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|
{ config, lib, pkgs, ... }:
let
inherit (lib)
concatMapStringsSep concatStrings filterAttrs foldAttrs mapAttrs'
mapAttrsToList mkOption optionalString ;
inherit (lib.types)
attrsOf submodule ;
explicit = filterAttrs (n: v: n != "_module" && v != null);
instances = explicit config.nixsap.apps.gnupg;
keyrings =
let
ik = mapAttrsToList (_: i: {
"${i.user}" = i.secretKeys ++ mapAttrsToList (_: f: f) i.passphrase;
}) instances;
in foldAttrs (l: r: l ++ r) [] ik;
mkService = name: cfg:
let
pubring = pkgs.runCommand "gnupg-${name}-pubring.kbx" {} ''
${cfg.package}/bin/gpg2 \
--homedir . \
--import \
${concatMapStringsSep " " (k: "'${k}'") cfg.publicKeys}
cp pubring.kbx $out
'';
start = pkgs.writeBashScriptBin "gnupg-${name}" ''
set -euo pipefail
umask 0077
cat <<'CONF' > '${cfg.home}/gpg.conf'
batch
no-tty
trust-model always
yes
CONF
# XXX forking.
# XXX is 30 years enough?
${cfg.package}/bin/gpg-agent \
--homedir '${cfg.home}' \
--allow-preset-passphrase \
--batch \
--max-cache-ttl 999999999 \
--quiet \
--daemon
${optionalString (cfg.publicKeys != []) ''
ln -sf '${pubring}' '${cfg.home}/pubring.kbx'
''}
export GNUPGHOME='${cfg.home}'
${optionalString (cfg.secretKeys != []) ''
${cfg.package}/bin/gpg2 --import \
${concatMapStringsSep " " (k: "'${k}'") cfg.secretKeys}
''}
${concatStrings (mapAttrsToList (cacheid: f: ''
head -n 1 '${f}' \
| ${cfg.package}/libexec/gpg-preset-passphrase \
--verbose --preset '${cacheid}'
'') cfg.passphrase)
}
'';
in {
name = "gnupg-${name}";
value = {
description = "gnupg (${name})";
wantedBy = [ "multi-user.target" ];
after = [ "keys.target" "local-fs.target" ];
preStart = ''
mkdir -p -- '${cfg.home}'
rm -rf -- '${cfg.home}/'*
chmod u=rwX,g=,o= -- '${cfg.home}'
chown '${cfg.user}.${cfg.user}' -- '${cfg.home}'
'';
serviceConfig = {
ExecStart = "${start}/bin/gnupg-${name}";
PermissionsStartOnly = true;
Restart = "always";
Type = "forking";
User = cfg.user;
};
};
};
in {
options = {
nixsap.apps.gnupg = mkOption {
description = "GnuPG instances";
default = {};
type = attrsOf (submodule (import ./instance.nix pkgs));
};
};
config = {
nixsap.deployment.keyrings = keyrings;
systemd.services = mapAttrs' mkService instances;
};
}
|
