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<title>[43186] Privacy: Reuse existing archive filenames to maintain URLs.</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/43186">43186</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/43186","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>SergeyBiryukov</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2018-05-09 14:29:25 +0000 (Wed, 09 May 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'>Privacy: Reuse existing archive filenames to maintain URLs.

Whenever an admin initiates a download or email of a personal data export, a fresh copy of the file is generated. Previously, a new filename was used each time, which could lead to situations where a URL that was emailed to a data subject is broken.

That can be avoided by reusing the same filename when building fresh archives.

Props desrosj, tz-media, allendav.
Merges <a href="https://core.trac.wordpress.org/changeset/43180">[43180]</a> to the 4.9 branch.
Fixes <a href="https://core.trac.wordpress.org/ticket/43905">#43905</a>.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#branches49srcwpadminincludesfilephp">branches/4.9/src/wp-admin/includes/file.php</a></li>
</ul>

<h3>Property Changed</h3>
<ul>
<li><a href="#branches49">branches/4.9/</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<span class="cx" style="display: block; padding: 0 10px">Index: branches/4.9
</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/4.9 2018-05-09 01:01:12 UTC (rev 43185)
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+++ branches/4.9  2018-05-09 14:29:25 UTC (rev 43186)
</ins><a id="branches49"></a>
<div class="propset"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Property changes: branches/4.9</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:18512,42132,42134,42136,42138,42140,42144,42146,42148,42150,42152-42153,42155,42157,42159,42161,42163,42169,42171,42173,42175,42177,42181,42183,42185,42187,42189,42191,42193,42199,42203,42210,42214,42220,42222,42226,42242,42244,42247,42251,42256-42261,42350,42358,42362,42364-42368,42374,42388,42390,42401,42417,42421,42423-42425,42430,42433,42437,42441,42443,42446-42447,42449,42451,42453,42457,42459,42462,42491,42521,42529,42531,42533,42536,42538,42541,42543,42545,42549,42566,42568,42570,42572,42574,42576,42579,42581-42582,42584-42585,42587-42588,42590,42592,42594-42595,42598-42599,42602,42604,42606,42611-42613,42615,42617,42624-42625,42639,42648,42652-42653,42665,42687,42697,42711,42713,42719,42722,42739-42740,42744,42758,42772,42791-42792,42801,42814-42815,42817-42818,42823,42830,42837,42839,42841,42844,42851-42852,42860,42864,42881,42888-42889,42892-42894,42930,42964,42967,42971
 -42972,42977-42978,42980,42985-42987,42989,42992,42994-42995,42998-42999,43001-43004,43007-43008,43011-43012,43014-43015,43025,43027,43030,43032,43034,43036,43039,43042,43044-43048,43052-43063,43065,43081,43085,43088-43089,43091,43104,43116,43118,43120-43121,43123,43125-43126,43131-43132,43135,43137,43139,43145-43148,43150,43154-43155,43158,43160,43162,43166,43168,43170,43172,43175,43181
</del><span class="cx" style="display: block; padding: 0 10px">\ No newline at end of property
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+/trunk:18512,42132,42134,42136,42138,42140,42144,42146,42148,42150,42152-42153,42155,42157,42159,42161,42163,42169,42171,42173,42175,42177,42181,42183,42185,42187,42189,42191,42193,42199,42203,42210,42214,42220,42222,42226,42242,42244,42247,42251,42256-42261,42350,42358,42362,42364-42368,42374,42388,42390,42401,42417,42421,42423-42425,42430,42433,42437,42441,42443,42446-42447,42449,42451,42453,42457,42459,42462,42491,42521,42529,42531,42533,42536,42538,42541,42543,42545,42549,42566,42568,42570,42572,42574,42576,42579,42581-42582,42584-42585,42587-42588,42590,42592,42594-42595,42598-42599,42602,42604,42606,42611-42613,42615,42617,42624-42625,42639,42648,42652-42653,42665,42687,42697,42711,42713,42719,42722,42739-42740,42744,42758,42772,42791-42792,42801,42814-42815,42817-42818,42823,42830,42837,42839,42841,42844,42851-42852,42860,42864,42881,42888-42889,42892-42894,42930,42964,42967,42971
 -42972,42977-42978,42980,42985-42987,42989,42992,42994-42995,42998-42999,43001-43004,43007-43008,43011-43012,43014-43015,43025,43027,43030,43032,43034,43036,43039,43042,43044-43048,43052-43063,43065,43081,43085,43088-43089,43091,43104,43116,43118,43120-43121,43123,43125-43126,43131-43132,43135,43137,43139,43145-43148,43150,43154-43155,43158,43160,43162,43166,43168,43170,43172,43175,43180-43181
