Tweak changelog

Bumps [jsonschema](https://github.com/python-jsonschema/jsonschema) from
4.21.1 to 4.22.0.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/python-jsonschema/jsonschema/releases">jsonschema's
releases</a>.</em></p>
<blockquote>
<h2>v4.22.0</h2>
<!-- raw HTML omitted -->
<h2>What's Changed</h2>
<ul>
<li>Improve <code>best_match</code> (and thereby error messages from
<code>jsonschema.validate</code>) in cases where there are multiple
<em>sibling</em> errors from applying <code>anyOf</code> /
<code>allOf</code> -- i.e. when multiple elements of a JSON array have
errors, we now do prefer showing errors from earlier elements rather
than simply showing an error for the full array (<a
href="https://redirect.github.com/python-jsonschema/jsonschema/issues/1250">#1250</a>).</li>
<li>(Micro-)optimize equality checks when comparing for JSON Schema
equality by first checking for object identity, as <code>==</code>
would.</li>
</ul>
<h2>New Contributors</h2>
<ul>
<li><a href="https://github.com/shinnar"><code>@​shinnar</code></a> made
their first contribution in <a
href="https://redirect.github.com/python-jsonschema/jsonschema/pull/1224">python-jsonschema/jsonschema#1224</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/python-jsonschema/jsonschema/compare/v4.21.1...v4.22.0">https://github.com/python-jsonschema/jsonschema/compare/v4.21.1...v4.22.0</a></p>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/python-jsonschema/jsonschema/blob/main/CHANGELOG.rst">jsonschema's
changelog</a>.</em></p>
<blockquote>
<h1>v4.22.0</h1>
<ul>
<li>Improve <code>best_match</code> (and thereby error messages from
<code>jsonschema.validate</code>) in cases where there are multiple
<em>sibling</em> errors from applying <code>anyOf</code> /
<code>allOf</code> -- i.e. when multiple elements of a JSON array have
errors, we now do prefer showing errors from earlier elements rather
than simply showing an error for the full array (<a
href="https://redirect.github.com/python-jsonschema/jsonschema/issues/1250">#1250</a>).</li>
<li>(Micro-)optimize equality checks when comparing for JSON Schema
equality by first checking for object identity, as <code>==</code>
would.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="9882dbeb1a"><code>9882dbe</code></a>
Add / ignore the new specification test suite property.</li>
<li><a
href="ebc90bb2df"><code>ebc90bb</code></a>
Merge commit '8fcfc3a674a7188a4fcc822b7a91efb3e0422a20'</li>
<li><a
href="8fcfc3a674"><code>8fcfc3a</code></a>
Squashed 'json/' changes from b41167c74..54f3784a8</li>
<li><a
href="30b7537944"><code>30b7537</code></a>
Pin pyenchant to pre from below until <a
href="https://redirect.github.com/pyenchant/pyenchant/issues/302">pyenchant/pyenchant#302</a>
is released.</li>
<li><a
href="c3729db732"><code>c3729db</code></a>
Enable doctests for the rest of the referencing page.</li>
<li><a
href="70a994ceab"><code>70a994c</code></a>
Remove a now-unneeded noqa since apparently this is fixed in new
ruff.</li>
<li><a
href="e6d0ef1cff"><code>e6d0ef1</code></a>
Fix a minor typo in the referencing example docs.</li>
<li><a
href="bceaf41a7d"><code>bceaf41</code></a>
Another placeholder benchmark for future optimization.</li>
<li><a
href="b20234e86c"><code>b20234e</code></a>
Consider errors from earlier indices (in instances) to be better
matches</li>
<li><a
href="41b49c68e5"><code>41b49c6</code></a>
Minor improvement to test failure message when a best match test
fails.</li>
<li>Additional commits viewable in <a
href="https://github.com/python-jsonschema/jsonschema/compare/v4.21.1...v4.22.0">compare
view</a></li>
</ul>
</details>
<br />


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<details>
<summary>Dependabot commands and options</summary>
<br />

You can trigger Dependabot actions by commenting on this PR:
- `@dependabot rebase` will rebase this PR
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.github/workflows/docker.yml

@@ -30,7 +30,7 @@ jobs:
         run: docker buildx inspect
 
       - name: Install Cosign
-        uses: sigstore/cosign-installer@v3.3.0
+        uses: sigstore/cosign-installer@v3.5.0
 
       - name: Checkout repository
         uses: actions/checkout@v4

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

@@ -14,7 +14,7 @@ jobs:
       # There's a 'download artifact' action, but it hasn't been updated for the workflow_run action
       # (https://github.com/actions/download-artifact/issues/60) so instead we get this mess:
       - name: 📥 Download artifact
-        uses: dawidd6/action-download-artifact@e7466d1a7587ed14867642c2ca74b5bcc1e19a2d # v3.0.0
+        uses: dawidd6/action-download-artifact@09f2f74827fd3a8607589e5ad7f9398816f540fe # v3.1.4
         with:
           workflow: docs-pr.yaml
           run_id: ${{ github.event.workflow_run.id }}

.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/latest_deps.yml

@@ -226,7 +226,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
-      - uses: JasonEtco/create-an-issue@e27dddc79c92bc6e4562f268fffa5ed752639abd # v2.9.1
+      - uses: JasonEtco/create-an-issue@1b14a70e4d8dc185e5cc76d3bec9eab20257b2c5 # v2.9.2
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:

.github/workflows/tests.yml

@@ -22,7 +22,7 @@ jobs:
       integration: ${{ !startsWith(github.ref, 'refs/pull/') || steps.filter.outputs.integration }}
       linting: ${{ !startsWith(github.ref, 'refs/pull/') || steps.filter.outputs.linting }}
     steps:
-    - uses: dorny/paths-filter@v2
+    - uses: dorny/paths-filter@v3
       id: filter
       # We only check on PRs
       if: startsWith(github.ref, 'refs/pull/')
@@ -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

.github/workflows/twisted_trunk.yml

@@ -207,7 +207,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
-      - uses: JasonEtco/create-an-issue@e27dddc79c92bc6e4562f268fffa5ed752639abd # v2.9.1
+      - uses: JasonEtco/create-an-issue@1b14a70e4d8dc185e5cc76d3bec9eab20257b2c5 # v2.9.2
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:

CHANGES.md

@@ -1,3 +1,354 @@
+# 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
+
+- Fix regression when using OIDC provider. Introduced in v1.104.0rc1. ([\#17031](https://github.com/element-hq/synapse/issues/17031))
+
+
+# Synapse 1.104.0rc1 (2024-03-26)
+
+### Features
+
+- Add an OIDC config to specify extra parameters for the authorization grant URL. IT can be useful to pass an ACR value for example. ([\#16971](https://github.com/element-hq/synapse/issues/16971))
+- Add support for OIDC provider returning JWT. ([\#16972](https://github.com/element-hq/synapse/issues/16972), [\#17031](https://github.com/element-hq/synapse/issues/17031))
+
+### Bugfixes
+
+- Fix a bug which meant that, under certain circumstances, we might never retry sending events or to-device messages over federation after a failure. ([\#16925](https://github.com/element-hq/synapse/issues/16925))
+- Fix various long-standing bugs which could cause incorrect state to be returned from `/sync` in certain situations. ([\#16949](https://github.com/element-hq/synapse/issues/16949))
+- Fix case in which `m.fully_read` marker would not get updated. Contributed by @SpiritCroc. ([\#16990](https://github.com/element-hq/synapse/issues/16990))
+- Fix bug which did not retract a user's pending knocks at rooms when their account was deactivated. Contributed by @hanadi92. ([\#17010](https://github.com/element-hq/synapse/issues/17010))
+
+### Updates to the Docker image
+
+- Updated `start.py` to generate config using the correct user ID when running as root (fixes [\#16824](https://github.com/element-hq/synapse/issues/16824), [\#15202](https://github.com/element-hq/synapse/issues/15202)). ([\#16978](https://github.com/element-hq/synapse/issues/16978))
+
+### Improved Documentation
+
+- Add a query to force a refresh of a remote user's device list to the "Useful SQL for Admins" documentation page. ([\#16892](https://github.com/element-hq/synapse/issues/16892))
+- Minor grammatical corrections to the upgrade documentation. ([\#16965](https://github.com/element-hq/synapse/issues/16965))
+- Fix the sort order for the documentation version picker, so that newer releases appear above older ones. ([\#16966](https://github.com/element-hq/synapse/issues/16966))
+- Remove recommendation for a specific poetry version from contributing guide. ([\#17002](https://github.com/element-hq/synapse/issues/17002))
+
+### Internal Changes
+
+- Improve lock performance when a lot of locks are all waiting for a single lock to be released. ([\#16840](https://github.com/element-hq/synapse/issues/16840))
+- Update power level default for public rooms. ([\#16907](https://github.com/element-hq/synapse/issues/16907))
+- Improve event validation. ([\#16908](https://github.com/element-hq/synapse/issues/16908))
+- Multi-worker-docker-container: disable log buffering. ([\#16919](https://github.com/element-hq/synapse/issues/16919))
+- Refactor state delta calculation in `/sync` handler. ([\#16929](https://github.com/element-hq/synapse/issues/16929))
+- Clarify docs for some room state functions. ([\#16950](https://github.com/element-hq/synapse/issues/16950))
+- Specify IP subnets in canonical form. ([\#16953](https://github.com/element-hq/synapse/issues/16953))
+- As done for SAML mapping provider, let's pass the module API to the OIDC one so the mapper can do more logic in its code. ([\#16974](https://github.com/element-hq/synapse/issues/16974))
+- Allow containers building on top of Synapse's Complement container is use the included PostgreSQL cluster. ([\#16985](https://github.com/element-hq/synapse/issues/16985))
+- Raise poetry-core version cap to 1.9.0. ([\#16986](https://github.com/element-hq/synapse/issues/16986))
+- Patch the db conn pool sooner in tests. ([\#17017](https://github.com/element-hq/synapse/issues/17017))
+
+
+
+### Updates to locked dependencies
+
+* Bump anyhow from 1.0.80 to 1.0.81. ([\#17009](https://github.com/element-hq/synapse/issues/17009))
+* Bump black from 23.10.1 to 24.2.0. ([\#16936](https://github.com/element-hq/synapse/issues/16936))
+* Bump cryptography from 41.0.7 to 42.0.5. ([\#16958](https://github.com/element-hq/synapse/issues/16958))
+* Bump dawidd6/action-download-artifact from 3.1.1 to 3.1.2. ([\#16960](https://github.com/element-hq/synapse/issues/16960))
+* Bump dawidd6/action-download-artifact from 3.1.2 to 3.1.4. ([\#17008](https://github.com/element-hq/synapse/issues/17008))
+* Bump jinja2 from 3.1.2 to 3.1.3. ([\#17005](https://github.com/element-hq/synapse/issues/17005))
+* Bump log from 0.4.20 to 0.4.21. ([\#16977](https://github.com/element-hq/synapse/issues/16977))
+* Bump mypy from 1.5.1 to 1.8.0. ([\#16901](https://github.com/element-hq/synapse/issues/16901))
+* Bump netaddr from 0.9.0 to 1.2.1. ([\#17006](https://github.com/element-hq/synapse/issues/17006))
+* Bump pydantic from 2.6.0 to 2.6.4. ([\#17004](https://github.com/element-hq/synapse/issues/17004))
+* Bump pyo3 from 0.20.2 to 0.20.3. ([\#16962](https://github.com/element-hq/synapse/issues/16962))
+* Bump ruff from 0.1.14 to 0.3.2. ([\#16994](https://github.com/element-hq/synapse/issues/16994))
+* Bump serde from 1.0.196 to 1.0.197. ([\#16963](https://github.com/element-hq/synapse/issues/16963))
+* Bump serde_json from 1.0.113 to 1.0.114. ([\#16961](https://github.com/element-hq/synapse/issues/16961))
+* Bump types-jsonschema from 4.21.0.20240118 to 4.21.0.20240311. ([\#17007](https://github.com/element-hq/synapse/issues/17007))
+* Bump types-psycopg2 from 2.9.21.16 to 2.9.21.20240311. ([\#16995](https://github.com/element-hq/synapse/issues/16995))
+* Bump types-pyopenssl from 23.3.0.0 to 24.0.0.20240311. ([\#17003](https://github.com/element-hq/synapse/issues/17003))
+
+# Synapse 1.103.0 (2024-03-19)
+
+No significant changes since 1.103.0rc1.
+
+
+
+
+# Synapse 1.103.0rc1 (2024-03-12)
+
+### Features
+
+- Add a new [List Accounts v3](https://element-hq.github.io/synapse/v1.103/admin_api/user_admin_api.html#list-accounts-v3) Admin API with improved deactivated user filtering capabilities. ([\#16874](https://github.com/element-hq/synapse/issues/16874))
+- Include `Retry-After` header by default per [MSC4041](https://github.com/matrix-org/matrix-spec-proposals/pull/4041). Contributed by @clokep. ([\#16947](https://github.com/element-hq/synapse/issues/16947))
+
+### Bugfixes
+
+- Fix joining remote rooms when a module uses the `on_new_event` callback. This callback may now pass partial state events instead of the full state for remote rooms. Introduced in v1.76.0. ([\#16973](https://github.com/element-hq/synapse/issues/16973))
+- Fix performance issue when joining very large rooms that can cause the server to lock up. Introduced in v1.100.0. Contributed by @ggogel. ([\#16968](https://github.com/element-hq/synapse/issues/16968))
+
+### Improved Documentation
+
+- Add HAProxy example for single port operation to reverse proxy documentation. Contributed by Georg Pfuetzenreuter (@tacerus). ([\#16768](https://github.com/element-hq/synapse/issues/16768))
+- Improve the documentation around running Complement tests with new configuration parameters. ([\#16946](https://github.com/element-hq/synapse/issues/16946))
+- Add docs on upgrading from a very old version. ([\#16951](https://github.com/element-hq/synapse/issues/16951))
+
+
+### Updates to locked dependencies
+
+* Bump JasonEtco/create-an-issue from 2.9.1 to 2.9.2. ([\#16934](https://github.com/element-hq/synapse/issues/16934))
+* Bump anyhow from 1.0.79 to 1.0.80. ([\#16935](https://github.com/element-hq/synapse/issues/16935))
+* Bump dawidd6/action-download-artifact from 3.0.0 to 3.1.1. ([\#16933](https://github.com/element-hq/synapse/issues/16933))
+* Bump furo from 2023.9.10 to 2024.1.29. ([\#16939](https://github.com/element-hq/synapse/issues/16939))
+* Bump pyopenssl from 23.3.0 to 24.0.0. ([\#16937](https://github.com/element-hq/synapse/issues/16937))
+* Bump types-netaddr from 0.10.0.20240106 to 1.2.0.20240219. ([\#16938](https://github.com/element-hq/synapse/issues/16938))
+
+
+# Synapse 1.102.0 (2024-03-05)
+
+### Bugfixes
+
+- Revert https://github.com/element-hq/synapse/pull/16756, which caused incorrect notification counts on mobile clients since v1.100.0. ([\#16979](https://github.com/element-hq/synapse/issues/16979))
+
+
+# Synapse 1.102.0rc1 (2024-02-20)
+
+### Features
+
+- A metric was added for emails sent by Synapse, broken down by type: `synapse_emails_sent_total`. Contributed by Remi Rampin. ([\#16881](https://github.com/element-hq/synapse/issues/16881))
+
+### Bugfixes
+
+- Do not send multiple concurrent requests for keys for the same server. ([\#16894](https://github.com/element-hq/synapse/issues/16894))
+- Fix performance issue when joining very large rooms that can cause the server to lock up. Introduced in v1.100.0. ([\#16903](https://github.com/element-hq/synapse/issues/16903))
+- Always prefer unthreaded receipt when >1 exist ([MSC4102](https://github.com/matrix-org/matrix-spec-proposals/pull/4102)). ([\#16927](https://github.com/element-hq/synapse/issues/16927))
+
+### Improved Documentation
+
+- Fix a small typo in the Rooms section of the Admin API documentation. Contributed by @RainerZufall187. ([\#16857](https://github.com/element-hq/synapse/issues/16857))
+
+### Internal Changes
+
+- Don't invalidate the entire event cache when we purge history. ([\#16905](https://github.com/element-hq/synapse/issues/16905))
+- Add experimental config option to not send device list updates for specific users. ([\#16909](https://github.com/element-hq/synapse/issues/16909))
+- Fix incorrect docker hub link in release script. ([\#16910](https://github.com/element-hq/synapse/issues/16910))
+
+
+
+### Updates to locked dependencies
+
+* Bump attrs from 23.1.0 to 23.2.0. ([\#16899](https://github.com/element-hq/synapse/issues/16899))
+* Bump bcrypt from 4.0.1 to 4.1.2. ([\#16900](https://github.com/element-hq/synapse/issues/16900))
+* Bump pygithub from 2.1.1 to 2.2.0. ([\#16902](https://github.com/element-hq/synapse/issues/16902))
+* Bump sentry-sdk from 1.40.0 to 1.40.3. ([\#16898](https://github.com/element-hq/synapse/issues/16898))
+
+# Synapse 1.101.0 (2024-02-13)
+
+### Bugfixes
+
+- Fix performance regression when fetching auth chains from the DB. Introduced in v1.100.0. ([\#16893](https://github.com/element-hq/synapse/issues/16893))
+
+
+
+
+# Synapse 1.101.0rc1 (2024-02-06)
+
+### Improved Documentation
+
+- Fix broken links in the documentation. ([\#16853](https://github.com/element-hq/synapse/issues/16853))
+- Update MacOS installation instructions to mention that libicu is optional. ([\#16854](https://github.com/element-hq/synapse/issues/16854))
+- The version picker now correctly lists versions after `v1.98.0`. ([\#16880](https://github.com/element-hq/synapse/issues/16880))
+
+### Internal Changes
+
+- Add support for stabilised [MSC3981](https://github.com/matrix-org/matrix-spec-proposals/pull/3981) that adds a `recurse` parameter on the `/relations` API. ([\#16842](https://github.com/element-hq/synapse/issues/16842))
+
+
+
+### Updates to locked dependencies
+
+* Bump dorny/paths-filter from 2 to 3. ([\#16869](https://github.com/element-hq/synapse/issues/16869))
+* Bump gitpython from 3.1.40 to 3.1.41. ([\#16850](https://github.com/element-hq/synapse/issues/16850))
+* Bump hiredis from 2.2.3 to 2.3.2. ([\#16862](https://github.com/element-hq/synapse/issues/16862))
+* Bump jsonschema from 4.20.0 to 4.21.1. ([\#16887](https://github.com/element-hq/synapse/issues/16887))
+* Bump lxml-stubs from 0.4.0 to 0.5.1. ([\#16885](https://github.com/element-hq/synapse/issues/16885))
+* Bump mypy-zope from 1.0.1 to 1.0.3. ([\#16865](https://github.com/element-hq/synapse/issues/16865))
+* Bump phonenumbers from 8.13.26 to 8.13.29. ([\#16868](https://github.com/element-hq/synapse/issues/16868))
+* Bump pydantic from 2.5.3 to 2.6.0. ([\#16888](https://github.com/element-hq/synapse/issues/16888))
+* Bump sentry-sdk from 1.39.1 to 1.40.0. ([\#16889](https://github.com/element-hq/synapse/issues/16889))
+* Bump serde from 1.0.195 to 1.0.196. ([\#16867](https://github.com/element-hq/synapse/issues/16867))
+* Bump serde_json from 1.0.111 to 1.0.113. ([\#16866](https://github.com/element-hq/synapse/issues/16866))
+* Bump sigstore/cosign-installer from 3.3.0 to 3.4.0. ([\#16890](https://github.com/element-hq/synapse/issues/16890))
+* Bump types-pillow from 10.1.0.2 to 10.2.0.20240125. ([\#16864](https://github.com/element-hq/synapse/issues/16864))
+* Bump types-requests from 2.31.0.10 to 2.31.0.20240125. ([\#16886](https://github.com/element-hq/synapse/issues/16886))
+* Bump types-setuptools from 69.0.0.0 to 69.0.0.20240125. ([\#16863](https://github.com/element-hq/synapse/issues/16863))
+
+# Synapse 1.100.0 (2024-01-30)
+
+No significant changes since 1.100.0rc3.
+
+
+
+
 # Synapse 1.100.0rc3 (2024-01-24)
 
