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|
{ config, lib, pkgs, ... }: with lib;
let
cfg = config.services.dnscrypt-proxy2;
in
{
options.services.dnscrypt-proxy2 = {
enable = mkEnableOption "dnscrypt-proxy2";
settings = mkOption {
description = ''
Attrset that is converted and passed as TOML config file.
For available params, see: <link xlink:href="https://github.com/DNSCrypt/dnscrypt-proxy/blob/${pkgs.dnscrypt-proxy2.version}/dnscrypt-proxy/example-dnscrypt-proxy.toml"/>
'';
example = literalExample ''
{
sources.public-resolvers = {
urls = [ "https://download.dnscrypt.info/resolvers-list/v2/public-resolvers.md" ];
cache_file = "public-resolvers.md";
minisign_key = "RWQf6LRCGA9i53mlYecO4IzT51TGPpvWucNSCh1CBM0QTaLn73Y7GFO3";
refresh_delay = 72;
};
}
'';
type = types.attrs;
default = {};
};
upstreamDefaults = mkOption {
description = ''
Whether to base the config declared in <literal>services.dnscrypt-proxy2.settings</literal> on the upstream example config (<link xlink:href="https://github.com/DNSCrypt/dnscrypt-proxy/blob/master/dnscrypt-proxy/example-dnscrypt-proxy.toml"/>)
Disable this if you want to declare your dnscrypt config from scratch.
'';
type = types.bool;
default = true;
};
configFile = mkOption {
description = ''
Path to TOML config file. See: <link xlink:href="https://github.com/DNSCrypt/dnscrypt-proxy/blob/master/dnscrypt-proxy/example-dnscrypt-proxy.toml"/>
If this option is set, it will override any configuration done in options.services.dnscrypt-proxy2.settings.
'';
example = "/etc/dnscrypt-proxy/dnscrypt-proxy.toml";
type = types.path;
default = pkgs.runCommand "dnscrypt-proxy.toml" {
json = builtins.toJSON cfg.settings;
passAsFile = [ "json" ];
} ''
${if cfg.upstreamDefaults then ''
${pkgs.remarshal}/bin/toml2json ${pkgs.dnscrypt-proxy2.src}/dnscrypt-proxy/example-dnscrypt-proxy.toml > example.json
${pkgs.jq}/bin/jq --slurp add example.json $jsonPath > config.json # merges the two
'' else ''
cp $jsonPath config.json
''}
${pkgs.remarshal}/bin/json2toml < config.json > $out
'';
defaultText = literalExample "TOML file generated from services.dnscrypt-proxy2.settings";
};
};
config = mkIf cfg.enable {
networking.nameservers = lib.mkDefault [ "127.0.0.1" ];
systemd.services.dnscrypt-proxy2 = {
description = "DNSCrypt-proxy client";
wants = [
"network-online.target"
"nss-lookup.target"
];
before = [
"nss-lookup.target"
];
wantedBy = [
"multi-user.target"
];
serviceConfig = {
AmbientCapabilities = "CAP_NET_BIND_SERVICE";
CacheDirectory = "dnscrypt-proxy";
DynamicUser = true;
ExecStart = "${pkgs.dnscrypt-proxy2}/bin/dnscrypt-proxy -config ${cfg.configFile}";
LockPersonality = true;
LogsDirectory = "dnscrypt-proxy";
MemoryDenyWriteExecute = true;
NoNewPrivileges = true;
NonBlocking = true;
PrivateDevices = true;
ProtectClock = true;
ProtectControlGroups = true;
ProtectHome = true;
ProtectHostname = true;
ProtectKernelLogs = true;
ProtectKernelModules = true;
ProtectKernelTunables = true;
ProtectSystem = "strict";
Restart = "always";
RestrictAddressFamilies = [
"AF_INET"
"AF_INET6"
];
RestrictNamespaces = true;
RestrictRealtime = true;
RuntimeDirectory = "dnscrypt-proxy";
StateDirectory = "dnscrypt-proxy";
SystemCallArchitectures = "native";
SystemCallFilter = [
"@system-service"
"@chown"
"~@aio"
"~@keyring"
"~@memlock"
"~@resources"
"~@setuid"
"~@timer"
];
};
};
};
}
|
