inc/functions.php

   1 <?php
   2
   3 /**
   4  * Permet de générer l'URL de poche pour le bookmarklet
   5  */
   6 function get_poche_url()
   7 {
   8     $protocol = "http";
   9     if(isset($_SERVER['HTTPS'])) {
  10         if($_SERVER['HTTPS'] != "off") {
  11             $protocol = "https";
  12         }
  13     }
  14
  15     return $protocol . "://" . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
  16 }
  17
  18 // function define to retrieve url content
  19 function get_external_file($url, $timeout)
  20 {
  21     // spoofing FireFox 18.0
  22     $useragent="Mozilla/5.0 (Windows NT 5.1; rv:18.0) Gecko/20100101 Firefox/18.0";
  23
  24     if  (in_array  ('curl', get_loaded_extensions())) {
  25         // Fetch feed from URL
  26         $curl = curl_init();
  27         curl_setopt($curl, CURLOPT_URL, $url);
  28         curl_setopt($curl, CURLOPT_TIMEOUT, $timeout);
  29         curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true);
  30         curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
  31         curl_setopt($curl, CURLOPT_HEADER, false);
  32
  33         // FeedBurner requires a proper USER-AGENT...
  34         curl_setopt($curl, CURL_HTTP_VERSION_1_1, true);
  35         curl_setopt($curl, CURLOPT_ENCODING, "gzip, deflate");
  36         curl_setopt($curl, CURLOPT_USERAGENT, $useragent);
  37
  38         $data = curl_exec($curl);
  39
  40         $httpcode = curl_getinfo($curl, CURLINFO_HTTP_CODE);
  41
  42         $httpcodeOK = isset($httpcode) and ($httpcode == 200 or $httpcode == 301);
  43
  44         curl_close($curl);
  45     } else {
  46
  47         // create http context and add timeout and user-agent
  48         $context = stream_context_create(array('http'=>array('timeout' => $timeout, // Timeout : time until we stop waiting for the response.
  49         'header'=> "User-Agent: ".$useragent, // spoot Mozilla Firefox
  50         'follow_location' => true
  51         )));
  52
  53         // only download page lesser than 4MB
  54         $data = @file_get_contents($url, false, $context, -1, 4000000); // We download at most 4 MB from source.
  55
  56         if(isset($http_response_header) and isset($http_response_header[0])) {
  57             $httpcodeOK = isset($http_response_header) and isset($http_response_header[0]) and ((strpos($http_response_header[0], '200 OK') !== FALSE) or (strpos($http_response_header[0], '301 Moved Permanently') !== FALSE));
  58         }
  59     }
  60
  61     // if response is not empty and response is OK
  62     if (isset($data) and isset($httpcodeOK) and $httpcodeOK ) {
  63
  64         // take charset of page and get it
  65         preg_match('#<meta .*charset=.*>#Usi', $data, $meta);
  66
  67         // if meta tag is found
  68         if (!empty($meta[0])) {
  69             // retrieve encoding in $enc
  70             preg_match('#charset="?(.*)"#si', $meta[0], $enc);
  71
  72             // if charset is found set it otherwise, set it to utf-8
  73             $html_charset = (!empty($enc[1])) ? strtolower($enc[1]) : 'utf-8';
  74
  75         } else {
  76             $html_charset = 'utf-8';
  77             $enc[1] = '';
  78         }
  79
  80         // replace charset of url to charset of page
  81         $data = str_replace('charset='.$enc[1], 'charset='.$html_charset, $data);
  82
  83         return $data;
  84     }
  85     else {
  86         return FALSE;
  87     }
  88 }
  89
  90 /**
  91  * Préparation de l'URL avec récupération du contenu avant insertion en base
  92  */
  93 function prepare_url($url)
  94 {
  95     $parametres = array();
  96     $url    = html_entity_decode(trim($url));
  97
  98     // We remove the annoying parameters added by FeedBurner and GoogleFeedProxy (?utm_source=...)
