]> git.immae.eu Git - github/shaarli/Shaarli.git/blob - index.php
Bugfixes on link deletion, and use a GET form
[github/shaarli/Shaarli.git] / index.php
1 <?php
2 /**
3 * Shaarli v0.8.0 - Shaare your links...
4 *
5 * The personal, minimalist, super-fast, database free, bookmarking service.
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 * PHP configuration
27 */
28 define('shaarli_version', '0.8.0');
29
30 // http://server.com/x/shaarli --> /shaarli/
31 define('WEB_PATH', substr($_SERVER['REQUEST_URI'], 0, 1+strrpos($_SERVER['REQUEST_URI'], '/', 0)));
32
33 // High execution time in case of problematic imports/exports.
34 ini_set('max_input_time','60');
35
36 // Try to set max upload file size and read
37 ini_set('memory_limit', '128M');
38 ini_set('post_max_size', '16M');
39 ini_set('upload_max_filesize', '16M');
40
41 // See all error except warnings
42 error_reporting(E_ALL^E_WARNING);
43 // See all errors (for debugging only)
44 //error_reporting(-1);
45
46
47 // 3rd-party libraries
48 if (! file_exists(__DIR__ . '/vendor/autoload.php')) {
49 header('Content-Type: text/plain; charset=utf-8');
50 echo "Error: missing Composer configuration\n\n"
51 ."If you installed Shaarli through Git or using the development branch,\n"
52 ."please refer to the installation documentation to install PHP"
53 ." dependencies using Composer:\n"
54 ."- https://github.com/shaarli/Shaarli/wiki/Server-requirements\n"
55 ."- https://github.com/shaarli/Shaarli/wiki/Download-and-Installation";
56 exit;
57 }
58 require_once 'inc/rain.tpl.class.php';
59 require_once __DIR__ . '/vendor/autoload.php';
60
61 // Shaarli library
62 require_once 'application/ApplicationUtils.php';
63 require_once 'application/Cache.php';
64 require_once 'application/CachedPage.php';
65 require_once 'application/config/ConfigManager.php';
66 require_once 'application/config/ConfigPlugin.php';
67 require_once 'application/FeedBuilder.php';
68 require_once 'application/FileUtils.php';
69 require_once 'application/HttpUtils.php';
70 require_once 'application/Languages.php';
71 require_once 'application/LinkDB.php';
72 require_once 'application/LinkFilter.php';
73 require_once 'application/LinkUtils.php';
74 require_once 'application/NetscapeBookmarkUtils.php';
75 require_once 'application/PageBuilder.php';
76 require_once 'application/TimeZone.php';
77 require_once 'application/Url.php';
78 require_once 'application/Utils.php';
79 require_once 'application/PluginManager.php';
80 require_once 'application/Router.php';
81 require_once 'application/Updater.php';
82
83 // Ensure the PHP version is supported
84 try {
85 ApplicationUtils::checkPHPVersion('5.3', PHP_VERSION);
86 } catch(Exception $exc) {
87 header('Content-Type: text/plain; charset=utf-8');
88 echo $exc->getMessage();
89 exit;
90 }
91
92 // Force cookie path (but do not change lifetime)
93 $cookie = session_get_cookie_params();
94 $cookiedir = '';
95 if (dirname($_SERVER['SCRIPT_NAME']) != '/') {
96 $cookiedir = dirname($_SERVER["SCRIPT_NAME"]).'/';
97 }
98 // Set default cookie expiration and path.
99 session_set_cookie_params($cookie['lifetime'], $cookiedir, $_SERVER['SERVER_NAME']);
100 // Set session parameters on server side.
101 // If the user does not access any page within this time, his/her session is considered expired.
102 define('INACTIVITY_TIMEOUT', 3600); // in seconds.
103 // Use cookies to store session.
104 ini_set('session.use_cookies', 1);
105 // Force cookies for session (phpsessionID forbidden in URL).
106 ini_set('session.use_only_cookies', 1);
107 // Prevent PHP form using sessionID in URL if cookies are disabled.
108 ini_set('session.use_trans_sid', false);
109
110 session_name('shaarli');
111 // Start session if needed (Some server auto-start sessions).
112 if (session_id() == '') {
113 session_start();
114 }
115
116 // Regenerate session ID if invalid or not defined in cookie.
117 if (isset($_COOKIE['shaarli']) && !is_session_id_valid($_COOKIE['shaarli'])) {
118 session_regenerate_id(true);
119 $_COOKIE['shaarli'] = session_id();
120 }
121
122 $conf = new ConfigManager();
123 $conf->setEmpty('general.timezone', date_default_timezone_get());
124 $conf->setEmpty('general.title', 'Shared links on '. escape(index_url($_SERVER)));
125 RainTPL::$tpl_dir = $conf->get('resource.raintpl_tpl'); // template directory
126 RainTPL::$cache_dir = $conf->get('resource.raintpl_tmp'); // cache directory
127
128 $pluginManager = new PluginManager($conf);
129 $pluginManager->load($conf->get('general.enabled_plugins'));
130
131 date_default_timezone_set($conf->get('general.timezone', 'UTC'));
132
133 ob_start(); // Output buffering for the page cache.
134
135 // In case stupid admin has left magic_quotes enabled in php.ini:
136 if (get_magic_quotes_gpc())
137 {
138 function stripslashes_deep($value) { $value = is_array($value) ? array_map('stripslashes_deep', $value) : stripslashes($value); return $value; }
139 $_POST = array_map('stripslashes_deep', $_POST);
140 $_GET = array_map('stripslashes_deep', $_GET);
141 $_COOKIE = array_map('stripslashes_deep', $_COOKIE);
142 }
143
144 // Prevent caching on client side or proxy: (yes, it's ugly)
145 header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
146 header("Cache-Control: no-store, no-cache, must-revalidate");
147 header("Cache-Control: post-check=0, pre-check=0", false);
148 header("Pragma: no-cache");
149
150 if (! is_file($conf->getConfigFileExt())) {
151 // Ensure Shaarli has proper access to its resources
152 $errors = ApplicationUtils::checkResourcePermissions($conf);
153
154 if ($errors != array()) {
155 $message = '<p>Insufficient permissions:</p><ul>';
156
157 foreach ($errors as $error) {
158 $message .= '<li>'.$error.'</li>';
159 }
160 $message .= '</ul>';
161
162 header('Content-Type: text/html; charset=utf-8');
163 echo $message;
164 exit;
165 }
166
167 // Display the installation form if no existing config is found
168 install($conf);
169 }
170
171 // a token depending of deployment salt, user password, and the current ip
172 define('STAY_SIGNED_IN_TOKEN', sha1($conf->get('credentials.hash') . $_SERVER['REMOTE_ADDR'] . $conf->get('credentials.salt')));
173
174 // Sniff browser language and set date format accordingly.
175 if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
176 autoLocale($_SERVER['HTTP_ACCEPT_LANGUAGE']);
177 }
178 header('Content-Type: text/html; charset=utf-8'); // We use UTF-8 for proper international characters handling.
179
180 /**
181 * Checking session state (i.e. is the user still logged in)
182 *
183 * @param ConfigManager $conf The configuration manager.
184 *
185 * @return bool: true if the user is logged in, false otherwise.
186 */
187 function setup_login_state($conf)
188 {
189 if ($conf->get('security.open_shaarli')) {
190 return true;
191 }
192 $userIsLoggedIn = false; // By default, we do not consider the user as logged in;
193 $loginFailure = false; // If set to true, every attempt to authenticate the user will fail. This indicates that an important condition isn't met.
194 if (! $conf->exists('credentials.login')) {
195 $userIsLoggedIn = false; // Shaarli is not configured yet.
196 $loginFailure = true;
197 }
198 if (isset($_COOKIE['shaarli_staySignedIn']) &&
199 $_COOKIE['shaarli_staySignedIn']===STAY_SIGNED_IN_TOKEN &&
200 !$loginFailure)
201 {
202 fillSessionInfo($conf);
203 $userIsLoggedIn = true;
204 }
205 // If session does not exist on server side, or IP address has changed, or session has expired, logout.
206 if (empty($_SESSION['uid'])
207 || ($conf->get('security.session_protection_disabled') == false && $_SESSION['ip'] != allIPs())
208 || time() >= $_SESSION['expires_on'])
209 {
210 logout();
211 $userIsLoggedIn = false;
212 $loginFailure = true;
213 }
214 if (!empty($_SESSION['longlastingsession'])) {
215 $_SESSION['expires_on']=time()+$_SESSION['longlastingsession']; // In case of "Stay signed in" checked.
216 }
217 else {
218 $_SESSION['expires_on']=time()+INACTIVITY_TIMEOUT; // Standard session expiration date.
219 }
220 if (!$loginFailure) {
221 $userIsLoggedIn = true;
222 }
223
224 return $userIsLoggedIn;
225 }
226 $userIsLoggedIn = setup_login_state($conf);
227
228 /**
229 * PubSubHubbub protocol support (if enabled) [UNTESTED]
230 * (Source: http://aldarone.fr/les-flux-rss-shaarli-et-pubsubhubbub/ )
231 *
232 * @param ConfigManager $conf Configuration Manager instance.
233 */
234 function pubsubhub($conf)
235 {
236 $pshUrl = $conf->get('config.PUBSUBHUB_URL');
237 if (!empty($pshUrl))
238 {
239 include_once './publisher.php';
240 $p = new Publisher($pshUrl);
241 $topic_url = array (
242 index_url($_SERVER).'?do=atom',
243 index_url($_SERVER).'?do=rss'
244 );
245 $p->publish_update($topic_url);
246 }
247 }
248
249 // ------------------------------------------------------------------------------------------
250 // Session management
251
252 // Returns the IP address of the client (Used to prevent session cookie hijacking.)
253 function allIPs()
254 {
255 $ip = $_SERVER['REMOTE_ADDR'];
256 // Then we use more HTTP headers to prevent session hijacking from users behind the same proxy.
257 if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) { $ip=$ip.'_'.$_SERVER['HTTP_X_FORWARDED_FOR']; }
258 if (isset($_SERVER['HTTP_CLIENT_IP'])) { $ip=$ip.'_'.$_SERVER['HTTP_CLIENT_IP']; }
259 return $ip;
260 }
261
262 /**
263 * Load user session.
264 *
265 * @param ConfigManager $conf Configuration Manager instance.
266 */
267 function fillSessionInfo($conf)
268 {
269 $_SESSION['uid'] = sha1(uniqid('',true).'_'.mt_rand()); // Generate unique random number (different than phpsessionid)
270 $_SESSION['ip']=allIPs(); // We store IP address(es) of the client to make sure session is not hijacked.
271 $_SESSION['username']= $conf->get('credentials.login');
272 $_SESSION['expires_on']=time()+INACTIVITY_TIMEOUT; // Set session expiration.
273 }
274
275 /**
276 * Check that user/password is correct.
277 *
278 * @param string $login Username
279 * @param string $password User password
280 * @param ConfigManager $conf Configuration Manager instance.
281 *
282 * @return bool: authentication successful or not.
283 */
284 function check_auth($login, $password, $conf)
285 {
286 $hash = sha1($password . $login . $conf->get('credentials.salt'));
287 if ($login == $conf->get('credentials.login') && $hash == $conf->get('credentials.hash'))
288 { // Login/password is correct.
289 fillSessionInfo($conf);
290 logm($conf->get('resource.log'), $_SERVER['REMOTE_ADDR'], 'Login successful');
291 return true;
292 }
293 logm($conf->get('resource.log'), $_SERVER['REMOTE_ADDR'], 'Login failed for user '.$login);
294 return false;
295 }
296
297 // Returns true if the user is logged in.
298 function isLoggedIn()
299 {
300 global $userIsLoggedIn;
301 return $userIsLoggedIn;
302 }
303
304 // Force logout.
