Add changelog

Co-authored-by: Andrew Morgan <1342360+anoadragon453@users.noreply.github.com>

.ci/scripts/test_synapse_port_db.sh

@@ -61,7 +61,7 @@ poetry run update_synapse_database --database-config .ci/postgres-config-unporte
 echo "+++ Comparing ported schema with unported schema"
 # Ignore the tables that portdb creates. (Should it tidy them up when the porting is completed?)
 psql synapse -c "DROP TABLE port_from_sqlite3;"
-pg_dump --format=plain --schema-only --no-tablespaces --no-acl --no-owner synapse_unported > unported.sql
-pg_dump --format=plain --schema-only --no-tablespaces --no-acl --no-owner synapse          >   ported.sql
+pg_dump --format=plain --schema-only --no-tablespaces --no-acl --no-owner --restrict-key=TESTING synapse_unported > unported.sql
+pg_dump --format=plain --schema-only --no-tablespaces --no-acl --no-owner --restrict-key=TESTING synapse          >   ported.sql
 # By default, `diff` returns zero if there are no changes and nonzero otherwise
-diff -u unported.sql ported.sql | tee schema_diff
+diff -u unported.sql ported.sql | tee schema_diff

.github/workflows/docker.yml

@@ -31,7 +31,7 @@ jobs:
         uses: docker/setup-buildx-action@e468171a9de216ec08956ac3ada2f0791b6bd435 # v3.11.1
 
       - name: Checkout repository
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Extract version from pyproject.toml
         # Note: explicitly requesting bash will mean bash is invoked with `-eo pipefail`, see
@@ -41,13 +41,13 @@ jobs:
           echo "SYNAPSE_VERSION=$(grep "^version" pyproject.toml | sed -E 's/version\s*=\s*["]([^"]*)["]/\1/')" >> $GITHUB_ENV
 
       - name: Log in to DockerHub
-        uses: docker/login-action@74a5d142397b4f367a81961eba4e8cd7edddf772 # v3.4.0
+        uses: docker/login-action@184bdaa0721073962dff0199f1fb9940f07167d1 # v3.5.0
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
       - name: Log in to GHCR
-        uses: docker/login-action@74a5d142397b4f367a81961eba4e8cd7edddf772 # v3.4.0
+        uses: docker/login-action@184bdaa0721073962dff0199f1fb9940f07167d1 # v3.5.0
         with:
           registry: ghcr.io
           username: ${{ github.repository_owner }}
@@ -95,21 +95,21 @@ jobs:
       - build
     steps:
       - name: Download digests
-        uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # v4.3.0
+        uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0 # v5.0.0
         with:
           path: ${{ runner.temp }}/digests
           pattern: digests-*
           merge-multiple: true
 
       - name: Log in to DockerHub
-        uses: docker/login-action@74a5d142397b4f367a81961eba4e8cd7edddf772 # v3.4.0
+        uses: docker/login-action@184bdaa0721073962dff0199f1fb9940f07167d1 # v3.5.0
         if: ${{ startsWith(matrix.repository, 'docker.io') }}
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
       - name: Log in to GHCR
-        uses: docker/login-action@74a5d142397b4f367a81961eba4e8cd7edddf772 # v3.4.0
+        uses: docker/login-action@184bdaa0721073962dff0199f1fb9940f07167d1 # v3.5.0
         if: ${{ startsWith(matrix.repository, 'ghcr.io') }}
         with:
           registry: ghcr.io
@@ -120,10 +120,10 @@ jobs:
         uses: docker/setup-buildx-action@e468171a9de216ec08956ac3ada2f0791b6bd435 # v3.11.1
 
       - name: Install Cosign
-        uses: sigstore/cosign-installer@d58896d6a1865668819e1d91763c7751a165e159 # v3.9.2
+        uses: sigstore/cosign-installer@d7543c93d881b35a8faa02e8e3605f69b7a1ce62 # v3.10.0
 
       - name: Calculate docker image tag
-        uses: docker/metadata-action@902fa8ec7d6ecbf8d84d538b9b233a880e428804 # v5.7.0
+        uses: docker/metadata-action@c1e51972afc2121e065aed6d45c65596fe445f3f # v5.8.0
         with:
           images: ${{ matrix.repository }}
           flavor: |

.github/workflows/docs-pr.yaml

@@ -13,7 +13,7 @@ jobs:
     name: GitHub Pages
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           # Fetch all history so that the schema_versions script works.
           fetch-depth: 0
@@ -24,7 +24,7 @@ jobs:
           mdbook-version: '0.4.17'
 
       - name: Setup python
-        uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+        uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: "3.x"
 
@@ -50,7 +50,7 @@ jobs:
     name: Check links in documentation
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Setup mdbook
         uses: peaceiris/actions-mdbook@ee69d230fe19748b7abf22df32acaa93833fad08 # v2.0.0

.github/workflows/docs.yaml

@@ -50,7 +50,7 @@ jobs:
     needs:
       - pre
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           # Fetch all history so that the schema_versions script works.
           fetch-depth: 0
@@ -64,7 +64,7 @@ jobs:
         run: echo 'window.SYNAPSE_VERSION = "${{ needs.pre.outputs.branch-version }}";' > ./docs/website_files/version.js
 
       - name: Setup python
-        uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+        uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: "3.x"
 

.github/workflows/fix_lint.yaml

@@ -18,10 +18,10 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Install Rust
-        uses: dtolnay/rust-toolchain@b3b07ba8b418998c39fb20f53e8b695cdcc8de1b # master
+        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
           toolchain: ${{ env.RUST_VERSION }}
           components: clippy, rustfmt

.github/workflows/latest_deps.yml

@@ -42,9 +42,9 @@ jobs:
     if: needs.check_repo.outputs.should_run_workflow == 'true'
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Install Rust
-        uses: dtolnay/rust-toolchain@b3b07ba8b418998c39fb20f53e8b695cdcc8de1b # master
+        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
           toolchain: ${{ env.RUST_VERSION }}
       - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
@@ -77,10 +77,10 @@ jobs:
             postgres-version: "14"
 
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Install Rust
-        uses: dtolnay/rust-toolchain@b3b07ba8b418998c39fb20f53e8b695cdcc8de1b # master
+        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
           toolchain: ${{ env.RUST_VERSION }}
       - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
@@ -93,7 +93,7 @@ jobs:
             -e POSTGRES_PASSWORD=postgres \
             -e POSTGRES_INITDB_ARGS="--lc-collate C --lc-ctype C --encoding UTF8" \
             postgres:${{ matrix.postgres-version }}
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: "3.x"
       - run: pip install .[all,test]
@@ -152,10 +152,10 @@ jobs:
       BLACKLIST: ${{ matrix.workers && 'synapse-blacklist-with-workers' }}
 
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Install Rust
-        uses: dtolnay/rust-toolchain@b3b07ba8b418998c39fb20f53e8b695cdcc8de1b # master
+        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
           toolchain: ${{ env.RUST_VERSION }}
       - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
@@ -202,14 +202,14 @@ jobs:
 
     steps:
       - name: Check out synapse codebase
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           path: synapse
 
       - name: Prepare Complement's Prerequisites
         run: synapse/.ci/scripts/setup_complement_prerequisites.sh
 
-      - uses: actions/setup-go@d35c59abb061a4a6fb18e82ac0862c26744d6ab5 # v5.5.0
+      - uses: actions/setup-go@44694675825211faa026b3c33043df3e48a5fa00 # v6.0.0
         with:
           cache-dependency-path: complement/go.sum
           go-version-file: complement/go.mod
@@ -234,7 +234,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - uses: JasonEtco/create-an-issue@1b14a70e4d8dc185e5cc76d3bec9eab20257b2c5 # v2.9.2
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/poetry_lockfile.yaml

@@ -16,8 +16,8 @@ jobs:
     name: "Check locked dependencies have sdists"
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: '3.x'
       - run: pip install tomli

.github/workflows/push_complement_image.yml

@@ -33,29 +33,29 @@ jobs:
       packages: write
     steps:
       - name: Checkout specific branch (debug build)
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         if: github.event_name == 'workflow_dispatch'
         with:
           ref: ${{ inputs.branch }}
       - name: Checkout clean copy of develop (scheduled build)
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         if: github.event_name == 'schedule'
         with:
           ref: develop
       - name: Checkout clean copy of master (on-push)
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         if: github.event_name == 'push'
         with:
           ref: master
       - name: Login to registry
-        uses: docker/login-action@74a5d142397b4f367a81961eba4e8cd7edddf772 # v3.4.0
+        uses: docker/login-action@184bdaa0721073962dff0199f1fb9940f07167d1 # v3.5.0
         with:
           registry: ghcr.io
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
       - name: Work out labels for complement image
         id: meta
-        uses: docker/metadata-action@902fa8ec7d6ecbf8d84d538b9b233a880e428804 # v5.7.0
+        uses: docker/metadata-action@c1e51972afc2121e065aed6d45c65596fe445f3f # v5.8.0
         with:
           images: ghcr.io/${{ github.repository }}/complement-synapse
           tags: |

.github/workflows/release-artifacts.yml

@@ -27,8 +27,8 @@ jobs:
     name: "Calculate list of debian distros"
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: "3.x"
       - id: set-distros
@@ -55,7 +55,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           path: src
 
@@ -66,7 +66,7 @@ jobs:
           install: true
 
       - name: Set up docker layer caching
-        uses: actions/cache@5a3ec84eff668545956fd18022155c47e93e2684 # v4.2.3
+        uses: actions/cache@0400d5f644dc74513175e3cd8d07132dd4860809 # v4.2.4
         with:
           path: /tmp/.buildx-cache
           key: ${{ runner.os }}-buildx-${{ github.sha }}
@@ -74,7 +74,7 @@ jobs:
             ${{ runner.os }}-buildx-
 
       - name: Set up python
-        uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+        uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: "3.x"
 
@@ -132,9 +132,9 @@ jobs:
             os: "ubuntu-24.04-arm"
 
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           # setup-python@v4 doesn't impose a default python version. Need to use 3.x
           # here, because `python` on osx points to Python 2.7.
@@ -165,8 +165,8 @@ jobs:
     if: ${{ !startsWith(github.ref, 'refs/pull/') }}
 
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: "3.10"
 
@@ -191,7 +191,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Download all workflow run artifacts
-        uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # v4.3.0
+        uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0 # v5.0.0
       - name: Build a tarball for the debs
         # We need to merge all the debs uploads into one folder, then compress
         # that.

.github/workflows/schema.yaml

@@ -14,8 +14,8 @@ jobs:
     name: Ensure Synapse config schema is valid
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: "3.x"
       - name: Install check-jsonschema
@@ -40,8 +40,8 @@ jobs:
     name: Ensure generated documentation is up-to-date
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: "3.x"
       - name: Install PyYAML

.github/workflows/tests.yml

@@ -86,9 +86,9 @@ jobs:
     if: ${{ needs.changes.outputs.linting == 'true' }}
 
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Install Rust
-        uses: dtolnay/rust-toolchain@b3b07ba8b418998c39fb20f53e8b695cdcc8de1b # master
+        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
           toolchain: ${{ env.RUST_VERSION }}
       - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
@@ -106,8 +106,8 @@ jobs:
     if: ${{ needs.changes.outputs.linting == 'true' }}
 
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: "3.x"
       - run: "pip install 'click==8.1.1' 'GitPython>=3.1.20'"
@@ -116,8 +116,8 @@ jobs:
   check-lockfile:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: "3.x"
       - run: .ci/scripts/check_lockfile.py
@@ -129,7 +129,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Setup Poetry
         uses: matrix-org/setup-python-poetry@5bbf6603c5c930615ec8a29f1b5d7d258d905aa4 # v2.0.0
@@ -151,10 +151,10 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Install Rust
-        uses: dtolnay/rust-toolchain@b3b07ba8b418998c39fb20f53e8b695cdcc8de1b # master
+        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
           toolchain: ${{ env.RUST_VERSION }}
       - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
@@ -174,7 +174,7 @@ jobs:
       # Cribbed from
       # https://github.com/AustinScola/mypy-cache-github-action/blob/85ea4f2972abed39b33bd02c36e341b28ca59213/src/restore.ts#L10-L17
       - name: Restore/persist mypy's cache
-        uses: actions/cache@5a3ec84eff668545956fd18022155c47e93e2684 # v4.2.3
+        uses: actions/cache@0400d5f644dc74513175e3cd8d07132dd4860809 # v4.2.4
         with:
           path: |
             .mypy_cache
@@ -187,7 +187,7 @@ jobs:
   lint-crlf:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Check line endings
         run: scripts-dev/check_line_terminators.sh
 
@@ -195,11 +195,11 @@ jobs:
     if: ${{ (github.base_ref == 'develop'  || contains(github.base_ref, 'release-')) && github.actor != 'dependabot[bot]' }}
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           ref: ${{ github.event.pull_request.head.sha }}
           fetch-depth: 0
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: "3.x"
       - run: "pip install 'towncrier>=18.6.0rc1'"
@@ -213,11 +213,11 @@ jobs:
     if: ${{ needs.changes.outputs.linting == 'true' }}
 
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           ref: ${{ github.event.pull_request.head.sha }}
       - name: Install Rust
-        uses: dtolnay/rust-toolchain@b3b07ba8b418998c39fb20f53e8b695cdcc8de1b # master
+        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
           toolchain: ${{ env.RUST_VERSION }}
       - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
@@ -233,10 +233,10 @@ jobs:
     if: ${{ needs.changes.outputs.rust == 'true' }}
 
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Install Rust
-        uses: dtolnay/rust-toolchain@b3b07ba8b418998c39fb20f53e8b695cdcc8de1b # master
+        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
             components: clippy
             toolchain: ${{ env.RUST_VERSION }}
@@ -252,10 +252,10 @@ jobs:
     if: ${{ needs.changes.outputs.rust == 'true' }}
 
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Install Rust
-        uses: dtolnay/rust-toolchain@b3b07ba8b418998c39fb20f53e8b695cdcc8de1b # master
+        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
             toolchain: nightly-2025-04-23
             components: clippy
@@ -270,10 +270,10 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Install Rust
-        uses: dtolnay/rust-toolchain@b3b07ba8b418998c39fb20f53e8b695cdcc8de1b # master
+        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
           toolchain: ${{ env.RUST_VERSION }}
       - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
@@ -306,10 +306,10 @@ jobs:
     if: ${{ needs.changes.outputs.rust == 'true' }}
 
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Install Rust
-        uses: dtolnay/rust-toolchain@b3b07ba8b418998c39fb20f53e8b695cdcc8de1b # master
+        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
           # We use nightly so that we can use some unstable options that we use in
           # `.rustfmt.toml`.
@@ -326,8 +326,8 @@ jobs:
     needs: changes
     if: ${{ needs.changes.outputs.linting_readme == 'true' }}
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: "3.x"
       - run: "pip install rstcheck"
@@ -376,8 +376,8 @@ jobs:
     needs: linting-done
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: "3.x"
       - id: get-matrix
@@ -397,7 +397,7 @@ jobs:
         job:  ${{ fromJson(needs.calculate-test-jobs.outputs.trial_test_matrix) }}
 
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - run: sudo apt-get -qq install xmlsec1
       - name: Set up PostgreSQL ${{ matrix.job.postgres-version }}
         if: ${{ matrix.job.postgres-version }}
@@ -412,7 +412,7 @@ jobs:
             postgres:${{ matrix.job.postgres-version }}
 
       - name: Install Rust
-        uses: dtolnay/rust-toolchain@b3b07ba8b418998c39fb20f53e8b695cdcc8de1b # master
+        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
           toolchain: ${{ env.RUST_VERSION }}
       - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
@@ -453,10 +453,10 @@ jobs:
       - changes
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Install Rust
-        uses: dtolnay/rust-toolchain@b3b07ba8b418998c39fb20f53e8b695cdcc8de1b # master
+        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
           toolchain: ${{ env.RUST_VERSION }}
       - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
@@ -468,7 +468,7 @@ jobs:
           sudo apt-get -qq install build-essential libffi-dev python3-dev \
             libxml2-dev libxslt-dev xmlsec1 zlib1g-dev libjpeg-dev libwebp-dev
 
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: '3.9'
 
@@ -518,7 +518,7 @@ jobs:
         extras: ["all"]
 
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       # Install libs necessary for PyPy to build binary wheels for dependencies
       - run: sudo apt-get -qq install xmlsec1 libxml2-dev libxslt-dev
       - uses: matrix-org/setup-python-poetry@5bbf6603c5c930615ec8a29f1b5d7d258d905aa4 # v2.0.0
@@ -568,12 +568,12 @@ jobs:
         job: ${{ fromJson(needs.calculate-test-jobs.outputs.sytest_test_matrix) }}
 
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Prepare test blacklist
         run: cat sytest-blacklist .ci/worker-blacklist > synapse-blacklist-with-workers
 
       - name: Install Rust
-        uses: dtolnay/rust-toolchain@b3b07ba8b418998c39fb20f53e8b695cdcc8de1b # master
+        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
           toolchain: ${{ env.RUST_VERSION }}
       - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
@@ -615,7 +615,7 @@ jobs:
           --health-retries 5
 
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - run: sudo apt-get -qq install xmlsec1 postgresql-client
       - uses: matrix-org/setup-python-poetry@5bbf6603c5c930615ec8a29f1b5d7d258d905aa4 # v2.0.0
         with:
@@ -659,7 +659,7 @@ jobs:
           --health-retries 5
 
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Add PostgreSQL apt repository
         # We need a version of pg_dump that can handle the version of
         # PostgreSQL being tested against. The Ubuntu package repository lags
@@ -714,12 +714,12 @@ jobs:
 
     steps:
       - name: Checkout synapse codebase
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           path: synapse
 
       - name: Install Rust
-        uses: dtolnay/rust-toolchain@b3b07ba8b418998c39fb20f53e8b695cdcc8de1b # master
+        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
           toolchain: ${{ env.RUST_VERSION }}
       - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
@@ -727,7 +727,7 @@ jobs:
       - name: Prepare Complement's Prerequisites
         run: synapse/.ci/scripts/setup_complement_prerequisites.sh
 
-      - uses: actions/setup-go@d35c59abb061a4a6fb18e82ac0862c26744d6ab5 # v5.5.0
+      - uses: actions/setup-go@44694675825211faa026b3c33043df3e48a5fa00 # v6.0.0
         with:
           cache-dependency-path: complement/go.sum
           go-version-file: complement/go.mod
@@ -750,10 +750,10 @@ jobs:
       - changes
 
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Install Rust
-        uses: dtolnay/rust-toolchain@b3b07ba8b418998c39fb20f53e8b695cdcc8de1b # master
+        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
           toolchain: ${{ env.RUST_VERSION }}
       - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
@@ -770,10 +770,10 @@ jobs:
       - changes
 
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Install Rust
-        uses: dtolnay/rust-toolchain@b3b07ba8b418998c39fb20f53e8b695cdcc8de1b # master
+        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
             toolchain: nightly-2022-12-01
       - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0

.github/workflows/triage_labelled.yml

@@ -11,11 +11,15 @@ jobs:
     if: >
       contains(github.event.issue.labels.*.name, 'X-Needs-Info')
     steps:
-      - uses: actions/add-to-project@5b1a254a3546aef88e0a7724a77a623fa2e47c36 # main (v1.0.2 + 10 commits)
+      - uses: actions/add-to-project@4515659e2b458b27365e167605ac44f219494b66 # v1.0.2
         id: add_project
         with:
           project-url: "https://github.com/orgs/matrix-org/projects/67"
           github-token: ${{ secrets.ELEMENT_BOT_TOKEN }}
+        # This action will error if the issue already exists on the project. Which is
+        # common as `X-Needs-Info` will often be added to issues that are already in
+        # the triage queue. Prevent the whole job from failing in this case.
+        continue-on-error: true
       - name: Set status
         env:
           GITHUB_TOKEN: ${{ secrets.ELEMENT_BOT_TOKEN }}

.github/workflows/twisted_trunk.yml

@@ -43,10 +43,10 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Install Rust
-        uses: dtolnay/rust-toolchain@b3b07ba8b418998c39fb20f53e8b695cdcc8de1b # master
+        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
           toolchain: ${{ env.RUST_VERSION }}
       - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
@@ -70,11 +70,11 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - run: sudo apt-get -qq install xmlsec1
 
       - name: Install Rust
-        uses: dtolnay/rust-toolchain@b3b07ba8b418998c39fb20f53e8b695cdcc8de1b # master
+        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
           toolchain: ${{ env.RUST_VERSION }}
       - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
@@ -117,10 +117,10 @@ jobs:
         - ${{ github.workspace }}:/src
 
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Install Rust
-        uses: dtolnay/rust-toolchain@b3b07ba8b418998c39fb20f53e8b695cdcc8de1b # master
+        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
           toolchain: ${{ env.RUST_VERSION }}
       - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
@@ -175,14 +175,14 @@ jobs:
 
     steps:
       - name: Run actions/checkout@v4 for synapse
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           path: synapse
 
       - name: Prepare Complement's Prerequisites
         run: synapse/.ci/scripts/setup_complement_prerequisites.sh
 
-      - uses: actions/setup-go@d35c59abb061a4a6fb18e82ac0862c26744d6ab5 # v5.5.0
+      - uses: actions/setup-go@44694675825211faa026b3c33043df3e48a5fa00 # v6.0.0
         with:
           cache-dependency-path: complement/go.sum
           go-version-file: complement/go.mod
@@ -217,7 +217,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - uses: JasonEtco/create-an-issue@1b14a70e4d8dc185e5cc76d3bec9eab20257b2c5 # v2.9.2
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

CHANGES.md

@@ -1,12 +1,115 @@
-# Synapse 1.135.1 (2025-08-11)
+# Synapse 1.138.0 (2025-09-09)
+
+No significant changes since 1.138.0rc1.
+
+
+
+
+# Synapse 1.138.0rc1 (2025-09-02)
+
+### Features
+
+- Support for the stable endpoint and scopes of [MSC3861](https://github.com/matrix-org/matrix-spec-proposals/pull/3861) & co. ([\#18549](https://github.com/element-hq/synapse/issues/18549))
+
+### Bugfixes
+
+- Improve database performance of [MSC4293](https://github.com/matrix-org/matrix-spec-proposals/pull/4293) - Redact on Kick/Ban. ([\#18851](https://github.com/element-hq/synapse/issues/18851))
+- Do not throw an error when fetching a rejected delayed state event on startup. ([\#18858](https://github.com/element-hq/synapse/issues/18858))
+
+### Improved Documentation
+
+- Fix worker documentation incorrectly indicating all room Admin API requests were capable of being handled by workers. ([\#18853](https://github.com/element-hq/synapse/issues/18853))
+
+### Internal Changes
+
+- Instrument `_ByteProducer` with tracing to measure potential dead time while writing bytes to the request. ([\#18804](https://github.com/element-hq/synapse/issues/18804))
+- Switch to OpenTracing's `ContextVarsScopeManager` instead of our own custom `LogContextScopeManager`. ([\#18849](https://github.com/element-hq/synapse/issues/18849))
+- Trace how much work is being done while "recursively fetching redactions". ([\#18854](https://github.com/element-hq/synapse/issues/18854))
+- Link [upstream Twisted bug](https://github.com/twisted/twisted/issues/12498) tracking the problem that explains why we have to use a `Producer` to write bytes to the request. ([\#18855](https://github.com/element-hq/synapse/issues/18855))
+- Introduce `EventPersistencePair` type. ([\#18857](https://github.com/element-hq/synapse/issues/18857))
+
+
+
+### Updates to locked dependencies
+
+* Bump actions/add-to-project from c0c5949b017d0d4a39f7ba888255881bdac2a823 to 4515659e2b458b27365e167605ac44f219494b66. ([\#18863](https://github.com/element-hq/synapse/issues/18863))
+* Bump actions/checkout from 4.3.0 to 5.0.0. ([\#18834](https://github.com/element-hq/synapse/issues/18834))
+* Bump anyhow from 1.0.98 to 1.0.99. ([\#18841](https://github.com/element-hq/synapse/issues/18841))
+* Bump docker/login-action from 3.4.0 to 3.5.0. ([\#18835](https://github.com/element-hq/synapse/issues/18835))
+* Bump dtolnay/rust-toolchain from b3b07ba8b418998c39fb20f53e8b695cdcc8de1b to e97e2d8cc328f1b50210efc529dca0028893a2d9. ([\#18862](https://github.com/element-hq/synapse/issues/18862))
+* Bump phonenumbers from 9.0.11 to 9.0.12. ([\#18837](https://github.com/element-hq/synapse/issues/18837))
+* Bump regex from 1.11.1 to 1.11.2. ([\#18864](https://github.com/element-hq/synapse/issues/18864))
+* Bump reqwest from 0.12.22 to 0.12.23. ([\#18842](https://github.com/element-hq/synapse/issues/18842))
+* Bump ruff from 0.12.7 to 0.12.10. ([\#18865](https://github.com/element-hq/synapse/issues/18865))
+* Bump serde_json from 1.0.142 to 1.0.143. ([\#18866](https://github.com/element-hq/synapse/issues/18866))
+* Bump types-bleach from 6.2.0.20250514 to 6.2.0.20250809. ([\#18838](https://github.com/element-hq/synapse/issues/18838))
+* Bump types-jsonschema from 4.25.0.20250720 to 4.25.1.20250822. ([\#18867](https://github.com/element-hq/synapse/issues/18867))
+* Bump types-psycopg2 from 2.9.21.20250718 to 2.9.21.20250809. ([\#18836](https://github.com/element-hq/synapse/issues/18836))
+
+# Synapse 1.137.0 (2025-08-26)
+
+No significant changes since 1.137.0rc1.
+
+
+
+
+# Synapse 1.137.0rc1 (2025-08-19)
+
+### Bugfixes
+
+- Fix a bug which could corrupt auth chains making it impossible to perform state resolution. ([\#18746](https://github.com/element-hq/synapse/issues/18746))
+- Fix error message in `register_new_matrix_user` utility script for empty `registration_shared_secret`. ([\#18780](https://github.com/element-hq/synapse/issues/18780))
+- Allow enabling [MSC4108](https://github.com/matrix-org/matrix-spec-proposals/pull/4108) when the stable Matrix Authentication Service integration is enabled. ([\#18832](https://github.com/element-hq/synapse/issues/18832))
+
+### Improved Documentation
+
+- Include IPv6 networks in `denied-peer-ips` of coturn setup. Contributed by @litetex. ([\#18781](https://github.com/element-hq/synapse/issues/18781))
+
+### Internal Changes
+
+- Update tests to ensure all database tables are emptied when purging a room. ([\#18794](https://github.com/element-hq/synapse/issues/18794))
+- Instrument the `encode_response` part of Sliding Sync requests for more complete traces in Jaeger. ([\#18815](https://github.com/element-hq/synapse/issues/18815))
+- Tag Sliding Sync traces when we `wait_for_events`. ([\#18816](https://github.com/element-hq/synapse/issues/18816))
+- Fix `portdb` CI by hardcoding the new `pg_dump` restrict key that was added due to [CVE-2025-8714](https://nvd.nist.gov/vuln/detail/cve-2025-8714). ([\#18824](https://github.com/element-hq/synapse/issues/18824))
+
+
+
+### Updates to locked dependencies
+
+* Bump actions/add-to-project from 5b1a254a3546aef88e0a7724a77a623fa2e47c36 to 0c37450c4be3b6a7582b2fb013c9ebfd9c8e9300. ([\#18557](https://github.com/element-hq/synapse/issues/18557))
+* Bump actions/cache from 4.2.3 to 4.2.4. ([\#18799](https://github.com/element-hq/synapse/issues/18799))
+* Bump actions/checkout from 4.2.2 to 4.3.0. ([\#18800](https://github.com/element-hq/synapse/issues/18800))
+* Bump actions/download-artifact from 4.3.0 to 5.0.0. ([\#18801](https://github.com/element-hq/synapse/issues/18801))
+* Bump docker/metadata-action from 5.7.0 to 5.8.0. ([\#18773](https://github.com/element-hq/synapse/issues/18773))
+* Bump mypy from 1.16.1 to 1.17.1. ([\#18775](https://github.com/element-hq/synapse/issues/18775))
+* Bump phonenumbers from 9.0.10 to 9.0.11. ([\#18797](https://github.com/element-hq/synapse/issues/18797))
+* Bump pygithub from 2.6.1 to 2.7.0. ([\#18779](https://github.com/element-hq/synapse/issues/18779))
+* Bump serde_json from 1.0.141 to 1.0.142. ([\#18776](https://github.com/element-hq/synapse/issues/18776))
+* Bump slab from 0.4.10 to 0.4.11. ([\#18809](https://github.com/element-hq/synapse/issues/18809))
+* Bump tokio from 1.47.0 to 1.47.1. ([\#18774](https://github.com/element-hq/synapse/issues/18774))
+* Bump types-pyyaml from 6.0.12.20250516 to 6.0.12.20250809. ([\#18798](https://github.com/element-hq/synapse/issues/18798))
+* Bump types-setuptools from 80.9.0.20250529 to 80.9.0.20250809. ([\#18796](https://github.com/element-hq/synapse/issues/18796))
+
+# Synapse 1.136.0 (2025-08-12)
+
+Note: This release includes the security fixes from `1.135.2` and `1.136.0rc2`, detailed below.
+
+### Bugfixes
+
+- Fix bug introduced in 1.135.2 and 1.136.0rc2 where the [Make Room Admin API](https://element-hq.github.io/synapse/latest/admin_api/rooms.html#make-room-admin-api) would not treat a room v12's creator power level as the highest in room. ([\#18805](https://github.com/element-hq/synapse/issues/18805))
+
+
+# Synapse 1.135.2 (2025-08-11)
 
 This is the Synapse portion of the [Matrix coordinated security release](https://matrix.org/blog/2025/07/security-predisclosure/). This release includes support for [room version](https://spec.matrix.org/v1.15/rooms/) 12 which fixes a number of security vulnerabilities, including [CVE-2025-49090](https://www.cve.org/CVERecord?id=CVE-2025-49090).
 
