246 lines
7.7 KiB
Nix
246 lines
7.7 KiB
Nix
{
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pkgs,
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config,
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lib,
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flake-inputs,
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...
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}: let
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inherit (lib.strings) concatMapStringsSep;
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cfg = config.services.matrix-conduit;
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domain = "matrix.${config.services.nginx.domain}";
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turn-realm = "turn.${config.services.nginx.domain}";
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in {
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services.matrix-conduit = {
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enable = true;
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package = flake-inputs.nixpkgs-unstable.legacyPackages.${pkgs.system}.matrix-conduit;
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settings.global = {
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address = "127.0.0.1";
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server_name = domain;
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database_backend = "rocksdb";
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turn_uris = let
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address = "${config.services.coturn.realm}:${toString config.services.coturn.listening-port}";
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tls-address = "${config.services.coturn.realm}:${toString config.services.coturn.tls-listening-port}";
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in [
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"turn:${address}?transport=udp"
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"turn:${address}?transport=tcp"
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"turns:${tls-address}?transport=udp"
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"turns:${tls-address}?transport=tcp"
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];
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};
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};
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systemd.services.heisenbridge = let
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replaceSecretBin = "${pkgs.replace-secret}/bin/replace-secret";
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registrationFile = builtins.toFile "heisenbridge-registration.yaml" (builtins.toJSON {
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id = "heisenbridge";
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url = "http://127.0.0.1:9898";
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as_token = "@AS_TOKEN@";
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hs_token = "@HS_TOKEN@";
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rate_limited = false;
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sender_localpart = "heisenbridge";
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namespaces = {
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users = [
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{
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regex = "@irc_.*";
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exclusive = true;
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}
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{
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regex = "@heisenbridge:.*";
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exclusive = true;
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}
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];
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aliases = [];
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rooms = [];
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};
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});
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# TODO(tlater): Starting with systemd 253 it will become possible
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# to do the credential setup as part of ExecStartPre/preStart
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# instead.
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#
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# This will also make it possible to actually set caps on the
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# heisenbridge process using systemd, so that we can run the
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# identd process.
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execScript = pkgs.writeShellScript "heisenbridge" ''
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cp ${registrationFile} "$RUNTIME_DIRECTORY/heisenbridge-registration.yaml"
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chmod 600 $RUNTIME_DIRECTORY/heisenbridge-registration.yaml
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${replaceSecretBin} '@AS_TOKEN@' "$CREDENTIALS_DIRECTORY/heisenbridge_as-token" "$RUNTIME_DIRECTORY/heisenbridge-registration.yaml"
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${replaceSecretBin} '@HS_TOKEN@' "$CREDENTIALS_DIRECTORY/heisenbridge_hs-token" "$RUNTIME_DIRECTORY/heisenbridge-registration.yaml"
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chmod 400 $RUNTIME_DIRECTORY/heisenbridge-registration.yaml
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${pkgs.heisenbridge}/bin/heisenbridge \
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--config $RUNTIME_DIRECTORY/heisenbridge-registration.yaml \
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--owner @tlater:matrix.tlater.net \
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'http://localhost:${toString cfg.settings.global.port}'
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'';
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in {
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description = "Matrix<->IRC bridge";
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wantedBy = ["multi-user.target"];
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after = ["conduit.service"];
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serviceConfig = {
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Type = "simple";
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LoadCredential = "heisenbridge:/run/secrets/heisenbridge";
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ExecStart = execScript;
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DynamicUser = true;
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RuntimeDirectory = "heisenbridge";
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RuntimeDirectoryMode = "0700";
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RestrictNamespaces = true;
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PrivateUsers = true;
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ProtectHostname = true;
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ProtectClock = true;
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ProtectKernelTunables = true;
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ProtectKernelModules = true;
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ProtectKernelLogs = true;
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ProtectControlGroups = true;
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RestrictAddressFamilies = ["AF_INET AF_INET6"];
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LockPersonality = true;
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RestrictRealtime = true;
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ProtectProc = "invisible";
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ProcSubset = "pid";
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UMask = 0077;
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# For the identd port
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# CapabilityBoundingSet = ["CAP_NET_BIND_SERVICE"];
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# AmbientCapabilities = ["CAP_NET_BIND_SERVICE"];
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};
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};
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# Pass in the TURN secret via EnvironmentFile, not supported by
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# upstream module currently.
