index.php

   1 <?php
   2 /**
   3  * Shaarli v0.6.3 - Shaare your links...
   4  *
   5  * The personal, minimalist, super-fast, no-database Delicious clone.
   6  *
   7  * Friendly fork by the Shaarli community:
   8  *  - https://github.com/shaarli/Shaarli
   9  *
  10  * Original project by sebsauvage.net:
  11  *  - http://sebsauvage.net/wiki/doku.php?id=php:shaarli
  12  *  - https://github.com/sebsauvage/Shaarli
  13  *
  14  * Licence: http://www.opensource.org/licenses/zlib-license.php
  15  *
  16  * Requires: PHP 5.3.x
  17  */
  18
  19 // Set 'UTC' as the default timezone if it is not defined in php.ini
  20 // See http://php.net/manual/en/datetime.configuration.php#ini.date.timezone
  21 if (date_default_timezone_get() == '') {
  22     date_default_timezone_set('UTC');
  23 }
  24
  25 /* -----------------------------------------------------------------------------
  26  * Hardcoded parameters
  27  * You should not touch any code below (or at your own risks!)
  28  * (These parameters can be overwritten by editing the file /data/config.php)
  29  * -----------------------------------------------------------------------------
  30  */
  31
  32 /*
  33  * Shaarli directories & configuration files
  34  */
  35 // Data subdirectory
  36 $GLOBALS['config']['DATADIR'] = 'data';
  37
  38 // Main configuration file
  39 $GLOBALS['config']['CONFIG_FILE'] = $GLOBALS['config']['DATADIR'].'/config.php';
  40
  41 // Link datastore
  42 $GLOBALS['config']['DATASTORE'] = $GLOBALS['config']['DATADIR'].'/datastore.php';
  43
  44 // Banned IPs
  45 $GLOBALS['config']['IPBANS_FILENAME'] = $GLOBALS['config']['DATADIR'].'/ipbans.php';
  46
  47 // Processed updates file.
  48 $GLOBALS['config']['UPDATES_FILE'] = $GLOBALS['config']['DATADIR'].'/updates.txt';
  49
  50 // Access log
  51 $GLOBALS['config']['LOG_FILE'] = $GLOBALS['config']['DATADIR'].'/log.txt';
  52
  53 // For updates check of Shaarli
  54 $GLOBALS['config']['UPDATECHECK_FILENAME'] = $GLOBALS['config']['DATADIR'].'/lastupdatecheck.txt';
  55
  56 // Set ENABLE_UPDATECHECK to disabled by default.
  57 $GLOBALS['config']['ENABLE_UPDATECHECK'] = false;
  58
  59 // RainTPL cache directory (keep the trailing slash!)
  60 $GLOBALS['config']['RAINTPL_TMP'] = 'tmp/';
  61 // Raintpl template directory (keep the trailing slash!)
  62 $GLOBALS['config']['RAINTPL_TPL'] = 'tpl/';
  63
  64 // Thumbnail cache directory
  65 $GLOBALS['config']['CACHEDIR'] = 'cache';
  66
  67 // Atom & RSS feed cache directory
  68 $GLOBALS['config']['PAGECACHE'] = 'pagecache';
  69
  70 /*
  71  * Global configuration
  72  */
  73 // Ban IP after this many failures
  74 $GLOBALS['config']['BAN_AFTER'] = 4;
  75 // Ban duration for IP address after login failures (in seconds)
  76 $GLOBALS['config']['BAN_DURATION'] = 1800;
  77
  78 // Feed options
  79 // Enable RSS permalinks by default.
  80 // This corresponds to the default behavior of shaarli before this was added as an option.
  81 $GLOBALS['config']['ENABLE_RSS_PERMALINKS'] = true;
  82 // If true, an extra "ATOM feed" button will be displayed in the toolbar
  83 $GLOBALS['config']['SHOW_ATOM'] = false;
  84
  85 // Link display options
  86 $GLOBALS['config']['HIDE_PUBLIC_LINKS'] = false;
  87 $GLOBALS['config']['HIDE_TIMESTAMPS'] = false;
  88 $GLOBALS['config']['LINKS_PER_PAGE'] = 20;
  89
  90 // Open Shaarli (true): anyone can add/edit/delete links without having to login
  91 $GLOBALS['config']['OPEN_SHAARLI'] = false;
  92
  93 // Thumbnails
  94 // Display thumbnails in links
  95 $GLOBALS['config']['ENABLE_THUMBNAILS'] = true;
  96 // Store thumbnails in a local cache
  97 $GLOBALS['config']['ENABLE_LOCALCACHE'] = true;
  98
  99 // Update check frequency for Shaarli. 86400 seconds=24 hours
 100 $GLOBALS['config']['UPDATECHECK_BRANCH'] = 'stable';
 101 $GLOBALS['config']['UPDATECHECK_INTERVAL'] = 86400;
 102
 103
 104 /*
 105  * Plugin configuration
 106  *
 107  * Warning: order matters!
 108  *
 109  * These settings may be be overriden in:
 110  *  - data/config.php
 111  *  - each plugin's configuration file
 112  */
 113 //$GLOBALS['config']['ENABLED_PLUGINS'] = array(
 114 //    'qrcode', 'archiveorg', 'readityourself', 'demo_plugin', 'playvideos',
 115 //    'wallabag', 'markdown', 'addlink_toolbar',
 116 //);
 117 $GLOBALS['config']['ENABLED_PLUGINS'] = array('qrcode');
 118
 119 // Initialize plugin parameters array.
 120 $GLOBALS['plugins'] = array();
 121
 122 // PubSubHubbub support. Put an empty string to disable, or put your hub url here to enable.
 123 $GLOBALS['config']['PUBSUBHUB_URL'] = '';
 124
 125 /*
 126  * PHP configuration
 127  */
 128 define('shaarli_version', '0.6.3');
 129
 130 // http://server.com/x/shaarli --> /shaarli/
 131 define('WEB_PATH', substr($_SERVER["REQUEST_URI"], 0, 1+strrpos($_SERVER["REQUEST_URI"], '/', 0)));
 132
 133 // High execution time in case of problematic imports/exports.
 134 ini_set('max_input_time','60');
 135
 136 // Try to set max upload file size and read
 137 ini_set('memory_limit', '128M');
 138 ini_set('post_max_size', '16M');
 139 ini_set('upload_max_filesize', '16M');
 140
 141 // See all error except warnings
 142 error_reporting(E_ALL^E_WARNING);
 143 // See all errors (for debugging only)
 144 //error_reporting(-1);
 145
 146 /*
 147  * User configuration
 148  */
 149 if (is_file($GLOBALS['config']['CONFIG_FILE'])) {
 150     require_once $GLOBALS['config']['CONFIG_FILE'];
 151 }
 152
 153 // Shaarli library
 154 require_once 'application/ApplicationUtils.php';
 155 require_once 'application/Cache.php';
 156 require_once 'application/CachedPage.php';
 157 require_once 'application/FileUtils.php';
 158 require_once 'application/HttpUtils.php';
 159 require_once 'application/LinkDB.php';
 160 require_once 'application/LinkFilter.php';
 161 require_once 'application/LinkUtils.php';
 162 require_once 'application/TimeZone.php';
 163 require_once 'application/Url.php';
 164 require_once 'application/Utils.php';
 165 require_once 'application/Config.php';
 166 require_once 'application/PluginManager.php';
 167 require_once 'application/Router.php';
 168 require_once 'application/Updater.php';
 169
 170 // Ensure the PHP version is supported
 171 try {
 172     ApplicationUtils::checkPHPVersion('5.3', PHP_VERSION);
 173 } catch(Exception $exc) {
 174     header('Content-Type: text/plain; charset=utf-8');
 175     echo $exc->getMessage();
 176     exit;
 177 }
 178
 179 // Force cookie path (but do not change lifetime)
 180 $cookie = session_get_cookie_params();
 181 $cookiedir = '';
 182 if (dirname($_SERVER['SCRIPT_NAME']) != '/') {
 183     $cookiedir = dirname($_SERVER["SCRIPT_NAME"]).'/';
 184 }
 185 // Set default cookie expiration and path.
 186 session_set_cookie_params($cookie['lifetime'], $cookiedir, $_SERVER['SERVER_NAME']);
 187 // Set session parameters on server side.
 188 // If the user does not access any page within this time, his/her session is considered expired.
 189 define('INACTIVITY_TIMEOUT', 3600); // in seconds.
 190 // Use cookies to store session.
 191 ini_set('session.use_cookies', 1);
 192 // Force cookies for session (phpsessionID forbidden in URL).
 193 ini_set('session.use_only_cookies', 1);
 194 // Prevent PHP form using sessionID in URL if cookies are disabled.
 195 ini_set('session.use_trans_sid', false);
 196
 197 session_name('shaarli');
 198 // Start session if needed (Some server auto-start sessions).
 199 if (session_id() == '') {
 200     session_start();
 201 }
 202
 203 // Regenerate session ID if invalid or not defined in cookie.
 204 if (isset($_COOKIE['shaarli']) && !is_session_id_valid($_COOKIE['shaarli'])) {
 205     session_regenerate_id(true);
 206     $_COOKIE['shaarli'] = session_id();
 207 }
 208
 209 include "inc/rain.tpl.class.php"; //include Rain TPL
 210 raintpl::$tpl_dir = $GLOBALS['config']['RAINTPL_TPL']; // template directory
 211 raintpl::$cache_dir = $GLOBALS['config']['RAINTPL_TMP']; // cache directory
 212
 213 $pluginManager = PluginManager::getInstance();
 214 $pluginManager->load($GLOBALS['config']['ENABLED_PLUGINS']);
 215
 216 ob_start();  // Output buffering for the page cache.
 217
 218
 219 // In case stupid admin has left magic_quotes enabled in php.ini:
 220 if (get_magic_quotes_gpc())
 221 {
 222     function stripslashes_deep($value) { $value = is_array($value) ? array_map('stripslashes_deep', $value) : stripslashes($value); return $value; }
 223     $_POST = array_map('stripslashes_deep', $_POST);
 224     $_GET = array_map('stripslashes_deep', $_GET);
 225     $_COOKIE = array_map('stripslashes_deep', $_COOKIE);
 226 }
 227
 228 // Prevent caching on client side or proxy: (yes, it's ugly)
 229 header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
 230 header("Cache-Control: no-store, no-cache, must-revalidate");
 231 header("Cache-Control: post-check=0, pre-check=0", false);
 232 header("Pragma: no-cache");
 233
 234 // Handling of old config file which do not have the new parameters.
 235 if (empty($GLOBALS['title'])) $GLOBALS['title']='Shared links on '.escape(index_url($_SERVER));
 236 if (empty($GLOBALS['timezone'])) $GLOBALS['timezone']=date_default_timezone_get();
 237 if (empty($GLOBALS['redirector'])) $GLOBALS['redirector']='';
 238 if (empty($GLOBALS['disablesessionprotection'])) $GLOBALS['disablesessionprotection']=false;
 239 if (empty($GLOBALS['privateLinkByDefault'])) $GLOBALS['privateLinkByDefault']=false;
 240 if (empty($GLOBALS['titleLink'])) $GLOBALS['titleLink']='?';
 241 // I really need to rewrite Shaarli with a proper configuation manager.
 242
 243 if (! is_file($GLOBALS['config']['CONFIG_FILE'])) {
 244     // Ensure Shaarli has proper access to its resources
 245     $errors = ApplicationUtils::checkResourcePermissions($GLOBALS['config']);
 246
 247     if ($errors != array()) {
 248         $message = '<p>Insufficient permissions:</p><ul>';
 249
 250         foreach ($errors as $error) {
 251             $message .= '<li>'.$error.'</li>';
 252         }
 253         $message .= '</ul>';
 254
 255         header('Content-Type: text/html; charset=utf-8');
 256         echo $message;
 257         exit;
 258     }
 259
 260     // Display the installation form if no existing config is found
 261     install();
 262 }
 263
 264 $GLOBALS['title'] = !empty($GLOBALS['title']) ? escape($GLOBALS['title']) : '';
 265 $GLOBALS['titleLink'] = !empty($GLOBALS['titleLink']) ? escape($GLOBALS['titleLink']) : '';
 266 $GLOBALS['redirector'] = !empty($GLOBALS['redirector']) ? escape($GLOBALS['redirector']) : '';
 267
 268 // a token depending of deployment salt, user password, and the current ip
 269 define('STAY_SIGNED_IN_TOKEN', sha1($GLOBALS['hash'].$_SERVER["REMOTE_ADDR"].$GLOBALS['salt']));
 270
 271 autoLocale(); // Sniff browser language and set date format accordingly.
 272 header('Content-Type: text/html; charset=utf-8'); // We use UTF-8 for proper international characters handling.
 273
 274 //==================================================================================================
 275 // Checking session state (i.e. is the user still logged in)
 276 //==================================================================================================
 277
 278 function setup_login_state() {
 279         if ($GLOBALS['config']['OPEN_SHAARLI']) {
 280             return true;
 281         }
 282         $userIsLoggedIn = false; // By default, we do not consider the user as logged in;
 283         $loginFailure = false; // If set to true, every attempt to authenticate the user will fail. This indicates that an important condition isn't met.
 284         if (!isset($GLOBALS['login'])) {
 285             $userIsLoggedIn = false;  // Shaarli is not configured yet.
 286             $loginFailure = true;
 287         }
 288         if (isset($_COOKIE['shaarli_staySignedIn']) &&
 289             $_COOKIE['shaarli_staySignedIn']===STAY_SIGNED_IN_TOKEN &&
 290             !$loginFailure)
 291         {
 292             fillSessionInfo();
 293             $userIsLoggedIn = true;
 294         }
 295         // If session does not exist on server side, or IP address has changed, or session has expired, logout.
 296         if (empty($_SESSION['uid']) ||
 297             ($GLOBALS['disablesessionprotection']==false && $_SESSION['ip']!=allIPs()) ||
 298             time() >= $_SESSION['expires_on'])
 299         {
 300             logout();
 301             $userIsLoggedIn = false;
 302             $loginFailure = true;
 303         }
 304         if (!empty($_SESSION['longlastingsession'])) {
 305             $_SESSION['expires_on']=time()+$_SESSION['longlastingsession']; // In case of "Stay signed in" checked.
 306         }
 307         else {
 308             $_SESSION['expires_on']=time()+INACTIVITY_TIMEOUT; // Standard session expiration date.
 309         }
 310         if (!$loginFailure) {
 311             $userIsLoggedIn = true;
 312         }
 313
 314         return $userIsLoggedIn;
 315 }
 316 $userIsLoggedIn = setup_login_state();
 317
 318
 319 // ------------------------------------------------------------------------------------------
 320 // Sniff browser language to display dates in the right format automatically.
 321 // (Note that is may not work on your server if the corresponding local is not installed.)
 322 function autoLocale()
 323 {
 324     $attempts = array('en_US'); // Default if browser does not send HTTP_ACCEPT_LANGUAGE
 325     if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) // e.g. "fr,fr-fr;q=0.8,en;q=0.5,en-us;q=0.3"
 326     {   // (It's a bit crude, but it works very well. Preferred language is always presented first.)
