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WPDB: Fix a PHP notice when AUTH_SALT is undefined.

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In `wpdb::placeholder_escape()`, the key for `hash_hmac()` falls back to `rand()` when `AUTH_SALT` is undefined. `hash_hmac()` requires the key to be a string, however, so we need to cast it as such.

Props mkomar.
Fixes #42401.


Built from https://develop.svn.wordpress.org/trunk@42119


git-svn-id: http://core.svn.wordpress.org/trunk@41948 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
Gary Pendergast 2017-11-07 00:30:46 +00:00
parent a74afff787
commit 002d65112f
2 changed files with 2 additions and 2 deletions
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2
wp-includes/version.php
View File

@ -4,7 +4,7 @@
*
* @global string $wp_version
*/
$wp_version = '4.9-RC1-42118';
$wp_version = '4.9-RC1-42119';
/**
* Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.

2
wp-includes/wp-db.php
View File

@ -1946,7 +1946,7 @@ class wpdb {
// If ext/hash is not present, compat.php's hash_hmac() does not support sha256.
$algo = function_exists( 'hash' ) ? 'sha256' : 'sha1';
// Old WP installs may not have AUTH_SALT defined.
$salt = defined( 'AUTH_SALT' ) ? AUTH_SALT : rand();
$salt = defined( 'AUTH_SALT' ) ? AUTH_SALT : (string) rand();
$placeholder = '{' . hash_hmac( $algo, uniqid( $salt, true ), $salt ) . '}';
}