Add changelog

This python implementation of a tap formatting library for buildkite has been
replaced with a perl implementation as part of the matrix-org/sytest repo,
which is specific to sytest's language, not that of any one homeserver's.

This is all for dendrite really.

.buildkite/docker-compose.py35.pg95.yaml

@@ -0,0 +1,22 @@
+version: '3.1'
+
+services:
+
+  postgres:
+    image: postgres:9.5
+    environment:
+      POSTGRES_PASSWORD: postgres
+    command: -c fsync=off
+
+  testenv:
+    image: python:3.5
+    depends_on:
+      - postgres
+    env_file: .env
+    environment:
+      SYNAPSE_POSTGRES_HOST: postgres
+      SYNAPSE_POSTGRES_USER: postgres
+      SYNAPSE_POSTGRES_PASSWORD: postgres
+    working_dir: /src
+    volumes:
+      - ..:/src

.buildkite/docker-compose.py37.pg11.yaml

@@ -0,0 +1,22 @@
+version: '3.1'
+
+services:
+
+  postgres:
+    image: postgres:11
+    environment:
+      POSTGRES_PASSWORD: postgres
+    command: -c fsync=off
+
+  testenv:
+    image: python:3.7
+    depends_on:
+      - postgres
+    env_file: .env
+    environment:
+      SYNAPSE_POSTGRES_HOST: postgres
+      SYNAPSE_POSTGRES_USER: postgres
+      SYNAPSE_POSTGRES_PASSWORD: postgres
+    working_dir: /src
+    volumes:
+      - ..:/src

.buildkite/docker-compose.py37.pg95.yaml

@@ -0,0 +1,22 @@
+version: '3.1'
+
+services:
+
+  postgres:
+    image: postgres:9.5
+    environment:
+      POSTGRES_PASSWORD: postgres
+    command: -c fsync=off
+
+  testenv:
+    image: python:3.7
+    depends_on:
+      - postgres
+    env_file: .env
+    environment:
+      SYNAPSE_POSTGRES_HOST: postgres
+      SYNAPSE_POSTGRES_USER: postgres
+      SYNAPSE_POSTGRES_PASSWORD: postgres
+    working_dir: /src
+    volumes:
+      - ..:/src

.buildkite/merge_base_branch.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-set -e
+set -ex
 
 if [[ "$BUILDKITE_BRANCH" =~ ^(develop|master|dinsic|shhs|release-.*)$ ]]; then
     echo "Not merging forward, as this is a release branch"
@@ -18,8 +18,6 @@ else
     GITBASE=$BUILDKITE_PULL_REQUEST_BASE_BRANCH
 fi
 
-echo "--- merge_base_branch $GITBASE"
-
 # Show what we are before
 git --no-pager show -s
 

.buildkite/postgres-config.yaml

@@ -1,21 +0,0 @@
-# Configuration file used for testing the 'synapse_port_db' script.
-# Tells the script to connect to the postgresql database that will be available in the
-# CI's Docker setup at the point where this file is considered.
-server_name: "localhost:8800"
-
-signing_key_path: "/src/.buildkite/test.signing.key"
-
-report_stats: false
-
-database:
-  name: "psycopg2"
-  args:
-    user: postgres
-    host: postgres
-    password: postgres
-    database: synapse
-
-# Suppress the key server warning.
-trusted_key_servers:
-  - server_name: "matrix.org"
-suppress_key_server_warning: true

.buildkite/scripts/create_postgres_db.py

@@ -1,36 +0,0 @@
-#!/usr/bin/env python
-# -*- coding: utf-8 -*-
-# Copyright 2019 The Matrix.org Foundation C.I.C.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import logging
-from synapse.storage.engines import create_engine
-
-logger = logging.getLogger("create_postgres_db")
-
-if __name__ == "__main__":
-    # Create a PostgresEngine.
-    db_engine = create_engine({"name": "psycopg2", "args": {}})
-
-    # Connect to postgres to create the base database.
-    # We use "postgres" as a database because it's bound to exist and the "synapse" one
-    # doesn't exist yet.
-    db_conn = db_engine.module.connect(
-        user="postgres", host="postgres", password="postgres", dbname="postgres"
-    )
-    db_conn.autocommit = True
-    cur = db_conn.cursor()
-    cur.execute("CREATE DATABASE synapse;")
-    cur.close()
-    db_conn.close()

.buildkite/scripts/test_old_deps.sh

@@ -1,13 +0,0 @@
-#!/bin/bash
-
-# this script is run by buildkite in a plain `xenial` container; it installs the
-# minimal requirements for tox and hands over to the py35-old tox environment.
-
-set -ex
-
-apt-get update
-apt-get install -y python3.5 python3.5-dev python3-pip libxml2-dev libxslt-dev zlib1g-dev tox
-
-export LANG="C.UTF-8"
-
-exec tox -e py35-old,combine

.buildkite/scripts/test_synapse_port_db.sh

@@ -1,36 +0,0 @@
-#!/bin/bash
-#
-# Test script for 'synapse_port_db', which creates a virtualenv, installs Synapse along
-# with additional dependencies needed for the test (such as coverage or the PostgreSQL
-# driver), update the schema of the test SQLite database and run background updates on it,
-# create an empty test database in PostgreSQL, then run the 'synapse_port_db' script to
-# test porting the SQLite database to the PostgreSQL database (with coverage).
-
-set -xe
-cd `dirname $0`/../..
-
-echo "--- Install dependencies"
-
-# Install dependencies for this test.
-pip install psycopg2 coverage coverage-enable-subprocess
-
-# Install Synapse itself. This won't update any libraries.
-pip install -e .
-
-echo "--- Generate the signing key"
-
-# Generate the server's signing key.
-python -m synapse.app.homeserver --generate-keys -c .buildkite/sqlite-config.yaml
-
-echo "--- Prepare the databases"
-
-# Make sure the SQLite3 database is using the latest schema and has no pending background update.
-scripts-dev/update_database --database-config .buildkite/sqlite-config.yaml
-
-# Create the PostgreSQL database.
-./.buildkite/scripts/create_postgres_db.py
-
-echo "+++ Run synapse_port_db"
-
-# Run the script
-coverage run scripts/synapse_port_db --sqlite-database .buildkite/test_db.db --postgres-config .buildkite/postgres-config.yaml

.buildkite/sqlite-config.yaml

@@ -1,18 +0,0 @@
-# Configuration file used for testing the 'synapse_port_db' script.
-# Tells the 'update_database' script to connect to the test SQLite database to upgrade its
-# schema and run background updates on it.
-server_name: "localhost:8800"
-
-signing_key_path: "/src/.buildkite/test.signing.key"
-
-report_stats: false
-
-database:
-  name: "sqlite3"
-  args:
-    database: ".buildkite/test_db.db"
-
-# Suppress the key server warning.
-trusted_key_servers:
-  - server_name: "matrix.org"
-suppress_key_server_warning: true

.buildkite/worker-blacklist

@@ -28,16 +28,3 @@ User sees updates to presence from other users in the incremental sync.
 Gapped incremental syncs include all state changes
 
 Old members are included in gappy incr LL sync if they start speaking
-
-# new failures as of https://github.com/matrix-org/sytest/pull/732
-Device list doesn't change if remote server is down
-Remote servers cannot set power levels in rooms without existing powerlevels
-Remote servers should reject attempts by non-creators to set the power levels
-
-# https://buildkite.com/matrix-dot-org/synapse/builds/6134#6f67bf47-e234-474d-80e8-c6e1868b15c5
-Server correctly handles incoming m.device_list_update
-
-# this fails reliably with a torture level of 100 due to https://github.com/matrix-org/synapse/issues/6536
-Outbound federation requests missing prev_events and then asks for /state_ids and resolves the state
-
-Can get rooms/{roomId}/members at a given point

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,12 +1,7 @@
 ### Pull Request Checklist
 
-<!-- Please read CONTRIBUTING.md before submitting your pull request -->
+<!-- Please read CONTRIBUTING.rst before submitting your pull request -->
 
 * [ ] Pull request is based on the develop branch
-* [ ] Pull request includes a [changelog file](https://github.com/matrix-org/synapse/blob/master/CONTRIBUTING.md#changelog). The entry should:
-  - Be a short description of your change which makes sense to users. "Fixed a bug that prevented receiving messages from other servers." instead of "Moved X method from `EventStore` to `EventWorkerStore`.".
-  - Use markdown where necessary, mostly for `code blocks`.
-  - End with either a period (.) or an exclamation mark (!).
-  - Start with a capital letter.
-* [ ] Pull request includes a [sign off](https://github.com/matrix-org/synapse/blob/master/CONTRIBUTING.md#sign-off)
-* [ ] Code style is correct (run the [linters](https://github.com/matrix-org/synapse/blob/master/CONTRIBUTING.md#code-style))
+* [ ] Pull request includes a [changelog file](https://github.com/matrix-org/synapse/blob/master/CONTRIBUTING.rst#changelog)
+* [ ] Pull request includes a [sign off](https://github.com/matrix-org/synapse/blob/master/CONTRIBUTING.rst#sign-off)

AUTHORS.rst

@@ -1,8 +1,34 @@
-The following is an incomplete list of people outside the core team who have
-contributed to Synapse. It is no longer maintained: more recent contributions
-are listed in the `changelog <CHANGES.md>`_.
+Erik Johnston <erik at matrix.org>
+ * HS core
+ * Federation API impl
 
-----
+Mark Haines <mark at matrix.org>
+ * HS core
+ * Crypto
+ * Content repository
+ * CS v2 API impl
+
+Kegan Dougal <kegan at matrix.org>
+ * HS core
+ * CS v1 API impl
+ * AS API impl
+
+Paul "LeoNerd" Evans <paul at matrix.org>
+ * HS core
+ * Presence
+ * Typing Notifications
+ * Performance metrics and caching layer
+
+Dave Baker <dave at matrix.org>
+ * Push notifications
+ * Auth CS v2 impl
+
+Matthew Hodgson <matthew at matrix.org>
+ * General doc & housekeeping
+ * Vertobot/vertobridge matrix<->verto PoC
+
+Emmanuel Rohee <manu at matrix.org>
+ * Supporting iOS clients (testability and fallback registration)
 
 Turned to Dust <dwinslow86 at gmail.com>
  * ArchLinux installation instructions
@@ -36,16 +62,16 @@ Christoph Witzany <christoph at web.crofting.com>
  * Add LDAP support for authentication
 
 Pierre Jaury <pierre at jaury.eu>
- * Docker packaging
+* Docker packaging
 
 Serban Constantin <serban.constantin at gmail dot com>
  * Small bug fix
 
+Jason Robinson <jasonr at matrix.org>
+ * Minor fixes
+
 Joseph Weston <joseph at weston.cloud>
- * Add admin API for querying HS version
+ + Add admin API for querying HS version
 
 Benjamin Saunders <ben.e.saunders at gmail dot com>
  * Documentation improvements
-
-Werner Sembach <werner.sembach at fau dot de>
- * Automatically remove a group/community when it is empty

