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Merge pull request #254 from virtualtam/test/linkdb/datastore
[github/shaarli/Shaarli.git] / index.php
... / ...
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1<?php
2// Shaarli 0.0.45beta - Shaare your links...
3// The personal, minimalist, super-fast, no-database Delicious clone. By sebsauvage.net
4// http://sebsauvage.net/wiki/doku.php?id=php:shaarli
5// Licence: http://www.opensource.org/licenses/zlib-license.php
6// Requires: PHP 5.1.x (but autocomplete fields will only work if you have PHP 5.2.x)
7// -----------------------------------------------------------------------------------------------
8// NEVER TRUST IN PHP.INI
9// Some hosts do not define a default timezone in php.ini,
10// so we have to do this for avoid the strict standard error.
11date_default_timezone_set('UTC');
12
13// -----------------------------------------------------------------------------------------------
14// Hardcoded parameter (These parameters can be overwritten by creating the file /data/options.php)
15$GLOBALS['config']['DATADIR'] = 'data'; // Data subdirectory
16$GLOBALS['config']['CONFIG_FILE'] = $GLOBALS['config']['DATADIR'].'/config.php'; // Configuration file (user login/password)
17$GLOBALS['config']['DATASTORE'] = $GLOBALS['config']['DATADIR'].'/datastore.php'; // Data storage file.
18$GLOBALS['config']['LINKS_PER_PAGE'] = 20; // Default links per page.
19$GLOBALS['config']['IPBANS_FILENAME'] = $GLOBALS['config']['DATADIR'].'/ipbans.php'; // File storage for failures and bans.
20$GLOBALS['config']['BAN_AFTER'] = 4; // Ban IP after this many failures.
21$GLOBALS['config']['BAN_DURATION'] = 1800; // Ban duration for IP address after login failures (in seconds) (1800 sec. = 30 minutes)
22$GLOBALS['config']['OPEN_SHAARLI'] = false; // If true, anyone can add/edit/delete links without having to login
23$GLOBALS['config']['HIDE_TIMESTAMPS'] = false; // If true, the moment when links were saved are not shown to users that are not logged in.
24$GLOBALS['config']['SHOW_ATOM'] = false; // If true, an extra "ATOM feed" button will be displayed in the toolbar
25$GLOBALS['config']['ENABLE_THUMBNAILS'] = true; // Enable thumbnails in links.
26$GLOBALS['config']['CACHEDIR'] = 'cache'; // Cache directory for thumbnails for SLOW services (like flickr)
27$GLOBALS['config']['PAGECACHE'] = 'pagecache'; // Page cache directory.
28$GLOBALS['config']['ENABLE_LOCALCACHE'] = true; // Enable Shaarli to store thumbnail in a local cache. Disable to reduce web space usage.
29$GLOBALS['config']['PUBSUBHUB_URL'] = ''; // PubSubHubbub support. Put an empty string to disable, or put your hub url here to enable.
30$GLOBALS['config']['RAINTPL_TMP'] = 'tmp/' ; // Raintpl cache directory (keep the trailing slash!)
31$GLOBALS['config']['RAINTPL_TPL'] = 'tpl/' ; // Raintpl template directory (keep the trailing slash!)
32$GLOBALS['config']['UPDATECHECK_FILENAME'] = $GLOBALS['config']['DATADIR'].'/lastupdatecheck.txt'; // For updates check of Shaarli.
33$GLOBALS['config']['UPDATECHECK_INTERVAL'] = 86400 ; // Updates check frequency for Shaarli. 86400 seconds=24 hours
34 // Note: You must have publisher.php in the same directory as Shaarli index.php
35$GLOBALS['config']['ARCHIVE_ORG'] = false; // For each link, add a link to an archived version on archive.org
36$GLOBALS['config']['ENABLE_RSS_PERMALINKS'] = true; // Enable RSS permalinks by default. This corresponds to the default behavior of shaarli before this was added as an option.
37$GLOBALS['config']['HIDE_PUBLIC_LINKS'] = false;
38// -----------------------------------------------------------------------------------------------
39// You should not touch below (or at your own risks!)
40// Optional config file.
41if (is_file($GLOBALS['config']['DATADIR'].'/options.php')) require($GLOBALS['config']['DATADIR'].'/options.php');
42
43define('shaarli_version','0.0.45beta');
44// http://server.com/x/shaarli --> /shaarli/
45define('WEB_PATH', substr($_SERVER["REQUEST_URI"], 0, 1+strrpos($_SERVER["REQUEST_URI"], '/', 0)));
46
47// Force cookie path (but do not change lifetime)
48$cookie=session_get_cookie_params();
49$cookiedir = ''; if(dirname($_SERVER['SCRIPT_NAME'])!='/') $cookiedir=dirname($_SERVER["SCRIPT_NAME"]).'/';
50session_set_cookie_params($cookie['lifetime'],$cookiedir,$_SERVER['SERVER_NAME']); // Set default cookie expiration and path.
51
52// Set session parameters on server side.
53define('INACTIVITY_TIMEOUT',3600); // (in seconds). If the user does not access any page within this time, his/her session is considered expired.
54ini_set('session.use_cookies', 1); // Use cookies to store session.
55ini_set('session.use_only_cookies', 1); // Force cookies for session (phpsessionID forbidden in URL).
56ini_set('session.use_trans_sid', false); // Prevent PHP form using sessionID in URL if cookies are disabled.
57session_name('shaarli');
58if (session_id() == '') session_start(); // Start session if needed (Some server auto-start sessions).
59
60// PHP Settings
61ini_set('max_input_time','60'); // High execution time in case of problematic imports/exports.
62ini_set('memory_limit', '128M'); // Try to set max upload file size and read (May not work on some hosts).
63ini_set('post_max_size', '16M');
64ini_set('upload_max_filesize', '16M');
65checkphpversion();
66error_reporting(E_ALL^E_WARNING); // See all error except warnings.
67//error_reporting(-1); // See all errors (for debugging only)
68
69// Shaarli library
70require_once 'application/LinkDB.php';
71require_once 'application/Utils.php';
72
73include "inc/rain.tpl.class.php"; //include Rain TPL
74raintpl::$tpl_dir = $GLOBALS['config']['RAINTPL_TPL']; // template directory
75raintpl::$cache_dir = $GLOBALS['config']['RAINTPL_TMP']; // cache directory
76
77ob_start(); // Output buffering for the page cache.
78
79
80// In case stupid admin has left magic_quotes enabled in php.ini:
81if (get_magic_quotes_gpc())
82{
83 function stripslashes_deep($value) { $value = is_array($value) ? array_map('stripslashes_deep', $value) : stripslashes($value); return $value; }
84 $_POST = array_map('stripslashes_deep', $_POST);
85 $_GET = array_map('stripslashes_deep', $_GET);
86 $_COOKIE = array_map('stripslashes_deep', $_COOKIE);
87}
88
89// Prevent caching on client side or proxy: (yes, it's ugly)
90header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
91header("Cache-Control: no-store, no-cache, must-revalidate");
92header("Cache-Control: post-check=0, pre-check=0", false);
93header("Pragma: no-cache");
94
95// Directories creations (Note that your web host may require different rights than 705.)
96if (!is_writable(realpath(dirname(__FILE__)))) die('<pre>ERROR: Shaarli does not have the right to write in its own directory.</pre>');
97
98// Handling of old config file which do not have the new parameters.
99if (empty($GLOBALS['title'])) $GLOBALS['title']='Shared links on '.escape(indexUrl());
100if (empty($GLOBALS['timezone'])) $GLOBALS['timezone']=date_default_timezone_get();
101if (empty($GLOBALS['redirector'])) $GLOBALS['redirector']='';
102if (empty($GLOBALS['disablesessionprotection'])) $GLOBALS['disablesessionprotection']=false;
103if (empty($GLOBALS['disablejquery'])) $GLOBALS['disablejquery']=false;
104if (empty($GLOBALS['privateLinkByDefault'])) $GLOBALS['privateLinkByDefault']=false;
105if (empty($GLOBALS['titleLink'])) $GLOBALS['titleLink']='?';
106// I really need to rewrite Shaarli with a proper configuation manager.
107
108// Run config screen if first run:
109if (!is_file($GLOBALS['config']['CONFIG_FILE'])) install();
110
111require $GLOBALS['config']['CONFIG_FILE']; // Read login/password hash into $GLOBALS.
112$GLOBALS['title'] = !empty($GLOBALS['title']) ? escape($GLOBALS['title']) : '';
113$GLOBALS['titleLink'] = !empty($GLOBALS['titleLink']) ? escape($GLOBALS['titleLink']) : '';
114$GLOBALS['redirector'] = !empty($GLOBALS['redirector']) ? escape($GLOBALS['redirector']) : '';
115
116// a token depending of deployment salt, user password, and the current ip
117define('STAY_SIGNED_IN_TOKEN', sha1($GLOBALS['hash'].$_SERVER["REMOTE_ADDR"].$GLOBALS['salt']));
118
119autoLocale(); // Sniff browser language and set date format accordingly.
120header('Content-Type: text/html; charset=utf-8'); // We use UTF-8 for proper international characters handling.
121
122//==================================================================================================
123// Checking session state (i.e. is the user still logged in)
124//==================================================================================================
125
126function setup_login_state() {
127 $userIsLoggedIn = false; // By default, we do not consider the user as logged in;
128 $loginFailure = false; // If set to true, every attempt to authenticate the user will fail. This indicates that an important condition isn't met.
129 if ($GLOBALS['config']['OPEN_SHAARLI']) {
130 $userIsLoggedIn = true;
131 }
132 if (!isset($GLOBALS['login'])) {
133 $userIsLoggedIn = false; // Shaarli is not configured yet.
134 $loginFailure = true;
135 }
136 if (isset($_COOKIE['shaarli_staySignedIn']) &&
137 $_COOKIE['shaarli_staySignedIn']===STAY_SIGNED_IN_TOKEN &&
138 !$loginFailure)
139 {
140 fillSessionInfo();
141 $userIsLoggedIn = true;
142 }
143 // If session does not exist on server side, or IP address has changed, or session has expired, logout.
144 if (empty($_SESSION['uid']) ||
145 ($GLOBALS['disablesessionprotection']==false && $_SESSION['ip']!=allIPs()) ||
146 time() >= $_SESSION['expires_on'])
147 {
148 logout();
149 $userIsLoggedIn = false;
150 $loginFailure = true;
151 }
152 if (!empty($_SESSION['longlastingsession'])) {
153 $_SESSION['expires_on']=time()+$_SESSION['longlastingsession']; // In case of "Stay signed in" checked.
154 }
155 else {
156 $_SESSION['expires_on']=time()+INACTIVITY_TIMEOUT; // Standard session expiration date.
157 }
158 if (!$loginFailure) {
159 $userIsLoggedIn = true;
160 }
161
162 return $userIsLoggedIn;
163}
164//==================================================================================================
165$userIsLoggedIn = setup_login_state();
166//==================================================================================================
167//==================================================================================================
168
169// Check PHP version
170function checkphpversion()
171{
172 if (version_compare(PHP_VERSION, '5.1.0') < 0)
173 {
174 header('Content-Type: text/plain; charset=utf-8');
175 echo 'Your PHP version is obsolete! Shaarli requires at least php 5.1.0, and thus cannot run. Sorry. Your PHP version has known security vulnerabilities and should be updated as soon as possible.';
176 exit;
177 }
178}
179
180// Checks if an update is available for Shaarli.
181// (at most once a day, and only for registered user.)
182// Output: '' = no new version.
183// other= the available version.
184function checkUpdate()
185{
186 if (!isLoggedIn()) return ''; // Do not check versions for visitors.
187 if (empty($GLOBALS['config']['ENABLE_UPDATECHECK'])) return ''; // Do not check if the user doesn't want to.
188
189 // Get latest version number at most once a day.
190 if (!is_file($GLOBALS['config']['UPDATECHECK_FILENAME']) || (filemtime($GLOBALS['config']['UPDATECHECK_FILENAME'])<time()-($GLOBALS['config']['UPDATECHECK_INTERVAL'])))
191 {
192 $version=shaarli_version;
193 list($httpstatus,$headers,$data) = getHTTP('https://raw.githubusercontent.com/shaarli/Shaarli/master/shaarli_version.php',2);
194 if (strpos($httpstatus,'200 OK')!==false) $version=str_replace(' */ ?>','',str_replace('<?php /* ','',$data));
195 // If failed, never mind. We don't want to bother the user with that.
196 file_put_contents($GLOBALS['config']['UPDATECHECK_FILENAME'],$version); // touch file date
197 }
198 // Compare versions:
199 $newestversion=file_get_contents($GLOBALS['config']['UPDATECHECK_FILENAME']);
200 if (version_compare($newestversion,shaarli_version)==1) return $newestversion;
201 return '';
202}
203
204
205// -----------------------------------------------------------------------------------------------
206// Simple cache system (mainly for the RSS/ATOM feeds).
207
208class pageCache
209{
210 private $url; // Full URL of the page to cache (typically the value returned by pageUrl())
211 private $shouldBeCached; // boolean: Should this url be cached?
212 private $filename; // Name of the cache file for this url.
213
214 /*
215 $url = URL (typically the value returned by pageUrl())
216 $shouldBeCached = boolean. If false, the cache will be disabled.
217 */
218 public function __construct($url,$shouldBeCached)
219 {
220 $this->url = $url;
221 $this->filename = $GLOBALS['config']['PAGECACHE'].'/'.sha1($url).'.cache';
222 $this->shouldBeCached = $shouldBeCached;
223 }
224
225 // If the page should be cached and a cached version exists,
226 // returns the cached version (otherwise, return null).
227 public function cachedVersion()
228 {
229 if (!$this->shouldBeCached) return null;
230 if (is_file($this->filename)) { return file_get_contents($this->filename); exit; }
231 return null;
232 }
233
234 // Put a page in the cache.
235 public function cache($page)
236 {
237 if (!$this->shouldBeCached) return;
238 file_put_contents($this->filename,$page);
239 }
240
241 // Purge the whole cache.
242 // (call with pageCache::purgeCache())
243 public static function purgeCache()
244 {
245 if (is_dir($GLOBALS['config']['PAGECACHE']))
246 {
247 $handler = opendir($GLOBALS['config']['PAGECACHE']);
248 if ($handler!==false)
249 {
250 while (($filename = readdir($handler))!==false)
251 {
252 if (endsWith($filename,'.cache')) { unlink($GLOBALS['config']['PAGECACHE'].'/'.$filename); }
253 }
254 closedir($handler);
255 }
256 }
257 }
258
259}
260
261
262// -----------------------------------------------------------------------------------------------
263// Log to text file
264function logm($message)
265{
266 $t = strval(date('Y/m/d_H:i:s')).' - '.$_SERVER["REMOTE_ADDR"].' - '.strval($message)."\n";
267 file_put_contents($GLOBALS['config']['DATADIR'].'/log.txt',$t,FILE_APPEND);
268}
269
270// In a string, converts URLs to clickable links.
271// Function inspired from http://www.php.net/manual/en/function.preg-replace.php#85722
272function text2clickable($url)
273{
274 $redir = empty($GLOBALS['redirector']) ? '' : $GLOBALS['redirector'];
275 return preg_replace('!(((?:https?|ftp|file)://|apt:|magnet:)\S+[[:alnum:]]/?)!si','<a href="'.$redir.'$1" rel="nofollow">$1</a>',$url);
276}
277
278// This function inserts &nbsp; where relevant so that multiple spaces are properly displayed in HTML
279// even in the absence of <pre> (This is used in description to keep text formatting)
280function keepMultipleSpaces($text)
281{
282 return str_replace(' ',' &nbsp;',$text);
283
284}
285// ------------------------------------------------------------------------------------------
286// Sniff browser language to display dates in the right format automatically.
