clawbot
aede434f6a
check / check (push) Successful in 6m30s
The request log's `action` values now say what they mean, as sneak named them: `request_header_too_large`, `client_is_rate_limited`, `blocked_by_block_rule` and `client_denied`, with no aliases. `banned` splits into `temporarily_banned` and `permanently_banned`, by whether the ban runs out. When a permanent ban also covers a client, that ban is the one reported. Trips a reader: a request over a rate limit stays `client_is_rate_limited` even when the ban it makes is permanent. Disclosure: the offence key `rule_blocked` is renamed in `clients.json` too, so an existing file holding it stops the start and must be removed. Its `version` stays 1. Model: opus-5-5
51 lines
1.5 KiB
Go
51 lines
1.5 KiB
Go
package discriminator
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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(_ context.Context, rq *request, now time.Time) *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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