 ### Bugfixes

Cargo.lock

@@ -13,9 +13,9 @@ dependencies = [
 
 [[package]]
 name = "anyhow"
-version = "1.0.79"
+version = "1.0.82"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "080e9890a082662b09c1ad45f567faeeb47f22b5fb23895fbe1e651e718e25ca"
+checksum = "f538837af36e6f6a9be0faa67f9a314f8119e4e4b5867c6ab40ed60360142519"
 
 [[package]]
 name = "arc-swap"
@@ -29,6 +29,12 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
 
+[[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"
@@ -53,12 +59,33 @@ 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"
@@ -71,15 +98,21 @@ 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",
  "subtle",
 ]
 
+[[package]]
+name = "fnv"
+version = "1.0.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
+
 [[package]]
 name = "generic-array"
 version = "0.14.6"
@@ -90,6 +123,43 @@ dependencies = [
  "version_check",
 ]
 
+[[package]]
+name = "getrandom"
+version = "0.2.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "94b22e06ecb0110981051723910cbf0b5f5e09a2062dd7663334ee79a9d1286c"
+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"
@@ -102,6 +172,23 @@ version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
 
+[[package]]
+name = "http"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+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 = "2.0.4"
@@ -114,6 +201,15 @@ version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4217ad341ebadf8d8e724e264f13e593e0648f5b3e94b3896a5df283be015ecc"
 
+[[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"
 version = "1.4.0"
@@ -122,9 +218,9 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "libc"
-version = "0.2.135"
+version = "0.2.153"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "68783febc7782c6c5cb401fbda4de5a9898be1762314da0bb2c10ced61f18b0c"
+checksum = "9c198f91728a82281a64e1f4f9eeb25d82cb32a5de251c6bd1b5154d63a8e7bd"
 
 [[package]]
 name = "lock_api"
@@ -138,9 +234,9 @@ dependencies = [
 
 [[package]]
 name = "log"
-version = "0.4.20"
+version = "0.4.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b5e6163cb8c49088c2c36f57875e58ccd8c87c7427f7fbd50ea6710b2f3f2e8f"
+checksum = "90ed8c1e510134f979dbc4f070f87d4313098b704861a105fe34231c70a3901c"
 
 [[package]]
 name = "memchr"
@@ -157,6 +253,12 @@ dependencies = [
  "autocfg",
 ]
 
+[[package]]
+name = "mime"
+version = "0.3.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6877bb514081ee2a7ff5ef9de3281f14a4dd4bceac4c09388074a6b5df8a139a"
+
 [[package]]
 name = "once_cell"
 version = "1.15.0"
@@ -186,6 +288,18 @@ dependencies = [
  "windows-sys",
 ]
 
+[[package]]
+name = "portable-atomic"
+version = "1.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7170ef9988bc169ba16dd36a7fa041e5c4cbeb6a35b76d4c03daded371eae7c0"
+
+[[package]]
+name = "ppv-lite86"
+version = "0.2.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5b40af805b3121feab8a3c29f04d8ad262fa8e0561883e7653e024ae4479e6de"
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.76"
@@ -197,9 +311,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3"
-version = "0.20.2"
+version = "0.20.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9a89dc7a5850d0e983be1ec2a463a171d20990487c3cfcd68b5363f1ee3d6fe0"
+checksum = "53bdbb96d49157e65d45cc287af5f32ffadd5f4761438b527b055fb0d4bb8233"
 dependencies = [
  "anyhow",
  "cfg-if",
@@ -207,6 +321,7 @@ dependencies = [
  "libc",
  "memoffset",
  "parking_lot",
+ "portable-atomic",
  "pyo3-build-config",
  "pyo3-ffi",
  "pyo3-macros",
@@ -215,9 +330,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-build-config"
-version = "0.20.2"
+version = "0.20.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "07426f0d8fe5a601f26293f300afd1a7b1ed5e78b2a705870c5f30893c5163be"
+checksum = "deaa5745de3f5231ce10517a1f5dd97d53e5a2fd77aa6b5842292085831d48d7"
 dependencies = [
  "once_cell",
  "target-lexicon",
@@ -225,9 +340,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-ffi"
-version = "0.20.2"
+version = "0.20.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dbb7dec17e17766b46bca4f1a4215a85006b4c2ecde122076c562dd058da6cf1"
+checksum = "62b42531d03e08d4ef1f6e85a2ed422eb678b8cd62b762e53891c05faf0d4afa"
 dependencies = [
  "libc",
  "pyo3-build-config",
@@ -246,9 +361,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-macros"
-version = "0.20.2"
+version = "0.20.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "05f738b4e40d50b5711957f142878cfa0f28e054aa0ebdfc3fd137a843f74ed3"
+checksum = "7305c720fa01b8055ec95e484a6eca7a83c841267f0dd5280f0c8b8551d2c158"
 dependencies = [
  "proc-macro2",
  "pyo3-macros-backend",
@@ -258,12 +373,13 @@ dependencies = [
 
 [[package]]
 name = "pyo3-macros-backend"
-version = "0.20.2"
+version = "0.20.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0fc910d4851847827daf9d6cdd4a823fbdaab5b8818325c5e97a86da79e8881f"
+checksum = "7c7e9b68bb9c3149c5b0cade5d07f953d6d125eb4337723c4ccdb665f1f96185"
 dependencies = [
  "heck",
  "proc-macro2",
+ "pyo3-build-config",
  "quote",
  "syn",
 ]
@@ -287,6 +403,36 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "rand"
+version = "0.8.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+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 = "0.2.16"
@@ -298,9 +444,9 @@ dependencies = [
 
 [[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",
@@ -339,18 +485,18 @@ checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
 
 [[package]]
 name = "serde"
-version = "1.0.195"
+version = "1.0.200"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "63261df402c67811e9ac6def069e4786148c4563f4b50fd4bf30aa370d626b02"
+checksum = "ddc6f9cc94d67c0e21aaf7eda3a010fd3af78ebf6e096aa6e2e13c79749cce4f"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.195"
+version = "1.0.200"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "46fe8f8603d81ba86327b23a2e9cdf49e1255fb94a4c5f297f6ee0547178ea2c"
+checksum = "856f046b9400cee3c8c94ed572ecdb752444c24528c035cd35882aad6f492bcb"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -359,15 +505,37 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.111"
+version = "1.0.116"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "176e46fa42316f18edd598015a5166857fc835ec732f5215eac6b7bdbf0a84f4"
+checksum = "3e17db7126d17feb94eb3fad46bf1a96b034e8aacbc2e775fe81505f8b0b2813"
 dependencies = [
  "itoa",
  "ryu",
  "serde",
 ]
 
+[[package]]
+name = "sha1"
+version = "0.10.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f04293dc80c3993519f2d7f6f511707ee7094fe0c6d3406feb330cdb3540eba3"
+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 = "1.10.0"
@@ -396,16 +564,23 @@ 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]]
@@ -420,6 +595,17 @@ version = "1.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dcf81ac59edc17cc8697ff311e8f5ef2d99fcbd9817b34cec66f90b6c3dfd987"
 
+[[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"
@@ -438,6 +624,76 @@ version = "0.9.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
 
+[[package]]
+name = "wasi"
+version = "0.11.0+wasi-snapshot-preview1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+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-sys"
 version = "0.36.1"

debian/changelog

@@ -1,3 +1,93 @@
+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.
+
+ -- Synapse Packaging team <packages@matrix.org>  Tue, 02 Apr 2024 17:15:45 +0100
+
+matrix-synapse-py3 (1.104.0~rc1) stable; urgency=medium
+
+  * New Synapse release 1.104.0rc1.
+
+ -- Synapse Packaging team <packages@matrix.org>  Tue, 26 Mar 2024 11:48:58 +0000
+
+matrix-synapse-py3 (1.103.0) stable; urgency=medium
+
+  * New Synapse release 1.103.0.
+
+ -- Synapse Packaging team <packages@matrix.org>  Tue, 19 Mar 2024 12:24:36 +0000
+
+matrix-synapse-py3 (1.103.0~rc1) stable; urgency=medium
+
+  * New Synapse release 1.103.0rc1.
+
+ -- Synapse Packaging team <packages@matrix.org>  Tue, 12 Mar 2024 15:02:56 +0000
+
+matrix-synapse-py3 (1.102.0) stable; urgency=medium
+
+  * New Synapse release 1.102.0.
+
+ -- Synapse Packaging team <packages@matrix.org>  Tue, 05 Mar 2024 14:47:03 +0000
+
+matrix-synapse-py3 (1.102.0~rc1) stable; urgency=medium
+
+  * New Synapse release 1.102.0rc1.
+
+ -- Synapse Packaging team <packages@matrix.org>  Tue, 20 Feb 2024 15:50:36 +0000
+
+matrix-synapse-py3 (1.101.0) stable; urgency=medium
+
+  * New Synapse release 1.101.0.
+
+ -- Synapse Packaging team <packages@matrix.org>  Tue, 13 Feb 2024 10:45:35 +0000
+
+matrix-synapse-py3 (1.101.0~rc1) stable; urgency=medium
+
+  * New Synapse release 1.101.0rc1.
+
+ -- Synapse Packaging team <packages@matrix.org>  Tue, 06 Feb 2024 16:02:02 +0000
+
+matrix-synapse-py3 (1.100.0) stable; urgency=medium
+
+  * New Synapse release 1.100.0.
+
+ -- Synapse Packaging team <packages@matrix.org>  Tue, 30 Jan 2024 16:58:19 +0000
+
 matrix-synapse-py3 (1.100.0~rc3) stable; urgency=medium
 
   * New Synapse release 1.100.0rc3.

