]> git.immae.eu Git - github/shaarli/Shaarli.git/blame - index.php
Merge branch 'really-hide' of https://github.com/pikzen/Shaarli into next
[github/shaarli/Shaarli.git] / index.php
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45034273 1<?php
129ff3c2 2// Shaarli 0.0.45beta - Shaare your links...
ad6c27b7 3// The personal, minimalist, super-fast, no-database Delicious clone. By sebsauvage.net
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4// http://sebsauvage.net/wiki/doku.php?id=php:shaarli
5// Licence: http://www.opensource.org/licenses/zlib-license.php
ad6c27b7 6// Requires: PHP 5.1.x (but autocomplete fields will only work if you have PHP 5.2.x)
45034273 7// -----------------------------------------------------------------------------------------------
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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
45034273 13// -----------------------------------------------------------------------------------------------
ed5b38dd 14// Hardcoded parameter (These parameters can be overwritten by creating the file /data/options.php)
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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$GLOBALS['config']['HIDE_TIMESTAMPS'] = false; // If true, the moment when links were saved are not shown to users that are not logged in.
1099d8fc 24$GLOBALS['config']['SHOW_ATOM'] = false; // If true, an extra "ATOM feed" button will be displayed in the toolbar
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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$GLOBALS['config']['PAGECACHE'] = 'pagecache'; // Page cache directory.
ad6c27b7 28$GLOBALS['config']['ENABLE_LOCALCACHE'] = true; // Enable Shaarli to store thumbnail in a local cache. Disable to reduce web space usage.
45034273 29$GLOBALS['config']['PUBSUBHUB_URL'] = ''; // PubSubHubbub support. Put an empty string to disable, or put your hub url here to enable.
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30$GLOBALS['config']['RAINTPL_TMP'] = 'tmp/' ; // Raintpl cache directory (keep the trailing slash!)
31$GLOBALS['config']['RAINTPL_TPL'] = 'tpl/' ; // Raintpl template directory (keep the trailing slash!)
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32$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
d2f51763 35$GLOBALS['config']['ARCHIVE_ORG'] = false; // For each link, add a link to an archived version on archive.org
ed5b38dd 36$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.
caee7ff9 37$GLOBALS['config']['HIDE_PUBLIC_LINKS'] = false;
45034273 38// -----------------------------------------------------------------------------------------------
ad6c27b7 39// You should not touch below (or at your own risks!)
40// Optional config file.
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41if (is_file($GLOBALS['config']['DATADIR'].'/options.php')) require($GLOBALS['config']['DATADIR'].'/options.php');
42
129ff3c2 43define('shaarli_version','0.0.45beta');
ad6c27b7 44define('PHPPREFIX','<?php /* '); // Prefix to encapsulate data in PHP code.
45define('PHPSUFFIX',' */ ?>'); // Suffix to encapsulate data in PHP code.
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46// http://server.com/x/shaarli --> /shaarli/
47define('WEB_PATH', substr($_SERVER["REQUEST_URI"], 0, 1+strrpos($_SERVER["REQUEST_URI"], '/', 0)));
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48
49// Force cookie path (but do not change lifetime)
50$cookie=session_get_cookie_params();
2d9fab88 51$cookiedir = ''; if(dirname($_SERVER['SCRIPT_NAME'])!='/') $cookiedir=dirname($_SERVER["SCRIPT_NAME"]).'/';
2f32d074 52session_set_cookie_params($cookie['lifetime'],$cookiedir,$_SERVER['SERVER_NAME']); // Set default cookie expiration and path.
45034273 53
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54// Set session parameters on server side.
55define('INACTIVITY_TIMEOUT',3600); // (in seconds). If the user does not access any page within this time, his/her session is considered expired.
56ini_set('session.use_cookies', 1); // Use cookies to store session.
ad6c27b7 57ini_set('session.use_only_cookies', 1); // Force cookies for session (phpsessionID forbidden in URL).
58ini_set('session.use_trans_sid', false); // Prevent PHP form using sessionID in URL if cookies are disabled.
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59session_name('shaarli');
60if (session_id() == '') session_start(); // Start session if needed (Some server auto-start sessions).
61
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62// PHP Settings
63ini_set('max_input_time','60'); // High execution time in case of problematic imports/exports.
64ini_set('memory_limit', '128M'); // Try to set max upload file size and read (May not work on some hosts).
65ini_set('post_max_size', '16M');
66ini_set('upload_max_filesize', '16M');
67checkphpversion();
68error_reporting(E_ALL^E_WARNING); // See all error except warnings.
69//error_reporting(-1); // See all errors (for debugging only)
70
71include "inc/rain.tpl.class.php"; //include Rain TPL
25f5c59d 72raintpl::$tpl_dir = $GLOBALS['config']['RAINTPL_TPL']; // template directory
25f5c59d 73raintpl::$cache_dir = $GLOBALS['config']['RAINTPL_TMP']; // cache directory
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74
75ob_start(); // Output buffering for the page cache.
76
77
78// In case stupid admin has left magic_quotes enabled in php.ini:
79if (get_magic_quotes_gpc())
80{
81 function stripslashes_deep($value) { $value = is_array($value) ? array_map('stripslashes_deep', $value) : stripslashes($value); return $value; }
82 $_POST = array_map('stripslashes_deep', $_POST);
83 $_GET = array_map('stripslashes_deep', $_GET);
84 $_COOKIE = array_map('stripslashes_deep', $_COOKIE);
85}
86
87// Prevent caching on client side or proxy: (yes, it's ugly)
88header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
89header("Cache-Control: no-store, no-cache, must-revalidate");
90header("Cache-Control: post-check=0, pre-check=0", false);
91header("Pragma: no-cache");
92
ad6c27b7 93// Directories creations (Note that your web host may require different rights than 705.)
60b83e7c 94if (!is_writable(realpath(dirname(__FILE__)))) die('<pre>ERROR: Shaarli does not have the right to write in its own directory.</pre>');
45034273 95
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96// Handling of old config file which do not have the new parameters.
97if (empty($GLOBALS['title'])) $GLOBALS['title']='Shared links on '.htmlspecialchars(indexUrl());
98if (empty($GLOBALS['timezone'])) $GLOBALS['timezone']=date_default_timezone_get();
8a80e4fe 99if (empty($GLOBALS['redirector'])) $GLOBALS['redirector']='';
45034273 100if (empty($GLOBALS['disablesessionprotection'])) $GLOBALS['disablesessionprotection']=false;
858c5c2b 101if (empty($GLOBALS['disablejquery'])) $GLOBALS['disablejquery']=false;
bb8f712d 102if (empty($GLOBALS['privateLinkByDefault'])) $GLOBALS['privateLinkByDefault']=false;
ebb2880d 103if (empty($GLOBALS['titleLink'])) $GLOBALS['titleLink']='?';
858c5c2b 104// I really need to rewrite Shaarli with a proper configuation manager.
45034273 105
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106// Run config screen if first run:
107if (!is_file($GLOBALS['config']['CONFIG_FILE'])) install();
108
109require $GLOBALS['config']['CONFIG_FILE']; // Read login/password hash into $GLOBALS.
110
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111// a token depending of deployment salt, user password, and the current ip
112define('STAY_SIGNED_IN_TOKEN', sha1($GLOBALS['hash'].$_SERVER["REMOTE_ADDR"].$GLOBALS['salt']));
8a80e4fe 113
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114autoLocale(); // Sniff browser language and set date format accordingly.
115header('Content-Type: text/html; charset=utf-8'); // We use UTF-8 for proper international characters handling.
116
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117//==================================================================================================
118// Checking session state (i.e. is the user still logged in)
119//==================================================================================================
120
121function setup_login_state() {
122 $userIsLoggedIn = false; // By default, we do not consider the user as logged in;
123 $loginFailure = false; // If set to true, every attempt to authenticate the user will fail. This indicates that an important condition isn't met.
124 if ($GLOBALS['config']['OPEN_SHAARLI']) {
125 $userIsLoggedIn = true;
126 }
127 if (!isset($GLOBALS['login'])) {
128 $userIsLoggedIn = false; // Shaarli is not configured yet.
129 $loginFailure = true;
130 }
131 if (isset($_COOKIE['shaarli_staySignedIn']) &&
132 $_COOKIE['shaarli_staySignedIn']===STAY_SIGNED_IN_TOKEN &&
133 !$loginFailure)
134 {
135 fillSessionInfo();
136 $userIsLoggedIn = true;
137 }
138 // If session does not exist on server side, or IP address has changed, or session has expired, logout.
139 if (empty($_SESSION['uid']) ||
140 ($GLOBALS['disablesessionprotection']==false && $_SESSION['ip']!=allIPs()) ||
141 time() >= $_SESSION['expires_on'])
142 {
143 logout();
144 $userIsLoggedIn = false;
145 $loginFailure = true;
146 }
147 if (!empty($_SESSION['longlastingsession'])) {
148 $_SESSION['expires_on']=time()+$_SESSION['longlastingsession']; // In case of "Stay signed in" checked.
149 }
150 else {
151 $_SESSION['expires_on']=time()+INACTIVITY_TIMEOUT; // Standard session expiration date.
152 }
153 if (!$loginFailure) {
154 $userIsLoggedIn = true;
155 }
156
157 return $userIsLoggedIn;
158}
159//==================================================================================================
160$userIsLoggedIn = setup_login_state();
161//==================================================================================================
162//==================================================================================================
163
ad6c27b7 164// Check PHP version
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165function checkphpversion()
166{
167 if (version_compare(PHP_VERSION, '5.1.0') < 0)
168 {
169 header('Content-Type: text/plain; charset=utf-8');
50976223 170 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.';
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171 exit;
172 }
173}
174
175// Checks if an update is available for Shaarli.
176// (at most once a day, and only for registered user.)
177// Output: '' = no new version.
178// other= the available version.
179function checkUpdate()
180{
181 if (!isLoggedIn()) return ''; // Do not check versions for visitors.
329e0768 182 if (empty($GLOBALS['config']['ENABLE_UPDATECHECK'])) return ''; // Do not check if the user doesn't want to.
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183
184 // Get latest version number at most once a day.
185 if (!is_file($GLOBALS['config']['UPDATECHECK_FILENAME']) || (filemtime($GLOBALS['config']['UPDATECHECK_FILENAME'])<time()-($GLOBALS['config']['UPDATECHECK_INTERVAL'])))
186 {
187 $version=shaarli_version;
dbcad740 188 list($httpstatus,$headers,$data) = getHTTP('https://raw.githubusercontent.com/shaarli/Shaarli/master/shaarli_version.php',2);
189 if (strpos($httpstatus,'200 OK')!==false) $version=str_replace(' */ ?>','',str_replace('<?php /* ','',$data));
ad6c27b7 190 // If failed, never mind. We don't want to bother the user with that.
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191 file_put_contents($GLOBALS['config']['UPDATECHECK_FILENAME'],$version); // touch file date
192 }
193 // Compare versions:
194 $newestversion=file_get_contents($GLOBALS['config']['UPDATECHECK_FILENAME']);
195 if (version_compare($newestversion,shaarli_version)==1) return $newestversion;
196 return '';
197}
198
199
200// -----------------------------------------------------------------------------------------------
201// Simple cache system (mainly for the RSS/ATOM feeds).
202
203class pageCache
204{
205 private $url; // Full URL of the page to cache (typically the value returned by pageUrl())
ad6c27b7 206 private $shouldBeCached; // boolean: Should this url be cached?
207 private $filename; // Name of the cache file for this url.
45034273 208
bb8f712d 209 /*
ad6c27b7 210 $url = URL (typically the value returned by pageUrl())
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211 $shouldBeCached = boolean. If false, the cache will be disabled.
212 */
213 public function __construct($url,$shouldBeCached)
214 {
215 $this->url = $url;
216 $this->filename = $GLOBALS['config']['PAGECACHE'].'/'.sha1($url).'.cache';
217 $this->shouldBeCached = $shouldBeCached;
bb8f712d 218 }
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219
220 // If the page should be cached and a cached version exists,
221 // returns the cached version (otherwise, return null).
222 public function cachedVersion()
223 {
224 if (!$this->shouldBeCached) return null;
225 if (is_file($this->filename)) { return file_get_contents($this->filename); exit; }
226 return null;
227 }
228
229 // Put a page in the cache.
230 public function cache($page)
231 {
232 if (!$this->shouldBeCached) return;
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233 file_put_contents($this->filename,$page);
234 }
235
236 // Purge the whole cache.
237 // (call with pageCache::purgeCache())
238 public static function purgeCache()
239 {
240 if (is_dir($GLOBALS['config']['PAGECACHE']))
241 {
242 $handler = opendir($GLOBALS['config']['PAGECACHE']);
64bf914a 243 if ($handler!==false)
45034273 244 {
bb8f712d 245 while (($filename = readdir($handler))!==false)
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246 {
247 if (endsWith($filename,'.cache')) { unlink($GLOBALS['config']['PAGECACHE'].'/'.$filename); }
248 }
249 closedir($handler);
250 }
251 }
252 }
253
254}
255
256
257// -----------------------------------------------------------------------------------------------
258// Log to text file
259function logm($message)
260{
261 $t = strval(date('Y/m/d_H:i:s')).' - '.$_SERVER["REMOTE_ADDR"].' - '.strval($message)."\n";
262 file_put_contents($GLOBALS['config']['DATADIR'].'/log.txt',$t,FILE_APPEND);
263}
264
265// Same as nl2br(), but escapes < and >
266function nl2br_escaped($html)
267{
268 return str_replace('>','&gt;',str_replace('<','&lt;',nl2br($html)));
269}
270
c002ca9c 271/* Returns the small hash of a string, using RFC 4648 base64url format
ad6c27b7 272 e.g. smallHash('20111006_131924') --> yZH23w
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273 Small hashes:
274 - are unique (well, as unique as crc32, at last)
275 - are always 6 characters long.
276 - only use the following characters: a-z A-Z 0-9 - _ @
277 - are NOT cryptographically secure (they CAN be forged)
278 In Shaarli, they are used as a tinyurl-like link to individual entries.
279*/
280function smallHash($text)
281{
282 $t = rtrim(base64_encode(hash('crc32',$text,true)),'=');
c002ca9c 283 return strtr($t, '+/', '-_');
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284}
285
ad6c27b7 286// In a string, converts URLs to clickable links.
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287// Function inspired from http://www.php.net/manual/en/function.preg-replace.php#85722
288function text2clickable($url)
289{
290 $redir = empty($GLOBALS['redirector']) ? '' : $GLOBALS['redirector'];
30b0672d 291 return preg_replace('!(((?:https?|ftp|file)://|apt:|magnet:)\S+[[:alnum:]]/?)!si','<a href="'.$redir.'$1" rel="nofollow">$1</a>',$url);
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292}
293
294// This function inserts &nbsp; where relevant so that multiple spaces are properly displayed in HTML
295// even in the absence of <pre> (This is used in description to keep text formatting)
296function keepMultipleSpaces($text)
297{
298 return str_replace(' ',' &nbsp;',$text);
bb8f712d 299
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300}
301// ------------------------------------------------------------------------------------------
302// Sniff browser language to display dates in the right format automatically.
303// (Note that is may not work on your server if the corresponding local is not installed.)
304function autoLocale()
305{
8438a2e5 306 $attempts = array('en_US'); // Default if browser does not send HTTP_ACCEPT_LANGUAGE
ad6c27b7 307 if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) // e.g. "fr,fr-fr;q=0.8,en;q=0.5,en-us;q=0.3"
308 { // (It's a bit crude, but it works very well. Preferred language is always presented first.)
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309 if (preg_match('/([a-z]{2})-?([a-z]{2})?/i',$_SERVER['HTTP_ACCEPT_LANGUAGE'],$matches)) {
310 $loc = $matches[1] . (!empty($matches[2]) ? '_' . strtoupper($matches[2]) : '');
da49603b 311 $attempts = array($loc.'.UTF-8', $loc, str_replace('_', '-', $loc).'.UTF-8', str_replace('_', '-', $loc),
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312 $loc . '_' . strtoupper($loc).'.UTF-8', $loc . '_' . strtoupper($loc),
313 $loc . '_' . $loc.'.UTF-8', $loc . '_' . $loc, $loc . '-' . strtoupper($loc).'.UTF-8',
da49603b 314 $loc . '-' . strtoupper($loc), $loc . '-' . $loc.'.UTF-8', $loc . '-' . $loc);
8438a2e5 315 }
45034273 316 }
8438a2e5 317 setlocale(LC_TIME, $attempts); // LC_TIME = Set local for date/time format only.
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318}
319
320// ------------------------------------------------------------------------------------------
321// PubSubHubbub protocol support (if enabled) [UNTESTED]
322// (Source: http://aldarone.fr/les-flux-rss-shaarli-et-pubsubhubbub/ )
323if (!empty($GLOBALS['config']['PUBSUBHUB_URL'])) include './publisher.php';
324function pubsubhub()
325{
326 if (!empty($GLOBALS['config']['PUBSUBHUB_URL']))
327 {
328 $p = new Publisher($GLOBALS['config']['PUBSUBHUB_URL']);
329 $topic_url = array (
330 indexUrl().'?do=atom',
331 indexUrl().'?do=rss'
332 );
333 $p->publish_update($topic_url);
334 }
335}
336
337// ------------------------------------------------------------------------------------------
338// Session management
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339
340// Returns the IP address of the client (Used to prevent session cookie hijacking.)
341function allIPs()
342{
343 $ip = $_SERVER["REMOTE_ADDR"];
344 // Then we use more HTTP headers to prevent session hijacking from users behind the same proxy.
