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<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* Interface to the classic MySQL extension
*
* @package PhpMyAdmin-DBI
* @subpackage MySQL
*/
if (! defined('PHPMYADMIN')) {
exit;
}
require_once './libraries/logging.lib.php';
require_once './libraries/dbi/DBIExtension.int.php';
/**
* MySQL client API
*/
if (! defined('PMA_MYSQL_CLIENT_API')) {
$client_api = explode('.', mysql_get_client_info());
define(
'PMA_MYSQL_CLIENT_API',
(int)sprintf(
'%d%02d%02d',
$client_api[0], $client_api[1], intval($client_api[2])
)
);
unset($client_api);
}
/**
* Interface to the classic MySQL extension
*
* @package PhpMyAdmin-DBI
* @subpackage MySQL
*/
class PMA_DBI_Mysql implements PMA_DBI_Extension
{
/**
* Helper function for connecting to the database server
*
* @param string $server host/port/socket
* @param string $user mysql user name
* @param string $password mysql user password
* @param int $client_flags client flags of connection
* @param bool $persistent whether to use peristent connection
*
* @return mixed false on error or a mysql connection resource on success
*/
private function _realConnect($server, $user, $password, $client_flags,
$persistent = false
) {
global $cfg;
if (empty($client_flags)) {
if ($cfg['PersistentConnections'] || $persistent) {
$link = @mysql_pconnect($server, $user, $password);
} else {
$link = @mysql_connect($server, $user, $password);
}
} else {
if ($cfg['PersistentConnections'] || $persistent) {
$link = @mysql_pconnect($server, $user, $password, $client_flags);
} else {
$link = @mysql_connect(
$server, $user, $password, false, $client_flags
);
}
}
return $link;
}
/**
* Run the multi query and output the results
*
* @param mysqli $link mysqli object
* @param string $query multi query statement to execute
*
* @return boolean false always false since mysql extention not support
* for multi query executions
*/
public function realMultiQuery($link, $query)
{
// N.B.: PHP's 'mysql' extension does not support
// multi_queries so this function will always
// return false. Use the 'mysqli' extension, if
// you need support for multi_queries.
return false;
}
/**
* connects to the database server
*
* @param string $user mysql user name
* @param string $password mysql user password
* @param bool $is_controluser whether this is a control user connection
* @param array $server host/port/socket/persistent
* @param bool $auxiliary_connection (when true, don't go back to login if
* connection fails)
*
* @return mixed false on error or a mysqli object on success
*/
public function connect(
$user, $password, $is_controluser = false, $server = null,
$auxiliary_connection = false
) {
global $cfg;
if ($server) {
$server_port = (empty($server['port']))
? ''
: ':' . (int)$server['port'];
$server_socket = (empty($server['socket']))
? ''
: ':' . $server['socket'];
} else {
$server_port = (empty($cfg['Server']['port']))
? ''
: ':' . (int)$cfg['Server']['port'];
$server_socket = (empty($cfg['Server']['socket']))
? ''
: ':' . $cfg['Server']['socket'];
}
$client_flags = 0;
// always use CLIENT_LOCAL_FILES as defined in mysql_com.h
// for the case where the client library was not compiled
// with --enable-local-infile
$client_flags |= 128;
/* Optionally compress connection */
if (defined('MYSQL_CLIENT_COMPRESS') && $cfg['Server']['compress']) {
$client_flags |= MYSQL_CLIENT_COMPRESS;
}
/* Optionally enable SSL */
if (defined('MYSQL_CLIENT_SSL') && $cfg['Server']['ssl']) {
$client_flags |= MYSQL_CLIENT_SSL;
}
if (! $server) {
$link = $this->_realConnect(
$cfg['Server']['host'] . $server_port . $server_socket,
$user, $password, empty($client_flags) ? null : $client_flags
);
// Retry with empty password if we're allowed to
if (empty($link) && $cfg['Server']['nopassword'] && ! $is_controluser) {
$link = $this->_realConnect(
$cfg['Server']['host'] . $server_port . $server_socket,
$user, '', empty($client_flags) ? null : $client_flags
);
}
} else {
if (!isset($server['host'])) {
$link = $this->_realConnect($server_socket, $user, $password, null);
} else {
$link = $this->_realConnect(
$server['host'] . $server_port . $server_socket,
$user, $password, null
);
}
}
if (empty($link)) {
if ($is_controluser) {
trigger_error(
__(
'Connection for controluser as defined'
. ' in your configuration failed.'
