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45034273 1<?php
49e2b35b 2/**
729d2671 3 * Shaarli v0.6.3 - Shaare your links...
49e2b35b
V		 4 *
5 * The personal, minimalist, super-fast, no-database Delicious clone.
6 *
7 * Friendly fork by the Shaarli community:
8 * - https://github.com/shaarli/Shaarli
9 *
10 * Original project by sebsauvage.net:
11 * - http://sebsauvage.net/wiki/doku.php?id=php:shaarli
12 * - https://github.com/sebsauvage/Shaarli
13 *
14 * Licence: http://www.opensource.org/licenses/zlib-license.php
15 *
16 * Requires: PHP 5.3.x
17 */
afd7b77b
V		 18
19// Set 'UTC' as the default timezone if it is not defined in php.ini
20// See http://php.net/manual/en/datetime.configuration.php#ini.date.timezone
21if (date_default_timezone_get() == '') {
22 date_default_timezone_set('UTC');
23}
cb49ab94 24
28bb2b74
V		 25/* -----------------------------------------------------------------------------
26 * Hardcoded parameters
27 * You should not touch any code below (or at your own risks!)
28 * (These parameters can be overwritten by editing the file /data/config.php)
29 * -----------------------------------------------------------------------------
30 */
31
32/*
33 * Shaarli directories & configuration files
34 */
35// Data subdirectory
36$GLOBALS['config']['DATADIR'] = 'data';
37
38// Main configuration file
39$GLOBALS['config']['CONFIG_FILE'] = $GLOBALS['config']['DATADIR'].'/config.php';
40
41// Link datastore
42$GLOBALS['config']['DATASTORE'] = $GLOBALS['config']['DATADIR'].'/datastore.php';
43
44// Banned IPs
45$GLOBALS['config']['IPBANS_FILENAME'] = $GLOBALS['config']['DATADIR'].'/ipbans.php';
46
510377d2
A		 47// Processed updates file.
48$GLOBALS['config']['UPDATES_FILE'] = $GLOBALS['config']['DATADIR'].'/updates.txt';
49
2e28269b
V		 50// Access log
51$GLOBALS['config']['LOG_FILE'] = $GLOBALS['config']['DATADIR'].'/log.txt';
52
28bb2b74
V		 53// For updates check of Shaarli
54$GLOBALS['config']['UPDATECHECK_FILENAME'] = $GLOBALS['config']['DATADIR'].'/lastupdatecheck.txt';
55
7c873f1c
A		 56// Set ENABLE_UPDATECHECK to disabled by default.
57$GLOBALS['config']['ENABLE_UPDATECHECK'] = false;
58
28bb2b74
V		 59// RainTPL cache directory (keep the trailing slash!)
60$GLOBALS['config']['RAINTPL_TMP'] = 'tmp/';
61// Raintpl template directory (keep the trailing slash!)
62$GLOBALS['config']['RAINTPL_TPL'] = 'tpl/';
63
2e28269b 64// Thumbnail cache directory
28bb2b74
V		 65$GLOBALS['config']['CACHEDIR'] = 'cache';
66
67// Atom & RSS feed cache directory
68$GLOBALS['config']['PAGECACHE'] = 'pagecache';
69
28bb2b74
V		 70/*
71 * Global configuration
72 */
73// Ban IP after this many failures
74$GLOBALS['config']['BAN_AFTER'] = 4;
75// Ban duration for IP address after login failures (in seconds)
76$GLOBALS['config']['BAN_DURATION'] = 1800;
77
78// Feed options
79// Enable RSS permalinks by default.
80// This corresponds to the default behavior of shaarli before this was added as an option.
81$GLOBALS['config']['ENABLE_RSS_PERMALINKS'] = true;
82// If true, an extra "ATOM feed" button will be displayed in the toolbar
83$GLOBALS['config']['SHOW_ATOM'] = false;
84
85// Link display options
caee7ff9 86$GLOBALS['config']['HIDE_PUBLIC_LINKS'] = false;
28bb2b74
V		 87$GLOBALS['config']['HIDE_TIMESTAMPS'] = false;
88$GLOBALS['config']['LINKS_PER_PAGE'] = 20;
89
90// Open Shaarli (true): anyone can add/edit/delete links without having to login
91$GLOBALS['config']['OPEN_SHAARLI'] = false;
92
93// Thumbnails
94// Display thumbnails in links
95$GLOBALS['config']['ENABLE_THUMBNAILS'] = true;
96// Store thumbnails in a local cache
97$GLOBALS['config']['ENABLE_LOCALCACHE'] = true;
98
99// Update check frequency for Shaarli. 86400 seconds=24 hours
4407b45f
V		 100$GLOBALS['config']['UPDATECHECK_BRANCH'] = 'stable';
101$GLOBALS['config']['UPDATECHECK_INTERVAL'] = 86400;
28bb2b74
V		 102
103
104/*
105 * Plugin configuration
106 *
107 * Warning: order matters!
108 *
109 * These settings may be be overriden in:
110 * - data/config.php
111 * - each plugin's configuration file
112 */
6fc14d53
A		 113//$GLOBALS['config']['ENABLED_PLUGINS'] = array(
114// 'qrcode', 'archiveorg', 'readityourself', 'demo_plugin', 'playvideos',
115// 'wallabag', 'markdown', 'addlink_toolbar',
116//);
6fc14d53
A		 117$GLOBALS['config']['ENABLED_PLUGINS'] = array('qrcode');
118
091e2d13
A		 119// Initialize plugin parameters array.
120$GLOBALS['plugins'] = array();
28bb2b74
V		 121
122// PubSubHubbub support. Put an empty string to disable, or put your hub url here to enable.
123$GLOBALS['config']['PUBSUBHUB_URL'] = '';
124
125/*
126 * PHP configuration
127 */
729d2671 128define('shaarli_version', '0.6.3');
28bb2b74 129
ae00595b
CH		 130// http://server.com/x/shaarli --> /shaarli/
131define('WEB_PATH', substr($_SERVER["REQUEST_URI"], 0, 1+strrpos($_SERVER["REQUEST_URI"], '/', 0)));
45034273 132
28bb2b74
V		 133// High execution time in case of problematic imports/exports.
134ini_set('max_input_time','60');
135
136// Try to set max upload file size and read
137ini_set('memory_limit', '128M');
45034273
SS		 138ini_set('post_max_size', '16M');
139ini_set('upload_max_filesize', '16M');
45034273 140
28bb2b74
V		 141// See all error except warnings
142error_reporting(E_ALL^E_WARNING);
143// See all errors (for debugging only)
144//error_reporting(-1);
145
146/*
147 * User configuration
148 */
50c9a12e
V		 149if (is_file($GLOBALS['config']['CONFIG_FILE'])) {
150 require_once $GLOBALS['config']['CONFIG_FILE'];
151}
152
ca74886f 153// Shaarli library
2e28269b 154require_once 'application/ApplicationUtils.php';
01e48f26
V		 155require_once 'application/Cache.php';
156require_once 'application/CachedPage.php';
2e28269b 157require_once 'application/FileUtils.php';
451314eb 158require_once 'application/HttpUtils.php';
ca74886f 159require_once 'application/LinkDB.php';
822bffce 160require_once 'application/LinkFilter.php';
1557cefb 161require_once 'application/LinkUtils.php';
d1e2f8e5 162require_once 'application/TimeZone.php';
d9d776af 163require_once 'application/Url.php';
ca74886f 164require_once 'application/Utils.php';
dd484b90 165require_once 'application/Config.php';
6fc14d53
A		 166require_once 'application/PluginManager.php';
167require_once 'application/Router.php';
510377d2 168require_once 'application/Updater.php';
ca74886f 169
d1e2f8e5
V		 170// Ensure the PHP version is supported
171try {
c9cf2715 172 ApplicationUtils::checkPHPVersion('5.3', PHP_VERSION);
2e28269b 173} catch(Exception $exc) {
d1e2f8e5 174 header('Content-Type: text/plain; charset=utf-8');
2e28269b 175 echo $exc->getMessage();
d1e2f8e5
V		 176 exit;
177}
178
06b6660a
A		 179// Force cookie path (but do not change lifetime)
180$cookie = session_get_cookie_params();
181$cookiedir = '';
182if (dirname($_SERVER['SCRIPT_NAME']) != '/') {
183 $cookiedir = dirname($_SERVER["SCRIPT_NAME"]).'/';
184}
185// Set default cookie expiration and path.
186session_set_cookie_params($cookie['lifetime'], $cookiedir, $_SERVER['SERVER_NAME']);
187// Set session parameters on server side.
188// If the user does not access any page within this time, his/her session is considered expired.
189define('INACTIVITY_TIMEOUT', 3600); // in seconds.
190// Use cookies to store session.
191ini_set('session.use_cookies', 1);
192// Force cookies for session (phpsessionID forbidden in URL).
193ini_set('session.use_only_cookies', 1);
194// Prevent PHP form using sessionID in URL if cookies are disabled.
195ini_set('session.use_trans_sid', false);
196
06b6660a
A		 197session_name('shaarli');
198// Start session if needed (Some server auto-start sessions).
199if (session_id() == '') {
200 session_start();
201}
202
68bc2135
V		 203// Regenerate session ID if invalid or not defined in cookie.
204if (isset($_COOKIE['shaarli']) && !is_session_id_valid($_COOKIE['shaarli'])) {
205 session_regenerate_id(true);
206 $_COOKIE['shaarli'] = session_id();
207}
208
45034273 209include "inc/rain.tpl.class.php"; //include Rain TPL
25f5c59d 210raintpl::$tpl_dir = $GLOBALS['config']['RAINTPL_TPL']; // template directory
25f5c59d 211raintpl::$cache_dir = $GLOBALS['config']['RAINTPL_TMP']; // cache directory
45034273 212
6fc14d53
A		 213$pluginManager = PluginManager::getInstance();
214$pluginManager->load($GLOBALS['config']['ENABLED_PLUGINS']);
215
45034273
SS		 216ob_start(); // Output buffering for the page cache.
217
218
219// In case stupid admin has left magic_quotes enabled in php.ini:
220if (get_magic_quotes_gpc())
221{
222 function stripslashes_deep($value) { $value = is_array($value) ? array_map('stripslashes_deep', $value) : stripslashes($value); return $value; }
223 $_POST = array_map('stripslashes_deep', $_POST);
224 $_GET = array_map('stripslashes_deep', $_GET);
225 $_COOKIE = array_map('stripslashes_deep', $_COOKIE);
226}
227
228// Prevent caching on client side or proxy: (yes, it's ugly)
229header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
230header("Cache-Control: no-store, no-cache, must-revalidate");
231header("Cache-Control: post-check=0, pre-check=0", false);
232header("Pragma: no-cache");
233
45034273 234// Handling of old config file which do not have the new parameters.
482d67bd 235if (empty($GLOBALS['title'])) $GLOBALS['title']='Shared links on '.escape(index_url($_SERVER));
45034273 236if (empty($GLOBALS['timezone'])) $GLOBALS['timezone']=date_default_timezone_get();
8a80e4fe 237if (empty($GLOBALS['redirector'])) $GLOBALS['redirector']='';
45034273 238if (empty($GLOBALS['disablesessionprotection'])) $GLOBALS['disablesessionprotection']=false;
bb8f712d 239if (empty($GLOBALS['privateLinkByDefault'])) $GLOBALS['privateLinkByDefault']=false;
ebb2880d 240if (empty($GLOBALS['titleLink'])) $GLOBALS['titleLink']='?';
858c5c2b 241// I really need to rewrite Shaarli with a proper configuation manager.
45034273 242
50c9a12e 243if (! is_file($GLOBALS['config']['CONFIG_FILE'])) {
2e28269b
V		 244 // Ensure Shaarli has proper access to its resources
245 $errors = ApplicationUtils::checkResourcePermissions($GLOBALS['config']);
246
247 if ($errors != array()) {
248 $message = '<p>Insufficient permissions:</p><ul>';
249
250 foreach ($errors as $error) {
251 $message .= '<li>'.$error.'</li>';
252 }
253 $message .= '</ul>';
254
255 header('Content-Type: text/html; charset=utf-8');
256 echo $message;
257 exit;
258 }
259
260 // Display the installation form if no existing config is found
50c9a12e
V		 261 install();
262}
8a80e4fe 263
5f85fcd8
A		 264$GLOBALS['title'] = !empty($GLOBALS['title']) ? escape($GLOBALS['title']) : '';
265$GLOBALS['titleLink'] = !empty($GLOBALS['titleLink']) ? escape($GLOBALS['titleLink']) : '';
266$GLOBALS['redirector'] = !empty($GLOBALS['redirector']) ? escape($GLOBALS['redirector']) : '';
8a80e4fe 267
ae00595b
CH		 268// a token depending of deployment salt, user password, and the current ip
269define('STAY_SIGNED_IN_TOKEN', sha1($GLOBALS['hash'].$_SERVER["REMOTE_ADDR"].$GLOBALS['salt']));
8a80e4fe 270
45034273
SS		 271autoLocale(); // Sniff browser language and set date format accordingly.
272header('Content-Type: text/html; charset=utf-8'); // We use UTF-8 for proper international characters handling.
273
ff69d87e
FE		 274//==================================================================================================
275// Checking session state (i.e. is the user still logged in)
276//==================================================================================================
277
278function setup_login_state() {
ff69d87e 279 if ($GLOBALS['config']['OPEN_SHAARLI']) {
02ad8fb6 280 return true;
ff69d87e 281 }
02ad8fb6
JP		 282 $userIsLoggedIn = false; // By default, we do not consider the user as logged in;
283 $loginFailure = false; // If set to true, every attempt to authenticate the user will fail. This indicates that an important condition isn't met.
ff69d87e
FE		 284 if (!isset($GLOBALS['login'])) {
285 $userIsLoggedIn = false; // Shaarli is not configured yet.
286 $loginFailure = true;
287 }
288 if (isset($_COOKIE['shaarli_staySignedIn']) &&
289 $_COOKIE['shaarli_staySignedIn']===STAY_SIGNED_IN_TOKEN &&
290 !$loginFailure)
291 {
292 fillSessionInfo();
293 $userIsLoggedIn = true;
294 }
295 // If session does not exist on server side, or IP address has changed, or session has expired, logout.
296 if (empty($_SESSION['uid']) ||
297 ($GLOBALS['disablesessionprotection']==false && $_SESSION['ip']!=allIPs()) ||
298 time() >= $_SESSION['expires_on'])
299 {
300 logout();
301 $userIsLoggedIn = false;
302 $loginFailure = true;
303 }
304 if (!empty($_SESSION['longlastingsession'])) {
305 $_SESSION['expires_on']=time()+$_SESSION['longlastingsession']; // In case of "Stay signed in" checked.
306 }
307 else {
308 $_SESSION['expires_on']=time()+INACTIVITY_TIMEOUT; // Standard session expiration date.
309 }
310 if (!$loginFailure) {
311 $userIsLoggedIn = true;
312 }
313
314 return $userIsLoggedIn;
315}
ff69d87e 316$userIsLoggedIn = setup_login_state();
45034273 317
45034273 318
45034273
SS		 319// ------------------------------------------------------------------------------------------
320// Sniff browser language to display dates in the right format automatically.
321// (Note that is may not work on your server if the corresponding local is not installed.)
322function autoLocale()
323{
8438a2e5 324 $attempts = array('en_US'); // Default if browser does not send HTTP_ACCEPT_LANGUAGE
ad6c27b7 325 if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) // e.g. "fr,fr-fr;q=0.8,en;q=0.5,en-us;q=0.3"
326 { // (It's a bit crude, but it works very well. Preferred language is always presented first.)
8438a2e5
A		 327 if (preg_match('/([a-z]{2})-?([a-z]{2})?/i',$_SERVER['HTTP_ACCEPT_LANGUAGE'],$matches)) {
328 $loc = $matches[1] . (!empty($matches[2]) ? '_' . strtoupper($matches[2]) : '');
da49603b 329 $attempts = array($loc.'.UTF-8', $loc, str_replace('_', '-', $loc).'.UTF-8', str_replace('_', '-', $loc),
d33c5d4c
M		 330 $loc . '_' . strtoupper($loc).'.UTF-8', $loc . '_' . strtoupper($loc),
331 $loc . '_' . $loc.'.UTF-8', $loc . '_' . $loc, $loc . '-' . strtoupper($loc).'.UTF-8',
da49603b 332 $loc . '-' . strtoupper($loc), $loc . '-' . $loc.'.UTF-8', $loc . '-' . $loc);
8438a2e5 333 }
45034273 334 }
8438a2e5 335 setlocale(LC_TIME, $attempts); // LC_TIME = Set local for date/time format only.
