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Merge pull request #552 from shaarli/readme-doc-plugins
[github/shaarli/Shaarli.git] / index.php
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45034273 1<?php
49e2b35b 2/**
797a6f30 3 * Shaarli v0.6.5 - Shaare your links...
49e2b35b
V		 4 *
5 * The personal, minimalist, super-fast, no-database Delicious clone.
6 *
7 * Friendly fork by the Shaarli community:
8 * - https://github.com/shaarli/Shaarli
9 *
10 * Original project by sebsauvage.net:
11 * - http://sebsauvage.net/wiki/doku.php?id=php:shaarli
12 * - https://github.com/sebsauvage/Shaarli
13 *
14 * Licence: http://www.opensource.org/licenses/zlib-license.php
15 *
16 * Requires: PHP 5.3.x
17 */
afd7b77b
V		 18
19// Set 'UTC' as the default timezone if it is not defined in php.ini
20// See http://php.net/manual/en/datetime.configuration.php#ini.date.timezone
21if (date_default_timezone_get() == '') {
22 date_default_timezone_set('UTC');
23}
cb49ab94 24
28bb2b74
V		 25/* -----------------------------------------------------------------------------
26 * Hardcoded parameters
27 * You should not touch any code below (or at your own risks!)
28 * (These parameters can be overwritten by editing the file /data/config.php)
29 * -----------------------------------------------------------------------------
30 */
31
32/*
33 * Shaarli directories & configuration files
34 */
35// Data subdirectory
36$GLOBALS['config']['DATADIR'] = 'data';
37
38// Main configuration file
39$GLOBALS['config']['CONFIG_FILE'] = $GLOBALS['config']['DATADIR'].'/config.php';
40
41// Link datastore
42$GLOBALS['config']['DATASTORE'] = $GLOBALS['config']['DATADIR'].'/datastore.php';
43
44// Banned IPs
45$GLOBALS['config']['IPBANS_FILENAME'] = $GLOBALS['config']['DATADIR'].'/ipbans.php';
46
510377d2
A		 47// Processed updates file.
48$GLOBALS['config']['UPDATES_FILE'] = $GLOBALS['config']['DATADIR'].'/updates.txt';
49
2e28269b
V		 50// Access log
51$GLOBALS['config']['LOG_FILE'] = $GLOBALS['config']['DATADIR'].'/log.txt';
52
28bb2b74
V		 53// For updates check of Shaarli
54$GLOBALS['config']['UPDATECHECK_FILENAME'] = $GLOBALS['config']['DATADIR'].'/lastupdatecheck.txt';
55
7c873f1c
A		 56// Set ENABLE_UPDATECHECK to disabled by default.
57$GLOBALS['config']['ENABLE_UPDATECHECK'] = false;
58
28bb2b74
V		 59// RainTPL cache directory (keep the trailing slash!)
60$GLOBALS['config']['RAINTPL_TMP'] = 'tmp/';
61// Raintpl template directory (keep the trailing slash!)
62$GLOBALS['config']['RAINTPL_TPL'] = 'tpl/';
63
2e28269b 64// Thumbnail cache directory
28bb2b74
V		 65$GLOBALS['config']['CACHEDIR'] = 'cache';
66
67// Atom & RSS feed cache directory
68$GLOBALS['config']['PAGECACHE'] = 'pagecache';
69
28bb2b74
V		 70/*
71 * Global configuration
72 */
73// Ban IP after this many failures
74$GLOBALS['config']['BAN_AFTER'] = 4;
75// Ban duration for IP address after login failures (in seconds)
76$GLOBALS['config']['BAN_DURATION'] = 1800;
77
78// Feed options
79// Enable RSS permalinks by default.
80// This corresponds to the default behavior of shaarli before this was added as an option.
81$GLOBALS['config']['ENABLE_RSS_PERMALINKS'] = true;
82// If true, an extra "ATOM feed" button will be displayed in the toolbar
83$GLOBALS['config']['SHOW_ATOM'] = false;
84
85// Link display options
caee7ff9 86$GLOBALS['config']['HIDE_PUBLIC_LINKS'] = false;
28bb2b74
V		 87$GLOBALS['config']['HIDE_TIMESTAMPS'] = false;
88$GLOBALS['config']['LINKS_PER_PAGE'] = 20;
89
90// Open Shaarli (true): anyone can add/edit/delete links without having to login
91$GLOBALS['config']['OPEN_SHAARLI'] = false;
92
93// Thumbnails
94// Display thumbnails in links
95$GLOBALS['config']['ENABLE_THUMBNAILS'] = true;
96// Store thumbnails in a local cache
97$GLOBALS['config']['ENABLE_LOCALCACHE'] = true;
98
99// Update check frequency for Shaarli. 86400 seconds=24 hours
4407b45f
V		 100$GLOBALS['config']['UPDATECHECK_BRANCH'] = 'stable';
101$GLOBALS['config']['UPDATECHECK_INTERVAL'] = 86400;
28bb2b74 102
043eae70 103$GLOBALS['config']['REDIRECTOR_URLENCODE'] = true;
28bb2b74
V		 104
105/*
106 * Plugin configuration
107 *
108 * Warning: order matters!
109 *
110 * These settings may be be overriden in:
111 * - data/config.php
112 * - each plugin's configuration file
113 */
6fc14d53
A		 114//$GLOBALS['config']['ENABLED_PLUGINS'] = array(
115// 'qrcode', 'archiveorg', 'readityourself', 'demo_plugin', 'playvideos',
116// 'wallabag', 'markdown', 'addlink_toolbar',
117//);
6fc14d53
A		 118$GLOBALS['config']['ENABLED_PLUGINS'] = array('qrcode');
119
091e2d13
A		 120// Initialize plugin parameters array.
121$GLOBALS['plugins'] = array();
28bb2b74
V		 122
123// PubSubHubbub support. Put an empty string to disable, or put your hub url here to enable.
124$GLOBALS['config']['PUBSUBHUB_URL'] = '';
125
126/*
127 * PHP configuration
128 */
797a6f30 129define('shaarli_version', '0.6.5');
28bb2b74 130
ae00595b
CH		 131// http://server.com/x/shaarli --> /shaarli/
132define('WEB_PATH', substr($_SERVER["REQUEST_URI"], 0, 1+strrpos($_SERVER["REQUEST_URI"], '/', 0)));
45034273 133
28bb2b74
V		 134// High execution time in case of problematic imports/exports.
135ini_set('max_input_time','60');
136
137// Try to set max upload file size and read
138ini_set('memory_limit', '128M');
45034273
SS		 139ini_set('post_max_size', '16M');
140ini_set('upload_max_filesize', '16M');
45034273 141
28bb2b74
V		 142// See all error except warnings
143error_reporting(E_ALL^E_WARNING);
144// See all errors (for debugging only)
145//error_reporting(-1);
146
147/*
148 * User configuration
149 */
50c9a12e
V		 150if (is_file($GLOBALS['config']['CONFIG_FILE'])) {
151 require_once $GLOBALS['config']['CONFIG_FILE'];
152}
153
ca74886f 154// Shaarli library
2e28269b 155require_once 'application/ApplicationUtils.php';
01e48f26
V		 156require_once 'application/Cache.php';
157require_once 'application/CachedPage.php';
82e36802 158require_once 'application/FeedBuilder.php';
2e28269b 159require_once 'application/FileUtils.php';
451314eb 160require_once 'application/HttpUtils.php';
ca74886f 161require_once 'application/LinkDB.php';
822bffce 162require_once 'application/LinkFilter.php';
1557cefb 163require_once 'application/LinkUtils.php';
cd5327be 164require_once 'application/NetscapeBookmarkUtils.php';
d1e2f8e5 165require_once 'application/TimeZone.php';
d9d776af 166require_once 'application/Url.php';
ca74886f 167require_once 'application/Utils.php';
dd484b90 168require_once 'application/Config.php';
6fc14d53
A		 169require_once 'application/PluginManager.php';
170require_once 'application/Router.php';
510377d2 171require_once 'application/Updater.php';
ca74886f 172
d1e2f8e5
V		 173// Ensure the PHP version is supported
174try {
c9cf2715 175 ApplicationUtils::checkPHPVersion('5.3', PHP_VERSION);
2e28269b 176} catch(Exception $exc) {
d1e2f8e5 177 header('Content-Type: text/plain; charset=utf-8');
2e28269b 178 echo $exc->getMessage();
d1e2f8e5
V		 179 exit;
180}
181
06b6660a
A		 182// Force cookie path (but do not change lifetime)
183$cookie = session_get_cookie_params();
184$cookiedir = '';
185if (dirname($_SERVER['SCRIPT_NAME']) != '/') {
186 $cookiedir = dirname($_SERVER["SCRIPT_NAME"]).'/';
187}
188// Set default cookie expiration and path.
189session_set_cookie_params($cookie['lifetime'], $cookiedir, $_SERVER['SERVER_NAME']);
190// Set session parameters on server side.
191// If the user does not access any page within this time, his/her session is considered expired.
192define('INACTIVITY_TIMEOUT', 3600); // in seconds.
193// Use cookies to store session.
194ini_set('session.use_cookies', 1);
195// Force cookies for session (phpsessionID forbidden in URL).
196ini_set('session.use_only_cookies', 1);
197// Prevent PHP form using sessionID in URL if cookies are disabled.
198ini_set('session.use_trans_sid', false);
199
06b6660a
A		 200session_name('shaarli');
201// Start session if needed (Some server auto-start sessions).
202if (session_id() == '') {
203 session_start();
204}
205
68bc2135
V		 206// Regenerate session ID if invalid or not defined in cookie.
207if (isset($_COOKIE['shaarli']) && !is_session_id_valid($_COOKIE['shaarli'])) {
208 session_regenerate_id(true);
209 $_COOKIE['shaarli'] = session_id();
210}
211
45034273 212include "inc/rain.tpl.class.php"; //include Rain TPL
25f5c59d 213raintpl::$tpl_dir = $GLOBALS['config']['RAINTPL_TPL']; // template directory
25f5c59d 214raintpl::$cache_dir = $GLOBALS['config']['RAINTPL_TMP']; // cache directory
45034273 215
6fc14d53
A		 216$pluginManager = PluginManager::getInstance();
217$pluginManager->load($GLOBALS['config']['ENABLED_PLUGINS']);
218
45034273
SS		 219ob_start(); // Output buffering for the page cache.
220
221
222// In case stupid admin has left magic_quotes enabled in php.ini:
223if (get_magic_quotes_gpc())
224{
225 function stripslashes_deep($value) { $value = is_array($value) ? array_map('stripslashes_deep', $value) : stripslashes($value); return $value; }
226 $_POST = array_map('stripslashes_deep', $_POST);
227 $_GET = array_map('stripslashes_deep', $_GET);
228 $_COOKIE = array_map('stripslashes_deep', $_COOKIE);
229}
230
231// Prevent caching on client side or proxy: (yes, it's ugly)
232header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
233header("Cache-Control: no-store, no-cache, must-revalidate");
234header("Cache-Control: post-check=0, pre-check=0", false);
235header("Pragma: no-cache");
236
45034273 237// Handling of old config file which do not have the new parameters.
482d67bd 238if (empty($GLOBALS['title'])) $GLOBALS['title']='Shared links on '.escape(index_url($_SERVER));
45034273 239if (empty($GLOBALS['timezone'])) $GLOBALS['timezone']=date_default_timezone_get();
8a80e4fe 240if (empty($GLOBALS['redirector'])) $GLOBALS['redirector']='';
45034273 241if (empty($GLOBALS['disablesessionprotection'])) $GLOBALS['disablesessionprotection']=false;
bb8f712d 242if (empty($GLOBALS['privateLinkByDefault'])) $GLOBALS['privateLinkByDefault']=false;
ebb2880d 243if (empty($GLOBALS['titleLink'])) $GLOBALS['titleLink']='?';
858c5c2b 244// I really need to rewrite Shaarli with a proper configuation manager.
45034273 245
50c9a12e 246if (! is_file($GLOBALS['config']['CONFIG_FILE'])) {
2e28269b
V		 247 // Ensure Shaarli has proper access to its resources
248 $errors = ApplicationUtils::checkResourcePermissions($GLOBALS['config']);
249
250 if ($errors != array()) {
251 $message = '<p>Insufficient permissions:</p><ul>';
252
253 foreach ($errors as $error) {
254 $message .= '<li>'.$error.'</li>';
255 }
256 $message .= '</ul>';
257
258 header('Content-Type: text/html; charset=utf-8');
259 echo $message;
260 exit;
261 }
262
263 // Display the installation form if no existing config is found
50c9a12e
V		 264 install();
265}
8a80e4fe 266
5f85fcd8
A		 267$GLOBALS['title'] = !empty($GLOBALS['title']) ? escape($GLOBALS['title']) : '';
268$GLOBALS['titleLink'] = !empty($GLOBALS['titleLink']) ? escape($GLOBALS['titleLink']) : '';
269$GLOBALS['redirector'] = !empty($GLOBALS['redirector']) ? escape($GLOBALS['redirector']) : '';
8a80e4fe 270
ae00595b
CH		 271// a token depending of deployment salt, user password, and the current ip
272define('STAY_SIGNED_IN_TOKEN', sha1($GLOBALS['hash'].$_SERVER["REMOTE_ADDR"].$GLOBALS['salt']));
8a80e4fe 273
408def1a
A		 274// Sniff browser language and set date format accordingly.
275if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
276 autoLocale($_SERVER['HTTP_ACCEPT_LANGUAGE']);
277}
45034273
SS		 278header('Content-Type: text/html; charset=utf-8'); // We use UTF-8 for proper international characters handling.
279
ff69d87e
FE		 280//==================================================================================================
281// Checking session state (i.e. is the user still logged in)
282//==================================================================================================
283
284function setup_login_state() {
ff69d87e 285 if ($GLOBALS['config']['OPEN_SHAARLI']) {
02ad8fb6 286 return true;
ff69d87e 287 }
02ad8fb6
JP		 288 $userIsLoggedIn = false; // By default, we do not consider the user as logged in;
289 $loginFailure = false; // If set to true, every attempt to authenticate the user will fail. This indicates that an important condition isn't met.
ff69d87e
FE		 290 if (!isset($GLOBALS['login'])) {
291 $userIsLoggedIn = false; // Shaarli is not configured yet.
292 $loginFailure = true;
293 }
294 if (isset($_COOKIE['shaarli_staySignedIn']) &&
295 $_COOKIE['shaarli_staySignedIn']===STAY_SIGNED_IN_TOKEN &&
296 !$loginFailure)
297 {
298 fillSessionInfo();
299 $userIsLoggedIn = true;
300 }
301 // If session does not exist on server side, or IP address has changed, or session has expired, logout.
