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Bump version to v0.6.2
[github/shaarli/Shaarli.git] / index.php
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45034273 1<?php
49e2b35b 2/**
ba833175 3 * Shaarli v0.6.2 - 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
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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
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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'] = $GLOBALS['config']['DATADIR'].'/ipbans.php';
46
2e28269b
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47// Access log
48$GLOBALS['config']['LOG_FILE'] = $GLOBALS['config']['DATADIR'].'/log.txt';
49
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50// For updates check of Shaarli
51$GLOBALS['config']['UPDATECHECK_FILENAME'] = $GLOBALS['config']['DATADIR'].'/lastupdatecheck.txt';
52
53// RainTPL cache directory (keep the trailing slash!)
54$GLOBALS['config']['RAINTPL_TMP'] = 'tmp/';
55// Raintpl template directory (keep the trailing slash!)
56$GLOBALS['config']['RAINTPL_TPL'] = 'tpl/';
57
2e28269b 58// Thumbnail cache directory
28bb2b74
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59$GLOBALS['config']['CACHEDIR'] = 'cache';
60
61// Atom & RSS feed cache directory
62$GLOBALS['config']['PAGECACHE'] = 'pagecache';
63
64
65/*
66 * Global configuration
67 */
68// Ban IP after this many failures
69$GLOBALS['config']['BAN_AFTER'] = 4;
70// Ban duration for IP address after login failures (in seconds)
71$GLOBALS['config']['BAN_DURATION'] = 1800;
72
73// Feed options
74// Enable RSS permalinks by default.
75// This corresponds to the default behavior of shaarli before this was added as an option.
76$GLOBALS['config']['ENABLE_RSS_PERMALINKS'] = true;
77// If true, an extra "ATOM feed" button will be displayed in the toolbar
78$GLOBALS['config']['SHOW_ATOM'] = false;
79
80// Link display options
caee7ff9 81$GLOBALS['config']['HIDE_PUBLIC_LINKS'] = false;
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82$GLOBALS['config']['HIDE_TIMESTAMPS'] = false;
83$GLOBALS['config']['LINKS_PER_PAGE'] = 20;
84
85// Open Shaarli (true): anyone can add/edit/delete links without having to login
86$GLOBALS['config']['OPEN_SHAARLI'] = false;
87
88// Thumbnails
89// Display thumbnails in links
90$GLOBALS['config']['ENABLE_THUMBNAILS'] = true;
91// Store thumbnails in a local cache
92$GLOBALS['config']['ENABLE_LOCALCACHE'] = true;
93
94// Update check frequency for Shaarli. 86400 seconds=24 hours
4407b45f
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95$GLOBALS['config']['UPDATECHECK_BRANCH'] = 'stable';
96$GLOBALS['config']['UPDATECHECK_INTERVAL'] = 86400;
28bb2b74
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97
98
99/*
100 * Plugin configuration
101 *
102 * Warning: order matters!
103 *
104 * These settings may be be overriden in:
105 * - data/config.php
106 * - each plugin's configuration file
107 */
6fc14d53
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108//$GLOBALS['config']['ENABLED_PLUGINS'] = array(
109// 'qrcode', 'archiveorg', 'readityourself', 'demo_plugin', 'playvideos',
110// 'wallabag', 'markdown', 'addlink_toolbar',
111//);
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112$GLOBALS['config']['ENABLED_PLUGINS'] = array('qrcode');
113
056107ab 114//$GLOBALS['plugins']['WALLABAG_URL'] = 'https://demo.wallabag.org/';
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115
116// PubSubHubbub support. Put an empty string to disable, or put your hub url here to enable.
117$GLOBALS['config']['PUBSUBHUB_URL'] = '';
118
119/*
120 * PHP configuration
121 */
ba833175 122define('shaarli_version', '0.6.2');
28bb2b74 123
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124// http://server.com/x/shaarli --> /shaarli/
125define('WEB_PATH', substr($_SERVER["REQUEST_URI"], 0, 1+strrpos($_SERVER["REQUEST_URI"], '/', 0)));
45034273 126
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127// High execution time in case of problematic imports/exports.
128ini_set('max_input_time','60');
129
130// Try to set max upload file size and read
131ini_set('memory_limit', '128M');
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132ini_set('post_max_size', '16M');
133ini_set('upload_max_filesize', '16M');
45034273 134
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135// See all error except warnings
136error_reporting(E_ALL^E_WARNING);
137// See all errors (for debugging only)
138//error_reporting(-1);
139
140/*
141 * User configuration
142 */
50c9a12e
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143if (is_file($GLOBALS['config']['CONFIG_FILE'])) {
144 require_once $GLOBALS['config']['CONFIG_FILE'];
145}
146
ca74886f 147// Shaarli library
2e28269b 148require_once 'application/ApplicationUtils.php';
01e48f26
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149require_once 'application/Cache.php';
150require_once 'application/CachedPage.php';
2e28269b 151require_once 'application/FileUtils.php';
451314eb 152require_once 'application/HttpUtils.php';
ca74886f 153require_once 'application/LinkDB.php';
d1e2f8e5 154require_once 'application/TimeZone.php';
d9d776af 155require_once 'application/Url.php';
ca74886f 156require_once 'application/Utils.php';
dd484b90 157require_once 'application/Config.php';
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158require_once 'application/PluginManager.php';
159require_once 'application/Router.php';
ca74886f 160
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161// Ensure the PHP version is supported
162try {
c9cf2715 163 ApplicationUtils::checkPHPVersion('5.3', PHP_VERSION);
2e28269b 164} catch(Exception $exc) {
d1e2f8e5 165 header('Content-Type: text/plain; charset=utf-8');
2e28269b 166 echo $exc->getMessage();
d1e2f8e5
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167 exit;
168}
169
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170// Force cookie path (but do not change lifetime)
171$cookie = session_get_cookie_params();
172$cookiedir = '';
173if (dirname($_SERVER['SCRIPT_NAME']) != '/') {
174 $cookiedir = dirname($_SERVER["SCRIPT_NAME"]).'/';
175}
176// Set default cookie expiration and path.
177session_set_cookie_params($cookie['lifetime'], $cookiedir, $_SERVER['SERVER_NAME']);
178// Set session parameters on server side.
179// If the user does not access any page within this time, his/her session is considered expired.
180define('INACTIVITY_TIMEOUT', 3600); // in seconds.
181// Use cookies to store session.
182ini_set('session.use_cookies', 1);
183// Force cookies for session (phpsessionID forbidden in URL).
184ini_set('session.use_only_cookies', 1);
185// Prevent PHP form using sessionID in URL if cookies are disabled.
186ini_set('session.use_trans_sid', false);
187
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188session_name('shaarli');
189// Start session if needed (Some server auto-start sessions).
190if (session_id() == '') {
191 session_start();
192}
193
68bc2135
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194// Regenerate session ID if invalid or not defined in cookie.
195if (isset($_COOKIE['shaarli']) && !is_session_id_valid($_COOKIE['shaarli'])) {
196 session_regenerate_id(true);
197 $_COOKIE['shaarli'] = session_id();
198}
199
45034273 200include "inc/rain.tpl.class.php"; //include Rain TPL
25f5c59d 201raintpl::$tpl_dir = $GLOBALS['config']['RAINTPL_TPL']; // template directory
25f5c59d 202raintpl::$cache_dir = $GLOBALS['config']['RAINTPL_TMP']; // cache directory
45034273 203
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204$pluginManager = PluginManager::getInstance();
205$pluginManager->load($GLOBALS['config']['ENABLED_PLUGINS']);
206
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207ob_start(); // Output buffering for the page cache.
208
209
210// In case stupid admin has left magic_quotes enabled in php.ini:
211if (get_magic_quotes_gpc())
212{
213 function stripslashes_deep($value) { $value = is_array($value) ? array_map('stripslashes_deep', $value) : stripslashes($value); return $value; }
214 $_POST = array_map('stripslashes_deep', $_POST);
215 $_GET = array_map('stripslashes_deep', $_GET);
216 $_COOKIE = array_map('stripslashes_deep', $_COOKIE);
217}
218
219// Prevent caching on client side or proxy: (yes, it's ugly)
220header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
221header("Cache-Control: no-store, no-cache, must-revalidate");
222header("Cache-Control: post-check=0, pre-check=0", false);
223header("Pragma: no-cache");
224
45034273 225// Handling of old config file which do not have the new parameters.
482d67bd 226if (empty($GLOBALS['title'])) $GLOBALS['title']='Shared links on '.escape(index_url($_SERVER));
45034273 227if (empty($GLOBALS['timezone'])) $GLOBALS['timezone']=date_default_timezone_get();
8a80e4fe 228if (empty($GLOBALS['redirector'])) $GLOBALS['redirector']='';
45034273 229if (empty($GLOBALS['disablesessionprotection'])) $GLOBALS['disablesessionprotection']=false;
bb8f712d 230if (empty($GLOBALS['privateLinkByDefault'])) $GLOBALS['privateLinkByDefault']=false;
ebb2880d 231if (empty($GLOBALS['titleLink'])) $GLOBALS['titleLink']='?';
858c5c2b 232// I really need to rewrite Shaarli with a proper configuation manager.
45034273 233
50c9a12e 234if (! is_file($GLOBALS['config']['CONFIG_FILE'])) {
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235 // Ensure Shaarli has proper access to its resources
236 $errors = ApplicationUtils::checkResourcePermissions($GLOBALS['config']);
237
238 if ($errors != array()) {
239 $message = '<p>Insufficient permissions:</p><ul>';
240
241 foreach ($errors as $error) {
242 $message .= '<li>'.$error.'</li>';
243 }
244 $message .= '</ul>';
245
246 header('Content-Type: text/html; charset=utf-8');
247 echo $message;
248 exit;
249 }
250
251 // Display the installation form if no existing config is found
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252 install();
253}
8a80e4fe 254
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255$GLOBALS['title'] = !empty($GLOBALS['title']) ? escape($GLOBALS['title']) : '';
256$GLOBALS['titleLink'] = !empty($GLOBALS['titleLink']) ? escape($GLOBALS['titleLink']) : '';
257$GLOBALS['redirector'] = !empty($GLOBALS['redirector']) ? escape($GLOBALS['redirector']) : '';
8a80e4fe 258
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259// a token depending of deployment salt, user password, and the current ip
260define('STAY_SIGNED_IN_TOKEN', sha1($GLOBALS['hash'].$_SERVER["REMOTE_ADDR"].$GLOBALS['salt']));
8a80e4fe 261
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262autoLocale(); // Sniff browser language and set date format accordingly.
263header('Content-Type: text/html; charset=utf-8'); // We use UTF-8 for proper international characters handling.
264
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265//==================================================================================================
266// Checking session state (i.e. is the user still logged in)
267//==================================================================================================
268
269function setup_login_state() {
ff69d87e 270 if ($GLOBALS['config']['OPEN_SHAARLI']) {
02ad8fb6 271 return true;
ff69d87e 272 }
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273 $userIsLoggedIn = false; // By default, we do not consider the user as logged in;
274 $loginFailure = false; // If set to true, every attempt to authenticate the user will fail. This indicates that an important condition isn't met.
ff69d87e
FE
275 if (!isset($GLOBALS['login'])) {
276 $userIsLoggedIn = false; // Shaarli is not configured yet.
277 $loginFailure = true;
278 }
279 if (isset($_COOKIE['shaarli_staySignedIn']) &&
280 $_COOKIE['shaarli_staySignedIn']===STAY_SIGNED_IN_TOKEN &&
281 !$loginFailure)
282 {
283 fillSessionInfo();
284 $userIsLoggedIn = true;
285 }
286 // If session does not exist on server side, or IP address has changed, or session has expired, logout.
287 if (empty($_SESSION['uid']) ||
288 ($GLOBALS['disablesessionprotection']==false && $_SESSION['ip']!=allIPs()) ||
289 time() >= $_SESSION['expires_on'])
290 {
291 logout();
292 $userIsLoggedIn = false;
293 $loginFailure = true;
294 }
295 if (!empty($_SESSION['longlastingsession'])) {
296 $_SESSION['expires_on']=time()+$_SESSION['longlastingsession']; // In case of "Stay signed in" checked.
297 }
298 else {
299 $_SESSION['expires_on']=time()+INACTIVITY_TIMEOUT; // Standard session expiration date.
300 }
301 if (!$loginFailure) {
302 $userIsLoggedIn = true;
303 }
304
305 return $userIsLoggedIn;
306}
ff69d87e 307$userIsLoggedIn = setup_login_state();
45034273 308
45034273 309
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310// -----------------------------------------------------------------------------------------------
311// Log to text file
312function logm($message)
313{
314 $t = strval(date('Y/m/d_H:i:s')).' - '.$_SERVER["REMOTE_ADDR"].' - '.strval($message)."\n";
657f0e25 315 file_put_contents($GLOBALS['config']['LOG_FILE'], $t, FILE_APPEND);
45034273
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316}
317
45034273
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318// ------------------------------------------------------------------------------------------
319// Sniff browser language to display dates in the right format automatically.
320// (Note that is may not work on your server if the corresponding local is not installed.)
321function autoLocale()
322{
8438a2e5 323 $attempts = array('en_US'); // Default if browser does not send HTTP_ACCEPT_LANGUAGE
ad6c27b7 324 if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) // e.g. "fr,fr-fr;q=0.8,en;q=0.5,en-us;q=0.3"
325 { // (It's a bit crude, but it works very well. Preferred language is always presented first.)
8438a2e5
A
326 if (preg_match('/([a-z]{2})-?([a-z]{2})?/i',$_SERVER['HTTP_ACCEPT_LANGUAGE'],$matches)) {
327 $loc = $matches[1] . (!empty($matches[2]) ? '_' . strtoupper($matches[2]) : '');
da49603b 328 $attempts = array($loc.'.UTF-8', $loc, str_replace('_', '-', $loc).'.UTF-8', str_replace('_', '-', $loc),
d33c5d4c
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329 $loc . '_' . strtoupper($loc).'.UTF-8', $loc . '_' . strtoupper($loc),
330 $loc . '_' . $loc.'.UTF-8', $loc . '_' . $loc, $loc . '-' . strtoupper($loc).'.UTF-8',
da49603b 331 $loc . '-' . strtoupper($loc), $loc . '-' . $loc.'.UTF-8', $loc . '-' . $loc);
8438a2e5 332 }
45034273 333 }
8438a2e5 334 setlocale(LC_TIME, $attempts); // LC_TIME = Set local for date/time format only.
45034273
SS
335}
336
337// ------------------------------------------------------------------------------------------
338// PubSubHubbub protocol support (if enabled) [UNTESTED]
339// (Source: http://aldarone.fr/les-flux-rss-shaarli-et-pubsubhubbub/ )
340if (!empty($GLOBALS['config']['PUBSUBHUB_URL'])) include './publisher.php';
341function pubsubhub()
342{
343 if (!empty($GLOBALS['config']['PUBSUBHUB_URL']))
344 {
345 $p = new Publisher($GLOBALS['config']['PUBSUBHUB_URL']);
346 $topic_url = array (
482d67bd
V
347 index_url($_SERVER).'?do=atom',
348 index_url($_SERVER).'?do=rss'
45034273
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349 );
350 $p->publish_update($topic_url);
351 }
352}
353
354// ------------------------------------------------------------------------------------------
355// Session management
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356
357// Returns the IP address of the client (Used to prevent session cookie hijacking.)
358function allIPs()
359{
360 $ip = $_SERVER["REMOTE_ADDR"];
361 // Then we use more HTTP headers to prevent session hijacking from users behind the same proxy.