45034273
SS		 336}
337
338// ------------------------------------------------------------------------------------------
339// PubSubHubbub protocol support (if enabled) [UNTESTED]
340// (Source: http://aldarone.fr/les-flux-rss-shaarli-et-pubsubhubbub/ )
341if (!empty($GLOBALS['config']['PUBSUBHUB_URL'])) include './publisher.php';
342function pubsubhub()
343{
344 if (!empty($GLOBALS['config']['PUBSUBHUB_URL']))
345 {
346 $p = new Publisher($GLOBALS['config']['PUBSUBHUB_URL']);
347 $topic_url = array (
482d67bd
V		 348 index_url($_SERVER).'?do=atom',
349 index_url($_SERVER).'?do=rss'
45034273
SS		 350 );
351 $p->publish_update($topic_url);
352 }
353}
354
355// ------------------------------------------------------------------------------------------
356// Session management
45034273
SS		 357
358// Returns the IP address of the client (Used to prevent session cookie hijacking.)
359function allIPs()
360{
361 $ip = $_SERVER["REMOTE_ADDR"];
362 // Then we use more HTTP headers to prevent session hijacking from users behind the same proxy.
363 if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) { $ip=$ip.'_'.$_SERVER['HTTP_X_FORWARDED_FOR']; }
364 if (isset($_SERVER['HTTP_CLIENT_IP'])) { $ip=$ip.'_'.$_SERVER['HTTP_CLIENT_IP']; }
365 return $ip;
366}
367
ae00595b 368function fillSessionInfo() {
ad6c27b7 369 $_SESSION['uid'] = sha1(uniqid('',true).'_'.mt_rand()); // Generate unique random number (different than phpsessionid)
ae00595b
CH		 370 $_SESSION['ip']=allIPs(); // We store IP address(es) of the client to make sure session is not hijacked.
371 $_SESSION['username']=$GLOBALS['login'];
372 $_SESSION['expires_on']=time()+INACTIVITY_TIMEOUT; // Set session expiration.
373}
374
45034273
SS		 375// Check that user/password is correct.
376function check_auth($login,$password)
377{
378 $hash = sha1($password.$login.$GLOBALS['salt']);
379 if ($login==$GLOBALS['login'] && $hash==$GLOBALS['hash'])
380 { // Login/password is correct.
ae00595b 381 fillSessionInfo();
1abe6555 382 logm($GLOBALS['config']['LOG_FILE'], $_SERVER['REMOTE_ADDR'], 'Login successful');
45034273
SS		 383 return True;
384 }
1abe6555 385 logm($GLOBALS['config']['LOG_FILE'], $_SERVER['REMOTE_ADDR'], 'Login failed for user '.$login);
45034273
SS		 386 return False;
387}
388
389// Returns true if the user is logged in.
390function isLoggedIn()
391{
ff69d87e
FE		 392 global $userIsLoggedIn;
393 return $userIsLoggedIn;
45034273
SS		 394}
395
396// Force logout.
ff69d87e
FE		 397function logout() {
398 if (isset($_SESSION)) {
399 unset($_SESSION['uid']);
400 unset($_SESSION['ip']);
401 unset($_SESSION['username']);
402 unset($_SESSION['privateonly']);
403 }
404 setcookie('shaarli_staySignedIn', FALSE, 0, WEB_PATH);
ae00595b 405}
45034273
SS		 406
407
408// ------------------------------------------------------------------------------------------
409// Brute force protection system
410// Several consecutive failed logins will ban the IP address for 30 minutes.
411if (!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?>");
412include $GLOBALS['config']['IPBANS_FILENAME'];
413// Signal a failed login. Will ban the IP if too many failures:
414function ban_loginFailed()
415{
416 $ip=$_SERVER["REMOTE_ADDR"]; $gb=$GLOBALS['IPBANS'];
417 if (!isset($gb['FAILURES'][$ip])) $gb['FAILURES'][$ip]=0;
418 $gb['FAILURES'][$ip]++;
419 if ($gb['FAILURES'][$ip]>($GLOBALS['config']['BAN_AFTER']-1))
420 {
421 $gb['BANS'][$ip]=time()+$GLOBALS['config']['BAN_DURATION'];
1abe6555 422 logm($GLOBALS['config']['LOG_FILE'], $_SERVER['REMOTE_ADDR'], 'IP address banned from login');
45034273
SS		 423 }
424 $GLOBALS['IPBANS'] = $gb;
425 file_put_contents($GLOBALS['config']['IPBANS_FILENAME'], "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>");
426}
427
428// Signals a successful login. Resets failed login counter.
429function ban_loginOk()
430{
431 $ip=$_SERVER["REMOTE_ADDR"]; $gb=$GLOBALS['IPBANS'];
432 unset($gb['FAILURES'][$ip]); unset($gb['BANS'][$ip]);
433 $GLOBALS['IPBANS'] = $gb;
434 file_put_contents($GLOBALS['config']['IPBANS_FILENAME'], "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>");
435}
436
437// Checks if the user CAN login. If 'true', the user can try to login.
438function ban_canLogin()
439{
440 $ip=$_SERVER["REMOTE_ADDR"]; $gb=$GLOBALS['IPBANS'];
441 if (isset($gb['BANS'][$ip]))
442 {
443 // User is banned. Check if the ban has expired:
444 if ($gb['BANS'][$ip]<=time())
445 { // Ban expired, user can try to login again.
1abe6555 446 logm($GLOBALS['config']['LOG_FILE'], $_SERVER['REMOTE_ADDR'], 'Ban lifted.');
45034273
SS		 447 unset($gb['FAILURES'][$ip]); unset($gb['BANS'][$ip]);
448 file_put_contents($GLOBALS['config']['IPBANS_FILENAME'], "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>");
449 return true; // Ban has expired, user can login.
450 }
451 return false; // User is banned.
452 }
453 return true; // User is not banned.
454}
455
456// ------------------------------------------------------------------------------------------
457// Process login form: Check if login/password is correct.
458if (isset($_POST['login']))
459{
460 if (!ban_canLogin()) die('I said: NO. You are banned for the moment. Go away.');
461 if (isset($_POST['password']) && tokenOk($_POST['token']) && (check_auth($_POST['login'], $_POST['password'])))
ad6c27b7 462 { // Login/password is OK.
45034273
SS		 463 ban_loginOk();
464 // If user wants to keep the session cookie even after the browser closes:
465 if (!empty($_POST['longlastingsession']))
466 {
ae00595b 467 setcookie('shaarli_staySignedIn', STAY_SIGNED_IN_TOKEN, time()+31536000, WEB_PATH);
45034273
SS		 468 $_SESSION['longlastingsession']=31536000; // (31536000 seconds = 1 year)
469 $_SESSION['expires_on']=time()+$_SESSION['longlastingsession']; // Set session expiration on server-side.
2d9fab88
SS		 470
471 $cookiedir = ''; if(dirname($_SERVER['SCRIPT_NAME'])!='/') $cookiedir=dirname($_SERVER["SCRIPT_NAME"]).'/';
2f32d074 472 session_set_cookie_params($_SESSION['longlastingsession'],$cookiedir,$_SERVER['SERVER_NAME']); // Set session cookie expiration on client side
ad6c27b7 473 // Note: Never forget the trailing slash on the cookie path!
45034273
SS		 474 session_regenerate_id(true); // Send cookie with new expiration date to browser.
475 }
476 else // Standard session expiration (=when browser closes)
477 {
2d9fab88 478 $cookiedir = ''; if(dirname($_SERVER['SCRIPT_NAME'])!='/') $cookiedir=dirname($_SERVER["SCRIPT_NAME"]).'/';
2f32d074 479 session_set_cookie_params(0,$cookiedir,$_SERVER['SERVER_NAME']); // 0 means "When browser closes"
45034273
SS		 480 session_regenerate_id(true);
481 }
f4c84ad7 482
45034273 483 // Optional redirect after login:
5fbabbb9
A		 484 if (isset($_GET['post'])) {
485 $uri = '?post='. urlencode($_GET['post']);
486 foreach (array('description', 'source', 'title') as $param) {
487 if (!empty($_GET[$param])) {
488 $uri .= '&'.$param.'='.urlencode($_GET[$param]);
489 }
490 }
491 header('Location: '. $uri);
492 exit;
493 }
494
495 if (isset($_GET['edit_link'])) {
496 header('Location: ?edit_link='. escape($_GET['edit_link']));
497 exit;
498 }
499
500 if (isset($_POST['returnurl'])) {
501 // Prevent loops over login screen.
502 if (strpos($_POST['returnurl'], 'do=login') === false) {
503 header('Location: '. escape($_POST['returnurl']));
504 exit;
505 }
45034273
SS		 506 }
507 header('Location: ?'); exit;
508 }
509 else
510 {
511 ban_loginFailed();
705f8355 512 $redir = '';
5fbabbb9
A		 513 if (isset($_GET['post'])) {
514 $redir = '?post=' . urlencode($_GET['post']);
515 foreach (array('description', 'source', 'title') as $param) {
516 if (!empty($_GET[$param])) {
517 $redir .= '&' . $param . '=' . urlencode($_GET[$param]);
518 }
519 }
520 }
fe16b01e 521 echo '<script>alert("Wrong login/password.");document.location=\'?do=login'.$redir.'\';</script>'; // Redirect to login screen.
45034273
SS		 522 exit;
523 }
524}
525
526// ------------------------------------------------------------------------------------------
527// Misc utility functions:
528
ad6c27b7 529// Convert post_max_size/upload_max_filesize (e.g. '16M') parameters to bytes.
45034273
SS		 530function return_bytes($val)
531{
532 $val = trim($val); $last=strtolower($val[strlen($val)-1]);
533 switch($last)
534 {
535 case 'g': $val *= 1024;
536 case 'm': $val *= 1024;
537 case 'k': $val *= 1024;
538 }
539 return $val;
540}
541
542// Try to determine max file size for uploads (POST).
543// Returns an integer (in bytes)
544function getMaxFileSize()
545{
546 $size1 = return_bytes(ini_get('post_max_size'));
547 $size2 = return_bytes(ini_get('upload_max_filesize'));
548 // Return the smaller of two:
549 $maxsize = min($size1,$size2);
ad6c27b7 550 // FIXME: Then convert back to readable notations ? (e.g. 2M instead of 2000000)
45034273
SS		 551 return $maxsize;
552}
553
45034273
SS		 554// ------------------------------------------------------------------------------------------
555// Token management for XSRF protection
556// Token should be used in any form which acts on data (create,update,delete,import...).
557if (!isset($_SESSION['tokens'])) $_SESSION['tokens']=array(); // Token are attached to the session.
558
559// Returns a token.
560function getToken()
561{
a1f5a6ec 562 $rnd = sha1(uniqid('',true).'_'.mt_rand().$GLOBALS['salt']); // We generate a random string.
45034273
SS		 563 $_SESSION['tokens'][$rnd]=1; // Store it on the server side.
564 return $rnd;
565}
566
ad6c27b7 567// Tells if a token is OK. Using this function will destroy the token.
568// true=token is OK.
45034273
SS		 569function tokenOk($token)
570{
571 if (isset($_SESSION['tokens'][$token]))
572 {
573 unset($_SESSION['tokens'][$token]); // Token is used: destroy it.
ad6c27b7 574 return true; // Token is OK.
45034273
SS		 575 }
576 return false; // Wrong token, or already used.
577}
578
579// ------------------------------------------------------------------------------------------
580/* This class is in charge of building the final page.
581 (This is basically a wrapper around RainTPL which pre-fills some fields.)
582 p = new pageBuilder;
583 p.assign('myfield','myvalue');
584 p.renderPage('mytemplate');
bb8f712d 585
45034273
SS		 586*/
587class pageBuilder
588{
589 private $tpl; // RainTPL template
590
591 function __construct()
592 {
056107ab 593 $this->tpl = false;
bb8f712d 594 }
45034273 595
056107ab
A		 596 /**
597 * Initialize all default tpl tags.
598 */
45034273 599 private function initialize()
bb8f712d
KT		 600 {
601 $this->tpl = new RainTPL;
4407b45f
V		 602
603 try {
604 $version = ApplicationUtils::checkUpdate(
605 shaarli_version,
606 $GLOBALS['config']['UPDATECHECK_FILENAME'],
607 $GLOBALS['config']['UPDATECHECK_INTERVAL'],
608 $GLOBALS['config']['ENABLE_UPDATECHECK'],
609 isLoggedIn(),
610 $GLOBALS['config']['UPDATECHECK_BRANCH']
611 );
612 $this->tpl->assign('newVersion', escape($version));
4a7af975 613 $this->tpl->assign('versionError', '');
4407b45f
V		 614
615 } catch (Exception $exc) {
1abe6555 616 logm($GLOBALS['config']['LOG_FILE'], $_SERVER['REMOTE_ADDR'], $exc->getMessage());
4a7af975 617 $this->tpl->assign('newVersion', '');
4407b45f
V		 618 $this->tpl->assign('versionError', escape($exc->getMessage()));
619 }
620
056107ab
A		 621 $this->tpl->assign('feedurl', escape(index_url($_SERVER)));
622 $searchcrits = ''; // Search criteria
623 if (!empty($_GET['searchtags'])) {
624 $searchcrits .= '&searchtags=' . urlencode($_GET['searchtags']);
625 }
c51fae92 626 if (!empty($_GET['searchterm'])) {
056107ab
A		 627 $searchcrits .= '&searchterm=' . urlencode($_GET['searchterm']);
628 }
629 $this->tpl->assign('searchcrits', $searchcrits);
630 $this->tpl->assign('source', index_url($_SERVER));
631 $this->tpl->assign('version', shaarli_version);
632 $this->tpl->assign('scripturl', index_url($_SERVER));
633 $this->tpl->assign('pagetitle', 'Shaarli');
634 $this->tpl->assign('privateonly', !empty($_SESSION['privateonly'])); // Show only private links?
635 if (!empty($GLOBALS['title'])) {
636 $this->tpl->assign('pagetitle', $GLOBALS['title']);
637 }
638 if (!empty($GLOBALS['titleLink'])) {
639 $this->tpl->assign('titleLink', $GLOBALS['titleLink']);
640 }
641 if (!empty($GLOBALS['pagetitle'])) {
642 $this->tpl->assign('pagetitle', $GLOBALS['pagetitle']);
643 }
644 $this->tpl->assign('shaarlititle', empty($GLOBALS['title']) ? 'Shaarli': $GLOBALS['title']);
e4b9a763
A		 645 if (!empty($GLOBALS['plugin_errors'])) {
646 $this->tpl->assign('plugin_errors', $GLOBALS['plugin_errors']);
056107ab 647 }
45034273 648 }
bb8f712d 649
45034273
SS		 650 // The following assign() method is basically the same as RainTPL (except that it's lazy)
651 public function assign($what,$where)
652 {
653 if ($this->tpl===false) $this->initialize(); // Lazy initialization
654 $this->tpl->assign($what,$where);
655 }
bb8f712d 656
45034273 657 // Render a specific page (using a template).
ad6c27b7 658 // e.g. pb.renderPage('picwall')
45034273
SS		 659 public function renderPage($page)
660 {
661 if ($this->tpl===false) $this->initialize(); // Lazy initialization
662 $this->tpl->draw($page);
663 }
f4c84ad7
D		 664
665 /**
666 * Render a 404 page (uses the template : tpl/404.tpl)
667 *
668 * usage : $PAGE->render404('The link was deleted')
669 * @param string $message A messate to display what is not found
670 */
671 public function render404($message='The page you are trying to reach does not exist or has been deleted.') {
672 header($_SERVER['SERVER_PROTOCOL'] . ' 404 Not Found');
673 $this->tpl->assign('error_message', $message);
674 $this->renderPage('404');
675 }
45034273
SS		 676}
677
45034273 678// ------------------------------------------------------------------------------------------
ad6c27b7 679// Output the last N links in RSS 2.0 format.
45034273
SS		 680function showRSS()
681{
682 header('Content-Type: application/rss+xml; charset=utf-8');
683
2abd3905 684 // $usepermalink : If true, use permalink instead of final link.
ad6c27b7 685 // User just has to add 'permalink' in URL parameters. e.g. http://mysite.com/shaarli/?do=rss&permalinks
ed5b38dd
FE		 686 // Also enabled through a config option
687 $usepermalinks = isset($_GET['permalinks']) || !$GLOBALS['config']['ENABLE_RSS_PERMALINKS'];
2abd3905 688
45034273
SS		 689 // Cache system
690 $query = $_SERVER["QUERY_STRING"];
01e48f26
V		 691 $cache = new CachedPage(
692 $GLOBALS['config']['PAGECACHE'],
482d67bd 693 page_url($_SERVER),
01e48f26
V		 694 startsWith($query,'do=rss') && !isLoggedIn()
695 );
696 $cached = $cache->cachedVersion();
697 if (! empty($cached)) {
698 echo $cached;
699 exit;
700 }
45034273
SS		 701
702 // If cached was not found (or not usable), then read the database and build the response:
9f15ca9e 703 $LINKSDB = new LinkDB(
9c8752a2 704 $GLOBALS['config']['DATASTORE'],
02ad8fb6 705 isLoggedIn(),
90e5bd65
A		 706 $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
707 $GLOBALS['redirector']
9f15ca9e
V		 708 );
709 // Read links from database (and filter private links if user it not logged in).
