nix-files/hosts/by-name/servo/services/matrix/irc.nix

169 lines
6.3 KiB
Nix

# config docs:
# - <https://github.com/matrix-org/matrix-appservice-irc/blob/develop/config.sample.yaml>
# probably want to remove that.
{ config, lib, ... }:
let
ircServer = { name, additionalAddresses ? [], sasl ? true, port ? 6697 }: let
lowerName = lib.toLower name;
in {
# XXX sasl: appservice doesn't support NickServ identification (only SASL, or PASS if sasl = false)
inherit name additionalAddresses sasl port;
ssl = true;
botConfig = {
# bot has no presence in IRC channel; only real Matrix users
enabled = false;
# this is the IRC username/nickname *of the bot* (not visible in channels): not of the end-user.
# the irc username/nick of a mapped Matrix user is determined further down in `ircClients` section.
# if `enabled` is false, then this name probably never shows up on the IRC side (?)
nick = "uninsane";
username = "uninsane";
joinChannelsIfNoUsers = false;
};
dynamicChannels = {
enabled = true;
aliasTemplate = "#irc_${lowerName}_$CHANNEL";
published = false; # false => irc rooms aren't listed in homeserver public rooms list
federate = false; # false => Matrix users from other homeservers can't join IRC channels
};
ircClients = {
nickTemplate = "$LOCALPARTsane"; # @colin:uninsane.org (Matrix) -> colinsane (IRC)
realnameFormat = "reverse-mxid"; # @colin:uninsane.org (Matrix) -> org.uninsane:colin (IRC)
# realnameFormat = "localpart"; # @colin:uninsane.org (Matrix) -> colin (IRC) -- but requires the mxid patch below
# by default, Matrix will convert messages greater than (3) lines into a pastebin-like URL to send to IRC.
lineLimit = 20;
# Rizon in particular allows only 4 connections from one IP before a 30min ban.
# that's effectively reduced to 2 during a netsplit, or maybe during a restart.
# - https://wiki.rizon.net/index.php?title=Connection/Session_Limit_Exemptions
# especially, misconfigurations elsewhere in this config may cause hundreds of connections
# so this is a safeguard.
maxClients = 2;
# don't have the bridge disconnect me from IRC when idle.
idleTimeout = 0;
concurrentReconnectLimit = 2;
reconnectIntervalMs = 60000;
kickOn = {
# remove Matrix user from room when...
channelJoinFailure = false;
ircConnectionFailure = false;
userQuit = true;
};
};
matrixClients = {
userTemplate = "@irc_${lowerName}_$NICK"; # the :uninsane.org part is appended automatically
};
# this will let this user message the appservice with `!join #<IRCChannel>` and the rest "Just Works"
"@colin:uninsane.org" = "admin";
membershipLists = {
enabled = true;
global = {
ircToMatrix = {
initial = true;
incremental = true;
requireMatrixJoined = false;
};
matrixToIrc = {
initial = true;
incremental = true;
};
};
ignoreIdleUsersOnStartup = {
enabled = false; # false => always bridge users, even if idle
};
};
# sync room description?
bridgeInfoState = {
enabled = true;
initial = true;
};
# for per-user IRC password:
# - invite @irc_${lowerName}_NickServ:uninsane.org to a DM and type `help` => register
# - invite the matrix-appservice-irc user to a DM and type `!help` => add PW to database
# to validate that i'm authenticated on the IRC network, DM @irc_${lowerName}_NickServ:uninsane.org:
# - send: `STATUS colinsane`
# - response should be `3`: "user recognized as owner via password identification"
# passwordEncryptionKeyPath = "/path/to/privkey"; # appservice will generate its own if unspecified
};
in
{
nixpkgs.overlays = [
(next: prev: {
matrix-appservice-irc = prev.matrix-appservice-irc.overrideAttrs (super: {
patches = super.patches or [] ++ [
./irc-no-reveal-bridge.patch
# ./irc-no-reveal-mxid.patch
];
});
})
];
sane.persist.sys.byStore.plaintext = [
# TODO: mode?
{ user = "matrix-appservice-irc"; group = "matrix-appservice-irc"; path = "/var/lib/matrix-appservice-irc"; }
];
# XXX: matrix-appservice-irc PreStart tries to chgrp the registration.yml to matrix-synapse,
# which requires matrix-appservice-irc to be of that group
users.users.matrix-appservice-irc.extraGroups = [ "matrix-synapse" ];
# weird race conditions around registration.yml mean we want matrix-synapse to be of matrix-appservice-irc group too.
users.users.matrix-synapse.extraGroups = [ "matrix-appservice-irc" ];
services.matrix-synapse.settings.app_service_config_files = [
"/var/lib/matrix-appservice-irc/registration.yml" # auto-created by irc appservice
];
services.matrix-appservice-irc.enable = true;
services.matrix-appservice-irc.registrationUrl = "http://127.0.0.1:8009";
services.matrix-appservice-irc.settings = {
homeserver = {
url = "http://127.0.0.1:8008";
dropMatrixMessagesAfterSecs = 300;
domain = "uninsane.org";
enablePresence = true;
bindPort = 9999;
bindHost = "127.0.0.1";
};
ircService = {
servers = {
"irc.esper.net" = ircServer {
name = "esper";
sasl = false;
# notable channels:
# - #merveilles
};
"irc.libera.chat" = ircServer {
name = "libera";
sasl = false;
# notable channels:
# - #hare
# - #mnt-reform
};
"irc.myanonamouse.net" = ircServer {
name = "MyAnonamouse";
additionalAddresses = [ "irc2.myanonamouse.net" ];
sasl = false;
};
"irc.oftc.net" = ircServer {
name = "oftc";
sasl = false;
# notable channels:
# - #sxmo
# - #sxmo-offtopic
};
"irc.rizon.net" = ircServer { name = "Rizon"; };
};
};
};
systemd.services.matrix-appservice-irc.serviceConfig = {
# XXX 2023/06/20: nixos specifies this + @aio and @memlock as forbidden
# the service actively uses at least one of these, and both of them are fairly innocuous
SystemCallFilter = lib.mkForce "~@clock @cpu-emulation @debug @keyring @module @mount @obsolete @raw-io @setuid @swap";
};
}