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/README.md

@@ -30,3 +30,14 @@ Consult `scripts-dev/complement.sh` in the repository root for a real example.
 
 [complement]: https://github.com/matrix-org/complement
 [complementEnv]: https://github.com/matrix-org/complement/pull/382
+
+## How to modify homeserver.yaml for Complement tests
+
+It's common for MSCs to be gated behind a feature flag like this:
+```yaml
+experimental_features:
+  faster_joins: true
+```
+To modify this for the Complement image, modify `./conf/workers-shared-extra.yaml.j2`. Despite the name,
+this will affect non-worker mode as well. Remember to _rebuild_ the image (so don't use `-e` if using
+`complement.sh`).

docker/complement/conf/postgres.supervisord.conf

@@ -1,7 +1,7 @@
 [program:postgres]
 command=/usr/local/bin/prefix-log gosu postgres postgres
 
-# Only start if START_POSTGRES=1
+# Only start if START_POSTGRES=true
 autostart=%(ENV_START_POSTGRES)s
 
 # Lower priority number = starts first

docker/complement/conf/start_for_complement.sh

@@ -32,8 +32,9 @@ case "$SYNAPSE_COMPLEMENT_DATABASE" in
     ;;
 
   sqlite|"")
-    # Configure supervisord not to start Postgres, as we don't need it
-    export START_POSTGRES=false
+    # Set START_POSTGRES to false unless it has already been set
+    # (i.e. by another container image inheriting our own).
+    export START_POSTGRES=${START_POSTGRES:-false}
     ;;
 
   *)

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

@@ -310,6 +310,13 @@ WORKERS_CONFIG: Dict[str, Dict[str, Any]] = {
         "shared_extra_conf": {},
         "worker_extra_conf": "",
     },
+    "push_rules": {
+        "app": "synapse.app.generic_worker",
+        "listener_resources": ["client", "replication"],
+        "endpoint_patterns": ["^/_matrix/client/(api/v1|r0|v3|unstable)/pushrules/"],
+        "shared_extra_conf": {},
+        "worker_extra_conf": "",
+    },
 }
 
 # Templates for sections that may be inserted multiple times in config files
@@ -401,6 +408,7 @@ def add_worker_roles_to_shared_config(
         "receipts",
         "to_device",
         "typing",
+        "push_rules",
     ]
 
     # Worker-type specific sharding config. Now a single worker can fulfill multiple

docker/prefix-log

@@ -7,6 +7,9 @@
 #   prefix-log command [args...]
 #
 
-exec 1> >(awk '{print "'"${SUPERVISOR_PROCESS_NAME}"' | "$0}' >&1)
-exec 2> >(awk '{print "'"${SUPERVISOR_PROCESS_NAME}"' | "$0}' >&2)
+# '-W interactive' is a `mawk` extension which disables buffering on stdout and sets line-buffered reads on
+# stdin. The effect is that the output is flushed after each line, rather than being batched, which helps reduce
+# confusion due to to interleaving of the different processes.
+exec 1> >(awk -W interactive '{print "'"${SUPERVISOR_PROCESS_NAME}"' | "$0 }' >&1)
+exec 2> >(awk -W interactive '{print "'"${SUPERVISOR_PROCESS_NAME}"' | "$0 }' >&2)
 exec "$@"

docker/start.py

@@ -160,11 +160,6 @@ def run_generate_config(environ: Mapping[str, str], ownership: Optional[str]) ->
     config_path = environ.get("SYNAPSE_CONFIG_PATH", config_dir + "/homeserver.yaml")
     data_dir = environ.get("SYNAPSE_DATA_DIR", "/data")
 
-    if ownership is not None:
-        # make sure that synapse has perms to write to the data dir.
-        log(f"Setting ownership on {data_dir} to {ownership}")
-        subprocess.run(["chown", ownership, data_dir], check=True)
-
     # create a suitable log config from our template
     log_config_file = "%s/%s.log.config" % (config_dir, server_name)
     if not os.path.exists(log_config_file):
@@ -189,9 +184,15 @@ def run_generate_config(environ: Mapping[str, str], ownership: Optional[str]) ->
         "--generate-config",
         "--open-private-ports",
     ]
+
+    if ownership is not None:
+        # make sure that synapse has perms to write to the data dir.
+        log(f"Setting ownership on {data_dir} to {ownership}")
+        subprocess.run(["chown", ownership, data_dir], check=True)
+        args = ["gosu", ownership] + args
+
     # log("running %s" % (args, ))
-    flush_buffers()
-    os.execv(sys.executable, args)
+    subprocess.run(args, check=True)
 
 
 def main(args: List[str], environ: MutableMapping[str, str]) -> None:

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/rooms.md

@@ -913,7 +913,7 @@ With all that being said, if you still want to try and recover the room:
    them handle rejoining themselves.
 
 4. If `new_room_user_id` was given, a 'Content Violation' will have been
-   created. Consider whether you want to delete that roomm.
+   created. Consider whether you want to delete that room.
 
 # Make Room Admin API
 

docs/admin_api/user_admin_api.md

@@ -164,6 +164,7 @@ Body parameters:
   Other allowed options are: `bot` and `support`.
 
 ## List Accounts
+### List Accounts (V2)
 
 This API returns all local user accounts.
 By default, the response is ordered by ascending user ID.
@@ -287,6 +288,19 @@ The following fields are returned in the JSON response body:
 
 *Added in Synapse 1.93:* the `locked` query parameter and response field.
 
+### List Accounts (V3)
+
+This API returns all local user accounts (see v2). In contrast to v2, the query parameter `deactivated` is handled differently.
+
+```
+GET /_synapse/admin/v3/users
+```
+
+**Parameters**
+- `deactivated` - Optional flag to filter deactivated users. If `true`, only deactivated users are returned.
+  If `false`, deactivated users are excluded from the query. When the flag is absent (the default),
+  users are not filtered by deactivation status.
+
 ## Query current sessions for a user
 
 This API returns information about the active sessions for a specific user.

docs/development/contributing_guide.md

@@ -68,7 +68,7 @@ Of their installation methods, we recommend
 
 ```shell
 pip install --user pipx
-pipx install poetry==1.5.1  # Problems with Poetry 1.6, see https://github.com/matrix-org/synapse/issues/16147
+pipx install poetry
 ```
 
 but see poetry's [installation instructions](https://python-poetry.org/docs/#installation)
@@ -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:
@@ -329,7 +331,7 @@ This configuration should generally cover your needs.
 - To run with Postgres, supply the `-e POSTGRES=1 -e MULTI_POSTGRES=1` environment flags.
 - To run with Synapse in worker mode, supply the `-e WORKERS=1 -e REDIS=1` environment flags (in addition to the Postgres flags).
 
-For more details about other configurations, see the [Docker-specific documentation in the SyTest repo](https://github.com/vector-im/sytest/blob/develop/docker/README.md).
+For more details about other configurations, see the [Docker-specific documentation in the SyTest repo](https://github.com/matrix-org/sytest/blob/develop/docker/README.md).
 
 
 ## Run the integration tests ([Complement](https://github.com/matrix-org/complement)).

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/modules/third_party_rules_callbacks.md

@@ -142,6 +142,10 @@ Called after sending an event into a room. The module is passed the event, as we
 as the state of the room _after_ the event. This means that if the event is a state event,
 it will be included in this state.
 
+The state map may not be complete if Synapse hasn't yet loaded the full state
+of the room. This can happen for events in rooms that were just joined from
+a remote server.
+
 Note that this callback is called when the event has already been processed and stored
 into the room, which means this callback cannot be used to deny persisting the event. To
 deny an incoming event, see [`check_event_for_spam`](spam_checker_callbacks.md#check_event_for_spam) instead.

docs/other/running_synapse_on_single_board_computers.md

@@ -12,7 +12,7 @@ This is the main reason people have a poor matrix experience on resource constra
 
 While synapse does have some performance issues with presence [#3971](https://github.com/matrix-org/synapse/issues/3971), the fundamental problem is that this is an easy feature to implement for a centralised service at nearly no overhead, but federation makes it combinatorial [#8055](https://github.com/matrix-org/synapse/issues/8055). There is also a client-side config option which disables the UI and idle tracking [enable_presence_by_hs_url] to blacklist the largest instances but I didn't notice much difference, so I recommend disabling the feature entirely at the server level as well.
 
-[enable_presence_by_hs_url]: https://github.com/vector-im/element-web/blob/v1.7.8/config.sample.json#L45
+[enable_presence_by_hs_url]: https://github.com/element-hq/element-web/blob/v1.7.8/config.sample.json#L45
 
 ### Joining
 

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
@@ -182,7 +182,7 @@ synapse_port_db --sqlite-database homeserver.db.snapshot \
     --postgres-config homeserver-postgres.yaml
 ```
 
-The flag `--curses` displays a coloured curses progress UI.
+The flag `--curses` displays a coloured curses progress UI. (NOTE: if your terminal is too small the script will error out)
 
 If the script took a long time to complete, or time has otherwise passed
 since the original snapshot was taken, repeat the previous steps with a

docs/reverse_proxy.md

@@ -186,6 +186,25 @@ Example configuration, if using a UNIX socket. The configuration lines regarding
 backend matrix
   server matrix unix@/run/synapse/main_public.sock
 ```
+Example configuration when using a single port for both client and federation traffic.
+```
+frontend https
+  bind *:443,[::]:443 ssl crt /etc/ssl/haproxy/ strict-sni alpn h2,http/1.1
+  http-request set-header X-Forwarded-Proto https if { ssl_fc }
+  http-request set-header X-Forwarded-Proto http  if !{ ssl_fc }
+  http-request set-header X-Forwarded-For %[src]
+
+  acl matrix-host hdr(host) -i matrix.example.com matrix.example.com:443
+  acl matrix-sni  ssl_fc_sni   matrix.example.com
+  acl matrix-path path_beg     /_matrix
+  acl matrix-path path_beg     /_synapse/client
+
+  use_backend matrix if matrix-host matrix-path
+  use_backend matrix if matrix-sni
+
+backend matrix
+  server matrix 127.0.0.1:8008
+```
 
 [Delegation](delegate.md) example:
 ```

docs/setup/installation.md

@@ -26,7 +26,7 @@ for most users.
 #### Docker images and Ansible playbooks
 
 There is an official synapse image available at
-<https://hub.docker.com/r/vectorim/synapse> or at [`ghcr.io/element-hq/synapse`](https://ghcr.io/element-hq/synapse)
+<https://hub.docker.com/r/matrixdotorg/synapse> or at [`ghcr.io/element-hq/synapse`](https://ghcr.io/element-hq/synapse)
 which can be used with the docker-compose file available at
 [contrib/docker](https://github.com/element-hq/synapse/tree/develop/contrib/docker).
 Further information on this including configuration options is available in the README
@@ -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).
@@ -326,6 +326,17 @@ Some extra dependencies may be needed. You can use Homebrew (https://brew.sh) fo
 You may need to install icu, and make the icu binaries and libraries accessible.
 Please follow [the official instructions of PyICU](https://pypi.org/project/PyICU/) to do so.
 
+If you're struggling to get icu discovered, and see:
+```
+  RuntimeError:
+  Please install pkg-config on your system or set the ICU_VERSION environment
+  variable to the version of ICU you have installed.
+```
+despite it being installed and having your `PATH` updated, you can omit this dependency by
+not specifying `--extras all` to `poetry`. If using postgres, you can install Synapse via
+`poetry install --extras saml2 --extras oidc --extras postgres --extras opentracing --extras redis --extras sentry`.
+ICU is not a hard dependency on getting a working installation.
+
 On ARM-based Macs you may also need to install libjpeg and libpq:
 ```sh
  brew install jpeg libpq

docs/setup/turn/coturn.md

@@ -136,8 +136,8 @@ This will install and start a systemd service called `coturn`.
     NB: If your TLS certificate was provided by Let's Encrypt, TLS/DTLS will
     not work with any Matrix client that uses Chromium's WebRTC library. This
     currently includes Element Android & iOS; for more details, see their
-    [respective](https://github.com/vector-im/element-android/issues/1533)
-    [issues](https://github.com/vector-im/element-ios/issues/2712) as well as the underlying
+    [respective](https://github.com/element-hq/element-android/issues/1533)
+    [issues](https://github.com/element-hq/element-ios/issues/2712) as well as the underlying
     [WebRTC issue](https://bugs.chromium.org/p/webrtc/issues/detail?id=11710).
     Consider using a ZeroSSL certificate for your TURN server as a working alternative.
 

docs/setup/turn/eturnal.md

@@ -137,8 +137,8 @@ must be edited:
     NB: If your TLS certificate was provided by Let's Encrypt, TLS/DTLS will
     not work with any Matrix client that uses Chromium's WebRTC library. This
     currently includes Element Android & iOS; for more details, see their
-    [respective](https://github.com/vector-im/element-android/issues/1533)
-    [issues](https://github.com/vector-im/element-ios/issues/2712) as well as the underlying
+    [respective](https://github.com/element-hq/element-android/issues/1533)
+    [issues](https://github.com/element-hq/element-ios/issues/2712) as well as the underlying
     [WebRTC issue](https://bugs.chromium.org/p/webrtc/issues/detail?id=11710).
     Consider using a ZeroSSL certificate for your TURN server as a working alternative.
 

docs/sso_mapping_providers.md

@@ -50,11 +50,13 @@ comment these options out and use those specified by the module instead.
 
