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https://github.com/fort-nix/nix-bitcoin.git
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Since PostgreSQL 15, DB users need to be DB owners to be able to create tables. We can't use the new `ensureDBOwnerhip` NixOS option [1] to set this up, because it requires the PostgreSQL user name and the database name to be identical, which is not the case for btcpayserver. Instead, we manually issue a PostgreSQL admin statement similar to the one used by `ensureDBOwnerhip`. This method of setting up the user is also compatible with older PostgreSQL versions that come with older NixOS `system.stateVersion`s. [1] https://github.com/NixOS/nixpkgs/pull/266270
280 lines
11 KiB
Nix
280 lines
11 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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options.services = {
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btcpayserver = {
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enable = mkEnableOption "btcpayserver, a self-hosted Bitcoin payment processor";
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address = mkOption {
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type = types.str;
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default = "127.0.0.1";
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description = mdDoc "Address to listen on.";
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};
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port = mkOption {
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type = types.port;
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default = 23000;
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description = mdDoc "Port to listen on.";
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};
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package = mkOption {
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type = types.package;
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default = if cfg.btcpayserver.lbtc then
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config.nix-bitcoin.pkgs.btcpayserver.override { altcoinSupport = true; }
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else
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config.nix-bitcoin.pkgs.btcpayserver;
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defaultText = "(See source)";
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description = mdDoc "The package providing btcpayserver binaries.";
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};
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dataDir = mkOption {
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type = types.path;
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default = "/var/lib/btcpayserver";
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description = mdDoc "The data directory for btcpayserver.";
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};
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lightningBackend = mkOption {
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type = types.nullOr (types.enum [ "clightning" "lnd" ]);
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default = null;
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description = mdDoc "The lightning node implementation to use.";
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};
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lbtc = mkOption {
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type = types.bool;
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default = false;
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description = mdDoc "Enable liquid support in btcpayserver.";
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};
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rootpath = mkOption {
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type = types.nullOr types.str;
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default = null;
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example = "btcpayserver";
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description = mdDoc "The prefix for root-relative btcpayserver URLs.";
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};
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user = mkOption {
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type = types.str;
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default = "btcpayserver";
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description = mdDoc "The user as which to run btcpayserver.";
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};
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group = mkOption {
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type = types.str;
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default = cfg.btcpayserver.user;
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description = mdDoc "The group as which to run btcpayserver.";
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};
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tor.enforce = nbLib.tor.enforce;
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};
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nbxplorer = {
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enable = mkOption {
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# This option is only used by netns-isolation
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internal = true;
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default = cfg.btcpayserver.enable;
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description = mdDoc ''
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nbxplorer is always enabled when btcpayserver is enabled.
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'';
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};
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package = mkOption {
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type = types.package;
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default = config.nix-bitcoin.pkgs.nbxplorer;
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defaultText = "config.nix-bitcoin.pkgs.nbxplorer";
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description = mdDoc "The package providing nbxplorer binaries.";
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};
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address = mkOption {
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type = types.str;
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default = "127.0.0.1";
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description = mdDoc "Address to listen on.";
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};
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port = mkOption {
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type = types.port;
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default = 24444;
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description = mdDoc "Port to listen on.";
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};
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dataDir = mkOption {
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type = types.path;
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default = "/var/lib/nbxplorer";
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description = mdDoc "The data directory for nbxplorer.";
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};
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user = mkOption {
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type = types.str;
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default = "nbxplorer";
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description = mdDoc "The user as which to run nbxplorer.";
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};