</ins><span class="cx" style="display: block; padding: 0 10px">\ No newline at end of property
</span><a id="branches49srcwpadminincludesfilephp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/4.9/src/wp-admin/includes/file.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/4.9/src/wp-admin/includes/file.php       2018-05-09 01:01:12 UTC (rev 43185)
+++ branches/4.9/src/wp-admin/includes/file.php 2018-05-09 14:29:25 UTC (rev 43186)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1990,12 +1990,30 @@
</span><span class="cx" style="display: block; padding: 0 10px">        fwrite( $file, "</html>\n" );
</span><span class="cx" style="display: block; padding: 0 10px">        fclose( $file );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-        // Now, generate the ZIP.
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ /*
+        * Now, generate the ZIP.
+        *
+        * If an archive has already been generated, then remove it and reuse the
+        * filename, to avoid breaking any URLs that may have been previously sent
+        * via email.
+        */
</ins><span class="cx" style="display: block; padding: 0 10px">         $error            = false;
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-        $archive_filename = $file_basename . '.zip';
-       $archive_pathname = $exports_dir . $archive_filename;
-       $archive_url      = $exports_url . $archive_filename;
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $archive_url      = get_post_meta( $request_id, '_export_file_url', true );
+       $archive_pathname = get_post_meta( $request_id, '_export_file_path', true );
</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 ( empty( $archive_pathname ) || empty( $archive_url ) ) {
+               $archive_filename = $file_basename . '.zip';
+               $archive_pathname = $exports_dir . $archive_filename;
+               $archive_url      = $exports_url . $archive_filename;
+
+               update_post_meta( $request_id, '_export_file_url', $archive_url );
+               update_post_meta( $request_id, '_export_file_path', $archive_pathname );
+       }
+
+       if ( ! empty( $archive_pathname ) && file_exists( $archive_pathname ) ) {
+               wp_delete_file( $archive_pathname );
+       }
+
</ins><span class="cx" style="display: block; padding: 0 10px">         $zip = new ZipArchive;
</span><span class="cx" style="display: block; padding: 0 10px">        if ( true === $zip->open( $archive_pathname, ZipArchive::CREATE ) ) {
</span><span class="cx" style="display: block; padding: 0 10px">                if ( ! $zip->addFile( $html_report_pathname, 'index.html' ) ) {
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -2026,10 +2044,6 @@
</span><span class="cx" style="display: block; padding: 0 10px">        if ( $error ) {
</span><span class="cx" style="display: block; padding: 0 10px">                wp_send_json_error( $error );
</span><span class="cx" style="display: block; padding: 0 10px">        }
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-
-       // Save the export file in the request.
-       update_post_meta( $request_id, '_export_file_url', $archive_url );
-       update_post_meta( $request_id, '_export_file_path', $archive_pathname );
</del><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">@@ -2205,14 +2219,6 @@
</span><span class="cx" style="display: block; padding: 0 10px">        delete_post_meta( $request_id, '_export_data_raw' );
</span><span class="cx" style="display: block; padding: 0 10px">        update_post_meta( $request_id, '_export_data_grouped', $groups );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-        // And now, generate the export file, cleaning up any previous file
-       $export_path = get_post_meta( $request_id, '_export_file_path', true );
-       if ( ! empty( $export_path ) ) {
-               delete_post_meta( $request_id, '_export_file_path' );
-               @unlink( $export_path );
-       }
-       delete_post_meta( $request_id, '_export_file_url' );
-
</del><span class="cx" style="display: block; padding: 0 10px">         // Generate the export file from the collected, grouped personal data.
</span><span class="cx" style="display: block; padding: 0 10px">        do_action( 'wp_privacy_personal_data_export_file', $request_id );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span></span></pre>
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