Only check for all rooms if not outbound poke

It's almost always more efficient to query the rooms that have device
list changes, rather than looking at the list of all users whose devices
have changed and then look for shared rooms.

.github/workflows/docker.yml

@@ -30,7 +30,7 @@ jobs:
         run: docker buildx inspect
 
       - name: Install Cosign
-        uses: sigstore/cosign-installer@v3.4.0
+        uses: sigstore/cosign-installer@v3.5.0
 
       - name: Checkout repository
         uses: actions/checkout@v4

.github/workflows/docs-pr.yaml

@@ -19,7 +19,7 @@ jobs:
           fetch-depth: 0
 
       - name: Setup mdbook
-        uses: peaceiris/actions-mdbook@adeb05db28a0c0004681db83893d56c0388ea9ea # v1.2.0
+        uses: peaceiris/actions-mdbook@ee69d230fe19748b7abf22df32acaa93833fad08 # v2.0.0
         with:
           mdbook-version: '0.4.17'
 
@@ -53,7 +53,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Setup mdbook
-        uses: peaceiris/actions-mdbook@adeb05db28a0c0004681db83893d56c0388ea9ea # v1.2.0
+        uses: peaceiris/actions-mdbook@ee69d230fe19748b7abf22df32acaa93833fad08 # v2.0.0
         with:
           mdbook-version: '0.4.17'
 

.github/workflows/docs.yaml

@@ -56,7 +56,7 @@ jobs:
           fetch-depth: 0
 
       - name: Setup mdbook
-        uses: peaceiris/actions-mdbook@adeb05db28a0c0004681db83893d56c0388ea9ea # v1.2.0
+        uses: peaceiris/actions-mdbook@ee69d230fe19748b7abf22df32acaa93833fad08 # v2.0.0
         with:
           mdbook-version: '0.4.17'
 
@@ -80,38 +80,8 @@ jobs:
 
       # Deploy to the target directory.
       - name: Deploy to gh pages
-        uses: peaceiris/actions-gh-pages@373f7f263a76c20808c831209c920827a82a2847 # v3.9.3
+        uses: peaceiris/actions-gh-pages@4f9cc6602d3f66b9c108549d475ec49e8ef4d45e # v4.0.0
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: ./book
           destination_dir: ./${{ needs.pre.outputs.branch-version }}
-
-################################################################################
-  pages-devdocs:
-    name: GitHub Pages (developer docs)
-    runs-on: ubuntu-latest
-    needs:
-      - pre
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: "Set up Sphinx"
-        uses: matrix-org/setup-python-poetry@v1
-        with:
-          python-version: "3.x"
-          poetry-version: "1.3.2"
-          groups: "dev-docs"
-          extras: ""
-
-      - name: Build the documentation
-        run: |
-          cd dev-docs
-          poetry run make html
-
-      # Deploy to the target directory.
-      - name: Deploy to gh pages
-        uses: peaceiris/actions-gh-pages@373f7f263a76c20808c831209c920827a82a2847 # v3.9.3
-        with:
-          github_token: ${{ secrets.GITHUB_TOKEN }}
-          publish_dir: ./dev-docs/_build/html
-          destination_dir: ./dev-docs/${{ needs.pre.outputs.branch-version }}

.github/workflows/tests.yml

@@ -81,7 +81,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Install Rust
-        uses: dtolnay/rust-toolchain@1.65.0
+        uses: dtolnay/rust-toolchain@1.66.0
       - uses: Swatinem/rust-cache@v2
       - uses: matrix-org/setup-python-poetry@v1
         with:
@@ -148,7 +148,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Install Rust
-        uses: dtolnay/rust-toolchain@1.65.0
+        uses: dtolnay/rust-toolchain@1.66.0
       - uses: Swatinem/rust-cache@v2
 
       - name: Setup Poetry
@@ -208,7 +208,7 @@ jobs:
         with:
           ref: ${{ github.event.pull_request.head.sha }}
       - name: Install Rust
-        uses: dtolnay/rust-toolchain@1.65.0
+        uses: dtolnay/rust-toolchain@1.66.0
       - uses: Swatinem/rust-cache@v2
       - uses: matrix-org/setup-python-poetry@v1
         with:
@@ -225,7 +225,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Rust
-        uses: dtolnay/rust-toolchain@1.65.0
+        uses: dtolnay/rust-toolchain@1.66.0
         with:
             components: clippy
       - uses: Swatinem/rust-cache@v2
@@ -344,7 +344,7 @@ jobs:
             postgres:${{ matrix.job.postgres-version }}
 
       - name: Install Rust
-        uses: dtolnay/rust-toolchain@1.65.0
+        uses: dtolnay/rust-toolchain@1.66.0
       - uses: Swatinem/rust-cache@v2
 
       - uses: matrix-org/setup-python-poetry@v1
@@ -386,7 +386,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Rust
-        uses: dtolnay/rust-toolchain@1.65.0
+        uses: dtolnay/rust-toolchain@1.66.0
       - uses: Swatinem/rust-cache@v2
 
       # There aren't wheels for some of the older deps, so we need to install
@@ -498,7 +498,7 @@ jobs:
         run: cat sytest-blacklist .ci/worker-blacklist > synapse-blacklist-with-workers
 
       - name: Install Rust
-        uses: dtolnay/rust-toolchain@1.65.0
+        uses: dtolnay/rust-toolchain@1.66.0
       - uses: Swatinem/rust-cache@v2
 
       - name: Run SyTest
@@ -642,7 +642,7 @@ jobs:
           path: synapse
 
       - name: Install Rust
-        uses: dtolnay/rust-toolchain@1.65.0
+        uses: dtolnay/rust-toolchain@1.66.0
       - uses: Swatinem/rust-cache@v2
 
       - name: Prepare Complement's Prerequisites
@@ -674,7 +674,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Rust
-        uses: dtolnay/rust-toolchain@1.65.0
+        uses: dtolnay/rust-toolchain@1.66.0
       - uses: Swatinem/rust-cache@v2
 
       - run: cargo test

CHANGES.md

@@ -1,3 +1,170 @@
+Synapse 1.107.0 (2024-05-14)
+============================
+
+No significant changes since 1.107.0rc1.
+
+
+# Synapse 1.107.0rc1 (2024-05-07)
+
+### Features
+
+- Add preliminary support for [MSC3823: Account Suspension](https://github.com/matrix-org/matrix-spec-proposals/pull/3823). ([\#17051](https://github.com/element-hq/synapse/issues/17051))
+- Declare support for [Matrix v1.10](https://matrix.org/blog/2024/03/22/matrix-v1.10-release/). Contributed by @clokep. ([\#17082](https://github.com/element-hq/synapse/issues/17082))
+- Add support for [MSC4115: membership metadata on events](https://github.com/matrix-org/matrix-spec-proposals/pull/4115). ([\#17104](https://github.com/element-hq/synapse/issues/17104), [\#17137](https://github.com/element-hq/synapse/issues/17137))
+
+### Bugfixes
+
+- Fixed search feature of Element Android on homesevers using SQLite by returning search terms as search highlights. ([\#17000](https://github.com/element-hq/synapse/issues/17000))
+- Fixes a bug introduced in v1.52.0 where the `destination` query parameter for the  [Destination Rooms Admin API](https://element-hq.github.io/synapse/v1.105/usage/administration/admin_api/federation.html#destination-rooms) failed to actually filter returned rooms. ([\#17077](https://github.com/element-hq/synapse/issues/17077))
+- For MSC3266 room summaries, support queries at the recommended endpoint of `/_matrix/client/unstable/im.nheko.summary/summary/{roomIdOrAlias}`. The existing endpoint of `/_matrix/client/unstable/im.nheko.summary/rooms/{roomIdOrAlias}/summary` is deprecated. ([\#17078](https://github.com/element-hq/synapse/issues/17078))
+- Apply user email & picture during OIDC registration if present & selected. ([\#17120](https://github.com/element-hq/synapse/issues/17120))
+- Improve error message for cross signing reset with [MSC3861](https://github.com/matrix-org/matrix-spec-proposals/pull/3861) enabled. ([\#17121](https://github.com/element-hq/synapse/issues/17121))
+- Fix a bug which meant that to-device messages received over federation could be dropped when the server was under load or networking problems caused problems between Synapse processes or the database. ([\#17127](https://github.com/element-hq/synapse/issues/17127))
+- Fix bug where `StreamChangeCache` would not respect configured cache factors. ([\#17152](https://github.com/element-hq/synapse/issues/17152))
+
+### Updates to the Docker image
+
+- Correct licensing metadata on Docker image. ([\#17141](https://github.com/element-hq/synapse/issues/17141))
+
+### Improved Documentation
+
+- Update the `event_cache_size` and `global_factor` configuration options' documentation. ([\#17071](https://github.com/element-hq/synapse/issues/17071))
+- Remove broken sphinx docs. ([\#17073](https://github.com/element-hq/synapse/issues/17073), [\#17148](https://github.com/element-hq/synapse/issues/17148))
+- Add RuntimeDirectory to example matrix-synapse.service systemd unit. ([\#17084](https://github.com/element-hq/synapse/issues/17084))
+- Fix various small typos throughout the docs. ([\#17114](https://github.com/element-hq/synapse/issues/17114))
+- Update enable_notifs configuration documentation. ([\#17116](https://github.com/element-hq/synapse/issues/17116))
+- Update the Upgrade Notes with the latest minimum supported Rust version of 1.66.0. Contributed by @jahway603. ([\#17140](https://github.com/element-hq/synapse/issues/17140))
+
+### Internal Changes
+
+- Enable [MSC3266](https://github.com/matrix-org/matrix-spec-proposals/pull/3266) by default in the Synapse Complement image. ([\#17105](https://github.com/element-hq/synapse/issues/17105))
+- Add optimisation to `StreamChangeCache.get_entities_changed(..)`. ([\#17130](https://github.com/element-hq/synapse/issues/17130))
+
+
+
+### Updates to locked dependencies
+
+* Bump furo from 2024.1.29 to 2024.4.27. ([\#17133](https://github.com/element-hq/synapse/issues/17133))
+* Bump idna from 3.6 to 3.7. ([\#17136](https://github.com/element-hq/synapse/issues/17136))
+* Bump jsonschema from 4.21.1 to 4.22.0. ([\#17157](https://github.com/element-hq/synapse/issues/17157))
+* Bump lxml from 5.1.0 to 5.2.1. ([\#17158](https://github.com/element-hq/synapse/issues/17158))
+* Bump phonenumbers from 8.13.29 to 8.13.35. ([\#17106](https://github.com/element-hq/synapse/issues/17106))
+- Bump pillow from 10.2.0 to 10.3.0. ([\#17146](https://github.com/element-hq/synapse/issues/17146))
+* Bump pydantic from 2.6.4 to 2.7.0. ([\#17107](https://github.com/element-hq/synapse/issues/17107))
+* Bump pydantic from 2.7.0 to 2.7.1. ([\#17160](https://github.com/element-hq/synapse/issues/17160))
+* Bump pyicu from 2.12 to 2.13. ([\#17109](https://github.com/element-hq/synapse/issues/17109))
+* Bump serde from 1.0.197 to 1.0.198. ([\#17111](https://github.com/element-hq/synapse/issues/17111))
+* Bump serde from 1.0.198 to 1.0.199. ([\#17132](https://github.com/element-hq/synapse/issues/17132))
+* Bump serde from 1.0.199 to 1.0.200. ([\#17161](https://github.com/element-hq/synapse/issues/17161))
+* Bump serde_json from 1.0.115 to 1.0.116. ([\#17112](https://github.com/element-hq/synapse/issues/17112))
+- Update `tornado` Python dependency from 6.2 to 6.4. ([\#17131](https://github.com/element-hq/synapse/issues/17131))
+* Bump twisted from 23.10.0 to 24.3.0. ([\#17135](https://github.com/element-hq/synapse/issues/17135))
+* Bump types-bleach from 6.1.0.1 to 6.1.0.20240331. ([\#17110](https://github.com/element-hq/synapse/issues/17110))
+* Bump types-pillow from 10.2.0.20240415 to 10.2.0.20240423. ([\#17159](https://github.com/element-hq/synapse/issues/17159))
+* Bump types-setuptools from 69.0.0.20240125 to 69.5.0.20240423. ([\#17134](https://github.com/element-hq/synapse/issues/17134))
+
+# Synapse 1.106.0 (2024-04-30)
+
+No significant changes since 1.106.0rc1.
+
+
+
+
+# Synapse 1.106.0rc1 (2024-04-25)
+
+### Features
+
+- Send an email if the address is already bound to an user account. ([\#16819](https://github.com/element-hq/synapse/issues/16819))
+- Implement the rendezvous mechanism described by [MSC4108](https://github.com/matrix-org/matrix-spec-proposals/issues/4108). ([\#17056](https://github.com/element-hq/synapse/issues/17056))
+- Support delegating the rendezvous mechanism described [MSC4108](https://github.com/matrix-org/matrix-spec-proposals/issues/4108) to an external implementation. ([\#17086](https://github.com/element-hq/synapse/issues/17086))
+
+### Bugfixes
+
+- Add validation to ensure that the `limit` parameter on `/publicRooms` is non-negative. ([\#16920](https://github.com/element-hq/synapse/issues/16920))
+- Return `400 M_NOT_JSON` upon receiving invalid JSON in query parameters across various client and admin endpoints, rather than an internal server error. ([\#16923](https://github.com/element-hq/synapse/issues/16923))
+- Make the CSAPI endpoint `/keys/device_signing/upload` idempotent. ([\#16943](https://github.com/element-hq/synapse/issues/16943))
+- Redact membership events if the user requested erasure upon deactivating. ([\#17076](https://github.com/element-hq/synapse/issues/17076))
+
+### Improved Documentation
+
+- Add a prompt in the contributing guide to manually configure icu4c. ([\#17069](https://github.com/element-hq/synapse/issues/17069))
+- Clarify what part of message retention is still experimental. ([\#17099](https://github.com/element-hq/synapse/issues/17099))
+
+### Internal Changes
+
+- Use new receipts column to optimise receipt and push action SQL queries. Contributed by Nick @ Beeper (@fizzadar). ([\#17032](https://github.com/element-hq/synapse/issues/17032), [\#17096](https://github.com/element-hq/synapse/issues/17096))
+- Fix mypy with latest Twisted release. ([\#17036](https://github.com/element-hq/synapse/issues/17036))
+- Bump minimum supported Rust version to 1.66.0. ([\#17079](https://github.com/element-hq/synapse/issues/17079))
+- Add helpers to transform Twisted requests to Rust http Requests/Responses. ([\#17081](https://github.com/element-hq/synapse/issues/17081))
+- Fix type annotation for `visited_chains` after `mypy` upgrade. ([\#17125](https://github.com/element-hq/synapse/issues/17125))
+
+
+
+### Updates to locked dependencies
+
+* Bump anyhow from 1.0.81 to 1.0.82. ([\#17095](https://github.com/element-hq/synapse/issues/17095))
+* Bump peaceiris/actions-gh-pages from 3.9.3 to 4.0.0. ([\#17087](https://github.com/element-hq/synapse/issues/17087))
+* Bump peaceiris/actions-mdbook from 1.2.0 to 2.0.0. ([\#17089](https://github.com/element-hq/synapse/issues/17089))
+* Bump pyasn1-modules from 0.3.0 to 0.4.0. ([\#17093](https://github.com/element-hq/synapse/issues/17093))
+* Bump pygithub from 2.2.0 to 2.3.0. ([\#17092](https://github.com/element-hq/synapse/issues/17092))
+* Bump ruff from 0.3.5 to 0.3.7. ([\#17094](https://github.com/element-hq/synapse/issues/17094))
+* Bump sigstore/cosign-installer from 3.4.0 to 3.5.0. ([\#17088](https://github.com/element-hq/synapse/issues/17088))
+* Bump twine from 4.0.2 to 5.0.0. ([\#17091](https://github.com/element-hq/synapse/issues/17091))
+* Bump types-pillow from 10.2.0.20240406 to 10.2.0.20240415. ([\#17090](https://github.com/element-hq/synapse/issues/17090))
+
+# Synapse 1.105.1 (2024-04-23)
+
+## Security advisory
+
+The following issues are fixed in 1.105.1.
+
+- [GHSA-3h7q-rfh9-xm4v](https://github.com/element-hq/synapse/security/advisories/GHSA-3h7q-rfh9-xm4v) / [CVE-2024-31208](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-31208) — High Severity
+
+  Weakness in auth chain indexing allows DoS from remote room members through disk fill and high CPU usage.
+
+See the advisories for more details. If you have any questions, email security@element.io.
+
+
+
+# Synapse 1.105.0 (2024-04-16)
+
+No significant changes since 1.105.0rc1.
+
+
+
+
+# Synapse 1.105.0rc1 (2024-04-11)
+
+### Features
+
+- Stabilize support for [MSC4010](https://github.com/matrix-org/matrix-spec-proposals/pull/4010) which clarifies the interaction of push rules and account data. Contributed by @clokep. ([\#17022](https://github.com/element-hq/synapse/issues/17022))
+- Stabilize support for [MSC3981](https://github.com/matrix-org/matrix-spec-proposals/pull/3981): `/relations` recursion. Contributed by @clokep. ([\#17023](https://github.com/element-hq/synapse/issues/17023))
+- Add support for moving `/pushrules` off of main process. ([\#17037](https://github.com/element-hq/synapse/issues/17037), [\#17038](https://github.com/element-hq/synapse/issues/17038))
+
+### Bugfixes
+
+- Fix various long-standing bugs which could cause incorrect state to be returned from `/sync` in certain situations. ([\#16930](https://github.com/element-hq/synapse/issues/16930), [\#16932](https://github.com/element-hq/synapse/issues/16932), [\#16942](https://github.com/element-hq/synapse/issues/16942), [\#17064](https://github.com/element-hq/synapse/issues/17064), [\#17065](https://github.com/element-hq/synapse/issues/17065), [\#17066](https://github.com/element-hq/synapse/issues/17066))
+- Fix server notice rooms not always being created as unencrypted rooms, even when `encryption_enabled_by_default_for_room_type` is in use (server notices are always unencrypted). ([\#17033](https://github.com/element-hq/synapse/issues/17033))
+- Fix the `.m.rule.encrypted_room_one_to_one` and `.m.rule.room_one_to_one` default underride push rules being in the wrong order. Contributed by @Sumpy1. ([\#17043](https://github.com/element-hq/synapse/issues/17043))
+
+### Internal Changes
+
+- Refactor auth chain fetching to reduce duplication. ([\#17044](https://github.com/element-hq/synapse/issues/17044))
+- Improve database performance by adding a missing index to `access_tokens.refresh_token_id`. ([\#17045](https://github.com/element-hq/synapse/issues/17045), [\#17054](https://github.com/element-hq/synapse/issues/17054))
+- Improve database performance by reducing number of receipts fetched when sending push notifications. ([\#17049](https://github.com/element-hq/synapse/issues/17049))
+
+
+
+### Updates to locked dependencies
+
+* Bump packaging from 23.2 to 24.0. ([\#17027](https://github.com/element-hq/synapse/issues/17027))
+* Bump regex from 1.10.3 to 1.10.4. ([\#17028](https://github.com/element-hq/synapse/issues/17028))
+* Bump ruff from 0.3.2 to 0.3.5. ([\#17060](https://github.com/element-hq/synapse/issues/17060))
+* Bump serde_json from 1.0.114 to 1.0.115. ([\#17041](https://github.com/element-hq/synapse/issues/17041))
+* Bump types-pillow from 10.2.0.20240125 to 10.2.0.20240406. ([\#17061](https://github.com/element-hq/synapse/issues/17061))
+* Bump types-requests from 2.31.0.20240125 to 2.31.0.20240406. ([\#17063](https://github.com/element-hq/synapse/issues/17063))
+* Bump typing-extensions from 4.9.0 to 4.11.0. ([\#17062](https://github.com/element-hq/synapse/issues/17062))
+
 # Synapse 1.104.0 (2024-04-02)
 
