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<title>[42230] branches/4.8: WPDB: Check that `AUTH_SALT` is not empty, Fix a PHP notice when `AUTH_SALT` is undefined.</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/42230">42230</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/42230","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>dd32</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2017-11-27 01:06:27 +0000 (Mon, 27 Nov 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'>WPDB: Check that `AUTH_SALT` is not empty, Fix a PHP notice when `AUTH_SALT` is undefined.
Props jsonfry, mkomar, pento.
Merges <a href="https://core.trac.wordpress.org/changeset/42119">[42119]</a> and <a href="https://core.trac.wordpress.org/changeset/42120">[42120]</a> to the 4.8 branch.
Fixes <a href="https://core.trac.wordpress.org/ticket/42431">#42431</a> and <a href="https://core.trac.wordpress.org/ticket/42401">#42401</a> for 4.8.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#branches48srcwpincludeswpdbphp">branches/4.8/src/wp-includes/wp-db.php</a></li>
</ul>
<h3>Property Changed</h3>
<ul>
<li><a href="#branches48">branches/4.8/</a></li>
</ul>
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<div id="patch">
<h3>Diff</h3>
<span class="cx" style="display: block; padding: 0 10px">Index: branches/4.8
</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/4.8 2017-11-27 00:55:11 UTC (rev 42229)
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+++ branches/4.8 2017-11-27 01:06:27 UTC (rev 42230)
</ins><a id="branches48"></a>
<div class="propset"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Property changes: branches/4.8</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:18512,40872-40873,40879,40881,40883,40885,40892-40893,40896-40897,40901,40926-40927,40939,40941,40961,40990-40991,40995,41000,41009,41020,41022,41028,41035,41037,41047,41050,41070,41072,41086,41088,41094,41112,41115-41116,41132,41134,41136,41139,41141,41250-41251,41260,41294,41335,41386,41393,41395,41397-41398,41448,41457,41470,41483,41496,41636,41662,41870,42056
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+/trunk:18512,40872-40873,40879,40881,40883,40885,40892-40893,40896-40897,40901,40926-40927,40939,40941,40961,40990-40991,40995,41000,41009,41020,41022,41028,41035,41037,41047,41050,41070,41072,41086,41088,41094,41112,41115-41116,41132,41134,41136,41139,41141,41250-41251,41260,41294,41335,41386,41393,41395,41397-41398,41448,41457,41470,41483,41496,41636,41662,41870,42056,42119-42120
</ins><span class="cx" style="display: block; padding: 0 10px">\ No newline at end of property
</span><a id="branches48srcwpincludeswpdbphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/4.8/src/wp-includes/wp-db.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/4.8/src/wp-includes/wp-db.php 2017-11-27 00:55:11 UTC (rev 42229)
+++ branches/4.8/src/wp-includes/wp-db.php 2017-11-27 01:06:27 UTC (rev 42230)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1964,7 +1964,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> // If ext/hash is not present, compat.php's hash_hmac() does not support sha256.
</span><span class="cx" style="display: block; padding: 0 10px"> $algo = function_exists( 'hash' ) ? 'sha256' : 'sha1';
</span><span class="cx" style="display: block; padding: 0 10px"> // Old WP installs may not have AUTH_SALT defined.
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- $salt = defined( 'AUTH_SALT' ) ? AUTH_SALT : rand();
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $salt = defined( 'AUTH_SALT' ) && AUTH_SALT ? AUTH_SALT : (string) rand();
</ins><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> $placeholder = '{' . hash_hmac( $algo, uniqid( $salt, true ), $salt ) . '}';
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span></span></pre>
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