45034273 710
ad6c27b7 711 // Optionally filter the results:
c51fae92
A		 712 $searchtags = !empty($_GET['searchtags']) ? escape($_GET['searchtags']) : '';
713 $searchterm = !empty($_GET['searchterm']) ? escape($_GET['searchterm']) : '';
714 if (! empty($searchtags) && ! empty($searchterm)) {
715 $linksToDisplay = $LINKSDB->filter(
716 LinkFilter::$FILTER_TAG | LinkFilter::$FILTER_TEXT,
717 array($searchtags, $searchterm)
718 );
822bffce 719 }
c51fae92
A		 720 elseif ($searchtags) {
721 $linksToDisplay = $LINKSDB->filter(LinkFilter::$FILTER_TAG, $searchtags);
722 }
723 elseif ($searchterm) {
724 $linksToDisplay = $LINKSDB->filter(LinkFilter::$FILTER_TEXT, $searchterm);
822bffce
A		 725 }
726 else {
727 $linksToDisplay = $LINKSDB;
728 }
f3db3774 729
c677013b 730 $nblinksToDisplay = 50; // Number of links to display.
822bffce
A		 731 // In URL, you can specificy the number of links. Example: nb=200 or nb=all for all links.
732 if (!empty($_GET['nb'])) {
733 $nblinksToDisplay = $_GET['nb'] == 'all' ? count($linksToDisplay) : max(intval($_GET['nb']), 1);
c677013b 734 }
45034273 735
822bffce 736 $pageaddr = escape(index_url($_SERVER));
45034273 737 echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">';
5f85fcd8 738 echo '<channel><title>'.$GLOBALS['title'].'</title><link>'.$pageaddr.'</link>';
45034273
SS		 739 echo '<description>Shared links</description><language>en-en</language><copyright>'.$pageaddr.'</copyright>'."\n\n";
740 if (!empty($GLOBALS['config']['PUBSUBHUB_URL']))
741 {
742 echo '<!-- PubSubHubbub Discovery -->';
5f85fcd8
A		 743 echo '<link rel="hub" href="'.escape($GLOBALS['config']['PUBSUBHUB_URL']).'" xmlns="http://www.w3.org/2005/Atom" />';
744 echo '<link rel="self" href="'.$pageaddr.'?do=rss" xmlns="http://www.w3.org/2005/Atom" />';
45034273
SS		 745 echo '<!-- End Of PubSubHubbub Discovery -->';
746 }
747 $i=0;
748 $keys=array(); foreach($linksToDisplay as $key=>$value) { $keys[]=$key; } // No, I can't use array_keys().
fbd9e527 749 while ($i<$nblinksToDisplay && $i<count($keys))
45034273
SS		 750 {
751 $link = $linksToDisplay[$keys[$i]];
752 $guid = $pageaddr.'?'.smallHash($link['linkdate']);
205a4277 753 $date = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $link['linkdate']);
5f85fcd8 754 $absurl = $link['url'];
45034273 755 if (startsWith($absurl,'?')) $absurl=$pageaddr.$absurl; // make permalink URL absolute
2abd3905 756 if ($usepermalinks===true)
5f85fcd8 757 echo '<item><title>'.$link['title'].'</title><guid isPermaLink="true">'.$guid.'</guid><link>'.$guid.'</link>';
2abd3905 758 else
5f85fcd8 759 echo '<item><title>'.$link['title'].'</title><guid isPermaLink="false">'.$guid.'</guid><link>'.$absurl.'</link>';
205a4277
V		 760 if (!$GLOBALS['config']['HIDE_TIMESTAMPS'] || isLoggedIn()) {
761 echo '<pubDate>'.escape($date->format(DateTime::RSS))."</pubDate>\n";
762 }
45034273
SS		 763 if ($link['tags']!='') // Adding tags to each RSS entry (as mentioned in RSS specification)
764 {
5f85fcd8 765 foreach(explode(' ',$link['tags']) as $tag) { echo '<category domain="'.$pageaddr.'">'.$tag.'</category>'."\n"; }
45034273 766 }
2abd3905
SS		 767
768 // Add permalink in description
769 $descriptionlink = '(<a href="'.$guid.'">Permalink</a>)';
770 // If user wants permalinks first, put the final link in description
771 if ($usepermalinks===true) $descriptionlink = '(<a href="'.$absurl.'">Link</a>)';
772 if (strlen($link['description'])>0) $descriptionlink = '<br>'.$descriptionlink;
90e5bd65
A		 773 echo '<description><![CDATA['.
774 format_description($link['description'], $GLOBALS['redirector']) .
775 $descriptionlink . ']]></description>' . "\n</item>\n";
45034273
SS		 776 $i++;
777 }
482d67bd 778 echo '</channel></rss><!-- Cached version of '.escape(page_url($_SERVER)).' -->';
45034273
SS		 779
780 $cache->cache(ob_get_contents());
781 ob_end_flush();
782 exit;
783}
784
785// ------------------------------------------------------------------------------------------
ad6c27b7 786// Output the last N links in ATOM format.
45034273
SS		 787function showATOM()
788{
789 header('Content-Type: application/atom+xml; charset=utf-8');
790
2abd3905 791 // $usepermalink : If true, use permalink instead of final link.
ad6c27b7 792 // User just has to add 'permalink' in URL parameters. e.g. http://mysite.com/shaarli/?do=atom&permalinks
ed5b38dd 793 $usepermalinks = isset($_GET['permalinks']) || !$GLOBALS['config']['ENABLE_RSS_PERMALINKS'];
2abd3905 794
45034273
SS		 795 // Cache system
796 $query = $_SERVER["QUERY_STRING"];
01e48f26
V		 797 $cache = new CachedPage(
798 $GLOBALS['config']['PAGECACHE'],
482d67bd 799 page_url($_SERVER),
01e48f26
V		 800 startsWith($query,'do=atom') && !isLoggedIn()
801 );
802 $cached = $cache->cachedVersion();
803 if (!empty($cached)) {
804 echo $cached;
805 exit;
806 }
45034273 807
01e48f26
V		 808 // If cached was not found (or not usable), then read the database and build the response:
809 // Read links from database (and filter private links if used it not logged in).
9f15ca9e 810 $LINKSDB = new LinkDB(
9c8752a2 811 $GLOBALS['config']['DATASTORE'],
02ad8fb6 812 isLoggedIn(),
90e5bd65
A		 813 $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
814 $GLOBALS['redirector']
9f15ca9e 815 );
45034273 816
ad6c27b7 817 // Optionally filter the results:
c51fae92
A		 818 $searchtags = !empty($_GET['searchtags']) ? escape($_GET['searchtags']) : '';
819 $searchterm = !empty($_GET['searchterm']) ? escape($_GET['searchterm']) : '';
820 if (! empty($searchtags) && ! empty($searchterm)) {
821 $linksToDisplay = $LINKSDB->filter(
822 LinkFilter::$FILTER_TAG | LinkFilter::$FILTER_TEXT,
823 array($searchtags, $searchterm)
824 );
822bffce 825 }
c51fae92
A		 826 elseif ($searchtags) {
827 $linksToDisplay = $LINKSDB->filter(LinkFilter::$FILTER_TAG, $searchtags);
828 }
829 elseif ($searchterm) {
830 $linksToDisplay = $LINKSDB->filter(LinkFilter::$FILTER_TEXT, $searchterm);
822bffce
A		 831 }
832 else {
833 $linksToDisplay = $LINKSDB;
834 }
f3db3774 835
c677013b 836 $nblinksToDisplay = 50; // Number of links to display.
822bffce
A		 837 // In URL, you can specificy the number of links. Example: nb=200 or nb=all for all links.
838 if (!empty($_GET['nb'])) {
839 $nblinksToDisplay = $_GET['nb']=='all' ? count($linksToDisplay) : max(intval($_GET['nb']), 1);
c677013b 840 }
45034273 841
482d67bd 842 $pageaddr=escape(index_url($_SERVER));
45034273
SS		 843 $latestDate = '';
844 $entries='';
845 $i=0;
846 $keys=array(); foreach($linksToDisplay as $key=>$value) { $keys[]=$key; } // No, I can't use array_keys().
fbd9e527 847 while ($i<$nblinksToDisplay && $i<count($keys))
45034273
SS		 848 {
849 $link = $linksToDisplay[$keys[$i]];
850 $guid = $pageaddr.'?'.smallHash($link['linkdate']);
205a4277
V		 851 $date = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $link['linkdate']);
852 $iso8601date = $date->format(DateTime::ISO8601);
853 $latestDate = max($latestDate, $iso8601date);
5f85fcd8 854 $absurl = $link['url'];
45034273 855 if (startsWith($absurl,'?')) $absurl=$pageaddr.$absurl; // make permalink URL absolute
5f85fcd8 856 $entries.='<entry><title>'.$link['title'].'</title>';
2abd3905
SS		 857 if ($usepermalinks===true)
858 $entries.='<link href="'.$guid.'" /><id>'.$guid.'</id>';
859 else
860 $entries.='<link href="'.$absurl.'" /><id>'.$guid.'</id>';
205a4277
V		 861
862 if (!$GLOBALS['config']['HIDE_TIMESTAMPS'] || isLoggedIn()) {
863 $entries.='<updated>'.escape($iso8601date).'</updated>';
864 }
2abd3905
SS		 865
866 // Add permalink in description
5f85fcd8 867 $descriptionlink = '(<a href="'.$guid.'">Permalink</a>)';
2abd3905 868 // If user wants permalinks first, put the final link in description
5f85fcd8
A		 869 if ($usepermalinks===true) $descriptionlink = '(<a href="'.$absurl.'">Link</a>)';
870 if (strlen($link['description'])>0) $descriptionlink = '<br>'.$descriptionlink;
2abd3905 871
90e5bd65
A		 872 $entries .= '<content type="html"><![CDATA['.
873 format_description($link['description'], $GLOBALS['redirector']) .
874 $descriptionlink . "]]></content>\n";
45034273
SS		 875 if ($link['tags']!='') // Adding tags to each ATOM entry (as mentioned in ATOM specification)
876 {
877 foreach(explode(' ',$link['tags']) as $tag)
5f85fcd8 878 { $entries.='<category scheme="'.$pageaddr.'" term="'.$tag.'" />'."\n"; }
45034273
SS		 879 }
880 $entries.="</entry>\n";
881 $i++;
882 }
883 $feed='<?xml version="1.0" encoding="UTF-8"?><feed xmlns="http://www.w3.org/2005/Atom">';
5f85fcd8
A		 884 $feed.='<title>'.$GLOBALS['title'].'</title>';
885 if (!$GLOBALS['config']['HIDE_TIMESTAMPS'] || isLoggedIn()) $feed.='<updated>'.escape($latestDate).'</updated>';
482d67bd 886 $feed.='<link rel="self" href="'.escape(server_url($_SERVER).$_SERVER["REQUEST_URI"]).'" />';
45034273
SS		 887 if (!empty($GLOBALS['config']['PUBSUBHUB_URL']))
888 {
889 $feed.='<!-- PubSubHubbub Discovery -->';
5f85fcd8 890 $feed.='<link rel="hub" href="'.escape($GLOBALS['config']['PUBSUBHUB_URL']).'" />';
45034273
SS		 891 $feed.='<!-- End Of PubSubHubbub Discovery -->';
892 }
5f85fcd8
A		 893 $feed.='<author><name>'.$pageaddr.'</name><uri>'.$pageaddr.'</uri></author>';
894 $feed.='<id>'.$pageaddr.'</id>'."\n\n"; // Yes, I know I should use a real IRI (RFC3987), but the site URL will do.
45034273 895 $feed.=$entries;
482d67bd 896 $feed.='</feed><!-- Cached version of '.escape(page_url($_SERVER)).' -->';
45034273 897 echo $feed;
bb8f712d 898
45034273
SS		 899 $cache->cache(ob_get_contents());
900 ob_end_flush();
901 exit;
902}
903
904// ------------------------------------------------------------------------------------------
905// Daily RSS feed: 1 RSS entry per day giving all the links on that day.
906// Gives the last 7 days (which have links).
907// This RSS feed cannot be filtered.
f3b8f9f0 908function showDailyRSS() {
45034273
SS		 909 // Cache system
910 $query = $_SERVER["QUERY_STRING"];
01e48f26
V		 911 $cache = new CachedPage(
912 $GLOBALS['config']['PAGECACHE'],
482d67bd 913 page_url($_SERVER),
01e48f26
V		 914 startsWith($query,'do=dailyrss') && !isLoggedIn()
915 );
f3b8f9f0
A		 916 $cached = $cache->cachedVersion();
917 if (!empty($cached)) {
918 echo $cached;
919 exit;
920 }
9f15ca9e 921
f3b8f9f0
A		 922 // If cached was not found (or not usable), then read the database and build the response:
923 // Read links from database (and filter private links if used it not logged in).
9f15ca9e 924 $LINKSDB = new LinkDB(
9c8752a2 925 $GLOBALS['config']['DATASTORE'],
02ad8fb6 926 isLoggedIn(),
90e5bd65
A		 927 $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
928 $GLOBALS['redirector']
9f15ca9e 929 );
bb8f712d 930
45034273
SS		 931 /* Some Shaarlies may have very few links, so we need to look
932 back in time (rsort()) until we have enough days ($nb_of_days).
933 */
f3b8f9f0
A		 934 $linkdates = array();
935 foreach ($LINKSDB as $linkdate => $value) {
936 $linkdates[] = $linkdate;
937 }
45034273 938 rsort($linkdates);
f3b8f9f0
A		 939 $nb_of_days = 7; // We take 7 days.
940 $today = Date('Ymd');
941 $days = array();
942
943 foreach ($linkdates as $linkdate) {
944 $day = substr($linkdate, 0, 8); // Extract day (without time)
945 if (strcmp($day,$today) < 0) {
946 if (empty($days[$day])) {
947 $days[$day] = array();
948 }
949 $days[$day][] = $linkdate;
950 }
951
952 if (count($days) > $nb_of_days) {
953 break; // Have we collected enough days?
45034273 954 }
45034273 955 }
bb8f712d 956
45034273
SS		 957 // Build the RSS feed.
958 header('Content-Type: application/rss+xml; charset=utf-8');
482d67bd 959 $pageaddr = escape(index_url($_SERVER));
45034273 960 echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0">';
f3b8f9f0
A		 961 echo '<channel>';
962 echo '<title>Daily - '. $GLOBALS['title'] . '</title>';
963 echo '<link>'. $pageaddr .'</link>';
964 echo '<description>Daily shared links</description>';
965 echo '<language>en-en</language>';
966 echo '<copyright>'. $pageaddr .'</copyright>'. PHP_EOL;
967
968 // For each day.
969 foreach ($days as $day => $linkdates) {
205a4277 970 $dayDate = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $day.'_000000');
482d67bd 971 $absurl = escape(index_url($_SERVER).'?do=daily&day='.$day); // Absolute URL of the corresponding "Daily" page.
bb8f712d 972
45034273 973 // Build the HTML body of this RSS entry.
f3b8f9f0
A		 974 $html = '';
975 $href = '';
976 $links = array();
977
45034273 978 // We pre-format some fields for proper output.
f3b8f9f0 979 foreach ($linkdates as $linkdate) {
45034273 980 $l = $LINKSDB[$linkdate];
90e5bd65 981 $l['formatedDescription'] = format_description($l['description'], $GLOBALS['redirector']);
bb8f712d 982 $l['thumbnail'] = thumbnail($l['url']);
205a4277
V		 983 $l_date = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $l['linkdate']);
984 $l['timestamp'] = $l_date->getTimestamp();
f3b8f9f0 985 if (startsWith($l['url'], '?')) {
482d67bd 986 $l['url'] = index_url($_SERVER) . $l['url']; // make permalink URL absolute
f3b8f9f0
A		 987 }
988 $links[$linkdate] = $l;
45034273 989 }
f3b8f9f0 990
45034273 991 // Then build the HTML for this day:
bb8f712d 992 $tpl = new RainTPL;
f3b8f9f0 993 $tpl->assign('title', $GLOBALS['title']);
205a4277 994 $tpl->assign('daydate', $dayDate->getTimestamp());
f3b8f9f0
A		 995 $tpl->assign('absurl', $absurl);
996 $tpl->assign('links', $links);
205a4277 997 $tpl->assign('rssdate', escape($dayDate->format(DateTime::RSS)));
f3b8f9f0 998 $html = $tpl->draw('dailyrss', $return_string=true);
45034273 999
f3b8f9f0 1000 echo $html . PHP_EOL;
bb8f712d 1001 }
482d67bd 1002 echo '</channel></rss><!-- Cached version of '. escape(page_url($_SERVER)) .' -->';
bb8f712d 1003
45034273
SS		 1004 $cache->cache(ob_get_contents());
1005 ob_end_flush();
1006 exit;
1007}
1008
38603b24
A		 1009/**
1010 * Show the 'Daily' page.
