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|
{ config, pkgs, lib, ... }:
with config.krebs.lib;
let
out = {
options.krebs.tinc = api;
config = imp;
};
api = mkOption {
default = {};
description = ''
define a tinc network
'';
type = with types; attrsOf (submodule (tinc: {
options = {
enable = mkEnableOption "krebs.tinc.${tinc.config._module.args.name}" // { default = true; };
host = mkOption {
type = types.host;
default = config.krebs.build.host;
};
netname = mkOption {
type = types.enum (attrNames tinc.config.host.nets);
default = tinc.config._module.args.name;
description = ''
The tinc network name.
It is used to name the TUN device and to generate the default value for
<literal>config.krebs.tinc.retiolum.hosts</literal>.
'';
};
extraConfig = mkOption {
type = types.str;
default = "";
description = ''
Extra Configuration to be appended to tinc.conf
'';
};
tincPackage = mkOption {
type = types.package;
default = pkgs.tinc;
description = "Tincd package to use.";
};
hosts = mkOption {
type = with types; attrsOf host;
default =
filterAttrs (_: h: hasAttr tinc.config.netname h.nets) config.krebs.hosts;
description = ''
Hosts to generate <literal>config.krebs.retiolum.hostsPackage</literal>.
Note that these hosts must have a network named
<literal>config.krebs.retiolum.netname</literal>.
'';
};
hostsPackage = mkOption {
type = types.package;
default = pkgs.stdenv.mkDerivation {
name = "${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> + "/${tinc.config.netname}.rsa_key.priv";
};
};
connectTo = mkOption {
type = types.listOf types.str;
default = [ "fastpoke" "cd" "prism" "gum" ];
description = ''
The list of hosts in the network which the client will try to connect
to. These hosts should have an 'Address' configured which points to a
routeable IPv4 or IPv6 address.
In stockholm this can be done by configuring:
krebs.hosts.${connect-host}.nets.${netname?"retiolum"}.via.addrs4 =
[ "${external-ip} ${external-port}" ]
'';
};
user = mkOption {
type = types.user;
default = {
name = tinc.config.netname;
home = "/var/lib/${tinc.config.user.name}";
};
};
};
}));
};
imp = {
# TODO environment.systemPackages = [ tinc iproute ]; AND avoid conflicts
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
net = cfg.host.nets.${netname};
tinc = cfg.tincPackage;
iproute = cfg.iproutePackage;
confDir = let
namePathPair = name: path: { inherit name path; };
in pkgs.linkFarm "${netname}-etc-tinc" (mapAttrsToList namePathPair {
"hosts" = cfg.hostsPackage;
"tinc.conf" = pkgs.writeText "${cfg.netname}-tinc.conf" ''
Name = ${cfg.host.name}
Interface = ${netname}
${concatStrings (map (c: "ConnectTo = ${c}\n") cfg.connectTo)}
PrivateKeyFile = ${cfg.privkey.path}
${cfg.extraConfig}
'';
"tinc-up" = pkgs.writeDash "${netname}-tinc-up" ''
${iproute}/sbin/ip link set ${netname} up
${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}
''}
'';
});
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 ${confDir} -d 0 -U ${cfg.user.name} -D --pidfile=/var/run/tinc.${SyslogIdentifier}.pid";
SyslogIdentifier = netname;
};
} ) config.krebs.tinc;
};
in out
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