negative integers, defaults to False (disallowing
+            negatives).
     Returns:
         An int value or the default.
 
     Raises:
         SynapseError: if the parameter is absent and required, if the
             parameter is present and not an integer, or if the
-            parameter is illegitimate negative.
+            parameter is illegitimately negative.
     """
     args: Mapping[bytes, Sequence[bytes]] = request.args  # type: ignore
     return parse_integer_from_args(args, name, default, required, negative)
@@ -164,7 +165,7 @@ def parse_integer_from_args(
     name: str,
     default: Optional[int] = None,
     required: bool = False,
-    negative: bool = True,
+    negative: bool = False,
 ) -> Optional[int]:
     """Parse an integer parameter from the request string
 
@@ -174,7 +175,8 @@ def parse_integer_from_args(
         default: value to use if the parameter is absent, defaults to None.
         required: whether to raise a 400 SynapseError if the parameter is absent,
             defaults to False.
-        negative: whether to allow negative integers, defaults to True.
+        negative: whether to allow negative integers, defaults to False (disallowing
+            negatives).
 
     Returns:
         An int value or the default.
@@ -182,7 +184,7 @@ def parse_integer_from_args(
     Raises:
         SynapseError: if the parameter is absent and required, if the
             parameter is present and not an integer, or if the
-            parameter is illegitimate negative.
+            parameter is illegitimately negative.
     """
     name_bytes = name.encode("ascii")
 

synapse/media/media_repository.py

@@ -42,6 +42,7 @@ from synapse.api.errors import (
     SynapseError,
     cs_error,
 )
+from synapse.api.ratelimiting import Ratelimiter
 from synapse.config.repository import ThumbnailRequirement
 from synapse.http.server import respond_with_json
 from synapse.http.site import SynapseRequest
@@ -111,6 +112,12 @@ class MediaRepository:
         )
         self.prevent_media_downloads_from = hs.config.media.prevent_media_downloads_from
 
+        self.download_ratelimiter = Ratelimiter(
+            store=hs.get_storage_controllers().main,
+            clock=hs.get_clock(),
+            cfg=hs.config.ratelimiting.remote_media_downloads,
+        )
+
         # List of StorageProviders where we should search for media and
         # potentially upload to.
         storage_providers = []
@@ -464,6 +471,7 @@ class MediaRepository:
         media_id: str,
         name: Optional[str],
         max_timeout_ms: int,
+        ip_address: str,
     ) -> None:
         """Respond to requests for remote media.
 
@@ -475,6 +483,7 @@ class MediaRepository:
                 the filename in the Content-Disposition header of the response.
             max_timeout_ms: the maximum number of milliseconds to wait for the
                 media to be uploaded.
+            ip_address: the IP address of the requester
 
         Returns:
             Resolves once a response has successfully been written to request
@@ -500,7 +509,11 @@ class MediaRepository:
         key = (server_name, media_id)
         async with self.remote_media_linearizer.queue(key):
             responder, media_info = await self._get_remote_media_impl(
-                server_name, media_id, max_timeout_ms
+                server_name,
+                media_id,
+                max_timeout_ms,
+                self.download_ratelimiter,
+                ip_address,
             )
 
         # We deliberately stream the file outside the lock
@@ -517,7 +530,7 @@ class MediaRepository:
             respond_404(request)
 
     async def get_remote_media_info(
-        self, server_name: str, media_id: str, max_timeout_ms: int
+        self, server_name: str, media_id: str, max_timeout_ms: int, ip_address: str
     ) -> RemoteMedia:
         """Gets the media info associated with the remote file, downloading
         if necessary.
@@ -527,6 +540,7 @@ class MediaRepository:
             media_id: The media ID of the content (as defined by the remote server).
             max_timeout_ms: the maximum number of milliseconds to wait for the
                 media to be uploaded.
+            ip_address: IP address of the requester
 
         Returns:
             The media info of the file
@@ -542,7 +556,11 @@ class MediaRepository:
         key = (server_name, media_id)
         async with self.remote_media_linearizer.queue(key):
             responder, media_info = await self._get_remote_media_impl(
-                server_name, media_id, max_timeout_ms
+                server_name,
+                media_id,
+                max_timeout_ms,
+                self.download_ratelimiter,
+                ip_address,
             )
 
         # Ensure we actually use the responder so that it releases resources
@@ -553,7 +571,12 @@ class MediaRepository:
         return media_info
 
     async def _get_remote_media_impl(
-        self, server_name: str, media_id: str, max_timeout_ms: int
+        self,
+        server_name: str,
+        media_id: str,
+        max_timeout_ms: int,
+        download_ratelimiter: Ratelimiter,
+        ip_address: str,
     ) -> Tuple[Optional[Responder], RemoteMedia]:
         """Looks for media in local cache, if not there then attempt to
         download from remote server.
@@ -564,6 +587,9 @@ class MediaRepository:
                 remote server).
             max_timeout_ms: the maximum number of milliseconds to wait for the
                 media to be uploaded.
+            download_ratelimiter: a ratelimiter limiting remote media downloads, keyed to
+                requester IP.
+            ip_address: the IP address of the requester
 
         Returns:
             A tuple of responder and the media info of the file.
@@ -596,7 +622,7 @@ class MediaRepository:
 
         try:
             media_info = await self._download_remote_file(
-                server_name, media_id, max_timeout_ms
+                server_name, media_id, max_timeout_ms, download_ratelimiter, ip_address
             )
         except SynapseError:
             raise
@@ -630,6 +656,8 @@ class MediaRepository:
         server_name: str,
         media_id: str,
         max_timeout_ms: int,
+        download_ratelimiter: Ratelimiter,
+        ip_address: str,
     ) -> RemoteMedia:
         """Attempt to download the remote file from the given server name,
         using the given file_id as the local id.
@@ -641,6 +669,9 @@ class MediaRepository:
                 locally generated.
             max_timeout_ms: the maximum number of milliseconds to wait for the
                 media to be uploaded.
+            download_ratelimiter: a ratelimiter limiting remote media downloads, keyed to
+                requester IP
+            ip_address: the IP address of the requester
 