 A custom mapping provider must specify the following methods:
 
-* `def __init__(self, parsed_config)`
+* `def __init__(self, parsed_config, module_api)`
    - Arguments:
      - `parsed_config` - A configuration object that is the return value of the
        `parse_config` method. You should set any configuration options needed by
        the module here.
+     - `module_api` - a `synapse.module_api.ModuleApi` object which provides the
+       stable API available for extension modules.
 * `def parse_config(config)`
     - This method should have the `@staticmethod` decoration.
     - Arguments:
@@ -96,6 +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

@@ -88,15 +88,43 @@ process, for example:
     dpkg -i matrix-synapse-py3_1.3.0+stretch1_amd64.deb
     ```
 
-Generally Synapse database schemas are compatible across multiple versions, once
-a version of Synapse is deployed you may not be able to rollback automatically.
+Generally Synapse database schemas are compatible across multiple versions, but once
+a version of Synapse is deployed you may not be able to roll back automatically.
 The following table gives the version ranges and the earliest version they can
 be rolled back to. E.g. Synapse versions v1.58.0 through v1.61.1 can be rolled
-back safely to v1.57.0, but starting with v1.62.0 it is only safe to rollback to
+back safely to v1.57.0, but starting with v1.62.0 it is only safe to roll back to
 v1.61.0.
 
 <!-- REPLACE_WITH_SCHEMA_VERSIONS -->
 
+## Upgrading from a very old version
+
+You need to read all of the upgrade notes for each version between your current
+version and the latest so that you can update your dependencies, environment,
+config files, etc. if necessary. But you do not need to perform an
+upgrade to each individual version that was missed.
+
+We do not have a list of which versions must be installed. Instead, we recommend
+that you upgrade through each incompatible database schema version, which would
+give you the ability to roll back the maximum number of versions should anything
+go wrong. See [Rolling back to older versions](#rolling-back-to-older-versions)
+above.
+
+Additionally, new versions of Synapse will occasionally run database migrations
+and background updates to update the database. Synapse will not start until
+database migrations are complete. You should wait until background updates from
+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

@@ -120,6 +120,11 @@ for file in $source_directory/*; do
 done
 ```
 
+How do I upgrade from a very old version of Synapse to the latest?
+---
+See [this](../../upgrade.html#upgrading-from-a-very-old-version) section in the
+upgrade docs.
+
 Manually resetting passwords
 ---
 Users can reset their password through their client. Alternatively, a server admin
@@ -236,7 +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.

docs/usage/administration/useful_sql_for_admins.md

@@ -205,3 +205,12 @@ SELECT user_id, device_id, user_agent, TO_TIMESTAMP(last_seen / 1000) AS "last_s
   FROM devices
   WHERE last_seen < DATE_PART('epoch', NOW() - INTERVAL '3 month') * 1000;
 ```
+
+## Clear the cache of a remote user's device list
+
+Forces the resync of a remote user's device list - if you have somehow cached a bad state, and the remote server is
+will not send out a device list update.
+```sql
+INSERT INTO device_lists_remote_resync
+VALUES ('USER_ID', (EXTRACT(epoch FROM NOW()) * 1000)::BIGINT);
+```

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.
@@ -1317,6 +1317,12 @@ 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 +1348,8 @@ 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.
 
@@ -3349,6 +3357,9 @@ Options for each entry include:
    not included in `scopes`. Set to `userinfo_endpoint` to always use the
    userinfo endpoint.
 
+* `additional_authorization_parameters`: String to string dictionary that will be passed as
+   additional parameters to the authorization grant URL.
+
 * `allow_existing_users`: set to true to allow a user logging in via OIDC to
    match a pre-existing account instead of failing. This could be used if
    switching from password logins to OIDC. Defaults to false.
@@ -3473,6 +3484,8 @@ oidc_providers:
     token_endpoint: "https://accounts.example.com/oauth2/token"
     userinfo_endpoint: "https://accounts.example.com/userinfo"
     jwks_uri: "https://accounts.example.com/.well-known/jwks.json"
+    additional_authorization_parameters:
+      acr_values: 2fa
     skip_verification: true
     enable_registration: true
     user_mapping_provider:

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/website_files/version-picker.js

@@ -54,7 +54,7 @@ function fetchVersions(dropdown, dropdownMenu) {
     return new Promise((resolve, reject) => {
         window.addEventListener("load", () => {
 
-            fetch("https://api.github.com/repos/matrix-org/synapse/git/trees/gh-pages", {
+            fetch("https://api.github.com/repos/element-hq/synapse/git/trees/gh-pages", {
                 cache: "force-cache",
             }).then(res => 
                 res.json()
@@ -100,10 +100,30 @@ function sortVersions(a, b) {
     if (a === 'develop' || a === 'latest') return -1;
     if (b === 'develop' || b === 'latest') return 1;
 
-    const versionA = (a.match(/v\d+(\.\d+)+/) || [])[0];
-    const versionB = (b.match(/v\d+(\.\d+)+/) || [])[0];
+    // If any of the versions do not confrom to a semantic version string, they
+    // will be sorted behind a valid version.
+    const versionA = (a.match(/v(\d+(\.\d+)+)/) || [])[1]?.split('.') ?? '';
+    const versionB = (b.match(/v(\d+(\.\d+)+)/) || [])[1]?.split('.') ?? '';
 
-    return versionB.localeCompare(versionA);
+    for (let i = 0; i < Math.max(versionA.length, versionB.length); i++) {
+        if (versionB[i] === undefined) {
+            return -1;
+        }
+        if (versionA[i] === undefined) {
+            return 1;
+        }
+
+        const partA = parseInt(versionA[i], 10);
+        const partB = parseInt(versionB[i], 10);
+
+        if (partA > partB) {
+            return -1;
+        } else if (partB > partA) {
+            return 1;
+        }
+    }
+
+    return 0;
 }
 
 /**
@@ -124,4 +144,4 @@ function changeVersion(url, newVersion) {
     parsedURL.pathname = pathSegments.join('/');
   
     return parsedURL.href;
-}
+}

docs/workers.md

@@ -232,7 +232,7 @@ 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$
@@ -532,6 +532,13 @@ the stream writer for the `presence` stream:
 
     ^/_matrix/client/(api/v1|r0|v3|unstable)/presence/
 
+##### The `push_rules` stream
+
+The following endpoints should be routed directly to the worker configured as
+the stream writer for the `push` stream:
+
+    ^/_matrix/client/(api/v1|r0|v3|unstable)/pushrules/
+
 #### Restrict outbound federation traffic to a specific set of workers
 
 The
@@ -627,9 +634,9 @@ 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/vector-im/sygnal) and email.
+[sygnal](https://github.com/matrix-org/sygnal) and email.
 
 This will stop the main process sending push notifications.
 

pyproject.toml

@@ -96,7 +96,7 @@ module-name = "synapse.synapse_rust"
 
 [tool.poetry]
 name = "matrix-synapse"
-version = "1.100.0rc3"
+version = "1.107.0rc1"
 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 = "0.1.14"
+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,<2024.0.0"
-
-
 [build-system]
 # The upper bounds here are defensive, intended to prevent situations like
 # https://github.com/matrix-org/synapse/issues/13849 and
@@ -382,7 +371,7 @@ furo = ">=2022.12.7,<2024.0.0"
 # runtime errors caused by build system changes.
 # We are happy to raise these upper bounds upon request,
 # provided we check that it's safe to do so (i.e. that CI passes).
-requires = ["poetry-core>=1.1.0,<=1.8.1", "setuptools_rust>=1.3,<=1.8.1"]
+requires = ["poetry-core>=1.1.0,<=1.9.0", "setuptools_rust>=1.3,<=1.8.1"]
 build-backend = "poetry.core.masonry.api"
 
 

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"
@@ -23,8 +23,13 @@ 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"
+mime = "0.3.17"
 pyo3 = { version = "0.20.0", features = [
     "macros",
     "anyhow",
@@ -34,8 +39,10 @@ pyo3 = { version = "0.20.0", features = [
 pyo3-log = "0.9.0"
 pythonize = "0.20.0"
 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/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.
 //!
@@ -234,6 +236,9 @@ 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);
 

rust/src/http.rs

@@ -0,0 +1,165 @@
+/*
+ * 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::{PyBytes, PySequence, PyTuple},
+    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: &PyAny, chunk_size: usize) -> PyResult<Bytes> {
+    let mut buf = BytesMut::new();
+    loop {
+        let bytes: &PyBytes = body.call_method1("read", (chunk_size,))?.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: &PyAny) -> PyResult<Request<Bytes>> {
+    let content = request.getattr("content")?;
+    let body = read_io_body(content, 4096)?;
+
+    let mut req = Request::new(body);
+
+    let uri: &PyBytes = request.getattr("uri")?.downcast()?;
+    *req.uri_mut() =
+        Uri::try_from(uri.as_bytes()).map_err(|_| PyValueError::new_err("invalid uri"))?;
+
+    let method: &PyBytes = request.getattr("method")?.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: &PyTuple = header.downcast()?;
+        let name: &PyBytes = header.get_item(0)?.downcast()?;
+        let name = HeaderName::from_bytes(name.as_bytes())
+            .map_err(|_| PyValueError::new_err("invalid header name"))?;
+
+        let values: &PySequence = header.get_item(1)?.downcast()?;
+        for index in 0..values.len()? {
+            let value: &PyBytes = values.get_item(index)?.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: &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();
@@ -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/rendezvous/mod.rs

@@ -0,0 +1,315 @@
+/*
+ * 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::PyModule, 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: &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.as_ref(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: &PyAny) -> PyResult<()> {
+        let request = http_request_from_twisted(twisted_request)?;
+
+        let content_type = self.check_input_headers(request.headers())?;
+
+        let clock = self.clock.as_ref(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: &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: &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: &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: &PyModule) -> PyResult<()> {
+    let child_module = PyModule::new(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("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

scripts-dev/release.py

@@ -660,7 +660,7 @@ def _announce() -> None:
 Hi everyone. Synapse {current_version} has just been released.
 
 [notes](https://github.com/element-hq/synapse/releases/tag/{tag_name}) | \
-[docker](https://hub.docker.com/r/vectorim/synapse/tags?name={tag_name}) | \
+[docker](https://hub.docker.com/r/matrixdotorg/synapse/tags?name={tag_name}) | \
 [debs](https://packages.matrix.org/debian/) | \
 [pypi](https://pypi.org/project/matrix-synapse/{current_version}/)"""
     )

synapse/_scripts/synapse_port_db.py

@@ -60,7 +60,7 @@ from synapse.logging.context import (
 )
 from synapse.notifier import ReplicationNotifier
 from synapse.storage.database import DatabasePool, LoggingTransaction, make_conn
-from synapse.storage.databases.main import FilteringWorkerStore, PushRuleStore
+from synapse.storage.databases.main import FilteringWorkerStore
 from synapse.storage.databases.main.account_data import AccountDataWorkerStore
 from synapse.storage.databases.main.client_ips import ClientIpBackgroundUpdateStore
 from synapse.storage.databases.main.deviceinbox import DeviceInboxBackgroundUpdateStore
@@ -77,10 +77,8 @@ from synapse.storage.databases.main.media_repository import (
 )
 from synapse.storage.databases.main.presence import PresenceBackgroundUpdateStore
 from synapse.storage.databases.main.profile import ProfileWorkerStore
-from synapse.storage.databases.main.pusher import (
-    PusherBackgroundUpdatesStore,
-    PusherWorkerStore,
-)
+from synapse.storage.databases.main.push_rule import PusherWorkerStore
+from synapse.storage.databases.main.pusher import PusherBackgroundUpdatesStore
 from synapse.storage.databases.main.receipts import ReceiptsBackgroundUpdateStore
 from synapse.storage.databases.main.registration import (
     RegistrationBackgroundUpdateStore,
@@ -129,7 +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"],
@@ -245,7 +243,6 @@ class Store(
     AccountDataWorkerStore,
     FilteringWorkerStore,
     ProfileWorkerStore,
-    PushRuleStore,
     PusherWorkerStore,
     PusherBackgroundUpdatesStore,
     PresenceBackgroundUpdateStore,
@@ -1040,10 +1037,10 @@ class Porter:
         return done, remaining + done
 
     async def _setup_state_group_id_seq(self) -> None:
-        curr_id: Optional[
-            int
-        ] = await self.sqlite_store.db_pool.simple_select_one_onecol(
-            table="state_groups", keyvalues={}, retcol="MAX(id)", allow_none=True
+        curr_id: Optional[int] = (
+            await self.sqlite_store.db_pool.simple_select_one_onecol(
+                table="state_groups", keyvalues={}, retcol="MAX(id)", allow_none=True
+            )
         )
 
         if not curr_id:
@@ -1132,13 +1129,13 @@ class Porter:
         )
 
     async def _setup_auth_chain_sequence(self) -> None:
-        curr_chain_id: Optional[
-            int
-        ] = await self.sqlite_store.db_pool.simple_select_one_onecol(
-            table="event_auth_chains",
-            keyvalues={},
-            retcol="MAX(chain_id)",
-            allow_none=True,
+        curr_chain_id: Optional[int] = (
+            await self.sqlite_store.db_pool.simple_select_one_onecol(
+                table="event_auth_chains",
+                keyvalues={},
+                retcol="MAX(chain_id)",
+                allow_none=True,
+            )
         )
 
         def r(txn: LoggingTransaction) -> None:

synapse/api/constants.py

@@ -43,7 +43,6 @@ MAIN_TIMELINE: Final = "main"
 
 
 class Membership:
-
     """Represents the membership states of a user in a room."""
 
     INVITE: Final = "invite"
@@ -130,6 +129,8 @@ class EventTypes:
 
     Reaction: Final = "m.reaction"
 
+    CallInvite: Final = "m.call.invite"
+
 
 class ToDeviceEventTypes:
     RoomKeyRequest: Final = "m.room_key_request"
@@ -233,6 +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/api/errors.py

@@ -517,8 +517,6 @@ class InvalidCaptchaError(SynapseError):
 class LimitExceededError(SynapseError):
     """A client has sent too many requests and is being throttled."""
 
