Incorrect logic for 'edit-own' and 'delete-own' permissions
>>> [!note] Migrated issue
<!-- Drupal.org comment -->
<!-- Migrated from issue #3377831. -->
Reported by: [andy inman](https://www.drupal.org/user/216383)
Related to !4
>>>
<h3 id="summary-problem-motivation">Problem/Motivation</h3>
<p>In <code>MicroContentAccessHandler.php</code>, ‘own’ content is determined by <code>$microcontent->getRevisionUserId()</code></p>
<div class="codeblock">
<pre><span style="color: #000000"><span style="color: #0000BB"><?php<br></span><span style="color: #007700">case </span><span style="color: #DD0000">'update'</span><span style="color: #007700">:<br> return </span><span style="color: #0000BB">AccessResult</span><span style="color: #007700">::</span><span style="color: #0000BB">allowedIfHasPermission</span><span style="color: #007700">(</span><span style="color: #0000BB">$account</span><span style="color: #007700">, </span><span style="color: #0000BB">sprintf</span><span style="color: #007700">(</span><span style="color: #DD0000">'update any %s microcontent'</span><span style="color: #007700">, </span><span style="color: #0000BB">$microcontent</span><span style="color: #007700">-></span><span style="color: #0000BB">bundle</span><span style="color: #007700">()))<br> -></span><span style="color: #0000BB">orIf</span><span style="color: #007700">(</span><span style="color: #0000BB">AccessResult</span><span style="color: #007700">::</span><span style="color: #0000BB">allowedIf</span><span style="color: #007700">(</span><span style="color: #0000BB">$account</span><span style="color: #007700">-></span><span style="color: #0000BB">hasPermission</span><span style="color: #007700">(</span><span style="color: #0000BB">sprintf</span><span style="color: #007700">(</span><span style="color: #DD0000">'update own %s microcontent'</span><span style="color: #007700">, </span><span style="color: #0000BB">$microcontent</span><span style="color: #007700">-></span><span style="color: #0000BB">bundle</span><span style="color: #007700">())) && </span><span style="color: #0000BB">$microcontent</span><span style="color: #007700">-></span><span style="color: #0000BB">getRevisionUserId</span><span style="color: #007700">() === </span><span style="color: #0000BB">$account</span><span style="color: #007700">-></span><span style="color: #0000BB">id</span><span style="color: #007700">())<br> -></span><span style="color: #0000BB">cachePerPermissions</span><span style="color: #007700">()<br> -></span><span style="color: #0000BB">cachePerUser</span><span style="color: #007700">());<br></span><span style="color: #0000BB">?></span></span></pre></div>
<p>Use of the revision owner user id here is wrong. Or, if intentional, it’s not how Drupal core and contrib modules generally work - they determine “own” content based on the author/owner value of the entity. Example for core media module in <code>MediaAccessControlHandler.php</code></p>
<div class="codeblock">
<pre><span style="color: #000000"><span style="color: #0000BB"><?php<br>$is_owner </span><span style="color: #007700">= (</span><span style="color: #0000BB">$account</span><span style="color: #007700">-></span><span style="color: #0000BB">id</span><span style="color: #007700">() && </span><span style="color: #0000BB">$account</span><span style="color: #007700">-></span><span style="color: #0000BB">id</span><span style="color: #007700">() === </span><span style="color: #0000BB">$entity</span><span style="color: #007700">-></span><span style="color: #0000BB">getOwnerId</span><span style="color: #007700">());<br><br></span><span style="color: #FF8000">// ... later ...<br><br> </span><span style="color: #007700">case </span><span style="color: #DD0000">'update'</span><span style="color: #007700">:<br> if (</span><span style="color: #0000BB">$account</span><span style="color: #007700">-></span><span style="color: #0000BB">hasPermission</span><span style="color: #007700">(</span><span style="color: #DD0000">'edit any ' </span><span style="color: #007700">. </span><span style="color: #0000BB">$type </span><span style="color: #007700">. </span><span style="color: #DD0000">' media'</span><span style="color: #007700">)) {<br> return </span><span style="color: #0000BB">AccessResult</span><span style="color: #007700">::</span><span style="color: #0000BB">allowed</span><span style="color: #007700">()-></span><span style="color: #0000BB">cachePerPermissions</span><span style="color: #007700">();<br> }<br> if (</span><span style="color: #0000BB">$account</span><span style="color: #007700">-></span><span style="color: #0000BB">hasPermission</span><span style="color: #007700">(</span><span style="color: #DD0000">'edit own ' </span><span style="color: #007700">. </span><span style="color: #0000BB">$type </span><span style="color: #007700">. </span><span style="color: #DD0000">' media'</span><span style="color: #007700">) && </span><span style="color: #0000BB">$is_owner</span><span style="color: #007700">) {<br> return </span><span style="color: #0000BB">AccessResult</span><span style="color: #007700">::</span><span style="color: #0000BB">allowed</span><span style="color: #007700">()-></span><span style="color: #0000BB">cachePerPermissions</span><span style="color: #007700">()-></span><span style="color: #0000BB">cachePerUser</span><span style="color: #007700">()-></span><span style="color: #0000BB">addCacheableDependency</span><span style="color: #007700">(</span><span style="color: #0000BB">$entity</span><span style="color: #007700">);<br></span><span style="color: #0000BB">?></span></span></pre></div>
<p>Impact: </p>
<p>If a user’s edit and delete permissions are limited to edit-own and delete-own, they lose that access if an admin (etc) edits the item, because then the revision author would become that person.</p>
<h3 id="summary-proposed-resolution">Proposed resolution</h3>
<p>Use <code>$microcontent->getOwnerId()</code> instead of <code>$microcontent->getRevisionUserId()</code></p>
<h3 id="summary-remaining-tasks">Remaining tasks</h3>
<p>I've built a patch, to be submitted shortly.</p>
issue
GitLab AI Context
Project: project/microcontent
Instance: https://git.drupalcode.org
Repository: https://git.drupalcode.org/project/microcontent
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