345 if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) { $ip=$ip.'_'.$_SERVER['HTTP_X_FORWARDED_FOR']; }
346 if (isset($_SERVER['HTTP_CLIENT_IP'])) { $ip=$ip.'_'.$_SERVER['HTTP_CLIENT_IP']; }
347 return $ip;
348}
349
ae00595b 350function fillSessionInfo() {
ad6c27b7 351 $_SESSION['uid'] = sha1(uniqid('',true).'_'.mt_rand()); // Generate unique random number (different than phpsessionid)
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352 $_SESSION['ip']=allIPs(); // We store IP address(es) of the client to make sure session is not hijacked.
353 $_SESSION['username']=$GLOBALS['login'];
354 $_SESSION['expires_on']=time()+INACTIVITY_TIMEOUT; // Set session expiration.
355}
356
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357// Check that user/password is correct.
358function check_auth($login,$password)
359{
360 $hash = sha1($password.$login.$GLOBALS['salt']);
361 if ($login==$GLOBALS['login'] && $hash==$GLOBALS['hash'])
362 { // Login/password is correct.
ae00595b 363 fillSessionInfo();
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364 logm('Login successful');
365 return True;
366 }
367 logm('Login failed for user '.$login);
368 return False;
369}
370
371// Returns true if the user is logged in.
372function isLoggedIn()
373{
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374 global $userIsLoggedIn;
375 return $userIsLoggedIn;
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376}
377
378// Force logout.
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379function logout() {
380 if (isset($_SESSION)) {
381 unset($_SESSION['uid']);
382 unset($_SESSION['ip']);
383 unset($_SESSION['username']);
384 unset($_SESSION['privateonly']);
385 }
386 setcookie('shaarli_staySignedIn', FALSE, 0, WEB_PATH);
ae00595b 387}
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388
389
390// ------------------------------------------------------------------------------------------
391// Brute force protection system
392// Several consecutive failed logins will ban the IP address for 30 minutes.
393if (!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?>");
394include $GLOBALS['config']['IPBANS_FILENAME'];
395// Signal a failed login. Will ban the IP if too many failures:
396function ban_loginFailed()
397{
398 $ip=$_SERVER["REMOTE_ADDR"]; $gb=$GLOBALS['IPBANS'];
399 if (!isset($gb['FAILURES'][$ip])) $gb['FAILURES'][$ip]=0;
400 $gb['FAILURES'][$ip]++;
401 if ($gb['FAILURES'][$ip]>($GLOBALS['config']['BAN_AFTER']-1))
402 {
403 $gb['BANS'][$ip]=time()+$GLOBALS['config']['BAN_DURATION'];
404 logm('IP address banned from login');
405 }
406 $GLOBALS['IPBANS'] = $gb;
407 file_put_contents($GLOBALS['config']['IPBANS_FILENAME'], "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>");
408}
409
410// Signals a successful login. Resets failed login counter.
411function ban_loginOk()
412{
413 $ip=$_SERVER["REMOTE_ADDR"]; $gb=$GLOBALS['IPBANS'];
414 unset($gb['FAILURES'][$ip]); unset($gb['BANS'][$ip]);
415 $GLOBALS['IPBANS'] = $gb;
416 file_put_contents($GLOBALS['config']['IPBANS_FILENAME'], "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>");
417}
418
419// Checks if the user CAN login. If 'true', the user can try to login.
420function ban_canLogin()
421{
422 $ip=$_SERVER["REMOTE_ADDR"]; $gb=$GLOBALS['IPBANS'];
423 if (isset($gb['BANS'][$ip]))
424 {
425 // User is banned. Check if the ban has expired:
426 if ($gb['BANS'][$ip]<=time())
427 { // Ban expired, user can try to login again.
428 logm('Ban lifted.');
429 unset($gb['FAILURES'][$ip]); unset($gb['BANS'][$ip]);
430 file_put_contents($GLOBALS['config']['IPBANS_FILENAME'], "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>");
431 return true; // Ban has expired, user can login.
432 }
433 return false; // User is banned.
434 }
435 return true; // User is not banned.
436}
437
438// ------------------------------------------------------------------------------------------
439// Process login form: Check if login/password is correct.
440if (isset($_POST['login']))
441{
442 if (!ban_canLogin()) die('I said: NO. You are banned for the moment. Go away.');
443 if (isset($_POST['password']) && tokenOk($_POST['token']) && (check_auth($_POST['login'], $_POST['password'])))
ad6c27b7 444 { // Login/password is OK.
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445 ban_loginOk();
446 // If user wants to keep the session cookie even after the browser closes:
447 if (!empty($_POST['longlastingsession']))
448 {
ae00595b 449 setcookie('shaarli_staySignedIn', STAY_SIGNED_IN_TOKEN, time()+31536000, WEB_PATH);
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450 $_SESSION['longlastingsession']=31536000; // (31536000 seconds = 1 year)
451 $_SESSION['expires_on']=time()+$_SESSION['longlastingsession']; // Set session expiration on server-side.
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452
453 $cookiedir = ''; if(dirname($_SERVER['SCRIPT_NAME'])!='/') $cookiedir=dirname($_SERVER["SCRIPT_NAME"]).'/';
2f32d074 454 session_set_cookie_params($_SESSION['longlastingsession'],$cookiedir,$_SERVER['SERVER_NAME']); // Set session cookie expiration on client side
ad6c27b7 455 // Note: Never forget the trailing slash on the cookie path!
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456 session_regenerate_id(true); // Send cookie with new expiration date to browser.
457 }
458 else // Standard session expiration (=when browser closes)
459 {
2d9fab88 460 $cookiedir = ''; if(dirname($_SERVER['SCRIPT_NAME'])!='/') $cookiedir=dirname($_SERVER["SCRIPT_NAME"]).'/';
2f32d074 461 session_set_cookie_params(0,$cookiedir,$_SERVER['SERVER_NAME']); // 0 means "When browser closes"
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462 session_regenerate_id(true);
463 }
464 // Optional redirect after login:
a1795ddc 465 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; }
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466 if (isset($_POST['returnurl']))
467 {
468 if (endsWith($_POST['returnurl'],'?do=login')) { header('Location: ?'); exit; } // Prevent loops over login screen.
469 header('Location: '.$_POST['returnurl']); exit;
470 }
471 header('Location: ?'); exit;
472 }
473 else
474 {
475 ban_loginFailed();
705f8355 476 $redir = '';
a1795ddc 477 if (isset($_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']):''); }
fe16b01e 478 echo '<script>alert("Wrong login/password.");document.location=\'?do=login'.$redir.'\';</script>'; // Redirect to login screen.
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479 exit;
480 }
481}
482
483// ------------------------------------------------------------------------------------------
484// Misc utility functions:
485
486// Returns the server URL (including port and http/https), without path.
ad6c27b7 487// e.g. "http://myserver.com:8080"
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488// You can append $_SERVER['SCRIPT_NAME'] to get the current script URL.
489function serverUrl()
490{
491 $https = (!empty($_SERVER['HTTPS']) && (strtolower($_SERVER['HTTPS'])=='on')) || $_SERVER["SERVER_PORT"]=='443'; // HTTPS detection.
492 $serverport = ($_SERVER["SERVER_PORT"]=='80' || ($https && $_SERVER["SERVER_PORT"]=='443') ? '' : ':'.$_SERVER["SERVER_PORT"]);
2f32d074 493 return 'http'.($https?'s':'').'://'.$_SERVER['SERVER_NAME'].$serverport;
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494}
495
496// Returns the absolute URL of current script, without the query.
ad6c27b7 497// (e.g. http://sebsauvage.net/links/)
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498function indexUrl()
499{
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500 $scriptname = $_SERVER["SCRIPT_NAME"];
501 // If the script is named 'index.php', we remove it (for better looking URLs,
ad6c27b7 502 // e.g. http://mysite.com/shaarli/?abcde instead of http://mysite.com/shaarli/index.php?abcde)
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503 if (endswith($scriptname,'index.php')) $scriptname = substr($scriptname,0,strlen($scriptname)-9);
504 return serverUrl() . $scriptname;
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505}
506
507// Returns the absolute URL of current script, WITH the query.
ad6c27b7 508// (e.g. http://sebsauvage.net/links/?toto=titi&spamspamspam=humbug)
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509function pageUrl()
510{
511 return indexUrl().(!empty($_SERVER["QUERY_STRING"]) ? '?'.$_SERVER["QUERY_STRING"] : '');
512}
513
ad6c27b7 514// Convert post_max_size/upload_max_filesize (e.g. '16M') parameters to bytes.
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515function return_bytes($val)
516{
517 $val = trim($val); $last=strtolower($val[strlen($val)-1]);
518 switch($last)
519 {
520 case 'g': $val *= 1024;
521 case 'm': $val *= 1024;
522 case 'k': $val *= 1024;
523 }
524 return $val;
525}
526
527// Try to determine max file size for uploads (POST).
528// Returns an integer (in bytes)
529function getMaxFileSize()
530{
531 $size1 = return_bytes(ini_get('post_max_size'));
532 $size2 = return_bytes(ini_get('upload_max_filesize'));
533 // Return the smaller of two:
534 $maxsize = min($size1,$size2);
ad6c27b7 535 // FIXME: Then convert back to readable notations ? (e.g. 2M instead of 2000000)
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536 return $maxsize;
537}
538
539// Tells if a string start with a substring or not.
540function startsWith($haystack,$needle,$case=true)
541{
542 if($case){return (strcmp(substr($haystack, 0, strlen($needle)),$needle)===0);}
543 return (strcasecmp(substr($haystack, 0, strlen($needle)),$needle)===0);
544}
545
546// Tells if a string ends with a substring or not.
547function endsWith($haystack,$needle,$case=true)
548{
549 if($case){return (strcmp(substr($haystack, strlen($haystack) - strlen($needle)),$needle)===0);}
550 return (strcasecmp(substr($haystack, strlen($haystack) - strlen($needle)),$needle)===0);
551}
552
553/* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a timestamp (Unix epoch)
554 (used to build the ADD_DATE attribute in Netscape-bookmarks file)
555 PS: I could have used strptime(), but it does not exist on Windows. I'm too kind. */
556function linkdate2timestamp($linkdate)
557{
f5b05925
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558 if(strcmp($linkdate, '_000000') !== 0 || !$linkdate){
559 $Y=$M=$D=$h=$m=$s=0;
560 $r = sscanf($linkdate,'%4d%2d%2d_%2d%2d%2d',$Y,$M,$D,$h,$m,$s);
561 return mktime($h,$m,$s,$M,$D,$Y);
562 }
563 return time();
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564}
565
566/* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a RFC822 date.
567 (used to build the pubDate attribute in RSS feed.) */
568function linkdate2rfc822($linkdate)
569{
570 return date('r',linkdate2timestamp($linkdate)); // 'r' is for RFC822 date format.
571}
572
573/* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a ISO 8601 date.
574 (used to build the updated tags in ATOM feed.) */
575function linkdate2iso8601($linkdate)
576{
577 return date('c',linkdate2timestamp($linkdate)); // 'c' is for ISO 8601 date format.
578}
579
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580// Parse HTTP response headers and return an associative array.
581function http_parse_headers_shaarli( $headers )
582{
583 $res=array();
584 foreach($headers as $header)
585 {
586 $i = strpos($header,': ');
587 if ($i!==false)
588 {
589 $key=substr($header,0,$i);
590 $value=substr($header,$i+2,strlen($header)-$i-2);
591 $res[$key]=$value;
592 }
593 }
594 return $res;
595}
596
597/* GET an URL.
ad6c27b7 598 Input: $url : URL to get (http://...)
45034273 599 $timeout : Network timeout (will wait this many seconds for an anwser before giving up).
ad6c27b7 600 Output: An array. [0] = HTTP status message (e.g. "HTTP/1.1 200 OK") or error message
601 [1] = associative array containing HTTP response headers (e.g. echo getHTTP($url)[1]['Content-Type'])
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602 [2] = data
603 Example: list($httpstatus,$headers,$data) = getHTTP('http://sebauvage.net/');
604 if (strpos($httpstatus,'200 OK')!==false)
605 echo 'Data type: '.htmlspecialchars($headers['Content-Type']);
606 else
607 echo 'There was an error: '.htmlspecialchars($httpstatus)
608*/
609function getHTTP($url,$timeout=30)
610{
611 try
612 {
03545ef6 613 $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
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614 $context = stream_context_create($options);
615 $data=file_get_contents($url,false,$context,-1, 4000000); // We download at most 4 Mb from source.
616 if (!$data) { return array('HTTP Error',array(),''); }
ad6c27b7 617 $httpStatus=$http_response_header[0]; // e.g. "HTTP/1.1 200 OK"
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618 $responseHeaders=http_parse_headers_shaarli($http_response_header);
619 return array($httpStatus,$responseHeaders,$data);
620 }
ad6c27b7 621 catch (Exception $e) // getHTTP *can* fail silently (we don't care if the title cannot be fetched)
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622 {
623 return array($e->getMessage(),'','');
624 }
625}
626
627// Extract title from an HTML document.
628// (Returns an empty string if not found.)
629function html_extract_title($html)
630{
631 return preg_match('!<title>(.*?)</title>!is', $html, $matches) ? trim(str_replace("\n",' ', $matches[1])) : '' ;
632}
633
634// ------------------------------------------------------------------------------------------
635// Token management for XSRF protection
636// Token should be used in any form which acts on data (create,update,delete,import...).
637if (!isset($_SESSION['tokens'])) $_SESSION['tokens']=array(); // Token are attached to the session.
638
639// Returns a token.
640function getToken()
641{
a1f5a6ec 642 $rnd = sha1(uniqid('',true).'_'.mt_rand().$GLOBALS['salt']); // We generate a random string.
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643 $_SESSION['tokens'][$rnd]=1; // Store it on the server side.
644 return $rnd;
645}
646
ad6c27b7 647// Tells if a token is OK. Using this function will destroy the token.
648// true=token is OK.
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649function tokenOk($token)
650{
651 if (isset($_SESSION['tokens'][$token]))
652 {
653 unset($_SESSION['tokens'][$token]); // Token is used: destroy it.
ad6c27b7 654 return true; // Token is OK.
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655 }
656 return false; // Wrong token, or already used.
657}
658
659// ------------------------------------------------------------------------------------------
660/* This class is in charge of building the final page.
661 (This is basically a wrapper around RainTPL which pre-fills some fields.)
662 p = new pageBuilder;
663 p.assign('myfield','myvalue');
664 p.renderPage('mytemplate');
bb8f712d 665
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666*/
667class pageBuilder
668{
669 private $tpl; // RainTPL template
670
671 function __construct()
672 {
673 $this->tpl=false;
bb8f712d 674 }
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675
676 private function initialize()
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677 {
678 $this->tpl = new RainTPL;
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679 $this->tpl->assign('newversion',checkUpdate());
680 $this->tpl->assign('feedurl',htmlspecialchars(indexUrl()));
681 $searchcrits=''; // Search criteria
682 if (!empty($_GET['searchtags'])) $searchcrits.='&searchtags='.urlencode($_GET['searchtags']);
683 elseif (!empty($_GET['searchterm'])) $searchcrits.='&searchterm='.urlencode($_GET['searchterm']);
684 $this->tpl->assign('searchcrits',$searchcrits);
685 $this->tpl->assign('source',indexUrl());
686 $this->tpl->assign('version',shaarli_version);
687 $this->tpl->assign('scripturl',indexUrl());
688 $this->tpl->assign('pagetitle','Shaarli');
ad6c27b7 689 $this->tpl->assign('privateonly',!empty($_SESSION['privateonly'])); // Show only private links?
45034273 690 if (!empty($GLOBALS['title'])) $this->tpl->assign('pagetitle',$GLOBALS['title']);
ebb2880d 691 if (!empty($GLOBALS['titleLink'])) $this->tpl->assign('titleLink',$GLOBALS['titleLink']);
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692 if (!empty($GLOBALS['pagetitle'])) $this->tpl->assign('pagetitle',$GLOBALS['pagetitle']);
693 $this->tpl->assign('shaarlititle',empty($GLOBALS['title']) ? 'Shaarli': $GLOBALS['title'] );
bb8f712d 694 return;
45034273 695 }
bb8f712d 696
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697 // The following assign() method is basically the same as RainTPL (except that it's lazy)
698 public function assign($what,$where)
699 {
700 if ($this->tpl===false) $this->initialize(); // Lazy initialization
701 $this->tpl->assign($what,$where);
702 }
bb8f712d 703
45034273 704 // Render a specific page (using a template).
ad6c27b7 705 // e.g. pb.renderPage('picwall')
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706 public function renderPage($page)
707 {
708 if ($this->tpl===false) $this->initialize(); // Lazy initialization
709 $this->tpl->draw($page);
710 }
711}
712
713// ------------------------------------------------------------------------------------------
714/* Data storage for links.
715 This object behaves like an associative array.
716 Example:
717 $mylinks = new linkdb();
718 echo $mylinks['20110826_161819']['title'];
719 foreach($mylinks as $link)
720 echo $link['title'].' at url '.$link['url'].' ; description:'.$link['description'];
bb8f712d 721
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722 Available keys:
723 title : Title of the link
ad6c27b7 724 url : URL of the link. Can be absolute or relative. Relative URLs are permalinks (e.g.'?m-ukcw')
45034273 725 description : description of the entry
ad6c27b7 726 private : Is this link private? 0=no, other value=yes
727 linkdate : date of the creation of this entry, in the form YYYYMMDD_HHMMSS (e.g.'20110914_192317')
bb8f712d 728 tags : tags attached to this entry (separated by spaces)
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729
730 We implement 3 interfaces:
731 - ArrayAccess so that this object behaves like an associative array.
