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Fixes #456: Tag cloud does not sort tags (fully) alphabetically
[github/shaarli/Shaarli.git] / index.php
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45034273 1<?php
49e2b35b 2/**
729d2671 3 * Shaarli v0.6.3 - Shaare your links...
49e2b35b
V		 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 */
afd7b77b
V		 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
21if (date_default_timezone_get() == '') {
22 date_default_timezone_set('UTC');
23}
cb49ab94 24
28bb2b74
V		 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'] = $GLOBALS['config']['DATADIR'].'/ipbans.php';
46
2e28269b
V		 47// Access log
48$GLOBALS['config']['LOG_FILE'] = $GLOBALS['config']['DATADIR'].'/log.txt';
49
28bb2b74
V		 50// For updates check of Shaarli
51$GLOBALS['config']['UPDATECHECK_FILENAME'] = $GLOBALS['config']['DATADIR'].'/lastupdatecheck.txt';
52
53// RainTPL cache directory (keep the trailing slash!)
54$GLOBALS['config']['RAINTPL_TMP'] = 'tmp/';
55// Raintpl template directory (keep the trailing slash!)
56$GLOBALS['config']['RAINTPL_TPL'] = 'tpl/';
57
2e28269b 58// Thumbnail cache directory
28bb2b74
V		 59$GLOBALS['config']['CACHEDIR'] = 'cache';
60
61// Atom & RSS feed cache directory
62$GLOBALS['config']['PAGECACHE'] = 'pagecache';
63
64
65/*
66 * Global configuration
67 */
68// Ban IP after this many failures
69$GLOBALS['config']['BAN_AFTER'] = 4;
70// Ban duration for IP address after login failures (in seconds)
71$GLOBALS['config']['BAN_DURATION'] = 1800;
72
73// Feed options
74// Enable RSS permalinks by default.
75// This corresponds to the default behavior of shaarli before this was added as an option.
76$GLOBALS['config']['ENABLE_RSS_PERMALINKS'] = true;
77// If true, an extra "ATOM feed" button will be displayed in the toolbar
78$GLOBALS['config']['SHOW_ATOM'] = false;
79
80// Link display options
caee7ff9 81$GLOBALS['config']['HIDE_PUBLIC_LINKS'] = false;
28bb2b74
V		 82$GLOBALS['config']['HIDE_TIMESTAMPS'] = false;
83$GLOBALS['config']['LINKS_PER_PAGE'] = 20;
84
85// Open Shaarli (true): anyone can add/edit/delete links without having to login
86$GLOBALS['config']['OPEN_SHAARLI'] = false;
87
88// Thumbnails
89// Display thumbnails in links
90$GLOBALS['config']['ENABLE_THUMBNAILS'] = true;
91// Store thumbnails in a local cache
92$GLOBALS['config']['ENABLE_LOCALCACHE'] = true;
93
94// Update check frequency for Shaarli. 86400 seconds=24 hours
4407b45f
V		 95$GLOBALS['config']['UPDATECHECK_BRANCH'] = 'stable';
96$GLOBALS['config']['UPDATECHECK_INTERVAL'] = 86400;
28bb2b74
V		 97
98
99/*
100 * Plugin configuration
101 *
102 * Warning: order matters!
103 *
104 * These settings may be be overriden in:
105 * - data/config.php
106 * - each plugin's configuration file
107 */
6fc14d53
A		 108//$GLOBALS['config']['ENABLED_PLUGINS'] = array(
109// 'qrcode', 'archiveorg', 'readityourself', 'demo_plugin', 'playvideos',
110// 'wallabag', 'markdown', 'addlink_toolbar',
111//);
6fc14d53
A		 112$GLOBALS['config']['ENABLED_PLUGINS'] = array('qrcode');
113
056107ab 114//$GLOBALS['plugins']['WALLABAG_URL'] = 'https://demo.wallabag.org/';
28bb2b74
V		 115
116// PubSubHubbub support. Put an empty string to disable, or put your hub url here to enable.
117$GLOBALS['config']['PUBSUBHUB_URL'] = '';
118
119/*
120 * PHP configuration
121 */
729d2671 122define('shaarli_version', '0.6.3');
28bb2b74 123
ae00595b
CH		 124// http://server.com/x/shaarli --> /shaarli/
125define('WEB_PATH', substr($_SERVER["REQUEST_URI"], 0, 1+strrpos($_SERVER["REQUEST_URI"], '/', 0)));
45034273 126
28bb2b74
V		 127// High execution time in case of problematic imports/exports.
128ini_set('max_input_time','60');
129
130// Try to set max upload file size and read
131ini_set('memory_limit', '128M');
45034273
SS		 132ini_set('post_max_size', '16M');
133ini_set('upload_max_filesize', '16M');
45034273 134
28bb2b74
V		 135// See all error except warnings
136error_reporting(E_ALL^E_WARNING);
137// See all errors (for debugging only)
138//error_reporting(-1);
139
140/*
141 * User configuration
142 */
50c9a12e
V		 143if (is_file($GLOBALS['config']['CONFIG_FILE'])) {
144 require_once $GLOBALS['config']['CONFIG_FILE'];
145}
146
ca74886f 147// Shaarli library
2e28269b 148require_once 'application/ApplicationUtils.php';
01e48f26
V		 149require_once 'application/Cache.php';
150require_once 'application/CachedPage.php';
2e28269b 151require_once 'application/FileUtils.php';
451314eb 152require_once 'application/HttpUtils.php';
ca74886f 153require_once 'application/LinkDB.php';
822bffce 154require_once 'application/LinkFilter.php';
1557cefb 155require_once 'application/LinkUtils.php';
d1e2f8e5 156require_once 'application/TimeZone.php';
d9d776af 157require_once 'application/Url.php';
ca74886f 158require_once 'application/Utils.php';
dd484b90 159require_once 'application/Config.php';
6fc14d53
A		 160require_once 'application/PluginManager.php';
161require_once 'application/Router.php';
ca74886f 162
d1e2f8e5
V		 163// Ensure the PHP version is supported
164try {
c9cf2715 165 ApplicationUtils::checkPHPVersion('5.3', PHP_VERSION);
2e28269b 166} catch(Exception $exc) {
d1e2f8e5 167 header('Content-Type: text/plain; charset=utf-8');
2e28269b 168 echo $exc->getMessage();
d1e2f8e5
V		 169 exit;
170}
171
06b6660a
A		 172// Force cookie path (but do not change lifetime)
173$cookie = session_get_cookie_params();
174$cookiedir = '';
175if (dirname($_SERVER['SCRIPT_NAME']) != '/') {
176 $cookiedir = dirname($_SERVER["SCRIPT_NAME"]).'/';
177}
178// Set default cookie expiration and path.
179session_set_cookie_params($cookie['lifetime'], $cookiedir, $_SERVER['SERVER_NAME']);
180// Set session parameters on server side.
181// If the user does not access any page within this time, his/her session is considered expired.
182define('INACTIVITY_TIMEOUT', 3600); // in seconds.
183// Use cookies to store session.
184ini_set('session.use_cookies', 1);
185// Force cookies for session (phpsessionID forbidden in URL).
186ini_set('session.use_only_cookies', 1);
187// Prevent PHP form using sessionID in URL if cookies are disabled.
188ini_set('session.use_trans_sid', false);
189
06b6660a
A		 190session_name('shaarli');
191// Start session if needed (Some server auto-start sessions).
192if (session_id() == '') {
193 session_start();
194}
195
68bc2135
V		 196// Regenerate session ID if invalid or not defined in cookie.
197if (isset($_COOKIE['shaarli']) && !is_session_id_valid($_COOKIE['shaarli'])) {
198 session_regenerate_id(true);
199 $_COOKIE['shaarli'] = session_id();
200}
201
45034273 202include "inc/rain.tpl.class.php"; //include Rain TPL
25f5c59d 203raintpl::$tpl_dir = $GLOBALS['config']['RAINTPL_TPL']; // template directory
25f5c59d 204raintpl::$cache_dir = $GLOBALS['config']['RAINTPL_TMP']; // cache directory
45034273 205
6fc14d53
A		 206$pluginManager = PluginManager::getInstance();
207$pluginManager->load($GLOBALS['config']['ENABLED_PLUGINS']);
208
45034273
SS		 209ob_start(); // Output buffering for the page cache.
210
211
212// In case stupid admin has left magic_quotes enabled in php.ini:
213if (get_magic_quotes_gpc())
214{
215 function stripslashes_deep($value) { $value = is_array($value) ? array_map('stripslashes_deep', $value) : stripslashes($value); return $value; }
216 $_POST = array_map('stripslashes_deep', $_POST);
217 $_GET = array_map('stripslashes_deep', $_GET);
218 $_COOKIE = array_map('stripslashes_deep', $_COOKIE);
219}
220
221// Prevent caching on client side or proxy: (yes, it's ugly)
222header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
223header("Cache-Control: no-store, no-cache, must-revalidate");
224header("Cache-Control: post-check=0, pre-check=0", false);
225header("Pragma: no-cache");
226
45034273 227// Handling of old config file which do not have the new parameters.
482d67bd 228if (empty($GLOBALS['title'])) $GLOBALS['title']='Shared links on '.escape(index_url($_SERVER));
45034273 229if (empty($GLOBALS['timezone'])) $GLOBALS['timezone']=date_default_timezone_get();
8a80e4fe 230if (empty($GLOBALS['redirector'])) $GLOBALS['redirector']='';
45034273 231if (empty($GLOBALS['disablesessionprotection'])) $GLOBALS['disablesessionprotection']=false;
bb8f712d 232if (empty($GLOBALS['privateLinkByDefault'])) $GLOBALS['privateLinkByDefault']=false;
ebb2880d 233if (empty($GLOBALS['titleLink'])) $GLOBALS['titleLink']='?';
858c5c2b 234// I really need to rewrite Shaarli with a proper configuation manager.
45034273 235
50c9a12e 236if (! is_file($GLOBALS['config']['CONFIG_FILE'])) {
2e28269b
V		 237 // Ensure Shaarli has proper access to its resources
238 $errors = ApplicationUtils::checkResourcePermissions($GLOBALS['config']);
239
240 if ($errors != array()) {
241 $message = '<p>Insufficient permissions:</p><ul>';
242
243 foreach ($errors as $error) {
244 $message .= '<li>'.$error.'</li>';
245 }
246 $message .= '</ul>';
247
248 header('Content-Type: text/html; charset=utf-8');
249 echo $message;
250 exit;
251 }
252
253 // Display the installation form if no existing config is found
50c9a12e
V		 254 install();
255}
8a80e4fe 256
5f85fcd8
A		 257$GLOBALS['title'] = !empty($GLOBALS['title']) ? escape($GLOBALS['title']) : '';
258$GLOBALS['titleLink'] = !empty($GLOBALS['titleLink']) ? escape($GLOBALS['titleLink']) : '';
259$GLOBALS['redirector'] = !empty($GLOBALS['redirector']) ? escape($GLOBALS['redirector']) : '';
8a80e4fe 260
ae00595b
CH		 261// a token depending of deployment salt, user password, and the current ip
262define('STAY_SIGNED_IN_TOKEN', sha1($GLOBALS['hash'].$_SERVER["REMOTE_ADDR"].$GLOBALS['salt']));
8a80e4fe 263
45034273
SS		 264autoLocale(); // Sniff browser language and set date format accordingly.
265header('Content-Type: text/html; charset=utf-8'); // We use UTF-8 for proper international characters handling.
266
ff69d87e
FE		 267//==================================================================================================
268// Checking session state (i.e. is the user still logged in)
269//==================================================================================================
270
271function setup_login_state() {
ff69d87e 272 if ($GLOBALS['config']['OPEN_SHAARLI']) {
02ad8fb6 273 return true;
ff69d87e 274 }
02ad8fb6
JP		 275 $userIsLoggedIn = false; // By default, we do not consider the user as logged in;
276 $loginFailure = false; // If set to true, every attempt to authenticate the user will fail. This indicates that an important condition isn't met.
ff69d87e
FE		 277 if (!isset($GLOBALS['login'])) {
278 $userIsLoggedIn = false; // Shaarli is not configured yet.
279 $loginFailure = true;
280 }
281 if (isset($_COOKIE['shaarli_staySignedIn']) &&
282 $_COOKIE['shaarli_staySignedIn']===STAY_SIGNED_IN_TOKEN &&
283 !$loginFailure)
284 {
285 fillSessionInfo();
286 $userIsLoggedIn = true;
287 }
288 // If session does not exist on server side, or IP address has changed, or session has expired, logout.
289 if (empty($_SESSION['uid']) ||
290 ($GLOBALS['disablesessionprotection']==false && $_SESSION['ip']!=allIPs()) ||
291 time() >= $_SESSION['expires_on'])
292 {
293 logout();
294 $userIsLoggedIn = false;
295 $loginFailure = true;
296 }
297 if (!empty($_SESSION['longlastingsession'])) {
298 $_SESSION['expires_on']=time()+$_SESSION['longlastingsession']; // In case of "Stay signed in" checked.
299 }
300 else {
301 $_SESSION['expires_on']=time()+INACTIVITY_TIMEOUT; // Standard session expiration date.
302 }
303 if (!$loginFailure) {
304 $userIsLoggedIn = true;
305 }
306
307 return $userIsLoggedIn;
308}
ff69d87e 309$userIsLoggedIn = setup_login_state();
45034273 310
45034273 311
45034273
SS		 312// ------------------------------------------------------------------------------------------
313// Sniff browser language to display dates in the right format automatically.
314// (Note that is may not work on your server if the corresponding local is not installed.)
315function autoLocale()
316{
8438a2e5 317 $attempts = array('en_US'); // Default if browser does not send HTTP_ACCEPT_LANGUAGE
ad6c27b7 318 if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) // e.g. "fr,fr-fr;q=0.8,en;q=0.5,en-us;q=0.3"
319 { // (It's a bit crude, but it works very well. Preferred language is always presented first.)
8438a2e5
A		 320 if (preg_match('/([a-z]{2})-?([a-z]{2})?/i',$_SERVER['HTTP_ACCEPT_LANGUAGE'],$matches)) {
321 $loc = $matches[1] . (!empty($matches[2]) ? '_' . strtoupper($matches[2]) : '');
da49603b 322 $attempts = array($loc.'.UTF-8', $loc, str_replace('_', '-', $loc).'.UTF-8', str_replace('_', '-', $loc),
d33c5d4c
M		 323 $loc . '_' . strtoupper($loc).'.UTF-8', $loc . '_' . strtoupper($loc),
324 $loc . '_' . $loc.'.UTF-8', $loc . '_' . $loc, $loc . '-' . strtoupper($loc).'.UTF-8',
da49603b 325 $loc . '-' . strtoupper($loc), $loc . '-' . $loc.'.UTF-8', $loc . '-' . $loc);
8438a2e5 326 }
45034273 327 }
8438a2e5 328 setlocale(LC_TIME, $attempts); // LC_TIME = Set local for date/time format only.
45034273
SS		 329}
330
331// ------------------------------------------------------------------------------------------
332// PubSubHubbub protocol support (if enabled) [UNTESTED]
333// (Source: http://aldarone.fr/les-flux-rss-shaarli-et-pubsubhubbub/ )
334if (!empty($GLOBALS['config']['PUBSUBHUB_URL'])) include './publisher.php';
335function pubsubhub()
336{
337 if (!empty($GLOBALS['config']['PUBSUBHUB_URL']))
338 {
339 $p = new Publisher($GLOBALS['config']['PUBSUBHUB_URL']);
340 $topic_url = array (
482d67bd
V		 341 index_url($_SERVER).'?do=atom',
342 index_url($_SERVER).'?do=rss'
45034273
SS		 343 );
344 $p->publish_update($topic_url);
345 }
346}
347
348// ------------------------------------------------------------------------------------------
349// Session management
45034273
SS		 350
351// Returns the IP address of the client (Used to prevent session cookie hijacking.)
352function allIPs()
353{
354 $ip = $_SERVER["REMOTE_ADDR"];
355 // Then we use more HTTP headers to prevent session hijacking from users behind the same proxy.