1011 *
1012 * @param PageBuilder $pageBuilder Template engine wrapper.
1013 */
1014function showDaily($pageBuilder)
45034273 1015{
9f15ca9e 1016 $LINKSDB = new LinkDB(
9c8752a2 1017 $GLOBALS['config']['DATASTORE'],
02ad8fb6 1018 isLoggedIn(),
90e5bd65
A		 1019 $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
1020 $GLOBALS['redirector']
9f15ca9e 1021 );
45034273
SS		 1022
1023 $day=Date('Ymd',strtotime('-1 day')); // Yesterday, in format YYYYMMDD.
1024 if (isset($_GET['day'])) $day=$_GET['day'];
bb8f712d 1025
45034273
SS		 1026 $days = $LINKSDB->days();
1027 $i = array_search($day,$days);
f3db3774 1028 if ($i===false) { $i=count($days)-1; $day=$days[$i]; }
bb8f712d
KT		 1029 $previousday='';
1030 $nextday='';
45034273
SS		 1031 if ($i!==false)
1032 {
f3db3774 1033 if ($i>=1) $previousday=$days[$i-1];
45034273
SS		 1034 if ($i<count($days)-1) $nextday=$days[$i+1];
1035 }
1036
9186ab95 1037 try {
822bffce 1038 $linksToDisplay = $LINKSDB->filter(LinkFilter::$FILTER_DAY, $day);
9186ab95
V		 1039 } catch (Exception $exc) {
1040 error_log($exc);
d1e2f8e5 1041 $linksToDisplay = array();
9186ab95
V		 1042 }
1043
45034273
SS		 1044 // We pre-format some fields for proper output.
1045 foreach($linksToDisplay as $key=>$link)
1046 {
5f85fcd8 1047
dd62b9ba
SS		 1048 $taglist = explode(' ',$link['tags']);
1049 uasort($taglist, 'strcasecmp');
1050 $linksToDisplay[$key]['taglist']=$taglist;
90e5bd65 1051 $linksToDisplay[$key]['formatedDescription'] = format_description($link['description'], $GLOBALS['redirector']);
bb8f712d 1052 $linksToDisplay[$key]['thumbnail'] = thumbnail($link['url']);
205a4277
V		 1053 $date = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $link['linkdate']);
1054 $linksToDisplay[$key]['timestamp'] = $date->getTimestamp();
45034273 1055 }
bb8f712d 1056
45034273 1057 /* We need to spread the articles on 3 columns.
ad6c27b7 1058 I did not want to use a JavaScript lib like http://masonry.desandro.com/
bb8f712d 1059 so I manually spread entries with a simple method: I roughly evaluate the
45034273
SS		 1060 height of a div according to title and description length.
1061 */
1062 $columns=array(array(),array(),array()); // Entries to display, for each column.
1063 $fill=array(0,0,0); // Rough estimate of columns fill.
1064 foreach($linksToDisplay as $key=>$link)
1065 {
1066 // Roughly estimate length of entry (by counting characters)
1067 // Title: 30 chars = 1 line. 1 line is 30 pixels height.
1068 // Description: 836 characters gives roughly 342 pixel height.
ad6c27b7 1069 // This is not perfect, but it's usually OK.
45034273
SS		 1070 $length=strlen($link['title'])+(342*strlen($link['description']))/836;
1071 if ($link['thumbnail']) $length +=100; // 1 thumbnails roughly takes 100 pixels height.
1072 // Then put in column which is the less filled:
1073 $smallest=min($fill); // find smallest value in array.
1074 $index=array_search($smallest,$fill); // find index of this smallest value.
1075 array_push($columns[$index],$link); // Put entry in this column.
1076 $fill[$index]+=$length;
1077 }
38603b24 1078
205a4277 1079 $dayDate = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $day.'_000000');
6fc14d53
A		 1080 $data = array(
1081 'linksToDisplay' => $linksToDisplay,
1082 'linkcount' => count($LINKSDB),
1083 'cols' => $columns,
205a4277 1084 'day' => $dayDate->getTimestamp(),
6fc14d53
A		 1085 'previousday' => $previousday,
1086 'nextday' => $nextday,
1087 );
1088 $pluginManager = PluginManager::getInstance();
1089 $pluginManager->executeHooks('render_daily', $data, array('loggedin' => isLoggedIn()));
1090
1091 foreach ($data as $key => $value) {
38603b24 1092 $pageBuilder->assign($key, $value);
6fc14d53
A		 1093 }
1094
38603b24 1095 $pageBuilder->renderPage('daily');
45034273
SS		 1096 exit;
1097}
1098
6fc14d53
A		 1099// Renders the linklist
1100function showLinkList($PAGE, $LINKSDB) {
1101 buildLinkList($PAGE,$LINKSDB); // Compute list of links to display
1102 $PAGE->renderPage('linklist');
1103}
1104
45034273
SS		 1105
1106// ------------------------------------------------------------------------------------------
1107// Render HTML page (according to URL parameters and user rights)
1108function renderPage()
1109{
9f15ca9e 1110 $LINKSDB = new LinkDB(
9c8752a2 1111 $GLOBALS['config']['DATASTORE'],
02ad8fb6 1112 isLoggedIn(),
90e5bd65
A		 1113 $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
1114 $GLOBALS['redirector']
9f15ca9e 1115 );
45034273 1116
510377d2
A		 1117 $updater = new Updater(
1118 read_updates_file($GLOBALS['config']['UPDATES_FILE']),
1119 $GLOBALS,
1120 $LINKSDB,
1121 isLoggedIn()
1122 );
1123 try {
1124 $newUpdates = $updater->update();
1125 if (! empty($newUpdates)) {
1126 write_updates_file(
1127 $GLOBALS['config']['UPDATES_FILE'],
1128 $updater->getDoneUpdates()
1129 );
1130 }
1131 }
1132 catch(Exception $e) {
1133 die($e->getMessage());
1134 }
1135
6fc14d53
A		 1136 $PAGE = new pageBuilder;
1137
1138 // Determine which page will be rendered.
1139 $query = (isset($_SERVER['QUERY_STRING'])) ? $_SERVER['QUERY_STRING'] : '';
1140 $targetPage = Router::findPage($query, $_GET, isLoggedIn());
1141
1142 // Call plugin hooks for header, footer and includes, specifying which page will be rendered.
1143 // Then assign generated data to RainTPL.
1144 $common_hooks = array(
fea5db7a 1145 'includes',
6fc14d53
A		 1146 'header',
1147 'footer',
6fc14d53
A		 1148 );
1149 $pluginManager = PluginManager::getInstance();
1150 foreach($common_hooks as $name) {
1151 $plugin_data = array();
1152 $pluginManager->executeHooks('render_' . $name, $plugin_data,
1153 array(
1154 'target' => $targetPage,
1155 'loggedin' => isLoggedIn()
1156 )
1157 );
1158 $PAGE->assign('plugins_' . $name, $plugin_data);
1159 }
1160
45034273 1161 // -------- Display login form.
6fc14d53 1162 if ($targetPage == Router::$PAGE_LOGIN)
45034273
SS		 1163 {
1164 if ($GLOBALS['config']['OPEN_SHAARLI']) { header('Location: ?'); exit; } // No need to login for open Shaarli
1165 $token=''; if (ban_canLogin()) $token=getToken(); // Do not waste token generation if not useful.
45034273 1166 $PAGE->assign('token',$token);
5f85fcd8 1167 $PAGE->assign('returnurl',(isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']):''));
45034273
SS		 1168 $PAGE->renderPage('loginform');
1169 exit;
1170 }
1171 // -------- User wants to logout.
1172 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=logout'))
1173 {
01e48f26 1174 invalidateCaches($GLOBALS['config']['PAGECACHE']);
45034273
SS		 1175 logout();
1176 header('Location: ?');
1177 exit;
1178 }
1179
1180 // -------- Picture wall
6fc14d53 1181 if ($targetPage == Router::$PAGE_PICWALL)
45034273 1182 {
ad6c27b7 1183 // Optionally filter the results:
c51fae92
A		 1184 $searchtags = !empty($_GET['searchtags']) ? escape($_GET['searchtags']) : '';
1185 $searchterm = !empty($_GET['searchterm']) ? escape($_GET['searchterm']) : '';
1186 if (! empty($searchtags) && ! empty($searchterm)) {
1187 $links = $LINKSDB->filter(
1188 LinkFilter::$FILTER_TAG | LinkFilter::$FILTER_TEXT,
1189 array($searchtags, $searchterm)
1190 );
822bffce 1191 }
c51fae92
A		 1192 elseif ($searchtags) {
1193 $links = $LINKSDB->filter(LinkFilter::$FILTER_TAG, $searchtags);
1194 }
1195 elseif ($searchterm) {
1196 $links = $LINKSDB->filter(LinkFilter::$FILTER_TEXT, $searchterm);
822bffce
A		 1197 }
1198 else {
1199 $links = $LINKSDB;
1200 }
f3db3774 1201
822bffce 1202 $linksToDisplay = array();
45034273
SS		 1203
1204 // Get only links which have a thumbnail.
1205 foreach($links as $link)
1206 {
5f85fcd8 1207 $permalink='?'.escape(smallhash($link['linkdate']));
45034273
SS		 1208 $thumb=lazyThumbnail($link['url'],$permalink);
1209 if ($thumb!='') // Only output links which have a thumbnail.
1210 {
1211 $link['thumbnail']=$thumb; // Thumbnail HTML code.
45034273
SS		 1212 $linksToDisplay[]=$link; // Add to array.
1213 }
1214 }
f3db3774 1215
6fc14d53
A		 1216 $data = array(
1217 'linkcount' => count($LINKSDB),
1218 'linksToDisplay' => $linksToDisplay,
1219 );
1220 $pluginManager->executeHooks('render_picwall', $data, array('loggedin' => isLoggedIn()));
1221
1222 foreach ($data as $key => $value) {
1223 $PAGE->assign($key, $value);
1224 }
1225
45034273
SS		 1226 $PAGE->renderPage('picwall');
1227 exit;
1228 }
1229
1230 // -------- Tag cloud
6fc14d53 1231 if ($targetPage == Router::$PAGE_TAGCLOUD)
45034273
SS		 1232 {
1233 $tags= $LINKSDB->allTags();
a037ac69 1234
45034273
SS		 1235 // We sort tags alphabetically, then choose a font size according to count.
1236 // First, find max value.
f1e96a06
A		 1237 $maxcount = 0;
1238 foreach ($tags as $value) {
1239 $maxcount = max($maxcount, $value);
1240 }
1241
1242 // Sort tags alphabetically: case insensitive, support locale if avalaible.
1243 uksort($tags, function($a, $b) {
1244 // Collator is part of PHP intl.
1245 if (class_exists('Collator')) {
1246 $c = new Collator(setlocale(LC_ALL, 0));
1247 return $c->compare($a, $b);
1248 } else {
1249 return strcasecmp($a, $b);
1250 }
1251 });
1252
45034273
SS		 1253 $tagList=array();
1254 foreach($tags as $key=>$value)
f1e96a06 1255 // 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 1256 {
1e3b2740 1257 $tagList[$key] = array('count'=>$value,'size'=>log($value, 15) / log($maxcount, 30) * (22-6) + 6);
45034273 1258 }
6fc14d53
A		 1259
1260 $data = array(
1261 'linkcount' => count($LINKSDB),
1262 'tags' => $tagList,
1263 );
1264 $pluginManager->executeHooks('render_tagcloud', $data, array('loggedin' => isLoggedIn()));
1265
1266 foreach ($data as $key => $value) {
1267 $PAGE->assign($key, $value);
1268 }
1269
45034273 1270 $PAGE->renderPage('tagcloud');
bb8f712d 1271 exit;
45034273
SS		 1272 }
1273
38603b24
A		 1274 // Daily page.
1275 if ($targetPage == Router::$PAGE_DAILY) {
1276 showDaily($PAGE);
1277 }
1278
8f8113b9
A		 1279 // Display openseach plugin (XML)
1280 if ($targetPage == Router::$PAGE_OPENSEARCH) {
1281 header('Content-Type: application/xml; charset=utf-8');
1282 $PAGE->assign('serverurl', index_url($_SERVER));
1283 $PAGE->renderPage('opensearch');
1284 exit;
1285 }
1286
45034273
SS		 1287 // -------- User clicks on a tag in a link: The tag is added to the list of searched tags (searchtags=...)
1288 if (isset($_GET['addtag']))
1289 {
1290 // Get previous URL (http_referer) and add the tag to the searchtags parameters in query.
1291 if (empty($_SERVER['HTTP_REFERER'])) { header('Location: ?searchtags='.urlencode($_GET['addtag'])); exit; } // In case browser does not send HTTP_REFERER
1292 parse_str(parse_url($_SERVER['HTTP_REFERER'],PHP_URL_QUERY), $params);
732e683b 1293
775803a0
A		 1294 // Prevent redirection loop
1295 if (isset($params['addtag'])) {
1296 unset($params['addtag']);
1297 }
1298
732e683b
FE		 1299 // Check if this tag is already in the search query and ignore it if it is.
1300 // Each tag is always separated by a space
6ac95d9c
A		 1301 if (isset($params['searchtags'])) {
1302 $current_tags = explode(' ', $params['searchtags']);
1303 } else {
1304 $current_tags = array();
1305 }
732e683b
FE		 1306 $addtag = true;
1307 foreach ($current_tags as $value) {
1308 if ($value === $_GET['addtag']) {
1309 $addtag = false;
1310 break;
1311 }
1312 }
1313 // Append the tag if necessary
1314 if (empty($params['searchtags'])) {
1315 $params['searchtags'] = trim($_GET['addtag']);
1316 }
1317 else if ($addtag) {
1318 $params['searchtags'] = trim($params['searchtags']).' '.trim($_GET['addtag']);
1319 }
1320
45034273
SS		 1321 unset($params['page']); // We also remove page (keeping the same page has no sense, since the results are different)
1322 header('Location: ?'.http_build_query($params));
1323 exit;
1324 }
1325
1326 // -------- User clicks on a tag in result count: Remove the tag from the list of searched tags (searchtags=...)
775803a0 1327 if (isset($_GET['removetag'])) {
45034273 1328 // Get previous URL (http_referer) and remove the tag from the searchtags parameters in query.
775803a0
A		 1329 if (empty($_SERVER['HTTP_REFERER'])) {
1330 header('Location: ?');
1331 exit;
1332 }
1333
1334 // In case browser does not send HTTP_REFERER
1335 parse_str(parse_url($_SERVER['HTTP_REFERER'], PHP_URL_QUERY), $params);
1336
1337 // Prevent redirection loop
1338 if (isset($params['removetag'])) {
1339 unset($params['removetag']);
1340 }
1341
1342 if (isset($params['searchtags'])) {
822bffce 1343 $tags = explode(' ', $params['searchtags']);
2c75f8e7
A		 1344 // Remove value from array $tags.
1345 $tags = array_diff($tags, array($_GET['removetag']));
1346 $params['searchtags'] = implode(' ',$tags);
1347
1348 if (empty($params['searchtags'])) {
775803a0 1349 unset($params['searchtags']);
775803a0 1350 }
2c75f8e7 1351
45034273
SS		 1352 unset($params['page']); // We also remove page (keeping the same page has no sense, since the results are different)
1353 }
1354 header('Location: ?'.http_build_query($params));
1355 exit;
1356 }
1357
1358 // -------- User wants to change the number of links per page (linksperpage=...)