362 if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) { $ip=$ip.'_'.$_SERVER['HTTP_X_FORWARDED_FOR']; }
363 if (isset($_SERVER['HTTP_CLIENT_IP'])) { $ip=$ip.'_'.$_SERVER['HTTP_CLIENT_IP']; }
364 return $ip;
365}
366
ae00595b 367function fillSessionInfo() {
ad6c27b7 368 $_SESSION['uid'] = sha1(uniqid('',true).'_'.mt_rand()); // Generate unique random number (different than phpsessionid)
ae00595b
CH
369 $_SESSION['ip']=allIPs(); // We store IP address(es) of the client to make sure session is not hijacked.
370 $_SESSION['username']=$GLOBALS['login'];
371 $_SESSION['expires_on']=time()+INACTIVITY_TIMEOUT; // Set session expiration.
372}
373
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374// Check that user/password is correct.
375function check_auth($login,$password)
376{
377 $hash = sha1($password.$login.$GLOBALS['salt']);
378 if ($login==$GLOBALS['login'] && $hash==$GLOBALS['hash'])
379 { // Login/password is correct.
ae00595b 380 fillSessionInfo();
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381 logm('Login successful');
382 return True;
383 }
384 logm('Login failed for user '.$login);
385 return False;
386}
387
388// Returns true if the user is logged in.
389function isLoggedIn()
390{
ff69d87e
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391 global $userIsLoggedIn;
392 return $userIsLoggedIn;
45034273
SS
393}
394
395// Force logout.
ff69d87e
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396function logout() {
397 if (isset($_SESSION)) {
398 unset($_SESSION['uid']);
399 unset($_SESSION['ip']);
400 unset($_SESSION['username']);
401 unset($_SESSION['privateonly']);
402 }
403 setcookie('shaarli_staySignedIn', FALSE, 0, WEB_PATH);
ae00595b 404}
45034273
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405
406
407// ------------------------------------------------------------------------------------------
408// Brute force protection system
409// Several consecutive failed logins will ban the IP address for 30 minutes.
410if (!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?>");
411include $GLOBALS['config']['IPBANS_FILENAME'];
412// Signal a failed login. Will ban the IP if too many failures:
413function ban_loginFailed()
414{
415 $ip=$_SERVER["REMOTE_ADDR"]; $gb=$GLOBALS['IPBANS'];
416 if (!isset($gb['FAILURES'][$ip])) $gb['FAILURES'][$ip]=0;
417 $gb['FAILURES'][$ip]++;
418 if ($gb['FAILURES'][$ip]>($GLOBALS['config']['BAN_AFTER']-1))
419 {
420 $gb['BANS'][$ip]=time()+$GLOBALS['config']['BAN_DURATION'];
421 logm('IP address banned from login');
422 }
423 $GLOBALS['IPBANS'] = $gb;
424 file_put_contents($GLOBALS['config']['IPBANS_FILENAME'], "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>");
425}
426
427// Signals a successful login. Resets failed login counter.
428function ban_loginOk()
429{
430 $ip=$_SERVER["REMOTE_ADDR"]; $gb=$GLOBALS['IPBANS'];
431 unset($gb['FAILURES'][$ip]); unset($gb['BANS'][$ip]);
432 $GLOBALS['IPBANS'] = $gb;
433 file_put_contents($GLOBALS['config']['IPBANS_FILENAME'], "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>");
434}
435
436// Checks if the user CAN login. If 'true', the user can try to login.
437function ban_canLogin()
438{
439 $ip=$_SERVER["REMOTE_ADDR"]; $gb=$GLOBALS['IPBANS'];
440 if (isset($gb['BANS'][$ip]))
441 {
442 // User is banned. Check if the ban has expired:
443 if ($gb['BANS'][$ip]<=time())
444 { // Ban expired, user can try to login again.
445 logm('Ban lifted.');
446 unset($gb['FAILURES'][$ip]); unset($gb['BANS'][$ip]);
447 file_put_contents($GLOBALS['config']['IPBANS_FILENAME'], "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>");
448 return true; // Ban has expired, user can login.
449 }
450 return false; // User is banned.
451 }
452 return true; // User is not banned.
453}
454
455// ------------------------------------------------------------------------------------------
456// Process login form: Check if login/password is correct.
457if (isset($_POST['login']))
458{
459 if (!ban_canLogin()) die('I said: NO. You are banned for the moment. Go away.');
460 if (isset($_POST['password']) && tokenOk($_POST['token']) && (check_auth($_POST['login'], $_POST['password'])))
ad6c27b7 461 { // Login/password is OK.
45034273
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462 ban_loginOk();
463 // If user wants to keep the session cookie even after the browser closes:
464 if (!empty($_POST['longlastingsession']))
465 {
ae00595b 466 setcookie('shaarli_staySignedIn', STAY_SIGNED_IN_TOKEN, time()+31536000, WEB_PATH);
45034273
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467 $_SESSION['longlastingsession']=31536000; // (31536000 seconds = 1 year)
468 $_SESSION['expires_on']=time()+$_SESSION['longlastingsession']; // Set session expiration on server-side.
2d9fab88
SS
469
470 $cookiedir = ''; if(dirname($_SERVER['SCRIPT_NAME'])!='/') $cookiedir=dirname($_SERVER["SCRIPT_NAME"]).'/';
2f32d074 471 session_set_cookie_params($_SESSION['longlastingsession'],$cookiedir,$_SERVER['SERVER_NAME']); // Set session cookie expiration on client side
ad6c27b7 472 // Note: Never forget the trailing slash on the cookie path!
45034273
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473 session_regenerate_id(true); // Send cookie with new expiration date to browser.
474 }
475 else // Standard session expiration (=when browser closes)
476 {
2d9fab88 477 $cookiedir = ''; if(dirname($_SERVER['SCRIPT_NAME'])!='/') $cookiedir=dirname($_SERVER["SCRIPT_NAME"]).'/';
2f32d074 478 session_set_cookie_params(0,$cookiedir,$_SERVER['SERVER_NAME']); // 0 means "When browser closes"
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479 session_regenerate_id(true);
480 }
5fbabbb9 481
45034273 482 // Optional redirect after login:
5fbabbb9
A
483 if (isset($_GET['post'])) {
484 $uri = '?post='. urlencode($_GET['post']);
485 foreach (array('description', 'source', 'title') as $param) {
486 if (!empty($_GET[$param])) {
487 $uri .= '&'.$param.'='.urlencode($_GET[$param]);
488 }
489 }
490 header('Location: '. $uri);
491 exit;
492 }
493
494 if (isset($_GET['edit_link'])) {
495 header('Location: ?edit_link='. escape($_GET['edit_link']));
496 exit;
497 }
498
499 if (isset($_POST['returnurl'])) {
500 // Prevent loops over login screen.
501 if (strpos($_POST['returnurl'], 'do=login') === false) {
502 header('Location: '. escape($_POST['returnurl']));
503 exit;
504 }
45034273
SS
505 }
506 header('Location: ?'); exit;
507 }
508 else
509 {
510 ban_loginFailed();
705f8355 511 $redir = '';
5fbabbb9
A
512 if (isset($_GET['post'])) {
513 $redir = '?post=' . urlencode($_GET['post']);
514 foreach (array('description', 'source', 'title') as $param) {
515 if (!empty($_GET[$param])) {
516 $redir .= '&' . $param . '=' . urlencode($_GET[$param]);
517 }
518 }
519 }
fe16b01e 520 echo '<script>alert("Wrong login/password.");document.location=\'?do=login'.$redir.'\';</script>'; // Redirect to login screen.
45034273
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521 exit;
522 }
523}
524
525// ------------------------------------------------------------------------------------------
526// Misc utility functions:
527
ad6c27b7 528// Convert post_max_size/upload_max_filesize (e.g. '16M') parameters to bytes.
45034273
SS
529function return_bytes($val)
530{
531 $val = trim($val); $last=strtolower($val[strlen($val)-1]);
532 switch($last)
533 {
534 case 'g': $val *= 1024;
535 case 'm': $val *= 1024;
536 case 'k': $val *= 1024;
537 }
538 return $val;
539}
540
541// Try to determine max file size for uploads (POST).
542// Returns an integer (in bytes)
543function getMaxFileSize()
544{
545 $size1 = return_bytes(ini_get('post_max_size'));
546 $size2 = return_bytes(ini_get('upload_max_filesize'));
547 // Return the smaller of two:
548 $maxsize = min($size1,$size2);
ad6c27b7 549 // FIXME: Then convert back to readable notations ? (e.g. 2M instead of 2000000)
45034273
SS
550 return $maxsize;
551}
552
45034273
SS
553/* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a timestamp (Unix epoch)
554 (used to build the ADD_DATE attribute in Netscape-bookmarks file)
555 PS: I could have used strptime(), but it does not exist on Windows. I'm too kind. */
556function linkdate2timestamp($linkdate)
557{
f5b05925
JD
558 if(strcmp($linkdate, '_000000') !== 0 || !$linkdate){
559 $Y=$M=$D=$h=$m=$s=0;
560 $r = sscanf($linkdate,'%4d%2d%2d_%2d%2d%2d',$Y,$M,$D,$h,$m,$s);
561 return mktime($h,$m,$s,$M,$D,$Y);
562 }
563 return time();
45034273
SS
564}
565
566/* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a RFC822 date.
567 (used to build the pubDate attribute in RSS feed.) */
568function linkdate2rfc822($linkdate)
569{
570 return date('r',linkdate2timestamp($linkdate)); // 'r' is for RFC822 date format.
571}
572
573/* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a ISO 8601 date.
574 (used to build the updated tags in ATOM feed.) */
575function linkdate2iso8601($linkdate)
576{
577 return date('c',linkdate2timestamp($linkdate)); // 'c' is for ISO 8601 date format.
578}
579
45034273
SS
580// Extract title from an HTML document.
581// (Returns an empty string if not found.)
582function html_extract_title($html)
583{
584 return preg_match('!<title>(.*?)</title>!is', $html, $matches) ? trim(str_replace("\n",' ', $matches[1])) : '' ;
585}
586
587// ------------------------------------------------------------------------------------------
588// Token management for XSRF protection
589// Token should be used in any form which acts on data (create,update,delete,import...).
590if (!isset($_SESSION['tokens'])) $_SESSION['tokens']=array(); // Token are attached to the session.
591
592// Returns a token.
593function getToken()
594{
a1f5a6ec 595 $rnd = sha1(uniqid('',true).'_'.mt_rand().$GLOBALS['salt']); // We generate a random string.
45034273
SS
596 $_SESSION['tokens'][$rnd]=1; // Store it on the server side.
597 return $rnd;
598}
599
ad6c27b7 600// Tells if a token is OK. Using this function will destroy the token.
601// true=token is OK.
45034273
SS
602function tokenOk($token)
603{
604 if (isset($_SESSION['tokens'][$token]))
605 {
606 unset($_SESSION['tokens'][$token]); // Token is used: destroy it.
ad6c27b7 607 return true; // Token is OK.
45034273
SS
608 }
609 return false; // Wrong token, or already used.
610}
611
612// ------------------------------------------------------------------------------------------
613/* This class is in charge of building the final page.
614 (This is basically a wrapper around RainTPL which pre-fills some fields.)
615 p = new pageBuilder;
616 p.assign('myfield','myvalue');
617 p.renderPage('mytemplate');
bb8f712d 618
45034273
SS
619*/
620class pageBuilder
621{
622 private $tpl; // RainTPL template
623
624 function __construct()
625 {
056107ab 626 $this->tpl = false;
bb8f712d 627 }
45034273 628
056107ab
A
629 /**
630 * Initialize all default tpl tags.
631 */
45034273 632 private function initialize()
bb8f712d
KT
633 {
634 $this->tpl = new RainTPL;
4407b45f
V
635
636 try {
637 $version = ApplicationUtils::checkUpdate(
638 shaarli_version,
639 $GLOBALS['config']['UPDATECHECK_FILENAME'],
640 $GLOBALS['config']['UPDATECHECK_INTERVAL'],
641 $GLOBALS['config']['ENABLE_UPDATECHECK'],
642 isLoggedIn(),
643 $GLOBALS['config']['UPDATECHECK_BRANCH']
644 );
645 $this->tpl->assign('newVersion', escape($version));
4a7af975 646 $this->tpl->assign('versionError', '');
4407b45f
V
647
648 } catch (Exception $exc) {
649 logm($exc->getMessage());
4a7af975 650 $this->tpl->assign('newVersion', '');
4407b45f
V
651 $this->tpl->assign('versionError', escape($exc->getMessage()));
652 }
653
056107ab
A
654 $this->tpl->assign('feedurl', escape(index_url($_SERVER)));
655 $searchcrits = ''; // Search criteria
656 if (!empty($_GET['searchtags'])) {
657 $searchcrits .= '&searchtags=' . urlencode($_GET['searchtags']);
658 }
659 elseif (!empty($_GET['searchterm'])) {
660 $searchcrits .= '&searchterm=' . urlencode($_GET['searchterm']);
661 }
662 $this->tpl->assign('searchcrits', $searchcrits);
663 $this->tpl->assign('source', index_url($_SERVER));
664 $this->tpl->assign('version', shaarli_version);
665 $this->tpl->assign('scripturl', index_url($_SERVER));
666 $this->tpl->assign('pagetitle', 'Shaarli');
667 $this->tpl->assign('privateonly', !empty($_SESSION['privateonly'])); // Show only private links?
668 if (!empty($GLOBALS['title'])) {
669 $this->tpl->assign('pagetitle', $GLOBALS['title']);
670 }
671 if (!empty($GLOBALS['titleLink'])) {
672 $this->tpl->assign('titleLink', $GLOBALS['titleLink']);
673 }
674 if (!empty($GLOBALS['pagetitle'])) {
675 $this->tpl->assign('pagetitle', $GLOBALS['pagetitle']);
676 }
677 $this->tpl->assign('shaarlititle', empty($GLOBALS['title']) ? 'Shaarli': $GLOBALS['title']);
e4b9a763
A
678 if (!empty($GLOBALS['plugin_errors'])) {
679 $this->tpl->assign('plugin_errors', $GLOBALS['plugin_errors']);
056107ab 680 }
45034273 681 }
bb8f712d 682
45034273
SS
683 // The following assign() method is basically the same as RainTPL (except that it's lazy)
684 public function assign($what,$where)
685 {
686 if ($this->tpl===false) $this->initialize(); // Lazy initialization
687 $this->tpl->assign($what,$where);
688 }
bb8f712d 689
45034273 690 // Render a specific page (using a template).
ad6c27b7 691 // e.g. pb.renderPage('picwall')
45034273
SS
692 public function renderPage($page)
693 {
694 if ($this->tpl===false) $this->initialize(); // Lazy initialization
695 $this->tpl->draw($page);
696 }
697}
698
45034273 699// ------------------------------------------------------------------------------------------
ad6c27b7 700// Output the last N links in RSS 2.0 format.
45034273
SS
701function showRSS()
702{
703 header('Content-Type: application/rss+xml; charset=utf-8');
704
2abd3905 705 // $usepermalink : If true, use permalink instead of final link.
ad6c27b7 706 // User just has to add 'permalink' in URL parameters. e.g. http://mysite.com/shaarli/?do=rss&permalinks
ed5b38dd
FE
707 // Also enabled through a config option
708 $usepermalinks = isset($_GET['permalinks']) || !$GLOBALS['config']['ENABLE_RSS_PERMALINKS'];
2abd3905 709
45034273
SS
710 // Cache system
711 $query = $_SERVER["QUERY_STRING"];
01e48f26
V
712 $cache = new CachedPage(
713 $GLOBALS['config']['PAGECACHE'],
482d67bd 714 page_url($_SERVER),
01e48f26
V
715 startsWith($query,'do=rss') && !isLoggedIn()
716 );
717 $cached = $cache->cachedVersion();
718 if (! empty($cached)) {
719 echo $cached;
720 exit;
721 }
45034273
SS
722
723 // If cached was not found (or not usable), then read the database and build the response:
9f15ca9e 724 $LINKSDB = new LinkDB(
9c8752a2 725 $GLOBALS['config']['DATASTORE'],
02ad8fb6 726 isLoggedIn(),
90e5bd65
A
727 $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
728 $GLOBALS['redirector']
9f15ca9e
V
729 );
730 // Read links from database (and filter private links if user it not logged in).
