sneak
7f8a59de04
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script/fmt now runs golines -m 77 after gofmt, repeating golines until it changes nothing, since one pass can leave a line the next splits. script/fmt-check fails when either would change a file. script/bootstrap installs golines v0.13.0 with go install, pinned to its commit, and checks the installed version with go version -m. The tree is reformatted. The longer lines this makes are fixed by hand: nolint directives moved onto their own line above the statement, one string split, and 20 functions over funlen's 80 lines shortened or split, RunWAF and limitPercentages among them. Model: opus-5-5
55 lines
1.5 KiB
Go
55 lines
1.5 KiB
Go
package waf
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// The heuristic crowdsec. It reads SWW_CROWDSEC_LAPI_URL, and the decisions
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// through the reputation lists.
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import (
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"context"
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"time"
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"sneak.berlin/go/smallwebwaf/internal/bans"
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"sneak.berlin/go/smallwebwaf/internal/config"
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"sneak.berlin/go/smallwebwaf/internal/reputation"
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"sneak.berlin/go/smallwebwaf/internal/requestlog"
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)
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// crowdSec refuses a request when a decision of the CrowdSec decision list on
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// the client is in force at now. It then adds the tag crowdsec, notes the
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// list, as noteHit does, and bans the client until that decision ends. Its
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// figures are the decision's scenario and when it ends.
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type crowdSec struct{}
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func (crowdSec) name() string { return "crowdsec" }
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func (crowdSec) check(
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_ context.Context,
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rq *request,
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now time.Time,
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) *verdict {
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decision, listed := rq.crowdSecDecisionInForce(now)
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if !listed {
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return nil
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}
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rq.addTag(config.CrowdSecTag)
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rq.noteHit(bans.ReputationHit{Source: rq.h.config.CrowdSecDecisionsURL},
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"listed by the CrowdSec decision list")
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return &verdict{
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action: rq.banForCrowdSec(now, decision),
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figures: map[string]any{
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"scenario": decision.Scenario,
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"expires": requestlog.FormatTime(decision.Expires),
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},
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}
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}
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// crowdSecDecisionInForce returns the decision of the CrowdSec decision list on
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// the client that is in force at now, and reports whether there is one, which
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// the heuristic crowdsec refuses the request for.
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func (rq *request) crowdSecDecisionInForce(
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now time.Time,
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) (reputation.Decision, bool) {
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return rq.h.lists.CrowdSecDecision(rq.client, now)
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}
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