732 - Iterator so that this object can be used in foreach() loops.
733 - Countable interface so that we can do a count() on this object.
734*/
735class linkdb implements Iterator, Countable, ArrayAccess
736{
ad6c27b7 737 private $links; // List of links (associative array. Key=linkdate (e.g. "20110823_124546"), value= associative array (keys:title,description...)
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738 private $urls; // List of all recorded URLs (key=url, value=linkdate) for fast reserve search (url-->linkdate)
739 private $keys; // List of linkdate keys (for the Iterator interface implementation)
740 private $position; // Position in the $this->keys array. (for the Iterator interface implementation.)
ad6c27b7 741 private $loggedin; // Is the user logged in? (used to filter private links)
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742
743 // Constructor:
744 function __construct($isLoggedIn)
ad6c27b7 745 // Input : $isLoggedIn : is the user logged in?
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746 {
747 $this->loggedin = $isLoggedIn;
748 $this->checkdb(); // Make sure data file exists.
749 $this->readdb(); // Then read it.
750 }
751
752 // ---- Countable interface implementation
753 public function count() { return count($this->links); }
754
755 // ---- ArrayAccess interface implementation
756 public function offsetSet($offset, $value)
757 {
758 if (!$this->loggedin) die('You are not authorized to add a link.');
ad6c27b7 759 if (empty($value['linkdate']) || empty($value['url'])) die('Internal Error: A link should always have a linkdate and URL.');
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760 if (empty($offset)) die('You must specify a key.');
761 $this->links[$offset] = $value;
762 $this->urls[$value['url']]=$offset;
763 }
764 public function offsetExists($offset) { return array_key_exists($offset,$this->links); }
765 public function offsetUnset($offset)
766 {
767 if (!$this->loggedin) die('You are not authorized to delete a link.');
768 $url = $this->links[$offset]['url']; unset($this->urls[$url]);
769 unset($this->links[$offset]);
770 }
771 public function offsetGet($offset) { return isset($this->links[$offset]) ? $this->links[$offset] : null; }
772
773 // ---- Iterator interface implementation
774 function rewind() { $this->keys=array_keys($this->links); rsort($this->keys); $this->position=0; } // Start over for iteration, ordered by date (latest first).
775 function key() { return $this->keys[$this->position]; } // current key
776 function current() { return $this->links[$this->keys[$this->position]]; } // current value
777 function next() { ++$this->position; } // go to next item
778 function valid() { return isset($this->keys[$this->position]); } // Check if current position is valid.
779
780 // ---- Misc methods
781 private function checkdb() // Check if db directory and file exists.
782 {
783 if (!file_exists($GLOBALS['config']['DATASTORE'])) // Create a dummy database for example.
784 {
785 $this->links = array();
786 $link = array('title'=>'Shaarli - sebsauvage.net','url'=>'http://sebsauvage.net/wiki/doku.php?id=php:shaarli','description'=>'Welcome to Shaarli ! This is a bookmark. To edit or delete me, you must first login.','private'=>0,'linkdate'=>'20110914_190000','tags'=>'opensource software');
787 $this->links[$link['linkdate']] = $link;
58a8f4ca 788 $link = array('title'=>'My secret stuff... - Pastebin.com','url'=>'http://sebsauvage.net/paste/?8434b27936c09649#bR7XsXhoTiLcqCpQbmOpBi3rq2zzQUC5hBI7ZT1O3x8=','description'=>'SShhhh!! I\'m a private link only YOU can see. You can delete me too.','private'=>1,'linkdate'=>'20110914_074522','tags'=>'secretstuff');
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789 $this->links[$link['linkdate']] = $link;
790 file_put_contents($GLOBALS['config']['DATASTORE'], PHPPREFIX.base64_encode(gzdeflate(serialize($this->links))).PHPSUFFIX); // Write database to disk
791 }
792 }
793
794 // Read database from disk to memory
795 private function readdb()
796 {
797 // Read data
798 $this->links=(file_exists($GLOBALS['config']['DATASTORE']) ? unserialize(gzinflate(base64_decode(substr(file_get_contents($GLOBALS['config']['DATASTORE']),strlen(PHPPREFIX),-strlen(PHPSUFFIX))))) : array() );
799 // Note that gzinflate is faster than gzuncompress. See: http://www.php.net/manual/en/function.gzdeflate.php#96439
800
801 // If user is not logged in, filter private links.
802 if (!$this->loggedin)
803 {
804 $toremove=array();
805 foreach($this->links as $link) { if ($link['private']!=0) $toremove[]=$link['linkdate']; }
806 foreach($toremove as $linkdate) { unset($this->links[$linkdate]); }
807 }
808
809 // Keep the list of the mapping URLs-->linkdate up-to-date.
810 $this->urls=array();
811 foreach($this->links as $link) { $this->urls[$link['url']]=$link['linkdate']; }
812 }
813
814 // Save database from memory to disk.
815 public function savedb()
816 {
817 if (!$this->loggedin) die('You are not authorized to change the database.');
818 file_put_contents($GLOBALS['config']['DATASTORE'], PHPPREFIX.base64_encode(gzdeflate(serialize($this->links))).PHPSUFFIX);
819 invalidateCaches();
820 }
821
ad6c27b7 822 // Returns the link for a given URL (if it exists). False if it does not exist.
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823 public function getLinkFromUrl($url)
824 {
825 if (isset($this->urls[$url])) return $this->links[$this->urls[$url]];
826 return false;
827 }
828
ad6c27b7 829 // Case insensitive search among links (in the URLs, title and description). Returns filtered list of links.
830 // e.g. print_r($mydb->filterFulltext('hollandais'));
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831 public function filterFulltext($searchterms)
832 {
833 // FIXME: explode(' ',$searchterms) and perform a AND search.
ad6c27b7 834 // FIXME: accept double-quotes to search for a string "as is"?
2e45fdd8
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835 // Using mb_convert_case($val, MB_CASE_LOWER, 'UTF-8') allows us to perform searches on
836 // Unicode text. See https://github.com/shaarli/Shaarli/issues/75 for examples.
45034273 837 $filtered=array();
2e45fdd8 838 $s = mb_convert_case($searchterms, MB_CASE_LOWER, 'UTF-8');
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839 foreach($this->links as $l)
840 {
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841 $found= (strpos(mb_convert_case($l['title'], MB_CASE_LOWER, 'UTF-8'),$s) !== false)
842 || (strpos(mb_convert_case($l['description'], MB_CASE_LOWER, 'UTF-8'),$s) !== false)
843 || (strpos(mb_convert_case($l['url'], MB_CASE_LOWER, 'UTF-8'),$s) !== false)
844 || (strpos(mb_convert_case($l['tags'], MB_CASE_LOWER, 'UTF-8'),$s) !== false);
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845 if ($found) $filtered[$l['linkdate']] = $l;
846 }
847 krsort($filtered);
848 return $filtered;
849 }
850
851 // Filter by tag.
852 // You can specify one or more tags (tags can be separated by space or comma).
ad6c27b7 853 // e.g. print_r($mydb->filterTags('linux programming'));
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854 public function filterTags($tags,$casesensitive=false)
855 {
2e45fdd8
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856 // Same as above, we use UTF-8 conversion to handle various graphemes (i.e. cyrillic, or greek)
857 // TODO: is $casesensitive ever true ?
858 $t = str_replace(',',' ',($casesensitive?$tags:mb_convert_case($tags, MB_CASE_LOWER, 'UTF-8')));
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859 $searchtags=explode(' ',$t);
860 $filtered=array();
861 foreach($this->links as $l)
862 {
2e45fdd8 863 $linktags = explode(' ',($casesensitive?$l['tags']:mb_convert_case($l['tags'], MB_CASE_LOWER, 'UTF-8')));
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864 if (count(array_intersect($linktags,$searchtags)) == count($searchtags))
865 $filtered[$l['linkdate']] = $l;
866 }
867 krsort($filtered);
868 return $filtered;
869 }
870
ad6c27b7 871 // Filter by day. Day must be in the form 'YYYYMMDD' (e.g. '20120125')
45034273 872 // Sort order is: older articles first.
ad6c27b7 873 // e.g. print_r($mydb->filterDay('20120125'));
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874 public function filterDay($day)
875 {
876 $filtered=array();
877 foreach($this->links as $l)
878 {
879 if (startsWith($l['linkdate'],$day)) $filtered[$l['linkdate']] = $l;
880 }
881 ksort($filtered);
882 return $filtered;
883 }
884 // Filter by smallHash.
885 // Only 1 article is returned.
886 public function filterSmallHash($smallHash)
887 {
888 $filtered=array();
889 foreach($this->links as $l)
890 {
891 if ($smallHash==smallHash($l['linkdate'])) // Yes, this is ugly and slow
892 {
893 $filtered[$l['linkdate']] = $l;
894 return $filtered;
895 }
896 }
897 return $filtered;
898 }
899
900 // Returns the list of all tags
901 // Output: associative array key=tags, value=0
902 public function allTags()
903 {
904 $tags=array();
905 foreach($this->links as $link)
906 foreach(explode(' ',$link['tags']) as $tag)
907 if (!empty($tag)) $tags[$tag]=(empty($tags[$tag]) ? 1 : $tags[$tag]+1);
908 arsort($tags); // Sort tags by usage (most used tag first)
909 return $tags;
910 }
bb8f712d 911
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912 // Returns the list of days containing articles (oldest first)
913 // Output: An array containing days (in format YYYYMMDD).
914 public function days()
915 {
916 $linkdays=array();
917 foreach(array_keys($this->links) as $day)
918 {
919 $linkdays[substr($day,0,8)]=0;
920 }
921 $linkdays=array_keys($linkdays);
922 sort($linkdays);
923 return $linkdays;
924 }
925}
926
927// ------------------------------------------------------------------------------------------
ad6c27b7 928// Output the last N links in RSS 2.0 format.
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929function showRSS()
930{
931 header('Content-Type: application/rss+xml; charset=utf-8');
932
2abd3905 933 // $usepermalink : If true, use permalink instead of final link.
ad6c27b7 934 // User just has to add 'permalink' in URL parameters. e.g. http://mysite.com/shaarli/?do=rss&permalinks
ed5b38dd
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935 // Also enabled through a config option
936 $usepermalinks = isset($_GET['permalinks']) || !$GLOBALS['config']['ENABLE_RSS_PERMALINKS'];
2abd3905 937
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938 // Cache system
939 $query = $_SERVER["QUERY_STRING"];
940 $cache = new pageCache(pageUrl(),startsWith($query,'do=rss') && !isLoggedIn());
941 $cached = $cache->cachedVersion(); if (!empty($cached)) { echo $cached; exit; }
942
943 // If cached was not found (or not usable), then read the database and build the response:
ad6c27b7 944 $LINKSDB=new linkdb(isLoggedIn() || $GLOBALS['config']['OPEN_SHAARLI']); // Read links from database (and filter private links if user it not logged in).
45034273 945
ad6c27b7 946 // Optionally filter the results:
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947 $linksToDisplay=array();
948 if (!empty($_GET['searchterm'])) $linksToDisplay = $LINKSDB->filterFulltext($_GET['searchterm']);
59c90f58 949 else if (!empty($_GET['searchtags'])) $linksToDisplay = $LINKSDB->filterTags(trim($_GET['searchtags']));
45034273 950 else $linksToDisplay = $LINKSDB;
59c90f58 951
952 if ($GLOBALS['config']['HIDE_PUBLIC_LINKS'] && !isLoggedIn())
953 $linksToDisplay = array();
954
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955 $nblinksToDisplay = 50; // Number of links to display.
956 if (!empty($_GET['nb'])) // In URL, you can specificy the number of links. Example: nb=200 or nb=all for all links.
732e683b 957 {
c677013b
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958 $nblinksToDisplay = $_GET['nb']=='all' ? count($linksToDisplay) : max($_GET['nb']+0,1) ;
959 }
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960
961 $pageaddr=htmlspecialchars(indexUrl());
962 echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">';
963 echo '<channel><title>'.htmlspecialchars($GLOBALS['title']).'</title><link>'.$pageaddr.'</link>';
964 echo '<description>Shared links</description><language>en-en</language><copyright>'.$pageaddr.'</copyright>'."\n\n";
965 if (!empty($GLOBALS['config']['PUBSUBHUB_URL']))
966 {
967 echo '<!-- PubSubHubbub Discovery -->';
968 echo '<link rel="hub" href="'.htmlspecialchars($GLOBALS['config']['PUBSUBHUB_URL']).'" xmlns="http://www.w3.org/2005/Atom" />';
969 echo '<link rel="self" href="'.htmlspecialchars($pageaddr).'?do=rss" xmlns="http://www.w3.org/2005/Atom" />';
970 echo '<!-- End Of PubSubHubbub Discovery -->';
971 }
972 $i=0;
973 $keys=array(); foreach($linksToDisplay as $key=>$value) { $keys[]=$key; } // No, I can't use array_keys().
fbd9e527 974 while ($i<$nblinksToDisplay && $i<count($keys))
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975 {
976 $link = $linksToDisplay[$keys[$i]];
977 $guid = $pageaddr.'?'.smallHash($link['linkdate']);
978 $rfc822date = linkdate2rfc822($link['linkdate']);
979 $absurl = htmlspecialchars($link['url']);
980 if (startsWith($absurl,'?')) $absurl=$pageaddr.$absurl; // make permalink URL absolute
2abd3905 981 if ($usepermalinks===true)
ed5b38dd 982 echo '<item><title>'.htmlspecialchars($link['title']).'</title><guid isPermaLink="true">'.$guid.'</guid><link>'.$guid.'</link>';
2abd3905 983 else
3e0ef647 984 echo '<item><title>'.htmlspecialchars($link['title']).'</title><guid isPermaLink="false">'.$guid.'</guid><link>'.$absurl.'</link>';
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985 if (!$GLOBALS['config']['HIDE_TIMESTAMPS'] || isLoggedIn()) echo '<pubDate>'.htmlspecialchars($rfc822date)."</pubDate>\n";
986 if ($link['tags']!='') // Adding tags to each RSS entry (as mentioned in RSS specification)
987 {
988 foreach(explode(' ',$link['tags']) as $tag) { echo '<category domain="'.htmlspecialchars($pageaddr).'">'.htmlspecialchars($tag).'</category>'."\n"; }
989 }
2abd3905
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990
991 // Add permalink in description
992 $descriptionlink = '(<a href="'.$guid.'">Permalink</a>)';
993 // If user wants permalinks first, put the final link in description
994 if ($usepermalinks===true) $descriptionlink = '(<a href="'.$absurl.'">Link</a>)';
995 if (strlen($link['description'])>0) $descriptionlink = '<br>'.$descriptionlink;
996 echo '<description><![CDATA['.nl2br(keepMultipleSpaces(text2clickable(htmlspecialchars($link['description'])))).$descriptionlink.']]></description>'."\n</item>\n";
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997 $i++;
998 }
53da2017 999 echo '</channel></rss><!-- Cached version of '.htmlspecialchars(pageUrl()).' -->';
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1000
1001 $cache->cache(ob_get_contents());
1002 ob_end_flush();
1003 exit;
1004}
1005
1006// ------------------------------------------------------------------------------------------
ad6c27b7 1007// Output the last N links in ATOM format.
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1008function showATOM()
1009{
1010 header('Content-Type: application/atom+xml; charset=utf-8');
1011
2abd3905 1012 // $usepermalink : If true, use permalink instead of final link.
ad6c27b7 1013 // User just has to add 'permalink' in URL parameters. e.g. http://mysite.com/shaarli/?do=atom&permalinks
ed5b38dd 1014 $usepermalinks = isset($_GET['permalinks']) || !$GLOBALS['config']['ENABLE_RSS_PERMALINKS'];
2abd3905 1015
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1016 // Cache system
1017 $query = $_SERVER["QUERY_STRING"];
1018 $cache = new pageCache(pageUrl(),startsWith($query,'do=atom') && !isLoggedIn());
1019 $cached = $cache->cachedVersion(); if (!empty($cached)) { echo $cached; exit; }
1020 // If cached was not found (or not usable), then read the database and build the response:
1021
1022 $LINKSDB=new linkdb(isLoggedIn() || $GLOBALS['config']['OPEN_SHAARLI']); // Read links from database (and filter private links if used it not logged in).
1023
1024
ad6c27b7 1025 // Optionally filter the results:
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1026 $linksToDisplay=array();
1027 if (!empty($_GET['searchterm'])) $linksToDisplay = $LINKSDB->filterFulltext($_GET['searchterm']);
59c90f58 1028 else if (!empty($_GET['searchtags'])) $linksToDisplay = $LINKSDB->filterTags(trim($_GET['searchtags']));
45034273 1029 else $linksToDisplay = $LINKSDB;
59c90f58 1030
1031 if ($GLOBALS['config']['HIDE_PUBLIC_LINKS'] && !isLoggedIn())
1032 $linksToDisplay = array();
1033
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1034 $nblinksToDisplay = 50; // Number of links to display.
1035 if (!empty($_GET['nb'])) // In URL, you can specificy the number of links. Example: nb=200 or nb=all for all links.