45034273 731
ad6c27b7 732 // Optionally filter the results:
45034273
SS
733 $linksToDisplay=array();
734 if (!empty($_GET['searchterm'])) $linksToDisplay = $LINKSDB->filterFulltext($_GET['searchterm']);
59c90f58 735 else if (!empty($_GET['searchtags'])) $linksToDisplay = $LINKSDB->filterTags(trim($_GET['searchtags']));
45034273 736 else $linksToDisplay = $LINKSDB;
f3db3774 737
c677013b
SS
738 $nblinksToDisplay = 50; // Number of links to display.
739 if (!empty($_GET['nb'])) // In URL, you can specificy the number of links. Example: nb=200 or nb=all for all links.
732e683b 740 {
c677013b
SS
741 $nblinksToDisplay = $_GET['nb']=='all' ? count($linksToDisplay) : max($_GET['nb']+0,1) ;
742 }
45034273 743
482d67bd 744 $pageaddr=escape(index_url($_SERVER));
45034273 745 echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">';
5f85fcd8 746 echo '<channel><title>'.$GLOBALS['title'].'</title><link>'.$pageaddr.'</link>';
45034273
SS
747 echo '<description>Shared links</description><language>en-en</language><copyright>'.$pageaddr.'</copyright>'."\n\n";
748 if (!empty($GLOBALS['config']['PUBSUBHUB_URL']))
749 {
750 echo '<!-- PubSubHubbub Discovery -->';
5f85fcd8
A
751 echo '<link rel="hub" href="'.escape($GLOBALS['config']['PUBSUBHUB_URL']).'" xmlns="http://www.w3.org/2005/Atom" />';
752 echo '<link rel="self" href="'.$pageaddr.'?do=rss" xmlns="http://www.w3.org/2005/Atom" />';
45034273
SS
753 echo '<!-- End Of PubSubHubbub Discovery -->';
754 }
755 $i=0;
756 $keys=array(); foreach($linksToDisplay as $key=>$value) { $keys[]=$key; } // No, I can't use array_keys().
fbd9e527 757 while ($i<$nblinksToDisplay && $i<count($keys))
45034273
SS
758 {
759 $link = $linksToDisplay[$keys[$i]];
760 $guid = $pageaddr.'?'.smallHash($link['linkdate']);
761 $rfc822date = linkdate2rfc822($link['linkdate']);
5f85fcd8 762 $absurl = $link['url'];
45034273 763 if (startsWith($absurl,'?')) $absurl=$pageaddr.$absurl; // make permalink URL absolute
2abd3905 764 if ($usepermalinks===true)
5f85fcd8 765 echo '<item><title>'.$link['title'].'</title><guid isPermaLink="true">'.$guid.'</guid><link>'.$guid.'</link>';
2abd3905 766 else
5f85fcd8
A
767 echo '<item><title>'.$link['title'].'</title><guid isPermaLink="false">'.$guid.'</guid><link>'.$absurl.'</link>';
768 if (!$GLOBALS['config']['HIDE_TIMESTAMPS'] || isLoggedIn()) echo '<pubDate>'.escape($rfc822date)."</pubDate>\n";
45034273
SS
769 if ($link['tags']!='') // Adding tags to each RSS entry (as mentioned in RSS specification)
770 {
5f85fcd8 771 foreach(explode(' ',$link['tags']) as $tag) { echo '<category domain="'.$pageaddr.'">'.$tag.'</category>'."\n"; }
45034273 772 }
2abd3905
SS
773
774 // Add permalink in description
775 $descriptionlink = '(<a href="'.$guid.'">Permalink</a>)';
776 // If user wants permalinks first, put the final link in description
777 if ($usepermalinks===true) $descriptionlink = '(<a href="'.$absurl.'">Link</a>)';
778 if (strlen($link['description'])>0) $descriptionlink = '<br>'.$descriptionlink;
90e5bd65
A
779 echo '<description><![CDATA['.
780 format_description($link['description'], $GLOBALS['redirector']) .
781 $descriptionlink . ']]></description>' . "\n</item>\n";
45034273
SS
782 $i++;
783 }
482d67bd 784 echo '</channel></rss><!-- Cached version of '.escape(page_url($_SERVER)).' -->';
45034273
SS
785
786 $cache->cache(ob_get_contents());
787 ob_end_flush();
788 exit;
789}
790
791// ------------------------------------------------------------------------------------------
ad6c27b7 792// Output the last N links in ATOM format.
45034273
SS
793function showATOM()
794{
795 header('Content-Type: application/atom+xml; charset=utf-8');
796
2abd3905 797 // $usepermalink : If true, use permalink instead of final link.
ad6c27b7 798 // User just has to add 'permalink' in URL parameters. e.g. http://mysite.com/shaarli/?do=atom&permalinks
ed5b38dd 799 $usepermalinks = isset($_GET['permalinks']) || !$GLOBALS['config']['ENABLE_RSS_PERMALINKS'];
2abd3905 800
45034273
SS
801 // Cache system
802 $query = $_SERVER["QUERY_STRING"];
01e48f26
V
803 $cache = new CachedPage(
804 $GLOBALS['config']['PAGECACHE'],
482d67bd 805 page_url($_SERVER),
01e48f26
V
806 startsWith($query,'do=atom') && !isLoggedIn()
807 );
808 $cached = $cache->cachedVersion();
809 if (!empty($cached)) {
810 echo $cached;
811 exit;
812 }
45034273 813
01e48f26
V
814 // If cached was not found (or not usable), then read the database and build the response:
815 // Read links from database (and filter private links if used it not logged in).
9f15ca9e 816 $LINKSDB = new LinkDB(
9c8752a2 817 $GLOBALS['config']['DATASTORE'],
02ad8fb6 818 isLoggedIn(),
90e5bd65
A
819 $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
820 $GLOBALS['redirector']
9f15ca9e 821 );
45034273 822
ad6c27b7 823 // Optionally filter the results:
45034273
SS
824 $linksToDisplay=array();
825 if (!empty($_GET['searchterm'])) $linksToDisplay = $LINKSDB->filterFulltext($_GET['searchterm']);
59c90f58 826 else if (!empty($_GET['searchtags'])) $linksToDisplay = $LINKSDB->filterTags(trim($_GET['searchtags']));
45034273 827 else $linksToDisplay = $LINKSDB;
f3db3774 828
c677013b
SS
829 $nblinksToDisplay = 50; // Number of links to display.
830 if (!empty($_GET['nb'])) // In URL, you can specificy the number of links. Example: nb=200 or nb=all for all links.
732e683b 831 {
c677013b
SS
832 $nblinksToDisplay = $_GET['nb']=='all' ? count($linksToDisplay) : max($_GET['nb']+0,1) ;
833 }
45034273 834
482d67bd 835 $pageaddr=escape(index_url($_SERVER));
45034273
SS
836 $latestDate = '';
837 $entries='';
838 $i=0;
839 $keys=array(); foreach($linksToDisplay as $key=>$value) { $keys[]=$key; } // No, I can't use array_keys().
fbd9e527 840 while ($i<$nblinksToDisplay && $i<count($keys))
45034273
SS
841 {
842 $link = $linksToDisplay[$keys[$i]];
843 $guid = $pageaddr.'?'.smallHash($link['linkdate']);
844 $iso8601date = linkdate2iso8601($link['linkdate']);
845 $latestDate = max($latestDate,$iso8601date);
5f85fcd8 846 $absurl = $link['url'];
45034273 847 if (startsWith($absurl,'?')) $absurl=$pageaddr.$absurl; // make permalink URL absolute
5f85fcd8 848 $entries.='<entry><title>'.$link['title'].'</title>';
2abd3905
SS
849 if ($usepermalinks===true)
850 $entries.='<link href="'.$guid.'" /><id>'.$guid.'</id>';
851 else
852 $entries.='<link href="'.$absurl.'" /><id>'.$guid.'</id>';
5f85fcd8 853 if (!$GLOBALS['config']['HIDE_TIMESTAMPS'] || isLoggedIn()) $entries.='<updated>'.escape($iso8601date).'</updated>';
2abd3905
SS
854
855 // Add permalink in description
5f85fcd8 856 $descriptionlink = '(<a href="'.$guid.'">Permalink</a>)';
2abd3905 857 // If user wants permalinks first, put the final link in description
5f85fcd8
A
858 if ($usepermalinks===true) $descriptionlink = '(<a href="'.$absurl.'">Link</a>)';
859 if (strlen($link['description'])>0) $descriptionlink = '<br>'.$descriptionlink;
2abd3905 860
90e5bd65
A
861 $entries .= '<content type="html"><![CDATA['.
862 format_description($link['description'], $GLOBALS['redirector']) .
863 $descriptionlink . "]]></content>\n";
45034273
SS
864 if ($link['tags']!='') // Adding tags to each ATOM entry (as mentioned in ATOM specification)
865 {
866 foreach(explode(' ',$link['tags']) as $tag)
5f85fcd8 867 { $entries.='<category scheme="'.$pageaddr.'" term="'.$tag.'" />'."\n"; }
45034273
SS
868 }
869 $entries.="</entry>\n";
870 $i++;
871 }
872 $feed='<?xml version="1.0" encoding="UTF-8"?><feed xmlns="http://www.w3.org/2005/Atom">';
5f85fcd8
A
873 $feed.='<title>'.$GLOBALS['title'].'</title>';
874 if (!$GLOBALS['config']['HIDE_TIMESTAMPS'] || isLoggedIn()) $feed.='<updated>'.escape($latestDate).'</updated>';
482d67bd 875 $feed.='<link rel="self" href="'.escape(server_url($_SERVER).$_SERVER["REQUEST_URI"]).'" />';
45034273
SS
876 if (!empty($GLOBALS['config']['PUBSUBHUB_URL']))
877 {
878 $feed.='<!-- PubSubHubbub Discovery -->';
5f85fcd8 879 $feed.='<link rel="hub" href="'.escape($GLOBALS['config']['PUBSUBHUB_URL']).'" />';
45034273
SS
880 $feed.='<!-- End Of PubSubHubbub Discovery -->';
881 }
5f85fcd8
A
882 $feed.='<author><name>'.$pageaddr.'</name><uri>'.$pageaddr.'</uri></author>';
883 $feed.='<id>'.$pageaddr.'</id>'."\n\n"; // Yes, I know I should use a real IRI (RFC3987), but the site URL will do.
45034273 884 $feed.=$entries;
482d67bd 885 $feed.='</feed><!-- Cached version of '.escape(page_url($_SERVER)).' -->';
45034273 886 echo $feed;
bb8f712d 887
45034273
SS
888 $cache->cache(ob_get_contents());
889 ob_end_flush();
890 exit;
891}
892
893// ------------------------------------------------------------------------------------------
894// Daily RSS feed: 1 RSS entry per day giving all the links on that day.
895// Gives the last 7 days (which have links).
896// This RSS feed cannot be filtered.
f3b8f9f0 897function showDailyRSS() {
45034273
SS
898 // Cache system
899 $query = $_SERVER["QUERY_STRING"];
01e48f26
V
900 $cache = new CachedPage(
901 $GLOBALS['config']['PAGECACHE'],
482d67bd 902 page_url($_SERVER),
01e48f26
V
903 startsWith($query,'do=dailyrss') && !isLoggedIn()
904 );
f3b8f9f0
A
905 $cached = $cache->cachedVersion();
906 if (!empty($cached)) {
907 echo $cached;
908 exit;
909 }
9f15ca9e 910
f3b8f9f0
A
911 // If cached was not found (or not usable), then read the database and build the response:
912 // Read links from database (and filter private links if used it not logged in).
9f15ca9e 913 $LINKSDB = new LinkDB(
9c8752a2 914 $GLOBALS['config']['DATASTORE'],
02ad8fb6 915 isLoggedIn(),
90e5bd65
A
916 $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
917 $GLOBALS['redirector']
9f15ca9e 918 );
bb8f712d 919
45034273
SS
920 /* Some Shaarlies may have very few links, so we need to look
921 back in time (rsort()) until we have enough days ($nb_of_days).
922 */
f3b8f9f0
A
923 $linkdates = array();
924 foreach ($LINKSDB as $linkdate => $value) {
925 $linkdates[] = $linkdate;
926 }
45034273 927 rsort($linkdates);
f3b8f9f0
A
928 $nb_of_days = 7; // We take 7 days.
929 $today = Date('Ymd');
930 $days = array();
931
932 foreach ($linkdates as $linkdate) {
933 $day = substr($linkdate, 0, 8); // Extract day (without time)
934 if (strcmp($day,$today) < 0) {
935 if (empty($days[$day])) {
936 $days[$day] = array();
937 }
938 $days[$day][] = $linkdate;
939 }
940
941 if (count($days) > $nb_of_days) {
942 break; // Have we collected enough days?
45034273 943 }
45034273 944 }
bb8f712d 945
45034273
SS
946 // Build the RSS feed.
947 header('Content-Type: application/rss+xml; charset=utf-8');
482d67bd 948 $pageaddr = escape(index_url($_SERVER));
45034273 949 echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0">';
f3b8f9f0
A
950 echo '<channel>';
951 echo '<title>Daily - '. $GLOBALS['title'] . '</title>';
952 echo '<link>'. $pageaddr .'</link>';
953 echo '<description>Daily shared links</description>';
954 echo '<language>en-en</language>';
955 echo '<copyright>'. $pageaddr .'</copyright>'. PHP_EOL;
956
957 // For each day.
958 foreach ($days as $day => $linkdates) {
959 $daydate = linkdate2timestamp($day.'_000000'); // Full text date
45034273 960 $rfc822date = linkdate2rfc822($day.'_000000');
482d67bd 961 $absurl = escape(index_url($_SERVER).'?do=daily&day='.$day); // Absolute URL of the corresponding "Daily" page.
bb8f712d 962
45034273 963 // Build the HTML body of this RSS entry.
f3b8f9f0
A
964 $html = '';
965 $href = '';
966 $links = array();
967
45034273 968 // We pre-format some fields for proper output.
f3b8f9f0 969 foreach ($linkdates as $linkdate) {
45034273 970 $l = $LINKSDB[$linkdate];
90e5bd65 971 $l['formatedDescription'] = format_description($l['description'], $GLOBALS['redirector']);
bb8f712d 972 $l['thumbnail'] = thumbnail($l['url']);
a5752e77 973 $l['timestamp'] = linkdate2timestamp($l['linkdate']);
f3b8f9f0 974 if (startsWith($l['url'], '?')) {
482d67bd 975 $l['url'] = index_url($_SERVER) . $l['url']; // make permalink URL absolute
f3b8f9f0
A
976 }
977 $links[$linkdate] = $l;
45034273 978 }
f3b8f9f0 979
45034273 980 // Then build the HTML for this day:
bb8f712d 981 $tpl = new RainTPL;
f3b8f9f0
A
982 $tpl->assign('title', $GLOBALS['title']);
983 $tpl->assign('daydate', $daydate);
984 $tpl->assign('absurl', $absurl);
985 $tpl->assign('links', $links);
986 $tpl->assign('rfc822date', escape($rfc822date));
987 $html = $tpl->draw('dailyrss', $return_string=true);
45034273 988
f3b8f9f0 989 echo $html . PHP_EOL;
bb8f712d 990 }
482d67bd 991 echo '</channel></rss><!-- Cached version of '. escape(page_url($_SERVER)) .' -->';
bb8f712d 992
45034273
SS
993 $cache->cache(ob_get_contents());
994 ob_end_flush();
995 exit;
996}
997
38603b24
A
998/**
999 * Show the 'Daily' page.
