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Editing: ActionlogsHelper.php

<?php
/**
 * @package     Joomla.Administrator
 * @subpackage  com_actionlogs
 *
 * @copyright   (C) 2018 Open Source Matters, Inc. <https://www.joomla.org>
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\Component\Actionlogs\Administrator\Helper;

\defined('_JEXEC') or die;

use Generator;
use Joomla\CMS\Date\Date;
use Joomla\CMS\Factory;
use Joomla\CMS\Filesystem\Path;
use Joomla\CMS\Language\Text;
use Joomla\CMS\Router\Route;
use Joomla\String\StringHelper;

/**
 * Actionlogs component helper.
 *
 * @since  3.9.0
 */
class ActionlogsHelper
{
	/**
	 * Array of characters starting a formula
	 *
	 * @var    array
	 * @since  3.9.7
	 */
	private static $characters = array('=', '+', '-', '@');

/**
	 * Method to convert logs objects array to an iterable type for use with a CSV export
	 *
	 * @param   array|\Traversable  $data  The logs data objects to be exported
	 *
	 * @return  Generator
	 *
	 * @since   3.9.0
	 * @throws  \InvalidArgumentException
	 */
	public static function getCsvData($data): Generator
	{
		if (!is_iterable($data))
		{
			throw new \InvalidArgumentException(
				sprintf(
					'%s() requires an array or object implementing the Traversable interface, a %s was given.',
					__METHOD__,
					gettype($data) === 'object' ? get_class($data) : gettype($data)
				)
			);
		}

$disabledText = Text::_('COM_ACTIONLOGS_DISABLED');

// Header row
		yield ['Id', 'Action', 'Extension', 'Date', 'Name', 'IP Address'];

foreach ($data as $log)
		{
			$extension = strtok($log->extension, '.');

static::loadTranslationFiles($extension);

yield array(
				'id'         => $log->id,
				'message'    => self::escapeCsvFormula(strip_tags(static::getHumanReadableLogMessage($log, false))),
				'extension'  => self::escapeCsvFormula(Text::_($extension)),
				'date'       => (new Date($log->log_date, new \DateTimeZone('UTC')))->format('Y-m-d H:i:s T'),
				'name'       => self::escapeCsvFormula($log->name),
				'ip_address' => self::escapeCsvFormula($log->ip_address === 'COM_ACTIONLOGS_DISABLED' ? $disabledText : $log->ip_address)
			);
		}
	}

/**
	 * Load the translation files for an extension
	 *
	 * @param   string  $extension  Extension name
	 *
	 * @return  void
	 *
	 * @since   3.9.0
	 */
	public static function loadTranslationFiles($extension)
	{
		static $cache = array();
		$extension = strtolower($extension);

if (isset($cache[$extension]))
		{
			return;
		}

$lang   = Factory::getLanguage();
		$source = '';

switch (substr($extension, 0, 3))
		{
			case 'com':
			default:
				$source = JPATH_ADMINISTRATOR . '/components/' . $extension;
				break;

case 'lib':
				$source = JPATH_LIBRARIES . '/' . substr($extension, 4);
				break;

case 'mod':
				$source = JPATH_SITE . '/modules/' . $extension;
				break;

case 'plg':
				$parts = explode('_', $extension, 3);

if (count($parts) > 2)
				{
					$source = JPATH_PLUGINS . '/' . $parts[1] . '/' . $parts[2];
				}
				break;

case 'pkg':
				$source = JPATH_SITE;
				break;

case 'tpl':
				$source = JPATH_BASE . '/templates/' . substr($extension, 4);
				break;

}

$lang->load($extension, JPATH_ADMINISTRATOR)
			|| $lang->load($extension, $source);

if (!$lang->hasKey(strtoupper($extension)))
		{
			$lang->load($extension . '.sys', JPATH_ADMINISTRATOR)
				|| $lang->load($extension . '.sys', $source);
		}

$cache[$extension] = true;
	}

/**
	 * Get parameters to be
	 *
	 * @param   string  $context  The context of the content
	 *
	 * @return  mixed  An object contains content type parameters, or null if not found
	 *
	 * @since   3.9.0
	 */
	public static function getLogContentTypeParams($context)
	{
		$db = Factory::getDbo();
		$query = $db->getQuery(true)
			->select('a.*')
			->from($db->quoteName('#__action_log_config', 'a'))
			->where($db->quoteName('a.type_alias') . ' = :context')
			->bind(':context', $context);

$db->setQuery($query);

return $db->loadObject();
	}

/**
	 * Get human readable log message for a User Action Log
	 *
	 * @param   stdClass  $log            A User Action log message record
	 * @param   boolean   $generateLinks  Flag to disable link generation when creating a message
	 *
	 * @return  string
	 *
	 * @since   3.9.0
	 */
	public static function getHumanReadableLogMessage($log, $generateLinks = true)
	{
		static $links = array();

