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Merge pull request #455 from ArthurHoaro/improved-search-454
[github/shaarli/Shaarli.git] / index.php
CommitLineData
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 $maxsize;
552}
553
45034273
SS		 554/* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a timestamp (Unix epoch)
555 (used to build the ADD_DATE attribute in Netscape-bookmarks file)
556 PS: I could have used strptime(), but it does not exist on Windows. I'm too kind. */
557function linkdate2timestamp($linkdate)
558{
f5b05925
JD		 559 if(strcmp($linkdate, '_000000') !== 0 || !$linkdate){
560 $Y=$M=$D=$h=$m=$s=0;
561 $r = sscanf($linkdate,'%4d%2d%2d_%2d%2d%2d',$Y,$M,$D,$h,$m,$s);
562 return mktime($h,$m,$s,$M,$D,$Y);
563 }
564 return time();
45034273
SS		 565}
566
567/* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a RFC822 date.
568 (used to build the pubDate attribute in RSS feed.) */
569function linkdate2rfc822($linkdate)
570{
571 return date('r',linkdate2timestamp($linkdate)); // 'r' is for RFC822 date format.
572}
573
574/* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a ISO 8601 date.
575 (used to build the updated tags in ATOM feed.) */
576function linkdate2iso8601($linkdate)
577{
578 return date('c',linkdate2timestamp($linkdate)); // 'c' is for ISO 8601 date format.
579}
580
45034273
SS		 581// ------------------------------------------------------------------------------------------
582// Token management for XSRF protection
583// Token should be used in any form which acts on data (create,update,delete,import...).
584if (!isset($_SESSION['tokens'])) $_SESSION['tokens']=array(); // Token are attached to the session.
585
586// Returns a token.
587function getToken()
588{
a1f5a6ec 589 $rnd = sha1(uniqid('',true).'_'.mt_rand().$GLOBALS['salt']); // We generate a random string.
45034273
SS		 590 $_SESSION['tokens'][$rnd]=1; // Store it on the server side.
591 return $rnd;
592}
593
ad6c27b7 594// Tells if a token is OK. Using this function will destroy the token.
595// true=token is OK.
45034273
SS		 596function tokenOk($token)
597{
598 if (isset($_SESSION['tokens'][$token]))
599 {
600 unset($_SESSION['tokens'][$token]); // Token is used: destroy it.
ad6c27b7 601 return true; // Token is OK.
45034273
SS		 602 }
603 return false; // Wrong token, or already used.
604}
605
606// ------------------------------------------------------------------------------------------
607/* This class is in charge of building the final page.
608 (This is basically a wrapper around RainTPL which pre-fills some fields.)
609 p = new pageBuilder;
610 p.assign('myfield','myvalue');
611 p.renderPage('mytemplate');
bb8f712d 612
45034273
SS		 613*/
614class pageBuilder
615{
616 private $tpl; // RainTPL template
617
618 function __construct()
619 {
056107ab 620 $this->tpl = false;
bb8f712d 621 }
45034273 622
056107ab
A		 623 /**
624 * Initialize all default tpl tags.
625 */
45034273 626 private function initialize()
bb8f712d
KT		 627 {
628 $this->tpl = new RainTPL;
4407b45f
V		 629
630 try {
631 $version = ApplicationUtils::checkUpdate(
632 shaarli_version,
633 $GLOBALS['config']['UPDATECHECK_FILENAME'],
634 $GLOBALS['config']['UPDATECHECK_INTERVAL'],
635 $GLOBALS['config']['ENABLE_UPDATECHECK'],
636 isLoggedIn(),
637 $GLOBALS['config']['UPDATECHECK_BRANCH']
638 );
639 $this->tpl->assign('newVersion', escape($version));
4a7af975 640 $this->tpl->assign('versionError', '');
4407b45f
V		 641
642 } catch (Exception $exc) {
1abe6555 643 logm($GLOBALS['config']['LOG_FILE'], $_SERVER['REMOTE_ADDR'], $exc->getMessage());
4a7af975 644 $this->tpl->assign('newVersion', '');
4407b45f
V		 645 $this->tpl->assign('versionError', escape($exc->getMessage()));
646 }
647
056107ab
A		 648 $this->tpl->assign('feedurl', escape(index_url($_SERVER)));
649 $searchcrits = ''; // Search criteria
650 if (!empty($_GET['searchtags'])) {
651 $searchcrits .= '&searchtags=' . urlencode($_GET['searchtags']);
652 }
653 elseif (!empty($_GET['searchterm'])) {
654 $searchcrits .= '&searchterm=' . urlencode($_GET['searchterm']);
655 }
656 $this->tpl->assign('searchcrits', $searchcrits);
657 $this->tpl->assign('source', index_url($_SERVER));
658 $this->tpl->assign('version', shaarli_version);
659 $this->tpl->assign('scripturl', index_url($_SERVER));
660 $this->tpl->assign('pagetitle', 'Shaarli');
661 $this->tpl->assign('privateonly', !empty($_SESSION['privateonly'])); // Show only private links?
662 if (!empty($GLOBALS['title'])) {
663 $this->tpl->assign('pagetitle', $GLOBALS['title']);
664 }
665 if (!empty($GLOBALS['titleLink'])) {
666 $this->tpl->assign('titleLink', $GLOBALS['titleLink']);
667 }
668 if (!empty($GLOBALS['pagetitle'])) {
669 $this->tpl->assign('pagetitle', $GLOBALS['pagetitle']);
670 }
671 $this->tpl->assign('shaarlititle', empty($GLOBALS['title']) ? 'Shaarli': $GLOBALS['title']);
e4b9a763
A		 672 if (!empty($GLOBALS['plugin_errors'])) {
673 $this->tpl->assign('plugin_errors', $GLOBALS['plugin_errors']);
056107ab 674 }
45034273 675 }
bb8f712d 676
45034273
SS		 677 // The following assign() method is basically the same as RainTPL (except that it's lazy)
678 public function assign($what,$where)
679 {
680 if ($this->tpl===false) $this->initialize(); // Lazy initialization
681 $this->tpl->assign($what,$where);
682 }
bb8f712d 683
45034273 684 // Render a specific page (using a template).
ad6c27b7 685 // e.g. pb.renderPage('picwall')
45034273
SS		 686 public function renderPage($page)
687 {
688 if ($this->tpl===false) $this->initialize(); // Lazy initialization
689 $this->tpl->draw($page);
690 }
f4c84ad7
D		 691
692 /**
693 * Render a 404 page (uses the template : tpl/404.tpl)
694 *
695 * usage : $PAGE->render404('The link was deleted')
696 * @param string $message A messate to display what is not found
697 */
698 public function render404($message='The page you are trying to reach does not exist or has been deleted.') {
699 header($_SERVER['SERVER_PROTOCOL'] . ' 404 Not Found');
700 $this->tpl->assign('error_message', $message);
701 $this->renderPage('404');
702 }
45034273
SS		 703}
704
45034273 705// ------------------------------------------------------------------------------------------
ad6c27b7 706// Output the last N links in RSS 2.0 format.
45034273
SS		 707function showRSS()
708{
709 header('Content-Type: application/rss+xml; charset=utf-8');
710
2abd3905 711 // $usepermalink : If true, use permalink instead of final link.
ad6c27b7 712 // User just has to add 'permalink' in URL parameters. e.g. http://mysite.com/shaarli/?do=rss&permalinks
ed5b38dd
FE		 713 // Also enabled through a config option
714 $usepermalinks = isset($_GET['permalinks']) || !$GLOBALS['config']['ENABLE_RSS_PERMALINKS'];
2abd3905 715
45034273
SS		 716 // Cache system
717 $query = $_SERVER["QUERY_STRING"];
01e48f26
V		 718 $cache = new CachedPage(
719 $GLOBALS['config']['PAGECACHE'],
482d67bd 720 page_url($_SERVER),
01e48f26
V		 721 startsWith($query,'do=rss') && !isLoggedIn()
722 );
723 $cached = $cache->cachedVersion();
724 if (! empty($cached)) {
725 echo $cached;
726 exit;
727 }
45034273
SS		 728
729 // If cached was not found (or not usable), then read the database and build the response:
9f15ca9e 730 $LINKSDB = new LinkDB(
9c8752a2 731 $GLOBALS['config']['DATASTORE'],
02ad8fb6 732 isLoggedIn(),
90e5bd65
A		 733 $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
734 $GLOBALS['redirector']
9f15ca9e
V		 735 );
736 // Read links from database (and filter private links if user it not logged in).
45034273 737
ad6c27b7 738 // Optionally filter the results:
822bffce
A		 739 if (!empty($_GET['searchterm'])) {
740 $linksToDisplay = $LINKSDB->filter(LinkFilter::$FILTER_TEXT, $_GET['searchterm']);
741 }
742 elseif (!empty($_GET['searchtags'])) {
743 $linksToDisplay = $LINKSDB->filter(LinkFilter::$FILTER_TAG, trim($_GET['searchtags']));
744 }
745 else {
746 $linksToDisplay = $LINKSDB;
747 }
f3db3774 748
c677013b 749 $nblinksToDisplay = 50; // Number of links to display.
822bffce
A		 750 // In URL, you can specificy the number of links. Example: nb=200 or nb=all for all links.
751 if (!empty($_GET['nb'])) {
752 $nblinksToDisplay = $_GET['nb'] == 'all' ? count($linksToDisplay) : max(intval($_GET['nb']), 1);
c677013b 753 }
45034273 754
822bffce 755 $pageaddr = escape(index_url($_SERVER));
45034273 756 echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">';
5f85fcd8 757 echo '<channel><title>'.$GLOBALS['title'].'</title><link>'.$pageaddr.'</link>';
45034273
SS		 758 echo '<description>Shared links</description><language>en-en</language><copyright>'.$pageaddr.'</copyright>'."\n\n";
759 if (!empty($GLOBALS['config']['PUBSUBHUB_URL']))
760 {
761 echo '<!-- PubSubHubbub Discovery -->';
5f85fcd8
A		 762 echo '<link rel="hub" href="'.escape($GLOBALS['config']['PUBSUBHUB_URL']).'" xmlns="http://www.w3.org/2005/Atom" />';
763 echo '<link rel="self" href="'.$pageaddr.'?do=rss" xmlns="http://www.w3.org/2005/Atom" />';
45034273
SS		 764 echo '<!-- End Of PubSubHubbub Discovery -->';
765 }
766 $i=0;
767 $keys=array(); foreach($linksToDisplay as $key=>$value) { $keys[]=$key; } // No, I can't use array_keys().
fbd9e527 768 while ($i<$nblinksToDisplay && $i<count($keys))
45034273
SS		 769 {
770 $link = $linksToDisplay[$keys[$i]];
771 $guid = $pageaddr.'?'.smallHash($link['linkdate']);
772 $rfc822date = linkdate2rfc822($link['linkdate']);
5f85fcd8 773 $absurl = $link['url'];
45034273 774 if (startsWith($absurl,'?')) $absurl=$pageaddr.$absurl; // make permalink URL absolute
2abd3905 775 if ($usepermalinks===true)
5f85fcd8 776 echo '<item><title>'.$link['title'].'</title><guid isPermaLink="true">'.$guid.'</guid><link>'.$guid.'</link>';
2abd3905 777 else
5f85fcd8
A		 778 echo '<item><title>'.$link['title'].'</title><guid isPermaLink="false">'.$guid.'</guid><link>'.$absurl.'</link>';
779 if (!$GLOBALS['config']['HIDE_TIMESTAMPS'] || isLoggedIn()) echo '<pubDate>'.escape($rfc822date)."</pubDate>\n";
45034273
SS		 780 if ($link['tags']!='') // Adding tags to each RSS entry (as mentioned in RSS specification)
781 {
5f85fcd8 782 foreach(explode(' ',$link['tags']) as $tag) { echo '<category domain="'.$pageaddr.'">'.$tag.'</category>'."\n"; }
45034273 783 }
2abd3905
SS		 784
785 // Add permalink in description
786 $descriptionlink = '(<a href="'.$guid.'">Permalink</a>)';
787 // If user wants permalinks first, put the final link in description
788 if ($usepermalinks===true) $descriptionlink = '(<a href="'.$absurl.'">Link</a>)';
789 if (strlen($link['description'])>0) $descriptionlink = '<br>'.$descriptionlink;
90e5bd65
A		 790 echo '<description><![CDATA['.
791 format_description($link['description'], $GLOBALS['redirector']) .
792 $descriptionlink . ']]></description>' . "\n</item>\n";
45034273
SS		 793 $i++;
794 }
482d67bd 795 echo '</channel></rss><!-- Cached version of '.escape(page_url($_SERVER)).' -->';
45034273
SS		 796
797 $cache->cache(ob_get_contents());
798 ob_end_flush();
799 exit;
800}
801
802// ------------------------------------------------------------------------------------------
ad6c27b7 803// Output the last N links in ATOM format.