 327         if (preg_match('/([a-z]{2})-?([a-z]{2})?/i',$_SERVER['HTTP_ACCEPT_LANGUAGE'],$matches)) {
 328             $loc = $matches[1] . (!empty($matches[2]) ? '_' . strtoupper($matches[2]) : '');
 329             $attempts = array($loc.'.UTF-8', $loc, str_replace('_', '-', $loc).'.UTF-8', str_replace('_', '-', $loc),
 330                 $loc . '_' . strtoupper($loc).'.UTF-8', $loc . '_' . strtoupper($loc),
 331                 $loc . '_' . $loc.'.UTF-8', $loc . '_' . $loc, $loc . '-' . strtoupper($loc).'.UTF-8',
 332                 $loc . '-' . strtoupper($loc), $loc . '-' . $loc.'.UTF-8', $loc . '-' . $loc);
 333         }
 334     }
 335     setlocale(LC_TIME, $attempts);  // LC_TIME = Set local for date/time format only.
 336 }
 337
 338 // ------------------------------------------------------------------------------------------
 339 // PubSubHubbub protocol support (if enabled)  [UNTESTED]
 340 // (Source: http://aldarone.fr/les-flux-rss-shaarli-et-pubsubhubbub/ )
 341 if (!empty($GLOBALS['config']['PUBSUBHUB_URL'])) include './publisher.php';
 342 function pubsubhub()
 343 {
 344     if (!empty($GLOBALS['config']['PUBSUBHUB_URL']))
 345     {
 346        $p = new Publisher($GLOBALS['config']['PUBSUBHUB_URL']);
 347        $topic_url = array (
 348                        index_url($_SERVER).'?do=atom',
 349                        index_url($_SERVER).'?do=rss'
 350                     );
 351        $p->publish_update($topic_url);
 352     }
 353 }
 354
 355 // ------------------------------------------------------------------------------------------
 356 // Session management
 357
 358 // Returns the IP address of the client (Used to prevent session cookie hijacking.)
 359 function allIPs()
 360 {
 361     $ip = $_SERVER["REMOTE_ADDR"];
 362     // Then we use more HTTP headers to prevent session hijacking from users behind the same proxy.
 363     if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) { $ip=$ip.'_'.$_SERVER['HTTP_X_FORWARDED_FOR']; }
 364     if (isset($_SERVER['HTTP_CLIENT_IP'])) { $ip=$ip.'_'.$_SERVER['HTTP_CLIENT_IP']; }
 365     return $ip;
 366 }
 367
 368 function fillSessionInfo() {
 369         $_SESSION['uid'] = sha1(uniqid('',true).'_'.mt_rand()); // Generate unique random number (different than phpsessionid)
 370         $_SESSION['ip']=allIPs();                // We store IP address(es) of the client to make sure session is not hijacked.
 371         $_SESSION['username']=$GLOBALS['login'];
 372         $_SESSION['expires_on']=time()+INACTIVITY_TIMEOUT;  // Set session expiration.
 373 }
 374
 375 // Check that user/password is correct.
 376 function check_auth($login,$password)
 377 {
 378     $hash = sha1($password.$login.$GLOBALS['salt']);
 379     if ($login==$GLOBALS['login'] && $hash==$GLOBALS['hash'])
 380     {   // Login/password is correct.
 381                 fillSessionInfo();
 382         logm($GLOBALS['config']['LOG_FILE'], $_SERVER['REMOTE_ADDR'], 'Login successful');
 383         return True;
 384     }
 385     logm($GLOBALS['config']['LOG_FILE'], $_SERVER['REMOTE_ADDR'], 'Login failed for user '.$login);
 386     return False;
 387 }
 388
 389 // Returns true if the user is logged in.
 390 function isLoggedIn()
 391 {
 392     global $userIsLoggedIn;
 393     return $userIsLoggedIn;
 394 }
 395
 396 // Force logout.
 397 function logout() {
 398     if (isset($_SESSION)) {
 399         unset($_SESSION['uid']);
 400         unset($_SESSION['ip']);
 401         unset($_SESSION['username']);
 402         unset($_SESSION['privateonly']);
 403     }
 404     setcookie('shaarli_staySignedIn', FALSE, 0, WEB_PATH);
 405 }
 406
 407
 408 // ------------------------------------------------------------------------------------------
 409 // Brute force protection system
 410 // Several consecutive failed logins will ban the IP address for 30 minutes.
 411 if (!is_file($GLOBALS['config']['IPBANS_FILENAME'])) file_put_contents($GLOBALS['config']['IPBANS_FILENAME'], "<?php\n\$GLOBALS['IPBANS']=".var_export(array('FAILURES'=>array(),'BANS'=>array()),true).";\n?>");
 412 include $GLOBALS['config']['IPBANS_FILENAME'];
 413 // Signal a failed login. Will ban the IP if too many failures:
 414 function ban_loginFailed()
 415 {
 416     $ip=$_SERVER["REMOTE_ADDR"]; $gb=$GLOBALS['IPBANS'];
 417     if (!isset($gb['FAILURES'][$ip])) $gb['FAILURES'][$ip]=0;
 418     $gb['FAILURES'][$ip]++;
 419     if ($gb['FAILURES'][$ip]>($GLOBALS['config']['BAN_AFTER']-1))
 420     {
 421         $gb['BANS'][$ip]=time()+$GLOBALS['config']['BAN_DURATION'];
 422         logm($GLOBALS['config']['LOG_FILE'], $_SERVER['REMOTE_ADDR'], 'IP address banned from login');
 423     }
 424     $GLOBALS['IPBANS'] = $gb;
 425     file_put_contents($GLOBALS['config']['IPBANS_FILENAME'], "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>");
 426 }
 427
 428 // Signals a successful login. Resets failed login counter.
 429 function ban_loginOk()
 430 {
 431     $ip=$_SERVER["REMOTE_ADDR"]; $gb=$GLOBALS['IPBANS'];
 432     unset($gb['FAILURES'][$ip]); unset($gb['BANS'][$ip]);
 433     $GLOBALS['IPBANS'] = $gb;
 434     file_put_contents($GLOBALS['config']['IPBANS_FILENAME'], "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>");
 435 }
 436
 437 // Checks if the user CAN login. If 'true', the user can try to login.
 438 function ban_canLogin()
 439 {
 440     $ip=$_SERVER["REMOTE_ADDR"]; $gb=$GLOBALS['IPBANS'];
 441     if (isset($gb['BANS'][$ip]))
 442     {
 443         // User is banned. Check if the ban has expired:
 444         if ($gb['BANS'][$ip]<=time())
 445         {   // Ban expired, user can try to login again.
 446             logm($GLOBALS['config']['LOG_FILE'], $_SERVER['REMOTE_ADDR'], 'Ban lifted.');
 447             unset($gb['FAILURES'][$ip]); unset($gb['BANS'][$ip]);
 448             file_put_contents($GLOBALS['config']['IPBANS_FILENAME'], "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>");
 449             return true; // Ban has expired, user can login.
 450         }
 451         return false; // User is banned.
 452     }
 453     return true; // User is not banned.
 454 }
 455
 456 // ------------------------------------------------------------------------------------------
 457 // Process login form: Check if login/password is correct.
 458 if (isset($_POST['login']))
 459 {
 460     if (!ban_canLogin()) die('I said: NO. You are banned for the moment. Go away.');
 461     if (isset($_POST['password']) && tokenOk($_POST['token']) && (check_auth($_POST['login'], $_POST['password'])))
 462     {   // Login/password is OK.
 463         ban_loginOk();
 464         // If user wants to keep the session cookie even after the browser closes:
 465         if (!empty($_POST['longlastingsession']))
 466         {
 467                         setcookie('shaarli_staySignedIn', STAY_SIGNED_IN_TOKEN, time()+31536000, WEB_PATH);
 468             $_SESSION['longlastingsession']=31536000;  // (31536000 seconds = 1 year)
 469             $_SESSION['expires_on']=time()+$_SESSION['longlastingsession'];  // Set session expiration on server-side.
 470
 471             $cookiedir = ''; if(dirname($_SERVER['SCRIPT_NAME'])!='/') $cookiedir=dirname($_SERVER["SCRIPT_NAME"]).'/';
 472             session_set_cookie_params($_SESSION['longlastingsession'],$cookiedir,$_SERVER['SERVER_NAME']); // Set session cookie expiration on client side
 473             // Note: Never forget the trailing slash on the cookie path!
 474             session_regenerate_id(true);  // Send cookie with new expiration date to browser.
 475         }
 476         else // Standard session expiration (=when browser closes)
 477         {
 478             $cookiedir = ''; if(dirname($_SERVER['SCRIPT_NAME'])!='/') $cookiedir=dirname($_SERVER["SCRIPT_NAME"]).'/';
 479             session_set_cookie_params(0,$cookiedir,$_SERVER['SERVER_NAME']); // 0 means "When browser closes"
 480             session_regenerate_id(true);
 481         }
 482
 483         // Optional redirect after login:
 484         if (isset($_GET['post'])) {
 485             $uri = '?post='. urlencode($_GET['post']);
 486             foreach (array('description', 'source', 'title') as $param) {
 487                 if (!empty($_GET[$param])) {
 488                     $uri .= '&'.$param.'='.urlencode($_GET[$param]);
 489                 }
 490             }
 491             header('Location: '. $uri);
 492             exit;
 493         }
 494
 495         if (isset($_GET['edit_link'])) {
 496             header('Location: ?edit_link='. escape($_GET['edit_link']));
 497             exit;
 498         }
 499
 500         if (isset($_POST['returnurl'])) {
 501             // Prevent loops over login screen.
 502             if (strpos($_POST['returnurl'], 'do=login') === false) {
 503                 header('Location: '. escape($_POST['returnurl']));
 504                 exit;
 505             }
 506         }
 507         header('Location: ?'); exit;
 508     }
 509     else
 510     {
 511         ban_loginFailed();
 512         $redir = '';
 513         if (isset($_GET['post'])) {
 514             $redir = '?post=' . urlencode($_GET['post']);
 515             foreach (array('description', 'source', 'title') as $param) {
 516                 if (!empty($_GET[$param])) {
 517                     $redir .= '&' . $param . '=' . urlencode($_GET[$param]);
 518                 }
 519             }
 520         }
 521         echo '<script>alert("Wrong login/password.");document.location=\'?do=login'.$redir.'\';</script>'; // Redirect to login screen.
 522         exit;
 523     }
 524 }
 525
 526 // ------------------------------------------------------------------------------------------
 527 // Misc utility functions:
 528
 529 // Convert post_max_size/upload_max_filesize (e.g. '16M') parameters to bytes.
 530 function return_bytes($val)
 531 {
 532     $val = trim($val); $last=strtolower($val[strlen($val)-1]);
 533     switch($last)
 534     {
 535         case 'g': $val *= 1024;
 536         case 'm': $val *= 1024;
 537         case 'k': $val *= 1024;
 538     }
 539     return $val;
 540 }
 541
 542 // Try to determine max file size for uploads (POST).
 543 // Returns an integer (in bytes)
 544 function getMaxFileSize()
 545 {
 546     $size1 = return_bytes(ini_get('post_max_size'));
 547     $size2 = return_bytes(ini_get('upload_max_filesize'));
 548     // Return the smaller of two:
 549     $maxsize = min($size1,$size2);
 550     // FIXME: Then convert back to readable notations ? (e.g. 2M instead of 2000000)
 551     return $maxsize;
 552 }
 553
 554 // ------------------------------------------------------------------------------------------
 555 // Token management for XSRF protection
 556 // Token should be used in any form which acts on data (create,update,delete,import...).
 557 if (!isset($_SESSION['tokens'])) $_SESSION['tokens']=array();  // Token are attached to the session.
 558
 559 // Returns a token.
 560 function getToken()
 561 {
 562     $rnd = sha1(uniqid('',true).'_'.mt_rand().$GLOBALS['salt']);  // We generate a random string.
 563     $_SESSION['tokens'][$rnd]=1;  // Store it on the server side.
 564     return $rnd;
 565 }
 566
 567 // Tells if a token is OK. Using this function will destroy the token.
 568 // true=token is OK.
 569 function tokenOk($token)
 570 {
 571     if (isset($_SESSION['tokens'][$token]))
 572     {
 573         unset($_SESSION['tokens'][$token]); // Token is used: destroy it.
 574         return true; // Token is OK.
 575     }
 576     return false; // Wrong token, or already used.
 577 }
 578
 579 // ------------------------------------------------------------------------------------------
 580 /* This class is in charge of building the final page.
 581    (This is basically a wrapper around RainTPL which pre-fills some fields.)
 582    p = new pageBuilder;
 583    p.assign('myfield','myvalue');
 584    p.renderPage('mytemplate');
 585
 586 */
 587 class pageBuilder
 588 {
 589     private $tpl; // RainTPL template
 590
 591     function __construct()
 592     {
 593         $this->tpl = false;
 594     }
 595
 596     /**
 597      * Initialize all default tpl tags.
 598      */
 599     private function initialize()
 600     {
 601         $this->tpl = new RainTPL;
 602
 603         try {
 604             $version = ApplicationUtils::checkUpdate(
 605                 shaarli_version,
 606                 $GLOBALS['config']['UPDATECHECK_FILENAME'],
 607                 $GLOBALS['config']['UPDATECHECK_INTERVAL'],
 608                 $GLOBALS['config']['ENABLE_UPDATECHECK'],
 609                 isLoggedIn(),
 610                 $GLOBALS['config']['UPDATECHECK_BRANCH']
 611             );
 612             $this->tpl->assign('newVersion', escape($version));
 613             $this->tpl->assign('versionError', '');
 614
 615         } catch (Exception $exc) {
 616             logm($GLOBALS['config']['LOG_FILE'], $_SERVER['REMOTE_ADDR'], $exc->getMessage());
 617             $this->tpl->assign('newVersion', '');
 618             $this->tpl->assign('versionError', escape($exc->getMessage()));
 619         }
 620
 621         $this->tpl->assign('feedurl', escape(index_url($_SERVER)));
 622         $searchcrits = ''; // Search criteria
 623         if (!empty($_GET['searchtags'])) {
 624             $searchcrits .= '&searchtags=' . urlencode($_GET['searchtags']);
 625         }
 626         elseif (!empty($_GET['searchterm'])) {
 627             $searchcrits .= '&searchterm=' . urlencode($_GET['searchterm']);
 628         }
 629         $this->tpl->assign('searchcrits', $searchcrits);
 630         $this->tpl->assign('source', index_url($_SERVER));
 631         $this->tpl->assign('version', shaarli_version);
 632         $this->tpl->assign('scripturl', index_url($_SERVER));
 633         $this->tpl->assign('pagetitle', 'Shaarli');
 634         $this->tpl->assign('privateonly', !empty($_SESSION['privateonly'])); // Show only private links?