CHANGES.md

@@ -1,882 +1,3 @@
-Synapse 1.12.0 (2020-03-23)
-===========================
-
-No significant changes since 1.12.0rc1.
-
-Debian packages and Docker images are rebuilt using the latest versions of
-dependency libraries, including Twisted 20.3.0. **Please see security advisory
-below**.
-
-Security advisory
------------------
-
-Synapse may be vulnerable to request-smuggling attacks when it is used with a
-reverse-proxy. The vulnerabilties are fixed in Twisted 20.3.0, and are
-described in
-[CVE-2020-10108](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-10108)
-and
-[CVE-2020-10109](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-10109).
-For a good introduction to this class of request-smuggling attacks, see
-https://portswigger.net/research/http-desync-attacks-request-smuggling-reborn.
-
-We are not aware of these vulnerabilities being exploited in the wild, and
-do not believe that they are exploitable with current versions of any reverse
-proxies. Nevertheless, we recommend that all Synapse administrators ensure that
-they have the latest versions of the Twisted library to ensure that their
-installation remains secure.
-
-* Administrators using the [`matrix.org` Docker
-  image](https://hub.docker.com/r/matrixdotorg/synapse/) or the [Debian/Ubuntu
-  packages from
-  `matrix.org`](https://github.com/matrix-org/synapse/blob/master/INSTALL.md#matrixorg-packages)
-  should ensure that they have version 1.12.0 installed: these images include
-  Twisted 20.3.0.
-* Administrators who have [installed Synapse from
-  source](https://github.com/matrix-org/synapse/blob/master/INSTALL.md#installing-from-source)
-  should upgrade Twisted within their virtualenv by running:
-  ```sh
-  <path_to_virtualenv>/bin/pip install 'Twisted>=20.3.0'
-  ```
-* Administrators who have installed Synapse from distribution packages should
-  consult the information from their distributions.
-
-The `matrix.org` Synapse instance was not vulnerable to these vulnerabilities.
-
-Advance notice of change to the default `git` branch for Synapse
-----------------------------------------------------------------
-
-Currently, the default `git` branch for Synapse is `master`, which tracks the
-latest release.
-
-After the release of Synapse 1.13.0, we intend to change this default to
-`develop`, which is the development tip. This is more consistent with common
-practice and modern `git` usage.
-
-Although we try to keep `develop` in a stable state, there may be occasions
-where regressions creep in. Developers and distributors who have scripts which
-run builds using the default branch of `Synapse` should therefore consider
-pinning their scripts to `master`.
-
-
-Synapse 1.12.0rc1 (2020-03-19)
-==============================
-
-Features
---------
-
-- Changes related to room alias management ([MSC2432](https://github.com/matrix-org/matrix-doc/pull/2432)):
-  - Publishing/removing a room from the room directory now requires the user to have a power level capable of modifying the canonical alias, instead of the room aliases. ([\#6965](https://github.com/matrix-org/synapse/issues/6965))
-  - Validate the `alt_aliases` property of canonical alias events. ([\#6971](https://github.com/matrix-org/synapse/issues/6971))
-  - Users with a power level sufficient to modify the canonical alias of a room can now delete room aliases. ([\#6986](https://github.com/matrix-org/synapse/issues/6986))
-  - Implement updated authorization rules and redaction rules for aliases events, from [MSC2261](https://github.com/matrix-org/matrix-doc/pull/2261) and [MSC2432](https://github.com/matrix-org/matrix-doc/pull/2432). ([\#7037](https://github.com/matrix-org/synapse/issues/7037))
-  - Stop sending m.room.aliases events during room creation and upgrade. ([\#6941](https://github.com/matrix-org/synapse/issues/6941))
-  - Synapse no longer uses room alias events to calculate room names for push notifications. ([\#6966](https://github.com/matrix-org/synapse/issues/6966))
-  - The room list endpoint no longer returns a list of aliases. ([\#6970](https://github.com/matrix-org/synapse/issues/6970))
-  - Remove special handling of aliases events from [MSC2260](https://github.com/matrix-org/matrix-doc/pull/2260) added in v1.10.0rc1. ([\#7034](https://github.com/matrix-org/synapse/issues/7034))
-- Expose the `synctl`, `hash_password` and `generate_config` commands in the snapcraft package. Contributed by @devec0. ([\#6315](https://github.com/matrix-org/synapse/issues/6315))
-- Check that server_name is correctly set before running database updates. ([\#6982](https://github.com/matrix-org/synapse/issues/6982))
-- Break down monthly active users by `appservice_id` and emit via Prometheus. ([\#7030](https://github.com/matrix-org/synapse/issues/7030))
-- Render a configurable and comprehensible error page if something goes wrong during the SAML2 authentication process. ([\#7058](https://github.com/matrix-org/synapse/issues/7058), [\#7067](https://github.com/matrix-org/synapse/issues/7067))
-- Add an optional parameter to control whether other sessions are logged out when a user's password is modified. ([\#7085](https://github.com/matrix-org/synapse/issues/7085))
-- Add prometheus metrics for the number of active pushers. ([\#7103](https://github.com/matrix-org/synapse/issues/7103), [\#7106](https://github.com/matrix-org/synapse/issues/7106))
-- Improve performance when making HTTPS requests to sygnal, sydent, etc, by sharing the SSL context object between connections. ([\#7094](https://github.com/matrix-org/synapse/issues/7094))
-
-
-Bugfixes
---------
-
-- When a user's profile is updated via the admin API, also generate a displayname/avatar update for that user in each room. ([\#6572](https://github.com/matrix-org/synapse/issues/6572))
-- Fix a couple of bugs in email configuration handling. ([\#6962](https://github.com/matrix-org/synapse/issues/6962))
-- Fix an issue affecting worker-based deployments where replication would stop working, necessitating a full restart, after joining a large room. ([\#6967](https://github.com/matrix-org/synapse/issues/6967))
-- Fix `duplicate key` error which was logged when rejoining a room over federation. ([\#6968](https://github.com/matrix-org/synapse/issues/6968))
-- Prevent user from setting 'deactivated' to anything other than a bool on the v2 PUT /users Admin API. ([\#6990](https://github.com/matrix-org/synapse/issues/6990))
-- Fix py35-old CI by using native tox package. ([\#7018](https://github.com/matrix-org/synapse/issues/7018))
-- Fix a bug causing `org.matrix.dummy_event` to be included in responses from `/sync`. ([\#7035](https://github.com/matrix-org/synapse/issues/7035))
-- Fix a bug that renders UTF-8 text files incorrectly when loaded from media. Contributed by @TheStranjer. ([\#7044](https://github.com/matrix-org/synapse/issues/7044))
-- Fix a bug that would cause Synapse to respond with an error about event visibility if a client tried to request the state of a room at a given token. ([\#7066](https://github.com/matrix-org/synapse/issues/7066))
-- Repair a data-corruption issue which was introduced in Synapse 1.10, and fixed in Synapse 1.11, and which could cause `/sync` to return with 404 errors about missing events and unknown rooms. ([\#7070](https://github.com/matrix-org/synapse/issues/7070))
-- Fix a bug causing account validity renewal emails to be sent even if the feature is turned off in some cases. ([\#7074](https://github.com/matrix-org/synapse/issues/7074))
-
-
-Improved Documentation
-----------------------
-
-- Updated CentOS8 install instructions. Contributed by Richard Kellner. ([\#6925](https://github.com/matrix-org/synapse/issues/6925))
-- Fix `POSTGRES_INITDB_ARGS` in the `contrib/docker/docker-compose.yml` example docker-compose configuration. ([\#6984](https://github.com/matrix-org/synapse/issues/6984))
-- Change date in [INSTALL.md](./INSTALL.md#tls-certificates) for last date of getting TLS certificates to November 2019. ([\#7015](https://github.com/matrix-org/synapse/issues/7015))
-- Document that the fallback auth endpoints must be routed to the same worker node as the register endpoints. ([\#7048](https://github.com/matrix-org/synapse/issues/7048))
-
-
-Deprecations and Removals
--------------------------
-
-- Remove the unused query_auth federation endpoint per [MSC2451](https://github.com/matrix-org/matrix-doc/pull/2451). ([\#7026](https://github.com/matrix-org/synapse/issues/7026))
-
-
-Internal Changes
-----------------
-
-- Add type hints to `logging/context.py`. ([\#6309](https://github.com/matrix-org/synapse/issues/6309))
-- Add some clarifications to `README.md` in the database schema directory. ([\#6615](https://github.com/matrix-org/synapse/issues/6615))
-- Refactoring work in preparation for changing the event redaction algorithm. ([\#6874](https://github.com/matrix-org/synapse/issues/6874), [\#6875](https://github.com/matrix-org/synapse/issues/6875), [\#6983](https://github.com/matrix-org/synapse/issues/6983), [\#7003](https://github.com/matrix-org/synapse/issues/7003))
-- Improve performance of v2 state resolution for large rooms. ([\#6952](https://github.com/matrix-org/synapse/issues/6952), [\#7095](https://github.com/matrix-org/synapse/issues/7095))
-- Reduce time spent doing GC, by freezing objects on startup. ([\#6953](https://github.com/matrix-org/synapse/issues/6953))
-- Minor perfermance fixes to `get_auth_chain_ids`. ([\#6954](https://github.com/matrix-org/synapse/issues/6954))
-- Don't record remote cross-signing keys in the `devices` table. ([\#6956](https://github.com/matrix-org/synapse/issues/6956))
-- Use flake8-comprehensions to enforce good hygiene of list/set/dict comprehensions. ([\#6957](https://github.com/matrix-org/synapse/issues/6957))
-- Merge worker apps together. ([\#6964](https://github.com/matrix-org/synapse/issues/6964), [\#7002](https://github.com/matrix-org/synapse/issues/7002), [\#7055](https://github.com/matrix-org/synapse/issues/7055), [\#7104](https://github.com/matrix-org/synapse/issues/7104))
-- Remove redundant `store_room` call from `FederationHandler._process_received_pdu`. ([\#6979](https://github.com/matrix-org/synapse/issues/6979))
-- Update warning for incorrect database collation/ctype to include link to documentation. ([\#6985](https://github.com/matrix-org/synapse/issues/6985))
-- Add some type annotations to the database storage classes. ([\#6987](https://github.com/matrix-org/synapse/issues/6987))
-- Port `synapse.handlers.presence` to async/await. ([\#6991](https://github.com/matrix-org/synapse/issues/6991), [\#7019](https://github.com/matrix-org/synapse/issues/7019))
-- Add some type annotations to the federation base & client classes. ([\#6995](https://github.com/matrix-org/synapse/issues/6995))
-- Port `synapse.rest.keys` to async/await. ([\#7020](https://github.com/matrix-org/synapse/issues/7020))
-- Add a type check to `is_verified` when processing room keys. ([\#7045](https://github.com/matrix-org/synapse/issues/7045))
-- Add type annotations and comments to the auth handler. ([\#7063](https://github.com/matrix-org/synapse/issues/7063))
-
-
-Synapse 1.11.1 (2020-03-03)
-===========================
-
-This release includes a security fix impacting installations using Single Sign-On (i.e. SAML2 or CAS) for authentication. Administrators of such installations are encouraged to upgrade as soon as possible.
-
-The release also includes fixes for a couple of other bugs.
-
-Bugfixes
---------
-
-- Add a confirmation step to the SSO login flow before redirecting users to the redirect URL. ([b2bd54a2](https://github.com/matrix-org/synapse/commit/b2bd54a2e31d9a248f73fadb184ae9b4cbdb49f9), [65c73cdf](https://github.com/matrix-org/synapse/commit/65c73cdfec1876a9fec2fd2c3a74923cd146fe0b), [a0178df1](https://github.com/matrix-org/synapse/commit/a0178df10422a76fd403b82d2b2a4ed28a9a9d1e))
-- Fixed set a user as an admin with the admin API `PUT /_synapse/admin/v2/users/<user_id>`. Contributed by @dklimpel. ([\#6910](https://github.com/matrix-org/synapse/issues/6910))
-- Fix bug introduced in Synapse 1.11.0 which sometimes caused errors when joining rooms over federation, with `'coroutine' object has no attribute 'event_id'`. ([\#6996](https://github.com/matrix-org/synapse/issues/6996))
-
-
-Synapse 1.11.0 (2020-02-21)
-===========================
-
-Improved Documentation
-----------------------
-
-- Small grammatical fixes to the ACME v1 deprecation notice. ([\#6944](https://github.com/matrix-org/synapse/issues/6944))
-
-
-Synapse 1.11.0rc1 (2020-02-19)
-==============================
-
-Features
---------
-
-- Admin API to add or modify threepids of user accounts. ([\#6769](https://github.com/matrix-org/synapse/issues/6769))
-- Limit the number of events that can be requested by the backfill federation API to 100. ([\#6864](https://github.com/matrix-org/synapse/issues/6864))
-- Add ability to run some group APIs on workers. ([\#6866](https://github.com/matrix-org/synapse/issues/6866))
-- Reject device display names over 100 characters in length to prevent abuse. ([\#6882](https://github.com/matrix-org/synapse/issues/6882))
-- Add ability to route federation user device queries to workers. ([\#6873](https://github.com/matrix-org/synapse/issues/6873))
-- The result of a user directory search can now be filtered via the spam checker. ([\#6888](https://github.com/matrix-org/synapse/issues/6888))
-- Implement new `GET /_matrix/client/unstable/org.matrix.msc2432/rooms/{roomId}/aliases` endpoint as per [MSC2432](https://github.com/matrix-org/matrix-doc/pull/2432). ([\#6939](https://github.com/matrix-org/synapse/issues/6939), [\#6948](https://github.com/matrix-org/synapse/issues/6948), [\#6949](https://github.com/matrix-org/synapse/issues/6949))
-- Stop sending `m.room.alias` events wheng adding / removing aliases. Check `alt_aliases` in the latest `m.room.canonical_alias` event when deleting an alias. ([\#6904](https://github.com/matrix-org/synapse/issues/6904))
-- Change the default power levels of invites, tombstones and server ACLs for new rooms. ([\#6834](https://github.com/matrix-org/synapse/issues/6834))
-
-Bugfixes
---------
-
-- Fixed third party event rules function `on_create_room`'s return value being ignored. ([\#6781](https://github.com/matrix-org/synapse/issues/6781))
-- Allow URL-encoded User IDs on `/_synapse/admin/v2/users/<user_id>[/admin]` endpoints. Thanks to @NHAS for reporting. ([\#6825](https://github.com/matrix-org/synapse/issues/6825))
-- Fix Synapse refusing to start if `federation_certificate_verification_whitelist` option is blank. ([\#6849](https://github.com/matrix-org/synapse/issues/6849))
-- Fix errors from logging in the purge jobs related to the message retention policies support. ([\#6945](https://github.com/matrix-org/synapse/issues/6945))
-- Return a 404 instead of 200 for querying information of a non-existant user through the admin API. ([\#6901](https://github.com/matrix-org/synapse/issues/6901))
-
-
-Updates to the Docker image
----------------------------
-
-- The deprecated "generate-config-on-the-fly" mode is no longer supported. ([\#6918](https://github.com/matrix-org/synapse/issues/6918))
-
-
-Improved Documentation
-----------------------
-
-- Add details of PR merge strategy to contributing docs. ([\#6846](https://github.com/matrix-org/synapse/issues/6846))
-- Spell out that the last event sent to a room won't be deleted by a purge. ([\#6891](https://github.com/matrix-org/synapse/issues/6891))
-- Update Synapse's documentation to warn about the deprecation of ACME v1. ([\#6905](https://github.com/matrix-org/synapse/issues/6905), [\#6907](https://github.com/matrix-org/synapse/issues/6907), [\#6909](https://github.com/matrix-org/synapse/issues/6909))
-- Add documentation for the spam checker. ([\#6906](https://github.com/matrix-org/synapse/issues/6906))
-- Fix worker docs to point `/publicised_groups` API correctly. ([\#6938](https://github.com/matrix-org/synapse/issues/6938))
-- Clean up and update docs on setting up federation. ([\#6940](https://github.com/matrix-org/synapse/issues/6940))
-- Add a warning about indentation to generated configuration files. ([\#6920](https://github.com/matrix-org/synapse/issues/6920))
-- Databases created using the compose file in contrib/docker will now always have correct encoding and locale settings. Contributed by Fridtjof Mund. ([\#6921](https://github.com/matrix-org/synapse/issues/6921))
-- Update pip install directions in readme to avoid error when using zsh. ([\#6855](https://github.com/matrix-org/synapse/issues/6855))
-
-
-Deprecations and Removals
--------------------------
-
-- Remove `m.lazy_load_members` from `unstable_features` since lazy loading is in the stable Client-Server API version r0.5.0. ([\#6877](https://github.com/matrix-org/synapse/issues/6877))
-
-
-Internal Changes
-----------------
-
-- Add type hints to `SyncHandler`. ([\#6821](https://github.com/matrix-org/synapse/issues/6821))
-- Refactoring work in preparation for changing the event redaction algorithm. ([\#6823](https://github.com/matrix-org/synapse/issues/6823), [\#6827](https://github.com/matrix-org/synapse/issues/6827), [\#6854](https://github.com/matrix-org/synapse/issues/6854), [\#6856](https://github.com/matrix-org/synapse/issues/6856), [\#6857](https://github.com/matrix-org/synapse/issues/6857), [\#6858](https://github.com/matrix-org/synapse/issues/6858))
-- Fix stacktraces when using `ObservableDeferred` and async/await. ([\#6836](https://github.com/matrix-org/synapse/issues/6836))
-- Port much of `synapse.handlers.federation` to async/await. ([\#6837](https://github.com/matrix-org/synapse/issues/6837), [\#6840](https://github.com/matrix-org/synapse/issues/6840))
-- Populate `rooms.room_version` database column at startup, rather than in a background update. ([\#6847](https://github.com/matrix-org/synapse/issues/6847))
-- Reduce amount we log at `INFO` level. ([\#6833](https://github.com/matrix-org/synapse/issues/6833), [\#6862](https://github.com/matrix-org/synapse/issues/6862))
-- Remove unused `get_room_stats_state` method. ([\#6869](https://github.com/matrix-org/synapse/issues/6869))
-- Add typing to `synapse.federation.sender` and port to async/await. ([\#6871](https://github.com/matrix-org/synapse/issues/6871))
-- Refactor `_EventInternalMetadata` object to improve type safety. ([\#6872](https://github.com/matrix-org/synapse/issues/6872))
-- Add an additional entry to the SyTest blacklist for worker mode. ([\#6883](https://github.com/matrix-org/synapse/issues/6883))
-- Fix the use of sed in the linting scripts when using BSD sed. ([\#6887](https://github.com/matrix-org/synapse/issues/6887))
-- Add type hints to the spam checker module. ([\#6915](https://github.com/matrix-org/synapse/issues/6915))
-- Convert the directory handler tests to use HomeserverTestCase. ([\#6919](https://github.com/matrix-org/synapse/issues/6919))
-- Increase DB/CPU perf of `_is_server_still_joined` check. ([\#6936](https://github.com/matrix-org/synapse/issues/6936))
-- Tiny optimisation for incoming HTTP request dispatch. ([\#6950](https://github.com/matrix-org/synapse/issues/6950))
-
-
-Synapse 1.10.1 (2020-02-17)
-===========================
-
-Bugfixes
---------
-
-- Fix a bug introduced in Synapse 1.10.0 which would cause room state to be cleared in the database if Synapse was upgraded direct from 1.2.1 or earlier to 1.10.0. ([\#6924](https://github.com/matrix-org/synapse/issues/6924))
-
-
-Synapse 1.10.0 (2020-02-12)
-===========================
-
-**WARNING to client developers**: As of this release Synapse validates `client_secret` parameters in the Client-Server API as per the spec. See [\#6766](https://github.com/matrix-org/synapse/issues/6766) for details.
-
-Updates to the Docker image
----------------------------
-
-- Update the docker images to Alpine Linux 3.11. ([\#6897](https://github.com/matrix-org/synapse/issues/6897))
-
-
-Synapse 1.10.0rc5 (2020-02-11)
-==============================
-
-Bugfixes
---------
-
-- Fix the filtering introduced in 1.10.0rc3 to also apply to the state blocks returned by `/sync`. ([\#6884](https://github.com/matrix-org/synapse/issues/6884))
-
-Synapse 1.10.0rc4 (2020-02-11)
-==============================
-
-This release candidate was built incorrectly and is superceded by 1.10.0rc5.
-
-Synapse 1.10.0rc3 (2020-02-10)
-==============================
-
-Features
---------
-
-- Filter out `m.room.aliases` from the CS API to mitigate abuse while a better solution is specced. ([\#6878](https://github.com/matrix-org/synapse/issues/6878))
-
-
-Internal Changes
-----------------
-
-- Fix continuous integration failures with old versions of `pip`, which were introduced by a release of the `zipp` library. ([\#6880](https://github.com/matrix-org/synapse/issues/6880))
-
-
-Synapse 1.10.0rc2 (2020-02-06)
-==============================
-
-Bugfixes
---------
-
-- Fix an issue with cross-signing where device signatures were not sent to remote servers. ([\#6844](https://github.com/matrix-org/synapse/issues/6844))
-- Fix to the unknown remote device detection which was introduced in 1.10.rc1. ([\#6848](https://github.com/matrix-org/synapse/issues/6848))
-
-
-Internal Changes
-----------------
-
-- Detect unexpected sender keys on remote encrypted events and resync device lists. ([\#6850](https://github.com/matrix-org/synapse/issues/6850))
-
-
-Synapse 1.10.0rc1 (2020-01-31)
-==============================
-
-Features
---------
-
-- Add experimental support for updated authorization rules for aliases events, from [MSC2260](https://github.com/matrix-org/matrix-doc/pull/2260). ([\#6787](https://github.com/matrix-org/synapse/issues/6787), [\#6790](https://github.com/matrix-org/synapse/issues/6790), [\#6794](https://github.com/matrix-org/synapse/issues/6794))
-
-
-Bugfixes
---------
-
-- Warn if postgres database has a non-C locale, as that can cause issues when upgrading locales (e.g. due to upgrading OS). ([\#6734](https://github.com/matrix-org/synapse/issues/6734))
-- Minor fixes to `PUT /_synapse/admin/v2/users` admin api. ([\#6761](https://github.com/matrix-org/synapse/issues/6761))
-- Validate `client_secret` parameter using the regex provided by the Client-Server API, temporarily allowing `:` characters for older clients. The `:` character will be removed in a future release. ([\#6767](https://github.com/matrix-org/synapse/issues/6767))
-- Fix persisting redaction events that have been redacted (or otherwise don't have a redacts key). ([\#6771](https://github.com/matrix-org/synapse/issues/6771))
-- Fix outbound federation request metrics. ([\#6795](https://github.com/matrix-org/synapse/issues/6795))
-- Fix bug where querying a remote user's device keys that weren't cached resulted in only returning a single device. ([\#6796](https://github.com/matrix-org/synapse/issues/6796))
-- Fix race in federation sender worker that delayed sending of device updates. ([\#6799](https://github.com/matrix-org/synapse/issues/6799), [\#6800](https://github.com/matrix-org/synapse/issues/6800))
-- Fix bug where Synapse didn't invalidate cache of remote users' devices when Synapse left a room. ([\#6801](https://github.com/matrix-org/synapse/issues/6801))
-- Fix waking up other workers when remote server is detected to have come back online. ([\#6811](https://github.com/matrix-org/synapse/issues/6811))
-
-
-Improved Documentation
-----------------------
-
-- Clarify documentation related to `user_dir` and `federation_reader` workers. ([\#6775](https://github.com/matrix-org/synapse/issues/6775))
-
-
-Internal Changes
-----------------
-
-- Record room versions in the `rooms` table. ([\#6729](https://github.com/matrix-org/synapse/issues/6729), [\#6788](https://github.com/matrix-org/synapse/issues/6788), [\#6810](https://github.com/matrix-org/synapse/issues/6810))
-- Propagate cache invalidates from workers to other workers. ([\#6748](https://github.com/matrix-org/synapse/issues/6748))
-- Remove some unnecessary admin handler abstraction methods. ([\#6751](https://github.com/matrix-org/synapse/issues/6751))
-- Add some debugging for media storage providers. ([\#6757](https://github.com/matrix-org/synapse/issues/6757))
-- Detect unknown remote devices and mark cache as stale. ([\#6776](https://github.com/matrix-org/synapse/issues/6776), [\#6819](https://github.com/matrix-org/synapse/issues/6819))
-- Attempt to resync remote users' devices when detected as stale. ([\#6786](https://github.com/matrix-org/synapse/issues/6786))
-- Delete current state from the database when server leaves a room. ([\#6792](https://github.com/matrix-org/synapse/issues/6792))
-- When a client asks for a remote user's device keys check if the local cache for that user has been marked as potentially stale. ([\#6797](https://github.com/matrix-org/synapse/issues/6797))
-- Add background update to clean out left rooms from current state. ([\#6802](https://github.com/matrix-org/synapse/issues/6802), [\#6816](https://github.com/matrix-org/synapse/issues/6816))
-- Refactoring work in preparation for changing the event redaction algorithm. ([\#6803](https://github.com/matrix-org/synapse/issues/6803), [\#6805](https://github.com/matrix-org/synapse/issues/6805), [\#6806](https://github.com/matrix-org/synapse/issues/6806), [\#6807](https://github.com/matrix-org/synapse/issues/6807), [\#6820](https://github.com/matrix-org/synapse/issues/6820))
-
-
-Synapse 1.9.1 (2020-01-28)
-==========================
-
-Bugfixes
---------
-
-- Fix bug where setting `mau_limit_reserved_threepids` config would cause Synapse to refuse to start. ([\#6793](https://github.com/matrix-org/synapse/issues/6793))
-
-
-Synapse 1.9.0 (2020-01-23)
-==========================
-
-**WARNING**: As of this release, Synapse no longer supports versions of SQLite before 3.11, and will refuse to start when configured to use an older version. Administrators are recommended to migrate their database to Postgres (see instructions [here](docs/postgres.md)).
-
-If your Synapse deployment uses workers, note that the reverse-proxy configurations for the `synapse.app.media_repository`, `synapse.app.federation_reader` and `synapse.app.event_creator` workers have changed, with the addition of a few paths (see the updated configurations [here](docs/workers.md#available-worker-applications)). Existing configurations will continue to work.
-
-
-Improved Documentation
-----------------------
-
-- Fix endpoint documentation for the List Rooms admin API. ([\#6770](https://github.com/matrix-org/synapse/issues/6770))
-
-
-Synapse 1.9.0rc1 (2020-01-22)
-=============================
-
-Features
---------
-
-- Allow admin to create or modify a user. Contributed by Awesome Technologies Innovationslabor GmbH. ([\#5742](https://github.com/matrix-org/synapse/issues/5742))
-- Add new quarantine media admin APIs to quarantine by media ID or by user who uploaded the media. ([\#6681](https://github.com/matrix-org/synapse/issues/6681), [\#6756](https://github.com/matrix-org/synapse/issues/6756))
-- Add `org.matrix.e2e_cross_signing` to `unstable_features` in `/versions` as per [MSC1756](https://github.com/matrix-org/matrix-doc/pull/1756). ([\#6712](https://github.com/matrix-org/synapse/issues/6712))
-- Add a new admin API to list and filter rooms on the server. ([\#6720](https://github.com/matrix-org/synapse/issues/6720))
-
-
-Bugfixes
---------
-
-- Correctly proxy HTTP errors due to API calls to remote group servers. ([\#6654](https://github.com/matrix-org/synapse/issues/6654))
-- Fix media repo admin APIs when using a media worker. ([\#6664](https://github.com/matrix-org/synapse/issues/6664))
-- Fix "CRITICAL" errors being logged when a request is received for a uri containing non-ascii characters. ([\#6682](https://github.com/matrix-org/synapse/issues/6682))
-- Fix a bug where we would assign a numeric user ID if somebody tried registering with an empty username. ([\#6690](https://github.com/matrix-org/synapse/issues/6690))
-- Fix `purge_room` admin API. ([\#6711](https://github.com/matrix-org/synapse/issues/6711))
-- Fix a bug causing Synapse to not always purge quiet rooms with a low `max_lifetime` in their message retention policies when running the automated purge jobs. ([\#6714](https://github.com/matrix-org/synapse/issues/6714))
-- Fix the `synapse_port_db` not correctly running background updates. Thanks @tadzik for reporting. ([\#6718](https://github.com/matrix-org/synapse/issues/6718))
-- Fix changing password via user admin API. ([\#6730](https://github.com/matrix-org/synapse/issues/6730))
-- Fix `/events/:event_id` deprecated API. ([\#6731](https://github.com/matrix-org/synapse/issues/6731))
-- Fix monthly active user limiting support for worker mode, fixes [#4639](https://github.com/matrix-org/synapse/issues/4639). ([\#6742](https://github.com/matrix-org/synapse/issues/6742))
-- Fix bug when setting `account_validity` to an empty block in the config. Thanks to @Sorunome for reporting. ([\#6747](https://github.com/matrix-org/synapse/issues/6747))
-- Fix `AttributeError: 'NoneType' object has no attribute 'get'` in `hash_password` when configuration has an empty `password_config`. Contributed by @ivilata. ([\#6753](https://github.com/matrix-org/synapse/issues/6753))
-- Fix the `docker-compose.yaml` overriding the entire `/etc` folder of the container. Contributed by Fabian Meyer. ([\#6656](https://github.com/matrix-org/synapse/issues/6656))
-
-
-Improved Documentation
-----------------------
-
-- Fix a typo in the configuration example for purge jobs in the sample configuration file. ([\#6621](https://github.com/matrix-org/synapse/issues/6621))
-- Add complete documentation of the message retention policies support. ([\#6624](https://github.com/matrix-org/synapse/issues/6624), [\#6665](https://github.com/matrix-org/synapse/issues/6665))
-- Add some helpful tips about changelog entries to the GitHub pull request template. ([\#6663](https://github.com/matrix-org/synapse/issues/6663))
-- Clarify the `account_validity` and `email` sections of the sample configuration. ([\#6685](https://github.com/matrix-org/synapse/issues/6685))
-- Add more endpoints to the documentation for Synapse workers. ([\#6698](https://github.com/matrix-org/synapse/issues/6698))
-
-
-Deprecations and Removals
--------------------------
-
-- Synapse no longer supports versions of SQLite before 3.11, and will refuse to start when configured to use an older version. Administrators are recommended to migrate their database to Postgres (see instructions [here](docs/postgres.md)). ([\#6675](https://github.com/matrix-org/synapse/issues/6675))
-
-
-Internal Changes
-----------------
-
-- Add `local_current_membership` table for tracking local user membership state in rooms. ([\#6655](https://github.com/matrix-org/synapse/issues/6655), [\#6728](https://github.com/matrix-org/synapse/issues/6728))
-- Port `synapse.replication.tcp` to async/await. ([\#6666](https://github.com/matrix-org/synapse/issues/6666))
-- Fixup `synapse.replication` to pass mypy checks. ([\#6667](https://github.com/matrix-org/synapse/issues/6667))
-- Allow `additional_resources` to implement `IResource` directly. ([\#6686](https://github.com/matrix-org/synapse/issues/6686))
-- Allow REST endpoint implementations to raise a `RedirectException`, which will redirect the user's browser to a given location. ([\#6687](https://github.com/matrix-org/synapse/issues/6687))
-- Updates and extensions to the module API. ([\#6688](https://github.com/matrix-org/synapse/issues/6688))
-- Updates to the SAML mapping provider API. ([\#6689](https://github.com/matrix-org/synapse/issues/6689), [\#6723](https://github.com/matrix-org/synapse/issues/6723))
-- Remove redundant `RegistrationError` class. ([\#6691](https://github.com/matrix-org/synapse/issues/6691))
-- Don't block processing of incoming EDUs behind processing PDUs in the same transaction. ([\#6697](https://github.com/matrix-org/synapse/issues/6697))
-- Remove duplicate check for the `session` query parameter on the `/auth/xxx/fallback/web` Client-Server endpoint. ([\#6702](https://github.com/matrix-org/synapse/issues/6702))
-- Attempt to retry sending a transaction when we detect a remote server has come back online, rather than waiting for a transaction to be triggered by new data. ([\#6706](https://github.com/matrix-org/synapse/issues/6706))
-- Add `StateMap` type alias to simplify types. ([\#6715](https://github.com/matrix-org/synapse/issues/6715))
-- Add a `DeltaState` to track changes to be made to current state during event persistence. ([\#6716](https://github.com/matrix-org/synapse/issues/6716))
-- Add more logging around message retention policies support. ([\#6717](https://github.com/matrix-org/synapse/issues/6717))
-- When processing a SAML response, log the assertions for easier configuration. ([\#6724](https://github.com/matrix-org/synapse/issues/6724))
-- Fixup `synapse.rest` to pass mypy. ([\#6732](https://github.com/matrix-org/synapse/issues/6732), [\#6764](https://github.com/matrix-org/synapse/issues/6764))
-- Fixup `synapse.api` to pass mypy. ([\#6733](https://github.com/matrix-org/synapse/issues/6733))
-- Allow streaming cache 'invalidate all' to workers. ([\#6749](https://github.com/matrix-org/synapse/issues/6749))
-- Remove unused CI docker compose files. ([\#6754](https://github.com/matrix-org/synapse/issues/6754))
-
-
-Synapse 1.8.0 (2020-01-09)
-==========================
-
-**WARNING**: As of this release Synapse will refuse to start if the `log_file` config option is specified. Support for the option was removed in v1.3.0.
-
-
-Bugfixes
---------
-
-- Fix `GET` request on `/_synapse/admin/v2/users` endpoint. Contributed by Awesome Technologies Innovationslabor GmbH. ([\#6563](https://github.com/matrix-org/synapse/issues/6563))
-- Fix incorrect signing of responses from the key server implementation. ([\#6657](https://github.com/matrix-org/synapse/issues/6657))
-
-
-Synapse 1.8.0rc1 (2020-01-07)
-=============================
-
-Features
---------
-
-- Add v2 APIs for the `send_join` and `send_leave` federation endpoints (as described in [MSC1802](https://github.com/matrix-org/matrix-doc/pull/1802)). ([\#6349](https://github.com/matrix-org/synapse/issues/6349))
-- Add a develop script to generate full SQL schemas. ([\#6394](https://github.com/matrix-org/synapse/issues/6394))
-- Add custom SAML username mapping functionality through an external provider plugin. ([\#6411](https://github.com/matrix-org/synapse/issues/6411))
-- Automatically delete empty groups/communities. ([\#6453](https://github.com/matrix-org/synapse/issues/6453))
-- Add option `limit_profile_requests_to_users_who_share_rooms` to prevent requirement of a local user sharing a room with another user to query their profile information. ([\#6523](https://github.com/matrix-org/synapse/issues/6523))
