038d085001
`security.pki.certificateFiles` is read when the system is BUILT and the
swarm root is deliberately a runtime file (its key must never enter the
world-readable store), so there was nothing build-time to name and the
container trusted no swarm-internal CA. Federation with a peer whose
cert chains to the swarm root did not validate.
The bridge already existed: `lib/hive-ca-trust.nix`, which `hive-ci` and
`hive-forge` both cross. This wires the matrix container to it -- read-only
bind of the trust bundle, container ordered after `hive-tls-ca.service` --
rather than inventing a second mechanism.
Consumption is the per-runtime half, and it is not what it looks like.
tuwunel links no openssl, which makes `SSL_CERT_FILE` appear inapplicable.
It isn't: the outbound client is `reqwest` with the `rustls` feature,
which builds a `rustls_platform_verifier::Verifier`, and because tuwunel
calls `tls_certs_merge` (additive) rather than `tls_certs_only`, the
platform roots stay alongside its compiled-in webpki set. On Linux that
verifier resolves through `rustls-native-certs` to `openssl-probe`, which
reads `SSL_CERT_FILE`. Established by reading tuwunel 1.8.0 and reqwest
0.13.4 source, not inferred from the feature list -- an earlier reading of
mine concluded the opposite from the absence of a `native-roots` feature
name and was wrong.
The variable therefore names a CONCATENATION (system CAs + the bundle),
never the anchor alone: `openssl-probe` uses it *instead of* the default
store, so pointing it at the bundle would drop every public CA and break
federation with the wider matrix network -- trading a small outage for a
much larger one.
`container@hive-matrix` needed `mkMerge`: it already assigned `after` for
the gateway ordering and the helper contributes its own `after`/`requires`,
so two bare assignments would have conflicted rather than combined.
⚠️ Gate honesty: `state/eval-3093.sh` proves the mount, the ordering, the
bundle service and the env var are RENDERED -- 6 probes, including two
separate absence probes (mount and consumption are wired at different
sites, and the gateway outage happened precisely because two of three
sites tolerated a missing cert and the third did not). It CANNOT prove
tuwunel loads them: a build that ignores the variable evaluates
identically to one that honours it, and the chain above is
version-specific. That half wants an executed check on a real deploy.
606 lines
27 KiB
Nix
606 lines
27 KiB
Nix
{
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pkgs,
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lib,
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config,
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...
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}:
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let
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cfg = config.services.hyperhive.swarm.matrix;
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networkCfg = config.services.hyperhive.network;
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tlsCfg = config.services.hyperhive.tls;
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gatewayCfg = config.services.hyperhive.gateway;
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# Same runtime→build-time bridge hive-ci and hive-forge already cross:
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# binds the hive trust bundle (which folds in the swarm root) into the
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# container and orders the container after `hive-tls-ca.service`. The
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# *consumption* is per-runtime and stays here — see the bundle service
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# in the container config below.
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caTrust = import ./lib/hive-ca-trust.nix { inherit lib tlsCfg gatewayCfg; };
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useSelfSigned = caTrust.useSelfSigned;
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# tuwunel's own combined bundle, assembled at start. /run is tmpfs, so
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# it is rebuilt from the current CA every boot rather than going stale.
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matrixCaBundle = "/run/hive-matrix-ca/ca-bundle.crt";
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swarmDomain = config.services.hyperhive.swarm.domain;
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# Falls back to the SWARM domain: a swarm runs one homeserver, so its
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# identifier belongs to the swarm rather than to whichever hive happens
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# to host it — otherwise moving the container between hives would look
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# like a different homeserver.
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#
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# ⚠️ Changing this default is a BREAKING change in a way that moving
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# `gatewayHost` was not: `serverName` is baked irrevocably into every
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# user and room id, so a deployment that rebuilds onto a new one is a
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# *different homeserver*, not a renamed one. Existing hives pin the old
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# value explicitly (see the option's description); the default is what
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# a fresh swarm gets.
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#
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# Total on a null swarm domain, deliberately: the required-domain
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# assertion in hive-network.nix is what should fire, not a coercion
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# error from an unrelated option interpolating null.