 635         if (!empty($GLOBALS['title'])) {
 636             $this->tpl->assign('pagetitle', $GLOBALS['title']);
 637         }
 638         if (!empty($GLOBALS['titleLink'])) {
 639             $this->tpl->assign('titleLink', $GLOBALS['titleLink']);
 640         }
 641         if (!empty($GLOBALS['pagetitle'])) {
 642             $this->tpl->assign('pagetitle', $GLOBALS['pagetitle']);
 643         }
 644         $this->tpl->assign('shaarlititle', empty($GLOBALS['title']) ? 'Shaarli': $GLOBALS['title']);
 645         if (!empty($GLOBALS['plugin_errors'])) {
 646             $this->tpl->assign('plugin_errors', $GLOBALS['plugin_errors']);
 647         }
 648     }
 649
 650     // The following assign() method is basically the same as RainTPL (except that it's lazy)
 651     public function assign($what,$where)
 652     {
 653         if ($this->tpl===false) $this->initialize(); // Lazy initialization
 654         $this->tpl->assign($what,$where);
 655     }
 656
 657     // Render a specific page (using a template).
 658     // e.g. pb.renderPage('picwall')
 659     public function renderPage($page)
 660     {
 661         if ($this->tpl===false) $this->initialize(); // Lazy initialization
 662         $this->tpl->draw($page);
 663     }
 664
 665     /**
 666     * Render a 404 page (uses the template : tpl/404.tpl)
 667     *
 668     * usage : $PAGE->render404('The link was deleted')
 669     * @param string $message A messate to display what is not found
 670     */
 671     public function render404($message='The page you are trying to reach does not exist or has been deleted.') {
 672         header($_SERVER['SERVER_PROTOCOL'] . ' 404 Not Found');
 673         $this->tpl->assign('error_message', $message);
 674         $this->renderPage('404');
 675     }
 676 }
 677
 678 // ------------------------------------------------------------------------------------------
 679 // Output the last N links in RSS 2.0 format.
 680 function showRSS()
 681 {
 682     header('Content-Type: application/rss+xml; charset=utf-8');
 683
 684     // $usepermalink : If true, use permalink instead of final link.
 685     // User just has to add 'permalink' in URL parameters. e.g. http://mysite.com/shaarli/?do=rss&permalinks
 686     // Also enabled through a config option
 687     $usepermalinks = isset($_GET['permalinks']) || !$GLOBALS['config']['ENABLE_RSS_PERMALINKS'];
 688
 689     // Cache system
 690     $query = $_SERVER["QUERY_STRING"];
 691     $cache = new CachedPage(
 692         $GLOBALS['config']['PAGECACHE'],
 693         page_url($_SERVER),
 694         startsWith($query,'do=rss') && !isLoggedIn()
 695     );
 696     $cached = $cache->cachedVersion();
 697     if (! empty($cached)) {
 698         echo $cached;
 699         exit;
 700     }
 701
 702     // If cached was not found (or not usable), then read the database and build the response:
 703     $LINKSDB = new LinkDB(
 704         $GLOBALS['config']['DATASTORE'],
 705         isLoggedIn(),
 706         $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
 707         $GLOBALS['redirector']
 708     );
 709     // Read links from database (and filter private links if user it not logged in).
 710
 711     // Optionally filter the results:
 712     if (!empty($_GET['searchterm'])) {
 713         $linksToDisplay = $LINKSDB->filter(LinkFilter::$FILTER_TEXT, $_GET['searchterm']);
 714     }
 715     elseif (!empty($_GET['searchtags'])) {
 716         $linksToDisplay = $LINKSDB->filter(LinkFilter::$FILTER_TAG, trim($_GET['searchtags']));
 717     }
 718     else {
 719         $linksToDisplay = $LINKSDB;
 720     }
 721
 722     $nblinksToDisplay = 50;  // Number of links to display.
 723     // In URL, you can specificy the number of links. Example: nb=200 or nb=all for all links.
 724     if (!empty($_GET['nb'])) {
 725         $nblinksToDisplay = $_GET['nb'] == 'all' ? count($linksToDisplay) : max(intval($_GET['nb']), 1);
 726     }
 727
 728     $pageaddr = escape(index_url($_SERVER));
 729     echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">';
 730     echo '<channel><title>'.$GLOBALS['title'].'</title><link>'.$pageaddr.'</link>';
 731     echo '<description>Shared links</description><language>en-en</language><copyright>'.$pageaddr.'</copyright>'."\n\n";
 732     if (!empty($GLOBALS['config']['PUBSUBHUB_URL']))
 733     {
 734         echo '<!-- PubSubHubbub Discovery -->';
 735         echo '<link rel="hub" href="'.escape($GLOBALS['config']['PUBSUBHUB_URL']).'" xmlns="http://www.w3.org/2005/Atom" />';
 736         echo '<link rel="self" href="'.$pageaddr.'?do=rss" xmlns="http://www.w3.org/2005/Atom" />';
 737         echo '<!-- End Of PubSubHubbub Discovery -->';
 738     }
 739     $i=0;
 740     $keys=array(); foreach($linksToDisplay as $key=>$value) { $keys[]=$key; }  // No, I can't use array_keys().
 741     while ($i<$nblinksToDisplay && $i<count($keys))
 742     {
 743         $link = $linksToDisplay[$keys[$i]];
 744         $guid = $pageaddr.'?'.smallHash($link['linkdate']);
 745         $date = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $link['linkdate']);
 746         $absurl = $link['url'];
 747         if (startsWith($absurl,'?')) $absurl=$pageaddr.$absurl;  // make permalink URL absolute
 748         if ($usepermalinks===true)
 749             echo '<item><title>'.$link['title'].'</title><guid isPermaLink="true">'.$guid.'</guid><link>'.$guid.'</link>';
 750         else
 751             echo '<item><title>'.$link['title'].'</title><guid isPermaLink="false">'.$guid.'</guid><link>'.$absurl.'</link>';
 752         if (!$GLOBALS['config']['HIDE_TIMESTAMPS'] || isLoggedIn()) {
 753             echo '<pubDate>'.escape($date->format(DateTime::RSS))."</pubDate>\n";
 754         }
 755         if ($link['tags']!='') // Adding tags to each RSS entry (as mentioned in RSS specification)
 756         {
 757             foreach(explode(' ',$link['tags']) as $tag) { echo '<category domain="'.$pageaddr.'">'.$tag.'</category>'."\n"; }
 758         }
 759
 760         // Add permalink in description
 761         $descriptionlink = '(<a href="'.$guid.'">Permalink</a>)';
 762         // If user wants permalinks first, put the final link in description
 763         if ($usepermalinks===true) $descriptionlink = '(<a href="'.$absurl.'">Link</a>)';
 764         if (strlen($link['description'])>0) $descriptionlink = '<br>'.$descriptionlink;
 765         echo '<description><![CDATA['.
 766             format_description($link['description'], $GLOBALS['redirector']) .
 767             $descriptionlink . ']]></description>' . "\n</item>\n";
 768         $i++;
 769     }
 770     echo '</channel></rss><!-- Cached version of '.escape(page_url($_SERVER)).' -->';
 771
 772     $cache->cache(ob_get_contents());
 773     ob_end_flush();
 774     exit;
 775 }
 776
 777 // ------------------------------------------------------------------------------------------
 778 // Output the last N links in ATOM format.
 779 function showATOM()
 780 {
 781     header('Content-Type: application/atom+xml; charset=utf-8');
 782
 783     // $usepermalink : If true, use permalink instead of final link.
 784     // User just has to add 'permalink' in URL parameters. e.g. http://mysite.com/shaarli/?do=atom&permalinks
 785     $usepermalinks = isset($_GET['permalinks']) || !$GLOBALS['config']['ENABLE_RSS_PERMALINKS'];
 786
 787     // Cache system
 788     $query = $_SERVER["QUERY_STRING"];
 789     $cache = new CachedPage(
 790         $GLOBALS['config']['PAGECACHE'],
 791         page_url($_SERVER),
 792         startsWith($query,'do=atom') && !isLoggedIn()
 793     );
 794     $cached = $cache->cachedVersion();
 795     if (!empty($cached)) {
 796         echo $cached;
 797         exit;
 798     }
 799
 800     // If cached was not found (or not usable), then read the database and build the response:
 801     // Read links from database (and filter private links if used it not logged in).
 802     $LINKSDB = new LinkDB(
 803         $GLOBALS['config']['DATASTORE'],
 804         isLoggedIn(),
 805         $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
 806         $GLOBALS['redirector']
 807     );
 808
 809     // Optionally filter the results:
 810     if (!empty($_GET['searchterm'])) {
 811         $linksToDisplay = $LINKSDB->filter(LinkFilter::$FILTER_TEXT, $_GET['searchterm']);
 812     }
 813     else if (!empty($_GET['searchtags'])) {
 814         $linksToDisplay = $LINKSDB->filter(LinkFilter::$FILTER_TAG, trim($_GET['searchtags']));
 815     }
 816     else {
 817         $linksToDisplay = $LINKSDB;
 818     }
 819
 820     $nblinksToDisplay = 50;  // Number of links to display.
 821     // In URL, you can specificy the number of links. Example: nb=200 or nb=all for all links.
 822     if (!empty($_GET['nb'])) {
 823         $nblinksToDisplay = $_GET['nb']=='all' ? count($linksToDisplay) : max(intval($_GET['nb']), 1);
 824     }
 825
 826     $pageaddr=escape(index_url($_SERVER));
 827     $latestDate = '';
 828     $entries='';
 829     $i=0;
 830     $keys=array(); foreach($linksToDisplay as $key=>$value) { $keys[]=$key; }  // No, I can't use array_keys().
 831     while ($i<$nblinksToDisplay && $i<count($keys))
 832     {
 833         $link = $linksToDisplay[$keys[$i]];
 834         $guid = $pageaddr.'?'.smallHash($link['linkdate']);
 835         $date = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $link['linkdate']);
 836         $iso8601date = $date->format(DateTime::ISO8601);
 837         $latestDate = max($latestDate, $iso8601date);
 838         $absurl = $link['url'];
 839         if (startsWith($absurl,'?')) $absurl=$pageaddr.$absurl;  // make permalink URL absolute
 840         $entries.='<entry><title>'.$link['title'].'</title>';
 841         if ($usepermalinks===true)
 842             $entries.='<link href="'.$guid.'" /><id>'.$guid.'</id>';
 843         else
 844             $entries.='<link href="'.$absurl.'" /><id>'.$guid.'</id>';
 845
 846         if (!$GLOBALS['config']['HIDE_TIMESTAMPS'] || isLoggedIn()) {
 847             $entries.='<updated>'.escape($iso8601date).'</updated>';
 848         }
 849
 850         // Add permalink in description
 851         $descriptionlink = '(<a href="'.$guid.'">Permalink</a>)';
 852         // If user wants permalinks first, put the final link in description
 853         if ($usepermalinks===true) $descriptionlink = '(<a href="'.$absurl.'">Link</a>)';
 854         if (strlen($link['description'])>0) $descriptionlink = '<br>'.$descriptionlink;
 855
 856         $entries .= '<content type="html"><![CDATA['.
 857             format_description($link['description'], $GLOBALS['redirector']) .
 858             $descriptionlink . "]]></content>\n";
 859         if ($link['tags']!='') // Adding tags to each ATOM entry (as mentioned in ATOM specification)
 860         {
 861             foreach(explode(' ',$link['tags']) as $tag)
 862                 { $entries.='<category scheme="'.$pageaddr.'" term="'.$tag.'" />'."\n"; }
 863         }
 864         $entries.="</entry>\n";
 865         $i++;
 866     }
 867     $feed='<?xml version="1.0" encoding="UTF-8"?><feed xmlns="http://www.w3.org/2005/Atom">';
 868     $feed.='<title>'.$GLOBALS['title'].'</title>';
 869     if (!$GLOBALS['config']['HIDE_TIMESTAMPS'] || isLoggedIn()) $feed.='<updated>'.escape($latestDate).'</updated>';
 870     $feed.='<link rel="self" href="'.escape(server_url($_SERVER).$_SERVER["REQUEST_URI"]).'" />';
 871     if (!empty($GLOBALS['config']['PUBSUBHUB_URL']))
 872     {
 873         $feed.='<!-- PubSubHubbub Discovery -->';
 874         $feed.='<link rel="hub" href="'.escape($GLOBALS['config']['PUBSUBHUB_URL']).'" />';
 875         $feed.='<!-- End Of PubSubHubbub Discovery -->';
 876     }
 877     $feed.='<author><name>'.$pageaddr.'</name><uri>'.$pageaddr.'</uri></author>';
 878     $feed.='<id>'.$pageaddr.'</id>'."\n\n"; // Yes, I know I should use a real IRI (RFC3987), but the site URL will do.
 879     $feed.=$entries;
 880     $feed.='</feed><!-- Cached version of '.escape(page_url($_SERVER)).' -->';
 881     echo $feed;
 882
 883     $cache->cache(ob_get_contents());
 884     ob_end_flush();
 885     exit;
 886 }
 887
 888 // ------------------------------------------------------------------------------------------
 889 // Daily RSS feed: 1 RSS entry per day giving all the links on that day.
 890 // Gives the last 7 days (which have links).
 891 // This RSS feed cannot be filtered.
 892 function showDailyRSS() {
 893     // Cache system
 894     $query = $_SERVER["QUERY_STRING"];
 895     $cache = new CachedPage(
 896         $GLOBALS['config']['PAGECACHE'],
 897         page_url($_SERVER),
 898         startsWith($query,'do=dailyrss') && !isLoggedIn()
 899     );
 900     $cached = $cache->cachedVersion();
 901     if (!empty($cached)) {
 902         echo $cached;
 903         exit;
 904     }
 905
 906     // If cached was not found (or not usable), then read the database and build the response:
 907     // Read links from database (and filter private links if used it not logged in).
 908     $LINKSDB = new LinkDB(
 909         $GLOBALS['config']['DATASTORE'],
 910         isLoggedIn(),
 911         $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
 912         $GLOBALS['redirector']
 913     );
 914
 915     /* Some Shaarlies may have very few links, so we need to look
 916        back in time (rsort()) until we have enough days ($nb_of_days).
 917     */
 918     $linkdates = array();
 919     foreach ($LINKSDB as $linkdate => $value) {
 920         $linkdates[] = $linkdate;
 921     }
 922     rsort($linkdates);
 923     $nb_of_days = 7; // We take 7 days.
 924     $today = Date('Ymd');
 925     $days = array();
 926
 927     foreach ($linkdates as $linkdate) {
 928         $day = substr($linkdate, 0, 8); // Extract day (without time)
 929         if (strcmp($day,$today) < 0) {
 930             if (empty($days[$day])) {
 931                 $days[$day] = array();
 932             }
 933             $days[$day][] = $linkdate;
 934         }
 935
 936         if (count($days) > $nb_of_days) {
 937             break; // Have we collected enough days?
 938         }
 939     }
 940
 941     // Build the RSS feed.
 942     header('Content-Type: application/rss+xml; charset=utf-8');
 943     $pageaddr = escape(index_url($_SERVER));
 944     echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0">';
 945     echo '<channel>';
 946     echo '<title>Daily - '. $GLOBALS['title'] . '</title>';
 947     echo '<link>'. $pageaddr .'</link>';
 948     echo '<description>Daily shared links</description>';
 949     echo '<language>en-en</language>';
 950     echo '<copyright>'. $pageaddr .'</copyright>'. PHP_EOL;
 951
 952     // For each day.