732e683b 1036 {
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1037 $nblinksToDisplay = $_GET['nb']=='all' ? count($linksToDisplay) : max($_GET['nb']+0,1) ;
1038 }
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1039
1040 $pageaddr=htmlspecialchars(indexUrl());
1041 $latestDate = '';
1042 $entries='';
1043 $i=0;
1044 $keys=array(); foreach($linksToDisplay as $key=>$value) { $keys[]=$key; } // No, I can't use array_keys().
fbd9e527 1045 while ($i<$nblinksToDisplay && $i<count($keys))
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1046 {
1047 $link = $linksToDisplay[$keys[$i]];
1048 $guid = $pageaddr.'?'.smallHash($link['linkdate']);
1049 $iso8601date = linkdate2iso8601($link['linkdate']);
1050 $latestDate = max($latestDate,$iso8601date);
1051 $absurl = htmlspecialchars($link['url']);
1052 if (startsWith($absurl,'?')) $absurl=$pageaddr.$absurl; // make permalink URL absolute
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1053 $entries.='<entry><title>'.htmlspecialchars($link['title']).'</title>';
1054 if ($usepermalinks===true)
1055 $entries.='<link href="'.$guid.'" /><id>'.$guid.'</id>';
1056 else
1057 $entries.='<link href="'.$absurl.'" /><id>'.$guid.'</id>';
45034273 1058 if (!$GLOBALS['config']['HIDE_TIMESTAMPS'] || isLoggedIn()) $entries.='<updated>'.htmlspecialchars($iso8601date).'</updated>';
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1059
1060 // Add permalink in description
1061 $descriptionlink = htmlspecialchars('(<a href="'.$guid.'">Permalink</a>)');
1062 // If user wants permalinks first, put the final link in description
1063 if ($usepermalinks===true) $descriptionlink = htmlspecialchars('(<a href="'.$absurl.'">Link</a>)');
1064 if (strlen($link['description'])>0) $descriptionlink = '&lt;br&gt;'.$descriptionlink;
1065
1066 $entries.='<content type="html">'.htmlspecialchars(nl2br(keepMultipleSpaces(text2clickable(htmlspecialchars($link['description']))))).$descriptionlink."</content>\n";
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1067 if ($link['tags']!='') // Adding tags to each ATOM entry (as mentioned in ATOM specification)
1068 {
1069 foreach(explode(' ',$link['tags']) as $tag)
1070 { $entries.='<category scheme="'.htmlspecialchars($pageaddr,ENT_QUOTES).'" term="'.htmlspecialchars($tag,ENT_QUOTES).'" />'."\n"; }
1071 }
1072 $entries.="</entry>\n";
1073 $i++;
1074 }
1075 $feed='<?xml version="1.0" encoding="UTF-8"?><feed xmlns="http://www.w3.org/2005/Atom">';
1076 $feed.='<title>'.htmlspecialchars($GLOBALS['title']).'</title>';
1077 if (!$GLOBALS['config']['HIDE_TIMESTAMPS'] || isLoggedIn()) $feed.='<updated>'.htmlspecialchars($latestDate).'</updated>';
1078 $feed.='<link rel="self" href="'.htmlspecialchars(serverUrl().$_SERVER["REQUEST_URI"]).'" />';
1079 if (!empty($GLOBALS['config']['PUBSUBHUB_URL']))
1080 {
1081 $feed.='<!-- PubSubHubbub Discovery -->';
1082 $feed.='<link rel="hub" href="'.htmlspecialchars($GLOBALS['config']['PUBSUBHUB_URL']).'" />';
1083 $feed.='<!-- End Of PubSubHubbub Discovery -->';
1084 }
1085 $feed.='<author><name>'.htmlspecialchars($pageaddr).'</name><uri>'.htmlspecialchars($pageaddr).'</uri></author>';
1086 $feed.='<id>'.htmlspecialchars($pageaddr).'</id>'."\n\n"; // Yes, I know I should use a real IRI (RFC3987), but the site URL will do.
1087 $feed.=$entries;
53da2017 1088 $feed.='</feed><!-- Cached version of '.htmlspecialchars(pageUrl()).' -->';
45034273 1089 echo $feed;
bb8f712d 1090
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1091 $cache->cache(ob_get_contents());
1092 ob_end_flush();
1093 exit;
1094}
1095
1096// ------------------------------------------------------------------------------------------
1097// Daily RSS feed: 1 RSS entry per day giving all the links on that day.
1098// Gives the last 7 days (which have links).
1099// This RSS feed cannot be filtered.
1100function showDailyRSS()
1101{
1102 // Cache system
1103 $query = $_SERVER["QUERY_STRING"];
1104 $cache = new pageCache(pageUrl(),startsWith($query,'do=dailyrss') && !isLoggedIn());
1105 $cached = $cache->cachedVersion(); if (!empty($cached)) { echo $cached; exit; }
1106 // If cached was not found (or not usable), then read the database and build the response:
1107 $LINKSDB=new linkdb(isLoggedIn() || $GLOBALS['config']['OPEN_SHAARLI']); // Read links from database (and filter private links if used it not logged in).
bb8f712d 1108
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1109 /* Some Shaarlies may have very few links, so we need to look
1110 back in time (rsort()) until we have enough days ($nb_of_days).
1111 */
bb8f712d 1112 $linkdates=array(); foreach($LINKSDB as $linkdate=>$value) { $linkdates[]=$linkdate; }
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1113 rsort($linkdates);
1114 $nb_of_days=7; // We take 7 days.
1115 $today=Date('Ymd');
1116 $days=array();
1117 foreach($linkdates as $linkdate)
1118 {
1119 $day=substr($linkdate,0,8); // Extract day (without time)
1120 if (strcmp($day,$today)<0)
1121 {
1122 if (empty($days[$day])) $days[$day]=array();
1123 $days[$day][]=$linkdate;
1124 }
ad6c27b7 1125 if (count($days)>$nb_of_days) break; // Have we collected enough days?
45034273 1126 }
bb8f712d 1127
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1128 // Build the RSS feed.
1129 header('Content-Type: application/rss+xml; charset=utf-8');
1130 $pageaddr=htmlspecialchars(indexUrl());
1131 echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0">';
1132 echo '<channel><title>Daily - '.htmlspecialchars($GLOBALS['title']).'</title><link>'.$pageaddr.'</link>';
1133 echo '<description>Daily shared links</description><language>en-en</language><copyright>'.$pageaddr.'</copyright>'."\n";
bb8f712d 1134
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1135 foreach($days as $day=>$linkdates) // For each day.
1136 {
1137 $daydate = utf8_encode(strftime('%A %d, %B %Y',linkdate2timestamp($day.'_000000'))); // Full text date
1138 $rfc822date = linkdate2rfc822($day.'_000000');
1139 $absurl=htmlspecialchars(indexUrl().'?do=daily&day='.$day); // Absolute URL of the corresponding "Daily" page.
1140 echo '<item><title>'.htmlspecialchars($GLOBALS['title'].' - '.$daydate).'</title><guid>'.$absurl.'</guid><link>'.$absurl.'</link>';
1141 echo '<pubDate>'.htmlspecialchars($rfc822date)."</pubDate>";
bb8f712d 1142
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1143 // Build the HTML body of this RSS entry.
1144 $html='';
1145 $href='';
1146 $links=array();
1147 // We pre-format some fields for proper output.
1148 foreach($linkdates as $linkdate)
1149 {
1150 $l = $LINKSDB[$linkdate];
1151 $l['formatedDescription']=nl2br(keepMultipleSpaces(text2clickable(htmlspecialchars($l['description']))));
bb8f712d 1152 $l['thumbnail'] = thumbnail($l['url']);
a5752e77 1153 $l['timestamp'] = linkdate2timestamp($l['linkdate']);
45034273 1154 if (startsWith($l['url'],'?')) $l['url']=indexUrl().$l['url']; // make permalink URL absolute
bb8f712d 1155 $links[$linkdate]=$l;
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1156 }
1157 // Then build the HTML for this day:
bb8f712d 1158 $tpl = new RainTPL;
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1159 $tpl->assign('links',$links);
1160 $html = $tpl->draw('dailyrss',$return_string=true);
1161 echo "\n";
1162 echo '<description><![CDATA['.$html.']]></description>'."\n</item>\n\n";
1163
bb8f712d 1164 }
53da2017 1165 echo '</channel></rss><!-- Cached version of '.htmlspecialchars(pageUrl()).' -->';
bb8f712d 1166
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1167 $cache->cache(ob_get_contents());
1168 ob_end_flush();
1169 exit;
1170}
1171
1172// "Daily" page.
1173function showDaily()
1174{
1175 $LINKSDB=new linkdb(isLoggedIn() || $GLOBALS['config']['OPEN_SHAARLI']); // Read links from database (and filter private links if used it not logged in).
1176
1177
1178 $day=Date('Ymd',strtotime('-1 day')); // Yesterday, in format YYYYMMDD.
1179 if (isset($_GET['day'])) $day=$_GET['day'];
bb8f712d 1180
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1181 $days = $LINKSDB->days();
1182 $i = array_search($day,$days);
1183 if ($i==false) { $i=count($days)-1; $day=$days[$i]; }
bb8f712d
KT
1184 $previousday='';
1185 $nextday='';
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1186 if ($i!==false)
1187 {
1188 if ($i>1) $previousday=$days[$i-1];
1189 if ($i<count($days)-1) $nextday=$days[$i+1];
1190 }
1191
1192 $linksToDisplay=$LINKSDB->filterDay($day);
59c90f58 1193 if ($GLOBALS['config']['HIDE_PUBLIC_LINKS'] && !isLoggedIn())
1194 $linksToDisplay = array();
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1195 // We pre-format some fields for proper output.
1196 foreach($linksToDisplay as $key=>$link)
1197 {
dd62b9ba
SS
1198 $taglist = explode(' ',$link['tags']);
1199 uasort($taglist, 'strcasecmp');
1200 $linksToDisplay[$key]['taglist']=$taglist;
45034273 1201 $linksToDisplay[$key]['formatedDescription']=nl2br(keepMultipleSpaces(text2clickable(htmlspecialchars($link['description']))));
bb8f712d 1202 $linksToDisplay[$key]['thumbnail'] = thumbnail($link['url']);
a5752e77 1203 $linksToDisplay[$key]['timestamp'] = linkdate2timestamp($link['linkdate']);
45034273 1204 }
bb8f712d 1205
45034273 1206 /* We need to spread the articles on 3 columns.
ad6c27b7 1207 I did not want to use a JavaScript lib like http://masonry.desandro.com/
bb8f712d 1208 so I manually spread entries with a simple method: I roughly evaluate the
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1209 height of a div according to title and description length.
1210 */
1211 $columns=array(array(),array(),array()); // Entries to display, for each column.
1212 $fill=array(0,0,0); // Rough estimate of columns fill.
1213 foreach($linksToDisplay as $key=>$link)
1214 {
1215 // Roughly estimate length of entry (by counting characters)
1216 // Title: 30 chars = 1 line. 1 line is 30 pixels height.
1217 // Description: 836 characters gives roughly 342 pixel height.
ad6c27b7 1218 // This is not perfect, but it's usually OK.
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1219 $length=strlen($link['title'])+(342*strlen($link['description']))/836;
1220 if ($link['thumbnail']) $length +=100; // 1 thumbnails roughly takes 100 pixels height.
1221 // Then put in column which is the less filled:
1222 $smallest=min($fill); // find smallest value in array.
1223 $index=array_search($smallest,$fill); // find index of this smallest value.
1224 array_push($columns[$index],$link); // Put entry in this column.
1225 $fill[$index]+=$length;
1226 }
1227 $PAGE = new pageBuilder;
1228 $PAGE->assign('linksToDisplay',$linksToDisplay);
1229 $PAGE->assign('linkcount',count($LINKSDB));
cae64e52 1230 $PAGE->assign('cols', $columns);
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1231 $PAGE->assign('day',utf8_encode(strftime('%A %d, %B %Y',linkdate2timestamp($day.'_000000'))));
1232 $PAGE->assign('previousday',$previousday);
bb8f712d 1233 $PAGE->assign('nextday',$nextday);
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1234 $PAGE->renderPage('daily');
1235 exit;
1236}
1237
1238
1239// ------------------------------------------------------------------------------------------
1240// Render HTML page (according to URL parameters and user rights)
1241function renderPage()
1242{
1243 $LINKSDB=new linkdb(isLoggedIn() || $GLOBALS['config']['OPEN_SHAARLI']); // Read links from database (and filter private links if used it not logged in).
1244
1245 // -------- Display login form.
1246 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=login'))
1247 {
1248 if ($GLOBALS['config']['OPEN_SHAARLI']) { header('Location: ?'); exit; } // No need to login for open Shaarli
1249 $token=''; if (ban_canLogin()) $token=getToken(); // Do not waste token generation if not useful.
1250 $PAGE = new pageBuilder;
1251 $PAGE->assign('token',$token);
1252 $PAGE->assign('returnurl',(isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER']:''));
1253 $PAGE->renderPage('loginform');
1254 exit;
1255 }
1256 // -------- User wants to logout.
1257 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=logout'))
1258 {
1259 invalidateCaches();
1260 logout();
1261 header('Location: ?');
1262 exit;
1263 }
1264
1265 // -------- Picture wall
1266 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=picwall'))
1267 {
ad6c27b7 1268 // Optionally filter the results:
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1269 $links=array();
1270 if (!empty($_GET['searchterm'])) $links = $LINKSDB->filterFulltext($_GET['searchterm']);
1271 elseif (!empty($_GET['searchtags'])) $links = $LINKSDB->filterTags(trim($_GET['searchtags']));
1272 else $links = $LINKSDB;
59c90f58 1273
1274 if ($GLOBALS['config']['HIDE_PUBLIC_LINKS'] && !isLoggedIn())
1275 $links = array();
1276
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1277 $body='';
1278 $linksToDisplay=array();
1279
1280 // Get only links which have a thumbnail.
1281 foreach($links as $link)
1282 {
1283 $permalink='?'.htmlspecialchars(smallhash($link['linkdate']),ENT_QUOTES);
1284 $thumb=lazyThumbnail($link['url'],$permalink);
1285 if ($thumb!='') // Only output links which have a thumbnail.
1286 {
1287 $link['thumbnail']=$thumb; // Thumbnail HTML code.
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1288 $linksToDisplay[]=$link; // Add to array.
1289 }
1290 }
59c90f58 1291
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1292 $PAGE = new pageBuilder;
1293 $PAGE->assign('linkcount',count($LINKSDB));
1294 $PAGE->assign('linksToDisplay',$linksToDisplay);
1295 $PAGE->renderPage('picwall');
1296 exit;
1297 }
1298
1299 // -------- Tag cloud
1300 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=tagcloud'))
1301 {
1302 $tags= $LINKSDB->allTags();
59c90f58 1303 if ($GLOBALS['config']['HIDE_PUBLIC_LINKS'] && !isLoggedIn())
1304 $tags = array();
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1305 // We sort tags alphabetically, then choose a font size according to count.
1306 // First, find max value.
1307 $maxcount=0; foreach($tags as $key=>$value) $maxcount=max($maxcount,$value);
1308 ksort($tags);
1309 $tagList=array();
1310 foreach($tags as $key=>$value)
1e3b2740 1311 // Tag font size scaling: default 15 and 30 logarithm bases affect scaling, 22 and 6 are arbitrary font sizes for max and min sizes.
45034273 1312 {
1e3b2740 1313 $tagList[$key] = array('count'=>$value,'size'=>log($value, 15) / log($maxcount, 30) * (22-6) + 6);
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1314 }
1315 $PAGE = new pageBuilder;
1316 $PAGE->assign('linkcount',count($LINKSDB));
1317 $PAGE->assign('tags',$tagList);
1318 $PAGE->renderPage('tagcloud');
bb8f712d 1319 exit;
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1320 }
1321
1322 // -------- User clicks on a tag in a link: The tag is added to the list of searched tags (searchtags=...)
1323 if (isset($_GET['addtag']))
1324 {
1325 // Get previous URL (http_referer) and add the tag to the searchtags parameters in query.
1326 if (empty($_SERVER['HTTP_REFERER'])) { header('Location: ?searchtags='.urlencode($_GET['addtag'])); exit; } // In case browser does not send HTTP_REFERER
1327 parse_str(parse_url($_SERVER['HTTP_REFERER'],PHP_URL_QUERY), $params);
732e683b
FE
1328
1329 // Check if this tag is already in the search query and ignore it if it is.
1330 // Each tag is always separated by a space
1331 $current_tags = explode(' ', $params['searchtags']);
1332 $addtag = true;
1333 foreach ($current_tags as $value) {
1334 if ($value === $_GET['addtag']) {
1335 $addtag = false;
1336 break;
1337 }
1338 }
1339 // Append the tag if necessary
1340 if (empty($params['searchtags'])) {
1341 $params['searchtags'] = trim($_GET['addtag']);
1342 }
1343 else if ($addtag) {
1344 $params['searchtags'] = trim($params['searchtags']).' '.trim($_GET['addtag']);
1345 }
1346
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1347 unset($params['page']); // We also remove page (keeping the same page has no sense, since the results are different)
1348 header('Location: ?'.http_build_query($params));
1349 exit;
1350 }
1351
1352 // -------- User clicks on a tag in result count: Remove the tag from the list of searched tags (searchtags=...)
1353 if (isset($_GET['removetag']))
1354 {
1355 // Get previous URL (http_referer) and remove the tag from the searchtags parameters in query.
1356 if (empty($_SERVER['HTTP_REFERER'])) { header('Location: ?'); exit; } // In case browser does not send HTTP_REFERER
1357 parse_str(parse_url($_SERVER['HTTP_REFERER'],PHP_URL_QUERY), $params);
1358 if (isset($params['searchtags']))
1359 {
1360 $tags = explode(' ',$params['searchtags']);
1361 $tags=array_diff($tags, array($_GET['removetag'])); // Remove value from array $tags.
1362 if (count($tags)==0) unset($params['searchtags']); else $params['searchtags'] = implode(' ',$tags);
1363 unset($params['page']); // We also remove page (keeping the same page has no sense, since the results are different)
1364 }
1365 header('Location: ?'.http_build_query($params));
1366 exit;
1367 }
1368
1369 // -------- User wants to change the number of links per page (linksperpage=...)