45034273
SS		 804function showATOM()
805{
806 header('Content-Type: application/atom+xml; charset=utf-8');
807
2abd3905 808 // $usepermalink : If true, use permalink instead of final link.
ad6c27b7 809 // User just has to add 'permalink' in URL parameters. e.g. http://mysite.com/shaarli/?do=atom&permalinks
ed5b38dd 810 $usepermalinks = isset($_GET['permalinks']) || !$GLOBALS['config']['ENABLE_RSS_PERMALINKS'];
2abd3905 811
45034273
SS		 812 // Cache system
813 $query = $_SERVER["QUERY_STRING"];
01e48f26
V		 814 $cache = new CachedPage(
815 $GLOBALS['config']['PAGECACHE'],
482d67bd 816 page_url($_SERVER),
01e48f26
V		 817 startsWith($query,'do=atom') && !isLoggedIn()
818 );
819 $cached = $cache->cachedVersion();
820 if (!empty($cached)) {
821 echo $cached;
822 exit;
823 }
45034273 824
01e48f26
V		 825 // If cached was not found (or not usable), then read the database and build the response:
826 // Read links from database (and filter private links if used it not logged in).
9f15ca9e 827 $LINKSDB = new LinkDB(
9c8752a2 828 $GLOBALS['config']['DATASTORE'],
02ad8fb6 829 isLoggedIn(),
90e5bd65
A		 830 $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
831 $GLOBALS['redirector']
9f15ca9e 832 );
45034273 833
ad6c27b7 834 // Optionally filter the results:
822bffce
A		 835 if (!empty($_GET['searchterm'])) {
836 $linksToDisplay = $LINKSDB->filter(LinkFilter::$FILTER_TEXT, $_GET['searchterm']);
837 }
838 else if (!empty($_GET['searchtags'])) {
839 $linksToDisplay = $LINKSDB->filter(LinkFilter::$FILTER_TAG, trim($_GET['searchtags']));
840 }
841 else {
842 $linksToDisplay = $LINKSDB;
843 }
f3db3774 844
c677013b 845 $nblinksToDisplay = 50; // Number of links to display.
822bffce
A		 846 // In URL, you can specificy the number of links. Example: nb=200 or nb=all for all links.
847 if (!empty($_GET['nb'])) {
848 $nblinksToDisplay = $_GET['nb']=='all' ? count($linksToDisplay) : max(intval($_GET['nb']), 1);
c677013b 849 }
45034273 850
482d67bd 851 $pageaddr=escape(index_url($_SERVER));
45034273
SS		 852 $latestDate = '';
853 $entries='';
854 $i=0;
855 $keys=array(); foreach($linksToDisplay as $key=>$value) { $keys[]=$key; } // No, I can't use array_keys().
fbd9e527 856 while ($i<$nblinksToDisplay && $i<count($keys))
45034273
SS		 857 {
858 $link = $linksToDisplay[$keys[$i]];
859 $guid = $pageaddr.'?'.smallHash($link['linkdate']);
860 $iso8601date = linkdate2iso8601($link['linkdate']);
861 $latestDate = max($latestDate,$iso8601date);
5f85fcd8 862 $absurl = $link['url'];
45034273 863 if (startsWith($absurl,'?')) $absurl=$pageaddr.$absurl; // make permalink URL absolute
5f85fcd8 864 $entries.='<entry><title>'.$link['title'].'</title>';
2abd3905
SS		 865 if ($usepermalinks===true)
866 $entries.='<link href="'.$guid.'" /><id>'.$guid.'</id>';
867 else
868 $entries.='<link href="'.$absurl.'" /><id>'.$guid.'</id>';
5f85fcd8 869 if (!$GLOBALS['config']['HIDE_TIMESTAMPS'] || isLoggedIn()) $entries.='<updated>'.escape($iso8601date).'</updated>';
2abd3905
SS		 870
871 // Add permalink in description
5f85fcd8 872 $descriptionlink = '(<a href="'.$guid.'">Permalink</a>)';
2abd3905 873 // If user wants permalinks first, put the final link in description
5f85fcd8
A		 874 if ($usepermalinks===true) $descriptionlink = '(<a href="'.$absurl.'">Link</a>)';
875 if (strlen($link['description'])>0) $descriptionlink = '<br>'.$descriptionlink;
2abd3905 876
90e5bd65
A		 877 $entries .= '<content type="html"><![CDATA['.
878 format_description($link['description'], $GLOBALS['redirector']) .
879 $descriptionlink . "]]></content>\n";
45034273
SS		 880 if ($link['tags']!='') // Adding tags to each ATOM entry (as mentioned in ATOM specification)
881 {
882 foreach(explode(' ',$link['tags']) as $tag)
5f85fcd8 883 { $entries.='<category scheme="'.$pageaddr.'" term="'.$tag.'" />'."\n"; }
45034273
SS		 884 }
885 $entries.="</entry>\n";
886 $i++;
887 }
888 $feed='<?xml version="1.0" encoding="UTF-8"?><feed xmlns="http://www.w3.org/2005/Atom">';
5f85fcd8
A		 889 $feed.='<title>'.$GLOBALS['title'].'</title>';
890 if (!$GLOBALS['config']['HIDE_TIMESTAMPS'] || isLoggedIn()) $feed.='<updated>'.escape($latestDate).'</updated>';
482d67bd 891 $feed.='<link rel="self" href="'.escape(server_url($_SERVER).$_SERVER["REQUEST_URI"]).'" />';
45034273
SS		 892 if (!empty($GLOBALS['config']['PUBSUBHUB_URL']))
893 {
894 $feed.='<!-- PubSubHubbub Discovery -->';
5f85fcd8 895 $feed.='<link rel="hub" href="'.escape($GLOBALS['config']['PUBSUBHUB_URL']).'" />';
45034273
SS		 896 $feed.='<!-- End Of PubSubHubbub Discovery -->';
897 }
5f85fcd8
A		 898 $feed.='<author><name>'.$pageaddr.'</name><uri>'.$pageaddr.'</uri></author>';
899 $feed.='<id>'.$pageaddr.'</id>'."\n\n"; // Yes, I know I should use a real IRI (RFC3987), but the site URL will do.
45034273 900 $feed.=$entries;
482d67bd 901 $feed.='</feed><!-- Cached version of '.escape(page_url($_SERVER)).' -->';
45034273 902 echo $feed;
bb8f712d 903
45034273
SS		 904 $cache->cache(ob_get_contents());
905 ob_end_flush();
906 exit;
907}
908
909// ------------------------------------------------------------------------------------------
910// Daily RSS feed: 1 RSS entry per day giving all the links on that day.
911// Gives the last 7 days (which have links).
912// This RSS feed cannot be filtered.
f3b8f9f0 913function showDailyRSS() {
45034273
SS		 914 // Cache system
915 $query = $_SERVER["QUERY_STRING"];
01e48f26
V		 916 $cache = new CachedPage(
917 $GLOBALS['config']['PAGECACHE'],
482d67bd 918 page_url($_SERVER),
01e48f26
V		 919 startsWith($query,'do=dailyrss') && !isLoggedIn()
920 );
f3b8f9f0
A		 921 $cached = $cache->cachedVersion();
922 if (!empty($cached)) {
923 echo $cached;
924 exit;
925 }
9f15ca9e 926
f3b8f9f0
A		 927 // If cached was not found (or not usable), then read the database and build the response:
928 // Read links from database (and filter private links if used it not logged in).
9f15ca9e 929 $LINKSDB = new LinkDB(
9c8752a2 930 $GLOBALS['config']['DATASTORE'],
02ad8fb6 931 isLoggedIn(),
90e5bd65
A		 932 $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
933 $GLOBALS['redirector']
9f15ca9e 934 );
bb8f712d 935
45034273
SS		 936 /* Some Shaarlies may have very few links, so we need to look
937 back in time (rsort()) until we have enough days ($nb_of_days).
938 */
f3b8f9f0
A		 939 $linkdates = array();
940 foreach ($LINKSDB as $linkdate => $value) {
941 $linkdates[] = $linkdate;
942 }
45034273 943 rsort($linkdates);
f3b8f9f0
A		 944 $nb_of_days = 7; // We take 7 days.
945 $today = Date('Ymd');
946 $days = array();
947
948 foreach ($linkdates as $linkdate) {
949 $day = substr($linkdate, 0, 8); // Extract day (without time)
950 if (strcmp($day,$today) < 0) {
951 if (empty($days[$day])) {
952 $days[$day] = array();
953 }
954 $days[$day][] = $linkdate;
955 }
956
957 if (count($days) > $nb_of_days) {
958 break; // Have we collected enough days?
45034273 959 }
45034273 960 }
bb8f712d 961
45034273
SS		 962 // Build the RSS feed.
963 header('Content-Type: application/rss+xml; charset=utf-8');
482d67bd 964 $pageaddr = escape(index_url($_SERVER));
45034273 965 echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0">';
f3b8f9f0
A		 966 echo '<channel>';
967 echo '<title>Daily - '. $GLOBALS['title'] . '</title>';
968 echo '<link>'. $pageaddr .'</link>';
969 echo '<description>Daily shared links</description>';
970 echo '<language>en-en</language>';
971 echo '<copyright>'. $pageaddr .'</copyright>'. PHP_EOL;
972
973 // For each day.
974 foreach ($days as $day => $linkdates) {
975 $daydate = linkdate2timestamp($day.'_000000'); // Full text date
45034273 976 $rfc822date = linkdate2rfc822($day.'_000000');
482d67bd 977 $absurl = escape(index_url($_SERVER).'?do=daily&day='.$day); // Absolute URL of the corresponding "Daily" page.
bb8f712d 978
45034273 979 // Build the HTML body of this RSS entry.
f3b8f9f0
A		 980 $html = '';
981 $href = '';
982 $links = array();
983
45034273 984 // We pre-format some fields for proper output.
f3b8f9f0 985 foreach ($linkdates as $linkdate) {
45034273 986 $l = $LINKSDB[$linkdate];
90e5bd65 987 $l['formatedDescription'] = format_description($l['description'], $GLOBALS['redirector']);
bb8f712d 988 $l['thumbnail'] = thumbnail($l['url']);
a5752e77 989 $l['timestamp'] = linkdate2timestamp($l['linkdate']);
f3b8f9f0 990 if (startsWith($l['url'], '?')) {
482d67bd 991 $l['url'] = index_url($_SERVER) . $l['url']; // make permalink URL absolute
f3b8f9f0
A		 992 }
993 $links[$linkdate] = $l;
45034273 994 }
f3b8f9f0 995
45034273 996 // Then build the HTML for this day:
bb8f712d 997 $tpl = new RainTPL;
f3b8f9f0
A		 998 $tpl->assign('title', $GLOBALS['title']);
999 $tpl->assign('daydate', $daydate);
1000 $tpl->assign('absurl', $absurl);
1001 $tpl->assign('links', $links);
1002 $tpl->assign('rfc822date', escape($rfc822date));
1003 $html = $tpl->draw('dailyrss', $return_string=true);
45034273 1004
f3b8f9f0 1005 echo $html . PHP_EOL;
bb8f712d 1006 }
482d67bd 1007 echo '</channel></rss><!-- Cached version of '. escape(page_url($_SERVER)) .' -->';
bb8f712d 1008
45034273
SS		 1009 $cache->cache(ob_get_contents());
1010 ob_end_flush();
1011 exit;
1012}
1013
38603b24
A		 1014/**
1015 * Show the 'Daily' page.
1016 *
1017 * @param PageBuilder $pageBuilder Template engine wrapper.
1018 */
1019function showDaily($pageBuilder)
45034273 1020{
9f15ca9e 1021 $LINKSDB = new LinkDB(
9c8752a2 1022 $GLOBALS['config']['DATASTORE'],
02ad8fb6 1023 isLoggedIn(),
90e5bd65
A		 1024 $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
1025 $GLOBALS['redirector']
9f15ca9e 1026 );
45034273
SS		 1027
1028 $day=Date('Ymd',strtotime('-1 day')); // Yesterday, in format YYYYMMDD.
1029 if (isset($_GET['day'])) $day=$_GET['day'];
bb8f712d 1030
45034273
SS		 1031 $days = $LINKSDB->days();
1032 $i = array_search($day,$days);
f3db3774 1033 if ($i===false) { $i=count($days)-1; $day=$days[$i]; }
bb8f712d
KT		 1034 $previousday='';
1035 $nextday='';
45034273
SS		 1036 if ($i!==false)
1037 {
f3db3774 1038 if ($i>=1) $previousday=$days[$i-1];
45034273
SS		 1039 if ($i<count($days)-1) $nextday=$days[$i+1];
1040 }
1041
9186ab95 1042 try {
822bffce 1043 $linksToDisplay = $LINKSDB->filter(LinkFilter::$FILTER_DAY, $day);
9186ab95
V		 1044 } catch (Exception $exc) {
1045 error_log($exc);
d1e2f8e5 1046 $linksToDisplay = array();
9186ab95
V		 1047 }
1048
45034273
SS		 1049 // We pre-format some fields for proper output.
