nixpkgs/nixos/tests/dnsdist.nix

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{ pkgs, runTest }:
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let
inherit (pkgs) lib;
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baseConfig = {
networking.nameservers = [ "::1" ];
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services.bind = {
enable = true;
extraOptions = "empty-zones-enable no;";
zones = lib.singleton {
name = ".";
master = true;
file = pkgs.writeText "root.zone" ''
$TTL 3600
. IN SOA ns.example.org. admin.example.org. ( 1 3h 1h 1w 1d )
. IN NS ns.example.org.
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ns.example.org. IN A 192.168.0.1
ns.example.org. IN AAAA abcd::1
1.0.168.192.in-addr.arpa IN PTR ns.example.org.
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'';
};
};
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services.dnsdist = {
enable = true;
listenPort = 5353;
extraConfig = ''
newServer({address="127.0.0.1:53", name="local-bind"})
'';
};
};
in
{
base = runTest {
name = "dnsdist-base";
meta.maintainers = with lib.maintainers; [ jojosch ];
nodes.machine = baseConfig;
testScript = ''
machine.wait_for_unit("bind.service")
machine.wait_for_open_port(53)
machine.succeed("host -p 53 192.168.0.1 | grep -qF ns.example.org")
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machine.wait_for_unit("dnsdist.service")
machine.wait_for_open_port(5353)
machine.succeed("host -p 5353 192.168.0.1 | grep -qF ns.example.org")
'';
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};
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dnscrypt = runTest {
name = "dnsdist-dnscrypt";
meta.maintainers = with lib.maintainers; [ rnhmjoj ];
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nodes.server = lib.mkMerge [
baseConfig
{
networking.firewall.allowedTCPPorts = [ 443 ];
networking.firewall.allowedUDPPorts = [ 443 ];
services.dnsdist.dnscrypt.enable = true;
services.dnsdist.dnscrypt.providerKey = "${./dnscrypt-wrapper/secret.key}";
}
];
nodes.client = {
services.dnscrypt-proxy2.enable = true;
services.dnscrypt-proxy2.upstreamDefaults = false;
services.dnscrypt-proxy2.settings =
{ server_names = [ "server" ];
listen_addresses = [ "[::1]:53" ];
cache = false;
# Computed using https://dnscrypt.info/stamps/
static.server.stamp =
"sdns://AQAAAAAAAAAADzE5Mi4xNjguMS4yOjQ0MyAUQdg6_RIIpK6pHkINhrv7nxwIG5c7b_m5NJVT3A1AXRYyLmRuc2NyeXB0LWNlcnQuc2VydmVy";
};
networking.nameservers = [ "::1" ];
};
testScript = ''
with subtest("The DNSCrypt server is accepting connections"):
server.wait_for_unit("bind.service")
server.wait_for_unit("dnsdist.service")
server.wait_for_open_port(443)
almost_expiration = server.succeed("date --date '14min'").strip()
with subtest("The DNSCrypt client can connect to the server"):
client.wait_until_succeeds("journalctl -u dnscrypt-proxy2 --grep '\[server\] OK'")
with subtest("DNS queries over UDP are working"):
client.wait_for_open_port(53)
client.succeed("host -U 192.168.0.1 | grep -qF ns.example.org")
with subtest("DNS queries over TCP are working"):
client.wait_for_open_port(53)
client.succeed("host -T 192.168.0.1 | grep -qF ns.example.org")
with subtest("The server rotates the ephemeral keys"):
server.succeed(f"date -s '{almost_expiration}'")
client.succeed(f"date -s '{almost_expiration}'")
server.wait_until_succeeds("journalctl -u dnsdist --grep 'rotated certificate'")
with subtest("The client can still connect to the server"):
client.wait_until_succeeds("host -T 192.168.0.1")
client.wait_until_succeeds("host -U 192.168.0.1")
'';
};
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}