PluginProbe
xSpeed Cache: AI-Powered Performance Hub with MCP, Caching & CDN / 1.3.6
xSpeed Cache: AI-Powered Performance Hub with MCP, Caching & CDN v1.3.6
1.3.6 1.3.5 1.3.4 1.3.3 1.3.2 1.3.1 1.3.0 1.2.4 trunk 1.0.0 1.0.1 1.0.2 1.0.3 1.0.4 1.0.5 1.0.6 1.0.7 1.0.8 1.0.9 1.1.0 1.1.1 1.1.2 1.1.3 1.1.4 1.1.5 All 32 releases
← All changes | includes/class-minify-filters.php +1016 -77 1.3.0 → 1.3.6 View file →
@@ -82,8 +82,395 @@
82 82 self::$original_src = array();
83 83 }
84 84
85 85 /**
86 + * Does this tag (or attribute string) opt out of optimization?
87 + *
88 + * `data-no-optimize` / `data-no-minify` are the de-facto convention
89 + * consent managers and other plugins print so optimizers keep hands
90 + * off (Borlabs Cookie stamps both on its config script). The CSS
91 + * combine buffer has honored `data-no-optimize` from the start; the
92 + * JS paths did not, so a marked consent script was still minified
93 + * into a hashed cache file — and a stale copy of a legally relevant
94 + * consent config is a correctness problem, not a cosmetic one. (#456)
95 + *
96 + * @param string $tag A full tag, or just its attribute string.
97 + */
98 + public static function tag_opts_out( string $tag ): bool {
99 + return (bool) preg_match( '#\sdata-no-(?:optimize|minify)\b#i', $tag );
100 + }
101 +
102 + /**
103 + * Pristine tags as they looked before any of our transforms, keyed by
104 + * handle. See snapshot_tag() / revert_late_marked_tag().
105 + *
106 + * @var array<string,string>
107 + */
108 + private static $pristine_tag = array();
109 +
110 + /**
111 + * Priority for the late opt-out re-check. Past Borlabs' ScriptBlocker
112 + * at 999 — the highest stamper we have seen in the wild — so the
113 + * marker has certainly landed by the time we look. (#469)
114 + */
115 + private const LATE_OPT_OUT_PRIORITY = 1000;
116 +
117 + /**
118 + * The priority the late opt-out re-check runs at.
119 + *
120 + * A site whose stamper hooks even later can move ours past it.
121 + */
122 + public static function late_opt_out_priority(): int {
123 + /**
124 + * Filter the priority of xSpeed's late data-no-optimize re-check.
125 + *
126 + * @param int $priority Default 1000.
127 + */
128 + return (int) apply_filters( 'xspeed_late_opt_out_priority', self::LATE_OPT_OUT_PRIORITY );
129 + }
130 +
131 + /**
132 + * Filter: `script_loader_tag`, priority 9 — remember the tag before we
133 + * touch it, so a marker stamped later can still be honored.
134 + *
135 + * Our three opt-out-aware transforms run at 15/20/30. A plugin that
136 + * stamps `data-no-optimize` AFTER them is invisible to all three:
137 + * Borlabs Cookie stamps at priority 100, so its consent config was
138 + * still minified into a hashed cache file AND delayed — the script
139 + * that has to run before anything else on the page ran only on first
140 + * interaction. Snapshotting here is what lets the late pass put the
141 + * original back verbatim, rather than trying to unpick each transform
142 + * in reverse. (#469)
143 + *
144 + * @param string $tag
145 + * @param string $handle
146 + * @param string $src
147 + */
148 + public static function snapshot_tag( $tag, $handle, $src ): string {
149 + if ( is_string( $tag ) && '' !== $tag && '' !== (string) $handle ) {
150 + self::$pristine_tag[ (string) $handle ] = $tag;
151 + }
152 + return (string) $tag;
153 + }
154 +
155 + /**
156 + * Filter: `script_loader_tag`, priority `LATE_OPT_OUT_PRIORITY` — hand
157 + * back the untouched tag when a late filter stamped an opt-out marker
158 + * after our transforms had already run.
159 + *
160 + * The priority has to clear the stamper, not merely the transforms:
161 + * Borlabs stamps at 100 and Borlabs' own script blocker at 999, so an
162 + * earlier hook reads a tag whose marker has not landed yet. PHP_INT_MAX
163 + * would be unfriendly to a site that legitimately wants the last word,
164 + * so this sits just past the highest stamper we know of and is
165 + * filterable. Reverting to the snapshot is deliberate: undoing
166 + * a delay rewrite in place would mean re-deriving `src` from
167 + * `data-xs-src` and stripping markers, and #273 is a standing reminder
168 + * that regex-editing these attributes in reverse goes wrong quietly.
169 + *
170 + * The pristine tag still carries whatever priority-10 filters did to
171 + * it, so only OUR changes are dropped. (#469)
172 + *
173 + * @param string $tag
174 + * @param string $handle
175 + * @param string $src
176 + */
177 + public static function revert_late_marked_tag( $tag, $handle, $src ): string {
178 + if ( ! is_string( $tag ) || '' === $tag || ! self::tag_opts_out( $tag ) ) {
179 + return (string) $tag;
180 + }
181 + $handle = (string) $handle;
182 + $pristine = isset( self::$pristine_tag[ $handle ] ) ? self::$pristine_tag[ $handle ] : '';
183 + if ( '' !== $pristine && $pristine !== $tag ) {
184 + // The marker is on the tag we were handed, not on the snapshot,
185 + // so carry it — and everything else the late filter set in the
186 + // same pass — over. A consumer reading the rendered HTML (or
187 + // our own buffer passes) must still see the opt-out it asked
188 + // for.
189 + $tag = self::copy_late_attributes( $tag, $pristine, $handle );
190 + }
191 + // The snapshot was taken on `script_loader_tag`, by which point
192 + // `script_loader_src` (priority 10) had ALREADY swapped in the
193 + // hashed cache URL — so reverting the tag alone still leaves the
194 + // minified src behind, which is the half the client actually
195 + // reported. Undo that here too, using the URL rewrite_script()
196 + // recorded. (#469)
197 + return self::restore_marked_script_src( $tag, $handle, self::current_src( $tag, (string) $src ) );
198 + }
199 +
200 + /**
201 + * The src currently on a tag, falling back to the one WordPress passed.
202 + *
203 + * After a revert the tag carries the snapshot's src, which is not
204 + * necessarily the `$src` argument this late in the chain.
205 + *
206 + * @param string $tag Tag to read.
207 + * @param string $fallback Value to use when the tag has no src.
208 + */
209 + private static function current_src( string $tag, string $fallback ): string {
210 + $open = self::open_tag_offsets( $tag );
211 + if ( null !== $open
212 + && preg_match( '#(?<![-\w])src\s*=\s*["\']([^"\']*)["\']#i', $open['attrs'], $m ) ) {
213 + return $m[1];
214 + }
215 + return $fallback;
216 + }
217 +
218 + /**
219 + * Carry the attributes a late filter added onto the snapshot tag.
220 + *
221 + * Copying only `data-no-*` would silently drop the rest of what the
222 + * stamper set in the same pass. Borlabs adds `data-cfasync="false"`
223 + * alongside its markers — the attribute that keeps Cloudflare Rocket
224 + * Loader off the consent config, i.e. the same class of breakage this
225 + * fix exists to prevent, reintroduced by the fix itself. So diff the
226 + * attribute names and bring over every one the snapshot lacks.
227 + *
228 + * Our own transform markers are excluded: they are what we are
229 + * reverting, and re-adding `data-xs-delay` would re-delay the script.
230 + *
231 + * @param string $from Tag as the late filter left it.
232 + * @param string $to Snapshot tag to stamp onto.