1000 *
1001 * @param PageBuilder $pageBuilder Template engine wrapper.
1002 */
1003function showDaily($pageBuilder)
45034273 1004{
9f15ca9e 1005 $LINKSDB = new LinkDB(
9c8752a2 1006 $GLOBALS['config']['DATASTORE'],
02ad8fb6 1007 isLoggedIn(),
90e5bd65
A
1008 $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
1009 $GLOBALS['redirector']
9f15ca9e 1010 );
45034273
SS
1011
1012 $day=Date('Ymd',strtotime('-1 day')); // Yesterday, in format YYYYMMDD.
1013 if (isset($_GET['day'])) $day=$_GET['day'];
bb8f712d 1014
45034273
SS
1015 $days = $LINKSDB->days();
1016 $i = array_search($day,$days);
f3db3774 1017 if ($i===false) { $i=count($days)-1; $day=$days[$i]; }
bb8f712d
KT
1018 $previousday='';
1019 $nextday='';
45034273
SS
1020 if ($i!==false)
1021 {
f3db3774 1022 if ($i>=1) $previousday=$days[$i-1];
45034273
SS
1023 if ($i<count($days)-1) $nextday=$days[$i+1];
1024 }
1025
9186ab95
V
1026 try {
1027 $linksToDisplay = $LINKSDB->filterDay($day);
1028 } catch (Exception $exc) {
1029 error_log($exc);
d1e2f8e5 1030 $linksToDisplay = array();
9186ab95
V
1031 }
1032
45034273
SS
1033 // We pre-format some fields for proper output.
1034 foreach($linksToDisplay as $key=>$link)
1035 {
5f85fcd8 1036
dd62b9ba
SS
1037 $taglist = explode(' ',$link['tags']);
1038 uasort($taglist, 'strcasecmp');
1039 $linksToDisplay[$key]['taglist']=$taglist;
90e5bd65 1040 $linksToDisplay[$key]['formatedDescription'] = format_description($link['description'], $GLOBALS['redirector']);
bb8f712d 1041 $linksToDisplay[$key]['thumbnail'] = thumbnail($link['url']);
a5752e77 1042 $linksToDisplay[$key]['timestamp'] = linkdate2timestamp($link['linkdate']);
45034273 1043 }
bb8f712d 1044
45034273 1045 /* We need to spread the articles on 3 columns.
ad6c27b7 1046 I did not want to use a JavaScript lib like http://masonry.desandro.com/
bb8f712d 1047 so I manually spread entries with a simple method: I roughly evaluate the
45034273
SS
1048 height of a div according to title and description length.
1049 */
1050 $columns=array(array(),array(),array()); // Entries to display, for each column.
1051 $fill=array(0,0,0); // Rough estimate of columns fill.
1052 foreach($linksToDisplay as $key=>$link)
1053 {
1054 // Roughly estimate length of entry (by counting characters)
1055 // Title: 30 chars = 1 line. 1 line is 30 pixels height.
1056 // Description: 836 characters gives roughly 342 pixel height.
ad6c27b7 1057 // This is not perfect, but it's usually OK.
45034273
SS
1058 $length=strlen($link['title'])+(342*strlen($link['description']))/836;
1059 if ($link['thumbnail']) $length +=100; // 1 thumbnails roughly takes 100 pixels height.
1060 // Then put in column which is the less filled:
1061 $smallest=min($fill); // find smallest value in array.
1062 $index=array_search($smallest,$fill); // find index of this smallest value.
1063 array_push($columns[$index],$link); // Put entry in this column.
1064 $fill[$index]+=$length;
1065 }
38603b24 1066
6fc14d53
A
1067 $data = array(
1068 'linksToDisplay' => $linksToDisplay,
1069 'linkcount' => count($LINKSDB),
1070 'cols' => $columns,
1071 'day' => linkdate2timestamp($day.'_000000'),
1072 'previousday' => $previousday,
1073 'nextday' => $nextday,
1074 );
1075 $pluginManager = PluginManager::getInstance();
1076 $pluginManager->executeHooks('render_daily', $data, array('loggedin' => isLoggedIn()));
1077
1078 foreach ($data as $key => $value) {
38603b24 1079 $pageBuilder->assign($key, $value);
6fc14d53
A
1080 }
1081
38603b24 1082 $pageBuilder->renderPage('daily');
45034273
SS
1083 exit;
1084}
1085
6fc14d53
A
1086// Renders the linklist
1087function showLinkList($PAGE, $LINKSDB) {
1088 buildLinkList($PAGE,$LINKSDB); // Compute list of links to display
1089 $PAGE->renderPage('linklist');
1090}
1091
45034273
SS
1092
1093// ------------------------------------------------------------------------------------------
1094// Render HTML page (according to URL parameters and user rights)
1095function renderPage()
1096{
9f15ca9e 1097 $LINKSDB = new LinkDB(
9c8752a2 1098 $GLOBALS['config']['DATASTORE'],
02ad8fb6 1099 isLoggedIn(),
90e5bd65
A
1100 $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
1101 $GLOBALS['redirector']
9f15ca9e 1102 );
45034273 1103
6fc14d53
A
1104 $PAGE = new pageBuilder;
1105
1106 // Determine which page will be rendered.
1107 $query = (isset($_SERVER['QUERY_STRING'])) ? $_SERVER['QUERY_STRING'] : '';
1108 $targetPage = Router::findPage($query, $_GET, isLoggedIn());
1109
1110 // Call plugin hooks for header, footer and includes, specifying which page will be rendered.
1111 // Then assign generated data to RainTPL.
1112 $common_hooks = array(
1113 'header',
1114 'footer',
1115 'includes',
1116 );
1117 $pluginManager = PluginManager::getInstance();
1118 foreach($common_hooks as $name) {
1119 $plugin_data = array();
1120 $pluginManager->executeHooks('render_' . $name, $plugin_data,
1121 array(
1122 'target' => $targetPage,
1123 'loggedin' => isLoggedIn()
1124 )
1125 );
1126 $PAGE->assign('plugins_' . $name, $plugin_data);
1127 }
1128
45034273 1129 // -------- Display login form.
6fc14d53 1130 if ($targetPage == Router::$PAGE_LOGIN)
45034273
SS
1131 {
1132 if ($GLOBALS['config']['OPEN_SHAARLI']) { header('Location: ?'); exit; } // No need to login for open Shaarli
1133 $token=''; if (ban_canLogin()) $token=getToken(); // Do not waste token generation if not useful.
45034273 1134 $PAGE->assign('token',$token);
5f85fcd8 1135 $PAGE->assign('returnurl',(isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']):''));
45034273
SS
1136 $PAGE->renderPage('loginform');
1137 exit;
1138 }
1139 // -------- User wants to logout.
1140 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=logout'))
1141 {
01e48f26 1142 invalidateCaches($GLOBALS['config']['PAGECACHE']);
45034273
SS
1143 logout();
1144 header('Location: ?');
1145 exit;
1146 }
1147
1148 // -------- Picture wall
6fc14d53 1149 if ($targetPage == Router::$PAGE_PICWALL)
45034273 1150 {
ad6c27b7 1151 // Optionally filter the results:
45034273
SS
1152 $links=array();
1153 if (!empty($_GET['searchterm'])) $links = $LINKSDB->filterFulltext($_GET['searchterm']);
1154 elseif (!empty($_GET['searchtags'])) $links = $LINKSDB->filterTags(trim($_GET['searchtags']));
1155 else $links = $LINKSDB;
f3db3774 1156
45034273
SS
1157 $body='';
1158 $linksToDisplay=array();
1159
1160 // Get only links which have a thumbnail.
1161 foreach($links as $link)
1162 {
5f85fcd8 1163 $permalink='?'.escape(smallhash($link['linkdate']));
45034273
SS
1164 $thumb=lazyThumbnail($link['url'],$permalink);
1165 if ($thumb!='') // Only output links which have a thumbnail.
1166 {
1167 $link['thumbnail']=$thumb; // Thumbnail HTML code.
45034273
SS
1168 $linksToDisplay[]=$link; // Add to array.
1169 }
1170 }
f3db3774 1171
6fc14d53
A
1172 $data = array(
1173 'linkcount' => count($LINKSDB),
1174 'linksToDisplay' => $linksToDisplay,
1175 );
1176 $pluginManager->executeHooks('render_picwall', $data, array('loggedin' => isLoggedIn()));
1177
1178 foreach ($data as $key => $value) {
1179 $PAGE->assign($key, $value);
1180 }
1181
45034273
SS
1182 $PAGE->renderPage('picwall');
1183 exit;
1184 }
1185
1186 // -------- Tag cloud
6fc14d53 1187 if ($targetPage == Router::$PAGE_TAGCLOUD)
45034273
SS
1188 {
1189 $tags= $LINKSDB->allTags();
a037ac69 1190
45034273
SS
1191 // We sort tags alphabetically, then choose a font size according to count.
1192 // First, find max value.
1193 $maxcount=0; foreach($tags as $key=>$value) $maxcount=max($maxcount,$value);
1194 ksort($tags);
1195 $tagList=array();
1196 foreach($tags as $key=>$value)
1e3b2740 1197 // Tag font size scaling: default 15 and 30 logarithm bases affect scaling, 22 and 6 are arbitrary font sizes for max and min sizes.
45034273 1198 {
1e3b2740 1199 $tagList[$key] = array('count'=>$value,'size'=>log($value, 15) / log($maxcount, 30) * (22-6) + 6);
45034273 1200 }
6fc14d53
A
1201
1202 $data = array(
1203 'linkcount' => count($LINKSDB),
1204 'tags' => $tagList,
1205 );
1206 $pluginManager->executeHooks('render_tagcloud', $data, array('loggedin' => isLoggedIn()));
1207
1208 foreach ($data as $key => $value) {
1209 $PAGE->assign($key, $value);
1210 }
1211
45034273 1212 $PAGE->renderPage('tagcloud');
bb8f712d 1213 exit;
45034273
SS
1214 }
1215
38603b24
A
1216 // Daily page.
1217 if ($targetPage == Router::$PAGE_DAILY) {
1218 showDaily($PAGE);
1219 }
1220
8f8113b9
A
1221 // Display openseach plugin (XML)
1222 if ($targetPage == Router::$PAGE_OPENSEARCH) {
1223 header('Content-Type: application/xml; charset=utf-8');
1224 $PAGE->assign('serverurl', index_url($_SERVER));
1225 $PAGE->renderPage('opensearch');
1226 exit;
1227 }
1228
45034273
SS
1229 // -------- User clicks on a tag in a link: The tag is added to the list of searched tags (searchtags=...)
1230 if (isset($_GET['addtag']))
1231 {
1232 // Get previous URL (http_referer) and add the tag to the searchtags parameters in query.
1233 if (empty($_SERVER['HTTP_REFERER'])) { header('Location: ?searchtags='.urlencode($_GET['addtag'])); exit; } // In case browser does not send HTTP_REFERER
1234 parse_str(parse_url($_SERVER['HTTP_REFERER'],PHP_URL_QUERY), $params);
732e683b 1235
775803a0
A
1236 // Prevent redirection loop
1237 if (isset($params['addtag'])) {
1238 unset($params['addtag']);
1239 }
1240
732e683b
FE
1241 // Check if this tag is already in the search query and ignore it if it is.
1242 // Each tag is always separated by a space
6ac95d9c
A
1243 if (isset($params['searchtags'])) {
1244 $current_tags = explode(' ', $params['searchtags']);
1245 } else {
1246 $current_tags = array();
1247 }
732e683b
FE
1248 $addtag = true;
1249 foreach ($current_tags as $value) {
1250 if ($value === $_GET['addtag']) {
1251 $addtag = false;
1252 break;
1253 }
1254 }
1255 // Append the tag if necessary
1256 if (empty($params['searchtags'])) {
1257 $params['searchtags'] = trim($_GET['addtag']);
1258 }
1259 else if ($addtag) {
1260 $params['searchtags'] = trim($params['searchtags']).' '.trim($_GET['addtag']);
1261 }
1262
45034273
SS
1263 unset($params['page']); // We also remove page (keeping the same page has no sense, since the results are different)
1264 header('Location: ?'.http_build_query($params));
1265 exit;
1266 }
1267
1268 // -------- User clicks on a tag in result count: Remove the tag from the list of searched tags (searchtags=...)
775803a0 1269 if (isset($_GET['removetag'])) {
45034273 1270 // Get previous URL (http_referer) and remove the tag from the searchtags parameters in query.
775803a0
A
1271 if (empty($_SERVER['HTTP_REFERER'])) {
1272 header('Location: ?');
1273 exit;
1274 }
1275
1276 // In case browser does not send HTTP_REFERER
1277 parse_str(parse_url($_SERVER['HTTP_REFERER'], PHP_URL_QUERY), $params);
1278
1279 // Prevent redirection loop
1280 if (isset($params['removetag'])) {
1281 unset($params['removetag']);
1282 }
1283
1284 if (isset($params['searchtags'])) {
45034273
SS
1285 $tags = explode(' ',$params['searchtags']);
1286 $tags=array_diff($tags, array($_GET['removetag'])); // Remove value from array $tags.
775803a0
A
1287 if (count($tags)==0) {
1288 unset($params['searchtags']);
1289 } else {
1290 $params['searchtags'] = implode(' ',$tags);
1291 }
45034273
SS
1292 unset($params['page']); // We also remove page (keeping the same page has no sense, since the results are different)
1293 }
1294 header('Location: ?'.http_build_query($params));
1295 exit;
1296 }
1297
1298 // -------- User wants to change the number of links per page (linksperpage=...)
775803a0
A
1299 if (isset($_GET['linksperpage'])) {
1300 if (is_numeric($_GET['linksperpage'])) {
1301 $_SESSION['LINKS_PER_PAGE']=abs(intval($_GET['linksperpage']));
1302 }
1303
1304 header('Location: '. generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('linksperpage')));
45034273
SS
1305 exit;
1306 }
bb8f712d 1307
45034273 1308 // -------- User wants to see only private links (toggle)
775803a0
A
1309 if (isset($_GET['privateonly'])) {
1310 if (empty($_SESSION['privateonly'])) {
1311 $_SESSION['privateonly'] = 1; // See only private links
1312 } else {
45034273
SS
1313 unset($_SESSION['privateonly']); // See all links
1314 }
775803a0
A
1315
1316 header('Location: '. generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('privateonly')));
45034273
SS
1317 exit;
1318 }
1319
1320 // -------- Handle other actions allowed for non-logged in users:
1321 if (!isLoggedIn())
1322 {
ad6c27b7 1323 // User tries to post new link but is not logged in:
45034273
SS
1324 // Show login screen, then redirect to ?post=...
1325 if (isset($_GET['post']))
1326 {
a1795ddc 1327 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($_GET['source']):'')); // Redirect to login page, then back to post link.
45034273
SS
1328 exit;
1329 }
aedc912d
FE
1330
1331 // Same case as above except that user tried to access ?do=addlink without being logged in
1332 // Note: passing empty parameters makes Shaarli generate default URLs and descriptions.