 953     foreach ($days as $day => $linkdates) {
 954         $dayDate = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $day.'_000000');
 955         $absurl = escape(index_url($_SERVER).'?do=daily&day='.$day);  // Absolute URL of the corresponding "Daily" page.
 956
 957         // Build the HTML body of this RSS entry.
 958         $html = '';
 959         $href = '';
 960         $links = array();
 961
 962         // We pre-format some fields for proper output.
 963         foreach ($linkdates as $linkdate) {
 964             $l = $LINKSDB[$linkdate];
 965             $l['formatedDescription'] = format_description($l['description'], $GLOBALS['redirector']);
 966             $l['thumbnail'] = thumbnail($l['url']);
 967             $l_date = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $l['linkdate']);
 968             $l['timestamp'] = $l_date->getTimestamp();
 969             if (startsWith($l['url'], '?')) {
 970                 $l['url'] = index_url($_SERVER) . $l['url'];  // make permalink URL absolute
 971             }
 972             $links[$linkdate] = $l;
 973         }
 974
 975         // Then build the HTML for this day:
 976         $tpl = new RainTPL;
 977         $tpl->assign('title', $GLOBALS['title']);
 978         $tpl->assign('daydate', $dayDate->getTimestamp());
 979         $tpl->assign('absurl', $absurl);
 980         $tpl->assign('links', $links);
 981         $tpl->assign('rssdate', escape($dayDate->format(DateTime::RSS)));
 982         $html = $tpl->draw('dailyrss', $return_string=true);
 983
 984         echo $html . PHP_EOL;
 985     }
 986     echo '</channel></rss><!-- Cached version of '. escape(page_url($_SERVER)) .' -->';
 987
 988     $cache->cache(ob_get_contents());
 989     ob_end_flush();
 990     exit;
 991 }
 992
 993 /**
 994  * Show the 'Daily' page.
 995  *
 996  * @param PageBuilder $pageBuilder Template engine wrapper.
 997  */
 998 function showDaily($pageBuilder)
 999 {
1000     $LINKSDB = new LinkDB(
1001         $GLOBALS['config']['DATASTORE'],
1002         isLoggedIn(),
1003         $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
1004         $GLOBALS['redirector']
1005     );
1006
1007     $day=Date('Ymd',strtotime('-1 day')); // Yesterday, in format YYYYMMDD.
1008     if (isset($_GET['day'])) $day=$_GET['day'];
1009
1010     $days = $LINKSDB->days();
1011     $i = array_search($day,$days);
1012     if ($i===false) { $i=count($days)-1; $day=$days[$i]; }
1013     $previousday='';
1014     $nextday='';
1015     if ($i!==false)
1016     {
1017         if ($i>=1) $previousday=$days[$i-1];
1018         if ($i<count($days)-1) $nextday=$days[$i+1];
1019     }
1020
1021     try {
1022         $linksToDisplay = $LINKSDB->filter(LinkFilter::$FILTER_DAY, $day);
1023     } catch (Exception $exc) {
1024         error_log($exc);
1025         $linksToDisplay = array();
1026     }
1027
1028     // We pre-format some fields for proper output.
1029     foreach($linksToDisplay as $key=>$link)
1030     {
1031
1032         $taglist = explode(' ',$link['tags']);
1033         uasort($taglist, 'strcasecmp');
1034         $linksToDisplay[$key]['taglist']=$taglist;
1035         $linksToDisplay[$key]['formatedDescription'] = format_description($link['description'], $GLOBALS['redirector']);
1036         $linksToDisplay[$key]['thumbnail'] = thumbnail($link['url']);
1037         $date = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $link['linkdate']);
1038         $linksToDisplay[$key]['timestamp'] = $date->getTimestamp();
1039     }
1040
1041     /* We need to spread the articles on 3 columns.
1042        I did not want to use a JavaScript lib like http://masonry.desandro.com/
1043        so I manually spread entries with a simple method: I roughly evaluate the
1044        height of a div according to title and description length.
1045     */
1046     $columns=array(array(),array(),array()); // Entries to display, for each column.
1047     $fill=array(0,0,0);  // Rough estimate of columns fill.
1048     foreach($linksToDisplay as $key=>$link)
1049     {
1050         // Roughly estimate length of entry (by counting characters)
1051         // Title: 30 chars = 1 line. 1 line is 30 pixels height.
1052         // Description: 836 characters gives roughly 342 pixel height.
1053         // This is not perfect, but it's usually OK.
1054         $length=strlen($link['title'])+(342*strlen($link['description']))/836;
1055         if ($link['thumbnail']) $length +=100; // 1 thumbnails roughly takes 100 pixels height.
1056         // Then put in column which is the less filled:
1057         $smallest=min($fill); // find smallest value in array.
1058         $index=array_search($smallest,$fill); // find index of this smallest value.
1059         array_push($columns[$index],$link); // Put entry in this column.
1060         $fill[$index]+=$length;
1061     }
1062
1063     $dayDate = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $day.'_000000');
1064     $data = array(
1065         'linksToDisplay' => $linksToDisplay,
1066         'linkcount' => count($LINKSDB),
1067         'cols' => $columns,
1068         'day' => $dayDate->getTimestamp(),
1069         'previousday' => $previousday,
1070         'nextday' => $nextday,
1071     );
1072     $pluginManager = PluginManager::getInstance();
1073     $pluginManager->executeHooks('render_daily', $data, array('loggedin' => isLoggedIn()));
1074
1075     foreach ($data as $key => $value) {
1076         $pageBuilder->assign($key, $value);
1077     }
1078
1079     $pageBuilder->renderPage('daily');
1080     exit;
1081 }
1082
1083 // Renders the linklist
1084 function showLinkList($PAGE, $LINKSDB) {
1085     buildLinkList($PAGE,$LINKSDB); // Compute list of links to display
1086     $PAGE->renderPage('linklist');
1087 }
1088
1089
1090 // ------------------------------------------------------------------------------------------
1091 // Render HTML page (according to URL parameters and user rights)
1092 function renderPage()
1093 {
1094     $LINKSDB = new LinkDB(
1095         $GLOBALS['config']['DATASTORE'],
1096         isLoggedIn(),
1097         $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
1098         $GLOBALS['redirector']
1099     );
1100
1101     $updater = new Updater(
1102         read_updates_file($GLOBALS['config']['UPDATES_FILE']),
1103         $GLOBALS,
1104         $LINKSDB,
1105         isLoggedIn()
1106     );
1107     try {
1108         $newUpdates = $updater->update();
1109         if (! empty($newUpdates)) {
1110             write_updates_file(
1111                 $GLOBALS['config']['UPDATES_FILE'],
1112                 $updater->getDoneUpdates()
1113             );
1114         }
1115     }
1116     catch(Exception $e) {
1117         die($e->getMessage());
1118     }
1119
1120     $PAGE = new pageBuilder;
1121
1122     // Determine which page will be rendered.
1123     $query = (isset($_SERVER['QUERY_STRING'])) ? $_SERVER['QUERY_STRING'] : '';
1124     $targetPage = Router::findPage($query, $_GET, isLoggedIn());
1125
1126     // Call plugin hooks for header, footer and includes, specifying which page will be rendered.
1127     // Then assign generated data to RainTPL.
1128     $common_hooks = array(
1129         'includes',
1130         'header',
1131         'footer',
1132     );
1133     $pluginManager = PluginManager::getInstance();
1134     foreach($common_hooks as $name) {
1135         $plugin_data = array();
1136         $pluginManager->executeHooks('render_' . $name, $plugin_data,
1137             array(
1138                 'target' => $targetPage,
1139                 'loggedin' => isLoggedIn()
1140             )
1141         );
1142         $PAGE->assign('plugins_' . $name, $plugin_data);
1143     }
1144
1145     // -------- Display login form.
1146     if ($targetPage == Router::$PAGE_LOGIN)
1147     {
1148         if ($GLOBALS['config']['OPEN_SHAARLI']) { header('Location: ?'); exit; }  // No need to login for open Shaarli
1149         $token=''; if (ban_canLogin()) $token=getToken(); // Do not waste token generation if not useful.
1150         $PAGE->assign('token',$token);
1151         $PAGE->assign('returnurl',(isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']):''));
1152         $PAGE->renderPage('loginform');
1153         exit;
1154     }
1155     // -------- User wants to logout.
1156     if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=logout'))
1157     {
1158         invalidateCaches($GLOBALS['config']['PAGECACHE']);
1159         logout();
1160         header('Location: ?');
1161         exit;
1162     }
1163
1164     // -------- Picture wall
1165     if ($targetPage == Router::$PAGE_PICWALL)
1166     {
1167         // Optionally filter the results:
1168         if (!empty($_GET['searchterm'])) {
1169             $links = $LINKSDB->filter(LinkFilter::$FILTER_TEXT, $_GET['searchterm']);
1170         }
1171         elseif (! empty($_GET['searchtags'])) {
1172             $links = $LINKSDB->filter(LinkFilter::$FILTER_TAG, trim($_GET['searchtags']));
1173         }
1174         else {
1175             $links = $LINKSDB;
1176         }
1177
1178         $linksToDisplay = array();
1179
1180         // Get only links which have a thumbnail.
1181         foreach($links as $link)
1182         {
1183             $permalink='?'.escape(smallhash($link['linkdate']));
1184             $thumb=lazyThumbnail($link['url'],$permalink);
1185             if ($thumb!='') // Only output links which have a thumbnail.
1186             {
1187                 $link['thumbnail']=$thumb; // Thumbnail HTML code.
1188                 $linksToDisplay[]=$link; // Add to array.
1189             }
1190         }
1191
1192         $data = array(
1193             'linkcount' => count($LINKSDB),
1194             'linksToDisplay' => $linksToDisplay,
1195         );
1196         $pluginManager->executeHooks('render_picwall', $data, array('loggedin' => isLoggedIn()));
1197
1198         foreach ($data as $key => $value) {
1199             $PAGE->assign($key, $value);
1200         }
1201
1202         $PAGE->renderPage('picwall');
1203         exit;
1204     }
1205
1206     // -------- Tag cloud
1207     if ($targetPage == Router::$PAGE_TAGCLOUD)
1208     {
1209         $tags= $LINKSDB->allTags();
1210
1211         // We sort tags alphabetically, then choose a font size according to count.
1212         // First, find max value.
1213         $maxcount = 0;
1214         foreach ($tags as $value) {
1215             $maxcount = max($maxcount, $value);
1216         }
1217
1218         // Sort tags alphabetically: case insensitive, support locale if avalaible.
1219         uksort($tags, function($a, $b) {
1220             // Collator is part of PHP intl.
1221             if (class_exists('Collator')) {
1222                 $c = new Collator(setlocale(LC_ALL, 0));
1223                 return $c->compare($a, $b);
1224             } else {
1225                 return strcasecmp($a, $b);
1226             }
1227         });
1228
1229         $tagList=array();
1230         foreach($tags as $key=>$value)
1231         // Tag font size scaling: default 15 and 30 logarithm bases affect scaling, 22 and 6 are arbitrary font sizes for max and min sizes.
1232         {
1233             $tagList[$key] = array('count'=>$value,'size'=>log($value, 15) / log($maxcount, 30) * (22-6) + 6);
1234         }
1235
1236         $data = array(
1237             'linkcount' => count($LINKSDB),
1238             'tags' => $tagList,
1239         );
1240         $pluginManager->executeHooks('render_tagcloud', $data, array('loggedin' => isLoggedIn()));
1241
1242         foreach ($data as $key => $value) {
1243             $PAGE->assign($key, $value);
1244         }
1245
1246         $PAGE->renderPage('tagcloud');
1247         exit;
1248     }
1249
1250     // Daily page.
1251     if ($targetPage == Router::$PAGE_DAILY) {
1252         showDaily($PAGE);
1253     }
1254
1255     // Display openseach plugin (XML)
1256     if ($targetPage == Router::$PAGE_OPENSEARCH) {
1257         header('Content-Type: application/xml; charset=utf-8');
1258         $PAGE->assign('serverurl', index_url($_SERVER));
1259         $PAGE->renderPage('opensearch');
1260         exit;
1261     }
1262
1263     // -------- User clicks on a tag in a link: The tag is added to the list of searched tags (searchtags=...)
1264     if (isset($_GET['addtag']))
1265     {
1266         // Get previous URL (http_referer) and add the tag to the searchtags parameters in query.
1267         if (empty($_SERVER['HTTP_REFERER'])) { header('Location: ?searchtags='.urlencode($_GET['addtag'])); exit; } // In case browser does not send HTTP_REFERER
1268         parse_str(parse_url($_SERVER['HTTP_REFERER'],PHP_URL_QUERY), $params);
1269
1270         // Prevent redirection loop
1271         if (isset($params['addtag'])) {
1272             unset($params['addtag']);
1273         }
1274
1275         // Check if this tag is already in the search query and ignore it if it is.
1276         // Each tag is always separated by a space
1277         if (isset($params['searchtags'])) {
1278             $current_tags = explode(' ', $params['searchtags']);
1279         } else {
1280             $current_tags = array();
1281         }
1282         $addtag = true;
1283         foreach ($current_tags as $value) {
1284             if ($value === $_GET['addtag']) {
1285                 $addtag = false;
1286                 break;
1287             }
1288         }
1289         // Append the tag if necessary
1290         if (empty($params['searchtags'])) {
1291             $params['searchtags'] = trim($_GET['addtag']);
1292         }
1293         else if ($addtag) {
1294             $params['searchtags'] = trim($params['searchtags']).' '.trim($_GET['addtag']);
1295         }
1296
1297         unset($params['page']); // We also remove page (keeping the same page has no sense, since the results are different)
1298         header('Location: ?'.http_build_query($params));
1299         exit;
1300     }
1301
1302     // -------- User clicks on a tag in result count: Remove the tag from the list of searched tags (searchtags=...)
1303     if (isset($_GET['removetag'])) {
1304         // Get previous URL (http_referer) and remove the tag from the searchtags parameters in query.
1305         if (empty($_SERVER['HTTP_REFERER'])) {
1306             header('Location: ?');
1307             exit;
1308         }
1309
1310         // In case browser does not send HTTP_REFERER
1311         parse_str(parse_url($_SERVER['HTTP_REFERER'], PHP_URL_QUERY), $params);
1312
1313         // Prevent redirection loop
1314         if (isset($params['removetag'])) {
1315             unset($params['removetag']);
1316         }
1317
1318         if (isset($params['searchtags'])) {
1319             $tags = explode(' ', $params['searchtags']);
1320             // Remove value from array $tags.
1321             $tags = array_diff($tags, array($_GET['removetag']));
1322             $params['searchtags'] = implode(' ',$tags);
1323
1324             if (empty($params['searchtags'])) {
1325                 unset($params['searchtags']);
1326             }
1327
1328             unset($params['page']); // We also remove page (keeping the same page has no sense, since the results are different)
1329         }
1330         header('Location: ?'.http_build_query($params));
1331         exit;
1332     }
1333
1334     // -------- User wants to change the number of links per page (linksperpage=...)
