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
42 lines
1.3 KiB
Go
42 lines
1.3 KiB
Go
package waf
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// The heuristic blocklists. It reads SWW_BLOCKLIST_ACTION, and the blocklists
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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/requestlog"
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)
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// blocklists notes the blocklists that list the client, as noteListed does,
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// and refuses the request when SWW_BLOCKLIST_ACTION is deny. Being limit, it
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// lowers the client's limits instead (see limitPercentages), and being log, it
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// does nothing more. Its figure is the blocklists that list the client.
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type blocklists struct{}
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func (blocklists) name() string { return "blocklists" }
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func (blocklists) check(_ context.Context, rq *request, _ time.Time) *verdict {
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listedBy := rq.h.lists.ListedBy(rq.client)
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rq.blocklisted = len(listedBy) > 0
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rq.noteListed(listedBy, "listed by a blocklist")
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if !rq.refusedByBlocklists(listedBy) {
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return nil
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}
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return &verdict{
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action: requestlog.ActionClientDenied,
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figures: map[string]any{"lists": listedBy},
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}
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}
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// refusedByBlocklists reports whether the heuristic blocklists refuses a
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// client, given listedBy, the blocklists that list it: it does when one lists
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// it and SWW_BLOCKLIST_ACTION is deny.
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func (rq *request) refusedByBlocklists(listedBy []string) bool {
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return len(listedBy) > 0 && rq.h.config.BlocklistAction == deny
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}
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