254 lines
7.9 KiB
Nix
254 lines
7.9 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.joinmarket;
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nbLib = config.nix-bitcoin.lib;
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nbPkgs = config.nix-bitcoin.pkgs;
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secretsDir = config.nix-bitcoin.secretsDir;
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inherit (config.services) bitcoind;
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torAddress = builtins.head (builtins.split ":" config.services.tor.client.socksListenAddress);
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# Based on https://github.com/JoinMarket-Org/joinmarket-clientserver/blob/master/jmclient/jmclient/configure.py
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configFile = builtins.toFile "config" ''
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[DAEMON]
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no_daemon = 0
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daemon_port = 27183
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daemon_host = localhost
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use_ssl = false
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[BLOCKCHAIN]
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blockchain_source = bitcoin-rpc
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network = ${bitcoind.network}
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rpc_host = ${bitcoind.rpc.address}
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rpc_port = ${toString bitcoind.rpc.port}
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rpc_user = ${bitcoind.rpc.users.privileged.name}
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@@RPC_PASSWORD@@
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${optionalString (cfg.rpcWalletFile != null) "rpc_wallet_file=${cfg.rpcWalletFile}"}
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[MESSAGING:server1]
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host = darksci3bfoka7tw.onion
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channel = joinmarket-pit
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port = 6697
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usessl = true
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socks5 = true
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socks5_host = ${torAddress}
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socks5_port = 9050
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[MESSAGING:server2]
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host = ncwkrwxpq2ikcngxq3dy2xctuheniggtqeibvgofixpzvrwpa77tozqd.onion
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channel = joinmarket-pit
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port = 6667
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usessl = false
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socks5 = true
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socks5_host = ${torAddress}
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socks5_port = 9050
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[LOGGING]
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console_log_level = INFO
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color = false
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[POLICY]
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segwit = true
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native = true
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merge_algorithm = default
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tx_fees = 3
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absurd_fee_per_kb = 350000
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tx_broadcast = self
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minimum_makers = 4
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max_sats_freeze_reuse = -1
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taker_utxo_retries = 3
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taker_utxo_age = 5
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taker_utxo_amtpercent = 20
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accept_commitment_broadcasts = 1
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commit_file_location = cmtdata/commitments.json
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[PAYJOIN]
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payjoin_version = 1
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disable_output_substitution = 0
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max_additional_fee_contribution = default
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min_fee_rate = 1.1
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onion_socks5_host = ${torAddress}
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onion_socks5_port = 9050
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tor_control_host = unix:/run/tor/control
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hidden_service_ssl = false
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'';
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# The jm scripts create a 'logs' dir in the working dir,
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# so run them inside dataDir.
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cli = pkgs.runCommand "joinmarket-cli" {} ''
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mkdir -p $out/bin
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jm=${nbPkgs.joinmarket}/bin
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cd $jm
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for bin in jm-*; do
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{
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echo "#!${pkgs.bash}/bin/bash";
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echo "cd '${cfg.dataDir}' && ${cfg.cliExec} sudo -u ${cfg.user} $jm/$bin --datadir='${cfg.dataDir}' \"\$@\"";
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} > $out/bin/$bin
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done
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chmod -R +x $out/bin
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'';
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in {
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options.services.joinmarket = {
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enable = mkEnableOption "JoinMarket";
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yieldgenerator = {
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enable = mkEnableOption "yield generator bot";
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customParameters = mkOption {
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type = types.str;
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default = "";
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example = ''
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txfee = 200
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cjfee_a = 300
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'';
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description = ''
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Python code to define custom yield generator parameters, as described in
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https://github.com/JoinMarket-Org/joinmarket-clientserver/blob/master/docs/YIELDGENERATOR.md
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'';
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};
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};
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dataDir = mkOption {
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type = types.path;
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default = "/var/lib/joinmarket";
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description = "The data directory for JoinMarket.";
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};
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user = mkOption {
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type = types.str;
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default = "joinmarket";
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description = "The user as which to run JoinMarket.";
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};
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group = mkOption {
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type = types.str;
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default = cfg.user;
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description = "The group as which to run JoinMarket.";
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};
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rpcWalletFile = mkOption {
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type = types.nullOr types.str;
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default = null;
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description = ''
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Name of the watch-only bitcoind wallet the JoinMarket addresses are imported to.
