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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/41502">41502</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/41502","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>aaroncampbell</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2017-09-19 18:27:47 +0000 (Tue, 19 Sep 2017)</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'>Database: Hardening to bring `wpdb::prepare()` inline with documentation.

`wpdb::prepare()` supports %s, %d, and %F as placeholders in the query string. Any other non-escaped % will be escaped.

Merges <a href="https://core.trac.wordpress.org/changeset/41496">[41496]</a> to 4.3 branch.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#branches43srcwpincludeswpdbphp">branches/4.3/src/wp-includes/wp-db.php</a></li>
<li><a href="#branches43testsphpunittestsdbphp">branches/4.3/tests/phpunit/tests/db.php</a></li>
</ul>

<h3>Property Changed</h3>
<ul>
<li><a href="#branches43">branches/4.3/</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<span class="cx" style="display: block; padding: 0 10px">Index: branches/4.3
</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/4.3 2017-09-19 18:14:33 UTC (rev 41501)
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+++ branches/4.3  2017-09-19 18:27:47 UTC (rev 41502)
</ins><a id="branches43"></a>
<div class="propset"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Property changes: branches/4.3</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/4.4:41434
</span><span class="cx" style="display: block; padding: 0 10px"> /branches/4.5:41415-41416
</span><span class="cx" style="display: block; padding: 0 10px"> /branches/4.6:38615,41414
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-/trunk:33646,33681,33688,33693,33710,33716,33727,33766,34094,34179,34219,34278,34788,34829,34834,36083,36435,37124,37651,38524,39645,39659,39759,39772,39795,39807-39808,39831,39850,39956,40148,40160,40169,40183,40195,40241,40255,40257-40259,40269,40271,40400,40538,40604,40677,40692,40704,40716,40723,40736,41072,41393,41395,41398,41457,41470,41483
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+/trunk:33646,33681,33688,33693,33710,33716,33727,33766,34094,34179,34219,34278,34788,34829,34834,36083,36435,37124,37651,38524,39645,39659,39759,39772,39795,39807-39808,39831,39850,39956,40148,40160,40169,40183,40195,40241,40255,40257-40259,40269,40271,40400,40538,40604,40677,40692,40704,40716,40723,40736,41072,41393,41395,41398,41457,41470,41483,41496
</ins><span class="cx" style="display: block; padding: 0 10px">\ No newline at end of property
</span><a id="branches43srcwpincludeswpdbphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/4.3/src/wp-includes/wp-db.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/4.3/src/wp-includes/wp-db.php    2017-09-19 18:14:33 UTC (rev 41501)
+++ branches/4.3/src/wp-includes/wp-db.php      2017-09-19 18:27:47 UTC (rev 41502)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1234,6 +1234,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">                $query = str_replace( '"%s"', '%s', $query ); // doublequote unquoting
</span><span class="cx" style="display: block; padding: 0 10px">                $query = preg_replace( '|(?<!%)%f|' , '%F', $query ); // Force floats to be locale unaware
</span><span class="cx" style="display: block; padding: 0 10px">                $query = preg_replace( '|(?<!%)%s|', "'%s'", $query ); // quote the strings, avoiding escaped strings like %%s
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                $query = preg_replace( '/%(?:%|$|([^dsF]))/', '%%\\1', $query ); // escape any unescaped percents 
</ins><span class="cx" style="display: block; padding: 0 10px">                 array_walk( $args, array( $this, 'escape_by_ref' ) );
</span><span class="cx" style="display: block; padding: 0 10px">                return @vsprintf( $query, $args );
</span><span class="cx" style="display: block; padding: 0 10px">        }
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -2731,7 +2732,8 @@
</span><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">                                        if ( is_array( $value['length'] ) ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                                $queries[ $col ] = $this->prepare( "CONVERT( LEFT( CONVERT( %s USING $charset ), %.0f ) USING {$this->charset} )", $value['value'], $value['length']['length'] );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                                         $length = sprintf( '%.0f', $value['length']['length'] );
+                                               $queries[ $col ] = $this->prepare( "CONVERT( LEFT( CONVERT( %s USING $charset ), $length ) USING {$this->charset} )", $value['value'] );
</ins><span class="cx" style="display: block; padding: 0 10px">                                         } else if ( 'binary' !== $charset ) {
</span><span class="cx" style="display: block; padding: 0 10px">                                                // If we don't have a length, there's no need to convert binary - it will always return the same result.
</span><span class="cx" style="display: block; padding: 0 10px">                                                $queries[ $col ] = $this->prepare( "CONVERT( CONVERT( %s USING $charset ) USING {$this->charset} )", $value['value'] );
</span></span></pre></div>
<a id="branches43testsphpunittestsdbphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/4.3/tests/phpunit/tests/db.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/4.3/tests/phpunit/tests/db.php   2017-09-19 18:14:33 UTC (rev 41501)
+++ branches/4.3/tests/phpunit/tests/db.php     2017-09-19 18:27:47 UTC (rev 41502)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -847,5 +847,15 @@
</span><span class="cx" style="display: block; padding: 0 10px">        function filter_pre_get_col_charset( $charset, $table, $column ) {
</span><span class="cx" style="display: block; padding: 0 10px">                return 'fake_col_charset';
</span><span class="cx" style="display: block; padding: 0 10px">        }
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+       /**
+        *
+        */
+       function test_prepare_with_unescaped_percents() {
+               global $wpdb;
+
+               $sql = $wpdb->prepare( '%d %1$d %%% %', 1 );
+               $this->assertEquals( '1 %1$d %% %', $sql );
+       }
</ins><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span></span></pre>
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