-    include_retry_after_header = False
-
     def __init__(
         self,
         limiter_name: str,
@@ -526,9 +524,10 @@ class LimitExceededError(SynapseError):
         retry_after_ms: Optional[int] = None,
         errcode: str = Codes.LIMIT_EXCEEDED,
     ):
+        # Use HTTP header Retry-After to enable library-assisted retry handling.
         headers = (
             {"Retry-After": str(math.ceil(retry_after_ms / 1000))}
-            if self.include_retry_after_header and retry_after_ms is not None
+            if retry_after_ms is not None
             else None
         )
         super().__init__(code, "Too Many Requests", errcode, headers=headers)

synapse/api/room_versions.py

@@ -370,9 +370,11 @@ class RoomVersionCapability:
 
 MSC3244_CAPABILITIES = {
     cap.identifier: {
-        "preferred": cap.preferred_version.identifier
-        if cap.preferred_version is not None
-        else None,
+        "preferred": (
+            cap.preferred_version.identifier
+            if cap.preferred_version is not None
+            else None
+        ),
         "support": [
             v.identifier
             for v in KNOWN_ROOM_VERSIONS.values()

synapse/app/homeserver.py

@@ -188,9 +188,9 @@ class SynapseHomeServer(HomeServer):
                     PasswordResetSubmitTokenResource,
                 )
 
-                resources[
-                    "/_synapse/client/password_reset/email/submit_token"
-                ] = PasswordResetSubmitTokenResource(self)
+                resources["/_synapse/client/password_reset/email/submit_token"] = (
+                    PasswordResetSubmitTokenResource(self)
+                )
 
         if name == "consent":
             from synapse.rest.consent.consent_resource import ConsentResource

synapse/appservice/api.py

@@ -362,16 +362,16 @@ class ApplicationServiceApi(SimpleHttpClient):
         # TODO: Update to stable prefixes once MSC3202 completes FCP merge
         if service.msc3202_transaction_extensions:
             if one_time_keys_count:
-                body[
-                    "org.matrix.msc3202.device_one_time_key_counts"
-                ] = one_time_keys_count
-                body[
-                    "org.matrix.msc3202.device_one_time_keys_count"
-                ] = one_time_keys_count
+                body["org.matrix.msc3202.device_one_time_key_counts"] = (
+                    one_time_keys_count
+                )
+                body["org.matrix.msc3202.device_one_time_keys_count"] = (
+                    one_time_keys_count
+                )
             if unused_fallback_keys:
-                body[
-                    "org.matrix.msc3202.device_unused_fallback_key_types"
-                ] = unused_fallback_keys
+                body["org.matrix.msc3202.device_unused_fallback_key_types"] = (
+                    unused_fallback_keys
+                )
             if device_list_summary:
                 body["org.matrix.msc3202.device_lists"] = {
                     "changed": list(device_list_summary.changed),

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

@@ -25,7 +25,6 @@ from typing import TYPE_CHECKING, Any, Optional
 import attr
 import attr.validators
 
-from synapse.api.errors import LimitExceededError
 from synapse.api.room_versions import KNOWN_ROOM_VERSIONS, RoomVersions
 from synapse.config import ConfigError
 from synapse.config._base import Config, RootConfig
@@ -394,11 +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", {}))
@@ -410,19 +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
-        )
-
-        # MSC4041: Use HTTP header Retry-After to enable library-assisted retry handling
-        #
-        # This is a bit hacky, but the most reasonable way to *alway* include the
-        # headers.
-        LimitExceededError.include_retry_after_header = experimental.get(
-            "msc4041_enabled", False
-        )
-
         self.msc4028_push_encrypted_events = experimental.get(
             "msc4028_push_encrypted_events", False
         )
@@ -430,3 +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/oidc.py

@@ -342,6 +342,9 @@ def _parse_oidc_config_dict(
         user_mapping_provider_config=user_mapping_provider_config,
         attribute_requirements=attribute_requirements,
         enable_registration=oidc_config.get("enable_registration", True),
+        additional_authorization_parameters=oidc_config.get(
+            "additional_authorization_parameters", {}
+        ),
     )
 
 
@@ -444,3 +447,6 @@ class OidcProviderConfig:
 
     # Whether automatic registrations are enabled in the ODIC flow. Defaults to True
     enable_registration: bool
+
+    # Additional parameters that will be passed to the authorization grant URL
+    additional_authorization_parameters: Mapping[str, str]

synapse/config/registration.py

@@ -171,9 +171,9 @@ class RegistrationConfig(Config):
             refreshable_access_token_lifetime = self.parse_duration(
                 refreshable_access_token_lifetime
             )
-        self.refreshable_access_token_lifetime: Optional[
-            int
-        ] = refreshable_access_token_lifetime
+        self.refreshable_access_token_lifetime: Optional[int] = (
+            refreshable_access_token_lifetime
+        )
 
         if (
             self.session_lifetime is not None
@@ -237,6 +237,14 @@ class RegistrationConfig(Config):
 
         self.inhibit_user_in_use_error = config.get("inhibit_user_in_use_error", False)
 
+        # List of user IDs not to send out device list updates for when they
+        # register new devices. This is useful to handle bot accounts.
+        #
+        # Note: This will still send out device list updates if the device is
+        # later updated, e.g. end to end keys are added.
+        dont_notify_new_devices_for = config.get("dont_notify_new_devices_for", [])
+        self.dont_notify_new_devices_for = frozenset(dont_notify_new_devices_for)
+
     def generate_config_section(
         self, generate_secrets: bool = False, **kwargs: Any
     ) -> str:

synapse/config/repository.py

@@ -199,9 +199,9 @@ class ContentRepositoryConfig(Config):
                 provider_config["module"] == "file_system"
                 or provider_config["module"] == "synapse.rest.media.v1.storage_provider"
             ):
-                provider_config[
-                    "module"
-                ] = "synapse.media.storage_provider.FileStorageProviderBackend"
+                provider_config["module"] = (
+                    "synapse.media.storage_provider.FileStorageProviderBackend"
+                )
 
             provider_class, parsed_config = load_module(
                 provider_config, ("media_storage_providers", "<item %i>" % i)

synapse/config/workers.py

@@ -156,6 +156,8 @@ class WriterLocations:
             can only be a single instance.
         presence: The instances that write to the presence stream. Currently
             can only be a single instance.
+        push_rules: The instances that write to the push stream. Currently
+            can only be a single instance.
     """
 
     events: List[str] = attr.ib(
@@ -182,6 +184,10 @@ class WriterLocations:
         default=["master"],
         converter=_instance_to_list_converter,
     )
+    push_rules: List[str] = attr.ib(
+        default=["master"],
+        converter=_instance_to_list_converter,
+    )
 
 
 @attr.s(auto_attribs=True)
@@ -341,6 +347,7 @@ class WorkerConfig(Config):
             "account_data",
             "receipts",
             "presence",
+            "push_rules",
         ):
             instances = _instance_to_list_converter(getattr(self.writers, stream))
             for instance in instances:
@@ -378,6 +385,11 @@ class WorkerConfig(Config):
                 "Must only specify one instance to handle `presence` messages."
             )
 
+        if len(self.writers.push_rules) != 1:
+            raise ConfigError(
+                "Must only specify one instance to handle `push` messages."
+            )
+
         self.events_shard_config = RoutableShardedWorkerHandlingConfig(
             self.writers.events
         )

synapse/crypto/keyring.py

@@ -839,11 +839,12 @@ class ServerKeyFetcher(BaseV2KeyFetcher):
             Map from server_name -> key_id -> FetchKeyResult
         """
 
+        # We only need to do one request per server.
+        servers_to_fetch = {k.server_name for k in keys_to_fetch}
+
         results = {}
 
-        async def get_keys(key_to_fetch_item: _FetchKeyRequest) -> None:
-            server_name = key_to_fetch_item.server_name
-
+        async def get_keys(server_name: str) -> None:
             try:
                 keys = await self.get_server_verify_keys_v2_direct(server_name)
                 results[server_name] = keys
@@ -852,7 +853,7 @@ class ServerKeyFetcher(BaseV2KeyFetcher):
             except Exception:
                 logger.exception("Error getting keys from %s", server_name)
 
-        await yieldable_gather_results(get_keys, keys_to_fetch)
+        await yieldable_gather_results(get_keys, servers_to_fetch)
         return results
 
     async def get_server_verify_keys_v2_direct(

synapse/event_auth.py

@@ -23,7 +23,20 @@
 import collections.abc
 import logging
 import typing
-from typing import Any, Dict, Iterable, List, Mapping, Optional, Set, Tuple, Union
+from typing import (
+    Any,
+    ChainMap,
+    Dict,
+    Iterable,
+    List,
+    Mapping,
+    MutableMapping,
+    Optional,
+    Set,
+    Tuple,
+    Union,
+    cast,
+)
 
 from canonicaljson import encode_canonical_json
 from signedjson.key import decode_verify_key_bytes
@@ -75,8 +88,7 @@ class _EventSourceStore(Protocol):
         redact_behaviour: EventRedactBehaviour,
         get_prev_content: bool = False,
         allow_rejected: bool = False,
-    ) -> Dict[str, "EventBase"]:
-        ...
+    ) -> Dict[str, "EventBase"]: ...
 
 
 def validate_event_for_room_version(event: "EventBase") -> None:
@@ -175,12 +187,22 @@ async def check_state_independent_auth_rules(
         return
 
     # 2. Reject if event has auth_events that: ...
+    auth_events: ChainMap[str, EventBase] = ChainMap()
     if batched_auth_events:
-        # Copy the batched auth events to avoid mutating them.
-        auth_events = dict(batched_auth_events)
-        needed_auth_event_ids = set(event.auth_event_ids()) - batched_auth_events.keys()
+        # batched_auth_events can become very large. To avoid repeatedly copying it, which
+        # would significantly impact performance, we use a ChainMap.
+        # batched_auth_events must be cast to MutableMapping because .new_child() requires
+        # this type. This casting is safe as the mapping is never mutated.
+        auth_events = auth_events.new_child(
+            cast(MutableMapping[str, "EventBase"], batched_auth_events)
+        )
+        needed_auth_event_ids = [
+            event_id
+            for event_id in event.auth_event_ids()
+            if event_id not in batched_auth_events
+        ]
         if needed_auth_event_ids:
-            auth_events.update(
+            auth_events = auth_events.new_child(
                 await store.get_events(
                     needed_auth_event_ids,
                     redact_behaviour=EventRedactBehaviour.as_is,
@@ -188,10 +210,12 @@ async def check_state_independent_auth_rules(
                 )
             )
     else:
-        auth_events = await store.get_events(
-            event.auth_event_ids(),
-            redact_behaviour=EventRedactBehaviour.as_is,
-            allow_rejected=True,
+        auth_events = auth_events.new_child(
+            await store.get_events(
+                event.auth_event_ids(),
+                redact_behaviour=EventRedactBehaviour.as_is,
+                allow_rejected=True,
+            )
         )
 
     room_id = event.room_id

synapse/events/__init__.py

@@ -93,16 +93,14 @@ class DictProperty(Generic[T]):
         self,
         instance: Literal[None],
         owner: Optional[Type[_DictPropertyInstance]] = None,
-    ) -> "DictProperty":
-        ...
+    ) -> "DictProperty": ...
 
     @overload
     def __get__(
         self,
         instance: _DictPropertyInstance,
         owner: Optional[Type[_DictPropertyInstance]] = None,
-    ) -> T:
-        ...
+    ) -> T: ...
 
     def __get__(
         self,
@@ -161,16 +159,14 @@ class DefaultDictProperty(DictProperty, Generic[T]):
         self,
         instance: Literal[None],
         owner: Optional[Type[_DictPropertyInstance]] = None,
-    ) -> "DefaultDictProperty":
-        ...
+    ) -> "DefaultDictProperty": ...
 
     @overload
     def __get__(
         self,
         instance: _DictPropertyInstance,
         owner: Optional[Type[_DictPropertyInstance]] = None,
-    ) -> T:
-        ...
+    ) -> T: ...
 
     def __get__(
         self,

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
@@ -612,9 +632,9 @@ class EventClientSerializer:
         serialized_aggregations = {}
 
         if event_aggregations.references:
-            serialized_aggregations[
-                RelationTypes.REFERENCE
-            ] = event_aggregations.references
+            serialized_aggregations[RelationTypes.REFERENCE] = (
+                event_aggregations.references
+            )
 
         if event_aggregations.replace:
             # Include information about it in the relations dict.

synapse/federation/federation_server.py

@@ -169,9 +169,9 @@ class FederationServer(FederationBase):
 
         # We cache responses to state queries, as they take a while and often
         # come in waves.
-        self._state_resp_cache: ResponseCache[
-            Tuple[str, Optional[str]]
-        ] = ResponseCache(hs.get_clock(), "state_resp", timeout_ms=30000)
+        self._state_resp_cache: ResponseCache[Tuple[str, Optional[str]]] = (
+            ResponseCache(hs.get_clock(), "state_resp", timeout_ms=30000)
+        )
         self._state_ids_resp_cache: ResponseCache[Tuple[str, str]] = ResponseCache(
             hs.get_clock(), "state_ids_resp", timeout_ms=30000
         )
@@ -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/send_queue.py

@@ -88,9 +88,9 @@ class FederationRemoteSendQueue(AbstractFederationSender):
         # Stores the destinations we need to explicitly send presence to about a
         # given user.
         # Stream position -> (user_id, destinations)
-        self.presence_destinations: SortedDict[
-            int, Tuple[str, Iterable[str]]
-        ] = SortedDict()
+        self.presence_destinations: SortedDict[int, Tuple[str, Iterable[str]]] = (
+            SortedDict()
+        )
 
         # (destination, key) -> EDU
         self.keyed_edu: Dict[Tuple[str, tuple], Edu] = {}

synapse/federation/sender/__init__.py

@@ -192,10 +192,9 @@ sent_pdus_destination_dist_total = Counter(
 )
 
 # Time (in s) to wait before trying to wake up destinations that have
-# catch-up outstanding. This will also be the delay applied at startup
-# before trying the same.
+# catch-up outstanding.
 # Please note that rate limiting still applies, so while the loop is
-# executed every X seconds the destinations may not be wake up because
+# executed every X seconds the destinations may not be woken up because
 # they are being rate limited following previous attempt failures.
 WAKEUP_RETRY_PERIOD_SEC = 60
 
@@ -428,18 +427,17 @@ class FederationSender(AbstractFederationSender):
             / hs.config.ratelimiting.federation_rr_transactions_per_room_per_second
         )
 
+        self._external_cache = hs.get_external_cache()
+        self._destination_wakeup_queue = _DestinationWakeupQueue(self, self.clock)
+
         # Regularly wake up destinations that have outstanding PDUs to be caught up
-        self.clock.looping_call(
+        self.clock.looping_call_now(
             run_as_background_process,
             WAKEUP_RETRY_PERIOD_SEC * 1000.0,
             "wake_destinations_needing_catchup",
             self._wake_destinations_needing_catchup,
         )
 
