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DOMElement::replaceWith causes crash #11290

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fluffycondor opened this issue May 22, 2023 · 2 comments
Closed

DOMElement::replaceWith causes crash #11290

fluffycondor opened this issue May 22, 2023 · 2 comments
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Bug Extension: dom Status: Verified

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@fluffycondor
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Description

This is a longstanding one (sorry for the php-dom day!). Sometimes the same code from #11288 causes crash on every 8.x PHP version. The code is the same, but the html markup is slightly differs.

Live reproducing:
https://3v4l.org/KjJgQ // On every PHP 8.x version throws DOMException: Not Found Error, hangs for 1-15 seconds, then crashes.
https://3v4l.org/FdOZR // Hangs for 1-15 seconds, crashes on every PHP versions but PHP 8.2.6 and 8.1.19.

It's kinda related to #11289 and #11288, but this is a longstanding one. I guess this is a part of a big picture, so I hope this would help to investigate the main cause of weird php-dom behavior.

The following code:

<?php
$html = <<<HTML
<!DOCTYPE HTML>
<html>
<body>
    <p><span class="unwrap_me">Lorem</span><span class="unwrap_me">ipsum</span><span class="unwrap_me">dolor</span></p>
</body>
</html>
HTML;

$dom = new DOMDocument();
$dom->loadHTML($html);

$spans = iterator_to_array($dom->getElementsByTagName('span')->getIterator());
foreach ($spans as $span) {
    if ('unwrap_me' === $span->getAttribute('class')) {
        $span->replaceWith(...$span->childNodes);
    }
}

results in crash on every PHP 8.x version.

PHP Version

PHP 8.x

Operating System

No response
@fluffycondor
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Oh, looks like this could be a duplicate of #9142.

@nielsdos
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nielsdos commented May 22, 2023 •
edited

This one's also fixed by #11299, so I'll amend that PR to include this test. Thanks for the report & testcase!

nielsdos added a commit to nielsdos/php-src that referenced this issue May 22, 2023
@nielsdos
Fix phpGH-11288 and phpGH-11289 and phpGH-11290: DOMException with re…
10d073c 
…placeWith

This replaces the implementation of before and after with one following
the spec very strictly, instead of trying to figure out the state we're
in by looking at the pointers. Also relaxes the condition on text node
copying to prevent working on a stale node pointer.
@nielsdos nielsdos linked a pull request May 22, 2023 that will close this issue
Fix GH-11288 and GH-11289 and GH-11290 and GH-9142: DOMExceptions and segfaults with replaceWith #11299
Closed
nielsdos added a commit to nielsdos/php-src that referenced this issue May 22, 2023
@nielsdos
Fix phpGH-11288 and phpGH-11289 and phpGH-11290 and phpGH-9142: DOMEx…
382101e 
…ception with replaceWith

This replaces the implementation of before and after with one following
the spec very strictly, instead of trying to figure out the state we're
in by looking at the pointers. Also relaxes the condition on text node
copying to prevent working on a stale node pointer.
nielsdos added a commit that referenced this issue May 25, 2023
@nielsdos
Fix GH-11288 and GH-11289 and GH-11290 and GH-9142: DOMExceptions and…
cba335d 
… segfaults with replaceWith

This replaces the implementation of before and after with one following
the spec very strictly, instead of trying to figure out the state we're
in by looking at the pointers. Also relaxes the condition on text node
copying to prevent working on a stale node pointer.

Closes GH-11299.
nielsdos added a commit that referenced this issue May 25, 2023
@nielsdos
Merge branch 'PHP-8.1' into PHP-8.2
af72727 
* PHP-8.1:
  Fix GH-11288 and GH-11289 and GH-11290 and GH-9142: DOMExceptions and segfaults with replaceWith
nielsdos added a commit that referenced this issue May 25, 2023
@nielsdos
Merge branch 'PHP-8.2'
56b1c11 
* PHP-8.2:
  Fix GH-11288 and GH-11289 and GH-11290 and GH-9142: DOMExceptions and segfaults with replaceWith
@pronskiy pronskiy mentioned this issue Jun 6, 2023
Merged
@pitbulk pitbulk mentioned this issue Sep 22, 2023
Closed
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@nielsdos @fluffycondor