inc/poche/Tools.class.php

   1 <?php
   2 /**
   3  * poche, a read it later open source system
   4  *
   5  * @category   poche
   6  * @author     Nicolas Lœuillet <support@inthepoche.com>
   7  * @copyright  2013
   8  * @license    http://www.wtfpl.net/ see COPYING file
   9  */
  10
  11 class Tools
  12 {
  13     public static function initPhp()
  14     {
  15         define('START_TIME', microtime(true));
  16
  17         if (phpversion() < 5) {
  18             die(_('Oops, it seems you don\'t have PHP 5.'));
  19         }
  20
  21         error_reporting(E_ALL);
  22
  23         function stripslashesDeep($value) {
  24             return is_array($value)
  25                 ? array_map('stripslashesDeep', $value)
  26                 : stripslashes($value);
  27         }
  28
  29         if (get_magic_quotes_gpc()) {
  30             $_POST = array_map('stripslashesDeep', $_POST);
  31             $_GET = array_map('stripslashesDeep', $_GET);
  32             $_COOKIE = array_map('stripslashesDeep', $_COOKIE);
  33         }
  34
  35         ob_start();
  36         register_shutdown_function('ob_end_flush');
  37     }
  38
  39     public static function getPocheUrl()
  40     {
  41         $https = (!empty($_SERVER['HTTPS'])
  42                     && (strtolower($_SERVER['HTTPS']) == 'on'))
  43             || (isset($_SERVER["SERVER_PORT"])
  44                     && $_SERVER["SERVER_PORT"] == '443'); // HTTPS detection.
  45         $serverport = (!isset($_SERVER["SERVER_PORT"])
  46             || $_SERVER["SERVER_PORT"] == '80'
  47             || ($https && $_SERVER["SERVER_PORT"] == '443')
  48             ? '' : ':' . $_SERVER["SERVER_PORT"]);
  49
  50         $scriptname = str_replace('/index.php', '/', $_SERVER["SCRIPT_NAME"]);
  51
  52         if (!isset($_SERVER["SERVER_NAME"])) {
  53             return $scriptname;
  54         }
  55
  56         return 'http' . ($https ? 's' : '') . '://'
  57             . $_SERVER["SERVER_NAME"] . $serverport . $scriptname;
  58     }
  59
  60     public static function redirect($url = '')
  61     {
  62         if ($url === '') {
  63             $url = (empty($_SERVER['HTTP_REFERER'])?'?':$_SERVER['HTTP_REFERER']);
  64             if (isset($_POST['returnurl'])) {
  65                 $url = $_POST['returnurl'];
  66             }
  67         }
  68
  69         # prevent loop
  70         if (empty($url) || parse_url($url, PHP_URL_QUERY) === $_SERVER['QUERY_STRING']) {
  71             $url = Tools::getPocheUrl();
  72         }
  73
  74         if (substr($url, 0, 1) !== '?') {
  75             $ref = Tools::getPocheUrl();
  76             if (substr($url, 0, strlen($ref)) !== $ref) {
  77                 $url = $ref;
  78             }
  79         }
  80         self::logm('redirect to ' . $url);
  81         header('Location: '.$url);
  82         exit();
  83     }
  84
  85     public static function getTplFile($view)
  86     {
  87         $tpl_file = 'home.twig';
  88         switch ($view)
  89         {
  90             case 'install':
  91                 $tpl_file = 'install.twig';
  92                 break;
  93             case 'import';
  94                 $tpl_file = 'import.twig';
  95                 break;
  96             case 'export':
  97                 $tpl_file = 'export.twig';
  98                 break;
  99             case 'config':
 100                 $tpl_file = 'config.twig';
 101                 break;
 102             case 'view':
 103                 $tpl_file = 'view.twig';
 104                 break;
 105             default:
 106             break;
 107         }
 108         return $tpl_file;
 109     }
 110
 111     public static function getFile($url)
 112     {
 113         $timeout = 15;
 114         $useragent = "Mozilla/5.0 (Windows NT 5.1; rv:18.0) Gecko/20100101 Firefox/18.0";
 115
 116         if (in_array ('curl', get_loaded_extensions())) {
 117             # Fetch feed from URL
 118             $curl = curl_init();
 119             curl_setopt($curl, CURLOPT_URL, $url);
 120             curl_setopt($curl, CURLOPT_TIMEOUT, $timeout);
 121             curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true);
 122             curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
 123             curl_setopt($curl, CURLOPT_HEADER, false);
 124
 125             # for ssl, do not verified certificate
 126             curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
 127             curl_setopt($curl, CURLOPT_AUTOREFERER, TRUE );
 128
 129             # FeedBurner requires a proper USER-AGENT...