         Returns:
             The media info of the file.
@@ -658,6 +689,8 @@ class MediaRepository:
                     output_stream=f,
                     max_size=self.max_upload_size,
                     max_timeout_ms=max_timeout_ms,
+                    download_ratelimiter=download_ratelimiter,
+                    ip_address=ip_address,
                 )
             except RequestSendFailed as e:
                 logger.warning(

synapse/media/thumbnailer.py

@@ -359,9 +359,10 @@ class ThumbnailProvider:
         desired_method: str,
         desired_type: str,
         max_timeout_ms: int,
+        ip_address: str,
     ) -> None:
         media_info = await self.media_repo.get_remote_media_info(
-            server_name, media_id, max_timeout_ms
+            server_name, media_id, max_timeout_ms, ip_address
         )
         if not media_info:
             respond_404(request)
@@ -422,12 +423,13 @@ class ThumbnailProvider:
         method: str,
         m_type: str,
         max_timeout_ms: int,
+        ip_address: str,
     ) -> None:
         # TODO: Don't download the whole remote file
         # We should proxy the thumbnail from the remote server instead of
         # downloading the remote file and generating our own thumbnails.
         media_info = await self.media_repo.get_remote_media_info(
-            server_name, media_id, max_timeout_ms
+            server_name, media_id, max_timeout_ms, ip_address
         )
         if not media_info:
             return

synapse/notifier.py

@@ -721,7 +721,6 @@ class Notifier:
                         user.to_string(),
                         new_events,
                         is_peeking=is_peeking,
-                        msc4115_membership_on_events=self.hs.config.experimental.msc4115_membership_on_events,
                     )
                 elif keyname == StreamKeyType.PRESENCE:
                     now = self.clock.time_msec()

synapse/push/mailer.py

@@ -532,7 +532,6 @@ class Mailer:
             self._storage_controllers,
             user_id,
             results.events_before,
-            msc4115_membership_on_events=self.hs.config.experimental.msc4115_membership_on_events,
         )
         the_events.append(notif_event)
 

synapse/rest/__init__.py

@@ -53,7 +53,7 @@ from synapse.rest.client import (
     register,
     relations,
     rendezvous,
-    report_event,
+    reporting,
     room,
     room_keys,
     room_upgrade_rest_servlet,
@@ -128,7 +128,7 @@ class ClientRestResource(JsonResource):
         tags.register_servlets(hs, client_resource)
         account_data.register_servlets(hs, client_resource)
         if is_main_process:
-            report_event.register_servlets(hs, client_resource)
+            reporting.register_servlets(hs, client_resource)
             openid.register_servlets(hs, client_resource)
         notifications.register_servlets(hs, client_resource)
         devices.register_servlets(hs, client_resource)

synapse/rest/admin/experimental_features.py

@@ -41,7 +41,6 @@ class ExperimentalFeature(str, Enum):
 
     MSC3026 = "msc3026"
     MSC3881 = "msc3881"
-    MSC3967 = "msc3967"
 
 
 class ExperimentalFeaturesRestServlet(RestServlet):

synapse/rest/admin/federation.py

@@ -61,8 +61,8 @@ class ListDestinationsRestServlet(RestServlet):
     async def on_GET(self, request: SynapseRequest) -> Tuple[int, JsonDict]:
         await assert_requester_is_admin(self._auth, request)
 
-        start = parse_integer(request, "from", default=0, negative=False)
-        limit = parse_integer(request, "limit", default=100, negative=False)
+        start = parse_integer(request, "from", default=0)
+        limit = parse_integer(request, "limit", default=100)
 
         destination = parse_string(request, "destination")
 
@@ -181,8 +181,8 @@ class DestinationMembershipRestServlet(RestServlet):
         if not await self._store.is_destination_known(destination):
             raise NotFoundError("Unknown destination")
 
-        start = parse_integer(request, "from", default=0, negative=False)
-        limit = parse_integer(request, "limit", default=100, negative=False)
+        start = parse_integer(request, "from", default=0)
+        limit = parse_integer(request, "limit", default=100)
 
         direction = parse_enum(request, "dir", Direction, default=Direction.FORWARDS)
 

synapse/rest/admin/media.py

@@ -311,8 +311,8 @@ class DeleteMediaByDateSize(RestServlet):
     ) -> Tuple[int, JsonDict]:
         await assert_requester_is_admin(self.auth, request)
 
-        before_ts = parse_integer(request, "before_ts", required=True, negative=False)
-        size_gt = parse_integer(request, "size_gt", default=0, negative=False)
+        before_ts = parse_integer(request, "before_ts", required=True)
+        size_gt = parse_integer(request, "size_gt", default=0)
         keep_profiles = parse_boolean(request, "keep_profiles", default=True)
 
         if before_ts < 30000000000:  # Dec 1970 in milliseconds, Aug 2920 in seconds
@@ -377,8 +377,8 @@ class UserMediaRestServlet(RestServlet):
         if user is None:
             raise NotFoundError("Unknown user")
 
-        start = parse_integer(request, "from", default=0, negative=False)
-        limit = parse_integer(request, "limit", default=100, negative=False)
+        start = parse_integer(request, "from", default=0)
+        limit = parse_integer(request, "limit", default=100)
 
         # If neither `order_by` nor `dir` is set, set the default order
         # to newest media is on top for backward compatibility.
@@ -421,8 +421,8 @@ class UserMediaRestServlet(RestServlet):
         if user is None:
             raise NotFoundError("Unknown user")
 
-        start = parse_integer(request, "from", default=0, negative=False)
-        limit = parse_integer(request, "limit", default=100, negative=False)
+        start = parse_integer(request, "from", default=0)
+        limit = parse_integer(request, "limit", default=100)
 
         # If neither `order_by` nor `dir` is set, set the default order
         # to newest media is on top for backward compatibility.

synapse/rest/admin/rooms.py

@@ -35,6 +35,7 @@ from synapse.http.servlet import (
     ResolveRoomIdMixin,
     RestServlet,
     assert_params_in_dict,
+    parse_boolean,
     parse_enum,
     parse_integer,
     parse_json,
@@ -242,13 +243,23 @@ class ListRoomRestServlet(RestServlet):
                 errcode=Codes.INVALID_PARAM,
             )
 
+        public_rooms = parse_boolean(request, "public_rooms")
+        empty_rooms = parse_boolean(request, "empty_rooms")
+
         direction = parse_enum(request, "dir", Direction, default=Direction.FORWARDS)
         reverse_order = True if direction == Direction.BACKWARDS else False
 
