| <?php
/**
* @package Joomla.Platform
* @subpackage Log
*
* @copyright Copyright (C) 2005 - 2011 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
defined('JPATH_PLATFORM') or die;
jimport('joomla.log.log');
jimport('joomla.log.logger');
jimport('joomla.filesystem.folder');
/**
* Joomla! Formatted Text File Log class
*
* This class is designed to use as a base for building formatted text files for output. By
* default it emulates the SysLog style format output. This is a disk based output format.
*
* @package Joomla.Platform
* @subpackage Log
* @since 11.1
*/
class JLoggerFormattedText extends JLogger
{
/**
* @var resource The file pointer for the log file.
* @since 11.1
*/
protected $file;
/**
* @var string The format for which each entry follows in the log file. All fields must be named
* in all caps and be within curly brackets eg. {FOOBAR}.
* @since 11.1
*/
protected $format = '{DATETIME} {PRIORITY} {CATEGORY} {MESSAGE}';
/**
* @var array The parsed fields from the format string.
* @since 11.1
*/
protected $fields = array();
/**
* @var string The full filesystem path for the log file.
* @since 11.1
*/
protected $path;
/**
* @var array Translation array for JLogEntry priorities to text strings.
* @since 11.1
*/
protected $priorities = array(
JLog::EMERGENCY => 'EMERGENCY',
JLog::ALERT => 'ALERT',
JLog::CRITICAL => 'CRITICAL',
JLog::ERROR => 'ERROR',
JLog::WARNING => 'WARNING',
JLog::NOTICE => 'NOTICE',
JLog::INFO => 'INFO',
JLog::DEBUG => 'DEBUG'
);
/**
* Constructor.
*
* @param array $options Log object options.
*
* @return void
*
* @since 11.1
*/
public function __construct(array & $options)
{
// Call the parent constructor.
parent::__construct($options);
// The name of the text file defaults to 'error.php' if not explicitly given.
if (empty($this->options['text_file'])) {
$this->options['text_file'] = 'error.php';
}
// The name of the text file path defaults to that which is set in configuration if not explicitly given.
if (empty($this->options['text_file_path'])) {
$this->options['text_file_path'] = JFactory::getConfig()->get('log_path');
}
// False to treat the log file as a php file.
if (empty($this->options['text_file_no_php'])) {
$this->options['text_file_no_php'] = false;
}
// Build the full path to the log file.
$this->path = $this->options['text_file_path'].'/'.$this->options['text_file'];
// Use the default entry format unless explicitly set otherwise.
if (!empty($this->options['text_entry_format'])) {
$this->format = (string) $this->options['text_entry_format'];
}
// Build the fields array based on the format string.
$this->parseFields();
}
/**
* Destructor.
*
* @return void
*
* @since 11.1
*/
public function __destruct()
{
if (is_resource($this->file)) {
fclose($this->file);
}
}
/**
* Method to add an entry to the log.
*
* @param JLogEntry The log entry object to add to the log.
*
* @return boolean True on success.
*
* @since 11.1
* @throws LogException
*/
public function addEntry(JLogEntry $entry)
{
// Initialise the file if not already done.
if (!is_resource($this->file)) {
$this->initFile();
}
// Set some default field values if not already set.
if (!isset ($entry->clientIP)) {
// Check for proxies as well.
if (isset($_SERVER['REMOTE_ADDR'])) {
$entry->clientIP = $_SERVER['REMOTE_ADDR'];
}
elseif (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) {
$entry->clientIP = $_SERVER['HTTP_X_FORWARDED_FOR'];
}
elseif (isset($_SERVER['HTTP_CLIENT_IP'])) {
$entry->clientIP = $_SERVER['HTTP_CLIENT_IP'];
}
}
// If the time field is missing or the date field isn't only the date we need to rework it.
if ((strlen($entry->date) != 10) || !isset($entry->time)) {
// Get the date and time strings in GMT.
$entry->datetime = $entry->date->toISO8601();
$entry->time = $entry->date->format('H:i:s', false);
$entry->date = $entry->date->format('Y-m-d', false);
}
// Decode the entry priority into an English string.
$entry->priority = $this->priorities[$entry->priority];
// Get a list of all the entry keys and make sure they are upper case.
$tmp = array_change_key_case(get_object_vars($entry), CASE_UPPER);
// Fill in field data for the line.
$line = $this->format;
foreach ($this->fields as $field)
{
$line = str_replace('{'.$field.'}', (isset($tmp[$field])) ? $tmp[$field] : '-', $line);
}
// Write the new entry to the file.
if (!fputs($this->file, $line."\n")) {
throw new LogException();
}
}
/**
* Method to generate the log file header.
*
* @return void
*
* @since 11.1
*/
protected function generateFileHeader()
{
// Initialize variables.
$head = array();
// Build the log file header.
// If the no php flag is not set add the php die statement.
if (empty($this->options['text_file_no_php'])) {
$head[] = '#<?php die(\'Forbidden.\'); ?>';
}
$head[] = '#Date: '.gmdate('Y-m-d H:i:s').' UTC';
$head[] = '#Software: '.JVersion::getLongVersion();
$head[] = '';
// Prepare the fields string
$head[] = '#Fields: '.strtolower(str_replace('}', '', str_replace('{', '', $this->format)));
$head[] = '';
return implode("\n", $head);
}
/**
* Method to initialise the log file. This will create the folder path to the file if it doesn't already
* exist and also get a new file header if the file doesn't already exist. If the file already exists it
* will simply open it for writing.
*
* @return void
*
* @since 11.1
*/
protected function initFile()
{
// If the file doesn't already exist we need to create it and generate the file header.
if (!is_file($this->path)) {
// Make sure the folder exists in which to create the log file.
JFolder::create(dirname($this->path));
// Build the log file header.
$head = $this->generateFileHeader();
}
else {
$head = false;
}
// Open the file for writing (append mode).
if (!$this->file = fopen($this->path, 'a')) {
// Throw exception.
}
if ($head) {
if (!fputs($this->file, $head)) {
throw new LogException();
}
}
}
/**
* Method to parse the format string into an array of fields.
*
* @return void
*
* @since 11.1
*/
protected function parseFields()
{
// Initialise variables.
$this->fields = array();
$matches = array();
// Get all of the available fields in the format string.
preg_match_all("/{(.*?)}/i", $this->format, $matches);
// Build the parsed fields list based on the found fields.
foreach ($matches[1] as $match)
{
$this->fields[] = strtoupper($match);
}
}
}
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