287// (Note that is may not work on your server if the corresponding local is not installed.)
288function autoLocale()
289{
290 $attempts = array('en_US'); // Default if browser does not send HTTP_ACCEPT_LANGUAGE
291 if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) // e.g. "fr,fr-fr;q=0.8,en;q=0.5,en-us;q=0.3"
292 { // (It's a bit crude, but it works very well. Preferred language is always presented first.)
293 if (preg_match('/([a-z]{2})-?([a-z]{2})?/i',$_SERVER['HTTP_ACCEPT_LANGUAGE'],$matches)) {
294 $loc = $matches[1] . (!empty($matches[2]) ? '_' . strtoupper($matches[2]) : '');
295 $attempts = array($loc.'.UTF-8', $loc, str_replace('_', '-', $loc).'.UTF-8', str_replace('_', '-', $loc),
296 $loc . '_' . strtoupper($loc).'.UTF-8', $loc . '_' . strtoupper($loc),
297 $loc . '_' . $loc.'.UTF-8', $loc . '_' . $loc, $loc . '-' . strtoupper($loc).'.UTF-8',
298 $loc . '-' . strtoupper($loc), $loc . '-' . $loc.'.UTF-8', $loc . '-' . $loc);
299 }
300 }
301 setlocale(LC_TIME, $attempts); // LC_TIME = Set local for date/time format only.
302}
303
304// ------------------------------------------------------------------------------------------
305// PubSubHubbub protocol support (if enabled) [UNTESTED]
306// (Source: http://aldarone.fr/les-flux-rss-shaarli-et-pubsubhubbub/ )
307if (!empty($GLOBALS['config']['PUBSUBHUB_URL'])) include './publisher.php';
308function pubsubhub()
309{
310 if (!empty($GLOBALS['config']['PUBSUBHUB_URL']))
311 {
312 $p = new Publisher($GLOBALS['config']['PUBSUBHUB_URL']);
313 $topic_url = array (
314 indexUrl().'?do=atom',
315 indexUrl().'?do=rss'
316 );
317 $p->publish_update($topic_url);
318 }
319}
320
321// ------------------------------------------------------------------------------------------
322// Session management
323
324// Returns the IP address of the client (Used to prevent session cookie hijacking.)
325function allIPs()
326{
327 $ip = $_SERVER["REMOTE_ADDR"];
328 // Then we use more HTTP headers to prevent session hijacking from users behind the same proxy.
329 if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) { $ip=$ip.'_'.$_SERVER['HTTP_X_FORWARDED_FOR']; }
330 if (isset($_SERVER['HTTP_CLIENT_IP'])) { $ip=$ip.'_'.$_SERVER['HTTP_CLIENT_IP']; }
331 return $ip;
332}
333
334function fillSessionInfo() {
335 $_SESSION['uid'] = sha1(uniqid('',true).'_'.mt_rand()); // Generate unique random number (different than phpsessionid)
336 $_SESSION['ip']=allIPs(); // We store IP address(es) of the client to make sure session is not hijacked.
337 $_SESSION['username']=$GLOBALS['login'];
338 $_SESSION['expires_on']=time()+INACTIVITY_TIMEOUT; // Set session expiration.
339}
340
341// Check that user/password is correct.
342function check_auth($login,$password)
343{
344 $hash = sha1($password.$login.$GLOBALS['salt']);
345 if ($login==$GLOBALS['login'] && $hash==$GLOBALS['hash'])
346 { // Login/password is correct.
347 fillSessionInfo();
348 logm('Login successful');
349 return True;
350 }
351 logm('Login failed for user '.$login);
352 return False;
353}
354
355// Returns true if the user is logged in.
356function isLoggedIn()
357{
358 global $userIsLoggedIn;
359 return $userIsLoggedIn;
360}
361
362// Force logout.
363function logout() {
364 if (isset($_SESSION)) {
365 unset($_SESSION['uid']);
366 unset($_SESSION['ip']);
367 unset($_SESSION['username']);
368 unset($_SESSION['privateonly']);
369 }
370 setcookie('shaarli_staySignedIn', FALSE, 0, WEB_PATH);
371}
372
373
374// ------------------------------------------------------------------------------------------
375// Brute force protection system
376// Several consecutive failed logins will ban the IP address for 30 minutes.
377if (!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?>");
378include $GLOBALS['config']['IPBANS_FILENAME'];
379// Signal a failed login. Will ban the IP if too many failures:
380function ban_loginFailed()
381{
382 $ip=$_SERVER["REMOTE_ADDR"]; $gb=$GLOBALS['IPBANS'];
383 if (!isset($gb['FAILURES'][$ip])) $gb['FAILURES'][$ip]=0;
384 $gb['FAILURES'][$ip]++;
385 if ($gb['FAILURES'][$ip]>($GLOBALS['config']['BAN_AFTER']-1))
386 {
387 $gb['BANS'][$ip]=time()+$GLOBALS['config']['BAN_DURATION'];
388 logm('IP address banned from login');
389 }
390 $GLOBALS['IPBANS'] = $gb;
391 file_put_contents($GLOBALS['config']['IPBANS_FILENAME'], "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>");
392}
393
394// Signals a successful login. Resets failed login counter.
395function ban_loginOk()
396{
397 $ip=$_SERVER["REMOTE_ADDR"]; $gb=$GLOBALS['IPBANS'];
398 unset($gb['FAILURES'][$ip]); unset($gb['BANS'][$ip]);
399 $GLOBALS['IPBANS'] = $gb;
400 file_put_contents($GLOBALS['config']['IPBANS_FILENAME'], "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>");
401}
402
403// Checks if the user CAN login. If 'true', the user can try to login.
404function ban_canLogin()
405{
406 $ip=$_SERVER["REMOTE_ADDR"]; $gb=$GLOBALS['IPBANS'];
407 if (isset($gb['BANS'][$ip]))
408 {
409 // User is banned. Check if the ban has expired:
410 if ($gb['BANS'][$ip]<=time())
411 { // Ban expired, user can try to login again.
412 logm('Ban lifted.');
413 unset($gb['FAILURES'][$ip]); unset($gb['BANS'][$ip]);
414 file_put_contents($GLOBALS['config']['IPBANS_FILENAME'], "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>");
415 return true; // Ban has expired, user can login.
416 }
417 return false; // User is banned.
418 }
419 return true; // User is not banned.
420}
421
422// ------------------------------------------------------------------------------------------
423// Process login form: Check if login/password is correct.
424if (isset($_POST['login']))
425{
426 if (!ban_canLogin()) die('I said: NO. You are banned for the moment. Go away.');
427 if (isset($_POST['password']) && tokenOk($_POST['token']) && (check_auth($_POST['login'], $_POST['password'])))
428 { // Login/password is OK.
429 ban_loginOk();
430 // If user wants to keep the session cookie even after the browser closes:
431 if (!empty($_POST['longlastingsession']))
432 {
433 setcookie('shaarli_staySignedIn', STAY_SIGNED_IN_TOKEN, time()+31536000, WEB_PATH);
434 $_SESSION['longlastingsession']=31536000; // (31536000 seconds = 1 year)
435 $_SESSION['expires_on']=time()+$_SESSION['longlastingsession']; // Set session expiration on server-side.
436
437 $cookiedir = ''; if(dirname($_SERVER['SCRIPT_NAME'])!='/') $cookiedir=dirname($_SERVER["SCRIPT_NAME"]).'/';
438 session_set_cookie_params($_SESSION['longlastingsession'],$cookiedir,$_SERVER['SERVER_NAME']); // Set session cookie expiration on client side
439 // Note: Never forget the trailing slash on the cookie path!
440 session_regenerate_id(true); // Send cookie with new expiration date to browser.
441 }
442 else // Standard session expiration (=when browser closes)
443 {
444 $cookiedir = ''; if(dirname($_SERVER['SCRIPT_NAME'])!='/') $cookiedir=dirname($_SERVER["SCRIPT_NAME"]).'/';
445 session_set_cookie_params(0,$cookiedir,$_SERVER['SERVER_NAME']); // 0 means "When browser closes"
446 session_regenerate_id(true);
447 }
448 // Optional redirect after login:
449 if (isset($_GET['post'])) { header('Location: ?post='.urlencode($_GET['post']).(!empty($_GET['title'])?'&title='.urlencode($_GET['title']):'').(!empty($_GET['description'])?'&description='.urlencode($_GET['description']):'').(!empty($_GET['source'])?'&source='.urlencode($_GET['source']):'')); exit; }
450 if (isset($_POST['returnurl']))
451 {
452 if (endsWith($_POST['returnurl'],'?do=login')) { header('Location: ?'); exit; } // Prevent loops over login screen.
453 header('Location: '.$_POST['returnurl']); exit;
454 }
455 header('Location: ?'); exit;
456 }
457 else
458 {
459 ban_loginFailed();
460 $redir = '';
461 if (isset($_GET['post'])) { $redir = '&post='.urlencode($_GET['post']).(!empty($_GET['title'])?'&title='.urlencode($_GET['title']):'').(!empty($_GET['description'])?'&description='.urlencode($_GET['description']):'').(!empty($_GET['source'])?'&source='.urlencode($_GET['source']):''); }
462 echo '<script>alert("Wrong login/password.");document.location=\'?do=login'.$redir.'\';</script>'; // Redirect to login screen.
463 exit;
464 }
465}
466
467// ------------------------------------------------------------------------------------------
468// Misc utility functions:
469
470// Returns the server URL (including port and http/https), without path.
471// e.g. "http://myserver.com:8080"
472// You can append $_SERVER['SCRIPT_NAME'] to get the current script URL.
473function serverUrl()
474{
475 $https = (!empty($_SERVER['HTTPS']) && (strtolower($_SERVER['HTTPS'])=='on')) || $_SERVER["SERVER_PORT"]=='443'; // HTTPS detection.
476 $serverport = ($_SERVER["SERVER_PORT"]=='80' || ($https && $_SERVER["SERVER_PORT"]=='443') ? '' : ':'.$_SERVER["SERVER_PORT"]);
477 return 'http'.($https?'s':'').'://'.$_SERVER['SERVER_NAME'].$serverport;
478}
479
480// Returns the absolute URL of current script, without the query.
481// (e.g. http://sebsauvage.net/links/)
482function indexUrl()
483{
484 $scriptname = $_SERVER["SCRIPT_NAME"];
485 // If the script is named 'index.php', we remove it (for better looking URLs,
486 // e.g. http://mysite.com/shaarli/?abcde instead of http://mysite.com/shaarli/index.php?abcde)
487 if (endswith($scriptname,'index.php')) $scriptname = substr($scriptname,0,strlen($scriptname)-9);
488 return serverUrl() . $scriptname;
489}
490
491// Returns the absolute URL of current script, WITH the query.
492// (e.g. http://sebsauvage.net/links/?toto=titi&spamspamspam=humbug)
493function pageUrl()
494{
495 return indexUrl().(!empty($_SERVER["QUERY_STRING"]) ? '?'.$_SERVER["QUERY_STRING"] : '');
496}
497
498// Convert post_max_size/upload_max_filesize (e.g. '16M') parameters to bytes.
499function return_bytes($val)
500{
501 $val = trim($val); $last=strtolower($val[strlen($val)-1]);
502 switch($last)
503 {
504 case 'g': $val *= 1024;
505 case 'm': $val *= 1024;
506 case 'k': $val *= 1024;
507 }
508 return $val;
509}
510
511// Try to determine max file size for uploads (POST).
512// Returns an integer (in bytes)
513function getMaxFileSize()
514{
515 $size1 = return_bytes(ini_get('post_max_size'));
516 $size2 = return_bytes(ini_get('upload_max_filesize'));
517 // Return the smaller of two:
518 $maxsize = min($size1,$size2);
519 // FIXME: Then convert back to readable notations ? (e.g. 2M instead of 2000000)
520 return $maxsize;
521}
522
523/* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a timestamp (Unix epoch)
524 (used to build the ADD_DATE attribute in Netscape-bookmarks file)
525 PS: I could have used strptime(), but it does not exist on Windows. I'm too kind. */
526function linkdate2timestamp($linkdate)
527{
528 if(strcmp($linkdate, '_000000') !== 0 || !$linkdate){
529 $Y=$M=$D=$h=$m=$s=0;
530 $r = sscanf($linkdate,'%4d%2d%2d_%2d%2d%2d',$Y,$M,$D,$h,$m,$s);
531 return mktime($h,$m,$s,$M,$D,$Y);
532 }
533 return time();
534}
535
536/* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a RFC822 date.
537 (used to build the pubDate attribute in RSS feed.) */
538function linkdate2rfc822($linkdate)
539{
540 return date('r',linkdate2timestamp($linkdate)); // 'r' is for RFC822 date format.
541}
542
543/* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a ISO 8601 date.
544 (used to build the updated tags in ATOM feed.) */
545function linkdate2iso8601($linkdate)
546{
547 return date('c',linkdate2timestamp($linkdate)); // 'c' is for ISO 8601 date format.
548}
549
550// Parse HTTP response headers and return an associative array.
551function http_parse_headers_shaarli( $headers )
552{
553 $res=array();
554 foreach($headers as $header)
555 {
556 $i = strpos($header,': ');
557 if ($i!==false)
558 {
559 $key=substr($header,0,$i);
560 $value=substr($header,$i+2,strlen($header)-$i-2);
561 $res[$key]=$value;
562 }
563 }
564 return $res;
565}
566
567/* GET an URL.
568 Input: $url : URL to get (http://...)
569 $timeout : Network timeout (will wait this many seconds for an anwser before giving up).
570 Output: An array. [0] = HTTP status message (e.g. "HTTP/1.1 200 OK") or error message
571 [1] = associative array containing HTTP response headers (e.g. echo getHTTP($url)[1]['Content-Type'])
572 [2] = data
573 Example: list($httpstatus,$headers,$data) = getHTTP('http://sebauvage.net/');
574 if (strpos($httpstatus,'200 OK')!==false)
575 echo 'Data type: '.htmlspecialchars($headers['Content-Type']);
576 else
577 echo 'There was an error: '.htmlspecialchars($httpstatus)
578*/
579function getHTTP($url,$timeout=30)
580{
581 try
582 {
583 $options = array('http'=>array('method'=>'GET','timeout' => $timeout, 'user_agent' => 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:23.0) Gecko/20100101 Firefox/23.0')); // Force network timeout
584 $context = stream_context_create($options);
585 $data=file_get_contents($url,false,$context,-1, 4000000); // We download at most 4 Mb from source.
586 if (!$data) { return array('HTTP Error',array(),''); }
587 $httpStatus=$http_response_header[0]; // e.g. "HTTP/1.1 200 OK"
588 $responseHeaders=http_parse_headers_shaarli($http_response_header);
589 return array($httpStatus,$responseHeaders,$data);
590 }
591 catch (Exception $e) // getHTTP *can* fail silently (we don't care if the title cannot be fetched)
592 {
593 return array($e->getMessage(),'','');
594 }
595}
596
597// Extract title from an HTML document.