305 function logout() {
306 if (isset($_SESSION)) {
307 unset($_SESSION['uid']);
308 unset($_SESSION['ip']);
309 unset($_SESSION['username']);
310 unset($_SESSION['privateonly']);
311 }
312 setcookie('shaarli_staySignedIn', FALSE, 0, WEB_PATH);
313 }
314
315
316 // ------------------------------------------------------------------------------------------
317 // Brute force protection system
318 // Several consecutive failed logins will ban the IP address for 30 minutes.
319 if (!is_file($conf->get('resource.ban_file', 'data/ipbans.php'))) {
320 // FIXME! globals
321 file_put_contents(
322 $conf->get('resource.ban_file', 'data/ipbans.php'),
323 "<?php\n\$GLOBALS['IPBANS']=".var_export(array('FAILURES'=>array(),'BANS'=>array()),true).";\n?>"
324 );
325 }
326 include $conf->get('resource.ban_file', 'data/ipbans.php');
327 /**
328 * Signal a failed login. Will ban the IP if too many failures:
329 *
330 * @param ConfigManager $conf Configuration Manager instance.
331 */
332 function ban_loginFailed($conf)
333 {
334 $ip = $_SERVER['REMOTE_ADDR'];
335 $trusted = $conf->get('security.trusted_proxies', array());
336 if (in_array($ip, $trusted)) {
337 $ip = getIpAddressFromProxy($_SERVER, $trusted);
338 if (!$ip) {
339 return;
340 }
341 }
342 $gb = $GLOBALS['IPBANS'];
343 if (! isset($gb['FAILURES'][$ip])) {
344 $gb['FAILURES'][$ip]=0;
345 }
346 $gb['FAILURES'][$ip]++;
347 if ($gb['FAILURES'][$ip] > ($conf->get('security.ban_after') - 1))
348 {
349 $gb['BANS'][$ip] = time() + $conf->get('security.ban_after', 1800);
350 logm($conf->get('resource.log'), $_SERVER['REMOTE_ADDR'], 'IP address banned from login');
351 }
352 $GLOBALS['IPBANS'] = $gb;
353 file_put_contents(
354 $conf->get('resource.ban_file', 'data/ipbans.php'),
355 "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>"
356 );
357 }
358
359 /**
360 * Signals a successful login. Resets failed login counter.
361 *
362 * @param ConfigManager $conf Configuration Manager instance.
363 */
364 function ban_loginOk($conf)
365 {
366 $ip = $_SERVER['REMOTE_ADDR'];
367 $gb = $GLOBALS['IPBANS'];
368 unset($gb['FAILURES'][$ip]); unset($gb['BANS'][$ip]);
369 $GLOBALS['IPBANS'] = $gb;
370 file_put_contents(
371 $conf->get('resource.ban_file', 'data/ipbans.php'),
372 "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>"
373 );
374 }
375
376 /**
377 * Checks if the user CAN login. If 'true', the user can try to login.
378 *
379 * @param ConfigManager $conf Configuration Manager instance.
380 *
381 * @return bool: true if the user is allowed to login.
382 */
383 function ban_canLogin($conf)
384 {
385 $ip=$_SERVER["REMOTE_ADDR"]; $gb=$GLOBALS['IPBANS'];
386 if (isset($gb['BANS'][$ip]))
387 {
388 // User is banned. Check if the ban has expired:
389 if ($gb['BANS'][$ip]<=time())
390 { // Ban expired, user can try to login again.
391 logm($conf->get('resource.log'), $_SERVER['REMOTE_ADDR'], 'Ban lifted.');
392 unset($gb['FAILURES'][$ip]); unset($gb['BANS'][$ip]);
393 file_put_contents(
394 $conf->get('resource.ban_file', 'data/ipbans.php'),
395 "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>"
396 );
397 return true; // Ban has expired, user can login.
398 }
399 return false; // User is banned.
400 }
401 return true; // User is not banned.
402 }
403
404 // ------------------------------------------------------------------------------------------
405 // Process login form: Check if login/password is correct.
406 if (isset($_POST['login']))
407 {
408 if (!ban_canLogin($conf)) die('I said: NO. You are banned for the moment. Go away.');
409 if (isset($_POST['password'])
410 && tokenOk($_POST['token'])
411 && (check_auth($_POST['login'], $_POST['password'], $conf))
412 ) { // Login/password is OK.
413 ban_loginOk($conf);
414 // If user wants to keep the session cookie even after the browser closes:
415 if (!empty($_POST['longlastingsession']))
416 {
417 setcookie('shaarli_staySignedIn', STAY_SIGNED_IN_TOKEN, time()+31536000, WEB_PATH);
418 $_SESSION['longlastingsession']=31536000; // (31536000 seconds = 1 year)
419 $_SESSION['expires_on']=time()+$_SESSION['longlastingsession']; // Set session expiration on server-side.
420
421 $cookiedir = ''; if(dirname($_SERVER['SCRIPT_NAME'])!='/') $cookiedir=dirname($_SERVER["SCRIPT_NAME"]).'/';
422 session_set_cookie_params($_SESSION['longlastingsession'],$cookiedir,$_SERVER['SERVER_NAME']); // Set session cookie expiration on client side
423 // Note: Never forget the trailing slash on the cookie path!
424 session_regenerate_id(true); // Send cookie with new expiration date to browser.
425 }
426 else // Standard session expiration (=when browser closes)
427 {
428 $cookiedir = ''; if(dirname($_SERVER['SCRIPT_NAME'])!='/') $cookiedir=dirname($_SERVER["SCRIPT_NAME"]).'/';
429 session_set_cookie_params(0,$cookiedir,$_SERVER['SERVER_NAME']); // 0 means "When browser closes"
430 session_regenerate_id(true);
431 }
432
433 // Optional redirect after login:
434 if (isset($_GET['post'])) {
435 $uri = '?post='. urlencode($_GET['post']);
436 foreach (array('description', 'source', 'title') as $param) {
437 if (!empty($_GET[$param])) {
438 $uri .= '&'.$param.'='.urlencode($_GET[$param]);
439 }
440 }
441 header('Location: '. $uri);
442 exit;
443 }
444
445 if (isset($_GET['edit_link'])) {
446 header('Location: ?edit_link='. escape($_GET['edit_link']));
447 exit;
448 }
449
450 if (isset($_POST['returnurl'])) {
451 // Prevent loops over login screen.
452 if (strpos($_POST['returnurl'], 'do=login') === false) {
453 header('Location: '. generateLocation($_POST['returnurl'], $_SERVER['HTTP_HOST']));
454 exit;
455 }
456 }
457 header('Location: ?'); exit;
458 }
459 else
460 {
461 ban_loginFailed($conf);
462 $redir = '&username='. $_POST['login'];
463 if (isset($_GET['post'])) {
464 $redir .= '&post=' . urlencode($_GET['post']);
465 foreach (array('description', 'source', 'title') as $param) {
466 if (!empty($_GET[$param])) {
467 $redir .= '&' . $param . '=' . urlencode($_GET[$param]);
468 }
469 }
470 }
471 echo '<script>alert("Wrong login/password.");document.location=\'?do=login'.$redir.'\';</script>'; // Redirect to login screen.
472 exit;
473 }
474 }
475
476 // ------------------------------------------------------------------------------------------
477 // Misc utility functions:
478
479 // Convert post_max_size/upload_max_filesize (e.g. '16M') parameters to bytes.
480 function return_bytes($val)
481 {
482 $val = trim($val); $last=strtolower($val[strlen($val)-1]);
483 switch($last)
484 {
485 case 'g': $val *= 1024;
486 case 'm': $val *= 1024;
487 case 'k': $val *= 1024;
488 }
489 return $val;
490 }
491
492 // Try to determine max file size for uploads (POST).
493 // Returns an integer (in bytes)
494 function getMaxFileSize()
495 {
496 $size1 = return_bytes(ini_get('post_max_size'));
497 $size2 = return_bytes(ini_get('upload_max_filesize'));
498 // Return the smaller of two:
499 $maxsize = min($size1,$size2);
500 // FIXME: Then convert back to readable notations ? (e.g. 2M instead of 2000000)
501 return $maxsize;
502 }
503
504 // ------------------------------------------------------------------------------------------
505 // Token management for XSRF protection
506 // Token should be used in any form which acts on data (create,update,delete,import...).
507 if (!isset($_SESSION['tokens'])) $_SESSION['tokens']=array(); // Token are attached to the session.
508
509 /**
510 * Returns a token.
511 *
512 * @param ConfigManager $conf Configuration Manager instance.
513 *
514 * @return string token.
515 */
516 function getToken($conf)
517 {
518 $rnd = sha1(uniqid('', true) .'_'. mt_rand() . $conf->get('credentials.salt')); // We generate a random string.
519 $_SESSION['tokens'][$rnd]=1; // Store it on the server side.
520 return $rnd;
521 }
522
523 // Tells if a token is OK. Using this function will destroy the token.
524 // true=token is OK.
525 function tokenOk($token)
526 {
527 if (isset($_SESSION['tokens'][$token]))
528 {
529 unset($_SESSION['tokens'][$token]); // Token is used: destroy it.
530 return true; // Token is OK.
531 }
532 return false; // Wrong token, or already used.
533 }
534
535 /**
536 * Daily RSS feed: 1 RSS entry per day giving all the links on that day.
537 * Gives the last 7 days (which have links).
538 * This RSS feed cannot be filtered.
539 *
540 * @param ConfigManager $conf Configuration Manager instance.
541 */
542 function showDailyRSS($conf) {
543 // Cache system
544 $query = $_SERVER['QUERY_STRING'];
545 $cache = new CachedPage(
546 $conf->get('config.PAGE_CACHE'),
547 page_url($_SERVER),
548 startsWith($query,'do=dailyrss') && !isLoggedIn()
549 );
550 $cached = $cache->cachedVersion();
551 if (!empty($cached)) {
552 echo $cached;
553 exit;
554 }
555
556 // If cached was not found (or not usable), then read the database and build the response:
557 // Read links from database (and filter private links if used it not logged in).
558 $LINKSDB = new LinkDB(
559 $conf->get('resource.datastore'),
560 isLoggedIn(),
561 $conf->get('privacy.hide_public_links'),
562 $conf->get('redirector.url'),
563 $conf->get('redirector.encode_url')
564 );
565
566 /* Some Shaarlies may have very few links, so we need to look
567 back in time (rsort()) until we have enough days ($nb_of_days).
568 */
569 $linkdates = array();
570 foreach ($LINKSDB as $linkdate => $value) {
571 $linkdates[] = $linkdate;
572 }
573 rsort($linkdates);
574 $nb_of_days = 7; // We take 7 days.
575 $today = date('Ymd');
576 $days = array();
577
578 foreach ($linkdates as $linkdate) {
579 $day = substr($linkdate, 0, 8); // Extract day (without time)
580 if (strcmp($day,$today) < 0) {
581 if (empty($days[$day])) {
582 $days[$day] = array();
583 }
584 $days[$day][] = $linkdate;
585 }
586
587 if (count($days) > $nb_of_days) {
588 break; // Have we collected enough days?
589 }
590 }
591
592 // Build the RSS feed.
593 header('Content-Type: application/rss+xml; charset=utf-8');
594 $pageaddr = escape(index_url($_SERVER));
595 echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0">';
596 echo '<channel>';
597 echo '<title>Daily - '. $conf->get('general.title') . '</title>';
598 echo '<link>'. $pageaddr .'</link>';
599 echo '<description>Daily shared links</description>';
600 echo '<language>en-en</language>';
601 echo '<copyright>'. $pageaddr .'</copyright>'. PHP_EOL;
602
603 // For each day.
604 foreach ($days as $day => $linkdates) {
605 $dayDate = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $day.'_000000');
606 $absurl = escape(index_url($_SERVER).'?do=daily&day='.$day); // Absolute URL of the corresponding "Daily" page.