1370 if (isset($_GET['linksperpage']))
1371 {
1372 if (is_numeric($_GET['linksperpage'])) { $_SESSION['LINKS_PER_PAGE']=abs(intval($_GET['linksperpage'])); }
ad6c27b7 1373 // Make sure the referrer is Shaarli itself.
feebc6d4 1374 $referer = '?';
f6a6ca0a 1375 if (!empty($_SERVER['HTTP_REFERER']) && strcmp(parse_url($_SERVER['HTTP_REFERER'],PHP_URL_HOST),$_SERVER['HTTP_HOST'])==0)
feebc6d4
SS
1376 $referer = $_SERVER['HTTP_REFERER'];
1377 header('Location: '.$referer);
45034273
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1378 exit;
1379 }
bb8f712d 1380
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1381 // -------- User wants to see only private links (toggle)
1382 if (isset($_GET['privateonly']))
1383 {
1384 if (empty($_SESSION['privateonly']))
1385 {
1386 $_SESSION['privateonly']=1; // See only private links
1387 }
1388 else
1389 {
1390 unset($_SESSION['privateonly']); // See all links
1391 }
ad6c27b7 1392 // Make sure the referrer is Shaarli itself.
feebc6d4 1393 $referer = '?';
f6a6ca0a 1394 if (!empty($_SERVER['HTTP_REFERER']) && strcmp(parse_url($_SERVER['HTTP_REFERER'],PHP_URL_HOST),$_SERVER['HTTP_HOST'])==0)
feebc6d4
SS
1395 $referer = $_SERVER['HTTP_REFERER'];
1396 header('Location: '.$referer);
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SS
1397 exit;
1398 }
1399
1400 // -------- Handle other actions allowed for non-logged in users:
1401 if (!isLoggedIn())
1402 {
ad6c27b7 1403 // User tries to post new link but is not logged in:
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1404 // Show login screen, then redirect to ?post=...
1405 if (isset($_GET['post']))
1406 {
a1795ddc 1407 header('Location: ?do=login&post='.urlencode($_GET['post']).(!empty($_GET['title'])?'&title='.urlencode($_GET['title']):'').(!empty($_GET['description'])?'&description='.urlencode($_GET['description']):'').(!empty($_GET['source'])?'&source='.urlencode($_GET['source']):'')); // Redirect to login page, then back to post link.
45034273
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1408 exit;
1409 }
aedc912d
FE
1410
1411 // Same case as above except that user tried to access ?do=addlink without being logged in
1412 // Note: passing empty parameters makes Shaarli generate default URLs and descriptions.
1413 if (isset($_GET['do']) && $_GET['do'] === 'addlink') {
1414 header('Location: ?do=login&post=');
1415 exit;
1416 }
1417
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1418 $PAGE = new pageBuilder;
1419 buildLinkList($PAGE,$LINKSDB); // Compute list of links to display
1420 $PAGE->renderPage('linklist');
ad6c27b7 1421 exit; // Never remove this one! All operations below are reserved for logged in user.
45034273
SS
1422 }
1423
1424 // -------- All other functions are reserved for the registered user:
1425
1426 // -------- Display the Tools menu if requested (import/export/bookmarklet...)
1427 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=tools'))
1428 {
1429 $PAGE = new pageBuilder;
1430 $PAGE->assign('linkcount',count($LINKSDB));
1431 $PAGE->assign('pageabsaddr',indexUrl());
1432 $PAGE->renderPage('tools');
1433 exit;
1434 }
1435
1436 // -------- User wants to change his/her password.
1437 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=changepasswd'))
1438 {
1439 if ($GLOBALS['config']['OPEN_SHAARLI']) die('You are not supposed to change a password on an Open Shaarli.');
1440 if (!empty($_POST['setpassword']) && !empty($_POST['oldpassword']))
1441 {
ad6c27b7 1442 if (!tokenOk($_POST['token'])) die('Wrong token.'); // Go away!
45034273
SS
1443
1444 // Make sure old password is correct.
1445 $oldhash = sha1($_POST['oldpassword'].$GLOBALS['login'].$GLOBALS['salt']);
fe16b01e 1446 if ($oldhash!=$GLOBALS['hash']) { echo '<script>alert("The old password is not correct.");document.location=\'?do=changepasswd\';</script>'; exit; }
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1447 // Save new password
1448 $GLOBALS['salt'] = sha1(uniqid('',true).'_'.mt_rand()); // Salt renders rainbow-tables attacks useless.
1449 $GLOBALS['hash'] = sha1($_POST['setpassword'].$GLOBALS['login'].$GLOBALS['salt']);
1450 writeConfig();
fe16b01e 1451 echo '<script>alert("Your password has been changed.");document.location=\'?do=tools\';</script>';
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SS
1452 exit;
1453 }
1454 else // show the change password form.
1455 {
1456 $PAGE = new pageBuilder;
1457 $PAGE->assign('linkcount',count($LINKSDB));
1458 $PAGE->assign('token',getToken());
1459 $PAGE->renderPage('changepassword');
1460 exit;
1461 }
1462 }
1463
1464 // -------- User wants to change configuration
1465 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=configure'))
1466 {
1467 if (!empty($_POST['title']) )
1468 {
ad6c27b7 1469 if (!tokenOk($_POST['token'])) die('Wrong token.'); // Go away!
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SS
1470 $tz = 'UTC';
1471 if (!empty($_POST['continent']) && !empty($_POST['city']))
1472 if (isTZvalid($_POST['continent'],$_POST['city']))
1473 $tz = $_POST['continent'].'/'.$_POST['city'];
1474 $GLOBALS['timezone'] = $tz;
1475 $GLOBALS['title']=$_POST['title'];
ebb2880d 1476 $GLOBALS['titleLink']=$_POST['titleLink'];
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SS
1477 $GLOBALS['redirector']=$_POST['redirector'];
1478 $GLOBALS['disablesessionprotection']=!empty($_POST['disablesessionprotection']);
858c5c2b 1479 $GLOBALS['disablejquery']=!empty($_POST['disablejquery']);
bb8f712d 1480 $GLOBALS['privateLinkByDefault']=!empty($_POST['privateLinkByDefault']);
ed5b38dd 1481 $GLOBALS['config']['ENABLE_RSS_PERMALINKS']= !empty($_POST['enableRssPermalinks']);
329e0768 1482 $GLOBALS['config']['ENABLE_UPDATECHECK'] = !empty($_POST['updateCheck']);
caee7ff9 1483 $GLOBALS['config']['HIDE_PUBLIC_LINKS'] = !empty($_POST['hidePublicLinks']);
45034273 1484 writeConfig();
fe16b01e 1485 echo '<script>alert("Configuration was saved.");document.location=\'?do=tools\';</script>';
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SS
1486 exit;
1487 }
1488 else // Show the configuration form.
1489 {
1490 $PAGE = new pageBuilder;
1491 $PAGE->assign('linkcount',count($LINKSDB));
1492 $PAGE->assign('token',getToken());
1493 $PAGE->assign('title',htmlspecialchars( empty($GLOBALS['title']) ? '' : $GLOBALS['title'] , ENT_QUOTES));
1494 $PAGE->assign('redirector',htmlspecialchars( empty($GLOBALS['redirector']) ? '' : $GLOBALS['redirector'] , ENT_QUOTES));
1495 list($timezone_form,$timezone_js) = templateTZform($GLOBALS['timezone']);
ad6c27b7 1496 $PAGE->assign('timezone_form',$timezone_form); // FIXME: Put entire tz form generation in template?
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1497 $PAGE->assign('timezone_js',$timezone_js);
1498 $PAGE->renderPage('configure');
1499 exit;
1500 }
1501 }
1502
1503 // -------- User wants to rename a tag or delete it
1504 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=changetag'))
1505 {
1506 if (empty($_POST['fromtag']))
1507 {
1508 $PAGE = new pageBuilder;
1509 $PAGE->assign('linkcount',count($LINKSDB));
1510 $PAGE->assign('token',getToken());
bdd1715b 1511 $PAGE->assign('tags', $LINKSDB->allTags());
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1512 $PAGE->renderPage('changetag');
1513 exit;
1514 }
1515 if (!tokenOk($_POST['token'])) die('Wrong token.');
1516
1517 // Delete a tag:
1518 if (!empty($_POST['deletetag']) && !empty($_POST['fromtag']))
1519 {
1520 $needle=trim($_POST['fromtag']);
ad6c27b7 1521 $linksToAlter = $LINKSDB->filterTags($needle,true); // True for case-sensitive tag search.
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1522 foreach($linksToAlter as $key=>$value)
1523 {
1524 $tags = explode(' ',trim($value['tags']));
1525 unset($tags[array_search($needle,$tags)]); // Remove tag.
1526 $value['tags']=trim(implode(' ',$tags));
1527 $LINKSDB[$key]=$value;
1528 }
ad6c27b7 1529 $LINKSDB->savedb(); // Save to disk.
fe16b01e 1530 echo '<script>alert("Tag was removed from '.count($linksToAlter).' links.");document.location=\'?\';</script>';
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SS
1531 exit;
1532 }
1533
1534 // Rename a tag:
1535 if (!empty($_POST['renametag']) && !empty($_POST['fromtag']) && !empty($_POST['totag']))
1536 {
1537 $needle=trim($_POST['fromtag']);
1538 $linksToAlter = $LINKSDB->filterTags($needle,true); // true for case-sensitive tag search.
1539 foreach($linksToAlter as $key=>$value)
1540 {
1541 $tags = explode(' ',trim($value['tags']));
ad6c27b7 1542 $tags[array_search($needle,$tags)] = trim($_POST['totag']); // Replace tags value.
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SS
1543 $value['tags']=trim(implode(' ',$tags));
1544 $LINKSDB[$key]=$value;
1545 }
ad6c27b7 1546 $LINKSDB->savedb(); // Save to disk.
fe16b01e 1547 echo '<script>alert("Tag was renamed in '.count($linksToAlter).' links.");document.location=\'?searchtags='.urlencode($_POST['totag']).'\';</script>';
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SS
1548 exit;
1549 }
1550 }
1551
ad6c27b7 1552 // -------- User wants to add a link without using the bookmarklet: Show form.
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SS
1553 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=addlink'))
1554 {
1555 $PAGE = new pageBuilder;
1556 $PAGE->assign('linkcount',count($LINKSDB));
1557 $PAGE->renderPage('addlink');
1558 exit;
1559 }
1560
1561 // -------- User clicked the "Save" button when editing a link: Save link to database.
1562 if (isset($_POST['save_edit']))
1563 {
ad6c27b7 1564 if (!tokenOk($_POST['token'])) die('Wrong token.'); // Go away!
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SS
1565 $tags = trim(preg_replace('/\s\s+/',' ', $_POST['lf_tags'])); // Remove multiple spaces.
1566 $linkdate=$_POST['lf_linkdate'];
feebc6d4 1567 $url = trim($_POST['lf_url']);
f81139c9 1568 if (!startsWith($url,'http:') && !startsWith($url,'https:') && !startsWith($url,'ftp:') && !startsWith($url,'magnet:') && !startsWith($url,'?') && !startsWith($url,'javascript:'))
feebc6d4
SS
1569 $url = 'http://'.$url;
1570 $link = array('title'=>trim($_POST['lf_title']),'url'=>$url,'description'=>trim($_POST['lf_description']),'private'=>(isset($_POST['lf_private']) ? 1 : 0),
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SS
1571 'linkdate'=>$linkdate,'tags'=>str_replace(',',' ',$tags));
1572 if ($link['title']=='') $link['title']=$link['url']; // If title is empty, use the URL as title.
1573 $LINKSDB[$linkdate] = $link;
ad6c27b7 1574 $LINKSDB->savedb(); // Save to disk.
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SS
1575 pubsubhub();
1576
1577 // If we are called from the bookmarklet, we must close the popup:
d33c5d4c 1578 if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) { echo '<script>self.close();</script>'; exit; }
45034273 1579 $returnurl = ( isset($_POST['returnurl']) ? $_POST['returnurl'] : '?' );
b342b2a4 1580 $returnurl .= '#'.smallHash($linkdate); // Scroll to the link which has been edited.
35c2c4db 1581 if (strstr($returnurl, "do=addlink")) { $returnurl = '?'; } //if we come from ?do=addlink, set returnurl to homepage instead
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SS
1582 header('Location: '.$returnurl); // After saving the link, redirect to the page the user was on.
1583 exit;
1584 }
1585
1586 // -------- User clicked the "Cancel" button when editing a link.
1587 if (isset($_POST['cancel_edit']))
1588 {
ad6c27b7 1589 // If we are called from the bookmarklet, we must close the popup:
d33c5d4c 1590 if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) { echo '<script>self.close();</script>'; exit; }
45034273 1591 $returnurl = ( isset($_POST['returnurl']) ? $_POST['returnurl'] : '?' );
b342b2a4 1592 $returnurl .= '#'.smallHash($_POST['lf_linkdate']); // Scroll to the link which has been edited.
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SS
1593 header('Location: '.$returnurl); // After canceling, redirect to the page the user was on.
1594 exit;
1595 }
1596
ad6c27b7 1597 // -------- User clicked the "Delete" button when editing a link: Delete link from database.
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SS
1598 if (isset($_POST['delete_link']))
1599 {
1600 if (!tokenOk($_POST['token'])) die('Wrong token.');
1601 // We do not need to ask for confirmation:
ad6c27b7 1602 // - confirmation is handled by JavaScript
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SS
1603 // - we are protected from XSRF by the token.
1604 $linkdate=$_POST['lf_linkdate'];
1605 unset($LINKSDB[$linkdate]);
1606 $LINKSDB->savedb(); // save to disk
1607
1608 // If we are called from the bookmarklet, we must close the popup:
d33c5d4c 1609 if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) { echo '<script>self.close();</script>'; exit; }
d528433d 1610 // Pick where we're going to redirect
1611 // =============================================================
1612 // Basically, we can't redirect to where we were previously if it was a permalink
1613 // or an edit_link, because it would 404.
1614 // Cases:
1615 // - / : nothing in $_GET, redirect to self
1616 // - /?page : redirect to self
d33c5d4c 1617 // - /?searchterm : redirect to self (there might be other links)
d528433d 1618 // - /?searchtags : redirect to self
1619 // - /permalink : redirect to / (the link does not exist anymore)
1620 // - /?edit_link : redirect to / (the link does not exist anymore)
1621 // PHP treats the permalink as a $_GET variable, so we need to check if every condition for self
1622 // redirect is not satisfied, and only then redirect to /
1623 $location = "?";
1624 // Self redirection
1625 if (count($_GET) == 0 ||
1626 isset($_GET['page']) ||
1627 isset($_GET['searchterm']) ||
1628 isset($_GET['searchtags'])) {
1629
1630 if (isset($_POST['returnurl'])) {
1631 $location = $_POST['returnurl']; // Handle redirects given by the form
1632 }
1633
1634 if ($location === "?" &&
1635 isset($_SERVER['HTTP_REFERER'])) { // Handle HTTP_REFERER in case we're not coming from the same place.
1636 $location = $_SERVER['HTTP_REFERER'];
1637 }
1638 }
1639
1640 header('Location: ' . $location); // After deleting the link, redirect to appropriate location
45034273
SS
1641 exit;
1642 }
1643
1644 // -------- User clicked the "EDIT" button on a link: Display link edit form.
1645 if (isset($_GET['edit_link']))
1646 {
1647 $link = $LINKSDB[$_GET['edit_link']]; // Read database
1648 if (!$link) { header('Location: ?'); exit; } // Link not found in database.
1649 $PAGE = new pageBuilder;
1650 $PAGE->assign('linkcount',count($LINKSDB));
1651 $PAGE->assign('link',$link);
1652 $PAGE->assign('link_is_new',false);
1653 $PAGE->assign('token',getToken()); // XSRF protection.
1654 $PAGE->assign('http_referer',(isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : ''));
bdd1715b 1655 $PAGE->assign('tags', $LINKSDB->allTags());
45034273
SS
1656 $PAGE->renderPage('editlink');
1657 exit;
1658 }
1659
1660 // -------- User want to post a new link: Display link edit form.
1661 if (isset($_GET['post']))
1662 {
1663 $url=$_GET['post'];
1664
403a1994 1665
ad2a397c 1666 // We remove the annoying parameters added by FeedBurner, GoogleFeedProxy, Facebook...
baf5cbf2 1667 $annoyingpatterns = array('/[\?&]utm_source=[^&]*/', '/[\?&]utm_campaign=[^&]*/', '/[\?&]utm_medium=[^&]*/', '/#xtor=RSS-[^&]*/', '/[\?&]fb_[^&]*/', '/[\?&]__scoop[^&]*/', '/#tk\.rss_all\?/', '/[\?&]action_ref_map=[^&]*/', '/[\?&]action_type_map=[^&]*/', '/[\?&]action_object_map=[^&]*/');
ad2a397c 1668 foreach($annoyingpatterns as $pattern)
1669 {
403a1994 1670 $url = preg_replace($pattern, "", $url);
ad2a397c 1671 }
45034273
SS
1672
1673 $link_is_new = false;
1674 $link = $LINKSDB->getLinkFromUrl($url); // Check if URL is not already in database (in this case, we will edit the existing link)
1675 if (!$link)
1676 {
1677 $link_is_new = true; // This is a new link
1678 $linkdate = strval(date('Ymd_His'));
1679 $title = (empty($_GET['title']) ? '' : $_GET['title'] ); // Get title if it was provided in URL (by the bookmarklet).