 ### Bugfixes

Cargo.lock

@@ -4,36 +4,42 @@ version = 3
 
 [[package]]
 name = "aho-corasick"
-version = "1.0.2"
+version = "1.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "43f6cb1bf222025340178f382c426f13757b2960e89779dfcb319c32542a5a41"
+checksum = "8e60d3430d3a69478ad0993f19238d2df97c507009a52b3c10addcd7f6bcb916"
 dependencies = [
  "memchr",
 ]
 
 [[package]]
 name = "anyhow"
-version = "1.0.81"
+version = "1.0.83"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0952808a6c2afd1aa8947271f3a60f1a6763c7b912d210184c5149b5cf147247"
+checksum = "25bdb32cbbdce2b519a9cd7df3a678443100e265d5e25ca763b7572a5104f5f3"
 
 [[package]]
 name = "arc-swap"
-version = "1.5.1"
+version = "1.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "983cd8b9d4b02a6dc6ffa557262eb5858a27a0038ffffe21a0f133eaa819a164"
+checksum = "69f7f8c3906b62b754cd5326047894316021dcfe5a194c8ea52bdd94934a3457"
 
 [[package]]
 name = "autocfg"
-version = "1.1.0"
+version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
+checksum = "0c4b4d0bd25bd0b74681c0ad21497610ce1b7c91b1022cd21c80c6fbdd9476b0"
+
+[[package]]
+name = "base64"
+version = "0.21.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9d297deb1925b89f2ccc13d7635fa0714f12c87adce1c75356b39ca9b7178567"
 
 [[package]]
 name = "bitflags"
-version = "1.3.2"
+version = "2.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
+checksum = "cf4b9d6a944f767f8e5e0db018570623c85f3d925ac718db4e06d0187adb21c1"
 
 [[package]]
 name = "blake2"
@@ -46,19 +52,40 @@ dependencies = [
 
 [[package]]
 name = "block-buffer"
-version = "0.10.3"
+version = "0.10.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "69cce20737498f97b993470a6e536b8523f0af7892a4f928cceb1ac5e52ebe7e"
+checksum = "3078c7629b62d3f0439517fa394996acacc5cbc91c5a20d8c658e77abd503a71"
 dependencies = [
  "generic-array",
 ]
 
+[[package]]
+name = "bumpalo"
+version = "3.16.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "79296716171880943b8470b5f8d03aa55eb2e645a4874bdbb28adb49162e012c"
+
+[[package]]
+name = "bytes"
+version = "1.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "514de17de45fdb8dc022b1a7975556c53c86f9f0aa5f534b98977b171857c2c9"
+
 [[package]]
 name = "cfg-if"
 version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[package]]
+name = "cpufeatures"
+version = "0.2.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "53fe5e26ff1b7aef8bca9c6080520cfb8d9333c7568e1829cef191a9723e5504"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "crypto-common"
 version = "0.1.6"
@@ -71,9 +98,9 @@ dependencies = [
 
 [[package]]
 name = "digest"
-version = "0.10.5"
+version = "0.10.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "adfbc57365a37acbd2ebf2b64d7e69bb766e2fea813521ed536f5d0520dcf86c"
+checksum = "9ed9a281f7bc9b7576e61468ba615a66a5c8cfdff42420a70aa82701a3b1e292"
 dependencies = [
  "block-buffer",
  "crypto-common",
@@ -81,15 +108,58 @@ dependencies = [
 ]
 
 [[package]]
-name = "generic-array"
-version = "0.14.6"
+name = "fnv"
+version = "1.0.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bff49e947297f3312447abdca79f45f4738097cc82b06e72054d2223f601f1b9"
+checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
+
+[[package]]
+name = "generic-array"
+version = "0.14.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85649ca51fd72272d7821adaf274ad91c288277713d9c18820d8499a7ff69e9a"
 dependencies = [
  "typenum",
  "version_check",
 ]
 
+[[package]]
+name = "getrandom"
+version = "0.2.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c4567c8db10ae91089c99af84c68c38da3ec2f087c3f82960bcdbf3656b6f4d7"
+dependencies = [
+ "cfg-if",
+ "js-sys",
+ "libc",
+ "wasi",
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "headers"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "322106e6bd0cba2d5ead589ddb8150a13d7c4217cf80d7c4f682ca994ccc6aa9"
+dependencies = [
+ "base64",
+ "bytes",
+ "headers-core",
+ "http",
+ "httpdate",
+ "mime",
+ "sha1",
+]
+
+[[package]]
+name = "headers-core"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "54b4a22553d4242c49fddb9ba998a99962b5cc6f22cb5a3482bec22522403ce4"
+dependencies = [
+ "http",
+]
+
 [[package]]
 name = "heck"
 version = "0.4.1"
@@ -103,16 +173,42 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
 
 [[package]]
-name = "indoc"
-version = "2.0.4"
+name = "http"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1e186cfbae8084e513daff4240b4797e342f988cecda4fb6c939150f96315fd8"
+checksum = "21b9ddb458710bc376481b842f5da65cdf31522de232c1ca8146abce2a358258"
+dependencies = [
+ "bytes",
+ "fnv",
+ "itoa",
+]
+
+[[package]]
+name = "httpdate"
+version = "1.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "df3b46402a9d5adb4c86a0cf463f42e19994e3ee891101b1841f30a545cb49a9"
+
+[[package]]
+name = "indoc"
+version = "2.0.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b248f5224d1d606005e02c97f5aa4e88eeb230488bcc03bc9ca4d7991399f2b5"
 
 [[package]]
 name = "itoa"
-version = "1.0.4"
+version = "1.0.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4217ad341ebadf8d8e724e264f13e593e0648f5b3e94b3896a5df283be015ecc"
+checksum = "49f1f14873335454500d59611f1cf4a4b0f786f9ac11f4312a78e4cf2566695b"
+
+[[package]]
+name = "js-sys"
+version = "0.3.69"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "29c15563dc2726973df627357ce0c9ddddbea194836909d655df6a75d2cf296d"
+dependencies = [
+ "wasm-bindgen",
+]
 
 [[package]]
 name = "lazy_static"
@@ -122,15 +218,15 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "libc"
-version = "0.2.135"
+version = "0.2.154"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "68783febc7782c6c5cb401fbda4de5a9898be1762314da0bb2c10ced61f18b0c"
+checksum = "ae743338b92ff9146ce83992f766a31066a91a8c84a45e0e9f21e7cf6de6d346"
 
 [[package]]
 name = "lock_api"
-version = "0.4.9"
+version = "0.4.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "435011366fe56583b16cf956f9df0095b405b82d76425bc8981c0e22e60ec4df"
+checksum = "07af8b9cdd281b7915f413fa73f29ebd5d55d0d3f0155584dade1ff18cea1b17"
 dependencies = [
  "autocfg",
  "scopeguard",
@@ -144,30 +240,36 @@ checksum = "90ed8c1e510134f979dbc4f070f87d4313098b704861a105fe34231c70a3901c"
 
 [[package]]
 name = "memchr"
-version = "2.6.3"
+version = "2.7.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8f232d6ef707e1956a43342693d2a31e72989554d58299d7a88738cc95b0d35c"
+checksum = "6c8640c5d730cb13ebd907d8d04b52f55ac9a2eec55b440c8892f40d56c76c1d"
 
 [[package]]
 name = "memoffset"
-version = "0.9.0"
+version = "0.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5a634b1c61a95585bd15607c6ab0c4e5b226e695ff2800ba0cdccddf208c406c"
+checksum = "488016bfae457b036d996092f6cb448677611ce4449e970ceaf42695203f218a"
 dependencies = [
  "autocfg",
 ]
 
 [[package]]
-name = "once_cell"
-version = "1.15.0"
+name = "mime"
+version = "0.3.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e82dad04139b71a90c080c8463fe0dc7902db5192d939bd0950f074d014339e1"
+checksum = "6877bb514081ee2a7ff5ef9de3281f14a4dd4bceac4c09388074a6b5df8a139a"
+
+[[package]]
+name = "once_cell"
+version = "1.19.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3fdb12b2476b595f9358c5161aa467c2438859caa136dec86c26fdd2efe17b92"
 
 [[package]]
 name = "parking_lot"
-version = "0.12.1"
+version = "0.12.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3742b2c103b9f06bc9fff0a37ff4912935851bee6d36f3c02bcc755bcfec228f"
+checksum = "7e4af0ca4f6caed20e900d564c242b8e5d4903fdacf31d3daf527b66fe6f42fb"
 dependencies = [
  "lock_api",
  "parking_lot_core",
@@ -175,15 +277,15 @@ dependencies = [
 
 [[package]]
 name = "parking_lot_core"
-version = "0.9.3"
+version = "0.9.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "09a279cbf25cb0757810394fbc1e359949b59e348145c643a939a525692e6929"
+checksum = "1e401f977ab385c9e4e3ab30627d6f26d00e2c73eef317493c4ec6d468726cf8"
 dependencies = [
  "cfg-if",
  "libc",
  "redox_syscall",
  "smallvec",
- "windows-sys",
+ "windows-targets",
 ]
 
 [[package]]
@@ -193,19 +295,25 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7170ef9988bc169ba16dd36a7fa041e5c4cbeb6a35b76d4c03daded371eae7c0"
 
 [[package]]
-name = "proc-macro2"
-version = "1.0.76"
+name = "ppv-lite86"
+version = "0.2.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "95fc56cda0b5c3325f5fbbd7ff9fda9e02bb00bb3dac51252d2f1bfa1cb8cc8c"
+checksum = "5b40af805b3121feab8a3c29f04d8ad262fa8e0561883e7653e024ae4479e6de"
+
+[[package]]
+name = "proc-macro2"
+version = "1.0.82"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ad3d49ab951a01fbaafe34f2ec74122942fe18a3f9814c3268f1bb72042131b"
 dependencies = [
  "unicode-ident",
 ]
 
 [[package]]
 name = "pyo3"
-version = "0.20.3"
+version = "0.21.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "53bdbb96d49157e65d45cc287af5f32ffadd5f4761438b527b055fb0d4bb8233"
+checksum = "a5e00b96a521718e08e03b1a622f01c8a8deb50719335de3f60b3b3950f069d8"
 dependencies = [
  "anyhow",
  "cfg-if",
@@ -222,9 +330,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-build-config"
-version = "0.20.3"
+version = "0.21.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "deaa5745de3f5231ce10517a1f5dd97d53e5a2fd77aa6b5842292085831d48d7"
+checksum = "7883df5835fafdad87c0d888b266c8ec0f4c9ca48a5bed6bbb592e8dedee1b50"
 dependencies = [
  "once_cell",
  "target-lexicon",
@@ -232,9 +340,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-ffi"
-version = "0.20.3"
+version = "0.21.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "62b42531d03e08d4ef1f6e85a2ed422eb678b8cd62b762e53891c05faf0d4afa"
+checksum = "01be5843dc60b916ab4dad1dca6d20b9b4e6ddc8e15f50c47fe6d85f1fb97403"
 dependencies = [
  "libc",
  "pyo3-build-config",
@@ -242,9 +350,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-log"
-version = "0.9.0"
+version = "0.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4c10808ee7250403bedb24bc30c32493e93875fef7ba3e4292226fe924f398bd"
+checksum = "2af49834b8d2ecd555177e63b273b708dea75150abc6f5341d0a6e1a9623976c"
 dependencies = [
  "arc-swap",
  "log",
@@ -253,9 +361,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-macros"
-version = "0.20.3"
+version = "0.21.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7305c720fa01b8055ec95e484a6eca7a83c841267f0dd5280f0c8b8551d2c158"
+checksum = "77b34069fc0682e11b31dbd10321cbf94808394c56fd996796ce45217dfac53c"
 dependencies = [
  "proc-macro2",
  "pyo3-macros-backend",
@@ -265,9 +373,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-macros-backend"
-version = "0.20.3"
+version = "0.21.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7c7e9b68bb9c3149c5b0cade5d07f953d6d125eb4337723c4ccdb665f1f96185"
+checksum = "08260721f32db5e1a5beae69a55553f56b99bd0e1c3e6e0a5e8851a9d0f5a85c"
 dependencies = [
  "heck",
  "proc-macro2",
@@ -278,9 +386,9 @@ dependencies = [
 
 [[package]]
 name = "pythonize"
-version = "0.20.0"
+version = "0.21.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ffd1c3ef39c725d63db5f9bc455461bafd80540cb7824c61afb823501921a850"
+checksum = "9d0664248812c38cc55a4ed07f88e4df516ce82604b93b1ffdc041aa77a6cb3c"
 dependencies = [
  "pyo3",
  "serde",
@@ -288,27 +396,57 @@ dependencies = [
 
 [[package]]
 name = "quote"
-version = "1.0.35"
+version = "1.0.36"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "291ec9ab5efd934aaf503a6466c5d5251535d108ee747472c3977cc5acc868ef"
+checksum = "0fa76aaf39101c457836aec0ce2316dbdc3ab723cdda1c6bd4e6ad4208acaca7"
 dependencies = [
  "proc-macro2",
 ]
 
 [[package]]
-name = "redox_syscall"
-version = "0.2.16"
+name = "rand"
+version = "0.8.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fb5a58c1855b4b6819d59012155603f0b22ad30cad752600aadfcb695265519a"
+checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
+dependencies = [
+ "libc",
+ "rand_chacha",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_chacha"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
+dependencies = [
+ "ppv-lite86",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.6.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
+dependencies = [
+ "getrandom",
+]
+
+[[package]]
+name = "redox_syscall"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "469052894dcb553421e483e4209ee581a45100d31b4018de03e5a7ad86374a7e"
 dependencies = [
  "bitflags",
 ]
 
 [[package]]
 name = "regex"
-version = "1.10.3"
+version = "1.10.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b62dbe01f0b06f9d8dc7d49e05a0785f153b00b2c227856282f671e0318c9b15"
+checksum = "c117dbdfde9c8308975b6a18d71f3f385c89461f7b3fb054288ecf2a2058ba4c"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -318,9 +456,9 @@ dependencies = [
 
 [[package]]
 name = "regex-automata"
-version = "0.4.4"
+version = "0.4.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3b7fa1134405e2ec9353fd416b17f8dacd46c473d7d3fd1cf202706a14eb792a"
+checksum = "86b83b8b9847f9bf95ef68afb0b8e6cdb80f498442f5179a29fad448fcc1eaea"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -329,36 +467,36 @@ dependencies = [
 
 [[package]]
 name = "regex-syntax"
-version = "0.8.2"
+version = "0.8.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c08c74e62047bb2de4ff487b251e4a92e24f48745648451635cec7d591162d9f"
+checksum = "adad44e29e4c806119491a7f06f03de4d1af22c3a680dd47f1e6e179439d1f56"
 
 [[package]]
 name = "ryu"
-version = "1.0.11"
+version = "1.0.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4501abdff3ae82a1c1b477a17252eb69cee9e66eb915c1abaa4f44d873df9f09"
+checksum = "f3cb5ba0dc43242ce17de99c180e96db90b235b8a9fdc9543c96d2209116bd9f"
 
 [[package]]
 name = "scopeguard"
-version = "1.1.0"
+version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
+checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
 
 [[package]]
 name = "serde"
-version = "1.0.197"
+version = "1.0.201"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3fb1c873e1b9b056a4dc4c0c198b24c3ffa059243875552b2bd0933b1aee4ce2"
+checksum = "780f1cebed1629e4753a1a38a3c72d30b97ec044f0aef68cb26650a3c5cf363c"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.197"
+version = "1.0.201"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7eb0b34b42edc17f6b7cac84a52a1c5f0e1bb2227e997ca9011ea3dd34e8610b"
+checksum = "c5e405930b9796f1c00bee880d03fc7e0bb4b9a11afc776885ffe84320da2865"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -367,9 +505,9 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.114"
+version = "1.0.117"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c5f09b1bd632ef549eaa9f60a1f8de742bdbc698e6cee2095fc84dde5f549ae0"
+checksum = "455182ea6142b14f93f4bc5320a2b31c1f266b66a4a5c858b013302a5d8cbfc3"
 dependencies = [
  "itoa",
  "ryu",
@@ -377,22 +515,44 @@ dependencies = [
 ]
 
 [[package]]
-name = "smallvec"
-version = "1.10.0"
+name = "sha1"
+version = "0.10.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a507befe795404456341dfab10cef66ead4c041f62b8b11bbb92bffe5d0953e0"
+checksum = "e3bf829a2d51ab4a5ddf1352d8470c140cadc8301b2ae1789db023f01cedd6ba"
+dependencies = [
+ "cfg-if",
+ "cpufeatures",
+ "digest",
+]
+
+[[package]]
+name = "sha2"
+version = "0.10.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "793db75ad2bcafc3ffa7c68b215fee268f537982cd901d132f89c6343f3a3dc8"
+dependencies = [
+ "cfg-if",
+ "cpufeatures",
+ "digest",
+]
+
+[[package]]
+name = "smallvec"
+version = "1.13.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3c5e1a9a646d36c3599cd173a41282daf47c44583ad367b8e6837255952e5c67"
 
 [[package]]
 name = "subtle"
-version = "2.4.1"
+version = "2.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6bdef32e8150c2a081110b42772ffe7d7c9032b606bc226c8260fd97e0976601"
+checksum = "81cdd64d312baedb58e21336b31bc043b77e01cc99033ce76ef539f78e965ebc"
 
 [[package]]
 name = "syn"
-version = "2.0.48"
+version = "2.0.61"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0f3531638e407dfc0814761abb7c00a5b54992b849452a0646b7f65c9f770f3f"
+checksum = "c993ed8ccba56ae856363b1845da7266a7cb78e1d146c8a32d54b45a8b831fc9"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -404,35 +564,53 @@ name = "synapse"
 version = "0.1.0"
 dependencies = [
  "anyhow",
+ "base64",
  "blake2",
+ "bytes",
+ "headers",
  "hex",
+ "http",
  "lazy_static",
  "log",
+ "mime",
  "pyo3",
  "pyo3-log",
  "pythonize",
  "regex",
  "serde",
  "serde_json",
+ "sha2",
+ "ulid",
 ]
 