356 if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) { $ip=$ip.'_'.$_SERVER['HTTP_X_FORWARDED_FOR']; }
357 if (isset($_SERVER['HTTP_CLIENT_IP'])) { $ip=$ip.'_'.$_SERVER['HTTP_CLIENT_IP']; }
358 return $ip;
359}
360
ae00595b 361function fillSessionInfo() {
ad6c27b7 362 $_SESSION['uid'] = sha1(uniqid('',true).'_'.mt_rand()); // Generate unique random number (different than phpsessionid)
ae00595b
CH		 363 $_SESSION['ip']=allIPs(); // We store IP address(es) of the client to make sure session is not hijacked.
364 $_SESSION['username']=$GLOBALS['login'];
365 $_SESSION['expires_on']=time()+INACTIVITY_TIMEOUT; // Set session expiration.
366}
367
45034273
SS		 368// Check that user/password is correct.
369function check_auth($login,$password)
370{
371 $hash = sha1($password.$login.$GLOBALS['salt']);
372 if ($login==$GLOBALS['login'] && $hash==$GLOBALS['hash'])
373 { // Login/password is correct.
ae00595b 374 fillSessionInfo();
1abe6555 375 logm($GLOBALS['config']['LOG_FILE'], $_SERVER['REMOTE_ADDR'], 'Login successful');
45034273
SS		 376 return True;
377 }
1abe6555 378 logm($GLOBALS['config']['LOG_FILE'], $_SERVER['REMOTE_ADDR'], 'Login failed for user '.$login);
45034273
SS		 379 return False;
380}
381
382// Returns true if the user is logged in.
383function isLoggedIn()
384{
ff69d87e
FE		 385 global $userIsLoggedIn;
386 return $userIsLoggedIn;
45034273
SS		 387}
388
389// Force logout.
ff69d87e
FE		 390function logout() {
391 if (isset($_SESSION)) {
392 unset($_SESSION['uid']);
393 unset($_SESSION['ip']);
394 unset($_SESSION['username']);
395 unset($_SESSION['privateonly']);
396 }
397 setcookie('shaarli_staySignedIn', FALSE, 0, WEB_PATH);
ae00595b 398}
45034273
SS		 399
400
401// ------------------------------------------------------------------------------------------
402// Brute force protection system
403// Several consecutive failed logins will ban the IP address for 30 minutes.
404if (!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?>");
405include $GLOBALS['config']['IPBANS_FILENAME'];
406// Signal a failed login. Will ban the IP if too many failures:
407function ban_loginFailed()
408{
409 $ip=$_SERVER["REMOTE_ADDR"]; $gb=$GLOBALS['IPBANS'];
410 if (!isset($gb['FAILURES'][$ip])) $gb['FAILURES'][$ip]=0;
411 $gb['FAILURES'][$ip]++;
412 if ($gb['FAILURES'][$ip]>($GLOBALS['config']['BAN_AFTER']-1))
413 {
414 $gb['BANS'][$ip]=time()+$GLOBALS['config']['BAN_DURATION'];
1abe6555 415 logm($GLOBALS['config']['LOG_FILE'], $_SERVER['REMOTE_ADDR'], 'IP address banned from login');
45034273
SS		 416 }
417 $GLOBALS['IPBANS'] = $gb;
418 file_put_contents($GLOBALS['config']['IPBANS_FILENAME'], "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>");
419}
420
421// Signals a successful login. Resets failed login counter.
422function ban_loginOk()
423{
424 $ip=$_SERVER["REMOTE_ADDR"]; $gb=$GLOBALS['IPBANS'];
425 unset($gb['FAILURES'][$ip]); unset($gb['BANS'][$ip]);
426 $GLOBALS['IPBANS'] = $gb;
427 file_put_contents($GLOBALS['config']['IPBANS_FILENAME'], "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>");
428}
429
430// Checks if the user CAN login. If 'true', the user can try to login.
431function ban_canLogin()
432{
433 $ip=$_SERVER["REMOTE_ADDR"]; $gb=$GLOBALS['IPBANS'];
434 if (isset($gb['BANS'][$ip]))
435 {
436 // User is banned. Check if the ban has expired:
437 if ($gb['BANS'][$ip]<=time())
438 { // Ban expired, user can try to login again.
1abe6555 439 logm($GLOBALS['config']['LOG_FILE'], $_SERVER['REMOTE_ADDR'], 'Ban lifted.');
45034273
SS		 440 unset($gb['FAILURES'][$ip]); unset($gb['BANS'][$ip]);
441 file_put_contents($GLOBALS['config']['IPBANS_FILENAME'], "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>");
442 return true; // Ban has expired, user can login.
443 }
444 return false; // User is banned.
445 }
446 return true; // User is not banned.
447}
448
449// ------------------------------------------------------------------------------------------
450// Process login form: Check if login/password is correct.
451if (isset($_POST['login']))
452{
453 if (!ban_canLogin()) die('I said: NO. You are banned for the moment. Go away.');
454 if (isset($_POST['password']) && tokenOk($_POST['token']) && (check_auth($_POST['login'], $_POST['password'])))
ad6c27b7 455 { // Login/password is OK.
45034273
SS		 456 ban_loginOk();
457 // If user wants to keep the session cookie even after the browser closes:
458 if (!empty($_POST['longlastingsession']))
459 {
ae00595b 460 setcookie('shaarli_staySignedIn', STAY_SIGNED_IN_TOKEN, time()+31536000, WEB_PATH);
45034273
SS		 461 $_SESSION['longlastingsession']=31536000; // (31536000 seconds = 1 year)
462 $_SESSION['expires_on']=time()+$_SESSION['longlastingsession']; // Set session expiration on server-side.
2d9fab88
SS		 463
464 $cookiedir = ''; if(dirname($_SERVER['SCRIPT_NAME'])!='/') $cookiedir=dirname($_SERVER["SCRIPT_NAME"]).'/';
2f32d074 465 session_set_cookie_params($_SESSION['longlastingsession'],$cookiedir,$_SERVER['SERVER_NAME']); // Set session cookie expiration on client side
ad6c27b7 466 // Note: Never forget the trailing slash on the cookie path!
45034273
SS		 467 session_regenerate_id(true); // Send cookie with new expiration date to browser.
468 }
469 else // Standard session expiration (=when browser closes)
470 {
2d9fab88 471 $cookiedir = ''; if(dirname($_SERVER['SCRIPT_NAME'])!='/') $cookiedir=dirname($_SERVER["SCRIPT_NAME"]).'/';
2f32d074 472 session_set_cookie_params(0,$cookiedir,$_SERVER['SERVER_NAME']); // 0 means "When browser closes"
45034273
SS		 473 session_regenerate_id(true);
474 }
f4c84ad7 475
45034273 476 // Optional redirect after login:
5fbabbb9
A		 477 if (isset($_GET['post'])) {
478 $uri = '?post='. urlencode($_GET['post']);
479 foreach (array('description', 'source', 'title') as $param) {
480 if (!empty($_GET[$param])) {
481 $uri .= '&'.$param.'='.urlencode($_GET[$param]);
482 }
483 }
484 header('Location: '. $uri);
485 exit;
486 }
487
488 if (isset($_GET['edit_link'])) {
489 header('Location: ?edit_link='. escape($_GET['edit_link']));
490 exit;
491 }
492
493 if (isset($_POST['returnurl'])) {
494 // Prevent loops over login screen.
495 if (strpos($_POST['returnurl'], 'do=login') === false) {
496 header('Location: '. escape($_POST['returnurl']));
497 exit;
498 }
45034273
SS		 499 }
500 header('Location: ?'); exit;
501 }
502 else
503 {
504 ban_loginFailed();
705f8355 505 $redir = '';
5fbabbb9
A		 506 if (isset($_GET['post'])) {
507 $redir = '?post=' . urlencode($_GET['post']);
508 foreach (array('description', 'source', 'title') as $param) {
509 if (!empty($_GET[$param])) {
510 $redir .= '&' . $param . '=' . urlencode($_GET[$param]);
511 }
512 }
513 }
fe16b01e 514 echo '<script>alert("Wrong login/password.");document.location=\'?do=login'.$redir.'\';</script>'; // Redirect to login screen.
45034273
SS		 515 exit;
516 }
517}
518
519// ------------------------------------------------------------------------------------------
520// Misc utility functions:
521
ad6c27b7 522// Convert post_max_size/upload_max_filesize (e.g. '16M') parameters to bytes.
45034273
SS		 523function return_bytes($val)
524{
525 $val = trim($val); $last=strtolower($val[strlen($val)-1]);
526 switch($last)
527 {
528 case 'g': $val *= 1024;
529 case 'm': $val *= 1024;
530 case 'k': $val *= 1024;
531 }
532 return $val;
533}
534
535// Try to determine max file size for uploads (POST).
536// Returns an integer (in bytes)
537function getMaxFileSize()
538{
539 $size1 = return_bytes(ini_get('post_max_size'));
540 $size2 = return_bytes(ini_get('upload_max_filesize'));
541 // Return the smaller of two:
542 $maxsize = min($size1,$size2);
ad6c27b7 543 // FIXME: Then convert back to readable notations ? (e.g. 2M instead of 2000000)
45034273
SS		 544 return $maxsize;
545}
546
45034273
SS		 547/* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a timestamp (Unix epoch)
548 (used to build the ADD_DATE attribute in Netscape-bookmarks file)
549 PS: I could have used strptime(), but it does not exist on Windows. I'm too kind. */
550function linkdate2timestamp($linkdate)
551{
f5b05925
JD		 552 if(strcmp($linkdate, '_000000') !== 0 || !$linkdate){
553 $Y=$M=$D=$h=$m=$s=0;
554 $r = sscanf($linkdate,'%4d%2d%2d_%2d%2d%2d',$Y,$M,$D,$h,$m,$s);
555 return mktime($h,$m,$s,$M,$D,$Y);
556 }
557 return time();
45034273
SS		 558}
559
560/* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a RFC822 date.
561 (used to build the pubDate attribute in RSS feed.) */
562function linkdate2rfc822($linkdate)
563{
564 return date('r',linkdate2timestamp($linkdate)); // 'r' is for RFC822 date format.
565}
566
567/* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a ISO 8601 date.
568 (used to build the updated tags in ATOM feed.) */
569function linkdate2iso8601($linkdate)
570{
571 return date('c',linkdate2timestamp($linkdate)); // 'c' is for ISO 8601 date format.
572}
573
45034273
SS		 574// ------------------------------------------------------------------------------------------
575// Token management for XSRF protection
576// Token should be used in any form which acts on data (create,update,delete,import...).
577if (!isset($_SESSION['tokens'])) $_SESSION['tokens']=array(); // Token are attached to the session.
578
579// Returns a token.
580function getToken()
581{
a1f5a6ec 582 $rnd = sha1(uniqid('',true).'_'.mt_rand().$GLOBALS['salt']); // We generate a random string.
45034273
SS		 583 $_SESSION['tokens'][$rnd]=1; // Store it on the server side.
584 return $rnd;
585}
586
ad6c27b7 587// Tells if a token is OK. Using this function will destroy the token.
588// true=token is OK.
45034273
SS		 589function tokenOk($token)
590{
591 if (isset($_SESSION['tokens'][$token]))
592 {
593 unset($_SESSION['tokens'][$token]); // Token is used: destroy it.
ad6c27b7 594 return true; // Token is OK.
45034273
SS		 595 }
596 return false; // Wrong token, or already used.
597}
598
599// ------------------------------------------------------------------------------------------
600/* This class is in charge of building the final page.
601 (This is basically a wrapper around RainTPL which pre-fills some fields.)
602 p = new pageBuilder;
603 p.assign('myfield','myvalue');
604 p.renderPage('mytemplate');
bb8f712d 605
45034273
SS		 606*/
607class pageBuilder
608{
609 private $tpl; // RainTPL template
610
611 function __construct()
612 {
056107ab 613 $this->tpl = false;
bb8f712d 614 }
45034273 615
056107ab
A		 616 /**
617 * Initialize all default tpl tags.
618 */
45034273 619 private function initialize()
bb8f712d
KT		 620 {
621 $this->tpl = new RainTPL;
4407b45f
V		 622
623 try {
624 $version = ApplicationUtils::checkUpdate(
625 shaarli_version,
626 $GLOBALS['config']['UPDATECHECK_FILENAME'],
627 $GLOBALS['config']['UPDATECHECK_INTERVAL'],
628 $GLOBALS['config']['ENABLE_UPDATECHECK'],
629 isLoggedIn(),
630 $GLOBALS['config']['UPDATECHECK_BRANCH']
631 );
632 $this->tpl->assign('newVersion', escape($version));
4a7af975 633 $this->tpl->assign('versionError', '');
4407b45f
V		 634
635 } catch (Exception $exc) {
1abe6555 636 logm($GLOBALS['config']['LOG_FILE'], $_SERVER['REMOTE_ADDR'], $exc->getMessage());
4a7af975 637 $this->tpl->assign('newVersion', '');
4407b45f
V		 638 $this->tpl->assign('versionError', escape($exc->getMessage()));
639 }
640
056107ab
A		 641 $this->tpl->assign('feedurl', escape(index_url($_SERVER)));
642 $searchcrits = ''; // Search criteria
643 if (!empty($_GET['searchtags'])) {
644 $searchcrits .= '&searchtags=' . urlencode($_GET['searchtags']);
645 }
646 elseif (!empty($_GET['searchterm'])) {
647 $searchcrits .= '&searchterm=' . urlencode($_GET['searchterm']);
648 }
649 $this->tpl->assign('searchcrits', $searchcrits);
650 $this->tpl->assign('source', index_url($_SERVER));
651 $this->tpl->assign('version', shaarli_version);
652 $this->tpl->assign('scripturl', index_url($_SERVER));
653 $this->tpl->assign('pagetitle', 'Shaarli');
654 $this->tpl->assign('privateonly', !empty($_SESSION['privateonly'])); // Show only private links?
655 if (!empty($GLOBALS['title'])) {
656 $this->tpl->assign('pagetitle', $GLOBALS['title']);
657 }
658 if (!empty($GLOBALS['titleLink'])) {
659 $this->tpl->assign('titleLink', $GLOBALS['titleLink']);
660 }
661 if (!empty($GLOBALS['pagetitle'])) {
662 $this->tpl->assign('pagetitle', $GLOBALS['pagetitle']);
663 }
664 $this->tpl->assign('shaarlititle', empty($GLOBALS['title']) ? 'Shaarli': $GLOBALS['title']);
e4b9a763
A		 665 if (!empty($GLOBALS['plugin_errors'])) {
666 $this->tpl->assign('plugin_errors', $GLOBALS['plugin_errors']);
056107ab 667 }
45034273 668 }
bb8f712d 669
45034273
SS		 670 // The following assign() method is basically the same as RainTPL (except that it's lazy)
671 public function assign($what,$where)
672 {
673 if ($this->tpl===false) $this->initialize(); // Lazy initialization
674 $this->tpl->assign($what,$where);
675 }
bb8f712d 676
45034273 677 // Render a specific page (using a template).
ad6c27b7 678 // e.g. pb.renderPage('picwall')
45034273
SS		 679 public function renderPage($page)
680 {
681 if ($this->tpl===false) $this->initialize(); // Lazy initialization
682 $this->tpl->draw($page);
683 }
f4c84ad7
D		 684
685 /**
686 * Render a 404 page (uses the template : tpl/404.tpl)
687 *
688 * usage : $PAGE->render404('The link was deleted')
689 * @param string $message A messate to display what is not found
690 */
691 public function render404($message='The page you are trying to reach does not exist or has been deleted.') {
692 header($_SERVER['SERVER_PROTOCOL'] . ' 404 Not Found');
693 $this->tpl->assign('error_message', $message);
694 $this->renderPage('404');
695 }
45034273
SS		 696}
697
45034273 698// ------------------------------------------------------------------------------------------
ad6c27b7 699// Output the last N links in RSS 2.0 format.
