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<title>[40133] branches/4.7: Media: Keep PDF previews from overwriting files.</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/40133">40133</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/40133","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>joemcgill</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2017-02-27 19:24:50 +0000 (Mon, 27 Feb 2017)</dd>
</dl>
<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: Keep PDF previews from overwriting files.
Since support for PDF previews were added in <a href="https://core.trac.wordpress.org/changeset/38949">[38949]</a>, it's possible
that the generated image file could overwrite an existing image file
with the same name. This uses wp_unique_filename() to avoid this
issue and adds a '-pdf' identifier on the end of filenames.
Props gitlost, desrosj, mikeschroder, joemcgill.
Merges <a href="https://core.trac.wordpress.org/changeset/40130">[40130]</a> and <a href="https://core.trac.wordpress.org/changeset/40131">[40131]</a> to the 4.7 branch.
Fixes <a href="https://core.trac.wordpress.org/ticket/39875">#39875</a>. See <a href="https://core.trac.wordpress.org/ticket/31050">#31050</a>.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#branches47srcwpadminincludesimagephp">branches/4.7/src/wp-admin/includes/image.php</a></li>
<li><a href="#branches47testsphpunittestsimagefunctionsphp">branches/4.7/tests/phpunit/tests/image/functions.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 2017-02-27 19:20:58 UTC (rev 40132)
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+++ branches/4.7 2017-02-27 19:24:50 UTC (rev 40133)
</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/3.1:18031
</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:18512,39365,39367,39369,39371,39373,39375-39376,39378,39380,39382,39384,39386,39388,39390,39392-39393,39396-39397,39400,39402,39404,39406,39409,39411,39413,39415,39417-39420,39424,39426,39428,39430,39432-39434,39436,39438,39440,39442-39444,39447,39449-39451,39453,39455-39457,39460,39462,39464,39466,39468,39470-39471,39475,39477-39478,39482-39483,39487-39488,39490,39495-39496,39499,39502,39504,39506,39508,39510,39512,39514,39517,39520,39522,39545-39547,39557-39563,39565,39578,39580-39581,39584,39586,39594-39595,39597-39599,39601,39603,39612-39613,39616-39617,39619-39623,39626,39635,39640,39645,39649,39657,39659,39663,39677-39678,39680-39681,39684-39686,39688-39689,39692,39720,39742,39744,39759-39760,39772,39795,39807-39808,39831,39843,39848,39850,39912,39914,39923-39924,39949,39951-39952,39954,39956,39968,39992,39994,40030,40036,40039-40041,40045,40049,40055,40058,40061,40063-40066
,40068,40070,40074,40077,40080,40082,40086,40089,40101,40104-40106,40108-40110,40118,40126
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+/trunk:18512,39365,39367,39369,39371,39373,39375-39376,39378,39380,39382,39384,39386,39388,39390,39392-39393,39396-39397,39400,39402,39404,39406,39409,39411,39413,39415,39417-39420,39424,39426,39428,39430,39432-39434,39436,39438,39440,39442-39444,39447,39449-39451,39453,39455-39457,39460,39462,39464,39466,39468,39470-39471,39475,39477-39478,39482-39483,39487-39488,39490,39495-39496,39499,39502,39504,39506,39508,39510,39512,39514,39517,39520,39522,39545-39547,39557-39563,39565,39578,39580-39581,39584,39586,39594-39595,39597-39599,39601,39603,39612-39613,39616-39617,39619-39623,39626,39635,39640,39645,39649,39657,39659,39663,39677-39678,39680-39681,39684-39686,39688-39689,39692,39720,39742,39744,39759-39760,39772,39795,39807-39808,39831,39843,39848,39850,39912,39914,39923-39924,39949,39951-39952,39954,39956,39968,39992,39994,40030,40036,40039-40041,40045,40049,40055,40058,40061,40063-40066,
40068,40070,40074,40077,40080,40082,40086,40089,40101,40104-40106,40108-40110,40118,40126,40130-40131
</ins><span class="cx" style="display: block; padding: 0 10px">\ No newline at end of property
</span><a id="branches47srcwpadminincludesimagephp"></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/image.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/4.7/src/wp-admin/includes/image.php 2017-02-27 19:20:58 UTC (rev 40132)
+++ branches/4.7/src/wp-admin/includes/image.php 2017-02-27 19:24:50 UTC (rev 40133)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -251,7 +251,15 @@
</span><span class="cx" style="display: block; padding: 0 10px"> $editor = wp_get_image_editor( $file );
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> if ( ! is_wp_error( $editor ) ) { // No support for this type of file
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- $uploaded = $editor->save( $file, 'image/jpeg' );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ /*
+ * PDFs may have the same file filename as JPEGs.