         # Return list of rooms according to parameters
         rooms, total_rooms = await self.store.get_rooms_paginate(
-            start, limit, order_by, reverse_order, search_term
+            start,
+            limit,
+            order_by,
+            reverse_order,
+            search_term,
+            public_rooms,
+            empty_rooms,
         )
+
         response = {
             # next_token should be opaque, so return a value the client can parse
             "offset": start,

synapse/rest/admin/statistics.py

@@ -63,10 +63,10 @@ class UserMediaStatisticsRestServlet(RestServlet):
             ),
         )
 
-        start = parse_integer(request, "from", default=0, negative=False)
-        limit = parse_integer(request, "limit", default=100, negative=False)
-        from_ts = parse_integer(request, "from_ts", default=0, negative=False)
-        until_ts = parse_integer(request, "until_ts", negative=False)
+        start = parse_integer(request, "from", default=0)
+        limit = parse_integer(request, "limit", default=100)
+        from_ts = parse_integer(request, "from_ts", default=0)
+        until_ts = parse_integer(request, "until_ts")
 
         if until_ts is not None:
             if until_ts <= from_ts:

synapse/rest/admin/users.py

@@ -90,8 +90,8 @@ class UsersRestServletV2(RestServlet):
     async def on_GET(self, request: SynapseRequest) -> Tuple[int, JsonDict]:
         await assert_requester_is_admin(self.auth, request)
 
-        start = parse_integer(request, "from", default=0, negative=False)
-        limit = parse_integer(request, "limit", default=100, negative=False)
+        start = parse_integer(request, "from", default=0)
+        limit = parse_integer(request, "limit", default=100)
 
         user_id = parse_string(request, "user_id")
         name = parse_string(request, "name", encoding="utf-8")

synapse/rest/client/account.py

@@ -56,14 +56,14 @@ from synapse.http.servlet import (
 from synapse.http.site import SynapseRequest
 from synapse.metrics import threepid_send_requests
 from synapse.push.mailer import Mailer
-from synapse.rest.client.models import (
+from synapse.types import JsonDict
+from synapse.types.rest import RequestBodyModel
+from synapse.types.rest.client import (
     AuthenticationData,
     ClientSecretStr,
     EmailRequestTokenBody,
     MsisdnRequestTokenBody,
 )
-from synapse.rest.models import RequestBodyModel
-from synapse.types import JsonDict
 from synapse.util.msisdn import phone_number_to_msisdn
 from synapse.util.stringutils import assert_valid_client_secret, random_string
 from synapse.util.threepids import check_3pid_allowed, validate_email

synapse/rest/client/devices.py

@@ -42,9 +42,9 @@ from synapse.http.servlet import (
 )
 from synapse.http.site import SynapseRequest
 from synapse.rest.client._base import client_patterns, interactive_auth_handler
-from synapse.rest.client.models import AuthenticationData
-from synapse.rest.models import RequestBodyModel
 from synapse.types import JsonDict
+from synapse.types.rest import RequestBodyModel
+from synapse.types.rest.client import AuthenticationData
 
 if TYPE_CHECKING:
     from synapse.server import HomeServer

synapse/rest/client/directory.py

@@ -41,8 +41,8 @@ from synapse.http.servlet import (
 )
 from synapse.http.site import SynapseRequest
 from synapse.rest.client._base import client_patterns
-from synapse.rest.models import RequestBodyModel
 from synapse.types import JsonDict, RoomAlias
+from synapse.types.rest import RequestBodyModel
 
 if TYPE_CHECKING:
     from synapse.server import HomeServer

synapse/rest/client/keys.py

@@ -36,7 +36,6 @@ from synapse.http.servlet import (
 )
 from synapse.http.site import SynapseRequest
 from synapse.logging.opentracing import log_kv, set_tag
-from synapse.replication.http.devices import ReplicationUploadKeysForUserRestServlet
 from synapse.rest.client._base import client_patterns, interactive_auth_handler
 from synapse.types import JsonDict, StreamToken
 from synapse.util.cancellation import cancellable
@@ -105,13 +104,8 @@ class KeyUploadServlet(RestServlet):
         self.auth = hs.get_auth()
         self.e2e_keys_handler = hs.get_e2e_keys_handler()
         self.device_handler = hs.get_device_handler()
-
-        if hs.config.worker.worker_app is None:
-            # if main process
-            self.key_uploader = self.e2e_keys_handler.upload_keys_for_user
-        else:
-            # then a worker
-            self.key_uploader = ReplicationUploadKeysForUserRestServlet.make_client(hs)
+        self._clock = hs.get_clock()
+        self._store = hs.get_datastores().main
 
     async def on_POST(
         self, request: SynapseRequest, device_id: Optional[str]
@@ -151,9 +145,10 @@ class KeyUploadServlet(RestServlet):
                 400, "To upload keys, you must pass device_id when authenticating"
             )
 
-        result = await self.key_uploader(
+        result = await self.e2e_keys_handler.upload_keys_for_user(
             user_id=user_id, device_id=device_id, keys=body
         )
+
         return 200, result
 
 
@@ -387,44 +382,35 @@ class SigningKeyUploadServlet(RestServlet):
             master_key_updatable_without_uia,
         ) = await self.e2e_keys_handler.check_cross_signing_setup(user_id)
 
-        # Before MSC3967 we required UIA both when setting up cross signing for the
-        # first time and when resetting the device signing key. With MSC3967 we only
-        # require UIA when resetting cross-signing, and not when setting up the first
-        # time. Because there is no UIA in MSC3861, for now we throw an error if the
-        # user tries to reset the device signing key when MSC3861 is enabled, but allow
-        # first-time setup.
-        if self.hs.config.experimental.msc3861.enabled:
-            # The auth service has to explicitly mark the master key as replaceable
-            # without UIA to reset the device signing key with MSC3861.
-            if is_cross_signing_setup and not master_key_updatable_without_uia:
-                config = self.hs.config.experimental.msc3861
-                if config.account_management_url is not None:
-                    url = f"{config.account_management_url}?action=org.matrix.cross_signing_reset"
-                else:
-                    url = config.issuer
+        # Resending exactly the same keys should just 200 OK without doing a UIA prompt.
+        keys_are_different = await self.e2e_keys_handler.has_different_keys(
+            user_id, body
+        )
+        if not keys_are_different:
+            return 200, {}
 