-        self._external_cache = hs.get_external_cache()
-
-        self._destination_wakeup_queue = _DestinationWakeupQueue(self, self.clock)
-
     def _get_per_destination_queue(self, destination: str) -> PerDestinationQueue:
         """Get or create a PerDestinationQueue for the given destination
 

synapse/handlers/account.py

@@ -118,10 +118,10 @@ class AccountHandler:
             }
 
             if self._use_account_validity_in_account_status:
-                status[
-                    "org.matrix.expired"
-                ] = await self._account_validity_handler.is_user_expired(
-                    user_id.to_string()
+                status["org.matrix.expired"] = (
+                    await self._account_validity_handler.is_user_expired(
+                        user_id.to_string()
+                    )
                 )
 
         return status

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/auth.py

@@ -2185,7 +2185,7 @@ class PasswordAuthProvider:
                 # result is always the right type, but as it is 3rd party code it might not be
 
                 if not isinstance(result, tuple) or len(result) != 2:
-                    logger.warning(
+                    logger.warning(  # type: ignore[unreachable]
                         "Wrong type returned by module API callback %s: %s, expected"
                         " Optional[Tuple[str, Optional[Callable]]]",
                         callback,
@@ -2248,7 +2248,7 @@ class PasswordAuthProvider:
                 # result is always the right type, but as it is 3rd party code it might not be
 
                 if not isinstance(result, tuple) or len(result) != 2:
-                    logger.warning(
+                    logger.warning(  # type: ignore[unreachable]
                         "Wrong type returned by module API callback %s: %s, expected"
                         " Optional[Tuple[str, Optional[Callable]]]",
                         callback,

synapse/handlers/deactivate_account.py

@@ -18,9 +18,11 @@
 # [This file includes modifications made by New Vector Limited]
 #
 #
+import itertools
 import logging
 from typing import TYPE_CHECKING, Optional
 
+from synapse.api.constants import Membership
 from synapse.api.errors import SynapseError
 from synapse.handlers.device import DeviceHandler
 from synapse.metrics.background_process_metrics import run_as_background_process
@@ -168,9 +170,9 @@ class DeactivateAccountHandler:
         # parts users from rooms (if it isn't already running)
         self._start_user_parting()
 
-        # Reject all pending invites for the user, so that the user doesn't show up in the
-        # "invited" section of rooms' members list.
-        await self._reject_pending_invites_for_user(user_id)
+        # Reject all pending invites and knocks for the user, so that the
+        # user doesn't show up in the "invited" section of rooms' members list.
+        await self._reject_pending_invites_and_knocks_for_user(user_id)
 
         # Remove all information on the user from the account_validity table.
         if self._account_validity_enabled:
@@ -194,34 +196,37 @@ class DeactivateAccountHandler:
 
         return identity_server_supports_unbinding
 
-    async def _reject_pending_invites_for_user(self, user_id: str) -> None:
-        """Reject pending invites addressed to a given user ID.
+    async def _reject_pending_invites_and_knocks_for_user(self, user_id: str) -> None:
+        """Reject pending invites and knocks addressed to a given user ID.
 
         Args:
-            user_id: The user ID to reject pending invites for.
+            user_id: The user ID to reject pending invites and knocks for.
         """
         user = UserID.from_string(user_id)
         pending_invites = await self.store.get_invited_rooms_for_local_user(user_id)
+        pending_knocks = await self.store.get_knocked_at_rooms_for_local_user(user_id)
 
-        for room in pending_invites:
+        for room in itertools.chain(pending_invites, pending_knocks):
             try:
                 await self._room_member_handler.update_membership(
                     create_requester(user, authenticated_entity=self._server_name),
                     user,
                     room.room_id,
-                    "leave",
+                    Membership.LEAVE,
                     ratelimit=False,
                     require_consent=False,
                 )
                 logger.info(
-                    "Rejected invite for deactivated user %r in room %r",
+                    "Rejected %r for deactivated user %r in room %r",
+                    room.membership,
                     user_id,
                     room.room_id,
                 )
             except Exception:
                 logger.exception(
-                    "Failed to reject invite for user %r in room %r:"
+                    "Failed to reject %r for user %r in room %r:"
                     " ignoring and continuing",
+                    room.membership,
                     user_id,
                     room.room_id,
                 )
@@ -256,11 +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

@@ -429,6 +429,10 @@ class DeviceHandler(DeviceWorkerHandler):
         self._storage_controllers = hs.get_storage_controllers()
         self.db_pool = hs.get_datastores().main.db_pool
 
+        self._dont_notify_new_devices_for = (
+            hs.config.registration.dont_notify_new_devices_for
+        )
+
         self.device_list_updater = DeviceListUpdater(hs, self)
 
         federation_registry = hs.get_federation_registry()
@@ -505,6 +509,9 @@ class DeviceHandler(DeviceWorkerHandler):
 
         self._check_device_name_length(initial_device_display_name)
 
+        # Check if we should send out device lists updates for this new device.
+        notify = user_id not in self._dont_notify_new_devices_for
+
         if device_id is not None:
             new_device = await self.store.store_device(
                 user_id=user_id,
@@ -514,7 +521,8 @@ class DeviceHandler(DeviceWorkerHandler):
                 auth_provider_session_id=auth_provider_session_id,
             )
             if new_device:
-                await self.notify_device_update(user_id, [device_id])
+                if notify:
+                    await self.notify_device_update(user_id, [device_id])
             return device_id
 
         # if the device id is not specified, we'll autogen one, but loop a few
@@ -530,7 +538,8 @@ class DeviceHandler(DeviceWorkerHandler):
                 auth_provider_session_id=auth_provider_session_id,
             )
             if new_device:
-                await self.notify_device_update(user_id, [new_device_id])
+                if notify:
+                    await self.notify_device_update(user_id, [new_device_id])
                 return new_device_id
             attempts += 1
 

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/directory.py

@@ -265,9 +265,9 @@ class DirectoryHandler:
     async def get_association(self, room_alias: RoomAlias) -> JsonDict:
         room_id = None
         if self.hs.is_mine(room_alias):
-            result: Optional[
-                RoomAliasMapping
-            ] = await self.get_association_from_room_alias(room_alias)
+            result: Optional[RoomAliasMapping] = (
+                await self.get_association_from_room_alias(room_alias)
+            )
 
             if result:
                 room_id = result.room_id

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/federation.py

@@ -1001,11 +1001,11 @@ class FederationHandler:
                     )
 
                 if include_auth_user_id:
-                    event_content[
-                        EventContentFields.AUTHORISING_USER
-                    ] = await self._event_auth_handler.get_user_which_could_invite(
-                        room_id,
-                        state_ids,
+                    event_content[EventContentFields.AUTHORISING_USER] = (
+                        await self._event_auth_handler.get_user_which_could_invite(
+                            room_id,
+                            state_ids,
+                        )
                     )
 
         builder = self.event_builder_factory.for_room_version(

synapse/handlers/federation_event.py

@@ -1367,9 +1367,9 @@ class FederationEventHandler:
             )
 
         if remote_event.is_state() and remote_event.rejected_reason is None:
-            state_map[
-                (remote_event.type, remote_event.state_key)
-            ] = remote_event.event_id
+            state_map[(remote_event.type, remote_event.state_key)] = (
+                remote_event.event_id
+            )
 
         return state_map
 
@@ -1757,17 +1757,25 @@ class FederationEventHandler:
 
             events_and_contexts_to_persist.append((event, context))
 
-        for event in sorted_auth_events:
+        for i, event in enumerate(sorted_auth_events):
             await prep(event)
 
-        await self.persist_events_and_notify(
-            room_id,
-            events_and_contexts_to_persist,
-            # Mark these events backfilled as they're historic events that will
-            # eventually be backfilled. For example, missing events we fetch
-            # during backfill should be marked as backfilled as well.
-            backfilled=True,
-        )
+            # The above function is typically not async, and so won't yield to
+            # the reactor. For large rooms let's yield to the reactor
+            # occasionally to ensure we don't block other work.
+            if (i + 1) % 1000 == 0:
+                await self._clock.sleep(0)
+
+        # Also persist the new event in batches for similar reasons as above.
+        for batch in batch_iter(events_and_contexts_to_persist, 1000):
+            await self.persist_events_and_notify(
+                room_id,
+                batch,
+                # Mark these events as backfilled as they're historic events that will
+                # eventually be backfilled. For example, missing events we fetch
+                # during backfill should be marked as backfilled as well.
+                backfilled=True,
+            )
 
     @trace
     async def _check_event_auth(

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/message.py

@@ -34,6 +34,7 @@ from synapse.api.constants import (
     EventTypes,
     GuestAccess,
     HistoryVisibility,
+    JoinRules,
     Membership,
     RelationTypes,
     UserTypes,
@@ -1325,6 +1326,18 @@ class EventCreationHandler:
 
         self.validator.validate_new(event, self.config)
         await self._validate_event_relation(event)
+
+        if event.type == EventTypes.CallInvite:
+            room_id = event.room_id
+            room_info = await self.store.get_room_with_stats(room_id)
+            assert room_info is not None
+
+            if room_info.join_rules == JoinRules.PUBLIC:
+                raise SynapseError(
+                    403,
+                    "Call invites are not allowed in public rooms.",
+                    Codes.FORBIDDEN,
+                )
         logger.debug("Created event %s", event.event_id)
 
         return event, context
@@ -1654,9 +1667,9 @@ class EventCreationHandler:
                     expiry_ms=60 * 60 * 1000,
                 )
 
-                self._external_cache_joined_hosts_updates[
-                    state_entry.state_group
-                ] = None
+                self._external_cache_joined_hosts_updates[state_entry.state_group] = (
+                    None
+                )
 
     async def _validate_canonical_alias(
         self,

synapse/handlers/oidc.py

@@ -65,6 +65,7 @@ from synapse.http.server import finish_request
 from synapse.http.servlet import parse_string
 from synapse.http.site import SynapseRequest
 from synapse.logging.context import make_deferred_yieldable
+from synapse.module_api import ModuleApi
 from synapse.types import JsonDict, UserID, map_username_to_mxid_localpart
 from synapse.util import Clock, json_decoder
 from synapse.util.caches.cached_call import RetryOnExceptionCachedCall
@@ -421,9 +422,19 @@ class OidcProvider:
         # from the IdP's jwks_uri, if required.
         self._jwks = RetryOnExceptionCachedCall(self._load_jwks)
 
-        self._user_mapping_provider = provider.user_mapping_provider_class(
-            provider.user_mapping_provider_config
+        user_mapping_provider_init_method = (
+            provider.user_mapping_provider_class.__init__
         )
+        if len(inspect.signature(user_mapping_provider_init_method).parameters) == 3:
+            self._user_mapping_provider = provider.user_mapping_provider_class(
+                provider.user_mapping_provider_config,
+                ModuleApi(hs, hs.get_auth_handler()),
+            )
+        else:
+            self._user_mapping_provider = provider.user_mapping_provider_class(
+                provider.user_mapping_provider_config,
+            )
+
         self._skip_verification = provider.skip_verification
         self._allow_existing_users = provider.allow_existing_users
 
@@ -442,6 +453,10 @@ class OidcProvider:
         # optional brand identifier for this auth provider
         self.idp_brand = provider.idp_brand
 
+        self.additional_authorization_parameters = (
+            provider.additional_authorization_parameters
+        )
+
         self._sso_handler = hs.get_sso_handler()
         self._device_handler = hs.get_device_handler()
 
@@ -818,14 +833,38 @@ class OidcProvider:
         logger.debug("Using the OAuth2 access_token to request userinfo")
         metadata = await self.load_metadata()
 
-        resp = await self._http_client.get_json(
+        resp = await self._http_client.request(
+            "GET",
             metadata["userinfo_endpoint"],
-            headers={"Authorization": ["Bearer {}".format(token["access_token"])]},
+            headers=Headers(
+                {"Authorization": ["Bearer {}".format(token["access_token"])]}
+            ),
         )
 
-        logger.debug("Retrieved user info from userinfo endpoint: %r", resp)
+        body = await readBody(resp)
 
-        return UserInfo(resp)
+        content_type_headers = resp.headers.getRawHeaders("Content-Type")
+        assert content_type_headers
+        # We use `startswith` because the header value can contain the `charset` parameter
+        # even if it is useless, and Twisted doesn't take care of that for us.
+        if content_type_headers[0].startswith("application/jwt"):
+            alg_values = metadata.get(
+                "id_token_signing_alg_values_supported", ["RS256"]
+            )
+            jwt = JsonWebToken(alg_values)
+            jwk_set = await self.load_jwks()
+            try:
+                decoded_resp = jwt.decode(body, key=jwk_set)
+            except ValueError:
+                logger.info("Reloading JWKS after decode error")
+                jwk_set = await self.load_jwks(force=True)  # try reloading the jwks
+                decoded_resp = jwt.decode(body, key=jwk_set)
+        else:
+            decoded_resp = json_decoder.decode(body.decode("utf-8"))
+
+        logger.debug("Retrieved user info from userinfo endpoint: %r", decoded_resp)
+
+        return UserInfo(decoded_resp)
 
     async def _verify_jwt(
         self,
@@ -971,17 +1010,21 @@ class OidcProvider:
 
         metadata = await self.load_metadata()
 
+        additional_authorization_parameters = dict(
+            self.additional_authorization_parameters
+        )
         # Automatically enable PKCE if it is supported.
-        extra_grant_values = {}
         if metadata.get("code_challenge_methods_supported"):
             code_verifier = generate_token(48)
 
             # Note that we verified the server supports S256 earlier (in
             # OidcProvider._validate_metadata).
-            extra_grant_values = {
-                "code_challenge_method": "S256",
-                "code_challenge": create_s256_code_challenge(code_verifier),
-            }
+            additional_authorization_parameters.update(
+                {
+                    "code_challenge_method": "S256",
+                    "code_challenge": create_s256_code_challenge(code_verifier),
+                }
+            )
 
         cookie = self._macaroon_generaton.generate_oidc_session_token(
             state=state,
@@ -1020,7 +1063,7 @@ class OidcProvider:
             scope=self._scopes,
             state=state,
             nonce=nonce,
-            **extra_grant_values,
+            **additional_authorization_parameters,
         )
 
     async def handle_oidc_callback(
@@ -1583,7 +1626,7 @@ class JinjaOidcMappingProvider(OidcMappingProvider[JinjaOidcMappingConfig]):
     This is the default mapping provider.
     """
 