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'';
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};
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cli = mkOption {
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default = cli;
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};
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# This option is only used by netns-isolation
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enforceTor = mkOption {
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readOnly = true;
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default = true;
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};
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inherit (nbLib) cliExec;
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};
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config = mkIf cfg.enable (mkMerge [{
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services.bitcoind.enable = true;
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environment.systemPackages = [
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(hiPrio cfg.cli)
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];
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users.users.${cfg.user} = {
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description = "joinmarket User";
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group = "${cfg.group}";
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home = cfg.dataDir;
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extraGroups = [ "tor" ];
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};
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users.groups.${cfg.group} = {};
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nix-bitcoin.operator = {
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groups = [ cfg.group ];
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sudoUsers = [ cfg.group ];
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};
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systemd.tmpfiles.rules = [
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"d '${cfg.dataDir}' 0770 ${cfg.user} ${cfg.group} - -"
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];
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services.bitcoind.disablewallet = false;
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# Joinmarket is TOR-only
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services.tor = {
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enable = true;
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client.enable = true;
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controlSocket.enable = true;
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};
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systemd.services.joinmarket = {
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description = "JoinMarket Daemon";
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wantedBy = [ "multi-user.target" ];
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requires = [ "bitcoind.service" ];
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after = [ "bitcoind.service" ];
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path = [ pkgs.sudo ];
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serviceConfig = nbLib.defaultHardening // {
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ExecStartPre = nbLib.privileged ''
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install -o '${cfg.user}' -g '${cfg.group}' -m 640 ${configFile} ${cfg.dataDir}/joinmarket.cfg
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sed -i \
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"s|@@RPC_PASSWORD@@|rpc_password = $(cat ${secretsDir}/bitcoin-rpcpassword-privileged)|" \
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'${cfg.dataDir}/joinmarket.cfg'
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'';
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# Generating wallets (jmclient/wallet.py) is only supported for mainnet or testnet
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ExecStartPost = mkIf (bitcoind.network == "mainnet") (nbLib.privileged ''
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walletname=wallet.jmdat
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pw=$(cat "${secretsDir}"/jm-wallet-password)
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mnemonic=${secretsDir}/jm-wallet-seed
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if [[ ! -f ${cfg.dataDir}/wallets/$walletname ]]; then
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echo Create joinmarket wallet
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# Use bash variables so commands don't proceed on previous failures
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# (like with pipes)
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cd ${cfg.dataDir} && \
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out=$(sudo -u ${cfg.user} \
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${nbPkgs.joinmarket}/bin/jm-genwallet \
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--datadir=${cfg.dataDir} $walletname $pw)
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recoveryseed=$(echo "$out" | grep 'recovery_seed')
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echo "$recoveryseed" | cut -d ':' -f2 > $mnemonic
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fi
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'');
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ExecStart = "${nbPkgs.joinmarket}/bin/joinmarketd";
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WorkingDirectory = "${cfg.dataDir}"; # The service creates 'commitmentlist' in the working dir
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User = "${cfg.user}";
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Restart = "on-failure";
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RestartSec = "10s";
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ReadWritePaths = "${cfg.dataDir}";
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} // nbLib.allowTor;
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};
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nix-bitcoin.secrets.jm-wallet-password.user = cfg.user;
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}
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(mkIf cfg.yieldgenerator.enable {
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systemd.services.joinmarket-yieldgenerator = let
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ygDefault = "${nbPkgs.joinmarket}/bin/jm-yg-privacyenhanced";
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ygBinary = if cfg.yieldgenerator.customParameters == "" then
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ygDefault
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else
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pkgs.runCommand "jm-yieldgenerator-custom" {
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inherit (cfg.yieldgenerator) customParameters;
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} ''
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substitute ${ygDefault} $out \
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--replace "# end of settings customization" "$customParameters"
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chmod +x $out
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'';
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in {
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description = "CoinJoin maker bot to gain privacy and passively generate income";
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wantedBy = [ "joinmarket.service" ];
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requires = [ "joinmarket.service" ];
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after = [ "joinmarket.service" ];
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preStart = let
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start = ''
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exec ${ygBinary} --datadir='${cfg.dataDir}' --wallet-password-stdin wallet.jmdat
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'';
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in ''
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pw=$(cat "${secretsDir}"/jm-wallet-password)
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echo "echo -n $pw | ${start}" > $RUNTIME_DIRECTORY/start
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'';
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serviceConfig = nbLib.defaultHardening // rec {
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RuntimeDirectory = "joinmarket-yieldgenerator"; # Only used to create start script
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RuntimeDirectoryMode = "700";
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WorkingDirectory = "${cfg.dataDir}"; # The service creates dir 'logs' in the working dir
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ExecStart = "${pkgs.bash}/bin/bash /run/${RuntimeDirectory}/start";
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User = "${cfg.user}";
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ReadWritePaths = "${cfg.dataDir}";
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} // nbLib.allowTor;
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};
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})
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]);
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}
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