-- Add an `export_signing_key` script to extract the public part of signing keys when rotating them. ([\#6546](https://github.com/matrix-org/synapse/issues/6546))
-- Add experimental config option to specify multiple databases. ([\#6580](https://github.com/matrix-org/synapse/issues/6580))
-- Raise an error if someone tries to use the `log_file` config option. ([\#6626](https://github.com/matrix-org/synapse/issues/6626))
-
-
-Bugfixes
---------
-
-- Prevent redacted events from being returned during message search. ([\#6377](https://github.com/matrix-org/synapse/issues/6377), [\#6522](https://github.com/matrix-org/synapse/issues/6522))
-- Prevent error on trying to search a upgraded room when the server is not in the predecessor room. ([\#6385](https://github.com/matrix-org/synapse/issues/6385))
-- Improve performance of looking up cross-signing keys. ([\#6486](https://github.com/matrix-org/synapse/issues/6486))
-- Fix race which occasionally caused deleted devices to reappear. ([\#6514](https://github.com/matrix-org/synapse/issues/6514))
-- Fix missing row in `device_max_stream_id` that could cause unable to decrypt errors after server restart. ([\#6555](https://github.com/matrix-org/synapse/issues/6555))
-- Fix a bug which meant that we did not send systemd notifications on startup if acme was enabled. ([\#6571](https://github.com/matrix-org/synapse/issues/6571))
-- Fix exception when fetching the `matrix.org:ed25519:auto` key. ([\#6625](https://github.com/matrix-org/synapse/issues/6625))
-- Fix bug where a moderator upgraded a room and became an admin in the new room. ([\#6633](https://github.com/matrix-org/synapse/issues/6633))
-- Fix an error which was thrown by the `PresenceHandler` `_on_shutdown` handler. ([\#6640](https://github.com/matrix-org/synapse/issues/6640))
-- Fix exceptions in the synchrotron worker log when events are rejected. ([\#6645](https://github.com/matrix-org/synapse/issues/6645))
-- Ensure that upgraded rooms are removed from the directory. ([\#6648](https://github.com/matrix-org/synapse/issues/6648))
-- Fix a bug causing Synapse not to fetch missing events when it believes it has every event in the room. ([\#6652](https://github.com/matrix-org/synapse/issues/6652))
-
-
-Improved Documentation
-----------------------
-
-- Document the Room Shutdown Admin API. ([\#6541](https://github.com/matrix-org/synapse/issues/6541))
-- Reword sections of [docs/federate.md](docs/federate.md) that explained delegation at time of Synapse 1.0 transition. ([\#6601](https://github.com/matrix-org/synapse/issues/6601))
-- Added the section 'Configuration' in [docs/turn-howto.md](docs/turn-howto.md). ([\#6614](https://github.com/matrix-org/synapse/issues/6614))
-
-
-Deprecations and Removals
--------------------------
-
-- Remove redundant code from event authorisation implementation. ([\#6502](https://github.com/matrix-org/synapse/issues/6502))
-- Remove unused, undocumented `/_matrix/content` API. ([\#6628](https://github.com/matrix-org/synapse/issues/6628))
-
-
-Internal Changes
-----------------
-
-- Add *experimental* support for multiple physical databases and split out state storage to separate data store. ([\#6245](https://github.com/matrix-org/synapse/issues/6245), [\#6510](https://github.com/matrix-org/synapse/issues/6510), [\#6511](https://github.com/matrix-org/synapse/issues/6511), [\#6513](https://github.com/matrix-org/synapse/issues/6513), [\#6564](https://github.com/matrix-org/synapse/issues/6564), [\#6565](https://github.com/matrix-org/synapse/issues/6565))
-- Port sections of code base to async/await. ([\#6496](https://github.com/matrix-org/synapse/issues/6496), [\#6504](https://github.com/matrix-org/synapse/issues/6504), [\#6505](https://github.com/matrix-org/synapse/issues/6505), [\#6517](https://github.com/matrix-org/synapse/issues/6517), [\#6559](https://github.com/matrix-org/synapse/issues/6559), [\#6647](https://github.com/matrix-org/synapse/issues/6647), [\#6653](https://github.com/matrix-org/synapse/issues/6653))
-- Remove `SnapshotCache` in favour of `ResponseCache`. ([\#6506](https://github.com/matrix-org/synapse/issues/6506))
-- Silence mypy errors for files outside those specified. ([\#6512](https://github.com/matrix-org/synapse/issues/6512))
-- Clean up some logging when handling incoming events over federation. ([\#6515](https://github.com/matrix-org/synapse/issues/6515))
-- Test more folders against mypy. ([\#6534](https://github.com/matrix-org/synapse/issues/6534))
-- Update `mypy` to new version. ([\#6537](https://github.com/matrix-org/synapse/issues/6537))
-- Adjust the sytest blacklist for worker mode. ([\#6538](https://github.com/matrix-org/synapse/issues/6538))
-- Remove unused `get_pagination_rows` methods from `EventSource` classes. ([\#6557](https://github.com/matrix-org/synapse/issues/6557))
-- Clean up logs from the push notifier at startup. ([\#6558](https://github.com/matrix-org/synapse/issues/6558))
-- Improve diagnostics on database upgrade failure. ([\#6570](https://github.com/matrix-org/synapse/issues/6570))
-- Reduce the reconnect time when worker replication fails, to make it easier to catch up. ([\#6617](https://github.com/matrix-org/synapse/issues/6617))
-- Simplify http handling by removing redundant `SynapseRequestFactory`. ([\#6619](https://github.com/matrix-org/synapse/issues/6619))
-- Add a workaround for synapse raising exceptions when fetching the notary's own key from the notary. ([\#6620](https://github.com/matrix-org/synapse/issues/6620))
-- Automate generation of the sample log config. ([\#6627](https://github.com/matrix-org/synapse/issues/6627))
-- Simplify event creation code by removing redundant queries on the `event_reference_hashes` table. ([\#6629](https://github.com/matrix-org/synapse/issues/6629))
-- Fix errors when `frozen_dicts` are enabled. ([\#6642](https://github.com/matrix-org/synapse/issues/6642))
-
-
-Synapse 1.7.3 (2019-12-31)
-==========================
-
-This release fixes a long-standing bug in the state resolution algorithm.
-
-Bugfixes
---------
-
-- Fix exceptions caused by state resolution choking on malformed events. ([\#6608](https://github.com/matrix-org/synapse/issues/6608))
-
-
-Synapse 1.7.2 (2019-12-20)
-==========================
-
-This release fixes some regressions introduced in Synapse 1.7.0 and 1.7.1.
-
-Bugfixes
---------
-
-- Fix a regression introduced in Synapse 1.7.1 which caused errors when attempting to backfill rooms over federation. ([\#6576](https://github.com/matrix-org/synapse/issues/6576))
-- Fix a bug introduced in Synapse 1.7.0 which caused an error on startup when upgrading from versions before 1.3.0. ([\#6578](https://github.com/matrix-org/synapse/issues/6578))
-
-
-Synapse 1.7.1 (2019-12-18)
-==========================
-
-This release includes several security fixes as well as a fix to a bug exposed by the security fixes. Administrators are encouraged to upgrade as soon as possible.
-
-Security updates
-----------------
-
-- Fix a bug which could cause room events to be incorrectly authorized using events from a different room. ([\#6501](https://github.com/matrix-org/synapse/issues/6501), [\#6503](https://github.com/matrix-org/synapse/issues/6503), [\#6521](https://github.com/matrix-org/synapse/issues/6521), [\#6524](https://github.com/matrix-org/synapse/issues/6524), [\#6530](https://github.com/matrix-org/synapse/issues/6530), [\#6531](https://github.com/matrix-org/synapse/issues/6531))
-- Fix a bug causing responses to the `/context` client endpoint to not use the pruned version of the event. ([\#6553](https://github.com/matrix-org/synapse/issues/6553))
-- Fix a cause of state resets in room versions 2 onwards. ([\#6556](https://github.com/matrix-org/synapse/issues/6556), [\#6560](https://github.com/matrix-org/synapse/issues/6560))
-
-Bugfixes
---------
-
-- Fix a bug which could cause the federation server to incorrectly return errors when handling certain obscure event graphs. ([\#6526](https://github.com/matrix-org/synapse/issues/6526), [\#6527](https://github.com/matrix-org/synapse/issues/6527))
-
-Synapse 1.7.0 (2019-12-13)
-==========================
-
-This release changes the default settings so that only local authenticated users can query the server's room directory. See the [upgrade notes](UPGRADE.rst#upgrading-to-v170) for details.
-
-Support for SQLite versions before 3.11 is now deprecated. A future release will refuse to start if used with an SQLite version before 3.11.
-
-Administrators are reminded that SQLite should not be used for production instances. Instructions for migrating to Postgres are available [here](docs/postgres.md). A future release of synapse will, by default, disable federation for servers using SQLite.
-
-No significant changes since 1.7.0rc2.
-
-
-Synapse 1.7.0rc2 (2019-12-11)
-=============================
-
-Bugfixes
---------
-
-- Fix incorrect error message for invalid requests when setting user's avatar URL. ([\#6497](https://github.com/matrix-org/synapse/issues/6497))
-- Fix support for SQLite 3.7. ([\#6499](https://github.com/matrix-org/synapse/issues/6499))
-- Fix regression where sending email push would not work when using a pusher worker. ([\#6507](https://github.com/matrix-org/synapse/issues/6507), [\#6509](https://github.com/matrix-org/synapse/issues/6509))
-
-
-Synapse 1.7.0rc1 (2019-12-09)
-=============================
-
-Features
---------
-
-- Implement per-room message retention policies. ([\#5815](https://github.com/matrix-org/synapse/issues/5815), [\#6436](https://github.com/matrix-org/synapse/issues/6436))
-- Add etag and count fields to key backup endpoints to help clients guess if there are new keys. ([\#5858](https://github.com/matrix-org/synapse/issues/5858))
-- Add `/admin/v2/users` endpoint with pagination. Contributed by Awesome Technologies Innovationslabor GmbH. ([\#5925](https://github.com/matrix-org/synapse/issues/5925))
-- Require User-Interactive Authentication for `/account/3pid/add`, meaning the user's password will be required to add a third-party ID to their account. ([\#6119](https://github.com/matrix-org/synapse/issues/6119))
-- Implement the `/_matrix/federation/unstable/net.atleastfornow/state/<context>` API as drafted in MSC2314. ([\#6176](https://github.com/matrix-org/synapse/issues/6176))
-- Configure privacy-preserving settings by default for the room directory. ([\#6355](https://github.com/matrix-org/synapse/issues/6355))
-- Add ephemeral messages support by partially implementing [MSC2228](https://github.com/matrix-org/matrix-doc/pull/2228). ([\#6409](https://github.com/matrix-org/synapse/issues/6409))
-- Add support for [MSC 2367](https://github.com/matrix-org/matrix-doc/pull/2367), which allows specifying a reason on all membership events. ([\#6434](https://github.com/matrix-org/synapse/issues/6434))
-
-
-Bugfixes
---------
-
-- Transfer non-standard power levels on room upgrade. ([\#6237](https://github.com/matrix-org/synapse/issues/6237))
-- Fix error from the Pillow library when uploading RGBA images. ([\#6241](https://github.com/matrix-org/synapse/issues/6241))
-- Correctly apply the event filter to the `state`, `events_before` and `events_after` fields in the response to `/context` requests. ([\#6329](https://github.com/matrix-org/synapse/issues/6329))
-- Fix caching devices for remote users when using workers, so that we don't attempt to refetch (and potentially fail) each time a user requests devices. ([\#6332](https://github.com/matrix-org/synapse/issues/6332))
-- Prevent account data syncs getting lost across TCP replication. ([\#6333](https://github.com/matrix-org/synapse/issues/6333))
-- Fix bug: TypeError in `register_user()` while using LDAP auth module. ([\#6406](https://github.com/matrix-org/synapse/issues/6406))
-- Fix an intermittent exception when handling read-receipts. ([\#6408](https://github.com/matrix-org/synapse/issues/6408))
-- Fix broken guest registration when there are existing blocks of numeric user IDs. ([\#6420](https://github.com/matrix-org/synapse/issues/6420))
-- Fix startup error when http proxy is defined. ([\#6421](https://github.com/matrix-org/synapse/issues/6421))
-- Fix error when using synapse_port_db on a vanilla synapse db. ([\#6449](https://github.com/matrix-org/synapse/issues/6449))
-- Fix uploading multiple cross signing signatures for the same user. ([\#6451](https://github.com/matrix-org/synapse/issues/6451))
-- Fix bug which lead to exceptions being thrown in a loop when a cross-signed device is deleted. ([\#6462](https://github.com/matrix-org/synapse/issues/6462))
-- Fix `synapse_port_db` not exiting with a 0 code if something went wrong during the port process. ([\#6470](https://github.com/matrix-org/synapse/issues/6470))
-- Improve sanity-checking when receiving events over federation. ([\#6472](https://github.com/matrix-org/synapse/issues/6472))
-- Fix inaccurate per-block Prometheus metrics. ([\#6491](https://github.com/matrix-org/synapse/issues/6491))
-- Fix small performance regression for sending invites. ([\#6493](https://github.com/matrix-org/synapse/issues/6493))
-- Back out cross-signing code added in Synapse 1.5.0, which caused a performance regression. ([\#6494](https://github.com/matrix-org/synapse/issues/6494))
-
-
-Improved Documentation
-----------------------
-
-- Update documentation and variables in user contributed systemd reference file. ([\#6369](https://github.com/matrix-org/synapse/issues/6369), [\#6490](https://github.com/matrix-org/synapse/issues/6490))
-- Fix link in the user directory documentation. ([\#6388](https://github.com/matrix-org/synapse/issues/6388))
-- Add build instructions to the docker readme. ([\#6390](https://github.com/matrix-org/synapse/issues/6390))
-- Switch Ubuntu package install recommendation to use python3 packages in INSTALL.md. ([\#6443](https://github.com/matrix-org/synapse/issues/6443))
-- Write some docs for the quarantine_media api. ([\#6458](https://github.com/matrix-org/synapse/issues/6458))
-- Convert CONTRIBUTING.rst to markdown (among other small fixes). ([\#6461](https://github.com/matrix-org/synapse/issues/6461))
-
-
-Deprecations and Removals
--------------------------
-
-- Remove admin/v1/users_paginate endpoint. Contributed by Awesome Technologies Innovationslabor GmbH. ([\#5925](https://github.com/matrix-org/synapse/issues/5925))
-- Remove fallback for federation with old servers which lack the /federation/v1/state_ids API. ([\#6488](https://github.com/matrix-org/synapse/issues/6488))
-
-
-Internal Changes
-----------------
-
-- Add benchmarks for structured logging and improve output performance. ([\#6266](https://github.com/matrix-org/synapse/issues/6266))
-- Improve the performance of outputting structured logging. ([\#6322](https://github.com/matrix-org/synapse/issues/6322))
-- Refactor some code in the event authentication path for clarity. ([\#6343](https://github.com/matrix-org/synapse/issues/6343), [\#6468](https://github.com/matrix-org/synapse/issues/6468), [\#6480](https://github.com/matrix-org/synapse/issues/6480))
-- Clean up some unnecessary quotation marks around the codebase. ([\#6362](https://github.com/matrix-org/synapse/issues/6362))
-- Complain on startup instead of 500'ing during runtime when `public_baseurl` isn't set when necessary. ([\#6379](https://github.com/matrix-org/synapse/issues/6379))
-- Add a test scenario to make sure room history purges don't break `/messages` in the future. ([\#6392](https://github.com/matrix-org/synapse/issues/6392))
-- Clarifications for the email configuration settings. ([\#6423](https://github.com/matrix-org/synapse/issues/6423))
-- Add more tests to the blacklist when running in worker mode. ([\#6429](https://github.com/matrix-org/synapse/issues/6429))
-- Refactor data store layer to support multiple databases in the future. ([\#6454](https://github.com/matrix-org/synapse/issues/6454), [\#6464](https://github.com/matrix-org/synapse/issues/6464), [\#6469](https://github.com/matrix-org/synapse/issues/6469), [\#6487](https://github.com/matrix-org/synapse/issues/6487))
-- Port synapse.rest.client.v1 to async/await. ([\#6482](https://github.com/matrix-org/synapse/issues/6482))
-- Port synapse.rest.client.v2_alpha to async/await. ([\#6483](https://github.com/matrix-org/synapse/issues/6483))
-- Port SyncHandler to async/await. ([\#6484](https://github.com/matrix-org/synapse/issues/6484))
-
-Synapse 1.6.1 (2019-11-28)
-==========================
-
-Security updates
-----------------
-
-This release includes a security fix ([\#6426](https://github.com/matrix-org/synapse/issues/6426), below). Administrators are encouraged to upgrade as soon as possible.
-
-Bugfixes
---------
-
-- Clean up local threepids from user on account deactivation. ([\#6426](https://github.com/matrix-org/synapse/issues/6426))
-- Fix startup error when http proxy is defined. ([\#6421](https://github.com/matrix-org/synapse/issues/6421))
-
-
-Synapse 1.6.0 (2019-11-26)
-==========================
-
-Bugfixes
---------
-
-- Fix phone home stats reporting. ([\#6418](https://github.com/matrix-org/synapse/issues/6418))
-
-
-Synapse 1.6.0rc2 (2019-11-25)
-=============================
-
-Bugfixes
---------
-
-- Fix a bug which could cause the background database update hander for event labels to get stuck in a loop raising exceptions. ([\#6407](https://github.com/matrix-org/synapse/issues/6407))
-
-
-Synapse 1.6.0rc1 (2019-11-20)
-=============================
-
-Features
---------
-
-- Add federation support for cross-signing. ([\#5727](https://github.com/matrix-org/synapse/issues/5727))
-- Increase default room version from 4 to 5, thereby enforcing server key validity period checks. ([\#6220](https://github.com/matrix-org/synapse/issues/6220))
-- Add support for outbound http proxying via http_proxy/HTTPS_PROXY env vars. ([\#6238](https://github.com/matrix-org/synapse/issues/6238))
-- Implement label-based filtering on `/sync` and `/messages` ([MSC2326](https://github.com/matrix-org/matrix-doc/pull/2326)). ([\#6301](https://github.com/matrix-org/synapse/issues/6301), [\#6310](https://github.com/matrix-org/synapse/issues/6310), [\#6340](https://github.com/matrix-org/synapse/issues/6340))
-
-
-Bugfixes
---------
-
-- Fix LruCache callback deduplication for Python 3.8. Contributed by @V02460. ([\#6213](https://github.com/matrix-org/synapse/issues/6213))
-- Remove a room from a server's public rooms list on room upgrade. ([\#6232](https://github.com/matrix-org/synapse/issues/6232), [\#6235](https://github.com/matrix-org/synapse/issues/6235))
-- Delete keys from key backup when deleting backup versions. ([\#6253](https://github.com/matrix-org/synapse/issues/6253))
-- Make notification of cross-signing signatures work with workers. ([\#6254](https://github.com/matrix-org/synapse/issues/6254))
-- Fix exception when remote servers attempt to join a room that they're not allowed to join. ([\#6278](https://github.com/matrix-org/synapse/issues/6278))
-- Prevent errors from appearing on Synapse startup if `git` is not installed. ([\#6284](https://github.com/matrix-org/synapse/issues/6284))
-- Appservice requests will no longer contain a double slash prefix when the appservice url provided ends in a slash. ([\#6306](https://github.com/matrix-org/synapse/issues/6306))
-- Fix `/purge_room` admin API. ([\#6307](https://github.com/matrix-org/synapse/issues/6307))
-- Fix the `hidden` field in the `devices` table for SQLite versions prior to 3.23.0. ([\#6313](https://github.com/matrix-org/synapse/issues/6313))
-- Fix bug which casued rejected events to be persisted with the wrong room state. ([\#6320](https://github.com/matrix-org/synapse/issues/6320))
-- Fix bug where `rc_login` ratelimiting would prematurely kick in. ([\#6335](https://github.com/matrix-org/synapse/issues/6335))
-- Prevent the server taking a long time to start up when guest registration is enabled. ([\#6338](https://github.com/matrix-org/synapse/issues/6338))
-- Fix bug where upgrading a guest account to a full user would fail when account validity is enabled. ([\#6359](https://github.com/matrix-org/synapse/issues/6359))
-- Fix `to_device` stream ID getting reset every time Synapse restarts, which had the potential to cause unable to decrypt errors. ([\#6363](https://github.com/matrix-org/synapse/issues/6363))
-- Fix permission denied error when trying to generate a config file with the docker image. ([\#6389](https://github.com/matrix-org/synapse/issues/6389))
-
-
-Improved Documentation
-----------------------
-
-- Contributor documentation now mentions script to run linters. ([\#6164](https://github.com/matrix-org/synapse/issues/6164))
-- Modify CAPTCHA_SETUP.md to update the terms `private key` and `public key` to `secret key` and `site key` respectively. Contributed by Yash Jipkate. ([\#6257](https://github.com/matrix-org/synapse/issues/6257))
-- Update `INSTALL.md` Email section to talk about `account_threepid_delegates`. ([\#6272](https://github.com/matrix-org/synapse/issues/6272))
-- Fix a small typo in `account_threepid_delegates` configuration option. ([\#6273](https://github.com/matrix-org/synapse/issues/6273))
-
-
-Internal Changes
-----------------
-
-- Add a CI job to test the `synapse_port_db` script. ([\#6140](https://github.com/matrix-org/synapse/issues/6140), [\#6276](https://github.com/matrix-org/synapse/issues/6276))
-- Convert EventContext to an attrs. ([\#6218](https://github.com/matrix-org/synapse/issues/6218))
-- Move `persist_events` out from main data store. ([\#6240](https://github.com/matrix-org/synapse/issues/6240), [\#6300](https://github.com/matrix-org/synapse/issues/6300))
-- Reduce verbosity of user/room stats. ([\#6250](https://github.com/matrix-org/synapse/issues/6250))
-- Reduce impact of debug logging. ([\#6251](https://github.com/matrix-org/synapse/issues/6251))
-- Expose some homeserver functionality to spam checkers. ([\#6259](https://github.com/matrix-org/synapse/issues/6259))
-- Change cache descriptors to always return deferreds. ([\#6263](https://github.com/matrix-org/synapse/issues/6263), [\#6291](https://github.com/matrix-org/synapse/issues/6291))
-- Fix incorrect comment regarding the functionality of an `if` statement. ([\#6269](https://github.com/matrix-org/synapse/issues/6269))
-- Update CI to run `isort` over the `scripts` and `scripts-dev` directories. ([\#6270](https://github.com/matrix-org/synapse/issues/6270))
-- Replace every instance of `logger.warn` method with `logger.warning` as the former is deprecated. ([\#6271](https://github.com/matrix-org/synapse/issues/6271), [\#6314](https://github.com/matrix-org/synapse/issues/6314))
-- Port replication http server endpoints to async/await. ([\#6274](https://github.com/matrix-org/synapse/issues/6274))
-- Port room rest handlers to async/await. ([\#6275](https://github.com/matrix-org/synapse/issues/6275))
-- Remove redundant CLI parameters on CI's `flake8` step. ([\#6277](https://github.com/matrix-org/synapse/issues/6277))
-- Port `federation_server.py` to async/await. ([\#6279](https://github.com/matrix-org/synapse/issues/6279))
-- Port receipt and read markers to async/wait. ([\#6280](https://github.com/matrix-org/synapse/issues/6280))
-- Split out state storage into separate data store. ([\#6294](https://github.com/matrix-org/synapse/issues/6294), [\#6295](https://github.com/matrix-org/synapse/issues/6295))
-- Refactor EventContext for clarity. ([\#6298](https://github.com/matrix-org/synapse/issues/6298))
-- Update the version of black used to 19.10b0. ([\#6304](https://github.com/matrix-org/synapse/issues/6304))
-- Add some documentation about worker replication. ([\#6305](https://github.com/matrix-org/synapse/issues/6305))
-- Move admin endpoints into separate files. Contributed by Awesome Technologies Innovationslabor GmbH. ([\#6308](https://github.com/matrix-org/synapse/issues/6308))
-- Document the use of `lint.sh` for code style enforcement & extend it to run on specified paths only. ([\#6312](https://github.com/matrix-org/synapse/issues/6312))
-- Add optional python dependencies and dependant binary libraries to snapcraft packaging. ([\#6317](https://github.com/matrix-org/synapse/issues/6317))
-- Remove the dependency on psutil and replace functionality with the stdlib `resource` module. ([\#6318](https://github.com/matrix-org/synapse/issues/6318), [\#6336](https://github.com/matrix-org/synapse/issues/6336))
-- Improve documentation for EventContext fields. ([\#6319](https://github.com/matrix-org/synapse/issues/6319))
-- Add some checks that we aren't using state from rejected events. ([\#6330](https://github.com/matrix-org/synapse/issues/6330))
-- Add continuous integration for python 3.8. ([\#6341](https://github.com/matrix-org/synapse/issues/6341))
-- Correct spacing/case of various instances of the word "homeserver". ([\#6357](https://github.com/matrix-org/synapse/issues/6357))
-- Temporarily blacklist the failing unit test PurgeRoomTestCase.test_purge_room. ([\#6361](https://github.com/matrix-org/synapse/issues/6361))
-
-
-Synapse 1.5.1 (2019-11-06)
-==========================
-
-Features
---------
-
-- Limit the length of data returned by url previews, to prevent DoS attacks. ([\#6331](https://github.com/matrix-org/synapse/issues/6331), [\#6334](https://github.com/matrix-org/synapse/issues/6334))
-
-
-Synapse 1.5.0 (2019-10-29)
-==========================
-
-Security updates
-----------------
-
-This release includes a security fix ([\#6262](https://github.com/matrix-org/synapse/issues/6262), below). Administrators are encouraged to upgrade as soon as possible.
-
-Bugfixes
---------
-
-- Fix bug where room directory search was case sensitive. ([\#6268](https://github.com/matrix-org/synapse/issues/6268))
-
-
-Synapse 1.5.0rc2 (2019-10-28)
-=============================
-
-Bugfixes
---------
-
-- Update list of boolean columns in `synapse_port_db`. ([\#6247](https://github.com/matrix-org/synapse/issues/6247))
-- Fix /keys/query API on workers. ([\#6256](https://github.com/matrix-org/synapse/issues/6256))
-- Improve signature checking on some federation APIs. ([\#6262](https://github.com/matrix-org/synapse/issues/6262))
-
-
-Internal Changes
-----------------
-
-- Move schema delta files to the correct data store. ([\#6248](https://github.com/matrix-org/synapse/issues/6248))
-- Small performance improvement by removing repeated config lookups in room stats calculation. ([\#6255](https://github.com/matrix-org/synapse/issues/6255))
-
-
-Synapse 1.5.0rc1 (2019-10-24)
-==========================
-
-Features
---------
-
-- Improve quality of thumbnails for 1-bit/8-bit color palette images. ([\#2142](https://github.com/matrix-org/synapse/issues/2142))
-- Add ability to upload cross-signing signatures. ([\#5726](https://github.com/matrix-org/synapse/issues/5726))
-- Allow uploading of cross-signing keys. ([\#5769](https://github.com/matrix-org/synapse/issues/5769))
-- CAS login now provides a default display name for users if a `displayname_attribute` is set in the configuration file. ([\#6114](https://github.com/matrix-org/synapse/issues/6114))
-- Reject all pending invites for a user during deactivation. ([\#6125](https://github.com/matrix-org/synapse/issues/6125))
-- Add config option to suppress client side resource limit alerting. ([\#6173](https://github.com/matrix-org/synapse/issues/6173))
-
-
-Bugfixes
---------
-
-- Return an HTTP 404 instead of 400 when requesting a filter by ID that is unknown to the server. Thanks to @krombel for contributing this! ([\#2380](https://github.com/matrix-org/synapse/issues/2380))
-- Fix a bug where users could be invited twice to the same group. ([\#3436](https://github.com/matrix-org/synapse/issues/3436))
-- Fix `/createRoom` failing with badly-formatted MXIDs in the invitee list. Thanks to @wener291! ([\#4088](https://github.com/matrix-org/synapse/issues/4088))
-- Make the `synapse_port_db` script create the right indexes on a new PostgreSQL database. ([\#6102](https://github.com/matrix-org/synapse/issues/6102), [\#6178](https://github.com/matrix-org/synapse/issues/6178), [\#6243](https://github.com/matrix-org/synapse/issues/6243))
-- Fix bug when uploading a large file: Synapse responds with `M_UNKNOWN` while it should be `M_TOO_LARGE` according to spec. Contributed by Anshul Angaria. ([\#6109](https://github.com/matrix-org/synapse/issues/6109))
-- Fix user push rules being deleted from a room when it is upgraded. ([\#6144](https://github.com/matrix-org/synapse/issues/6144))
-- Don't 500 when trying to exchange a revoked 3PID invite. ([\#6147](https://github.com/matrix-org/synapse/issues/6147))
-- Fix transferring notifications and tags when joining an upgraded room that is new to your server. ([\#6155](https://github.com/matrix-org/synapse/issues/6155))
-- Fix bug where guest account registration can wedge after restart. ([\#6161](https://github.com/matrix-org/synapse/issues/6161))
-- Fix monthly active user reaping when reserved users are specified. ([\#6168](https://github.com/matrix-org/synapse/issues/6168))
-- Fix `/federation/v1/state` endpoint not supporting newer room versions. ([\#6170](https://github.com/matrix-org/synapse/issues/6170))
-- Fix bug where we were updating censored events as bytes rather than text, occaisonally causing invalid JSON being inserted breaking APIs that attempted to fetch such events. ([\#6186](https://github.com/matrix-org/synapse/issues/6186))
-- Fix occasional missed updates in the room and user directories. ([\#6187](https://github.com/matrix-org/synapse/issues/6187))
-- Fix tracing of non-JSON APIs, `/media`, `/key` etc. ([\#6195](https://github.com/matrix-org/synapse/issues/6195))
-- Fix bug where presence would not get timed out correctly if a synchrotron worker is used and restarted. ([\#6212](https://github.com/matrix-org/synapse/issues/6212))
-- synapse_port_db: Add 2 additional BOOLEAN_COLUMNS to be able to convert from database schema v56. ([\#6216](https://github.com/matrix-org/synapse/issues/6216))
-- Fix a bug where the Synapse demo script blacklisted `::1` (ipv6 localhost) from receiving federation traffic. ([\#6229](https://github.com/matrix-org/synapse/issues/6229))
-
-
-Updates to the Docker image
----------------------------
-
-- Fix logging getting lost for the docker image. ([\#6197](https://github.com/matrix-org/synapse/issues/6197))
-
-
-Internal Changes
-----------------
-
-- Update `user_filters` table to have a unique index, and non-null columns. Thanks to @pik for contributing this. ([\#1172](https://github.com/matrix-org/synapse/issues/1172), [\#6175](https://github.com/matrix-org/synapse/issues/6175), [\#6184](https://github.com/matrix-org/synapse/issues/6184))
-- Allow devices to be marked as hidden, for use by features such as cross-signing.
-  This adds a new field with a default value to the devices field in the database,
-  and so the database upgrade may take a long time depending on how many devices
-  are in the database. ([\#5759](https://github.com/matrix-org/synapse/issues/5759))
-- Move lookup-related functions from RoomMemberHandler to IdentityHandler. ([\#5978](https://github.com/matrix-org/synapse/issues/5978))
-- Improve performance of the public room list directory. ([\#6019](https://github.com/matrix-org/synapse/issues/6019), [\#6152](https://github.com/matrix-org/synapse/issues/6152), [\#6153](https://github.com/matrix-org/synapse/issues/6153), [\#6154](https://github.com/matrix-org/synapse/issues/6154))
-- Edit header dicts docstrings in `SimpleHttpClient` to note that `str` or `bytes` can be passed as header keys. ([\#6077](https://github.com/matrix-org/synapse/issues/6077))
-- Add snapcraft packaging information. Contributed by @devec0. ([\#6084](https://github.com/matrix-org/synapse/issues/6084), [\#6191](https://github.com/matrix-org/synapse/issues/6191))
-- Kill off half-implemented password-reset via sms. ([\#6101](https://github.com/matrix-org/synapse/issues/6101))
-- Remove `get_user_by_req` opentracing span and add some tags. ([\#6108](https://github.com/matrix-org/synapse/issues/6108))
-- Drop some unused database tables. ([\#6115](https://github.com/matrix-org/synapse/issues/6115))
-- Add env var to turn on tracking of log context changes. ([\#6127](https://github.com/matrix-org/synapse/issues/6127))
-- Refactor configuration loading to allow better typechecking. ([\#6137](https://github.com/matrix-org/synapse/issues/6137))
-- Log responder when responding to media request. ([\#6139](https://github.com/matrix-org/synapse/issues/6139))
-- Improve performance of `find_next_generated_user_id` DB query. ([\#6148](https://github.com/matrix-org/synapse/issues/6148))
-- Expand type-checking on modules imported by `synapse.config`. ([\#6150](https://github.com/matrix-org/synapse/issues/6150))
-- Use Postgres ANY for selecting many values. ([\#6156](https://github.com/matrix-org/synapse/issues/6156))
-- Add more caching to `_get_joined_users_from_context` DB query. ([\#6159](https://github.com/matrix-org/synapse/issues/6159))
-- Add some metrics on the federation sender. ([\#6160](https://github.com/matrix-org/synapse/issues/6160))
-- Add some logging to the rooms stats updates, to try to track down a flaky test. ([\#6167](https://github.com/matrix-org/synapse/issues/6167))
-- Remove unused `timeout` parameter from `_get_public_room_list`. ([\#6179](https://github.com/matrix-org/synapse/issues/6179))
-- Reject (accidental) attempts to insert bytes into postgres tables. ([\#6186](https://github.com/matrix-org/synapse/issues/6186))
-- Make `version` optional in body of `PUT /room_keys/version/{version}`, since it's redundant. ([\#6189](https://github.com/matrix-org/synapse/issues/6189))
-- Make storage layer responsible for adding device names to key, rather than the handler. ([\#6193](https://github.com/matrix-org/synapse/issues/6193))
-- Port `synapse.rest.admin` module to use async/await. ([\#6196](https://github.com/matrix-org/synapse/issues/6196))
-- Enforce that all boolean configuration values are lowercase in CI. ([\#6203](https://github.com/matrix-org/synapse/issues/6203))
-- Remove some unused event-auth code. ([\#6214](https://github.com/matrix-org/synapse/issues/6214))
-- Remove `Auth.check` method. ([\#6217](https://github.com/matrix-org/synapse/issues/6217))
-- Remove `format_tap.py` script in favour of a perl reimplementation in Sytest's repo. ([\#6219](https://github.com/matrix-org/synapse/issues/6219))
-- Refactor storage layer in preparation to support having multiple databases. ([\#6231](https://github.com/matrix-org/synapse/issues/6231))
-- Remove some extra quotation marks across the codebase. ([\#6236](https://github.com/matrix-org/synapse/issues/6236))
-
-
 Synapse 1.4.1 (2019-10-18)
 ==========================
 