 [[package]]
 name = "target-lexicon"
-version = "0.12.4"
+version = "0.12.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c02424087780c9b71cc96799eaeddff35af2bc513278cda5c99fc1f5d026d3c1"
+checksum = "e1fc403891a21bcfb7c37834ba66a547a8f402146eba7265b5a6d88059c9ff2f"
 
 [[package]]
 name = "typenum"
-version = "1.15.0"
+version = "1.17.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dcf81ac59edc17cc8697ff311e8f5ef2d99fcbd9817b34cec66f90b6c3dfd987"
+checksum = "42ff0bf0c66b8238c6f3b578df37d0b7848e55df8577b3f74f92a69acceeb825"
+
+[[package]]
+name = "ulid"
+version = "1.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "34778c17965aa2a08913b57e1f34db9b4a63f5de31768b55bf20d2795f921259"
+dependencies = [
+ "getrandom",
+ "rand",
+ "web-time",
+]
 
 [[package]]
 name = "unicode-ident"
-version = "1.0.5"
+version = "1.0.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6ceab39d59e4c9499d4e5a8ee0e2735b891bb7308ac83dfb4e80cad195c9f6f3"
+checksum = "3354b9ac3fae1ff6755cb6db53683adb661634f67557942dea4facebec0fee4b"
 
 [[package]]
 name = "unindent"
@@ -447,44 +625,135 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
 
 [[package]]
-name = "windows-sys"
-version = "0.36.1"
+name = "wasi"
+version = "0.11.0+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ea04155a16a59f9eab786fe12a4a450e75cdb175f9e0d80da1e17db09f55b8d2"
+checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
+
+[[package]]
+name = "wasm-bindgen"
+version = "0.2.92"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4be2531df63900aeb2bca0daaaddec08491ee64ceecbee5076636a3b026795a8"
 dependencies = [
+ "cfg-if",
+ "wasm-bindgen-macro",
+]
+
+[[package]]
+name = "wasm-bindgen-backend"
+version = "0.2.92"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "614d787b966d3989fa7bb98a654e369c762374fd3213d212cfc0251257e747da"
+dependencies = [
+ "bumpalo",
+ "log",
+ "once_cell",
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-macro"
+version = "0.2.92"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a1f8823de937b71b9460c0c34e25f3da88250760bec0ebac694b49997550d726"
+dependencies = [
+ "quote",
+ "wasm-bindgen-macro-support",
+]
+
+[[package]]
+name = "wasm-bindgen-macro-support"
+version = "0.2.92"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e94f17b526d0a461a191c78ea52bbce64071ed5c04c9ffe424dcb38f74171bb7"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-backend",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-shared"
+version = "0.2.92"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "af190c94f2773fdb3729c55b007a722abb5384da03bc0986df4c289bf5567e96"
+
+[[package]]
+name = "web-time"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5a6580f308b1fad9207618087a65c04e7a10bc77e02c8e84e9b00dd4b12fa0bb"
+dependencies = [
+ "js-sys",
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "windows-targets"
+version = "0.52.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6f0713a46559409d202e70e28227288446bf7841d3211583a4b53e3f6d96e7eb"
+dependencies = [
+ "windows_aarch64_gnullvm",
  "windows_aarch64_msvc",
  "windows_i686_gnu",
+ "windows_i686_gnullvm",
  "windows_i686_msvc",
  "windows_x86_64_gnu",
+ "windows_x86_64_gnullvm",
  "windows_x86_64_msvc",
 ]
 
 [[package]]
-name = "windows_aarch64_msvc"
-version = "0.36.1"
+name = "windows_aarch64_gnullvm"
+version = "0.52.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9bb8c3fd39ade2d67e9874ac4f3db21f0d710bee00fe7cab16949ec184eeaa47"
+checksum = "7088eed71e8b8dda258ecc8bac5fb1153c5cffaf2578fc8ff5d61e23578d3263"
+
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.52.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9985fd1504e250c615ca5f281c3f7a6da76213ebd5ccc9561496568a2752afb6"
 
 [[package]]
 name = "windows_i686_gnu"
-version = "0.36.1"
+version = "0.52.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "180e6ccf01daf4c426b846dfc66db1fc518f074baa793aa7d9b9aaeffad6a3b6"
+checksum = "88ba073cf16d5372720ec942a8ccbf61626074c6d4dd2e745299726ce8b89670"
+
+[[package]]
+name = "windows_i686_gnullvm"
+version = "0.52.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "87f4261229030a858f36b459e748ae97545d6f1ec60e5e0d6a3d32e0dc232ee9"
 
 [[package]]
 name = "windows_i686_msvc"
-version = "0.36.1"
+version = "0.52.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e2e7917148b2812d1eeafaeb22a97e4813dfa60a3f8f78ebe204bcc88f12f024"
+checksum = "db3c2bf3d13d5b658be73463284eaf12830ac9a26a90c717b7f771dfe97487bf"
 
 [[package]]
 name = "windows_x86_64_gnu"
-version = "0.36.1"
+version = "0.52.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4dcd171b8776c41b97521e5da127a2d86ad280114807d0b2ab1e462bc764d9e1"
+checksum = "4e4246f76bdeff09eb48875a0fd3e2af6aada79d409d33011886d3e1581517d9"
+
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.52.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "852298e482cd67c356ddd9570386e2862b5673c85bd5f88df9ab6802b334c596"
 
 [[package]]
 name = "windows_x86_64_msvc"
-version = "0.36.1"
+version = "0.52.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c811ca4a8c853ef420abd8592ba53ddbbac90410fab6903b3e79972a631f7680"
+checksum = "bec47e5bfd1bff0eeaf6d8b485cc1074891a197ab4225d504cb7a1ab88b02bf0"

changelog.d/16848.feature

@@ -0,0 +1 @@
+Add a feature that allows clients to query the configured federation whitelist. Disabled by default.

changelog.d/16930.bugfix

@@ -1 +0,0 @@
-Fix various long-standing bugs which could cause incorrect state to be returned from `/sync` in certain situations.

changelog.d/16932.bugfix

@@ -1 +0,0 @@
-Fix various long-standing bugs which could cause incorrect state to be returned from `/sync` in certain situations.

changelog.d/16942.bugfix

@@ -1 +0,0 @@
-Fix various long-standing bugs which could cause incorrect state to be returned from `/sync` in certain situations.

changelog.d/17037.feature

@@ -1 +0,0 @@
-Add support for moving `/pushrules` off of main process.

changelog.d/17038.feature

@@ -1 +0,0 @@
-Add support for moving `/pushrules` off of main process.

changelog.d/17044.misc

@@ -1 +0,0 @@
-Refactor auth chain fetching to reduce duplication.

changelog.d/17045.misc

@@ -1 +0,0 @@
-Improve database performance by adding a missing index to `access_tokens.refresh_token_id`.

changelog.d/17049.misc

@@ -1 +0,0 @@
-Improve database performance by reducing number of receipts fetched when sending push notifications.

changelog.d/17058.doc

@@ -0,0 +1 @@
+Document [`/v1/make_knock`](https://spec.matrix.org/v1.10/server-server-api/#get_matrixfederationv1make_knockroomiduserid) and [`/v1/send_knock/](https://spec.matrix.org/v1.10/server-server-api/#put_matrixfederationv1send_knockroomideventid) federation endpoints as worker-compatible.

changelog.d/17098.feature

@@ -0,0 +1 @@
+Add the ability to allow numeric user IDs with a specific prefix when in the CAS flow. Contributed by Aurélien Grimpard.

changelog.d/17139.doc

@@ -0,0 +1 @@
+Update User Admin API with note about prefixing OIDC external_id providers.

changelog.d/17142.bugfix

@@ -0,0 +1 @@
+Fix bug where push rules would be empty in `/sync` for some accounts. Introduced in v1.93.0.

changelog.d/17145.bugfix

@@ -0,0 +1 @@
+Add support for optional whitespace around the Federation API's `Authorization` header's parameter commas.

changelog.d/17150.doc

@@ -0,0 +1 @@
+Clarify the state of the created room when using the `autocreate_auto_join_room_preset` config option.

changelog.d/17151.misc

@@ -0,0 +1 @@
+Add note to reflect that [MSC3886](https://github.com/matrix-org/matrix-spec-proposals/pull/3886) is closed but will support will remain for some time.

changelog.d/17162.misc

@@ -0,0 +1 @@
+Update dependency PyO3 to 0.21.

changelog.d/17166.misc

@@ -0,0 +1 @@
+Fixes linter errors found in PR #17147.

changelog.d/17170.misc

@@ -0,0 +1 @@
+Bump black from 24.2.0 to 24.4.2.

changelog.d/17171.doc

@@ -0,0 +1 @@
+Update the Admin FAQ with the current libjemalloc version for latest Debian stable. Additionally update the name of the "push_rules" stream in the Workers documentation.

changelog.d/17177.bugfix

@@ -0,0 +1 @@
+Fix bug where disabling room publication prevented public rooms being created on workers.

changelog.d/17184.bugfix

@@ -0,0 +1 @@
+Fix bug where disabling room publication prevented public rooms being created on workers.

changelog.d/17186.misc

@@ -0,0 +1 @@
+Cache literal sync filter validation for performance.

changelog.d/17192.misc

@@ -0,0 +1 @@
+Improve performance by fixing a reactor pause.

changelog.d/17195.misc

@@ -0,0 +1 @@
+Route `/make_knock` and `/send_knock` federation APIs to the federation reader worker in Complement test runs.

changelog.d/17199.feature

@@ -0,0 +1 @@
+Add a feature that allows clients to query the configured federation whitelist. Disabled by default.

changelog.d/17200.misc

@@ -0,0 +1 @@
+Prepare sync handler to be able to return different sync responses (`SyncVersion`).

changelog.d/17201.misc

@@ -0,0 +1 @@
+Organize the sync cache key parameter outside of the sync config (separate concerns).

changelog.d/17202.misc

@@ -0,0 +1 @@
+Refactor `SyncResultBuilder` assembly to its own function.

changelog.d/17203.misc

@@ -0,0 +1 @@
+Rename to be obvious: `joined_rooms` -> `joined_room_ids`.

changelog.d/17208.misc

@@ -0,0 +1 @@
+Rename to be obvious: `joined_rooms` -> `joined_room_ids`.

changelog.d/17216.misc

@@ -0,0 +1 @@
+Improve performance of calculating device lists changes in `/sync`.

debian/changelog

@@ -1,3 +1,45 @@
+matrix-synapse-py3 (1.107.0) stable; urgency=medium
+
+  * New Synapse release 1.107.0.
+
+ -- Synapse Packaging team <packages@matrix.org>  Tue, 14 May 2024 14:15:34 +0100
+
+matrix-synapse-py3 (1.107.0~rc1) stable; urgency=medium
+
+  * New Synapse release 1.107.0rc1.
+
+ -- Synapse Packaging team <packages@matrix.org>  Tue, 07 May 2024 16:26:26 +0100
+
+matrix-synapse-py3 (1.106.0) stable; urgency=medium
+
+  * New Synapse release 1.106.0.
+
+ -- Synapse Packaging team <packages@matrix.org>  Tue, 30 Apr 2024 11:51:43 +0100
+
+matrix-synapse-py3 (1.106.0~rc1) stable; urgency=medium
+
+  * New Synapse release 1.106.0rc1.
+
+ -- Synapse Packaging team <packages@matrix.org>  Thu, 25 Apr 2024 15:54:59 +0100
+
+matrix-synapse-py3 (1.105.1) stable; urgency=medium
+
+  * New Synapse release 1.105.1.
+
+ -- Synapse Packaging team <packages@matrix.org>  Tue, 23 Apr 2024 15:56:18 +0100
+
+matrix-synapse-py3 (1.105.0) stable; urgency=medium
+
+  * New Synapse release 1.105.0.
+
+ -- Synapse Packaging team <packages@matrix.org>  Tue, 16 Apr 2024 15:53:23 +0100
+
+matrix-synapse-py3 (1.105.0~rc1) stable; urgency=medium
+
+  * New Synapse release 1.105.0rc1.
+
+ -- Synapse Packaging team <packages@matrix.org>  Thu, 11 Apr 2024 12:15:49 +0100
+
 matrix-synapse-py3 (1.104.0) stable; urgency=medium
 
   * New Synapse release 1.104.0.

dev-docs/Makefile

@@ -1,20 +0,0 @@
-# Minimal makefile for Sphinx documentation
-#
-
-# You can set these variables from the command line, and also
-# from the environment for the first two.
-SPHINXOPTS    ?=
-SPHINXBUILD   ?= sphinx-build
-SOURCEDIR     = .
-BUILDDIR      = _build
-
-# Put it first so that "make" without argument is like "make help".
-help:
-	@$(SPHINXBUILD) -M help "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
-
-.PHONY: help Makefile
-
-# Catch-all target: route all unknown targets to Sphinx using the new
-# "make mode" option.  $(O) is meant as a shortcut for $(SPHINXOPTS).
-%: Makefile
-	@$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)

dev-docs/conf.py

@@ -1,50 +0,0 @@
-# Configuration file for the Sphinx documentation builder.
-#
-# For the full list of built-in configuration values, see the documentation:
-# https://www.sphinx-doc.org/en/master/usage/configuration.html
-
-# -- Project information -----------------------------------------------------
-# https://www.sphinx-doc.org/en/master/usage/configuration.html#project-information
-
-project = "Synapse development"
-copyright = "2023, The Matrix.org Foundation C.I.C."
-author = "The Synapse Maintainers and Community"
-
-# -- General configuration ---------------------------------------------------
-# https://www.sphinx-doc.org/en/master/usage/configuration.html#general-configuration
-
-extensions = [
-    "autodoc2",
-    "myst_parser",
-]
-
-templates_path = ["_templates"]
-exclude_patterns = ["_build", "Thumbs.db", ".DS_Store"]
-
-
-# -- Options for Autodoc2 ----------------------------------------------------
-
-autodoc2_docstring_parser_regexes = [
-    # this will render all docstrings as 'MyST' Markdown
-    (r".*", "myst"),
-]
-
-autodoc2_packages = [
-    {
-        "path": "../synapse",
-        # Don't render documentation for everything as a matter of course
-        "auto_mode": False,
-    },
-]
-
-
-# -- Options for MyST (Markdown) ---------------------------------------------
-
-# myst_heading_anchors = 2
-
-
-# -- Options for HTML output -------------------------------------------------
-# https://www.sphinx-doc.org/en/master/usage/configuration.html#options-for-html-output
-
-html_theme = "furo"
-html_static_path = ["_static"]

dev-docs/index.rst

@@ -1,22 +0,0 @@
-.. Synapse Developer Documentation documentation master file, created by
-   sphinx-quickstart on Mon Mar 13 08:59:51 2023.
-   You can adapt this file completely to your liking, but it should at least
-   contain the root `toctree` directive.
-
-Welcome to the Synapse Developer Documentation!
-===========================================================
-
-.. toctree::
-   :maxdepth: 2
-   :caption: Contents:
-
-   modules/federation_sender
-
-
-
-Indices and tables
-==================
-
-* :ref:`genindex`
-* :ref:`modindex`
-* :ref:`search`

dev-docs/modules/federation_sender.md

@@ -1,5 +0,0 @@
-Federation Sender
-=================
-
-```{autodoc2-docstring} synapse.federation.sender
-```

docker/Dockerfile

@@ -163,7 +163,7 @@ FROM docker.io/library/python:${PYTHON_VERSION}-slim-bookworm
 LABEL org.opencontainers.image.url='https://matrix.org/docs/projects/server/synapse'
 LABEL org.opencontainers.image.documentation='https://github.com/element-hq/synapse/blob/master/docker/README.md'
 LABEL org.opencontainers.image.source='https://github.com/element-hq/synapse.git'
-LABEL org.opencontainers.image.licenses='Apache-2.0'
+LABEL org.opencontainers.image.licenses='AGPL-3.0-or-later'
 
 RUN \
   --mount=type=cache,target=/var/cache/apt,sharing=locked \

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

@@ -92,8 +92,6 @@ allow_device_name_lookup_over_federation: true
 ## Experimental Features ##
 
 experimental_features:
-  # client-side support for partial state in /send_join responses
-  faster_joins: true
   # Enable support for polls
   msc3381_polls_enabled: true
   # Enable deleting device-specific notification settings stored in account data
@@ -102,6 +100,12 @@ experimental_features:
   msc3391_enabled: true
   # Filtering /messages by relation type.
   msc3874_enabled: true
+  # no UIA for x-signing upload for the first time
+  msc3967_enabled: true
+  # Expose a room summary for public rooms
+  msc3266_enabled: true
+
+  msc4115_membership_on_events: true
 
 server_notices:
   system_mxid_localpart: _server

docker/configure_workers_and_start.py

@@ -211,6 +211,8 @@ WORKERS_CONFIG: Dict[str, Dict[str, Any]] = {
             "^/_matrix/federation/(v1|v2)/make_leave/",
             "^/_matrix/federation/(v1|v2)/send_join/",
             "^/_matrix/federation/(v1|v2)/send_leave/",
+            "^/_matrix/federation/v1/make_knock/",
+            "^/_matrix/federation/v1/send_knock/",
             "^/_matrix/federation/(v1|v2)/invite/",
             "^/_matrix/federation/(v1|v2)/query_auth/",
             "^/_matrix/federation/(v1|v2)/event_auth/",

docs/admin_api/room_membership.md

@@ -1,6 +1,6 @@
 # Edit Room Membership API
 
-This API allows an administrator to join an user account with a given `user_id`
+This API allows an administrator to join a user account with a given `user_id`
 to a room with a given `room_id_or_alias`. You can only modify the membership of
 local users. The server administrator must be in the room and have permission to
 invite users.

docs/admin_api/user_admin_api.md

@@ -141,8 +141,8 @@ Body parameters:
   provider for SSO (Single sign-on). More details are in the configuration manual under the
   sections [sso](../usage/configuration/config_documentation.md#sso) and [oidc_providers](../usage/configuration/config_documentation.md#oidc_providers).
   - `auth_provider` - **string**, required. The unique, internal ID of the external identity provider.
-    The same as `idp_id` from the homeserver configuration. Note that no error is raised if the
-    provided value is not in the homeserver configuration.
+    The same as `idp_id` from the homeserver configuration. If using OIDC, this value should be prefixed
+    with `oidc-`. Note that no error is raised if the provided value is not in the homeserver configuration.
   - `external_id` - **string**, required. An identifier for the user in the external identity provider.
     When the user logs in to the identity provider, this must be the unique ID that they map to.
 - `admin` - **bool**, optional, defaults to `false`. Whether the user is a homeserver administrator,

docs/development/contributing_guide.md

@@ -86,6 +86,8 @@ poetry install --extras all
 This will install the runtime and developer dependencies for the project.  Be sure to check
 that the `poetry install` step completed cleanly.
 