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effectiveServerName =
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if cfg.serverName != null then
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cfg.serverName
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else if swarmDomain != null then
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swarmDomain
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else
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"invalid";
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# fluffychat-web build fixes: nixpkgs's `flutter341.buildFlutterApplication`
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# skips the dart web-worker compile + the emscripten native_imaging
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# build. Two derivations below cover both. Full rationale (why
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# passthru.pubspecLock.dependencySources, why `dontConfigure`, why
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# `make -C js`, why build-CWD-relative dart path): docs/matrix.md::
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# fluffychat-web build fixes.
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fluffychat-web-imaging = pkgs.stdenv.mkDerivation {
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pname = "fluffychat-web-imaging";
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version = pkgs.fluffychat-web.passthru.pubspecLock.dependencyVersions.native_imaging;
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src = pkgs.fluffychat-web.passthru.pubspecLock.dependencySources.native_imaging;
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nativeBuildInputs = with pkgs; [
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emscripten
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cmake
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gnumake
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jq
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];
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# cmake runs inside js/Makefile via `emcmake cmake`; the default
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# configurePhase would invoke cmake at the package root (no
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# CMakeLists) and fail.
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dontConfigure = true;
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buildPhase = ''
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runHook preBuild
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# emscripten on-demand sysroot build needs writable HOME + cache.
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export HOME=$TMPDIR
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export EM_CACHE=$TMPDIR/.emscriptencache
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mkdir -p $EM_CACHE
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# `make -C js` keeps pwd at source root for the installPhase.
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make -C js Imaging.js Imaging.wasm
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runHook postBuild
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'';
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installPhase = ''
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runHook preInstall
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mkdir -p $out
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install -m 644 js/Imaging.js $out/Imaging.js
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install -m 644 js/Imaging.wasm $out/Imaging.wasm
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runHook postInstall
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'';
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meta = with pkgs.lib; {
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description = "Imaging.js + Imaging.wasm built from the native_imaging dart package for fluffychat-web";
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homepage = "https://pub.dev/packages/native_imaging";
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license = licenses.agpl3Plus;
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};
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};
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fluffychat-web-fixed = pkgs.fluffychat-web.overrideAttrs (old: {
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# dart from the flutter341 closure (already pulled, no incremental
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# cost) to compile the web-worker entry point.
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nativeBuildInputs = (old.nativeBuildInputs or [ ]) ++ [ pkgs.flutter341.dart ];
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postInstall = (old.postInstall or "") + ''
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# `web/...` is BUILD-CWD-relative (not `$src/...`) so dart's
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# package_config walk-up hits buildFlutterApplication's
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# pub-get output `.dart_tool/`.
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${pkgs.flutter341.dart}/bin/dart compile js \
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-o $out/native_executor.js \
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web/native_executor.dart
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install -m 644 ${fluffychat-web-imaging}/Imaging.js $out/Imaging.js
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install -m 644 ${fluffychat-web-imaging}/Imaging.wasm $out/Imaging.wasm
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'';
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});
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in
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{
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# Private matrix-tuwunel homeserver wrapped in a nixos-container,
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# optional fluffychat-web client at matrix.<hive>/. Container shape,
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# serverName vs gatewayHost split, provisioning flow (registration
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# token + LoadCredential), assertion rationale, initial rollout
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# settings: docs/matrix.md. Vhost map + discovery flow + tuning
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# knobs: docs/gateway.md.
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# Matrix moved under `swarm` when the swarm-global services were
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# consolidated. One rename for the namespace: the subtree comes with it,
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# so existing hives keep evaluating and get one warning naming both paths.
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imports = [
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(lib.mkRenamedOptionModule
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[ "services" "hyperhive" "matrix" ]
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[ "services" "hyperhive" "swarm" "matrix" ]
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)
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];
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options.services.hyperhive.swarm.matrix = {
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enable = lib.mkOption {
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type = lib.types.bool;
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default = false;
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description = ''
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Run hive-matrix — a private matrix-tuwunel homeserver (in a
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nixos-container) for hyperhive agents.
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Matrix is a swarm-wide service — one homeserver, not one per
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hive — so `services.hyperhive.swarm.enableRequiredServices`
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turns this on as part of saying the swarm's shared services live
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on this host. Set it here directly to run the homeserver
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somewhere other than the host that holds the rest of them.
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'';
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};
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package = lib.mkOption {
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type = lib.types.package;
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default = pkgs.matrix-tuwunel;
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defaultText = lib.literalExpression "pkgs.matrix-tuwunel";
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description = ''
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matrix-tuwunel package to run inside the container. Defaults
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to nixpkgs's `pkgs.matrix-tuwunel`. Override to pin a
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specific upstream if you need an unreleased feature.