607
608 // Build the HTML body of this RSS entry.
609 $links = array();
610
611 // We pre-format some fields for proper output.
612 foreach ($linkdates as $linkdate) {
613 $l = $LINKSDB[$linkdate];
614 $l['formatedDescription'] = format_description($l['description'], $conf->get('redirector.url'));
615 $l['thumbnail'] = thumbnail($conf, $l['url']);
616 $l_date = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $l['linkdate']);
617 $l['timestamp'] = $l_date->getTimestamp();
618 if (startsWith($l['url'], '?')) {
619 $l['url'] = index_url($_SERVER) . $l['url']; // make permalink URL absolute
620 }
621 $links[$linkdate] = $l;
622 }
623
624 // Then build the HTML for this day:
625 $tpl = new RainTPL;
626 $tpl->assign('title', $conf->get('general.title'));
627 $tpl->assign('daydate', $dayDate->getTimestamp());
628 $tpl->assign('absurl', $absurl);
629 $tpl->assign('links', $links);
630 $tpl->assign('rssdate', escape($dayDate->format(DateTime::RSS)));
631 $tpl->assign('hide_timestamps', $conf->get('privacy.hide_timestamps', false));
632 $html = $tpl->draw('dailyrss', $return_string=true);
633
634 echo $html . PHP_EOL;
635 }
636 echo '</channel></rss><!-- Cached version of '. escape(page_url($_SERVER)) .' -->';
637
638 $cache->cache(ob_get_contents());
639 ob_end_flush();
640 exit;
641 }
642
643 /**
644 * Show the 'Daily' page.
645 *
646 * @param PageBuilder $pageBuilder Template engine wrapper.
647 * @param LinkDB $LINKSDB LinkDB instance.
648 * @param ConfigManager $conf Configuration Manager instance.
649 * @param PluginManager $pluginManager Plugin Manager instane.
650 */
651 function showDaily($pageBuilder, $LINKSDB, $conf, $pluginManager)
652 {
653 $day=date('Ymd',strtotime('-1 day')); // Yesterday, in format YYYYMMDD.
654 if (isset($_GET['day'])) $day=$_GET['day'];
655
656 $days = $LINKSDB->days();
657 $i = array_search($day,$days);
658 if ($i===false) { $i=count($days)-1; $day=$days[$i]; }
659 $previousday='';
660 $nextday='';
661 if ($i!==false)
662 {
663 if ($i>=1) $previousday=$days[$i-1];
664 if ($i<count($days)-1) $nextday=$days[$i+1];
665 }
666
667 try {
668 $linksToDisplay = $LINKSDB->filterDay($day);
669 } catch (Exception $exc) {
670 error_log($exc);
671 $linksToDisplay = array();
672 }
673
674 // We pre-format some fields for proper output.
675 foreach($linksToDisplay as $key=>$link)
676 {
677
678 $taglist = explode(' ',$link['tags']);
679 uasort($taglist, 'strcasecmp');
680 $linksToDisplay[$key]['taglist']=$taglist;
681 $linksToDisplay[$key]['formatedDescription'] = format_description($link['description'], $conf->get('redirector.url'));
682 $linksToDisplay[$key]['thumbnail'] = thumbnail($conf, $link['url']);
683 $date = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $link['linkdate']);
684 $linksToDisplay[$key]['timestamp'] = $date->getTimestamp();
685 }
686
687 /* We need to spread the articles on 3 columns.
688 I did not want to use a JavaScript lib like http://masonry.desandro.com/
689 so I manually spread entries with a simple method: I roughly evaluate the
690 height of a div according to title and description length.
691 */
692 $columns=array(array(),array(),array()); // Entries to display, for each column.
693 $fill=array(0,0,0); // Rough estimate of columns fill.
694 foreach($linksToDisplay as $key=>$link)
695 {
696 // Roughly estimate length of entry (by counting characters)
697 // Title: 30 chars = 1 line. 1 line is 30 pixels height.
698 // Description: 836 characters gives roughly 342 pixel height.
699 // This is not perfect, but it's usually OK.
700 $length=strlen($link['title'])+(342*strlen($link['description']))/836;
701 if ($link['thumbnail']) $length +=100; // 1 thumbnails roughly takes 100 pixels height.
702 // Then put in column which is the less filled:
703 $smallest=min($fill); // find smallest value in array.
704 $index=array_search($smallest,$fill); // find index of this smallest value.
705 array_push($columns[$index],$link); // Put entry in this column.
706 $fill[$index]+=$length;
707 }
708
709 $dayDate = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $day.'_000000');
710 $data = array(
711 'linksToDisplay' => $linksToDisplay,
712 'cols' => $columns,
713 'day' => $dayDate->getTimestamp(),
714 'previousday' => $previousday,
715 'nextday' => $nextday,
716 );
717
718 $pluginManager->executeHooks('render_daily', $data, array('loggedin' => isLoggedIn()));
719
720 foreach ($data as $key => $value) {
721 $pageBuilder->assign($key, $value);
722 }
723
724 $pageBuilder->renderPage('daily');
725 exit;
726 }
727
728 /**
729 * Renders the linklist
730 *
731 * @param pageBuilder $PAGE pageBuilder instance.
732 * @param LinkDB $LINKSDB LinkDB instance.
733 * @param ConfigManager $conf Configuration Manager instance.
734 * @param PluginManager $pluginManager Plugin Manager instance.
735 */
736 function showLinkList($PAGE, $LINKSDB, $conf, $pluginManager) {
737 buildLinkList($PAGE,$LINKSDB, $conf, $pluginManager); // Compute list of links to display
738 $PAGE->renderPage('linklist');
739 }
740
741 /**
742 * Render HTML page (according to URL parameters and user rights)
743 *
744 * @param ConfigManager $conf Configuration Manager instance.
745 * @param PluginManager $pluginManager Plugin Manager instance,
746 */
747 function renderPage($conf, $pluginManager)
748 {
749 $LINKSDB = new LinkDB(
750 $conf->get('resource.datastore'),
751 isLoggedIn(),
752 $conf->get('privacy.hide_public_links'),
753 $conf->get('redirector.url'),
754 $conf->get('redirector.encode_url')
755 );
756
757 $updater = new Updater(
758 read_updates_file($conf->get('resource.updates')),
759 $LINKSDB,
760 $conf,
761 isLoggedIn()
762 );
763 try {
764 $newUpdates = $updater->update();
765 if (! empty($newUpdates)) {
766 write_updates_file(
767 $conf->get('resource.updates'),
768 $updater->getDoneUpdates()
769 );
770 }
771 }
772 catch(Exception $e) {
773 die($e->getMessage());
774 }
775
776 $PAGE = new PageBuilder($conf);
777 $PAGE->assign('linkcount', count($LINKSDB));
778 $PAGE->assign('privateLinkcount', count_private($LINKSDB));
779 $PAGE->assign('plugin_errors', $pluginManager->getErrors());
780
781 // Determine which page will be rendered.
782 $query = (isset($_SERVER['QUERY_STRING'])) ? $_SERVER['QUERY_STRING'] : '';
783 $targetPage = Router::findPage($query, $_GET, isLoggedIn());
784
785 // Call plugin hooks for header, footer and includes, specifying which page will be rendered.
786 // Then assign generated data to RainTPL.
787 $common_hooks = array(
788 'includes',
789 'header',
790 'footer',
791 );
792
793 foreach($common_hooks as $name) {
794 $plugin_data = array();
795 $pluginManager->executeHooks('render_' . $name, $plugin_data,
796 array(
797 'target' => $targetPage,
798 'loggedin' => isLoggedIn()
799 )
800 );
801 $PAGE->assign('plugins_' . $name, $plugin_data);
802 }
803
804 // -------- Display login form.
805 if ($targetPage == Router::$PAGE_LOGIN)
806 {
807 if ($conf->get('security.open_shaarli')) { header('Location: ?'); exit; } // No need to login for open Shaarli
808 if (isset($_GET['username'])) {
809 $PAGE->assign('username', escape($_GET['username']));
810 }
811 $PAGE->assign('returnurl',(isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']):''));
812 $PAGE->renderPage('loginform');
813 exit;
814 }
815 // -------- User wants to logout.
816 if (isset($_SERVER['QUERY_STRING']) && startsWith($_SERVER['QUERY_STRING'], 'do=logout'))
817 {
818 invalidateCaches($conf->get('resource.page_cache'));
819 logout();
820 header('Location: ?');
821 exit;
822 }
823
824 // -------- Picture wall
825 if ($targetPage == Router::$PAGE_PICWALL)
826 {
827 // Optionally filter the results:
828 $links = $LINKSDB->filterSearch($_GET);
829 $linksToDisplay = array();
830
831 // Get only links which have a thumbnail.
832 foreach($links as $link)
833 {
834 $permalink='?'.escape(smallHash($link['linkdate']));
835 $thumb=lazyThumbnail($conf, $link['url'],$permalink);
836 if ($thumb!='') // Only output links which have a thumbnail.
837 {
838 $link['thumbnail']=$thumb; // Thumbnail HTML code.
839 $linksToDisplay[]=$link; // Add to array.
840 }
841 }
842
843 $data = array(
844 'linksToDisplay' => $linksToDisplay,
845 );
846 $pluginManager->executeHooks('render_picwall', $data, array('loggedin' => isLoggedIn()));
847
848 foreach ($data as $key => $value) {
849 $PAGE->assign($key, $value);
850 }
851
852 $PAGE->renderPage('picwall');
853 exit;
854 }
855
856 // -------- Tag cloud
857 if ($targetPage == Router::$PAGE_TAGCLOUD)
858 {
859 $tags= $LINKSDB->allTags();
860
861 // We sort tags alphabetically, then choose a font size according to count.
862 // First, find max value.
863 $maxcount = 0;
864 foreach ($tags as $value) {
865 $maxcount = max($maxcount, $value);
866 }
867
868 // Sort tags alphabetically: case insensitive, support locale if available.
869 uksort($tags, function($a, $b) {
870 // Collator is part of PHP intl.
871 if (class_exists('Collator')) {
872 $c = new Collator(setlocale(LC_COLLATE, 0));
873 if (!intl_is_failure(intl_get_error_code())) {
874 return $c->compare($a, $b);
875 }
876 }
877 return strcasecmp($a, $b);
878 });
879
880 $tagList = array();
881 foreach($tags as $key => $value) {
882 // Tag font size scaling:
883 // default 15 and 30 logarithm bases affect scaling,
884 // 22 and 6 are arbitrary font sizes for max and min sizes.
885 $size = log($value, 15) / log($maxcount, 30) * 2.2 + 0.8;
886 $tagList[$key] = array(
887 'count' => $value,
888 'size' => number_format($size, 2, '.', ''),
889 );
890 }
891
892 $data = array(
893 'tags' => $tagList,
894 );
895 $pluginManager->executeHooks('render_tagcloud', $data, array('loggedin' => isLoggedIn()));
896
897 foreach ($data as $key => $value) {
898 $PAGE->assign($key, $value);
899 }
900
901 $PAGE->renderPage('tagcloud');
902 exit;
903 }
904
905 // Daily page.
906 if ($targetPage == Router::$PAGE_DAILY) {
907 showDaily($PAGE, $LINKSDB, $conf, $pluginManager);
908 }
909
910 // ATOM and RSS feed.
911 if ($targetPage == Router::$PAGE_FEED_ATOM || $targetPage == Router::$PAGE_FEED_RSS) {
912 $feedType = $targetPage == Router::$PAGE_FEED_RSS ? FeedBuilder::$FEED_RSS : FeedBuilder::$FEED_ATOM;
913 header('Content-Type: application/'. $feedType .'+xml; charset=utf-8');
914
915 // Cache system
916 $query = $_SERVER['QUERY_STRING'];
917 $cache = new CachedPage(
918 $conf->get('resource.page_cache'),
919 page_url($_SERVER),
920 startsWith($query,'do='. $targetPage) && !isLoggedIn()
921 );
922 $cached = $cache->cachedVersion();
923 if (!empty($cached)) {
924 echo $cached;
925 exit;
926 }
927
928 // Generate data.