1335     if (isset($_GET['linksperpage'])) {
1336         if (is_numeric($_GET['linksperpage'])) {
1337             $_SESSION['LINKS_PER_PAGE']=abs(intval($_GET['linksperpage']));
1338         }
1339
1340         header('Location: '. generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('linksperpage')));
1341         exit;
1342     }
1343
1344     // -------- User wants to see only private links (toggle)
1345     if (isset($_GET['privateonly'])) {
1346         if (empty($_SESSION['privateonly'])) {
1347             $_SESSION['privateonly'] = 1; // See only private links
1348         } else {
1349             unset($_SESSION['privateonly']); // See all links
1350         }
1351
1352         header('Location: '. generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('privateonly')));
1353         exit;
1354     }
1355
1356     // -------- Handle other actions allowed for non-logged in users:
1357     if (!isLoggedIn())
1358     {
1359         // User tries to post new link but is not logged in:
1360         // Show login screen, then redirect to ?post=...
1361         if (isset($_GET['post']))
1362         {
1363             header('Location: ?do=login&post='.urlencode($_GET['post']).(!empty($_GET['title'])?'&title='.urlencode($_GET['title']):'').(!empty($_GET['description'])?'&description='.urlencode($_GET['description']):'').(!empty($_GET['source'])?'&source='.urlencode($_GET['source']):'')); // Redirect to login page, then back to post link.
1364             exit;
1365         }
1366
1367                 // Same case as above except that user tried to access ?do=addlink without being logged in
1368                 // Note: passing empty parameters makes Shaarli generate default URLs and descriptions.
1369                 if (isset($_GET['do']) && $_GET['do'] === 'addlink') {
1370                         header('Location: ?do=login&post=');
1371                         exit;
1372                 }
1373         showLinkList($PAGE, $LINKSDB);
1374         if (isset($_GET['edit_link'])) {
1375             header('Location: ?do=login&edit_link='. escape($_GET['edit_link']));
1376             exit;
1377         }
1378
1379         exit; // Never remove this one! All operations below are reserved for logged in user.
1380     }
1381
1382     // -------- All other functions are reserved for the registered user:
1383
1384     // -------- Display the Tools menu if requested (import/export/bookmarklet...)
1385     if ($targetPage == Router::$PAGE_TOOLS)
1386     {
1387         $data = array(
1388             'linkcount' => count($LINKSDB),
1389             'pageabsaddr' => index_url($_SERVER),
1390         );
1391         $pluginManager->executeHooks('render_tools', $data);
1392
1393         foreach ($data as $key => $value) {
1394             $PAGE->assign($key, $value);
1395         }
1396
1397         $PAGE->renderPage('tools');
1398         exit;
1399     }
1400
1401     // -------- User wants to change his/her password.
1402     if ($targetPage == Router::$PAGE_CHANGEPASSWORD)
1403     {
1404         if ($GLOBALS['config']['OPEN_SHAARLI']) die('You are not supposed to change a password on an Open Shaarli.');
1405         if (!empty($_POST['setpassword']) && !empty($_POST['oldpassword']))
1406         {
1407             if (!tokenOk($_POST['token'])) die('Wrong token.'); // Go away!
1408
1409             // Make sure old password is correct.
1410             $oldhash = sha1($_POST['oldpassword'].$GLOBALS['login'].$GLOBALS['salt']);
1411             if ($oldhash!=$GLOBALS['hash']) { echo '<script>alert("The old password is not correct.");document.location=\'?do=changepasswd\';</script>'; exit; }
1412             // Save new password
1413             $GLOBALS['salt'] = sha1(uniqid('',true).'_'.mt_rand()); // Salt renders rainbow-tables attacks useless.
1414             $GLOBALS['hash'] = sha1($_POST['setpassword'].$GLOBALS['login'].$GLOBALS['salt']);
1415             try {
1416                 writeConfig($GLOBALS, isLoggedIn());
1417             }
1418             catch(Exception $e) {
1419                 error_log(
1420                     'ERROR while writing config file after changing password.' . PHP_EOL .
1421                     $e->getMessage()
1422                 );
1423
1424                 // TODO: do not handle exceptions/errors in JS.
1425                 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do=tools\';</script>';
1426                 exit;
1427             }
1428             echo '<script>alert("Your password has been changed.");document.location=\'?do=tools\';</script>';
1429             exit;
1430         }
1431         else // show the change password form.
1432         {
1433             $PAGE->assign('linkcount',count($LINKSDB));
1434             $PAGE->assign('token',getToken());
1435             $PAGE->renderPage('changepassword');
1436             exit;
1437         }
1438     }
1439
1440     // -------- User wants to change configuration
1441     if ($targetPage == Router::$PAGE_CONFIGURE)
1442     {
1443         if (!empty($_POST['title']) )
1444         {
1445             if (!tokenOk($_POST['token'])) die('Wrong token.'); // Go away!
1446             $tz = 'UTC';
1447             if (!empty($_POST['continent']) && !empty($_POST['city']))
1448                 if (isTimeZoneValid($_POST['continent'],$_POST['city']))
1449                     $tz = $_POST['continent'].'/'.$_POST['city'];
1450             $GLOBALS['timezone'] = $tz;
1451             $GLOBALS['title']=$_POST['title'];
1452             $GLOBALS['titleLink']=$_POST['titleLink'];
1453             $GLOBALS['redirector']=$_POST['redirector'];
1454             $GLOBALS['disablesessionprotection']=!empty($_POST['disablesessionprotection']);
1455             $GLOBALS['privateLinkByDefault']=!empty($_POST['privateLinkByDefault']);
1456             $GLOBALS['config']['ENABLE_RSS_PERMALINKS']= !empty($_POST['enableRssPermalinks']);
1457             $GLOBALS['config']['ENABLE_UPDATECHECK'] = !empty($_POST['updateCheck']);
1458             $GLOBALS['config']['HIDE_PUBLIC_LINKS'] = !empty($_POST['hidePublicLinks']);
1459             try {
1460                 writeConfig($GLOBALS, isLoggedIn());
1461             }
1462             catch(Exception $e) {
1463                 error_log(
1464                     'ERROR while writing config file after configuration update.' . PHP_EOL .
1465                     $e->getMessage()
1466                 );
1467
1468                 // TODO: do not handle exceptions/errors in JS.
1469                 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do=tools\';</script>';
1470                 exit;
1471             }
1472             echo '<script>alert("Configuration was saved.");document.location=\'?do=tools\';</script>';
1473             exit;
1474         }
1475         else // Show the configuration form.
1476         {
1477             $PAGE->assign('linkcount',count($LINKSDB));
1478             $PAGE->assign('token',getToken());
1479             $PAGE->assign('title', empty($GLOBALS['title']) ? '' : $GLOBALS['title'] );
1480             $PAGE->assign('redirector', empty($GLOBALS['redirector']) ? '' : $GLOBALS['redirector'] );
1481             list($timezone_form, $timezone_js) = generateTimeZoneForm($GLOBALS['timezone']);
1482             $PAGE->assign('timezone_form', $timezone_form);
1483             $PAGE->assign('timezone_js',$timezone_js);
1484             $PAGE->renderPage('configure');
1485             exit;
1486         }
1487     }
1488
1489     // -------- User wants to rename a tag or delete it
1490     if ($targetPage == Router::$PAGE_CHANGETAG)
1491     {
1492         if (empty($_POST['fromtag']) || (empty($_POST['totag']) && isset($_POST['renametag']))) {
1493             $PAGE->assign('linkcount', count($LINKSDB));
1494             $PAGE->assign('token', getToken());
1495             $PAGE->assign('tags', $LINKSDB->allTags());
1496             $PAGE->renderPage('changetag');
1497             exit;
1498         }
1499
1500         if (!tokenOk($_POST['token'])) {
1501             die('Wrong token.');
1502         }
1503
1504         // Delete a tag:
1505         if (isset($_POST['deletetag']) && !empty($_POST['fromtag'])) {
1506             $needle=trim($_POST['fromtag']);
1507             // True for case-sensitive tag search.
1508             $linksToAlter = $LINKSDB->filter(LinkFilter::$FILTER_TAG, $needle, true);
1509             foreach($linksToAlter as $key=>$value)
1510             {
1511                 $tags = explode(' ',trim($value['tags']));
1512                 unset($tags[array_search($needle,$tags)]); // Remove tag.
1513                 $value['tags']=trim(implode(' ',$tags));
1514                 $LINKSDB[$key]=$value;
1515             }
1516             $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']);
1517             echo '<script>alert("Tag was removed from '.count($linksToAlter).' links.");document.location=\'?\';</script>';
1518             exit;
1519         }
1520
1521         // Rename a tag:
1522         if (isset($_POST['renametag']) && !empty($_POST['fromtag']) && !empty($_POST['totag'])) {
1523             $needle=trim($_POST['fromtag']);
1524             // True for case-sensitive tag search.
1525             $linksToAlter = $LINKSDB->filter(LinkFilter::$FILTER_TAG, $needle, true);
1526             foreach($linksToAlter as $key=>$value)
1527             {
1528                 $tags = explode(' ',trim($value['tags']));
1529                 $tags[array_search($needle,$tags)] = trim($_POST['totag']); // Replace tags value.
1530                 $value['tags']=trim(implode(' ',$tags));
1531                 $LINKSDB[$key]=$value;
1532             }
1533             $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']); // Save to disk.
1534             echo '<script>alert("Tag was renamed in '.count($linksToAlter).' links.");document.location=\'?searchtags='.urlencode($_POST['totag']).'\';</script>';
1535             exit;
1536         }
1537     }
1538
1539     // -------- User wants to add a link without using the bookmarklet: Show form.
1540     if ($targetPage == Router::$PAGE_ADDLINK)
1541     {
1542         $PAGE->assign('linkcount',count($LINKSDB));
1543         $PAGE->renderPage('addlink');
1544         exit;
1545     }
1546
1547     // -------- User clicked the "Save" button when editing a link: Save link to database.
1548     if (isset($_POST['save_edit']))
1549     {
1550         // Go away!
1551         if (! tokenOk($_POST['token'])) {
1552             die('Wrong token.');
1553         }
1554         // Remove multiple spaces.
1555         $tags = trim(preg_replace('/\s\s+/', ' ', $_POST['lf_tags']));
1556         // Remove first '-' char in tags.
1557         $tags = preg_replace('/(^| )\-/', '$1', $tags);
1558         // Remove duplicates.
1559         $tags = implode(' ', array_unique(explode(' ', $tags)));
1560         $linkdate = $_POST['lf_linkdate'];
1561         $url = trim($_POST['lf_url']);
1562         if (! startsWith($url, 'http:') && ! startsWith($url, 'https:')
1563             && ! startsWith($url, 'ftp:') && ! startsWith($url, 'magnet:')
1564             && ! startsWith($url, '?') && ! startsWith($url, 'javascript:')
1565         ) {
1566             $url = 'http://' . $url;
1567         }
1568
1569         $link = array(
1570             'title' => trim($_POST['lf_title']),
1571             'url' => $url,
1572             'description' => trim($_POST['lf_description']),
1573             'private' => (isset($_POST['lf_private']) ? 1 : 0),
1574             'linkdate' => $linkdate,
1575             'tags' => str_replace(',', ' ', $tags)
1576         );
1577         // If title is empty, use the URL as title.
1578         if ($link['title'] == '') {
1579             $link['title'] = $link['url'];
1580         }
1581
1582         $pluginManager->executeHooks('save_link', $link);
1583
1584         $LINKSDB[$linkdate] = $link;
1585         $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']);
1586         pubsubhub();
1587
1588         // If we are called from the bookmarklet, we must close the popup:
1589         if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) {
1590             echo '<script>self.close();</script>';
1591             exit;
1592         }
1593
1594         $returnurl = !empty($_POST['returnurl']) ? $_POST['returnurl'] : '?';
1595         $location = generateLocation($returnurl, $_SERVER['HTTP_HOST'], array('addlink', 'post', 'edit_link'));
1596         // Scroll to the link which has been edited.
1597         $location .= '#' . smallHash($_POST['lf_linkdate']);
1598         // After saving the link, redirect to the page the user was on.
1599         header('Location: '. $location);
1600         exit;
1601     }
1602
1603     // -------- User clicked the "Cancel" button when editing a link.
1604     if (isset($_POST['cancel_edit']))
1605     {
1606         // If we are called from the bookmarklet, we must close the popup:
1607         if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) { echo '<script>self.close();</script>'; exit; }
1608         $returnurl = ( isset($_POST['returnurl']) ? $_POST['returnurl'] : '?' );
1609         $returnurl .= '#'.smallHash($_POST['lf_linkdate']);  // Scroll to the link which has been edited.
1610         $returnurl = generateLocation($returnurl, $_SERVER['HTTP_HOST'], array('addlink', 'post', 'edit_link'));
1611         header('Location: '.$returnurl); // After canceling, redirect to the page the user was on.
1612         exit;
1613     }
1614
1615     // -------- User clicked the "Delete" button when editing a link: Delete link from database.
1616     if (isset($_POST['delete_link']))
1617     {
1618         if (!tokenOk($_POST['token'])) die('Wrong token.');
1619         // We do not need to ask for confirmation:
1620         // - confirmation is handled by JavaScript
1621         // - we are protected from XSRF by the token.
1622         $linkdate=$_POST['lf_linkdate'];
1623
1624         $pluginManager->executeHooks('delete_link', $LINKSDB[$linkdate]);
1625
1626         unset($LINKSDB[$linkdate]);
1627         $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']); // save to disk
1628
1629         // If we are called from the bookmarklet, we must close the popup:
1630         if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) { echo '<script>self.close();</script>'; exit; }
1631         // Pick where we're going to redirect
1632         // =============================================================
1633         // Basically, we can't redirect to where we were previously if it was a permalink
1634         // or an edit_link, because it would 404.
1635         // Cases:
1636         //    - /             : nothing in $_GET, redirect to self
1637         //    - /?page        : redirect to self
1638         //    - /?searchterm  : redirect to self (there might be other links)
1639         //    - /?searchtags  : redirect to self
1640         //    - /permalink    : redirect to / (the link does not exist anymore)
1641         //    - /?edit_link   : redirect to / (the link does not exist anymore)
1642         // PHP treats the permalink as a $_GET variable, so we need to check if every condition for self
1643         // redirect is not satisfied, and only then redirect to /
1644         $location = "?";
1645         // Self redirection
1646         if (count($_GET) == 0
1647             || isset($_GET['page'])
1648             || isset($_GET['searchterm'])
1649             || isset($_GET['searchtags'])
1650         ) {
1651             if (isset($_POST['returnurl'])) {
1652                 $location = $_POST['returnurl']; // Handle redirects given by the form
1653             } else {
1654                 $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('delete_link'));
1655             }
1656         }
1657
1658         header('Location: ' . $location); // After deleting the link, redirect to appropriate location
1659         exit;
1660     }
1661
1662     // -------- User clicked the "EDIT" button on a link: Display link edit form.
1663     if (isset($_GET['edit_link']))
1664     {
1665         $link = $LINKSDB[$_GET['edit_link']];  // Read database
1666         if (!$link) { header('Location: ?'); exit; } // Link not found in database.
