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<?php
require_once 'include/dba/dba_driver.php';
/**
* @brief PDO based database driver.
*
*/
class dba_pdo extends dba_driver {
public $driver_dbtype = null;
/**
* {@inheritDoc}
* @see dba_driver::connect()
*/
function connect($server, $scheme, $port, $user, $pass, $db) {
$this->driver_dbtype = $scheme;
if(strpbrk($server,':;')) {
$dsn = $this->driver_dbtype . ':unix_socket=' . trim($server, ':;');
}
else {
$dsn = $this->driver_dbtype . ':host=' . $server . (intval($port) ? ';port=' . $port : '');
}
$dsn .= ';dbname=' . $db;
try {
$this->db = new PDO($dsn,$user,$pass);
$this->db->setAttribute(PDO::ATTR_ERRMODE,PDO::ERRMODE_EXCEPTION);
}
catch(PDOException $e) {
if(file_exists('dbfail.out')) {
file_put_contents('dbfail.out', datetime_convert() . "\nConnect: " . $e->getMessage() . "\n", FILE_APPEND);
}
return false;
}
if($this->driver_dbtype === 'pgsql')
$this->q("SET standard_conforming_strings = 'off'; SET backslash_quote = 'on';");
$this->connected = true;
return true;
}
/**
* {@inheritDoc}
* @see dba_driver::q()
*
* @return bool|array|PDOStatement
* - \b false if not connected or PDOException occured on query
* - \b array with results on a SELECT query
* - \b PDOStatement on a non SELECT SQL query
*/
function q($sql) {
if((! $this->db) || (! $this->connected))
return false;
if($this->driver_dbtype === 'pgsql') {
if(substr(rtrim($sql),-1,1) !== ';') {
$sql .= ';';
}
}
$result = null;
$this->error = '';
$select = ((stripos($sql, 'select') === 0) ? true : false);
try {
$result = $this->db->query($sql, PDO::FETCH_ASSOC);
}
catch(PDOException $e) {
$this->error = $e->getMessage();
if($this->error) {
db_logger('dba_pdo: ERROR: ' . printable($sql) . "\n" . $this->error, LOGGER_NORMAL, LOG_ERR);
if(file_exists('dbfail.out')) {
file_put_contents('dbfail.out', datetime_convert() . "\n" . printable($sql) . "\n" . $this->error . "\n", FILE_APPEND);
}
}
}
if(!($select)) {
if($this->debug) {
db_logger('dba_pdo: DEBUG: ' . printable($sql) . ' returns ' . (($result) ? 'true' : 'false'), LOGGER_NORMAL,(($result) ? LOG_INFO : LOG_ERR));
}
return $result;
}
$r = array();
if($result) {
foreach($result as $x) {
$r[] = $x;
}
}
if($this->debug) {
db_logger('dba_pdo: DEBUG: ' . printable($sql) . ' returned ' . count($r) . ' results.', LOGGER_NORMAL, LOG_INFO);
if(intval($this->debug) > 1) {
db_logger('dba_pdo: ' . printable(print_r($r,true)), LOGGER_NORMAL, LOG_INFO);
}
}
return (($this->error) ? false : $r);
}
function escape($str) {
if($this->db && $this->connected) {
return substr(substr(@$this->db->quote($str),1),0,-1);
}
}
function close() {
if($this->db)
$this->db = null;
$this->connected = false;
}
function concat($fld,$sep) {
if($this->driver_dbtype === 'pgsql') {
return 'string_agg(' . $fld . ',\'' . $sep . '\')';
}
else {
return 'GROUP_CONCAT(DISTINCT ' . $fld . ' SEPARATOR \'' . $sep . '\')';
}
}
function use_index($str) {
if($this->driver_dbtype === 'pgsql') {
return '';
}
else {
return 'USE INDEX( ' . $str . ')';
}
}
function quote_interval($txt) {
if($this->driver_dbtype === 'pgsql') {
return "'$txt'";
}
else {
return $txt;
}
}
// These two functions assume that postgres standard_conforming_strings is set to off;
// which we perform during DB open.
function escapebin($str) {
if($this->driver_dbtype === 'pgsql') {
return "\\\\x" . bin2hex($str);
}
else {
return $this->escape($str);
}
}
function unescapebin($str) {
if($this->driver_dbtype === 'pgsql') {
if(gettype($str) === 'resource') {
$str = stream_get_contents($str);
}
if(substr($str,0,2) === '\\x') {
$str = hex2bin(substr($str,2));
}
}
return $str;
}
function getdriver() {
return 'pdo';
}
}
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