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fix(withdrawal): end a raw-text region where the tag name ends - #316
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Two review findings that were left open on PRs already merged and shipped in 1.34.0. Both are valid against the current code. strip_non_markup() found the end of a <script>, <style>, <title>, <textarea> and friends with a plain substring search for "</" plus the name. That also matches a longer name: `</titlex>` closes <title>, `</stylex>` closes <style>. Everything after the false end is then handed back as live markup, so a marker sitting in inert text — text a browser renders as the title, never as an element — passes verification. The footer route is believed, this plugin stops rendering its own revisit widget, and the visitor is left with no way to withdraw consent. That is fail-open, in the one class whose stated contract is to fail closed, and it is the same outcome the whole verification exists to prevent. HTML5 ends a raw-text element only when the name is followed by whitespace, `/` or `>`. The match is now anchored to that boundary. Four cases cover it, one per raw-text element. Each one puts a REAL element carrying the marker after the fake closing tag, and that detail is the point: my first draft left the marker in loose text, where the DOM parser finds no attribute and the assertion passes whatever strip_non_markup() does — green and worthless. Control run against the old substring search: all four go red, and the case asserting that a genuine closing tag still ends the region stays green, so the fix cannot have made the region unbounded instead. Second finding, in the compact-layout test: `strpos( $dns_body, 'width:100%' )` also matches `min-width:100%` and `max-width:100%`, neither of which makes the Do-Not-Sell row span the wrapper — so the assertion could not catch the regression it was written for. It is anchored to a declaration boundary now. Demonstrated: against a body carrying `min-width:100%` the old check passes and the new one fails. Verified: 198 of 198 unit suites, 97/97 in the withdrawal runner and 97/97 in the compact-CSS runner, php -l clean, and the two E2E specs that exercise these paths green (withdrawal-path-verification 2 passed, mobile-compact-layout 6 passed).
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WalkthroughLa ricerca delle chiusure degli elementi raw-text ora richiede un delimitatore valido dopo il nome del tag. I test verificano chiusure false e valide. Un’asserzione CSS richiede che ChangesChiusure degli elementi raw-text
Verifica della dichiarazione CSS
Priority: ➖ Normal Estimated code review effort: 2 (Simple) | ~10 minutes Change: Bug fix Merge Risk: 🔵 Low · up to The fix closes the reported 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
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- 🪄 Fix CodeRabbit comments on this PR
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Review comments at @includes/class-withdrawal-path.php:
- Line 507: In the `$close_pattern` delimiter lookahead, replace `\s` with the
explicit permitted ASCII delimiters space, tab, newline, form feed, carriage
return, slash, and `>`, so vertical tab does not count as an HTML closing-tag
delimiter. Add a false-closing-tag test using `\x0B` and preserve the production
PHP route-check behavior.
Review comments at @tests/unit/test-mobile-compact-css-php.php:
- Line 179: Update the width assertion in the Do-Not-Sell test to require a
semicolon or end-of-string immediately after 100%, so values such as
width:100%junk do not pass.
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includes/class-withdrawal-path.phptests/unit/test-mobile-compact-css-php.phptests/unit/test-withdrawal-path-php.php
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ℹ️ No critical issues. One minor suggestion inline.
Reviewed changes
I reviewed the raw-text boundary fix in Withdrawal_Path::strip_non_markup() and the two test changes that come with it.
- Raw-text end tag anchored to the name boundary:
</NAMEnow has to be followed by whitespace,/or>, so</titlex>,</stylex>and similar no longer end the region early and leave inert text to be parsed as live markup. - Regression cases for each raw-text element: four negative cases each put a real marked
<a>after a fake closer. One positive case checks that a genuine</title>still ends the region. The cases can genuinely fail: each marker sits in a real element, so it only reaches the DOM check when the region ends too early. - Do-Not-Sell
width:100%assertion anchored:$dns_bodyis the content captured inside{…}, so(?:^|;)correctly rejectsmin-width:100%/max-width:100%.