+For OSX users, be sure to set `PKG_CONFIG_PATH` to support `icu4c`. Run `brew info icu4c` for more details.
+
 ## Running Synapse via poetry
 
 To start a local instance of Synapse in the locked poetry environment, create a config file:

docs/message_retention_policies.md

@@ -7,8 +7,10 @@ follow the semantics described in
 and allow server and room admins to configure how long messages should
 be kept in a homeserver's database before being purged from it.
 **Please note that, as this feature isn't part of the Matrix
-specification yet, this implementation is to be considered as
-experimental.**
+specification yet, the use of `m.room.retention` events for per-room
+retention policies is to be considered as experimental. However, the use
+of a default message retention policy is considered a stable feature
+in Synapse.**
 
 A message retention policy is mainly defined by its `max_lifetime`
 parameter, which defines how long a message can be kept around after
@@ -49,8 +51,8 @@ clients.
 
 ## Server configuration
 
-Support for this feature can be enabled and configured by adding a the
-`retention` in the Synapse configuration file (see
+Support for this feature can be enabled and configured by adding the
+`retention` option in the Synapse configuration file (see
 [configuration manual](usage/configuration/config_documentation.md#retention)).
 
 To enable support for message retention policies, set the setting
@@ -115,7 +117,7 @@ In this example, we define three jobs:
   policy's `max_lifetime` is greater than a week.
 
 Note that this example is tailored to show different configurations and
-features slightly more jobs than it's probably necessary (in practice, a
+features slightly more jobs than is probably necessary (in practice, a
 server admin would probably consider it better to replace the two last
 jobs with one that runs once a day and handles rooms which
 policy's `max_lifetime` is greater than 3 days).

docs/postgres.md

@@ -128,7 +128,7 @@ can read more about that [here](https://www.postgresql.org/docs/10/kernel-resour
 ### Overview
 
 The script `synapse_port_db` allows porting an existing synapse server
-backed by SQLite to using PostgreSQL. This is done in as a two phase
+backed by SQLite to using PostgreSQL. This is done as a two phase
 process:
 
 1.  Copy the existing SQLite database to a separate location and run

docs/setup/installation.md

@@ -259,9 +259,9 @@ users, etc.) to the developers via the `--report-stats` argument.
 
 This command will generate you a config file that you can then customise, but it will
 also generate a set of keys for you. These keys will allow your homeserver to
-identify itself to other homeserver, so don't lose or delete them. It would be
+identify itself to other homeservers, so don't lose or delete them. It would be
 wise to back them up somewhere safe. (If, for whatever reason, you do need to
-change your homeserver's keys, you may find that other homeserver have the
+change your homeserver's keys, you may find that other homeservers have the
 old key cached. If you update the signing key, you should change the name of the
 key in the `<server name>.signing.key` file (the second word) to something
 different. See the [spec](https://matrix.org/docs/spec/server_server/latest.html#retrieving-server-keys) for more information on key management).

docs/sso_mapping_providers.md

@@ -98,6 +98,7 @@ A custom mapping provider must specify the following methods:
         either accept this localpart or pick their own username. Otherwise this
         option has no effect. If omitted, defaults to `False`.
       - `display_name`: An optional string, the display name for the user.
+      - `picture`: An optional string, the avatar url for the user.
       - `emails`: A list of strings, the email address(es) to associate with
         this user. If omitted, defaults to an empty list.
 * `async def get_extra_attributes(self, userinfo, token)`

docs/systemd-with-workers/system/matrix-synapse.service

@@ -9,6 +9,7 @@ ReloadPropagatedFrom=matrix-synapse.target
 Type=notify
 NotifyAccess=main
 User=matrix-synapse
+RuntimeDirectory=synapse
 WorkingDirectory=/var/lib/matrix-synapse
 EnvironmentFile=-/etc/default/matrix-synapse
 ExecStartPre=/opt/venvs/matrix-synapse/bin/python -m synapse.app.homeserver --config-path=/etc/matrix-synapse/homeserver.yaml --config-path=/etc/matrix-synapse/conf.d/ --generate-keys

docs/upgrade.md

@@ -117,6 +117,14 @@ each upgrade are complete before moving on to the next upgrade, to avoid
 stacking them up. You can monitor the currently running background updates with
 [the Admin API](usage/administration/admin_api/background_updates.html#status).
 
+# Upgrading to v1.106.0
+
+## Minimum supported Rust version
+The minimum supported Rust version has been increased from v1.65.0 to v1.66.0.
+Users building from source will need to ensure their `rustc` version is up to
+date.
+
+
 # Upgrading to v1.100.0
 
 ## Minimum supported Rust version

docs/usage/administration/admin_api/background_updates.md

@@ -44,7 +44,7 @@ For each update:
 
 ## Enabled
 
-This API allow pausing background updates.
+This API allows pausing background updates.
 
 Background updates should *not* be paused for significant periods of time, as
 this can affect the performance of Synapse.

docs/usage/administration/admin_faq.md

@@ -241,7 +241,7 @@ in memory constrained environments, or increased if performance starts to
 degrade.
 
 However, degraded performance due to a low cache factor, common on
-machines with slow disks, often leads to explosions in memory use due
+machines with slow disks, often leads to explosions in memory use due to
 backlogged requests. In this case, reducing the cache factor will make
 things worse. Instead, try increasing it drastically. 2.0 is a good
 starting value.
@@ -250,10 +250,10 @@ Using [libjemalloc](https://jemalloc.net) can also yield a significant
 improvement in overall memory use, and especially in terms of giving back
 RAM to the OS. To use it, the library must simply be put in the
 LD_PRELOAD environment variable when launching Synapse. On Debian, this
-can be done by installing the `libjemalloc1` package and adding this
+can be done by installing the `libjemalloc2` package and adding this
 line to `/etc/default/matrix-synapse`:
 
-    LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libjemalloc.so.1
+    LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libjemalloc.so.2
 
 This made a significant difference on Python 2.7 - it's unclear how
 much of an improvement it provides on Python 3.x.

docs/usage/configuration/config_documentation.md

@@ -676,8 +676,8 @@ This setting has the following sub-options:
     trailing 's'.
 * `app_name`: `app_name` defines the default value for '%(app)s' in `notif_from` and email
    subjects. It defaults to 'Matrix'.
-* `enable_notifs`: Set to true to enable sending emails for messages that the user
-   has missed. Disabled by default.
+* `enable_notifs`: Set to true to allow users to receive e-mail notifications. If this is not set,
+    users can configure e-mail notifications but will not receive them. Disabled by default.
 * `notif_for_new_users`: Set to false to disable automatic subscription to email
    notifications for new users. Enabled by default.
 * `notif_delay_before_mail`: The time to wait before emailing about a notification.
@@ -1232,6 +1232,31 @@ federation_domain_whitelist:
   - syd.example.com
 ```
 ---
+### `federation_whitelist_endpoint_enabled`
+
+Enables an endpoint for fetching the federation whitelist config.
+
+The request method and path is `GET /_synapse/client/v1/config/federation_whitelist`, and the
+response format is:
+
+```json
+{
+    "whitelist_enabled": true,  // Whether the federation whitelist is being enforced
+    "whitelist": [  // Which server names are allowed by the whitelist
+        "example.com"
+    ]
+}
+```
+
+If `whitelist_enabled` is `false` then the server is permitted to federate with all others.
+
+The endpoint requires authentication.
+
+Example configuration:
+```yaml
+federation_whitelist_endpoint_enabled: true
+```
+---
 ### `federation_metrics_domains`
 
 Report prometheus metrics on the age of PDUs being sent to and received from
@@ -1317,6 +1342,12 @@ Options related to caching.
 The number of events to cache in memory. Defaults to 10K. Like other caches,
 this is affected by `caches.global_factor` (see below).
 
+For example, the default is 10K and the global_factor default is 0.5.
+
+Since 10K * 0.5 is 5K then the event cache size will be 5K.
+
+The cache affected by this configuration is named as "*getEvent*".
+
 Note that this option is not part of the `caches` section.
 
 Example configuration:
@@ -1342,6 +1373,8 @@ number of entries that can be stored.
 
   Defaults to 0.5, which will halve the size of all caches.
 
+  Note that changing this value also affects the HTTP connection pool.
+
 * `per_cache_factors`: A dictionary of cache name to cache factor for that individual
    cache. Overrides the global cache factor for a given cache.
 
@@ -2583,6 +2616,11 @@ Possible values for this option are:
 * "trusted_private_chat": an invitation is required to join this room and the invitee is
   assigned a power level of 100 upon joining the room.
 
+Each preset will set up a room in the same manner as if it were provided as the `preset` parameter when
+calling the
+[`POST /_matrix/client/v3/createRoom`](https://spec.matrix.org/latest/client-server-api/#post_matrixclientv3createroom)
+Client-Server API endpoint.
+
 If a value of "private_chat" or "trusted_private_chat" is used then
 `auto_join_mxid_localpart` must also be configured.
 
@@ -3520,6 +3558,15 @@ Has the following sub-options:
    users. This allows the CAS SSO flow to be limited to sign in only, rather than
    automatically registering users that have a valid SSO login but do not have
    a pre-registered account. Defaults to true.
+* `allow_numeric_ids`: set to 'true' allow numeric user IDs (default false).
+   This allows CAS SSO flow to provide user IDs composed of numbers only.
+   These identifiers will be prefixed by the letter "u" by default.
+   The prefix can be configured using the "numeric_ids_prefix" option.
+   Be careful to choose the prefix correctly to avoid any possible conflicts
+   (e.g. user 1234 becomes u1234 when a user u1234 already exists).
+* `numeric_ids_prefix`: the prefix you wish to add in front of a numeric user ID
+   when the "allow_numeric_ids" option is set to "true".
+   By default, the prefix is the letter "u" and only alphanumeric characters are allowed.
 
    *Added in Synapse 1.93.0.*
 
@@ -3534,6 +3581,8 @@ cas_config:
     userGroup: "staff"
     department: None
   enable_registration: true
+  allow_numeric_ids: true
+  numeric_ids_prefix: "numericuser"
 ```
 ---
 ### `sso`

docs/user_directory.md

@@ -86,9 +86,9 @@ The search term is then split into words:
 * If unavailable, then runs of ASCII characters, numbers, underscores, and hyphens
   are considered words.
 
-The queries for PostgreSQL and SQLite are detailed below, by their overall goal
+The queries for PostgreSQL and SQLite are detailed below, but their overall goal
 is to find matching users, preferring users who are "real" (e.g. not bots,
-not deactivated). It is assumed that real users will have an display name and
+not deactivated). It is assumed that real users will have a display name and
 avatar set.
 
 ### PostgreSQL

docs/workers.md

@@ -211,6 +211,8 @@ information.
     ^/_matrix/federation/v1/make_leave/
     ^/_matrix/federation/(v1|v2)/send_join/
     ^/_matrix/federation/(v1|v2)/send_leave/
+    ^/_matrix/federation/v1/make_knock/
+    ^/_matrix/federation/v1/send_knock/
     ^/_matrix/federation/(v1|v2)/invite/
     ^/_matrix/federation/v1/event_auth/
     ^/_matrix/federation/v1/timestamp_to_event/
@@ -232,7 +234,7 @@ information.
     ^/_matrix/client/v1/rooms/.*/hierarchy$
     ^/_matrix/client/(v1|unstable)/rooms/.*/relations/
     ^/_matrix/client/v1/rooms/.*/threads$
-    ^/_matrix/client/unstable/im.nheko.summary/rooms/.*/summary$
+    ^/_matrix/client/unstable/im.nheko.summary/summary/.*$
     ^/_matrix/client/(r0|v3|unstable)/account/3pid$
     ^/_matrix/client/(r0|v3|unstable)/account/whoami$
     ^/_matrix/client/(r0|v3|unstable)/devices$
@@ -535,7 +537,7 @@ the stream writer for the `presence` stream:
 ##### The `push_rules` stream
 
 The following endpoints should be routed directly to the worker configured as
-the stream writer for the `push` stream:
+the stream writer for the `push_rules` stream:
 
     ^/_matrix/client/(api/v1|r0|v3|unstable)/pushrules/
 
@@ -634,7 +636,7 @@ worker application type.
 
 #### Push Notifications
 
-You can designate generic worker to sending push notifications to
+You can designate generic workers to send push notifications to
 a [push gateway](https://spec.matrix.org/v1.5/push-gateway-api/) such as
 [sygnal](https://github.com/matrix-org/sygnal) and email.
 

pyproject.toml

@@ -96,7 +96,7 @@ module-name = "synapse.synapse_rust"
 
 [tool.poetry]
 name = "matrix-synapse"
-version = "1.104.0"
+version = "1.107.0"
 description = "Homeserver for the Matrix decentralised comms protocol"
 authors = ["Matrix.org Team and Contributors <packages@matrix.org>"]
 license = "AGPL-3.0-or-later"
@@ -321,7 +321,7 @@ all = [
 # This helps prevents merge conflicts when running a batch of dependabot updates.
 isort = ">=5.10.1"
 black = ">=22.7.0"
-ruff = "0.3.2"
+ruff = "0.3.7"
 # Type checking only works with the pydantic.v1 compat module from pydantic v2
 pydantic = "^2"
 
@@ -364,17 +364,6 @@ towncrier = ">=18.6.0rc1"
 tomli = ">=1.2.3"
 
 
-# Dependencies for building the development documentation
-[tool.poetry.group.dev-docs]
-optional = true
-
-[tool.poetry.group.dev-docs.dependencies]
-sphinx = {version = "^6.1", python = "^3.8"}
-sphinx-autodoc2 = {version = ">=0.4.2,<0.6.0", python = "^3.8"}
-myst-parser = {version = "^1.0.0", python = "^3.8"}
-furo = ">=2022.12.7,<2025.0.0"
-
-
 [build-system]
 # The upper bounds here are defensive, intended to prevent situations like
 # https://github.com/matrix-org/synapse/issues/13849 and

rust/Cargo.toml

@@ -7,7 +7,7 @@ name = "synapse"
 version = "0.1.0"
 
 edition = "2021"
-rust-version = "1.65.0"
+rust-version = "1.66.0"
 
 [lib]
 name = "synapse"
@@ -23,19 +23,26 @@ name = "synapse.synapse_rust"
 
 [dependencies]
 anyhow = "1.0.63"
+base64 = "0.21.7"
+bytes = "1.6.0"
+headers = "0.4.0"
+http = "1.1.0"
 lazy_static = "1.4.0"
 log = "0.4.17"
-pyo3 = { version = "0.20.0", features = [
+mime = "0.3.17"
+pyo3 = { version = "0.21.0", features = [
     "macros",
     "anyhow",
     "abi3",
     "abi3-py38",
 ] }
-pyo3-log = "0.9.0"
-pythonize = "0.20.0"
+pyo3-log = "0.10.0"
+pythonize = "0.21.0"
 regex = "1.6.0"
+sha2 = "0.10.8"
 serde = { version = "1.0.144", features = ["derive"] }
 serde_json = "1.0.85"
+ulid = "1.1.2"
 
 [features]
 extension-module = ["pyo3/extension-module"]

rust/src/acl/mod.rs

@@ -25,21 +25,21 @@ use std::net::Ipv4Addr;
 use std::str::FromStr;
 
 use anyhow::Error;
-use pyo3::prelude::*;
+use pyo3::{prelude::*, pybacked::PyBackedStr};
 use regex::Regex;
 
 use crate::push::utils::{glob_to_regex, GlobMatchType};
 
 /// Called when registering modules with python.
-pub fn register_module(py: Python<'_>, m: &PyModule) -> PyResult<()> {
-    let child_module = PyModule::new(py, "acl")?;
+pub fn register_module(py: Python<'_>, m: &Bound<'_, PyModule>) -> PyResult<()> {
+    let child_module = PyModule::new_bound(py, "acl")?;
     child_module.add_class::<ServerAclEvaluator>()?;
 
-    m.add_submodule(child_module)?;
+    m.add_submodule(&child_module)?;
 
     // We need to manually add the module to sys.modules to make `from
     // synapse.synapse_rust import acl` work.
-    py.import("sys")?
+    py.import_bound("sys")?
         .getattr("modules")?
         .set_item("synapse.synapse_rust.acl", child_module)?;
 
@@ -59,8 +59,8 @@ impl ServerAclEvaluator {
     #[new]
     pub fn py_new(
         allow_ip_literals: bool,
-        allow: Vec<&str>,
-        deny: Vec<&str>,
+        allow: Vec<PyBackedStr>,
+        deny: Vec<PyBackedStr>,
     ) -> Result<Self, Error> {
         let allow = allow
             .iter()

rust/src/errors.rs

@@ -0,0 +1,60 @@
+/*
+ * 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>.
+ */
+
+#![allow(clippy::new_ret_no_self)]
+
+use std::collections::HashMap;
+
+use http::{HeaderMap, StatusCode};
+use pyo3::{exceptions::PyValueError, import_exception};
+
+import_exception!(synapse.api.errors, SynapseError);
+
+impl SynapseError {
+    pub fn new(
+        code: StatusCode,
+        message: String,
+        errcode: &'static str,
+        additional_fields: Option<HashMap<String, String>>,
+        headers: Option<HeaderMap>,
+    ) -> pyo3::PyErr {
+        // Transform the HeaderMap into a HashMap<String, String>
+        let headers = if let Some(headers) = headers {
+            let mut map = HashMap::with_capacity(headers.len());
+            for (key, value) in headers.iter() {
+                let Ok(value) = value.to_str() else {
+                    // This should never happen, but we don't want to panic in case it does
+                    return PyValueError::new_err(
+                        "Could not construct SynapseError: header value is not valid ASCII",
+                    );
+                };
+
+                map.insert(key.as_str().to_owned(), value.to_owned());
+            }
+            Some(map)
+        } else {
+            None
+        };
+
+        SynapseError::new_err((code.as_u16(), message, errcode, additional_fields, headers))
+    }
+}
+
+import_exception!(synapse.api.errors, NotFoundError);
+
+impl NotFoundError {
+    pub fn new() -> pyo3::PyErr {
+        NotFoundError::new_err(())
+    }
+}

rust/src/events/internal_metadata.rs

@@ -20,8 +20,10 @@
 
 //! Implements the internal metadata class attached to events.
 //!
-//! The internal metadata is a bit like a `TypedDict`, in that it is stored as a
-//! JSON dict in the DB. Most events have zero, or only a few, of these keys
+//! The internal metadata is a bit like a `TypedDict`, in that most of
+//! it is stored as a JSON dict in the DB (the exceptions being `outlier`
+//! and `stream_ordering` which have their own columns in the database).
+//! Most events have zero, or only a few, of these keys
 //! set. Therefore, since we care more about memory size than performance here,
 //! we store these fields in a mapping.
 //!
@@ -36,9 +38,10 @@ use anyhow::Context;
 use log::warn;
 use pyo3::{
     exceptions::PyAttributeError,
+    pybacked::PyBackedStr,
     pyclass, pymethods,
-    types::{PyDict, PyString},
-    IntoPy, PyAny, PyObject, PyResult, Python,
+    types::{PyAnyMethods, PyDict, PyDictMethods, PyString},
+    Bound, IntoPy, PyAny, PyObject, PyResult, Python,
 };
 
