nix-bitcoin/modules/spark-wallet.nix

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{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.spark-wallet;
inherit (config) nix-bitcoin-services;
onion-chef-service = (if cfg.onion-service then [ "onion-chef.service" ] else []);
run-spark-wallet = pkgs.writeScript "run-spark-wallet" ''
CMD="${pkgs.nix-bitcoin.spark-wallet}/bin/spark-wallet --ln-path ${cfg.ln-path} --host ${cfg.host} -Q -k -c ${config.nix-bitcoin.secretsDir}/spark-wallet-login ${cfg.extraArgs}"
${optionalString cfg.onion-service
''
echo Getting onion hostname
CMD="$CMD --public-url http://$(cat /var/lib/onion-chef/spark-wallet/spark-wallet)"
''
}
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# Use rate provide wasabi because default (bitstamp) doesn't accept
# connections through Tor and add proxy for rate lookup.
CMD="$CMD --rate-provider wasabi --proxy socks5h://${config.services.tor.client.socksListenAddress}"
echo Running $CMD
$CMD
'';
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in {
options.services.spark-wallet = {
enable = mkOption {
type = types.bool;
default = false;
description = ''
If enabled, the spark-wallet service will be installed.
'';
};
host = mkOption {
type = types.str;
default = "localhost";
description = "http(s) server listen address.";
};
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ln-path = mkOption {
type = types.path;
default = "${config.services.clightning.dataDir}/bitcoin";
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description = ''
"The path of the clightning network data directory.";
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'';
};
onion-service = mkOption {
type = types.bool;
default = false;
description = ''
"If enabled, configures spark-wallet to be reachable through an onion service.";
'';
};
extraArgs = mkOption {
type = types.separatedString " ";
default = "";
description = "Extra command line arguments passed to spark-wallet.";
};
enforceTor = nix-bitcoin-services.enforceTor;
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};
config = mkIf cfg.enable {
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assertions = [
{ assertion = config.services.clightning.enable;
message = "spark-wallet requires clightning.";
}
];
environment.systemPackages = [ pkgs.nix-bitcoin.spark-wallet ];
users.users.spark-wallet = {
description = "spark-wallet User";
group = "spark-wallet";
extraGroups = [ "clightning" ];
};
users.groups.spark-wallet = {};
services.tor.hiddenServices.spark-wallet = mkIf cfg.onion-service {
map = [{
port = 80; toPort = 9737; toHost = cfg.host;
}];
version = 3;
};
services.onion-chef.enable = cfg.onion-service;
services.onion-chef.access.spark-wallet = if cfg.onion-service then [ "spark-wallet" ] else [];
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systemd.services.spark-wallet = {
description = "Run spark-wallet";
wantedBy = [ "multi-user.target" ];
requires = [ "clightning.service" ] ++ onion-chef-service;
after = [ "clightning.service" ] ++ onion-chef-service;
serviceConfig = nix-bitcoin-services.defaultHardening // {
ExecStart = "${pkgs.bash}/bin/bash ${run-spark-wallet}";
User = "spark-wallet";
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Restart = "on-failure";
RestartSec = "10s";
ReadWritePaths = mkIf cfg.onion-service "/var/lib/onion-chef";
} // (if cfg.enforceTor
then nix-bitcoin-services.allowTor
else nix-bitcoin-services.allowAnyIP)
// nix-bitcoin-services.nodejs;
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};
nix-bitcoin.secrets.spark-wallet-login.user = "spark-wallet";
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};
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}