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'';
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};
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serverName = lib.mkOption {
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type = lib.types.nullOr lib.types.str;
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default = null;
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example = "chat.example.org";
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description = ''
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Matrix `server_name` — the host part of every user ID
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(`@argus:<server_name>`) and room ID minted on this
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homeserver. CRITICAL: must be stable from day one because
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it's embedded irrevocably in the identifiers.
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Defaults to `services.hyperhive.swarm.domain` (the bare swarm
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domain), because **a swarm runs one homeserver** — tying its
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identity to a single hive's domain would make relocating the
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container between hives look like a different homeserver.
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Combined with the `.well-known/matrix/{client,server}` routes
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the gateway serves at that domain, clients auto-discover the
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actual matrix endpoint without needing a subdomain. Override
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here only if you need a different server_name shape (e.g.
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`chat.example.org` for a bespoke hostname).
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**Breaking change, and the one on this page that cannot be
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undone by rebuilding.** This default has now moved twice — from
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`matrix.''${services.hyperhive.domain}`, then to the bare hive
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domain, and now to the swarm domain. Every existing homeserver
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must pin whichever value it already minted ids under, e.g.
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```nix
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services.hyperhive.swarm.matrix.serverName =
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config.services.hyperhive.domain; # or "matrix.''${…domain}"
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```
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before rebuilding. Adopting a new `server_name` does not rename
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the old users and rooms — it strands them, because their ids
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still name a homeserver that no longer answers.
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'';
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};
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httpPort = lib.mkOption {
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type = lib.types.port;
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default = 8008;
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description = ''
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TCP port tuwunel serves the matrix client-server API on.
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Default 8008 is the matrix-spec well-known port. Sits
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outside hyperhive's claimed ranges (dashboard 7000, every
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agent in 8100..8999 via FNV-1a hash). Federation listens on
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`federationPort` separately.
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'';
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};
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apiUrl = lib.mkOption {
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type = lib.types.nullOr lib.types.str;
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default = if cfg.enable then "http://127.0.0.1:${toString cfg.httpPort}" else null;
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defaultText = lib.literalExpression ''
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if services.hyperhive.swarm.matrix.enable
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then "http://127.0.0.1:''${toString services.hyperhive.swarm.matrix.httpPort}"
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else null
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'';
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example = "https://matrix.example.com";
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description = ''
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Client-server API base URL **hive-c0re itself** uses to
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provision matrix (register agent users, create the hive space
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and chat room, invite members). Distinct from the agent-facing
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`hyperhive.matrix.url`, which is the gateway vhost handed to
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each agent's `hive-matrix-daemon`.
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Defaults to the loopback listener **only when this module is the
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thing running tuwunel** — in that case the address is not a
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guess, it is where this module just put the container. Set it
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explicitly (with `enable = false`) when the homeserver runs on
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another machine; "everything on one host" is a special case of
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the full deployment, not the assumption.
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`null` means hive-c0re has no homeserver to provision against
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and matrix provisioning no-ops. There is deliberately no
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fallback compiled into the daemon: an address baked into the
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binary is one that builds fine and then talks to the wrong
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machine.
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'';
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||
};
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gatewayHost = lib.mkOption {
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type = lib.types.nullOr lib.types.str;
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# `chat.` under the SWARM domain — both halves change: a swarm runs
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# one homeserver, and the label follows the service rather than the
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# protocol.
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#
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# Total on a null swarm domain so the required-domain assertion in
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# hive-network.nix is the thing that fires; see the comment there.
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default = if swarmDomain == null then "chat.invalid" else "chat.${swarmDomain}";
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defaultText = lib.literalExpression ''"chat.''${services.hyperhive.swarm.domain}"'';
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example = "matrix.example.com";
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||
description = ''
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||
Public hostname for the matrix homeserver behind the gateway.
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||
Defaults to `chat.''${services.hyperhive.swarm.domain}` — the
|
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swarm's domain, because a swarm runs **one** homeserver. Set to
|
||
`null` to skip the gateway vhost (tuwunel stays direct on
|
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`httpPort`). See `docs/gateway.md` for the vhost map + matrix
|
||
discovery flow, and the federation port-8448 caveat at the
|
||
bottom of that doc.