929 $feedGenerator = new FeedBuilder($LINKSDB, $feedType, $_SERVER, $_GET, isLoggedIn());
930 $feedGenerator->setLocale(strtolower(setlocale(LC_COLLATE, 0)));
931 $feedGenerator->setHideDates($conf->get('privacy.hide_timestamps') && !isLoggedIn());
932 $feedGenerator->setUsePermalinks(isset($_GET['permalinks']) || !$conf->get('feed.rss_permalinks'));
933 $pshUrl = $conf->get('config.PUBSUBHUB_URL');
934 if (!empty($pshUrl)) {
935 $feedGenerator->setPubsubhubUrl($pshUrl);
936 }
937 $data = $feedGenerator->buildData();
938
939 // Process plugin hook.
940 $pluginManager->executeHooks('render_feed', $data, array(
941 'loggedin' => isLoggedIn(),
942 'target' => $targetPage,
943 ));
944
945 // Render the template.
946 $PAGE->assignAll($data);
947 $PAGE->renderPage('feed.'. $feedType);
948 $cache->cache(ob_get_contents());
949 ob_end_flush();
950 exit;
951 }
952
953 // Display openseach plugin (XML)
954 if ($targetPage == Router::$PAGE_OPENSEARCH) {
955 header('Content-Type: application/xml; charset=utf-8');
956 $PAGE->assign('serverurl', index_url($_SERVER));
957 $PAGE->renderPage('opensearch');
958 exit;
959 }
960
961 // -------- User clicks on a tag in a link: The tag is added to the list of searched tags (searchtags=...)
962 if (isset($_GET['addtag']))
963 {
964 // Get previous URL (http_referer) and add the tag to the searchtags parameters in query.
965 if (empty($_SERVER['HTTP_REFERER'])) { header('Location: ?searchtags='.urlencode($_GET['addtag'])); exit; } // In case browser does not send HTTP_REFERER
966 parse_str(parse_url($_SERVER['HTTP_REFERER'],PHP_URL_QUERY), $params);
967
968 // Prevent redirection loop
969 if (isset($params['addtag'])) {
970 unset($params['addtag']);
971 }
972
973 // Check if this tag is already in the search query and ignore it if it is.
974 // Each tag is always separated by a space
975 if (isset($params['searchtags'])) {
976 $current_tags = explode(' ', $params['searchtags']);
977 } else {
978 $current_tags = array();
979 }
980 $addtag = true;
981 foreach ($current_tags as $value) {
982 if ($value === $_GET['addtag']) {
983 $addtag = false;
984 break;
985 }
986 }
987 // Append the tag if necessary
988 if (empty($params['searchtags'])) {
989 $params['searchtags'] = trim($_GET['addtag']);
990 }
991 else if ($addtag) {
992 $params['searchtags'] = trim($params['searchtags']).' '.trim($_GET['addtag']);
993 }
994
995 unset($params['page']); // We also remove page (keeping the same page has no sense, since the results are different)
996 header('Location: ?'.http_build_query($params));
997 exit;
998 }
999
1000 // -------- User clicks on a tag in result count: Remove the tag from the list of searched tags (searchtags=...)
1001 if (isset($_GET['removetag'])) {
1002 // Get previous URL (http_referer) and remove the tag from the searchtags parameters in query.
1003 if (empty($_SERVER['HTTP_REFERER'])) {
1004 header('Location: ?');
1005 exit;
1006 }
1007
1008 // In case browser does not send HTTP_REFERER
1009 parse_str(parse_url($_SERVER['HTTP_REFERER'], PHP_URL_QUERY), $params);
1010
1011 // Prevent redirection loop
1012 if (isset($params['removetag'])) {
1013 unset($params['removetag']);
1014 }
1015
1016 if (isset($params['searchtags'])) {
1017 $tags = explode(' ', $params['searchtags']);
1018 // Remove value from array $tags.
1019 $tags = array_diff($tags, array($_GET['removetag']));
1020 $params['searchtags'] = implode(' ',$tags);
1021
1022 if (empty($params['searchtags'])) {
1023 unset($params['searchtags']);
1024 }
1025
1026 unset($params['page']); // We also remove page (keeping the same page has no sense, since the results are different)
1027 }
1028 header('Location: ?'.http_build_query($params));
1029 exit;
1030 }
1031
1032 // -------- User wants to change the number of links per page (linksperpage=...)
1033 if (isset($_GET['linksperpage'])) {
1034 if (is_numeric($_GET['linksperpage'])) {
1035 $_SESSION['LINKS_PER_PAGE']=abs(intval($_GET['linksperpage']));
1036 }
1037
1038 header('Location: '. generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('linksperpage')));
1039 exit;
1040 }
1041
1042 // -------- User wants to see only private links (toggle)
1043 if (isset($_GET['privateonly'])) {
1044 if (empty($_SESSION['privateonly'])) {
1045 $_SESSION['privateonly'] = 1; // See only private links
1046 } else {
1047 unset($_SESSION['privateonly']); // See all links
1048 }
1049
1050 header('Location: '. generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('privateonly')));
1051 exit;
1052 }
1053
1054 // -------- Handle other actions allowed for non-logged in users:
1055 if (!isLoggedIn())
1056 {
1057 // User tries to post new link but is not logged in:
1058 // Show login screen, then redirect to ?post=...
1059 if (isset($_GET['post']))
1060 {
1061 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($_GET['source']):'')); // Redirect to login page, then back to post link.
1062 exit;
1063 }
1064
1065 showLinkList($PAGE, $LINKSDB, $conf, $pluginManager);
1066 if (isset($_GET['edit_link'])) {
1067 header('Location: ?do=login&edit_link='. escape($_GET['edit_link']));
1068 exit;
1069 }
1070
1071 exit; // Never remove this one! All operations below are reserved for logged in user.
1072 }
1073
1074 // -------- All other functions are reserved for the registered user:
1075
1076 // -------- Display the Tools menu if requested (import/export/bookmarklet...)
1077 if ($targetPage == Router::$PAGE_TOOLS)
1078 {
1079 $data = array(
1080 'pageabsaddr' => index_url($_SERVER),
1081 );
1082 $pluginManager->executeHooks('render_tools', $data);
1083
1084 foreach ($data as $key => $value) {
1085 $PAGE->assign($key, $value);
1086 }
1087
1088 $PAGE->renderPage('tools');
1089 exit;
1090 }
1091
1092 // -------- User wants to change his/her password.
1093 if ($targetPage == Router::$PAGE_CHANGEPASSWORD)
1094 {
1095 if ($conf->get('security.open_shaarli')) {
1096 die('You are not supposed to change a password on an Open Shaarli.');
1097 }
1098
1099 if (!empty($_POST['setpassword']) && !empty($_POST['oldpassword']))
1100 {
1101 if (!tokenOk($_POST['token'])) die('Wrong token.'); // Go away!
1102
1103 // Make sure old password is correct.
1104 $oldhash = sha1($_POST['oldpassword'].$conf->get('credentials.login').$conf->get('credentials.salt'));
1105 if ($oldhash!= $conf->get('credentials.hash')) { echo '<script>alert("The old password is not correct.");document.location=\'?do=changepasswd\';</script>'; exit; }
1106 // Save new password
1107 // Salt renders rainbow-tables attacks useless.
1108 $conf->set('credentials.salt', sha1(uniqid('', true) .'_'. mt_rand()));
1109 $conf->set('credentials.hash', sha1($_POST['setpassword'] . $conf->get('credentials.login') . $conf->get('credentials.salt')));
1110 try {
1111 $conf->write(isLoggedIn());
1112 }
1113 catch(Exception $e) {
1114 error_log(
1115 'ERROR while writing config file after changing password.' . PHP_EOL .
1116 $e->getMessage()
1117 );
1118
1119 // TODO: do not handle exceptions/errors in JS.
1120 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do=tools\';</script>';
1121 exit;
1122 }
1123 echo '<script>alert("Your password has been changed.");document.location=\'?do=tools\';</script>';
1124 exit;
1125 }
1126 else // show the change password form.
1127 {
1128 $PAGE->renderPage('changepassword');
1129 exit;
1130 }
1131 }
1132
1133 // -------- User wants to change configuration
1134 if ($targetPage == Router::$PAGE_CONFIGURE)
1135 {
1136 if (!empty($_POST['title']) )
1137 {
1138 if (!tokenOk($_POST['token'])) {
1139 die('Wrong token.'); // Go away!
1140 }
1141 $tz = 'UTC';
1142 if (!empty($_POST['continent']) && !empty($_POST['city'])
1143 && isTimeZoneValid($_POST['continent'], $_POST['city'])
1144 ) {
1145 $tz = $_POST['continent'] . '/' . $_POST['city'];
1146 }
1147 $conf->set('general.timezone', $tz);
1148 $conf->set('general.title', escape($_POST['title']));
1149 $conf->set('general.header_link', escape($_POST['titleLink']));
1150 $conf->set('redirector.url', escape($_POST['redirector']));
1151 $conf->set('security.session_protection_disabled', !empty($_POST['disablesessionprotection']));
1152 $conf->set('privacy.default_private_links', !empty($_POST['privateLinkByDefault']));
1153 $conf->set('feed.rss_permalinks', !empty($_POST['enableRssPermalinks']));
1154 $conf->set('updates.check_updates', !empty($_POST['updateCheck']));
1155 $conf->set('privacy.hide_public_links', !empty($_POST['hidePublicLinks']));
1156 try {
1157 $conf->write(isLoggedIn());
1158 }
1159 catch(Exception $e) {
1160 error_log(
1161 'ERROR while writing config file after configuration update.' . PHP_EOL .
1162 $e->getMessage()
1163 );
1164
1165 // TODO: do not handle exceptions/errors in JS.
1166 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do=configure\';</script>';
1167 exit;
1168 }
1169 echo '<script>alert("Configuration was saved.");document.location=\'?do=configure\';</script>';
1170 exit;
1171 }
1172 else // Show the configuration form.
1173 {
1174 $PAGE->assign('title', $conf->get('general.title'));
1175 $PAGE->assign('redirector', $conf->get('redirector.url'));
1176 list($timezone_form, $timezone_js) = generateTimeZoneForm($conf->get('general.timezone'));
1177 $PAGE->assign('timezone_form', $timezone_form);
1178 $PAGE->assign('timezone_js',$timezone_js);
1179 $PAGE->assign('private_links_default', $conf->get('privacy.default_private_links', false));
1180 $PAGE->assign('session_protection_disabled', $conf->get('security.session_protection_disabled', false));
1181 $PAGE->assign('enable_rss_permalinks', $conf->get('feed.rss_permalinks', false));
1182 $PAGE->assign('enable_update_check', $conf->get('updates.check_updates', true));
1183 $PAGE->assign('hide_public_links', $conf->get('privacy.hide_public_links', false));
1184 $PAGE->renderPage('configure');
1185 exit;
1186 }
1187 }
1188
1189 // -------- User wants to rename a tag or delete it
1190 if ($targetPage == Router::$PAGE_CHANGETAG)
1191 {
1192 if (empty($_POST['fromtag']) || (empty($_POST['totag']) && isset($_POST['renametag']))) {
1193 $PAGE->assign('tags', $LINKSDB->allTags());
1194 $PAGE->renderPage('changetag');
1195 exit;
1196 }
1197
1198 if (!tokenOk($_POST['token'])) {
1199 die('Wrong token.');
1200 }
1201
1202 // Delete a tag:
1203 if (isset($_POST['deletetag']) && !empty($_POST['fromtag'])) {
1204 $needle = trim($_POST['fromtag']);
1205 // True for case-sensitive tag search.