45034273
SS		 700function showRSS()
701{
702 header('Content-Type: application/rss+xml; charset=utf-8');
703
2abd3905 704 // $usepermalink : If true, use permalink instead of final link.
ad6c27b7 705 // User just has to add 'permalink' in URL parameters. e.g. http://mysite.com/shaarli/?do=rss&permalinks
ed5b38dd
FE		 706 // Also enabled through a config option
707 $usepermalinks = isset($_GET['permalinks']) || !$GLOBALS['config']['ENABLE_RSS_PERMALINKS'];
2abd3905 708
45034273
SS		 709 // Cache system
710 $query = $_SERVER["QUERY_STRING"];
01e48f26
V		 711 $cache = new CachedPage(
712 $GLOBALS['config']['PAGECACHE'],
482d67bd 713 page_url($_SERVER),
01e48f26
V		 714 startsWith($query,'do=rss') && !isLoggedIn()
715 );
716 $cached = $cache->cachedVersion();
717 if (! empty($cached)) {
718 echo $cached;
719 exit;
720 }
45034273
SS		 721
722 // If cached was not found (or not usable), then read the database and build the response:
9f15ca9e 723 $LINKSDB = new LinkDB(
9c8752a2 724 $GLOBALS['config']['DATASTORE'],
02ad8fb6 725 isLoggedIn(),
90e5bd65
A		 726 $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
727 $GLOBALS['redirector']
9f15ca9e
V		 728 );
729 // Read links from database (and filter private links if user it not logged in).
45034273 730
ad6c27b7 731 // Optionally filter the results:
822bffce
A		 732 if (!empty($_GET['searchterm'])) {
733 $linksToDisplay = $LINKSDB->filter(LinkFilter::$FILTER_TEXT, $_GET['searchterm']);
734 }
735 elseif (!empty($_GET['searchtags'])) {
736 $linksToDisplay = $LINKSDB->filter(LinkFilter::$FILTER_TAG, trim($_GET['searchtags']));
737 }
738 else {
739 $linksToDisplay = $LINKSDB;
740 }
f3db3774 741
c677013b 742 $nblinksToDisplay = 50; // Number of links to display.
822bffce
A		 743 // In URL, you can specificy the number of links. Example: nb=200 or nb=all for all links.
744 if (!empty($_GET['nb'])) {
745 $nblinksToDisplay = $_GET['nb'] == 'all' ? count($linksToDisplay) : max(intval($_GET['nb']), 1);
c677013b 746 }
45034273 747
822bffce 748 $pageaddr = escape(index_url($_SERVER));
45034273 749 echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">';
5f85fcd8 750 echo '<channel><title>'.$GLOBALS['title'].'</title><link>'.$pageaddr.'</link>';
45034273
SS		 751 echo '<description>Shared links</description><language>en-en</language><copyright>'.$pageaddr.'</copyright>'."\n\n";
752 if (!empty($GLOBALS['config']['PUBSUBHUB_URL']))
753 {
754 echo '<!-- PubSubHubbub Discovery -->';
5f85fcd8
A		 755 echo '<link rel="hub" href="'.escape($GLOBALS['config']['PUBSUBHUB_URL']).'" xmlns="http://www.w3.org/2005/Atom" />';
756 echo '<link rel="self" href="'.$pageaddr.'?do=rss" xmlns="http://www.w3.org/2005/Atom" />';
45034273
SS		 757 echo '<!-- End Of PubSubHubbub Discovery -->';
758 }
759 $i=0;
760 $keys=array(); foreach($linksToDisplay as $key=>$value) { $keys[]=$key; } // No, I can't use array_keys().
fbd9e527 761 while ($i<$nblinksToDisplay && $i<count($keys))
45034273
SS		 762 {
763 $link = $linksToDisplay[$keys[$i]];
764 $guid = $pageaddr.'?'.smallHash($link['linkdate']);
765 $rfc822date = linkdate2rfc822($link['linkdate']);
5f85fcd8 766 $absurl = $link['url'];
45034273 767 if (startsWith($absurl,'?')) $absurl=$pageaddr.$absurl; // make permalink URL absolute
2abd3905 768 if ($usepermalinks===true)
5f85fcd8 769 echo '<item><title>'.$link['title'].'</title><guid isPermaLink="true">'.$guid.'</guid><link>'.$guid.'</link>';
2abd3905 770 else
5f85fcd8
A		 771 echo '<item><title>'.$link['title'].'</title><guid isPermaLink="false">'.$guid.'</guid><link>'.$absurl.'</link>';
772 if (!$GLOBALS['config']['HIDE_TIMESTAMPS'] || isLoggedIn()) echo '<pubDate>'.escape($rfc822date)."</pubDate>\n";
45034273
SS		 773 if ($link['tags']!='') // Adding tags to each RSS entry (as mentioned in RSS specification)
774 {
5f85fcd8 775 foreach(explode(' ',$link['tags']) as $tag) { echo '<category domain="'.$pageaddr.'">'.$tag.'</category>'."\n"; }
45034273 776 }
2abd3905
SS		 777
778 // Add permalink in description
779 $descriptionlink = '(<a href="'.$guid.'">Permalink</a>)';
780 // If user wants permalinks first, put the final link in description
781 if ($usepermalinks===true) $descriptionlink = '(<a href="'.$absurl.'">Link</a>)';
782 if (strlen($link['description'])>0) $descriptionlink = '<br>'.$descriptionlink;
90e5bd65
A		 783 echo '<description><![CDATA['.
784 format_description($link['description'], $GLOBALS['redirector']) .
785 $descriptionlink . ']]></description>' . "\n</item>\n";
45034273
SS		 786 $i++;
787 }
482d67bd 788 echo '</channel></rss><!-- Cached version of '.escape(page_url($_SERVER)).' -->';
45034273
SS		 789
790 $cache->cache(ob_get_contents());
791 ob_end_flush();
792 exit;
793}
794
795// ------------------------------------------------------------------------------------------
ad6c27b7 796// Output the last N links in ATOM format.
45034273
SS		 797function showATOM()
798{
799 header('Content-Type: application/atom+xml; charset=utf-8');
800
2abd3905 801 // $usepermalink : If true, use permalink instead of final link.
ad6c27b7 802 // User just has to add 'permalink' in URL parameters. e.g. http://mysite.com/shaarli/?do=atom&permalinks
ed5b38dd 803 $usepermalinks = isset($_GET['permalinks']) || !$GLOBALS['config']['ENABLE_RSS_PERMALINKS'];
2abd3905 804
45034273
SS		 805 // Cache system
806 $query = $_SERVER["QUERY_STRING"];
01e48f26
V		 807 $cache = new CachedPage(
808 $GLOBALS['config']['PAGECACHE'],
482d67bd 809 page_url($_SERVER),
01e48f26
V		 810 startsWith($query,'do=atom') && !isLoggedIn()
811 );
812 $cached = $cache->cachedVersion();
813 if (!empty($cached)) {
814 echo $cached;
815 exit;
816 }
45034273 817
01e48f26
V		 818 // If cached was not found (or not usable), then read the database and build the response:
819 // Read links from database (and filter private links if used it not logged in).
9f15ca9e 820 $LINKSDB = new LinkDB(
9c8752a2 821 $GLOBALS['config']['DATASTORE'],
02ad8fb6 822 isLoggedIn(),
90e5bd65
A		 823 $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
824 $GLOBALS['redirector']
9f15ca9e 825 );
45034273 826
ad6c27b7 827 // Optionally filter the results:
822bffce
A		 828 if (!empty($_GET['searchterm'])) {
829 $linksToDisplay = $LINKSDB->filter(LinkFilter::$FILTER_TEXT, $_GET['searchterm']);
830 }
831 else if (!empty($_GET['searchtags'])) {
832 $linksToDisplay = $LINKSDB->filter(LinkFilter::$FILTER_TAG, trim($_GET['searchtags']));
833 }
834 else {
835 $linksToDisplay = $LINKSDB;
836 }
f3db3774 837
c677013b 838 $nblinksToDisplay = 50; // Number of links to display.
822bffce
A		 839 // In URL, you can specificy the number of links. Example: nb=200 or nb=all for all links.
840 if (!empty($_GET['nb'])) {
841 $nblinksToDisplay = $_GET['nb']=='all' ? count($linksToDisplay) : max(intval($_GET['nb']), 1);
c677013b 842 }
45034273 843
482d67bd 844 $pageaddr=escape(index_url($_SERVER));
45034273
SS		 845 $latestDate = '';
846 $entries='';
847 $i=0;
848 $keys=array(); foreach($linksToDisplay as $key=>$value) { $keys[]=$key; } // No, I can't use array_keys().
fbd9e527 849 while ($i<$nblinksToDisplay && $i<count($keys))
45034273
SS		 850 {
851 $link = $linksToDisplay[$keys[$i]];
852 $guid = $pageaddr.'?'.smallHash($link['linkdate']);
853 $iso8601date = linkdate2iso8601($link['linkdate']);
854 $latestDate = max($latestDate,$iso8601date);
5f85fcd8 855 $absurl = $link['url'];
45034273 856 if (startsWith($absurl,'?')) $absurl=$pageaddr.$absurl; // make permalink URL absolute
5f85fcd8 857 $entries.='<entry><title>'.$link['title'].'</title>';
2abd3905
SS		 858 if ($usepermalinks===true)
859 $entries.='<link href="'.$guid.'" /><id>'.$guid.'</id>';
860 else
861 $entries.='<link href="'.$absurl.'" /><id>'.$guid.'</id>';
5f85fcd8 862 if (!$GLOBALS['config']['HIDE_TIMESTAMPS'] || isLoggedIn()) $entries.='<updated>'.escape($iso8601date).'</updated>';
2abd3905
SS		 863
864 // Add permalink in description
5f85fcd8 865 $descriptionlink = '(<a href="'.$guid.'">Permalink</a>)';
2abd3905 866 // If user wants permalinks first, put the final link in description
5f85fcd8
A		 867 if ($usepermalinks===true) $descriptionlink = '(<a href="'.$absurl.'">Link</a>)';
868 if (strlen($link['description'])>0) $descriptionlink = '<br>'.$descriptionlink;
2abd3905 869
90e5bd65
A		 870 $entries .= '<content type="html"><![CDATA['.
871 format_description($link['description'], $GLOBALS['redirector']) .
872 $descriptionlink . "]]></content>\n";
45034273
SS		 873 if ($link['tags']!='') // Adding tags to each ATOM entry (as mentioned in ATOM specification)
874 {
875 foreach(explode(' ',$link['tags']) as $tag)
5f85fcd8 876 { $entries.='<category scheme="'.$pageaddr.'" term="'.$tag.'" />'."\n"; }
45034273
SS		 877 }
878 $entries.="</entry>\n";
879 $i++;
880 }
881 $feed='<?xml version="1.0" encoding="UTF-8"?><feed xmlns="http://www.w3.org/2005/Atom">';
5f85fcd8
A		 882 $feed.='<title>'.$GLOBALS['title'].'</title>';
883 if (!$GLOBALS['config']['HIDE_TIMESTAMPS'] || isLoggedIn()) $feed.='<updated>'.escape($latestDate).'</updated>';
482d67bd 884 $feed.='<link rel="self" href="'.escape(server_url($_SERVER).$_SERVER["REQUEST_URI"]).'" />';
45034273
SS		 885 if (!empty($GLOBALS['config']['PUBSUBHUB_URL']))
886 {
887 $feed.='<!-- PubSubHubbub Discovery -->';
5f85fcd8 888 $feed.='<link rel="hub" href="'.escape($GLOBALS['config']['PUBSUBHUB_URL']).'" />';
45034273
SS		 889 $feed.='<!-- End Of PubSubHubbub Discovery -->';
890 }
5f85fcd8
A		 891 $feed.='<author><name>'.$pageaddr.'</name><uri>'.$pageaddr.'</uri></author>';
892 $feed.='<id>'.$pageaddr.'</id>'."\n\n"; // Yes, I know I should use a real IRI (RFC3987), but the site URL will do.
45034273 893 $feed.=$entries;
482d67bd 894 $feed.='</feed><!-- Cached version of '.escape(page_url($_SERVER)).' -->';
45034273 895 echo $feed;
bb8f712d 896
45034273
SS		 897 $cache->cache(ob_get_contents());
898 ob_end_flush();
899 exit;
900}
901
902// ------------------------------------------------------------------------------------------
903// Daily RSS feed: 1 RSS entry per day giving all the links on that day.
904// Gives the last 7 days (which have links).
905// This RSS feed cannot be filtered.
f3b8f9f0 906function showDailyRSS() {
45034273
SS		 907 // Cache system
908 $query = $_SERVER["QUERY_STRING"];
01e48f26
V		 909 $cache = new CachedPage(
910 $GLOBALS['config']['PAGECACHE'],
482d67bd 911 page_url($_SERVER),
01e48f26
V		 912 startsWith($query,'do=dailyrss') && !isLoggedIn()
913 );
f3b8f9f0
A		 914 $cached = $cache->cachedVersion();
915 if (!empty($cached)) {
916 echo $cached;
917 exit;
918 }
9f15ca9e 919
f3b8f9f0
A		 920 // If cached was not found (or not usable), then read the database and build the response:
921 // Read links from database (and filter private links if used it not logged in).
9f15ca9e 922 $LINKSDB = new LinkDB(
9c8752a2 923 $GLOBALS['config']['DATASTORE'],
02ad8fb6 924 isLoggedIn(),
90e5bd65
A		 925 $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
926 $GLOBALS['redirector']
9f15ca9e 927 );
bb8f712d 928
45034273
SS		 929 /* Some Shaarlies may have very few links, so we need to look
930 back in time (rsort()) until we have enough days ($nb_of_days).
931 */
f3b8f9f0
A		 932 $linkdates = array();
933 foreach ($LINKSDB as $linkdate => $value) {
934 $linkdates[] = $linkdate;
935 }
45034273 936 rsort($linkdates);
f3b8f9f0
A		 937 $nb_of_days = 7; // We take 7 days.
938 $today = Date('Ymd');
939 $days = array();
940
941 foreach ($linkdates as $linkdate) {
942 $day = substr($linkdate, 0, 8); // Extract day (without time)
943 if (strcmp($day,$today) < 0) {
944 if (empty($days[$day])) {
945 $days[$day] = array();
946 }
947 $days[$day][] = $linkdate;
948 }
949
950 if (count($days) > $nb_of_days) {
951 break; // Have we collected enough days?
45034273 952 }
45034273 953 }
bb8f712d 954
45034273
SS		 955 // Build the RSS feed.
956 header('Content-Type: application/rss+xml; charset=utf-8');
482d67bd 957 $pageaddr = escape(index_url($_SERVER));
45034273 958 echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0">';
f3b8f9f0
A		 959 echo '<channel>';
960 echo '<title>Daily - '. $GLOBALS['title'] . '</title>';
961 echo '<link>'. $pageaddr .'</link>';
962 echo '<description>Daily shared links</description>';
963 echo '<language>en-en</language>';
964 echo '<copyright>'. $pageaddr .'</copyright>'. PHP_EOL;
965
966 // For each day.
967 foreach ($days as $day => $linkdates) {
968 $daydate = linkdate2timestamp($day.'_000000'); // Full text date
45034273 969 $rfc822date = linkdate2rfc822($day.'_000000');
482d67bd 970 $absurl = escape(index_url($_SERVER).'?do=daily&day='.$day); // Absolute URL of the corresponding "Daily" page.
bb8f712d 971
45034273 972 // Build the HTML body of this RSS entry.
f3b8f9f0
A		 973 $html = '';
974 $href = '';
975 $links = array();
976
45034273 977 // We pre-format some fields for proper output.
f3b8f9f0 978 foreach ($linkdates as $linkdate) {
45034273 979 $l = $LINKSDB[$linkdate];
90e5bd65 980 $l['formatedDescription'] = format_description($l['description'], $GLOBALS['redirector']);
bb8f712d 981 $l['thumbnail'] = thumbnail($l['url']);
a5752e77 982 $l['timestamp'] = linkdate2timestamp($l['linkdate']);
f3b8f9f0 983 if (startsWith($l['url'], '?')) {
482d67bd 984 $l['url'] = index_url($_SERVER) . $l['url']; // make permalink URL absolute
f3b8f9f0
A		 985 }
986 $links[$linkdate] = $l;
45034273 987 }
f3b8f9f0 988
45034273 989 // Then build the HTML for this day:
bb8f712d 990 $tpl = new RainTPL;
f3b8f9f0
A		 991 $tpl->assign('title', $GLOBALS['title']);
992 $tpl->assign('daydate', $daydate);
993 $tpl->assign('absurl', $absurl);
994 $tpl->assign('links', $links);
995 $tpl->assign('rfc822date', escape($rfc822date));
996 $html = $tpl->draw('dailyrss', $return_string=true);
45034273 997
f3b8f9f0 998 echo $html . PHP_EOL;
bb8f712d 999 }
482d67bd 1000 echo '</channel></rss><!-- Cached version of '. escape(page_url($_SERVER)) .' -->';
bb8f712d 1001
45034273
SS		 1002 $cache->cache(ob_get_contents());
1003 ob_end_flush();
1004 exit;
1005}
1006
38603b24
A		 1007/**
1008 * Show the 'Daily' page.
