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<?php
/**
* Piwik - Open source web analytics
*
* @link http://piwik.org
* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*
* @category Piwik
* @package Piwik
*/
/**
*
* @package Piwik
* @subpackage Piwik_Log
* @see Zend_Log, libs/Zend/Log.php
* @link http://framework.zend.com/manual/en/zend.log.html
*/
abstract class Piwik_Log extends Zend_Log
{
protected $logToDatabaseTableName = null;
protected $logToDatabaseColumnMapping = null;
protected $logToFileFilename = null;
protected $fileFormatter = null;
protected $screenFormatter = null;
protected $currentRequestKey;
function __construct($logToFileFilename,
$fileFormatter,
$screenFormatter,
$logToDatabaseTableName,
$logToDatabaseColumnMapping)
{
parent::__construct();
$this->currentRequestKey = substr(Piwik_Common::generateUniqId(), 0, 8);
$log_dir = Piwik_Config::getInstance()->log['logger_file_path'];
if ($log_dir[0] != '/' && $log_dir[0] != DIRECTORY_SEPARATOR) {
$log_dir = PIWIK_USER_PATH . '/' . $log_dir;
}
$this->logToFileFilename = $log_dir . '/' . $logToFileFilename;
$this->fileFormatter = $fileFormatter;
$this->screenFormatter = $screenFormatter;
$this->logToDatabaseTableName = Piwik_Common::prefixTable($logToDatabaseTableName);
$this->logToDatabaseColumnMapping = $logToDatabaseColumnMapping;
}
function addWriteToFile()
{
Piwik_Common::mkdir(dirname($this->logToFileFilename));
$writerFile = new Zend_Log_Writer_Stream($this->logToFileFilename);
$writerFile->setFormatter($this->fileFormatter);
$this->addWriter($writerFile);
}
function addWriteToNull()
{
$this->addWriter(new Zend_Log_Writer_Null);
}
function addWriteToDatabase()
{
$writerDb = new Zend_Log_Writer_Db(
Zend_Registry::get('db'),
$this->logToDatabaseTableName,
$this->logToDatabaseColumnMapping);
$this->addWriter($writerDb);
}
function addWriteToScreen()
{
$writerScreen = new Zend_Log_Writer_Stream('php://output');
$writerScreen->setFormatter($this->screenFormatter);
$this->addWriter($writerScreen);
}
public function getWritersCount()
{
return count($this->_writers);
}
/**
* Log an event
* @param string $event
* @param int $priority
* @param null $extras
* @throws Zend_Log_Exception
* @return void
*/
public function log($event, $priority, $extras = null)
{
// sanity checks
if (empty($this->_writers)) {
throw new Zend_Log_Exception('No writers were added');
}
$event['timestamp'] = date('Y-m-d H:i:s');
$event['requestKey'] = $this->currentRequestKey;
// pack into event required by filters and writers
$event = array_merge($event, $this->_extras);
// one message must stay on one line
if (isset($event['message'])) {
$event['message'] = str_replace(array(PHP_EOL, "\n"), " ", $event['message']);
}
// Truncate the backtrace which can be too long to display in the browser
if (!empty($event['backtrace'])) {
$maxSizeOutputBytes = 1024 * 1024; // no more than 1M output please
$truncateBacktraceLineAfter = 1000;
$maxLines = ceil($maxSizeOutputBytes / $truncateBacktraceLineAfter);
$bt = explode("\n", $event['backtrace']);
foreach ($bt as $count => &$line) {
if (strlen($line) > $truncateBacktraceLineAfter) {
$line = substr($line, 0, $truncateBacktraceLineAfter) . '...';
}
if ($count > $maxLines) {
$line .= "\nTruncated error message.";
break;
}
}
$event['backtrace'] = implode("\n", $bt);
}
// abort if rejected by the global filters
foreach ($this->_filters as $filter) {
if (!$filter->accept($event)) {
return;
}
}
// send to each writer
foreach ($this->_writers as $writer) {
$writer->write($event);
}
}
}
/**
*
* @package Piwik
* @subpackage Piwik_Log
*/
class Piwik_Log_Formatter_FileFormatter implements Zend_Log_Formatter_Interface
{
/**
* Formats data into a single line to be written by the writer.
*
* @param array $event event data
* @return string formatted line to write to the log
*/
public function format($event)
{
foreach ($event as &$value) {
$value = str_replace("\n", '\n', $value);
$value = '"' . $value . '"';
}
$ts = $event['timestamp'];
unset($event['timestamp']);
return $ts . ' ' . implode(" ", $event) . "\n";
}
}
/**
*
* @package Piwik
* @subpackage Piwik_Log
*/
class Piwik_Log_Formatter_ScreenFormatter implements Zend_Log_Formatter_Interface
{
function formatEvent($event)
{
// no injection in error messages, backtrace when displayed on screen
return array_map(array('Piwik_Common', 'sanitizeInputValue'), $event);
}
function format($string)
{
return self::getFormattedString($string);
}
static public function getFormattedString($string)
{
if (!Piwik_Common::isPhpCliMode()) {
@header('Content-Type: text/html; charset=utf-8');
}
return $string;
}
}
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