233 + */
234 + private static function copy_late_attributes( string $from, string $to, string $handle ): string {
235 + $late_tags = self::open_tags( $from );
236 + $to_tags = self::open_tags( $to );
237 + if ( empty( $late_tags ) || empty( $to_tags ) || count( $late_tags ) !== count( $to_tags ) ) {
238 + // Counts differ when a stamper/blocker injected or replaced a
239 + // tag inside the concatenated string, or a transform dropped an
240 + // inline block. Positional pairing is meaningless then — but
241 + // returning the bare snapshot would silently strip the opt-out,
242 + // and the buffer passes would re-optimize an unmarked tag: #469
243 + // again, on the mismatch path. Over-marking merely leaves a tag
244 + // unoptimized, so stamp the protective attributes onto every
245 + // snapshot tag instead. (#470)
246 + return self::stamp_protective_attributes( $from, $to, $to_tags );
247 + }
248 + // Pair the tags positionally and stamp each one from its own
249 + // counterpart. A stamper runs over the whole concatenated string
250 + // and may mark several of the tags in it; collapsing that onto one
251 + // tag would strip the opt-out from the others, and the buffer
252 + // passes re-test `tag_opts_out()` per tag, so an unmarked sibling
253 + // is free to be re-optimized downstream — #469 again, one pass
254 + // later. (#469)
255 + $out = $to;
256 + // Right to left: an earlier splice would shift every later offset.
257 + for ( $i = count( $to_tags ) - 1; $i >= 0; $i-- ) {
258 + $add = self::late_attribute_delta( $late_tags[ $i ]['attrs'], $to_tags[ $i ]['attrs'], $handle );
259 + if ( '' !== $add ) {
260 + $out = substr_replace( $out, $add, $to_tags[ $i ]['attrs_end'], 0 );
261 + }
262 + }
263 + return $out;
264 + }
265 +
266 + /**
267 + * Fallback when the late tag and the snapshot cannot be paired
268 + * positionally: copy only the attributes that protect the script from
269 + * optimizers — the opt-out markers plus `data-cfasync` — onto every
270 + * snapshot tag missing them. Values are taken as the stamper wrote
271 + * them on the late tag. (#470)
272 + *
273 + * @param string $from Tag as the late filter left it.
274 + * @param string $to Snapshot tag to stamp onto.
275 + * @param array $to_tags open_tags() result for $to.
276 + */
277 + private static function stamp_protective_attributes( string $from, string $to, array $to_tags ): string {
278 + $protect = array();
279 + foreach ( array( 'data-no-optimize', 'data-no-minify', 'data-cfasync' ) as $name ) {
280 + if ( preg_match(
281 + '#\s(' . preg_quote( $name, '#' ) . ')(\s*=\s*(?:"[^"]*"|\'[^\']*\'|[^\s>]*))?#i',
282 + $from,
283 + $m
284 + ) ) {
285 + $protect[ $name ] = ' ' . $name . ( isset( $m[2] ) ? $m[2] : '' );
286 + }
287 + }
288 + if ( empty( $protect ) ) {
289 + return $to;
290 + }
291 + $out = $to;
292 + // Right to left: an earlier splice would shift every later offset.
293 + for ( $i = count( $to_tags ) - 1; $i >= 0; $i-- ) {
294 + $add = '';
295 + foreach ( $protect as $name => $attr ) {
296 + if ( ! preg_match( '#\s' . preg_quote( $name, '#' ) . '\b#i', $to_tags[ $i ]['attrs'] ) ) {
297 + $add .= $attr;
298 + }
299 + }
300 + if ( '' !== $add ) {
301 + $out = substr_replace( $out, $add, $to_tags[ $i ]['attrs_end'], 0 );
302 + }
303 + }
304 + return $out;
305 + }
306 +
307 + /**
308 + * The attributes present on the late tag but not the snapshot, minus
309 + * the ones OUR transforms put there for this handle.
310 + *
311 + * Only attributes recorded in $our_late_attrs are dropped — a blanket
312 + * defer/type skip threw away a defer the STAMPER set in the same pass
313 + * as its marker. Themify prints main.js with defer + data-no-optimize
314 + * together, and its config rides a deferred data: URI script printed
315 + * just before it; stripping the theme's defer made main.js
316 + * parser-blocking, so it ran ahead of its config and the theme died
317 + * with "themify_vars is not defined". `src` is still never copied:
318 + * it belongs to the snapshot, and restore_marked_script_src() owns
319 + * undoing a minified URL.
320 + *
321 + * @param string $late_attrs Attribute string from the transformed tag.
322 + * @param string $to_attrs Attribute string from the snapshot tag.
323 + * @param string $handle Script handle the tags belong to.
324 + */
325 + private static function late_attribute_delta( string $late_attrs, string $to_attrs, string $handle ): string {
326 + $pattern = '#\s([-\w:]+)(?:\s*=\s*(?:"[^"]*"|\'[^\']*\'|[^\s>]*))?#';
327 + if ( ! preg_match_all( $pattern, $late_attrs, $late, PREG_SET_ORDER ) ) {
328 + return '';
329 + }
330 + $have = array();
331 + if ( preg_match_all( $pattern, $to_attrs, $existing, PREG_SET_ORDER ) ) {
332 + foreach ( $existing as $attr ) {
333 + $have[ strtolower( $attr[1] ) ] = true;
334 + }
335 + }
336 + $add = '';
337 + foreach ( $late as $attr ) {
338 + $name = strtolower( $attr[1] );
339 + if ( isset( $have[ $name ] ) || 'src' === $name || isset( self::$our_late_attrs[ $handle ][ $name ] ) ) {
340 + continue;
341 + }
342 + if ( 0 === strpos( $name, 'data-xs-' ) ) {
343 + continue;
344 + }
345 + $add .= $attr[0];
346 + }
347 + return $add;
348 + }
349 +
350 + /**
351 + * Attribute names OUR transforms added in this request, keyed by
352 + * handle: defer_script_tag() records `defer`, delay_script_tag()
353 + * records `type` when it parks an inline block. Copying one of these
354 + * from the late tag back onto the snapshot would re-apply the very
355 + * transform the revert is undoing — but the same names coming from a
356 + * STAMPER are the author's intent and must survive, so the skip is
357 + * per-handle, never by name alone. `data-xs-*` is handled by prefix
358 + * separately. (#469)
359 + *
360 + * @var array<string,array<string,true>>
361 + */
362 + private static $our_late_attrs = array();
363 +
364 + /**
365 + * Locate the opening `<script>` that carries the src, falling back to
366 + * the last one when none does.
367 + *
368 + * WP_Scripts::do_item() hands `script_loader_tag` the concatenation of
369 + * before_inline + external + after_inline, so the FIRST `<script` is
370 + * routinely an inline block rather than the asset — the same trap
371 + * #234 fixed for defer and #273 for delay. Scanning attribute-wise
372 + * also means a quoted value containing `>` (an `onerror` guard, a JSON
373 + * payload) cannot truncate the tag the way `[^>]*` did. (#469)
374 + *
375 + * @param string $tag Full tag string.
376 + * @return array{attrs:string,attrs_end:int}|null
377 + */
378 + private static function open_tag_offsets( string $tag ): ?array {
379 + $tags = self::open_tags( $tag );
380 + $fallback = null;
381 + foreach ( $tags as $found ) {
382 + if ( preg_match( '#(?<![-\w])src\s*=#i', $found['attrs'] ) ) {
383 + return $found;
384 + }
385 + $fallback = $found;
386 + }
387 + return $fallback;
388 + }
389 +
390 + /**
391 + * Every well-formed opening `<script>` in the string, in order.
392 + *
393 + * @param string $tag Full tag string.
394 + * @return array<int,array{attrs:string,attrs_end:int}>
395 + */
396 + private static function open_tags( string $tag ): array {
397 + if ( ! preg_match_all( '#<script\b#i', $tag, $m, PREG_OFFSET_CAPTURE ) ) {
398 + return array();
399 + }
400 + $found = array();
401 + foreach ( $m[0] as $hit ) {
402 + $start = (int) $hit[1] + strlen( $hit[0] );
403 + $end = self::scan_open_tag_end( $tag, $start );
404 + if ( null === $end ) {
405 + continue;
406 + }
407 + $found[] = array(
408 + 'attrs' => substr( $tag, $start, $end - $start ),
409 + 'attrs_end' => $end,
410 + );
411 + }
412 + return $found;
413 + }
414 +
415 + /**
416 + * Offset of the `>` closing an opening tag, skipping any that sit
417 + * inside a quoted attribute value. Null when the tag is unterminated.
