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                     && $_SERVER["SERVER_PORT"] == '443') // HTTPS detection.
  45             || (isset($_SERVER["SERVER_PORT"]) //Custom HTTPS port detection
  46                     && $_SERVER["SERVER_PORT"] == SSL_PORT);
  47
  48         $serverport = (!isset($_SERVER["SERVER_PORT"])
  49             || $_SERVER["SERVER_PORT"] == '80'
  50             || ($https && $_SERVER["SERVER_PORT"] == '443')
  51             || ($https && $_SERVER["SERVER_PORT"]==SSL_PORT) //Custom HTTPS port detection
  52             ? '' : ':' . $_SERVER["SERVER_PORT"]);
  53
  54         $scriptname = str_replace('/index.php', '/', $_SERVER["SCRIPT_NAME"]);
  55
  56         if (!isset($_SERVER["HTTP_HOST"])) {
  57             return $scriptname;
  58         }
  59
  60         return 'http' . ($https ? 's' : '') . '://'
  61             . $_SERVER["HTTP_HOST"] . $serverport . $scriptname;
  62     }
  63
  64     public static function redirect($url = '')
  65     {
  66         if ($url === '') {
  67             $url = (empty($_SERVER['HTTP_REFERER'])?'?':$_SERVER['HTTP_REFERER']);
  68             if (isset($_POST['returnurl'])) {
  69                 $url = $_POST['returnurl'];
  70             }
  71         }
  72
  73         # prevent loop
  74         if (empty($url) || parse_url($url, PHP_URL_QUERY) === $_SERVER['QUERY_STRING']) {
  75             $url = Tools::getPocheUrl();
  76         }
  77
  78         if (substr($url, 0, 1) !== '?') {
  79             $ref = Tools::getPocheUrl();
  80             if (substr($url, 0, strlen($ref)) !== $ref) {
  81                 $url = $ref;
  82             }
  83         }
  84         self::logm('redirect to ' . $url);
  85         header('Location: '.$url);
  86         exit();
  87     }
  88
  89     public static function getTplFile($view)
  90     {
  91         $default_tpl = 'home.twig';
  92
  93         switch ($view) {
  94             case 'install':
  95                 $tpl_file = 'install.twig';
  96                 break;
  97             case 'import';
  98                 $tpl_file = 'import.twig';
  99                 break;
 100             case 'export':
 101                 $tpl_file = 'export.twig';
 102                 break;
 103             case 'config':
 104                 $tpl_file = 'config.twig';
 105                 break;
 106             case 'tags':
 107                 $tpl_file = 'tags.twig';
 108                 break;
 109             case 'edit-tags':
 110                 $tpl_file = 'edit-tags.twig';
 111                 break;
 112             case 'view':
 113                 $tpl_file = 'view.twig';
 114                 break;
 115             case 'login':
 116                 $tpl_file = 'login.twig';
 117                 break;
 118             case 'error':
 119                 $tpl_file = 'error.twig';
 120                 break;
 121
 122             default:
 123                 $tpl_file = $default_tpl;
 124                 break;
 125         }
 126
 127         return $tpl_file;
 128     }
 129
 130     public static function getFile($url)
 131     {
 132         $timeout = 15;
 133         $useragent = "Mozilla/5.0 (Windows NT 5.1; rv:18.0) Gecko/20100101 Firefox/18.0";
 134
 135         if (in_array ('curl', get_loaded_extensions())) {
 136             # Fetch feed from URL
 137             $curl = curl_init();
 138             curl_setopt($curl, CURLOPT_URL, $url);
 139             curl_setopt($curl, CURLOPT_TIMEOUT, $timeout);
 140             if (!ini_get('open_basedir') && !ini_get('safe_mode')) {
 141                 curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true);
 142             }
 143             curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
 144             curl_setopt($curl, CURLOPT_HEADER, false);
 145
 146             # for ssl, do not verified certificate
 147             curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
 148             curl_setopt($curl, CURLOPT_AUTOREFERER, TRUE );
 149
 150             # FeedBurner requires a proper USER-AGENT...
