0d60dbef31
added exception handling to index.php, please mind that there is no recovery at the moment added transactions to db update. Please mind that they might not be supported by db table engines. added admin email on failed updates added german translation for admin email
325 lines
7.1 KiB
PHP
325 lines
7.1 KiB
PHP
<?php
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require_once('include/datetime.php');
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/**
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*
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* MySQL database class
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*
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* For debugging, insert 'dbg(1);' anywhere in the program flow.
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* dbg(0); will turn it off. Logging is performed at LOGGER_DATA level.
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* When logging, all binary info is converted to
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* text and html entities are escaped so that
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* the debugging stream is safe to view
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* within both terminals and web pages.
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*
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*/
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if(! class_exists('dba')) {
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class dba {
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private $debug = 0;
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private $db;
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public $mysqli = true;
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public $connected = false;
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public $error = false;
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function __construct($server,$user,$pass,$db,$install = false) {
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$server = trim($server);
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$user = trim($user);
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$pass = trim($pass);
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$db = trim($db);
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//we need both, server and username, so fail if one is missing
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if (!(strlen($server) && strlen($user))){
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$this->connected = false;
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$this->db = null;
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throw new InvalidArgumentException(t("Server name of user name are missing. "));
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}
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//when we are installing
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if($install) {
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if(strlen($server) && ($server !== 'localhost') && ($server !== '127.0.0.1')) {
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if(! dns_get_record($server, DNS_A + DNS_CNAME + DNS_PTR)) {
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$this->connected = false;
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$this->db = null;
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throw new InvalidArgumentException( t('Cannot locate DNS info for database server \'%s\''), $server);
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}
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}
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}
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if(class_exists('mysqli')) {
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$this->db = new mysqli($server,$user,$pass,$db);
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if(NULL === $this->db->connect_error()) {
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$this->connected = true;
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} else {
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throw new RuntimeException($this->db->connect_error());
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}
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} else {
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$this->mysqli = false;
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$this->db = mysql_connect($server,$user,$pass);
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if($this->db && mysql_select_db($db,$this->db)) {
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$this->connected = true;
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} else {
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throw new RuntimeException(mysql_error());
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}
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}
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}
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public function getdb() {
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return $this->db;
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}
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public function q($sql) {
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if((! $this->db) || (! $this->connected)) {
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throw new RuntimeException(t("There is no db connection. "));
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}
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if($this->mysqli) {
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$result = $this->db->query($sql);
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} else {
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$result = mysql_query($sql,$this->db);
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}
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//on debug mode or fail, the query is written to the log.
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//this won't work if logger can not read it's logging level
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//from the db.
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if($this->debug || FALSE === $result) {
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$mesg = '';
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if($result === false) {
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$mesg = 'false '.$this->error();
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} elseif($result === true) {
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$mesg = 'true';
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} else {
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if($this->mysqli) {
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$mesg = $result->num_rows . t(' results') . EOL;
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} else {
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$mesg = mysql_num_rows($result) . t(' results') . EOL;
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}
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}
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$str = 'SQL = ' . printable($sql) . EOL . t('SQL returned ') . $mesg . EOL;
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// If dbfail.out exists, we will write any failed calls directly to it,
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// regardless of any logging that may or may nor be in effect.
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// These usually indicate SQL syntax errors that need to be resolved.
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if(file_exists('dbfail.out')) {
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file_put_contents('dbfail.out', datetime_convert() . "\n" . $str . "\n", FILE_APPEND);
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}
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logger('dba: ' . $str );
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if(FALSE===$result) {
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throw new RuntimeException('dba: ' . $str);
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}
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}
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if($result === true) {
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return $result;
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}
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$r = array();
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if($this->mysqli) {
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if($result->num_rows) {
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while($x = $result->fetch_array(MYSQLI_ASSOC)) {
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$r[] = $x;
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}
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$result->free_result();
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}
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} else {
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if(mysql_num_rows($result)) {
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while($x = mysql_fetch_array($result, MYSQL_ASSOC)) {
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$r[] = $x;
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}
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mysql_free_result($result);
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}
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}
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if($this->debug) {
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logger('dba: ' . printable(print_r($r, true)));
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}
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return($r);
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}
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private function error() {
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if($this->mysqli) {
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return $this->db->error;
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} else {
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return mysql_error($this->db);
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}
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}
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public function beginTransaction() {
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if($this->mysqli) {
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return $this->db->autocommit(false);
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} else {
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//no transaction support in mysql module...