1333 if (isset($_GET['do']) && $_GET['do'] === 'addlink') {
1334 header('Location: ?do=login&post=');
1335 exit;
1336 }
6fc14d53 1337 showLinkList($PAGE, $LINKSDB);
5fbabbb9
A
1338 if (isset($_GET['edit_link'])) {
1339 header('Location: ?do=login&edit_link='. escape($_GET['edit_link']));
1340 exit;
1341 }
1342
ad6c27b7 1343 exit; // Never remove this one! All operations below are reserved for logged in user.
45034273
SS
1344 }
1345
1346 // -------- All other functions are reserved for the registered user:
1347
1348 // -------- Display the Tools menu if requested (import/export/bookmarklet...)
6fc14d53 1349 if ($targetPage == Router::$PAGE_TOOLS)
45034273 1350 {
6fc14d53
A
1351 $data = array(
1352 'linkcount' => count($LINKSDB),
1353 'pageabsaddr' => index_url($_SERVER),
1354 );
1355 $pluginManager->executeHooks('render_tools', $data);
1356
1357 foreach ($data as $key => $value) {
1358 $PAGE->assign($key, $value);
1359 }
1360
45034273
SS
1361 $PAGE->renderPage('tools');
1362 exit;
1363 }
1364
1365 // -------- User wants to change his/her password.
6fc14d53 1366 if ($targetPage == Router::$PAGE_CHANGEPASSWORD)
45034273
SS
1367 {
1368 if ($GLOBALS['config']['OPEN_SHAARLI']) die('You are not supposed to change a password on an Open Shaarli.');
1369 if (!empty($_POST['setpassword']) && !empty($_POST['oldpassword']))
1370 {
ad6c27b7 1371 if (!tokenOk($_POST['token'])) die('Wrong token.'); // Go away!
45034273
SS
1372
1373 // Make sure old password is correct.
1374 $oldhash = sha1($_POST['oldpassword'].$GLOBALS['login'].$GLOBALS['salt']);
fe16b01e 1375 if ($oldhash!=$GLOBALS['hash']) { echo '<script>alert("The old password is not correct.");document.location=\'?do=changepasswd\';</script>'; exit; }
45034273
SS
1376 // Save new password
1377 $GLOBALS['salt'] = sha1(uniqid('',true).'_'.mt_rand()); // Salt renders rainbow-tables attacks useless.
1378 $GLOBALS['hash'] = sha1($_POST['setpassword'].$GLOBALS['login'].$GLOBALS['salt']);
dd484b90
A
1379 try {
1380 writeConfig($GLOBALS, isLoggedIn());
1381 }
1382 catch(Exception $e) {
1383 error_log(
1384 'ERROR while writing config file after changing password.' . PHP_EOL .
1385 $e->getMessage()
1386 );
1387
1388 // TODO: do not handle exceptions/errors in JS.
1389 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do=tools\';</script>';
1390 exit;
1391 }
fe16b01e 1392 echo '<script>alert("Your password has been changed.");document.location=\'?do=tools\';</script>';
45034273
SS
1393 exit;
1394 }
1395 else // show the change password form.
1396 {
45034273
SS
1397 $PAGE->assign('linkcount',count($LINKSDB));
1398 $PAGE->assign('token',getToken());
1399 $PAGE->renderPage('changepassword');
1400 exit;
1401 }
1402 }
1403
1404 // -------- User wants to change configuration
6fc14d53 1405 if ($targetPage == Router::$PAGE_CONFIGURE)
45034273
SS
1406 {
1407 if (!empty($_POST['title']) )
1408 {
ad6c27b7 1409 if (!tokenOk($_POST['token'])) die('Wrong token.'); // Go away!
45034273
SS
1410 $tz = 'UTC';
1411 if (!empty($_POST['continent']) && !empty($_POST['city']))
d1e2f8e5 1412 if (isTimeZoneValid($_POST['continent'],$_POST['city']))
45034273
SS
1413 $tz = $_POST['continent'].'/'.$_POST['city'];
1414 $GLOBALS['timezone'] = $tz;
1415 $GLOBALS['title']=$_POST['title'];
ebb2880d 1416 $GLOBALS['titleLink']=$_POST['titleLink'];
45034273
SS
1417 $GLOBALS['redirector']=$_POST['redirector'];
1418 $GLOBALS['disablesessionprotection']=!empty($_POST['disablesessionprotection']);
bb8f712d 1419 $GLOBALS['privateLinkByDefault']=!empty($_POST['privateLinkByDefault']);
ed5b38dd 1420 $GLOBALS['config']['ENABLE_RSS_PERMALINKS']= !empty($_POST['enableRssPermalinks']);
329e0768 1421 $GLOBALS['config']['ENABLE_UPDATECHECK'] = !empty($_POST['updateCheck']);
caee7ff9 1422 $GLOBALS['config']['HIDE_PUBLIC_LINKS'] = !empty($_POST['hidePublicLinks']);
dd484b90
A
1423 try {
1424 writeConfig($GLOBALS, isLoggedIn());
1425 }
1426 catch(Exception $e) {
1427 error_log(
1428 'ERROR while writing config file after configuration update.' . PHP_EOL .
1429 $e->getMessage()
1430 );
1431
1432 // TODO: do not handle exceptions/errors in JS.
1433 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do=tools\';</script>';
1434 exit;
1435 }
fe16b01e 1436 echo '<script>alert("Configuration was saved.");document.location=\'?do=tools\';</script>';
45034273
SS
1437 exit;
1438 }
1439 else // Show the configuration form.
1440 {
45034273
SS
1441 $PAGE->assign('linkcount',count($LINKSDB));
1442 $PAGE->assign('token',getToken());
5f85fcd8
A
1443 $PAGE->assign('title', empty($GLOBALS['title']) ? '' : $GLOBALS['title'] );
1444 $PAGE->assign('redirector', empty($GLOBALS['redirector']) ? '' : $GLOBALS['redirector'] );
d1e2f8e5
V
1445 list($timezone_form, $timezone_js) = generateTimeZoneForm($GLOBALS['timezone']);
1446 $PAGE->assign('timezone_form', $timezone_form);
45034273
SS
1447 $PAGE->assign('timezone_js',$timezone_js);
1448 $PAGE->renderPage('configure');
1449 exit;
1450 }
1451 }
1452
1453 // -------- User wants to rename a tag or delete it
6fc14d53 1454 if ($targetPage == Router::$PAGE_CHANGETAG)
45034273
SS
1455 {
1456 if (empty($_POST['fromtag']))
1457 {
45034273
SS
1458 $PAGE->assign('linkcount',count($LINKSDB));
1459 $PAGE->assign('token',getToken());
bdd1715b 1460 $PAGE->assign('tags', $LINKSDB->allTags());
45034273
SS
1461 $PAGE->renderPage('changetag');
1462 exit;
1463 }
1464 if (!tokenOk($_POST['token'])) die('Wrong token.');
1465
1466 // Delete a tag:
1467 if (!empty($_POST['deletetag']) && !empty($_POST['fromtag']))
1468 {
1469 $needle=trim($_POST['fromtag']);
ad6c27b7 1470 $linksToAlter = $LINKSDB->filterTags($needle,true); // True for case-sensitive tag search.
45034273
SS
1471 foreach($linksToAlter as $key=>$value)
1472 {
1473 $tags = explode(' ',trim($value['tags']));
1474 unset($tags[array_search($needle,$tags)]); // Remove tag.
1475 $value['tags']=trim(implode(' ',$tags));
1476 $LINKSDB[$key]=$value;
1477 }
2e28269b 1478 $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']);
fe16b01e 1479 echo '<script>alert("Tag was removed from '.count($linksToAlter).' links.");document.location=\'?\';</script>';
45034273
SS
1480 exit;
1481 }
1482
1483 // Rename a tag:
1484 if (!empty($_POST['renametag']) && !empty($_POST['fromtag']) && !empty($_POST['totag']))
1485 {
1486 $needle=trim($_POST['fromtag']);
1487 $linksToAlter = $LINKSDB->filterTags($needle,true); // true for case-sensitive tag search.
1488 foreach($linksToAlter as $key=>$value)
1489 {
1490 $tags = explode(' ',trim($value['tags']));
ad6c27b7 1491 $tags[array_search($needle,$tags)] = trim($_POST['totag']); // Replace tags value.
45034273
SS
1492 $value['tags']=trim(implode(' ',$tags));
1493 $LINKSDB[$key]=$value;
1494 }
01e48f26 1495 $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']); // Save to disk.
fe16b01e 1496 echo '<script>alert("Tag was renamed in '.count($linksToAlter).' links.");document.location=\'?searchtags='.urlencode($_POST['totag']).'\';</script>';
45034273
SS
1497 exit;
1498 }
1499 }
1500
ad6c27b7 1501 // -------- User wants to add a link without using the bookmarklet: Show form.
6fc14d53 1502 if ($targetPage == Router::$PAGE_ADDLINK)
45034273 1503 {
45034273
SS
1504 $PAGE->assign('linkcount',count($LINKSDB));
1505 $PAGE->renderPage('addlink');
1506 exit;
1507 }
1508
1509 // -------- User clicked the "Save" button when editing a link: Save link to database.
1510 if (isset($_POST['save_edit']))
1511 {
ad6c27b7 1512 if (!tokenOk($_POST['token'])) die('Wrong token.'); // Go away!
45034273 1513 $tags = trim(preg_replace('/\s\s+/',' ', $_POST['lf_tags'])); // Remove multiple spaces.
781e8aad 1514 $tags = implode(' ', array_unique(explode(' ', $tags))); // Remove duplicates.
45034273 1515 $linkdate=$_POST['lf_linkdate'];
feebc6d4 1516 $url = trim($_POST['lf_url']);
f81139c9 1517 if (!startsWith($url,'http:') && !startsWith($url,'https:') && !startsWith($url,'ftp:') && !startsWith($url,'magnet:') && !startsWith($url,'?') && !startsWith($url,'javascript:'))
feebc6d4
SS
1518 $url = 'http://'.$url;
1519 $link = array('title'=>trim($_POST['lf_title']),'url'=>$url,'description'=>trim($_POST['lf_description']),'private'=>(isset($_POST['lf_private']) ? 1 : 0),
45034273
SS
1520 'linkdate'=>$linkdate,'tags'=>str_replace(',',' ',$tags));
1521 if ($link['title']=='') $link['title']=$link['url']; // If title is empty, use the URL as title.
6fc14d53
A
1522
1523 $pluginManager->executeHooks('save_link', $link);
1524
45034273 1525 $LINKSDB[$linkdate] = $link;
01e48f26 1526 $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']); // Save to disk.
45034273
SS
1527 pubsubhub();
1528
1529 // If we are called from the bookmarklet, we must close the popup:
d01c2342
A
1530 if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) {
1531 echo '<script>self.close();</script>';
1532 exit;
1533 }
1534
1535 $returnurl = !empty($_POST['returnurl']) ? escape($_POST['returnurl']): '?';
775803a0 1536 $location = generateLocation($returnurl, $_SERVER['HTTP_HOST'], array('addlink', 'post', 'edit_link'));
d01c2342 1537 $location .= '#'.smallHash($_POST['lf_linkdate']); // Scroll to the link which has been edited.
775803a0 1538 header('Location: '. $location); // After saving the link, redirect to the page the user was on.
45034273
SS
1539 exit;
1540 }
1541
1542 // -------- User clicked the "Cancel" button when editing a link.
1543 if (isset($_POST['cancel_edit']))
1544 {
ad6c27b7 1545 // If we are called from the bookmarklet, we must close the popup:
d33c5d4c 1546 if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) { echo '<script>self.close();</script>'; exit; }
45034273 1547 $returnurl = ( isset($_POST['returnurl']) ? $_POST['returnurl'] : '?' );
b342b2a4 1548 $returnurl .= '#'.smallHash($_POST['lf_linkdate']); // Scroll to the link which has been edited.
775803a0 1549 $returnurl = generateLocation($returnurl, $_SERVER['HTTP_HOST'], array('addlink', 'post', 'edit_link'));
45034273
SS
1550 header('Location: '.$returnurl); // After canceling, redirect to the page the user was on.
1551 exit;
1552 }
1553
ad6c27b7 1554 // -------- User clicked the "Delete" button when editing a link: Delete link from database.
45034273
SS
1555 if (isset($_POST['delete_link']))
1556 {
1557 if (!tokenOk($_POST['token'])) die('Wrong token.');
1558 // We do not need to ask for confirmation:
ad6c27b7 1559 // - confirmation is handled by JavaScript
45034273
SS
1560 // - we are protected from XSRF by the token.
1561 $linkdate=$_POST['lf_linkdate'];
6fc14d53
A
1562
1563 $pluginManager->executeHooks('delete_link', $LINKSDB[$linkdate]);
1564
45034273 1565 unset($LINKSDB[$linkdate]);
01e48f26 1566 $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']); // save to disk
45034273
SS
1567
1568 // If we are called from the bookmarklet, we must close the popup:
d33c5d4c 1569 if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) { echo '<script>self.close();</script>'; exit; }
d528433d 1570 // Pick where we're going to redirect
1571 // =============================================================
1572 // Basically, we can't redirect to where we were previously if it was a permalink
1573 // or an edit_link, because it would 404.
1574 // Cases:
1575 // - / : nothing in $_GET, redirect to self
1576 // - /?page : redirect to self
d33c5d4c 1577 // - /?searchterm : redirect to self (there might be other links)
d528433d 1578 // - /?searchtags : redirect to self
1579 // - /permalink : redirect to / (the link does not exist anymore)
1580 // - /?edit_link : redirect to / (the link does not exist anymore)
1581 // PHP treats the permalink as a $_GET variable, so we need to check if every condition for self
1582 // redirect is not satisfied, and only then redirect to /
1583 $location = "?";
1584 // Self redirection
775803a0
A
1585 if (count($_GET) == 0
1586 || isset($_GET['page'])
1587 || isset($_GET['searchterm'])
1588 || isset($_GET['searchtags'])
1589 ) {
d528433d 1590 if (isset($_POST['returnurl'])) {
1591 $location = $_POST['returnurl']; // Handle redirects given by the form
775803a0
A
1592 } else {
1593 $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('delete_link'));
d528433d 1594 }
1595 }
1596
1597 header('Location: ' . $location); // After deleting the link, redirect to appropriate location
45034273
SS
1598 exit;
1599 }
1600
1601 // -------- User clicked the "EDIT" button on a link: Display link edit form.
1602 if (isset($_GET['edit_link']))
1603 {
1604 $link = $LINKSDB[$_GET['edit_link']]; // Read database
1605 if (!$link) { header('Location: ?'); exit; } // Link not found in database.
6fc14d53
A
1606 $data = array(
1607 'linkcount' => count($LINKSDB),
1608 'link' => $link,
1609 'link_is_new' => false,
1610 'token' => getToken(),
1611 'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
1612 'tags' => $LINKSDB->allTags(),
1613 );
1614 $pluginManager->executeHooks('render_editlink', $data);
1615
1616 foreach ($data as $key => $value) {
1617 $PAGE->assign($key, $value);
1618 }
1619
45034273
SS
1620 $PAGE->renderPage('editlink');
1621 exit;
1622 }
1623
1624 // -------- User want to post a new link: Display link edit form.
d9d776af 1625 if (isset($_GET['post'])) {
ef591e7e 1626 $url = cleanup_url($_GET['post']);
45034273
SS
1627
1628 $link_is_new = false;
9e1724f1 1629 // Check if URL is not already in database (in this case, we will edit the existing link)
ef591e7e 1630 $link = $LINKSDB->getLinkFromUrl($url);
45034273
SS
1631 if (!$link)
1632 {
9e1724f1 1633 $link_is_new = true;
45034273 1634 $linkdate = strval(date('Ymd_His'));
9e1724f1 1635 // Get title if it was provided in URL (by the bookmarklet).