),
E_USER_WARNING
);
return false;
}
// we could be calling $GLOBALS['dbi']->connect() to connect to another
// server, for example in the Synchronize feature, so do not
// go back to main login if it fails
if (! $auxiliary_connection) {
PMA_logUser($user, 'mysql-denied');
global $auth_plugin;
$auth_plugin->authFails();
} else {
return false;
}
} // end if
if (! $server) {
$GLOBALS['dbi']->postConnect($link, $is_controluser);
}
return $link;
}
/**
* selects given database
*
* @param string $dbname name of db to select
* @param resource $link mysql link resource
*
* @return bool
*/
public function selectDb($dbname, $link = null)
{
if (empty($link)) {
if (isset($GLOBALS['userlink'])) {
$link = $GLOBALS['userlink'];
} else {
return false;
}
}
return mysql_select_db($dbname, $link);
}
/**
* runs a query and returns the result
*
* @param string $query query to run
* @param resource $link mysql link resource
* @param int $options query options
*
* @return mixed
*/
public function realQuery($query, $link, $options)
{
if ($options == ($options | PMA_DatabaseInterface::QUERY_STORE)) {
return mysql_query($query, $link);
} elseif ($options == ($options | PMA_DatabaseInterface::QUERY_UNBUFFERED)) {
return mysql_unbuffered_query($query, $link);
} else {
return mysql_query($query, $link);
}
}
/**
* returns array of rows with associative and numeric keys from $result
*
* @param resource $result result MySQL result
*
* @return array
*/
public function fetchArray($result)
{
return mysql_fetch_array($result, MYSQL_BOTH);
}
/**
* returns array of rows with associative keys from $result
*
* @param resource $result MySQL result
*
* @return array
*/
public function fetchAssoc($result)
{
return mysql_fetch_array($result, MYSQL_ASSOC);
}
/**
* returns array of rows with numeric keys from $result
*
* @param resource $result MySQL result
*
* @return array
*/
public function fetchRow($result)
{
return mysql_fetch_array($result, MYSQL_NUM);
}
/**
* Adjusts the result pointer to an arbitrary row in the result
*
* @param resource $result database result
* @param integer $offset offset to seek
*
* @return bool true on success, false on failure
*/
public function dataSeek($result, $offset)
{
return mysql_data_seek($result, $offset);
}
/**
* Frees memory associated with the result
*
* @param resource $result database result
*
* @return void
*/
public function freeResult($result)
{
if (is_resource($result) && get_resource_type($result) === 'mysql result') {
mysql_free_result($result);
}
}
/**
* Check if there are any more query results from a multi query
*
* @param object $link the connection object
*
* @return bool false
*/
public function moreResults($link = null)
{
// N.B.: PHP's 'mysql' extension does not support
// multi_queries so this function will always
// return false. Use the 'mysqli' extension, if
// you need support for multi_queries.
return false;
}
/**
* Prepare next result from multi_query
*
* @param object $link the connection object
*
* @return boolean false
*/
public function nextResult($link = null)
{
// N.B.: PHP's 'mysql' extension does not support
// multi_queries so this function will always
// return false. Use the 'mysqli' extension, if
// you need support for multi_queries.