 /// Definitions of the various fields of the internal metadata.
@@ -57,7 +60,7 @@ enum EventInternalMetadataData {
 
 impl EventInternalMetadataData {
     /// Convert the field to its name and python object.
-    fn to_python_pair<'a>(&self, py: Python<'a>) -> (&'a PyString, PyObject) {
+    fn to_python_pair<'a>(&self, py: Python<'a>) -> (&'a Bound<'a, PyString>, PyObject) {
         match self {
             EventInternalMetadataData::OutOfBandMembership(o) => {
                 (pyo3::intern!(py, "out_of_band_membership"), o.into_py(py))
@@ -88,10 +91,13 @@ impl EventInternalMetadataData {
     /// Converts from python key/values to the field.
     ///
     /// Returns `None` if the key is a valid but unrecognized string.
-    fn from_python_pair(key: &PyAny, value: &PyAny) -> PyResult<Option<Self>> {
-        let key_str: &str = key.extract()?;
+    fn from_python_pair(
+        key: &Bound<'_, PyAny>,
+        value: &Bound<'_, PyAny>,
+    ) -> PyResult<Option<Self>> {
+        let key_str: PyBackedStr = key.extract()?;
 
-        let e = match key_str {
+        let e = match &*key_str {
             "out_of_band_membership" => EventInternalMetadataData::OutOfBandMembership(
                 value
                     .extract()
@@ -208,11 +214,11 @@ pub struct EventInternalMetadata {
 #[pymethods]
 impl EventInternalMetadata {
     #[new]
-    fn new(dict: &PyDict) -> PyResult<Self> {
+    fn new(dict: &Bound<'_, PyDict>) -> PyResult<Self> {
         let mut data = Vec::with_capacity(dict.len());
 
         for (key, value) in dict.iter() {
-            match EventInternalMetadataData::from_python_pair(key, value) {
+            match EventInternalMetadataData::from_python_pair(&key, &value) {
                 Ok(Some(entry)) => data.push(entry),
                 Ok(None) => {}
                 Err(err) => {
@@ -234,8 +240,11 @@ impl EventInternalMetadata {
         self.clone()
     }
 
+    /// Get a dict holding the data stored in the `internal_metadata` column in the database.
+    ///
+    /// Note that `outlier` and `stream_ordering` are stored in separate columns so are not returned here.
     fn get_dict(&self, py: Python<'_>) -> PyResult<PyObject> {
-        let dict = PyDict::new(py);
+        let dict = PyDict::new_bound(py);
 
         for entry in &self.data {
             let (key, value) = entry.to_python_pair(py);

rust/src/events/mod.rs

@@ -20,20 +20,23 @@
 
 //! Classes for representing Events.
 
-use pyo3::{types::PyModule, PyResult, Python};
+use pyo3::{
+    types::{PyAnyMethods, PyModule, PyModuleMethods},
+    Bound, PyResult, Python,
+};
 
 mod internal_metadata;
 
 /// Called when registering modules with python.
-pub fn register_module(py: Python<'_>, m: &PyModule) -> PyResult<()> {
-    let child_module = PyModule::new(py, "events")?;
+pub fn register_module(py: Python<'_>, m: &Bound<'_, PyModule>) -> PyResult<()> {
+    let child_module = PyModule::new_bound(py, "events")?;
     child_module.add_class::<internal_metadata::EventInternalMetadata>()?;
 
-    m.add_submodule(child_module)?;
+    m.add_submodule(&child_module)?;
 
     // We need to manually add the module to sys.modules to make `from
     // synapse.synapse_rust import events` work.
-    py.import("sys")?
+    py.import_bound("sys")?
         .getattr("modules")?
         .set_item("synapse.synapse_rust.events", child_module)?;
 

rust/src/http.rs

@@ -0,0 +1,174 @@
+/*
+ * 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>.
+ */
+
+use bytes::{Buf, BufMut, Bytes, BytesMut};
+use headers::{Header, HeaderMapExt};
+use http::{HeaderName, HeaderValue, Method, Request, Response, StatusCode, Uri};
+use pyo3::{
+    exceptions::PyValueError,
+    types::{PyAnyMethods, PyBytes, PyBytesMethods, PySequence, PyTuple},
+    Bound, PyAny, PyResult,
+};
+
+use crate::errors::SynapseError;
+
+/// Read a file-like Python object by chunks
+///
+/// # Errors
+///
+/// Returns an error if calling the `read` on the Python object failed
+fn read_io_body(body: &Bound<'_, PyAny>, chunk_size: usize) -> PyResult<Bytes> {
+    let mut buf = BytesMut::new();
+    loop {
+        let bound = &body.call_method1("read", (chunk_size,))?;
+        let bytes: &Bound<'_, PyBytes> = bound.downcast()?;
+        if bytes.as_bytes().is_empty() {
+            return Ok(buf.into());
+        }
+        buf.put(bytes.as_bytes());
+    }
+}
+
+/// Transform a Twisted `IRequest` to an [`http::Request`]
+///
+/// It uses the following members of `IRequest`:
+///   - `content`, which is expected to be a file-like object with a `read` method
+///   - `uri`, which is expected to be a valid URI as `bytes`
+///   - `method`, which is expected to be a valid HTTP method as `bytes`
+///   - `requestHeaders`, which is expected to have a `getAllRawHeaders` method
+///
+/// # Errors
+///
+/// Returns an error if the Python object doesn't properly implement `IRequest`
+pub fn http_request_from_twisted(request: &Bound<'_, PyAny>) -> PyResult<Request<Bytes>> {
+    let content = request.getattr("content")?;
+    let body = read_io_body(&content, 4096)?;
+
+    let mut req = Request::new(body);
+
+    let bound = &request.getattr("uri")?;
+    let uri: &Bound<'_, PyBytes> = bound.downcast()?;
+    *req.uri_mut() =
+        Uri::try_from(uri.as_bytes()).map_err(|_| PyValueError::new_err("invalid uri"))?;
+
+    let bound = &request.getattr("method")?;
+    let method: &Bound<'_, PyBytes> = bound.downcast()?;
+    *req.method_mut() = Method::from_bytes(method.as_bytes())
+        .map_err(|_| PyValueError::new_err("invalid method"))?;
+
+    let headers_iter = request
+        .getattr("requestHeaders")?
+        .call_method0("getAllRawHeaders")?
+        .iter()?;
+
+    for header in headers_iter {
+        let header = header?;
+        let header: &Bound<'_, PyTuple> = header.downcast()?;
+        let bound = &header.get_item(0)?;
+        let name: &Bound<'_, PyBytes> = bound.downcast()?;
+        let name = HeaderName::from_bytes(name.as_bytes())
+            .map_err(|_| PyValueError::new_err("invalid header name"))?;
+
+        let bound = &header.get_item(1)?;
+        let values: &Bound<'_, PySequence> = bound.downcast()?;
+        for index in 0..values.len()? {
+            let bound = &values.get_item(index)?;
+            let value: &Bound<'_, PyBytes> = bound.downcast()?;
+            let value = HeaderValue::from_bytes(value.as_bytes())
+                .map_err(|_| PyValueError::new_err("invalid header value"))?;
+            req.headers_mut().append(name.clone(), value);
+        }
+    }
+
+    Ok(req)
+}
+
+/// Send an [`http::Response`] through a Twisted `IRequest`
+///
+/// It uses the following members of `IRequest`:
+///
+///  - `responseHeaders`, which is expected to have a `addRawHeader(bytes, bytes)` method
+///  - `setResponseCode(int)` method
+///  - `write(bytes)` method
+///  - `finish()` method
+///
+///  # Errors
+///
+/// Returns an error if the Python object doesn't properly implement `IRequest`
+pub fn http_response_to_twisted<B>(
+    request: &Bound<'_, PyAny>,
+    response: Response<B>,
+) -> PyResult<()>
+where
+    B: Buf,
+{
+    let (parts, mut body) = response.into_parts();
+
+    request.call_method1("setResponseCode", (parts.status.as_u16(),))?;
+
+    let response_headers = request.getattr("responseHeaders")?;
+    for (name, value) in parts.headers.iter() {
+        response_headers.call_method1("addRawHeader", (name.as_str(), value.as_bytes()))?;
+    }
+
+    while body.remaining() != 0 {
+        let chunk = body.chunk();
+        request.call_method1("write", (chunk,))?;
+        body.advance(chunk.len());
+    }
+
+    request.call_method0("finish")?;
+
+    Ok(())
+}
+
+/// An extension trait for [`HeaderMap`] that provides typed access to headers, and throws the
+/// right python exceptions when the header is missing or fails to parse.
+///
+/// [`HeaderMap`]: headers::HeaderMap
+pub trait HeaderMapPyExt: HeaderMapExt {
+    /// Get a header from the map, returning an error if it is missing or invalid.
+    fn typed_get_required<H>(&self) -> PyResult<H>
+    where
+        H: Header,
+    {
+        self.typed_get_optional::<H>()?.ok_or_else(|| {
+            SynapseError::new(
+                StatusCode::BAD_REQUEST,
+                format!("Missing required header: {}", H::name()),
+                "M_MISSING_PARAM",
+                None,
+                None,
+            )
+        })
+    }
+
+    /// Get a header from the map, returning `None` if it is missing and an error if it is invalid.
+    fn typed_get_optional<H>(&self) -> PyResult<Option<H>>
+    where
+        H: Header,
+    {
+        self.typed_try_get::<H>().map_err(|_| {
+            SynapseError::new(
+                StatusCode::BAD_REQUEST,
+                format!("Invalid header: {}", H::name()),
+                "M_INVALID_PARAM",
+                None,
+                None,
+            )
+        })
+    }
+}
+
+impl<T: HeaderMapExt> HeaderMapPyExt for T {}

rust/src/lib.rs

@@ -3,8 +3,11 @@ use pyo3::prelude::*;
 use pyo3_log::ResetHandle;
 
 pub mod acl;
+pub mod errors;
 pub mod events;
+pub mod http;
 pub mod push;
+pub mod rendezvous;
 
 lazy_static! {
     static ref LOGGING_HANDLE: ResetHandle = pyo3_log::init();
@@ -35,7 +38,7 @@ fn reset_logging_config() {
 
 /// The entry point for defining the Python module.
 #[pymodule]
-fn synapse_rust(py: Python<'_>, m: &PyModule) -> PyResult<()> {
+fn synapse_rust(py: Python<'_>, m: &Bound<'_, PyModule>) -> PyResult<()> {
     m.add_function(wrap_pyfunction!(sum_as_string, m)?)?;
     m.add_function(wrap_pyfunction!(get_rust_file_digest, m)?)?;
     m.add_function(wrap_pyfunction!(reset_logging_config, m)?)?;
@@ -43,6 +46,7 @@ fn synapse_rust(py: Python<'_>, m: &PyModule) -> PyResult<()> {
     acl::register_module(py, m)?;
     push::register_module(py, m)?;
     events::register_module(py, m)?;
+    rendezvous::register_module(py, m)?;
 
     Ok(())
 }

rust/src/push/base_rules.rs

@@ -304,12 +304,12 @@ pub const BASE_APPEND_UNDERRIDE_RULES: &[PushRule] = &[
         default_enabled: true,
     },
     PushRule {
-        rule_id: Cow::Borrowed("global/underride/.m.rule.room_one_to_one"),
+        rule_id: Cow::Borrowed("global/underride/.m.rule.encrypted_room_one_to_one"),
         priority_class: 1,
         conditions: Cow::Borrowed(&[
             Condition::Known(KnownCondition::EventMatch(EventMatchCondition {
                 key: Cow::Borrowed("type"),
-                pattern: Cow::Borrowed("m.room.message"),
+                pattern: Cow::Borrowed("m.room.encrypted"),
             })),
             Condition::Known(KnownCondition::RoomMemberCount {
                 is: Some(Cow::Borrowed("2")),
@@ -320,12 +320,12 @@ pub const BASE_APPEND_UNDERRIDE_RULES: &[PushRule] = &[
         default_enabled: true,
     },
     PushRule {
-        rule_id: Cow::Borrowed("global/underride/.m.rule.encrypted_room_one_to_one"),
+        rule_id: Cow::Borrowed("global/underride/.m.rule.room_one_to_one"),
         priority_class: 1,
         conditions: Cow::Borrowed(&[
             Condition::Known(KnownCondition::EventMatch(EventMatchCondition {
                 key: Cow::Borrowed("type"),
-                pattern: Cow::Borrowed("m.room.encrypted"),
+                pattern: Cow::Borrowed("m.room.message"),
             })),
             Condition::Known(KnownCondition::RoomMemberCount {
                 is: Some(Cow::Borrowed("2")),

rust/src/push/mod.rs

@@ -66,7 +66,7 @@ use log::warn;
 use pyo3::exceptions::PyTypeError;
 use pyo3::prelude::*;
 use pyo3::types::{PyBool, PyList, PyLong, PyString};
-use pythonize::{depythonize, pythonize};
+use pythonize::{depythonize_bound, pythonize};
 use serde::de::Error as _;
 use serde::{Deserialize, Serialize};
 use serde_json::Value;
@@ -78,19 +78,19 @@ pub mod evaluator;
 pub mod utils;
 
 /// Called when registering modules with python.
-pub fn register_module(py: Python<'_>, m: &PyModule) -> PyResult<()> {
-    let child_module = PyModule::new(py, "push")?;
+pub fn register_module(py: Python<'_>, m: &Bound<'_, PyModule>) -> PyResult<()> {
+    let child_module = PyModule::new_bound(py, "push")?;
     child_module.add_class::<PushRule>()?;
     child_module.add_class::<PushRules>()?;
     child_module.add_class::<FilteredPushRules>()?;
     child_module.add_class::<PushRuleEvaluator>()?;
     child_module.add_function(wrap_pyfunction!(get_base_rule_ids, m)?)?;
 
-    m.add_submodule(child_module)?;
+    m.add_submodule(&child_module)?;
 
     // We need to manually add the module to sys.modules to make `from
     // synapse.synapse_rust import push` work.
-    py.import("sys")?
+    py.import_bound("sys")?
         .getattr("modules")?
         .set_item("synapse.synapse_rust.push", child_module)?;
 
@@ -271,12 +271,12 @@ pub enum SimpleJsonValue {
 
 impl<'source> FromPyObject<'source> for SimpleJsonValue {
     fn extract(ob: &'source PyAny) -> PyResult<Self> {
-        if let Ok(s) = <PyString as pyo3::PyTryFrom>::try_from(ob) {
+        if let Ok(s) = ob.downcast::<PyString>() {
             Ok(SimpleJsonValue::Str(Cow::Owned(s.to_string())))
         // A bool *is* an int, ensure we try bool first.
-        } else if let Ok(b) = <PyBool as pyo3::PyTryFrom>::try_from(ob) {
+        } else if let Ok(b) = ob.downcast::<PyBool>() {
             Ok(SimpleJsonValue::Bool(b.extract()?))
-        } else if let Ok(i) = <PyLong as pyo3::PyTryFrom>::try_from(ob) {
+        } else if let Ok(i) = ob.downcast::<PyLong>() {
             Ok(SimpleJsonValue::Int(i.extract()?))
         } else if ob.is_none() {
             Ok(SimpleJsonValue::Null)
@@ -299,7 +299,7 @@ pub enum JsonValue {
 
 impl<'source> FromPyObject<'source> for JsonValue {
     fn extract(ob: &'source PyAny) -> PyResult<Self> {
-        if let Ok(l) = <PyList as pyo3::PyTryFrom>::try_from(ob) {
+        if let Ok(l) = ob.downcast::<PyList>() {
             match l.iter().map(SimpleJsonValue::extract).collect() {
                 Ok(a) => Ok(JsonValue::Array(a)),
                 Err(e) => Err(PyTypeError::new_err(format!(
@@ -370,8 +370,8 @@ impl IntoPy<PyObject> for Condition {
 }
 
 impl<'source> FromPyObject<'source> for Condition {
-    fn extract(ob: &'source PyAny) -> PyResult<Self> {
-        Ok(depythonize(ob)?)
+    fn extract_bound(ob: &Bound<'source, PyAny>) -> PyResult<Self> {
+        Ok(depythonize_bound(ob.clone())?)
     }
 }
 