1009 *
1010 * @param PageBuilder $pageBuilder Template engine wrapper.
1011 */
1012function showDaily($pageBuilder)
45034273 1013{
9f15ca9e 1014 $LINKSDB = new LinkDB(
9c8752a2 1015 $GLOBALS['config']['DATASTORE'],
02ad8fb6 1016 isLoggedIn(),
90e5bd65
A		 1017 $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
1018 $GLOBALS['redirector']
9f15ca9e 1019 );
45034273
SS		 1020
1021 $day=Date('Ymd',strtotime('-1 day')); // Yesterday, in format YYYYMMDD.
1022 if (isset($_GET['day'])) $day=$_GET['day'];
bb8f712d 1023
45034273
SS		 1024 $days = $LINKSDB->days();
1025 $i = array_search($day,$days);
f3db3774 1026 if ($i===false) { $i=count($days)-1; $day=$days[$i]; }
bb8f712d
KT		 1027 $previousday='';
1028 $nextday='';
45034273
SS		 1029 if ($i!==false)
1030 {
f3db3774 1031 if ($i>=1) $previousday=$days[$i-1];
45034273
SS		 1032 if ($i<count($days)-1) $nextday=$days[$i+1];
1033 }
1034
9186ab95 1035 try {
822bffce 1036 $linksToDisplay = $LINKSDB->filter(LinkFilter::$FILTER_DAY, $day);
9186ab95
V		 1037 } catch (Exception $exc) {
1038 error_log($exc);
d1e2f8e5 1039 $linksToDisplay = array();
9186ab95
V		 1040 }
1041
45034273
SS		 1042 // We pre-format some fields for proper output.
1043 foreach($linksToDisplay as $key=>$link)
1044 {
5f85fcd8 1045
dd62b9ba
SS		 1046 $taglist = explode(' ',$link['tags']);
1047 uasort($taglist, 'strcasecmp');
1048 $linksToDisplay[$key]['taglist']=$taglist;
90e5bd65 1049 $linksToDisplay[$key]['formatedDescription'] = format_description($link['description'], $GLOBALS['redirector']);
bb8f712d 1050 $linksToDisplay[$key]['thumbnail'] = thumbnail($link['url']);
a5752e77 1051 $linksToDisplay[$key]['timestamp'] = linkdate2timestamp($link['linkdate']);
45034273 1052 }
bb8f712d 1053
45034273 1054 /* We need to spread the articles on 3 columns.
ad6c27b7 1055 I did not want to use a JavaScript lib like http://masonry.desandro.com/
bb8f712d 1056 so I manually spread entries with a simple method: I roughly evaluate the
45034273
SS		 1057 height of a div according to title and description length.
1058 */
1059 $columns=array(array(),array(),array()); // Entries to display, for each column.
1060 $fill=array(0,0,0); // Rough estimate of columns fill.
1061 foreach($linksToDisplay as $key=>$link)
1062 {
1063 // Roughly estimate length of entry (by counting characters)
1064 // Title: 30 chars = 1 line. 1 line is 30 pixels height.
1065 // Description: 836 characters gives roughly 342 pixel height.
ad6c27b7 1066 // This is not perfect, but it's usually OK.
45034273
SS		 1067 $length=strlen($link['title'])+(342*strlen($link['description']))/836;
1068 if ($link['thumbnail']) $length +=100; // 1 thumbnails roughly takes 100 pixels height.
1069 // Then put in column which is the less filled:
1070 $smallest=min($fill); // find smallest value in array.
1071 $index=array_search($smallest,$fill); // find index of this smallest value.
1072 array_push($columns[$index],$link); // Put entry in this column.
1073 $fill[$index]+=$length;
1074 }
38603b24 1075
6fc14d53
A		 1076 $data = array(
1077 'linksToDisplay' => $linksToDisplay,
1078 'linkcount' => count($LINKSDB),
1079 'cols' => $columns,
1080 'day' => linkdate2timestamp($day.'_000000'),
1081 'previousday' => $previousday,
1082 'nextday' => $nextday,
1083 );
1084 $pluginManager = PluginManager::getInstance();
1085 $pluginManager->executeHooks('render_daily', $data, array('loggedin' => isLoggedIn()));
1086
1087 foreach ($data as $key => $value) {
38603b24 1088 $pageBuilder->assign($key, $value);
6fc14d53
A		 1089 }
1090
38603b24 1091 $pageBuilder->renderPage('daily');
45034273
SS		 1092 exit;
1093}
1094
6fc14d53
A		 1095// Renders the linklist
1096function showLinkList($PAGE, $LINKSDB) {
1097 buildLinkList($PAGE,$LINKSDB); // Compute list of links to display
1098 $PAGE->renderPage('linklist');
1099}
1100
45034273
SS		 1101
1102// ------------------------------------------------------------------------------------------
1103// Render HTML page (according to URL parameters and user rights)
1104function renderPage()
1105{
9f15ca9e 1106 $LINKSDB = new LinkDB(
9c8752a2 1107 $GLOBALS['config']['DATASTORE'],
02ad8fb6 1108 isLoggedIn(),
90e5bd65
A		 1109 $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
1110 $GLOBALS['redirector']
9f15ca9e 1111 );
45034273 1112
6fc14d53
A		 1113 $PAGE = new pageBuilder;
1114
1115 // Determine which page will be rendered.
1116 $query = (isset($_SERVER['QUERY_STRING'])) ? $_SERVER['QUERY_STRING'] : '';
1117 $targetPage = Router::findPage($query, $_GET, isLoggedIn());
1118
1119 // Call plugin hooks for header, footer and includes, specifying which page will be rendered.
1120 // Then assign generated data to RainTPL.
1121 $common_hooks = array(
1122 'header',
1123 'footer',
1124 'includes',
1125 );
1126 $pluginManager = PluginManager::getInstance();
1127 foreach($common_hooks as $name) {
1128 $plugin_data = array();
1129 $pluginManager->executeHooks('render_' . $name, $plugin_data,
1130 array(
1131 'target' => $targetPage,
1132 'loggedin' => isLoggedIn()
1133 )
1134 );
1135 $PAGE->assign('plugins_' . $name, $plugin_data);
1136 }
1137
45034273 1138 // -------- Display login form.
6fc14d53 1139 if ($targetPage == Router::$PAGE_LOGIN)
45034273
SS		 1140 {
1141 if ($GLOBALS['config']['OPEN_SHAARLI']) { header('Location: ?'); exit; } // No need to login for open Shaarli
1142 $token=''; if (ban_canLogin()) $token=getToken(); // Do not waste token generation if not useful.
45034273 1143 $PAGE->assign('token',$token);
5f85fcd8 1144 $PAGE->assign('returnurl',(isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']):''));
45034273
SS		 1145 $PAGE->renderPage('loginform');
1146 exit;
1147 }
1148 // -------- User wants to logout.
1149 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=logout'))
1150 {
01e48f26 1151 invalidateCaches($GLOBALS['config']['PAGECACHE']);
45034273
SS		 1152 logout();
1153 header('Location: ?');
1154 exit;
1155 }
1156
1157 // -------- Picture wall
6fc14d53 1158 if ($targetPage == Router::$PAGE_PICWALL)
45034273 1159 {
ad6c27b7 1160 // Optionally filter the results:
822bffce
A		 1161 if (!empty($_GET['searchterm'])) {
1162 $links = $LINKSDB->filter(LinkFilter::$FILTER_TEXT, $_GET['searchterm']);
1163 }
1164 elseif (! empty($_GET['searchtags'])) {
1165 $links = $LINKSDB->filter(LinkFilter::$FILTER_TAG, trim($_GET['searchtags']));
1166 }
1167 else {
1168 $links = $LINKSDB;
1169 }
f3db3774 1170
822bffce 1171 $linksToDisplay = array();
45034273
SS		 1172
1173 // Get only links which have a thumbnail.
1174 foreach($links as $link)
1175 {
5f85fcd8 1176 $permalink='?'.escape(smallhash($link['linkdate']));
45034273
SS		 1177 $thumb=lazyThumbnail($link['url'],$permalink);
1178 if ($thumb!='') // Only output links which have a thumbnail.
1179 {
1180 $link['thumbnail']=$thumb; // Thumbnail HTML code.
45034273
SS		 1181 $linksToDisplay[]=$link; // Add to array.
1182 }
1183 }
f3db3774 1184
6fc14d53
A		 1185 $data = array(
1186 'linkcount' => count($LINKSDB),
1187 'linksToDisplay' => $linksToDisplay,
1188 );
1189 $pluginManager->executeHooks('render_picwall', $data, array('loggedin' => isLoggedIn()));
1190
1191 foreach ($data as $key => $value) {
1192 $PAGE->assign($key, $value);
1193 }
1194
45034273
SS		 1195 $PAGE->renderPage('picwall');
1196 exit;
1197 }
1198
1199 // -------- Tag cloud
6fc14d53 1200 if ($targetPage == Router::$PAGE_TAGCLOUD)
45034273
SS		 1201 {
1202 $tags= $LINKSDB->allTags();
a037ac69 1203
45034273
SS		 1204 // We sort tags alphabetically, then choose a font size according to count.
1205 // First, find max value.
f1e96a06
A		 1206 $maxcount = 0;
1207 foreach ($tags as $value) {
1208 $maxcount = max($maxcount, $value);
1209 }
1210
1211 // Sort tags alphabetically: case insensitive, support locale if avalaible.
1212 uksort($tags, function($a, $b) {
1213 // Collator is part of PHP intl.
1214 if (class_exists('Collator')) {
1215 $c = new Collator(setlocale(LC_ALL, 0));
1216 return $c->compare($a, $b);
1217 } else {
1218 return strcasecmp($a, $b);
1219 }
1220 });
1221
45034273
SS		 1222 $tagList=array();
1223 foreach($tags as $key=>$value)
f1e96a06 1224 // Tag font size scaling: default 15 and 30 logarithm bases affect scaling, 22 and 6 are arbitrary font sizes for max and min sizes.
45034273 1225 {
1e3b2740 1226 $tagList[$key] = array('count'=>$value,'size'=>log($value, 15) / log($maxcount, 30) * (22-6) + 6);
45034273 1227 }
6fc14d53
A		 1228
1229 $data = array(
1230 'linkcount' => count($LINKSDB),
1231 'tags' => $tagList,
1232 );
1233 $pluginManager->executeHooks('render_tagcloud', $data, array('loggedin' => isLoggedIn()));
1234
1235 foreach ($data as $key => $value) {
1236 $PAGE->assign($key, $value);
1237 }
1238
45034273 1239 $PAGE->renderPage('tagcloud');
bb8f712d 1240 exit;
45034273
SS		 1241 }
1242
38603b24
A		 1243 // Daily page.
1244 if ($targetPage == Router::$PAGE_DAILY) {
1245 showDaily($PAGE);
1246 }
1247
8f8113b9
A		 1248 // Display openseach plugin (XML)
1249 if ($targetPage == Router::$PAGE_OPENSEARCH) {
1250 header('Content-Type: application/xml; charset=utf-8');
1251 $PAGE->assign('serverurl', index_url($_SERVER));
1252 $PAGE->renderPage('opensearch');
1253 exit;
1254 }
1255
45034273
SS		 1256 // -------- User clicks on a tag in a link: The tag is added to the list of searched tags (searchtags=...)
1257 if (isset($_GET['addtag']))
1258 {
1259 // Get previous URL (http_referer) and add the tag to the searchtags parameters in query.
1260 if (empty($_SERVER['HTTP_REFERER'])) { header('Location: ?searchtags='.urlencode($_GET['addtag'])); exit; } // In case browser does not send HTTP_REFERER
1261 parse_str(parse_url($_SERVER['HTTP_REFERER'],PHP_URL_QUERY), $params);
732e683b 1262
775803a0
A		 1263 // Prevent redirection loop
1264 if (isset($params['addtag'])) {
1265 unset($params['addtag']);
1266 }
1267
732e683b
FE		 1268 // Check if this tag is already in the search query and ignore it if it is.
1269 // Each tag is always separated by a space
6ac95d9c
A		 1270 if (isset($params['searchtags'])) {
1271 $current_tags = explode(' ', $params['searchtags']);
1272 } else {
1273 $current_tags = array();
1274 }
732e683b
FE		 1275 $addtag = true;
1276 foreach ($current_tags as $value) {
1277 if ($value === $_GET['addtag']) {
1278 $addtag = false;
1279 break;
1280 }
1281 }
1282 // Append the tag if necessary
1283 if (empty($params['searchtags'])) {
1284 $params['searchtags'] = trim($_GET['addtag']);
1285 }
1286 else if ($addtag) {
1287 $params['searchtags'] = trim($params['searchtags']).' '.trim($_GET['addtag']);
1288 }
1289
45034273
SS		 1290 unset($params['page']); // We also remove page (keeping the same page has no sense, since the results are different)
1291 header('Location: ?'.http_build_query($params));
1292 exit;
1293 }
1294
1295 // -------- User clicks on a tag in result count: Remove the tag from the list of searched tags (searchtags=...)
775803a0 1296 if (isset($_GET['removetag'])) {
45034273 1297 // Get previous URL (http_referer) and remove the tag from the searchtags parameters in query.
775803a0
A		 1298 if (empty($_SERVER['HTTP_REFERER'])) {
1299 header('Location: ?');
1300 exit;
1301 }
1302
1303 // In case browser does not send HTTP_REFERER
1304 parse_str(parse_url($_SERVER['HTTP_REFERER'], PHP_URL_QUERY), $params);
1305
1306 // Prevent redirection loop
1307 if (isset($params['removetag'])) {
1308 unset($params['removetag']);
1309 }
1310
1311 if (isset($params['searchtags'])) {
822bffce 1312 $tags = explode(' ', $params['searchtags']);
2c75f8e7
A		 1313 // Remove value from array $tags.
1314 $tags = array_diff($tags, array($_GET['removetag']));
1315 $params['searchtags'] = implode(' ',$tags);
1316
1317 if (empty($params['searchtags'])) {
775803a0 1318 unset($params['searchtags']);
775803a0 1319 }
2c75f8e7 1320
45034273
SS		 1321 unset($params['page']); // We also remove page (keeping the same page has no sense, since the results are different)
1322 }
1323 header('Location: ?'.http_build_query($params));
1324 exit;
1325 }
1326
1327 // -------- User wants to change the number of links per page (linksperpage=...)
775803a0
A		 1328 if (isset($_GET['linksperpage'])) {
1329 if (is_numeric($_GET['linksperpage'])) {
1330 $_SESSION['LINKS_PER_PAGE']=abs(intval($_GET['linksperpage']));
1331 }
1332
1333 header('Location: '. generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('linksperpage')));
45034273
SS		 1334 exit;
1335 }
bb8f712d 1336
45034273 1337 // -------- User wants to see only private links (toggle)
775803a0
A		 1338 if (isset($_GET['privateonly'])) {
1339 if (empty($_SESSION['privateonly'])) {
1340 $_SESSION['privateonly'] = 1; // See only private links
1341 } else {
45034273
SS		 1342 unset($_SESSION['privateonly']); // See all links
1343 }
775803a0
A		 1344
1345 header('Location: '. generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('privateonly')));
45034273
SS		 1346 exit;
1347 }
1348
1349 // -------- Handle other actions allowed for non-logged in users:
1350 if (!isLoggedIn())
1351 {
ad6c27b7 1352 // User tries to post new link but is not logged in:
45034273
SS		 1353 // Show login screen, then redirect to ?post=...