 The default room version is not changed. Not all clients will support room version 12 immediately, and not all users will be using the latest version of their clients. Large, public rooms are advised to wait a few weeks before upgrading to room version 12 to allow users throughout the Matrix ecosystem to update their clients.
 
+Note: release 1.135.1 was skipped due to issues discovered during the release process.
+
 Two patched Synapse releases are now available:
 
-* `1.135.1`: stable release comprised of `1.135.0` + security patches
+* `1.135.2`: stable release comprised of `1.135.0` + security patches
     * Upgrade to this release **if you are currently running 1.135.0 or below**.
 * `1.136.0rc2`: unstable release candidate comprised of `1.136.0rc1` + security patches.
     * Upgrade to this release **only if you are on 1.136.0rc1**.
@@ -21,7 +124,77 @@ Two patched Synapse releases are now available:
 - Speed up upgrading a room with large numbers of banned users. ([\#18574](https://github.com/element-hq/synapse/issues/18574))
 
 
+# Synapse 1.136.0rc2 (2025-08-11)
 
+- Update MSC4293 redaction logic for room v12. ([\#80](https://github.com/element-hq/synapse/issues/80))
+
+### Internal Changes
+
+- Add a parameter to `upgrade_rooms(..)` to allow auto join local users. ([\#83](https://github.com/element-hq/synapse/issues/83))
+
+
+# Synapse 1.136.0rc1 (2025-08-05)
+
+Please check [the relevant section in the upgrade notes](https://github.com/element-hq/synapse/blob/develop/docs/upgrade.md#upgrading-to-v11360) as this release contains changes to MAS support, metrics labels and the module API which may require your attention when upgrading.
+
+### Features
+
+- Add configurable rate limiting for the creation of rooms. ([\#18514](https://github.com/element-hq/synapse/issues/18514))
+- Add support for [MSC4293](https://github.com/matrix-org/matrix-spec-proposals/pull/4293) - Redact on Kick/Ban. ([\#18540](https://github.com/element-hq/synapse/issues/18540))
+- When admins enable themselves to see soft-failed events, they will also see if the cause is due to the policy server flagging them as spam via `unsigned`. ([\#18585](https://github.com/element-hq/synapse/issues/18585))
+- Add ability to configure forward/outbound proxy via homeserver config instead of environment variables. See `http_proxy`, `https_proxy`, `no_proxy_hosts`. ([\#18686](https://github.com/element-hq/synapse/issues/18686))
+- Advertise experimental support for [MSC4306](https://github.com/matrix-org/matrix-spec-proposals/pull/4306) (Thread Subscriptions) through `/_matrix/clients/versions` if enabled. ([\#18722](https://github.com/element-hq/synapse/issues/18722))
+- Stabilise support for delegating authentication to [Matrix Authentication Service](https://github.com/element-hq/matrix-authentication-service/). ([\#18759](https://github.com/element-hq/synapse/issues/18759))
+- Implement the push rules for experimental [MSC4306: Thread Subscriptions](https://github.com/matrix-org/matrix-doc/issues/4306). ([\#18762](https://github.com/element-hq/synapse/issues/18762))
+
+### Bugfixes
+
+- Allow return code 403 (allowed by C2S Spec since v1.2) when fetching profiles via federation. ([\#18696](https://github.com/element-hq/synapse/issues/18696))
+- Register the MSC4306 (Thread Subscriptions) endpoints in the CS API when the experimental feature is enabled. ([\#18726](https://github.com/element-hq/synapse/issues/18726))
+- Fix a long-standing bug where suspended users could not have server notices sent to them (a 403 was returned to the admin). ([\#18750](https://github.com/element-hq/synapse/issues/18750))
+- Fix an issue that could cause logcontexts to be lost on rate-limited requests. Found by @realtyem. ([\#18763](https://github.com/element-hq/synapse/issues/18763))
+- Fix invalidation of storage cache that was broken in 1.135.0. ([\#18786](https://github.com/element-hq/synapse/issues/18786))
+
+### Improved Documentation
+
+- Minor improvements to README. ([\#18700](https://github.com/element-hq/synapse/issues/18700))
+- Document that there can be multiple workers handling the `receipts` stream. ([\#18760](https://github.com/element-hq/synapse/issues/18760))
+- Improve worker documentation for some device paths. ([\#18761](https://github.com/element-hq/synapse/issues/18761))
+
+### Deprecations and Removals
+
+- Deprecate `run_as_background_process` exported as part of the module API interface in favor of `ModuleApi.run_as_background_process`. See [the relevant section in the upgrade notes](https://github.com/element-hq/synapse/blob/develop/docs/upgrade.md#upgrading-to-v11360) for more information. ([\#18737](https://github.com/element-hq/synapse/issues/18737))
+
+### Internal Changes
+
+- Add debug logging for HMAC digest verification failures when using the admin API to register users. ([\#18474](https://github.com/element-hq/synapse/issues/18474))
+- Speed up upgrading a room with large numbers of banned users. ([\#18574](https://github.com/element-hq/synapse/issues/18574))
+- Fix config documentation generation script on Windows by enforcing UTF-8. ([\#18580](https://github.com/element-hq/synapse/issues/18580))
+- Refactor cache, background process, `Counter`, `LaterGauge`, `GaugeBucketCollector`, `Histogram`, and `Gauge` metrics to be homeserver-scoped. ([\#18656](https://github.com/element-hq/synapse/issues/18656), [\#18714](https://github.com/element-hq/synapse/issues/18714), [\#18715](https://github.com/element-hq/synapse/issues/18715), [\#18724](https://github.com/element-hq/synapse/issues/18724), [\#18753](https://github.com/element-hq/synapse/issues/18753), [\#18725](https://github.com/element-hq/synapse/issues/18725), [\#18670](https://github.com/element-hq/synapse/issues/18670), [\#18748](https://github.com/element-hq/synapse/issues/18748), [\#18751](https://github.com/element-hq/synapse/issues/18751))
+- Reduce database usage in Sliding Sync by not querying for background update completion after the update is known to be complete. ([\#18718](https://github.com/element-hq/synapse/issues/18718))
+- Improve order of validation and ratelimiting in room creation. ([\#18723](https://github.com/element-hq/synapse/issues/18723))
+- Bump minimum version bound on Twisted to 21.2.0. ([\#18727](https://github.com/element-hq/synapse/issues/18727), [\#18729](https://github.com/element-hq/synapse/issues/18729))
+- Use `twisted.internet.testing` module in tests instead of deprecated `twisted.test.proto_helpers`. ([\#18728](https://github.com/element-hq/synapse/issues/18728))
+- Remove obsolete `/send_event` replication endpoint. ([\#18730](https://github.com/element-hq/synapse/issues/18730))
+- Update metrics linting to be able to handle custom metrics. ([\#18733](https://github.com/element-hq/synapse/issues/18733))
+- Work around `twisted.protocols.amp.TooLong` error by reducing logging in some tests. ([\#18736](https://github.com/element-hq/synapse/issues/18736))
+- Prevent "Move labelled issues to correct projects" GitHub Actions workflow from failing when an issue is already on the project board. ([\#18755](https://github.com/element-hq/synapse/issues/18755))
+- Bump minimum supported Rust version (MSRV) to 1.82.0. Missed in [#18553](https://github.com/element-hq/synapse/pull/18553) (released in Synapse 1.134.0). ([\#18757](https://github.com/element-hq/synapse/issues/18757))
+- Make `Clock.sleep(...)` return a coroutine, so that mypy can catch places where we don't await on it. ([\#18772](https://github.com/element-hq/synapse/issues/18772))
+- Update implementation of [MSC4306: Thread Subscriptions](https://github.com/matrix-org/matrix-doc/issues/4306) to include automatic subscription conflict prevention as introduced in later drafts. ([\#18756](https://github.com/element-hq/synapse/issues/18756))
+
+
+
+### Updates to locked dependencies
+
+* Bump gitpython from 3.1.44 to 3.1.45. ([\#18743](https://github.com/element-hq/synapse/issues/18743))
+* Bump mypy-zope from 1.0.12 to 1.0.13. ([\#18744](https://github.com/element-hq/synapse/issues/18744))
+* Bump phonenumbers from 9.0.9 to 9.0.10. ([\#18741](https://github.com/element-hq/synapse/issues/18741))
+* Bump ruff from 0.12.4 to 0.12.5. ([\#18742](https://github.com/element-hq/synapse/issues/18742))
+* Bump sentry-sdk from 2.32.0 to 2.33.2. ([\#18745](https://github.com/element-hq/synapse/issues/18745))
+* Bump tokio from 1.46.1 to 1.47.0. ([\#18740](https://github.com/element-hq/synapse/issues/18740))
+* Bump types-jsonschema from 4.24.0.20250708 to 4.25.0.20250720. ([\#18703](https://github.com/element-hq/synapse/issues/18703))
+* Bump types-psycopg2 from 2.9.21.20250516 to 2.9.21.20250718. ([\#18706](https://github.com/element-hq/synapse/issues/18706))
 
 # Synapse 1.135.0 (2025-08-01)
 

README.rst

@@ -8,7 +8,7 @@
 Synapse is an open source `Matrix <https://matrix.org>`__ homeserver
 implementation, written and maintained by `Element <https://element.io>`_.
 `Matrix <https://github.com/matrix-org>`__ is the open standard for
-secure and interoperable real time communications. You can directly run
+secure and interoperable real-time communications. You can directly run
 and manage the source code in this repository, available under an AGPL
 license (or alternatively under a commercial license from Element).
 There is no support provided by Element unless you have a
@@ -23,13 +23,13 @@ ESS builds on Synapse to offer a complete Matrix-based backend including the ful
 `Admin Console product <https://element.io/enterprise-functionality/admin-console>`_,
 giving admins the power to easily manage an organization-wide
 deployment. It includes advanced identity management, auditing,
-moderation and data retention options as well as Long Term Support and
-SLAs. ESS can be used to support any Matrix-based frontend client.
+moderation and data retention options as well as Long-Term Support and
+SLAs. ESS supports any Matrix-compatible client.
 
 .. contents::
 
-🛠️ Installing and configuration
-===============================
+🛠️ Installation and configuration
+==================================
 
 The Synapse documentation describes `how to install Synapse <https://element-hq.github.io/synapse/latest/setup/installation.html>`_. We recommend using
 `Docker images <https://element-hq.github.io/synapse/latest/setup/installation.html#docker-images-and-ansible-playbooks>`_ or `Debian packages from Matrix.org
@@ -133,7 +133,7 @@ connect from a client: see
 An easy way to get started is to login or register via Element at
 https://app.element.io/#/login or https://app.element.io/#/register respectively.
 You will need to change the server you are logging into from ``matrix.org``
-and instead specify a Homeserver URL of ``https://<server_name>:8448``
+and instead specify a homeserver URL of ``https://<server_name>:8448``
 (or just ``https://<server_name>`` if you are using a reverse proxy).
 If you prefer to use another client, refer to our
 `client breakdown <https://matrix.org/ecosystem/clients/>`_.
@@ -162,16 +162,15 @@ the public internet. Without it, anyone can freely register accounts on your hom
 This can be exploited by attackers to create spambots targeting the rest of the Matrix
 federation.
 
-Your new user name will be formed partly from the ``server_name``, and partly
-from a localpart you specify when you create the account. Your name will take
-the form of::
+Your new Matrix ID will be formed partly from the ``server_name``, and partly
+from a localpart you specify when you create the account in the form of::
 
     @localpart:my.domain.name
 
 (pronounced "at localpart on my dot domain dot name").
 
 As when logging in, you will need to specify a "Custom server".  Specify your
-desired ``localpart`` in the 'User name' box.
+desired ``localpart`` in the 'Username' box.
 
 🎯 Troubleshooting and support
 ==============================
@@ -209,10 +208,10 @@ Identity servers have the job of mapping email addresses and other 3rd Party
 IDs (3PIDs) to Matrix user IDs, as well as verifying the ownership of 3PIDs
 before creating that mapping.
 
-**They are not where accounts or credentials are stored - these live on home
-servers. Identity Servers are just for mapping 3rd party IDs to matrix IDs.**
+**Identity servers do not store accounts or credentials - these are stored and managed on homeservers.
+Identity Servers are just for mapping 3rd Party IDs to Matrix IDs.**
 
-This process is very security-sensitive, as there is obvious risk of spam if it
+This process is highly security-sensitive, as there is an obvious risk of spam if it
 is too easy to sign up for Matrix accounts or harvest 3PID data. In the longer
 term, we hope to create a decentralised system to manage it (`matrix-doc #712
 <https://github.com/matrix-org/matrix-doc/issues/712>`_), but in the meantime,
@@ -238,9 +237,9 @@ email address.
 We welcome contributions to Synapse from the community!
 The best place to get started is our
 `guide for contributors <https://element-hq.github.io/synapse/latest/development/contributing_guide.html>`_.
-This is part of our larger `documentation <https://element-hq.github.io/synapse/latest>`_, which includes
-
+This is part of our broader `documentation <https://element-hq.github.io/synapse/latest>`_, which includes
 information for Synapse developers as well as Synapse administrators.
+
 Developers might be particularly interested in:
 
 * `Synapse's database schema <https://element-hq.github.io/synapse/latest/development/database_schema.html>`_,

build_rust.py

@@ -19,17 +19,17 @@ def build(setup_kwargs: Dict[str, Any]) -> None:
         # This flag is a no-op in the latest versions. Instead, we need to
         # specify this in the `bdist_wheel` config below.
         py_limited_api=True,
-        # We force always building in release mode, as we can't tell the
-        # difference between using `poetry` in development vs production.
+        # We always build in release mode, as we can't distinguish
+        # between using `poetry` in development vs production.
         debug=False,
     )
     setup_kwargs.setdefault("rust_extensions", []).append(extension)
     setup_kwargs["zip_safe"] = False
 
-    # We lookup the minimum supported python version by looking at
-    # `python_requires` (e.g. ">=3.9.0,<4.0.0") and finding the first python
+    # We look up the minimum supported Python version with
+    # `python_requires` (e.g. ">=3.9.0,<4.0.0") and finding the first Python
     # version that matches. We then convert that into the `py_limited_api` form,
-    # e.g. cp39 for python 3.9.
+    # e.g. cp39 for Python 3.9.
     py_limited_api: str
     python_bounds = SpecifierSet(setup_kwargs["python_requires"])
     for minor_version in itertools.count(start=8):

changelog.d/18583.removal

@@ -0,0 +1 @@
+Remove obsolete and experimental `/sync/e2ee` endpoint.

changelog.d/18641.bugfix

@@ -0,0 +1 @@
+Ensure all PDUs sent via `/send` pass canonical JSON checks.

changelog.d/18695.feature

@@ -0,0 +1 @@
+Add experimental support for [MSC4308: Thread Subscriptions extension to Sliding Sync](https://github.com/matrix-org/matrix-spec-proposals/pull/4308) when [MSC4306: Thread Subscriptions](https://github.com/matrix-org/matrix-spec-proposals/pull/4306) and [MSC4186: Simplified Sliding Sync](https://github.com/matrix-org/matrix-spec-proposals/pull/4186) are enabled.

changelog.d/18791.misc

@@ -0,0 +1 @@
+Fix `LaterGauge` metrics to collect from all servers.

changelog.d/18819.misc

@@ -0,0 +1 @@
+Configure Synapse to run MSC4306: Thread Subscriptions Complement tests.

changelog.d/18823.bugfix

@@ -0,0 +1 @@
+Fix bug where we did not send invite revocations over federation.

changelog.d/18846.feature

@@ -0,0 +1 @@
+Update push rules for experimental [MSC4306: Thread Subscriptions](https://github.com/matrix-org/matrix-doc/issues/4306) to follow newer draft.

changelog.d/18848.feature

@@ -0,0 +1 @@
+Add `get_media_upload_limits_for_user` and `on_media_upload_limit_exceeded` module API callbacks for media repository.

changelog.d/18856.doc

@@ -0,0 +1 @@
+Clarify Python dependency constraints in our deprecation policy.

changelog.d/18870.misc

@@ -0,0 +1 @@
+Remove `sentinel` logcontext usage where we log in `setup`, `start` and exit.

changelog.d/18874.misc

@@ -0,0 +1 @@
+Use the `Enum`'s value for the dictionary key when responding to an admin request for experimental features.

changelog.d/18875.bugfix

@@ -0,0 +1 @@
+Fix prefixed support for MSC4133.

changelog.d/18878.docker

@@ -0,0 +1 @@
+Suppress "Applying schema" log noise bulk when `SYNAPSE_LOG_TESTING` is set.

changelog.d/18886.misc

@@ -0,0 +1 @@
+Start background tasks after we fork the process (daemonize).

changelog.d/18899.feature

@@ -0,0 +1 @@
+Add an in-memory cache to `_get_e2e_cross_signing_signatures_for_devices` to reduce DB load.

changelog.d/18900.misc

@@ -0,0 +1 @@
+Better explain how we manage the logcontext in `run_in_background(...)` and `run_as_background_process(...)`.

changelog.d/18906.misc

@@ -0,0 +1 @@
+Better explain how we manage the logcontext in `run_in_background(...)` and `run_as_background_process(...)`.

changelog.d/18909.bugfix

@@ -0,0 +1 @@
+Fix open redirect in legacy SSO flow with the `idp` query parameter.

changelog.d/18910.misc

@@ -0,0 +1 @@
+Replace usages of the deprecated `pkg_resources` interface in preparation of setuptools dropping it soon.

changelog.d/18931.doc

@@ -0,0 +1,2 @@
+Clarify necessary `jwt_config` parameter in OIDC documentation for authentik.
+Contributed by @maxkratz.

changelog.d/18944.misc

@@ -0,0 +1 @@
+Introduce `Clock.call_when_running(...)` to wrap startup code in a logcontext, ensuring we can identify which server generated the logs.

changelog.d/18945.misc

@@ -0,0 +1 @@
+Introduce `Clock.add_system_event_trigger(...)` to wrap system event callback code in a logcontext, ensuring we can identify which server generated the logs.

contrib/grafana/synapse.json

@@ -4396,7 +4396,7 @@
               "exemplar": false,
               "expr": "(time() - max without (job, index, host) (avg_over_time(synapse_federation_last_received_pdu_time[10m]))) / 60",
               "instant": false,
-              "legendFormat": "{{server_name}} ",
+              "legendFormat": "{{origin_server_name}} ",
               "range": true,
               "refId": "A"
             }
@@ -4518,7 +4518,7 @@
               "exemplar": false,
               "expr": "(time() - max without (job, index, host) (avg_over_time(synapse_federation_last_sent_pdu_time[10m]))) / 60",
               "instant": false,
-              "legendFormat": "{{server_name}}",
+              "legendFormat": "{{destination_server_name}}",
               "range": true,
               "refId": "A"
             }

debian/changelog

@@ -1,3 +1,51 @@
+matrix-synapse-py3 (1.138.0) stable; urgency=medium
+
+  * New Synapse release 1.138.0.
+
+ -- Synapse Packaging team <packages@matrix.org>  Tue, 09 Sep 2025 11:21:25 +0100
+
+matrix-synapse-py3 (1.138.0~rc1) stable; urgency=medium
+
+  * New synapse release 1.138.0rc1.
+
+ -- Synapse Packaging team <packages@matrix.org>  Tue, 02 Sep 2025 12:16:14 +0000
+
+matrix-synapse-py3 (1.137.0) stable; urgency=medium
+
+  * New Synapse release 1.137.0.
+
+ -- Synapse Packaging team <packages@matrix.org>  Tue, 26 Aug 2025 10:23:41 +0100
+
+matrix-synapse-py3 (1.137.0~rc1) stable; urgency=medium
+
+  * New Synapse release 1.137.0rc1.
+
+ -- Synapse Packaging team <packages@matrix.org>  Tue, 19 Aug 2025 10:55:22 +0100
+
+matrix-synapse-py3 (1.136.0) stable; urgency=medium
+
+  * New Synapse release 1.136.0.
+
+ -- Synapse Packaging team <packages@matrix.org>  Tue, 12 Aug 2025 13:18:03 +0100
+
+matrix-synapse-py3 (1.136.0~rc2) stable; urgency=medium
+
+  * New Synapse release 1.136.0rc2.
+
+ -- Synapse Packaging team <packages@matrix.org>  Mon, 11 Aug 2025 12:18:52 -0600
+
+matrix-synapse-py3 (1.136.0~rc1) stable; urgency=medium
+
+  * New Synapse release 1.136.0rc1.
+
+ -- Synapse Packaging team <packages@matrix.org>  Tue, 05 Aug 2025 08:13:30 -0600
+
+matrix-synapse-py3 (1.135.2) stable; urgency=medium
+
+  * New Synapse release 1.135.2.
+
+ -- Synapse Packaging team <packages@matrix.org>  Mon, 11 Aug 2025 11:52:01 -0600
+
 matrix-synapse-py3 (1.135.1) stable; urgency=medium
 
   * New Synapse release 1.135.1.

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

@@ -98,6 +98,10 @@ rc_delayed_event_mgmt:
   per_second: 9999
   burst_count: 9999
 
+rc_room_creation:
+  per_second: 9999
+  burst_count: 9999
+
 federation_rr_transactions_per_room_per_second: 9999
 
 allow_device_name_lookup_over_federation: true
@@ -129,6 +133,8 @@ experimental_features:
   msc3984_appservice_key_query: true
   # Invite filtering
   msc4155_enabled: true
+  # Thread Subscriptions
+  msc4306_enabled: true
 
 server_notices:
   system_mxid_localpart: _server

docker/conf/log.config

@@ -77,6 +77,13 @@ loggers:
     #}
     synapse.visibility.filtered_event_debug:
         level: DEBUG
+
+    {#
+      If Synapse is under test, we don't care about seeing the "Applying schema" log
+      lines at the INFO level every time we run the tests (it's 100 lines of bulk)
+    #}
+    synapse.storage.prepare_database:
+      level: WARN
     {% endif %}
 
 root:

docs/admin_api/client_server_api_extensions.md

@@ -22,4 +22,46 @@ To receive soft failed events in APIs like `/sync` and `/messages`, set `return_
 to `true` in the admin client config. When `false`, the normal behaviour of these endpoints is to
 exclude soft failed events.
 
+**Note**: If the policy server flagged the event as spam and that caused soft failure, that will be indicated
+in the event's `unsigned` content like so:
+
+```json
+{
+  "type": "m.room.message",
+  "other": "event_fields_go_here",
+  "unsigned": {
+    "io.element.synapse.soft_failed": true,
+    "io.element.synapse.policy_server_spammy": true
+  }
+}
+```
+
 Default: `false`
+
+## See events marked spammy by policy servers
+
+Learn more about policy servers from [MSC4284](https://github.com/matrix-org/matrix-spec-proposals/pull/4284).
+
+Similar to `return_soft_failed_events`, clients logged in with admin accounts can see events which were
+flagged by the policy server as spammy (and thus soft failed) by setting `return_policy_server_spammy_events`
+to `true`.
+
+`return_policy_server_spammy_events` may be `true` while `return_soft_failed_events` is `false` to only see
+policy server-flagged events. When `return_soft_failed_events` is `true` however, `return_policy_server_spammy_events`
+is always `true`.
+
+Events which were flagged by the policy will be flagged as `io.element.synapse.policy_server_spammy` in the
+event's `unsigned` content, like so:
+
+```json
+{
+  "type": "m.room.message",
+  "other": "event_fields_go_here",
+  "unsigned": {
+    "io.element.synapse.soft_failed": true,
+    "io.element.synapse.policy_server_spammy": true
+  }
+}
+```
+
+Default: `true` if `return_soft_failed_events` is `true`, otherwise `false`

docs/deprecation_policy.md

@@ -1,13 +1,11 @@
-Deprecation Policy for Platform Dependencies
-============================================
+# Deprecation Policy
 
-Synapse has a number of platform dependencies, including Python, Rust, 
-PostgreSQL and SQLite. This document outlines the policy towards which versions 
-we support, and when we drop support for versions in the future.
+Synapse has a number of **platform dependencies** (Python, Rust, PostgreSQL, and SQLite)
+and **application dependencies** (Python and Rust packages). This document outlines the
+policy towards which versions we support, and when we drop support for versions in the
+future.
 
-
-Policy
-------
+## Platform Dependencies
 
 Synapse follows the upstream support life cycles for Python and PostgreSQL,
 i.e. when a version reaches End of Life Synapse will withdraw support for that
@@ -26,8 +24,8 @@ The oldest supported version of SQLite is the version
 [provided](https://packages.debian.org/bullseye/libsqlite3-0) by
 [Debian oldstable](https://wiki.debian.org/DebianOldStable).
 