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|
||
⚠️ **`gatewayHost` and `serverName` are different things, and
|
||
they carry very different costs.** `gatewayHost` is the API
|
||
listener hostname (where nginx proxies `/_matrix/*`) and is
|
||
free to change: it is a routing detail clients rediscover
|
||
through `.well-known`. `serverName` is the matrix-identifier
|
||
domain embedded **irrevocably** in every user and room id —
|
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adopting a new one is a different homeserver, not a rename.
|
||
Both defaults now sit under the swarm domain, but only this
|
||
one is safe to move on a running deployment.
|
||
|
||
A deployment that was running before this moved keeps its
|
||
current name by pinning
|
||
`matrix.''${services.hyperhive.domain}` here — exactly what the
|
||
old default rendered.
|
||
'';
|
||
};
|
||
|
||
openFirewall = lib.mkOption {
|
||
type = lib.types.bool;
|
||
default = false;
|
||
example = true;
|
||
description = ''
|
||
Open `httpPort` in the host firewall. Off by default
|
||
(secure-by-default): the host reaches the homeserver on
|
||
loopback, and agent containers reach it at `matrix.<domain>`
|
||
via the gateway — so the firewall open only matters for
|
||
access from outside the host. Flip to `true` when announcing
|
||
the homeserver to other hives or when an external matrix
|
||
client needs to reach the client-server API directly.
|
||
|
||
**Breaking change**: this used to default to `true`. If you
|
||
relied on the old default for external reach, add
|
||
`services.hyperhive.swarm.matrix.openFirewall = true;` to your host
|
||
config before rebuilding.
|
||
|
||
Note: federation (the matrix-spec well-known port 8448) is
|
||
intentionally not opened here. tuwunel serves the federation
|
||
API on the same `httpPort` as the client-server API by
|
||
default; reaching it on 8448 requires either binding tuwunel
|
||
to that port explicitly OR a reverse-proxy + `.well-known/
|
||
matrix/server` delegation, neither of which lives in this
|
||
module. Add that proxy config alongside whatever serves your
|
||
dashboard or forge on 443.
|
||
'';
|
||
};
|
||
|
||
trustedServers = lib.mkOption {
|
||
type = lib.types.listOf lib.types.str;
|
||
default = [ ];
|
||
example = [ "matrix.org" ];
|
||
description = ''
|
||
List of trusted matrix servers (homeservers whose signing
|
||
keys this server will fetch identity-server-style). Empty
|
||
by default — federation is enabled at the protocol level
|
||
but no peer is trusted until listed here, so the homeserver
|
||
is effectively closed until the operator declares hive
|
||
peers explicitly.
|
||
'';
|
||
};
|
||
|
||
maxRequestSize = lib.mkOption {
|
||
type = lib.types.ints.positive;
|
||
default = 20000000;
|
||
description = ''
|
||
Maximum size in bytes of a single matrix client request body.
|
||
Default 20 MB matches the matrix-spec recommendation for
|
||
media uploads + the upstream tuwunel default.
|
||
'';
|
||
};
|
||
|
||
registrationTokenFile = lib.mkOption {
|
||
type = lib.types.path;
|
||
default = "/var/lib/hyperhive/matrix-register-token";
|
||
description = ''
|
||
Host path to a file containing the matrix registration token
|
||
tuwunel reads to authorise new-account creation. The token is
|
||
generated automatically by `hive-c0re` on first boot (32-byte
|
||
random hex, mode 0600) and is bind-mounted read-only into the
|
||
tuwunel container at the same path. Agents never see this
|
||
token — hive-c0re uses it to provision per-agent accounts
|
||
and the agent only receives the resulting `access_token`.
|
||
Override only when integrating with externally-managed
|
||
registration tokens.
|
||
'';
|
||
};
|
||
|
||
allowEncryption = lib.mkOption {
|
||
type = lib.types.bool;
|
||
default = false;
|
||
description = ''
|
||
Server-side switch for matrix end-to-end encryption — sets
|
||
tuwunel's `allow_encryption`. Off by default: on the hive-internal
|
||
homeserver the operator already controls the transport, so server
|
||
E2EE adds key-management overhead (cross-signing, device
|
||
verification, undecryptable-message recovery) without a clear
|
||
threat-model win for the common single-hive case. Turn on when
|
||
agents join encrypted rooms on external / federated homeservers,
|
||
or when the operator wants message contents opaque to the
|
||
homeserver admin. Independent of the agent matrix client, which
|
||
always supports decryption so it can read encrypted rooms it is
|
||
invited to regardless of this flag; this option only governs
|
||
whether THIS homeserver permits room encryption.