rust/src/rendezvous/mod.rs

@@ -0,0 +1,327 @@
+/*
+ * 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>.
+ *
+ */
+
+use std::{
+    collections::{BTreeMap, HashMap},
+    time::{Duration, SystemTime},
+};
+
+use bytes::Bytes;
+use headers::{
+    AccessControlAllowOrigin, AccessControlExposeHeaders, CacheControl, ContentLength, ContentType,
+    HeaderMapExt, IfMatch, IfNoneMatch, Pragma,
+};
+use http::{header::ETAG, HeaderMap, Response, StatusCode, Uri};
+use mime::Mime;
+use pyo3::{
+    exceptions::PyValueError,
+    pyclass, pymethods,
+    types::{PyAnyMethods, PyModule, PyModuleMethods},
+    Bound, Py, PyAny, PyObject, PyResult, Python, ToPyObject,
+};
+use ulid::Ulid;
+
+use self::session::Session;
+use crate::{
+    errors::{NotFoundError, SynapseError},
+    http::{http_request_from_twisted, http_response_to_twisted, HeaderMapPyExt},
+};
+
+mod session;
+
+// n.b. Because OPTIONS requests are handled by the Python code, we don't need to set Access-Control-Allow-Headers.
+fn prepare_headers(headers: &mut HeaderMap, session: &Session) {
+    headers.typed_insert(AccessControlAllowOrigin::ANY);
+    headers.typed_insert(AccessControlExposeHeaders::from_iter([ETAG]));
+    headers.typed_insert(Pragma::no_cache());
+    headers.typed_insert(CacheControl::new().with_no_store());
+    headers.typed_insert(session.etag());
+    headers.typed_insert(session.expires());
+    headers.typed_insert(session.last_modified());
+}
+
+#[pyclass]
+struct RendezvousHandler {
+    base: Uri,
+    clock: PyObject,
+    sessions: BTreeMap<Ulid, Session>,
+    capacity: usize,
+    max_content_length: u64,
+    ttl: Duration,
+}
+
+impl RendezvousHandler {
+    /// Check the input headers of a request which sets data for a session, and return the content type.
+    fn check_input_headers(&self, headers: &HeaderMap) -> PyResult<Mime> {
+        let ContentLength(content_length) = headers.typed_get_required()?;
+
+        if content_length > self.max_content_length {
+            return Err(SynapseError::new(
+                StatusCode::PAYLOAD_TOO_LARGE,
+                "Payload too large".to_owned(),
+                "M_TOO_LARGE",
+                None,
+                None,
+            ));
+        }
+
+        let content_type: ContentType = headers.typed_get_required()?;
+
+        // Content-Type must be text/plain
+        if content_type != ContentType::text() {
+            return Err(SynapseError::new(
+                StatusCode::BAD_REQUEST,
+                "Content-Type must be text/plain".to_owned(),
+                "M_INVALID_PARAM",
+                None,
+                None,
+            ));
+        }
+
+        Ok(content_type.into())
+    }
+
+    /// Evict expired sessions and remove the oldest sessions until we're under the capacity.
+    fn evict(&mut self, now: SystemTime) {
+        // First remove all the entries which expired
+        self.sessions.retain(|_, session| !session.expired(now));
+
+        // Then we remove the oldest entires until we're under the limit
+        while self.sessions.len() > self.capacity {
+            self.sessions.pop_first();
+        }
+    }
+}
+
+#[pymethods]
+impl RendezvousHandler {
+    #[new]
+    #[pyo3(signature = (homeserver, /, capacity=100, max_content_length=4*1024, eviction_interval=60*1000, ttl=60*1000))]
+    fn new(
+        py: Python<'_>,
+        homeserver: &Bound<'_, PyAny>,
+        capacity: usize,
+        max_content_length: u64,
+        eviction_interval: u64,
+        ttl: u64,
+    ) -> PyResult<Py<Self>> {
+        let base: String = homeserver
+            .getattr("config")?
+            .getattr("server")?
+            .getattr("public_baseurl")?
+            .extract()?;
+        let base = Uri::try_from(format!("{base}_synapse/client/rendezvous"))
+            .map_err(|_| PyValueError::new_err("Invalid base URI"))?;
+
+        let clock = homeserver.call_method0("get_clock")?.to_object(py);
+
+        // Construct a Python object so that we can get a reference to the
+        // evict method and schedule it to run.
+        let self_ = Py::new(
+            py,
+            Self {
+                base,
+                clock,
+                sessions: BTreeMap::new(),
+                capacity,
+                max_content_length,
+                ttl: Duration::from_millis(ttl),
+            },
+        )?;
+
+        let evict = self_.getattr(py, "_evict")?;
+        homeserver.call_method0("get_clock")?.call_method(
+            "looping_call",
+            (evict, eviction_interval),
+            None,
+        )?;
+
+        Ok(self_)
+    }
+
+    fn _evict(&mut self, py: Python<'_>) -> PyResult<()> {
+        let clock = self.clock.bind(py);
+        let now: u64 = clock.call_method0("time_msec")?.extract()?;
+        let now = SystemTime::UNIX_EPOCH + Duration::from_millis(now);
+        self.evict(now);
+
+        Ok(())
+    }
+
+    fn handle_post(&mut self, py: Python<'_>, twisted_request: &Bound<'_, PyAny>) -> PyResult<()> {
+        let request = http_request_from_twisted(twisted_request)?;
+
+        let content_type = self.check_input_headers(request.headers())?;
+
+        let clock = self.clock.bind(py);
+        let now: u64 = clock.call_method0("time_msec")?.extract()?;
+        let now = SystemTime::UNIX_EPOCH + Duration::from_millis(now);
+
+        // We trigger an immediate eviction if we're at 2x the capacity
+        if self.sessions.len() >= self.capacity * 2 {
+            self.evict(now);
+        }
+
+        // Generate a new ULID for the session from the current time.
+        let id = Ulid::from_datetime(now);
+
+        let uri = format!("{base}/{id}", base = self.base);
+
+        let body = request.into_body();
+
+        let session = Session::new(body, content_type, now, self.ttl);
+
+        let response = serde_json::json!({
+            "url": uri,
+        })
+        .to_string();
+
+        let mut response = Response::new(response.as_bytes());
+        *response.status_mut() = StatusCode::CREATED;
+        response.headers_mut().typed_insert(ContentType::json());
+        prepare_headers(response.headers_mut(), &session);
+        http_response_to_twisted(twisted_request, response)?;
+
+        self.sessions.insert(id, session);
+
+        Ok(())
+    }
+
+    fn handle_get(
+        &mut self,
+        py: Python<'_>,
+        twisted_request: &Bound<'_, PyAny>,
+        id: &str,
+    ) -> PyResult<()> {
+        let request = http_request_from_twisted(twisted_request)?;
+
+        let if_none_match: Option<IfNoneMatch> = request.headers().typed_get_optional()?;
+
+        let now: u64 = self.clock.call_method0(py, "time_msec")?.extract(py)?;
+        let now = SystemTime::UNIX_EPOCH + Duration::from_millis(now);
+
+        let id: Ulid = id.parse().map_err(|_| NotFoundError::new())?;
+        let session = self
+            .sessions
+            .get(&id)
+            .filter(|s| !s.expired(now))
+            .ok_or_else(NotFoundError::new)?;
+
+        if let Some(if_none_match) = if_none_match {
+            if !if_none_match.precondition_passes(&session.etag()) {
+                let mut response = Response::new(Bytes::new());
+                *response.status_mut() = StatusCode::NOT_MODIFIED;
+                prepare_headers(response.headers_mut(), session);
+                http_response_to_twisted(twisted_request, response)?;
+                return Ok(());
+            }
+        }
+
+        let mut response = Response::new(session.data());
+        *response.status_mut() = StatusCode::OK;
+        let headers = response.headers_mut();
+        prepare_headers(headers, session);
+        headers.typed_insert(session.content_type());
+        headers.typed_insert(session.content_length());
+        http_response_to_twisted(twisted_request, response)?;
+
+        Ok(())
+    }
+
+    fn handle_put(
+        &mut self,
+        py: Python<'_>,
+        twisted_request: &Bound<'_, PyAny>,
+        id: &str,
+    ) -> PyResult<()> {
+        let request = http_request_from_twisted(twisted_request)?;
+
+        let content_type = self.check_input_headers(request.headers())?;
+
+        let if_match: IfMatch = request.headers().typed_get_required()?;
+
+        let data = request.into_body();
+
+        let now: u64 = self.clock.call_method0(py, "time_msec")?.extract(py)?;
+        let now = SystemTime::UNIX_EPOCH + Duration::from_millis(now);
+
+        let id: Ulid = id.parse().map_err(|_| NotFoundError::new())?;
+        let session = self
+            .sessions
+            .get_mut(&id)
+            .filter(|s| !s.expired(now))
+            .ok_or_else(NotFoundError::new)?;
+
+        if !if_match.precondition_passes(&session.etag()) {
+            let mut headers = HeaderMap::new();
+            prepare_headers(&mut headers, session);
+
+            let mut additional_fields = HashMap::with_capacity(1);
+            additional_fields.insert(
+                String::from("org.matrix.msc4108.errcode"),
+                String::from("M_CONCURRENT_WRITE"),
+            );
+
+            return Err(SynapseError::new(
+                StatusCode::PRECONDITION_FAILED,
+                "ETag does not match".to_owned(),
+                "M_UNKNOWN", // Would be M_CONCURRENT_WRITE
+                Some(additional_fields),
+                Some(headers),
+            ));
+        }
+
+        session.update(data, content_type, now);
+
+        let mut response = Response::new(Bytes::new());
+        *response.status_mut() = StatusCode::ACCEPTED;
+        prepare_headers(response.headers_mut(), session);
+        http_response_to_twisted(twisted_request, response)?;
+
+        Ok(())
+    }
+
+    fn handle_delete(&mut self, twisted_request: &Bound<'_, PyAny>, id: &str) -> PyResult<()> {
+        let _request = http_request_from_twisted(twisted_request)?;
+
+        let id: Ulid = id.parse().map_err(|_| NotFoundError::new())?;
+        let _session = self.sessions.remove(&id).ok_or_else(NotFoundError::new)?;
+
+        let mut response = Response::new(Bytes::new());
+        *response.status_mut() = StatusCode::NO_CONTENT;
+        response
+            .headers_mut()
+            .typed_insert(AccessControlAllowOrigin::ANY);
+        http_response_to_twisted(twisted_request, response)?;
+
+        Ok(())
+    }
+}
+
+pub fn register_module(py: Python<'_>, m: &Bound<'_, PyModule>) -> PyResult<()> {
+    let child_module = PyModule::new_bound(py, "rendezvous")?;
+
+    child_module.add_class::<RendezvousHandler>()?;
+
+    m.add_submodule(&child_module)?;
+
+    // We need to manually add the module to sys.modules to make `from
+    // synapse.synapse_rust import rendezvous` work.
+    py.import_bound("sys")?
+        .getattr("modules")?
+        .set_item("synapse.synapse_rust.rendezvous", child_module)?;
+
+    Ok(())
+}

rust/src/rendezvous/session.rs

@@ -0,0 +1,91 @@
+/*
+ * 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>.
+ */
+
+use std::time::{Duration, SystemTime};
+
+use base64::{engine::general_purpose::URL_SAFE_NO_PAD, Engine as _};
+use bytes::Bytes;
+use headers::{ContentLength, ContentType, ETag, Expires, LastModified};
+use mime::Mime;
+use sha2::{Digest, Sha256};
+
+/// A single session, containing data, metadata, and expiry information.
+pub struct Session {
+    hash: [u8; 32],
+    data: Bytes,
+    content_type: Mime,
+    last_modified: SystemTime,
+    expires: SystemTime,
+}
+
+impl Session {
+    /// Create a new session with the given data, content type, and time-to-live.
+    pub fn new(data: Bytes, content_type: Mime, now: SystemTime, ttl: Duration) -> Self {
+        let hash = Sha256::digest(&data).into();
+        Self {
+            hash,
+            data,
+            content_type,
+            expires: now + ttl,
+            last_modified: now,
+        }
+    }
+
+    /// Returns true if the session has expired at the given time.
+    pub fn expired(&self, now: SystemTime) -> bool {
+        self.expires <= now
+    }
+
+    /// Update the session with new data, content type, and last modified time.
+    pub fn update(&mut self, data: Bytes, content_type: Mime, now: SystemTime) {
+        self.hash = Sha256::digest(&data).into();
+        self.data = data;
+        self.content_type = content_type;
+        self.last_modified = now;
+    }
+
+    /// Returns the Content-Type header of the session.
+    pub fn content_type(&self) -> ContentType {
+        self.content_type.clone().into()
+    }
+
+    /// Returns the Content-Length header of the session.
+    pub fn content_length(&self) -> ContentLength {
+        ContentLength(self.data.len() as _)
+    }
+
+    /// Returns the ETag header of the session.
+    pub fn etag(&self) -> ETag {
+        let encoded = URL_SAFE_NO_PAD.encode(self.hash);
+        // SAFETY: Base64 encoding is URL-safe, so ETag-safe
+        format!("\"{encoded}\"")
+            .parse()
+            .expect("base64-encoded hash should be URL-safe")
+    }
+
+    /// Returns the Last-Modified header of the session.
+    pub fn last_modified(&self) -> LastModified {
+        self.last_modified.into()
+    }
+
+    /// Returns the Expires header of the session.
+    pub fn expires(&self) -> Expires {
+        self.expires.into()
+    }
+
+    /// Returns the current data stored in the session.
+    pub fn data(&self) -> Bytes {
+        self.data.clone()
+    }
+}

scripts-dev/complement.sh

@@ -214,7 +214,17 @@ fi
 
 extra_test_args=()
 
-test_packages="./tests/csapi ./tests ./tests/msc3874 ./tests/msc3890 ./tests/msc3391 ./tests/msc3930 ./tests/msc3902"
+test_packages=(
+    ./tests/csapi
+    ./tests
+    ./tests/msc3874
+    ./tests/msc3890
+    ./tests/msc3391
+    ./tests/msc3930
+    ./tests/msc3902
+    ./tests/msc3967
+    ./tests/msc4115
+)
 
 # Enable dirty runs, so tests will reuse the same container where possible.
 # This significantly speeds up tests, but increases the possibility of test pollution.
@@ -278,7 +288,7 @@ fi
 export PASS_SYNAPSE_LOG_TESTING=1
 
 # Run the tests!
-echo "Images built; running complement with ${extra_test_args[@]} $@ $test_packages"
+echo "Images built; running complement with ${extra_test_args[@]} $@ ${test_packages[@]}"
 cd "$COMPLEMENT_DIR"
 
-go test -v -tags "synapse_blacklist" -count=1 "${extra_test_args[@]}" "$@" $test_packages
+go test -v -tags "synapse_blacklist" -count=1 "${extra_test_args[@]}" "$@" "${test_packages[@]}"

scripts-dev/lint.sh

@@ -91,7 +91,6 @@ else
           "synapse" "docker" "tests"
           "scripts-dev"
           "contrib" "synmark" "stubs" ".ci"
-          "dev-docs"
       )
   fi
 fi

synapse/_scripts/synapse_port_db.py

@@ -127,7 +127,7 @@ BOOLEAN_COLUMNS = {
     "redactions": ["have_censored"],
     "room_stats_state": ["is_federatable"],
     "rooms": ["is_public", "has_auth_chain_index"],
-    "users": ["shadow_banned", "approved", "locked"],
+    "users": ["shadow_banned", "approved", "locked", "suspended"],
     "un_partial_stated_event_stream": ["rejection_status_changed"],
     "users_who_share_rooms": ["share_private"],
     "per_user_experimental_features": ["enabled"],

synapse/api/constants.py

@@ -234,6 +234,13 @@ class EventContentFields:
     TO_DEVICE_MSGID: Final = "org.matrix.msgid"
 
 
+class EventUnsignedContentFields:
+    """Fields found inside the 'unsigned' data on events"""
+
+    # Requesting user's membership, per MSC4115
+    MSC4115_MEMBERSHIP: Final = "io.element.msc4115.membership"
+
+
 class RoomTypes:
     """Understood values of the room_type field of m.room.create events."""
 

synapse/config/cas.py

@@ -66,6 +66,17 @@ class CasConfig(Config):
 
             self.cas_enable_registration = cas_config.get("enable_registration", True)
 
+            self.cas_allow_numeric_ids = cas_config.get("allow_numeric_ids")
+            self.cas_numeric_ids_prefix = cas_config.get("numeric_ids_prefix")
+            if (
+                self.cas_numeric_ids_prefix is not None
+                and self.cas_numeric_ids_prefix.isalnum() is False
+            ):
+                raise ConfigError(
+                    "Only alphanumeric characters are allowed for numeric IDs prefix",
+                    ("cas_config", "numeric_ids_prefix"),
+                )
+
             self.idp_name = cas_config.get("idp_name", "CAS")
             self.idp_icon = cas_config.get("idp_icon")
             self.idp_brand = cas_config.get("idp_brand")
@@ -77,6 +88,8 @@ class CasConfig(Config):
             self.cas_displayname_attribute = None
             self.cas_required_attributes = []
             self.cas_enable_registration = False
+            self.cas_allow_numeric_ids = False
+            self.cas_numeric_ids_prefix = "u"
 
 
 # CAS uses a legacy required attributes mapping, not the one provided by

synapse/config/emailconfig.py

@@ -52,6 +52,7 @@ DEFAULT_SUBJECTS = {
     "invite_from_person_to_space": "[%(app)s] %(person)s has invited you to join the %(space)s space on %(app)s...",
     "password_reset": "[%(server_name)s] Password reset",
     "email_validation": "[%(server_name)s] Validate your email",
+    "email_already_in_use": "[%(server_name)s] Email already in use",
 }
 
 LEGACY_TEMPLATE_DIR_WARNING = """
@@ -76,6 +77,7 @@ class EmailSubjectConfig:
     invite_from_person_to_space: str
     password_reset: str
     email_validation: str
+    email_already_in_use: str
 
 
 class EmailConfig(Config):
@@ -180,6 +182,12 @@ class EmailConfig(Config):
             registration_template_text = email_config.get(
                 "registration_template_text", "registration.txt"
             )
+            already_in_use_template_html = email_config.get(
+                "already_in_use_template_html", "already_in_use.html"
+            )
+            already_in_use_template_text = email_config.get(
+                "already_in_use_template_html", "already_in_use.txt"
+            )
             add_threepid_template_html = email_config.get(
                 "add_threepid_template_html", "add_threepid.html"
             )
@@ -215,6 +223,8 @@ class EmailConfig(Config):
                 self.email_password_reset_template_text,
                 self.email_registration_template_html,
                 self.email_registration_template_text,
+                self.email_already_in_use_template_html,
+                self.email_already_in_use_template_text,
                 self.email_add_threepid_template_html,
                 self.email_add_threepid_template_text,
                 self.email_password_reset_template_confirmation_html,
@@ -230,6 +240,8 @@ class EmailConfig(Config):
                     password_reset_template_text,
                     registration_template_html,
                     registration_template_text,
+                    already_in_use_template_html,
+                    already_in_use_template_text,
                     add_threepid_template_html,
                     add_threepid_template_text,
                     "password_reset_confirmation.html",

synapse/config/experimental.py

@@ -393,11 +393,6 @@ class ExperimentalConfig(Config):
         # MSC3967: Do not require UIA when first uploading cross signing keys
         self.msc3967_enabled = experimental.get("msc3967_enabled", False)
 
-        # MSC3981: Recurse relations
-        self.msc3981_recurse_relations = experimental.get(
-            "msc3981_recurse_relations", False
-        )
-
         # MSC3861: Matrix architecture change to delegate authentication via OIDC
         try:
             self.msc3861 = MSC3861(**experimental.get("msc3861", {}))
@@ -409,11 +404,6 @@ class ExperimentalConfig(Config):
         # Check that none of the other config options conflict with MSC3861 when enabled
         self.msc3861.check_config_conflicts(self.root)
 
-        # MSC4010: Do not allow setting m.push_rules account data.
-        self.msc4010_push_rules_account_data = experimental.get(
-            "msc4010_push_rules_account_data", False
-        )
-
         self.msc4028_push_encrypted_events = experimental.get(
             "msc4028_push_encrypted_events", False
         )
@@ -421,3 +411,28 @@ class ExperimentalConfig(Config):
         self.msc4069_profile_inhibit_propagation = experimental.get(
             "msc4069_profile_inhibit_propagation", False
         )
+
+        # MSC4108: Mechanism to allow OIDC sign in and E2EE set up via QR code
+        self.msc4108_enabled = experimental.get("msc4108_enabled", False)
+
+        self.msc4108_delegation_endpoint: Optional[str] = experimental.get(
+            "msc4108_delegation_endpoint", None
+        )
+
+        if (
+            self.msc4108_enabled or self.msc4108_delegation_endpoint is not None
+        ) and not self.msc3861.enabled:
+            raise ConfigError(
+                "MSC4108 requires MSC3861 to be enabled",
+                ("experimental", "msc4108_delegation_endpoint"),
+            )
+
+        if self.msc4108_delegation_endpoint is not None and self.msc4108_enabled:
+            raise ConfigError(
+                "You cannot have MSC4108 both enabled and delegated at the same time",
+                ("experimental", "msc4108_delegation_endpoint"),
+            )
+
+        self.msc4115_membership_on_events = experimental.get(
+            "msc4115_membership_on_events", False
+        )

synapse/config/federation.py

@@ -42,6 +42,10 @@ class FederationConfig(Config):
             for domain in federation_domain_whitelist:
                 self.federation_domain_whitelist[domain] = True
 