-Context
--------
+
+### Context
 
 It is important for system admins to have a clear understanding of the platform
 requirements of Synapse and its deprecation policies so that they can
@@ -50,4 +48,42 @@ the ecosystem.
 On a similar note, SQLite does not generally have a concept of "supported 
 release"; bugfixes are published for the latest minor release only. We chose to
 track Debian's oldstable as this is relatively conservative, predictably updated
-and is consistent with the `.deb` packages released by Matrix.org.
+and is consistent with the `.deb` packages released by Matrix.org.
+
+
+## Application dependencies
+
+For application-level Python dependencies, we often specify loose version constraints
+(ex. `>=X.Y.Z`) to be forwards compatible with any new versions. Upper bounds (`<A.B.C`)
+are only added when necessary to prevent known incompatibilities.
+
+When selecting a minimum version, while we are mindful of the impact on downstream
+package maintainers, our primary focus is on the maintainability and progress of Synapse
+itself.
+
+For developers, a Python dependency version can be considered a "no-brainer" upgrade once it is
+available in both the latest [Debian Stable](https://packages.debian.org/stable/) and
+[Ubuntu LTS](https://launchpad.net/ubuntu) repositories. No need to burden yourself with
+extra scrutiny or consideration at this point.
+
+We aggressively update Rust dependencies. Since these are statically linked and managed
+entirely by `cargo` during build, they *can* pose no ongoing maintenance burden on others.
+This allows us to freely upgrade to leverage the latest ecosystem advancements assuming
+they don't have their own system-level dependencies.
+
+
+### Context
+
+Because Python dependencies can easily be managed in a virtual environment, we are less
+concerned about the criteria for selecting minimum versions. The only thing of concern
+is making sure we're not making it unnecessarily difficult for downstream package
+maintainers. Generally, this just means avoiding the bleeding edge for a few months.
+
+The situation for Rust dependencies is fundamentally different. For packagers, the
+concerns around Python dependency versions do not apply. The `cargo` tool handles
+downloading and building all libraries to satisfy dependencies, and these libraries are
+statically linked into the final binary. This means that from a packager's perspective,
+the Rust dependency versions are an internal build detail, not a runtime dependency to
+be managed on the target system. Consequently, we have even greater flexibility to
+upgrade Rust dependencies as needed for the project. Some distros (e.g. Fedora) do
+package Rust libraries, but this appears to be the outlier rather than the norm.

docs/log_contexts.md

@@ -59,6 +59,28 @@ def do_request_handling():
     logger.debug("phew")
 ```
 
+### The `sentinel` context
+
+The default logcontext is `synapse.logging.context.SENTINEL_CONTEXT`, which is an empty
+sentinel value to represent the root logcontext. This is what is used when there is no
+other logcontext set. The phrase "clear/reset the logcontext" means to set the current
+logcontext to the `sentinel` logcontext.
+
+No CPU/database usage metrics are recorded against the `sentinel` logcontext.
+
+Ideally, nothing from the Synapse homeserver would be logged against the `sentinel`
+logcontext as we want to know which server the logs came from. In practice, this is not
+always the case yet especially outside of request handling.
+
+Global things outside of Synapse (e.g. Twisted reactor code) should run in the
+`sentinel` logcontext. It's only when it calls into application code that a logcontext
+gets activated. This means the reactor should be started in the `sentinel` logcontext,
+and any time an awaitable yields control back to the reactor, it should reset the
+logcontext to be the `sentinel` logcontext. This is important to avoid leaking the
+current logcontext to the reactor (which would then get picked up and associated with
+the next thing the reactor does).
+
+
 ## Using logcontexts with awaitables
 
 Awaitables break the linear flow of code so that there is no longer a single entry point

docs/modules/media_repository_callbacks.md

@@ -64,3 +64,68 @@ If multiple modules implement this callback, they will be considered in order. I
 returns `True`, Synapse falls through to the next one. The value of the first callback that
 returns `False` will be used. If this happens, Synapse will not call any of the subsequent
 implementations of this callback.
+
+### `get_media_upload_limits_for_user`
+
+_First introduced in Synapse v1.139.0_
+
+```python
+async def get_media_upload_limits_for_user(user_id: str, size: int) -> Optional[List[synapse.module_api.MediaUploadLimit]]
+```
+
+**<span style="color:red">
+Caution: This callback is currently experimental. The method signature or behaviour
+may change without notice.
+</span>**
+
+Called when processing a request to store content in the media repository. This can be used to dynamically override
+the [media upload limits configuration](../usage/configuration/config_documentation.html#media_upload_limits).
+
+The arguments passed to this callback are:
+
+* `user_id`: The Matrix user ID of the user (e.g. `@alice:example.com`) making the request.
+
+If the callback returns a list then it will be used as the limits instead of those in the configuration (if any).
+
+If an empty list is returned then no limits are applied (**warning:** users will be able
+to upload as much data as they desire).
+
+If multiple modules implement this callback, they will be considered in order. If a
+callback returns `None`, Synapse falls through to the next one. The value of the first
+callback that does not return `None` will be used. If this happens, Synapse will not call
+any of the subsequent implementations of this callback.
+
+If there are no registered modules, or if all modules return `None`, then
+the default
+[media upload limits configuration](../usage/configuration/config_documentation.html#media_upload_limits)
+will be used.
+
+### `on_media_upload_limit_exceeded`
+
+_First introduced in Synapse v1.139.0_
+
+```python
+async def on_media_upload_limit_exceeded(user_id: str, limit: synapse.module_api.MediaUploadLimit, sent_bytes: int, attempted_bytes: int) -> None
+```
+
+**<span style="color:red">
+Caution: This callback is currently experimental. The method signature or behaviour
+may change without notice.
+</span>**
+
+Called when a user attempts to upload media that would exceed a
+[configured media upload limit](../usage/configuration/config_documentation.html#media_upload_limits).
+
+This callback will only be called on workers which handle
+[POST /_matrix/media/v3/upload](https://spec.matrix.org/v1.15/client-server-api/#post_matrixmediav3upload)
+requests.
+
+This could be used to inform the user that they have reached a media upload limit through
+some external method.
+
+The arguments passed to this callback are:
+
+* `user_id`: The Matrix user ID of the user (e.g. `@alice:example.com`) making the request.
+* `limit`: The `synapse.module_api.MediaUploadLimit` representing the limit that was reached.
+* `sent_bytes`: The number of bytes already sent during the period of the limit.
+* `attempted_bytes`: The number of bytes that the user attempted to send.

docs/openid.md

@@ -186,6 +186,7 @@ oidc_providers:
 4. Note the slug of your application, Client ID and Client Secret.
 
 Note: RSA keys must be used for signing for Authentik, ECC keys do not work.
+Note: The provider must have a signing key set and must not use an encryption key.
 
 Synapse config:
 ```yaml
@@ -204,6 +205,12 @@ oidc_providers:
       config:
         localpart_template: "{{ user.preferred_username }}"
         display_name_template: "{{ user.preferred_username|capitalize }}" # TO BE FILLED: If your users have names in Authentik and you want those in Synapse, this should be replaced with user.name|capitalize.
+[...]
+jwt_config:
+    enabled: true
+    secret: "your client secret" # TO BE FILLED (same as `client_secret` above)
+    algorithm: "RS256"
+    # (...other fields)
 ```
 
 ### Dex

docs/setup/forward_proxy.md

@@ -7,8 +7,23 @@ proxy is supported, not SOCKS proxy or anything else.
 
 ## Configure
 
-The `http_proxy`, `https_proxy`, `no_proxy` environment variables are used to
-specify proxy settings. The environment variable is not case sensitive.
+The proxy settings can be configured in the homeserver configuration file via
+[`http_proxy`](../usage/configuration/config_documentation.md#http_proxy),
+[`https_proxy`](../usage/configuration/config_documentation.md#https_proxy), and
+[`no_proxy_hosts`](../usage/configuration/config_documentation.md#no_proxy_hosts).
+
+`homeserver.yaml` example:
+```yaml
+http_proxy: http://USERNAME:PASSWORD@10.0.1.1:8080/
+https_proxy: http://USERNAME:PASSWORD@proxy.example.com:8080/
+no_proxy_hosts:
+  - master.hostname.example.com
+  - 10.1.0.0/16
+  - 172.30.0.0/16
+```
+
+The proxy settings can also be configured via the `http_proxy`, `https_proxy`,
+`no_proxy` environment variables. The environment variable is not case sensitive.
 - `http_proxy`: Proxy server to use for HTTP requests.
 - `https_proxy`: Proxy server to use for HTTPS requests.
 - `no_proxy`: Comma-separated list of hosts, IP addresses, or IP ranges in CIDR
@@ -44,7 +59,7 @@ The proxy will be **used** for:
 - phone-home stats
 - recaptcha validation
 - CAS auth validation
-- OpenID Connect
+- OpenID Connect (OIDC)
 - Outbound federation
 - Federation (checking public key revocation)
 - Fetching public keys of other servers
@@ -53,7 +68,7 @@ The proxy will be **used** for:
 It will **not be used** for:
 
 - Application Services
-- Identity servers
+- Matrix Identity servers
 - In worker configurations
   - connections between workers
   - connections from workers to Redis

docs/setup/turn/coturn.md

@@ -88,7 +88,8 @@ This will install and start a systemd service called `coturn`.
     denied-peer-ip=172.16.0.0-172.31.255.255
 
     # recommended additional local peers to block, to mitigate external access to internal services.
-    # https://www.rtcsec.com/article/slack-webrtc-turn-compromise-and-bug-bounty/#how-to-fix-an-open-turn-relay-to-address-this-vulnerability
+    # https://www.enablesecurity.com/blog/slack-webrtc-turn-compromise-and-bug-bounty/#how-to-fix-an-open-turn-relay-to-address-this-vulnerability
+    # https://www.enablesecurity.com/blog/cve-2020-26262-bypass-of-coturns-access-control-protection/#further-concerns-what-else
     no-multicast-peers
     denied-peer-ip=0.0.0.0-0.255.255.255
     denied-peer-ip=100.64.0.0-100.127.255.255
@@ -101,6 +102,14 @@ This will install and start a systemd service called `coturn`.
     denied-peer-ip=198.51.100.0-198.51.100.255
     denied-peer-ip=203.0.113.0-203.0.113.255
     denied-peer-ip=240.0.0.0-255.255.255.255
+    denied-peer-ip=::1
+    denied-peer-ip=64:ff9b::-64:ff9b::ffff:ffff
+    denied-peer-ip=::ffff:0.0.0.0-::ffff:255.255.255.255
+    denied-peer-ip=100::-100::ffff:ffff:ffff:ffff
+    denied-peer-ip=2001::-2001:1ff:ffff:ffff:ffff:ffff:ffff:ffff
+    denied-peer-ip=2002::-2002:ffff:ffff:ffff:ffff:ffff:ffff:ffff
+    denied-peer-ip=fc00::-fdff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
+    denied-peer-ip=fe80::-febf:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 
     # special case the turn server itself so that client->TURN->TURN->client flows work
     # this should be one of the turn server's listening IPs

docs/structured_logging.md

@@ -35,7 +35,7 @@ handlers:
 loggers:
     synapse:
         level: INFO
-        handlers: [remote]
+        handlers: [file]
     synapse.storage.SQL:
         level: WARNING
 ```

docs/upgrade.md

@@ -117,6 +117,77 @@ 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 v1.136.0
+
+## Deprecate `run_as_background_process` exported as part of the module API interface in favor of `ModuleApi.run_as_background_process`
+
+The `run_as_background_process` function is now a method of the `ModuleApi` class. If
+you were using the function directly from the module API, it will continue to work fine
+but the background process metrics will not include an accurate `server_name` label.
+This kind of metric labeling isn't relevant for many use cases and is used to
+differentiate Synapse instances running in the same Python process (relevant to Synapse
+Pro: Small Hosts). We recommend updating your usage to use the new
+`ModuleApi.run_as_background_process` method to stay on top of future changes.
+
+<details>
+<summary>Example <code>run_as_background_process</code> upgrade</summary>
+
+Before:
+```python
+class MyModule:
+    def __init__(self, module_api: ModuleApi) -> None:
+        run_as_background_process(__name__ + ":setup_database", self.setup_database)
+```
+
+After:
+```python
+class MyModule:
+    def __init__(self, module_api: ModuleApi) -> None:
+        module_api.run_as_background_process(__name__ + ":setup_database", self.setup_database)
+```
+
+</details>
+
+## Metric labels have changed on `synapse_federation_last_received_pdu_time` and `synapse_federation_last_sent_pdu_time`
+
+Previously, the `synapse_federation_last_received_pdu_time` and
+`synapse_federation_last_sent_pdu_time` metrics both used the `server_name` label to
+differentiate between different servers that we send and receive events from.
+
+Since we're now using the `server_name` label to differentiate between different Synapse
+homeserver instances running in the same process, these metrics have been changed as follows:
+
+ - `synapse_federation_last_received_pdu_time` now uses the `origin_server_name` label
+ - `synapse_federation_last_sent_pdu_time` now uses the `destination_server_name` label
+
+The Grafana dashboard JSON in `contrib/grafana/synapse.json` has been updated to reflect
+this change but you will need to manually update your own existing Grafana dashboards
+using these metrics.
+
+## Stable integration with Matrix Authentication Service
+
+Support for [Matrix Authentication Service (MAS)](https://github.com/element-hq/matrix-authentication-service) is now stable, with a simplified configuration.
+This stable integration requires MAS 0.20.0 or later.
+
+The existing `experimental_features.msc3861` configuration option is now deprecated and will be removed in Synapse v1.137.0.
+
+Synapse deployments already using MAS should now use the new configuration options:
+
+```yaml
+matrix_authentication_service:
+  # Enable the MAS integration
+  enabled: true
+  # The base URL where Synapse will contact MAS
+  endpoint: http://localhost:8080
+  # The shared secret used to authenticate MAS requests, must be the same as `matrix.secret` in the MAS configuration
+  # See https://element-hq.github.io/matrix-authentication-service/reference/configuration.html#matrix
+  secret: "asecurerandomsecretstring"
+```
+
+They must remove the `experimental_features.msc3861` configuration option from their configuration.
+
+They can also remove the client previously used by Synapse [in the MAS configuration](https://element-hq.github.io/matrix-authentication-service/reference/configuration.html#clients) as it is no longer in use.
+
 # Upgrading to v1.135.0
 
 ## `on_user_registration` module API callback may now run on any worker
@@ -137,10 +208,10 @@ native ICU library on your system is no longer required.
 ## Documented endpoint which can be delegated to a federation worker
 
 The endpoint `^/_matrix/federation/v1/version$` can be delegated to a federation
-worker. This is not new behaviour, but had not been documented yet. The 
-[list of delegatable endpoints](workers.md#synapseappgeneric_worker) has 
+worker. This is not new behaviour, but had not been documented yet. The
+[list of delegatable endpoints](workers.md#synapseappgeneric_worker) has
 been updated to include it. Make sure to check your reverse proxy rules if you
-are using workers. 
+are using workers.
 
 # Upgrading to v1.126.0
 

docs/usage/configuration/config_documentation.md

@@ -610,6 +610,61 @@ manhole_settings:
   ssh_pub_key_path: CONFDIR/id_rsa.pub
 ```
 ---
+### `http_proxy`
+
+*(string|null)* Proxy server to use for HTTP requests.
+For more details, see the [forward proxy documentation](../../setup/forward_proxy.md). There is no default for this option.
+
+Example configuration:
+```yaml
+http_proxy: http://USERNAME:PASSWORD@10.0.1.1:8080/
+```
+---
+### `https_proxy`
+
+*(string|null)* Proxy server to use for HTTPS requests.
+For more details, see the [forward proxy documentation](../../setup/forward_proxy.md). There is no default for this option.
+
+Example configuration:
+```yaml
+https_proxy: http://USERNAME:PASSWORD@proxy.example.com:8080/
+```
+---
+### `no_proxy_hosts`
+
+*(array)* List of hosts, IP addresses, or IP ranges in CIDR format which should not use the proxy. Synapse will directly connect to these hosts.
+For more details, see the [forward proxy documentation](../../setup/forward_proxy.md). There is no default for this option.
+
+Example configuration:
+```yaml
+no_proxy_hosts:
+- master.hostname.example.com
+- 10.1.0.0/16
+- 172.30.0.0/16
+```
+---
+### `matrix_authentication_service`
+
+*(object)* The `matrix_authentication_service` setting configures integration with [Matrix Authentication Service (MAS)](https://github.com/element-hq/matrix-authentication-service).
+
+This setting has the following sub-options:
+
+* `enabled` (boolean): Whether or not to enable the MAS integration. If this is set to `false`, Synapse will use its legacy internal authentication API. Defaults to `false`.
+
+* `endpoint` (string): The URL where Synapse can reach MAS. This *must* have the `discovery` and `oauth` resources mounted. Defaults to `"http://localhost:8080"`.
+
+* `secret` (string|null): A shared secret that will be used to authenticate requests from and to MAS.
+
+* `secret_path` (string|null): Alternative to `secret`, reading the shared secret from a file. The file should be a plain text file, containing only the secret. Synapse reads the secret from the given file once at startup.
+
+Example configuration:
+```yaml
+matrix_authentication_service:
+  enabled: true
+  secret: someverysecuresecret
+  endpoint: http://localhost:8080
+```
+---
 ### `dummy_events_threshold`
 
 *(integer)* Forward extremities can build up in a room due to networking delays between homeservers. Once this happens in a large room, calculation of the state of that room can become quite expensive. To mitigate this, once the number of forward extremities reaches a given threshold, Synapse will send an `org.matrix.dummy_event` event, which will reduce the forward extremities in the room.
@@ -1963,6 +2018,31 @@ rc_reports:
   burst_count: 20.0
 ```
 ---
+### `rc_room_creation`
+
+*(object)* Sets rate limits for how often users are able to create rooms.
+
+This setting has the following sub-options:
+
+* `per_second` (number): Maximum number of requests a client can send per second.
+
+* `burst_count` (number): Maximum number of requests a client can send before being throttled.
+
+Default configuration:
+```yaml
+rc_room_creation:
+  per_user:
+    per_second: 0.016
+    burst_count: 10.0
+```
+
+Example configuration:
+```yaml
+rc_room_creation:
+  per_second: 1.0
+  burst_count: 5.0
+```
+---
 ### `federation_rr_transactions_per_room_per_second`
 
 *(integer)* Sets outgoing federation transaction frequency for sending read-receipts, per-room.
@@ -2088,9 +2168,12 @@ max_upload_size: 60M
 ### `media_upload_limits`
 
 *(array)* A list of media upload limits defining how much data a given user can upload in a given time period.
+These limits are applied in addition to the `max_upload_size` limit above (which applies to individual uploads).
 
 An empty list means no limits are applied.
 
+These settings can be overridden using the `get_media_upload_limits_for_user` module API [callback](../../modules/media_repository_callbacks.md#get_media_upload_limits_for_user).
+
 Defaults to `[]`.
 
 Example configuration:

docs/workers.md

@@ -252,7 +252,7 @@ information.
     ^/_matrix/client/(api/v1|r0|v3|unstable)/directory/room/.*$
     ^/_matrix/client/(r0|v3|unstable)/capabilities$
     ^/_matrix/client/(r0|v3|unstable)/notifications$
-    ^/_synapse/admin/v1/rooms/
+    ^/_synapse/admin/v1/rooms/[^/]+$
 
     # Encryption requests
     ^/_matrix/client/(r0|v3|unstable)/keys/query$
@@ -260,7 +260,7 @@ information.
     ^/_matrix/client/(r0|v3|unstable)/keys/claim$
     ^/_matrix/client/(r0|v3|unstable)/room_keys/
     ^/_matrix/client/(r0|v3|unstable)/keys/upload
-    ^/_matrix/client/(api/v1|r0|v3|unstable/keys/device_signing/upload$
+    ^/_matrix/client/(api/v1|r0|v3|unstable)/keys/device_signing/upload$
     ^/_matrix/client/(api/v1|r0|v3|unstable)/keys/signatures/upload$
 
     # Registration/login requests
@@ -532,8 +532,9 @@ the stream writer for the `account_data` stream:
 
 ##### The `receipts` stream
 
-The following endpoints should be routed directly to the worker configured as
-the stream writer for the `receipts` stream:
+The `receipts` stream supports multiple writers. The following endpoints
+can be handled by any worker, but should be routed directly to one of the workers
+configured as stream writer for the `receipts` stream:
 
     ^/_matrix/client/(r0|v3|unstable)/rooms/.*/receipt
     ^/_matrix/client/(r0|v3|unstable)/rooms/.*/read_markers
@@ -555,13 +556,13 @@ the stream writer for the `push_rules` stream:
 ##### The `device_lists` stream
 
 The `device_lists` stream supports multiple writers. The following endpoints
-can be handled by any worker, but should be routed directly one of the workers
+can be handled by any worker, but should be routed directly to one of the workers
 configured as stream writer for the `device_lists` stream:
 
     ^/_matrix/client/(r0|v3)/delete_devices$
-    ^/_matrix/client/(api/v1|r0|v3|unstable)/devices/
+    ^/_matrix/client/(api/v1|r0|v3|unstable)/devices(/|$)
     ^/_matrix/client/(r0|v3|unstable)/keys/upload
-    ^/_matrix/client/(api/v1|r0|v3|unstable/keys/device_signing/upload$
+    ^/_matrix/client/(api/v1|r0|v3|unstable)/keys/device_signing/upload$
     ^/_matrix/client/(api/v1|r0|v3|unstable)/keys/signatures/upload$
 
 #### Restrict outbound federation traffic to a specific set of workers

mypy.ini

@@ -1,6 +1,17 @@
 [mypy]
 namespace_packages = True
-plugins = pydantic.mypy, mypy_zope:plugin, scripts-dev/mypy_synapse_plugin.py
+# Our custom mypy plugin should remain first in this list.
+#
+# mypy has a limitation where it only chooses the first plugin that returns a non-None
+# value for each hook (known-limitation, c.f.
+# https://github.com/python/mypy/issues/19524). We workaround this by putting our custom
+# plugin first in the plugin order and then manually calling any other conflicting
+# plugin hooks in our own plugin followed by our own checks.
+#
+# If you add a new plugin, make sure to check whether the hooks being used conflict with
+# our custom plugin hooks and if so, manually call the other plugin's hooks in our
+# custom plugin. (also applies to if the plugin is updated in the future)
+plugins = scripts-dev/mypy_synapse_plugin.py, pydantic.mypy, mypy_zope:plugin
 follow_imports = normal
 show_error_codes = True
 show_traceback = True
@@ -99,3 +110,6 @@ ignore_missing_imports = True
 
 [mypy-multipart.*]
 ignore_missing_imports = True
+
+[mypy-mypy_zope.*]
+ignore_missing_imports = True

poetry.lock

@@ -34,15 +34,15 @@ tests-mypy = ["mypy (>=1.11.1) ; platform_python_implementation == \"CPython\" a
 
 [[package]]
 name = "authlib"
-version = "1.6.1"
+version = "1.6.3"
 description = "The ultimate Python library in building OAuth and OpenID Connect servers and clients."
 optional = true
 python-versions = ">=3.9"
 groups = ["main"]
 markers = "extra == \"all\" or extra == \"jwt\" or extra == \"oidc\""
 files = [
-    {file = "authlib-1.6.1-py2.py3-none-any.whl", hash = "sha256:e9d2031c34c6309373ab845afc24168fe9e93dc52d252631f52642f21f5ed06e"},
-    {file = "authlib-1.6.1.tar.gz", hash = "sha256:4dffdbb1460ba6ec8c17981a4c67af7d8af131231b5a36a88a1e8c80c111cdfd"},
+    {file = "authlib-1.6.3-py2.py3-none-any.whl", hash = "sha256:7ea0f082edd95a03b7b72edac65ec7f8f68d703017d7e37573aee4fc603f2a48"},
+    {file = "authlib-1.6.3.tar.gz", hash = "sha256:9f7a982cc395de719e4c2215c5707e7ea690ecf84f1ab126f28c053f4219e610"},
 ]
 
 [package.dependencies]
@@ -441,24 +441,6 @@ files = [
     {file = "defusedxml-0.7.1.tar.gz", hash = "sha256:1bb3032db185915b62d7c6209c5a8792be6a32ab2fedacc84e01b52c51aa3e69"},
 ]
 
-[[package]]
-name = "deprecated"
-version = "1.2.13"
-description = "Python @deprecated decorator to deprecate old python classes, functions or methods."
-optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-groups = ["dev"]
-files = [
-    {file = "Deprecated-1.2.13-py2.py3-none-any.whl", hash = "sha256:64756e3e14c8c5eea9795d93c524551432a0be75629f8f29e67ab8caf076c76d"},
-    {file = "Deprecated-1.2.13.tar.gz", hash = "sha256:43ac5335da90c31c24ba028af536a91d41d53f9e6901ddb021bcc572ce44e38d"},
-]
-
-[package.dependencies]
-wrapt = ">=1.10,<2"
-
-[package.extras]
-dev = ["PyTest (<5) ; python_version < \"3.6\"", "PyTest ; python_version >= \"3.6\"", "PyTest-Cov (<2.6) ; python_version < \"3.6\"", "PyTest-Cov ; python_version >= \"3.6\"", "bump2version (<1)", "configparser (<5) ; python_version < \"3\"", "importlib-metadata (<3) ; python_version < \"3\"", "importlib-resources (<4) ; python_version < \"3\"", "sphinx (<2)", "sphinxcontrib-websupport (<2) ; python_version < \"3\"", "tox", "zipp (<2) ; python_version < \"3\""]
-
 [[package]]
 name = "docutils"
 version = "0.19"
@@ -504,18 +486,19 @@ smmap = ">=3.0.1,<6"
 
 [[package]]
 name = "gitpython"
-version = "3.1.44"
+version = "3.1.45"
 description = "GitPython is a Python library used to interact with Git repositories"
 optional = false
 python-versions = ">=3.7"
 groups = ["dev"]
 files = [
-    {file = "GitPython-3.1.44-py3-none-any.whl", hash = "sha256:9e0e10cda9bed1ee64bc9a6de50e7e38a9c9943241cd7f585f6df3ed28011110"},
-    {file = "gitpython-3.1.44.tar.gz", hash = "sha256:c87e30b26253bf5418b01b0660f818967f3c503193838337fe5e573331249269"},
+    {file = "gitpython-3.1.45-py3-none-any.whl", hash = "sha256:8908cb2e02fb3b93b7eb0f2827125cb699869470432cc885f019b8fd0fccff77"},
+    {file = "gitpython-3.1.45.tar.gz", hash = "sha256:85b0ee964ceddf211c41b9f27a49086010a190fd8132a24e21f362a4b36a791c"},
 ]
 
 [package.dependencies]
 gitdb = ">=4.0.1,<5"
+typing-extensions = {version = ">=3.10.0.2", markers = "python_version < \"3.10\""}
 
 [package.extras]
 doc = ["sphinx (>=7.1.2,<7.2)", "sphinx-autodoc-typehints", "sphinx_rtd_theme"]
@@ -936,14 +919,14 @@ i18n = ["Babel (>=2.7)"]
 
 [[package]]
 name = "jsonschema"
-version = "4.25.0"
+version = "4.25.1"
 description = "An implementation of JSON Schema validation for Python"
 optional = false
 python-versions = ">=3.9"
 groups = ["main"]
 files = [
-    {file = "jsonschema-4.25.0-py3-none-any.whl", hash = "sha256:24c2e8da302de79c8b9382fee3e76b355e44d2a4364bb207159ce10b517bd716"},
-    {file = "jsonschema-4.25.0.tar.gz", hash = "sha256:e63acf5c11762c0e6672ffb61482bdf57f0876684d8d249c0fe2d730d48bc55f"},
+    {file = "jsonschema-4.25.1-py3-none-any.whl", hash = "sha256:3fba0169e345c7175110351d456342c364814cfcf3b964ba4587f22915230a63"},
+    {file = "jsonschema-4.25.1.tar.gz", hash = "sha256:e4a9655ce0da0c0b67a085847e00a3a51449e1157f4f75e9fb5aa545e122eb85"},
 ]
 
 [package.dependencies]
@@ -1386,44 +1369,50 @@ docs = ["sphinx (>=8,<9)", "sphinx-autobuild"]
 
 [[package]]
 name = "mypy"
-version = "1.16.1"
+version = "1.17.1"
 description = "Optional static typing for Python"
 optional = false
 python-versions = ">=3.9"
 groups = ["dev"]
 files = [
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+    {file = "mypy-1.17.1.tar.gz", hash = "sha256:25e01ec741ab5bb3eec8ba9cdb0f769230368a22c959c4937360efb89b7e9f01"},
 ]
 
