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|
{ config, pkgs, lib, ... }:
with lib;
let
dataDir = "/var/lib/matrix-appservice-discord";
registrationFile = "${dataDir}/discord-registration.yaml";
appDir = "${pkgs.matrix-appservice-discord}/lib/node_modules/matrix-appservice-discord";
cfg = config.services.matrix-appservice-discord;
# TODO: switch to configGen.json once RFC42 is implemented
settingsFile = pkgs.writeText "matrix-appservice-discord-settings.json" (builtins.toJSON cfg.settings);
in {
options = {
services.matrix-appservice-discord = {
enable = mkEnableOption "a bridge between Matrix and Discord";
settings = mkOption rec {
# TODO: switch to types.config.json as prescribed by RFC42 once it's implemented
type = types.attrs;
apply = recursiveUpdate default;
default = {
database = {
filename = "${dataDir}/discord.db";
# TODO: remove those old config keys once the following issues are solved:
# * https://github.com/Half-Shot/matrix-appservice-discord/issues/490
# * https://github.com/Half-Shot/matrix-appservice-discord/issues/498
userStorePath = "${dataDir}/user-store.db";
roomStorePath = "${dataDir}/room-store.db";
};
# empty values necessary for registration file generation
# actual values defined in environmentFile
auth = {
clientID = "";
botToken = "";
};
};
example = literalExample ''
{
bridge = {
domain = "public-domain.tld";
homeserverUrl = "http://public-domain.tld:8008";
};
}
'';
description = ''
<filename>config.yaml</filename> configuration as a Nix attribute set.
</para>
<para>
Configuration options should match those described in
<link xlink:href="https://github.com/Half-Shot/matrix-appservice-discord/blob/master/config/config.sample.yaml">
config.sample.yaml</link>.
</para>
<para>
<option>config.bridge.domain</option> and <option>config.bridge.homeserverUrl</option>
should be set to match the public host name of the Matrix homeserver for webhooks and avatars to work.
</para>
<para>
Secret tokens should be specified using <option>environmentFile</option>
instead of this world-readable attribute set.
'';
};
environmentFile = mkOption {
type = types.nullOr types.path;
default = null;
description = ''
File containing environment variables to be passed to the matrix-appservice-discord service,
in which secret tokens can be specified securely by defining values for
<literal>APPSERVICE_DISCORD_AUTH_CLIENT_I_D</literal> and
<literal>APPSERVICE_DISCORD_AUTH_BOT_TOKEN</literal>.
'';
};
url = mkOption {
type = types.str;
default = "http://localhost:${toString cfg.port}";
description = ''
The URL where the application service is listening for HS requests.
'';
};
port = mkOption {
type = types.port;
default = 9005; # from https://github.com/Half-Shot/matrix-appservice-discord/blob/master/package.json#L11
description = ''
Port number on which the bridge should listen for internal communication with the Matrix homeserver.
'';
};
localpart = mkOption {
type = with types; nullOr str;
default = null;
description = ''
The user_id localpart to assign to the AS.
'';
};
serviceDependencies = mkOption {
type = with types; listOf str;
default = optional config.services.matrix-synapse.enable "matrix-synapse.service";
description = ''
List of Systemd services to require and wait for when starting the application service,
such as the Matrix homeserver if it's running on the same host.
'';
};
};
};
config = mkIf cfg.enable {
systemd.services.matrix-appservice-discord = {
description = "A bridge between Matrix and Discord.";
wantedBy = [ "multi-user.target" ];
wants = [ "network-online.target" ] ++ cfg.serviceDependencies;
after = [ "network-online.target" ] ++ cfg.serviceDependencies;
preStart = ''
if [ ! -f '${registrationFile}' ]; then
${pkgs.matrix-appservice-discord}/bin/matrix-appservice-discord \
--generate-registration \
--url=${escapeShellArg cfg.url} \
${optionalString (cfg.localpart != null) "--localpart=${escapeShellArg cfg.localpart}"} \
--config='${settingsFile}' \
--file='${registrationFile}'
fi
'';
serviceConfig = {
Type = "simple";
Restart = "always";
ProtectSystem = "strict";
ProtectHome = true;
ProtectKernelTunables = true;
ProtectKernelModules = true;
ProtectControlGroups = true;
DynamicUser = true;
PrivateTmp = true;
WorkingDirectory = appDir;
StateDirectory = baseNameOf dataDir;
UMask = 0027;
EnvironmentFile = cfg.environmentFile;
ExecStart = ''
${pkgs.matrix-appservice-discord}/bin/matrix-appservice-discord \
--file='${registrationFile}' \
--config='${settingsFile}' \
--port='${toString cfg.port}'
'';
};
};
};
meta.maintainers = with maintainers; [ pacien ];
}
|