302 if (empty($_SESSION['uid']) ||
303 ($GLOBALS['disablesessionprotection']==false && $_SESSION['ip']!=allIPs()) ||
304 time() >= $_SESSION['expires_on'])
305 {
306 logout();
307 $userIsLoggedIn = false;
308 $loginFailure = true;
309 }
310 if (!empty($_SESSION['longlastingsession'])) {
311 $_SESSION['expires_on']=time()+$_SESSION['longlastingsession']; // In case of "Stay signed in" checked.
312 }
313 else {
314 $_SESSION['expires_on']=time()+INACTIVITY_TIMEOUT; // Standard session expiration date.
315 }
316 if (!$loginFailure) {
317 $userIsLoggedIn = true;
318 }
319
320 return $userIsLoggedIn;
321}
ff69d87e 322$userIsLoggedIn = setup_login_state();
45034273 323
45034273
SS		 324// ------------------------------------------------------------------------------------------
325// PubSubHubbub protocol support (if enabled) [UNTESTED]
326// (Source: http://aldarone.fr/les-flux-rss-shaarli-et-pubsubhubbub/ )
327if (!empty($GLOBALS['config']['PUBSUBHUB_URL'])) include './publisher.php';
328function pubsubhub()
329{
330 if (!empty($GLOBALS['config']['PUBSUBHUB_URL']))
331 {
332 $p = new Publisher($GLOBALS['config']['PUBSUBHUB_URL']);
333 $topic_url = array (
482d67bd
V		 334 index_url($_SERVER).'?do=atom',
335 index_url($_SERVER).'?do=rss'
45034273
SS		 336 );
337 $p->publish_update($topic_url);
338 }
339}
340
341// ------------------------------------------------------------------------------------------
342// Session management
45034273
SS		 343
344// Returns the IP address of the client (Used to prevent session cookie hijacking.)
345function allIPs()
346{
347 $ip = $_SERVER["REMOTE_ADDR"];
348 // Then we use more HTTP headers to prevent session hijacking from users behind the same proxy.
349 if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) { $ip=$ip.'_'.$_SERVER['HTTP_X_FORWARDED_FOR']; }
350 if (isset($_SERVER['HTTP_CLIENT_IP'])) { $ip=$ip.'_'.$_SERVER['HTTP_CLIENT_IP']; }
351 return $ip;
352}
353
ae00595b 354function fillSessionInfo() {
ad6c27b7 355 $_SESSION['uid'] = sha1(uniqid('',true).'_'.mt_rand()); // Generate unique random number (different than phpsessionid)
ae00595b
CH		 356 $_SESSION['ip']=allIPs(); // We store IP address(es) of the client to make sure session is not hijacked.
357 $_SESSION['username']=$GLOBALS['login'];
358 $_SESSION['expires_on']=time()+INACTIVITY_TIMEOUT; // Set session expiration.
359}
360
45034273
SS		 361// Check that user/password is correct.
362function check_auth($login,$password)
363{
364 $hash = sha1($password.$login.$GLOBALS['salt']);
365 if ($login==$GLOBALS['login'] && $hash==$GLOBALS['hash'])
366 { // Login/password is correct.
ae00595b 367 fillSessionInfo();
1abe6555 368 logm($GLOBALS['config']['LOG_FILE'], $_SERVER['REMOTE_ADDR'], 'Login successful');
45034273
SS		 369 return True;
370 }
1abe6555 371 logm($GLOBALS['config']['LOG_FILE'], $_SERVER['REMOTE_ADDR'], 'Login failed for user '.$login);
45034273
SS		 372 return False;
373}
374
375// Returns true if the user is logged in.
376function isLoggedIn()
377{
ff69d87e
FE		 378 global $userIsLoggedIn;
379 return $userIsLoggedIn;
45034273
SS		 380}
381
382// Force logout.
ff69d87e
FE		 383function logout() {
384 if (isset($_SESSION)) {
385 unset($_SESSION['uid']);
386 unset($_SESSION['ip']);
387 unset($_SESSION['username']);
388 unset($_SESSION['privateonly']);
389 }
390 setcookie('shaarli_staySignedIn', FALSE, 0, WEB_PATH);
ae00595b 391}
45034273
SS		 392
393
394// ------------------------------------------------------------------------------------------
395// Brute force protection system
396// Several consecutive failed logins will ban the IP address for 30 minutes.
397if (!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?>");
398include $GLOBALS['config']['IPBANS_FILENAME'];
399// Signal a failed login. Will ban the IP if too many failures:
400function ban_loginFailed()
401{
402 $ip=$_SERVER["REMOTE_ADDR"]; $gb=$GLOBALS['IPBANS'];
403 if (!isset($gb['FAILURES'][$ip])) $gb['FAILURES'][$ip]=0;
404 $gb['FAILURES'][$ip]++;
405 if ($gb['FAILURES'][$ip]>($GLOBALS['config']['BAN_AFTER']-1))
406 {
407 $gb['BANS'][$ip]=time()+$GLOBALS['config']['BAN_DURATION'];
1abe6555 408 logm($GLOBALS['config']['LOG_FILE'], $_SERVER['REMOTE_ADDR'], 'IP address banned from login');
45034273
SS		 409 }
410 $GLOBALS['IPBANS'] = $gb;
411 file_put_contents($GLOBALS['config']['IPBANS_FILENAME'], "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>");
412}
413
414// Signals a successful login. Resets failed login counter.
415function ban_loginOk()
416{
417 $ip=$_SERVER["REMOTE_ADDR"]; $gb=$GLOBALS['IPBANS'];
418 unset($gb['FAILURES'][$ip]); unset($gb['BANS'][$ip]);
419 $GLOBALS['IPBANS'] = $gb;
420 file_put_contents($GLOBALS['config']['IPBANS_FILENAME'], "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>");
421}
422
423// Checks if the user CAN login. If 'true', the user can try to login.
424function ban_canLogin()
425{
426 $ip=$_SERVER["REMOTE_ADDR"]; $gb=$GLOBALS['IPBANS'];
427 if (isset($gb['BANS'][$ip]))
428 {
429 // User is banned. Check if the ban has expired:
430 if ($gb['BANS'][$ip]<=time())
431 { // Ban expired, user can try to login again.
1abe6555 432 logm($GLOBALS['config']['LOG_FILE'], $_SERVER['REMOTE_ADDR'], 'Ban lifted.');
45034273
SS		 433 unset($gb['FAILURES'][$ip]); unset($gb['BANS'][$ip]);
434 file_put_contents($GLOBALS['config']['IPBANS_FILENAME'], "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>");
435 return true; // Ban has expired, user can login.
436 }
437 return false; // User is banned.
438 }
439 return true; // User is not banned.
440}
441
442// ------------------------------------------------------------------------------------------
443// Process login form: Check if login/password is correct.
444if (isset($_POST['login']))
445{
446 if (!ban_canLogin()) die('I said: NO. You are banned for the moment. Go away.');
447 if (isset($_POST['password']) && tokenOk($_POST['token']) && (check_auth($_POST['login'], $_POST['password'])))
ad6c27b7 448 { // Login/password is OK.
45034273
SS		 449 ban_loginOk();
450 // If user wants to keep the session cookie even after the browser closes:
451 if (!empty($_POST['longlastingsession']))
452 {
ae00595b 453 setcookie('shaarli_staySignedIn', STAY_SIGNED_IN_TOKEN, time()+31536000, WEB_PATH);
45034273
SS		 454 $_SESSION['longlastingsession']=31536000; // (31536000 seconds = 1 year)
455 $_SESSION['expires_on']=time()+$_SESSION['longlastingsession']; // Set session expiration on server-side.
2d9fab88
SS		 456
457 $cookiedir = ''; if(dirname($_SERVER['SCRIPT_NAME'])!='/') $cookiedir=dirname($_SERVER["SCRIPT_NAME"]).'/';
2f32d074 458 session_set_cookie_params($_SESSION['longlastingsession'],$cookiedir,$_SERVER['SERVER_NAME']); // Set session cookie expiration on client side
ad6c27b7 459 // Note: Never forget the trailing slash on the cookie path!
45034273
SS		 460 session_regenerate_id(true); // Send cookie with new expiration date to browser.
461 }
462 else // Standard session expiration (=when browser closes)
463 {
2d9fab88 464 $cookiedir = ''; if(dirname($_SERVER['SCRIPT_NAME'])!='/') $cookiedir=dirname($_SERVER["SCRIPT_NAME"]).'/';
2f32d074 465 session_set_cookie_params(0,$cookiedir,$_SERVER['SERVER_NAME']); // 0 means "When browser closes"
45034273
SS		 466 session_regenerate_id(true);
467 }
f4c84ad7 468
45034273 469 // Optional redirect after login:
5fbabbb9
A		 470 if (isset($_GET['post'])) {
471 $uri = '?post='. urlencode($_GET['post']);
472 foreach (array('description', 'source', 'title') as $param) {
473 if (!empty($_GET[$param])) {
474 $uri .= '&'.$param.'='.urlencode($_GET[$param]);
475 }
476 }
477 header('Location: '. $uri);
478 exit;
479 }
480
481 if (isset($_GET['edit_link'])) {
482 header('Location: ?edit_link='. escape($_GET['edit_link']));
483 exit;
484 }
485
486 if (isset($_POST['returnurl'])) {
487 // Prevent loops over login screen.
488 if (strpos($_POST['returnurl'], 'do=login') === false) {
e15f08d7 489 header('Location: '. generateLocation($_POST['returnurl'], $_SERVER['HTTP_HOST']));
5fbabbb9
A		 490 exit;
491 }
45034273
SS		 492 }
493 header('Location: ?'); exit;
494 }
495 else
496 {
497 ban_loginFailed();
705f8355 498 $redir = '';
5fbabbb9
A		 499 if (isset($_GET['post'])) {
500 $redir = '?post=' . urlencode($_GET['post']);
501 foreach (array('description', 'source', 'title') as $param) {
502 if (!empty($_GET[$param])) {
503 $redir .= '&' . $param . '=' . urlencode($_GET[$param]);
504 }
505 }
506 }
fe16b01e 507 echo '<script>alert("Wrong login/password.");document.location=\'?do=login'.$redir.'\';</script>'; // Redirect to login screen.
45034273
SS		 508 exit;
509 }
510}
511
512// ------------------------------------------------------------------------------------------
513// Misc utility functions:
514
ad6c27b7 515// Convert post_max_size/upload_max_filesize (e.g. '16M') parameters to bytes.
45034273
SS		 516function return_bytes($val)
517{
518 $val = trim($val); $last=strtolower($val[strlen($val)-1]);
519 switch($last)
520 {
521 case 'g': $val *= 1024;
522 case 'm': $val *= 1024;
523 case 'k': $val *= 1024;
524 }
525 return $val;
526}
527
528// Try to determine max file size for uploads (POST).
529// Returns an integer (in bytes)
530function getMaxFileSize()
531{
532 $size1 = return_bytes(ini_get('post_max_size'));
533 $size2 = return_bytes(ini_get('upload_max_filesize'));
534 // Return the smaller of two:
535 $maxsize = min($size1,$size2);
ad6c27b7 536 // FIXME: Then convert back to readable notations ? (e.g. 2M instead of 2000000)
45034273
SS		 537 return $maxsize;
538}
539
45034273
SS		 540// ------------------------------------------------------------------------------------------
541// Token management for XSRF protection
542// Token should be used in any form which acts on data (create,update,delete,import...).
543if (!isset($_SESSION['tokens'])) $_SESSION['tokens']=array(); // Token are attached to the session.
544
545// Returns a token.
546function getToken()
547{
a1f5a6ec 548 $rnd = sha1(uniqid('',true).'_'.mt_rand().$GLOBALS['salt']); // We generate a random string.
45034273
SS		 549 $_SESSION['tokens'][$rnd]=1; // Store it on the server side.
550 return $rnd;
551}
552
ad6c27b7 553// Tells if a token is OK. Using this function will destroy the token.
554// true=token is OK.
45034273
SS		 555function tokenOk($token)
556{
557 if (isset($_SESSION['tokens'][$token]))
558 {
559 unset($_SESSION['tokens'][$token]); // Token is used: destroy it.
ad6c27b7 560 return true; // Token is OK.
45034273
SS		 561 }
562 return false; // Wrong token, or already used.
563}
564
565// ------------------------------------------------------------------------------------------
566/* This class is in charge of building the final page.
567 (This is basically a wrapper around RainTPL which pre-fills some fields.)
568 p = new pageBuilder;
569 p.assign('myfield','myvalue');
570 p.renderPage('mytemplate');
bb8f712d 571
45034273
SS		 572*/
573class pageBuilder
574{
575 private $tpl; // RainTPL template
576
577 function __construct()
578 {
056107ab 579 $this->tpl = false;
bb8f712d 580 }
45034273 581
056107ab
A		 582 /**
583 * Initialize all default tpl tags.
584 */
45034273 585 private function initialize()
bb8f712d
KT		 586 {
587 $this->tpl = new RainTPL;
4407b45f
V		 588
589 try {
590 $version = ApplicationUtils::checkUpdate(
591 shaarli_version,
592 $GLOBALS['config']['UPDATECHECK_FILENAME'],
593 $GLOBALS['config']['UPDATECHECK_INTERVAL'],
594 $GLOBALS['config']['ENABLE_UPDATECHECK'],
595 isLoggedIn(),
596 $GLOBALS['config']['UPDATECHECK_BRANCH']
597 );
598 $this->tpl->assign('newVersion', escape($version));
4a7af975 599 $this->tpl->assign('versionError', '');
4407b45f
V		 600
601 } catch (Exception $exc) {
1abe6555 602 logm($GLOBALS['config']['LOG_FILE'], $_SERVER['REMOTE_ADDR'], $exc->getMessage());
4a7af975 603 $this->tpl->assign('newVersion', '');
4407b45f
V		 604 $this->tpl->assign('versionError', escape($exc->getMessage()));
605 }
606
056107ab
A		 607 $this->tpl->assign('feedurl', escape(index_url($_SERVER)));
608 $searchcrits = ''; // Search criteria
609 if (!empty($_GET['searchtags'])) {
610 $searchcrits .= '&searchtags=' . urlencode($_GET['searchtags']);
611 }
c51fae92 612 if (!empty($_GET['searchterm'])) {
056107ab
A		 613 $searchcrits .= '&searchterm=' . urlencode($_GET['searchterm']);
614 }
615 $this->tpl->assign('searchcrits', $searchcrits);
616 $this->tpl->assign('source', index_url($_SERVER));
617 $this->tpl->assign('version', shaarli_version);
618 $this->tpl->assign('scripturl', index_url($_SERVER));
619 $this->tpl->assign('pagetitle', 'Shaarli');
620 $this->tpl->assign('privateonly', !empty($_SESSION['privateonly'])); // Show only private links?