1354 if (isset($_GET['post']))
1355 {
a1795ddc 1356 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($_GET['source']):'')); // Redirect to login page, then back to post link.
45034273
SS		 1357 exit;
1358 }
aedc912d
FE		 1359
1360 // Same case as above except that user tried to access ?do=addlink without being logged in
1361 // Note: passing empty parameters makes Shaarli generate default URLs and descriptions.
1362 if (isset($_GET['do']) && $_GET['do'] === 'addlink') {
1363 header('Location: ?do=login&post=');
1364 exit;
1365 }
6fc14d53 1366 showLinkList($PAGE, $LINKSDB);
5fbabbb9
A		 1367 if (isset($_GET['edit_link'])) {
1368 header('Location: ?do=login&edit_link='. escape($_GET['edit_link']));
1369 exit;
1370 }
1371
ad6c27b7 1372 exit; // Never remove this one! All operations below are reserved for logged in user.
45034273
SS		 1373 }
1374
1375 // -------- All other functions are reserved for the registered user:
1376
1377 // -------- Display the Tools menu if requested (import/export/bookmarklet...)
6fc14d53 1378 if ($targetPage == Router::$PAGE_TOOLS)
45034273 1379 {
6fc14d53
A		 1380 $data = array(
1381 'linkcount' => count($LINKSDB),
1382 'pageabsaddr' => index_url($_SERVER),
1383 );
1384 $pluginManager->executeHooks('render_tools', $data);
1385
1386 foreach ($data as $key => $value) {
1387 $PAGE->assign($key, $value);
1388 }
1389
45034273
SS		 1390 $PAGE->renderPage('tools');
1391 exit;
1392 }
1393
1394 // -------- User wants to change his/her password.
6fc14d53 1395 if ($targetPage == Router::$PAGE_CHANGEPASSWORD)
45034273
SS		 1396 {
1397 if ($GLOBALS['config']['OPEN_SHAARLI']) die('You are not supposed to change a password on an Open Shaarli.');
1398 if (!empty($_POST['setpassword']) && !empty($_POST['oldpassword']))
1399 {
ad6c27b7 1400 if (!tokenOk($_POST['token'])) die('Wrong token.'); // Go away!
45034273
SS		 1401
1402 // Make sure old password is correct.
1403 $oldhash = sha1($_POST['oldpassword'].$GLOBALS['login'].$GLOBALS['salt']);
fe16b01e 1404 if ($oldhash!=$GLOBALS['hash']) { echo '<script>alert("The old password is not correct.");document.location=\'?do=changepasswd\';</script>'; exit; }
45034273
SS		 1405 // Save new password
1406 $GLOBALS['salt'] = sha1(uniqid('',true).'_'.mt_rand()); // Salt renders rainbow-tables attacks useless.
1407 $GLOBALS['hash'] = sha1($_POST['setpassword'].$GLOBALS['login'].$GLOBALS['salt']);
dd484b90
A		 1408 try {
1409 writeConfig($GLOBALS, isLoggedIn());
1410 }
1411 catch(Exception $e) {
1412 error_log(
1413 'ERROR while writing config file after changing password.' . PHP_EOL .
1414 $e->getMessage()
1415 );
1416
1417 // TODO: do not handle exceptions/errors in JS.
1418 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do=tools\';</script>';
1419 exit;
1420 }
fe16b01e 1421 echo '<script>alert("Your password has been changed.");document.location=\'?do=tools\';</script>';
45034273
SS		 1422 exit;
1423 }
1424 else // show the change password form.
1425 {
45034273
SS		 1426 $PAGE->assign('linkcount',count($LINKSDB));
1427 $PAGE->assign('token',getToken());
1428 $PAGE->renderPage('changepassword');
1429 exit;
1430 }
1431 }
1432
1433 // -------- User wants to change configuration
6fc14d53 1434 if ($targetPage == Router::$PAGE_CONFIGURE)
45034273
SS		 1435 {
1436 if (!empty($_POST['title']) )
1437 {
ad6c27b7 1438 if (!tokenOk($_POST['token'])) die('Wrong token.'); // Go away!
45034273
SS		 1439 $tz = 'UTC';
1440 if (!empty($_POST['continent']) && !empty($_POST['city']))
d1e2f8e5 1441 if (isTimeZoneValid($_POST['continent'],$_POST['city']))
45034273
SS		 1442 $tz = $_POST['continent'].'/'.$_POST['city'];
1443 $GLOBALS['timezone'] = $tz;
1444 $GLOBALS['title']=$_POST['title'];
ebb2880d 1445 $GLOBALS['titleLink']=$_POST['titleLink'];
45034273
SS		 1446 $GLOBALS['redirector']=$_POST['redirector'];
1447 $GLOBALS['disablesessionprotection']=!empty($_POST['disablesessionprotection']);
bb8f712d 1448 $GLOBALS['privateLinkByDefault']=!empty($_POST['privateLinkByDefault']);
ed5b38dd 1449 $GLOBALS['config']['ENABLE_RSS_PERMALINKS']= !empty($_POST['enableRssPermalinks']);
329e0768 1450 $GLOBALS['config']['ENABLE_UPDATECHECK'] = !empty($_POST['updateCheck']);
caee7ff9 1451 $GLOBALS['config']['HIDE_PUBLIC_LINKS'] = !empty($_POST['hidePublicLinks']);
dd484b90
A		 1452 try {
1453 writeConfig($GLOBALS, isLoggedIn());
1454 }
1455 catch(Exception $e) {
1456 error_log(
1457 'ERROR while writing config file after configuration update.' . PHP_EOL .
1458 $e->getMessage()
1459 );
1460
1461 // TODO: do not handle exceptions/errors in JS.
1462 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do=tools\';</script>';
1463 exit;
1464 }
fe16b01e 1465 echo '<script>alert("Configuration was saved.");document.location=\'?do=tools\';</script>';
45034273
SS		 1466 exit;
1467 }
1468 else // Show the configuration form.
1469 {
45034273
SS		 1470 $PAGE->assign('linkcount',count($LINKSDB));
1471 $PAGE->assign('token',getToken());
5f85fcd8
A		 1472 $PAGE->assign('title', empty($GLOBALS['title']) ? '' : $GLOBALS['title'] );
1473 $PAGE->assign('redirector', empty($GLOBALS['redirector']) ? '' : $GLOBALS['redirector'] );
d1e2f8e5
V		 1474 list($timezone_form, $timezone_js) = generateTimeZoneForm($GLOBALS['timezone']);
1475 $PAGE->assign('timezone_form', $timezone_form);
45034273
SS		 1476 $PAGE->assign('timezone_js',$timezone_js);
1477 $PAGE->renderPage('configure');
1478 exit;
1479 }
1480 }
1481
1482 // -------- User wants to rename a tag or delete it
6fc14d53 1483 if ($targetPage == Router::$PAGE_CHANGETAG)
45034273 1484 {
6a6aa2b9
A		 1485 if (empty($_POST['fromtag']) || (empty($_POST['totag']) && isset($_POST['renametag']))) {
1486 $PAGE->assign('linkcount', count($LINKSDB));
1487 $PAGE->assign('token', getToken());
bdd1715b 1488 $PAGE->assign('tags', $LINKSDB->allTags());
45034273
SS		 1489 $PAGE->renderPage('changetag');
1490 exit;
1491 }
6a6aa2b9
A		 1492
1493 if (!tokenOk($_POST['token'])) {
1494 die('Wrong token.');
1495 }
45034273
SS		 1496
1497 // Delete a tag:
6a6aa2b9 1498 if (isset($_POST['deletetag']) && !empty($_POST['fromtag'])) {
45034273 1499 $needle=trim($_POST['fromtag']);
822bffce
A		 1500 // True for case-sensitive tag search.
1501 $linksToAlter = $LINKSDB->filter(LinkFilter::$FILTER_TAG, $needle, true);
45034273
SS		 1502 foreach($linksToAlter as $key=>$value)
1503 {
1504 $tags = explode(' ',trim($value['tags']));
1505 unset($tags[array_search($needle,$tags)]); // Remove tag.
1506 $value['tags']=trim(implode(' ',$tags));
1507 $LINKSDB[$key]=$value;
1508 }
2e28269b 1509 $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']);
fe16b01e 1510 echo '<script>alert("Tag was removed from '.count($linksToAlter).' links.");document.location=\'?\';</script>';
45034273
SS		 1511 exit;
1512 }
1513
1514 // Rename a tag:
6a6aa2b9 1515 if (isset($_POST['renametag']) && !empty($_POST['fromtag']) && !empty($_POST['totag'])) {
45034273 1516 $needle=trim($_POST['fromtag']);
822bffce
A		 1517 // True for case-sensitive tag search.
1518 $linksToAlter = $LINKSDB->filter(LinkFilter::$FILTER_TAG, $needle, true);
45034273
SS		 1519 foreach($linksToAlter as $key=>$value)
1520 {
1521 $tags = explode(' ',trim($value['tags']));
ad6c27b7 1522 $tags[array_search($needle,$tags)] = trim($_POST['totag']); // Replace tags value.
45034273
SS		 1523 $value['tags']=trim(implode(' ',$tags));
1524 $LINKSDB[$key]=$value;
1525 }
01e48f26 1526 $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']); // Save to disk.
fe16b01e 1527 echo '<script>alert("Tag was renamed in '.count($linksToAlter).' links.");document.location=\'?searchtags='.urlencode($_POST['totag']).'\';</script>';
45034273
SS		 1528 exit;
1529 }
1530 }
1531
ad6c27b7 1532 // -------- User wants to add a link without using the bookmarklet: Show form.
6fc14d53 1533 if ($targetPage == Router::$PAGE_ADDLINK)
45034273 1534 {
45034273
SS		 1535 $PAGE->assign('linkcount',count($LINKSDB));
1536 $PAGE->renderPage('addlink');
1537 exit;
1538 }
1539
1540 // -------- User clicked the "Save" button when editing a link: Save link to database.
1541 if (isset($_POST['save_edit']))
1542 {
ad6c27b7 1543 if (!tokenOk($_POST['token'])) die('Wrong token.'); // Go away!
45034273 1544 $tags = trim(preg_replace('/\s\s+/',' ', $_POST['lf_tags'])); // Remove multiple spaces.
781e8aad 1545 $tags = implode(' ', array_unique(explode(' ', $tags))); // Remove duplicates.
45034273 1546 $linkdate=$_POST['lf_linkdate'];
feebc6d4 1547 $url = trim($_POST['lf_url']);
f81139c9 1548 if (!startsWith($url,'http:') && !startsWith($url,'https:') && !startsWith($url,'ftp:') && !startsWith($url,'magnet:') && !startsWith($url,'?') && !startsWith($url,'javascript:'))
feebc6d4
SS		 1549 $url = 'http://'.$url;
1550 $link = array('title'=>trim($_POST['lf_title']),'url'=>$url,'description'=>trim($_POST['lf_description']),'private'=>(isset($_POST['lf_private']) ? 1 : 0),
45034273
SS		 1551 'linkdate'=>$linkdate,'tags'=>str_replace(',',' ',$tags));
1552 if ($link['title']=='') $link['title']=$link['url']; // If title is empty, use the URL as title.
6fc14d53
A		 1553
1554 $pluginManager->executeHooks('save_link', $link);
1555
45034273 1556 $LINKSDB[$linkdate] = $link;
01e48f26 1557 $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']); // Save to disk.
45034273
SS		 1558 pubsubhub();
1559
1560 // If we are called from the bookmarklet, we must close the popup:
d01c2342
A		 1561 if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) {
1562 echo '<script>self.close();</script>';
1563 exit;
1564 }
1565
1566 $returnurl = !empty($_POST['returnurl']) ? escape($_POST['returnurl']): '?';
775803a0 1567 $location = generateLocation($returnurl, $_SERVER['HTTP_HOST'], array('addlink', 'post', 'edit_link'));
d01c2342 1568 $location .= '#'.smallHash($_POST['lf_linkdate']); // Scroll to the link which has been edited.
775803a0 1569 header('Location: '. $location); // After saving the link, redirect to the page the user was on.
45034273
SS		 1570 exit;
1571 }
1572
1573 // -------- User clicked the "Cancel" button when editing a link.
1574 if (isset($_POST['cancel_edit']))
1575 {
ad6c27b7 1576 // If we are called from the bookmarklet, we must close the popup:
d33c5d4c 1577 if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) { echo '<script>self.close();</script>'; exit; }
45034273 1578 $returnurl = ( isset($_POST['returnurl']) ? $_POST['returnurl'] : '?' );
b342b2a4 1579 $returnurl .= '#'.smallHash($_POST['lf_linkdate']); // Scroll to the link which has been edited.
775803a0 1580 $returnurl = generateLocation($returnurl, $_SERVER['HTTP_HOST'], array('addlink', 'post', 'edit_link'));
45034273
SS		 1581 header('Location: '.$returnurl); // After canceling, redirect to the page the user was on.
1582 exit;
1583 }
1584
ad6c27b7 1585 // -------- User clicked the "Delete" button when editing a link: Delete link from database.
45034273
SS		 1586 if (isset($_POST['delete_link']))
1587 {
1588 if (!tokenOk($_POST['token'])) die('Wrong token.');
1589 // We do not need to ask for confirmation:
ad6c27b7 1590 // - confirmation is handled by JavaScript
45034273
SS		 1591 // - we are protected from XSRF by the token.
1592 $linkdate=$_POST['lf_linkdate'];
6fc14d53
A		 1593
1594 $pluginManager->executeHooks('delete_link', $LINKSDB[$linkdate]);
1595
45034273 1596 unset($LINKSDB[$linkdate]);
01e48f26 1597 $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']); // save to disk
45034273
SS		 1598
1599 // If we are called from the bookmarklet, we must close the popup:
d33c5d4c 1600 if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) { echo '<script>self.close();</script>'; exit; }
d528433d 1601 // Pick where we're going to redirect
1602 // =============================================================
1603 // Basically, we can't redirect to where we were previously if it was a permalink
1604 // or an edit_link, because it would 404.
1605 // Cases:
1606 // - / : nothing in $_GET, redirect to self
1607 // - /?page : redirect to self
d33c5d4c 1608 // - /?searchterm : redirect to self (there might be other links)
d528433d 1609 // - /?searchtags : redirect to self
1610 // - /permalink : redirect to / (the link does not exist anymore)
1611 // - /?edit_link : redirect to / (the link does not exist anymore)
1612 // PHP treats the permalink as a $_GET variable, so we need to check if every condition for self
1613 // redirect is not satisfied, and only then redirect to /
1614 $location = "?";
1615 // Self redirection
775803a0
A		 1616 if (count($_GET) == 0
1617 || isset($_GET['page'])
1618 || isset($_GET['searchterm'])
1619 || isset($_GET['searchtags'])
1620 ) {
d528433d 1621 if (isset($_POST['returnurl'])) {
1622 $location = $_POST['returnurl']; // Handle redirects given by the form
775803a0
A		 1623 } else {
1624 $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('delete_link'));
d528433d 1625 }
1626 }
1627
1628 header('Location: ' . $location); // After deleting the link, redirect to appropriate location
45034273
SS		 1629 exit;
1630 }
1631
1632 // -------- User clicked the "EDIT" button on a link: Display link edit form.
1633 if (isset($_GET['edit_link']))
1634 {
1635 $link = $LINKSDB[$_GET['edit_link']]; // Read database
1636 if (!$link) { header('Location: ?'); exit; } // Link not found in database.
6fc14d53
A		 1637 $data = array(
1638 'linkcount' => count($LINKSDB),
1639 'link' => $link,
1640 'link_is_new' => false,
1641 'token' => getToken(),
1642 'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
1643 'tags' => $LINKSDB->allTags(),
1644 );
1645 $pluginManager->executeHooks('render_editlink', $data);
1646
1647 foreach ($data as $key => $value) {
1648 $PAGE->assign($key, $value);
1649 }
1650
45034273
SS		 1651 $PAGE->renderPage('editlink');
1652 exit;
1653 }
1654
1655 // -------- User want to post a new link: Display link edit form.
d9d776af 1656 if (isset($_GET['post'])) {
1557cefb 1657 $url = cleanup_url(escape($_GET['post']));
45034273
SS		 1658
1659 $link_is_new = false;
9e1724f1 1660 // Check if URL is not already in database (in this case, we will edit the existing link)
ef591e7e 1661 $link = $LINKSDB->getLinkFromUrl($url);
45034273
SS		 1662 if (!$link)
1663 {
9e1724f1 1664 $link_is_new = true;
45034273 1665 $linkdate = strval(date('Ymd_His'));
9e1724f1 1666 // Get title if it was provided in URL (by the bookmarklet).