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mysql_query('SET AUTOCOMMIT = 0;', $db);
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}
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}
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public function rollback() {
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if($this->mysqli) {
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return $this->db->rollback();
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} else {
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//no transaction support in mysql module...
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mysql_query('ROLLBACK;', $db);
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}
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$this->stopTransaction();
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}
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public function commit() {
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if($this->mysqli) {
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return $this->db->commit();
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} else {
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//no transaction support in mysql module...
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mysql_query('COMMIT;', $db);
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}
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$this->stopTransaction();
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}
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private function stopTransaction() {
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if($this->mysqli) {
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return $this->db->autocommit(true);
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} else {
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//no transaction support in mysql module...
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mysql_query('SET AUTOCOMMIT = 1;', $db);
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}
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}
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public function dbg($dbg) {
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$this->debug = $dbg;
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}
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public function escape($str) {
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if($this->db && $this->connected) {
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if($this->mysqli) {
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return $this->db->real_escape_string($str);
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} else {
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return mysql_real_escape_string($str,$this->db);
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}
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}
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}
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function __destruct() {
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if ($this->db) {
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if($this->mysqli) {
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$this->db->close();
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}
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} else {
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mysql_close($this->db);
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}
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}
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}
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}
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if(! function_exists('printable')) {
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function printable($s) {
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$s = preg_replace("~([\x01-\x08\x0E-\x0F\x10-\x1F\x7F-\xFF])~",".", $s);
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$s = str_replace("\x00",'.',$s);
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if(x($_SERVER,'SERVER_NAME'))
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$s = escape_tags($s);
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return $s;
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}
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}
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// Procedural functions
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if(! function_exists('dbg')) {
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function dbg($state) {
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global $db;
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if($db)
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$db->dbg($state);
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}
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}
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if(! function_exists('dbesc')) {
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function dbesc($str) {
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global $db;
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if($db && $db->connected)
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return($db->escape($str));
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else
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return(str_replace("'","\\'",$str));
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}
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}
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// Function: q($sql,$args);
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// Description: execute SQL query with printf style args.
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// Example: $r = q("SELECT * FROM `%s` WHERE `uid` = %d",
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// 'user', 1);
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if(! function_exists('q')) {
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function q($sql) {
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global $db;
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$args = func_get_args();
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unset($args[0]);
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if($db && $db->connected) {
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$stmt = vsprintf($sql,$args);
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if($stmt === false)
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logger('dba: vsprintf error: ' . print_r(debug_backtrace(),true));
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return $db->q($stmt);
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}
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/**
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*
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* This will happen occasionally trying to store the
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* session data after abnormal program termination
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*
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*/
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logger('dba: no database: ' . print_r($args,true));
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return false;
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}
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}
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/**
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*
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* Raw db query, no arguments
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*
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*/
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if(! function_exists('dbq')) {
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function dbq($sql) {
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global $db;
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if($db && $db->connected)
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$ret = $db->q($sql);
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else
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$ret = false;
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return $ret;
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}
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}
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// Caller is responsible for ensuring that any integer arguments to
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// dbesc_array are actually integers and not malformed strings containing
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// SQL injection vectors. All integer array elements should be specifically
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// cast to int to avoid trouble.
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if(! function_exists('dbesc_array_cb')) {
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function dbesc_array_cb(&$item, $key) {
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if(is_string($item))
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$item = dbesc($item);
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}
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}
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if(! function_exists('dbesc_array')) {
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function dbesc_array(&$arr) {
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if(is_array($arr) && count($arr)) {
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array_walk($arr,'dbesc_array_cb');
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}
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}
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}
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