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group = mkOption {
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type = types.str;
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default = cfg.nbxplorer.user;
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description = mdDoc "The group as which to run nbxplorer.";
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};
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tor.enforce = nbLib.tor.enforce;
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};
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};
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cfg = config.services;
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nbLib = config.nix-bitcoin.lib;
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inherit (config.services) bitcoind liquidd;
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in {
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inherit options;
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config = mkIf cfg.btcpayserver.enable {
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services.bitcoind = {
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enable = true;
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rpc.users.btcpayserver = {
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passwordHMACFromFile = true;
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rpcwhitelist = cfg.bitcoind.rpc.users.public.rpcwhitelist ++ [
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"setban"
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"generatetoaddress"
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"getpeerinfo"
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];
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};
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listenWhitelisted = true;
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};
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services.clightning.enable = mkIf (cfg.btcpayserver.lightningBackend == "clightning") true;
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services.lnd = mkIf (cfg.btcpayserver.lightningBackend == "lnd") {
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enable = true;
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macaroons.btcpayserver = {
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inherit (cfg.btcpayserver) user;
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permissions = ''{"entity":"info","action":"read"},{"entity":"onchain","action":"read"},{"entity":"offchain","action":"read"},{"entity":"address","action":"read"},{"entity":"message","action":"read"},{"entity":"peers","action":"read"},{"entity":"signer","action":"read"},{"entity":"invoices","action":"read"},{"entity":"invoices","action":"write"},{"entity":"address","action":"write"}'';
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};
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};
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services.liquidd = mkIf cfg.btcpayserver.lbtc {
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enable = true;
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listenWhitelisted = true;
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};
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services.postgresql = {
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enable = true;
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ensureDatabases = [ "btcpaydb" "nbxplorer" ];
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ensureUsers = [
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{ name = cfg.btcpayserver.user; }
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{ name = cfg.nbxplorer.user; }
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];
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};
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systemd.services.postgresql.postStart = lib.mkAfter ''
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$PSQL -tAc '
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ALTER DATABASE "btcpaydb" OWNER TO "${cfg.btcpayserver.user}";
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ALTER DATABASE "nbxplorer" OWNER TO "${cfg.nbxplorer.user}";
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'
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'';
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systemd.tmpfiles.rules = [
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"d '${cfg.nbxplorer.dataDir}' 0770 ${cfg.nbxplorer.user} ${cfg.nbxplorer.group} - -"
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"d '${cfg.btcpayserver.dataDir}' 0770 ${cfg.btcpayserver.user} ${cfg.btcpayserver.group} - -"
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];
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systemd.services.nbxplorer = let
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configFile = builtins.toFile "config" ''
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network=${bitcoind.network}
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btcrpcuser=${cfg.bitcoind.rpc.users.btcpayserver.name}
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btcrpcurl=http://${nbLib.addressWithPort bitcoind.rpc.address cfg.bitcoind.rpc.port}
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btcnodeendpoint=${nbLib.addressWithPort bitcoind.address bitcoind.whitelistedPort}
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bind=${cfg.nbxplorer.address}
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port=${toString cfg.nbxplorer.port}
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${optionalString cfg.btcpayserver.lbtc ''
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chains=btc,lbtc
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lbtcrpcuser=${liquidd.rpcuser}
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lbtcrpcurl=http://${nbLib.addressWithPort liquidd.rpc.address liquidd.rpc.port}
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lbtcnodeendpoint=${nbLib.addressWithPort liquidd.address liquidd.whitelistedPort}
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''}
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postgres=User ID=${cfg.nbxplorer.user};Host=/run/postgresql;Database=nbxplorer
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automigrate=1
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'';
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in rec {
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wantedBy = [ "multi-user.target" ];
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requires = [ "bitcoind.service" "postgresql.service" ] ++ optional cfg.btcpayserver.lbtc "liquidd.service";
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after = requires ++ [ "nix-bitcoin-secrets.target" ];
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preStart = ''
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install -m 600 ${configFile} '${cfg.nbxplorer.dataDir}/settings.config'
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{
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echo "btcrpcpassword=$(cat ${config.nix-bitcoin.secretsDir}/bitcoin-rpcpassword-btcpayserver)"
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${optionalString cfg.btcpayserver.lbtc ''
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echo "lbtcrpcpassword=$(cat ${config.nix-bitcoin.secretsDir}/liquid-rpcpassword)"
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''}
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} >> '${cfg.nbxplorer.dataDir}/settings.config'
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'';
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serviceConfig = nbLib.defaultHardening // {
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ExecStart = ''
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${cfg.nbxplorer.package}/bin/nbxplorer --conf=${cfg.nbxplorer.dataDir}/settings.config \