739dc243 1667 $title = empty($_GET['title']) ? '' : escape($_GET['title']);
9e1724f1 1668 // Get description if it was provided in URL (by the bookmarklet). [Bronco added that]
739dc243
A		 1669 $description = empty($_GET['description']) ? '' : escape($_GET['description']);
1670 $tags = empty($_GET['tags']) ? '' : escape($_GET['tags']);
1671 $private = !empty($_GET['private']) && $_GET['private'] === "1" ? 1 : 0;
26c50346 1672 // If this is an HTTP(S) link, we try go get the page to extract the title (otherwise we will to straight to the edit form.)
ef591e7e 1673 if (empty($title) && strpos(get_url_scheme($url), 'http') !== false) {
451314eb 1674 // Short timeout to keep the application responsive
1557cefb 1675 list($headers, $content) = get_http_response($url, 4);
451314eb 1676 if (strpos($headers[0], '200 OK') !== false) {
1557cefb
A		 1677 // Retrieve charset.
1678 $charset = get_charset($headers, $content);
1679 // Extract title.
1680 $title = html_extract_title($content);
1681 // Re-encode title in utf-8 if necessary.
1682 if (! empty($title) && $charset != 'utf-8') {
1683 $title = mb_convert_encoding($title, $charset, 'utf-8');
9e1724f1
A		 1684 }
1685 }
45034273 1686 }
1557cefb 1687
9e1724f1
A		 1688 if ($url == '') {
1689 $url = '?' . smallHash($linkdate);
1690 $title = 'Note: ';
27646ca5 1691 }
1557cefb 1692
9e1724f1
A		 1693 $link = array(
1694 'linkdate' => $linkdate,
1695 'title' => $title,
ef591e7e 1696 'url' => $url,
9e1724f1
A		 1697 'description' => $description,
1698 'tags' => $tags,
1699 'private' => $private
1700 );
45034273
SS		 1701 }
1702
6fc14d53
A		 1703 $data = array(
1704 'linkcount' => count($LINKSDB),
1705 'link' => $link,
1706 'link_is_new' => $link_is_new,
1707 'token' => getToken(), // XSRF protection.
1708 'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
1709 'source' => (isset($_GET['source']) ? $_GET['source'] : ''),
1710 'tags' => $LINKSDB->allTags(),
1711 );
1712 $pluginManager->executeHooks('render_editlink', $data);
1713
1714 foreach ($data as $key => $value) {
1715 $PAGE->assign($key, $value);
1716 }
1717
45034273
SS		 1718 $PAGE->renderPage('editlink');
1719 exit;
1720 }
1721
1722 // -------- Export as Netscape Bookmarks HTML file.
6fc14d53 1723 if ($targetPage == Router::$PAGE_EXPORT)
45034273
SS		 1724 {
1725 if (empty($_GET['what']))
1726 {
45034273
SS		 1727 $PAGE->assign('linkcount',count($LINKSDB));
1728 $PAGE->renderPage('export');
1729 exit;
1730 }
1731 $exportWhat=$_GET['what'];
ad6c27b7 1732 if (!array_intersect(array('all','public','private'),array($exportWhat))) die('What are you trying to export???');
45034273
SS		 1733
1734 header('Content-Type: text/html; charset=utf-8');
1735 header('Content-disposition: attachment; filename=bookmarks_'.$exportWhat.'_'.strval(date('Ymd_His')).'.html');
1736 $currentdate=date('Y/m/d H:i:s');
1737 echo <<<HTML
1738<!DOCTYPE NETSCAPE-Bookmark-file-1>
1739<!-- This is an automatically generated file.
1740 It will be read and overwritten.
1741 DO NOT EDIT! -->
1742<!-- Shaarli {$exportWhat} bookmarks export on {$currentdate} -->
1743<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8">
1744<TITLE>Bookmarks</TITLE>
1745<H1>Bookmarks</H1>
1746HTML;
1747 foreach($LINKSDB as $link)
1748 {
1749 if ($exportWhat=='all' ||
1750 ($exportWhat=='private' && $link['private']!=0) ||
1751 ($exportWhat=='public' && $link['private']==0))
1752 {
5f85fcd8
A		 1753 echo '<DT><A HREF="'.$link['url'].'" ADD_DATE="'.linkdate2timestamp($link['linkdate']).'" PRIVATE="'.$link['private'].'"';
1754 if ($link['tags']!='') echo ' TAGS="'.str_replace(' ',',',$link['tags']).'"';
1755 echo '>'.$link['title']."</A>\n";
1756 if ($link['description']!='') echo '<DD>'.$link['description']."\n";
45034273
SS		 1757 }
1758 }
1759 exit;
1760 }
1761
1762 // -------- User is uploading a file for import
1763 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=upload'))
1764 {
1765 // If file is too big, some form field may be missing.
1766 if (!isset($_POST['token']) || (!isset($_FILES)) || (isset($_FILES['filetoupload']['size']) && $_FILES['filetoupload']['size']==0))
1767 {
1768 $returnurl = ( empty($_SERVER['HTTP_REFERER']) ? '?' : $_SERVER['HTTP_REFERER'] );
5f85fcd8 1769 echo '<script>alert("The file you are trying to upload is probably bigger than what this webserver can accept ('.getMaxFileSize().' bytes). Please upload in smaller chunks.");document.location=\''.escape($returnurl).'\';</script>';
45034273
SS		 1770 exit;
1771 }
1772 if (!tokenOk($_POST['token'])) die('Wrong token.');
1773 importFile();
1774 exit;
1775 }
1776
1777 // -------- Show upload/import dialog:
6fc14d53 1778 if ($targetPage == Router::$PAGE_IMPORT)
45034273 1779 {
45034273
SS		 1780 $PAGE->assign('linkcount',count($LINKSDB));
1781 $PAGE->assign('token',getToken());
1782 $PAGE->assign('maxfilesize',getMaxFileSize());
1783 $PAGE->renderPage('import');
1784 exit;
1785 }
1786
dea0ba28
A		 1787 // Plugin administration page
1788 if ($targetPage == Router::$PAGE_PLUGINSADMIN) {
1789 $pluginMeta = $pluginManager->getPluginsMeta();
1790
1791 // Split plugins into 2 arrays: ordered enabled plugins and disabled.
1792 $enabledPlugins = array_filter($pluginMeta, function($v) { return $v['order'] !== false; });
1793 // Load parameters.
1794 $enabledPlugins = load_plugin_parameter_values($enabledPlugins, $GLOBALS['plugins']);
1795 uasort(
1796 $enabledPlugins,
1797 function($a, $b) { return $a['order'] - $b['order']; }
1798 );
1799 $disabledPlugins = array_filter($pluginMeta, function($v) { return $v['order'] === false; });
1800
1801 $PAGE->assign('enabledPlugins', $enabledPlugins);
1802 $PAGE->assign('disabledPlugins', $disabledPlugins);
1803 $PAGE->renderPage('pluginsadmin');
1804 exit;
1805 }
1806
1807 // Plugin administration form action
1808 if ($targetPage == Router::$PAGE_SAVE_PLUGINSADMIN) {
1809 try {
1810 if (isset($_POST['parameters_form'])) {
1811 unset($_POST['parameters_form']);
1812 foreach ($_POST as $param => $value) {
1813 $GLOBALS['plugins'][$param] = escape($value);
1814 }
1815 }
1816 else {
1817 $GLOBALS['config']['ENABLED_PLUGINS'] = save_plugin_config($_POST);
1818 }
1819 writeConfig($GLOBALS, isLoggedIn());
1820 }
1821 catch (Exception $e) {
1822 error_log(
1823 'ERROR while saving plugin configuration:.' . PHP_EOL .
1824 $e->getMessage()
1825 );
1826
1827 // TODO: do not handle exceptions/errors in JS.
1828 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do=pluginsadmin\';</script>';
1829 exit;
1830 }
1831 header('Location: ?do='. Router::$PAGE_PLUGINSADMIN);
1832 exit;
1833 }
1834
45034273 1835 // -------- Otherwise, simply display search form and links:
6fc14d53 1836 showLinkList($PAGE, $LINKSDB);
45034273
SS		 1837 exit;
1838}
1839
1840// -----------------------------------------------------------------------------------------------
1841// Process the import file form.
1842function importFile()
1843{
02ad8fb6 1844 if (!isLoggedIn()) { die('Not allowed.'); }
9f15ca9e 1845 $LINKSDB = new LinkDB(
9c8752a2 1846 $GLOBALS['config']['DATASTORE'],
02ad8fb6 1847 isLoggedIn(),
90e5bd65
A		 1848 $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
1849 $GLOBALS['redirector']
9f15ca9e 1850 );
45034273
SS		 1851 $filename=$_FILES['filetoupload']['name'];
1852 $filesize=$_FILES['filetoupload']['size'];
1853 $data=file_get_contents($_FILES['filetoupload']['tmp_name']);
ad6c27b7 1854 $private = (empty($_POST['private']) ? 0 : 1); // Should the links be imported as private?
1855 $overwrite = !empty($_POST['overwrite']) ; // Should the imported links overwrite existing ones?
45034273
SS		 1856 $import_count=0;
1857
1858 // Sniff file type:
1859 $type='unknown';
1860 if (startsWith($data,'<!DOCTYPE NETSCAPE-Bookmark-file-1>')) $type='netscape'; // Netscape bookmark file (aka Firefox).
1861
1862 // Then import the bookmarks.
1863 if ($type=='netscape')
1864 {
1865 // This is a standard Netscape-style bookmark file.
ad6c27b7 1866 // This format is supported by all browsers (except IE, of course), also Delicious, Diigo and others.
45034273
SS		 1867 foreach(explode('<DT>',$data) as $html) // explode is very fast
1868 {
1869 $link = array('linkdate'=>'','title'=>'','url'=>'','description'=>'','tags'=>'','private'=>0);
1870 $d = explode('<DD>',$html);
1871 if (startswith($d[0],'<A '))
1872 {
1873 $link['description'] = (isset($d[1]) ? html_entity_decode(trim($d[1]),ENT_QUOTES,'UTF-8') : ''); // Get description (optional)
1874 preg_match('!<A .*?>(.*?)</A>!i',$d[0],$matches); $link['title'] = (isset($matches[1]) ? trim($matches[1]) : ''); // Get title
1875 $link['title'] = html_entity_decode($link['title'],ENT_QUOTES,'UTF-8');
1876 preg_match_all('! ([A-Z_]+)=\"(.*?)"!i',$html,$matches,PREG_SET_ORDER); // Get all other attributes
1877 $raw_add_date=0;
1878 foreach($matches as $m)
1879 {
1880 $attr=$m[1]; $value=$m[2];
1881 if ($attr=='HREF') $link['url']=html_entity_decode($value,ENT_QUOTES,'UTF-8');
fc93ae1d
AA		 1882 elseif ($attr=='ADD_DATE')
1883 {
1884 $raw_add_date=intval($value);
1885 if ($raw_add_date>30000000000) $raw_add_date/=1000; //If larger than year 2920, then was likely stored in milliseconds instead of seconds
1886 }
45034273
SS		 1887 elseif ($attr=='PRIVATE') $link['private']=($value=='0'?0:1);
1888 elseif ($attr=='TAGS') $link['tags']=html_entity_decode(str_replace(',',' ',$value),ENT_QUOTES,'UTF-8');
1889 }
1890 if ($link['url']!='')
1891 {
1892 if ($private==1) $link['private']=1;
1893 $dblink = $LINKSDB->getLinkFromUrl($link['url']); // See if the link is already in database.
1894 if ($dblink==false)
1895 { // Link not in database, let's import it...
1896 if (empty($raw_add_date)) $raw_add_date=time(); // In case of shitty bookmark file with no ADD_DATE
1897
1898 // Make sure date/time is not already used by another link.
1899 // (Some bookmark files have several different links with the same ADD_DATE)
ad6c27b7 1900 // We increment date by 1 second until we find a date which is not used in DB.
45034273
SS		 1901 // (so that links that have the same date/time are more or less kept grouped by date, but do not conflict.)
1902 while (!empty($LINKSDB[date('Ymd_His',$raw_add_date)])) { $raw_add_date++; }// Yes, I know it's ugly.
1903 $link['linkdate']=date('Ymd_His',$raw_add_date);
1904 $LINKSDB[$link['linkdate']] = $link;
1905 $import_count++;
1906 }
ad6c27b7 1907 else // Link already present in database.
45034273
SS		 1908 {
1909 if ($overwrite)
1910 { // If overwrite is required, we import link data, except date/time.
1911 $link['linkdate']=$dblink['linkdate'];
1912 $LINKSDB[$link['linkdate']] = $link;
1913 $import_count++;
1914 }
1915 }
1916
1917 }
1918 }
1919 }
01e48f26 1920 $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']);
45034273 1921
fe16b01e 1922 echo '<script>alert("File '.json_encode($filename).' ('.$filesize.' bytes) was successfully processed: '.$import_count.' links imported.");document.location=\'?\';</script>';
45034273
SS		 1923 }
1924 else
1925 {
fe16b01e 1926 echo '<script>alert("File '.json_encode($filename).' ('.$filesize.' bytes) has an unknown file format. Nothing was imported.");document.location=\'?\';</script>';
45034273
SS		 1927 }
1928}
1929
1930// -----------------------------------------------------------------------------------------------
1931// Template for the list of links (<div id="linklist">)
1932// This function fills all the necessary fields in the $PAGE for the template 'linklist.html'
1933function buildLinkList($PAGE,$LINKSDB)
1934{
1935 // ---- Filter link database according to parameters
822bffce
A		 1936 $search_type = '';
1937 $search_crits = '';
1938 $privateonly = !empty($_SESSION['privateonly']) ? true : false;
1939
1940 // Fulltext search
1941 if (isset($_GET['searchterm'])) {
1942 $search_crits = escape(trim($_GET['searchterm']));
1943 $search_type = LinkFilter::$FILTER_TEXT;
1944 $linksToDisplay = $LINKSDB->filter($search_type, $search_crits, false, $privateonly);
1945 }
1946 // Search by tag
1947 elseif (isset($_GET['searchtags'])) {
1948 $search_crits = explode(' ', escape(trim($_GET['searchtags'])));
1949 $search_type = LinkFilter::$FILTER_TAG;
1950 $linksToDisplay = $LINKSDB->filter($search_type, $search_crits, false, $privateonly);
1951 }
1952 // Detect smallHashes in URL.
1953 elseif (isset($_SERVER['QUERY_STRING'])
1954 && preg_match('/[a-zA-Z0-9-_@]{6}(&.+?)?/', $_SERVER['QUERY_STRING'])) {
1955 $search_type = LinkFilter::$FILTER_HASH;
1956 $search_crits = substr(trim($_SERVER["QUERY_STRING"], '/'), 0, 6);
1957 $linksToDisplay = $LINKSDB->filter($search_type, $search_crits);
1958
1959 if (count($linksToDisplay) == 0) {
f4c84ad7 1960 $PAGE->render404('The link you are trying to reach does not exist or has been deleted.');
45034273
SS		 1961 exit;
1962 }
45034273 1963 }
822bffce
A		 1964 // Otherwise, display without filtering.
1965 else {
1966 $linksToDisplay = $LINKSDB->filter('', '', false, $privateonly);
45034273
SS		 1967 }
1968
1969 // ---- Handle paging.
822bffce
A		 1970 $keys = array();
1971 foreach ($linksToDisplay as $key => $value) {
1972 $keys[] = $key;
1973 }
45034273
SS		 1974
1975 // If there is only a single link, we change on-the-fly the title of the page.
