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new PMA_List_Database class (i knew there was something missing ...)

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Sebastian Mendel
2006-09-20 12:14:43 +00:00
parent 45b04ab15d
commit ce8e5b220a
1 changed files with 467 additions and 0 deletions
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libraries/PMA_List_Database.class.php Normal file
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<?php
/**
* holds the PMA_List_Database class
*
* possible at a later stage we could abstratc this a little bit more:
*
* PMA
* -> PMA_Config
* -> PMA_Theme
* -> ...
* -> PMA_List
* -> PMA_List_Table
* -> PMA_List_Server
* -> PMA_List_Database
* -> PMA_List_Database_Mysql
* -> PMA_List_Database_Mysql_3
* -> PMA_List_Database_Mysql_4
* -> PMA_List_Database_Mysql_5
* -> PMA_List_Database_OtherDbms
* -> ...
*
*/
//require_once 'PMA_List.class.php';
/**
* handles database lists
*
* @todo this object should be attached to the server object
* @todo make use of INFORMATION_SCHEMA !?
* @todo support --skip-showdatabases and user has only global rights?
* @todo add caching
* @access public
*/
/*public*/ class PMA_List_Database /* extends PMA_List */ {
/**
* @var array the list items
* @access public
* @todo move into PMA_List
*/
var $items = array();
/**
* @var mixed database link resource|object to be used
* @access protected
*/
var $_db_link = null;
/**
* @var mixed user database link resource|object
* @access protected
*/
var $_db_link_user = null;
/**
* @var mixed controluser database link resource|object
* @access protected
*/
var $_db_link_control = null;
/**
* @var bool whether we need to re-index the database list for consistency keys
* @access protected
*/
var $_need_to_reindex = false;
/**
* @var boolean whether SHOW DATABASES is disabled or not
* @access protected
*/
var $_show_databases_disabled = false;
/**
* Constructor
*
* @uses PMA_List_Database::$_db_link
* @uses PMA_List_Database::$_db_link_user
* @uses PMA_List_Database::$_db_link_control
* @uses PMA_List_Database::build()
* @param mixed $db_link_user user database link resource|object
* @param mixed $db_link_control control database link resource|object
*/
function __construct($db_link_user = null, $db_link_control = null) {
$this->_db_link = $db_link_user;
$this->_db_link_user = $db_link_user;
$this->_db_link_control = $db_link_control;
$this->build();
}
/**
* old PHP 4 style constructor
*
* @see PMA_List_Database::__construct()
*/
function PMA_List_Database($db_link_user = null, $db_link_control = null) {
$this->__construct($db_link_user, $db_link_control);
}
/**
* removes all databases not accessible by current user from list
*
* @access protected
* @uses PMA_List_Database::$items
* @uses PMA_List_Database::$_db_link_user
* @uses PMA_List_Database::$_need_to_reindex to set it if reuqired
* @uses PMA_DBI_select_db()
*/
function _checkAccess()
{
foreach ($this->items as $key => $db) {
if (! @PMA_DBI_select_db($db, $this->_db_link_user)) {
unset($this->items[$key]);
}
}
// re-index values
$this->_need_to_reindex = true;
}
/**
* checks if the configuration wants to hide some databases
*
* @access protected
* @uses PMA_List_Database::$items
* @uses PMA_List_Database::$_need_to_reindex to set it if reuqired
* @uses preg_match()
* @global $cfg
*/
function _checkHideDatabase()
{
if (empty($GLOBALS['cfg']['Server']['hide_db'])) {
return;
}
foreach ($this->items as $key => $db) {
if (preg_match('/' . $GLOBALS['cfg']['Server']['hide_db'] . '/', $db)) {
unset($this->items[$key]);
}
}
// re-index values
$this->_need_to_reindex = true;
}
/**
* retrieves database list from server
*
* @todo we could also search mysql tables if all fail?