739dc243 1636 $title = empty($_GET['title']) ? '' : escape($_GET['title']);
9e1724f1 1637 // Get description if it was provided in URL (by the bookmarklet). [Bronco added that]
739dc243
A
1638 $description = empty($_GET['description']) ? '' : escape($_GET['description']);
1639 $tags = empty($_GET['tags']) ? '' : escape($_GET['tags']);
1640 $private = !empty($_GET['private']) && $_GET['private'] === "1" ? 1 : 0;
26c50346 1641 // If this is an HTTP(S) link, we try go get the page to extract the title (otherwise we will to straight to the edit form.)
ef591e7e 1642 if (empty($title) && strpos(get_url_scheme($url), 'http') !== false) {
451314eb
V
1643 // Short timeout to keep the application responsive
1644 list($headers, $data) = get_http_url($url, 4);
45034273 1645 // FIXME: Decode charset according to specified in either 1) HTTP response headers or 2) <head> in html
451314eb 1646 if (strpos($headers[0], '200 OK') !== false) {
9e1724f1
A
1647 // Look for charset in html header.
1648 preg_match('#<meta .*charset=.*>#Usi', $data, $meta);
1649
1650 // If found, extract encoding.
1651 if (!empty($meta[0])) {
1652 // Get encoding specified in header.
1653 preg_match('#charset="?(.*)"#si', $meta[0], $enc);
1654 // If charset not found, use utf-8.
1655 $html_charset = (!empty($enc[1])) ? strtolower($enc[1]) : 'utf-8';
1656 }
1657 else {
1658 $html_charset = 'utf-8';
1659 }
1660
1661 // Extract title
1662 $title = html_extract_title($data);
1663 if (!empty($title)) {
1664 // Re-encode title in utf-8 if necessary.
1665 $title = ($html_charset == 'iso-8859-1') ? utf8_encode($title) : $title;
1666 }
1667 }
45034273 1668 }
9e1724f1
A
1669 if ($url == '') {
1670 $url = '?' . smallHash($linkdate);
1671 $title = 'Note: ';
27646ca5 1672 }
9e1724f1
A
1673 $link = array(
1674 'linkdate' => $linkdate,
1675 'title' => $title,
ef591e7e 1676 'url' => $url,
9e1724f1
A
1677 'description' => $description,
1678 'tags' => $tags,
1679 'private' => $private
1680 );
45034273
SS
1681 }
1682
6fc14d53
A
1683 $data = array(
1684 'linkcount' => count($LINKSDB),
1685 'link' => $link,
1686 'link_is_new' => $link_is_new,
1687 'token' => getToken(), // XSRF protection.
1688 'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
1689 'source' => (isset($_GET['source']) ? $_GET['source'] : ''),
1690 'tags' => $LINKSDB->allTags(),
1691 );
1692 $pluginManager->executeHooks('render_editlink', $data);
1693
1694 foreach ($data as $key => $value) {
1695 $PAGE->assign($key, $value);
1696 }
1697
45034273
SS
1698 $PAGE->renderPage('editlink');
1699 exit;
1700 }
1701
1702 // -------- Export as Netscape Bookmarks HTML file.
6fc14d53 1703 if ($targetPage == Router::$PAGE_EXPORT)
45034273
SS
1704 {
1705 if (empty($_GET['what']))
1706 {
45034273
SS
1707 $PAGE->assign('linkcount',count($LINKSDB));
1708 $PAGE->renderPage('export');
1709 exit;
1710 }
1711 $exportWhat=$_GET['what'];
ad6c27b7 1712 if (!array_intersect(array('all','public','private'),array($exportWhat))) die('What are you trying to export???');
45034273
SS
1713
1714 header('Content-Type: text/html; charset=utf-8');
1715 header('Content-disposition: attachment; filename=bookmarks_'.$exportWhat.'_'.strval(date('Ymd_His')).'.html');
1716 $currentdate=date('Y/m/d H:i:s');
1717 echo <<<HTML
1718<!DOCTYPE NETSCAPE-Bookmark-file-1>
1719<!-- This is an automatically generated file.
1720 It will be read and overwritten.
1721 DO NOT EDIT! -->
1722<!-- Shaarli {$exportWhat} bookmarks export on {$currentdate} -->
1723<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8">
1724<TITLE>Bookmarks</TITLE>
1725<H1>Bookmarks</H1>
1726HTML;
1727 foreach($LINKSDB as $link)
1728 {
1729 if ($exportWhat=='all' ||
1730 ($exportWhat=='private' && $link['private']!=0) ||
1731 ($exportWhat=='public' && $link['private']==0))
1732 {
5f85fcd8
A
1733 echo '<DT><A HREF="'.$link['url'].'" ADD_DATE="'.linkdate2timestamp($link['linkdate']).'" PRIVATE="'.$link['private'].'"';
1734 if ($link['tags']!='') echo ' TAGS="'.str_replace(' ',',',$link['tags']).'"';
1735 echo '>'.$link['title']."</A>\n";
1736 if ($link['description']!='') echo '<DD>'.$link['description']."\n";
45034273
SS
1737 }
1738 }
1739 exit;
1740 }
1741
1742 // -------- User is uploading a file for import
1743 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=upload'))
1744 {
1745 // If file is too big, some form field may be missing.
1746 if (!isset($_POST['token']) || (!isset($_FILES)) || (isset($_FILES['filetoupload']['size']) && $_FILES['filetoupload']['size']==0))
1747 {
1748 $returnurl = ( empty($_SERVER['HTTP_REFERER']) ? '?' : $_SERVER['HTTP_REFERER'] );
5f85fcd8 1749 echo '<script>alert("The file you are trying to upload is probably bigger than what this webserver can accept ('.getMaxFileSize().' bytes). Please upload in smaller chunks.");document.location=\''.escape($returnurl).'\';</script>';
45034273
SS
1750 exit;
1751 }
1752 if (!tokenOk($_POST['token'])) die('Wrong token.');
1753 importFile();
1754 exit;
1755 }
1756
1757 // -------- Show upload/import dialog:
6fc14d53 1758 if ($targetPage == Router::$PAGE_IMPORT)
45034273 1759 {
45034273
SS
1760 $PAGE->assign('linkcount',count($LINKSDB));
1761 $PAGE->assign('token',getToken());
1762 $PAGE->assign('maxfilesize',getMaxFileSize());
1763 $PAGE->renderPage('import');
1764 exit;
1765 }
1766
1767 // -------- Otherwise, simply display search form and links:
6fc14d53 1768 showLinkList($PAGE, $LINKSDB);
45034273
SS
1769 exit;
1770}
1771
1772// -----------------------------------------------------------------------------------------------
1773// Process the import file form.
1774function importFile()
1775{
02ad8fb6 1776 if (!isLoggedIn()) { die('Not allowed.'); }
9f15ca9e 1777 $LINKSDB = new LinkDB(
9c8752a2 1778 $GLOBALS['config']['DATASTORE'],
02ad8fb6 1779 isLoggedIn(),
90e5bd65
A
1780 $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
1781 $GLOBALS['redirector']
9f15ca9e 1782 );
45034273
SS
1783 $filename=$_FILES['filetoupload']['name'];
1784 $filesize=$_FILES['filetoupload']['size'];
1785 $data=file_get_contents($_FILES['filetoupload']['tmp_name']);
ad6c27b7 1786 $private = (empty($_POST['private']) ? 0 : 1); // Should the links be imported as private?
1787 $overwrite = !empty($_POST['overwrite']) ; // Should the imported links overwrite existing ones?
45034273
SS
1788 $import_count=0;
1789
1790 // Sniff file type:
1791 $type='unknown';
1792 if (startsWith($data,'<!DOCTYPE NETSCAPE-Bookmark-file-1>')) $type='netscape'; // Netscape bookmark file (aka Firefox).
1793
1794 // Then import the bookmarks.
1795 if ($type=='netscape')
1796 {
1797 // This is a standard Netscape-style bookmark file.
ad6c27b7 1798 // This format is supported by all browsers (except IE, of course), also Delicious, Diigo and others.
45034273
SS
1799 foreach(explode('<DT>',$data) as $html) // explode is very fast
1800 {
1801 $link = array('linkdate'=>'','title'=>'','url'=>'','description'=>'','tags'=>'','private'=>0);
1802 $d = explode('<DD>',$html);
1803 if (startswith($d[0],'<A '))
1804 {
1805 $link['description'] = (isset($d[1]) ? html_entity_decode(trim($d[1]),ENT_QUOTES,'UTF-8') : ''); // Get description (optional)
1806 preg_match('!<A .*?>(.*?)</A>!i',$d[0],$matches); $link['title'] = (isset($matches[1]) ? trim($matches[1]) : ''); // Get title
1807 $link['title'] = html_entity_decode($link['title'],ENT_QUOTES,'UTF-8');
1808 preg_match_all('! ([A-Z_]+)=\"(.*?)"!i',$html,$matches,PREG_SET_ORDER); // Get all other attributes
1809 $raw_add_date=0;
1810 foreach($matches as $m)
1811 {
1812 $attr=$m[1]; $value=$m[2];
1813 if ($attr=='HREF') $link['url']=html_entity_decode($value,ENT_QUOTES,'UTF-8');
fc93ae1d
AA
1814 elseif ($attr=='ADD_DATE')
1815 {
1816 $raw_add_date=intval($value);
1817 if ($raw_add_date>30000000000) $raw_add_date/=1000; //If larger than year 2920, then was likely stored in milliseconds instead of seconds
1818 }
45034273
SS
1819 elseif ($attr=='PRIVATE') $link['private']=($value=='0'?0:1);
1820 elseif ($attr=='TAGS') $link['tags']=html_entity_decode(str_replace(',',' ',$value),ENT_QUOTES,'UTF-8');
1821 }
1822 if ($link['url']!='')
1823 {
1824 if ($private==1) $link['private']=1;
1825 $dblink = $LINKSDB->getLinkFromUrl($link['url']); // See if the link is already in database.
1826 if ($dblink==false)
1827 { // Link not in database, let's import it...
1828 if (empty($raw_add_date)) $raw_add_date=time(); // In case of shitty bookmark file with no ADD_DATE
1829
1830 // Make sure date/time is not already used by another link.
1831 // (Some bookmark files have several different links with the same ADD_DATE)
ad6c27b7 1832 // We increment date by 1 second until we find a date which is not used in DB.
45034273
SS
1833 // (so that links that have the same date/time are more or less kept grouped by date, but do not conflict.)
1834 while (!empty($LINKSDB[date('Ymd_His',$raw_add_date)])) { $raw_add_date++; }// Yes, I know it's ugly.
1835 $link['linkdate']=date('Ymd_His',$raw_add_date);
1836 $LINKSDB[$link['linkdate']] = $link;
1837 $import_count++;
1838 }
ad6c27b7 1839 else // Link already present in database.
45034273
SS
1840 {
1841 if ($overwrite)
1842 { // If overwrite is required, we import link data, except date/time.
1843 $link['linkdate']=$dblink['linkdate'];
1844 $LINKSDB[$link['linkdate']] = $link;
1845 $import_count++;
1846 }
1847 }
1848
1849 }
1850 }
1851 }
01e48f26 1852 $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']);
45034273 1853
fe16b01e 1854 echo '<script>alert("File '.json_encode($filename).' ('.$filesize.' bytes) was successfully processed: '.$import_count.' links imported.");document.location=\'?\';</script>';
45034273
SS
1855 }
1856 else
1857 {
fe16b01e 1858 echo '<script>alert("File '.json_encode($filename).' ('.$filesize.' bytes) has an unknown file format. Nothing was imported.");document.location=\'?\';</script>';
45034273
SS
1859 }
1860}
1861
1862// -----------------------------------------------------------------------------------------------
1863// Template for the list of links (<div id="linklist">)
1864// This function fills all the necessary fields in the $PAGE for the template 'linklist.html'
1865function buildLinkList($PAGE,$LINKSDB)
1866{
1867 // ---- Filter link database according to parameters
1868 $linksToDisplay=array();
1869 $search_type='';
1870 $search_crits='';
1871 if (isset($_GET['searchterm'])) // Fulltext search
1872 {
1873 $linksToDisplay = $LINKSDB->filterFulltext(trim($_GET['searchterm']));
5f85fcd8 1874 $search_crits=escape(trim($_GET['searchterm']));
45034273
SS
1875 $search_type='fulltext';
1876 }
1877 elseif (isset($_GET['searchtags'])) // Search by tag
1878 {
1879 $linksToDisplay = $LINKSDB->filterTags(trim($_GET['searchtags']));
5f85fcd8 1880 $search_crits=explode(' ',escape(trim($_GET['searchtags'])));
45034273
SS
1881 $search_type='tags';
1882 }
1883 elseif (isset($_SERVER['QUERY_STRING']) && preg_match('/[a-zA-Z0-9-_@]{6}(&.+?)?/',$_SERVER['QUERY_STRING'])) // Detect smallHashes in URL
1884 {
1885 $linksToDisplay = $LINKSDB->filterSmallHash(substr(trim($_SERVER["QUERY_STRING"], '/'),0,6));
1886 if (count($linksToDisplay)==0)
1887 {
1888 header($_SERVER["SERVER_PROTOCOL"]." 404 Not Found");
1889 echo '<h1>404 Not found.</h1>Oh crap. The link you are trying to reach does not exist or has been deleted.';
1dcbe296 1890 echo '<br>Would you mind <a href="?">clicking here</a>?';
45034273
SS
1891 exit;
1892 }
1893 $search_type='permalink';
1894 }
1895 else
ad6c27b7 1896 $linksToDisplay = $LINKSDB; // Otherwise, display without filtering.
bb8f712d 1897
8fa1ebd6 1898
45034273
SS
1899 // Option: Show only private links
1900 if (!empty($_SESSION['privateonly']))
1901 {
1902 $tmp = array();
1903 foreach($linksToDisplay as $linkdate=>$link)
1904 {
1905 if ($link['private']!=0) $tmp[$linkdate]=$link;
1906 }
1907 $linksToDisplay=$tmp;
1908 }
1909
1910 // ---- Handle paging.
ad6c27b7 1911 /* Can someone explain to me why you get the following error when using array_keys() on an object which implements the interface ArrayAccess???
45034273
SS
1912 "Warning: array_keys() expects parameter 1 to be array, object given in ... "
1913 If my class implements ArrayAccess, why won't array_keys() accept it ? ( $keys=array_keys($linksToDisplay); )
1914 */
ad6c27b7 1915 $keys=array(); foreach($linksToDisplay as $key=>$value) { $keys[]=$key; } // Stupid and ugly. Thanks PHP.
45034273
SS
1916
1917 // If there is only a single link, we change on-the-fly the title of the page.
1918 if (count($linksToDisplay)==1) $GLOBALS['pagetitle'] = $linksToDisplay[$keys[0]]['title'].' - '.$GLOBALS['title'];
1919
1920 // Select articles according to paging.
1921 $pagecount = ceil(count($keys)/$_SESSION['LINKS_PER_PAGE']);
1922 $pagecount = ($pagecount==0 ? 1 : $pagecount);
1923 $page=( empty($_GET['page']) ? 1 : intval($_GET['page']));
1924 $page = ( $page<1 ? 1 : $page );
1925 $page = ( $page>$pagecount ? $pagecount : $page );
1926 $i = ($page-1)*$_SESSION['LINKS_PER_PAGE']; // Start index.
