mjolnir/README.md

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# mjolnir
A moderation tool for Matrix. Visit [#mjolnir:matrix.org](https://matrix.to/#/#mjolnir:matrix.org)
for more information.
## Features
TODO: Describe what all this means.
Phase 1:
* [x] Ban users
* [x] ACL servers
* [x] Update lists with new bans/ACLs
Phase 2:
* [x] Pantalaimon support
* [x] No-op mode (for verifying behaviour)
* [x] Redact messages on ban (optionally)
* [x] More useful spam in management room
* [x] Command to import ACLs, etc from rooms
* [x] Vet rooms on startup option
* [x] Command to actually unban users (instead of leaving them stuck)
* [x] Support multiple lists
Phase 3:
* [x] Synapse antispam module
* [ ] Room upgrade handling (both protected+list rooms)
* [ ] Support community-defined scopes? (ie: no hardcoded config)
* [ ] Riot hooks (independent of mjolnir?)
## Docker (preferred)
Mjolnir is on Docker Hub as [matrixdotorg/mjolnir](https://hub.docker.com/r/matrixdotorg/mjolnir)
but can be built yourself with `docker build -t mjolnir .`.
```bash
git clone https://github.com/matrix-org/mjolnir.git
cd mjolnir
# Copy and edit the config. It is not recommended to change the data path.
mkdir -p /etc/mjolnir
cp config/default.yaml /etc/mjolnir/production.yaml
nano /etc/mjolnir/production.yaml
docker run --rm -it -v /etc/mjolnir:/data matrixdotorg/mjolnir:latest
```
## Build it
This bot requires `yarn` and Node 10.
```bash
git clone https://github.com/matrix-org/mjolnir.git
cd mjolnir
yarn install
yarn build
# Copy and edit the config. It *is* recommended to change the data path.
cp config/default.yaml config/development.yaml
nano config/development.yaml
node lib/index.js
```
## Synapse Antispam Module
Using the bot to manage your rooms is great, however if you want to use your ban lists
(or someone else's) on your server to affect all of your users then an antispam module
is needed. Primarily meant to block invites from undesired homeservers/users, Mjolnir's
antispam module is a way to interpret ban lists and apply them to your entire homeserver.
First, install the module to your Synapse python environment:
```
pip install -e git+https://github.com/matrix-org/mjolnir.git#egg=mjolnir&subdirectory=synapse_antispam
```
*Note*: Where your python environment is depends on your installation method. Visit
[#synapse:matrix.org](https://matrix.to/#/#synapse:matrix.org) if you're not sure.
Then add the following to your `homeserver.yaml`:
```yaml
spam_checker:
module: mjolnir.AntiSpam
config:
# Prevent servers/users in the ban lists from inviting users on this
# server to rooms. Default true.
block_invites: true
# Flag messages sent by servers/users in the ban lists as spam. Currently
# this means that spammy messages will appear as empty to users. Default
# false.
block_messages: false
# The room IDs of the ban lists to honour. Unlike other parts of Mjolnir,
# this list cannot be room aliases or permalinks. This server is expected
# to already be joined to the room - Mjolnir will not automatically join
# these rooms.
ban_lists:
- "!roomid:example.org"
```
Be sure to change the configuration to match your setup. Your server is expected to
already be participating in the ban lists - if it is not, you will need to have a user
on your homeserver join. The antispam module will not join the rooms for you.
If you change the configuration, you will need to restart Synapse. You'll also need
to restart Synapse to install the plugin.
## Development
TODO. It's a TypeScript project with a linter.