1206 $linksToAlter = $LINKSDB->filterSearch(array('searchtags' => $needle), true);
1207 foreach($linksToAlter as $key=>$value)
1208 {
1209 $tags = explode(' ',trim($value['tags']));
1210 unset($tags[array_search($needle,$tags)]); // Remove tag.
1211 $value['tags']=trim(implode(' ',$tags));
1212 $LINKSDB[$key]=$value;
1213 }
1214 $LINKSDB->save($conf->get('resource.page_cache'));
1215 echo '<script>alert("Tag was removed from '.count($linksToAlter).' links.");document.location=\'?\';</script>';
1216 exit;
1217 }
1218
1219 // Rename a tag:
1220 if (isset($_POST['renametag']) && !empty($_POST['fromtag']) && !empty($_POST['totag'])) {
1221 $needle = trim($_POST['fromtag']);
1222 // True for case-sensitive tag search.
1223 $linksToAlter = $LINKSDB->filterSearch(array('searchtags' => $needle), true);
1224 foreach($linksToAlter as $key=>$value)
1225 {
1226 $tags = explode(' ',trim($value['tags']));
1227 $tags[array_search($needle,$tags)] = trim($_POST['totag']); // Replace tags value.
1228 $value['tags']=trim(implode(' ',$tags));
1229 $LINKSDB[$key]=$value;
1230 }
1231 $LINKSDB->save($conf->get('resource.page_cache')); // Save to disk.
1232 echo '<script>alert("Tag was renamed in '.count($linksToAlter).' links.");document.location=\'?searchtags='.urlencode($_POST['totag']).'\';</script>';
1233 exit;
1234 }
1235 }
1236
1237 // -------- User wants to add a link without using the bookmarklet: Show form.
1238 if ($targetPage == Router::$PAGE_ADDLINK)
1239 {
1240 $PAGE->renderPage('addlink');
1241 exit;
1242 }
1243
1244 // -------- User clicked the "Save" button when editing a link: Save link to database.
1245 if (isset($_POST['save_edit']))
1246 {
1247 $linkdate = $_POST['lf_linkdate'];
1248 $updated = isset($LINKSDB[$linkdate]) ? strval(date('Ymd_His')) : false;
1249
1250 // Go away!
1251 if (! tokenOk($_POST['token'])) {
1252 die('Wrong token.');
1253 }
1254 // Remove multiple spaces.
1255 $tags = trim(preg_replace('/\s\s+/', ' ', $_POST['lf_tags']));
1256 // Remove first '-' char in tags.
1257 $tags = preg_replace('/(^| )\-/', '$1', $tags);
1258 // Remove duplicates.
1259 $tags = implode(' ', array_unique(explode(' ', $tags)));
1260
1261 $url = trim($_POST['lf_url']);
1262 if (! startsWith($url, 'http:') && ! startsWith($url, 'https:')
1263 && ! startsWith($url, 'ftp:') && ! startsWith($url, 'magnet:')
1264 && ! startsWith($url, '?') && ! startsWith($url, 'javascript:')
1265 ) {
1266 $url = 'http://' . $url;
1267 }
1268
1269 $link = array(
1270 'title' => trim($_POST['lf_title']),
1271 'url' => $url,
1272 'description' => $_POST['lf_description'],
1273 'private' => (isset($_POST['lf_private']) ? 1 : 0),
1274 'linkdate' => $linkdate,
1275 'updated' => $updated,
1276 'tags' => str_replace(',', ' ', $tags)
1277 );
1278 // If title is empty, use the URL as title.
1279 if ($link['title'] == '') {
1280 $link['title'] = $link['url'];
1281 }
1282
1283 $pluginManager->executeHooks('save_link', $link);
1284
1285 $LINKSDB[$linkdate] = $link;
1286 $LINKSDB->save($conf->get('resource.page_cache'));
1287 pubsubhub($conf);
1288
1289 // If we are called from the bookmarklet, we must close the popup:
1290 if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) {
1291 echo '<script>self.close();</script>';
1292 exit;
1293 }
1294
1295 $returnurl = !empty($_POST['returnurl']) ? $_POST['returnurl'] : '?';
1296 $location = generateLocation($returnurl, $_SERVER['HTTP_HOST'], array('addlink', 'post', 'edit_link'));
1297 // Scroll to the link which has been edited.
1298 $location .= '#' . smallHash($_POST['lf_linkdate']);
1299 // After saving the link, redirect to the page the user was on.
1300 header('Location: '. $location);
1301 exit;
1302 }
1303
1304 // -------- User clicked the "Cancel" button when editing a link.
1305 if (isset($_POST['cancel_edit']))
1306 {
1307 // If we are called from the bookmarklet, we must close the popup:
1308 if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) { echo '<script>self.close();</script>'; exit; }
1309 $returnurl = ( isset($_POST['returnurl']) ? $_POST['returnurl'] : '?' );
1310 $returnurl .= '#'.smallHash($_POST['lf_linkdate']); // Scroll to the link which has been edited.
1311 $returnurl = generateLocation($returnurl, $_SERVER['HTTP_HOST'], array('addlink', 'post', 'edit_link'));
1312 header('Location: '.$returnurl); // After canceling, redirect to the page the user was on.
1313 exit;
1314 }
1315
1316 // -------- User clicked the "Delete" button when editing a link: Delete link from database.
1317 if ($targetPage == Router::$PAGE_DELETELINK)
1318 {
1319 if (!tokenOk($_GET['token'])) die('Wrong token.');
1320 // We do not need to ask for confirmation:
1321 // - confirmation is handled by JavaScript
1322 // - we are protected from XSRF by the token.
1323 $linkdate = $_GET['delete_link'];
1324 $link = $LINKSDB[$linkdate];
1325
1326 $pluginManager->executeHooks('delete_link', $link);
1327
1328 unset($LINKSDB[$linkdate]);
1329 $LINKSDB->save($conf->get('resource.page_cache')); // save to disk
1330
1331 // If we are called from the bookmarklet, we must close the popup:
1332 if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) { echo '<script>self.close();</script>'; exit; }
1333 // Pick where we're going to redirect
1334 // =============================================================
1335 // Basically, we can't redirect to where we were previously if it was a permalink
1336 // or an edit_link, because it would 404.
1337 // Cases:
1338 // - / : nothing in $_GET, redirect to self
1339 // - /?page : redirect to self
1340 // - /?searchterm : redirect to self (there might be other links)
1341 // - /?searchtags : redirect to self
1342 // - /permalink : redirect to / (the link does not exist anymore)
1343 // - /?edit_link : redirect to / (the link does not exist anymore)
1344 // PHP treats the permalink as a $_GET variable, so we need to check if every condition for self
1345 // redirect is not satisfied, and only then redirect to /
1346 $location = "?";
1347 // Self redirection
1348 if (count($_GET) == 0
1349 || isset($_GET['page'])
1350 || isset($_GET['searchterm'])
1351 || isset($_GET['searchtags'])
1352 ) {
1353 if (isset($_POST['returnurl'])) {
1354 $location = $_POST['returnurl']; // Handle redirects given by the form
1355 } else {
1356 $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('delete_link'));
1357 }
1358 }
1359
1360 header('Location: ' . $location); // After deleting the link, redirect to appropriate location
1361 exit;
1362 }
1363
1364 // -------- User clicked the "EDIT" button on a link: Display link edit form.
1365 if (isset($_GET['edit_link']))
1366 {
1367 $link = $LINKSDB[$_GET['edit_link']]; // Read database
1368 if (!$link) { header('Location: ?'); exit; } // Link not found in database.
1369 $data = array(
1370 'link' => $link,
1371 'link_is_new' => false,
1372 'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
1373 'tags' => $LINKSDB->allTags(),
1374 );
1375 $pluginManager->executeHooks('render_editlink', $data);
1376
1377 foreach ($data as $key => $value) {
1378 $PAGE->assign($key, $value);
1379 }
1380
1381 $PAGE->renderPage('editlink');
1382 exit;
1383 }
1384
1385 // -------- User want to post a new link: Display link edit form.
1386 if (isset($_GET['post'])) {
1387 $url = cleanup_url($_GET['post']);
1388
1389 $link_is_new = false;
1390 // Check if URL is not already in database (in this case, we will edit the existing link)
1391 $link = $LINKSDB->getLinkFromUrl($url);
1392 if (!$link)
1393 {
1394 $link_is_new = true;
1395 $linkdate = strval(date('Ymd_His'));
1396 // Get title if it was provided in URL (by the bookmarklet).
1397 $title = empty($_GET['title']) ? '' : escape($_GET['title']);
1398 // Get description if it was provided in URL (by the bookmarklet). [Bronco added that]
1399 $description = empty($_GET['description']) ? '' : escape($_GET['description']);
1400 $tags = empty($_GET['tags']) ? '' : escape($_GET['tags']);
1401 $private = !empty($_GET['private']) && $_GET['private'] === "1" ? 1 : 0;
1402 // If this is an HTTP(S) link, we try go get the page to extract the title (otherwise we will to straight to the edit form.)
1403 if (empty($title) && strpos(get_url_scheme($url), 'http') !== false) {
1404 // Short timeout to keep the application responsive
1405 list($headers, $content) = get_http_response($url, 4);
1406 if (strpos($headers[0], '200 OK') !== false) {
1407 // Retrieve charset.
1408 $charset = get_charset($headers, $content);
1409 // Extract title.
1410 $title = html_extract_title($content);
1411 // Re-encode title in utf-8 if necessary.
1412 if (! empty($title) && strtolower($charset) != 'utf-8') {
1413 $title = mb_convert_encoding($title, 'utf-8', $charset);
1414 }
1415 }
1416 }
1417
1418 if ($url == '') {
1419 $url = '?' . smallHash($linkdate);
1420 $title = 'Note: ';
1421 }
1422 $url = escape($url);
1423 $title = escape($title);
1424
1425 $link = array(
1426 'linkdate' => $linkdate,
1427 'title' => $title,
1428 'url' => $url,
1429 'description' => $description,
1430 'tags' => $tags,
1431 'private' => $private
1432 );
1433 }
1434
1435 $data = array(
1436 'link' => $link,
1437 'link_is_new' => $link_is_new,
1438 'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
1439 'source' => (isset($_GET['source']) ? $_GET['source'] : ''),
1440 'tags' => $LINKSDB->allTags(),
1441 'default_private_links' => $conf->get('privacy.default_private_links', false),
1442 );
1443 $pluginManager->executeHooks('render_editlink', $data);
1444
1445 foreach ($data as $key => $value) {
1446 $PAGE->assign($key, $value);
1447 }
1448
1449 $PAGE->renderPage('editlink');
1450 exit;
1451 }
1452
1453 if ($targetPage == Router::$PAGE_EXPORT) {
1454 // Export links as a Netscape Bookmarks file
1455
1456 if (empty($_GET['selection'])) {
1457 $PAGE->renderPage('export');
1458 exit;
1459 }
1460
1461 // export as bookmarks_(all|private|public)_YYYYmmdd_HHMMSS.html
1462 $selection = $_GET['selection'];
1463 if (isset($_GET['prepend_note_url'])) {
1464 $prependNoteUrl = $_GET['prepend_note_url'];
1465 } else {
1466 $prependNoteUrl = false;
1467 }
1468
1469 try {
1470 $PAGE->assign(
1471 'links',
1472 NetscapeBookmarkUtils::filterAndFormat(
1473 $LINKSDB,
1474 $selection,
1475 $prependNoteUrl,
1476 index_url($_SERVER)
1477 )
1478 );
1479 } catch (Exception $exc) {
1480 header('Content-Type: text/plain; charset=utf-8');
1481 echo $exc->getMessage();
1482 exit;
1483 }
1484 $now = new DateTime();
1485 header('Content-Type: text/html; charset=utf-8');
1486 header(
1487 'Content-disposition: attachment; filename=bookmarks_'
1488 .$selection.'_'.$now->format(LinkDB::LINK_DATE_FORMAT).'.html'
1489 );
1490 $PAGE->assign('date', $now->format(DateTime::RFC822));
1491 $PAGE->assign('eol', PHP_EOL);
1492 $PAGE->assign('selection', $selection);
1493 $PAGE->renderPage('export.bookmarks');
1494 exit;
1495 }
1496
1497 if ($targetPage == Router::$PAGE_IMPORT) {
1498 // Upload a Netscape bookmark dump to import its contents
1499
1500 if (! isset($_POST['token']) || ! isset($_FILES['filetoupload'])) {
1501 // Show import dialog
1502 $PAGE->assign('maxfilesize', getMaxFileSize());
1503 $PAGE->renderPage('import');
1504 exit;
1505 }
1506
1507 // Import bookmarks from an uploaded file
1508 if (isset($_FILES['filetoupload']['size']) && $_FILES['filetoupload']['size'] == 0) {
1509 // The file is too big or some form field may be missing.
