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|
{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.customTinc;
networkModule = {
extraConfig = mkOption {
default = ''
PingTimeout = 10
'';
type = types.lines;
description = ''
Extra lines to add to the tinc service configuration file.
'';
};
name = mkOption {
default = null;
type = types.nullOr types.str;
description = ''
The name of the node which is used as an identifier when communicating
with the remote nodes in the mesh. If null then the hostname of the system
is used.
'';
};
debugLevel = mkOption {
default = 0;
type = types.addCheck types.int (l: l >= 0 && l <= 5);
description = ''
The amount of debugging information to add to the log. 0 means little
logging while 5 is the most logging. <command>man tincd</command> for
more details.
'';
};
hosts = mkOption {
default = { };
type = types.loaOf types.lines;
description = ''
The name of the host in the network as well as the configuration for that host.
This name should only contain alphanumerics and underscores.
'';
};
interfaceType = mkOption {
default = "tun";
type = types.addCheck types.str (n: n == "tun" || n == "tap");
description = ''
The type of virtual interface used for the network connection
'';
};
interfaceConfig = mkOption {
default = { };
description = ''
Additional configuration for the generated network interface
'';
};
package = mkOption {
default = pkgs.tinc_pre;
description = ''
The package to use for the tinc daemon's binary.
'';
};
scripts = mkOption {
default = { };
type = types.loaOf (types.nullOr types.str);
description = ''
Hook scripts
'';
};
nmDispatch = mkOption {
type = types.bool;
default = config.networking.networkmanager.enable;
description = ''
Install a network-manager dispatcher script to automatically
connect to all remotes when networking is available
'';
};
};
in
{
###### interface
options = {
services.customTinc = {
networks = mkOption {
default = { };
type = types.loaOf (types.submodule { options = networkModule; });
description = ''
Defines the tinc networks which will be started.
Each network invokes a different daemon.
'';
};
};
};
###### implementation
config = mkIf (cfg.networks != { }) {
environment.etc = fold (a: b: a // b) { }
(flip mapAttrsToList cfg.networks (network: data:
flip mapAttrs' data.hosts (host: text: nameValuePair
("tinc/${network}/hosts/${host}")
({ inherit text; })
) // (flip mapAttrs' data.scripts (scriptName: text: nameValuePair
("tinc/${network}/${scriptName}")
({ mode = "0555"; inherit text; })
)) // {
"tinc/${network}/tinc.conf" = {
text = ''
Name = ${if data.name == null then "$HOST" else data.name}
DeviceType = ${data.interfaceType}
Device = /dev/net/tun
Interface = ${network}
ExperimentalProtocol = no
${data.extraConfig}
'';
};
}
));
networking.interfaces = flip mapAttrs' cfg.networks (network: data: nameValuePair
(network)
({
virtual = true;
virtualType = "${data.interfaceType}";
} // data.interfaceConfig)
);
networking.networkmanager.dispatcherScripts = concatLists (flip mapAttrsToList cfg.networks (network: data: optional data.nmDispatch {
type = "basic";
source = pkgs.writeScript "connect-${network}.sh" ''
#!${pkgs.stdenv.shell}
shopt -s extglob
case "''${2}" in
(?(vpn-)up)
${pkgs.systemd}/bin/systemctl --signal=ALRM --kill-who=main kill "tinc.${network}.service"
;;
esac
'';
}));
systemd.services = flip mapAttrs' cfg.networks (network: data: nameValuePair
("tinc.${network}")
({
description = "Tinc Daemon - ${network}";
wantedBy = [ "network.target" ];
after = [ "network-interfaces.target" ];
restartTriggers = [ config.environment.etc."tinc/${network}/tinc.conf".source ]
++ mapAttrsToList (host: _ : config.environment.etc."tinc/${network}/hosts/${host}".source) data.hosts;
serviceConfig = {
Type = "simple";
PIDFile = "/run/tinc.${network}.pid";
ExecStart = ''
${data.package}/bin/tincd -D -U tinc.${network} -n ${network} --pidfile /run/tinc.${network}.pid -d ${toString data.debugLevel}
'';
};
preStart = ''
${pkgs.openresolv}/bin/resolvconf -d tinc.${network} || true
mkdir -p /etc/tinc/${network}/hosts
# Determine how we should generate our keys
if type tinc >/dev/null 2>&1; then
# Tinc 1.1+ uses the tinc helper application for key generation
[ -f "/etc/tinc/${network}/ed25519_key.priv" ] || tinc -n ${network} generate-ed25519-keys
[ -f "/etc/tinc/${network}/rsa_key.priv" ] || tinc -n ${network} generate-rsa-keys 4096
else
# Tinc 1.0 uses the tincd application
[ -f "/etc/tinc/${network}/rsa_key.priv" ] || tincd -n ${network} -K 4096
fi
'';
})
);
users.extraUsers = flip mapAttrs' cfg.networks (network: _:
nameValuePair ("tinc.${network}") ({
description = "Tinc daemon user for ${network}";
isSystemUser = true;
})
);
};
}
|
