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<title>[44056] branches/4.7/src/wp-admin: Editor: Remove unwanted fields before saving posts.</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/44056">44056</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/44056","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>pento</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2018-12-13 01:40:40 +0000 (Thu, 13 Dec 2018)</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'>Editor: Remove unwanted fields before saving posts.

The `meta_input`, `file`, and `guid` fields are not intended to be updated through user input.

Merges <a href="https://core.trac.wordpress.org/changeset/44047">[44047]</a> to the 4.7 branch.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#branches47srcwpadminincludesajaxactionsphp">branches/4.7/src/wp-admin/includes/ajax-actions.php</a></li>
<li><a href="#branches47srcwpadminincludespostphp">branches/4.7/src/wp-admin/includes/post.php</a></li>
<li><a href="#branches47srcwpadminpostphp">branches/4.7/src/wp-admin/post.php</a></li>
</ul>

<h3>Property Changed</h3>
<ul>
<li><a href="#branches47">branches/4.7/</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<span class="cx" style="display: block; padding: 0 10px">Index: branches/4.7
</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/4.7 2018-12-13 01:39:08 UTC (rev 44055)
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+++ branches/4.7  2018-12-13 01:40:40 UTC (rev 44056)
</ins><a id="branches47"></a>
<div class="propset"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Property changes: branches/4.7</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/3.4:21757
</span><span class="cx" style="display: block; padding: 0 10px"> /branches/4.8:42478
</span><span class="cx" style="display: block; padding: 0 10px"> /branches/4.9:42434
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-/branches/5.0:43988,43994,44014,44017
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+/branches/5.0:43988,43994,44014,44017,44047
</ins><span class="cx" style="display: block; padding: 0 10px"> /trunk:39365,39367,39369,39371,39373,39375-39376,39378,39380,39382,39384,39386,39388,39390,39392-39393,39396-39397,39400,39402,39404,39406,39409,39411,39413,39415,39417-39420,39424,39426,39428,39430,39432-39434,39436,39438,39440,39442-39444,39447,39449-39451,39453,39455-39457,39460,39462,39464,39466,39468,39470-39471,39475,39477-39478,39482-39483,39487-39488,39490,39495-39496,39499,39502,39504,39506,39508,39510,39512,39514,39517,39520,39522,39545-39547,39557-39563,39565,39578,39580-39581,39584,39586,39594-39595,39597-39599,39601,39603,39612-39613,39616-39617,39619-39623,39626,39635,39640,39645,39649,39657,39659,39663,39677-39678,39680-39681,39684-39686,39688-39689,39692,39720,39742,39744,39759-39760,39772,39795,39807-39808,39831,39843,39848,39850,39912,39914,39919,39923-39924,39949,39951-39952,39954,39956,39968,39992,39994,40030,40036-40037,40039-40041,40045,40049,40055-40056,40058,40061,40063-40066,40068,40070,40074,400
 77,40080,40082,40086,40089,40101,40104-40106,40108-40110,40118,40120-40126,40129-40131,40148,40160,40169,40181,40183,40195,40235,40238,40241,40252,40255,40257-40259,40263-40264,40268-40269,40271,40284,40290,40300-40306,40311,40313-40316,40318-40320,40324,40333,40353,40357-40358,40364,40368,40376,40378-40382,40395-40398,40400,40405,40421,40428,40434,40458,40472,40481,40513,40523,40536,40538-40539,40546,40604,40677,40689,40692,40704,40716,40723,40736,40851-40853,40872-40873,41072,41294,41393,41395,41397-41398,41448,41457,41470,41483,41496,41522,41662,41870,42056,42119-42120,42220,42258-42261,42424,42433,42892-42894,44021,44048
</span><span class="cx" style="display: block; padding: 0 10px">\ No newline at end of property
</span><a id="branches47srcwpadminincludesajaxactionsphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/4.7/src/wp-admin/includes/ajax-actions.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/4.7/src/wp-admin/includes/ajax-actions.php       2018-12-13 01:39:08 UTC (rev 44055)
+++ branches/4.7/src/wp-admin/includes/ajax-actions.php 2018-12-13 01:40:40 UTC (rev 44056)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -2030,8 +2030,12 @@
</span><span class="cx" style="display: block; padding: 0 10px">                $post_id = null;
</span><span class="cx" style="display: block; padding: 0 10px">        }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-        $post_data = isset( $_REQUEST['post_data'] ) ? $_REQUEST['post_data'] : array();
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $post_data = ! empty( $_REQUEST['post_data'] ) ? _wp_get_allowed_postdata( _wp_translate_postdata( false, (array) $_REQUEST['post_data'] ) ) : array();
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+        if ( is_wp_error( $post_data ) ) {
+               wp_die( $post_data->get_error_message() );
+       }
+
</ins><span class="cx" style="display: block; padding: 0 10px">         // If the context is custom header or background, make sure the uploaded file is an image.