418 + *
419 + * @param string $tag Full tag string.
420 + * @param int $offset Index just past `<script`.
421 + */
422 + private static function scan_open_tag_end( string $tag, int $offset ): ?int {
423 + $len = strlen( $tag );
424 + $quote = '';
425 + for ( $i = $offset; $i < $len; $i++ ) {
426 + $char = $tag[ $i ];
427 + if ( '' !== $quote ) {
428 + if ( $char === $quote ) {
429 + $quote = '';
430 + }
431 + continue;
432 + }
433 + if ( '"' === $char || "'" === $char ) {
434 + $quote = $char;
435 + continue;
436 + }
437 + if ( '>' === $char ) {
438 + // A self-closing `/>` keeps the slash out of the attributes.
439 + return ( $i > $offset && '/' === $tag[ $i - 1 ] ) ? $i - 1 : $i;
440 + }
441 + }
442 + return null;
443 + }
444 +
445 + /**
446 + * Filter: `script_loader_tag`, priority 15 — undo the minify-cache
447 + * rewrite for a script whose printed tag opts out.
448 + *
449 + * The src rewrite happens on `script_loader_src` (priority 10), long
450 + * before any plugin's own `script_loader_tag` filter can stamp
451 + * `data-no-minify` onto the tag — so the marker arrived too late to
452 + * prevent the rewrite. This runs after the filters that stamp at the
453 + * default priority 10 and swaps the hashed cache URL back to the
454 + * recorded original. A marker stamped later than our transforms is
455 + * caught by revert_late_marked_tag() in the late pass instead. (#469)
456 + *
457 + * @param string $tag
458 + * @param string $handle
459 + * @param string $src
460 + */
461 + public static function restore_marked_script_src( $tag, $handle, $src ): string {
462 + if ( ! is_string( $tag ) || '' === $tag || ! self::tag_opts_out( $tag ) ) {
463 + return (string) $tag;
464 + }
465 + $original = self::original_src( (string) $handle );
466 + if ( '' === $original || '' === (string) $src || false === strpos( $tag, (string) $src ) ) {
467 + return $tag;
468 + }
469 + return str_replace( (string) $src, $original, $tag );
470 + }
471 +
472 + /**
86 473 * Does a user-supplied target match this script?
87 474 *
88 475 * A target is either a script handle (exact) or a URL substring. The
89 476 * URL is checked against BOTH the current src and the pre-minify src,
@@ -132,8 +519,12 @@
132 519 // bundle's <script> tag intact so the dashboard mounts.
133 520 if ( self::skip_in_non_frontend_context() ) {
134 521 return $tag;
135 522 }
523 + // The author asked every optimizer to leave this tag alone.
524 + if ( self::carries_optimizer_opt_out( $tag ) ) {
525 + return $tag;
526 + }
136 527 if ( '' === (string) $src ) {
137 528 return $tag;
138 529 }
139 530 if ( self::is_excluded_script( (string) $handle, (string) $src ) ) {
@@ -138,8 +529,12 @@
138 529 }
139 530 if ( self::is_excluded_script( (string) $handle, (string) $src ) ) {
140 531 return $tag;
141 532 }
533 + // The tag itself asked to be left alone. (#456)
534 + if ( self::tag_opts_out( $tag ) ) {
535 + return $tag;
536 + }
142 537 // Inline code elsewhere on the page reads this handle (or something
143 538 // it depends on). Inline blocks never defer, so deferring this one
144 539 // would run the consumer first. Defer only — delay is an opt-in
145 540 // target list, where the user has named the script deliberately.
@@ -163,9 +558,15 @@
163 558 // dependent that touches a global its dependency defines. (#234)
164 559 //
165 560 // The lookahead scans only within the tag (`[^>]*`) for ` src=`, so
166 561 // an inline `<script id="…-js-before">` can never match.
167 - return (string) preg_replace( '#<script\b(?=[^>]*\ssrc\s*=)#i', '<script defer="defer"', $tag, 1 );
562 + $deferred = (string) preg_replace( '#<script\b(?=[^>]*\ssrc\s*=)#i', '<script defer="defer"', $tag, 1 );
563 + if ( $deferred !== $tag ) {
564 + // Remember that THIS defer is ours, so the late opt-out revert
565 + // drops it — and only it, never a stamper's own defer.
566 + self::$our_late_attrs[ (string) $handle ]['defer'] = true;
567 + }
568 + return $deferred;
168 569 }
169 570
170 571 /**
171 572 * Filter: `script_loader_tag` — rewrite src= to data-xs-src= so the
@@ -184,14 +585,41 @@
184 585 }
185 586 if ( self::skip_in_non_frontend_context() ) {
186 587 return $tag;
187 588 }
188 - if ( self::is_excluded_script( (string) $handle, (string) $src ) ) {
589 + // The author asked every optimizer to leave this tag alone.
590 + if ( self::carries_optimizer_opt_out( $tag ) ) {
189 591 return $tag;
190 592 }
593 + if ( self::is_excluded_script( (string) $handle, (string) $src, true ) ) {
594 + return $tag;
595 + }
596 + // The tag itself asked to be left alone. (#456)
597 + if ( self::tag_opts_out( $tag ) ) {
598 + return $tag;
599 + }
191 600 if ( ! self::is_delay_target( (string) $handle, (string) $src ) ) {
192 601 return $tag;
193 602 }
603 + // Inline code elsewhere on the page reads this handle (or something
604 + // it depends on) — same registry walk defer uses. Delaying it runs
605 + // the consumer at parse time against a global that arrives on first
606 + // interaction: `wp_add_inline_script( 'jquery-ui-core',
607 + // 'jQuery.uiBackCompat…', 'before' )` throws "jQuery is not defined"
608 + // the moment jquery-core is delayed. A handle the user NAMED in
609 + // delay_js_targets is still delayed — an explicit entry is the user
610 + // saying they know the inline consumer is safe to break or absent.
611 + if ( isset( self::inline_bound_handles()[ (string) $handle ] )
612 + && ! self::is_user_named_target( (string) $handle, (string) $src )
613 + // Smart Delay inverts this protection: the handle is delayed and
614 + // its own before/after snippets are parked WITH it (see
615 + // park_smart_inline()), so the consumer no longer runs against a
616 + // missing global — it replays after its provider, in page order.
617 + // On a builder page nearly every script is inline-bound, which is
618 + // why delay-all without this delayed almost nothing.
619 + && ! self::smart_delay_enabled() ) {
620 + return $tag;
621 + }
194 622 // A non-executable type means this tag is data, or is being held by
195 623 // somebody else on purpose. The buffer pass has always checked this;
196 624 // the enqueue path did not, so a consent-blocked or JSON-carrying
197 625 // handle could still be rewritten here. (#274)
@@ -232,9 +660,9 @@
232 660 // would win over a marker appended behind it and keep executing.
233 661 // A non-default original type is stashed in data-xs-type so the
234 662 // bootstrap can restore it on replay (#274 — type is what a script
235 663 // IS; a parked `type="module"` must come back as a module).
236 - $tag = (string) preg_replace_callback(
664 + $parked = (string) preg_replace_callback(
237 665 '#<script\b([^>]*)>#i',
238 666 static function ( array $m ): string {
239 667 return '<script' . self::park_type_attrs( $m[1] ) . '>';
240 668 },
@@ -240,9 +668,14 @@
240 668 },
241 669 $tag,
242 670 1
243 671 );
244 - return $tag;
672 + if ( $parked !== $tag ) {
673 + // The parked type is ours to drop on a late opt-out revert; an
674 + // author-set type sits on the snapshot and survives regardless.