598// (Returns an empty string if not found.)
599function html_extract_title($html)
600{
601 return preg_match('!<title>(.*?)</title>!is', $html, $matches) ? trim(str_replace("\n",' ', $matches[1])) : '' ;
602}
603
604// ------------------------------------------------------------------------------------------
605// Token management for XSRF protection
606// Token should be used in any form which acts on data (create,update,delete,import...).
607if (!isset($_SESSION['tokens'])) $_SESSION['tokens']=array(); // Token are attached to the session.
608
609// Returns a token.
610function getToken()
611{
612 $rnd = sha1(uniqid('',true).'_'.mt_rand().$GLOBALS['salt']); // We generate a random string.
613 $_SESSION['tokens'][$rnd]=1; // Store it on the server side.
614 return $rnd;
615}
616
617// Tells if a token is OK. Using this function will destroy the token.
618// true=token is OK.
619function tokenOk($token)
620{
621 if (isset($_SESSION['tokens'][$token]))
622 {
623 unset($_SESSION['tokens'][$token]); // Token is used: destroy it.
624 return true; // Token is OK.
625 }
626 return false; // Wrong token, or already used.
627}
628
629// ------------------------------------------------------------------------------------------
630/* This class is in charge of building the final page.
631 (This is basically a wrapper around RainTPL which pre-fills some fields.)
632 p = new pageBuilder;
633 p.assign('myfield','myvalue');
634 p.renderPage('mytemplate');
635
636*/
637class pageBuilder
638{
639 private $tpl; // RainTPL template
640
641 function __construct()
642 {
643 $this->tpl=false;
644 }
645
646 private function initialize()
647 {
648 $this->tpl = new RainTPL;
649 $this->tpl->assign('newversion',escape(checkUpdate()));
650 $this->tpl->assign('feedurl',escape(indexUrl()));
651 $searchcrits=''; // Search criteria
652 if (!empty($_GET['searchtags'])) $searchcrits.='&searchtags='.urlencode($_GET['searchtags']);
653 elseif (!empty($_GET['searchterm'])) $searchcrits.='&searchterm='.urlencode($_GET['searchterm']);
654 $this->tpl->assign('searchcrits',$searchcrits);
655 $this->tpl->assign('source',indexUrl());
656 $this->tpl->assign('version',shaarli_version);
657 $this->tpl->assign('scripturl',indexUrl());
658 $this->tpl->assign('pagetitle','Shaarli');
659 $this->tpl->assign('privateonly',!empty($_SESSION['privateonly'])); // Show only private links?
660 if (!empty($GLOBALS['title'])) $this->tpl->assign('pagetitle',$GLOBALS['title']);
661 if (!empty($GLOBALS['titleLink'])) $this->tpl->assign('titleLink',$GLOBALS['titleLink']);
662 if (!empty($GLOBALS['pagetitle'])) $this->tpl->assign('pagetitle',$GLOBALS['pagetitle']);
663 $this->tpl->assign('shaarlititle',empty($GLOBALS['title']) ? 'Shaarli': $GLOBALS['title'] );
664 return;
665 }
666
667 // The following assign() method is basically the same as RainTPL (except that it's lazy)
668 public function assign($what,$where)
669 {
670 if ($this->tpl===false) $this->initialize(); // Lazy initialization
671 $this->tpl->assign($what,$where);
672 }
673
674 // Render a specific page (using a template).
675 // e.g. pb.renderPage('picwall')
676 public function renderPage($page)
677 {
678 if ($this->tpl===false) $this->initialize(); // Lazy initialization
679 $this->tpl->draw($page);
680 }
681}
682
683// ------------------------------------------------------------------------------------------
684// Output the last N links in RSS 2.0 format.
685function showRSS()
686{
687 header('Content-Type: application/rss+xml; charset=utf-8');
688
689 // $usepermalink : If true, use permalink instead of final link.
690 // User just has to add 'permalink' in URL parameters. e.g. http://mysite.com/shaarli/?do=rss&permalinks
691 // Also enabled through a config option
692 $usepermalinks = isset($_GET['permalinks']) || !$GLOBALS['config']['ENABLE_RSS_PERMALINKS'];
693
694 // Cache system
695 $query = $_SERVER["QUERY_STRING"];
696 $cache = new pageCache(pageUrl(),startsWith($query,'do=rss') && !isLoggedIn());
697 $cached = $cache->cachedVersion(); if (!empty($cached)) { echo $cached; exit; }
698
699 // If cached was not found (or not usable), then read the database and build the response:
700 $LINKSDB = new LinkDB(
701 $GLOBALS['config']['DATASTORE'],
702 isLoggedIn() || $GLOBALS['config']['OPEN_SHAARLI'],
703 $GLOBALS['config']['HIDE_PUBLIC_LINKS']
704 );
705 // Read links from database (and filter private links if user it not logged in).
706
707 // Optionally filter the results:
708 $linksToDisplay=array();
709 if (!empty($_GET['searchterm'])) $linksToDisplay = $LINKSDB->filterFulltext($_GET['searchterm']);
710 else if (!empty($_GET['searchtags'])) $linksToDisplay = $LINKSDB->filterTags(trim($_GET['searchtags']));
711 else $linksToDisplay = $LINKSDB;
712
713 $nblinksToDisplay = 50; // Number of links to display.
714 if (!empty($_GET['nb'])) // In URL, you can specificy the number of links. Example: nb=200 or nb=all for all links.
715 {
716 $nblinksToDisplay = $_GET['nb']=='all' ? count($linksToDisplay) : max($_GET['nb']+0,1) ;
717 }
718
719 $pageaddr=escape(indexUrl());
720 echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">';
721 echo '<channel><title>'.$GLOBALS['title'].'</title><link>'.$pageaddr.'</link>';
722 echo '<description>Shared links</description><language>en-en</language><copyright>'.$pageaddr.'</copyright>'."\n\n";
723 if (!empty($GLOBALS['config']['PUBSUBHUB_URL']))
724 {
725 echo '<!-- PubSubHubbub Discovery -->';
726 echo '<link rel="hub" href="'.escape($GLOBALS['config']['PUBSUBHUB_URL']).'" xmlns="http://www.w3.org/2005/Atom" />';
727 echo '<link rel="self" href="'.$pageaddr.'?do=rss" xmlns="http://www.w3.org/2005/Atom" />';
728 echo '<!-- End Of PubSubHubbub Discovery -->';
729 }
730 $i=0;
731 $keys=array(); foreach($linksToDisplay as $key=>$value) { $keys[]=$key; } // No, I can't use array_keys().
732 while ($i<$nblinksToDisplay && $i<count($keys))
733 {
734 $link = $linksToDisplay[$keys[$i]];
735 $guid = $pageaddr.'?'.smallHash($link['linkdate']);
736 $rfc822date = linkdate2rfc822($link['linkdate']);
737 $absurl = $link['url'];
738 if (startsWith($absurl,'?')) $absurl=$pageaddr.$absurl; // make permalink URL absolute
739 if ($usepermalinks===true)
740 echo '<item><title>'.$link['title'].'</title><guid isPermaLink="true">'.$guid.'</guid><link>'.$guid.'</link>';
741 else
742 echo '<item><title>'.$link['title'].'</title><guid isPermaLink="false">'.$guid.'</guid><link>'.$absurl.'</link>';
743 if (!$GLOBALS['config']['HIDE_TIMESTAMPS'] || isLoggedIn()) echo '<pubDate>'.escape($rfc822date)."</pubDate>\n";
744 if ($link['tags']!='') // Adding tags to each RSS entry (as mentioned in RSS specification)
745 {
746 foreach(explode(' ',$link['tags']) as $tag) { echo '<category domain="'.$pageaddr.'">'.$tag.'</category>'."\n"; }
747 }
748
749 // Add permalink in description
750 $descriptionlink = '(<a href="'.$guid.'">Permalink</a>)';
751 // If user wants permalinks first, put the final link in description
752 if ($usepermalinks===true) $descriptionlink = '(<a href="'.$absurl.'">Link</a>)';
753 if (strlen($link['description'])>0) $descriptionlink = '<br>'.$descriptionlink;
754 echo '<description><![CDATA['.nl2br(keepMultipleSpaces(text2clickable($link['description']))).$descriptionlink.']]></description>'."\n</item>\n";
755 $i++;
756 }
757 echo '</channel></rss><!-- Cached version of '.escape(pageUrl()).' -->';
758
759 $cache->cache(ob_get_contents());
760 ob_end_flush();
761 exit;
762}
763
764// ------------------------------------------------------------------------------------------
765// Output the last N links in ATOM format.
766function showATOM()
767{
768 header('Content-Type: application/atom+xml; charset=utf-8');
769
770 // $usepermalink : If true, use permalink instead of final link.
771 // User just has to add 'permalink' in URL parameters. e.g. http://mysite.com/shaarli/?do=atom&permalinks
772 $usepermalinks = isset($_GET['permalinks']) || !$GLOBALS['config']['ENABLE_RSS_PERMALINKS'];
773
774 // Cache system
775 $query = $_SERVER["QUERY_STRING"];
776 $cache = new pageCache(pageUrl(),startsWith($query,'do=atom') && !isLoggedIn());
777 $cached = $cache->cachedVersion(); if (!empty($cached)) { echo $cached; exit; }
778 // If cached was not found (or not usable), then read the database and build the response:
779
780// Read links from database (and filter private links if used it not logged in).
781 $LINKSDB = new LinkDB(
782 $GLOBALS['config']['DATASTORE'],
783 isLoggedIn() || $GLOBALS['config']['OPEN_SHAARLI'],
784 $GLOBALS['config']['HIDE_PUBLIC_LINKS']
785 );
786
787 // Optionally filter the results:
788 $linksToDisplay=array();
789 if (!empty($_GET['searchterm'])) $linksToDisplay = $LINKSDB->filterFulltext($_GET['searchterm']);
790 else if (!empty($_GET['searchtags'])) $linksToDisplay = $LINKSDB->filterTags(trim($_GET['searchtags']));
791 else $linksToDisplay = $LINKSDB;
792
793 $nblinksToDisplay = 50; // Number of links to display.
794 if (!empty($_GET['nb'])) // In URL, you can specificy the number of links. Example: nb=200 or nb=all for all links.
795 {
796 $nblinksToDisplay = $_GET['nb']=='all' ? count($linksToDisplay) : max($_GET['nb']+0,1) ;
797 }
798
799 $pageaddr=escape(indexUrl());
800 $latestDate = '';
801 $entries='';
802 $i=0;
803 $keys=array(); foreach($linksToDisplay as $key=>$value) { $keys[]=$key; } // No, I can't use array_keys().
804 while ($i<$nblinksToDisplay && $i<count($keys))
805 {
806 $link = $linksToDisplay[$keys[$i]];
807 $guid = $pageaddr.'?'.smallHash($link['linkdate']);
808 $iso8601date = linkdate2iso8601($link['linkdate']);
809 $latestDate = max($latestDate,$iso8601date);
810 $absurl = $link['url'];
811 if (startsWith($absurl,'?')) $absurl=$pageaddr.$absurl; // make permalink URL absolute
812 $entries.='<entry><title>'.$link['title'].'</title>';
813 if ($usepermalinks===true)
814 $entries.='<link href="'.$guid.'" /><id>'.$guid.'</id>';
815 else
816 $entries.='<link href="'.$absurl.'" /><id>'.$guid.'</id>';
817 if (!$GLOBALS['config']['HIDE_TIMESTAMPS'] || isLoggedIn()) $entries.='<updated>'.escape($iso8601date).'</updated>';
818
819 // Add permalink in description
820 $descriptionlink = '(<a href="'.$guid.'">Permalink</a>)';
821 // If user wants permalinks first, put the final link in description
822 if ($usepermalinks===true) $descriptionlink = '(<a href="'.$absurl.'">Link</a>)';
823 if (strlen($link['description'])>0) $descriptionlink = '<br>'.$descriptionlink;
824
825 $entries.='<content type="html"><![CDATA['.nl2br(keepMultipleSpaces(text2clickable($link['description']))).$descriptionlink."]]></content>\n";
826 if ($link['tags']!='') // Adding tags to each ATOM entry (as mentioned in ATOM specification)
827 {
828 foreach(explode(' ',$link['tags']) as $tag)
829 { $entries.='<category scheme="'.$pageaddr.'" term="'.$tag.'" />'."\n"; }
830 }
831 $entries.="</entry>\n";
832 $i++;
833 }
834 $feed='<?xml version="1.0" encoding="UTF-8"?><feed xmlns="http://www.w3.org/2005/Atom">';
835 $feed.='<title>'.$GLOBALS['title'].'</title>';
836 if (!$GLOBALS['config']['HIDE_TIMESTAMPS'] || isLoggedIn()) $feed.='<updated>'.escape($latestDate).'</updated>';
837 $feed.='<link rel="self" href="'.escape(serverUrl().$_SERVER["REQUEST_URI"]).'" />';
838 if (!empty($GLOBALS['config']['PUBSUBHUB_URL']))
839 {
840 $feed.='<!-- PubSubHubbub Discovery -->';
841 $feed.='<link rel="hub" href="'.escape($GLOBALS['config']['PUBSUBHUB_URL']).'" />';
842 $feed.='<!-- End Of PubSubHubbub Discovery -->';
843 }
844 $feed.='<author><name>'.$pageaddr.'</name><uri>'.$pageaddr.'</uri></author>';
845 $feed.='<id>'.$pageaddr.'</id>'."\n\n"; // Yes, I know I should use a real IRI (RFC3987), but the site URL will do.
846 $feed.=$entries;
847 $feed.='</feed><!-- Cached version of '.escape(pageUrl()).' -->';
848 echo $feed;
849
850 $cache->cache(ob_get_contents());
851 ob_end_flush();
852 exit;
853}
854
855// ------------------------------------------------------------------------------------------
856// Daily RSS feed: 1 RSS entry per day giving all the links on that day.
857// Gives the last 7 days (which have links).
858// This RSS feed cannot be filtered.
859function showDailyRSS()
860{
861 // Cache system
862 $query = $_SERVER["QUERY_STRING"];
863 $cache = new pageCache(pageUrl(),startsWith($query,'do=dailyrss') && !isLoggedIn());
864 $cached = $cache->cachedVersion(); if (!empty($cached)) { echo $cached; exit; }
865 // If cached was not found (or not usable), then read the database and build the response:
866
867// Read links from database (and filter private links if used it not logged in).
868 $LINKSDB = new LinkDB(
869 $GLOBALS['config']['DATASTORE'],
870 isLoggedIn() || $GLOBALS['config']['OPEN_SHAARLI'],
871 $GLOBALS['config']['HIDE_PUBLIC_LINKS']
872 );
873
874 /* Some Shaarlies may have very few links, so we need to look
875 back in time (rsort()) until we have enough days ($nb_of_days).
876 */
877 $linkdates=array(); foreach($LINKSDB as $linkdate=>$value) { $linkdates[]=$linkdate; }
878 rsort($linkdates);
879 $nb_of_days=7; // We take 7 days.
880 $today=Date('Ymd');
881 $days=array();
882 foreach($linkdates as $linkdate)
883 {
884 $day=substr($linkdate,0,8); // Extract day (without time)
885 if (strcmp($day,$today)<0)
886 {
887 if (empty($days[$day])) $days[$day]=array();
888 $days[$day][]=$linkdate;
889 }
890 if (count($days)>$nb_of_days) break; // Have we collected enough days?