* @access protected
* @uses PMA_List_Database::$_show_databases_disabled for not retrying if SHOW DATABASES is disabled
* @uses PMA_List_Database::$_db_link
* @uses PMA_List_Database::$_db_link_control in case of SHOW DATABASES is disabled for userlink
* @uses PMA_DBI_fetch_result()
* @uses PMA_DBI_getError()
* @global $error_showdatabases to alert not allowed SHOW DATABASE
* @global $errno from PMA_DBI_getError()
* @param string $like_db_name usally a db_name containing wildcards
*/
function _retrieve($like_db_name = '')
{
if ($this->_show_databases_disabled) {
return array();
}
if (! empty($like_db_name)) {
$like = " LIKE '" . $like_db_name . "';";
} else {
$like = ";";
}
$database_list = PMA_DBI_fetch_result('SHOW DATABASES' . $like, null, null, $this->_db_link);
PMA_DBI_getError();
if ($GLOBALS['errno'] !== 0) {
// failed to get database list, try the control user
// (hopefully there is one and he has SHOW DATABASES right)
$this->_db_link = $this->_db_link_control;
$database_list = PMA_DBI_fetch_result('SHOW DATABASES' . $like, null, null, $this->_db_link);
PMA_DBI_getError();
if ($GLOBALS['errno'] !== 0) {
// failed! we will display a warning that phpMyAdmin could not safely
// retrieve database list, the admin has to setup a control user or
// allow SHOW DATABASES
$GLOBALS['error_showdatabases'] = true;
$this->_show_databases_disabled = true;
}
}
return $database_list;
}
/**
* builds up the list
*
* @uses PMA_List_Database::$items to initialize it
* @uses PMA_List_Database::$_need_to_reindex
* @uses PMA_List_Database::_checkOnlyDatabase()
* @uses PMA_List_Database::_retrieve()
* @uses PMA_List_Database::_checkHideDatabase()
* @uses PMA_List_Database::_checkAccess()
* @uses PMA_MYSQL_INT_VERSION
* @uses array_values()
* @uses natsort()
* @global $cfg
*/
function build()
{
$this->items = array();
if (! $this->_checkOnlyDatabase()) {
$this->items = $this->_retrieve();
if ($GLOBALS['cfg']['NaturalOrder']) {
natsort($this->items);
$this->_need_to_reindex = true;
}
}
$this->_checkHideDatabase();
// Before MySQL 4.0.2, SHOW DATABASES could send the
// whole list, so check if we really have access:
if (PMA_MYSQL_INT_VERSION < 40002) {
$this->_checkAccess();
}
if ($this->_need_to_reindex) {
$this->items = array_values($this->items);
}
}
/**
* checks the only_db configuration
*
* @uses PMA_List_Database::$_show_databases_disabled
* @uses PMA_List_Database::$items
* @uses PMA_List_Database::_retrieve()
* @uses PMA_unescape_mysql_wildcards()
* @uses preg_match()
* @uses array_diff()
* @uses array_merge()
* @uses is_array()
* @uses strlen()
* @uses is_string()
* @global $cfg
* @return boolean false if there is no only_db, otherwise true
*/
function _checkOnlyDatabase()
{
if (is_string($GLOBALS['cfg']['Server']['only_db'])
&& strlen($GLOBALS['cfg']['Server']['only_db'])) {
$GLOBALS['cfg']['Server']['only_db'] = array(
$GLOBALS['cfg']['Server']['only_db']
);
}
if (! is_array($GLOBALS['cfg']['Server']['only_db'])) {
return false;
}
foreach ($GLOBALS['cfg']['Server']['only_db'] as $each_only_db) {
if ($each_only_db === '*' && ! $this->_show_databases_disabled) {
// append all not already listed dbs to the list
$this->items = array_merge($this->items,
array_diff($this->_retrieve(), $this->items));
// there can only be one '*', and this can only be last
break;
}
// check if the db name contains wildcard,
// thus containing not escaped _ or %
if (! preg_match('/(^|[^\\\\])(_|%)/', $each_only_db)) {
// ... not contains wildcard
$this->items[] = PMA_unescape_mysql_wildcards($each_only_db);
continue;
}
if (! $this->_show_databases_disabled) {
$this->items = array_merge($this->items, $this->_retrieve($each_only_db));
continue;
}
// @todo induce error, about not using wildcards with SHOW DATABASE disabled?
