Viewing file: check_user_privileges.lib.php (6.43 KB) -rw-rw-rw- Select action/file-type: (+) | (+) | (+) | Code (+) | Session (+) | (+) | SDB (+) | (+) | (+) | (+) | (+) | (+) |
<?php /* vim: set expandtab sw=4 ts=4 sts=4: */ /** * Get user's global privileges and some db-specific privileges * * @version $Id: check_user_privileges.lib.php 11982 2008-11-24 10:32:56Z nijel $ * @package phpMyAdmin */ if (! defined('PHPMYADMIN')) { exit; }
/** * */ $GLOBALS['is_superuser'] = PMA_isSuperuser();
/** * sets privilege information extracted from SHOW GRANTS result * * Detection for some CREATE privilege. * * Since MySQL 4.1.2, we can easily detect current user's grants using $userlink * (no control user needed) and we don't have to try any other method for * detection * * @todo fix to get really all privileges, not only explicitly defined for this user * from MySQL manual: (http://dev.mysql.com/doc/refman/5.0/en/show-grants.html) * SHOW GRANTS displays only the privileges granted explicitly to the named * account. Other privileges might be available to the account, but they are not * displayed. For example, if an anonymous account exists, the named account * might be able to use its privileges, but SHOW GRANTS will not display them. * * @uses $_SESSION['is_create_db_priv'] for caching * @uses $_SESSION['is_process_priv'] for caching * @uses $_SESSION['is_reload_priv'] for caching * @uses $_SESSION['db_to_create'] for caching * @uses $_SESSION['dbs_where_create_table_allowed'] for caching * @uses $GLOBALS['is_create_db_priv'] to set it * @uses $GLOBALS['is_process_priv'] to set it * @uses $GLOBALS['is_reload_priv'] to set it * @uses $GLOBALS['db_to_create'] to set it * @uses $GLOBALS['dbs_where_create_table_allowed'] to set it * @uses $GLOBALS['server'] * @uses PMA_DBI_try_query() * @uses PMA_DBI_fetch_row() * @uses PMA_DBI_free_result() * @uses PMA_DBI_getError() * @uses PMA_unQuote() * @uses PMA_backquote() * @uses preg_match() * @uses preg_replace() * @uses substr() * @uses strpos() */ function PMA_analyseShowGrant() { if (PMA_cacheExists('is_create_db_priv', true)) { $GLOBALS['is_create_db_priv'] = PMA_cacheGet('is_create_db_priv', true); $GLOBALS['is_process_priv'] = PMA_cacheGet('is_process_priv', true); $GLOBALS['is_reload_priv'] = PMA_cacheGet('is_reload_priv', true); $GLOBALS['db_to_create'] = PMA_cacheGet('db_to_create', true); $GLOBALS['dbs_where_create_table_allowed'] = PMA_cacheGet('dbs_where_create_table_allowed', true); return; }
// defaults $GLOBALS['is_create_db_priv'] = false; $GLOBALS['is_process_priv'] = true; $GLOBALS['is_reload_priv'] = false; $GLOBALS['db_to_create'] = ''; $GLOBALS['dbs_where_create_table_allowed'] = array();
$rs_usr = PMA_DBI_try_query('SHOW GRANTS');
if (! $rs_usr) { return; }
$re0 = '(^|(\\\\\\\\)+|[^\\\\])'; // non-escaped wildcards $re1 = '(^|[^\\\\])(\\\)+'; // escaped wildcards
while ($row = PMA_DBI_fetch_row($rs_usr)) { // extract db from GRANT ... ON *.* or GRANT ... ON db.* $db_name_offset = strpos($row[0], ' ON ') + 4; $show_grants_dbname = substr($row[0], $db_name_offset, strpos($row[0], '.', $db_name_offset) - $db_name_offset); $show_grants_dbname = PMA_unQuote($show_grants_dbname, '`');
$show_grants_str = substr($row[0], 6, (strpos($row[0], ' ON ') - 6)); if ($show_grants_str == 'RELOAD') { $GLOBALS['is_reload_priv'] = true; }
/** * @todo if we find CREATE VIEW but not CREATE, do not offer * the create database dialog box */ if ($show_grants_str == 'ALL' || $show_grants_str == 'ALL PRIVILEGES' || $show_grants_str == 'CREATE' || strpos($show_grants_str, 'CREATE,') !== false) { if ($show_grants_dbname == '*') { // a global CREATE privilege $GLOBALS['is_create_db_priv'] = true; $GLOBALS['is_reload_priv'] = true; $GLOBALS['db_to_create'] = ''; $GLOBALS['dbs_where_create_table_allowed'][] = '*'; // @todo we should not break here, cause GRANT ALL *.* // could be revoked by a later rule like GRANT SELECT ON db.* break; } else { // this array may contain wildcards $GLOBALS['dbs_where_create_table_allowed'][] = $show_grants_dbname;
$dbname_to_test = PMA_backquote($show_grants_dbname);
if ($GLOBALS['is_create_db_priv']) { // no need for any more tests if we already know this continue; }
if ((preg_match('/' . $re0 . '%|_/', $show_grants_dbname) && ! preg_match('/\\\\%|\\\\_/', $show_grants_dbname)) // does this db exist? || (! PMA_DBI_try_query('USE ' . preg_replace('/' . $re1 . '(%|_)/', '\\1\\3', $dbname_to_test)) && substr(PMA_DBI_getError(), 1, 4) != 1044) ) { if ($GLOBALS['cfg']['SuggestDBName']) { $GLOBALS['db_to_create'] = preg_replace('/' . $re0 . '_/', '\\1?', $show_grants_dbname); $GLOBALS['db_to_create'] = preg_replace('/' . $re0 . '%/', '\\1...', $GLOBALS['db_to_create']); $GLOBALS['db_to_create'] = preg_replace('/' . $re1 . '(%|_)/', '\\1\\3', $GLOBALS['db_to_create']); } $GLOBALS['is_create_db_priv'] = true;
/** * @todo collect $GLOBALS['db_to_create'] into an array, to display a * drop-down in the "Create new database" dialog */ // we don't break, we want all possible databases //break; } // end if } // end elseif } // end if } // end while
PMA_DBI_free_result($rs_usr);
// must also PMA_cacheUnset() them in libraries/auth/cookie.auth.lib.php PMA_cacheSet('is_create_db_priv', $GLOBALS['is_create_db_priv'], true); PMA_cacheSet('is_process_priv', $GLOBALS['is_process_priv'], true); PMA_cacheSet('is_reload_priv', $GLOBALS['is_reload_priv'], true); PMA_cacheSet('db_to_create', $GLOBALS['db_to_create'], true); PMA_cacheSet('dbs_where_create_table_allowed', $GLOBALS['dbs_where_create_table_allowed'], true); } // end function
PMA_analyseShowGrant();
?>
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