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--datadir=${cfg.nbxplorer.dataDir}
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'';
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User = cfg.nbxplorer.user;
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Restart = "on-failure";
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RestartSec = "10s";
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ReadWritePaths = [ cfg.nbxplorer.dataDir ];
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MemoryDenyWriteExecute = false;
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} // nbLib.allowedIPAddresses cfg.nbxplorer.tor.enforce;
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};
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systemd.services.btcpayserver = let
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nbExplorerUrl = "http://${nbLib.addressWithPort cfg.nbxplorer.address cfg.nbxplorer.port}/";
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nbExplorerCookie = "${cfg.nbxplorer.dataDir}/${bitcoind.makeNetworkName "Main" "RegTest"}/.cookie";
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configFile = builtins.toFile "btcpayserver-config" (''
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network=${bitcoind.network}
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bind=${cfg.btcpayserver.address}
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port=${toString cfg.btcpayserver.port}
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socksendpoint=${config.nix-bitcoin.torClientAddressWithPort}
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btcexplorerurl=${nbExplorerUrl}
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btcexplorercookiefile=${nbExplorerCookie}
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postgres=User ID=${cfg.btcpayserver.user};Host=/run/postgresql;Database=btcpaydb
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'' + optionalString (cfg.btcpayserver.rootpath != null) ''
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rootpath=${cfg.btcpayserver.rootpath}
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'' + optionalString (cfg.btcpayserver.lightningBackend == "clightning") ''
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btclightning=type=clightning;server=unix:///${cfg.clightning.dataDir}/${bitcoind.makeNetworkName "bitcoin" "regtest"}/lightning-rpc
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'' + optionalString (cfg.btcpayserver.lightningBackend == "lnd")
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(
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"btclightning=type=lnd-rest;" +
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"server=https://${cfg.lnd.restAddress}:${toString cfg.lnd.restPort}/;" +
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"macaroonfilepath=/run/lnd/btcpayserver.macaroon;" +
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"certfilepath=${config.services.lnd.certPath}" +
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"\n"
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)
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+ optionalString cfg.btcpayserver.lbtc ''
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chains=btc,lbtc
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lbtcexplorerurl=${nbExplorerUrl}
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lbtcexplorercookiefile=${nbExplorerCookie}
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'');
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in let self = {
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wantedBy = [ "multi-user.target" ];
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requires = [ "nbxplorer.service" "postgresql.service" ]
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++ optional (cfg.btcpayserver.lightningBackend != null) "${cfg.btcpayserver.lightningBackend}.service";
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after = self.requires;
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serviceConfig = nbLib.defaultHardening // {
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ExecStart = ''
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${cfg.btcpayserver.package}/bin/btcpayserver --conf=${configFile} \
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--datadir='${cfg.btcpayserver.dataDir}'
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'';
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User = cfg.btcpayserver.user;
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# Also restart after the program has exited successfully.
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# This is required to support restarting from the web interface after
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# interactive plugin installation.
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# Restart rate limiting is implemented via the `startLimit*` options below.
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Restart = "always";
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ReadWritePaths = [ cfg.btcpayserver.dataDir ];
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MemoryDenyWriteExecute = false;
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} // nbLib.allowedIPAddresses cfg.btcpayserver.tor.enforce;
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startLimitIntervalSec = 30;
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startLimitBurst = 10;
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}; in self;
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users.users.${cfg.nbxplorer.user} = {
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isSystemUser = true;
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group = cfg.nbxplorer.group;
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extraGroups = [ "bitcoinrpc-public" ]
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++ optional cfg.btcpayserver.lbtc liquidd.group;
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home = cfg.nbxplorer.dataDir;
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};
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users.groups.${cfg.nbxplorer.group} = {};
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users.users.${cfg.btcpayserver.user} = {
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isSystemUser = true;
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group = cfg.btcpayserver.group;
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extraGroups = [ cfg.nbxplorer.group ]
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++ optional (cfg.btcpayserver.lightningBackend == "clightning") cfg.clightning.user;
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home = cfg.btcpayserver.dataDir;
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};
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users.groups.${cfg.btcpayserver.group} = {};
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nix-bitcoin.secrets = {
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bitcoin-rpcpassword-btcpayserver = {
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user = cfg.bitcoind.user;
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group = cfg.nbxplorer.group;
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};
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bitcoin-HMAC-btcpayserver.user = cfg.bitcoind.user;
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};
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nix-bitcoin.generateSecretsCmds.btcpayserver = ''
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makeBitcoinRPCPassword btcpayserver
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'';
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};
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}
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