621 if (!empty($GLOBALS['title'])) {
622 $this->tpl->assign('pagetitle', $GLOBALS['title']);
623 }
624 if (!empty($GLOBALS['titleLink'])) {
625 $this->tpl->assign('titleLink', $GLOBALS['titleLink']);
626 }
627 if (!empty($GLOBALS['pagetitle'])) {
628 $this->tpl->assign('pagetitle', $GLOBALS['pagetitle']);
629 }
630 $this->tpl->assign('shaarlititle', empty($GLOBALS['title']) ? 'Shaarli': $GLOBALS['title']);
e4b9a763
A		 631 if (!empty($GLOBALS['plugin_errors'])) {
632 $this->tpl->assign('plugin_errors', $GLOBALS['plugin_errors']);
056107ab 633 }
45034273 634 }
bb8f712d 635
45034273
SS		 636 // The following assign() method is basically the same as RainTPL (except that it's lazy)
637 public function assign($what,$where)
638 {
639 if ($this->tpl===false) $this->initialize(); // Lazy initialization
640 $this->tpl->assign($what,$where);
641 }
bb8f712d 642
1c2fdb98
A		 643 /**
644 * Assign an array of data to the template builder.
645 *
646 * @param array $data Data to assign.
647 *
648 * @return false if invalid data.
649 */
650 public function assignAll($data)
651 {
652 // Lazy initialization
653 if ($this->tpl === false) {
654 $this->initialize();
655 }
656
657 if (empty($data) || !is_array($data)){
658 return false;
659 }
660
661 foreach ($data as $key => $value) {
662 $this->assign($key, $value);
663 }
664 }
665
45034273 666 // Render a specific page (using a template).
ad6c27b7 667 // e.g. pb.renderPage('picwall')
45034273
SS		 668 public function renderPage($page)
669 {
670 if ($this->tpl===false) $this->initialize(); // Lazy initialization
671 $this->tpl->draw($page);
672 }
f4c84ad7
D		 673
674 /**
675 * Render a 404 page (uses the template : tpl/404.tpl)
676 *
677 * usage : $PAGE->render404('The link was deleted')
678 * @param string $message A messate to display what is not found
679 */
680 public function render404($message='The page you are trying to reach does not exist or has been deleted.') {
681 header($_SERVER['SERVER_PROTOCOL'] . ' 404 Not Found');
682 $this->tpl->assign('error_message', $message);
683 $this->renderPage('404');
684 }
45034273
SS		 685}
686
45034273
SS		 687// ------------------------------------------------------------------------------------------
688// Daily RSS feed: 1 RSS entry per day giving all the links on that day.
689// Gives the last 7 days (which have links).
690// This RSS feed cannot be filtered.
f3b8f9f0 691function showDailyRSS() {
45034273
SS		 692 // Cache system
693 $query = $_SERVER["QUERY_STRING"];
01e48f26
V		 694 $cache = new CachedPage(
695 $GLOBALS['config']['PAGECACHE'],
482d67bd 696 page_url($_SERVER),
01e48f26
V		 697 startsWith($query,'do=dailyrss') && !isLoggedIn()
698 );
f3b8f9f0
A		 699 $cached = $cache->cachedVersion();
700 if (!empty($cached)) {
701 echo $cached;
702 exit;
703 }
9f15ca9e 704
f3b8f9f0
A		 705 // If cached was not found (or not usable), then read the database and build the response:
706 // Read links from database (and filter private links if used it not logged in).
9f15ca9e 707 $LINKSDB = new LinkDB(
9c8752a2 708 $GLOBALS['config']['DATASTORE'],
02ad8fb6 709 isLoggedIn(),
90e5bd65 710 $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
043eae70
A		 711 $GLOBALS['redirector'],
712 $GLOBALS['config']['REDIRECTOR_URLENCODE']
9f15ca9e 713 );
bb8f712d 714
45034273
SS		 715 /* Some Shaarlies may have very few links, so we need to look
716 back in time (rsort()) until we have enough days ($nb_of_days).
717 */
f3b8f9f0
A		 718 $linkdates = array();
719 foreach ($LINKSDB as $linkdate => $value) {
720 $linkdates[] = $linkdate;
721 }
45034273 722 rsort($linkdates);
f3b8f9f0
A		 723 $nb_of_days = 7; // We take 7 days.
724 $today = Date('Ymd');
725 $days = array();
726
727 foreach ($linkdates as $linkdate) {
728 $day = substr($linkdate, 0, 8); // Extract day (without time)
729 if (strcmp($day,$today) < 0) {
730 if (empty($days[$day])) {
731 $days[$day] = array();
732 }
733 $days[$day][] = $linkdate;
734 }
735
736 if (count($days) > $nb_of_days) {
737 break; // Have we collected enough days?
45034273 738 }
45034273 739 }
bb8f712d 740
45034273
SS		 741 // Build the RSS feed.
742 header('Content-Type: application/rss+xml; charset=utf-8');
482d67bd 743 $pageaddr = escape(index_url($_SERVER));
45034273 744 echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0">';
f3b8f9f0
A		 745 echo '<channel>';
746 echo '<title>Daily - '. $GLOBALS['title'] . '</title>';
747 echo '<link>'. $pageaddr .'</link>';
748 echo '<description>Daily shared links</description>';
749 echo '<language>en-en</language>';
750 echo '<copyright>'. $pageaddr .'</copyright>'. PHP_EOL;
751
752 // For each day.
753 foreach ($days as $day => $linkdates) {
205a4277 754 $dayDate = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $day.'_000000');
482d67bd 755 $absurl = escape(index_url($_SERVER).'?do=daily&day='.$day); // Absolute URL of the corresponding "Daily" page.
bb8f712d 756
45034273 757 // Build the HTML body of this RSS entry.
f3b8f9f0
A		 758 $html = '';
759 $href = '';
760 $links = array();
761
45034273 762 // We pre-format some fields for proper output.
f3b8f9f0 763 foreach ($linkdates as $linkdate) {
45034273 764 $l = $LINKSDB[$linkdate];
90e5bd65 765 $l['formatedDescription'] = format_description($l['description'], $GLOBALS['redirector']);
bb8f712d 766 $l['thumbnail'] = thumbnail($l['url']);
205a4277
V		 767 $l_date = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $l['linkdate']);
768 $l['timestamp'] = $l_date->getTimestamp();
f3b8f9f0 769 if (startsWith($l['url'], '?')) {
482d67bd 770 $l['url'] = index_url($_SERVER) . $l['url']; // make permalink URL absolute
f3b8f9f0
A		 771 }
772 $links[$linkdate] = $l;
45034273 773 }
f3b8f9f0 774
45034273 775 // Then build the HTML for this day:
bb8f712d 776 $tpl = new RainTPL;
f3b8f9f0 777 $tpl->assign('title', $GLOBALS['title']);
205a4277 778 $tpl->assign('daydate', $dayDate->getTimestamp());
f3b8f9f0
A		 779 $tpl->assign('absurl', $absurl);
780 $tpl->assign('links', $links);
205a4277 781 $tpl->assign('rssdate', escape($dayDate->format(DateTime::RSS)));
f3b8f9f0 782 $html = $tpl->draw('dailyrss', $return_string=true);
45034273 783
f3b8f9f0 784 echo $html . PHP_EOL;
bb8f712d 785 }
482d67bd 786 echo '</channel></rss><!-- Cached version of '. escape(page_url($_SERVER)) .' -->';
bb8f712d 787
45034273
SS		 788 $cache->cache(ob_get_contents());
789 ob_end_flush();
790 exit;
791}
792
38603b24
A		 793/**
794 * Show the 'Daily' page.
795 *
796 * @param PageBuilder $pageBuilder Template engine wrapper.
043eae70 797 * @param LinkDB $LINKSDB LinkDB instance.
38603b24 798 */
043eae70 799function showDaily($pageBuilder, $LINKSDB)
45034273 800{
45034273
SS		 801 $day=Date('Ymd',strtotime('-1 day')); // Yesterday, in format YYYYMMDD.
802 if (isset($_GET['day'])) $day=$_GET['day'];
bb8f712d 803
45034273
SS		 804 $days = $LINKSDB->days();
805 $i = array_search($day,$days);
f3db3774 806 if ($i===false) { $i=count($days)-1; $day=$days[$i]; }
bb8f712d
KT		 807 $previousday='';
808 $nextday='';
45034273
SS		 809 if ($i!==false)
810 {
f3db3774 811 if ($i>=1) $previousday=$days[$i-1];
45034273
SS		 812 if ($i<count($days)-1) $nextday=$days[$i+1];
813 }
814
9186ab95 815 try {
528a6f8a 816 $linksToDisplay = $LINKSDB->filterDay($day);
9186ab95
V		 817 } catch (Exception $exc) {
818 error_log($exc);
d1e2f8e5 819 $linksToDisplay = array();
9186ab95
V		 820 }
821
45034273
SS		 822 // We pre-format some fields for proper output.
823 foreach($linksToDisplay as $key=>$link)
824 {
5f85fcd8 825
dd62b9ba
SS		 826 $taglist = explode(' ',$link['tags']);
827 uasort($taglist, 'strcasecmp');
828 $linksToDisplay[$key]['taglist']=$taglist;
90e5bd65 829 $linksToDisplay[$key]['formatedDescription'] = format_description($link['description'], $GLOBALS['redirector']);
bb8f712d 830 $linksToDisplay[$key]['thumbnail'] = thumbnail($link['url']);
205a4277
V		 831 $date = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $link['linkdate']);
832 $linksToDisplay[$key]['timestamp'] = $date->getTimestamp();
45034273 833 }
bb8f712d 834
45034273 835 /* We need to spread the articles on 3 columns.
ad6c27b7 836 I did not want to use a JavaScript lib like http://masonry.desandro.com/
bb8f712d 837 so I manually spread entries with a simple method: I roughly evaluate the
45034273
SS		 838 height of a div according to title and description length.
839 */
840 $columns=array(array(),array(),array()); // Entries to display, for each column.
841 $fill=array(0,0,0); // Rough estimate of columns fill.
842 foreach($linksToDisplay as $key=>$link)
843 {
844 // Roughly estimate length of entry (by counting characters)
845 // Title: 30 chars = 1 line. 1 line is 30 pixels height.
846 // Description: 836 characters gives roughly 342 pixel height.
ad6c27b7 847 // This is not perfect, but it's usually OK.
45034273
SS		 848 $length=strlen($link['title'])+(342*strlen($link['description']))/836;
849 if ($link['thumbnail']) $length +=100; // 1 thumbnails roughly takes 100 pixels height.
850 // Then put in column which is the less filled:
851 $smallest=min($fill); // find smallest value in array.
852 $index=array_search($smallest,$fill); // find index of this smallest value.
853 array_push($columns[$index],$link); // Put entry in this column.
854 $fill[$index]+=$length;
855 }
38603b24 856
205a4277 857 $dayDate = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $day.'_000000');
6fc14d53
A		 858 $data = array(
859 'linksToDisplay' => $linksToDisplay,
860 'linkcount' => count($LINKSDB),
861 'cols' => $columns,
205a4277 862 'day' => $dayDate->getTimestamp(),
6fc14d53
A		 863 'previousday' => $previousday,
864 'nextday' => $nextday,
865 );
866 $pluginManager = PluginManager::getInstance();
867 $pluginManager->executeHooks('render_daily', $data, array('loggedin' => isLoggedIn()));
868
869 foreach ($data as $key => $value) {
38603b24 870 $pageBuilder->assign($key, $value);
6fc14d53
A		 871 }
872
38603b24 873 $pageBuilder->renderPage('daily');
45034273
SS		 874 exit;
875}
876
6fc14d53
A		 877// Renders the linklist
878function showLinkList($PAGE, $LINKSDB) {
879 buildLinkList($PAGE,$LINKSDB); // Compute list of links to display
880 $PAGE->renderPage('linklist');
881}
882
45034273
SS		 883
884// ------------------------------------------------------------------------------------------
885// Render HTML page (according to URL parameters and user rights)
886function renderPage()
887{
9f15ca9e 888 $LINKSDB = new LinkDB(
9c8752a2 889 $GLOBALS['config']['DATASTORE'],
02ad8fb6 890 isLoggedIn(),
90e5bd65 891 $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
043eae70
A		 892 $GLOBALS['redirector'],
893 $GLOBALS['config']['REDIRECTOR_URLENCODE']
9f15ca9e 894 );
45034273 895
510377d2
A		 896 $updater = new Updater(
897 read_updates_file($GLOBALS['config']['UPDATES_FILE']),
898 $GLOBALS,
899 $LINKSDB,
900 isLoggedIn()
901 );
902 try {
903 $newUpdates = $updater->update();
904 if (! empty($newUpdates)) {
905 write_updates_file(
906 $GLOBALS['config']['UPDATES_FILE'],
907 $updater->getDoneUpdates()
908 );
909 }
910 }
911 catch(Exception $e) {
912 die($e->getMessage());
913 }
914
6fc14d53
A		 915 $PAGE = new pageBuilder;
916
917 // Determine which page will be rendered.
918 $query = (isset($_SERVER['QUERY_STRING'])) ? $_SERVER['QUERY_STRING'] : '';
919 $targetPage = Router::findPage($query, $_GET, isLoggedIn());
920
921 // Call plugin hooks for header, footer and includes, specifying which page will be rendered.
922 // Then assign generated data to RainTPL.
923 $common_hooks = array(
fea5db7a 924 'includes',
6fc14d53
A		 925 'header',
926 'footer',
6fc14d53
A		 927 );
928 $pluginManager = PluginManager::getInstance();
929 foreach($common_hooks as $name) {
930 $plugin_data = array();
931 $pluginManager->executeHooks('render_' . $name, $plugin_data,
932 array(
933 'target' => $targetPage,
934 'loggedin' => isLoggedIn()
935 )
936 );
937 $PAGE->assign('plugins_' . $name, $plugin_data);
938 }
939
45034273 940 // -------- Display login form.
6fc14d53 941 if ($targetPage == Router::$PAGE_LOGIN)
45034273
SS		 942 {
943 if ($GLOBALS['config']['OPEN_SHAARLI']) { header('Location: ?'); exit; } // No need to login for open Shaarli
944 $token=''; if (ban_canLogin()) $token=getToken(); // Do not waste token generation if not useful.
45034273 945 $PAGE->assign('token',$token);
5f85fcd8 946 $PAGE->assign('returnurl',(isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']):''));
45034273
SS		 947 $PAGE->renderPage('loginform');
948 exit;
949 }
950 // -------- User wants to logout.
951 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=logout'))
952 {
01e48f26 953 invalidateCaches($GLOBALS['config']['PAGECACHE']);
45034273
SS		 954 logout();
955 header('Location: ?');
956 exit;
957 }
958
959 // -------- Picture wall
6fc14d53 960 if ($targetPage == Router::$PAGE_PICWALL)
45034273 961 {
ad6c27b7 962 // Optionally filter the results:
528a6f8a 963 $links = $LINKSDB->filterSearch($_GET);
822bffce 964 $linksToDisplay = array();
45034273
SS		 965
966 // Get only links which have a thumbnail.
