sneak
d31a052aff
check / check (push) Failing after 2m11s
The command is now `sww waf`, and the package is `internal/waf`. Types, functions, files, tests, comments, docs, the Dockerfile, the runit script, `script/`, compose examples, the log field `waf_line` and the `X-From-Waf` test header follow. No behaviour changes, and no setting changes name: rproxy already finds the waf through `SWRP_WAF_BACKEND`. Done with one `sed -i` (Discriminator and DISCRIMINATOR to WAF, discriminator to waf) over the files `git grep -i discriminator` listed, as sneak allowed for this rename, then `git mv` for the package and files. By hand afterwards: the header's spelling, which the linter requires, and the padding after `waf` in `sww`'s usage text. Model: opus-5-5
49 lines
1.5 KiB
Go
49 lines
1.5 KiB
Go
package waf
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// What the reputation heuristics share: blocklists, crowdsec, dnsbl and
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// abuseipdb.
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import (
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"sneak.berlin/go/smallwebwaf/internal/alerts"
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"sneak.berlin/go/smallwebwaf/internal/bans"
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)
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// deny is the SWW_BLOCKLIST_ACTION and the SWW_REPUTATION_ACTION that
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// refuses the requests of a client a source lists.
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const deny = "deny"
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// noteListed notes each of sources, the URLs of the blocklists or the
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// DNSBL zones, their keys masked, that list the client, as noteHit does,
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// with reason.
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func (rq *request) noteListed(sources []string, reason string) {
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for _, source := range sources {
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rq.noteHit(bans.ReputationHit{Source: source}, reason)
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}
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}
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// noteHit adds hit's source, which lists the client, to the log line's
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// reputation, and hit to the notes of a ban the request makes, counts the
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// source in the metrics, and raises a reputation_hit alert with reason,
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// whose detail gives hit's source and score.
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func (rq *request) noteHit(hit bans.ReputationHit, reason string) {
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detail := map[string]any{"source": hit.Source}
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if hit.Score != nil {
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detail["score"] = *hit.Score
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}
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rq.line.Reputation = append(rq.line.Reputation, hit.Source)
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rq.reputation = append(rq.reputation, hit)
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rq.h.metrics.ReputationHit(hit.Source)
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rq.h.alerts.Raise(alerts.Alert{
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Event: alerts.EventReputationHit,
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Host: rq.site,
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Client: rq.client,
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Netblock: rq.h.clientGroup(rq.client),
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ASN: rq.line.ASN,
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ASName: rq.line.ASName,
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Country: rq.line.Country,
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Reason: reason,
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Detail: detail,
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})
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}
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