 [package.dependencies]
@@ -1453,18 +1442,18 @@ files = [
 
 [[package]]
 name = "mypy-zope"
-version = "1.0.12"
+version = "1.0.13"
 description = "Plugin for mypy to support zope interfaces"
 optional = false
 python-versions = "*"
 groups = ["dev"]
 files = [
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+    {file = "mypy_zope-1.0.13.tar.gz", hash = "sha256:63fb4d035ea874baf280dc69e714dcde4bd2a4a4837a0fd8d90ce91bea510f99"},
 ]
 
 [package.dependencies]
-mypy = ">=1.0.0,<1.17.0"
+mypy = ">=1.0.0,<1.18.0"
 "zope.interface" = "*"
 "zope.schema" = "*"
 
@@ -1542,14 +1531,14 @@ files = [
 
 [[package]]
 name = "phonenumbers"
-version = "9.0.9"
+version = "9.0.13"
 description = "Python version of Google's common library for parsing, formatting, storing and validating international phone numbers."
 optional = false
 python-versions = "*"
 groups = ["main"]
 files = [
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+    {file = "phonenumbers-9.0.13.tar.gz", hash = "sha256:eca06e01382412c45316868f86a44bb217c02f9ee7196589041556a2f54a7639"},
 ]
 
 [[package]]
@@ -1785,14 +1774,14 @@ files = [
 
 [[package]]
 name = "pydantic"
-version = "2.11.7"
+version = "2.11.9"
 description = "Data validation using Python type hints"
 optional = false
 python-versions = ">=3.9"
 groups = ["main", "dev"]
 files = [
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+    {file = "pydantic-2.11.9.tar.gz", hash = "sha256:6b8ffda597a14812a7975c90b82a8a2e777d9257aba3453f973acd3c032a18e2"},
 ]
 
 [package.dependencies]
@@ -1919,22 +1908,21 @@ typing-extensions = ">=4.6.0,<4.7.0 || >4.7.0"
 
 [[package]]
 name = "pygithub"
-version = "2.6.1"
+version = "2.7.0"
 description = "Use the full Github API v3"
 optional = false
 python-versions = ">=3.8"
 groups = ["dev"]
 files = [
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 ]
 
 [package.dependencies]
-Deprecated = "*"
 pyjwt = {version = ">=2.4.0", extras = ["crypto"]}
 pynacl = ">=1.4.0"
 requests = ">=2.14.0"
-typing-extensions = ">=4.0.0"
+typing-extensions = ">=4.5.0"
 urllib3 = ">=1.26.0"
 
 [[package]]
@@ -2408,30 +2396,31 @@ files = [
 
 [[package]]
 name = "ruff"
-version = "0.12.4"
+version = "0.12.10"
 description = "An extremely fast Python linter and code formatter, written in Rust."
 optional = false
 python-versions = ">=3.7"
 groups = ["dev"]
 files = [
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 ]
 
 [[package]]
@@ -2469,15 +2458,15 @@ doc = ["Sphinx", "sphinx-rtd-theme"]
 
 [[package]]
 name = "sentry-sdk"
-version = "2.32.0"
+version = "2.34.1"
 description = "Python client for Sentry (https://sentry.io)"
 optional = true
 python-versions = ">=3.6"
 groups = ["main"]
 markers = "extra == \"all\" or extra == \"sentry\""
 files = [
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+    {file = "sentry_sdk-2.34.1-py2.py3-none-any.whl", hash = "sha256:b7a072e1cdc5abc48101d5146e1ae680fa81fe886d8d95aaa25a0b450c818d32"},
+    {file = "sentry_sdk-2.34.1.tar.gz", hash = "sha256:69274eb8c5c38562a544c3e9f68b5be0a43be4b697f5fd385bf98e4fbe672687"},
 ]
 
 [package.dependencies]
@@ -2758,14 +2747,14 @@ files = [
 
 [[package]]
 name = "towncrier"
-version = "24.8.0"
+version = "25.8.0"
 description = "Building newsfiles for your project."
 optional = false
-python-versions = ">=3.8"
+python-versions = ">=3.9"
 groups = ["dev"]
 files = [
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-    {file = "towncrier-24.8.0.tar.gz", hash = "sha256:013423ee7eed102b2f393c287d22d95f66f1a3ea10a4baa82d298001a7f18af3"},
+    {file = "towncrier-25.8.0-py3-none-any.whl", hash = "sha256:b953d133d98f9aeae9084b56a3563fd2519dfc6ec33f61c9cd2c61ff243fb513"},
+    {file = "towncrier-25.8.0.tar.gz", hash = "sha256:eef16d29f831ad57abb3ae32a0565739866219f1ebfbdd297d32894eb9940eb1"},
 ]
 
 [package.dependencies]
@@ -2889,14 +2878,14 @@ twisted = "*"
 
 [[package]]
 name = "types-bleach"
-version = "6.2.0.20250514"
+version = "6.2.0.20250809"
 description = "Typing stubs for bleach"
 optional = false
 python-versions = ">=3.9"
 groups = ["dev"]
 files = [
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+    {file = "types_bleach-6.2.0.20250809-py3-none-any.whl", hash = "sha256:0b372a75117947d9ac8a31ae733fd0f8d92ec75c4772e7b37093ba3fa5b48fb9"},
+    {file = "types_bleach-6.2.0.20250809.tar.gz", hash = "sha256:188d7a1119f6c953140b513ed57ba4213755695815472c19d0c22ac09c79b90b"},
 ]
 
 [package.dependencies]
@@ -2931,14 +2920,14 @@ files = [
 
 [[package]]
 name = "types-jsonschema"
-version = "4.24.0.20250708"
+version = "4.25.1.20250822"
 description = "Typing stubs for jsonschema"
 optional = false
 python-versions = ">=3.9"
 groups = ["dev"]
 files = [
-    {file = "types_jsonschema-4.24.0.20250708-py3-none-any.whl", hash = "sha256:d574aa3421d178a8435cc898cf4cf5e5e8c8f37b949c8e3ceeff06da433a18bf"},
-    {file = "types_jsonschema-4.24.0.20250708.tar.gz", hash = "sha256:a910e4944681cbb1b18a93ffb502e09910db788314312fc763df08d8ac2aadb7"},
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+    {file = "types_jsonschema-4.25.1.20250822.tar.gz", hash = "sha256:aac69ed4b23f49aaceb7fcb834141d61b9e4e6a7f6008cb2f0d3b831dfa8464a"},
 ]
 
 [package.dependencies]
@@ -2982,14 +2971,14 @@ files = [
 
 [[package]]
 name = "types-psycopg2"
-version = "2.9.21.20250516"
+version = "2.9.21.20250915"
 description = "Typing stubs for psycopg2"
 optional = false
 python-versions = ">=3.9"
 groups = ["dev"]
 files = [
-    {file = "types_psycopg2-2.9.21.20250516-py3-none-any.whl", hash = "sha256:2a9212d1e5e507017b31486ce8147634d06b85d652769d7a2d91d53cb4edbd41"},
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 ]
 
 [[package]]
@@ -3010,26 +2999,26 @@ types-cffi = "*"
 
 [[package]]
 name = "types-pyyaml"
-version = "6.0.12.20250516"
+version = "6.0.12.20250809"
 description = "Typing stubs for PyYAML"
 optional = false
 python-versions = ">=3.9"
 groups = ["dev"]
 files = [
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 [package.dependencies]
@@ -3037,14 +3026,14 @@ urllib3 = ">=2"
 
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 [[package]]
 name = "xmlschema"
 version = "2.4.0"
@@ -3352,4 +3256,4 @@ url-preview = ["lxml"]
 [metadata]
 lock-version = "2.1"
 python-versions = "^3.9.0"
-content-hash = "b1a0f4708465fd597d0bc7ebb09443ce0e2613cd58a33387a28036249f26856b"
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pyproject.toml

@@ -101,7 +101,7 @@ module-name = "synapse.synapse_rust"
 
 [tool.poetry]
 name = "matrix-synapse"
-version = "1.135.1"
+version = "1.138.0"
 description = "Homeserver for the Matrix decentralised comms protocol"
 authors = ["Matrix.org Team and Contributors <packages@matrix.org>"]
 license = "AGPL-3.0-or-later"
@@ -178,8 +178,13 @@ signedjson = "^1.1.0"
 service-identity = ">=18.1.0"
 # Twisted 18.9 introduces some logger improvements that the structured
 # logger utilises
-Twisted = {extras = ["tls"], version = ">=18.9.0"}
-treq = ">=15.1"
+# Twisted 19.7.0 moves test helpers to a new module and deprecates the old location.
+# Twisted 21.2.0 introduces contextvar support.
+# We could likely bump this to 22.1 without making distro packagers'
+# lives hard (as of 2025-07, distro support is Ubuntu LTS: 22.1, Debian stable: 22.4,
+# RHEL 9: 22.10)
+Twisted = {extras = ["tls"], version = ">=21.2.0"}
+treq = ">=21.5.0"
 # Twisted has required pyopenssl 16.0 since about Twisted 16.6.
 pyOpenSSL = ">=16.0.0"
 PyYAML = ">=5.3"
@@ -319,7 +324,7 @@ all = [
 # failing on new releases. Keeping lower bounds loose here means that dependabot
 # can bump versions without having to update the content-hash in the lockfile.
 # This helps prevents merge conflicts when running a batch of dependabot updates.
-ruff = "0.12.4"
+ruff = "0.12.10"
 # Type checking only works with the pydantic.v1 compat module from pydantic v2
 pydantic = "^2"
 

rust/Cargo.toml

@@ -7,7 +7,7 @@ name = "synapse"
 version = "0.1.0"
 
 edition = "2021"
-rust-version = "1.81.0"
+rust-version = "1.82.0"
 
 [lib]
 name = "synapse"

rust/benches/evaluator.rs

@@ -61,6 +61,7 @@ fn bench_match_exact(b: &mut Bencher) {
         vec![],
         false,
         false,
+        false,
     )
     .unwrap();
 
@@ -71,10 +72,10 @@ fn bench_match_exact(b: &mut Bencher) {
         },
     ));
 
-    let matched = eval.match_condition(&condition, None, None).unwrap();
+    let matched = eval.match_condition(&condition, None, None, None).unwrap();
     assert!(matched, "Didn't match");
 
-    b.iter(|| eval.match_condition(&condition, None, None).unwrap());
+    b.iter(|| eval.match_condition(&condition, None, None, None).unwrap());
 }
 
 #[bench]
@@ -107,6 +108,7 @@ fn bench_match_word(b: &mut Bencher) {
         vec![],
         false,
         false,
+        false,
     )
     .unwrap();
 
@@ -117,10 +119,10 @@ fn bench_match_word(b: &mut Bencher) {
         },
     ));
 
-    let matched = eval.match_condition(&condition, None, None).unwrap();
+    let matched = eval.match_condition(&condition, None, None, None).unwrap();
     assert!(matched, "Didn't match");
 
-    b.iter(|| eval.match_condition(&condition, None, None).unwrap());
+    b.iter(|| eval.match_condition(&condition, None, None, None).unwrap());
 }
 
 #[bench]
@@ -153,6 +155,7 @@ fn bench_match_word_miss(b: &mut Bencher) {
         vec![],
         false,
         false,
+        false,
     )
     .unwrap();
 
@@ -163,10 +166,10 @@ fn bench_match_word_miss(b: &mut Bencher) {
         },
     ));
 
-    let matched = eval.match_condition(&condition, None, None).unwrap();
+    let matched = eval.match_condition(&condition, None, None, None).unwrap();
     assert!(!matched, "Didn't match");
 
-    b.iter(|| eval.match_condition(&condition, None, None).unwrap());
+    b.iter(|| eval.match_condition(&condition, None, None, None).unwrap());
 }
 
 #[bench]
@@ -199,6 +202,7 @@ fn bench_eval_message(b: &mut Bencher) {
         vec![],
         false,
         false,
+        false,
     )
     .unwrap();
 
@@ -210,7 +214,8 @@ fn bench_eval_message(b: &mut Bencher) {
         false,
         false,
         false,
+        false,
     );
 
-    b.iter(|| eval.run(&rules, Some("bob"), Some("person")));
+    b.iter(|| eval.run(&rules, Some("bob"), Some("person"), None));
 }

rust/src/events/internal_metadata.rs

@@ -54,6 +54,7 @@ enum EventInternalMetadataData {
     RecheckRedaction(bool),
     SoftFailed(bool),
     ProactivelySend(bool),
+    PolicyServerSpammy(bool),
     Redacted(bool),
     TxnId(Box<str>),
     TokenId(i64),
@@ -96,6 +97,13 @@ impl EventInternalMetadataData {
                     .to_owned()
                     .into_any(),
             ),
+            EventInternalMetadataData::PolicyServerSpammy(o) => (
+                pyo3::intern!(py, "policy_server_spammy"),
+                o.into_pyobject(py)
+                    .unwrap_infallible()
+                    .to_owned()
+                    .into_any(),
+            ),
             EventInternalMetadataData::Redacted(o) => (
                 pyo3::intern!(py, "redacted"),
                 o.into_pyobject(py)
@@ -155,6 +163,11 @@ impl EventInternalMetadataData {
                     .extract()
                     .with_context(|| format!("'{key_str}' has invalid type"))?,
             ),
+            "policy_server_spammy" => EventInternalMetadataData::PolicyServerSpammy(
+                value
+                    .extract()
+                    .with_context(|| format!("'{key_str}' has invalid type"))?,
+            ),
             "redacted" => EventInternalMetadataData::Redacted(
                 value
                     .extract()
@@ -427,6 +440,17 @@ impl EventInternalMetadata {
         set_property!(self, ProactivelySend, obj);
     }
 
+    #[getter]
+    fn get_policy_server_spammy(&self) -> PyResult<bool> {
+        Ok(get_property_opt!(self, PolicyServerSpammy)
+            .copied()
+            .unwrap_or(false))
+    }
+    #[setter]
+    fn set_policy_server_spammy(&mut self, obj: bool) {
+        set_property!(self, PolicyServerSpammy, obj);
+    }
+
     #[getter]
     fn get_redacted(&self) -> PyResult<bool> {
         let bool = get_property!(self, Redacted)?;

rust/src/push/base_rules.rs

@@ -289,6 +289,29 @@ pub const BASE_APPEND_CONTENT_RULES: &[PushRule] = &[PushRule {
     default_enabled: true,
 }];
 
+pub const BASE_APPEND_POSTCONTENT_RULES: &[PushRule] = &[
+    PushRule {
+        rule_id: Cow::Borrowed("global/postcontent/.io.element.msc4306.rule.unsubscribed_thread"),
+        priority_class: 6,
+        conditions: Cow::Borrowed(&[Condition::Known(
+            KnownCondition::Msc4306ThreadSubscription { subscribed: false },
+        )]),
+        actions: Cow::Borrowed(&[]),
+        default: true,
+        default_enabled: true,
+    },
+    PushRule {
+        rule_id: Cow::Borrowed("global/postcontent/.io.element.msc4306.rule.subscribed_thread"),
+        priority_class: 6,
+        conditions: Cow::Borrowed(&[Condition::Known(
+            KnownCondition::Msc4306ThreadSubscription { subscribed: true },
+        )]),
+        actions: Cow::Borrowed(&[Action::Notify, SOUND_ACTION]),
+        default: true,
+        default_enabled: true,
+    },
+];
+
 pub const BASE_APPEND_UNDERRIDE_RULES: &[PushRule] = &[
     PushRule {
         rule_id: Cow::Borrowed("global/underride/.m.rule.call"),
@@ -706,6 +729,7 @@ lazy_static! {
             .iter()
             .chain(BASE_APPEND_OVERRIDE_RULES.iter())
             .chain(BASE_APPEND_CONTENT_RULES.iter())
+            .chain(BASE_APPEND_POSTCONTENT_RULES.iter())
             .chain(BASE_APPEND_UNDERRIDE_RULES.iter())
             .map(|rule| { (&*rule.rule_id, rule) })
             .collect();

rust/src/push/evaluator.rs

@@ -106,8 +106,11 @@ pub struct PushRuleEvaluator {
     /// flag as MSC1767 (extensible events core).
     msc3931_enabled: bool,
 
-    // If MSC4210 (remove legacy mentions) is enabled.
+    /// If MSC4210 (remove legacy mentions) is enabled.
     msc4210_enabled: bool,
+
+    /// If MSC4306 (thread subscriptions) is enabled.
+    msc4306_enabled: bool,
 }
 
 #[pymethods]
@@ -126,6 +129,7 @@ impl PushRuleEvaluator {
         room_version_feature_flags,
         msc3931_enabled,
         msc4210_enabled,
+        msc4306_enabled,
     ))]
     pub fn py_new(
         flattened_keys: BTreeMap<String, JsonValue>,
@@ -138,6 +142,7 @@ impl PushRuleEvaluator {
         room_version_feature_flags: Vec<String>,
         msc3931_enabled: bool,
         msc4210_enabled: bool,
+        msc4306_enabled: bool,
     ) -> Result<Self, Error> {
         let body = match flattened_keys.get("content.body") {
             Some(JsonValue::Value(SimpleJsonValue::Str(s))) => s.clone().into_owned(),
@@ -156,6 +161,7 @@ impl PushRuleEvaluator {
             room_version_feature_flags,
             msc3931_enabled,
             msc4210_enabled,
+            msc4306_enabled,
         })
     }
 
@@ -167,12 +173,19 @@ impl PushRuleEvaluator {
     ///
     /// Returns the set of actions, if any, that match (filtering out any
     /// `dont_notify` and `coalesce` actions).
-    #[pyo3(signature = (push_rules, user_id=None, display_name=None))]
+    ///
+    /// msc4306_thread_subscription_state: (Only populated if MSC4306 is enabled)
+    /// The thread subscription state corresponding to the thread containing this event.
+    /// - `None` if the event is not in a thread, or if MSC4306 is disabled.
+    /// - `Some(true)` if the event is in a thread and the user has a subscription for that thread
+    /// - `Some(false)` if the event is in a thread and the user does NOT have a subscription for that thread
+    #[pyo3(signature = (push_rules, user_id=None, display_name=None, msc4306_thread_subscription_state=None))]
     pub fn run(
         &self,
         push_rules: &FilteredPushRules,
         user_id: Option<&str>,
         display_name: Option<&str>,
+        msc4306_thread_subscription_state: Option<bool>,
     ) -> Vec<Action> {
         'outer: for (push_rule, enabled) in push_rules.iter() {
             if !enabled {
@@ -204,7 +217,12 @@ impl PushRuleEvaluator {
                     Condition::Known(KnownCondition::RoomVersionSupports { feature: _ }),
                 );
 
-                match self.match_condition(condition, user_id, display_name) {
+                match self.match_condition(
+                    condition,
+                    user_id,
+                    display_name,
+                    msc4306_thread_subscription_state,
+                ) {
                     Ok(true) => {}
                     Ok(false) => continue 'outer,
                     Err(err) => {
@@ -237,14 +255,20 @@ impl PushRuleEvaluator {
     }
 
     /// Check if the given condition matches.
-    #[pyo3(signature = (condition, user_id=None, display_name=None))]
+    #[pyo3(signature = (condition, user_id=None, display_name=None, msc4306_thread_subscription_state=None))]
     fn matches(
         &self,
         condition: Condition,
         user_id: Option<&str>,
         display_name: Option<&str>,
+        msc4306_thread_subscription_state: Option<bool>,
     ) -> bool {
-        match self.match_condition(&condition, user_id, display_name) {
+        match self.match_condition(
+            &condition,
+            user_id,
+            display_name,
+            msc4306_thread_subscription_state,
+        ) {
             Ok(true) => true,
             Ok(false) => false,
             Err(err) => {
@@ -262,6 +286,7 @@ impl PushRuleEvaluator {
         condition: &Condition,
         user_id: Option<&str>,
         display_name: Option<&str>,
+        msc4306_thread_subscription_state: Option<bool>,
     ) -> Result<bool, Error> {
         let known_condition = match condition {
             Condition::Known(known) => known,
@@ -393,6 +418,13 @@ impl PushRuleEvaluator {
                         && self.room_version_feature_flags.contains(&flag)
                 }
             }
+            KnownCondition::Msc4306ThreadSubscription { subscribed } => {
+                if !self.msc4306_enabled {
+                    false
+                } else {
+                    msc4306_thread_subscription_state == Some(*subscribed)
+                }
+            }
         };
 
         Ok(result)
@@ -536,10 +568,11 @@ fn push_rule_evaluator() {
         vec![],
         true,
         false,
+        false,
     )
     .unwrap();
 
-    let result = evaluator.run(&FilteredPushRules::default(), None, Some("bob"));
+    let result = evaluator.run(&FilteredPushRules::default(), None, Some("bob"), None);
     assert_eq!(result.len(), 3);
 }
 
@@ -566,6 +599,7 @@ fn test_requires_room_version_supports_condition() {
         flags,
         true,
         false,
+        false,
     )
     .unwrap();
 
@@ -575,6 +609,7 @@ fn test_requires_room_version_supports_condition() {
         &FilteredPushRules::default(),
         Some("@bob:example.org"),
         None,
+        None,
     );
     assert_eq!(result.len(), 3);
 
@@ -593,7 +628,17 @@ fn test_requires_room_version_supports_condition() {
     };
     let rules = PushRules::new(vec![custom_rule]);
     result = evaluator.run(
-        &FilteredPushRules::py_new(rules, BTreeMap::new(), true, false, true, false, false),
+        &FilteredPushRules::py_new(
+            rules,
+            BTreeMap::new(),
+            true,
+            false,
+            true,
+            false,
+            false,
+            false,
+        ),
+        None,
         None,
         None,
     );

rust/src/push/mod.rs

@@ -369,6 +369,10 @@ pub enum KnownCondition {
     RoomVersionSupports {
         feature: Cow<'static, str>,
     },
+    #[serde(rename = "io.element.msc4306.thread_subscription")]
+    Msc4306ThreadSubscription {
+        subscribed: bool,
+    },
 }
 
 impl<'source> IntoPyObject<'source> for Condition {
@@ -523,6 +527,7 @@ impl PushRules {
             .chain(base_rules::BASE_APPEND_OVERRIDE_RULES.iter())
             .chain(self.content.iter())
             .chain(base_rules::BASE_APPEND_CONTENT_RULES.iter())
+            .chain(base_rules::BASE_APPEND_POSTCONTENT_RULES.iter())
             .chain(self.room.iter())
             .chain(self.sender.iter())
             .chain(self.underride.iter())
@@ -547,11 +552,13 @@ pub struct FilteredPushRules {
     msc3664_enabled: bool,
     msc4028_push_encrypted_events: bool,
     msc4210_enabled: bool,
+    msc4306_enabled: bool,
 }
 
 #[pymethods]
 impl FilteredPushRules {
     #[new]
+    #[allow(clippy::too_many_arguments)]
     pub fn py_new(
         push_rules: PushRules,
         enabled_map: BTreeMap<String, bool>,
@@ -560,6 +567,7 @@ impl FilteredPushRules {
         msc3664_enabled: bool,
         msc4028_push_encrypted_events: bool,
         msc4210_enabled: bool,
+        msc4306_enabled: bool,
     ) -> Self {
         Self {
             push_rules,
@@ -569,6 +577,7 @@ impl FilteredPushRules {
             msc3664_enabled,
             msc4028_push_encrypted_events,
             msc4210_enabled,
+            msc4306_enabled,
         }
     }
 
@@ -619,6 +628,10 @@ impl FilteredPushRules {
                     return false;
                 }
 
+                if !self.msc4306_enabled && rule.rule_id.contains("/.io.element.msc4306.rule.") {
+                    return false;
+                }
+
                 true
             })
             .map(|r| {

schema/synapse-config.schema.yaml

@@ -1,5 +1,5 @@
 $schema: https://element-hq.github.io/synapse/latest/schema/v1/meta.schema.json
-$id: https://element-hq.github.io/synapse/schema/synapse/v1.135/synapse-config.schema.json
+$id: https://element-hq.github.io/synapse/schema/synapse/v1.138/synapse-config.schema.json
 type: object
 properties:
   modules:
@@ -629,6 +629,70 @@ properties:
         password: mypassword
         ssh_priv_key_path: CONFDIR/id_rsa
         ssh_pub_key_path: CONFDIR/id_rsa.pub
+  http_proxy:
+    type: ["string", "null"]
+    description: >-
+      Proxy server to use for HTTP requests.
+
+      For more details, see the [forward proxy documentation](../../setup/forward_proxy.md).
+    examples:
+      - "http://USERNAME:PASSWORD@10.0.1.1:8080/"
+  https_proxy:
+    type: ["string", "null"]
+    description: >-
+      Proxy server to use for HTTPS requests.
+
+      For more details, see the [forward proxy documentation](../../setup/forward_proxy.md).
+    examples:
+      - "http://USERNAME:PASSWORD@proxy.example.com:8080/"
+  no_proxy_hosts:
+    type: array
+    description: >-
+      List of hosts, IP addresses, or IP ranges in CIDR format which should not use the
+      proxy. Synapse will directly connect to these hosts.
+
+      For more details, see the [forward proxy documentation](../../setup/forward_proxy.md).
+    examples:
+      - - master.hostname.example.com
+        - 10.1.0.0/16
+        - 172.30.0.0/16
+  matrix_authentication_service:
+    type: object
+    description: >-
+      The `matrix_authentication_service` setting configures integration with
+      [Matrix Authentication Service (MAS)](https://github.com/element-hq/matrix-authentication-service).
+    properties:
+      enabled:
+        type: boolean
+        description: >-
+          Whether or not to enable the MAS integration. If this is set to
+          `false`, Synapse will use its legacy internal authentication API.
+        default: false
+
+      endpoint:
+        type: string
+        format: uri
+        description: >-
+          The URL where Synapse can reach MAS. This *must* have the `discovery`
+          and `oauth` resources mounted.
+        default: http://localhost:8080
+
+      secret:
+        type: ["string", "null"]
+        description: >-
+          A shared secret that will be used to authenticate requests from and to MAS.
+
+      secret_path:
+        type: ["string", "null"]
+        description: >-
+          Alternative to `secret`, reading the shared secret from a file.
+          The file should be a plain text file, containing only the secret.
+          Synapse reads the secret from the given file once at startup.
+
+    examples:
+      - enabled: true
+        secret: someverysecuresecret
+        endpoint: http://localhost:8080
   dummy_events_threshold:
     type: integer
     description: >-
@@ -2201,6 +2265,17 @@ properties:
     examples:
       - per_second: 2.0
         burst_count: 20.0
+  rc_room_creation:
+    $ref: "#/$defs/rc"
+    description: >-
+      Sets rate limits for how often users are able to create rooms.
+    default:
+      per_user:
+        per_second: 0.016
+        burst_count: 10.0
+    examples:
+      - per_second: 1.0
+        burst_count: 5.0
   federation_rr_transactions_per_room_per_second:
     type: integer
     description: >-
@@ -2340,8 +2415,15 @@ properties:
       A list of media upload limits defining how much data a given user can
       upload in a given time period.
 
