xin/configs/tailnet.nix

219 lines
5.9 KiB
Nix

{ config
, pkgs
, lib
, inputs
, xinlib
, ...
}:
let
tailnetACLs =
let
acls = {
hosts = {
console = "100.83.166.33";
nbc = "100.74.8.55";
startpage = "127.0.0.1";
gitle = "100.111.162.87";
faf = "100.80.94.131";
h = "100.83.77.133";
box = "100.115.16.150";
pwntie = "100.84.170.57";
sputnik = "100.78.154.31";
europa = "100.64.26.122";
il = "100.86.182.99";
};
tagOwners = {
"tag:admin" = [ "autogroup:admin" ];
"tag:untrusted" = [ "qbit@tapenet.org" ];
"tag:ro-service" = [ "qbit@tapenet.org" ];
"tag:mobile" = [ "qbit@tapenet.org" ];
"tag:laptop" = [ "qbit@tapenet.org" ];
"tag:internal-server" = [ "qbit@tapenet.org" ];
"tag:external-server" = [ "qbit@tapenet.org" ];
"tag:work" = [ "qbit@tapenet.org" ];
"tag:dns-server" = [ "qbit@tapenet.org" ];
"tag:openbsd" = [ "qbit@tapenet.org" ];
};
acls = [
{
# Allow laptops and mobile devices to ssh to everything
action = "accept";
src = [ "tag:mobile" "tag:laptop" ];
dst = [ "*:*" ];
}
{
"action" = "accept";
"src" = [ "tag:internal-server" "tag:external-server" "tag:work" "tag:laptop" ];
"dst" = [ "nbc:443" ];
}
{
"action" = "accept";
"src" = [ "tag:untrusted" "tag:internal-server" ];
"dst" = [ "tag:ro-service:443" ];
}
{
"action" = "accept";
"src" = [ "tag:work" ];
"dst" = [ "console:2222" "startpage:443" ];
}
{
"action" = "accept";
"src" = [ "tag:openbsd" ];
"dst" = [ "box:443" ];
}
{
# prometheus
"action" = "accept";
"src" = [ "box" ];
"dst" = [ "h:9002" "pwntie:9002" ];
}
{
# DNS
"action" = "accept";
"src" = [ "*" ];
"dst" = [ "faf:53" ];
"proto" = "udp";
}
{
# ollama
"action" = "accept";
"src" = [ "europa" ];
"dst" = [ "pwntie:11434" ];
"proto" = "tcp";
}
];
tests = [
{
# RO service can't access things
"src" = "tag:ro-service";
"deny" = [ "tag:laptop:443" "tag:mobile:80" "tag:laptop:22" ];
}
{
"src" = "tag:external-server";
"deny" = [ "tag:laptop:22" ];
}
{
"src" = "tag:laptop";
"allow" = [ "tag:ro-service:443" "tag:ro-service:80" "tag:external-server:22" ];
}
{
"src" = "tag:laptop";
"allow" = [ "qbit@tapenet.org:22" ];
}
{
"src" = "tag:untrusted";
"deny" = [ "tag:laptop:22" ];
"allow" = [ "tag:ro-service:443" ];
}
{
"src" = "tag:laptop";
"allow" = [ "tag:untrusted:22" "tag:untrusted:2222" "tag:work:22" ];
}
{
"src" = "tag:work";
"deny" = [ "tag:laptop:22" ];
}
# Gitle shouldn't be able to access things, but things should access it
{
"src" = "gitle";
"deny" = [ "tag:laptop:22" ];
}
{
"src" = "tag:laptop";
"allow" = [ "gitle:22" ];
}
{
"src" = "tag:laptop";
"allow" = [ "faf:53" ];
}
{
"src" = "tag:internal-server";
"allow" = [ "nbc:443" "tag:ro-service:443" ];
}
{
"src" = "tag:laptop";
"allow" = [ "h:8967" ];
}
{
"src" = "h";
"proto" = "udp";
"allow" = [ "faf:53" ];
}
{
"src" = "tag:openbsd";
"proto" = "tcp";
"allow" = [ "box:443" ];
}
{
"src" = "sputnik";
"proto" = "tcp";
"allow" = [ "europa:1714" ];
}
{
"src" = "sputnik";
"proto" = "udp";
"allow" = [ "europa:1714" ];
}
{
"src" = "europa";
"proto" = "tcp";
"allow" = [ "pwntie:11434" ];
}
];
};
in
pkgs.writeTextFile {
name = "tailnet-acls.json";
text = builtins.toJSON acls;
};
aclUpdateScript = pkgs.writeShellScriptBin
"tailnet-acl-updater"
''
set -eu
. ${config.sops.secrets.po_env.path}
JQ=${pkgs.jq}/bin/jq
PO=${inputs.po.packages.${pkgs.system}.po}/bin/po
APIURL="https://api.tailscale.com/api/v2/tailnet/-/acl"
TOKEN="$(cat ${config.sops.secrets.tailnet_acl_manager.path}):"
ERROR="$(${pkgs.curl}/bin/curl "$APIURL/validate" -u "$TOKEN" -d @${tailnetACLs} | $JQ -r .message)"
if [ "$ERROR" = "null" ]; then
RESP="$(${pkgs.curl}/bin/curl "$APIURL" -u "$TOKEN" -d @${tailnetACLs} | $JQ -r .message)"
if [ "$RESP" != "null" ]; then
$PO -title "Failed to update TailNet!" -body "$RESP"
fi
fi
'';
jobs = [
{
name = "update-talenet-acls";
script = "${aclUpdateScript}/bin/tailnet-acl-updater";
startAt = "*:30:00";
path = [ ];
inherit (config.nixManager) user;
}
];
enabled = config.nixManager.enable;
in
with lib; {
sops.secrets = mkIf enabled {
tailnet_acl_manager = {
owner = config.nixManager.user;
sopsFile = config.xin-secrets.manager;
};
po_env = {
owner = config.nixManager.user;
sopsFile = config.xin-secrets.manager;
};
};
systemd.services = mkIf enabled (listToAttrs (builtins.map xinlib.jobToService jobs));
}