7b2186a6 1680 $description = (empty($_GET['description']) ? '' : $_GET['description']); // Get description if it was provided in URL (by the bookmarklet). [Bronco added that]
3fac0a52 1681 $tags = (empty($_GET['tags']) ? '' : $_GET['tags'] ); // Get tags if it was provided in URL
732e683b 1682 $private = (!empty($_GET['private']) && $_GET['private'] === "1" ? 1 : 0); // Get private if it was provided in URL
45034273 1683 if (($url!='') && parse_url($url,PHP_URL_SCHEME)=='') $url = 'http://'.$url;
ad6c27b7 1684 // 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.)
45034273
SS
1685 if (empty($title) && parse_url($url,PHP_URL_SCHEME)=='http')
1686 {
1687 list($status,$headers,$data) = getHTTP($url,4); // Short timeout to keep the application responsive.
1688 // FIXME: Decode charset according to specified in either 1) HTTP response headers or 2) <head> in html
002ef0e5
SS
1689 if (strpos($status,'200 OK')!==false)
1690 {
1691 // Look for charset in html header.
1692 preg_match('#<meta .*charset=.*>#Usi', $data, $meta);
732e683b 1693
002ef0e5
SS
1694 // If found, extract encoding.
1695 if (!empty($meta[0]))
1696 {
1697 // Get encoding specified in header.
1698 preg_match('#charset="?(.*)"#si', $meta[0], $enc);
1699 // If charset not found, use utf-8.
1700 $html_charset = (!empty($enc[1])) ? strtolower($enc[1]) : 'utf-8';
1701 }
1702 else { $html_charset = 'utf-8'; }
732e683b 1703
002ef0e5
SS
1704 // Extract title
1705 $title = html_extract_title($data);
1706 if (!empty($title))
1707 {
1708 // Re-encode title in utf-8 if necessary.
1709 $title = ($html_charset == 'iso-8859-1') ? utf8_encode($title) : $title;
1710 }
1711 }
45034273 1712 }
27646ca5 1713 if ($url=='') // In case of empty URL, this is just a text (with a link that points to itself)
1714 {
1715 $url='?'.smallHash($linkdate);
1716 $title='Note: ';
1717 }
3fac0a52 1718 $link = array('linkdate'=>$linkdate,'title'=>$title,'url'=>$url,'description'=>$description,'tags'=>$tags,'private'=>$private);
45034273
SS
1719 }
1720
1721 $PAGE = new pageBuilder;
1722 $PAGE->assign('linkcount',count($LINKSDB));
1723 $PAGE->assign('link',$link);
1724 $PAGE->assign('link_is_new',$link_is_new);
1725 $PAGE->assign('token',getToken()); // XSRF protection.
1726 $PAGE->assign('http_referer',(isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : ''));
d33c5d4c 1727 $PAGE->assign('source',(isset($_GET['source']) ? $_GET['source'] : ''));
bdd1715b 1728 $PAGE->assign('tags', $LINKSDB->allTags());
45034273
SS
1729 $PAGE->renderPage('editlink');
1730 exit;
1731 }
1732
1733 // -------- Export as Netscape Bookmarks HTML file.
1734 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=export'))
1735 {
1736 if (empty($_GET['what']))
1737 {
1738 $PAGE = new pageBuilder;
1739 $PAGE->assign('linkcount',count($LINKSDB));
1740 $PAGE->renderPage('export');
1741 exit;
1742 }
1743 $exportWhat=$_GET['what'];
ad6c27b7 1744 if (!array_intersect(array('all','public','private'),array($exportWhat))) die('What are you trying to export???');
45034273
SS
1745
1746 header('Content-Type: text/html; charset=utf-8');
1747 header('Content-disposition: attachment; filename=bookmarks_'.$exportWhat.'_'.strval(date('Ymd_His')).'.html');
1748 $currentdate=date('Y/m/d H:i:s');
1749 echo <<<HTML
1750<!DOCTYPE NETSCAPE-Bookmark-file-1>
1751<!-- This is an automatically generated file.
1752 It will be read and overwritten.
1753 DO NOT EDIT! -->
1754<!-- Shaarli {$exportWhat} bookmarks export on {$currentdate} -->
1755<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8">
1756<TITLE>Bookmarks</TITLE>
1757<H1>Bookmarks</H1>
1758HTML;
1759 foreach($LINKSDB as $link)
1760 {
1761 if ($exportWhat=='all' ||
1762 ($exportWhat=='private' && $link['private']!=0) ||
1763 ($exportWhat=='public' && $link['private']==0))
1764 {
1765 echo '<DT><A HREF="'.htmlspecialchars($link['url']).'" ADD_DATE="'.linkdate2timestamp($link['linkdate']).'" PRIVATE="'.$link['private'].'"';
1766 if ($link['tags']!='') echo ' TAGS="'.htmlspecialchars(str_replace(' ',',',$link['tags'])).'"';
1767 echo '>'.htmlspecialchars($link['title'])."</A>\n";
1768 if ($link['description']!='') echo '<DD>'.htmlspecialchars($link['description'])."\n";
1769 }
1770 }
1771 exit;
1772 }
1773
1774 // -------- User is uploading a file for import
1775 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=upload'))
1776 {
1777 // If file is too big, some form field may be missing.
1778 if (!isset($_POST['token']) || (!isset($_FILES)) || (isset($_FILES['filetoupload']['size']) && $_FILES['filetoupload']['size']==0))
1779 {
1780 $returnurl = ( empty($_SERVER['HTTP_REFERER']) ? '?' : $_SERVER['HTTP_REFERER'] );
fe16b01e 1781 echo '<script>alert("The file you are trying to upload is probably bigger than what this webserver can accept ('.getMaxFileSize().' bytes). Please upload in smaller chunks.");document.location=\''.htmlspecialchars($returnurl).'\';</script>';
45034273
SS
1782 exit;
1783 }
1784 if (!tokenOk($_POST['token'])) die('Wrong token.');
1785 importFile();
1786 exit;
1787 }
1788
1789 // -------- Show upload/import dialog:
1790 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=import'))
1791 {
1792 $PAGE = new pageBuilder;
1793 $PAGE->assign('linkcount',count($LINKSDB));
1794 $PAGE->assign('token',getToken());
1795 $PAGE->assign('maxfilesize',getMaxFileSize());
1796 $PAGE->renderPage('import');
1797 exit;
1798 }
1799
1800 // -------- Otherwise, simply display search form and links:
1801 $PAGE = new pageBuilder;
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SS
1802 buildLinkList($PAGE,$LINKSDB); // Compute list of links to display
1803 $PAGE->renderPage('linklist');
1804 exit;
1805}
1806
1807// -----------------------------------------------------------------------------------------------
1808// Process the import file form.
1809function importFile()
1810{
1811 if (!(isLoggedIn() || $GLOBALS['config']['OPEN_SHAARLI'])) { die('Not allowed.'); }
1812 $LINKSDB=new linkdb(isLoggedIn() || $GLOBALS['config']['OPEN_SHAARLI']); // Read links from database (and filter private links if used it not logged in).
1813 $filename=$_FILES['filetoupload']['name'];
1814 $filesize=$_FILES['filetoupload']['size'];
1815 $data=file_get_contents($_FILES['filetoupload']['tmp_name']);
ad6c27b7 1816 $private = (empty($_POST['private']) ? 0 : 1); // Should the links be imported as private?
1817 $overwrite = !empty($_POST['overwrite']) ; // Should the imported links overwrite existing ones?
45034273
SS
1818 $import_count=0;
1819
1820 // Sniff file type:
1821 $type='unknown';
1822 if (startsWith($data,'<!DOCTYPE NETSCAPE-Bookmark-file-1>')) $type='netscape'; // Netscape bookmark file (aka Firefox).
1823
1824 // Then import the bookmarks.
1825 if ($type=='netscape')
1826 {
1827 // This is a standard Netscape-style bookmark file.
ad6c27b7 1828 // This format is supported by all browsers (except IE, of course), also Delicious, Diigo and others.
45034273
SS
1829 foreach(explode('<DT>',$data) as $html) // explode is very fast
1830 {
1831 $link = array('linkdate'=>'','title'=>'','url'=>'','description'=>'','tags'=>'','private'=>0);
1832 $d = explode('<DD>',$html);
1833 if (startswith($d[0],'<A '))
1834 {
1835 $link['description'] = (isset($d[1]) ? html_entity_decode(trim($d[1]),ENT_QUOTES,'UTF-8') : ''); // Get description (optional)
1836 preg_match('!<A .*?>(.*?)</A>!i',$d[0],$matches); $link['title'] = (isset($matches[1]) ? trim($matches[1]) : ''); // Get title
1837 $link['title'] = html_entity_decode($link['title'],ENT_QUOTES,'UTF-8');
1838 preg_match_all('! ([A-Z_]+)=\"(.*?)"!i',$html,$matches,PREG_SET_ORDER); // Get all other attributes
1839 $raw_add_date=0;
1840 foreach($matches as $m)
1841 {
1842 $attr=$m[1]; $value=$m[2];
1843 if ($attr=='HREF') $link['url']=html_entity_decode($value,ENT_QUOTES,'UTF-8');
fc93ae1d
AA
1844 elseif ($attr=='ADD_DATE')
1845 {
1846 $raw_add_date=intval($value);
1847 if ($raw_add_date>30000000000) $raw_add_date/=1000; //If larger than year 2920, then was likely stored in milliseconds instead of seconds
1848 }
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SS
1849 elseif ($attr=='PRIVATE') $link['private']=($value=='0'?0:1);
1850 elseif ($attr=='TAGS') $link['tags']=html_entity_decode(str_replace(',',' ',$value),ENT_QUOTES,'UTF-8');
1851 }
1852 if ($link['url']!='')
1853 {
1854 if ($private==1) $link['private']=1;
1855 $dblink = $LINKSDB->getLinkFromUrl($link['url']); // See if the link is already in database.
1856 if ($dblink==false)
1857 { // Link not in database, let's import it...
1858 if (empty($raw_add_date)) $raw_add_date=time(); // In case of shitty bookmark file with no ADD_DATE
1859
1860 // Make sure date/time is not already used by another link.
1861 // (Some bookmark files have several different links with the same ADD_DATE)
ad6c27b7 1862 // We increment date by 1 second until we find a date which is not used in DB.
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1863 // (so that links that have the same date/time are more or less kept grouped by date, but do not conflict.)
1864 while (!empty($LINKSDB[date('Ymd_His',$raw_add_date)])) { $raw_add_date++; }// Yes, I know it's ugly.
1865 $link['linkdate']=date('Ymd_His',$raw_add_date);
1866 $LINKSDB[$link['linkdate']] = $link;
1867 $import_count++;
1868 }
ad6c27b7 1869 else // Link already present in database.
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1870 {
1871 if ($overwrite)
1872 { // If overwrite is required, we import link data, except date/time.
1873 $link['linkdate']=$dblink['linkdate'];
1874 $LINKSDB[$link['linkdate']] = $link;
1875 $import_count++;
1876 }
1877 }
1878
1879 }
1880 }
1881 }
1882 $LINKSDB->savedb();
1883
fe16b01e 1884 echo '<script>alert("File '.json_encode($filename).' ('.$filesize.' bytes) was successfully processed: '.$import_count.' links imported.");document.location=\'?\';</script>';
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1885 }
1886 else
1887 {
fe16b01e 1888 echo '<script>alert("File '.json_encode($filename).' ('.$filesize.' bytes) has an unknown file format. Nothing was imported.");document.location=\'?\';</script>';
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1889 }
1890}
1891
1892// -----------------------------------------------------------------------------------------------
1893// Template for the list of links (<div id="linklist">)
1894// This function fills all the necessary fields in the $PAGE for the template 'linklist.html'
1895function buildLinkList($PAGE,$LINKSDB)
1896{
1897 // ---- Filter link database according to parameters
1898 $linksToDisplay=array();
1899 $search_type='';
1900 $search_crits='';
1901 if (isset($_GET['searchterm'])) // Fulltext search
1902 {
1903 $linksToDisplay = $LINKSDB->filterFulltext(trim($_GET['searchterm']));
59c90f58 1904 if ($GLOBALS['config']['HIDE_PUBLIC_LINKS'] && !isLoggedIn())
1905 $linksToDisplay = array();
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1906 $search_crits=htmlspecialchars(trim($_GET['searchterm']));
1907 $search_type='fulltext';
1908 }
1909 elseif (isset($_GET['searchtags'])) // Search by tag
1910 {
1911 $linksToDisplay = $LINKSDB->filterTags(trim($_GET['searchtags']));
59c90f58 1912 if ($GLOBALS['config']['HIDE_PUBLIC_LINKS'] && !isLoggedIn())
1913 $linksToDisplay = array();
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1914 $search_crits=explode(' ',trim($_GET['searchtags']));
1915 $search_type='tags';
1916 }
1917 elseif (isset($_SERVER['QUERY_STRING']) && preg_match('/[a-zA-Z0-9-_@]{6}(&.+?)?/',$_SERVER['QUERY_STRING'])) // Detect smallHashes in URL
1918 {
1919 $linksToDisplay = $LINKSDB->filterSmallHash(substr(trim($_SERVER["QUERY_STRING"], '/'),0,6));
1920 if (count($linksToDisplay)==0)
1921 {
1922 header($_SERVER["SERVER_PROTOCOL"]." 404 Not Found");
1923 echo '<h1>404 Not found.</h1>Oh crap. The link you are trying to reach does not exist or has been deleted.';
ad6c27b7 1924 echo '<br>You would mind <a href="?">clicking here</a>?';
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1925 exit;
1926 }
1927 $search_type='permalink';
1928 }
8fa1ebd6 1929 // We chose to disable all private links and the user isn't logged in, do not return any link.
caee7ff9 1930 else if ($GLOBALS['config']['HIDE_PUBLIC_LINKS'] && !isLoggedIn())
8fa1ebd6 1931 $linksToDisplay = array();
45034273 1932 else
ad6c27b7 1933 $linksToDisplay = $LINKSDB; // Otherwise, display without filtering.
bb8f712d 1934
8fa1ebd6 1935
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1936 // Option: Show only private links
1937 if (!empty($_SESSION['privateonly']))
1938 {
1939 $tmp = array();
1940 foreach($linksToDisplay as $linkdate=>$link)
1941 {
1942 if ($link['private']!=0) $tmp[$linkdate]=$link;
1943 }
1944 $linksToDisplay=$tmp;
1945 }
1946
1947 // ---- Handle paging.
ad6c27b7 1948 /* Can someone explain to me why you get the following error when using array_keys() on an object which implements the interface ArrayAccess???
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1949 "Warning: array_keys() expects parameter 1 to be array, object given in ... "
1950 If my class implements ArrayAccess, why won't array_keys() accept it ? ( $keys=array_keys($linksToDisplay); )
1951 */
ad6c27b7 1952 $keys=array(); foreach($linksToDisplay as $key=>$value) { $keys[]=$key; } // Stupid and ugly. Thanks PHP.
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1953
1954 // If there is only a single link, we change on-the-fly the title of the page.
1955 if (count($linksToDisplay)==1) $GLOBALS['pagetitle'] = $linksToDisplay[$keys[0]]['title'].' - '.$GLOBALS['title'];
1956
1957 // Select articles according to paging.
1958 $pagecount = ceil(count($keys)/$_SESSION['LINKS_PER_PAGE']);
1959 $pagecount = ($pagecount==0 ? 1 : $pagecount);
1960 $page=( empty($_GET['page']) ? 1 : intval($_GET['page']));
1961 $page = ( $page<1 ? 1 : $page );
1962 $page = ( $page>$pagecount ? $pagecount : $page );
1963 $i = ($page-1)*$_SESSION['LINKS_PER_PAGE']; // Start index.
1964 $end = $i+$_SESSION['LINKS_PER_PAGE'];
1965 $linkDisp=array(); // Links to display
1966 while ($i<$end && $i<count($keys))
1967 {
1968 $link = $linksToDisplay[$keys[$i]];
1969 $link['description']=nl2br(keepMultipleSpaces(text2clickable(htmlspecialchars($link['description']))));
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1970 $title=$link['title'];
1971 $classLi = $i%2!=0 ? '' : 'publicLinkHightLight';
45034273 1972 $link['class'] = ($link['private']==0 ? $classLi : 'private');
bec18701 1973 $link['timestamp']=linkdate2timestamp($link['linkdate']);
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1974 $taglist = explode(' ',$link['tags']);
1975 uasort($taglist, 'strcasecmp');
dd62b9ba 1976 $link['taglist']=$taglist;
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1977
1978 if ($link["url"][0] === '?' && // Check for both signs of a note: starting with ? and 7 chars long. I doubt that you'll post any links that look like this.
1979 strlen($link["url"]) === 7) {
1980 $link["url"] = indexUrl() . $link["url"];
1981 }
d33c5d4c 1982
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1983 $linkDisp[$keys[$i]] = $link;
1984 $i++;
1985 }
bb8f712d 1986
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1987 // Compute paging navigation
1988 $searchterm= ( empty($_GET['searchterm']) ? '' : '&searchterm='.$_GET['searchterm'] );
1989 $searchtags= ( empty($_GET['searchtags']) ? '' : '&searchtags='.$_GET['searchtags'] );
1990 $paging='';
1991 $previous_page_url=''; if ($i!=count($keys)) $previous_page_url='?page='.($page+1).$searchterm.$searchtags;
1992 $next_page_url='';if ($page>1) $next_page_url='?page='.($page-1).$searchterm.$searchtags;
1993
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1994 $token = ''; if (isLoggedIn()) $token=getToken();
1995
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1996 // Fill all template fields.