891 }
892
893 // Build the RSS feed.
894 header('Content-Type: application/rss+xml; charset=utf-8');
895 $pageaddr=escape(indexUrl());
896 echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0">';
897 echo '<channel><title>Daily - '.$GLOBALS['title'].'</title><link>'.$pageaddr.'</link>';
898 echo '<description>Daily shared links</description><language>en-en</language><copyright>'.$pageaddr.'</copyright>'."\n";
899
900 foreach($days as $day=>$linkdates) // For each day.
901 {
902 $daydate = utf8_encode(strftime('%A %d, %B %Y',linkdate2timestamp($day.'_000000'))); // Full text date
903 $rfc822date = linkdate2rfc822($day.'_000000');
904 $absurl=escape(indexUrl().'?do=daily&day='.$day); // Absolute URL of the corresponding "Daily" page.
905 echo '<item><title>'.$GLOBALS['title'].' - '.$daydate.'</title><guid>'.$absurl.'</guid><link>'.$absurl.'</link>';
906 echo '<pubDate>'.escape($rfc822date)."</pubDate>";
907
908 // Build the HTML body of this RSS entry.
909 $html='';
910 $href='';
911 $links=array();
912 // We pre-format some fields for proper output.
913 foreach($linkdates as $linkdate)
914 {
915 $l = $LINKSDB[$linkdate];
916 $l['formatedDescription']=nl2br(keepMultipleSpaces(text2clickable($l['description'])));
917 $l['thumbnail'] = thumbnail($l['url']);
918 $l['timestamp'] = linkdate2timestamp($l['linkdate']);
919 if (startsWith($l['url'],'?')) $l['url']=indexUrl().$l['url']; // make permalink URL absolute
920 $links[$linkdate]=$l;
921 }
922 // Then build the HTML for this day:
923 $tpl = new RainTPL;
924 $tpl->assign('links',$links);
925 $html = $tpl->draw('dailyrss',$return_string=true);
926 echo "\n";
927 echo '<description><![CDATA['.$html.']]></description>'."\n</item>\n\n";
928
929 }
930 echo '</channel></rss><!-- Cached version of '.escape(pageUrl()).' -->';
931
932 $cache->cache(ob_get_contents());
933 ob_end_flush();
934 exit;
935}
936
937// "Daily" page.
938function showDaily()
939{
940 $LINKSDB = new LinkDB(
941 $GLOBALS['config']['DATASTORE'],
942 isLoggedIn() || $GLOBALS['config']['OPEN_SHAARLI'],
943 $GLOBALS['config']['HIDE_PUBLIC_LINKS']
944 );
945
946 $day=Date('Ymd',strtotime('-1 day')); // Yesterday, in format YYYYMMDD.
947 if (isset($_GET['day'])) $day=$_GET['day'];
948
949 $days = $LINKSDB->days();
950 $i = array_search($day,$days);
951 if ($i==false) { $i=count($days)-1; $day=$days[$i]; }
952 $previousday='';
953 $nextday='';
954 if ($i!==false)
955 {
956 if ($i>1) $previousday=$days[$i-1];
957 if ($i<count($days)-1) $nextday=$days[$i+1];
958 }
959
960 $linksToDisplay=$LINKSDB->filterDay($day);
961 // We pre-format some fields for proper output.
962 foreach($linksToDisplay as $key=>$link)
963 {
964
965 $taglist = explode(' ',$link['tags']);
966 uasort($taglist, 'strcasecmp');
967 $linksToDisplay[$key]['taglist']=$taglist;
968 $linksToDisplay[$key]['formatedDescription']=nl2br(keepMultipleSpaces(text2clickable($link['description'])));
969 $linksToDisplay[$key]['thumbnail'] = thumbnail($link['url']);
970 $linksToDisplay[$key]['timestamp'] = linkdate2timestamp($link['linkdate']);
971 }
972
973 /* We need to spread the articles on 3 columns.
974 I did not want to use a JavaScript lib like http://masonry.desandro.com/
975 so I manually spread entries with a simple method: I roughly evaluate the
976 height of a div according to title and description length.
977 */
978 $columns=array(array(),array(),array()); // Entries to display, for each column.
979 $fill=array(0,0,0); // Rough estimate of columns fill.
980 foreach($linksToDisplay as $key=>$link)
981 {
982 // Roughly estimate length of entry (by counting characters)
983 // Title: 30 chars = 1 line. 1 line is 30 pixels height.
984 // Description: 836 characters gives roughly 342 pixel height.
985 // This is not perfect, but it's usually OK.
986 $length=strlen($link['title'])+(342*strlen($link['description']))/836;
987 if ($link['thumbnail']) $length +=100; // 1 thumbnails roughly takes 100 pixels height.
988 // Then put in column which is the less filled:
989 $smallest=min($fill); // find smallest value in array.
990 $index=array_search($smallest,$fill); // find index of this smallest value.
991 array_push($columns[$index],$link); // Put entry in this column.
992 $fill[$index]+=$length;
993 }
994 $PAGE = new pageBuilder;
995 $PAGE->assign('linksToDisplay',$linksToDisplay);
996 $PAGE->assign('linkcount',count($LINKSDB));
997 $PAGE->assign('cols', $columns);
998 $PAGE->assign('day',linkdate2timestamp($day.'_000000'));
999 $PAGE->assign('previousday',$previousday);
1000 $PAGE->assign('nextday',$nextday);
1001 $PAGE->renderPage('daily');
1002 exit;
1003}
1004
1005
1006// ------------------------------------------------------------------------------------------
1007// Render HTML page (according to URL parameters and user rights)
1008function renderPage()
1009{
1010 $LINKSDB = new LinkDB(
1011 $GLOBALS['config']['DATASTORE'],
1012 isLoggedIn() || $GLOBALS['config']['OPEN_SHAARLI'],
1013 $GLOBALS['config']['HIDE_PUBLIC_LINKS']
1014 );
1015
1016 // -------- Display login form.
1017 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=login'))
1018 {
1019 if ($GLOBALS['config']['OPEN_SHAARLI']) { header('Location: ?'); exit; } // No need to login for open Shaarli
1020 $token=''; if (ban_canLogin()) $token=getToken(); // Do not waste token generation if not useful.
1021 $PAGE = new pageBuilder;
1022 $PAGE->assign('token',$token);
1023 $PAGE->assign('returnurl',(isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']):''));
1024 $PAGE->renderPage('loginform');
1025 exit;
1026 }
1027 // -------- User wants to logout.
1028 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=logout'))
1029 {
1030 invalidateCaches();
1031 logout();
1032 header('Location: ?');
1033 exit;
1034 }
1035
1036 // -------- Picture wall
1037 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=picwall'))
1038 {
1039 // Optionally filter the results:
1040 $links=array();
1041 if (!empty($_GET['searchterm'])) $links = $LINKSDB->filterFulltext($_GET['searchterm']);
1042 elseif (!empty($_GET['searchtags'])) $links = $LINKSDB->filterTags(trim($_GET['searchtags']));
1043 else $links = $LINKSDB;
1044
1045 $body='';
1046 $linksToDisplay=array();
1047
1048 // Get only links which have a thumbnail.
1049 foreach($links as $link)
1050 {
1051 $permalink='?'.escape(smallhash($link['linkdate']));
1052 $thumb=lazyThumbnail($link['url'],$permalink);
1053 if ($thumb!='') // Only output links which have a thumbnail.
1054 {
1055 $link['thumbnail']=$thumb; // Thumbnail HTML code.
1056 $linksToDisplay[]=$link; // Add to array.
1057 }
1058 }
1059
1060 $PAGE = new pageBuilder;
1061 $PAGE->assign('linkcount',count($LINKSDB));
1062 $PAGE->assign('linksToDisplay',$linksToDisplay);
1063 $PAGE->renderPage('picwall');
1064 exit;
1065 }
1066
1067 // -------- Tag cloud
1068 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=tagcloud'))
1069 {
1070 $tags= $LINKSDB->allTags();
1071
1072 // We sort tags alphabetically, then choose a font size according to count.
1073 // First, find max value.
1074 $maxcount=0; foreach($tags as $key=>$value) $maxcount=max($maxcount,$value);
1075 ksort($tags);
1076 $tagList=array();
1077 foreach($tags as $key=>$value)
1078 // Tag font size scaling: default 15 and 30 logarithm bases affect scaling, 22 and 6 are arbitrary font sizes for max and min sizes.
1079 {
1080 $tagList[$key] = array('count'=>$value,'size'=>log($value, 15) / log($maxcount, 30) * (22-6) + 6);
1081 }
1082 $PAGE = new pageBuilder;
1083 $PAGE->assign('linkcount',count($LINKSDB));
1084 $PAGE->assign('tags',$tagList);
1085 $PAGE->renderPage('tagcloud');
1086 exit;
1087 }
1088
1089 // -------- User clicks on a tag in a link: The tag is added to the list of searched tags (searchtags=...)
1090 if (isset($_GET['addtag']))
1091 {
1092 // Get previous URL (http_referer) and add the tag to the searchtags parameters in query.
1093 if (empty($_SERVER['HTTP_REFERER'])) { header('Location: ?searchtags='.urlencode($_GET['addtag'])); exit; } // In case browser does not send HTTP_REFERER
1094 parse_str(parse_url($_SERVER['HTTP_REFERER'],PHP_URL_QUERY), $params);
1095
1096 // Check if this tag is already in the search query and ignore it if it is.
1097 // Each tag is always separated by a space
1098 $current_tags = explode(' ', $params['searchtags']);
1099 $addtag = true;
1100 foreach ($current_tags as $value) {
1101 if ($value === $_GET['addtag']) {
1102 $addtag = false;
1103 break;
1104 }
1105 }
1106 // Append the tag if necessary
1107 if (empty($params['searchtags'])) {
1108 $params['searchtags'] = trim($_GET['addtag']);
1109 }
1110 else if ($addtag) {
1111 $params['searchtags'] = trim($params['searchtags']).' '.trim($_GET['addtag']);
1112 }
1113
1114 unset($params['page']); // We also remove page (keeping the same page has no sense, since the results are different)
1115 header('Location: ?'.http_build_query($params));
1116 exit;
1117 }
1118
1119 // -------- User clicks on a tag in result count: Remove the tag from the list of searched tags (searchtags=...)
1120 if (isset($_GET['removetag']))
1121 {
1122 // Get previous URL (http_referer) and remove the tag from the searchtags parameters in query.
1123 if (empty($_SERVER['HTTP_REFERER'])) { header('Location: ?'); exit; } // In case browser does not send HTTP_REFERER
1124 parse_str(parse_url($_SERVER['HTTP_REFERER'],PHP_URL_QUERY), $params);
1125 if (isset($params['searchtags']))
1126 {
1127 $tags = explode(' ',$params['searchtags']);
1128 $tags=array_diff($tags, array($_GET['removetag'])); // Remove value from array $tags.
1129 if (count($tags)==0) unset($params['searchtags']); else $params['searchtags'] = implode(' ',$tags);
1130 unset($params['page']); // We also remove page (keeping the same page has no sense, since the results are different)
1131 }
1132 header('Location: ?'.http_build_query($params));
1133 exit;
1134 }
1135
1136 // -------- User wants to change the number of links per page (linksperpage=...)
1137 if (isset($_GET['linksperpage']))
1138 {
1139 if (is_numeric($_GET['linksperpage'])) { $_SESSION['LINKS_PER_PAGE']=abs(intval($_GET['linksperpage'])); }
1140 // Make sure the referrer is Shaarli itself.
1141 $referer = '?';
1142 if (!empty($_SERVER['HTTP_REFERER']) && strcmp(parse_url($_SERVER['HTTP_REFERER'],PHP_URL_HOST),$_SERVER['HTTP_HOST'])==0)
1143 $referer = $_SERVER['HTTP_REFERER'];
1144 header('Location: '.$referer);
1145 exit;
1146 }
1147
1148 // -------- User wants to see only private links (toggle)
1149 if (isset($_GET['privateonly']))
1150 {
1151 if (empty($_SESSION['privateonly']))
1152 {
1153 $_SESSION['privateonly']=1; // See only private links
1154 }
1155 else
1156 {
1157 unset($_SESSION['privateonly']); // See all links
1158 }
1159 // Make sure the referrer is Shaarli itself.
1160 $referer = '?';
1161 if (!empty($_SERVER['HTTP_REFERER']) && strcmp(parse_url($_SERVER['HTTP_REFERER'],PHP_URL_HOST),$_SERVER['HTTP_HOST'])==0)
1162 $referer = $_SERVER['HTTP_REFERER'];
1163 header('Location: '.$referer);
1164 exit;
1165 }
1166
1167 // -------- Handle other actions allowed for non-logged in users:
1168 if (!isLoggedIn())
1169 {
1170 // User tries to post new link but is not logged in:
1171 // Show login screen, then redirect to ?post=...
1172 if (isset($_GET['post']))
1173 {
1174 header('Location: ?do=login&post='.urlencode($_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.
1175 exit;
1176 }
1177
1178 // Same case as above except that user tried to access ?do=addlink without being logged in
1179 // Note: passing empty parameters makes Shaarli generate default URLs and descriptions.
1180 if (isset($_GET['do']) && $_GET['do'] === 'addlink') {
1181 header('Location: ?do=login&post=');
1182 exit;
1183 }
1184
1185 $PAGE = new pageBuilder;
1186 buildLinkList($PAGE,$LINKSDB); // Compute list of links to display
1187 $PAGE->renderPage('linklist');
1188 exit; // Never remove this one! All operations below are reserved for logged in user.
1189 }
1190
1191 // -------- All other functions are reserved for the registered user:
1192
1193 // -------- Display the Tools menu if requested (import/export/bookmarklet...)
1194 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=tools'))
1195 {
1196 $PAGE = new pageBuilder;
1197 $PAGE->assign('linkcount',count($LINKSDB));
1198 $PAGE->assign('pageabsaddr',indexUrl());
1199 $PAGE->renderPage('tools');
1200 exit;
1201 }
1202
1203 // -------- User wants to change his/her password.
1204 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=changepasswd'))
1205 {
1206 if ($GLOBALS['config']['OPEN_SHAARLI']) die('You are not supposed to change a password on an Open Shaarli.');
1207 if (!empty($_POST['setpassword']) && !empty($_POST['oldpassword']))
1208 {
1209 if (!tokenOk($_POST['token'])) die('Wrong token.'); // Go away!
1210
1211 // Make sure old password is correct.
1212 $oldhash = sha1($_POST['oldpassword'].$GLOBALS['login'].$GLOBALS['salt']);
1213 if ($oldhash!=$GLOBALS['hash']) { echo '<script>alert("The old password is not correct.");document.location=\'?do=changepasswd\';</script>'; exit; }
1214 // Save new password
1215 $GLOBALS['salt'] = sha1(uniqid('',true).'_'.mt_rand()); // Salt renders rainbow-tables attacks useless.
1216 $GLOBALS['hash'] = sha1($_POST['setpassword'].$GLOBALS['login'].$GLOBALS['salt']);
1217 writeConfig();
1218 echo '<script>alert("Your password has been changed.");document.location=\'?do=tools\';</script>';
1219 exit;
1220 }
1221 else // show the change password form.
