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hyperhive/nix/module-eval/matrix-core.nix

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Nix

# `checks.module-eval-matrix-core` — see ./lib.nix for the shared
# rationale (why this suite exists, naming convention, "evaluates
# not executes").
{
pkgs,
lib,
self,
nixosSystem,
shared,
}:
let
inherit
(import ./lib.nix {
inherit
pkgs
lib
self
nixosSystem
;
})
hive
hiveWithController
runGroup
;
# A deliberately odd `maxRequestSize`, so the number the assertion looks for
# cannot have come from a default or from another module's literal.
matrixBodyCap = hive {
deploy.singleHostSwarm = true;
deploy.matrix.maxRequestSize = 99000000;
};
# The same hive with the identity taken away, which separates "a homeserver
# is deployed" from "this host can authenticate to the store".
inherit (shared) matrixNoBaoIdentity;
# A hive host that does not run the homeserver: its hive-c0re reaches the
# homeserver across the network.
matrixElsewhere = shared.bareWithController;
# A homeserver whose server name was pinned to the hive domain, on the
# controller's host, with no homeserver of its own: the discovery answer
# sits on the hive domain and needs neither the homeserver nor the apex.
matrixPinned = hiveWithController {
swarm.matrix.serverName = "h1.t.local";
deploy.swarm-controller.enable = true;
deploy.swarm-ui.package = pkgs.emptyDirectory;
};
cases = [
{
# Two limits governed a matrix upload and nothing kept them in agreement,
# so raising the documented one past the gateway's hardcoded cap changed
# nothing. The second clause is the control: the old directive is gone, so
# a pass means the value is derived rather than that `hasInfix` matched
# something incidental. It targets the whole directive rather than the
# bare size, because the rendered config carries the comment above it and
# a prose mention of the old value would defeat a looser arm.
name = "the matrix gateway's body cap is derived from maxRequestSize, not a literal";
ok =
let
c = matrixBodyCap.services.nginx.virtualHosts."chat.t.local".locations."/_matrix/".extraConfig;
in
lib.hasInfix "client_max_body_size 100048576;" c && !(lib.hasInfix "client_max_body_size 50M" c);
}
{
# Absence arm. A hive with no client identity gets no
# store environment at all — the daemon reports a queue it cannot serve
# rather than a handshake it cannot explain.
name = "a hive with no client identity gives hive-c0re no store environment";
ok =
let
s = matrixNoBaoIdentity.systemd.services;
in
s ? hive-c0re
&& !(s.hive-c0re.environment ? BAO_ADDR)
&& !(lib.any (c: lib.hasPrefix "bao-" c) s.hive-c0re.serviceConfig.LoadCredential);
}
{
# The homeserver's OIDC secret has one route, the store, under
# matrix-ctl's leaf, landing where `clientSecretFile` points: the host's
# /run (tmpfs), which the container sees read-only. No unit copies it out
# of authelia's tree, even on a host that runs authelia, and nothing
# writes it to persistent disk.
name = "the homeserver reads its OIDC secret from the store under matrix-ctl's leaf";
ok =
let
s = matrixBodyCap.systemd.services;
u = s.swarm-bao-matrix-oidc;
m = matrixBodyCap.services.hyperhive.deploy.matrix;
bind = matrixBodyCap.containers.hive-matrix.bindMounts."/run/hive-matrix-oidc";
tmpfiles = matrixBodyCap.systemd.tmpfiles.rules;
in
matrixBodyCap.services.hyperhive.deploy.authelia.enable
&& u.environment.BAO_CLIENT_CERT == m.ctlBaoClientCertFile
&& u.environment.BAO_CLIENT_KEY == m.ctlBaoClientKeyFile
&& m.sso.clientSecretFile == "/run/hive-matrix-oidc/tuwunel.secret"
&& lib.hasInfix "bao kv get -field=value secret/swarm/services/tuwunel/oidc/client" u.script
&& lib.hasInfix "atomic_write_secret 0400 \"\" /run/hive-matrix-oidc/tuwunel.secret" u.script
&& !(lib.hasInfix "/var/lib" u.script)
&& !(lib.hasInfix "nixos-containers" u.script)
# The container sees the directory the unit writes, and cannot write it.
&& bind.hostPath == "/run/hive-matrix-oidc"
