87 lines
3.0 KiB
Nix
87 lines
3.0 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.wg-clerie;
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in
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{
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options = {
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services.wg-clerie = {
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enable = mkEnableOption "VPN for public static IP";
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privateKeyFile = mkOption {
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type = with types; nullOr str;
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default = null;
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description = "Path to file containing private key for wireguard interface";
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};
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ipv6s = mkOption {
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type = with types; listOf str;
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default = [];
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description = "IPv6 interface addresses";
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};
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ipv4s = mkOption {
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type = with types; listOf str;
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default = [];
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description = "IPv4 interface addresses";
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};
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};
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};
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config = mkIf cfg.enable {
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networking.iproute2.enable = true;
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networking.iproute2.rttablesExtraConfig = ''
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200 wg-clerie
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'';
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petabyte.policyrouting = {
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enable = true;
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rules6 = (concatMap (ip: [
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{ rule = "from ${ip} lookup wg-clerie"; prio = 19000; }
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{ rule = "from ${ip} unreachable"; prio = 19001; }
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]) cfg.ipv6s) ++ [
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# Do not reach VPN server via VPN
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{ rule = "to 2a01:4f8:c0c:15f1::1/128 ipproto udp dport 51820 lookup main"; prio = 20000; }
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{ rule = "to 2a01:4f8:c0c:15f1::1/128 ipproto udp dport 51820 unreachable"; prio = 20001; }
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# Try direct routing first, fallback to VPN
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{ rule = "lookup main"; prio = 21000; }
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{ rule = "lookup wg-clerie"; prio = 21001; }
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{ rule = "unreachable"; prio = 22000; }
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];
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rules4 = (concatMap (ip: [
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{ rule = "from ${ip} lookup wg-clerie"; prio = 19000; }
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{ rule = "from ${ip} unreachable"; prio = 19001; }
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]) cfg.ipv4s) ++ [
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# Do not reach VPN server via VPN
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{ rule = "to 78.47.183.82/32 ipproto udp dport 51820 lookup main"; prio = 20000; }
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{ rule = "to 78.47.183.82/32 ipproto udp dport 51820 unreachable"; prio = 20001; }
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# Try direct routing first, fallback to VPN
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{ rule = "lookup main"; prio = 21000; }
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{ rule = "lookup wg-clerie"; prio = 21001; }
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{ rule = "unreachable"; prio = 22000; }
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];
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};
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networking.wireguard.enable = true;
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networking.wireguard.interfaces = {
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wg-clerie = {
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privateKeyFile = if cfg.privateKeyFile != null then cfg.privateKeyFile else
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if builtins.elem "wg-clerie" (attrNames config.sops.secrets) then config.sops.secrets.wg-clerie.path else
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config.age.secrets.wg-clerie.path;
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ips = cfg.ipv6s ++ cfg.ipv4s;
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table = "wg-clerie";
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peers = [
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{
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# Fallback to legacy IP if there is no route to VPN server
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endpoint = "$(ip route get 2a01:4f8:c0c:15f1::1 ipproto udp dport 51820 &>/dev/null && echo '[2a01:4f8:c0c:15f1::1]:51820' || echo '78.47.183.82:51820')";
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persistentKeepalive = 25;
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dynamicEndpointRefreshSeconds = 5;
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allowedIPs = [ "0.0.0.0/0" "::/0" "10.20.30.0/24" "2a01:4f8:c0c:15f1::/113" ];
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publicKey = "2p1Jqs3bkXbXHFWE6vp1yxHIFoUaZQEARS2nJzbkuBA=";
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}
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];
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};
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};
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};
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}
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