system/libraries/Log.php

   1 <?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
   2 /**
   3  * CodeIgniter
   4  *
   5  * An open source application development framework for PHP 5.1.6 or newer
   6  *
   7  * @package             CodeIgniter
   8  * @author              ExpressionEngine Dev Team
   9  * @copyright   Copyright (c) 2008 - 2011, EllisLab, Inc.
  10  * @license             http://codeigniter.com/user_guide/license.html
  11  * @link                http://codeigniter.com
  12  * @since               Version 1.0
  13  * @filesource
  14  */
  15
  16 // ------------------------------------------------------------------------
  17
  18 /**
  19  * Logging Class
  20  *
  21  * @package             CodeIgniter
  22  * @subpackage  Libraries
  23  * @category    Logging
  24  * @author              ExpressionEngine Dev Team
  25  * @link                http://codeigniter.com/user_guide/general/errors.html
  26  */
  27 class CI_Log {
  28
  29         protected $_log_path;
  30         protected $_threshold   = 1;
  31         protected $_date_fmt    = 'Y-m-d H:i:s';
  32         protected $_enabled     = TRUE;
  33         protected $_levels      = array('ERROR' => '1', 'DEBUG' => '2',  'INFO' => '3', 'ALL' => '4');
  34
  35         /**
  36          * Constructor
  37          */
  38         public function __construct()
  39         {
  40                 $config =& get_config();
  41
  42                 $this->_log_path = ($config['log_path'] != '') ? $config['log_path'] : APPPATH.'logs/';
  43
  44                 if ( ! is_dir($this->_log_path) OR ! is_really_writable($this->_log_path))
  45                 {
  46                         $this->_enabled = FALSE;
  47                 }
  48
  49                 if (is_numeric($config['log_threshold']))
  50                 {
  51                         $this->_threshold = $config['log_threshold'];
  52                 }
  53
  54                 if ($config['log_date_format'] != '')
  55                 {
  56                         $this->_date_fmt = $config['log_date_format'];
  57                 }
  58         }
  59
  60         // --------------------------------------------------------------------
  61
  62         /**
  63          * Write Log File
  64          *
  65          * Generally this function will be called using the global log_message() function
  66          *
  67          * @param       string  the error level
  68          * @param       string  the error message
  69          * @param       bool    whether the error is a native PHP error
  70          * @return      bool
  71          */
  72         public function write_log($level = 'error', $msg, $php_error = FALSE)
  73         {
  74                 if ($this->_enabled === FALSE)
  75                 {
  76                         return FALSE;
  77                 }
  78
  79                 $level = strtoupper($level);
  80
  81                 if ( ! isset($this->_levels[$level]) OR ($this->_levels[$level] > $this->_threshold))
  82                 {
  83                         return FALSE;
  84                 }
  85
  86                 $filepath = $this->_log_path.'log-'.date('Y-m-d').EXT;
  87                 $message  = '';
  88
  89                 if ( ! file_exists($filepath))
  90                 {
  91                         $message .= "<"."?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed'); ?".">\n\n";
  92                 }
  93
  94                 if ( ! $fp = @fopen($filepath, FOPEN_WRITE_CREATE))
  95                 {
  96                         return FALSE;
  97                 }
  98
  99                 $message .= $level.' '.(($level == 'INFO') ? ' -' : '-').' '.date($this->_date_fmt). ' --> '.$msg."\n";
 100
 101                 flock($fp, LOCK_EX);
 102                 fwrite($fp, $message);
 103                 flock($fp, LOCK_UN);
 104                 fclose($fp);
 105
 106                 @chmod($filepath, FILE_WRITE_MODE);
 107                 return TRUE;
 108         }
 109
 110 }
 111 // END Log Class
 112
 113 /* End of file Log.php */
 114 /* Location: ./system/libraries/Log.php */