}
return true;
}
/**
* returns first item from list
*
* @todo move into PMA_List
* @uses PMA_List_Database::$items
* @uses reset()
* @return string value of first item
*/
function getFirst()
{
return reset($this->items);
}
/**
* returns item only if there is only one in the list
*
* @todo move into PMA_List
* @uses PMA_List_Database::count()
* @uses PMA_List_Database::getFirst()
* @uses PMA_List_Database::emptyItem()
* @return single item
*/
function getSingleItem()
{
if ($this->count() === 1) {
return $this->getFirst();
}
return $this->emptyItem();
}
/**
* returns list item count
*
* @todo move into PMA_List
* @uses PMA_List_Database::$items
* @uses count()
*/
function count()
{
return count($this->items);
}
/**
* defines what is an empty item (0, '', false or null)
*
* @todo add as abstract into PMA_List
*/
function emptyItem()
{
return '';
}
/**
* checks if the given db names exists in the current list, if there is
* missing at least one item it reutrns false other wise true
*
* @uses PMA_List_Database::$items
* @uses func_get_args()
* @uses in_array()
* @param string $db_name,.. one or more mysql result resources
* @return boolean true if all items exists, otheriwse false
*/
function exists()
{
foreach (func_get_args() as $result) {
if (! in_array($result, $this->items)) {
return false;
}
}
return true;
}
/**
* returns HTML <option>-tags to be used inside <select></select>
*
* @uses PMA_List_Database::$items
* @uses htmlspecialchars()
* @uses strlen()
* @global $db
* @param mixed $selected the selected db or true for selecting current db
* @return string HTML option tags
*/
function getHtmlOptions($selected = '')
{
if (true === $selected && strlen($GLOBALS['db'])) {
$selected = $GLOBALS['db'];
}
$options = '';
foreach ($this->items as $each_db) {
$options .= '<option value="' . htmlspecialchars($each_db) . '"';
if ($selected === $each_db) {
$options .= ' selected="selected"';
}
$options .= '>' . htmlspecialchars($each_db) . '</option>' . "\n";
}
return $options;
}
/**
* this is just a backup, if all is fine this can be deleted later
*
* @deprecated
* @access protected
*/
function _checkAgainstPrivTables()
{
// 1. get allowed dbs from the "mysql.db" table
// lem9: User can be blank (anonymous user)
$local_query = "
SELECT DISTINCT `Db` FROM `mysql`.`db`
WHERE `Select_priv` = 'Y'
AND `User`
IN ('" . PMA_sqlAddslashes($GLOBALS['cfg']['Server']['user']) . "', '')";
$uva_mydbs = PMA_DBI_fetch_result($local_query, null, null,
$GLOBALS['controllink']);
if ($uva_mydbs) {
// Will use as associative array of the following 2 code
// lines:
// the 1st is the only line intact from before
// correction,
// the 2nd replaces $dblist[] = $row['Db'];
// Code following those 2 lines in correction continues
// populating $dblist[], as previous code did. But it is
// now populated with actual database names instead of
// with regular expressions.
var_dump($uva_mydbs);
$uva_alldbs = PMA_DBI_query('SHOW DATABASES;', $GLOBALS['controllink']);
// loic1: all databases cases - part 2
if (isset($uva_mydbs['%'])) {
while ($uva_row = PMA_DBI_fetch_row($uva_alldbs)) {
$dblist[] = $uva_row[0];
} // end while
} else {
while ($uva_row = PMA_DBI_fetch_row($uva_alldbs)) {
$uva_db = $uva_row[0];
if (isset($uva_mydbs[$uva_db]) && $uva_mydbs[$uva_db] == 1) {
$dblist[] = $uva_db;
$uva_mydbs[$uva_db] = 0;
} elseif (!isset($dblist[$uva_db])) {
foreach ($uva_mydbs as $uva_matchpattern => $uva_value) {
// loic1: fixed bad regexp
// TODO: db names may contain characters
// that are regexp instructions
$re = '(^|(\\\\\\\\)+|[^\])';
$uva_regex = ereg_replace($re . '%', '\\1.*', ereg_replace($re . '_', '\\1.{1}', $uva_matchpattern));
// Fixed db name matching
// 2000-08-28 -- Benjamin Gandon
if (ereg('^' . $uva_regex . '$', $uva_db)) {
$dblist[] = $uva_db;
break;
}
} // end while
} // end if ... elseif ...
} // end while
} // end else
PMA_DBI_free_result($uva_alldbs);
unset($uva_mydbs);
} // end if
// 2. get allowed dbs from the "mysql.tables_priv" table
$local_query = 'SELECT DISTINCT Db FROM mysql.tables_priv WHERE Table_priv LIKE \'%Select%\' AND User = \'' . PMA_sqlAddslashes($GLOBALS['cfg']['Server']['user']) . '\'';
$rs = PMA_DBI_try_query($local_query, $GLOBALS['controllink']);
if ($rs && @PMA_DBI_num_rows($rs)) {
while ($row = PMA_DBI_fetch_assoc($rs)) {
if (!in_array($row['Db'], $dblist)) {
$dblist[] = $row['Db'];
}
} // end while
PMA_DBI_free_result($rs);
} // end if
}
}
?>