Friendica Communications Platform (please note that this is a clone of the repository at github, issues are handled there) https://friendi.ca
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<?php
require_once('include/datetime.php');
$objDDDBLResultHandler = new \DDDBL\DataObjectPool('Result-Handler');
/**
* create handler, which returns just the PDOStatement object
* this allows usage of the cursor to scroll through
* big result-sets
*
**/
$cloPDOStatementResultHandler = function(\DDDBL\Queue $objQueue) {
$objPDO = $objQueue->getState()->get('PDOStatement');
$objQueue->getState()->update(array('result' => $objPDO));
# delete handler which closes the PDOStatement-cursor
# this will be done manual if using this handler
$objQueue->deleteHandler(QUEUE_CLOSE_CURSOR_POSITION);
};
$objDDDBLResultHandler->add('PDOStatement', array('HANDLER' => $cloPDOStatementResultHandler));
/**
*
* MySQL database class
*
* For debugging, insert 'dbg(1);' anywhere in the program flow.
* dbg(0); will turn it off. Logging is performed at LOGGER_DATA level.
* When logging, all binary info is converted to text and html entities are escaped so that
* the debugging stream is safe to view within both terminals and web pages.
*
*/
if(! class_exists('dba')) {
class dba {
private $debug = 0;
private $db;
private $result;
public $connected = false;
public $error = false;
function __construct($server,$user,$pass,$db,$install = false) {
$a = get_app();
# work around, to store the database - configuration in DDDBL
$objDataObjectPool = new \DDDBL\DataObjectPool('Database-Definition');
$objDataObjectPool->add('DEFAULT', array('CONNECTION' => "mysql:host=$server;dbname=$db",
'USER' => $user,
'PASS' => $pass,
'DEFAULT' => true));
$stamp1 = microtime(true);
$server = trim($server);
$user = trim($user);
$pass = trim($pass);
$db = trim($db);
if (!(strlen($server) && strlen($user))){
$this->connected = false;
$this->db = null;
return;
}
if($install) {
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;
}
}
}
# etablish connection to database and store PDO object
\DDDBL\connect();
$this->db = \DDDBL\getDB();
if(\DDDBL\isConnected()) {
$this->connected = true;
}
if(! $this->connected) {
$this->db = null;
if(! $install)
system_unavailable();
}
$a->save_timestamp($stamp1, "network");
}
public function getdb() {
return $this->db;
}
public function q($sql, $onlyquery = false) {
$a = get_app();
$strHandler = (true === $onlyquery) ? 'PDOStatement' : 'MULTI';
$strQueryAlias = md5($sql);
$strSQLType = strtoupper(strstr($sql, ' ', true));
$objPreparedQueryPool = new \DDDBL\DataObjectPool('Query-Definition');
# check if query do not exists till now, if so create its definition
if(!$objPreparedQueryPool->exists($strQueryAlias))
$objPreparedQueryPool->add($strQueryAlias, array('QUERY' => $sql,
'HANDLER' => $strHandler));
if((! $this->db) || (! $this->connected))
return false;
$this->error = '';
$stamp1 = microtime(true);
try {
$r = \DDDBL\get($strQueryAlias);
# bad workaround to emulate the bizzare behavior of mysql_query
if(in_array($strSQLType, array('INSERT', 'UPDATE', 'DELETE', 'CREATE', 'DROP', 'SET')))
$result = true;
$intErrorCode = false;
} catch (\Exception $objException) {
$result = false;
$intErrorCode = $objPreparedQueryPool->get($strQueryAlias)->get('PDOStatement')->errorCode();
}
$stamp2 = microtime(true);
$duration = (float)($stamp2-$stamp1);
$a->save_timestamp($stamp1, "database");
if(x($a->config,'system') && x($a->config['system'],'db_log')) {
if (($duration > $a->config["system"]["db_loglimit"])) {
$duration = round($duration, 3);
$backtrace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
@file_put_contents($a->config["system"]["db_log"], datetime_convert()."\t".$duration."\t".
basename($backtrace[1]["file"])."\t".