1667         $data = array(
1668             'linkcount' => count($LINKSDB),
1669             'link' => $link,
1670             'link_is_new' => false,
1671             'token' => getToken(),
1672             'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
1673             'tags' => $LINKSDB->allTags(),
1674         );
1675         $pluginManager->executeHooks('render_editlink', $data);
1676
1677         foreach ($data as $key => $value) {
1678             $PAGE->assign($key, $value);
1679         }
1680
1681         $PAGE->renderPage('editlink');
1682         exit;
1683     }
1684
1685     // -------- User want to post a new link: Display link edit form.
1686     if (isset($_GET['post'])) {
1687         $url = cleanup_url(escape($_GET['post']));
1688
1689         $link_is_new = false;
1690         // Check if URL is not already in database (in this case, we will edit the existing link)
1691         $link = $LINKSDB->getLinkFromUrl($url);
1692         if (!$link)
1693         {
1694             $link_is_new = true;
1695             $linkdate = strval(date('Ymd_His'));
1696             // Get title if it was provided in URL (by the bookmarklet).
1697             $title = empty($_GET['title']) ? '' : escape($_GET['title']);
1698             // Get description if it was provided in URL (by the bookmarklet). [Bronco added that]
1699             $description = empty($_GET['description']) ? '' : escape($_GET['description']);
1700             $tags = empty($_GET['tags']) ? '' : escape($_GET['tags']);
1701             $private = !empty($_GET['private']) && $_GET['private'] === "1" ? 1 : 0;
1702             // If this is an HTTP(S) link, we try go get the page to extract the title (otherwise we will to straight to the edit form.)
1703             if (empty($title) && strpos(get_url_scheme($url), 'http') !== false) {
1704                 // Short timeout to keep the application responsive
1705                 list($headers, $content) = get_http_response($url, 4);
1706                 if (strpos($headers[0], '200 OK') !== false) {
1707                     // Retrieve charset.
1708                     $charset = get_charset($headers, $content);
1709                     // Extract title.
1710                     $title = html_extract_title($content);
1711                     // Re-encode title in utf-8 if necessary.
1712                     if (! empty($title) && $charset != 'utf-8') {
1713                         $title = mb_convert_encoding($title, $charset, 'utf-8');
1714                     }
1715                 }
1716             }
1717
1718             if ($url == '') {
1719                 $url = '?' . smallHash($linkdate);
1720                 $title = 'Note: ';
1721             }
1722
1723             $link = array(
1724                 'linkdate' => $linkdate,
1725                 'title' => $title,
1726                 'url' => $url,
1727                 'description' => $description,
1728                 'tags' => $tags,
1729                 'private' => $private
1730             );
1731         }
1732
1733         $data = array(
1734             'linkcount' => count($LINKSDB),
1735             'link' => $link,
1736             'link_is_new' => $link_is_new,
1737             'token' => getToken(), // XSRF protection.
1738             'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
1739             'source' => (isset($_GET['source']) ? $_GET['source'] : ''),
1740             'tags' => $LINKSDB->allTags(),
1741         );
1742         $pluginManager->executeHooks('render_editlink', $data);
1743
1744         foreach ($data as $key => $value) {
1745             $PAGE->assign($key, $value);
1746         }
1747
1748         $PAGE->renderPage('editlink');
1749         exit;
1750     }
1751
1752     // -------- Export as Netscape Bookmarks HTML file.
1753     if ($targetPage == Router::$PAGE_EXPORT)
1754     {
1755         if (empty($_GET['what']))
1756         {
1757             $PAGE->assign('linkcount',count($LINKSDB));
1758             $PAGE->renderPage('export');
1759             exit;
1760         }
1761         $exportWhat=$_GET['what'];
1762         if (!array_intersect(array('all','public','private'),array($exportWhat))) die('What are you trying to export???');
1763
1764         header('Content-Type: text/html; charset=utf-8');
1765         header('Content-disposition: attachment; filename=bookmarks_'.$exportWhat.'_'.strval(date('Ymd_His')).'.html');
1766         $currentdate=date('Y/m/d H:i:s');
1767         echo <<<HTML
1768 <!DOCTYPE NETSCAPE-Bookmark-file-1>
1769 <!-- This is an automatically generated file.
1770      It will be read and overwritten.
1771      DO NOT EDIT! -->
1772 <!-- Shaarli {$exportWhat} bookmarks export on {$currentdate} -->
1773 <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8">
1774 <TITLE>Bookmarks</TITLE>
1775 <H1>Bookmarks</H1>
1776 HTML;
1777         foreach($LINKSDB as $link)
1778         {
1779             if ($exportWhat=='all' ||
1780                ($exportWhat=='private' && $link['private']!=0) ||
1781                ($exportWhat=='public' && $link['private']==0))
1782             {
1783                 $date = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $link['linkdate']);
1784                 echo '<DT><A HREF="'.$link['url'].'" ADD_DATE="'.$date->getTimestamp().'" PRIVATE="'.$link['private'].'"';
1785                 if ($link['tags']!='') echo ' TAGS="'.str_replace(' ',',',$link['tags']).'"';
1786                 echo '>'.$link['title']."</A>\n";
1787                 if ($link['description']!='') echo '<DD>'.$link['description']."\n";
1788             }
1789         }
1790                 exit;
1791     }
1792
1793     // -------- User is uploading a file for import
1794     if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=upload'))
1795     {
1796         // If file is too big, some form field may be missing.
1797         if (!isset($_POST['token']) || (!isset($_FILES)) || (isset($_FILES['filetoupload']['size']) && $_FILES['filetoupload']['size']==0))
1798         {
1799             $returnurl = ( empty($_SERVER['HTTP_REFERER']) ? '?' : $_SERVER['HTTP_REFERER'] );
1800             echo '<script>alert("The file you are trying to upload is probably bigger than what this webserver can accept ('.getMaxFileSize().' bytes). Please upload in smaller chunks.");document.location=\''.escape($returnurl).'\';</script>';
1801             exit;
1802         }
1803         if (!tokenOk($_POST['token'])) die('Wrong token.');
1804         importFile();
1805         exit;
1806     }
1807
1808     // -------- Show upload/import dialog:
1809     if ($targetPage == Router::$PAGE_IMPORT)
1810     {
1811         $PAGE->assign('linkcount',count($LINKSDB));
1812         $PAGE->assign('token',getToken());
1813         $PAGE->assign('maxfilesize',getMaxFileSize());
1814         $PAGE->renderPage('import');
1815         exit;
1816     }
1817
1818     // Plugin administration page
1819     if ($targetPage == Router::$PAGE_PLUGINSADMIN) {
1820         $pluginMeta = $pluginManager->getPluginsMeta();
1821
1822         // Split plugins into 2 arrays: ordered enabled plugins and disabled.
1823         $enabledPlugins = array_filter($pluginMeta, function($v) { return $v['order'] !== false; });
1824         // Load parameters.
1825         $enabledPlugins = load_plugin_parameter_values($enabledPlugins, $GLOBALS['plugins']);
1826         uasort(
1827             $enabledPlugins,
1828             function($a, $b) { return $a['order'] - $b['order']; }
1829         );
1830         $disabledPlugins = array_filter($pluginMeta, function($v) { return $v['order'] === false; });
1831
1832         $PAGE->assign('enabledPlugins', $enabledPlugins);
1833         $PAGE->assign('disabledPlugins', $disabledPlugins);
1834         $PAGE->renderPage('pluginsadmin');
1835         exit;
1836     }
1837
1838     // Plugin administration form action
1839     if ($targetPage == Router::$PAGE_SAVE_PLUGINSADMIN) {
1840         try {
1841             if (isset($_POST['parameters_form'])) {
1842                 unset($_POST['parameters_form']);
1843                 foreach ($_POST as $param => $value) {
1844                     $GLOBALS['plugins'][$param] = escape($value);
1845                 }
1846             }
1847             else {
1848                 $GLOBALS['config']['ENABLED_PLUGINS'] = save_plugin_config($_POST);
1849             }
1850             writeConfig($GLOBALS, isLoggedIn());
1851         }
1852         catch (Exception $e) {
1853             error_log(
1854                 'ERROR while saving plugin configuration:.' . PHP_EOL .
1855                 $e->getMessage()
1856             );
1857
1858             // TODO: do not handle exceptions/errors in JS.
1859             echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do='. Router::$PAGE_PLUGINSADMIN .'\';</script>';
1860             exit;
1861         }
1862         header('Location: ?do='. Router::$PAGE_PLUGINSADMIN);
1863         exit;
1864     }
1865
1866     // -------- Otherwise, simply display search form and links:
1867     showLinkList($PAGE, $LINKSDB);
1868     exit;
1869 }
1870
1871 // -----------------------------------------------------------------------------------------------
1872 // Process the import file form.
1873 function importFile()
1874 {
1875     if (!isLoggedIn()) { die('Not allowed.'); }
1876     $LINKSDB = new LinkDB(
1877         $GLOBALS['config']['DATASTORE'],
1878         isLoggedIn(),
1879         $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
1880         $GLOBALS['redirector']
1881     );
1882     $filename=$_FILES['filetoupload']['name'];
1883     $filesize=$_FILES['filetoupload']['size'];
1884     $data=file_get_contents($_FILES['filetoupload']['tmp_name']);
1885     $private = (empty($_POST['private']) ? 0 : 1); // Should the links be imported as private?
1886     $overwrite = !empty($_POST['overwrite']) ; // Should the imported links overwrite existing ones?
1887     $import_count=0;
1888
1889     // Sniff file type:
1890     $type='unknown';
1891     if (startsWith($data,'<!DOCTYPE NETSCAPE-Bookmark-file-1>')) $type='netscape'; // Netscape bookmark file (aka Firefox).
1892
1893     // Then import the bookmarks.
1894     if ($type=='netscape')
1895     {
1896         // This is a standard Netscape-style bookmark file.
1897         // This format is supported by all browsers (except IE, of course), also Delicious, Diigo and others.
1898         foreach(explode('<DT>',$data) as $html) // explode is very fast
1899         {
1900             $link = array('linkdate'=>'','title'=>'','url'=>'','description'=>'','tags'=>'','private'=>0);
1901             $d = explode('<DD>',$html);
1902             if (startswith($d[0],'<A '))
1903             {
1904                 $link['description'] = (isset($d[1]) ? html_entity_decode(trim($d[1]),ENT_QUOTES,'UTF-8') : '');  // Get description (optional)
1905                 preg_match('!<A .*?>(.*?)</A>!i',$d[0],$matches); $link['title'] = (isset($matches[1]) ? trim($matches[1]) : '');  // Get title
1906                 $link['title'] = html_entity_decode($link['title'],ENT_QUOTES,'UTF-8');
1907                 preg_match_all('! ([A-Z_]+)=\"(.*?)"!i',$html,$matches,PREG_SET_ORDER);  // Get all other attributes
1908                 $raw_add_date=0;
1909                 foreach($matches as $m)
1910                 {
1911                     $attr=$m[1]; $value=$m[2];
1912                     if ($attr=='HREF') $link['url']=html_entity_decode($value,ENT_QUOTES,'UTF-8');
1913                     elseif ($attr=='ADD_DATE')
1914                     {
1915                         $raw_add_date=intval($value);
1916                         if ($raw_add_date>30000000000) $raw_add_date/=1000;     //If larger than year 2920, then was likely stored in milliseconds instead of seconds
1917                     }
1918                     elseif ($attr=='PRIVATE') $link['private']=($value=='0'?0:1);
1919                     elseif ($attr=='TAGS') $link['tags']=html_entity_decode(str_replace(',',' ',$value),ENT_QUOTES,'UTF-8');
1920                 }
1921                 if ($link['url']!='')
1922                 {
1923                     if ($private==1) $link['private']=1;
1924                     $dblink = $LINKSDB->getLinkFromUrl($link['url']); // See if the link is already in database.
1925                     if ($dblink==false)
1926                     {  // Link not in database, let's import it...
1927                        if (empty($raw_add_date)) $raw_add_date=time(); // In case of shitty bookmark file with no ADD_DATE
1928
1929                        // Make sure date/time is not already used by another link.
1930                        // (Some bookmark files have several different links with the same ADD_DATE)
1931                        // We increment date by 1 second until we find a date which is not used in DB.
1932                        // (so that links that have the same date/time are more or less kept grouped by date, but do not conflict.)
1933                        while (!empty($LINKSDB[date('Ymd_His',$raw_add_date)])) { $raw_add_date++; }// Yes, I know it's ugly.
1934                        $link['linkdate']=date('Ymd_His',$raw_add_date);
1935                        $LINKSDB[$link['linkdate']] = $link;
1936                        $import_count++;
1937                     }
1938                     else // Link already present in database.
1939                     {
1940                         if ($overwrite)
1941                         {   // If overwrite is required, we import link data, except date/time.
1942                             $link['linkdate']=$dblink['linkdate'];
1943                             $LINKSDB[$link['linkdate']] = $link;
1944                             $import_count++;
1945                         }
1946                     }
1947
1948                 }
1949             }
1950         }
1951         $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']);
1952
1953         echo '<script>alert("File '.json_encode($filename).' ('.$filesize.' bytes) was successfully processed: '.$import_count.' links imported.");document.location=\'?\';</script>';
1954     }
1955     else
1956     {
1957         echo '<script>alert("File '.json_encode($filename).' ('.$filesize.' bytes) has an unknown file format. Nothing was imported.");document.location=\'?\';</script>';
1958     }
1959 }
1960
1961 // -----------------------------------------------------------------------------------------------
1962 // Template for the list of links (<div id="linklist">)
1963 // This function fills all the necessary fields in the $PAGE for the template 'linklist.html'
1964 function buildLinkList($PAGE,$LINKSDB)
1965 {
1966     // ---- Filter link database according to parameters
1967     $search_type = '';
1968     $search_crits = '';
1969     $privateonly = !empty($_SESSION['privateonly']) ? true : false;
1970
1971     // Fulltext search
1972     if (isset($_GET['searchterm'])) {
1973         $search_crits = escape(trim($_GET['searchterm']));
1974         $search_type = LinkFilter::$FILTER_TEXT;
1975         $linksToDisplay = $LINKSDB->filter($search_type, $search_crits, false, $privateonly);
1976     }
1977     // Search by tag
1978     elseif (isset($_GET['searchtags'])) {
1979         $search_crits = explode(' ', escape(trim($_GET['searchtags'])));
1980         $search_type = LinkFilter::$FILTER_TAG;
1981         $linksToDisplay = $LINKSDB->filter($search_type, $search_crits, false, $privateonly);
1982     }
1983     // Detect smallHashes in URL.
1984     elseif (isset($_SERVER['QUERY_STRING'])
1985         && preg_match('/[a-zA-Z0-9-_@]{6}(&.+?)?/', $_SERVER['QUERY_STRING'])) {
1986         $search_type = LinkFilter::$FILTER_HASH;
1987         $search_crits = substr(trim($_SERVER["QUERY_STRING"], '/'), 0, 6);
1988         $linksToDisplay = $LINKSDB->filter($search_type, $search_crits);
1989
1990         if (count($linksToDisplay) == 0) {
1991             $PAGE->render404('The link you are trying to reach does not exist or has been deleted.');
1992             exit;
1993         }
1994     }
1995     // Otherwise, display without filtering.