+ * Ensure the PDF preview image does not overwrite any JPEG images that already exist.
+ */
+ $dirname = dirname( $file ) . '/';
+ $ext = '.' . pathinfo( $file, PATHINFO_EXTENSION );
+ $preview_file = $dirname . wp_unique_filename( $dirname, wp_basename( $file, $ext ) . '-pdf.jpg' );
+
+ $uploaded = $editor->save( $preview_file, 'image/jpeg' );
</ins><span class="cx" style="display: block; padding: 0 10px"> unset( $editor );
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> // Resize based on the full size image, rather than the source.
</span></span></pre></div>
<a id="branches47testsphpunittestsimagefunctionsphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/4.7/tests/phpunit/tests/image/functions.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/4.7/tests/phpunit/tests/image/functions.php 2017-02-27 19:20:58 UTC (rev 40132)
+++ branches/4.7/tests/phpunit/tests/image/functions.php 2017-02-27 19:24:50 UTC (rev 40133)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -18,6 +18,13 @@
</span><span class="cx" style="display: block; padding: 0 10px"> require_once( ABSPATH . WPINC . '/class-wp-image-editor-imagick.php' );
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> include_once( DIR_TESTDATA . '/../includes/mock-image-editor.php' );
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+ // Ensure no legacy / failed tests detritus.
+ $folder = '/tmp/wordpress-gsoc-flyer*.{jpg,pdf}';
+
+ foreach ( glob( $folder, GLOB_BRACE ) as $file ) {
+ unlink( $file );
+ }
</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">@@ -373,25 +380,25 @@
</span><span class="cx" style="display: block; padding: 0 10px"> $expected = array(
</span><span class="cx" style="display: block; padding: 0 10px"> 'sizes' => array(
</span><span class="cx" style="display: block; padding: 0 10px"> 'thumbnail' => array(
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- 'file' => "wordpress-gsoc-flyer-116x150.jpg",
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ 'file' => "wordpress-gsoc-flyer-pdf-116x150.jpg",
</ins><span class="cx" style="display: block; padding: 0 10px"> 'width' => 116,
</span><span class="cx" style="display: block; padding: 0 10px"> 'height' => 150,
</span><span class="cx" style="display: block; padding: 0 10px"> 'mime-type' => "image/jpeg",
</span><span class="cx" style="display: block; padding: 0 10px"> ),
</span><span class="cx" style="display: block; padding: 0 10px"> 'medium' => array(
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- 'file' => "wordpress-gsoc-flyer-232x300.jpg",
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ 'file' => "wordpress-gsoc-flyer-pdf-232x300.jpg",
</ins><span class="cx" style="display: block; padding: 0 10px"> 'width' => 232,
</span><span class="cx" style="display: block; padding: 0 10px"> 'height' => 300,
</span><span class="cx" style="display: block; padding: 0 10px"> 'mime-type' => "image/jpeg",
</span><span class="cx" style="display: block; padding: 0 10px"> ),
</span><span class="cx" style="display: block; padding: 0 10px"> 'large' => array(
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- 'file' => "wordpress-gsoc-flyer-791x1024.jpg",
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ 'file' => "wordpress-gsoc-flyer-pdf-791x1024.jpg",
</ins><span class="cx" style="display: block; padding: 0 10px"> 'width' => 791,
</span><span class="cx" style="display: block; padding: 0 10px"> 'height' => 1024,
</span><span class="cx" style="display: block; padding: 0 10px"> 'mime-type' => "image/jpeg",
</span><span class="cx" style="display: block; padding: 0 10px"> ),
</span><span class="cx" style="display: block; padding: 0 10px"> 'full' => array(
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- 'file' => "wordpress-gsoc-flyer.jpg",
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ 'file' => "wordpress-gsoc-flyer-pdf.jpg",