+      These limits are applied in addition to the `max_upload_size` limit above
+      (which applies to individual uploads).
+
 
       An empty list means no limits are applied.
+
+
+      These settings can be overridden using the `get_media_upload_limits_for_user`
+      module API [callback](../../modules/media_repository_callbacks.md#get_media_upload_limits_for_user).
     default: []
     items:
       time_period:

scripts-dev/complement.sh

@@ -230,6 +230,7 @@ test_packages=(
     ./tests/msc3967
     ./tests/msc4140
     ./tests/msc4155
+    ./tests/msc4306
 )
 
 # Enable dirty runs, so tests will reuse the same container where possible.

scripts-dev/gen_config_documentation.py

@@ -473,6 +473,10 @@ def section(prop: str, values: dict) -> str:
 
 
 def main() -> None:
+    # For Windows: reconfigure the terminal to be UTF-8 for `print()` calls.
+    if sys.platform == "win32":
+        sys.stdout.reconfigure(encoding="utf-8")
+
     def usage(err_msg: str) -> int:
         script_name = (sys.argv[:1] or ["__main__.py"])[0]
         print(err_msg, file=sys.stderr)
@@ -485,7 +489,10 @@ def main() -> None:
             exit(usage("Too many arguments."))
         if not (filepath := (sys.argv[1:] or [""])[0]):
             exit(usage("No schema file provided."))
-        with open(filepath) as f:
+        with open(filepath, "r", encoding="utf-8") as f:
+            # Note: Windows requires that we specify the encoding otherwise it uses
+            # things like CP-1251, which can cause explosions.
+            # See https://github.com/yaml/pyyaml/issues/123 for more info.
             return yaml.safe_load(f)
 
     schema = read_json_file_arg()

scripts-dev/mypy_synapse_plugin.py

@@ -23,28 +23,207 @@
 can crop up, e.g the cache descriptors.
 """
 
-from typing import Callable, Optional, Tuple, Type, Union
+import enum
+from typing import Callable, Mapping, Optional, Tuple, Type, Union
 
+import attr
 import mypy.types
 from mypy.erasetype import remove_instance_last_known_values
 from mypy.errorcodes import ErrorCode
-from mypy.nodes import ARG_NAMED_OPT, TempNode, Var
-from mypy.plugin import FunctionSigContext, MethodSigContext, Plugin
+from mypy.nodes import ARG_NAMED_OPT, ListExpr, NameExpr, TempNode, TupleExpr, Var
+from mypy.plugin import (
+    ClassDefContext,
+    Context,
+    FunctionLike,
+    FunctionSigContext,
+    MethodSigContext,
+    MypyFile,
+    Plugin,
+)
 from mypy.typeops import bind_self
 from mypy.types import (
     AnyType,
     CallableType,
     Instance,
     NoneType,
+    Options,
     TupleType,
     TypeAliasType,
     TypeVarType,
     UninhabitedType,
     UnionType,
 )
+from mypy_zope import plugin as mypy_zope_plugin
+from pydantic.mypy import plugin as mypy_pydantic_plugin
+
+PROMETHEUS_METRIC_MISSING_SERVER_NAME_LABEL = ErrorCode(
+    "missing-server-name-label",
+    "`SERVER_NAME_LABEL` required in metric",
+    category="per-homeserver-tenant-metrics",
+)
+
+PROMETHEUS_METRIC_MISSING_FROM_LIST_TO_CHECK = ErrorCode(
+    "metric-type-missing-from-list",
+    "Every Prometheus metric type must be included in the `prometheus_metric_fullname_to_label_arg_map`.",
+    category="per-homeserver-tenant-metrics",
+)
+
+PREFER_SYNAPSE_CLOCK_CALL_WHEN_RUNNING = ErrorCode(
+    "prefer-synapse-clock-call-when-running",
+    "`synapse.util.Clock.call_when_running` should be used instead of `reactor.callWhenRunning`",
+    category="synapse-reactor-clock",
+)
+
+PREFER_SYNAPSE_CLOCK_ADD_SYSTEM_EVENT_TRIGGER = ErrorCode(
+    "prefer-synapse-clock-add-system-event-trigger",
+    "`synapse.util.Clock.add_system_event_trigger` should be used instead of `reactor.addSystemEventTrigger`",
+    category="synapse-reactor-clock",
+)
+
+
+class Sentinel(enum.Enum):
+    # defining a sentinel in this way allows mypy to correctly handle the
+    # type of a dictionary lookup and subsequent type narrowing.
+    UNSET_SENTINEL = object()
+
+
+@attr.s(auto_attribs=True)
+class ArgLocation:
+    keyword_name: str
+    """
+    The keyword argument name for this argument
+    """
+    position: int
+    """
+    The 0-based positional index of this argument
+    """
+
+
+prometheus_metric_fullname_to_label_arg_map: Mapping[str, Optional[ArgLocation]] = {
+    # `Collector` subclasses:
+    "prometheus_client.metrics.MetricWrapperBase": ArgLocation("labelnames", 2),
+    "prometheus_client.metrics.Counter": ArgLocation("labelnames", 2),
+    "prometheus_client.metrics.Histogram": ArgLocation("labelnames", 2),
+    "prometheus_client.metrics.Gauge": ArgLocation("labelnames", 2),
+    "prometheus_client.metrics.Summary": ArgLocation("labelnames", 2),
+    "prometheus_client.metrics.Info": ArgLocation("labelnames", 2),
+    "prometheus_client.metrics.Enum": ArgLocation("labelnames", 2),
+    "synapse.metrics.LaterGauge": ArgLocation("labelnames", 2),
+    "synapse.metrics.InFlightGauge": ArgLocation("labels", 2),
+    "synapse.metrics.GaugeBucketCollector": ArgLocation("labelnames", 2),
+    "prometheus_client.registry.Collector": None,
+    "prometheus_client.registry._EmptyCollector": None,
+    "prometheus_client.registry.CollectorRegistry": None,
+    "prometheus_client.process_collector.ProcessCollector": None,
+    "prometheus_client.platform_collector.PlatformCollector": None,
+    "prometheus_client.gc_collector.GCCollector": None,
+    "synapse.metrics._gc.GCCounts": None,
+    "synapse.metrics._gc.PyPyGCStats": None,
+    "synapse.metrics._reactor_metrics.ReactorLastSeenMetric": None,
+    "synapse.metrics.CPUMetrics": None,
+    "synapse.metrics.jemalloc.JemallocCollector": None,
+    "synapse.util.metrics.DynamicCollectorRegistry": None,
+    "synapse.metrics.background_process_metrics._Collector": None,
+    #
+    # `Metric` subclasses:
+    "prometheus_client.metrics_core.Metric": None,
+    "prometheus_client.metrics_core.UnknownMetricFamily": ArgLocation("labels", 3),
+    "prometheus_client.metrics_core.CounterMetricFamily": ArgLocation("labels", 3),
+    "prometheus_client.metrics_core.GaugeMetricFamily": ArgLocation("labels", 3),
+    "prometheus_client.metrics_core.SummaryMetricFamily": ArgLocation("labels", 3),
+    "prometheus_client.metrics_core.InfoMetricFamily": ArgLocation("labels", 3),
+    "prometheus_client.metrics_core.HistogramMetricFamily": ArgLocation("labels", 3),
+    "prometheus_client.metrics_core.GaugeHistogramMetricFamily": ArgLocation(
+        "labels", 4
+    ),
+    "prometheus_client.metrics_core.StateSetMetricFamily": ArgLocation("labels", 3),
+    "synapse.metrics.GaugeHistogramMetricFamilyWithLabels": ArgLocation(
+        "labelnames", 4
+    ),
+}
+"""
+Map from the fullname of the Prometheus `Metric`/`Collector` classes to the keyword
+argument name and positional index of the label names. This map is useful because
+different metrics have different signatures for passing in label names and we just need
+to know where to look.
+
+This map should include any metrics that we collect with Prometheus. Which corresponds
+to anything that inherits from `prometheus_client.registry.Collector`
+(`synapse.metrics._types.Collector`) or `prometheus_client.metrics_core.Metric`. The
+exhaustiveness of this list is enforced by `analyze_prometheus_metric_classes`.
+
+The entries with `None` always fail the lint because they don't have a `labelnames`
+argument (therefore, no `SERVER_NAME_LABEL`), but we include them here so that people
+can notice and manually allow via a type ignore comment as the source of truth
+should be in the source code.
+"""
+
+# Unbound at this point because we don't know the mypy version yet.
+# This is set in the `plugin(...)` function below.
+MypyPydanticPluginClass: Type[Plugin]
+MypyZopePluginClass: Type[Plugin]
 
 
 class SynapsePlugin(Plugin):
+    def __init__(self, options: Options):
+        super().__init__(options)
+        self.mypy_pydantic_plugin = MypyPydanticPluginClass(options)
+        self.mypy_zope_plugin = MypyZopePluginClass(options)
+
+    def set_modules(self, modules: dict[str, MypyFile]) -> None:
+        """
+        This is called by mypy internals. We have to override this to ensure it's also
+        called for any other plugins that we're manually handling.
+
+        Here is how mypy describes it:
+
+        > [`self._modules`] can't be set in `__init__` because it is executed too soon
+        > in `build.py`. Therefore, `build.py` *must* set it later before graph processing
+        > starts by calling `set_modules()`.
+        """
+        super().set_modules(modules)
+        self.mypy_pydantic_plugin.set_modules(modules)
+        self.mypy_zope_plugin.set_modules(modules)
+
+    def get_base_class_hook(
+        self, fullname: str
+    ) -> Optional[Callable[[ClassDefContext], None]]:
+        def _get_base_class_hook(ctx: ClassDefContext) -> None:
+            # Run any `get_base_class_hook` checks from other plugins first.
+            #
+            # Unfortunately, because mypy only chooses the first plugin that returns a
+            # non-None value (known-limitation, c.f.
+            # https://github.com/python/mypy/issues/19524), we workaround this by
+            # putting our custom plugin first in the plugin order and then calling the
+            # other plugin's hook manually followed by our own checks.
+            if callback := self.mypy_pydantic_plugin.get_base_class_hook(fullname):
+                callback(ctx)
+            if callback := self.mypy_zope_plugin.get_base_class_hook(fullname):
+                callback(ctx)
+
+            # Now run our own checks
+            analyze_prometheus_metric_classes(ctx)
+
+        return _get_base_class_hook
+
+    def get_function_signature_hook(
+        self, fullname: str
+    ) -> Optional[Callable[[FunctionSigContext], FunctionLike]]:
+        # Strip off the unique identifier for classes that are dynamically created inside
+        # functions. ex. `synapse.metrics.jemalloc.JemallocCollector@185` (this is the line
+        # number)
+        if "@" in fullname:
+            fullname = fullname.split("@", 1)[0]
+
+        # Look for any Prometheus metrics to make sure they have the `SERVER_NAME_LABEL`
+        # label.
+        if fullname in prometheus_metric_fullname_to_label_arg_map.keys():
+            # Because it's difficult to determine the `fullname` of the function in the
+            # callback, let's just pass it in while we have it.
+            return lambda ctx: check_prometheus_metric_instantiation(ctx, fullname)
+
+        return None
+
     def get_method_signature_hook(
         self, fullname: str
     ) -> Optional[Callable[[MethodSigContext], CallableType]]:
@@ -62,9 +241,228 @@ class SynapsePlugin(Plugin):
         ):
             return check_is_cacheable_wrapper
 
+        if fullname in (
+            "twisted.internet.interfaces.IReactorCore.callWhenRunning",
+            "synapse.types.ISynapseThreadlessReactor.callWhenRunning",
+            "synapse.types.ISynapseReactor.callWhenRunning",
+        ):
+            return check_call_when_running
+
+        if fullname in (
+            "twisted.internet.interfaces.IReactorCore.addSystemEventTrigger",
+            "synapse.types.ISynapseThreadlessReactor.addSystemEventTrigger",
+            "synapse.types.ISynapseReactor.addSystemEventTrigger",
+        ):
+            return check_add_system_event_trigger
+
         return None
 
 
+def check_call_when_running(ctx: MethodSigContext) -> CallableType:
+    """
+    Ensure that the `reactor.callWhenRunning` callsites aren't used.
+
+    `synapse.util.Clock.call_when_running` should always be used instead of
+    `reactor.callWhenRunning`.
+
+    Since `reactor.callWhenRunning` is a reactor callback, the callback will start out
+    with the sentinel logcontext. `synapse.util.Clock` starts a default logcontext as we
+    want to know which server the logs came from.
+
+    Args:
+        ctx: The `FunctionSigContext` from mypy.
+    """
+    signature: CallableType = ctx.default_signature
+    ctx.api.fail(
+        (
+            "Expected all `reactor.callWhenRunning` calls to use `synapse.util.Clock.call_when_running` instead. "
+            "This is so all Synapse code runs with a logcontext as we want to know which server the logs came from."
+        ),
+        ctx.context,
+        code=PREFER_SYNAPSE_CLOCK_CALL_WHEN_RUNNING,
+    )
+
+    return signature
+
+
+def check_add_system_event_trigger(ctx: MethodSigContext) -> CallableType:
+    """
+    Ensure that the `reactor.addSystemEventTrigger` callsites aren't used.
+
+    `synapse.util.Clock.add_system_event_trigger` should always be used instead of
+    `reactor.addSystemEventTrigger`.
+
+    Since `reactor.addSystemEventTrigger` is a reactor callback, the callback will start out
+    with the sentinel logcontext. `synapse.util.Clock` starts a default logcontext as we
+    want to know which server the logs came from.
+
+    Args:
+        ctx: The `FunctionSigContext` from mypy.
+    """
+    signature: CallableType = ctx.default_signature
+    ctx.api.fail(
+        (
+            "Expected all `reactor.addSystemEventTrigger` calls to use `synapse.util.Clock.add_system_event_trigger` instead. "
+            "This is so all Synapse code runs with a logcontext as we want to know which server the logs came from."
+        ),
+        ctx.context,
+        code=PREFER_SYNAPSE_CLOCK_ADD_SYSTEM_EVENT_TRIGGER,
+    )
+
+    return signature
+
+
+def analyze_prometheus_metric_classes(ctx: ClassDefContext) -> None:
+    """
+    Cross-check the list of Prometheus metric classes against the
+    `prometheus_metric_fullname_to_label_arg_map` to ensure the list is exhaustive and
+    up-to-date.
+    """
+
+    fullname = ctx.cls.fullname
+    # Strip off the unique identifier for classes that are dynamically created inside
+    # functions. ex. `synapse.metrics.jemalloc.JemallocCollector@185` (this is the line
+    # number)
+    if "@" in fullname:
+        fullname = fullname.split("@", 1)[0]
+
+    if any(
+        ancestor_type.fullname
+        in (
+            # All of the Prometheus metric classes inherit from the `Collector`.
+            "prometheus_client.registry.Collector",
+            "synapse.metrics._types.Collector",
+            # And custom metrics that inherit from `Metric`.
+            "prometheus_client.metrics_core.Metric",
+        )
+        for ancestor_type in ctx.cls.info.mro
+    ):
+        if fullname not in prometheus_metric_fullname_to_label_arg_map:
+            ctx.api.fail(
+                f"Expected {fullname} to be in `prometheus_metric_fullname_to_label_arg_map`, "
+                f"but it was not found. This is a problem with our custom mypy plugin. "
+                f"Please add it to the map.",
+                Context(),
+                code=PROMETHEUS_METRIC_MISSING_FROM_LIST_TO_CHECK,
+            )
+
+
+def check_prometheus_metric_instantiation(
+    ctx: FunctionSigContext, fullname: str
+) -> CallableType:
+    """
+    Ensure that the `prometheus_client` metrics include the `SERVER_NAME_LABEL` label
+    when instantiated.
+
+    This is important because we support multiple Synapse instances running in the same
+    process, where all metrics share a single global `REGISTRY`. The `server_name` label
+    ensures metrics are correctly separated by homeserver.
+
+    There are also some metrics that apply at the process level, such as CPU usage,
+    Python garbage collection, and Twisted reactor tick time, which shouldn't have the
+    `SERVER_NAME_LABEL`. In those cases, use a type ignore comment to disable the
+    check, e.g. `# type: ignore[missing-server-name-label]`.
+
+    Args:
+        ctx: The `FunctionSigContext` from mypy.
+        fullname: The fully qualified name of the function being called,
+            e.g. `"prometheus_client.metrics.Counter"`
+    """
+    # The true signature, this isn't being modified so this is what will be returned.
+    signature = ctx.default_signature
+
+    # Find where the label names argument is in the function signature.
+    arg_location = prometheus_metric_fullname_to_label_arg_map.get(
+        fullname, Sentinel.UNSET_SENTINEL
+    )
+    assert arg_location is not Sentinel.UNSET_SENTINEL, (
+        f"Expected to find {fullname} in `prometheus_metric_fullname_to_label_arg_map`, "
+        f"but it was not found. This is a problem with our custom mypy plugin. "
+        f"Please add it to the map. Context: {ctx.context}"
+    )
+    # People should be using `# type: ignore[missing-server-name-label]` for
+    # process-level metrics that should not have the `SERVER_NAME_LABEL`.
+    if arg_location is None:
+        ctx.api.fail(
+            f"{signature.name} does not have a `labelnames`/`labels` argument "
+            "(if this is untrue, update `prometheus_metric_fullname_to_label_arg_map` "
+            "in our custom mypy plugin) and should probably have a type ignore comment, "
+            "e.g. `# type: ignore[missing-server-name-label]`. The reason we don't "
+            "automatically ignore this is the source of truth should be in the source code.",
+            ctx.context,
+            code=PROMETHEUS_METRIC_MISSING_SERVER_NAME_LABEL,
+        )
+        return signature
+
+    # Sanity check the arguments are still as expected in this version of
+    # `prometheus_client`. ex. `Counter(name, documentation, labelnames, ...)`
+    #
+    # `signature.arg_names` should be: ["name", "documentation", "labelnames", ...]
+    if (
+        len(signature.arg_names) < (arg_location.position + 1)
+        or signature.arg_names[arg_location.position] != arg_location.keyword_name
+    ):
+        ctx.api.fail(
+            f"Expected argument number {arg_location.position + 1} of {signature.name} to be `labelnames`/`labels`, "
+            f"but got {signature.arg_names[arg_location.position]}",
+            ctx.context,
+        )
+        return signature
+
+    # Ensure mypy is passing the correct number of arguments because we are doing some
+    # dirty indexing into `ctx.args` later on.
+    assert len(ctx.args) == len(signature.arg_names), (
+        f"Expected the list of arguments in the {signature.name} signature ({len(signature.arg_names)})"
+        f"to match the number of arguments from the function signature context ({len(ctx.args)})"
+    )
+
+    # Check if the `labelnames` argument includes `SERVER_NAME_LABEL`
+    #
+    # `ctx.args` should look like this:
+    # ```
+    # [
+    #     [StrExpr("name")],
+    #     [StrExpr("documentation")],
+    #     [ListExpr([StrExpr("label1"), StrExpr("label2")])]
+    #     ...
+    # ]
+    # ```
+    labelnames_arg_expression = (
+        ctx.args[arg_location.position][0]
+        if len(ctx.args[arg_location.position]) > 0
+        else None
+    )
+    if isinstance(labelnames_arg_expression, (ListExpr, TupleExpr)):
+        # Check if the `labelnames` argument includes the `server_name` label (`SERVER_NAME_LABEL`).
+        for labelname_expression in labelnames_arg_expression.items:
+            if (
+                isinstance(labelname_expression, NameExpr)
+                and labelname_expression.fullname == "synapse.metrics.SERVER_NAME_LABEL"
+            ):
+                # Found the `SERVER_NAME_LABEL`, all good!
+                break
+        else:
+            ctx.api.fail(
+                f"Expected {signature.name} to include `SERVER_NAME_LABEL` in the list of labels. "
+                "If this is a process-level metric (vs homeserver-level), use a type ignore comment "
+                "to disable this check.",
+                ctx.context,
+                code=PROMETHEUS_METRIC_MISSING_SERVER_NAME_LABEL,
+            )
+    else:
+        ctx.api.fail(
+            f"Expected the `labelnames` argument of {signature.name} to be a list of label names "
+            f"(including `SERVER_NAME_LABEL`), but got {labelnames_arg_expression}. "
+            "If this is a process-level metric (vs homeserver-level), use a type ignore comment "
+            "to disable this check.",
+            ctx.context,
+            code=PROMETHEUS_METRIC_MISSING_SERVER_NAME_LABEL,
+        )
+        return signature
+
+    return signature
+
+
 def _get_true_return_type(signature: CallableType) -> mypy.types.Type:
     """
     Get the "final" return type of a callable which might return an Awaitable/Deferred.
@@ -372,10 +770,13 @@ def is_cacheable(
 
 
 def plugin(version: str) -> Type[SynapsePlugin]:
+    global MypyPydanticPluginClass, MypyZopePluginClass
     # This is the entry point of the plugin, and lets us deal with the fact
     # that the mypy plugin interface is *not* stable by looking at the version
     # string.
     #
     # However, since we pin the version of mypy Synapse uses in CI, we don't
     # really care.
+    MypyPydanticPluginClass = mypy_pydantic_plugin(version)
+    MypyZopePluginClass = mypy_zope_plugin(version)
     return SynapsePlugin

scripts-dev/sign_json.py

@@ -30,7 +30,7 @@ from signedjson.sign import sign_json
 
 from synapse.api.room_versions import KNOWN_ROOM_VERSIONS
 from synapse.crypto.event_signing import add_hashes_and_signatures
-from synapse.util import json_encoder
+from synapse.util.json import json_encoder
 
 
 def main() -> None:

synapse/__init__.py

@@ -45,16 +45,6 @@ if py_version < (3, 9):
 
 # Allow using the asyncio reactor via env var.
 if strtobool(os.environ.get("SYNAPSE_ASYNC_IO_REACTOR", "0")):
-    from incremental import Version
-
-    import twisted
-
-    # We need a bugfix that is included in Twisted 21.2.0:
-    # https://twistedmatrix.com/trac/ticket/9787
-    if twisted.version < Version("Twisted", 21, 2, 0):
-        print("Using asyncio reactor requires Twisted>=21.2.0")
-        sys.exit(1)
-
     import asyncio
 
     from twisted.internet import asyncioreactor

synapse/_pydantic_compat.py

@@ -34,9 +34,11 @@ HAS_PYDANTIC_V2: bool = Version(pydantic_version).major == 2
 
 if TYPE_CHECKING or HAS_PYDANTIC_V2:
     from pydantic.v1 import (
+        AnyHttpUrl,
         BaseModel,
         Extra,
         Field,
+        FilePath,
         MissingError,
         PydanticValueError,
         StrictBool,
@@ -55,9 +57,11 @@ if TYPE_CHECKING or HAS_PYDANTIC_V2:
     from pydantic.v1.typing import get_args
 else:
     from pydantic import (
+        AnyHttpUrl,
         BaseModel,
         Extra,
         Field,
+        FilePath,
         MissingError,
         PydanticValueError,
         StrictBool,
@@ -77,6 +81,7 @@ else:
 
 __all__ = (
     "HAS_PYDANTIC_V2",
+    "AnyHttpUrl",
     "BaseModel",
     "constr",
     "conbytes",
@@ -85,6 +90,7 @@ __all__ = (
     "ErrorWrapper",
     "Extra",
     "Field",
+    "FilePath",
     "get_args",
     "MissingError",
     "parse_obj_as",

synapse/_scripts/generate_workers_map.py

@@ -153,9 +153,13 @@ def get_registered_paths_for_default(
     """
 
     hs = MockHomeserver(base_config, worker_app)
+
     # TODO We only do this to avoid an error, but don't need the database etc
     hs.setup()
-    return get_registered_paths_for_hs(hs)
+    registered_paths = get_registered_paths_for_hs(hs)
+    hs.cleanup()
+
+    return registered_paths
 
 
 def elide_http_methods_if_unconflicting(

synapse/_scripts/register_new_matrix_user.py

@@ -30,6 +30,7 @@ from typing import Any, Callable, Dict, Optional
 
 import requests
 import yaml
+from typing_extensions import Never
 
 _CONFLICTING_SHARED_SECRET_OPTS_ERROR = """\
 Conflicting options 'registration_shared_secret' and 'registration_shared_secret_path'
@@ -40,6 +41,10 @@ _NO_SHARED_SECRET_OPTS_ERROR = """\
 No 'registration_shared_secret' or 'registration_shared_secret_path' defined in config.
 """
 
+_EMPTY_SHARED_SECRET_PATH_OPTS_ERROR = """\
+The secret given via `registration_shared_secret_path` must not be empty.
+"""
+
 _DEFAULT_SERVER_URL = "http://localhost:8008"
 
 
@@ -170,6 +175,12 @@ def register_new_user(
     )
 
 
+def bail(err_msg: str) -> Never:
+    """Prints the given message to stderr and exits."""
+    print(err_msg, file=sys.stderr)
+    sys.exit(1)
+
+
 def main() -> None:
     logging.captureWarnings(True)
 
@@ -262,15 +273,20 @@ def main() -> None:
         assert config is not None
 
         secret = config.get("registration_shared_secret")
+        if not isinstance(secret, (str, type(None))):
+            bail("registration_shared_secret is not a string.")
         secret_file = config.get("registration_shared_secret_path")
-        if secret_file:
-            if secret:
-                print(_CONFLICTING_SHARED_SECRET_OPTS_ERROR, file=sys.stderr)
-                sys.exit(1)
+        if not isinstance(secret_file, (str, type(None))):
+            bail("registration_shared_secret_path is not a string.")
+
+        if not secret and not secret_file:
+            bail(_NO_SHARED_SECRET_OPTS_ERROR)
+        elif secret and secret_file:
+            bail(_CONFLICTING_SHARED_SECRET_OPTS_ERROR)
+        elif not secret and secret_file:
             secret = _read_file(secret_file, "registration_shared_secret_path").strip()
-        if not secret:
-            print(_NO_SHARED_SECRET_OPTS_ERROR, file=sys.stderr)
-            sys.exit(1)
+            if not secret:
+                bail(_EMPTY_SHARED_SECRET_PATH_OPTS_ERROR)
 
     if args.password_file:
         password = _read_file(args.password_file, "password-file").strip()

synapse/_scripts/review_recent_signups.py

@@ -29,19 +29,21 @@ import attr
 
 from synapse.config._base import (
     Config,
+    ConfigError,
     RootConfig,
     find_config_files,
     read_config_files,
 )
 from synapse.config.database import DatabaseConfig
+from synapse.config.server import ServerConfig
 from synapse.storage.database import DatabasePool, LoggingTransaction, make_conn
 from synapse.storage.engines import create_engine
 
 
 class ReviewConfig(RootConfig):
-    "A config class that just pulls out the database config"
+    "A config class that just pulls out the server and database config"
 
-    config_classes = [DatabaseConfig]
+    config_classes = [ServerConfig, DatabaseConfig]
 
 
 @attr.s(auto_attribs=True)
@@ -148,6 +150,10 @@ def main() -> None:
     config_dict = read_config_files(config_files)
     config.parse_config_dict(config_dict, "", "")
 
+    server_name = config.server.server_name
+    if not isinstance(server_name, str):
+        raise ConfigError("Must be a string", ("server_name",))
+
     since_ms = time.time() * 1000 - Config.parse_duration(config_args.since)
     exclude_users_with_email = config_args.exclude_emails
     exclude_users_with_appservice = config_args.exclude_app_service
@@ -159,7 +165,12 @@ def main() -> None:
 
     engine = create_engine(database_config.config)
 
-    with make_conn(database_config, engine, "review_recent_signups") as db_conn:
+    with make_conn(
+        db_config=database_config,
+        engine=engine,
+        default_txn_name="review_recent_signups",
+        server_name=server_name,
+    ) as db_conn:
         # This generates a type of Cursor, not LoggingTransaction.
         user_infos = get_recent_users(
             db_conn.cursor(),

synapse/_scripts/synapse_port_db.py

@@ -54,11 +54,11 @@ from twisted.internet import defer, reactor as reactor_
 from synapse.config.database import DatabaseConnectionConfig
 from synapse.config.homeserver import HomeServerConfig
 from synapse.logging.context import (
-    LoggingContext,
     make_deferred_yieldable,
     run_in_background,
 )
-from synapse.notifier import ReplicationNotifier
+from synapse.server import HomeServer
+from synapse.storage import DataStore
 from synapse.storage.database import DatabasePool, LoggingTransaction, make_conn
 from synapse.storage.databases.main import FilteringWorkerStore
 from synapse.storage.databases.main.account_data import AccountDataWorkerStore
@@ -98,7 +98,7 @@ from synapse.storage.databases.state.bg_updates import StateBackgroundUpdateStor
 from synapse.storage.engines import create_engine
 from synapse.storage.prepare_database import prepare_database
 from synapse.types import ISynapseReactor
-from synapse.util import SYNAPSE_VERSION, Clock
+from synapse.util import SYNAPSE_VERSION
 
