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<title>[43076] branches/4.9/src/wp-includes/default-filters.php: Privacy: add functionality for exporting personal data from comments.</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/43076">43076</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/43076","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>2018-05-02 00:10:36 +0000 (Wed, 02 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: add functionality for exporting personal data from comments.

Props allendav, xkon.
Merges <a href="https://core.trac.wordpress.org/changeset/42888">[42888]</a> to the 4.9 branch.
See <a href="https://core.trac.wordpress.org/ticket/43440">#43440</a>.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#branches49srcwpincludescommentphp">branches/4.9/src/wp-includes/comment.php</a></li>
<li><a href="#branches49srcwpincludesdefaultfiltersphp">branches/4.9/src/wp-includes/default-filters.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 2018-05-02 00:02:01 UTC (rev 43075)
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+++ branches/4.9  2018-05-02 00:10:36 UTC (rev 43076)
</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:18512,42132,42134,42136,42138,42140,42144,42146,42148,42150,42152-42153,42155,42157,42159,42161,42163,42169,42171,42173,42175,42177,42181,42183,42185,42187,42189,42191,42193,42199,42203,42210,42214,42220,42222,42226,42242,42244,42247,42251,42256-42261,42350,42358,42362,42364-42368,42374,42388,42390,42401,42417,42421,42423-42425,42430,42433,42437,42441,42443,42446-42447,42449,42451,42453,42457,42459,42462,42491,42521,42529,42531,42533,42536,42538,42541,42543,42545,42549,42566,42568,42570,42572,42574,42576,42579,42581-42582,42584-42585,42587-42588,42590,42592,42594-42595,42598-42599,42602,42604,42606,42611-42613,42615,42617,42624-42625,42639,42648,42652-42653,42665,42687,42711,42713,42719,42722,42739-42740,42744,42758,42791-42792,42801,42817-42818,42830,42837,42839,42841,42844,42851-42852,42860,42864,42881,42889,42892-42894,42930,42964,42967,42972,42977,42986,42998,43001,43004,43007
 ,43025,43027,43030,43032,43034,43036,43039,43056,43062-43063,43065
</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:18512,42132,42134,42136,42138,42140,42144,42146,42148,42150,42152-42153,42155,42157,42159,42161,42163,42169,42171,42173,42175,42177,42181,42183,42185,42187,42189,42191,42193,42199,42203,42210,42214,42220,42222,42226,42242,42244,42247,42251,42256-42261,42350,42358,42362,42364-42368,42374,42388,42390,42401,42417,42421,42423-42425,42430,42433,42437,42441,42443,42446-42447,42449,42451,42453,42457,42459,42462,42491,42521,42529,42531,42533,42536,42538,42541,42543,42545,42549,42566,42568,42570,42572,42574,42576,42579,42581-42582,42584-42585,42587-42588,42590,42592,42594-42595,42598-42599,42602,42604,42606,42611-42613,42615,42617,42624-42625,42639,42648,42652-42653,42665,42687,42711,42713,42719,42722,42739-42740,42744,42758,42791-42792,42801,42817-42818,42830,42837,42839,42841,42844,42851-42852,42860,42864,42881,42888-42889,42892-42894,42930,42964,42967,42972,42977,42986,42998,43001,43004
 ,43007,43025,43027,43030,43032,43034,43036,43039,43056,43062-43063,43065
</ins><span class="cx" style="display: block; padding: 0 10px">\ No newline at end of property
</span><a id="branches49srcwpincludescommentphp"></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-includes/comment.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/4.9/src/wp-includes/comment.php  2018-05-02 00:02:01 UTC (rev 43075)
+++ branches/4.9/src/wp-includes/comment.php    2018-05-02 00:10:36 UTC (rev 43076)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -3145,3 +3145,104 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        return get_comment( $comment_id );
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+/**
+ * Registers the personal data exporter for comments
+ *
+ * @param array   $exporters   An array of personal data exporters.
+ * @return array  An array of personal data exporters.
+ */
+function wp_register_comment_personal_data_exporter( $exporters ) {
+       $exporters[] = array(
+               'exporter_friendly_name' => __( 'WordPress Comments' ),
+               'callback'               => 'wp_comments_personal_data_exporter',
+       );
+
+       return $exporters;
+}
+
+/**
+ * Finds and exports personal data associated with an email address from the comments table.