967 foreach($links as $link)
968 {
5f85fcd8 969 $permalink='?'.escape(smallhash($link['linkdate']));
45034273
SS		 970 $thumb=lazyThumbnail($link['url'],$permalink);
971 if ($thumb!='') // Only output links which have a thumbnail.
972 {
973 $link['thumbnail']=$thumb; // Thumbnail HTML code.
45034273
SS		 974 $linksToDisplay[]=$link; // Add to array.
975 }
976 }
f3db3774 977
6fc14d53
A		 978 $data = array(
979 'linkcount' => count($LINKSDB),
980 'linksToDisplay' => $linksToDisplay,
981 );
982 $pluginManager->executeHooks('render_picwall', $data, array('loggedin' => isLoggedIn()));
983
984 foreach ($data as $key => $value) {
985 $PAGE->assign($key, $value);
986 }
987
45034273
SS		 988 $PAGE->renderPage('picwall');
989 exit;
990 }
991
992 // -------- Tag cloud
6fc14d53 993 if ($targetPage == Router::$PAGE_TAGCLOUD)
45034273
SS		 994 {
995 $tags= $LINKSDB->allTags();
a037ac69 996
45034273
SS		 997 // We sort tags alphabetically, then choose a font size according to count.
998 // First, find max value.
f1e96a06
A		 999 $maxcount = 0;
1000 foreach ($tags as $value) {
1001 $maxcount = max($maxcount, $value);
1002 }
1003
1004 // Sort tags alphabetically: case insensitive, support locale if avalaible.
1005 uksort($tags, function($a, $b) {
1006 // Collator is part of PHP intl.
1007 if (class_exists('Collator')) {
7eb0a832
A		 1008 $c = new Collator(setlocale(LC_COLLATE, 0));
1009 if (!intl_is_failure(intl_get_error_code())) {
1010 return $c->compare($a, $b);
1011 }
f1e96a06 1012 }
7eb0a832 1013 return strcasecmp($a, $b);
f1e96a06
A		 1014 });
1015
b0128609
A		 1016 $tagList = array();
1017 foreach($tags as $key => $value) {
1018 // Tag font size scaling:
1019 // default 15 and 30 logarithm bases affect scaling,
1020 // 22 and 6 are arbitrary font sizes for max and min sizes.
1021 $size = log($value, 15) / log($maxcount, 30) * 2.2 + 0.8;
1022 $tagList[$key] = array(
1023 'count' => $value,
1024 'size' => number_format($size, 2, '.', ''),
1025 );
45034273 1026 }
6fc14d53
A		 1027
1028 $data = array(
1029 'linkcount' => count($LINKSDB),
1030 'tags' => $tagList,
1031 );
1032 $pluginManager->executeHooks('render_tagcloud', $data, array('loggedin' => isLoggedIn()));
1033
1034 foreach ($data as $key => $value) {
1035 $PAGE->assign($key, $value);
1036 }
1037
45034273 1038 $PAGE->renderPage('tagcloud');
bb8f712d 1039 exit;
45034273
SS		 1040 }
1041
38603b24
A		 1042 // Daily page.
1043 if ($targetPage == Router::$PAGE_DAILY) {
043eae70 1044 showDaily($PAGE, $LINKSDB);
38603b24
A		 1045 }
1046
82e36802
A		 1047 // ATOM and RSS feed.
1048 if ($targetPage == Router::$PAGE_FEED_ATOM || $targetPage == Router::$PAGE_FEED_RSS) {
1049 $feedType = $targetPage == Router::$PAGE_FEED_RSS ? FeedBuilder::$FEED_RSS : FeedBuilder::$FEED_ATOM;
1050 header('Content-Type: application/'. $feedType .'+xml; charset=utf-8');
1051
1052 // Cache system
1053 $query = $_SERVER['QUERY_STRING'];
1054 $cache = new CachedPage(
1055 $GLOBALS['config']['PAGECACHE'],
1056 page_url($_SERVER),
1057 startsWith($query,'do='. $targetPage) && !isLoggedIn()
1058 );
1059 $cached = $cache->cachedVersion();
5f143b72 1060 if (!empty($cached)) {
82e36802
A		 1061 echo $cached;
1062 exit;
1063 }
69c474b9 1064
82e36802
A		 1065 // Generate data.
1066 $feedGenerator = new FeedBuilder($LINKSDB, $feedType, $_SERVER, $_GET, isLoggedIn());
1067 $feedGenerator->setLocale(strtolower(setlocale(LC_COLLATE, 0)));
1068 $feedGenerator->setHideDates($GLOBALS['config']['HIDE_TIMESTAMPS'] && !isLoggedIn());
1069 $feedGenerator->setUsePermalinks(isset($_GET['permalinks']) || !$GLOBALS['config']['ENABLE_RSS_PERMALINKS']);
1070 if (!empty($GLOBALS['config']['PUBSUBHUB_URL'])) {
1071 $feedGenerator->setPubsubhubUrl($GLOBALS['config']['PUBSUBHUB_URL']);
1072 }
1073 $data = $feedGenerator->buildData();
1074
1075 // Process plugin hook.
1076 $pluginManager = PluginManager::getInstance();
1077 $pluginManager->executeHooks('render_feed', $data, array(
1078 'loggedin' => isLoggedIn(),
1079 'target' => $targetPage,
1080 ));
1081
1082 // Render the template.
1083 $PAGE->assignAll($data);
1084 $PAGE->renderPage('feed.'. $feedType);
1085 $cache->cache(ob_get_contents());
1086 ob_end_flush();
1087 exit;
e67712ba
A		 1088 }
1089
8f8113b9
A		 1090 // Display openseach plugin (XML)
1091 if ($targetPage == Router::$PAGE_OPENSEARCH) {
1092 header('Content-Type: application/xml; charset=utf-8');
1093 $PAGE->assign('serverurl', index_url($_SERVER));
1094 $PAGE->renderPage('opensearch');
1095 exit;
1096 }
1097
45034273
SS		 1098 // -------- User clicks on a tag in a link: The tag is added to the list of searched tags (searchtags=...)
1099 if (isset($_GET['addtag']))
1100 {
1101 // Get previous URL (http_referer) and add the tag to the searchtags parameters in query.
1102 if (empty($_SERVER['HTTP_REFERER'])) { header('Location: ?searchtags='.urlencode($_GET['addtag'])); exit; } // In case browser does not send HTTP_REFERER
1103 parse_str(parse_url($_SERVER['HTTP_REFERER'],PHP_URL_QUERY), $params);
732e683b 1104
775803a0
A		 1105 // Prevent redirection loop
1106 if (isset($params['addtag'])) {
1107 unset($params['addtag']);
1108 }
1109
732e683b
FE		 1110 // Check if this tag is already in the search query and ignore it if it is.
1111 // Each tag is always separated by a space
6ac95d9c
A		 1112 if (isset($params['searchtags'])) {
1113 $current_tags = explode(' ', $params['searchtags']);
1114 } else {
1115 $current_tags = array();
1116 }
732e683b
FE		 1117 $addtag = true;
1118 foreach ($current_tags as $value) {
1119 if ($value === $_GET['addtag']) {
1120 $addtag = false;
1121 break;
1122 }
1123 }
1124 // Append the tag if necessary
1125 if (empty($params['searchtags'])) {
1126 $params['searchtags'] = trim($_GET['addtag']);
1127 }
1128 else if ($addtag) {
1129 $params['searchtags'] = trim($params['searchtags']).' '.trim($_GET['addtag']);
1130 }
1131
45034273
SS		 1132 unset($params['page']); // We also remove page (keeping the same page has no sense, since the results are different)
1133 header('Location: ?'.http_build_query($params));
1134 exit;
1135 }
1136
1137 // -------- User clicks on a tag in result count: Remove the tag from the list of searched tags (searchtags=...)
775803a0 1138 if (isset($_GET['removetag'])) {
45034273 1139 // Get previous URL (http_referer) and remove the tag from the searchtags parameters in query.
775803a0
A		 1140 if (empty($_SERVER['HTTP_REFERER'])) {
1141 header('Location: ?');
1142 exit;
1143 }
1144
1145 // In case browser does not send HTTP_REFERER
1146 parse_str(parse_url($_SERVER['HTTP_REFERER'], PHP_URL_QUERY), $params);
1147
1148 // Prevent redirection loop
1149 if (isset($params['removetag'])) {
1150 unset($params['removetag']);
1151 }
1152
1153 if (isset($params['searchtags'])) {
822bffce 1154 $tags = explode(' ', $params['searchtags']);
2c75f8e7
A		 1155 // Remove value from array $tags.
1156 $tags = array_diff($tags, array($_GET['removetag']));
1157 $params['searchtags'] = implode(' ',$tags);
1158
1159 if (empty($params['searchtags'])) {
775803a0 1160 unset($params['searchtags']);
775803a0 1161 }
2c75f8e7 1162
45034273
SS		 1163 unset($params['page']); // We also remove page (keeping the same page has no sense, since the results are different)
1164 }
1165 header('Location: ?'.http_build_query($params));
1166 exit;
1167 }
1168
1169 // -------- User wants to change the number of links per page (linksperpage=...)
775803a0
A		 1170 if (isset($_GET['linksperpage'])) {
1171 if (is_numeric($_GET['linksperpage'])) {
1172 $_SESSION['LINKS_PER_PAGE']=abs(intval($_GET['linksperpage']));
1173 }
1174
1175 header('Location: '. generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('linksperpage')));
45034273
SS		 1176 exit;
1177 }
bb8f712d 1178
45034273 1179 // -------- User wants to see only private links (toggle)
775803a0
A		 1180 if (isset($_GET['privateonly'])) {
1181 if (empty($_SESSION['privateonly'])) {
1182 $_SESSION['privateonly'] = 1; // See only private links
1183 } else {
45034273
SS		 1184 unset($_SESSION['privateonly']); // See all links
1185 }
775803a0
A		 1186
1187 header('Location: '. generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('privateonly')));
45034273
SS		 1188 exit;
1189 }
1190
1191 // -------- Handle other actions allowed for non-logged in users:
1192 if (!isLoggedIn())
1193 {
ad6c27b7 1194 // User tries to post new link but is not logged in:
45034273
SS		 1195 // Show login screen, then redirect to ?post=...
1196 if (isset($_GET['post']))
1197 {
a1795ddc 1198 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($_GET['source']):'')); // Redirect to login page, then back to post link.
45034273
SS		 1199 exit;
1200 }
aedc912d
FE		 1201
1202 // Same case as above except that user tried to access ?do=addlink without being logged in
1203 // Note: passing empty parameters makes Shaarli generate default URLs and descriptions.
1204 if (isset($_GET['do']) && $_GET['do'] === 'addlink') {
1205 header('Location: ?do=login&post=');
1206 exit;
1207 }
6fc14d53 1208 showLinkList($PAGE, $LINKSDB);
5fbabbb9
A		 1209 if (isset($_GET['edit_link'])) {
1210 header('Location: ?do=login&edit_link='. escape($_GET['edit_link']));
1211 exit;
1212 }
1213
ad6c27b7 1214 exit; // Never remove this one! All operations below are reserved for logged in user.
45034273
SS		 1215 }
1216
1217 // -------- All other functions are reserved for the registered user:
1218
1219 // -------- Display the Tools menu if requested (import/export/bookmarklet...)
6fc14d53 1220 if ($targetPage == Router::$PAGE_TOOLS)
45034273 1221 {
6fc14d53
A		 1222 $data = array(
1223 'linkcount' => count($LINKSDB),
1224 'pageabsaddr' => index_url($_SERVER),
1225 );
1226 $pluginManager->executeHooks('render_tools', $data);
1227
1228 foreach ($data as $key => $value) {
1229 $PAGE->assign($key, $value);
1230 }
1231
45034273
SS		 1232 $PAGE->renderPage('tools');
1233 exit;
1234 }
1235
1236 // -------- User wants to change his/her password.
6fc14d53 1237 if ($targetPage == Router::$PAGE_CHANGEPASSWORD)
45034273
SS		 1238 {
1239 if ($GLOBALS['config']['OPEN_SHAARLI']) die('You are not supposed to change a password on an Open Shaarli.');
1240 if (!empty($_POST['setpassword']) && !empty($_POST['oldpassword']))
1241 {
ad6c27b7 1242 if (!tokenOk($_POST['token'])) die('Wrong token.'); // Go away!
45034273
SS		 1243
1244 // Make sure old password is correct.
1245 $oldhash = sha1($_POST['oldpassword'].$GLOBALS['login'].$GLOBALS['salt']);
fe16b01e 1246 if ($oldhash!=$GLOBALS['hash']) { echo '<script>alert("The old password is not correct.");document.location=\'?do=changepasswd\';</script>'; exit; }
45034273
SS		 1247 // Save new password
1248 $GLOBALS['salt'] = sha1(uniqid('',true).'_'.mt_rand()); // Salt renders rainbow-tables attacks useless.
1249 $GLOBALS['hash'] = sha1($_POST['setpassword'].$GLOBALS['login'].$GLOBALS['salt']);
dd484b90
A		 1250 try {
1251 writeConfig($GLOBALS, isLoggedIn());
1252 }
1253 catch(Exception $e) {
1254 error_log(
1255 'ERROR while writing config file after changing password.' . PHP_EOL .
1256 $e->getMessage()
1257 );
1258
1259 // TODO: do not handle exceptions/errors in JS.
1260 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do=tools\';</script>';
1261 exit;
1262 }
fe16b01e 1263 echo '<script>alert("Your password has been changed.");document.location=\'?do=tools\';</script>';
45034273
SS		 1264 exit;
1265 }
1266 else // show the change password form.
1267 {
45034273
SS		 1268 $PAGE->assign('linkcount',count($LINKSDB));
1269 $PAGE->assign('token',getToken());
1270 $PAGE->renderPage('changepassword');
1271 exit;
1272 }
1273 }
1274
1275 // -------- User wants to change configuration
6fc14d53 1276 if ($targetPage == Router::$PAGE_CONFIGURE)
45034273
SS		 1277 {
1278 if (!empty($_POST['title']) )
1279 {
12ff86c9
A		 1280 if (!tokenOk($_POST['token'])) {
1281 die('Wrong token.'); // Go away!