CONTRIBUTING.md

@@ -1,224 +0,0 @@
-# Contributing code to Matrix
-
-Everyone is welcome to contribute code to Matrix
-(https://github.com/matrix-org), provided that they are willing to license
-their contributions under the same license as the project itself. We follow a
-simple 'inbound=outbound' model for contributions: the act of submitting an
-'inbound' contribution means that the contributor agrees to license the code
-under the same terms as the project's overall 'outbound' license - in our
-case, this is almost always Apache Software License v2 (see [LICENSE](LICENSE)).
-
-## How to contribute
-
-The preferred and easiest way to contribute changes to Matrix is to fork the
-relevant project on github, and then [create a pull request](
-https://help.github.com/articles/using-pull-requests/) to ask us to pull
-your changes into our repo.
-
-**The single biggest thing you need to know is: please base your changes on
-the develop branch - *not* master.**
-
-We use the master branch to track the most recent release, so that folks who
-blindly clone the repo and automatically check out master get something that
-works. Develop is the unstable branch where all the development actually
-happens: the workflow is that contributors should fork the develop branch to
-make a 'feature' branch for a particular contribution, and then make a pull
-request to merge this back into the matrix.org 'official' develop branch. We
-use github's pull request workflow to review the contribution, and either ask
-you to make any refinements needed or merge it and make them ourselves. The
-changes will then land on master when we next do a release.
-
-We use [Buildkite](https://buildkite.com/matrix-dot-org/synapse) for continuous
-integration. If your change breaks the build, this will be shown in GitHub, so
-please keep an eye on the pull request for feedback.
-
-To run unit tests in a local development environment, you can use:
-
-- ``tox -e py35`` (requires tox to be installed by ``pip install tox``)
-  for SQLite-backed Synapse on Python 3.5.
-- ``tox -e py36`` for SQLite-backed Synapse on Python 3.6.
-- ``tox -e py36-postgres`` for PostgreSQL-backed Synapse on Python 3.6
-  (requires a running local PostgreSQL with access to create databases).
-- ``./test_postgresql.sh`` for PostgreSQL-backed Synapse on Python 3.5
-  (requires Docker). Entirely self-contained, recommended if you don't want to
-  set up PostgreSQL yourself.
-
-Docker images are available for running the integration tests (SyTest) locally,
-see the [documentation in the SyTest repo](
-https://github.com/matrix-org/sytest/blob/develop/docker/README.md) for more
-information.
-
-## Code style
-
-All Matrix projects have a well-defined code-style - and sometimes we've even
-got as far as documenting it... For instance, synapse's code style doc lives
-[here](docs/code_style.md).
-
-To facilitate meeting these criteria you can run `scripts-dev/lint.sh`
-locally. Since this runs the tools listed in the above document, you'll need
-python 3.6 and to install each tool:
-
-```
-# Install the dependencies
-pip install -U black flake8 flake8-comprehensions isort
-
-# Run the linter script
-./scripts-dev/lint.sh
-```
-
-**Note that the script does not just test/check, but also reformats code, so you
-may wish to ensure any new code is committed first**. By default this script
-checks all files and can take some time; if you alter only certain files, you
-might wish to specify paths as arguments to reduce the run-time:
-
-```
-./scripts-dev/lint.sh path/to/file1.py path/to/file2.py path/to/folder
-```
-
-Before pushing new changes, ensure they don't produce linting errors. Commit any
-files that were corrected.
-
-Please ensure your changes match the cosmetic style of the existing project,
-and **never** mix cosmetic and functional changes in the same commit, as it
-makes it horribly hard to review otherwise.
-
-
-## Changelog
-
-All changes, even minor ones, need a corresponding changelog / newsfragment
-entry. These are managed by [Towncrier](https://github.com/hawkowl/towncrier).
-
-To create a changelog entry, make a new file in the `changelog.d` directory named
-in the format of `PRnumber.type`. The type can be one of the following:
-
-* `feature`
-* `bugfix`
-* `docker` (for updates to the Docker image)
-* `doc` (for updates to the documentation)
-* `removal` (also used for deprecations)
-* `misc` (for internal-only changes)
-
-The content of the file is your changelog entry, which should be a short
-description of your change in the same style as the rest of our [changelog](
-https://github.com/matrix-org/synapse/blob/master/CHANGES.md). The file can
-contain Markdown formatting, and should end with a full stop (.) or an
-exclamation mark (!) for consistency.
-
-Adding credits to the changelog is encouraged, we value your
-contributions and would like to have you shouted out in the release notes!
-
-For example, a fix in PR #1234 would have its changelog entry in
-`changelog.d/1234.bugfix`, and contain content like "The security levels of
-Florbs are now validated when received over federation. Contributed by Jane
-Matrix.".
-
-## Debian changelog
-
-Changes which affect the debian packaging files (in `debian`) are an
-exception.
-
-In this case, you will need to add an entry to the debian changelog for the
-next release. For this, run the following command:
-
-```
-dch
-```
-
-This will make up a new version number (if there isn't already an unreleased
-version in flight), and open an editor where you can add a new changelog entry.
-(Our release process will ensure that the version number and maintainer name is
-corrected for the release.)
-
-If your change affects both the debian packaging *and* files outside the debian
-directory, you will need both a regular newsfragment *and* an entry in the
-debian changelog. (Though typically such changes should be submitted as two
-separate pull requests.)
-
-## Sign off
-
-In order to have a concrete record that your contribution is intentional
-and you agree to license it under the same terms as the project's license, we've adopted the
-same lightweight approach that the Linux Kernel
-[submitting patches process](
-https://www.kernel.org/doc/html/latest/process/submitting-patches.html#sign-your-work-the-developer-s-certificate-of-origin>),
-[Docker](https://github.com/docker/docker/blob/master/CONTRIBUTING.md), and many other
-projects use: the DCO (Developer Certificate of Origin:
-http://developercertificate.org/). This is a simple declaration that you wrote
-the contribution or otherwise have the right to contribute it to Matrix:
-
-```
-Developer Certificate of Origin
-Version 1.1
-
-Copyright (C) 2004, 2006 The Linux Foundation and its contributors.
-660 York Street, Suite 102,
-San Francisco, CA 94110 USA
-
-Everyone is permitted to copy and distribute verbatim copies of this
-license document, but changing it is not allowed.
-
-Developer's Certificate of Origin 1.1
-
-By making a contribution to this project, I certify that:
-
-(a) The contribution was created in whole or in part by me and I
-    have the right to submit it under the open source license
-    indicated in the file; or
-
-(b) The contribution is based upon previous work that, to the best
-    of my knowledge, is covered under an appropriate open source
-    license and I have the right under that license to submit that
-    work with modifications, whether created in whole or in part
-    by me, under the same open source license (unless I am
-    permitted to submit under a different license), as indicated
-    in the file; or
-
-(c) The contribution was provided directly to me by some other
-    person who certified (a), (b) or (c) and I have not modified
-    it.
-
-(d) I understand and agree that this project and the contribution
-    are public and that a record of the contribution (including all
-    personal information I submit with it, including my sign-off) is
-    maintained indefinitely and may be redistributed consistent with
-    this project or the open source license(s) involved.
-```
-
-If you agree to this for your contribution, then all that's needed is to
-include the line in your commit or pull request comment:
-
-```
-Signed-off-by: Your Name <your@email.example.org>
-```
-
-We accept contributions under a legally identifiable name, such as
-your name on government documentation or common-law names (names
-claimed by legitimate usage or repute). Unfortunately, we cannot
-accept anonymous contributions at this time.
-
-Git allows you to add this signoff automatically when using the `-s`
-flag to `git commit`, which uses the name and email set in your
-`user.name` and `user.email` git configs.
-
-## Merge Strategy
-
-We use the commit history of develop/master extensively to identify
-when regressions were introduced and what changes have been made.
-
-We aim to have a clean merge history, which means we normally squash-merge
-changes into develop. For small changes this means there is no need to rebase
-to clean up your PR before merging. Larger changes with an organised set of
-commits may be merged as-is, if the history is judged to be useful.
-
-This use of squash-merging will mean PRs built on each other will be hard to 
-merge. We suggest avoiding these where possible, and if required, ensuring
-each PR has a tidy set of commits to ease merging.
-
-## Conclusion
-
-That's it! Matrix is a very open and collaborative project as you might expect
-given our obsession with open communication. If we're going to successfully
-matrix together all the fragmented communication technologies out there we are
-reliant on contributions and collaboration from the community to do so. So
-please get involved - and we hope you have as much fun hacking on Matrix as we
-do!

CONTRIBUTING.rst

@@ -0,0 +1,198 @@
+Contributing code to Matrix
+===========================
+
+Everyone is welcome to contribute code to Matrix
+(https://github.com/matrix-org), provided that they are willing to license
+their contributions under the same license as the project itself. We follow a
+simple 'inbound=outbound' model for contributions: the act of submitting an
+'inbound' contribution means that the contributor agrees to license the code
+under the same terms as the project's overall 'outbound' license - in our
+case, this is almost always Apache Software License v2 (see LICENSE).
+
+How to contribute
+~~~~~~~~~~~~~~~~~
+
+The preferred and easiest way to contribute changes to Matrix is to fork the
+relevant project on github, and then create a pull request to ask us to pull
+your changes into our repo
+(https://help.github.com/articles/using-pull-requests/)
+
+**The single biggest thing you need to know is: please base your changes on
+the develop branch - /not/ master.**
+
+We use the master branch to track the most recent release, so that folks who
+blindly clone the repo and automatically check out master get something that
+works. Develop is the unstable branch where all the development actually
+happens: the workflow is that contributors should fork the develop branch to
+make a 'feature' branch for a particular contribution, and then make a pull
+request to merge this back into the matrix.org 'official' develop branch. We
+use github's pull request workflow to review the contribution, and either ask
+you to make any refinements needed or merge it and make them ourselves. The
+changes will then land on master when we next do a release.
+
+We use `Buildkite <https://buildkite.com/matrix-dot-org/synapse>`_ for
+continuous integration.  Buildkite builds need to be authorised by a
+maintainer. If your change breaks the build, this will be shown in GitHub, so
+please keep an eye on the pull request for feedback.
+
+To run unit tests in a local development environment, you can use:
+
+- ``tox -e py35`` (requires tox to be installed by ``pip install tox``)
+  for SQLite-backed Synapse on Python 3.5.
+- ``tox -e py36`` for SQLite-backed Synapse on Python 3.6.
+- ``tox -e py36-postgres`` for PostgreSQL-backed Synapse on Python 3.6
+  (requires a running local PostgreSQL with access to create databases).
+- ``./test_postgresql.sh`` for PostgreSQL-backed Synapse on Python 3.5
+  (requires Docker). Entirely self-contained, recommended if you don't want to
+  set up PostgreSQL yourself.
+
+Docker images are available for running the integration tests (SyTest) locally,
+see the `documentation in the SyTest repo
+<https://github.com/matrix-org/sytest/blob/develop/docker/README.md>`_ for more
+information.
+
+Code style
+~~~~~~~~~~
+
+All Matrix projects have a well-defined code-style - and sometimes we've even
+got as far as documenting it... For instance, synapse's code style doc lives
+at https://github.com/matrix-org/synapse/tree/master/docs/code_style.md.
+
+Please ensure your changes match the cosmetic style of the existing project,
+and **never** mix cosmetic and functional changes in the same commit, as it
+makes it horribly hard to review otherwise.
+
+Changelog
+~~~~~~~~~
+
+All changes, even minor ones, need a corresponding changelog / newsfragment
+entry. These are managed by Towncrier
+(https://github.com/hawkowl/towncrier).
+
+To create a changelog entry, make a new file in the ``changelog.d`` file named
+in the format of ``PRnumber.type``. The type can be one of the following:
+
+* ``feature``.
+* ``bugfix``.
+* ``docker`` (for updates to the Docker image).
+* ``doc`` (for updates to the documentation).
+* ``removal`` (also used for deprecations).
+* ``misc`` (for internal-only changes).
+
+The content of the file is your changelog entry, which should be a short
+description of your change in the same style as the rest of our `changelog
+<https://github.com/matrix-org/synapse/blob/master/CHANGES.md>`_. The file can
+contain Markdown formatting, and should end with a full stop ('.') for
+consistency.
+
+Adding credits to the changelog is encouraged, we value your
+contributions and would like to have you shouted out in the release notes!
+
+For example, a fix in PR #1234 would have its changelog entry in
+``changelog.d/1234.bugfix``, and contain content like "The security levels of
+Florbs are now validated when recieved over federation. Contributed by Jane
+Matrix.".
+
+Debian changelog
+----------------
+
+Changes which affect the debian packaging files (in ``debian``) are an
+exception.
+
+In this case, you will need to add an entry to the debian changelog for the
+next release. For this, run the following command::
+
+  dch
+
+This will make up a new version number (if there isn't already an unreleased
+version in flight), and open an editor where you can add a new changelog entry.
+(Our release process will ensure that the version number and maintainer name is
+corrected for the release.)
+
+If your change affects both the debian packaging *and* files outside the debian
+directory, you will need both a regular newsfragment *and* an entry in the
+debian changelog. (Though typically such changes should be submitted as two
+separate pull requests.)
+
+Attribution
+~~~~~~~~~~~
+
+Everyone who contributes anything to Matrix is welcome to be listed in the
+AUTHORS.rst file for the project in question. Please feel free to include a
+change to AUTHORS.rst in your pull request to list yourself and a short
+description of the area(s) you've worked on. Also, we sometimes have swag to
+give away to contributors - if you feel that Matrix-branded apparel is missing
+from your life, please mail us your shipping address to matrix at matrix.org and
+we'll try to fix it :)
+
+Sign off
+~~~~~~~~
+
+In order to have a concrete record that your contribution is intentional
+and you agree to license it under the same terms as the project's license, we've adopted the
+same lightweight approach that the Linux Kernel
+`submitting patches process <https://www.kernel.org/doc/html/latest/process/submitting-patches.html#sign-your-work-the-developer-s-certificate-of-origin>`_, Docker
+(https://github.com/docker/docker/blob/master/CONTRIBUTING.md), and many other
+projects use: the DCO (Developer Certificate of Origin:
+http://developercertificate.org/). This is a simple declaration that you wrote
+the contribution or otherwise have the right to contribute it to Matrix::
+
+    Developer Certificate of Origin
+    Version 1.1
+
+    Copyright (C) 2004, 2006 The Linux Foundation and its contributors.
+    660 York Street, Suite 102,
+    San Francisco, CA 94110 USA
+
+    Everyone is permitted to copy and distribute verbatim copies of this
+    license document, but changing it is not allowed.
+
+    Developer's Certificate of Origin 1.1
+
+    By making a contribution to this project, I certify that:
+
+    (a) The contribution was created in whole or in part by me and I
+        have the right to submit it under the open source license
+        indicated in the file; or
+
+    (b) The contribution is based upon previous work that, to the best
+        of my knowledge, is covered under an appropriate open source
+        license and I have the right under that license to submit that
+        work with modifications, whether created in whole or in part
+        by me, under the same open source license (unless I am
+        permitted to submit under a different license), as indicated
+        in the file; or
+
+    (c) The contribution was provided directly to me by some other
+        person who certified (a), (b) or (c) and I have not modified
+        it.
+
+    (d) I understand and agree that this project and the contribution
+        are public and that a record of the contribution (including all
+        personal information I submit with it, including my sign-off) is
+        maintained indefinitely and may be redistributed consistent with
+        this project or the open source license(s) involved.
+
+If you agree to this for your contribution, then all that's needed is to
+include the line in your commit or pull request comment::
+
+    Signed-off-by: Your Name <your@email.example.org>
+
+We accept contributions under a legally identifiable name, such as
+your name on government documentation or common-law names (names
+claimed by legitimate usage or repute). Unfortunately, we cannot
+accept anonymous contributions at this time.
+
+Git allows you to add this signoff automatically when using the ``-s``
+flag to ``git commit``, which uses the name and email set in your
+``user.name`` and ``user.email`` git configs.
+
+Conclusion
+~~~~~~~~~~
+
+That's it!  Matrix is a very open and collaborative project as you might expect
+given our obsession with open communication.  If we're going to successfully
+matrix together all the fragmented communication technologies out there we are
+reliant on contributions and collaboration from the community to do so.  So
+please get involved - and we hope you have as much fun hacking on Matrix as we
+do!