1050 foreach($linksToDisplay as $key=>$link)
1051 {
5f85fcd8 1052
dd62b9ba
SS		 1053 $taglist = explode(' ',$link['tags']);
1054 uasort($taglist, 'strcasecmp');
1055 $linksToDisplay[$key]['taglist']=$taglist;
90e5bd65 1056 $linksToDisplay[$key]['formatedDescription'] = format_description($link['description'], $GLOBALS['redirector']);
bb8f712d 1057 $linksToDisplay[$key]['thumbnail'] = thumbnail($link['url']);
a5752e77 1058 $linksToDisplay[$key]['timestamp'] = linkdate2timestamp($link['linkdate']);
45034273 1059 }
bb8f712d 1060
45034273 1061 /* We need to spread the articles on 3 columns.
ad6c27b7 1062 I did not want to use a JavaScript lib like http://masonry.desandro.com/
bb8f712d 1063 so I manually spread entries with a simple method: I roughly evaluate the
45034273
SS		 1064 height of a div according to title and description length.
1065 */
1066 $columns=array(array(),array(),array()); // Entries to display, for each column.
1067 $fill=array(0,0,0); // Rough estimate of columns fill.
1068 foreach($linksToDisplay as $key=>$link)
1069 {
1070 // Roughly estimate length of entry (by counting characters)
1071 // Title: 30 chars = 1 line. 1 line is 30 pixels height.
1072 // Description: 836 characters gives roughly 342 pixel height.
ad6c27b7 1073 // This is not perfect, but it's usually OK.
45034273
SS		 1074 $length=strlen($link['title'])+(342*strlen($link['description']))/836;
1075 if ($link['thumbnail']) $length +=100; // 1 thumbnails roughly takes 100 pixels height.
1076 // Then put in column which is the less filled:
1077 $smallest=min($fill); // find smallest value in array.
1078 $index=array_search($smallest,$fill); // find index of this smallest value.
1079 array_push($columns[$index],$link); // Put entry in this column.
1080 $fill[$index]+=$length;
1081 }
38603b24 1082
6fc14d53
A		 1083 $data = array(
1084 'linksToDisplay' => $linksToDisplay,
1085 'linkcount' => count($LINKSDB),
1086 'cols' => $columns,
1087 'day' => linkdate2timestamp($day.'_000000'),
1088 'previousday' => $previousday,
1089 'nextday' => $nextday,
1090 );
1091 $pluginManager = PluginManager::getInstance();
1092 $pluginManager->executeHooks('render_daily', $data, array('loggedin' => isLoggedIn()));
1093
1094 foreach ($data as $key => $value) {
38603b24 1095 $pageBuilder->assign($key, $value);
6fc14d53
A		 1096 }
1097
38603b24 1098 $pageBuilder->renderPage('daily');
45034273
SS		 1099 exit;
1100}
1101
6fc14d53
A		 1102// Renders the linklist
1103function showLinkList($PAGE, $LINKSDB) {
1104 buildLinkList($PAGE,$LINKSDB); // Compute list of links to display
1105 $PAGE->renderPage('linklist');
1106}
1107
45034273
SS		 1108
1109// ------------------------------------------------------------------------------------------
1110// Render HTML page (according to URL parameters and user rights)
1111function renderPage()
1112{
9f15ca9e 1113 $LINKSDB = new LinkDB(
9c8752a2 1114 $GLOBALS['config']['DATASTORE'],
02ad8fb6 1115 isLoggedIn(),
90e5bd65
A		 1116 $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
1117 $GLOBALS['redirector']
9f15ca9e 1118 );
45034273 1119
510377d2
A		 1120 $updater = new Updater(
1121 read_updates_file($GLOBALS['config']['UPDATES_FILE']),
1122 $GLOBALS,
1123 $LINKSDB,
1124 isLoggedIn()
1125 );
1126 try {
1127 $newUpdates = $updater->update();
1128 if (! empty($newUpdates)) {
1129 write_updates_file(
1130 $GLOBALS['config']['UPDATES_FILE'],
1131 $updater->getDoneUpdates()
1132 );
1133 }
1134 }
1135 catch(Exception $e) {
1136 die($e->getMessage());
1137 }
1138
6fc14d53
A		 1139 $PAGE = new pageBuilder;
1140
1141 // Determine which page will be rendered.
1142 $query = (isset($_SERVER['QUERY_STRING'])) ? $_SERVER['QUERY_STRING'] : '';
1143 $targetPage = Router::findPage($query, $_GET, isLoggedIn());
1144
1145 // Call plugin hooks for header, footer and includes, specifying which page will be rendered.
1146 // Then assign generated data to RainTPL.
1147 $common_hooks = array(
fea5db7a 1148 'includes',
6fc14d53
A		 1149 'header',
1150 'footer',
6fc14d53
A		 1151 );
1152 $pluginManager = PluginManager::getInstance();
1153 foreach($common_hooks as $name) {
1154 $plugin_data = array();
1155 $pluginManager->executeHooks('render_' . $name, $plugin_data,
1156 array(
1157 'target' => $targetPage,
1158 'loggedin' => isLoggedIn()
1159 )
1160 );
1161 $PAGE->assign('plugins_' . $name, $plugin_data);
1162 }
1163
45034273 1164 // -------- Display login form.
6fc14d53 1165 if ($targetPage == Router::$PAGE_LOGIN)
45034273
SS		 1166 {
1167 if ($GLOBALS['config']['OPEN_SHAARLI']) { header('Location: ?'); exit; } // No need to login for open Shaarli
1168 $token=''; if (ban_canLogin()) $token=getToken(); // Do not waste token generation if not useful.
45034273 1169 $PAGE->assign('token',$token);
5f85fcd8 1170 $PAGE->assign('returnurl',(isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']):''));
45034273
SS		 1171 $PAGE->renderPage('loginform');
1172 exit;
1173 }
1174 // -------- User wants to logout.
1175 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=logout'))
1176 {
01e48f26 1177 invalidateCaches($GLOBALS['config']['PAGECACHE']);
45034273
SS		 1178 logout();
1179 header('Location: ?');
1180 exit;
1181 }
1182
1183 // -------- Picture wall
6fc14d53 1184 if ($targetPage == Router::$PAGE_PICWALL)
45034273 1185 {
ad6c27b7 1186 // Optionally filter the results:
822bffce
A		 1187 if (!empty($_GET['searchterm'])) {
1188 $links = $LINKSDB->filter(LinkFilter::$FILTER_TEXT, $_GET['searchterm']);
1189 }
1190 elseif (! empty($_GET['searchtags'])) {
1191 $links = $LINKSDB->filter(LinkFilter::$FILTER_TAG, trim($_GET['searchtags']));
1192 }
1193 else {
1194 $links = $LINKSDB;
1195 }
f3db3774 1196
822bffce 1197 $linksToDisplay = array();
45034273
SS		 1198
1199 // Get only links which have a thumbnail.
1200 foreach($links as $link)
1201 {
5f85fcd8 1202 $permalink='?'.escape(smallhash($link['linkdate']));
45034273
SS		 1203 $thumb=lazyThumbnail($link['url'],$permalink);
1204 if ($thumb!='') // Only output links which have a thumbnail.
1205 {
1206 $link['thumbnail']=$thumb; // Thumbnail HTML code.
45034273
SS		 1207 $linksToDisplay[]=$link; // Add to array.
1208 }
1209 }
f3db3774 1210
6fc14d53
A		 1211 $data = array(
1212 'linkcount' => count($LINKSDB),
1213 'linksToDisplay' => $linksToDisplay,
1214 );
1215 $pluginManager->executeHooks('render_picwall', $data, array('loggedin' => isLoggedIn()));
1216
1217 foreach ($data as $key => $value) {
1218 $PAGE->assign($key, $value);
1219 }
1220
45034273
SS		 1221 $PAGE->renderPage('picwall');
1222 exit;
1223 }
1224
1225 // -------- Tag cloud
6fc14d53 1226 if ($targetPage == Router::$PAGE_TAGCLOUD)
45034273
SS		 1227 {
1228 $tags= $LINKSDB->allTags();
a037ac69 1229
45034273
SS		 1230 // We sort tags alphabetically, then choose a font size according to count.
1231 // First, find max value.
f1e96a06
A		 1232 $maxcount = 0;
1233 foreach ($tags as $value) {
1234 $maxcount = max($maxcount, $value);
1235 }
1236
1237 // Sort tags alphabetically: case insensitive, support locale if avalaible.
1238 uksort($tags, function($a, $b) {
1239 // Collator is part of PHP intl.
1240 if (class_exists('Collator')) {
1241 $c = new Collator(setlocale(LC_ALL, 0));
1242 return $c->compare($a, $b);
1243 } else {
1244 return strcasecmp($a, $b);
1245 }
1246 });
1247
45034273
SS		 1248 $tagList=array();
1249 foreach($tags as $key=>$value)
f1e96a06 1250 // 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 1251 {
1e3b2740 1252 $tagList[$key] = array('count'=>$value,'size'=>log($value, 15) / log($maxcount, 30) * (22-6) + 6);
45034273 1253 }
6fc14d53
A		 1254
1255 $data = array(
1256 'linkcount' => count($LINKSDB),
1257 'tags' => $tagList,
1258 );
1259 $pluginManager->executeHooks('render_tagcloud', $data, array('loggedin' => isLoggedIn()));
1260
1261 foreach ($data as $key => $value) {
1262 $PAGE->assign($key, $value);
1263 }
1264
45034273 1265 $PAGE->renderPage('tagcloud');
bb8f712d 1266 exit;
45034273
SS		 1267 }
1268
38603b24
A		 1269 // Daily page.
1270 if ($targetPage == Router::$PAGE_DAILY) {
1271 showDaily($PAGE);
1272 }
1273
8f8113b9
A		 1274 // Display openseach plugin (XML)
1275 if ($targetPage == Router::$PAGE_OPENSEARCH) {
1276 header('Content-Type: application/xml; charset=utf-8');
1277 $PAGE->assign('serverurl', index_url($_SERVER));
1278 $PAGE->renderPage('opensearch');
1279 exit;
1280 }
1281
45034273
SS		 1282 // -------- User clicks on a tag in a link: The tag is added to the list of searched tags (searchtags=...)
1283 if (isset($_GET['addtag']))
1284 {
1285 // Get previous URL (http_referer) and add the tag to the searchtags parameters in query.
1286 if (empty($_SERVER['HTTP_REFERER'])) { header('Location: ?searchtags='.urlencode($_GET['addtag'])); exit; } // In case browser does not send HTTP_REFERER
1287 parse_str(parse_url($_SERVER['HTTP_REFERER'],PHP_URL_QUERY), $params);
732e683b 1288
775803a0
A		 1289 // Prevent redirection loop
1290 if (isset($params['addtag'])) {
1291 unset($params['addtag']);
1292 }
1293
732e683b
FE		 1294 // Check if this tag is already in the search query and ignore it if it is.
1295 // Each tag is always separated by a space
6ac95d9c
A		 1296 if (isset($params['searchtags'])) {
1297 $current_tags = explode(' ', $params['searchtags']);
1298 } else {
1299 $current_tags = array();
1300 }
732e683b
FE		 1301 $addtag = true;
1302 foreach ($current_tags as $value) {
1303 if ($value === $_GET['addtag']) {
1304 $addtag = false;
1305 break;
1306 }
1307 }
1308 // Append the tag if necessary
1309 if (empty($params['searchtags'])) {
1310 $params['searchtags'] = trim($_GET['addtag']);
1311 }
1312 else if ($addtag) {
1313 $params['searchtags'] = trim($params['searchtags']).' '.trim($_GET['addtag']);
1314 }
1315
45034273
SS		 1316 unset($params['page']); // We also remove page (keeping the same page has no sense, since the results are different)
1317 header('Location: ?'.http_build_query($params));
1318 exit;
1319 }
1320
1321 // -------- User clicks on a tag in result count: Remove the tag from the list of searched tags (searchtags=...)
775803a0 1322 if (isset($_GET['removetag'])) {
45034273 1323 // Get previous URL (http_referer) and remove the tag from the searchtags parameters in query.
775803a0
A		 1324 if (empty($_SERVER['HTTP_REFERER'])) {
1325 header('Location: ?');
1326 exit;
1327 }
1328
1329 // In case browser does not send HTTP_REFERER
1330 parse_str(parse_url($_SERVER['HTTP_REFERER'], PHP_URL_QUERY), $params);
1331
1332 // Prevent redirection loop
1333 if (isset($params['removetag'])) {
1334 unset($params['removetag']);
1335 }
1336
1337 if (isset($params['searchtags'])) {
822bffce 1338 $tags = explode(' ', $params['searchtags']);
2c75f8e7
A		 1339 // Remove value from array $tags.
1340 $tags = array_diff($tags, array($_GET['removetag']));
1341 $params['searchtags'] = implode(' ',$tags);
1342
1343 if (empty($params['searchtags'])) {
775803a0 1344 unset($params['searchtags']);
775803a0 1345 }
2c75f8e7 1346
45034273
SS		 1347 unset($params['page']); // We also remove page (keeping the same page has no sense, since the results are different)
1348 }
1349 header('Location: ?'.http_build_query($params));
1350 exit;
1351 }
1352
1353 // -------- User wants to change the number of links per page (linksperpage=...)
