nixpkgs/nixos/modules/services/networking/strongswan.nix
2017-11-02 14:39:14 +01:00

155 lines
4.4 KiB
Nix
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

{ config, lib, pkgs, ... }:
let
inherit (builtins) toFile;
inherit (lib) concatMapStringsSep concatStringsSep mapAttrsToList
mkIf mkEnableOption mkOption types;
cfg = config.services.strongswan;
ipsecSecrets = secrets: toFile "ipsec.secrets" (
concatMapStringsSep "\n" (f: "include ${f}") secrets
);
ipsecConf = {setup, connections, ca}:
let
# https://wiki.strongswan.org/projects/strongswan/wiki/IpsecConf
makeSections = type: sections: concatStringsSep "\n\n" (
mapAttrsToList (sec: attrs:
"${type} ${sec}\n" +
(concatStringsSep "\n" ( mapAttrsToList (k: v: " ${k}=${v}") attrs ))
) sections
);
setupConf = makeSections "config" { inherit setup; };
connectionsConf = makeSections "conn" connections;
caConf = makeSections "ca" ca;
in
builtins.toFile "ipsec.conf" ''
${setupConf}
${connectionsConf}
${caConf}
'';
strongswanConf = {setup, connections, ca, secrets, managePlugins, enabledPlugins}: toFile "strongswan.conf" ''
charon {
${if managePlugins then "load_modular = no" else ""}
${if managePlugins then ("load = " + (concatStringsSep " " enabledPlugins)) else ""}
plugins {
stroke {
secrets_file = ${ipsecSecrets secrets}
}
}
}
starter {
config_file = ${ipsecConf { inherit setup connections ca; }}
}
'';
in
{
options.services.strongswan = {
enable = mkEnableOption "strongSwan";
secrets = mkOption {
type = types.listOf types.path;
default = [];
example = [ "/run/keys/ipsec-foo.secret" ];
description = ''
A list of paths to IPSec secret files. These
files will be included into the main ipsec.secrets file with
the <literal>include</literal> directive. It is safer if these
paths are absolute.
'';
};
setup = mkOption {
type = types.attrsOf types.str;
default = {};
example = { cachecrls = "yes"; strictcrlpolicy = "yes"; };
description = ''
A set of options for the config setup section of the
<filename>ipsec.conf</filename> file. Defines general
configuration parameters.
'';
};
connections = mkOption {
type = types.attrsOf (types.attrsOf types.str);
default = {};
example = {
"%default" = {
keyexchange = "ikev2";
keyingtries = "1";
};
roadwarrior = {
auto = "add";
leftcert = "/run/keys/moonCert.pem";
leftid = "@moon.strongswan.org";
leftsubnet = "10.1.0.0/16";
right = "%any";
};
};
description = ''
A set of connections and their options for the conn xxx
sections of the <filename>ipsec.conf</filename> file.
'';
};
ca = mkOption {
type = types.attrsOf (types.attrsOf types.str);
default = {};
example = {
strongswan = {
auto = "add";
cacert = "/run/keys/strongswanCert.pem";
crluri = "http://crl2.strongswan.org/strongswan.crl";
};
};
description = ''
A set of CAs (certification authorities) and their options for
the ca xxx sections of the <filename>ipsec.conf</filename>
file.
'';
};
managePlugins = mkOption {
type = types.bool;
default = false;
description = ''
If set to true, this option will disable automatic plugin loading and
then tell strongSwan to enable the plugins specified in the
<option>enabledPlugins</option> option.
'';
};
enabledPlugins = mkOption {
type = types.listOf types.str;
default = [];
description = ''
A list of additional plugins to enable if
<option>managePlugins</option> is true.
'';
};
};
config = with cfg; mkIf enable {
systemd.services.strongswan = {
description = "strongSwan IPSec Service";
wantedBy = [ "multi-user.target" ];
path = with pkgs; [ kmod iproute iptables utillinux ]; # XXX Linux
wants = [ "keys.target" ];
after = [ "network-online.target" "keys.target" ];
environment = {
STRONGSWAN_CONF = strongswanConf { inherit setup connections ca secrets managePlugins enabledPlugins; };
};
serviceConfig = {
ExecStart = "${pkgs.strongswan}/sbin/ipsec start --nofork";
};
};
};
}