bug #1811519 [privileges] fixed used collation for accessing mysql.user in server privileges

ChangeLog

@@ -22,6 +22,7 @@ $HeadURL: https://phpmyadmin.svn.sourceforge.net/svnroot/phpmyadmin/trunk/phpMyA
 + [lang] Croatian update, thanks to Renato Pavicic
 - patch #1807615 [GUI] Display patch for column rights in Opera
 - bug #1811519 Can't delete user with a german umlaut.
+- bug #1811519 [privileges] fixed used collation for accessing mysql.user in server privileges
 - it should not be possible to move or copy a table to information_schema
 
 2.11.1.1 (not yet released)

server_privileges.php

@@ -749,10 +749,10 @@ if (!empty($adduser_submit) || !empty($change_copy)) {
     }
     $res = PMA_DBI_query(
         'SELECT \'foo\' FROM `mysql`.`user`'
-        .' WHERE ' . PMA_convert_using('User')
-        .' = ' . PMA_convert_using(PMA_sqlAddslashes($username), 'quoted')
-        .' AND ' . PMA_convert_using('Host')
-        .' = ' . PMA_convert_using($hostname, 'quoted') . ';',
+        .' WHERE CONVERT(`User` USING utf8) COLLATE utf8_bin '
+        .' = CONVERT(\'' . PMA_sqlAddslashes($username) . '\' USING utf8) COLLATE utf8_bin '
+        .' AND CONVERT(`Host` USING utf8) COLLATE utf8_bin '
+        .' = CONVERT(\'' . PMA_sqlAddslashes($hostname) . '\' USING utf8) COLLATE utf8_bin ;',
         null, PMA_DBI_QUERY_STORE);
     if (PMA_DBI_num_rows($res) == 1) {
         PMA_DBI_free_result($res);