1510 echo '<script>alert("The file you are trying to upload is probably'
1511 .' bigger than what this webserver can accept ('
1512 .getMaxFileSize().' bytes).'
1513 .' Please upload in smaller chunks.");document.location=\'?do='
1514 .Router::$PAGE_IMPORT .'\';</script>';
1515 exit;
1516 }
1517 if (! tokenOk($_POST['token'])) {
1518 die('Wrong token.');
1519 }
1520 $status = NetscapeBookmarkUtils::import(
1521 $_POST,
1522 $_FILES,
1523 $LINKSDB,
1524 $conf->get('resource.page_cache')
1525 );
1526 echo '<script>alert("'.$status.'");document.location=\'?do='
1527 .Router::$PAGE_IMPORT .'\';</script>';
1528 exit;
1529 }
1530
1531 // Plugin administration page
1532 if ($targetPage == Router::$PAGE_PLUGINSADMIN) {
1533 $pluginMeta = $pluginManager->getPluginsMeta();
1534
1535 // Split plugins into 2 arrays: ordered enabled plugins and disabled.
1536 $enabledPlugins = array_filter($pluginMeta, function($v) { return $v['order'] !== false; });
1537 // Load parameters.
1538 $enabledPlugins = load_plugin_parameter_values($enabledPlugins, $conf->get('plugins', array()));
1539 uasort(
1540 $enabledPlugins,
1541 function($a, $b) { return $a['order'] - $b['order']; }
1542 );
1543 $disabledPlugins = array_filter($pluginMeta, function($v) { return $v['order'] === false; });
1544
1545 $PAGE->assign('enabledPlugins', $enabledPlugins);
1546 $PAGE->assign('disabledPlugins', $disabledPlugins);
1547 $PAGE->renderPage('pluginsadmin');
1548 exit;
1549 }
1550
1551 // Plugin administration form action
1552 if ($targetPage == Router::$PAGE_SAVE_PLUGINSADMIN) {
1553 try {
1554 if (isset($_POST['parameters_form'])) {
1555 unset($_POST['parameters_form']);
1556 foreach ($_POST as $param => $value) {
1557 $conf->set('plugins.'. $param, escape($value));
1558 }
1559 }
1560 else {
1561 $conf->set('general.enabled_plugins', save_plugin_config($_POST));
1562 }
1563 $conf->write(isLoggedIn());
1564 }
1565 catch (Exception $e) {
1566 error_log(
1567 'ERROR while saving plugin configuration:.' . PHP_EOL .
1568 $e->getMessage()
1569 );
1570
1571 // TODO: do not handle exceptions/errors in JS.
1572 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do='. Router::$PAGE_PLUGINSADMIN .'\';</script>';
1573 exit;
1574 }
1575 header('Location: ?do='. Router::$PAGE_PLUGINSADMIN);
1576 exit;
1577 }
1578
1579 // -------- Otherwise, simply display search form and links:
1580 showLinkList($PAGE, $LINKSDB, $conf, $pluginManager);
1581 exit;
1582 }
1583
1584 /**
1585 * Template for the list of links (<div id="linklist">)
1586 * This function fills all the necessary fields in the $PAGE for the template 'linklist.html'
1587 *
1588 * @param pageBuilder $PAGE pageBuilder instance.
1589 * @param LinkDB $LINKSDB LinkDB instance.
1590 * @param ConfigManager $conf Configuration Manager instance.
1591 * @param PluginManager $pluginManager Plugin Manager instance.
1592 */
1593 function buildLinkList($PAGE,$LINKSDB, $conf, $pluginManager)
1594 {
1595 // Used in templates
1596 $searchtags = !empty($_GET['searchtags']) ? escape($_GET['searchtags']) : '';
1597 $searchterm = !empty($_GET['searchterm']) ? escape($_GET['searchterm']) : '';
1598
1599 // Smallhash filter
1600 if (! empty($_SERVER['QUERY_STRING'])
1601 && preg_match('/^[a-zA-Z0-9-_@]{6}($|&|#)/', $_SERVER['QUERY_STRING'])) {
1602 try {
1603 $linksToDisplay = $LINKSDB->filterHash($_SERVER['QUERY_STRING']);
1604 } catch (LinkNotFoundException $e) {
1605 $PAGE->render404($e->getMessage());
1606 exit;
1607 }
1608 } else {
1609 // Filter links according search parameters.
1610 $privateonly = !empty($_SESSION['privateonly']);
1611 $linksToDisplay = $LINKSDB->filterSearch($_GET, false, $privateonly);
1612 }
1613
1614 // ---- Handle paging.
1615 $keys = array();
1616 foreach ($linksToDisplay as $key => $value) {
1617 $keys[] = $key;
1618 }
1619
1620
1621
1622 // Select articles according to paging.
1623 $pagecount = ceil(count($keys) / $_SESSION['LINKS_PER_PAGE']);
1624 $pagecount = $pagecount == 0 ? 1 : $pagecount;
1625 $page= empty($_GET['page']) ? 1 : intval($_GET['page']);
1626 $page = $page < 1 ? 1 : $page;
1627 $page = $page > $pagecount ? $pagecount : $page;
1628 // Start index.
1629 $i = ($page-1) * $_SESSION['LINKS_PER_PAGE'];
1630 $end = $i + $_SESSION['LINKS_PER_PAGE'];
1631 $linkDisp = array();
1632 while ($i<$end && $i<count($keys))
1633 {
1634 $link = $linksToDisplay[$keys[$i]];
1635 $link['description'] = format_description($link['description'], $conf->get('redirector.url'));
1636 $classLi = ($i % 2) != 0 ? '' : 'publicLinkHightLight';
1637 $link['class'] = $link['private'] == 0 ? $classLi : 'private';
1638 $date = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $link['linkdate']);
1639 $link['timestamp'] = $date->getTimestamp();
1640 if (! empty($link['updated'])) {
1641 $date = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $link['updated']);
1642 $link['updated_timestamp'] = $date->getTimestamp();
1643 } else {
1644 $link['updated_timestamp'] = '';
1645 }
1646 $taglist = explode(' ', $link['tags']);
1647 uasort($taglist, 'strcasecmp');
1648 $link['taglist'] = $taglist;
1649 $link['shorturl'] = smallHash($link['linkdate']);
1650 // Check for both signs of a note: starting with ? and 7 chars long.
1651 if ($link['url'][0] === '?' &&
1652 strlen($link['url']) === 7) {
1653 $link['url'] = index_url($_SERVER) . $link['url'];
1654 }
1655
1656 $linkDisp[$keys[$i]] = $link;
1657 $i++;
1658 }
1659
1660 // Compute paging navigation
1661 $searchtagsUrl = empty($searchtags) ? '' : '&searchtags=' . urlencode($searchtags);
1662 $searchtermUrl = empty($searchterm) ? '' : '&searchterm=' . urlencode($searchterm);
1663 $previous_page_url = '';
1664 if ($i != count($keys)) {
1665 $previous_page_url = '?page=' . ($page+1) . $searchtermUrl . $searchtagsUrl;
1666 }
1667 $next_page_url='';
1668 if ($page>1) {
1669 $next_page_url = '?page=' . ($page-1) . $searchtermUrl . $searchtagsUrl;
1670 }
1671
1672 // Fill all template fields.
1673 $data = array(
1674 'previous_page_url' => $previous_page_url,
1675 'next_page_url' => $next_page_url,
1676 'page_current' => $page,
1677 'page_max' => $pagecount,
1678 'result_count' => count($linksToDisplay),
1679 'search_term' => $searchterm,
1680 'search_tags' => $searchtags,
1681 'redirector' => $conf->get('redirector.url'), // Optional redirector URL.
1682 'links' => $linkDisp,
1683 'tags' => $LINKSDB->allTags(),
1684 );
1685
1686 // If there is only a single link, we change on-the-fly the title of the page.
1687 if (count($linksToDisplay) == 1) {
1688 $data['pagetitle'] = $linksToDisplay[$keys[0]]['title'] .' - '. $conf->get('general.title');
1689 }
1690
1691 $pluginManager->executeHooks('render_linklist', $data, array('loggedin' => isLoggedIn()));
1692
1693 foreach ($data as $key => $value) {
1694 $PAGE->assign($key, $value);
1695 }
1696
1697 return;
1698 }
1699
1700 /**
1701 * Compute the thumbnail for a link.
1702 *
1703 * With a link to the original URL.
1704 * Understands various services (youtube.com...)
1705 * Input: $url = URL for which the thumbnail must be found.
1706 * $href = if provided, this URL will be followed instead of $url
1707 * Returns an associative array with thumbnail attributes (src,href,width,height,style,alt)
1708 * Some of them may be missing.
1709 * Return an empty array if no thumbnail available.
1710 *
1711 * @param ConfigManager $conf Configuration Manager instance.
1712 * @param string $url
1713 * @param string|bool $href
1714 *
1715 * @return array
1716 */
1717 function computeThumbnail($conf, $url, $href = false)
1718 {
1719 if (!$conf->get('thumbnail.enable_thumbnails')) return array();
1720 if ($href==false) $href=$url;
1721
1722 // For most hosts, the URL of the thumbnail can be easily deduced from the URL of the link.
1723 // (e.g. http://www.youtube.com/watch?v=spVypYk4kto ---> http://img.youtube.com/vi/spVypYk4kto/default.jpg )
1724 // ^^^^^^^^^^^ ^^^^^^^^^^^
1725 $domain = parse_url($url,PHP_URL_HOST);
1726 if ($domain=='youtube.com' || $domain=='www.youtube.com')
1727 {
1728 parse_str(parse_url($url,PHP_URL_QUERY), $params); // Extract video ID and get thumbnail
1729 if (!empty($params['v'])) return array('src'=>'https://img.youtube.com/vi/'.$params['v'].'/default.jpg',
1730 'href'=>$href,'width'=>'120','height'=>'90','alt'=>'YouTube thumbnail');
1731 }
1732 if ($domain=='youtu.be') // Youtube short links
1733 {
1734 $path = parse_url($url,PHP_URL_PATH);
1735 return array('src'=>'https://img.youtube.com/vi'.$path.'/default.jpg',
1736 'href'=>$href,'width'=>'120','height'=>'90','alt'=>'YouTube thumbnail');
1737 }
1738 if ($domain=='pix.toile-libre.org') // pix.toile-libre.org image hosting
1739 {
1740 parse_str(parse_url($url,PHP_URL_QUERY), $params); // Extract image filename.
