inc/poche/pocheCore.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 function encode_string($string)
  12 {
  13     return sha1($string . SALT);
  14 }
  15
  16 function get_external_file($url)
  17 {
  18     $timeout = 15;
  19     $useragent = "Mozilla/5.0 (Windows NT 5.1; rv:18.0) Gecko/20100101 Firefox/18.0";
  20
  21     if  (in_array ('curl', get_loaded_extensions())) {
  22         # Fetch feed from URL
  23         $curl = curl_init();
  24         curl_setopt($curl, CURLOPT_URL, $url);
  25         curl_setopt($curl, CURLOPT_TIMEOUT, $timeout);
  26         curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true);
  27         curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
  28         curl_setopt($curl, CURLOPT_HEADER, false);
  29
  30         # for ssl, do not verified certificate
  31         curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
  32         curl_setopt($curl, CURLOPT_AUTOREFERER, TRUE );
  33
  34         # FeedBurner requires a proper USER-AGENT...
  35         curl_setopt($curl, CURL_HTTP_VERSION_1_1, true);
  36         curl_setopt($curl, CURLOPT_ENCODING, "gzip, deflate");
  37         curl_setopt($curl, CURLOPT_USERAGENT, $useragent);
  38
  39         $data = curl_exec($curl);
  40         $httpcode = curl_getinfo($curl, CURLINFO_HTTP_CODE);
  41         $httpcodeOK = isset($httpcode) and ($httpcode == 200 or $httpcode == 301);
  42         curl_close($curl);
  43     } else {
  44         # create http context and add timeout and user-agent
  45         $context = stream_context_create(
  46             array(
  47                 'http' => array(
  48                     'timeout' => $timeout,
  49                     'header' => "User-Agent: " . $useragent,
  50                     'follow_location' => true
  51                 ),
  52                 'ssl' => array(
  53                     'verify_peer' => false,
  54                     'allow_self_signed' => true
  55                 )
  56             )
  57         );
  58
  59         # only download page lesser than 4MB
  60         $data = @file_get_contents($url, false, $context, -1, 4000000);
  61
  62         if (isset($http_response_header) and isset($http_response_header[0])) {
  63             $httpcodeOK = isset($http_response_header) and isset($http_response_header[0]) and ((strpos($http_response_header[0], '200 OK') !== FALSE) or (strpos($http_response_header[0], '301 Moved Permanently') !== FALSE));
  64         }
  65     }
  66
  67     # if response is not empty and response is OK
  68     if (isset($data) and isset($httpcodeOK) and $httpcodeOK) {
  69
  70         # take charset of page and get it
  71         preg_match('#<meta .*charset=.*>#Usi', $data, $meta);
  72
  73         # if meta tag is found
  74         if (!empty($meta[0])) {
  75             preg_match('#charset="?(.*)"#si', $meta[0], $encoding);
  76             # if charset is found set it otherwise, set it to utf-8
  77             $html_charset = (!empty($encoding[1])) ? strtolower($encoding[1]) : 'utf-8';
  78         } else {
  79             $html_charset = 'utf-8';
  80             $encoding[1] = '';
  81         }
  82
  83         # replace charset of url to charset of page
  84         $data = str_replace('charset=' . $encoding[1], 'charset=' . $html_charset, $data);
  85
  86         return $data;
  87     }
  88     else {
  89         return FALSE;
  90     }
  91 }
  92
  93 function fetch_url_content($url)
  94 {
  95     $url = base64_decode($url);
  96     if (pocheTool::isUrl($url)) {
  97         $url = pocheTool::cleanURL($url);
  98         $html = Encoding::toUTF8(get_external_file($url));
  99
 100         # if get_external_file if not able to retrieve HTTPS content, try the same URL with HTTP protocol
 101         if (!preg_match('!^https?://!i', $url) && (!isset($html) || strlen($html) <= 0)) {
 102             $url = 'http://' . $url;
 103             $html = Encoding::toUTF8(get_external_file($url));
 104         }
 105
 106         if (function_exists('tidy_parse_string')) {
 107             $tidy = tidy_parse_string($html, array(), 'UTF8');
 108             $tidy->cleanRepair();
 109             $html = $tidy->value;
 110         }
 111
 112         $parameters = array();
 113         if (isset($html) and strlen($html) > 0)
 114         {
 115             $readability = new Readability($html, $url);
 116             $readability->convertLinksToFootnotes = CONVERT_LINKS_FOOTNOTES;
 117             $readability->revertForcedParagraphElements = REVERT_FORCED_PARAGRAPH_ELEMENTS;
 118
 119             if($readability->init())
 120             {
 121                 $content = $readability->articleContent->innerHTML;
 122                 $parameters['title'] = $readability->articleTitle->innerHTML;
 123                 $parameters['content'] = $content;
 124
 125                 return $parameters;
 126             }
 127         }
 128     }
 129     else {
 130         #$msg->add('e', _('error during url preparation : the link is not valid'));
