Commit Graph
3 Commits
Author SHA1 Message Date
clawbot ddb95f5411 DNS blocklists asked in the background, verdicts kept (closes #104)
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Zones in SWWAF_DNSBL_ZONES are asked about each client (RFC 5782 names)
in the background, through the host's resolver or SWWAF_DNSBL_RESOLVER;
no request waits. Verdicts last SWWAF_REPUTATION_CACHE_TTL and are kept
in reputation.json, at most 100,000. After the blocklists,
SWWAF_REPUTATION_ACTION (limit:25) denies, limits or logs a listed
client; the log line names the zones, each raises reputation_hit, with
metrics by zone. A failed, timed-out or refused query gives no verdict,
raises source_failure, and pauses the zone a minute.

Judgement call: answers in 127.255.255.0/24 or outside 127.0.0.0/8 are failures.
Judgement call: the minute's pause after a failure; at most 1,000 queries at once.
Rule suppressed: paralleltest on the DNSBL tests (Go's resolver shares state across synctest bubbles), funlen on the test of every logged setting.

Model: opus-5-5
2026-10-07 18:00:50 +00:00
clawbot 2b8c98ba1f Blocklists and an AS percentage file fetched by URL (closes #29)
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SWWAF_BLOCKLIST_URLS names lists of addresses and netblocks, fetched every
SWWAF_BLOCKLIST_REFRESH (24h, never under 1h); an IPv4-mapped line stands
for its IPv4 address or netblock. reputation.json keeps each list's last
try, failed or not, even one cut off by a stop, which a restart waits on
as a running instance does, and its last good copy, whole, used while a
fetch fails. SWWAF_BLOCKLIST_ACTION denies, limits or only logs a listed
client; the log line names the lists, each raises reputation_hit, and a
failed fetch raises source_failure. SWWAF_ASN_LIMIT_PERCENT_URL is fetched
the same way and counts as SWWAF_ASN_LIMIT_PERCENT does, the lower winning.

Judgement call: a failed fetch is retried after the refresh, not sooner.
Not done: ban notes do not name the lists yet.

Model: opus-5-5
2026-10-07 19:09:41 +02:00
clawbot 2421cdc273 Lower limits for listed AS numbers and countries (closes #21)
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SWWAF_ASN_LIMIT_PERCENT and SWWAF_COUNTRY_LIMIT_PERCENT give the clients
of the AS numbers and countries they list that percentage of every rate
and byte limit, rounded down; SWWAF_ASN_BYTES_PERCENT and
SWWAF_COUNTRY_BYTES_PERCENT take its place for the byte limits of those
they list; SWWAF_UNKNOWN_LIMIT_PERCENT (100) covers clients without a
country. The lowest applies. While one lowers a limit, a request waits
for its client's lookup, and SWWAF_LOOKUP_SOURCE=off stops the start. Log
lines give limit_percent and bytes_percent with their settings; ban
notes, and so alerts, give the broken limit's.

Judgement call: a client without a country is unknown, whatever its AS number.
Judgement call: bytes_percent and its setting are log fields SPEC does not name.
Rule suppressed: funlen on FromEnvironment, one line per setting.

Model: opus-5-5
2026-10-07 14:22:01 +02:00