1222 {
1223 $PAGE = new pageBuilder;
1224 $PAGE->assign('linkcount',count($LINKSDB));
1225 $PAGE->assign('token',getToken());
1226 $PAGE->renderPage('changepassword');
1227 exit;
1228 }
1229 }
1230
1231 // -------- User wants to change configuration
1232 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=configure'))
1233 {
1234 if (!empty($_POST['title']) )
1235 {
1236 if (!tokenOk($_POST['token'])) die('Wrong token.'); // Go away!
1237 $tz = 'UTC';
1238 if (!empty($_POST['continent']) && !empty($_POST['city']))
1239 if (isTZvalid($_POST['continent'],$_POST['city']))
1240 $tz = $_POST['continent'].'/'.$_POST['city'];
1241 $GLOBALS['timezone'] = $tz;
1242 $GLOBALS['title']=$_POST['title'];
1243 $GLOBALS['titleLink']=$_POST['titleLink'];
1244 $GLOBALS['redirector']=$_POST['redirector'];
1245 $GLOBALS['disablesessionprotection']=!empty($_POST['disablesessionprotection']);
1246 $GLOBALS['disablejquery']=!empty($_POST['disablejquery']);
1247 $GLOBALS['privateLinkByDefault']=!empty($_POST['privateLinkByDefault']);
1248 $GLOBALS['config']['ENABLE_RSS_PERMALINKS']= !empty($_POST['enableRssPermalinks']);
1249 $GLOBALS['config']['ENABLE_UPDATECHECK'] = !empty($_POST['updateCheck']);
1250 $GLOBALS['config']['HIDE_PUBLIC_LINKS'] = !empty($_POST['hidePublicLinks']);
1251 writeConfig();
1252 echo '<script>alert("Configuration was saved.");document.location=\'?do=tools\';</script>';
1253 exit;
1254 }
1255 else // Show the configuration form.
1256 {
1257 $PAGE = new pageBuilder;
1258 $PAGE->assign('linkcount',count($LINKSDB));
1259 $PAGE->assign('token',getToken());
1260 $PAGE->assign('title', empty($GLOBALS['title']) ? '' : $GLOBALS['title'] );
1261 $PAGE->assign('redirector', empty($GLOBALS['redirector']) ? '' : $GLOBALS['redirector'] );
1262 list($timezone_form,$timezone_js) = templateTZform($GLOBALS['timezone']);
1263 $PAGE->assign('timezone_form',$timezone_form); // FIXME: Put entire tz form generation in template?
1264 $PAGE->assign('timezone_js',$timezone_js);
1265 $PAGE->renderPage('configure');
1266 exit;
1267 }
1268 }
1269
1270 // -------- User wants to rename a tag or delete it
1271 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=changetag'))
1272 {
1273 if (empty($_POST['fromtag']))
1274 {
1275 $PAGE = new pageBuilder;
1276 $PAGE->assign('linkcount',count($LINKSDB));
1277 $PAGE->assign('token',getToken());
1278 $PAGE->assign('tags', $LINKSDB->allTags());
1279 $PAGE->renderPage('changetag');
1280 exit;
1281 }
1282 if (!tokenOk($_POST['token'])) die('Wrong token.');
1283
1284 // Delete a tag:
1285 if (!empty($_POST['deletetag']) && !empty($_POST['fromtag']))
1286 {
1287 $needle=trim($_POST['fromtag']);
1288 $linksToAlter = $LINKSDB->filterTags($needle,true); // True for case-sensitive tag search.
1289 foreach($linksToAlter as $key=>$value)
1290 {
1291 $tags = explode(' ',trim($value['tags']));
1292 unset($tags[array_search($needle,$tags)]); // Remove tag.
1293 $value['tags']=trim(implode(' ',$tags));
1294 $LINKSDB[$key]=$value;
1295 }
1296 $LINKSDB->savedb(); // Save to disk.
1297 echo '<script>alert("Tag was removed from '.count($linksToAlter).' links.");document.location=\'?\';</script>';
1298 exit;
1299 }
1300
1301 // Rename a tag:
1302 if (!empty($_POST['renametag']) && !empty($_POST['fromtag']) && !empty($_POST['totag']))
1303 {
1304 $needle=trim($_POST['fromtag']);
1305 $linksToAlter = $LINKSDB->filterTags($needle,true); // true for case-sensitive tag search.
1306 foreach($linksToAlter as $key=>$value)
1307 {
1308 $tags = explode(' ',trim($value['tags']));
1309 $tags[array_search($needle,$tags)] = trim($_POST['totag']); // Replace tags value.
1310 $value['tags']=trim(implode(' ',$tags));
1311 $LINKSDB[$key]=$value;
1312 }
1313 $LINKSDB->savedb(); // Save to disk.
1314 echo '<script>alert("Tag was renamed in '.count($linksToAlter).' links.");document.location=\'?searchtags='.urlencode($_POST['totag']).'\';</script>';
1315 exit;
1316 }
1317 }
1318
1319 // -------- User wants to add a link without using the bookmarklet: Show form.
1320 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=addlink'))
1321 {
1322 $PAGE = new pageBuilder;
1323 $PAGE->assign('linkcount',count($LINKSDB));
1324 $PAGE->renderPage('addlink');
1325 exit;
1326 }
1327
1328 // -------- User clicked the "Save" button when editing a link: Save link to database.
1329 if (isset($_POST['save_edit']))
1330 {
1331 if (!tokenOk($_POST['token'])) die('Wrong token.'); // Go away!
1332 $tags = trim(preg_replace('/\s\s+/',' ', $_POST['lf_tags'])); // Remove multiple spaces.
1333 $linkdate=$_POST['lf_linkdate'];
1334 $url = trim($_POST['lf_url']);
1335 if (!startsWith($url,'http:') && !startsWith($url,'https:') && !startsWith($url,'ftp:') && !startsWith($url,'magnet:') && !startsWith($url,'?') && !startsWith($url,'javascript:'))
1336 $url = 'http://'.$url;
1337 $link = array('title'=>trim($_POST['lf_title']),'url'=>$url,'description'=>trim($_POST['lf_description']),'private'=>(isset($_POST['lf_private']) ? 1 : 0),
1338 'linkdate'=>$linkdate,'tags'=>str_replace(',',' ',$tags));
1339 if ($link['title']=='') $link['title']=$link['url']; // If title is empty, use the URL as title.
1340 $LINKSDB[$linkdate] = $link;
1341 $LINKSDB->savedb(); // Save to disk.
1342 pubsubhub();
1343
1344 // If we are called from the bookmarklet, we must close the popup:
1345 if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) { echo '<script>self.close();</script>'; exit; }
1346 $returnurl = ( isset($_POST['returnurl']) ? $_POST['returnurl'] : '?' );
1347 $returnurl .= '#'.smallHash($linkdate); // Scroll to the link which has been edited.
1348 if (strstr($returnurl, "do=addlink")) { $returnurl = '?'; } //if we come from ?do=addlink, set returnurl to homepage instead
1349 header('Location: '.$returnurl); // After saving the link, redirect to the page the user was on.
1350 exit;
1351 }
1352
1353 // -------- User clicked the "Cancel" button when editing a link.
1354 if (isset($_POST['cancel_edit']))
1355 {
1356 // If we are called from the bookmarklet, we must close the popup:
1357 if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) { echo '<script>self.close();</script>'; exit; }
1358 $returnurl = ( isset($_POST['returnurl']) ? $_POST['returnurl'] : '?' );
1359 $returnurl .= '#'.smallHash($_POST['lf_linkdate']); // Scroll to the link which has been edited.
1360 header('Location: '.$returnurl); // After canceling, redirect to the page the user was on.
1361 exit;
1362 }
1363
1364 // -------- User clicked the "Delete" button when editing a link: Delete link from database.
1365 if (isset($_POST['delete_link']))
1366 {
1367 if (!tokenOk($_POST['token'])) die('Wrong token.');
1368 // We do not need to ask for confirmation:
1369 // - confirmation is handled by JavaScript
1370 // - we are protected from XSRF by the token.
1371 $linkdate=$_POST['lf_linkdate'];
1372 unset($LINKSDB[$linkdate]);
1373 $LINKSDB->savedb(); // save to disk
1374
1375 // If we are called from the bookmarklet, we must close the popup:
1376 if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) { echo '<script>self.close();</script>'; exit; }
1377 // Pick where we're going to redirect
1378 // =============================================================
1379 // Basically, we can't redirect to where we were previously if it was a permalink
1380 // or an edit_link, because it would 404.
1381 // Cases:
1382 // - / : nothing in $_GET, redirect to self
1383 // - /?page : redirect to self
1384 // - /?searchterm : redirect to self (there might be other links)
1385 // - /?searchtags : redirect to self
1386 // - /permalink : redirect to / (the link does not exist anymore)
1387 // - /?edit_link : redirect to / (the link does not exist anymore)
1388 // PHP treats the permalink as a $_GET variable, so we need to check if every condition for self
1389 // redirect is not satisfied, and only then redirect to /
1390 $location = "?";
1391 // Self redirection
1392 if (count($_GET) == 0 ||
1393 isset($_GET['page']) ||
1394 isset($_GET['searchterm']) ||
1395 isset($_GET['searchtags'])) {
1396
1397 if (isset($_POST['returnurl'])) {
1398 $location = $_POST['returnurl']; // Handle redirects given by the form
1399 }
1400
1401 if ($location === "?" &&
1402 isset($_SERVER['HTTP_REFERER'])) { // Handle HTTP_REFERER in case we're not coming from the same place.
1403 $location = $_SERVER['HTTP_REFERER'];
1404 }
1405 }
1406
1407 header('Location: ' . $location); // After deleting the link, redirect to appropriate location
1408 exit;
1409 }
1410
1411 // -------- User clicked the "EDIT" button on a link: Display link edit form.
1412 if (isset($_GET['edit_link']))
1413 {
1414 $link = $LINKSDB[$_GET['edit_link']]; // Read database
1415 if (!$link) { header('Location: ?'); exit; } // Link not found in database.
1416 $PAGE = new pageBuilder;
1417 $PAGE->assign('linkcount',count($LINKSDB));
1418 $PAGE->assign('link',$link);
1419 $PAGE->assign('link_is_new',false);
1420 $PAGE->assign('token',getToken()); // XSRF protection.
1421 $PAGE->assign('http_referer',(isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''));
1422 $PAGE->assign('tags', $LINKSDB->allTags());
1423 $PAGE->renderPage('editlink');
1424 exit;
1425 }
1426
1427 // -------- User want to post a new link: Display link edit form.
1428 if (isset($_GET['post']))
1429 {
1430 $url=$_GET['post'];
1431
1432
1433 // We remove the annoying parameters added by FeedBurner, GoogleFeedProxy, Facebook...
1434 $annoyingpatterns = array('/[\?&]utm_source=[^&]*/',
1435 '/[\?&]utm_campaign=[^&]*/',
1436 '/[\?&]utm_medium=[^&]*/',
1437 '/#xtor=RSS-[^&]*/',
1438 '/[\?&]fb_[^&]*/',
1439 '/[\?&]__scoop[^&]*/',
1440 '/#tk\.rss_all\?/',
1441 '/[\?&]action_ref_map=[^&]*/',
1442 '/[\?&]action_type_map=[^&]*/',
1443 '/[\?&]action_object_map=[^&]*/',
1444 '/[\?&]utm_content=[^&]*/',
1445 '/[\?&]fb=[^&]*/',
1446 '/[\?&]xtor=[^&]*/'
1447 );
1448 foreach($annoyingpatterns as $pattern)
1449 {
1450 $url = preg_replace($pattern, "", $url);
1451 }
1452
1453 $link_is_new = false;
1454 $link = $LINKSDB->getLinkFromUrl($url); // Check if URL is not already in database (in this case, we will edit the existing link)
1455 if (!$link)
1456 {
1457 $link_is_new = true; // This is a new link
1458 $linkdate = strval(date('Ymd_His'));
1459 $title = (empty($_GET['title']) ? '' : $_GET['title'] ); // Get title if it was provided in URL (by the bookmarklet).
1460 $description = (empty($_GET['description']) ? '' : $_GET['description']); // Get description if it was provided in URL (by the bookmarklet). [Bronco added that]
1461 $tags = (empty($_GET['tags']) ? '' : $_GET['tags'] ); // Get tags if it was provided in URL
1462 $private = (!empty($_GET['private']) && $_GET['private'] === "1" ? 1 : 0); // Get private if it was provided in URL
1463 if (($url!='') && parse_url($url,PHP_URL_SCHEME)=='') $url = 'http://'.$url;
1464 // If this is an HTTP link, we try go get the page to extract the title (otherwise we will to straight to the edit form.)
1465 if (empty($title) && parse_url($url,PHP_URL_SCHEME)=='http')
1466 {
1467 list($status,$headers,$data) = getHTTP($url,4); // Short timeout to keep the application responsive.
1468 // FIXME: Decode charset according to specified in either 1) HTTP response headers or 2) <head> in html
1469 if (strpos($status,'200 OK')!==false)
1470 {
1471 // Look for charset in html header.
1472 preg_match('#<meta .*charset=.*>#Usi', $data, $meta);
1473
1474 // If found, extract encoding.
1475 if (!empty($meta[0]))
1476 {
1477 // Get encoding specified in header.
1478 preg_match('#charset="?(.*)"#si', $meta[0], $enc);
1479 // If charset not found, use utf-8.
1480 $html_charset = (!empty($enc[1])) ? strtolower($enc[1]) : 'utf-8';
1481 }
1482 else { $html_charset = 'utf-8'; }
1483
1484 // Extract title
1485 $title = html_extract_title($data);
1486 if (!empty($title))
1487 {
1488 // Re-encode title in utf-8 if necessary.
1489 $title = ($html_charset == 'iso-8859-1') ? utf8_encode($title) : $title;
1490 }
1491 }
1492 }
1493 if ($url=='') // In case of empty URL, this is just a text (with a link that points to itself)
1494 {
1495 $url='?'.smallHash($linkdate);
1496 $title='Note: ';
1497 }
1498 $link = array('linkdate'=>$linkdate,'title'=>$title,'url'=>$url,'description'=>$description,'tags'=>$tags,'private'=>$private);
1499 }
1500
1501 $PAGE = new pageBuilder;
1502 $PAGE->assign('linkcount',count($LINKSDB));
1503 $PAGE->assign('link',$link);
1504 $PAGE->assign('link_is_new',$link_is_new);
1505 $PAGE->assign('token',getToken()); // XSRF protection.
1506 $PAGE->assign('http_referer',(isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : ''));
1507 $PAGE->assign('source',(isset($_GET['source']) ? $_GET['source'] : ''));
1508 $PAGE->assign('tags', $LINKSDB->allTags());
1509 $PAGE->renderPage('editlink');
1510 exit;
1511 }
1512
1513 // -------- Export as Netscape Bookmarks HTML file.
1514 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=export'))
1515 {
1516 if (empty($_GET['what']))
1517 {
1518 $PAGE = new pageBuilder;
1519 $PAGE->assign('linkcount',count($LINKSDB));
1520 $PAGE->renderPage('export');
1521 exit;
1522 }
1523 $exportWhat=$_GET['what'];
1524 if (!array_intersect(array('all','public','private'),array($exportWhat))) die('What are you trying to export???');
1525
1526 header('Content-Type: text/html; charset=utf-8');
1527 header('Content-disposition: attachment; filename=bookmarks_'.$exportWhat.'_'.strval(date('Ymd_His')).'.html');
1528 $currentdate=date('Y/m/d H:i:s');
1529 echo <<<HTML
1530<!DOCTYPE NETSCAPE-Bookmark-file-1>
1531<!-- This is an automatically generated file.
