diff options
Diffstat (limited to 'nixpkgs/nixos/modules/services/networking/libreswan.nix')
-rw-r--r-- | nixpkgs/nixos/modules/services/networking/libreswan.nix | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/nixpkgs/nixos/modules/services/networking/libreswan.nix b/nixpkgs/nixos/modules/services/networking/libreswan.nix new file mode 100644 index 000000000000..280158b89f61 --- /dev/null +++ b/nixpkgs/nixos/modules/services/networking/libreswan.nix @@ -0,0 +1,129 @@ +{ config, lib, pkgs, ... }: + +with lib; + +let + + cfg = config.services.libreswan; + + libexec = "${pkgs.libreswan}/libexec/ipsec"; + ipsec = "${pkgs.libreswan}/sbin/ipsec"; + + trim = chars: str: let + nonchars = filter (x : !(elem x.value chars)) + (imap0 (i: v: {ind = i; value = v;}) (stringToCharacters str)); + in + if length nonchars == 0 then "" + else substring (head nonchars).ind (add 1 (sub (last nonchars).ind (head nonchars).ind)) str; + indent = str: concatStrings (concatMap (s: [" " (trim [" " "\t"] s) "\n"]) (splitString "\n" str)); + configText = indent (toString cfg.configSetup); + connectionText = concatStrings (mapAttrsToList (n: v: + '' + conn ${n} + ${indent v} + + '') cfg.connections); + configFile = pkgs.writeText "ipsec.conf" + '' + config setup + ${configText} + + ${connectionText} + ''; + +in + +{ + + ###### interface + + options = { + + services.libreswan = { + + enable = mkEnableOption "libreswan ipsec service"; + + configSetup = mkOption { + type = types.lines; + default = '' + protostack=netkey + nat_traversal=yes + virtual_private=%v4:10.0.0.0/8,%v4:192.168.0.0/16,%v4:172.16.0.0/12,%v4:25.0.0.0/8,%v4:100.64.0.0/10,%v6:fd00::/8,%v6:fe80::/10 + ''; + example = '' + secretsfile=/root/ipsec.secrets + protostack=netkey + nat_traversal=yes + virtual_private=%v4:10.0.0.0/8,%v4:192.168.0.0/16,%v4:172.16.0.0/12,%v4:25.0.0.0/8,%v4:100.64.0.0/10,%v6:fd00::/8,%v6:fe80::/10 + ''; + description = "Options to go in the 'config setup' section of the libreswan ipsec configuration"; + }; + + connections = mkOption { + type = types.attrsOf types.lines; + default = {}; + example = { + myconnection = '' + auto=add + left=%defaultroute + leftid=@user + + right=my.vpn.com + + ikev2=no + ikelifetime=8h + ''; + }; + description = "A set of connections to define for the libreswan ipsec service"; + }; + }; + + }; + + + ###### implementation + + config = mkIf cfg.enable { + + environment.systemPackages = [ pkgs.libreswan pkgs.iproute ]; + + systemd.services.ipsec = { + description = "Internet Key Exchange (IKE) Protocol Daemon for IPsec"; + path = [ + "${pkgs.libreswan}" + "${pkgs.iproute}" + "${pkgs.procps}" + "${pkgs.nssTools}" + "${pkgs.iptables}" + "${pkgs.nettools}" + ]; + + wants = [ "network-online.target" ]; + after = [ "network-online.target" ]; + wantedBy = [ "multi-user.target" ]; + + serviceConfig = { + Type = "simple"; + Restart = "always"; + EnvironmentFile = "-${pkgs.libreswan}/etc/sysconfig/pluto"; + ExecStartPre = [ + "${libexec}/addconn --config ${configFile} --checkconfig" + "${libexec}/_stackmanager start" + "${ipsec} --checknss" + "${ipsec} --checknflog" + ]; + ExecStart = "${libexec}/pluto --config ${configFile} --nofork \$PLUTO_OPTIONS"; + ExecStop = "${libexec}/whack --shutdown"; + ExecStopPost = [ + "${pkgs.iproute}/bin/ip xfrm policy flush" + "${pkgs.iproute}/bin/ip xfrm state flush" + "${ipsec} --stopnflog" + ]; + ExecReload = "${libexec}/whack --listen"; + }; + + }; + + }; + +} |