775803a0
A		 1354 if (isset($_GET['linksperpage'])) {
1355 if (is_numeric($_GET['linksperpage'])) {
1356 $_SESSION['LINKS_PER_PAGE']=abs(intval($_GET['linksperpage']));
1357 }
1358
1359 header('Location: '. generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('linksperpage')));
45034273
SS		 1360 exit;
1361 }
bb8f712d 1362
45034273 1363 // -------- User wants to see only private links (toggle)
775803a0
A		 1364 if (isset($_GET['privateonly'])) {
1365 if (empty($_SESSION['privateonly'])) {
1366 $_SESSION['privateonly'] = 1; // See only private links
1367 } else {
45034273
SS		 1368 unset($_SESSION['privateonly']); // See all links
1369 }
775803a0
A		 1370
1371 header('Location: '. generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('privateonly')));
45034273
SS		 1372 exit;
1373 }
1374
1375 // -------- Handle other actions allowed for non-logged in users:
1376 if (!isLoggedIn())
1377 {
ad6c27b7 1378 // User tries to post new link but is not logged in:
45034273
SS		 1379 // Show login screen, then redirect to ?post=...
1380 if (isset($_GET['post']))
1381 {
a1795ddc 1382 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($_GET['source']):'')); // Redirect to login page, then back to post link.
45034273
SS		 1383 exit;
1384 }
aedc912d
FE		 1385
1386 // Same case as above except that user tried to access ?do=addlink without being logged in
1387 // Note: passing empty parameters makes Shaarli generate default URLs and descriptions.
1388 if (isset($_GET['do']) && $_GET['do'] === 'addlink') {
1389 header('Location: ?do=login&post=');
1390 exit;
1391 }
6fc14d53 1392 showLinkList($PAGE, $LINKSDB);
5fbabbb9
A		 1393 if (isset($_GET['edit_link'])) {
1394 header('Location: ?do=login&edit_link='. escape($_GET['edit_link']));
1395 exit;
1396 }
1397
ad6c27b7 1398 exit; // Never remove this one! All operations below are reserved for logged in user.
45034273
SS		 1399 }
1400
1401 // -------- All other functions are reserved for the registered user:
1402
1403 // -------- Display the Tools menu if requested (import/export/bookmarklet...)
6fc14d53 1404 if ($targetPage == Router::$PAGE_TOOLS)
45034273 1405 {
6fc14d53
A		 1406 $data = array(
1407 'linkcount' => count($LINKSDB),
1408 'pageabsaddr' => index_url($_SERVER),
1409 );
1410 $pluginManager->executeHooks('render_tools', $data);
1411
1412 foreach ($data as $key => $value) {
1413 $PAGE->assign($key, $value);
1414 }
1415
45034273
SS		 1416 $PAGE->renderPage('tools');
1417 exit;
1418 }
1419
1420 // -------- User wants to change his/her password.
6fc14d53 1421 if ($targetPage == Router::$PAGE_CHANGEPASSWORD)
45034273
SS		 1422 {
1423 if ($GLOBALS['config']['OPEN_SHAARLI']) die('You are not supposed to change a password on an Open Shaarli.');
1424 if (!empty($_POST['setpassword']) && !empty($_POST['oldpassword']))
1425 {
ad6c27b7 1426 if (!tokenOk($_POST['token'])) die('Wrong token.'); // Go away!
45034273
SS		 1427
1428 // Make sure old password is correct.
1429 $oldhash = sha1($_POST['oldpassword'].$GLOBALS['login'].$GLOBALS['salt']);
fe16b01e 1430 if ($oldhash!=$GLOBALS['hash']) { echo '<script>alert("The old password is not correct.");document.location=\'?do=changepasswd\';</script>'; exit; }
45034273
SS		 1431 // Save new password
1432 $GLOBALS['salt'] = sha1(uniqid('',true).'_'.mt_rand()); // Salt renders rainbow-tables attacks useless.
1433 $GLOBALS['hash'] = sha1($_POST['setpassword'].$GLOBALS['login'].$GLOBALS['salt']);
dd484b90
A		 1434 try {
1435 writeConfig($GLOBALS, isLoggedIn());
1436 }
1437 catch(Exception $e) {
1438 error_log(
1439 'ERROR while writing config file after changing password.' . PHP_EOL .
1440 $e->getMessage()
1441 );
1442
1443 // TODO: do not handle exceptions/errors in JS.
1444 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do=tools\';</script>';
1445 exit;
1446 }
fe16b01e 1447 echo '<script>alert("Your password has been changed.");document.location=\'?do=tools\';</script>';
45034273
SS		 1448 exit;
1449 }
1450 else // show the change password form.
1451 {
45034273
SS		 1452 $PAGE->assign('linkcount',count($LINKSDB));
1453 $PAGE->assign('token',getToken());
1454 $PAGE->renderPage('changepassword');
1455 exit;
1456 }
1457 }
1458
1459 // -------- User wants to change configuration
6fc14d53 1460 if ($targetPage == Router::$PAGE_CONFIGURE)
45034273
SS		 1461 {
1462 if (!empty($_POST['title']) )
1463 {
ad6c27b7 1464 if (!tokenOk($_POST['token'])) die('Wrong token.'); // Go away!
45034273
SS		 1465 $tz = 'UTC';
1466 if (!empty($_POST['continent']) && !empty($_POST['city']))
d1e2f8e5 1467 if (isTimeZoneValid($_POST['continent'],$_POST['city']))
45034273
SS		 1468 $tz = $_POST['continent'].'/'.$_POST['city'];
1469 $GLOBALS['timezone'] = $tz;
1470 $GLOBALS['title']=$_POST['title'];
ebb2880d 1471 $GLOBALS['titleLink']=$_POST['titleLink'];
45034273
SS		 1472 $GLOBALS['redirector']=$_POST['redirector'];
1473 $GLOBALS['disablesessionprotection']=!empty($_POST['disablesessionprotection']);
bb8f712d 1474 $GLOBALS['privateLinkByDefault']=!empty($_POST['privateLinkByDefault']);
ed5b38dd 1475 $GLOBALS['config']['ENABLE_RSS_PERMALINKS']= !empty($_POST['enableRssPermalinks']);
329e0768 1476 $GLOBALS['config']['ENABLE_UPDATECHECK'] = !empty($_POST['updateCheck']);
caee7ff9 1477 $GLOBALS['config']['HIDE_PUBLIC_LINKS'] = !empty($_POST['hidePublicLinks']);
dd484b90
A		 1478 try {
1479 writeConfig($GLOBALS, isLoggedIn());
1480 }
1481 catch(Exception $e) {
1482 error_log(
1483 'ERROR while writing config file after configuration update.' . PHP_EOL .
1484 $e->getMessage()
1485 );
1486
1487 // TODO: do not handle exceptions/errors in JS.
1488 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do=tools\';</script>';
1489 exit;
1490 }
fe16b01e 1491 echo '<script>alert("Configuration was saved.");document.location=\'?do=tools\';</script>';
45034273
SS		 1492 exit;
1493 }
1494 else // Show the configuration form.
1495 {
45034273
SS		 1496 $PAGE->assign('linkcount',count($LINKSDB));
1497 $PAGE->assign('token',getToken());
5f85fcd8
A		 1498 $PAGE->assign('title', empty($GLOBALS['title']) ? '' : $GLOBALS['title'] );
1499 $PAGE->assign('redirector', empty($GLOBALS['redirector']) ? '' : $GLOBALS['redirector'] );
d1e2f8e5
V		 1500 list($timezone_form, $timezone_js) = generateTimeZoneForm($GLOBALS['timezone']);
1501 $PAGE->assign('timezone_form', $timezone_form);
45034273
SS		 1502 $PAGE->assign('timezone_js',$timezone_js);
1503 $PAGE->renderPage('configure');
1504 exit;
1505 }
1506 }
1507
1508 // -------- User wants to rename a tag or delete it
6fc14d53 1509 if ($targetPage == Router::$PAGE_CHANGETAG)
45034273 1510 {
6a6aa2b9
A		 1511 if (empty($_POST['fromtag']) || (empty($_POST['totag']) && isset($_POST['renametag']))) {
1512 $PAGE->assign('linkcount', count($LINKSDB));
1513 $PAGE->assign('token', getToken());
bdd1715b 1514 $PAGE->assign('tags', $LINKSDB->allTags());
45034273
SS		 1515 $PAGE->renderPage('changetag');
1516 exit;
1517 }
6a6aa2b9
A		 1518
1519 if (!tokenOk($_POST['token'])) {
1520 die('Wrong token.');
1521 }
45034273
SS		 1522
1523 // Delete a tag:
6a6aa2b9 1524 if (isset($_POST['deletetag']) && !empty($_POST['fromtag'])) {
45034273 1525 $needle=trim($_POST['fromtag']);
822bffce
A		 1526 // True for case-sensitive tag search.
1527 $linksToAlter = $LINKSDB->filter(LinkFilter::$FILTER_TAG, $needle, true);
45034273
SS		 1528 foreach($linksToAlter as $key=>$value)
1529 {
1530 $tags = explode(' ',trim($value['tags']));
1531 unset($tags[array_search($needle,$tags)]); // Remove tag.
1532 $value['tags']=trim(implode(' ',$tags));
1533 $LINKSDB[$key]=$value;
1534 }
2e28269b 1535 $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']);
fe16b01e 1536 echo '<script>alert("Tag was removed from '.count($linksToAlter).' links.");document.location=\'?\';</script>';
45034273
SS		 1537 exit;
1538 }
1539
1540 // Rename a tag:
6a6aa2b9 1541 if (isset($_POST['renametag']) && !empty($_POST['fromtag']) && !empty($_POST['totag'])) {
45034273 1542 $needle=trim($_POST['fromtag']);
822bffce
A		 1543 // True for case-sensitive tag search.
1544 $linksToAlter = $LINKSDB->filter(LinkFilter::$FILTER_TAG, $needle, true);
45034273
SS		 1545 foreach($linksToAlter as $key=>$value)
1546 {
1547 $tags = explode(' ',trim($value['tags']));
ad6c27b7 1548 $tags[array_search($needle,$tags)] = trim($_POST['totag']); // Replace tags value.
45034273
SS		 1549 $value['tags']=trim(implode(' ',$tags));
1550 $LINKSDB[$key]=$value;
1551 }
01e48f26 1552 $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']); // Save to disk.
fe16b01e 1553 echo '<script>alert("Tag was renamed in '.count($linksToAlter).' links.");document.location=\'?searchtags='.urlencode($_POST['totag']).'\';</script>';
45034273
SS		 1554 exit;
1555 }
1556 }
1557
ad6c27b7 1558 // -------- User wants to add a link without using the bookmarklet: Show form.
6fc14d53 1559 if ($targetPage == Router::$PAGE_ADDLINK)
45034273 1560 {
45034273
SS		 1561 $PAGE->assign('linkcount',count($LINKSDB));
1562 $PAGE->renderPage('addlink');
1563 exit;
1564 }
1565
1566 // -------- User clicked the "Save" button when editing a link: Save link to database.
1567 if (isset($_POST['save_edit']))
1568 {
5a23950c
A		 1569 // Go away!
1570 if (! tokenOk($_POST['token'])) {
1571 die('Wrong token.');
1572 }
1573 // Remove multiple spaces.
1574 $tags = trim(preg_replace('/\s\s+/', ' ', $_POST['lf_tags']));
ce354bf1
A		 1575 // Remove first '-' char in tags.
1576 $tags = preg_replace('/(^| )\-/', '$1', $tags);
5a23950c
A		 1577 // Remove duplicates.
1578 $tags = implode(' ', array_unique(explode(' ', $tags)));
1579 $linkdate = $_POST['lf_linkdate'];
feebc6d4 1580 $url = trim($_POST['lf_url']);
5a23950c
A		 1581 if (! startsWith($url, 'http:') && ! startsWith($url, 'https:')
1582 && ! startsWith($url, 'ftp:') && ! startsWith($url, 'magnet:')
1583 && ! startsWith($url, '?') && ! startsWith($url, 'javascript:')
1584 ) {
1585 $url = 'http://' . $url;
1586 }
1587
1588 $link = array(
1589 'title' => trim($_POST['lf_title']),
1590 'url' => $url,
1591 'description' => trim($_POST['lf_description']),
1592 'private' => (isset($_POST['lf_private']) ? 1 : 0),
1593 'linkdate' => $linkdate,
1594 'tags' => str_replace(',', ' ', $tags)
1595 );
1596 // If title is empty, use the URL as title.
1597 if ($link['title'] == '') {
1598 $link['title'] = $link['url'];
1599 }
6fc14d53
A		 1600
1601 $pluginManager->executeHooks('save_link', $link);
1602
45034273 1603 $LINKSDB[$linkdate] = $link;
5a23950c 1604 $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']);
45034273
SS		 1605 pubsubhub();
1606
1607 // If we are called from the bookmarklet, we must close the popup:
d01c2342
A		 1608 if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) {
1609 echo '<script>self.close();</script>';
1610 exit;
1611 }
1612
fd50e14c 1613 $returnurl = !empty($_POST['returnurl']) ? $_POST['returnurl'] : '?';
775803a0 1614 $location = generateLocation($returnurl, $_SERVER['HTTP_HOST'], array('addlink', 'post', 'edit_link'));
5a23950c
A		 1615 // Scroll to the link which has been edited.
