TLS front door (Caddy) for this repo's own services: one hostname, a permanent
HTTP->HTTPS redirect, and the API on the same origin as the page. Home Assistant,
Grocy, Frigate and the rest keep their own ports — fronting HA brings its own
auth and websocket concerns and none of the problems below need it.
Three concrete reasons, not hygiene:
1. The admin panel's URL carries IDENTITY_TOKEN, which grants administrative
access to the person registry AND to the device grants that decide whether a
smart lock opens. On plain HTTP that is readable by anything on the smart-home
VLAN — a segment deliberately full of cheap IoT hardware.
2. getUserMedia requires a secure context, so register.html's camera cannot work
over http://192.168.x.x at all. It also failed SILENTLY: the call site used
`navigator.mediaDevices?.getUserMedia(...).then().catch()`, and optional
chaining short-circuits the whole chain — so neither handler ran, no "Camera
unavailable" message appeared, and registration proceeded photo-less with no
explanation. Verified in node. register.js now checks explicitly and says
which of the two cases it is; HTTPS is what actually fixes it.
3. Serving the page over HTTPS while ?api= still pointed at http://...:8097 would
have every call blocked as mixed content, so the API has to be proxied too.
tls: internal runs Caddy's own CA (no external dependency, works with no WAN at
all) with tools/export-proxy-ca.sh to fetch the root; tls: custom takes an
existing cert, which is how you'd use a real one from a DNS-01 challenge without
exposing anything. HSTS is deliberately not set — with an internal CA it would
turn a dismissible warning into a hard failure. Kiosks stay on plain HTTP for
now: a full-screen cert interstitial is not dismissible on a device with no
keyboard, so moving them is documented as a follow-up rather than done blind.
Empty service tokens now fill themselves in on the first build and land in
tokens.txt with what each is for. They are written BACK to the config, which is
the part that matters: a token is only useful because two machines agree on it,
so generating fresh randomness per build would produce a door panel that cannot
talk to the service it was built for. Blanks are filled once and never
overwritten. ha_token, mqtt_password, admin_password_hash and ssh_authorized_key
are deliberately not invented — tokens.txt lists them with the reason, so an
empty field is never a mystery.
32 new checks: token generation and stability across runs, disabled services
skipped, tokens.txt contents, config still valid after the rewrite, Caddyfile
routes and redirect, conditional pantry route, both TLS modes, and that the
derived admin URL keeps page and API on one origin. Nothing has been run against
a real Caddy — see proxy/README.md.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
arm64 was the last image in the household whose identity was typed in by hand
after building — Raspberry Pi Imager's OS Customisation dialog set the hostname
per unit at flash time. That's the exact step CoreSystemConfig.json exists to
remove, and it failed quietly when mistyped: spotify-connect-start reads
$(hostname) at service start, so a typo doesn't error, it just puts a Spotify
Connect device with the wrong room name in the picker.
The builder now substitutes the endpoint's hostname from the audio_endpoints
array into a generated copy of config/audio-endpoint.yaml and builds one image
per room, published like every other image as
iso-out/smarthome-<hostname>-<pairid>.img. The substitution is targeted rather
than a YAML round-trip: that template is mostly comments explaining an
unverified schema, and a load/dump would strip every one of them. It fails loudly
if it doesn't match exactly once, rather than shipping an image named after the
wrong room.
The cost is honest and documented: one full rpi-image-gen run per arm64 room,
qemu-emulated on an x86 builder, instead of one for all of them.
build.arm64_prebake: false restores the single generic image for households with
several arm64 rooms and a slow builder. Wi-Fi and SSH keys are still set in
Imager on arm64 either way — only the hostname moved into the build.
Also fixes the image-publishing search, which used `find -newer $BUILD_CONFIG`
and silently found nothing when the build finished within the same filesystem
timestamp granularity as the config write. Newest .img wins instead.
Resolves the per-room-identity asymmetry in project-plan Phase 15.5.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Renames the image output directory from build-output/ to iso-out/ (config
default, .gitignore, docs).
Also documents the asymmetry that showed up when building a household with
several endpoints: kiosks and amd64 audio endpoints get one image per array
entry, because their hostname is baked in at build time; the arm64 audio image
is generic and built once no matter how many arm64 rooms are listed, because Pi
Imager sets hostname and Wi-Fi per unit at flash time. That is project-plan
Phase 15.5's existing decision, now reflected in what build-all actually does
rather than only in prose.
Verified with a stubbed full run of a six-endpoint household: one build-all
invocation produced nine distinctly-named images with no overwrites.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Installation was six scripts each carrying its own copy of the container host's
IP, three that had to agree on IDENTITY_TOKEN, and every service URL typed by
hand with a port in it. Any one could be wrong, and the symptom was always the
same and always late: an image that boots fine and then can't reach something,
found after a 40-minute build and a reboot.
Two properties fix that class of bug:
- Nothing is written twice. No script in tools/ contains an IP, port or token.
- Anything derivable is derived. You give the subnet prefix once and one last
octet per host; every address and service URL is computed from those.
THE TWINNED PAIR. container_host.ip_last_octet 12 and llm_host 13 mean the
container host's OLLAMA_HOST *is* http://<prefix>.13:11434 — computed in the
same build, not typed into two files and kept in sync. Move the LLM host to .21
and the container host's Ollama URL follows; change the subnet and both halves
move along with every kiosk's URLs. Neither image can be built pointing at an
address the other isn't using. Both carry the same SMARTHOME_PAIR_ID (a hash of
the config's meaning, not its bytes) so two USB sticks can be checked against
each other later.
validate-config.py runs before every build and refuses to start on an error, so
a mistake costs seconds not an hour. It catches duplicate ports (including the
music_assistant/pantry_vision 8095 clash that Compose can't see because MA runs
network_mode:host — open decision #31), both hosts on one address, duplicate
hostnames across kiosks and audio endpoints, placeholder tokens (checked before
the length check, so padding "changeme" to 32 chars doesn't pass), a private key
pasted where the public one goes, and a kiosk pointed at a disabled service.
build-all.sh is the normal entry point — the images are a set that has to agree
with itself, so building one is the exception. It builds the core pair, every
kiosk, and every audio endpoint including both architectures (amd64 live-build
ISO and arm64 rpi-image-gen img are different toolchains, not one image).
The two new host ISOs install unattended with everything burnt in, including
service env files generated from derived values — which permanently removes the
class of bug that had chores.env shipping IDENTITY_URL=http://127.0.0.1:8097.
setup-container-host.sh and setup-llm-host.sh now read every config value as
${VAR:-default} so the images configure them without editing.
That also makes every ISO a credential: Wi-Fi PSK, tokens, MQTT and HA
credentials are readable by anyone holding the stick. .gitignore covers the
filled-in CoreSystemConfig.json and build-output/.
Tested: 43 config validation/derivation checks and 44 builder checks against the
real code paths with only `lb` stubbed — every generated env file, preseed,
network config, first-boot unit and build stamp is verified, including that a
port collision refuses the build before writing anything. No ISO has been built;
`lb build` needs live-build, root and a long fetch. tools/README.md says so.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Amir Alexander Abdelbaki