I ran both unit files locally and they pass.
claude-opus-5-5 ｜ 𝕏
…tion Both reviewers found the same hole independently, and they are right. PCRE's `\s` matches the vertical tab; HTML's whitespace set does not. So `</title\x0B>` closed the raw-text region in my fix while a browser keeps reading title text — the same fail-open the change set out to close, reached with a less likely input. The delimiter set is now written out as the spec defines it: tab, LF, FF, CR, space, `/`, `>`. A case with \x0B joins the false closers, and the control run confirms it: back on `\s` that case goes red. The CSS assertion was only bounded at the front, so `width:100%junk` satisfied it — a value a browser discards, meaning the test could pass on a rule that sets no usable width. It now requires `;` or end of string after the value. Demonstrated: against `width:100%junk` the unbounded regex passes and the bounded one fails.
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✅ No new issues found.
Reviewed changes
I reviewed 10c03e5, which follows up on the vertical-tab finding and on CodeRabbit's trailing-boundary note.
- Spelled out the HTML whitespace set in the end-tag lookahead:
\sbecame[\t\n\f\r />], so</title\x0B>no longer closes the region. CR belongs in the set because the tokenizer turns CR into LF before it tokenizes. - Added a
\x0Bregression case: the case uses a double-quoted PHP string, so the byte really is a VT. It puts a real marked<a>after the fake closer, so it would go red against the old\spattern. - Bounded the
width:100%assertion on both sides: adding(?=;|$)stopswidth:100%junkfrom passing, along with themin-width/max-widthcases the first commit already handled.
At this head, test-withdrawal-path-php.php passes 98/98 and test-mobile-compact-css-php.php passes 97/97. I also spot-checked the pattern: it matches >, /, \r, \f and uppercase names, and it rejects \x0B and x.
claude-opus-5-5 ｜ 𝕏
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Two review comments were left unresolved on PRs that are already merged and shipped in 1.34.0 — one from CodeRabbit on #305, one from Pullfrog on #313. I only checked #314 thoroughly before publishing and assumed the earlier ones were clear because they were merged. That was an assumption, not a check. Both are valid against the current code.
A raw-text region that ends too early (shipped)
strip_non_markup()located the end of<script>,<style>,<title>,<textarea>and friends with a plain substring search for</plus the name. That matches a longer name too:</titlex>closes<title>,</stylex>closes<style>. Everything after the false end is handed back as live markup, so a marker sitting in inert text — text a browser renders as the title, never as an element — passes verification.The consequence is the one this class exists to prevent: the footer route is believed, the plugin stops rendering its own revisit widget, and the visitor is left with no way to withdraw consent. Fail-open, in the one class whose stated contract is to fail closed.
Reproduced before fixing:
HTML5 ends a raw-text element only when the name is followed by whitespace,
/or>. The match is anchored to that boundary now.About the tests
Four cases, one per raw-text element. Each puts a real element carrying the marker after the fake closing tag, and that detail is the whole point: my first draft left the marker in loose text, where the DOM parser finds no attribute and the assertion passes regardless of what
strip_non_markup()does — green and worthless. I caught it with the control run, which showed only 1 of 4 going red.Control run against the old substring search: all four go red. The case asserting that a genuine closing tag still ends the region stays green, so the fix cannot have made the region unbounded instead.
An assertion that could not catch its own regression
strpos( $dns_body, 'width:100%' )also matchesmin-width:100%andmax-width:100%, neither of which makes the Do-Not-Sell row span the wrapper. Anchored to a declaration boundary now. Demonstrated against a body carryingmin-width:100%: the old check passes, the new one fails.Does this need a 1.34.1?
The raw-text defect is in shipped code and its failure mode is a visitor with no withdrawal route, which is a compliance outcome rather than a cosmetic one. It needs a page whose raw-text element contains a
</name…>sequence with a>in it, which is uncommon but not contrived — a<script>holding a JSON string, a<textarea>with user-pasted markup, a CSS comment. I would rather ship it than sit on it, but that is a call to make rather than assume, so I have not bumped a version here.Verification
php -lclean across 404 fileswithdrawal-path-verification2 passed,mobile-compact-layout6 passedSummary by CodeRabbit
title,style,scriptetextarea, evitando che chiusure simili ma non valide attivino markup successivo.width: 100%, distinguendola damin-widthemax-width.