nixpkgs/nixos/modules/services/security/sks.nix
Michael Weiss 6852c080d8
nixos/sks: Fix another regression from ab5dcc7068b
The two directories KDB and PTree do not exist before the SKS DB is
build for the first time. If /var/db/sks is empty and the module is
enabled via "services.sks.enable = true;" the following error will
occur:
...-unit-script-sks-db-pre-start[xxx]:
ln: failed to create symbolic link 'KDB/DB_CONFIG': No such file or directory

To avoid this both links have to be created after the DB is build.
Note: Creating the directories manually might be better but the initial
build might be skipped as a result:
unit-script-sks-db-pre-start[xxxxx]: KeyDB directory already exists.  Exiting.
unit-script-sks-db-pre-start[xxxxx]: PTree directory already exists.  Exiting.
2019-04-28 14:45:21 +02:00

147 lines
4.8 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.sks;
sksPkg = cfg.package;
dbConfig = pkgs.writeText "DB_CONFIG" ''
${cfg.extraDbConfig}
'';
in {
meta.maintainers = with maintainers; [ primeos calbrecht jcumming ];
options = {
services.sks = {
enable = mkEnableOption ''
SKS (synchronizing key server for OpenPGP) and start the database
server. You need to create "''${dataDir}/dump/*.gpg" for the initial
import'';
package = mkOption {
default = pkgs.sks;
defaultText = "pkgs.sks";
type = types.package;
description = "Which SKS derivation to use.";
};
dataDir = mkOption {
type = types.path;
default = "/var/db/sks";
example = "/var/lib/sks";
# TODO: The default might change to "/var/lib/sks" as this is more
# common. There's also https://github.com/NixOS/nixpkgs/issues/26256
# and "/var/db" is not FHS compliant (seems to come from BSD).
description = ''
Data directory (-basedir) for SKS, where the database and all
configuration files are located (e.g. KDB, PTree, membership and
sksconf).
'';
};
extraDbConfig = mkOption {
type = types.str;
default = "";
description = ''
Set contents of the files "KDB/DB_CONFIG" and "PTree/DB_CONFIG" within
the ''${dataDir} directory. This is used to configure options for the
database for the sks key server.
Documentation of available options are available in the file named
"sampleConfig/DB_CONFIG" in the following repository:
https://bitbucket.org/skskeyserver/sks-keyserver/src
'';
};
hkpAddress = mkOption {
default = [ "127.0.0.1" "::1" ];
type = types.listOf types.str;
description = ''
Domain names, IPv4 and/or IPv6 addresses to listen on for HKP
requests.
'';
};
hkpPort = mkOption {
default = 11371;
type = types.ints.u16;
description = "HKP port to listen on.";
};
webroot = mkOption {
type = types.nullOr types.path;
default = "${sksPkg.webSamples}/OpenPKG";
defaultText = "\${pkgs.sks.webSamples}/OpenPKG";
description = ''
Source directory (will be symlinked, if not null) for the files the
built-in webserver should serve. SKS (''${pkgs.sks.webSamples})
provides the following examples: "HTML5", "OpenPKG", and "XHTML+ES".
The index file can be named index.html, index.htm, index.xhtm, or
index.xhtml. Files with the extensions .css, .es, .js, .jpg, .jpeg,
.png, or .gif are supported. Subdirectories and filenames with
anything other than alphanumeric characters and the '.' character
will be ignored.
'';
};
};
};
config = mkIf cfg.enable {
users = {
users.sks = {
isSystemUser = true;
description = "SKS user";
home = cfg.dataDir;
createHome = true;
group = "sks";
useDefaultShell = true;
packages = [ sksPkg pkgs.db ];
};
groups.sks = { };
};
systemd.services = let
hkpAddress = "'" + (builtins.concatStringsSep " " cfg.hkpAddress) + "'" ;
hkpPort = builtins.toString cfg.hkpPort;
in {
"sks-db" = {
description = "SKS database server";
after = [ "network.target" ];
wantedBy = [ "multi-user.target" ];
preStart = ''
${lib.optionalString (cfg.webroot != null)
"ln -sfT \"${cfg.webroot}\" web"}
mkdir -p dump
${sksPkg}/bin/sks build dump/*.gpg -n 10 -cache 100 || true #*/
${sksPkg}/bin/sks cleandb || true
${sksPkg}/bin/sks pbuild -cache 20 -ptree_cache 70 || true
# Check that both database configs are symlinks before overwriting them
# TODO: The initial build will be without DB_CONFIG, but this will
# hopefully not cause any significant problems. It might be better to
# create both directories manually but we have to check that this does
# not affect the initial build of the DB.
for CONFIG_FILE in KDB/DB_CONFIG PTree/DB_CONFIG; do
if [ -e $CONFIG_FILE ] && [ ! -L $CONFIG_FILE ]; then
echo "$CONFIG_FILE exists but is not a symlink." >&2
echo "Please remove $PWD/$CONFIG_FILE manually to continue." >&2
exit 1
fi
ln -sf ${dbConfig} $CONFIG_FILE
done
'';
serviceConfig = {
WorkingDirectory = "~";
User = "sks";
Group = "sks";
Restart = "always";
ExecStart = "${sksPkg}/bin/sks db -hkp_address ${hkpAddress} -hkp_port ${hkpPort}";
};
};
};
};
}