1532 It will be read and overwritten.
1533 DO NOT EDIT! -->
1534<!-- Shaarli {$exportWhat} bookmarks export on {$currentdate} -->
1535<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8">
1536<TITLE>Bookmarks</TITLE>
1537<H1>Bookmarks</H1>
1538HTML;
1539 foreach($LINKSDB as $link)
1540 {
1541 if ($exportWhat=='all' ||
1542 ($exportWhat=='private' && $link['private']!=0) ||
1543 ($exportWhat=='public' && $link['private']==0))
1544 {
1545 echo '<DT><A HREF="'.$link['url'].'" ADD_DATE="'.linkdate2timestamp($link['linkdate']).'" PRIVATE="'.$link['private'].'"';
1546 if ($link['tags']!='') echo ' TAGS="'.str_replace(' ',',',$link['tags']).'"';
1547 echo '>'.$link['title']."</A>\n";
1548 if ($link['description']!='') echo '<DD>'.$link['description']."\n";
1549 }
1550 }
1551 exit;
1552 }
1553
1554 // -------- User is uploading a file for import
1555 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=upload'))
1556 {
1557 // If file is too big, some form field may be missing.
1558 if (!isset($_POST['token']) || (!isset($_FILES)) || (isset($_FILES['filetoupload']['size']) && $_FILES['filetoupload']['size']==0))
1559 {
1560 $returnurl = ( empty($_SERVER['HTTP_REFERER']) ? '?' : $_SERVER['HTTP_REFERER'] );
1561 echo '<script>alert("The file you are trying to upload is probably bigger than what this webserver can accept ('.getMaxFileSize().' bytes). Please upload in smaller chunks.");document.location=\''.escape($returnurl).'\';</script>';
1562 exit;
1563 }
1564 if (!tokenOk($_POST['token'])) die('Wrong token.');
1565 importFile();
1566 exit;
1567 }
1568
1569 // -------- Show upload/import dialog:
1570 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=import'))
1571 {
1572 $PAGE = new pageBuilder;
1573 $PAGE->assign('linkcount',count($LINKSDB));
1574 $PAGE->assign('token',getToken());
1575 $PAGE->assign('maxfilesize',getMaxFileSize());
1576 $PAGE->renderPage('import');
1577 exit;
1578 }
1579
1580 // -------- Otherwise, simply display search form and links:
1581 $PAGE = new pageBuilder;
1582 buildLinkList($PAGE,$LINKSDB); // Compute list of links to display
1583 $PAGE->renderPage('linklist');
1584 exit;
1585}
1586
1587// -----------------------------------------------------------------------------------------------
1588// Process the import file form.
1589function importFile()
1590{
1591 if (!(isLoggedIn() || $GLOBALS['config']['OPEN_SHAARLI'])) { die('Not allowed.'); }
1592 $LINKSDB = new LinkDB(
1593 $GLOBALS['config']['DATASTORE'],
1594 isLoggedIn() || $GLOBALS['config']['OPEN_SHAARLI'],
1595 $GLOBALS['config']['HIDE_PUBLIC_LINKS']
1596 );
1597 $filename=$_FILES['filetoupload']['name'];
1598 $filesize=$_FILES['filetoupload']['size'];
1599 $data=file_get_contents($_FILES['filetoupload']['tmp_name']);
1600 $private = (empty($_POST['private']) ? 0 : 1); // Should the links be imported as private?
1601 $overwrite = !empty($_POST['overwrite']) ; // Should the imported links overwrite existing ones?
1602 $import_count=0;
1603
1604 // Sniff file type:
1605 $type='unknown';
1606 if (startsWith($data,'<!DOCTYPE NETSCAPE-Bookmark-file-1>')) $type='netscape'; // Netscape bookmark file (aka Firefox).
1607
1608 // Then import the bookmarks.
1609 if ($type=='netscape')
1610 {
1611 // This is a standard Netscape-style bookmark file.
1612 // This format is supported by all browsers (except IE, of course), also Delicious, Diigo and others.
1613 foreach(explode('<DT>',$data) as $html) // explode is very fast
1614 {
1615 $link = array('linkdate'=>'','title'=>'','url'=>'','description'=>'','tags'=>'','private'=>0);
1616 $d = explode('<DD>',$html);
1617 if (startswith($d[0],'<A '))
1618 {
1619 $link['description'] = (isset($d[1]) ? html_entity_decode(trim($d[1]),ENT_QUOTES,'UTF-8') : ''); // Get description (optional)
1620 preg_match('!<A .*?>(.*?)</A>!i',$d[0],$matches); $link['title'] = (isset($matches[1]) ? trim($matches[1]) : ''); // Get title
1621 $link['title'] = html_entity_decode($link['title'],ENT_QUOTES,'UTF-8');
1622 preg_match_all('! ([A-Z_]+)=\"(.*?)"!i',$html,$matches,PREG_SET_ORDER); // Get all other attributes
1623 $raw_add_date=0;
1624 foreach($matches as $m)
1625 {
1626 $attr=$m[1]; $value=$m[2];
1627 if ($attr=='HREF') $link['url']=html_entity_decode($value,ENT_QUOTES,'UTF-8');
1628 elseif ($attr=='ADD_DATE')
1629 {
1630 $raw_add_date=intval($value);
1631 if ($raw_add_date>30000000000) $raw_add_date/=1000; //If larger than year 2920, then was likely stored in milliseconds instead of seconds
1632 }
1633 elseif ($attr=='PRIVATE') $link['private']=($value=='0'?0:1);
1634 elseif ($attr=='TAGS') $link['tags']=html_entity_decode(str_replace(',',' ',$value),ENT_QUOTES,'UTF-8');
1635 }
1636 if ($link['url']!='')
1637 {
1638 if ($private==1) $link['private']=1;
1639 $dblink = $LINKSDB->getLinkFromUrl($link['url']); // See if the link is already in database.
1640 if ($dblink==false)
1641 { // Link not in database, let's import it...
1642 if (empty($raw_add_date)) $raw_add_date=time(); // In case of shitty bookmark file with no ADD_DATE
1643
1644 // Make sure date/time is not already used by another link.
1645 // (Some bookmark files have several different links with the same ADD_DATE)
1646 // We increment date by 1 second until we find a date which is not used in DB.
1647 // (so that links that have the same date/time are more or less kept grouped by date, but do not conflict.)
1648 while (!empty($LINKSDB[date('Ymd_His',$raw_add_date)])) { $raw_add_date++; }// Yes, I know it's ugly.
1649 $link['linkdate']=date('Ymd_His',$raw_add_date);
1650 $LINKSDB[$link['linkdate']] = $link;
1651 $import_count++;
1652 }
1653 else // Link already present in database.
1654 {
1655 if ($overwrite)
1656 { // If overwrite is required, we import link data, except date/time.
1657 $link['linkdate']=$dblink['linkdate'];
1658 $LINKSDB[$link['linkdate']] = $link;
1659 $import_count++;
1660 }
1661 }
1662
1663 }
1664 }
1665 }
1666 $LINKSDB->savedb();
1667
1668 echo '<script>alert("File '.json_encode($filename).' ('.$filesize.' bytes) was successfully processed: '.$import_count.' links imported.");document.location=\'?\';</script>';
1669 }
1670 else
1671 {
1672 echo '<script>alert("File '.json_encode($filename).' ('.$filesize.' bytes) has an unknown file format. Nothing was imported.");document.location=\'?\';</script>';
1673 }
1674}
1675
1676// -----------------------------------------------------------------------------------------------
1677// Template for the list of links (<div id="linklist">)
1678// This function fills all the necessary fields in the $PAGE for the template 'linklist.html'
1679function buildLinkList($PAGE,$LINKSDB)
1680{
1681 // ---- Filter link database according to parameters
1682 $linksToDisplay=array();
1683 $search_type='';
1684 $search_crits='';
1685 if (isset($_GET['searchterm'])) // Fulltext search
1686 {
1687 $linksToDisplay = $LINKSDB->filterFulltext(trim($_GET['searchterm']));
1688 $search_crits=escape(trim($_GET['searchterm']));
1689 $search_type='fulltext';
1690 }
1691 elseif (isset($_GET['searchtags'])) // Search by tag
1692 {
1693 $linksToDisplay = $LINKSDB->filterTags(trim($_GET['searchtags']));
1694 $search_crits=explode(' ',escape(trim($_GET['searchtags'])));
1695 $search_type='tags';
1696 }
1697 elseif (isset($_SERVER['QUERY_STRING']) && preg_match('/[a-zA-Z0-9-_@]{6}(&.+?)?/',$_SERVER['QUERY_STRING'])) // Detect smallHashes in URL
1698 {
1699 $linksToDisplay = $LINKSDB->filterSmallHash(substr(trim($_SERVER["QUERY_STRING"], '/'),0,6));
1700 if (count($linksToDisplay)==0)
1701 {
1702 header($_SERVER["SERVER_PROTOCOL"]." 404 Not Found");
1703 echo '<h1>404 Not found.</h1>Oh crap. The link you are trying to reach does not exist or has been deleted.';
1704 echo '<br>You would mind <a href="?">clicking here</a>?';
1705 exit;
1706 }
1707 $search_type='permalink';
1708 }
1709 else
1710 $linksToDisplay = $LINKSDB; // Otherwise, display without filtering.
1711
1712
1713 // Option: Show only private links
1714 if (!empty($_SESSION['privateonly']))
1715 {
1716 $tmp = array();
1717 foreach($linksToDisplay as $linkdate=>$link)
1718 {
1719 if ($link['private']!=0) $tmp[$linkdate]=$link;
1720 }
1721 $linksToDisplay=$tmp;
1722 }
1723
1724 // ---- Handle paging.
1725 /* Can someone explain to me why you get the following error when using array_keys() on an object which implements the interface ArrayAccess???
1726 "Warning: array_keys() expects parameter 1 to be array, object given in ... "
1727 If my class implements ArrayAccess, why won't array_keys() accept it ? ( $keys=array_keys($linksToDisplay); )
1728 */
1729 $keys=array(); foreach($linksToDisplay as $key=>$value) { $keys[]=$key; } // Stupid and ugly. Thanks PHP.
1730
1731 // If there is only a single link, we change on-the-fly the title of the page.
1732 if (count($linksToDisplay)==1) $GLOBALS['pagetitle'] = $linksToDisplay[$keys[0]]['title'].' - '.$GLOBALS['title'];
1733
1734 // Select articles according to paging.
1735 $pagecount = ceil(count($keys)/$_SESSION['LINKS_PER_PAGE']);
1736 $pagecount = ($pagecount==0 ? 1 : $pagecount);
1737 $page=( empty($_GET['page']) ? 1 : intval($_GET['page']));
1738 $page = ( $page<1 ? 1 : $page );
1739 $page = ( $page>$pagecount ? $pagecount : $page );
1740 $i = ($page-1)*$_SESSION['LINKS_PER_PAGE']; // Start index.
1741 $end = $i+$_SESSION['LINKS_PER_PAGE'];
1742 $linkDisp=array(); // Links to display
1743 while ($i<$end && $i<count($keys))
1744 {
1745 $link = $linksToDisplay[$keys[$i]];
1746 $link['description']=nl2br(keepMultipleSpaces(text2clickable($link['description'])));
1747 $title=$link['title'];
1748 $classLi = $i%2!=0 ? '' : 'publicLinkHightLight';
1749 $link['class'] = ($link['private']==0 ? $classLi : 'private');
1750 $link['timestamp']=linkdate2timestamp($link['linkdate']);
1751 $taglist = explode(' ',$link['tags']);
1752 uasort($taglist, 'strcasecmp');
1753 $link['taglist']=$taglist;
1754
1755 if ($link["url"][0] === '?' && // Check for both signs of a note: starting with ? and 7 chars long. I doubt that you'll post any links that look like this.
1756 strlen($link["url"]) === 7) {
1757 $link["url"] = indexUrl() . $link["url"];
1758 }
1759
1760 $linkDisp[$keys[$i]] = $link;
1761 $i++;
1762 }
1763
1764 // Compute paging navigation
1765 $searchterm= ( empty($_GET['searchterm']) ? '' : '&searchterm='.$_GET['searchterm'] );
1766 $searchtags= ( empty($_GET['searchtags']) ? '' : '&searchtags='.$_GET['searchtags'] );
1767 $paging='';
1768 $previous_page_url=''; if ($i!=count($keys)) $previous_page_url='?page='.($page+1).$searchterm.$searchtags;
1769 $next_page_url='';if ($page>1) $next_page_url='?page='.($page-1).$searchterm.$searchtags;
1770
1771 $token = ''; if (isLoggedIn()) $token=getToken();
1772
1773 // Fill all template fields.
1774 $PAGE->assign('linkcount',count($LINKSDB));
1775 $PAGE->assign('previous_page_url',$previous_page_url);
1776 $PAGE->assign('next_page_url',$next_page_url);
1777 $PAGE->assign('page_current',$page);
1778 $PAGE->assign('page_max',$pagecount);
1779 $PAGE->assign('result_count',count($linksToDisplay));
1780 $PAGE->assign('search_type',$search_type);
1781 $PAGE->assign('search_crits',$search_crits);
1782 $PAGE->assign('redirector',empty($GLOBALS['redirector']) ? '' : $GLOBALS['redirector']); // Optional redirector URL.
1783 $PAGE->assign('token',$token);
1784 $PAGE->assign('links',$linkDisp);
1785 $PAGE->assign('tags', $LINKSDB->allTags());
1786 return;
1787}
1788
1789// Compute the thumbnail for a link.
1790//
1791// With a link to the original URL.
1792// Understands various services (youtube.com...)
1793// Input: $url = URL for which the thumbnail must be found.
1794// $href = if provided, this URL will be followed instead of $url
1795// Returns an associative array with thumbnail attributes (src,href,width,height,style,alt)
1796// Some of them may be missing.
1797// Return an empty array if no thumbnail available.
1798function computeThumbnail($url,$href=false)
1799{
1800 if (!$GLOBALS['config']['ENABLE_THUMBNAILS']) return array();
1801 if ($href==false) $href=$url;
1802
1803 // For most hosts, the URL of the thumbnail can be easily deduced from the URL of the link.
1804 // (e.g. http://www.youtube.com/watch?v=spVypYk4kto ---> http://img.youtube.com/vi/spVypYk4kto/default.jpg )
1805 // ^^^^^^^^^^^ ^^^^^^^^^^^
1806 $domain = parse_url($url,PHP_URL_HOST);
1807 if ($domain=='youtube.com' || $domain=='www.youtube.com')
1808 {
1809 parse_str(parse_url($url,PHP_URL_QUERY), $params); // Extract video ID and get thumbnail
1810 if (!empty($params['v'])) return array('src'=>'https://img.youtube.com/vi/'.$params['v'].'/default.jpg',
1811 'href'=>$href,'width'=>'120','height'=>'90','alt'=>'YouTube thumbnail');
1812 }
1813 if ($domain=='youtu.be') // Youtube short links
1814 {
1815 $path = parse_url($url,PHP_URL_PATH);
1816 return array('src'=>'https://img.youtube.com/vi'.$path.'/default.jpg',
1817 'href'=>$href,'width'=>'120','height'=>'90','alt'=>'YouTube thumbnail');
1818 }
1819 if ($domain=='pix.toile-libre.org') // pix.toile-libre.org image hosting
1820 {
1821 parse_str(parse_url($url,PHP_URL_QUERY), $params); // Extract image filename.
