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<title>[57388] trunk/src/wp-admin: Uploads: Check for and verify ZIP archives.</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="https://core.trac.wordpress.org/changeset/57388">57388</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"https://core.trac.wordpress.org/changeset/57388","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>jorbin</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2024-01-30 14:21:47 +0000 (Tue, 30 Jan 2024)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>Uploads: Check for and verify ZIP archives.
Props costdev, peterwilsoncc, azaozz, tykoted, johnbillion, desrosj, afragen, jorbin.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpadminincludesclassfileuploadupgraderphp">trunk/src/wp-admin/includes/class-file-upload-upgrader.php</a></li>
<li><a href="#trunksrcwpadminupdatephp">trunk/src/wp-admin/update.php</a></li>
</ul>
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<div id="patch">
<h3>Diff</h3>
<a id="trunksrcwpadminincludesclassfileuploadupgraderphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-admin/includes/class-file-upload-upgrader.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-admin/includes/class-file-upload-upgrader.php 2024-01-30 14:08:20 UTC (rev 57387)
+++ trunk/src/wp-admin/includes/class-file-upload-upgrader.php 2024-01-30 14:21:47 UTC (rev 57388)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -69,6 +69,30 @@
</span><span class="cx" style="display: block; padding: 0 10px"> wp_die( $file['error'] );
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px">
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ if ( 'pluginzip' === $form || 'themezip' === $form ) {
+ $archive_is_valid = false;
+
+ /** This filter is documented in wp-admin/includes/file.php */
+ if ( class_exists( 'ZipArchive', false ) && apply_filters( 'unzip_file_use_ziparchive', true ) ) {
+ $archive = new ZipArchive();
+ $archive_is_valid = $archive->open( $file['file'], ZIPARCHIVE::CHECKCONS );
+
+ if ( true === $archive_is_valid ) {
+ $archive->close();
+ }
+ } else {
+ require_once ABSPATH . 'wp-admin/includes/class-pclzip.php';
+
+ $archive = new PclZip( $file['file'] );
+ $archive_is_valid = is_array( $archive->properties() );
+ }
+
+ if ( true !== $archive_is_valid ) {
+ wp_delete_file( $file['file'] );
+ wp_die( __( 'Incompatible Archive.' ) );
+ }
+ }
+
</ins><span class="cx" style="display: block; padding: 0 10px"> $this->filename = $_FILES[ $form ]['name'];
</span><span class="cx" style="display: block; padding: 0 10px"> $this->package = $file['file'];
</span><span class="cx" style="display: block; padding: 0 10px">
</span></span></pre></div>
<a id="trunksrcwpadminupdatephp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-admin/update.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-admin/update.php 2024-01-30 14:08:20 UTC (rev 57387)
+++ trunk/src/wp-admin/update.php 2024-01-30 14:21:47 UTC (rev 57388)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -154,6 +154,10 @@
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> check_admin_referer( 'plugin-upload' );
</span><span class="cx" style="display: block; padding: 0 10px">
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ if ( isset( $_FILES['pluginzip']['name'] ) && ! str_ends_with( strtolower( $_FILES['pluginzip']['name'] ), '.zip' ) ) {
+ wp_die( __( 'Only .zip archives may be uploaded.' ) );
+ }
+
</ins><span class="cx" style="display: block; padding: 0 10px"> $file_upload = new File_Upload_Upgrader( 'pluginzip', 'package' );
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> // Used in the HTML title tag.
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -302,6 +306,10 @@
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> check_admin_referer( 'theme-upload' );
</span><span class="cx" style="display: block; padding: 0 10px">
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ if ( isset( $_FILES['themezip']['name'] ) && ! str_ends_with( strtolower( $_FILES['themezip']['name'] ), '.zip' ) ) {
+ wp_die( __( 'Only .zip archives may be uploaded.' ) );
+ }
+
</ins><span class="cx" style="display: block; padding: 0 10px"> $file_upload = new File_Upload_Upgrader( 'themezip', 'package' );
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> // Used in the HTML title tag.
</span></span></pre>
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