1741 if (!empty($params) && !empty($params['img'])) return array('src'=>'http://pix.toile-libre.org/upload/thumb/'.urlencode($params['img']),
1742 'href'=>$href,'style'=>'max-width:120px; max-height:150px','alt'=>'pix.toile-libre.org thumbnail');
1743 }
1744
1745 if ($domain=='imgur.com')
1746 {
1747 $path = parse_url($url,PHP_URL_PATH);
1748 if (startsWith($path,'/a/')) return array(); // Thumbnails for albums are not available.
1749 if (startsWith($path,'/r/')) return array('src'=>'https://i.imgur.com/'.basename($path).'s.jpg',
1750 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
1751 if (startsWith($path,'/gallery/')) return array('src'=>'https://i.imgur.com'.substr($path,8).'s.jpg',
1752 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
1753
1754 if (substr_count($path,'/')==1) return array('src'=>'https://i.imgur.com/'.substr($path,1).'s.jpg',
1755 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
1756 }
1757 if ($domain=='i.imgur.com')
1758 {
1759 $pi = pathinfo(parse_url($url,PHP_URL_PATH));
1760 if (!empty($pi['filename'])) return array('src'=>'https://i.imgur.com/'.$pi['filename'].'s.jpg',
1761 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
1762 }
1763 if ($domain=='dailymotion.com' || $domain=='www.dailymotion.com')
1764 {
1765 if (strpos($url,'dailymotion.com/video/')!==false)
1766 {
1767 $thumburl=str_replace('dailymotion.com/video/','dailymotion.com/thumbnail/video/',$url);
1768 return array('src'=>$thumburl,
1769 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'DailyMotion thumbnail');
1770 }
1771 }
1772 if (endsWith($domain,'.imageshack.us'))
1773 {
1774 $ext=strtolower(pathinfo($url,PATHINFO_EXTENSION));
1775 if ($ext=='jpg' || $ext=='jpeg' || $ext=='png' || $ext=='gif')
1776 {
1777 $thumburl = substr($url,0,strlen($url)-strlen($ext)).'th.'.$ext;
1778 return array('src'=>$thumburl,
1779 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'imageshack.us thumbnail');
1780 }
1781 }
1782
1783 // Some other hosts are SLOW AS HELL and usually require an extra HTTP request to get the thumbnail URL.
1784 // So we deport the thumbnail generation in order not to slow down page generation
1785 // (and we also cache the thumbnail)
1786
1787 if (! $conf->get('thumbnail.enable_localcache')) return array(); // If local cache is disabled, no thumbnails for services which require the use a local cache.
1788
1789 if ($domain=='flickr.com' || endsWith($domain,'.flickr.com')
1790 || $domain=='vimeo.com'
1791 || $domain=='ted.com' || endsWith($domain,'.ted.com')
1792 || $domain=='xkcd.com' || endsWith($domain,'.xkcd.com')
1793 )
1794 {
1795 if ($domain=='vimeo.com')
1796 { // Make sure this vimeo URL points to a video (/xxx... where xxx is numeric)
1797 $path = parse_url($url,PHP_URL_PATH);
1798 if (!preg_match('!/\d+.+?!',$path)) return array(); // This is not a single video URL.
1799 }
1800 if ($domain=='xkcd.com' || endsWith($domain,'.xkcd.com'))
1801 { // Make sure this URL points to a single comic (/xxx... where xxx is numeric)
1802 $path = parse_url($url,PHP_URL_PATH);
1803 if (!preg_match('!/\d+.+?!',$path)) return array();
1804 }
1805 if ($domain=='ted.com' || endsWith($domain,'.ted.com'))
1806 { // Make sure this TED URL points to a video (/talks/...)
1807 $path = parse_url($url,PHP_URL_PATH);
1808 if ("/talks/" !== substr($path,0,7)) return array(); // This is not a single video URL.
1809 }
1810 $sign = hash_hmac('sha256', $url, $conf->get('credentials.salt')); // We use the salt to sign data (it's random, secret, and specific to each installation)
1811 return array('src'=>index_url($_SERVER).'?do=genthumbnail&hmac='.$sign.'&url='.urlencode($url),
1812 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'thumbnail');
1813 }
1814
1815 // For all other, we try to make a thumbnail of links ending with .jpg/jpeg/png/gif
1816 // Technically speaking, we should download ALL links and check their Content-Type to see if they are images.
1817 // But using the extension will do.
1818 $ext=strtolower(pathinfo($url,PATHINFO_EXTENSION));
1819 if ($ext=='jpg' || $ext=='jpeg' || $ext=='png' || $ext=='gif')
1820 {
1821 $sign = hash_hmac('sha256', $url, $conf->get('credentials.salt')); // We use the salt to sign data (it's random, secret, and specific to each installation)
1822 return array('src'=>index_url($_SERVER).'?do=genthumbnail&hmac='.$sign.'&url='.urlencode($url),
1823 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'thumbnail');
1824 }
1825 return array(); // No thumbnail.
1826
1827 }
1828
1829
1830 // Returns the HTML code to display a thumbnail for a link
1831 // with a link to the original URL.
1832 // Understands various services (youtube.com...)
1833 // Input: $url = URL for which the thumbnail must be found.
1834 // $href = if provided, this URL will be followed instead of $url
1835 // Returns '' if no thumbnail available.
1836 function thumbnail($url,$href=false)
1837 {
1838 // FIXME!
1839 global $conf;
1840 $t = computeThumbnail($conf, $url,$href);
1841 if (count($t)==0) return ''; // Empty array = no thumbnail for this URL.
1842
1843 $html='<a href="'.escape($t['href']).'"><img src="'.escape($t['src']).'"';
1844 if (!empty($t['width'])) $html.=' width="'.escape($t['width']).'"';
1845 if (!empty($t['height'])) $html.=' height="'.escape($t['height']).'"';
1846 if (!empty($t['style'])) $html.=' style="'.escape($t['style']).'"';
1847 if (!empty($t['alt'])) $html.=' alt="'.escape($t['alt']).'"';
1848 $html.='></a>';
1849 return $html;
1850 }
1851
1852 // Returns the HTML code to display a thumbnail for a link
1853 // for the picture wall (using lazy image loading)
1854 // Understands various services (youtube.com...)
1855 // Input: $url = URL for which the thumbnail must be found.
1856 // $href = if provided, this URL will be followed instead of $url
1857 // Returns '' if no thumbnail available.
1858 function lazyThumbnail($conf, $url,$href=false)
1859 {
1860 // FIXME!
1861 global $conf;
1862 $t = computeThumbnail($conf, $url,$href);
1863 if (count($t)==0) return ''; // Empty array = no thumbnail for this URL.
1864
1865 $html='<a href="'.escape($t['href']).'">';
1866
1867 // Lazy image
1868 $html.='<img class="b-lazy" src="#" data-src="'.escape($t['src']).'"';
1869
1870 if (!empty($t['width'])) $html.=' width="'.escape($t['width']).'"';
1871 if (!empty($t['height'])) $html.=' height="'.escape($t['height']).'"';
1872 if (!empty($t['style'])) $html.=' style="'.escape($t['style']).'"';
1873 if (!empty($t['alt'])) $html.=' alt="'.escape($t['alt']).'"';
1874 $html.='>';
1875
1876 // No-JavaScript fallback.
1877 $html.='<noscript><img src="'.escape($t['src']).'"';
1878 if (!empty($t['width'])) $html.=' width="'.escape($t['width']).'"';
1879 if (!empty($t['height'])) $html.=' height="'.escape($t['height']).'"';
1880 if (!empty($t['style'])) $html.=' style="'.escape($t['style']).'"';
1881 if (!empty($t['alt'])) $html.=' alt="'.escape($t['alt']).'"';
1882 $html.='></noscript></a>';
1883
1884 return $html;
1885 }
1886
1887
1888 /**
1889 * Installation
1890 * This function should NEVER be called if the file data/config.php exists.
1891 *
1892 * @param ConfigManager $conf Configuration Manager instance.
1893 */
1894 function install($conf)
1895 {
1896 // On free.fr host, make sure the /sessions directory exists, otherwise login will not work.
1897 if (endsWith($_SERVER['HTTP_HOST'],'.free.fr') && !is_dir($_SERVER['DOCUMENT_ROOT'].'/sessions')) mkdir($_SERVER['DOCUMENT_ROOT'].'/sessions',0705);
1898
1899
1900 // This part makes sure sessions works correctly.
1901 // (Because on some hosts, session.save_path may not be set correctly,
1902 // or we may not have write access to it.)
1903 if (isset($_GET['test_session']) && ( !isset($_SESSION) || !isset($_SESSION['session_tested']) || $_SESSION['session_tested']!='Working'))
1904 { // Step 2: Check if data in session is correct.
1905 echo '<pre>Sessions do not seem to work correctly on your server.<br>';
1906 echo 'Make sure the variable session.save_path is set correctly in your php config, and that you have write access to it.<br>';
1907 echo 'It currently points to '.session_save_path().'<br>';
1908 echo 'Check that the hostname used to access Shaarli contains a dot. On some browsers, accessing your server via a hostname like \'localhost\' or any custom hostname without a dot causes cookie storage to fail. We recommend accessing your server via it\'s IP address or Fully Qualified Domain Name.<br>';
1909 echo '<br><a href="?">Click to try again.</a></pre>';
1910 die;
1911 }
1912 if (!isset($_SESSION['session_tested']))
1913 { // Step 1 : Try to store data in session and reload page.
1914 $_SESSION['session_tested'] = 'Working'; // Try to set a variable in session.
1915 header('Location: '.index_url($_SERVER).'?test_session'); // Redirect to check stored data.
1916 }
1917 if (isset($_GET['test_session']))
1918 { // Step 3: Sessions are OK. Remove test parameter from URL.
1919 header('Location: '.index_url($_SERVER));
1920 }
1921
1922
1923 if (!empty($_POST['setlogin']) && !empty($_POST['setpassword']))
1924 {
1925 $tz = 'UTC';
1926 if (!empty($_POST['continent']) && !empty($_POST['city'])
1927 && isTimeZoneValid($_POST['continent'], $_POST['city'])
1928 ) {
1929 $tz = $_POST['continent'].'/'.$_POST['city'];
1930 }
1931 $conf->set('general.timezone', $tz);
1932 $login = $_POST['setlogin'];
1933 $conf->set('credentials.login', $login);
1934 $salt = sha1(uniqid('', true) .'_'. mt_rand());
1935 $conf->set('credentials.salt', $salt);
1936 $conf->set('credentials.hash', sha1($_POST['setpassword'] . $login . $salt));
1937 if (!empty($_POST['title'])) {
1938 $conf->set('general.title', escape($_POST['title']));
1939 } else {
1940 $conf->set('general.title', 'Shared links on '.escape(index_url($_SERVER)));
1941 }
1942 $conf->set('updates.check_updates', !empty($_POST['updateCheck']));
1943 try {
1944 // Everything is ok, let's create config file.
1945 $conf->write(isLoggedIn());
1946 }
1947 catch(Exception $e) {
1948 error_log(
1949 'ERROR while writing config file after installation.' . PHP_EOL .
1950 $e->getMessage()
1951 );
1952
1953 // TODO: do not handle exceptions/errors in JS.
1954 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?\';</script>';
1955 exit;
1956 }
1957 echo '<script>alert("Shaarli is now configured. Please enter your login/password and start shaaring your links!");document.location=\'?do=login\';</script>';
1958 exit;
1959 }
1960
1961 // Display config form:
1962 list($timezone_form, $timezone_js) = generateTimeZoneForm();
1963 $timezone_html = '';
1964 if ($timezone_form != '') {
1965 $timezone_html = '<tr><td><b>Timezone:</b></td><td>'.$timezone_form.'</td></tr>';
1966 }
1967
1968 $PAGE = new PageBuilder($conf);
1969 $PAGE->assign('timezone_html',$timezone_html);
1970 $PAGE->assign('timezone_js',$timezone_js);
1971 $PAGE->renderPage('install');
1972 exit;
1973 }
1974
1975 /**
1976 * Because some f*cking services like flickr require an extra HTTP request to get the thumbnail URL,
1977 * I have deported the thumbnail URL code generation here, otherwise this would slow down page generation.