 # Cast safety: Twisted does some naughty magic which replaces the
 # twisted.internet.reactor module with a Reactor instance at runtime.
@@ -317,27 +317,16 @@ class Store(
         )
 
 
-class MockHomeserver:
+class MockHomeserver(HomeServer):
+    DATASTORE_CLASS = DataStore
+
     def __init__(self, config: HomeServerConfig):
-        self.clock = Clock(reactor)
-        self.config = config
-        self.hostname = config.server.server_name
-        self.version_string = SYNAPSE_VERSION
-
-    def get_clock(self) -> Clock:
-        return self.clock
-
-    def get_reactor(self) -> ISynapseReactor:
-        return reactor
-
-    def get_instance_name(self) -> str:
-        return "master"
-
-    def should_send_federation(self) -> bool:
-        return False
-
-    def get_replication_notifier(self) -> ReplicationNotifier:
-        return ReplicationNotifier()
+        super().__init__(
+            hostname=config.server.server_name,
+            config=config,
+            reactor=reactor,
+            version_string=f"Synapse/{SYNAPSE_VERSION}",
+        )
 
 
 class Porter:
@@ -346,12 +335,12 @@ class Porter:
         sqlite_config: Dict[str, Any],
         progress: "Progress",
         batch_size: int,
-        hs_config: HomeServerConfig,
+        hs: HomeServer,
     ):
         self.sqlite_config = sqlite_config
         self.progress = progress
         self.batch_size = batch_size
-        self.hs_config = hs_config
+        self.hs = hs
 
     async def setup_table(self, table: str) -> Tuple[str, int, int, int, int]:
         if table in APPEND_ONLY_TABLES:
@@ -671,15 +660,28 @@ class Porter:
 
         engine = create_engine(db_config.config)
 
-        hs = MockHomeserver(self.hs_config)
+        server_name = self.hs.hostname
 
-        with make_conn(db_config, engine, "portdb") as db_conn:
+        with make_conn(
+            db_config=db_config,
+            engine=engine,
+            default_txn_name="portdb",
+            server_name=server_name,
+        ) as db_conn:
             engine.check_database(
                 db_conn, allow_outdated_version=allow_outdated_version
             )
-            prepare_database(db_conn, engine, config=self.hs_config)
+            prepare_database(db_conn, engine, config=self.hs.config)
             # Type safety: ignore that we're using Mock homeservers here.
-            store = Store(DatabasePool(hs, db_config, engine), db_conn, hs)  # type: ignore[arg-type]
+            store = Store(
+                DatabasePool(
+                    self.hs,
+                    db_config,
+                    engine,
+                ),
+                db_conn,
+                self.hs,
+            )
             db_conn.commit()
 
         return store
@@ -776,7 +778,7 @@ class Porter:
                 return
 
             self.postgres_store = self.build_db_store(
-                self.hs_config.database.get_single_database()
+                self.hs.config.database.get_single_database()
             )
 
             await self.remove_ignored_background_updates_from_database()
@@ -1565,6 +1567,8 @@ def main() -> None:
     config = HomeServerConfig()
     config.parse_config_dict(hs_config, "", "")
 
+    hs = MockHomeserver(config)
+
     def start(stdscr: Optional["curses.window"] = None) -> None:
         progress: Progress
         if stdscr:
@@ -1576,15 +1580,14 @@ def main() -> None:
             sqlite_config=sqlite_config,
             progress=progress,
             batch_size=args.batch_size,
-            hs_config=config,
+            hs=hs,
         )
 
         @defer.inlineCallbacks
         def run() -> Generator["defer.Deferred[Any]", Any, None]:
-            with LoggingContext("synapse_port_db_run"):
-                yield defer.ensureDeferred(porter.run())
+            yield defer.ensureDeferred(porter.run())
 
-        reactor.callWhenRunning(run)
+        hs.get_clock().call_when_running(run)
 
         reactor.run()
 

synapse/_scripts/update_synapse_database.py

@@ -53,6 +53,7 @@ class MockHomeserver(HomeServer):
 
 
 def run_background_updates(hs: HomeServer) -> None:
+    server_name = hs.hostname
     main = hs.get_datastores().main
     state = hs.get_datastores().state
 
@@ -66,10 +67,14 @@ def run_background_updates(hs: HomeServer) -> None:
     def run() -> None:
         # Apply all background updates on the database.
         defer.ensureDeferred(
-            run_as_background_process("background_updates", run_background_updates)
+            run_as_background_process(
+                "background_updates",
+                server_name,
+                run_background_updates,
+            )
         )
 
-    reactor.callWhenRunning(run)
+    hs.get_clock().call_when_running(run)
 
     reactor.run()
 
@@ -115,6 +120,13 @@ def main() -> None:
     # DB.
     hs.setup()
 
+    # This will cause all of the relevant storage classes to be instantiated and call
+    # `register_background_update_handler(...)`,
+    # `register_background_index_update(...)`,
+    # `register_background_validate_constraint(...)`, etc so they are available to use
+    # if we are asked to run those background updates.
+    hs.get_storage_controllers()
+
     if args.run_background_updates:
         run_background_updates(hs)
 

synapse/api/auth/__init__.py

@@ -20,10 +20,13 @@
 #
 from typing import TYPE_CHECKING, Optional, Protocol, Tuple
 
+from prometheus_client import Histogram
+
 from twisted.web.server import Request
 
 from synapse.appservice import ApplicationService
 from synapse.http.site import SynapseRequest
+from synapse.metrics import SERVER_NAME_LABEL
 from synapse.types import Requester
 
 if TYPE_CHECKING:
@@ -33,6 +36,13 @@ if TYPE_CHECKING:
 GUEST_DEVICE_ID = "guest_device"
 
 
+introspection_response_timer = Histogram(
+    "synapse_api_auth_delegated_introspection_response",
+    "Time taken to get a response for an introspection request",
+    labelnames=["code", SERVER_NAME_LABEL],
+)
+
+
 class Auth(Protocol):
     """The interface that an auth provider must implement."""
 

synapse/api/auth/mas.py

@@ -0,0 +1,438 @@
+#
+# This file is licensed under the Affero General Public License (AGPL) version 3.
+#
+# Copyright (C) 2025 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>.
+#
+#
+import logging
+from typing import TYPE_CHECKING, Optional, Set
+from urllib.parse import urlencode
+
+from synapse._pydantic_compat import (
+    BaseModel,
+    Extra,
+    StrictBool,
+    StrictInt,
+    StrictStr,
+    ValidationError,
+)
+from synapse.api.auth.base import BaseAuth
+from synapse.api.errors import (
+    AuthError,
+    HttpResponseException,
+    InvalidClientTokenError,
+    SynapseError,
+    UnrecognizedRequestError,
+)
+from synapse.http.site import SynapseRequest
+from synapse.logging.context import PreserveLoggingContext
+from synapse.logging.opentracing import (
+    active_span,
+    force_tracing,
+    inject_request_headers,
+    start_active_span,
+)
+from synapse.metrics import SERVER_NAME_LABEL
+from synapse.synapse_rust.http_client import HttpClient
+from synapse.types import JsonDict, Requester, UserID, create_requester
+from synapse.util.caches.cached_call import RetryOnExceptionCachedCall
+from synapse.util.caches.response_cache import ResponseCache, ResponseCacheContext
+from synapse.util.json import json_decoder
+
+from . import introspection_response_timer
+
+if TYPE_CHECKING:
+    from synapse.rest.admin.experimental_features import ExperimentalFeature
+    from synapse.server import HomeServer
+
+logger = logging.getLogger(__name__)
+
+# Scope as defined by MSC2967
+# https://github.com/matrix-org/matrix-spec-proposals/pull/2967
+UNSTABLE_SCOPE_MATRIX_API = "urn:matrix:org.matrix.msc2967.client:api:*"
+UNSTABLE_SCOPE_MATRIX_DEVICE_PREFIX = "urn:matrix:org.matrix.msc2967.client:device:"
+STABLE_SCOPE_MATRIX_API = "urn:matrix:client:api:*"
+STABLE_SCOPE_MATRIX_DEVICE_PREFIX = "urn:matrix:client:device:"
+
+
+class ServerMetadata(BaseModel):
+    class Config:
+        extra = Extra.allow
+
+    issuer: StrictStr
+    account_management_uri: StrictStr
+
+
+class IntrospectionResponse(BaseModel):
+    retrieved_at_ms: StrictInt
+    active: StrictBool
+    scope: Optional[StrictStr]
+    username: Optional[StrictStr]
+    sub: Optional[StrictStr]
+    device_id: Optional[StrictStr]
+    expires_in: Optional[StrictInt]
+
+    class Config:
+        extra = Extra.allow
+
+    def get_scope_set(self) -> set[str]:
+        if not self.scope:
+            return set()
+
+        return {token for token in self.scope.split(" ") if token}
+
+    def is_active(self, now_ms: int) -> bool:
+        if not self.active:
+            return False
+
+        # Compatibility tokens don't expire and don't have an 'expires_in' field
+        if self.expires_in is None:
+            return True
+
+        absolute_expiry_ms = self.expires_in * 1000 + self.retrieved_at_ms
+        return now_ms < absolute_expiry_ms
+
+
+class MasDelegatedAuth(BaseAuth):
+    def __init__(self, hs: "HomeServer"):
+        super().__init__(hs)
+
+        self.server_name = hs.hostname
+        self._clock = hs.get_clock()
+        self._config = hs.config.mas
+
+        self._http_client = hs.get_proxied_http_client()
+        self._rust_http_client = HttpClient(
+            reactor=hs.get_reactor(),
+            user_agent=self._http_client.user_agent.decode("utf8"),
+        )
+        self._server_metadata = RetryOnExceptionCachedCall[ServerMetadata](
+            self._load_metadata
+        )
+        self._force_tracing_for_users = hs.config.tracing.force_tracing_for_users
+
+        # # Token Introspection Cache
+        # This remembers what users/devices are represented by which access tokens,
+        # in order to reduce overall system load:
+        # - on Synapse (as requests are relatively expensive)
+        # - on the network
+        # - on MAS
+        #
+        # Since there is no invalidation mechanism currently,
+        # the entries expire after 2 minutes.
+        # This does mean tokens can be treated as valid by Synapse
+        # for longer than reality.
+        #
+        # Ideally, tokens should logically be invalidated in the following circumstances:
+        # - If a session logout happens.
+        #   In this case, MAS will delete the device within Synapse
+        #   anyway and this is good enough as an invalidation.
+        # - If the client refreshes their token in MAS.
+        #   In this case, the device still exists and it's not the end of the world for
+        #   the old access token to continue working for a short time.
+        self._introspection_cache: ResponseCache[str] = ResponseCache(
+            clock=self._clock,
+            name="mas_token_introspection",
+            server_name=self.server_name,
+            timeout_ms=120_000,
+            # don't log because the keys are access tokens
+            enable_logging=False,
+        )
+
+    @property
+    def _metadata_url(self) -> str:
+        return f"{self._config.endpoint.rstrip('/')}/.well-known/openid-configuration"
+
+    @property
+    def _introspection_endpoint(self) -> str:
+        return f"{self._config.endpoint.rstrip('/')}/oauth2/introspect"
+
+    async def _load_metadata(self) -> ServerMetadata:
+        response = await self._http_client.get_json(self._metadata_url)
+        metadata = ServerMetadata(**response)
+        return metadata
+
+    async def issuer(self) -> str:
+        metadata = await self._server_metadata.get()
+        return metadata.issuer
+
+    async def account_management_url(self) -> str:
+        metadata = await self._server_metadata.get()
+        return metadata.account_management_uri
+
+    async def auth_metadata(self) -> JsonDict:
+        metadata = await self._server_metadata.get()
+        return metadata.dict()
+
+    def is_request_using_the_shared_secret(self, request: SynapseRequest) -> bool:
+        """
+        Check if the request is using the shared secret.
+
+        Args:
+            request: The request to check.
+
+        Returns:
+            True if the request is using the shared secret, False otherwise.
+        """
+        access_token = self.get_access_token_from_request(request)
+        shared_secret = self._config.secret()
+        if not shared_secret:
+            return False
+
+        return access_token == shared_secret
+
+    async def _introspect_token(
+        self, token: str, cache_context: ResponseCacheContext[str]
+    ) -> IntrospectionResponse:
+        """
+        Send a token to the introspection endpoint and returns the introspection response
+
+        Parameters:
+            token: The token to introspect
+
+        Raises:
+            HttpResponseException: If the introspection endpoint returns a non-2xx response
+            ValueError: If the introspection endpoint returns an invalid JSON response
+            JSONDecodeError: If the introspection endpoint returns a non-JSON response
+            Exception: If the HTTP request fails
+
+        Returns:
+            The introspection response
+        """
+
+        # By default, we shouldn't cache the result unless we know it's valid
+        cache_context.should_cache = False
+        raw_headers: dict[str, str] = {
+            "Content-Type": "application/x-www-form-urlencoded",
+            "Accept": "application/json",
+            "Authorization": f"Bearer {self._config.secret()}",
+            # Tell MAS that we support reading the device ID as an explicit
+            # value, not encoded in the scope. This is supported by MAS 0.15+
+            "X-MAS-Supports-Device-Id": "1",
+        }
+
+        args = {"token": token, "token_type_hint": "access_token"}
+        body = urlencode(args, True)
+
+        # Do the actual request
+
+        logger.debug("Fetching token from MAS")
+        start_time = self._clock.time()
+        try:
+            with start_active_span("mas-introspect-token"):
+                inject_request_headers(raw_headers)
+                with PreserveLoggingContext():
+                    resp_body = await self._rust_http_client.post(
+                        url=self._introspection_endpoint,
+                        response_limit=1 * 1024 * 1024,
+                        headers=raw_headers,
+                        request_body=body,
+                    )
+        except HttpResponseException as e:
+            end_time = self._clock.time()
+            introspection_response_timer.labels(
+                code=e.code, **{SERVER_NAME_LABEL: self.server_name}
+            ).observe(end_time - start_time)
+            raise
+        except Exception:
+            end_time = self._clock.time()
+            introspection_response_timer.labels(
+                code="ERR", **{SERVER_NAME_LABEL: self.server_name}
+            ).observe(end_time - start_time)
+            raise
+
+        logger.debug("Fetched token from MAS")
+
+        end_time = self._clock.time()
+        introspection_response_timer.labels(
+            code=200, **{SERVER_NAME_LABEL: self.server_name}
+        ).observe(end_time - start_time)
+
+        raw_response = json_decoder.decode(resp_body.decode("utf-8"))
+        try:
+            response = IntrospectionResponse(
+                retrieved_at_ms=self._clock.time_msec(),
+                **raw_response,
+            )
+        except ValidationError as e:
+            raise ValueError(
+                "The introspection endpoint returned an invalid JSON response"
+            ) from e
+
+        # We had a valid response, so we can cache it
+        cache_context.should_cache = True
+        return response
+
+    async def is_server_admin(self, requester: Requester) -> bool:
+        return "urn:synapse:admin:*" in requester.scope
+
+    async def get_user_by_req(
+        self,
+        request: SynapseRequest,
+        allow_guest: bool = False,
+        allow_expired: bool = False,
+        allow_locked: bool = False,
+    ) -> Requester:
+        parent_span = active_span()
+        with start_active_span("get_user_by_req"):
+            access_token = self.get_access_token_from_request(request)
+
+            requester = await self.get_appservice_user(request, access_token)
+            if not requester:
+                requester = await self.get_user_by_access_token(
+                    token=access_token,
+                    allow_expired=allow_expired,
+                )
+
+            await self._record_request(request, requester)
+
+            request.requester = requester
+
+            if parent_span:
+                if requester.authenticated_entity in self._force_tracing_for_users:
+                    # request tracing is enabled for this user, so we need to force it
+                    # tracing on for the parent span (which will be the servlet span).
+                    #
+                    # It's too late for the get_user_by_req span to inherit the setting,
+                    # so we also force it on for that.
+                    force_tracing()
+                    force_tracing(parent_span)
+                parent_span.set_tag(
+                    "authenticated_entity", requester.authenticated_entity
+                )
+                parent_span.set_tag("user_id", requester.user.to_string())
+                if requester.device_id is not None:
+                    parent_span.set_tag("device_id", requester.device_id)
+                if requester.app_service is not None:
+                    parent_span.set_tag("appservice_id", requester.app_service.id)
+            return requester
+
+    async def get_user_by_access_token(
+        self,
+        token: str,
+        allow_expired: bool = False,
+    ) -> Requester:
+        try:
+            introspection_result = await self._introspection_cache.wrap(
+                token, self._introspect_token, token, cache_context=True
+            )
+        except Exception:
+            logger.exception("Failed to introspect token")
+            raise SynapseError(503, "Unable to introspect the access token")
+
+        logger.debug("Introspection result: %r", introspection_result)
+        if not introspection_result.is_active(self._clock.time_msec()):
+            raise InvalidClientTokenError("Token is not active")
+
+        # Let's look at the scope
+        scope = introspection_result.get_scope_set()
+
+        # Determine type of user based on presence of particular scopes
+        if (
+            UNSTABLE_SCOPE_MATRIX_API not in scope
+            and STABLE_SCOPE_MATRIX_API not in scope
+        ):
+            raise InvalidClientTokenError(
+                "Token doesn't grant access to the Matrix C-S API"
+            )
+
+        if introspection_result.username is None:
+            raise AuthError(
+                500,
+                "Invalid username claim in the introspection result",
+            )
+
+        user_id = UserID(
+            localpart=introspection_result.username,
+            domain=self.server_name,
+        )
+
+        # Try to find a user from the username claim
+        user_info = await self.store.get_user_by_id(user_id=user_id.to_string())
+        if user_info is None:
+            raise AuthError(
+                500,
+                "User not found",
+            )
+
+        # MAS will give us the device ID as an explicit value for *compatibility* sessions
+        # If present, we get it from here, if not we get it in the scope for next-gen sessions
+        device_id = introspection_result.device_id
+        if device_id is None:
+            # Find device_ids in scope
+            # We only allow a single device_id in the scope, so we find them all in the
+            # scope list, and raise if there are more than one. The OIDC server should be
+            # the one enforcing valid scopes, so we raise a 500 if we find an invalid scope.
+            device_ids: Set[str] = set()
+            for tok in scope:
+                if tok.startswith(UNSTABLE_SCOPE_MATRIX_DEVICE_PREFIX):
+                    device_ids.add(tok[len(UNSTABLE_SCOPE_MATRIX_DEVICE_PREFIX) :])
+                elif tok.startswith(STABLE_SCOPE_MATRIX_DEVICE_PREFIX):
+                    device_ids.add(tok[len(STABLE_SCOPE_MATRIX_DEVICE_PREFIX) :])
+
+            if len(device_ids) > 1:
+                raise AuthError(
+                    500,
+                    "Multiple device IDs in scope",
+                )
+
+            device_id = next(iter(device_ids), None)
+
+        if device_id is not None:
+            # Sanity check the device_id
+            if len(device_id) > 255 or len(device_id) < 1:
+                raise AuthError(
+                    500,
+                    "Invalid device ID in introspection result",
+                )
+
+            # Make sure the device exists. This helps with introspection cache
+            # invalidation: if we log out, the device gets deleted by MAS
+            device = await self.store.get_device(
+                user_id=user_id.to_string(),
+                device_id=device_id,
+            )
+            if device is None:
+                # Invalidate the introspection cache, the device was deleted
+                self._introspection_cache.unset(token)
+                raise InvalidClientTokenError("Token is not active")
+
+        return create_requester(
+            user_id=user_id,
+            device_id=device_id,
+            scope=scope,
+        )
+
+    async def get_user_by_req_experimental_feature(
+        self,
+        request: SynapseRequest,
+        feature: "ExperimentalFeature",
+        allow_guest: bool = False,
+        allow_expired: bool = False,
+        allow_locked: bool = False,
+    ) -> Requester:
+        try:
+            requester = await self.get_user_by_req(
+                request,
+                allow_guest=allow_guest,
+                allow_expired=allow_expired,
+                allow_locked=allow_locked,
+            )
+            if await self.store.is_feature_enabled(requester.user.to_string(), feature):
+                return requester
+
+            raise UnrecognizedRequestError(code=404)
+        except (AuthError, InvalidClientTokenError):
+            if feature.is_globally_enabled(self.hs.config):
+                # If its globally enabled then return the auth error
+                raise
+
+            raise UnrecognizedRequestError(code=404)

synapse/api/auth/msc3861_delegated.py

@@ -20,7 +20,7 @@
 #
 import logging
 from dataclasses import dataclass
-from typing import TYPE_CHECKING, Any, Callable, Dict, List, Optional
+from typing import TYPE_CHECKING, Any, Callable, Dict, List, Optional, Set
 from urllib.parse import urlencode
 
 from authlib.oauth2 import ClientAuth
@@ -28,14 +28,12 @@ from authlib.oauth2.auth import encode_client_secret_basic, encode_client_secret
 from authlib.oauth2.rfc7523 import ClientSecretJWT, PrivateKeyJWT, private_key_jwt_sign
 from authlib.oauth2.rfc7662 import IntrospectionToken
 from authlib.oidc.discovery import OpenIDProviderMetadata, get_well_known_url
-from prometheus_client import Histogram
 
 from synapse.api.auth.base import BaseAuth
 from synapse.api.errors import (
     AuthError,
     HttpResponseException,
     InvalidClientTokenError,
-    OAuthInsufficientScopeError,
     SynapseError,
     UnrecognizedRequestError,
 )
@@ -47,11 +45,14 @@ from synapse.logging.opentracing import (
     inject_request_headers,
     start_active_span,
 )
+from synapse.metrics import SERVER_NAME_LABEL
 from synapse.synapse_rust.http_client import HttpClient
 from synapse.types import Requester, UserID, create_requester
-from synapse.util import json_decoder
 from synapse.util.caches.cached_call import RetryOnExceptionCachedCall
 from synapse.util.caches.response_cache import ResponseCache, ResponseCacheContext
+from synapse.util.json import json_decoder
+
+from . import introspection_response_timer
 
 if TYPE_CHECKING:
     from synapse.rest.admin.experimental_features import ExperimentalFeature
@@ -59,18 +60,12 @@ if TYPE_CHECKING:
 
 logger = logging.getLogger(__name__)
 
-introspection_response_timer = Histogram(
-    "synapse_api_auth_delegated_introspection_response",
-    "Time taken to get a response for an introspection request",
-    ["code"],
-)
-
-
 # Scope as defined by MSC2967
 # https://github.com/matrix-org/matrix-spec-proposals/pull/2967
-SCOPE_MATRIX_API = "urn:matrix:org.matrix.msc2967.client:api:*"
-SCOPE_MATRIX_GUEST = "urn:matrix:org.matrix.msc2967.client:api:guest"
-SCOPE_MATRIX_DEVICE_PREFIX = "urn:matrix:org.matrix.msc2967.client:device:"
+UNSTABLE_SCOPE_MATRIX_API = "urn:matrix:org.matrix.msc2967.client:api:*"
+UNSTABLE_SCOPE_MATRIX_DEVICE_PREFIX = "urn:matrix:org.matrix.msc2967.client:device:"
+STABLE_SCOPE_MATRIX_API = "urn:matrix:client:api:*"
+STABLE_SCOPE_MATRIX_DEVICE_PREFIX = "urn:matrix:client:device:"
 
 # Scope which allows access to the Synapse admin API
 SCOPE_SYNAPSE_ADMIN = "urn:synapse:admin:*"
@@ -341,17 +336,23 @@ class MSC3861DelegatedAuth(BaseAuth):
                     )
         except HttpResponseException as e:
             end_time = self._clock.time()
-            introspection_response_timer.labels(e.code).observe(end_time - start_time)
+            introspection_response_timer.labels(
+                code=e.code, **{SERVER_NAME_LABEL: self.server_name}
+            ).observe(end_time - start_time)
             raise
         except Exception:
             end_time = self._clock.time()
-            introspection_response_timer.labels("ERR").observe(end_time - start_time)
+            introspection_response_timer.labels(
+                code="ERR", **{SERVER_NAME_LABEL: self.server_name}
+            ).observe(end_time - start_time)
             raise
 
         logger.debug("Fetched token from MAS")
 
         end_time = self._clock.time()
-        introspection_response_timer.labels(200).observe(end_time - start_time)
+        introspection_response_timer.labels(
+            code=200, **{SERVER_NAME_LABEL: self.server_name}
+        ).observe(end_time - start_time)
 
         resp = json_decoder.decode(resp_body.decode("utf-8"))
 
@@ -443,9 +444,6 @@ class MSC3861DelegatedAuth(BaseAuth):
         if not self._is_access_token_the_admin_token(access_token):
             await self._record_request(request, requester)
 
-        if not allow_guest and requester.is_guest:
-            raise OAuthInsufficientScopeError([SCOPE_MATRIX_API])
-
         request.requester = requester
 
         return requester
@@ -527,10 +525,11 @@ class MSC3861DelegatedAuth(BaseAuth):
         scope: List[str] = introspection_result.get_scope_list()
 
         # Determine type of user based on presence of particular scopes
-        has_user_scope = SCOPE_MATRIX_API in scope
-        has_guest_scope = SCOPE_MATRIX_GUEST in scope
+        has_user_scope = (
+            UNSTABLE_SCOPE_MATRIX_API in scope or STABLE_SCOPE_MATRIX_API in scope
+        )
 
-        if not has_user_scope and not has_guest_scope:
+        if not has_user_scope:
             raise InvalidClientTokenError("No scope in token granting user rights")
 
         # Match via the sub claim
@@ -578,11 +577,12 @@ class MSC3861DelegatedAuth(BaseAuth):
             # We only allow a single device_id in the scope, so we find them all in the
             # scope list, and raise if there are more than one. The OIDC server should be
             # the one enforcing valid scopes, so we raise a 500 if we find an invalid scope.
-            device_ids = [
-                tok[len(SCOPE_MATRIX_DEVICE_PREFIX) :]
-                for tok in scope
-                if tok.startswith(SCOPE_MATRIX_DEVICE_PREFIX)
-            ]
+            device_ids: Set[str] = set()
+            for tok in scope:
+                if tok.startswith(UNSTABLE_SCOPE_MATRIX_DEVICE_PREFIX):
+                    device_ids.add(tok[len(UNSTABLE_SCOPE_MATRIX_DEVICE_PREFIX) :])
+                elif tok.startswith(STABLE_SCOPE_MATRIX_DEVICE_PREFIX):
+                    device_ids.add(tok[len(STABLE_SCOPE_MATRIX_DEVICE_PREFIX) :])
 
             if len(device_ids) > 1:
                 raise AuthError(
@@ -590,7 +590,7 @@ class MSC3861DelegatedAuth(BaseAuth):
                     "Multiple device IDs in scope",
                 )
 