1997 $PAGE->assign('linkcount',count($LINKSDB));
1998 $PAGE->assign('previous_page_url',$previous_page_url);
1999 $PAGE->assign('next_page_url',$next_page_url);
2000 $PAGE->assign('page_current',$page);
2001 $PAGE->assign('page_max',$pagecount);
2002 $PAGE->assign('result_count',count($linksToDisplay));
2003 $PAGE->assign('search_type',$search_type);
bb8f712d 2004 $PAGE->assign('search_crits',$search_crits);
ad6c27b7 2005 $PAGE->assign('redirector',empty($GLOBALS['redirector']) ? '' : $GLOBALS['redirector']); // Optional redirector URL.
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2006 $PAGE->assign('token',$token);
2007 $PAGE->assign('links',$linkDisp);
2008 return;
2009}
2010
2011// Compute the thumbnail for a link.
bb8f712d 2012//
ad6c27b7 2013// With a link to the original URL.
45034273 2014// Understands various services (youtube.com...)
ad6c27b7 2015// Input: $url = URL for which the thumbnail must be found.
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2016// $href = if provided, this URL will be followed instead of $url
2017// Returns an associative array with thumbnail attributes (src,href,width,height,style,alt)
2018// Some of them may be missing.
2019// Return an empty array if no thumbnail available.
2020function computeThumbnail($url,$href=false)
2021{
2022 if (!$GLOBALS['config']['ENABLE_THUMBNAILS']) return array();
2023 if ($href==false) $href=$url;
2024
2025 // For most hosts, the URL of the thumbnail can be easily deduced from the URL of the link.
ad6c27b7 2026 // (e.g. http://www.youtube.com/watch?v=spVypYk4kto ---> http://img.youtube.com/vi/spVypYk4kto/default.jpg )
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2027 // ^^^^^^^^^^^ ^^^^^^^^^^^
2028 $domain = parse_url($url,PHP_URL_HOST);
2029 if ($domain=='youtube.com' || $domain=='www.youtube.com')
2030 {
2031 parse_str(parse_url($url,PHP_URL_QUERY), $params); // Extract video ID and get thumbnail
1a663a0f 2032 if (!empty($params['v'])) return array('src'=>'https://img.youtube.com/vi/'.$params['v'].'/default.jpg',
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2033 'href'=>$href,'width'=>'120','height'=>'90','alt'=>'YouTube thumbnail');
2034 }
2035 if ($domain=='youtu.be') // Youtube short links
2036 {
2037 $path = parse_url($url,PHP_URL_PATH);
1a663a0f 2038 return array('src'=>'https://img.youtube.com/vi'.$path.'/default.jpg',
bb8f712d 2039 'href'=>$href,'width'=>'120','height'=>'90','alt'=>'YouTube thumbnail');
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2040 }
2041 if ($domain=='pix.toile-libre.org') // pix.toile-libre.org image hosting
2042 {
2043 parse_str(parse_url($url,PHP_URL_QUERY), $params); // Extract image filename.
2044 if (!empty($params) && !empty($params['img'])) return array('src'=>'http://pix.toile-libre.org/upload/thumb/'.urlencode($params['img']),
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KT
2045 'href'=>$href,'style'=>'max-width:120px; max-height:150px','alt'=>'pix.toile-libre.org thumbnail');
2046 }
2047
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2048 if ($domain=='imgur.com')
2049 {
2050 $path = parse_url($url,PHP_URL_PATH);
2051 if (startsWith($path,'/a/')) return array(); // Thumbnails for albums are not available.
1a663a0f 2052 if (startsWith($path,'/r/')) return array('src'=>'https://i.imgur.com/'.basename($path).'s.jpg',
45034273 2053 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
1a663a0f 2054 if (startsWith($path,'/gallery/')) return array('src'=>'https://i.imgur.com'.substr($path,8).'s.jpg',
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2055 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
2056
1a663a0f 2057 if (substr_count($path,'/')==1) return array('src'=>'https://i.imgur.com/'.substr($path,1).'s.jpg',
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2058 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
2059 }
2060 if ($domain=='i.imgur.com')
2061 {
2062 $pi = pathinfo(parse_url($url,PHP_URL_PATH));
1a663a0f 2063 if (!empty($pi['filename'])) return array('src'=>'https://i.imgur.com/'.$pi['filename'].'s.jpg',
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2064 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
2065 }
2066 if ($domain=='dailymotion.com' || $domain=='www.dailymotion.com')
2067 {
2068 if (strpos($url,'dailymotion.com/video/')!==false)
2069 {
2070 $thumburl=str_replace('dailymotion.com/video/','dailymotion.com/thumbnail/video/',$url);
2071 return array('src'=>$thumburl,
2072 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'DailyMotion thumbnail');
2073 }
2074 }
2075 if (endsWith($domain,'.imageshack.us'))
2076 {
2077 $ext=strtolower(pathinfo($url,PATHINFO_EXTENSION));
2078 if ($ext=='jpg' || $ext=='jpeg' || $ext=='png' || $ext=='gif')
2079 {
2080 $thumburl = substr($url,0,strlen($url)-strlen($ext)).'th.'.$ext;
2081 return array('src'=>$thumburl,
2082 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'imageshack.us thumbnail');
2083 }
2084 }
2085
2086 // Some other hosts are SLOW AS HELL and usually require an extra HTTP request to get the thumbnail URL.
2087 // So we deport the thumbnail generation in order not to slow down page generation
2088 // (and we also cache the thumbnail)
2089
2090 if (!$GLOBALS['config']['ENABLE_LOCALCACHE']) return array(); // If local cache is disabled, no thumbnails for services which require the use a local cache.
2091
2092 if ($domain=='flickr.com' || endsWith($domain,'.flickr.com')
2093 || $domain=='vimeo.com'
2094 || $domain=='ted.com' || endsWith($domain,'.ted.com')
2095 || $domain=='xkcd.com' || endsWith($domain,'.xkcd.com')
2096 )
2097 {
2098 if ($domain=='vimeo.com')
ad6c27b7 2099 { // Make sure this vimeo URL points to a video (/xxx... where xxx is numeric)
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2100 $path = parse_url($url,PHP_URL_PATH);
2101 if (!preg_match('!/\d+.+?!',$path)) return array(); // This is not a single video URL.
2102 }
2103 if ($domain=='xkcd.com' || endsWith($domain,'.xkcd.com'))
ad6c27b7 2104 { // Make sure this URL points to a single comic (/xxx... where xxx is numeric)
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2105 $path = parse_url($url,PHP_URL_PATH);
2106 if (!preg_match('!/\d+.+?!',$path)) return array();
2107 }
2108 if ($domain=='ted.com' || endsWith($domain,'.ted.com'))
ad6c27b7 2109 { // Make sure this TED URL points to a video (/talks/...)
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2110 $path = parse_url($url,PHP_URL_PATH);
2111 if ("/talks/" !== substr($path,0,7)) return array(); // This is not a single video URL.
2112 }
2113 $sign = hash_hmac('sha256', $url, $GLOBALS['salt']); // We use the salt to sign data (it's random, secret, and specific to each installation)
2114 return array('src'=>indexUrl().'?do=genthumbnail&hmac='.htmlspecialchars($sign).'&url='.urlencode($url),
2115 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'thumbnail');
2116 }
2117
2118 // For all other, we try to make a thumbnail of links ending with .jpg/jpeg/png/gif
2119 // Technically speaking, we should download ALL links and check their Content-Type to see if they are images.
2120 // But using the extension will do.
2121 $ext=strtolower(pathinfo($url,PATHINFO_EXTENSION));
2122 if ($ext=='jpg' || $ext=='jpeg' || $ext=='png' || $ext=='gif')
2123 {
2124 $sign = hash_hmac('sha256', $url, $GLOBALS['salt']); // We use the salt to sign data (it's random, secret, and specific to each installation)
2125 return array('src'=>indexUrl().'?do=genthumbnail&hmac='.htmlspecialchars($sign).'&url='.urlencode($url),
bb8f712d 2126 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'thumbnail');
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2127 }
2128 return array(); // No thumbnail.
2129
2130}
2131
2132
2133// Returns the HTML code to display a thumbnail for a link
2134// with a link to the original URL.
2135// Understands various services (youtube.com...)
ad6c27b7 2136// Input: $url = URL for which the thumbnail must be found.
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2137// $href = if provided, this URL will be followed instead of $url
2138// Returns '' if no thumbnail available.
2139function thumbnail($url,$href=false)
2140{
2141 $t = computeThumbnail($url,$href);
2142 if (count($t)==0) return ''; // Empty array = no thumbnail for this URL.
bb8f712d 2143
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2144 $html='<a href="'.htmlspecialchars($t['href']).'"><img src="'.htmlspecialchars($t['src']).'"';
2145 if (!empty($t['width'])) $html.=' width="'.htmlspecialchars($t['width']).'"';
2146 if (!empty($t['height'])) $html.=' height="'.htmlspecialchars($t['height']).'"';
2147 if (!empty($t['style'])) $html.=' style="'.htmlspecialchars($t['style']).'"';
2148 if (!empty($t['alt'])) $html.=' alt="'.htmlspecialchars($t['alt']).'"';
2149 $html.='></a>';
2150 return $html;
2151}
2152
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2153// Returns the HTML code to display a thumbnail for a link
2154// for the picture wall (using lazy image loading)
2155// Understands various services (youtube.com...)
ad6c27b7 2156// Input: $url = URL for which the thumbnail must be found.
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2157// $href = if provided, this URL will be followed instead of $url
2158// Returns '' if no thumbnail available.
2159function lazyThumbnail($url,$href=false)
2160{
bb8f712d 2161 $t = computeThumbnail($url,$href);
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2162 if (count($t)==0) return ''; // Empty array = no thumbnail for this URL.
2163
2164 $html='<a href="'.htmlspecialchars($t['href']).'">';
bb8f712d 2165
34047d23
A
2166 // Lazy image
2167 $html.='<img class="b-lazy" src="#" data-src="'.htmlspecialchars($t['src']).'"';
858c5c2b 2168
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2169 if (!empty($t['width'])) $html.=' width="'.htmlspecialchars($t['width']).'"';
2170 if (!empty($t['height'])) $html.=' height="'.htmlspecialchars($t['height']).'"';
2171 if (!empty($t['style'])) $html.=' style="'.htmlspecialchars($t['style']).'"';
2172 if (!empty($t['alt'])) $html.=' alt="'.htmlspecialchars($t['alt']).'"';
2173 $html.='>';
bb8f712d 2174
ad6c27b7 2175 // No-JavaScript fallback.
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2176 $html.='<noscript><img src="'.htmlspecialchars($t['src']).'"';
2177 if (!empty($t['width'])) $html.=' width="'.htmlspecialchars($t['width']).'"';
2178 if (!empty($t['height'])) $html.=' height="'.htmlspecialchars($t['height']).'"';
2179 if (!empty($t['style'])) $html.=' style="'.htmlspecialchars($t['style']).'"';
2180 if (!empty($t['alt'])) $html.=' alt="'.htmlspecialchars($t['alt']).'"';
2181 $html.='></noscript></a>';
bb8f712d 2182
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2183 return $html;
2184}
2185
2186
2187// -----------------------------------------------------------------------------------------------
2188// Installation
2189// This function should NEVER be called if the file data/config.php exists.
2190function install()
2191{
2192 // On free.fr host, make sure the /sessions directory exists, otherwise login will not work.
f6a6ca0a 2193 if (endsWith($_SERVER['HTTP_HOST'],'.free.fr') && !is_dir($_SERVER['DOCUMENT_ROOT'].'/sessions')) mkdir($_SERVER['DOCUMENT_ROOT'].'/sessions',0705);
45034273 2194
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SS
2195
2196 // This part makes sure sessions works correctly.
2197 // (Because on some hosts, session.save_path may not be set correctly,
2198 // or we may not have write access to it.)
2199 if (isset($_GET['test_session']) && ( !isset($_SESSION) || !isset($_SESSION['session_tested']) || $_SESSION['session_tested']!='Working'))
2200 { // Step 2: Check if data in session is correct.
2201 echo '<pre>Sessions do not seem to work correctly on your server.<br>';
2202 echo 'Make sure the variable session.save_path is set correctly in your php config, and that you have write access to it.<br>';
01ec1791 2203 echo 'It currently points to '.session_save_path().'<br>';
2204 echo 'Check that the hostname used to access Shaarli contains a dot. On some browsers, accessing your server via a hostname like \'localhost\' or any custom hostname without a dot causes cookie storage to fail. We recommend accessing your server via it\'s IP address or Fully Qualified Domain Name.<br>';
2205 echo '<br><a href="?">Click to try again.</a></pre>';
f37664a2
SS
2206 die;
2207 }
2208 if (!isset($_SESSION['session_tested']))
2209 { // Step 1 : Try to store data in session and reload page.
2210 $_SESSION['session_tested'] = 'Working'; // Try to set a variable in session.
2211 header('Location: '.indexUrl().'?test_session'); // Redirect to check stored data.
2212 }
2213 if (isset($_GET['test_session']))
ad6c27b7 2214 { // Step 3: Sessions are OK. Remove test parameter from URL.
f37664a2
SS
2215 header('Location: '.indexUrl());
2216 }
2217
2218
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2219 if (!empty($_POST['setlogin']) && !empty($_POST['setpassword']))
2220 {
2221 $tz = 'UTC';
2222 if (!empty($_POST['continent']) && !empty($_POST['city']))
2223 if (isTZvalid($_POST['continent'],$_POST['city']))
2224 $tz = $_POST['continent'].'/'.$_POST['city'];
2225 $GLOBALS['timezone'] = $tz;
2226 // Everything is ok, let's create config file.
2227 $GLOBALS['login'] = $_POST['setlogin'];
2228 $GLOBALS['salt'] = sha1(uniqid('',true).'_'.mt_rand()); // Salt renders rainbow-tables attacks useless.
2229 $GLOBALS['hash'] = sha1($_POST['setpassword'].$GLOBALS['login'].$GLOBALS['salt']);
2230 $GLOBALS['title'] = (empty($_POST['title']) ? 'Shared links on '.htmlspecialchars(indexUrl()) : $_POST['title'] );
329e0768 2231 $GLOBALS['config']['ENABLE_UPDATECHECK'] = !empty($_POST['updateCheck']);
45034273 2232 writeConfig();
fe16b01e 2233 echo '<script>alert("Shaarli is now configured. Please enter your login/password and start shaaring your links!");document.location=\'?do=login\';</script>';
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2234 exit;
2235 }
2236
2237 // Display config form:
2238 list($timezone_form,$timezone_js) = templateTZform();
04751e04 2239 $timezone_html=''; if ($timezone_form!='') $timezone_html='<tr><td><b>Timezone:</b></td><td>'.$timezone_form.'</td></tr>';
bb8f712d 2240
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2241 $PAGE = new pageBuilder;
2242 $PAGE->assign('timezone_html',$timezone_html);
2243 $PAGE->assign('timezone_js',$timezone_js);
2244 $PAGE->renderPage('install');
2245 exit;
2246}
2247
ad6c27b7 2248// Generates the timezone selection form and JavaScript.
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2249// Input: (optional) current timezone (can be 'UTC/UTC'). It will be pre-selected.
2250// Output: array(html,js)
2251// Example: list($htmlform,$js) = templateTZform('Europe/Paris'); // Europe/Paris pre-selected.
ad6c27b7 2252// Returns array('','') if server does not support timezones list. (e.g. PHP 5.1 on free.fr)
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2253function templateTZform($ptz=false)
2254{
ad6c27b7 2255 if (function_exists('timezone_identifiers_list')) // because of old PHP version (5.1) which can be found on free.fr
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2256 {
2257 // Try to split the provided timezone.
2258 if ($ptz==false) { $l=timezone_identifiers_list(); $ptz=$l[0]; }
2259 $spos=strpos($ptz,'/'); $pcontinent=substr($ptz,0,$spos); $pcity=substr($ptz,$spos+1);
2260
2261 // Display config form:
2262 $timezone_form = '';
2263 $timezone_js = '';
ad6c27b7 2264 // The list is in the form "Europe/Paris", "America/Argentina/Buenos_Aires"...
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2265 // We split the list in continents/cities.
2266 $continents = array();
2267 $cities = array();
2268 foreach(timezone_identifiers_list() as $tz)
2269 {
2270 if ($tz=='UTC') $tz='UTC/UTC';
2271 $spos = strpos($tz,'/');
2272 if ($spos!==false)
2273 {
2274 $continent=substr($tz,0,$spos); $city=substr($tz,$spos+1);
2275 $continents[$continent]=1;
2276 if (!isset($cities[$continent])) $cities[$continent]='';
e5aab50a 2277 $cities[$continent].='<option value="'.$city.'"'.($pcity==$city?' selected':'').'>'.$city.'</option>';
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SS
2278 }
2279 }
2280 $continents_html = '';
2281 $continents = array_keys($continents);
2282 foreach($continents as $continent)
e5aab50a 2283 $continents_html.='<option value="'.$continent.'"'.($pcontinent==$continent?' selected':'').'>'.$continent.'</option>';
45034273 2284 $cities_html = $cities[$pcontinent];
858c5c2b
SS
2285 $timezone_form = "Continent: <select name=\"continent\" id=\"continent\" onChange=\"onChangecontinent();\">${continents_html}</select>";
2286 $timezone_form .= "&nbsp;&nbsp;&nbsp;&nbsp;City: <select name=\"city\" id=\"city\">${cities[$pcontinent]}</select><br />";
fe16b01e 2287 $timezone_js = "<script>";
45034273
SS
2288 $timezone_js .= "function onChangecontinent(){document.getElementById(\"city\").innerHTML = citiescontinent[document.getElementById(\"continent\").value];}";
2289 $timezone_js .= "var citiescontinent = ".json_encode($cities).";" ;
2290 $timezone_js .= "</script>" ;
2291 return array($timezone_form,$timezone_js);
2292 }
2293 return array('','');
2294}
2295
2296// Tells if a timezone is valid or not.