$message     = Text::_($log->message_language_key);
		$messageData = json_decode($log->message, true);

// Special handling for translation extension name
		if (isset($messageData['extension_name']))
		{
			static::loadTranslationFiles($messageData['extension_name']);
			$messageData['extension_name'] = Text::_($messageData['extension_name']);
		}

// Translating application
		if (isset($messageData['app']))
		{
			$messageData['app'] = Text::_($messageData['app']);
		}

// Translating type
		if (isset($messageData['type']))
		{
			$messageData['type'] = Text::_($messageData['type']);
		}

$linkMode = Factory::getApplication()->get('force_ssl', 0) >= 1 ? Route::TLS_FORCE : Route::TLS_IGNORE;

foreach ($messageData as $key => $value)
		{
			// Escape any markup in the values to prevent XSS attacks
			$value = htmlspecialchars($value, ENT_QUOTES, 'UTF-8');

// Convert relative url to absolute url so that it is clickable in action logs notification email
			if ($generateLinks && StringHelper::strpos($value, 'index.php?') === 0)
			{
				if (!isset($links[$value]))
				{
					$links[$value] = Route::link('administrator', $value, false, $linkMode, true);
				}

$value = $links[$value];
			}

$message = str_replace('{' . $key . '}', $value, $message);
		}

return $message;
	}

/**
	 * Get link to an item of given content type
	 *
	 * @param   string   $component
	 * @param   string   $contentType
	 * @param   integer  $id
	 * @param   string   $urlVar
	 * @param   JObject  $object
	 *
	 * @return  string  Link to the content item
	 *
	 * @since   3.9.0
	 */
	public static function getContentTypeLink($component, $contentType, $id, $urlVar = 'id', $object = null)
	{
		// Try to find the component helper.
		$eName = str_replace('com_', '', $component);
		$file  = Path::clean(JPATH_ADMINISTRATOR . '/components/' . $component . '/helpers/' . $eName . '.php');

if (file_exists($file))
		{
			$prefix = ucfirst(str_replace('com_', '', $component));
			$cName  = $prefix . 'Helper';

\JLoader::register($cName, $file);

if (class_exists($cName) && is_callable(array($cName, 'getContentTypeLink')))
			{
				return $cName::getContentTypeLink($contentType, $id, $object);
			}
		}

if (empty($urlVar))
		{
			$urlVar = 'id';
		}

// Return default link to avoid having to implement getContentTypeLink in most of our components
		return 'index.php?option=' . $component . '&task=' . $contentType . '.edit&' . $urlVar . '=' . $id;
	}

/**
	 * Load both enabled and disabled actionlog plugins language file.
	 *
	 * It is used to make sure actions log is displayed properly instead of only language items displayed when a plugin is disabled.
	 *
	 * @return  void
	 *
	 * @since   3.9.0
	 */
	public static function loadActionLogPluginsLanguage()
	{
		$lang = Factory::getLanguage();
		$db   = Factory::getDbo();

// Get all (both enabled and disabled) actionlog plugins
		$query = $db->getQuery(true)
			->select(
				$db->quoteName(
					array(
						'folder',
						'element',
						'params',
						'extension_id'
					),
					array(
						'type',
						'name',
						'params',
						'id'
					)
				)
			)
			->from('#__extensions')
			->where('type = ' . $db->quote('plugin'))
			->where('folder = ' . $db->quote('actionlog'))
			->where('state IN (0,1)')
			->order('ordering');
		$db->setQuery($query);

try
		{
			$rows = $db->loadObjectList();
		}
		catch (\RuntimeException $e)
		{
			$rows = array();
		}

if (empty($rows))
		{
			return;
		}

foreach ($rows as $row)
		{
			$name      = $row->name;
			$type      = $row->type;
			$extension = 'Plg_' . $type . '_' . $name;
			$extension = strtolower($extension);

// If language already loaded, don't load it again.
			if ($lang->getPaths($extension))
			{
				continue;
			}

$lang->load($extension, JPATH_ADMINISTRATOR)
			|| $lang->load($extension, JPATH_PLUGINS . '/' . $type . '/' . $name);
		}

// Load plg_system_actionlogs too
		$lang->load('plg_system_actionlogs', JPATH_ADMINISTRATOR);

// Load com_privacy too.
		$lang->load('com_privacy', JPATH_ADMINISTRATOR);
	}

/**
	 * Escapes potential characters that start a formula in a CSV value to prevent injection attacks
	 *
	 * @param   mixed  $value  csv field value
	 *
	 * @return  mixed
	 *
	 * @since   3.9.7
	 */
	protected static function escapeCsvFormula($value)
	{
		if ($value == '')
		{
			return $value;
		}

if (in_array($value[0], self::$characters, true))
		{
			$value = ' ' . $value;
		}

return $value;
	}
}

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