675 + self::$our_late_attrs[ (string) $handle ]['type'] = true;
676 + }
677 + return $parked;
245 678 }
246 679
247 680 /**
248 681 * Script types the buffer pass must never touch. `<script>` carries
@@ -250,8 +683,104 @@
250 683 * consumers, importmaps must resolve before any module runs, and our
251 684 * own delayed-inline marker is already handled by the bootstrap.
252 685 * Rewriting any of these breaks the page or its metadata.
253 686 */
687 + /**
688 + * Attributes by which a script's own author tells optimizers to stand down.
689 + *
690 + * The report behind #275 also asked us to leave a script alone when its
691 + * author "already marked it to load late". Read literally that means
692 + * `defer`/`async`, and that reading is wrong twice over: `defer` is
693 + * stamped onto every enqueued script by our OWN Defer JS filter at
694 + * priority 20, before Delay JS sees it at 30 — so honouring it would
695 + * switch Delay JS off entirely on sites running both — and `async` is the
696 + * shape of gtag, GTM and every pixel loader, which is precisely the
697 + * payload Delay JS exists to postpone. `defer`/`async` say WHEN TO FETCH,
698 + * not "leave me alone".
699 + *
700 + * These attributes do say it. Each is an established opt-out honoured by
701 + * another optimizer — WP Rocket, LiteSpeed, Autoptimize, NitroPack,
702 + * Jetpack Boost — so an author who prints one has already declared that
703 + * no optimizer should touch this tag. Consent banners are the main
704 + * beneficiary, but the rule is general and needs neither a handle nor a
705 + * recognised URL, so it works identically on both passes.
706 + *
707 + * Two deliberate omissions:
708 + *
709 + * - `data-cfasync="false"` is a Cloudflare Rocket Loader opt-out, and
710 + * ad stacks (Mediavine, Ezoic, AdThrive) print it on exactly the
711 + * heavy loaders a site turns Delay JS on for. Honouring it would
712 + * un-delay the ads.
713 + * - `data-no-minify` is about minification, not execution timing.
714 + */
715 + private const OPT_OUT_ATTRIBUTES = array(
716 + 'nowprocket', // WP Rocket
717 + 'data-nowprocket', // WP Rocket
718 + 'data-no-optimize', // LiteSpeed
719 + 'data-noptimize', // Autoptimize
720 + 'data-no-defer', // used by several optimizers
721 + 'nitro-exclude', // NitroPack
722 + 'data-jetpack-boost', // Jetpack Boost (value "ignore")
723 + 'data-wpmeteor-nooptimize', // WP Meteor
724 + 'data-xs-nodelay', // ours
725 + );
726 +
727 + /**
728 + * Does this tag carry an explicit "optimizers keep out" attribute?
729 + *
730 + * Same `(?<![-\w])` lookbehind the rest of this file uses, so
731 + * `data-nowprocket` does not also satisfy a bare `nowprocket` lookup, and
732 + * a trailing `\b` so `data-no-defer` does not match `data-no-deferral`.
733 + * Bare and valued forms both count: an author writes `nowprocket`,
734 + * `nowprocket=""` and `data-noptimize="1"` interchangeably.
735 + *
736 + * @param string $tag Full opening tag.
737 + */
738 + private static function carries_optimizer_opt_out( string $tag ): bool {
739 + // Read ATTRIBUTE NAMES, not the tag as a string. A substring scan
740 + // matched `src="https://cdn/nowprocket/loader.js"`, `?nowprocket=1`,
741 + // `class="nowprocket"` and any inline body that merely mentioned one
742 + // of these names -- each silently un-delaying a script that should
743 + // have been delayed.
744 + //
745 + // EVERY opening tag is checked, not just the first. On the enqueue
746 + // path WP_Scripts::do_item() hands us translations + before-inline +
747 + // the real tag + after-inline concatenated, so the first `<script`
748 + // is often an inline block and the author's opt-out sits on the
749 + // external tag behind it. Reading only the first tag missed it and
750 + // delayed the script anyway -- the wrong direction: a consent banner
751 + // its author told optimizers to leave alone would not appear.
752 + //
753 + // The tag regex is quote-aware because `[^>]*>` stops at a `>` inside
754 + // a quoted value, and consent managers routinely ship JSON in a
755 + // data-* attribute.
756 + if ( ! preg_match_all( '#<script\b(?:[^>"\']|"[^"]*"|\'[^\']*\')*>#is', $tag, $tags ) ) {
757 + return false;
758 + }
759 +
760 + foreach ( $tags[0] as $open ) {
761 + // Walk name/value pairs. The name pattern is deliberately
762 + // permissive: a name we cannot recognise (Alpine's `@load`, say)
763 + // must still consume ITS OWN VALUE, or the value gets scanned as
764 + // if it were more attribute names.
765 + if ( ! preg_match_all(
766 + '#\s+([^\s=/>]+)(?:\s*=\s*(?:"[^"]*"|\'[^\']*\'|[^\s>]*))?#s',
767 + substr( $open, 7, -1 ),
768 + $found
769 + ) ) {
770 + continue;
771 + }
772 +
773 + foreach ( $found[1] as $name ) {
774 + if ( in_array( strtolower( $name ), self::OPT_OUT_ATTRIBUTES, true ) ) {
775 + return true;
776 + }
777 + }
778 + }
779 +
780 + return false;
781 + }
782 +
254 783 private const NON_EXECUTABLE_TYPES = array(
255 784 'application/ld+json',
256 785 'application/json',
257 786 'importmap',
@@ -385,8 +914,24 @@
385 914 if ( false !== stripos( $tag, 'data-xs-delay' ) || false !== stripos( $tag, 'data-xs-src' ) ) {
386 915 return $tag;
387 916 }
388 917
918 + // The author asked every optimizer to leave this tag alone.
919 + // Checked before src/type: it needs neither, so an
920 + // un-enqueued banner printed straight into wp_head is
921 + // covered the same as an enqueued one.
922 + //
923 + // Both checks, because they disagree on purpose and either
924 + // saying "leave it" is the safe answer. tag_opts_out() is
925 + // dev's (#456) and also drives the late re-check at #469;
926 + // carries_optimizer_opt_out() reads attribute NAMES across
927 + // every opening tag, so it is not fooled by a marker sitting
928 + // inside a quoted value or an inline body, and it knows the
929 + // other optimizers' markers.
930 + if ( self::tag_opts_out( $tag ) || self::carries_optimizer_opt_out( $tag ) ) {
931 + return $tag;
932 + }
933 +
389 934 // No src → inline code. The enqueue path owns those; a
390 935 // buffer rewrite here would have to reason about execution
391 936 // order it cannot see.
392 937 // `(?<![-\w])` not `\b` — see the note on the enqueue-path
@@ -409,40 +954,61 @@
409 954 return $tag;
410 955 }
411 956 }
412 957
413 - // Recover the handle from the tag's id before deciding.
958 + // An ENQUEUED script reaches this sweep too: the enqueue-path
959 + // filter leaves an EXCLUDED tag unmarked, and unmarked is all
960 + // this pass can see. Judging it on its URL alone re-delays the
961 + // very script the exclusion protected — and a handle is not
962 + // generally in its own URL, which is the shape Complianz
963 + // (`cmplz-cookiebanner`), NotificationX (`notificationx-public`)
964 + // and jQuery (`jquery-core`) all have. A site with jquery-core
965 + // excluded still shipped jQuery delayed, and every inline
966 + // `jQuery(...)` on the page threw "jQuery is not defined".
967 + // WordPress prints `id="<handle>-js"` on every enqueued
968 + // script, so the handle is right there in the tag. (#275)
414 969 //
415 - // This pass used to pass '' as the handle, on the reasoning
416 - // that a tag reaching the buffer was never enqueued and so has
417 - // none. That holds for the third-party snippets this pass
418 - // exists for — but NOT for enqueued scripts, which also travel
419 - // through here, and which WordPress prints with
420 - // `id="<handle>-js"`. Passing '' meant every handle-based
421 - // exclusion was silently inert at this layer: the user writes
422 - // `jquery-core`, the enqueue path honours it, and then the
423 - // buffer pass — which only ever compared URLs — delayed the
424 - // very script the list was protecting.