-            device_id = device_ids[0] if device_ids else None
+            device_id = next(iter(device_ids), None)
 
         if device_id is not None:
             # Sanity check the device_id
@@ -616,5 +616,4 @@ class MSC3861DelegatedAuth(BaseAuth):
             user_id=user_id,
             device_id=device_id,
             scope=scope,
-            is_guest=(has_guest_scope and not has_user_scope),
         )

synapse/api/errors.py

@@ -30,7 +30,7 @@ from typing import Any, Dict, List, Optional, Union
 
 from twisted.web import http
 
-from synapse.util import json_decoder
+from synapse.util.json import json_decoder
 
 if typing.TYPE_CHECKING:
     from synapse.config.homeserver import HomeServerConfig
@@ -140,6 +140,12 @@ class Codes(str, Enum):
     # Part of MSC4155
     INVITE_BLOCKED = "ORG.MATRIX.MSC4155.M_INVITE_BLOCKED"
 
+    # Part of MSC4306: Thread Subscriptions
+    MSC4306_CONFLICTING_UNSUBSCRIPTION = (
+        "IO.ELEMENT.MSC4306.M_CONFLICTING_UNSUBSCRIPTION"
+    )
+    MSC4306_NOT_IN_THREAD = "IO.ELEMENT.MSC4306.M_NOT_IN_THREAD"
+
 
 class CodeMessageException(RuntimeError):
     """An exception with integer code, a message string attributes and optional headers.

synapse/api/ratelimiting.py

@@ -26,7 +26,7 @@ from synapse.api.errors import LimitExceededError
 from synapse.config.ratelimiting import RatelimitSettings
 from synapse.storage.databases.main import DataStore
 from synapse.types import Requester
-from synapse.util import Clock
+from synapse.util.clock import Clock
 
 if TYPE_CHECKING:
     # To avoid circular imports:

synapse/api/urls.py

@@ -22,6 +22,7 @@
 """Contains the URL paths to prefix various aspects of the server with."""
 
 import hmac
+import urllib.parse
 from hashlib import sha256
 from typing import Optional
 from urllib.parse import urlencode, urljoin
@@ -96,11 +97,21 @@ class LoginSSORedirectURIBuilder:
         serialized_query_parameters = urlencode({"redirectUrl": client_redirect_url})
 
         if idp_id:
+            # Since this is a user-controlled string, make it safe to include in a URL path.
+            url_encoded_idp_id = urllib.parse.quote(
+                idp_id,
+                # Since this defaults to `safe="/"`, we have to override it. We're
+                # working with an individual URL path parameter so there shouldn't be
+                # any slashes in it which could change the request path.
+                safe="",
+                encoding="utf8",
+            )
+
             resultant_url = urljoin(
                 # We have to add a trailing slash to the base URL to ensure that the
                 # last path segment is not stripped away when joining with another path.
                 f"{base_url}/",
-                f"{idp_id}?{serialized_query_parameters}",
+                f"{url_encoded_idp_id}?{serialized_query_parameters}",
             )
         else:
             resultant_url = f"{base_url}?{serialized_query_parameters}"

synapse/app/_base.py

@@ -72,10 +72,10 @@ from synapse.events.auto_accept_invites import InviteAutoAccepter
 from synapse.events.presence_router import load_legacy_presence_router
 from synapse.handlers.auth import load_legacy_password_auth_providers
 from synapse.http.site import SynapseSite
-from synapse.logging.context import PreserveLoggingContext
+from synapse.logging.context import LoggingContext, PreserveLoggingContext
 from synapse.logging.opentracing import init_tracer
 from synapse.metrics import install_gc_manager, register_threadpool
-from synapse.metrics.background_process_metrics import wrap_as_background_process
+from synapse.metrics.background_process_metrics import run_as_background_process
 from synapse.metrics.jemalloc import setup_jemalloc_stats
 from synapse.module_api.callbacks.spamchecker_callbacks import load_legacy_spam_checkers
 from synapse.module_api.callbacks.third_party_event_rules_callbacks import (
@@ -183,25 +183,23 @@ def start_reactor(
         if gc_thresholds:
             gc.set_threshold(*gc_thresholds)
         install_gc_manager()
-        run_command()
 
-    # make sure that we run the reactor with the sentinel log context,
-    # otherwise other PreserveLoggingContext instances will get confused
-    # and complain when they see the logcontext arbitrarily swapping
-    # between the sentinel and `run` logcontexts.
-    #
-    # We also need to drop the logcontext before forking if we're daemonizing,
-    # otherwise the cputime metrics get confused about the per-thread resource usage
-    # appearing to go backwards.
-    with PreserveLoggingContext():
-        if daemonize:
-            assert pid_file is not None
+        # Reset the logging context when we start the reactor (whenever we yield control
+        # to the reactor, the `sentinel` logging context needs to be set so we don't
+        # leak the current logging context and erroneously apply it to the next task the
+        # reactor event loop picks up)
+        with PreserveLoggingContext():
+            run_command()
 
-            if print_pidfile:
-                print(pid_file)
+    if daemonize:
+        assert pid_file is not None
 
-            daemonize_process(pid_file, logger)
-        run()
+        if print_pidfile:
+            print(pid_file)
+
+        daemonize_process(pid_file, logger)
+
+    run()
 
 
 def quit_with_error(error_string: str) -> NoReturn:
@@ -243,7 +241,7 @@ def redirect_stdio_to_logs() -> None:
 
 
 def register_start(
-    cb: Callable[P, Awaitable], *args: P.args, **kwargs: P.kwargs
+    hs: "HomeServer", cb: Callable[P, Awaitable], *args: P.args, **kwargs: P.kwargs
 ) -> None:
     """Register a callback with the reactor, to be called once it is running
 
@@ -280,7 +278,8 @@ def register_start(
             # on as normal.
             os._exit(1)
 
-    reactor.callWhenRunning(lambda: defer.ensureDeferred(wrapper()))
+    clock = hs.get_clock()
+    clock.call_when_running(lambda: defer.ensureDeferred(wrapper()))
 
 
 def listen_metrics(bind_addresses: StrCollection, port: int) -> None:
@@ -512,34 +511,49 @@ async def start(hs: "HomeServer") -> None:
     Args:
         hs: homeserver instance
     """
+    server_name = hs.hostname
     reactor = hs.get_reactor()
 
     # We want to use a separate thread pool for the resolver so that large
     # numbers of DNS requests don't starve out other users of the threadpool.
     resolver_threadpool = ThreadPool(name="gai_resolver")
     resolver_threadpool.start()
-    reactor.addSystemEventTrigger("during", "shutdown", resolver_threadpool.stop)
+    hs.get_clock().add_system_event_trigger(
+        "during", "shutdown", resolver_threadpool.stop
+    )
     reactor.installNameResolver(
         GAIResolver(reactor, getThreadPool=lambda: resolver_threadpool)
     )
 
     # Register the threadpools with our metrics.
-    register_threadpool("default", reactor.getThreadPool())
-    register_threadpool("gai_resolver", resolver_threadpool)
+    register_threadpool(
+        name="default", server_name=server_name, threadpool=reactor.getThreadPool()
+    )
+    register_threadpool(
+        name="gai_resolver", server_name=server_name, threadpool=resolver_threadpool
+    )
 
     # Set up the SIGHUP machinery.
     if hasattr(signal, "SIGHUP"):
 
-        @wrap_as_background_process("sighup")
-        async def handle_sighup(*args: Any, **kwargs: Any) -> None:
-            # Tell systemd our state, if we're using it. This will silently fail if
-            # we're not using systemd.
-            sdnotify(b"RELOADING=1")
+        def handle_sighup(*args: Any, **kwargs: Any) -> "defer.Deferred[None]":
+            async def _handle_sighup(*args: Any, **kwargs: Any) -> None:
+                # Tell systemd our state, if we're using it. This will silently fail if
+                # we're not using systemd.
+                sdnotify(b"RELOADING=1")
 
-            for i, args, kwargs in _sighup_callbacks:
-                i(*args, **kwargs)
+                for i, args, kwargs in _sighup_callbacks:
+                    i(*args, **kwargs)
 
-            sdnotify(b"READY=1")
+                sdnotify(b"READY=1")
+
+            return run_as_background_process(
+                "sighup",
+                server_name,
+                _handle_sighup,
+                *args,
+                **kwargs,
+            )
 
         # We defer running the sighup handlers until next reactor tick. This
         # is so that we're in a sane state, e.g. flushing the logs may fail
@@ -588,18 +602,38 @@ async def start(hs: "HomeServer") -> None:
     hs.get_datastores().main.db_pool.start_profiling()
     hs.get_pusherpool().start()
 
+    def log_shutdown() -> None:
+        with LoggingContext("log_shutdown"):
+            logger.info("Shutting down...")
+
     # Log when we start the shut down process.
-    hs.get_reactor().addSystemEventTrigger(
-        "before", "shutdown", logger.info, "Shutting down..."
-    )
+    hs.get_clock().add_system_event_trigger("before", "shutdown", log_shutdown)
 
     setup_sentry(hs)
     setup_sdnotify(hs)
 
-    # If background tasks are running on the main process or this is the worker in
-    # charge of them, start collecting the phone home stats and shared usage metrics.
+    # Register background tasks required by this server. This must be done
+    # somewhat manually due to the background tasks not being registered
+    # unless handlers are instantiated.
+    #
+    # While we could "start" these before the reactor runs, nothing will happen until
+    # the reactor is running, so we may as well do it here in `start`.
+    #
+    # Additionally, this means we also start them after we daemonize and fork the
+    # process which means we can avoid any potential problems with cputime metrics
+    # getting confused about the per-thread resource usage appearing to go backwards
+    # because we're comparing the resource usage (`rusage`) from the original process to
+    # the forked process.
     if hs.config.worker.run_background_tasks:
+        hs.start_background_tasks()
+
+        # TODO: This should be moved to same pattern we use for other background tasks:
+        # Add to `REQUIRED_ON_BACKGROUND_TASK_STARTUP` and rely on
+        # `start_background_tasks` to start it.
         await hs.get_common_usage_metrics_manager().setup()
+
+        # TODO: This feels like another pattern that should refactored as one of the
+        # `REQUIRED_ON_BACKGROUND_TASK_STARTUP`
         start_phone_stats_home(hs)
 
     # We now freeze all allocated objects in the hopes that (almost)
@@ -688,7 +722,7 @@ def setup_sdnotify(hs: "HomeServer") -> None:
     # we're not using systemd.
     sdnotify(b"READY=1\nMAINPID=%i" % (os.getpid(),))
 
-    hs.get_reactor().addSystemEventTrigger(
+    hs.get_clock().add_system_event_trigger(
         "before", "shutdown", sdnotify, b"STOPPING=1"
     )
 

synapse/app/generic_worker.py

@@ -355,7 +355,10 @@ def start(config_options: List[str]) -> None:
     except Exception as e:
         handle_startup_exception(e)
 
-    register_start(_base.start, hs)
+    async def start() -> None:
+        await _base.start(hs)
+
+    register_start(hs, start)
 
     # redirect stdio to the logs, if configured.
     if not hs.config.logging.no_redirect_stdio:

synapse/app/homeserver.py

@@ -387,7 +387,7 @@ def setup(config_options: List[str]) -> SynapseHomeServer:
 
         hs.get_datastores().main.db_pool.updates.start_doing_background_updates()
 
-    register_start(start)
+    register_start(hs, start)
 
     return hs
 

synapse/app/phone_stats_home.py

@@ -26,7 +26,12 @@ from typing import TYPE_CHECKING, List, Mapping, Sized, Tuple
 
 from prometheus_client import Gauge
 
-from synapse.metrics.background_process_metrics import wrap_as_background_process
+from twisted.internet import defer
+
+from synapse.metrics import SERVER_NAME_LABEL
+from synapse.metrics.background_process_metrics import (
+    run_as_background_process,
+)
 from synapse.types import JsonDict
 from synapse.util.constants import ONE_HOUR_SECONDS, ONE_MINUTE_SECONDS
 
@@ -53,138 +58,158 @@ Phone home stats are sent every 3 hours
 _stats_process: List[Tuple[int, "resource.struct_rusage"]] = []
 
 # Gauges to expose monthly active user control metrics
-current_mau_gauge = Gauge("synapse_admin_mau_current", "Current MAU")
+current_mau_gauge = Gauge(
+    "synapse_admin_mau_current",
+    "Current MAU",
+    labelnames=[SERVER_NAME_LABEL],
+)
 current_mau_by_service_gauge = Gauge(
     "synapse_admin_mau_current_mau_by_service",
     "Current MAU by service",
-    ["app_service"],
+    labelnames=["app_service", SERVER_NAME_LABEL],
+)
+max_mau_gauge = Gauge(
+    "synapse_admin_mau_max",
+    "MAU Limit",
+    labelnames=[SERVER_NAME_LABEL],
 )
-max_mau_gauge = Gauge("synapse_admin_mau_max", "MAU Limit")
 registered_reserved_users_mau_gauge = Gauge(
     "synapse_admin_mau_registered_reserved_users",
     "Registered users with reserved threepids",
+    labelnames=[SERVER_NAME_LABEL],
 )
 
 
-@wrap_as_background_process("phone_stats_home")
-async def phone_stats_home(
+def phone_stats_home(
     hs: "HomeServer",
     stats: JsonDict,
     stats_process: List[Tuple[int, "resource.struct_rusage"]] = _stats_process,
-) -> None:
-    """Collect usage statistics and send them to the configured endpoint.
+) -> "defer.Deferred[None]":
+    server_name = hs.hostname
 
-    Args:
-        hs: the HomeServer object to use for gathering usage data.
-        stats: the dict in which to store the statistics sent to the configured
-            endpoint. Mostly used in tests to figure out the data that is supposed to
-            be sent.
-        stats_process: statistics about resource usage of the process.
-    """
+    async def _phone_stats_home(
+        hs: "HomeServer",
+        stats: JsonDict,
+        stats_process: List[Tuple[int, "resource.struct_rusage"]] = _stats_process,
+    ) -> None:
+        """Collect usage statistics and send them to the configured endpoint.
 
-    logger.info("Gathering stats for reporting")
-    now = int(hs.get_clock().time())
-    # Ensure the homeserver has started.
-    assert hs.start_time is not None
-    uptime = int(now - hs.start_time)
-    if uptime < 0:
-        uptime = 0
+        Args:
+            hs: the HomeServer object to use for gathering usage data.
+            stats: the dict in which to store the statistics sent to the configured
+                endpoint. Mostly used in tests to figure out the data that is supposed to
+                be sent.
+            stats_process: statistics about resource usage of the process.
+        """
 
-    #
-    # Performance statistics. Keep this early in the function to maintain reliability of `test_performance_100` test.
-    #
-    old = stats_process[0]
-    new = (now, resource.getrusage(resource.RUSAGE_SELF))
-    stats_process[0] = new
+        logger.info("Gathering stats for reporting")
+        now = int(hs.get_clock().time())
+        # Ensure the homeserver has started.
+        assert hs.start_time is not None
+        uptime = int(now - hs.start_time)
+        if uptime < 0:
+            uptime = 0
 
-    # Get RSS in bytes
-    stats["memory_rss"] = new[1].ru_maxrss
+        #
+        # Performance statistics. Keep this early in the function to maintain reliability of `test_performance_100` test.
+        #
+        old = stats_process[0]
+        new = (now, resource.getrusage(resource.RUSAGE_SELF))
+        stats_process[0] = new
 
-    # Get CPU time in % of a single core, not % of all cores
-    used_cpu_time = (new[1].ru_utime + new[1].ru_stime) - (
-        old[1].ru_utime + old[1].ru_stime
-    )
-    if used_cpu_time == 0 or new[0] == old[0]:
-        stats["cpu_average"] = 0
-    else:
-        stats["cpu_average"] = math.floor(used_cpu_time / (new[0] - old[0]) * 100)
+        # Get RSS in bytes
+        stats["memory_rss"] = new[1].ru_maxrss
 
-    #
-    # General statistics
-    #
-
-    store = hs.get_datastores().main
-    common_metrics = await hs.get_common_usage_metrics_manager().get_metrics()
-
-    stats["homeserver"] = hs.config.server.server_name
-    stats["server_context"] = hs.config.server.server_context
-    stats["timestamp"] = now
-    stats["uptime_seconds"] = uptime
-    version = sys.version_info
-    stats["python_version"] = "{}.{}.{}".format(
-        version.major, version.minor, version.micro
-    )
-    stats["total_users"] = await store.count_all_users()
-
-    total_nonbridged_users = await store.count_nonbridged_users()
-    stats["total_nonbridged_users"] = total_nonbridged_users
-
-    daily_user_type_results = await store.count_daily_user_type()
-    for name, count in daily_user_type_results.items():
-        stats["daily_user_type_" + name] = count
-
-    room_count = await store.get_room_count()
-    stats["total_room_count"] = room_count
-
-    stats["daily_active_users"] = common_metrics.daily_active_users
-    stats["monthly_active_users"] = await store.count_monthly_users()
-    daily_active_e2ee_rooms = await store.count_daily_active_e2ee_rooms()
-    stats["daily_active_e2ee_rooms"] = daily_active_e2ee_rooms
-    stats["daily_e2ee_messages"] = await store.count_daily_e2ee_messages()
-    daily_sent_e2ee_messages = await store.count_daily_sent_e2ee_messages()
-    stats["daily_sent_e2ee_messages"] = daily_sent_e2ee_messages
-    stats["daily_active_rooms"] = await store.count_daily_active_rooms()
-    stats["daily_messages"] = await store.count_daily_messages()
-    daily_sent_messages = await store.count_daily_sent_messages()
-    stats["daily_sent_messages"] = daily_sent_messages
-
-    r30v2_results = await store.count_r30v2_users()
-    for name, count in r30v2_results.items():
-        stats["r30v2_users_" + name] = count
-
-    stats["cache_factor"] = hs.config.caches.global_factor
-    stats["event_cache_size"] = hs.config.caches.event_cache_size
-
-    #
-    # Database version
-    #
-
-    # This only reports info about the *main* database.
-    stats["database_engine"] = store.db_pool.engine.module.__name__
-    stats["database_server_version"] = store.db_pool.engine.server_version
-
-    #
-    # Logging configuration
-    #
-    synapse_logger = logging.getLogger("synapse")
-    log_level = synapse_logger.getEffectiveLevel()
-    stats["log_level"] = logging.getLevelName(log_level)
-
-    logger.info(
-        "Reporting stats to %s: %s", hs.config.metrics.report_stats_endpoint, stats
-    )
-    try:
-        await hs.get_proxied_http_client().put_json(
-            hs.config.metrics.report_stats_endpoint, stats
+        # Get CPU time in % of a single core, not % of all cores
+        used_cpu_time = (new[1].ru_utime + new[1].ru_stime) - (
+            old[1].ru_utime + old[1].ru_stime
         )
-    except Exception as e:
-        logger.warning("Error reporting stats: %s", e)
+        if used_cpu_time == 0 or new[0] == old[0]:
+            stats["cpu_average"] = 0
+        else:
+            stats["cpu_average"] = math.floor(used_cpu_time / (new[0] - old[0]) * 100)
+
+        #
+        # General statistics
+        #
+
+        store = hs.get_datastores().main
+        common_metrics = await hs.get_common_usage_metrics_manager().get_metrics()
+
+        stats["homeserver"] = hs.config.server.server_name
+        stats["server_context"] = hs.config.server.server_context
+        stats["timestamp"] = now
+        stats["uptime_seconds"] = uptime
+        version = sys.version_info
+        stats["python_version"] = "{}.{}.{}".format(
+            version.major, version.minor, version.micro
+        )
+        stats["total_users"] = await store.count_all_users()
+
+        total_nonbridged_users = await store.count_nonbridged_users()
+        stats["total_nonbridged_users"] = total_nonbridged_users
+
+        daily_user_type_results = await store.count_daily_user_type()
+        for name, count in daily_user_type_results.items():
+            stats["daily_user_type_" + name] = count
+
+        room_count = await store.get_room_count()
+        stats["total_room_count"] = room_count
+
+        stats["daily_active_users"] = common_metrics.daily_active_users
+        stats["monthly_active_users"] = await store.count_monthly_users()
+        daily_active_e2ee_rooms = await store.count_daily_active_e2ee_rooms()
+        stats["daily_active_e2ee_rooms"] = daily_active_e2ee_rooms
+        stats["daily_e2ee_messages"] = await store.count_daily_e2ee_messages()
+        daily_sent_e2ee_messages = await store.count_daily_sent_e2ee_messages()
+        stats["daily_sent_e2ee_messages"] = daily_sent_e2ee_messages
+        stats["daily_active_rooms"] = await store.count_daily_active_rooms()
+        stats["daily_messages"] = await store.count_daily_messages()
+        daily_sent_messages = await store.count_daily_sent_messages()
+        stats["daily_sent_messages"] = daily_sent_messages
+
+        r30v2_results = await store.count_r30v2_users()
+        for name, count in r30v2_results.items():
+            stats["r30v2_users_" + name] = count
+
+        stats["cache_factor"] = hs.config.caches.global_factor
+        stats["event_cache_size"] = hs.config.caches.event_cache_size
+
+        #
+        # Database version
+        #
+
+        # This only reports info about the *main* database.
+        stats["database_engine"] = store.db_pool.engine.module.__name__
+        stats["database_server_version"] = store.db_pool.engine.server_version
+
+        #
+        # Logging configuration
+        #
+        synapse_logger = logging.getLogger("synapse")
+        log_level = synapse_logger.getEffectiveLevel()
+        stats["log_level"] = logging.getLevelName(log_level)
+
+        logger.info(
+            "Reporting stats to %s: %s", hs.config.metrics.report_stats_endpoint, stats
+        )
+        try:
+            await hs.get_proxied_http_client().put_json(
+                hs.config.metrics.report_stats_endpoint, stats
+            )
+        except Exception as e:
+            logger.warning("Error reporting stats: %s", e)
+
+    return run_as_background_process(
+        "phone_stats_home", server_name, _phone_stats_home, hs, stats, stats_process
+    )
 
 
 def start_phone_stats_home(hs: "HomeServer") -> None:
     """
     Start the background tasks which report phone home stats.
     """
+    server_name = hs.hostname
     clock = hs.get_clock()
 
     stats: JsonDict = {}
@@ -210,25 +235,39 @@ def start_phone_stats_home(hs: "HomeServer") -> None:
     )
     hs.get_datastores().main.reap_monthly_active_users()
 
-    @wrap_as_background_process("generate_monthly_active_users")
-    async def generate_monthly_active_users() -> None:
-        current_mau_count = 0
-        current_mau_count_by_service: Mapping[str, int] = {}
-        reserved_users: Sized = ()
-        store = hs.get_datastores().main
-        if hs.config.server.limit_usage_by_mau or hs.config.server.mau_stats_only:
-            current_mau_count = await store.get_monthly_active_count()
-            current_mau_count_by_service = (
-                await store.get_monthly_active_count_by_service()
+    def generate_monthly_active_users() -> "defer.Deferred[None]":
+        async def _generate_monthly_active_users() -> None:
+            current_mau_count = 0
+            current_mau_count_by_service: Mapping[str, int] = {}
+            reserved_users: Sized = ()
+            store = hs.get_datastores().main
+            if hs.config.server.limit_usage_by_mau or hs.config.server.mau_stats_only:
+                current_mau_count = await store.get_monthly_active_count()
+                current_mau_count_by_service = (
+                    await store.get_monthly_active_count_by_service()
+                )
+                reserved_users = await store.get_registered_reserved_users()
+            current_mau_gauge.labels(**{SERVER_NAME_LABEL: server_name}).set(
+                float(current_mau_count)
             )
-            reserved_users = await store.get_registered_reserved_users()
-        current_mau_gauge.set(float(current_mau_count))
 
-        for app_service, count in current_mau_count_by_service.items():
-            current_mau_by_service_gauge.labels(app_service).set(float(count))
+            for app_service, count in current_mau_count_by_service.items():
+                current_mau_by_service_gauge.labels(
+                    app_service=app_service, **{SERVER_NAME_LABEL: server_name}
+                ).set(float(count))
 
-        registered_reserved_users_mau_gauge.set(float(len(reserved_users)))
-        max_mau_gauge.set(float(hs.config.server.max_mau_value))
+            registered_reserved_users_mau_gauge.labels(
+                **{SERVER_NAME_LABEL: server_name}
+            ).set(float(len(reserved_users)))
+            max_mau_gauge.labels(**{SERVER_NAME_LABEL: server_name}).set(
+                float(hs.config.server.max_mau_value)
+            )
+
+        return run_as_background_process(
+            "generate_monthly_active_users",
+            server_name,
+            _generate_monthly_active_users,
+        )
 
     if hs.config.server.limit_usage_by_mau or hs.config.server.mau_stats_only:
         generate_monthly_active_users()

synapse/appservice/api.py

@@ -48,6 +48,7 @@ from synapse.events import EventBase
 from synapse.events.utils import SerializeEventConfig, serialize_event
 from synapse.http.client import SimpleHttpClient, is_unknown_endpoint
 from synapse.logging import opentracing
+from synapse.metrics import SERVER_NAME_LABEL
 from synapse.types import DeviceListUpdates, JsonDict, JsonMapping, ThirdPartyInstanceID
 from synapse.util.caches.response_cache import ResponseCache
 
@@ -59,29 +60,31 @@ logger = logging.getLogger(__name__)
 sent_transactions_counter = Counter(
     "synapse_appservice_api_sent_transactions",
     "Number of /transactions/ requests sent",
-    ["service"],
+    labelnames=["service", SERVER_NAME_LABEL],
 )
 
 failed_transactions_counter = Counter(
     "synapse_appservice_api_failed_transactions",
     "Number of /transactions/ requests that failed to send",
-    ["service"],
+    labelnames=["service", SERVER_NAME_LABEL],
 )
 
 sent_events_counter = Counter(
-    "synapse_appservice_api_sent_events", "Number of events sent to the AS", ["service"]
+    "synapse_appservice_api_sent_events",
+    "Number of events sent to the AS",
+    labelnames=["service", SERVER_NAME_LABEL],
 )
 
 sent_ephemeral_counter = Counter(
     "synapse_appservice_api_sent_ephemeral",
     "Number of ephemeral events sent to the AS",
-    ["service"],
+    labelnames=["service", SERVER_NAME_LABEL],
 )
 
 sent_todevice_counter = Counter(
     "synapse_appservice_api_sent_todevice",
     "Number of todevice messages sent to the AS",
-    ["service"],
+    labelnames=["service", SERVER_NAME_LABEL],
 )
 
 HOUR_IN_MS = 60 * 60 * 1000
@@ -382,6 +385,7 @@ class ApplicationServiceApi(SimpleHttpClient):
                     "left": list(device_list_summary.left),
                 }
 
+        labels = {"service": service.id, SERVER_NAME_LABEL: self.server_name}
         try:
             args = None
             if self.config.use_appservice_legacy_authorization:
@@ -399,10 +403,10 @@ class ApplicationServiceApi(SimpleHttpClient):
                     service.url,
                     [event.get("event_id") for event in events],
                 )
-            sent_transactions_counter.labels(service.id).inc()
-            sent_events_counter.labels(service.id).inc(len(serialized_events))
-            sent_ephemeral_counter.labels(service.id).inc(len(ephemeral))
-            sent_todevice_counter.labels(service.id).inc(len(to_device_messages))
+            sent_transactions_counter.labels(**labels).inc()
+            sent_events_counter.labels(**labels).inc(len(serialized_events))
+            sent_ephemeral_counter.labels(**labels).inc(len(ephemeral))
+            sent_todevice_counter.labels(**labels).inc(len(to_device_messages))
             return True
         except CodeMessageException as e:
             logger.warning(
@@ -421,7 +425,7 @@ class ApplicationServiceApi(SimpleHttpClient):
                 ex.args,
                 exc_info=logger.isEnabledFor(logging.DEBUG),
             )
-        failed_transactions_counter.labels(service.id).inc()
+        failed_transactions_counter.labels(**labels).inc()
         return False
 
     async def claim_client_keys(

synapse/appservice/scheduler.py

@@ -84,7 +84,7 @@ from synapse.logging.context import run_in_background
 from synapse.metrics.background_process_metrics import run_as_background_process
 from synapse.storage.databases.main import DataStore
 from synapse.types import DeviceListUpdates, JsonMapping
-from synapse.util import Clock
+from synapse.util.clock import Clock
 
 if TYPE_CHECKING:
     from synapse.server import HomeServer
@@ -103,18 +103,16 @@ MAX_TO_DEVICE_MESSAGES_PER_TRANSACTION = 100
 
 
 class ApplicationServiceScheduler:
-    """Public facing API for this module. Does the required DI to tie the
-    components together. This also serves as the "event_pool", which in this
+    """
+    Public facing API for this module. Does the required dependency injection (DI) to
+    tie the components together. This also serves as the "event_pool", which in this
     case is a simple array.
     """
 
     def __init__(self, hs: "HomeServer"):
-        self.clock = hs.get_clock()
+        self.txn_ctrl = _TransactionController(hs)
         self.store = hs.get_datastores().main
-        self.as_api = hs.get_application_service_api()
-
-        self.txn_ctrl = _TransactionController(self.clock, self.store, self.as_api)
-        self.queuer = _ServiceQueuer(self.txn_ctrl, self.clock, hs)
+        self.queuer = _ServiceQueuer(self.txn_ctrl, hs)
 
     async def start(self) -> None:
         logger.info("Starting appservice scheduler")
@@ -184,9 +182,7 @@ class _ServiceQueuer:
     appservice at a given time.
     """
 
-    def __init__(
-        self, txn_ctrl: "_TransactionController", clock: Clock, hs: "HomeServer"
-    ):
+    def __init__(self, txn_ctrl: "_TransactionController", hs: "HomeServer"):
         # dict of {service_id: [events]}
         self.queued_events: Dict[str, List[EventBase]] = {}
         # dict of {service_id: [events]}
@@ -199,10 +195,11 @@ class _ServiceQueuer:
         # the appservices which currently have a transaction in flight
         self.requests_in_flight: Set[str] = set()
         self.txn_ctrl = txn_ctrl
-        self.clock = clock
         self._msc3202_transaction_extensions_enabled: bool = (
             hs.config.experimental.msc3202_transaction_extensions
         )
+        self.server_name = hs.hostname
+        self.clock = hs.get_clock()
         self._store = hs.get_datastores().main
 
     def start_background_request(self, service: ApplicationService) -> None:
@@ -210,7 +207,9 @@ class _ServiceQueuer:
         if service.id in self.requests_in_flight:
             return
 
-        run_as_background_process("as-sender", self._send_request, service)
+        run_as_background_process(
+            "as-sender", self.server_name, self._send_request, service
+        )
 
     async def _send_request(self, service: ApplicationService) -> None:
         # sanity-check: we shouldn't get here if this service already has a sender
@@ -359,10 +358,11 @@ class _TransactionController:
     (Note we have only have one of these in the homeserver.)
     """
 
-    def __init__(self, clock: Clock, store: DataStore, as_api: ApplicationServiceApi):
-        self.clock = clock
-        self.store = store
-        self.as_api = as_api
+    def __init__(self, hs: "HomeServer"):
+        self.server_name = hs.hostname
+        self.clock = hs.get_clock()
+        self.store = hs.get_datastores().main
+        self.as_api = hs.get_application_service_api()
 
         # map from service id to recoverer instance
         self.recoverers: Dict[str, "_Recoverer"] = {}
@@ -446,7 +446,12 @@ class _TransactionController:
         logger.info("Starting recoverer for AS ID %s", service.id)
         assert service.id not in self.recoverers
         recoverer = self.RECOVERER_CLASS(
-            self.clock, self.store, self.as_api, service, self.on_recovered
+            self.server_name,
+            self.clock,
+            self.store,
+            self.as_api,
+            service,
+            self.on_recovered,
         )
         self.recoverers[service.id] = recoverer
         recoverer.recover()
@@ -477,21 +482,24 @@ class _Recoverer:
     We have one of these for each appservice which is currently considered DOWN.
 