1927 $end = $i+$_SESSION['LINKS_PER_PAGE'];
1928 $linkDisp=array(); // Links to display
1929 while ($i<$end && $i<count($keys))
1930 {
1931 $link = $linksToDisplay[$keys[$i]];
90e5bd65 1932 $link['description'] = format_description($link['description'], $GLOBALS['redirector']);
a5752e77 1933 $classLi = $i%2!=0 ? '' : 'publicLinkHightLight';
45034273 1934 $link['class'] = ($link['private']==0 ? $classLi : 'private');
bec18701 1935 $link['timestamp']=linkdate2timestamp($link['linkdate']);
a5752e77
A
1936 $taglist = explode(' ',$link['tags']);
1937 uasort($taglist, 'strcasecmp');
dd62b9ba 1938 $link['taglist']=$taglist;
6fc14d53 1939 $link['shorturl'] = smallHash($link['linkdate']);
b47f515a
FE
1940 if ($link["url"][0] === '?' && // Check for both signs of a note: starting with ? and 7 chars long. I doubt that you'll post any links that look like this.
1941 strlen($link["url"]) === 7) {
482d67bd 1942 $link["url"] = index_url($_SERVER) . $link["url"];
b47f515a 1943 }
d33c5d4c 1944
45034273
SS
1945 $linkDisp[$keys[$i]] = $link;
1946 $i++;
1947 }
bb8f712d 1948
45034273
SS
1949 // Compute paging navigation
1950 $searchterm= ( empty($_GET['searchterm']) ? '' : '&searchterm='.$_GET['searchterm'] );
1951 $searchtags= ( empty($_GET['searchtags']) ? '' : '&searchtags='.$_GET['searchtags'] );
1952 $paging='';
1953 $previous_page_url=''; if ($i!=count($keys)) $previous_page_url='?page='.($page+1).$searchterm.$searchtags;
1954 $next_page_url='';if ($page>1) $next_page_url='?page='.($page-1).$searchterm.$searchtags;
1955
bb8f712d
KT
1956 $token = ''; if (isLoggedIn()) $token=getToken();
1957
45034273 1958 // Fill all template fields.
6fc14d53
A
1959 $data = array(
1960 'linkcount' => count($LINKSDB),
1961 'previous_page_url' => $previous_page_url,
1962 'next_page_url' => $next_page_url,
1963 'page_current' => $page,
1964 'page_max' => $pagecount,
1965 'result_count' => count($linksToDisplay),
1966 'search_type' => $search_type,
1967 'search_crits' => $search_crits,
1968 'redirector' => empty($GLOBALS['redirector']) ? '' : $GLOBALS['redirector'], // Optional redirector URL.
1969 'token' => $token,
1970 'links' => $linkDisp,
1971 'tags' => $LINKSDB->allTags(),
1972 );
18cca483
A
1973 // FIXME! temporary fix - see #399.
1974 if (!empty($GLOBALS['pagetitle']) && count($linkDisp) == 1) {
1975 $data['pagetitle'] = $GLOBALS['pagetitle'];
1976 }
6fc14d53
A
1977
1978 $pluginManager = PluginManager::getInstance();
1979 $pluginManager->executeHooks('render_linklist', $data, array('loggedin' => isLoggedIn()));
1980
1981 foreach ($data as $key => $value) {
1982 $PAGE->assign($key, $value);
1983 }
1984
45034273
SS
1985 return;
1986}
1987
1988// Compute the thumbnail for a link.
bb8f712d 1989//
ad6c27b7 1990// With a link to the original URL.
45034273 1991// Understands various services (youtube.com...)
ad6c27b7 1992// Input: $url = URL for which the thumbnail must be found.
45034273
SS
1993// $href = if provided, this URL will be followed instead of $url
1994// Returns an associative array with thumbnail attributes (src,href,width,height,style,alt)
1995// Some of them may be missing.
1996// Return an empty array if no thumbnail available.
1997function computeThumbnail($url,$href=false)
1998{
1999 if (!$GLOBALS['config']['ENABLE_THUMBNAILS']) return array();
2000 if ($href==false) $href=$url;
2001
2002 // For most hosts, the URL of the thumbnail can be easily deduced from the URL of the link.
ad6c27b7 2003 // (e.g. http://www.youtube.com/watch?v=spVypYk4kto ---> http://img.youtube.com/vi/spVypYk4kto/default.jpg )
45034273
SS
2004 // ^^^^^^^^^^^ ^^^^^^^^^^^
2005 $domain = parse_url($url,PHP_URL_HOST);
2006 if ($domain=='youtube.com' || $domain=='www.youtube.com')
2007 {
2008 parse_str(parse_url($url,PHP_URL_QUERY), $params); // Extract video ID and get thumbnail
1a663a0f 2009 if (!empty($params['v'])) return array('src'=>'https://img.youtube.com/vi/'.$params['v'].'/default.jpg',
45034273
SS
2010 'href'=>$href,'width'=>'120','height'=>'90','alt'=>'YouTube thumbnail');
2011 }
2012 if ($domain=='youtu.be') // Youtube short links
2013 {
2014 $path = parse_url($url,PHP_URL_PATH);
1a663a0f 2015 return array('src'=>'https://img.youtube.com/vi'.$path.'/default.jpg',
bb8f712d 2016 'href'=>$href,'width'=>'120','height'=>'90','alt'=>'YouTube thumbnail');
45034273
SS
2017 }
2018 if ($domain=='pix.toile-libre.org') // pix.toile-libre.org image hosting
2019 {
2020 parse_str(parse_url($url,PHP_URL_QUERY), $params); // Extract image filename.
2021 if (!empty($params) && !empty($params['img'])) return array('src'=>'http://pix.toile-libre.org/upload/thumb/'.urlencode($params['img']),
bb8f712d
KT
2022 'href'=>$href,'style'=>'max-width:120px; max-height:150px','alt'=>'pix.toile-libre.org thumbnail');
2023 }
2024
45034273
SS
2025 if ($domain=='imgur.com')
2026 {
2027 $path = parse_url($url,PHP_URL_PATH);
2028 if (startsWith($path,'/a/')) return array(); // Thumbnails for albums are not available.
1a663a0f 2029 if (startsWith($path,'/r/')) return array('src'=>'https://i.imgur.com/'.basename($path).'s.jpg',
45034273 2030 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
1a663a0f 2031 if (startsWith($path,'/gallery/')) return array('src'=>'https://i.imgur.com'.substr($path,8).'s.jpg',
45034273
SS
2032 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
2033
1a663a0f 2034 if (substr_count($path,'/')==1) return array('src'=>'https://i.imgur.com/'.substr($path,1).'s.jpg',
45034273
SS
2035 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
2036 }
2037 if ($domain=='i.imgur.com')
2038 {
2039 $pi = pathinfo(parse_url($url,PHP_URL_PATH));
1a663a0f 2040 if (!empty($pi['filename'])) return array('src'=>'https://i.imgur.com/'.$pi['filename'].'s.jpg',
45034273
SS
2041 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
2042 }
2043 if ($domain=='dailymotion.com' || $domain=='www.dailymotion.com')
2044 {
2045 if (strpos($url,'dailymotion.com/video/')!==false)
2046 {
2047 $thumburl=str_replace('dailymotion.com/video/','dailymotion.com/thumbnail/video/',$url);
2048 return array('src'=>$thumburl,
2049 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'DailyMotion thumbnail');
2050 }
2051 }
2052 if (endsWith($domain,'.imageshack.us'))
2053 {
2054 $ext=strtolower(pathinfo($url,PATHINFO_EXTENSION));
2055 if ($ext=='jpg' || $ext=='jpeg' || $ext=='png' || $ext=='gif')
2056 {
2057 $thumburl = substr($url,0,strlen($url)-strlen($ext)).'th.'.$ext;
2058 return array('src'=>$thumburl,
2059 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'imageshack.us thumbnail');
2060 }
2061 }
2062
2063 // Some other hosts are SLOW AS HELL and usually require an extra HTTP request to get the thumbnail URL.
2064 // So we deport the thumbnail generation in order not to slow down page generation
2065 // (and we also cache the thumbnail)
2066
2067 if (!$GLOBALS['config']['ENABLE_LOCALCACHE']) return array(); // If local cache is disabled, no thumbnails for services which require the use a local cache.
2068
2069 if ($domain=='flickr.com' || endsWith($domain,'.flickr.com')
2070 || $domain=='vimeo.com'
2071 || $domain=='ted.com' || endsWith($domain,'.ted.com')
2072 || $domain=='xkcd.com' || endsWith($domain,'.xkcd.com')
2073 )
2074 {
2075 if ($domain=='vimeo.com')
ad6c27b7 2076 { // Make sure this vimeo URL points to a video (/xxx... where xxx is numeric)
45034273
SS
2077 $path = parse_url($url,PHP_URL_PATH);
2078 if (!preg_match('!/\d+.+?!',$path)) return array(); // This is not a single video URL.
2079 }
2080 if ($domain=='xkcd.com' || endsWith($domain,'.xkcd.com'))
ad6c27b7 2081 { // Make sure this URL points to a single comic (/xxx... where xxx is numeric)
45034273
SS
2082 $path = parse_url($url,PHP_URL_PATH);
2083 if (!preg_match('!/\d+.+?!',$path)) return array();
2084 }
2085 if ($domain=='ted.com' || endsWith($domain,'.ted.com'))
ad6c27b7 2086 { // Make sure this TED URL points to a video (/talks/...)
45034273
SS
2087 $path = parse_url($url,PHP_URL_PATH);
2088 if ("/talks/" !== substr($path,0,7)) return array(); // This is not a single video URL.
2089 }
2090 $sign = hash_hmac('sha256', $url, $GLOBALS['salt']); // We use the salt to sign data (it's random, secret, and specific to each installation)
482d67bd 2091 return array('src'=>index_url($_SERVER).'?do=genthumbnail&hmac='.$sign.'&url='.urlencode($url),
45034273
SS
2092 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'thumbnail');
2093 }
2094
2095 // For all other, we try to make a thumbnail of links ending with .jpg/jpeg/png/gif
2096 // Technically speaking, we should download ALL links and check their Content-Type to see if they are images.
2097 // But using the extension will do.
2098 $ext=strtolower(pathinfo($url,PATHINFO_EXTENSION));
2099 if ($ext=='jpg' || $ext=='jpeg' || $ext=='png' || $ext=='gif')
2100 {
2101 $sign = hash_hmac('sha256', $url, $GLOBALS['salt']); // We use the salt to sign data (it's random, secret, and specific to each installation)
482d67bd 2102 return array('src'=>index_url($_SERVER).'?do=genthumbnail&hmac='.$sign.'&url='.urlencode($url),
bb8f712d 2103 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'thumbnail');
45034273
SS
2104 }
2105 return array(); // No thumbnail.
2106
2107}
2108
2109
2110// Returns the HTML code to display a thumbnail for a link
2111// with a link to the original URL.
2112// Understands various services (youtube.com...)
ad6c27b7 2113// Input: $url = URL for which the thumbnail must be found.
45034273
SS
2114// $href = if provided, this URL will be followed instead of $url
2115// Returns '' if no thumbnail available.
2116function thumbnail($url,$href=false)
2117{
2118 $t = computeThumbnail($url,$href);
2119 if (count($t)==0) return ''; // Empty array = no thumbnail for this URL.
bb8f712d 2120
5f85fcd8
A
2121 $html='<a href="'.escape($t['href']).'"><img src="'.escape($t['src']).'"';
2122 if (!empty($t['width'])) $html.=' width="'.escape($t['width']).'"';
2123 if (!empty($t['height'])) $html.=' height="'.escape($t['height']).'"';
2124 if (!empty($t['style'])) $html.=' style="'.escape($t['style']).'"';
2125 if (!empty($t['alt'])) $html.=' alt="'.escape($t['alt']).'"';
45034273
SS
2126 $html.='></a>';
2127 return $html;
2128}
2129
45034273
SS
2130// Returns the HTML code to display a thumbnail for a link
2131// for the picture wall (using lazy image loading)
2132// Understands various services (youtube.com...)
ad6c27b7 2133// Input: $url = URL for which the thumbnail must be found.
45034273
SS
2134// $href = if provided, this URL will be followed instead of $url
2135// Returns '' if no thumbnail available.
2136function lazyThumbnail($url,$href=false)
2137{
bb8f712d 2138 $t = computeThumbnail($url,$href);
45034273
SS
2139 if (count($t)==0) return ''; // Empty array = no thumbnail for this URL.
2140
5f85fcd8 2141 $html='<a href="'.escape($t['href']).'">';
bb8f712d 2142
34047d23 2143 // Lazy image
5f85fcd8 2144 $html.='<img class="b-lazy" src="#" data-src="'.escape($t['src']).'"';
858c5c2b 2145
5f85fcd8
A
2146 if (!empty($t['width'])) $html.=' width="'.escape($t['width']).'"';
2147 if (!empty($t['height'])) $html.=' height="'.escape($t['height']).'"';
2148 if (!empty($t['style'])) $html.=' style="'.escape($t['style']).'"';
2149 if (!empty($t['alt'])) $html.=' alt="'.escape($t['alt']).'"';
45034273 2150 $html.='>';
bb8f712d 2151
ad6c27b7 2152 // No-JavaScript fallback.
5f85fcd8
A
2153 $html.='<noscript><img src="'.escape($t['src']).'"';
2154 if (!empty($t['width'])) $html.=' width="'.escape($t['width']).'"';
2155 if (!empty($t['height'])) $html.=' height="'.escape($t['height']).'"';
2156 if (!empty($t['style'])) $html.=' style="'.escape($t['style']).'"';
2157 if (!empty($t['alt'])) $html.=' alt="'.escape($t['alt']).'"';
45034273 2158 $html.='></noscript></a>';
bb8f712d 2159
45034273
SS
2160 return $html;
2161}
2162
2163
2164// -----------------------------------------------------------------------------------------------
2165// Installation
2166// This function should NEVER be called if the file data/config.php exists.
2167function install()
2168{
2169 // On free.fr host, make sure the /sessions directory exists, otherwise login will not work.
f6a6ca0a 2170 if (endsWith($_SERVER['HTTP_HOST'],'.free.fr') && !is_dir($_SERVER['DOCUMENT_ROOT'].'/sessions')) mkdir($_SERVER['DOCUMENT_ROOT'].'/sessions',0705);
45034273 2171
f37664a2
SS
2172
2173 // This part makes sure sessions works correctly.
2174 // (Because on some hosts, session.save_path may not be set correctly,
2175 // or we may not have write access to it.)
2176 if (isset($_GET['test_session']) && ( !isset($_SESSION) || !isset($_SESSION['session_tested']) || $_SESSION['session_tested']!='Working'))
2177 { // Step 2: Check if data in session is correct.
2178 echo '<pre>Sessions do not seem to work correctly on your server.<br>';
2179 echo 'Make sure the variable session.save_path is set correctly in your php config, and that you have write access to it.<br>';
01ec1791 2180 echo 'It currently points to '.session_save_path().'<br>';
2181 echo 'Check that the hostname used to access Shaarli contains a dot. On some browsers, accessing your server via a hostname like \'localhost\' or any custom hostname without a dot causes cookie storage to fail. We recommend accessing your server via it\'s IP address or Fully Qualified Domain Name.<br>';
2182 echo '<br><a href="?">Click to try again.</a></pre>';
f37664a2
SS
2183 die;
2184 }
2185 if (!isset($_SESSION['session_tested']))
2186 { // Step 1 : Try to store data in session and reload page.