822bffce
A		 1976 if (count($linksToDisplay) == 1) {
1977 $GLOBALS['pagetitle'] = $linksToDisplay[$keys[0]]['title'].' - '.$GLOBALS['title'];
1978 }
45034273
SS		 1979
1980 // Select articles according to paging.
822bffce
A		 1981 $pagecount = ceil(count($keys) / $_SESSION['LINKS_PER_PAGE']);
1982 $pagecount = $pagecount == 0 ? 1 : $pagecount;
1983 $page= empty($_GET['page']) ? 1 : intval($_GET['page']);
1984 $page = $page < 1 ? 1 : $page;
1985 $page = $page > $pagecount ? $pagecount : $page;
1986 // Start index.
1987 $i = ($page-1) * $_SESSION['LINKS_PER_PAGE'];
1988 $end = $i + $_SESSION['LINKS_PER_PAGE'];
1989 $linkDisp = array();
45034273
SS		 1990 while ($i<$end && $i<count($keys))
1991 {
1992 $link = $linksToDisplay[$keys[$i]];
90e5bd65 1993 $link['description'] = format_description($link['description'], $GLOBALS['redirector']);
822bffce
A		 1994 $classLi = ($i % 2) != 0 ? '' : 'publicLinkHightLight';
1995 $link['class'] = $link['private'] == 0 ? $classLi : 'private';
1996 $link['timestamp'] = linkdate2timestamp($link['linkdate']);
1997 $taglist = explode(' ', $link['tags']);
a5752e77 1998 uasort($taglist, 'strcasecmp');
822bffce 1999 $link['taglist'] = $taglist;
6fc14d53 2000 $link['shorturl'] = smallHash($link['linkdate']);
822bffce
A		 2001 // Check for both signs of a note: starting with ? and 7 chars long.
2002 if ($link['url'][0] === '?' &&
2003 strlen($link['url']) === 7) {
2004 $link['url'] = index_url($_SERVER) . $link['url'];
b47f515a 2005 }
d33c5d4c 2006
45034273
SS		 2007 $linkDisp[$keys[$i]] = $link;
2008 $i++;
2009 }
bb8f712d 2010
45034273 2011 // Compute paging navigation
822bffce
A		 2012 $searchterm = empty($_GET['searchterm']) ? '' : '&searchterm=' . $_GET['searchterm'];
2013 $searchtags = empty($_GET['searchtags']) ? '' : '&searchtags=' . $_GET['searchtags'];
2014 $previous_page_url = '';
2015 if ($i != count($keys)) {
2016 $previous_page_url = '?page=' . ($page+1) . $searchterm . $searchtags;
2017 }
2018 $next_page_url='';
2019 if ($page>1) {
2020 $next_page_url = '?page=' . ($page-1) . $searchterm . $searchtags;
2021 }
45034273 2022
822bffce
A		 2023 $token = '';
2024 if (isLoggedIn()) {
2025 $token = getToken();
2026 }
bb8f712d 2027
45034273 2028 // Fill all template fields.
6fc14d53
A		 2029 $data = array(
2030 'linkcount' => count($LINKSDB),
2031 'previous_page_url' => $previous_page_url,
2032 'next_page_url' => $next_page_url,
2033 'page_current' => $page,
2034 'page_max' => $pagecount,
2035 'result_count' => count($linksToDisplay),
2036 'search_type' => $search_type,
2037 'search_crits' => $search_crits,
2038 'redirector' => empty($GLOBALS['redirector']) ? '' : $GLOBALS['redirector'], // Optional redirector URL.
2039 'token' => $token,
2040 'links' => $linkDisp,
2041 'tags' => $LINKSDB->allTags(),
2042 );
18cca483
A		 2043 // FIXME! temporary fix - see #399.
2044 if (!empty($GLOBALS['pagetitle']) && count($linkDisp) == 1) {
2045 $data['pagetitle'] = $GLOBALS['pagetitle'];
2046 }
6fc14d53
A		 2047
2048 $pluginManager = PluginManager::getInstance();
2049 $pluginManager->executeHooks('render_linklist', $data, array('loggedin' => isLoggedIn()));
2050
2051 foreach ($data as $key => $value) {
2052 $PAGE->assign($key, $value);
2053 }
2054
45034273
SS		 2055 return;
2056}
2057
2058// Compute the thumbnail for a link.
bb8f712d 2059//
ad6c27b7 2060// With a link to the original URL.
45034273 2061// Understands various services (youtube.com...)
ad6c27b7 2062// Input: $url = URL for which the thumbnail must be found.
45034273
SS		 2063// $href = if provided, this URL will be followed instead of $url
2064// Returns an associative array with thumbnail attributes (src,href,width,height,style,alt)
2065// Some of them may be missing.
2066// Return an empty array if no thumbnail available.
2067function computeThumbnail($url,$href=false)
2068{
2069 if (!$GLOBALS['config']['ENABLE_THUMBNAILS']) return array();
2070 if ($href==false) $href=$url;
2071
2072 // For most hosts, the URL of the thumbnail can be easily deduced from the URL of the link.
ad6c27b7 2073 // (e.g. http://www.youtube.com/watch?v=spVypYk4kto ---> http://img.youtube.com/vi/spVypYk4kto/default.jpg )
45034273
SS		 2074 // ^^^^^^^^^^^ ^^^^^^^^^^^
2075 $domain = parse_url($url,PHP_URL_HOST);
2076 if ($domain=='youtube.com' || $domain=='www.youtube.com')
2077 {
2078 parse_str(parse_url($url,PHP_URL_QUERY), $params); // Extract video ID and get thumbnail
1a663a0f 2079 if (!empty($params['v'])) return array('src'=>'https://img.youtube.com/vi/'.$params['v'].'/default.jpg',
45034273
SS		 2080 'href'=>$href,'width'=>'120','height'=>'90','alt'=>'YouTube thumbnail');
2081 }
2082 if ($domain=='youtu.be') // Youtube short links
2083 {
2084 $path = parse_url($url,PHP_URL_PATH);
1a663a0f 2085 return array('src'=>'https://img.youtube.com/vi'.$path.'/default.jpg',
bb8f712d 2086 'href'=>$href,'width'=>'120','height'=>'90','alt'=>'YouTube thumbnail');
45034273
SS		 2087 }
2088 if ($domain=='pix.toile-libre.org') // pix.toile-libre.org image hosting
2089 {
2090 parse_str(parse_url($url,PHP_URL_QUERY), $params); // Extract image filename.
2091 if (!empty($params) && !empty($params['img'])) return array('src'=>'http://pix.toile-libre.org/upload/thumb/'.urlencode($params['img']),
bb8f712d
KT		 2092 'href'=>$href,'style'=>'max-width:120px; max-height:150px','alt'=>'pix.toile-libre.org thumbnail');
2093 }
2094
45034273
SS		 2095 if ($domain=='imgur.com')
2096 {
2097 $path = parse_url($url,PHP_URL_PATH);
2098 if (startsWith($path,'/a/')) return array(); // Thumbnails for albums are not available.
1a663a0f 2099 if (startsWith($path,'/r/')) return array('src'=>'https://i.imgur.com/'.basename($path).'s.jpg',
45034273 2100 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
1a663a0f 2101 if (startsWith($path,'/gallery/')) return array('src'=>'https://i.imgur.com'.substr($path,8).'s.jpg',
45034273
SS		 2102 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
2103
1a663a0f 2104 if (substr_count($path,'/')==1) return array('src'=>'https://i.imgur.com/'.substr($path,1).'s.jpg',
45034273
SS		 2105 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
2106 }
2107 if ($domain=='i.imgur.com')
2108 {
2109 $pi = pathinfo(parse_url($url,PHP_URL_PATH));
1a663a0f 2110 if (!empty($pi['filename'])) return array('src'=>'https://i.imgur.com/'.$pi['filename'].'s.jpg',
45034273
SS		 2111 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
2112 }
2113 if ($domain=='dailymotion.com' || $domain=='www.dailymotion.com')
2114 {
2115 if (strpos($url,'dailymotion.com/video/')!==false)
2116 {
2117 $thumburl=str_replace('dailymotion.com/video/','dailymotion.com/thumbnail/video/',$url);
2118 return array('src'=>$thumburl,
2119 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'DailyMotion thumbnail');
2120 }
2121 }
2122 if (endsWith($domain,'.imageshack.us'))
2123 {
2124 $ext=strtolower(pathinfo($url,PATHINFO_EXTENSION));
2125 if ($ext=='jpg' || $ext=='jpeg' || $ext=='png' || $ext=='gif')
2126 {
2127 $thumburl = substr($url,0,strlen($url)-strlen($ext)).'th.'.$ext;
2128 return array('src'=>$thumburl,
2129 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'imageshack.us thumbnail');
2130 }
2131 }
2132
2133 // Some other hosts are SLOW AS HELL and usually require an extra HTTP request to get the thumbnail URL.
2134 // So we deport the thumbnail generation in order not to slow down page generation
2135 // (and we also cache the thumbnail)
2136
2137 if (!$GLOBALS['config']['ENABLE_LOCALCACHE']) return array(); // If local cache is disabled, no thumbnails for services which require the use a local cache.
2138
2139 if ($domain=='flickr.com' || endsWith($domain,'.flickr.com')
2140 || $domain=='vimeo.com'
2141 || $domain=='ted.com' || endsWith($domain,'.ted.com')
2142 || $domain=='xkcd.com' || endsWith($domain,'.xkcd.com')
2143 )
2144 {
2145 if ($domain=='vimeo.com')
ad6c27b7 2146 { // Make sure this vimeo URL points to a video (/xxx... where xxx is numeric)
45034273
SS		 2147 $path = parse_url($url,PHP_URL_PATH);
2148 if (!preg_match('!/\d+.+?!',$path)) return array(); // This is not a single video URL.
2149 }
2150 if ($domain=='xkcd.com' || endsWith($domain,'.xkcd.com'))
ad6c27b7 2151 { // Make sure this URL points to a single comic (/xxx... where xxx is numeric)
45034273
SS		 2152 $path = parse_url($url,PHP_URL_PATH);
2153 if (!preg_match('!/\d+.+?!',$path)) return array();
2154 }
2155 if ($domain=='ted.com' || endsWith($domain,'.ted.com'))
ad6c27b7 2156 { // Make sure this TED URL points to a video (/talks/...)
45034273
SS		 2157 $path = parse_url($url,PHP_URL_PATH);
2158 if ("/talks/" !== substr($path,0,7)) return array(); // This is not a single video URL.
2159 }
2160 $sign = hash_hmac('sha256', $url, $GLOBALS['salt']); // We use the salt to sign data (it's random, secret, and specific to each installation)
482d67bd 2161 return array('src'=>index_url($_SERVER).'?do=genthumbnail&hmac='.$sign.'&url='.urlencode($url),
45034273
SS		 2162 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'thumbnail');
2163 }
2164
2165 // For all other, we try to make a thumbnail of links ending with .jpg/jpeg/png/gif
2166 // Technically speaking, we should download ALL links and check their Content-Type to see if they are images.
2167 // But using the extension will do.
2168 $ext=strtolower(pathinfo($url,PATHINFO_EXTENSION));
2169 if ($ext=='jpg' || $ext=='jpeg' || $ext=='png' || $ext=='gif')
2170 {
2171 $sign = hash_hmac('sha256', $url, $GLOBALS['salt']); // We use the salt to sign data (it's random, secret, and specific to each installation)
482d67bd 2172 return array('src'=>index_url($_SERVER).'?do=genthumbnail&hmac='.$sign.'&url='.urlencode($url),
bb8f712d 2173 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'thumbnail');
45034273
SS		 2174 }
2175 return array(); // No thumbnail.
2176
2177}
2178
2179
2180// Returns the HTML code to display a thumbnail for a link
2181// with a link to the original URL.
2182// Understands various services (youtube.com...)
ad6c27b7 2183// Input: $url = URL for which the thumbnail must be found.
45034273
SS		 2184// $href = if provided, this URL will be followed instead of $url
2185// Returns '' if no thumbnail available.
2186function thumbnail($url,$href=false)
2187{
2188 $t = computeThumbnail($url,$href);
2189 if (count($t)==0) return ''; // Empty array = no thumbnail for this URL.
bb8f712d 2190
5f85fcd8
A		 2191 $html='<a href="'.escape($t['href']).'"><img src="'.escape($t['src']).'"';
2192 if (!empty($t['width'])) $html.=' width="'.escape($t['width']).'"';
2193 if (!empty($t['height'])) $html.=' height="'.escape($t['height']).'"';
2194 if (!empty($t['style'])) $html.=' style="'.escape($t['style']).'"';
2195 if (!empty($t['alt'])) $html.=' alt="'.escape($t['alt']).'"';
45034273
SS		 2196 $html.='></a>';
2197 return $html;
2198}
2199
45034273
SS		 2200// Returns the HTML code to display a thumbnail for a link
2201// for the picture wall (using lazy image loading)
2202// Understands various services (youtube.com...)
ad6c27b7 2203// Input: $url = URL for which the thumbnail must be found.
45034273
SS		 2204// $href = if provided, this URL will be followed instead of $url
2205// Returns '' if no thumbnail available.
2206function lazyThumbnail($url,$href=false)
2207{
bb8f712d 2208 $t = computeThumbnail($url,$href);
45034273
SS		 2209 if (count($t)==0) return ''; // Empty array = no thumbnail for this URL.
2210
5f85fcd8 2211 $html='<a href="'.escape($t['href']).'">';
bb8f712d 2212
34047d23 2213 // Lazy image
5f85fcd8 2214 $html.='<img class="b-lazy" src="#" data-src="'.escape($t['src']).'"';
858c5c2b 2215
5f85fcd8
A		 2216 if (!empty($t['width'])) $html.=' width="'.escape($t['width']).'"';
2217 if (!empty($t['height'])) $html.=' height="'.escape($t['height']).'"';
2218 if (!empty($t['style'])) $html.=' style="'.escape($t['style']).'"';
2219 if (!empty($t['alt'])) $html.=' alt="'.escape($t['alt']).'"';
45034273 2220 $html.='>';
bb8f712d 2221
ad6c27b7 2222 // No-JavaScript fallback.
5f85fcd8
A		 2223 $html.='<noscript><img src="'.escape($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']).'"';
45034273 2228 $html.='></noscript></a>';
bb8f712d 2229
45034273
SS		 2230 return $html;
2231}
2232
2233
2234// -----------------------------------------------------------------------------------------------
2235// Installation
2236// This function should NEVER be called if the file data/config.php exists.
2237function install()
2238{
2239 // On free.fr host, make sure the /sessions directory exists, otherwise login will not work.
f6a6ca0a 2240 if (endsWith($_SERVER['HTTP_HOST'],'.free.fr') && !is_dir($_SERVER['DOCUMENT_ROOT'].'/sessions')) mkdir($_SERVER['DOCUMENT_ROOT'].'/sessions',0705);
45034273 2241
f37664a2
SS		 2242
2243 // This part makes sure sessions works correctly.
2244 // (Because on some hosts, session.save_path may not be set correctly,
2245 // or we may not have write access to it.)
2246 if (isset($_GET['test_session']) && ( !isset($_SESSION) || !isset($_SESSION['session_tested']) || $_SESSION['session_tested']!='Working'))
2247 { // Step 2: Check if data in session is correct.
2248 echo '<pre>Sessions do not seem to work correctly on your server.<br>';
2249 echo 'Make sure the variable session.save_path is set correctly in your php config, and that you have write access to it.<br>';
01ec1791 2250 echo 'It currently points to '.session_save_path().'<br>';
2251 echo 'Check that the hostname used to access Shaarli contains a dot. On some browsers, accessing your server via a hostname like \'localhost\' or any custom hostname without a dot causes cookie storage to fail. We recommend accessing your server via it\'s IP address or Fully Qualified Domain Name.<br>';
2252 echo '<br><a href="?">Click to try again.</a></pre>';
f37664a2
SS		 2253 die;
2254 }
2255 if (!isset($_SESSION['session_tested']))
2256 { // Step 1 : Try to store data in session and reload page.
2257 $_SESSION['session_tested'] = 'Working'; // Try to set a variable in session.
