Files
smallwebwaf/internal/waf/reputation.go
clawbot 478c3affad
check / check (push) Failing after 2m23s
Remove the CrowdSec decision feed (closes #315)
sneak ruled to remove it. Gone: the heuristic crowdsec, the ban cause
crowdsec and its earlier_bans count, the tag crowdsec, the settings
SWW_WAF_CROWDSEC_LAPI_URL and SWW_WAF_CROWDSEC_LAPI_KEY, the decision
list fetch and parse in internal/reputation, their tests, and every
mention in the README, SPEC.md and docs/. EVALUATION.md keeps its
comparison of tools.

The ban ledger's internal ban function loses its expires parameter,
which only CrowdSec bans used.

Model: opus-5-5
2026-11-13 19:08:21 +00:00

48 lines
1.5 KiB
Go

package waf
// What the reputation heuristics share: blocklists, dnsbl and abuseipdb.
import (
"sneak.berlin/go/smallwebwaf/internal/alerts"
"sneak.berlin/go/smallwebwaf/internal/bans"
)
// deny is the SWW_WAF_BLOCKLIST_ACTION and the SWW_WAF_DNSBL_ABUSEIPDB_ACTION that
// refuses the requests of a client a source lists.
const deny = "deny"
// noteListed notes each of sources, the URLs of the blocklists or the
// DNSBL zones, their keys masked, that list the client, as noteHit does,
// with reason.
func (rq *request) noteListed(sources []string, reason string) {
for _, source := range sources {
rq.noteHit(bans.ReputationHit{Source: source}, reason)
}
}
// noteHit adds hit's source, which lists the client, to the log line's
// reputation, and hit to the notes of a ban the request makes, counts the
// source in the metrics, and raises a reputation_hit alert with reason,
// whose detail gives hit's source and score.
func (rq *request) noteHit(hit bans.ReputationHit, reason string) {
detail := map[string]any{"source": hit.Source}
if hit.Score != nil {
detail["score"] = *hit.Score
}
rq.line.Reputation = append(rq.line.Reputation, hit.Source)
rq.reputation = append(rq.reputation, hit)
rq.h.metrics.ReputationHit(hit.Source)
rq.h.alerts.Raise(alerts.Alert{
Event: alerts.EventReputationHit,
Host: rq.site,
Client: rq.client,
Netblock: rq.h.clientGroup(rq.client),
ASN: rq.line.ASN,
ASName: rq.line.ASName,
Country: rq.line.Country,
Reason: reason,
Detail: detail,
})
}