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<?php
/**
* CodeIgniter
*
* An open source application development framework for PHP 5.2.4 or newer
*
* NOTICE OF LICENSE
*
* Licensed under the Open Software License version 3.0
*
* This source file is subject to the Open Software License (OSL 3.0) that is
* bundled with this package in the files license.txt / license.rst. It is
* also available through the world wide web at this URL:
* http://opensource.org/licenses/OSL-3.0
* If you did not receive a copy of the license and are unable to obtain it
* through the world wide web, please send an email to
* licensing@ellislab.com so we can send you a copy immediately.
*
* @package CodeIgniter
* @author EllisLab Dev Team
* @copyright Copyright (c) 2008 - 2013, EllisLab, Inc. (http://ellislab.com/)
* @license http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
* @link http://codeigniter.com
* @since Version 1.0
* @filesource
*/
defined('BASEPATH') OR exit('No direct script access allowed');
/**
* Logging Class
*
* @package CodeIgniter
* @subpackage Libraries
* @category Logging
* @author EllisLab Dev Team
* @link http://codeigniter.com/user_guide/general/errors.html
*/
class CI_Log {
/**
* Path to save log files
*
* @var string
*/
protected $_log_path;
/**
* Level of logging
*
* @var int
*/
protected $_threshold = 1;
/**
* Highest level of logging
*
* @var int
*/
protected $_threshold_max = 0;
/**
* Array of threshold levels to log
*
* @var array
*/
protected $_threshold_array = array();
/**
* Format of timestamp for log files
*
* @var string
*/
protected $_date_fmt = 'Y-m-d H:i:s';
/**
* Filename extension
*
* @var string
*/
protected $_file_ext;
/**
* Whether or not the logger can write to the log files
*
* @var bool
*/
protected $_enabled = TRUE;
/**
* Predefined logging levels
*
* @var array
*/
protected $_levels = array('ERROR' => 1, 'DEBUG' => 2, 'INFO' => 3, 'ALL' => 4);
// --------------------------------------------------------------------
/**
* Class constructor
*
* @return void
*/
public function __construct()
{
$config =& get_config();
$this->_log_path = ($config['log_path'] !== '') ? $config['log_path'] : APPPATH.'logs/';
$this->_file_ext = (isset($config['log_file_extension']) && $config['log_file_extension'] !== '')
? ltrim($config['log_file_extension'], '.') : 'php';
file_exists($this->_log_path) OR mkdir($this->_log_path, DIR_WRITE_MODE, TRUE);
if ( ! is_dir($this->_log_path) OR ! is_really_writable($this->_log_path))
{
$this->_enabled = FALSE;
}
if (is_numeric($config['log_threshold']))
{
$this->_threshold = (int) $config['log_threshold'];
}
elseif (is_array($config['log_threshold']))
{
$this->_threshold = $this->_threshold_max;
$this->_threshold_array = array_flip($config['log_threshold']);
}
if ($config['log_date_format'] !== '')
{
$this->_date_fmt = $config['log_date_format'];
}
}
// --------------------------------------------------------------------
/**
* Write Log File
*
* Generally this function will be called using the global log_message() function
*
* @param string the error level: 'error', 'debug' or 'info'
* @param string the error message
* @param bool whether the error is a native PHP error
* @return bool
*/
public function write_log($level, $msg)
{
if ($this->_enabled === FALSE)
{
return FALSE;
}
$level = strtoupper($level);
if (( ! isset($this->_levels[$level]) OR ($this->_levels[$level] > $this->_threshold))
&& ! isset($this->_threshold_array[$this->_levels[$level]]))
{
return FALSE;
}
$filepath = $this->_log_path.'log-'.date('Y-m-d').'.'.$this->_file_ext;
$message = '';
if ( ! file_exists($filepath))
{
$newfile = TRUE;
// Only add protection to php files
if ($this->_file_ext === 'php')
{
$message .= "<?php defined('BASEPATH') OR exit('No direct script access allowed'); ?>\n\n";
}
}
if ( ! $fp = @fopen($filepath, FOPEN_WRITE_CREATE))
{
return FALSE;
}
$message .= $level.' '.($level === 'INFO' ? ' -' : '-').' '.date($this->_date_fmt).' --> '.$msg."\n";
flock($fp, LOCK_EX);
fwrite($fp, $message);
flock($fp, LOCK_UN);
fclose($fp);
if (isset($newfile) && $newfile === TRUE)
{
@chmod($filepath, FILE_WRITE_MODE);
}
return TRUE;
}
}
/* End of file Log.php */
/* Location: ./system/core/Log.php */
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