-                raise SynapseError(
-                    HTTPStatus.NOT_IMPLEMENTED,
-                    "To reset your end-to-end encryption cross-signing identity, "
-                    f"you first need to approve it at {url} and then try again.",
-                    Codes.UNRECOGNIZED,
-                )
-            # But first-time setup is fine
+        # The keys are different; is x-signing set up? If no, then this is first-time
+        # setup, and that is allowed without UIA, per MSC3967.
+        # If yes, then we need to authenticate the change.
+        if is_cross_signing_setup:
+            # With MSC3861, UIA is not possible. Instead, the auth service has to
+            # explicitly mark the master key as replaceable.
+            if self.hs.config.experimental.msc3861.enabled:
+                if not master_key_updatable_without_uia:
+                    config = self.hs.config.experimental.msc3861
+                    if config.account_management_url is not None:
+                        url = f"{config.account_management_url}?action=org.matrix.cross_signing_reset"
+                    else:
+                        url = config.issuer
 
-        elif self.hs.config.experimental.msc3967_enabled:
-            # MSC3967 allows this endpoint to 200 OK for idempotency. Resending exactly the same
-            # keys should just 200 OK without doing a UIA prompt.
-            keys_are_different = await self.e2e_keys_handler.has_different_keys(
-                user_id, body
-            )
-            if not keys_are_different:
-                # FIXME: we do not fallthrough to upload_signing_keys_for_user because confusingly
-                # if we do, we 500 as it looks like it tries to INSERT the same key twice, causing a
-                # unique key constraint violation. This sounds like a bug?
-                return 200, {}
-            # the keys are different, is x-signing set up? If no, then the keys don't exist which is
-            # why they are different. If yes, then we need to UIA to change them.
-            if is_cross_signing_setup:
+                    raise SynapseError(
+                        HTTPStatus.NOT_IMPLEMENTED,
+                        "To reset your end-to-end encryption cross-signing identity, "
+                        f"you first need to approve it at {url} and then try again.",
+                        Codes.UNRECOGNIZED,
+                    )
+            else:
+                # Without MSC3861, we require UIA.
                 await self.auth_handler.validate_user_via_ui_auth(
                     requester,
                     request,
@@ -433,18 +419,6 @@ class SigningKeyUploadServlet(RestServlet):
                     # Do not allow skipping of UIA auth.
                     can_skip_ui_auth=False,
                 )
-            # Otherwise we don't require UIA since we are setting up cross signing for first time
-        else:
-            # Previous behaviour is to always require UIA but allow it to be skipped
-            await self.auth_handler.validate_user_via_ui_auth(
-                requester,
-                request,
-                body,
-                "add a device signing key to your account",
-                # Allow skipping of UI auth since this is frequently called directly
-                # after login and it is silly to ask users to re-auth immediately.
-                can_skip_ui_auth=True,
-            )
 
         result = await self.e2e_keys_handler.upload_signing_keys_for_user(user_id, body)
         return 200, result

synapse/rest/client/knock.py

@@ -53,6 +53,7 @@ class KnockRoomAliasServlet(RestServlet):
         super().__init__()
         self.room_member_handler = hs.get_room_member_handler()
         self.auth = hs.get_auth()
+        self._support_via = hs.config.experimental.msc4156_enabled
 
     async def on_POST(
         self,
@@ -74,6 +75,13 @@ class KnockRoomAliasServlet(RestServlet):
             remote_room_hosts = parse_strings_from_args(
                 args, "server_name", required=False
             )
+            if self._support_via:
+                remote_room_hosts = parse_strings_from_args(
+                    args,
+                    "org.matrix.msc4156.via",
+                    default=remote_room_hosts,
+                    required=False,
+                )
         elif RoomAlias.is_valid(room_identifier):
             handler = self.room_member_handler
             room_alias = RoomAlias.from_string(room_identifier)

synapse/rest/client/media.py

@@ -174,6 +174,7 @@ class UnstableThumbnailResource(RestServlet):
                 respond_404(request)
                 return
 
+            ip_address = request.getClientAddress().host
             remote_resp_function = (
                 self.thumbnailer.select_or_generate_remote_thumbnail
                 if self.dynamic_thumbnails
@@ -188,6 +189,7 @@ class UnstableThumbnailResource(RestServlet):
                 method,
                 m_type,
                 max_timeout_ms,
+                ip_address,
             )
             self.media_repo.mark_recently_accessed(server_name, media_id)
 

synapse/rest/client/models.py

@@ -1,99 +0,0 @@
-#
-# This file is licensed under the Affero General Public License (AGPL) version 3.
-#
-# Copyright 2022 The Matrix.org Foundation C.I.C.
-# Copyright (C) 2023 New Vector, Ltd
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# See the GNU Affero General Public License for more details:
-# <https://www.gnu.org/licenses/agpl-3.0.html>.
-#
-# Originally licensed under the Apache License, Version 2.0:
-# <http://www.apache.org/licenses/LICENSE-2.0>.
-#
-# [This file includes modifications made by New Vector Limited]
-#
-#
-from typing import TYPE_CHECKING, Dict, Optional
-
-from synapse._pydantic_compat import HAS_PYDANTIC_V2
-
-if TYPE_CHECKING or HAS_PYDANTIC_V2:
-    from pydantic.v1 import Extra, StrictInt, StrictStr, constr, validator
-else:
-    from pydantic import Extra, StrictInt, StrictStr, constr, validator
-
-from synapse.rest.models import RequestBodyModel
-from synapse.util.threepids import validate_email
-
-
-class AuthenticationData(RequestBodyModel):
-    """
-    Data used during user-interactive authentication.
-
-    (The name "Authentication Data" is taken directly from the spec.)
-
-    Additional keys will be present, depending on the `type` field. Use
-    `.dict(exclude_unset=True)` to access them.
-    """
-
-    class Config:
-        extra = Extra.allow
-
-    session: Optional[StrictStr] = None
-    type: Optional[StrictStr] = None
-
-
-if TYPE_CHECKING:
-    ClientSecretStr = StrictStr
-else:
-    # See also assert_valid_client_secret()
-    ClientSecretStr = constr(
-        regex="[0-9a-zA-Z.=_-]",  # noqa: F722
-        min_length=1,
-        max_length=255,
-        strict=True,
-    )
-
-
-class ThreepidRequestTokenBody(RequestBodyModel):
-    client_secret: ClientSecretStr
-    id_server: Optional[StrictStr]
-    id_access_token: Optional[StrictStr]
-    next_link: Optional[StrictStr]
-    send_attempt: StrictInt
-
-    @validator("id_access_token", always=True)
-    def token_required_for_identity_server(
-        cls, token: Optional[str], values: Dict[str, object]
-    ) -> Optional[str]:
-        if values.get("id_server") is not None and token is None:
-            raise ValueError("id_access_token is required if an id_server is supplied.")
-        return token
-
-
-class EmailRequestTokenBody(ThreepidRequestTokenBody):
-    email: StrictStr
-
-    # Canonicalise the email address. The addresses are all stored canonicalised
-    # in the database. This allows the user to reset his password without having to
-    # know the exact spelling (eg. upper and lower case) of address in the database.
-    # Without this, an email stored in the database as "foo@bar.com" would cause
-    # user requests for "FOO@bar.com" to raise a Not Found error.
-    _email_validator = validator("email", allow_reuse=True)(validate_email)
-
-
-if TYPE_CHECKING:
-    ISO3116_1_Alpha_2 = StrictStr
-else:
-    # Per spec: two-letter uppercase ISO-3166-1-alpha-2
-    ISO3116_1_Alpha_2 = constr(regex="[A-Z]{2}", strict=True)
-
-
-class MsisdnRequestTokenBody(ThreepidRequestTokenBody):
-    country: ISO3116_1_Alpha_2
-    phone_number: StrictStr