return false;
}
/**
* Returns a string representing the type of connection used
*
* @param resource $link mysql link
*
* @return string type of connection used
*/
public function getHostInfo($link = null)
{
if (null === $link) {
if (isset($GLOBALS['userlink'])) {
$link = $GLOBALS['userlink'];
} else {
return false;
}
}
return mysql_get_host_info($link);
}
/**
* Returns the version of the MySQL protocol used
*
* @param resource $link mysql link
*
* @return int version of the MySQL protocol used
*/
public function getProtoInfo($link = null)
{
if (null === $link) {
if (isset($GLOBALS['userlink'])) {
$link = $GLOBALS['userlink'];
} else {
return false;
}
}
return mysql_get_proto_info($link);
}
/**
* returns a string that represents the client library version
*
* @return string MySQL client library version
*/
public function getClientInfo()
{
return mysql_get_client_info();
}
/**
* returns last error message or false if no errors occurred
*
* @param resource $link mysql link
*
* @return string|bool $error or false
*/
public function getError($link = null)
{
$GLOBALS['errno'] = 0;
/* Treat false same as null because of controllink */
if ($link === false) {
$link = null;
}
if (null === $link && isset($GLOBALS['userlink'])) {
$link =& $GLOBALS['userlink'];
// Do not stop now. On the initial connection, we don't have a $link,
// we don't have a $GLOBALS['userlink'], but we can catch the error code
// } else {
// return false;
}
if (null !== $link && false !== $link) {
$error_number = mysql_errno($link);
$error_message = mysql_error($link);
} else {
$error_number = mysql_errno();
$error_message = mysql_error();
}
if (0 == $error_number) {
return false;
}
// keep the error number for further check after
// the call to getError()
$GLOBALS['errno'] = $error_number;
return $GLOBALS['dbi']->formatError($error_number, $error_message);
}
/**
* returns the number of rows returned by last query
*
* @param resource $result MySQL result
*
* @return string|int
*/
public function numRows($result)
{
if (is_bool($result)) {
return 0;
}
return mysql_num_rows($result);
}
/**
* returns last inserted auto_increment id for given $link
* or $GLOBALS['userlink']
*
* @param resource $link the mysql object
*
* @return string|int
*/
public function insertId($link = null)
{
if (empty($link)) {
if (isset($GLOBALS['userlink'])) {
$link = $GLOBALS['userlink'];
} else {
return false;
}
}
// If the primary key is BIGINT we get an incorrect result
// (sometimes negative, sometimes positive)
// and in the present function we don't know if the PK is BIGINT
// so better play safe and use LAST_INSERT_ID()
//
return $GLOBALS['dbi']->fetchValue('SELECT LAST_INSERT_ID();', 0, 0, $link);
}
/**
* returns the number of rows affected by last query
*
* @param resource $link the mysql object
* @param bool $get_from_cache whether to retrieve from cache
*
* @return string|int
*/
public function affectedRows($link = null, $get_from_cache = true)
{
if (empty($link)) {
if (isset($GLOBALS['userlink'])) {
$link = $GLOBALS['userlink'];
} else {
return false;
}
}
if ($get_from_cache) {
return $GLOBALS['cached_affected_rows'];
} else {
return mysql_affected_rows($link);
}
}
/**
* returns metainfo for fields in $result
*
* @param resource $result MySQL result
*
* @return array meta info for fields in $result
*
* @todo add missing keys like in mysqli_query (decimals)
*/
public function getFieldsMeta($result)
{
$fields = array();
$num_fields = mysql_num_fields($result);
for ($i = 0; $i < $num_fields; $i++) {
$field = mysql_fetch_field($result, $i);
$field->flags = mysql_field_flags($result, $i);
$field->orgtable = mysql_field_table($result, $i);
$field->orgname = mysql_field_name($result, $i);
$fields[] = $field;
}
return $fields;
}
/**
* return number of fields in given $result
*
* @param resource $result MySQL result
*
* @return int field count
*/
public function numFields($result)
{
return mysql_num_fields($result);
}
/**
* returns the length of the given field $i in $result
*
* @param resource $result MySQL result
* @param int $i field
*
* @return int length of field
*/
public function fieldLen($result, $i)
{
return mysql_field_len($result, $i);
}
/**
* returns name of $i. field in $result
*
* @param resource $result MySQL result
* @param int $i field
*
* @return string name of $i. field in $result
*/
public function fieldName($result, $i)
{
return mysql_field_name($result, $i);
}
/**
* returns concatenated string of human readable field flags
*
* @param resource $result MySQL result
* @param int $i field
*
* @return string field flags
*/
public function fieldFlags($result, $i)
{
return mysql_field_flags($result, $i);
}
/**
* Store the result returned from multi query
*
* @return false
*/
public function storeResult()
{
return false;
}
}
?>
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