1282 }
45034273 1283 $tz = 'UTC';
12ff86c9
A		 1284 if (!empty($_POST['continent']) && !empty($_POST['city'])
1285 && isTimeZoneValid($_POST['continent'], $_POST['city'])
1286 ) {
1287 $tz = $_POST['continent'] . '/' . $_POST['city'];
1288 }
45034273
SS		 1289 $GLOBALS['timezone'] = $tz;
1290 $GLOBALS['title']=$_POST['title'];
ebb2880d 1291 $GLOBALS['titleLink']=$_POST['titleLink'];
45034273
SS		 1292 $GLOBALS['redirector']=$_POST['redirector'];
1293 $GLOBALS['disablesessionprotection']=!empty($_POST['disablesessionprotection']);
bb8f712d 1294 $GLOBALS['privateLinkByDefault']=!empty($_POST['privateLinkByDefault']);
ed5b38dd 1295 $GLOBALS['config']['ENABLE_RSS_PERMALINKS']= !empty($_POST['enableRssPermalinks']);
329e0768 1296 $GLOBALS['config']['ENABLE_UPDATECHECK'] = !empty($_POST['updateCheck']);
caee7ff9 1297 $GLOBALS['config']['HIDE_PUBLIC_LINKS'] = !empty($_POST['hidePublicLinks']);
dd484b90
A		 1298 try {
1299 writeConfig($GLOBALS, isLoggedIn());
1300 }
1301 catch(Exception $e) {
1302 error_log(
1303 'ERROR while writing config file after configuration update.' . PHP_EOL .
1304 $e->getMessage()
1305 );
1306
1307 // TODO: do not handle exceptions/errors in JS.
1308 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do=tools\';</script>';
1309 exit;
1310 }
fe16b01e 1311 echo '<script>alert("Configuration was saved.");document.location=\'?do=tools\';</script>';
45034273
SS		 1312 exit;
1313 }
1314 else // Show the configuration form.
1315 {
45034273
SS		 1316 $PAGE->assign('linkcount',count($LINKSDB));
1317 $PAGE->assign('token',getToken());
5f85fcd8
A		 1318 $PAGE->assign('title', empty($GLOBALS['title']) ? '' : $GLOBALS['title'] );
1319 $PAGE->assign('redirector', empty($GLOBALS['redirector']) ? '' : $GLOBALS['redirector'] );
d1e2f8e5
V		 1320 list($timezone_form, $timezone_js) = generateTimeZoneForm($GLOBALS['timezone']);
1321 $PAGE->assign('timezone_form', $timezone_form);
45034273
SS		 1322 $PAGE->assign('timezone_js',$timezone_js);
1323 $PAGE->renderPage('configure');
1324 exit;
1325 }
1326 }
1327
1328 // -------- User wants to rename a tag or delete it
6fc14d53 1329 if ($targetPage == Router::$PAGE_CHANGETAG)
45034273 1330 {
6a6aa2b9
A		 1331 if (empty($_POST['fromtag']) || (empty($_POST['totag']) && isset($_POST['renametag']))) {
1332 $PAGE->assign('linkcount', count($LINKSDB));
1333 $PAGE->assign('token', getToken());
bdd1715b 1334 $PAGE->assign('tags', $LINKSDB->allTags());
45034273
SS		 1335 $PAGE->renderPage('changetag');
1336 exit;
1337 }
6a6aa2b9
A		 1338
1339 if (!tokenOk($_POST['token'])) {
1340 die('Wrong token.');
1341 }
45034273
SS		 1342
1343 // Delete a tag:
6a6aa2b9 1344 if (isset($_POST['deletetag']) && !empty($_POST['fromtag'])) {
528a6f8a 1345 $needle = trim($_POST['fromtag']);
822bffce 1346 // True for case-sensitive tag search.
528a6f8a 1347 $linksToAlter = $LINKSDB->filterSearch(array('searchtags' => $needle), true);
45034273
SS		 1348 foreach($linksToAlter as $key=>$value)
1349 {
1350 $tags = explode(' ',trim($value['tags']));
1351 unset($tags[array_search($needle,$tags)]); // Remove tag.
1352 $value['tags']=trim(implode(' ',$tags));
1353 $LINKSDB[$key]=$value;
1354 }
2e28269b 1355 $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']);
fe16b01e 1356 echo '<script>alert("Tag was removed from '.count($linksToAlter).' links.");document.location=\'?\';</script>';
45034273
SS		 1357 exit;
1358 }
1359
1360 // Rename a tag:
6a6aa2b9 1361 if (isset($_POST['renametag']) && !empty($_POST['fromtag']) && !empty($_POST['totag'])) {
528a6f8a 1362 $needle = trim($_POST['fromtag']);
822bffce 1363 // True for case-sensitive tag search.
528a6f8a 1364 $linksToAlter = $LINKSDB->filterSearch(array('searchtags' => $needle), true);
45034273
SS		 1365 foreach($linksToAlter as $key=>$value)
1366 {
1367 $tags = explode(' ',trim($value['tags']));
ad6c27b7 1368 $tags[array_search($needle,$tags)] = trim($_POST['totag']); // Replace tags value.
45034273
SS		 1369 $value['tags']=trim(implode(' ',$tags));
1370 $LINKSDB[$key]=$value;
1371 }
01e48f26 1372 $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']); // Save to disk.
fe16b01e 1373 echo '<script>alert("Tag was renamed in '.count($linksToAlter).' links.");document.location=\'?searchtags='.urlencode($_POST['totag']).'\';</script>';
45034273
SS		 1374 exit;
1375 }
1376 }
1377
ad6c27b7 1378 // -------- User wants to add a link without using the bookmarklet: Show form.
6fc14d53 1379 if ($targetPage == Router::$PAGE_ADDLINK)
45034273 1380 {
45034273
SS		 1381 $PAGE->assign('linkcount',count($LINKSDB));
1382 $PAGE->renderPage('addlink');
1383 exit;
1384 }
1385
1386 // -------- User clicked the "Save" button when editing a link: Save link to database.
1387 if (isset($_POST['save_edit']))
1388 {
5a23950c
A		 1389 // Go away!
1390 if (! tokenOk($_POST['token'])) {
1391 die('Wrong token.');
1392 }
1393 // Remove multiple spaces.
1394 $tags = trim(preg_replace('/\s\s+/', ' ', $_POST['lf_tags']));
ce354bf1
A		 1395 // Remove first '-' char in tags.
1396 $tags = preg_replace('/(^| )\-/', '$1', $tags);
5a23950c
A		 1397 // Remove duplicates.
1398 $tags = implode(' ', array_unique(explode(' ', $tags)));
1399 $linkdate = $_POST['lf_linkdate'];
feebc6d4 1400 $url = trim($_POST['lf_url']);
5a23950c
A		 1401 if (! startsWith($url, 'http:') && ! startsWith($url, 'https:')
1402 && ! startsWith($url, 'ftp:') && ! startsWith($url, 'magnet:')
1403 && ! startsWith($url, '?') && ! startsWith($url, 'javascript:')
1404 ) {
1405 $url = 'http://' . $url;
1406 }
1407
1408 $link = array(
1409 'title' => trim($_POST['lf_title']),
1410 'url' => $url,
ed853da7 1411 'description' => $_POST['lf_description'],
5a23950c
A		 1412 'private' => (isset($_POST['lf_private']) ? 1 : 0),
1413 'linkdate' => $linkdate,
1414 'tags' => str_replace(',', ' ', $tags)
1415 );
1416 // If title is empty, use the URL as title.
1417 if ($link['title'] == '') {
1418 $link['title'] = $link['url'];
1419 }
6fc14d53
A		 1420
1421 $pluginManager->executeHooks('save_link', $link);
1422
45034273 1423 $LINKSDB[$linkdate] = $link;
5a23950c 1424 $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']);
45034273
SS		 1425 pubsubhub();
1426
1427 // If we are called from the bookmarklet, we must close the popup:
d01c2342
A		 1428 if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) {
1429 echo '<script>self.close();</script>';
1430 exit;
1431 }
1432
fd50e14c 1433 $returnurl = !empty($_POST['returnurl']) ? $_POST['returnurl'] : '?';
775803a0 1434 $location = generateLocation($returnurl, $_SERVER['HTTP_HOST'], array('addlink', 'post', 'edit_link'));
5a23950c
A		 1435 // Scroll to the link which has been edited.
1436 $location .= '#' . smallHash($_POST['lf_linkdate']);
1437 // After saving the link, redirect to the page the user was on.
1438 header('Location: '. $location);
45034273
SS		 1439 exit;
1440 }
1441
1442 // -------- User clicked the "Cancel" button when editing a link.
1443 if (isset($_POST['cancel_edit']))
1444 {
ad6c27b7 1445 // If we are called from the bookmarklet, we must close the popup:
d33c5d4c 1446 if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) { echo '<script>self.close();</script>'; exit; }
45034273 1447 $returnurl = ( isset($_POST['returnurl']) ? $_POST['returnurl'] : '?' );
b342b2a4 1448 $returnurl .= '#'.smallHash($_POST['lf_linkdate']); // Scroll to the link which has been edited.
775803a0 1449 $returnurl = generateLocation($returnurl, $_SERVER['HTTP_HOST'], array('addlink', 'post', 'edit_link'));
45034273
SS		 1450 header('Location: '.$returnurl); // After canceling, redirect to the page the user was on.
1451 exit;
1452 }
1453
ad6c27b7 1454 // -------- User clicked the "Delete" button when editing a link: Delete link from database.
45034273
SS		 1455 if (isset($_POST['delete_link']))
1456 {
1457 if (!tokenOk($_POST['token'])) die('Wrong token.');
1458 // We do not need to ask for confirmation:
ad6c27b7 1459 // - confirmation is handled by JavaScript
45034273
SS		 1460 // - we are protected from XSRF by the token.
1461 $linkdate=$_POST['lf_linkdate'];
6fc14d53
A		 1462
1463 $pluginManager->executeHooks('delete_link', $LINKSDB[$linkdate]);
1464
45034273 1465 unset($LINKSDB[$linkdate]);
01e48f26 1466 $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']); // save to disk
45034273
SS		 1467
1468 // If we are called from the bookmarklet, we must close the popup:
d33c5d4c 1469 if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) { echo '<script>self.close();</script>'; exit; }
d528433d 1470 // Pick where we're going to redirect
1471 // =============================================================
1472 // Basically, we can't redirect to where we were previously if it was a permalink
1473 // or an edit_link, because it would 404.
1474 // Cases:
1475 // - / : nothing in $_GET, redirect to self
1476 // - /?page : redirect to self
d33c5d4c 1477 // - /?searchterm : redirect to self (there might be other links)
d528433d 1478 // - /?searchtags : redirect to self
1479 // - /permalink : redirect to / (the link does not exist anymore)
1480 // - /?edit_link : redirect to / (the link does not exist anymore)
1481 // PHP treats the permalink as a $_GET variable, so we need to check if every condition for self
1482 // redirect is not satisfied, and only then redirect to /
1483 $location = "?";
1484 // Self redirection
775803a0
A		 1485 if (count($_GET) == 0
1486 || isset($_GET['page'])
1487 || isset($_GET['searchterm'])
1488 || isset($_GET['searchtags'])
1489 ) {
d528433d 1490 if (isset($_POST['returnurl'])) {
1491 $location = $_POST['returnurl']; // Handle redirects given by the form
775803a0
A		 1492 } else {
1493 $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('delete_link'));
d528433d 1494 }
1495 }
1496
1497 header('Location: ' . $location); // After deleting the link, redirect to appropriate location
45034273
SS		 1498 exit;
1499 }
1500
1501 // -------- User clicked the "EDIT" button on a link: Display link edit form.
1502 if (isset($_GET['edit_link']))
1503 {
1504 $link = $LINKSDB[$_GET['edit_link']]; // Read database
1505 if (!$link) { header('Location: ?'); exit; } // Link not found in database.
6fc14d53
A		 1506 $data = array(
1507 'linkcount' => count($LINKSDB),
1508 'link' => $link,
1509 'link_is_new' => false,
1510 'token' => getToken(),
1511 'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
1512 'tags' => $LINKSDB->allTags(),
1513 );
1514 $pluginManager->executeHooks('render_editlink', $data);
1515
1516 foreach ($data as $key => $value) {
1517 $PAGE->assign($key, $value);
1518 }
1519
45034273
SS		 1520 $PAGE->renderPage('editlink');
1521 exit;
1522 }
1523
1524 // -------- User want to post a new link: Display link edit form.
d9d776af 1525 if (isset($_GET['post'])) {
ce7b0b64 1526 $url = cleanup_url($_GET['post']);
45034273
SS		 1527
1528 $link_is_new = false;
9e1724f1 1529 // Check if URL is not already in database (in this case, we will edit the existing link)
ef591e7e 1530 $link = $LINKSDB->getLinkFromUrl($url);
45034273
SS		 1531 if (!$link)
1532 {
9e1724f1 1533 $link_is_new = true;
45034273 1534 $linkdate = strval(date('Ymd_His'));
9e1724f1 1535 // Get title if it was provided in URL (by the bookmarklet).
739dc243 1536 $title = empty($_GET['title']) ? '' : escape($_GET['title']);
9e1724f1 1537 // Get description if it was provided in URL (by the bookmarklet). [Bronco added that]
739dc243
A		 1538 $description = empty($_GET['description']) ? '' : escape($_GET['description']);
1539 $tags = empty($_GET['tags']) ? '' : escape($_GET['tags']);
1540 $private = !empty($_GET['private']) && $_GET['private'] === "1" ? 1 : 0;
26c50346 1541 // If this is an HTTP(S) link, we try go get the page to extract the title (otherwise we will to straight to the edit form.)
ef591e7e 1542 if (empty($title) && strpos(get_url_scheme($url), 'http') !== false) {
451314eb 1543 // Short timeout to keep the application responsive
1557cefb 1544 list($headers, $content) = get_http_response($url, 4);
451314eb 1545 if (strpos($headers[0], '200 OK') !== false) {
1557cefb
A		 1546 // Retrieve charset.
1547 $charset = get_charset($headers, $content);
1548 // Extract title.
1549 $title = html_extract_title($content);
1550 // Re-encode title in utf-8 if necessary.
ce7b0b64
A		 1551 if (! empty($title) && strtolower($charset) != 'utf-8') {
1552 $title = mb_convert_encoding($title, 'utf-8', $charset);
9e1724f1
A		 1553 }
1554 }
45034273 1555 }
1557cefb 1556
9e1724f1
A		 1557 if ($url == '') {
1558 $url = '?' . smallHash($linkdate);
1559 $title = 'Note: ';
27646ca5 1560 }
ce7b0b64
A		 1561 $url = escape($url);
1562 $title = escape($title);
1557cefb 1563
9e1724f1
A		 1564 $link = array(
1565 'linkdate' => $linkdate,
1566 'title' => $title,
ef591e7e 1567 'url' => $url,
9e1724f1
A		 1568 'description' => $description,
1569 'tags' => $tags,
1570 'private' => $private
1571 );
45034273
SS		 1572 }
1573
6fc14d53
A		 1574 $data = array(
1575 'linkcount' => count($LINKSDB),
1576 'link' => $link,
1577 'link_is_new' => $link_is_new,
1578 'token' => getToken(), // XSRF protection.