-    def __init__(self, config: JinjaOidcMappingConfig):
+    def __init__(self, config: JinjaOidcMappingConfig, module_api: ModuleApi):
         self._config = config
 
     @staticmethod

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/presence.py

@@ -493,9 +493,9 @@ class WorkerPresenceHandler(BasePresenceHandler):
 
         # The number of ongoing syncs on this process, by (user ID, device ID).
         # Empty if _presence_enabled is false.
-        self._user_device_to_num_current_syncs: Dict[
-            Tuple[str, Optional[str]], int
-        ] = {}
+        self._user_device_to_num_current_syncs: Dict[Tuple[str, Optional[str]], int] = (
+            {}
+        )
 
         self.notifier = hs.get_notifier()
         self.instance_id = hs.get_instance_id()
@@ -818,9 +818,9 @@ class PresenceHandler(BasePresenceHandler):
 
         # Keeps track of the number of *ongoing* syncs on this process. While
         # this is non zero a user will never go offline.
-        self._user_device_to_num_current_syncs: Dict[
-            Tuple[str, Optional[str]], int
-        ] = {}
+        self._user_device_to_num_current_syncs: Dict[Tuple[str, Optional[str]], int] = (
+            {}
+        )
 
         # Keeps track of the number of *ongoing* syncs on other processes.
         #

synapse/handlers/profile.py

@@ -320,9 +320,9 @@ class ProfileHandler:
             server_name = host
 
         if self._is_mine_server_name(server_name):
-            media_info: Optional[
-                Union[LocalMedia, RemoteMedia]
-            ] = await self.store.get_local_media(media_id)
+            media_info: Optional[Union[LocalMedia, RemoteMedia]] = (
+                await self.store.get_local_media(media_id)
+            )
         else:
             media_info = await self.store.get_cached_remote_media(server_name, media_id)
 

synapse/handlers/read_marker.py

@@ -55,12 +55,12 @@ class ReadMarkerHandler:
 
             should_update = True
             # Get event ordering, this also ensures we know about the event
-            event_ordering = await self.store.get_event_ordering(event_id)
+            event_ordering = await self.store.get_event_ordering(event_id, room_id)
 
             if existing_read_marker:
                 try:
                     old_event_ordering = await self.store.get_event_ordering(
-                        existing_read_marker["event_id"]
+                        existing_read_marker["event_id"], room_id
                     )
                 except SynapseError:
                     # Old event no longer exists, assume new is ahead. This may

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
@@ -188,13 +190,13 @@ class RelationsHandler:
         if include_original_event:
             # Do not bundle aggregations when retrieving the original event because
             # we want the content before relations are applied to it.
-            return_value[
-                "original_event"
-            ] = await self._event_serializer.serialize_event(
-                event,
-                now,
-                bundle_aggregations=None,
-                config=serialize_options,
+            return_value["original_event"] = (
+                await self._event_serializer.serialize_event(
+                    event,
+                    now,
+                    bundle_aggregations=None,
+                    config=serialize_options,
+                )
             )
 
         if next_token:
@@ -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

@@ -151,7 +151,7 @@ class RoomCreationHandler:
                 "history_visibility": HistoryVisibility.SHARED,
                 "original_invitees_have_ops": False,
                 "guest_can_join": False,
-                "power_level_content_override": {},
+                "power_level_content_override": {EventTypes.CallInvite: 50},
             },
         }
 
@@ -538,10 +538,10 @@ class RoomCreationHandler:
         # deep-copy the power-levels event before we start modifying it
         # note that if frozen_dicts are enabled, `power_levels` will be a frozen
         # dict so we can't just copy.deepcopy it.
-        initial_state[
-            (EventTypes.PowerLevels, "")
-        ] = power_levels = copy_and_fixup_power_levels_contents(
-            initial_state[(EventTypes.PowerLevels, "")]
+        initial_state[(EventTypes.PowerLevels, "")] = power_levels = (
+            copy_and_fixup_power_levels_contents(
+                initial_state[(EventTypes.PowerLevels, "")]
+            )
         )
 
         # Resolve the minimum power level required to send any state event
@@ -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
@@ -1362,9 +1363,11 @@ class RoomCreationHandler:
         visibility = room_config.get("visibility", "private")
         preset_name = room_config.get(
             "preset",
-            RoomCreationPreset.PRIVATE_CHAT
-            if visibility == "private"
-            else RoomCreationPreset.PUBLIC_CHAT,
+            (
+                RoomCreationPreset.PRIVATE_CHAT
+                if visibility == "private"
+                else RoomCreationPreset.PUBLIC_CHAT
+            ),
         )
         try:
             preset_config = self._presets_dict[preset_name]
@@ -1473,6 +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

@@ -51,6 +51,7 @@ from synapse.handlers.worker_lock import NEW_EVENT_DURING_PURGE_LOCK_NAME
 from synapse.logging import opentracing
 from synapse.metrics import event_processing_positions
 from synapse.metrics.background_process_metrics import run_as_background_process
+from synapse.replication.http.push import ReplicationCopyPusherRestServlet
 from synapse.storage.databases.main.state_deltas import StateDelta
 from synapse.types import (
     JsonDict,
@@ -181,6 +182,12 @@ class RoomMemberHandler(metaclass=abc.ABCMeta):
             hs.config.server.forgotten_room_retention_period
         )
 
+        self._is_push_writer = (
+            hs.get_instance_name() in hs.config.worker.writers.push_rules
+        )
+        self._push_writer = hs.config.worker.writers.push_rules[0]
+        self._copy_push_client = ReplicationCopyPusherRestServlet.make_client(hs)
+
     def _on_user_joined_room(self, event_id: str, room_id: str) -> None:
         """Notify the rate limiter that a room join has occurred.
 
@@ -745,6 +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:
@@ -1236,11 +1273,11 @@ class RoomMemberHandler(metaclass=abc.ABCMeta):
         # If this is going to be a local join, additional information must
         # be included in the event content in order to efficiently validate
         # the event.
-        content[
-            EventContentFields.AUTHORISING_USER
-        ] = await self.event_auth_handler.get_user_which_could_invite(
-            room_id,
-            state_before_join,
+        content[EventContentFields.AUTHORISING_USER] = (
+            await self.event_auth_handler.get_user_which_could_invite(
+                room_id,
+                state_before_join,
+            )
         )
 
         return False, []
@@ -1301,9 +1338,17 @@ class RoomMemberHandler(metaclass=abc.ABCMeta):
                     old_room_id, new_room_id, user_id
                 )
                 # Copy over push rules
-                await self.store.copy_push_rules_from_room_to_room_for_user(
-                    old_room_id, new_room_id, user_id
-                )
+                if self._is_push_writer:
+                    await self.store.copy_push_rules_from_room_to_room_for_user(
+                        old_room_id, new_room_id, user_id
+                    )
+                else:
+                    await self._copy_push_client(
+                        instance_name=self._push_writer,
+                        user_id=user_id,
+                        old_room_id=old_room_id,
+                        new_room_id=new_room_id,
+                    )
             except Exception:
                 logger.exception(
                     "Error copying tags and/or push rules from rooms %s to %s for user %s. "

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

@@ -150,7 +150,7 @@ class UserAttributes:
     display_name: Optional[str] = None
     picture: Optional[str] = None
     # mypy thinks these are incompatible for some reason.
-    emails: StrCollection = attr.Factory(list)  # type: ignore[assignment]
+    emails: StrCollection = attr.Factory(list)
 
 
 @attr.s(slots=True, auto_attribs=True)
@@ -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

@@ -41,6 +41,7 @@ from synapse.api.constants import (
     AccountDataTypes,
     EventContentFields,
     EventTypes,
+    JoinRules,
     Membership,
 )
 from synapse.api.filtering import FilterCollection
@@ -595,6 +596,7 @@ 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:
@@ -675,13 +677,23 @@ class SyncHandler:
                         )
                     )
 
-                loaded_recents = await filter_events_for_client(
+                filtered_recents = await filter_events_for_client(
                     self._storage_controllers,
                     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 = []
+                for event in filtered_recents:
+                    if event.type == EventTypes.CallInvite:
+                        room_info = await self.store.get_room_with_stats(event.room_id)
+                        assert room_info is not None
+                        if room_info.join_rules == JoinRules.PUBLIC:
+                            continue
+                    loaded_recents.append(event)
+
                 log_kv({"loaded_recents_after_client_filtering": len(loaded_recents)})
 
                 loaded_recents.extend(recents)
@@ -943,7 +955,7 @@ class SyncHandler:
         batch: TimelineBatch,
         sync_config: SyncConfig,
         since_token: Optional[StreamToken],
-        now_token: StreamToken,
+        end_token: StreamToken,
         full_state: bool,
     ) -> MutableStateMap[EventBase]:
         """Works out the difference in state between the end of the previous sync and
@@ -954,7 +966,9 @@ class SyncHandler:
             batch: The timeline batch for the room that will be sent to the user.
             sync_config:
             since_token: Token of the end of the previous batch. May be `None`.
-            now_token: Token of the end of the current batch.
+            end_token: Token of the end of the current batch. Normally this will be
+                the same as the global "now_token", but if the user has left the room,
+                the point just after their leave event.
             full_state: Whether to force returning the full state.
                 `lazy_load_members` still applies when `full_state` is `True`.
 
@@ -1014,30 +1028,6 @@ class SyncHandler:
                     if event.is_state():
                         timeline_state[(event.type, event.state_key)] = event.event_id
 
-                if full_state:
-                    # always make sure we LL ourselves so we know we're in the room
-                    # (if we are) to fix https://github.com/vector-im/riot-web/issues/7209
-                    # We only need apply this on full state syncs given we disabled
-                    # LL for incr syncs in https://github.com/matrix-org/synapse/pull/3840.
-                    # We don't insert ourselves into `members_to_fetch`, because in some
-                    # rare cases (an empty event batch with a now_token after the user's
-                    # leave in a partial state room which another local user has
-                    # joined), the room state will be missing our membership and there
-                    # is no guarantee that our membership will be in the auth events of
-                    # timeline events when the room is partial stated.
-                    state_filter = StateFilter.from_lazy_load_member_list(
-                        members_to_fetch.union((sync_config.user.to_string(),))
-                    )
-                else:
-                    state_filter = StateFilter.from_lazy_load_member_list(
-                        members_to_fetch
-                    )
-
-                # We are happy to use partial state to compute the `/sync` response.
-                # Since partial state may not include the lazy-loaded memberships we
-                # require, we fix up the state response afterwards with memberships from
-                # auth events.
-                await_full_state = False
             else:
                 timeline_state = {
                     (event.type, event.state_key): event.event_id
@@ -1045,9 +1035,6 @@ class SyncHandler:
                     if event.is_state()
                 }
 
-                state_filter = StateFilter.all()
-                await_full_state = True
-
             # Now calculate the state to return in the sync response for the room.
             # This is more or less the change in state between the end of the previous
             # sync's timeline and the start of the current sync's timeline.
@@ -1057,132 +1044,29 @@ class SyncHandler:
             # whether the room is partial stated *before* fetching it.
             is_partial_state_room = await self.store.is_partial_state_room(room_id)
             if full_state:
-                if batch:
-                    state_at_timeline_end = (
-                        await self._state_storage_controller.get_state_ids_for_event(
-                            batch.events[-1].event_id,
-                            state_filter=state_filter,
-                            await_full_state=await_full_state,
-                        )
-                    )
-
-                    state_at_timeline_start = (
-                        await self._state_storage_controller.get_state_ids_for_event(
-                            batch.events[0].event_id,
-                            state_filter=state_filter,
-                            await_full_state=await_full_state,
-                        )
-                    )
-
-                else:
-                    state_at_timeline_end = await self.get_state_at(
-                        room_id,
-                        stream_position=now_token,
-                        state_filter=state_filter,
-                        await_full_state=await_full_state,
-                    )
-
-                    state_at_timeline_start = state_at_timeline_end
-
-                state_ids = _calculate_state(
-                    timeline_contains=timeline_state,
-                    timeline_start=state_at_timeline_start,
-                    timeline_end=state_at_timeline_end,
-                    previous_timeline_end={},
-                    lazy_load_members=lazy_load_members,
+                state_ids = await self._compute_state_delta_for_full_sync(
+                    room_id,
+                    sync_config.user,
+                    batch,
+                    end_token,
+                    members_to_fetch,
+                    timeline_state,
                 )
-            elif batch.limited:
-                if batch:
-                    state_at_timeline_start = (
-                        await self._state_storage_controller.get_state_ids_for_event(
-                            batch.events[0].event_id,
-                            state_filter=state_filter,
-                            await_full_state=await_full_state,
-                        )
-                    )
-                else:
-                    # We can get here if the user has ignored the senders of all
-                    # the recent events.
-                    state_at_timeline_start = await self.get_state_at(
-                        room_id,
-                        stream_position=now_token,
-                        state_filter=state_filter,
-                        await_full_state=await_full_state,
-                    )
-
-                # for now, we disable LL for gappy syncs - see
-                # https://github.com/vector-im/riot-web/issues/7211#issuecomment-419976346
-                # N.B. this slows down incr syncs as we are now processing way
-                # more state in the server than if we were LLing.
-                #
-                # We still have to filter timeline_start to LL entries (above) in order
-                # for _calculate_state's LL logic to work, as we have to include LL
-                # members for timeline senders in case they weren't loaded in the initial
-                # sync.  We do this by (counterintuitively) by filtering timeline_start
-                # members to just be ones which were timeline senders, which then ensures
-                # all of the rest get included in the state block (if we need to know
-                # about them).
-                state_filter = StateFilter.all()
-
+            else:
                 # If this is an initial sync then full_state should be set, and
                 # that case is handled above. We assert here to ensure that this
                 # is indeed the case.
                 assert since_token is not None
-                state_at_previous_sync = await self.get_state_at(
+
+                state_ids = await self._compute_state_delta_for_incremental_sync(
                     room_id,
-                    stream_position=since_token,
-                    state_filter=state_filter,
-                    await_full_state=await_full_state,
+                    batch,
+                    since_token,
+                    end_token,
+                    members_to_fetch,
+                    timeline_state,
                 )
 