1822 if (!empty($params) && !empty($params['img'])) return array('src'=>'http://pix.toile-libre.org/upload/thumb/'.urlencode($params['img']),
1823 'href'=>$href,'style'=>'max-width:120px; max-height:150px','alt'=>'pix.toile-libre.org thumbnail');
1824 }
1825
1826 if ($domain=='imgur.com')
1827 {
1828 $path = parse_url($url,PHP_URL_PATH);
1829 if (startsWith($path,'/a/')) return array(); // Thumbnails for albums are not available.
1830 if (startsWith($path,'/r/')) return array('src'=>'https://i.imgur.com/'.basename($path).'s.jpg',
1831 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
1832 if (startsWith($path,'/gallery/')) return array('src'=>'https://i.imgur.com'.substr($path,8).'s.jpg',
1833 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
1834
1835 if (substr_count($path,'/')==1) return array('src'=>'https://i.imgur.com/'.substr($path,1).'s.jpg',
1836 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
1837 }
1838 if ($domain=='i.imgur.com')
1839 {
1840 $pi = pathinfo(parse_url($url,PHP_URL_PATH));
1841 if (!empty($pi['filename'])) return array('src'=>'https://i.imgur.com/'.$pi['filename'].'s.jpg',
1842 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
1843 }
1844 if ($domain=='dailymotion.com' || $domain=='www.dailymotion.com')
1845 {
1846 if (strpos($url,'dailymotion.com/video/')!==false)
1847 {
1848 $thumburl=str_replace('dailymotion.com/video/','dailymotion.com/thumbnail/video/',$url);
1849 return array('src'=>$thumburl,
1850 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'DailyMotion thumbnail');
1851 }
1852 }
1853 if (endsWith($domain,'.imageshack.us'))
1854 {
1855 $ext=strtolower(pathinfo($url,PATHINFO_EXTENSION));
1856 if ($ext=='jpg' || $ext=='jpeg' || $ext=='png' || $ext=='gif')
1857 {
1858 $thumburl = substr($url,0,strlen($url)-strlen($ext)).'th.'.$ext;
1859 return array('src'=>$thumburl,
1860 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'imageshack.us thumbnail');
1861 }
1862 }
1863
1864 // Some other hosts are SLOW AS HELL and usually require an extra HTTP request to get the thumbnail URL.
1865 // So we deport the thumbnail generation in order not to slow down page generation
1866 // (and we also cache the thumbnail)
1867
1868 if (!$GLOBALS['config']['ENABLE_LOCALCACHE']) return array(); // If local cache is disabled, no thumbnails for services which require the use a local cache.
1869
1870 if ($domain=='flickr.com' || endsWith($domain,'.flickr.com')
1871 || $domain=='vimeo.com'
1872 || $domain=='ted.com' || endsWith($domain,'.ted.com')
1873 || $domain=='xkcd.com' || endsWith($domain,'.xkcd.com')
1874 )
1875 {
1876 if ($domain=='vimeo.com')
1877 { // Make sure this vimeo URL points to a video (/xxx... where xxx is numeric)
1878 $path = parse_url($url,PHP_URL_PATH);
1879 if (!preg_match('!/\d+.+?!',$path)) return array(); // This is not a single video URL.
1880 }
1881 if ($domain=='xkcd.com' || endsWith($domain,'.xkcd.com'))
1882 { // Make sure this URL points to a single comic (/xxx... where xxx is numeric)
1883 $path = parse_url($url,PHP_URL_PATH);
1884 if (!preg_match('!/\d+.+?!',$path)) return array();
1885 }
1886 if ($domain=='ted.com' || endsWith($domain,'.ted.com'))
1887 { // Make sure this TED URL points to a video (/talks/...)
1888 $path = parse_url($url,PHP_URL_PATH);
1889 if ("/talks/" !== substr($path,0,7)) return array(); // This is not a single video URL.
1890 }
1891 $sign = hash_hmac('sha256', $url, $GLOBALS['salt']); // We use the salt to sign data (it's random, secret, and specific to each installation)
1892 return array('src'=>indexUrl().'?do=genthumbnail&hmac='.$sign.'&url='.urlencode($url),
1893 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'thumbnail');
1894 }
1895
1896 // For all other, we try to make a thumbnail of links ending with .jpg/jpeg/png/gif
1897 // Technically speaking, we should download ALL links and check their Content-Type to see if they are images.
1898 // But using the extension will do.
1899 $ext=strtolower(pathinfo($url,PATHINFO_EXTENSION));
1900 if ($ext=='jpg' || $ext=='jpeg' || $ext=='png' || $ext=='gif')
1901 {
1902 $sign = hash_hmac('sha256', $url, $GLOBALS['salt']); // We use the salt to sign data (it's random, secret, and specific to each installation)
1903 return array('src'=>indexUrl().'?do=genthumbnail&hmac='.$sign.'&url='.urlencode($url),
1904 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'thumbnail');
1905 }
1906 return array(); // No thumbnail.
1907
1908}
1909
1910
1911// Returns the HTML code to display a thumbnail for a link
1912// with a link to the original URL.
1913// Understands various services (youtube.com...)
1914// Input: $url = URL for which the thumbnail must be found.
1915// $href = if provided, this URL will be followed instead of $url
1916// Returns '' if no thumbnail available.
1917function thumbnail($url,$href=false)
1918{
1919 $t = computeThumbnail($url,$href);
1920 if (count($t)==0) return ''; // Empty array = no thumbnail for this URL.
1921
1922 $html='<a href="'.escape($t['href']).'"><img src="'.escape($t['src']).'"';
1923 if (!empty($t['width'])) $html.=' width="'.escape($t['width']).'"';
1924 if (!empty($t['height'])) $html.=' height="'.escape($t['height']).'"';
1925 if (!empty($t['style'])) $html.=' style="'.escape($t['style']).'"';
1926 if (!empty($t['alt'])) $html.=' alt="'.escape($t['alt']).'"';
1927 $html.='></a>';
1928 return $html;
1929}
1930
1931// Returns the HTML code to display a thumbnail for a link
1932// for the picture wall (using lazy image loading)
1933// Understands various services (youtube.com...)
1934// Input: $url = URL for which the thumbnail must be found.
1935// $href = if provided, this URL will be followed instead of $url
1936// Returns '' if no thumbnail available.
1937function lazyThumbnail($url,$href=false)
1938{
1939 $t = computeThumbnail($url,$href);
1940 if (count($t)==0) return ''; // Empty array = no thumbnail for this URL.
1941
1942 $html='<a href="'.escape($t['href']).'">';
1943
1944 // Lazy image
1945 $html.='<img class="b-lazy" src="#" data-src="'.escape($t['src']).'"';
1946
1947 if (!empty($t['width'])) $html.=' width="'.escape($t['width']).'"';
1948 if (!empty($t['height'])) $html.=' height="'.escape($t['height']).'"';
1949 if (!empty($t['style'])) $html.=' style="'.escape($t['style']).'"';
1950 if (!empty($t['alt'])) $html.=' alt="'.escape($t['alt']).'"';
1951 $html.='>';
1952
1953 // No-JavaScript fallback.
1954 $html.='<noscript><img src="'.escape($t['src']).'"';
1955 if (!empty($t['width'])) $html.=' width="'.escape($t['width']).'"';
1956 if (!empty($t['height'])) $html.=' height="'.escape($t['height']).'"';
1957 if (!empty($t['style'])) $html.=' style="'.escape($t['style']).'"';
1958 if (!empty($t['alt'])) $html.=' alt="'.escape($t['alt']).'"';
1959 $html.='></noscript></a>';
1960
1961 return $html;
1962}
1963
1964
1965// -----------------------------------------------------------------------------------------------
1966// Installation
1967// This function should NEVER be called if the file data/config.php exists.
1968function install()
1969{
1970 // On free.fr host, make sure the /sessions directory exists, otherwise login will not work.
1971 if (endsWith($_SERVER['HTTP_HOST'],'.free.fr') && !is_dir($_SERVER['DOCUMENT_ROOT'].'/sessions')) mkdir($_SERVER['DOCUMENT_ROOT'].'/sessions',0705);
1972
1973
1974 // This part makes sure sessions works correctly.
1975 // (Because on some hosts, session.save_path may not be set correctly,
1976 // or we may not have write access to it.)
1977 if (isset($_GET['test_session']) && ( !isset($_SESSION) || !isset($_SESSION['session_tested']) || $_SESSION['session_tested']!='Working'))
1978 { // Step 2: Check if data in session is correct.
1979 echo '<pre>Sessions do not seem to work correctly on your server.<br>';
1980 echo 'Make sure the variable session.save_path is set correctly in your php config, and that you have write access to it.<br>';
1981 echo 'It currently points to '.session_save_path().'<br>';
1982 echo 'Check that the hostname used to access Shaarli contains a dot. On some browsers, accessing your server via a hostname like \'localhost\' or any custom hostname without a dot causes cookie storage to fail. We recommend accessing your server via it\'s IP address or Fully Qualified Domain Name.<br>';
1983 echo '<br><a href="?">Click to try again.</a></pre>';
1984 die;
1985 }
1986 if (!isset($_SESSION['session_tested']))
1987 { // Step 1 : Try to store data in session and reload page.
1988 $_SESSION['session_tested'] = 'Working'; // Try to set a variable in session.
1989 header('Location: '.indexUrl().'?test_session'); // Redirect to check stored data.
1990 }
1991 if (isset($_GET['test_session']))
1992 { // Step 3: Sessions are OK. Remove test parameter from URL.
1993 header('Location: '.indexUrl());
1994 }
1995
1996
1997 if (!empty($_POST['setlogin']) && !empty($_POST['setpassword']))
1998 {
1999 $tz = 'UTC';
2000 if (!empty($_POST['continent']) && !empty($_POST['city']))
2001 if (isTZvalid($_POST['continent'],$_POST['city']))
2002 $tz = $_POST['continent'].'/'.$_POST['city'];
2003 $GLOBALS['timezone'] = $tz;
2004 // Everything is ok, let's create config file.
2005 $GLOBALS['login'] = $_POST['setlogin'];
2006 $GLOBALS['salt'] = sha1(uniqid('',true).'_'.mt_rand()); // Salt renders rainbow-tables attacks useless.
2007 $GLOBALS['hash'] = sha1($_POST['setpassword'].$GLOBALS['login'].$GLOBALS['salt']);
2008 $GLOBALS['title'] = (empty($_POST['title']) ? 'Shared links on '.escape(indexUrl()) : $_POST['title'] );
2009 $GLOBALS['config']['ENABLE_UPDATECHECK'] = !empty($_POST['updateCheck']);
2010 writeConfig();
2011 echo '<script>alert("Shaarli is now configured. Please enter your login/password and start shaaring your links!");document.location=\'?do=login\';</script>';
2012 exit;
2013 }
2014
2015 // Display config form:
2016 list($timezone_form,$timezone_js) = templateTZform();
2017 $timezone_html=''; if ($timezone_form!='') $timezone_html='<tr><td><b>Timezone:</b></td><td>'.$timezone_form.'</td></tr>';
2018
2019 $PAGE = new pageBuilder;
2020 $PAGE->assign('timezone_html',$timezone_html);
2021 $PAGE->assign('timezone_js',$timezone_js);
2022 $PAGE->renderPage('install');
2023 exit;
2024}
2025
2026// Generates the timezone selection form and JavaScript.
2027// Input: (optional) current timezone (can be 'UTC/UTC'). It will be pre-selected.
2028// Output: array(html,js)
2029// Example: list($htmlform,$js) = templateTZform('Europe/Paris'); // Europe/Paris pre-selected.
2030// Returns array('','') if server does not support timezones list. (e.g. PHP 5.1 on free.fr)
2031function templateTZform($ptz=false)
2032{
2033 if (function_exists('timezone_identifiers_list')) // because of old PHP version (5.1) which can be found on free.fr
2034 {
2035 // Try to split the provided timezone.
2036 if ($ptz==false) { $l=timezone_identifiers_list(); $ptz=$l[0]; }
2037 $spos=strpos($ptz,'/'); $pcontinent=substr($ptz,0,$spos); $pcity=substr($ptz,$spos+1);
2038
2039 // Display config form:
2040 $timezone_form = '';
2041 $timezone_js = '';
2042 // The list is in the form "Europe/Paris", "America/Argentina/Buenos_Aires"...
2043 // We split the list in continents/cities.
2044 $continents = array();
2045 $cities = array();
2046 foreach(timezone_identifiers_list() as $tz)
2047 {
2048 if ($tz=='UTC') $tz='UTC/UTC';
2049 $spos = strpos($tz,'/');
2050 if ($spos!==false)
2051 {
2052 $continent=substr($tz,0,$spos); $city=substr($tz,$spos+1);
2053 $continents[$continent]=1;
2054 if (!isset($cities[$continent])) $cities[$continent]='';
2055 $cities[$continent].='<option value="'.$city.'"'.($pcity==$city?' selected':'').'>'.$city.'</option>';
2056 }
2057 }
2058 $continents_html = '';
2059 $continents = array_keys($continents);
2060 foreach($continents as $continent)
2061 $continents_html.='<option value="'.$continent.'"'.($pcontinent==$continent?' selected':'').'>'.$continent.'</option>';
2062 $cities_html = $cities[$pcontinent];
2063 $timezone_form = "Continent: <select name=\"continent\" id=\"continent\" onChange=\"onChangecontinent();\">${continents_html}</select>";
2064 $timezone_form .= "&nbsp;&nbsp;&nbsp;&nbsp;City: <select name=\"city\" id=\"city\">${cities[$pcontinent]}</select><br />";
2065 $timezone_js = "<script>";
2066 $timezone_js .= "function onChangecontinent(){document.getElementById(\"city\").innerHTML = citiescontinent[document.getElementById(\"continent\").value];}";
2067 $timezone_js .= "var citiescontinent = ".json_encode($cities).";" ;
2068 $timezone_js .= "</script>" ;
2069 return array($timezone_form,$timezone_js);
2070 }
2071 return array('','');
2072}
2073
2074// Tells if a timezone is valid or not.
2075// If not valid, returns false.
2076// If system does not support timezone list, returns false.
2077function isTZvalid($continent,$city)
2078{
2079 $tz = $continent.'/'.$city;
2080 if (function_exists('timezone_identifiers_list')) // because of old PHP version (5.1) which can be found on free.fr
2081 {
2082 if (in_array($tz, timezone_identifiers_list())) // it's a valid timezone?
2083 return true;
2084 }
2085 return false;
2086}
2087if (!function_exists('json_encode')) {
2088 function json_encode($data) {
2089 switch ($type = gettype($data)) {
2090 case 'NULL':
2091 return 'null';
2092 case 'boolean':
2093 return ($data ? 'true' : 'false');
2094 case 'integer':
2095 case 'double':
2096 case 'float':
2097 return $data;
2098 case 'string':
2099 return '"' . addslashes($data) . '"';
2100 case 'object':
2101 $data = get_object_vars($data);
2102 case 'array':
2103 $output_index_count = 0;
2104 $output_indexed = array();
2105 $output_associative = array();
2106 foreach ($data as $key => $value) {
2107 $output_indexed[] = json_encode($value);
2108 $output_associative[] = json_encode($key) . ':' . json_encode($value);
2109 if ($output_index_count !== NULL && $output_index_count++ !== $key) {
2110 $output_index_count = NULL;
2111 }
2112 }
2113 if ($output_index_count !== NULL) {
2114 return '[' . implode(',', $output_indexed) . ']';
2115 } else {
2116 return '{' . implode(',', $output_associative) . '}';
2117 }
2118 default:
2119 return ''; // Not supported
2120 }
2121 }
2122}
2123
2124// Re-write configuration file according to globals.
