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Fixes #481: tag cloud fatal error
[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'] = $GLOBALS['config']['DATADIR'].'/ipbans.php';
46
510377d2
A		 47// Processed updates file.
48$GLOBALS['config']['UPDATES_FILE'] = $GLOBALS['config']['DATADIR'].'/updates.txt';
49
2e28269b
V		 50// Access log
51$GLOBALS['config']['LOG_FILE'] = $GLOBALS['config']['DATADIR'].'/log.txt';
52
28bb2b74
V		 53// For updates check of Shaarli
54$GLOBALS['config']['UPDATECHECK_FILENAME'] = $GLOBALS['config']['DATADIR'].'/lastupdatecheck.txt';
55
7c873f1c
A		 56// Set ENABLE_UPDATECHECK to disabled by default.
57$GLOBALS['config']['ENABLE_UPDATECHECK'] = false;
58
28bb2b74
V		 59// RainTPL cache directory (keep the trailing slash!)
60$GLOBALS['config']['RAINTPL_TMP'] = 'tmp/';
61// Raintpl template directory (keep the trailing slash!)
62$GLOBALS['config']['RAINTPL_TPL'] = 'tpl/';
63
2e28269b 64// Thumbnail cache directory
28bb2b74
V		 65$GLOBALS['config']['CACHEDIR'] = 'cache';
66
67// Atom & RSS feed cache directory
68$GLOBALS['config']['PAGECACHE'] = 'pagecache';
69
28bb2b74
V		 70/*
71 * Global configuration
72 */
73// Ban IP after this many failures
74$GLOBALS['config']['BAN_AFTER'] = 4;
75// Ban duration for IP address after login failures (in seconds)
76$GLOBALS['config']['BAN_DURATION'] = 1800;
77
78// Feed options
79// Enable RSS permalinks by default.
80// This corresponds to the default behavior of shaarli before this was added as an option.
81$GLOBALS['config']['ENABLE_RSS_PERMALINKS'] = true;
82// If true, an extra "ATOM feed" button will be displayed in the toolbar
83$GLOBALS['config']['SHOW_ATOM'] = false;
84
85// Link display options
caee7ff9 86$GLOBALS['config']['HIDE_PUBLIC_LINKS'] = false;
28bb2b74
V		 87$GLOBALS['config']['HIDE_TIMESTAMPS'] = false;
88$GLOBALS['config']['LINKS_PER_PAGE'] = 20;
89
90// Open Shaarli (true): anyone can add/edit/delete links without having to login
91$GLOBALS['config']['OPEN_SHAARLI'] = false;
92
93// Thumbnails
94// Display thumbnails in links
95$GLOBALS['config']['ENABLE_THUMBNAILS'] = true;
96// Store thumbnails in a local cache
97$GLOBALS['config']['ENABLE_LOCALCACHE'] = true;
98
99// Update check frequency for Shaarli. 86400 seconds=24 hours
4407b45f
V		 100$GLOBALS['config']['UPDATECHECK_BRANCH'] = 'stable';
101$GLOBALS['config']['UPDATECHECK_INTERVAL'] = 86400;
28bb2b74
V		 102
103
104/*
105 * Plugin configuration
106 *
107 * Warning: order matters!
108 *
109 * These settings may be be overriden in:
110 * - data/config.php
111 * - each plugin's configuration file
112 */
6fc14d53
A		 113//$GLOBALS['config']['ENABLED_PLUGINS'] = array(
114// 'qrcode', 'archiveorg', 'readityourself', 'demo_plugin', 'playvideos',
115// 'wallabag', 'markdown', 'addlink_toolbar',
116//);
6fc14d53
A		 117$GLOBALS['config']['ENABLED_PLUGINS'] = array('qrcode');
118
091e2d13
A		 119// Initialize plugin parameters array.
120$GLOBALS['plugins'] = array();
28bb2b74
V		 121
122// PubSubHubbub support. Put an empty string to disable, or put your hub url here to enable.
123$GLOBALS['config']['PUBSUBHUB_URL'] = '';
124
125/*
126 * PHP configuration
127 */
729d2671 128define('shaarli_version', '0.6.3');
28bb2b74 129
ae00595b
CH		 130// http://server.com/x/shaarli --> /shaarli/
131define('WEB_PATH', substr($_SERVER["REQUEST_URI"], 0, 1+strrpos($_SERVER["REQUEST_URI"], '/', 0)));
45034273 132
28bb2b74
V		 133// High execution time in case of problematic imports/exports.
134ini_set('max_input_time','60');
135
136// Try to set max upload file size and read
137ini_set('memory_limit', '128M');
45034273
SS		 138ini_set('post_max_size', '16M');
139ini_set('upload_max_filesize', '16M');
45034273 140
28bb2b74
V		 141// See all error except warnings
142error_reporting(E_ALL^E_WARNING);
143// See all errors (for debugging only)
144//error_reporting(-1);
145
146/*
147 * User configuration
148 */
50c9a12e
V		 149if (is_file($GLOBALS['config']['CONFIG_FILE'])) {
150 require_once $GLOBALS['config']['CONFIG_FILE'];
151}
152
ca74886f 153// Shaarli library
2e28269b 154require_once 'application/ApplicationUtils.php';
01e48f26
V		 155require_once 'application/Cache.php';
156require_once 'application/CachedPage.php';
2e28269b 157require_once 'application/FileUtils.php';
451314eb 158require_once 'application/HttpUtils.php';
ca74886f 159require_once 'application/LinkDB.php';
822bffce 160require_once 'application/LinkFilter.php';
1557cefb 161require_once 'application/LinkUtils.php';
d1e2f8e5 162require_once 'application/TimeZone.php';
d9d776af 163require_once 'application/Url.php';
ca74886f 164require_once 'application/Utils.php';
dd484b90 165require_once 'application/Config.php';
6fc14d53
A		 166require_once 'application/PluginManager.php';
167require_once 'application/Router.php';
510377d2 168require_once 'application/Updater.php';
ca74886f 169
d1e2f8e5
V		 170// Ensure the PHP version is supported
171try {
c9cf2715 172 ApplicationUtils::checkPHPVersion('5.3', PHP_VERSION);
2e28269b 173} catch(Exception $exc) {
d1e2f8e5 174 header('Content-Type: text/plain; charset=utf-8');
2e28269b 175 echo $exc->getMessage();
d1e2f8e5
V		 176 exit;
177}
178
06b6660a
A		 179// Force cookie path (but do not change lifetime)
180$cookie = session_get_cookie_params();
181$cookiedir = '';
182if (dirname($_SERVER['SCRIPT_NAME']) != '/') {
183 $cookiedir = dirname($_SERVER["SCRIPT_NAME"]).'/';
184}
185// Set default cookie expiration and path.
186session_set_cookie_params($cookie['lifetime'], $cookiedir, $_SERVER['SERVER_NAME']);
187// Set session parameters on server side.
188// If the user does not access any page within this time, his/her session is considered expired.
189define('INACTIVITY_TIMEOUT', 3600); // in seconds.
190// Use cookies to store session.
191ini_set('session.use_cookies', 1);
192// Force cookies for session (phpsessionID forbidden in URL).
193ini_set('session.use_only_cookies', 1);
194// Prevent PHP form using sessionID in URL if cookies are disabled.
195ini_set('session.use_trans_sid', false);
196
06b6660a
A		 197session_name('shaarli');
198// Start session if needed (Some server auto-start sessions).
199if (session_id() == '') {
200 session_start();
201}
202
68bc2135
V		 203// Regenerate session ID if invalid or not defined in cookie.
204if (isset($_COOKIE['shaarli']) && !is_session_id_valid($_COOKIE['shaarli'])) {
205 session_regenerate_id(true);
206 $_COOKIE['shaarli'] = session_id();
207}
208
45034273 209include "inc/rain.tpl.class.php"; //include Rain TPL
25f5c59d 210raintpl::$tpl_dir = $GLOBALS['config']['RAINTPL_TPL']; // template directory
25f5c59d 211raintpl::$cache_dir = $GLOBALS['config']['RAINTPL_TMP']; // cache directory
45034273 212
6fc14d53
A		 213$pluginManager = PluginManager::getInstance();
214$pluginManager->load($GLOBALS['config']['ENABLED_PLUGINS']);
215
45034273
SS		 216ob_start(); // Output buffering for the page cache.
217
218
219// In case stupid admin has left magic_quotes enabled in php.ini:
220if (get_magic_quotes_gpc())
221{
222 function stripslashes_deep($value) { $value = is_array($value) ? array_map('stripslashes_deep', $value) : stripslashes($value); return $value; }
223 $_POST = array_map('stripslashes_deep', $_POST);
224 $_GET = array_map('stripslashes_deep', $_GET);
225 $_COOKIE = array_map('stripslashes_deep', $_COOKIE);
226}
227
228// Prevent caching on client side or proxy: (yes, it's ugly)
229header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
230header("Cache-Control: no-store, no-cache, must-revalidate");
231header("Cache-Control: post-check=0, pre-check=0", false);
232header("Pragma: no-cache");
233
45034273 234// Handling of old config file which do not have the new parameters.
482d67bd 235if (empty($GLOBALS['title'])) $GLOBALS['title']='Shared links on '.escape(index_url($_SERVER));
45034273 236if (empty($GLOBALS['timezone'])) $GLOBALS['timezone']=date_default_timezone_get();
8a80e4fe 237if (empty($GLOBALS['redirector'])) $GLOBALS['redirector']='';
45034273 238if (empty($GLOBALS['disablesessionprotection'])) $GLOBALS['disablesessionprotection']=false;
bb8f712d 239if (empty($GLOBALS['privateLinkByDefault'])) $GLOBALS['privateLinkByDefault']=false;
ebb2880d 240if (empty($GLOBALS['titleLink'])) $GLOBALS['titleLink']='?';
858c5c2b 241// I really need to rewrite Shaarli with a proper configuation manager.
45034273 242
50c9a12e 243if (! is_file($GLOBALS['config']['CONFIG_FILE'])) {
2e28269b
V		 244 // Ensure Shaarli has proper access to its resources
245 $errors = ApplicationUtils::checkResourcePermissions($GLOBALS['config']);
246
247 if ($errors != array()) {
248 $message = '<p>Insufficient permissions:</p><ul>';
249
250 foreach ($errors as $error) {
251 $message .= '<li>'.$error.'</li>';
252 }
253 $message .= '</ul>';
254
255 header('Content-Type: text/html; charset=utf-8');
256 echo $message;
257 exit;
258 }
259
260 // Display the installation form if no existing config is found
50c9a12e
V		 261 install();
262}
8a80e4fe 263
5f85fcd8
A		 264$GLOBALS['title'] = !empty($GLOBALS['title']) ? escape($GLOBALS['title']) : '';
265$GLOBALS['titleLink'] = !empty($GLOBALS['titleLink']) ? escape($GLOBALS['titleLink']) : '';
266$GLOBALS['redirector'] = !empty($GLOBALS['redirector']) ? escape($GLOBALS['redirector']) : '';
8a80e4fe 267
ae00595b
CH		 268// a token depending of deployment salt, user password, and the current ip
269define('STAY_SIGNED_IN_TOKEN', sha1($GLOBALS['hash'].$_SERVER["REMOTE_ADDR"].$GLOBALS['salt']));
8a80e4fe 270
7b63e4ca 271autoLocale($_SERVER['HTTP_ACCEPT_LANGUAGE']); // Sniff browser language and set date format accordingly.
45034273
SS		 272header('Content-Type: text/html; charset=utf-8'); // We use UTF-8 for proper international characters handling.
273
ff69d87e
FE		 274//==================================================================================================
275// Checking session state (i.e. is the user still logged in)
276//==================================================================================================
277
278function setup_login_state() {
ff69d87e 279 if ($GLOBALS['config']['OPEN_SHAARLI']) {
02ad8fb6 280 return true;
ff69d87e 281 }
02ad8fb6
JP		 282 $userIsLoggedIn = false; // By default, we do not consider the user as logged in;
283 $loginFailure = false; // If set to true, every attempt to authenticate the user will fail. This indicates that an important condition isn't met.
ff69d87e
FE		 284 if (!isset($GLOBALS['login'])) {
285 $userIsLoggedIn = false; // Shaarli is not configured yet.
286 $loginFailure = true;
287 }
288 if (isset($_COOKIE['shaarli_staySignedIn']) &&
289 $_COOKIE['shaarli_staySignedIn']===STAY_SIGNED_IN_TOKEN &&
290 !$loginFailure)
291 {
292 fillSessionInfo();
293 $userIsLoggedIn = true;
294 }
295 // If session does not exist on server side, or IP address has changed, or session has expired, logout.
296 if (empty($_SESSION['uid']) ||
297 ($GLOBALS['disablesessionprotection']==false && $_SESSION['ip']!=allIPs()) ||
298 time() >= $_SESSION['expires_on'])
299 {
300 logout();
301 $userIsLoggedIn = false;
302 $loginFailure = true;
303 }
304 if (!empty($_SESSION['longlastingsession'])) {
305 $_SESSION['expires_on']=time()+$_SESSION['longlastingsession']; // In case of "Stay signed in" checked.
306 }
307 else {
308 $_SESSION['expires_on']=time()+INACTIVITY_TIMEOUT; // Standard session expiration date.
309 }
310 if (!$loginFailure) {
311 $userIsLoggedIn = true;
312 }
313
314 return $userIsLoggedIn;
315}
ff69d87e 316$userIsLoggedIn = setup_login_state();
45034273 317
45034273
SS		 318// ------------------------------------------------------------------------------------------
319// PubSubHubbub protocol support (if enabled) [UNTESTED]
320// (Source: http://aldarone.fr/les-flux-rss-shaarli-et-pubsubhubbub/ )
321if (!empty($GLOBALS['config']['PUBSUBHUB_URL'])) include './publisher.php';
322function pubsubhub()
323{
324 if (!empty($GLOBALS['config']['PUBSUBHUB_URL']))
325 {
326 $p = new Publisher($GLOBALS['config']['PUBSUBHUB_URL']);
327 $topic_url = array (
482d67bd
V		 328 index_url($_SERVER).'?do=atom',
329 index_url($_SERVER).'?do=rss'
45034273
SS		 330 );
331 $p->publish_update($topic_url);
332 }
333}
334
335// ------------------------------------------------------------------------------------------
336// Session management
45034273
SS		 337
338// Returns the IP address of the client (Used to prevent session cookie hijacking.)
339function allIPs()
340{
341 $ip = $_SERVER["REMOTE_ADDR"];
342 // Then we use more HTTP headers to prevent session hijacking from users behind the same proxy.
343 if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) { $ip=$ip.'_'.$_SERVER['HTTP_X_FORWARDED_FOR']; }
344 if (isset($_SERVER['HTTP_CLIENT_IP'])) { $ip=$ip.'_'.$_SERVER['HTTP_CLIENT_IP']; }
345 return $ip;
346}
347
ae00595b 348function fillSessionInfo() {
ad6c27b7 349 $_SESSION['uid'] = sha1(uniqid('',true).'_'.mt_rand()); // Generate unique random number (different than phpsessionid)
ae00595b
CH		 350 $_SESSION['ip']=allIPs(); // We store IP address(es) of the client to make sure session is not hijacked.
351 $_SESSION['username']=$GLOBALS['login'];
352 $_SESSION['expires_on']=time()+INACTIVITY_TIMEOUT; // Set session expiration.
353}
354
45034273
SS		 355// Check that user/password is correct.
356function check_auth($login,$password)
357{
358 $hash = sha1($password.$login.$GLOBALS['salt']);
359 if ($login==$GLOBALS['login'] && $hash==$GLOBALS['hash'])
360 { // Login/password is correct.
ae00595b 361 fillSessionInfo();
1abe6555 362 logm($GLOBALS['config']['LOG_FILE'], $_SERVER['REMOTE_ADDR'], 'Login successful');
45034273
SS		 363 return True;
364 }
1abe6555 365 logm($GLOBALS['config']['LOG_FILE'], $_SERVER['REMOTE_ADDR'], 'Login failed for user '.$login);
45034273
SS		 366 return False;
367}
368
369// Returns true if the user is logged in.
370function isLoggedIn()
371{
ff69d87e
FE		 372 global $userIsLoggedIn;
373 return $userIsLoggedIn;
45034273
SS		 374}
375
376// Force logout.
ff69d87e
FE		 377function logout() {
378 if (isset($_SESSION)) {
379 unset($_SESSION['uid']);
380 unset($_SESSION['ip']);
381 unset($_SESSION['username']);
382 unset($_SESSION['privateonly']);
383 }
384 setcookie('shaarli_staySignedIn', FALSE, 0, WEB_PATH);
ae00595b 385}
45034273
SS		 386
387
388// ------------------------------------------------------------------------------------------
389// Brute force protection system
390// Several consecutive failed logins will ban the IP address for 30 minutes.
391if (!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?>");
392include $GLOBALS['config']['IPBANS_FILENAME'];
393// Signal a failed login. Will ban the IP if too many failures:
394function ban_loginFailed()
395{
396 $ip=$_SERVER["REMOTE_ADDR"]; $gb=$GLOBALS['IPBANS'];
397 if (!isset($gb['FAILURES'][$ip])) $gb['FAILURES'][$ip]=0;
398 $gb['FAILURES'][$ip]++;
399 if ($gb['FAILURES'][$ip]>($GLOBALS['config']['BAN_AFTER']-1))
400 {
401 $gb['BANS'][$ip]=time()+$GLOBALS['config']['BAN_DURATION'];
1abe6555 402 logm($GLOBALS['config']['LOG_FILE'], $_SERVER['REMOTE_ADDR'], 'IP address banned from login');
45034273
SS		 403 }
404 $GLOBALS['IPBANS'] = $gb;
405 file_put_contents($GLOBALS['config']['IPBANS_FILENAME'], "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>");
406}
407
408// Signals a successful login. Resets failed login counter.
409function ban_loginOk()
410{
411 $ip=$_SERVER["REMOTE_ADDR"]; $gb=$GLOBALS['IPBANS'];
412 unset($gb['FAILURES'][$ip]); unset($gb['BANS'][$ip]);
413 $GLOBALS['IPBANS'] = $gb;
414 file_put_contents($GLOBALS['config']['IPBANS_FILENAME'], "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>");
415}
416
417// Checks if the user CAN login. If 'true', the user can try to login.
418function ban_canLogin()
419{
420 $ip=$_SERVER["REMOTE_ADDR"]; $gb=$GLOBALS['IPBANS'];
421 if (isset($gb['BANS'][$ip]))
422 {
423 // User is banned. Check if the ban has expired:
424 if ($gb['BANS'][$ip]<=time())
425 { // Ban expired, user can try to login again.
1abe6555 426 logm($GLOBALS['config']['LOG_FILE'], $_SERVER['REMOTE_ADDR'], 'Ban lifted.');
45034273
SS		 427 unset($gb['FAILURES'][$ip]); unset($gb['BANS'][$ip]);
428 file_put_contents($GLOBALS['config']['IPBANS_FILENAME'], "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>");
429 return true; // Ban has expired, user can login.
430 }
431 return false; // User is banned.
432 }
433 return true; // User is not banned.
434}
435
436// ------------------------------------------------------------------------------------------
437// Process login form: Check if login/password is correct.
438if (isset($_POST['login']))
439{
440 if (!ban_canLogin()) die('I said: NO. You are banned for the moment. Go away.');
441 if (isset($_POST['password']) && tokenOk($_POST['token']) && (check_auth($_POST['login'], $_POST['password'])))
ad6c27b7 442 { // Login/password is OK.
45034273
SS		 443 ban_loginOk();
444 // If user wants to keep the session cookie even after the browser closes:
445 if (!empty($_POST['longlastingsession']))
446 {
ae00595b 447 setcookie('shaarli_staySignedIn', STAY_SIGNED_IN_TOKEN, time()+31536000, WEB_PATH);
45034273
SS		 448 $_SESSION['longlastingsession']=31536000; // (31536000 seconds = 1 year)
449 $_SESSION['expires_on']=time()+$_SESSION['longlastingsession']; // Set session expiration on server-side.
2d9fab88
SS		 450
451 $cookiedir = ''; if(dirname($_SERVER['SCRIPT_NAME'])!='/') $cookiedir=dirname($_SERVER["SCRIPT_NAME"]).'/';
2f32d074 452 session_set_cookie_params($_SESSION['longlastingsession'],$cookiedir,$_SERVER['SERVER_NAME']); // Set session cookie expiration on client side
ad6c27b7 453 // Note: Never forget the trailing slash on the cookie path!
45034273
SS		 454 session_regenerate_id(true); // Send cookie with new expiration date to browser.
455 }
456 else // Standard session expiration (=when browser closes)
457 {
2d9fab88 458 $cookiedir = ''; if(dirname($_SERVER['SCRIPT_NAME'])!='/') $cookiedir=dirname($_SERVER["SCRIPT_NAME"]).'/';
2f32d074 459 session_set_cookie_params(0,$cookiedir,$_SERVER['SERVER_NAME']); // 0 means "When browser closes"
45034273
SS		 460 session_regenerate_id(true);
461 }
f4c84ad7 462
45034273 463 // Optional redirect after login:
5fbabbb9
A		 464 if (isset($_GET['post'])) {
465 $uri = '?post='. urlencode($_GET['post']);
466 foreach (array('description', 'source', 'title') as $param) {
467 if (!empty($_GET[$param])) {
468 $uri .= '&'.$param.'='.urlencode($_GET[$param]);
469 }
470 }
471 header('Location: '. $uri);
472 exit;
473 }
474
475 if (isset($_GET['edit_link'])) {
476 header('Location: ?edit_link='. escape($_GET['edit_link']));
477 exit;
478 }
479
480 if (isset($_POST['returnurl'])) {
481 // Prevent loops over login screen.
482 if (strpos($_POST['returnurl'], 'do=login') === false) {
483 header('Location: '. escape($_POST['returnurl']));
484 exit;
485 }
45034273
SS		 486 }
487 header('Location: ?'); exit;
488 }
489 else
490 {
491 ban_loginFailed();
705f8355 492 $redir = '';
5fbabbb9
A		 493 if (isset($_GET['post'])) {
494 $redir = '?post=' . urlencode($_GET['post']);
495 foreach (array('description', 'source', 'title') as $param) {
496 if (!empty($_GET[$param])) {
497 $redir .= '&' . $param . '=' . urlencode($_GET[$param]);
498 }
499 }
500 }
fe16b01e 501 echo '<script>alert("Wrong login/password.");document.location=\'?do=login'.$redir.'\';</script>'; // Redirect to login screen.
45034273
SS		 502 exit;
503 }
504}
505
506// ------------------------------------------------------------------------------------------
507// Misc utility functions:
508
ad6c27b7 509// Convert post_max_size/upload_max_filesize (e.g. '16M') parameters to bytes.
45034273
SS		 510function return_bytes($val)
511{
512 $val = trim($val); $last=strtolower($val[strlen($val)-1]);
513 switch($last)
514 {
515 case 'g': $val *= 1024;
516 case 'm': $val *= 1024;
517 case 'k': $val *= 1024;
518 }
519 return $val;
520}
521
522// Try to determine max file size for uploads (POST).
523// Returns an integer (in bytes)
524function getMaxFileSize()
525{
526 $size1 = return_bytes(ini_get('post_max_size'));
527 $size2 = return_bytes(ini_get('upload_max_filesize'));
528 // Return the smaller of two:
529 $maxsize = min($size1,$size2);
ad6c27b7 530 // FIXME: Then convert back to readable notations ? (e.g. 2M instead of 2000000)
45034273
SS		 531 return $maxsize;
532}
533
45034273
SS		 534/* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a timestamp (Unix epoch)
535 (used to build the ADD_DATE attribute in Netscape-bookmarks file)
536 PS: I could have used strptime(), but it does not exist on Windows. I'm too kind. */
537function linkdate2timestamp($linkdate)
538{
f5b05925
JD		 539 if(strcmp($linkdate, '_000000') !== 0 || !$linkdate){
540 $Y=$M=$D=$h=$m=$s=0;
541 $r = sscanf($linkdate,'%4d%2d%2d_%2d%2d%2d',$Y,$M,$D,$h,$m,$s);
542 return mktime($h,$m,$s,$M,$D,$Y);
543 }
544 return time();
45034273
SS		 545}
546
547/* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a RFC822 date.
548 (used to build the pubDate attribute in RSS feed.) */
549function linkdate2rfc822($linkdate)
550{
551 return date('r',linkdate2timestamp($linkdate)); // 'r' is for RFC822 date format.
552}
553
554/* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a ISO 8601 date.
555 (used to build the updated tags in ATOM feed.) */
556function linkdate2iso8601($linkdate)
557{
558 return date('c',linkdate2timestamp($linkdate)); // 'c' is for ISO 8601 date format.
559}
560
45034273
SS		 561// ------------------------------------------------------------------------------------------
562// Token management for XSRF protection
563// Token should be used in any form which acts on data (create,update,delete,import...).
564if (!isset($_SESSION['tokens'])) $_SESSION['tokens']=array(); // Token are attached to the session.
565
566// Returns a token.
567function getToken()
568{
a1f5a6ec 569 $rnd = sha1(uniqid('',true).'_'.mt_rand().$GLOBALS['salt']); // We generate a random string.
45034273
SS		 570 $_SESSION['tokens'][$rnd]=1; // Store it on the server side.
571 return $rnd;
572}
573
ad6c27b7 574// Tells if a token is OK. Using this function will destroy the token.
575// true=token is OK.
45034273
SS		 576function tokenOk($token)
577{
578 if (isset($_SESSION['tokens'][$token]))
579 {
580 unset($_SESSION['tokens'][$token]); // Token is used: destroy it.
ad6c27b7 581 return true; // Token is OK.
45034273
SS		 582 }
583 return false; // Wrong token, or already used.
584}
585
586// ------------------------------------------------------------------------------------------
587/* This class is in charge of building the final page.
588 (This is basically a wrapper around RainTPL which pre-fills some fields.)
589 p = new pageBuilder;
590 p.assign('myfield','myvalue');
591 p.renderPage('mytemplate');
bb8f712d 592
45034273
SS		 593*/
594class pageBuilder
595{
596 private $tpl; // RainTPL template
597
598 function __construct()
599 {
056107ab 600 $this->tpl = false;
bb8f712d 601 }
45034273 602
056107ab
A		 603 /**
604 * Initialize all default tpl tags.
605 */
45034273 606 private function initialize()
bb8f712d
KT		 607 {
608 $this->tpl = new RainTPL;
4407b45f
V		 609
610 try {
611 $version = ApplicationUtils::checkUpdate(
612 shaarli_version,
613 $GLOBALS['config']['UPDATECHECK_FILENAME'],
614 $GLOBALS['config']['UPDATECHECK_INTERVAL'],
615 $GLOBALS['config']['ENABLE_UPDATECHECK'],
616 isLoggedIn(),
617 $GLOBALS['config']['UPDATECHECK_BRANCH']
618 );
619 $this->tpl->assign('newVersion', escape($version));
4a7af975 620 $this->tpl->assign('versionError', '');
4407b45f
V		 621
622 } catch (Exception $exc) {
1abe6555 623 logm($GLOBALS['config']['LOG_FILE'], $_SERVER['REMOTE_ADDR'], $exc->getMessage());
4a7af975 624 $this->tpl->assign('newVersion', '');
4407b45f
V		 625 $this->tpl->assign('versionError', escape($exc->getMessage()));
626 }
627
056107ab
A		 628 $this->tpl->assign('feedurl', escape(index_url($_SERVER)));
629 $searchcrits = ''; // Search criteria
630 if (!empty($_GET['searchtags'])) {
631 $searchcrits .= '&searchtags=' . urlencode($_GET['searchtags']);
632 }
633 elseif (!empty($_GET['searchterm'])) {
634 $searchcrits .= '&searchterm=' . urlencode($_GET['searchterm']);
635 }
636 $this->tpl->assign('searchcrits', $searchcrits);
637 $this->tpl->assign('source', index_url($_SERVER));
638 $this->tpl->assign('version', shaarli_version);
639 $this->tpl->assign('scripturl', index_url($_SERVER));
640 $this->tpl->assign('pagetitle', 'Shaarli');
641 $this->tpl->assign('privateonly', !empty($_SESSION['privateonly'])); // Show only private links?
642 if (!empty($GLOBALS['title'])) {
643 $this->tpl->assign('pagetitle', $GLOBALS['title']);
644 }
645 if (!empty($GLOBALS['titleLink'])) {
646 $this->tpl->assign('titleLink', $GLOBALS['titleLink']);
647 }
648 if (!empty($GLOBALS['pagetitle'])) {
649 $this->tpl->assign('pagetitle', $GLOBALS['pagetitle']);
650 }
651 $this->tpl->assign('shaarlititle', empty($GLOBALS['title']) ? 'Shaarli': $GLOBALS['title']);
e4b9a763
A		 652 if (!empty($GLOBALS['plugin_errors'])) {
653 $this->tpl->assign('plugin_errors', $GLOBALS['plugin_errors']);
056107ab 654 }
45034273 655 }
bb8f712d 656
45034273
SS		 657 // The following assign() method is basically the same as RainTPL (except that it's lazy)
658 public function assign($what,$where)
659 {
660 if ($this->tpl===false) $this->initialize(); // Lazy initialization
661 $this->tpl->assign($what,$where);
662 }
bb8f712d 663
45034273 664 // Render a specific page (using a template).
ad6c27b7 665 // e.g. pb.renderPage('picwall')
45034273
SS		 666 public function renderPage($page)
667 {
668 if ($this->tpl===false) $this->initialize(); // Lazy initialization
669 $this->tpl->draw($page);
670 }
f4c84ad7
D		 671
672 /**
673 * Render a 404 page (uses the template : tpl/404.tpl)
674 *
675 * usage : $PAGE->render404('The link was deleted')
676 * @param string $message A messate to display what is not found
677 */
678 public function render404($message='The page you are trying to reach does not exist or has been deleted.') {
679 header($_SERVER['SERVER_PROTOCOL'] . ' 404 Not Found');
680 $this->tpl->assign('error_message', $message);
681 $this->renderPage('404');
682 }
45034273
SS		 683}
684
45034273 685// ------------------------------------------------------------------------------------------
ad6c27b7 686// Output the last N links in RSS 2.0 format.
45034273
SS		 687function showRSS()
688{
689 header('Content-Type: application/rss+xml; charset=utf-8');
690
2abd3905 691 // $usepermalink : If true, use permalink instead of final link.
ad6c27b7 692 // User just has to add 'permalink' in URL parameters. e.g. http://mysite.com/shaarli/?do=rss&permalinks
ed5b38dd
FE		 693 // Also enabled through a config option
694 $usepermalinks = isset($_GET['permalinks']) || !$GLOBALS['config']['ENABLE_RSS_PERMALINKS'];
2abd3905 695
45034273
SS		 696 // Cache system
697 $query = $_SERVER["QUERY_STRING"];
01e48f26
V		 698 $cache = new CachedPage(
699 $GLOBALS['config']['PAGECACHE'],
482d67bd 700 page_url($_SERVER),
01e48f26
V		 701 startsWith($query,'do=rss') && !isLoggedIn()
702 );
703 $cached = $cache->cachedVersion();
704 if (! empty($cached)) {
705 echo $cached;
706 exit;
707 }
45034273
SS		 708
709 // If cached was not found (or not usable), then read the database and build the response:
9f15ca9e 710 $LINKSDB = new LinkDB(
9c8752a2 711 $GLOBALS['config']['DATASTORE'],
02ad8fb6 712 isLoggedIn(),
90e5bd65
A		 713 $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
714 $GLOBALS['redirector']
9f15ca9e
V		 715 );
716 // Read links from database (and filter private links if user it not logged in).
45034273 717
ad6c27b7 718 // Optionally filter the results:
822bffce
A		 719 if (!empty($_GET['searchterm'])) {
720 $linksToDisplay = $LINKSDB->filter(LinkFilter::$FILTER_TEXT, $_GET['searchterm']);
721 }
722 elseif (!empty($_GET['searchtags'])) {
723 $linksToDisplay = $LINKSDB->filter(LinkFilter::$FILTER_TAG, trim($_GET['searchtags']));
724 }
725 else {
726 $linksToDisplay = $LINKSDB;
727 }
f3db3774 728
c677013b 729 $nblinksToDisplay = 50; // Number of links to display.
822bffce
A		 730 // In URL, you can specificy the number of links. Example: nb=200 or nb=all for all links.
731 if (!empty($_GET['nb'])) {
732 $nblinksToDisplay = $_GET['nb'] == 'all' ? count($linksToDisplay) : max(intval($_GET['nb']), 1);
c677013b 733 }
45034273 734
822bffce 735 $pageaddr = escape(index_url($_SERVER));
45034273 736 echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">';
5f85fcd8 737 echo '<channel><title>'.$GLOBALS['title'].'</title><link>'.$pageaddr.'</link>';
45034273
SS		 738 echo '<description>Shared links</description><language>en-en</language><copyright>'.$pageaddr.'</copyright>'."\n\n";
739 if (!empty($GLOBALS['config']['PUBSUBHUB_URL']))
740 {
741 echo '<!-- PubSubHubbub Discovery -->';
5f85fcd8
A		 742 echo '<link rel="hub" href="'.escape($GLOBALS['config']['PUBSUBHUB_URL']).'" xmlns="http://www.w3.org/2005/Atom" />';
743 echo '<link rel="self" href="'.$pageaddr.'?do=rss" xmlns="http://www.w3.org/2005/Atom" />';
45034273
SS		 744 echo '<!-- End Of PubSubHubbub Discovery -->';
745 }
746 $i=0;
747 $keys=array(); foreach($linksToDisplay as $key=>$value) { $keys[]=$key; } // No, I can't use array_keys().
fbd9e527 748 while ($i<$nblinksToDisplay && $i<count($keys))
45034273
SS		 749 {
750 $link = $linksToDisplay[$keys[$i]];
751 $guid = $pageaddr.'?'.smallHash($link['linkdate']);
752 $rfc822date = linkdate2rfc822($link['linkdate']);
5f85fcd8 753 $absurl = $link['url'];
45034273 754 if (startsWith($absurl,'?')) $absurl=$pageaddr.$absurl; // make permalink URL absolute
2abd3905 755 if ($usepermalinks===true)
5f85fcd8 756 echo '<item><title>'.$link['title'].'</title><guid isPermaLink="true">'.$guid.'</guid><link>'.$guid.'</link>';
2abd3905 757 else
5f85fcd8
A		 758 echo '<item><title>'.$link['title'].'</title><guid isPermaLink="false">'.$guid.'</guid><link>'.$absurl.'</link>';
759 if (!$GLOBALS['config']['HIDE_TIMESTAMPS'] || isLoggedIn()) echo '<pubDate>'.escape($rfc822date)."</pubDate>\n";
45034273
SS		 760 if ($link['tags']!='') // Adding tags to each RSS entry (as mentioned in RSS specification)
761 {
5f85fcd8 762 foreach(explode(' ',$link['tags']) as $tag) { echo '<category domain="'.$pageaddr.'">'.$tag.'</category>'."\n"; }
45034273 763 }
2abd3905
SS		 764
765 // Add permalink in description
766 $descriptionlink = '(<a href="'.$guid.'">Permalink</a>)';
767 // If user wants permalinks first, put the final link in description
768 if ($usepermalinks===true) $descriptionlink = '(<a href="'.$absurl.'">Link</a>)';
769 if (strlen($link['description'])>0) $descriptionlink = '<br>'.$descriptionlink;
90e5bd65
A		 770 echo '<description><![CDATA['.
771 format_description($link['description'], $GLOBALS['redirector']) .
772 $descriptionlink . ']]></description>' . "\n</item>\n";
45034273
SS		 773 $i++;
774 }
482d67bd 775 echo '</channel></rss><!-- Cached version of '.escape(page_url($_SERVER)).' -->';
45034273
SS		 776
777 $cache->cache(ob_get_contents());
778 ob_end_flush();
779 exit;
780}
781
782// ------------------------------------------------------------------------------------------
ad6c27b7 783// Output the last N links in ATOM format.
45034273
SS		 784function showATOM()
785{
786 header('Content-Type: application/atom+xml; charset=utf-8');
787
2abd3905 788 // $usepermalink : If true, use permalink instead of final link.
ad6c27b7 789 // User just has to add 'permalink' in URL parameters. e.g. http://mysite.com/shaarli/?do=atom&permalinks
ed5b38dd 790 $usepermalinks = isset($_GET['permalinks']) || !$GLOBALS['config']['ENABLE_RSS_PERMALINKS'];
2abd3905 791
45034273
SS		 792 // Cache system
793 $query = $_SERVER["QUERY_STRING"];
01e48f26
V		 794 $cache = new CachedPage(
795 $GLOBALS['config']['PAGECACHE'],
482d67bd 796 page_url($_SERVER),
01e48f26
V		 797 startsWith($query,'do=atom') && !isLoggedIn()
798 );
799 $cached = $cache->cachedVersion();
800 if (!empty($cached)) {
801 echo $cached;
802 exit;
803 }
45034273 804
01e48f26
V		 805 // If cached was not found (or not usable), then read the database and build the response:
806 // Read links from database (and filter private links if used it not logged in).
9f15ca9e 807 $LINKSDB = new LinkDB(
9c8752a2 808 $GLOBALS['config']['DATASTORE'],
02ad8fb6 809 isLoggedIn(),
90e5bd65
A		 810 $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
811 $GLOBALS['redirector']
9f15ca9e 812 );
45034273 813
ad6c27b7 814 // Optionally filter the results:
822bffce
A		 815 if (!empty($_GET['searchterm'])) {
816 $linksToDisplay = $LINKSDB->filter(LinkFilter::$FILTER_TEXT, $_GET['searchterm']);
817 }
818 else if (!empty($_GET['searchtags'])) {
819 $linksToDisplay = $LINKSDB->filter(LinkFilter::$FILTER_TAG, trim($_GET['searchtags']));
820 }
821 else {
822 $linksToDisplay = $LINKSDB;
823 }
f3db3774 824
c677013b 825 $nblinksToDisplay = 50; // Number of links to display.
822bffce
A		 826 // In URL, you can specificy the number of links. Example: nb=200 or nb=all for all links.
827 if (!empty($_GET['nb'])) {
828 $nblinksToDisplay = $_GET['nb']=='all' ? count($linksToDisplay) : max(intval($_GET['nb']), 1);
c677013b 829 }
45034273 830
482d67bd 831 $pageaddr=escape(index_url($_SERVER));
45034273
SS		 832 $latestDate = '';
833 $entries='';
834 $i=0;
835 $keys=array(); foreach($linksToDisplay as $key=>$value) { $keys[]=$key; } // No, I can't use array_keys().
fbd9e527 836 while ($i<$nblinksToDisplay && $i<count($keys))
45034273
SS		 837 {
838 $link = $linksToDisplay[$keys[$i]];
839 $guid = $pageaddr.'?'.smallHash($link['linkdate']);
840 $iso8601date = linkdate2iso8601($link['linkdate']);
841 $latestDate = max($latestDate,$iso8601date);
5f85fcd8 842 $absurl = $link['url'];
45034273 843 if (startsWith($absurl,'?')) $absurl=$pageaddr.$absurl; // make permalink URL absolute
5f85fcd8 844 $entries.='<entry><title>'.$link['title'].'</title>';
2abd3905
SS		 845 if ($usepermalinks===true)
846 $entries.='<link href="'.$guid.'" /><id>'.$guid.'</id>';
847 else
848 $entries.='<link href="'.$absurl.'" /><id>'.$guid.'</id>';
5f85fcd8 849 if (!$GLOBALS['config']['HIDE_TIMESTAMPS'] || isLoggedIn()) $entries.='<updated>'.escape($iso8601date).'</updated>';
2abd3905
SS		 850
851 // Add permalink in description
5f85fcd8 852 $descriptionlink = '(<a href="'.$guid.'">Permalink</a>)';
2abd3905 853 // If user wants permalinks first, put the final link in description
5f85fcd8
A		 854 if ($usepermalinks===true) $descriptionlink = '(<a href="'.$absurl.'">Link</a>)';
855 if (strlen($link['description'])>0) $descriptionlink = '<br>'.$descriptionlink;
2abd3905 856
90e5bd65
A		 857 $entries .= '<content type="html"><![CDATA['.
858 format_description($link['description'], $GLOBALS['redirector']) .
859 $descriptionlink . "]]></content>\n";
45034273
SS		 860 if ($link['tags']!='') // Adding tags to each ATOM entry (as mentioned in ATOM specification)
861 {
862 foreach(explode(' ',$link['tags']) as $tag)
5f85fcd8 863 { $entries.='<category scheme="'.$pageaddr.'" term="'.$tag.'" />'."\n"; }
45034273
SS		 864 }
865 $entries.="</entry>\n";
866 $i++;
867 }
868 $feed='<?xml version="1.0" encoding="UTF-8"?><feed xmlns="http://www.w3.org/2005/Atom">';
5f85fcd8
A		 869 $feed.='<title>'.$GLOBALS['title'].'</title>';
870 if (!$GLOBALS['config']['HIDE_TIMESTAMPS'] || isLoggedIn()) $feed.='<updated>'.escape($latestDate).'</updated>';
482d67bd 871 $feed.='<link rel="self" href="'.escape(server_url($_SERVER).$_SERVER["REQUEST_URI"]).'" />';
45034273
SS		 872 if (!empty($GLOBALS['config']['PUBSUBHUB_URL']))
873 {
874 $feed.='<!-- PubSubHubbub Discovery -->';
5f85fcd8 875 $feed.='<link rel="hub" href="'.escape($GLOBALS['config']['PUBSUBHUB_URL']).'" />';
45034273
SS		 876 $feed.='<!-- End Of PubSubHubbub Discovery -->';
877 }
5f85fcd8
A		 878 $feed.='<author><name>'.$pageaddr.'</name><uri>'.$pageaddr.'</uri></author>';
879 $feed.='<id>'.$pageaddr.'</id>'."\n\n"; // Yes, I know I should use a real IRI (RFC3987), but the site URL will do.
45034273 880 $feed.=$entries;
482d67bd 881 $feed.='</feed><!-- Cached version of '.escape(page_url($_SERVER)).' -->';
45034273 882 echo $feed;
bb8f712d 883
45034273
SS		 884 $cache->cache(ob_get_contents());
885 ob_end_flush();
886 exit;
887}
888
889// ------------------------------------------------------------------------------------------
890// Daily RSS feed: 1 RSS entry per day giving all the links on that day.
891// Gives the last 7 days (which have links).
892// This RSS feed cannot be filtered.
f3b8f9f0 893function showDailyRSS() {
45034273
SS		 894 // Cache system
895 $query = $_SERVER["QUERY_STRING"];
01e48f26
V		 896 $cache = new CachedPage(
897 $GLOBALS['config']['PAGECACHE'],
482d67bd 898 page_url($_SERVER),
01e48f26
V		 899 startsWith($query,'do=dailyrss') && !isLoggedIn()
900 );
f3b8f9f0
A		 901 $cached = $cache->cachedVersion();
902 if (!empty($cached)) {
903 echo $cached;
904 exit;
905 }
9f15ca9e 906
f3b8f9f0
A		 907 // If cached was not found (or not usable), then read the database and build the response:
908 // Read links from database (and filter private links if used it not logged in).
9f15ca9e 909 $LINKSDB = new LinkDB(
9c8752a2 910 $GLOBALS['config']['DATASTORE'],
02ad8fb6 911 isLoggedIn(),
90e5bd65
A		 912 $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
913 $GLOBALS['redirector']
9f15ca9e 914 );
bb8f712d 915
45034273
SS		 916 /* Some Shaarlies may have very few links, so we need to look
917 back in time (rsort()) until we have enough days ($nb_of_days).
918 */
f3b8f9f0
A		 919 $linkdates = array();
920 foreach ($LINKSDB as $linkdate => $value) {
921 $linkdates[] = $linkdate;
922 }
45034273 923 rsort($linkdates);
f3b8f9f0
A		 924 $nb_of_days = 7; // We take 7 days.
925 $today = Date('Ymd');
926 $days = array();
927
928 foreach ($linkdates as $linkdate) {
929 $day = substr($linkdate, 0, 8); // Extract day (without time)
930 if (strcmp($day,$today) < 0) {
931 if (empty($days[$day])) {
932 $days[$day] = array();
933 }
934 $days[$day][] = $linkdate;
935 }
936
937 if (count($days) > $nb_of_days) {
938 break; // Have we collected enough days?
45034273 939 }
45034273 940 }
bb8f712d 941
45034273
SS		 942 // Build the RSS feed.
943 header('Content-Type: application/rss+xml; charset=utf-8');
482d67bd 944 $pageaddr = escape(index_url($_SERVER));
45034273 945 echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0">';
f3b8f9f0
A		 946 echo '<channel>';
947 echo '<title>Daily - '. $GLOBALS['title'] . '</title>';
948 echo '<link>'. $pageaddr .'</link>';
949 echo '<description>Daily shared links</description>';
950 echo '<language>en-en</language>';
951 echo '<copyright>'. $pageaddr .'</copyright>'. PHP_EOL;
952
953 // For each day.
954 foreach ($days as $day => $linkdates) {
955 $daydate = linkdate2timestamp($day.'_000000'); // Full text date
45034273 956 $rfc822date = linkdate2rfc822($day.'_000000');
482d67bd 957 $absurl = escape(index_url($_SERVER).'?do=daily&day='.$day); // Absolute URL of the corresponding "Daily" page.
bb8f712d 958
45034273 959 // Build the HTML body of this RSS entry.
f3b8f9f0
A		 960 $html = '';
961 $href = '';
962 $links = array();
963
45034273 964 // We pre-format some fields for proper output.
f3b8f9f0 965 foreach ($linkdates as $linkdate) {
45034273 966 $l = $LINKSDB[$linkdate];
90e5bd65 967 $l['formatedDescription'] = format_description($l['description'], $GLOBALS['redirector']);
bb8f712d 968 $l['thumbnail'] = thumbnail($l['url']);
a5752e77 969 $l['timestamp'] = linkdate2timestamp($l['linkdate']);
f3b8f9f0 970 if (startsWith($l['url'], '?')) {
482d67bd 971 $l['url'] = index_url($_SERVER) . $l['url']; // make permalink URL absolute
f3b8f9f0
A		 972 }
973 $links[$linkdate] = $l;
45034273 974 }
f3b8f9f0 975
45034273 976 // Then build the HTML for this day:
bb8f712d 977 $tpl = new RainTPL;
f3b8f9f0
A		 978 $tpl->assign('title', $GLOBALS['title']);
979 $tpl->assign('daydate', $daydate);
980 $tpl->assign('absurl', $absurl);
981 $tpl->assign('links', $links);
982 $tpl->assign('rfc822date', escape($rfc822date));
983 $html = $tpl->draw('dailyrss', $return_string=true);
45034273 984
f3b8f9f0 985 echo $html . PHP_EOL;
bb8f712d 986 }
482d67bd 987 echo '</channel></rss><!-- Cached version of '. escape(page_url($_SERVER)) .' -->';
bb8f712d 988
45034273
SS		 989 $cache->cache(ob_get_contents());
990 ob_end_flush();
991 exit;
992}
993
38603b24
A		 994/**
995 * Show the 'Daily' page.
996 *
997 * @param PageBuilder $pageBuilder Template engine wrapper.
998 */
999function showDaily($pageBuilder)
45034273 1000{
9f15ca9e 1001 $LINKSDB = new LinkDB(
9c8752a2 1002 $GLOBALS['config']['DATASTORE'],
02ad8fb6 1003 isLoggedIn(),
90e5bd65
A		 1004 $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
1005 $GLOBALS['redirector']
9f15ca9e 1006 );
45034273
SS		 1007
1008 $day=Date('Ymd',strtotime('-1 day')); // Yesterday, in format YYYYMMDD.
1009 if (isset($_GET['day'])) $day=$_GET['day'];
bb8f712d 1010
45034273
SS		 1011 $days = $LINKSDB->days();
1012 $i = array_search($day,$days);
f3db3774 1013 if ($i===false) { $i=count($days)-1; $day=$days[$i]; }
bb8f712d
KT		 1014 $previousday='';
1015 $nextday='';
45034273
SS		 1016 if ($i!==false)
1017 {
f3db3774 1018 if ($i>=1) $previousday=$days[$i-1];
45034273
SS		 1019 if ($i<count($days)-1) $nextday=$days[$i+1];
1020 }
1021
9186ab95 1022 try {
822bffce 1023 $linksToDisplay = $LINKSDB->filter(LinkFilter::$FILTER_DAY, $day);
9186ab95
V		 1024 } catch (Exception $exc) {
1025 error_log($exc);
d1e2f8e5 1026 $linksToDisplay = array();
9186ab95
V		 1027 }
1028
45034273
SS		 1029 // We pre-format some fields for proper output.
1030 foreach($linksToDisplay as $key=>$link)
1031 {
5f85fcd8 1032
dd62b9ba
SS		 1033 $taglist = explode(' ',$link['tags']);
1034 uasort($taglist, 'strcasecmp');
1035 $linksToDisplay[$key]['taglist']=$taglist;
90e5bd65 1036 $linksToDisplay[$key]['formatedDescription'] = format_description($link['description'], $GLOBALS['redirector']);
bb8f712d 1037 $linksToDisplay[$key]['thumbnail'] = thumbnail($link['url']);
a5752e77 1038 $linksToDisplay[$key]['timestamp'] = linkdate2timestamp($link['linkdate']);
45034273 1039 }
bb8f712d 1040
45034273 1041 /* We need to spread the articles on 3 columns.
ad6c27b7 1042 I did not want to use a JavaScript lib like http://masonry.desandro.com/
bb8f712d 1043 so I manually spread entries with a simple method: I roughly evaluate the
45034273
SS		 1044 height of a div according to title and description length.
1045 */
1046 $columns=array(array(),array(),array()); // Entries to display, for each column.
1047 $fill=array(0,0,0); // Rough estimate of columns fill.
1048 foreach($linksToDisplay as $key=>$link)
1049 {
1050 // Roughly estimate length of entry (by counting characters)
1051 // Title: 30 chars = 1 line. 1 line is 30 pixels height.
1052 // Description: 836 characters gives roughly 342 pixel height.
ad6c27b7 1053 // This is not perfect, but it's usually OK.
45034273
SS		 1054 $length=strlen($link['title'])+(342*strlen($link['description']))/836;
1055 if ($link['thumbnail']) $length +=100; // 1 thumbnails roughly takes 100 pixels height.
1056 // Then put in column which is the less filled:
1057 $smallest=min($fill); // find smallest value in array.
1058 $index=array_search($smallest,$fill); // find index of this smallest value.
1059 array_push($columns[$index],$link); // Put entry in this column.
1060 $fill[$index]+=$length;
1061 }
38603b24 1062
6fc14d53
A		 1063 $data = array(
1064 'linksToDisplay' => $linksToDisplay,
1065 'linkcount' => count($LINKSDB),
1066 'cols' => $columns,
1067 'day' => linkdate2timestamp($day.'_000000'),
1068 'previousday' => $previousday,
1069 'nextday' => $nextday,
1070 );
1071 $pluginManager = PluginManager::getInstance();
1072 $pluginManager->executeHooks('render_daily', $data, array('loggedin' => isLoggedIn()));
1073
1074 foreach ($data as $key => $value) {
38603b24 1075 $pageBuilder->assign($key, $value);
6fc14d53
A		 1076 }
1077
38603b24 1078 $pageBuilder->renderPage('daily');
45034273
SS		 1079 exit;
1080}
1081
6fc14d53
A		 1082// Renders the linklist
1083function showLinkList($PAGE, $LINKSDB) {
1084 buildLinkList($PAGE,$LINKSDB); // Compute list of links to display
1085 $PAGE->renderPage('linklist');
1086}
1087
45034273
SS		 1088
1089// ------------------------------------------------------------------------------------------
1090// Render HTML page (according to URL parameters and user rights)
1091function renderPage()
1092{
9f15ca9e 1093 $LINKSDB = new LinkDB(
9c8752a2 1094 $GLOBALS['config']['DATASTORE'],
02ad8fb6 1095 isLoggedIn(),
90e5bd65
A		 1096 $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
1097 $GLOBALS['redirector']
9f15ca9e 1098 );
45034273 1099
510377d2
A		 1100 $updater = new Updater(
1101 read_updates_file($GLOBALS['config']['UPDATES_FILE']),
1102 $GLOBALS,
1103 $LINKSDB,
1104 isLoggedIn()
1105 );
1106 try {
1107 $newUpdates = $updater->update();
1108 if (! empty($newUpdates)) {
1109 write_updates_file(
1110 $GLOBALS['config']['UPDATES_FILE'],
1111 $updater->getDoneUpdates()
1112 );
1113 }
1114 }
1115 catch(Exception $e) {
1116 die($e->getMessage());
1117 }
1118
6fc14d53
A		 1119 $PAGE = new pageBuilder;
1120
1121 // Determine which page will be rendered.
1122 $query = (isset($_SERVER['QUERY_STRING'])) ? $_SERVER['QUERY_STRING'] : '';
1123 $targetPage = Router::findPage($query, $_GET, isLoggedIn());
1124
1125 // Call plugin hooks for header, footer and includes, specifying which page will be rendered.
1126 // Then assign generated data to RainTPL.
1127 $common_hooks = array(
fea5db7a 1128 'includes',
6fc14d53
A		 1129 'header',
1130 'footer',
6fc14d53
A		 1131 );
1132 $pluginManager = PluginManager::getInstance();
1133 foreach($common_hooks as $name) {
1134 $plugin_data = array();
1135 $pluginManager->executeHooks('render_' . $name, $plugin_data,
1136 array(
1137 'target' => $targetPage,
1138 'loggedin' => isLoggedIn()
1139 )
1140 );
1141 $PAGE->assign('plugins_' . $name, $plugin_data);
1142 }
1143
45034273 1144 // -------- Display login form.
6fc14d53 1145 if ($targetPage == Router::$PAGE_LOGIN)
45034273
SS		 1146 {
1147 if ($GLOBALS['config']['OPEN_SHAARLI']) { header('Location: ?'); exit; } // No need to login for open Shaarli
1148 $token=''; if (ban_canLogin()) $token=getToken(); // Do not waste token generation if not useful.
45034273 1149 $PAGE->assign('token',$token);
5f85fcd8 1150 $PAGE->assign('returnurl',(isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']):''));
45034273
SS		 1151 $PAGE->renderPage('loginform');
1152 exit;
1153 }
1154 // -------- User wants to logout.
1155 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=logout'))
1156 {
01e48f26 1157 invalidateCaches($GLOBALS['config']['PAGECACHE']);
45034273
SS		 1158 logout();
1159 header('Location: ?');
1160 exit;
1161 }
1162
1163 // -------- Picture wall
6fc14d53 1164 if ($targetPage == Router::$PAGE_PICWALL)
45034273 1165 {
ad6c27b7 1166 // Optionally filter the results:
822bffce
A		 1167 if (!empty($_GET['searchterm'])) {
1168 $links = $LINKSDB->filter(LinkFilter::$FILTER_TEXT, $_GET['searchterm']);
1169 }
1170 elseif (! empty($_GET['searchtags'])) {
1171 $links = $LINKSDB->filter(LinkFilter::$FILTER_TAG, trim($_GET['searchtags']));
1172 }
1173 else {
1174 $links = $LINKSDB;
1175 }
f3db3774 1176
822bffce 1177 $linksToDisplay = array();
45034273
SS		 1178
1179 // Get only links which have a thumbnail.
1180 foreach($links as $link)
1181 {
5f85fcd8 1182 $permalink='?'.escape(smallhash($link['linkdate']));
45034273
SS		 1183 $thumb=lazyThumbnail($link['url'],$permalink);
1184 if ($thumb!='') // Only output links which have a thumbnail.
1185 {
1186 $link['thumbnail']=$thumb; // Thumbnail HTML code.
45034273
SS		 1187 $linksToDisplay[]=$link; // Add to array.
1188 }
1189 }
f3db3774 1190
6fc14d53
A		 1191 $data = array(
1192 'linkcount' => count($LINKSDB),
1193 'linksToDisplay' => $linksToDisplay,
1194 );
1195 $pluginManager->executeHooks('render_picwall', $data, array('loggedin' => isLoggedIn()));
1196
1197 foreach ($data as $key => $value) {
1198 $PAGE->assign($key, $value);
1199 }
1200
45034273
SS		 1201 $PAGE->renderPage('picwall');
1202 exit;
1203 }
1204
1205 // -------- Tag cloud
6fc14d53 1206 if ($targetPage == Router::$PAGE_TAGCLOUD)
45034273
SS		 1207 {
1208 $tags= $LINKSDB->allTags();
a037ac69 1209
45034273
SS		 1210 // We sort tags alphabetically, then choose a font size according to count.
1211 // First, find max value.
f1e96a06
A		 1212 $maxcount = 0;
1213 foreach ($tags as $value) {
1214 $maxcount = max($maxcount, $value);
1215 }
1216
1217 // Sort tags alphabetically: case insensitive, support locale if avalaible.
1218 uksort($tags, function($a, $b) {
1219 // Collator is part of PHP intl.
1220 if (class_exists('Collator')) {
7eb0a832
A		 1221 $c = new Collator(setlocale(LC_COLLATE, 0));
1222 if (!intl_is_failure(intl_get_error_code())) {
1223 return $c->compare($a, $b);
1224 }
f1e96a06 1225 }
7eb0a832 1226 return strcasecmp($a, $b);
f1e96a06
A		 1227 });
1228
45034273
SS		 1229 $tagList=array();
1230 foreach($tags as $key=>$value)
f1e96a06 1231 // Tag font size scaling: default 15 and 30 logarithm bases affect scaling, 22 and 6 are arbitrary font sizes for max and min sizes.
45034273 1232 {
1e3b2740 1233 $tagList[$key] = array('count'=>$value,'size'=>log($value, 15) / log($maxcount, 30) * (22-6) + 6);
45034273 1234 }
6fc14d53
A		 1235
1236 $data = array(
1237 'linkcount' => count($LINKSDB),
1238 'tags' => $tagList,
1239 );
1240 $pluginManager->executeHooks('render_tagcloud', $data, array('loggedin' => isLoggedIn()));
1241
1242 foreach ($data as $key => $value) {
1243 $PAGE->assign($key, $value);
1244 }
1245
45034273 1246 $PAGE->renderPage('tagcloud');
bb8f712d 1247 exit;
45034273
SS		 1248 }
1249
38603b24
A		 1250 // Daily page.
1251 if ($targetPage == Router::$PAGE_DAILY) {
1252 showDaily($PAGE);
1253 }
1254
8f8113b9
A		 1255 // Display openseach plugin (XML)
1256 if ($targetPage == Router::$PAGE_OPENSEARCH) {
1257 header('Content-Type: application/xml; charset=utf-8');
1258 $PAGE->assign('serverurl', index_url($_SERVER));
1259 $PAGE->renderPage('opensearch');
1260 exit;
1261 }
1262
45034273
SS		 1263 // -------- User clicks on a tag in a link: The tag is added to the list of searched tags (searchtags=...)
1264 if (isset($_GET['addtag']))
1265 {
1266 // Get previous URL (http_referer) and add the tag to the searchtags parameters in query.
1267 if (empty($_SERVER['HTTP_REFERER'])) { header('Location: ?searchtags='.urlencode($_GET['addtag'])); exit; } // In case browser does not send HTTP_REFERER
1268 parse_str(parse_url($_SERVER['HTTP_REFERER'],PHP_URL_QUERY), $params);
732e683b 1269
775803a0
A		 1270 // Prevent redirection loop
1271 if (isset($params['addtag'])) {
1272 unset($params['addtag']);
1273 }
1274
732e683b
FE		 1275 // Check if this tag is already in the search query and ignore it if it is.
1276 // Each tag is always separated by a space
6ac95d9c
A		 1277 if (isset($params['searchtags'])) {
1278 $current_tags = explode(' ', $params['searchtags']);
1279 } else {
1280 $current_tags = array();
1281 }
732e683b
FE		 1282 $addtag = true;
1283 foreach ($current_tags as $value) {
1284 if ($value === $_GET['addtag']) {
1285 $addtag = false;
1286 break;
1287 }
1288 }
1289 // Append the tag if necessary
1290 if (empty($params['searchtags'])) {
1291 $params['searchtags'] = trim($_GET['addtag']);
1292 }
1293 else if ($addtag) {
1294 $params['searchtags'] = trim($params['searchtags']).' '.trim($_GET['addtag']);
1295 }
1296
45034273
SS		 1297 unset($params['page']); // We also remove page (keeping the same page has no sense, since the results are different)
1298 header('Location: ?'.http_build_query($params));
1299 exit;
1300 }
1301
1302 // -------- User clicks on a tag in result count: Remove the tag from the list of searched tags (searchtags=...)
775803a0 1303 if (isset($_GET['removetag'])) {
45034273 1304 // Get previous URL (http_referer) and remove the tag from the searchtags parameters in query.
775803a0
A		 1305 if (empty($_SERVER['HTTP_REFERER'])) {
1306 header('Location: ?');
1307 exit;
1308 }
1309
1310 // In case browser does not send HTTP_REFERER
1311 parse_str(parse_url($_SERVER['HTTP_REFERER'], PHP_URL_QUERY), $params);
1312
1313 // Prevent redirection loop
1314 if (isset($params['removetag'])) {
1315 unset($params['removetag']);
1316 }
1317
1318 if (isset($params['searchtags'])) {
822bffce 1319 $tags = explode(' ', $params['searchtags']);
2c75f8e7
A		 1320 // Remove value from array $tags.
1321 $tags = array_diff($tags, array($_GET['removetag']));
1322 $params['searchtags'] = implode(' ',$tags);
1323
1324 if (empty($params['searchtags'])) {
775803a0 1325 unset($params['searchtags']);
775803a0 1326 }
2c75f8e7 1327
45034273
SS		 1328 unset($params['page']); // We also remove page (keeping the same page has no sense, since the results are different)
1329 }
1330 header('Location: ?'.http_build_query($params));
1331 exit;
1332 }
1333
1334 // -------- User wants to change the number of links per page (linksperpage=...)
775803a0
A		 1335 if (isset($_GET['linksperpage'])) {
1336 if (is_numeric($_GET['linksperpage'])) {
1337 $_SESSION['LINKS_PER_PAGE']=abs(intval($_GET['linksperpage']));
1338 }
1339
1340 header('Location: '. generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('linksperpage')));
45034273
SS		 1341 exit;
1342 }
bb8f712d 1343
45034273 1344 // -------- User wants to see only private links (toggle)
775803a0
A		 1345 if (isset($_GET['privateonly'])) {
1346 if (empty($_SESSION['privateonly'])) {
1347 $_SESSION['privateonly'] = 1; // See only private links
1348 } else {
45034273
SS		 1349 unset($_SESSION['privateonly']); // See all links
1350 }
775803a0
A		 1351
1352 header('Location: '. generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('privateonly')));
45034273
SS		 1353 exit;
1354 }
1355
1356 // -------- Handle other actions allowed for non-logged in users:
1357 if (!isLoggedIn())
1358 {
ad6c27b7 1359 // User tries to post new link but is not logged in:
45034273
SS		 1360 // Show login screen, then redirect to ?post=...
1361 if (isset($_GET['post']))
1362 {
a1795ddc 1363 header('Location: ?do=login&post='.urlencode($_GET['post']).(!empty($_GET['title'])?'&title='.urlencode($_GET['title']):'').(!empty($_GET['description'])?'&description='.urlencode($_GET['description']):'').(!empty($_GET['source'])?'&source='.urlencode($_GET['source']):'')); // Redirect to login page, then back to post link.
45034273
SS		 1364 exit;
1365 }
aedc912d
FE		 1366
1367 // Same case as above except that user tried to access ?do=addlink without being logged in
1368 // Note: passing empty parameters makes Shaarli generate default URLs and descriptions.
1369 if (isset($_GET['do']) && $_GET['do'] === 'addlink') {
1370 header('Location: ?do=login&post=');
1371 exit;
1372 }
6fc14d53 1373 showLinkList($PAGE, $LINKSDB);
5fbabbb9
A		 1374 if (isset($_GET['edit_link'])) {
1375 header('Location: ?do=login&edit_link='. escape($_GET['edit_link']));
1376 exit;
1377 }
1378
ad6c27b7 1379 exit; // Never remove this one! All operations below are reserved for logged in user.
45034273
SS		 1380 }
1381
1382 // -------- All other functions are reserved for the registered user:
1383
1384 // -------- Display the Tools menu if requested (import/export/bookmarklet...)
6fc14d53 1385 if ($targetPage == Router::$PAGE_TOOLS)
45034273 1386 {
6fc14d53
A		 1387 $data = array(
1388 'linkcount' => count($LINKSDB),
1389 'pageabsaddr' => index_url($_SERVER),
1390 );
1391 $pluginManager->executeHooks('render_tools', $data);
1392
1393 foreach ($data as $key => $value) {
1394 $PAGE->assign($key, $value);
1395 }
1396
45034273
SS		 1397 $PAGE->renderPage('tools');
1398 exit;
1399 }
1400
1401 // -------- User wants to change his/her password.
6fc14d53 1402 if ($targetPage == Router::$PAGE_CHANGEPASSWORD)
45034273
SS		 1403 {
1404 if ($GLOBALS['config']['OPEN_SHAARLI']) die('You are not supposed to change a password on an Open Shaarli.');
1405 if (!empty($_POST['setpassword']) && !empty($_POST['oldpassword']))
1406 {
ad6c27b7 1407 if (!tokenOk($_POST['token'])) die('Wrong token.'); // Go away!
45034273
SS		 1408
1409 // Make sure old password is correct.
1410 $oldhash = sha1($_POST['oldpassword'].$GLOBALS['login'].$GLOBALS['salt']);
fe16b01e 1411 if ($oldhash!=$GLOBALS['hash']) { echo '<script>alert("The old password is not correct.");document.location=\'?do=changepasswd\';</script>'; exit; }
45034273
SS		 1412 // Save new password
1413 $GLOBALS['salt'] = sha1(uniqid('',true).'_'.mt_rand()); // Salt renders rainbow-tables attacks useless.
1414 $GLOBALS['hash'] = sha1($_POST['setpassword'].$GLOBALS['login'].$GLOBALS['salt']);
dd484b90
A		 1415 try {
1416 writeConfig($GLOBALS, isLoggedIn());
1417 }
1418 catch(Exception $e) {
1419 error_log(
1420 'ERROR while writing config file after changing password.' . PHP_EOL .
1421 $e->getMessage()
1422 );
1423
1424 // TODO: do not handle exceptions/errors in JS.
1425 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do=tools\';</script>';
1426 exit;
1427 }
fe16b01e 1428 echo '<script>alert("Your password has been changed.");document.location=\'?do=tools\';</script>';
45034273
SS		 1429 exit;
1430 }
1431 else // show the change password form.
1432 {
45034273
SS		 1433 $PAGE->assign('linkcount',count($LINKSDB));
1434 $PAGE->assign('token',getToken());
1435 $PAGE->renderPage('changepassword');
1436 exit;
1437 }
1438 }
1439
1440 // -------- User wants to change configuration
6fc14d53 1441 if ($targetPage == Router::$PAGE_CONFIGURE)
45034273
SS		 1442 {
1443 if (!empty($_POST['title']) )
1444 {
ad6c27b7 1445 if (!tokenOk($_POST['token'])) die('Wrong token.'); // Go away!
45034273
SS		 1446 $tz = 'UTC';
1447 if (!empty($_POST['continent']) && !empty($_POST['city']))
d1e2f8e5 1448 if (isTimeZoneValid($_POST['continent'],$_POST['city']))
45034273
SS		 1449 $tz = $_POST['continent'].'/'.$_POST['city'];
1450 $GLOBALS['timezone'] = $tz;
1451 $GLOBALS['title']=$_POST['title'];
ebb2880d 1452 $GLOBALS['titleLink']=$_POST['titleLink'];
45034273
SS		 1453 $GLOBALS['redirector']=$_POST['redirector'];
1454 $GLOBALS['disablesessionprotection']=!empty($_POST['disablesessionprotection']);
bb8f712d 1455 $GLOBALS['privateLinkByDefault']=!empty($_POST['privateLinkByDefault']);
ed5b38dd 1456 $GLOBALS['config']['ENABLE_RSS_PERMALINKS']= !empty($_POST['enableRssPermalinks']);
329e0768 1457 $GLOBALS['config']['ENABLE_UPDATECHECK'] = !empty($_POST['updateCheck']);
caee7ff9 1458 $GLOBALS['config']['HIDE_PUBLIC_LINKS'] = !empty($_POST['hidePublicLinks']);
dd484b90
A		 1459 try {
1460 writeConfig($GLOBALS, isLoggedIn());
1461 }
1462 catch(Exception $e) {
1463 error_log(
1464 'ERROR while writing config file after configuration update.' . PHP_EOL .
1465 $e->getMessage()
1466 );
1467
1468 // TODO: do not handle exceptions/errors in JS.
1469 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do=tools\';</script>';
1470 exit;
1471 }
fe16b01e 1472 echo '<script>alert("Configuration was saved.");document.location=\'?do=tools\';</script>';
45034273
SS		 1473 exit;
1474 }
1475 else // Show the configuration form.
1476 {
45034273
SS		 1477 $PAGE->assign('linkcount',count($LINKSDB));
1478 $PAGE->assign('token',getToken());
5f85fcd8
A		 1479 $PAGE->assign('title', empty($GLOBALS['title']) ? '' : $GLOBALS['title'] );
1480 $PAGE->assign('redirector', empty($GLOBALS['redirector']) ? '' : $GLOBALS['redirector'] );
d1e2f8e5
V		 1481 list($timezone_form, $timezone_js) = generateTimeZoneForm($GLOBALS['timezone']);
1482 $PAGE->assign('timezone_form', $timezone_form);
45034273
SS		 1483 $PAGE->assign('timezone_js',$timezone_js);
1484 $PAGE->renderPage('configure');
1485 exit;
1486 }
1487 }
1488
1489 // -------- User wants to rename a tag or delete it
6fc14d53 1490 if ($targetPage == Router::$PAGE_CHANGETAG)
45034273 1491 {
6a6aa2b9
A		 1492 if (empty($_POST['fromtag']) || (empty($_POST['totag']) && isset($_POST['renametag']))) {
1493 $PAGE->assign('linkcount', count($LINKSDB));
1494 $PAGE->assign('token', getToken());
bdd1715b 1495 $PAGE->assign('tags', $LINKSDB->allTags());
45034273
SS		 1496 $PAGE->renderPage('changetag');
1497 exit;
1498 }
6a6aa2b9
A		 1499
1500 if (!tokenOk($_POST['token'])) {
1501 die('Wrong token.');
1502 }
45034273
SS		 1503
1504 // Delete a tag:
6a6aa2b9 1505 if (isset($_POST['deletetag']) && !empty($_POST['fromtag'])) {
45034273 1506 $needle=trim($_POST['fromtag']);
822bffce
A		 1507 // True for case-sensitive tag search.
1508 $linksToAlter = $LINKSDB->filter(LinkFilter::$FILTER_TAG, $needle, true);
45034273
SS		 1509 foreach($linksToAlter as $key=>$value)
1510 {
1511 $tags = explode(' ',trim($value['tags']));
1512 unset($tags[array_search($needle,$tags)]); // Remove tag.
1513 $value['tags']=trim(implode(' ',$tags));
1514 $LINKSDB[$key]=$value;
1515 }
2e28269b 1516 $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']);
fe16b01e 1517 echo '<script>alert("Tag was removed from '.count($linksToAlter).' links.");document.location=\'?\';</script>';
45034273
SS		 1518 exit;
1519 }
1520
1521 // Rename a tag:
6a6aa2b9 1522 if (isset($_POST['renametag']) && !empty($_POST['fromtag']) && !empty($_POST['totag'])) {
45034273 1523 $needle=trim($_POST['fromtag']);
822bffce
A		 1524 // True for case-sensitive tag search.
1525 $linksToAlter = $LINKSDB->filter(LinkFilter::$FILTER_TAG, $needle, true);
45034273
SS		 1526 foreach($linksToAlter as $key=>$value)
1527 {
1528 $tags = explode(' ',trim($value['tags']));
ad6c27b7 1529 $tags[array_search($needle,$tags)] = trim($_POST['totag']); // Replace tags value.
45034273
SS		 1530 $value['tags']=trim(implode(' ',$tags));
1531 $LINKSDB[$key]=$value;
1532 }
01e48f26 1533 $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']); // Save to disk.
fe16b01e 1534 echo '<script>alert("Tag was renamed in '.count($linksToAlter).' links.");document.location=\'?searchtags='.urlencode($_POST['totag']).'\';</script>';
45034273
SS		 1535 exit;
1536 }
1537 }
1538
ad6c27b7 1539 // -------- User wants to add a link without using the bookmarklet: Show form.
6fc14d53 1540 if ($targetPage == Router::$PAGE_ADDLINK)
45034273 1541 {
45034273
SS		 1542 $PAGE->assign('linkcount',count($LINKSDB));
1543 $PAGE->renderPage('addlink');
1544 exit;
1545 }
1546
1547 // -------- User clicked the "Save" button when editing a link: Save link to database.
1548 if (isset($_POST['save_edit']))
1549 {
5a23950c
A		 1550 // Go away!
1551 if (! tokenOk($_POST['token'])) {
1552 die('Wrong token.');
1553 }
1554 // Remove multiple spaces.
1555 $tags = trim(preg_replace('/\s\s+/', ' ', $_POST['lf_tags']));
ce354bf1
A		 1556 // Remove first '-' char in tags.
1557 $tags = preg_replace('/(^| )\-/', '$1', $tags);
5a23950c
A		 1558 // Remove duplicates.
1559 $tags = implode(' ', array_unique(explode(' ', $tags)));
1560 $linkdate = $_POST['lf_linkdate'];
feebc6d4 1561 $url = trim($_POST['lf_url']);
5a23950c
A		 1562 if (! startsWith($url, 'http:') && ! startsWith($url, 'https:')
1563 && ! startsWith($url, 'ftp:') && ! startsWith($url, 'magnet:')
1564 && ! startsWith($url, '?') && ! startsWith($url, 'javascript:')
1565 ) {
1566 $url = 'http://' . $url;
1567 }
1568
1569 $link = array(
1570 'title' => trim($_POST['lf_title']),
1571 'url' => $url,
1572 'description' => trim($_POST['lf_description']),
1573 'private' => (isset($_POST['lf_private']) ? 1 : 0),
1574 'linkdate' => $linkdate,
1575 'tags' => str_replace(',', ' ', $tags)
1576 );
1577 // If title is empty, use the URL as title.
1578 if ($link['title'] == '') {
1579 $link['title'] = $link['url'];
1580 }
6fc14d53
A		 1581
1582 $pluginManager->executeHooks('save_link', $link);
1583
45034273 1584 $LINKSDB[$linkdate] = $link;
5a23950c 1585 $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']);
45034273
SS		 1586 pubsubhub();
1587
1588 // If we are called from the bookmarklet, we must close the popup:
d01c2342
A		 1589 if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) {
1590 echo '<script>self.close();</script>';
1591 exit;
1592 }
1593
fd50e14c 1594 $returnurl = !empty($_POST['returnurl']) ? $_POST['returnurl'] : '?';
775803a0 1595 $location = generateLocation($returnurl, $_SERVER['HTTP_HOST'], array('addlink', 'post', 'edit_link'));
5a23950c
A		 1596 // Scroll to the link which has been edited.
1597 $location .= '#' . smallHash($_POST['lf_linkdate']);
1598 // After saving the link, redirect to the page the user was on.
1599 header('Location: '. $location);
45034273
SS		 1600 exit;
1601 }
1602
1603 // -------- User clicked the "Cancel" button when editing a link.
1604 if (isset($_POST['cancel_edit']))
1605 {
ad6c27b7 1606 // If we are called from the bookmarklet, we must close the popup:
d33c5d4c 1607 if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) { echo '<script>self.close();</script>'; exit; }
45034273 1608 $returnurl = ( isset($_POST['returnurl']) ? $_POST['returnurl'] : '?' );
b342b2a4 1609 $returnurl .= '#'.smallHash($_POST['lf_linkdate']); // Scroll to the link which has been edited.
775803a0 1610 $returnurl = generateLocation($returnurl, $_SERVER['HTTP_HOST'], array('addlink', 'post', 'edit_link'));
45034273
SS		 1611 header('Location: '.$returnurl); // After canceling, redirect to the page the user was on.
1612 exit;
1613 }
1614
ad6c27b7 1615 // -------- User clicked the "Delete" button when editing a link: Delete link from database.
45034273
SS		 1616 if (isset($_POST['delete_link']))
1617 {
1618 if (!tokenOk($_POST['token'])) die('Wrong token.');
1619 // We do not need to ask for confirmation:
ad6c27b7 1620 // - confirmation is handled by JavaScript
45034273
SS		 1621 // - we are protected from XSRF by the token.
1622 $linkdate=$_POST['lf_linkdate'];
6fc14d53
A		 1623
1624 $pluginManager->executeHooks('delete_link', $LINKSDB[$linkdate]);
1625
45034273 1626 unset($LINKSDB[$linkdate]);
01e48f26 1627 $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']); // save to disk
45034273
SS		 1628
1629 // If we are called from the bookmarklet, we must close the popup:
d33c5d4c 1630 if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) { echo '<script>self.close();</script>'; exit; }
d528433d 1631 // Pick where we're going to redirect
1632 // =============================================================
1633 // Basically, we can't redirect to where we were previously if it was a permalink
1634 // or an edit_link, because it would 404.
1635 // Cases:
1636 // - / : nothing in $_GET, redirect to self
1637 // - /?page : redirect to self
d33c5d4c 1638 // - /?searchterm : redirect to self (there might be other links)
d528433d 1639 // - /?searchtags : redirect to self
1640 // - /permalink : redirect to / (the link does not exist anymore)
1641 // - /?edit_link : redirect to / (the link does not exist anymore)
1642 // PHP treats the permalink as a $_GET variable, so we need to check if every condition for self
1643 // redirect is not satisfied, and only then redirect to /
1644 $location = "?";
1645 // Self redirection
775803a0
A		 1646 if (count($_GET) == 0
1647 || isset($_GET['page'])
1648 || isset($_GET['searchterm'])
1649 || isset($_GET['searchtags'])
1650 ) {
d528433d 1651 if (isset($_POST['returnurl'])) {
1652 $location = $_POST['returnurl']; // Handle redirects given by the form
775803a0
A		 1653 } else {
1654 $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('delete_link'));
d528433d 1655 }
1656 }
1657
1658 header('Location: ' . $location); // After deleting the link, redirect to appropriate location
45034273
SS		 1659 exit;
1660 }
1661
1662 // -------- User clicked the "EDIT" button on a link: Display link edit form.
1663 if (isset($_GET['edit_link']))
1664 {
1665 $link = $LINKSDB[$_GET['edit_link']]; // Read database
1666 if (!$link) { header('Location: ?'); exit; } // Link not found in database.
6fc14d53
A		 1667 $data = array(
1668 'linkcount' => count($LINKSDB),
1669 'link' => $link,
1670 'link_is_new' => false,
1671 'token' => getToken(),
1672 'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
1673 'tags' => $LINKSDB->allTags(),
1674 );
1675 $pluginManager->executeHooks('render_editlink', $data);
1676
1677 foreach ($data as $key => $value) {
1678 $PAGE->assign($key, $value);
1679 }
1680
45034273
SS		 1681 $PAGE->renderPage('editlink');
1682 exit;
1683 }
1684
1685 // -------- User want to post a new link: Display link edit form.
d9d776af 1686 if (isset($_GET['post'])) {
1557cefb 1687 $url = cleanup_url(escape($_GET['post']));
45034273
SS		 1688
1689 $link_is_new = false;
9e1724f1 1690 // Check if URL is not already in database (in this case, we will edit the existing link)
ef591e7e 1691 $link = $LINKSDB->getLinkFromUrl($url);
45034273
SS		 1692 if (!$link)
1693 {
9e1724f1 1694 $link_is_new = true;
45034273 1695 $linkdate = strval(date('Ymd_His'));
9e1724f1 1696 // Get title if it was provided in URL (by the bookmarklet).
739dc243 1697 $title = empty($_GET['title']) ? '' : escape($_GET['title']);
9e1724f1 1698 // Get description if it was provided in URL (by the bookmarklet). [Bronco added that]
739dc243
A		 1699 $description = empty($_GET['description']) ? '' : escape($_GET['description']);
1700 $tags = empty($_GET['tags']) ? '' : escape($_GET['tags']);
1701 $private = !empty($_GET['private']) && $_GET['private'] === "1" ? 1 : 0;
26c50346 1702 // If this is an HTTP(S) link, we try go get the page to extract the title (otherwise we will to straight to the edit form.)
ef591e7e 1703 if (empty($title) && strpos(get_url_scheme($url), 'http') !== false) {
451314eb 1704 // Short timeout to keep the application responsive
1557cefb 1705 list($headers, $content) = get_http_response($url, 4);
451314eb 1706 if (strpos($headers[0], '200 OK') !== false) {
1557cefb
A		 1707 // Retrieve charset.
1708 $charset = get_charset($headers, $content);
1709 // Extract title.
1710 $title = html_extract_title($content);
1711 // Re-encode title in utf-8 if necessary.
1712 if (! empty($title) && $charset != 'utf-8') {
1713 $title = mb_convert_encoding($title, $charset, 'utf-8');
9e1724f1
A		 1714 }
1715 }
45034273 1716 }
1557cefb 1717
9e1724f1
A		 1718 if ($url == '') {
1719 $url = '?' . smallHash($linkdate);
1720 $title = 'Note: ';
27646ca5 1721 }
1557cefb 1722
9e1724f1
A		 1723 $link = array(
1724 'linkdate' => $linkdate,
1725 'title' => $title,
ef591e7e 1726 'url' => $url,
9e1724f1
A		 1727 'description' => $description,
1728 'tags' => $tags,
1729 'private' => $private
1730 );
45034273
SS		 1731 }
1732
6fc14d53
A		 1733 $data = array(
1734 'linkcount' => count($LINKSDB),
1735 'link' => $link,
1736 'link_is_new' => $link_is_new,
1737 'token' => getToken(), // XSRF protection.
1738 'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
1739 'source' => (isset($_GET['source']) ? $_GET['source'] : ''),
1740 'tags' => $LINKSDB->allTags(),
1741 );
1742 $pluginManager->executeHooks('render_editlink', $data);
1743
1744 foreach ($data as $key => $value) {
1745 $PAGE->assign($key, $value);
1746 }
1747
45034273
SS		 1748 $PAGE->renderPage('editlink');
1749 exit;
1750 }
1751
1752 // -------- Export as Netscape Bookmarks HTML file.
6fc14d53 1753 if ($targetPage == Router::$PAGE_EXPORT)
45034273
SS		 1754 {
1755 if (empty($_GET['what']))
1756 {
45034273
SS		 1757 $PAGE->assign('linkcount',count($LINKSDB));
1758 $PAGE->renderPage('export');
1759 exit;
1760 }
1761 $exportWhat=$_GET['what'];
ad6c27b7 1762 if (!array_intersect(array('all','public','private'),array($exportWhat))) die('What are you trying to export???');
45034273
SS		 1763
1764 header('Content-Type: text/html; charset=utf-8');
1765 header('Content-disposition: attachment; filename=bookmarks_'.$exportWhat.'_'.strval(date('Ymd_His')).'.html');
1766 $currentdate=date('Y/m/d H:i:s');
1767 echo <<<HTML
1768<!DOCTYPE NETSCAPE-Bookmark-file-1>
1769<!-- This is an automatically generated file.
1770 It will be read and overwritten.
1771 DO NOT EDIT! -->
1772<!-- Shaarli {$exportWhat} bookmarks export on {$currentdate} -->
1773<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8">
1774<TITLE>Bookmarks</TITLE>
1775<H1>Bookmarks</H1>
1776HTML;
1777 foreach($LINKSDB as $link)
1778 {
1779 if ($exportWhat=='all' ||
1780 ($exportWhat=='private' && $link['private']!=0) ||
1781 ($exportWhat=='public' && $link['private']==0))
1782 {
5f85fcd8
A		 1783 echo '<DT><A HREF="'.$link['url'].'" ADD_DATE="'.linkdate2timestamp($link['linkdate']).'" PRIVATE="'.$link['private'].'"';
1784 if ($link['tags']!='') echo ' TAGS="'.str_replace(' ',',',$link['tags']).'"';
1785 echo '>'.$link['title']."</A>\n";
1786 if ($link['description']!='') echo '<DD>'.$link['description']."\n";
45034273
SS		 1787 }
1788 }
1789 exit;
1790 }
1791
1792 // -------- User is uploading a file for import
1793 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=upload'))
1794 {
1795 // If file is too big, some form field may be missing.
1796 if (!isset($_POST['token']) || (!isset($_FILES)) || (isset($_FILES['filetoupload']['size']) && $_FILES['filetoupload']['size']==0))
1797 {
1798 $returnurl = ( empty($_SERVER['HTTP_REFERER']) ? '?' : $_SERVER['HTTP_REFERER'] );
5f85fcd8 1799 echo '<script>alert("The file you are trying to upload is probably bigger than what this webserver can accept ('.getMaxFileSize().' bytes). Please upload in smaller chunks.");document.location=\''.escape($returnurl).'\';</script>';
45034273
SS		 1800 exit;
1801 }
1802 if (!tokenOk($_POST['token'])) die('Wrong token.');
1803 importFile();
1804 exit;
1805 }
1806
1807 // -------- Show upload/import dialog:
6fc14d53 1808 if ($targetPage == Router::$PAGE_IMPORT)
45034273 1809 {
45034273
SS		 1810 $PAGE->assign('linkcount',count($LINKSDB));
1811 $PAGE->assign('token',getToken());
1812 $PAGE->assign('maxfilesize',getMaxFileSize());
1813 $PAGE->renderPage('import');
1814 exit;
1815 }
1816
dea0ba28
A		 1817 // Plugin administration page
1818 if ($targetPage == Router::$PAGE_PLUGINSADMIN) {
1819 $pluginMeta = $pluginManager->getPluginsMeta();
1820
1821 // Split plugins into 2 arrays: ordered enabled plugins and disabled.
1822 $enabledPlugins = array_filter($pluginMeta, function($v) { return $v['order'] !== false; });
1823 // Load parameters.
1824 $enabledPlugins = load_plugin_parameter_values($enabledPlugins, $GLOBALS['plugins']);
1825 uasort(
1826 $enabledPlugins,
1827 function($a, $b) { return $a['order'] - $b['order']; }
1828 );
1829 $disabledPlugins = array_filter($pluginMeta, function($v) { return $v['order'] === false; });
1830
1831 $PAGE->assign('enabledPlugins', $enabledPlugins);
1832 $PAGE->assign('disabledPlugins', $disabledPlugins);
1833 $PAGE->renderPage('pluginsadmin');
1834 exit;
1835 }
1836
1837 // Plugin administration form action
1838 if ($targetPage == Router::$PAGE_SAVE_PLUGINSADMIN) {
1839 try {
1840 if (isset($_POST['parameters_form'])) {
1841 unset($_POST['parameters_form']);
1842 foreach ($_POST as $param => $value) {
1843 $GLOBALS['plugins'][$param] = escape($value);
1844 }
1845 }
1846 else {
1847 $GLOBALS['config']['ENABLED_PLUGINS'] = save_plugin_config($_POST);
1848 }
1849 writeConfig($GLOBALS, isLoggedIn());
1850 }
1851 catch (Exception $e) {
1852 error_log(
1853 'ERROR while saving plugin configuration:.' . PHP_EOL .
1854 $e->getMessage()
1855 );
1856
1857 // TODO: do not handle exceptions/errors in JS.
59edea42 1858 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do='. Router::$PAGE_PLUGINSADMIN .'\';</script>';
dea0ba28
A		 1859 exit;
1860 }
1861 header('Location: ?do='. Router::$PAGE_PLUGINSADMIN);
1862 exit;
1863 }
1864
45034273 1865 // -------- Otherwise, simply display search form and links:
6fc14d53 1866 showLinkList($PAGE, $LINKSDB);
45034273
SS		 1867 exit;
1868}
1869
1870// -----------------------------------------------------------------------------------------------
1871// Process the import file form.
1872function importFile()
1873{
02ad8fb6 1874 if (!isLoggedIn()) { die('Not allowed.'); }
9f15ca9e 1875 $LINKSDB = new LinkDB(
9c8752a2 1876 $GLOBALS['config']['DATASTORE'],
02ad8fb6 1877 isLoggedIn(),
90e5bd65
A		 1878 $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
1879 $GLOBALS['redirector']
9f15ca9e 1880 );
45034273
SS		 1881 $filename=$_FILES['filetoupload']['name'];
1882 $filesize=$_FILES['filetoupload']['size'];
1883 $data=file_get_contents($_FILES['filetoupload']['tmp_name']);
ad6c27b7 1884 $private = (empty($_POST['private']) ? 0 : 1); // Should the links be imported as private?
1885 $overwrite = !empty($_POST['overwrite']) ; // Should the imported links overwrite existing ones?
45034273
SS		 1886 $import_count=0;
1887
1888 // Sniff file type:
1889 $type='unknown';
1890 if (startsWith($data,'<!DOCTYPE NETSCAPE-Bookmark-file-1>')) $type='netscape'; // Netscape bookmark file (aka Firefox).
1891
1892 // Then import the bookmarks.
1893 if ($type=='netscape')
1894 {
1895 // This is a standard Netscape-style bookmark file.
ad6c27b7 1896 // This format is supported by all browsers (except IE, of course), also Delicious, Diigo and others.
45034273
SS		 1897 foreach(explode('<DT>',$data) as $html) // explode is very fast
1898 {
1899 $link = array('linkdate'=>'','title'=>'','url'=>'','description'=>'','tags'=>'','private'=>0);
1900 $d = explode('<DD>',$html);
1901 if (startswith($d[0],'<A '))
1902 {
1903 $link['description'] = (isset($d[1]) ? html_entity_decode(trim($d[1]),ENT_QUOTES,'UTF-8') : ''); // Get description (optional)
1904 preg_match('!<A .*?>(.*?)</A>!i',$d[0],$matches); $link['title'] = (isset($matches[1]) ? trim($matches[1]) : ''); // Get title
1905 $link['title'] = html_entity_decode($link['title'],ENT_QUOTES,'UTF-8');
1906 preg_match_all('! ([A-Z_]+)=\"(.*?)"!i',$html,$matches,PREG_SET_ORDER); // Get all other attributes
1907 $raw_add_date=0;
1908 foreach($matches as $m)
1909 {
1910 $attr=$m[1]; $value=$m[2];
1911 if ($attr=='HREF') $link['url']=html_entity_decode($value,ENT_QUOTES,'UTF-8');
fc93ae1d
AA		 1912 elseif ($attr=='ADD_DATE')
1913 {
1914 $raw_add_date=intval($value);
1915 if ($raw_add_date>30000000000) $raw_add_date/=1000; //If larger than year 2920, then was likely stored in milliseconds instead of seconds
1916 }
45034273
SS		 1917 elseif ($attr=='PRIVATE') $link['private']=($value=='0'?0:1);
1918 elseif ($attr=='TAGS') $link['tags']=html_entity_decode(str_replace(',',' ',$value),ENT_QUOTES,'UTF-8');
1919 }
1920 if ($link['url']!='')
1921 {
1922 if ($private==1) $link['private']=1;
1923 $dblink = $LINKSDB->getLinkFromUrl($link['url']); // See if the link is already in database.
1924 if ($dblink==false)
1925 { // Link not in database, let's import it...
1926 if (empty($raw_add_date)) $raw_add_date=time(); // In case of shitty bookmark file with no ADD_DATE
1927
1928 // Make sure date/time is not already used by another link.
1929 // (Some bookmark files have several different links with the same ADD_DATE)
ad6c27b7 1930 // We increment date by 1 second until we find a date which is not used in DB.
45034273
SS		 1931 // (so that links that have the same date/time are more or less kept grouped by date, but do not conflict.)
1932 while (!empty($LINKSDB[date('Ymd_His',$raw_add_date)])) { $raw_add_date++; }// Yes, I know it's ugly.
1933 $link['linkdate']=date('Ymd_His',$raw_add_date);
1934 $LINKSDB[$link['linkdate']] = $link;
1935 $import_count++;
1936 }
ad6c27b7 1937 else // Link already present in database.
45034273
SS		 1938 {
1939 if ($overwrite)
1940 { // If overwrite is required, we import link data, except date/time.
1941 $link['linkdate']=$dblink['linkdate'];
1942 $LINKSDB[$link['linkdate']] = $link;
1943 $import_count++;
1944 }
1945 }
1946
1947 }
1948 }
1949 }
01e48f26 1950 $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']);
45034273 1951
fe16b01e 1952 echo '<script>alert("File '.json_encode($filename).' ('.$filesize.' bytes) was successfully processed: '.$import_count.' links imported.");document.location=\'?\';</script>';
45034273
SS		 1953 }
1954 else
1955 {
fe16b01e 1956 echo '<script>alert("File '.json_encode($filename).' ('.$filesize.' bytes) has an unknown file format. Nothing was imported.");document.location=\'?\';</script>';
45034273
SS		 1957 }
1958}
1959
1960// -----------------------------------------------------------------------------------------------
1961// Template for the list of links (<div id="linklist">)
1962// This function fills all the necessary fields in the $PAGE for the template 'linklist.html'
1963function buildLinkList($PAGE,$LINKSDB)
1964{
1965 // ---- Filter link database according to parameters
822bffce
A		 1966 $search_type = '';
1967 $search_crits = '';
1968 $privateonly = !empty($_SESSION['privateonly']) ? true : false;
1969
1970 // Fulltext search
1971 if (isset($_GET['searchterm'])) {
1972 $search_crits = escape(trim($_GET['searchterm']));
1973 $search_type = LinkFilter::$FILTER_TEXT;
1974 $linksToDisplay = $LINKSDB->filter($search_type, $search_crits, false, $privateonly);
1975 }
1976 // Search by tag
1977 elseif (isset($_GET['searchtags'])) {
1978 $search_crits = explode(' ', escape(trim($_GET['searchtags'])));
1979 $search_type = LinkFilter::$FILTER_TAG;
1980 $linksToDisplay = $LINKSDB->filter($search_type, $search_crits, false, $privateonly);
1981 }
1982 // Detect smallHashes in URL.
1983 elseif (isset($_SERVER['QUERY_STRING'])
1984 && preg_match('/[a-zA-Z0-9-_@]{6}(&.+?)?/', $_SERVER['QUERY_STRING'])) {
1985 $search_type = LinkFilter::$FILTER_HASH;
1986 $search_crits = substr(trim($_SERVER["QUERY_STRING"], '/'), 0, 6);
1987 $linksToDisplay = $LINKSDB->filter($search_type, $search_crits);
1988
1989 if (count($linksToDisplay) == 0) {
f4c84ad7 1990 $PAGE->render404('The link you are trying to reach does not exist or has been deleted.');
45034273
SS		 1991 exit;
1992 }
45034273 1993 }
822bffce
A		 1994 // Otherwise, display without filtering.
1995 else {
1996 $linksToDisplay = $LINKSDB->filter('', '', false, $privateonly);
45034273
SS		 1997 }
1998
1999 // ---- Handle paging.
822bffce
A		 2000 $keys = array();
2001 foreach ($linksToDisplay as $key => $value) {
2002 $keys[] = $key;
2003 }
45034273
SS		 2004
2005 // If there is only a single link, we change on-the-fly the title of the page.
822bffce
A		 2006 if (count($linksToDisplay) == 1) {
2007 $GLOBALS['pagetitle'] = $linksToDisplay[$keys[0]]['title'].' - '.$GLOBALS['title'];
2008 }
45034273
SS		 2009
2010 // Select articles according to paging.
822bffce
A		 2011 $pagecount = ceil(count($keys) / $_SESSION['LINKS_PER_PAGE']);
2012 $pagecount = $pagecount == 0 ? 1 : $pagecount;
2013 $page= empty($_GET['page']) ? 1 : intval($_GET['page']);
2014 $page = $page < 1 ? 1 : $page;
2015 $page = $page > $pagecount ? $pagecount : $page;
2016 // Start index.
2017 $i = ($page-1) * $_SESSION['LINKS_PER_PAGE'];
2018 $end = $i + $_SESSION['LINKS_PER_PAGE'];
2019 $linkDisp = array();
45034273
SS		 2020 while ($i<$end && $i<count($keys))
2021 {
2022 $link = $linksToDisplay[$keys[$i]];
90e5bd65 2023 $link['description'] = format_description($link['description'], $GLOBALS['redirector']);
822bffce
A		 2024 $classLi = ($i % 2) != 0 ? '' : 'publicLinkHightLight';
2025 $link['class'] = $link['private'] == 0 ? $classLi : 'private';
2026 $link['timestamp'] = linkdate2timestamp($link['linkdate']);
2027 $taglist = explode(' ', $link['tags']);
a5752e77 2028 uasort($taglist, 'strcasecmp');
822bffce 2029 $link['taglist'] = $taglist;
6fc14d53 2030 $link['shorturl'] = smallHash($link['linkdate']);
822bffce
A		 2031 // Check for both signs of a note: starting with ? and 7 chars long.
2032 if ($link['url'][0] === '?' &&
2033 strlen($link['url']) === 7) {
2034 $link['url'] = index_url($_SERVER) . $link['url'];
b47f515a 2035 }
d33c5d4c 2036
45034273
SS		 2037 $linkDisp[$keys[$i]] = $link;
2038 $i++;
2039 }
bb8f712d 2040
45034273 2041 // Compute paging navigation
822bffce
A		 2042 $searchterm = empty($_GET['searchterm']) ? '' : '&searchterm=' . $_GET['searchterm'];
2043 $searchtags = empty($_GET['searchtags']) ? '' : '&searchtags=' . $_GET['searchtags'];
2044 $previous_page_url = '';
2045 if ($i != count($keys)) {
2046 $previous_page_url = '?page=' . ($page+1) . $searchterm . $searchtags;
2047 }
2048 $next_page_url='';
2049 if ($page>1) {
2050 $next_page_url = '?page=' . ($page-1) . $searchterm . $searchtags;
2051 }
45034273 2052
822bffce
A		 2053 $token = '';
2054 if (isLoggedIn()) {
2055 $token = getToken();
2056 }
bb8f712d 2057
45034273 2058 // Fill all template fields.
6fc14d53
A		 2059 $data = array(
2060 'linkcount' => count($LINKSDB),
2061 'previous_page_url' => $previous_page_url,
2062 'next_page_url' => $next_page_url,
2063 'page_current' => $page,
2064 'page_max' => $pagecount,
2065 'result_count' => count($linksToDisplay),
2066 'search_type' => $search_type,
2067 'search_crits' => $search_crits,
2068 'redirector' => empty($GLOBALS['redirector']) ? '' : $GLOBALS['redirector'], // Optional redirector URL.
2069 'token' => $token,
2070 'links' => $linkDisp,
2071 'tags' => $LINKSDB->allTags(),
2072 );
18cca483
A		 2073 // FIXME! temporary fix - see #399.
2074 if (!empty($GLOBALS['pagetitle']) && count($linkDisp) == 1) {
2075 $data['pagetitle'] = $GLOBALS['pagetitle'];
2076 }
6fc14d53
A		 2077
2078 $pluginManager = PluginManager::getInstance();
2079 $pluginManager->executeHooks('render_linklist', $data, array('loggedin' => isLoggedIn()));
2080
2081 foreach ($data as $key => $value) {
2082 $PAGE->assign($key, $value);
2083 }
2084
45034273
SS		 2085 return;
2086}
2087
2088// Compute the thumbnail for a link.
bb8f712d 2089//
ad6c27b7 2090// With a link to the original URL.
45034273 2091// Understands various services (youtube.com...)
ad6c27b7 2092// Input: $url = URL for which the thumbnail must be found.
45034273
SS		 2093// $href = if provided, this URL will be followed instead of $url
2094// Returns an associative array with thumbnail attributes (src,href,width,height,style,alt)
2095// Some of them may be missing.
2096// Return an empty array if no thumbnail available.
2097function computeThumbnail($url,$href=false)
2098{
2099 if (!$GLOBALS['config']['ENABLE_THUMBNAILS']) return array();
2100 if ($href==false) $href=$url;
2101
2102 // For most hosts, the URL of the thumbnail can be easily deduced from the URL of the link.
ad6c27b7 2103 // (e.g. http://www.youtube.com/watch?v=spVypYk4kto ---> http://img.youtube.com/vi/spVypYk4kto/default.jpg )
45034273
SS		 2104 // ^^^^^^^^^^^ ^^^^^^^^^^^
2105 $domain = parse_url($url,PHP_URL_HOST);
2106 if ($domain=='youtube.com' || $domain=='www.youtube.com')
2107 {
2108 parse_str(parse_url($url,PHP_URL_QUERY), $params); // Extract video ID and get thumbnail
1a663a0f 2109 if (!empty($params['v'])) return array('src'=>'https://img.youtube.com/vi/'.$params['v'].'/default.jpg',
45034273
SS		 2110 'href'=>$href,'width'=>'120','height'=>'90','alt'=>'YouTube thumbnail');
2111 }
2112 if ($domain=='youtu.be') // Youtube short links
2113 {
2114 $path = parse_url($url,PHP_URL_PATH);
1a663a0f 2115 return array('src'=>'https://img.youtube.com/vi'.$path.'/default.jpg',
bb8f712d 2116 'href'=>$href,'width'=>'120','height'=>'90','alt'=>'YouTube thumbnail');
45034273
SS		 2117 }
2118 if ($domain=='pix.toile-libre.org') // pix.toile-libre.org image hosting
2119 {
2120 parse_str(parse_url($url,PHP_URL_QUERY), $params); // Extract image filename.
2121 if (!empty($params) && !empty($params['img'])) return array('src'=>'http://pix.toile-libre.org/upload/thumb/'.urlencode($params['img']),
bb8f712d
KT		 2122 'href'=>$href,'style'=>'max-width:120px; max-height:150px','alt'=>'pix.toile-libre.org thumbnail');
2123 }
2124
45034273
SS		 2125 if ($domain=='imgur.com')
2126 {
2127 $path = parse_url($url,PHP_URL_PATH);
2128 if (startsWith($path,'/a/')) return array(); // Thumbnails for albums are not available.
1a663a0f 2129 if (startsWith($path,'/r/')) return array('src'=>'https://i.imgur.com/'.basename($path).'s.jpg',
45034273 2130 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
1a663a0f 2131 if (startsWith($path,'/gallery/')) return array('src'=>'https://i.imgur.com'.substr($path,8).'s.jpg',
45034273
SS		 2132 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
2133
1a663a0f 2134 if (substr_count($path,'/')==1) return array('src'=>'https://i.imgur.com/'.substr($path,1).'s.jpg',
45034273
SS		 2135 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
2136 }
2137 if ($domain=='i.imgur.com')
2138 {
2139 $pi = pathinfo(parse_url($url,PHP_URL_PATH));
1a663a0f 2140 if (!empty($pi['filename'])) return array('src'=>'https://i.imgur.com/'.$pi['filename'].'s.jpg',
45034273
SS		 2141 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
2142 }
2143 if ($domain=='dailymotion.com' || $domain=='www.dailymotion.com')
2144 {
2145 if (strpos($url,'dailymotion.com/video/')!==false)
2146 {
2147 $thumburl=str_replace('dailymotion.com/video/','dailymotion.com/thumbnail/video/',$url);
2148 return array('src'=>$thumburl,
2149 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'DailyMotion thumbnail');
2150 }
2151 }
2152 if (endsWith($domain,'.imageshack.us'))
2153 {
2154 $ext=strtolower(pathinfo($url,PATHINFO_EXTENSION));
2155 if ($ext=='jpg' || $ext=='jpeg' || $ext=='png' || $ext=='gif')
2156 {
2157 $thumburl = substr($url,0,strlen($url)-strlen($ext)).'th.'.$ext;
2158 return array('src'=>$thumburl,
2159 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'imageshack.us thumbnail');
2160 }
2161 }
2162
2163 // Some other hosts are SLOW AS HELL and usually require an extra HTTP request to get the thumbnail URL.
2164 // So we deport the thumbnail generation in order not to slow down page generation
2165 // (and we also cache the thumbnail)
2166
2167 if (!$GLOBALS['config']['ENABLE_LOCALCACHE']) return array(); // If local cache is disabled, no thumbnails for services which require the use a local cache.
2168
2169 if ($domain=='flickr.com' || endsWith($domain,'.flickr.com')
2170 || $domain=='vimeo.com'
2171 || $domain=='ted.com' || endsWith($domain,'.ted.com')
2172 || $domain=='xkcd.com' || endsWith($domain,'.xkcd.com')
2173 )
2174 {
2175 if ($domain=='vimeo.com')
ad6c27b7 2176 { // Make sure this vimeo URL points to a video (/xxx... where xxx is numeric)
45034273
SS		 2177 $path = parse_url($url,PHP_URL_PATH);
2178 if (!preg_match('!/\d+.+?!',$path)) return array(); // This is not a single video URL.
2179 }
2180 if ($domain=='xkcd.com' || endsWith($domain,'.xkcd.com'))
ad6c27b7 2181 { // Make sure this URL points to a single comic (/xxx... where xxx is numeric)
45034273
SS		 2182 $path = parse_url($url,PHP_URL_PATH);
2183 if (!preg_match('!/\d+.+?!',$path)) return array();
2184 }
2185 if ($domain=='ted.com' || endsWith($domain,'.ted.com'))
ad6c27b7 2186 { // Make sure this TED URL points to a video (/talks/...)
45034273
SS		 2187 $path = parse_url($url,PHP_URL_PATH);
2188 if ("/talks/" !== substr($path,0,7)) return array(); // This is not a single video URL.
2189 }
2190 $sign = hash_hmac('sha256', $url, $GLOBALS['salt']); // We use the salt to sign data (it's random, secret, and specific to each installation)
482d67bd 2191 return array('src'=>index_url($_SERVER).'?do=genthumbnail&hmac='.$sign.'&url='.urlencode($url),
45034273
SS		 2192 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'thumbnail');
2193 }
2194
2195 // For all other, we try to make a thumbnail of links ending with .jpg/jpeg/png/gif
2196 // Technically speaking, we should download ALL links and check their Content-Type to see if they are images.
2197 // But using the extension will do.
2198 $ext=strtolower(pathinfo($url,PATHINFO_EXTENSION));
2199 if ($ext=='jpg' || $ext=='jpeg' || $ext=='png' || $ext=='gif')
2200 {
2201 $sign = hash_hmac('sha256', $url, $GLOBALS['salt']); // We use the salt to sign data (it's random, secret, and specific to each installation)
482d67bd 2202 return array('src'=>index_url($_SERVER).'?do=genthumbnail&hmac='.$sign.'&url='.urlencode($url),
bb8f712d 2203 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'thumbnail');
45034273
SS		 2204 }
2205 return array(); // No thumbnail.
2206
2207}
2208
2209
2210// Returns the HTML code to display a thumbnail for a link
2211// with a link to the original URL.
2212// Understands various services (youtube.com...)
ad6c27b7 2213// Input: $url = URL for which the thumbnail must be found.
45034273
SS		 2214// $href = if provided, this URL will be followed instead of $url
2215// Returns '' if no thumbnail available.
2216function thumbnail($url,$href=false)
2217{
2218 $t = computeThumbnail($url,$href);
2219 if (count($t)==0) return ''; // Empty array = no thumbnail for this URL.
bb8f712d 2220
5f85fcd8
A		 2221 $html='<a href="'.escape($t['href']).'"><img src="'.escape($t['src']).'"';
2222 if (!empty($t['width'])) $html.=' width="'.escape($t['width']).'"';
2223 if (!empty($t['height'])) $html.=' height="'.escape($t['height']).'"';
2224 if (!empty($t['style'])) $html.=' style="'.escape($t['style']).'"';
2225 if (!empty($t['alt'])) $html.=' alt="'.escape($t['alt']).'"';
45034273
SS		 2226 $html.='></a>';
2227 return $html;
2228}
2229
45034273
SS		 2230// Returns the HTML code to display a thumbnail for a link
2231// for the picture wall (using lazy image loading)
2232// Understands various services (youtube.com...)
ad6c27b7 2233// Input: $url = URL for which the thumbnail must be found.
45034273
SS		 2234// $href = if provided, this URL will be followed instead of $url
2235// Returns '' if no thumbnail available.
2236function lazyThumbnail($url,$href=false)
2237{
bb8f712d 2238 $t = computeThumbnail($url,$href);
45034273
SS		 2239 if (count($t)==0) return ''; // Empty array = no thumbnail for this URL.
2240
5f85fcd8 2241 $html='<a href="'.escape($t['href']).'">';
bb8f712d 2242
34047d23 2243 // Lazy image
5f85fcd8 2244 $html.='<img class="b-lazy" src="#" data-src="'.escape($t['src']).'"';
858c5c2b 2245
5f85fcd8
A		 2246 if (!empty($t['width'])) $html.=' width="'.escape($t['width']).'"';
2247 if (!empty($t['height'])) $html.=' height="'.escape($t['height']).'"';
2248 if (!empty($t['style'])) $html.=' style="'.escape($t['style']).'"';
2249 if (!empty($t['alt'])) $html.=' alt="'.escape($t['alt']).'"';
45034273 2250 $html.='>';
bb8f712d 2251
ad6c27b7 2252 // No-JavaScript fallback.
5f85fcd8
A		 2253 $html.='<noscript><img src="'.escape($t['src']).'"';
2254 if (!empty($t['width'])) $html.=' width="'.escape($t['width']).'"';
2255 if (!empty($t['height'])) $html.=' height="'.escape($t['height']).'"';
2256 if (!empty($t['style'])) $html.=' style="'.escape($t['style']).'"';
2257 if (!empty($t['alt'])) $html.=' alt="'.escape($t['alt']).'"';
45034273 2258 $html.='></noscript></a>';
bb8f712d 2259
45034273
SS		 2260 return $html;
2261}
2262
2263
2264// -----------------------------------------------------------------------------------------------
2265// Installation
2266// This function should NEVER be called if the file data/config.php exists.
2267function install()
2268{
2269 // On free.fr host, make sure the /sessions directory exists, otherwise login will not work.
f6a6ca0a 2270 if (endsWith($_SERVER['HTTP_HOST'],'.free.fr') && !is_dir($_SERVER['DOCUMENT_ROOT'].'/sessions')) mkdir($_SERVER['DOCUMENT_ROOT'].'/sessions',0705);
45034273 2271
f37664a2
SS		 2272
2273 // This part makes sure sessions works correctly.
2274 // (Because on some hosts, session.save_path may not be set correctly,
2275 // or we may not have write access to it.)
2276 if (isset($_GET['test_session']) && ( !isset($_SESSION) || !isset($_SESSION['session_tested']) || $_SESSION['session_tested']!='Working'))
2277 { // Step 2: Check if data in session is correct.
2278 echo '<pre>Sessions do not seem to work correctly on your server.<br>';
2279 echo 'Make sure the variable session.save_path is set correctly in your php config, and that you have write access to it.<br>';
01ec1791 2280 echo 'It currently points to '.session_save_path().'<br>';
2281 echo 'Check that the hostname used to access Shaarli contains a dot. On some browsers, accessing your server via a hostname like \'localhost\' or any custom hostname without a dot causes cookie storage to fail. We recommend accessing your server via it\'s IP address or Fully Qualified Domain Name.<br>';
2282 echo '<br><a href="?">Click to try again.</a></pre>';
f37664a2
SS		 2283 die;
2284 }
2285 if (!isset($_SESSION['session_tested']))
2286 { // Step 1 : Try to store data in session and reload page.
2287 $_SESSION['session_tested'] = 'Working'; // Try to set a variable in session.
482d67bd 2288 header('Location: '.index_url($_SERVER).'?test_session'); // Redirect to check stored data.
f37664a2
SS		 2289 }
2290 if (isset($_GET['test_session']))
ad6c27b7 2291 { // Step 3: Sessions are OK. Remove test parameter from URL.
482d67bd 2292 header('Location: '.index_url($_SERVER));
f37664a2
SS		 2293 }
2294
2295
45034273
SS		 2296 if (!empty($_POST['setlogin']) && !empty($_POST['setpassword']))
2297 {
2298 $tz = 'UTC';
d1e2f8e5
V		 2299 if (!empty($_POST['continent']) && !empty($_POST['city'])) {
2300 if (isTimeZoneValid($_POST['continent'], $_POST['city'])) {
45034273 2301 $tz = $_POST['continent'].'/'.$_POST['city'];
d1e2f8e5
V		 2302 }
2303 }
45034273
SS		 2304 $GLOBALS['timezone'] = $tz;
2305 // Everything is ok, let's create config file.
2306 $GLOBALS['login'] = $_POST['setlogin'];
2307 $GLOBALS['salt'] = sha1(uniqid('',true).'_'.mt_rand()); // Salt renders rainbow-tables attacks useless.
2308 $GLOBALS['hash'] = sha1($_POST['setpassword'].$GLOBALS['login'].$GLOBALS['salt']);
482d67bd 2309 $GLOBALS['title'] = (empty($_POST['title']) ? 'Shared links on '.escape(index_url($_SERVER)) : $_POST['title'] );
329e0768 2310 $GLOBALS['config']['ENABLE_UPDATECHECK'] = !empty($_POST['updateCheck']);
dd484b90
A		 2311 try {
2312 writeConfig($GLOBALS, isLoggedIn());
2313 }
2314 catch(Exception $e) {
2315 error_log(
2316 'ERROR while writing config file after installation.' . PHP_EOL .
2317 $e->getMessage()
2318 );
2319
2320 // TODO: do not handle exceptions/errors in JS.
2321 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?\';</script>';
2322 exit;
2323 }
fe16b01e 2324 echo '<script>alert("Shaarli is now configured. Please enter your login/password and start shaaring your links!");document.location=\'?do=login\';</script>';
45034273
SS		 2325 exit;
2326 }
2327
2328 // Display config form:
d1e2f8e5
V		 2329 list($timezone_form, $timezone_js) = generateTimeZoneForm();
2330 $timezone_html = '';
2331 if ($timezone_form != '') {
2332 $timezone_html = '<tr><td><b>Timezone:</b></td><td>'.$timezone_form.'</td></tr>';
2333 }
bb8f712d 2334
45034273
SS		 2335 $PAGE = new pageBuilder;
2336 $PAGE->assign('timezone_html',$timezone_html);
2337 $PAGE->assign('timezone_js',$timezone_js);
2338 $PAGE->renderPage('install');
2339 exit;
2340}
2341
ad6c27b7 2342/* Because some f*cking services like flickr require an extra HTTP request to get the thumbnail URL,
45034273 2343 I have deported the thumbnail URL code generation here, otherwise this would slow down page generation.
ad6c27b7 2344 The following function takes the URL a link (e.g. a flickr page) and return the proper thumbnail.
2345 This function is called by passing the URL:
45034273 2346 http://mywebsite.com/shaarli/?do=genthumbnail&hmac=[HMAC]&url=[URL]
ad6c27b7 2347 [URL] is the URL of the link (e.g. a flickr page)
45034273
SS		 2348 [HMAC] is the signature for the [URL] (so that these URL cannot be forged).
2349 The function below will fetch the image from the webservice and store it in the cache.
2350*/
2351function genThumbnail()
2352{
2353 // Make sure the parameters in the URL were generated by us.
2354 $sign = hash_hmac('sha256', $_GET['url'], $GLOBALS['salt']);
ad6c27b7 2355 if ($sign!=$_GET['hmac']) die('Naughty boy!');
45034273
SS		 2356
2357 // Let's see if we don't already have the image for this URL in the cache.
2358 $thumbname=hash('sha1',$_GET['url']).'.jpg';
2359 if (is_file($GLOBALS['config']['CACHEDIR'].'/'.$thumbname))
2360 { // We have the thumbnail, just serve it:
2361 header('Content-Type: image/jpeg');
2362 echo file_get_contents($GLOBALS['config']['CACHEDIR'].'/'.$thumbname);
2363 return;
2364 }
2365 // We may also serve a blank image (if service did not respond)
2366 $blankname=hash('sha1',$_GET['url']).'.gif';
2367 if (is_file($GLOBALS['config']['CACHEDIR'].'/'.$blankname))
2368 {
2369 header('Content-Type: image/gif');
2370 echo file_get_contents($GLOBALS['config']['CACHEDIR'].'/'.$blankname);
2371 return;
2372 }
2373
2374 // Otherwise, generate the thumbnail.
2375 $url = $_GET['url'];
2376 $domain = parse_url($url,PHP_URL_HOST);
2377
2378 if ($domain=='flickr.com' || endsWith($domain,'.flickr.com'))
2379 {
ad6c27b7 2380 // Crude replacement to handle new flickr domain policy (They prefer www. now)
45034273
SS		 2381 $url = str_replace('http://flickr.com/','http://www.flickr.com/',$url);
2382
2383 // Is this a link to an image, or to a flickr page ?
2384 $imageurl='';
2385 if (endswith(parse_url($url,PHP_URL_PATH),'.jpg'))
ad6c27b7 2386 { // This is a direct link to an image. e.g. http://farm1.staticflickr.com/5/5921913_ac83ed27bd_o.jpg
45034273
SS		 2387 preg_match('!(http://farm\d+\.staticflickr\.com/\d+/\d+_\w+_)\w.jpg!',$url,$matches);
2388 if (!empty($matches[1])) $imageurl=$matches[1].'m.jpg';
2389 }
ad6c27b7 2390 else // This is a flickr page (html)
45034273 2391 {
451314eb 2392 // Get the flickr html page.
1557cefb 2393 list($headers, $content) = get_http_response($url, 20);
451314eb 2394 if (strpos($headers[0], '200 OK') !== false)
45034273 2395 {
ad6c27b7 2396 // flickr now nicely provides the URL of the thumbnail in each flickr page.
1557cefb 2397 preg_match('!<link rel=\"image_src\" href=\"(.+?)\"!', $content, $matches);
45034273
SS		 2398 if (!empty($matches[1])) $imageurl=$matches[1];
2399
2400 // In albums (and some other pages), the link rel="image_src" is not provided,
2401 // but flickr provides:
2402 // <meta property="og:image" content="http://farm4.staticflickr.com/3398/3239339068_25d13535ff_z.jpg" />
2403 if ($imageurl=='')
2404 {
1557cefb 2405 preg_match('!<meta property=\"og:image\" content=\"(.+?)\"!', $content, $matches);
45034273
SS		 2406 if (!empty($matches[1])) $imageurl=$matches[1];
2407 }
2408 }
2409 }
2410
2411 if ($imageurl!='')
2412 { // Let's download the image.
451314eb 2413 // Image is 240x120, so 10 seconds to download should be enough.
1557cefb 2414 list($headers, $content) = get_http_response($imageurl, 10);
451314eb 2415 if (strpos($headers[0], '200 OK') !== false) {
1557cefb
A		 2416 // Save image to cache.
2417 file_put_contents($GLOBALS['config']['CACHEDIR'].'/' . $thumbname, $content);
45034273 2418 header('Content-Type: image/jpeg');
1557cefb 2419 echo $content;
45034273
SS		 2420 return;
2421 }
2422 }
2423 }
2424
2425 elseif ($domain=='vimeo.com' )
2426 {
2427 // This is more complex: we have to perform a HTTP request, then parse the result.
ad6c27b7 2428 // Maybe we should deport this to JavaScript ? Example: http://stackoverflow.com/questions/1361149/get-img-thumbnails-from-vimeo/4285098#4285098
45034273 2429 $vid = substr(parse_url($url,PHP_URL_PATH),1);
1557cefb 2430 list($headers, $content) = get_http_response('https://vimeo.com/api/v2/video/'.escape($vid).'.php', 5);
451314eb 2431 if (strpos($headers[0], '200 OK') !== false) {
1557cefb 2432 $t = unserialize($content);
45034273
SS		 2433 $imageurl = $t[0]['thumbnail_medium'];
2434 // Then we download the image and serve it to our client.
1557cefb 2435 list($headers, $content) = get_http_response($imageurl, 10);
451314eb 2436 if (strpos($headers[0], '200 OK') !== false) {
1557cefb
A		 2437 // Save image to cache.
2438 file_put_contents($GLOBALS['config']['CACHEDIR'] . '/' . $thumbname, $content);
45034273 2439 header('Content-Type: image/jpeg');
1557cefb 2440 echo $content;
45034273
SS		 2441 return;
2442 }
2443 }
2444 }
2445
2446 elseif ($domain=='ted.com' || endsWith($domain,'.ted.com'))
2447 {
2448 // The thumbnail for TED talks is located in the <link rel="image_src" [...]> tag on that page
2449 // http://www.ted.com/talks/mikko_hypponen_fighting_viruses_defending_the_net.html
2450 // <link rel="image_src" href="http://images.ted.com/images/ted/28bced335898ba54d4441809c5b1112ffaf36781_389x292.jpg" />
1557cefb 2451 list($headers, $content) = get_http_response($url, 5);
451314eb 2452 if (strpos($headers[0], '200 OK') !== false) {
45034273 2453 // Extract the link to the thumbnail
1557cefb 2454 preg_match('!link rel="image_src" href="(http://images.ted.com/images/ted/.+_\d+x\d+\.jpg)"!', $content, $matches);
45034273
SS		 2455 if (!empty($matches[1]))
2456 { // Let's download the image.
2457 $imageurl=$matches[1];
451314eb 2458 // No control on image size, so wait long enough
1557cefb 2459 list($headers, $content) = get_http_response($imageurl, 20);
451314eb 2460 if (strpos($headers[0], '200 OK') !== false) {
45034273 2461 $filepath=$GLOBALS['config']['CACHEDIR'].'/'.$thumbname;
1557cefb 2462 file_put_contents($filepath, $content); // Save image to cache.
45034273
SS		 2463 if (resizeImage($filepath))
2464 {
2465 header('Content-Type: image/jpeg');
2466 echo file_get_contents($filepath);
2467 return;
2468 }
2469 }
2470 }
2471 }
2472 }
bb8f712d 2473
45034273
SS		 2474 elseif ($domain=='xkcd.com' || endsWith($domain,'.xkcd.com'))
2475 {
2476 // There is no thumbnail available for xkcd comics, so download the whole image and resize it.
2477 // http://xkcd.com/327/
2478 // <img src="http://imgs.xkcd.com/comics/exploits_of_a_mom.png" title="<BLABLA>" alt="<BLABLA>" />
1557cefb 2479 list($headers, $content) = get_http_response($url, 5);
451314eb 2480 if (strpos($headers[0], '200 OK') !== false) {
45034273 2481 // Extract the link to the thumbnail
1557cefb 2482 preg_match('!<img src="(http://imgs.xkcd.com/comics/.*)" title="[^s]!', $content, $matches);
45034273
SS		 2483 if (!empty($matches[1]))
2484 { // Let's download the image.
2485 $imageurl=$matches[1];
451314eb 2486 // No control on image size, so wait long enough
1557cefb 2487 list($headers, $content) = get_http_response($imageurl, 20);
451314eb 2488 if (strpos($headers[0], '200 OK') !== false) {
45034273 2489 $filepath=$GLOBALS['config']['CACHEDIR'].'/'.$thumbname;
1557cefb
A		 2490 // Save image to cache.
2491 file_put_contents($filepath, $content);
45034273
SS		 2492 if (resizeImage($filepath))
2493 {
2494 header('Content-Type: image/jpeg');
2495 echo file_get_contents($filepath);
2496 return;
2497 }
2498 }
2499 }
2500 }
bb8f712d 2501 }
45034273
SS		 2502
2503 else
2504 {
2505 // For all other domains, we try to download the image and make a thumbnail.
451314eb 2506 // We allow 30 seconds max to download (and downloads are limited to 4 Mb)
1557cefb 2507 list($headers, $content) = get_http_response($url, 30);
451314eb 2508 if (strpos($headers[0], '200 OK') !== false) {
45034273 2509 $filepath=$GLOBALS['config']['CACHEDIR'].'/'.$thumbname;
1557cefb
A		 2510 // Save image to cache.
2511 file_put_contents($filepath, $content);
45034273
SS		 2512 if (resizeImage($filepath))
2513 {
2514 header('Content-Type: image/jpeg');
2515 echo file_get_contents($filepath);
2516 return;
2517 }
2518 }
2519 }
2520
2521
2522 // Otherwise, return an empty image (8x8 transparent gif)
2523 $blankgif = base64_decode('R0lGODlhCAAIAIAAAP///////yH5BAEKAAEALAAAAAAIAAgAAAIHjI+py+1dAAA7');
2524 file_put_contents($GLOBALS['config']['CACHEDIR'].'/'.$blankname,$blankgif); // Also put something in cache so that this URL is not requested twice.
2525 header('Content-Type: image/gif');
2526 echo $blankgif;
2527}
2528
2529// Make a thumbnail of the image (to width: 120 pixels)
2530// Returns true if success, false otherwise.
2531function resizeImage($filepath)
2532{
2533 if (!function_exists('imagecreatefromjpeg')) return false; // GD not present: no thumbnail possible.
2534
2535 // Trick: some stupid people rename GIF as JPEG... or else.
2536 // So we really try to open each image type whatever the extension is.
2537 $header=file_get_contents($filepath,false,NULL,0,256); // Read first 256 bytes and try to sniff file type.
2538 $im=false;
2539 $i=strpos($header,'GIF8'); if (($i!==false) && ($i==0)) $im = imagecreatefromgif($filepath); // Well this is crude, but it should be enough.
2540 $i=strpos($header,'PNG'); if (($i!==false) && ($i==1)) $im = imagecreatefrompng($filepath);
2541 $i=strpos($header,'JFIF'); if ($i!==false) $im = imagecreatefromjpeg($filepath);
2542 if (!$im) return false; // Unable to open image (corrupted or not an image)
2543 $w = imagesx($im);
2544 $h = imagesy($im);
2545 $ystart = 0; $yheight=$h;
2546 if ($h>$w) { $ystart= ($h/2)-($w/2); $yheight=$w/2; }
2547 $nw = 120; // Desired width
2548 $nh = min(floor(($h*$nw)/$w),120); // Compute new width/height, but maximum 120 pixels height.
2549 // Resize image:
2550 $im2 = imagecreatetruecolor($nw,$nh);
2551 imagecopyresampled($im2, $im, 0, 0, 0, $ystart, $nw, $nh, $w, $yheight);
2552 imageinterlace($im2,true); // For progressive JPEG.
2553 $tempname=$filepath.'_TEMP.jpg';
2554 imagejpeg($im2, $tempname, 90);
2555 imagedestroy($im);
2556 imagedestroy($im2);
9e820906 2557 unlink($filepath);
45034273
SS		 2558 rename($tempname,$filepath); // Overwrite original picture with thumbnail.
2559 return true;
2560}
2561
45034273
SS		 2562if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=genthumbnail')) { genThumbnail(); exit; } // Thumbnail generation/cache does not need the link database.
2563if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=rss')) { showRSS(); exit; }
2564if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=atom')) { showATOM(); exit; }
2565if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=dailyrss')) { showDailyRSS(); exit; }
45034273
SS		 2566if (!isset($_SESSION['LINKS_PER_PAGE'])) $_SESSION['LINKS_PER_PAGE']=$GLOBALS['config']['LINKS_PER_PAGE'];
2567renderPage();
03545ef6 2568?>
The personal, minimalist, super-fast, database free, bookmarking service - community repo