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; } } } if(class_exists('mysqli')) { $this->db = @new mysqli($server,$user,$pass,$db); if(! mysqli_connect_errno()) { $this->connected = true; } if (isset($a->config["system"]["db_charset"])) $this->db->set_charset($a->config["system"]["db_charset"]); } else { $this->mysqli = false; $this->db = mysql_connect($server,$user,$pass); if($this->db && mysql_select_db($db,$this->db)) { $this->connected = true; } if (isset($a->config["system"]["db_charset"])) mysql_set_charset($a->config["system"]["db_charset"], $this->db); } if(! $this->connected) { $this->db = null; if(! $install) system_unavailable(); } $a->save_timestamp($stamp1, "network"); } public function getdb() { return $this->db; } /** * @brief Returns the MySQL server version string * * This function discriminate between the deprecated mysql API and the current * object-oriented mysqli API. Example of returned string: 5.5.46-0+deb8u1 * * @return string */ public function server_info() { if ($this->mysqli) { $return = $this->db->server_info; } else { $return = mysql_get_server_info($this->db); } return $return; } public function q($sql, $onlyquery = false) { global $a; if((! $this->db) || (! $this->connected)) return false; $this->error = ''; // Check the connection (This can reconnect the connection - if configured) if ($this->mysqli) $connected = $this->db->ping(); else $connected = mysql_ping($this->db); $connstr = ($connected ? "Connected": "Disonnected"); $stamp1 = microtime(true); if($this->mysqli) $result = @$this->db->query($sql); else $result = @mysql_query($sql,$this->db); $stamp2 = microtime(true); $duration = (float)($stamp2-$stamp1); $a->save_timestamp($stamp1, "database"); if (strtolower(substr($sql, 0, 6)) != "select") $a->save_timestamp($stamp1, "database_write"); 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($sql, 0, 2000)."\n", FILE_APPEND); } } if($this->mysqli) { if($this->db->errno) { $this->error = $this->db->error; $this->errorno = $this->db->errno; } } elseif(mysql_errno($this->db)) { $this->error = mysql_error($this->db); $this->errorno = mysql_errno($this->db); } if(strlen($this->error)) { logger('DB Error ('.$connstr.') '.$this->errorno.': '.$this->error); } if($this->debug) { $mesg = ''; if($result === false) $mesg = 'false'; elseif($result === true) $mesg = 'true'; else { if($this->mysqli) $mesg = $result->num_rows . ' results' . EOL; else $mesg = mysql_num_rows($result) . ' results' . EOL; } $str = 'SQL = ' . printable($sql) . EOL . 'SQL returned ' . $mesg . (($this->error) ? ' error: ' . $this->error : '') . EOL; logger('dba: ' . $str ); } /** * If dbfail.out exists, we will write any failed calls directly to it, * regardless of any logging that may or may nor be in effect. * These usually indicate SQL syntax errors that need to be resolved. */ if($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" . $this->error . "\n", FILE_APPEND); } if(($result === true) || ($result === false)) return $result; if ($onlyquery) { $this->result = $result; return true; } $r = array(); if($this->mysqli) { if($result->num_rows) { while($x = $result->fetch_array(MYSQLI_ASSOC)) $r[] = $x; $result->free_result(); } } else { if(mysql_num_rows($result)) { while($x = mysql_fetch_array($result, MYSQL_ASSOC)) $r[] = $x; mysql_free_result($result); } } //$a->save_timestamp($stamp1, "database"); if($this->debug) logger('dba: ' . printable(print_r($r, true))); return($r); } public function qfetch() { $x = false; if ($this->result) if($this->mysqli) { if($this->result->num_rows) $x = $this->result->fetch_array(MYSQLI_ASSOC); } else { if(mysql_num_rows($this->result)) $x = mysql_fetch_array($this->result, MYSQL_ASSOC); } return($x); } public function qclose() { if ($this->result) if($this->mysqli) { $this->result->free_result(); } else { mysql_free_result($this->result); } } public function dbg($dbg) { $this->debug = $dbg; } public function escape($str) { if($this->db && $this->connected) { if($this->mysqli) return @$this->db->real_escape_string($str); else return @mysql_real_escape_string($str,$this->db); } } function connected() { if ($this->mysqli) $connected = $this->db->ping(); else $connected = mysql_ping($this->db); return $connected; } function __destruct() { if ($this->db) if($this->mysqli) $this->db->close(); else mysql_close($this->db); } }} 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; }} /** * @brief Performs a query with "dirty reads" * * By doing dirty reads (reading uncommitted data) no locks are performed * This function can be used to fetch data that doesn't need to be reliable. * * @param $args Query parameters (1 to N parameters of different types) * @return array Query array */ function qu($sql) { global $db; $args = func_get_args(); unset($args[0]); if($db && $db->connected) { $stmt = @vsprintf($sql,$args); // Disabled warnings if($stmt === false) logger('dba: vsprintf error: ' . print_r(debug_backtrace(),true), LOGGER_DEBUG); $db->q("SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;"); $retval = $db->q($stmt); $db->q("COMMIT;"); return $retval; } /** * * This will happen occasionally trying to store the * session data after abnormal program termination * */ logger('dba: no database: ' . print_r($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'); } }} function dba_timer() { return microtime(true); }