 131         pocheTool::logm($url . ' is not a valid url');
 132     }
 133
 134     return FALSE;
 135 }
 136
 137 function display_view($view, $id = 0, $full_head = 'yes')
 138 {
 139     global $tpl, $store;
 140
 141     switch ($view)
 142     {
 143         case 'install':
 144             pocheTool::logm('install mode');
 145             break;
 146         case 'import';
 147             pocheTool::logm('import mode');
 148             break;
 149         case 'export':
 150             $entries = $store->retrieveAll();
 151             $tpl->assign('export', pocheTool::renderJson($entries));
 152             $tpl->draw('export');
 153             pocheTool::logm('export view');
 154             break;
 155         case 'config':
 156             $tpl->assign('load_all_js', 0);
 157             $tpl->draw('head');
 158             $tpl->draw('home');
 159             $tpl->draw('config');
 160             $tpl->draw('js');
 161             $tpl->draw('footer');
 162             pocheTool::logm('config view');
 163             break;
 164         case 'view':
 165             $entry = $store->retrieveOneById($id);
 166             if ($entry != NULL) {
 167                 pocheTool::logm('view link #' . $id);
 168                 $tpl->assign('id', $entry['id']);
 169                 $tpl->assign('url', $entry['url']);
 170                 $tpl->assign('title', $entry['title']);
 171                 $content = $entry['content'];
 172                 if (function_exists('tidy_parse_string')) {
 173                     $tidy = tidy_parse_string($content, array('indent'=>true, 'show-body-only' => true), 'UTF8');
 174                     $tidy->cleanRepair();
 175                     $content = $tidy->value;
 176                 }
 177                 $tpl->assign('content', $content);
 178                 $tpl->assign('is_fav', $entry['is_fav']);
 179                 $tpl->assign('is_read', $entry['is_read']);
 180                 $tpl->assign('load_all_js', 0);
 181                 $tpl->draw('view');
 182             }
 183             else {
 184                 pocheTool::logm('error in view call : entry is NULL');
 185             }
 186             break;
 187         default: # home view
 188             $entries = $store->getEntriesByView($view);
 189             $tpl->assign('entries', $entries);
 190
 191             if ($full_head == 'yes') {
 192                 $tpl->assign('load_all_js', 1);
 193                 $tpl->draw('head');
 194                 $tpl->draw('home');
 195             }
 196
 197             $tpl->draw('entries');
 198             if ($full_head == 'yes') {
 199                 $tpl->draw('js');
 200                 $tpl->draw('footer');
 201             }
 202             break;
 203     }
 204 }
 205
 206 /**
 207  * Call action (mark as fav, archive, delete, etc.)
 208  */
 209 function action_to_do($action, $url, $id = 0)
 210 {
 211     global $store;
 212
 213     switch ($action)
 214     {
 215         case 'add':
 216             if($parametres_url = fetch_url_content($url)) {
 217                 if ($store->add($url, $parametres_url['title'], $parametres_url['content'])) {
 218                     pocheTool::logm('add link ' . $url);
 219                     $last_id = $store->getLastId();
 220                     if (DOWNLOAD_PICTURES) {
 221                         $content = filtre_picture($parametres_url['content'], $url, $last_id);
 222                     }
 223                     #$msg->add('s', _('the link has been added successfully'));
 224                 }
 225                 else {
 226                     #$msg->add('e', _('error during insertion : the link wasn\'t added'));
 227                     pocheTool::logm('error during insertion : the link wasn\'t added');
 228                 }
 229             }
 230             else {
 231                 #$msg->add('e', _('error during url preparation : the link wasn\'t added'));
 232                 pocheTool::logm('error during content fetch');
 233             }
 234             break;
 235         case 'delete':
 236             if ($store->deleteById($id)) {
 237                 if (DOWNLOAD_PICTURES) {
 238                     remove_directory(ABS_PATH . $id);
 239                 }
 240                 #$msg->add('s', _('the link has been deleted successfully'));
 241                 pocheTool::logm('delete link #' . $id);
 242             }
 243             else {
 244                 #$msg->add('e', _('the link wasn\'t deleted'));
 245                 pocheTool::logm('error : can\'t delete link #' . $id);
 246             }
 247             break;
 248         case 'toggle_fav' :
 249             $store->favoriteById($id);
 250             pocheTool::logm('mark as favorite link #' . $id);
 251             break;
 252         case 'toggle_archive' :
 253             $store->archiveById($id);
 254             pocheTool::logm('archive link #' . $id);
 255             break;
 256         default:
 257             break;
 258     }
 259 }