2297// If not valid, returns false.
2298// If system does not support timezone list, returns false.
2299function isTZvalid($continent,$city)
2300{
2301 $tz = $continent.'/'.$city;
ad6c27b7 2302 if (function_exists('timezone_identifiers_list')) // because of old PHP version (5.1) which can be found on free.fr
45034273 2303 {
ad6c27b7 2304 if (in_array($tz, timezone_identifiers_list())) // it's a valid timezone?
45034273
SS
2305 return true;
2306 }
2307 return false;
2308}
3385af12
LM
2309if (!function_exists('json_encode')) {
2310 function json_encode($data) {
2311 switch ($type = gettype($data)) {
2312 case 'NULL':
2313 return 'null';
2314 case 'boolean':
2315 return ($data ? 'true' : 'false');
2316 case 'integer':
2317 case 'double':
2318 case 'float':
2319 return $data;
2320 case 'string':
2321 return '"' . addslashes($data) . '"';
2322 case 'object':
2323 $data = get_object_vars($data);
2324 case 'array':
2325 $output_index_count = 0;
2326 $output_indexed = array();
2327 $output_associative = array();
2328 foreach ($data as $key => $value) {
2329 $output_indexed[] = json_encode($value);
2330 $output_associative[] = json_encode($key) . ':' . json_encode($value);
2331 if ($output_index_count !== NULL && $output_index_count++ !== $key) {
2332 $output_index_count = NULL;
2333 }
2334 }
2335 if ($output_index_count !== NULL) {
2336 return '[' . implode(',', $output_indexed) . ']';
2337 } else {
2338 return '{' . implode(',', $output_associative) . '}';
2339 }
2340 default:
2341 return ''; // Not supported
2342 }
2343 }
2344}
45034273 2345
45034273
SS
2346// Re-write configuration file according to globals.
2347// Requires some $GLOBALS to be set (login,hash,salt,title).
ad6c27b7 2348// If the config file cannot be saved, an error message is displayed and the user is redirected to "Tools" menu.
45034273
SS
2349// (otherwise, the function simply returns.)
2350function writeConfig()
2351{
2352 if (is_file($GLOBALS['config']['CONFIG_FILE']) && !isLoggedIn()) die('You are not authorized to alter config.'); // Only logged in user can alter config.
45034273
SS
2353 $config='<?php $GLOBALS[\'login\']='.var_export($GLOBALS['login'],true).'; $GLOBALS[\'hash\']='.var_export($GLOBALS['hash'],true).'; $GLOBALS[\'salt\']='.var_export($GLOBALS['salt'],true).'; ';
2354 $config .='$GLOBALS[\'timezone\']='.var_export($GLOBALS['timezone'],true).'; date_default_timezone_set('.var_export($GLOBALS['timezone'],true).'); $GLOBALS[\'title\']='.var_export($GLOBALS['title'],true).';';
ebb2880d 2355 $config .= '$GLOBALS[\'titleLink\']='.var_export($GLOBALS['titleLink'],true).'; ';
45034273
SS
2356 $config .= '$GLOBALS[\'redirector\']='.var_export($GLOBALS['redirector'],true).'; ';
2357 $config .= '$GLOBALS[\'disablesessionprotection\']='.var_export($GLOBALS['disablesessionprotection'],true).'; ';
858c5c2b 2358 $config .= '$GLOBALS[\'disablejquery\']='.var_export($GLOBALS['disablejquery'],true).'; ';
bb8f712d 2359 $config .= '$GLOBALS[\'privateLinkByDefault\']='.var_export($GLOBALS['privateLinkByDefault'],true).'; ';
ed5b38dd 2360 $config .= '$GLOBALS[\'config\'][\'ENABLE_RSS_PERMALINKS\']='.var_export($GLOBALS['config']['ENABLE_RSS_PERMALINKS'], true).'; ';
329e0768 2361 $config .= '$GLOBALS[\'config\'][\'ENABLE_UPDATECHECK\']='.var_export($GLOBALS['config']['ENABLE_UPDATECHECK'], true).'; ';
caee7ff9 2362 $config .= '$GLOBALS[\'config\'][\'HIDE_PUBLIC_LINKS\']='.var_export($GLOBALS['config']['HIDE_PUBLIC_LINKS'], true).'; ';
45034273
SS
2363 $config .= ' ?>';
2364 if (!file_put_contents($GLOBALS['config']['CONFIG_FILE'],$config) || strcmp(file_get_contents($GLOBALS['config']['CONFIG_FILE']),$config)!=0)
2365 {
fe16b01e 2366 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>';
45034273
SS
2367 exit;
2368 }
2369}
2370
ad6c27b7 2371/* Because some f*cking services like flickr require an extra HTTP request to get the thumbnail URL,
45034273 2372 I have deported the thumbnail URL code generation here, otherwise this would slow down page generation.
ad6c27b7 2373 The following function takes the URL a link (e.g. a flickr page) and return the proper thumbnail.
2374 This function is called by passing the URL:
45034273 2375 http://mywebsite.com/shaarli/?do=genthumbnail&hmac=[HMAC]&url=[URL]
ad6c27b7 2376 [URL] is the URL of the link (e.g. a flickr page)
45034273
SS
2377 [HMAC] is the signature for the [URL] (so that these URL cannot be forged).
2378 The function below will fetch the image from the webservice and store it in the cache.
2379*/
2380function genThumbnail()
2381{
2382 // Make sure the parameters in the URL were generated by us.
2383 $sign = hash_hmac('sha256', $_GET['url'], $GLOBALS['salt']);
ad6c27b7 2384 if ($sign!=$_GET['hmac']) die('Naughty boy!');
45034273
SS
2385
2386 // Let's see if we don't already have the image for this URL in the cache.
2387 $thumbname=hash('sha1',$_GET['url']).'.jpg';
2388 if (is_file($GLOBALS['config']['CACHEDIR'].'/'.$thumbname))
2389 { // We have the thumbnail, just serve it:
2390 header('Content-Type: image/jpeg');
2391 echo file_get_contents($GLOBALS['config']['CACHEDIR'].'/'.$thumbname);
2392 return;
2393 }
2394 // We may also serve a blank image (if service did not respond)
2395 $blankname=hash('sha1',$_GET['url']).'.gif';
2396 if (is_file($GLOBALS['config']['CACHEDIR'].'/'.$blankname))
2397 {
2398 header('Content-Type: image/gif');
2399 echo file_get_contents($GLOBALS['config']['CACHEDIR'].'/'.$blankname);
2400 return;
2401 }
2402
2403 // Otherwise, generate the thumbnail.
2404 $url = $_GET['url'];
2405 $domain = parse_url($url,PHP_URL_HOST);
2406
2407 if ($domain=='flickr.com' || endsWith($domain,'.flickr.com'))
2408 {
ad6c27b7 2409 // Crude replacement to handle new flickr domain policy (They prefer www. now)
45034273
SS
2410 $url = str_replace('http://flickr.com/','http://www.flickr.com/',$url);
2411
2412 // Is this a link to an image, or to a flickr page ?
2413 $imageurl='';
2414 if (endswith(parse_url($url,PHP_URL_PATH),'.jpg'))
ad6c27b7 2415 { // This is a direct link to an image. e.g. http://farm1.staticflickr.com/5/5921913_ac83ed27bd_o.jpg
45034273
SS
2416 preg_match('!(http://farm\d+\.staticflickr\.com/\d+/\d+_\w+_)\w.jpg!',$url,$matches);
2417 if (!empty($matches[1])) $imageurl=$matches[1].'m.jpg';
2418 }
ad6c27b7 2419 else // This is a flickr page (html)
45034273
SS
2420 {
2421 list($httpstatus,$headers,$data) = getHTTP($url,20); // Get the flickr html page.
2422 if (strpos($httpstatus,'200 OK')!==false)
2423 {
ad6c27b7 2424 // flickr now nicely provides the URL of the thumbnail in each flickr page.
45034273
SS
2425 preg_match('!<link rel=\"image_src\" href=\"(.+?)\"!',$data,$matches);
2426 if (!empty($matches[1])) $imageurl=$matches[1];
2427
2428 // In albums (and some other pages), the link rel="image_src" is not provided,
2429 // but flickr provides:
2430 // <meta property="og:image" content="http://farm4.staticflickr.com/3398/3239339068_25d13535ff_z.jpg" />
2431 if ($imageurl=='')
2432 {
2433 preg_match('!<meta property=\"og:image\" content=\"(.+?)\"!',$data,$matches);
2434 if (!empty($matches[1])) $imageurl=$matches[1];
2435 }
2436 }
2437 }
2438
2439 if ($imageurl!='')
2440 { // Let's download the image.
2441 list($httpstatus,$headers,$data) = getHTTP($imageurl,10); // Image is 240x120, so 10 seconds to download should be enough.
2442 if (strpos($httpstatus,'200 OK')!==false)
2443 {
2444 file_put_contents($GLOBALS['config']['CACHEDIR'].'/'.$thumbname,$data); // Save image to cache.
2445 header('Content-Type: image/jpeg');
2446 echo $data;
2447 return;
2448 }
2449 }
2450 }
2451
2452 elseif ($domain=='vimeo.com' )
2453 {
2454 // This is more complex: we have to perform a HTTP request, then parse the result.
ad6c27b7 2455 // Maybe we should deport this to JavaScript ? Example: http://stackoverflow.com/questions/1361149/get-img-thumbnails-from-vimeo/4285098#4285098
45034273 2456 $vid = substr(parse_url($url,PHP_URL_PATH),1);
1a663a0f 2457 list($httpstatus,$headers,$data) = getHTTP('https://vimeo.com/api/v2/video/'.htmlspecialchars($vid).'.php',5);
45034273
SS
2458 if (strpos($httpstatus,'200 OK')!==false)
2459 {
2460 $t = unserialize($data);
2461 $imageurl = $t[0]['thumbnail_medium'];
2462 // Then we download the image and serve it to our client.
2463 list($httpstatus,$headers,$data) = getHTTP($imageurl,10);
2464 if (strpos($httpstatus,'200 OK')!==false)
2465 {
2466 file_put_contents($GLOBALS['config']['CACHEDIR'].'/'.$thumbname,$data); // Save image to cache.
2467 header('Content-Type: image/jpeg');
2468 echo $data;
2469 return;
2470 }
2471 }
2472 }
2473
2474 elseif ($domain=='ted.com' || endsWith($domain,'.ted.com'))
2475 {
2476 // The thumbnail for TED talks is located in the <link rel="image_src" [...]> tag on that page
2477 // http://www.ted.com/talks/mikko_hypponen_fighting_viruses_defending_the_net.html
2478 // <link rel="image_src" href="http://images.ted.com/images/ted/28bced335898ba54d4441809c5b1112ffaf36781_389x292.jpg" />
bb8f712d 2479 list($httpstatus,$headers,$data) = getHTTP($url,5);
45034273
SS
2480 if (strpos($httpstatus,'200 OK')!==false)
2481 {
2482 // Extract the link to the thumbnail
2483 preg_match('!link rel="image_src" href="(http://images.ted.com/images/ted/.+_\d+x\d+\.jpg)"!',$data,$matches);
2484 if (!empty($matches[1]))
2485 { // Let's download the image.
2486 $imageurl=$matches[1];
2487 list($httpstatus,$headers,$data) = getHTTP($imageurl,20); // No control on image size, so wait long enough.
2488 if (strpos($httpstatus,'200 OK')!==false)
2489 {
2490 $filepath=$GLOBALS['config']['CACHEDIR'].'/'.$thumbname;
2491 file_put_contents($filepath,$data); // Save image to cache.
2492 if (resizeImage($filepath))
2493 {
2494 header('Content-Type: image/jpeg');
2495 echo file_get_contents($filepath);
2496 return;
2497 }
2498 }
2499 }
2500 }
2501 }
bb8f712d 2502
45034273
SS
2503 elseif ($domain=='xkcd.com' || endsWith($domain,'.xkcd.com'))
2504 {
2505 // There is no thumbnail available for xkcd comics, so download the whole image and resize it.
2506 // http://xkcd.com/327/
2507 // <img src="http://imgs.xkcd.com/comics/exploits_of_a_mom.png" title="<BLABLA>" alt="<BLABLA>" />
2508 list($httpstatus,$headers,$data) = getHTTP($url,5);
2509 if (strpos($httpstatus,'200 OK')!==false)
2510 {
2511 // Extract the link to the thumbnail
2512 preg_match('!<img src="(http://imgs.xkcd.com/comics/.*)" title="[^s]!',$data,$matches);
2513 if (!empty($matches[1]))
2514 { // Let's download the image.
2515 $imageurl=$matches[1];
2516 list($httpstatus,$headers,$data) = getHTTP($imageurl,20); // No control on image size, so wait long enough.
2517 if (strpos($httpstatus,'200 OK')!==false)
2518 {
2519 $filepath=$GLOBALS['config']['CACHEDIR'].'/'.$thumbname;
2520 file_put_contents($filepath,$data); // Save image to cache.
2521 if (resizeImage($filepath))
2522 {
2523 header('Content-Type: image/jpeg');
2524 echo file_get_contents($filepath);
2525 return;
2526 }
2527 }
2528 }
2529 }
bb8f712d 2530 }
45034273
SS
2531
2532 else
2533 {
2534 // For all other domains, we try to download the image and make a thumbnail.
2535 list($httpstatus,$headers,$data) = getHTTP($url,30); // We allow 30 seconds max to download (and downloads are limited to 4 Mb)
2536 if (strpos($httpstatus,'200 OK')!==false)
2537 {
2538 $filepath=$GLOBALS['config']['CACHEDIR'].'/'.$thumbname;
2539 file_put_contents($filepath,$data); // Save image to cache.
2540 if (resizeImage($filepath))
2541 {
2542 header('Content-Type: image/jpeg');
2543 echo file_get_contents($filepath);
2544 return;
2545 }
2546 }
2547 }
2548
2549
2550 // Otherwise, return an empty image (8x8 transparent gif)
2551 $blankgif = base64_decode('R0lGODlhCAAIAIAAAP///////yH5BAEKAAEALAAAAAAIAAgAAAIHjI+py+1dAAA7');
2552 file_put_contents($GLOBALS['config']['CACHEDIR'].'/'.$blankname,$blankgif); // Also put something in cache so that this URL is not requested twice.
2553 header('Content-Type: image/gif');
2554 echo $blankgif;
2555}
2556
2557// Make a thumbnail of the image (to width: 120 pixels)
2558// Returns true if success, false otherwise.
2559function resizeImage($filepath)
2560{
2561 if (!function_exists('imagecreatefromjpeg')) return false; // GD not present: no thumbnail possible.
2562
2563 // Trick: some stupid people rename GIF as JPEG... or else.
2564 // So we really try to open each image type whatever the extension is.
2565 $header=file_get_contents($filepath,false,NULL,0,256); // Read first 256 bytes and try to sniff file type.
2566 $im=false;
2567 $i=strpos($header,'GIF8'); if (($i!==false) && ($i==0)) $im = imagecreatefromgif($filepath); // Well this is crude, but it should be enough.
2568 $i=strpos($header,'PNG'); if (($i!==false) && ($i==1)) $im = imagecreatefrompng($filepath);
2569 $i=strpos($header,'JFIF'); if ($i!==false) $im = imagecreatefromjpeg($filepath);
2570 if (!$im) return false; // Unable to open image (corrupted or not an image)
2571 $w = imagesx($im);
2572 $h = imagesy($im);
2573 $ystart = 0; $yheight=$h;
2574 if ($h>$w) { $ystart= ($h/2)-($w/2); $yheight=$w/2; }
2575 $nw = 120; // Desired width
2576 $nh = min(floor(($h*$nw)/$w),120); // Compute new width/height, but maximum 120 pixels height.
2577 // Resize image:
2578 $im2 = imagecreatetruecolor($nw,$nh);
2579 imagecopyresampled($im2, $im, 0, 0, 0, $ystart, $nw, $nh, $w, $yheight);
2580 imageinterlace($im2,true); // For progressive JPEG.
2581 $tempname=$filepath.'_TEMP.jpg';
2582 imagejpeg($im2, $tempname, 90);
2583 imagedestroy($im);
2584 imagedestroy($im2);
9e820906 2585 unlink($filepath);
45034273
SS
2586 rename($tempname,$filepath); // Overwrite original picture with thumbnail.
2587 return true;
2588}
2589
2590// Invalidate caches when the database is changed or the user logs out.
ad6c27b7 2591// (e.g. tags cache).
45034273
SS
2592function invalidateCaches()
2593{
2594 unset($_SESSION['tags']); // Purge cache attached to session.
2595 pageCache::purgeCache(); // Purge page cache shared by sessions.
2596}
2597
2598if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=genthumbnail')) { genThumbnail(); exit; } // Thumbnail generation/cache does not need the link database.
2599if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=rss')) { showRSS(); exit; }
2600if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=atom')) { showATOM(); exit; }
2601if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=dailyrss')) { showDailyRSS(); exit; }
bb8f712d 2602if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=daily')) { showDaily(); exit; }
45034273
SS
2603if (!isset($_SESSION['LINKS_PER_PAGE'])) $_SESSION['LINKS_PER_PAGE']=$GLOBALS['config']['LINKS_PER_PAGE'];
2604renderPage();
03545ef6 2605?>