129 lines
4.8 KiB
Nix
129 lines
4.8 KiB
Nix
let generateNodeConf = { lib, pkgs, config, privk, pubk, peerId, nodeId, ...}: {
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imports = [ common/user-account.nix ];
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systemd.services.systemd-networkd.environment.SYSTEMD_LOG_LEVEL = "debug";
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networking.useNetworkd = true;
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networking.useDHCP = false;
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networking.firewall.enable = false;
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virtualisation.vlans = [ 1 ];
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environment.systemPackages = with pkgs; [ wireguard-tools ];
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systemd.network = {
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enable = true;
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config = {
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routeTables.custom = 23;
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};
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netdevs = {
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"90-wg0" = {
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netdevConfig = { Kind = "wireguard"; Name = "wg0"; };
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wireguardConfig = {
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# NOTE: we're storing the wireguard private key in the
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# store for this test. Do not do this in the real
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# world. Keep in mind the nix store is
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# world-readable.
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PrivateKeyFile = pkgs.writeText "wg0-priv" privk;
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ListenPort = 51820;
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FirewallMark = 42;
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};
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wireguardPeers = [ {
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Endpoint = "192.168.1.${peerId}:51820";
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PublicKey = pubk;
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PresharedKeyFile = pkgs.writeText "psk.key" "yTL3sCOL33Wzi6yCnf9uZQl/Z8laSE+zwpqOHC4HhFU=";
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AllowedIPs = [ "10.0.0.${peerId}/32" ];
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PersistentKeepalive = 15;
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} ];
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};
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};
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networks = {
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"99-nope" = {
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matchConfig.Name = "eth*";
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linkConfig.Unmanaged = true;
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};
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"90-wg0" = {
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matchConfig = { Name = "wg0"; };
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address = [ "10.0.0.${nodeId}/32" ];
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routes = [
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{ Gateway = "10.0.0.${nodeId}"; Destination = "10.0.0.0/24"; }
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{ Gateway = "10.0.0.${nodeId}"; Destination = "10.0.0.0/24"; Table = "custom"; }
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];
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};
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"30-eth1" = {
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matchConfig = { Name = "eth1"; };
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address = [
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"192.168.1.${nodeId}/24"
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"fe80::${nodeId}/64"
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];
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routingPolicyRules = [
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{ Table = 10; IncomingInterface = "eth1"; Family = "both"; }
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{ Table = 20; OutgoingInterface = "eth1"; }
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{ Table = 30; From = "192.168.1.1"; To = "192.168.1.2"; SourcePort = 666 ; DestinationPort = 667; }
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{ Table = 40; IPProtocol = "tcp"; InvertRule = true; }
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{ Table = 50; IncomingInterface = "eth1"; Family = "ipv4"; }
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{ Table = 60; FirewallMark = 4; }
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{ Table = 70; FirewallMark = "16/0x1f"; }
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];
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};
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};
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};
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};
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in import ./make-test-python.nix ({pkgs, ... }: {
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name = "networkd";
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meta = with pkgs.lib.maintainers; {
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maintainers = [ picnoir ];
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};
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nodes = {
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node1 = { pkgs, ... }@attrs:
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let localConf = {
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privk = "GDiXWlMQKb379XthwX0haAbK6hTdjblllpjGX0heP00=";
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pubk = "iRxpqj42nnY0Qz8MAQbSm7bXxXP5hkPqWYIULmvW+EE=";
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nodeId = "1";
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peerId = "2";
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};
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in generateNodeConf (attrs // localConf);
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node2 = { pkgs, ... }@attrs:
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let localConf = {
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privk = "eHxSI2jwX/P4AOI0r8YppPw0+4NZnjOxfbS5mt06K2k=";
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pubk = "27s0OvaBBdHoJYkH9osZpjpgSOVNw+RaKfboT/Sfq0g=";
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nodeId = "2";
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peerId = "1";
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};
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in generateNodeConf (attrs // localConf);
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};
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testScript = ''
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start_all()
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node1.wait_for_unit("systemd-networkd-wait-online.service")
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node2.wait_for_unit("systemd-networkd-wait-online.service")
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# ================================
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# Networkd Config
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# ================================
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node1.succeed("grep RouteTable=custom:23 /etc/systemd/networkd.conf")
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node1.succeed("sudo ip route show table custom | grep '10.0.0.0/24 via 10.0.0.1 dev wg0 proto static'")
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# ================================
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# Wireguard
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# ================================
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node1.succeed("ping -c 5 10.0.0.2")
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node2.succeed("ping -c 5 10.0.0.1")
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# Is the fwmark set?
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node2.succeed("wg | grep -q 42")
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# ================================
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# Routing Policies
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# ================================
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# Testing all the routingPolicyRuleConfig members:
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# Table + IncomingInterface
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node1.succeed("sudo ip rule | grep 'from all iif eth1 lookup 10'")
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# OutgoingInterface
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node1.succeed("sudo ip rule | grep 'from all oif eth1 lookup 20'")
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# From + To + SourcePort + DestinationPort
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node1.succeed(
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"sudo ip rule | grep 'from 192.168.1.1 to 192.168.1.2 sport 666 dport 667 lookup 30'"
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)
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# IPProtocol + InvertRule
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node1.succeed("sudo ip rule | grep 'not from all ipproto tcp lookup 40'")
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# FirewallMark without a mask
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node1.succeed("sudo ip rule | grep 'from all fwmark 0x4 lookup 60'")
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# FirewallMark with a mask
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node1.succeed("sudo ip rule | grep 'from all fwmark 0x10/0x1f lookup 70'")
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'';
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})
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