</span><span class="cx" style="display: block; padding: 0 10px">        if ( isset( $post_data['context'] ) && in_array( $post_data['context'], array( 'custom-header', 'custom-background' ) ) ) {
</span><span class="cx" style="display: block; padding: 0 10px">                $wp_filetype = wp_check_filetype_and_ext( $_FILES['async-upload']['tmp_name'], $_FILES['async-upload']['name'] );
</span></span></pre></div>
<a id="branches47srcwpadminincludespostphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/4.7/src/wp-admin/includes/post.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/4.7/src/wp-admin/includes/post.php       2018-12-13 01:39:08 UTC (rev 44055)
+++ branches/4.7/src/wp-admin/includes/post.php 2018-12-13 01:40:40 UTC (rev 44056)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -176,6 +176,27 @@
</span><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"> /**
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ * Returns only allowed post data fields
+ *
+ * @since 4.9.9
+ *
+ * @param array $post_data Array of post data. Defaults to the contents of $_POST.
+ * @return object|bool WP_Error on failure, true on success.
+ */
+function _wp_get_allowed_postdata( $post_data = null ) {
+       if ( empty( $post_data ) ) {
+               $post_data = $_POST;
+       }
+
+       // Pass through errors
+       if ( is_wp_error( $post_data ) ) {
+               return $post_data;
+       }
+
+       return array_diff_key( $post_data, array_flip( array( 'meta_input', 'file', 'guid' ) ) );
+}
+
+/**
</ins><span class="cx" style="display: block; padding: 0 10px">  * Update an existing post with values provided in $_POST.
</span><span class="cx" style="display: block; padding: 0 10px">  *
</span><span class="cx" style="display: block; padding: 0 10px">  * @since 1.5.0
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -243,6 +264,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">        $post_data = _wp_translate_postdata( true, $post_data );
</span><span class="cx" style="display: block; padding: 0 10px">        if ( is_wp_error($post_data) )
</span><span class="cx" style="display: block; padding: 0 10px">                wp_die( $post_data->get_error_message() );
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+        $translated = _wp_get_allowed_postdata( $post_data );
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        // Post Formats
</span><span class="cx" style="display: block; padding: 0 10px">        if ( isset( $post_data['post_format'] ) )
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -322,7 +344,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">                $attachment_data = isset( $post_data['attachments'][ $post_ID ] ) ? $post_data['attachments'][ $post_ID ] : array();
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                /** This filter is documented in wp-admin/includes/media.php */
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                $post_data = apply_filters( 'attachment_fields_to_save', $post_data, $attachment_data );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         $translated = apply_filters( 'attachment_fields_to_save', $translated, $attachment_data );
</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">        // Convert taxonomy input to term IDs, to avoid ambiguity.
