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
38 lines
1.1 KiB
Go
38 lines
1.1 KiB
Go
package discriminator
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// The heuristic trap_paths. It reads SWW_TRAP_PATHS.
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import (
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"context"
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"slices"
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"time"
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"sneak.berlin/go/smallwebwaf/internal/bans"
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"sneak.berlin/go/smallwebwaf/internal/rules"
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)
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// trapPaths refuses a request for a path in SWW_TRAP_PATHS: its path as a
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// path rule sees it, without the query, as sent or once percent-decoded, is one
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// of them. Such a request is a clear sign of attack, as a ban rule's match is:
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// it bans the client's netblock, or in observe mode raises the alert for the
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// ban it would have made. The ban's notes give the path as sent, and so does
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// its figure.
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type trapPaths struct{}
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func (trapPaths) name() string { return "trap_paths" }
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func (trapPaths) check(_ context.Context, rq *request, now time.Time) *verdict {
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path := rules.Path(rq.in)
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if !slices.Contains(rq.h.config.TrapPaths, path) &&
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!slices.Contains(rq.h.config.TrapPaths, rules.DecodeOnce(path)) {
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return nil
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}
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rq.attack = true
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return &verdict{
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action: rq.banForAttack(now, bans.Notes{TrapPath: path}),
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figures: map[string]any{"path": path},
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}
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}
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