775803a0
A		 1359 if (isset($_GET['linksperpage'])) {
1360 if (is_numeric($_GET['linksperpage'])) {
1361 $_SESSION['LINKS_PER_PAGE']=abs(intval($_GET['linksperpage']));
1362 }
1363
1364 header('Location: '. generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('linksperpage')));
45034273
SS		 1365 exit;
1366 }
bb8f712d 1367
45034273 1368 // -------- User wants to see only private links (toggle)
775803a0
A		 1369 if (isset($_GET['privateonly'])) {
1370 if (empty($_SESSION['privateonly'])) {
1371 $_SESSION['privateonly'] = 1; // See only private links
1372 } else {
45034273
SS		 1373 unset($_SESSION['privateonly']); // See all links
1374 }
775803a0
A		 1375
1376 header('Location: '. generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('privateonly')));
45034273
SS		 1377 exit;
1378 }
1379
1380 // -------- Handle other actions allowed for non-logged in users:
1381 if (!isLoggedIn())
1382 {
ad6c27b7 1383 // User tries to post new link but is not logged in:
45034273
SS		 1384 // Show login screen, then redirect to ?post=...
1385 if (isset($_GET['post']))
1386 {
a1795ddc 1387 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($_GET['source']):'')); // Redirect to login page, then back to post link.
45034273
SS		 1388 exit;
1389 }
aedc912d
FE		 1390
1391 // Same case as above except that user tried to access ?do=addlink without being logged in
1392 // Note: passing empty parameters makes Shaarli generate default URLs and descriptions.
1393 if (isset($_GET['do']) && $_GET['do'] === 'addlink') {
1394 header('Location: ?do=login&post=');
1395 exit;
1396 }
6fc14d53 1397 showLinkList($PAGE, $LINKSDB);
5fbabbb9
A		 1398 if (isset($_GET['edit_link'])) {
1399 header('Location: ?do=login&edit_link='. escape($_GET['edit_link']));
1400 exit;
1401 }
1402
ad6c27b7 1403 exit; // Never remove this one! All operations below are reserved for logged in user.
45034273
SS		 1404 }
1405
1406 // -------- All other functions are reserved for the registered user:
1407
1408 // -------- Display the Tools menu if requested (import/export/bookmarklet...)
6fc14d53 1409 if ($targetPage == Router::$PAGE_TOOLS)
45034273 1410 {
6fc14d53
A		 1411 $data = array(
1412 'linkcount' => count($LINKSDB),
1413 'pageabsaddr' => index_url($_SERVER),
1414 );
1415 $pluginManager->executeHooks('render_tools', $data);
1416
1417 foreach ($data as $key => $value) {
1418 $PAGE->assign($key, $value);
1419 }
1420
45034273
SS		 1421 $PAGE->renderPage('tools');
1422 exit;
1423 }
1424
1425 // -------- User wants to change his/her password.
6fc14d53 1426 if ($targetPage == Router::$PAGE_CHANGEPASSWORD)
45034273
SS		 1427 {
1428 if ($GLOBALS['config']['OPEN_SHAARLI']) die('You are not supposed to change a password on an Open Shaarli.');
1429 if (!empty($_POST['setpassword']) && !empty($_POST['oldpassword']))
1430 {
ad6c27b7 1431 if (!tokenOk($_POST['token'])) die('Wrong token.'); // Go away!
45034273
SS		 1432
1433 // Make sure old password is correct.
1434 $oldhash = sha1($_POST['oldpassword'].$GLOBALS['login'].$GLOBALS['salt']);
fe16b01e 1435 if ($oldhash!=$GLOBALS['hash']) { echo '<script>alert("The old password is not correct.");document.location=\'?do=changepasswd\';</script>'; exit; }
45034273
SS		 1436 // Save new password
1437 $GLOBALS['salt'] = sha1(uniqid('',true).'_'.mt_rand()); // Salt renders rainbow-tables attacks useless.
1438 $GLOBALS['hash'] = sha1($_POST['setpassword'].$GLOBALS['login'].$GLOBALS['salt']);
dd484b90
A		 1439 try {
1440 writeConfig($GLOBALS, isLoggedIn());
1441 }
1442 catch(Exception $e) {
1443 error_log(
1444 'ERROR while writing config file after changing password.' . PHP_EOL .
1445 $e->getMessage()
1446 );
1447
1448 // TODO: do not handle exceptions/errors in JS.
1449 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do=tools\';</script>';
1450 exit;
1451 }
fe16b01e 1452 echo '<script>alert("Your password has been changed.");document.location=\'?do=tools\';</script>';
45034273
SS		 1453 exit;
1454 }
1455 else // show the change password form.
1456 {
45034273
SS		 1457 $PAGE->assign('linkcount',count($LINKSDB));
1458 $PAGE->assign('token',getToken());
1459 $PAGE->renderPage('changepassword');
1460 exit;
1461 }
1462 }
1463
1464 // -------- User wants to change configuration
6fc14d53 1465 if ($targetPage == Router::$PAGE_CONFIGURE)
45034273
SS		 1466 {
1467 if (!empty($_POST['title']) )
1468 {
ad6c27b7 1469 if (!tokenOk($_POST['token'])) die('Wrong token.'); // Go away!
45034273
SS		 1470 $tz = 'UTC';
1471 if (!empty($_POST['continent']) && !empty($_POST['city']))
d1e2f8e5 1472 if (isTimeZoneValid($_POST['continent'],$_POST['city']))
45034273
SS		 1473 $tz = $_POST['continent'].'/'.$_POST['city'];
1474 $GLOBALS['timezone'] = $tz;
1475 $GLOBALS['title']=$_POST['title'];
ebb2880d 1476 $GLOBALS['titleLink']=$_POST['titleLink'];
45034273
SS		 1477 $GLOBALS['redirector']=$_POST['redirector'];
1478 $GLOBALS['disablesessionprotection']=!empty($_POST['disablesessionprotection']);
bb8f712d 1479 $GLOBALS['privateLinkByDefault']=!empty($_POST['privateLinkByDefault']);
ed5b38dd 1480 $GLOBALS['config']['ENABLE_RSS_PERMALINKS']= !empty($_POST['enableRssPermalinks']);
329e0768 1481 $GLOBALS['config']['ENABLE_UPDATECHECK'] = !empty($_POST['updateCheck']);
caee7ff9 1482 $GLOBALS['config']['HIDE_PUBLIC_LINKS'] = !empty($_POST['hidePublicLinks']);
dd484b90
A		 1483 try {
1484 writeConfig($GLOBALS, isLoggedIn());
1485 }
1486 catch(Exception $e) {
1487 error_log(
1488 'ERROR while writing config file after configuration update.' . PHP_EOL .
1489 $e->getMessage()
1490 );
1491
1492 // TODO: do not handle exceptions/errors in JS.
1493 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do=tools\';</script>';
1494 exit;
1495 }
fe16b01e 1496 echo '<script>alert("Configuration was saved.");document.location=\'?do=tools\';</script>';
45034273
SS		 1497 exit;
1498 }
1499 else // Show the configuration form.
1500 {
45034273
SS		 1501 $PAGE->assign('linkcount',count($LINKSDB));
1502 $PAGE->assign('token',getToken());
5f85fcd8
A		 1503 $PAGE->assign('title', empty($GLOBALS['title']) ? '' : $GLOBALS['title'] );
1504 $PAGE->assign('redirector', empty($GLOBALS['redirector']) ? '' : $GLOBALS['redirector'] );
d1e2f8e5
V		 1505 list($timezone_form, $timezone_js) = generateTimeZoneForm($GLOBALS['timezone']);
1506 $PAGE->assign('timezone_form', $timezone_form);
45034273
SS		 1507 $PAGE->assign('timezone_js',$timezone_js);
1508 $PAGE->renderPage('configure');
1509 exit;
1510 }
1511 }
1512
1513 // -------- User wants to rename a tag or delete it
6fc14d53 1514 if ($targetPage == Router::$PAGE_CHANGETAG)
45034273 1515 {
6a6aa2b9
A		 1516 if (empty($_POST['fromtag']) || (empty($_POST['totag']) && isset($_POST['renametag']))) {
1517 $PAGE->assign('linkcount', count($LINKSDB));
1518 $PAGE->assign('token', getToken());
bdd1715b 1519 $PAGE->assign('tags', $LINKSDB->allTags());
45034273
SS		 1520 $PAGE->renderPage('changetag');
1521 exit;
1522 }
6a6aa2b9
A		 1523
1524 if (!tokenOk($_POST['token'])) {
1525 die('Wrong token.');
1526 }
45034273
SS		 1527
1528 // Delete a tag:
6a6aa2b9 1529 if (isset($_POST['deletetag']) && !empty($_POST['fromtag'])) {
45034273 1530 $needle=trim($_POST['fromtag']);
822bffce
A		 1531 // True for case-sensitive tag search.
1532 $linksToAlter = $LINKSDB->filter(LinkFilter::$FILTER_TAG, $needle, true);
45034273
SS		 1533 foreach($linksToAlter as $key=>$value)
1534 {
1535 $tags = explode(' ',trim($value['tags']));
1536 unset($tags[array_search($needle,$tags)]); // Remove tag.
1537 $value['tags']=trim(implode(' ',$tags));
1538 $LINKSDB[$key]=$value;
1539 }
2e28269b 1540 $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']);
fe16b01e 1541 echo '<script>alert("Tag was removed from '.count($linksToAlter).' links.");document.location=\'?\';</script>';
45034273
SS		 1542 exit;
1543 }
1544
1545 // Rename a tag:
6a6aa2b9 1546 if (isset($_POST['renametag']) && !empty($_POST['fromtag']) && !empty($_POST['totag'])) {
45034273 1547 $needle=trim($_POST['fromtag']);
822bffce
A		 1548 // True for case-sensitive tag search.
1549 $linksToAlter = $LINKSDB->filter(LinkFilter::$FILTER_TAG, $needle, true);
45034273
SS		 1550 foreach($linksToAlter as $key=>$value)
1551 {
1552 $tags = explode(' ',trim($value['tags']));
ad6c27b7 1553 $tags[array_search($needle,$tags)] = trim($_POST['totag']); // Replace tags value.
45034273
SS		 1554 $value['tags']=trim(implode(' ',$tags));
1555 $LINKSDB[$key]=$value;
1556 }
01e48f26 1557 $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']); // Save to disk.
fe16b01e 1558 echo '<script>alert("Tag was renamed in '.count($linksToAlter).' links.");document.location=\'?searchtags='.urlencode($_POST['totag']).'\';</script>';
45034273
SS		 1559 exit;
1560 }
1561 }
1562
ad6c27b7 1563 // -------- User wants to add a link without using the bookmarklet: Show form.
6fc14d53 1564 if ($targetPage == Router::$PAGE_ADDLINK)
45034273 1565 {
45034273
SS		 1566 $PAGE->assign('linkcount',count($LINKSDB));
1567 $PAGE->renderPage('addlink');
1568 exit;
1569 }
1570
1571 // -------- User clicked the "Save" button when editing a link: Save link to database.
1572 if (isset($_POST['save_edit']))
1573 {
5a23950c
A		 1574 // Go away!
1575 if (! tokenOk($_POST['token'])) {
1576 die('Wrong token.');
1577 }
1578 // Remove multiple spaces.
1579 $tags = trim(preg_replace('/\s\s+/', ' ', $_POST['lf_tags']));
ce354bf1
A		 1580 // Remove first '-' char in tags.
1581 $tags = preg_replace('/(^| )\-/', '$1', $tags);
5a23950c
A		 1582 // Remove duplicates.
1583 $tags = implode(' ', array_unique(explode(' ', $tags)));
1584 $linkdate = $_POST['lf_linkdate'];
feebc6d4 1585 $url = trim($_POST['lf_url']);
5a23950c
A		 1586 if (! startsWith($url, 'http:') && ! startsWith($url, 'https:')
1587 && ! startsWith($url, 'ftp:') && ! startsWith($url, 'magnet:')
1588 && ! startsWith($url, '?') && ! startsWith($url, 'javascript:')
1589 ) {
1590 $url = 'http://' . $url;
1591 }
1592
1593 $link = array(
1594 'title' => trim($_POST['lf_title']),
1595 'url' => $url,
ed853da7 1596 'description' => $_POST['lf_description'],
5a23950c
A		 1597 'private' => (isset($_POST['lf_private']) ? 1 : 0),
1598 'linkdate' => $linkdate,
1599 'tags' => str_replace(',', ' ', $tags)
1600 );
1601 // If title is empty, use the URL as title.
1602 if ($link['title'] == '') {
1603 $link['title'] = $link['url'];
1604 }
6fc14d53
A		 1605
1606 $pluginManager->executeHooks('save_link', $link);
1607
45034273 1608 $LINKSDB[$linkdate] = $link;
5a23950c 1609 $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']);
45034273
SS		 1610 pubsubhub();
1611
1612 // If we are called from the bookmarklet, we must close the popup:
d01c2342
A		 1613 if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) {
1614 echo '<script>self.close();</script>';
1615 exit;
1616 }
1617
fd50e14c 1618 $returnurl = !empty($_POST['returnurl']) ? $_POST['returnurl'] : '?';
775803a0 1619 $location = generateLocation($returnurl, $_SERVER['HTTP_HOST'], array('addlink', 'post', 'edit_link'));
5a23950c
A		 1620 // Scroll to the link which has been edited.
1621 $location .= '#' . smallHash($_POST['lf_linkdate']);
1622 // After saving the link, redirect to the page the user was on.
1623 header('Location: '. $location);
45034273
SS		 1624 exit;
1625 }
1626
1627 // -------- User clicked the "Cancel" button when editing a link.
1628 if (isset($_POST['cancel_edit']))
1629 {
ad6c27b7 1630 // If we are called from the bookmarklet, we must close the popup:
d33c5d4c 1631 if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) { echo '<script>self.close();</script>'; exit; }
45034273 1632 $returnurl = ( isset($_POST['returnurl']) ? $_POST['returnurl'] : '?' );
b342b2a4 1633 $returnurl .= '#'.smallHash($_POST['lf_linkdate']); // Scroll to the link which has been edited.
775803a0 1634 $returnurl = generateLocation($returnurl, $_SERVER['HTTP_HOST'], array('addlink', 'post', 'edit_link'));
45034273
SS		 1635 header('Location: '.$returnurl); // After canceling, redirect to the page the user was on.
1636 exit;
1637 }
1638
ad6c27b7 1639 // -------- User clicked the "Delete" button when editing a link: Delete link from database.
45034273
SS		 1640 if (isset($_POST['delete_link']))
1641 {
1642 if (!tokenOk($_POST['token'])) die('Wrong token.');
1643 // We do not need to ask for confirmation:
ad6c27b7 1644 // - confirmation is handled by JavaScript
45034273
SS		 1645 // - we are protected from XSRF by the token.
1646 $linkdate=$_POST['lf_linkdate'];
6fc14d53
A		 1647
1648 $pluginManager->executeHooks('delete_link', $LINKSDB[$linkdate]);
1649
45034273 1650 unset($LINKSDB[$linkdate]);
01e48f26 1651 $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']); // save to disk
45034273
SS		 1652
1653 // If we are called from the bookmarklet, we must close the popup:
d33c5d4c 1654 if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) { echo '<script>self.close();</script>'; exit; }
d528433d 1655 // Pick where we're going to redirect
1656 // =============================================================
1657 // Basically, we can't redirect to where we were previously if it was a permalink
1658 // or an edit_link, because it would 404.
1659 // Cases:
1660 // - / : nothing in $_GET, redirect to self
1661 // - /?page : redirect to self
d33c5d4c 1662 // - /?searchterm : redirect to self (there might be other links)
d528433d 1663 // - /?searchtags : redirect to self
1664 // - /permalink : redirect to / (the link does not exist anymore)
1665 // - /?edit_link : redirect to / (the link does not exist anymore)
1666 // PHP treats the permalink as a $_GET variable, so we need to check if every condition for self
1667 // redirect is not satisfied, and only then redirect to /
1668 $location = "?";
1669 // Self redirection
775803a0
A		 1670 if (count($_GET) == 0
1671 || isset($_GET['page'])
1672 || isset($_GET['searchterm'])
1673 || isset($_GET['searchtags'])
1674 ) {
d528433d 1675 if (isset($_POST['returnurl'])) {
1676 $location = $_POST['returnurl']; // Handle redirects given by the form
775803a0
A		 1677 } else {
1678 $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('delete_link'));
d528433d 1679 }
1680 }
1681
1682 header('Location: ' . $location); // After deleting the link, redirect to appropriate location
45034273
SS		 1683 exit;
1684 }
1685
1686 // -------- User clicked the "EDIT" button on a link: Display link edit form.
1687 if (isset($_GET['edit_link']))
1688 {
1689 $link = $LINKSDB[$_GET['edit_link']]; // Read database
1690 if (!$link) { header('Location: ?'); exit; } // Link not found in database.