     Args:
-        clock (synapse.util.Clock):
-        store (synapse.storage.DataStore):
-        as_api (synapse.appservice.api.ApplicationServiceApi):
-        service (synapse.appservice.ApplicationService): the service we are managing
-        callback (callable[_Recoverer]): called once the service recovers.
+        server_name: the homeserver name (used to label metrics) (this should be `hs.hostname`).
+        clock:
+        store:
+        as_api:
+        service: the service we are managing
+        callback: called once the service recovers.
     """
 
     def __init__(
         self,
+        server_name: str,
         clock: Clock,
         store: DataStore,
         as_api: ApplicationServiceApi,
         service: ApplicationService,
         callback: Callable[["_Recoverer"], Awaitable[None]],
     ):
+        self.server_name = server_name
         self.clock = clock
         self.store = store
         self.as_api = as_api
@@ -504,7 +512,11 @@ class _Recoverer:
         delay = 2**self.backoff_counter
         logger.info("Scheduling retries on %s in %fs", self.service.id, delay)
         self.scheduled_recovery = self.clock.call_later(
-            delay, run_as_background_process, "as-recoverer", self.retry
+            delay,
+            run_as_background_process,
+            "as-recoverer",
+            self.server_name,
+            self.retry,
         )
 
     def _backoff(self) -> None:
@@ -525,6 +537,7 @@ class _Recoverer:
         # Run a retry, which will resechedule a recovery if it fails.
         run_as_background_process(
             "retry",
+            self.server_name,
             self.retry,
         )
 

synapse/config/_base.py

@@ -22,6 +22,7 @@
 
 import argparse
 import errno
+import importlib.resources as importlib_resources
 import logging
 import os
 import re
@@ -46,7 +47,6 @@ from typing import (
 
 import attr
 import jinja2
-import pkg_resources
 import yaml
 
 from synapse.types import StrSequence
@@ -174,8 +174,8 @@ class Config:
         self.root = root_config
 
         # Get the path to the default Synapse template directory
-        self.default_template_dir = pkg_resources.resource_filename(
-            "synapse", "res/templates"
+        self.default_template_dir = str(
+            importlib_resources.files("synapse").joinpath("res").joinpath("templates")
         )
 
     @staticmethod

synapse/config/_base.pyi

@@ -36,6 +36,7 @@ from synapse.config import (  # noqa: F401
     jwt,
     key,
     logger,
+    mas,
     metrics,
     modules,
     oembed,
@@ -124,6 +125,7 @@ class RootConfig:
     background_updates: background_updates.BackgroundUpdateConfig
     auto_accept_invites: auto_accept_invites.AutoAcceptInvitesConfig
     user_types: user_types.UserTypesConfig
+    mas: mas.MasConfig
 
     config_classes: List[Type["Config"]] = ...
     config_files: List[str]

synapse/config/auth.py

@@ -36,13 +36,14 @@ class AuthConfig(Config):
         if password_config is None:
             password_config = {}
 
-        # The default value of password_config.enabled is True, unless msc3861 is enabled.
-        msc3861_enabled = (
-            (config.get("experimental_features") or {})
-            .get("msc3861", {})
-            .get("enabled", False)
-        )
-        passwords_enabled = password_config.get("enabled", not msc3861_enabled)
+        auth_delegated = (config.get("experimental_features") or {}).get(
+            "msc3861", {}
+        ).get("enabled", False) or (
+            config.get("matrix_authentication_service") or {}
+        ).get("enabled", False)
+
+        # The default value of password_config.enabled is True, unless auth is delegated
+        passwords_enabled = password_config.get("enabled", not auth_delegated)
 
         # 'only_for_reauth' allows users who have previously set a password to use it,
         # even though passwords would otherwise be disabled.

synapse/config/experimental.py

@@ -535,11 +535,15 @@ class ExperimentalConfig(Config):
             "msc4108_delegation_endpoint", None
         )
 
+        auth_delegated = self.msc3861.enabled or (
+            config.get("matrix_authentication_service") or {}
+        ).get("enabled", False)
+
         if (
             self.msc4108_enabled or self.msc4108_delegation_endpoint is not None
-        ) and not self.msc3861.enabled:
+        ) and not auth_delegated:
             raise ConfigError(
-                "MSC4108 requires MSC3861 to be enabled",
+                "MSC4108 requires MSC3861 or matrix_authentication_service to be enabled",
                 ("experimental", "msc4108_delegation_endpoint"),
             )
 
@@ -582,6 +586,9 @@ class ExperimentalConfig(Config):
         # MSC4155: Invite filtering
         self.msc4155_enabled: bool = experimental.get("msc4155_enabled", False)
 
+        # MSC4293: Redact on Kick/Ban
+        self.msc4293_enabled: bool = experimental.get("msc4293_enabled", False)
+
         # MSC4306: Thread Subscriptions
-        # (and MSC4308: sliding sync extension for thread subscriptions)
+        # (and MSC4308: Thread Subscriptions extension to Sliding Sync)
         self.msc4306_enabled: bool = experimental.get("msc4306_enabled", False)

synapse/config/homeserver.py

@@ -36,6 +36,7 @@ from .federation import FederationConfig
 from .jwt import JWTConfig
 from .key import KeyConfig
 from .logger import LoggingConfig
+from .mas import MasConfig
 from .metrics import MetricsConfig
 from .modules import ModulesConfig
 from .oembed import OembedConfig
@@ -109,4 +110,6 @@ class HomeServerConfig(RootConfig):
         BackgroundUpdateConfig,
         AutoAcceptInvitesConfig,
         UserTypesConfig,
+        # This must be last, as it checks for conflicts with other config options.
+        MasConfig,
     ]

synapse/config/mas.py

@@ -0,0 +1,192 @@
+#
+# This file is licensed under the Affero General Public License (AGPL) version 3.
+#
+# Copyright (C) 2025 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>.
+#
+#
+
+from typing import Any, Optional
+
+from synapse._pydantic_compat import (
+    AnyHttpUrl,
+    Field,
+    FilePath,
+    StrictBool,
+    StrictStr,
+    ValidationError,
+    validator,
+)
+from synapse.config.experimental import read_secret_from_file_once
+from synapse.types import JsonDict
+from synapse.util.pydantic_models import ParseModel
+
+from ._base import Config, ConfigError, RootConfig
+
+
+class MasConfigModel(ParseModel):
+    enabled: StrictBool = False
+    endpoint: AnyHttpUrl = Field(default="http://localhost:8080")
+    secret: Optional[StrictStr] = Field(default=None)
+    secret_path: Optional[FilePath] = Field(default=None)
+
+    @validator("secret")
+    def validate_secret_is_set_if_enabled(cls, v: Any, values: dict) -> Any:
+        if values.get("enabled", False) and not values.get("secret_path") and not v:
+            raise ValueError(
+                "You must set a `secret` or `secret_path` when enabling Matrix Authentication Service integration."
+            )
+
+        return v
+
+    @validator("secret_path")
+    def validate_secret_path_is_set_if_enabled(cls, v: Any, values: dict) -> Any:
+        if values.get("secret"):
+            raise ValueError(
+                "`secret` and `secret_path` cannot be set at the same time."
+            )
+
+        return v
+
+
+class MasConfig(Config):
+    section = "mas"
+
+    def read_config(
+        self, config: JsonDict, allow_secrets_in_config: bool, **kwargs: Any
+    ) -> None:
+        mas_config = config.get("matrix_authentication_service", {})
+        if mas_config is None:
+            mas_config = {}
+
+        try:
+            parsed = MasConfigModel(**mas_config)
+        except ValidationError as e:
+            raise ConfigError(
+                "Could not validate Matrix Authentication Service configuration",
+                path=("matrix_authentication_service",),
+            ) from e
+
+        if parsed.secret and not allow_secrets_in_config:
+            raise ConfigError(
+                "Config options that expect an in-line secret as value are disabled",
+                ("matrix_authentication_service", "secret"),
+            )
+
+        self.enabled = parsed.enabled
+        self.endpoint = parsed.endpoint
+        self._secret = parsed.secret
+        self._secret_path = parsed.secret_path
+
+        self.check_config_conflicts(self.root)
+
+    def check_config_conflicts(
+        self,
+        root: RootConfig,
+    ) -> None:
+        """Checks for any configuration conflicts with other parts of Synapse.
+
+        Raises:
+            ConfigError: If there are any configuration conflicts.
+        """
+
+        if not self.enabled:
+            return
+
+        if root.experimental.msc3861.enabled:
+            raise ConfigError(
+                "Experimental MSC3861 was replaced by Matrix Authentication Service."
+                "Please disable MSC3861 or disable Matrix Authentication Service.",
+                ("experimental", "msc3861"),
+            )
+
+        if (
+            root.auth.password_enabled_for_reauth
+            or root.auth.password_enabled_for_login
+        ):
+            raise ConfigError(
+                "Password auth cannot be enabled when OAuth delegation is enabled",
+                ("password_config", "enabled"),
+            )
+
+        if root.registration.enable_registration:
+            raise ConfigError(
+                "Registration cannot be enabled when OAuth delegation is enabled",
+                ("enable_registration",),
+            )
+
+        # We only need to test the user consent version, as if it must be set if the user_consent section was present in the config
+        if root.consent.user_consent_version is not None:
+            raise ConfigError(
+                "User consent cannot be enabled when OAuth delegation is enabled",
+                ("user_consent",),
+            )
+
+        if (
+            root.oidc.oidc_enabled
+            or root.saml2.saml2_enabled
+            or root.cas.cas_enabled
+            or root.jwt.jwt_enabled
+        ):
+            raise ConfigError("SSO cannot be enabled when OAuth delegation is enabled")
+
+        if bool(root.authproviders.password_providers):
+            raise ConfigError(
+                "Password auth providers cannot be enabled when OAuth delegation is enabled"
+            )
+
+        if root.captcha.enable_registration_captcha:
+            raise ConfigError(
+                "CAPTCHA cannot be enabled when OAuth delegation is enabled",
+                ("captcha", "enable_registration_captcha"),
+            )
+
+        if root.auth.login_via_existing_enabled:
+            raise ConfigError(
+                "Login via existing session cannot be enabled when OAuth delegation is enabled",
+                ("login_via_existing_session", "enabled"),
+            )
+
+        if root.registration.refresh_token_lifetime:
+            raise ConfigError(
+                "refresh_token_lifetime cannot be set when OAuth delegation is enabled",
+                ("refresh_token_lifetime",),
+            )
+
+        if root.registration.nonrefreshable_access_token_lifetime:
+            raise ConfigError(
+                "nonrefreshable_access_token_lifetime cannot be set when OAuth delegation is enabled",
+                ("nonrefreshable_access_token_lifetime",),
+            )
+
+        if root.registration.session_lifetime:
+            raise ConfigError(
+                "session_lifetime cannot be set when OAuth delegation is enabled",
+                ("session_lifetime",),
+            )
+
+        if root.registration.enable_3pid_changes:
+            raise ConfigError(
+                "enable_3pid_changes cannot be enabled when OAuth delegation is enabled",
+                ("enable_3pid_changes",),
+            )
+
+    def secret(self) -> str:
+        if self._secret is not None:
+            return self._secret
+        elif self._secret_path is not None:
+            return read_secret_from_file_once(
+                str(self._secret_path),
+                ("matrix_authentication_service", "secret_path"),
+            )
+        else:
+            raise RuntimeError(
+                "Neither `secret` nor `secret_path` are set, this is a bug.",
+            )

synapse/config/oembed.py

@@ -18,13 +18,13 @@
 # [This file includes modifications made by New Vector Limited]
 #
 #
+import importlib.resources as importlib_resources
 import json
 import re
 from typing import Any, Dict, Iterable, List, Optional, Pattern
 from urllib import parse as urlparse
 
 import attr
-import pkg_resources
 
 from synapse.types import JsonDict, StrSequence
 
@@ -64,7 +64,12 @@ class OembedConfig(Config):
         """
         # Whether to use the packaged providers.json file.
         if not oembed_config.get("disable_default_providers") or False:
-            with pkg_resources.resource_stream("synapse", "res/providers.json") as s:
+            path = (
+                importlib_resources.files("synapse")
+                .joinpath("res")
+                .joinpath("providers.json")
+            )
+            with path.open("r", encoding="utf-8") as s:
                 providers = json.load(s)
 
             yield from self._parse_and_validate_provider(

synapse/config/ratelimiting.py

@@ -241,6 +241,12 @@ class RatelimitConfig(Config):
             defaults={"per_second": 1, "burst_count": 5},
         )
 
+        self.rc_room_creation = RatelimitSettings.parse(
+            config,
+            "rc_room_creation",
+            defaults={"per_second": 0.016, "burst_count": 10},
+        )
+
         self.rc_reports = RatelimitSettings.parse(
             config,
             "rc_reports",

synapse/config/registration.py

@@ -148,15 +148,14 @@ class RegistrationConfig(Config):
         self.enable_set_displayname = config.get("enable_set_displayname", True)
         self.enable_set_avatar_url = config.get("enable_set_avatar_url", True)
 
+        auth_delegated = (config.get("experimental_features") or {}).get(
+            "msc3861", {}
+        ).get("enabled", False) or (
+            config.get("matrix_authentication_service") or {}
+        ).get("enabled", False)
+
         # The default value of enable_3pid_changes is True, unless msc3861 is enabled.
-        msc3861_enabled = (
-            (config.get("experimental_features") or {})
-            .get("msc3861", {})
-            .get("enabled", False)
-        )
-        self.enable_3pid_changes = config.get(
-            "enable_3pid_changes", not msc3861_enabled
-        )
+        self.enable_3pid_changes = config.get("enable_3pid_changes", not auth_delegated)
 
         self.disable_msisdn_registration = config.get(
             "disable_msisdn_registration", False

synapse/config/repository.py

@@ -22,11 +22,10 @@
 import logging
 import os
 from typing import Any, Dict, List, Tuple
-from urllib.request import getproxies_environment
 
 import attr
 
-from synapse.config.server import generate_ip_set
+from synapse.config.server import generate_ip_set, parse_proxy_config
 from synapse.types import JsonDict
 from synapse.util.check_dependencies import check_requirements
 from synapse.util.module_loader import load_module
@@ -61,7 +60,7 @@ THUMBNAIL_SUPPORTED_MEDIA_FORMAT_MAP = {
     "image/png": "png",
 }
 
-HTTP_PROXY_SET_WARNING = """\
+URL_PREVIEW_BLACKLIST_IGNORED_BECAUSE_HTTP_PROXY_SET_WARNING = """\
 The Synapse config url_preview_ip_range_blacklist will be ignored as an HTTP(s) proxy is configured."""
 
 
@@ -121,11 +120,19 @@ def parse_thumbnail_requirements(
 
 @attr.s(auto_attribs=True, slots=True, frozen=True)
 class MediaUploadLimit:
-    """A limit on the amount of data a user can upload in a given time
-    period."""
+    """
+    Represents a limit on the amount of data a user can upload in a given time
+    period.
+
+    These can be configured through the `media_upload_limits` [config option](https://element-hq.github.io/synapse/latest/usage/configuration/config_documentation.html#media_upload_limits)
+    or via the `get_media_upload_limits_for_user` module API [callback](https://element-hq.github.io/synapse/latest/modules/media_repository_callbacks.html#get_media_upload_limits_for_user).
+    """
 
     max_bytes: int
+    """The maximum number of bytes that can be uploaded in the given time period."""
+
     time_period_ms: int
+    """The time period in milliseconds."""
 
 
 class ContentRepositoryConfig(Config):
@@ -234,17 +241,25 @@ class ContentRepositoryConfig(Config):
         if self.url_preview_enabled:
             check_requirements("url-preview")
 
-            proxy_env = getproxies_environment()
-            if "url_preview_ip_range_blacklist" not in config:
-                if "http" not in proxy_env or "https" not in proxy_env:
+            proxy_config = parse_proxy_config(config)
+            is_proxy_configured = (
+                proxy_config.http_proxy is not None
+                or proxy_config.https_proxy is not None
+            )
+            if "url_preview_ip_range_blacklist" in config:
+                if is_proxy_configured:
+                    logger.warning(
+                        "".join(
+                            URL_PREVIEW_BLACKLIST_IGNORED_BECAUSE_HTTP_PROXY_SET_WARNING
+                        )
+                    )
+            else:
+                if not is_proxy_configured:
                     raise ConfigError(
                         "For security, you must specify an explicit target IP address "
                         "blacklist in url_preview_ip_range_blacklist for url previewing "
                         "to work"
                     )
-            else:
-                if "http" in proxy_env or "https" in proxy_env:
-                    logger.warning("".join(HTTP_PROXY_SET_WARNING))
 
             # we always block '0.0.0.0' and '::', which are supposed to be
             # unroutable addresses.

synapse/config/server.py

@@ -25,11 +25,13 @@ import logging
 import os.path
 import urllib.parse
 from textwrap import indent
-from typing import Any, Dict, Iterable, List, Optional, Set, Tuple, Union
+from typing import Any, Dict, Iterable, List, Optional, Set, Tuple, TypedDict, Union
+from urllib.request import getproxies_environment
 
 import attr
 import yaml
 from netaddr import AddrFormatError, IPNetwork, IPSet
+from typing_extensions import TypeGuard
 
 from twisted.conch.ssh.keys import Key
 
@@ -43,6 +45,21 @@ from ._util import validate_config
 
 logger = logging.getLogger(__name__)
 
+
+# Directly from the mypy docs:
+# https://typing.python.org/en/latest/spec/narrowing.html#typeguard
+def is_str_list(val: Any, allow_empty: bool) -> TypeGuard[list[str]]:
+    """
+    Type-narrow a value to a list of strings (compatible with mypy).
+    """
+    if not isinstance(val, list):
+        return False
+
+    if len(val) == 0:
+        return allow_empty
+    return all(isinstance(x, str) for x in val)
+
+
 DIRECT_TCP_ERROR = """
 Using direct TCP replication for workers is no longer supported.
 
@@ -291,6 +308,102 @@ class LimitRemoteRoomsConfig:
     )
 
 
+class ProxyConfigDictionary(TypedDict):
+    """
+    Dictionary of proxy settings suitable for interacting with `urllib.request` API's
+    """
+
+    http: Optional[str]
+    """
+    Proxy server to use for HTTP requests.
+    """
+    https: Optional[str]
+    """
+    Proxy server to use for HTTPS requests.
+    """
+    no: str
+    """
+    Comma-separated list of hosts, IP addresses, or IP ranges in CIDR format which
+    should not use the proxy.
+
+    Empty string means no hosts should be excluded from the proxy.
+    """
+
+
+@attr.s(slots=True, frozen=True, auto_attribs=True)
+class ProxyConfig:
+    """
+    Synapse configuration for HTTP proxy settings.
+    """
+
+    http_proxy: Optional[str]
+    """
+    Proxy server to use for HTTP requests.
+    """
+    https_proxy: Optional[str]
+    """
+    Proxy server to use for HTTPS requests.
+    """
+    no_proxy_hosts: Optional[List[str]]
+    """
+    List of hosts, IP addresses, or IP ranges in CIDR format which should not use the
+    proxy. Synapse will directly connect to these hosts.
+    """
+
+    def get_proxies_dictionary(self) -> ProxyConfigDictionary:
+        """
+        Returns a dictionary of proxy settings suitable for interacting with
+        `urllib.request` API's (e.g. `urllib.request.proxy_bypass_environment`)
+
+        The keys are `"http"`, `"https"`, and `"no"`.
+        """
+        return ProxyConfigDictionary(
+            http=self.http_proxy,
+            https=self.https_proxy,
+            no=",".join(self.no_proxy_hosts) if self.no_proxy_hosts else "",
+        )
+
+
+def parse_proxy_config(config: JsonDict) -> ProxyConfig:
+    """
+    Figure out forward proxy config for outgoing HTTP requests.
+
+    Prefer values from the given config over the environment variables (`http_proxy`,
+    `https_proxy`, `no_proxy`, not case-sensitive).
+
+    Args:
+        config: The top-level homeserver configuration dictionary.
+    """
+    proxies_from_env = getproxies_environment()
+    http_proxy = config.get("http_proxy", proxies_from_env.get("http"))
+    if http_proxy is not None and not isinstance(http_proxy, str):
+        raise ConfigError("'http_proxy' must be a string", ("http_proxy",))
+
+    https_proxy = config.get("https_proxy", proxies_from_env.get("https"))
+    if https_proxy is not None and not isinstance(https_proxy, str):
+        raise ConfigError("'https_proxy' must be a string", ("https_proxy",))
+
+    # List of hosts which should not use the proxy. Synapse will directly connect to
+    # these hosts.
+    no_proxy_hosts = config.get("no_proxy_hosts")
+    # The `no_proxy` environment variable should be a comma-separated list of hosts,
+    # IP addresses, or IP ranges in CIDR format
+    no_proxy_from_env = proxies_from_env.get("no")
+    if no_proxy_hosts is None and no_proxy_from_env is not None:
+        no_proxy_hosts = no_proxy_from_env.split(",")
+
+    if no_proxy_hosts is not None and not is_str_list(no_proxy_hosts, allow_empty=True):
+        raise ConfigError(
+            "'no_proxy_hosts' must be a list of strings", ("no_proxy_hosts",)
+        )
+
+    return ProxyConfig(
+        http_proxy=http_proxy,
+        https_proxy=https_proxy,
+        no_proxy_hosts=no_proxy_hosts,
+    )
+
+
 class ServerConfig(Config):
     section = "server"
 
@@ -718,6 +831,17 @@ class ServerConfig(Config):
                 )
             )
 
+        # Figure out forward proxy config for outgoing HTTP requests.
+        #
+        # Prefer values from the file config over the environment variables
+        self.proxy_config = parse_proxy_config(config)
+        logger.debug(
+            "Using proxy settings: http_proxy=%s, https_proxy=%s, no_proxy=%s",
+            self.proxy_config.http_proxy,
+            self.proxy_config.https_proxy,
+            self.proxy_config.no_proxy_hosts,
+        )
+
         self.cleanup_extremities_with_dummy_events = config.get(
             "cleanup_extremities_with_dummy_events", True
         )

synapse/crypto/keyring.py

@@ -152,6 +152,8 @@ class Keyring:
     def __init__(
         self, hs: "HomeServer", key_fetchers: "Optional[Iterable[KeyFetcher]]" = None
     ):
+        self.server_name = hs.hostname
+
         if key_fetchers is None:
             # Always fetch keys from the database.
             mutable_key_fetchers: List[KeyFetcher] = [StoreKeyFetcher(hs)]
@@ -169,7 +171,8 @@ class Keyring:
         self._fetch_keys_queue: BatchingQueue[
             _FetchKeyRequest, Dict[str, Dict[str, FetchKeyResult]]
         ] = BatchingQueue(
-            "keyring_server",
+            name="keyring_server",
+            server_name=self.server_name,
             clock=hs.get_clock(),
             # The method called to fetch each key
             process_batch_callback=self._inner_fetch_key_requests,
@@ -473,8 +476,12 @@ class Keyring:
 
 class KeyFetcher(metaclass=abc.ABCMeta):
     def __init__(self, hs: "HomeServer"):
+        self.server_name = hs.hostname
         self._queue = BatchingQueue(
-            self.__class__.__name__, hs.get_clock(), self._fetch_keys
+            name=self.__class__.__name__,
+            server_name=self.server_name,
+            clock=hs.get_clock(),
+            process_batch_callback=self._fetch_keys,
         )
 
     async def get_keys(

synapse/event_auth.py

@@ -65,8 +65,8 @@ from synapse.api.room_versions import (
     RoomVersion,
     RoomVersions,
 )
-from synapse.state import CREATE_KEY
 from synapse.events import is_creator
+from synapse.state import CREATE_KEY
 from synapse.storage.databases.main.events_worker import EventRedactBehaviour
 from synapse.types import (
     MutableStateMap,