screentinker/server
ScreenTinker 792013e36c Record auth rate-limit rejections so they can be measured
The auth limiters are app.use middleware that return 429 before the handler
that writes activity_log, so a rejection left no trace anywhere — the limit
suppressed the record of itself. Four production IPs sit at exactly ten logins
a minute and there was no way to tell whether that is one attacker or an office
whose staff share an egress address, which is the difference between the
limiter working and the limiter locking out customers.

The rejection count does not answer that. The number of distinct accounts per
IP does: one account hammered is the limiter doing its job, several accounts
each denied a few times is a shared egress. Both are now recorded, and a
platform-admin-only endpoint reads the tally back.

Identifiers are salted-hashed with a per-process salt and only ever counted, so
this cannot accumulate into a roster of a customer's addresses. Memory is
bounded per key and overall, and says when a count was capped rather than
silently undercounting.

Behaviour is unchanged: same status, same body, and the recording is wrapped so
telemetry can never break the limiter. A test asserts ten through then 429 with
the identical response shape, since a diagnostic that alters what it measures
is worse than none.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Uaeo9MvzKoyXuN6ZsbhtkL
2026-07-28 14:01:00 -05:00
..
config fix(logging): gate CF-Connecting-IP on a Cloudflare peer, not any trusted proxy 2026-07-26 10:23:04 -05:00
db Alert once per outage instead of once per dedup window 2026-07-28 12:50:14 -05:00
lib Record auth rate-limit rejections so they can be measured 2026-07-28 14:01:00 -05:00
middleware Merge branch 'fix/recovery-grants' into release/auth-campaign 2026-07-26 16:22:59 -05:00
player Recover an unpaired player without needing a keyboard 2026-07-28 13:17:22 -05:00
routes Record auth rate-limit rejections so they can be measured 2026-07-28 14:01:00 -05:00
scripts fix(content+android): rotation-aware media — portrait upright on dashboard AND player (#170) (#172) 2026-07-12 22:05:11 -05:00
services Alert once per outage instead of once per dedup window 2026-07-28 12:50:14 -05:00
test Record auth rate-limit rejections so they can be measured 2026-07-28 14:01:00 -05:00
ws Only store a device fingerprint against a device that still exists 2026-07-28 13:54:40 -05:00
.gitignore feat(email): Microsoft Graph send + alert spam protection + preferences UI 2026-05-12 18:16:40 -05:00
config.js feat(email): SMTP transport as an alternative to Microsoft Graph [#173] (#179) 2026-07-13 15:56:22 -05:00
package-lock.json chore(release): v1.9.20 2026-07-28 13:18:21 -05:00
package.json chore(release): v1.9.20 2026-07-28 13:18:21 -05:00
server.js Record auth rate-limit rejections so they can be measured 2026-07-28 14:01:00 -05:00
version.js chore(version): single-source VERSION, env-configurable data paths, bump tooling 2026-06-10 12:56:03 -05:00