1616 $location .= '#' . smallHash($_POST['lf_linkdate']);
1617 // After saving the link, redirect to the page the user was on.
1618 header('Location: '. $location);
45034273
SS		 1619 exit;
1620 }
1621
1622 // -------- User clicked the "Cancel" button when editing a link.
1623 if (isset($_POST['cancel_edit']))
1624 {
ad6c27b7 1625 // If we are called from the bookmarklet, we must close the popup:
d33c5d4c 1626 if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) { echo '<script>self.close();</script>'; exit; }
45034273 1627 $returnurl = ( isset($_POST['returnurl']) ? $_POST['returnurl'] : '?' );
b342b2a4 1628 $returnurl .= '#'.smallHash($_POST['lf_linkdate']); // Scroll to the link which has been edited.
775803a0 1629 $returnurl = generateLocation($returnurl, $_SERVER['HTTP_HOST'], array('addlink', 'post', 'edit_link'));
45034273
SS		 1630 header('Location: '.$returnurl); // After canceling, redirect to the page the user was on.
1631 exit;
1632 }
1633
ad6c27b7 1634 // -------- User clicked the "Delete" button when editing a link: Delete link from database.
45034273
SS		 1635 if (isset($_POST['delete_link']))
1636 {
1637 if (!tokenOk($_POST['token'])) die('Wrong token.');
1638 // We do not need to ask for confirmation:
ad6c27b7 1639 // - confirmation is handled by JavaScript
45034273
SS		 1640 // - we are protected from XSRF by the token.
1641 $linkdate=$_POST['lf_linkdate'];
6fc14d53
A		 1642
1643 $pluginManager->executeHooks('delete_link', $LINKSDB[$linkdate]);
1644
45034273 1645 unset($LINKSDB[$linkdate]);
01e48f26 1646 $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']); // save to disk
45034273
SS		 1647
1648 // If we are called from the bookmarklet, we must close the popup:
d33c5d4c 1649 if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) { echo '<script>self.close();</script>'; exit; }
d528433d 1650 // Pick where we're going to redirect
1651 // =============================================================
1652 // Basically, we can't redirect to where we were previously if it was a permalink
1653 // or an edit_link, because it would 404.
1654 // Cases:
1655 // - / : nothing in $_GET, redirect to self
1656 // - /?page : redirect to self
d33c5d4c 1657 // - /?searchterm : redirect to self (there might be other links)
d528433d 1658 // - /?searchtags : redirect to self
1659 // - /permalink : redirect to / (the link does not exist anymore)
1660 // - /?edit_link : redirect to / (the link does not exist anymore)
1661 // PHP treats the permalink as a $_GET variable, so we need to check if every condition for self
1662 // redirect is not satisfied, and only then redirect to /
1663 $location = "?";
1664 // Self redirection
775803a0
A		 1665 if (count($_GET) == 0
1666 || isset($_GET['page'])
1667 || isset($_GET['searchterm'])
1668 || isset($_GET['searchtags'])
1669 ) {
d528433d 1670 if (isset($_POST['returnurl'])) {
1671 $location = $_POST['returnurl']; // Handle redirects given by the form
775803a0
A		 1672 } else {
1673 $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('delete_link'));
d528433d 1674 }
1675 }
1676
1677 header('Location: ' . $location); // After deleting the link, redirect to appropriate location
45034273
SS		 1678 exit;
1679 }
1680
1681 // -------- User clicked the "EDIT" button on a link: Display link edit form.
1682 if (isset($_GET['edit_link']))
1683 {
1684 $link = $LINKSDB[$_GET['edit_link']]; // Read database
1685 if (!$link) { header('Location: ?'); exit; } // Link not found in database.
6fc14d53
A		 1686 $data = array(
1687 'linkcount' => count($LINKSDB),
1688 'link' => $link,
1689 'link_is_new' => false,
1690 'token' => getToken(),
1691 'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
1692 'tags' => $LINKSDB->allTags(),
1693 );
1694 $pluginManager->executeHooks('render_editlink', $data);
1695
1696 foreach ($data as $key => $value) {
1697 $PAGE->assign($key, $value);
1698 }
1699
45034273
SS		 1700 $PAGE->renderPage('editlink');
1701 exit;
1702 }
1703
1704 // -------- User want to post a new link: Display link edit form.
d9d776af 1705 if (isset($_GET['post'])) {
1557cefb 1706 $url = cleanup_url(escape($_GET['post']));
45034273
SS		 1707
1708 $link_is_new = false;
9e1724f1 1709 // Check if URL is not already in database (in this case, we will edit the existing link)
ef591e7e 1710 $link = $LINKSDB->getLinkFromUrl($url);
45034273
SS		 1711 if (!$link)
1712 {
9e1724f1 1713 $link_is_new = true;
45034273 1714 $linkdate = strval(date('Ymd_His'));
9e1724f1 1715 // Get title if it was provided in URL (by the bookmarklet).
739dc243 1716 $title = empty($_GET['title']) ? '' : escape($_GET['title']);
9e1724f1 1717 // Get description if it was provided in URL (by the bookmarklet). [Bronco added that]
739dc243
A		 1718 $description = empty($_GET['description']) ? '' : escape($_GET['description']);
1719 $tags = empty($_GET['tags']) ? '' : escape($_GET['tags']);
1720 $private = !empty($_GET['private']) && $_GET['private'] === "1" ? 1 : 0;
26c50346 1721 // If this is an HTTP(S) link, we try go get the page to extract the title (otherwise we will to straight to the edit form.)
ef591e7e 1722 if (empty($title) && strpos(get_url_scheme($url), 'http') !== false) {
451314eb 1723 // Short timeout to keep the application responsive
1557cefb 1724 list($headers, $content) = get_http_response($url, 4);
451314eb 1725 if (strpos($headers[0], '200 OK') !== false) {
1557cefb
A		 1726 // Retrieve charset.
1727 $charset = get_charset($headers, $content);
1728 // Extract title.
1729 $title = html_extract_title($content);
1730 // Re-encode title in utf-8 if necessary.
1731 if (! empty($title) && $charset != 'utf-8') {
1732 $title = mb_convert_encoding($title, $charset, 'utf-8');
9e1724f1
A		 1733 }
1734 }
45034273 1735 }
1557cefb 1736
9e1724f1
A		 1737 if ($url == '') {
1738 $url = '?' . smallHash($linkdate);
1739 $title = 'Note: ';
27646ca5 1740 }
1557cefb 1741
9e1724f1
A		 1742 $link = array(
1743 'linkdate' => $linkdate,
1744 'title' => $title,
ef591e7e 1745 'url' => $url,
9e1724f1
A		 1746 'description' => $description,
1747 'tags' => $tags,
1748 'private' => $private
1749 );
45034273
SS		 1750 }
1751
6fc14d53
A		 1752 $data = array(
1753 'linkcount' => count($LINKSDB),
1754 'link' => $link,
1755 'link_is_new' => $link_is_new,
1756 'token' => getToken(), // XSRF protection.
1757 'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
1758 'source' => (isset($_GET['source']) ? $_GET['source'] : ''),
1759 'tags' => $LINKSDB->allTags(),
1760 );
1761 $pluginManager->executeHooks('render_editlink', $data);
1762
1763 foreach ($data as $key => $value) {
1764 $PAGE->assign($key, $value);
1765 }
1766
45034273
SS		 1767 $PAGE->renderPage('editlink');
1768 exit;
1769 }
1770
1771 // -------- Export as Netscape Bookmarks HTML file.
6fc14d53 1772 if ($targetPage == Router::$PAGE_EXPORT)
45034273
SS		 1773 {
1774 if (empty($_GET['what']))
1775 {
45034273
SS		 1776 $PAGE->assign('linkcount',count($LINKSDB));
1777 $PAGE->renderPage('export');
1778 exit;
1779 }
1780 $exportWhat=$_GET['what'];
ad6c27b7 1781 if (!array_intersect(array('all','public','private'),array($exportWhat))) die('What are you trying to export???');
45034273
SS		 1782
1783 header('Content-Type: text/html; charset=utf-8');
1784 header('Content-disposition: attachment; filename=bookmarks_'.$exportWhat.'_'.strval(date('Ymd_His')).'.html');
1785 $currentdate=date('Y/m/d H:i:s');
1786 echo <<<HTML
1787<!DOCTYPE NETSCAPE-Bookmark-file-1>
1788<!-- This is an automatically generated file.
1789 It will be read and overwritten.
1790 DO NOT EDIT! -->
1791<!-- Shaarli {$exportWhat} bookmarks export on {$currentdate} -->
1792<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8">
1793<TITLE>Bookmarks</TITLE>
1794<H1>Bookmarks</H1>
1795HTML;
1796 foreach($LINKSDB as $link)
1797 {
1798 if ($exportWhat=='all' ||
1799 ($exportWhat=='private' && $link['private']!=0) ||
1800 ($exportWhat=='public' && $link['private']==0))
1801 {
5f85fcd8
A		 1802 echo '<DT><A HREF="'.$link['url'].'" ADD_DATE="'.linkdate2timestamp($link['linkdate']).'" PRIVATE="'.$link['private'].'"';
1803 if ($link['tags']!='') echo ' TAGS="'.str_replace(' ',',',$link['tags']).'"';
1804 echo '>'.$link['title']."</A>\n";
1805 if ($link['description']!='') echo '<DD>'.$link['description']."\n";
45034273
SS		 1806 }
1807 }
1808 exit;
1809 }
1810
1811 // -------- User is uploading a file for import
1812 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=upload'))
1813 {
1814 // If file is too big, some form field may be missing.
1815 if (!isset($_POST['token']) || (!isset($_FILES)) || (isset($_FILES['filetoupload']['size']) && $_FILES['filetoupload']['size']==0))
1816 {
1817 $returnurl = ( empty($_SERVER['HTTP_REFERER']) ? '?' : $_SERVER['HTTP_REFERER'] );
5f85fcd8 1818 echo '<script>alert("The file you are trying to upload is probably bigger than what this webserver can accept ('.getMaxFileSize().' bytes). Please upload in smaller chunks.");document.location=\''.escape($returnurl).'\';</script>';
45034273
SS		 1819 exit;
1820 }
1821 if (!tokenOk($_POST['token'])) die('Wrong token.');
1822 importFile();
1823 exit;
1824 }
1825
1826 // -------- Show upload/import dialog:
6fc14d53 1827 if ($targetPage == Router::$PAGE_IMPORT)
45034273 1828 {
45034273
SS		 1829 $PAGE->assign('linkcount',count($LINKSDB));
1830 $PAGE->assign('token',getToken());
1831 $PAGE->assign('maxfilesize',getMaxFileSize());
1832 $PAGE->renderPage('import');
1833 exit;
1834 }
1835
dea0ba28
A		 1836 // Plugin administration page
1837 if ($targetPage == Router::$PAGE_PLUGINSADMIN) {
1838 $pluginMeta = $pluginManager->getPluginsMeta();
1839
1840 // Split plugins into 2 arrays: ordered enabled plugins and disabled.
1841 $enabledPlugins = array_filter($pluginMeta, function($v) { return $v['order'] !== false; });
1842 // Load parameters.
1843 $enabledPlugins = load_plugin_parameter_values($enabledPlugins, $GLOBALS['plugins']);
1844 uasort(
1845 $enabledPlugins,
1846 function($a, $b) { return $a['order'] - $b['order']; }
1847 );
1848 $disabledPlugins = array_filter($pluginMeta, function($v) { return $v['order'] === false; });
1849
1850 $PAGE->assign('enabledPlugins', $enabledPlugins);
1851 $PAGE->assign('disabledPlugins', $disabledPlugins);
1852 $PAGE->renderPage('pluginsadmin');
1853 exit;
1854 }
1855
1856 // Plugin administration form action
1857 if ($targetPage == Router::$PAGE_SAVE_PLUGINSADMIN) {
1858 try {
1859 if (isset($_POST['parameters_form'])) {
1860 unset($_POST['parameters_form']);
1861 foreach ($_POST as $param => $value) {
1862 $GLOBALS['plugins'][$param] = escape($value);
1863 }
1864 }
1865 else {
1866 $GLOBALS['config']['ENABLED_PLUGINS'] = save_plugin_config($_POST);
1867 }
1868 writeConfig($GLOBALS, isLoggedIn());
1869 }
1870 catch (Exception $e) {
1871 error_log(
1872 'ERROR while saving plugin configuration:.' . PHP_EOL .
1873 $e->getMessage()
1874 );
1875
1876 // TODO: do not handle exceptions/errors in JS.
59edea42 1877 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do='. Router::$PAGE_PLUGINSADMIN .'\';</script>';
dea0ba28
A		 1878 exit;
1879 }
1880 header('Location: ?do='. Router::$PAGE_PLUGINSADMIN);
1881 exit;
1882 }
1883
45034273 1884 // -------- Otherwise, simply display search form and links:
6fc14d53 1885 showLinkList($PAGE, $LINKSDB);
45034273
SS		 1886 exit;
1887}
1888
1889// -----------------------------------------------------------------------------------------------
1890// Process the import file form.
