Logan CusanoandClaude Opus 5
ee633cbe46
Edge nodes are deployed to arbitrary locations by arbitrary people, so the
broker has to be reachable from the internet and secured on its own merits
rather than by a VPN.
Three defects made that impossible. The broker only had a plaintext 1883
listener; every node shared one drb-node password; and the ACL pattern used
%c, the client-supplied client id, so any holder of that shared password
could set client_id to another node and take over its namespace. The comment
claiming this cryptographically prevented cross-node access was wrong and is
gone.
Authentication now uses mosquitto 2.x's built-in dynamic-security plugin on
the stock eclipse-mosquitto image. c2-core administers it over the control
topic, creating each node's client on approval with username=<node_id> and
password=<its node_keys api_key>, attached to a role whose ACL is nodes/%u/#
against the authenticated username. One credential, one revocation point.
An HTTP-callback plugin was implemented first and rejected: that project is
archived upstream, which is not an acceptable dependency on an
internet-facing broker.
Because dynsec state is a second source of truth alongside Firestore,
approve/reissue/delete now write to the broker first and surface a 502
rather than drifting, and c2-core reconciles every approved node into dynsec
on startup.
Adds node self-enrollment (POST /nodes/enroll, GET /nodes/{id}/credentials)
so a new node can obtain its key over HTTPS without an operator handling
secrets by hand. Enrolling an already-approved node_id is refused on the
fleet token alone — otherwise a leaked token plus a guessable id would let
an attacker steal a live node's key before the real node asked for it.
Pickup secrets are stored hashed and returned once, and the endpoint is rate
limited per source IP.
Infrastructure: an 8883 TLS listener fed by Caddy's certificate via a
systemd path unit, a firewall rule for it, and Caddy now 404s /internal/*
so the api vhost cannot proxy internal routes.
Also fixes CORS, which allowed https://app.<domain> while the frontend is
served on the bare domain — every call from the portal would have failed —
and widens the vault gitignore to a glob, since ansible-vault leaves
backup siblings that the exact-name rule left committable.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
80 lines
3.8 KiB
Python
80 lines
3.8 KiB
Python
from pydantic_settings import BaseSettings
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from typing import Optional
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class Settings(BaseSettings):
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# MQTT
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mqtt_broker: str = "localhost"
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mqtt_port: int = 1883
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mqtt_user: Optional[str] = None
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mqtt_pass: Optional[str] = None
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# mosquitto's built-in dynamic-security plugin (see app/internal/dynsec.py).
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# "admin" is hardcoded by the plugin itself on first boot — not actually
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# configurable — kept as a named setting rather than a literal for
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# readability. mqtt_dynsec_admin_pass must equal the mosquitto
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# container's own MOSQUITTO_DYNSEC_PASSWORD env var (root .env /
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# root.env.j2) or c2-core can't administer node credentials at all.
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mqtt_dynsec_admin_user: str = "admin"
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mqtt_dynsec_admin_pass: Optional[str] = None
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# GCP
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gcp_credentials_path: Optional[str] = None # None → uses ADC
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gcs_bucket: Optional[str] = None # None → audio upload disabled
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firestore_database: str = "(default)"
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# Node health
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node_offline_threshold: int = 90 # seconds without checkin before marking offline
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# OpenAI (STT + intelligence)
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openai_api_key: Optional[str] = None
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stt_model: str = "whisper-1" # whisper-1 | gpt-4o-mini-transcribe | gpt-4o-transcribe
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# Google Maps (geocoding)
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google_maps_api_key: Optional[str] = None
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# Gemini (intelligence extraction, embeddings, incident summaries)
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gemini_api_key: Optional[str] = None
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# Correlation consensus models
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# corr_cheap_model — first-pass LLM correlator (runs on every call)
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# corr_smart_model — tiebreaker (only fires when rules and cheap LLM disagree)
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corr_cheap_model: str = "gemini-2.0-flash"
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corr_smart_model: str = "gemini-1.5-pro"
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summary_interval_minutes: int = 2 # how often the summary loop runs
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correlation_window_hours: int = 2 # slow/location path: max hours since last call
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embedding_similarity_threshold: float = 0.93 # slow-path: requires location corroboration
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embedding_no_location_threshold: float = 0.97 # slow-path: match without location (very high bar)
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embedding_cross_tg_threshold: float = 0.85 # cross-TG path: same dept + 2+ shared units
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location_proximity_km: float = 0.5 # radius for location-proximity matching
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geocode_max_km: float = 40.0 # reject geocode results farther than this from the node
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incident_auto_resolve_minutes: int = 90 # auto-resolve after N minutes with no new calls
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unit_continuity_max_idle_minutes: int = 20 # unit-continuity path: skip if incident idle > this
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recorrelation_scan_minutes: int = 60 # re-examine orphaned calls ended within this window
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tg_fast_path_idle_minutes: int = 90 # fast path: max minutes since incident last updated
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tg_dispatch_thin_idle_minutes: int = 10 # dispatch channels only: thin calls only attach to incidents idle < this many minutes
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# Vocabulary learning
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vocabulary_induction_interval_hours: int = 24 # how often the induction loop runs
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vocabulary_induction_sample_tokens: int = 4000 # ~tokens of transcript text sampled per system
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# Internal service key — allows server-side services (discord bot) to call C2 without Firebase
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service_key: Optional[str] = None
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# Fleet-wide token edge nodes present to POST /nodes/enroll on first boot.
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# Not a per-node secret — see routers/enrollment.py for why a leaked copy
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# of this alone can't steal an already-approved node's key.
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enrollment_token: Optional[str] = None
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# Upload size limit — reject audio files larger than this (bytes). Default 100 MB.
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upload_max_bytes: int = 100 * 1024 * 1024
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# CORS — set to your frontend origin(s) in production, e.g. ["https://app.example.com"]
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# Defaults to "*" for local development only.
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cors_origins: list[str] = ["*"]
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class Config:
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env_file = ".env"
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settings = Settings()
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