|
||
'';
|
||
};
|
||
|
||
gui = {
|
||
enable = lib.mkOption {
|
||
type = lib.types.bool;
|
||
default = cfg.enable;
|
||
defaultText = lib.literalExpression "config.services.hyperhive.swarm.matrix.enable";
|
||
description = ''
|
||
Serve a matrix web client at `matrix.''${services.hyperhive.domain}/`.
|
||
Requires `matrix.gatewayHost != null` (default `matrix.<hive>`
|
||
when hive-domain set); the gateway itself always runs. When
|
||
off, the dashboard's `M4TR1X →` tab is hidden. See
|
||
`docs/gateway.md` for the discovery flow that lets clients
|
||
auto-find the sub-domain.
|
||
'';
|
||
};
|
||
|
||
package = lib.mkOption {
|
||
type = lib.types.package;
|
||
default = fluffychat-web-fixed;
|
||
defaultText = lib.literalMD ''
|
||
`pkgs.fluffychat-web` with a `postInstall` patch that adds
|
||
the three files `flutter341.buildFlutterApplication` skips.
|
||
'';
|
||
description = ''
|
||
Static web client dist served at `matrix.<hive>/`. Override
|
||
to swap fluffychat for hydrogen-web, cinny, element-web, or
|
||
an out-of-tree dist — any replacement is mounted at the
|
||
sub-domain root with the upstream-default `<base href "/">`,
|
||
no sub-path gymnastics needed.
|
||
'';
|
||
};
|
||
};
|
||
};
|
||
|
||
config = lib.mkIf cfg.enable {
|
||
# `serverName` is irrevocably embedded in user/room IDs; it derives
|
||
# from `services.hyperhive.domain` (required, asserted in
|
||
# hive-network.nix) when not set explicitly, so no separate
|
||
# domain/serverName assertion is needed here. gatewayHost may not be
|
||
# "" (same footgun as forge.domain — nginx rejects an empty
|
||
# server_name). docs/matrix.md::Assertion rationale.
|
||
assertions = [
|
||
{
|
||
assertion = cfg.gatewayHost == null || cfg.gatewayHost != "";
|
||
message = ''
|
||
services.hyperhive.swarm.matrix.gatewayHost = "" is rejected. The
|
||
rendered URLs would be invalid (nginx wildcard catch-all for
|
||
an empty server_name, /etc/hosts rejects empty entries).
|
||
Use `null` to disable the gateway vhost entirely (tuwunel
|
||
stays direct on httpPort), or set a non-empty hostname like
|
||
"matrix.example.com" or "homeserver.internal".
|
||
'';
|
||
}
|
||
];
|
||
|
||
# Activation-time token generation — without this the bind-mount
|
||
# would hand tuwunel an empty file on first boot and break every
|
||
# registration until restart. Idempotent;
|
||
# docs/matrix.md::Provisioning flow.
|
||
system.activationScripts.hive-matrix-register-token = lib.stringAfter [ "var" ] ''
|
||
tokenFile=${lib.escapeShellArg (toString cfg.registrationTokenFile)}
|
||
if [ ! -s "$tokenFile" ]; then
|
||
mkdir -p "$(dirname "$tokenFile")"
|
||
head -c 32 /dev/urandom | od -An -tx1 | tr -d ' \n' > "$tokenFile"
|
||
echo >> "$tokenFile"
|
||
echo "hive-matrix: generated registration token at $tokenFile"
|
||
fi
|
||
# Re-apply 0600 (normalises any pre-LoadCredential carry-over).
|
||
chmod 0600 "$tokenFile"
|
||
'';
|
||
|
||
containers.hive-matrix = {
|
||
autoStart = true;
|
||
ephemeral = false;
|
||
# Shared host netns — agents reach tuwunel at localhost:<port>.
|
||
privateNetwork = false;