  99     // from shaarli, by sebsauvage
 100     $i=strpos($url,'&utm_source='); if ($i!==false) $url=substr($url,0,$i);
 101     $i=strpos($url,'?utm_source='); if ($i!==false) $url=substr($url,0,$i);
 102     $i=strpos($url,'#xtor=RSS-'); if ($i!==false) $url=substr($url,0,$i);
 103
 104     $title  = $url;
 105     if (!preg_match('!^https?://!i', $url))
 106         $url = 'http://' . $url;
 107
 108     $html = Encoding::toUTF8(get_external_file($url,15));
 109     if (isset($html) and strlen($html) > 0)
 110     {
 111         $r = new Readability($html, $url);
 112         if($r->init())
 113         {
 114             $title = $r->articleTitle->innerHTML;
 115         }
 116     }
 117
 118     $parametres['title']    = $title;
 119     $parametres['content']  = $r->articleContent->innerHTML;
 120
 121     return $parametres;
 122 }
 123
 124 /**
 125  * Appel d'une action (mark as fav, archive, delete)
 126  */
 127 function action_to_do($action, $id, $url, $token)
 128 {
 129     global $db;
 130
 131     switch ($action)
 132     {
 133         case 'add':
 134             if ($url == '')
 135                 continue;
 136
 137             $parametres_url = prepare_url($url);
 138             $sql_action     = 'INSERT INTO entries ( url, title, content ) VALUES (?, ?, ?)';
 139             $params_action  = array($url, $parametres_url['title'], $parametres_url['content']);
 140             break;
 141         case 'delete':
 142             if (verif_token($token)) {
 143                 $sql_action     = "DELETE FROM entries WHERE id=?";
 144                 $params_action  = array($id);
 145             }
 146             else logm('csrf problem while deleting entry');
 147             break;
 148         case 'toggle_fav' :
 149             if (verif_token($token)) {
 150                 $sql_action     = "UPDATE entries SET is_fav=~is_fav WHERE id=?";
 151                 $params_action  = array($id);
 152             }
 153             else logm('csrf problem while fav entry');
 154             break;
 155         case 'toggle_archive' :
 156             if (verif_token($token)) {
 157                 $sql_action     = "UPDATE entries SET is_read=~is_read WHERE id=?";
 158                 $params_action  = array($id);
 159             }
 160             else logm('csrf problem while archive entry');
 161             break;
 162         default:
 163             break;
 164     }
 165
 166     try
 167     {
 168         # action query
 169         if (isset($sql_action))
 170         {
 171             $query = $db->getHandle()->prepare($sql_action);
 172             $query->execute($params_action);
 173         }
 174     }
 175     catch (Exception $e)
 176     {
 177         logm('action query error : '.$e->getMessage());
 178     }
 179 }
 180
 181 /**
 182  * Détermine quels liens afficher : home, fav ou archives
 183  */
 184 function display_view($view)
 185 {
 186     global $db;
 187
 188     switch ($_SESSION['sort'])
 189     {
 190         case 'ia':
 191             $order = 'ORDER BY id';
 192             break;
 193         case 'id':
 194             $order = 'ORDER BY id DESC';
 195             break;
 196         case 'ta':
 197             $order = 'ORDER BY lower(title)';
 198             break;
 199         case 'td':
 200             $order = 'ORDER BY lower(title) DESC';
 201             break;
 202         default:
 203             $order = 'ORDER BY id';
 204             break;
 205     }
 206
 207     switch ($view)
 208     {
 209         case 'archive':
 210             $sql    = "SELECT * FROM entries WHERE is_read=? " . $order;
 211             $params = array(-1);
 212             break;
 213         case 'fav' :
 214             $sql    = "SELECT * FROM entries WHERE is_fav=? " . $order;
 215             $params = array(-1);
 216             break;
 217         default:
 218             $sql    = "SELECT * FROM entries WHERE is_read=? " . $order;
 219             $params = array(0);
 220             break;
 221     }
 222
 223     # view query
 224     try
 225     {
 226         $query  = $db->getHandle()->prepare($sql);
 227         $query->execute($params);
 228         $entries = $query->fetchAll();
 229     }
 230     catch (Exception $e)
 231     {
 232         logm('view query error : '.$e->getMessage());
 233     }
 234
 235     return $entries;
 236 }
 237
 238 /**
 239  * Récupère un article en fonction d'un ID
 240  */
 241 function get_article($id)
 242 {
 243     global $db;
 244
 245     $entry  = NULL;
 246     $sql    = "SELECT * FROM entries WHERE id=?";
 247     $params = array(intval($id));
 248
 249     # view article query
 250     try
 251     {
 252         $query  = $db->getHandle()->prepare($sql);
 253         $query->execute($params);
 254         $entry = $query->fetchAll();
 255     }
 256     catch (Exception $e)
 257     {
 258         logm('get article query error : '.$e->getMessage());
 259     }
 260
 261     return $entry;
 262 }
 263
 264 /**
 265  * Vérifie si le jeton passé en $_POST correspond à celui en session
 266  */
 267 function verif_token($token)
 268 {
 269     if(isset($_SESSION['token_poche']) && isset($_SESSION['token_time_poche']) && isset($token))
 270     {
 271         if($_SESSION['token_poche'] == $token)
 272         {
 273             $old_timestamp = time() - (15*60);
 274             if($_SESSION['token_time_poche'] >= $old_timestamp)
 275             {
 276                 return TRUE;
 277             }
 278             else {
 279                 session_destroy();
 280                 logm('session expired');
 281             }
 282         }
 283         else {
 284             logm('token error : the token is different');
 285             return FALSE;
 286         }
 287     }
 288     else {
 289         logm('token error : the token is not here');
 290         return FALSE;
 291     }
 292 }
 293
 294 function logm($message)
 295 {
 296     $t = strval(date('Y/m/d_H:i:s')).' - '.$_SERVER["REMOTE_ADDR"].' - '.strval($message)."\n";
 297     file_put_contents($GLOBALS['config']['DATADIR'].'/log.txt',$t,FILE_APPEND);
 298 }