970 + // The lookbehind matters: `data-id="cmplz-cookiebanner-js"` is
971 + // somebody's own attribute, not the handle, and reading it as
972 + // one would shield a script nobody excluded.
425 973 //
426 - // That is how a site with jquery-core AND jquery-migrate
427 - // excluded still shipped jQuery delayed while migrate loaded
428 - // normally, and every inline `jQuery(...)` on the page threw
429 - // "jQuery is not defined". The two behaved differently for no
430 - // reason a user could see, which is what made it look like a
431 - // matching quirk rather than a whole layer ignoring the list.
974 + // Merge note for #374: if a URL->handle map built from
975 + // wp_scripts() lands first, resolve through that and keep
976 + // this as the FALLBACK rather than replacing it. The map is
977 + // keyed on the REGISTERED src, and Minifier::rewrite_script()
978 + // rewrites a local script's URL to a hashed /cache/xspeed/min/
979 + // path at output time -- which is why remember_original_src()
980 + // exists. So with minify_js on, the map misses every minified
981 + // script and an excluded one would be re-delayed here. The
982 + // `id` survives that rewrite.
432 983 $tag_handle = '';
433 - if ( preg_match( '#\sid\s*=\s*(["\'])(.*?)\1#i', $tag, $id_m ) ) {
984 + if ( preg_match( '#(?<![-\w])id\s*=\s*(["\'])(.*?)\1#is', $tag, $id_m ) ) {
434 985 // WP appends `-js`; anything else is somebody's own id and
435 986 // is still worth matching literally.
436 - $tag_handle = (string) preg_replace( '/-js$/', '', $id_m[2] );
987 + $tag_handle = (string) preg_replace( '/-js$/', '', trim( $id_m[2] ) );
437 988 }
438 989
439 - if ( self::is_excluded_script( $tag_handle, $src ) ) {
990 + if ( self::is_excluded_script( $tag_handle, $src, true ) ) {
440 991 return $tag;
441 992 }
993 + // The handle is passed to the target test as well, so naming a
994 + // handle in the delay list behaves the same here as it does on
995 + // the enqueue path. The two layers disagreeing on what a target
996 + // means is what made this look like a matching quirk rather
997 + // than a whole layer ignoring the list.
442 998 if ( ! self::is_delay_target( $tag_handle, $src ) ) {
443 999 return $tag;
444 1000 }
1001 + // Mirror of the enqueue-path guard: a handle that inline code
1002 + // reads stays eager unless the user named it. wp_scripts()
1003 + // is still populated at xspeed_cache_final_html time on a
1004 + // MISS, so the registry walk is consultable here too; an
1005 + // unrecoverable handle ('') simply never matches the set.
1006 + if ( '' !== $tag_handle
1007 + && isset( self::inline_bound_handles()[ $tag_handle ] )
1008 + && ! self::is_user_named_target( $tag_handle, $src ) ) {
1009 + return $tag;
1010 + }
445 1011
446 1012 return (string) preg_replace(
447 1013 '#(?<![-\w])src\s*=\s*(["\'][^"\']*["\'])#i',
448 1014 'data-xs-src=$1 data-xs-delay="1"',
@@ -500,8 +1066,13 @@
500 1066 if ( '' === trim( $body ) ) {
501 1067 return $whole;
502 1068 }
503 1069
1070 + // The tag itself asked to be left alone. (#456)
1071 + if ( self::tag_opts_out( $attrs ) ) {
1072 + return $whole;
1073 + }
1074 +
504 1075 // Our own replay bootstrap. Its body quotes the delay
505 1076 // machinery's own strings, so a pathological user target
506 1077 // fragment could match it — and a parked bootstrap means
507 1078 // nothing on the page ever replays.
@@ -529,8 +1100,17 @@
529 1100 if ( false !== stripos( $body, 'document.write' ) ) {
530 1101 return $whole;
531 1102 }
532 1103
1104 + // Our own inline scripts, by the id they are printed with.
1105 + // The src passes get this for free from the handle prefix,
1106 + // but here the handle is '' — and the facade observer's body
1107 + // names youtube/vimeo, so a user target like "youtube" would
1108 + // park the very script that makes those embeds cheap.
1109 + if ( preg_match( '#(?<![-\w])id\s*=\s*(["\'])xspeed-#i', $attrs ) ) {
1110 + return $whole;
1111 + }
1112 +
533 1113 // The body stands in for the URL in the lists the src passes
534 1114 // consult — but NOT via is_delay_target(), whose empty-list
535 1115 // default is "delay everything". That default is right for a
536 1116 // tag with a URL and catastrophic here: it would park every
@@ -536,10 +1116,13 @@
536 1116 // tag with a URL and catastrophic here: it would park every
537 1117 // inline script on the page. Inline code is delayed only on a
538 1118 // positive identification — the body names a known vendor
539 1119 // host, or a fragment the user targeted — and the exclusion
540 - // list still wins first.
541 - if ( self::is_excluded_script( '', $body ) ) {
1120 + // list still wins first. A target naming a consent manager
1121 + // lifts the floor here the same way it does for a src tag;
1122 + // without it the same entry delayed the file and left the
1123 + // vendor's inline code eager.
1124 + if ( self::is_excluded_script( '', $body, true ) ) {
542 1125 return $whole;
543 1126 }
544 1127 if ( ! self::matches_known_third_party( $body ) && ! self::matches_user_targets( $body ) ) {
545 1128 return $whole;
@@ -581,61 +1164,49 @@
581 1164 $opts = self::opts();
582 1165 $timeout = isset( $opts['delay_js_timeout'] ) ? (int) $opts['delay_js_timeout'] : 8000;
583 1166 $timeout = max( 0, min( 60000, $timeout ) );
584 1167
585 - // Tiny vanilla bootstrap; keep it self-contained so the page
586 - // has no JS dependencies before the first interaction.
587 - ?>
588 -<script id="xspeed-delay-bootstrap">
589 -(function(){
590 - var events=['mousemove','keydown','touchstart','scroll','wheel'];
591 - var fired=false;
592 - function load(){
593 - if(fired)return;fired=true;
594 - events.forEach(function(e){window.removeEventListener(e,load,{passive:true,capture:true});});
595 - var delayed=document.querySelectorAll('script[data-xs-delay]');
596 - delayed.forEach(function(s){
597 - var n=document.createElement('script');
598 - // Nonce hiding: a connected element's nonce CONTENT attribute reads
599 - // as "", so copying it via the attribute loop would hand the clone
600 - // an empty nonce and a nonce-based CSP would block the replay. The
601 - // IDL property still carries the real value.
602 - if(s.nonce){n.nonce=s.nonce;}
603 - Array.prototype.slice.call(s.attributes).forEach(function(a){
604 - if(a.name==='data-xs-src'){n.setAttribute('src',a.value);return;}
605 - if(a.name==='data-xs-delay')return;
606 - if(a.name==='nonce')return;
607 - // A parked inline tag's ORIGINAL type (module, mostly) rides in
608 - // data-xs-type — restore it, or the replay runs a module as a
609 - // classic script and its imports throw. (#274)
610 - if(a.name==='data-xs-type'){n.setAttribute('type',a.value);return;}
611 - // `type` is what a script IS, not decoration, so it is carried over
612 - // — with ONE exception: our own inline parking marker, which exists
613 - // only to stop the browser executing the original and must not be
614 - // copied onto the replacement. Dropping type wholesale broke two
615 - // things: `type="module"` became a classic script (core's Script
616 - // Modules — Navigation, lightbox, Query Loop — threw "Cannot use
617 - // import statement outside a module" on the default theme), and
618 - // `type="text/plain"`, which is precisely how a consent manager
619 - // parks a blocked third-party script, became executable again. The
620 - // second is a privacy failure, not a broken feature. (#274)
621 - if(a.name==='type'&&a.value==='text/xspeed-delayed')return;
622 - n.setAttribute(a.name,a.value);
623 - });
624 - if(!s.hasAttribute('data-xs-src')){n.text=s.text;}
625 - s.parentNode.replaceChild(n,s);
626 - });
627 - }
628 - events.forEach(function(e){window.addEventListener(e,load,{passive:true,capture:true});});
629 -<?php if ( $timeout > 0 ) : ?>
630 - setTimeout(load,<?php echo (int) $timeout; ?>);
631 -<?php endif; ?>
632 -})();
633 -</script>
634 - <?php
1168 + // The script is includes/js/delay-bootstrap.js, which also carries
1169 + // the design notes for the lifecycle replay (#494). `npm run build`
1170 + // minifies it into assets/delay-bootstrap.min.js; the timeout goes in
1171 + // place of its one placeholder.