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#
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# See also https://gitlab.com/famedly/conduit/-/issues/314
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systemd.services.conduit.serviceConfig.EnvironmentFile = config.sops.secrets."turn/env".path;
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services.coturn = {
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enable = true;
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no-cli = true;
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use-auth-secret = true;
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static-auth-secret-file = config.sops.secrets."turn/secret".path;
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realm = turn-realm;
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relay-ips = [
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"178.79.137.55"
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];
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# SSL config
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#
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# TODO(tlater): Switch to letsencrypt once google fix:
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# https://github.com/vector-im/element-android/issues/1533
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pkey = config.sops.secrets."turn/ssl-key".path;
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cert = config.sops.secrets."turn/ssl-cert".path;
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# Based on suggestions from
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# https://github.com/matrix-org/synapse/blob/develop/docs/turn-howto.md
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# and
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# https://www.foxypossibilities.com/2018/05/19/setting-up-a-turn-sever-for-matrix-on-nixos/
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no-tcp-relay = true;
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secure-stun = true;
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extraConfig = ''
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# Deny various local IP ranges, see
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# https://www.rtcsec.com/article/cve-2020-26262-bypass-of-coturns-access-control-protection/
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no-multicast-peers
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denied-peer-ip=0.0.0.0-0.255.255.255
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denied-peer-ip=10.0.0.0-10.255.255.255
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denied-peer-ip=100.64.0.0-100.127.255.255
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denied-peer-ip=127.0.0.0-127.255.255.255
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denied-peer-ip=169.254.0.0-169.254.255.255
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denied-peer-ip=172.16.0.0-172.31.255.255
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denied-peer-ip=192.0.0.0-192.0.0.255
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denied-peer-ip=192.0.2.0-192.0.2.255
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denied-peer-ip=192.88.99.0-192.88.99.255
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denied-peer-ip=192.168.0.0-192.168.255.255
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denied-peer-ip=198.18.0.0-198.19.255.255
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denied-peer-ip=198.51.100.0-198.51.100.255
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denied-peer-ip=203.0.113.0-203.0.113.255
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denied-peer-ip=240.0.0.0-255.255.255.255 denied-peer-ip=::1
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denied-peer-ip=64:ff9b::-64:ff9b::ffff:ffff
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denied-peer-ip=::ffff:0.0.0.0-::ffff:255.255.255.255
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denied-peer-ip=100::-100::ffff:ffff:ffff:ffff
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denied-peer-ip=2001::-2001:1ff:ffff:ffff:ffff:ffff:ffff:ffff
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denied-peer-ip=2002::-2002:ffff:ffff:ffff:ffff:ffff:ffff:ffff
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denied-peer-ip=fc00::-fdff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
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denied-peer-ip=fe80::-febf:ffff:ffff:ffff:ffff:ffff:ffff:ffff
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# *Allow* any IP addresses that we explicitly set as relay IPs
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${concatMapStringsSep "\n" (ip: "allowed-peer-ip=${ip}") config.services.coturn.relay-ips}
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# Various other security settings
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no-tlsv1
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no-tlsv1_1
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'';
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};
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services.nginx.virtualHosts."${domain}" = {
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enableACME = true;
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listen = [
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{
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addr = "0.0.0.0";
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port = 443;
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ssl = true;
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}
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{
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addr = "[::0]";
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port = 443;
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ssl = true;
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}
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{
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addr = "0.0.0.0";
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port = 8448;
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ssl = true;
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}
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{
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addr = "[::0]";
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port = 8488;
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ssl = true;
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}
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];
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addSSL = true;
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extraConfig = ''
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merge_slashes off;
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access_log /var/log/nginx/${domain}/access.log upstream_time;
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'';
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locations = {
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"/_matrix" = {
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proxyPass = "http://${cfg.settings.global.address}:${toString cfg.settings.global.port}";
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# Recommended by conduit
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extraConfig = ''
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proxy_buffering off;
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'';
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};
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# Add Element X support
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# TODO(tlater): Remove when no longer required: https://github.com/vector-im/element-x-android/issues/1085
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"=/.well-known/matrix/client" = {
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alias = pkgs.writeText "well-known-matrix-client" (builtins.toJSON {
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"m.homeserver".base_url = "https://${domain}";
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"org.matrix.msc3575.proxy".url = "https://${domain}";
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});
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extraConfig = ''
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default_type application/json;
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add_header Access-Control-Allow-Origin "*";
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'';
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};
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};
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};
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services.backups.conduit = {
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user = "root";
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paths = [
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"/var/lib/private/matrix-conduit/"
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];
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# Other services store their data in conduit, so no other services
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# need to be shut down currently.
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pauseServices = ["conduit.service"];
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};
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}
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