INSTALL.md

@@ -36,7 +36,7 @@ that your email address is probably `user@example.com` rather than
 System requirements:
 
 - POSIX-compliant system (tested on Linux & OS X)
-- Python 3.5, 3.6, 3.7 or 3.8.
+- Python 3.5, 3.6, or 3.7
 - At least 1GB of free RAM if you want to join large public rooms like #matrix:matrix.org
 
 Synapse is written in Python but some of the libraries it uses are written in
@@ -109,8 +109,8 @@ Installing prerequisites on Ubuntu or Debian:
 
 ```
 sudo apt-get install build-essential python3-dev libffi-dev \
-                     python3-pip python3-setuptools sqlite3 \
-                     libssl-dev python3-virtualenv libjpeg-dev libxslt1-dev
+                     python-pip python-setuptools sqlite3 \
+                     libssl-dev python-virtualenv libjpeg-dev libxslt1-dev
 ```
 
 #### ArchLinux
@@ -124,32 +124,18 @@ sudo pacman -S base-devel python python-pip \
 
 #### CentOS/Fedora
 
-Installing prerequisites on CentOS 8 or Fedora>26:
-
-```
-sudo dnf install libtiff-devel libjpeg-devel libzip-devel freetype-devel \
-                 libwebp-devel tk-devel redhat-rpm-config \
-                 python3-virtualenv libffi-devel openssl-devel
-sudo dnf groupinstall "Development Tools"
-```
-
-Installing prerequisites on CentOS 7 or Fedora<=25:
+Installing prerequisites on CentOS 7 or Fedora 25:
 
 ```
 sudo yum install libtiff-devel libjpeg-devel libzip-devel freetype-devel \
                  lcms2-devel libwebp-devel tcl-devel tk-devel redhat-rpm-config \
-                 python3-virtualenv libffi-devel openssl-devel
+                 python-virtualenv libffi-devel openssl-devel
 sudo yum groupinstall "Development Tools"
 ```
 
-Note that Synapse does not support versions of SQLite before 3.11, and CentOS 7
-uses SQLite 3.7. You may be able to work around this by installing a more
-recent SQLite version, but it is recommended that you instead use a Postgres
-database: see [docs/postgres.md](docs/postgres.md).
+#### Mac OS X
 
-#### macOS
-
-Installing prerequisites on macOS:
+Installing prerequisites on Mac OS X:
 
 ```
 xcode-select --install
@@ -158,14 +144,6 @@ sudo pip install virtualenv
 brew install pkg-config libffi
 ```
 
-On macOS Catalina (10.15) you may need to explicitly install OpenSSL
-via brew and inform `pip` about it so that `psycopg2` builds:
-
-```
-brew install openssl@1.1
-export LDFLAGS=-L/usr/local/Cellar/openssl\@1.1/1.1.1d/lib/
-```
-
 #### OpenSUSE
 
 Installing prerequisites on openSUSE:
@@ -397,17 +375,15 @@ Once you have installed synapse as above, you will need to configure it.
 
 ## TLS certificates
 
-The default configuration exposes a single HTTP port on the local
-interface: `http://localhost:8008`. It is suitable for local testing,
-but for any practical use, you will need Synapse's APIs to be served
-over HTTPS.
+The default configuration exposes a single HTTP port: http://localhost:8008. It
+is suitable for local testing, but for any practical use, you will either need
+to enable a reverse proxy, or configure Synapse to expose an HTTPS port.
 
-The recommended way to do so is to set up a reverse proxy on port
-`8448`. You can find documentation on doing so in
+For information on using a reverse proxy, see
 [docs/reverse_proxy.md](docs/reverse_proxy.md).
 
-Alternatively, you can configure Synapse to expose an HTTPS port. To do
-so, you will need to edit `homeserver.yaml`, as follows:
+To configure Synapse to expose an HTTPS port, you will need to edit
+`homeserver.yaml`, as follows:
 
 * First, under the `listeners` section, uncomment the configuration for the
   TLS-enabled listener. (Remove the hash sign (`#`) at the start of
@@ -425,13 +401,10 @@ so, you will need to edit `homeserver.yaml`, as follows:
   point these settings at an existing certificate and key, or you can
   enable Synapse's built-in ACME (Let's Encrypt) support. Instructions
   for having Synapse automatically provision and renew federation
-  certificates through ACME can be found at [ACME.md](docs/ACME.md).
-  Note that, as pointed out in that document, this feature will not
-  work with installs set up after November 2019. 
-  
-  If you are using your own certificate, be sure to use a `.pem` file that
-  includes the full certificate chain including any intermediate certificates
-  (for instance, if using certbot, use `fullchain.pem` as your certificate, not
+  certificates through ACME can be found at [ACME.md](docs/ACME.md). If you
+  are using your own certificate, be sure to use a `.pem` file that includes
+  the full certificate chain including any intermediate certificates (for
+  instance, if using certbot, use `fullchain.pem` as your certificate, not
   `cert.pem`).
 
 For a more detailed guide to configuring your server for federation, see
@@ -440,18 +413,16 @@ For a more detailed guide to configuring your server for federation, see
 
 ## Email
 
-It is desirable for Synapse to have the capability to send email. This allows
-Synapse to send password reset emails, send verifications when an email address
-is added to a user's account, and send email notifications to users when they
-receive new messages.
+It is desirable for Synapse to have the capability to send email. For example,
+this is required to support the 'password reset' feature.
 
 To configure an SMTP server for Synapse, modify the configuration section
-headed `email`, and be sure to have at least the `smtp_host`, `smtp_port`
-and `notif_from` fields filled out.  You may also need to set `smtp_user`,
-`smtp_pass`, and `require_transport_security`.
+headed ``email``, and be sure to have at least the ``smtp_host``, ``smtp_port``
+and ``notif_from`` fields filled out. You may also need to set ``smtp_user``,
+``smtp_pass``, and ``require_transport_security``.
 
-If email is not configured, password reset, registration and notifications via
-email will be disabled.
+If Synapse is not configured with an SMTP server, password reset via email will
+ be disabled by default.
 
 ## Registering a user
 

MANIFEST.in

@@ -8,12 +8,11 @@ include demo/demo.tls.dh
 include demo/*.py
 include demo/*.sh
 
-recursive-include synapse/storage *.sql
-recursive-include synapse/storage *.sql.postgres
-recursive-include synapse/storage *.sql.sqlite
-recursive-include synapse/storage *.py
-recursive-include synapse/storage *.txt
-recursive-include synapse/storage *.md
+recursive-include synapse/storage/schema *.sql
+recursive-include synapse/storage/schema *.sql.postgres
+recursive-include synapse/storage/schema *.sql.sqlite
+recursive-include synapse/storage/schema *.py
+recursive-include synapse/storage/schema *.txt
 
 recursive-include docs *
 recursive-include scripts *

README.rst

@@ -272,7 +272,7 @@ to install using pip and a virtualenv::
 
     virtualenv -p python3 env
     source env/bin/activate
-    python -m pip install --no-use-pep517 -e ".[all]"
+    python -m pip install --no-use-pep517 -e .[all]
 
 This will run a process of downloading and installing all the needed
 dependencies into a virtual env.
@@ -393,4 +393,4 @@ something like the following in their logs::
     2019-09-11 19:32:04,271 - synapse.federation.transport.server - 288 - WARNING - GET-11752 - authenticate_request failed: 401: Invalid signature for server <server> with key ed25519:a_EqML: Unable to verify signature for <server>
 
 This is normally caused by a misconfiguration in your reverse-proxy. See
-`<docs/reverse_proxy.md>`_ and double-check that your settings are correct.
+`<docs/reverse_proxy.rst>`_ and double-check that your settings are correct.

UPGRADE.rst

@@ -2,7 +2,7 @@ Upgrading Synapse
 =================
 
 Before upgrading check if any special steps are required to upgrade from the
-version you currently have installed to the current version of Synapse. The extra
+what you currently have installed to current version of Synapse. The extra
 instructions that may be required are listed later in this document.
 
 * If Synapse was installed using `prebuilt packages
@@ -29,7 +29,7 @@ instructions that may be required are listed later in this document.
      running:
 
      .. code:: bash
-
+     
        git pull
        pip install --upgrade .
 
@@ -75,51 +75,6 @@ for example:
      wget https://packages.matrix.org/debian/pool/main/m/matrix-synapse-py3/matrix-synapse-py3_1.3.0+stretch1_amd64.deb
      dpkg -i matrix-synapse-py3_1.3.0+stretch1_amd64.deb
 
-
-Upgrading to v1.10.0
-====================
-
-Synapse will now log a warning on start up if used with a PostgreSQL database
-that has a non-recommended locale set.
-
-See `docs/postgres.md <docs/postgres.md>`_ for details.
-
-
-Upgrading to v1.8.0
-===================
-
-Specifying a ``log_file`` config option will now cause Synapse to refuse to
-start, and should be replaced by with the ``log_config`` option. Support for
-the ``log_file`` option was removed in v1.3.0 and has since had no effect.
-
-
-Upgrading to v1.7.0
-===================
-
-In an attempt to configure Synapse in a privacy preserving way, the default
-behaviours of ``allow_public_rooms_without_auth`` and
-``allow_public_rooms_over_federation`` have been inverted. This means that by
-default, only authenticated users querying the Client/Server API will be able
-to query the room directory, and relatedly that the server will not share
-room directory information with other servers over federation.
-
-If your installation does not explicitly set these settings one way or the other
-and you want either setting to be ``true`` then it will necessary to update
-your homeserver configuration file accordingly.
-
-For more details on the surrounding context see our `explainer
-<https://matrix.org/blog/2019/11/09/avoiding-unwelcome-visitors-on-private-matrix-servers>`_.
-
-
-Upgrading to v1.5.0
-===================
-
-This release includes a database migration which may take several minutes to
-complete if there are a large number (more than a million or so) of entries in
-the ``devices`` table. This is only likely to a be a problem on very large
-installations.
-
-
 Upgrading to v1.4.0
 ===================
 

changelog.d/1172.misc

@@ -0,0 +1 @@
+Update `user_filters` table to have a unique index, and non-null columns. Thanks to @pik for contributing this.

changelog.d/2142.feature

@@ -0,0 +1 @@
+Improve quality of thumbnails for 1-bit/8-bit color palette images.

changelog.d/2380.bugfix

@@ -0,0 +1 @@
+Return an HTTP 404 instead of 400 when requesting a filter by ID that is unknown to the server. Thanks to @krombel for contributing this!

changelog.d/3436.bugfix

@@ -0,0 +1 @@
+Fix a problem where users could be invited twice to the same group.

changelog.d/4088.bugfix

@@ -0,0 +1 @@
+Added domain validation when including a list of invitees upon room creation.

changelog.d/5759.misc

@@ -0,0 +1,4 @@
+Allow devices to be marked as hidden, for use by features such as cross-signing.
+This adds a new field with a default value to the devices field in the database,
+and so the database upgrade may take a long time depending on how many devices
+are in the database.

changelog.d/5769.feature

@@ -0,0 +1 @@
+Allow uploading of cross-signing keys.

changelog.d/5978.misc

@@ -0,0 +1 @@
+Move lookup-related functions from RoomMemberHandler to IdentityHandler.

changelog.d/6019.misc

@@ -0,0 +1 @@
+Improve performance of the public room list directory.

changelog.d/6077.misc

@@ -0,0 +1 @@
+Edit header dicts docstrings in SimpleHttpClient to note that `str` or `bytes` can be passed as header keys.

changelog.d/6084.misc

@@ -0,0 +1 @@
+Add snapcraft packaging information. Contributed by @devec0.

changelog.d/6101.misc

@@ -0,0 +1 @@
+Kill off half-implemented password-reset via sms.

changelog.d/6108.misc

@@ -0,0 +1 @@
+Remove `get_user_by_req` opentracing span and add some tags.

changelog.d/6109.bugfix

@@ -0,0 +1 @@
+Fix bug when uploading a large file: Synapse responds with `M_UNKNOWN` while it should be `M_TOO_LARGE` according to spec. Contributed by Anshul Angaria.

changelog.d/6114.feature

@@ -0,0 +1 @@
+CAS login now provides a default display name for users if a `displayname_attribute` is set in the configuration file.

changelog.d/6115.misc

@@ -0,0 +1 @@
+Drop some unused database tables.

changelog.d/6125.feature

@@ -0,0 +1 @@
+Reject all pending invites for a user during deactivation.

changelog.d/6127.misc

@@ -0,0 +1 @@
+Add env var to turn on tracking of log context changes.

changelog.d/6137.misc

@@ -0,0 +1 @@
+Refactor configuration loading to allow better typechecking.

changelog.d/6139.misc

@@ -0,0 +1 @@
+Log responder when responding to media request.

changelog.d/6144.bugfix

@@ -0,0 +1 @@
+Prevent user push rules being deleted from a room when it is upgraded.

changelog.d/6147.bugfix

@@ -0,0 +1 @@
+Don't 500 when trying to exchange a revoked 3PID invite.

changelog.d/6148.misc

@@ -0,0 +1 @@
+Improve performance of `find_next_generated_user_id` DB query.

changelog.d/6150.misc

@@ -0,0 +1 @@
+Expand type-checking on modules imported by synapse.config.

changelog.d/6152.misc

@@ -0,0 +1 @@
+Improve performance of the public room list directory.

changelog.d/6153.misc

@@ -0,0 +1 @@
+Improve performance of the public room list directory.

changelog.d/6154.misc

@@ -0,0 +1 @@
+Improve performance of the public room list directory.

changelog.d/6155.bugfix

@@ -0,0 +1 @@
+Fix transferring notifications and tags when joining an upgraded room that is new to your server.

changelog.d/6156.misc

@@ -0,0 +1 @@
+Use Postgres ANY for selecting many values.

changelog.d/6159.misc

@@ -0,0 +1 @@
+Add more caching to `_get_joined_users_from_context` DB query.

changelog.d/6160.misc

@@ -0,0 +1 @@
+Add some metrics on the federation sender.

changelog.d/6161.bugfix

@@ -0,0 +1 @@
+Fix bug where guest account registration can wedge after restart.

changelog.d/6167.misc

@@ -0,0 +1 @@
+Add some logging to the rooms stats updates, to try to track down a flaky test.

changelog.d/6168.bugfix

@@ -0,0 +1 @@
+Fix monthly active user reaping where reserved users are specified.

changelog.d/6170.bugfix

@@ -0,0 +1 @@
+Fix /federation/v1/state endpoint for recent room versions.

changelog.d/6175.misc

@@ -0,0 +1 @@
+Update `user_filters` table to have a unique index, and non-null columns. Thanks to @pik for contributing this.

changelog.d/6178.bugfix

@@ -0,0 +1 @@
+Make the `synapse_port_db` script create the right indexes on a new PostgreSQL database.

changelog.d/6179.misc

@@ -0,0 +1 @@
+Remove unused `timeout` parameter from `_get_public_room_list`.

changelog.d/6184.misc

@@ -0,0 +1 @@
+Update `user_filters` table to have a unique index, and non-null columns. Thanks to @pik for contributing this.

changelog.d/6186.bugfix

@@ -0,0 +1 @@
+Fix bug where we were updating censored events as bytes rather than text, occaisonally causing invalid JSON being inserted breaking APIs that attempted to fetch such events.

changelog.d/6186.misc

@@ -0,0 +1 @@
+Reject (accidental) attempts to insert bytes into postgres tables.

changelog.d/6187.bugfix

@@ -0,0 +1 @@
+Fix occasional missed updates in the room and user directories.

changelog.d/6189.misc

@@ -0,0 +1 @@
+Make `version` optional in body of `PUT /room_keys/version/{version}`, since it's redundant.

changelog.d/6191.misc

@@ -0,0 +1 @@
+Add snapcraft packaging information. Contributed by @devec0.

changelog.d/6193.misc

@@ -0,0 +1 @@
+Make storage layer responsible for adding device names to key, rather than the handler.

changelog.d/6195.bugfix

@@ -0,0 +1 @@
+Fix tracing of non-JSON APIs, /media, /key etc.

changelog.d/6196.misc

@@ -0,0 +1 @@
+Port synapse.rest.admin module to use async/await.

changelog.d/6197.docker

@@ -0,0 +1 @@
+Fix logging getting lost for the docker image.

changelog.d/6212.bugfix

@@ -0,0 +1 @@
+Fix bug where presence would not get timed out correctly if a synchrotron worker is used and restarted.

changelog.d/6214.misc

@@ -0,0 +1 @@
+Remove some unused event-auth code.

changelog.d/6216.bugfix

@@ -0,0 +1 @@
+synapse_port_db: Add 2 additional BOOLEAN_COLUMNS to be able to convert from database schema v56.

changelog.d/6217.misc

@@ -0,0 +1 @@
+Remove Auth.check method.

changelog.d/6219.misc

@@ -0,0 +1 @@
+Remove `format_tap.py` script in favour of a perl reimplementation in Sytest's repo.

contrib/docker/docker-compose.yml

@@ -15,9 +15,10 @@ services:
     restart: unless-stopped
     # See the readme for a full documentation of the environment settings
     environment:
-      - SYNAPSE_CONFIG_PATH=/data/homeserver.yaml
+      - SYNAPSE_CONFIG_PATH=/etc/homeserver.yaml
     volumes:
       # You may either store all the files in a local folder
+      - ./matrix-config:/etc
       - ./files:/data
       # .. or you may split this between different storage points
       # - ./files:/data
@@ -55,9 +56,6 @@ services:
     environment:
       - POSTGRES_USER=synapse
       - POSTGRES_PASSWORD=changeme
-      # ensure the database gets created correctly
-      # https://github.com/matrix-org/synapse/blob/master/docs/postgres.md#set-up-database
-      - POSTGRES_INITDB_ARGS=--encoding=UTF-8 --lc-collate=C --lc-ctype=C
     volumes:
       # You may store the database tables in a local folder..
       - ./schemas:/var/lib/postgresql/data

contrib/experiments/test_messaging.py

@@ -78,7 +78,7 @@ class InputOutput(object):
             m = re.match("^join (\S+)$", line)
             if m:
                 # The `sender` wants to join a room.
-                (room_name,) = m.groups()
+                room_name, = m.groups()
                 self.print_line("%s joining %s" % (self.user, room_name))
                 self.server.join_room(room_name, self.user, self.user)
                 # self.print_line("OK.")
@@ -105,7 +105,7 @@ class InputOutput(object):
             m = re.match("^backfill (\S+)$", line)
             if m:
                 # we want to backfill a room
-                (room_name,) = m.groups()
+                room_name, = m.groups()
                 self.print_line("backfill %s" % room_name)
                 self.server.backfill(room_name)
                 return
@@ -339,7 +339,7 @@ def main(stdscr):
     root_logger = logging.getLogger()
 
     formatter = logging.Formatter(
-        "%(asctime)s - %(name)s - %(lineno)d - %(levelname)s - %(message)s"
+        "%(asctime)s - %(name)s - %(lineno)d - " "%(levelname)s - %(message)s"
     )
     if not os.path.exists("logs"):
         os.makedirs("logs")

contrib/grafana/README.md

@@ -1,6 +1,6 @@
 # Using the Synapse Grafana dashboard
 
 0. Set up Prometheus and Grafana. Out of scope for this readme. Useful documentation about using Grafana with Prometheus: http://docs.grafana.org/features/datasources/prometheus/
-1. Have your Prometheus scrape your Synapse. https://github.com/matrix-org/synapse/blob/master/docs/metrics-howto.md
+1. Have your Prometheus scrape your Synapse. https://github.com/matrix-org/synapse/blob/master/docs/metrics-howto.rst
 2. Import dashboard into Grafana. Download `synapse.json`. Import it to Grafana and select the correct Prometheus datasource. http://docs.grafana.org/reference/export_import/
 3. Set up additional recording rules