1172 + //
1173 + // The tag goes out through wp_print_inline_script_tag(), like Free's
1174 + // other inline scripts, so a CSP plugin's wp_inline_script_attributes
1175 + // filter can give it a nonce. Printed bare, a nonce CSP blocked it
1176 + // and nothing was ever replayed.
1177 + $js = str_replace( 'XSPEED_DELAY_TIMEOUT', (string) $timeout, self::delay_bootstrap_js() );
1178 + wp_print_inline_script_tag( $js, array( 'id' => 'xspeed-delay-bootstrap' ) );
635 1179 }
636 1180
1181 + /** The delay bootstrap's code, read once per request. */
1182 + private static $delay_bootstrap_js = null;
1183 +
637 1184 /**
1185 + * The built delay bootstrap, without the line that records its source.
1186 + * If the build is missing, the readable source is valid JS too, only
1187 + * larger: printing nothing would leave every delayed script parked for
1188 + * good, because the tags are already rewritten by the time this runs.
1189 + */
1190 + private static function delay_bootstrap_js(): string {
1191 + if ( null !== self::$delay_bootstrap_js ) {
1192 + return self::$delay_bootstrap_js;
1193 + }
1194 + $root = dirname( __DIR__ );
1195 + $built = $root . '/assets/delay-bootstrap.min.js';
1196 + // phpcs:ignore WordPress.WP.AlternativeFunctions.file_get_contents_file_get_contents -- a local plugin file, not a remote URL.
1197 + $js = is_readable( $built ) ? (string) file_get_contents( $built ) : '';
1198 + if ( '' !== $js ) {
1199 + $js = (string) preg_replace( '#\A/\*[^\n]*\*/\n#', '', $js );
1200 + } else {
1201 + // phpcs:ignore WordPress.WP.AlternativeFunctions.file_get_contents_file_get_contents -- a local plugin file, not a remote URL.
1202 + $js = (string) file_get_contents( $root . '/includes/js/delay-bootstrap.js' );
1203 + }
1204 + self::$delay_bootstrap_js = trim( $js );
1205 + return self::$delay_bootstrap_js;
1206 + }
1207 +
1208 + /**
638 1209 * Filter: `style_loader_tag` — wrap stylesheets in the
639 1210 * print → onload="all" pattern so they download non-blocking.
640 1211 * Pairs with critical CSS workflows. Adds a <noscript> fallback so
641 1212 * users with JS disabled still get styles applied (via media="all").
@@ -1244,12 +1815,231 @@
1244 1815 'wp-url',
1245 1816 'wp-api-fetch',
1246 1817 );
1247 1818
1248 - private static function is_excluded_script( string $handle, string $src ): bool {
1819 + /**
1820 + * Consent managers are never deferred, and never delayed by a broad
1821 + * setting — only a delay_js_targets entry that NAMES the vendor lifts
1822 + * the floor (see user_named_consent_manager()); the
1823 + * `xspeed_js_exclusion_floor` filter remains the code-level override.
1824 + *
1825 + * A consent banner is drawn by JavaScript, and it is the one thing on
1826 + * the page that has to appear before anything else happens. Delay it
1827 + * and a visitor who lands, reads and leaves without touching the page
1828 + * is never asked — on an opt-in configuration the site then ran
1829 + * without ever offering the choice.
1830 + *
1831 + * The editable list cannot carry this. A stored value replaces the
1832 + * schema default outright (Settings_Manager::get()), so widening that
1833 + * default would reach fresh installs only, and clearing the textarea
1834 + * would drop the protection again. Same floor pattern as
1835 + * Server_Rules::COOKIE_FLOOR. Trim or extend it through
1836 + * `xspeed_js_exclusion_floor`.
1837 + *
1838 + * A URL token cannot survive a rewrite of that URL: Minify JS rewrites a
1839 + * local script to a hashed /cache/xspeed/min/ path, and Combine JS folds
1840 + * it into a bundle. On the enqueue path original_src() gives the pre-minify
1841 + * URL back, but the buffer sweep has only the tag -- so with Minify JS on
1842 + * and the `id` stripped, a banner shipped un-minified is not recognised.
1843 + * Documented in docs/user/minification.md rather than papered over.
1844 + *
1845 + * Each entry goes through target_matches(): an exact handle OR a
1846 + * case-insensitive URL substring. Both passes can match either — the
1847 + * enqueue path is handed the handle, and the buffer sweep reads it back
1848 + * out of the tag's `id`. A URL token additionally covers a banner that
1849 + * was never enqueued at all, which is how Cookiebot prints itself. (#275)
1850 + */
1851 + private const CONSENT_MANAGER_FLOOR = array(
1852 + // Prefer a plugin-directory or vendor-host URL token over a handle.
1853 + // A handle is only readable on the enqueue path and, on the buffer
1854 + // sweep, only if the tag still carries the `id` WordPress prints —
1855 + // which another plugin can strip. A URL token matches on both passes
1856 + // and covers a banner that was never enqueued at all. (#275 QA)
1857 +
1858 + // CookieYes / GDPR Cookie Consent. Handle and plugin directory are
1859 + // the same string, so this covers both paths.
1860 + 'cookie-law-info',
1861 + // Complianz: the plugin directory, covering -gdpr and -gdpr-premium.
1862 + // Was the `cmplz-cookiebanner` handle, which needed the `id` tag.
1863 + 'complianz',
1864 + // NotificationX runs its GDPR cookie notice off the same handle as
1865 + // every other notification, so excluding it excludes them all. That
1866 + // is what the plugin's own team asked for. Directory token covers
1867 + // the Pro build too; was the `notificationx-public` handle.
1868 + 'notificationx',
1869 + // Cookiebot prints its loader straight into wp_head, so only the
1870 + // buffer sweep ever sees it. This is the token Cookiebot's own WP
1871 + // Rocket and LiteSpeed integrations exclude.
1872 + 'consent.cookiebot.com',
1873 + // Cookie Notice — named in the original report and one of the most
1874 + // installed consent plugins. Its banner is enqueued from
1875 + // /plugins/cookie-notice/js/front.min.js.
1876 + 'cookie-notice',
1877 + // Cookie Notice in Cookie Compliance mode prints a different loader,
1878 + // whose host is overridable via CN_APP_WIDGET_URL — so key on the
1879 + // filename, not the CDN host.
1880 + 'hu-banner',
1881 + // Moove GDPR Cookie Compliance. Directory token: its handle
1882 + // (`moove_gdpr_frontend`) does not appear in its own URL.
1883 + 'gdpr-cookie-compliance',
1884 + // Termly's resource blocker, which also covers the legacy embed.
1885 + 'app.termly.io',
1886 + // Usercentrics, reached three ways: Cookiebot's UC mode
1887 + // (web.cmp.usercentrics.eu), Termageddon (app.usercentrics.eu) and
1888 + // the privacy proxy.
1889 + 'usercentrics.eu',
1890 + // Iubenda: both the consent solution and the consent database SDK.
1891 + 'cdn.iubenda.com',
1892 + // OneTrust. Pasted snippet rather than a wordpress.org plugin, so
1893 + // this is the SDK host rather than a verified plugin path.
1894 + 'cdn.cookielaw.org',
1895 + // Borlabs is commercial and renames its files per release; the
1896 + // vendor's own guidance is that this string stays in every path.
1897 + 'borlabs-cookie',
1898 + // Real Cookie Banner, free and pro. Its anti-adblock mode serves the
1899 + // banner from an anonymised path that no URL token can match — use
1900 + // `xspeed_js_exclusion_floor` to add the handle on such a site.