synapse/rest/client/notifications.py

@@ -32,6 +32,7 @@ from synapse.http.servlet import RestServlet, parse_integer, parse_string
 from synapse.http.site import SynapseRequest
 from synapse.types import JsonDict
 
+from ...api.errors import SynapseError
 from ._base import client_patterns
 
 if TYPE_CHECKING:
@@ -56,7 +57,22 @@ class NotificationsServlet(RestServlet):
         requester = await self.auth.get_user_by_req(request)
         user_id = requester.user.to_string()
 
-        from_token = parse_string(request, "from", required=False)
+        # While this is intended to be "string" to clients, the 'from' token
+        # is actually based on a numeric ID. So it must parse to an int.
+        from_token_str = parse_string(request, "from", required=False)
+        if from_token_str is not None:
+            # Parse to an integer.
+            try:
+                from_token = int(from_token_str)
+            except ValueError:
+                # If it doesn't parse to an integer, then this cannot possibly be a valid
+                # pagination token, as we only hand out integers.
+                raise SynapseError(
+                    400, 'Query parameter "from" contains unrecognised token'
+                )
+        else:
+            from_token = None
+
         limit = parse_integer(request, "limit", default=50)
         only = parse_string(request, "only", required=False)
 

synapse/rest/client/reporting.py

@@ -23,17 +23,28 @@ import logging
 from http import HTTPStatus
 from typing import TYPE_CHECKING, Tuple
 
+from synapse._pydantic_compat import HAS_PYDANTIC_V2
 from synapse.api.errors import AuthError, Codes, NotFoundError, SynapseError
 from synapse.http.server import HttpServer
-from synapse.http.servlet import RestServlet, parse_json_object_from_request
+from synapse.http.servlet import (
+    RestServlet,
+    parse_and_validate_json_object_from_request,
+    parse_json_object_from_request,
+)
 from synapse.http.site import SynapseRequest
 from synapse.types import JsonDict
+from synapse.types.rest import RequestBodyModel
 
 from ._base import client_patterns
 
 if TYPE_CHECKING:
     from synapse.server import HomeServer
 
+if TYPE_CHECKING or HAS_PYDANTIC_V2:
+    from pydantic.v1 import StrictStr
+else:
+    from pydantic import StrictStr
+
 logger = logging.getLogger(__name__)
 
 
@@ -95,5 +106,57 @@ class ReportEventRestServlet(RestServlet):
         return 200, {}
 
 
+class ReportRoomRestServlet(RestServlet):
+    """This endpoint lets clients report a room for abuse.
+
+    Whilst MSC4151 is not yet merged, this unstable endpoint is enabled on matrix.org
+    for content moderation purposes, and therefore backwards compatibility should be
+    carefully considered when changing anything on this endpoint.
+
+    More details on the MSC: https://github.com/matrix-org/matrix-spec-proposals/pull/4151
+    """
+
+    PATTERNS = client_patterns(
+        "/org.matrix.msc4151/rooms/(?P<room_id>[^/]*)/report$",
+        releases=[],
+        v1=False,
+        unstable=True,
+    )
+
+    def __init__(self, hs: "HomeServer"):
+        super().__init__()
+        self.hs = hs
+        self.auth = hs.get_auth()
+        self.clock = hs.get_clock()
+        self.store = hs.get_datastores().main
+
+    class PostBody(RequestBodyModel):
+        reason: StrictStr
+
+    async def on_POST(
+        self, request: SynapseRequest, room_id: str
+    ) -> Tuple[int, JsonDict]:
+        requester = await self.auth.get_user_by_req(request)
+        user_id = requester.user.to_string()
+
+        body = parse_and_validate_json_object_from_request(request, self.PostBody)
+
+        room = await self.store.get_room(room_id)
+        if room is None:
+            raise NotFoundError("Room does not exist")
+
+        await self.store.add_room_report(
+            room_id=room_id,
+            user_id=user_id,
+            reason=body.reason,
+            received_ts=self.clock.time_msec(),
+        )
+
+        return 200, {}
+
+
 def register_servlets(hs: "HomeServer", http_server: HttpServer) -> None:
     ReportEventRestServlet(hs).register(http_server)
+
+    if hs.config.experimental.msc4151_enabled:
+        ReportRoomRestServlet(hs).register(http_server)

synapse/rest/client/room.py

@@ -292,6 +292,9 @@ class RoomStateEventRestServlet(RestServlet):
         try:
             if event_type == EventTypes.Member:
                 membership = content.get("membership", None)
+                if not isinstance(membership, str):
+                    raise SynapseError(400, "Invalid membership (must be a string)")
+
                 event_id, _ = await self.room_member_handler.update_membership(
                     requester,
                     target=UserID.from_string(state_key),
@@ -414,6 +417,7 @@ class JoinRoomAliasServlet(ResolveRoomIdMixin, TransactionRestServlet):
         super().__init__(hs)
         super(ResolveRoomIdMixin, self).__init__(hs)  # ensure the Mixin is set up
         self.auth = hs.get_auth()
+        self._support_via = hs.config.experimental.msc4156_enabled
 
     def register(self, http_server: HttpServer) -> None:
         # /join/$room_identifier[/$txn_id]
@@ -432,6 +436,13 @@ class JoinRoomAliasServlet(ResolveRoomIdMixin, TransactionRestServlet):
         # twisted.web.server.Request.args is incorrectly defined as Optional[Any]
         args: Dict[bytes, List[bytes]] = request.args  # type: ignore
         remote_room_hosts = parse_strings_from_args(args, "server_name", required=False)
+        if self._support_via:
+            remote_room_hosts = parse_strings_from_args(
+                args,
+                "org.matrix.msc4156.via",
+                default=remote_room_hosts,
+                required=False,
+            )
         room_id, remote_room_hosts = await self.resolve_room_id(
             room_identifier,
             remote_room_hosts,
@@ -499,7 +510,7 @@ class PublicRoomListRestServlet(RestServlet):
             if server:
                 raise e
 