 130             curl_setopt($curl, CURL_HTTP_VERSION_1_1, true);
 131             curl_setopt($curl, CURLOPT_ENCODING, "gzip, deflate");
 132             curl_setopt($curl, CURLOPT_USERAGENT, $useragent);
 133
 134             $data = curl_exec($curl);
 135             $httpcode = curl_getinfo($curl, CURLINFO_HTTP_CODE);
 136             $httpcodeOK = isset($httpcode) and ($httpcode == 200 or $httpcode == 301);
 137             curl_close($curl);
 138         } else {
 139             # create http context and add timeout and user-agent
 140             $context = stream_context_create(
 141                 array(
 142                     'http' => array(
 143                         'timeout' => $timeout,
 144                         'header' => "User-Agent: " . $useragent,
 145                         'follow_location' => true
 146                     ),
 147                     'ssl' => array(
 148                         'verify_peer' => false,
 149                         'allow_self_signed' => true
 150                     )
 151                 )
 152             );
 153
 154             # only download page lesser than 4MB
 155             $data = @file_get_contents($url, false, $context, -1, 4000000);
 156
 157             if (isset($http_response_header) and isset($http_response_header[0])) {
 158                 $httpcodeOK = isset($http_response_header) and isset($http_response_header[0]) and ((strpos($http_response_header[0], '200 OK') !== FALSE) or (strpos($http_response_header[0], '301 Moved Permanently') !== FALSE));
 159             }
 160         }
 161
 162         # if response is not empty and response is OK
 163         if (isset($data) and isset($httpcodeOK) and $httpcodeOK) {
 164
 165             # take charset of page and get it
 166             preg_match('#<meta .*charset=.*>#Usi', $data, $meta);
 167
 168             # if meta tag is found
 169             if (!empty($meta[0])) {
 170                 preg_match('#charset="?(.*)"#si', $meta[0], $encoding);
 171                 # if charset is found set it otherwise, set it to utf-8
 172                 $html_charset = (!empty($encoding[1])) ? strtolower($encoding[1]) : 'utf-8';
 173                 if (empty($encoding[1])) $encoding[1] = 'utf-8';
 174             } else {
 175                 $html_charset = 'utf-8';
 176                 $encoding[1] = '';
 177             }
 178
 179             # replace charset of url to charset of page
 180             $data = str_replace('charset=' . $encoding[1], 'charset=' . $html_charset, $data);
 181
 182             return $data;
 183         }
 184         else {
 185             return FALSE;
 186         }
 187     }
 188
 189     public static function renderJson($data)
 190     {
 191         header('Cache-Control: no-cache, must-revalidate');
 192         header('Expires: Sat, 26 Jul 1997 05:00:00 GMT');
 193         header('Content-type: application/json; charset=UTF-8');
 194         echo json_encode($data);
 195         exit();
 196     }
 197
 198     public static function logm($message)
 199     {
 200         if (DEBUG_POCHE) {
 201             $t = strval(date('Y/m/d_H:i:s')) . ' - ' . $_SERVER["REMOTE_ADDR"] . ' - ' . strval($message) . "\n";
 202             file_put_contents(CACHE . '/log.txt', $t, FILE_APPEND);
 203             error_log('DEBUG POCHE : ' . $message);
 204         }
 205     }
 206
 207     public static function encodeString($string)
 208     {
 209         return sha1($string . SALT);
 210     }
 211
 212     public static function checkVar($var, $default = '')
 213     {
 214         return ((isset ($_REQUEST["$var"])) ? htmlentities($_REQUEST["$var"]) : $default);
 215     }
 216
 217     public static function getDomain($url)
 218     {
 219       $pieces = parse_url($url);
 220       $domain = isset($pieces['host']) ? $pieces['host'] : '';
 221       if (preg_match('/(?P<domain>[a-z0-9][a-z0-9\-]{1,63}\.[a-z\.]{2,6})$/i', $domain, $regs)) {
 222         return $regs['domain'];
 223       }
 224
 225       return FALSE;
 226     }
 227
 228     public static function getReadingTime($text) {
 229         $word = str_word_count(strip_tags($text));
 230         $minutes = floor($word / 200);
 231         $seconds = floor($word % 200 / (200 / 60));
 232         $time = array('minutes' => $minutes, 'seconds' => $seconds);
 233
 234         return $minutes;
 235     }
 236
 237
 238     public static function createMyConfig()
 239     {
 240         $myconfig_file = './inc/poche/myconfig.inc.php';
 241
 242         if (!is_writable('./inc/poche/')) {
 243             self::logm('you don\'t have write access to create ./inc/poche/myconfig.inc.php');
 244             die('You don\'t have write access to create ./inc/poche/myconfig.inc.php.');
 245         }
 246
 247         if (!file_exists($myconfig_file))
 248         {
 249             $fp = fopen($myconfig_file, 'w');
 250             fwrite($fp, '<?php'."\r\n");
 251             fwrite($fp, "define ('POCHE_VERSION', '1.0-beta3');" . "\r\n");
 252             fwrite($fp, "define ('SALT', '" . md5(time() . $_SERVER['SCRIPT_FILENAME'] . rand()) . "');" . "\r\n");
 253             fwrite($fp, "define ('LANG', 'en_EN.utf8');" . "\r\n");
 254             fclose($fp);
 255         }
 256     }
 257 }