1579 'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
1580 'source' => (isset($_GET['source']) ? $_GET['source'] : ''),
1581 'tags' => $LINKSDB->allTags(),
1582 );
1583 $pluginManager->executeHooks('render_editlink', $data);
1584
1585 foreach ($data as $key => $value) {
1586 $PAGE->assign($key, $value);
1587 }
1588
45034273
SS		 1589 $PAGE->renderPage('editlink');
1590 exit;
1591 }
1592
1593 // -------- Export as Netscape Bookmarks HTML file.
cd5327be
V		 1594 if ($targetPage == Router::$PAGE_EXPORT) {
1595 if (empty($_GET['selection'])) {
45034273
SS		 1596 $PAGE->assign('linkcount',count($LINKSDB));
1597 $PAGE->renderPage('export');
1598 exit;
1599 }
45034273 1600
cd5327be
V		 1601 // export as bookmarks_(all|private|public)_YYYYmmdd_HHMMSS.html
1602 $selection = $_GET['selection'];
1603 try {
1604 $PAGE->assign(
1605 'links',
1606 NetscapeBookmarkUtils::filterAndFormat($LINKSDB, $selection)
1607 );
1608 } catch (Exception $exc) {
1609 header('Content-Type: text/plain; charset=utf-8');
1610 echo $exc->getMessage();
1611 exit;
45034273 1612 }
cd5327be
V		 1613 $now = new DateTime();
1614 header('Content-Type: text/html; charset=utf-8');
1615 header(
1616 'Content-disposition: attachment; filename=bookmarks_'
1617 .$selection.'_'.$now->format(LinkDB::LINK_DATE_FORMAT).'.html'
1618 );
1619 $PAGE->assign('date', $now->format(DateTime::RFC822));
1620 $PAGE->assign('eol', PHP_EOL);
1621 $PAGE->assign('selection', $selection);
1622 $PAGE->renderPage('export.bookmarks');
1623 exit;
45034273
SS		 1624 }
1625
1626 // -------- User is uploading a file for import
1627 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=upload'))
1628 {
1629 // If file is too big, some form field may be missing.
1630 if (!isset($_POST['token']) || (!isset($_FILES)) || (isset($_FILES['filetoupload']['size']) && $_FILES['filetoupload']['size']==0))
1631 {
1632 $returnurl = ( empty($_SERVER['HTTP_REFERER']) ? '?' : $_SERVER['HTTP_REFERER'] );
5f85fcd8 1633 echo '<script>alert("The file you are trying to upload is probably bigger than what this webserver can accept ('.getMaxFileSize().' bytes). Please upload in smaller chunks.");document.location=\''.escape($returnurl).'\';</script>';
45034273
SS		 1634 exit;
1635 }
1636 if (!tokenOk($_POST['token'])) die('Wrong token.');
043eae70 1637 importFile($LINKSDB);
45034273
SS		 1638 exit;
1639 }
1640
1641 // -------- Show upload/import dialog:
6fc14d53 1642 if ($targetPage == Router::$PAGE_IMPORT)
45034273 1643 {
45034273
SS		 1644 $PAGE->assign('linkcount',count($LINKSDB));
1645 $PAGE->assign('token',getToken());
1646 $PAGE->assign('maxfilesize',getMaxFileSize());
1647 $PAGE->renderPage('import');
1648 exit;
1649 }
1650
dea0ba28
A		 1651 // Plugin administration page
1652 if ($targetPage == Router::$PAGE_PLUGINSADMIN) {
1653 $pluginMeta = $pluginManager->getPluginsMeta();
1654
1655 // Split plugins into 2 arrays: ordered enabled plugins and disabled.
1656 $enabledPlugins = array_filter($pluginMeta, function($v) { return $v['order'] !== false; });
1657 // Load parameters.
1658 $enabledPlugins = load_plugin_parameter_values($enabledPlugins, $GLOBALS['plugins']);
1659 uasort(
1660 $enabledPlugins,
1661 function($a, $b) { return $a['order'] - $b['order']; }
1662 );
1663 $disabledPlugins = array_filter($pluginMeta, function($v) { return $v['order'] === false; });
1664
1665 $PAGE->assign('enabledPlugins', $enabledPlugins);
1666 $PAGE->assign('disabledPlugins', $disabledPlugins);
1667 $PAGE->renderPage('pluginsadmin');
1668 exit;
1669 }
1670
1671 // Plugin administration form action
1672 if ($targetPage == Router::$PAGE_SAVE_PLUGINSADMIN) {
1673 try {
1674 if (isset($_POST['parameters_form'])) {
1675 unset($_POST['parameters_form']);
1676 foreach ($_POST as $param => $value) {
1677 $GLOBALS['plugins'][$param] = escape($value);
1678 }
1679 }
1680 else {
1681 $GLOBALS['config']['ENABLED_PLUGINS'] = save_plugin_config($_POST);
1682 }
1683 writeConfig($GLOBALS, isLoggedIn());
1684 }
1685 catch (Exception $e) {
1686 error_log(
1687 'ERROR while saving plugin configuration:.' . PHP_EOL .
1688 $e->getMessage()
1689 );
1690
1691 // TODO: do not handle exceptions/errors in JS.
59edea42 1692 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do='. Router::$PAGE_PLUGINSADMIN .'\';</script>';
dea0ba28
A		 1693 exit;
1694 }
1695 header('Location: ?do='. Router::$PAGE_PLUGINSADMIN);
1696 exit;
1697 }
1698
45034273 1699 // -------- Otherwise, simply display search form and links:
6fc14d53 1700 showLinkList($PAGE, $LINKSDB);
45034273
SS		 1701 exit;
1702}
1703
1704// -----------------------------------------------------------------------------------------------
1705// Process the import file form.
043eae70 1706function importFile($LINKSDB)
45034273 1707{
02ad8fb6 1708 if (!isLoggedIn()) { die('Not allowed.'); }
043eae70 1709
45034273
SS		 1710 $filename=$_FILES['filetoupload']['name'];
1711 $filesize=$_FILES['filetoupload']['size'];
1712 $data=file_get_contents($_FILES['filetoupload']['tmp_name']);
ad6c27b7 1713 $private = (empty($_POST['private']) ? 0 : 1); // Should the links be imported as private?
1714 $overwrite = !empty($_POST['overwrite']) ; // Should the imported links overwrite existing ones?
45034273
SS		 1715 $import_count=0;
1716
1717 // Sniff file type:
1718 $type='unknown';
1719 if (startsWith($data,'<!DOCTYPE NETSCAPE-Bookmark-file-1>')) $type='netscape'; // Netscape bookmark file (aka Firefox).
1720
1721 // Then import the bookmarks.
1722 if ($type=='netscape')
1723 {
1724 // This is a standard Netscape-style bookmark file.
ad6c27b7 1725 // This format is supported by all browsers (except IE, of course), also Delicious, Diigo and others.
45034273
SS		 1726 foreach(explode('<DT>',$data) as $html) // explode is very fast
1727 {
1728 $link = array('linkdate'=>'','title'=>'','url'=>'','description'=>'','tags'=>'','private'=>0);
1729 $d = explode('<DD>',$html);
1730 if (startswith($d[0],'<A '))
1731 {
1732 $link['description'] = (isset($d[1]) ? html_entity_decode(trim($d[1]),ENT_QUOTES,'UTF-8') : ''); // Get description (optional)
1733 preg_match('!<A .*?>(.*?)</A>!i',$d[0],$matches); $link['title'] = (isset($matches[1]) ? trim($matches[1]) : ''); // Get title
1734 $link['title'] = html_entity_decode($link['title'],ENT_QUOTES,'UTF-8');
1735 preg_match_all('! ([A-Z_]+)=\"(.*?)"!i',$html,$matches,PREG_SET_ORDER); // Get all other attributes
1736 $raw_add_date=0;
1737 foreach($matches as $m)
1738 {
1739 $attr=$m[1]; $value=$m[2];
1740 if ($attr=='HREF') $link['url']=html_entity_decode($value,ENT_QUOTES,'UTF-8');
fc93ae1d
AA		 1741 elseif ($attr=='ADD_DATE')
1742 {
1743 $raw_add_date=intval($value);
1744 if ($raw_add_date>30000000000) $raw_add_date/=1000; //If larger than year 2920, then was likely stored in milliseconds instead of seconds
1745 }
45034273
SS		 1746 elseif ($attr=='PRIVATE') $link['private']=($value=='0'?0:1);
1747 elseif ($attr=='TAGS') $link['tags']=html_entity_decode(str_replace(',',' ',$value),ENT_QUOTES,'UTF-8');
1748 }
1749 if ($link['url']!='')
1750 {
1751 if ($private==1) $link['private']=1;
1752 $dblink = $LINKSDB->getLinkFromUrl($link['url']); // See if the link is already in database.
1753 if ($dblink==false)
1754 { // Link not in database, let's import it...
1755 if (empty($raw_add_date)) $raw_add_date=time(); // In case of shitty bookmark file with no ADD_DATE
1756
1757 // Make sure date/time is not already used by another link.
1758 // (Some bookmark files have several different links with the same ADD_DATE)
ad6c27b7 1759 // We increment date by 1 second until we find a date which is not used in DB.
45034273
SS		 1760 // (so that links that have the same date/time are more or less kept grouped by date, but do not conflict.)
1761 while (!empty($LINKSDB[date('Ymd_His',$raw_add_date)])) { $raw_add_date++; }// Yes, I know it's ugly.
1762 $link['linkdate']=date('Ymd_His',$raw_add_date);
1763 $LINKSDB[$link['linkdate']] = $link;
1764 $import_count++;
1765 }
ad6c27b7 1766 else // Link already present in database.
45034273
SS		 1767 {
1768 if ($overwrite)
1769 { // If overwrite is required, we import link data, except date/time.
1770 $link['linkdate']=$dblink['linkdate'];
1771 $LINKSDB[$link['linkdate']] = $link;
1772 $import_count++;
1773 }
1774 }
1775
1776 }
1777 }
1778 }
01e48f26 1779 $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']);
45034273 1780
fe16b01e 1781 echo '<script>alert("File '.json_encode($filename).' ('.$filesize.' bytes) was successfully processed: '.$import_count.' links imported.");document.location=\'?\';</script>';
45034273
SS		 1782 }
1783 else
1784 {
fe16b01e 1785 echo '<script>alert("File '.json_encode($filename).' ('.$filesize.' bytes) has an unknown file format. Nothing was imported.");document.location=\'?\';</script>';
45034273
SS		 1786 }
1787}
1788
528a6f8a
A		 1789/**
1790 * Template for the list of links (<div id="linklist">)
1791 * This function fills all the necessary fields in the $PAGE for the template 'linklist.html'
1792 *
1793 * @param pageBuilder $PAGE pageBuilder instance.
1794 * @param LinkDB $LINKSDB LinkDB instance.
1795 */
45034273
SS		 1796function buildLinkList($PAGE,$LINKSDB)
1797{
528a6f8a 1798 // Used in templates
c51fae92 1799 $searchtags = !empty($_GET['searchtags']) ? escape($_GET['searchtags']) : '';
528a6f8a 1800 $searchterm = !empty($_GET['searchterm']) ? escape($_GET['searchterm']) : '';
822bffce 1801
528a6f8a
A		 1802 // Smallhash filter
1803 if (! empty($_SERVER['QUERY_STRING'])
1804 && preg_match('/^[a-zA-Z0-9-_@]{6}($|&|#)/', $_SERVER['QUERY_STRING'])) {
1805 try {
1806 $linksToDisplay = $LINKSDB->filterHash($_SERVER['QUERY_STRING']);
1807 } catch (LinkNotFoundException $e) {
1808 $PAGE->render404($e->getMessage());
45034273
SS		 1809 exit;
1810 }
528a6f8a
A		 1811 } else {
1812 // Filter links according search parameters.
1813 $privateonly = !empty($_SESSION['privateonly']);
1814 $linksToDisplay = $LINKSDB->filterSearch($_GET, false, $privateonly);
45034273
SS		 1815 }
1816
1817 // ---- Handle paging.
822bffce
A		 1818 $keys = array();
1819 foreach ($linksToDisplay as $key => $value) {
1820 $keys[] = $key;
1821 }
45034273
SS		 1822
1823 // If there is only a single link, we change on-the-fly the title of the page.
822bffce
A		 1824 if (count($linksToDisplay) == 1) {
1825 $GLOBALS['pagetitle'] = $linksToDisplay[$keys[0]]['title'].' - '.$GLOBALS['title'];
1826 }
45034273
SS		 1827
1828 // Select articles according to paging.
822bffce
A		 1829 $pagecount = ceil(count($keys) / $_SESSION['LINKS_PER_PAGE']);
1830 $pagecount = $pagecount == 0 ? 1 : $pagecount;
1831 $page= empty($_GET['page']) ? 1 : intval($_GET['page']);
1832 $page = $page < 1 ? 1 : $page;
1833 $page = $page > $pagecount ? $pagecount : $page;
1834 // Start index.
1835 $i = ($page-1) * $_SESSION['LINKS_PER_PAGE'];
1836 $end = $i + $_SESSION['LINKS_PER_PAGE'];
1837 $linkDisp = array();
45034273
SS		 1838 while ($i<$end && $i<count($keys))
1839 {
1840 $link = $linksToDisplay[$keys[$i]];
90e5bd65 1841 $link['description'] = format_description($link['description'], $GLOBALS['redirector']);
822bffce
A		 1842 $classLi = ($i % 2) != 0 ? '' : 'publicLinkHightLight';
1843 $link['class'] = $link['private'] == 0 ? $classLi : 'private';
205a4277
V		 1844 $date = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $link['linkdate']);
1845 $link['timestamp'] = $date->getTimestamp();
822bffce 1846 $taglist = explode(' ', $link['tags']);
a5752e77 1847 uasort($taglist, 'strcasecmp');
822bffce 1848 $link['taglist'] = $taglist;
6fc14d53 1849 $link['shorturl'] = smallHash($link['linkdate']);
822bffce
A		 1850 // Check for both signs of a note: starting with ? and 7 chars long.
1851 if ($link['url'][0] === '?' &&
1852 strlen($link['url']) === 7) {
1853 $link['url'] = index_url($_SERVER) . $link['url'];
b47f515a 1854 }
d33c5d4c 1855
45034273
SS		 1856 $linkDisp[$keys[$i]] = $link;
1857 $i++;
1858 }
bb8f712d 1859
45034273 1860 // Compute paging navigation
c51fae92
A		 1861 $searchtagsUrl = empty($searchtags) ? '' : '&searchtags=' . urlencode($searchtags);
1862 $searchtermUrl = empty($searchterm) ? '' : '&searchterm=' . urlencode($searchterm);
822bffce
A		 1863 $previous_page_url = '';
1864 if ($i != count($keys)) {
c51fae92 1865 $previous_page_url = '?page=' . ($page+1) . $searchtermUrl . $searchtagsUrl;
822bffce
A		 1866 }
1867 $next_page_url='';
1868 if ($page>1) {
c51fae92 1869 $next_page_url = '?page=' . ($page-1) . $searchtermUrl . $searchtagsUrl;
822bffce 1870 }
45034273 1871
c51fae92 1872 $token = isLoggedIn() ? getToken() : '';
bb8f712d 1873
45034273 1874 // Fill all template fields.