1901 + 'real-cookie-banner',
1902 + // SureCookie.
1903 + 'surecookie',
1904 + );
1905 +
1906 + /**
1907 + * What a site owner types to name each floor entry, and what the admin
1908 + * shows them. Keyed by CONSENT_MANAGER_FLOOR token; a test holds the two
1909 + * in step.
1910 + *
1911 + * The keyword is the part of the token a person would actually write
1912 + * (`cookiebot`, not `consent.cookiebot.com`), and it is always a substring
1913 + * of the token, so an entry that names the vendor this way still matches
1914 + * the vendor's URL. A brand name that appears nowhere in the URL
1915 + * (`cookieyes`, `onetrust`, `cmplz`) is deliberately not a keyword: it
1916 + * could never match the tag, so offering it would promise a lift that
1917 + * cannot happen. The exact handle always works as well.
1918 + *
1919 + * Cookiebot in Usercentrics CMP mode loads from web.cmp.usercentrics.eu,
1920 + * so the floor catches it as Usercentrics and `usercentrics` names it,
1921 + * not `cookiebot`.
1922 + */
1923 + private const CONSENT_MANAGER_NAMES = array(
1924 + 'cookie-law-info' => array( 'label' => 'CookieYes', 'keyword' => 'cookie-law-info' ),
1925 + 'complianz' => array( 'label' => 'Complianz', 'keyword' => 'complianz' ),
1926 + 'notificationx' => array( 'label' => 'NotificationX', 'keyword' => 'notificationx' ),
1927 + 'consent.cookiebot.com' => array( 'label' => 'Cookiebot', 'keyword' => 'cookiebot' ),
1928 + 'cookie-notice' => array( 'label' => 'Cookie Notice', 'keyword' => 'cookie-notice' ),
1929 + 'hu-banner' => array( 'label' => 'Cookie Notice (Cookie Compliance)', 'keyword' => 'hu-banner' ),
1930 + 'gdpr-cookie-compliance' => array( 'label' => 'GDPR Cookie Compliance (Moove)', 'keyword' => 'gdpr-cookie-compliance' ),
1931 + 'app.termly.io' => array( 'label' => 'Termly', 'keyword' => 'termly' ),
1932 + 'usercentrics.eu' => array( 'label' => 'Usercentrics', 'keyword' => 'usercentrics' ),
1933 + 'cdn.iubenda.com' => array( 'label' => 'Iubenda', 'keyword' => 'iubenda' ),
1934 + 'cdn.cookielaw.org' => array( 'label' => 'OneTrust', 'keyword' => 'cookielaw' ),
1935 + 'borlabs-cookie' => array( 'label' => 'Borlabs Cookie', 'keyword' => 'borlabs' ),
1936 + 'real-cookie-banner' => array( 'label' => 'Real Cookie Banner', 'keyword' => 'real-cookie-banner' ),
1937 + 'surecookie' => array( 'label' => 'SureCookie', 'keyword' => 'surecookie' ),
1938 + );
1939 +
1940 + /**
1941 + * "Label (keyword)" for every built-in consent manager, for the admin.
1942 + *
1943 + * Reads the built-in list, not the filtered floor: the admin describes
1944 + * what ships, and a site that trimmed the floor in code knows it did.
1945 + *
1946 + * @return string[]
1947 + */
1948 + public static function consent_manager_labels(): array {
1949 + $out = array();
1950 + foreach ( self::CONSENT_MANAGER_FLOOR as $token ) {
1951 + $name = self::CONSENT_MANAGER_NAMES[ $token ] ?? array(
1952 + 'label' => $token,
1953 + 'keyword' => $token,
1954 + );
1955 + $out[] = $name['label'] . ' (' . $name['keyword'] . ')';
1956 + }
1957 + return $out;
1958 + }
1959 +
1960 + /**
1961 + * Per-request memo for exclusion_floor(). Null = not resolved.
1962 + *
1963 + * @var string[]|null
1964 + */
1965 + private static $exclusion_floor = null;
1966 +
1967 + /**
1968 + * The built-in exclusion floor, after the site has had its say.
1969 + *
1970 + * @return string[]
1971 + */
1972 + private static function exclusion_floor(): array {
1973 + if ( null === self::$exclusion_floor ) {
1974 + /**
1975 + * Scripts that are never deferred or delayed, whatever the
1976 + * user's exclusion list holds. Each entry is an exact script
1977 + * handle or a case-insensitive URL substring.
1978 + *
1979 + * Return the array minus a token to let Delay JS postpone that
1980 + * consent manager on purpose; add one to protect another script.
1981 + *
1982 + * @param string[] $floor Built-in floor.
1983 + */
1984 + $floor = apply_filters( 'xspeed_js_exclusion_floor', self::CONSENT_MANAGER_FLOOR );
1985 + self::$exclusion_floor = array_values(
1986 + array_filter( array_map( 'strval', (array) $floor ), static fn( $t ) => '' !== $t )
1987 + );
1988 + }
1989 + return self::$exclusion_floor;
1990 + }
1991 +
1992 + /**
1993 + * @param string $handle Script handle ('' on the buffer sweep
1994 + * when no id survived).
1995 + * @param string $src Script URL.
1996 + * @param bool $named_lifts_floor Delay paths only: a delay_js_targets
1997 + * entry that NAMES the consent manager
1998 + * passes the floor (see
1999 + * user_named_consent_manager()). Typing a
2000 + * consent manager's name into an
2001 + * allow-list is the site owner taking the
2002 + * consent-timing decision back — GDPR is
2003 + * theirs to weigh, not ours; the floor
2004 + * only exists so Delay JS can't hide a
2005 + * banner NOBODY pointed at. Their own
2006 + * exclusion list, ALWAYS_EXCLUDED_HANDLES
2007 + * and our beacons still win: on a
2008 + * conflict between the user's two lists,
2009 + * protection beats postponement.
2010 + */
2011 + private static function is_excluded_script( string $handle, string $src, bool $named_lifts_floor = false ): bool {
1249 2012 if ( in_array( $handle, self::ALWAYS_EXCLUDED_HANDLES, true ) ) {
1250 2013 return true;
1251 2014 }
2015 + // Never defer or delay our own scripts. The fold and RUM beacons
2016 + // measure the FIRST paint — delayed to first interaction they
2017 + // measure a scrolled page or nothing, so fold quorum never fills
2018 + // and full CSS deferral never licenses. Found live: delay_js with
2019 + // empty targets delayed the fold beacon itself, and the site sat
2020 + // at zero fold reports for hours while its stylesheets stayed
2021 + // render-blocking. Prefix, not a handle list, so a Pro module's
2022 + // beacon added later cannot re-open the hole.
2023 + if ( 0 === strpos( $handle, 'xspeed-' ) ) {
2024 + return true;
2025 + }
2026 + // Ahead of the user list, and ahead of the empty-list early return
2027 + // below: an install that saved the Minify panel before this shipped
2028 + // has a stored list that knows nothing about consent managers, and
2029 + // one that cleared the textarea has no list at all. Neither may
2030 + // hide the banner. (#275)
2031 + foreach ( self::exclusion_floor() as $needle ) {
2032 + if ( self::target_matches( $needle, $handle, $src ) ) {
2033 + // `continue`, not `break`: a second floor token matching the
2034 + // same tag has to be named too, or a filter-added token
2035 + // would be lifted by an entry that names only the first.
2036 + if ( $named_lifts_floor && self::user_named_consent_manager( $needle, $handle, $src ) ) {
2037 + continue;
2038 + }
2039 + return true;
2040 + }
2041 + }
1252 2042 $opts = self::opts();
1253 2043 $excluded = is_array( $opts['defer_js_excluded'] ?? null ) ? $opts['defer_js_excluded'] : array();
1254 2044 if ( empty( $excluded ) ) {
1255 2045 return false;
@@ -1293,8 +2083,154 @@
1293 2083 }
1294 2084 return false;
1295 2085 }
1296 2086
2087 + /**
2088 + * Whether the user EXPLICITLY named this script in delay_js_targets.
