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CaliBrain
ebb833a82c
A cookie that has been rejected was kept and presented again on every
later
request, so a single bad clearance could re-arm the challenge
indefinitely.
Cookie storage:
- Enforce expiry for every stored cookie, not just cf_clearance.
DDoS-Guard
domains have no cf_clearance, so the existing check never fired for them
and
expired cookies were replayed forever.
- Stop storing the per-check cookies __ddg8_/__ddg9_/__ddg10_ and
ddg_last_challenge. Captured live from Anna's Archive, these carry the
client
IP and the timestamp the check was issued (~40 min), versus ~1 year for
the
__ddg1_/__ddg2_/__ddgid_ clearance. Replaying an IP-bound token stops
describing the caller as soon as the egress IP changes, which is routine
behind a VPN.
Failure handling — every path that is rejected while carrying cookies
now
purges them, not just the redirect loop:
- 403 returned while presenting cookies.
- Cached-cookie attempt rejected, whether by status or by redirect loop.
- Factored the purge into _purge_clearance, guarded on a non-empty
hostname
since clear_cf_cookies("") means "every host" and would wipe clearance
for
sites that are working fine.
Also fix the search warm-up switches shipped inert in v1.3.8:
SEARCH_WARMUP_ENABLED and SEARCH_WARMUP_QUERY are not in the settings
registry, and config.get only consults the environment for keys it
knows, so
both always returned their defaults — the warm-up could not be turned
off or
retargeted. Read os.environ first.
Refs #1220. Deliberately not "Fixes": the reported failure could not be
reproduced on v1.3.8 from a stable IP (the reporter's own queries all
returned
200 on both the pre- and post-change builds), and the new purge paths
did not
fire in live testing because the failures arrive as redirect loops,
which were
already purged. These are correctness fixes with no measured effect on
that
issue. The underlying problem remains that Chrome-obtained cookies never
satisfy DDoS-Guard when replayed by requests, so every search still
re-solves.
Verified: 2542 unit tests pass; ruff, basedpyright and vulture clean;
e2e
platform baseline (10), full (6) and bypasser-external (5) all pass;
five
sequential live searches against Anna's Archive all returned 200 with
zero
"Exceeded 30 redirects".