37792e5766
systemd-247 provides a mechanism called LoadCredential for secrets and it is better than environment file. See the section of Environment= in the manual of systemd.exec for more information. Some options in config.yaml need values to be strings, which currently can be used with environmentFile but not loadCredential. But it's possible to use loadCredential for those options, e.g. we can substitute their values in ExecStart, but not in ExecStartPre due to [1]. [1]: https://github.com/systemd/systemd/issues/19604
298 lines
10 KiB
Nix
298 lines
10 KiB
Nix
{ config, lib, pkgs, ... }:
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let
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cfg = config.services.dendrite;
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settingsFormat = pkgs.formats.yaml { };
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configurationYaml = settingsFormat.generate "dendrite.yaml" cfg.settings;
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workingDir = "/var/lib/dendrite";
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in
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{
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options.services.dendrite = {
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enable = lib.mkEnableOption "matrix.org dendrite";
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httpPort = lib.mkOption {
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type = lib.types.nullOr lib.types.port;
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default = 8008;
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description = ''
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The port to listen for HTTP requests on.
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'';
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};
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httpsPort = lib.mkOption {
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type = lib.types.nullOr lib.types.port;
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default = null;
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description = ''
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The port to listen for HTTPS requests on.
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'';
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};
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tlsCert = lib.mkOption {
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type = lib.types.nullOr lib.types.path;
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example = "/var/lib/dendrite/server.cert";
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default = null;
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description = ''
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The path to the TLS certificate.
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<programlisting>
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nix-shell -p dendrite --command "generate-keys --tls-cert server.crt --tls-key server.key"
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</programlisting>
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'';
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};
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tlsKey = lib.mkOption {
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type = lib.types.nullOr lib.types.path;
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example = "/var/lib/dendrite/server.key";
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default = null;
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description = ''
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The path to the TLS key.
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<programlisting>
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nix-shell -p dendrite --command "generate-keys --tls-cert server.crt --tls-key server.key"
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</programlisting>
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'';
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};
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environmentFile = lib.mkOption {
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type = lib.types.nullOr lib.types.path;
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example = "/var/lib/dendrite/registration_secret";
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default = null;
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description = ''
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Environment file as defined in <citerefentry>
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<refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum>
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</citerefentry>.
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Secrets may be passed to the service without adding them to the world-readable
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Nix store, by specifying placeholder variables as the option value in Nix and
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setting these variables accordingly in the environment file. Currently only used
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for the registration secret to allow secure registration when
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client_api.registration_disabled is true.
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<programlisting>
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# snippet of dendrite-related config
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services.dendrite.settings.client_api.registration_shared_secret = "$REGISTRATION_SHARED_SECRET";
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</programlisting>
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<programlisting>
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# content of the environment file
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REGISTRATION_SHARED_SECRET=verysecretpassword
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</programlisting>
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Note that this file needs to be available on the host on which
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<literal>dendrite</literal> is running.
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'';
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};
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loadCredential = lib.mkOption {
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type = lib.types.listOf lib.types.str;
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default = [ ];
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example = [ "private_key:/path/to/my_private_key" ];
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description = ''
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This can be used to pass secrets to the systemd service without adding them to
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the nix store.
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To use the example setting, see the example of
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<option>services.dendrite.settings.global.private_key</option>.
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See the LoadCredential section of systemd.exec manual for more information.
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'';
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};
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settings = lib.mkOption {
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type = lib.types.submodule {
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freeformType = settingsFormat.type;
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options.global = {
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server_name = lib.mkOption {
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type = lib.types.str;
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example = "example.com";
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description = ''
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The domain name of the server, with optional explicit port.
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This is used by remote servers to connect to this server.
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This is also the last part of your UserID.
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'';
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};
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private_key = lib.mkOption {
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type = lib.types.either
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lib.types.path
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(lib.types.strMatching "^\\$CREDENTIALS_DIRECTORY/.+");
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example = "$CREDENTIALS_DIRECTORY/private_key";
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description = ''
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The path to the signing private key file, used to sign
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requests and events.
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<programlisting>
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nix-shell -p dendrite --command "generate-keys --private-key matrix_key.pem"
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</programlisting>
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'';
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};
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trusted_third_party_id_servers = lib.mkOption {
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type = lib.types.listOf lib.types.str;
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example = [ "matrix.org" ];
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default = [ "matrix.org" "vector.im" ];
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description = ''
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Lists of domains that the server will trust as identity
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servers to verify third party identifiers such as phone
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numbers and email addresses
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'';
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};
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};
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options.app_service_api.database = {
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connection_string = lib.mkOption {
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type = lib.types.str;
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default = "file:federationapi.db";
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description = ''
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Database for the Appservice API.