|
||
# Read-only bind of the host-managed registration token; tuwunel
|
||
# reads it via systemd LoadCredential below (not directly).
|
||
bindMounts = {
|
||
${cfg.registrationTokenFile} = {
|
||
hostPath = cfg.registrationTokenFile;
|
||
isReadOnly = true;
|
||
};
|
||
}
|
||
// caTrust.bindMount;
|
||
config =
|
||
{ ... }:
|
||
{
|
||
system.stateVersion = "26.05";
|
||
|
||
# Shared host netns: this container's own firewall.service
|
||
# would rewrite the HOST ruleset (flush nixos-fw, drop the
|
||
# host's nixos-nat-* chains) at every boot — killing the
|
||
# bridge DHCP/DNS holes and agent NAT. The host firewall owns
|
||
# all filtering; never run one in here.
|
||
networking.firewall.enable = false;
|
||
|
||
# Swarm-internal trust reaches tuwunel at RUNTIME, not via
|
||
# `security.pki.certificateFiles`. That option is read when the
|
||
# system is BUILT, and the swarm root is deliberately a runtime
|
||
# file (`swarm.ca.stateDir`) because its key must never enter the
|
||
# store — so there is nothing build-time to name. The bind-mount
|
||
# above plus the bundle service below are what replaced it.
|
||
|
||
# tuwunel hard-fails to boot if `/etc/resolv.conf` has no
|
||
# `nameserver` line (`Failed to configure DNS resolver ... no
|
||
# nameservers found in config` → exit 1). This declarative
|
||
# nixos-container comes up with an EMPTY resolv.conf even with
|
||
# `networking.nameservers` set: the nixos-container default
|
||
# `useHostResolvConf = true` puts in-container resolvconf in
|
||
# host-tracking mode (ignores `networking.nameservers`, and never
|
||
# gets the host file across the shared-netns boundary), so it
|
||
# regenerates an empty file and tuwunel dies at boot.
|
||
#
|
||
# Trusting resolvconf to honour `networking.nameservers` doesn't
|
||
# work either — that's a RUNTIME resolvconf behaviour, not
|
||
# verifiable at eval time, and it still comes up empty in
|
||
# practice. So take resolvconf out of the loop entirely and
|
||
# write a STATIC `/etc/resolv.conf` from `bridgeIp` that nothing
|
||
# regenerates. Eval-proven: the generated
|
||
# `environment.etc."resolv.conf".text` is `nameserver <bridgeIp>`.
|
||
# This container always shares the host netns
|
||
# (`privateNetwork = false`), so it reaches `bridgeIp` regardless
|
||
# of agent-container isolation. See `docs/network.md`.
|
||
networking = {
|
||
# resolvconf is taken out of the loop entirely; the static
|
||
# `environment.etc."resolv.conf"` below is the sole source of
|
||
# the resolver file (no `nameservers` — nothing would read it).
|
||
useHostResolvConf = lib.mkForce false;
|
||
resolvconf.enable = lib.mkForce false;
|
||
};
|
||
|
||
# resolvconf is disabled above, so write the static resolver file
|
||
# explicitly — NixOS won't synthesise one from `nameservers` once
|
||
# resolvconf is off, and this is the file tuwunel parses at boot.
|
||
environment.etc."resolv.conf".text = ''
|
||
nameserver ${networkCfg.bridgeIp}
|
||
options edns0
|
||
'';
|
||
|
||
services.matrix-tuwunel = {
|
||
enable = true;
|
||
package = cfg.package;
|
||
settings.global = {
|
||
server_name = effectiveServerName;
|
||
# `address` + `port` are upstream `listOf` — wrap singles.
|
||
address = [ "0.0.0.0" ];
|
||
port = [ cfg.httpPort ];
|
||
max_request_size = cfg.maxRequestSize;
|
||
# Federation enabled at the protocol level; empty
|
||
# trustedServers keeps it effectively closed.
|
||
allow_federation = true;
|
||
trusted_servers = cfg.trustedServers;
|
||
# Token-gated registration. The absent
|
||
# `yes_i_am_very_very_sure_…_open_registration_…` flag
|
||
# keeps the server closed to anyone without the token.
|
||
allow_registration = true;
|
||
# LoadCredential below copies the host file into a
|
||
# 0400 dynamic-user-owned path; tuwunel reads from there.
|
||
registration_token_file = "/run/credentials/tuwunel.service/registration_token";