 151             curl_setopt($curl, CURL_HTTP_VERSION_1_1, true);
 152             curl_setopt($curl, CURLOPT_ENCODING, "gzip, deflate");
 153             curl_setopt($curl, CURLOPT_USERAGENT, $useragent);
 154
 155             $data = curl_exec($curl);
 156             $httpcode = curl_getinfo($curl, CURLINFO_HTTP_CODE);
 157             $httpcodeOK = isset($httpcode) and ($httpcode == 200 or $httpcode == 301);
 158             curl_close($curl);
 159         } else {
 160             # create http context and add timeout and user-agent
 161             $context = stream_context_create(
 162                 array(
 163                     'http' => array(
 164                         'timeout' => $timeout,
 165                         'header' => "User-Agent: " . $useragent,
 166                         'follow_location' => true
 167                     ),
 168                     'ssl' => array(
 169                         'verify_peer' => false,
 170                         'allow_self_signed' => true
 171                     )
 172                 )
 173             );
 174
 175             # only download page lesser than 4MB
 176             $data = @file_get_contents($url, false, $context, -1, 4000000);
 177
 178             if (isset($http_response_header) and isset($http_response_header[0])) {
 179                 $httpcodeOK = isset($http_response_header) and isset($http_response_header[0]) and ((strpos($http_response_header[0], '200 OK') !== FALSE) or (strpos($http_response_header[0], '301 Moved Permanently') !== FALSE));
 180             }
 181         }
 182
 183         # if response is not empty and response is OK
 184         if (isset($data) and isset($httpcodeOK) and $httpcodeOK) {
 185
 186             # take charset of page and get it
 187             preg_match('#<meta .*charset=.*>#Usi', $data, $meta);
 188
 189             # if meta tag is found
 190             if (!empty($meta[0])) {
 191                 preg_match('#charset="?(.*)"#si', $meta[0], $encoding);
 192                 # if charset is found set it otherwise, set it to utf-8
 193                 $html_charset = (!empty($encoding[1])) ? strtolower($encoding[1]) : 'utf-8';
 194                 if (empty($encoding[1])) $encoding[1] = 'utf-8';
 195             } else {
 196                 $html_charset = 'utf-8';
 197                 $encoding[1] = '';
 198             }
 199
 200             # replace charset of url to charset of page
 201             $data = str_replace('charset=' . $encoding[1], 'charset=' . $html_charset, $data);
 202
 203             return $data;
 204         }
 205         else {
 206             return FALSE;
 207         }
 208     }
 209
 210     public static function renderJson($data)
 211     {
 212         header('Cache-Control: no-cache, must-revalidate');
 213         header('Expires: Sat, 26 Jul 1997 05:00:00 GMT');
 214         header('Content-type: application/json; charset=UTF-8');
 215         echo json_encode($data);
 216         exit();
 217     }
 218
 219     public static function logm($message)
 220     {
 221         if (DEBUG_POCHE) {
 222             $t = strval(date('Y/m/d_H:i:s')) . ' - ' . $_SERVER["REMOTE_ADDR"] . ' - ' . strval($message) . "\n";
 223             file_put_contents(CACHE . '/log.txt', $t, FILE_APPEND);
 224             error_log('DEBUG POCHE : ' . $message);
 225         }
 226     }
 227
 228     public static function encodeString($string)
 229     {
 230         return sha1($string . SALT);
 231     }
 232
 233     public static function checkVar($var, $default = '')
 234     {
 235         return ((isset ($_REQUEST["$var"])) ? htmlentities($_REQUEST["$var"]) : $default);
 236     }
 237
 238     public static function getDomain($url)
 239     {
 240       return parse_url($url, PHP_URL_HOST);
 241     }
 242
 243     public static function getReadingTime($text) {
 244         $word = str_word_count(strip_tags($text));
 245         $minutes = floor($word / 200);
 246         $seconds = floor($word % 200 / (200 / 60));
 247         $time = array('minutes' => $minutes, 'seconds' => $seconds);
 248
 249         return $minutes;
 250     }
 251
 252     public static function getDocLanguage($userlanguage) {
 253         $lang = explode('.', $userlanguage);
 254         return str_replace('_', '-', $lang[0]);
 255     }
 256 }