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authorlassulus <lass@lassul.us>2017-05-16 22:06:31 +0200
committerlassulus <lass@lassul.us>2017-05-16 22:18:54 +0200
commitfe639f585e9054096c2cee6e1a3cef9f22a37c78 (patch)
treea957e37396dc51bdfb485bf2610a0d9ec770edc0 /krebs/3modules/tinc.nix
parenta89e7a5c75204c5d1ad825f25430830f718a0411 (diff)
k3: retiolum.nix -> tinc.nix
Diffstat (limited to 'krebs/3modules/tinc.nix')
-rw-r--r--krebs/3modules/tinc.nix216
1 files changed, 216 insertions, 0 deletions
diff --git a/krebs/3modules/tinc.nix b/krebs/3modules/tinc.nix
new file mode 100644
index 000000000..67d383bb1
--- /dev/null
+++ b/krebs/3modules/tinc.nix
@@ -0,0 +1,216 @@
+{ config, pkgs, lib, ... }:
+with import <stockholm/lib>;
+let
+ out = {
+ options.krebs.tinc = api;
+ config = imp;
+ };
+
+ api = mkOption {
+ default = {};
+ description = ''
+ define a tinc network
+ '';
+ type = with types; attrsOf (submodule (tinc: {
+ options = let
+ netname = tinc.config._module.args.name;
+ in {
+
+ enable = mkEnableOption "krebs.tinc.${netname}" // { default = true; };
+
+ confDir = mkOption {
+ type = types.package;
+ default = pkgs.linkFarm "${netname}-etc-tinc"
+ (mapAttrsToList (name: path: { inherit name path; }) {
+ "hosts" = tinc.config.hostsPackage;
+ "tinc.conf" = pkgs.writeText "${netname}-tinc.conf" ''
+ Name = ${tinc.config.host.name}
+ Interface = ${netname}
+ ${concatMapStrings (c: "ConnectTo = ${c}\n") tinc.config.connectTo}
+ PrivateKeyFile = ${tinc.config.privkey.path}
+ Port = ${toString tinc.config.host.nets.${netname}.tinc.port}
+ ${tinc.config.extraConfig}
+ '';
+ "tinc-up" = pkgs.writeDash "${netname}-tinc-up" ''
+ ${tinc.config.iproutePackage}/sbin/ip link set ${netname} up
+ ${tinc.config.tincUp}
+ '';
+ });
+ };
+
+ host = mkOption {
+ type = types.host;
+ default = config.krebs.build.host;
+ };
+
+ netname = mkOption {
+ type = types.enum (attrNames tinc.config.host.nets);
+ default = netname;
+ description = ''
+ The tinc network name.
+ It is used to name the TUN device and to generate the default value for
+ <literal>config.krebs.tinc.retiolum.hosts</literal>.
+ '';
+ };
+
+ extraConfig = mkOption {
+ type = types.str;
+ default = "";
+ description = ''
+ Extra Configuration to be appended to tinc.conf
+ '';
+ };
+ tincUp = mkOption {
+ type = types.string;
+ default = let
+ net = tinc.config.host.nets.${netname};
+ iproute = tinc.config.iproutePackage;
+ in ''
+ ${optionalString (net.ip4 != null) /* sh */ ''
+ ${iproute}/sbin/ip -4 addr add ${net.ip4.addr} dev ${netname}
+ ${iproute}/sbin/ip -4 route add ${net.ip4.prefix} dev ${netname}
+ ''}
+ ${optionalString (net.ip6 != null) /* sh */ ''
+ ${iproute}/sbin/ip -6 addr add ${net.ip6.addr} dev ${netname}
+ ${iproute}/sbin/ip -6 route add ${net.ip6.prefix} dev ${netname}
+ ''}
+ '';
+ description = ''
+ tinc-up script to be used. Defaults to setting the
+ krebs.host.nets.<netname>.ip4 and ip6 for the new ips and
+ configures forwarding of the respecitive netmask as subnet.
+ '';
+ };
+
+ tincPackage = mkOption {
+ type = types.package;
+ default = pkgs.tinc;
+ description = "Tincd package to use.";
+ };
+
+ hosts = mkOption {
+ type = with types; attrsOf host;
+ default =
+ filterAttrs (_: h: hasAttr tinc.config.netname h.nets) config.krebs.hosts;
+ description = ''
+ Hosts to generate <literal>config.krebs.tinc.retiolum.hostsPackage</literal>.