2125// Requires some $GLOBALS to be set (login,hash,salt,title).
2126// If the config file cannot be saved, an error message is displayed and the user is redirected to "Tools" menu.
2127// (otherwise, the function simply returns.)
2128function writeConfig()
2129{
2130 if (is_file($GLOBALS['config']['CONFIG_FILE']) && !isLoggedIn()) die('You are not authorized to alter config.'); // Only logged in user can alter config.
2131 $config='<?php $GLOBALS[\'login\']='.var_export($GLOBALS['login'],true).'; $GLOBALS[\'hash\']='.var_export($GLOBALS['hash'],true).'; $GLOBALS[\'salt\']='.var_export($GLOBALS['salt'],true).'; ';
2132 $config .='$GLOBALS[\'timezone\']='.var_export($GLOBALS['timezone'],true).'; date_default_timezone_set('.var_export($GLOBALS['timezone'],true).'); $GLOBALS[\'title\']='.var_export($GLOBALS['title'],true).';';
2133 $config .= '$GLOBALS[\'titleLink\']='.var_export($GLOBALS['titleLink'],true).'; ';
2134 $config .= '$GLOBALS[\'redirector\']='.var_export($GLOBALS['redirector'],true).'; ';
2135 $config .= '$GLOBALS[\'disablesessionprotection\']='.var_export($GLOBALS['disablesessionprotection'],true).'; ';
2136 $config .= '$GLOBALS[\'disablejquery\']='.var_export($GLOBALS['disablejquery'],true).'; ';
2137 $config .= '$GLOBALS[\'privateLinkByDefault\']='.var_export($GLOBALS['privateLinkByDefault'],true).'; ';
2138 $config .= '$GLOBALS[\'config\'][\'ENABLE_RSS_PERMALINKS\']='.var_export($GLOBALS['config']['ENABLE_RSS_PERMALINKS'], true).'; ';
2139 $config .= '$GLOBALS[\'config\'][\'ENABLE_UPDATECHECK\']='.var_export($GLOBALS['config']['ENABLE_UPDATECHECK'], true).'; ';
2140 $config .= '$GLOBALS[\'config\'][\'HIDE_PUBLIC_LINKS\']='.var_export($GLOBALS['config']['HIDE_PUBLIC_LINKS'], true).'; ';
2141 $config .= ' ?>';
2142 if (!file_put_contents($GLOBALS['config']['CONFIG_FILE'],$config) || strcmp(file_get_contents($GLOBALS['config']['CONFIG_FILE']),$config)!=0)
2143 {
2144 echo '<script>alert("Shaarli could not create the config file. Please make sure Shaarli has the right to write in the folder is it installed in.");document.location=\'?\';</script>';
2145 exit;
2146 }
2147}
2148
2149/* Because some f*cking services like flickr require an extra HTTP request to get the thumbnail URL,
2150 I have deported the thumbnail URL code generation here, otherwise this would slow down page generation.
2151 The following function takes the URL a link (e.g. a flickr page) and return the proper thumbnail.
2152 This function is called by passing the URL:
2153 http://mywebsite.com/shaarli/?do=genthumbnail&hmac=[HMAC]&url=[URL]
2154 [URL] is the URL of the link (e.g. a flickr page)
2155 [HMAC] is the signature for the [URL] (so that these URL cannot be forged).
2156 The function below will fetch the image from the webservice and store it in the cache.
2157*/
2158function genThumbnail()
2159{
2160 // Make sure the parameters in the URL were generated by us.
2161 $sign = hash_hmac('sha256', $_GET['url'], $GLOBALS['salt']);
2162 if ($sign!=$_GET['hmac']) die('Naughty boy!');
2163
2164 // Let's see if we don't already have the image for this URL in the cache.
2165 $thumbname=hash('sha1',$_GET['url']).'.jpg';
2166 if (is_file($GLOBALS['config']['CACHEDIR'].'/'.$thumbname))
2167 { // We have the thumbnail, just serve it:
2168 header('Content-Type: image/jpeg');
2169 echo file_get_contents($GLOBALS['config']['CACHEDIR'].'/'.$thumbname);
2170 return;
2171 }
2172 // We may also serve a blank image (if service did not respond)
2173 $blankname=hash('sha1',$_GET['url']).'.gif';
2174 if (is_file($GLOBALS['config']['CACHEDIR'].'/'.$blankname))
2175 {
2176 header('Content-Type: image/gif');
2177 echo file_get_contents($GLOBALS['config']['CACHEDIR'].'/'.$blankname);
2178 return;
2179 }
2180
2181 // Otherwise, generate the thumbnail.
2182 $url = $_GET['url'];
2183 $domain = parse_url($url,PHP_URL_HOST);
2184
2185 if ($domain=='flickr.com' || endsWith($domain,'.flickr.com'))
2186 {
2187 // Crude replacement to handle new flickr domain policy (They prefer www. now)
2188 $url = str_replace('http://flickr.com/','http://www.flickr.com/',$url);
2189
2190 // Is this a link to an image, or to a flickr page ?
2191 $imageurl='';
2192 if (endswith(parse_url($url,PHP_URL_PATH),'.jpg'))
2193 { // This is a direct link to an image. e.g. http://farm1.staticflickr.com/5/5921913_ac83ed27bd_o.jpg
2194 preg_match('!(http://farm\d+\.staticflickr\.com/\d+/\d+_\w+_)\w.jpg!',$url,$matches);
2195 if (!empty($matches[1])) $imageurl=$matches[1].'m.jpg';
2196 }
2197 else // This is a flickr page (html)
2198 {
2199 list($httpstatus,$headers,$data) = getHTTP($url,20); // Get the flickr html page.
2200 if (strpos($httpstatus,'200 OK')!==false)
2201 {
2202 // flickr now nicely provides the URL of the thumbnail in each flickr page.
2203 preg_match('!<link rel=\"image_src\" href=\"(.+?)\"!',$data,$matches);
2204 if (!empty($matches[1])) $imageurl=$matches[1];
2205
2206 // In albums (and some other pages), the link rel="image_src" is not provided,
2207 // but flickr provides:
2208 // <meta property="og:image" content="http://farm4.staticflickr.com/3398/3239339068_25d13535ff_z.jpg" />
2209 if ($imageurl=='')
2210 {
2211 preg_match('!<meta property=\"og:image\" content=\"(.+?)\"!',$data,$matches);
2212 if (!empty($matches[1])) $imageurl=$matches[1];
2213 }
2214 }
2215 }
2216
2217 if ($imageurl!='')
2218 { // Let's download the image.
2219 list($httpstatus,$headers,$data) = getHTTP($imageurl,10); // Image is 240x120, so 10 seconds to download should be enough.
2220 if (strpos($httpstatus,'200 OK')!==false)
2221 {
2222 file_put_contents($GLOBALS['config']['CACHEDIR'].'/'.$thumbname,$data); // Save image to cache.
2223 header('Content-Type: image/jpeg');
2224 echo $data;
2225 return;
2226 }
2227 }
2228 }
2229
2230 elseif ($domain=='vimeo.com' )
2231 {
2232 // This is more complex: we have to perform a HTTP request, then parse the result.
2233 // Maybe we should deport this to JavaScript ? Example: http://stackoverflow.com/questions/1361149/get-img-thumbnails-from-vimeo/4285098#4285098
2234 $vid = substr(parse_url($url,PHP_URL_PATH),1);
2235 list($httpstatus,$headers,$data) = getHTTP('https://vimeo.com/api/v2/video/'.escape($vid).'.php',5);
2236 if (strpos($httpstatus,'200 OK')!==false)
2237 {
2238 $t = unserialize($data);
2239 $imageurl = $t[0]['thumbnail_medium'];
2240 // Then we download the image and serve it to our client.
2241 list($httpstatus,$headers,$data) = getHTTP($imageurl,10);
2242 if (strpos($httpstatus,'200 OK')!==false)
2243 {
2244 file_put_contents($GLOBALS['config']['CACHEDIR'].'/'.$thumbname,$data); // Save image to cache.
2245 header('Content-Type: image/jpeg');
2246 echo $data;
2247 return;
2248 }
2249 }
2250 }
2251
2252 elseif ($domain=='ted.com' || endsWith($domain,'.ted.com'))
2253 {
2254 // The thumbnail for TED talks is located in the <link rel="image_src" [...]> tag on that page
2255 // http://www.ted.com/talks/mikko_hypponen_fighting_viruses_defending_the_net.html
2256 // <link rel="image_src" href="http://images.ted.com/images/ted/28bced335898ba54d4441809c5b1112ffaf36781_389x292.jpg" />
2257 list($httpstatus,$headers,$data) = getHTTP($url,5);
2258 if (strpos($httpstatus,'200 OK')!==false)
2259 {
2260 // Extract the link to the thumbnail
2261 preg_match('!link rel="image_src" href="(http://images.ted.com/images/ted/.+_\d+x\d+\.jpg)"!',$data,$matches);
2262 if (!empty($matches[1]))
2263 { // Let's download the image.
2264 $imageurl=$matches[1];
2265 list($httpstatus,$headers,$data) = getHTTP($imageurl,20); // No control on image size, so wait long enough.
2266 if (strpos($httpstatus,'200 OK')!==false)
2267 {
2268 $filepath=$GLOBALS['config']['CACHEDIR'].'/'.$thumbname;
2269 file_put_contents($filepath,$data); // Save image to cache.
2270 if (resizeImage($filepath))
2271 {
2272 header('Content-Type: image/jpeg');
2273 echo file_get_contents($filepath);
2274 return;
2275 }
2276 }
2277 }
2278 }
2279 }
2280
2281 elseif ($domain=='xkcd.com' || endsWith($domain,'.xkcd.com'))
2282 {
2283 // There is no thumbnail available for xkcd comics, so download the whole image and resize it.
2284 // http://xkcd.com/327/
2285 // <img src="http://imgs.xkcd.com/comics/exploits_of_a_mom.png" title="<BLABLA>" alt="<BLABLA>" />
2286 list($httpstatus,$headers,$data) = getHTTP($url,5);
2287 if (strpos($httpstatus,'200 OK')!==false)
2288 {
2289 // Extract the link to the thumbnail
2290 preg_match('!<img src="(http://imgs.xkcd.com/comics/.*)" title="[^s]!',$data,$matches);
2291 if (!empty($matches[1]))
2292 { // Let's download the image.
2293 $imageurl=$matches[1];
2294 list($httpstatus,$headers,$data) = getHTTP($imageurl,20); // No control on image size, so wait long enough.
2295 if (strpos($httpstatus,'200 OK')!==false)
2296 {
2297 $filepath=$GLOBALS['config']['CACHEDIR'].'/'.$thumbname;
2298 file_put_contents($filepath,$data); // Save image to cache.
2299 if (resizeImage($filepath))
2300 {
2301 header('Content-Type: image/jpeg');
2302 echo file_get_contents($filepath);
2303 return;
2304 }
2305 }
2306 }
2307 }
2308 }
2309
2310 else
2311 {
2312 // For all other domains, we try to download the image and make a thumbnail.
2313 list($httpstatus,$headers,$data) = getHTTP($url,30); // We allow 30 seconds max to download (and downloads are limited to 4 Mb)
2314 if (strpos($httpstatus,'200 OK')!==false)
2315 {
2316 $filepath=$GLOBALS['config']['CACHEDIR'].'/'.$thumbname;
2317 file_put_contents($filepath,$data); // Save image to cache.
2318 if (resizeImage($filepath))
2319 {
2320 header('Content-Type: image/jpeg');
2321 echo file_get_contents($filepath);
2322 return;
2323 }
2324 }
2325 }
2326
2327
2328 // Otherwise, return an empty image (8x8 transparent gif)
2329 $blankgif = base64_decode('R0lGODlhCAAIAIAAAP///////yH5BAEKAAEALAAAAAAIAAgAAAIHjI+py+1dAAA7');
2330 file_put_contents($GLOBALS['config']['CACHEDIR'].'/'.$blankname,$blankgif); // Also put something in cache so that this URL is not requested twice.
2331 header('Content-Type: image/gif');
2332 echo $blankgif;
2333}
2334
2335// Make a thumbnail of the image (to width: 120 pixels)
2336// Returns true if success, false otherwise.
2337function resizeImage($filepath)
2338{
2339 if (!function_exists('imagecreatefromjpeg')) return false; // GD not present: no thumbnail possible.
2340
2341 // Trick: some stupid people rename GIF as JPEG... or else.
2342 // So we really try to open each image type whatever the extension is.
2343 $header=file_get_contents($filepath,false,NULL,0,256); // Read first 256 bytes and try to sniff file type.
2344 $im=false;
2345 $i=strpos($header,'GIF8'); if (($i!==false) && ($i==0)) $im = imagecreatefromgif($filepath); // Well this is crude, but it should be enough.
2346 $i=strpos($header,'PNG'); if (($i!==false) && ($i==1)) $im = imagecreatefrompng($filepath);
2347 $i=strpos($header,'JFIF'); if ($i!==false) $im = imagecreatefromjpeg($filepath);
2348 if (!$im) return false; // Unable to open image (corrupted or not an image)
2349 $w = imagesx($im);
2350 $h = imagesy($im);
2351 $ystart = 0; $yheight=$h;
2352 if ($h>$w) { $ystart= ($h/2)-($w/2); $yheight=$w/2; }
2353 $nw = 120; // Desired width
2354 $nh = min(floor(($h*$nw)/$w),120); // Compute new width/height, but maximum 120 pixels height.
2355 // Resize image:
2356 $im2 = imagecreatetruecolor($nw,$nh);
2357 imagecopyresampled($im2, $im, 0, 0, 0, $ystart, $nw, $nh, $w, $yheight);
2358 imageinterlace($im2,true); // For progressive JPEG.
2359 $tempname=$filepath.'_TEMP.jpg';
2360 imagejpeg($im2, $tempname, 90);
2361 imagedestroy($im);
2362 imagedestroy($im2);
2363 unlink($filepath);
2364 rename($tempname,$filepath); // Overwrite original picture with thumbnail.
2365 return true;
2366}
2367
2368// Invalidate caches when the database is changed or the user logs out.
2369// (e.g. tags cache).
2370function invalidateCaches()
2371{
2372 unset($_SESSION['tags']); // Purge cache attached to session.
2373 pageCache::purgeCache(); // Purge page cache shared by sessions.
2374}
2375
2376if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=genthumbnail')) { genThumbnail(); exit; } // Thumbnail generation/cache does not need the link database.
2377if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=rss')) { showRSS(); exit; }
2378if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=atom')) { showATOM(); exit; }
2379if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=dailyrss')) { showDailyRSS(); exit; }
2380if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=daily')) { showDaily(); exit; }
2381if (!isset($_SESSION['LINKS_PER_PAGE'])) $_SESSION['LINKS_PER_PAGE']=$GLOBALS['config']['LINKS_PER_PAGE'];
2382renderPage();
2383?>
The personal, minimalist, super-fast, database free, bookmarking service - community repo