Changeset 36121 for trunk/src/wp-includes/media.php

Timestamp:

12/30/2015 01:03:11 AM (11 years ago)

Author:

azaozz

Message:

Responsive images: fix the check whether the attachment meta matches the image src to work with http/https and CDNs.

Props webaware, joemcgill, azaozz.
Fixes #35045 and #35102 for trunk.

File:

• trunk/src/wp-includes/media.php (modified) (7 diffs)

trunk/src/wp-includes/media.php

@@ -997 +997 @@
  */
 function wp_calculate_image_srcset( $size_array, $image_src, $image_meta, $attachment_id = 0 ) {
+        /**
+         * Let plugins pre-filter the image meta to be able to fix inconsistencies in the stored data.
+         *
+         * @param array  $image_meta    The image meta data as returned by 'wp_get_attachment_metadata()'.
+         * @param array  $size_array    Array of width and height values in pixels (in that order).
+         * @param string $image_src     The 'src' of the image.
+         * @param int    $attachment_id The image attachment ID or 0 if not supplied.
+         */
+        $image_meta = apply_filters( 'wp_calculate_image_srcset_meta', $image_meta, $size_array, $image_src, $attachment_id );
+
         if ( empty( $image_meta['sizes'] ) ) {
                 return false;
@@ -1013 +1023 @@
 
         $image_basename = wp_basename( $image_meta['file'] );
-        $image_baseurl = _wp_upload_dir_baseurl();
 
         /*
@@ -1030 +1039 @@
         }
 
-        // Uploads are (or have been) in year/month sub-directories.
-        if ( $image_basename !== $image_meta['file'] ) {
-                $dirname = _wp_get_attachment_relative_path( $image_meta['file'] );
-
-                if ( $dirname ) {
-                        $image_baseurl = trailingslashit( $image_baseurl ) . $dirname;
-                }
-        }
-
-        $image_baseurl = trailingslashit( $image_baseurl );
+        // Retrieve the uploads sub-directory from the full size image.
+        $dirname = _wp_get_attachment_relative_path( $image_meta['file'] );
+
+        if ( $dirname ) {
+                $dirname = trailingslashit( $dirname );
+        }
+
+        $image_baseurl = _wp_upload_dir_baseurl();
+        $image_baseurl = trailingslashit( $image_baseurl ) . $dirname;
 
         /*
@@ -1061 +1069 @@
         $sources = array();
 
+        /**
+         * To make sure the ID matches our image src, we will check to see if any sizes in our attachment
+         * meta match our $image_src. If no mathces are found we don't return a srcset to avoid serving
+         * an incorrect image. See #35045.
+         */
+        $src_matched = false;
+
         /*
          * Loop through available images. Only use images that are resized
@@ -1066 +1081 @@
          */
         foreach ( $image_sizes as $image ) {
+
+                // If the file name is part of the `src`, we've confirmed a match.
+                if ( ! $src_matched && false !== strpos( $image_src, $dirname . $image['file'] ) ) {
+                        $src_matched = true;
+                }
 
                 // Filter out images that are from previous edits.
@@ -1130 +1150 @@
 
         // Only return a 'srcset' value if there is more than one source.
-        if ( count( $sources ) < 2 ) {
+        if ( ! $src_matched || count( $sources ) < 2 ) {
                 return false;
         }
@@ -1309 +1329 @@
                 strpos( wp_basename( $image_src ), $img_edit_hash[0] ) === false ) {
 
-                return $image;
-        }
-
-        $base_url = trailingslashit( _wp_upload_dir_baseurl() );
-        $image_base_url = $base_url;
-
-        $dirname = _wp_get_attachment_relative_path( $image_meta['file'] );
-        if ( $dirname ) {
-                $image_base_url .= trailingslashit( $dirname );
-        }
-
-        $all_sizes = wp_list_pluck( $image_meta['sizes'], 'file' );
-
-        foreach ( $all_sizes as $key => $file ) {
-                $all_sizes[ $key ] = $image_base_url . $file;
-        }
-
-        // Add the original image.
-        $all_sizes[] = $image_base_url . basename( $image_meta['file'] );
-
-        // Bail early if the image src doesn't match any of the known image sizes.
-        if ( ! in_array( $image_src, $all_sizes ) ) {
                 return $image;
         }