1978 * The following function takes the URL a link (e.g. a flickr page) and return the proper thumbnail.
1979 * This function is called by passing the URL:
1980 * http://mywebsite.com/shaarli/?do=genthumbnail&hmac=[HMAC]&url=[URL]
1981 * [URL] is the URL of the link (e.g. a flickr page)
1982 * [HMAC] is the signature for the [URL] (so that these URL cannot be forged).
1983 * The function below will fetch the image from the webservice and store it in the cache.
1984 *
1985 * @param ConfigManager $conf Configuration Manager instance,
1986 */
1987 function genThumbnail($conf)
1988 {
1989 // Make sure the parameters in the URL were generated by us.
1990 $sign = hash_hmac('sha256', $_GET['url'], $conf->get('credentials.salt'));
1991 if ($sign!=$_GET['hmac']) die('Naughty boy!');
1992
1993 $cacheDir = $conf->get('resource.thumbnails_cache', 'cache');
1994 // Let's see if we don't already have the image for this URL in the cache.
1995 $thumbname=hash('sha1',$_GET['url']).'.jpg';
1996 if (is_file($cacheDir .'/'. $thumbname))
1997 { // We have the thumbnail, just serve it:
1998 header('Content-Type: image/jpeg');
1999 echo file_get_contents($cacheDir .'/'. $thumbname);
2000 return;
2001 }
2002 // We may also serve a blank image (if service did not respond)
2003 $blankname=hash('sha1',$_GET['url']).'.gif';
2004 if (is_file($cacheDir .'/'. $blankname))
2005 {
2006 header('Content-Type: image/gif');
2007 echo file_get_contents($cacheDir .'/'. $blankname);
2008 return;
2009 }
2010
2011 // Otherwise, generate the thumbnail.
2012 $url = $_GET['url'];
2013 $domain = parse_url($url,PHP_URL_HOST);
2014
2015 if ($domain=='flickr.com' || endsWith($domain,'.flickr.com'))
2016 {
2017 // Crude replacement to handle new flickr domain policy (They prefer www. now)
2018 $url = str_replace('http://flickr.com/','http://www.flickr.com/',$url);
2019
2020 // Is this a link to an image, or to a flickr page ?
2021 $imageurl='';
2022 if (endsWith(parse_url($url, PHP_URL_PATH), '.jpg'))
2023 { // This is a direct link to an image. e.g. http://farm1.staticflickr.com/5/5921913_ac83ed27bd_o.jpg
2024 preg_match('!(http://farm\d+\.staticflickr\.com/\d+/\d+_\w+_)\w.jpg!',$url,$matches);
2025 if (!empty($matches[1])) $imageurl=$matches[1].'m.jpg';
2026 }
2027 else // This is a flickr page (html)
2028 {
2029 // Get the flickr html page.
2030 list($headers, $content) = get_http_response($url, 20);
2031 if (strpos($headers[0], '200 OK') !== false)
2032 {
2033 // flickr now nicely provides the URL of the thumbnail in each flickr page.
2034 preg_match('!<link rel=\"image_src\" href=\"(.+?)\"!', $content, $matches);
2035 if (!empty($matches[1])) $imageurl=$matches[1];
2036
2037 // In albums (and some other pages), the link rel="image_src" is not provided,
2038 // but flickr provides:
2039 // <meta property="og:image" content="http://farm4.staticflickr.com/3398/3239339068_25d13535ff_z.jpg" />
2040 if ($imageurl=='')
2041 {
2042 preg_match('!<meta property=\"og:image\" content=\"(.+?)\"!', $content, $matches);
2043 if (!empty($matches[1])) $imageurl=$matches[1];
2044 }
2045 }
2046 }
2047
2048 if ($imageurl!='')
2049 { // Let's download the image.
2050 // Image is 240x120, so 10 seconds to download should be enough.
2051 list($headers, $content) = get_http_response($imageurl, 10);
2052 if (strpos($headers[0], '200 OK') !== false) {
2053 // Save image to cache.
2054 file_put_contents($cacheDir .'/'. $thumbname, $content);
2055 header('Content-Type: image/jpeg');
2056 echo $content;
2057 return;
2058 }
2059 }
2060 }
2061
2062 elseif ($domain=='vimeo.com' )
2063 {
2064 // This is more complex: we have to perform a HTTP request, then parse the result.
2065 // Maybe we should deport this to JavaScript ? Example: http://stackoverflow.com/questions/1361149/get-img-thumbnails-from-vimeo/4285098#4285098
2066 $vid = substr(parse_url($url,PHP_URL_PATH),1);
2067 list($headers, $content) = get_http_response('https://vimeo.com/api/v2/video/'.escape($vid).'.php', 5);
2068 if (strpos($headers[0], '200 OK') !== false) {
2069 $t = unserialize($content);
2070 $imageurl = $t[0]['thumbnail_medium'];
2071 // Then we download the image and serve it to our client.
2072 list($headers, $content) = get_http_response($imageurl, 10);
2073 if (strpos($headers[0], '200 OK') !== false) {
2074 // Save image to cache.
2075 file_put_contents($cacheDir .'/'. $thumbname, $content);
2076 header('Content-Type: image/jpeg');
2077 echo $content;
2078 return;
2079 }
2080 }
2081 }
2082
2083 elseif ($domain=='ted.com' || endsWith($domain,'.ted.com'))
2084 {
2085 // The thumbnail for TED talks is located in the <link rel="image_src" [...]> tag on that page
2086 // http://www.ted.com/talks/mikko_hypponen_fighting_viruses_defending_the_net.html
2087 // <link rel="image_src" href="http://images.ted.com/images/ted/28bced335898ba54d4441809c5b1112ffaf36781_389x292.jpg" />
2088 list($headers, $content) = get_http_response($url, 5);
2089 if (strpos($headers[0], '200 OK') !== false) {
2090 // Extract the link to the thumbnail
2091 preg_match('!link rel="image_src" href="(http://images.ted.com/images/ted/.+_\d+x\d+\.jpg)"!', $content, $matches);
2092 if (!empty($matches[1]))
2093 { // Let's download the image.
2094 $imageurl=$matches[1];
2095 // No control on image size, so wait long enough
2096 list($headers, $content) = get_http_response($imageurl, 20);
2097 if (strpos($headers[0], '200 OK') !== false) {
2098 $filepath = $cacheDir .'/'. $thumbname;
2099 file_put_contents($filepath, $content); // Save image to cache.
2100 if (resizeImage($filepath))
2101 {
2102 header('Content-Type: image/jpeg');
2103 echo file_get_contents($filepath);
2104 return;
2105 }
2106 }
2107 }
2108 }
2109 }
2110
2111 elseif ($domain=='xkcd.com' || endsWith($domain,'.xkcd.com'))
2112 {
2113 // There is no thumbnail available for xkcd comics, so download the whole image and resize it.
2114 // http://xkcd.com/327/
2115 // <img src="http://imgs.xkcd.com/comics/exploits_of_a_mom.png" title="<BLABLA>" alt="<BLABLA>" />
2116 list($headers, $content) = get_http_response($url, 5);
2117 if (strpos($headers[0], '200 OK') !== false) {
2118 // Extract the link to the thumbnail
2119 preg_match('!<img src="(http://imgs.xkcd.com/comics/.*)" title="[^s]!', $content, $matches);
2120 if (!empty($matches[1]))
2121 { // Let's download the image.
2122 $imageurl=$matches[1];
2123 // No control on image size, so wait long enough
2124 list($headers, $content) = get_http_response($imageurl, 20);
2125 if (strpos($headers[0], '200 OK') !== false) {
2126 $filepath = $cacheDir.'/'.$thumbname;
2127 // Save image to cache.
2128 file_put_contents($filepath, $content);
2129 if (resizeImage($filepath))
2130 {
2131 header('Content-Type: image/jpeg');
2132 echo file_get_contents($filepath);
2133 return;
2134 }
2135 }
2136 }
2137 }
2138 }
2139
2140 else
2141 {
2142 // For all other domains, we try to download the image and make a thumbnail.
2143 // We allow 30 seconds max to download (and downloads are limited to 4 Mb)
2144 list($headers, $content) = get_http_response($url, 30);
2145 if (strpos($headers[0], '200 OK') !== false) {
2146 $filepath = $cacheDir .'/'.$thumbname;
2147 // Save image to cache.
2148 file_put_contents($filepath, $content);
2149 if (resizeImage($filepath))
2150 {
2151 header('Content-Type: image/jpeg');
2152 echo file_get_contents($filepath);
2153 return;
2154 }
2155 }
2156 }
2157
2158
2159 // Otherwise, return an empty image (8x8 transparent gif)
2160 $blankgif = base64_decode('R0lGODlhCAAIAIAAAP///////yH5BAEKAAEALAAAAAAIAAgAAAIHjI+py+1dAAA7');
2161 // Also put something in cache so that this URL is not requested twice.
2162 file_put_contents($cacheDir .'/'. $blankname, $blankgif);
2163 header('Content-Type: image/gif');
2164 echo $blankgif;
2165 }
2166
2167 // Make a thumbnail of the image (to width: 120 pixels)
2168 // Returns true if success, false otherwise.
2169 function resizeImage($filepath)
2170 {
2171 if (!function_exists('imagecreatefromjpeg')) return false; // GD not present: no thumbnail possible.
2172
2173 // Trick: some stupid people rename GIF as JPEG... or else.
2174 // So we really try to open each image type whatever the extension is.
2175 $header=file_get_contents($filepath,false,NULL,0,256); // Read first 256 bytes and try to sniff file type.
2176 $im=false;
2177 $i=strpos($header,'GIF8'); if (($i!==false) && ($i==0)) $im = imagecreatefromgif($filepath); // Well this is crude, but it should be enough.
2178 $i=strpos($header,'PNG'); if (($i!==false) && ($i==1)) $im = imagecreatefrompng($filepath);
2179 $i=strpos($header,'JFIF'); if ($i!==false) $im = imagecreatefromjpeg($filepath);
2180 if (!$im) return false; // Unable to open image (corrupted or not an image)
2181 $w = imagesx($im);
2182 $h = imagesy($im);
2183 $ystart = 0; $yheight=$h;
2184 if ($h>$w) { $ystart= ($h/2)-($w/2); $yheight=$w/2; }
2185 $nw = 120; // Desired width
2186 $nh = min(floor(($h*$nw)/$w),120); // Compute new width/height, but maximum 120 pixels height.
2187 // Resize image:
2188 $im2 = imagecreatetruecolor($nw,$nh);
2189 imagecopyresampled($im2, $im, 0, 0, 0, $ystart, $nw, $nh, $w, $yheight);
2190 imageinterlace($im2,true); // For progressive JPEG.
2191 $tempname=$filepath.'_TEMP.jpg';
2192 imagejpeg($im2, $tempname, 90);
2193 imagedestroy($im);
2194 imagedestroy($im2);
2195 unlink($filepath);
2196 rename($tempname,$filepath); // Overwrite original picture with thumbnail.
2197 return true;
2198 }
2199
2200 if (isset($_SERVER['QUERY_STRING']) && startsWith($_SERVER['QUERY_STRING'], 'do=genthumbnail')) { genThumbnail($conf); exit; } // Thumbnail generation/cache does not need the link database.
2201 if (isset($_SERVER['QUERY_STRING']) && startsWith($_SERVER['QUERY_STRING'], 'do=dailyrss')) { showDailyRSS($conf); exit; }
2202 if (!isset($_SESSION['LINKS_PER_PAGE'])) {
2203 $_SESSION['LINKS_PER_PAGE'] = $conf->get('general.links_per_page', 20);
2204 }
2205 renderPage($conf, $pluginManager);