contrib/grafana/synapse.json

@@ -18,7 +18,7 @@
   "gnetId": null,
   "graphTooltip": 0,
   "id": 1,
-  "iteration": 1584612489167,
+  "iteration": 1561447718159,
   "links": [
     {
       "asDropdown": true,
@@ -34,7 +34,6 @@
   "panels": [
     {
       "collapsed": false,
-      "datasource": null,
       "gridPos": {
         "h": 1,
         "w": 24,
@@ -53,14 +52,12 @@
       "dashes": false,
       "datasource": "$datasource",
       "fill": 1,
-      "fillGradient": 0,
       "gridPos": {
         "h": 9,
         "w": 12,
         "x": 0,
         "y": 1
       },
-      "hiddenSeries": false,
       "id": 75,
       "legend": {
         "avg": false,
@@ -75,9 +72,7 @@
       "linewidth": 1,
       "links": [],
       "nullPointMode": "null",
-      "options": {
-        "dataLinks": []
-      },
+      "options": {},
       "paceLength": 10,
       "percentage": false,
       "pointradius": 5,
@@ -156,7 +151,6 @@
       "editable": true,
       "error": false,
       "fill": 1,
-      "fillGradient": 0,
       "grid": {},
       "gridPos": {
         "h": 9,
@@ -164,7 +158,6 @@
         "x": 12,
         "y": 1
       },
-      "hiddenSeries": false,
       "id": 33,
       "legend": {
         "avg": false,
@@ -179,9 +172,7 @@
       "linewidth": 2,
       "links": [],
       "nullPointMode": "null",
-      "options": {
-        "dataLinks": []
-      },
+      "options": {},
       "paceLength": 10,
       "percentage": false,
       "pointradius": 5,
@@ -311,14 +302,12 @@
       "dashes": false,
       "datasource": "$datasource",
       "fill": 0,
-      "fillGradient": 0,
       "gridPos": {
         "h": 9,
         "w": 12,
         "x": 12,
         "y": 10
       },
-      "hiddenSeries": false,
       "id": 107,
       "legend": {
         "avg": false,
@@ -333,9 +322,7 @@
       "linewidth": 1,
       "links": [],
       "nullPointMode": "null",
-      "options": {
-        "dataLinks": []
-      },
+      "options": {},
       "paceLength": 10,
       "percentage": false,
       "pointradius": 5,
@@ -438,14 +425,12 @@
       "dashes": false,
       "datasource": "$datasource",
       "fill": 0,
-      "fillGradient": 0,
       "gridPos": {
         "h": 9,
         "w": 12,
         "x": 0,
         "y": 19
       },
-      "hiddenSeries": false,
       "id": 118,
       "legend": {
         "avg": false,
@@ -460,9 +445,7 @@
       "linewidth": 1,
       "links": [],
       "nullPointMode": "null",
-      "options": {
-        "dataLinks": []
-      },
+      "options": {},
       "paceLength": 10,
       "percentage": false,
       "pointradius": 5,
@@ -559,7 +542,6 @@
     },
     {
       "collapsed": true,
-      "datasource": null,
       "gridPos": {
         "h": 1,
         "w": 24,
@@ -1379,7 +1361,6 @@
     },
     {
       "collapsed": true,
-      "datasource": null,
       "gridPos": {
         "h": 1,
         "w": 24,
@@ -1751,7 +1732,6 @@
     },
     {
       "collapsed": true,
-      "datasource": null,
       "gridPos": {
         "h": 1,
         "w": 24,
@@ -2459,7 +2439,6 @@
     },
     {
       "collapsed": true,
-      "datasource": null,
       "gridPos": {
         "h": 1,
         "w": 24,
@@ -2656,7 +2635,6 @@
     },
     {
       "collapsed": true,
-      "datasource": null,
       "gridPos": {
         "h": 1,
         "w": 24,
@@ -2672,12 +2650,11 @@
           "dashes": false,
           "datasource": "$datasource",
           "fill": 1,
-          "fillGradient": 0,
           "gridPos": {
             "h": 9,
             "w": 12,
             "x": 0,
-            "y": 33
+            "y": 61
           },
           "id": 79,
           "legend": {
@@ -2693,9 +2670,6 @@
           "linewidth": 1,
           "links": [],
           "nullPointMode": "null",
-          "options": {
-            "dataLinks": []
-          },
           "paceLength": 10,
           "percentage": false,
           "pointradius": 5,
@@ -2710,13 +2684,8 @@
               "expr": "sum(rate(synapse_federation_client_sent_transactions{instance=\"$instance\"}[$bucket_size]))",
               "format": "time_series",
               "intervalFactor": 1,
-              "legendFormat": "successful txn rate",
+              "legendFormat": "txn rate",
               "refId": "A"
-            },
-            {
-              "expr": "sum(rate(synapse_util_metrics_block_count{block_name=\"_send_new_transaction\",instance=\"$instance\"}[$bucket_size]) - ignoring (block_name) rate(synapse_federation_client_sent_transactions{instance=\"$instance\"}[$bucket_size]))",
-              "legendFormat": "failed txn rate",
-              "refId": "B"
             }
           ],
           "thresholds": [],
@@ -2767,12 +2736,11 @@
           "dashes": false,
           "datasource": "$datasource",
           "fill": 1,
-          "fillGradient": 0,
           "gridPos": {
             "h": 9,
             "w": 12,
             "x": 12,
-            "y": 33
+            "y": 61
           },
           "id": 83,
           "legend": {
@@ -2788,9 +2756,6 @@
           "linewidth": 1,
           "links": [],
           "nullPointMode": "null",
-          "options": {
-            "dataLinks": []
-          },
           "paceLength": 10,
           "percentage": false,
           "pointradius": 5,
@@ -2864,12 +2829,11 @@
           "dashes": false,
           "datasource": "$datasource",
           "fill": 1,
-          "fillGradient": 0,
           "gridPos": {
             "h": 9,
             "w": 12,
             "x": 0,
-            "y": 42
+            "y": 70
           },
           "id": 109,
           "legend": {
@@ -2885,9 +2849,6 @@
           "linewidth": 1,
           "links": [],
           "nullPointMode": "null",
-          "options": {
-            "dataLinks": []
-          },
           "paceLength": 10,
           "percentage": false,
           "pointradius": 5,
@@ -2962,12 +2923,11 @@
           "dashes": false,
           "datasource": "$datasource",
           "fill": 1,
-          "fillGradient": 0,
           "gridPos": {
             "h": 9,
             "w": 12,
             "x": 12,
-            "y": 42
+            "y": 70
           },
           "id": 111,
           "legend": {
@@ -2983,9 +2943,6 @@
           "linewidth": 1,
           "links": [],
           "nullPointMode": "null",
-          "options": {
-            "dataLinks": []
-          },
           "paceLength": 10,
           "percentage": false,
           "pointradius": 5,
@@ -3052,7 +3009,6 @@
     },
     {
       "collapsed": true,
-      "datasource": null,
       "gridPos": {
         "h": 1,
         "w": 24,
@@ -3068,14 +3024,12 @@
           "dashes": false,
           "datasource": "$datasource",
           "fill": 1,
-          "fillGradient": 0,
           "gridPos": {
-            "h": 8,
+            "h": 7,
             "w": 12,
             "x": 0,
-            "y": 34
+            "y": 62
           },
-          "hiddenSeries": false,
           "id": 51,
           "legend": {
             "avg": false,
@@ -3090,9 +3044,6 @@
           "linewidth": 1,
           "links": [],
           "nullPointMode": "null",
-          "options": {
-            "dataLinks": []
-          },
           "paceLength": 10,
           "percentage": false,
           "pointradius": 5,
@@ -3161,95 +3112,6 @@
             "align": false,
             "alignLevel": null
           }
-        },
-        {
-          "aliasColors": {},
-          "bars": false,
-          "dashLength": 10,
-          "dashes": false,
-          "datasource": "$datasource",
-          "description": "",
-          "fill": 1,
-          "fillGradient": 0,
-          "gridPos": {
-            "h": 8,
-            "w": 12,
-            "x": 12,
-            "y": 34
-          },
-          "hiddenSeries": false,
-          "id": 134,
-          "legend": {
-            "avg": false,
-            "current": false,
-            "hideZero": false,
-            "max": false,
-            "min": false,
-            "show": true,
-            "total": false,
-            "values": false
-          },
-          "lines": true,
-          "linewidth": 1,
-          "nullPointMode": "null",
-          "options": {
-            "dataLinks": []
-          },
-          "percentage": false,
-          "pointradius": 2,
-          "points": false,
-          "renderer": "flot",
-          "seriesOverrides": [],
-          "spaceLength": 10,
-          "stack": false,
-          "steppedLine": false,
-          "targets": [
-            {
-              "expr": "topk(10,synapse_pushers{job=~\"$job\",index=~\"$index\", instance=\"$instance\"})",
-              "legendFormat": "{{kind}} {{app_id}}",
-              "refId": "A"
-            }
-          ],
-          "thresholds": [],
-          "timeFrom": null,
-          "timeRegions": [],
-          "timeShift": null,
-          "title": "Active pusher instances by app",
-          "tooltip": {
-            "shared": false,
-            "sort": 2,
-            "value_type": "individual"
-          },
-          "type": "graph",
-          "xaxis": {
-            "buckets": null,
-            "mode": "time",
-            "name": null,
-            "show": true,
-            "values": []
-          },
-          "yaxes": [
-            {
-              "format": "short",
-              "label": null,
-              "logBase": 1,
-              "max": null,
-              "min": null,
-              "show": true
-            },
-            {
-              "format": "short",
-              "label": null,
-              "logBase": 1,
-              "max": null,
-              "min": null,
-              "show": true
-            }
-          ],
-          "yaxis": {
-            "align": false,
-            "alignLevel": null
-          }
         }
       ],
       "repeat": null,
@@ -3258,7 +3120,6 @@
     },
     {
       "collapsed": true,
-      "datasource": null,
       "gridPos": {
         "h": 1,
         "w": 24,
@@ -3662,7 +3523,6 @@
     },
     {
       "collapsed": true,
-      "datasource": null,
       "gridPos": {
         "h": 1,
         "w": 24,
@@ -3680,7 +3540,6 @@
           "editable": true,
           "error": false,
           "fill": 1,
-          "fillGradient": 0,
           "grid": {},
           "gridPos": {
             "h": 13,
@@ -3703,9 +3562,6 @@
           "linewidth": 2,
           "links": [],
           "nullPointMode": "null",
-          "options": {
-            "dataLinks": []
-          },
           "paceLength": 10,
           "percentage": false,
           "pointradius": 5,
@@ -3774,7 +3630,6 @@
           "editable": true,
           "error": false,
           "fill": 1,
-          "fillGradient": 0,
           "grid": {},
           "gridPos": {
             "h": 13,
@@ -3797,9 +3652,6 @@
           "linewidth": 2,
           "links": [],
           "nullPointMode": "null",
-          "options": {
-            "dataLinks": []
-          },
           "paceLength": 10,
           "percentage": false,
           "pointradius": 5,
@@ -3868,7 +3720,6 @@
           "editable": true,
           "error": false,
           "fill": 1,
-          "fillGradient": 0,
           "grid": {},
           "gridPos": {
             "h": 13,
@@ -3891,9 +3742,6 @@
           "linewidth": 2,
           "links": [],
           "nullPointMode": "null",
-          "options": {
-            "dataLinks": []
-          },
           "paceLength": 10,
           "percentage": false,
           "pointradius": 5,
@@ -3962,7 +3810,6 @@
           "editable": true,
           "error": false,
           "fill": 1,
-          "fillGradient": 0,
           "grid": {},
           "gridPos": {
             "h": 13,
@@ -3985,9 +3832,6 @@
           "linewidth": 2,
           "links": [],
           "nullPointMode": "null",
-          "options": {
-            "dataLinks": []
-          },
           "paceLength": 10,
           "percentage": false,
           "pointradius": 5,
@@ -4077,7 +3921,6 @@
           "linewidth": 2,
           "links": [],
           "nullPointMode": "null",
-          "options": {},
           "paceLength": 10,
           "percentage": false,
           "pointradius": 5,
@@ -4167,7 +4010,6 @@
           "linewidth": 2,
           "links": [],
           "nullPointMode": "null",
-          "options": {},
           "paceLength": 10,
           "percentage": false,
           "pointradius": 5,
@@ -4234,7 +4076,6 @@
     },
     {
       "collapsed": true,
-      "datasource": null,
       "gridPos": {
         "h": 1,
         "w": 24,
@@ -4699,7 +4540,6 @@
     },
     {
       "collapsed": true,
-      "datasource": null,
       "gridPos": {
         "h": 1,
         "w": 24,
@@ -5220,7 +5060,6 @@
     },
     {
       "collapsed": true,
-      "datasource": null,
       "gridPos": {
         "h": 1,
         "w": 24,
@@ -5240,7 +5079,7 @@
             "h": 7,
             "w": 12,
             "x": 0,
-            "y": 39
+            "y": 67
           },
           "id": 2,
           "legend": {
@@ -5256,7 +5095,6 @@
           "linewidth": 1,
           "links": [],
           "nullPointMode": "null",
-          "options": {},
           "paceLength": 10,
           "percentage": false,
           "pointradius": 5,
@@ -5360,7 +5198,7 @@
             "h": 7,
             "w": 12,
             "x": 12,
-            "y": 39
+            "y": 67
           },
           "id": 41,
           "legend": {
@@ -5376,7 +5214,6 @@
           "linewidth": 1,
           "links": [],
           "nullPointMode": "null",
-          "options": {},
           "paceLength": 10,
           "percentage": false,
           "pointradius": 5,
@@ -5449,7 +5286,7 @@
             "h": 7,
             "w": 12,
             "x": 0,
-            "y": 46
+            "y": 74
           },
           "id": 42,
           "legend": {
@@ -5465,7 +5302,6 @@
           "linewidth": 1,
           "links": [],
           "nullPointMode": "null",
-          "options": {},
           "paceLength": 10,
           "percentage": false,
           "pointradius": 5,
@@ -5537,7 +5373,7 @@
             "h": 7,
             "w": 12,
             "x": 12,
-            "y": 46
+            "y": 74
           },
           "id": 43,
           "legend": {
@@ -5553,7 +5389,6 @@
           "linewidth": 1,
           "links": [],
           "nullPointMode": "null",
-          "options": {},
           "paceLength": 10,
           "percentage": false,
           "pointradius": 5,
@@ -5625,7 +5460,7 @@
             "h": 7,
             "w": 12,
             "x": 0,
-            "y": 53
+            "y": 81
           },
           "id": 113,
           "legend": {
@@ -5641,7 +5476,6 @@
           "linewidth": 1,
           "links": [],
           "nullPointMode": "null",
-          "options": {},
           "paceLength": 10,
           "percentage": false,
           "pointradius": 5,
@@ -5712,7 +5546,7 @@
             "h": 7,
             "w": 12,
             "x": 12,
-            "y": 53
+            "y": 81
           },
           "id": 115,
           "legend": {
@@ -5728,7 +5562,6 @@
           "linewidth": 1,
           "links": [],
           "nullPointMode": "null",
-          "options": {},
           "paceLength": 10,
           "percentage": false,
           "pointradius": 5,
@@ -5740,7 +5573,7 @@
           "steppedLine": false,
           "targets": [
             {
-              "expr": "rate(synapse_replication_tcp_protocol_close_reason{job=~\"$job\",index=~\"$index\",instance=\"$instance\"}[$bucket_size])",
+              "expr": "rate(synapse_replication_tcp_protocol_close_reason{job=\"$job\",index=~\"$index\",instance=\"$instance\"}[$bucket_size])",
               "format": "time_series",
               "intervalFactor": 1,
               "legendFormat": "{{job}}-{{index}} {{reason_type}}",
@@ -5795,7 +5628,6 @@
     },
     {
       "collapsed": true,
-      "datasource": null,
       "gridPos": {
         "h": 1,
         "w": 24,
@@ -5811,12 +5643,11 @@
           "dashes": false,
           "datasource": "$datasource",
           "fill": 1,
-          "fillGradient": 0,
           "gridPos": {
             "h": 9,
             "w": 12,
             "x": 0,
-            "y": 40
+            "y": 13
           },
           "id": 67,
           "legend": {
@@ -5832,9 +5663,7 @@
           "linewidth": 1,
           "links": [],
           "nullPointMode": "connected",
-          "options": {
-            "dataLinks": []
-          },
+          "options": {},
           "paceLength": 10,
           "percentage": false,
           "pointradius": 5,
@@ -5850,7 +5679,7 @@
               "format": "time_series",
               "interval": "",
               "intervalFactor": 1,
-              "legendFormat": "{{job}}-{{index}} {{name}}",
+              "legendFormat": "{{job}}-{{index}} ",
               "refId": "A"
             }
           ],
@@ -5902,12 +5731,11 @@
           "dashes": false,
           "datasource": "$datasource",
           "fill": 1,
-          "fillGradient": 0,
           "gridPos": {
             "h": 9,
             "w": 12,
             "x": 12,
-            "y": 40
+            "y": 13
           },
           "id": 71,
           "legend": {
@@ -5923,9 +5751,7 @@
           "linewidth": 1,
           "links": [],
           "nullPointMode": "connected",
-          "options": {
-            "dataLinks": []
-          },
+          "options": {},
           "paceLength": 10,
           "percentage": false,
           "pointradius": 5,
@@ -5993,12 +5819,11 @@
           "dashes": false,
           "datasource": "$datasource",
           "fill": 1,
-          "fillGradient": 0,
           "gridPos": {
             "h": 9,
             "w": 12,
             "x": 0,
-            "y": 49
+            "y": 22
           },
           "id": 121,
           "interval": "",
@@ -6015,9 +5840,7 @@
           "linewidth": 1,
           "links": [],
           "nullPointMode": "connected",
-          "options": {
-            "dataLinks": []
-          },
+          "options": {},
           "paceLength": 10,
           "percentage": false,
           "pointradius": 5,
@@ -6086,7 +5909,6 @@
     },
     {
       "collapsed": true,
-      "datasource": null,
       "gridPos": {
         "h": 1,
         "w": 24,
@@ -6785,7 +6607,7 @@
     }
   ],
   "refresh": "5m",
-  "schemaVersion": 22,
+  "schemaVersion": 18,
   "style": "dark",
   "tags": [
     "matrix"
@@ -6794,7 +6616,7 @@
     "list": [
       {
         "current": {
-          "selected": true,
+          "tags": [],
           "text": "Prometheus",
           "value": "Prometheus"
         },
@@ -6816,7 +6638,6 @@
         "auto_count": 100,
         "auto_min": "30s",
         "current": {
-          "selected": false,
           "text": "auto",
           "value": "$__auto_interval_bucket_size"
         },
@@ -6898,9 +6719,9 @@
         "allFormat": "regex wildcard",
         "allValue": "",
         "current": {
-          "text": "synapse",
+          "text": "All",
           "value": [
-            "synapse"
+            "$__all"
           ]
         },
         "datasource": "$datasource",
@@ -6930,9 +6751,7 @@
         "allValue": ".*",
         "current": {
           "text": "All",
-          "value": [
-            "$__all"
-          ]
+          "value": "$__all"
         },
         "datasource": "$datasource",
         "definition": "",
@@ -6991,5 +6810,5 @@
   "timezone": "",
   "title": "Synapse",
   "uid": "000000012",
-  "version": 19
+  "version": 10
 }

contrib/graph/graph2.py

@@ -36,7 +36,7 @@ def make_graph(db_name, room_id, file_prefix, limit):
     args = [room_id]
 
     if limit:
-        sql += " ORDER BY topological_ordering DESC, stream_ordering DESC LIMIT ?"
+        sql += " ORDER BY topological_ordering DESC, stream_ordering DESC " "LIMIT ?"
 
         args.append(limit)
 
@@ -53,7 +53,7 @@ def make_graph(db_name, room_id, file_prefix, limit):
 
     for event in events:
         c = conn.execute(
-            "SELECT state_group FROM event_to_state_groups WHERE event_id = ?",
+            "SELECT state_group FROM event_to_state_groups " "WHERE event_id = ?",
             (event.event_id,),
         )
 

contrib/systemd/README.md

@@ -1,17 +0,0 @@
-# Setup Synapse with Systemd
-This is a setup for managing synapse with a user contributed systemd unit 
-file. It provides a `matrix-synapse` systemd unit file that should be tailored 
-to accommodate your installation in accordance with the installation 
-instructions provided in [installation instructions](../../INSTALL.md).
-
-## Setup
-1. Under the service section, ensure the `User` variable matches which user
-you installed synapse under and wish to run it as. 
-2. Under the service section, ensure the `WorkingDirectory` variable matches
-where you have installed synapse.
-3. Under the service section, ensure the `ExecStart` variable matches the
-appropriate locations of your installation.
-4. Copy the `matrix-synapse.service` to `/etc/systemd/system/`
-5. Start Synapse: `sudo systemctl start matrix-synapse`
-6. Verify Synapse is running: `sudo systemctl status matrix-synapse`
-7. *optional* Enable Synapse to start at system boot: `sudo systemctl enable matrix-synapse`

contrib/systemd/matrix-synapse.service

@@ -4,11 +4,8 @@
 #    systemctl enable matrix-synapse
 #    systemctl start matrix-synapse
 #
-# This assumes that Synapse has been installed by a user named
-# synapse.
-#
 # This assumes that Synapse has been installed in a virtualenv in
-# the user's home directory: `/home/synapse/synapse/env`.
+# /opt/synapse/env.
 #
 # **NOTE:** This is an example service file that may change in the future. If you
 # wish to use this please copy rather than symlink it.
@@ -25,8 +22,8 @@ Restart=on-abort
 User=synapse
 Group=nogroup
 
-WorkingDirectory=/home/synapse/synapse
-ExecStart=/home/synapse/synapse/env/bin/python -m synapse.app.homeserver --config-path=/home/synapse/synapse/homeserver.yaml
+WorkingDirectory=/opt/synapse
+ExecStart=/opt/synapse/env/bin/python -m synapse.app.homeserver --config-path=/opt/synapse/homeserver.yaml
 SyslogIdentifier=matrix-synapse
 
 # adjust the cache factor if necessary

debian/build_virtualenv

@@ -85,9 +85,6 @@ PYTHONPATH="$tmpdir" \
 
 ' > "${PACKAGE_BUILD_DIR}/etc/matrix-synapse/homeserver.yaml"
 
-# build the log config file
-"${TARGET_PYTHON}" -B "${VIRTUALENV_DIR}/bin/generate_log_config" \
-        --output-file="${PACKAGE_BUILD_DIR}/etc/matrix-synapse/log.yaml"
 
 # add a dependency on the right version of python to substvars.
 PYPKG=`basename $SNAKE`

debian/changelog

@@ -1,103 +1,3 @@
-matrix-synapse-py3 (1.12.0) stable; urgency=medium
-
-  * New synapse release 1.12.0.
-
- -- Synapse Packaging team <packages@matrix.org>  Mon, 23 Mar 2020 12:13:03 +0000
-
-matrix-synapse-py3 (1.11.1) stable; urgency=medium
-
-  * New synapse release 1.11.1.
-
- -- Synapse Packaging team <packages@matrix.org>  Tue, 03 Mar 2020 15:01:22 +0000
-
-matrix-synapse-py3 (1.11.0) stable; urgency=medium
-
-  * New synapse release 1.11.0.
-
- -- Synapse Packaging team <packages@matrix.org>  Fri, 21 Feb 2020 08:54:34 +0000
-
-matrix-synapse-py3 (1.10.1) stable; urgency=medium
-
-  * New synapse release 1.10.1.
-
- -- Synapse Packaging team <packages@matrix.org>  Mon, 17 Feb 2020 16:27:28 +0000
-
-matrix-synapse-py3 (1.10.0) stable; urgency=medium
-
-  * New synapse release 1.10.0.
-
- -- Synapse Packaging team <packages@matrix.org>  Wed, 12 Feb 2020 12:18:54 +0000
-
-matrix-synapse-py3 (1.9.1) stable; urgency=medium
-
-  * New synapse release 1.9.1.
-
- -- Synapse Packaging team <packages@matrix.org>  Tue, 28 Jan 2020 13:09:23 +0000
-
-matrix-synapse-py3 (1.9.0) stable; urgency=medium
-
-  * New synapse release 1.9.0.
-
- -- Synapse Packaging team <packages@matrix.org>  Thu, 23 Jan 2020 12:56:31 +0000
-
-matrix-synapse-py3 (1.8.0) stable; urgency=medium
-
-  [ Richard van der Hoff ]
-  * Automate generation of the default log configuration file.
-
-  [ Synapse Packaging team ]
-  * New synapse release 1.8.0.
-
- -- Synapse Packaging team <packages@matrix.org>  Thu, 09 Jan 2020 11:39:27 +0000
-
-matrix-synapse-py3 (1.7.3) stable; urgency=medium
-
-  * New synapse release 1.7.3.
-
- -- Synapse Packaging team <packages@matrix.org>  Tue, 31 Dec 2019 10:45:04 +0000
-
-matrix-synapse-py3 (1.7.2) stable; urgency=medium
-
-  * New synapse release 1.7.2.
-
- -- Synapse Packaging team <packages@matrix.org>  Fri, 20 Dec 2019 10:56:50 +0000
-
-matrix-synapse-py3 (1.7.1) stable; urgency=medium
-
-  * New synapse release 1.7.1.
-
- -- Synapse Packaging team <packages@matrix.org>  Wed, 18 Dec 2019 09:37:59 +0000
-
-matrix-synapse-py3 (1.7.0) stable; urgency=medium
-
-  * New synapse release 1.7.0.
-
- -- Synapse Packaging team <packages@matrix.org>  Fri, 13 Dec 2019 10:19:38 +0000
-
-matrix-synapse-py3 (1.6.1) stable; urgency=medium
-
-  * New synapse release 1.6.1.
-
- -- Synapse Packaging team <packages@matrix.org>  Thu, 28 Nov 2019 11:10:40 +0000
-
-matrix-synapse-py3 (1.6.0) stable; urgency=medium
-
-  * New synapse release 1.6.0.
-
- -- Synapse Packaging team <packages@matrix.org>  Tue, 26 Nov 2019 12:15:40 +0000
-
-matrix-synapse-py3 (1.5.1) stable; urgency=medium
-
-  * New synapse release 1.5.1.
-
- -- Synapse Packaging team <packages@matrix.org>  Wed, 06 Nov 2019 10:02:14 +0000
-
-matrix-synapse-py3 (1.5.0) stable; urgency=medium
-
-  * New synapse release 1.5.0.
-
- -- Synapse Packaging team <packages@matrix.org>  Tue, 29 Oct 2019 14:28:41 +0000
-
 matrix-synapse-py3 (1.4.1) stable; urgency=medium
 
