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<title>[38236] branches/4.6: Media: In `_wp_handle_upload()` use `call_user_func_array()` to call the upload error handler.</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/38236">38236</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/38236","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>ocean90</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2016-08-09 21:55:04 +0000 (Tue, 09 Aug 2016)</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'>Media: In `_wp_handle_upload()` use `call_user_func_array()` to call the upload error handler.
The default error handler `wp_handle_upload_error()` expects a reference for the first parameter but `call_user_func()` doesn't pass parameters by reference. The current code didn't produce any issues until now. PHP 7.0.9 (and PHP 7.1) is now stricter and prevents calling the error handler with a warning:
> PHP Warning: Parameter 1 to wp_handle_upload_error() expected to be a reference, value given.
To restore the error handler `_wp_handle_upload()` now uses `call_user_func_array()`.
Merge of <a href="https://core.trac.wordpress.org/changeset/38235">[38235]</a> to the 4.6 branch.
Props jbrinley.
Props jorbin for review.
See <a href="https://core.trac.wordpress.org/ticket/37570">#37570</a>.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#branches46srcwpadminincludesfilephp">branches/4.6/src/wp-admin/includes/file.php</a></li>
</ul>
<h3>Property Changed</h3>
<ul>
<li><a href="#branches46">branches/4.6/</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<span class="cx" style="display: block; padding: 0 10px">Index: branches/4.6
</span><span class="cx" style="display: block; padding: 0 10px">===================================================================
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">--- branches/4.6 2016-08-09 21:53:12 UTC (rev 38235)
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+++ branches/4.6 2016-08-09 21:55:04 UTC (rev 38236)
</ins><a id="branches46"></a>
<div class="propset"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Property changes: branches/4.6</h4>
<pre class="diff"><span>
</span></pre></div>
<a id="svnmergeinfo"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: svn:mergeinfo</h4></div>
<span class="cx" style="display: block; padding: 0 10px"> /branches/3.1:18031
</span><span class="cx" style="display: block; padding: 0 10px"> /branches/3.3:20543
</span><span class="cx" style="display: block; padding: 0 10px"> /branches/3.4:21757
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-/trunk:18512,38181,38183,38185-38186,38189,38191,38194,38196,38199,38201,38205,38207,38209,38211-38212,38216,38218,38221,38225,38227
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+/trunk:18512,38181,38183,38185-38186,38189,38191,38194,38196,38199,38201,38205,38207,38209,38211-38212,38216,38218,38221,38225,38227,38235
</ins><span class="cx" style="display: block; padding: 0 10px">\ No newline at end of property
</span><a id="branches46srcwpadminincludesfilephp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/4.6/src/wp-admin/includes/file.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/4.6/src/wp-admin/includes/file.php 2016-08-09 21:53:12 UTC (rev 38235)
+++ branches/4.6/src/wp-admin/includes/file.php 2016-08-09 21:55:04 UTC (rev 38236)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -270,7 +270,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> // You may have had one or more 'wp_handle_upload_prefilter' functions error out the file. Handle that gracefully.
</span><span class="cx" style="display: block; padding: 0 10px"> if ( isset( $file['error'] ) && ! is_numeric( $file['error'] ) && $file['error'] ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- return $upload_error_handler( $file, $file['error'] );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ return call_user_func_array( $upload_error_handler, array( &$file, $file['error'] ) );
</ins><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> // Install user overrides. Did we mention that this voids your warranty?
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -312,11 +312,11 @@
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> // A correct form post will pass this test.
</span><span class="cx" style="display: block; padding: 0 10px"> if ( $test_form && ( ! isset( $_POST['action'] ) || ( $_POST['action'] != $action ) ) ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- return call_user_func( $upload_error_handler, $file, __( 'Invalid form submission.' ) );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ return call_user_func_array( $upload_error_handler, array( &$file, __( 'Invalid form submission.' ) ) );
</ins><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px"> // A successful upload will pass this test. It makes no sense to override this one.
</span><span class="cx" style="display: block; padding: 0 10px"> if ( isset( $file['error'] ) && $file['error'] > 0 ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- return call_user_func( $upload_error_handler, $file, $upload_error_strings[ $file['error'] ] );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ return call_user_func_array( $upload_error_handler, array( &$file, $upload_error_strings[ $file['error'] ] ) );
</ins><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> $test_file_size = 'wp_handle_upload' === $action ? $file['size'] : filesize( $file['tmp_name'] );
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -327,13 +327,13 @@
</span><span class="cx" style="display: block; padding: 0 10px"> } else {
</span><span class="cx" style="display: block; padding: 0 10px"> $error_msg = __( 'File is empty. Please upload something more substantial. This error could also be caused by uploads being disabled in your php.ini or by post_max_size being defined as smaller than upload_max_filesize in php.ini.' );
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- return call_user_func( $upload_error_handler, $file, $error_msg );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ return call_user_func_array( $upload_error_handler, array( &$file, $error_msg ) );
</ins><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> // A properly uploaded file will pass this test. There should be no reason to override this one.
</span><span class="cx" style="display: block; padding: 0 10px"> $test_uploaded_file = 'wp_handle_upload' === $action ? @ is_uploaded_file( $file['tmp_name'] ) : @ is_file( $file['tmp_name'] );
</span><span class="cx" style="display: block; padding: 0 10px"> if ( ! $test_uploaded_file ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- return call_user_func( $upload_error_handler, $file, __( 'Specified file failed upload test.' ) );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ return call_user_func_array( $upload_error_handler, array( &$file, __( 'Specified file failed upload test.' ) ) );
</ins><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> // A correct MIME type will pass this test. Override $mimes or use the upload_mimes filter.
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -348,7 +348,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> $file['name'] = $proper_filename;
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px"> if ( ( ! $type || !$ext ) && ! current_user_can( 'unfiltered_upload' ) ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- return call_user_func( $upload_error_handler, $file, __( 'Sorry, this file type is not permitted for security reasons.' ) );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ return call_user_func_array( $upload_error_handler, array( &$file, __( 'Sorry, this file type is not permitted for security reasons.' ) ) );
</ins><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px"> if ( ! $type ) {
</span><span class="cx" style="display: block; padding: 0 10px"> $type = $file['type'];
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -362,7 +362,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> * overriding this one.
</span><span class="cx" style="display: block; padding: 0 10px"> */
</span><span class="cx" style="display: block; padding: 0 10px"> if ( ! ( ( $uploads = wp_upload_dir( $time ) ) && false === $uploads['error'] ) ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- return call_user_func( $upload_error_handler, $file, $uploads['error'] );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ return call_user_func_array( $upload_error_handler, array( &$file, $uploads['error'] ) );
</ins><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> $filename = wp_unique_filename( $uploads['path'], $file['name'], $unique_filename_callback );
</span></span></pre>
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