1891function importFile()
1892{
02ad8fb6 1893 if (!isLoggedIn()) { die('Not allowed.'); }
9f15ca9e 1894 $LINKSDB = new LinkDB(
9c8752a2 1895 $GLOBALS['config']['DATASTORE'],
02ad8fb6 1896 isLoggedIn(),
90e5bd65
A		 1897 $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
1898 $GLOBALS['redirector']
9f15ca9e 1899 );
45034273
SS		 1900 $filename=$_FILES['filetoupload']['name'];
1901 $filesize=$_FILES['filetoupload']['size'];
1902 $data=file_get_contents($_FILES['filetoupload']['tmp_name']);
ad6c27b7 1903 $private = (empty($_POST['private']) ? 0 : 1); // Should the links be imported as private?
1904 $overwrite = !empty($_POST['overwrite']) ; // Should the imported links overwrite existing ones?
45034273
SS		 1905 $import_count=0;
1906
1907 // Sniff file type:
1908 $type='unknown';
1909 if (startsWith($data,'<!DOCTYPE NETSCAPE-Bookmark-file-1>')) $type='netscape'; // Netscape bookmark file (aka Firefox).
1910
1911 // Then import the bookmarks.
1912 if ($type=='netscape')
1913 {
1914 // This is a standard Netscape-style bookmark file.
ad6c27b7 1915 // This format is supported by all browsers (except IE, of course), also Delicious, Diigo and others.
45034273
SS		 1916 foreach(explode('<DT>',$data) as $html) // explode is very fast
1917 {
1918 $link = array('linkdate'=>'','title'=>'','url'=>'','description'=>'','tags'=>'','private'=>0);
1919 $d = explode('<DD>',$html);
1920 if (startswith($d[0],'<A '))
1921 {
1922 $link['description'] = (isset($d[1]) ? html_entity_decode(trim($d[1]),ENT_QUOTES,'UTF-8') : ''); // Get description (optional)
1923 preg_match('!<A .*?>(.*?)</A>!i',$d[0],$matches); $link['title'] = (isset($matches[1]) ? trim($matches[1]) : ''); // Get title
1924 $link['title'] = html_entity_decode($link['title'],ENT_QUOTES,'UTF-8');
1925 preg_match_all('! ([A-Z_]+)=\"(.*?)"!i',$html,$matches,PREG_SET_ORDER); // Get all other attributes
1926 $raw_add_date=0;
1927 foreach($matches as $m)
1928 {
1929 $attr=$m[1]; $value=$m[2];
1930 if ($attr=='HREF') $link['url']=html_entity_decode($value,ENT_QUOTES,'UTF-8');
fc93ae1d
AA		 1931 elseif ($attr=='ADD_DATE')
1932 {
1933 $raw_add_date=intval($value);
1934 if ($raw_add_date>30000000000) $raw_add_date/=1000; //If larger than year 2920, then was likely stored in milliseconds instead of seconds
1935 }
45034273
SS		 1936 elseif ($attr=='PRIVATE') $link['private']=($value=='0'?0:1);
1937 elseif ($attr=='TAGS') $link['tags']=html_entity_decode(str_replace(',',' ',$value),ENT_QUOTES,'UTF-8');
1938 }
1939 if ($link['url']!='')
1940 {
1941 if ($private==1) $link['private']=1;
1942 $dblink = $LINKSDB->getLinkFromUrl($link['url']); // See if the link is already in database.
1943 if ($dblink==false)
1944 { // Link not in database, let's import it...
1945 if (empty($raw_add_date)) $raw_add_date=time(); // In case of shitty bookmark file with no ADD_DATE
1946
1947 // Make sure date/time is not already used by another link.
1948 // (Some bookmark files have several different links with the same ADD_DATE)
ad6c27b7 1949 // We increment date by 1 second until we find a date which is not used in DB.
45034273
SS		 1950 // (so that links that have the same date/time are more or less kept grouped by date, but do not conflict.)
1951 while (!empty($LINKSDB[date('Ymd_His',$raw_add_date)])) { $raw_add_date++; }// Yes, I know it's ugly.
1952 $link['linkdate']=date('Ymd_His',$raw_add_date);
1953 $LINKSDB[$link['linkdate']] = $link;
1954 $import_count++;
1955 }
ad6c27b7 1956 else // Link already present in database.
45034273
SS		 1957 {
1958 if ($overwrite)
1959 { // If overwrite is required, we import link data, except date/time.
1960 $link['linkdate']=$dblink['linkdate'];
1961 $LINKSDB[$link['linkdate']] = $link;
1962 $import_count++;
1963 }
1964 }
1965
1966 }
1967 }
1968 }
01e48f26 1969 $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']);
45034273 1970
fe16b01e 1971 echo '<script>alert("File '.json_encode($filename).' ('.$filesize.' bytes) was successfully processed: '.$import_count.' links imported.");document.location=\'?\';</script>';
45034273
SS		 1972 }
1973 else
1974 {
fe16b01e 1975 echo '<script>alert("File '.json_encode($filename).' ('.$filesize.' bytes) has an unknown file format. Nothing was imported.");document.location=\'?\';</script>';
45034273
SS		 1976 }
1977}
1978
1979// -----------------------------------------------------------------------------------------------
1980// Template for the list of links (<div id="linklist">)
1981// This function fills all the necessary fields in the $PAGE for the template 'linklist.html'
1982function buildLinkList($PAGE,$LINKSDB)
1983{
1984 // ---- Filter link database according to parameters
822bffce
A		 1985 $search_type = '';
1986 $search_crits = '';
1987 $privateonly = !empty($_SESSION['privateonly']) ? true : false;
1988
1989 // Fulltext search
1990 if (isset($_GET['searchterm'])) {
1991 $search_crits = escape(trim($_GET['searchterm']));
1992 $search_type = LinkFilter::$FILTER_TEXT;
1993 $linksToDisplay = $LINKSDB->filter($search_type, $search_crits, false, $privateonly);
1994 }
1995 // Search by tag
1996 elseif (isset($_GET['searchtags'])) {
1997 $search_crits = explode(' ', escape(trim($_GET['searchtags'])));
1998 $search_type = LinkFilter::$FILTER_TAG;
1999 $linksToDisplay = $LINKSDB->filter($search_type, $search_crits, false, $privateonly);
2000 }
2001 // Detect smallHashes in URL.
2002 elseif (isset($_SERVER['QUERY_STRING'])
2003 && preg_match('/[a-zA-Z0-9-_@]{6}(&.+?)?/', $_SERVER['QUERY_STRING'])) {
2004 $search_type = LinkFilter::$FILTER_HASH;
2005 $search_crits = substr(trim($_SERVER["QUERY_STRING"], '/'), 0, 6);
2006 $linksToDisplay = $LINKSDB->filter($search_type, $search_crits);
2007
2008 if (count($linksToDisplay) == 0) {
f4c84ad7 2009 $PAGE->render404('The link you are trying to reach does not exist or has been deleted.');
45034273
SS		 2010 exit;
2011 }
45034273 2012 }
822bffce
A		 2013 // Otherwise, display without filtering.
2014 else {
2015 $linksToDisplay = $LINKSDB->filter('', '', false, $privateonly);
45034273
SS		 2016 }
2017
2018 // ---- Handle paging.
822bffce
A		 2019 $keys = array();
2020 foreach ($linksToDisplay as $key => $value) {
2021 $keys[] = $key;
2022 }
45034273
SS		 2023
2024 // If there is only a single link, we change on-the-fly the title of the page.
822bffce
A		 2025 if (count($linksToDisplay) == 1) {
2026 $GLOBALS['pagetitle'] = $linksToDisplay[$keys[0]]['title'].' - '.$GLOBALS['title'];
2027 }
45034273
SS		 2028
2029 // Select articles according to paging.
822bffce
A		 2030 $pagecount = ceil(count($keys) / $_SESSION['LINKS_PER_PAGE']);
2031 $pagecount = $pagecount == 0 ? 1 : $pagecount;
2032 $page= empty($_GET['page']) ? 1 : intval($_GET['page']);
2033 $page = $page < 1 ? 1 : $page;
2034 $page = $page > $pagecount ? $pagecount : $page;
2035 // Start index.
2036 $i = ($page-1) * $_SESSION['LINKS_PER_PAGE'];
2037 $end = $i + $_SESSION['LINKS_PER_PAGE'];
2038 $linkDisp = array();
45034273
SS		 2039 while ($i<$end && $i<count($keys))
2040 {
2041 $link = $linksToDisplay[$keys[$i]];
90e5bd65 2042 $link['description'] = format_description($link['description'], $GLOBALS['redirector']);
822bffce
A		 2043 $classLi = ($i % 2) != 0 ? '' : 'publicLinkHightLight';
2044 $link['class'] = $link['private'] == 0 ? $classLi : 'private';
2045 $link['timestamp'] = linkdate2timestamp($link['linkdate']);
2046 $taglist = explode(' ', $link['tags']);
a5752e77 2047 uasort($taglist, 'strcasecmp');
822bffce 2048 $link['taglist'] = $taglist;
6fc14d53 2049 $link['shorturl'] = smallHash($link['linkdate']);
822bffce
A		 2050 // Check for both signs of a note: starting with ? and 7 chars long.
2051 if ($link['url'][0] === '?' &&
2052 strlen($link['url']) === 7) {
2053 $link['url'] = index_url($_SERVER) . $link['url'];
b47f515a 2054 }
d33c5d4c 2055
45034273
SS		 2056 $linkDisp[$keys[$i]] = $link;
2057 $i++;
2058 }
bb8f712d 2059
45034273 2060 // Compute paging navigation
822bffce
A		 2061 $searchterm = empty($_GET['searchterm']) ? '' : '&searchterm=' . $_GET['searchterm'];
2062 $searchtags = empty($_GET['searchtags']) ? '' : '&searchtags=' . $_GET['searchtags'];
2063 $previous_page_url = '';
2064 if ($i != count($keys)) {
2065 $previous_page_url = '?page=' . ($page+1) . $searchterm . $searchtags;
2066 }
2067 $next_page_url='';
2068 if ($page>1) {
2069 $next_page_url = '?page=' . ($page-1) . $searchterm . $searchtags;
2070 }
45034273 2071
822bffce
A		 2072 $token = '';
2073 if (isLoggedIn()) {
2074 $token = getToken();
2075 }
bb8f712d 2076
45034273 2077 // Fill all template fields.
6fc14d53
A		 2078 $data = array(
2079 'linkcount' => count($LINKSDB),
2080 'previous_page_url' => $previous_page_url,
2081 'next_page_url' => $next_page_url,
2082 'page_current' => $page,
2083 'page_max' => $pagecount,
2084 'result_count' => count($linksToDisplay),
2085 'search_type' => $search_type,
2086 'search_crits' => $search_crits,
2087 'redirector' => empty($GLOBALS['redirector']) ? '' : $GLOBALS['redirector'], // Optional redirector URL.
2088 'token' => $token,
2089 'links' => $linkDisp,
2090 'tags' => $LINKSDB->allTags(),
2091 );
18cca483
A		 2092 // FIXME! temporary fix - see #399.
2093 if (!empty($GLOBALS['pagetitle']) && count($linkDisp) == 1) {
2094 $data['pagetitle'] = $GLOBALS['pagetitle'];
2095 }
6fc14d53
A		 2096
2097 $pluginManager = PluginManager::getInstance();
2098 $pluginManager->executeHooks('render_linklist', $data, array('loggedin' => isLoggedIn()));
2099
2100 foreach ($data as $key => $value) {
2101 $PAGE->assign($key, $value);
2102 }
2103
45034273
SS		 2104 return;
2105}
2106
2107// Compute the thumbnail for a link.
bb8f712d 2108//
ad6c27b7 2109// With a link to the original URL.
45034273 2110// Understands various services (youtube.com...)
ad6c27b7 2111// Input: $url = URL for which the thumbnail must be found.
45034273
SS		 2112// $href = if provided, this URL will be followed instead of $url
2113// Returns an associative array with thumbnail attributes (src,href,width,height,style,alt)
2114// Some of them may be missing.
2115// Return an empty array if no thumbnail available.
2116function computeThumbnail($url,$href=false)
2117{
2118 if (!$GLOBALS['config']['ENABLE_THUMBNAILS']) return array();
2119 if ($href==false) $href=$url;
2120
2121 // For most hosts, the URL of the thumbnail can be easily deduced from the URL of the link.
ad6c27b7 2122 // (e.g. http://www.youtube.com/watch?v=spVypYk4kto ---> http://img.youtube.com/vi/spVypYk4kto/default.jpg )
45034273
SS		 2123 // ^^^^^^^^^^^ ^^^^^^^^^^^
2124 $domain = parse_url($url,PHP_URL_HOST);
2125 if ($domain=='youtube.com' || $domain=='www.youtube.com')
2126 {
2127 parse_str(parse_url($url,PHP_URL_QUERY), $params); // Extract video ID and get thumbnail
1a663a0f 2128 if (!empty($params['v'])) return array('src'=>'https://img.youtube.com/vi/'.$params['v'].'/default.jpg',
45034273
SS		 2129 'href'=>$href,'width'=>'120','height'=>'90','alt'=>'YouTube thumbnail');
2130 }
2131 if ($domain=='youtu.be') // Youtube short links
2132 {
2133 $path = parse_url($url,PHP_URL_PATH);
1a663a0f 2134 return array('src'=>'https://img.youtube.com/vi'.$path.'/default.jpg',
bb8f712d 2135 'href'=>$href,'width'=>'120','height'=>'90','alt'=>'YouTube thumbnail');
45034273
SS		 2136 }
2137 if ($domain=='pix.toile-libre.org') // pix.toile-libre.org image hosting
2138 {
2139 parse_str(parse_url($url,PHP_URL_QUERY), $params); // Extract image filename.