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -367,7 +389,7 @@
</span><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"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        $post_data['tax_input'][ $taxonomy ] = $clean_terms;
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                 $translated['tax_input'][ $taxonomy ] = $clean_terms;
</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"> 
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -375,18 +397,18 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        update_post_meta( $post_ID, '_edit_last', get_current_user_id() );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-        $success = wp_update_post( $post_data );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $success = wp_update_post( $translated );
</ins><span class="cx" style="display: block; padding: 0 10px">         // If the save failed, see if we can sanity check the main fields and try again
</span><span class="cx" style="display: block; padding: 0 10px">        if ( ! $success && is_callable( array( $wpdb, 'strip_invalid_text_for_column' ) ) ) {
</span><span class="cx" style="display: block; padding: 0 10px">                $fields = array( 'post_title', 'post_content', 'post_excerpt' );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                foreach ( $fields as $field ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        if ( isset( $post_data[ $field ] ) ) {
-                               $post_data[ $field ] = $wpdb->strip_invalid_text_for_column( $wpdb->posts, $field, $post_data[ $field ] );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                 if ( isset( $translated[ $field ] ) ) {
+                               $translated[ $field ] = $wpdb->strip_invalid_text_for_column( $wpdb->posts, $field, $translated[ $field ] );
</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"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                wp_update_post( $post_data );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         wp_update_post( $translated );
</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">        // Now that we have an ID we can fix any attachment anchor hrefs
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -546,9 +568,9 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        unset( $post_data['tax_input']['category'] );
</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">+                $post_data['post_ID']        = $post_ID;
</ins><span class="cx" style="display: block; padding: 0 10px">                 $post_data['post_type'] = $post->post_type;
</span><span class="cx" style="display: block; padding: 0 10px">                $post_data['post_mime_type'] = $post->post_mime_type;
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                $post_data['guid'] = $post->guid;
</del><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                foreach ( array( 'comment_status', 'ping_status', 'post_author' ) as $field ) {
</span><span class="cx" style="display: block; padding: 0 10px">                        if ( ! isset( $post_data[ $field ] ) ) {
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -556,14 +578,12 @@
</span><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"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                $post_data['ID'] = $post_ID;
-               $post_data['post_ID'] = $post_ID;
-
</del><span class="cx" style="display: block; padding: 0 10px">                 $post_data = _wp_translate_postdata( true, $post_data );
</span><span class="cx" style="display: block; padding: 0 10px">                if ( is_wp_error( $post_data ) ) {
</span><span class="cx" style="display: block; padding: 0 10px">                        $skipped[] = $post_ID;
</span><span class="cx" style="display: block; padding: 0 10px">                        continue;
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                $post_data = _wp_get_allowed_postdata( $post_data );
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                $updated[] = wp_update_post( $post_data );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -574,8 +594,8 @@
</span><span class="cx" style="display: block; padding: 0 10px">                                unstick_post( $post_ID );
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                if ( isset( $post_data['post_format'] ) )
-                       set_post_format( $post_ID, $post_data['post_format'] );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         if ( isset( $shared_post_data['post_format'] ) )
+                       set_post_format( $post_ID, $shared_post_data['post_format'] );
</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">        return array( 'updated' => $updated, 'skipped' => $skipped, 'locked' => $locked );
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -756,9 +776,10 @@
</span><span class="cx" style="display: block; padding: 0 10px">        $translated = _wp_translate_postdata( false );
</span><span class="cx" style="display: block; padding: 0 10px">        if ( is_wp_error($translated) )
</span><span class="cx" style="display: block; padding: 0 10px">                return $translated;
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+        $translated = _wp_get_allowed_postdata( $translated );
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        // Create the post.
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-        $post_ID = wp_insert_post( $_POST );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $post_ID = wp_insert_post( $translated );
</ins><span class="cx" style="display: block; padding: 0 10px">         if ( is_wp_error( $post_ID ) )
</span><span class="cx" style="display: block; padding: 0 10px">                return $post_ID;
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1664,6 +1685,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">        $post_data = _wp_translate_postdata( true, $post_data );
</span><span class="cx" style="display: block; padding: 0 10px">        if ( is_wp_error( $post_data ) )
</span><span class="cx" style="display: block; padding: 0 10px">                return $post_data;
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+        $post_data = _wp_get_allowed_postdata( $post_data );
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        $post_author = get_current_user_id();
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span></span></pre></div>
<a id="branches47srcwpadminpostphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/4.7/src/wp-admin/post.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/4.7/src/wp-admin/post.php        2018-12-13 01:39:08 UTC (rev 44055)
+++ branches/4.7/src/wp-admin/post.php  2018-12-13 01:40:40 UTC (rev 44056)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -189,7 +189,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        // Update the thumbnail filename
</span><span class="cx" style="display: block; padding: 0 10px">        $newmeta = wp_get_attachment_metadata( $post_id, true );
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-        $newmeta['thumb'] = $_POST['thumb'];
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $newmeta['thumb'] = wp_basename( $_POST['thumb'] );
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        wp_update_attachment_metadata( $post_id, $newmeta );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span></span></pre>
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