1996     else {
1997         $linksToDisplay = $LINKSDB->filter('', '', false, $privateonly);
1998     }
1999
2000     // ---- Handle paging.
2001     $keys = array();
2002     foreach ($linksToDisplay as $key => $value) {
2003         $keys[] = $key;
2004     }
2005
2006     // If there is only a single link, we change on-the-fly the title of the page.
2007     if (count($linksToDisplay) == 1) {
2008         $GLOBALS['pagetitle'] = $linksToDisplay[$keys[0]]['title'].' - '.$GLOBALS['title'];
2009     }
2010
2011     // Select articles according to paging.
2012     $pagecount = ceil(count($keys) / $_SESSION['LINKS_PER_PAGE']);
2013     $pagecount = $pagecount == 0 ? 1 : $pagecount;
2014     $page= empty($_GET['page']) ? 1 : intval($_GET['page']);
2015     $page = $page < 1 ? 1 : $page;
2016     $page = $page > $pagecount ? $pagecount : $page;
2017     // Start index.
2018     $i = ($page-1) * $_SESSION['LINKS_PER_PAGE'];
2019     $end = $i + $_SESSION['LINKS_PER_PAGE'];
2020     $linkDisp = array();
2021     while ($i<$end && $i<count($keys))
2022     {
2023         $link = $linksToDisplay[$keys[$i]];
2024         $link['description'] = format_description($link['description'], $GLOBALS['redirector']);
2025         $classLi =  ($i % 2) != 0 ? '' : 'publicLinkHightLight';
2026         $link['class'] = $link['private'] == 0 ? $classLi : 'private';
2027         $date = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $link['linkdate']);
2028         $link['timestamp'] = $date->getTimestamp();
2029         $taglist = explode(' ', $link['tags']);
2030         uasort($taglist, 'strcasecmp');
2031         $link['taglist'] = $taglist;
2032         $link['shorturl'] = smallHash($link['linkdate']);
2033         // Check for both signs of a note: starting with ? and 7 chars long.
2034         if ($link['url'][0] === '?' &&
2035             strlen($link['url']) === 7) {
2036             $link['url'] = index_url($_SERVER) . $link['url'];
2037         }
2038
2039         $linkDisp[$keys[$i]] = $link;
2040         $i++;
2041     }
2042
2043     // Compute paging navigation
2044     $searchterm = empty($_GET['searchterm']) ? '' : '&searchterm=' . $_GET['searchterm'];
2045     $searchtags = empty($_GET['searchtags']) ? '' : '&searchtags=' . $_GET['searchtags'];
2046     $previous_page_url = '';
2047     if ($i != count($keys)) {
2048         $previous_page_url = '?page=' . ($page+1) . $searchterm . $searchtags;
2049     }
2050     $next_page_url='';
2051     if ($page>1) {
2052         $next_page_url = '?page=' . ($page-1) . $searchterm . $searchtags;
2053     }
2054
2055     $token = '';
2056     if (isLoggedIn()) {
2057         $token = getToken();
2058     }
2059
2060     // Fill all template fields.
2061     $data = array(
2062         'linkcount' => count($LINKSDB),
2063         'previous_page_url' => $previous_page_url,
2064         'next_page_url' => $next_page_url,
2065         'page_current' => $page,
2066         'page_max' => $pagecount,
2067         'result_count' => count($linksToDisplay),
2068         'search_type' => $search_type,
2069         'search_crits' => $search_crits,
2070         'redirector' => empty($GLOBALS['redirector']) ? '' : $GLOBALS['redirector'],  // Optional redirector URL.
2071         'token' => $token,
2072         'links' => $linkDisp,
2073         'tags' => $LINKSDB->allTags(),
2074     );
2075     // FIXME! temporary fix - see #399.
2076     if (!empty($GLOBALS['pagetitle']) && count($linkDisp) == 1) {
2077         $data['pagetitle'] = $GLOBALS['pagetitle'];
2078     }
2079
2080     $pluginManager = PluginManager::getInstance();
2081     $pluginManager->executeHooks('render_linklist', $data, array('loggedin' => isLoggedIn()));
2082
2083     foreach ($data as $key => $value) {
2084         $PAGE->assign($key, $value);
2085     }
2086
2087     return;
2088 }
2089
2090 // Compute the thumbnail for a link.
2091 //
2092 // With a link to the original URL.
2093 // Understands various services (youtube.com...)
2094 // Input: $url = URL for which the thumbnail must be found.
2095 //        $href = if provided, this URL will be followed instead of $url
2096 // Returns an associative array with thumbnail attributes (src,href,width,height,style,alt)
2097 // Some of them may be missing.
2098 // Return an empty array if no thumbnail available.
2099 function computeThumbnail($url,$href=false)
2100 {
2101     if (!$GLOBALS['config']['ENABLE_THUMBNAILS']) return array();
2102     if ($href==false) $href=$url;
2103
2104     // For most hosts, the URL of the thumbnail can be easily deduced from the URL of the link.
2105     // (e.g. http://www.youtube.com/watch?v=spVypYk4kto --->  http://img.youtube.com/vi/spVypYk4kto/default.jpg )
2106     //                                     ^^^^^^^^^^^                                 ^^^^^^^^^^^
2107     $domain = parse_url($url,PHP_URL_HOST);
2108     if ($domain=='youtube.com' || $domain=='www.youtube.com')
2109     {
2110         parse_str(parse_url($url,PHP_URL_QUERY), $params); // Extract video ID and get thumbnail
2111         if (!empty($params['v'])) return array('src'=>'https://img.youtube.com/vi/'.$params['v'].'/default.jpg',
2112                                                'href'=>$href,'width'=>'120','height'=>'90','alt'=>'YouTube thumbnail');
2113     }
2114     if ($domain=='youtu.be') // Youtube short links
2115     {
2116         $path = parse_url($url,PHP_URL_PATH);
2117         return array('src'=>'https://img.youtube.com/vi'.$path.'/default.jpg',
2118                      'href'=>$href,'width'=>'120','height'=>'90','alt'=>'YouTube thumbnail');
2119     }
2120     if ($domain=='pix.toile-libre.org') // pix.toile-libre.org image hosting
2121     {
2122         parse_str(parse_url($url,PHP_URL_QUERY), $params); // Extract image filename.
2123         if (!empty($params) && !empty($params['img'])) return array('src'=>'http://pix.toile-libre.org/upload/thumb/'.urlencode($params['img']),
2124                                                                     'href'=>$href,'style'=>'max-width:120px; max-height:150px','alt'=>'pix.toile-libre.org thumbnail');
2125     }
2126
2127     if ($domain=='imgur.com')
2128     {
2129         $path = parse_url($url,PHP_URL_PATH);
2130         if (startsWith($path,'/a/')) return array(); // Thumbnails for albums are not available.
2131         if (startsWith($path,'/r/')) return array('src'=>'https://i.imgur.com/'.basename($path).'s.jpg',
2132                                                   'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
2133         if (startsWith($path,'/gallery/')) return array('src'=>'https://i.imgur.com'.substr($path,8).'s.jpg',
2134                                                         'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
2135
2136         if (substr_count($path,'/')==1) return array('src'=>'https://i.imgur.com/'.substr($path,1).'s.jpg',
2137                                                      'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
2138     }
2139     if ($domain=='i.imgur.com')
2140     {
2141         $pi = pathinfo(parse_url($url,PHP_URL_PATH));
2142         if (!empty($pi['filename'])) return array('src'=>'https://i.imgur.com/'.$pi['filename'].'s.jpg',
2143                                                   'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
2144     }
2145     if ($domain=='dailymotion.com' || $domain=='www.dailymotion.com')
2146     {
2147         if (strpos($url,'dailymotion.com/video/')!==false)
2148         {
2149             $thumburl=str_replace('dailymotion.com/video/','dailymotion.com/thumbnail/video/',$url);
2150             return array('src'=>$thumburl,
2151                          'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'DailyMotion thumbnail');
2152         }
2153     }
2154     if (endsWith($domain,'.imageshack.us'))
2155     {
2156         $ext=strtolower(pathinfo($url,PATHINFO_EXTENSION));
2157         if ($ext=='jpg' || $ext=='jpeg' || $ext=='png' || $ext=='gif')
2158         {
2159             $thumburl = substr($url,0,strlen($url)-strlen($ext)).'th.'.$ext;
2160             return array('src'=>$thumburl,
2161                          'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'imageshack.us thumbnail');
2162         }
2163     }
2164
2165     // Some other hosts are SLOW AS HELL and usually require an extra HTTP request to get the thumbnail URL.
2166     // So we deport the thumbnail generation in order not to slow down page generation
2167     // (and we also cache the thumbnail)
2168
2169     if (!$GLOBALS['config']['ENABLE_LOCALCACHE']) return array(); // If local cache is disabled, no thumbnails for services which require the use a local cache.
2170
2171     if ($domain=='flickr.com' || endsWith($domain,'.flickr.com')
2172         || $domain=='vimeo.com'
2173         || $domain=='ted.com' || endsWith($domain,'.ted.com')
2174         || $domain=='xkcd.com' || endsWith($domain,'.xkcd.com')
2175     )
2176     {
2177         if ($domain=='vimeo.com')
2178         {   // Make sure this vimeo URL points to a video (/xxx... where xxx is numeric)
2179             $path = parse_url($url,PHP_URL_PATH);
2180             if (!preg_match('!/\d+.+?!',$path)) return array(); // This is not a single video URL.
2181         }
2182         if ($domain=='xkcd.com' || endsWith($domain,'.xkcd.com'))
2183         {   // Make sure this URL points to a single comic (/xxx... where xxx is numeric)
2184             $path = parse_url($url,PHP_URL_PATH);
2185             if (!preg_match('!/\d+.+?!',$path)) return array();
2186         }
2187         if ($domain=='ted.com' || endsWith($domain,'.ted.com'))
2188         {   // Make sure this TED URL points to a video (/talks/...)
2189             $path = parse_url($url,PHP_URL_PATH);
2190             if ("/talks/" !== substr($path,0,7)) return array(); // This is not a single video URL.
2191         }
2192         $sign = hash_hmac('sha256', $url, $GLOBALS['salt']); // We use the salt to sign data (it's random, secret, and specific to each installation)
2193         return array('src'=>index_url($_SERVER).'?do=genthumbnail&hmac='.$sign.'&url='.urlencode($url),
2194                      'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'thumbnail');
2195     }
2196
2197     // For all other, we try to make a thumbnail of links ending with .jpg/jpeg/png/gif
2198     // Technically speaking, we should download ALL links and check their Content-Type to see if they are images.
2199     // But using the extension will do.
2200     $ext=strtolower(pathinfo($url,PATHINFO_EXTENSION));
2201     if ($ext=='jpg' || $ext=='jpeg' || $ext=='png' || $ext=='gif')
2202     {
2203         $sign = hash_hmac('sha256', $url, $GLOBALS['salt']); // We use the salt to sign data (it's random, secret, and specific to each installation)
2204         return array('src'=>index_url($_SERVER).'?do=genthumbnail&hmac='.$sign.'&url='.urlencode($url),
2205                      'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'thumbnail');
2206     }
2207     return array(); // No thumbnail.
2208
2209 }
2210
2211
2212 // Returns the HTML code to display a thumbnail for a link
2213 // with a link to the original URL.
2214 // Understands various services (youtube.com...)
2215 // Input: $url = URL for which the thumbnail must be found.
2216 //        $href = if provided, this URL will be followed instead of $url
2217 // Returns '' if no thumbnail available.
2218 function thumbnail($url,$href=false)
2219 {
2220     $t = computeThumbnail($url,$href);
2221     if (count($t)==0) return ''; // Empty array = no thumbnail for this URL.
2222
2223     $html='<a href="'.escape($t['href']).'"><img src="'.escape($t['src']).'"';
2224     if (!empty($t['width']))  $html.=' width="'.escape($t['width']).'"';
2225     if (!empty($t['height'])) $html.=' height="'.escape($t['height']).'"';
2226     if (!empty($t['style']))  $html.=' style="'.escape($t['style']).'"';
2227     if (!empty($t['alt']))    $html.=' alt="'.escape($t['alt']).'"';
2228     $html.='></a>';
2229     return $html;
2230 }
2231
2232 // Returns the HTML code to display a thumbnail for a link
2233 // for the picture wall (using lazy image loading)
2234 // Understands various services (youtube.com...)
2235 // Input: $url = URL for which the thumbnail must be found.
2236 //        $href = if provided, this URL will be followed instead of $url
2237 // Returns '' if no thumbnail available.
2238 function lazyThumbnail($url,$href=false)
2239 {
2240     $t = computeThumbnail($url,$href);
2241     if (count($t)==0) return ''; // Empty array = no thumbnail for this URL.
2242
2243     $html='<a href="'.escape($t['href']).'">';
2244
2245     // Lazy image
2246     $html.='<img class="b-lazy" src="#" data-src="'.escape($t['src']).'"';
2247
2248     if (!empty($t['width']))  $html.=' width="'.escape($t['width']).'"';
2249     if (!empty($t['height'])) $html.=' height="'.escape($t['height']).'"';
2250     if (!empty($t['style']))  $html.=' style="'.escape($t['style']).'"';
2251     if (!empty($t['alt']))    $html.=' alt="'.escape($t['alt']).'"';
2252     $html.='>';
2253
2254     // No-JavaScript fallback.
2255     $html.='<noscript><img src="'.escape($t['src']).'"';
2256     if (!empty($t['width']))  $html.=' width="'.escape($t['width']).'"';
2257     if (!empty($t['height'])) $html.=' height="'.escape($t['height']).'"';
2258     if (!empty($t['style']))  $html.=' style="'.escape($t['style']).'"';
2259     if (!empty($t['alt']))    $html.=' alt="'.escape($t['alt']).'"';
2260     $html.='></noscript></a>';
2261
2262     return $html;
2263 }
2264
2265
2266 // -----------------------------------------------------------------------------------------------
2267 // Installation
2268 // This function should NEVER be called if the file data/config.php exists.
2269 function install()
2270 {
2271     // On free.fr host, make sure the /sessions directory exists, otherwise login will not work.
2272     if (endsWith($_SERVER['HTTP_HOST'],'.free.fr') && !is_dir($_SERVER['DOCUMENT_ROOT'].'/sessions')) mkdir($_SERVER['DOCUMENT_ROOT'].'/sessions',0705);
2273
2274
2275     // This part makes sure sessions works correctly.
2276     // (Because on some hosts, session.save_path may not be set correctly,
2277     // or we may not have write access to it.)
2278     if (isset($_GET['test_session']) && ( !isset($_SESSION) || !isset($_SESSION['session_tested']) || $_SESSION['session_tested']!='Working'))
2279     {   // Step 2: Check if data in session is correct.