&& bind.isReadOnly
# tmpfiles keeps the bind source and the credential source in place and
# removes the copy an earlier version left on persistent disk.
&& lib.elem "d /run/hive-matrix-oidc 0700 root root -" tmpfiles
&& lib.elem "f /run/hive-matrix-oidc/tuwunel.secret 0400 root root -" tmpfiles
&& lib.elem "r /var/lib/nixos-containers/hive-matrix/var/lib/tuwunel-oidc/tuwunel.secret" tmpfiles
&& lib.hasInfix "refresh_consumer hive-matrix tuwunel.service" u.script
# An unpublished or empty secret fails the unit, so `storeRetry` retries it.
&& !(lib.hasInfix "exit 0" u.script)
&& lib.elem "container@hive-matrix.service" u.before
&& !(s ? hive-matrix-oidc-secret);
}
{
# No matrix-ctl leaf is a homeserver with no OIDC secret, which tuwunel
# refuses to start on. The unit still renders, and fails naming the
# options.
name = "a homeserver host with no matrix-ctl leaf renders a secret fetch that fails naming the options";
ok =
let
u = matrixNoBaoIdentity.systemd.services.swarm-bao-matrix-oidc;
in
!(u.environment ? BAO_CLIENT_CERT)
&& lib.hasInfix "deploy.matrix.ctlBaoClientCertFile" u.script
&& lib.hasInfix "exit 1" u.script
&& !(lib.hasInfix "bao login" u.script);
}
{
# hive-c0re logs in with the hive's matrix token over this URL, and on a
# host without the homeserver that login crosses the network, so the
# default must be TLS all the way to the daemon's environment.
name = "hive-c0re provisions matrix over https from a hive that does not run it";
ok =
!matrixElsewhere.services.hyperhive.deploy.matrix.enable
&& matrixElsewhere.services.hyperhive.swarm.matrix.apiUrl == "https://chat.t.local"
&&
matrixElsewhere.systemd.services.hive-c0re.environment.HIVE_MATRIX_API_URL
== "https://chat.t.local";
}
{
# The legacy redirect reaches the hive domain's vhost from a glue
# module, merged into the vhost hive-c0re declares, and only where the
# homeserver runs. The matrix-elsewhere arm reads the same vhost, which
# still exists there with its redirect, so its absence of the redirect
# cannot pass on a misspelled name. Under the default server name (the
# swarm domain) the hive domain answers no discovery on either host.
# The fixture's gateway is on a non-default TLS port, which none of the
# URLs carry.
name = "an unpinned hive domain's vhost carries the matrix redirect where the homeserver runs, and no discovery";
ok =
let
here = matrixNoBaoIdentity.services.nginx.virtualHosts."h1.t.local".locations;
elsewhere = matrixElsewhere.services.nginx.virtualHosts."h1.t.local".locations;
in
matrixNoBaoIdentity.services.hyperhive.gateway.httpsPort == 8443
&& lib.hasInfix "rewrite ^/matrix/(.*)$ https://chat.t.local/$1 permanent;" (
here."/matrix/".extraConfig or ""
)
&& lib.hasInfix "return 301 https://h1.hives.t.local$request_uri;" here."/".extraConfig
&& !(here ? "= /.well-known/matrix/client")
&& !(here ? "= /.well-known/matrix/server")
&& elsewhere ? "/"
&& !(elsewhere ? "/matrix/")
&& !(elsewhere ? "= /.well-known/matrix/client");
}
{
# A homeserver pinned to the hive domain keeps its discovery on that
# vhost, even though the host runs no homeserver, and not on the apex, which is a
# different server name. The apex arm is read on a vhost that
# exists (its `/` and `/api/` are there), so it cannot pass on a
# misspelled name.
name = "a server name pinned to the hive domain is answered on the hive domain's vhost and not on the apex";
ok =
let
onHive = matrixPinned.services.nginx.virtualHosts."h1.t.local".locations;
apex = matrixPinned.services.nginx.virtualHosts."t.local".locations;
in
!matrixPinned.services.hyperhive.deploy.matrix.enable
&& lib.hasInfix ''{"m.homeserver":{"base_url":"https://chat.t.local"}}'' (
onHive."= /.well-known/matrix/client".extraConfig or ""
)
&& lib.hasInfix ''{"m.server":"chat.t.local:443"}'' (
onHive."= /.well-known/matrix/server".extraConfig or ""
)
&& onHive ? "/"
&& apex ? "/"
&& apex ? "/api/"
&& !(apex ? "= /.well-known/matrix/client")
&& !(apex ? "= /.well-known/matrix/server");
}
];
in
runGroup "matrix-core" cases