+ *
+ * @param string  $email_address The comment author email address.
+ * @param int     $page          Comment page.
+ * @return array  An array of personal data.
+ */
+function wp_comments_personal_data_exporter( $email_address, $page = 1 ) {
+
+       // Technically, strtolower isn't necessary since get_comments will match email insensitive
+       // But it is a good example for plugin developers whose targets might not be as generous
+       $email_address = trim( strtolower( $email_address ) );
+
+       // Limit us to 500 comments at a time to avoid timing out
+       $number = 500;
+       $page = (int) $page;
+
+       $data_to_export = array();
+
+       $comments = get_comments(
+               array(
+                       'author_email' => $email_address,
+                       'number'       => $number,
+                       'paged'        => $page,
+                       'order_by'     => 'comment_ID',
+                       'order'        => 'ASC',
+               )
+       );
+
+       $comment_prop_to_export = array(
+               'comment_author'       => __( 'Comment Author' ),
+               'comment_author_email' => __( 'Comment Author Email' ),
+               'comment_author_url'   => __( 'Comment Author URL' ),
+               'comment_author_IP'    => __( 'Comment Author IP' ),
+               'comment_agent'        => __( 'Comment Agent' ),
+               'comment_date'         => __( 'Comment Date' ),
+               'comment_content'      => __( 'Comment Content' ),
+               'comment_link'         => __( 'Comment URL' ),
+       );
+
+       foreach ( (array) $comments as $comment ) {
+               $comment_data_to_export = array();
+
+               foreach ( $comment_prop_to_export as $key => $name ) {
+                       $value = '';
+
+                       switch( $key ) {
+                               case 'comment_author':
+                               case 'comment_author_email':
+                               case 'comment_author_url':
+                               case 'comment_author_IP':
+                               case 'comment_agent':
+                               case 'comment_date':
+                                       $value = $comment->$key;
+                                       break;
+
+                               case 'comment_content':
+                                       $value = get_comment_text( $comment->comment_ID );
+                                       break;
+
+                               case 'comment_link':
+                                       $value = get_comment_link( $comment->comment_ID );
+                                       break;
+                       }
+
+                       if ( ! empty( $value ) ) {
+                               $comment_data_to_export[] = array( 'name' => $name, 'value' => $value );
+                       }
+               }
+
+               $data_to_export[] = array(
+                       'group_id'    => 'comments',
+                       'group_label' => __( 'Comments' ),
+                       'item_id'     => "comment-{$comment->comment_ID}",
+                       'data'        => $comment_data_to_export,
+               );
+       }
+
+       $done = count( $comments ) < $number;
+
+       return array(
+               'data' => $data_to_export,
+               'done' => $done,
+       );
+}
</ins></span></pre></div>
<a id="branches49srcwpincludesdefaultfiltersphp"></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-includes/default-filters.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/4.9/src/wp-includes/default-filters.php  2018-05-02 00:02:01 UTC (rev 43075)
+++ branches/4.9/src/wp-includes/default-filters.php    2018-05-02 00:10:36 UTC (rev 43076)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -301,6 +301,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> add_action( 'do_pings',                   'do_all_pings',                            10, 1 );
</span><span class="cx" style="display: block; padding: 0 10px"> add_action( 'do_robots',                  'do_robots'                                      );
</span><span class="cx" style="display: block; padding: 0 10px"> add_action( 'set_comment_cookies',        'wp_set_comment_cookies',                  10, 2 );
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+add_filter( 'wp_privacy_personal_data_exporters', 'wp_register_comment_personal_data_exporter', 10 );
</ins><span class="cx" style="display: block; padding: 0 10px"> add_action( 'sanitize_comment_cookies',   'sanitize_comment_cookies'                       );
</span><span class="cx" style="display: block; padding: 0 10px"> add_action( 'admin_print_scripts',        'print_emoji_detection_script'                   );
</span><span class="cx" style="display: block; padding: 0 10px"> add_action( 'admin_print_scripts',        'print_head_scripts',                      20    );
</span></span></pre>
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