2280         echo '<pre>Sessions do not seem to work correctly on your server.<br>';
2281         echo 'Make sure the variable session.save_path is set correctly in your php config, and that you have write access to it.<br>';
2282         echo 'It currently points to '.session_save_path().'<br>';
2283         echo 'Check that the hostname used to access Shaarli contains a dot. On some browsers, accessing your server via a hostname like \'localhost\' or any custom hostname without a dot causes cookie storage to fail. We recommend accessing your server via it\'s IP address or Fully Qualified Domain Name.<br>';
2284         echo '<br><a href="?">Click to try again.</a></pre>';
2285         die;
2286     }
2287     if (!isset($_SESSION['session_tested']))
2288     {   // Step 1 : Try to store data in session and reload page.
2289         $_SESSION['session_tested'] = 'Working';  // Try to set a variable in session.
2290         header('Location: '.index_url($_SERVER).'?test_session');  // Redirect to check stored data.
2291     }
2292     if (isset($_GET['test_session']))
2293     {   // Step 3: Sessions are OK. Remove test parameter from URL.
2294         header('Location: '.index_url($_SERVER));
2295     }
2296
2297
2298     if (!empty($_POST['setlogin']) && !empty($_POST['setpassword']))
2299     {
2300         $tz = 'UTC';
2301         if (!empty($_POST['continent']) && !empty($_POST['city'])) {
2302             if (isTimeZoneValid($_POST['continent'], $_POST['city'])) {
2303                 $tz = $_POST['continent'].'/'.$_POST['city'];
2304             }
2305         }
2306         $GLOBALS['timezone'] = $tz;
2307         // Everything is ok, let's create config file.
2308         $GLOBALS['login'] = $_POST['setlogin'];
2309         $GLOBALS['salt'] = sha1(uniqid('',true).'_'.mt_rand()); // Salt renders rainbow-tables attacks useless.
2310         $GLOBALS['hash'] = sha1($_POST['setpassword'].$GLOBALS['login'].$GLOBALS['salt']);
2311         $GLOBALS['title'] = (empty($_POST['title']) ? 'Shared links on '.escape(index_url($_SERVER)) : $_POST['title'] );
2312         $GLOBALS['config']['ENABLE_UPDATECHECK'] = !empty($_POST['updateCheck']);
2313         try {
2314             writeConfig($GLOBALS, isLoggedIn());
2315         }
2316         catch(Exception $e) {
2317             error_log(
2318                     'ERROR while writing config file after installation.' . PHP_EOL .
2319                     $e->getMessage()
2320                 );
2321
2322             // TODO: do not handle exceptions/errors in JS.
2323             echo '<script>alert("'. $e->getMessage() .'");document.location=\'?\';</script>';
2324             exit;
2325         }
2326         echo '<script>alert("Shaarli is now configured. Please enter your login/password and start shaaring your links!");document.location=\'?do=login\';</script>';
2327         exit;
2328     }
2329
2330     // Display config form:
2331     list($timezone_form, $timezone_js) = generateTimeZoneForm();
2332     $timezone_html = '';
2333     if ($timezone_form != '') {
2334         $timezone_html = '<tr><td><b>Timezone:</b></td><td>'.$timezone_form.'</td></tr>';
2335     }
2336
2337     $PAGE = new pageBuilder;
2338     $PAGE->assign('timezone_html',$timezone_html);
2339     $PAGE->assign('timezone_js',$timezone_js);
2340     $PAGE->renderPage('install');
2341     exit;
2342 }
2343
2344 /* Because some f*cking services like flickr require an extra HTTP request to get the thumbnail URL,
2345    I have deported the thumbnail URL code generation here, otherwise this would slow down page generation.
2346    The following function takes the URL a link (e.g. a flickr page) and return the proper thumbnail.
2347    This function is called by passing the URL:
2348    http://mywebsite.com/shaarli/?do=genthumbnail&hmac=[HMAC]&url=[URL]
2349    [URL] is the URL of the link (e.g. a flickr page)
2350    [HMAC] is the signature for the [URL] (so that these URL cannot be forged).
2351    The function below will fetch the image from the webservice and store it in the cache.
2352 */
2353 function genThumbnail()
2354 {
2355     // Make sure the parameters in the URL were generated by us.
2356     $sign = hash_hmac('sha256', $_GET['url'], $GLOBALS['salt']);
2357     if ($sign!=$_GET['hmac']) die('Naughty boy!');
2358
2359     // Let's see if we don't already have the image for this URL in the cache.
2360     $thumbname=hash('sha1',$_GET['url']).'.jpg';
2361     if (is_file($GLOBALS['config']['CACHEDIR'].'/'.$thumbname))
2362     {   // We have the thumbnail, just serve it:
2363         header('Content-Type: image/jpeg');
2364         echo file_get_contents($GLOBALS['config']['CACHEDIR'].'/'.$thumbname);
2365         return;
2366     }
2367     // We may also serve a blank image (if service did not respond)
2368     $blankname=hash('sha1',$_GET['url']).'.gif';
2369     if (is_file($GLOBALS['config']['CACHEDIR'].'/'.$blankname))
2370     {
2371         header('Content-Type: image/gif');
2372         echo file_get_contents($GLOBALS['config']['CACHEDIR'].'/'.$blankname);
2373         return;
2374     }
2375
2376     // Otherwise, generate the thumbnail.
2377     $url = $_GET['url'];
2378     $domain = parse_url($url,PHP_URL_HOST);
2379
2380     if ($domain=='flickr.com' || endsWith($domain,'.flickr.com'))
2381     {
2382         // Crude replacement to handle new flickr domain policy (They prefer www. now)
2383         $url = str_replace('http://flickr.com/','http://www.flickr.com/',$url);
2384
2385         // Is this a link to an image, or to a flickr page ?
2386         $imageurl='';
2387         if (endswith(parse_url($url,PHP_URL_PATH),'.jpg'))
2388         {  // This is a direct link to an image. e.g. http://farm1.staticflickr.com/5/5921913_ac83ed27bd_o.jpg
2389             preg_match('!(http://farm\d+\.staticflickr\.com/\d+/\d+_\w+_)\w.jpg!',$url,$matches);
2390             if (!empty($matches[1])) $imageurl=$matches[1].'m.jpg';
2391         }
2392         else // This is a flickr page (html)
2393         {
2394             // Get the flickr html page.
2395             list($headers, $content) = get_http_response($url, 20);
2396             if (strpos($headers[0], '200 OK') !== false)
2397             {
2398                 // flickr now nicely provides the URL of the thumbnail in each flickr page.
2399                 preg_match('!<link rel=\"image_src\" href=\"(.+?)\"!', $content, $matches);
2400                 if (!empty($matches[1])) $imageurl=$matches[1];
2401
2402                 // In albums (and some other pages), the link rel="image_src" is not provided,
2403                 // but flickr provides:
2404                 // <meta property="og:image" content="http://farm4.staticflickr.com/3398/3239339068_25d13535ff_z.jpg" />
2405                 if ($imageurl=='')
2406                 {
2407                     preg_match('!<meta property=\"og:image\" content=\"(.+?)\"!', $content, $matches);
2408                     if (!empty($matches[1])) $imageurl=$matches[1];
2409                 }
2410             }
2411         }
2412
2413         if ($imageurl!='')
2414         {   // Let's download the image.
2415             // Image is 240x120, so 10 seconds to download should be enough.
2416             list($headers, $content) = get_http_response($imageurl, 10);
2417             if (strpos($headers[0], '200 OK') !== false) {
2418                 // Save image to cache.
2419                 file_put_contents($GLOBALS['config']['CACHEDIR'].'/' . $thumbname, $content);
2420                 header('Content-Type: image/jpeg');
2421                 echo $content;
2422                 return;
2423             }
2424         }
2425     }
2426
2427     elseif ($domain=='vimeo.com' )
2428     {
2429         // This is more complex: we have to perform a HTTP request, then parse the result.
2430         // Maybe we should deport this to JavaScript ? Example: http://stackoverflow.com/questions/1361149/get-img-thumbnails-from-vimeo/4285098#4285098
2431         $vid = substr(parse_url($url,PHP_URL_PATH),1);
2432         list($headers, $content) = get_http_response('https://vimeo.com/api/v2/video/'.escape($vid).'.php', 5);
2433         if (strpos($headers[0], '200 OK') !== false) {
2434             $t = unserialize($content);
2435             $imageurl = $t[0]['thumbnail_medium'];
2436             // Then we download the image and serve it to our client.
2437             list($headers, $content) = get_http_response($imageurl, 10);
2438             if (strpos($headers[0], '200 OK') !== false) {
2439                 // Save image to cache.
2440                 file_put_contents($GLOBALS['config']['CACHEDIR'] . '/' . $thumbname, $content);
2441                 header('Content-Type: image/jpeg');
2442                 echo $content;
2443                 return;
2444             }
2445         }
2446     }
2447
2448     elseif ($domain=='ted.com' || endsWith($domain,'.ted.com'))
2449     {
2450         // The thumbnail for TED talks is located in the <link rel="image_src" [...]> tag on that page
2451         // http://www.ted.com/talks/mikko_hypponen_fighting_viruses_defending_the_net.html
2452         // <link rel="image_src" href="http://images.ted.com/images/ted/28bced335898ba54d4441809c5b1112ffaf36781_389x292.jpg" />
2453         list($headers, $content) = get_http_response($url, 5);
2454         if (strpos($headers[0], '200 OK') !== false) {
2455             // Extract the link to the thumbnail
2456             preg_match('!link rel="image_src" href="(http://images.ted.com/images/ted/.+_\d+x\d+\.jpg)"!', $content, $matches);
2457             if (!empty($matches[1]))
2458             {   // Let's download the image.
2459                 $imageurl=$matches[1];
2460                 // No control on image size, so wait long enough
2461                 list($headers, $content) = get_http_response($imageurl, 20);
2462                 if (strpos($headers[0], '200 OK') !== false) {
2463                     $filepath=$GLOBALS['config']['CACHEDIR'].'/'.$thumbname;
2464                     file_put_contents($filepath, $content); // Save image to cache.
2465                     if (resizeImage($filepath))
2466                     {
2467                         header('Content-Type: image/jpeg');
2468                         echo file_get_contents($filepath);
2469                         return;
2470                     }
2471                 }
2472             }
2473         }
2474     }
2475
2476     elseif ($domain=='xkcd.com' || endsWith($domain,'.xkcd.com'))
2477     {
2478         // There is no thumbnail available for xkcd comics, so download the whole image and resize it.
2479         // http://xkcd.com/327/
2480         // <img src="http://imgs.xkcd.com/comics/exploits_of_a_mom.png" title="<BLABLA>" alt="<BLABLA>" />
2481         list($headers, $content) = get_http_response($url, 5);
2482         if (strpos($headers[0], '200 OK') !== false) {
2483             // Extract the link to the thumbnail
2484             preg_match('!<img src="(http://imgs.xkcd.com/comics/.*)" title="[^s]!', $content, $matches);
2485             if (!empty($matches[1]))
2486             {   // Let's download the image.
2487                 $imageurl=$matches[1];
2488                 // No control on image size, so wait long enough
2489                 list($headers, $content) = get_http_response($imageurl, 20);
2490                 if (strpos($headers[0], '200 OK') !== false) {
2491                     $filepath=$GLOBALS['config']['CACHEDIR'].'/'.$thumbname;
2492                     // Save image to cache.
2493                     file_put_contents($filepath, $content);
2494                     if (resizeImage($filepath))
2495                     {
2496                         header('Content-Type: image/jpeg');
2497                         echo file_get_contents($filepath);
2498                         return;
2499                     }
2500                 }
2501             }
2502         }
2503     }
2504
2505     else
2506     {
2507         // For all other domains, we try to download the image and make a thumbnail.
2508         // We allow 30 seconds max to download (and downloads are limited to 4 Mb)
2509         list($headers, $content) = get_http_response($url, 30);
2510         if (strpos($headers[0], '200 OK') !== false) {
2511             $filepath=$GLOBALS['config']['CACHEDIR'].'/'.$thumbname;
2512             // Save image to cache.
2513             file_put_contents($filepath, $content);
2514             if (resizeImage($filepath))
2515             {
2516                 header('Content-Type: image/jpeg');
2517                 echo file_get_contents($filepath);
2518                 return;
2519             }
2520         }
2521     }
2522
2523
2524     // Otherwise, return an empty image (8x8 transparent gif)
2525     $blankgif = base64_decode('R0lGODlhCAAIAIAAAP///////yH5BAEKAAEALAAAAAAIAAgAAAIHjI+py+1dAAA7');
2526     file_put_contents($GLOBALS['config']['CACHEDIR'].'/'.$blankname,$blankgif); // Also put something in cache so that this URL is not requested twice.
2527     header('Content-Type: image/gif');
2528     echo $blankgif;
2529 }
2530
2531 // Make a thumbnail of the image (to width: 120 pixels)
2532 // Returns true if success, false otherwise.
2533 function resizeImage($filepath)
2534 {
2535     if (!function_exists('imagecreatefromjpeg')) return false; // GD not present: no thumbnail possible.
2536
2537     // Trick: some stupid people rename GIF as JPEG... or else.
2538     // So we really try to open each image type whatever the extension is.
2539     $header=file_get_contents($filepath,false,NULL,0,256); // Read first 256 bytes and try to sniff file type.
2540     $im=false;
2541     $i=strpos($header,'GIF8'); if (($i!==false) && ($i==0)) $im = imagecreatefromgif($filepath); // Well this is crude, but it should be enough.
2542     $i=strpos($header,'PNG'); if (($i!==false) && ($i==1)) $im = imagecreatefrompng($filepath);
2543     $i=strpos($header,'JFIF'); if ($i!==false) $im = imagecreatefromjpeg($filepath);
2544     if (!$im) return false;  // Unable to open image (corrupted or not an image)
2545     $w = imagesx($im);
2546     $h = imagesy($im);
2547     $ystart = 0; $yheight=$h;
2548     if ($h>$w) { $ystart= ($h/2)-($w/2); $yheight=$w/2; }
2549     $nw = 120;   // Desired width
2550     $nh = min(floor(($h*$nw)/$w),120); // Compute new width/height, but maximum 120 pixels height.
2551     // Resize image:
2552     $im2 = imagecreatetruecolor($nw,$nh);
2553     imagecopyresampled($im2, $im, 0, 0, 0, $ystart, $nw, $nh, $w, $yheight);
2554     imageinterlace($im2,true); // For progressive JPEG.
2555     $tempname=$filepath.'_TEMP.jpg';
2556     imagejpeg($im2, $tempname, 90);
2557     imagedestroy($im);
2558     imagedestroy($im2);
2559     unlink($filepath);
2560     rename($tempname,$filepath);  // Overwrite original picture with thumbnail.
2561     return true;
2562 }
2563
2564 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=genthumbnail')) { genThumbnail(); exit; }  // Thumbnail generation/cache does not need the link database.
2565 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=rss')) { showRSS(); exit; }
2566 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=atom')) { showATOM(); exit; }
2567 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=dailyrss')) { showDailyRSS(); exit; }
2568 if (!isset($_SESSION['LINKS_PER_PAGE'])) $_SESSION['LINKS_PER_PAGE']=$GLOBALS['config']['LINKS_PER_PAGE'];
2569 renderPage();
2570 ?>