Blame view

libraries/regularlabs/src/Condition/Php.php 3.29 KB
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166
<?php
/**
 * @package         Regular Labs Library
 * @version         18.2.10140
 * 
 * @author          Peter van Westen <info@regularlabs.com>
 * @link            http://www.regularlabs.com
 * @copyright       Copyright © 2018 Regular Labs All Rights Reserved
 * @license         http://www.gnu.org/licenses/gpl-2.0.html GNU/GPL
 */

namespace RegularLabs\Library\Condition;

defined('_JEXEC') or die;

use JFactory;
use JFile;
use JModelLegacy;
use RegularLabs\Library\RegEx;

/**
 * Class Php
 * @package RegularLabs\Library\Condition
 */
class Php
	extends \RegularLabs\Library\Condition
{
	public function pass()
	{
		if ( ! is_array($this->selection))
		{
			$this->selection = [$this->selection];
		}

		$pass = false;
		foreach ($this->selection as $php)
		{
			// replace \n with newline and other fix stuff
			$php = str_replace('\|', '|', $php);
			$php = RegEx::replace('(?<!\\\)\\\n', "\n", $php);
			$php = trim(str_replace('[:REGEX_ENTER:]', '\n', $php));

			if ($php == '')
			{
				$pass = true;
				break;
			}

			ob_start();
			$pass = (bool) $this->execute($php, $this->article);
			ob_end_clean();

			if ($pass)
			{
				break;
			}
		}

		return $this->_($pass);
	}

	private function getArticleById($id = 0)
	{
		if ( ! $id)
		{
			return null;
		}

		if ( ! class_exists('ContentModelArticle'))
		{
			require_once JPATH_SITE . '/components/com_content/models/article.php';
		}

		$model = JModelLegacy::getInstance('article', 'contentModel');

		if ( ! method_exists($model, 'getItem'))
		{
			return null;
		}

		return $model->getItem($this->request->id);
	}

	public function execute($string = '', $article = null)
	{
		$function_name = 'regularlabs_php_' . md5($string);

		if (function_exists($function_name))
		{
			return $function_name();
		}

		$contents = $this->generateFileContents($function_name, $string);

		$folder    = JFactory::getConfig()->get('tmp_path', JPATH_ROOT . '/tmp');
		$temp_file = $folder . '/' . $function_name;

		JFile::write($temp_file, $contents);

		include_once $temp_file;

		if ( ! defined('JDEBUG') || ! JDEBUG)
		{
			@chmod($temp_file, 0777);
			@unlink($temp_file);
		}

		if ( ! function_exists($function_name))
		{
			// Something went wrong!
			return true;
		}

		if ( ! $article && strpos($string, '$article') !== false)
		{
			$article = null;
			if ($this->request->option == 'com_content' && $this->request->view == 'article')
			{
				$article = $this->getArticleById($this->request->id);
			}
		}

		return $function_name($article);
	}

	private function generateFileContents($function_name = 'rl_function', $string = '')
	{
		$init_variables = $this->getVarInits();

		$contents = [
			'<?php',
			'defined(\'_JEXEC\') or die;',
			'function ' . $function_name . '($article){',
			implode("\n", $init_variables),
			$string,
			';return true;',
			';}',
		];

		$contents = implode("\n", $contents);

		// Remove Zero Width spaces / (non-)joiners
		$contents = str_replace(
			[
				"\xE2\x80\x8B",
				"\xE2\x80\x8C",
				"\xE2\x80\x8D",
			],
			'',
			$contents
		);

		return $contents;
	}

	private function getVarInits()
	{
		return [
			'$app = $mainframe = JFactory::getApplication();',
			'$document = $doc = JFactory::getDocument();',
			'$database = $db = JFactory::getDbo();',
			'$user = JFactory::getUser();',
			'$Itemid = $app->input->getInt(\'Itemid\');',
		];
	}
}