$backtrace[1]["line"]."\t".$backtrace[2]["function"]."\t".
substr($sql, 0, 2000)."\n", FILE_APPEND);
}
}
if($intErrorCode)
$this->error = $intErrorCode;
if(strlen($this->error)) {
logger('dba: ' . $this->error);
}
if($this->debug) {
$mesg = '';
if($result === false)
$mesg = 'false';
elseif($result === true)
$mesg = 'true';
else {
# this needs fixing, but is a bug itself
#$mesg = mysql_num_rows($result) . ' results' . EOL;
}
$str = 'SQL = ' . printable($sql) . EOL . 'SQL returned ' . $mesg
. (($this->error) ? ' error: ' . $this->error : '')
. EOL;
logger('dba: ' . $str );
}
/**
* If dbfail.out exists, we will write any failed calls directly to it,
* regardless of any logging that may or may nor be in effect.
* These usually indicate SQL syntax errors that need to be resolved.
*/
if(isset($result) AND ($result === false)) {
logger('dba: ' . printable($sql) . ' returned false.' . "\n" . $this->error);
if(file_exists('dbfail.out'))
file_put_contents('dbfail.out', datetime_convert() . "\n" . printable($sql) . ' returned false' . "\n" . $this->error . "\n", FILE_APPEND);
}
if(isset($result) AND (($result === true) || ($result === false)))
return $result;
if ($onlyquery) {
$this->result = $r; # this will store an PDOStatement Object in result
$this->result->execute(); # execute the Statement, to get its result
return true;
}
//$a->save_timestamp($stamp1, "database");
if($this->debug)
logger('dba: ' . printable(print_r($r, true)));
return($r);
}
public function qfetch() {
if (false === $this->result)
return false;
return $this->result->fetch();
}
public function qclose() {
if ($this->result)
return $this->result->closeCursor();
}
public function dbg($dbg) {
$this->debug = $dbg;
}
public function escape($str) {
if($this->db && $this->connected) {
$strQuoted = $this->db->quote($str);
# this workaround is needed, because quote creates "'" and the beginning and the end
# of the string, which is correct. but until now the queries set this delimiter manually,
# so we must remove them from here and wait until everything uses prepared statements
return mb_substr($strQuoted, 1, mb_strlen($strQuoted) - 2);
}
}
function __destruct() {
if ($this->db)
\DDDBL\disconnect();
}
}}
if(! function_exists('printable')) {
function printable($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 $s;
}}
// Procedural functions
if(! function_exists('dbg')) {
function dbg($state) {
global $db;
if($db)
$db->dbg($state);
}}
if(! function_exists('dbesc')) {
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: $r = q("SELECT * FROM `%s` WHERE `uid` = %d",
// 'user', 1);
if(! function_exists('q')) {
function q($sql) {
global $db;
$args = func_get_args();
unset($args[0]);
if($db && $db->connected) {
$stmt = @vsprintf($sql,$args); // Disabled warnings
//logger("dba: q: $stmt", LOGGER_ALL);
if($stmt === false)
logger('dba: vsprintf error: ' . print_r(debug_backtrace(),true), LOGGER_DEBUG);
return $db->q($stmt);
}
/**
*
* This will happen occasionally trying to store the
* session data after abnormal program termination
*
*/
logger('dba: no database: ' . print_r($args,true));
return false;
}}
/**
*
* Raw db query, no arguments
*
*/
if(! function_exists('dbq')) {
function dbq($sql) {
global $db;
if($db && $db->connected)
$ret = $db->q($sql);
else
$ret = false;
return $ret;
}}
// Caller is responsible for ensuring that any integer arguments to
// dbesc_array are actually integers and not malformed strings containing
// SQL injection vectors. All integer array elements should be specifically
// cast to int to avoid trouble.
if(! function_exists('dbesc_array_cb')) {
function dbesc_array_cb(&$item, $key) {
if(is_string($item))
$item = dbesc($item);
}}
if(! function_exists('dbesc_array')) {
function dbesc_array(&$arr) {
if(is_array($arr) && count($arr)) {
array_walk($arr,'dbesc_array_cb');
}
}}
if(! function_exists('dba_timer')) {
function dba_timer() {
return microtime(true);
}}