2187 $_SESSION['session_tested'] = 'Working'; // Try to set a variable in session.
482d67bd 2188 header('Location: '.index_url($_SERVER).'?test_session'); // Redirect to check stored data.
f37664a2
SS
2189 }
2190 if (isset($_GET['test_session']))
ad6c27b7 2191 { // Step 3: Sessions are OK. Remove test parameter from URL.
482d67bd 2192 header('Location: '.index_url($_SERVER));
f37664a2
SS
2193 }
2194
2195
45034273
SS
2196 if (!empty($_POST['setlogin']) && !empty($_POST['setpassword']))
2197 {
2198 $tz = 'UTC';
d1e2f8e5
V
2199 if (!empty($_POST['continent']) && !empty($_POST['city'])) {
2200 if (isTimeZoneValid($_POST['continent'], $_POST['city'])) {
45034273 2201 $tz = $_POST['continent'].'/'.$_POST['city'];
d1e2f8e5
V
2202 }
2203 }
45034273
SS
2204 $GLOBALS['timezone'] = $tz;
2205 // Everything is ok, let's create config file.
2206 $GLOBALS['login'] = $_POST['setlogin'];
2207 $GLOBALS['salt'] = sha1(uniqid('',true).'_'.mt_rand()); // Salt renders rainbow-tables attacks useless.
2208 $GLOBALS['hash'] = sha1($_POST['setpassword'].$GLOBALS['login'].$GLOBALS['salt']);
482d67bd 2209 $GLOBALS['title'] = (empty($_POST['title']) ? 'Shared links on '.escape(index_url($_SERVER)) : $_POST['title'] );
329e0768 2210 $GLOBALS['config']['ENABLE_UPDATECHECK'] = !empty($_POST['updateCheck']);
dd484b90
A
2211 try {
2212 writeConfig($GLOBALS, isLoggedIn());
2213 }
2214 catch(Exception $e) {
2215 error_log(
2216 'ERROR while writing config file after installation.' . PHP_EOL .
2217 $e->getMessage()
2218 );
2219
2220 // TODO: do not handle exceptions/errors in JS.
2221 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?\';</script>';
2222 exit;
2223 }
fe16b01e 2224 echo '<script>alert("Shaarli is now configured. Please enter your login/password and start shaaring your links!");document.location=\'?do=login\';</script>';
45034273
SS
2225 exit;
2226 }
2227
2228 // Display config form:
d1e2f8e5
V
2229 list($timezone_form, $timezone_js) = generateTimeZoneForm();
2230 $timezone_html = '';
2231 if ($timezone_form != '') {
2232 $timezone_html = '<tr><td><b>Timezone:</b></td><td>'.$timezone_form.'</td></tr>';
2233 }
bb8f712d 2234
45034273
SS
2235 $PAGE = new pageBuilder;
2236 $PAGE->assign('timezone_html',$timezone_html);
2237 $PAGE->assign('timezone_js',$timezone_js);
2238 $PAGE->renderPage('install');
2239 exit;
2240}
2241
ad6c27b7 2242/* Because some f*cking services like flickr require an extra HTTP request to get the thumbnail URL,
45034273 2243 I have deported the thumbnail URL code generation here, otherwise this would slow down page generation.
ad6c27b7 2244 The following function takes the URL a link (e.g. a flickr page) and return the proper thumbnail.
2245 This function is called by passing the URL:
45034273 2246 http://mywebsite.com/shaarli/?do=genthumbnail&hmac=[HMAC]&url=[URL]
ad6c27b7 2247 [URL] is the URL of the link (e.g. a flickr page)
45034273
SS
2248 [HMAC] is the signature for the [URL] (so that these URL cannot be forged).
2249 The function below will fetch the image from the webservice and store it in the cache.
2250*/
2251function genThumbnail()
2252{
2253 // Make sure the parameters in the URL were generated by us.
2254 $sign = hash_hmac('sha256', $_GET['url'], $GLOBALS['salt']);
ad6c27b7 2255 if ($sign!=$_GET['hmac']) die('Naughty boy!');
45034273
SS
2256
2257 // Let's see if we don't already have the image for this URL in the cache.
2258 $thumbname=hash('sha1',$_GET['url']).'.jpg';
2259 if (is_file($GLOBALS['config']['CACHEDIR'].'/'.$thumbname))
2260 { // We have the thumbnail, just serve it:
2261 header('Content-Type: image/jpeg');
2262 echo file_get_contents($GLOBALS['config']['CACHEDIR'].'/'.$thumbname);
2263 return;
2264 }
2265 // We may also serve a blank image (if service did not respond)
2266 $blankname=hash('sha1',$_GET['url']).'.gif';
2267 if (is_file($GLOBALS['config']['CACHEDIR'].'/'.$blankname))
2268 {
2269 header('Content-Type: image/gif');
2270 echo file_get_contents($GLOBALS['config']['CACHEDIR'].'/'.$blankname);
2271 return;
2272 }
2273
2274 // Otherwise, generate the thumbnail.
2275 $url = $_GET['url'];
2276 $domain = parse_url($url,PHP_URL_HOST);
2277
2278 if ($domain=='flickr.com' || endsWith($domain,'.flickr.com'))
2279 {
ad6c27b7 2280 // Crude replacement to handle new flickr domain policy (They prefer www. now)
45034273
SS
2281 $url = str_replace('http://flickr.com/','http://www.flickr.com/',$url);
2282
2283 // Is this a link to an image, or to a flickr page ?
2284 $imageurl='';
2285 if (endswith(parse_url($url,PHP_URL_PATH),'.jpg'))
ad6c27b7 2286 { // This is a direct link to an image. e.g. http://farm1.staticflickr.com/5/5921913_ac83ed27bd_o.jpg
45034273
SS
2287 preg_match('!(http://farm\d+\.staticflickr\.com/\d+/\d+_\w+_)\w.jpg!',$url,$matches);
2288 if (!empty($matches[1])) $imageurl=$matches[1].'m.jpg';
2289 }
ad6c27b7 2290 else // This is a flickr page (html)
45034273 2291 {
451314eb
V
2292 // Get the flickr html page.
2293 list($headers, $data) = get_http_url($url, 20);
2294 if (strpos($headers[0], '200 OK') !== false)
45034273 2295 {
ad6c27b7 2296 // flickr now nicely provides the URL of the thumbnail in each flickr page.
45034273
SS
2297 preg_match('!<link rel=\"image_src\" href=\"(.+?)\"!',$data,$matches);
2298 if (!empty($matches[1])) $imageurl=$matches[1];
2299
2300 // In albums (and some other pages), the link rel="image_src" is not provided,
2301 // but flickr provides:
2302 // <meta property="og:image" content="http://farm4.staticflickr.com/3398/3239339068_25d13535ff_z.jpg" />
2303 if ($imageurl=='')
2304 {
2305 preg_match('!<meta property=\"og:image\" content=\"(.+?)\"!',$data,$matches);
2306 if (!empty($matches[1])) $imageurl=$matches[1];
2307 }
2308 }
2309 }
2310
2311 if ($imageurl!='')
2312 { // Let's download the image.
451314eb
V
2313 // Image is 240x120, so 10 seconds to download should be enough.
2314 list($headers, $data) = get_http_url($imageurl, 10);
2315 if (strpos($headers[0], '200 OK') !== false) {
45034273
SS
2316 file_put_contents($GLOBALS['config']['CACHEDIR'].'/'.$thumbname,$data); // Save image to cache.
2317 header('Content-Type: image/jpeg');
2318 echo $data;
2319 return;
2320 }
2321 }
2322 }
2323
2324 elseif ($domain=='vimeo.com' )
2325 {
2326 // This is more complex: we have to perform a HTTP request, then parse the result.
ad6c27b7 2327 // Maybe we should deport this to JavaScript ? Example: http://stackoverflow.com/questions/1361149/get-img-thumbnails-from-vimeo/4285098#4285098
45034273 2328 $vid = substr(parse_url($url,PHP_URL_PATH),1);
451314eb
V
2329 list($headers, $data) = get_http_url('https://vimeo.com/api/v2/video/'.escape($vid).'.php', 5);
2330 if (strpos($headers[0], '200 OK') !== false) {
45034273
SS
2331 $t = unserialize($data);
2332 $imageurl = $t[0]['thumbnail_medium'];
2333 // Then we download the image and serve it to our client.
451314eb
V
2334 list($headers, $data) = get_http_url($imageurl, 10);
2335 if (strpos($headers[0], '200 OK') !== false) {
45034273
SS
2336 file_put_contents($GLOBALS['config']['CACHEDIR'].'/'.$thumbname,$data); // Save image to cache.
2337 header('Content-Type: image/jpeg');
2338 echo $data;
2339 return;
2340 }
2341 }
2342 }
2343
2344 elseif ($domain=='ted.com' || endsWith($domain,'.ted.com'))
2345 {
2346 // The thumbnail for TED talks is located in the <link rel="image_src" [...]> tag on that page
2347 // http://www.ted.com/talks/mikko_hypponen_fighting_viruses_defending_the_net.html
2348 // <link rel="image_src" href="http://images.ted.com/images/ted/28bced335898ba54d4441809c5b1112ffaf36781_389x292.jpg" />
451314eb
V
2349 list($headers, $data) = get_http_url($url, 5);
2350 if (strpos($headers[0], '200 OK') !== false) {
45034273
SS
2351 // Extract the link to the thumbnail
2352 preg_match('!link rel="image_src" href="(http://images.ted.com/images/ted/.+_\d+x\d+\.jpg)"!',$data,$matches);
2353 if (!empty($matches[1]))
2354 { // Let's download the image.
2355 $imageurl=$matches[1];
451314eb
V
2356 // No control on image size, so wait long enough
2357 list($headers, $data) = get_http_url($imageurl, 20);
2358 if (strpos($headers[0], '200 OK') !== false) {
45034273
SS
2359 $filepath=$GLOBALS['config']['CACHEDIR'].'/'.$thumbname;
2360 file_put_contents($filepath,$data); // Save image to cache.
2361 if (resizeImage($filepath))
2362 {
2363 header('Content-Type: image/jpeg');
2364 echo file_get_contents($filepath);
2365 return;
2366 }
2367 }
2368 }
2369 }
2370 }
bb8f712d 2371
45034273
SS
2372 elseif ($domain=='xkcd.com' || endsWith($domain,'.xkcd.com'))
2373 {
2374 // There is no thumbnail available for xkcd comics, so download the whole image and resize it.
2375 // http://xkcd.com/327/
2376 // <img src="http://imgs.xkcd.com/comics/exploits_of_a_mom.png" title="<BLABLA>" alt="<BLABLA>" />
451314eb
V
2377 list($headers, $data) = get_http_url($url, 5);
2378 if (strpos($headers[0], '200 OK') !== false) {
45034273
SS
2379 // Extract the link to the thumbnail
2380 preg_match('!<img src="(http://imgs.xkcd.com/comics/.*)" title="[^s]!',$data,$matches);
2381 if (!empty($matches[1]))
2382 { // Let's download the image.
2383 $imageurl=$matches[1];
451314eb
V
2384 // No control on image size, so wait long enough
2385 list($headers, $data) = get_http_url($imageurl, 20);
2386 if (strpos($headers[0], '200 OK') !== false) {
45034273
SS
2387 $filepath=$GLOBALS['config']['CACHEDIR'].'/'.$thumbname;
2388 file_put_contents($filepath,$data); // Save image to cache.
2389 if (resizeImage($filepath))
2390 {
2391 header('Content-Type: image/jpeg');
2392 echo file_get_contents($filepath);
2393 return;
2394 }
2395 }
2396 }
2397 }
bb8f712d 2398 }
45034273
SS
2399
2400 else
2401 {
2402 // For all other domains, we try to download the image and make a thumbnail.
451314eb
V
2403 // We allow 30 seconds max to download (and downloads are limited to 4 Mb)
2404 list($headers, $data) = get_http_url($url, 30);
2405 if (strpos($headers[0], '200 OK') !== false) {
45034273
SS
2406 $filepath=$GLOBALS['config']['CACHEDIR'].'/'.$thumbname;
2407 file_put_contents($filepath,$data); // Save image to cache.
2408 if (resizeImage($filepath))
2409 {
2410 header('Content-Type: image/jpeg');
2411 echo file_get_contents($filepath);
2412 return;
2413 }
2414 }
2415 }
2416
2417
2418 // Otherwise, return an empty image (8x8 transparent gif)
2419 $blankgif = base64_decode('R0lGODlhCAAIAIAAAP///////yH5BAEKAAEALAAAAAAIAAgAAAIHjI+py+1dAAA7');
2420 file_put_contents($GLOBALS['config']['CACHEDIR'].'/'.$blankname,$blankgif); // Also put something in cache so that this URL is not requested twice.
2421 header('Content-Type: image/gif');
2422 echo $blankgif;
2423}
2424
2425// Make a thumbnail of the image (to width: 120 pixels)
2426// Returns true if success, false otherwise.
2427function resizeImage($filepath)
2428{
2429 if (!function_exists('imagecreatefromjpeg')) return false; // GD not present: no thumbnail possible.
2430
2431 // Trick: some stupid people rename GIF as JPEG... or else.
2432 // So we really try to open each image type whatever the extension is.
2433 $header=file_get_contents($filepath,false,NULL,0,256); // Read first 256 bytes and try to sniff file type.
2434 $im=false;
2435 $i=strpos($header,'GIF8'); if (($i!==false) && ($i==0)) $im = imagecreatefromgif($filepath); // Well this is crude, but it should be enough.
2436 $i=strpos($header,'PNG'); if (($i!==false) && ($i==1)) $im = imagecreatefrompng($filepath);
2437 $i=strpos($header,'JFIF'); if ($i!==false) $im = imagecreatefromjpeg($filepath);
2438 if (!$im) return false; // Unable to open image (corrupted or not an image)
2439 $w = imagesx($im);
2440 $h = imagesy($im);
2441 $ystart = 0; $yheight=$h;
2442 if ($h>$w) { $ystart= ($h/2)-($w/2); $yheight=$w/2; }
2443 $nw = 120; // Desired width
2444 $nh = min(floor(($h*$nw)/$w),120); // Compute new width/height, but maximum 120 pixels height.
2445 // Resize image:
2446 $im2 = imagecreatetruecolor($nw,$nh);
2447 imagecopyresampled($im2, $im, 0, 0, 0, $ystart, $nw, $nh, $w, $yheight);
2448 imageinterlace($im2,true); // For progressive JPEG.
2449 $tempname=$filepath.'_TEMP.jpg';
2450 imagejpeg($im2, $tempname, 90);
2451 imagedestroy($im);
2452 imagedestroy($im2);
9e820906 2453 unlink($filepath);
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2454 rename($tempname,$filepath); // Overwrite original picture with thumbnail.
2455 return true;
2456}
2457
dd484b90
A
2458try {
2459 mergeDeprecatedConfig($GLOBALS, isLoggedIn());
2460} catch(Exception $e) {
2461 error_log(
2462 'ERROR while merging deprecated options.php file.' . PHP_EOL .
2463 $e->getMessage()
2464 );
2465}
2466
45034273
SS
2467if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=genthumbnail')) { genThumbnail(); exit; } // Thumbnail generation/cache does not need the link database.
2468if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=rss')) { showRSS(); exit; }
2469if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=atom')) { showATOM(); exit; }
2470if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=dailyrss')) { showDailyRSS(); exit; }
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SS
2471if (!isset($_SESSION['LINKS_PER_PAGE'])) $_SESSION['LINKS_PER_PAGE']=$GLOBALS['config']['LINKS_PER_PAGE'];
2472renderPage();
03545ef6 2473?>