2140 if (!empty($params) && !empty($params['img'])) return array('src'=>'http://pix.toile-libre.org/upload/thumb/'.urlencode($params['img']),
bb8f712d
KT		 2141 'href'=>$href,'style'=>'max-width:120px; max-height:150px','alt'=>'pix.toile-libre.org thumbnail');
2142 }
2143
45034273
SS		 2144 if ($domain=='imgur.com')
2145 {
2146 $path = parse_url($url,PHP_URL_PATH);
2147 if (startsWith($path,'/a/')) return array(); // Thumbnails for albums are not available.
1a663a0f 2148 if (startsWith($path,'/r/')) return array('src'=>'https://i.imgur.com/'.basename($path).'s.jpg',
45034273 2149 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
1a663a0f 2150 if (startsWith($path,'/gallery/')) return array('src'=>'https://i.imgur.com'.substr($path,8).'s.jpg',
45034273
SS		 2151 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
2152
1a663a0f 2153 if (substr_count($path,'/')==1) return array('src'=>'https://i.imgur.com/'.substr($path,1).'s.jpg',
45034273
SS		 2154 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
2155 }
2156 if ($domain=='i.imgur.com')
2157 {
2158 $pi = pathinfo(parse_url($url,PHP_URL_PATH));
1a663a0f 2159 if (!empty($pi['filename'])) return array('src'=>'https://i.imgur.com/'.$pi['filename'].'s.jpg',
45034273
SS		 2160 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
2161 }
2162 if ($domain=='dailymotion.com' || $domain=='www.dailymotion.com')
2163 {
2164 if (strpos($url,'dailymotion.com/video/')!==false)
2165 {
2166 $thumburl=str_replace('dailymotion.com/video/','dailymotion.com/thumbnail/video/',$url);
2167 return array('src'=>$thumburl,
2168 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'DailyMotion thumbnail');
2169 }
2170 }
2171 if (endsWith($domain,'.imageshack.us'))
2172 {
2173 $ext=strtolower(pathinfo($url,PATHINFO_EXTENSION));
2174 if ($ext=='jpg' || $ext=='jpeg' || $ext=='png' || $ext=='gif')
2175 {
2176 $thumburl = substr($url,0,strlen($url)-strlen($ext)).'th.'.$ext;
2177 return array('src'=>$thumburl,
2178 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'imageshack.us thumbnail');
2179 }
2180 }
2181
2182 // Some other hosts are SLOW AS HELL and usually require an extra HTTP request to get the thumbnail URL.
2183 // So we deport the thumbnail generation in order not to slow down page generation
2184 // (and we also cache the thumbnail)
2185
2186 if (!$GLOBALS['config']['ENABLE_LOCALCACHE']) return array(); // If local cache is disabled, no thumbnails for services which require the use a local cache.
2187
2188 if ($domain=='flickr.com' || endsWith($domain,'.flickr.com')
2189 || $domain=='vimeo.com'
2190 || $domain=='ted.com' || endsWith($domain,'.ted.com')
2191 || $domain=='xkcd.com' || endsWith($domain,'.xkcd.com')
2192 )
2193 {
2194 if ($domain=='vimeo.com')
ad6c27b7 2195 { // Make sure this vimeo URL points to a video (/xxx... where xxx is numeric)
45034273
SS		 2196 $path = parse_url($url,PHP_URL_PATH);
2197 if (!preg_match('!/\d+.+?!',$path)) return array(); // This is not a single video URL.
2198 }
2199 if ($domain=='xkcd.com' || endsWith($domain,'.xkcd.com'))
ad6c27b7 2200 { // Make sure this URL points to a single comic (/xxx... where xxx is numeric)
45034273
SS		 2201 $path = parse_url($url,PHP_URL_PATH);
2202 if (!preg_match('!/\d+.+?!',$path)) return array();
2203 }
2204 if ($domain=='ted.com' || endsWith($domain,'.ted.com'))
ad6c27b7 2205 { // Make sure this TED URL points to a video (/talks/...)
45034273
SS		 2206 $path = parse_url($url,PHP_URL_PATH);
2207 if ("/talks/" !== substr($path,0,7)) return array(); // This is not a single video URL.
2208 }
2209 $sign = hash_hmac('sha256', $url, $GLOBALS['salt']); // We use the salt to sign data (it's random, secret, and specific to each installation)
482d67bd 2210 return array('src'=>index_url($_SERVER).'?do=genthumbnail&hmac='.$sign.'&url='.urlencode($url),
45034273
SS		 2211 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'thumbnail');
2212 }
2213
2214 // For all other, we try to make a thumbnail of links ending with .jpg/jpeg/png/gif
2215 // Technically speaking, we should download ALL links and check their Content-Type to see if they are images.
2216 // But using the extension will do.
2217 $ext=strtolower(pathinfo($url,PATHINFO_EXTENSION));
2218 if ($ext=='jpg' || $ext=='jpeg' || $ext=='png' || $ext=='gif')
2219 {
2220 $sign = hash_hmac('sha256', $url, $GLOBALS['salt']); // We use the salt to sign data (it's random, secret, and specific to each installation)
482d67bd 2221 return array('src'=>index_url($_SERVER).'?do=genthumbnail&hmac='.$sign.'&url='.urlencode($url),
bb8f712d 2222 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'thumbnail');
45034273
SS		 2223 }
2224 return array(); // No thumbnail.
2225
2226}
2227
2228
2229// Returns the HTML code to display a thumbnail for a link
2230// with a link to the original URL.
2231// Understands various services (youtube.com...)
ad6c27b7 2232// Input: $url = URL for which the thumbnail must be found.
45034273
SS		 2233// $href = if provided, this URL will be followed instead of $url
2234// Returns '' if no thumbnail available.
2235function thumbnail($url,$href=false)
2236{
2237 $t = computeThumbnail($url,$href);
2238 if (count($t)==0) return ''; // Empty array = no thumbnail for this URL.
bb8f712d 2239
5f85fcd8
A		 2240 $html='<a href="'.escape($t['href']).'"><img src="'.escape($t['src']).'"';
2241 if (!empty($t['width'])) $html.=' width="'.escape($t['width']).'"';
2242 if (!empty($t['height'])) $html.=' height="'.escape($t['height']).'"';
2243 if (!empty($t['style'])) $html.=' style="'.escape($t['style']).'"';
2244 if (!empty($t['alt'])) $html.=' alt="'.escape($t['alt']).'"';
45034273
SS		 2245 $html.='></a>';
2246 return $html;
2247}
2248
45034273
SS		 2249// Returns the HTML code to display a thumbnail for a link
2250// for the picture wall (using lazy image loading)
2251// Understands various services (youtube.com...)
ad6c27b7 2252// Input: $url = URL for which the thumbnail must be found.
45034273
SS		 2253// $href = if provided, this URL will be followed instead of $url
2254// Returns '' if no thumbnail available.
2255function lazyThumbnail($url,$href=false)
2256{
bb8f712d 2257 $t = computeThumbnail($url,$href);
45034273
SS		 2258 if (count($t)==0) return ''; // Empty array = no thumbnail for this URL.
2259
5f85fcd8 2260 $html='<a href="'.escape($t['href']).'">';
bb8f712d 2261
34047d23 2262 // Lazy image
5f85fcd8 2263 $html.='<img class="b-lazy" src="#" data-src="'.escape($t['src']).'"';
858c5c2b 2264
5f85fcd8
A		 2265 if (!empty($t['width'])) $html.=' width="'.escape($t['width']).'"';
2266 if (!empty($t['height'])) $html.=' height="'.escape($t['height']).'"';
2267 if (!empty($t['style'])) $html.=' style="'.escape($t['style']).'"';
2268 if (!empty($t['alt'])) $html.=' alt="'.escape($t['alt']).'"';
45034273 2269 $html.='>';
bb8f712d 2270
ad6c27b7 2271 // No-JavaScript fallback.
5f85fcd8
A		 2272 $html.='<noscript><img src="'.escape($t['src']).'"';
2273 if (!empty($t['width'])) $html.=' width="'.escape($t['width']).'"';
2274 if (!empty($t['height'])) $html.=' height="'.escape($t['height']).'"';
2275 if (!empty($t['style'])) $html.=' style="'.escape($t['style']).'"';
2276 if (!empty($t['alt'])) $html.=' alt="'.escape($t['alt']).'"';
45034273 2277 $html.='></noscript></a>';
bb8f712d 2278
45034273
SS		 2279 return $html;
2280}
2281
2282
2283// -----------------------------------------------------------------------------------------------
2284// Installation
2285// This function should NEVER be called if the file data/config.php exists.
2286function install()
2287{
2288 // On free.fr host, make sure the /sessions directory exists, otherwise login will not work.
f6a6ca0a 2289 if (endsWith($_SERVER['HTTP_HOST'],'.free.fr') && !is_dir($_SERVER['DOCUMENT_ROOT'].'/sessions')) mkdir($_SERVER['DOCUMENT_ROOT'].'/sessions',0705);
45034273 2290
f37664a2
SS		 2291
2292 // This part makes sure sessions works correctly.
2293 // (Because on some hosts, session.save_path may not be set correctly,
2294 // or we may not have write access to it.)
2295 if (isset($_GET['test_session']) && ( !isset($_SESSION) || !isset($_SESSION['session_tested']) || $_SESSION['session_tested']!='Working'))
2296 { // Step 2: Check if data in session is correct.
2297 echo '<pre>Sessions do not seem to work correctly on your server.<br>';
2298 echo 'Make sure the variable session.save_path is set correctly in your php config, and that you have write access to it.<br>';
01ec1791 2299 echo 'It currently points to '.session_save_path().'<br>';
2300 echo 'Check that the hostname used to access Shaarli contains a dot. On some browsers, accessing your server via a hostname like \'localhost\' or any custom hostname without a dot causes cookie storage to fail. We recommend accessing your server via it\'s IP address or Fully Qualified Domain Name.<br>';
2301 echo '<br><a href="?">Click to try again.</a></pre>';
f37664a2
SS		 2302 die;
2303 }
2304 if (!isset($_SESSION['session_tested']))
2305 { // Step 1 : Try to store data in session and reload page.
2306 $_SESSION['session_tested'] = 'Working'; // Try to set a variable in session.
482d67bd 2307 header('Location: '.index_url($_SERVER).'?test_session'); // Redirect to check stored data.
f37664a2
SS		 2308 }
2309 if (isset($_GET['test_session']))
ad6c27b7 2310 { // Step 3: Sessions are OK. Remove test parameter from URL.
482d67bd 2311 header('Location: '.index_url($_SERVER));
f37664a2
SS		 2312 }
2313
2314
45034273
SS		 2315 if (!empty($_POST['setlogin']) && !empty($_POST['setpassword']))
2316 {
2317 $tz = 'UTC';
d1e2f8e5
V		 2318 if (!empty($_POST['continent']) && !empty($_POST['city'])) {
2319 if (isTimeZoneValid($_POST['continent'], $_POST['city'])) {
45034273 2320 $tz = $_POST['continent'].'/'.$_POST['city'];
d1e2f8e5
V		 2321 }
2322 }
45034273
SS		 2323 $GLOBALS['timezone'] = $tz;
2324 // Everything is ok, let's create config file.
2325 $GLOBALS['login'] = $_POST['setlogin'];
2326 $GLOBALS['salt'] = sha1(uniqid('',true).'_'.mt_rand()); // Salt renders rainbow-tables attacks useless.
2327 $GLOBALS['hash'] = sha1($_POST['setpassword'].$GLOBALS['login'].$GLOBALS['salt']);
482d67bd 2328 $GLOBALS['title'] = (empty($_POST['title']) ? 'Shared links on '.escape(index_url($_SERVER)) : $_POST['title'] );
329e0768 2329 $GLOBALS['config']['ENABLE_UPDATECHECK'] = !empty($_POST['updateCheck']);
dd484b90
A		 2330 try {
2331 writeConfig($GLOBALS, isLoggedIn());
2332 }
2333 catch(Exception $e) {
2334 error_log(
2335 'ERROR while writing config file after installation.' . PHP_EOL .
2336 $e->getMessage()
2337 );
2338
2339 // TODO: do not handle exceptions/errors in JS.