-        limit: Optional[int] = parse_integer(request, "limit", 0, negative=False)
+        limit: Optional[int] = parse_integer(request, "limit", 0)
         since_token = parse_string(request, "since")
 
         if limit == 0:
@@ -1419,16 +1430,7 @@ class RoomHierarchyRestServlet(RestServlet):
         requester = await self._auth.get_user_by_req(request, allow_guest=True)
 
         max_depth = parse_integer(request, "max_depth")
-        if max_depth is not None and max_depth < 0:
-            raise SynapseError(
-                400, "'max_depth' must be a non-negative integer", Codes.BAD_JSON
-            )
-
         limit = parse_integer(request, "limit")
-        if limit is not None and limit <= 0:
-            raise SynapseError(
-                400, "'limit' must be a positive integer", Codes.BAD_JSON
-            )
 
         return 200, await self._room_summary_handler.get_room_hierarchy(
             requester,

synapse/rest/client/sync.py

@@ -33,6 +33,7 @@ from synapse.events.utils import (
     format_event_raw,
 )
 from synapse.handlers.presence import format_user_presence_state
+from synapse.handlers.sliding_sync import SlidingSyncConfig, SlidingSyncResult
 from synapse.handlers.sync import (
     ArchivedSyncResult,
     InvitedSyncResult,
@@ -43,10 +44,17 @@ from synapse.handlers.sync import (
     SyncVersion,
 )
 from synapse.http.server import HttpServer
-from synapse.http.servlet import RestServlet, parse_boolean, parse_integer, parse_string
+from synapse.http.servlet import (
+    RestServlet,
+    parse_and_validate_json_object_from_request,
+    parse_boolean,
+    parse_integer,
+    parse_string,
+)
 from synapse.http.site import SynapseRequest
 from synapse.logging.opentracing import trace_with_opname
 from synapse.types import JsonDict, Requester, StreamToken
+from synapse.types.rest.client import SlidingSyncBody
 from synapse.util import json_decoder
 from synapse.util.caches.lrucache import LruCache
 
@@ -735,8 +743,228 @@ class SlidingSyncE2eeRestServlet(RestServlet):
         return 200, response
 