|
||
# Server-side E2EE is opt-in (default off); the agent matrix
|
||
# client always supports decryption regardless.
|
||
allow_encryption = cfg.allowEncryption;
|
||
# Tuwunel's default suffix is " 💕" — suppress it so agent
|
||
# display names are clean (just the agent name, no emoji).
|
||
new_user_displayname_suffix = "";
|
||
};
|
||
};
|
||
# Keeps DynamicUser=true + PrivateUsers=true intact — no
|
||
# host-side chown :tuwunel / GID-pin gymnastics needed.
|
||
# See `man systemd.exec` → LoadCredential.
|
||
systemd.services.tuwunel.serviceConfig.LoadCredential = [
|
||
"registration_token:${toString cfg.registrationTokenFile}"
|
||
];
|
||
|
||
# Federation TLS against a peer whose cert chains to the swarm
|
||
# root: tuwunel's outbound client is reqwest with the `rustls`
|
||
# feature, which builds a `rustls_platform_verifier::Verifier`
|
||
# and — because tuwunel calls `tls_certs_merge` rather than
|
||
# `tls_certs_only` — keeps the platform roots alongside its
|
||
# compiled-in webpki set. On Linux that verifier resolves through
|
||
# `rustls-native-certs` → `openssl-probe`, which reads
|
||
# `SSL_CERT_FILE`. So the openssl-shaped variable IS the lever
|
||
# here, despite tuwunel linking no openssl.
|
||
#
|
||
# ⚠️ CONCATENATE, never point at the anchor alone. `openssl-probe`
|
||
# uses `SSL_CERT_FILE` *instead of* the default location, so
|
||
# naming just the hive bundle would drop every public CA and
|
||
# break federation with the wider matrix network — trading a
|
||
# small outage for a much larger one.
|
||
systemd.services.hive-matrix-ca-bundle = lib.mkIf useSelfSigned {
|
||
description = "assemble tuwunel TLS trust bundle (system CAs + hive CA)";
|
||
wantedBy = [ "tuwunel.service" ];
|
||
before = [ "tuwunel.service" ];
|
||
serviceConfig = {
|
||
Type = "oneshot";
|
||
RemainAfterExit = true;
|
||
SyslogIdentifier = "hive-matrix-ca-bundle";
|
||
};
|
||
path = [ pkgs.coreutils ];
|
||
script = ''
|
||
set -euo pipefail
|
||
install -d -m 0755 /run/hive-matrix-ca
|
||
cat /etc/ssl/certs/ca-certificates.crt ${caTrust.caContainerPath} \
|
||
> ${matrixCaBundle}
|
||
chmod 0644 ${matrixCaBundle}
|
||
'';
|
||
};
|
||
systemd.services.tuwunel.environment.SSL_CERT_FILE = lib.mkIf useSelfSigned matrixCaBundle;
|
||
|
||
environment.systemPackages = [ cfg.package ];
|
||
};
|
||
};
|
||
|
||
networking.firewall = lib.mkIf cfg.openFirewall {
|
||
allowedTCPPorts = [
|
||
cfg.httpPort
|
||
];
|
||
};
|
||
|
||
# The matrix container's resolver is the dnsmasq that runs in the
|
||
# gateway container (bound at `bridgeIp`). Order the matrix
|
||
# container start after the gateway container so the resolver is up
|
||
# before tuwunel's first federation lookups. tuwunel boots fine
|
||
# without this — it configures the resolver from `/etc/resolv.conf`
|
||
# at startup and only queries on-demand (the boot failure this
|
||
# module guards against is an *empty* resolv.conf, a parse error,
|
||
# not a connectivity one) — so this is robustness, not a boot
|
||
# requirement. Soft `after` ordering (not `requires`) keeps the
|
||
# matrix container's lifecycle decoupled from the gateway's. The
|
||
# gateway always runs alongside hyperhive, so the gateway container
|
||
# unit always exists here. (Declarative `containers.<n>` →
|
||
# `container@<n>.service` — the nspawn template NixOS generates.)
|
||
# `mkMerge`, not a bare assignment: `caTrust.containerOrdering` also
|
||
# sets `after`/`requires` (so the bound trust bundle exists before
|
||
# nspawn wires the mount up), and two plain assignments to the same
|
||
# unit would conflict rather than combine.
|
||
systemd.services."container@hive-matrix" = lib.mkMerge [
|
||
{ after = [ "container@hive-gateway.service" ]; }
|
||
caTrust.containerOrdering
|
||
];
|
||
};
|
||
}
|