6fc14d53
A		 1691 $data = array(
1692 'linkcount' => count($LINKSDB),
1693 'link' => $link,
1694 'link_is_new' => false,
1695 'token' => getToken(),
1696 'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
1697 'tags' => $LINKSDB->allTags(),
1698 );
1699 $pluginManager->executeHooks('render_editlink', $data);
1700
1701 foreach ($data as $key => $value) {
1702 $PAGE->assign($key, $value);
1703 }
1704
45034273
SS		 1705 $PAGE->renderPage('editlink');
1706 exit;
1707 }
1708
1709 // -------- User want to post a new link: Display link edit form.
d9d776af 1710 if (isset($_GET['post'])) {
1557cefb 1711 $url = cleanup_url(escape($_GET['post']));
45034273
SS		 1712
1713 $link_is_new = false;
9e1724f1 1714 // Check if URL is not already in database (in this case, we will edit the existing link)
ef591e7e 1715 $link = $LINKSDB->getLinkFromUrl($url);
45034273
SS		 1716 if (!$link)
1717 {
9e1724f1 1718 $link_is_new = true;
45034273 1719 $linkdate = strval(date('Ymd_His'));
9e1724f1 1720 // Get title if it was provided in URL (by the bookmarklet).
739dc243 1721 $title = empty($_GET['title']) ? '' : escape($_GET['title']);
9e1724f1 1722 // Get description if it was provided in URL (by the bookmarklet). [Bronco added that]
739dc243
A		 1723 $description = empty($_GET['description']) ? '' : escape($_GET['description']);
1724 $tags = empty($_GET['tags']) ? '' : escape($_GET['tags']);
1725 $private = !empty($_GET['private']) && $_GET['private'] === "1" ? 1 : 0;
26c50346 1726 // If this is an HTTP(S) link, we try go get the page to extract the title (otherwise we will to straight to the edit form.)
ef591e7e 1727 if (empty($title) && strpos(get_url_scheme($url), 'http') !== false) {
451314eb 1728 // Short timeout to keep the application responsive
1557cefb 1729 list($headers, $content) = get_http_response($url, 4);
451314eb 1730 if (strpos($headers[0], '200 OK') !== false) {
1557cefb
A		 1731 // Retrieve charset.
1732 $charset = get_charset($headers, $content);
1733 // Extract title.
1734 $title = html_extract_title($content);
1735 // Re-encode title in utf-8 if necessary.
1736 if (! empty($title) && $charset != 'utf-8') {
1737 $title = mb_convert_encoding($title, $charset, 'utf-8');
9e1724f1
A		 1738 }
1739 }
45034273 1740 }
1557cefb 1741
9e1724f1
A		 1742 if ($url == '') {
1743 $url = '?' . smallHash($linkdate);
1744 $title = 'Note: ';
27646ca5 1745 }
1557cefb 1746
9e1724f1
A		 1747 $link = array(
1748 'linkdate' => $linkdate,
1749 'title' => $title,
ef591e7e 1750 'url' => $url,
9e1724f1
A		 1751 'description' => $description,
1752 'tags' => $tags,
1753 'private' => $private
1754 );
45034273
SS		 1755 }
1756
6fc14d53
A		 1757 $data = array(
1758 'linkcount' => count($LINKSDB),
1759 'link' => $link,
1760 'link_is_new' => $link_is_new,
1761 'token' => getToken(), // XSRF protection.
1762 'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
1763 'source' => (isset($_GET['source']) ? $_GET['source'] : ''),
1764 'tags' => $LINKSDB->allTags(),
1765 );
1766 $pluginManager->executeHooks('render_editlink', $data);
1767
1768 foreach ($data as $key => $value) {
1769 $PAGE->assign($key, $value);
1770 }
1771
45034273
SS		 1772 $PAGE->renderPage('editlink');
1773 exit;
1774 }
1775
1776 // -------- Export as Netscape Bookmarks HTML file.
6fc14d53 1777 if ($targetPage == Router::$PAGE_EXPORT)
45034273
SS		 1778 {
1779 if (empty($_GET['what']))
1780 {
45034273
SS		 1781 $PAGE->assign('linkcount',count($LINKSDB));
1782 $PAGE->renderPage('export');
1783 exit;
1784 }
1785 $exportWhat=$_GET['what'];
ad6c27b7 1786 if (!array_intersect(array('all','public','private'),array($exportWhat))) die('What are you trying to export???');
45034273
SS		 1787
1788 header('Content-Type: text/html; charset=utf-8');
1789 header('Content-disposition: attachment; filename=bookmarks_'.$exportWhat.'_'.strval(date('Ymd_His')).'.html');
1790 $currentdate=date('Y/m/d H:i:s');
1791 echo <<<HTML
1792<!DOCTYPE NETSCAPE-Bookmark-file-1>
1793<!-- This is an automatically generated file.
1794 It will be read and overwritten.
1795 DO NOT EDIT! -->
1796<!-- Shaarli {$exportWhat} bookmarks export on {$currentdate} -->
1797<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8">
1798<TITLE>Bookmarks</TITLE>
1799<H1>Bookmarks</H1>
1800HTML;
1801 foreach($LINKSDB as $link)
1802 {
1803 if ($exportWhat=='all' ||
1804 ($exportWhat=='private' && $link['private']!=0) ||
1805 ($exportWhat=='public' && $link['private']==0))
1806 {
205a4277
V		 1807 $date = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $link['linkdate']);
1808 echo '<DT><A HREF="'.$link['url'].'" ADD_DATE="'.$date->getTimestamp().'" PRIVATE="'.$link['private'].'"';
5f85fcd8
A		 1809 if ($link['tags']!='') echo ' TAGS="'.str_replace(' ',',',$link['tags']).'"';
1810 echo '>'.$link['title']."</A>\n";
1811 if ($link['description']!='') echo '<DD>'.$link['description']."\n";
45034273
SS		 1812 }
1813 }
1814 exit;
1815 }
1816
1817 // -------- User is uploading a file for import
1818 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=upload'))
1819 {
1820 // If file is too big, some form field may be missing.
1821 if (!isset($_POST['token']) || (!isset($_FILES)) || (isset($_FILES['filetoupload']['size']) && $_FILES['filetoupload']['size']==0))
1822 {
1823 $returnurl = ( empty($_SERVER['HTTP_REFERER']) ? '?' : $_SERVER['HTTP_REFERER'] );
5f85fcd8 1824 echo '<script>alert("The file you are trying to upload is probably bigger than what this webserver can accept ('.getMaxFileSize().' bytes). Please upload in smaller chunks.");document.location=\''.escape($returnurl).'\';</script>';
45034273
SS		 1825 exit;
1826 }
1827 if (!tokenOk($_POST['token'])) die('Wrong token.');
1828 importFile();
1829 exit;
1830 }
1831
1832 // -------- Show upload/import dialog:
6fc14d53 1833 if ($targetPage == Router::$PAGE_IMPORT)
45034273 1834 {
45034273
SS		 1835 $PAGE->assign('linkcount',count($LINKSDB));
1836 $PAGE->assign('token',getToken());
1837 $PAGE->assign('maxfilesize',getMaxFileSize());
1838 $PAGE->renderPage('import');
1839 exit;
1840 }
1841
dea0ba28
A		 1842 // Plugin administration page
1843 if ($targetPage == Router::$PAGE_PLUGINSADMIN) {
1844 $pluginMeta = $pluginManager->getPluginsMeta();
1845
1846 // Split plugins into 2 arrays: ordered enabled plugins and disabled.
1847 $enabledPlugins = array_filter($pluginMeta, function($v) { return $v['order'] !== false; });
1848 // Load parameters.
1849 $enabledPlugins = load_plugin_parameter_values($enabledPlugins, $GLOBALS['plugins']);
1850 uasort(
1851 $enabledPlugins,
1852 function($a, $b) { return $a['order'] - $b['order']; }
1853 );
1854 $disabledPlugins = array_filter($pluginMeta, function($v) { return $v['order'] === false; });
1855
1856 $PAGE->assign('enabledPlugins', $enabledPlugins);
1857 $PAGE->assign('disabledPlugins', $disabledPlugins);
1858 $PAGE->renderPage('pluginsadmin');
1859 exit;
1860 }
1861
1862 // Plugin administration form action
1863 if ($targetPage == Router::$PAGE_SAVE_PLUGINSADMIN) {
1864 try {
1865 if (isset($_POST['parameters_form'])) {
1866 unset($_POST['parameters_form']);
1867 foreach ($_POST as $param => $value) {
1868 $GLOBALS['plugins'][$param] = escape($value);
1869 }
1870 }
1871 else {
1872 $GLOBALS['config']['ENABLED_PLUGINS'] = save_plugin_config($_POST);
1873 }
1874 writeConfig($GLOBALS, isLoggedIn());
1875 }
1876 catch (Exception $e) {
1877 error_log(
1878 'ERROR while saving plugin configuration:.' . PHP_EOL .
1879 $e->getMessage()
1880 );
1881
1882 // TODO: do not handle exceptions/errors in JS.
59edea42 1883 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do='. Router::$PAGE_PLUGINSADMIN .'\';</script>';
dea0ba28
A		 1884 exit;
1885 }
1886 header('Location: ?do='. Router::$PAGE_PLUGINSADMIN);
1887 exit;
1888 }
1889
45034273 1890 // -------- Otherwise, simply display search form and links:
6fc14d53 1891 showLinkList($PAGE, $LINKSDB);
45034273
SS		 1892 exit;
1893}
1894
1895// -----------------------------------------------------------------------------------------------
1896// Process the import file form.
1897function importFile()
1898{
02ad8fb6 1899 if (!isLoggedIn()) { die('Not allowed.'); }
9f15ca9e 1900 $LINKSDB = new LinkDB(
9c8752a2 1901 $GLOBALS['config']['DATASTORE'],
02ad8fb6 1902 isLoggedIn(),
90e5bd65
A		 1903 $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
1904 $GLOBALS['redirector']
9f15ca9e 1905 );
45034273
SS		 1906 $filename=$_FILES['filetoupload']['name'];
1907 $filesize=$_FILES['filetoupload']['size'];
1908 $data=file_get_contents($_FILES['filetoupload']['tmp_name']);
ad6c27b7 1909 $private = (empty($_POST['private']) ? 0 : 1); // Should the links be imported as private?
1910 $overwrite = !empty($_POST['overwrite']) ; // Should the imported links overwrite existing ones?
45034273
SS		 1911 $import_count=0;
1912
1913 // Sniff file type:
1914 $type='unknown';
1915 if (startsWith($data,'<!DOCTYPE NETSCAPE-Bookmark-file-1>')) $type='netscape'; // Netscape bookmark file (aka Firefox).
1916
1917 // Then import the bookmarks.
1918 if ($type=='netscape')
1919 {
1920 // This is a standard Netscape-style bookmark file.
ad6c27b7 1921 // This format is supported by all browsers (except IE, of course), also Delicious, Diigo and others.
45034273
SS		 1922 foreach(explode('<DT>',$data) as $html) // explode is very fast
1923 {
1924 $link = array('linkdate'=>'','title'=>'','url'=>'','description'=>'','tags'=>'','private'=>0);
1925 $d = explode('<DD>',$html);
1926 if (startswith($d[0],'<A '))
1927 {
1928 $link['description'] = (isset($d[1]) ? html_entity_decode(trim($d[1]),ENT_QUOTES,'UTF-8') : ''); // Get description (optional)
1929 preg_match('!<A .*?>(.*?)</A>!i',$d[0],$matches); $link['title'] = (isset($matches[1]) ? trim($matches[1]) : ''); // Get title
1930 $link['title'] = html_entity_decode($link['title'],ENT_QUOTES,'UTF-8');
1931 preg_match_all('! ([A-Z_]+)=\"(.*?)"!i',$html,$matches,PREG_SET_ORDER); // Get all other attributes
1932 $raw_add_date=0;
1933 foreach($matches as $m)
1934 {
1935 $attr=$m[1]; $value=$m[2];
1936 if ($attr=='HREF') $link['url']=html_entity_decode($value,ENT_QUOTES,'UTF-8');
fc93ae1d
AA		 1937 elseif ($attr=='ADD_DATE')
1938 {
1939 $raw_add_date=intval($value);
1940 if ($raw_add_date>30000000000) $raw_add_date/=1000; //If larger than year 2920, then was likely stored in milliseconds instead of seconds
1941 }
45034273
SS		 1942 elseif ($attr=='PRIVATE') $link['private']=($value=='0'?0:1);
1943 elseif ($attr=='TAGS') $link['tags']=html_entity_decode(str_replace(',',' ',$value),ENT_QUOTES,'UTF-8');
1944 }
1945 if ($link['url']!='')
1946 {
1947 if ($private==1) $link['private']=1;
1948 $dblink = $LINKSDB->getLinkFromUrl($link['url']); // See if the link is already in database.
1949 if ($dblink==false)
1950 { // Link not in database, let's import it...
1951 if (empty($raw_add_date)) $raw_add_date=time(); // In case of shitty bookmark file with no ADD_DATE
1952
1953 // Make sure date/time is not already used by another link.
1954 // (Some bookmark files have several different links with the same ADD_DATE)
ad6c27b7 1955 // We increment date by 1 second until we find a date which is not used in DB.
45034273
SS		 1956 // (so that links that have the same date/time are more or less kept grouped by date, but do not conflict.)
1957 while (!empty($LINKSDB[date('Ymd_His',$raw_add_date)])) { $raw_add_date++; }// Yes, I know it's ugly.
1958 $link['linkdate']=date('Ymd_His',$raw_add_date);
1959 $LINKSDB[$link['linkdate']] = $link;
1960 $import_count++;
1961 }
ad6c27b7 1962 else // Link already present in database.
45034273
SS		 1963 {
1964 if ($overwrite)
1965 { // If overwrite is required, we import link data, except date/time.
1966 $link['linkdate']=$dblink['linkdate'];
1967 $LINKSDB[$link['linkdate']] = $link;
1968 $import_count++;
1969 }
1970 }
1971
1972 }
1973 }
1974 }
01e48f26 1975 $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']);
45034273 1976
fe16b01e 1977 echo '<script>alert("File '.json_encode($filename).' ('.$filesize.' bytes) was successfully processed: '.$import_count.' links imported.");document.location=\'?\';</script>';
45034273
SS		 1978 }
1979 else
1980 {
fe16b01e 1981 echo '<script>alert("File '.json_encode($filename).' ('.$filesize.' bytes) has an unknown file format. Nothing was imported.");document.location=\'?\';</script>';
45034273
SS		 1982 }
1983}
1984
1985// -----------------------------------------------------------------------------------------------
1986// Template for the list of links (<div id="linklist">)
1987// This function fills all the necessary fields in the $PAGE for the template 'linklist.html'
1988function buildLinkList($PAGE,$LINKSDB)
1989{
c51fae92
A		 1990 // Filter link database according to parameters.
1991 $searchtags = !empty($_GET['searchtags']) ? escape($_GET['searchtags']) : '';
1992 $searchterm = !empty($_GET['searchterm']) ? escape(trim($_GET['searchterm'])) : '';
822bffce
A		 1993 $privateonly = !empty($_SESSION['privateonly']) ? true : false;
1994
c51fae92
A		 1995 // Search tags + fullsearch.
1996 if (! empty($searchtags) && ! empty($searchterm)) {
1997 $linksToDisplay = $LINKSDB->filter(
1998 LinkFilter::$FILTER_TAG | LinkFilter::$FILTER_TEXT,
1999 array($searchtags, $searchterm),
2000 false,
2001 $privateonly
2002 );
822bffce 2003 }
c51fae92
A		 2004 // Search by tags.
2005 elseif (! empty($searchtags)) {
2006 $linksToDisplay = $LINKSDB->filter(
2007 LinkFilter::$FILTER_TAG,
2008 $searchtags,
2009 false,
2010 $privateonly
2011 );
2012 }
2013 // Fulltext search.
2014 elseif (! empty($searchterm)) {
2015 $linksToDisplay = $LINKSDB->filter(
2016 LinkFilter::$FILTER_TEXT,
2017 $searchterm,
2018 false,
2019 $privateonly
2020 );
822bffce
A		 2021 }
2022 // Detect smallHashes in URL.
c51fae92
A		 2023 elseif (! empty($_SERVER['QUERY_STRING'])
2024 && preg_match('/[a-zA-Z0-9-_@]{6}(&.+?)?/', $_SERVER['QUERY_STRING'])
2025 ) {
2026 $linksToDisplay = $LINKSDB->filter(
2027 LinkFilter::$FILTER_HASH,
2028 substr(trim($_SERVER["QUERY_STRING"], '/'), 0, 6)
2029 );
822bffce
A		 2030
2031 if (count($linksToDisplay) == 0) {
f4c84ad7 2032 $PAGE->render404('The link you are trying to reach does not exist or has been deleted.');
45034273
SS		 2033 exit;
2034 }
45034273 2035 }
822bffce
A		 2036 // Otherwise, display without filtering.
