new PMA_List_Database class (i knew there was something missing ...)
This commit is contained in:
Sebastian Mendel
467
libraries/PMA_List_Database.class.php
Normal file
467
libraries/PMA_List_Database.class.php
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@@ -0,0 +1,467 @@
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<?php
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/**
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* holds the PMA_List_Database class
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*
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* possible at a later stage we could abstratc this a little bit more:
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*
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* PMA
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* -> PMA_Config
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* -> PMA_Theme
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* -> ...
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* -> PMA_List
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* -> PMA_List_Table
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* -> PMA_List_Server
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* -> PMA_List_Database
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* -> PMA_List_Database_Mysql
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* -> PMA_List_Database_Mysql_3
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* -> PMA_List_Database_Mysql_4
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* -> PMA_List_Database_Mysql_5
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* -> PMA_List_Database_OtherDbms
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* -> ...
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*
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*/
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//require_once 'PMA_List.class.php';
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/**
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* handles database lists
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*
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* @todo this object should be attached to the server object
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* @todo make use of INFORMATION_SCHEMA !?
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* @todo support --skip-showdatabases and user has only global rights?
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* @todo add caching
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* @access public
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*/
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/*public*/ class PMA_List_Database /* extends PMA_List */ {
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/**
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* @var array the list items
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* @access public
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* @todo move into PMA_List
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*/
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var $items = array();
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/**
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* @var mixed database link resource|object to be used
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* @access protected
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*/
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var $_db_link = null;
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/**
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* @var mixed user database link resource|object
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* @access protected
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*/
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var $_db_link_user = null;
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/**
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* @var mixed controluser database link resource|object
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* @access protected
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*/
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var $_db_link_control = null;
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/**
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* @var bool whether we need to re-index the database list for consistency keys
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* @access protected
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*/
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var $_need_to_reindex = false;
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/**
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* @var boolean whether SHOW DATABASES is disabled or not
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* @access protected
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*/
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var $_show_databases_disabled = false;
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/**
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* Constructor
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*
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* @uses PMA_List_Database::$_db_link
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* @uses PMA_List_Database::$_db_link_user
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* @uses PMA_List_Database::$_db_link_control
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* @uses PMA_List_Database::build()
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* @param mixed $db_link_user user database link resource|object
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* @param mixed $db_link_control control database link resource|object
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*/
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function __construct($db_link_user = null, $db_link_control = null) {
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$this->_db_link = $db_link_user;
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$this->_db_link_user = $db_link_user;
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$this->_db_link_control = $db_link_control;
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$this->build();
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}
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/**
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* old PHP 4 style constructor
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*
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* @see PMA_List_Database::__construct()
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*/
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function PMA_List_Database($db_link_user = null, $db_link_control = null) {
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$this->__construct($db_link_user, $db_link_control);
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}
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/**
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* removes all databases not accessible by current user from list
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*
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* @access protected
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* @uses PMA_List_Database::$items
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* @uses PMA_List_Database::$_db_link_user
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* @uses PMA_List_Database::$_need_to_reindex to set it if reuqired
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* @uses PMA_DBI_select_db()
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*/
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function _checkAccess()
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{
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foreach ($this->items as $key => $db) {
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if (! @PMA_DBI_select_db($db, $this->_db_link_user)) {
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unset($this->items[$key]);
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}
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}
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// re-index values
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$this->_need_to_reindex = true;
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}
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/**
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* checks if the configuration wants to hide some databases
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*
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* @access protected
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* @uses PMA_List_Database::$items
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* @uses PMA_List_Database::$_need_to_reindex to set it if reuqired
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* @uses preg_match()
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* @global $cfg
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*/
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function _checkHideDatabase()
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{
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if (empty($GLOBALS['cfg']['Server']['hide_db'])) {
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return;
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}
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foreach ($this->items as $key => $db) {
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if (preg_match('/' . $GLOBALS['cfg']['Server']['hide_db'] . '/', $db)) {
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unset($this->items[$key]);
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}
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}
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// re-index values
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$this->_need_to_reindex = true;
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}
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/**
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* retrieves database list from server
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*
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* @todo we could also search mysql tables if all fail?
