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SPEC: the one place for behaviour and reasons; docs/ as lookup lists only

docs/core-rule-set.md, docs/lookup.md, docs/reputation.md and docs/bans.md
restated the spec and are folded back into it and removed. The remaining
docs files hold only lists: settings with their defaults and value forms,
the request log's fields, the metrics, the endpoints, the state files and
their contents, the rule file format and default file, the alert events
and messages, the image's contents and pins, and the gitea notes. Every
behaviour each of them held moves to the spec, said once. The settings
groups have the same names in both files. Stale comments in
internal/state and script/example-app point at the right places.

Model: fable-5-1

2026-10-22 21:51:39 +00:00

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Admin endpoints

The endpoints under /_smallwebwaf/, what each takes and what each answers. "Admin endpoints" in SPEC.md says which checks they go through and how their tokens work.

GET /_smallwebwaf/healthz: 200 and ok, to anyone.
GET /_smallwebwaf/metrics: the metrics, for SWWAF_METRICS_TOKEN (see metrics.md).
GET /_smallwebwaf/bans: every ban held, under bans, each as bans.json lists it. Needs SWWAF_ADMIN_TOKEN, as do the three below.
POST /_smallwebwaf/bans: bans a netblock. The body is a JSON object of netblock, duration and, if you like, reason. netblock is a netblock such as 203.0.113.0/24, or a client's address, which bans its IPv4 netblock (SWWAF_BAN_SCOPE_V4_PREFIX) or its IPv6 group. duration is a duration such as 1h or 7d, or permanent. A bad body is answered 400, saying what is wrong:
- one that is not such an object, or has another field;
- one longer than 4 KiB;
- one that names an IPv4-mapped netblock, or an address with a zone.
DELETE /_smallwebwaf/bans/<client>: lifts every active ban covering the address <client>. It answers 404 when none is active.
GET /_smallwebwaf/clients/<ip>: what smallwebwaf knows of the client. Under client, its counters and history as clients.json holds them, or null when clients.json does not hold it. Under bans, every ban covering the address, with its notes.

Examples

With SWWAF_ADMIN_TOKEN set, and the token in $TOKEN:

# Every ban.
curl -H "Authorization: Bearer $TOKEN" https://app.example/_smallwebwaf/bans

# Ban 203.0.113.0/24 for seven days.
curl -H "Authorization: Bearer $TOKEN" \
    --json '{"netblock": "203.0.113.0/24", "duration": "7d", "reason": "probes for logins"}' \
    https://app.example/_smallwebwaf/bans

# Lift the bans on 203.0.113.9.
curl -H "Authorization: Bearer $TOKEN" -X DELETE \
    https://app.example/_smallwebwaf/bans/203.0.113.9

# What smallwebwaf knows of 203.0.113.9.
curl -H "Authorization: Bearer $TOKEN" \
    https://app.example/_smallwebwaf/clients/203.0.113.9

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Admin endpoints

Examples

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