 
+class SlidingSyncRestServlet(RestServlet):
+    """
+    API endpoint for MSC3575 Sliding Sync `/sync`. Allows for clients to request a
+    subset (sliding window) of rooms, state, and timeline events (just what they need)
+    in order to bootstrap quickly and subscribe to only what the client cares about.
+    Because the client can specify what it cares about, we can respond quickly and skip
+    all of the work we would normally have to do with a sync v2 response.
+
+    Request query parameters:
+        timeout: How long to wait for new events in milliseconds.
+        pos: Stream position token when asking for incremental deltas.
+
+    Request body::
+        {
+            // Sliding Window API
+            "lists": {
+                "foo-list": {
+                    "ranges": [ [0, 99] ],
+                    "sort": [ "by_notification_level", "by_recency", "by_name" ],
+                    "required_state": [
+                        ["m.room.join_rules", ""],
+                        ["m.room.history_visibility", ""],
+                        ["m.space.child", "*"]
+                    ],
+                    "timeline_limit": 10,
+                    "filters": {
+                        "is_dm": true
+                    },
+                    "bump_event_types": [ "m.room.message", "m.room.encrypted" ],
+                }
+            },
+            // Room Subscriptions API
+            "room_subscriptions": {
+                "!sub1:bar": {
+                    "required_state": [ ["*","*"] ],
+                    "timeline_limit": 10,
+                    "include_old_rooms": {
+                        "timeline_limit": 1,
+                        "required_state": [ ["m.room.tombstone", ""], ["m.room.create", ""] ],
+                    }
+                }
+            },
+            // Extensions API
+            "extensions": {}
+        }
+
+    Response JSON::
+        {
+            "next_pos": "s58_224_0_13_10_1_1_16_0_1",
+            "lists": {
+                "foo-list": {
+                    "count": 1337,
+                    "ops": [{
+                        "op": "SYNC",
+                        "range": [0, 99],
+                        "room_ids": [
+                            "!foo:bar",
+                            // ... 99 more room IDs
+                        ]
+                    }]
+                }
+            },
+            // Aggregated rooms from lists and room subscriptions
+            "rooms": {
+                // Room from room subscription
+                "!sub1:bar": {
+                    "name": "Alice and Bob",
+                    "avatar": "mxc://...",
+                    "initial": true,
+                    "required_state": [
+                        {"sender":"@alice:example.com","type":"m.room.create", "state_key":"", "content":{"creator":"@alice:example.com"}},
+                        {"sender":"@alice:example.com","type":"m.room.join_rules", "state_key":"", "content":{"join_rule":"invite"}},
+                        {"sender":"@alice:example.com","type":"m.room.history_visibility", "state_key":"", "content":{"history_visibility":"joined"}},
+                        {"sender":"@alice:example.com","type":"m.room.member", "state_key":"@alice:example.com", "content":{"membership":"join"}}
+                    ],
+                    "timeline": [
+                        {"sender":"@alice:example.com","type":"m.room.create", "state_key":"", "content":{"creator":"@alice:example.com"}},
+                        {"sender":"@alice:example.com","type":"m.room.join_rules", "state_key":"", "content":{"join_rule":"invite"}},
+                        {"sender":"@alice:example.com","type":"m.room.history_visibility", "state_key":"", "content":{"history_visibility":"joined"}},
+                        {"sender":"@alice:example.com","type":"m.room.member", "state_key":"@alice:example.com", "content":{"membership":"join"}},
+                        {"sender":"@alice:example.com","type":"m.room.message", "content":{"body":"A"}},
+                        {"sender":"@alice:example.com","type":"m.room.message", "content":{"body":"B"}},
+                    ],
+                    "prev_batch": "t111_222_333",
+                    "joined_count": 41,
+                    "invited_count": 1,
+                    "notification_count": 1,
+                    "highlight_count": 0
+                },
+                // rooms from list
+                "!foo:bar": {
+                    "name": "The calculated room name",
+                    "avatar": "mxc://...",
+                    "initial": true,
+                    "required_state": [
+                        {"sender":"@alice:example.com","type":"m.room.join_rules", "state_key":"", "content":{"join_rule":"invite"}},
+                        {"sender":"@alice:example.com","type":"m.room.history_visibility", "state_key":"", "content":{"history_visibility":"joined"}},
+                        {"sender":"@alice:example.com","type":"m.space.child", "state_key":"!foo:example.com", "content":{"via":["example.com"]}},
+                        {"sender":"@alice:example.com","type":"m.space.child", "state_key":"!bar:example.com", "content":{"via":["example.com"]}},
+                        {"sender":"@alice:example.com","type":"m.space.child", "state_key":"!baz:example.com", "content":{"via":["example.com"]}}
+                    ],
+                    "timeline": [
+                        {"sender":"@alice:example.com","type":"m.room.join_rules", "state_key":"", "content":{"join_rule":"invite"}},
+                        {"sender":"@alice:example.com","type":"m.room.message", "content":{"body":"A"}},
+                        {"sender":"@alice:example.com","type":"m.room.message", "content":{"body":"B"}},
+                        {"sender":"@alice:example.com","type":"m.room.message", "content":{"body":"C"}},
+                        {"sender":"@alice:example.com","type":"m.room.message", "content":{"body":"D"}},
+                    ],
+                    "prev_batch": "t111_222_333",
+                    "joined_count": 4,
+                    "invited_count": 0,
+                    "notification_count": 54,
+                    "highlight_count": 3
+                },
+                 // ... 99 more items
+            },
+            "extensions": {}
+        }
+    """
+
+    PATTERNS = client_patterns(
+        "/org.matrix.simplified_msc3575/sync$", releases=[], v1=False, unstable=True
+    )
+
+    def __init__(self, hs: "HomeServer"):
+        super().__init__()
+        self.auth = hs.get_auth()
+        self.store = hs.get_datastores().main
+        self.filtering = hs.get_filtering()
+        self.sliding_sync_handler = hs.get_sliding_sync_handler()
+
+    # TODO: Update this to `on_GET` once we figure out how we want to handle params
+    async def on_POST(self, request: SynapseRequest) -> Tuple[int, JsonDict]:
+        requester = await self.auth.get_user_by_req(request, allow_guest=True)
+        user = requester.user
+        device_id = requester.device_id
+
+        timeout = parse_integer(request, "timeout", default=0)
+        # Position in the stream
+        from_token_string = parse_string(request, "pos")
+
+        from_token = None
+        if from_token_string is not None:
+            from_token = await StreamToken.from_string(self.store, from_token_string)
+
+        # TODO: We currently don't know whether we're going to use sticky params or
+        # maybe some filters like sync v2  where they are built up once and referenced
+        # by filter ID. For now, we will just prototype with always passing everything
+        # in.
+        body = parse_and_validate_json_object_from_request(request, SlidingSyncBody)
+        logger.info("Sliding sync request: %r", body)
+
+        sync_config = SlidingSyncConfig(
+            user=user,
+            device_id=device_id,
+            # FIXME: Currently, we're just manually copying the fields from the
+            # `SlidingSyncBody` into the config. How can we gurantee into the future
+            # that we don't forget any? I would like something more structured like
+            # `copy_attributes(from=body, to=config)`
+            lists=body.lists,
+            room_subscriptions=body.room_subscriptions,
+            extensions=body.extensions,
+        )
+
+        sliding_sync_results = await self.sliding_sync_handler.wait_for_sync_for_user(
+            requester,
+            sync_config,
+            from_token,
+            timeout,
+        )
+
+        # The client may have disconnected by now; don't bother to serialize the
+        # response if so.
+        if request._disconnected:
+            logger.info("Client has disconnected; not serializing response.")
+            return 200, {}
+
+        response_content = await self.encode_response(sliding_sync_results)
+
+        return 200, response_content
+
+    # TODO: Is there a better way to encode things?
+    async def encode_response(
+        self,
+        sliding_sync_result: SlidingSyncResult,
+    ) -> JsonDict:
+        response: JsonDict = defaultdict(dict)
+
+        response["next_pos"] = await sliding_sync_result.next_pos.to_string(self.store)
+        serialized_lists = self.encode_lists(sliding_sync_result.lists)
+        if serialized_lists:
+            response["lists"] = serialized_lists
+        response["rooms"] = {}  # TODO: sliding_sync_result.rooms
+        response["extensions"] = {}  # TODO: sliding_sync_result.extensions
+
+        return response
+
+    def encode_lists(
+        self, lists: Dict[str, SlidingSyncResult.SlidingWindowList]
+    ) -> JsonDict:
+        def encode_operation(
+            operation: SlidingSyncResult.SlidingWindowList.Operation,
+        ) -> JsonDict:
+            return {
+                "op": operation.op.value,
+                "range": operation.range,
+                "room_ids": operation.room_ids,
+            }
+
+        serialized_lists = {}
+        for list_key, list_result in lists.items():
+            serialized_lists[list_key] = {
+                "count": list_result.count,
+                "ops": [encode_operation(op) for op in list_result.ops],
+            }
+
+        return serialized_lists
+
+
 def register_servlets(hs: "HomeServer", http_server: HttpServer) -> None:
     SyncRestServlet(hs).register(http_server)
 
     if hs.config.experimental.msc3575_enabled:
+        SlidingSyncRestServlet(hs).register(http_server)
         SlidingSyncE2eeRestServlet(hs).register(http_server)

synapse/rest/client/versions.py

@@ -149,6 +149,8 @@ class VersionsRestServlet(RestServlet):
                             is not None
                         )
                     ),
+                    # MSC4151: Report room API (Client-Server API)
+                    "org.matrix.msc4151": self.config.experimental.msc4151_enabled,
                 },
             },
         )

synapse/rest/key/v2/remote_key_resource.py

@@ -41,9 +41,9 @@ from synapse.http.servlet import (
     parse_and_validate_json_object_from_request,
     parse_integer,
 )
-from synapse.rest.models import RequestBodyModel
 from synapse.storage.keys import FetchKeyResultForRemote
 from synapse.types import JsonDict
+from synapse.types.rest import RequestBodyModel
 from synapse.util import json_decoder
 from synapse.util.async_helpers import yieldable_gather_results
 

synapse/rest/media/download_resource.py

@@ -97,6 +97,12 @@ class DownloadResource(RestServlet):
                 respond_404(request)
                 return
 