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'';
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};
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};
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options.client_api = {
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registration_disabled = lib.mkOption {
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type = lib.types.bool;
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default = true;
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description = ''
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Whether to disable user registration to the server
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without the shared secret.
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'';
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};
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};
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options.federation_api.database = {
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connection_string = lib.mkOption {
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type = lib.types.str;
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default = "file:federationapi.db";
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description = ''
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Database for the Federation API.
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'';
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};
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};
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options.key_server.database = {
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connection_string = lib.mkOption {
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type = lib.types.str;
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default = "file:keyserver.db";
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description = ''
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Database for the Key Server (for end-to-end encryption).
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'';
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};
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};
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options.media_api = {
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database = {
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connection_string = lib.mkOption {
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type = lib.types.str;
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default = "file:mediaapi.db";
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description = ''
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Database for the Media API.
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'';
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};
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};
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base_path = lib.mkOption {
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type = lib.types.str;
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default = "${workingDir}/media_store";
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description = ''
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Storage path for uploaded media.
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'';
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};
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};
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options.room_server.database = {
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connection_string = lib.mkOption {
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type = lib.types.str;
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default = "file:roomserver.db";
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description = ''
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Database for the Room Server.
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'';
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};
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};
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options.sync_api.database = {
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connection_string = lib.mkOption {
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type = lib.types.str;
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default = "file:syncserver.db";
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description = ''
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Database for the Sync API.
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'';
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};
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};
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options.user_api = {
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account_database = {
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connection_string = lib.mkOption {
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type = lib.types.str;
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default = "file:userapi_accounts.db";
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description = ''
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Database for the User API, accounts.
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'';
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};
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};
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device_database = {
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connection_string = lib.mkOption {
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type = lib.types.str;
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default = "file:userapi_devices.db";
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description = ''
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Database for the User API, devices.
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'';
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};
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};
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};
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options.mscs = {
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database = {
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connection_string = lib.mkOption {
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type = lib.types.str;
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default = "file:mscs.db";
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description = ''
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Database for exerimental MSC's.
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'';
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};
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};
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};
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};
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default = { };
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description = ''
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Configuration for dendrite, see:
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<link xlink:href="https://github.com/matrix-org/dendrite/blob/master/dendrite-config.yaml"/>
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for available options with which to populate settings.
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'';
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};
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openRegistration = lib.mkOption {
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type = lib.types.bool;
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default = false;
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description = ''
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Allow open registration without secondary verification (reCAPTCHA).
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'';
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};
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};
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config = lib.mkIf cfg.enable {
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assertions = [{
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assertion = cfg.httpsPort != null -> (cfg.tlsCert != null && cfg.tlsKey != null);
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message = ''
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If Dendrite is configured to use https, tlsCert and tlsKey must be provided.
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nix-shell -p dendrite --command "generate-keys --tls-cert server.crt --tls-key server.key"
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'';
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}];
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systemd.services.dendrite = {
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description = "Dendrite Matrix homeserver";
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after = [
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"network.target"
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];
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wantedBy = [ "multi-user.target" ];
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serviceConfig = {
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Type = "simple";
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DynamicUser = true;
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StateDirectory = "dendrite";
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WorkingDirectory = workingDir;
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RuntimeDirectory = "dendrite";
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RuntimeDirectoryMode = "0700";
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LimitNOFILE = 65535;
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EnvironmentFile = lib.mkIf (cfg.environmentFile != null) cfg.environmentFile;
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LoadCredential = cfg.loadCredential;
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ExecStartPre = ''
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${pkgs.envsubst}/bin/envsubst \
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-i ${configurationYaml} \
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-o /run/dendrite/dendrite.yaml
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'';
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ExecStart = lib.strings.concatStringsSep " " ([
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"${pkgs.dendrite}/bin/dendrite-monolith-server"
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"--config /run/dendrite/dendrite.yaml"
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] ++ lib.optionals (cfg.httpPort != null) [
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"--http-bind-address :${builtins.toString cfg.httpPort}"
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] ++ lib.optionals (cfg.httpsPort != null) [
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"--https-bind-address :${builtins.toString cfg.httpsPort}"
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"--tls-cert ${cfg.tlsCert}"
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"--tls-key ${cfg.tlsKey}"
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] ++ lib.optionals cfg.openRegistration [
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"--really-enable-open-registration"
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]);
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ExecReload = "${pkgs.coreutils}/bin/kill -HUP $MAINPID";
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Restart = "on-failure";
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};
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};
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};
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meta.maintainers = lib.teams.matrix.members;
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}
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