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* @access protected
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* @uses PMA_List_Database::$_show_databases_disabled for not retrying if SHOW DATABASES is disabled
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* @uses PMA_List_Database::$_db_link
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* @uses PMA_List_Database::$_db_link_control in case of SHOW DATABASES is disabled for userlink
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* @uses PMA_DBI_fetch_result()
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* @uses PMA_DBI_getError()
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* @global $error_showdatabases to alert not allowed SHOW DATABASE
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* @global $errno from PMA_DBI_getError()
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* @param string $like_db_name usally a db_name containing wildcards
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*/
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function _retrieve($like_db_name = '')
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{
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if ($this->_show_databases_disabled) {
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return array();
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}
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if (! empty($like_db_name)) {
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$like = " LIKE '" . $like_db_name . "';";
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} else {
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$like = ";";
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}
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$database_list = PMA_DBI_fetch_result('SHOW DATABASES' . $like, null, null, $this->_db_link);
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PMA_DBI_getError();
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if ($GLOBALS['errno'] !== 0) {
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// failed to get database list, try the control user
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// (hopefully there is one and he has SHOW DATABASES right)
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$this->_db_link = $this->_db_link_control;
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$database_list = PMA_DBI_fetch_result('SHOW DATABASES' . $like, null, null, $this->_db_link);
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PMA_DBI_getError();
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if ($GLOBALS['errno'] !== 0) {
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// failed! we will display a warning that phpMyAdmin could not safely
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// retrieve database list, the admin has to setup a control user or
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// allow SHOW DATABASES
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$GLOBALS['error_showdatabases'] = true;
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$this->_show_databases_disabled = true;
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}
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}
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return $database_list;
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}
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/**
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* builds up the list
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*
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* @uses PMA_List_Database::$items to initialize it
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* @uses PMA_List_Database::$_need_to_reindex
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* @uses PMA_List_Database::_checkOnlyDatabase()
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* @uses PMA_List_Database::_retrieve()
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* @uses PMA_List_Database::_checkHideDatabase()
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* @uses PMA_List_Database::_checkAccess()
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* @uses PMA_MYSQL_INT_VERSION
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* @uses array_values()
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* @uses natsort()
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* @global $cfg
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*/
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function build()
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{
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$this->items = array();
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if (! $this->_checkOnlyDatabase()) {
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$this->items = $this->_retrieve();
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if ($GLOBALS['cfg']['NaturalOrder']) {
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natsort($this->items);
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$this->_need_to_reindex = true;
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}
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}
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$this->_checkHideDatabase();
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// Before MySQL 4.0.2, SHOW DATABASES could send the
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// whole list, so check if we really have access:
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if (PMA_MYSQL_INT_VERSION < 40002) {
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$this->_checkAccess();
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}
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if ($this->_need_to_reindex) {
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$this->items = array_values($this->items);
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}
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}
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/**
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* checks the only_db configuration
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*
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* @uses PMA_List_Database::$_show_databases_disabled
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* @uses PMA_List_Database::$items
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* @uses PMA_List_Database::_retrieve()
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* @uses PMA_unescape_mysql_wildcards()
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* @uses preg_match()
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* @uses array_diff()
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* @uses array_merge()
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* @uses is_array()
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* @uses strlen()
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* @uses is_string()
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* @global $cfg
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* @return boolean false if there is no only_db, otherwise true
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*/
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function _checkOnlyDatabase()
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{
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if (is_string($GLOBALS['cfg']['Server']['only_db'])
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&& strlen($GLOBALS['cfg']['Server']['only_db'])) {
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$GLOBALS['cfg']['Server']['only_db'] = array(
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$GLOBALS['cfg']['Server']['only_db']
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);
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}
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if (! is_array($GLOBALS['cfg']['Server']['only_db'])) {
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return false;
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}
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foreach ($GLOBALS['cfg']['Server']['only_db'] as $each_only_db) {
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if ($each_only_db === '*' && ! $this->_show_databases_disabled) {
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// append all not already listed dbs to the list
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$this->items = array_merge($this->items,
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array_diff($this->_retrieve(), $this->items));
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// there can only be one '*', and this can only be last
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break;
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}
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// check if the db name contains wildcard,
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// thus containing not escaped _ or %
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if (! preg_match('/(^|[^\\\\])(_|%)/', $each_only_db)) {
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// ... not contains wildcard
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$this->items[] = PMA_unescape_mysql_wildcards($each_only_db);
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continue;
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}
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if (! $this->_show_databases_disabled) {
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$this->items = array_merge($this->items, $this->_retrieve($each_only_db));
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continue;
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}
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// @todo induce error, about not using wildcards with SHOW DATABASE disabled?