+            ip_address = request.getClientAddress().host
             await self.media_repo.get_remote_media(
-                request, server_name, media_id, file_name, max_timeout_ms
+                request,
+                server_name,
+                media_id,
+                file_name,
+                max_timeout_ms,
+                ip_address,
             )

synapse/rest/media/thumbnail_resource.py

@@ -104,6 +104,7 @@ class ThumbnailResource(RestServlet):
                 respond_404(request)
                 return
 
+            ip_address = request.getClientAddress().host
             remote_resp_function = (
                 self.thumbnail_provider.select_or_generate_remote_thumbnail
                 if self.dynamic_thumbnails
@@ -118,5 +119,6 @@ class ThumbnailResource(RestServlet):
                 method,
                 m_type,
                 max_timeout_ms,
+                ip_address,
             )
             self.media_repo.mark_recently_accessed(server_name, media_id)

synapse/server.py

@@ -109,6 +109,7 @@ from synapse.handlers.room_summary import RoomSummaryHandler
 from synapse.handlers.search import SearchHandler
 from synapse.handlers.send_email import SendEmailHandler
 from synapse.handlers.set_password import SetPasswordHandler
+from synapse.handlers.sliding_sync import SlidingSyncHandler
 from synapse.handlers.sso import SsoHandler
 from synapse.handlers.stats import StatsHandler
 from synapse.handlers.sync import SyncHandler
@@ -554,6 +555,9 @@ class HomeServer(metaclass=abc.ABCMeta):
     def get_sync_handler(self) -> SyncHandler:
         return SyncHandler(self)
 
+    def get_sliding_sync_handler(self) -> SlidingSyncHandler:
+        return SlidingSyncHandler(self)
+
     @cache_in_self
     def get_room_list_handler(self) -> RoomListHandler:
         return RoomListHandler(self)

synapse/storage/controllers/state.py

@@ -45,7 +45,7 @@ from synapse.storage.util.partial_state_events_tracker import (
     PartialStateEventsTracker,
 )
 from synapse.synapse_rust.acl import ServerAclEvaluator
-from synapse.types import MutableStateMap, StateMap, get_domain_from_id
+from synapse.types import MutableStateMap, StateMap, StreamToken, get_domain_from_id
 from synapse.types.state import StateFilter
 from synapse.util.async_helpers import Linearizer
 from synapse.util.caches import intern_string
@@ -372,6 +372,91 @@ class StateStorageController:
         )
         return state_map[event_id]
 
+    async def get_state_after_event(
+        self,
+        event_id: str,
+        state_filter: Optional[StateFilter] = None,
+        await_full_state: bool = True,
+    ) -> StateMap[str]:
+        """
+        Get the room state after the given event
+
+        Args:
+            event_id: event of interest
+            state_filter: The state filter used to fetch state from the database.
+            await_full_state: if `True`, will block if we do not yet have complete state
+                at the event and `state_filter` is not satisfied by partial state.
+                Defaults to `True`.
+        """
+        state_ids = await self.get_state_ids_for_event(
+            event_id,
+            state_filter=state_filter or StateFilter.all(),
+            await_full_state=await_full_state,
+        )
+
+        # using get_metadata_for_events here (instead of get_event) sidesteps an issue
+        # with redactions: if `event_id` is a redaction event, and we don't have the
+        # original (possibly because it got purged), get_event will refuse to return
+        # the redaction event, which isn't terribly helpful here.
+        #
+        # (To be fair, in that case we could assume it's *not* a state event, and
+        # therefore we don't need to worry about it. But still, it seems cleaner just
+        # to pull the metadata.)
+        m = (await self.stores.main.get_metadata_for_events([event_id]))[event_id]
+        if m.state_key is not None and m.rejection_reason is None:
+            state_ids = dict(state_ids)
+            state_ids[(m.event_type, m.state_key)] = event_id
+
+        return state_ids
+
+    async def get_state_at(
+        self,
+        room_id: str,
+        stream_position: StreamToken,
+        state_filter: Optional[StateFilter] = None,
+        await_full_state: bool = True,
+    ) -> StateMap[str]:
+        """Get the room state at a particular stream position
+
+        Args:
+            room_id: room for which to get state
+            stream_position: point at which to get state
+            state_filter: The state filter used to fetch state from the database.
+            await_full_state: if `True`, will block if we do not yet have complete state
+                at the last event in the room before `stream_position` and
+                `state_filter` is not satisfied by partial state. Defaults to `True`.
+        """
+        # FIXME: This gets the state at the latest event before the stream ordering,
+        # which might not be the same as the "current state" of the room at the time
+        # of the stream token if there were multiple forward extremities at the time.
+        last_event_id = (
+            await self.stores.main.get_last_event_id_in_room_before_stream_ordering(
+                room_id,
+                end_token=stream_position.room_key,
+            )
+        )
+
+        if last_event_id:
+            state = await self.get_state_after_event(
+                last_event_id,
+                state_filter=state_filter or StateFilter.all(),
+                await_full_state=await_full_state,
+            )
+
+        else:
+            # no events in this room - so presumably no state
+            state = {}
+
+            # (erikj) This should be rarely hit, but we've had some reports that
+            # we get more state down gappy syncs than we should, so let's add
+            # some logging.
+            logger.info(
+                "Failed to find any events in room %s at %s",
+                room_id,
+                stream_position.room_key,
+            )
+        return state
+
     @trace
     @tag_args
     async def get_state_for_groups(

synapse/storage/databases/main/event_push_actions.py

@@ -1829,7 +1829,7 @@ class EventPushActionsWorkerStore(ReceiptsWorkerStore, StreamWorkerStore, SQLBas
     async def get_push_actions_for_user(
         self,
         user_id: str,
-        before: Optional[str] = None,
+        before: Optional[int] = None,
         limit: int = 50,
         only_highlight: bool = False,
     ) -> List[UserPushAction]: