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Remove dev cache disabling
[github/shaarli/Shaarli.git] / index.php
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45034273 1<?php
49e2b35b 2/**
797a6f30 3 * Shaarli v0.6.5 - 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 */
797a6f30 128define('shaarli_version', '0.6.5');
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';
82e36802 157require_once 'application/FeedBuilder.php';
2e28269b 158require_once 'application/FileUtils.php';
451314eb 159require_once 'application/HttpUtils.php';
ca74886f 160require_once 'application/LinkDB.php';
822bffce 161require_once 'application/LinkFilter.php';
1557cefb 162require_once 'application/LinkUtils.php';
d1e2f8e5 163require_once 'application/TimeZone.php';
d9d776af 164require_once 'application/Url.php';
ca74886f 165require_once 'application/Utils.php';
dd484b90 166require_once 'application/Config.php';
6fc14d53
A		 167require_once 'application/PluginManager.php';
168require_once 'application/Router.php';
510377d2 169require_once 'application/Updater.php';
ca74886f 170
d1e2f8e5
V		 171// Ensure the PHP version is supported
172try {
c9cf2715 173 ApplicationUtils::checkPHPVersion('5.3', PHP_VERSION);
2e28269b 174} catch(Exception $exc) {
d1e2f8e5 175 header('Content-Type: text/plain; charset=utf-8');
2e28269b 176 echo $exc->getMessage();
d1e2f8e5
V		 177 exit;
178}
179
06b6660a
A		 180// Force cookie path (but do not change lifetime)
181$cookie = session_get_cookie_params();
182$cookiedir = '';
183if (dirname($_SERVER['SCRIPT_NAME']) != '/') {
184 $cookiedir = dirname($_SERVER["SCRIPT_NAME"]).'/';
185}
186// Set default cookie expiration and path.
187session_set_cookie_params($cookie['lifetime'], $cookiedir, $_SERVER['SERVER_NAME']);
188// Set session parameters on server side.
189// If the user does not access any page within this time, his/her session is considered expired.
190define('INACTIVITY_TIMEOUT', 3600); // in seconds.
191// Use cookies to store session.
192ini_set('session.use_cookies', 1);
193// Force cookies for session (phpsessionID forbidden in URL).
194ini_set('session.use_only_cookies', 1);
195// Prevent PHP form using sessionID in URL if cookies are disabled.
196ini_set('session.use_trans_sid', false);
197
06b6660a
A		 198session_name('shaarli');
199// Start session if needed (Some server auto-start sessions).
200if (session_id() == '') {
201 session_start();
202}
203
68bc2135
V		 204// Regenerate session ID if invalid or not defined in cookie.
205if (isset($_COOKIE['shaarli']) && !is_session_id_valid($_COOKIE['shaarli'])) {
206 session_regenerate_id(true);
207 $_COOKIE['shaarli'] = session_id();
208}
209
45034273 210include "inc/rain.tpl.class.php"; //include Rain TPL
25f5c59d 211raintpl::$tpl_dir = $GLOBALS['config']['RAINTPL_TPL']; // template directory
25f5c59d 212raintpl::$cache_dir = $GLOBALS['config']['RAINTPL_TMP']; // cache directory
45034273 213
6fc14d53
A		 214$pluginManager = PluginManager::getInstance();
215$pluginManager->load($GLOBALS['config']['ENABLED_PLUGINS']);
216
45034273
SS		 217ob_start(); // Output buffering for the page cache.
218
219
220// In case stupid admin has left magic_quotes enabled in php.ini:
221if (get_magic_quotes_gpc())
222{
223 function stripslashes_deep($value) { $value = is_array($value) ? array_map('stripslashes_deep', $value) : stripslashes($value); return $value; }
224 $_POST = array_map('stripslashes_deep', $_POST);
225 $_GET = array_map('stripslashes_deep', $_GET);
226 $_COOKIE = array_map('stripslashes_deep', $_COOKIE);
227}
228
229// Prevent caching on client side or proxy: (yes, it's ugly)
230header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
231header("Cache-Control: no-store, no-cache, must-revalidate");
232header("Cache-Control: post-check=0, pre-check=0", false);
233header("Pragma: no-cache");
234
45034273 235// Handling of old config file which do not have the new parameters.
482d67bd 236if (empty($GLOBALS['title'])) $GLOBALS['title']='Shared links on '.escape(index_url($_SERVER));
45034273 237if (empty($GLOBALS['timezone'])) $GLOBALS['timezone']=date_default_timezone_get();
8a80e4fe 238if (empty($GLOBALS['redirector'])) $GLOBALS['redirector']='';
45034273 239if (empty($GLOBALS['disablesessionprotection'])) $GLOBALS['disablesessionprotection']=false;
bb8f712d 240if (empty($GLOBALS['privateLinkByDefault'])) $GLOBALS['privateLinkByDefault']=false;
ebb2880d 241if (empty($GLOBALS['titleLink'])) $GLOBALS['titleLink']='?';
858c5c2b 242// I really need to rewrite Shaarli with a proper configuation manager.
45034273 243
50c9a12e 244if (! is_file($GLOBALS['config']['CONFIG_FILE'])) {
2e28269b
V		 245 // Ensure Shaarli has proper access to its resources
246 $errors = ApplicationUtils::checkResourcePermissions($GLOBALS['config']);
247
248 if ($errors != array()) {
249 $message = '<p>Insufficient permissions:</p><ul>';
250
251 foreach ($errors as $error) {
252 $message .= '<li>'.$error.'</li>';
253 }
254 $message .= '</ul>';
255
256 header('Content-Type: text/html; charset=utf-8');
257 echo $message;
258 exit;
259 }
260
261 // Display the installation form if no existing config is found
50c9a12e
V		 262 install();
263}
8a80e4fe 264
5f85fcd8
A		 265$GLOBALS['title'] = !empty($GLOBALS['title']) ? escape($GLOBALS['title']) : '';
266$GLOBALS['titleLink'] = !empty($GLOBALS['titleLink']) ? escape($GLOBALS['titleLink']) : '';
267$GLOBALS['redirector'] = !empty($GLOBALS['redirector']) ? escape($GLOBALS['redirector']) : '';
8a80e4fe 268
ae00595b
CH		 269// a token depending of deployment salt, user password, and the current ip
270define('STAY_SIGNED_IN_TOKEN', sha1($GLOBALS['hash'].$_SERVER["REMOTE_ADDR"].$GLOBALS['salt']));
8a80e4fe 271
408def1a
A		 272// Sniff browser language and set date format accordingly.
273if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
274 autoLocale($_SERVER['HTTP_ACCEPT_LANGUAGE']);
275}
45034273
SS		 276header('Content-Type: text/html; charset=utf-8'); // We use UTF-8 for proper international characters handling.
277
ff69d87e
FE		 278//==================================================================================================
279// Checking session state (i.e. is the user still logged in)
280//==================================================================================================
281
282function setup_login_state() {
ff69d87e 283 if ($GLOBALS['config']['OPEN_SHAARLI']) {
02ad8fb6 284 return true;
ff69d87e 285 }
02ad8fb6
JP		 286 $userIsLoggedIn = false; // By default, we do not consider the user as logged in;
287 $loginFailure = false; // If set to true, every attempt to authenticate the user will fail. This indicates that an important condition isn't met.
ff69d87e
FE		 288 if (!isset($GLOBALS['login'])) {
289 $userIsLoggedIn = false; // Shaarli is not configured yet.
290 $loginFailure = true;
291 }
292 if (isset($_COOKIE['shaarli_staySignedIn']) &&
293 $_COOKIE['shaarli_staySignedIn']===STAY_SIGNED_IN_TOKEN &&
294 !$loginFailure)
295 {
296 fillSessionInfo();
297 $userIsLoggedIn = true;
298 }
299 // If session does not exist on server side, or IP address has changed, or session has expired, logout.
300 if (empty($_SESSION['uid']) ||
301 ($GLOBALS['disablesessionprotection']==false && $_SESSION['ip']!=allIPs()) ||
302 time() >= $_SESSION['expires_on'])
303 {
304 logout();
305 $userIsLoggedIn = false;
306 $loginFailure = true;
307 }
308 if (!empty($_SESSION['longlastingsession'])) {
309 $_SESSION['expires_on']=time()+$_SESSION['longlastingsession']; // In case of "Stay signed in" checked.
310 }
311 else {
312 $_SESSION['expires_on']=time()+INACTIVITY_TIMEOUT; // Standard session expiration date.
313 }
314 if (!$loginFailure) {
315 $userIsLoggedIn = true;
316 }
317
318 return $userIsLoggedIn;
319}
ff69d87e 320$userIsLoggedIn = setup_login_state();
45034273 321
45034273
SS		 322// ------------------------------------------------------------------------------------------
323// PubSubHubbub protocol support (if enabled) [UNTESTED]
324// (Source: http://aldarone.fr/les-flux-rss-shaarli-et-pubsubhubbub/ )
325if (!empty($GLOBALS['config']['PUBSUBHUB_URL'])) include './publisher.php';
326function pubsubhub()
327{
328 if (!empty($GLOBALS['config']['PUBSUBHUB_URL']))
329 {
330 $p = new Publisher($GLOBALS['config']['PUBSUBHUB_URL']);
331 $topic_url = array (
482d67bd
V		 332 index_url($_SERVER).'?do=atom',
333 index_url($_SERVER).'?do=rss'
45034273
SS		 334 );
335 $p->publish_update($topic_url);
336 }
337}
338
339// ------------------------------------------------------------------------------------------
340// Session management
45034273
SS		 341
342// Returns the IP address of the client (Used to prevent session cookie hijacking.)
343function allIPs()
344{
345 $ip = $_SERVER["REMOTE_ADDR"];
346 // Then we use more HTTP headers to prevent session hijacking from users behind the same proxy.
347 if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) { $ip=$ip.'_'.$_SERVER['HTTP_X_FORWARDED_FOR']; }
348 if (isset($_SERVER['HTTP_CLIENT_IP'])) { $ip=$ip.'_'.$_SERVER['HTTP_CLIENT_IP']; }
349 return $ip;
350}
351
ae00595b 352function fillSessionInfo() {
ad6c27b7 353 $_SESSION['uid'] = sha1(uniqid('',true).'_'.mt_rand()); // Generate unique random number (different than phpsessionid)
ae00595b
CH		 354 $_SESSION['ip']=allIPs(); // We store IP address(es) of the client to make sure session is not hijacked.
355 $_SESSION['username']=$GLOBALS['login'];
356 $_SESSION['expires_on']=time()+INACTIVITY_TIMEOUT; // Set session expiration.
357}
358
45034273
SS		 359// Check that user/password is correct.
360function check_auth($login,$password)
361{
362 $hash = sha1($password.$login.$GLOBALS['salt']);
363 if ($login==$GLOBALS['login'] && $hash==$GLOBALS['hash'])
364 { // Login/password is correct.
ae00595b 365 fillSessionInfo();
1abe6555 366 logm($GLOBALS['config']['LOG_FILE'], $_SERVER['REMOTE_ADDR'], 'Login successful');
45034273
SS		 367 return True;
368 }
1abe6555 369 logm($GLOBALS['config']['LOG_FILE'], $_SERVER['REMOTE_ADDR'], 'Login failed for user '.$login);
45034273
SS		 370 return False;
371}
372
373// Returns true if the user is logged in.
374function isLoggedIn()
375{
ff69d87e
FE		 376 global $userIsLoggedIn;
377 return $userIsLoggedIn;
45034273
SS		 378}
379
380// Force logout.
ff69d87e
FE		 381function logout() {
382 if (isset($_SESSION)) {
383 unset($_SESSION['uid']);
384 unset($_SESSION['ip']);
385 unset($_SESSION['username']);
386 unset($_SESSION['privateonly']);
387 }
388 setcookie('shaarli_staySignedIn', FALSE, 0, WEB_PATH);
ae00595b 389}
45034273
SS		 390
391
392// ------------------------------------------------------------------------------------------
393// Brute force protection system
394// Several consecutive failed logins will ban the IP address for 30 minutes.
395if (!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?>");
396include $GLOBALS['config']['IPBANS_FILENAME'];
397// Signal a failed login. Will ban the IP if too many failures:
398function ban_loginFailed()
399{
400 $ip=$_SERVER["REMOTE_ADDR"]; $gb=$GLOBALS['IPBANS'];
401 if (!isset($gb['FAILURES'][$ip])) $gb['FAILURES'][$ip]=0;
402 $gb['FAILURES'][$ip]++;
403 if ($gb['FAILURES'][$ip]>($GLOBALS['config']['BAN_AFTER']-1))
404 {
405 $gb['BANS'][$ip]=time()+$GLOBALS['config']['BAN_DURATION'];
1abe6555 406 logm($GLOBALS['config']['LOG_FILE'], $_SERVER['REMOTE_ADDR'], 'IP address banned from login');
45034273
SS		 407 }
408 $GLOBALS['IPBANS'] = $gb;
409 file_put_contents($GLOBALS['config']['IPBANS_FILENAME'], "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>");
410}
411
412// Signals a successful login. Resets failed login counter.
413function ban_loginOk()
414{
415 $ip=$_SERVER["REMOTE_ADDR"]; $gb=$GLOBALS['IPBANS'];
416 unset($gb['FAILURES'][$ip]); unset($gb['BANS'][$ip]);
417 $GLOBALS['IPBANS'] = $gb;
418 file_put_contents($GLOBALS['config']['IPBANS_FILENAME'], "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>");
419}
420
421// Checks if the user CAN login. If 'true', the user can try to login.
422function ban_canLogin()
423{
424 $ip=$_SERVER["REMOTE_ADDR"]; $gb=$GLOBALS['IPBANS'];
425 if (isset($gb['BANS'][$ip]))
426 {
427 // User is banned. Check if the ban has expired:
428 if ($gb['BANS'][$ip]<=time())
429 { // Ban expired, user can try to login again.
1abe6555 430 logm($GLOBALS['config']['LOG_FILE'], $_SERVER['REMOTE_ADDR'], 'Ban lifted.');
45034273
SS		 431 unset($gb['FAILURES'][$ip]); unset($gb['BANS'][$ip]);
432 file_put_contents($GLOBALS['config']['IPBANS_FILENAME'], "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>");
433 return true; // Ban has expired, user can login.
434 }
435 return false; // User is banned.
436 }
437 return true; // User is not banned.
438}
439
440// ------------------------------------------------------------------------------------------
441// Process login form: Check if login/password is correct.
442if (isset($_POST['login']))
443{
444 if (!ban_canLogin()) die('I said: NO. You are banned for the moment. Go away.');
445 if (isset($_POST['password']) && tokenOk($_POST['token']) && (check_auth($_POST['login'], $_POST['password'])))
ad6c27b7 446 { // Login/password is OK.
45034273
SS		 447 ban_loginOk();
448 // If user wants to keep the session cookie even after the browser closes:
449 if (!empty($_POST['longlastingsession']))
450 {
ae00595b 451 setcookie('shaarli_staySignedIn', STAY_SIGNED_IN_TOKEN, time()+31536000, WEB_PATH);
45034273
SS		 452 $_SESSION['longlastingsession']=31536000; // (31536000 seconds = 1 year)
453 $_SESSION['expires_on']=time()+$_SESSION['longlastingsession']; // Set session expiration on server-side.
2d9fab88
SS		 454
455 $cookiedir = ''; if(dirname($_SERVER['SCRIPT_NAME'])!='/') $cookiedir=dirname($_SERVER["SCRIPT_NAME"]).'/';
2f32d074 456 session_set_cookie_params($_SESSION['longlastingsession'],$cookiedir,$_SERVER['SERVER_NAME']); // Set session cookie expiration on client side
ad6c27b7 457 // Note: Never forget the trailing slash on the cookie path!
45034273
SS		 458 session_regenerate_id(true); // Send cookie with new expiration date to browser.
459 }
460 else // Standard session expiration (=when browser closes)
461 {
2d9fab88 462 $cookiedir = ''; if(dirname($_SERVER['SCRIPT_NAME'])!='/') $cookiedir=dirname($_SERVER["SCRIPT_NAME"]).'/';
2f32d074 463 session_set_cookie_params(0,$cookiedir,$_SERVER['SERVER_NAME']); // 0 means "When browser closes"
45034273
SS		 464 session_regenerate_id(true);
465 }
f4c84ad7 466
45034273 467 // Optional redirect after login:
5fbabbb9
A		 468 if (isset($_GET['post'])) {
469 $uri = '?post='. urlencode($_GET['post']);
470 foreach (array('description', 'source', 'title') as $param) {
471 if (!empty($_GET[$param])) {
472 $uri .= '&'.$param.'='.urlencode($_GET[$param]);
473 }
474 }
475 header('Location: '. $uri);
476 exit;
477 }
478
479 if (isset($_GET['edit_link'])) {
480 header('Location: ?edit_link='. escape($_GET['edit_link']));
481 exit;
482 }
483
484 if (isset($_POST['returnurl'])) {
485 // Prevent loops over login screen.
486 if (strpos($_POST['returnurl'], 'do=login') === false) {
e15f08d7 487 header('Location: '. generateLocation($_POST['returnurl'], $_SERVER['HTTP_HOST']));
5fbabbb9
A		 488 exit;
489 }
45034273
SS		 490 }
491 header('Location: ?'); exit;
492 }
493 else
494 {
495 ban_loginFailed();
705f8355 496 $redir = '';
5fbabbb9
A		 497 if (isset($_GET['post'])) {
498 $redir = '?post=' . urlencode($_GET['post']);
499 foreach (array('description', 'source', 'title') as $param) {
500 if (!empty($_GET[$param])) {
501 $redir .= '&' . $param . '=' . urlencode($_GET[$param]);
502 }
503 }
504 }
fe16b01e 505 echo '<script>alert("Wrong login/password.");document.location=\'?do=login'.$redir.'\';</script>'; // Redirect to login screen.
45034273
SS		 506 exit;
507 }
508}
509
510// ------------------------------------------------------------------------------------------
511// Misc utility functions:
512
ad6c27b7 513// Convert post_max_size/upload_max_filesize (e.g. '16M') parameters to bytes.
45034273
SS		 514function return_bytes($val)
515{
516 $val = trim($val); $last=strtolower($val[strlen($val)-1]);
517 switch($last)
518 {
519 case 'g': $val *= 1024;
520 case 'm': $val *= 1024;
521 case 'k': $val *= 1024;
522 }
523 return $val;
524}
525
526// Try to determine max file size for uploads (POST).
527// Returns an integer (in bytes)
528function getMaxFileSize()
529{
530 $size1 = return_bytes(ini_get('post_max_size'));
531 $size2 = return_bytes(ini_get('upload_max_filesize'));
532 // Return the smaller of two:
533 $maxsize = min($size1,$size2);
ad6c27b7 534 // FIXME: Then convert back to readable notations ? (e.g. 2M instead of 2000000)
45034273
SS		 535 return $maxsize;
536}
537
45034273
SS		 538// ------------------------------------------------------------------------------------------
539// Token management for XSRF protection
540// Token should be used in any form which acts on data (create,update,delete,import...).
541if (!isset($_SESSION['tokens'])) $_SESSION['tokens']=array(); // Token are attached to the session.
542
543// Returns a token.
544function getToken()
545{
a1f5a6ec 546 $rnd = sha1(uniqid('',true).'_'.mt_rand().$GLOBALS['salt']); // We generate a random string.
45034273
SS		 547 $_SESSION['tokens'][$rnd]=1; // Store it on the server side.
548 return $rnd;
549}
550
ad6c27b7 551// Tells if a token is OK. Using this function will destroy the token.
552// true=token is OK.
45034273
SS		 553function tokenOk($token)
554{
555 if (isset($_SESSION['tokens'][$token]))
556 {
557 unset($_SESSION['tokens'][$token]); // Token is used: destroy it.
ad6c27b7 558 return true; // Token is OK.
45034273
SS		 559 }
560 return false; // Wrong token, or already used.
561}
562
563// ------------------------------------------------------------------------------------------
564/* This class is in charge of building the final page.
565 (This is basically a wrapper around RainTPL which pre-fills some fields.)
566 p = new pageBuilder;
567 p.assign('myfield','myvalue');
568 p.renderPage('mytemplate');
bb8f712d 569
45034273
SS		 570*/
571class pageBuilder
572{
573 private $tpl; // RainTPL template
574
575 function __construct()
576 {
056107ab 577 $this->tpl = false;
bb8f712d 578 }
45034273 579
056107ab
A		 580 /**
581 * Initialize all default tpl tags.
582 */
45034273 583 private function initialize()
bb8f712d
KT		 584 {
585 $this->tpl = new RainTPL;
4407b45f
V		 586
587 try {
588 $version = ApplicationUtils::checkUpdate(
589 shaarli_version,
590 $GLOBALS['config']['UPDATECHECK_FILENAME'],
591 $GLOBALS['config']['UPDATECHECK_INTERVAL'],
592 $GLOBALS['config']['ENABLE_UPDATECHECK'],
593 isLoggedIn(),
594 $GLOBALS['config']['UPDATECHECK_BRANCH']
595 );
596 $this->tpl->assign('newVersion', escape($version));
4a7af975 597 $this->tpl->assign('versionError', '');
4407b45f
V		 598
599 } catch (Exception $exc) {
1abe6555 600 logm($GLOBALS['config']['LOG_FILE'], $_SERVER['REMOTE_ADDR'], $exc->getMessage());
4a7af975 601 $this->tpl->assign('newVersion', '');
4407b45f
V		 602 $this->tpl->assign('versionError', escape($exc->getMessage()));
603 }
604
056107ab
A		 605 $this->tpl->assign('feedurl', escape(index_url($_SERVER)));
606 $searchcrits = ''; // Search criteria
607 if (!empty($_GET['searchtags'])) {
608 $searchcrits .= '&searchtags=' . urlencode($_GET['searchtags']);
609 }
c51fae92 610 if (!empty($_GET['searchterm'])) {
056107ab
A		 611 $searchcrits .= '&searchterm=' . urlencode($_GET['searchterm']);
612 }
613 $this->tpl->assign('searchcrits', $searchcrits);
614 $this->tpl->assign('source', index_url($_SERVER));
615 $this->tpl->assign('version', shaarli_version);
616 $this->tpl->assign('scripturl', index_url($_SERVER));
617 $this->tpl->assign('pagetitle', 'Shaarli');
618 $this->tpl->assign('privateonly', !empty($_SESSION['privateonly'])); // Show only private links?
619 if (!empty($GLOBALS['title'])) {
620 $this->tpl->assign('pagetitle', $GLOBALS['title']);
621 }
622 if (!empty($GLOBALS['titleLink'])) {
623 $this->tpl->assign('titleLink', $GLOBALS['titleLink']);
624 }
625 if (!empty($GLOBALS['pagetitle'])) {
626 $this->tpl->assign('pagetitle', $GLOBALS['pagetitle']);
627 }
628 $this->tpl->assign('shaarlititle', empty($GLOBALS['title']) ? 'Shaarli': $GLOBALS['title']);
e4b9a763
A		 629 if (!empty($GLOBALS['plugin_errors'])) {
630 $this->tpl->assign('plugin_errors', $GLOBALS['plugin_errors']);
056107ab 631 }
45034273 632 }
bb8f712d 633
45034273
SS		 634 // The following assign() method is basically the same as RainTPL (except that it's lazy)
635 public function assign($what,$where)
636 {
637 if ($this->tpl===false) $this->initialize(); // Lazy initialization
638 $this->tpl->assign($what,$where);
639 }
bb8f712d 640
1c2fdb98
A		 641 /**
642 * Assign an array of data to the template builder.
643 *
644 * @param array $data Data to assign.
645 *
646 * @return false if invalid data.
647 */
648 public function assignAll($data)
649 {
650 // Lazy initialization
651 if ($this->tpl === false) {
652 $this->initialize();
653 }
654
655 if (empty($data) || !is_array($data)){
656 return false;
657 }
658
659 foreach ($data as $key => $value) {
660 $this->assign($key, $value);
661 }
662 }
663
45034273 664 // Render a specific page (using a template).
ad6c27b7 665 // e.g. pb.renderPage('picwall')
45034273
SS		 666 public function renderPage($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
SS		 685// ------------------------------------------------------------------------------------------
686// Daily RSS feed: 1 RSS entry per day giving all the links on that day.
687// Gives the last 7 days (which have links).
688// This RSS feed cannot be filtered.
f3b8f9f0 689function showDailyRSS() {
45034273
SS		 690 // Cache system
691 $query = $_SERVER["QUERY_STRING"];
01e48f26
V		 692 $cache = new CachedPage(
693 $GLOBALS['config']['PAGECACHE'],
482d67bd 694 page_url($_SERVER),
01e48f26
V		 695 startsWith($query,'do=dailyrss') && !isLoggedIn()
696 );
f3b8f9f0
A		 697 $cached = $cache->cachedVersion();
698 if (!empty($cached)) {
699 echo $cached;
700 exit;
701 }
9f15ca9e 702
f3b8f9f0
A		 703 // If cached was not found (or not usable), then read the database and build the response:
704 // Read links from database (and filter private links if used it not logged in).
9f15ca9e 705 $LINKSDB = new LinkDB(
9c8752a2 706 $GLOBALS['config']['DATASTORE'],
02ad8fb6 707 isLoggedIn(),
90e5bd65
A		 708 $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
709 $GLOBALS['redirector']
9f15ca9e 710 );
bb8f712d 711
45034273
SS		 712 /* Some Shaarlies may have very few links, so we need to look
713 back in time (rsort()) until we have enough days ($nb_of_days).
714 */
f3b8f9f0
A		 715 $linkdates = array();
716 foreach ($LINKSDB as $linkdate => $value) {
717 $linkdates[] = $linkdate;
718 }
45034273 719 rsort($linkdates);
f3b8f9f0
A		 720 $nb_of_days = 7; // We take 7 days.
721 $today = Date('Ymd');
722 $days = array();
723
724 foreach ($linkdates as $linkdate) {
725 $day = substr($linkdate, 0, 8); // Extract day (without time)
726 if (strcmp($day,$today) < 0) {
727 if (empty($days[$day])) {
728 $days[$day] = array();
729 }
730 $days[$day][] = $linkdate;
731 }
732
733 if (count($days) > $nb_of_days) {
734 break; // Have we collected enough days?
45034273 735 }
45034273 736 }
bb8f712d 737
45034273
SS		 738 // Build the RSS feed.
739 header('Content-Type: application/rss+xml; charset=utf-8');
482d67bd 740 $pageaddr = escape(index_url($_SERVER));
45034273 741 echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0">';
f3b8f9f0
A		 742 echo '<channel>';
743 echo '<title>Daily - '. $GLOBALS['title'] . '</title>';
744 echo '<link>'. $pageaddr .'</link>';
745 echo '<description>Daily shared links</description>';
746 echo '<language>en-en</language>';
747 echo '<copyright>'. $pageaddr .'</copyright>'. PHP_EOL;
748
749 // For each day.
750 foreach ($days as $day => $linkdates) {
205a4277 751 $dayDate = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $day.'_000000');
482d67bd 752 $absurl = escape(index_url($_SERVER).'?do=daily&day='.$day); // Absolute URL of the corresponding "Daily" page.
bb8f712d 753
45034273 754 // Build the HTML body of this RSS entry.
f3b8f9f0
A		 755 $html = '';
756 $href = '';
757 $links = array();
758
45034273 759 // We pre-format some fields for proper output.
f3b8f9f0 760 foreach ($linkdates as $linkdate) {
45034273 761 $l = $LINKSDB[$linkdate];
90e5bd65 762 $l['formatedDescription'] = format_description($l['description'], $GLOBALS['redirector']);
bb8f712d 763 $l['thumbnail'] = thumbnail($l['url']);
205a4277
V		 764 $l_date = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $l['linkdate']);
765 $l['timestamp'] = $l_date->getTimestamp();
f3b8f9f0 766 if (startsWith($l['url'], '?')) {
482d67bd 767 $l['url'] = index_url($_SERVER) . $l['url']; // make permalink URL absolute
f3b8f9f0
A		 768 }
769 $links[$linkdate] = $l;
45034273 770 }
f3b8f9f0 771
45034273 772 // Then build the HTML for this day:
bb8f712d 773 $tpl = new RainTPL;
f3b8f9f0 774 $tpl->assign('title', $GLOBALS['title']);
205a4277 775 $tpl->assign('daydate', $dayDate->getTimestamp());
f3b8f9f0
A		 776 $tpl->assign('absurl', $absurl);
777 $tpl->assign('links', $links);
205a4277 778 $tpl->assign('rssdate', escape($dayDate->format(DateTime::RSS)));
f3b8f9f0 779 $html = $tpl->draw('dailyrss', $return_string=true);
45034273 780
f3b8f9f0 781 echo $html . PHP_EOL;
bb8f712d 782 }
482d67bd 783 echo '</channel></rss><!-- Cached version of '. escape(page_url($_SERVER)) .' -->';
bb8f712d 784
45034273
SS		 785 $cache->cache(ob_get_contents());
786 ob_end_flush();
787 exit;
788}
789
38603b24
A		 790/**
791 * Show the 'Daily' page.
792 *
793 * @param PageBuilder $pageBuilder Template engine wrapper.
794 */
795function showDaily($pageBuilder)
45034273 796{
9f15ca9e 797 $LINKSDB = new LinkDB(
9c8752a2 798 $GLOBALS['config']['DATASTORE'],
02ad8fb6 799 isLoggedIn(),
90e5bd65
A		 800 $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
801 $GLOBALS['redirector']
9f15ca9e 802 );
45034273
SS		 803
804 $day=Date('Ymd',strtotime('-1 day')); // Yesterday, in format YYYYMMDD.
805 if (isset($_GET['day'])) $day=$_GET['day'];
bb8f712d 806
45034273
SS		 807 $days = $LINKSDB->days();
808 $i = array_search($day,$days);
f3db3774 809 if ($i===false) { $i=count($days)-1; $day=$days[$i]; }
bb8f712d
KT		 810 $previousday='';
811 $nextday='';
45034273
SS		 812 if ($i!==false)
813 {
f3db3774 814 if ($i>=1) $previousday=$days[$i-1];
45034273
SS		 815 if ($i<count($days)-1) $nextday=$days[$i+1];
816 }
817
9186ab95 818 try {
528a6f8a 819 $linksToDisplay = $LINKSDB->filterDay($day);
9186ab95
V		 820 } catch (Exception $exc) {
821 error_log($exc);
d1e2f8e5 822 $linksToDisplay = array();
9186ab95
V		 823 }
824
45034273
SS		 825 // We pre-format some fields for proper output.
826 foreach($linksToDisplay as $key=>$link)
827 {
5f85fcd8 828
dd62b9ba
SS		 829 $taglist = explode(' ',$link['tags']);
830 uasort($taglist, 'strcasecmp');
831 $linksToDisplay[$key]['taglist']=$taglist;
90e5bd65 832 $linksToDisplay[$key]['formatedDescription'] = format_description($link['description'], $GLOBALS['redirector']);
bb8f712d 833 $linksToDisplay[$key]['thumbnail'] = thumbnail($link['url']);
205a4277
V		 834 $date = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $link['linkdate']);
835 $linksToDisplay[$key]['timestamp'] = $date->getTimestamp();
45034273 836 }
bb8f712d 837
45034273 838 /* We need to spread the articles on 3 columns.
ad6c27b7 839 I did not want to use a JavaScript lib like http://masonry.desandro.com/
bb8f712d 840 so I manually spread entries with a simple method: I roughly evaluate the
45034273
SS		 841 height of a div according to title and description length.
842 */
843 $columns=array(array(),array(),array()); // Entries to display, for each column.
844 $fill=array(0,0,0); // Rough estimate of columns fill.
845 foreach($linksToDisplay as $key=>$link)
846 {
847 // Roughly estimate length of entry (by counting characters)
848 // Title: 30 chars = 1 line. 1 line is 30 pixels height.
849 // Description: 836 characters gives roughly 342 pixel height.
ad6c27b7 850 // This is not perfect, but it's usually OK.
45034273
SS		 851 $length=strlen($link['title'])+(342*strlen($link['description']))/836;
852 if ($link['thumbnail']) $length +=100; // 1 thumbnails roughly takes 100 pixels height.
853 // Then put in column which is the less filled:
854 $smallest=min($fill); // find smallest value in array.
855 $index=array_search($smallest,$fill); // find index of this smallest value.
856 array_push($columns[$index],$link); // Put entry in this column.
857 $fill[$index]+=$length;
858 }
38603b24 859
205a4277 860 $dayDate = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $day.'_000000');
6fc14d53
A		 861 $data = array(
862 'linksToDisplay' => $linksToDisplay,
863 'linkcount' => count($LINKSDB),
864 'cols' => $columns,
205a4277 865 'day' => $dayDate->getTimestamp(),
6fc14d53
A		 866 'previousday' => $previousday,
867 'nextday' => $nextday,
868 );
869 $pluginManager = PluginManager::getInstance();
870 $pluginManager->executeHooks('render_daily', $data, array('loggedin' => isLoggedIn()));
871
872 foreach ($data as $key => $value) {
38603b24 873 $pageBuilder->assign($key, $value);
6fc14d53
A		 874 }
875
38603b24 876 $pageBuilder->renderPage('daily');
45034273
SS		 877 exit;
878}
879
6fc14d53
A		 880// Renders the linklist
881function showLinkList($PAGE, $LINKSDB) {
882 buildLinkList($PAGE,$LINKSDB); // Compute list of links to display
883 $PAGE->renderPage('linklist');
884}
885
45034273
SS		 886
887// ------------------------------------------------------------------------------------------
888// Render HTML page (according to URL parameters and user rights)
889function renderPage()
890{
9f15ca9e 891 $LINKSDB = new LinkDB(
9c8752a2 892 $GLOBALS['config']['DATASTORE'],
02ad8fb6 893 isLoggedIn(),
90e5bd65
A		 894 $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
895 $GLOBALS['redirector']
9f15ca9e 896 );
45034273 897
510377d2
A		 898 $updater = new Updater(
899 read_updates_file($GLOBALS['config']['UPDATES_FILE']),
900 $GLOBALS,
901 $LINKSDB,
902 isLoggedIn()
903 );
904 try {
905 $newUpdates = $updater->update();
906 if (! empty($newUpdates)) {
907 write_updates_file(
908 $GLOBALS['config']['UPDATES_FILE'],
909 $updater->getDoneUpdates()
910 );
911 }
912 }
913 catch(Exception $e) {
914 die($e->getMessage());
915 }
916
6fc14d53
A		 917 $PAGE = new pageBuilder;
918
919 // Determine which page will be rendered.
920 $query = (isset($_SERVER['QUERY_STRING'])) ? $_SERVER['QUERY_STRING'] : '';
921 $targetPage = Router::findPage($query, $_GET, isLoggedIn());
922
923 // Call plugin hooks for header, footer and includes, specifying which page will be rendered.
924 // Then assign generated data to RainTPL.
925 $common_hooks = array(
fea5db7a 926 'includes',
6fc14d53
A		 927 'header',
928 'footer',
6fc14d53
A		 929 );
930 $pluginManager = PluginManager::getInstance();
931 foreach($common_hooks as $name) {
932 $plugin_data = array();
933 $pluginManager->executeHooks('render_' . $name, $plugin_data,
934 array(
935 'target' => $targetPage,
936 'loggedin' => isLoggedIn()
937 )
938 );
939 $PAGE->assign('plugins_' . $name, $plugin_data);
940 }
941
45034273 942 // -------- Display login form.
6fc14d53 943 if ($targetPage == Router::$PAGE_LOGIN)
45034273
SS		 944 {
945 if ($GLOBALS['config']['OPEN_SHAARLI']) { header('Location: ?'); exit; } // No need to login for open Shaarli
946 $token=''; if (ban_canLogin()) $token=getToken(); // Do not waste token generation if not useful.
45034273 947 $PAGE->assign('token',$token);
5f85fcd8 948 $PAGE->assign('returnurl',(isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']):''));
45034273
SS		 949 $PAGE->renderPage('loginform');
950 exit;
951 }
952 // -------- User wants to logout.
953 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=logout'))
954 {
01e48f26 955 invalidateCaches($GLOBALS['config']['PAGECACHE']);
45034273
SS		 956 logout();
957 header('Location: ?');
958 exit;
959 }
960
961 // -------- Picture wall
6fc14d53 962 if ($targetPage == Router::$PAGE_PICWALL)
45034273 963 {
ad6c27b7 964 // Optionally filter the results:
528a6f8a 965 $links = $LINKSDB->filterSearch($_GET);
822bffce 966 $linksToDisplay = array();
45034273
SS		 967
968 // Get only links which have a thumbnail.
969 foreach($links as $link)
970 {
5f85fcd8 971 $permalink='?'.escape(smallhash($link['linkdate']));
45034273
SS		 972 $thumb=lazyThumbnail($link['url'],$permalink);
973 if ($thumb!='') // Only output links which have a thumbnail.
974 {
975 $link['thumbnail']=$thumb; // Thumbnail HTML code.
45034273
SS		 976 $linksToDisplay[]=$link; // Add to array.
977 }
978 }
f3db3774 979
6fc14d53
A		 980 $data = array(
981 'linkcount' => count($LINKSDB),
982 'linksToDisplay' => $linksToDisplay,
983 );
984 $pluginManager->executeHooks('render_picwall', $data, array('loggedin' => isLoggedIn()));
985
986 foreach ($data as $key => $value) {
987 $PAGE->assign($key, $value);
988 }
989
45034273
SS		 990 $PAGE->renderPage('picwall');
991 exit;
992 }
993
994 // -------- Tag cloud
6fc14d53 995 if ($targetPage == Router::$PAGE_TAGCLOUD)
45034273
SS		 996 {
997 $tags= $LINKSDB->allTags();
a037ac69 998
45034273
SS		 999 // We sort tags alphabetically, then choose a font size according to count.
1000 // First, find max value.
f1e96a06
A		 1001 $maxcount = 0;
1002 foreach ($tags as $value) {
1003 $maxcount = max($maxcount, $value);
1004 }
1005
1006 // Sort tags alphabetically: case insensitive, support locale if avalaible.
1007 uksort($tags, function($a, $b) {
1008 // Collator is part of PHP intl.
1009 if (class_exists('Collator')) {
7eb0a832
A		 1010 $c = new Collator(setlocale(LC_COLLATE, 0));
1011 if (!intl_is_failure(intl_get_error_code())) {
1012 return $c->compare($a, $b);
1013 }
f1e96a06 1014 }
7eb0a832 1015 return strcasecmp($a, $b);
f1e96a06
A		 1016 });
1017
45034273
SS		 1018 $tagList=array();
1019 foreach($tags as $key=>$value)
f1e96a06 1020 // 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 1021 {
1e3b2740 1022 $tagList[$key] = array('count'=>$value,'size'=>log($value, 15) / log($maxcount, 30) * (22-6) + 6);
45034273 1023 }
6fc14d53
A		 1024
1025 $data = array(
1026 'linkcount' => count($LINKSDB),
1027 'tags' => $tagList,
1028 );
1029 $pluginManager->executeHooks('render_tagcloud', $data, array('loggedin' => isLoggedIn()));
1030
1031 foreach ($data as $key => $value) {
1032 $PAGE->assign($key, $value);
1033 }
1034
45034273 1035 $PAGE->renderPage('tagcloud');
bb8f712d 1036 exit;
45034273
SS		 1037 }
1038
38603b24
A		 1039 // Daily page.
1040 if ($targetPage == Router::$PAGE_DAILY) {
1041 showDaily($PAGE);
1042 }
1043
82e36802
A		 1044 // ATOM and RSS feed.
1045 if ($targetPage == Router::$PAGE_FEED_ATOM || $targetPage == Router::$PAGE_FEED_RSS) {
1046 $feedType = $targetPage == Router::$PAGE_FEED_RSS ? FeedBuilder::$FEED_RSS : FeedBuilder::$FEED_ATOM;
1047 header('Content-Type: application/'. $feedType .'+xml; charset=utf-8');
1048
1049 // Cache system
1050 $query = $_SERVER['QUERY_STRING'];
1051 $cache = new CachedPage(
1052 $GLOBALS['config']['PAGECACHE'],
1053 page_url($_SERVER),
1054 startsWith($query,'do='. $targetPage) && !isLoggedIn()
1055 );
1056 $cached = $cache->cachedVersion();
5f143b72 1057 if (!empty($cached)) {
82e36802
A		 1058 echo $cached;
1059 exit;
1060 }
69c474b9 1061
82e36802
A		 1062 // Generate data.
1063 $feedGenerator = new FeedBuilder($LINKSDB, $feedType, $_SERVER, $_GET, isLoggedIn());
1064 $feedGenerator->setLocale(strtolower(setlocale(LC_COLLATE, 0)));
1065 $feedGenerator->setHideDates($GLOBALS['config']['HIDE_TIMESTAMPS'] && !isLoggedIn());
1066 $feedGenerator->setUsePermalinks(isset($_GET['permalinks']) || !$GLOBALS['config']['ENABLE_RSS_PERMALINKS']);
1067 if (!empty($GLOBALS['config']['PUBSUBHUB_URL'])) {
1068 $feedGenerator->setPubsubhubUrl($GLOBALS['config']['PUBSUBHUB_URL']);
1069 }
1070 $data = $feedGenerator->buildData();
1071
1072 // Process plugin hook.
1073 $pluginManager = PluginManager::getInstance();
1074 $pluginManager->executeHooks('render_feed', $data, array(
1075 'loggedin' => isLoggedIn(),
1076 'target' => $targetPage,
1077 ));
1078
1079 // Render the template.
1080 $PAGE->assignAll($data);
1081 $PAGE->renderPage('feed.'. $feedType);
1082 $cache->cache(ob_get_contents());
1083 ob_end_flush();
1084 exit;
e67712ba
A		 1085 }
1086
8f8113b9
A		 1087 // Display openseach plugin (XML)
1088 if ($targetPage == Router::$PAGE_OPENSEARCH) {
1089 header('Content-Type: application/xml; charset=utf-8');
1090 $PAGE->assign('serverurl', index_url($_SERVER));
1091 $PAGE->renderPage('opensearch');
1092 exit;
1093 }
1094
45034273
SS		 1095 // -------- User clicks on a tag in a link: The tag is added to the list of searched tags (searchtags=...)
1096 if (isset($_GET['addtag']))
1097 {
1098 // Get previous URL (http_referer) and add the tag to the searchtags parameters in query.
1099 if (empty($_SERVER['HTTP_REFERER'])) { header('Location: ?searchtags='.urlencode($_GET['addtag'])); exit; } // In case browser does not send HTTP_REFERER
1100 parse_str(parse_url($_SERVER['HTTP_REFERER'],PHP_URL_QUERY), $params);
732e683b 1101
775803a0
A		 1102 // Prevent redirection loop
1103 if (isset($params['addtag'])) {
1104 unset($params['addtag']);
1105 }
1106
732e683b
FE		 1107 // Check if this tag is already in the search query and ignore it if it is.
1108 // Each tag is always separated by a space
6ac95d9c
A		 1109 if (isset($params['searchtags'])) {
1110 $current_tags = explode(' ', $params['searchtags']);
1111 } else {
1112 $current_tags = array();
1113 }
732e683b
FE		 1114 $addtag = true;
1115 foreach ($current_tags as $value) {
1116 if ($value === $_GET['addtag']) {
1117 $addtag = false;
1118 break;
1119 }
1120 }
1121 // Append the tag if necessary
1122 if (empty($params['searchtags'])) {
1123 $params['searchtags'] = trim($_GET['addtag']);
1124 }
1125 else if ($addtag) {
1126 $params['searchtags'] = trim($params['searchtags']).' '.trim($_GET['addtag']);
1127 }
1128
45034273
SS		 1129 unset($params['page']); // We also remove page (keeping the same page has no sense, since the results are different)
1130 header('Location: ?'.http_build_query($params));
1131 exit;
1132 }
1133
1134 // -------- User clicks on a tag in result count: Remove the tag from the list of searched tags (searchtags=...)
775803a0 1135 if (isset($_GET['removetag'])) {
45034273 1136 // Get previous URL (http_referer) and remove the tag from the searchtags parameters in query.
775803a0
A		 1137 if (empty($_SERVER['HTTP_REFERER'])) {
1138 header('Location: ?');
1139 exit;
1140 }
1141
1142 // In case browser does not send HTTP_REFERER
1143 parse_str(parse_url($_SERVER['HTTP_REFERER'], PHP_URL_QUERY), $params);
1144
1145 // Prevent redirection loop
1146 if (isset($params['removetag'])) {
1147 unset($params['removetag']);
1148 }
1149
1150 if (isset($params['searchtags'])) {
822bffce 1151 $tags = explode(' ', $params['searchtags']);
2c75f8e7
A		 1152 // Remove value from array $tags.
1153 $tags = array_diff($tags, array($_GET['removetag']));
1154 $params['searchtags'] = implode(' ',$tags);
1155
1156 if (empty($params['searchtags'])) {
775803a0 1157 unset($params['searchtags']);
775803a0 1158 }
2c75f8e7 1159
45034273
SS		 1160 unset($params['page']); // We also remove page (keeping the same page has no sense, since the results are different)
1161 }
1162 header('Location: ?'.http_build_query($params));
1163 exit;
1164 }
1165
1166 // -------- User wants to change the number of links per page (linksperpage=...)
775803a0
A		 1167 if (isset($_GET['linksperpage'])) {
1168 if (is_numeric($_GET['linksperpage'])) {
1169 $_SESSION['LINKS_PER_PAGE']=abs(intval($_GET['linksperpage']));
1170 }
1171
1172 header('Location: '. generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('linksperpage')));
45034273
SS		 1173 exit;
1174 }
bb8f712d 1175
45034273 1176 // -------- User wants to see only private links (toggle)
775803a0
A		 1177 if (isset($_GET['privateonly'])) {
1178 if (empty($_SESSION['privateonly'])) {
1179 $_SESSION['privateonly'] = 1; // See only private links
1180 } else {
45034273
SS		 1181 unset($_SESSION['privateonly']); // See all links
1182 }
775803a0
A		 1183
1184 header('Location: '. generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('privateonly')));
45034273
SS		 1185 exit;
1186 }
1187
1188 // -------- Handle other actions allowed for non-logged in users:
1189 if (!isLoggedIn())
1190 {
ad6c27b7 1191 // User tries to post new link but is not logged in:
45034273
SS		 1192 // Show login screen, then redirect to ?post=...
1193 if (isset($_GET['post']))
1194 {
a1795ddc 1195 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($_GET['source']):'')); // Redirect to login page, then back to post link.
45034273
SS		 1196 exit;
1197 }
aedc912d
FE		 1198
1199 // Same case as above except that user tried to access ?do=addlink without being logged in
1200 // Note: passing empty parameters makes Shaarli generate default URLs and descriptions.
1201 if (isset($_GET['do']) && $_GET['do'] === 'addlink') {
1202 header('Location: ?do=login&post=');
1203 exit;
1204 }
6fc14d53 1205 showLinkList($PAGE, $LINKSDB);
5fbabbb9
A		 1206 if (isset($_GET['edit_link'])) {
1207 header('Location: ?do=login&edit_link='. escape($_GET['edit_link']));
1208 exit;
1209 }
1210
ad6c27b7 1211 exit; // Never remove this one! All operations below are reserved for logged in user.
45034273
SS		 1212 }
1213
1214 // -------- All other functions are reserved for the registered user:
1215
1216 // -------- Display the Tools menu if requested (import/export/bookmarklet...)
6fc14d53 1217 if ($targetPage == Router::$PAGE_TOOLS)
45034273 1218 {
6fc14d53
A		 1219 $data = array(
1220 'linkcount' => count($LINKSDB),
1221 'pageabsaddr' => index_url($_SERVER),
1222 );
1223 $pluginManager->executeHooks('render_tools', $data);
1224
1225 foreach ($data as $key => $value) {
1226 $PAGE->assign($key, $value);
1227 }
1228
45034273
SS		 1229 $PAGE->renderPage('tools');
1230 exit;
1231 }
1232
1233 // -------- User wants to change his/her password.
6fc14d53 1234 if ($targetPage == Router::$PAGE_CHANGEPASSWORD)
45034273
SS		 1235 {
1236 if ($GLOBALS['config']['OPEN_SHAARLI']) die('You are not supposed to change a password on an Open Shaarli.');
1237 if (!empty($_POST['setpassword']) && !empty($_POST['oldpassword']))
1238 {
ad6c27b7 1239 if (!tokenOk($_POST['token'])) die('Wrong token.'); // Go away!
45034273
SS		 1240
1241 // Make sure old password is correct.
1242 $oldhash = sha1($_POST['oldpassword'].$GLOBALS['login'].$GLOBALS['salt']);
fe16b01e 1243 if ($oldhash!=$GLOBALS['hash']) { echo '<script>alert("The old password is not correct.");document.location=\'?do=changepasswd\';</script>'; exit; }
45034273
SS		 1244 // Save new password
1245 $GLOBALS['salt'] = sha1(uniqid('',true).'_'.mt_rand()); // Salt renders rainbow-tables attacks useless.
1246 $GLOBALS['hash'] = sha1($_POST['setpassword'].$GLOBALS['login'].$GLOBALS['salt']);
dd484b90
A		 1247 try {
1248 writeConfig($GLOBALS, isLoggedIn());
1249 }
1250 catch(Exception $e) {
1251 error_log(
1252 'ERROR while writing config file after changing password.' . PHP_EOL .
1253 $e->getMessage()
1254 );
1255
1256 // TODO: do not handle exceptions/errors in JS.
1257 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do=tools\';</script>';
1258 exit;
1259 }
fe16b01e 1260 echo '<script>alert("Your password has been changed.");document.location=\'?do=tools\';</script>';
45034273
SS		 1261 exit;
1262 }
1263 else // show the change password form.
1264 {
45034273
SS		 1265 $PAGE->assign('linkcount',count($LINKSDB));
1266 $PAGE->assign('token',getToken());
1267 $PAGE->renderPage('changepassword');
1268 exit;
1269 }
1270 }
1271
1272 // -------- User wants to change configuration
6fc14d53 1273 if ($targetPage == Router::$PAGE_CONFIGURE)
45034273
SS		 1274 {
1275 if (!empty($_POST['title']) )
1276 {
ad6c27b7 1277 if (!tokenOk($_POST['token'])) die('Wrong token.'); // Go away!
45034273
SS		 1278 $tz = 'UTC';
1279 if (!empty($_POST['continent']) && !empty($_POST['city']))
d1e2f8e5 1280 if (isTimeZoneValid($_POST['continent'],$_POST['city']))
45034273
SS		 1281 $tz = $_POST['continent'].'/'.$_POST['city'];
1282 $GLOBALS['timezone'] = $tz;
1283 $GLOBALS['title']=$_POST['title'];
ebb2880d 1284 $GLOBALS['titleLink']=$_POST['titleLink'];
45034273
SS		 1285 $GLOBALS['redirector']=$_POST['redirector'];
1286 $GLOBALS['disablesessionprotection']=!empty($_POST['disablesessionprotection']);
bb8f712d 1287 $GLOBALS['privateLinkByDefault']=!empty($_POST['privateLinkByDefault']);
ed5b38dd 1288 $GLOBALS['config']['ENABLE_RSS_PERMALINKS']= !empty($_POST['enableRssPermalinks']);
329e0768 1289 $GLOBALS['config']['ENABLE_UPDATECHECK'] = !empty($_POST['updateCheck']);
caee7ff9 1290 $GLOBALS['config']['HIDE_PUBLIC_LINKS'] = !empty($_POST['hidePublicLinks']);
dd484b90
A		 1291 try {
1292 writeConfig($GLOBALS, isLoggedIn());
1293 }
1294 catch(Exception $e) {
1295 error_log(
1296 'ERROR while writing config file after configuration update.' . PHP_EOL .
1297 $e->getMessage()
1298 );
1299
1300 // TODO: do not handle exceptions/errors in JS.
1301 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do=tools\';</script>';
1302 exit;
1303 }
fe16b01e 1304 echo '<script>alert("Configuration was saved.");document.location=\'?do=tools\';</script>';
45034273
SS		 1305 exit;
1306 }
1307 else // Show the configuration form.
1308 {
45034273
SS		 1309 $PAGE->assign('linkcount',count($LINKSDB));
1310 $PAGE->assign('token',getToken());
5f85fcd8
A		 1311 $PAGE->assign('title', empty($GLOBALS['title']) ? '' : $GLOBALS['title'] );
1312 $PAGE->assign('redirector', empty($GLOBALS['redirector']) ? '' : $GLOBALS['redirector'] );
d1e2f8e5
V		 1313 list($timezone_form, $timezone_js) = generateTimeZoneForm($GLOBALS['timezone']);
1314 $PAGE->assign('timezone_form', $timezone_form);
45034273
SS		 1315 $PAGE->assign('timezone_js',$timezone_js);
1316 $PAGE->renderPage('configure');
1317 exit;
1318 }
1319 }
1320
1321 // -------- User wants to rename a tag or delete it
6fc14d53 1322 if ($targetPage == Router::$PAGE_CHANGETAG)
45034273 1323 {
6a6aa2b9
A		 1324 if (empty($_POST['fromtag']) || (empty($_POST['totag']) && isset($_POST['renametag']))) {
1325 $PAGE->assign('linkcount', count($LINKSDB));
1326 $PAGE->assign('token', getToken());
bdd1715b 1327 $PAGE->assign('tags', $LINKSDB->allTags());
45034273
SS		 1328 $PAGE->renderPage('changetag');
1329 exit;
1330 }
6a6aa2b9
A		 1331
1332 if (!tokenOk($_POST['token'])) {
1333 die('Wrong token.');
1334 }
45034273
SS		 1335
1336 // Delete a tag:
6a6aa2b9 1337 if (isset($_POST['deletetag']) && !empty($_POST['fromtag'])) {
528a6f8a 1338 $needle = trim($_POST['fromtag']);
822bffce 1339 // True for case-sensitive tag search.
528a6f8a 1340 $linksToAlter = $LINKSDB->filterSearch(array('searchtags' => $needle), true);
45034273
SS		 1341 foreach($linksToAlter as $key=>$value)
1342 {
1343 $tags = explode(' ',trim($value['tags']));
1344 unset($tags[array_search($needle,$tags)]); // Remove tag.
1345 $value['tags']=trim(implode(' ',$tags));
1346 $LINKSDB[$key]=$value;
1347 }
2e28269b 1348 $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']);
fe16b01e 1349 echo '<script>alert("Tag was removed from '.count($linksToAlter).' links.");document.location=\'?\';</script>';
45034273
SS		 1350 exit;
1351 }
1352
1353 // Rename a tag:
6a6aa2b9 1354 if (isset($_POST['renametag']) && !empty($_POST['fromtag']) && !empty($_POST['totag'])) {
528a6f8a 1355 $needle = trim($_POST['fromtag']);
822bffce 1356 // True for case-sensitive tag search.
528a6f8a 1357 $linksToAlter = $LINKSDB->filterSearch(array('searchtags' => $needle), true);
45034273
SS		 1358 foreach($linksToAlter as $key=>$value)
1359 {
1360 $tags = explode(' ',trim($value['tags']));
ad6c27b7 1361 $tags[array_search($needle,$tags)] = trim($_POST['totag']); // Replace tags value.
45034273
SS		 1362 $value['tags']=trim(implode(' ',$tags));
1363 $LINKSDB[$key]=$value;
1364 }
01e48f26 1365 $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']); // Save to disk.
fe16b01e 1366 echo '<script>alert("Tag was renamed in '.count($linksToAlter).' links.");document.location=\'?searchtags='.urlencode($_POST['totag']).'\';</script>';
45034273
SS		 1367 exit;
1368 }
1369 }
1370
ad6c27b7 1371 // -------- User wants to add a link without using the bookmarklet: Show form.
6fc14d53 1372 if ($targetPage == Router::$PAGE_ADDLINK)
45034273 1373 {
45034273
SS		 1374 $PAGE->assign('linkcount',count($LINKSDB));
1375 $PAGE->renderPage('addlink');
1376 exit;
1377 }
1378
1379 // -------- User clicked the "Save" button when editing a link: Save link to database.
1380 if (isset($_POST['save_edit']))
1381 {
5a23950c
A		 1382 // Go away!
1383 if (! tokenOk($_POST['token'])) {
1384 die('Wrong token.');
1385 }
1386 // Remove multiple spaces.
1387 $tags = trim(preg_replace('/\s\s+/', ' ', $_POST['lf_tags']));
ce354bf1
A		 1388 // Remove first '-' char in tags.
1389 $tags = preg_replace('/(^| )\-/', '$1', $tags);
5a23950c
A		 1390 // Remove duplicates.
1391 $tags = implode(' ', array_unique(explode(' ', $tags)));
1392 $linkdate = $_POST['lf_linkdate'];
feebc6d4 1393 $url = trim($_POST['lf_url']);
5a23950c
A		 1394 if (! startsWith($url, 'http:') && ! startsWith($url, 'https:')
1395 && ! startsWith($url, 'ftp:') && ! startsWith($url, 'magnet:')
1396 && ! startsWith($url, '?') && ! startsWith($url, 'javascript:')
1397 ) {
1398 $url = 'http://' . $url;
1399 }
1400
1401 $link = array(
1402 'title' => trim($_POST['lf_title']),
1403 'url' => $url,
ed853da7 1404 'description' => $_POST['lf_description'],
5a23950c
A		 1405 'private' => (isset($_POST['lf_private']) ? 1 : 0),
1406 'linkdate' => $linkdate,
1407 'tags' => str_replace(',', ' ', $tags)
1408 );
1409 // If title is empty, use the URL as title.
1410 if ($link['title'] == '') {
1411 $link['title'] = $link['url'];
1412 }
6fc14d53
A		 1413
1414 $pluginManager->executeHooks('save_link', $link);
1415
45034273 1416 $LINKSDB[$linkdate] = $link;
5a23950c 1417 $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']);
45034273
SS		 1418 pubsubhub();
1419
1420 // If we are called from the bookmarklet, we must close the popup:
d01c2342
A		 1421 if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) {
1422 echo '<script>self.close();</script>';
1423 exit;
1424 }
1425
fd50e14c 1426 $returnurl = !empty($_POST['returnurl']) ? $_POST['returnurl'] : '?';
775803a0 1427 $location = generateLocation($returnurl, $_SERVER['HTTP_HOST'], array('addlink', 'post', 'edit_link'));
5a23950c
A		 1428 // Scroll to the link which has been edited.
1429 $location .= '#' . smallHash($_POST['lf_linkdate']);
1430 // After saving the link, redirect to the page the user was on.
1431 header('Location: '. $location);
45034273
SS		 1432 exit;
1433 }
1434
1435 // -------- User clicked the "Cancel" button when editing a link.
1436 if (isset($_POST['cancel_edit']))
1437 {
ad6c27b7 1438 // If we are called from the bookmarklet, we must close the popup:
d33c5d4c 1439 if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) { echo '<script>self.close();</script>'; exit; }
45034273 1440 $returnurl = ( isset($_POST['returnurl']) ? $_POST['returnurl'] : '?' );
b342b2a4 1441 $returnurl .= '#'.smallHash($_POST['lf_linkdate']); // Scroll to the link which has been edited.
775803a0 1442 $returnurl = generateLocation($returnurl, $_SERVER['HTTP_HOST'], array('addlink', 'post', 'edit_link'));
45034273
SS		 1443 header('Location: '.$returnurl); // After canceling, redirect to the page the user was on.
1444 exit;
1445 }
1446
ad6c27b7 1447 // -------- User clicked the "Delete" button when editing a link: Delete link from database.
45034273
SS		 1448 if (isset($_POST['delete_link']))
1449 {
1450 if (!tokenOk($_POST['token'])) die('Wrong token.');
1451 // We do not need to ask for confirmation:
ad6c27b7 1452 // - confirmation is handled by JavaScript
45034273
SS		 1453 // - we are protected from XSRF by the token.
1454 $linkdate=$_POST['lf_linkdate'];
6fc14d53
A		 1455
1456 $pluginManager->executeHooks('delete_link', $LINKSDB[$linkdate]);
1457
45034273 1458 unset($LINKSDB[$linkdate]);
01e48f26 1459 $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']); // save to disk
45034273
SS		 1460
1461 // If we are called from the bookmarklet, we must close the popup:
d33c5d4c 1462 if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) { echo '<script>self.close();</script>'; exit; }
d528433d 1463 // Pick where we're going to redirect
1464 // =============================================================
1465 // Basically, we can't redirect to where we were previously if it was a permalink
1466 // or an edit_link, because it would 404.
1467 // Cases:
1468 // - / : nothing in $_GET, redirect to self
1469 // - /?page : redirect to self
d33c5d4c 1470 // - /?searchterm : redirect to self (there might be other links)
d528433d 1471 // - /?searchtags : redirect to self
1472 // - /permalink : redirect to / (the link does not exist anymore)
1473 // - /?edit_link : redirect to / (the link does not exist anymore)
1474 // PHP treats the permalink as a $_GET variable, so we need to check if every condition for self
1475 // redirect is not satisfied, and only then redirect to /
1476 $location = "?";
1477 // Self redirection
775803a0
A		 1478 if (count($_GET) == 0
1479 || isset($_GET['page'])
1480 || isset($_GET['searchterm'])
1481 || isset($_GET['searchtags'])
1482 ) {
d528433d 1483 if (isset($_POST['returnurl'])) {
1484 $location = $_POST['returnurl']; // Handle redirects given by the form
775803a0
A		 1485 } else {
1486 $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('delete_link'));
d528433d 1487 }
1488 }
1489
1490 header('Location: ' . $location); // After deleting the link, redirect to appropriate location
45034273
SS		 1491 exit;
1492 }
1493
1494 // -------- User clicked the "EDIT" button on a link: Display link edit form.
1495 if (isset($_GET['edit_link']))
1496 {
1497 $link = $LINKSDB[$_GET['edit_link']]; // Read database
1498 if (!$link) { header('Location: ?'); exit; } // Link not found in database.
6fc14d53
A		 1499 $data = array(
1500 'linkcount' => count($LINKSDB),
1501 'link' => $link,
1502 'link_is_new' => false,
1503 'token' => getToken(),
1504 'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
1505 'tags' => $LINKSDB->allTags(),
1506 );
1507 $pluginManager->executeHooks('render_editlink', $data);
1508
1509 foreach ($data as $key => $value) {
1510 $PAGE->assign($key, $value);
1511 }
1512
45034273
SS		 1513 $PAGE->renderPage('editlink');
1514 exit;
1515 }
1516
1517 // -------- User want to post a new link: Display link edit form.
d9d776af 1518 if (isset($_GET['post'])) {
1557cefb 1519 $url = cleanup_url(escape($_GET['post']));
45034273
SS		 1520
1521 $link_is_new = false;
9e1724f1 1522 // Check if URL is not already in database (in this case, we will edit the existing link)
ef591e7e 1523 $link = $LINKSDB->getLinkFromUrl($url);
45034273
SS		 1524 if (!$link)
1525 {
9e1724f1 1526 $link_is_new = true;
45034273 1527 $linkdate = strval(date('Ymd_His'));
9e1724f1 1528 // Get title if it was provided in URL (by the bookmarklet).
739dc243 1529 $title = empty($_GET['title']) ? '' : escape($_GET['title']);
9e1724f1 1530 // Get description if it was provided in URL (by the bookmarklet). [Bronco added that]
739dc243
A		 1531 $description = empty($_GET['description']) ? '' : escape($_GET['description']);
1532 $tags = empty($_GET['tags']) ? '' : escape($_GET['tags']);
1533 $private = !empty($_GET['private']) && $_GET['private'] === "1" ? 1 : 0;
26c50346 1534 // If this is an HTTP(S) link, we try go get the page to extract the title (otherwise we will to straight to the edit form.)
ef591e7e 1535 if (empty($title) && strpos(get_url_scheme($url), 'http') !== false) {
451314eb 1536 // Short timeout to keep the application responsive
1557cefb 1537 list($headers, $content) = get_http_response($url, 4);
451314eb 1538 if (strpos($headers[0], '200 OK') !== false) {
1557cefb
A		 1539 // Retrieve charset.
1540 $charset = get_charset($headers, $content);
1541 // Extract title.
1542 $title = html_extract_title($content);
1543 // Re-encode title in utf-8 if necessary.
1544 if (! empty($title) && $charset != 'utf-8') {
1545 $title = mb_convert_encoding($title, $charset, 'utf-8');
9e1724f1
A		 1546 }
1547 }
45034273 1548 }
1557cefb 1549
9e1724f1
A		 1550 if ($url == '') {
1551 $url = '?' . smallHash($linkdate);
1552 $title = 'Note: ';
27646ca5 1553 }
1557cefb 1554
9e1724f1
A		 1555 $link = array(
1556 'linkdate' => $linkdate,
1557 'title' => $title,
ef591e7e 1558 'url' => $url,
9e1724f1
A		 1559 'description' => $description,
1560 'tags' => $tags,
1561 'private' => $private
1562 );
45034273
SS		 1563 }
1564
6fc14d53
A		 1565 $data = array(
1566 'linkcount' => count($LINKSDB),
1567 'link' => $link,
1568 'link_is_new' => $link_is_new,
1569 'token' => getToken(), // XSRF protection.
1570 'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
1571 'source' => (isset($_GET['source']) ? $_GET['source'] : ''),
1572 'tags' => $LINKSDB->allTags(),
1573 );
1574 $pluginManager->executeHooks('render_editlink', $data);
1575
1576 foreach ($data as $key => $value) {
1577 $PAGE->assign($key, $value);
1578 }
1579
45034273
SS		 1580 $PAGE->renderPage('editlink');
1581 exit;
1582 }
1583
1584 // -------- Export as Netscape Bookmarks HTML file.
6fc14d53 1585 if ($targetPage == Router::$PAGE_EXPORT)
45034273
SS		 1586 {
1587 if (empty($_GET['what']))
1588 {
45034273
SS		 1589 $PAGE->assign('linkcount',count($LINKSDB));
1590 $PAGE->renderPage('export');
1591 exit;
1592 }
1593 $exportWhat=$_GET['what'];
ad6c27b7 1594 if (!array_intersect(array('all','public','private'),array($exportWhat))) die('What are you trying to export???');
45034273
SS		 1595
1596 header('Content-Type: text/html; charset=utf-8');
1597 header('Content-disposition: attachment; filename=bookmarks_'.$exportWhat.'_'.strval(date('Ymd_His')).'.html');
1598 $currentdate=date('Y/m/d H:i:s');
1599 echo <<<HTML
1600<!DOCTYPE NETSCAPE-Bookmark-file-1>
1601<!-- This is an automatically generated file.
1602 It will be read and overwritten.
1603 DO NOT EDIT! -->
1604<!-- Shaarli {$exportWhat} bookmarks export on {$currentdate} -->
1605<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8">
1606<TITLE>Bookmarks</TITLE>
1607<H1>Bookmarks</H1>
1608HTML;
1609 foreach($LINKSDB as $link)
1610 {
1611 if ($exportWhat=='all' ||
1612 ($exportWhat=='private' && $link['private']!=0) ||
1613 ($exportWhat=='public' && $link['private']==0))
1614 {
205a4277
V		 1615 $date = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $link['linkdate']);
1616 echo '<DT><A HREF="'.$link['url'].'" ADD_DATE="'.$date->getTimestamp().'" PRIVATE="'.$link['private'].'"';
5f85fcd8
A		 1617 if ($link['tags']!='') echo ' TAGS="'.str_replace(' ',',',$link['tags']).'"';
1618 echo '>'.$link['title']."</A>\n";
1619 if ($link['description']!='') echo '<DD>'.$link['description']."\n";
45034273
SS		 1620 }
1621 }
1622 exit;
1623 }
1624
1625 // -------- User is uploading a file for import
1626 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=upload'))
1627 {
1628 // If file is too big, some form field may be missing.
1629 if (!isset($_POST['token']) || (!isset($_FILES)) || (isset($_FILES['filetoupload']['size']) && $_FILES['filetoupload']['size']==0))
1630 {
1631 $returnurl = ( empty($_SERVER['HTTP_REFERER']) ? '?' : $_SERVER['HTTP_REFERER'] );
5f85fcd8 1632 echo '<script>alert("The file you are trying to upload is probably bigger than what this webserver can accept ('.getMaxFileSize().' bytes). Please upload in smaller chunks.");document.location=\''.escape($returnurl).'\';</script>';
45034273
SS		 1633 exit;
1634 }
1635 if (!tokenOk($_POST['token'])) die('Wrong token.');
1636 importFile();
1637 exit;
1638 }
1639
1640 // -------- Show upload/import dialog:
6fc14d53 1641 if ($targetPage == Router::$PAGE_IMPORT)
45034273 1642 {
45034273
SS		 1643 $PAGE->assign('linkcount',count($LINKSDB));
1644 $PAGE->assign('token',getToken());
1645 $PAGE->assign('maxfilesize',getMaxFileSize());
1646 $PAGE->renderPage('import');
1647 exit;
1648 }
1649
dea0ba28
A		 1650 // Plugin administration page
1651 if ($targetPage == Router::$PAGE_PLUGINSADMIN) {
1652 $pluginMeta = $pluginManager->getPluginsMeta();
1653
1654 // Split plugins into 2 arrays: ordered enabled plugins and disabled.
1655 $enabledPlugins = array_filter($pluginMeta, function($v) { return $v['order'] !== false; });
1656 // Load parameters.
1657 $enabledPlugins = load_plugin_parameter_values($enabledPlugins, $GLOBALS['plugins']);
1658 uasort(
1659 $enabledPlugins,
1660 function($a, $b) { return $a['order'] - $b['order']; }
1661 );
1662 $disabledPlugins = array_filter($pluginMeta, function($v) { return $v['order'] === false; });
1663
1664 $PAGE->assign('enabledPlugins', $enabledPlugins);
1665 $PAGE->assign('disabledPlugins', $disabledPlugins);
1666 $PAGE->renderPage('pluginsadmin');
1667 exit;
1668 }
1669
1670 // Plugin administration form action
1671 if ($targetPage == Router::$PAGE_SAVE_PLUGINSADMIN) {
1672 try {
1673 if (isset($_POST['parameters_form'])) {
1674 unset($_POST['parameters_form']);
1675 foreach ($_POST as $param => $value) {
1676 $GLOBALS['plugins'][$param] = escape($value);
1677 }
1678 }
1679 else {
1680 $GLOBALS['config']['ENABLED_PLUGINS'] = save_plugin_config($_POST);
1681 }
1682 writeConfig($GLOBALS, isLoggedIn());
1683 }
1684 catch (Exception $e) {
1685 error_log(
1686 'ERROR while saving plugin configuration:.' . PHP_EOL .
1687 $e->getMessage()
1688 );
1689
1690 // TODO: do not handle exceptions/errors in JS.
59edea42 1691 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do='. Router::$PAGE_PLUGINSADMIN .'\';</script>';
dea0ba28
A		 1692 exit;
1693 }
1694 header('Location: ?do='. Router::$PAGE_PLUGINSADMIN);
1695 exit;
1696 }
1697
45034273 1698 // -------- Otherwise, simply display search form and links:
6fc14d53 1699 showLinkList($PAGE, $LINKSDB);
45034273
SS		 1700 exit;
1701}
1702
1703// -----------------------------------------------------------------------------------------------
1704// Process the import file form.
1705function importFile()
1706{
02ad8fb6 1707 if (!isLoggedIn()) { die('Not allowed.'); }
9f15ca9e 1708 $LINKSDB = new LinkDB(
9c8752a2 1709 $GLOBALS['config']['DATASTORE'],
02ad8fb6 1710 isLoggedIn(),
90e5bd65
A		 1711 $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
1712 $GLOBALS['redirector']
9f15ca9e 1713 );
45034273
SS		 1714 $filename=$_FILES['filetoupload']['name'];
1715 $filesize=$_FILES['filetoupload']['size'];
1716 $data=file_get_contents($_FILES['filetoupload']['tmp_name']);
ad6c27b7 1717 $private = (empty($_POST['private']) ? 0 : 1); // Should the links be imported as private?
1718 $overwrite = !empty($_POST['overwrite']) ; // Should the imported links overwrite existing ones?
45034273
SS		 1719 $import_count=0;
1720
1721 // Sniff file type:
1722 $type='unknown';
1723 if (startsWith($data,'<!DOCTYPE NETSCAPE-Bookmark-file-1>')) $type='netscape'; // Netscape bookmark file (aka Firefox).
1724
1725 // Then import the bookmarks.
1726 if ($type=='netscape')
1727 {
1728 // This is a standard Netscape-style bookmark file.
ad6c27b7 1729 // This format is supported by all browsers (except IE, of course), also Delicious, Diigo and others.
45034273
SS		 1730 foreach(explode('<DT>',$data) as $html) // explode is very fast
1731 {
1732 $link = array('linkdate'=>'','title'=>'','url'=>'','description'=>'','tags'=>'','private'=>0);
1733 $d = explode('<DD>',$html);
1734 if (startswith($d[0],'<A '))
1735 {
1736 $link['description'] = (isset($d[1]) ? html_entity_decode(trim($d[1]),ENT_QUOTES,'UTF-8') : ''); // Get description (optional)
1737 preg_match('!<A .*?>(.*?)</A>!i',$d[0],$matches); $link['title'] = (isset($matches[1]) ? trim($matches[1]) : ''); // Get title
1738 $link['title'] = html_entity_decode($link['title'],ENT_QUOTES,'UTF-8');
1739 preg_match_all('! ([A-Z_]+)=\"(.*?)"!i',$html,$matches,PREG_SET_ORDER); // Get all other attributes
1740 $raw_add_date=0;
1741 foreach($matches as $m)
1742 {
1743 $attr=$m[1]; $value=$m[2];
1744 if ($attr=='HREF') $link['url']=html_entity_decode($value,ENT_QUOTES,'UTF-8');
fc93ae1d
AA		 1745 elseif ($attr=='ADD_DATE')
1746 {
1747 $raw_add_date=intval($value);
1748 if ($raw_add_date>30000000000) $raw_add_date/=1000; //If larger than year 2920, then was likely stored in milliseconds instead of seconds
1749 }
45034273
SS		 1750 elseif ($attr=='PRIVATE') $link['private']=($value=='0'?0:1);
1751 elseif ($attr=='TAGS') $link['tags']=html_entity_decode(str_replace(',',' ',$value),ENT_QUOTES,'UTF-8');
1752 }
1753 if ($link['url']!='')
1754 {
1755 if ($private==1) $link['private']=1;
1756 $dblink = $LINKSDB->getLinkFromUrl($link['url']); // See if the link is already in database.
1757 if ($dblink==false)
1758 { // Link not in database, let's import it...
1759 if (empty($raw_add_date)) $raw_add_date=time(); // In case of shitty bookmark file with no ADD_DATE
1760
1761 // Make sure date/time is not already used by another link.
1762 // (Some bookmark files have several different links with the same ADD_DATE)
ad6c27b7 1763 // We increment date by 1 second until we find a date which is not used in DB.
45034273
SS		 1764 // (so that links that have the same date/time are more or less kept grouped by date, but do not conflict.)
1765 while (!empty($LINKSDB[date('Ymd_His',$raw_add_date)])) { $raw_add_date++; }// Yes, I know it's ugly.
1766 $link['linkdate']=date('Ymd_His',$raw_add_date);
1767 $LINKSDB[$link['linkdate']] = $link;
1768 $import_count++;
1769 }
ad6c27b7 1770 else // Link already present in database.
45034273
SS		 1771 {
1772 if ($overwrite)
1773 { // If overwrite is required, we import link data, except date/time.
1774 $link['linkdate']=$dblink['linkdate'];
1775 $LINKSDB[$link['linkdate']] = $link;
1776 $import_count++;
1777 }
1778 }
1779
1780 }
1781 }
1782 }
01e48f26 1783 $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']);
45034273 1784
fe16b01e 1785 echo '<script>alert("File '.json_encode($filename).' ('.$filesize.' bytes) was successfully processed: '.$import_count.' links imported.");document.location=\'?\';</script>';
45034273
SS		 1786 }
1787 else
1788 {
fe16b01e 1789 echo '<script>alert("File '.json_encode($filename).' ('.$filesize.' bytes) has an unknown file format. Nothing was imported.");document.location=\'?\';</script>';
45034273
SS		 1790 }
1791}
1792
528a6f8a
A		 1793/**
1794 * Template for the list of links (<div id="linklist">)
1795 * This function fills all the necessary fields in the $PAGE for the template 'linklist.html'
1796 *
1797 * @param pageBuilder $PAGE pageBuilder instance.
1798 * @param LinkDB $LINKSDB LinkDB instance.
1799 */
45034273
SS		 1800function buildLinkList($PAGE,$LINKSDB)
1801{
528a6f8a 1802 // Used in templates
c51fae92 1803 $searchtags = !empty($_GET['searchtags']) ? escape($_GET['searchtags']) : '';
528a6f8a 1804 $searchterm = !empty($_GET['searchterm']) ? escape($_GET['searchterm']) : '';
822bffce 1805
528a6f8a
A		 1806 // Smallhash filter
1807 if (! empty($_SERVER['QUERY_STRING'])
1808 && preg_match('/^[a-zA-Z0-9-_@]{6}($|&|#)/', $_SERVER['QUERY_STRING'])) {
1809 try {
1810 $linksToDisplay = $LINKSDB->filterHash($_SERVER['QUERY_STRING']);
1811 } catch (LinkNotFoundException $e) {
1812 $PAGE->render404($e->getMessage());
45034273
SS		 1813 exit;
1814 }
528a6f8a
A		 1815 } else {
1816 // Filter links according search parameters.
1817 $privateonly = !empty($_SESSION['privateonly']);
1818 $linksToDisplay = $LINKSDB->filterSearch($_GET, false, $privateonly);
45034273
SS		 1819 }
1820
1821 // ---- Handle paging.
822bffce
A		 1822 $keys = array();
1823 foreach ($linksToDisplay as $key => $value) {
1824 $keys[] = $key;
1825 }
45034273
SS		 1826
1827 // If there is only a single link, we change on-the-fly the title of the page.
822bffce
A		 1828 if (count($linksToDisplay) == 1) {
1829 $GLOBALS['pagetitle'] = $linksToDisplay[$keys[0]]['title'].' - '.$GLOBALS['title'];
1830 }
45034273
SS		 1831
1832 // Select articles according to paging.
822bffce
A		 1833 $pagecount = ceil(count($keys) / $_SESSION['LINKS_PER_PAGE']);
1834 $pagecount = $pagecount == 0 ? 1 : $pagecount;
1835 $page= empty($_GET['page']) ? 1 : intval($_GET['page']);
1836 $page = $page < 1 ? 1 : $page;
1837 $page = $page > $pagecount ? $pagecount : $page;
1838 // Start index.
1839 $i = ($page-1) * $_SESSION['LINKS_PER_PAGE'];
1840 $end = $i + $_SESSION['LINKS_PER_PAGE'];
1841 $linkDisp = array();
45034273
SS		 1842 while ($i<$end && $i<count($keys))
1843 {
1844 $link = $linksToDisplay[$keys[$i]];
90e5bd65 1845 $link['description'] = format_description($link['description'], $GLOBALS['redirector']);
822bffce
A		 1846 $classLi = ($i % 2) != 0 ? '' : 'publicLinkHightLight';
1847 $link['class'] = $link['private'] == 0 ? $classLi : 'private';
205a4277
V		 1848 $date = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $link['linkdate']);
1849 $link['timestamp'] = $date->getTimestamp();
822bffce 1850 $taglist = explode(' ', $link['tags']);
a5752e77 1851 uasort($taglist, 'strcasecmp');
822bffce 1852 $link['taglist'] = $taglist;
6fc14d53 1853 $link['shorturl'] = smallHash($link['linkdate']);
822bffce
A		 1854 // Check for both signs of a note: starting with ? and 7 chars long.
1855 if ($link['url'][0] === '?' &&
1856 strlen($link['url']) === 7) {
1857 $link['url'] = index_url($_SERVER) . $link['url'];
b47f515a 1858 }
d33c5d4c 1859
45034273
SS		 1860 $linkDisp[$keys[$i]] = $link;
1861 $i++;
1862 }
bb8f712d 1863
45034273 1864 // Compute paging navigation
c51fae92
A		 1865 $searchtagsUrl = empty($searchtags) ? '' : '&searchtags=' . urlencode($searchtags);
1866 $searchtermUrl = empty($searchterm) ? '' : '&searchterm=' . urlencode($searchterm);
822bffce
A		 1867 $previous_page_url = '';
1868 if ($i != count($keys)) {
c51fae92 1869 $previous_page_url = '?page=' . ($page+1) . $searchtermUrl . $searchtagsUrl;
822bffce
A		 1870 }
1871 $next_page_url='';
1872 if ($page>1) {
c51fae92 1873 $next_page_url = '?page=' . ($page-1) . $searchtermUrl . $searchtagsUrl;
822bffce 1874 }
45034273 1875
c51fae92 1876 $token = isLoggedIn() ? getToken() : '';
bb8f712d 1877
45034273 1878 // Fill all template fields.
6fc14d53
A		 1879 $data = array(
1880 'linkcount' => count($LINKSDB),
1881 'previous_page_url' => $previous_page_url,
1882 'next_page_url' => $next_page_url,
1883 'page_current' => $page,
1884 'page_max' => $pagecount,
1885 'result_count' => count($linksToDisplay),
c51fae92
A		 1886 'search_term' => $searchterm,
1887 'search_tags' => $searchtags,
6fc14d53
A		 1888 'redirector' => empty($GLOBALS['redirector']) ? '' : $GLOBALS['redirector'], // Optional redirector URL.
1889 'token' => $token,
1890 'links' => $linkDisp,
1891 'tags' => $LINKSDB->allTags(),
1892 );
18cca483
A		 1893 // FIXME! temporary fix - see #399.
1894 if (!empty($GLOBALS['pagetitle']) && count($linkDisp) == 1) {
1895 $data['pagetitle'] = $GLOBALS['pagetitle'];
1896 }
6fc14d53
A		 1897
1898 $pluginManager = PluginManager::getInstance();
1899 $pluginManager->executeHooks('render_linklist', $data, array('loggedin' => isLoggedIn()));
1900
1901 foreach ($data as $key => $value) {
1902 $PAGE->assign($key, $value);
1903 }
1904
45034273
SS		 1905 return;
1906}
1907
1908// Compute the thumbnail for a link.
bb8f712d 1909//
ad6c27b7 1910// With a link to the original URL.
45034273 1911// Understands various services (youtube.com...)
ad6c27b7 1912// Input: $url = URL for which the thumbnail must be found.
45034273
SS		 1913// $href = if provided, this URL will be followed instead of $url
1914// Returns an associative array with thumbnail attributes (src,href,width,height,style,alt)
1915// Some of them may be missing.
1916// Return an empty array if no thumbnail available.
1917function computeThumbnail($url,$href=false)
1918{
1919 if (!$GLOBALS['config']['ENABLE_THUMBNAILS']) return array();
1920 if ($href==false) $href=$url;
1921
1922 // For most hosts, the URL of the thumbnail can be easily deduced from the URL of the link.
ad6c27b7 1923 // (e.g. http://www.youtube.com/watch?v=spVypYk4kto ---> http://img.youtube.com/vi/spVypYk4kto/default.jpg )
45034273
SS		 1924 // ^^^^^^^^^^^ ^^^^^^^^^^^
1925 $domain = parse_url($url,PHP_URL_HOST);
1926 if ($domain=='youtube.com' || $domain=='www.youtube.com')
1927 {
1928 parse_str(parse_url($url,PHP_URL_QUERY), $params); // Extract video ID and get thumbnail
1a663a0f 1929 if (!empty($params['v'])) return array('src'=>'https://img.youtube.com/vi/'.$params['v'].'/default.jpg',
45034273
SS		 1930 'href'=>$href,'width'=>'120','height'=>'90','alt'=>'YouTube thumbnail');
1931 }
1932 if ($domain=='youtu.be') // Youtube short links
1933 {
1934 $path = parse_url($url,PHP_URL_PATH);
1a663a0f 1935 return array('src'=>'https://img.youtube.com/vi'.$path.'/default.jpg',
bb8f712d 1936 'href'=>$href,'width'=>'120','height'=>'90','alt'=>'YouTube thumbnail');
45034273
SS		 1937 }
1938 if ($domain=='pix.toile-libre.org') // pix.toile-libre.org image hosting
1939 {
1940 parse_str(parse_url($url,PHP_URL_QUERY), $params); // Extract image filename.
1941 if (!empty($params) && !empty($params['img'])) return array('src'=>'http://pix.toile-libre.org/upload/thumb/'.urlencode($params['img']),
bb8f712d
KT		 1942 'href'=>$href,'style'=>'max-width:120px; max-height:150px','alt'=>'pix.toile-libre.org thumbnail');
1943 }
1944
45034273
SS		 1945 if ($domain=='imgur.com')
1946 {
1947 $path = parse_url($url,PHP_URL_PATH);
1948 if (startsWith($path,'/a/')) return array(); // Thumbnails for albums are not available.
1a663a0f 1949 if (startsWith($path,'/r/')) return array('src'=>'https://i.imgur.com/'.basename($path).'s.jpg',
45034273 1950 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
1a663a0f 1951 if (startsWith($path,'/gallery/')) return array('src'=>'https://i.imgur.com'.substr($path,8).'s.jpg',
45034273
SS		 1952 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
1953
1a663a0f 1954 if (substr_count($path,'/')==1) return array('src'=>'https://i.imgur.com/'.substr($path,1).'s.jpg',
45034273
SS		 1955 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
1956 }
1957 if ($domain=='i.imgur.com')
1958 {
1959 $pi = pathinfo(parse_url($url,PHP_URL_PATH));
1a663a0f 1960 if (!empty($pi['filename'])) return array('src'=>'https://i.imgur.com/'.$pi['filename'].'s.jpg',
45034273
SS		 1961 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
1962 }
1963 if ($domain=='dailymotion.com' || $domain=='www.dailymotion.com')
1964 {
1965 if (strpos($url,'dailymotion.com/video/')!==false)
1966 {
1967 $thumburl=str_replace('dailymotion.com/video/','dailymotion.com/thumbnail/video/',$url);
1968 return array('src'=>$thumburl,
1969 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'DailyMotion thumbnail');
1970 }
1971 }
1972 if (endsWith($domain,'.imageshack.us'))
1973 {
1974 $ext=strtolower(pathinfo($url,PATHINFO_EXTENSION));
1975 if ($ext=='jpg' || $ext=='jpeg' || $ext=='png' || $ext=='gif')
1976 {
1977 $thumburl = substr($url,0,strlen($url)-strlen($ext)).'th.'.$ext;
1978 return array('src'=>$thumburl,
1979 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'imageshack.us thumbnail');
1980 }
1981 }
1982
1983 // Some other hosts are SLOW AS HELL and usually require an extra HTTP request to get the thumbnail URL.
1984 // So we deport the thumbnail generation in order not to slow down page generation
1985 // (and we also cache the thumbnail)
1986
1987 if (!$GLOBALS['config']['ENABLE_LOCALCACHE']) return array(); // If local cache is disabled, no thumbnails for services which require the use a local cache.
1988
1989 if ($domain=='flickr.com' || endsWith($domain,'.flickr.com')
1990 || $domain=='vimeo.com'
1991 || $domain=='ted.com' || endsWith($domain,'.ted.com')
1992 || $domain=='xkcd.com' || endsWith($domain,'.xkcd.com')
1993 )
1994 {
1995 if ($domain=='vimeo.com')
ad6c27b7 1996 { // Make sure this vimeo URL points to a video (/xxx... where xxx is numeric)
45034273
SS		 1997 $path = parse_url($url,PHP_URL_PATH);
1998 if (!preg_match('!/\d+.+?!',$path)) return array(); // This is not a single video URL.
1999 }
2000 if ($domain=='xkcd.com' || endsWith($domain,'.xkcd.com'))
ad6c27b7 2001 { // Make sure this URL points to a single comic (/xxx... where xxx is numeric)
45034273
SS		 2002 $path = parse_url($url,PHP_URL_PATH);
2003 if (!preg_match('!/\d+.+?!',$path)) return array();
2004 }
2005 if ($domain=='ted.com' || endsWith($domain,'.ted.com'))
ad6c27b7 2006 { // Make sure this TED URL points to a video (/talks/...)
45034273
SS		 2007 $path = parse_url($url,PHP_URL_PATH);
2008 if ("/talks/" !== substr($path,0,7)) return array(); // This is not a single video URL.
2009 }
2010 $sign = hash_hmac('sha256', $url, $GLOBALS['salt']); // We use the salt to sign data (it's random, secret, and specific to each installation)
482d67bd 2011 return array('src'=>index_url($_SERVER).'?do=genthumbnail&hmac='.$sign.'&url='.urlencode($url),
45034273
SS		 2012 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'thumbnail');
2013 }
2014
2015 // For all other, we try to make a thumbnail of links ending with .jpg/jpeg/png/gif
2016 // Technically speaking, we should download ALL links and check their Content-Type to see if they are images.
2017 // But using the extension will do.
2018 $ext=strtolower(pathinfo($url,PATHINFO_EXTENSION));
2019 if ($ext=='jpg' || $ext=='jpeg' || $ext=='png' || $ext=='gif')
2020 {
2021 $sign = hash_hmac('sha256', $url, $GLOBALS['salt']); // We use the salt to sign data (it's random, secret, and specific to each installation)
482d67bd 2022 return array('src'=>index_url($_SERVER).'?do=genthumbnail&hmac='.$sign.'&url='.urlencode($url),
bb8f712d 2023 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'thumbnail');
45034273
SS		 2024 }
2025 return array(); // No thumbnail.
2026
2027}
2028
2029
2030// Returns the HTML code to display a thumbnail for a link
2031// with a link to the original URL.
2032// Understands various services (youtube.com...)
ad6c27b7 2033// Input: $url = URL for which the thumbnail must be found.
45034273
SS		 2034// $href = if provided, this URL will be followed instead of $url
2035// Returns '' if no thumbnail available.
2036function thumbnail($url,$href=false)
2037{
2038 $t = computeThumbnail($url,$href);
2039 if (count($t)==0) return ''; // Empty array = no thumbnail for this URL.
bb8f712d 2040
5f85fcd8
A		 2041 $html='<a href="'.escape($t['href']).'"><img src="'.escape($t['src']).'"';
2042 if (!empty($t['width'])) $html.=' width="'.escape($t['width']).'"';
2043 if (!empty($t['height'])) $html.=' height="'.escape($t['height']).'"';
2044 if (!empty($t['style'])) $html.=' style="'.escape($t['style']).'"';
2045 if (!empty($t['alt'])) $html.=' alt="'.escape($t['alt']).'"';
45034273
SS		 2046 $html.='></a>';
2047 return $html;
2048}
2049
45034273
SS		 2050// Returns the HTML code to display a thumbnail for a link
2051// for the picture wall (using lazy image loading)
2052// Understands various services (youtube.com...)
ad6c27b7 2053// Input: $url = URL for which the thumbnail must be found.
45034273
SS		 2054// $href = if provided, this URL will be followed instead of $url
2055// Returns '' if no thumbnail available.
2056function lazyThumbnail($url,$href=false)
2057{
bb8f712d 2058 $t = computeThumbnail($url,$href);
45034273
SS		 2059 if (count($t)==0) return ''; // Empty array = no thumbnail for this URL.
2060
5f85fcd8 2061 $html='<a href="'.escape($t['href']).'">';
bb8f712d 2062
34047d23 2063 // Lazy image
5f85fcd8 2064 $html.='<img class="b-lazy" src="#" data-src="'.escape($t['src']).'"';
858c5c2b 2065
5f85fcd8
A		 2066 if (!empty($t['width'])) $html.=' width="'.escape($t['width']).'"';
2067 if (!empty($t['height'])) $html.=' height="'.escape($t['height']).'"';
2068 if (!empty($t['style'])) $html.=' style="'.escape($t['style']).'"';
2069 if (!empty($t['alt'])) $html.=' alt="'.escape($t['alt']).'"';
45034273 2070 $html.='>';
bb8f712d 2071
ad6c27b7 2072 // No-JavaScript fallback.
5f85fcd8
A		 2073 $html.='<noscript><img src="'.escape($t['src']).'"';
2074 if (!empty($t['width'])) $html.=' width="'.escape($t['width']).'"';
2075 if (!empty($t['height'])) $html.=' height="'.escape($t['height']).'"';
2076 if (!empty($t['style'])) $html.=' style="'.escape($t['style']).'"';
2077 if (!empty($t['alt'])) $html.=' alt="'.escape($t['alt']).'"';
45034273 2078 $html.='></noscript></a>';
bb8f712d 2079
45034273
SS		 2080 return $html;
2081}
2082
2083
2084// -----------------------------------------------------------------------------------------------
2085// Installation
2086// This function should NEVER be called if the file data/config.php exists.
2087function install()
2088{
2089 // On free.fr host, make sure the /sessions directory exists, otherwise login will not work.
f6a6ca0a 2090 if (endsWith($_SERVER['HTTP_HOST'],'.free.fr') && !is_dir($_SERVER['DOCUMENT_ROOT'].'/sessions')) mkdir($_SERVER['DOCUMENT_ROOT'].'/sessions',0705);
45034273 2091
f37664a2
SS		 2092
2093 // This part makes sure sessions works correctly.
2094 // (Because on some hosts, session.save_path may not be set correctly,
2095 // or we may not have write access to it.)
2096 if (isset($_GET['test_session']) && ( !isset($_SESSION) || !isset($_SESSION['session_tested']) || $_SESSION['session_tested']!='Working'))
2097 { // Step 2: Check if data in session is correct.
2098 echo '<pre>Sessions do not seem to work correctly on your server.<br>';
2099 echo 'Make sure the variable session.save_path is set correctly in your php config, and that you have write access to it.<br>';
01ec1791 2100 echo 'It currently points to '.session_save_path().'<br>';
2101 echo 'Check that the hostname used to access Shaarli contains a dot. On some browsers, accessing your server via a hostname like \'localhost\' or any custom hostname without a dot causes cookie storage to fail. We recommend accessing your server via it\'s IP address or Fully Qualified Domain Name.<br>';
2102 echo '<br><a href="?">Click to try again.</a></pre>';
f37664a2
SS		 2103 die;
2104 }
2105 if (!isset($_SESSION['session_tested']))
2106 { // Step 1 : Try to store data in session and reload page.
2107 $_SESSION['session_tested'] = 'Working'; // Try to set a variable in session.
482d67bd 2108 header('Location: '.index_url($_SERVER).'?test_session'); // Redirect to check stored data.
f37664a2
SS		 2109 }
2110 if (isset($_GET['test_session']))
ad6c27b7 2111 { // Step 3: Sessions are OK. Remove test parameter from URL.
482d67bd 2112 header('Location: '.index_url($_SERVER));
f37664a2
SS		 2113 }
2114
2115
45034273
SS		 2116 if (!empty($_POST['setlogin']) && !empty($_POST['setpassword']))
2117 {
2118 $tz = 'UTC';
d1e2f8e5
V		 2119 if (!empty($_POST['continent']) && !empty($_POST['city'])) {
2120 if (isTimeZoneValid($_POST['continent'], $_POST['city'])) {
45034273 2121 $tz = $_POST['continent'].'/'.$_POST['city'];
d1e2f8e5
V		 2122 }
2123 }
45034273
SS		 2124 $GLOBALS['timezone'] = $tz;
2125 // Everything is ok, let's create config file.
2126 $GLOBALS['login'] = $_POST['setlogin'];
2127 $GLOBALS['salt'] = sha1(uniqid('',true).'_'.mt_rand()); // Salt renders rainbow-tables attacks useless.
2128 $GLOBALS['hash'] = sha1($_POST['setpassword'].$GLOBALS['login'].$GLOBALS['salt']);
482d67bd 2129 $GLOBALS['title'] = (empty($_POST['title']) ? 'Shared links on '.escape(index_url($_SERVER)) : $_POST['title'] );
329e0768 2130 $GLOBALS['config']['ENABLE_UPDATECHECK'] = !empty($_POST['updateCheck']);
dd484b90
A		 2131 try {
2132 writeConfig($GLOBALS, isLoggedIn());
2133 }
2134 catch(Exception $e) {
2135 error_log(
2136 'ERROR while writing config file after installation.' . PHP_EOL .
2137 $e->getMessage()
2138 );
2139
2140 // TODO: do not handle exceptions/errors in JS.
2141 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?\';</script>';
2142 exit;
2143 }
fe16b01e 2144 echo '<script>alert("Shaarli is now configured. Please enter your login/password and start shaaring your links!");document.location=\'?do=login\';</script>';
45034273
SS		 2145 exit;
2146 }
2147
2148 // Display config form:
d1e2f8e5
V		 2149 list($timezone_form, $timezone_js) = generateTimeZoneForm();
2150 $timezone_html = '';
2151 if ($timezone_form != '') {
2152 $timezone_html = '<tr><td><b>Timezone:</b></td><td>'.$timezone_form.'</td></tr>';
2153 }
bb8f712d 2154
45034273
SS		 2155 $PAGE = new pageBuilder;
2156 $PAGE->assign('timezone_html',$timezone_html);
2157 $PAGE->assign('timezone_js',$timezone_js);
2158 $PAGE->renderPage('install');
2159 exit;
2160}
2161
ad6c27b7 2162/* Because some f*cking services like flickr require an extra HTTP request to get the thumbnail URL,
45034273 2163 I have deported the thumbnail URL code generation here, otherwise this would slow down page generation.
ad6c27b7 2164 The following function takes the URL a link (e.g. a flickr page) and return the proper thumbnail.
2165 This function is called by passing the URL:
45034273 2166 http://mywebsite.com/shaarli/?do=genthumbnail&hmac=[HMAC]&url=[URL]
ad6c27b7 2167 [URL] is the URL of the link (e.g. a flickr page)
45034273
SS		 2168 [HMAC] is the signature for the [URL] (so that these URL cannot be forged).
2169 The function below will fetch the image from the webservice and store it in the cache.
2170*/
2171function genThumbnail()
2172{
2173 // Make sure the parameters in the URL were generated by us.
2174 $sign = hash_hmac('sha256', $_GET['url'], $GLOBALS['salt']);
ad6c27b7 2175 if ($sign!=$_GET['hmac']) die('Naughty boy!');
45034273
SS		 2176
2177 // Let's see if we don't already have the image for this URL in the cache.
2178 $thumbname=hash('sha1',$_GET['url']).'.jpg';
2179 if (is_file($GLOBALS['config']['CACHEDIR'].'/'.$thumbname))
2180 { // We have the thumbnail, just serve it:
2181 header('Content-Type: image/jpeg');
2182 echo file_get_contents($GLOBALS['config']['CACHEDIR'].'/'.$thumbname);
2183 return;
2184 }
2185 // We may also serve a blank image (if service did not respond)
2186 $blankname=hash('sha1',$_GET['url']).'.gif';
2187 if (is_file($GLOBALS['config']['CACHEDIR'].'/'.$blankname))
2188 {
2189 header('Content-Type: image/gif');
2190 echo file_get_contents($GLOBALS['config']['CACHEDIR'].'/'.$blankname);
2191 return;
2192 }
2193
2194 // Otherwise, generate the thumbnail.
2195 $url = $_GET['url'];
2196 $domain = parse_url($url,PHP_URL_HOST);
2197
2198 if ($domain=='flickr.com' || endsWith($domain,'.flickr.com'))
2199 {
ad6c27b7 2200 // Crude replacement to handle new flickr domain policy (They prefer www. now)
45034273
SS		 2201 $url = str_replace('http://flickr.com/','http://www.flickr.com/',$url);
2202
2203 // Is this a link to an image, or to a flickr page ?
2204 $imageurl='';
2205 if (endswith(parse_url($url,PHP_URL_PATH),'.jpg'))
ad6c27b7 2206 { // This is a direct link to an image. e.g. http://farm1.staticflickr.com/5/5921913_ac83ed27bd_o.jpg
45034273
SS		 2207 preg_match('!(http://farm\d+\.staticflickr\.com/\d+/\d+_\w+_)\w.jpg!',$url,$matches);
2208 if (!empty($matches[1])) $imageurl=$matches[1].'m.jpg';
2209 }
ad6c27b7 2210 else // This is a flickr page (html)
45034273 2211 {
451314eb 2212 // Get the flickr html page.
1557cefb 2213 list($headers, $content) = get_http_response($url, 20);
451314eb 2214 if (strpos($headers[0], '200 OK') !== false)
45034273 2215 {
ad6c27b7 2216 // flickr now nicely provides the URL of the thumbnail in each flickr page.
1557cefb 2217 preg_match('!<link rel=\"image_src\" href=\"(.+?)\"!', $content, $matches);
45034273
SS		 2218 if (!empty($matches[1])) $imageurl=$matches[1];
2219
2220 // In albums (and some other pages), the link rel="image_src" is not provided,
2221 // but flickr provides:
2222 // <meta property="og:image" content="http://farm4.staticflickr.com/3398/3239339068_25d13535ff_z.jpg" />
2223 if ($imageurl=='')
2224 {
1557cefb 2225 preg_match('!<meta property=\"og:image\" content=\"(.+?)\"!', $content, $matches);
45034273
SS		 2226 if (!empty($matches[1])) $imageurl=$matches[1];
2227 }
2228 }
2229 }
2230
2231 if ($imageurl!='')
2232 { // Let's download the image.
451314eb 2233 // Image is 240x120, so 10 seconds to download should be enough.
1557cefb 2234 list($headers, $content) = get_http_response($imageurl, 10);
451314eb 2235 if (strpos($headers[0], '200 OK') !== false) {
1557cefb
A		 2236 // Save image to cache.
2237 file_put_contents($GLOBALS['config']['CACHEDIR'].'/' . $thumbname, $content);
45034273 2238 header('Content-Type: image/jpeg');
1557cefb 2239 echo $content;
45034273
SS		 2240 return;
2241 }
2242 }
2243 }
2244
2245 elseif ($domain=='vimeo.com' )
2246 {
2247 // This is more complex: we have to perform a HTTP request, then parse the result.
ad6c27b7 2248 // Maybe we should deport this to JavaScript ? Example: http://stackoverflow.com/questions/1361149/get-img-thumbnails-from-vimeo/4285098#4285098
45034273 2249 $vid = substr(parse_url($url,PHP_URL_PATH),1);
1557cefb 2250 list($headers, $content) = get_http_response('https://vimeo.com/api/v2/video/'.escape($vid).'.php', 5);
451314eb 2251 if (strpos($headers[0], '200 OK') !== false) {
1557cefb 2252 $t = unserialize($content);
45034273
SS		 2253 $imageurl = $t[0]['thumbnail_medium'];
2254 // Then we download the image and serve it to our client.
1557cefb 2255 list($headers, $content) = get_http_response($imageurl, 10);
451314eb 2256 if (strpos($headers[0], '200 OK') !== false) {
1557cefb
A		 2257 // Save image to cache.
2258 file_put_contents($GLOBALS['config']['CACHEDIR'] . '/' . $thumbname, $content);
45034273 2259 header('Content-Type: image/jpeg');
1557cefb 2260 echo $content;
45034273
SS		 2261 return;
2262 }
2263 }
2264 }
2265
2266 elseif ($domain=='ted.com' || endsWith($domain,'.ted.com'))
2267 {
2268 // The thumbnail for TED talks is located in the <link rel="image_src" [...]> tag on that page
2269 // http://www.ted.com/talks/mikko_hypponen_fighting_viruses_defending_the_net.html
2270 // <link rel="image_src" href="http://images.ted.com/images/ted/28bced335898ba54d4441809c5b1112ffaf36781_389x292.jpg" />
1557cefb 2271 list($headers, $content) = get_http_response($url, 5);
451314eb 2272 if (strpos($headers[0], '200 OK') !== false) {
45034273 2273 // Extract the link to the thumbnail
1557cefb 2274 preg_match('!link rel="image_src" href="(http://images.ted.com/images/ted/.+_\d+x\d+\.jpg)"!', $content, $matches);
45034273
SS		 2275 if (!empty($matches[1]))
2276 { // Let's download the image.
2277 $imageurl=$matches[1];
451314eb 2278 // No control on image size, so wait long enough
1557cefb 2279 list($headers, $content) = get_http_response($imageurl, 20);
451314eb 2280 if (strpos($headers[0], '200 OK') !== false) {
45034273 2281 $filepath=$GLOBALS['config']['CACHEDIR'].'/'.$thumbname;
1557cefb 2282 file_put_contents($filepath, $content); // Save image to cache.
45034273
SS		 2283 if (resizeImage($filepath))
2284 {
2285 header('Content-Type: image/jpeg');
2286 echo file_get_contents($filepath);
2287 return;
2288 }
2289 }
2290 }
2291 }
2292 }
bb8f712d 2293
45034273
SS		 2294 elseif ($domain=='xkcd.com' || endsWith($domain,'.xkcd.com'))
2295 {
2296 // There is no thumbnail available for xkcd comics, so download the whole image and resize it.
2297 // http://xkcd.com/327/
2298 // <img src="http://imgs.xkcd.com/comics/exploits_of_a_mom.png" title="<BLABLA>" alt="<BLABLA>" />
1557cefb 2299 list($headers, $content) = get_http_response($url, 5);
451314eb 2300 if (strpos($headers[0], '200 OK') !== false) {
45034273 2301 // Extract the link to the thumbnail
1557cefb 2302 preg_match('!<img src="(http://imgs.xkcd.com/comics/.*)" title="[^s]!', $content, $matches);
45034273
SS		 2303 if (!empty($matches[1]))
2304 { // Let's download the image.
2305 $imageurl=$matches[1];
451314eb 2306 // No control on image size, so wait long enough
1557cefb 2307 list($headers, $content) = get_http_response($imageurl, 20);
451314eb 2308 if (strpos($headers[0], '200 OK') !== false) {
45034273 2309 $filepath=$GLOBALS['config']['CACHEDIR'].'/'.$thumbname;
1557cefb
A		 2310 // Save image to cache.
2311 file_put_contents($filepath, $content);
45034273
SS		 2312 if (resizeImage($filepath))
2313 {
2314 header('Content-Type: image/jpeg');
2315 echo file_get_contents($filepath);
2316 return;
2317 }
2318 }
2319 }
2320 }
bb8f712d 2321 }
45034273
SS		 2322
2323 else
2324 {
2325 // For all other domains, we try to download the image and make a thumbnail.
451314eb 2326 // We allow 30 seconds max to download (and downloads are limited to 4 Mb)
1557cefb 2327 list($headers, $content) = get_http_response($url, 30);
451314eb 2328 if (strpos($headers[0], '200 OK') !== false) {
45034273 2329 $filepath=$GLOBALS['config']['CACHEDIR'].'/'.$thumbname;
1557cefb
A		 2330 // Save image to cache.
2331 file_put_contents($filepath, $content);
45034273
SS		 2332 if (resizeImage($filepath))
2333 {
2334 header('Content-Type: image/jpeg');
2335 echo file_get_contents($filepath);
2336 return;
2337 }
2338 }
2339 }
2340
2341
2342 // Otherwise, return an empty image (8x8 transparent gif)
2343 $blankgif = base64_decode('R0lGODlhCAAIAIAAAP///////yH5BAEKAAEALAAAAAAIAAgAAAIHjI+py+1dAAA7');
2344 file_put_contents($GLOBALS['config']['CACHEDIR'].'/'.$blankname,$blankgif); // Also put something in cache so that this URL is not requested twice.
2345 header('Content-Type: image/gif');
2346 echo $blankgif;
2347}
2348
2349// Make a thumbnail of the image (to width: 120 pixels)
2350// Returns true if success, false otherwise.
2351function resizeImage($filepath)
2352{
2353 if (!function_exists('imagecreatefromjpeg')) return false; // GD not present: no thumbnail possible.
2354
2355 // Trick: some stupid people rename GIF as JPEG... or else.
2356 // So we really try to open each image type whatever the extension is.
2357 $header=file_get_contents($filepath,false,NULL,0,256); // Read first 256 bytes and try to sniff file type.
2358 $im=false;
2359 $i=strpos($header,'GIF8'); if (($i!==false) && ($i==0)) $im = imagecreatefromgif($filepath); // Well this is crude, but it should be enough.
2360 $i=strpos($header,'PNG'); if (($i!==false) && ($i==1)) $im = imagecreatefrompng($filepath);
2361 $i=strpos($header,'JFIF'); if ($i!==false) $im = imagecreatefromjpeg($filepath);
2362 if (!$im) return false; // Unable to open image (corrupted or not an image)
2363 $w = imagesx($im);
2364 $h = imagesy($im);
2365 $ystart = 0; $yheight=$h;
2366 if ($h>$w) { $ystart= ($h/2)-($w/2); $yheight=$w/2; }
2367 $nw = 120; // Desired width
2368 $nh = min(floor(($h*$nw)/$w),120); // Compute new width/height, but maximum 120 pixels height.
2369 // Resize image:
2370 $im2 = imagecreatetruecolor($nw,$nh);
2371 imagecopyresampled($im2, $im, 0, 0, 0, $ystart, $nw, $nh, $w, $yheight);
2372 imageinterlace($im2,true); // For progressive JPEG.
2373 $tempname=$filepath.'_TEMP.jpg';
2374 imagejpeg($im2, $tempname, 90);
2375 imagedestroy($im);
2376 imagedestroy($im2);
9e820906 2377 unlink($filepath);
45034273
SS		 2378 rename($tempname,$filepath); // Overwrite original picture with thumbnail.
2379 return true;
2380}
2381
45034273 2382if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=genthumbnail')) { genThumbnail(); exit; } // Thumbnail generation/cache does not need the link database.
45034273 2383if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=dailyrss')) { showDailyRSS(); exit; }
45034273
SS		 2384if (!isset($_SESSION['LINKS_PER_PAGE'])) $_SESSION['LINKS_PER_PAGE']=$GLOBALS['config']['LINKS_PER_PAGE'];
2385renderPage();
03545ef6 2386?>
The personal, minimalist, super-fast, database free, bookmarking service - community repo