+        self.federation_whitelist_endpoint_enabled = config.get(
+            "federation_whitelist_endpoint_enabled", False
+        )
+
         federation_metrics_domains = config.get("federation_metrics_domains") or []
         validate_config(
             _METRICS_FOR_DOMAINS_SCHEMA,

synapse/events/utils.py

@@ -49,7 +49,7 @@ from synapse.api.errors import Codes, SynapseError
 from synapse.api.room_versions import RoomVersion
 from synapse.types import JsonDict, Requester
 
-from . import EventBase
+from . import EventBase, make_event_from_dict
 
 if TYPE_CHECKING:
     from synapse.handlers.relations import BundledAggregations
@@ -82,17 +82,14 @@ def prune_event(event: EventBase) -> EventBase:
     """
     pruned_event_dict = prune_event_dict(event.room_version, event.get_dict())
 
-    from . import make_event_from_dict
-
     pruned_event = make_event_from_dict(
         pruned_event_dict, event.room_version, event.internal_metadata.get_dict()
     )
 
-    # copy the internal fields
+    # Copy the bits of `internal_metadata` that aren't returned by `get_dict`
     pruned_event.internal_metadata.stream_ordering = (
         event.internal_metadata.stream_ordering
     )
-
     pruned_event.internal_metadata.outlier = event.internal_metadata.outlier
 
     # Mark the event as redacted
@@ -101,6 +98,29 @@ def prune_event(event: EventBase) -> EventBase:
     return pruned_event
 
 
+def clone_event(event: EventBase) -> EventBase:
+    """Take a copy of the event.
+
+    This is mostly useful because it does a *shallow* copy of the `unsigned` data,
+    which means it can then be updated without corrupting the in-memory cache. Note that
+    other properties of the event, such as `content`, are *not* (currently) copied here.
+    """
+    # XXX: We rely on at least one of `event.get_dict()` and `make_event_from_dict()`
+    #   making a copy of `unsigned`. Currently, both do, though I don't really know why.
+    #   Still, as long as they do, there's not much point doing yet another copy here.
+    new_event = make_event_from_dict(
+        event.get_dict(), event.room_version, event.internal_metadata.get_dict()
+    )
+
+    # Copy the bits of `internal_metadata` that aren't returned by `get_dict`.
+    new_event.internal_metadata.stream_ordering = (
+        event.internal_metadata.stream_ordering
+    )
+    new_event.internal_metadata.outlier = event.internal_metadata.outlier
+
+    return new_event
+
+
 def prune_event_dict(room_version: RoomVersion, event_dict: JsonDict) -> JsonDict:
     """Redacts the event_dict in the same way as `prune_event`, except it
     operates on dicts rather than event objects

synapse/federation/federation_server.py

@@ -546,7 +546,25 @@ class FederationServer(FederationBase):
                 edu_type=edu_dict["edu_type"],
                 content=edu_dict["content"],
             )
-            await self.registry.on_edu(edu.edu_type, origin, edu.content)
+            try:
+                await self.registry.on_edu(edu.edu_type, origin, edu.content)
+            except Exception:
+                # If there was an error handling the EDU, we must reject the
+                # transaction.
+                #
+                # Some EDU types (notably, to-device messages) are, despite their name,
+                # expected to be reliable; if we weren't able to do something with it,
+                # we have to tell the sender that, and the only way the protocol gives
+                # us to do so is by sending an HTTP error back on the transaction.
+                #
+                # We log the exception now, and then raise a new SynapseError to cause
+                # the transaction to be failed.
+                logger.exception("Error handling EDU of type %s", edu.edu_type)
+                raise SynapseError(500, f"Error handing EDU of type {edu.edu_type}")
+
+                # TODO: if the first EDU fails, we should probably abort the whole
+                #   thing rather than carrying on with the rest of them. That would
+                #   probably be best done inside `concurrently_execute`.
 
         await concurrently_execute(
             _process_edu,
@@ -1414,12 +1432,7 @@ class FederationHandlerRegistry:
         handler = self.edu_handlers.get(edu_type)
         if handler:
             with start_active_span_from_edu(content, "handle_edu"):
-                try:
-                    await handler(origin, content)
-                except SynapseError as e:
-                    logger.info("Failed to handle edu %r: %r", edu_type, e)
-                except Exception:
-                    logger.exception("Failed to handle edu %r", edu_type)
+                await handler(origin, content)
             return
 
         # Check if we can route it somewhere else that isn't us
@@ -1428,17 +1441,12 @@ class FederationHandlerRegistry:
             # Pick an instance randomly so that we don't overload one.
             route_to = random.choice(instances)
 
-            try:
-                await self._send_edu(
-                    instance_name=route_to,
-                    edu_type=edu_type,
-                    origin=origin,
-                    content=content,
-                )
-            except SynapseError as e:
-                logger.info("Failed to handle edu %r: %r", edu_type, e)
-            except Exception:
-                logger.exception("Failed to handle edu %r", edu_type)
+            await self._send_edu(
+                instance_name=route_to,
+                edu_type=edu_type,
+                origin=origin,
+                content=content,
+            )
             return
 
         # Oh well, let's just log and move on.

synapse/federation/transport/server/_base.py

@@ -180,7 +180,11 @@ def _parse_auth_header(header_bytes: bytes) -> Tuple[str, str, str, Optional[str
     """
     try:
         header_str = header_bytes.decode("utf-8")
-        params = re.split(" +", header_str)[1].split(",")
+        space_or_tab = "[ \t]"
+        params = re.split(
+            rf"{space_or_tab}*,{space_or_tab}*",
+            re.split(r"^X-Matrix +", header_str, maxsplit=1)[1],
+        )
         param_dict: Dict[str, str] = {
             k.lower(): v for k, v in [param.split("=", maxsplit=1) for param in params]
         }

synapse/handlers/admin.py

@@ -42,6 +42,7 @@ 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:
@@ -217,7 +218,10 @@ class AdminHandler:
                 )
 
                 events = await filter_events_for_client(
-                    self._storage_controllers, user_id, events
+                    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/cas.py

@@ -78,6 +78,8 @@ class CasHandler:
         self._cas_displayname_attribute = hs.config.cas.cas_displayname_attribute
         self._cas_required_attributes = hs.config.cas.cas_required_attributes
         self._cas_enable_registration = hs.config.cas.cas_enable_registration
+        self._cas_allow_numeric_ids = hs.config.cas.cas_allow_numeric_ids
+        self._cas_numeric_ids_prefix = hs.config.cas.cas_numeric_ids_prefix
 
         self._http_client = hs.get_proxied_http_client()
 
@@ -188,6 +190,9 @@ class CasHandler:
         for child in root[0]:
             if child.tag.endswith("user"):
                 user = child.text
+                # if numeric user IDs are allowed and username is numeric then we add the prefix so Synapse can handle it
+                if self._cas_allow_numeric_ids and user is not None and user.isdigit():
+                    user = f"{self._cas_numeric_ids_prefix}{user}"
             if child.tag.endswith("attributes"):
                 for attribute in child:
                     # ElementTree library expands the namespace in

synapse/handlers/deactivate_account.py

@@ -261,11 +261,22 @@ class DeactivateAccountHandler:
         user = UserID.from_string(user_id)
 
         rooms_for_user = await self.store.get_rooms_for_user(user_id)
+        requester = create_requester(user, authenticated_entity=self._server_name)
+        should_erase = await self.store.is_user_erased(user_id)
+
         for room_id in rooms_for_user:
             logger.info("User parter parting %r from %r", user_id, room_id)
             try:
+                # Before parting the user, redact all membership events if requested
+                if should_erase:
+                    event_ids = await self.store.get_membership_event_ids_for_user(
+                        user_id, room_id
+                    )
+                    for event_id in event_ids:
+                        await self.store.expire_event(event_id)
+
                 await self._room_member_handler.update_membership(
-                    create_requester(user, authenticated_entity=self._server_name),
+                    requester,
                     user,
                     room_id,
                     "leave",

synapse/handlers/device.py

@@ -159,20 +159,32 @@ class DeviceWorkerHandler:
 
     @cancellable
     async def get_device_changes_in_shared_rooms(
-        self, user_id: str, room_ids: StrCollection, from_token: StreamToken
+        self,
+        user_id: str,
+        room_ids: StrCollection,
+        from_token: StreamToken,
+        now_token: Optional[StreamToken] = None,
     ) -> Set[str]:
         """Get the set of users whose devices have changed who share a room with
         the given user.
         """
+        now_device_lists_key = self.store.get_device_stream_token()
+        if now_token:
+            now_device_lists_key = now_token.device_list_key
+
         changed_users = await self.store.get_device_list_changes_in_rooms(
-            room_ids, from_token.device_list_key
+            room_ids,
+            from_token.device_list_key,
+            now_device_lists_key,
         )
 
         if changed_users is not None:
             # We also check if the given user has changed their device. If
             # they're in no rooms then the above query won't include them.
             changed = await self.store.get_users_whose_devices_changed(
-                from_token.device_list_key, [user_id]
+                from_token.device_list_key,
+                [user_id],
+                to_key=now_device_lists_key,
             )
             changed_users.update(changed)
             return changed_users
@@ -190,7 +202,9 @@ class DeviceWorkerHandler:
         tracked_users.add(user_id)
 
         changed = await self.store.get_users_whose_devices_changed(
-            from_token.device_list_key, tracked_users
+            from_token.device_list_key,
+            tracked_users,
+            to_key=now_device_lists_key,
         )
 
         return changed

synapse/handlers/devicemessage.py

@@ -104,6 +104,9 @@ class DeviceMessageHandler:
         """
         Handle receiving to-device messages from remote homeservers.
 
+        Note that any errors thrown from this method will cause the federation /send
+        request to receive an error response.
+
         Args:
             origin: The remote homeserver.
             content: The JSON dictionary containing the to-device messages.

synapse/handlers/e2e_keys.py

@@ -1476,6 +1476,42 @@ class E2eKeysHandler:
         else:
             return exists, self.clock.time_msec() < ts_replacable_without_uia_before
 
+    async def has_different_keys(self, user_id: str, body: JsonDict) -> bool:
+        """
+        Check if a key provided in `body` differs from the same key stored in the DB. Returns
+        true on the first difference. If a key exists in `body` but does not exist in the DB,
+        returns True. If `body` has no keys, this always returns False.
+        Note by 'key' we mean Matrix key rather than JSON key.
+
+        The purpose of this function is to detect whether or not we need to apply UIA checks.
+        We must apply UIA checks if any key in the database is being overwritten. If a key is
+        being inserted for the first time, or if the key exactly matches what is in the database,
+        then no UIA check needs to be performed.
+
+        Args:
+            user_id: The user who sent the `body`.
+            body: The JSON request body from POST /keys/device_signing/upload
+        Returns:
+            True if any key in `body` has a different value in the database.
+        """
+        # Ensure that each key provided in the request body exactly matches the one we have stored.
+        # The first time we see the DB having a different key to the matching request key, bail.
+        # Note: we do not care if the DB has a key which the request does not specify, as we only
+        # care about *replacements* or *insertions* (i.e UPSERT)
+        req_body_key_to_db_key = {
+            "master_key": "master",
+            "self_signing_key": "self_signing",
+            "user_signing_key": "user_signing",
+        }
+        for req_body_key, db_key in req_body_key_to_db_key.items():
+            if req_body_key in body:
+                existing_key = await self.store.get_e2e_cross_signing_key(
+                    user_id, db_key
+                )
+                if existing_key != body[req_body_key]:
+                    return True
+        return False
+
 
 def _check_cross_signing_key(
     key: JsonDict, user_id: str, key_type: str, signing_key: Optional[VerifyKey] = None

synapse/handlers/events.py

@@ -148,6 +148,7 @@ 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,
@@ -189,7 +190,11 @@ class EventHandler:
         is_peeking = not is_user_in_room
 
         filtered = await filter_events_for_client(
-            self._storage_controllers, user.to_string(), [event], is_peeking=is_peeking
+            self._storage_controllers,
+            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

@@ -221,7 +221,10 @@ class InitialSyncHandler:
                 ).addErrback(unwrapFirstError)
 
                 messages = await filter_events_for_client(
-                    self._storage_controllers, user_id, messages
+                    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)
@@ -380,6 +383,7 @@ 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)
@@ -494,6 +498,7 @@ 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/pagination.py

@@ -623,6 +623,7 @@ 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/profile.py

@@ -20,7 +20,7 @@
 #
 import logging
 import random
-from typing import TYPE_CHECKING, Optional, Union
+from typing import TYPE_CHECKING, List, Optional, Union
 
 from synapse.api.errors import (
     AuthError,
@@ -64,8 +64,10 @@ class ProfileHandler:
         self.user_directory_handler = hs.get_user_directory_handler()
         self.request_ratelimiter = hs.get_request_ratelimiter()
 
-        self.max_avatar_size = hs.config.server.max_avatar_size
-        self.allowed_avatar_mimetypes = hs.config.server.allowed_avatar_mimetypes
+        self.max_avatar_size: Optional[int] = hs.config.server.max_avatar_size
+        self.allowed_avatar_mimetypes: Optional[List[str]] = (
+            hs.config.server.allowed_avatar_mimetypes
+        )
 
         self._is_mine_server_name = hs.is_mine_server_name
 
@@ -337,6 +339,12 @@ class ProfileHandler:
             return False
 
         if self.max_avatar_size:
+            if media_info.media_length is None:
+                logger.warning(
+                    "Forbidding avatar change to %s: unknown media size",
+                    mxc,
+                )
+                return False
             # Ensure avatar does not exceed max allowed avatar size
             if media_info.media_length > self.max_avatar_size:
                 logger.warning(

synapse/handlers/relations.py

@@ -95,6 +95,7 @@ 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,
@@ -163,6 +164,7 @@ 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
@@ -608,6 +610,7 @@ 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

@@ -956,6 +956,7 @@ class RoomCreationHandler:
             room_alias=room_alias,
             power_level_content_override=power_level_content_override,
             creator_join_profile=creator_join_profile,
+            ignore_forced_encryption=ignore_forced_encryption,
         )
 
         # we avoid dropping the lock between invites, as otherwise joins can
@@ -1475,6 +1476,7 @@ 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(

synapse/handlers/room_member.py

@@ -752,6 +752,36 @@ class RoomMemberHandler(metaclass=abc.ABCMeta):
             and requester.user.to_string() == self._server_notices_mxid
         )
 
+        requester_suspended = await self.store.get_user_suspended_status(
+            requester.user.to_string()
+        )
+        if action == Membership.INVITE and requester_suspended:
+            raise SynapseError(
+                403,
+                "Sending invites while account is suspended is not allowed.",
+                Codes.USER_ACCOUNT_SUSPENDED,
+            )
+
+        if target.to_string() != requester.user.to_string():
+            target_suspended = await self.store.get_user_suspended_status(
+                target.to_string()
+            )
+        else:
+            target_suspended = requester_suspended
+
+        if action == Membership.JOIN and target_suspended:
+            raise SynapseError(
+                403,
+                "Joining rooms while account is suspended is not allowed.",
+                Codes.USER_ACCOUNT_SUSPENDED,
+            )
+        if action == Membership.KNOCK and target_suspended:
+            raise SynapseError(
+                403,
+                "Knocking on rooms while account is suspended is not allowed.",
+                Codes.USER_ACCOUNT_SUSPENDED,
+            )
+
         if (
             not self.allow_per_room_profiles and not is_requester_server_notices_user
         ) or requester.shadow_banned:

synapse/handlers/search.py

@@ -480,7 +480,10 @@ class SearchHandler:
         filtered_events = await search_filter.filter([r["event"] for r in results])
 
         events = await filter_events_for_client(
-            self._storage_controllers, user.to_string(), filtered_events
+            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])
@@ -579,7 +582,10 @@ class SearchHandler:
             filtered_events = await search_filter.filter([r["event"] for r in results])
 
             events = await filter_events_for_client(
-                self._storage_controllers, user.to_string(), filtered_events
+                self._storage_controllers,
+                user.to_string(),
+                filtered_events,
+                msc4115_membership_on_events=self.hs.config.experimental.msc4115_membership_on_events,
             )
 
             room_events.extend(events)
@@ -664,11 +670,17 @@ class SearchHandler:
             )
 
             events_before = await filter_events_for_client(
-                self._storage_controllers, user.to_string(), res.events_before
+                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
+                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/sso.py

@@ -169,6 +169,7 @@ class UsernameMappingSession:
     # attributes returned by the ID mapper
     display_name: Optional[str]
     emails: StrCollection
+    avatar_url: Optional[str]
 
     # An optional dictionary of extra attributes to be provided to the client in the
     # login response.
@@ -183,6 +184,7 @@ class UsernameMappingSession:
     # choices made by the user
     chosen_localpart: Optional[str] = None
     use_display_name: bool = True
+    use_avatar: bool = True
     emails_to_use: StrCollection = ()
     terms_accepted_version: Optional[str] = None
 
@@ -660,6 +662,9 @@ class SsoHandler:
             remote_user_id=remote_user_id,
             display_name=attributes.display_name,
             emails=attributes.emails,
+            avatar_url=attributes.picture,
+            # Default to using all mapped emails. Will be overwritten in handle_submit_username_request.
+            emails_to_use=attributes.emails,
             client_redirect_url=client_redirect_url,
             expiry_time_ms=now + self._MAPPING_SESSION_VALIDITY_PERIOD_MS,
             extra_login_attributes=extra_login_attributes,
@@ -966,6 +971,7 @@ class SsoHandler:
         session_id: str,
         localpart: str,
         use_display_name: bool,
+        use_avatar: bool,
         emails_to_use: Iterable[str],
     ) -> None:
         """Handle a request to the username-picker 'submit' endpoint
@@ -988,6 +994,7 @@ class SsoHandler:
         # update the session with the user's choices
         session.chosen_localpart = localpart
         session.use_display_name = use_display_name
+        session.use_avatar = use_avatar
 
         emails_from_idp = set(session.emails)
         filtered_emails: Set[str] = set()
@@ -1068,6 +1075,9 @@ class SsoHandler:
         if session.use_display_name:
             attributes.display_name = session.display_name
 
+        if session.use_avatar:
+            attributes.picture = session.avatar_url
+
         # the following will raise a 400 error if the username has been taken in the
         # meantime.
         user_id = await self._register_mapped_user(

synapse/handlers/sync.py

@@ -20,6 +20,7 @@
 #
 import itertools
 import logging
+from enum import Enum
 from typing import (
     TYPE_CHECKING,
     AbstractSet,
@@ -112,12 +113,28 @@ LAZY_LOADED_MEMBERS_CACHE_MAX_SIZE = 100
 SyncRequestKey = Tuple[Any, ...]
 
