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<?php /** @file */
function dba_factory($server,$user,$pass,$db,$install = false) {
$dba = null;
if(class_exists('mysqli')) {
require_once('include/dba/dba_mysqli.php');
$dba = new dba_mysqli($server,$user,$pass,$db,$install);
}
else {
require_once('include/dba/dba_mysql.php');
$dba = new dba_mysql($server,$user,$pass,$db,$install);
}
$dba->connect($server,$user,$pass,$db);
return $dba;
}
abstract class dba_driver {
protected $debug = 0;
protected $driver;
protected $db;
public $connected = false;
public $error = false;
abstract function connect($server,$user,$pass,$db);
abstract function q($sql);
abstract function escape($str);
abstract function close();
function __construct($server,$user,$pass,$db,$install = false) {
if($install)
$this->install($server,$user,$pass,$db);
$this->connect($server,$user,$pass,$db);
}
function install($server,$user,$pass,$db) {
$server = trim($server);
$user = trim($user);
$pass = trim($pass);
$db = trim($db);
if (!(strlen($server) && strlen($user))){
$this->connected = false;
$this->db = null;
return;
}
if(strlen($server) && ($server !== 'localhost') && ($server !== '127.0.0.1')) {
if(! dns_get_record($server, DNS_A + DNS_CNAME + DNS_PTR)) {
$this->error = sprintf( t('Cannot locate DNS info for database server \'%s\''), $server);
$this->connected = false;
$this->db = null;
return;
}
}
}
function dbg($dbg) {
$this->debug = $dbg;
}
function __destruct() {
if($this->db && $this->connected) {
$this->close();
}
}
}
function printable($s) {
$s = preg_replace("~([\x01-\x08\x0E-\x0F\x10-\x1F\x7F-\xFF])~",".", $s);
$s = str_replace("\x00",'.',$s);
if(x($_SERVER,'SERVER_NAME'))
$s = escape_tags($s);
return $s;
}
// Procedural functions
function dbg($state) {
global $db;
if($db)
$db->dbg($state);
}
function dbesc($str) {
global $db;
if($db && $db->connected)
return($db->escape($str));
else
return(str_replace("'","\\'",$str));
}
// Function: q($sql,$args);
// Description: execute SQL query with printf style args.
// Example: $r = q("SELECT * FROM `%s` WHERE `uid` = %d",
// 'user', 1);
function q($sql) {
global $db;
$args = func_get_args();
unset($args[0]);
if($db && $db->connected) {
$stmt = vsprintf($sql,$args);
if($stmt === false)
logger('dba: vsprintf error: ' . print_r(debug_backtrace(),true));
return $db->q($stmt);
}
/**
*
* This will happen occasionally trying to store the
* session data after abnormal program termination
*
*/
logger('dba: no database: ' . print_r($args,true));
return false;
}
/**
*
* Raw db query, no arguments
*
*/
function dbq($sql) {
global $db;
if($db && $db->connected)
$ret = $db->q($sql);
else
$ret = false;
return $ret;
}
// Caller is responsible for ensuring that any integer arguments to
// dbesc_array are actually integers and not malformed strings containing
// SQL injection vectors. All integer array elements should be specifically
// cast to int to avoid trouble.
function dbesc_array_cb(&$item, $key) {
if(is_string($item))
$item = dbesc($item);
}
function dbesc_array(&$arr) {
if(is_array($arr) && count($arr)) {
array_walk($arr,'dbesc_array_cb');
}
}
|