2340 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?\';</script>';
2341 exit;
2342 }
fe16b01e 2343 echo '<script>alert("Shaarli is now configured. Please enter your login/password and start shaaring your links!");document.location=\'?do=login\';</script>';
45034273
SS		 2344 exit;
2345 }
2346
2347 // Display config form:
d1e2f8e5
V		 2348 list($timezone_form, $timezone_js) = generateTimeZoneForm();
2349 $timezone_html = '';
2350 if ($timezone_form != '') {
2351 $timezone_html = '<tr><td><b>Timezone:</b></td><td>'.$timezone_form.'</td></tr>';
2352 }
bb8f712d 2353
45034273
SS		 2354 $PAGE = new pageBuilder;
2355 $PAGE->assign('timezone_html',$timezone_html);
2356 $PAGE->assign('timezone_js',$timezone_js);
2357 $PAGE->renderPage('install');
2358 exit;
2359}
2360
ad6c27b7 2361/* Because some f*cking services like flickr require an extra HTTP request to get the thumbnail URL,
45034273 2362 I have deported the thumbnail URL code generation here, otherwise this would slow down page generation.
ad6c27b7 2363 The following function takes the URL a link (e.g. a flickr page) and return the proper thumbnail.
2364 This function is called by passing the URL:
45034273 2365 http://mywebsite.com/shaarli/?do=genthumbnail&hmac=[HMAC]&url=[URL]
ad6c27b7 2366 [URL] is the URL of the link (e.g. a flickr page)
45034273
SS		 2367 [HMAC] is the signature for the [URL] (so that these URL cannot be forged).
2368 The function below will fetch the image from the webservice and store it in the cache.
2369*/
2370function genThumbnail()
2371{
2372 // Make sure the parameters in the URL were generated by us.
2373 $sign = hash_hmac('sha256', $_GET['url'], $GLOBALS['salt']);
ad6c27b7 2374 if ($sign!=$_GET['hmac']) die('Naughty boy!');
45034273
SS		 2375
2376 // Let's see if we don't already have the image for this URL in the cache.
2377 $thumbname=hash('sha1',$_GET['url']).'.jpg';
2378 if (is_file($GLOBALS['config']['CACHEDIR'].'/'.$thumbname))
2379 { // We have the thumbnail, just serve it:
2380 header('Content-Type: image/jpeg');
2381 echo file_get_contents($GLOBALS['config']['CACHEDIR'].'/'.$thumbname);
2382 return;
2383 }
2384 // We may also serve a blank image (if service did not respond)
2385 $blankname=hash('sha1',$_GET['url']).'.gif';
2386 if (is_file($GLOBALS['config']['CACHEDIR'].'/'.$blankname))
2387 {
2388 header('Content-Type: image/gif');
2389 echo file_get_contents($GLOBALS['config']['CACHEDIR'].'/'.$blankname);
2390 return;
2391 }
2392
2393 // Otherwise, generate the thumbnail.
2394 $url = $_GET['url'];
2395 $domain = parse_url($url,PHP_URL_HOST);
2396
2397 if ($domain=='flickr.com' || endsWith($domain,'.flickr.com'))
2398 {
ad6c27b7 2399 // Crude replacement to handle new flickr domain policy (They prefer www. now)
45034273
SS		 2400 $url = str_replace('http://flickr.com/','http://www.flickr.com/',$url);
2401
2402 // Is this a link to an image, or to a flickr page ?
2403 $imageurl='';
2404 if (endswith(parse_url($url,PHP_URL_PATH),'.jpg'))
ad6c27b7 2405 { // This is a direct link to an image. e.g. http://farm1.staticflickr.com/5/5921913_ac83ed27bd_o.jpg
45034273
SS		 2406 preg_match('!(http://farm\d+\.staticflickr\.com/\d+/\d+_\w+_)\w.jpg!',$url,$matches);
2407 if (!empty($matches[1])) $imageurl=$matches[1].'m.jpg';
2408 }
ad6c27b7 2409 else // This is a flickr page (html)
45034273 2410 {
451314eb 2411 // Get the flickr html page.
1557cefb 2412 list($headers, $content) = get_http_response($url, 20);
451314eb 2413 if (strpos($headers[0], '200 OK') !== false)
45034273 2414 {
ad6c27b7 2415 // flickr now nicely provides the URL of the thumbnail in each flickr page.
1557cefb 2416 preg_match('!<link rel=\"image_src\" href=\"(.+?)\"!', $content, $matches);
45034273
SS		 2417 if (!empty($matches[1])) $imageurl=$matches[1];
2418
2419 // In albums (and some other pages), the link rel="image_src" is not provided,
2420 // but flickr provides:
2421 // <meta property="og:image" content="http://farm4.staticflickr.com/3398/3239339068_25d13535ff_z.jpg" />
2422 if ($imageurl=='')
2423 {
1557cefb 2424 preg_match('!<meta property=\"og:image\" content=\"(.+?)\"!', $content, $matches);
45034273
SS		 2425 if (!empty($matches[1])) $imageurl=$matches[1];
2426 }
2427 }
2428 }
2429
2430 if ($imageurl!='')
2431 { // Let's download the image.
451314eb 2432 // Image is 240x120, so 10 seconds to download should be enough.
1557cefb 2433 list($headers, $content) = get_http_response($imageurl, 10);
451314eb 2434 if (strpos($headers[0], '200 OK') !== false) {
1557cefb
A		 2435 // Save image to cache.
2436 file_put_contents($GLOBALS['config']['CACHEDIR'].'/' . $thumbname, $content);
45034273 2437 header('Content-Type: image/jpeg');
1557cefb 2438 echo $content;
45034273
SS		 2439 return;
2440 }
2441 }
2442 }
2443
2444 elseif ($domain=='vimeo.com' )
2445 {
2446 // This is more complex: we have to perform a HTTP request, then parse the result.
ad6c27b7 2447 // Maybe we should deport this to JavaScript ? Example: http://stackoverflow.com/questions/1361149/get-img-thumbnails-from-vimeo/4285098#4285098
45034273 2448 $vid = substr(parse_url($url,PHP_URL_PATH),1);
1557cefb 2449 list($headers, $content) = get_http_response('https://vimeo.com/api/v2/video/'.escape($vid).'.php', 5);
451314eb 2450 if (strpos($headers[0], '200 OK') !== false) {
1557cefb 2451 $t = unserialize($content);
45034273
SS		 2452 $imageurl = $t[0]['thumbnail_medium'];
2453 // Then we download the image and serve it to our client.
1557cefb 2454 list($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=='ted.com' || endsWith($domain,'.ted.com'))
2466 {
2467 // The thumbnail for TED talks is located in the <link rel="image_src" [...]> tag on that page
2468 // http://www.ted.com/talks/mikko_hypponen_fighting_viruses_defending_the_net.html
2469 // <link rel="image_src" href="http://images.ted.com/images/ted/28bced335898ba54d4441809c5b1112ffaf36781_389x292.jpg" />
1557cefb 2470 list($headers, $content) = get_http_response($url, 5);
451314eb 2471 if (strpos($headers[0], '200 OK') !== false) {
45034273 2472 // Extract the link to the thumbnail
1557cefb 2473 preg_match('!link rel="image_src" href="(http://images.ted.com/images/ted/.+_\d+x\d+\.jpg)"!', $content, $matches);
45034273
SS		 2474 if (!empty($matches[1]))
2475 { // Let's download the image.
2476 $imageurl=$matches[1];
451314eb 2477 // No control on image size, so wait long enough
1557cefb 2478 list($headers, $content) = get_http_response($imageurl, 20);
451314eb 2479 if (strpos($headers[0], '200 OK') !== false) {
45034273 2480 $filepath=$GLOBALS['config']['CACHEDIR'].'/'.$thumbname;
1557cefb 2481 file_put_contents($filepath, $content); // Save image to cache.
45034273
SS		 2482 if (resizeImage($filepath))
2483 {
2484 header('Content-Type: image/jpeg');
2485 echo file_get_contents($filepath);
2486 return;
2487 }
2488 }
2489 }
2490 }
2491 }
bb8f712d 2492
45034273
SS		 2493 elseif ($domain=='xkcd.com' || endsWith($domain,'.xkcd.com'))
2494 {
2495 // There is no thumbnail available for xkcd comics, so download the whole image and resize it.
2496 // http://xkcd.com/327/
2497 // <img src="http://imgs.xkcd.com/comics/exploits_of_a_mom.png" title="<BLABLA>" alt="<BLABLA>" />
1557cefb 2498 list($headers, $content) = get_http_response($url, 5);
451314eb 2499 if (strpos($headers[0], '200 OK') !== false) {
45034273 2500 // Extract the link to the thumbnail
1557cefb 2501 preg_match('!<img src="(http://imgs.xkcd.com/comics/.*)" title="[^s]!', $content, $matches);
45034273
SS		 2502 if (!empty($matches[1]))
2503 { // Let's download the image.
2504 $imageurl=$matches[1];
451314eb 2505 // No control on image size, so wait long enough
1557cefb 2506 list($headers, $content) = get_http_response($imageurl, 20);
451314eb 2507 if (strpos($headers[0], '200 OK') !== false) {
45034273 2508 $filepath=$GLOBALS['config']['CACHEDIR'].'/'.$thumbname;
1557cefb
A		 2509 // Save image to cache.
2510 file_put_contents($filepath, $content);
45034273
SS		 2511 if (resizeImage($filepath))
2512 {
2513 header('Content-Type: image/jpeg');
2514 echo file_get_contents($filepath);
2515 return;
2516 }
2517 }
2518 }
2519 }
bb8f712d 2520 }
45034273
SS		 2521
2522 else
2523 {
2524 // For all other domains, we try to download the image and make a thumbnail.
451314eb 2525 // We allow 30 seconds max to download (and downloads are limited to 4 Mb)
1557cefb 2526 list($headers, $content) = get_http_response($url, 30);
451314eb 2527 if (strpos($headers[0], '200 OK') !== false) {
45034273 2528 $filepath=$GLOBALS['config']['CACHEDIR'].'/'.$thumbname;
1557cefb
A		 2529 // Save image to cache.
2530 file_put_contents($filepath, $content);
45034273
SS		 2531 if (resizeImage($filepath))
2532 {
2533 header('Content-Type: image/jpeg');
2534 echo file_get_contents($filepath);
2535 return;
2536 }
2537 }
2538 }
2539
2540
2541 // Otherwise, return an empty image (8x8 transparent gif)
2542 $blankgif = base64_decode('R0lGODlhCAAIAIAAAP///////yH5BAEKAAEALAAAAAAIAAgAAAIHjI+py+1dAAA7');
2543 file_put_contents($GLOBALS['config']['CACHEDIR'].'/'.$blankname,$blankgif); // Also put something in cache so that this URL is not requested twice.
2544 header('Content-Type: image/gif');
2545 echo $blankgif;
2546}
2547
2548// Make a thumbnail of the image (to width: 120 pixels)
2549// Returns true if success, false otherwise.
2550function resizeImage($filepath)
2551{
2552 if (!function_exists('imagecreatefromjpeg')) return false; // GD not present: no thumbnail possible.
2553
2554 // Trick: some stupid people rename GIF as JPEG... or else.
2555 // So we really try to open each image type whatever the extension is.
2556 $header=file_get_contents($filepath,false,NULL,0,256); // Read first 256 bytes and try to sniff file type.
2557 $im=false;
2558 $i=strpos($header,'GIF8'); if (($i!==false) && ($i==0)) $im = imagecreatefromgif($filepath); // Well this is crude, but it should be enough.
2559 $i=strpos($header,'PNG'); if (($i!==false) && ($i==1)) $im = imagecreatefrompng($filepath);
2560 $i=strpos($header,'JFIF'); if ($i!==false) $im = imagecreatefromjpeg($filepath);
2561 if (!$im) return false; // Unable to open image (corrupted or not an image)
2562 $w = imagesx($im);
2563 $h = imagesy($im);
2564 $ystart = 0; $yheight=$h;
2565 if ($h>$w) { $ystart= ($h/2)-($w/2); $yheight=$w/2; }
2566 $nw = 120; // Desired width
2567 $nh = min(floor(($h*$nw)/$w),120); // Compute new width/height, but maximum 120 pixels height.
2568 // Resize image:
2569 $im2 = imagecreatetruecolor($nw,$nh);
2570 imagecopyresampled($im2, $im, 0, 0, 0, $ystart, $nw, $nh, $w, $yheight);
2571 imageinterlace($im2,true); // For progressive JPEG.
2572 $tempname=$filepath.'_TEMP.jpg';
2573 imagejpeg($im2, $tempname, 90);
2574 imagedestroy($im);
2575 imagedestroy($im2);
9e820906 2576 unlink($filepath);
45034273
SS		 2577 rename($tempname,$filepath); // Overwrite original picture with thumbnail.
2578 return true;
2579}
2580
45034273
SS		 2581if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=genthumbnail')) { genThumbnail(); exit; } // Thumbnail generation/cache does not need the link database.
2582if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=rss')) { showRSS(); exit; }
2583if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=atom')) { showATOM(); exit; }
2584if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=dailyrss')) { showDailyRSS(); exit; }
45034273
SS		 2585if (!isset($_SESSION['LINKS_PER_PAGE'])) $_SESSION['LINKS_PER_PAGE']=$GLOBALS['config']['LINKS_PER_PAGE'];
2586renderPage();
03545ef6 2587?>
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