+ Note that these hosts must have a network named
+ <literal>config.krebs.tinc.retiolum.netname</literal>.
+ '';
+ };
+
+ hostsArchive = mkOption {
+ type = types.package;
+ default = pkgs.runCommand "retiolum-hosts.tar.bz2" {} ''
+ ${pkgs.coreutils}/bin/ln -s ${tinc.config.hostsPackage} hosts
+ ${pkgs.gnutar}/bin/tar -hcjf $out hosts
+ '';
+ readOnly = true;
+ };
+
+ hostsPackage = mkOption {
+ type = types.package;
+ default = pkgs.stdenv.mkDerivation {
+ name = "${tinc.config.netname}-tinc-hosts";
+ phases = [ "installPhase" ];
+ installPhase = ''
+ mkdir $out
+ ${concatStrings (lib.mapAttrsToList (_: host: ''
+ echo ${shell.escape host.nets."${tinc.config.netname}".tinc.config} \
+ > $out/${shell.escape host.name}
+ '') tinc.config.hosts)}
+ '';
+ };
+ description = ''
+ Package of tinc host configuration files. By default, a package will
+ be generated from <literal>config.krebs.${tinc.config.netname}.hosts</literal>. This
+ option's main purpose is to expose the generated hosts package to other
+ modules, like <literal>config.krebs.tinc_graphs</literal>. But it can
+ also be used to provide a custom hosts directory.
+ '';
+ example = literalExample ''
+ (pkgs.stdenv.mkDerivation {
+ name = "my-tinc-hosts";
+ src = /home/tv/my-tinc-hosts;
+ installPhase = "cp -R . $out";
+ })
+ '';
+ };
+
+ iproutePackage = mkOption {
+ type = types.package;
+ default = pkgs.iproute;
+ description = "Iproute2 package to use.";
+ };
+
+ privkey = mkOption {
+ type = types.secret-file;
+ default = {
+ path = "${tinc.config.user.home}/tinc.rsa_key.priv";
+ owner = tinc.config.user;
+ source-path = toString <secrets> + "/${tinc.config.netname}.rsa_key.priv";
+ };
+ };
+
+ connectTo = mkOption {
+ type = types.listOf types.str;
+ ${if tinc.config.netname == "retiolum" then "default" else null} = [
+ "gum"
+ "ni"
+ "prism"
+ ];
+ description = ''
+ The list of hosts in the network which the client will try to connect
+ to. These hosts should have an 'Address' configured which points to a
+ routeable IPv4 or IPv6 address.
+
+ In stockholm this can be done by configuring:
+ krebs.hosts.${connect-host}.nets.${netname?"retiolum"}.via.ip4.addr = external-ip
+ krebs.hosts.${connect-host}.nets.${netname?"retiolum"}.tinc.port = 1655;
+ '';
+ };
+
+ user = mkOption {
+ type = types.user;
+ default = {
+ name = tinc.config.netname;
+ home = "/var/lib/${tinc.config.user.name}";
+ };
+ };
+ };
+ }));
+ };
+
+ imp = {
+ # TODO `environment.systemPackages = [ cfg.tincPackage cfg.iproutePackage ]` for each network,
+ # avoid conflicts in environment if the packages differ
+
+ krebs.secret.files = mapAttrs' (netname: cfg:
+ nameValuePair "${netname}.rsa_key.priv" cfg.privkey ) config.krebs.tinc;
+
+ users.users = mapAttrs' (netname: cfg:
+ nameValuePair "${netname}" {
+ inherit (cfg.user) home name uid;
+ createHome = true;
+ }
+ ) config.krebs.tinc;
+
+ systemd.services = mapAttrs (netname: cfg:
+ let
+ tinc = cfg.tincPackage;
+ iproute = cfg.iproutePackage;
+ in {
+ description = "Tinc daemon for ${netname}";
+ after = [ "network.target" ];
+ wantedBy = [ "multi-user.target" ];
+ requires = [ "secret.service" ];
+ path = [ tinc iproute ];
+ serviceConfig = rec {
+ Restart = "always";
+ ExecStart = "${tinc}/sbin/tincd -c ${cfg.confDir} -d 0 -U ${cfg.user.name} -D --pidfile=/var/run/tinc.${SyslogIdentifier}.pid";
+ SyslogIdentifier = netname;
+ };
+ }
+ ) config.krebs.tinc;
+ };
+in out