6fc14d53
A		 1875 $data = array(
1876 'linkcount' => count($LINKSDB),
1877 'previous_page_url' => $previous_page_url,
1878 'next_page_url' => $next_page_url,
1879 'page_current' => $page,
1880 'page_max' => $pagecount,
1881 'result_count' => count($linksToDisplay),
c51fae92
A		 1882 'search_term' => $searchterm,
1883 'search_tags' => $searchtags,
6fc14d53
A		 1884 'redirector' => empty($GLOBALS['redirector']) ? '' : $GLOBALS['redirector'], // Optional redirector URL.
1885 'token' => $token,
1886 'links' => $linkDisp,
1887 'tags' => $LINKSDB->allTags(),
1888 );
18cca483
A		 1889 // FIXME! temporary fix - see #399.
1890 if (!empty($GLOBALS['pagetitle']) && count($linkDisp) == 1) {
1891 $data['pagetitle'] = $GLOBALS['pagetitle'];
1892 }
6fc14d53
A		 1893
1894 $pluginManager = PluginManager::getInstance();
1895 $pluginManager->executeHooks('render_linklist', $data, array('loggedin' => isLoggedIn()));
1896
1897 foreach ($data as $key => $value) {
1898 $PAGE->assign($key, $value);
1899 }
1900
45034273
SS		 1901 return;
1902}
1903
1904// Compute the thumbnail for a link.
bb8f712d 1905//
ad6c27b7 1906// With a link to the original URL.
45034273 1907// Understands various services (youtube.com...)
ad6c27b7 1908// Input: $url = URL for which the thumbnail must be found.
45034273
SS		 1909// $href = if provided, this URL will be followed instead of $url
1910// Returns an associative array with thumbnail attributes (src,href,width,height,style,alt)
1911// Some of them may be missing.
1912// Return an empty array if no thumbnail available.
1913function computeThumbnail($url,$href=false)
1914{
1915 if (!$GLOBALS['config']['ENABLE_THUMBNAILS']) return array();
1916 if ($href==false) $href=$url;
1917
1918 // For most hosts, the URL of the thumbnail can be easily deduced from the URL of the link.
ad6c27b7 1919 // (e.g. http://www.youtube.com/watch?v=spVypYk4kto ---> http://img.youtube.com/vi/spVypYk4kto/default.jpg )
45034273
SS		 1920 // ^^^^^^^^^^^ ^^^^^^^^^^^
1921 $domain = parse_url($url,PHP_URL_HOST);
1922 if ($domain=='youtube.com' || $domain=='www.youtube.com')
1923 {
1924 parse_str(parse_url($url,PHP_URL_QUERY), $params); // Extract video ID and get thumbnail
1a663a0f 1925 if (!empty($params['v'])) return array('src'=>'https://img.youtube.com/vi/'.$params['v'].'/default.jpg',
45034273
SS		 1926 'href'=>$href,'width'=>'120','height'=>'90','alt'=>'YouTube thumbnail');
1927 }
1928 if ($domain=='youtu.be') // Youtube short links
1929 {
1930 $path = parse_url($url,PHP_URL_PATH);
1a663a0f 1931 return array('src'=>'https://img.youtube.com/vi'.$path.'/default.jpg',
bb8f712d 1932 'href'=>$href,'width'=>'120','height'=>'90','alt'=>'YouTube thumbnail');
45034273
SS		 1933 }
1934 if ($domain=='pix.toile-libre.org') // pix.toile-libre.org image hosting
1935 {
1936 parse_str(parse_url($url,PHP_URL_QUERY), $params); // Extract image filename.
1937 if (!empty($params) && !empty($params['img'])) return array('src'=>'http://pix.toile-libre.org/upload/thumb/'.urlencode($params['img']),
bb8f712d
KT		 1938 'href'=>$href,'style'=>'max-width:120px; max-height:150px','alt'=>'pix.toile-libre.org thumbnail');
1939 }
1940
45034273
SS		 1941 if ($domain=='imgur.com')
1942 {
1943 $path = parse_url($url,PHP_URL_PATH);
1944 if (startsWith($path,'/a/')) return array(); // Thumbnails for albums are not available.
1a663a0f 1945 if (startsWith($path,'/r/')) return array('src'=>'https://i.imgur.com/'.basename($path).'s.jpg',
45034273 1946 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
1a663a0f 1947 if (startsWith($path,'/gallery/')) return array('src'=>'https://i.imgur.com'.substr($path,8).'s.jpg',
45034273
SS		 1948 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
1949
1a663a0f 1950 if (substr_count($path,'/')==1) return array('src'=>'https://i.imgur.com/'.substr($path,1).'s.jpg',
45034273
SS		 1951 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
1952 }
1953 if ($domain=='i.imgur.com')
1954 {
1955 $pi = pathinfo(parse_url($url,PHP_URL_PATH));
1a663a0f 1956 if (!empty($pi['filename'])) return array('src'=>'https://i.imgur.com/'.$pi['filename'].'s.jpg',
45034273
SS		 1957 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
1958 }
1959 if ($domain=='dailymotion.com' || $domain=='www.dailymotion.com')
1960 {
1961 if (strpos($url,'dailymotion.com/video/')!==false)
1962 {
1963 $thumburl=str_replace('dailymotion.com/video/','dailymotion.com/thumbnail/video/',$url);
1964 return array('src'=>$thumburl,
1965 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'DailyMotion thumbnail');
1966 }
1967 }
1968 if (endsWith($domain,'.imageshack.us'))
1969 {
1970 $ext=strtolower(pathinfo($url,PATHINFO_EXTENSION));
1971 if ($ext=='jpg' || $ext=='jpeg' || $ext=='png' || $ext=='gif')
1972 {
1973 $thumburl = substr($url,0,strlen($url)-strlen($ext)).'th.'.$ext;
1974 return array('src'=>$thumburl,
1975 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'imageshack.us thumbnail');
1976 }
1977 }
1978
1979 // Some other hosts are SLOW AS HELL and usually require an extra HTTP request to get the thumbnail URL.
1980 // So we deport the thumbnail generation in order not to slow down page generation
1981 // (and we also cache the thumbnail)
1982
1983 if (!$GLOBALS['config']['ENABLE_LOCALCACHE']) return array(); // If local cache is disabled, no thumbnails for services which require the use a local cache.
1984
1985 if ($domain=='flickr.com' || endsWith($domain,'.flickr.com')
1986 || $domain=='vimeo.com'
1987 || $domain=='ted.com' || endsWith($domain,'.ted.com')
1988 || $domain=='xkcd.com' || endsWith($domain,'.xkcd.com')
1989 )
1990 {
1991 if ($domain=='vimeo.com')
ad6c27b7 1992 { // Make sure this vimeo URL points to a video (/xxx... where xxx is numeric)
45034273
SS		 1993 $path = parse_url($url,PHP_URL_PATH);
1994 if (!preg_match('!/\d+.+?!',$path)) return array(); // This is not a single video URL.
1995 }
1996 if ($domain=='xkcd.com' || endsWith($domain,'.xkcd.com'))
ad6c27b7 1997 { // Make sure this URL points to a single comic (/xxx... where xxx is numeric)
45034273
SS		 1998 $path = parse_url($url,PHP_URL_PATH);
1999 if (!preg_match('!/\d+.+?!',$path)) return array();
2000 }
2001 if ($domain=='ted.com' || endsWith($domain,'.ted.com'))
ad6c27b7 2002 { // Make sure this TED URL points to a video (/talks/...)
45034273
SS		 2003 $path = parse_url($url,PHP_URL_PATH);
2004 if ("/talks/" !== substr($path,0,7)) return array(); // This is not a single video URL.
2005 }
2006 $sign = hash_hmac('sha256', $url, $GLOBALS['salt']); // We use the salt to sign data (it's random, secret, and specific to each installation)
482d67bd 2007 return array('src'=>index_url($_SERVER).'?do=genthumbnail&hmac='.$sign.'&url='.urlencode($url),
45034273
SS		 2008 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'thumbnail');
2009 }
2010
2011 // For all other, we try to make a thumbnail of links ending with .jpg/jpeg/png/gif
2012 // Technically speaking, we should download ALL links and check their Content-Type to see if they are images.
2013 // But using the extension will do.
2014 $ext=strtolower(pathinfo($url,PATHINFO_EXTENSION));
2015 if ($ext=='jpg' || $ext=='jpeg' || $ext=='png' || $ext=='gif')
2016 {
2017 $sign = hash_hmac('sha256', $url, $GLOBALS['salt']); // We use the salt to sign data (it's random, secret, and specific to each installation)
482d67bd 2018 return array('src'=>index_url($_SERVER).'?do=genthumbnail&hmac='.$sign.'&url='.urlencode($url),
bb8f712d 2019 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'thumbnail');
45034273
SS		 2020 }
2021 return array(); // No thumbnail.
2022
2023}
2024
2025
2026// Returns the HTML code to display a thumbnail for a link
2027// with a link to the original URL.
2028// Understands various services (youtube.com...)
ad6c27b7 2029// Input: $url = URL for which the thumbnail must be found.
45034273
SS		 2030// $href = if provided, this URL will be followed instead of $url
2031// Returns '' if no thumbnail available.
2032function thumbnail($url,$href=false)
2033{
2034 $t = computeThumbnail($url,$href);
2035 if (count($t)==0) return ''; // Empty array = no thumbnail for this URL.
bb8f712d 2036
5f85fcd8
A		 2037 $html='<a href="'.escape($t['href']).'"><img src="'.escape($t['src']).'"';
2038 if (!empty($t['width'])) $html.=' width="'.escape($t['width']).'"';
2039 if (!empty($t['height'])) $html.=' height="'.escape($t['height']).'"';
2040 if (!empty($t['style'])) $html.=' style="'.escape($t['style']).'"';
2041 if (!empty($t['alt'])) $html.=' alt="'.escape($t['alt']).'"';
45034273
SS		 2042 $html.='></a>';
2043 return $html;
2044}
2045
45034273
SS		 2046// Returns the HTML code to display a thumbnail for a link
2047// for the picture wall (using lazy image loading)
2048// Understands various services (youtube.com...)
ad6c27b7 2049// Input: $url = URL for which the thumbnail must be found.
45034273
SS		 2050// $href = if provided, this URL will be followed instead of $url
2051// Returns '' if no thumbnail available.
2052function lazyThumbnail($url,$href=false)
2053{
bb8f712d 2054 $t = computeThumbnail($url,$href);
45034273
SS		 2055 if (count($t)==0) return ''; // Empty array = no thumbnail for this URL.
2056
5f85fcd8 2057 $html='<a href="'.escape($t['href']).'">';
bb8f712d 2058
34047d23 2059 // Lazy image
5f85fcd8 2060 $html.='<img class="b-lazy" src="#" data-src="'.escape($t['src']).'"';
858c5c2b 2061
5f85fcd8
A		 2062 if (!empty($t['width'])) $html.=' width="'.escape($t['width']).'"';
2063 if (!empty($t['height'])) $html.=' height="'.escape($t['height']).'"';
2064 if (!empty($t['style'])) $html.=' style="'.escape($t['style']).'"';
2065 if (!empty($t['alt'])) $html.=' alt="'.escape($t['alt']).'"';
45034273 2066 $html.='>';
bb8f712d 2067
ad6c27b7 2068 // No-JavaScript fallback.
5f85fcd8
A		 2069 $html.='<noscript><img src="'.escape($t['src']).'"';
2070 if (!empty($t['width'])) $html.=' width="'.escape($t['width']).'"';
2071 if (!empty($t['height'])) $html.=' height="'.escape($t['height']).'"';
2072 if (!empty($t['style'])) $html.=' style="'.escape($t['style']).'"';
2073 if (!empty($t['alt'])) $html.=' alt="'.escape($t['alt']).'"';
45034273 2074 $html.='></noscript></a>';
bb8f712d 2075
45034273
SS		 2076 return $html;
2077}
2078
2079
2080// -----------------------------------------------------------------------------------------------
2081// Installation
2082// This function should NEVER be called if the file data/config.php exists.
2083function install()
2084{
2085 // On free.fr host, make sure the /sessions directory exists, otherwise login will not work.
f6a6ca0a 2086 if (endsWith($_SERVER['HTTP_HOST'],'.free.fr') && !is_dir($_SERVER['DOCUMENT_ROOT'].'/sessions')) mkdir($_SERVER['DOCUMENT_ROOT'].'/sessions',0705);
45034273 2087
f37664a2
SS		 2088
2089 // This part makes sure sessions works correctly.
2090 // (Because on some hosts, session.save_path may not be set correctly,
2091 // or we may not have write access to it.)
2092 if (isset($_GET['test_session']) && ( !isset($_SESSION) || !isset($_SESSION['session_tested']) || $_SESSION['session_tested']!='Working'))
2093 { // Step 2: Check if data in session is correct.
2094 echo '<pre>Sessions do not seem to work correctly on your server.<br>';
2095 echo 'Make sure the variable session.save_path is set correctly in your php config, and that you have write access to it.<br>';
01ec1791 2096 echo 'It currently points to '.session_save_path().'<br>';
2097 echo 'Check that the hostname used to access Shaarli contains a dot. On some browsers, accessing your server via a hostname like \'localhost\' or any custom hostname without a dot causes cookie storage to fail. We recommend accessing your server via it\'s IP address or Fully Qualified Domain Name.<br>';
2098 echo '<br><a href="?">Click to try again.</a></pre>';
f37664a2
SS		 2099 die;
2100 }
2101 if (!isset($_SESSION['session_tested']))
2102 { // Step 1 : Try to store data in session and reload page.
2103 $_SESSION['session_tested'] = 'Working'; // Try to set a variable in session.
482d67bd 2104 header('Location: '.index_url($_SERVER).'?test_session'); // Redirect to check stored data.
f37664a2
SS		 2105 }
2106 if (isset($_GET['test_session']))
ad6c27b7 2107 { // Step 3: Sessions are OK. Remove test parameter from URL.
482d67bd 2108 header('Location: '.index_url($_SERVER));
f37664a2
SS		 2109 }
2110
2111
45034273
SS		 2112 if (!empty($_POST['setlogin']) && !empty($_POST['setpassword']))
2113 {
2114 $tz = 'UTC';
12ff86c9
A		 2115 if (!empty($_POST['continent']) && !empty($_POST['city'])
2116 && isTimeZoneValid($_POST['continent'], $_POST['city'])
2117 ) {
2118 $tz = $_POST['continent'].'/'.$_POST['city'];
d1e2f8e5 2119 }
45034273
SS		 2120 $GLOBALS['timezone'] = $tz;
2121 // Everything is ok, let's create config file.