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}
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return true;
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}
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/**
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* returns first item from list
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*
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* @todo move into PMA_List
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* @uses PMA_List_Database::$items
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* @uses reset()
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* @return string value of first item
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*/
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function getFirst()
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{
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return reset($this->items);
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}
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/**
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* returns item only if there is only one in the list
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*
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* @todo move into PMA_List
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* @uses PMA_List_Database::count()
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* @uses PMA_List_Database::getFirst()
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* @uses PMA_List_Database::emptyItem()
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* @return single item
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*/
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function getSingleItem()
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{
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if ($this->count() === 1) {
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return $this->getFirst();
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}
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return $this->emptyItem();
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}
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/**
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* returns list item count
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*
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* @todo move into PMA_List
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* @uses PMA_List_Database::$items
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* @uses count()
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*/
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function count()
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{
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return count($this->items);
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}
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/**
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* defines what is an empty item (0, '', false or null)
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*
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* @todo add as abstract into PMA_List
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*/
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function emptyItem()
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{
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return '';
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}
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/**
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* checks if the given db names exists in the current list, if there is
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* missing at least one item it reutrns false other wise true
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*
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* @uses PMA_List_Database::$items
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* @uses func_get_args()
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* @uses in_array()
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* @param string $db_name,.. one or more mysql result resources
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* @return boolean true if all items exists, otheriwse false
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*/
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function exists()
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{
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foreach (func_get_args() as $result) {
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if (! in_array($result, $this->items)) {
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return false;
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}
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}
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return true;
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}
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/**
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* returns HTML <option>-tags to be used inside <select></select>
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*
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* @uses PMA_List_Database::$items
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* @uses htmlspecialchars()
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* @uses strlen()
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* @global $db
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* @param mixed $selected the selected db or true for selecting current db
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* @return string HTML option tags
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*/
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function getHtmlOptions($selected = '')
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{
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if (true === $selected && strlen($GLOBALS['db'])) {
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$selected = $GLOBALS['db'];
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}
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$options = '';
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foreach ($this->items as $each_db) {
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$options .= '<option value="' . htmlspecialchars($each_db) . '"';
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if ($selected === $each_db) {
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$options .= ' selected="selected"';
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}
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$options .= '>' . htmlspecialchars($each_db) . '</option>' . "\n";
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}
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return $options;
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}
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/**
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* this is just a backup, if all is fine this can be deleted later
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*
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* @deprecated
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* @access protected
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*/
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function _checkAgainstPrivTables()
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{
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// 1. get allowed dbs from the "mysql.db" table
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// lem9: User can be blank (anonymous user)
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$local_query = "
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SELECT DISTINCT `Db` FROM `mysql`.`db`
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WHERE `Select_priv` = 'Y'
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AND `User`
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IN ('" . PMA_sqlAddslashes($GLOBALS['cfg']['Server']['user']) . "', '')";
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$uva_mydbs = PMA_DBI_fetch_result($local_query, null, null,
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$GLOBALS['controllink']);
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if ($uva_mydbs) {
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// Will use as associative array of the following 2 code
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// lines:
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// the 1st is the only line intact from before
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// correction,
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// the 2nd replaces $dblist[] = $row['Db'];
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// Code following those 2 lines in correction continues
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// populating $dblist[], as previous code did. But it is
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// now populated with actual database names instead of
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// with regular expressions.
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var_dump($uva_mydbs);
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$uva_alldbs = PMA_DBI_query('SHOW DATABASES;', $GLOBALS['controllink']);
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// loic1: all databases cases - part 2
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if (isset($uva_mydbs['%'])) {
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while ($uva_row = PMA_DBI_fetch_row($uva_alldbs)) {
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$dblist[] = $uva_row[0];
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} // end while
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} else {
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while ($uva_row = PMA_DBI_fetch_row($uva_alldbs)) {
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$uva_db = $uva_row[0];
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if (isset($uva_mydbs[$uva_db]) && $uva_mydbs[$uva_db] == 1) {
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$dblist[] = $uva_db;
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$uva_mydbs[$uva_db] = 0;
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} elseif (!isset($dblist[$uva_db])) {
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foreach ($uva_mydbs as $uva_matchpattern => $uva_value) {
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// loic1: fixed bad regexp
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// TODO: db names may contain characters
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// that are regexp instructions
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$re = '(^|(\\\\\\\\)+|[^\])';
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$uva_regex = ereg_replace($re . '%', '\\1.*', ereg_replace($re . '_', '\\1.{1}', $uva_matchpattern));
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// Fixed db name matching
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// 2000-08-28 -- Benjamin Gandon
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if (ereg('^' . $uva_regex . '$', $uva_db)) {
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$dblist[] = $uva_db;
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break;
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}
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} // end while
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} // end if ... elseif ...
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} // end while
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} // end else
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PMA_DBI_free_result($uva_alldbs);
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unset($uva_mydbs);
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} // end if
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// 2. get allowed dbs from the "mysql.tables_priv" table
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$local_query = 'SELECT DISTINCT Db FROM mysql.tables_priv WHERE Table_priv LIKE \'%Select%\' AND User = \'' . PMA_sqlAddslashes($GLOBALS['cfg']['Server']['user']) . '\'';
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$rs = PMA_DBI_try_query($local_query, $GLOBALS['controllink']);
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if ($rs && @PMA_DBI_num_rows($rs)) {
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while ($row = PMA_DBI_fetch_assoc($rs)) {
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if (!in_array($row['Db'], $dblist)) {
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$dblist[] = $row['Db'];
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}
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} // end while
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PMA_DBI_free_result($rs);
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} // end if
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}
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}
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?>
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