5 Commits

Include renames

Author	SHA1	Message	Date
clawbot	c87bcca6e6	Take in an admin's edits of the state files while running (closes #68) ... smallwebwaf watches SWWAF_STATE_DIR with fsnotify and takes in a saved edit of a state file in place of what it held. It knows its own writes by the SHA-256 of what it last read or wrote; each write first takes in an edit made since. An edit that does not parse is renamed to <name>.bad at the next write. Each edit taken in or set aside is logged and counted. Every ban on a netblock is checked, and the next ban is worked out from the one that ended last. README.md says how to add and lift a ban. Judgement call: a broken edit is set aside at the next write, since an editor's file can be read half written. Model: opus-5-5	2026-10-06 12:02:17 +00:00
clawbot	cff385af41	Observe mode: log what would be refused, refuse nothing (closes #78) ... SWWAF_MODE (default enforce) takes enforce or observe. In observe mode a request that SWWAF_DENY_NETS, a ban, the country lists or a rate limit would refuse is passed to the app, and its log line names that refusal in would_action. The size and time limits and the 401 still apply. A broken limit makes no ban; bans read from bans.json are kept but refuse nothing, and Ledger.Find reads them without counting a refusal in their notes. Judgement call: in observe mode a broken limit does not reset the client's counters, since the reset comes with the ban. Judgement call: a request a ban would refuse keeps ban_expires. Model: opus-5-5	2026-10-06 13:04:43 +02:00
clawbot	234c5eac60	Serve Prometheus metrics behind SWWAF_METRICS_TOKEN (closes #23) ... GET /_smallwebwaf/metrics answers in the Prometheus text format for a request carrying SWWAF_METRICS_TOKEN, 401 without it and 404 while it is unset. Every request under /_smallwebwaf/ but the health check now goes through the checks and is answered where it would be forwarded, 404 for any path but the metrics, so none reaches the app. In the client's history a 401 counts as refused, the metrics and the 404s as neither. SWWAF_METRICS_TOP_N bounds the series by country, the rest counted as other. Deviation: go.mod and go.sum written by hand, as go runs only through make. Deviation: no metrics yet for state files read again after an edit or edits set aside; that work is not merged. Model: opus-5-5	2026-10-06 11:40:27 +02:00
clawbot	df2c5042d2	Keep the bans, the clients and GeoJS's answers in state files (closes #17) ... smallwebwaf now copies its state to bans.json, clients.json and lookups.json in SWWAF_STATE_DIR, as "Persistent state" in SPEC.md describes, and reads them back at start, so a restart lifts no ban and gives no client a fresh allowance. Each client gains a history, and a ban's notes count the netblock's requests. bans.json is written SWWAF_STATE_WRITE_DELAY after a ban, and every file every SWWAF_STATE_COUNTER_INTERVAL and at the stop. A ban read back is masked to its netblock and refuses every client in it. A file that does not parse, an unknown version, an entry without a field it needs, or an unwritable directory stops the start. Deviation: no AS number or name, and no ban cause, reason or lifting yet. Model: opus-5-5	2026-10-06 08:31:52 +02:00
clawbot	73ca94f850	Ban the netblock of a client that breaks a rate limit, in memory (closes #18) ... A request over a rate limit is refused with SWWAF_BAN_RESPONSE and bans the client's netblock: an hour at first, three times the last ban when broken again within a day of its end, permanent past seven days. The ban ledger in internal/bans is checked after the static lists and before the lookup, and the requests it refuses are not counted. A ban resets the client's counters and carries notes holding the request that broke the limit, as SPEC.md now says. At most SWWAF_MAX_BANS are held. SWWAF_BAN_RESPONSE also answers SWWAF_DENY_NETS and the country lists. Judgement call: the six ban settings cannot be off. Judgement call: a permanent ban's ban_expires is "permanent". Model: opus-5-5	2026-10-06 05:29:03 +02:00