 
+class SyncVersion(Enum):
+    """
+    Enum for specifying the version of sync request. This is used to key which type of
+    sync response that we are generating.
+
+    This is different than the `sync_type` you might see used in other code below; which
+    specifies the sub-type sync request (e.g. initial_sync, full_state_sync,
+    incremental_sync) and is really only relevant for the `/sync` v2 endpoint.
+    """
+
+    # These string values are semantically significant because they are used in the the
+    # metrics
+
+    # Traditional `/sync` endpoint
+    SYNC_V2 = "sync_v2"
+
+
 @attr.s(slots=True, frozen=True, auto_attribs=True)
 class SyncConfig:
     user: UserID
     filter_collection: FilterCollection
     is_guest: bool
-    request_key: SyncRequestKey
     device_id: Optional[str]
 
 
@@ -309,6 +326,8 @@ class SyncHandler:
         self,
         requester: Requester,
         sync_config: SyncConfig,
+        sync_version: SyncVersion,
+        request_key: SyncRequestKey,
         since_token: Optional[StreamToken] = None,
         timeout: int = 0,
         full_state: bool = False,
@@ -316,6 +335,17 @@ class SyncHandler:
         """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 requesting the sync response.
+            sync_config: Config/info necessary to process the sync request.
+            sync_version: Determines what kind of sync response to generate.
+            request_key: The key to use for caching the response.
+            since_token: The point in the stream to sync from.
+            timeout: How long to wait for new data to arrive before giving up.
+            full_state: Whether to return the full state for each room.
+        Returns:
+            When `SyncVersion.SYNC_V2`, returns a full `SyncResult`.
         """
         # 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
@@ -324,9 +354,10 @@ class SyncHandler:
         await self.auth_blocking.check_auth_blocking(requester=requester)
 
         res = await self.response_cache.wrap(
-            sync_config.request_key,
+            request_key,
             self._wait_for_sync_for_user,
             sync_config,
+            sync_version,
             since_token,
             timeout,
             full_state,
@@ -338,6 +369,7 @@ class SyncHandler:
     async def _wait_for_sync_for_user(
         self,
         sync_config: SyncConfig,
+        sync_version: SyncVersion,
         since_token: Optional[StreamToken],
         timeout: int,
         full_state: bool,
@@ -363,9 +395,11 @@ class SyncHandler:
         else:
             sync_type = "incremental_sync"
 
+        sync_label = f"{sync_version}:{sync_type}"
+
         context = current_context()
         if context:
-            context.tag = sync_type
+            context.tag = sync_label
 
         # if we have a since token, delete any to-device messages before that token
         # (since we now know that the device has received them)
@@ -384,14 +418,16 @@ class SyncHandler:
             # we are going to return immediately, so don't bother calling
             # notifier.wait_for_events.
             result: SyncResult = await self.current_sync_for_user(
-                sync_config, since_token, full_state=full_state
+                sync_config, sync_version, since_token, full_state=full_state
             )
         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
             ) -> SyncResult:
-                return await self.current_sync_for_user(sync_config, since_token)
+                return await self.current_sync_for_user(
+                    sync_config, sync_version, since_token
+                )
 
             result = await self.notifier.wait_for_events(
                 sync_config.user.to_string(),
@@ -416,13 +452,14 @@ class SyncHandler:
                 lazy_loaded = "true"
             else:
                 lazy_loaded = "false"
-            non_empty_sync_counter.labels(sync_type, lazy_loaded).inc()
+            non_empty_sync_counter.labels(sync_label, lazy_loaded).inc()
 
         return result
 
     async def current_sync_for_user(
         self,
         sync_config: SyncConfig,
+        sync_version: SyncVersion,
         since_token: Optional[StreamToken] = None,
         full_state: bool = False,
     ) -> SyncResult:
@@ -431,12 +468,26 @@ class SyncHandler:
         This is a wrapper around `generate_sync_result` which starts an open tracing
         span to track the sync. See `generate_sync_result` for the next part of your
         indoctrination.
+
+        Args:
+            sync_config: Config/info necessary to process the sync request.
+            sync_version: Determines what kind of sync response to generate.
+            since_token: The point in the stream to sync from.p.
+            full_state: Whether to return the full state for each room.
+        Returns:
+            When `SyncVersion.SYNC_V2`, returns a full `SyncResult`.
         """
         with start_active_span("sync.current_sync_for_user"):
             log_kv({"since_token": since_token})
-            sync_result = await self.generate_sync_result(
-                sync_config, since_token, full_state
-            )
+            # Go through the `/sync` v2 path
+            if sync_version == SyncVersion.SYNC_V2:
+                sync_result: SyncResult = await self.generate_sync_result(
+                    sync_config, since_token, full_state
+                )
+            else:
+                raise Exception(
+                    f"Unknown sync_version (this is a Synapse problem): {sync_version}"
+                )
 
             set_tag(SynapseTags.SYNC_RESULT, bool(sync_result))
             return sync_result
@@ -596,6 +647,7 @@ 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:
@@ -681,6 +733,7 @@ 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 = []
@@ -1259,6 +1312,51 @@ class SyncHandler:
             await_full_state = True
             lazy_load_members = False
 
+        # For a non-gappy sync if the events in the timeline are simply a linear
+        # chain (i.e. no merging/branching of the graph), then we know the state
+        # delta between the end of the previous sync and start of the new one is
+        # empty.
+        #
+        # c.f. #16941 for an example of why we can't do this for all non-gappy
+        # syncs.
+        is_linear_timeline = True
+        if batch.events:
+            # 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(
+                    room_id,
+                    end_token=since_token.room_key,
+                )
+            )
+
+            prev_event_id = last_event_id_prev_batch
+            for e in batch.events:
+                if e.prev_event_ids() != [prev_event_id]:
+                    is_linear_timeline = False
+                    break
+                prev_event_id = e.event_id
+
+        if is_linear_timeline and not batch.limited:
+            state_ids: StateMap[str] = {}
+            if lazy_load_members:
+                if members_to_fetch and batch.events:
+                    # We're lazy-loading, so the client might need some more
+                    # member events to understand the events in this timeline.
+                    # So we fish out all the member events corresponding to the
+                    # timeline here. The caller will then dedupe any redundant
+                    # ones.
+
+                    state_ids = await self._state_storage_controller.get_state_ids_for_event(
+                        batch.events[0].event_id,
+                        # we only want members!
+                        state_filter=StateFilter.from_types(
+                            (EventTypes.Member, member) for member in members_to_fetch
+                        ),
+                        await_full_state=False,
+                    )
+            return state_ids
+
         if batch:
             state_at_timeline_start = (
                 await self._state_storage_controller.get_state_ids_for_event(
@@ -1471,128 +1569,17 @@ class SyncHandler:
             # See https://github.com/matrix-org/matrix-doc/issues/1144
             raise NotImplementedError()
 
-        # Note: we get the users room list *before* we get the current 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))
-
-        # NB: The now_token gets changed by some of the generate_sync_* methods,
-        # this is due to some of the underlying streams not supporting the ability
-        # to query up to a given point.
-        # Always use the `now_token` in `SyncResultBuilder`
-        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.
-        membership_change_events = []
-        if since_token:
-            membership_change_events = await self.store.get_membership_changes_for_user(
-                user_id,
-                since_token.room_key,
-                now_token.room_key,
-                self.rooms_to_exclude_globally,
-            )
-
-            mem_last_change_by_room_id: Dict[str, EventBase] = {}
-            for event in membership_change_events:
-                mem_last_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():
-                assert event.internal_metadata.stream_ordering
-                if (
-                    event.internal_metadata.stream_ordering
-                    < token_before_rooms.room_key.stream
-                ):
-                    continue
-
-                logger.info(
-                    "User membership change between getting rooms and current token: %s %s %s",
-                    user_id,
-                    event.membership,
-                    room_id,
-                )
-                # User joined a room - we have to then check the room state to ensure we
-                # respect any bans if there's a race between the join and ban events.
-                if event.membership == Membership.JOIN:
-                    user_ids_in_room = await self.store.get_users_in_room(room_id)
-                    if user_id in user_ids_in_room:
-                        mutable_joined_room_ids.add(room_id)
-                # The user left the room, or left and was re-invited but not joined yet
-                else:
-                    mutable_joined_room_ids.discard(room_id)
-
-        # Tweak the set of rooms to return to the client for eager (non-lazy) syncs.
-        mutable_rooms_to_exclude = set(self.rooms_to_exclude_globally)
-        if not sync_config.filter_collection.lazy_load_members():
-            # Non-lazy syncs should never include partially stated rooms.
-            # Exclude all partially stated rooms from this sync.
-            results = await self.store.is_partial_state_room_batched(
-                mutable_joined_room_ids
-            )
-            mutable_rooms_to_exclude.update(
-                room_id
-                for room_id, is_partial_state in results.items()
-                if is_partial_state
-            )
-            membership_change_events = [
-                event
-                for event in membership_change_events
-                if not results.get(event.room_id, False)
-            ]
-
-        # Incremental eager syncs should additionally include rooms that
-        # - we are joined to
-        # - are full-stated
-        # - became fully-stated at some point during the sync period
-        #   (These rooms will have been omitted during a previous eager sync.)
-        forced_newly_joined_room_ids: Set[str] = set()
-        if since_token and not sync_config.filter_collection.lazy_load_members():
-            un_partial_stated_rooms = (
-                await self.store.get_un_partial_stated_rooms_between(
-                    since_token.un_partial_stated_rooms_key,
-                    now_token.un_partial_stated_rooms_key,
-                    mutable_joined_room_ids,
-                )
-            )
-            results = await self.store.is_partial_state_room_batched(
-                un_partial_stated_rooms
-            )
-            forced_newly_joined_room_ids.update(
-                room_id
-                for room_id, is_partial_state in results.items()
-                if not is_partial_state
-            )
-
-        # Now we have our list of joined room IDs, exclude as configured and freeze
-        joined_room_ids = frozenset(
-            room_id
-            for room_id in mutable_joined_room_ids
-            if room_id not in mutable_rooms_to_exclude
+        sync_result_builder = await self.get_sync_result_builder(
+            sync_config,
+            since_token,
+            full_state,
         )
 
         logger.debug(
             "Calculating sync response for %r between %s and %s",
             sync_config.user,
-            since_token,
-            now_token,
-        )
-
-        sync_result_builder = SyncResultBuilder(
-            sync_config,
-            full_state,
-            since_token=since_token,
-            now_token=now_token,
-            joined_room_ids=joined_room_ids,
-            excluded_room_ids=frozenset(mutable_rooms_to_exclude),
-            forced_newly_joined_room_ids=frozenset(forced_newly_joined_room_ids),
-            membership_change_events=membership_change_events,
+            sync_result_builder.since_token,
+            sync_result_builder.now_token,
         )
 
         logger.debug("Fetching account data")
@@ -1704,6 +1691,149 @@ class SyncHandler:
             next_batch=sync_result_builder.now_token,
         )
 
+    async def get_sync_result_builder(
+        self,
+        sync_config: SyncConfig,
+        since_token: Optional[StreamToken] = None,
+        full_state: bool = False,
+    ) -> "SyncResultBuilder":
+        """
+        Assemble a `SyncResultBuilder` with all of the initial context to
+        start building up the sync response:
+
+        - Membership changes between the last sync and the current sync.
+        - Joined room IDs (minus any rooms to exclude).
+        - Rooms that became fully-stated/un-partial stated since the last sync.
+
+        Args:
+            sync_config: Config/info necessary to process the sync request.
+            since_token: The point in the stream to sync from.
+            full_state: Whether to return the full state for each room.
+
+        Returns:
+            `SyncResultBuilder` ready to start generating parts of the sync response.
+        """
+        user_id = sync_config.user.to_string()
+
+        # Note: we get the users room list *before* we get the current 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))
+
+        # NB: The `now_token` gets changed by some of the `generate_sync_*` methods,
+        # this is due to some of the underlying streams not supporting the ability
+        # to query up to a given point.
+        # Always use the `now_token` in `SyncResultBuilder`
+        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.
+        membership_change_events = []
+        if since_token:
+            membership_change_events = await self.store.get_membership_changes_for_user(
+                user_id,
+                since_token.room_key,
+                now_token.room_key,
+                self.rooms_to_exclude_globally,
+            )
+
+            mem_last_change_by_room_id: Dict[str, EventBase] = {}
+            for event in membership_change_events:
+                mem_last_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():
+                assert event.internal_metadata.stream_ordering
+                if (
+                    event.internal_metadata.stream_ordering
+                    < token_before_rooms.room_key.stream
+                ):
+                    continue
+
+                logger.info(
+                    "User membership change between getting rooms and current token: %s %s %s",
+                    user_id,
+                    event.membership,
+                    room_id,
+                )
+                # User joined a room - we have to then check the room state to ensure we
+                # respect any bans if there's a race between the join and ban events.
+                if event.membership == Membership.JOIN:
+                    user_ids_in_room = await self.store.get_users_in_room(room_id)
+                    if user_id in user_ids_in_room:
+                        mutable_joined_room_ids.add(room_id)
+                # The user left the room, or left and was re-invited but not joined yet
+                else:
+                    mutable_joined_room_ids.discard(room_id)
+
+        # Tweak the set of rooms to return to the client for eager (non-lazy) syncs.
+        mutable_rooms_to_exclude = set(self.rooms_to_exclude_globally)
+        if not sync_config.filter_collection.lazy_load_members():
+            # Non-lazy syncs should never include partially stated rooms.
+            # Exclude all partially stated rooms from this sync.
+            results = await self.store.is_partial_state_room_batched(
+                mutable_joined_room_ids
+            )
+            mutable_rooms_to_exclude.update(
+                room_id
+                for room_id, is_partial_state in results.items()
+                if is_partial_state
+            )
+            membership_change_events = [
+                event
+                for event in membership_change_events
+                if not results.get(event.room_id, False)
+            ]
+
+        # Incremental eager syncs should additionally include rooms that
+        # - we are joined to
+        # - are full-stated
+        # - became fully-stated at some point during the sync period
+        #   (These rooms will have been omitted during a previous eager sync.)
+        forced_newly_joined_room_ids: Set[str] = set()
+        if since_token and not sync_config.filter_collection.lazy_load_members():
+            un_partial_stated_rooms = (
+                await self.store.get_un_partial_stated_rooms_between(
+                    since_token.un_partial_stated_rooms_key,
+                    now_token.un_partial_stated_rooms_key,
+                    mutable_joined_room_ids,
+                )
+            )
+            results = await self.store.is_partial_state_room_batched(
+                un_partial_stated_rooms
+            )
+            forced_newly_joined_room_ids.update(
+                room_id
+                for room_id, is_partial_state in results.items()
+                if not is_partial_state
+            )
+
+        # Now we have our list of joined room IDs, exclude as configured and freeze
+        joined_room_ids = frozenset(
+            room_id
+            for room_id in mutable_joined_room_ids
+            if room_id not in mutable_rooms_to_exclude
+        )
+
+        sync_result_builder = SyncResultBuilder(
+            sync_config,
+            full_state,
+            since_token=since_token,
+            now_token=now_token,
+            joined_room_ids=joined_room_ids,
+            excluded_room_ids=frozenset(mutable_rooms_to_exclude),
+            forced_newly_joined_room_ids=frozenset(forced_newly_joined_room_ids),
+            membership_change_events=membership_change_events,
+        )
+
+        return sync_result_builder
+
     @measure_func("_generate_sync_entry_for_device_list")
     async def _generate_sync_entry_for_device_list(
         self,
@@ -1752,42 +1882,18 @@ class SyncHandler:
 
         users_that_have_changed = set()
 
-        joined_rooms = sync_result_builder.joined_room_ids
+        joined_room_ids = sync_result_builder.joined_room_ids
 
         # Step 1a, check for changes in devices of users we share a room
         # with
-        #
-        # We do this in two different ways depending on what we have cached.
-        # If we already have a list of all the user that have changed since
-        # the last sync then it's likely more efficient to compare the rooms
-        # they're in with the rooms the syncing user is in.
-        #
-        # If we don't have that info cached then we get all the users that
-        # share a room with our user and check if those users have changed.
-        cache_result = self.store.get_cached_device_list_changes(
-            since_token.device_list_key
-        )
-        if cache_result.hit:
-            changed_users = cache_result.entities
-
-            result = await self.store.get_rooms_for_users(changed_users)
-
-            for changed_user_id, entries in result.items():
-                # Check if the changed user shares any rooms with the user,
-                # or if the changed user is the syncing user (as we always
-                # want to include device list updates of their own devices).
-                if user_id == changed_user_id or any(
-                    rid in joined_rooms for rid in entries
-                ):
-                    users_that_have_changed.add(changed_user_id)
-        else:
-            users_that_have_changed = (
-                await self._device_handler.get_device_changes_in_shared_rooms(
-                    user_id,
-                    sync_result_builder.joined_room_ids,
-                    from_token=since_token,
-                )
+        users_that_have_changed = (
+            await self._device_handler.get_device_changes_in_shared_rooms(
+                user_id,
+                sync_result_builder.joined_room_ids,
+                from_token=since_token,
+                now_token=sync_result_builder.now_token,
             )
+        )
 
         # Step 1b, check for newly joined rooms
         for room_id in newly_joined_rooms:
@@ -1811,7 +1917,7 @@ class SyncHandler:
         # Remove any users that we still share a room with.
         left_users_rooms = await self.store.get_rooms_for_users(newly_left_users)
         for user_id, entries in left_users_rooms.items():
-            if any(rid in joined_rooms for rid in entries):
+            if any(rid in joined_room_ids for rid in entries):
                 newly_left_users.discard(user_id)
 
         return DeviceListUpdates(changed=users_that_have_changed, left=newly_left_users)
@@ -1898,23 +2004,19 @@ class SyncHandler:
             )
 
             if push_rules_changed:
-                global_account_data = {
-                    AccountDataTypes.PUSH_RULES: await self._push_rules_handler.push_rules_for_user(
-                        sync_config.user
-                    ),
-                    **global_account_data,
-                }
+                global_account_data = dict(global_account_data)
+                global_account_data[AccountDataTypes.PUSH_RULES] = (
+                    await self._push_rules_handler.push_rules_for_user(sync_config.user)
+                )
         else:
             all_global_account_data = await self.store.get_global_account_data_for_user(
                 user_id
             )
 
-            global_account_data = {
-                AccountDataTypes.PUSH_RULES: await self._push_rules_handler.push_rules_for_user(
-                    sync_config.user
-                ),
-                **all_global_account_data,
-            }
+            global_account_data = dict(all_global_account_data)
+            global_account_data[AccountDataTypes.PUSH_RULES] = (
+                await self._push_rules_handler.push_rules_for_user(sync_config.user)
+            )
 
         account_data_for_user = (
             await sync_config.filter_collection.filter_global_account_data(