2037 else {
2038 $linksToDisplay = $LINKSDB->filter('', '', false, $privateonly);
45034273
SS		 2039 }
2040
2041 // ---- Handle paging.
822bffce
A		 2042 $keys = array();
2043 foreach ($linksToDisplay as $key => $value) {
2044 $keys[] = $key;
2045 }
45034273
SS		 2046
2047 // If there is only a single link, we change on-the-fly the title of the page.
822bffce
A		 2048 if (count($linksToDisplay) == 1) {
2049 $GLOBALS['pagetitle'] = $linksToDisplay[$keys[0]]['title'].' - '.$GLOBALS['title'];
2050 }
45034273
SS		 2051
2052 // Select articles according to paging.
822bffce
A		 2053 $pagecount = ceil(count($keys) / $_SESSION['LINKS_PER_PAGE']);
2054 $pagecount = $pagecount == 0 ? 1 : $pagecount;
2055 $page= empty($_GET['page']) ? 1 : intval($_GET['page']);
2056 $page = $page < 1 ? 1 : $page;
2057 $page = $page > $pagecount ? $pagecount : $page;
2058 // Start index.
2059 $i = ($page-1) * $_SESSION['LINKS_PER_PAGE'];
2060 $end = $i + $_SESSION['LINKS_PER_PAGE'];
2061 $linkDisp = array();
45034273
SS		 2062 while ($i<$end && $i<count($keys))
2063 {
2064 $link = $linksToDisplay[$keys[$i]];
90e5bd65 2065 $link['description'] = format_description($link['description'], $GLOBALS['redirector']);
822bffce
A		 2066 $classLi = ($i % 2) != 0 ? '' : 'publicLinkHightLight';
2067 $link['class'] = $link['private'] == 0 ? $classLi : 'private';
205a4277
V		 2068 $date = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $link['linkdate']);
2069 $link['timestamp'] = $date->getTimestamp();
822bffce 2070 $taglist = explode(' ', $link['tags']);
a5752e77 2071 uasort($taglist, 'strcasecmp');
822bffce 2072 $link['taglist'] = $taglist;
6fc14d53 2073 $link['shorturl'] = smallHash($link['linkdate']);
822bffce
A		 2074 // Check for both signs of a note: starting with ? and 7 chars long.
2075 if ($link['url'][0] === '?' &&
2076 strlen($link['url']) === 7) {
2077 $link['url'] = index_url($_SERVER) . $link['url'];
b47f515a 2078 }
d33c5d4c 2079
45034273
SS		 2080 $linkDisp[$keys[$i]] = $link;
2081 $i++;
2082 }
bb8f712d 2083
45034273 2084 // Compute paging navigation
c51fae92
A		 2085 $searchtagsUrl = empty($searchtags) ? '' : '&searchtags=' . urlencode($searchtags);
2086 $searchtermUrl = empty($searchterm) ? '' : '&searchterm=' . urlencode($searchterm);
822bffce
A		 2087 $previous_page_url = '';
2088 if ($i != count($keys)) {
c51fae92 2089 $previous_page_url = '?page=' . ($page+1) . $searchtermUrl . $searchtagsUrl;
822bffce
A		 2090 }
2091 $next_page_url='';
2092 if ($page>1) {
c51fae92 2093 $next_page_url = '?page=' . ($page-1) . $searchtermUrl . $searchtagsUrl;
822bffce 2094 }
45034273 2095
c51fae92 2096 $token = isLoggedIn() ? getToken() : '';
bb8f712d 2097
45034273 2098 // Fill all template fields.
6fc14d53
A		 2099 $data = array(
2100 'linkcount' => count($LINKSDB),
2101 'previous_page_url' => $previous_page_url,
2102 'next_page_url' => $next_page_url,
2103 'page_current' => $page,
2104 'page_max' => $pagecount,
2105 'result_count' => count($linksToDisplay),
c51fae92
A		 2106 'search_term' => $searchterm,
2107 'search_tags' => $searchtags,
6fc14d53
A		 2108 'redirector' => empty($GLOBALS['redirector']) ? '' : $GLOBALS['redirector'], // Optional redirector URL.
2109 'token' => $token,
2110 'links' => $linkDisp,
2111 'tags' => $LINKSDB->allTags(),
2112 );
18cca483
A		 2113 // FIXME! temporary fix - see #399.
2114 if (!empty($GLOBALS['pagetitle']) && count($linkDisp) == 1) {
2115 $data['pagetitle'] = $GLOBALS['pagetitle'];
2116 }
6fc14d53
A		 2117
2118 $pluginManager = PluginManager::getInstance();
2119 $pluginManager->executeHooks('render_linklist', $data, array('loggedin' => isLoggedIn()));
2120
2121 foreach ($data as $key => $value) {
2122 $PAGE->assign($key, $value);
2123 }
2124
45034273
SS		 2125 return;
2126}
2127
2128// Compute the thumbnail for a link.
bb8f712d 2129//
ad6c27b7 2130// With a link to the original URL.
45034273 2131// Understands various services (youtube.com...)
ad6c27b7 2132// Input: $url = URL for which the thumbnail must be found.
45034273
SS		 2133// $href = if provided, this URL will be followed instead of $url
2134// Returns an associative array with thumbnail attributes (src,href,width,height,style,alt)
2135// Some of them may be missing.
2136// Return an empty array if no thumbnail available.
2137function computeThumbnail($url,$href=false)
2138{
2139 if (!$GLOBALS['config']['ENABLE_THUMBNAILS']) return array();
2140 if ($href==false) $href=$url;
2141
2142 // For most hosts, the URL of the thumbnail can be easily deduced from the URL of the link.
ad6c27b7 2143 // (e.g. http://www.youtube.com/watch?v=spVypYk4kto ---> http://img.youtube.com/vi/spVypYk4kto/default.jpg )
45034273
SS		 2144 // ^^^^^^^^^^^ ^^^^^^^^^^^
2145 $domain = parse_url($url,PHP_URL_HOST);
2146 if ($domain=='youtube.com' || $domain=='www.youtube.com')
2147 {
2148 parse_str(parse_url($url,PHP_URL_QUERY), $params); // Extract video ID and get thumbnail
1a663a0f 2149 if (!empty($params['v'])) return array('src'=>'https://img.youtube.com/vi/'.$params['v'].'/default.jpg',
45034273
SS		 2150 'href'=>$href,'width'=>'120','height'=>'90','alt'=>'YouTube thumbnail');
2151 }
2152 if ($domain=='youtu.be') // Youtube short links
2153 {
2154 $path = parse_url($url,PHP_URL_PATH);
1a663a0f 2155 return array('src'=>'https://img.youtube.com/vi'.$path.'/default.jpg',
bb8f712d 2156 'href'=>$href,'width'=>'120','height'=>'90','alt'=>'YouTube thumbnail');
45034273
SS		 2157 }
2158 if ($domain=='pix.toile-libre.org') // pix.toile-libre.org image hosting
2159 {
2160 parse_str(parse_url($url,PHP_URL_QUERY), $params); // Extract image filename.
2161 if (!empty($params) && !empty($params['img'])) return array('src'=>'http://pix.toile-libre.org/upload/thumb/'.urlencode($params['img']),
bb8f712d
KT		 2162 'href'=>$href,'style'=>'max-width:120px; max-height:150px','alt'=>'pix.toile-libre.org thumbnail');
2163 }
2164
45034273
SS		 2165 if ($domain=='imgur.com')
2166 {
2167 $path = parse_url($url,PHP_URL_PATH);
2168 if (startsWith($path,'/a/')) return array(); // Thumbnails for albums are not available.
1a663a0f 2169 if (startsWith($path,'/r/')) return array('src'=>'https://i.imgur.com/'.basename($path).'s.jpg',
45034273 2170 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
1a663a0f 2171 if (startsWith($path,'/gallery/')) return array('src'=>'https://i.imgur.com'.substr($path,8).'s.jpg',
45034273
SS		 2172 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
2173
1a663a0f 2174 if (substr_count($path,'/')==1) return array('src'=>'https://i.imgur.com/'.substr($path,1).'s.jpg',
45034273
SS		 2175 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
2176 }
2177 if ($domain=='i.imgur.com')
2178 {
2179 $pi = pathinfo(parse_url($url,PHP_URL_PATH));
1a663a0f 2180 if (!empty($pi['filename'])) return array('src'=>'https://i.imgur.com/'.$pi['filename'].'s.jpg',
45034273
SS		 2181 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
2182 }
2183 if ($domain=='dailymotion.com' || $domain=='www.dailymotion.com')
2184 {
2185 if (strpos($url,'dailymotion.com/video/')!==false)
2186 {
2187 $thumburl=str_replace('dailymotion.com/video/','dailymotion.com/thumbnail/video/',$url);
2188 return array('src'=>$thumburl,
2189 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'DailyMotion thumbnail');
2190 }
2191 }
2192 if (endsWith($domain,'.imageshack.us'))
2193 {
2194 $ext=strtolower(pathinfo($url,PATHINFO_EXTENSION));
2195 if ($ext=='jpg' || $ext=='jpeg' || $ext=='png' || $ext=='gif')
2196 {
2197 $thumburl = substr($url,0,strlen($url)-strlen($ext)).'th.'.$ext;
2198 return array('src'=>$thumburl,
2199 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'imageshack.us thumbnail');
2200 }
2201 }
2202
2203 // Some other hosts are SLOW AS HELL and usually require an extra HTTP request to get the thumbnail URL.
2204 // So we deport the thumbnail generation in order not to slow down page generation
2205 // (and we also cache the thumbnail)
2206
2207 if (!$GLOBALS['config']['ENABLE_LOCALCACHE']) return array(); // If local cache is disabled, no thumbnails for services which require the use a local cache.
2208
2209 if ($domain=='flickr.com' || endsWith($domain,'.flickr.com')
2210 || $domain=='vimeo.com'
2211 || $domain=='ted.com' || endsWith($domain,'.ted.com')
2212 || $domain=='xkcd.com' || endsWith($domain,'.xkcd.com')
2213 )
2214 {
2215 if ($domain=='vimeo.com')
ad6c27b7 2216 { // Make sure this vimeo URL points to a video (/xxx... where xxx is numeric)
45034273
SS		 2217 $path = parse_url($url,PHP_URL_PATH);
2218 if (!preg_match('!/\d+.+?!',$path)) return array(); // This is not a single video URL.
2219 }
2220 if ($domain=='xkcd.com' || endsWith($domain,'.xkcd.com'))
ad6c27b7 2221 { // Make sure this URL points to a single comic (/xxx... where xxx is numeric)
45034273
SS		 2222 $path = parse_url($url,PHP_URL_PATH);
2223 if (!preg_match('!/\d+.+?!',$path)) return array();
2224 }
2225 if ($domain=='ted.com' || endsWith($domain,'.ted.com'))
ad6c27b7 2226 { // Make sure this TED URL points to a video (/talks/...)
45034273
SS		 2227 $path = parse_url($url,PHP_URL_PATH);
2228 if ("/talks/" !== substr($path,0,7)) return array(); // This is not a single video URL.
2229 }
2230 $sign = hash_hmac('sha256', $url, $GLOBALS['salt']); // We use the salt to sign data (it's random, secret, and specific to each installation)
482d67bd 2231 return array('src'=>index_url($_SERVER).'?do=genthumbnail&hmac='.$sign.'&url='.urlencode($url),
45034273
SS		 2232 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'thumbnail');
2233 }
2234
2235 // For all other, we try to make a thumbnail of links ending with .jpg/jpeg/png/gif
2236 // Technically speaking, we should download ALL links and check their Content-Type to see if they are images.
2237 // But using the extension will do.
2238 $ext=strtolower(pathinfo($url,PATHINFO_EXTENSION));
2239 if ($ext=='jpg' || $ext=='jpeg' || $ext=='png' || $ext=='gif')
2240 {
2241 $sign = hash_hmac('sha256', $url, $GLOBALS['salt']); // We use the salt to sign data (it's random, secret, and specific to each installation)
482d67bd 2242 return array('src'=>index_url($_SERVER).'?do=genthumbnail&hmac='.$sign.'&url='.urlencode($url),
bb8f712d 2243 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'thumbnail');
45034273
SS		 2244 }
2245 return array(); // No thumbnail.
2246
2247}
2248
2249
2250// Returns the HTML code to display a thumbnail for a link
2251// with a link to the original URL.
2252// Understands various services (youtube.com...)
ad6c27b7 2253// Input: $url = URL for which the thumbnail must be found.
45034273
SS		 2254// $href = if provided, this URL will be followed instead of $url
2255// Returns '' if no thumbnail available.
2256function thumbnail($url,$href=false)
2257{
2258 $t = computeThumbnail($url,$href);
2259 if (count($t)==0) return ''; // Empty array = no thumbnail for this URL.
bb8f712d 2260
5f85fcd8
A		 2261 $html='<a href="'.escape($t['href']).'"><img src="'.escape($t['src']).'"';
2262 if (!empty($t['width'])) $html.=' width="'.escape($t['width']).'"';
2263 if (!empty($t['height'])) $html.=' height="'.escape($t['height']).'"';
2264 if (!empty($t['style'])) $html.=' style="'.escape($t['style']).'"';
2265 if (!empty($t['alt'])) $html.=' alt="'.escape($t['alt']).'"';
45034273
SS		 2266 $html.='></a>';
2267 return $html;
2268}
2269
45034273
SS		 2270// Returns the HTML code to display a thumbnail for a link
2271// for the picture wall (using lazy image loading)
2272// Understands various services (youtube.com...)
ad6c27b7 2273// Input: $url = URL for which the thumbnail must be found.
45034273
SS		 2274// $href = if provided, this URL will be followed instead of $url
2275// Returns '' if no thumbnail available.
2276function lazyThumbnail($url,$href=false)
2277{
bb8f712d 2278 $t = computeThumbnail($url,$href);
45034273
SS		 2279 if (count($t)==0) return ''; // Empty array = no thumbnail for this URL.
2280
5f85fcd8 2281 $html='<a href="'.escape($t['href']).'">';
bb8f712d 2282
34047d23 2283 // Lazy image
5f85fcd8 2284 $html.='<img class="b-lazy" src="#" data-src="'.escape($t['src']).'"';
858c5c2b 2285
5f85fcd8
A		 2286 if (!empty($t['width'])) $html.=' width="'.escape($t['width']).'"';
2287 if (!empty($t['height'])) $html.=' height="'.escape($t['height']).'"';
2288 if (!empty($t['style'])) $html.=' style="'.escape($t['style']).'"';
2289 if (!empty($t['alt'])) $html.=' alt="'.escape($t['alt']).'"';
45034273 2290 $html.='>';
bb8f712d 2291
ad6c27b7 2292 // No-JavaScript fallback.
5f85fcd8
A		 2293 $html.='<noscript><img src="'.escape($t['src']).'"';
2294 if (!empty($t['width'])) $html.=' width="'.escape($t['width']).'"';
2295 if (!empty($t['height'])) $html.=' height="'.escape($t['height']).'"';
2296 if (!empty($t['style'])) $html.=' style="'.escape($t['style']).'"';
2297 if (!empty($t['alt'])) $html.=' alt="'.escape($t['alt']).'"';
45034273 2298 $html.='></noscript></a>';
bb8f712d 2299
45034273
SS		 2300 return $html;
2301}
2302
2303
2304// -----------------------------------------------------------------------------------------------
2305// Installation
2306// This function should NEVER be called if the file data/config.php exists.
2307function install()
2308{
2309 // On free.fr host, make sure the /sessions directory exists, otherwise login will not work.
f6a6ca0a 2310 if (endsWith($_SERVER['HTTP_HOST'],'.free.fr') && !is_dir($_SERVER['DOCUMENT_ROOT'].'/sessions')) mkdir($_SERVER['DOCUMENT_ROOT'].'/sessions',0705);
45034273 2311
f37664a2
SS		 2312
2313 // This part makes sure sessions works correctly.
2314 // (Because on some hosts, session.save_path may not be set correctly,
2315 // or we may not have write access to it.)
2316 if (isset($_GET['test_session']) && ( !isset($_SESSION) || !isset($_SESSION['session_tested']) || $_SESSION['session_tested']!='Working'))
2317 { // Step 2: Check if data in session is correct.