   * New synapse release 1.4.1.

debian/install

@@ -1 +1,2 @@
+debian/log.yaml etc/matrix-synapse
 debian/manage_debconf.pl /opt/venvs/matrix-synapse/lib/

debian/log.yaml

@@ -0,0 +1,36 @@
+
+version: 1
+
+formatters:
+  precise:
+   format: '%(asctime)s - %(name)s - %(lineno)d - %(levelname)s - %(request)s- %(message)s'
+
+filters:
+  context:
+    (): synapse.logging.context.LoggingContextFilter
+    request: ""
+
+handlers:
+  file:
+    class: logging.handlers.RotatingFileHandler
+    formatter: precise
+    filename: /var/log/matrix-synapse/homeserver.log
+    maxBytes: 104857600
+    backupCount: 10
+    filters: [context]
+    encoding: utf8
+  console:
+    class: logging.StreamHandler
+    formatter: precise
+    level: WARN
+
+loggers:
+    synapse:
+        level: INFO
+
+    synapse.storage.SQL:
+        level: INFO
+
+root:
+    level: INFO
+    handlers: [file, console]

demo/start.sh

@@ -77,13 +77,14 @@ for port in 8080 8081 8082; do
 
         # Reduce the blacklist
         blacklist=$(cat <<-BLACK
-		# Set the blacklist so that it doesn't include 127.0.0.1, ::1
+		# Set the blacklist so that it doesn't include 127.0.0.1
 		federation_ip_range_blacklist:
 		  - '10.0.0.0/8'
 		  - '172.16.0.0/12'
 		  - '192.168.0.0/16'
 		  - '100.64.0.0/10'
 		  - '169.254.0.0/16'
+		  - '::1/128'
 		  - 'fe80::/64'
 		  - 'fc00::/7'
 		BLACK

docker/Dockerfile

@@ -16,7 +16,7 @@ ARG PYTHON_VERSION=3.7
 ###
 ### Stage 0: builder
 ###
-FROM docker.io/python:${PYTHON_VERSION}-alpine3.11 as builder
+FROM docker.io/python:${PYTHON_VERSION}-alpine3.10 as builder
 
 # install the OS build deps
 

docker/README.md

@@ -101,7 +101,7 @@ is suitable for local testing, but for any practical use, you will either need
 to use a reverse proxy, or configure Synapse to expose an HTTPS port.
 
 For documentation on using a reverse proxy, see
-https://github.com/matrix-org/synapse/blob/master/docs/reverse_proxy.md.
+https://github.com/matrix-org/synapse/blob/master/docs/reverse_proxy.rst.
 
 For more information on enabling TLS support in synapse itself, see
 https://github.com/matrix-org/synapse/blob/master/INSTALL.md#tls-certificates. Of
@@ -110,12 +110,12 @@ argument to `docker run`.
 
 ## Legacy dynamic configuration file support
 
-The docker image used to support creating a dynamic configuration file based
-on environment variables. This is no longer supported, and an error will be
-raised if you try to run synapse without a config file.
+For backwards-compatibility only, the docker image supports creating a dynamic
+configuration file based on environment variables. This is now deprecated, but
+is enabled when the `SYNAPSE_SERVER_NAME` variable is set (and `generate` is
+not given).
 
-It is, however, possible to generate a static configuration file based on
-the environment variables that were previously used. To do this, run the docker
+To migrate from a dynamic configuration file to a static one, run the docker
 container once with the environment variables set, and `migrate_config`
 command line option. For example:
 
@@ -127,23 +127,6 @@ docker run -it --rm \
     matrixdotorg/synapse:latest migrate_config
 ```
 
-This will generate the same configuration file as the legacy mode used, and
-will store it in `/data/homeserver.yaml`. You can then use it as shown above at
-[Running synapse](#running-synapse).
-
-Note that the defaults used in this configuration file may be different to
-those when generating a new config file with `generate`: for example, TLS is
-enabled by default in this mode. You are encouraged to inspect the generated
-configuration file and edit it to ensure it meets your needs.
-
-## Building the image
-
-If you need to build the image from a Synapse checkout, use the following `docker
- build` command from the repo's root:
-
-```
-docker build -t matrixdotorg/synapse -f docker/Dockerfile .
-```
-
-You can choose to build a different docker image by changing the value of the `-f` flag to
-point to another Dockerfile.
+This will generate the same configuration file as the legacy mode used, but
+will store it in `/data/homeserver.yaml` instead of a temporary location. You
+can then use it as shown above at [Running synapse](#running-synapse).

docker/start.py

@@ -169,11 +169,11 @@ def run_generate_config(environ, ownership):
     # log("running %s" % (args, ))
 
     if ownership is not None:
-        # make sure that synapse has perms to write to the data dir.
-        subprocess.check_output(["chown", ownership, data_dir])
-
         args = ["su-exec", ownership] + args
         os.execv("/sbin/su-exec", args)
+
+        # make sure that synapse has perms to write to the data dir.
+        subprocess.check_output(["chown", ownership, data_dir])
     else:
         os.execv("/usr/local/bin/python", args)
 
@@ -188,6 +188,11 @@ def main(args, environ):
     else:
         ownership = "{}:{}".format(desired_uid, desired_gid)
 
+    log(
+        "Container running as UserID %s:%s, ENV (or defaults) requests %s:%s"
+        % (os.getuid(), os.getgid(), desired_uid, desired_gid)
+    )
+
     if ownership is None:
         log("Will not perform chmod/su-exec as UserID already matches request")
 
@@ -208,30 +213,37 @@ def main(args, environ):
     if mode is not None:
         error("Unknown execution mode '%s'" % (mode,))
 
-    config_dir = environ.get("SYNAPSE_CONFIG_DIR", "/data")
-    config_path = environ.get("SYNAPSE_CONFIG_PATH", config_dir + "/homeserver.yaml")
-
-    if not os.path.exists(config_path):
-        if "SYNAPSE_SERVER_NAME" in environ:
+    if "SYNAPSE_SERVER_NAME" in environ:
+        # backwards-compatibility generate-a-config-on-the-fly mode
+        if "SYNAPSE_CONFIG_PATH" in environ:
             error(
-                """\
-Config file '%s' does not exist.
-
-The synapse docker image no longer supports generating a config file on-the-fly
-based on environment variables. You can migrate to a static config file by
-running with 'migrate_config'. See the README for more details.
-"""
-                % (config_path,)
+                "SYNAPSE_SERVER_NAME and SYNAPSE_CONFIG_PATH are mutually exclusive "
+                "except in `generate` or `migrate_config` mode."
             )
 
-        error(
-            "Config file '%s' does not exist. You should either create a new "
-            "config file by running with the `generate` argument (and then edit "
-            "the resulting file before restarting) or specify the path to an "
-            "existing config file with the SYNAPSE_CONFIG_PATH variable."
+        config_path = "/compiled/homeserver.yaml"
+        log(
+            "Generating config file '%s' on-the-fly from environment variables.\n"
+            "Note that this mode is deprecated. You can migrate to a static config\n"
+            "file by running with 'migrate_config'. See the README for more details."
             % (config_path,)
         )
 
+        generate_config_from_template("/compiled", config_path, environ, ownership)
+    else:
+        config_dir = environ.get("SYNAPSE_CONFIG_DIR", "/data")
+        config_path = environ.get(
+            "SYNAPSE_CONFIG_PATH", config_dir + "/homeserver.yaml"
+        )
+        if not os.path.exists(config_path):
+            error(
+                "Config file '%s' does not exist. You should either create a new "
+                "config file by running with the `generate` argument (and then edit "
+                "the resulting file before restarting) or specify the path to an "
+                "existing config file with the SYNAPSE_CONFIG_PATH variable."
+                % (config_path,)
+            )
+
     log("Starting synapse with config file " + config_path)
 
     args = ["python", "-m", synapse_worker, "--config-path", config_path]

docs/.sample_config_header.yaml

@@ -1,4 +1,4 @@
-# This file is maintained as an up-to-date snapshot of the default
+# The config is maintained as an up-to-date snapshot of the default
 # homeserver.yaml configuration generated by Synapse.
 #
 # It is intended to act as a reference for the default configuration,
@@ -10,5 +10,3 @@
 # homeserver.yaml. Instead, if you are starting from scratch, please generate
 # a fresh config using Synapse by following the instructions in INSTALL.md.
 
-################################################################################
-

docs/ACME.md

@@ -1,48 +1,12 @@
 # ACME
 
-From version 1.0 (June 2019) onwards, Synapse requires valid TLS
-certificates for communication between servers (by default on port
-`8448`) in addition to those that are client-facing (port `443`). To
-help homeserver admins fulfil this new requirement, Synapse v0.99.0
-introduced support for automatically provisioning certificates through 
-[Let's Encrypt](https://letsencrypt.org/) using the ACME protocol.
-
-## Deprecation of ACME v1
-
-In [March 2019](https://community.letsencrypt.org/t/end-of-life-plan-for-acmev1/88430),
-Let's Encrypt announced that they were deprecating version 1 of the ACME
-protocol, with the plan to disable the use of it for new accounts in
-November 2019, and for existing accounts in June 2020.
-
-Synapse doesn't currently support version 2 of the ACME protocol, which
-means that:
-
-* for existing installs, Synapse's built-in ACME support will continue
-  to work until June 2020.
-* for new installs, this feature will not work at all.
-
-Either way, it is recommended to move from Synapse's ACME support
-feature to an external automated tool such as [certbot](https://github.com/certbot/certbot)
-(or browse [this list](https://letsencrypt.org/fr/docs/client-options/)
-for an alternative ACME client).
-
-It's also recommended to use a reverse proxy for the server-facing
-communications (more documentation about this can be found
-[here](/docs/reverse_proxy.md)) as well as the client-facing ones and
-have it serve the certificates.
-
-In case you can't do that and need Synapse to serve them itself, make
-sure to set the `tls_certificate_path` configuration setting to the path
-of the certificate (make sure to use the certificate containing the full
-certification chain, e.g. `fullchain.pem` if using certbot) and
-`tls_private_key_path` to the path of the matching private key. Note
-that in this case you will need to restart Synapse after each
-certificate renewal so that Synapse stops using the old certificate.
-
-If you still want to use Synapse's built-in ACME support, the rest of
-this document explains how to set it up. 
-
-## Initial setup 
+Synapse v1.0 will require valid TLS certificates for communication between
+servers (port `8448` by default) in addition to those that are client-facing
+(port `443`). If you do not already have a valid certificate for your domain,
+the easiest way to get one is with Synapse's new ACME support, which will use
+the ACME protocol to provision a certificate automatically. Synapse v0.99.0+
+will provision server-to-server certificates automatically for you for free
+through [Let's Encrypt](https://letsencrypt.org/) if you tell it to.
 
 In the case that your `server_name` config variable is the same as
 the hostname that the client connects to, then the same certificate can be
@@ -68,6 +32,11 @@ If you already have certificates, you will need to back up or delete them
 (files `example.com.tls.crt` and `example.com.tls.key` in Synapse's root
 directory), Synapse's ACME implementation will not overwrite them.
 
+You may wish to use alternate methods such as Certbot to obtain a certificate
+from Let's Encrypt, depending on your server configuration. Of course, if you
+already have a valid certificate for your homeserver's domain, that can be
+placed in Synapse's config directory without the need for any ACME setup.
+
 ## ACME setup
 
 The main steps for enabling ACME support in short summary are:

docs/CAPTCHA_SETUP.md

@@ -4,7 +4,7 @@ The captcha mechanism used is Google's ReCaptcha. This requires API keys from Go
 
 ## Getting keys
 
-Requires a site/secret key pair from:
+Requires a public/private key pair from:
 
 <https://developers.google.com/recaptcha/>
 
@@ -15,8 +15,8 @@ Must be a reCAPTCHA v2 key using the "I'm not a robot" Checkbox option
 The keys are a config option on the home server config. If they are not
 visible, you can generate them via `--generate-config`. Set the following value:
 
-    recaptcha_public_key: YOUR_SITE_KEY
-    recaptcha_private_key: YOUR_SECRET_KEY
+    recaptcha_public_key: YOUR_PUBLIC_KEY
+    recaptcha_private_key: YOUR_PRIVATE_KEY
 
 In addition, you MUST enable captchas via:
 

docs/admin_api/media_admin_api.md

@@ -21,82 +21,3 @@ It returns a JSON body like the following:
     ]
 }
 ```
-
-# Quarantine media
-
-Quarantining media means that it is marked as inaccessible by users. It applies
-to any local media, and any locally-cached copies of remote media.
-
-The media file itself (and any thumbnails) is not deleted from the server.
-
-## Quarantining media by ID
-
-This API quarantines a single piece of local or remote media.
-
-Request:
-
-```
-POST /_synapse/admin/v1/media/quarantine/<server_name>/<media_id>
-
-{}
-```
-
-Where `server_name` is in the form of `example.org`, and `media_id` is in the
-form of `abcdefg12345...`.
-
-Response:
-
-```
-{}
-```
-
-## Quarantining media in a room
-
-This API quarantines all local and remote media in a room.
-
-Request:
-
-```
-POST /_synapse/admin/v1/room/<room_id>/media/quarantine
-
-{}
-```
-
-Where `room_id` is in the form of `!roomid12345:example.org`.
-
-Response:
-
-```
-{
-  "num_quarantined": 10  # The number of media items successfully quarantined
-}
-```
-
-Note that there is a legacy endpoint, `POST
-/_synapse/admin/v1/quarantine_media/<room_id >`, that operates the same.
-However, it is deprecated and may be removed in a future release.
-
-## Quarantining all media of a user
-
-This API quarantines all *local* media that a *local* user has uploaded. That is to say, if
-you would like to quarantine media uploaded by a user on a remote homeserver, you should
-instead use one of the other APIs.
-
-Request:
-
-```
-POST /_synapse/admin/v1/user/<user_id>/media/quarantine
-
-{}
-```
-
-Where `user_id` is in the form of `@bob:example.org`.
-
-Response:
-
-```
-{
-  "num_quarantined": 10  # The number of media items successfully quarantined
-}
-```
-

docs/admin_api/purge_history_api.rst

@@ -8,9 +8,6 @@ Depending on the amount of history being purged a call to the API may take
 several minutes or longer. During this period users will not be able to
 paginate further back in the room from the point being purged from.
 
-Note that Synapse requires at least one message in each room, so it will never
-delete the last message in a room.
-
 The API is:
 
 ``POST /_synapse/admin/v1/purge_history/<room_id>[/<event_id>]``

docs/admin_api/rooms.md

@@ -1,173 +0,0 @@
-# List Room API
-
-The List Room admin API allows server admins to get a list of rooms on their
-server. There are various parameters available that allow for filtering and
-sorting the returned list. This API supports pagination.
-
-## Parameters
-
-The following query parameters are available:
-
-* `from` - Offset in the returned list. Defaults to `0`.
-* `limit` - Maximum amount of rooms to return. Defaults to `100`.
-* `order_by` - The method in which to sort the returned list of rooms. Valid values are:
-  - `alphabetical` - Rooms are ordered alphabetically by room name. This is the default.
-  - `size` - Rooms are ordered by the number of members. Largest to smallest.
-* `dir` - Direction of room order. Either `f` for forwards or `b` for backwards. Setting
-          this value to `b` will reverse the above sort order. Defaults to `f`.
-* `search_term` - Filter rooms by their room name. Search term can be contained in any
-                  part of the room name. Defaults to no filtering.
-
-The following fields are possible in the JSON response body:
-
-* `rooms` - An array of objects, each containing information about a room.
-  - Room objects contain the following fields:
-    - `room_id` - The ID of the room.
-    - `name` - The name of the room.
-    - `canonical_alias` - The canonical (main) alias address of the room.
-    - `joined_members` - How many users are currently in the room.
-* `offset` - The current pagination offset in rooms. This parameter should be
-             used instead of `next_token` for room offset as `next_token` is
-             not intended to be parsed.
-* `total_rooms` - The total number of rooms this query can return. Using this
-                  and `offset`, you have enough information to know the current
-                  progression through the list.
-* `next_batch` - If this field is present, we know that there are potentially
-                 more rooms on the server that did not all fit into this response.
-                 We can use `next_batch` to get the "next page" of results. To do
-                 so, simply repeat your request, setting the `from` parameter to
-                 the value of `next_batch`.
-* `prev_batch` - If this field is present, it is possible to paginate backwards.
-                 Use `prev_batch` for the `from` value in the next request to
-                 get the "previous page" of results.
-
-## Usage
-
-A standard request with no filtering:
-
-```
-GET /_synapse/admin/v1/rooms
-
-{}
-```
-
-Response:
-
-```
-{
-  "rooms": [
-    {
-      "room_id": "!OGEhHVWSdvArJzumhm:matrix.org",
-      "name": "Matrix HQ",
-      "canonical_alias": "#matrix:matrix.org",
-      "joined_members": 8326
-    },
-    ... (8 hidden items) ...
-    {
-      "room_id": "!xYvNcQPhnkrdUmYczI:matrix.org",
-      "name": "This Week In Matrix (TWIM)",
-      "canonical_alias": "#twim:matrix.org",
-      "joined_members": 314
-    }
-  ],
-  "offset": 0,
-  "total_rooms": 10
-}
-```
-
-Filtering by room name:
-
-```
-GET /_synapse/admin/v1/rooms?search_term=TWIM
-
-{}
-```
-
-Response:
-
-```
-{
-  "rooms": [
-    {
-      "room_id": "!xYvNcQPhnkrdUmYczI:matrix.org",
-      "name": "This Week In Matrix (TWIM)",
-      "canonical_alias": "#twim:matrix.org",
-      "joined_members": 314
-    }
-  ],
-  "offset": 0,
-  "total_rooms": 1
-}
-```
-
-Paginating through a list of rooms:
-
-```
-GET /_synapse/admin/v1/rooms?order_by=size
-
-{}
-```
-
-Response:
-
-```
-{
-  "rooms": [
-    {
-      "room_id": "!OGEhHVWSdvArJzumhm:matrix.org",
-      "name": "Matrix HQ",
-      "canonical_alias": "#matrix:matrix.org",
-      "joined_members": 8326
-    },
-    ... (98 hidden items) ...
-    {
-      "room_id": "!xYvNcQPhnkrdUmYczI:matrix.org",
-      "name": "This Week In Matrix (TWIM)",
-      "canonical_alias": "#twim:matrix.org",
-      "joined_members": 314
-    }
-  ],
-  "offset": 0,
-  "total_rooms": 150
-  "next_token": 100
-}
-```
-
-The presence of the `next_token` parameter tells us that there are more rooms
-than returned in this request, and we need to make another request to get them.
-To get the next batch of room results, we repeat our request, setting the `from`
-parameter to the value of `next_token`.
-
-```
-GET /_synapse/admin/v1/rooms?order_by=size&from=100
-
-{}
-```
-
-Response:
-
-```
-{
-  "rooms": [
-    {
-      "room_id": "!mscvqgqpHYjBGDxNym:matrix.org",
-      "name": "Music Theory",
-      "canonical_alias": "#musictheory:matrix.org",
-      "joined_members": 127
-    },
-    ... (48 hidden items) ...
-    {
-      "room_id": "!twcBhHVdZlQWuuxBhN:termina.org.uk",
-      "name": "weechat-matrix",
-      "canonical_alias": "#weechat-matrix:termina.org.uk",
-      "joined_members": 137
-    }
-  ],
-  "offset": 100,
-  "prev_batch": 0,
-  "total_rooms": 150
-}
-```
-
-Once the `next_token` parameter is no longer present, we know we've reached the
-end of the list.

docs/admin_api/shutdown_room.md

@@ -1,72 +0,0 @@
-# Shutdown room API
-
-Shuts down a room, preventing new joins and moves local users and room aliases automatically
-to a new room. The new room will be created with the user specified by the
-`new_room_user_id` parameter as room administrator and will contain a message
-explaining what happened. Users invited to the new room will have power level
--10 by default, and thus be unable to speak. The old room's power levels will be changed to
-disallow any further invites or joins.
-
-The local server will only have the power to move local user and room aliases to
-the new room. Users on other servers will be unaffected.
-
-## API
-
-You will need to authenticate with an access token for an admin user.
-
-### URL
-
-`POST /_synapse/admin/v1/shutdown_room/{room_id}`
-
-### URL Parameters
-
-* `room_id` - The ID of the room (e.g `!someroom:example.com`)
-
-### JSON Body Parameters
-
-* `new_room_user_id` - Required. A string representing the user ID of the user that will admin
-                       the new room that all users in the old room will be moved to.
-* `room_name` - Optional. A string representing the name of the room that new users will be
-                invited to.
-* `message` - Optional. A string containing the first message that will be sent as
-              `new_room_user_id` in the new room. Ideally this will clearly convey why the
-               original room was shut down.
-              
-If not specified, the default value of `room_name` is "Content Violation
-Notification". The default value of `message` is "Sharing illegal content on
-othis server is not permitted and rooms in violation will be blocked."
-
-### Response Parameters
-
-* `kicked_users` - An integer number representing the number of users that
-                   were kicked.
-* `failed_to_kick_users` - An integer number representing the number of users
-                           that were not kicked.
-* `local_aliases` - An array of strings representing the local aliases that were migrated from
-                    the old room to the new.
-* `new_room_id` - A string representing the room ID of the new room.
-
-## Example
-
-Request:
-
-```
-POST /_synapse/admin/v1/shutdown_room/!somebadroom%3Aexample.com
-
-{
-    "new_room_user_id": "@someuser:example.com",
-    "room_name": "Content Violation Notification",
-    "message": "Bad Room has been shutdown due to content violations on this server. Please review our Terms of Service."
-}
-```
-
-Response:
-
-```
-{
-    "kicked_users": 5,
-    "failed_to_kick_users": 0,
-    "local_aliases": ["#badroom:example.com", "#evilsaloon:example.com],
-    "new_room_id": "!newroomid:example.com",
-},
-```

docs/admin_api/user_admin_api.rst

@@ -1,91 +1,3 @@
-Create or modify Account
-========================
-
-This API allows an administrator to create or modify a user account with a
-specific ``user_id``. Be aware that ``user_id`` is fully qualified: for example,
-``@user:server.com``.
-
-This api is::
-
-    PUT /_synapse/admin/v2/users/<user_id>
-
-with a body of:
-
-.. code:: json
-
-    {
-        "password": "user_password",
-        "displayname": "User",
-        "threepids": [
-            {
-                "medium": "email",
-                "address": "<user_mail_1>"
-            },
-            {
-                "medium": "email",
-                "address": "<user_mail_2>"
-            }
-        ],
-        "avatar_url": "<avatar_url>",
-        "admin": false,
-        "deactivated": false
-    }
-
-including an ``access_token`` of a server admin.
-
-The parameter ``displayname`` is optional and defaults to ``user_id``.
-The parameter ``threepids`` is optional.
-The parameter ``avatar_url`` is optional.
-The parameter ``admin`` is optional and defaults to 'false'.
-The parameter ``deactivated`` is optional and defaults to 'false'.
-The parameter ``password`` is optional. If provided the user's password is updated and all devices are logged out.
-If the user already exists then optional parameters default to the current value.
-
-List Accounts
-=============
-
-This API returns all local user accounts.
-
-The api is::
-
-    GET /_synapse/admin/v2/users?from=0&limit=10&guests=false
-
-including an ``access_token`` of a server admin.
-The parameters ``from`` and ``limit`` are required only for pagination.
-By default, a ``limit`` of 100 is used.
-The parameter ``user_id`` can be used to select only users with user ids that
-contain this value.
-The parameter ``guests=false`` can be used to exclude guest users,
-default is to include guest users.
-The parameter ``deactivated=true`` can be used to include deactivated users,
-default is to exclude deactivated users.
-If the endpoint does not return a ``next_token`` then there are no more users left.
-It returns a JSON body like the following:
-
-.. code:: json
-
-    {
-        "users": [
-            {
-                "name": "<user_id1>",
-                "password_hash": "<password_hash1>",
-                "is_guest": 0,
-                "admin": 0,
-                "user_type": null,
-                "deactivated": 0
-            }, {
-                "name": "<user_id2>",
-                "password_hash": "<password_hash2>",
-                "is_guest": 0,
-                "admin": 1,
-                "user_type": null,
-                "deactivated": 0
-            }
-        ],
-        "next_token": "100"
-    }
-
-
 Query Account
 =============
 
@@ -93,8 +5,7 @@ This API returns information about a specific user account.
 
