Photo Directory: refuse submitted shortcodes instead of editing them out - #875
Photo Directory: refuse submitted shortcodes instead of editing them out#875obenland wants to merge 3 commits into
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`strip_shortcodes()` is a single pass, and a single pass can leave a shortcode in place. It unwraps an escaped `[[tag]]` into a live `[tag]`, and removing one shortcode can splice the surrounding text into another, so `[gal[caption]lery ids="1"]` comes back as a live `[gallery ids="1"]`. Both survived the strip the submitted fields gained in [a3bbd33]. Check the submitted title, description and caption in `validate_upload_form()` instead, where the form already refuses a submission and explains why. Detection has neither failing: matching a shortcode cannot manufacture one, and the submitter is told rather than having their wording quietly rewritten. `sanitize_submitted_description()` goes back to sanitizing markup only. It runs on `fu_before_create_post`, which the upload cannot reach without passing the check above. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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Included review availability: Your plan provides up to 8 included reviews per hour; 5 remain after this review. 📝 WalkthroughWalkthroughThe upload flow rejects shortcodes in submitted title, content, and excerpt fields before sanitization. Sanitization preserves shortcodes in accepted values. ChangesPhoto Directory Upload Validation
Estimated code review effort: 2 (Simple) | ~10 minutes Merge Risk: ⚪ Minimal · up to Uploads now reject registered shortcode syntax in submitted titles, descriptions, and captions while preserving ordinary bracketed prose. No concrete merge-blocking risk remains. 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
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🟡 Changes recommended
The new shortcode validation can fatally error on array-valued $_POST input (type confusion) when calling preg_match(), which should be guarded before approval.
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Pull request overview
This PR updates the Photo Directory upload intake flow to refuse submissions containing registered shortcode syntax in the title/description/caption, rather than attempting to strip shortcodes during sanitization (which can unintentionally “manufacture” shortcodes via strip_shortcodes() edge cases).
Changes:
- Add upload-form validation to reject
post_title,post_content, andpost_excerptwhen shortcode syntax is detected. - Remove
strip_shortcodes()fromsanitize_submitted_description(), returning it to markup-only sanitization. - Add a dedicated rejection message (
shortcode-in-text) to Frontend Uploader response notices.
File summaries
| File | Description |
|---|---|
| wordpress.org/public_html/wp-content/plugins/photo-directory/inc/uploads.php | Adds shortcode detection + rejection at validation time, restores plain sanitization on intake, and wires a user-facing rejection notice. |
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Inline comments:
In
`@wordpress.org/public_html/wp-content/plugins/photo-directory/inc/uploads.php`:
- Line 710: Validate that $submitted is a string before the truthy check and
preg_match() in the submitted-field handling flow, rejecting non-empty array
values while preserving shortcode matching for valid strings. Add regression
coverage for array values in post_title, post_content, and post_excerpt.
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wordpress.org/public_html/wp-content/plugins/photo-directory/inc/uploads.php
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A submitted field can arrive as an array — `post_title[]=x` — and `wp_unslash()` hands the array straight back. It is truthy, so it reached `preg_match()`, which takes a string subject and raises a TypeError on PHP 8, turning a malformed submission into a fatal. Skip anything that is not a non-empty string. Nothing is lost by it: `sanitize_text_field()` stores an array as an empty string, so a field of that shape cannot carry shortcode syntax into the post in the first place. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
The skip is safe because Frontend Uploader guards every field it reads with `is_scalar()` and substitutes an empty string, so an array-shaped submission is discarded before `fu_before_create_post` runs. The comment credited `sanitize_text_field()` instead, which never sees the array. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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🟢 Approval recommended
The changes correctly shift shortcode handling from lossy sanitization to explicit validation, with only a minor optional performance tweak suggested.
Review details
Suppressed comments (1)
Previously missed (1) — in code that hasn't changed since the last review.
wordpress.org/public_html/wp-content/plugins/photo-directory/inc/uploads.php:718
get_shortcode_regex()builds a fairly heavy pattern; calling it inside the loop (and runningpreg_match()on every non-empty field) does unnecessary work for normal submissions. Cache the regex once and add a cheap pre-check (e.g.strpos( $submitted, '[' )) before running the full match.
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Follow-up to [a3bbd33], which ran the submitted fields through
strip_shortcodes().strip_shortcodes()is a single pass, and a single pass can leave a shortcode in place:[[tag]]into a live[tag]—strip_shortcode_tag()returnssubstr( $match, 1, -1 )forthat syntax by design.
[gal[caption]lery ids="1"]carries noshortcode until the inner
[caption]is taken out, at which point the remainder joins into a live[gallery ids="1"].Both survive the strip, so a submission can store a shortcode that was never in it.
validate_upload_form()now refuses a title, description or caption containing shortcode syntax, which is where theform already turns a submission away and explains why. Matching a shortcode cannot manufacture one, so detection has
neither failing, and the submitter is told rather than having their wording quietly rewritten.
sanitize_submitted_description()goes back to sanitizing markup only. It runs onfu_before_create_post, which anupload cannot reach without passing
fu_should_process_content_uploadand therefore the check above.Bracketed prose is unaffected —
[developers]is not a registered shortcode, so nothing matches it.Complements #860, which renders the stored description as text. That is the output side and also covers photos
submitted before either change; this is the intake side.
Testing steps
Alt [[caption width="1" caption="x"]y[/caption]] text. The submission isrefused with a message about shortcodes; on
trunkit stores a live[caption …].Alt [gal[caption]lery ids="1"] textin the title. Same result.A photo of [developers] at work. It is accepted and stored unchanged.🤖 Generated with Claude Code
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