2318 echo '<pre>Sessions do not seem to work correctly on your server.<br>';
2319 echo 'Make sure the variable session.save_path is set correctly in your php config, and that you have write access to it.<br>';
01ec1791 2320 echo 'It currently points to '.session_save_path().'<br>';
2321 echo 'Check that the hostname used to access Shaarli contains a dot. On some browsers, accessing your server via a hostname like \'localhost\' or any custom hostname without a dot causes cookie storage to fail. We recommend accessing your server via it\'s IP address or Fully Qualified Domain Name.<br>';
2322 echo '<br><a href="?">Click to try again.</a></pre>';
f37664a2
SS		 2323 die;
2324 }
2325 if (!isset($_SESSION['session_tested']))
2326 { // Step 1 : Try to store data in session and reload page.
2327 $_SESSION['session_tested'] = 'Working'; // Try to set a variable in session.
482d67bd 2328 header('Location: '.index_url($_SERVER).'?test_session'); // Redirect to check stored data.
f37664a2
SS		 2329 }
2330 if (isset($_GET['test_session']))
ad6c27b7 2331 { // Step 3: Sessions are OK. Remove test parameter from URL.
482d67bd 2332 header('Location: '.index_url($_SERVER));
f37664a2
SS		 2333 }
2334
2335
45034273
SS		 2336 if (!empty($_POST['setlogin']) && !empty($_POST['setpassword']))
2337 {
2338 $tz = 'UTC';
d1e2f8e5
V		 2339 if (!empty($_POST['continent']) && !empty($_POST['city'])) {
2340 if (isTimeZoneValid($_POST['continent'], $_POST['city'])) {
45034273 2341 $tz = $_POST['continent'].'/'.$_POST['city'];
d1e2f8e5
V		 2342 }
2343 }
45034273
SS		 2344 $GLOBALS['timezone'] = $tz;
2345 // Everything is ok, let's create config file.
2346 $GLOBALS['login'] = $_POST['setlogin'];
2347 $GLOBALS['salt'] = sha1(uniqid('',true).'_'.mt_rand()); // Salt renders rainbow-tables attacks useless.
2348 $GLOBALS['hash'] = sha1($_POST['setpassword'].$GLOBALS['login'].$GLOBALS['salt']);
482d67bd 2349 $GLOBALS['title'] = (empty($_POST['title']) ? 'Shared links on '.escape(index_url($_SERVER)) : $_POST['title'] );
329e0768 2350 $GLOBALS['config']['ENABLE_UPDATECHECK'] = !empty($_POST['updateCheck']);
dd484b90
A		 2351 try {
2352 writeConfig($GLOBALS, isLoggedIn());
2353 }
2354 catch(Exception $e) {
2355 error_log(
2356 'ERROR while writing config file after installation.' . PHP_EOL .
2357 $e->getMessage()
2358 );
2359
2360 // TODO: do not handle exceptions/errors in JS.
2361 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?\';</script>';
2362 exit;
2363 }
fe16b01e 2364 echo '<script>alert("Shaarli is now configured. Please enter your login/password and start shaaring your links!");document.location=\'?do=login\';</script>';
45034273
SS		 2365 exit;
2366 }
2367
2368 // Display config form:
d1e2f8e5
V		 2369 list($timezone_form, $timezone_js) = generateTimeZoneForm();
2370 $timezone_html = '';
2371 if ($timezone_form != '') {
2372 $timezone_html = '<tr><td><b>Timezone:</b></td><td>'.$timezone_form.'</td></tr>';
2373 }
bb8f712d 2374
45034273
SS		 2375 $PAGE = new pageBuilder;
2376 $PAGE->assign('timezone_html',$timezone_html);
2377 $PAGE->assign('timezone_js',$timezone_js);
2378 $PAGE->renderPage('install');
2379 exit;
2380}
2381
ad6c27b7 2382/* Because some f*cking services like flickr require an extra HTTP request to get the thumbnail URL,
45034273 2383 I have deported the thumbnail URL code generation here, otherwise this would slow down page generation.
ad6c27b7 2384 The following function takes the URL a link (e.g. a flickr page) and return the proper thumbnail.
2385 This function is called by passing the URL:
45034273 2386 http://mywebsite.com/shaarli/?do=genthumbnail&hmac=[HMAC]&url=[URL]
ad6c27b7 2387 [URL] is the URL of the link (e.g. a flickr page)
45034273
SS		 2388 [HMAC] is the signature for the [URL] (so that these URL cannot be forged).
2389 The function below will fetch the image from the webservice and store it in the cache.
2390*/
2391function genThumbnail()
2392{
2393 // Make sure the parameters in the URL were generated by us.
2394 $sign = hash_hmac('sha256', $_GET['url'], $GLOBALS['salt']);
ad6c27b7 2395 if ($sign!=$_GET['hmac']) die('Naughty boy!');
45034273
SS		 2396
2397 // Let's see if we don't already have the image for this URL in the cache.
2398 $thumbname=hash('sha1',$_GET['url']).'.jpg';
2399 if (is_file($GLOBALS['config']['CACHEDIR'].'/'.$thumbname))
2400 { // We have the thumbnail, just serve it:
2401 header('Content-Type: image/jpeg');
2402 echo file_get_contents($GLOBALS['config']['CACHEDIR'].'/'.$thumbname);
2403 return;
2404 }
2405 // We may also serve a blank image (if service did not respond)
2406 $blankname=hash('sha1',$_GET['url']).'.gif';
2407 if (is_file($GLOBALS['config']['CACHEDIR'].'/'.$blankname))
2408 {
2409 header('Content-Type: image/gif');
2410 echo file_get_contents($GLOBALS['config']['CACHEDIR'].'/'.$blankname);
2411 return;
2412 }
2413
2414 // Otherwise, generate the thumbnail.
2415 $url = $_GET['url'];
2416 $domain = parse_url($url,PHP_URL_HOST);
2417
2418 if ($domain=='flickr.com' || endsWith($domain,'.flickr.com'))
2419 {
ad6c27b7 2420 // Crude replacement to handle new flickr domain policy (They prefer www. now)
45034273
SS		 2421 $url = str_replace('http://flickr.com/','http://www.flickr.com/',$url);
2422
2423 // Is this a link to an image, or to a flickr page ?
2424 $imageurl='';
2425 if (endswith(parse_url($url,PHP_URL_PATH),'.jpg'))
ad6c27b7 2426 { // This is a direct link to an image. e.g. http://farm1.staticflickr.com/5/5921913_ac83ed27bd_o.jpg
45034273
SS		 2427 preg_match('!(http://farm\d+\.staticflickr\.com/\d+/\d+_\w+_)\w.jpg!',$url,$matches);
2428 if (!empty($matches[1])) $imageurl=$matches[1].'m.jpg';
2429 }
ad6c27b7 2430 else // This is a flickr page (html)
45034273 2431 {
451314eb 2432 // Get the flickr html page.
1557cefb 2433 list($headers, $content) = get_http_response($url, 20);
451314eb 2434 if (strpos($headers[0], '200 OK') !== false)
45034273 2435 {
ad6c27b7 2436 // flickr now nicely provides the URL of the thumbnail in each flickr page.
1557cefb 2437 preg_match('!<link rel=\"image_src\" href=\"(.+?)\"!', $content, $matches);
45034273
SS		 2438 if (!empty($matches[1])) $imageurl=$matches[1];
2439
2440 // In albums (and some other pages), the link rel="image_src" is not provided,
2441 // but flickr provides:
2442 // <meta property="og:image" content="http://farm4.staticflickr.com/3398/3239339068_25d13535ff_z.jpg" />
2443 if ($imageurl=='')
2444 {
1557cefb 2445 preg_match('!<meta property=\"og:image\" content=\"(.+?)\"!', $content, $matches);
45034273
SS		 2446 if (!empty($matches[1])) $imageurl=$matches[1];
2447 }
2448 }
2449 }
2450
2451 if ($imageurl!='')
2452 { // Let's download the image.
451314eb 2453 // Image is 240x120, so 10 seconds to download should be enough.
1557cefb 2454 list($headers, $content) = get_http_response($imageurl, 10);
451314eb 2455 if (strpos($headers[0], '200 OK') !== false) {
1557cefb
A		 2456 // Save image to cache.
2457 file_put_contents($GLOBALS['config']['CACHEDIR'].'/' . $thumbname, $content);
45034273 2458 header('Content-Type: image/jpeg');
1557cefb 2459 echo $content;
45034273
SS		 2460 return;
2461 }
2462 }
2463 }
2464
2465 elseif ($domain=='vimeo.com' )
2466 {
2467 // This is more complex: we have to perform a HTTP request, then parse the result.
ad6c27b7 2468 // Maybe we should deport this to JavaScript ? Example: http://stackoverflow.com/questions/1361149/get-img-thumbnails-from-vimeo/4285098#4285098
45034273 2469 $vid = substr(parse_url($url,PHP_URL_PATH),1);
1557cefb 2470 list($headers, $content) = get_http_response('https://vimeo.com/api/v2/video/'.escape($vid).'.php', 5);
451314eb 2471 if (strpos($headers[0], '200 OK') !== false) {
1557cefb 2472 $t = unserialize($content);
45034273
SS		 2473 $imageurl = $t[0]['thumbnail_medium'];
2474 // Then we download the image and serve it to our client.
1557cefb 2475 list($headers, $content) = get_http_response($imageurl, 10);
451314eb 2476 if (strpos($headers[0], '200 OK') !== false) {
1557cefb
A		 2477 // Save image to cache.
2478 file_put_contents($GLOBALS['config']['CACHEDIR'] . '/' . $thumbname, $content);
45034273 2479 header('Content-Type: image/jpeg');
1557cefb 2480 echo $content;
45034273
SS		 2481 return;
2482 }
2483 }
2484 }
2485
2486 elseif ($domain=='ted.com' || endsWith($domain,'.ted.com'))
2487 {
2488 // The thumbnail for TED talks is located in the <link rel="image_src" [...]> tag on that page
2489 // http://www.ted.com/talks/mikko_hypponen_fighting_viruses_defending_the_net.html
2490 // <link rel="image_src" href="http://images.ted.com/images/ted/28bced335898ba54d4441809c5b1112ffaf36781_389x292.jpg" />
1557cefb 2491 list($headers, $content) = get_http_response($url, 5);
451314eb 2492 if (strpos($headers[0], '200 OK') !== false) {
45034273 2493 // Extract the link to the thumbnail
1557cefb 2494 preg_match('!link rel="image_src" href="(http://images.ted.com/images/ted/.+_\d+x\d+\.jpg)"!', $content, $matches);
45034273
SS		 2495 if (!empty($matches[1]))
2496 { // Let's download the image.
2497 $imageurl=$matches[1];
451314eb 2498 // No control on image size, so wait long enough
1557cefb 2499 list($headers, $content) = get_http_response($imageurl, 20);
451314eb 2500 if (strpos($headers[0], '200 OK') !== false) {
45034273 2501 $filepath=$GLOBALS['config']['CACHEDIR'].'/'.$thumbname;
1557cefb 2502 file_put_contents($filepath, $content); // Save image to cache.
45034273
SS		 2503 if (resizeImage($filepath))
2504 {
2505 header('Content-Type: image/jpeg');
2506 echo file_get_contents($filepath);
2507 return;
2508 }
2509 }
2510 }
2511 }
2512 }
bb8f712d 2513
45034273
SS		 2514 elseif ($domain=='xkcd.com' || endsWith($domain,'.xkcd.com'))
2515 {
2516 // There is no thumbnail available for xkcd comics, so download the whole image and resize it.
2517 // http://xkcd.com/327/
2518 // <img src="http://imgs.xkcd.com/comics/exploits_of_a_mom.png" title="<BLABLA>" alt="<BLABLA>" />
1557cefb 2519 list($headers, $content) = get_http_response($url, 5);
451314eb 2520 if (strpos($headers[0], '200 OK') !== false) {
45034273 2521 // Extract the link to the thumbnail
1557cefb 2522 preg_match('!<img src="(http://imgs.xkcd.com/comics/.*)" title="[^s]!', $content, $matches);
45034273
SS		 2523 if (!empty($matches[1]))
2524 { // Let's download the image.
2525 $imageurl=$matches[1];
451314eb 2526 // No control on image size, so wait long enough
1557cefb 2527 list($headers, $content) = get_http_response($imageurl, 20);
451314eb 2528 if (strpos($headers[0], '200 OK') !== false) {
45034273 2529 $filepath=$GLOBALS['config']['CACHEDIR'].'/'.$thumbname;
1557cefb
A		 2530 // Save image to cache.
2531 file_put_contents($filepath, $content);
45034273
SS		 2532 if (resizeImage($filepath))
2533 {
2534 header('Content-Type: image/jpeg');
2535 echo file_get_contents($filepath);
2536 return;
2537 }
2538 }
2539 }
2540 }
bb8f712d 2541 }
45034273
SS		 2542
2543 else
2544 {
2545 // For all other domains, we try to download the image and make a thumbnail.
451314eb 2546 // We allow 30 seconds max to download (and downloads are limited to 4 Mb)
1557cefb 2547 list($headers, $content) = get_http_response($url, 30);
451314eb 2548 if (strpos($headers[0], '200 OK') !== false) {
45034273 2549 $filepath=$GLOBALS['config']['CACHEDIR'].'/'.$thumbname;
1557cefb
A		 2550 // Save image to cache.
2551 file_put_contents($filepath, $content);
45034273
SS		 2552 if (resizeImage($filepath))
2553 {
2554 header('Content-Type: image/jpeg');
2555 echo file_get_contents($filepath);
2556 return;
2557 }
2558 }
2559 }
2560
2561
2562 // Otherwise, return an empty image (8x8 transparent gif)
2563 $blankgif = base64_decode('R0lGODlhCAAIAIAAAP///////yH5BAEKAAEALAAAAAAIAAgAAAIHjI+py+1dAAA7');
2564 file_put_contents($GLOBALS['config']['CACHEDIR'].'/'.$blankname,$blankgif); // Also put something in cache so that this URL is not requested twice.
2565 header('Content-Type: image/gif');
2566 echo $blankgif;
2567}
2568
2569// Make a thumbnail of the image (to width: 120 pixels)
2570// Returns true if success, false otherwise.
2571function resizeImage($filepath)
2572{
2573 if (!function_exists('imagecreatefromjpeg')) return false; // GD not present: no thumbnail possible.
2574
2575 // Trick: some stupid people rename GIF as JPEG... or else.
2576 // So we really try to open each image type whatever the extension is.
2577 $header=file_get_contents($filepath,false,NULL,0,256); // Read first 256 bytes and try to sniff file type.
2578 $im=false;
2579 $i=strpos($header,'GIF8'); if (($i!==false) && ($i==0)) $im = imagecreatefromgif($filepath); // Well this is crude, but it should be enough.
2580 $i=strpos($header,'PNG'); if (($i!==false) && ($i==1)) $im = imagecreatefrompng($filepath);
2581 $i=strpos($header,'JFIF'); if ($i!==false) $im = imagecreatefromjpeg($filepath);
2582 if (!$im) return false; // Unable to open image (corrupted or not an image)
2583 $w = imagesx($im);
2584 $h = imagesy($im);
2585 $ystart = 0; $yheight=$h;
2586 if ($h>$w) { $ystart= ($h/2)-($w/2); $yheight=$w/2; }
2587 $nw = 120; // Desired width
2588 $nh = min(floor(($h*$nw)/$w),120); // Compute new width/height, but maximum 120 pixels height.
2589 // Resize image:
2590 $im2 = imagecreatetruecolor($nw,$nh);
2591 imagecopyresampled($im2, $im, 0, 0, 0, $ystart, $nw, $nh, $w, $yheight);
2592 imageinterlace($im2,true); // For progressive JPEG.
2593 $tempname=$filepath.'_TEMP.jpg';
2594 imagejpeg($im2, $tempname, 90);
2595 imagedestroy($im);
2596 imagedestroy($im2);
9e820906 2597 unlink($filepath);
45034273
SS		 2598 rename($tempname,$filepath); // Overwrite original picture with thumbnail.
2599 return true;
2600}
2601
45034273
SS		 2602if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=genthumbnail')) { genThumbnail(); exit; } // Thumbnail generation/cache does not need the link database.
2603if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=rss')) { showRSS(); exit; }
2604if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=atom')) { showATOM(); exit; }
2605if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=dailyrss')) { showDailyRSS(); exit; }
45034273
SS		 2606if (!isset($_SESSION['LINKS_PER_PAGE'])) $_SESSION['LINKS_PER_PAGE']=$GLOBALS['config']['LINKS_PER_PAGE'];
2607renderPage();
03545ef6 2608?>
The personal, minimalist, super-fast, database free, bookmarking service - community repo