From 7232271a379396ca1d4b083af051262057003c41 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Michal=20=C4=8Ciha=C5=99?= <michal@cihar.com>
Date: Mon, 27 Mar 2017 15:55:35 +0200
Subject: [PATCH] Truncate only long passwords
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This avoids problems with certain PHP versions returning false when
first parameter to substr is ''.

Signed-off-by: Michal Čihař <michal@cihar.com>
---
 libraries/common.inc.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libraries/common.inc.php b/libraries/common.inc.php
index 4922999b91..1a3782eee8 100644
--- a/libraries/common.inc.php
+++ b/libraries/common.inc.php
@@ -639,7 +639,7 @@ if (! defined('PMA_MINIMUM_COMMON')) {
                 . ' ' . $cfg['Server']['auth_type']
             );
         }
-        if (isset($_REQUEST['pma_password'])) {
+        if (isset($_REQUEST['pma_password']) && strlen($_REQUEST['pma_password']) > 256) {
             $_REQUEST['pma_password'] = substr($_REQUEST['pma_password'], 0, 256);
         }
         $fqnAuthClass = 'PMA\libraries\plugins\auth\\' . $auth_class;