</ins><span class="cx" style="display: block; padding: 0 10px"> 'width' => 1088,
</span><span class="cx" style="display: block; padding: 0 10px"> 'height' => 1408,
</span><span class="cx" style="display: block; padding: 0 10px"> 'mime-type' => "image/jpeg",
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -403,6 +410,9 @@
</span><span class="cx" style="display: block; padding: 0 10px"> $this->assertSame( $expected, $metadata );
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> unlink( $test_file );
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ foreach ( $metadata['sizes'] as $size ) {
+ unlink ( '/tmp/' . $size['file'] );
+ }
</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">@@ -427,7 +437,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> add_filter( 'fallback_intermediate_image_sizes', array( $this, 'filter_fallback_intermediate_image_sizes' ), 10, 2 );
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> $expected = array(
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- 'file' => 'wordpress-gsoc-flyer-77x100.jpg',
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ 'file' => 'wordpress-gsoc-flyer-pdf-77x100.jpg',
</ins><span class="cx" style="display: block; padding: 0 10px"> 'width' => 77,
</span><span class="cx" style="display: block; padding: 0 10px"> 'height' => 100,
</span><span class="cx" style="display: block; padding: 0 10px"> 'mime-type' => 'image/jpeg',
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -441,6 +451,9 @@
</span><span class="cx" style="display: block; padding: 0 10px"> remove_filter( 'fallback_intermediate_image_sizes', array( $this, 'filter_fallback_intermediate_image_sizes' ), 10 );
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> unlink( $test_file );
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ foreach ( $metadata['sizes'] as $size ) {
+ unlink ( '/tmp/' . $size['file'] );
+ }
</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"> function filter_fallback_intermediate_image_sizes( $fallback_sizes, $metadata ) {
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -449,4 +462,48 @@
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> return $fallback_sizes;
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+ /**
+ * Test PDF preview doesn't overwrite existing JPEG.
+ * @ticket 39875
+ */
+ public function test_pdf_preview_doesnt_overwrite_existing_jpeg() {
+ if ( ! wp_image_editor_supports( array( 'mime_type' => 'application/pdf' ) ) ) {
+ $this->markTestSkipped( 'Rendering PDFs is not supported on this system.' );
+ }
+
+ // Dummy JPEGs.
+ $jpg1_path = '/tmp/test.jpg'; // Straight.
+ file_put_contents( $jpg1_path, 'asdf' );
+ $jpg2_path = '/tmp/test-pdf.jpg'; // With PDF marker.
+ file_put_contents( $jpg2_path, 'fdsa' );
+
+ // PDF with same name as JPEG.
+ $pdf_path = '/tmp/test.pdf';
+ copy( DIR_TESTDATA . '/images/wordpress-gsoc-flyer.pdf', $pdf_path );
+
+ $attachment_id = $this->factory->attachment->create_object( $pdf_path, 0, array(
+ 'post_mime_type' => 'application/pdf',
+ ) );
+
+ $metadata = wp_generate_attachment_metadata( $attachment_id, $pdf_path );
+ $preview_path = '/tmp/' . $metadata['sizes']['full']['file'];
+
+ // PDF preview didn't overwrite PDF.
+ $this->assertNotEquals( $pdf_path, $preview_path );
+ // PDF preview didn't overwrite JPG with same name.
+ $this->assertNotEquals( $jpg1_path, $preview_path );
+ $this->assertSame( 'asdf', file_get_contents( $jpg1_path ) );
+ // PDF preview didn't overwrite PDF preview with same name.
+ $this->assertNotEquals( $jpg2_path, $preview_path );
+ $this->assertSame( 'fdsa', file_get_contents( $jpg2_path ) );
+
+ // Cleanup.
+ unlink( $jpg1_path );
+ unlink( $jpg2_path );
+ unlink( $pdf_path );
+ foreach ( $metadata['sizes'] as $size ) {
+ unlink( '/tmp/' . $size['file'] );
+ }
+ }
</ins><span class="cx" style="display: block; padding: 0 10px"> }
</span></span></pre>
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