dotfiles/lib/wireguard.nix

31 lines
1,010 B
Nix

{ lib }: rec {
mapHostToPeerConfig = (netname: host: hostconf: {
# Generate the preshared key with wg genpsk
presharedKeyFile = "/secrets/wireguard/preshared/${netname}-${host}";
publicKey = hostconf.publicKey;
endpoint = hostconf.endpoint;
allowedIPs = [ hostconf.v4.ip ];
persistentKeepalive = hostconf.persistentKeepalive;
});
makeInterface = (hostName: netname: netconfig:
let isHub = netconfig.server.hostname == hostName;
in {
ips = [
"${netconfig.hosts.${hostName}.v4.ip}/${toString netconfig.v4.bitmask}"
];
listenPort = if isHub then netconfig.server.port else null;
privateKeyFile = "/secrets/wireguard/private/${netname}";
generatePrivateKeyFile = true;
peers = let
reachablePeerHosts = lib.filterAttrs (host: hostconf:
host != hostName && (hostconf.endpoint != null || isHub))
netconfig.hosts;
in lib.mapAttrsToList (mapHostToPeerConfig netname) reachablePeerHosts;
});
}