 The api is::
 
-    GET /_synapse/admin/v1/whois/<user_id> (deprecated)
-    GET /_synapse/admin/v2/users/<user_id>
+    GET /_synapse/admin/v1/whois/<user_id>
 
 including an ``access_token`` of a server admin.
 
@@ -169,14 +80,11 @@ with a body of:
 .. code:: json
 
    {
-       "new_password": "<secret>",
-       "logout_devices": true,
+       "new_password": "<secret>"
    }
 
 including an ``access_token`` of a server admin.
 
-The parameter ``new_password`` is required.
-The parameter ``logout_devices`` is optional and defaults to ``true``.
 
 Get whether a user is a server administrator or not
 ===================================================

docs/code_style.md

@@ -30,7 +30,7 @@ The necessary tools are detailed below.
 
     Install `flake8` with:
 
-        pip install --upgrade flake8 flake8-comprehensions
+        pip install --upgrade flake8
 
     Check all application and test code with:
 
@@ -137,7 +137,6 @@ Some guidelines follow:
     correctly handles the top-level option being set to `None` (as it
     will be if no sub-options are enabled).
 -   Lines should be wrapped at 80 characters.
--   Use two-space indents.
 
 Example:
 
@@ -156,13 +155,13 @@ Example:
     # Settings for the frobber
     #
     frobber:
-      # frobbing speed. Defaults to 1.
-      #
-      #speed: 10
+       # frobbing speed. Defaults to 1.
+       #
+       #speed: 10
 
-      # frobbing distance. Defaults to 1000.
-      #
-      #distance: 100
+       # frobbing distance. Defaults to 1000.
+       #
+       #distance: 100
 
 Note that the sample configuration is generated from the synapse code
 and is maintained by a script, `scripts-dev/generate_sample_config`.

docs/delegate.md

@@ -1,94 +0,0 @@
-# Delegation
-
-By default, other homeservers will expect to be able to reach yours via
-your `server_name`, on port 8448. For example, if you set your `server_name`
-to `example.com` (so that your user names look like `@user:example.com`),
-other servers will try to connect to yours at `https://example.com:8448/`.
-
-Delegation is a Matrix feature allowing a homeserver admin to retain a
-`server_name` of `example.com` so that user IDs, room aliases, etc continue
-to look like `*:example.com`, whilst having federation traffic routed
-to a different server and/or port (e.g. `synapse.example.com:443`).
-
-## .well-known delegation
-
-To use this method, you need to be able to alter the
-`server_name` 's https server to serve the `/.well-known/matrix/server`
-URL. Having an active server (with a valid TLS certificate) serving your
-`server_name` domain is out of the scope of this documentation.
-
-The URL `https://<server_name>/.well-known/matrix/server` should
-return a JSON structure containing the key `m.server` like so:
-
-```json
-{
-    "m.server": "<synapse.server.name>[:<yourport>]"
-}
-```
-
-In our example, this would mean that URL `https://example.com/.well-known/matrix/server`
-should return:
-
-```json
-{
-    "m.server": "synapse.example.com:443"
-}
-```
-
-Note, specifying a port is optional. If no port is specified, then it defaults
-to 8448.
-
-With .well-known delegation, federating servers will check for a valid TLS
-certificate for the delegated hostname (in our example: `synapse.example.com`).
-
-## SRV DNS record delegation
-
-It is also possible to do delegation using a SRV DNS record. However, that is
-considered an advanced topic since it's a bit complex to set up, and `.well-known`
-delegation is already enough in most cases.
-
-However, if you really need it, you can find some documentation on how such a
-record should look like and how Synapse will use it in [the Matrix
-specification](https://matrix.org/docs/spec/server_server/latest#resolving-server-names).
-
-## Delegation FAQ
-
-### When do I need delegation?
-
-If your homeserver's APIs are accessible on the default federation port (8448)
-and the domain your `server_name` points to, you do not need any delegation.
-
-For instance, if you registered `example.com` and pointed its DNS A record at a
-fresh server, you could install Synapse on that host, giving it a `server_name`
-of `example.com`, and once a reverse proxy has been set up to proxy all requests
-sent to the port `8448` and serve TLS certificates for `example.com`, you
-wouldn't need any delegation set up.
-
-**However**, if your homeserver's APIs aren't accessible on port 8448 and on the
-domain `server_name` points to, you will need to let other servers know how to
-find it using delegation.
-
-### Do you still recommend against using a reverse proxy on the federation port?
-
-We no longer actively recommend against using a reverse proxy. Many admins will
-find it easier to direct federation traffic to a reverse proxy and manage their
-own TLS certificates, and this is a supported configuration.
-
-See [reverse_proxy.md](reverse_proxy.md) for information on setting up a
-reverse proxy.
-
-### Do I still need to give my TLS certificates to Synapse if I am using a reverse proxy?
-
-This is no longer necessary. If you are using a reverse proxy for all of your
-TLS traffic, then you can set `no_tls: True` in the Synapse config.
-
-In that case, the only reason Synapse needs the certificate is to populate a legacy
-`tls_fingerprints` field in the federation API. This is ignored by Synapse 0.99.0
-and later, and the only time pre-0.99 Synapses will check it is when attempting to
-fetch the server keys - and generally this is delegated via `matrix.org`, which
-is running a modern version of Synapse.
-
-### Do I need the same certificate for the client and federation port?
-
-No. There is nothing stopping you from using different certificates,
-particularly if you are using a reverse proxy.

docs/federate.md

@@ -1,41 +1,181 @@
-Setting up federation
+Setting up Federation
 =====================
 
 Federation is the process by which users on different servers can participate
 in the same room. For this to work, those other servers must be able to contact
 yours to send messages.
 
-The `server_name` configured in the Synapse configuration file (often
-`homeserver.yaml`) defines how resources (users, rooms, etc.) will be
-identified (eg: `@user:example.com`, `#room:example.com`). By default,
-it is also the domain that other servers will use to try to reach your
-server (via port 8448). This is easy to set up and will work provided
-you set the `server_name` to match your machine's public DNS hostname.
-
-For this default configuration to work, you will need to listen for TLS
-connections on port 8448. The preferred way to do that is by using a
-reverse proxy: see [reverse_proxy.md](<reverse_proxy.md>) for instructions
-on how to correctly set one up.
-
-In some cases you might not want to run Synapse on the machine that has
-the `server_name` as its public DNS hostname, or you might want federation
-traffic to use a different port than 8448. For example, you might want to
-have your user names look like `@user:example.com`, but you want to run
-Synapse on `synapse.example.com` on port 443. This can be done using
-delegation, which allows an admin to control where federation traffic should
-be sent. See [delegate.md](delegate.md) for instructions on how to set this up.
+The ``server_name`` configured in the Synapse configuration file (often
+``homeserver.yaml``) defines how resources (users, rooms, etc.) will be
+identified (eg: ``@user:example.com``, ``#room:example.com``). By
+default, it is also the domain that other servers will use to
+try to reach your server (via port 8448). This is easy to set
+up and will work provided you set the ``server_name`` to match your
+machine's public DNS hostname, and provide Synapse with a TLS certificate
+which is valid for your ``server_name``.
 
 Once federation has been configured, you should be able to join a room over
-federation. A good place to start is `#synapse:matrix.org` - a room for
+federation. A good place to start is ``#synapse:matrix.org`` - a room for
 Synapse admins.
 
+
+## Delegation
+
+For a more flexible configuration, you can have ``server_name``
+resources (eg: ``@user:example.com``) served by a different host and
+port (eg: ``synapse.example.com:443``). There are two ways to do this:
+
+- adding a ``/.well-known/matrix/server`` URL served on ``https://example.com``.
+- adding a DNS ``SRV`` record in the DNS zone of domain
+  ``example.com``.
+
+Without configuring delegation, the matrix federation will
+expect to find your server via ``example.com:8448``. The following methods
+allow you retain a `server_name` of `example.com` so that your user IDs, room
+aliases, etc continue to look like `*:example.com`, whilst having your
+federation traffic routed to a different server.
+
+### .well-known delegation
+
+To use this method, you need to be able to alter the
+``server_name`` 's https server to serve the ``/.well-known/matrix/server``
+URL. Having an active server (with a valid TLS certificate) serving your
+``server_name`` domain is out of the scope of this documentation.
+
+The URL ``https://<server_name>/.well-known/matrix/server`` should
+return a JSON structure containing the key ``m.server`` like so:
+
+    {
+	    "m.server": "<synapse.server.name>[:<yourport>]"
+    }
+
+In our example, this would mean that URL ``https://example.com/.well-known/matrix/server``
+should return:
+
+    {
+	    "m.server": "synapse.example.com:443"
+    }
+
+Note, specifying a port is optional. If a port is not specified an SRV lookup
+is performed, as described below. If the target of the
+delegation does not have an SRV record, then the port defaults to 8448.
+
+Most installations will not need to configure .well-known. However, it can be
+useful in cases where the admin is hosting on behalf of someone else and
+therefore cannot gain access to the necessary certificate. With .well-known,
+federation servers will check for a valid TLS certificate for the delegated
+hostname (in our example: ``synapse.example.com``).
+
+.well-known support first appeared in Synapse v0.99.0. To federate with older
+servers you may need to additionally configure SRV delegation. Alternatively,
+encourage the server admin in question to upgrade :).
+
+### DNS SRV delegation
+
+To use this delegation method, you need to have write access to your
+``server_name`` 's domain zone DNS records (in our example it would be
+``example.com`` DNS zone).
+
+This method requires the target server to provide a
+valid TLS certificate for the original ``server_name``.
+
+You need to add a SRV record in your ``server_name`` 's DNS zone with
+this format:
+
+     _matrix._tcp.<yourdomain.com> <ttl> IN SRV <priority> <weight> <port> <synapse.server.name>
+
+In our example, we would need to add this SRV record in the
+``example.com`` DNS zone:
+
+     _matrix._tcp.example.com. 3600 IN SRV 10 5 443 synapse.example.com.
+
+Once done and set up, you can check the DNS record with ``dig -t srv
+_matrix._tcp.<server_name>``. In our example, we would expect this:
+
+    $ dig -t srv _matrix._tcp.example.com
+    _matrix._tcp.example.com. 3600    IN      SRV     10 0 443 synapse.example.com.
+
+Note that the target of a SRV record cannot be an alias (CNAME record): it has to point
+directly to the server hosting the synapse instance.
+
+### Delegation FAQ
+#### When do I need a SRV record or .well-known URI?
+
+If your homeserver listens on the default federation port (8448), and your
+`server_name` points to the host that your homeserver runs on, you do not need an SRV
+record or `.well-known/matrix/server` URI.
+
+For instance, if you registered `example.com` and pointed its DNS A record at a
+fresh server, you could install Synapse on that host,
+giving it a `server_name` of `example.com`, and once [ACME](acme.md) support is enabled,
+it would automatically generate a valid TLS certificate for you via Let's Encrypt
+and no SRV record or .well-known URI would be needed.
+
+This is the common case, although you can add an SRV record or
+`.well-known/matrix/server` URI for completeness if you wish.
+
+**However**, if your server does not listen on port 8448, or if your `server_name`
+does not point to the host that your homeserver runs on, you will need to let
+other servers know how to find it. The way to do this is via .well-known or an
+SRV record.
+
+#### I have created a .well-known URI. Do I still need an SRV record?
+
+As of Synapse 0.99, Synapse will first check for the existence of a .well-known
+URI and follow any delegation it suggests. It will only then check for the
+existence of an SRV record.
+
+That means that the SRV record will often be redundant. However, you should
+remember that there may still be older versions of Synapse in the federation
+which do not understand .well-known URIs, so if you removed your SRV record
+you would no longer be able to federate with them.
+
+It is therefore best to leave the SRV record in place for now. Synapse 0.34 and
+earlier will follow the SRV record (and not care about the invalid
+certificate). Synapse 0.99 and later will follow the .well-known URI, with the
+correct certificate chain.
+
+#### Can I manage my own certificates rather than having Synapse renew certificates itself?
+
+Yes, you are welcome to manage your certificates yourself. Synapse will only
+attempt to obtain certificates from Let's Encrypt if you configure it to do
+so.The only requirement is that there is a valid TLS cert present for
+federation end points.
+
+#### Do you still recommend against using a reverse proxy on the federation port?
+
+We no longer actively recommend against using a reverse proxy. Many admins will
+find it easier to direct federation traffic to a reverse proxy and manage their
+own TLS certificates, and this is a supported configuration.
+
+See [reverse_proxy.md](reverse_proxy.md) for information on setting up a
+reverse proxy.
+
+#### Do I still need to give my TLS certificates to Synapse if I am using a reverse proxy?
+
+Practically speaking, this is no longer necessary.
+
+If you are using a reverse proxy for all of your TLS traffic, then you can set
+`no_tls: True` in the Synapse config. In that case, the only reason Synapse
+needs the certificate is to populate a legacy `tls_fingerprints` field in the
+federation API. This is ignored by Synapse 0.99.0 and later, and the only time
+pre-0.99 Synapses will check it is when attempting to fetch the server keys -
+and generally this is delegated via `matrix.org`, which will be running a modern
+version of Synapse.
+
+#### Do I need the same certificate for the client and federation port?
+
+No. There is nothing stopping you from using different certificates,
+particularly if you are using a reverse proxy. However, Synapse will use the
+same certificate on any ports where TLS is configured.
+
 ## Troubleshooting
 
-You can use the [federation tester](https://matrix.org/federationtester)
-to check if your homeserver is configured correctly. Alternatively try the
-[JSON API used by the federation tester](https://matrix.org/federationtester/api/report?server_name=DOMAIN).
-Note that you'll have to modify this URL to replace `DOMAIN` with your
-`server_name`. Hitting the API directly provides extra detail.
+You can use the [federation tester](
+<https://matrix.org/federationtester>) to check if your homeserver is
+configured correctly. Alternatively try the [JSON API used by the federation tester](https://matrix.org/federationtester/api/report?server_name=DOMAIN).
+Note that you'll have to modify this URL to replace ``DOMAIN`` with your
+``server_name``. Hitting the API directly provides extra detail.
 
 The typical failure mode for federation is that when the server tries to join
 a room, it is rejected with "401: Unauthorized". Generally this means that other
@@ -47,8 +187,8 @@ you invite them to. This can be caused by an incorrectly-configured reverse
 proxy: see [reverse_proxy.md](<reverse_proxy.md>) for instructions on how to correctly
 configure a reverse proxy.
 
-## Running a demo federation of Synapses
+## Running a Demo Federation of Synapses
 
 If you want to get up and running quickly with a trio of homeservers in a
-private federation, there is a script in the `demo` directory. This is mainly
+private federation, there is a script in the ``demo`` directory. This is mainly
 useful just for development purposes. See [demo/README](<../demo/README>).

docs/message_retention_policies.md

@@ -1,195 +0,0 @@
-# Message retention policies
-
-Synapse admins can enable support for message retention policies on
-their homeserver. Message retention policies exist at a room level,
-follow the semantics described in
-[MSC1763](https://github.com/matrix-org/matrix-doc/blob/matthew/msc1763/proposals/1763-configurable-retention-periods.md),
-and allow server and room admins to configure how long messages should
-be kept in a homeserver's database before being purged from it.
-**Please note that, as this feature isn't part of the Matrix
-specification yet, this implementation is to be considered as
-experimental.** 
-
-A message retention policy is mainly defined by its `max_lifetime`
-parameter, which defines how long a message can be kept around after
-it was sent to the room. If a room doesn't have a message retention
-policy, and there's no default one for a given server, then no message
-sent in that room is ever purged on that server.
-
-MSC1763 also specifies semantics for a `min_lifetime` parameter which
-defines the amount of time after which an event _can_ get purged (after
-it was sent to the room), but Synapse doesn't currently support it
-beyond registering it.
-
-Both `max_lifetime` and `min_lifetime` are optional parameters.
-
-Note that message retention policies don't apply to state events.
-
-Once an event reaches its expiry date (defined as the time it was sent
-plus the value for `max_lifetime` in the room), two things happen:
-
-* Synapse stops serving the event to clients via any endpoint.
-* The message gets picked up by the next purge job (see the "Purge jobs"
-  section) and is removed from Synapse's database.
-
-Since purge jobs don't run continuously, this means that an event might
-stay in a server's database for longer than the value for `max_lifetime`
-in the room would allow, though hidden from clients.
-
-Similarly, if a server (with support for message retention policies
-enabled) receives from another server an event that should have been
-purged according to its room's policy, then the receiving server will
-process and store that event until it's picked up by the next purge job,
-though it will always hide it from clients.
-
-Synapse requires at least one message in each room, so it will never
-delete the last message in a room. It will, however, hide it from
-clients.
-
-
-## Server configuration
-
-Support for this feature can be enabled and configured in the
-`retention` section of the Synapse configuration file (see the
-[sample file](https://github.com/matrix-org/synapse/blob/v1.7.3/docs/sample_config.yaml#L332-L393)).
-
-To enable support for message retention policies, set the setting
-`enabled` in this section to `true`.
-
-
-### Default policy
-
-A default message retention policy is a policy defined in Synapse's
-configuration that is used by Synapse for every room that doesn't have a
-message retention policy configured in its state. This allows server
-admins to ensure that messages are never kept indefinitely in a server's
-database. 
-
-A default policy can be defined as such, in the `retention` section of
-the configuration file:
-
-```yaml
-  default_policy:
-    min_lifetime: 1d
-    max_lifetime: 1y
-```
-
-Here, `min_lifetime` and `max_lifetime` have the same meaning and level
-of support as previously described. They can be expressed either as a
-duration (using the units `s` (seconds), `m` (minutes), `h` (hours),
-`d` (days), `w` (weeks) and `y` (years)) or as a number of milliseconds.
-
-
-### Purge jobs
-
-Purge jobs are the jobs that Synapse runs in the background to purge
-expired events from the database. They are only run if support for
-message retention policies is enabled in the server's configuration. If
-no configuration for purge jobs is configured by the server admin,
-Synapse will use a default configuration, which is described in the
-[sample configuration file](https://github.com/matrix-org/synapse/blob/master/docs/sample_config.yaml#L332-L393).
-
-Some server admins might want a finer control on when events are removed
-depending on an event's room's policy. This can be done by setting the
-`purge_jobs` sub-section in the `retention` section of the configuration
-file. An example of such configuration could be:
-
-```yaml
-  purge_jobs:
-    - longest_max_lifetime: 3d
-      interval: 12h
-    - shortest_max_lifetime: 3d
-      longest_max_lifetime: 1w
-      interval: 1d
-    - shortest_max_lifetime: 1w
-      interval: 2d
-```
-
-In this example, we define three jobs:
-
-* one that runs twice a day (every 12 hours) and purges events in rooms
-  which policy's `max_lifetime` is lower or equal to 3 days.
-* one that runs once a day and purges events in rooms which policy's
-  `max_lifetime` is between 3 days and a week.
-* one that runs once every 2 days and purges events in rooms which
-  policy's `max_lifetime` is greater than a week.
-
-Note that this example is tailored to show different configurations and
-features slightly more jobs than it's probably necessary (in practice, a
-server admin would probably consider it better to replace the two last
-jobs with one that runs once a day and handles rooms which which
-policy's `max_lifetime` is greater than 3 days).
-
-Keep in mind, when configuring these jobs, that a purge job can become
-quite heavy on the server if it targets many rooms, therefore prefer
-having jobs with a low interval that target a limited set of rooms. Also
-make sure to include a job with no minimum and one with no maximum to
-make sure your configuration handles every policy.
-
-As previously mentioned in this documentation, while a purge job that
-runs e.g. every day means that an expired event might stay in the
-database for up to a day after its expiry, Synapse hides expired events
-from clients as soon as they expire, so the event is not visible to
-local users between its expiry date and the moment it gets purged from
-the server's database.
-
-
-### Lifetime limits
-
-**Note: this feature is mainly useful within a closed federation or on
-servers that don't federate, because there currently is no way to
-enforce these limits in an open federation.**
-
-Server admins can restrict the values their local users are allowed to
-use for both `min_lifetime` and `max_lifetime`. These limits can be
-defined as such in the `retention` section of the configuration file:
-
-```yaml
-  allowed_lifetime_min: 1d
-  allowed_lifetime_max: 1y
-```
-
-Here, `allowed_lifetime_min` is the lowest value a local user can set
-for both `min_lifetime` and `max_lifetime`, and `allowed_lifetime_max`
-is the highest value. Both parameters are optional (e.g. setting
-`allowed_lifetime_min` but not `allowed_lifetime_max` only enforces a
-minimum and no maximum).
-
-Like other settings in this section, these parameters can be expressed
-either as a duration or as a number of milliseconds.
-
-
-## Room configuration
-
-To configure a room's message retention policy, a room's admin or
-moderator needs to send a state event in that room with the type
-`m.room.retention` and the following content:
-
-```json
-{
-    "max_lifetime": ...
-}
-```
-
-In this event's content, the `max_lifetime` parameter has the same
-meaning as previously described, and needs to be expressed in
-milliseconds. The event's content can also include a `min_lifetime`
-parameter, which has the same meaning and limited support as previously
-described.
-
-Note that over every server in the room, only the ones with support for
-message retention policies will actually remove expired events. This
-support is currently not enabled by default in Synapse.
-
-
-## Note on reclaiming disk space
-
-While purge jobs actually delete data from the database, the disk space
-used by the database might not decrease immediately on the database's
-host. However, even though the database engine won't free up the disk
-space, it will start writing new data into where the purged data was.
-
-If you want to reclaim the freed disk space anyway and return it to the
-operating system, the server admin needs to run `VACUUM FULL;` (or
-`VACUUM;` for SQLite databases) on Synapse's database (see the related
-[PostgreSQL documentation](https://www.postgresql.org/docs/current/sql-vacuum.html)).