2089 + *
2090 + * Unlike is_delay_target() this never treats an empty list as
2091 + * everything and never falls back to the vendor list — it answers
2092 + * only "did the user deliberately point at this handle/URL?", which
2093 + * is what lets an explicit entry override the inline-bound guard.
2094 + *
2095 + * @param string $handle Script handle.
2096 + * @param string $src Script URL.
2097 + */
2098 + private static function is_user_named_target( string $handle, string $src ): bool {
2099 + $opts = self::opts();
2100 + $targets = is_array( $opts['delay_js_targets'] ?? null ) ? $opts['delay_js_targets'] : array();
2101 + foreach ( $targets as $needle ) {
2102 + $needle = (string) $needle;
2103 + if ( '' !== $needle && self::target_matches( $needle, $handle, $src ) ) {
2104 + return true;
2105 + }
2106 + }
2107 + return false;
2108 + }
2109 +
2110 + /**
2111 + * Whether a delay_js_targets entry NAMES the consent manager whose floor
2112 + * token matched this tag, and so lifts the floor for it.
2113 + *
2114 + * is_user_named_target() is not enough here: it asks whether any entry
2115 + * matches the tag, and a delay target is a URL substring. `/plugins/`,
2116 + * `.js`, `min.js`, `frontend` or the site's own host each match every
2117 + * consent banner on the page, so one broad entry switched the floor off
2118 + * for all of them and brought #275 back. An entry names the vendor when
2119 + * it is the exact handle, or when it contains the vendor's keyword (or
2120 + * its floor token) and still matches the tag, so `notificationx` and
2121 + * `/plugins/notificationx/` lift NotificationX, `termly` cannot lift
2122 + * Cookiebot, and `/plugins/` lifts nothing.
2123 + *
2124 + * A token added through `xspeed_js_exclusion_floor` has no keyword, so
2125 + * only an entry containing that token, or the exact handle, names it.
2126 + *
2127 + * @param string $floor_token The floor entry that matched this tag.
2128 + * @param string $handle Script handle ('' when unknown).
2129 + * @param string $src Script URL, or the body on the inline pass.
2130 + */
2131 + private static function user_named_consent_manager( string $floor_token, string $handle, string $src ): bool {
2132 + $opts = self::opts();
2133 + $targets = is_array( $opts['delay_js_targets'] ?? null ) ? $opts['delay_js_targets'] : array();
2134 + $names = array( $floor_token );
2135 + if ( isset( self::CONSENT_MANAGER_NAMES[ $floor_token ] ) ) {
2136 + $names[] = self::CONSENT_MANAGER_NAMES[ $floor_token ]['keyword'];
2137 + }
2138 + foreach ( $targets as $needle ) {
2139 + $needle = trim( (string) $needle );
2140 + if ( '' === $needle ) {
2141 + continue;
2142 + }
2143 + $names_it = '' !== $handle && $handle === $needle;
2144 + foreach ( $names as $name ) {
2145 + if ( false !== stripos( $needle, $name ) ) {
2146 + $names_it = true;
2147 + break;
2148 + }
2149 + }
2150 + if ( $names_it && self::target_matches( $needle, $handle, $src ) ) {
2151 + return true;
2152 + }
2153 + }
2154 + return false;
2155 + }
2156 +
2157 + /** Both toggles on: delay_js and its carry-the-inline-snippets mode. */
2158 + private static function smart_delay_enabled(): bool {
2159 + $opts = self::opts();
2160 + return ! empty( $opts['delay_js'] ) && ! empty( $opts['delay_js_smart'] );
2161 + }
2162 +
2163 + /**
2164 + * Would Smart Delay postpone this handle's tag?
2165 + *
2166 + * The snippet-parking filter runs when WordPress prints a handle's
2167 + * `before` snippet — BEFORE script_loader_tag sees the tag itself — so
2168 + * the decision cannot be read back from what happened to the tag; both
2169 + * sides evaluate this same predicate. It mirrors the handle/src checks
2170 + * of delay_script_tag() only: the tag-level outs there (an optimizer
2171 + * opt-out attribute, a non-executable type) are invisible here, so a
2172 + * tag that keeps itself eager through one of those can still have its
2173 + * snippets parked. That parks an init until first interaction rather
2174 + * than throwing, and Smart Delay is opt-in — acceptable, and documented
2175 + * on the setting.
2176 + */
2177 + private static function smart_delays_handle( string $handle ): bool {
2178 + if ( '' === $handle ) {
2179 + return false;
2180 + }
2181 + $src = self::original_src( $handle );
2182 + if ( self::is_excluded_script( $handle, $src, true ) ) {
2183 + return false;
2184 + }
2185 + return self::is_delay_target( $handle, $src );
2186 + }
2187 +
2188 + /**
2189 + * Park a delayed handle's own before/after snippet, in Smart Delay mode.
2190 + *
2191 + * Runs on `wp_inline_script_attributes`, which fires for every inline
2192 + * script WordPress prints itself — so it works on pages the HTML buffer
2193 + * never filters (a BYPASS route like /cart), where the handle's tag is
2194 + * still delayed by script_loader_tag. `-js-extra` stays eager on
2195 + * purpose: it is data assignments, harmless early and sometimes read by
2196 + * eager code.
2197 + *
2198 + * @param mixed $attributes Inline script attributes.
2199 + * @param string $javascript The snippet body.
2200 + * @return mixed
2201 + */
2202 + public static function park_smart_inline( $attributes, $javascript = '' ) {
2203 + if ( ! is_array( $attributes ) || ! self::smart_delay_enabled() || self::skip_in_non_frontend_context() ) {
2204 + return $attributes;
2205 + }
2206 + $id = isset( $attributes['id'] ) ? (string) $attributes['id'] : '';
2207 + if ( ! preg_match( '#^(.+)-js-(?:before|after)$#', $id, $m ) ) {
2208 + return $attributes;
2209 + }
2210 + if ( ! self::smart_delays_handle( $m[1] ) ) {
2211 + return $attributes;
2212 + }
2213 + $type = isset( $attributes['type'] ) ? (string) $attributes['type'] : '';
2214 + if ( in_array( $type, self::NON_EXECUTABLE_TYPES, true ) ) {
2215 + return $attributes; // data, or parked by someone else on purpose.
2216 + }
2217 + // A delayed document.write replays after the document has closed
2218 + // and replaces the page. Same rule as delay_inline_snippets().
2219 + if ( false !== stripos( (string) $javascript, 'document.write' ) ) {
2220 + return $attributes;
2221 + }
2222 + if ( '' !== $type && ! in_array( $type, self::DEFAULT_JS_TYPES, true ) ) {
2223 + $stash = (string) preg_replace( '#[^a-z0-9/+.\-]#', '', $type );
2224 + if ( '' !== $stash ) {
2225 + $attributes['data-xs-type'] = $stash;
2226 + }
2227 + }
2228 + $attributes['type'] = 'text/xspeed-delayed';
2229 + $attributes['data-xs-delay'] = '1';
2230 + return $attributes;
2231 + }
2232 +
1297 2233 private static function is_delay_target( string $handle, string $src ): bool {
1298 2234 $opts = self::opts();
1299 2235 $targets = is_array( $opts['delay_js_targets'] ?? null ) ? $opts['delay_js_targets'] : array();
1300 2236 $targets = array_filter( array_map( 'strval', $targets ), static fn( $t ) => '' !== $t );
@@ -1431,9 +2367,12 @@
1431 2367 self::$opts = null;
1432 2368 self::$uploads_base = null;
1433 2369 self::$delay_bootstrap_printed = false;
1434 2370 self::$js_measured_layout = null;
2371 + self::$exclusion_floor = null;
1435 2372 self::$inline_bound_handles = null;
2373 + self::$pristine_tag = array();
2374 + self::$our_late_attrs = array();
1436 2375 }
1437 2376
1438 2377 /**
1439 2378 * Per-request memo for inline_bound_handles(). Null = not resolved.