482d67bd 2258 header('Location: '.index_url($_SERVER).'?test_session'); // Redirect to check stored data.
f37664a2
SS		 2259 }
2260 if (isset($_GET['test_session']))
ad6c27b7 2261 { // Step 3: Sessions are OK. Remove test parameter from URL.
482d67bd 2262 header('Location: '.index_url($_SERVER));
f37664a2
SS		 2263 }
2264
2265
45034273
SS		 2266 if (!empty($_POST['setlogin']) && !empty($_POST['setpassword']))
2267 {
2268 $tz = 'UTC';
d1e2f8e5
V		 2269 if (!empty($_POST['continent']) && !empty($_POST['city'])) {
2270 if (isTimeZoneValid($_POST['continent'], $_POST['city'])) {
45034273 2271 $tz = $_POST['continent'].'/'.$_POST['city'];
d1e2f8e5
V		 2272 }
2273 }
45034273
SS		 2274 $GLOBALS['timezone'] = $tz;
2275 // Everything is ok, let's create config file.
2276 $GLOBALS['login'] = $_POST['setlogin'];
2277 $GLOBALS['salt'] = sha1(uniqid('',true).'_'.mt_rand()); // Salt renders rainbow-tables attacks useless.
2278 $GLOBALS['hash'] = sha1($_POST['setpassword'].$GLOBALS['login'].$GLOBALS['salt']);
482d67bd 2279 $GLOBALS['title'] = (empty($_POST['title']) ? 'Shared links on '.escape(index_url($_SERVER)) : $_POST['title'] );
329e0768 2280 $GLOBALS['config']['ENABLE_UPDATECHECK'] = !empty($_POST['updateCheck']);
dd484b90
A		 2281 try {
2282 writeConfig($GLOBALS, isLoggedIn());
2283 }
2284 catch(Exception $e) {
2285 error_log(
2286 'ERROR while writing config file after installation.' . PHP_EOL .
2287 $e->getMessage()
2288 );
2289
2290 // TODO: do not handle exceptions/errors in JS.
2291 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?\';</script>';
2292 exit;
2293 }
fe16b01e 2294 echo '<script>alert("Shaarli is now configured. Please enter your login/password and start shaaring your links!");document.location=\'?do=login\';</script>';
45034273
SS		 2295 exit;
2296 }
2297
2298 // Display config form:
d1e2f8e5
V		 2299 list($timezone_form, $timezone_js) = generateTimeZoneForm();
2300 $timezone_html = '';
2301 if ($timezone_form != '') {
2302 $timezone_html = '<tr><td><b>Timezone:</b></td><td>'.$timezone_form.'</td></tr>';
2303 }
bb8f712d 2304
45034273
SS		 2305 $PAGE = new pageBuilder;
2306 $PAGE->assign('timezone_html',$timezone_html);
2307 $PAGE->assign('timezone_js',$timezone_js);
2308 $PAGE->renderPage('install');
2309 exit;
2310}
2311
ad6c27b7 2312/* Because some f*cking services like flickr require an extra HTTP request to get the thumbnail URL,
45034273 2313 I have deported the thumbnail URL code generation here, otherwise this would slow down page generation.
ad6c27b7 2314 The following function takes the URL a link (e.g. a flickr page) and return the proper thumbnail.
2315 This function is called by passing the URL:
45034273 2316 http://mywebsite.com/shaarli/?do=genthumbnail&hmac=[HMAC]&url=[URL]
ad6c27b7 2317 [URL] is the URL of the link (e.g. a flickr page)
45034273
SS		 2318 [HMAC] is the signature for the [URL] (so that these URL cannot be forged).
2319 The function below will fetch the image from the webservice and store it in the cache.
2320*/
2321function genThumbnail()
2322{
2323 // Make sure the parameters in the URL were generated by us.
2324 $sign = hash_hmac('sha256', $_GET['url'], $GLOBALS['salt']);
ad6c27b7 2325 if ($sign!=$_GET['hmac']) die('Naughty boy!');
45034273
SS		 2326
2327 // Let's see if we don't already have the image for this URL in the cache.
2328 $thumbname=hash('sha1',$_GET['url']).'.jpg';
2329 if (is_file($GLOBALS['config']['CACHEDIR'].'/'.$thumbname))
2330 { // We have the thumbnail, just serve it:
2331 header('Content-Type: image/jpeg');
2332 echo file_get_contents($GLOBALS['config']['CACHEDIR'].'/'.$thumbname);
2333 return;
2334 }
2335 // We may also serve a blank image (if service did not respond)
2336 $blankname=hash('sha1',$_GET['url']).'.gif';
2337 if (is_file($GLOBALS['config']['CACHEDIR'].'/'.$blankname))
2338 {
2339 header('Content-Type: image/gif');
2340 echo file_get_contents($GLOBALS['config']['CACHEDIR'].'/'.$blankname);
2341 return;
2342 }
2343
2344 // Otherwise, generate the thumbnail.
2345 $url = $_GET['url'];
2346 $domain = parse_url($url,PHP_URL_HOST);
2347
2348 if ($domain=='flickr.com' || endsWith($domain,'.flickr.com'))
2349 {
ad6c27b7 2350 // Crude replacement to handle new flickr domain policy (They prefer www. now)
45034273
SS		 2351 $url = str_replace('http://flickr.com/','http://www.flickr.com/',$url);
2352
2353 // Is this a link to an image, or to a flickr page ?
2354 $imageurl='';
2355 if (endswith(parse_url($url,PHP_URL_PATH),'.jpg'))
ad6c27b7 2356 { // This is a direct link to an image. e.g. http://farm1.staticflickr.com/5/5921913_ac83ed27bd_o.jpg
45034273
SS		 2357 preg_match('!(http://farm\d+\.staticflickr\.com/\d+/\d+_\w+_)\w.jpg!',$url,$matches);
2358 if (!empty($matches[1])) $imageurl=$matches[1].'m.jpg';
2359 }
ad6c27b7 2360 else // This is a flickr page (html)
45034273 2361 {
451314eb 2362 // Get the flickr html page.
1557cefb 2363 list($headers, $content) = get_http_response($url, 20);
451314eb 2364 if (strpos($headers[0], '200 OK') !== false)
45034273 2365 {
ad6c27b7 2366 // flickr now nicely provides the URL of the thumbnail in each flickr page.
1557cefb 2367 preg_match('!<link rel=\"image_src\" href=\"(.+?)\"!', $content, $matches);
45034273
SS		 2368 if (!empty($matches[1])) $imageurl=$matches[1];
2369
2370 // In albums (and some other pages), the link rel="image_src" is not provided,
2371 // but flickr provides:
2372 // <meta property="og:image" content="http://farm4.staticflickr.com/3398/3239339068_25d13535ff_z.jpg" />
2373 if ($imageurl=='')
2374 {
1557cefb 2375 preg_match('!<meta property=\"og:image\" content=\"(.+?)\"!', $content, $matches);
45034273
SS		 2376 if (!empty($matches[1])) $imageurl=$matches[1];
2377 }
2378 }
2379 }
2380
2381 if ($imageurl!='')
2382 { // Let's download the image.
451314eb 2383 // Image is 240x120, so 10 seconds to download should be enough.
1557cefb 2384 list($headers, $content) = get_http_response($imageurl, 10);
451314eb 2385 if (strpos($headers[0], '200 OK') !== false) {
1557cefb
A		 2386 // Save image to cache.
2387 file_put_contents($GLOBALS['config']['CACHEDIR'].'/' . $thumbname, $content);
45034273 2388 header('Content-Type: image/jpeg');
1557cefb 2389 echo $content;
45034273
SS		 2390 return;
2391 }
2392 }
2393 }
2394
2395 elseif ($domain=='vimeo.com' )
2396 {
2397 // This is more complex: we have to perform a HTTP request, then parse the result.
ad6c27b7 2398 // Maybe we should deport this to JavaScript ? Example: http://stackoverflow.com/questions/1361149/get-img-thumbnails-from-vimeo/4285098#4285098
45034273 2399 $vid = substr(parse_url($url,PHP_URL_PATH),1);
1557cefb 2400 list($headers, $content) = get_http_response('https://vimeo.com/api/v2/video/'.escape($vid).'.php', 5);
451314eb 2401 if (strpos($headers[0], '200 OK') !== false) {
1557cefb 2402 $t = unserialize($content);
45034273
SS		 2403 $imageurl = $t[0]['thumbnail_medium'];
2404 // Then we download the image and serve it to our client.
1557cefb 2405 list($headers, $content) = get_http_response($imageurl, 10);
451314eb 2406 if (strpos($headers[0], '200 OK') !== false) {
1557cefb
A		 2407 // Save image to cache.
2408 file_put_contents($GLOBALS['config']['CACHEDIR'] . '/' . $thumbname, $content);
45034273 2409 header('Content-Type: image/jpeg');
1557cefb 2410 echo $content;
45034273
SS		 2411 return;
2412 }
2413 }
2414 }
2415
2416 elseif ($domain=='ted.com' || endsWith($domain,'.ted.com'))
2417 {
2418 // The thumbnail for TED talks is located in the <link rel="image_src" [...]> tag on that page
2419 // http://www.ted.com/talks/mikko_hypponen_fighting_viruses_defending_the_net.html
2420 // <link rel="image_src" href="http://images.ted.com/images/ted/28bced335898ba54d4441809c5b1112ffaf36781_389x292.jpg" />
1557cefb 2421 list($headers, $content) = get_http_response($url, 5);
451314eb 2422 if (strpos($headers[0], '200 OK') !== false) {
45034273 2423 // Extract the link to the thumbnail
1557cefb 2424 preg_match('!link rel="image_src" href="(http://images.ted.com/images/ted/.+_\d+x\d+\.jpg)"!', $content, $matches);
45034273
SS		 2425 if (!empty($matches[1]))
2426 { // Let's download the image.
2427 $imageurl=$matches[1];
451314eb 2428 // No control on image size, so wait long enough
1557cefb 2429 list($headers, $content) = get_http_response($imageurl, 20);
451314eb 2430 if (strpos($headers[0], '200 OK') !== false) {
45034273 2431 $filepath=$GLOBALS['config']['CACHEDIR'].'/'.$thumbname;
1557cefb 2432 file_put_contents($filepath, $content); // Save image to cache.
45034273
SS		 2433 if (resizeImage($filepath))
2434 {
2435 header('Content-Type: image/jpeg');
2436 echo file_get_contents($filepath);
2437 return;
2438 }
2439 }
2440 }
2441 }
2442 }
bb8f712d 2443
45034273
SS		 2444 elseif ($domain=='xkcd.com' || endsWith($domain,'.xkcd.com'))
2445 {
2446 // There is no thumbnail available for xkcd comics, so download the whole image and resize it.
2447 // http://xkcd.com/327/
2448 // <img src="http://imgs.xkcd.com/comics/exploits_of_a_mom.png" title="<BLABLA>" alt="<BLABLA>" />
1557cefb 2449 list($headers, $content) = get_http_response($url, 5);
451314eb 2450 if (strpos($headers[0], '200 OK') !== false) {
45034273 2451 // Extract the link to the thumbnail
1557cefb 2452 preg_match('!<img src="(http://imgs.xkcd.com/comics/.*)" title="[^s]!', $content, $matches);
45034273
SS		 2453 if (!empty($matches[1]))
2454 { // Let's download the image.
2455 $imageurl=$matches[1];
451314eb 2456 // No control on image size, so wait long enough
1557cefb 2457 list($headers, $content) = get_http_response($imageurl, 20);
451314eb 2458 if (strpos($headers[0], '200 OK') !== false) {
45034273 2459 $filepath=$GLOBALS['config']['CACHEDIR'].'/'.$thumbname;
1557cefb
A		 2460 // Save image to cache.
2461 file_put_contents($filepath, $content);
45034273
SS		 2462 if (resizeImage($filepath))
2463 {
2464 header('Content-Type: image/jpeg');
2465 echo file_get_contents($filepath);
2466 return;
2467 }
2468 }
2469 }
2470 }
bb8f712d 2471 }
45034273
SS		 2472
2473 else
2474 {
2475 // For all other domains, we try to download the image and make a thumbnail.
451314eb 2476 // We allow 30 seconds max to download (and downloads are limited to 4 Mb)
1557cefb 2477 list($headers, $content) = get_http_response($url, 30);
451314eb 2478 if (strpos($headers[0], '200 OK') !== false) {
45034273 2479 $filepath=$GLOBALS['config']['CACHEDIR'].'/'.$thumbname;
1557cefb
A		 2480 // Save image to cache.
2481 file_put_contents($filepath, $content);
45034273
SS		 2482 if (resizeImage($filepath))
2483 {
2484 header('Content-Type: image/jpeg');
2485 echo file_get_contents($filepath);
2486 return;
2487 }
2488 }
2489 }
2490
2491
2492 // Otherwise, return an empty image (8x8 transparent gif)
2493 $blankgif = base64_decode('R0lGODlhCAAIAIAAAP///////yH5BAEKAAEALAAAAAAIAAgAAAIHjI+py+1dAAA7');
2494 file_put_contents($GLOBALS['config']['CACHEDIR'].'/'.$blankname,$blankgif); // Also put something in cache so that this URL is not requested twice.
2495 header('Content-Type: image/gif');
2496 echo $blankgif;
2497}
2498
2499// Make a thumbnail of the image (to width: 120 pixels)
2500// Returns true if success, false otherwise.
2501function resizeImage($filepath)
2502{
2503 if (!function_exists('imagecreatefromjpeg')) return false; // GD not present: no thumbnail possible.
2504
2505 // Trick: some stupid people rename GIF as JPEG... or else.
2506 // So we really try to open each image type whatever the extension is.
2507 $header=file_get_contents($filepath,false,NULL,0,256); // Read first 256 bytes and try to sniff file type.
2508 $im=false;
2509 $i=strpos($header,'GIF8'); if (($i!==false) && ($i==0)) $im = imagecreatefromgif($filepath); // Well this is crude, but it should be enough.
2510 $i=strpos($header,'PNG'); if (($i!==false) && ($i==1)) $im = imagecreatefrompng($filepath);
2511 $i=strpos($header,'JFIF'); if ($i!==false) $im = imagecreatefromjpeg($filepath);
2512 if (!$im) return false; // Unable to open image (corrupted or not an image)
2513 $w = imagesx($im);
2514 $h = imagesy($im);
2515 $ystart = 0; $yheight=$h;
2516 if ($h>$w) { $ystart= ($h/2)-($w/2); $yheight=$w/2; }
2517 $nw = 120; // Desired width
2518 $nh = min(floor(($h*$nw)/$w),120); // Compute new width/height, but maximum 120 pixels height.
2519 // Resize image:
2520 $im2 = imagecreatetruecolor($nw,$nh);
2521 imagecopyresampled($im2, $im, 0, 0, 0, $ystart, $nw, $nh, $w, $yheight);
2522 imageinterlace($im2,true); // For progressive JPEG.
2523 $tempname=$filepath.'_TEMP.jpg';
2524 imagejpeg($im2, $tempname, 90);
2525 imagedestroy($im);
2526 imagedestroy($im2);
9e820906 2527 unlink($filepath);
45034273
SS		 2528 rename($tempname,$filepath); // Overwrite original picture with thumbnail.
2529 return true;
2530}
2531
dd484b90
A		 2532try {
2533 mergeDeprecatedConfig($GLOBALS, isLoggedIn());
2534} catch(Exception $e) {
2535 error_log(
2536 'ERROR while merging deprecated options.php file.' . PHP_EOL .
2537 $e->getMessage()
2538 );
2539}
2540
45034273
SS		 2541if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=genthumbnail')) { genThumbnail(); exit; } // Thumbnail generation/cache does not need the link database.
2542if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=rss')) { showRSS(); exit; }
2543if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=atom')) { showATOM(); exit; }
2544if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=dailyrss')) { showDailyRSS(); exit; }
45034273
SS		 2545if (!isset($_SESSION['LINKS_PER_PAGE'])) $_SESSION['LINKS_PER_PAGE']=$GLOBALS['config']['LINKS_PER_PAGE'];
2546renderPage();
03545ef6 2547?>
The personal, minimalist, super-fast, database free, bookmarking service - community repo