2122 $GLOBALS['login'] = $_POST['setlogin'];
2123 $GLOBALS['salt'] = sha1(uniqid('',true).'_'.mt_rand()); // Salt renders rainbow-tables attacks useless.
2124 $GLOBALS['hash'] = sha1($_POST['setpassword'].$GLOBALS['login'].$GLOBALS['salt']);
482d67bd 2125 $GLOBALS['title'] = (empty($_POST['title']) ? 'Shared links on '.escape(index_url($_SERVER)) : $_POST['title'] );
329e0768 2126 $GLOBALS['config']['ENABLE_UPDATECHECK'] = !empty($_POST['updateCheck']);
dd484b90
A		 2127 try {
2128 writeConfig($GLOBALS, isLoggedIn());
2129 }
2130 catch(Exception $e) {
2131 error_log(
2132 'ERROR while writing config file after installation.' . PHP_EOL .
2133 $e->getMessage()
2134 );
2135
2136 // TODO: do not handle exceptions/errors in JS.
2137 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?\';</script>';
2138 exit;
2139 }
fe16b01e 2140 echo '<script>alert("Shaarli is now configured. Please enter your login/password and start shaaring your links!");document.location=\'?do=login\';</script>';
45034273
SS		 2141 exit;
2142 }
2143
2144 // Display config form:
d1e2f8e5
V		 2145 list($timezone_form, $timezone_js) = generateTimeZoneForm();
2146 $timezone_html = '';
2147 if ($timezone_form != '') {
2148 $timezone_html = '<tr><td><b>Timezone:</b></td><td>'.$timezone_form.'</td></tr>';
2149 }
bb8f712d 2150
45034273
SS		 2151 $PAGE = new pageBuilder;
2152 $PAGE->assign('timezone_html',$timezone_html);
2153 $PAGE->assign('timezone_js',$timezone_js);
2154 $PAGE->renderPage('install');
2155 exit;
2156}
2157
ad6c27b7 2158/* Because some f*cking services like flickr require an extra HTTP request to get the thumbnail URL,
45034273 2159 I have deported the thumbnail URL code generation here, otherwise this would slow down page generation.
ad6c27b7 2160 The following function takes the URL a link (e.g. a flickr page) and return the proper thumbnail.
2161 This function is called by passing the URL:
45034273 2162 http://mywebsite.com/shaarli/?do=genthumbnail&hmac=[HMAC]&url=[URL]
ad6c27b7 2163 [URL] is the URL of the link (e.g. a flickr page)
45034273
SS		 2164 [HMAC] is the signature for the [URL] (so that these URL cannot be forged).
2165 The function below will fetch the image from the webservice and store it in the cache.
2166*/
2167function genThumbnail()
2168{
2169 // Make sure the parameters in the URL were generated by us.
2170 $sign = hash_hmac('sha256', $_GET['url'], $GLOBALS['salt']);
ad6c27b7 2171 if ($sign!=$_GET['hmac']) die('Naughty boy!');
45034273
SS		 2172
2173 // Let's see if we don't already have the image for this URL in the cache.
2174 $thumbname=hash('sha1',$_GET['url']).'.jpg';
2175 if (is_file($GLOBALS['config']['CACHEDIR'].'/'.$thumbname))
2176 { // We have the thumbnail, just serve it:
2177 header('Content-Type: image/jpeg');
2178 echo file_get_contents($GLOBALS['config']['CACHEDIR'].'/'.$thumbname);
2179 return;
2180 }
2181 // We may also serve a blank image (if service did not respond)
2182 $blankname=hash('sha1',$_GET['url']).'.gif';
2183 if (is_file($GLOBALS['config']['CACHEDIR'].'/'.$blankname))
2184 {
2185 header('Content-Type: image/gif');
2186 echo file_get_contents($GLOBALS['config']['CACHEDIR'].'/'.$blankname);
2187 return;
2188 }
2189
2190 // Otherwise, generate the thumbnail.
2191 $url = $_GET['url'];
2192 $domain = parse_url($url,PHP_URL_HOST);
2193
2194 if ($domain=='flickr.com' || endsWith($domain,'.flickr.com'))
2195 {
ad6c27b7 2196 // Crude replacement to handle new flickr domain policy (They prefer www. now)
45034273
SS		 2197 $url = str_replace('http://flickr.com/','http://www.flickr.com/',$url);
2198
2199 // Is this a link to an image, or to a flickr page ?
2200 $imageurl='';
2201 if (endswith(parse_url($url,PHP_URL_PATH),'.jpg'))
ad6c27b7 2202 { // This is a direct link to an image. e.g. http://farm1.staticflickr.com/5/5921913_ac83ed27bd_o.jpg
45034273
SS		 2203 preg_match('!(http://farm\d+\.staticflickr\.com/\d+/\d+_\w+_)\w.jpg!',$url,$matches);
2204 if (!empty($matches[1])) $imageurl=$matches[1].'m.jpg';
2205 }
ad6c27b7 2206 else // This is a flickr page (html)
45034273 2207 {
451314eb 2208 // Get the flickr html page.
1557cefb 2209 list($headers, $content) = get_http_response($url, 20);
451314eb 2210 if (strpos($headers[0], '200 OK') !== false)
45034273 2211 {
ad6c27b7 2212 // flickr now nicely provides the URL of the thumbnail in each flickr page.
1557cefb 2213 preg_match('!<link rel=\"image_src\" href=\"(.+?)\"!', $content, $matches);
45034273
SS		 2214 if (!empty($matches[1])) $imageurl=$matches[1];
2215
2216 // In albums (and some other pages), the link rel="image_src" is not provided,
2217 // but flickr provides:
2218 // <meta property="og:image" content="http://farm4.staticflickr.com/3398/3239339068_25d13535ff_z.jpg" />
2219 if ($imageurl=='')
2220 {
1557cefb 2221 preg_match('!<meta property=\"og:image\" content=\"(.+?)\"!', $content, $matches);
45034273
SS		 2222 if (!empty($matches[1])) $imageurl=$matches[1];
2223 }
2224 }
2225 }
2226
2227 if ($imageurl!='')
2228 { // Let's download the image.
451314eb 2229 // Image is 240x120, so 10 seconds to download should be enough.
1557cefb 2230 list($headers, $content) = get_http_response($imageurl, 10);
451314eb 2231 if (strpos($headers[0], '200 OK') !== false) {
1557cefb
A		 2232 // Save image to cache.
2233 file_put_contents($GLOBALS['config']['CACHEDIR'].'/' . $thumbname, $content);
45034273 2234 header('Content-Type: image/jpeg');
1557cefb 2235 echo $content;
45034273
SS		 2236 return;
2237 }
2238 }
2239 }
2240
2241 elseif ($domain=='vimeo.com' )
2242 {
2243 // This is more complex: we have to perform a HTTP request, then parse the result.
ad6c27b7 2244 // Maybe we should deport this to JavaScript ? Example: http://stackoverflow.com/questions/1361149/get-img-thumbnails-from-vimeo/4285098#4285098
45034273 2245 $vid = substr(parse_url($url,PHP_URL_PATH),1);
1557cefb 2246 list($headers, $content) = get_http_response('https://vimeo.com/api/v2/video/'.escape($vid).'.php', 5);
451314eb 2247 if (strpos($headers[0], '200 OK') !== false) {
1557cefb 2248 $t = unserialize($content);
45034273
SS		 2249 $imageurl = $t[0]['thumbnail_medium'];
2250 // Then we download the image and serve it to our client.
1557cefb 2251 list($headers, $content) = get_http_response($imageurl, 10);
451314eb 2252 if (strpos($headers[0], '200 OK') !== false) {
1557cefb
A		 2253 // Save image to cache.
2254 file_put_contents($GLOBALS['config']['CACHEDIR'] . '/' . $thumbname, $content);
45034273 2255 header('Content-Type: image/jpeg');
1557cefb 2256 echo $content;
45034273
SS		 2257 return;
2258 }
2259 }
2260 }
2261
2262 elseif ($domain=='ted.com' || endsWith($domain,'.ted.com'))
2263 {
2264 // The thumbnail for TED talks is located in the <link rel="image_src" [...]> tag on that page
2265 // http://www.ted.com/talks/mikko_hypponen_fighting_viruses_defending_the_net.html
2266 // <link rel="image_src" href="http://images.ted.com/images/ted/28bced335898ba54d4441809c5b1112ffaf36781_389x292.jpg" />
1557cefb 2267 list($headers, $content) = get_http_response($url, 5);
451314eb 2268 if (strpos($headers[0], '200 OK') !== false) {
45034273 2269 // Extract the link to the thumbnail
1557cefb 2270 preg_match('!link rel="image_src" href="(http://images.ted.com/images/ted/.+_\d+x\d+\.jpg)"!', $content, $matches);
45034273
SS		 2271 if (!empty($matches[1]))
2272 { // Let's download the image.
2273 $imageurl=$matches[1];
451314eb 2274 // No control on image size, so wait long enough
1557cefb 2275 list($headers, $content) = get_http_response($imageurl, 20);
451314eb 2276 if (strpos($headers[0], '200 OK') !== false) {
45034273 2277 $filepath=$GLOBALS['config']['CACHEDIR'].'/'.$thumbname;
1557cefb 2278 file_put_contents($filepath, $content); // Save image to cache.
45034273
SS		 2279 if (resizeImage($filepath))
2280 {
2281 header('Content-Type: image/jpeg');
2282 echo file_get_contents($filepath);
2283 return;
2284 }
2285 }
2286 }
2287 }
2288 }
bb8f712d 2289
45034273
SS		 2290 elseif ($domain=='xkcd.com' || endsWith($domain,'.xkcd.com'))
2291 {
2292 // There is no thumbnail available for xkcd comics, so download the whole image and resize it.
2293 // http://xkcd.com/327/
2294 // <img src="http://imgs.xkcd.com/comics/exploits_of_a_mom.png" title="<BLABLA>" alt="<BLABLA>" />
1557cefb 2295 list($headers, $content) = get_http_response($url, 5);
451314eb 2296 if (strpos($headers[0], '200 OK') !== false) {
45034273 2297 // Extract the link to the thumbnail
1557cefb 2298 preg_match('!<img src="(http://imgs.xkcd.com/comics/.*)" title="[^s]!', $content, $matches);
45034273
SS		 2299 if (!empty($matches[1]))
2300 { // Let's download the image.
2301 $imageurl=$matches[1];
451314eb 2302 // No control on image size, so wait long enough
1557cefb 2303 list($headers, $content) = get_http_response($imageurl, 20);
451314eb 2304 if (strpos($headers[0], '200 OK') !== false) {
45034273 2305 $filepath=$GLOBALS['config']['CACHEDIR'].'/'.$thumbname;
1557cefb
A		 2306 // Save image to cache.
2307 file_put_contents($filepath, $content);
45034273
SS		 2308 if (resizeImage($filepath))
2309 {
2310 header('Content-Type: image/jpeg');
2311 echo file_get_contents($filepath);
2312 return;
2313 }
2314 }
2315 }
2316 }
bb8f712d 2317 }
45034273
SS		 2318
2319 else
2320 {
2321 // For all other domains, we try to download the image and make a thumbnail.
451314eb 2322 // We allow 30 seconds max to download (and downloads are limited to 4 Mb)
1557cefb 2323 list($headers, $content) = get_http_response($url, 30);
451314eb 2324 if (strpos($headers[0], '200 OK') !== false) {
45034273 2325 $filepath=$GLOBALS['config']['CACHEDIR'].'/'.$thumbname;
1557cefb
A		 2326 // Save image to cache.
2327 file_put_contents($filepath, $content);
45034273
SS		 2328 if (resizeImage($filepath))
2329 {
2330 header('Content-Type: image/jpeg');
2331 echo file_get_contents($filepath);
2332 return;
2333 }
2334 }
2335 }
2336
2337
2338 // Otherwise, return an empty image (8x8 transparent gif)
2339 $blankgif = base64_decode('R0lGODlhCAAIAIAAAP///////yH5BAEKAAEALAAAAAAIAAgAAAIHjI+py+1dAAA7');
2340 file_put_contents($GLOBALS['config']['CACHEDIR'].'/'.$blankname,$blankgif); // Also put something in cache so that this URL is not requested twice.
2341 header('Content-Type: image/gif');
2342 echo $blankgif;
2343}
2344
2345// Make a thumbnail of the image (to width: 120 pixels)
2346// Returns true if success, false otherwise.
2347function resizeImage($filepath)
2348{
2349 if (!function_exists('imagecreatefromjpeg')) return false; // GD not present: no thumbnail possible.
2350
2351 // Trick: some stupid people rename GIF as JPEG... or else.
2352 // So we really try to open each image type whatever the extension is.
2353 $header=file_get_contents($filepath,false,NULL,0,256); // Read first 256 bytes and try to sniff file type.
2354 $im=false;
2355 $i=strpos($header,'GIF8'); if (($i!==false) && ($i==0)) $im = imagecreatefromgif($filepath); // Well this is crude, but it should be enough.
2356 $i=strpos($header,'PNG'); if (($i!==false) && ($i==1)) $im = imagecreatefrompng($filepath);
2357 $i=strpos($header,'JFIF'); if ($i!==false) $im = imagecreatefromjpeg($filepath);
2358 if (!$im) return false; // Unable to open image (corrupted or not an image)
2359 $w = imagesx($im);
2360 $h = imagesy($im);
2361 $ystart = 0; $yheight=$h;
2362 if ($h>$w) { $ystart= ($h/2)-($w/2); $yheight=$w/2; }
2363 $nw = 120; // Desired width
2364 $nh = min(floor(($h*$nw)/$w),120); // Compute new width/height, but maximum 120 pixels height.
2365 // Resize image:
2366 $im2 = imagecreatetruecolor($nw,$nh);
2367 imagecopyresampled($im2, $im, 0, 0, 0, $ystart, $nw, $nh, $w, $yheight);
2368 imageinterlace($im2,true); // For progressive JPEG.
2369 $tempname=$filepath.'_TEMP.jpg';
2370 imagejpeg($im2, $tempname, 90);
2371 imagedestroy($im);
2372 imagedestroy($im2);
9e820906 2373 unlink($filepath);
45034273
SS		 2374 rename($tempname,$filepath); // Overwrite original picture with thumbnail.
2375 return true;
2376}
2377
45034273 2378if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=genthumbnail')) { genThumbnail(); exit; } // Thumbnail generation/cache does not need the link database.
45034273 2379if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=dailyrss')) { showDailyRSS(); exit; }
45034273
SS		 2380if (!isset($_SESSION['LINKS_PER_PAGE'])) $_SESSION['LINKS_PER_PAGE']=$GLOBALS['config']['LINKS_PER_PAGE'];
2381renderPage();
03545ef6 2382?>
The personal, minimalist, super-fast, database free, bookmarking service - community repo