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Responsive images: do not attempt to create srcset when the image meta is missing or corrupted.

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Props overclokk, jaspermdegroot, joemcgill.
Fixes #35480.

git-svn-id: https://develop.svn.wordpress.org/trunk@37002 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Andrew Ozz 2016-03-16 02:17:19 +00:00
parent 69a7d21279
commit 1046806376
2 changed files with 74 additions and 1 deletions
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7
src/wp-includes/media.php
View File

@ -985,7 +985,7 @@ function wp_calculate_image_srcset( $size_array, $image_src, $image_meta, $attac
*/
$image_meta = apply_filters( 'wp_calculate_image_srcset_meta', $image_meta, $size_array, $image_src, $attachment_id );
if ( empty( $image_meta['sizes'] ) ) {
if ( empty( $image_meta['sizes'] ) || strlen( $image_meta['file'] ) < 4 ) {
return false;
}
@ -1060,6 +1060,11 @@ function wp_calculate_image_srcset( $size_array, $image_src, $image_meta, $attac
*/
foreach ( $image_sizes as $image ) {
// Check if image meta isn't corrupted.
if ( ! is_array( $image ) ) {
continue;
}
// 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;

68
tests/phpunit/tests/media.php
View File

@ -1128,6 +1128,74 @@ EOF;
$this->assertSame( $expected_srcset, wp_calculate_image_srcset( $size_array, $image_src, $image_meta ) );
}
/**
* @ticket 35480
*/
function test_wp_calculate_image_srcset_corrupted_image_meta() {
$size_array = array( 300, 150 );
$image_src = 'http://' . WP_TESTS_DOMAIN . '/wp-content/uploads/2015/12/test-300x150.png';
$image_meta = array(
'width' => 1600,
'height' => 800,
'file' => '2015/12/test.png',
'sizes' => array(
'thumbnail' => array(
'file' => 'test-150x150.png',
'width' => 150,
'height' => 150,
'mime-type' => 'image/png',
),
'medium' => array(
'file' => 'test-300x150.png',
'width' => 300,
'height' => 150,
'mime-type' => 'image/png',
),
'medium_large' => array(
'file' => 'test-768x384.png',
'width' => 768,
'height' => 384,
'mime-type' => 'image/png',
),
'large' => array(
'file' => 'test-1024x512.png',
'width' => 1024,
'height' => 512,
'mime-type' => 'image/png',
),
),
);
$srcset = array(
300 => 'http://' . WP_TESTS_DOMAIN . '/wp-content/uploads/2015/12/test-300x150.png 300w',
768 => 'http://' . WP_TESTS_DOMAIN . '/wp-content/uploads/2015/12/test-768x384.png 768w',
1024 => 'http://' . WP_TESTS_DOMAIN . '/wp-content/uploads/2015/12/test-1024x512.png 1024w',
1600 => 'http://' . WP_TESTS_DOMAIN . '/wp-content/uploads/2015/12/test.png 1600w',
);
// No sizes array
$image_meta1 = $image_meta;
unset( $image_meta1['sizes'] );
$this->assertFalse( wp_calculate_image_srcset( $size_array, $image_src, $image_meta1 ) );
// Sizes is string instead of array; only full size available means no srcset.
$image_meta2 = $image_meta;
$image_meta2['sizes'] = '';
$this->assertFalse( wp_calculate_image_srcset( $size_array, $image_src, $image_meta2 ) );
// File name is incorrect
$image_meta4 = $image_meta;
$image_meta4['file'] = '/';
$this->assertFalse( wp_calculate_image_srcset( $size_array, $image_src, $image_meta4 ) );
// Intermediate size is string instead of array.
$image_meta3 = $image_meta;
$image_meta3['sizes']['medium_large'] = '';
unset( $srcset[768] );
$expected_srcset = implode( ', ', $srcset );
$this->assertSame( $expected_srcset, wp_calculate_image_srcset( $size_array, $image_src, $image_meta3 ) );
}
/**
* @ticket 33641
*/