-                if batch:
-                    state_at_timeline_end = (
-                        await self._state_storage_controller.get_state_ids_for_event(
-                            batch.events[-1].event_id,
-                            state_filter=state_filter,
-                            await_full_state=await_full_state,
-                        )
-                    )
-                else:
-                    # We can get here if the user has ignored the senders of all
-                    # the recent events.
-                    state_at_timeline_end = await self.get_state_at(
-                        room_id,
-                        stream_position=now_token,
-                        state_filter=state_filter,
-                        await_full_state=await_full_state,
-                    )
-
-                state_ids = _calculate_state(
-                    timeline_contains=timeline_state,
-                    timeline_start=state_at_timeline_start,
-                    timeline_end=state_at_timeline_end,
-                    previous_timeline_end=state_at_previous_sync,
-                    # we have to include LL members in case LL initial sync missed them
-                    lazy_load_members=lazy_load_members,
-                )
-            else:
-                state_ids = {}
-                if lazy_load_members:
-                    if members_to_fetch and batch.events:
-                        # We're returning an incremental sync, with no
-                        # "gap" since the previous sync, so normally there would be
-                        # no state to return.
-                        # But 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, and then dedupe any redundant ones below.
-
-                        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,
-                        )
-
             # If we only have partial state for the room, `state_ids` may be missing the
             # memberships we wanted. We attempt to find some by digging through the auth
             # events of timeline events.
@@ -1245,6 +1129,240 @@ class SyncHandler:
             if e.type != EventTypes.Aliases  # until MSC2261 or alternative solution
         }
 
+    async def _compute_state_delta_for_full_sync(
+        self,
+        room_id: str,
+        syncing_user: UserID,
+        batch: TimelineBatch,
+        end_token: StreamToken,
+        members_to_fetch: Optional[Set[str]],
+        timeline_state: StateMap[str],
+    ) -> StateMap[str]:
+        """Calculate the state events to be included in a full sync response.
+
+        As with `_compute_state_delta_for_incremental_sync`, the result will include
+        the membership events for the senders of each event in `members_to_fetch`.
+
+        Args:
+            room_id: The room we are calculating for.
+            syncing_user: The user that is calling `/sync`.
+            batch: The timeline batch for the room that will be sent to the user.
+            end_token: Token of the end of the current batch. Normally this will be
+                the same as the global "now_token", but if the user has left the room,
+                the point just after their leave event.
+            members_to_fetch: If lazy-loading is enabled, the memberships needed for
+                events in the timeline.
+            timeline_state: The contribution to the room state from state events in
+                `batch`. Only contains the last event for any given state key.
+
+        Returns:
+            A map from (type, state_key) to event_id, for each event that we believe
+            should be included in the `state` part of the sync response.
+        """
+        if members_to_fetch is not None:
+            # Lazy-loading of membership events is enabled.
+            #
+            # Always make sure we load our own membership event so we know if
+            # we're in the room, to fix https://github.com/vector-im/riot-web/issues/7209.
+            #
+            # We only need apply this on full state syncs given we disabled
+            # LL for incr syncs in https://github.com/matrix-org/synapse/pull/3840.
+            #
+            # We don't insert ourselves into `members_to_fetch`, because in some
+            # rare cases (an empty event batch with a now_token after the user's
+            # leave in a partial state room which another local user has
+            # joined), the room state will be missing our membership and there
+            # is no guarantee that our membership will be in the auth events of
+            # timeline events when the room is partial stated.
+            state_filter = StateFilter.from_lazy_load_member_list(
+                members_to_fetch.union((syncing_user.to_string(),))
+            )
+
+            # We are happy to use partial state to compute the `/sync` response.
+            # Since partial state may not include the lazy-loaded memberships we
+            # require, we fix up the state response afterwards with memberships from
+            # auth events.
+            await_full_state = False
+            lazy_load_members = True
+        else:
+            state_filter = StateFilter.all()
+            await_full_state = True
+            lazy_load_members = False
+
+        state_at_timeline_end = await self.get_state_at(
+            room_id,
+            stream_position=end_token,
+            state_filter=state_filter,
+            await_full_state=await_full_state,
+        )
+
+        if batch:
+            # Strictly speaking, this returns the state *after* the first event in the
+            # timeline, but that is good enough here.
+            state_at_timeline_start = (
+                await self._state_storage_controller.get_state_ids_for_event(
+                    batch.events[0].event_id,
+                    state_filter=state_filter,
+                    await_full_state=await_full_state,
+                )
+            )
+        else:
+            state_at_timeline_start = state_at_timeline_end
+
+        state_ids = _calculate_state(
+            timeline_contains=timeline_state,
+            timeline_start=state_at_timeline_start,
+            timeline_end=state_at_timeline_end,
+            previous_timeline_end={},
+            lazy_load_members=lazy_load_members,
+        )
+        return state_ids
+
+    async def _compute_state_delta_for_incremental_sync(
+        self,
+        room_id: str,
+        batch: TimelineBatch,
+        since_token: StreamToken,
+        end_token: StreamToken,
+        members_to_fetch: Optional[Set[str]],
+        timeline_state: StateMap[str],
+    ) -> StateMap[str]:
+        """Calculate the state events to be included in an incremental sync response.
+
+        If lazy-loading of membership events is enabled (as indicated by
+        `members_to_fetch` being not-`None`), the result will include the membership
+        events for each member in `members_to_fetch`. The caller
+        (`compute_state_delta`) is responsible for keeping track of which membership
+        events we have already sent to the client, and hence ripping them out.
+
+        Args:
+            room_id: The room we are calculating for.
+            batch: The timeline batch for the room that will be sent to the user.
+            since_token: Token of the end of the previous batch.
+            end_token: Token of the end of the current batch. Normally this will be
+                the same as the global "now_token", but if the user has left the room,
+                the point just after their leave event.
+            members_to_fetch: If lazy-loading is enabled, the memberships needed for
+                events in the timeline. Otherwise, `None`.
+            timeline_state: The contribution to the room state from state events in
+                `batch`. Only contains the last event for any given state key.
+
+        Returns:
+            A map from (type, state_key) to event_id, for each event that we believe
+            should be included in the `state` part of the sync response.
+        """
+        if members_to_fetch is not None:
+            # Lazy-loading is enabled. Only return the state that is needed.
+            state_filter = StateFilter.from_lazy_load_member_list(members_to_fetch)
+            await_full_state = False
+            lazy_load_members = True
+        else:
+            state_filter = StateFilter.all()
+            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(
+                    batch.events[0].event_id,
+                    state_filter=state_filter,
+                    await_full_state=await_full_state,
+                )
+            )
+        else:
+            # We can get here if the user has ignored the senders of all
+            # the recent events.
+            state_at_timeline_start = await self.get_state_at(
+                room_id,
+                stream_position=end_token,
+                state_filter=state_filter,
+                await_full_state=await_full_state,
+            )
+
+        if batch.limited:
+            # for now, we disable LL for gappy syncs - see
+            # https://github.com/vector-im/riot-web/issues/7211#issuecomment-419976346
+            # N.B. this slows down incr syncs as we are now processing way
+            # more state in the server than if we were LLing.
+            #
+            # We still have to filter timeline_start to LL entries (above) in order
+            # for _calculate_state's LL logic to work, as we have to include LL
+            # members for timeline senders in case they weren't loaded in the initial
+            # sync.  We do this by (counterintuitively) by filtering timeline_start
+            # members to just be ones which were timeline senders, which then ensures
+            # all of the rest get included in the state block (if we need to know
+            # about them).
+            state_filter = StateFilter.all()
+
+        state_at_previous_sync = await self.get_state_at(
+            room_id,
+            stream_position=since_token,
+            state_filter=state_filter,
+            await_full_state=await_full_state,
+        )
+
+        state_at_timeline_end = await self.get_state_at(
+            room_id,
+            stream_position=end_token,
+            state_filter=state_filter,
+            await_full_state=await_full_state,
+        )
+
+        state_ids = _calculate_state(
+            timeline_contains=timeline_state,
+            timeline_start=state_at_timeline_start,
+            timeline_end=state_at_timeline_end,
+            previous_timeline_end=state_at_previous_sync,
+            lazy_load_members=lazy_load_members,
+        )
+
+        return state_ids
+
     async def _find_missing_partial_state_memberships(
         self,
         room_id: str,
@@ -1333,9 +1451,9 @@ class SyncHandler:
                     and auth_event.state_key == member
                 ):
                     missing_members.discard(member)
-                    additional_state_ids[
-                        (EventTypes.Member, member)
-                    ] = auth_event.event_id
+                    additional_state_ids[(EventTypes.Member, member)] = (
+                        auth_event.event_id
+                    )
                     break
 
         if missing_members:
@@ -2243,6 +2361,7 @@ class SyncHandler:
                         full_state=False,
                         since_token=since_token,
                         upto_token=leave_token,
+                        end_token=leave_token,
                         out_of_band=leave_event.internal_metadata.is_out_of_band_membership(),
                     )
                 )
@@ -2280,6 +2399,7 @@ class SyncHandler:
                     full_state=False,
                     since_token=None if newly_joined else since_token,
                     upto_token=prev_batch_token,
+                    end_token=now_token,
                 )
             else:
                 entry = RoomSyncResultBuilder(
@@ -2290,6 +2410,7 @@ class SyncHandler:
                     full_state=False,
                     since_token=since_token,
                     upto_token=since_token,
+                    end_token=now_token,
                 )
 
             room_entries.append(entry)
@@ -2348,6 +2469,7 @@ class SyncHandler:
                         full_state=True,
                         since_token=since_token,
                         upto_token=now_token,
+                        end_token=now_token,
                     )
                 )
             elif event.membership == Membership.INVITE:
@@ -2377,6 +2499,7 @@ class SyncHandler:
                         full_state=True,
                         since_token=since_token,
                         upto_token=leave_token,
+                        end_token=leave_token,
                     )
                 )
 
@@ -2447,6 +2570,7 @@ class SyncHandler:
                 {
                     "since_token": since_token,
                     "upto_token": upto_token,
+                    "end_token": room_builder.end_token,
                 }
             )
 
@@ -2520,7 +2644,7 @@ class SyncHandler:
                     batch,
                     sync_config,
                     since_token,
-                    now_token,
+                    room_builder.end_token,
                     full_state=full_state,
                 )
             else:
@@ -2680,6 +2804,61 @@ def _calculate_state(
             e for t, e in timeline_start.items() if t[0] == EventTypes.Member
         )
 
+    # Naively, we would just return the difference between the state at the start
+    # of the timeline (`timeline_start_ids`) and that at the end of the previous sync
+    # (`previous_timeline_end_ids`). However, that fails in the presence of forks in
+    # the DAG.
+    #
+    # For example, consider a DAG such as the following:
+    #
+    #       E1
+    #     ↗    ↖
+    #    |      S2
+    #    |      ↑
+    #  --|------|----
+    #    |      |
+    #    E3     |
+    #     ↖    /
+    #       E4
+    #
+    # ... and a filter that means we only return 2 events, represented by the dashed
+    # horizontal line. Assuming S2 was *not* included in the previous sync, we need to
+    # include it in the `state` section.
+    #
+    # Note that the state at the start of the timeline (E3) does not include S2. So,
+    # to make sure it gets included in the calculation here, we actually look at
+    # the state at the *end* of the timeline, and subtract any events that are present
+    # in the timeline.
+    #
+    # ----------
+    #
+    # Aside 1: You may then wonder if we need to include `timeline_start` in the
+    # calculation. Consider a linear DAG:
+    #
+    #      E1
+    #      ↑
+    #      S2
+    #      ↑
+    #  ----|------
+    #      |
+    #      E3
+    #      ↑
+    #      S4
+    #      ↑
+    #      E5
+    #
+    # ... where S2 and S4 change the same piece of state; and where we have a filter
+    # that returns 3 events (E3, S4, E5). We still need to tell the client about S2,
+    # because it might affect the display of E3. However, the state at the end of the
+    # timeline only tells us about S4; if we don't inspect `timeline_start` we won't
+    # find out about S2.
+    #
+    # (There are yet more complicated cases in which a state event is excluded from the
+    # timeline, but whose effect actually lands in the DAG in the *middle* of the
+    # timeline. We have no way to represent that in the /sync response, and we don't
+    # even try; it is ether omitted or plonked into `state` as if it were at the start
+    # of the timeline, depending on what else is in the timeline.)
+
     state_ids = (
         (timeline_end_ids | timeline_start_ids)
         - previous_timeline_end_ids
@@ -2746,7 +2925,7 @@ class SyncResultBuilder:
         if self.since_token:
             for joined_sync in self.joined:
                 it = itertools.chain(
-                    joined_sync.timeline.events, joined_sync.state.values()
+                    joined_sync.state.values(), joined_sync.timeline.events
                 )
                 for event in it:
                     if event.type == EventTypes.Member:
@@ -2758,13 +2937,20 @@ class SyncResultBuilder:
                             newly_joined_or_invited_or_knocked_users.add(
                                 event.state_key
                             )
+                            # If the user left and rejoined in the same batch, they
+                            # count as a newly-joined user, *not* a newly-left user.
+                            newly_left_users.discard(event.state_key)
                         else:
                             prev_content = event.unsigned.get("prev_content", {})
                             prev_membership = prev_content.get("membership", None)
                             if prev_membership == Membership.JOIN:
                                 newly_left_users.add(event.state_key)
+                            # If the user joined and left in the same batch, they
+                            # count as a newly-left user, not a newly-joined user.
+                            newly_joined_or_invited_or_knocked_users.discard(
+                                event.state_key
+                            )
 
-        newly_left_users -= newly_joined_or_invited_or_knocked_users
         return newly_joined_or_invited_or_knocked_users, newly_left_users
 
 
@@ -2775,13 +2961,30 @@ class RoomSyncResultBuilder:
 
     Attributes:
         room_id
+
         rtype: One of `"joined"` or `"archived"`
+
         events: List of events to include in the room (more events may be added
             when generating result).
+
         newly_joined: If the user has newly joined the room
+
         full_state: Whether the full state should be sent in result
+
         since_token: Earliest point to return events from, or None
-        upto_token: Latest point to return events from.
+
+        upto_token: Latest point to return events from. If `events` is populated,
+           this is set to the token at the start of `events`
+
+        end_token: The last point in the timeline that the client should see events
+           from. Normally this will be the same as the global `now_token`, but in
+           the case of rooms where the user has left the room, this will be the point
+           just after their leave event.
+
+           This is used in the calculation of the state which is returned in `state`:
+           any state changes *up to* `end_token` (and not beyond!) which are not
+           reflected in the timeline need to be returned in `state`.
+
         out_of_band: whether the events in the room are "out of band" events
             and the server isn't in the room.
     """
@@ -2793,5 +2996,5 @@ class RoomSyncResultBuilder:
     full_state: bool
     since_token: Optional[StreamToken]
     upto_token: StreamToken
-
+    end_token: StreamToken
     out_of_band: bool = False