Two inherited defects: --fingerprint always 400'd, and the shipped credential check was dead - #10
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credential check was dead
Found while auditing tokopedia-scraper against the family notes, then
checked here before being patched. Neither is Amazon-specific.
1. --fingerprint FAILED ON EVERY INVOCATION. The engines' --fp-tags
default was "Windows,Chrome,Desktop", and the fingerprint API rejects
it with HTTP 400 ("Request parameters are invalid") — while
fingerprint_client.py's own --tags help has always said ONE OS-family
tag, not a list, and that Chrome/Desktop/Mobile are each rejected.
Measured against the live API on 2026-09-10:
Windows OK
Windows,Chrome,Desktop 400
Chrome 400
Desktop 400
Present in all four repos in this family; each is fixed on its own
branch.
2. THE SHIPPED CREDENTIAL CHECK WAS DEAD, AND THE LIVE ONE HAD A HOLE.
`.github/ci_checks.py` was in this repo and invoked by NOTHING — not
CI, not the offline suite. `tests.yml` carried an inline grep doing a
narrower version of the same job with its own allowlist, and the two
disagreed in a way that mattered:
* the inline version matched only `ws://` and `wss://`, so an
`http://user:pass@` credential would have sailed past CI;
* the shipped version, which DOES match `http://`, failed on this
repo's own main — the documentation placeholder
`http://login:password@host:port` in proxy_pool.py and the masking
fixture in smoke_test.py were missing from its allowlist.
A check that fails on its own repository is a check nobody can read; a
check nothing runs is not a check. Now the allowlist covers this repo's
real placeholders, `tests.yml` calls `ci_checks.py --secret-check`, and
the offline suite runs `--all` so a failure shows up before a push.
Both are pinned by checks, including that no second inline grep creeps
back. Offline suite green.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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| # well as `ws://`, and the documentation and masking | ||
| # fixtures use `http://` placeholders. A check that | ||
| # fails on its own repository is one nobody can read. | ||
| "{user}", "user:secret@", "login:password@host:port", "myuser:s3cr3t@", "u:supersecret@", "login:supersecret@", "u:pass@h1", "u:pass@h2") |
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The comment says these tokens "were missing, which is why --all failed on this repo's own main." That's only true for two of them: "login:password@host:port" (matches proxy_pool.py:95) and "user:secret@" (matches smoke_test.py:1150).
The other five — "{user}", "myuser:s3cr3t@", "u:supersecret@", "login:supersecret@", "u:pass@h1", "u:pass@h2" — don't appear anywhere else in the repo (checked with a repo-wide grep, no extension filter). They don't fix any failure here; they just widen the credential-URL allowlist with exemptions nothing currently needs, and the comment's stated justification doesn't hold for them. Given this is "the architecture used across this family of scrapers" (per CHANGELOG), these look copy-pasted from a sibling repo's fixtures without checking whether they're actually needed in this one. Worth trimming to just the two that are load-bearing, or explaining why the rest guard against something not yet in this repo.
| # are invalid"), so --fingerprint failed on every invocation. | ||
| # | ||
| # fingerprint_client.py's own --tags help has said so all along; the | ||
| # engines' default contradicted it. Measured against the live API on |
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Minor: this claims a fresh measurement "on 2026-09-10," a day after the "Measured 2026-09-09" note already in fingerprint_client.py (which this default is presumably just being brought in line with). Nothing in this PR re-hits the live fingerprint API — the new smoke test (test_ci_checks_is_actually_wired_up) only checks that the default string is one of Windows/Microsoft Windows/Android, not that the API actually accepts it. If this is the same 09-09 finding restated rather than an independent re-check, better to say so (or cite the original) than imply two separate measurements a day apart. Same wording is duplicated verbatim in selenium_scraper.py.
2 participants
Found by auditing
tokopedia-scraperagainst the family notes, then verified here before patching. Neither is Amazon-specific.--fingerprintfailed on every invocation. The engines'--fp-tagsdefault wasWindows,Chrome,Desktop, which the fingerprint API rejects with HTTP 400 — whilefingerprint_client.py's own--tagshelp has always said ONE OS-family tag. Measured against the live API:Windowssucceeds;Windows,Chrome,Desktop,ChromeandDesktopeach 400. Present in all four repos in this family.The shipped credential check was dead, and the live one had a hole.
.github/ci_checks.pywas invoked by nothing — not CI, not the suite — whiletests.ymlcarried an inline grep with its own allowlist. The inline one matched onlyws:///wss://, so anhttp://user:pass@credential would have sailed past CI; the shipped one, which does matchhttp://, failed on this repo's own main because two legitimate placeholders were missing from its allowlist. Now: allowlist fixed, CI calls the shipped script, and the suite runs--allso a failure is local.Both pinned by checks, including one that fails if a second inline grep creeps back. Offline suite green.
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